diff options
Diffstat (limited to 'test')
397 files changed, 0 insertions, 88423 deletions
diff --git a/test/BUILD b/test/BUILD deleted file mode 100644 index 34b950644..000000000 --- a/test/BUILD +++ /dev/null @@ -1 +0,0 @@ -package(licenses = ["notice"]) diff --git a/test/README.md b/test/README.md deleted file mode 100644 index 97fe7ea04..000000000 --- a/test/README.md +++ /dev/null @@ -1,40 +0,0 @@ -# Tests - -The tests defined under this path are verifying functionality beyond what unit -tests can cover, e.g. integration and end to end tests. Due to their nature, -they may need extra setup in the test machine and extra configuration to run. - -- **syscalls**: system call tests use a local runner, and do not require - additional configuration in the machine. -- **integration:** defines integration tests that uses `docker run` to test - functionality. -- **image:** basic end to end test for popular images. These require the same - setup as integration tests. -- **root:** tests that require to be run as root. These require the same setup - as integration tests. -- **util:** utilities library to support the tests. - -For the above noted cases, the relevant runtime must be installed via `runsc -install` before running. Just note that they require specific configuration to -work. This is handled automatically by the test scripts in the `scripts` -directory and they can be used to run tests locally on your machine. They are -also used to run these tests in `kokoro`. - -**Example:** - -To run image and integration tests, run: - -`./scripts/docker_test.sh` - -To run root tests, run: - -`./scripts/root_test.sh` - -There are a few other interesting variations for image and integration tests: - -* overlay: sets writable overlay inside the sentry -* hostnet: configures host network pass-thru, instead of netstack -* kvm: runsc the test using the KVM platform, instead of ptrace - -The test will build runsc, configure it with your local docker, restart -`dockerd`, and run tests. The location for runsc logs is printed to the output. diff --git a/test/e2e/BUILD b/test/e2e/BUILD deleted file mode 100644 index 76e04f878..000000000 --- a/test/e2e/BUILD +++ /dev/null @@ -1,32 +0,0 @@ -load("//tools:defs.bzl", "go_library", "go_test") - -package(licenses = ["notice"]) - -go_test( - name = "integration_test", - size = "large", - srcs = [ - "exec_test.go", - "integration_test.go", - "regression_test.go", - ], - library = ":integration", - tags = [ - # Requires docker and runsc to be configured before the test runs. - "manual", - "local", - ], - visibility = ["//:sandbox"], - deps = [ - "//pkg/abi/linux", - "//pkg/bits", - "//runsc/dockerutil", - "//runsc/specutils", - "//runsc/testutil", - ], -) - -go_library( - name = "integration", - srcs = ["integration.go"], -) diff --git a/test/e2e/exec_test.go b/test/e2e/exec_test.go deleted file mode 100644 index 4074d2285..000000000 --- a/test/e2e/exec_test.go +++ /dev/null @@ -1,275 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// Package integration provides end-to-end integration tests for runsc. These -// tests require docker and runsc to be installed on the machine. -// -// Each test calls docker commands to start up a container, and tests that it -// is behaving properly, with various runsc commands. The container is killed -// and deleted at the end. - -package integration - -import ( - "fmt" - "strconv" - "strings" - "syscall" - "testing" - "time" - - "gvisor.dev/gvisor/pkg/abi/linux" - "gvisor.dev/gvisor/pkg/bits" - "gvisor.dev/gvisor/runsc/dockerutil" - "gvisor.dev/gvisor/runsc/specutils" -) - -// Test that exec uses the exact same capability set as the container. -func TestExecCapabilities(t *testing.T) { - if err := dockerutil.Pull("alpine"); err != nil { - t.Fatalf("docker pull failed: %v", err) - } - d := dockerutil.MakeDocker("exec-capabilities-test") - - // Start the container. - if err := d.Run("alpine", "sh", "-c", "cat /proc/self/status; sleep 100"); err != nil { - t.Fatalf("docker run failed: %v", err) - } - defer d.CleanUp() - - matches, err := d.WaitForOutputSubmatch("CapEff:\t([0-9a-f]+)\n", 5*time.Second) - if err != nil { - t.Fatalf("WaitForOutputSubmatch() timeout: %v", err) - } - if len(matches) != 2 { - t.Fatalf("There should be a match for the whole line and the capability bitmask") - } - want := fmt.Sprintf("CapEff:\t%s\n", matches[1]) - t.Log("Root capabilities:", want) - - // Now check that exec'd process capabilities match the root. - got, err := d.Exec("grep", "CapEff:", "/proc/self/status") - if err != nil { - t.Fatalf("docker exec failed: %v", err) - } - t.Logf("CapEff: %v", got) - if got != want { - t.Errorf("wrong capabilities, got: %q, want: %q", got, want) - } -} - -// Test that 'exec --privileged' adds all capabilities, except for CAP_NET_RAW -// which is removed from the container when --net-raw=false. -func TestExecPrivileged(t *testing.T) { - if err := dockerutil.Pull("alpine"); err != nil { - t.Fatalf("docker pull failed: %v", err) - } - d := dockerutil.MakeDocker("exec-privileged-test") - - // Start the container with all capabilities dropped. - if err := d.Run("--cap-drop=all", "alpine", "sh", "-c", "cat /proc/self/status; sleep 100"); err != nil { - t.Fatalf("docker run failed: %v", err) - } - defer d.CleanUp() - - // Check that all capabilities where dropped from container. - matches, err := d.WaitForOutputSubmatch("CapEff:\t([0-9a-f]+)\n", 5*time.Second) - if err != nil { - t.Fatalf("WaitForOutputSubmatch() timeout: %v", err) - } - if len(matches) != 2 { - t.Fatalf("There should be a match for the whole line and the capability bitmask") - } - containerCaps, err := strconv.ParseUint(matches[1], 16, 64) - if err != nil { - t.Fatalf("failed to convert capabilities %q: %v", matches[1], err) - } - t.Logf("Container capabilities: %#x", containerCaps) - if containerCaps != 0 { - t.Fatalf("Container should have no capabilities: %x", containerCaps) - } - - // Check that 'exec --privileged' adds all capabilities, except - // for CAP_NET_RAW. - got, err := d.ExecWithFlags([]string{"--privileged"}, "grep", "CapEff:", "/proc/self/status") - if err != nil { - t.Fatalf("docker exec failed: %v", err) - } - t.Logf("Exec CapEff: %v", got) - want := fmt.Sprintf("CapEff:\t%016x\n", specutils.AllCapabilitiesUint64()&^bits.MaskOf64(int(linux.CAP_NET_RAW))) - if got != want { - t.Errorf("Wrong capabilities, got: %q, want: %q. Make sure runsc is not using '--net-raw'", got, want) - } -} - -func TestExecJobControl(t *testing.T) { - if err := dockerutil.Pull("alpine"); err != nil { - t.Fatalf("docker pull failed: %v", err) - } - d := dockerutil.MakeDocker("exec-job-control-test") - - // Start the container. - if err := d.Run("alpine", "sleep", "1000"); err != nil { - t.Fatalf("docker run failed: %v", err) - } - defer d.CleanUp() - - // Exec 'sh' with an attached pty. - cmd, ptmx, err := d.ExecWithTerminal("sh") - if err != nil { - t.Fatalf("docker exec failed: %v", err) - } - defer ptmx.Close() - - // Call "sleep 100 | cat" in the shell. We pipe to cat so that there - // will be two processes in the foreground process group. - if _, err := ptmx.Write([]byte("sleep 100 | cat\n")); err != nil { - t.Fatalf("error writing to pty: %v", err) - } - - // Give shell a few seconds to start executing the sleep. - time.Sleep(2 * time.Second) - - // Send a ^C to the pty, which should kill sleep and cat, but not the - // shell. \x03 is ASCII "end of text", which is the same as ^C. - if _, err := ptmx.Write([]byte{'\x03'}); err != nil { - t.Fatalf("error writing to pty: %v", err) - } - - // The shell should still be alive at this point. Sleep should have - // exited with code 2+128=130. We'll exit with 10 plus that number, so - // that we can be sure that the shell did not get signalled. - if _, err := ptmx.Write([]byte("exit $(expr $? + 10)\n")); err != nil { - t.Fatalf("error writing to pty: %v", err) - } - - // Exec process should exit with code 10+130=140. - ps, err := cmd.Process.Wait() - if err != nil { - t.Fatalf("error waiting for exec process: %v", err) - } - ws := ps.Sys().(syscall.WaitStatus) - if !ws.Exited() { - t.Errorf("ws.Exited got false, want true") - } - if got, want := ws.ExitStatus(), 140; got != want { - t.Errorf("ws.ExitedStatus got %d, want %d", got, want) - } -} - -// Test that failure to exec returns proper error message. -func TestExecError(t *testing.T) { - if err := dockerutil.Pull("alpine"); err != nil { - t.Fatalf("docker pull failed: %v", err) - } - d := dockerutil.MakeDocker("exec-error-test") - - // Start the container. - if err := d.Run("alpine", "sleep", "1000"); err != nil { - t.Fatalf("docker run failed: %v", err) - } - defer d.CleanUp() - - _, err := d.Exec("no_can_find") - if err == nil { - t.Fatalf("docker exec didn't fail") - } - if want := `error finding executable "no_can_find" in PATH`; !strings.Contains(err.Error(), want) { - t.Fatalf("docker exec wrong error, got: %s, want: .*%s.*", err.Error(), want) - } -} - -// Test that exec inherits environment from run. -func TestExecEnv(t *testing.T) { - if err := dockerutil.Pull("alpine"); err != nil { - t.Fatalf("docker pull failed: %v", err) - } - d := dockerutil.MakeDocker("exec-env-test") - - // Start the container with env FOO=BAR. - if err := d.Run("-e", "FOO=BAR", "alpine", "sleep", "1000"); err != nil { - t.Fatalf("docker run failed: %v", err) - } - defer d.CleanUp() - - // Exec "echo $FOO". - got, err := d.Exec("/bin/sh", "-c", "echo $FOO") - if err != nil { - t.Fatalf("docker exec failed: %v", err) - } - if got, want := strings.TrimSpace(got), "BAR"; got != want { - t.Errorf("bad output from 'docker exec'. Got %q; Want %q.", got, want) - } -} - -// TestRunEnvHasHome tests that run always has HOME environment set. -func TestRunEnvHasHome(t *testing.T) { - // Base alpine image does not have any environment variables set. - if err := dockerutil.Pull("alpine"); err != nil { - t.Fatalf("docker pull failed: %v", err) - } - d := dockerutil.MakeDocker("run-env-test") - - // Exec "echo $HOME". The 'bin' user's home dir is '/bin'. - got, err := d.RunFg("--user", "bin", "alpine", "/bin/sh", "-c", "echo $HOME") - if err != nil { - t.Fatalf("docker run failed: %v", err) - } - defer d.CleanUp() - if got, want := strings.TrimSpace(got), "/bin"; got != want { - t.Errorf("bad output from 'docker run'. Got %q; Want %q.", got, want) - } -} - -// Test that exec always has HOME environment set, even when not set in run. -func TestExecEnvHasHome(t *testing.T) { - // Base alpine image does not have any environment variables set. - if err := dockerutil.Pull("alpine"); err != nil { - t.Fatalf("docker pull failed: %v", err) - } - d := dockerutil.MakeDocker("exec-env-home-test") - - // We will check that HOME is set for root user, and also for a new - // non-root user we will create. - newUID := 1234 - newHome := "/foo/bar" - - // Create a new user with a home directory, and then sleep. - script := fmt.Sprintf(` - mkdir -p -m 777 %s && \ - adduser foo -D -u %d -h %s && \ - sleep 1000`, newHome, newUID, newHome) - if err := d.Run("alpine", "/bin/sh", "-c", script); err != nil { - t.Fatalf("docker run failed: %v", err) - } - defer d.CleanUp() - - // Exec "echo $HOME", and expect to see "/root". - got, err := d.Exec("/bin/sh", "-c", "echo $HOME") - if err != nil { - t.Fatalf("docker exec failed: %v", err) - } - if want := "/root"; !strings.Contains(got, want) { - t.Errorf("wanted exec output to contain %q, got %q", want, got) - } - - // Execute the same as uid 123 and expect newHome. - got, err = d.ExecAsUser(strconv.Itoa(newUID), "/bin/sh", "-c", "echo $HOME") - if err != nil { - t.Fatalf("docker exec failed: %v", err) - } - if want := newHome; !strings.Contains(got, want) { - t.Errorf("wanted exec output to contain %q, got %q", want, got) - } -} diff --git a/test/e2e/integration.go b/test/e2e/integration.go deleted file mode 100644 index 4cd5f6c24..000000000 --- a/test/e2e/integration.go +++ /dev/null @@ -1,16 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// Package integration is empty. See integration_test.go for description. -package integration diff --git a/test/e2e/integration_test.go b/test/e2e/integration_test.go deleted file mode 100644 index 28064e557..000000000 --- a/test/e2e/integration_test.go +++ /dev/null @@ -1,351 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// Package integration provides end-to-end integration tests for runsc. -// -// Each test calls docker commands to start up a container, and tests that it is -// behaving properly, with various runsc commands. The container is killed and -// deleted at the end. -// -// Setup instruction in test/README.md. -package integration - -import ( - "flag" - "fmt" - "net" - "net/http" - "os" - "strconv" - "strings" - "syscall" - "testing" - "time" - - "gvisor.dev/gvisor/runsc/dockerutil" - "gvisor.dev/gvisor/runsc/testutil" -) - -// httpRequestSucceeds sends a request to a given url and checks that the status is OK. -func httpRequestSucceeds(client http.Client, server string, port int) error { - url := fmt.Sprintf("http://%s:%d", server, port) - // Ensure that content is being served. - resp, err := client.Get(url) - if err != nil { - return fmt.Errorf("error reaching http server: %v", err) - } - if want := http.StatusOK; resp.StatusCode != want { - return fmt.Errorf("wrong response code, got: %d, want: %d", resp.StatusCode, want) - } - return nil -} - -// TestLifeCycle tests a basic Create/Start/Stop docker container life cycle. -func TestLifeCycle(t *testing.T) { - if err := dockerutil.Pull("nginx"); err != nil { - t.Fatal("docker pull failed:", err) - } - d := dockerutil.MakeDocker("lifecycle-test") - if err := d.Create("-p", "80", "nginx"); err != nil { - t.Fatal("docker create failed:", err) - } - if err := d.Start(); err != nil { - d.CleanUp() - t.Fatal("docker start failed:", err) - } - - // Test that container is working - port, err := d.FindPort(80) - if err != nil { - t.Fatal("docker.FindPort(80) failed: ", err) - } - if err := testutil.WaitForHTTP(port, 30*time.Second); err != nil { - t.Fatal("WaitForHTTP() timeout:", err) - } - client := http.Client{Timeout: time.Duration(2 * time.Second)} - if err := httpRequestSucceeds(client, "localhost", port); err != nil { - t.Error("http request failed:", err) - } - - if err := d.Stop(); err != nil { - d.CleanUp() - t.Fatal("docker stop failed:", err) - } - if err := d.Remove(); err != nil { - t.Fatal("docker rm failed:", err) - } -} - -func TestPauseResume(t *testing.T) { - const img = "gcr.io/gvisor-presubmit/python-hello" - if !testutil.IsCheckpointSupported() { - t.Log("Checkpoint is not supported, skipping test.") - return - } - - if err := dockerutil.Pull(img); err != nil { - t.Fatal("docker pull failed:", err) - } - d := dockerutil.MakeDocker("pause-resume-test") - if err := d.Run("-p", "8080", img); err != nil { - t.Fatalf("docker run failed: %v", err) - } - defer d.CleanUp() - - // Find where port 8080 is mapped to. - port, err := d.FindPort(8080) - if err != nil { - t.Fatal("docker.FindPort(8080) failed:", err) - } - - // Wait until it's up and running. - if err := testutil.WaitForHTTP(port, 30*time.Second); err != nil { - t.Fatal("WaitForHTTP() timeout:", err) - } - - // Check that container is working. - client := http.Client{Timeout: time.Duration(2 * time.Second)} - if err := httpRequestSucceeds(client, "localhost", port); err != nil { - t.Error("http request failed:", err) - } - - if err := d.Pause(); err != nil { - t.Fatal("docker pause failed:", err) - } - - // Check if container is paused. - switch _, err := client.Get(fmt.Sprintf("http://localhost:%d", port)); v := err.(type) { - case nil: - t.Errorf("http req expected to fail but it succeeded") - case net.Error: - if !v.Timeout() { - t.Errorf("http req got error %v, wanted timeout", v) - } - default: - t.Errorf("http req got unexpected error %v", v) - } - - if err := d.Unpause(); err != nil { - t.Fatal("docker unpause failed:", err) - } - - // Wait until it's up and running. - if err := testutil.WaitForHTTP(port, 30*time.Second); err != nil { - t.Fatal("WaitForHTTP() timeout:", err) - } - - // Check if container is working again. - if err := httpRequestSucceeds(client, "localhost", port); err != nil { - t.Error("http request failed:", err) - } -} - -func TestCheckpointRestore(t *testing.T) { - const img = "gcr.io/gvisor-presubmit/python-hello" - if !testutil.IsCheckpointSupported() { - t.Log("Pause/resume is not supported, skipping test.") - return - } - - if err := dockerutil.Pull(img); err != nil { - t.Fatal("docker pull failed:", err) - } - d := dockerutil.MakeDocker("save-restore-test") - if err := d.Run("-p", "8080", img); err != nil { - t.Fatalf("docker run failed: %v", err) - } - defer d.CleanUp() - - if err := d.Checkpoint("test"); err != nil { - t.Fatal("docker checkpoint failed:", err) - } - - if _, err := d.Wait(30 * time.Second); err != nil { - t.Fatal(err) - } - - // TODO(b/143498576): Remove after github.com/moby/moby/issues/38963 is fixed. - time.Sleep(1 * time.Second) - - if err := d.Restore("test"); err != nil { - t.Fatal("docker restore failed:", err) - } - - // Find where port 8080 is mapped to. - port, err := d.FindPort(8080) - if err != nil { - t.Fatal("docker.FindPort(8080) failed:", err) - } - - // Wait until it's up and running. - if err := testutil.WaitForHTTP(port, 30*time.Second); err != nil { - t.Fatal("WaitForHTTP() timeout:", err) - } - - // Check if container is working again. - client := http.Client{Timeout: time.Duration(2 * time.Second)} - if err := httpRequestSucceeds(client, "localhost", port); err != nil { - t.Error("http request failed:", err) - } -} - -// Create client and server that talk to each other using the local IP. -func TestConnectToSelf(t *testing.T) { - d := dockerutil.MakeDocker("connect-to-self-test") - - // Creates server that replies "server" and exists. Sleeps at the end because - // 'docker exec' gets killed if the init process exists before it can finish. - if err := d.Run("ubuntu:trusty", "/bin/sh", "-c", "echo server | nc -l -p 8080 && sleep 1"); err != nil { - t.Fatal("docker run failed:", err) - } - defer d.CleanUp() - - // Finds IP address for host. - ip, err := d.Exec("/bin/sh", "-c", "cat /etc/hosts | grep ${HOSTNAME} | awk '{print $1}'") - if err != nil { - t.Fatal("docker exec failed:", err) - } - ip = strings.TrimRight(ip, "\n") - - // Runs client that sends "client" to the server and exits. - reply, err := d.Exec("/bin/sh", "-c", fmt.Sprintf("echo client | nc %s 8080", ip)) - if err != nil { - t.Fatal("docker exec failed:", err) - } - - // Ensure both client and server got the message from each other. - if want := "server\n"; reply != want { - t.Errorf("Error on server, want: %q, got: %q", want, reply) - } - if _, err := d.WaitForOutput("^client\n$", 1*time.Second); err != nil { - t.Fatal("docker.WaitForOutput(client) timeout:", err) - } -} - -func TestMemLimit(t *testing.T) { - if err := dockerutil.Pull("alpine"); err != nil { - t.Fatal("docker pull failed:", err) - } - d := dockerutil.MakeDocker("cgroup-test") - cmd := "cat /proc/meminfo | grep MemTotal: | awk '{print $2}'" - out, err := d.RunFg("--memory=500MB", "alpine", "sh", "-c", cmd) - if err != nil { - t.Fatal("docker run failed:", err) - } - defer d.CleanUp() - - // Remove warning message that swap isn't present. - if strings.HasPrefix(out, "WARNING") { - lines := strings.Split(out, "\n") - if len(lines) != 3 { - t.Fatalf("invalid output: %s", out) - } - out = lines[1] - } - - got, err := strconv.ParseUint(strings.TrimSpace(out), 10, 64) - if err != nil { - t.Fatalf("failed to parse %q: %v", out, err) - } - if want := uint64(500 * 1024); got != want { - t.Errorf("MemTotal got: %d, want: %d", got, want) - } -} - -func TestNumCPU(t *testing.T) { - if err := dockerutil.Pull("alpine"); err != nil { - t.Fatal("docker pull failed:", err) - } - d := dockerutil.MakeDocker("cgroup-test") - cmd := "cat /proc/cpuinfo | grep 'processor.*:' | wc -l" - out, err := d.RunFg("--cpuset-cpus=0", "alpine", "sh", "-c", cmd) - if err != nil { - t.Fatal("docker run failed:", err) - } - defer d.CleanUp() - - got, err := strconv.Atoi(strings.TrimSpace(out)) - if err != nil { - t.Fatalf("failed to parse %q: %v", out, err) - } - if want := 1; got != want { - t.Errorf("MemTotal got: %d, want: %d", got, want) - } -} - -// TestJobControl tests that job control characters are handled properly. -func TestJobControl(t *testing.T) { - if err := dockerutil.Pull("alpine"); err != nil { - t.Fatalf("docker pull failed: %v", err) - } - d := dockerutil.MakeDocker("job-control-test") - - // Start the container with an attached PTY. - _, ptmx, err := d.RunWithPty("alpine", "sh") - if err != nil { - t.Fatalf("docker run failed: %v", err) - } - defer ptmx.Close() - defer d.CleanUp() - - // Call "sleep 100" in the shell. - if _, err := ptmx.Write([]byte("sleep 100\n")); err != nil { - t.Fatalf("error writing to pty: %v", err) - } - - // Give shell a few seconds to start executing the sleep. - time.Sleep(2 * time.Second) - - // Send a ^C to the pty, which should kill sleep, but not the shell. - // \x03 is ASCII "end of text", which is the same as ^C. - if _, err := ptmx.Write([]byte{'\x03'}); err != nil { - t.Fatalf("error writing to pty: %v", err) - } - - // The shell should still be alive at this point. Sleep should have - // exited with code 2+128=130. We'll exit with 10 plus that number, so - // that we can be sure that the shell did not get signalled. - if _, err := ptmx.Write([]byte("exit $(expr $? + 10)\n")); err != nil { - t.Fatalf("error writing to pty: %v", err) - } - - // Wait for the container to exit. - got, err := d.Wait(5 * time.Second) - if err != nil { - t.Fatalf("error getting exit code: %v", err) - } - // Container should exit with code 10+130=140. - if want := syscall.WaitStatus(140); got != want { - t.Errorf("container exited with code %d want %d", got, want) - } -} - -// TestTmpFile checks that files inside '/tmp' are not overridden. In addition, -// it checks that working dir is created if it doesn't exit. -func TestTmpFile(t *testing.T) { - if err := dockerutil.Pull("alpine"); err != nil { - t.Fatal("docker pull failed:", err) - } - d := dockerutil.MakeDocker("tmp-file-test") - if err := d.Run("-w=/tmp/foo/bar", "--read-only", "alpine", "touch", "/tmp/foo/bar/file"); err != nil { - t.Fatal("docker run failed:", err) - } - defer d.CleanUp() -} - -func TestMain(m *testing.M) { - dockerutil.EnsureSupportedDockerVersion() - flag.Parse() - os.Exit(m.Run()) -} diff --git a/test/e2e/regression_test.go b/test/e2e/regression_test.go deleted file mode 100644 index 2488be383..000000000 --- a/test/e2e/regression_test.go +++ /dev/null @@ -1,45 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package integration - -import ( - "strings" - "testing" - - "gvisor.dev/gvisor/runsc/dockerutil" -) - -// Test that UDS can be created using overlay when parent directory is in lower -// layer only (b/134090485). -// -// Prerequisite: the directory where the socket file is created must not have -// been open for write before bind(2) is called. -func TestBindOverlay(t *testing.T) { - if err := dockerutil.Pull("ubuntu:trusty"); err != nil { - t.Fatal("docker pull failed:", err) - } - d := dockerutil.MakeDocker("bind-overlay-test") - - cmd := "nc -l -U /var/run/sock & p=$! && sleep 1 && echo foobar-asdf | nc -U /var/run/sock && wait $p" - got, err := d.RunFg("ubuntu:trusty", "bash", "-c", cmd) - if err != nil { - t.Fatal("docker run failed:", err) - } - - if want := "foobar-asdf"; !strings.Contains(got, want) { - t.Fatalf("docker run output is missing %q: %s", want, got) - } - defer d.CleanUp() -} diff --git a/test/image/BUILD b/test/image/BUILD deleted file mode 100644 index 7392ac54e..000000000 --- a/test/image/BUILD +++ /dev/null @@ -1,33 +0,0 @@ -load("//tools:defs.bzl", "go_library", "go_test") - -package(licenses = ["notice"]) - -go_test( - name = "image_test", - size = "large", - srcs = [ - "image_test.go", - ], - data = [ - "latin10k.txt", - "mysql.sql", - "ruby.rb", - "ruby.sh", - ], - library = ":image", - tags = [ - # Requires docker and runsc to be configured before the test runs. - "manual", - "local", - ], - visibility = ["//:sandbox"], - deps = [ - "//runsc/dockerutil", - "//runsc/testutil", - ], -) - -go_library( - name = "image", - srcs = ["image.go"], -) diff --git a/test/image/image.go b/test/image/image.go deleted file mode 100644 index 297f1ab92..000000000 --- a/test/image/image.go +++ /dev/null @@ -1,16 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// Package image is empty. See image_test.go for description. -package image diff --git a/test/image/image_test.go b/test/image/image_test.go deleted file mode 100644 index 0a1e19d6f..000000000 --- a/test/image/image_test.go +++ /dev/null @@ -1,353 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// Package image provides end-to-end image tests for runsc. - -// Each test calls docker commands to start up a container, and tests that it -// is behaving properly, like connecting to a port or looking at the output. -// The container is killed and deleted at the end. -// -// Setup instruction in test/README.md. -package image - -import ( - "flag" - "fmt" - "io/ioutil" - "log" - "net/http" - "os" - "path/filepath" - "strings" - "testing" - "time" - - "gvisor.dev/gvisor/runsc/dockerutil" - "gvisor.dev/gvisor/runsc/testutil" -) - -func TestHelloWorld(t *testing.T) { - d := dockerutil.MakeDocker("hello-test") - if err := d.Run("hello-world"); err != nil { - t.Fatalf("docker run failed: %v", err) - } - defer d.CleanUp() - - if _, err := d.WaitForOutput("Hello from Docker!", 5*time.Second); err != nil { - t.Fatalf("docker didn't say hello: %v", err) - } -} - -func runHTTPRequest(port int) error { - url := fmt.Sprintf("http://localhost:%d/not-found", port) - resp, err := http.Get(url) - if err != nil { - return fmt.Errorf("error reaching http server: %v", err) - } - if want := http.StatusNotFound; resp.StatusCode != want { - return fmt.Errorf("Wrong response code, got: %d, want: %d", resp.StatusCode, want) - } - - url = fmt.Sprintf("http://localhost:%d/latin10k.txt", port) - resp, err = http.Get(url) - if err != nil { - return fmt.Errorf("Error reaching http server: %v", err) - } - if want := http.StatusOK; resp.StatusCode != want { - return fmt.Errorf("Wrong response code, got: %d, want: %d", resp.StatusCode, want) - } - - body, err := ioutil.ReadAll(resp.Body) - if err != nil { - return fmt.Errorf("Error reading http response: %v", err) - } - defer resp.Body.Close() - - // READALL is the last word in the file. Ensures everything was read. - if want := "READALL"; strings.HasSuffix(string(body), want) { - return fmt.Errorf("response doesn't contain %q, resp: %q", want, body) - } - return nil -} - -func testHTTPServer(t *testing.T, port int) { - const requests = 10 - ch := make(chan error, requests) - for i := 0; i < requests; i++ { - go func() { - start := time.Now() - err := runHTTPRequest(port) - log.Printf("Response time %v: %v", time.Since(start).String(), err) - ch <- err - }() - } - - for i := 0; i < requests; i++ { - err := <-ch - if err != nil { - t.Errorf("testHTTPServer(%d) failed: %v", port, err) - } - } -} - -func TestHttpd(t *testing.T) { - if err := dockerutil.Pull("httpd"); err != nil { - t.Fatalf("docker pull failed: %v", err) - } - d := dockerutil.MakeDocker("http-test") - - dir, err := dockerutil.PrepareFiles("test/image/latin10k.txt") - if err != nil { - t.Fatalf("PrepareFiles() failed: %v", err) - } - - // Start the container. - mountArg := dockerutil.MountArg(dir, "/usr/local/apache2/htdocs", dockerutil.ReadOnly) - if err := d.Run("-p", "80", mountArg, "httpd"); err != nil { - t.Fatalf("docker run failed: %v", err) - } - defer d.CleanUp() - - // Find where port 80 is mapped to. - port, err := d.FindPort(80) - if err != nil { - t.Fatalf("docker.FindPort(80) failed: %v", err) - } - - // Wait until it's up and running. - if err := testutil.WaitForHTTP(port, 30*time.Second); err != nil { - t.Errorf("WaitForHTTP() timeout: %v", err) - } - - testHTTPServer(t, port) -} - -func TestNginx(t *testing.T) { - if err := dockerutil.Pull("nginx"); err != nil { - t.Fatalf("docker pull failed: %v", err) - } - d := dockerutil.MakeDocker("net-test") - - dir, err := dockerutil.PrepareFiles("test/image/latin10k.txt") - if err != nil { - t.Fatalf("PrepareFiles() failed: %v", err) - } - - // Start the container. - mountArg := dockerutil.MountArg(dir, "/usr/share/nginx/html", dockerutil.ReadOnly) - if err := d.Run("-p", "80", mountArg, "nginx"); err != nil { - t.Fatalf("docker run failed: %v", err) - } - defer d.CleanUp() - - // Find where port 80 is mapped to. - port, err := d.FindPort(80) - if err != nil { - t.Fatalf("docker.FindPort(80) failed: %v", err) - } - - // Wait until it's up and running. - if err := testutil.WaitForHTTP(port, 30*time.Second); err != nil { - t.Errorf("WaitForHTTP() timeout: %v", err) - } - - testHTTPServer(t, port) -} - -func TestMysql(t *testing.T) { - if err := dockerutil.Pull("mysql"); err != nil { - t.Fatalf("docker pull failed: %v", err) - } - d := dockerutil.MakeDocker("mysql-test") - - // Start the container. - if err := d.Run("-e", "MYSQL_ROOT_PASSWORD=foobar123", "mysql"); err != nil { - t.Fatalf("docker run failed: %v", err) - } - defer d.CleanUp() - - // Wait until it's up and running. - if _, err := d.WaitForOutput("port: 3306 MySQL Community Server", 3*time.Minute); err != nil { - t.Fatalf("docker.WaitForOutput() timeout: %v", err) - } - - client := dockerutil.MakeDocker("mysql-client-test") - dir, err := dockerutil.PrepareFiles("test/image/mysql.sql") - if err != nil { - t.Fatalf("PrepareFiles() failed: %v", err) - } - - // Tell mysql client to connect to the server and execute the file in verbose - // mode to verify the output. - args := []string{ - dockerutil.LinkArg(&d, "mysql"), - dockerutil.MountArg(dir, "/sql", dockerutil.ReadWrite), - "mysql", - "mysql", "-hmysql", "-uroot", "-pfoobar123", "-v", "-e", "source /sql/mysql.sql", - } - if err := client.Run(args...); err != nil { - t.Fatalf("docker run failed: %v", err) - } - defer client.CleanUp() - - // Ensure file executed to the end and shutdown mysql. - if _, err := client.WaitForOutput("--------------\nshutdown\n--------------", 15*time.Second); err != nil { - t.Fatalf("docker.WaitForOutput() timeout: %v", err) - } - if _, err := d.WaitForOutput("mysqld: Shutdown complete", 30*time.Second); err != nil { - t.Fatalf("docker.WaitForOutput() timeout: %v", err) - } -} - -func TestPythonHello(t *testing.T) { - // TODO(b/136503277): Once we have more complete python runtime tests, - // we can drop this one. - const img = "gcr.io/gvisor-presubmit/python-hello" - if err := dockerutil.Pull(img); err != nil { - t.Fatalf("docker pull failed: %v", err) - } - d := dockerutil.MakeDocker("python-hello-test") - if err := d.Run("-p", "8080", img); err != nil { - t.Fatalf("docker run failed: %v", err) - } - defer d.CleanUp() - - // Find where port 8080 is mapped to. - port, err := d.FindPort(8080) - if err != nil { - t.Fatalf("docker.FindPort(8080) failed: %v", err) - } - - // Wait until it's up and running. - if err := testutil.WaitForHTTP(port, 30*time.Second); err != nil { - t.Fatalf("WaitForHTTP() timeout: %v", err) - } - - // Ensure that content is being served. - url := fmt.Sprintf("http://localhost:%d", port) - resp, err := http.Get(url) - if err != nil { - t.Errorf("Error reaching http server: %v", err) - } - if want := http.StatusOK; resp.StatusCode != want { - t.Errorf("Wrong response code, got: %d, want: %d", resp.StatusCode, want) - } -} - -func TestTomcat(t *testing.T) { - if err := dockerutil.Pull("tomcat:8.0"); err != nil { - t.Fatalf("docker pull failed: %v", err) - } - d := dockerutil.MakeDocker("tomcat-test") - if err := d.Run("-p", "8080", "tomcat:8.0"); err != nil { - t.Fatalf("docker run failed: %v", err) - } - defer d.CleanUp() - - // Find where port 8080 is mapped to. - port, err := d.FindPort(8080) - if err != nil { - t.Fatalf("docker.FindPort(8080) failed: %v", err) - } - - // Wait until it's up and running. - if err := testutil.WaitForHTTP(port, 30*time.Second); err != nil { - t.Fatalf("WaitForHTTP() timeout: %v", err) - } - - // Ensure that content is being served. - url := fmt.Sprintf("http://localhost:%d", port) - resp, err := http.Get(url) - if err != nil { - t.Errorf("Error reaching http server: %v", err) - } - if want := http.StatusOK; resp.StatusCode != want { - t.Errorf("Wrong response code, got: %d, want: %d", resp.StatusCode, want) - } -} - -func TestRuby(t *testing.T) { - if err := dockerutil.Pull("ruby"); err != nil { - t.Fatalf("docker pull failed: %v", err) - } - d := dockerutil.MakeDocker("ruby-test") - - dir, err := dockerutil.PrepareFiles("test/image/ruby.rb", "test/image/ruby.sh") - if err != nil { - t.Fatalf("PrepareFiles() failed: %v", err) - } - if err := os.Chmod(filepath.Join(dir, "ruby.sh"), 0333); err != nil { - t.Fatalf("os.Chmod(%q, 0333) failed: %v", dir, err) - } - - if err := d.Run("-p", "8080", dockerutil.MountArg(dir, "/src", dockerutil.ReadOnly), "ruby", "/src/ruby.sh"); err != nil { - t.Fatalf("docker run failed: %v", err) - } - defer d.CleanUp() - - // Find where port 8080 is mapped to. - port, err := d.FindPort(8080) - if err != nil { - t.Fatalf("docker.FindPort(8080) failed: %v", err) - } - - // Wait until it's up and running, 'gem install' can take some time. - if err := testutil.WaitForHTTP(port, 1*time.Minute); err != nil { - t.Fatalf("WaitForHTTP() timeout: %v", err) - } - - // Ensure that content is being served. - url := fmt.Sprintf("http://localhost:%d", port) - resp, err := http.Get(url) - if err != nil { - t.Errorf("error reaching http server: %v", err) - } - if want := http.StatusOK; resp.StatusCode != want { - t.Errorf("wrong response code, got: %d, want: %d", resp.StatusCode, want) - } - body, err := ioutil.ReadAll(resp.Body) - if err != nil { - t.Fatalf("error reading body: %v", err) - } - if got, want := string(body), "Hello World"; !strings.Contains(got, want) { - t.Errorf("invalid body content, got: %q, want: %q", got, want) - } -} - -func TestStdio(t *testing.T) { - if err := dockerutil.Pull("alpine"); err != nil { - t.Fatalf("docker pull failed: %v", err) - } - d := dockerutil.MakeDocker("stdio-test") - - wantStdout := "hello stdout" - wantStderr := "bonjour stderr" - cmd := fmt.Sprintf("echo %q; echo %q 1>&2;", wantStdout, wantStderr) - if err := d.Run("alpine", "/bin/sh", "-c", cmd); err != nil { - t.Fatalf("docker run failed: %v", err) - } - defer d.CleanUp() - - for _, want := range []string{wantStdout, wantStderr} { - if _, err := d.WaitForOutput(want, 5*time.Second); err != nil { - t.Fatalf("docker didn't get output %q : %v", want, err) - } - } -} - -func TestMain(m *testing.M) { - dockerutil.EnsureSupportedDockerVersion() - flag.Parse() - os.Exit(m.Run()) -} diff --git a/test/image/latin10k.txt b/test/image/latin10k.txt deleted file mode 100644 index 61341e00b..000000000 --- a/test/image/latin10k.txt +++ /dev/null @@ -1,33 +0,0 @@ -Lorem ipsum dolor sit amet, consectetur adipiscing elit. Cras ut placerat felis. Maecenas urna est, auctor a efficitur sit amet, egestas et augue. Curabitur dignissim scelerisque nunc vel cursus. Ut vehicula est pretium, consectetur nunc non, pharetra ligula. Curabitur ut ultricies metus. Suspendisse pulvinar, orci sed fermentum vestibulum, eros turpis molestie lectus, nec elementum risus dolor mattis felis. Donec ultrices ipsum sem, at pretium lacus convallis at. Mauris nulla enim, tincidunt non bibendum at, vehicula pulvinar mauris. - -Duis in dapibus turpis. Pellentesque maximus magna odio, ac congue libero laoreet quis. Maecenas euismod risus in justo aliquam accumsan. Nunc quis ornare arcu, sit amet sodales elit. Phasellus nec scelerisque nisl, a tincidunt arcu. Proin ornare est nunc, sed suscipit orci interdum et. Suspendisse condimentum venenatis diam in tempor. Aliquam egestas lectus in rutrum tempus. Donec id egestas eros. Donec molestie consequat purus, sed posuere odio venenatis vitae. Nunc placerat augue id vehicula varius. In hac habitasse platea dictumst. Proin at est accumsan, venenatis quam a, fermentum risus. Phasellus posuere pellentesque enim, id suscipit magna consequat ut. Quisque ut tortor ante. - -Cras ut vulputate metus, a laoreet lectus. Vivamus ultrices molestie odio in tristique. Morbi faucibus mi eget sollicitudin fringilla. Fusce vitae lacinia ligula. Sed egestas sed diam eu posuere. Maecenas justo nisl, venenatis vel nibh vel, cursus aliquam velit. Praesent lacinia dui id erat venenatis rhoncus. Morbi gravida felis ante, sit amet vehicula orci rhoncus vitae. - -Sed finibus sagittis dictum. Proin auctor suscipit sem et mattis. Phasellus libero ligula, pellentesque ut felis porttitor, fermentum sollicitudin orci. Nulla eu nulla nibh. Fusce a eros risus. Proin vel magna risus. Donec nec elit eleifend, scelerisque sapien vitae, pharetra quam. Donec porttitor mauris scelerisque, tempus orci hendrerit, dapibus felis. Nullam libero elit, sollicitudin a aliquam at, ultrices in erat. Mauris eget ligula sodales, porta turpis et, scelerisque odio. Mauris mollis leo vitae purus gravida, in tempor nunc efficitur. Nulla facilisis posuere augue, nec pellentesque lectus eleifend ac. Vestibulum convallis est a feugiat tincidunt. Donec vitae enim volutpat, tincidunt eros eu, malesuada nibh. - -Quisque molestie, magna ornare elementum convallis, erat enim sagittis ipsum, eget porttitor sapien arcu id purus. Donec ut cursus diam. Nulla rutrum nulla et mi fermentum, vel tempus tellus posuere. Proin vitae pharetra nulla, nec ornare ex. Nulla consequat, augue a accumsan euismod, turpis leo ornare ligula, a pulvinar enim dolor ut augue. Quisque volutpat, lectus a varius mollis, nisl eros feugiat sem, at egestas lacus justo eu elit. Vestibulum scelerisque mauris est, sagittis interdum nunc accumsan sit amet. Maecenas aliquet ex ut lacus ornare, eu sagittis nibh imperdiet. Duis ultrices nisi velit, sed sodales risus sollicitudin et. Vestibulum ante ipsum primis in faucibus orci luctus et ultrices posuere cubilia Curae; Etiam a accumsan augue, vitae pulvinar nulla. Pellentesque euismod sodales magna, nec luctus eros mattis eget. Sed lacinia suscipit lectus, eget consectetur dui pellentesque sed. Nullam nec mattis tellus. - -Aliquam erat volutpat. Praesent lobortis massa porttitor eros tincidunt, nec consequat diam pharetra. Duis efficitur non lorem sed mattis. Suspendisse justo nunc, pulvinar eu porttitor at, facilisis id eros. Suspendisse potenti. Cras molestie aliquet orci ut fermentum. In tempus aliquet eros nec suscipit. Suspendisse in mauris ut lectus ultrices blandit sit amet vitae est. Nam magna massa, porttitor ut semper id, feugiat vel quam. Suspendisse dignissim posuere scelerisque. Donec scelerisque lorem efficitur suscipit suscipit. Nunc luctus ligula et scelerisque lacinia. - -Suspendisse potenti. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Sed ultrices, sem in venenatis scelerisque, tellus ipsum porttitor urna, et iaculis lectus odio ac nisi. Integer luctus dui urna, at sollicitudin elit dapibus eu. Praesent nibh ante, porttitor a ante in, ullamcorper pretium felis. Aliquam vel tortor imperdiet, imperdiet lorem et, cursus mi. Proin tempus velit est, ut hendrerit metus gravida sed. Sed nibh sapien, faucibus quis ipsum in, scelerisque lacinia elit. In nec magna eu magna laoreet rhoncus. Donec vitae rutrum mauris. Integer urna felis, consequat at rhoncus vitae, auctor quis elit. Duis a pulvinar sem, nec gravida nisl. Nam non dapibus purus. Praesent vestibulum turpis nec erat porttitor, a scelerisque purus tincidunt. - -Nam fringilla leo nisi, nec placerat nisl luctus eget. Aenean malesuada nunc porta sapien sodales convallis. Suspendisse ut massa tempor, ullamcorper mi ut, faucibus turpis. Vivamus at sagittis metus. Donec varius ac mi eget sodales. Nulla feugiat, nulla eu fringilla fringilla, nunc lorem sollicitudin quam, vitae lacinia velit lorem eu orci. Mauris leo urna, pellentesque ac posuere non, pellentesque sit amet quam. - -Vestibulum porta diam urna, a aliquet nibh vestibulum et. Proin interdum bibendum nisl sed rhoncus. Sed vel diam hendrerit, faucibus ante et, hendrerit diam. Nunc dolor augue, mattis non dolor vel, luctus sodales neque. Cras malesuada fermentum dolor eu lobortis. Integer dapibus volutpat consequat. Maecenas posuere feugiat nunc. Donec vel mollis elit, volutpat consequat enim. Nulla id nisi finibus orci imperdiet elementum. Phasellus ultrices, elit vitae consequat rutrum, nisl est congue massa, quis condimentum justo nisi vitae turpis. Maecenas aliquet risus sit amet accumsan elementum. Proin non finibus elit, sit amet lobortis augue. - -Morbi pretium pulvinar sem vel sollicitudin. Proin imperdiet fringilla leo, non pellentesque lacus gravida nec. Vivamus ullamcorper consectetur ligula eu consectetur. Curabitur sit amet tempus purus. Curabitur quam quam, tincidunt eu tempus vel, volutpat at ipsum. Maecenas lobortis elit ac justo interdum, sit amet mattis ligula mollis. Sed posuere ligula et felis convallis tempor. Aliquam nec mollis velit. Donec varius sit amet erat at imperdiet. Nulla ipsum justo, tempor non sollicitudin gravida, dignissim vel orci. In hac habitasse platea dictumst. Cras cursus tellus id arcu aliquet accumsan. Phasellus ac erat dui. - -Duis mollis metus at mi luctus aliquam. Duis varius eget erat ac porttitor. Phasellus lobortis sagittis lacinia. Etiam sagittis eget erat in pulvinar. Phasellus sodales risus nec vulputate accumsan. Cras sit amet pellentesque dui. Praesent consequat felis mi, at vulputate diam convallis a. Donec hendrerit nibh vel justo consequat dictum. In euismod, dui sit amet malesuada suscipit, mauris ex rhoncus eros, sed ornare arcu nunc eu urna. Pellentesque eget erat augue. Integer rutrum mauris sem, nec sodales nulla cursus vel. Vivamus porta, urna vel varius vulputate, nulla arcu malesuada dui, a ultrices magna ante sed nibh. - -Morbi ultricies aliquam lorem id bibendum. Donec sit amet nunc vitae massa gravida eleifend hendrerit vel libero. Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Nulla vestibulum tempus condimentum. Aliquam dolor ipsum, condimentum in sapien et, tempor iaculis nulla. Aenean non pharetra augue. Maecenas mattis dignissim maximus. Fusce elementum tincidunt massa sit amet lobortis. Phasellus nec pharetra dui, et malesuada ante. Nullam commodo pretium tellus. Praesent sollicitudin, enim eget imperdiet scelerisque, odio felis vulputate dolor, eget auctor neque tellus ac lorem. - -In consectetur augue et sapien feugiat varius. Nam tortor mi, consectetur ac felis non, elementum venenatis augue. Suspendisse ut tellus in est sagittis cursus. Quisque faucibus, neque sit amet semper congue, nibh augue finibus odio, vitae interdum dolor arcu eget arcu. Curabitur dictum risus massa, non tincidunt urna molestie non. Maecenas eu quam purus. Donec vulputate, dui eu accumsan blandit, mauris tortor tristique mi, sed blandit leo quam id quam. Ut venenatis sagittis malesuada. Integer non auctor orci. Duis consectetur massa felis. Fusce euismod est sit amet bibendum finibus. Vestibulum dolor ex, tempor at elit in, iaculis cursus dui. Nunc sed neque ac risus rutrum tempus sit amet at ante. In hac habitasse platea dictumst. - -Donec rutrum, velit nec viverra tincidunt, est velit viverra neque, quis auctor leo ex at lectus. Morbi eget purus nisi. Aliquam lacus dui, interdum vitae elit at, venenatis dignissim est. Duis ac mollis lorem. Vivamus a vestibulum quam. Maecenas non metus dolor. Praesent tortor nunc, tristique at nisl molestie, vulputate eleifend diam. Integer ultrices lacus odio, vel imperdiet enim accumsan id. Sed ligula tortor, interdum eu velit eget, pharetra pulvinar magna. Sed non lacus in eros tincidunt sagittis ac vel justo. Donec vitae leo sagittis, accumsan ante sit amet, accumsan odio. Ut volutpat ultricies tortor. Vestibulum tempus purus et est tristique sagittis quis vitae turpis. - -Nam iaculis neque lacus, eget euismod turpis blandit eget. In hac habitasse platea dictumst. Phasellus justo neque, scelerisque sit amet risus ut, pretium commodo nisl. Phasellus auctor sapien sed ex bibendum fermentum. Proin maximus odio a ante ornare, a feugiat lorem egestas. Etiam efficitur tortor a ante tincidunt interdum. Nullam non est ac massa congue efficitur sit amet nec eros. Nullam at ipsum vel mauris tincidunt efficitur. Duis pulvinar nisl elit, id auctor risus laoreet ac. Sed nunc mauris, tristique id leo ut, condimentum congue nunc. Sed ultricies, mauris et convallis faucibus, justo ex faucibus est, at lobortis purus justo non arcu. Integer vel facilisis elit, dapibus imperdiet mauris. - -Pellentesque non mattis turpis, eget bibendum velit. Fusce sollicitudin ante ac tincidunt rhoncus. Praesent porta scelerisque consequat. Donec eleifend faucibus sollicitudin. Quisque vitae purus eget tortor tempor ultrices. Maecenas mauris diam, semper vitae est non, imperdiet tempor magna. Duis elit lacus, auctor vestibulum enim eget, rhoncus porttitor tortor. - -Donec non rhoncus nibh. Cras dapibus justo vitae nunc accumsan, id congue erat egestas. Aenean at ante ante. Duis eleifend imperdiet dREADALL diff --git a/test/image/mysql.sql b/test/image/mysql.sql deleted file mode 100644 index 51554b98d..000000000 --- a/test/image/mysql.sql +++ /dev/null @@ -1,23 +0,0 @@ -# Copyright 2018 The gVisor Authors. -# -# Licensed under the Apache License, Version 2.0 (the "License"); -# you may not use this file except in compliance with the License. -# You may obtain a copy of the License at -# -# http://www.apache.org/licenses/LICENSE-2.0 -# -# Unless required by applicable law or agreed to in writing, software -# distributed under the License is distributed on an "AS IS" BASIS, -# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -# See the License for the specific language governing permissions and -# limitations under the License. - -SHOW databases; -USE mysql; - -CREATE TABLE foo (id int); -INSERT INTO foo VALUES(1); -SELECT * FROM foo; -DROP TABLE foo; - -shutdown; diff --git a/test/image/ruby.rb b/test/image/ruby.rb deleted file mode 100644 index aced49c6d..000000000 --- a/test/image/ruby.rb +++ /dev/null @@ -1,23 +0,0 @@ -# Copyright 2018 The gVisor Authors. -# -# Licensed under the Apache License, Version 2.0 (the "License"); -# you may not use this file except in compliance with the License. -# You may obtain a copy of the License at -# -# http://www.apache.org/licenses/LICENSE-2.0 -# -# Unless required by applicable law or agreed to in writing, software -# distributed under the License is distributed on an "AS IS" BASIS, -# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -# See the License for the specific language governing permissions and -# limitations under the License. - -require 'sinatra' - -set :bind, "0.0.0.0" -set :port, 8080 - -get '/' do - 'Hello World' -end - diff --git a/test/image/ruby.sh b/test/image/ruby.sh deleted file mode 100644 index ebe8d5b0e..000000000 --- a/test/image/ruby.sh +++ /dev/null @@ -1,20 +0,0 @@ -#!/bin/bash - -# Copyright 2018 The gVisor Authors. -# -# Licensed under the Apache License, Version 2.0 (the "License"); -# you may not use this file except in compliance with the License. -# You may obtain a copy of the License at -# -# http://www.apache.org/licenses/LICENSE-2.0 -# -# Unless required by applicable law or agreed to in writing, software -# distributed under the License is distributed on an "AS IS" BASIS, -# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -# See the License for the specific language governing permissions and -# limitations under the License. - -set -e - -gem install sinatra -ruby /src/ruby.rb diff --git a/test/iptables/BUILD b/test/iptables/BUILD deleted file mode 100644 index 6bb3b82b5..000000000 --- a/test/iptables/BUILD +++ /dev/null @@ -1,36 +0,0 @@ -load("//tools:defs.bzl", "go_library", "go_test") - -package(licenses = ["notice"]) - -go_library( - name = "iptables", - testonly = 1, - srcs = [ - "filter_input.go", - "filter_output.go", - "iptables.go", - "iptables_util.go", - "nat.go", - ], - visibility = ["//test/iptables:__subpackages__"], - deps = [ - "//runsc/testutil", - ], -) - -go_test( - name = "iptables_test", - srcs = [ - "iptables_test.go", - ], - library = ":iptables", - tags = [ - "local", - "manual", - ], - deps = [ - "//pkg/log", - "//runsc/dockerutil", - "//runsc/testutil", - ], -) diff --git a/test/iptables/README.md b/test/iptables/README.md deleted file mode 100644 index cc8a2fcac..000000000 --- a/test/iptables/README.md +++ /dev/null @@ -1,54 +0,0 @@ -# iptables Tests - -iptables tests are run via `scripts/iptables_test.sh`. - -iptables requires raw socket support, so you must add the `--net-raw=true` flag -to `/etc/docker/daemon.json` in order to use it. - -## Test Structure - -Each test implements `TestCase`, providing (1) a function to run inside the -container and (2) a function to run locally. Those processes are given each -others' IP addresses. The test succeeds when both functions succeed. - -The function inside the container (`ContainerAction`) typically sets some -iptables rules and then tries to send or receive packets. The local function -(`LocalAction`) will typically just send or receive packets. - -### Adding Tests - -1) Add your test to the `iptables` package. - -2) Register the test in an `init` function via `RegisterTestCase` (see -`filter_input.go` as an example). - -3) Add it to `iptables_test.go` (see the other tests in that file). - -Your test is now runnable with bazel! - -## Run individual tests - -Build and install `runsc`. Re-run this when you modify gVisor: - -```bash -$ bazel build //runsc && sudo cp bazel-bin/runsc/linux_amd64_pure_stripped/runsc $(which runsc) -``` - -Build the testing Docker container. Re-run this when you modify the test code in -this directory: - -```bash -$ bazel run //test/iptables/runner:runner-image -- --norun -``` - -Run an individual test via: - -```bash -$ bazel test //test/iptables:iptables_test --test_filter=<TESTNAME> -``` - -To run an individual test with `runc`: - -```bash -$ bazel test //test/iptables:iptables_test --test_filter=<TESTNAME> --test_arg=--runtime=runc -``` diff --git a/test/iptables/filter_input.go b/test/iptables/filter_input.go deleted file mode 100644 index bd6059921..000000000 --- a/test/iptables/filter_input.go +++ /dev/null @@ -1,302 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package iptables - -import ( - "errors" - "fmt" - "net" - "time" -) - -const ( - dropPort = 2401 - acceptPort = 2402 - sendloopDuration = 2 * time.Second - network = "udp4" -) - -func init() { - RegisterTestCase(FilterInputDropAll{}) - RegisterTestCase(FilterInputDropDifferentUDPPort{}) - RegisterTestCase(FilterInputDropOnlyUDP{}) - RegisterTestCase(FilterInputDropTCPDestPort{}) - RegisterTestCase(FilterInputDropTCPSrcPort{}) - RegisterTestCase(FilterInputDropUDPPort{}) - RegisterTestCase(FilterInputDropUDP{}) -} - -// FilterInputDropUDP tests that we can drop UDP traffic. -type FilterInputDropUDP struct{} - -// Name implements TestCase.Name. -func (FilterInputDropUDP) Name() string { - return "FilterInputDropUDP" -} - -// ContainerAction implements TestCase.ContainerAction. -func (FilterInputDropUDP) ContainerAction(ip net.IP) error { - if err := filterTable("-A", "INPUT", "-p", "udp", "-j", "DROP"); err != nil { - return err - } - - // Listen for UDP packets on dropPort. - if err := listenUDP(dropPort, sendloopDuration); err == nil { - return fmt.Errorf("packets on port %d should have been dropped, but got a packet", dropPort) - } else if netErr, ok := err.(net.Error); !ok || !netErr.Timeout() { - return fmt.Errorf("error reading: %v", err) - } - - // At this point we know that reading timed out and never received a - // packet. - return nil -} - -// LocalAction implements TestCase.LocalAction. -func (FilterInputDropUDP) LocalAction(ip net.IP) error { - return sendUDPLoop(ip, dropPort, sendloopDuration) -} - -// FilterInputDropOnlyUDP tests that "-p udp -j DROP" only affects UDP traffic. -type FilterInputDropOnlyUDP struct{} - -// Name implements TestCase.Name. -func (FilterInputDropOnlyUDP) Name() string { - return "FilterInputDropOnlyUDP" -} - -// ContainerAction implements TestCase.ContainerAction. -func (FilterInputDropOnlyUDP) ContainerAction(ip net.IP) error { - if err := filterTable("-A", "INPUT", "-p", "udp", "-j", "DROP"); err != nil { - return err - } - - // Listen for a TCP connection, which should be allowed. - if err := listenTCP(acceptPort, sendloopDuration); err != nil { - return fmt.Errorf("failed to establish a connection %v", err) - } - - return nil -} - -// LocalAction implements TestCase.LocalAction. -func (FilterInputDropOnlyUDP) LocalAction(ip net.IP) error { - // Try to establish a TCP connection with the container, which should - // succeed. - return connectTCP(ip, acceptPort, dropPort, sendloopDuration) -} - -// FilterInputDropUDPPort tests that we can drop UDP traffic by port. -type FilterInputDropUDPPort struct{} - -// Name implements TestCase.Name. -func (FilterInputDropUDPPort) Name() string { - return "FilterInputDropUDPPort" -} - -// ContainerAction implements TestCase.ContainerAction. -func (FilterInputDropUDPPort) ContainerAction(ip net.IP) error { - if err := filterTable("-A", "INPUT", "-p", "udp", "-m", "udp", "--destination-port", fmt.Sprintf("%d", dropPort), "-j", "DROP"); err != nil { - return err - } - - // Listen for UDP packets on dropPort. - if err := listenUDP(dropPort, sendloopDuration); err == nil { - return fmt.Errorf("packets on port %d should have been dropped, but got a packet", dropPort) - } else if netErr, ok := err.(net.Error); !ok || !netErr.Timeout() { - return fmt.Errorf("error reading: %v", err) - } - - // At this point we know that reading timed out and never received a - // packet. - return nil -} - -// LocalAction implements TestCase.LocalAction. -func (FilterInputDropUDPPort) LocalAction(ip net.IP) error { - return sendUDPLoop(ip, dropPort, sendloopDuration) -} - -// FilterInputDropDifferentUDPPort tests that dropping traffic for a single UDP port -// doesn't drop packets on other ports. -type FilterInputDropDifferentUDPPort struct{} - -// Name implements TestCase.Name. -func (FilterInputDropDifferentUDPPort) Name() string { - return "FilterInputDropDifferentUDPPort" -} - -// ContainerAction implements TestCase.ContainerAction. -func (FilterInputDropDifferentUDPPort) ContainerAction(ip net.IP) error { - if err := filterTable("-A", "INPUT", "-p", "udp", "-m", "udp", "--destination-port", fmt.Sprintf("%d", dropPort), "-j", "DROP"); err != nil { - return err - } - - // Listen for UDP packets on another port. - if err := listenUDP(acceptPort, sendloopDuration); err != nil { - return fmt.Errorf("packets on port %d should be allowed, but encountered an error: %v", acceptPort, err) - } - - return nil -} - -// LocalAction implements TestCase.LocalAction. -func (FilterInputDropDifferentUDPPort) LocalAction(ip net.IP) error { - return sendUDPLoop(ip, acceptPort, sendloopDuration) -} - -// FilterInputDropTCPDestPort tests that connections are not accepted on specified source ports. -type FilterInputDropTCPDestPort struct{} - -// Name implements TestCase.Name. -func (FilterInputDropTCPDestPort) Name() string { - return "FilterInputDropTCPDestPort" -} - -// ContainerAction implements TestCase.ContainerAction. -func (FilterInputDropTCPDestPort) ContainerAction(ip net.IP) error { - if err := filterTable("-A", "INPUT", "-p", "tcp", "-m", "tcp", "--dport", fmt.Sprintf("%d", dropPort), "-j", "DROP"); err != nil { - return err - } - - // Listen for TCP packets on drop port. - if err := listenTCP(dropPort, sendloopDuration); err == nil { - return fmt.Errorf("connection on port %d should not be accepted, but got accepted", dropPort) - } - - return nil -} - -// LocalAction implements TestCase.LocalAction. -func (FilterInputDropTCPDestPort) LocalAction(ip net.IP) error { - if err := connectTCP(ip, dropPort, acceptPort, sendloopDuration); err == nil { - return fmt.Errorf("connection destined to port %d should not be accepted, but got accepted", dropPort) - } - - return nil -} - -// FilterInputDropTCPSrcPort tests that connections are not accepted on specified source ports. -type FilterInputDropTCPSrcPort struct{} - -// Name implements TestCase.Name. -func (FilterInputDropTCPSrcPort) Name() string { - return "FilterInputDropTCPSrcPort" -} - -// ContainerAction implements TestCase.ContainerAction. -func (FilterInputDropTCPSrcPort) ContainerAction(ip net.IP) error { - if err := filterTable("-A", "INPUT", "-p", "tcp", "-m", "tcp", "--sport", fmt.Sprintf("%d", dropPort), "-j", "DROP"); err != nil { - return err - } - - // Listen for TCP packets on accept port. - if err := listenTCP(acceptPort, sendloopDuration); err == nil { - return fmt.Errorf("connection destined to port %d should not be accepted, but got accepted", dropPort) - } - - return nil -} - -// LocalAction implements TestCase.LocalAction. -func (FilterInputDropTCPSrcPort) LocalAction(ip net.IP) error { - if err := connectTCP(ip, acceptPort, dropPort, sendloopDuration); err == nil { - return fmt.Errorf("connection on port %d should not be acceptedi, but got accepted", dropPort) - } - - return nil -} - -// FilterInputDropAll tests that we can drop all traffic to the INPUT chain. -type FilterInputDropAll struct{} - -// Name implements TestCase.Name. -func (FilterInputDropAll) Name() string { - return "FilterInputDropAll" -} - -// ContainerAction implements TestCase.ContainerAction. -func (FilterInputDropAll) ContainerAction(ip net.IP) error { - if err := filterTable("-A", "INPUT", "-j", "DROP"); err != nil { - return err - } - - // Listen for all packets on dropPort. - if err := listenUDP(dropPort, sendloopDuration); err == nil { - return fmt.Errorf("packets should have been dropped, but got a packet") - } else if netErr, ok := err.(net.Error); !ok || !netErr.Timeout() { - return fmt.Errorf("error reading: %v", err) - } - - // At this point we know that reading timed out and never received a - // packet. - return nil -} - -// LocalAction implements TestCase.LocalAction. -func (FilterInputDropAll) LocalAction(ip net.IP) error { - return sendUDPLoop(ip, dropPort, sendloopDuration) -} - -// FilterInputMultiUDPRules verifies that multiple UDP rules are applied -// correctly. This has the added benefit of testing whether we're serializing -// rules correctly -- if we do it incorrectly, the iptables tool will -// misunderstand and save the wrong tables. -type FilterInputMultiUDPRules struct{} - -// Name implements TestCase.Name. -func (FilterInputMultiUDPRules) Name() string { - return "FilterInputMultiUDPRules" -} - -// ContainerAction implements TestCase.ContainerAction. -func (FilterInputMultiUDPRules) ContainerAction(ip net.IP) error { - if err := filterTable("-A", "INPUT", "-p", "udp", "-m", "udp", "--destination-port", fmt.Sprintf("%d", dropPort), "-j", "DROP"); err != nil { - return err - } - if err := filterTable("-A", "INPUT", "-p", "udp", "-m", "udp", "--destination-port", fmt.Sprintf("%d", acceptPort), "-j", "ACCEPT"); err != nil { - return err - } - return filterTable("-L") -} - -// LocalAction implements TestCase.LocalAction. -func (FilterInputMultiUDPRules) LocalAction(ip net.IP) error { - // No-op. - return nil -} - -// FilterInputRequireProtocolUDP checks that "-m udp" requires "-p udp" to be -// specified. -type FilterInputRequireProtocolUDP struct{} - -// Name implements TestCase.Name. -func (FilterInputRequireProtocolUDP) Name() string { - return "FilterInputRequireProtocolUDP" -} - -// ContainerAction implements TestCase.ContainerAction. -func (FilterInputRequireProtocolUDP) ContainerAction(ip net.IP) error { - if err := filterTable("-A", "INPUT", "-m", "udp", "--destination-port", fmt.Sprintf("%d", dropPort), "-j", "DROP"); err == nil { - return errors.New("expected iptables to fail with out \"-p udp\", but succeeded") - } - return nil -} - -// LocalAction implements TestCase.LocalAction. -func (FilterInputRequireProtocolUDP) LocalAction(ip net.IP) error { - // No-op. - return nil -} diff --git a/test/iptables/filter_output.go b/test/iptables/filter_output.go deleted file mode 100644 index ee2c49f9a..000000000 --- a/test/iptables/filter_output.go +++ /dev/null @@ -1,87 +0,0 @@ -// Copyright 2020 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package iptables - -import ( - "fmt" - "net" -) - -func init() { - RegisterTestCase(FilterOutputDropTCPDestPort{}) - RegisterTestCase(FilterOutputDropTCPSrcPort{}) -} - -// FilterOutputDropTCPDestPort tests that connections are not accepted on specified source ports. -type FilterOutputDropTCPDestPort struct{} - -// Name implements TestCase.Name. -func (FilterOutputDropTCPDestPort) Name() string { - return "FilterOutputDropTCPDestPort" -} - -// ContainerAction implements TestCase.ContainerAction. -func (FilterOutputDropTCPDestPort) ContainerAction(ip net.IP) error { - if err := filterTable("-A", "OUTPUT", "-p", "tcp", "-m", "tcp", "--dport", fmt.Sprintf("%d", dropPort), "-j", "DROP"); err != nil { - return err - } - - // Listen for TCP packets on accept port. - if err := listenTCP(acceptPort, sendloopDuration); err == nil { - return fmt.Errorf("connection destined to port %d should not be accepted, but got accepted", dropPort) - } - - return nil -} - -// LocalAction implements TestCase.LocalAction. -func (FilterOutputDropTCPDestPort) LocalAction(ip net.IP) error { - if err := connectTCP(ip, acceptPort, dropPort, sendloopDuration); err == nil { - return fmt.Errorf("connection on port %d should not be accepted, but got accepted", dropPort) - } - - return nil -} - -// FilterOutputDropTCPSrcPort tests that connections are not accepted on specified source ports. -type FilterOutputDropTCPSrcPort struct{} - -// Name implements TestCase.Name. -func (FilterOutputDropTCPSrcPort) Name() string { - return "FilterOutputDropTCPSrcPort" -} - -// ContainerAction implements TestCase.ContainerAction. -func (FilterOutputDropTCPSrcPort) ContainerAction(ip net.IP) error { - if err := filterTable("-A", "OUTPUT", "-p", "tcp", "-m", "tcp", "--sport", fmt.Sprintf("%d", dropPort), "-j", "DROP"); err != nil { - return err - } - - // Listen for TCP packets on drop port. - if err := listenTCP(dropPort, sendloopDuration); err == nil { - return fmt.Errorf("connection on port %d should not be accepted, but got accepted", dropPort) - } - - return nil -} - -// LocalAction implements TestCase.LocalAction. -func (FilterOutputDropTCPSrcPort) LocalAction(ip net.IP) error { - if err := connectTCP(ip, dropPort, acceptPort, sendloopDuration); err == nil { - return fmt.Errorf("connection destined to port %d should not be accepted, but got accepted", dropPort) - } - - return nil -} diff --git a/test/iptables/iptables.go b/test/iptables/iptables.go deleted file mode 100644 index 2e565d988..000000000 --- a/test/iptables/iptables.go +++ /dev/null @@ -1,53 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// Package iptables contains a set of iptables tests implemented as TestCases -package iptables - -import ( - "fmt" - "net" -) - -// IPExchangePort is the port the container listens on to receive the IP -// address of the local process. -const IPExchangePort = 2349 - -// A TestCase contains one action to run in the container and one to run -// locally. The actions run concurrently and each must succeed for the test -// pass. -type TestCase interface { - // Name returns the name of the test. - Name() string - - // ContainerAction runs inside the container. It receives the IP of the - // local process. - ContainerAction(ip net.IP) error - - // LocalAction runs locally. It receives the IP of the container. - LocalAction(ip net.IP) error -} - -// Tests maps test names to TestCase. -// -// New TestCases are added by calling RegisterTestCase in an init function. -var Tests = map[string]TestCase{} - -// RegisterTestCase registers tc so it can be run. -func RegisterTestCase(tc TestCase) { - if _, ok := Tests[tc.Name()]; ok { - panic(fmt.Sprintf("TestCase %s already registered.", tc.Name())) - } - Tests[tc.Name()] = tc -} diff --git a/test/iptables/iptables_test.go b/test/iptables/iptables_test.go deleted file mode 100644 index 41909582a..000000000 --- a/test/iptables/iptables_test.go +++ /dev/null @@ -1,227 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package iptables - -import ( - "flag" - "fmt" - "net" - "os" - "path" - "testing" - "time" - - "gvisor.dev/gvisor/pkg/log" - "gvisor.dev/gvisor/runsc/dockerutil" - "gvisor.dev/gvisor/runsc/testutil" -) - -const timeout = 18 * time.Second - -var image = flag.String("image", "bazel/test/iptables/runner:runner-image", "image to run tests in") - -type result struct { - output string - err error -} - -// singleTest runs a TestCase. Each test follows a pattern: -// - Create a container. -// - Get the container's IP. -// - Send the container our IP. -// - Start a new goroutine running the local action of the test. -// - Wait for both the container and local actions to finish. -// -// Container output is logged to $TEST_UNDECLARED_OUTPUTS_DIR if it exists, or -// to stderr. -func singleTest(test TestCase) error { - if _, ok := Tests[test.Name()]; !ok { - return fmt.Errorf("no test found with name %q. Has it been registered?", test.Name()) - } - - // Create and start the container. - cont := dockerutil.MakeDocker("gvisor-iptables") - defer cont.CleanUp() - resultChan := make(chan *result) - go func() { - output, err := cont.RunFg("--cap-add=NET_ADMIN", *image, "-name", test.Name()) - logContainer(output, err) - resultChan <- &result{output, err} - }() - - // Get the container IP. - ip, err := getIP(cont) - if err != nil { - return fmt.Errorf("failed to get container IP: %v", err) - } - - // Give the container our IP. - if err := sendIP(ip); err != nil { - return fmt.Errorf("failed to send IP to container: %v", err) - } - - // Run our side of the test. - errChan := make(chan error) - go func() { - errChan <- test.LocalAction(ip) - }() - - // Wait for both the container and local tests to finish. - var res *result - to := time.After(timeout) - for localDone := false; res == nil || !localDone; { - select { - case res = <-resultChan: - log.Infof("Container finished.") - case err, localDone = <-errChan: - log.Infof("Local finished.") - if err != nil { - return fmt.Errorf("local test failed: %v", err) - } - case <-to: - return fmt.Errorf("timed out after %f seconds", timeout.Seconds()) - } - } - - return res.err -} - -func getIP(cont dockerutil.Docker) (net.IP, error) { - // The container might not have started yet, so retry a few times. - var ipStr string - to := time.After(timeout) - for ipStr == "" { - ipStr, _ = cont.FindIP() - select { - case <-to: - return net.IP{}, fmt.Errorf("timed out getting IP after %f seconds", timeout.Seconds()) - default: - time.Sleep(250 * time.Millisecond) - } - } - ip := net.ParseIP(ipStr) - if ip == nil { - return net.IP{}, fmt.Errorf("invalid IP: %q", ipStr) - } - log.Infof("Container has IP of %s", ipStr) - return ip, nil -} - -func sendIP(ip net.IP) error { - contAddr := net.TCPAddr{ - IP: ip, - Port: IPExchangePort, - } - var conn *net.TCPConn - // The container may not be listening when we first connect, so retry - // upon error. - cb := func() error { - c, err := net.DialTCP("tcp4", nil, &contAddr) - conn = c - return err - } - if err := testutil.Poll(cb, timeout); err != nil { - return fmt.Errorf("timed out waiting to send IP, most recent error: %v", err) - } - if _, err := conn.Write([]byte{0}); err != nil { - return fmt.Errorf("error writing to container: %v", err) - } - return nil -} - -func logContainer(output string, err error) { - msg := fmt.Sprintf("Container error: %v\nContainer output:\n%v", err, output) - if artifactsDir := os.Getenv("TEST_UNDECLARED_OUTPUTS_DIR"); artifactsDir != "" { - fpath := path.Join(artifactsDir, "container.log") - if file, err := os.OpenFile(fpath, os.O_WRONLY|os.O_CREATE, 0644); err != nil { - log.Warningf("Failed to open log file %q: %v", fpath, err) - } else { - defer file.Close() - if _, err := file.Write([]byte(msg)); err == nil { - return - } - log.Warningf("Failed to write to log file %s: %v", fpath, err) - } - } - - // We couldn't write to the output directory -- just log to stderr. - log.Infof(msg) -} - -func TestFilterInputDropUDP(t *testing.T) { - if err := singleTest(FilterInputDropUDP{}); err != nil { - t.Fatal(err) - } -} - -func TestFilterInputDropUDPPort(t *testing.T) { - if err := singleTest(FilterInputDropUDPPort{}); err != nil { - t.Fatal(err) - } -} - -func TestFilterInputDropDifferentUDPPort(t *testing.T) { - if err := singleTest(FilterInputDropDifferentUDPPort{}); err != nil { - t.Fatal(err) - } -} - -func TestFilterInputDropAll(t *testing.T) { - if err := singleTest(FilterInputDropAll{}); err != nil { - t.Fatal(err) - } -} - -func TestFilterInputDropOnlyUDP(t *testing.T) { - if err := singleTest(FilterInputDropOnlyUDP{}); err != nil { - t.Fatal(err) - } -} - -func TestNATRedirectUDPPort(t *testing.T) { - if err := singleTest(NATRedirectUDPPort{}); err != nil { - t.Fatal(err) - } -} - -func TestNATDropUDP(t *testing.T) { - if err := singleTest(NATDropUDP{}); err != nil { - t.Fatal(err) - } -} - -func TestFilterInputDropTCPDestPort(t *testing.T) { - if err := singleTest(FilterInputDropTCPDestPort{}); err != nil { - t.Fatal(err) - } -} - -func TestFilterInputDropTCPSrcPort(t *testing.T) { - if err := singleTest(FilterInputDropTCPSrcPort{}); err != nil { - t.Fatal(err) - } -} - -func TestFilterOutputDropTCPDestPort(t *testing.T) { - if err := singleTest(FilterOutputDropTCPDestPort{}); err != nil { - t.Fatal(err) - } -} - -func TestFilterOutputDropTCPSrcPort(t *testing.T) { - if err := singleTest(FilterOutputDropTCPSrcPort{}); err != nil { - t.Fatal(err) - } -} diff --git a/test/iptables/iptables_util.go b/test/iptables/iptables_util.go deleted file mode 100644 index 043114c78..000000000 --- a/test/iptables/iptables_util.go +++ /dev/null @@ -1,132 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package iptables - -import ( - "fmt" - "net" - "os/exec" - "time" - - "gvisor.dev/gvisor/runsc/testutil" -) - -const iptablesBinary = "iptables" - -// filterTable calls `iptables -t filter` with the given args. -func filterTable(args ...string) error { - args = append([]string{"-t", "filter"}, args...) - cmd := exec.Command(iptablesBinary, args...) - if out, err := cmd.CombinedOutput(); err != nil { - return fmt.Errorf("error running iptables with args %v\nerror: %v\noutput: %s", args, err, string(out)) - } - return nil -} - -// listenUDP listens on a UDP port and returns the value of net.Conn.Read() for -// the first read on that port. -func listenUDP(port int, timeout time.Duration) error { - localAddr := net.UDPAddr{ - Port: port, - } - conn, err := net.ListenUDP(network, &localAddr) - if err != nil { - return err - } - defer conn.Close() - conn.SetDeadline(time.Now().Add(timeout)) - _, err = conn.Read([]byte{0}) - return err -} - -// sendUDPLoop sends 1 byte UDP packets repeatedly to the IP and port specified -// over a duration. -func sendUDPLoop(ip net.IP, port int, duration time.Duration) error { - // Send packets for a few seconds. - remote := net.UDPAddr{ - IP: ip, - Port: port, - } - conn, err := net.DialUDP(network, nil, &remote) - if err != nil { - return err - } - defer conn.Close() - - to := time.After(duration) - for timedOut := false; !timedOut; { - // This may return an error (connection refused) if the remote - // hasn't started listening yet or they're dropping our - // packets. So we ignore Write errors and depend on the remote - // to report a failure if it doesn't get a packet it needs. - conn.Write([]byte{0}) - select { - case <-to: - timedOut = true - default: - time.Sleep(200 * time.Millisecond) - } - } - - return nil -} - -// listenTCP listens for connections on a TCP port. -func listenTCP(port int, timeout time.Duration) error { - localAddr := net.TCPAddr{ - Port: port, - } - - // Starts listening on port. - lConn, err := net.ListenTCP("tcp4", &localAddr) - if err != nil { - return err - } - defer lConn.Close() - - // Accept connections on port. - lConn.SetDeadline(time.Now().Add(timeout)) - conn, err := lConn.AcceptTCP() - if err != nil { - return err - } - conn.Close() - return nil -} - -// connectTCP connects the TCP server over specified local port, server IP and remote/server port. -func connectTCP(ip net.IP, remotePort, localPort int, timeout time.Duration) error { - contAddr := net.TCPAddr{ - IP: ip, - Port: remotePort, - } - // The container may not be listening when we first connect, so retry - // upon error. - callback := func() error { - localAddr := net.TCPAddr{ - Port: localPort, - } - conn, err := net.DialTCP("tcp4", &localAddr, &contAddr) - if conn != nil { - conn.Close() - } - return err - } - if err := testutil.Poll(callback, timeout); err != nil { - return fmt.Errorf("timed out waiting to send IP, most recent error: %v", err) - } - - return nil -} diff --git a/test/iptables/nat.go b/test/iptables/nat.go deleted file mode 100644 index b5c6f927e..000000000 --- a/test/iptables/nat.go +++ /dev/null @@ -1,80 +0,0 @@ -// Copyright 2020 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package iptables - -import ( - "fmt" - "net" -) - -const ( - redirectPort = 42 -) - -func init() { - RegisterTestCase(NATRedirectUDPPort{}) - RegisterTestCase(NATDropUDP{}) -} - -// NATRedirectUDPPort tests that packets are redirected to different port. -type NATRedirectUDPPort struct{} - -// Name implements TestCase.Name. -func (NATRedirectUDPPort) Name() string { - return "NATRedirectUDPPort" -} - -// ContainerAction implements TestCase.ContainerAction. -func (NATRedirectUDPPort) ContainerAction(ip net.IP) error { - if err := filterTable("-t", "nat", "-A", "PREROUTING", "-p", "udp", "-j", "REDIRECT", "--to-ports", fmt.Sprintf("%d", redirectPort)); err != nil { - return err - } - - if err := listenUDP(redirectPort, sendloopDuration); err != nil { - return fmt.Errorf("packets on port %d should be allowed, but encountered an error: %v", redirectPort, err) - } - return nil -} - -// LocalAction implements TestCase.LocalAction. -func (NATRedirectUDPPort) LocalAction(ip net.IP) error { - return sendUDPLoop(ip, acceptPort, sendloopDuration) -} - -// NATDropUDP tests that packets are not received in ports other than redirect port. -type NATDropUDP struct{} - -// Name implements TestCase.Name. -func (NATDropUDP) Name() string { - return "NATDropUDP" -} - -// ContainerAction implements TestCase.ContainerAction. -func (NATDropUDP) ContainerAction(ip net.IP) error { - if err := filterTable("-t", "nat", "-A", "PREROUTING", "-p", "udp", "-j", "REDIRECT", "--to-ports", fmt.Sprintf("%d", redirectPort)); err != nil { - return err - } - - if err := listenUDP(acceptPort, sendloopDuration); err == nil { - return fmt.Errorf("packets on port %d should have been redirected to port %d", acceptPort, redirectPort) - } - - return nil -} - -// LocalAction implements TestCase.LocalAction. -func (NATDropUDP) LocalAction(ip net.IP) error { - return sendUDPLoop(ip, acceptPort, sendloopDuration) -} diff --git a/test/iptables/runner/BUILD b/test/iptables/runner/BUILD deleted file mode 100644 index b9199387a..000000000 --- a/test/iptables/runner/BUILD +++ /dev/null @@ -1,23 +0,0 @@ -load("//tools:defs.bzl", "container_image", "go_binary", "go_image") - -package(licenses = ["notice"]) - -go_binary( - name = "runner", - testonly = 1, - srcs = ["main.go"], - deps = ["//test/iptables"], -) - -container_image( - name = "iptables-base", - base = "@iptables-test//image", -) - -go_image( - name = "runner-image", - testonly = 1, - srcs = ["main.go"], - base = ":iptables-base", - deps = ["//test/iptables"], -) diff --git a/test/iptables/runner/Dockerfile b/test/iptables/runner/Dockerfile deleted file mode 100644 index b77db44a1..000000000 --- a/test/iptables/runner/Dockerfile +++ /dev/null @@ -1,4 +0,0 @@ -# This Dockerfile builds the image hosted at -# gcr.io/gvisor-presubmit/iptables-test. -FROM ubuntu -RUN apt update && apt install -y iptables diff --git a/test/iptables/runner/main.go b/test/iptables/runner/main.go deleted file mode 100644 index 3c794114e..000000000 --- a/test/iptables/runner/main.go +++ /dev/null @@ -1,70 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// Package main runs iptables tests from within a docker container. -package main - -import ( - "flag" - "fmt" - "log" - "net" - - "gvisor.dev/gvisor/test/iptables" -) - -var name = flag.String("name", "", "name of the test to run") - -func main() { - flag.Parse() - - // Find out which test we're running. - test, ok := iptables.Tests[*name] - if !ok { - log.Fatalf("No test found named %q", *name) - } - log.Printf("Running test %q", *name) - - // Get the IP of the local process. - ip, err := getIP() - if err != nil { - log.Fatal(err) - } - - // Run the test. - if err := test.ContainerAction(ip); err != nil { - log.Fatalf("Failed running test %q: %v", *name, err) - } -} - -// getIP listens for a connection from the local process and returns the source -// IP of that connection. -func getIP() (net.IP, error) { - localAddr := net.TCPAddr{ - Port: iptables.IPExchangePort, - } - listener, err := net.ListenTCP("tcp4", &localAddr) - if err != nil { - return net.IP{}, fmt.Errorf("failed listening for IP: %v", err) - } - defer listener.Close() - conn, err := listener.AcceptTCP() - if err != nil { - return net.IP{}, fmt.Errorf("failed accepting IP: %v", err) - } - defer conn.Close() - log.Printf("Connected to %v", conn.RemoteAddr()) - - return conn.RemoteAddr().(*net.TCPAddr).IP, nil -} diff --git a/test/packetdrill/BUILD b/test/packetdrill/BUILD deleted file mode 100644 index d113555b1..000000000 --- a/test/packetdrill/BUILD +++ /dev/null @@ -1,8 +0,0 @@ -load("defs.bzl", "packetdrill_test") - -package(licenses = ["notice"]) - -packetdrill_test( - name = "fin_wait2_timeout", - scripts = ["fin_wait2_timeout.pkt"], -) diff --git a/test/packetdrill/Dockerfile b/test/packetdrill/Dockerfile deleted file mode 100644 index bd4451355..000000000 --- a/test/packetdrill/Dockerfile +++ /dev/null @@ -1,9 +0,0 @@ -FROM ubuntu:bionic - -RUN apt-get update -RUN apt-get install -y net-tools git iptables iputils-ping netcat tcpdump jq tar -RUN hash -r -RUN git clone --branch packetdrill-v2.0 \ - https://github.com/google/packetdrill.git -RUN cd packetdrill/gtests/net/packetdrill && ./configure && \ - apt-get install -y bison flex make && make diff --git a/test/packetdrill/defs.bzl b/test/packetdrill/defs.bzl deleted file mode 100644 index 8623ce7b1..000000000 --- a/test/packetdrill/defs.bzl +++ /dev/null @@ -1,87 +0,0 @@ -"""Defines a rule for packetdrill test targets.""" - -def _packetdrill_test_impl(ctx): - test_runner = ctx.executable._test_runner - runner = ctx.actions.declare_file("%s-runner" % ctx.label.name) - - script_paths = [] - for script in ctx.files.scripts: - script_paths.append(script.short_path) - runner_content = "\n".join([ - "#!/bin/bash", - # This test will run part in a distinct user namespace. This can cause - # permission problems, because all runfiles may not be owned by the - # current user, and no other users will be mapped in that namespace. - # Make sure that everything is readable here. - "find . -type f -exec chmod a+rx {} \\;", - "find . -type d -exec chmod a+rx {} \\;", - "%s %s --init_script %s $@ -- %s\n" % ( - test_runner.short_path, - " ".join(ctx.attr.flags), - ctx.files._init_script[0].short_path, - " ".join(script_paths), - ), - ]) - ctx.actions.write(runner, runner_content, is_executable = True) - - transitive_files = depset() - if hasattr(ctx.attr._test_runner, "data_runfiles"): - transitive_files = depset(ctx.attr._test_runner.data_runfiles.files) - runfiles = ctx.runfiles( - files = [test_runner] + ctx.files._init_script + ctx.files.scripts, - transitive_files = transitive_files, - collect_default = True, - collect_data = True, - ) - return [DefaultInfo(executable = runner, runfiles = runfiles)] - -_packetdrill_test = rule( - attrs = { - "_test_runner": attr.label( - executable = True, - cfg = "host", - allow_files = True, - default = "packetdrill_test.sh", - ), - "_init_script": attr.label( - allow_single_file = True, - default = "packetdrill_setup.sh", - ), - "flags": attr.string_list( - mandatory = False, - default = [], - ), - "scripts": attr.label_list( - mandatory = True, - allow_files = True, - ), - }, - test = True, - implementation = _packetdrill_test_impl, -) - -_PACKETDRILL_TAGS = ["local", "manual"] - -def packetdrill_linux_test(name, **kwargs): - if "tags" not in kwargs: - kwargs["tags"] = _PACKETDRILL_TAGS - _packetdrill_test( - name = name + "_linux_test", - flags = ["--dut_platform", "linux"], - **kwargs - ) - -def packetdrill_netstack_test(name, **kwargs): - if "tags" not in kwargs: - kwargs["tags"] = _PACKETDRILL_TAGS - _packetdrill_test( - name = name + "_netstack_test", - # This is the default runtime unless - # "--test_arg=--runtime=OTHER_RUNTIME" is used to override the value. - flags = ["--dut_platform", "netstack", "--runtime", "runsc-d"], - **kwargs - ) - -def packetdrill_test(**kwargs): - packetdrill_linux_test(**kwargs) - packetdrill_netstack_test(**kwargs) diff --git a/test/packetdrill/fin_wait2_timeout.pkt b/test/packetdrill/fin_wait2_timeout.pkt deleted file mode 100644 index 613f0bec9..000000000 --- a/test/packetdrill/fin_wait2_timeout.pkt +++ /dev/null @@ -1,23 +0,0 @@ -// Test that a socket in FIN_WAIT_2 eventually times out and a subsequent -// packet generates a RST. - -0 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3 -+0 bind(3, ..., ...) = 0 - -+0 listen(3, 1) = 0 - -// Establish a connection without timestamps. -+0 < S 0:0(0) win 32792 <mss 1460,sackOK,nop,nop,nop,wscale 7> -+0 > S. 0:0(0) ack 1 <...> -+0 < P. 1:1(0) ack 1 win 257 - -+0.100 accept(3, ..., ...) = 4 -// set FIN_WAIT2 timeout to 1 seconds. -+0.100 setsockopt(4, SOL_TCP, TCP_LINGER2, [1], 4) = 0 -+0 close(4) = 0 - -+0 > F. 1:1(0) ack 1 <...> -+0 < . 1:1(0) ack 2 win 257 - -+1.1 < . 1:1(0) ack 2 win 257 -+0 > R 2:2(0) win 0 diff --git a/test/packetdrill/packetdrill_setup.sh b/test/packetdrill/packetdrill_setup.sh deleted file mode 100755 index b858072f0..000000000 --- a/test/packetdrill/packetdrill_setup.sh +++ /dev/null @@ -1,26 +0,0 @@ -#!/bin/bash - -# Copyright 2018 The gVisor Authors. -# -# Licensed under the Apache License, Version 2.0 (the "License"); -# you may not use this file except in compliance with the License. -# You may obtain a copy of the License at -# -# http://www.apache.org/licenses/LICENSE-2.0 -# -# Unless required by applicable law or agreed to in writing, software -# distributed under the License is distributed on an "AS IS" BASIS, -# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -# See the License for the specific language governing permissions and -# limitations under the License. - -# This script runs both within the sentry context and natively. It should tweak -# TCP parameters to match expectations found in the script files. -sysctl -q net.ipv4.tcp_sack=1 -sysctl -q net.ipv4.tcp_rmem="4096 2097152 $((8*1024*1024))" -sysctl -q net.ipv4.tcp_wmem="4096 2097152 $((8*1024*1024))" - -# There may be errors from the above, but they will show up in the test logs and -# we always want to proceed from this point. It's possible that values were -# already set correctly and the nodes were not available in the namespace. -exit 0 diff --git a/test/packetdrill/packetdrill_test.sh b/test/packetdrill/packetdrill_test.sh deleted file mode 100755 index 0b22dfd5c..000000000 --- a/test/packetdrill/packetdrill_test.sh +++ /dev/null @@ -1,225 +0,0 @@ -#!/bin/bash - -# Copyright 2020 The gVisor Authors. -# -# Licensed under the Apache License, Version 2.0 (the "License"); -# you may not use this file except in compliance with the License. -# You may obtain a copy of the License at -# -# http://www.apache.org/licenses/LICENSE-2.0 -# -# Unless required by applicable law or agreed to in writing, software -# distributed under the License is distributed on an "AS IS" BASIS, -# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -# See the License for the specific language governing permissions and -# limitations under the License. - -# Run a packetdrill test. Two docker containers are made, one for the -# Device-Under-Test (DUT) and one for the test runner. Each is attached with -# two networks, one for control packets that aid the test and one for test -# packets which are sent as part of the test and observed for correctness. - -set -euxo pipefail - -function failure() { - local lineno=$1 - local msg=$2 - local filename="$0" - echo "FAIL: $filename:$lineno: $msg" -} -trap 'failure ${LINENO} "$BASH_COMMAND"' ERR - -declare -r LONGOPTS="dut_platform:,init_script:,runtime:" - -# Don't use declare below so that the error from getopt will end the script. -PARSED=$(getopt --options "" --longoptions=$LONGOPTS --name "$0" -- "$@") - -eval set -- "$PARSED" - -while true; do - case "$1" in - --dut_platform) - # Either "linux" or "netstack". - declare -r DUT_PLATFORM="$2" - shift 2 - ;; - --init_script) - declare -r INIT_SCRIPT="$2" - shift 2 - ;; - --runtime) - # Not readonly because there might be multiple --runtime arguments and we - # want to use just the last one. Only used if --dut_platform is - # "netstack". - declare RUNTIME="$2" - shift 2 - ;; - --) - shift - break - ;; - *) - echo "Programming error" - exit 3 - esac -done - -# All the other arguments are scripts. -declare -r scripts="$@" - -# Check that the required flags are defined in a way that is safe for "set -u". -if [[ "${DUT_PLATFORM-}" == "netstack" ]]; then - if [[ -z "${RUNTIME-}" ]]; then - echo "FAIL: Missing --runtime argument: ${RUNTIME-}" - exit 2 - fi - declare -r RUNTIME_ARG="--runtime ${RUNTIME}" -elif [[ "${DUT_PLATFORM-}" == "linux" ]]; then - declare -r RUNTIME_ARG="" -else - echo "FAIL: Bad or missing --dut_platform argument: ${DUT_PLATFORM-}" - exit 2 -fi -if [[ ! -x "${INIT_SCRIPT-}" ]]; then - echo "FAIL: Bad or missing --init_script: ${INIT_SCRIPT-}" - exit 2 -fi - -# Variables specific to the control network and interface start with CTRL_. -# Variables specific to the test network and interface start with TEST_. -# Variables specific to the DUT start with DUT_. -# Variables specific to the test runner start with TEST_RUNNER_. -declare -r PACKETDRILL="/packetdrill/gtests/net/packetdrill/packetdrill" -# Use random numbers so that test networks don't collide. -declare -r CTRL_NET="ctrl_net-${RANDOM}${RANDOM}" -declare -r TEST_NET="test_net-${RANDOM}${RANDOM}" -declare -r tolerance_usecs=100000 -# On both DUT and test runner, testing packets are on the eth2 interface. -declare -r TEST_DEVICE="eth2" -# Number of bits in the *_NET_PREFIX variables. -declare -r NET_MASK="24" -function new_net_prefix() { - # Class C, 192.0.0.0 to 223.255.255.255, transitionally has mask 24. - echo "$(shuf -i 192-223 -n 1).$(shuf -i 0-255 -n 1).$(shuf -i 0-255 -n 1)" -} -# Last bits of the DUT's IP address. -declare -r DUT_NET_SUFFIX=".10" -# Control port. -declare -r CTRL_PORT="40000" -# Last bits of the test runner's IP address. -declare -r TEST_RUNNER_NET_SUFFIX=".20" -declare -r TIMEOUT="60" -declare -r IMAGE_TAG="gcr.io/gvisor-presubmit/packetdrill" - -# Make sure that docker is installed. -docker --version - -function finish { - local cleanup_success=1 - for net in "${CTRL_NET}" "${TEST_NET}"; do - # Kill all processes attached to ${net}. - for docker_command in "kill" "rm"; do - (docker network inspect "${net}" \ - --format '{{range $key, $value := .Containers}}{{$key}} {{end}}' \ - | xargs -r docker "${docker_command}") || \ - cleanup_success=0 - done - # Remove the network. - docker network rm "${net}" || \ - cleanup_success=0 - done - - if ((!$cleanup_success)); then - echo "FAIL: Cleanup command failed" - exit 4 - fi -} -trap finish EXIT - -# Subnet for control packets between test runner and DUT. -declare CTRL_NET_PREFIX=$(new_net_prefix) -while ! docker network create \ - "--subnet=${CTRL_NET_PREFIX}.0/${NET_MASK}" "${CTRL_NET}"; do - sleep 0.1 - declare CTRL_NET_PREFIX=$(new_net_prefix) -done - -# Subnet for the packets that are part of the test. -declare TEST_NET_PREFIX=$(new_net_prefix) -while ! docker network create \ - "--subnet=${TEST_NET_PREFIX}.0/${NET_MASK}" "${TEST_NET}"; do - sleep 0.1 - declare TEST_NET_PREFIX=$(new_net_prefix) -done - -docker pull "${IMAGE_TAG}" - -# Create the DUT container and connect to network. -DUT=$(docker create ${RUNTIME_ARG} --privileged --rm \ - --stop-timeout ${TIMEOUT} -it ${IMAGE_TAG}) -docker network connect "${CTRL_NET}" \ - --ip "${CTRL_NET_PREFIX}${DUT_NET_SUFFIX}" "${DUT}" \ - || (docker kill ${DUT}; docker rm ${DUT}; false) -docker network connect "${TEST_NET}" \ - --ip "${TEST_NET_PREFIX}${DUT_NET_SUFFIX}" "${DUT}" \ - || (docker kill ${DUT}; docker rm ${DUT}; false) -docker start "${DUT}" - -# Create the test runner container and connect to network. -TEST_RUNNER=$(docker create --privileged --rm \ - --stop-timeout ${TIMEOUT} -it ${IMAGE_TAG}) -docker network connect "${CTRL_NET}" \ - --ip "${CTRL_NET_PREFIX}${TEST_RUNNER_NET_SUFFIX}" "${TEST_RUNNER}" \ - || (docker kill ${TEST_RUNNER}; docker rm ${REST_RUNNER}; false) -docker network connect "${TEST_NET}" \ - --ip "${TEST_NET_PREFIX}${TEST_RUNNER_NET_SUFFIX}" "${TEST_RUNNER}" \ - || (docker kill ${TEST_RUNNER}; docker rm ${REST_RUNNER}; false) -docker start "${TEST_RUNNER}" - -# Run tcpdump in the test runner unbuffered, without dns resolution, just on the -# interface with the test packets. -docker exec -t ${TEST_RUNNER} tcpdump -U -n -i "${TEST_DEVICE}" & - -# Start a packetdrill server on the test_runner. The packetdrill server sends -# packets and asserts that they are received. -docker exec -d "${TEST_RUNNER}" \ - ${PACKETDRILL} --wire_server --wire_server_dev="${TEST_DEVICE}" \ - --wire_server_ip="${CTRL_NET_PREFIX}${TEST_RUNNER_NET_SUFFIX}" \ - --wire_server_port="${CTRL_PORT}" \ - --local_ip="${TEST_NET_PREFIX}${TEST_RUNNER_NET_SUFFIX}" \ - --remote_ip="${TEST_NET_PREFIX}${DUT_NET_SUFFIX}" - -# Because the Linux kernel receives the SYN-ACK but didn't send the SYN it will -# issue a RST. To prevent this IPtables can be used to filter those out. -docker exec "${TEST_RUNNER}" \ - iptables -A OUTPUT -p tcp --tcp-flags RST RST -j DROP - -# Wait for the packetdrill server on the test runner to come. Attempt to -# connect to it from the DUT every 100 milliseconds until success. -while ! docker exec "${DUT}" \ - nc -zv "${CTRL_NET_PREFIX}${TEST_RUNNER_NET_SUFFIX}" "${CTRL_PORT}"; do - sleep 0.1 -done - -# Copy the packetdrill setup script to the DUT. -docker cp -L "${INIT_SCRIPT}" "${DUT}:packetdrill_setup.sh" - -# Copy the packetdrill scripts to the DUT. -declare -a dut_scripts -for script in $scripts; do - docker cp -L "${script}" "${DUT}:$(basename ${script})" - dut_scripts+=("/$(basename ${script})") -done - -# Start a packetdrill client on the DUT. The packetdrill client runs POSIX -# socket commands and also sends instructions to the server. -docker exec -t "${DUT}" \ - ${PACKETDRILL} --wire_client --wire_client_dev="${TEST_DEVICE}" \ - --wire_server_ip="${CTRL_NET_PREFIX}${TEST_RUNNER_NET_SUFFIX}" \ - --wire_server_port="${CTRL_PORT}" \ - --local_ip="${TEST_NET_PREFIX}${DUT_NET_SUFFIX}" \ - --remote_ip="${TEST_NET_PREFIX}${TEST_RUNNER_NET_SUFFIX}" \ - --init_scripts=/packetdrill_setup.sh \ - --tolerance_usecs="${tolerance_usecs}" "${dut_scripts[@]}" - -echo PASS: No errors. diff --git a/test/root/BUILD b/test/root/BUILD deleted file mode 100644 index 23ce2a70f..000000000 --- a/test/root/BUILD +++ /dev/null @@ -1,43 +0,0 @@ -load("//tools:defs.bzl", "go_library", "go_test") - -package(licenses = ["notice"]) - -go_library( - name = "root", - srcs = ["root.go"], -) - -go_test( - name = "root_test", - size = "small", - srcs = [ - "cgroup_test.go", - "chroot_test.go", - "crictl_test.go", - "main_test.go", - "oom_score_adj_test.go", - ], - data = [ - "//runsc", - ], - library = ":root", - tags = [ - # Requires docker and runsc to be configured before the test runs. - # Also test only runs as root. - "manual", - "local", - ], - visibility = ["//:sandbox"], - deps = [ - "//runsc/boot", - "//runsc/cgroup", - "//runsc/container", - "//runsc/criutil", - "//runsc/dockerutil", - "//runsc/specutils", - "//runsc/testutil", - "//test/root/testdata", - "@com_github_opencontainers_runtime-spec//specs-go:go_default_library", - "@com_github_syndtr_gocapability//capability:go_default_library", - ], -) diff --git a/test/root/cgroup_test.go b/test/root/cgroup_test.go deleted file mode 100644 index 4038661cb..000000000 --- a/test/root/cgroup_test.go +++ /dev/null @@ -1,286 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package root - -import ( - "bufio" - "fmt" - "io/ioutil" - "os" - "os/exec" - "path/filepath" - "strconv" - "strings" - "testing" - "time" - - "gvisor.dev/gvisor/runsc/cgroup" - "gvisor.dev/gvisor/runsc/dockerutil" - "gvisor.dev/gvisor/runsc/testutil" -) - -func verifyPid(pid int, path string) error { - f, err := os.Open(path) - if err != nil { - return err - } - defer f.Close() - - var gots []int - scanner := bufio.NewScanner(f) - for scanner.Scan() { - got, err := strconv.Atoi(scanner.Text()) - if err != nil { - return err - } - if got == pid { - return nil - } - gots = append(gots, got) - } - if scanner.Err() != nil { - return scanner.Err() - } - return fmt.Errorf("got: %s, want: %d", gots, pid) -} - -// TestCgroup sets cgroup options and checks that cgroup was properly configured. -func TestMemCGroup(t *testing.T) { - allocMemSize := 128 << 20 - if err := dockerutil.Pull("python"); err != nil { - t.Fatal("docker pull failed:", err) - } - d := dockerutil.MakeDocker("memusage-test") - - // Start a new container and allocate the specified about of memory. - args := []string{ - "--memory=256MB", - "python", - "python", - "-c", - fmt.Sprintf("import time; s = 'a' * %d; time.sleep(100)", allocMemSize), - } - if err := d.Run(args...); err != nil { - t.Fatal("docker create failed:", err) - } - defer d.CleanUp() - - gid, err := d.ID() - if err != nil { - t.Fatalf("Docker.ID() failed: %v", err) - } - t.Logf("cgroup ID: %s", gid) - - path := filepath.Join("/sys/fs/cgroup/memory/docker", gid, "memory.usage_in_bytes") - memUsage := 0 - - // Wait when the container will allocate memory. - start := time.Now() - for time.Now().Sub(start) < 30*time.Second { - outRaw, err := ioutil.ReadFile(path) - if err != nil { - t.Fatalf("failed to read %q: %v", path, err) - } - out := strings.TrimSpace(string(outRaw)) - memUsage, err = strconv.Atoi(out) - if err != nil { - t.Fatalf("Atoi(%v): %v", out, err) - } - - if memUsage > allocMemSize { - return - } - - time.Sleep(100 * time.Millisecond) - } - - t.Fatalf("%vMB is less than %vMB: %v", memUsage>>20, allocMemSize>>20) -} - -// TestCgroup sets cgroup options and checks that cgroup was properly configured. -func TestCgroup(t *testing.T) { - if err := dockerutil.Pull("alpine"); err != nil { - t.Fatal("docker pull failed:", err) - } - d := dockerutil.MakeDocker("cgroup-test") - - // This is not a comprehensive list of attributes. - // - // Note that we are specifically missing cpusets, which fail if specified. - // In any case, it's unclear if cpusets can be reliably tested here: these - // are often run on a single core virtual machine, and there is only a single - // CPU available in our current set, and every container's set. - attrs := []struct { - arg string - ctrl string - file string - want string - skipIfNotFound bool - }{ - { - arg: "--cpu-shares=1000", - ctrl: "cpu", - file: "cpu.shares", - want: "1000", - }, - { - arg: "--cpu-period=2000", - ctrl: "cpu", - file: "cpu.cfs_period_us", - want: "2000", - }, - { - arg: "--cpu-quota=3000", - ctrl: "cpu", - file: "cpu.cfs_quota_us", - want: "3000", - }, - { - arg: "--kernel-memory=100MB", - ctrl: "memory", - file: "memory.kmem.limit_in_bytes", - want: "104857600", - }, - { - arg: "--memory=1GB", - ctrl: "memory", - file: "memory.limit_in_bytes", - want: "1073741824", - }, - { - arg: "--memory-reservation=500MB", - ctrl: "memory", - file: "memory.soft_limit_in_bytes", - want: "524288000", - }, - { - arg: "--memory-swap=2GB", - ctrl: "memory", - file: "memory.memsw.limit_in_bytes", - want: "2147483648", - skipIfNotFound: true, // swap may be disabled on the machine. - }, - { - arg: "--memory-swappiness=5", - ctrl: "memory", - file: "memory.swappiness", - want: "5", - }, - { - arg: "--blkio-weight=750", - ctrl: "blkio", - file: "blkio.weight", - want: "750", - }, - } - - args := make([]string, 0, len(attrs)) - for _, attr := range attrs { - args = append(args, attr.arg) - } - - args = append(args, "alpine", "sleep", "10000") - if err := d.Run(args...); err != nil { - t.Fatal("docker create failed:", err) - } - defer d.CleanUp() - - gid, err := d.ID() - if err != nil { - t.Fatalf("Docker.ID() failed: %v", err) - } - t.Logf("cgroup ID: %s", gid) - - // Check list of attributes defined above. - for _, attr := range attrs { - path := filepath.Join("/sys/fs/cgroup", attr.ctrl, "docker", gid, attr.file) - out, err := ioutil.ReadFile(path) - if err != nil { - if os.IsNotExist(err) && attr.skipIfNotFound { - t.Logf("skipped %s/%s", attr.ctrl, attr.file) - continue - } - t.Fatalf("failed to read %q: %v", path, err) - } - if got := strings.TrimSpace(string(out)); got != attr.want { - t.Errorf("arg: %q, cgroup attribute %s/%s, got: %q, want: %q", attr.arg, attr.ctrl, attr.file, got, attr.want) - } - } - - // Check that sandbox is inside cgroup. - controllers := []string{ - "blkio", - "cpu", - "cpuset", - "memory", - "net_cls", - "net_prio", - "devices", - "freezer", - "perf_event", - "pids", - "systemd", - } - pid, err := d.SandboxPid() - if err != nil { - t.Fatalf("SandboxPid: %v", err) - } - for _, ctrl := range controllers { - path := filepath.Join("/sys/fs/cgroup", ctrl, "docker", gid, "cgroup.procs") - if err := verifyPid(pid, path); err != nil { - t.Errorf("cgroup control %q processes: %v", ctrl, err) - } - } -} - -func TestCgroupParent(t *testing.T) { - if err := dockerutil.Pull("alpine"); err != nil { - t.Fatal("docker pull failed:", err) - } - d := dockerutil.MakeDocker("cgroup-test") - - parent := testutil.RandomName("runsc") - if err := d.Run("--cgroup-parent", parent, "alpine", "sleep", "10000"); err != nil { - t.Fatal("docker create failed:", err) - } - defer d.CleanUp() - gid, err := d.ID() - if err != nil { - t.Fatalf("Docker.ID() failed: %v", err) - } - t.Logf("cgroup ID: %s", gid) - - // Check that sandbox is inside cgroup. - pid, err := d.SandboxPid() - if err != nil { - t.Fatalf("SandboxPid: %v", err) - } - - // Finds cgroup for the sandbox's parent process to check that cgroup is - // created in the right location relative to the parent. - cmd := fmt.Sprintf("grep PPid: /proc/%d/status | sed 's/PPid:\\s//'", pid) - ppid, err := exec.Command("bash", "-c", cmd).CombinedOutput() - if err != nil { - t.Fatalf("Executing %q: %v", cmd, err) - } - cgroups, err := cgroup.LoadPaths(strings.TrimSpace(string(ppid))) - if err != nil { - t.Fatalf("cgroup.LoadPath(%s): %v", ppid, err) - } - path := filepath.Join("/sys/fs/cgroup/memory", cgroups["memory"], parent, gid, "cgroup.procs") - if err := verifyPid(pid, path); err != nil { - t.Errorf("cgroup control %q processes: %v", "memory", err) - } -} diff --git a/test/root/chroot_test.go b/test/root/chroot_test.go deleted file mode 100644 index be0f63d18..000000000 --- a/test/root/chroot_test.go +++ /dev/null @@ -1,142 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// Package root is used for tests that requires sysadmin privileges run. -package root - -import ( - "fmt" - "io/ioutil" - "os/exec" - "path/filepath" - "strconv" - "strings" - "testing" - - "gvisor.dev/gvisor/runsc/dockerutil" -) - -// TestChroot verifies that the sandbox is chroot'd and that mounts are cleaned -// up after the sandbox is destroyed. -func TestChroot(t *testing.T) { - d := dockerutil.MakeDocker("chroot-test") - if err := d.Run("alpine", "sleep", "10000"); err != nil { - t.Fatalf("docker run failed: %v", err) - } - defer d.CleanUp() - - pid, err := d.SandboxPid() - if err != nil { - t.Fatalf("Docker.SandboxPid(): %v", err) - } - - // Check that sandbox is chroot'ed. - procRoot := filepath.Join("/proc", strconv.Itoa(pid), "root") - chroot, err := filepath.EvalSymlinks(procRoot) - if err != nil { - t.Fatalf("error resolving /proc/<pid>/root symlink: %v", err) - } - if chroot != "/" { - t.Errorf("sandbox is not chroot'd, it should be inside: /, got: %q", chroot) - } - - path, err := filepath.EvalSymlinks(filepath.Join("/proc", strconv.Itoa(pid), "cwd")) - if err != nil { - t.Fatalf("error resolving /proc/<pid>/cwd symlink: %v", err) - } - if chroot != path { - t.Errorf("sandbox current dir is wrong, want: %q, got: %q", chroot, path) - } - - fi, err := ioutil.ReadDir(procRoot) - if err != nil { - t.Fatalf("error listing %q: %v", chroot, err) - } - if want, got := 1, len(fi); want != got { - t.Fatalf("chroot dir got %d entries, want %d", got, want) - } - - // chroot dir is prepared by runsc and should contains only /proc. - if fi[0].Name() != "proc" { - t.Errorf("chroot got children %v, want %v", fi[0].Name(), "proc") - } - - d.CleanUp() -} - -func TestChrootGofer(t *testing.T) { - d := dockerutil.MakeDocker("chroot-test") - if err := d.Run("alpine", "sleep", "10000"); err != nil { - t.Fatalf("docker run failed: %v", err) - } - defer d.CleanUp() - - // It's tricky to find gofers. Get sandbox PID first, then find parent. From - // parent get all immediate children, remove the sandbox, and everything else - // are gofers. - sandPID, err := d.SandboxPid() - if err != nil { - t.Fatalf("Docker.SandboxPid(): %v", err) - } - - // Find sandbox's parent PID. - cmd := fmt.Sprintf("grep PPid /proc/%d/status | awk '{print $2}'", sandPID) - parent, err := exec.Command("sh", "-c", cmd).CombinedOutput() - if err != nil { - t.Fatalf("failed to fetch runsc (%d) parent PID: %v, out:\n%s", sandPID, err, string(parent)) - } - parentPID, err := strconv.Atoi(strings.TrimSpace(string(parent))) - if err != nil { - t.Fatalf("failed to parse PPID %q: %v", string(parent), err) - } - - // Get all children from parent. - childrenOut, err := exec.Command("/usr/bin/pgrep", "-P", strconv.Itoa(parentPID)).CombinedOutput() - if err != nil { - t.Fatalf("failed to fetch containerd-shim children: %v", err) - } - children := strings.Split(strings.TrimSpace(string(childrenOut)), "\n") - - // This where the root directory is mapped on the host and that's where the - // gofer must have chroot'd to. - root := "/root" - - for _, child := range children { - childPID, err := strconv.Atoi(child) - if err != nil { - t.Fatalf("failed to parse child PID %q: %v", child, err) - } - if childPID == sandPID { - // Skip the sandbox, all other immediate children are gofers. - continue - } - - // Check that gofer is chroot'ed. - chroot, err := filepath.EvalSymlinks(filepath.Join("/proc", child, "root")) - if err != nil { - t.Fatalf("error resolving /proc/<pid>/root symlink: %v", err) - } - if root != chroot { - t.Errorf("gofer chroot is wrong, want: %q, got: %q", root, chroot) - } - - path, err := filepath.EvalSymlinks(filepath.Join("/proc", child, "cwd")) - if err != nil { - t.Fatalf("error resolving /proc/<pid>/cwd symlink: %v", err) - } - if root != path { - t.Errorf("gofer current dir is wrong, want: %q, got: %q", root, path) - } - } -} diff --git a/test/root/crictl_test.go b/test/root/crictl_test.go deleted file mode 100644 index 3f90c4c6a..000000000 --- a/test/root/crictl_test.go +++ /dev/null @@ -1,295 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package root - -import ( - "bytes" - "fmt" - "io" - "io/ioutil" - "log" - "net/http" - "os" - "os/exec" - "path" - "path/filepath" - "strings" - "testing" - "time" - - "gvisor.dev/gvisor/runsc/criutil" - "gvisor.dev/gvisor/runsc/dockerutil" - "gvisor.dev/gvisor/runsc/specutils" - "gvisor.dev/gvisor/runsc/testutil" - "gvisor.dev/gvisor/test/root/testdata" -) - -// Tests for crictl have to be run as root (rather than in a user namespace) -// because crictl creates named network namespaces in /var/run/netns/. - -// TestCrictlSanity refers to b/112433158. -func TestCrictlSanity(t *testing.T) { - // Setup containerd and crictl. - crictl, cleanup, err := setup(t) - if err != nil { - t.Fatalf("failed to setup crictl: %v", err) - } - defer cleanup() - podID, contID, err := crictl.StartPodAndContainer("httpd", testdata.Sandbox, testdata.Httpd) - if err != nil { - t.Fatal(err) - } - - // Look for the httpd page. - if err = httpGet(crictl, podID, "index.html"); err != nil { - t.Fatalf("failed to get page: %v", err) - } - - // Stop everything. - if err := crictl.StopPodAndContainer(podID, contID); err != nil { - t.Fatal(err) - } -} - -// TestMountPaths refers to b/117635704. -func TestMountPaths(t *testing.T) { - // Setup containerd and crictl. - crictl, cleanup, err := setup(t) - if err != nil { - t.Fatalf("failed to setup crictl: %v", err) - } - defer cleanup() - podID, contID, err := crictl.StartPodAndContainer("httpd", testdata.Sandbox, testdata.HttpdMountPaths) - if err != nil { - t.Fatal(err) - } - - // Look for the directory available at /test. - if err = httpGet(crictl, podID, "test"); err != nil { - t.Fatalf("failed to get page: %v", err) - } - - // Stop everything. - if err := crictl.StopPodAndContainer(podID, contID); err != nil { - t.Fatal(err) - } -} - -// TestMountPaths refers to b/118728671. -func TestMountOverSymlinks(t *testing.T) { - // Setup containerd and crictl. - crictl, cleanup, err := setup(t) - if err != nil { - t.Fatalf("failed to setup crictl: %v", err) - } - defer cleanup() - podID, contID, err := crictl.StartPodAndContainer("k8s.gcr.io/busybox", testdata.Sandbox, testdata.MountOverSymlink) - if err != nil { - t.Fatal(err) - } - - out, err := crictl.Exec(contID, "readlink", "/etc/resolv.conf") - if err != nil { - t.Fatal(err) - } - if want := "/tmp/resolv.conf"; !strings.Contains(string(out), want) { - t.Fatalf("/etc/resolv.conf is not pointing to %q: %q", want, string(out)) - } - - etc, err := crictl.Exec(contID, "cat", "/etc/resolv.conf") - if err != nil { - t.Fatal(err) - } - tmp, err := crictl.Exec(contID, "cat", "/tmp/resolv.conf") - if err != nil { - t.Fatal(err) - } - if tmp != etc { - t.Fatalf("file content doesn't match:\n\t/etc/resolv.conf: %s\n\t/tmp/resolv.conf: %s", string(etc), string(tmp)) - } - - // Stop everything. - if err := crictl.StopPodAndContainer(podID, contID); err != nil { - t.Fatal(err) - } -} - -// TestHomeDir tests that the HOME environment variable is set for -// multi-containers. -func TestHomeDir(t *testing.T) { - // Setup containerd and crictl. - crictl, cleanup, err := setup(t) - if err != nil { - t.Fatalf("failed to setup crictl: %v", err) - } - defer cleanup() - contSpec := testdata.SimpleSpec("root", "k8s.gcr.io/busybox", []string{"sleep", "1000"}) - podID, contID, err := crictl.StartPodAndContainer("k8s.gcr.io/busybox", testdata.Sandbox, contSpec) - if err != nil { - t.Fatal(err) - } - - t.Run("root container", func(t *testing.T) { - out, err := crictl.Exec(contID, "sh", "-c", "echo $HOME") - if err != nil { - t.Fatal(err) - } - if got, want := strings.TrimSpace(string(out)), "/root"; got != want { - t.Fatalf("Home directory invalid. Got %q, Want : %q", got, want) - } - }) - - t.Run("sub-container", func(t *testing.T) { - // Create a sub container in the same pod. - subContSpec := testdata.SimpleSpec("subcontainer", "k8s.gcr.io/busybox", []string{"sleep", "1000"}) - subContID, err := crictl.StartContainer(podID, "k8s.gcr.io/busybox", testdata.Sandbox, subContSpec) - if err != nil { - t.Fatal(err) - } - - out, err := crictl.Exec(subContID, "sh", "-c", "echo $HOME") - if err != nil { - t.Fatal(err) - } - if got, want := strings.TrimSpace(string(out)), "/root"; got != want { - t.Fatalf("Home directory invalid. Got %q, Want: %q", got, want) - } - - if err := crictl.StopContainer(subContID); err != nil { - t.Fatal(err) - } - }) - - // Stop everything. - if err := crictl.StopPodAndContainer(podID, contID); err != nil { - t.Fatal(err) - } - -} - -// setup sets up before a test. Specifically it: -// * Creates directories and a socket for containerd to utilize. -// * Runs containerd and waits for it to reach a "ready" state for testing. -// * Returns a cleanup function that should be called at the end of the test. -func setup(t *testing.T) (*criutil.Crictl, func(), error) { - var cleanups []func() - cleanupFunc := func() { - for i := len(cleanups) - 1; i >= 0; i-- { - cleanups[i]() - } - } - cleanup := specutils.MakeCleanup(cleanupFunc) - defer cleanup.Clean() - - // Create temporary containerd root and state directories, and a socket - // via which crictl and containerd communicate. - containerdRoot, err := ioutil.TempDir(testutil.TmpDir(), "containerd-root") - if err != nil { - t.Fatalf("failed to create containerd root: %v", err) - } - cleanups = append(cleanups, func() { os.RemoveAll(containerdRoot) }) - containerdState, err := ioutil.TempDir(testutil.TmpDir(), "containerd-state") - if err != nil { - t.Fatalf("failed to create containerd state: %v", err) - } - cleanups = append(cleanups, func() { os.RemoveAll(containerdState) }) - sockAddr := filepath.Join(testutil.TmpDir(), "containerd-test.sock") - - // We rewrite a configuration. This is based on the current docker - // configuration for the runtime under test. - runtime, err := dockerutil.RuntimePath() - if err != nil { - t.Fatalf("error discovering runtime path: %v", err) - } - config, err := testutil.WriteTmpFile("containerd-config", testdata.ContainerdConfig(runtime)) - if err != nil { - t.Fatalf("failed to write containerd config") - } - cleanups = append(cleanups, func() { os.RemoveAll(config) }) - - // Start containerd. - containerd := exec.Command(getContainerd(), - "--config", config, - "--log-level", "debug", - "--root", containerdRoot, - "--state", containerdState, - "--address", sockAddr) - cleanups = append(cleanups, func() { - if err := testutil.KillCommand(containerd); err != nil { - log.Printf("error killing containerd: %v", err) - } - }) - containerdStderr, err := containerd.StderrPipe() - if err != nil { - t.Fatalf("failed to get containerd stderr: %v", err) - } - containerdStdout, err := containerd.StdoutPipe() - if err != nil { - t.Fatalf("failed to get containerd stdout: %v", err) - } - if err := containerd.Start(); err != nil { - t.Fatalf("failed running containerd: %v", err) - } - - // Wait for containerd to boot. Then put all containerd output into a - // buffer to be logged at the end of the test. - testutil.WaitUntilRead(containerdStderr, "Start streaming server", nil, 10*time.Second) - stdoutBuf := &bytes.Buffer{} - stderrBuf := &bytes.Buffer{} - go func() { io.Copy(stdoutBuf, containerdStdout) }() - go func() { io.Copy(stderrBuf, containerdStderr) }() - cleanups = append(cleanups, func() { - t.Logf("containerd stdout: %s", string(stdoutBuf.Bytes())) - t.Logf("containerd stderr: %s", string(stderrBuf.Bytes())) - }) - - cleanup.Release() - return criutil.NewCrictl(20*time.Second, sockAddr), cleanupFunc, nil -} - -// httpGet GETs the contents of a file served from a pod on port 80. -func httpGet(crictl *criutil.Crictl, podID, filePath string) error { - // Get the IP of the httpd server. - ip, err := crictl.PodIP(podID) - if err != nil { - return fmt.Errorf("failed to get IP from pod %q: %v", podID, err) - } - - // GET the page. We may be waiting for the server to start, so retry - // with a timeout. - var resp *http.Response - cb := func() error { - r, err := http.Get(fmt.Sprintf("http://%s", path.Join(ip, filePath))) - resp = r - return err - } - if err := testutil.Poll(cb, 20*time.Second); err != nil { - return err - } - defer resp.Body.Close() - - if resp.StatusCode != 200 { - return fmt.Errorf("bad status returned: %d", resp.StatusCode) - } - return nil -} - -func getContainerd() string { - // Use the local path if it exists, otherwise, use the system one. - if _, err := os.Stat("/usr/local/bin/containerd"); err == nil { - return "/usr/local/bin/containerd" - } - return "/usr/bin/containerd" -} diff --git a/test/root/main_test.go b/test/root/main_test.go deleted file mode 100644 index d74dec85f..000000000 --- a/test/root/main_test.go +++ /dev/null @@ -1,49 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package root - -import ( - "flag" - "fmt" - "os" - "testing" - - "github.com/syndtr/gocapability/capability" - "gvisor.dev/gvisor/runsc/dockerutil" - "gvisor.dev/gvisor/runsc/specutils" -) - -// TestMain is the main function for root tests. This function checks the -// supported docker version, required capabilities, and configures the executable -// path for runsc. -func TestMain(m *testing.M) { - flag.Parse() - - if !specutils.HasCapabilities(capability.CAP_SYS_ADMIN, capability.CAP_DAC_OVERRIDE) { - fmt.Println("Test requires sysadmin privileges to run. Try again with sudo.") - os.Exit(1) - } - - dockerutil.EnsureSupportedDockerVersion() - - // Configure exe for tests. - path, err := dockerutil.RuntimePath() - if err != nil { - panic(err.Error()) - } - specutils.ExePath = path - - os.Exit(m.Run()) -} diff --git a/test/root/oom_score_adj_test.go b/test/root/oom_score_adj_test.go deleted file mode 100644 index 126f0975a..000000000 --- a/test/root/oom_score_adj_test.go +++ /dev/null @@ -1,386 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package root - -import ( - "fmt" - "os" - "testing" - - specs "github.com/opencontainers/runtime-spec/specs-go" - "gvisor.dev/gvisor/runsc/boot" - "gvisor.dev/gvisor/runsc/container" - "gvisor.dev/gvisor/runsc/specutils" - "gvisor.dev/gvisor/runsc/testutil" -) - -var ( - maxOOMScoreAdj = 1000 - highOOMScoreAdj = 500 - lowOOMScoreAdj = -500 - minOOMScoreAdj = -1000 -) - -// Tests for oom_score_adj have to be run as root (rather than in a user -// namespace) because we need to adjust oom_score_adj for PIDs other than our -// own and test values below 0. - -// TestOOMScoreAdjSingle tests that oom_score_adj is set properly in a -// single container sandbox. -func TestOOMScoreAdjSingle(t *testing.T) { - rootDir, err := testutil.SetupRootDir() - if err != nil { - t.Fatalf("error creating root dir: %v", err) - } - defer os.RemoveAll(rootDir) - - conf := testutil.TestConfig() - conf.RootDir = rootDir - - ppid, err := specutils.GetParentPid(os.Getpid()) - if err != nil { - t.Fatalf("getting parent pid: %v", err) - } - parentOOMScoreAdj, err := specutils.GetOOMScoreAdj(ppid) - if err != nil { - t.Fatalf("getting parent oom_score_adj: %v", err) - } - - testCases := []struct { - Name string - - // OOMScoreAdj is the oom_score_adj set to the OCI spec. If nil then - // no value is set. - OOMScoreAdj *int - }{ - { - Name: "max", - OOMScoreAdj: &maxOOMScoreAdj, - }, - { - Name: "high", - OOMScoreAdj: &highOOMScoreAdj, - }, - { - Name: "low", - OOMScoreAdj: &lowOOMScoreAdj, - }, - { - Name: "min", - OOMScoreAdj: &minOOMScoreAdj, - }, - { - Name: "nil", - OOMScoreAdj: &parentOOMScoreAdj, - }, - } - - for _, testCase := range testCases { - t.Run(testCase.Name, func(t *testing.T) { - id := testutil.UniqueContainerID() - s := testutil.NewSpecWithArgs("sleep", "1000") - s.Process.OOMScoreAdj = testCase.OOMScoreAdj - - containers, cleanup, err := startContainers(conf, []*specs.Spec{s}, []string{id}) - if err != nil { - t.Fatalf("error starting containers: %v", err) - } - defer cleanup() - - c := containers[0] - - // Verify the gofer's oom_score_adj - if testCase.OOMScoreAdj != nil { - goferScore, err := specutils.GetOOMScoreAdj(c.GoferPid) - if err != nil { - t.Fatalf("error reading gofer oom_score_adj: %v", err) - } - if goferScore != *testCase.OOMScoreAdj { - t.Errorf("gofer oom_score_adj got: %d, want: %d", goferScore, *testCase.OOMScoreAdj) - } - - // Verify the sandbox's oom_score_adj. - // - // The sandbox should be the same for all containers so just use - // the first one. - sandboxPid := c.Sandbox.Pid - sandboxScore, err := specutils.GetOOMScoreAdj(sandboxPid) - if err != nil { - t.Fatalf("error reading sandbox oom_score_adj: %v", err) - } - if sandboxScore != *testCase.OOMScoreAdj { - t.Errorf("sandbox oom_score_adj got: %d, want: %d", sandboxScore, *testCase.OOMScoreAdj) - } - } - }) - } -} - -// TestOOMScoreAdjMulti tests that oom_score_adj is set properly in a -// multi-container sandbox. -func TestOOMScoreAdjMulti(t *testing.T) { - rootDir, err := testutil.SetupRootDir() - if err != nil { - t.Fatalf("error creating root dir: %v", err) - } - defer os.RemoveAll(rootDir) - - conf := testutil.TestConfig() - conf.RootDir = rootDir - - ppid, err := specutils.GetParentPid(os.Getpid()) - if err != nil { - t.Fatalf("getting parent pid: %v", err) - } - parentOOMScoreAdj, err := specutils.GetOOMScoreAdj(ppid) - if err != nil { - t.Fatalf("getting parent oom_score_adj: %v", err) - } - - testCases := []struct { - Name string - - // OOMScoreAdj is the oom_score_adj set to the OCI spec. If nil then - // no value is set. One value for each container. The first value is the - // root container. - OOMScoreAdj []*int - - // Expected is the expected oom_score_adj of the sandbox. If nil, then - // this value is ignored. - Expected *int - - // Remove is a set of container indexes to remove from the sandbox. - Remove []int - - // ExpectedAfterRemove is the expected oom_score_adj of the sandbox - // after containers are removed. Ignored if nil. - ExpectedAfterRemove *int - }{ - // A single container CRI test case. This should not happen in - // practice as there should be at least one container besides the pause - // container. However, we include a test case to ensure sane behavior. - { - Name: "single", - OOMScoreAdj: []*int{&highOOMScoreAdj}, - Expected: &parentOOMScoreAdj, - }, - { - Name: "multi_no_value", - OOMScoreAdj: []*int{nil, nil, nil}, - Expected: &parentOOMScoreAdj, - }, - { - Name: "multi_non_nil_root", - OOMScoreAdj: []*int{&minOOMScoreAdj, nil, nil}, - Expected: &parentOOMScoreAdj, - }, - { - Name: "multi_value", - OOMScoreAdj: []*int{&minOOMScoreAdj, &highOOMScoreAdj, &lowOOMScoreAdj}, - // The lowest value excluding the root container is expected. - Expected: &lowOOMScoreAdj, - }, - { - Name: "multi_min_value", - OOMScoreAdj: []*int{&minOOMScoreAdj, &lowOOMScoreAdj}, - // The lowest value excluding the root container is expected. - Expected: &lowOOMScoreAdj, - }, - { - Name: "multi_max_value", - OOMScoreAdj: []*int{&minOOMScoreAdj, &maxOOMScoreAdj, &highOOMScoreAdj}, - // The lowest value excluding the root container is expected. - Expected: &highOOMScoreAdj, - }, - { - Name: "remove_adjusted", - OOMScoreAdj: []*int{&minOOMScoreAdj, &maxOOMScoreAdj, &highOOMScoreAdj}, - // The lowest value excluding the root container is expected. - Expected: &highOOMScoreAdj, - // Remove highOOMScoreAdj container. - Remove: []int{2}, - ExpectedAfterRemove: &maxOOMScoreAdj, - }, - { - // This test removes all non-root sandboxes with a specified oomScoreAdj. - Name: "remove_to_nil", - OOMScoreAdj: []*int{&minOOMScoreAdj, nil, &lowOOMScoreAdj}, - Expected: &lowOOMScoreAdj, - // Remove lowOOMScoreAdj container. - Remove: []int{2}, - // The oom_score_adj expected after remove is that of the parent process. - ExpectedAfterRemove: &parentOOMScoreAdj, - }, - { - Name: "remove_no_effect", - OOMScoreAdj: []*int{&minOOMScoreAdj, &maxOOMScoreAdj, &highOOMScoreAdj}, - // The lowest value excluding the root container is expected. - Expected: &highOOMScoreAdj, - // Remove the maxOOMScoreAdj container. - Remove: []int{1}, - ExpectedAfterRemove: &highOOMScoreAdj, - }, - } - - for _, testCase := range testCases { - t.Run(testCase.Name, func(t *testing.T) { - var cmds [][]string - var oomScoreAdj []*int - var toRemove []string - - for _, oomScore := range testCase.OOMScoreAdj { - oomScoreAdj = append(oomScoreAdj, oomScore) - cmds = append(cmds, []string{"sleep", "100"}) - } - - specs, ids := createSpecs(cmds...) - for i, spec := range specs { - // Ensure the correct value is set, including no value. - spec.Process.OOMScoreAdj = oomScoreAdj[i] - - for _, j := range testCase.Remove { - if i == j { - toRemove = append(toRemove, ids[i]) - } - } - } - - containers, cleanup, err := startContainers(conf, specs, ids) - if err != nil { - t.Fatalf("error starting containers: %v", err) - } - defer cleanup() - - for i, c := range containers { - if oomScoreAdj[i] != nil { - // Verify the gofer's oom_score_adj - score, err := specutils.GetOOMScoreAdj(c.GoferPid) - if err != nil { - t.Fatalf("error reading gofer oom_score_adj: %v", err) - } - if score != *oomScoreAdj[i] { - t.Errorf("gofer oom_score_adj got: %d, want: %d", score, *oomScoreAdj[i]) - } - } - } - - // Verify the sandbox's oom_score_adj. - // - // The sandbox should be the same for all containers so just use - // the first one. - sandboxPid := containers[0].Sandbox.Pid - if testCase.Expected != nil { - score, err := specutils.GetOOMScoreAdj(sandboxPid) - if err != nil { - t.Fatalf("error reading sandbox oom_score_adj: %v", err) - } - if score != *testCase.Expected { - t.Errorf("sandbox oom_score_adj got: %d, want: %d", score, *testCase.Expected) - } - } - - if len(toRemove) == 0 { - return - } - - // Remove containers. - for _, removeID := range toRemove { - for _, c := range containers { - if c.ID == removeID { - c.Destroy() - } - } - } - - // Check the new adjusted oom_score_adj. - if testCase.ExpectedAfterRemove != nil { - scoreAfterRemove, err := specutils.GetOOMScoreAdj(sandboxPid) - if err != nil { - t.Fatalf("error reading sandbox oom_score_adj: %v", err) - } - if scoreAfterRemove != *testCase.ExpectedAfterRemove { - t.Errorf("sandbox oom_score_adj got: %d, want: %d", scoreAfterRemove, *testCase.ExpectedAfterRemove) - } - } - }) - } -} - -func createSpecs(cmds ...[]string) ([]*specs.Spec, []string) { - var specs []*specs.Spec - var ids []string - rootID := testutil.UniqueContainerID() - - for i, cmd := range cmds { - spec := testutil.NewSpecWithArgs(cmd...) - if i == 0 { - spec.Annotations = map[string]string{ - specutils.ContainerdContainerTypeAnnotation: specutils.ContainerdContainerTypeSandbox, - } - ids = append(ids, rootID) - } else { - spec.Annotations = map[string]string{ - specutils.ContainerdContainerTypeAnnotation: specutils.ContainerdContainerTypeContainer, - specutils.ContainerdSandboxIDAnnotation: rootID, - } - ids = append(ids, testutil.UniqueContainerID()) - } - specs = append(specs, spec) - } - return specs, ids -} - -func startContainers(conf *boot.Config, specs []*specs.Spec, ids []string) ([]*container.Container, func(), error) { - if len(conf.RootDir) == 0 { - panic("conf.RootDir not set. Call testutil.SetupRootDir() to set.") - } - - var containers []*container.Container - var bundles []string - cleanup := func() { - for _, c := range containers { - c.Destroy() - } - for _, b := range bundles { - os.RemoveAll(b) - } - } - for i, spec := range specs { - bundleDir, err := testutil.SetupBundleDir(spec) - if err != nil { - cleanup() - return nil, nil, fmt.Errorf("error setting up container: %v", err) - } - bundles = append(bundles, bundleDir) - - args := container.Args{ - ID: ids[i], - Spec: spec, - BundleDir: bundleDir, - } - cont, err := container.New(conf, args) - if err != nil { - cleanup() - return nil, nil, fmt.Errorf("error creating container: %v", err) - } - containers = append(containers, cont) - - if err := cont.Start(conf); err != nil { - cleanup() - return nil, nil, fmt.Errorf("error starting container: %v", err) - } - } - return containers, cleanup, nil -} diff --git a/test/root/root.go b/test/root/root.go deleted file mode 100644 index 0f1d29faf..000000000 --- a/test/root/root.go +++ /dev/null @@ -1,21 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// Package root is used for tests that requires sysadmin privileges run. First, -// follow the setup instruction in runsc/test/README.md. You should also have -// docker, containerd, and crictl installed. To run these tests from the -// project root directory: -// -// ./scripts/root_tests.sh -package root diff --git a/test/root/testdata/BUILD b/test/root/testdata/BUILD deleted file mode 100644 index 6859541ad..000000000 --- a/test/root/testdata/BUILD +++ /dev/null @@ -1,18 +0,0 @@ -load("//tools:defs.bzl", "go_library") - -package(licenses = ["notice"]) - -go_library( - name = "testdata", - srcs = [ - "busybox.go", - "containerd_config.go", - "httpd.go", - "httpd_mount_paths.go", - "sandbox.go", - "simple.go", - ], - visibility = [ - "//:sandbox", - ], -) diff --git a/test/root/testdata/busybox.go b/test/root/testdata/busybox.go deleted file mode 100644 index e4dbd2843..000000000 --- a/test/root/testdata/busybox.go +++ /dev/null @@ -1,32 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package testdata - -// MountOverSymlink is a JSON config for a container that /etc/resolv.conf is a -// symlink to /tmp/resolv.conf. -var MountOverSymlink = ` -{ - "metadata": { - "name": "busybox" - }, - "image": { - "image": "k8s.gcr.io/busybox" - }, - "command": [ - "sleep", - "1000" - ] -} -` diff --git a/test/root/testdata/containerd_config.go b/test/root/testdata/containerd_config.go deleted file mode 100644 index e12f1ec88..000000000 --- a/test/root/testdata/containerd_config.go +++ /dev/null @@ -1,39 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// Package testdata contains data required for root tests. -package testdata - -import "fmt" - -// containerdConfigTemplate is a .toml config for containerd. It contains a -// formatting verb so the runtime field can be set via fmt.Sprintf. -const containerdConfigTemplate = ` -disabled_plugins = ["restart"] -[plugins.linux] - runtime = "%s" - runtime_root = "/tmp/test-containerd/runsc" - shim = "/usr/local/bin/gvisor-containerd-shim" - shim_debug = true - -[plugins.cri.containerd.runtimes.runsc] - runtime_type = "io.containerd.runtime.v1.linux" - runtime_engine = "%s" -` - -// ContainerdConfig returns a containerd config file with the specified -// runtime. -func ContainerdConfig(runtime string) string { - return fmt.Sprintf(containerdConfigTemplate, runtime, runtime) -} diff --git a/test/root/testdata/httpd.go b/test/root/testdata/httpd.go deleted file mode 100644 index 45d5e33d4..000000000 --- a/test/root/testdata/httpd.go +++ /dev/null @@ -1,32 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package testdata - -// Httpd is a JSON config for an httpd container. -const Httpd = ` -{ - "metadata": { - "name": "httpd" - }, - "image":{ - "image": "httpd" - }, - "mounts": [ - ], - "linux": { - }, - "log_path": "httpd.log" -} -` diff --git a/test/root/testdata/httpd_mount_paths.go b/test/root/testdata/httpd_mount_paths.go deleted file mode 100644 index ac3f4446a..000000000 --- a/test/root/testdata/httpd_mount_paths.go +++ /dev/null @@ -1,53 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package testdata - -// HttpdMountPaths is a JSON config for an httpd container with additional -// mounts. -const HttpdMountPaths = ` -{ - "metadata": { - "name": "httpd" - }, - "image":{ - "image": "httpd" - }, - "mounts": [ - { - "container_path": "/var/run/secrets/kubernetes.io/serviceaccount", - "host_path": "/var/lib/kubelet/pods/82bae206-cdf5-11e8-b245-8cdcd43ac064/volumes/kubernetes.io~secret/default-token-2rpfx", - "readonly": true - }, - { - "container_path": "/etc/hosts", - "host_path": "/var/lib/kubelet/pods/82bae206-cdf5-11e8-b245-8cdcd43ac064/etc-hosts", - "readonly": false - }, - { - "container_path": "/dev/termination-log", - "host_path": "/var/lib/kubelet/pods/82bae206-cdf5-11e8-b245-8cdcd43ac064/containers/httpd/d1709580", - "readonly": false - }, - { - "container_path": "/usr/local/apache2/htdocs/test", - "host_path": "/var/lib/kubelet/pods/82bae206-cdf5-11e8-b245-8cdcd43ac064", - "readonly": true - } - ], - "linux": { - }, - "log_path": "httpd.log" -} -` diff --git a/test/root/testdata/sandbox.go b/test/root/testdata/sandbox.go deleted file mode 100644 index 0db210370..000000000 --- a/test/root/testdata/sandbox.go +++ /dev/null @@ -1,30 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package testdata - -// Sandbox is a default JSON config for a sandbox. -const Sandbox = ` -{ - "metadata": { - "name": "default-sandbox", - "namespace": "default", - "attempt": 1, - "uid": "hdishd83djaidwnduwk28bcsb" - }, - "linux": { - }, - "log_directory": "/tmp" -} -` diff --git a/test/root/testdata/simple.go b/test/root/testdata/simple.go deleted file mode 100644 index 1cca53f0c..000000000 --- a/test/root/testdata/simple.go +++ /dev/null @@ -1,41 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package testdata - -import ( - "encoding/json" - "fmt" -) - -// SimpleSpec returns a JSON config for a simple container that runs the -// specified command in the specified image. -func SimpleSpec(name, image string, cmd []string) string { - cmds, err := json.Marshal(cmd) - if err != nil { - // This shouldn't happen. - panic(err) - } - return fmt.Sprintf(` -{ - "metadata": { - "name": %q - }, - "image": { - "image": %q - }, - "command": %s - } -`, name, image, cmds) -} diff --git a/test/runtimes/BUILD b/test/runtimes/BUILD deleted file mode 100644 index 2c472bf8d..000000000 --- a/test/runtimes/BUILD +++ /dev/null @@ -1,53 +0,0 @@ -# These packages are used to run language runtime tests inside gVisor sandboxes. - -load("//tools:defs.bzl", "go_binary", "go_test") -load("//test/runtimes:build_defs.bzl", "runtime_test") - -package(licenses = ["notice"]) - -go_binary( - name = "runner", - testonly = 1, - srcs = ["runner.go"], - deps = [ - "//runsc/dockerutil", - "//runsc/testutil", - ], -) - -runtime_test( - name = "go1.12", - blacklist_file = "blacklist_go1.12.csv", - lang = "go", -) - -runtime_test( - name = "java11", - blacklist_file = "blacklist_java11.csv", - lang = "java", -) - -runtime_test( - name = "nodejs12.4.0", - blacklist_file = "blacklist_nodejs12.4.0.csv", - lang = "nodejs", -) - -runtime_test( - name = "php7.3.6", - blacklist_file = "blacklist_php7.3.6.csv", - lang = "php", -) - -runtime_test( - name = "python3.7.3", - blacklist_file = "blacklist_python3.7.3.csv", - lang = "python", -) - -go_test( - name = "blacklist_test", - size = "small", - srcs = ["blacklist_test.go"], - library = ":runner", -) diff --git a/test/runtimes/README.md b/test/runtimes/README.md deleted file mode 100644 index e41e78f77..000000000 --- a/test/runtimes/README.md +++ /dev/null @@ -1,41 +0,0 @@ -# Runtimes Tests Dockerfiles - -The Dockerfiles defined under this path are configured to host the execution of -the runtimes language tests. Each Dockerfile can support the language indicated -by its directory. - -The following runtimes are currently supported: - -- Go 1.12 -- Java 11 -- Node.js 12 -- PHP 7.3 -- Python 3.7 - -#### Prerequisites: - -1) [Install and configure Docker](https://docs.docker.com/install/) - -2) Build each Docker container from the runtimes/images directory: - -```bash -$ cd images -$ docker build -f Dockerfile_$LANG [-t $NAME] . -``` - -### Testing: - -If the prerequisites have been fulfilled, you can run the tests with the -following command: - -```bash -$ docker run --rm -it $NAME [FLAG] -``` - -Running the command with no flags will cause all the available tests to execute. - -Flags can be added for additional functionality: - -- --list: Print a list of all available tests -- --test <name>: Run a single test from the list of available tests -- --v: Print the language version diff --git a/test/runtimes/blacklist_go1.12.csv b/test/runtimes/blacklist_go1.12.csv deleted file mode 100644 index 8c8ae0c5d..000000000 --- a/test/runtimes/blacklist_go1.12.csv +++ /dev/null @@ -1,16 +0,0 @@ -test name,bug id,comment -cgo_errors,,FLAKY -cgo_test,,FLAKY -go_test:cmd/go,,FLAKY -go_test:cmd/vendor/golang.org/x/sys/unix,b/118783622,/dev devices missing -go_test:net,b/118784196,socket: invalid argument. Works as intended: see bug. -go_test:os,b/118780122,we have a pollable filesystem but that's a surprise -go_test:os/signal,b/118780860,/dev/pts not properly supported -go_test:runtime,b/118782341,sigtrap not reported or caught or something -go_test:syscall,b/118781998,bad bytes -- bad mem addr -race,b/118782931,thread sanitizer. Works as intended: b/62219744. -runtime:cpu124,b/118778254,segmentation fault -test:0_1,,FLAKY -testasan,, -testcarchive,b/118782924,no sigpipe -testshared,,FLAKY diff --git a/test/runtimes/blacklist_java11.csv b/test/runtimes/blacklist_java11.csv deleted file mode 100644 index c012e5a56..000000000 --- a/test/runtimes/blacklist_java11.csv +++ /dev/null @@ -1,126 +0,0 @@ -test name,bug id,comment -com/sun/crypto/provider/Cipher/PBE/PKCS12Cipher.java,,Fails in Docker -com/sun/jdi/NashornPopFrameTest.java,, -com/sun/jdi/ProcessAttachTest.java,, -com/sun/management/HotSpotDiagnosticMXBean/CheckOrigin.java,,Fails in Docker -com/sun/management/OperatingSystemMXBean/GetCommittedVirtualMemorySize.java,, -com/sun/management/UnixOperatingSystemMXBean/GetMaxFileDescriptorCount.sh,, -com/sun/tools/attach/AttachSelf.java,, -com/sun/tools/attach/BasicTests.java,, -com/sun/tools/attach/PermissionTest.java,, -com/sun/tools/attach/StartManagementAgent.java,, -com/sun/tools/attach/TempDirTest.java,, -com/sun/tools/attach/modules/Driver.java,, -java/lang/Character/CheckScript.java,,Fails in Docker -java/lang/Character/CheckUnicode.java,,Fails in Docker -java/lang/Class/GetPackageBootLoaderChildLayer.java,, -java/lang/ClassLoader/nativeLibrary/NativeLibraryTest.java,,Fails in Docker -java/lang/String/nativeEncoding/StringPlatformChars.java,, -java/net/DatagramSocket/ReuseAddressTest.java,, -java/net/DatagramSocket/SendDatagramToBadAddress.java,b/78473345, -java/net/Inet4Address/PingThis.java,, -java/net/InterfaceAddress/NetworkPrefixLength.java,b/78507103, -java/net/MulticastSocket/MulticastTTL.java,, -java/net/MulticastSocket/Promiscuous.java,, -java/net/MulticastSocket/SetLoopbackMode.java,, -java/net/MulticastSocket/SetTTLAndGetTTL.java,, -java/net/MulticastSocket/Test.java,, -java/net/MulticastSocket/TestDefaults.java,, -java/net/MulticastSocket/TimeToLive.java,, -java/net/NetworkInterface/NetworkInterfaceStreamTest.java,, -java/net/Socket/SetSoLinger.java,b/78527327,SO_LINGER is not yet supported -java/net/Socket/TrafficClass.java,b/78527818,Not supported on gVisor -java/net/Socket/UrgentDataTest.java,b/111515323, -java/net/Socket/setReuseAddress/Basic.java,b/78519214,SO_REUSEADDR enabled by default -java/net/SocketOption/OptionsTest.java,,Fails in Docker -java/net/SocketOption/TcpKeepAliveTest.java,, -java/net/SocketPermission/SocketPermissionTest.java,, -java/net/URLConnection/6212146/TestDriver.java,,Fails in Docker -java/net/httpclient/RequestBuilderTest.java,,Fails in Docker -java/net/httpclient/ShortResponseBody.java,, -java/net/httpclient/ShortResponseBodyWithRetry.java,, -java/nio/channels/AsyncCloseAndInterrupt.java,, -java/nio/channels/AsynchronousServerSocketChannel/Basic.java,, -java/nio/channels/AsynchronousSocketChannel/Basic.java,b/77921528,SO_KEEPALIVE is not settable -java/nio/channels/DatagramChannel/BasicMulticastTests.java,, -java/nio/channels/DatagramChannel/SocketOptionTests.java,,Fails in Docker -java/nio/channels/DatagramChannel/UseDGWithIPv6.java,, -java/nio/channels/FileChannel/directio/DirectIOTest.java,,Fails in Docker -java/nio/channels/Selector/OutOfBand.java,, -java/nio/channels/Selector/SelectWithConsumer.java,,Flaky -java/nio/channels/ServerSocketChannel/SocketOptionTests.java,, -java/nio/channels/SocketChannel/LingerOnClose.java,, -java/nio/channels/SocketChannel/SocketOptionTests.java,b/77965901, -java/nio/channels/spi/SelectorProvider/inheritedChannel/InheritedChannelTest.java,,Fails in Docker -java/rmi/activation/Activatable/extLoadedImpl/ext.sh,, -java/rmi/transport/checkLeaseInfoLeak/CheckLeaseLeak.java,, -java/text/Format/NumberFormat/CurrencyFormat.java,,Fails in Docker -java/text/Format/NumberFormat/CurrencyFormat.java,,Fails in Docker -java/util/Calendar/JapaneseEraNameTest.java,, -java/util/Currency/CurrencyTest.java,,Fails in Docker -java/util/Currency/ValidateISO4217.java,,Fails in Docker -java/util/Locale/LSRDataTest.java,, -java/util/concurrent/locks/Lock/TimedAcquireLeak.java,, -java/util/jar/JarFile/mrjar/MultiReleaseJarAPI.java,,Fails in Docker -java/util/logging/LogManager/Configuration/updateConfiguration/SimpleUpdateConfigWithInputStreamTest.java,, -java/util/logging/TestLoggerWeakRefLeak.java,, -javax/imageio/AppletResourceTest.java,, -javax/management/security/HashedPasswordFileTest.java,, -javax/net/ssl/SSLSession/JSSERenegotiate.java,,Fails in Docker -javax/sound/sampled/AudioInputStream/FrameLengthAfterConversion.java,, -jdk/jfr/event/runtime/TestNetworkUtilizationEvent.java,, -jdk/jfr/event/runtime/TestThreadParkEvent.java,, -jdk/jfr/event/sampling/TestNative.java,, -jdk/jfr/jcmd/TestJcmdChangeLogLevel.java,, -jdk/jfr/jcmd/TestJcmdConfigure.java,, -jdk/jfr/jcmd/TestJcmdDump.java,, -jdk/jfr/jcmd/TestJcmdDumpGeneratedFilename.java,, -jdk/jfr/jcmd/TestJcmdDumpLimited.java,, -jdk/jfr/jcmd/TestJcmdDumpPathToGCRoots.java,, -jdk/jfr/jcmd/TestJcmdLegacy.java,, -jdk/jfr/jcmd/TestJcmdSaveToFile.java,, -jdk/jfr/jcmd/TestJcmdStartDirNotExist.java,, -jdk/jfr/jcmd/TestJcmdStartInvaldFile.java,, -jdk/jfr/jcmd/TestJcmdStartPathToGCRoots.java,, -jdk/jfr/jcmd/TestJcmdStartStopDefault.java,, -jdk/jfr/jcmd/TestJcmdStartWithOptions.java,, -jdk/jfr/jcmd/TestJcmdStartWithSettings.java,, -jdk/jfr/jcmd/TestJcmdStopInvalidFile.java,, -jdk/jfr/jvm/TestJfrJavaBase.java,, -jdk/jfr/startupargs/TestStartRecording.java,, -jdk/modules/incubator/ImageModules.java,, -jdk/net/Sockets/ExtOptionTest.java,, -jdk/net/Sockets/QuickAckTest.java,, -lib/security/cacerts/VerifyCACerts.java,, -sun/management/jmxremote/bootstrap/CustomLauncherTest.java,, -sun/management/jmxremote/bootstrap/JvmstatCountersTest.java,, -sun/management/jmxremote/bootstrap/LocalManagementTest.java,, -sun/management/jmxremote/bootstrap/RmiRegistrySslTest.java,, -sun/management/jmxremote/bootstrap/RmiSslBootstrapTest.sh,, -sun/management/jmxremote/startstop/JMXStartStopTest.java,, -sun/management/jmxremote/startstop/JMXStatusPerfCountersTest.java,, -sun/management/jmxremote/startstop/JMXStatusTest.java,, -sun/text/resources/LocaleDataTest.java,, -sun/tools/jcmd/TestJcmdSanity.java,, -sun/tools/jhsdb/AlternateHashingTest.java,, -sun/tools/jhsdb/BasicLauncherTest.java,, -sun/tools/jhsdb/HeapDumpTest.java,, -sun/tools/jhsdb/heapconfig/JMapHeapConfigTest.java,, -sun/tools/jinfo/BasicJInfoTest.java,, -sun/tools/jinfo/JInfoTest.java,, -sun/tools/jmap/BasicJMapTest.java,, -sun/tools/jstack/BasicJStackTest.java,, -sun/tools/jstack/DeadlockDetectionTest.java,, -sun/tools/jstatd/TestJstatdExternalRegistry.java,, -sun/tools/jstatd/TestJstatdPort.java,,Flaky -sun/tools/jstatd/TestJstatdPortAndServer.java,,Flaky -sun/util/calendar/zi/TestZoneInfo310.java,, -tools/jar/modularJar/Basic.java,, -tools/jar/multiRelease/Basic.java,, -tools/jimage/JImageExtractTest.java,, -tools/jimage/JImageTest.java,, -tools/jlink/JLinkTest.java,, -tools/jlink/plugins/IncludeLocalesPluginTest.java,, -tools/jmod/hashes/HashesTest.java,, -tools/launcher/BigJar.java,b/111611473, -tools/launcher/modules/patch/systemmodules/PatchSystemModules.java,, diff --git a/test/runtimes/blacklist_nodejs12.4.0.csv b/test/runtimes/blacklist_nodejs12.4.0.csv deleted file mode 100644 index 4ab4e2927..000000000 --- a/test/runtimes/blacklist_nodejs12.4.0.csv +++ /dev/null @@ -1,47 +0,0 @@ -test name,bug id,comment -benchmark/test-benchmark-fs.js,, -benchmark/test-benchmark-module.js,, -benchmark/test-benchmark-napi.js,, -doctool/test-make-doc.js,b/68848110,Expected to fail. -fixtures/test-error-first-line-offset.js,, -fixtures/test-fs-readfile-error.js,, -fixtures/test-fs-stat-sync-overflow.js,, -internet/test-dgram-broadcast-multi-process.js,, -internet/test-dgram-multicast-multi-process.js,, -internet/test-dgram-multicast-set-interface-lo.js,, -parallel/test-cluster-dgram-reuse.js,b/64024294, -parallel/test-dgram-bind-fd.js,b/132447356, -parallel/test-dgram-create-socket-handle-fd.js,b/132447238, -parallel/test-dgram-createSocket-type.js,b/68847739, -parallel/test-dgram-socket-buffer-size.js,b/68847921, -parallel/test-fs-access.js,, -parallel/test-fs-write-stream-double-close.js,, -parallel/test-fs-write-stream-throw-type-error.js,b/110226209, -parallel/test-fs-write-stream.js,, -parallel/test-http2-respond-file-error-pipe-offset.js,, -parallel/test-os.js,, -parallel/test-process-uid-gid.js,, -pseudo-tty/test-assert-colors.js,, -pseudo-tty/test-assert-no-color.js,, -pseudo-tty/test-assert-position-indicator.js,, -pseudo-tty/test-async-wrap-getasyncid-tty.js,, -pseudo-tty/test-fatal-error.js,, -pseudo-tty/test-handle-wrap-isrefed-tty.js,, -pseudo-tty/test-readable-tty-keepalive.js,, -pseudo-tty/test-set-raw-mode-reset-process-exit.js,, -pseudo-tty/test-set-raw-mode-reset-signal.js,, -pseudo-tty/test-set-raw-mode-reset.js,, -pseudo-tty/test-stderr-stdout-handle-sigwinch.js,, -pseudo-tty/test-stdout-read.js,, -pseudo-tty/test-tty-color-support.js,, -pseudo-tty/test-tty-isatty.js,, -pseudo-tty/test-tty-stdin-call-end.js,, -pseudo-tty/test-tty-stdin-end.js,, -pseudo-tty/test-stdin-write.js,, -pseudo-tty/test-tty-stdout-end.js,, -pseudo-tty/test-tty-stdout-resize.js,, -pseudo-tty/test-tty-stream-constructors.js,, -pseudo-tty/test-tty-window-size.js,, -pseudo-tty/test-tty-wrap.js,, -pummel/test-net-pingpong.js,, -pummel/test-vm-memleak.js,, diff --git a/test/runtimes/blacklist_php7.3.6.csv b/test/runtimes/blacklist_php7.3.6.csv deleted file mode 100644 index 456bf7487..000000000 --- a/test/runtimes/blacklist_php7.3.6.csv +++ /dev/null @@ -1,29 +0,0 @@ -test name,bug id,comment -ext/intl/tests/bug77895.phpt,, -ext/intl/tests/dateformat_bug65683_2.phpt,, -ext/mbstring/tests/bug76319.phpt,, -ext/mbstring/tests/bug76958.phpt,, -ext/mbstring/tests/bug77025.phpt,, -ext/mbstring/tests/bug77165.phpt,, -ext/mbstring/tests/bug77454.phpt,, -ext/mbstring/tests/mb_convert_encoding_leak.phpt,, -ext/mbstring/tests/mb_strrpos_encoding_3rd_param.phpt,, -ext/standard/tests/file/filetype_variation.phpt,, -ext/standard/tests/file/fopen_variation19.phpt,, -ext/standard/tests/file/php_fd_wrapper_01.phpt,, -ext/standard/tests/file/php_fd_wrapper_02.phpt,, -ext/standard/tests/file/php_fd_wrapper_03.phpt,, -ext/standard/tests/file/php_fd_wrapper_04.phpt,, -ext/standard/tests/file/realpath_bug77484.phpt,, -ext/standard/tests/file/rename_variation.phpt,b/68717309, -ext/standard/tests/file/symlink_link_linkinfo_is_link_variation4.phpt,, -ext/standard/tests/file/symlink_link_linkinfo_is_link_variation8.phpt,, -ext/standard/tests/general_functions/escapeshellarg_bug71270.phpt,, -ext/standard/tests/general_functions/escapeshellcmd_bug71270.phpt,, -ext/standard/tests/network/bug20134.phpt,, -tests/output/stream_isatty_err.phpt,b/68720279, -tests/output/stream_isatty_in-err.phpt,b/68720282, -tests/output/stream_isatty_in-out-err.phpt,, -tests/output/stream_isatty_in-out.phpt,b/68720299, -tests/output/stream_isatty_out-err.phpt,b/68720311, -tests/output/stream_isatty_out.phpt,b/68720325, diff --git a/test/runtimes/blacklist_python3.7.3.csv b/test/runtimes/blacklist_python3.7.3.csv deleted file mode 100644 index 2b9947212..000000000 --- a/test/runtimes/blacklist_python3.7.3.csv +++ /dev/null @@ -1,27 +0,0 @@ -test name,bug id,comment -test_asynchat,b/76031995,SO_REUSEADDR -test_asyncio,,Fails on Docker. -test_asyncore,b/76031995,SO_REUSEADDR -test_epoll,, -test_fcntl,,fcntl invalid argument -- artificial test to make sure something works in 64 bit mode. -test_ftplib,,Fails in Docker -test_httplib,b/76031995,SO_REUSEADDR -test_imaplib,, -test_logging,, -test_multiprocessing_fork,,Flaky. Sometimes times out. -test_multiprocessing_forkserver,,Flaky. Sometimes times out. -test_multiprocessing_main_handling,,Flaky. Sometimes times out. -test_multiprocessing_spawn,,Flaky. Sometimes times out. -test_nntplib,b/76031995,tests should not set SO_REUSEADDR -test_poplib,,Fails on Docker -test_posix,b/76174079,posix.sched_get_priority_min not implemented + posix.sched_rr_get_interval not permitted -test_pty,b/76157709,out of pty devices -test_readline,b/76157709,out of pty devices -test_resource,b/76174079, -test_selectors,b/76116849,OSError not raised with epoll -test_smtplib,b/76031995,SO_REUSEADDR and unclosed sockets -test_socket,b/75983380, -test_ssl,b/76031995,SO_REUSEADDR -test_subprocess,, -test_support,b/76031995,SO_REUSEADDR -test_telnetlib,b/76031995,SO_REUSEADDR diff --git a/test/runtimes/blacklist_test.go b/test/runtimes/blacklist_test.go deleted file mode 100644 index 52f49b984..000000000 --- a/test/runtimes/blacklist_test.go +++ /dev/null @@ -1,37 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package main - -import ( - "flag" - "os" - "testing" -) - -func TestMain(m *testing.M) { - flag.Parse() - os.Exit(m.Run()) -} - -// Test that the blacklist parses without error. -func TestBlacklists(t *testing.T) { - bl, err := getBlacklist() - if err != nil { - t.Fatalf("error parsing blacklist: %v", err) - } - if *blacklistFile != "" && len(bl) == 0 { - t.Errorf("got empty blacklist for file %q", blacklistFile) - } -} diff --git a/test/runtimes/build_defs.bzl b/test/runtimes/build_defs.bzl deleted file mode 100644 index 92e275a76..000000000 --- a/test/runtimes/build_defs.bzl +++ /dev/null @@ -1,75 +0,0 @@ -"""Defines a rule for runtime test targets.""" - -load("//tools:defs.bzl", "go_test", "loopback") - -def runtime_test( - name, - lang, - image_repo = "gcr.io/gvisor-presubmit", - image_name = None, - blacklist_file = None, - shard_count = 50, - size = "enormous"): - """Generates sh_test and blacklist test targets for a given runtime. - - Args: - name: The name of the runtime being tested. Typically, the lang + version. - This is used in the names of the generated test targets. - lang: The language being tested. - image_repo: The docker repository containing the proctor image to run. - i.e., the prefix to the fully qualified docker image id. - image_name: The name of the image in the image_repo. - Defaults to the test name. - blacklist_file: A test blacklist to pass to the runtime test's runner. - shard_count: See Bazel common test attributes. - size: See Bazel common test attributes. - """ - if image_name == None: - image_name = name - args = [ - "--lang", - lang, - "--image", - "/".join([image_repo, image_name]), - ] - data = [ - ":runner", - loopback, - ] - if blacklist_file: - args += ["--blacklist_file", "test/runtimes/" + blacklist_file] - data += [blacklist_file] - - # Add a test that the blacklist parses correctly. - blacklist_test(name, blacklist_file) - - sh_test( - name = name + "_test", - srcs = ["runner.sh"], - args = args, - data = data, - size = size, - shard_count = shard_count, - tags = [ - # Requires docker and runsc to be configured before the test runs. - "local", - # Don't include test target in wildcard target patterns. - "manual", - ], - ) - -def blacklist_test(name, blacklist_file): - """Test that a blacklist parses correctly.""" - go_test( - name = name + "_blacklist_test", - library = ":runner", - srcs = ["blacklist_test.go"], - args = ["--blacklist_file", "test/runtimes/" + blacklist_file], - data = [blacklist_file], - ) - -def sh_test(**kwargs): - """Wraps the standard sh_test.""" - native.sh_test( - **kwargs - ) diff --git a/test/runtimes/images/Dockerfile_go1.12 b/test/runtimes/images/Dockerfile_go1.12 deleted file mode 100644 index ab9d6abf3..000000000 --- a/test/runtimes/images/Dockerfile_go1.12 +++ /dev/null @@ -1,10 +0,0 @@ -# Go is easy, since we already have everything we need to compile the proctor -# binary and run the tests in the golang Docker image. -FROM golang:1.12 -ADD ["proctor/", "/go/src/proctor/"] -RUN ["go", "build", "-o", "/proctor", "/go/src/proctor"] - -# Pre-compile the tests so we don't need to do so in each test run. -RUN ["go", "tool", "dist", "test", "-compile-only"] - -ENTRYPOINT ["/proctor", "--runtime=go"] diff --git a/test/runtimes/images/Dockerfile_java11 b/test/runtimes/images/Dockerfile_java11 deleted file mode 100644 index 9b7c3d5a3..000000000 --- a/test/runtimes/images/Dockerfile_java11 +++ /dev/null @@ -1,30 +0,0 @@ -# Compile the proctor binary. -FROM golang:1.12 AS golang -ADD ["proctor/", "/go/src/proctor/"] -RUN ["go", "build", "-o", "/proctor", "/go/src/proctor"] - -FROM ubuntu:bionic -RUN apt-get update && apt-get install -y \ - autoconf \ - build-essential \ - curl \ - make \ - openjdk-11-jdk \ - unzip \ - zip - -# Download the JDK test library. -WORKDIR /root -RUN set -ex \ - && curl -fsSL --retry 10 -o /tmp/jdktests.tar.gz http://hg.openjdk.java.net/jdk/jdk11/archive/76072a077ee1.tar.gz/test \ - && tar -xzf /tmp/jdktests.tar.gz \ - && mv jdk11-76072a077ee1/test test \ - && rm -f /tmp/jdktests.tar.gz - -# Install jtreg and add to PATH. -RUN curl -o jtreg.tar.gz https://ci.adoptopenjdk.net/view/Dependencies/job/jtreg/lastSuccessfulBuild/artifact/jtreg-4.2.0-tip.tar.gz -RUN tar -xzf jtreg.tar.gz -ENV PATH="/root/jtreg/bin:$PATH" - -COPY --from=golang /proctor /proctor -ENTRYPOINT ["/proctor", "--runtime=java"] diff --git a/test/runtimes/images/Dockerfile_nodejs12.4.0 b/test/runtimes/images/Dockerfile_nodejs12.4.0 deleted file mode 100644 index 26f68b487..000000000 --- a/test/runtimes/images/Dockerfile_nodejs12.4.0 +++ /dev/null @@ -1,28 +0,0 @@ -# Compile the proctor binary. -FROM golang:1.12 AS golang -ADD ["proctor/", "/go/src/proctor/"] -RUN ["go", "build", "-o", "/proctor", "/go/src/proctor"] - -FROM ubuntu:bionic -RUN apt-get update && apt-get install -y \ - curl \ - dumb-init \ - g++ \ - make \ - python - -WORKDIR /root -ARG VERSION=v12.4.0 -RUN curl -o node-${VERSION}.tar.gz https://nodejs.org/dist/${VERSION}/node-${VERSION}.tar.gz -RUN tar -zxf node-${VERSION}.tar.gz - -WORKDIR /root/node-${VERSION} -RUN ./configure -RUN make -RUN make test-build - -COPY --from=golang /proctor /proctor - -# Including dumb-init emulates the Linux "init" process, preventing the failure -# of tests involving worker processes. -ENTRYPOINT ["/usr/bin/dumb-init", "/proctor", "--runtime=nodejs"] diff --git a/test/runtimes/images/Dockerfile_php7.3.6 b/test/runtimes/images/Dockerfile_php7.3.6 deleted file mode 100644 index e6b4c6329..000000000 --- a/test/runtimes/images/Dockerfile_php7.3.6 +++ /dev/null @@ -1,27 +0,0 @@ -# Compile the proctor binary. -FROM golang:1.12 AS golang -ADD ["proctor/", "/go/src/proctor/"] -RUN ["go", "build", "-o", "/proctor", "/go/src/proctor"] - -FROM ubuntu:bionic -RUN apt-get update && apt-get install -y \ - autoconf \ - automake \ - bison \ - build-essential \ - curl \ - libtool \ - libxml2-dev \ - re2c - -WORKDIR /root -ARG VERSION=7.3.6 -RUN curl -o php-${VERSION}.tar.gz https://www.php.net/distributions/php-${VERSION}.tar.gz -RUN tar -zxf php-${VERSION}.tar.gz - -WORKDIR /root/php-${VERSION} -RUN ./configure -RUN make - -COPY --from=golang /proctor /proctor -ENTRYPOINT ["/proctor", "--runtime=php"] diff --git a/test/runtimes/images/Dockerfile_python3.7.3 b/test/runtimes/images/Dockerfile_python3.7.3 deleted file mode 100644 index 905cd22d7..000000000 --- a/test/runtimes/images/Dockerfile_python3.7.3 +++ /dev/null @@ -1,30 +0,0 @@ -# Compile the proctor binary. -FROM golang:1.12 AS golang -ADD ["proctor/", "/go/src/proctor/"] -RUN ["go", "build", "-o", "/proctor", "/go/src/proctor"] - -FROM ubuntu:bionic - -RUN apt-get update && apt-get install -y \ - curl \ - gcc \ - libbz2-dev \ - libffi-dev \ - liblzma-dev \ - libreadline-dev \ - libssl-dev \ - make \ - zlib1g-dev - -# Use flags -LJO to follow the html redirect and download .tar.gz. -WORKDIR /root -ARG VERSION=3.7.3 -RUN curl -LJO https://github.com/python/cpython/archive/v${VERSION}.tar.gz -RUN tar -zxf cpython-${VERSION}.tar.gz - -WORKDIR /root/cpython-${VERSION} -RUN ./configure --with-pydebug -RUN make -s -j2 - -COPY --from=golang /proctor /proctor -ENTRYPOINT ["/proctor", "--runtime=python"] diff --git a/test/runtimes/images/proctor/BUILD b/test/runtimes/images/proctor/BUILD deleted file mode 100644 index 85e004c45..000000000 --- a/test/runtimes/images/proctor/BUILD +++ /dev/null @@ -1,26 +0,0 @@ -load("//tools:defs.bzl", "go_binary", "go_test") - -package(licenses = ["notice"]) - -go_binary( - name = "proctor", - srcs = [ - "go.go", - "java.go", - "nodejs.go", - "php.go", - "proctor.go", - "python.go", - ], - visibility = ["//test/runtimes/images:__subpackages__"], -) - -go_test( - name = "proctor_test", - size = "small", - srcs = ["proctor_test.go"], - library = ":proctor", - deps = [ - "//runsc/testutil", - ], -) diff --git a/test/runtimes/images/proctor/go.go b/test/runtimes/images/proctor/go.go deleted file mode 100644 index 3e2d5d8db..000000000 --- a/test/runtimes/images/proctor/go.go +++ /dev/null @@ -1,90 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package main - -import ( - "fmt" - "os" - "os/exec" - "regexp" - "strings" -) - -var ( - goTestRegEx = regexp.MustCompile(`^.+\.go$`) - - // Directories with .dir contain helper files for tests. - // Exclude benchmarks and stress tests. - goDirFilter = regexp.MustCompile(`^(bench|stress)\/.+$|^.+\.dir.+$`) -) - -// Location of Go tests on disk. -const goTestDir = "/usr/local/go/test" - -// goRunner implements TestRunner for Go. -// -// There are two types of Go tests: "Go tool tests" and "Go tests on disk". -// "Go tool tests" are found and executed using `go tool dist test`. "Go tests -// on disk" are found in the /usr/local/go/test directory and are executed -// using `go run run.go`. -type goRunner struct{} - -var _ TestRunner = goRunner{} - -// ListTests implements TestRunner.ListTests. -func (goRunner) ListTests() ([]string, error) { - // Go tool dist test tests. - args := []string{"tool", "dist", "test", "-list"} - cmd := exec.Command("go", args...) - cmd.Stderr = os.Stderr - out, err := cmd.Output() - if err != nil { - return nil, fmt.Errorf("failed to list: %v", err) - } - var toolSlice []string - for _, test := range strings.Split(string(out), "\n") { - toolSlice = append(toolSlice, test) - } - - // Go tests on disk. - diskSlice, err := search(goTestDir, goTestRegEx) - if err != nil { - return nil, err - } - // Remove items from /bench/, /stress/ and .dir files - diskFiltered := diskSlice[:0] - for _, file := range diskSlice { - if !goDirFilter.MatchString(file) { - diskFiltered = append(diskFiltered, file) - } - } - - return append(toolSlice, diskFiltered...), nil -} - -// TestCmd implements TestRunner.TestCmd. -func (goRunner) TestCmd(test string) *exec.Cmd { - // Check if test exists on disk by searching for file of the same name. - // This will determine whether or not it is a Go test on disk. - if strings.HasSuffix(test, ".go") { - // Test has suffix ".go" which indicates a disk test, run it as such. - cmd := exec.Command("go", "run", "run.go", "-v", "--", test) - cmd.Dir = goTestDir - return cmd - } - - // No ".go" suffix, run as a tool test. - return exec.Command("go", "tool", "dist", "test", "-run", test) -} diff --git a/test/runtimes/images/proctor/java.go b/test/runtimes/images/proctor/java.go deleted file mode 100644 index 8b362029d..000000000 --- a/test/runtimes/images/proctor/java.go +++ /dev/null @@ -1,71 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package main - -import ( - "fmt" - "os" - "os/exec" - "regexp" - "strings" -) - -// Directories to exclude from tests. -var javaExclDirs = regexp.MustCompile(`(^(sun\/security)|(java\/util\/stream)|(java\/time)| )`) - -// Location of java tests. -const javaTestDir = "/root/test/jdk" - -// javaRunner implements TestRunner for Java. -type javaRunner struct{} - -var _ TestRunner = javaRunner{} - -// ListTests implements TestRunner.ListTests. -func (javaRunner) ListTests() ([]string, error) { - args := []string{ - "-dir:" + javaTestDir, - "-ignore:quiet", - "-a", - "-listtests", - ":jdk_core", - ":jdk_svc", - ":jdk_sound", - ":jdk_imageio", - } - cmd := exec.Command("jtreg", args...) - cmd.Stderr = os.Stderr - out, err := cmd.Output() - if err != nil { - return nil, fmt.Errorf("jtreg -listtests : %v", err) - } - var testSlice []string - for _, test := range strings.Split(string(out), "\n") { - if !javaExclDirs.MatchString(test) { - testSlice = append(testSlice, test) - } - } - return testSlice, nil -} - -// TestCmd implements TestRunner.TestCmd. -func (javaRunner) TestCmd(test string) *exec.Cmd { - args := []string{ - "-noreport", - "-dir:" + javaTestDir, - test, - } - return exec.Command("jtreg", args...) -} diff --git a/test/runtimes/images/proctor/nodejs.go b/test/runtimes/images/proctor/nodejs.go deleted file mode 100644 index bd57db444..000000000 --- a/test/runtimes/images/proctor/nodejs.go +++ /dev/null @@ -1,46 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package main - -import ( - "os/exec" - "path/filepath" - "regexp" -) - -var nodejsTestRegEx = regexp.MustCompile(`^test-[^-].+\.js$`) - -// Location of nodejs tests relative to working dir. -const nodejsTestDir = "test" - -// nodejsRunner implements TestRunner for NodeJS. -type nodejsRunner struct{} - -var _ TestRunner = nodejsRunner{} - -// ListTests implements TestRunner.ListTests. -func (nodejsRunner) ListTests() ([]string, error) { - testSlice, err := search(nodejsTestDir, nodejsTestRegEx) - if err != nil { - return nil, err - } - return testSlice, nil -} - -// TestCmd implements TestRunner.TestCmd. -func (nodejsRunner) TestCmd(test string) *exec.Cmd { - args := []string{filepath.Join("tools", "test.py"), test} - return exec.Command("/usr/bin/python", args...) -} diff --git a/test/runtimes/images/proctor/php.go b/test/runtimes/images/proctor/php.go deleted file mode 100644 index 9115040e1..000000000 --- a/test/runtimes/images/proctor/php.go +++ /dev/null @@ -1,42 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package main - -import ( - "os/exec" - "regexp" -) - -var phpTestRegEx = regexp.MustCompile(`^.+\.phpt$`) - -// phpRunner implements TestRunner for PHP. -type phpRunner struct{} - -var _ TestRunner = phpRunner{} - -// ListTests implements TestRunner.ListTests. -func (phpRunner) ListTests() ([]string, error) { - testSlice, err := search(".", phpTestRegEx) - if err != nil { - return nil, err - } - return testSlice, nil -} - -// TestCmd implements TestRunner.TestCmd. -func (phpRunner) TestCmd(test string) *exec.Cmd { - args := []string{"test", "TESTS=" + test} - return exec.Command("make", args...) -} diff --git a/test/runtimes/images/proctor/proctor.go b/test/runtimes/images/proctor/proctor.go deleted file mode 100644 index b54abe434..000000000 --- a/test/runtimes/images/proctor/proctor.go +++ /dev/null @@ -1,163 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// Binary proctor runs the test for a particular runtime. It is meant to be -// included in Docker images for all runtime tests. -package main - -import ( - "flag" - "fmt" - "log" - "os" - "os/exec" - "os/signal" - "path/filepath" - "regexp" - "syscall" -) - -// TestRunner is an interface that must be implemented for each runtime -// integrated with proctor. -type TestRunner interface { - // ListTests returns a string slice of tests available to run. - ListTests() ([]string, error) - - // TestCmd returns an *exec.Cmd that will run the given test. - TestCmd(test string) *exec.Cmd -} - -var ( - runtime = flag.String("runtime", "", "name of runtime") - list = flag.Bool("list", false, "list all available tests") - testName = flag.String("test", "", "run a single test from the list of available tests") - pause = flag.Bool("pause", false, "cause container to pause indefinitely, reaping any zombie children") -) - -func main() { - flag.Parse() - - if *pause { - pauseAndReap() - panic("pauseAndReap should never return") - } - - if *runtime == "" { - log.Fatalf("runtime flag must be provided") - } - - tr, err := testRunnerForRuntime(*runtime) - if err != nil { - log.Fatalf("%v", err) - } - - // List tests. - if *list { - tests, err := tr.ListTests() - if err != nil { - log.Fatalf("failed to list tests: %v", err) - } - for _, test := range tests { - fmt.Println(test) - } - return - } - - var tests []string - if *testName == "" { - // Run every test. - tests, err = tr.ListTests() - if err != nil { - log.Fatalf("failed to get all tests: %v", err) - } - } else { - // Run a single test. - tests = []string{*testName} - } - for _, test := range tests { - cmd := tr.TestCmd(test) - cmd.Stdout, cmd.Stderr = os.Stdout, os.Stderr - if err := cmd.Run(); err != nil { - log.Fatalf("FAIL: %v", err) - } - } -} - -// testRunnerForRuntime returns a new TestRunner for the given runtime. -func testRunnerForRuntime(runtime string) (TestRunner, error) { - switch runtime { - case "go": - return goRunner{}, nil - case "java": - return javaRunner{}, nil - case "nodejs": - return nodejsRunner{}, nil - case "php": - return phpRunner{}, nil - case "python": - return pythonRunner{}, nil - } - return nil, fmt.Errorf("invalid runtime %q", runtime) -} - -// pauseAndReap is like init. It runs forever and reaps any children. -func pauseAndReap() { - // Get notified of any new children. - ch := make(chan os.Signal, 1) - signal.Notify(ch, syscall.SIGCHLD) - - for { - if _, ok := <-ch; !ok { - // Channel closed. This should not happen. - panic("signal channel closed") - } - - // Reap the child. - for { - if cpid, _ := syscall.Wait4(-1, nil, syscall.WNOHANG, nil); cpid < 1 { - break - } - } - } -} - -// search is a helper function to find tests in the given directory that match -// the regex. -func search(root string, testFilter *regexp.Regexp) ([]string, error) { - var testSlice []string - - err := filepath.Walk(root, func(path string, info os.FileInfo, err error) error { - if err != nil { - return err - } - - name := filepath.Base(path) - - if info.IsDir() || !testFilter.MatchString(name) { - return nil - } - - relPath, err := filepath.Rel(root, path) - if err != nil { - return err - } - testSlice = append(testSlice, relPath) - return nil - }) - if err != nil { - return nil, fmt.Errorf("walking %q: %v", root, err) - } - - return testSlice, nil -} diff --git a/test/runtimes/images/proctor/proctor_test.go b/test/runtimes/images/proctor/proctor_test.go deleted file mode 100644 index 6bb61d142..000000000 --- a/test/runtimes/images/proctor/proctor_test.go +++ /dev/null @@ -1,127 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package main - -import ( - "io/ioutil" - "os" - "path/filepath" - "reflect" - "regexp" - "strings" - "testing" - - "gvisor.dev/gvisor/runsc/testutil" -) - -func touch(t *testing.T, name string) { - t.Helper() - f, err := os.Create(name) - if err != nil { - t.Fatal(err) - } - if err := f.Close(); err != nil { - t.Fatal(err) - } -} - -func TestSearchEmptyDir(t *testing.T) { - td, err := ioutil.TempDir(testutil.TmpDir(), "searchtest") - if err != nil { - t.Fatal(err) - } - defer os.RemoveAll(td) - - var want []string - - testFilter := regexp.MustCompile(`^test-[^-].+\.tc$`) - got, err := search(td, testFilter) - if err != nil { - t.Errorf("search error: %v", err) - } - - if !reflect.DeepEqual(got, want) { - t.Errorf("Found %#v; want %#v", got, want) - } -} - -func TestSearch(t *testing.T) { - td, err := ioutil.TempDir(testutil.TmpDir(), "searchtest") - if err != nil { - t.Fatal(err) - } - defer os.RemoveAll(td) - - // Creating various files similar to the test filter regex. - files := []string{ - "emp/", - "tee/", - "test-foo.tc", - "test-foo.tc", - "test-bar.tc", - "test-sam.tc", - "Test-que.tc", - "test-brett", - "test--abc.tc", - "test---xyz.tc", - "test-bool.TC", - "--test-gvs.tc", - " test-pew.tc", - "dir/test_baz.tc", - "dir/testsnap.tc", - "dir/test-luk.tc", - "dir/nest/test-ok.tc", - "dir/dip/diz/goog/test-pack.tc", - "dir/dip/diz/wobble/thud/test-cas.e", - "dir/dip/diz/wobble/thud/test-cas.tc", - } - want := []string{ - "dir/dip/diz/goog/test-pack.tc", - "dir/dip/diz/wobble/thud/test-cas.tc", - "dir/nest/test-ok.tc", - "dir/test-luk.tc", - "test-bar.tc", - "test-foo.tc", - "test-sam.tc", - } - - for _, item := range files { - if strings.HasSuffix(item, "/") { - // This item is a directory, create it. - if err := os.MkdirAll(filepath.Join(td, item), 0755); err != nil { - t.Fatal(err) - } - } else { - // This item is a file, create the directory and touch file. - // Create directory in which file should be created - fullDirPath := filepath.Join(td, filepath.Dir(item)) - if err := os.MkdirAll(fullDirPath, 0755); err != nil { - t.Fatal(err) - } - // Create file with full path to file. - touch(t, filepath.Join(td, item)) - } - } - - testFilter := regexp.MustCompile(`^test-[^-].+\.tc$`) - got, err := search(td, testFilter) - if err != nil { - t.Errorf("search error: %v", err) - } - - if !reflect.DeepEqual(got, want) { - t.Errorf("Found %#v; want %#v", got, want) - } -} diff --git a/test/runtimes/images/proctor/python.go b/test/runtimes/images/proctor/python.go deleted file mode 100644 index b9e0fbe6f..000000000 --- a/test/runtimes/images/proctor/python.go +++ /dev/null @@ -1,49 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -package main - -import ( - "fmt" - "os" - "os/exec" - "strings" -) - -// pythonRunner implements TestRunner for Python. -type pythonRunner struct{} - -var _ TestRunner = pythonRunner{} - -// ListTests implements TestRunner.ListTests. -func (pythonRunner) ListTests() ([]string, error) { - args := []string{"-m", "test", "--list-tests"} - cmd := exec.Command("./python", args...) - cmd.Stderr = os.Stderr - out, err := cmd.Output() - if err != nil { - return nil, fmt.Errorf("failed to list: %v", err) - } - var toolSlice []string - for _, test := range strings.Split(string(out), "\n") { - toolSlice = append(toolSlice, test) - } - return toolSlice, nil -} - -// TestCmd implements TestRunner.TestCmd. -func (pythonRunner) TestCmd(test string) *exec.Cmd { - args := []string{"-m", "test", test} - return exec.Command("./python", args...) -} diff --git a/test/runtimes/runner.go b/test/runtimes/runner.go deleted file mode 100644 index ddb890dbc..000000000 --- a/test/runtimes/runner.go +++ /dev/null @@ -1,196 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// Binary runner runs the runtime tests in a Docker container. -package main - -import ( - "encoding/csv" - "flag" - "fmt" - "io" - "os" - "sort" - "strings" - "testing" - "time" - - "gvisor.dev/gvisor/runsc/dockerutil" - "gvisor.dev/gvisor/runsc/testutil" -) - -var ( - lang = flag.String("lang", "", "language runtime to test") - image = flag.String("image", "", "docker image with runtime tests") - blacklistFile = flag.String("blacklist_file", "", "file containing blacklist of tests to exclude, in CSV format with fields: test name, bug id, comment") -) - -// Wait time for each test to run. -const timeout = 5 * time.Minute - -func main() { - flag.Parse() - if *lang == "" || *image == "" { - fmt.Fprintf(os.Stderr, "lang and image flags must not be empty\n") - os.Exit(1) - } - - os.Exit(runTests()) -} - -// runTests is a helper that is called by main. It exists so that we can run -// defered functions before exiting. It returns an exit code that should be -// passed to os.Exit. -func runTests() int { - // Get tests to blacklist. - blacklist, err := getBlacklist() - if err != nil { - fmt.Fprintf(os.Stderr, "Error getting blacklist: %s\n", err.Error()) - return 1 - } - - // Create a single docker container that will be used for all tests. - d := dockerutil.MakeDocker("gvisor-" + *lang) - defer d.CleanUp() - - // Get a slice of tests to run. This will also start a single Docker - // container that will be used to run each test. The final test will - // stop the Docker container. - tests, err := getTests(d, blacklist) - if err != nil { - fmt.Fprintf(os.Stderr, "%s\n", err.Error()) - return 1 - } - - m := testing.MainStart(testDeps{}, tests, nil, nil) - return m.Run() -} - -// getTests returns a slice of tests to run, subject to the shard size and -// index. -func getTests(d dockerutil.Docker, blacklist map[string]struct{}) ([]testing.InternalTest, error) { - // Pull the image. - if err := dockerutil.Pull(*image); err != nil { - return nil, fmt.Errorf("docker pull %q failed: %v", *image, err) - } - - // Run proctor with --pause flag to keep container alive forever. - if err := d.Run(*image, "--pause"); err != nil { - return nil, fmt.Errorf("docker run failed: %v", err) - } - - // Get a list of all tests in the image. - list, err := d.Exec("/proctor", "--runtime", *lang, "--list") - if err != nil { - return nil, fmt.Errorf("docker exec failed: %v", err) - } - - // Calculate a subset of tests to run corresponding to the current - // shard. - tests := strings.Fields(list) - sort.Strings(tests) - indices, err := testutil.TestIndicesForShard(len(tests)) - if err != nil { - return nil, fmt.Errorf("TestsForShard() failed: %v", err) - } - - var itests []testing.InternalTest - for _, tci := range indices { - // Capture tc in this scope. - tc := tests[tci] - itests = append(itests, testing.InternalTest{ - Name: tc, - F: func(t *testing.T) { - // Is the test blacklisted? - if _, ok := blacklist[tc]; ok { - t.Skip("SKIP: blacklisted test %q", tc) - } - - var ( - now = time.Now() - done = make(chan struct{}) - output string - err error - ) - - go func() { - fmt.Printf("RUNNING %s...\n", tc) - output, err = d.Exec("/proctor", "--runtime", *lang, "--test", tc) - close(done) - }() - - select { - case <-done: - if err == nil { - fmt.Printf("PASS: %s (%v)\n\n", tc, time.Since(now)) - return - } - t.Errorf("FAIL: %s (%v):\n%s\n", tc, time.Since(now), output) - case <-time.After(timeout): - t.Errorf("TIMEOUT: %s (%v):\n%s\n", tc, time.Since(now), output) - } - }, - }) - } - return itests, nil -} - -// getBlacklist reads the blacklist file and returns a set of test names to -// exclude. -func getBlacklist() (map[string]struct{}, error) { - blacklist := make(map[string]struct{}) - if *blacklistFile == "" { - return blacklist, nil - } - file, err := testutil.FindFile(*blacklistFile) - if err != nil { - return nil, err - } - f, err := os.Open(file) - if err != nil { - return nil, err - } - defer f.Close() - - r := csv.NewReader(f) - - // First line is header. Skip it. - if _, err := r.Read(); err != nil { - return nil, err - } - - for { - record, err := r.Read() - if err == io.EOF { - break - } - if err != nil { - return nil, err - } - blacklist[record[0]] = struct{}{} - } - return blacklist, nil -} - -// testDeps implements testing.testDeps (an unexported interface), and is -// required to use testing.MainStart. -type testDeps struct{} - -func (f testDeps) MatchString(a, b string) (bool, error) { return a == b, nil } -func (f testDeps) StartCPUProfile(io.Writer) error { return nil } -func (f testDeps) StopCPUProfile() {} -func (f testDeps) WriteProfileTo(string, io.Writer, int) error { return nil } -func (f testDeps) ImportPath() string { return "" } -func (f testDeps) StartTestLog(io.Writer) {} -func (f testDeps) StopTestLog() error { return nil } diff --git a/test/runtimes/runner.sh b/test/runtimes/runner.sh deleted file mode 100755 index a8d9a3460..000000000 --- a/test/runtimes/runner.sh +++ /dev/null @@ -1,35 +0,0 @@ -#!/bin/bash - -# Copyright 2018 The gVisor Authors. -# -# Licensed under the Apache License, Version 2.0 (the "License"); -# you may not use this file except in compliance with the License. -# You may obtain a copy of the License at -# -# http://www.apache.org/licenses/LICENSE-2.0 -# -# Unless required by applicable law or agreed to in writing, software -# distributed under the License is distributed on an "AS IS" BASIS, -# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -# See the License for the specific language governing permissions and -# limitations under the License. - -set -euf -x -o pipefail - -echo -- "$@" - -# Create outputs dir if it does not exist. -if [[ -n "${TEST_UNDECLARED_OUTPUTS_DIR}" ]]; then - mkdir -p "${TEST_UNDECLARED_OUTPUTS_DIR}" - chmod a+rwx "${TEST_UNDECLARED_OUTPUTS_DIR}" -fi - -# Update the timestamp on the shard status file. Bazel looks for this. -touch "${TEST_SHARD_STATUS_FILE}" - -# Get location of runner binary. -readonly runner=$(find "${TEST_SRCDIR}" -name runner) - -# Pass the arguments of this script directly to the runner. -exec "${runner}" "$@" - diff --git a/test/syscalls/BUILD b/test/syscalls/BUILD deleted file mode 100644 index 31d239c0e..000000000 --- a/test/syscalls/BUILD +++ /dev/null @@ -1,746 +0,0 @@ -load("//tools:defs.bzl", "go_binary") -load("//test/syscalls:build_defs.bzl", "syscall_test") - -package(licenses = ["notice"]) - -syscall_test(test = "//test/syscalls/linux:32bit_test") - -syscall_test(test = "//test/syscalls/linux:accept_bind_stream_test") - -syscall_test( - size = "large", - shard_count = 50, - test = "//test/syscalls/linux:accept_bind_test", -) - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:access_test", -) - -syscall_test(test = "//test/syscalls/linux:affinity_test") - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:aio_test", -) - -syscall_test( - size = "medium", - shard_count = 5, - test = "//test/syscalls/linux:alarm_test", -) - -syscall_test(test = "//test/syscalls/linux:arch_prctl_test") - -syscall_test(test = "//test/syscalls/linux:bad_test") - -syscall_test( - size = "large", - add_overlay = True, - test = "//test/syscalls/linux:bind_test", -) - -syscall_test(test = "//test/syscalls/linux:brk_test") - -syscall_test(test = "//test/syscalls/linux:socket_test") - -syscall_test( - size = "large", - shard_count = 50, - # Takes too long for TSAN. Since this is kind of a stress test that doesn't - # involve much concurrency, TSAN's usefulness here is limited anyway. - tags = ["nogotsan"], - test = "//test/syscalls/linux:socket_stress_test", -) - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:chdir_test", -) - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:chmod_test", -) - -syscall_test( - size = "medium", - add_overlay = True, - test = "//test/syscalls/linux:chown_test", - use_tmpfs = True, # chwon tests require gofer to be running as root. -) - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:chroot_test", -) - -syscall_test(test = "//test/syscalls/linux:clock_getres_test") - -syscall_test( - size = "medium", - test = "//test/syscalls/linux:clock_gettime_test", -) - -syscall_test(test = "//test/syscalls/linux:clock_nanosleep_test") - -syscall_test(test = "//test/syscalls/linux:concurrency_test") - -syscall_test( - add_uds_tree = True, - test = "//test/syscalls/linux:connect_external_test", - use_tmpfs = True, -) - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:creat_test", -) - -syscall_test(test = "//test/syscalls/linux:dev_test") - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:dup_test", -) - -syscall_test(test = "//test/syscalls/linux:epoll_test") - -syscall_test(test = "//test/syscalls/linux:eventfd_test") - -syscall_test(test = "//test/syscalls/linux:exceptions_test") - -syscall_test( - size = "medium", - add_overlay = True, - test = "//test/syscalls/linux:exec_test", -) - -syscall_test( - size = "medium", - add_overlay = True, - test = "//test/syscalls/linux:exec_binary_test", -) - -syscall_test(test = "//test/syscalls/linux:exit_test") - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:fadvise64_test", -) - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:fallocate_test", -) - -syscall_test(test = "//test/syscalls/linux:fault_test") - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:fchdir_test", -) - -syscall_test( - size = "medium", - test = "//test/syscalls/linux:fcntl_test", -) - -syscall_test( - size = "medium", - add_overlay = True, - test = "//test/syscalls/linux:flock_test", -) - -syscall_test(test = "//test/syscalls/linux:fork_test") - -syscall_test(test = "//test/syscalls/linux:fpsig_fork_test") - -syscall_test(test = "//test/syscalls/linux:fpsig_nested_test") - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:fsync_test", -) - -syscall_test( - size = "medium", - shard_count = 5, - test = "//test/syscalls/linux:futex_test", -) - -syscall_test(test = "//test/syscalls/linux:getcpu_host_test") - -syscall_test(test = "//test/syscalls/linux:getcpu_test") - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:getdents_test", -) - -syscall_test(test = "//test/syscalls/linux:getrandom_test") - -syscall_test(test = "//test/syscalls/linux:getrusage_test") - -syscall_test( - size = "medium", - add_overlay = False, # TODO(gvisor.dev/issue/317): enable when fixed. - test = "//test/syscalls/linux:inotify_test", -) - -syscall_test( - size = "medium", - add_overlay = True, - test = "//test/syscalls/linux:ioctl_test", -) - -syscall_test( - test = "//test/syscalls/linux:iptables_test", -) - -syscall_test( - size = "large", - shard_count = 5, - test = "//test/syscalls/linux:itimer_test", -) - -syscall_test(test = "//test/syscalls/linux:kill_test") - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:link_test", - use_tmpfs = True, # gofer needs CAP_DAC_READ_SEARCH to use AT_EMPTY_PATH with linkat(2) -) - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:lseek_test", -) - -syscall_test(test = "//test/syscalls/linux:madvise_test") - -syscall_test(test = "//test/syscalls/linux:memory_accounting_test") - -syscall_test(test = "//test/syscalls/linux:mempolicy_test") - -syscall_test(test = "//test/syscalls/linux:mincore_test") - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:mkdir_test", -) - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:mknod_test", -) - -syscall_test( - size = "medium", - shard_count = 5, - test = "//test/syscalls/linux:mmap_test", -) - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:mount_test", -) - -syscall_test( - size = "medium", - test = "//test/syscalls/linux:mremap_test", -) - -syscall_test( - size = "medium", - test = "//test/syscalls/linux:msync_test", -) - -syscall_test(test = "//test/syscalls/linux:munmap_test") - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:open_create_test", -) - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:open_test", -) - -syscall_test(test = "//test/syscalls/linux:packet_socket_raw_test") - -syscall_test(test = "//test/syscalls/linux:packet_socket_test") - -syscall_test(test = "//test/syscalls/linux:partial_bad_buffer_test") - -syscall_test(test = "//test/syscalls/linux:pause_test") - -syscall_test( - size = "large", - add_overlay = True, - shard_count = 5, - test = "//test/syscalls/linux:pipe_test", -) - -syscall_test(test = "//test/syscalls/linux:poll_test") - -syscall_test( - size = "medium", - test = "//test/syscalls/linux:ppoll_test", -) - -syscall_test(test = "//test/syscalls/linux:prctl_setuid_test") - -syscall_test(test = "//test/syscalls/linux:prctl_test") - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:pread64_test", -) - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:preadv_test", -) - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:preadv2_test", -) - -syscall_test(test = "//test/syscalls/linux:priority_test") - -syscall_test( - size = "medium", - test = "//test/syscalls/linux:proc_test", -) - -syscall_test(test = "//test/syscalls/linux:proc_pid_uid_gid_map_test") - -syscall_test(test = "//test/syscalls/linux:proc_net_test") - -syscall_test( - size = "medium", - test = "//test/syscalls/linux:pselect_test", -) - -syscall_test(test = "//test/syscalls/linux:ptrace_test") - -syscall_test( - size = "medium", - shard_count = 5, - test = "//test/syscalls/linux:pty_test", -) - -syscall_test( - test = "//test/syscalls/linux:pty_root_test", -) - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:pwritev2_test", -) - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:pwrite64_test", -) - -syscall_test(test = "//test/syscalls/linux:raw_socket_hdrincl_test") - -syscall_test(test = "//test/syscalls/linux:raw_socket_icmp_test") - -syscall_test(test = "//test/syscalls/linux:raw_socket_ipv4_test") - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:read_test", -) - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:readahead_test", -) - -syscall_test( - size = "medium", - shard_count = 5, - test = "//test/syscalls/linux:readv_socket_test", -) - -syscall_test( - size = "medium", - add_overlay = True, - test = "//test/syscalls/linux:readv_test", -) - -syscall_test( - size = "medium", - add_overlay = True, - test = "//test/syscalls/linux:rename_test", -) - -syscall_test(test = "//test/syscalls/linux:rlimits_test") - -syscall_test(test = "//test/syscalls/linux:rseq_test") - -syscall_test(test = "//test/syscalls/linux:rtsignal_test") - -syscall_test(test = "//test/syscalls/linux:signalfd_test") - -syscall_test(test = "//test/syscalls/linux:sched_test") - -syscall_test(test = "//test/syscalls/linux:sched_yield_test") - -syscall_test(test = "//test/syscalls/linux:seccomp_test") - -syscall_test(test = "//test/syscalls/linux:select_test") - -syscall_test( - shard_count = 20, - test = "//test/syscalls/linux:semaphore_test", -) - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:sendfile_socket_test", -) - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:sendfile_test", -) - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:splice_test", -) - -syscall_test(test = "//test/syscalls/linux:sigaction_test") - -# TODO(b/119826902): Enable once the test passes in runsc. -# syscall_test(test = "//test/syscalls/linux:sigaltstack_test") - -syscall_test(test = "//test/syscalls/linux:sigiret_test") - -syscall_test(test = "//test/syscalls/linux:sigprocmask_test") - -syscall_test( - size = "medium", - test = "//test/syscalls/linux:sigstop_test", -) - -syscall_test(test = "//test/syscalls/linux:sigtimedwait_test") - -syscall_test( - size = "medium", - test = "//test/syscalls/linux:shm_test", -) - -syscall_test( - size = "medium", - test = "//test/syscalls/linux:socket_abstract_non_blocking_test", -) - -syscall_test( - size = "large", - shard_count = 50, - test = "//test/syscalls/linux:socket_abstract_test", -) - -syscall_test( - size = "medium", - test = "//test/syscalls/linux:socket_domain_non_blocking_test", -) - -syscall_test( - size = "large", - shard_count = 50, - test = "//test/syscalls/linux:socket_domain_test", -) - -syscall_test( - size = "medium", - add_overlay = True, - test = "//test/syscalls/linux:socket_filesystem_non_blocking_test", -) - -syscall_test( - size = "large", - add_overlay = True, - shard_count = 50, - test = "//test/syscalls/linux:socket_filesystem_test", -) - -syscall_test( - size = "large", - shard_count = 50, - test = "//test/syscalls/linux:socket_inet_loopback_test", -) - -syscall_test( - size = "large", - shard_count = 50, - test = "//test/syscalls/linux:socket_ip_tcp_generic_loopback_test", -) - -syscall_test( - size = "medium", - test = "//test/syscalls/linux:socket_ip_tcp_loopback_non_blocking_test", -) - -syscall_test( - size = "large", - shard_count = 50, - test = "//test/syscalls/linux:socket_ip_tcp_loopback_test", -) - -syscall_test( - size = "medium", - shard_count = 50, - test = "//test/syscalls/linux:socket_ip_tcp_udp_generic_loopback_test", -) - -syscall_test( - size = "medium", - test = "//test/syscalls/linux:socket_ip_udp_loopback_non_blocking_test", -) - -syscall_test( - size = "large", - shard_count = 50, - test = "//test/syscalls/linux:socket_ip_udp_loopback_test", -) - -syscall_test( - size = "medium", - test = "//test/syscalls/linux:socket_ipv4_udp_unbound_loopback_test", -) - -syscall_test(test = "//test/syscalls/linux:socket_ip_unbound_test") - -syscall_test(test = "//test/syscalls/linux:socket_netdevice_test") - -syscall_test(test = "//test/syscalls/linux:socket_netlink_test") - -syscall_test(test = "//test/syscalls/linux:socket_netlink_route_test") - -syscall_test(test = "//test/syscalls/linux:socket_netlink_uevent_test") - -syscall_test(test = "//test/syscalls/linux:socket_blocking_local_test") - -syscall_test(test = "//test/syscalls/linux:socket_blocking_ip_test") - -syscall_test(test = "//test/syscalls/linux:socket_non_stream_blocking_local_test") - -syscall_test(test = "//test/syscalls/linux:socket_non_stream_blocking_udp_test") - -syscall_test( - size = "large", - test = "//test/syscalls/linux:socket_stream_blocking_local_test", -) - -syscall_test( - size = "large", - test = "//test/syscalls/linux:socket_stream_blocking_tcp_test", -) - -syscall_test( - size = "medium", - test = "//test/syscalls/linux:socket_stream_local_test", -) - -syscall_test( - size = "medium", - test = "//test/syscalls/linux:socket_stream_nonblock_local_test", -) - -syscall_test( - # NOTE(b/116636318): Large sendmsg may stall a long time. - size = "enormous", - shard_count = 5, - test = "//test/syscalls/linux:socket_unix_dgram_local_test", -) - -syscall_test( - size = "medium", - test = "//test/syscalls/linux:socket_unix_dgram_non_blocking_test", -) - -syscall_test( - size = "large", - add_overlay = True, - shard_count = 50, - test = "//test/syscalls/linux:socket_unix_pair_test", -) - -syscall_test( - # NOTE(b/116636318): Large sendmsg may stall a long time. - size = "enormous", - shard_count = 5, - test = "//test/syscalls/linux:socket_unix_seqpacket_local_test", -) - -syscall_test( - size = "medium", - test = "//test/syscalls/linux:socket_unix_stream_test", -) - -syscall_test( - size = "medium", - test = "//test/syscalls/linux:socket_unix_unbound_abstract_test", -) - -syscall_test( - size = "medium", - test = "//test/syscalls/linux:socket_unix_unbound_dgram_test", -) - -syscall_test( - size = "medium", - test = "//test/syscalls/linux:socket_unix_unbound_filesystem_test", -) - -syscall_test( - size = "medium", - shard_count = 10, - test = "//test/syscalls/linux:socket_unix_unbound_seqpacket_test", -) - -syscall_test( - size = "large", - shard_count = 50, - test = "//test/syscalls/linux:socket_unix_unbound_stream_test", -) - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:statfs_test", -) - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:stat_test", -) - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:stat_times_test", -) - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:sticky_test", -) - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:symlink_test", -) - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:sync_test", -) - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:sync_file_range_test", -) - -syscall_test(test = "//test/syscalls/linux:sysinfo_test") - -syscall_test(test = "//test/syscalls/linux:syslog_test") - -syscall_test(test = "//test/syscalls/linux:sysret_test") - -syscall_test( - size = "medium", - shard_count = 10, - test = "//test/syscalls/linux:tcp_socket_test", -) - -syscall_test(test = "//test/syscalls/linux:tgkill_test") - -syscall_test(test = "//test/syscalls/linux:timerfd_test") - -syscall_test(test = "//test/syscalls/linux:timers_test") - -syscall_test(test = "//test/syscalls/linux:time_test") - -syscall_test(test = "//test/syscalls/linux:tkill_test") - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:truncate_test", -) - -syscall_test(test = "//test/syscalls/linux:udp_bind_test") - -syscall_test( - size = "medium", - add_hostinet = True, - shard_count = 10, - test = "//test/syscalls/linux:udp_socket_test", -) - -syscall_test(test = "//test/syscalls/linux:uidgid_test") - -syscall_test(test = "//test/syscalls/linux:uname_test") - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:unlink_test", -) - -syscall_test(test = "//test/syscalls/linux:unshare_test") - -syscall_test(test = "//test/syscalls/linux:utimes_test") - -syscall_test( - size = "medium", - test = "//test/syscalls/linux:vdso_clock_gettime_test", -) - -syscall_test(test = "//test/syscalls/linux:vdso_test") - -syscall_test(test = "//test/syscalls/linux:vsyscall_test") - -syscall_test(test = "//test/syscalls/linux:vfork_test") - -syscall_test( - size = "medium", - shard_count = 5, - test = "//test/syscalls/linux:wait_test", -) - -syscall_test( - add_overlay = True, - test = "//test/syscalls/linux:write_test", -) - -syscall_test(test = "//test/syscalls/linux:proc_net_unix_test") - -syscall_test(test = "//test/syscalls/linux:proc_net_tcp_test") - -syscall_test(test = "//test/syscalls/linux:proc_net_udp_test") - -go_binary( - name = "syscall_test_runner", - testonly = 1, - srcs = ["syscall_test_runner.go"], - data = [ - "//runsc", - ], - deps = [ - "//pkg/log", - "//runsc/specutils", - "//runsc/testutil", - "//test/syscalls/gtest", - "//test/uds", - "@com_github_opencontainers_runtime-spec//specs-go:go_default_library", - "@org_golang_x_sys//unix:go_default_library", - ], -) diff --git a/test/syscalls/README.md b/test/syscalls/README.md deleted file mode 100644 index 9e0991940..000000000 --- a/test/syscalls/README.md +++ /dev/null @@ -1,107 +0,0 @@ -# gVisor system call test suite - -This is a test suite for Linux system calls. It runs under both gVisor and -Linux, and ensures compatibility between the two. - -When adding support for a new syscall (or syscall argument) to gVisor, a -corresponding syscall test should be added. It's usually recommended to write -the test first and make sure that it passes on Linux before making changes to -gVisor. - -This document outlines the general guidelines for tests and specific rules that -must be followed for new tests. - -## Running the tests - -Each test file generates three different test targets that run in different -environments: - -* a `native` target that runs directly on the host machine, -* a `runsc_ptrace` target that runs inside runsc using the ptrace platform, and -* a `runsc_kvm` target that runs inside runsc using the KVM platform. - -For example, the test in `access_test.cc` generates the following targets: - -* `//test/syscalls:access_test_native` -* `//test/syscalls:access_test_runsc_ptrace` -* `//test/syscalls:access_test_runsc_kvm` - -Any of these targets can be run directly via `bazel test`. - -```bash -$ bazel test //test/syscalls:access_test_native -$ bazel test //test/syscalls:access_test_runsc_ptrace -$ bazel test //test/syscalls:access_test_runsc_kvm -``` - -To run all the tests on a particular platform, you can filter by the platform -tag: - -```bash -# Run all tests in native environment: -$ bazel test --test_tag_filters=native //test/syscalls/... - -# Run all tests in runsc with ptrace: -$ bazel test --test_tag_filters=runsc_ptrace //test/syscalls/... - -# Run all tests in runsc with kvm: -$ bazel test --test_tag_filters=runsc_kvm //test/syscalls/... -``` - -You can also run all the tests on every platform. (Warning, this may take a -while to run.) - -```bash -# Run all tests on every platform: -$ bazel test //test/syscalls/... -``` - -## Writing new tests - -Whenever we add support for a new syscall, or add support for a new argument or -option for a syscall, we should always add a new test (perhaps many new tests). - -In general, it is best to write the test first and make sure it passes on Linux -by running the test on the `native` platform on a Linux machine. This ensures -that the gVisor implementation matches actual Linux behavior. Sometimes man -pages contain errors, so always check the actual Linux behavior. - -gVisor uses the [Google Test][googletest] test framework, with a few custom -matchers and guidelines, described below. - -### Syscall matchers - -When testing an individual system call, use the following syscall matchers, -which will match the value returned by the syscall and the errno. - -```cc -SyscallSucceeds() -SyscallSucceedsWithValue(...) -SyscallFails() -SyscallFailsWithErrno(...) -``` - -### Use test utilities (RAII classes) - -The test utilties are written as RAII classes. These utilities should be -preferred over custom test harnesses. - -Local class instances should be preferred, wherever possible, over full test -fixtures. - -A test utility should be created when there is more than one test that requires -that same functionality, otherwise the class should be test local. - -## Save/Restore support in tests - -gVisor supports save/restore, and our syscall tests are written in a way to -enable saving/restoring at certain points. Hence, there are calls to -`MaybeSave`, and certain tests that should not trigger saves are named with -`NoSave`. - -However, the current open-source test runner does not yet support triggering -save/restore, so these functions and annotations have no effect on the tests. We -plan on extending the test runner to trigger save/restore. Until then, these -functions and annotations should be ignored. - -[googletest]: https://github.com/abseil/googletest diff --git a/test/syscalls/build_defs.bzl b/test/syscalls/build_defs.bzl deleted file mode 100644 index cbab85ef7..000000000 --- a/test/syscalls/build_defs.bzl +++ /dev/null @@ -1,180 +0,0 @@ -"""Defines a rule for syscall test targets.""" - -load("//tools:defs.bzl", "loopback") - -def syscall_test( - test, - shard_count = 5, - size = "small", - use_tmpfs = False, - add_overlay = False, - add_uds_tree = False, - add_hostinet = False, - tags = None): - """syscall_test is a macro that will create targets for all platforms. - - Args: - test: the test target. - shard_count: shards for defined tests. - size: the defined test size. - use_tmpfs: use tmpfs in the defined tests. - add_overlay: add an overlay test. - add_uds_tree: add a UDS test. - add_hostinet: add a hostinet test. - tags: starting test tags. - """ - - _syscall_test( - test = test, - shard_count = shard_count, - size = size, - platform = "native", - use_tmpfs = False, - add_uds_tree = add_uds_tree, - tags = tags, - ) - - _syscall_test( - test = test, - shard_count = shard_count, - size = size, - platform = "kvm", - use_tmpfs = use_tmpfs, - add_uds_tree = add_uds_tree, - tags = tags, - ) - - _syscall_test( - test = test, - shard_count = shard_count, - size = size, - platform = "ptrace", - use_tmpfs = use_tmpfs, - add_uds_tree = add_uds_tree, - tags = tags, - ) - - if add_overlay: - _syscall_test( - test = test, - shard_count = shard_count, - size = size, - platform = "ptrace", - use_tmpfs = False, # overlay is adding a writable tmpfs on top of root. - add_uds_tree = add_uds_tree, - tags = tags, - overlay = True, - ) - - if not use_tmpfs: - # Also test shared gofer access. - _syscall_test( - test = test, - shard_count = shard_count, - size = size, - platform = "ptrace", - use_tmpfs = use_tmpfs, - add_uds_tree = add_uds_tree, - tags = tags, - file_access = "shared", - ) - - if add_hostinet: - _syscall_test( - test = test, - shard_count = shard_count, - size = size, - platform = "ptrace", - use_tmpfs = use_tmpfs, - network = "host", - add_uds_tree = add_uds_tree, - tags = tags, - ) - -def _syscall_test( - test, - shard_count, - size, - platform, - use_tmpfs, - tags, - network = "none", - file_access = "exclusive", - overlay = False, - add_uds_tree = False): - test_name = test.split(":")[1] - - # Prepend "runsc" to non-native platform names. - full_platform = platform if platform == "native" else "runsc_" + platform - - name = test_name + "_" + full_platform - if file_access == "shared": - name += "_shared" - if overlay: - name += "_overlay" - if network != "none": - name += "_" + network + "net" - - if tags == None: - tags = [] - - # Add the full_platform and file access in a tag to make it easier to run - # all the tests on a specific flavor. Use --test_tag_filters=ptrace,file_shared. - tags += [full_platform, "file_" + file_access] - - # Hash this target into one of 15 buckets. This can be used to - # randomly split targets between different workflows. - hash15 = hash(native.package_name() + name) % 15 - tags.append("hash15:" + str(hash15)) - - # TODO(b/139838000): Tests using hostinet must be disabled on Guitar until - # we figure out how to request ipv4 sockets on Guitar machines. - if network == "host": - tags.append("noguitar") - - # Disable off-host networking. - tags.append("requires-net:loopback") - - # Add tag to prevent the tests from running in a Bazel sandbox. - # TODO(b/120560048): Make the tests run without this tag. - tags.append("no-sandbox") - - # TODO(b/112165693): KVM tests are tagged "manual" to until the platform is - # more stable. - if platform == "kvm": - tags.append("manual") - tags.append("requires-kvm") - - # TODO(b/112165693): Remove when tests pass reliably. - tags.append("notap") - - args = [ - # Arguments are passed directly to syscall_test_runner binary. - "--test-name=" + test_name, - "--platform=" + platform, - "--network=" + network, - "--use-tmpfs=" + str(use_tmpfs), - "--file-access=" + file_access, - "--overlay=" + str(overlay), - "--add-uds-tree=" + str(add_uds_tree), - ] - - sh_test( - srcs = ["syscall_test_runner.sh"], - name = name, - data = [ - ":syscall_test_runner", - loopback, - test, - ], - args = args, - size = size, - tags = tags, - shard_count = shard_count, - ) - -def sh_test(**kwargs): - """Wraps the standard sh_test.""" - native.sh_test( - **kwargs - ) diff --git a/test/syscalls/gtest/BUILD b/test/syscalls/gtest/BUILD deleted file mode 100644 index de4b2727c..000000000 --- a/test/syscalls/gtest/BUILD +++ /dev/null @@ -1,9 +0,0 @@ -load("//tools:defs.bzl", "go_library") - -package(licenses = ["notice"]) - -go_library( - name = "gtest", - srcs = ["gtest.go"], - visibility = ["//:sandbox"], -) diff --git a/test/syscalls/gtest/gtest.go b/test/syscalls/gtest/gtest.go deleted file mode 100644 index bdec8eb07..000000000 --- a/test/syscalls/gtest/gtest.go +++ /dev/null @@ -1,93 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// Package gtest contains helpers for running google-test tests from Go. -package gtest - -import ( - "fmt" - "os/exec" - "strings" -) - -var ( - // ListTestFlag is the flag that will list tests in gtest binaries. - ListTestFlag = "--gtest_list_tests" - - // FilterTestFlag is the flag that will filter tests in gtest binaries. - FilterTestFlag = "--gtest_filter" -) - -// TestCase is a single gtest test case. -type TestCase struct { - // Suite is the suite for this test. - Suite string - - // Name is the name of this individual test. - Name string -} - -// FullName returns the name of the test including the suite. It is suitable to -// pass to "-gtest_filter". -func (tc TestCase) FullName() string { - return fmt.Sprintf("%s.%s", tc.Suite, tc.Name) -} - -// ParseTestCases calls a gtest test binary to list its test and returns a -// slice with the name and suite of each test. -func ParseTestCases(testBin string, extraArgs ...string) ([]TestCase, error) { - args := append([]string{ListTestFlag}, extraArgs...) - cmd := exec.Command(testBin, args...) - out, err := cmd.Output() - if err != nil { - exitErr, ok := err.(*exec.ExitError) - if !ok { - return nil, fmt.Errorf("could not enumerate gtest tests: %v", err) - } - return nil, fmt.Errorf("could not enumerate gtest tests: %v\nstderr:\n%s", err, exitErr.Stderr) - } - - var t []TestCase - var suite string - for _, line := range strings.Split(string(out), "\n") { - // Strip comments. - line = strings.Split(line, "#")[0] - - // New suite? - if !strings.HasPrefix(line, " ") { - suite = strings.TrimSuffix(strings.TrimSpace(line), ".") - continue - } - - // Individual test. - name := strings.TrimSpace(line) - - // Do we have a suite yet? - if suite == "" { - return nil, fmt.Errorf("test without a suite: %v", name) - } - - // Add this individual test. - t = append(t, TestCase{ - Suite: suite, - Name: name, - }) - - } - - if len(t) == 0 { - return nil, fmt.Errorf("no tests parsed from %v", testBin) - } - return t, nil -} diff --git a/test/syscalls/linux/32bit.cc b/test/syscalls/linux/32bit.cc deleted file mode 100644 index c47a05181..000000000 --- a/test/syscalls/linux/32bit.cc +++ /dev/null @@ -1,248 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <string.h> -#include <sys/mman.h> - -#include "gtest/gtest.h" -#include "absl/base/macros.h" -#include "test/util/memory_util.h" -#include "test/util/platform_util.h" -#include "test/util/posix_error.h" -#include "test/util/test_util.h" - -#ifndef __x86_64__ -#error "This test is x86-64 specific." -#endif - -namespace gvisor { -namespace testing { - -namespace { - -constexpr char kInt3 = '\xcc'; -constexpr char kInt80[2] = {'\xcd', '\x80'}; -constexpr char kSyscall[2] = {'\x0f', '\x05'}; -constexpr char kSysenter[2] = {'\x0f', '\x34'}; - -void ExitGroup32(const char instruction[2], int code) { - const Mapping m = ASSERT_NO_ERRNO_AND_VALUE( - Mmap(nullptr, kPageSize, PROT_READ | PROT_WRITE | PROT_EXEC, - MAP_PRIVATE | MAP_ANONYMOUS | MAP_32BIT, -1, 0)); - - // Fill with INT 3 in case we execute too far. - memset(m.ptr(), kInt3, m.len()); - - // Copy in the actual instruction. - memcpy(m.ptr(), instruction, 2); - - // We're playing *extremely* fast-and-loose with the various syscall ABIs - // here, which we can more-or-less get away with since exit_group doesn't - // return. - // - // SYSENTER expects the user stack in (%ebp) and arg6 in 0(%ebp). The kernel - // will unconditionally dereference %ebp for arg6, so we must pass a valid - // address or it will return EFAULT. - // - // SYSENTER also unconditionally returns to thread_info->sysenter_return which - // is ostensibly a stub in the 32-bit VDSO. But a 64-bit binary doesn't have - // the 32-bit VDSO mapped, so sysenter_return will simply be the value - // inherited from the most recent 32-bit ancestor, or NULL if there is none. - // As a result, return would not return from SYSENTER. - asm volatile( - "movl $252, %%eax\n" // exit_group - "movl %[code], %%ebx\n" // code - "movl %%edx, %%ebp\n" // SYSENTER: user stack (use IP as a valid addr) - "leaq -20(%%rsp), %%rsp\n" - "movl $0x2b, 16(%%rsp)\n" // SS = CPL3 data segment - "movl $0,12(%%rsp)\n" // ESP = nullptr (unused) - "movl $0, 8(%%rsp)\n" // EFLAGS - "movl $0x23, 4(%%rsp)\n" // CS = CPL3 32-bit code segment - "movl %%edx, 0(%%rsp)\n" // EIP - "iretl\n" - "int $3\n" - : - : [ code ] "m"(code), [ ip ] "d"(m.ptr()) - : "rax", "rbx", "rsp"); -} - -constexpr int kExitCode = 42; - -TEST(Syscall32Bit, Int80) { - switch (PlatformSupport32Bit()) { - case PlatformSupport::NotSupported: - break; - case PlatformSupport::Segfault: - EXPECT_EXIT(ExitGroup32(kInt80, kExitCode), - ::testing::KilledBySignal(SIGSEGV), ""); - break; - - case PlatformSupport::Ignored: - // Since the call is ignored, we'll hit the int3 trap. - EXPECT_EXIT(ExitGroup32(kInt80, kExitCode), - ::testing::KilledBySignal(SIGTRAP), ""); - break; - - case PlatformSupport::Allowed: - EXPECT_EXIT(ExitGroup32(kInt80, kExitCode), ::testing::ExitedWithCode(42), - ""); - break; - } -} - -TEST(Syscall32Bit, Sysenter) { - if ((PlatformSupport32Bit() == PlatformSupport::Allowed || - PlatformSupport32Bit() == PlatformSupport::Ignored) && - GetCPUVendor() == CPUVendor::kAMD) { - // SYSENTER is an illegal instruction in compatibility mode on AMD. - EXPECT_EXIT(ExitGroup32(kSysenter, kExitCode), - ::testing::KilledBySignal(SIGILL), ""); - return; - } - - switch (PlatformSupport32Bit()) { - case PlatformSupport::NotSupported: - break; - - case PlatformSupport::Segfault: - EXPECT_EXIT(ExitGroup32(kSysenter, kExitCode), - ::testing::KilledBySignal(SIGSEGV), ""); - break; - - case PlatformSupport::Ignored: - // See above, except expected code is SIGSEGV. - EXPECT_EXIT(ExitGroup32(kSysenter, kExitCode), - ::testing::KilledBySignal(SIGSEGV), ""); - break; - - case PlatformSupport::Allowed: - EXPECT_EXIT(ExitGroup32(kSysenter, kExitCode), - ::testing::ExitedWithCode(42), ""); - break; - } -} - -TEST(Syscall32Bit, Syscall) { - if ((PlatformSupport32Bit() == PlatformSupport::Allowed || - PlatformSupport32Bit() == PlatformSupport::Ignored) && - GetCPUVendor() == CPUVendor::kIntel) { - // SYSCALL is an illegal instruction in compatibility mode on Intel. - EXPECT_EXIT(ExitGroup32(kSyscall, kExitCode), - ::testing::KilledBySignal(SIGILL), ""); - return; - } - - switch (PlatformSupport32Bit()) { - case PlatformSupport::NotSupported: - break; - - case PlatformSupport::Segfault: - EXPECT_EXIT(ExitGroup32(kSyscall, kExitCode), - ::testing::KilledBySignal(SIGSEGV), ""); - break; - - case PlatformSupport::Ignored: - // See above. - EXPECT_EXIT(ExitGroup32(kSyscall, kExitCode), - ::testing::KilledBySignal(SIGSEGV), ""); - break; - - case PlatformSupport::Allowed: - EXPECT_EXIT(ExitGroup32(kSyscall, kExitCode), - ::testing::ExitedWithCode(42), ""); - break; - } -} - -// Far call code called below. -// -// Input stack layout: -// -// %esp+12 lcall segment -// %esp+8 lcall address offset -// %esp+0 return address -// -// The lcall will enter compatibility mode and jump to the call address (the -// address of the lret). The lret will return to 64-bit mode at the retq, which -// will return to the external caller of this function. -// -// Since this enters compatibility mode, it must be mapped in a 32-bit region of -// address space and have a 32-bit stack pointer. -constexpr char kFarCall[] = { - '\x67', '\xff', '\x5c', '\x24', '\x08', // lcall *8(%esp) - '\xc3', // retq - '\xcb', // lret -}; - -void FarCall32() { - const Mapping m = ASSERT_NO_ERRNO_AND_VALUE( - Mmap(nullptr, kPageSize, PROT_READ | PROT_WRITE | PROT_EXEC, - MAP_PRIVATE | MAP_ANONYMOUS | MAP_32BIT, -1, 0)); - - // Fill with INT 3 in case we execute too far. - memset(m.ptr(), kInt3, m.len()); - - // 32-bit code. - memcpy(m.ptr(), kFarCall, sizeof(kFarCall)); - - // Use the end of the code page as its stack. - uintptr_t stack = m.endaddr(); - - uintptr_t lcall = m.addr(); - uintptr_t lret = m.addr() + sizeof(kFarCall) - 1; - - // N.B. We must save and restore RSP manually. GCC can do so automatically - // with an "rsp" clobber, but clang cannot. - asm volatile( - // Place the address of lret (%edx) and the 32-bit code segment (0x23) on - // the 32-bit stack for lcall. - "subl $0x8, %%ecx\n" - "movl $0x23, 4(%%ecx)\n" - "movl %%edx, 0(%%ecx)\n" - - // Save the current stack and switch to 32-bit stack. - "pushq %%rbp\n" - "movq %%rsp, %%rbp\n" - "movq %%rcx, %%rsp\n" - - // Run the lcall code. - "callq *%%rbx\n" - - // Restore the old stack. - "leaveq\n" - : "+c"(stack) - : "b"(lcall), "d"(lret)); -} - -TEST(Call32Bit, Disallowed) { - switch (PlatformSupport32Bit()) { - case PlatformSupport::NotSupported: - break; - - case PlatformSupport::Segfault: - EXPECT_EXIT(FarCall32(), ::testing::KilledBySignal(SIGSEGV), ""); - break; - - case PlatformSupport::Ignored: - ABSL_FALLTHROUGH_INTENDED; - case PlatformSupport::Allowed: - // Shouldn't crash. - FarCall32(); - } -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/BUILD b/test/syscalls/linux/BUILD deleted file mode 100644 index ca1af209a..000000000 --- a/test/syscalls/linux/BUILD +++ /dev/null @@ -1,3793 +0,0 @@ -load("//tools:defs.bzl", "cc_binary", "cc_library", "default_net_util", "gtest", "select_arch", "select_system") - -package( - default_visibility = ["//:sandbox"], - licenses = ["notice"], -) - -exports_files( - [ - "socket.cc", - "socket_inet_loopback.cc", - "socket_ip_loopback_blocking.cc", - "socket_ip_tcp_loopback.cc", - "socket_ip_udp_loopback.cc", - "socket_ip_unbound.cc", - "socket_ipv4_tcp_unbound_external_networking_test.cc", - "socket_ipv4_udp_unbound_external_networking_test.cc", - "socket_ipv4_udp_unbound_loopback.cc", - "tcp_socket.cc", - "udp_socket.cc", - ], - visibility = ["//:sandbox"], -) - -cc_binary( - name = "sigaltstack_check", - testonly = 1, - srcs = ["sigaltstack_check.cc"], - deps = ["//test/util:logging"], -) - -cc_binary( - name = "exec_assert_closed_workload", - testonly = 1, - srcs = ["exec_assert_closed_workload.cc"], - deps = [ - "@com_google_absl//absl/strings", - ], -) - -cc_binary( - name = "exec_basic_workload", - testonly = 1, - srcs = [ - "exec.h", - "exec_basic_workload.cc", - ], -) - -cc_binary( - name = "exec_proc_exe_workload", - testonly = 1, - srcs = ["exec_proc_exe_workload.cc"], - deps = [ - "//test/util:fs_util", - "//test/util:posix_error", - ], -) - -cc_binary( - name = "exec_state_workload", - testonly = 1, - srcs = ["exec_state_workload.cc"], - deps = ["@com_google_absl//absl/strings"], -) - -sh_binary( - name = "exit_script", - testonly = 1, - srcs = [ - "exit_script.sh", - ], -) - -cc_binary( - name = "priority_execve", - testonly = 1, - srcs = [ - "priority_execve.cc", - ], -) - -cc_library( - name = "base_poll_test", - testonly = 1, - srcs = ["base_poll_test.cc"], - hdrs = ["base_poll_test.h"], - deps = [ - "@com_google_absl//absl/memory", - "@com_google_absl//absl/synchronization", - "@com_google_absl//absl/time", - gtest, - "//test/util:logging", - "//test/util:signal_util", - "//test/util:test_util", - "//test/util:thread_util", - ], -) - -cc_library( - name = "file_base", - testonly = 1, - hdrs = ["file_base.h"], - deps = [ - "//test/util:file_descriptor", - "@com_google_absl//absl/strings", - gtest, - "//test/util:posix_error", - "//test/util:temp_path", - "//test/util:test_util", - ], -) - -cc_library( - name = "socket_netlink_util", - testonly = 1, - srcs = ["socket_netlink_util.cc"], - hdrs = ["socket_netlink_util.h"], - deps = [ - ":socket_test_util", - "//test/util:file_descriptor", - "//test/util:posix_error", - "@com_google_absl//absl/strings", - ], -) - -cc_library( - name = "socket_test_util", - testonly = 1, - srcs = [ - "socket_test_util.cc", - "socket_test_util_impl.cc", - ], - hdrs = ["socket_test_util.h"], - defines = select_system(), - deps = default_net_util() + [ - gtest, - "@com_google_absl//absl/memory", - "@com_google_absl//absl/strings", - "@com_google_absl//absl/strings:str_format", - "@com_google_absl//absl/time", - "@com_google_absl//absl/types:optional", - "//test/util:file_descriptor", - "//test/util:posix_error", - "//test/util:temp_path", - "//test/util:test_util", - "//test/util:thread_util", - ], -) - -cc_library( - name = "temp_umask", - hdrs = ["temp_umask.h"], -) - -cc_library( - name = "unix_domain_socket_test_util", - testonly = 1, - srcs = ["unix_domain_socket_test_util.cc"], - hdrs = ["unix_domain_socket_test_util.h"], - deps = [ - ":socket_test_util", - "@com_google_absl//absl/strings", - gtest, - "//test/util:test_util", - ], -) - -cc_library( - name = "ip_socket_test_util", - testonly = 1, - srcs = ["ip_socket_test_util.cc"], - hdrs = ["ip_socket_test_util.h"], - deps = [ - ":socket_test_util", - "@com_google_absl//absl/strings", - ], -) - -cc_binary( - name = "clock_nanosleep_test", - testonly = 1, - srcs = ["clock_nanosleep.cc"], - linkstatic = 1, - deps = [ - "//test/util:cleanup", - "@com_google_absl//absl/time", - gtest, - "//test/util:posix_error", - "//test/util:signal_util", - "//test/util:test_main", - "//test/util:test_util", - "//test/util:thread_util", - "//test/util:timer_util", - ], -) - -cc_binary( - name = "32bit_test", - testonly = 1, - srcs = select_arch( - amd64 = ["32bit.cc"], - arm64 = [], - ), - linkstatic = 1, - deps = [ - "@com_google_absl//absl/base:core_headers", - gtest, - "//test/util:memory_util", - "//test/util:platform_util", - "//test/util:posix_error", - "//test/util:test_main", - "//test/util:test_util", - ], -) - -cc_binary( - name = "accept_bind_test", - testonly = 1, - srcs = ["accept_bind.cc"], - linkstatic = 1, - deps = [ - ":socket_test_util", - ":unix_domain_socket_test_util", - "//test/util:file_descriptor", - gtest, - "//test/util:test_main", - "//test/util:test_util", - ], -) - -cc_binary( - name = "accept_bind_stream_test", - testonly = 1, - srcs = ["accept_bind_stream.cc"], - linkstatic = 1, - deps = [ - ":socket_test_util", - ":unix_domain_socket_test_util", - "//test/util:file_descriptor", - gtest, - "//test/util:test_main", - "//test/util:test_util", - ], -) - -cc_binary( - name = "access_test", - testonly = 1, - srcs = ["access.cc"], - linkstatic = 1, - deps = [ - "//test/util:capability_util", - "//test/util:fs_util", - gtest, - "//test/util:temp_path", - "//test/util:test_main", - "//test/util:test_util", - ], -) - -cc_binary( - name = "affinity_test", - testonly = 1, - srcs = ["affinity.cc"], - linkstatic = 1, - deps = [ - "//test/util:cleanup", - "//test/util:fs_util", - "@com_google_absl//absl/strings", - gtest, - "//test/util:posix_error", - "//test/util:test_main", - "//test/util:test_util", - "//test/util:thread_util", - ], -) - -cc_binary( - name = "aio_test", - testonly = 1, - srcs = [ - "aio.cc", - "file_base.h", - ], - linkstatic = 1, - deps = [ - "//test/util:cleanup", - "//test/util:file_descriptor", - "//test/util:fs_util", - "@com_google_absl//absl/strings", - gtest, - "//test/util:memory_util", - "//test/util:posix_error", - "//test/util:proc_util", - "//test/util:temp_path", - "//test/util:test_main", - "//test/util:test_util", - ], -) - -cc_binary( - name = "alarm_test", - testonly = 1, - srcs = ["alarm.cc"], - linkstatic = 1, - deps = [ - "//test/util:file_descriptor", - "@com_google_absl//absl/time", - gtest, - "//test/util:logging", - "//test/util:signal_util", - "//test/util:test_util", - "//test/util:thread_util", - ], -) - -cc_binary( - name = "bad_test", - testonly = 1, - srcs = ["bad.cc"], - linkstatic = 1, - visibility = [ - "//:sandbox", - ], - deps = [ - gtest, - "//test/util:test_main", - "//test/util:test_util", - ], -) - -cc_binary( - name = "bind_test", - testonly = 1, - srcs = ["bind.cc"], - linkstatic = 1, - deps = [ - ":socket_test_util", - ":unix_domain_socket_test_util", - gtest, - "//test/util:test_main", - "//test/util:test_util", - ], -) - -cc_binary( - name = "socket_test", - testonly = 1, - srcs = ["socket.cc"], - linkstatic = 1, - deps = [ - ":socket_test_util", - "//test/util:file_descriptor", - gtest, - "//test/util:test_main", - "//test/util:test_util", - ], -) - -cc_binary( - name = "brk_test", - testonly = 1, - srcs = ["brk.cc"], - linkstatic = 1, - deps = [ - "//test/util:test_main", - "//test/util:test_util", - ], -) - -cc_binary( - name = "chdir_test", - testonly = 1, - srcs = ["chdir.cc"], - linkstatic = 1, - deps = [ - "//test/util:capability_util", - 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":unix_domain_socket_test_util", - gtest, - "//test/util:test_main", - "//test/util:test_util", - ], -) - -cc_binary( - name = "socket_non_stream_blocking_udp_test", - testonly = 1, - srcs = [ - "socket_ip_udp_loopback_blocking.cc", - ], - linkstatic = 1, - deps = [ - ":ip_socket_test_util", - ":socket_non_stream_blocking_test_cases", - ":socket_test_util", - gtest, - "//test/util:test_main", - "//test/util:test_util", - ], -) - -cc_binary( - name = "socket_unix_pair_test", - testonly = 1, - srcs = [ - "socket_unix_pair.cc", - ], - linkstatic = 1, - deps = [ - ":socket_test_util", - ":socket_unix_cmsg_test_cases", - ":socket_unix_test_cases", - ":unix_domain_socket_test_util", - gtest, - "//test/util:test_main", - "//test/util:test_util", - ], -) - -cc_binary( - name = "socket_unix_unbound_seqpacket_test", - testonly = 1, - srcs = ["socket_unix_unbound_seqpacket.cc"], - linkstatic = 1, - deps = [ - ":socket_test_util", - ":unix_domain_socket_test_util", - gtest, - "//test/util:test_main", - "//test/util:test_util", - ], -) - -cc_binary( - name = "socket_unix_unbound_stream_test", - testonly = 1, - srcs = ["socket_unix_unbound_stream.cc"], - linkstatic = 1, - deps = [ - ":socket_test_util", - ":unix_domain_socket_test_util", - gtest, - "//test/util:test_main", - "//test/util:test_util", - ], -) - -cc_binary( - name = "socket_netdevice_test", - testonly = 1, - srcs = ["socket_netdevice.cc"], - linkstatic = 1, - deps = [ - ":socket_netlink_util", - ":socket_test_util", - "//test/util:file_descriptor", - "@com_google_absl//absl/base:endian", - gtest, - "//test/util:test_main", - "//test/util:test_util", - ], -) - -cc_binary( - name = "stat_test", - testonly = 1, - srcs = [ - "file_base.h", - "stat.cc", - ], - linkstatic = 1, - deps = [ - "//test/util:cleanup", - "//test/util:file_descriptor", - "//test/util:fs_util", - "@com_google_absl//absl/strings", - gtest, - "//test/util:posix_error", - "//test/util:temp_path", - "//test/util:test_main", - "//test/util:test_util", - ], -) - -cc_binary( - name = "stat_times_test", - testonly = 1, - srcs = ["stat_times.cc"], - linkstatic = 1, - deps = [ - "//test/util:file_descriptor", - "@com_google_absl//absl/time", - gtest, - "//test/util:temp_path", - "//test/util:test_main", - "//test/util:test_util", - ], -) - -cc_binary( - name = "statfs_test", - testonly = 1, - srcs = [ - "file_base.h", - "statfs.cc", - ], - linkstatic = 1, - deps = [ - "//test/util:file_descriptor", - "@com_google_absl//absl/strings", - gtest, - "//test/util:posix_error", - "//test/util:temp_path", - "//test/util:test_main", - "//test/util:test_util", - ], -) - -cc_binary( - name = "symlink_test", - testonly = 1, - srcs = ["symlink.cc"], - linkstatic = 1, - deps = [ - "//test/util:capability_util", - "//test/util:file_descriptor", - "//test/util:fs_util", - gtest, - "//test/util:temp_path", - "//test/util:test_main", - "//test/util:test_util", - ], -) - -cc_binary( - name = "sync_test", - testonly = 1, - srcs = ["sync.cc"], - linkstatic = 1, - deps = [ - gtest, - "//test/util:temp_path", - "//test/util:test_main", - "//test/util:test_util", - ], -) - -cc_binary( - name = "sysinfo_test", - testonly = 1, - srcs = ["sysinfo.cc"], - linkstatic = 1, - deps = [ - "@com_google_absl//absl/time", - gtest, - "//test/util:test_main", - "//test/util:test_util", - ], -) - -cc_binary( - name = "syslog_test", - testonly = 1, - srcs = ["syslog.cc"], - linkstatic = 1, - deps = [ - gtest, - "//test/util:test_main", - "//test/util:test_util", - ], -) - -cc_binary( - name = "sysret_test", - testonly = 1, - srcs = ["sysret.cc"], - linkstatic = 1, - deps = [ - gtest, - "//test/util:logging", - "//test/util:test_main", - "//test/util:test_util", - ], -) - -cc_binary( - name = "tcp_socket_test", - testonly = 1, - srcs = ["tcp_socket.cc"], - linkstatic = 1, - deps = [ - ":socket_test_util", - "//test/util:file_descriptor", - "@com_google_absl//absl/time", - gtest, - "//test/util:posix_error", - "//test/util:test_main", - "//test/util:test_util", - "//test/util:thread_util", - ], -) - -cc_binary( - name = "tgkill_test", - testonly = 1, - srcs = ["tgkill.cc"], - linkstatic = 1, - deps = [ - gtest, - "//test/util:signal_util", - "//test/util:test_main", - "//test/util:test_util", - "//test/util:thread_util", - ], -) - -cc_binary( - name = "time_test", - testonly = 1, - srcs = ["time.cc"], - linkstatic = 1, - deps = [ - gtest, - "//test/util:proc_util", - "//test/util:test_main", - "//test/util:test_util", - ], -) - -cc_binary( - name = "timerfd_test", - testonly = 1, - srcs = ["timerfd.cc"], - linkstatic = 1, - deps = [ - "//test/util:file_descriptor", - "//test/util:posix_error", - "//test/util:test_main", - "//test/util:test_util", - "@com_google_absl//absl/time", - ], -) - -cc_binary( - name = "timers_test", - testonly = 1, - srcs = ["timers.cc"], - linkstatic = 1, - deps = [ - "//test/util:cleanup", - "@com_google_absl//absl/flags:flag", - "@com_google_absl//absl/time", - gtest, - "//test/util:logging", - "//test/util:multiprocess_util", - "//test/util:posix_error", - "//test/util:signal_util", - "//test/util:test_util", - "//test/util:thread_util", - ], -) - -cc_binary( - name = "tkill_test", - testonly = 1, - srcs = ["tkill.cc"], - linkstatic = 1, - deps = [ - gtest, - "//test/util:logging", - "//test/util:test_main", - "//test/util:test_util", - "//test/util:thread_util", - ], -) - -cc_binary( - name = "truncate_test", - testonly = 1, - srcs = ["truncate.cc"], - linkstatic = 1, - deps = [ - ":file_base", - "//test/util:capability_util", - "//test/util:cleanup", - "//test/util:file_descriptor", - "@com_google_absl//absl/strings", - gtest, - "//test/util:temp_path", - "//test/util:test_main", - "//test/util:test_util", - ], -) - -cc_library( - name = "udp_socket_test_cases", - testonly = 1, - srcs = [ - "udp_socket_errqueue_test_case.cc", - "udp_socket_test_cases.cc", - ], - hdrs = ["udp_socket_test_cases.h"], - defines = select_system(), - deps = [ - ":socket_test_util", - ":unix_domain_socket_test_util", - "@com_google_absl//absl/base:core_headers", - "@com_google_absl//absl/time", - gtest, - "//test/util:test_main", - "//test/util:test_util", - "//test/util:thread_util", - ], - alwayslink = 1, -) - -cc_binary( - name = "udp_socket_test", - testonly = 1, - srcs = ["udp_socket.cc"], - linkstatic = 1, - deps = [ - ":udp_socket_test_cases", - ], -) - -cc_binary( - name = "udp_bind_test", - testonly = 1, - srcs = ["udp_bind.cc"], - linkstatic = 1, - deps = [ - ":socket_test_util", - "//test/util:file_descriptor", - gtest, - "//test/util:test_main", - "//test/util:test_util", - ], -) - -cc_binary( - name = "uidgid_test", - testonly = 1, - srcs = ["uidgid.cc"], - linkstatic = 1, - deps = [ - "//test/util:capability_util", - "@com_google_absl//absl/flags:flag", - "@com_google_absl//absl/strings", - gtest, - "//test/util:posix_error", - "//test/util:test_main", - "//test/util:test_util", - "//test/util:thread_util", - "//test/util:uid_util", - ], -) - -cc_binary( - name = "uname_test", - testonly = 1, - srcs = ["uname.cc"], - linkstatic = 1, - deps = [ - "//test/util:capability_util", - "@com_google_absl//absl/strings", - gtest, - "//test/util:test_main", - "//test/util:test_util", - "//test/util:thread_util", - ], -) - -cc_binary( - name = "unlink_test", - testonly = 1, - srcs = ["unlink.cc"], - linkstatic = 1, - deps = [ - "//test/util:capability_util", - "//test/util:file_descriptor", - "//test/util:fs_util", - "@com_google_absl//absl/strings", - gtest, - "//test/util:temp_path", - "//test/util:test_main", - "//test/util:test_util", - ], -) - -cc_binary( - name = "unshare_test", - testonly = 1, - srcs = ["unshare.cc"], - linkstatic = 1, - deps = [ - "@com_google_absl//absl/synchronization", - gtest, - "//test/util:test_main", - "//test/util:test_util", - "//test/util:thread_util", - ], -) - -cc_binary( - name = "utimes_test", - testonly = 1, - srcs = ["utimes.cc"], - linkstatic = 1, - deps = [ - "//test/util:file_descriptor", - "//test/util:fs_util", - "//test/util:temp_path", - "//test/util:test_main", - "//test/util:test_util", - "@com_google_absl//absl/time", - ], -) - -cc_binary( - name = "vdso_test", - testonly = 1, - srcs = ["vdso.cc"], - linkstatic = 1, - deps = [ - "//test/util:fs_util", - gtest, - "//test/util:posix_error", - "//test/util:proc_util", - "//test/util:test_main", - "//test/util:test_util", - ], -) - -cc_binary( - name = "vfork_test", - testonly = 1, - srcs = ["vfork.cc"], - linkstatic = 1, - deps = [ - "@com_google_absl//absl/flags:flag", - "@com_google_absl//absl/time", - gtest, - "//test/util:logging", - "//test/util:multiprocess_util", - "//test/util:test_util", - "//test/util:time_util", - ], -) - -cc_binary( - name = "wait_test", - testonly = 1, - srcs = ["wait.cc"], - linkstatic = 1, - deps = [ - "//test/util:cleanup", - "//test/util:file_descriptor", - "@com_google_absl//absl/strings", - "@com_google_absl//absl/synchronization", - "@com_google_absl//absl/time", - gtest, - "//test/util:logging", - "//test/util:multiprocess_util", - "//test/util:posix_error", - "//test/util:signal_util", - "//test/util:test_main", - "//test/util:test_util", - "//test/util:thread_util", - "//test/util:time_util", - ], -) - -cc_binary( - name = "write_test", - testonly = 1, - srcs = ["write.cc"], - linkstatic = 1, - deps = [ - "//test/util:cleanup", - gtest, - "//test/util:temp_path", - "//test/util:test_main", - "//test/util:test_util", - ], -) - -cc_binary( - name = "memory_accounting_test", - testonly = 1, - srcs = ["memory_accounting.cc"], - linkstatic = 1, - deps = [ - "//test/util:fs_util", - "@com_google_absl//absl/strings", - "@com_google_absl//absl/strings:str_format", - gtest, - "//test/util:posix_error", - "//test/util:test_main", - "//test/util:test_util", - ], -) - -cc_binary( - name = "semaphore_test", - testonly = 1, - srcs = ["semaphore.cc"], - linkstatic = 1, - deps = [ - "//test/util:capability_util", - "@com_google_absl//absl/base:core_headers", - "@com_google_absl//absl/memory", - "@com_google_absl//absl/synchronization", - "@com_google_absl//absl/time", - gtest, - "//test/util:test_main", - "//test/util:test_util", - "//test/util:thread_util", - ], -) - -cc_binary( - name = "shm_test", - testonly = 1, - srcs = ["shm.cc"], - linkstatic = 1, - deps = [ - "//test/util:multiprocess_util", - "//test/util:posix_error", - "//test/util:temp_path", - "//test/util:test_main", - "//test/util:test_util", - "@com_google_absl//absl/time", - ], -) - -cc_binary( - name = "fadvise64_test", - testonly = 1, - srcs = ["fadvise64.cc"], - linkstatic = 1, - deps = [ - "//test/util:file_descriptor", - gtest, - "//test/util:temp_path", - "//test/util:test_main", - "//test/util:test_util", - ], -) - -cc_binary( - name = "vdso_clock_gettime_test", - testonly = 1, - srcs = ["vdso_clock_gettime.cc"], - linkstatic = 1, - deps = [ - "@com_google_absl//absl/strings", - "@com_google_absl//absl/time", - gtest, - "//test/util:test_main", - "//test/util:test_util", - ], -) - -cc_binary( - name = "vsyscall_test", - testonly = 1, - srcs = ["vsyscall.cc"], - linkstatic = 1, - deps = [ - gtest, - "//test/util:proc_util", - "//test/util:test_main", - "//test/util:test_util", - ], -) - -cc_binary( - name = "proc_net_unix_test", - testonly = 1, - srcs = ["proc_net_unix.cc"], - linkstatic = 1, - deps = [ - ":unix_domain_socket_test_util", - "//test/util:file_descriptor", - "//test/util:fs_util", - "@com_google_absl//absl/strings", - "@com_google_absl//absl/strings:str_format", - gtest, - "//test/util:test_main", - "//test/util:test_util", - ], -) - -cc_binary( - name = "memfd_test", - testonly = 1, - srcs = ["memfd.cc"], - linkstatic = 1, - deps = [ - "//test/util:file_descriptor", - "//test/util:fs_util", - gtest, - "//test/util:memory_util", - "//test/util:multiprocess_util", - "//test/util:temp_path", - "//test/util:test_main", - "//test/util:test_util", - ], -) - -cc_binary( - name = "proc_net_tcp_test", - testonly = 1, - srcs = ["proc_net_tcp.cc"], - linkstatic = 1, - deps = [ - ":ip_socket_test_util", - "//test/util:file_descriptor", - "@com_google_absl//absl/strings", - gtest, - "//test/util:test_main", - "//test/util:test_util", - ], -) - -cc_binary( - name = "proc_net_udp_test", - testonly = 1, - srcs = ["proc_net_udp.cc"], - linkstatic = 1, - deps = [ - ":ip_socket_test_util", - "//test/util:file_descriptor", - "@com_google_absl//absl/strings", - gtest, - "//test/util:test_main", - "//test/util:test_util", - ], -) - -cc_binary( - name = "xattr_test", - testonly = 1, - srcs = [ - "file_base.h", - "xattr.cc", - ], - linkstatic = 1, - deps = [ - "//test/util:capability_util", - "//test/util:file_descriptor", - "//test/util:fs_util", - "@com_google_absl//absl/container:flat_hash_set", - "@com_google_absl//absl/strings", - gtest, - "//test/util:posix_error", - "//test/util:temp_path", - "//test/util:test_main", - "//test/util:test_util", - ], -) diff --git a/test/syscalls/linux/accept_bind.cc b/test/syscalls/linux/accept_bind.cc deleted file mode 100644 index e08c578f0..000000000 --- a/test/syscalls/linux/accept_bind.cc +++ /dev/null @@ -1,599 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <stdio.h> -#include <sys/un.h> - -#include <algorithm> -#include <vector> - -#include "gtest/gtest.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -TEST_P(AllSocketPairTest, Listen) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - ASSERT_THAT(listen(sockets->first_fd(), /* backlog = */ 5), - SyscallSucceeds()); -} - -TEST_P(AllSocketPairTest, ListenIncreaseBacklog) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - ASSERT_THAT(listen(sockets->first_fd(), /* backlog = */ 5), - SyscallSucceeds()); - ASSERT_THAT(listen(sockets->first_fd(), /* backlog = */ 10), - SyscallSucceeds()); -} - -TEST_P(AllSocketPairTest, ListenDecreaseBacklog) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - ASSERT_THAT(listen(sockets->first_fd(), /* backlog = */ 5), - SyscallSucceeds()); - ASSERT_THAT(listen(sockets->first_fd(), /* backlog = */ 1), - SyscallSucceeds()); -} - -TEST_P(AllSocketPairTest, ListenWithoutBind) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - ASSERT_THAT(listen(sockets->first_fd(), 0), SyscallFailsWithErrno(EINVAL)); -} - -TEST_P(AllSocketPairTest, DoubleBind) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->second_addr(), - sockets->second_addr_size()), - SyscallFailsWithErrno(EINVAL)); -} - -TEST_P(AllSocketPairTest, BindListenBind) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - ASSERT_THAT(listen(sockets->first_fd(), 5), SyscallSucceeds()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->second_addr(), - sockets->second_addr_size()), - SyscallFailsWithErrno(EINVAL)); -} - -TEST_P(AllSocketPairTest, DoubleListen) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - ASSERT_THAT(listen(sockets->first_fd(), 5), SyscallSucceeds()); - - ASSERT_THAT(listen(sockets->first_fd(), 5), SyscallSucceeds()); -} - -TEST_P(AllSocketPairTest, DoubleConnect) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - ASSERT_THAT(listen(sockets->first_fd(), 5), SyscallSucceeds()); - - ASSERT_THAT(connect(sockets->second_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - ASSERT_THAT(connect(sockets->second_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallFailsWithErrno(EISCONN)); -} - -TEST_P(AllSocketPairTest, Connect) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - ASSERT_THAT(listen(sockets->first_fd(), 5), SyscallSucceeds()); - - ASSERT_THAT(connect(sockets->second_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); -} - -TEST_P(AllSocketPairTest, ConnectNonListening) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - ASSERT_THAT(connect(sockets->second_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallFailsWithErrno(ECONNREFUSED)); -} - -TEST_P(AllSocketPairTest, ConnectToFilePath) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - struct sockaddr_un addr = {}; - addr.sun_family = AF_UNIX; - constexpr char kPath[] = "/tmp"; - memcpy(addr.sun_path, kPath, sizeof(kPath)); - - ASSERT_THAT( - connect(sockets->second_fd(), - reinterpret_cast<const struct sockaddr*>(&addr), sizeof(addr)), - SyscallFailsWithErrno(ECONNREFUSED)); -} - -TEST_P(AllSocketPairTest, ConnectToInvalidAbstractPath) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - struct sockaddr_un addr = {}; - addr.sun_family = AF_UNIX; - constexpr char kPath[] = "\0nonexistent"; - memcpy(addr.sun_path, kPath, sizeof(kPath)); - - ASSERT_THAT( - connect(sockets->second_fd(), - reinterpret_cast<const struct sockaddr*>(&addr), sizeof(addr)), - SyscallFailsWithErrno(ECONNREFUSED)); -} - -TEST_P(AllSocketPairTest, SelfConnect) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - ASSERT_THAT(listen(sockets->first_fd(), 5), SyscallSucceeds()); - - ASSERT_THAT(connect(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallFailsWithErrno(EINVAL)); -} - -TEST_P(AllSocketPairTest, ConnectWithoutListen) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - ASSERT_THAT(connect(sockets->second_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallFailsWithErrno(ECONNREFUSED)); -} - -TEST_P(AllSocketPairTest, Accept) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - ASSERT_THAT(listen(sockets->first_fd(), 5), SyscallSucceeds()); - - ASSERT_THAT(connect(sockets->second_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - int accepted = -1; - ASSERT_THAT(accepted = accept(sockets->first_fd(), nullptr, nullptr), - SyscallSucceeds()); - ASSERT_THAT(close(accepted), SyscallSucceeds()); -} - -TEST_P(AllSocketPairTest, AcceptValidAddrLen) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - ASSERT_THAT(listen(sockets->first_fd(), 5), SyscallSucceeds()); - - ASSERT_THAT(connect(sockets->second_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - int accepted = -1; - struct sockaddr_un addr = {}; - socklen_t addr_len = sizeof(addr); - ASSERT_THAT( - accepted = accept(sockets->first_fd(), - reinterpret_cast<struct sockaddr*>(&addr), &addr_len), - SyscallSucceeds()); - ASSERT_THAT(close(accepted), SyscallSucceeds()); -} - -TEST_P(AllSocketPairTest, AcceptNegativeAddrLen) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - ASSERT_THAT(listen(sockets->first_fd(), 5), SyscallSucceeds()); - - ASSERT_THAT(connect(sockets->second_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - // With a negative addr_len, accept returns EINVAL, - struct sockaddr_un addr = {}; - socklen_t addr_len = -1; - ASSERT_THAT(accept(sockets->first_fd(), - reinterpret_cast<struct sockaddr*>(&addr), &addr_len), - SyscallFailsWithErrno(EINVAL)); -} - -TEST_P(AllSocketPairTest, AcceptLargePositiveAddrLen) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - ASSERT_THAT(listen(sockets->first_fd(), 5), SyscallSucceeds()); - - ASSERT_THAT(connect(sockets->second_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - // With a large (positive) addr_len, accept does not return EINVAL. - int accepted = -1; - char addr_buf[200]; - socklen_t addr_len = sizeof(addr_buf); - ASSERT_THAT(accepted = accept(sockets->first_fd(), - reinterpret_cast<struct sockaddr*>(addr_buf), - &addr_len), - SyscallSucceeds()); - // addr_len should have been updated by accept(). - EXPECT_LT(addr_len, sizeof(addr_buf)); - ASSERT_THAT(close(accepted), SyscallSucceeds()); -} - -TEST_P(AllSocketPairTest, AcceptVeryLargePositiveAddrLen) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - ASSERT_THAT(listen(sockets->first_fd(), 5), SyscallSucceeds()); - - ASSERT_THAT(connect(sockets->second_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - // With a large (positive) addr_len, accept does not return EINVAL. - int accepted = -1; - char addr_buf[2000]; - socklen_t addr_len = sizeof(addr_buf); - ASSERT_THAT(accepted = accept(sockets->first_fd(), - reinterpret_cast<struct sockaddr*>(addr_buf), - &addr_len), - SyscallSucceeds()); - // addr_len should have been updated by accept(). - EXPECT_LT(addr_len, sizeof(addr_buf)); - ASSERT_THAT(close(accepted), SyscallSucceeds()); -} - -TEST_P(AllSocketPairTest, AcceptWithoutBind) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(accept(sockets->first_fd(), nullptr, nullptr), - SyscallFailsWithErrno(EINVAL)); -} - -TEST_P(AllSocketPairTest, AcceptWithoutListen) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - ASSERT_THAT(accept(sockets->first_fd(), nullptr, nullptr), - SyscallFailsWithErrno(EINVAL)); -} - -TEST_P(AllSocketPairTest, GetRemoteAddress) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - ASSERT_THAT(listen(sockets->first_fd(), 5), SyscallSucceeds()); - - ASSERT_THAT(connect(sockets->second_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - socklen_t addr_len = sockets->first_addr_size(); - struct sockaddr_storage addr = {}; - ASSERT_THAT( - getpeername(sockets->second_fd(), (struct sockaddr*)(&addr), &addr_len), - SyscallSucceeds()); - EXPECT_EQ(addr_len, sockets->first_addr_len()); - EXPECT_EQ(0, memcmp(&addr, sockets->first_addr(), sockets->first_addr_len())); -} - -TEST_P(AllSocketPairTest, UnboundGetLocalAddress) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - ASSERT_THAT(listen(sockets->first_fd(), 5), SyscallSucceeds()); - - ASSERT_THAT(connect(sockets->second_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - socklen_t addr_len = sockets->first_addr_size(); - struct sockaddr_storage addr = {}; - ASSERT_THAT( - getsockname(sockets->second_fd(), (struct sockaddr*)(&addr), &addr_len), - SyscallSucceeds()); - EXPECT_EQ(addr_len, 2); - EXPECT_EQ( - memcmp(&addr, sockets->second_addr(), - std::min((size_t)addr_len, (size_t)sockets->second_addr_len())), - 0); -} - -TEST_P(AllSocketPairTest, BoundGetLocalAddress) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - ASSERT_THAT(listen(sockets->first_fd(), 5), SyscallSucceeds()); - - ASSERT_THAT(bind(sockets->second_fd(), sockets->second_addr(), - sockets->second_addr_size()), - SyscallSucceeds()); - - ASSERT_THAT(connect(sockets->second_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - socklen_t addr_len = sockets->first_addr_size(); - struct sockaddr_storage addr = {}; - ASSERT_THAT( - getsockname(sockets->second_fd(), (struct sockaddr*)(&addr), &addr_len), - SyscallSucceeds()); - EXPECT_EQ(addr_len, sockets->second_addr_len()); - EXPECT_EQ( - memcmp(&addr, sockets->second_addr(), - std::min((size_t)addr_len, (size_t)sockets->second_addr_len())), - 0); -} - -TEST_P(AllSocketPairTest, BoundConnector) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - ASSERT_THAT(listen(sockets->first_fd(), 5), SyscallSucceeds()); - - ASSERT_THAT(bind(sockets->second_fd(), sockets->second_addr(), - sockets->second_addr_size()), - SyscallSucceeds()); - - ASSERT_THAT(connect(sockets->second_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); -} - -TEST_P(AllSocketPairTest, UnboundSenderAddr) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - ASSERT_THAT(listen(sockets->first_fd(), 5), SyscallSucceeds()); - - ASSERT_THAT(connect(sockets->second_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - int accepted = -1; - ASSERT_THAT(accepted = accept(sockets->first_fd(), nullptr, nullptr), - SyscallSucceeds()); - FileDescriptor accepted_fd(accepted); - - int i = 0; - ASSERT_THAT(RetryEINTR(send)(sockets->second_fd(), &i, sizeof(i), 0), - SyscallSucceedsWithValue(sizeof(i))); - - struct sockaddr_storage addr; - socklen_t addr_len = sizeof(addr); - ASSERT_THAT( - RetryEINTR(recvfrom)(accepted_fd.get(), &i, sizeof(i), 0, - reinterpret_cast<sockaddr*>(&addr), &addr_len), - SyscallSucceedsWithValue(sizeof(i))); - EXPECT_EQ(addr_len, 0); -} - -TEST_P(AllSocketPairTest, BoundSenderAddr) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - ASSERT_THAT(listen(sockets->first_fd(), 5), SyscallSucceeds()); - - ASSERT_THAT(bind(sockets->second_fd(), sockets->second_addr(), - sockets->second_addr_size()), - SyscallSucceeds()); - - ASSERT_THAT(connect(sockets->second_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - int accepted = -1; - ASSERT_THAT(accepted = accept(sockets->first_fd(), nullptr, nullptr), - SyscallSucceeds()); - FileDescriptor accepted_fd(accepted); - - int i = 0; - ASSERT_THAT(RetryEINTR(send)(sockets->second_fd(), &i, sizeof(i), 0), - SyscallSucceedsWithValue(sizeof(i))); - - struct sockaddr_storage addr; - socklen_t addr_len = sizeof(addr); - ASSERT_THAT( - RetryEINTR(recvfrom)(accepted_fd.get(), &i, sizeof(i), 0, - reinterpret_cast<sockaddr*>(&addr), &addr_len), - SyscallSucceedsWithValue(sizeof(i))); - EXPECT_EQ(addr_len, sockets->second_addr_len()); - EXPECT_EQ( - memcmp(&addr, sockets->second_addr(), - std::min((size_t)addr_len, (size_t)sockets->second_addr_len())), - 0); -} - -TEST_P(AllSocketPairTest, BindAfterConnectSenderAddr) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - ASSERT_THAT(listen(sockets->first_fd(), 5), SyscallSucceeds()); - - ASSERT_THAT(connect(sockets->second_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - ASSERT_THAT(bind(sockets->second_fd(), sockets->second_addr(), - sockets->second_addr_size()), - SyscallSucceeds()); - - int accepted = -1; - ASSERT_THAT(accepted = accept(sockets->first_fd(), nullptr, nullptr), - SyscallSucceeds()); - FileDescriptor accepted_fd(accepted); - - int i = 0; - ASSERT_THAT(RetryEINTR(send)(sockets->second_fd(), &i, sizeof(i), 0), - SyscallSucceedsWithValue(sizeof(i))); - - struct sockaddr_storage addr; - socklen_t addr_len = sizeof(addr); - ASSERT_THAT( - RetryEINTR(recvfrom)(accepted_fd.get(), &i, sizeof(i), 0, - reinterpret_cast<sockaddr*>(&addr), &addr_len), - SyscallSucceedsWithValue(sizeof(i))); - EXPECT_EQ(addr_len, sockets->second_addr_len()); - EXPECT_EQ( - memcmp(&addr, sockets->second_addr(), - std::min((size_t)addr_len, (size_t)sockets->second_addr_len())), - 0); -} - -TEST_P(AllSocketPairTest, BindAfterAcceptSenderAddr) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - ASSERT_THAT(listen(sockets->first_fd(), 5), SyscallSucceeds()); - - ASSERT_THAT(connect(sockets->second_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - int accepted = -1; - ASSERT_THAT(accepted = accept(sockets->first_fd(), nullptr, nullptr), - SyscallSucceeds()); - FileDescriptor accepted_fd(accepted); - - ASSERT_THAT(bind(sockets->second_fd(), sockets->second_addr(), - sockets->second_addr_size()), - SyscallSucceeds()); - - int i = 0; - ASSERT_THAT(RetryEINTR(send)(sockets->second_fd(), &i, sizeof(i), 0), - SyscallSucceedsWithValue(sizeof(i))); - - struct sockaddr_storage addr; - socklen_t addr_len = sizeof(addr); - ASSERT_THAT( - RetryEINTR(recvfrom)(accepted_fd.get(), &i, sizeof(i), 0, - reinterpret_cast<sockaddr*>(&addr), &addr_len), - SyscallSucceedsWithValue(sizeof(i))); - EXPECT_EQ(addr_len, sockets->second_addr_len()); - EXPECT_EQ( - memcmp(&addr, sockets->second_addr(), - std::min((size_t)addr_len, (size_t)sockets->second_addr_len())), - 0); -} - -INSTANTIATE_TEST_SUITE_P( - AllUnixDomainSockets, AllSocketPairTest, - ::testing::ValuesIn(VecCat<SocketPairKind>( - ApplyVec<SocketPairKind>( - FilesystemUnboundUnixDomainSocketPair, - AllBitwiseCombinations(List<int>{SOCK_STREAM, SOCK_SEQPACKET}, - List<int>{0, SOCK_NONBLOCK})), - ApplyVec<SocketPairKind>( - AbstractUnboundUnixDomainSocketPair, - AllBitwiseCombinations(List<int>{SOCK_STREAM, SOCK_SEQPACKET}, - List<int>{0, SOCK_NONBLOCK}))))); - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/accept_bind_stream.cc b/test/syscalls/linux/accept_bind_stream.cc deleted file mode 100644 index 4857f160b..000000000 --- a/test/syscalls/linux/accept_bind_stream.cc +++ /dev/null @@ -1,92 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <stdio.h> -#include <sys/un.h> - -#include <algorithm> -#include <vector> - -#include "gtest/gtest.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -TEST_P(AllSocketPairTest, BoundSenderAddrCoalesced) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - ASSERT_THAT(listen(sockets->first_fd(), 5), SyscallSucceeds()); - - ASSERT_THAT(connect(sockets->second_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - int accepted = -1; - ASSERT_THAT(accepted = accept(sockets->first_fd(), nullptr, nullptr), - SyscallSucceeds()); - FileDescriptor closer(accepted); - - int i = 0; - ASSERT_THAT(RetryEINTR(send)(sockets->second_fd(), &i, sizeof(i), 0), - SyscallSucceedsWithValue(sizeof(i))); - - ASSERT_THAT(bind(sockets->second_fd(), sockets->second_addr(), - sockets->second_addr_size()), - SyscallSucceeds()); - - i = 0; - ASSERT_THAT(RetryEINTR(send)(sockets->second_fd(), &i, sizeof(i), 0), - SyscallSucceedsWithValue(sizeof(i))); - - int ri[2] = {0, 0}; - struct sockaddr_storage addr; - socklen_t addr_len = sizeof(addr); - ASSERT_THAT( - RetryEINTR(recvfrom)(accepted, ri, sizeof(ri), 0, - reinterpret_cast<sockaddr*>(&addr), &addr_len), - SyscallSucceedsWithValue(sizeof(ri))); - EXPECT_EQ(addr_len, sockets->second_addr_len()); - - EXPECT_EQ( - memcmp(&addr, sockets->second_addr(), - std::min((size_t)addr_len, (size_t)sockets->second_addr_len())), - 0); -} - -INSTANTIATE_TEST_SUITE_P( - AllUnixDomainSockets, AllSocketPairTest, - ::testing::ValuesIn(VecCat<SocketPairKind>( - ApplyVec<SocketPairKind>(FilesystemUnboundUnixDomainSocketPair, - AllBitwiseCombinations(List<int>{SOCK_STREAM}, - List<int>{ - 0, SOCK_NONBLOCK})), - ApplyVec<SocketPairKind>( - AbstractUnboundUnixDomainSocketPair, - AllBitwiseCombinations(List<int>{SOCK_STREAM}, - List<int>{0, SOCK_NONBLOCK}))))); - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/access.cc b/test/syscalls/linux/access.cc deleted file mode 100644 index bcc25cef4..000000000 --- a/test/syscalls/linux/access.cc +++ /dev/null @@ -1,170 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <fcntl.h> -#include <stdlib.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "test/util/capability_util.h" -#include "test/util/fs_util.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -using ::testing::Ge; - -namespace gvisor { -namespace testing { - -namespace { - -class AccessTest : public ::testing::Test { - public: - std::string CreateTempFile(int perm) { - const std::string path = NewTempAbsPath(); - const int fd = open(path.c_str(), O_CREAT | O_RDONLY, perm); - TEST_PCHECK(fd > 0); - TEST_PCHECK(close(fd) == 0); - return path; - } - - protected: - // SetUp creates various configurations of files. - void SetUp() override { - // Move to the temporary directory. This allows us to reason more easily - // about absolute and relative paths. - ASSERT_THAT(chdir(GetAbsoluteTestTmpdir().c_str()), SyscallSucceeds()); - - // Create an empty file, standard permissions. - relfile_ = NewTempRelPath(); - int fd; - ASSERT_THAT(fd = open(relfile_.c_str(), O_CREAT | O_TRUNC, 0644), - SyscallSucceedsWithValue(Ge(0))); - ASSERT_THAT(close(fd), SyscallSucceeds()); - absfile_ = GetAbsoluteTestTmpdir() + "/" + relfile_; - - // Create an empty directory, no writable permissions. - absdir_ = NewTempAbsPath(); - reldir_ = JoinPath(Basename(absdir_), ""); - ASSERT_THAT(mkdir(reldir_.c_str(), 0555), SyscallSucceeds()); - - // This file doesn't exist. - relnone_ = NewTempRelPath(); - absnone_ = GetAbsoluteTestTmpdir() + "/" + relnone_; - } - - // TearDown unlinks created files. - void TearDown() override { - ASSERT_THAT(unlink(absfile_.c_str()), SyscallSucceeds()); - ASSERT_THAT(rmdir(absdir_.c_str()), SyscallSucceeds()); - } - - std::string relfile_; - std::string reldir_; - - std::string absfile_; - std::string absdir_; - - std::string relnone_; - std::string absnone_; -}; - -TEST_F(AccessTest, RelativeFile) { - EXPECT_THAT(access(relfile_.c_str(), R_OK), SyscallSucceeds()); -} - -TEST_F(AccessTest, RelativeDir) { - EXPECT_THAT(access(reldir_.c_str(), R_OK | X_OK), SyscallSucceeds()); -} - -TEST_F(AccessTest, AbsFile) { - EXPECT_THAT(access(absfile_.c_str(), R_OK), SyscallSucceeds()); -} - -TEST_F(AccessTest, AbsDir) { - EXPECT_THAT(access(absdir_.c_str(), R_OK | X_OK), SyscallSucceeds()); -} - -TEST_F(AccessTest, RelDoesNotExist) { - EXPECT_THAT(access(relnone_.c_str(), R_OK), SyscallFailsWithErrno(ENOENT)); -} - -TEST_F(AccessTest, AbsDoesNotExist) { - EXPECT_THAT(access(absnone_.c_str(), R_OK), SyscallFailsWithErrno(ENOENT)); -} - -TEST_F(AccessTest, InvalidMode) { - EXPECT_THAT(access(relfile_.c_str(), 0xffffffff), - SyscallFailsWithErrno(EINVAL)); -} - -TEST_F(AccessTest, NoPerms) { - // Drop capabilities that allow us to override permissions. We must drop - // PERMITTED because access() checks those instead of EFFECTIVE. - ASSERT_NO_ERRNO(DropPermittedCapability(CAP_DAC_OVERRIDE)); - ASSERT_NO_ERRNO(DropPermittedCapability(CAP_DAC_READ_SEARCH)); - - EXPECT_THAT(access(absdir_.c_str(), W_OK), SyscallFailsWithErrno(EACCES)); -} - -TEST_F(AccessTest, InvalidName) { - EXPECT_THAT(access(reinterpret_cast<char*>(0x1234), W_OK), - SyscallFailsWithErrno(EFAULT)); -} - -TEST_F(AccessTest, UsrReadOnly) { - // Drop capabilities that allow us to override permissions. We must drop - // PERMITTED because access() checks those instead of EFFECTIVE. - ASSERT_NO_ERRNO(DropPermittedCapability(CAP_DAC_OVERRIDE)); - ASSERT_NO_ERRNO(DropPermittedCapability(CAP_DAC_READ_SEARCH)); - - const std::string filename = CreateTempFile(0400); - EXPECT_THAT(access(filename.c_str(), R_OK), SyscallSucceeds()); - EXPECT_THAT(access(filename.c_str(), W_OK), SyscallFailsWithErrno(EACCES)); - EXPECT_THAT(access(filename.c_str(), X_OK), SyscallFailsWithErrno(EACCES)); - EXPECT_THAT(unlink(filename.c_str()), SyscallSucceeds()); -} - -TEST_F(AccessTest, UsrReadExec) { - // Drop capabilities that allow us to override permissions. We must drop - // PERMITTED because access() checks those instead of EFFECTIVE. - ASSERT_NO_ERRNO(DropPermittedCapability(CAP_DAC_OVERRIDE)); - ASSERT_NO_ERRNO(DropPermittedCapability(CAP_DAC_READ_SEARCH)); - - const std::string filename = CreateTempFile(0500); - EXPECT_THAT(access(filename.c_str(), R_OK | X_OK), SyscallSucceeds()); - EXPECT_THAT(access(filename.c_str(), W_OK), SyscallFailsWithErrno(EACCES)); - EXPECT_THAT(unlink(filename.c_str()), SyscallSucceeds()); -} - -TEST_F(AccessTest, UsrReadWrite) { - const std::string filename = CreateTempFile(0600); - EXPECT_THAT(access(filename.c_str(), R_OK | W_OK), SyscallSucceeds()); - EXPECT_THAT(access(filename.c_str(), X_OK), SyscallFailsWithErrno(EACCES)); - EXPECT_THAT(unlink(filename.c_str()), SyscallSucceeds()); -} - -TEST_F(AccessTest, UsrReadWriteExec) { - const std::string filename = CreateTempFile(0700); - EXPECT_THAT(access(filename.c_str(), R_OK | W_OK | X_OK), SyscallSucceeds()); - EXPECT_THAT(unlink(filename.c_str()), SyscallSucceeds()); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/affinity.cc b/test/syscalls/linux/affinity.cc deleted file mode 100644 index 128364c34..000000000 --- a/test/syscalls/linux/affinity.cc +++ /dev/null @@ -1,242 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <sched.h> -#include <sys/syscall.h> -#include <sys/types.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "absl/strings/str_split.h" -#include "test/util/cleanup.h" -#include "test/util/fs_util.h" -#include "test/util/posix_error.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { -namespace { - -// These tests are for both the sched_getaffinity(2) and sched_setaffinity(2) -// syscalls. -class AffinityTest : public ::testing::Test { - protected: - void SetUp() override { - EXPECT_THAT( - // Needs use the raw syscall to get the actual size. - cpuset_size_ = syscall(SYS_sched_getaffinity, /*pid=*/0, - sizeof(cpu_set_t), &mask_), - SyscallSucceeds()); - // Lots of tests rely on having more than 1 logical processor available. - EXPECT_GT(CPU_COUNT(&mask_), 1); - } - - static PosixError ClearLowestBit(cpu_set_t* mask, size_t cpus) { - const size_t mask_size = CPU_ALLOC_SIZE(cpus); - for (size_t n = 0; n < cpus; ++n) { - if (CPU_ISSET_S(n, mask_size, mask)) { - CPU_CLR_S(n, mask_size, mask); - return NoError(); - } - } - return PosixError(EINVAL, "No bit to clear, mask is empty"); - } - - PosixError ClearLowestBit() { return ClearLowestBit(&mask_, CPU_SETSIZE); } - - // Stores the initial cpu mask for this process. - cpu_set_t mask_ = {}; - int cpuset_size_ = 0; -}; - -// sched_getaffinity(2) is implemented. -TEST_F(AffinityTest, SchedGetAffinityImplemented) { - EXPECT_THAT(sched_getaffinity(/*pid=*/0, sizeof(cpu_set_t), &mask_), - SyscallSucceeds()); -} - -// PID is not found. -TEST_F(AffinityTest, SchedGetAffinityInvalidPID) { - // Flaky, but it's tough to avoid a race condition when finding an unused pid - EXPECT_THAT(sched_getaffinity(/*pid=*/INT_MAX - 1, sizeof(cpu_set_t), &mask_), - SyscallFailsWithErrno(ESRCH)); -} - -// PID is not found. -TEST_F(AffinityTest, SchedSetAffinityInvalidPID) { - // Flaky, but it's tough to avoid a race condition when finding an unused pid - EXPECT_THAT(sched_setaffinity(/*pid=*/INT_MAX - 1, sizeof(cpu_set_t), &mask_), - SyscallFailsWithErrno(ESRCH)); -} - -TEST_F(AffinityTest, SchedSetAffinityZeroMask) { - CPU_ZERO(&mask_); - EXPECT_THAT(sched_setaffinity(/*pid=*/0, sizeof(cpu_set_t), &mask_), - SyscallFailsWithErrno(EINVAL)); -} - -// N.B. This test case relies on cpuset_size_ larger than the actual number of -// of all existing CPUs. Check your machine if the test fails. -TEST_F(AffinityTest, SchedSetAffinityNonexistentCPUDropped) { - cpu_set_t mask = mask_; - // Add a nonexistent CPU. - // - // The number needs to be larger than the possible number of CPU available, - // but smaller than the number of the CPU that the kernel claims to support -- - // it's implicitly returned by raw sched_getaffinity syscall. - CPU_SET(cpuset_size_ * 8 - 1, &mask); - EXPECT_THAT( - // Use raw syscall because it will be rejected by the libc wrapper - // otherwise. - syscall(SYS_sched_setaffinity, /*pid=*/0, sizeof(cpu_set_t), &mask), - SyscallSucceeds()) - << "failed with cpumask : " << CPUSetToString(mask) - << ", cpuset_size_ : " << cpuset_size_; - cpu_set_t newmask; - EXPECT_THAT(sched_getaffinity(/*pid=*/0, sizeof(cpu_set_t), &newmask), - SyscallSucceeds()); - EXPECT_TRUE(CPU_EQUAL(&mask_, &newmask)) - << "got: " << CPUSetToString(newmask) - << " != expected: " << CPUSetToString(mask_); -} - -TEST_F(AffinityTest, SchedSetAffinityOnlyNonexistentCPUFails) { - // Make an empty cpu set. - CPU_ZERO(&mask_); - // Add a nonexistent CPU. - // - // The number needs to be larger than the possible number of CPU available, - // but smaller than the number of the CPU that the kernel claims to support -- - // it's implicitly returned by raw sched_getaffinity syscall. - int cpu = cpuset_size_ * 8 - 1; - if (cpu <= NumCPUs()) { - GTEST_SKIP() << "Skipping test: cpu " << cpu << " exists"; - } - CPU_SET(cpu, &mask_); - EXPECT_THAT( - // Use raw syscall because it will be rejected by the libc wrapper - // otherwise. - syscall(SYS_sched_setaffinity, /*pid=*/0, sizeof(cpu_set_t), &mask_), - SyscallFailsWithErrno(EINVAL)); -} - -TEST_F(AffinityTest, SchedSetAffinityInvalidSize) { - EXPECT_GT(cpuset_size_, 0); - // Not big enough. - EXPECT_THAT(sched_getaffinity(/*pid=*/0, cpuset_size_ - 1, &mask_), - SyscallFailsWithErrno(EINVAL)); - // Not a multiple of word size. - EXPECT_THAT(sched_getaffinity(/*pid=*/0, cpuset_size_ + 1, &mask_), - SyscallFailsWithErrno(EINVAL)); -} - -TEST_F(AffinityTest, Sanity) { - ASSERT_NO_ERRNO(ClearLowestBit()); - EXPECT_THAT(sched_setaffinity(/*pid=*/0, sizeof(cpu_set_t), &mask_), - SyscallSucceeds()); - cpu_set_t newmask; - EXPECT_THAT(sched_getaffinity(/*pid=*/0, sizeof(cpu_set_t), &newmask), - SyscallSucceeds()); - EXPECT_TRUE(CPU_EQUAL(&mask_, &newmask)) - << "got: " << CPUSetToString(newmask) - << " != expected: " << CPUSetToString(mask_); -} - -TEST_F(AffinityTest, NewThread) { - SKIP_IF(CPU_COUNT(&mask_) < 3); - ASSERT_NO_ERRNO(ClearLowestBit()); - ASSERT_NO_ERRNO(ClearLowestBit()); - EXPECT_THAT(sched_setaffinity(/*pid=*/0, sizeof(cpu_set_t), &mask_), - SyscallSucceeds()); - ScopedThread([this]() { - cpu_set_t child_mask; - ASSERT_THAT(sched_getaffinity(/*pid=*/0, sizeof(cpu_set_t), &child_mask), - SyscallSucceeds()); - ASSERT_TRUE(CPU_EQUAL(&child_mask, &mask_)) - << "child cpu mask: " << CPUSetToString(child_mask) - << " != parent cpu mask: " << CPUSetToString(mask_); - }); -} - -TEST_F(AffinityTest, ConsistentWithProcCpuInfo) { - // Count how many cpus are shown in /proc/cpuinfo. - std::string cpuinfo = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/cpuinfo")); - int count = 0; - for (auto const& line : absl::StrSplit(cpuinfo, '\n')) { - if (absl::StartsWith(line, "processor")) { - count++; - } - } - EXPECT_GE(count, CPU_COUNT(&mask_)); -} - -TEST_F(AffinityTest, ConsistentWithProcStat) { - // Count how many cpus are shown in /proc/stat. - std::string stat = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/stat")); - int count = 0; - for (auto const& line : absl::StrSplit(stat, '\n')) { - if (absl::StartsWith(line, "cpu") && !absl::StartsWith(line, "cpu ")) { - count++; - } - } - EXPECT_GE(count, CPU_COUNT(&mask_)); -} - -TEST_F(AffinityTest, SmallCpuMask) { - const int num_cpus = NumCPUs(); - const size_t mask_size = CPU_ALLOC_SIZE(num_cpus); - cpu_set_t* mask = CPU_ALLOC(num_cpus); - ASSERT_NE(mask, nullptr); - const auto free_mask = Cleanup([&] { CPU_FREE(mask); }); - - CPU_ZERO_S(mask_size, mask); - ASSERT_THAT(sched_getaffinity(0, mask_size, mask), SyscallSucceeds()); -} - -TEST_F(AffinityTest, LargeCpuMask) { - // Allocate mask bigger than cpu_set_t normally allocates. - const size_t cpus = CPU_SETSIZE * 8; - const size_t mask_size = CPU_ALLOC_SIZE(cpus); - - cpu_set_t* large_mask = CPU_ALLOC(cpus); - auto free_mask = Cleanup([large_mask] { CPU_FREE(large_mask); }); - CPU_ZERO_S(mask_size, large_mask); - - // Check that get affinity with large mask works as expected. - ASSERT_THAT(sched_getaffinity(/*pid=*/0, mask_size, large_mask), - SyscallSucceeds()); - EXPECT_TRUE(CPU_EQUAL(&mask_, large_mask)) - << "got: " << CPUSetToString(*large_mask, cpus) - << " != expected: " << CPUSetToString(mask_); - - // Check that set affinity with large mask works as expected. - ASSERT_NO_ERRNO(ClearLowestBit(large_mask, cpus)); - EXPECT_THAT(sched_setaffinity(/*pid=*/0, mask_size, large_mask), - SyscallSucceeds()); - - cpu_set_t* new_mask = CPU_ALLOC(cpus); - auto free_new_mask = Cleanup([new_mask] { CPU_FREE(new_mask); }); - CPU_ZERO_S(mask_size, new_mask); - EXPECT_THAT(sched_getaffinity(/*pid=*/0, mask_size, new_mask), - SyscallSucceeds()); - - EXPECT_TRUE(CPU_EQUAL_S(mask_size, large_mask, new_mask)) - << "got: " << CPUSetToString(*new_mask, cpus) - << " != expected: " << CPUSetToString(*large_mask, cpus); -} - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/aio.cc b/test/syscalls/linux/aio.cc deleted file mode 100644 index a33daff17..000000000 --- a/test/syscalls/linux/aio.cc +++ /dev/null @@ -1,424 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <fcntl.h> -#include <linux/aio_abi.h> -#include <sys/mman.h> -#include <sys/syscall.h> -#include <sys/types.h> -#include <unistd.h> - -#include <algorithm> -#include <string> - -#include "gtest/gtest.h" -#include "test/syscalls/linux/file_base.h" -#include "test/util/cleanup.h" -#include "test/util/file_descriptor.h" -#include "test/util/fs_util.h" -#include "test/util/memory_util.h" -#include "test/util/posix_error.h" -#include "test/util/proc_util.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -using ::testing::_; - -namespace gvisor { -namespace testing { -namespace { - -// Returns the size of the VMA containing the given address. -PosixErrorOr<size_t> VmaSizeAt(uintptr_t addr) { - ASSIGN_OR_RETURN_ERRNO(std::string proc_self_maps, - GetContents("/proc/self/maps")); - ASSIGN_OR_RETURN_ERRNO(auto entries, ParseProcMaps(proc_self_maps)); - // Use binary search to find the first VMA that might contain addr. - ProcMapsEntry target = {}; - target.end = addr; - auto it = - std::upper_bound(entries.begin(), entries.end(), target, - [](const ProcMapsEntry& x, const ProcMapsEntry& y) { - return x.end < y.end; - }); - // Check that it actually contains addr. - if (it == entries.end() || addr < it->start) { - return PosixError(ENOENT, absl::StrCat("no VMA contains address ", addr)); - } - return it->end - it->start; -} - -constexpr char kData[] = "hello world!"; - -int SubmitCtx(aio_context_t ctx, long nr, struct iocb** iocbpp) { - return syscall(__NR_io_submit, ctx, nr, iocbpp); -} - -class AIOTest : public FileTest { - public: - AIOTest() : ctx_(0) {} - - int SetupContext(unsigned int nr) { - return syscall(__NR_io_setup, nr, &ctx_); - } - - int Submit(long nr, struct iocb** iocbpp) { - return SubmitCtx(ctx_, nr, iocbpp); - } - - int GetEvents(long min, long max, struct io_event* events, - struct timespec* timeout) { - return RetryEINTR(syscall)(__NR_io_getevents, ctx_, min, max, events, - timeout); - } - - int DestroyContext() { return syscall(__NR_io_destroy, ctx_); } - - void TearDown() override { - FileTest::TearDown(); - if (ctx_ != 0) { - ASSERT_THAT(DestroyContext(), SyscallSucceeds()); - } - } - - struct iocb CreateCallback() { - struct iocb cb = {}; - cb.aio_data = 0x123; - cb.aio_fildes = test_file_fd_.get(); - cb.aio_lio_opcode = IOCB_CMD_PWRITE; - cb.aio_buf = reinterpret_cast<uint64_t>(kData); - cb.aio_offset = 0; - cb.aio_nbytes = strlen(kData); - return cb; - } - - protected: - aio_context_t ctx_; -}; - -TEST_F(AIOTest, BasicWrite) { - // Copied from fs/aio.c. - constexpr unsigned AIO_RING_MAGIC = 0xa10a10a1; - struct aio_ring { - unsigned id; - unsigned nr; - unsigned head; - unsigned tail; - unsigned magic; - unsigned compat_features; - unsigned incompat_features; - unsigned header_length; - struct io_event io_events[0]; - }; - - // Setup a context that is 128 entries deep. - ASSERT_THAT(SetupContext(128), SyscallSucceeds()); - - // Check that 'ctx_' points to a valid address. libaio uses it to check if - // aio implementation uses aio_ring. gVisor doesn't and returns all zeroes. - // Linux implements aio_ring, so skip the zeroes check. - // - // TODO(gvisor.dev/issue/204): Remove when gVisor implements aio_ring. - auto ring = reinterpret_cast<struct aio_ring*>(ctx_); - auto magic = IsRunningOnGvisor() ? 0 : AIO_RING_MAGIC; - EXPECT_EQ(ring->magic, magic); - - struct iocb cb = CreateCallback(); - struct iocb* cbs[1] = {&cb}; - - // Submit the request. - ASSERT_THAT(Submit(1, cbs), SyscallSucceedsWithValue(1)); - - // Get the reply. - struct io_event events[1]; - ASSERT_THAT(GetEvents(1, 1, events, nullptr), SyscallSucceedsWithValue(1)); - - // Verify that it is as expected. - EXPECT_EQ(events[0].data, 0x123); - EXPECT_EQ(events[0].obj, reinterpret_cast<long>(&cb)); - EXPECT_EQ(events[0].res, strlen(kData)); - - // Verify that the file contains the contents. - char verify_buf[sizeof(kData)] = {}; - ASSERT_THAT(read(test_file_fd_.get(), verify_buf, sizeof(kData)), - SyscallSucceedsWithValue(strlen(kData))); - EXPECT_STREQ(verify_buf, kData); -} - -TEST_F(AIOTest, BadWrite) { - // Create a pipe and immediately close the read end. - int pipefd[2]; - ASSERT_THAT(pipe(pipefd), SyscallSucceeds()); - - FileDescriptor rfd(pipefd[0]); - FileDescriptor wfd(pipefd[1]); - - rfd.reset(); // Close the read end. - - // Setup a context that is 128 entries deep. - ASSERT_THAT(SetupContext(128), SyscallSucceeds()); - - struct iocb cb = CreateCallback(); - // Try to write to the read end. - cb.aio_fildes = wfd.get(); - struct iocb* cbs[1] = {&cb}; - - // Submit the request. - ASSERT_THAT(Submit(1, cbs), SyscallSucceedsWithValue(1)); - - // Get the reply. - struct io_event events[1]; - ASSERT_THAT(GetEvents(1, 1, events, nullptr), SyscallSucceedsWithValue(1)); - - // Verify that it fails with the right error code. - EXPECT_EQ(events[0].data, 0x123); - EXPECT_EQ(events[0].obj, reinterpret_cast<uint64_t>(&cb)); - EXPECT_LT(events[0].res, 0); -} - -TEST_F(AIOTest, ExitWithPendingIo) { - // Setup a context that is 5 entries deep. - ASSERT_THAT(SetupContext(5), SyscallSucceeds()); - - struct iocb cb = CreateCallback(); - struct iocb* cbs[] = {&cb}; - - // Submit a request but don't complete it to make it pending. - EXPECT_THAT(Submit(1, cbs), SyscallSucceeds()); -} - -int Submitter(void* arg) { - auto test = reinterpret_cast<AIOTest*>(arg); - - struct iocb cb = test->CreateCallback(); - struct iocb* cbs[1] = {&cb}; - - // Submit the request. - TEST_CHECK(test->Submit(1, cbs) == 1); - return 0; -} - -TEST_F(AIOTest, CloneVm) { - // Setup a context that is 128 entries deep. - ASSERT_THAT(SetupContext(128), SyscallSucceeds()); - - const size_t kStackSize = 5 * kPageSize; - std::unique_ptr<char[]> stack(new char[kStackSize]); - char* bp = stack.get() + kStackSize; - pid_t child; - ASSERT_THAT(child = clone(Submitter, bp, CLONE_VM | SIGCHLD, - reinterpret_cast<void*>(this)), - SyscallSucceeds()); - - // Get the reply. - struct io_event events[1]; - ASSERT_THAT(GetEvents(1, 1, events, nullptr), SyscallSucceedsWithValue(1)); - - // Verify that it is as expected. - EXPECT_EQ(events[0].data, 0x123); - EXPECT_EQ(events[0].res, strlen(kData)); - - // Verify that the file contains the contents. - char verify_buf[32] = {}; - ASSERT_THAT(read(test_file_fd_.get(), &verify_buf[0], strlen(kData)), - SyscallSucceeds()); - EXPECT_EQ(strcmp(kData, &verify_buf[0]), 0); - - int status; - ASSERT_THAT(RetryEINTR(waitpid)(child, &status, 0), - SyscallSucceedsWithValue(child)); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << " status " << status; -} - -// Tests that AIO context can be remapped to a different address. -TEST_F(AIOTest, Mremap) { - // Setup a context that is 128 entries deep. - ASSERT_THAT(SetupContext(128), SyscallSucceeds()); - const size_t ctx_size = - ASSERT_NO_ERRNO_AND_VALUE(VmaSizeAt(reinterpret_cast<uintptr_t>(ctx_))); - - struct iocb cb = CreateCallback(); - struct iocb* cbs[1] = {&cb}; - - // Reserve address space for the mremap target so we have something safe to - // map over. - Mapping dst = - ASSERT_NO_ERRNO_AND_VALUE(MmapAnon(ctx_size, PROT_READ, MAP_PRIVATE)); - - // Remap context 'handle' to a different address. - ASSERT_THAT(Mremap(reinterpret_cast<void*>(ctx_), ctx_size, dst.len(), - MREMAP_FIXED | MREMAP_MAYMOVE, dst.ptr()), - IsPosixErrorOkAndHolds(dst.ptr())); - aio_context_t old_ctx = ctx_; - ctx_ = reinterpret_cast<aio_context_t>(dst.addr()); - // io_destroy() will unmap dst now. - dst.release(); - - // Check that submitting the request with the old 'ctx_' fails. - ASSERT_THAT(SubmitCtx(old_ctx, 1, cbs), SyscallFailsWithErrno(EINVAL)); - - // Submit the request with the new 'ctx_'. - ASSERT_THAT(Submit(1, cbs), SyscallSucceedsWithValue(1)); - - // Remap again. - dst = ASSERT_NO_ERRNO_AND_VALUE(MmapAnon(ctx_size, PROT_READ, MAP_PRIVATE)); - ASSERT_THAT(Mremap(reinterpret_cast<void*>(ctx_), ctx_size, dst.len(), - MREMAP_FIXED | MREMAP_MAYMOVE, dst.ptr()), - IsPosixErrorOkAndHolds(dst.ptr())); - ctx_ = reinterpret_cast<aio_context_t>(dst.addr()); - dst.release(); - - // Get the reply with yet another 'ctx_' and verify it. - struct io_event events[1]; - ASSERT_THAT(GetEvents(1, 1, events, nullptr), SyscallSucceedsWithValue(1)); - EXPECT_EQ(events[0].data, 0x123); - EXPECT_EQ(events[0].obj, reinterpret_cast<long>(&cb)); - EXPECT_EQ(events[0].res, strlen(kData)); - - // Verify that the file contains the contents. - char verify_buf[sizeof(kData)] = {}; - ASSERT_THAT(read(test_file_fd_.get(), verify_buf, sizeof(kData)), - SyscallSucceedsWithValue(strlen(kData))); - EXPECT_STREQ(verify_buf, kData); -} - -// Tests that AIO context cannot be expanded with mremap. -TEST_F(AIOTest, MremapExpansion) { - // Setup a context that is 128 entries deep. - ASSERT_THAT(SetupContext(128), SyscallSucceeds()); - const size_t ctx_size = - ASSERT_NO_ERRNO_AND_VALUE(VmaSizeAt(reinterpret_cast<uintptr_t>(ctx_))); - - // Reserve address space for the mremap target so we have something safe to - // map over. - Mapping dst = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(ctx_size + kPageSize, PROT_NONE, MAP_PRIVATE)); - - // Test that remapping to a larger address range fails. - ASSERT_THAT(Mremap(reinterpret_cast<void*>(ctx_), ctx_size, dst.len(), - MREMAP_FIXED | MREMAP_MAYMOVE, dst.ptr()), - PosixErrorIs(EFAULT, _)); - - // mm/mremap.c:sys_mremap() => mremap_to() does do_munmap() of the destination - // before it hits the VM_DONTEXPAND check in vma_to_resize(), so we should no - // longer munmap it (another thread may have created a mapping there). - dst.release(); -} - -// Tests that AIO calls fail if context's address is inaccessible. -TEST_F(AIOTest, Mprotect) { - // Setup a context that is 128 entries deep. - ASSERT_THAT(SetupContext(128), SyscallSucceeds()); - - struct iocb cb = CreateCallback(); - struct iocb* cbs[1] = {&cb}; - - ASSERT_THAT(Submit(1, cbs), SyscallSucceedsWithValue(1)); - - // Makes the context 'handle' inaccessible and check that all subsequent - // calls fail. - ASSERT_THAT(mprotect(reinterpret_cast<void*>(ctx_), kPageSize, PROT_NONE), - SyscallSucceeds()); - struct io_event events[1]; - EXPECT_THAT(GetEvents(1, 1, events, nullptr), SyscallFailsWithErrno(EINVAL)); - ASSERT_THAT(Submit(1, cbs), SyscallFailsWithErrno(EINVAL)); - EXPECT_THAT(DestroyContext(), SyscallFailsWithErrno(EINVAL)); - - // Prevent TearDown from attempting to destroy the context and fail. - ctx_ = 0; -} - -TEST_F(AIOTest, Timeout) { - // Setup a context that is 128 entries deep. - ASSERT_THAT(SetupContext(128), SyscallSucceeds()); - - struct timespec timeout; - timeout.tv_sec = 0; - timeout.tv_nsec = 10; - struct io_event events[1]; - ASSERT_THAT(GetEvents(1, 1, events, &timeout), SyscallSucceedsWithValue(0)); -} - -class AIOReadWriteParamTest : public AIOTest, - public ::testing::WithParamInterface<int> {}; - -TEST_P(AIOReadWriteParamTest, BadOffset) { - // Setup a context that is 128 entries deep. - ASSERT_THAT(SetupContext(128), SyscallSucceeds()); - - struct iocb cb = CreateCallback(); - struct iocb* cbs[1] = {&cb}; - - // Create a buffer that we can write to. - char buf[] = "hello world!"; - cb.aio_buf = reinterpret_cast<uint64_t>(buf); - - // Set the operation on the callback and give a negative offset. - const int opcode = GetParam(); - cb.aio_lio_opcode = opcode; - - iovec iov = {}; - if (opcode == IOCB_CMD_PREADV || opcode == IOCB_CMD_PWRITEV) { - // Create a valid iovec and set it in the callback. - iov.iov_base = reinterpret_cast<void*>(buf); - iov.iov_len = 1; - cb.aio_buf = reinterpret_cast<uint64_t>(&iov); - // aio_nbytes is the number of iovecs. - cb.aio_nbytes = 1; - } - - // Pass a negative offset. - cb.aio_offset = -1; - - // Should get error on submission. - ASSERT_THAT(Submit(1, cbs), SyscallFailsWithErrno(EINVAL)); -} - -INSTANTIATE_TEST_SUITE_P(BadOffset, AIOReadWriteParamTest, - ::testing::Values(IOCB_CMD_PREAD, IOCB_CMD_PWRITE, - IOCB_CMD_PREADV, IOCB_CMD_PWRITEV)); - -class AIOVectorizedParamTest : public AIOTest, - public ::testing::WithParamInterface<int> {}; - -TEST_P(AIOVectorizedParamTest, BadIOVecs) { - // Setup a context that is 128 entries deep. - ASSERT_THAT(SetupContext(128), SyscallSucceeds()); - - struct iocb cb = CreateCallback(); - struct iocb* cbs[1] = {&cb}; - - // Modify the callback to use the operation from the param. - cb.aio_lio_opcode = GetParam(); - - // Create an iovec with address in kernel range, and pass that as the buffer. - iovec iov = {}; - iov.iov_base = reinterpret_cast<void*>(0xFFFFFFFF00000000); - iov.iov_len = 1; - cb.aio_buf = reinterpret_cast<uint64_t>(&iov); - // aio_nbytes is the number of iovecs. - cb.aio_nbytes = 1; - - // Should get error on submission. - ASSERT_THAT(Submit(1, cbs), SyscallFailsWithErrno(EFAULT)); -} - -INSTANTIATE_TEST_SUITE_P(BadIOVecs, AIOVectorizedParamTest, - ::testing::Values(IOCB_CMD_PREADV, IOCB_CMD_PWRITEV)); - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/alarm.cc b/test/syscalls/linux/alarm.cc deleted file mode 100644 index d89269985..000000000 --- a/test/syscalls/linux/alarm.cc +++ /dev/null @@ -1,193 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <signal.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/util/file_descriptor.h" -#include "test/util/logging.h" -#include "test/util/signal_util.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -// N.B. Below, main blocks SIGALRM. Test cases must unblock it if they want -// delivery. - -void do_nothing_handler(int sig, siginfo_t* siginfo, void* arg) {} - -// No random save as the test relies on alarm timing. Cooperative save tests -// already cover the save between alarm and read. -TEST(AlarmTest, Interrupt_NoRandomSave) { - int pipe_fds[2]; - ASSERT_THAT(pipe(pipe_fds), SyscallSucceeds()); - - FileDescriptor read_fd(pipe_fds[0]); - FileDescriptor write_fd(pipe_fds[1]); - - // Use a signal handler that interrupts but does nothing rather than using the - // default terminate action. - struct sigaction sa; - sa.sa_sigaction = do_nothing_handler; - sigfillset(&sa.sa_mask); - sa.sa_flags = 0; - auto sa_cleanup = ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGALRM, sa)); - - // Actually allow SIGALRM delivery. - auto mask_cleanup = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_UNBLOCK, SIGALRM)); - - // Alarm in 20 second, which should be well after read blocks below. - ASSERT_THAT(alarm(20), SyscallSucceeds()); - - char buf; - ASSERT_THAT(read(read_fd.get(), &buf, 1), SyscallFailsWithErrno(EINTR)); -} - -/* Count of the number of SIGALARMS handled. */ -static volatile int alarms_received = 0; - -void inc_alarms_handler(int sig, siginfo_t* siginfo, void* arg) { - alarms_received++; -} - -// No random save as the test relies on alarm timing. Cooperative save tests -// already cover the save between alarm and read. -TEST(AlarmTest, Restart_NoRandomSave) { - alarms_received = 0; - - int pipe_fds[2]; - ASSERT_THAT(pipe(pipe_fds), SyscallSucceeds()); - - FileDescriptor read_fd(pipe_fds[0]); - // Write end closed by thread below. - - struct sigaction sa; - sa.sa_sigaction = inc_alarms_handler; - sigfillset(&sa.sa_mask); - sa.sa_flags = SA_RESTART; - auto sa_cleanup = ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGALRM, sa)); - - // Spawn a thread to eventually unblock the read below. - ScopedThread t([pipe_fds] { - absl::SleepFor(absl::Seconds(30)); - EXPECT_THAT(close(pipe_fds[1]), SyscallSucceeds()); - }); - - // Actually allow SIGALRM delivery. - auto mask_cleanup = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_UNBLOCK, SIGALRM)); - - // Alarm in 20 second, which should be well after read blocks below, but - // before it returns. - ASSERT_THAT(alarm(20), SyscallSucceeds()); - - // Read and eventually get an EOF from the writer closing. If SA_RESTART - // didn't work, then the alarm would not have fired and we wouldn't increment - // our alarms_received count in our signal handler, or we would have not - // restarted the syscall gracefully, which we expect below in order to be - // able to get the final EOF on the pipe. - char buf; - ASSERT_THAT(read(read_fd.get(), &buf, 1), SyscallSucceeds()); - EXPECT_EQ(alarms_received, 1); - - t.Join(); -} - -// No random save as the test relies on alarm timing. Cooperative save tests -// already cover the save between alarm and pause. -TEST(AlarmTest, SaSiginfo_NoRandomSave) { - // Use a signal handler that interrupts but does nothing rather than using the - // default terminate action. - struct sigaction sa; - sa.sa_sigaction = do_nothing_handler; - sigfillset(&sa.sa_mask); - sa.sa_flags = SA_SIGINFO; - auto sa_cleanup = ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGALRM, sa)); - - // Actually allow SIGALRM delivery. - auto mask_cleanup = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_UNBLOCK, SIGALRM)); - - // Alarm in 20 second, which should be well after pause blocks below. - ASSERT_THAT(alarm(20), SyscallSucceeds()); - ASSERT_THAT(pause(), SyscallFailsWithErrno(EINTR)); -} - -// No random save as the test relies on alarm timing. Cooperative save tests -// already cover the save between alarm and pause. -TEST(AlarmTest, SaInterrupt_NoRandomSave) { - // Use a signal handler that interrupts but does nothing rather than using the - // default terminate action. - struct sigaction sa; - sa.sa_sigaction = do_nothing_handler; - sigfillset(&sa.sa_mask); - sa.sa_flags = SA_INTERRUPT; - auto sa_cleanup = ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGALRM, sa)); - - // Actually allow SIGALRM delivery. - auto mask_cleanup = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_UNBLOCK, SIGALRM)); - - // Alarm in 20 second, which should be well after pause blocks below. - ASSERT_THAT(alarm(20), SyscallSucceeds()); - ASSERT_THAT(pause(), SyscallFailsWithErrno(EINTR)); -} - -TEST(AlarmTest, UserModeSpinning) { - alarms_received = 0; - - struct sigaction sa = {}; - sa.sa_sigaction = inc_alarms_handler; - sigfillset(&sa.sa_mask); - sa.sa_flags = SA_SIGINFO; - auto sa_cleanup = ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGALRM, sa)); - - // Actually allow SIGALRM delivery. - auto mask_cleanup = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_UNBLOCK, SIGALRM)); - - // Alarm in 20 second, which should be well into the loop below. - ASSERT_THAT(alarm(20), SyscallSucceeds()); - // Make sure that the signal gets delivered even if we are spinning in user - // mode when it arrives. - while (!alarms_received) { - } -} - -} // namespace - -} // namespace testing -} // namespace gvisor - -int main(int argc, char** argv) { - // These tests depend on delivering SIGALRM to the main thread. Block SIGALRM - // so that any other threads created by TestInit will also have SIGALRM - // blocked. - sigset_t set; - sigemptyset(&set); - sigaddset(&set, SIGALRM); - TEST_PCHECK(sigprocmask(SIG_BLOCK, &set, nullptr) == 0); - - gvisor::testing::TestInit(&argc, &argv); - - return RUN_ALL_TESTS(); -} diff --git a/test/syscalls/linux/arch_prctl.cc b/test/syscalls/linux/arch_prctl.cc deleted file mode 100644 index 81bf5a775..000000000 --- a/test/syscalls/linux/arch_prctl.cc +++ /dev/null @@ -1,48 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <asm/prctl.h> -#include <sys/prctl.h> - -#include "gtest/gtest.h" -#include "test/util/test_util.h" - -// glibc does not provide a prototype for arch_prctl() so declare it here. -extern "C" int arch_prctl(int code, uintptr_t addr); - -namespace gvisor { -namespace testing { - -namespace { - -TEST(ArchPrctlTest, GetSetFS) { - uintptr_t orig; - const uintptr_t kNonCanonicalFsbase = 0x4141414142424242; - - // Get the original FS.base and then set it to the same value (this is - // intentional because FS.base is the TLS pointer so we cannot change it - // arbitrarily). - ASSERT_THAT(arch_prctl(ARCH_GET_FS, reinterpret_cast<uintptr_t>(&orig)), - SyscallSucceeds()); - ASSERT_THAT(arch_prctl(ARCH_SET_FS, orig), SyscallSucceeds()); - - // Trying to set FS.base to a non-canonical value should return an error. - ASSERT_THAT(arch_prctl(ARCH_SET_FS, kNonCanonicalFsbase), - SyscallFailsWithErrno(EPERM)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/bad.cc b/test/syscalls/linux/bad.cc deleted file mode 100644 index adfb149df..000000000 --- a/test/syscalls/linux/bad.cc +++ /dev/null @@ -1,45 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <sys/syscall.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { -#ifdef __x86_64__ -// get_kernel_syms is not supported in Linux > 2.6, and not implemented in -// gVisor. -constexpr uint32_t kNotImplementedSyscall = SYS_get_kernel_syms; -#elif __aarch64__ -// Use the last of arch_specific_syscalls which are not implemented on arm64. -constexpr uint32_t kNotImplementedSyscall = SYS_arch_specific_syscall + 15; -#endif - -TEST(BadSyscallTest, NotImplemented) { - EXPECT_THAT(syscall(kNotImplementedSyscall), SyscallFailsWithErrno(ENOSYS)); -} - -TEST(BadSyscallTest, NegativeOne) { - EXPECT_THAT(syscall(-1), SyscallFailsWithErrno(ENOSYS)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/base_poll_test.cc b/test/syscalls/linux/base_poll_test.cc deleted file mode 100644 index ab7a19dd0..000000000 --- a/test/syscalls/linux/base_poll_test.cc +++ /dev/null @@ -1,65 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/syscalls/linux/base_poll_test.h" - -#include <sys/syscall.h> -#include <sys/types.h> -#include <syscall.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "absl/memory/memory.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -static volatile int timer_fired = 0; -static void SigAlarmHandler(int, siginfo_t*, void*) { timer_fired = 1; } - -BasePollTest::BasePollTest() { - // Register our SIGALRM handler, but save the original so we can restore in - // the destructor. - struct sigaction sa = {}; - sa.sa_sigaction = SigAlarmHandler; - sigfillset(&sa.sa_mask); - TEST_PCHECK(sigaction(SIGALRM, &sa, &original_alarm_sa_) == 0); -} - -BasePollTest::~BasePollTest() { - ClearTimer(); - TEST_PCHECK(sigaction(SIGALRM, &original_alarm_sa_, nullptr) == 0); -} - -void BasePollTest::SetTimer(absl::Duration duration) { - pid_t tgid = getpid(); - pid_t tid = gettid(); - ClearTimer(); - - // Create a new timer thread. - timer_ = absl::make_unique<TimerThread>(absl::Now() + duration, tgid, tid); -} - -bool BasePollTest::TimerFired() const { return timer_fired; } - -void BasePollTest::ClearTimer() { - timer_.reset(); - timer_fired = 0; -} - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/base_poll_test.h b/test/syscalls/linux/base_poll_test.h deleted file mode 100644 index 0d4a6701e..000000000 --- a/test/syscalls/linux/base_poll_test.h +++ /dev/null @@ -1,101 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_SYSCALLS_BASE_POLL_TEST_H_ -#define GVISOR_TEST_SYSCALLS_BASE_POLL_TEST_H_ - -#include <signal.h> -#include <sys/syscall.h> -#include <sys/types.h> -#include <syscall.h> -#include <time.h> -#include <unistd.h> - -#include <memory> - -#include "gtest/gtest.h" -#include "absl/synchronization/mutex.h" -#include "absl/time/time.h" -#include "test/util/logging.h" -#include "test/util/signal_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { - -// TimerThread is a cancelable timer. -class TimerThread { - public: - TimerThread(absl::Time deadline, pid_t tgid, pid_t tid) - : thread_([=] { - mu_.Lock(); - mu_.AwaitWithDeadline(absl::Condition(&cancel_), deadline); - if (!cancel_) { - TEST_PCHECK(tgkill(tgid, tid, SIGALRM) == 0); - } - mu_.Unlock(); - }) {} - - ~TimerThread() { Cancel(); } - - void Cancel() { - absl::MutexLock ml(&mu_); - cancel_ = true; - } - - private: - mutable absl::Mutex mu_; - bool cancel_ ABSL_GUARDED_BY(mu_) = false; - - // Must be last to ensure that the destructor for the thread is run before - // any other member of the object is destroyed. - ScopedThread thread_; -}; - -// Base test fixture for poll, select, ppoll, and pselect tests. -// -// This fixture makes use of SIGALRM. The handler is saved in SetUp() and -// restored in TearDown(). -class BasePollTest : public ::testing::Test { - protected: - BasePollTest(); - ~BasePollTest() override; - - // Sets a timer that will send a signal to the calling thread after - // `duration`. - void SetTimer(absl::Duration duration); - - // Returns true if the timer has fired. - bool TimerFired() const; - - // Stops the pending timer (if any) and clear the "fired" state. - void ClearTimer(); - - private: - // Thread that implements the timer. If the timer is stopped, timer_ is null. - // - // We have to use a thread for this purpose because tests using this fixture - // expect to be interrupted by the timer signal, but itimers/alarm(2) send - // thread-group-directed signals, which may be handled by any thread in the - // test process. - std::unique_ptr<TimerThread> timer_; - - // The original SIGALRM handler, to restore in destructor. - struct sigaction original_alarm_sa_; -}; - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_SYSCALLS_BASE_POLL_TEST_H_ diff --git a/test/syscalls/linux/bind.cc b/test/syscalls/linux/bind.cc deleted file mode 100644 index 9547c4ab2..000000000 --- a/test/syscalls/linux/bind.cc +++ /dev/null @@ -1,145 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <stdio.h> -#include <sys/socket.h> -#include <sys/un.h> - -#include "gtest/gtest.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -TEST_P(AllSocketPairTest, Bind) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); -} - -TEST_P(AllSocketPairTest, BindTooLong) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - // first_addr is a sockaddr_storage being used as a sockaddr_un. Use the full - // length which is longer than expected for a Unix socket. - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sizeof(sockaddr_storage)), - SyscallFailsWithErrno(EINVAL)); -} - -TEST_P(AllSocketPairTest, DoubleBindSocket) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - EXPECT_THAT( - bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - // Linux 4.09 returns EINVAL here, but some time before 4.19 it switched - // to EADDRINUSE. - AnyOf(SyscallFailsWithErrno(EADDRINUSE), SyscallFailsWithErrno(EINVAL))); -} - -TEST_P(AllSocketPairTest, GetLocalAddr) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - socklen_t addressLength = sockets->first_addr_size(); - struct sockaddr_storage address = {}; - ASSERT_THAT(getsockname(sockets->first_fd(), (struct sockaddr*)(&address), - &addressLength), - SyscallSucceeds()); - EXPECT_EQ( - 0, memcmp(&address, sockets->first_addr(), sockets->first_addr_size())); -} - -TEST_P(AllSocketPairTest, GetLocalAddrWithoutBind) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - socklen_t addressLength = sockets->first_addr_size(); - struct sockaddr_storage received_address = {}; - ASSERT_THAT( - getsockname(sockets->first_fd(), (struct sockaddr*)(&received_address), - &addressLength), - SyscallSucceeds()); - struct sockaddr_storage want_address = {}; - want_address.ss_family = sockets->first_addr()->sa_family; - EXPECT_EQ(0, memcmp(&received_address, &want_address, addressLength)); -} - -TEST_P(AllSocketPairTest, GetRemoteAddressWithoutConnect) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - socklen_t addressLength = sockets->first_addr_size(); - struct sockaddr_storage address = {}; - ASSERT_THAT(getpeername(sockets->second_fd(), (struct sockaddr*)(&address), - &addressLength), - SyscallFailsWithErrno(ENOTCONN)); -} - -TEST_P(AllSocketPairTest, DoubleBindAddress) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - EXPECT_THAT(bind(sockets->second_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallFailsWithErrno(EADDRINUSE)); -} - -TEST_P(AllSocketPairTest, Unbind) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - ASSERT_THAT(close(sockets->release_first_fd()), SyscallSucceeds()); - - // Filesystem Unix sockets do not release their address when closed. - if (sockets->first_addr()->sa_data[0] != 0) { - ASSERT_THAT(bind(sockets->second_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallFailsWithErrno(EADDRINUSE)); - return; - } - - ASSERT_THAT(bind(sockets->second_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - ASSERT_THAT(close(sockets->release_second_fd()), SyscallSucceeds()); -} - -INSTANTIATE_TEST_SUITE_P( - AllUnixDomainSockets, AllSocketPairTest, - ::testing::ValuesIn(VecCat<SocketPairKind>( - ApplyVec<SocketPairKind>( - FilesystemUnboundUnixDomainSocketPair, - AllBitwiseCombinations(List<int>{SOCK_STREAM, SOCK_DGRAM, - SOCK_SEQPACKET}, - List<int>{0, SOCK_NONBLOCK})), - ApplyVec<SocketPairKind>( - AbstractUnboundUnixDomainSocketPair, - AllBitwiseCombinations(List<int>{SOCK_STREAM, SOCK_DGRAM, - SOCK_SEQPACKET}, - List<int>{0, SOCK_NONBLOCK}))))); - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/brk.cc b/test/syscalls/linux/brk.cc deleted file mode 100644 index a03a44465..000000000 --- a/test/syscalls/linux/brk.cc +++ /dev/null @@ -1,31 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <stdint.h> -#include <sys/syscall.h> -#include <unistd.h> - -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -TEST(BrkTest, BrkSyscallReturnsOldBrkOnFailure) { - auto old_brk = sbrk(0); - EXPECT_THAT(syscall(SYS_brk, reinterpret_cast<void*>(-1)), - SyscallSucceedsWithValue(reinterpret_cast<uintptr_t>(old_brk))); -} - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/chdir.cc b/test/syscalls/linux/chdir.cc deleted file mode 100644 index 3182c228b..000000000 --- a/test/syscalls/linux/chdir.cc +++ /dev/null @@ -1,64 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <fcntl.h> -#include <linux/limits.h> -#include <sys/socket.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <sys/un.h> - -#include "gtest/gtest.h" -#include "test/util/capability_util.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -TEST(ChdirTest, Success) { - auto old_dir = GetAbsoluteTestTmpdir(); - auto temp_dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - EXPECT_THAT(chdir(temp_dir.path().c_str()), SyscallSucceeds()); - // Temp path destructor deletes the newly created tmp dir and Sentry rejects - // saving when its current dir is still pointing to the path. Switch to a - // permanent path here. - EXPECT_THAT(chdir(old_dir.c_str()), SyscallSucceeds()); -} - -TEST(ChdirTest, PermissionDenied) { - // Drop capabilities that allow us to override directory permissions. - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_READ_SEARCH, false)); - - auto temp_dir = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateDirWith(GetAbsoluteTestTmpdir(), 0666 /* mode */)); - EXPECT_THAT(chdir(temp_dir.path().c_str()), SyscallFailsWithErrno(EACCES)); -} - -TEST(ChdirTest, NotDir) { - auto temp_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - EXPECT_THAT(chdir(temp_file.path().c_str()), SyscallFailsWithErrno(ENOTDIR)); -} - -TEST(ChdirTest, NotExist) { - EXPECT_THAT(chdir("/foo/bar"), SyscallFailsWithErrno(ENOENT)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/chmod.cc b/test/syscalls/linux/chmod.cc deleted file mode 100644 index a06b5cfd6..000000000 --- a/test/syscalls/linux/chmod.cc +++ /dev/null @@ -1,264 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <fcntl.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <unistd.h> - -#include <string> - -#include "gtest/gtest.h" -#include "test/util/capability_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/fs_util.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -TEST(ChmodTest, ChmodFileSucceeds) { - // Drop capabilities that allow us to override file permissions. - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); - - auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - - ASSERT_THAT(chmod(file.path().c_str(), 0466), SyscallSucceeds()); - EXPECT_THAT(open(file.path().c_str(), O_RDWR), SyscallFailsWithErrno(EACCES)); -} - -TEST(ChmodTest, ChmodDirSucceeds) { - // Drop capabilities that allow us to override file and directory permissions. - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_READ_SEARCH, false)); - - auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const std::string fileInDir = NewTempAbsPathInDir(dir.path()); - - ASSERT_THAT(chmod(dir.path().c_str(), 0466), SyscallSucceeds()); - EXPECT_THAT(open(fileInDir.c_str(), O_RDONLY), SyscallFailsWithErrno(EACCES)); -} - -TEST(ChmodTest, FchmodFileSucceeds_NoRandomSave) { - // Drop capabilities that allow us to file directory permissions. - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); - - auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileMode(0666)); - int fd; - ASSERT_THAT(fd = open(file.path().c_str(), O_RDWR), SyscallSucceeds()); - - { - const DisableSave ds; // File permissions are reduced. - ASSERT_THAT(fchmod(fd, 0444), SyscallSucceeds()); - EXPECT_THAT(close(fd), SyscallSucceeds()); - } - - EXPECT_THAT(open(file.path().c_str(), O_RDWR), SyscallFailsWithErrno(EACCES)); -} - -TEST(ChmodTest, FchmodDirSucceeds_NoRandomSave) { - // Drop capabilities that allow us to override file and directory permissions. - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_READ_SEARCH, false)); - - auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - int fd; - ASSERT_THAT(fd = open(dir.path().c_str(), O_RDONLY | O_DIRECTORY), - SyscallSucceeds()); - - { - const DisableSave ds; // File permissions are reduced. - ASSERT_THAT(fchmod(fd, 0), SyscallSucceeds()); - EXPECT_THAT(close(fd), SyscallSucceeds()); - } - - EXPECT_THAT(open(dir.path().c_str(), O_RDONLY), - SyscallFailsWithErrno(EACCES)); -} - -TEST(ChmodTest, FchmodBadF) { - ASSERT_THAT(fchmod(-1, 0444), SyscallFailsWithErrno(EBADF)); -} - -TEST(ChmodTest, FchmodatBadF) { - ASSERT_THAT(fchmodat(-1, "foo", 0444, 0), SyscallFailsWithErrno(EBADF)); -} - -TEST(ChmodTest, FchmodatNotDir) { - ASSERT_THAT(fchmodat(-1, "", 0444, 0), SyscallFailsWithErrno(ENOENT)); -} - -TEST(ChmodTest, FchmodatFileAbsolutePath) { - // Drop capabilities that allow us to override file permissions. - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); - - auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - - ASSERT_THAT(fchmodat(-1, file.path().c_str(), 0444, 0), SyscallSucceeds()); - EXPECT_THAT(open(file.path().c_str(), O_RDWR), SyscallFailsWithErrno(EACCES)); -} - -TEST(ChmodTest, FchmodatDirAbsolutePath) { - // Drop capabilities that allow us to override file and directory permissions. - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_READ_SEARCH, false)); - - auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - - int fd; - ASSERT_THAT(fd = open(dir.path().c_str(), O_RDONLY | O_DIRECTORY), - SyscallSucceeds()); - EXPECT_THAT(close(fd), SyscallSucceeds()); - - ASSERT_THAT(fchmodat(-1, dir.path().c_str(), 0, 0), SyscallSucceeds()); - EXPECT_THAT(open(dir.path().c_str(), O_RDONLY), - SyscallFailsWithErrno(EACCES)); -} - -TEST(ChmodTest, FchmodatFile) { - // Drop capabilities that allow us to override file permissions. - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); - - auto temp_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - - int parent_fd; - ASSERT_THAT( - parent_fd = open(GetAbsoluteTestTmpdir().c_str(), O_RDONLY | O_DIRECTORY), - SyscallSucceeds()); - - ASSERT_THAT( - fchmodat(parent_fd, std::string(Basename(temp_file.path())).c_str(), 0444, - 0), - SyscallSucceeds()); - EXPECT_THAT(close(parent_fd), SyscallSucceeds()); - - EXPECT_THAT(open(temp_file.path().c_str(), O_RDWR), - SyscallFailsWithErrno(EACCES)); -} - -TEST(ChmodTest, FchmodatDir) { - // Drop capabilities that allow us to override file and directory permissions. - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_READ_SEARCH, false)); - - auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - - int parent_fd; - ASSERT_THAT( - parent_fd = open(GetAbsoluteTestTmpdir().c_str(), O_RDONLY | O_DIRECTORY), - SyscallSucceeds()); - - int fd; - ASSERT_THAT(fd = open(dir.path().c_str(), O_RDONLY | O_DIRECTORY), - SyscallSucceeds()); - EXPECT_THAT(close(fd), SyscallSucceeds()); - - ASSERT_THAT( - fchmodat(parent_fd, std::string(Basename(dir.path())).c_str(), 0, 0), - SyscallSucceeds()); - EXPECT_THAT(close(parent_fd), SyscallSucceeds()); - - EXPECT_THAT(open(dir.path().c_str(), O_RDONLY | O_DIRECTORY), - SyscallFailsWithErrno(EACCES)); -} - -TEST(ChmodTest, ChmodDowngradeWritability_NoRandomSave) { - auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileMode(0666)); - - int fd; - ASSERT_THAT(fd = open(file.path().c_str(), O_RDWR), SyscallSucceeds()); - - const DisableSave ds; // Permissions are dropped. - ASSERT_THAT(chmod(file.path().c_str(), 0444), SyscallSucceeds()); - EXPECT_THAT(write(fd, "hello", 5), SyscallSucceedsWithValue(5)); - - EXPECT_THAT(close(fd), SyscallSucceeds()); -} - -TEST(ChmodTest, ChmodFileToNoPermissionsSucceeds) { - // Drop capabilities that allow us to override file permissions. - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_READ_SEARCH, false)); - - auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileMode(0666)); - - ASSERT_THAT(chmod(file.path().c_str(), 0), SyscallSucceeds()); - - EXPECT_THAT(open(file.path().c_str(), O_RDONLY), - SyscallFailsWithErrno(EACCES)); -} - -TEST(ChmodTest, FchmodDowngradeWritability_NoRandomSave) { - auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - - int fd; - ASSERT_THAT(fd = open(file.path().c_str(), O_RDWR | O_CREAT, 0666), - SyscallSucceeds()); - - const DisableSave ds; // Permissions are dropped. - ASSERT_THAT(fchmod(fd, 0444), SyscallSucceeds()); - EXPECT_THAT(write(fd, "hello", 5), SyscallSucceedsWithValue(5)); - - EXPECT_THAT(close(fd), SyscallSucceeds()); -} - -TEST(ChmodTest, FchmodFileToNoPermissionsSucceeds_NoRandomSave) { - // Drop capabilities that allow us to override file permissions. - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_READ_SEARCH, false)); - - auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileMode(0666)); - - int fd; - ASSERT_THAT(fd = open(file.path().c_str(), O_RDWR), SyscallSucceeds()); - - { - const DisableSave ds; // Permissions are dropped. - ASSERT_THAT(fchmod(fd, 0), SyscallSucceeds()); - EXPECT_THAT(close(fd), SyscallSucceeds()); - } - - EXPECT_THAT(open(file.path().c_str(), O_RDONLY), - SyscallFailsWithErrno(EACCES)); -} - -// Verify that we can get a RW FD after chmod, even if a RO fd is left open. -TEST(ChmodTest, ChmodWritableWithOpenFD) { - // FIXME(b/72455313): broken on hostfs. - if (IsRunningOnGvisor()) { - return; - } - - TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileMode(0444)); - - FileDescriptor fd1 = ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDONLY)); - - ASSERT_THAT(fchmod(fd1.get(), 0644), SyscallSucceeds()); - - // This FD is writable, even though fd1 has a read-only reference to the file. - FileDescriptor fd2 = ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR)); - - // fd1 is not writable, but fd2 is. - char c = 'a'; - EXPECT_THAT(WriteFd(fd1.get(), &c, 1), SyscallFailsWithErrno(EBADF)); - EXPECT_THAT(WriteFd(fd2.get(), &c, 1), SyscallSucceedsWithValue(1)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/chown.cc b/test/syscalls/linux/chown.cc deleted file mode 100644 index 7a28b674d..000000000 --- a/test/syscalls/linux/chown.cc +++ /dev/null @@ -1,206 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <fcntl.h> -#include <grp.h> -#include <sys/types.h> -#include <unistd.h> - -#include <vector> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "absl/flags/flag.h" -#include "absl/synchronization/notification.h" -#include "test/util/capability_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/fs_util.h" -#include "test/util/posix_error.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -ABSL_FLAG(int32_t, scratch_uid1, 65534, "first scratch UID"); -ABSL_FLAG(int32_t, scratch_uid2, 65533, "second scratch UID"); -ABSL_FLAG(int32_t, scratch_gid, 65534, "first scratch GID"); - -namespace gvisor { -namespace testing { - -namespace { - -TEST(ChownTest, FchownBadF) { - ASSERT_THAT(fchown(-1, 0, 0), SyscallFailsWithErrno(EBADF)); -} - -TEST(ChownTest, FchownatBadF) { - ASSERT_THAT(fchownat(-1, "fff", 0, 0, 0), SyscallFailsWithErrno(EBADF)); -} - -TEST(ChownTest, FchownatEmptyPath) { - const auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const auto fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(dir.path(), O_DIRECTORY | O_RDONLY)); - ASSERT_THAT(fchownat(fd.get(), "", 0, 0, 0), SyscallFailsWithErrno(ENOENT)); -} - -using Chown = - std::function<PosixError(const std::string&, uid_t owner, gid_t group)>; - -class ChownParamTest : public ::testing::TestWithParam<Chown> {}; - -TEST_P(ChownParamTest, ChownFileSucceeds) { - if (ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_CHOWN))) { - ASSERT_NO_ERRNO(SetCapability(CAP_CHOWN, false)); - } - - const auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - - // At least *try* setting to a group other than the EGID. - gid_t gid; - EXPECT_THAT(gid = getegid(), SyscallSucceeds()); - int num_groups; - EXPECT_THAT(num_groups = getgroups(0, nullptr), SyscallSucceeds()); - if (num_groups > 0) { - std::vector<gid_t> list(num_groups); - EXPECT_THAT(getgroups(list.size(), list.data()), SyscallSucceeds()); - gid = list[0]; - } - - EXPECT_NO_ERRNO(GetParam()(file.path(), geteuid(), gid)); - - struct stat s = {}; - ASSERT_THAT(stat(file.path().c_str(), &s), SyscallSucceeds()); - EXPECT_EQ(s.st_uid, geteuid()); - EXPECT_EQ(s.st_gid, gid); -} - -TEST_P(ChownParamTest, ChownFilePermissionDenied) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SETUID))); - - const auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileMode(0777)); - - // Drop privileges and change IDs only in child thread, or else this parent - // thread won't be able to open some log files after the test ends. - ScopedThread([&] { - // Drop privileges. - if (HaveCapability(CAP_CHOWN).ValueOrDie()) { - EXPECT_NO_ERRNO(SetCapability(CAP_CHOWN, false)); - } - - // Change EUID and EGID. - // - // See note about POSIX below. - EXPECT_THAT( - syscall(SYS_setresgid, -1, absl::GetFlag(FLAGS_scratch_gid), -1), - SyscallSucceeds()); - EXPECT_THAT( - syscall(SYS_setresuid, -1, absl::GetFlag(FLAGS_scratch_uid1), -1), - SyscallSucceeds()); - - EXPECT_THAT(GetParam()(file.path(), geteuid(), getegid()), - PosixErrorIs(EPERM, ::testing::ContainsRegex("chown"))); - }); -} - -TEST_P(ChownParamTest, ChownFileSucceedsAsRoot) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability((CAP_CHOWN)))); - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability((CAP_SETUID)))); - - const std::string filename = NewTempAbsPath(); - - absl::Notification fileCreated, fileChowned; - // Change UID only in child thread, or else this parent thread won't be able - // to open some log files after the test ends. - ScopedThread t([&] { - // POSIX requires that all threads in a process share the same UIDs, so - // the NPTL setresuid wrappers use signals to make all threads execute the - // setresuid syscall. However, we want this thread to have its own set of - // credentials different from the parent process, so we use the raw - // syscall. - EXPECT_THAT( - syscall(SYS_setresuid, -1, absl::GetFlag(FLAGS_scratch_uid2), -1), - SyscallSucceeds()); - - // Create file and immediately close it. - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(filename, O_CREAT | O_RDWR, 0644)); - fd.reset(); // Close the fd. - - fileCreated.Notify(); - fileChowned.WaitForNotification(); - - EXPECT_THAT(open(filename.c_str(), O_RDWR), SyscallFailsWithErrno(EACCES)); - FileDescriptor fd2 = ASSERT_NO_ERRNO_AND_VALUE(Open(filename, O_RDONLY)); - }); - - fileCreated.WaitForNotification(); - - // Set file's owners to someone different. - EXPECT_NO_ERRNO(GetParam()(filename, absl::GetFlag(FLAGS_scratch_uid1), - absl::GetFlag(FLAGS_scratch_gid))); - - struct stat s; - EXPECT_THAT(stat(filename.c_str(), &s), SyscallSucceeds()); - EXPECT_EQ(s.st_uid, absl::GetFlag(FLAGS_scratch_uid1)); - EXPECT_EQ(s.st_gid, absl::GetFlag(FLAGS_scratch_gid)); - - fileChowned.Notify(); -} - -PosixError errorFromReturn(const std::string& name, int ret) { - if (ret == -1) { - return PosixError(errno, absl::StrCat(name, " failed")); - } - return NoError(); -} - -INSTANTIATE_TEST_SUITE_P( - ChownKinds, ChownParamTest, - ::testing::Values( - [](const std::string& path, uid_t owner, gid_t group) -> PosixError { - int rc = chown(path.c_str(), owner, group); - MaybeSave(); - return errorFromReturn("chown", rc); - }, - [](const std::string& path, uid_t owner, gid_t group) -> PosixError { - int rc = lchown(path.c_str(), owner, group); - MaybeSave(); - return errorFromReturn("lchown", rc); - }, - [](const std::string& path, uid_t owner, gid_t group) -> PosixError { - ASSIGN_OR_RETURN_ERRNO(auto fd, Open(path, O_RDWR)); - int rc = fchown(fd.get(), owner, group); - MaybeSave(); - return errorFromReturn("fchown", rc); - }, - [](const std::string& path, uid_t owner, gid_t group) -> PosixError { - ASSIGN_OR_RETURN_ERRNO(auto fd, Open(path, O_RDWR)); - int rc = fchownat(fd.get(), "", owner, group, AT_EMPTY_PATH); - MaybeSave(); - return errorFromReturn("fchownat-fd", rc); - }, - [](const std::string& path, uid_t owner, gid_t group) -> PosixError { - ASSIGN_OR_RETURN_ERRNO(auto dirfd, Open(std::string(Dirname(path)), - O_DIRECTORY | O_RDONLY)); - int rc = fchownat(dirfd.get(), std::string(Basename(path)).c_str(), - owner, group, 0); - MaybeSave(); - return errorFromReturn("fchownat-dirfd", rc); - })); - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/chroot.cc b/test/syscalls/linux/chroot.cc deleted file mode 100644 index 85ec013d5..000000000 --- a/test/syscalls/linux/chroot.cc +++ /dev/null @@ -1,366 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <fcntl.h> -#include <stddef.h> -#include <sys/mman.h> -#include <sys/stat.h> -#include <syscall.h> -#include <unistd.h> - -#include <string> -#include <vector> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "absl/strings/str_cat.h" -#include "absl/strings/str_split.h" -#include "absl/strings/string_view.h" -#include "test/util/capability_util.h" -#include "test/util/cleanup.h" -#include "test/util/file_descriptor.h" -#include "test/util/fs_util.h" -#include "test/util/mount_util.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -using ::testing::HasSubstr; -using ::testing::Not; - -namespace gvisor { -namespace testing { - -namespace { - -TEST(ChrootTest, Success) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_CHROOT))); - - auto temp_dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - EXPECT_THAT(chroot(temp_dir.path().c_str()), SyscallSucceeds()); -} - -TEST(ChrootTest, PermissionDenied) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_CHROOT))); - - // CAP_DAC_READ_SEARCH and CAP_DAC_OVERRIDE may override Execute permission on - // directories. - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_READ_SEARCH, false)); - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); - - auto temp_dir = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateDirWith(GetAbsoluteTestTmpdir(), 0666 /* mode */)); - EXPECT_THAT(chroot(temp_dir.path().c_str()), SyscallFailsWithErrno(EACCES)); -} - -TEST(ChrootTest, NotDir) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_CHROOT))); - - auto temp_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - EXPECT_THAT(chroot(temp_file.path().c_str()), SyscallFailsWithErrno(ENOTDIR)); -} - -TEST(ChrootTest, NotExist) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_CHROOT))); - - EXPECT_THAT(chroot("/foo/bar"), SyscallFailsWithErrno(ENOENT)); -} - -TEST(ChrootTest, WithoutCapability) { - // Unset CAP_SYS_CHROOT. - ASSERT_NO_ERRNO(SetCapability(CAP_SYS_CHROOT, false)); - - auto temp_dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - EXPECT_THAT(chroot(temp_dir.path().c_str()), SyscallFailsWithErrno(EPERM)); -} - -TEST(ChrootTest, CreatesNewRoot) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_CHROOT))); - - // Grab the initial cwd. - char initial_cwd[1024]; - ASSERT_THAT(syscall(__NR_getcwd, initial_cwd, sizeof(initial_cwd)), - SyscallSucceeds()); - - auto new_root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - auto file_in_new_root = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(new_root.path())); - - // chroot into new_root. - ASSERT_THAT(chroot(new_root.path().c_str()), SyscallSucceeds()); - - // getcwd should return "(unreachable)" followed by the initial_cwd. - char cwd[1024]; - ASSERT_THAT(syscall(__NR_getcwd, cwd, sizeof(cwd)), SyscallSucceeds()); - std::string expected_cwd = "(unreachable)"; - expected_cwd += initial_cwd; - EXPECT_STREQ(cwd, expected_cwd.c_str()); - - // Should not be able to stat file by its full path. - struct stat statbuf; - EXPECT_THAT(stat(file_in_new_root.path().c_str(), &statbuf), - SyscallFailsWithErrno(ENOENT)); - - // Should be able to stat file at new rooted path. - auto basename = std::string(Basename(file_in_new_root.path())); - auto rootedFile = "/" + basename; - ASSERT_THAT(stat(rootedFile.c_str(), &statbuf), SyscallSucceeds()); - - // Should be able to stat cwd at '.' even though it's outside root. - ASSERT_THAT(stat(".", &statbuf), SyscallSucceeds()); - - // chdir into new root. - ASSERT_THAT(chdir("/"), SyscallSucceeds()); - - // getcwd should return "/". - EXPECT_THAT(syscall(__NR_getcwd, cwd, sizeof(cwd)), SyscallSucceeds()); - EXPECT_STREQ(cwd, "/"); - - // Statting '.', '..', '/', and '/..' all return the same dev and inode. - struct stat statbuf_dot; - ASSERT_THAT(stat(".", &statbuf_dot), SyscallSucceeds()); - struct stat statbuf_dotdot; - ASSERT_THAT(stat("..", &statbuf_dotdot), SyscallSucceeds()); - EXPECT_EQ(statbuf_dot.st_dev, statbuf_dotdot.st_dev); - EXPECT_EQ(statbuf_dot.st_ino, statbuf_dotdot.st_ino); - struct stat statbuf_slash; - ASSERT_THAT(stat("/", &statbuf_slash), SyscallSucceeds()); - EXPECT_EQ(statbuf_dot.st_dev, statbuf_slash.st_dev); - EXPECT_EQ(statbuf_dot.st_ino, statbuf_slash.st_ino); - struct stat statbuf_slashdotdot; - ASSERT_THAT(stat("/..", &statbuf_slashdotdot), SyscallSucceeds()); - EXPECT_EQ(statbuf_dot.st_dev, statbuf_slashdotdot.st_dev); - EXPECT_EQ(statbuf_dot.st_ino, statbuf_slashdotdot.st_ino); -} - -TEST(ChrootTest, DotDotFromOpenFD) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_CHROOT))); - - auto dir_outside_root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - auto fd = ASSERT_NO_ERRNO_AND_VALUE( - Open(dir_outside_root.path(), O_RDONLY | O_DIRECTORY)); - auto new_root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - - // chroot into new_root. - ASSERT_THAT(chroot(new_root.path().c_str()), SyscallSucceeds()); - - // openat on fd with path .. will succeed. - int other_fd; - ASSERT_THAT(other_fd = openat(fd.get(), "..", O_RDONLY), SyscallSucceeds()); - EXPECT_THAT(close(other_fd), SyscallSucceeds()); - - // getdents on fd should not error. - char buf[1024]; - ASSERT_THAT(syscall(SYS_getdents64, fd.get(), buf, sizeof(buf)), - SyscallSucceeds()); -} - -// Test that link resolution in a chroot can escape the root by following an -// open proc fd. Regression test for b/32316719. -TEST(ChrootTest, ProcFdLinkResolutionInChroot) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_CHROOT))); - - const TempPath file_outside_chroot = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file_outside_chroot.path(), O_RDONLY)); - - const FileDescriptor proc_fd = ASSERT_NO_ERRNO_AND_VALUE( - Open("/proc", O_DIRECTORY | O_RDONLY | O_CLOEXEC)); - - auto temp_dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - ASSERT_THAT(chroot(temp_dir.path().c_str()), SyscallSucceeds()); - - // Opening relative to an already open fd to a node outside the chroot works. - const FileDescriptor proc_self_fd = ASSERT_NO_ERRNO_AND_VALUE( - OpenAt(proc_fd.get(), "self/fd", O_DIRECTORY | O_RDONLY | O_CLOEXEC)); - - // Proc fd symlinks can escape the chroot if the fd the symlink refers to - // refers to an object outside the chroot. - struct stat s = {}; - EXPECT_THAT( - fstatat(proc_self_fd.get(), absl::StrCat(fd.get()).c_str(), &s, 0), - SyscallSucceeds()); - - // Try to stat the stdin fd. Internally, this is handled differently from a - // proc fd entry pointing to a file, since stdin is backed by a host fd, and - // isn't a walkable path on the filesystem inside the sandbox. - EXPECT_THAT(fstatat(proc_self_fd.get(), "0", &s, 0), SyscallSucceeds()); -} - -// This test will verify that when you hold a fd to proc before entering -// a chroot that any files inside the chroot will appear rooted to the -// base chroot when examining /proc/self/fd/{num}. -TEST(ChrootTest, ProcMemSelfFdsNoEscapeProcOpen) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_CHROOT))); - - // Get a FD to /proc before we enter the chroot. - const FileDescriptor proc = - ASSERT_NO_ERRNO_AND_VALUE(Open("/proc", O_RDONLY)); - - // Create and enter a chroot directory. - const auto temp_dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - ASSERT_THAT(chroot(temp_dir.path().c_str()), SyscallSucceeds()); - - // Open a file inside the chroot at /foo. - const FileDescriptor foo = - ASSERT_NO_ERRNO_AND_VALUE(Open("/foo", O_CREAT | O_RDONLY, 0644)); - - // Examine /proc/self/fd/{foo_fd} to see if it exposes the fact that we're - // inside a chroot, the path should be /foo and NOT {chroot_dir}/foo. - const std::string fd_path = absl::StrCat("self/fd/", foo.get()); - char buf[1024] = {}; - size_t bytes_read = 0; - ASSERT_THAT(bytes_read = - readlinkat(proc.get(), fd_path.c_str(), buf, sizeof(buf) - 1), - SyscallSucceeds()); - - // The link should resolve to something. - ASSERT_GT(bytes_read, 0); - - // Assert that the link doesn't contain the chroot path and is only /foo. - EXPECT_STREQ(buf, "/foo"); -} - -// This test will verify that a file inside a chroot when mmapped will not -// expose the full file path via /proc/self/maps and instead honor the chroot. -TEST(ChrootTest, ProcMemSelfMapsNoEscapeProcOpen) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_CHROOT))); - - // Get a FD to /proc before we enter the chroot. - const FileDescriptor proc = - ASSERT_NO_ERRNO_AND_VALUE(Open("/proc", O_RDONLY)); - - // Create and enter a chroot directory. - const auto temp_dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - ASSERT_THAT(chroot(temp_dir.path().c_str()), SyscallSucceeds()); - - // Open a file inside the chroot at /foo. - const FileDescriptor foo = - ASSERT_NO_ERRNO_AND_VALUE(Open("/foo", O_CREAT | O_RDONLY, 0644)); - - // Mmap the newly created file. - void* foo_map = mmap(nullptr, kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE, - foo.get(), 0); - ASSERT_THAT(reinterpret_cast<int64_t>(foo_map), SyscallSucceeds()); - - // Always unmap. - auto cleanup_map = Cleanup( - [&] { EXPECT_THAT(munmap(foo_map, kPageSize), SyscallSucceeds()); }); - - // Examine /proc/self/maps to be sure that /foo doesn't appear to be - // mapped with the full chroot path. - const FileDescriptor maps = - ASSERT_NO_ERRNO_AND_VALUE(OpenAt(proc.get(), "self/maps", O_RDONLY)); - - size_t bytes_read = 0; - char buf[8 * 1024] = {}; - ASSERT_THAT(bytes_read = ReadFd(maps.get(), buf, sizeof(buf)), - SyscallSucceeds()); - - // The maps file should have something. - ASSERT_GT(bytes_read, 0); - - // Finally we want to make sure the maps don't contain the chroot path - ASSERT_EQ(std::string(buf, bytes_read).find(temp_dir.path()), - std::string::npos); -} - -// Test that mounts outside the chroot will not appear in /proc/self/mounts or -// /proc/self/mountinfo. -TEST(ChrootTest, ProcMountsMountinfoNoEscape) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_ADMIN))); - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_CHROOT))); - - // We are going to create some mounts and then chroot. In order to be able to - // unmount the mounts after the test run, we must chdir to the root and use - // relative paths for all mounts. That way, as long as we never chdir into - // the new root, we can access the mounts via relative paths and unmount them. - ASSERT_THAT(chdir("/"), SyscallSucceeds()); - - // Create nested tmpfs mounts. Note the use of relative paths in Mount calls. - auto const outer_dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - auto const outer_mount = ASSERT_NO_ERRNO_AND_VALUE(Mount( - "none", JoinPath(".", outer_dir.path()), "tmpfs", 0, "mode=0700", 0)); - - auto const inner_dir = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDirIn(outer_dir.path())); - auto const inner_mount = ASSERT_NO_ERRNO_AND_VALUE(Mount( - "none", JoinPath(".", inner_dir.path()), "tmpfs", 0, "mode=0700", 0)); - - // Filenames that will be checked for mounts, all relative to /proc dir. - std::string paths[3] = {"mounts", "self/mounts", "self/mountinfo"}; - - for (const std::string& path : paths) { - // We should have both inner and outer mounts. - const std::string contents = - ASSERT_NO_ERRNO_AND_VALUE(GetContents(JoinPath("/proc", path))); - EXPECT_THAT(contents, AllOf(HasSubstr(outer_dir.path()), - HasSubstr(inner_dir.path()))); - // We better have at least two mounts: the mounts we created plus the root. - std::vector<absl::string_view> submounts = - absl::StrSplit(contents, '\n', absl::SkipWhitespace()); - EXPECT_GT(submounts.size(), 2); - } - - // Get a FD to /proc before we enter the chroot. - const FileDescriptor proc = - ASSERT_NO_ERRNO_AND_VALUE(Open("/proc", O_RDONLY)); - - // Chroot to outer mount. - ASSERT_THAT(chroot(outer_dir.path().c_str()), SyscallSucceeds()); - - for (const std::string& path : paths) { - const FileDescriptor proc_file = - ASSERT_NO_ERRNO_AND_VALUE(OpenAt(proc.get(), path, O_RDONLY)); - - // Only two mounts visible from this chroot: the inner and outer. Both - // paths should be relative to the new chroot. - const std::string contents = - ASSERT_NO_ERRNO_AND_VALUE(GetContentsFD(proc_file.get())); - EXPECT_THAT(contents, - AllOf(HasSubstr(absl::StrCat(Basename(inner_dir.path()))), - Not(HasSubstr(outer_dir.path())), - Not(HasSubstr(inner_dir.path())))); - std::vector<absl::string_view> submounts = - absl::StrSplit(contents, '\n', absl::SkipWhitespace()); - EXPECT_EQ(submounts.size(), 2); - } - - // Chroot to inner mount. We must use an absolute path accessible to our - // chroot. - const std::string inner_dir_basename = - absl::StrCat("/", Basename(inner_dir.path())); - ASSERT_THAT(chroot(inner_dir_basename.c_str()), SyscallSucceeds()); - - for (const std::string& path : paths) { - const FileDescriptor proc_file = - ASSERT_NO_ERRNO_AND_VALUE(OpenAt(proc.get(), path, O_RDONLY)); - const std::string contents = - ASSERT_NO_ERRNO_AND_VALUE(GetContentsFD(proc_file.get())); - - // Only the inner mount visible from this chroot. - std::vector<absl::string_view> submounts = - absl::StrSplit(contents, '\n', absl::SkipWhitespace()); - EXPECT_EQ(submounts.size(), 1); - } - - // Chroot back to ".". - ASSERT_THAT(chroot("."), SyscallSucceeds()); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/clock_getres.cc b/test/syscalls/linux/clock_getres.cc deleted file mode 100644 index c408b936c..000000000 --- a/test/syscalls/linux/clock_getres.cc +++ /dev/null @@ -1,37 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <sys/time.h> -#include <time.h> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -// clock_getres works regardless of whether or not a timespec is passed. -TEST(ClockGetres, Timespec) { - struct timespec ts; - EXPECT_THAT(clock_getres(CLOCK_MONOTONIC, &ts), SyscallSucceeds()); - EXPECT_THAT(clock_getres(CLOCK_MONOTONIC, nullptr), SyscallSucceeds()); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/clock_gettime.cc b/test/syscalls/linux/clock_gettime.cc deleted file mode 100644 index 7f6015049..000000000 --- a/test/syscalls/linux/clock_gettime.cc +++ /dev/null @@ -1,163 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <pthread.h> -#include <sys/time.h> - -#include <cerrno> -#include <cstdint> -#include <ctime> -#include <list> -#include <memory> -#include <string> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -int64_t clock_gettime_nsecs(clockid_t id) { - struct timespec ts; - TEST_PCHECK(clock_gettime(id, &ts) == 0); - return (ts.tv_sec * 1000000000 + ts.tv_nsec); -} - -// Spin on the CPU for at least ns nanoseconds, based on -// CLOCK_THREAD_CPUTIME_ID. -void spin_ns(int64_t ns) { - int64_t start = clock_gettime_nsecs(CLOCK_THREAD_CPUTIME_ID); - int64_t end = start + ns; - - do { - constexpr int kLoopCount = 1000000; // large and arbitrary - // volatile to prevent the compiler from skipping this loop. - for (volatile int i = 0; i < kLoopCount; i++) { - } - } while (clock_gettime_nsecs(CLOCK_THREAD_CPUTIME_ID) < end); -} - -// Test that CLOCK_PROCESS_CPUTIME_ID is a superset of CLOCK_THREAD_CPUTIME_ID. -TEST(ClockGettime, CputimeId) { - constexpr int kNumThreads = 13; // arbitrary - - absl::Duration spin_time = absl::Seconds(1); - - // Start off the worker threads and compute the aggregate time spent by - // the workers. Note that we test CLOCK_PROCESS_CPUTIME_ID by having the - // workers execute in parallel and verifying that CLOCK_PROCESS_CPUTIME_ID - // accumulates the runtime of all threads. - int64_t start = clock_gettime_nsecs(CLOCK_PROCESS_CPUTIME_ID); - - // Create a kNumThreads threads. - std::list<ScopedThread> threads; - for (int i = 0; i < kNumThreads; i++) { - threads.emplace_back( - [spin_time] { spin_ns(absl::ToInt64Nanoseconds(spin_time)); }); - } - for (auto& t : threads) { - t.Join(); - } - - int64_t end = clock_gettime_nsecs(CLOCK_PROCESS_CPUTIME_ID); - - // The aggregate time spent in the worker threads must be at least - // 'kNumThreads' times the time each thread spun. - ASSERT_GE(end - start, kNumThreads * absl::ToInt64Nanoseconds(spin_time)); -} - -TEST(ClockGettime, JavaThreadTime) { - clockid_t clockid; - ASSERT_EQ(0, pthread_getcpuclockid(pthread_self(), &clockid)); - struct timespec tp; - ASSERT_THAT(clock_getres(clockid, &tp), SyscallSucceeds()); - EXPECT_TRUE(tp.tv_sec > 0 || tp.tv_nsec > 0); - // A thread cputime is updated each 10msec and there is no approximation - // if a task is running. - do { - ASSERT_THAT(clock_gettime(clockid, &tp), SyscallSucceeds()); - } while (tp.tv_sec == 0 && tp.tv_nsec == 0); - EXPECT_TRUE(tp.tv_sec > 0 || tp.tv_nsec > 0); -} - -// There is not much to test here, since CLOCK_REALTIME may be discontiguous. -TEST(ClockGettime, RealtimeWorks) { - struct timespec tp; - EXPECT_THAT(clock_gettime(CLOCK_REALTIME, &tp), SyscallSucceeds()); -} - -class MonotonicClockTest : public ::testing::TestWithParam<clockid_t> {}; - -TEST_P(MonotonicClockTest, IsMonotonic) { - auto end = absl::Now() + absl::Seconds(5); - - struct timespec tp; - EXPECT_THAT(clock_gettime(GetParam(), &tp), SyscallSucceeds()); - - auto prev = absl::TimeFromTimespec(tp); - while (absl::Now() < end) { - EXPECT_THAT(clock_gettime(GetParam(), &tp), SyscallSucceeds()); - auto now = absl::TimeFromTimespec(tp); - EXPECT_GE(now, prev); - prev = now; - } -} - -std::string PrintClockId(::testing::TestParamInfo<clockid_t> info) { - switch (info.param) { - case CLOCK_MONOTONIC: - return "CLOCK_MONOTONIC"; - case CLOCK_MONOTONIC_COARSE: - return "CLOCK_MONOTONIC_COARSE"; - case CLOCK_MONOTONIC_RAW: - return "CLOCK_MONOTONIC_RAW"; - case CLOCK_BOOTTIME: - // CLOCK_BOOTTIME is a monotonic clock. - return "CLOCK_BOOTTIME"; - default: - return absl::StrCat(info.param); - } -} - -INSTANTIATE_TEST_SUITE_P(ClockGettime, MonotonicClockTest, - ::testing::Values(CLOCK_MONOTONIC, - CLOCK_MONOTONIC_COARSE, - CLOCK_MONOTONIC_RAW, CLOCK_BOOTTIME), - PrintClockId); - -TEST(ClockGettime, UnimplementedReturnsEINVAL) { - SKIP_IF(!IsRunningOnGvisor()); - - struct timespec tp; - EXPECT_THAT(clock_gettime(CLOCK_REALTIME_ALARM, &tp), - SyscallFailsWithErrno(EINVAL)); - EXPECT_THAT(clock_gettime(CLOCK_BOOTTIME_ALARM, &tp), - SyscallFailsWithErrno(EINVAL)); -} - -TEST(ClockGettime, InvalidClockIDReturnsEINVAL) { - struct timespec tp; - EXPECT_THAT(clock_gettime(-1, &tp), SyscallFailsWithErrno(EINVAL)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/clock_nanosleep.cc b/test/syscalls/linux/clock_nanosleep.cc deleted file mode 100644 index b55cddc52..000000000 --- a/test/syscalls/linux/clock_nanosleep.cc +++ /dev/null @@ -1,179 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <time.h> - -#include <atomic> -#include <utility> - -#include "gtest/gtest.h" -#include "absl/time/time.h" -#include "test/util/cleanup.h" -#include "test/util/posix_error.h" -#include "test/util/signal_util.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" -#include "test/util/timer_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -// sys_clock_nanosleep is defined because the glibc clock_nanosleep returns -// error numbers directly and does not set errno. This makes our Syscall -// matchers look a little weird when expecting failure: -// "SyscallSucceedsWithValue(ERRNO)". -int sys_clock_nanosleep(clockid_t clkid, int flags, - const struct timespec* request, - struct timespec* remain) { - return syscall(SYS_clock_nanosleep, clkid, flags, request, remain); -} - -PosixErrorOr<absl::Time> GetTime(clockid_t clk) { - struct timespec ts = {}; - const int rc = clock_gettime(clk, &ts); - MaybeSave(); - if (rc < 0) { - return PosixError(errno, "clock_gettime"); - } - return absl::TimeFromTimespec(ts); -} - -class WallClockNanosleepTest : public ::testing::TestWithParam<clockid_t> {}; - -TEST_P(WallClockNanosleepTest, InvalidValues) { - const struct timespec invalid[] = { - {.tv_sec = -1, .tv_nsec = -1}, {.tv_sec = 0, .tv_nsec = INT32_MIN}, - {.tv_sec = 0, .tv_nsec = INT32_MAX}, {.tv_sec = 0, .tv_nsec = -1}, - {.tv_sec = -1, .tv_nsec = 0}, - }; - - for (auto const ts : invalid) { - EXPECT_THAT(sys_clock_nanosleep(GetParam(), 0, &ts, nullptr), - SyscallFailsWithErrno(EINVAL)); - } -} - -TEST_P(WallClockNanosleepTest, SleepOneSecond) { - constexpr absl::Duration kSleepDuration = absl::Seconds(1); - struct timespec duration = absl::ToTimespec(kSleepDuration); - - const absl::Time before = ASSERT_NO_ERRNO_AND_VALUE(GetTime(GetParam())); - EXPECT_THAT( - RetryEINTR(sys_clock_nanosleep)(GetParam(), 0, &duration, &duration), - SyscallSucceeds()); - const absl::Time after = ASSERT_NO_ERRNO_AND_VALUE(GetTime(GetParam())); - - EXPECT_GE(after - before, kSleepDuration); -} - -TEST_P(WallClockNanosleepTest, InterruptedNanosleep) { - constexpr absl::Duration kSleepDuration = absl::Seconds(60); - struct timespec duration = absl::ToTimespec(kSleepDuration); - - // Install no-op signal handler for SIGALRM. - struct sigaction sa = {}; - sigfillset(&sa.sa_mask); - sa.sa_handler = +[](int signo) {}; - const auto cleanup_sa = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGALRM, sa)); - - // Measure time since setting the alarm, since the alarm will interrupt the - // sleep and hence determine how long we sleep. - const absl::Time before = ASSERT_NO_ERRNO_AND_VALUE(GetTime(GetParam())); - - // Set an alarm to go off while sleeping. - struct itimerval timer = {}; - timer.it_value.tv_sec = 1; - timer.it_value.tv_usec = 0; - timer.it_interval.tv_sec = 1; - timer.it_interval.tv_usec = 0; - const auto cleanup = - ASSERT_NO_ERRNO_AND_VALUE(ScopedItimer(ITIMER_REAL, timer)); - - EXPECT_THAT(sys_clock_nanosleep(GetParam(), 0, &duration, &duration), - SyscallFailsWithErrno(EINTR)); - const absl::Time after = ASSERT_NO_ERRNO_AND_VALUE(GetTime(GetParam())); - - // Remaining time updated. - const absl::Duration remaining = absl::DurationFromTimespec(duration); - EXPECT_GE(after - before + remaining, kSleepDuration); -} - -// Remaining time is *not* updated if nanosleep completes uninterrupted. -TEST_P(WallClockNanosleepTest, UninterruptedNanosleep) { - constexpr absl::Duration kSleepDuration = absl::Milliseconds(10); - const struct timespec duration = absl::ToTimespec(kSleepDuration); - - while (true) { - constexpr int kRemainingMagic = 42; - struct timespec remaining; - remaining.tv_sec = kRemainingMagic; - remaining.tv_nsec = kRemainingMagic; - - int ret = sys_clock_nanosleep(GetParam(), 0, &duration, &remaining); - if (ret == EINTR) { - // Retry from beginning. We want a single uninterrupted call. - continue; - } - - EXPECT_THAT(ret, SyscallSucceeds()); - EXPECT_EQ(remaining.tv_sec, kRemainingMagic); - EXPECT_EQ(remaining.tv_nsec, kRemainingMagic); - break; - } -} - -TEST_P(WallClockNanosleepTest, SleepUntil) { - const absl::Time now = ASSERT_NO_ERRNO_AND_VALUE(GetTime(GetParam())); - const absl::Time until = now + absl::Seconds(2); - const struct timespec ts = absl::ToTimespec(until); - - EXPECT_THAT( - RetryEINTR(sys_clock_nanosleep)(GetParam(), TIMER_ABSTIME, &ts, nullptr), - SyscallSucceeds()); - const absl::Time after = ASSERT_NO_ERRNO_AND_VALUE(GetTime(GetParam())); - - EXPECT_GE(after, until); -} - -INSTANTIATE_TEST_SUITE_P(Sleepers, WallClockNanosleepTest, - ::testing::Values(CLOCK_REALTIME, CLOCK_MONOTONIC)); - -TEST(ClockNanosleepProcessTest, SleepFiveSeconds) { - const absl::Duration kSleepDuration = absl::Seconds(5); - struct timespec duration = absl::ToTimespec(kSleepDuration); - - // Ensure that CLOCK_PROCESS_CPUTIME_ID advances. - std::atomic<bool> done(false); - ScopedThread t([&] { - while (!done.load()) { - } - }); - const auto cleanup_done = Cleanup([&] { done.store(true); }); - - const absl::Time before = - ASSERT_NO_ERRNO_AND_VALUE(GetTime(CLOCK_PROCESS_CPUTIME_ID)); - EXPECT_THAT(RetryEINTR(sys_clock_nanosleep)(CLOCK_PROCESS_CPUTIME_ID, 0, - &duration, &duration), - SyscallSucceeds()); - const absl::Time after = - ASSERT_NO_ERRNO_AND_VALUE(GetTime(CLOCK_PROCESS_CPUTIME_ID)); - EXPECT_GE(after - before, kSleepDuration); -} -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/concurrency.cc b/test/syscalls/linux/concurrency.cc deleted file mode 100644 index 7cd6a75bd..000000000 --- a/test/syscalls/linux/concurrency.cc +++ /dev/null @@ -1,127 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <signal.h> - -#include <atomic> - -#include "gtest/gtest.h" -#include "absl/strings/string_view.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/util/platform_util.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { -namespace { - -// Test that a thread that never yields to the OS does not prevent other threads -// from running. -TEST(ConcurrencyTest, SingleProcessMultithreaded) { - std::atomic<int> a(0); - - ScopedThread t([&a]() { - while (!a.load()) { - } - }); - - absl::SleepFor(absl::Seconds(1)); - - // We are still able to execute code in this thread. The other hasn't - // permanently hung execution in both threads. - a.store(1); -} - -// Test that multiple threads in this process continue to execute in parallel, -// even if an unrelated second process is spawned. Regression test for -// b/32119508. -TEST(ConcurrencyTest, MultiProcessMultithreaded) { - // In PID 1, start TIDs 1 and 2, and put both to sleep. - // - // Start PID 3, which spins for 5 seconds, then exits. - // - // TIDs 1 and 2 wake and attempt to Activate, which cannot occur until PID 3 - // exits. - // - // Both TIDs 1 and 2 should be woken. If they are not both woken, the test - // hangs. - // - // This is all fundamentally racy. If we are failing to wake all threads, the - // expectation is that this test becomes flaky, rather than consistently - // failing. - // - // If additional background threads fail to block, we may never schedule the - // child, at which point this test effectively becomes - // MultiProcessConcurrency. That's not expected to occur. - - std::atomic<int> a(0); - ScopedThread t([&a]() { - // Block so that PID 3 can execute and we can wait on its exit. - absl::SleepFor(absl::Seconds(1)); - while (!a.load()) { - } - }); - - pid_t child_pid = fork(); - if (child_pid == 0) { - // Busy wait without making any blocking syscalls. - auto end = absl::Now() + absl::Seconds(5); - while (absl::Now() < end) { - } - _exit(0); - } - ASSERT_THAT(child_pid, SyscallSucceeds()); - - absl::SleepFor(absl::Seconds(1)); - - // If only TID 1 is woken, thread.Join will hang. - // If only TID 2 is woken, both will hang. - a.store(1); - t.Join(); - - int status = 0; - EXPECT_THAT(RetryEINTR(waitpid)(child_pid, &status, 0), SyscallSucceeds()); - EXPECT_TRUE(WIFEXITED(status)); - EXPECT_EQ(WEXITSTATUS(status), 0); -} - -// Test that multiple processes can execute concurrently, even if one process -// never yields. -TEST(ConcurrencyTest, MultiProcessConcurrency) { - SKIP_IF(PlatformSupportMultiProcess() == PlatformSupport::NotSupported); - - pid_t child_pid = fork(); - if (child_pid == 0) { - while (true) { - } - } - ASSERT_THAT(child_pid, SyscallSucceeds()); - - absl::SleepFor(absl::Seconds(5)); - - // We are still able to execute code in this process. The other hasn't - // permanently hung execution in both processes. - ASSERT_THAT(kill(child_pid, SIGKILL), SyscallSucceeds()); - int status = 0; - - ASSERT_THAT(RetryEINTR(waitpid)(child_pid, &status, 0), SyscallSucceeds()); - ASSERT_TRUE(WIFSIGNALED(status)); - ASSERT_EQ(WTERMSIG(status), SIGKILL); -} - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/connect_external.cc b/test/syscalls/linux/connect_external.cc deleted file mode 100644 index 1edb50e47..000000000 --- a/test/syscalls/linux/connect_external.cc +++ /dev/null @@ -1,163 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <stdlib.h> -#include <sys/socket.h> -#include <sys/types.h> -#include <sys/un.h> - -#include <string> -#include <tuple> - -#include "gtest/gtest.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/fs_util.h" -#include "test/util/test_util.h" - -// This file contains tests specific to connecting to host UDS managed outside -// the sandbox / test. -// -// A set of ultity sockets will be created externally in $TEST_UDS_TREE and -// $TEST_UDS_ATTACH_TREE for these tests to interact with. - -namespace gvisor { -namespace testing { - -namespace { - -struct ProtocolSocket { - int protocol; - std::string name; -}; - -// Parameter is (socket root dir, ProtocolSocket). -using GoferStreamSeqpacketTest = - ::testing::TestWithParam<std::tuple<std::string, ProtocolSocket>>; - -// Connect to a socket and verify that write/read work. -// -// An "echo" socket doesn't work for dgram sockets because our socket is -// unnamed. The server thus has no way to reply to us. -TEST_P(GoferStreamSeqpacketTest, Echo) { - std::string env; - ProtocolSocket proto; - std::tie(env, proto) = GetParam(); - - char* val = getenv(env.c_str()); - ASSERT_NE(val, nullptr); - std::string root(val); - - FileDescriptor sock = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_UNIX, proto.protocol, 0)); - - std::string socket_path = JoinPath(root, proto.name, "echo"); - - struct sockaddr_un addr = {}; - addr.sun_family = AF_UNIX; - memcpy(addr.sun_path, socket_path.c_str(), socket_path.length()); - - ASSERT_THAT(connect(sock.get(), reinterpret_cast<struct sockaddr*>(&addr), - sizeof(addr)), - SyscallSucceeds()); - - constexpr int kBufferSize = 64; - char send_buffer[kBufferSize]; - memset(send_buffer, 'a', sizeof(send_buffer)); - - ASSERT_THAT(WriteFd(sock.get(), send_buffer, sizeof(send_buffer)), - SyscallSucceedsWithValue(sizeof(send_buffer))); - - char recv_buffer[kBufferSize]; - ASSERT_THAT(ReadFd(sock.get(), recv_buffer, sizeof(recv_buffer)), - SyscallSucceedsWithValue(sizeof(recv_buffer))); - ASSERT_EQ(0, memcmp(send_buffer, recv_buffer, sizeof(send_buffer))); -} - -// It is not possible to connect to a bound but non-listening socket. -TEST_P(GoferStreamSeqpacketTest, NonListening) { - std::string env; - ProtocolSocket proto; - std::tie(env, proto) = GetParam(); - - char* val = getenv(env.c_str()); - ASSERT_NE(val, nullptr); - std::string root(val); - - FileDescriptor sock = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_UNIX, proto.protocol, 0)); - - std::string socket_path = JoinPath(root, proto.name, "nonlistening"); - - struct sockaddr_un addr = {}; - addr.sun_family = AF_UNIX; - memcpy(addr.sun_path, socket_path.c_str(), socket_path.length()); - - ASSERT_THAT(connect(sock.get(), reinterpret_cast<struct sockaddr*>(&addr), - sizeof(addr)), - SyscallFailsWithErrno(ECONNREFUSED)); -} - -INSTANTIATE_TEST_SUITE_P( - StreamSeqpacket, GoferStreamSeqpacketTest, - ::testing::Combine( - // Test access via standard path and attach point. - ::testing::Values("TEST_UDS_TREE", "TEST_UDS_ATTACH_TREE"), - ::testing::Values(ProtocolSocket{SOCK_STREAM, "stream"}, - ProtocolSocket{SOCK_SEQPACKET, "seqpacket"}))); - -// Parameter is socket root dir. -using GoferDgramTest = ::testing::TestWithParam<std::string>; - -// Connect to a socket and verify that write works. -// -// An "echo" socket doesn't work for dgram sockets because our socket is -// unnamed. The server thus has no way to reply to us. -TEST_P(GoferDgramTest, Null) { - std::string env = GetParam(); - char* val = getenv(env.c_str()); - ASSERT_NE(val, nullptr); - std::string root(val); - - FileDescriptor sock = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_UNIX, SOCK_DGRAM, 0)); - - std::string socket_path = JoinPath(root, "dgram/null"); - - struct sockaddr_un addr = {}; - addr.sun_family = AF_UNIX; - memcpy(addr.sun_path, socket_path.c_str(), socket_path.length()); - - ASSERT_THAT(connect(sock.get(), reinterpret_cast<struct sockaddr*>(&addr), - sizeof(addr)), - SyscallSucceeds()); - - constexpr int kBufferSize = 64; - char send_buffer[kBufferSize]; - memset(send_buffer, 'a', sizeof(send_buffer)); - - ASSERT_THAT(WriteFd(sock.get(), send_buffer, sizeof(send_buffer)), - SyscallSucceedsWithValue(sizeof(send_buffer))); -} - -INSTANTIATE_TEST_SUITE_P(Dgram, GoferDgramTest, - // Test access via standard path and attach point. - ::testing::Values("TEST_UDS_TREE", - "TEST_UDS_ATTACH_TREE")); - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/creat.cc b/test/syscalls/linux/creat.cc deleted file mode 100644 index 3c270d6da..000000000 --- a/test/syscalls/linux/creat.cc +++ /dev/null @@ -1,68 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <fcntl.h> -#include <sys/stat.h> -#include <sys/types.h> - -#include <string> - -#include "gtest/gtest.h" -#include "test/util/fs_util.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -constexpr int kMode = 0666; - -TEST(CreatTest, CreatCreatesNewFile) { - std::string const path = NewTempAbsPath(); - struct stat buf; - int fd; - ASSERT_THAT(stat(path.c_str(), &buf), SyscallFailsWithErrno(ENOENT)); - ASSERT_THAT(fd = creat(path.c_str(), kMode), SyscallSucceeds()); - EXPECT_THAT(close(fd), SyscallSucceeds()); - EXPECT_THAT(stat(path.c_str(), &buf), SyscallSucceeds()); -} - -TEST(CreatTest, CreatTruncatesExistingFile) { - auto temp_path = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - int fd; - ASSERT_NO_ERRNO(SetContents(temp_path.path(), "non-empty")); - ASSERT_THAT(fd = creat(temp_path.path().c_str(), kMode), SyscallSucceeds()); - EXPECT_THAT(close(fd), SyscallSucceeds()); - std::string new_contents; - ASSERT_NO_ERRNO(GetContents(temp_path.path(), &new_contents)); - EXPECT_EQ("", new_contents); -} - -TEST(CreatTest, CreatWithNameTooLong) { - // Start with a unique name, and pad it to NAME_MAX + 1; - std::string name = NewTempRelPath(); - int padding = (NAME_MAX + 1) - name.size(); - name.append(padding, 'x'); - const std::string& path = JoinPath(GetAbsoluteTestTmpdir(), name); - - // Creation should return ENAMETOOLONG. - ASSERT_THAT(creat(path.c_str(), kMode), SyscallFailsWithErrno(ENAMETOOLONG)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/dev.cc b/test/syscalls/linux/dev.cc deleted file mode 100644 index 4dd302eed..000000000 --- a/test/syscalls/linux/dev.cc +++ /dev/null @@ -1,159 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <fcntl.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <unistd.h> - -#include <vector> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "test/util/file_descriptor.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -TEST(DevTest, LseekDevUrandom) { - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/urandom", O_RDONLY)); - EXPECT_THAT(lseek(fd.get(), -10, SEEK_CUR), SyscallSucceeds()); - EXPECT_THAT(lseek(fd.get(), -10, SEEK_SET), SyscallSucceeds()); - EXPECT_THAT(lseek(fd.get(), 0, SEEK_CUR), SyscallSucceeds()); -} - -TEST(DevTest, LseekDevNull) { - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/null", O_RDONLY)); - EXPECT_THAT(lseek(fd.get(), -10, SEEK_CUR), SyscallSucceeds()); - EXPECT_THAT(lseek(fd.get(), -10, SEEK_SET), SyscallSucceeds()); - EXPECT_THAT(lseek(fd.get(), 0, SEEK_CUR), SyscallSucceeds()); - EXPECT_THAT(lseek(fd.get(), 0, SEEK_END), SyscallSucceeds()); -} - -TEST(DevTest, LseekDevZero) { - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/zero", O_RDONLY)); - EXPECT_THAT(lseek(fd.get(), 0, SEEK_CUR), SyscallSucceeds()); - EXPECT_THAT(lseek(fd.get(), 0, SEEK_END), SyscallSucceeds()); -} - -TEST(DevTest, LseekDevFull) { - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/full", O_RDONLY)); - EXPECT_THAT(lseek(fd.get(), 123, SEEK_SET), SyscallSucceedsWithValue(0)); - EXPECT_THAT(lseek(fd.get(), 123, SEEK_CUR), SyscallSucceedsWithValue(0)); - EXPECT_THAT(lseek(fd.get(), 123, SEEK_END), SyscallSucceedsWithValue(0)); -} - -TEST(DevTest, LseekDevNullFreshFile) { - // Seeks to /dev/null always return 0. - const FileDescriptor fd1 = - ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/null", O_RDONLY)); - const FileDescriptor fd2 = - ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/null", O_RDONLY)); - - EXPECT_THAT(lseek(fd1.get(), 0, SEEK_CUR), SyscallSucceedsWithValue(0)); - EXPECT_THAT(lseek(fd1.get(), 1000, SEEK_CUR), SyscallSucceedsWithValue(0)); - EXPECT_THAT(lseek(fd2.get(), 0, SEEK_CUR), SyscallSucceedsWithValue(0)); - - const FileDescriptor fd3 = - ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/null", O_RDONLY)); - EXPECT_THAT(lseek(fd3.get(), 0, SEEK_CUR), SyscallSucceedsWithValue(0)); -} - -TEST(DevTest, OpenTruncate) { - // Truncation is ignored on linux and gvisor for device files. - ASSERT_NO_ERRNO_AND_VALUE( - Open("/dev/null", O_CREAT | O_TRUNC | O_WRONLY, 0644)); - ASSERT_NO_ERRNO_AND_VALUE( - Open("/dev/zero", O_CREAT | O_TRUNC | O_WRONLY, 0644)); - ASSERT_NO_ERRNO_AND_VALUE( - Open("/dev/full", O_CREAT | O_TRUNC | O_WRONLY, 0644)); -} - -TEST(DevTest, Pread64DevNull) { - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/null", O_RDONLY)); - char buf[1]; - EXPECT_THAT(pread64(fd.get(), buf, 1, 0), SyscallSucceedsWithValue(0)); -} - -TEST(DevTest, Pread64DevZero) { - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/zero", O_RDONLY)); - char buf[1]; - EXPECT_THAT(pread64(fd.get(), buf, 1, 0), SyscallSucceedsWithValue(1)); -} - -TEST(DevTest, Pread64DevFull) { - // /dev/full behaves like /dev/zero with respect to reads. - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/full", O_RDONLY)); - char buf[1]; - EXPECT_THAT(pread64(fd.get(), buf, 1, 0), SyscallSucceedsWithValue(1)); -} - -TEST(DevTest, ReadDevNull) { - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/null", O_RDONLY)); - std::vector<char> buf(1); - EXPECT_THAT(ReadFd(fd.get(), buf.data(), 1), SyscallSucceeds()); -} - -// Do not allow random save as it could lead to partial reads. -TEST(DevTest, ReadDevZero_NoRandomSave) { - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/zero", O_RDONLY)); - - constexpr int kReadSize = 128 * 1024; - std::vector<char> buf(kReadSize, 1); - EXPECT_THAT(ReadFd(fd.get(), buf.data(), kReadSize), - SyscallSucceedsWithValue(kReadSize)); - EXPECT_EQ(std::vector<char>(kReadSize, 0), buf); -} - -TEST(DevTest, WriteDevNull) { - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/null", O_WRONLY)); - EXPECT_THAT(WriteFd(fd.get(), "a", 1), SyscallSucceedsWithValue(1)); -} - -TEST(DevTest, WriteDevZero) { - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/zero", O_WRONLY)); - EXPECT_THAT(WriteFd(fd.get(), "a", 1), SyscallSucceedsWithValue(1)); -} - -TEST(DevTest, WriteDevFull) { - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/full", O_WRONLY)); - EXPECT_THAT(WriteFd(fd.get(), "a", 1), SyscallFailsWithErrno(ENOSPC)); -} - -TEST(DevTest, TTYExists) { - struct stat statbuf = {}; - ASSERT_THAT(stat("/dev/tty", &statbuf), SyscallSucceeds()); - // Check that it's a character device with rw-rw-rw- permissions. - EXPECT_EQ(statbuf.st_mode, S_IFCHR | 0666); -} - -} // namespace -} // namespace testing - -} // namespace gvisor diff --git a/test/syscalls/linux/dup.cc b/test/syscalls/linux/dup.cc deleted file mode 100644 index 4f773bc75..000000000 --- a/test/syscalls/linux/dup.cc +++ /dev/null @@ -1,133 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <fcntl.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "test/util/eventfd_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/posix_error.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -PosixErrorOr<FileDescriptor> Dup2(const FileDescriptor& fd, int target_fd) { - int new_fd = dup2(fd.get(), target_fd); - if (new_fd < 0) { - return PosixError(errno, "Dup2"); - } - return FileDescriptor(new_fd); -} - -PosixErrorOr<FileDescriptor> Dup3(const FileDescriptor& fd, int target_fd, - int flags) { - int new_fd = dup3(fd.get(), target_fd, flags); - if (new_fd < 0) { - return PosixError(errno, "Dup2"); - } - return FileDescriptor(new_fd); -} - -void CheckSameFile(const FileDescriptor& fd1, const FileDescriptor& fd2) { - struct stat stat_result1, stat_result2; - ASSERT_THAT(fstat(fd1.get(), &stat_result1), SyscallSucceeds()); - ASSERT_THAT(fstat(fd2.get(), &stat_result2), SyscallSucceeds()); - EXPECT_EQ(stat_result1.st_dev, stat_result2.st_dev); - EXPECT_EQ(stat_result1.st_ino, stat_result2.st_ino); -} - -TEST(DupTest, Dup) { - auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(f.path(), O_RDONLY)); - - // Dup the descriptor and make sure it's the same file. - FileDescriptor nfd = ASSERT_NO_ERRNO_AND_VALUE(fd.Dup()); - ASSERT_NE(fd.get(), nfd.get()); - CheckSameFile(fd, nfd); -} - -TEST(DupTest, DupClearsCloExec) { - // Open an eventfd file descriptor with FD_CLOEXEC descriptor flag set. - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(NewEventFD(0, EFD_CLOEXEC)); - EXPECT_THAT(fcntl(fd.get(), F_GETFD), SyscallSucceedsWithValue(FD_CLOEXEC)); - - // Duplicate the descriptor. Ensure that it doesn't have FD_CLOEXEC set. - FileDescriptor nfd = ASSERT_NO_ERRNO_AND_VALUE(fd.Dup()); - ASSERT_NE(fd.get(), nfd.get()); - CheckSameFile(fd, nfd); - EXPECT_THAT(fcntl(nfd.get(), F_GETFD), SyscallSucceedsWithValue(0)); -} - -TEST(DupTest, Dup2) { - auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(f.path(), O_RDONLY)); - - // Regular dup once. - FileDescriptor nfd = ASSERT_NO_ERRNO_AND_VALUE(fd.Dup()); - - ASSERT_NE(fd.get(), nfd.get()); - CheckSameFile(fd, nfd); - - // Dup over the file above. - int target_fd = nfd.release(); - FileDescriptor nfd2 = ASSERT_NO_ERRNO_AND_VALUE(Dup2(fd, target_fd)); - EXPECT_EQ(target_fd, nfd2.get()); - CheckSameFile(fd, nfd2); -} - -TEST(DupTest, Dup2SameFD) { - auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(f.path(), O_RDONLY)); - - // Should succeed. - ASSERT_THAT(dup2(fd.get(), fd.get()), SyscallSucceedsWithValue(fd.get())); -} - -TEST(DupTest, Dup3) { - auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(f.path(), O_RDONLY)); - - // Regular dup once. - FileDescriptor nfd = ASSERT_NO_ERRNO_AND_VALUE(fd.Dup()); - ASSERT_NE(fd.get(), nfd.get()); - CheckSameFile(fd, nfd); - - // Dup over the file above, check that it has no CLOEXEC. - nfd = ASSERT_NO_ERRNO_AND_VALUE(Dup3(fd, nfd.release(), 0)); - CheckSameFile(fd, nfd); - EXPECT_THAT(fcntl(nfd.get(), F_GETFD), SyscallSucceedsWithValue(0)); - - // Dup over the file again, check that it does not CLOEXEC. - nfd = ASSERT_NO_ERRNO_AND_VALUE(Dup3(fd, nfd.release(), O_CLOEXEC)); - CheckSameFile(fd, nfd); - EXPECT_THAT(fcntl(nfd.get(), F_GETFD), SyscallSucceedsWithValue(FD_CLOEXEC)); -} - -TEST(DupTest, Dup3FailsSameFD) { - auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(f.path(), O_RDONLY)); - - // Only dup3 fails if the new and old fd are the same. - ASSERT_THAT(dup3(fd.get(), fd.get(), 0), SyscallFailsWithErrno(EINVAL)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/epoll.cc b/test/syscalls/linux/epoll.cc deleted file mode 100644 index a4f8f3cec..000000000 --- a/test/syscalls/linux/epoll.cc +++ /dev/null @@ -1,432 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <limits.h> -#include <pthread.h> -#include <signal.h> -#include <stdint.h> -#include <stdio.h> -#include <string.h> -#include <sys/epoll.h> -#include <sys/eventfd.h> -#include <time.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "test/util/epoll_util.h" -#include "test/util/eventfd_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/posix_error.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -constexpr int kFDsPerEpoll = 3; -constexpr uint64_t kMagicConstant = 0x0102030405060708; - -uint64_t ms_elapsed(const struct timespec* begin, const struct timespec* end) { - return (end->tv_sec - begin->tv_sec) * 1000 + - (end->tv_nsec - begin->tv_nsec) / 1000000; -} - -TEST(EpollTest, AllWritable) { - auto epollfd = ASSERT_NO_ERRNO_AND_VALUE(NewEpollFD()); - std::vector<FileDescriptor> eventfds; - for (int i = 0; i < kFDsPerEpoll; i++) { - eventfds.push_back(ASSERT_NO_ERRNO_AND_VALUE(NewEventFD())); - ASSERT_NO_ERRNO(RegisterEpollFD(epollfd.get(), eventfds[i].get(), - EPOLLIN | EPOLLOUT, kMagicConstant + i)); - } - - struct epoll_event result[kFDsPerEpoll]; - ASSERT_THAT(RetryEINTR(epoll_wait)(epollfd.get(), result, kFDsPerEpoll, -1), - SyscallSucceedsWithValue(kFDsPerEpoll)); - // TODO(edahlgren): Why do some tests check epoll_event::data, and others - // don't? Does Linux actually guarantee that, in any of these test cases, - // epoll_wait will necessarily write out the epoll_events in the order that - // they were registered? - for (int i = 0; i < kFDsPerEpoll; i++) { - ASSERT_EQ(result[i].events, EPOLLOUT); - } -} - -TEST(EpollTest, LastReadable) { - auto epollfd = ASSERT_NO_ERRNO_AND_VALUE(NewEpollFD()); - std::vector<FileDescriptor> eventfds; - for (int i = 0; i < kFDsPerEpoll; i++) { - eventfds.push_back(ASSERT_NO_ERRNO_AND_VALUE(NewEventFD())); - ASSERT_NO_ERRNO(RegisterEpollFD(epollfd.get(), eventfds[i].get(), - EPOLLIN | EPOLLOUT, kMagicConstant + i)); - } - - uint64_t tmp = 1; - ASSERT_THAT(WriteFd(eventfds[kFDsPerEpoll - 1].get(), &tmp, sizeof(tmp)), - SyscallSucceedsWithValue(sizeof(tmp))); - - struct epoll_event result[kFDsPerEpoll]; - ASSERT_THAT(RetryEINTR(epoll_wait)(epollfd.get(), result, kFDsPerEpoll, -1), - SyscallSucceedsWithValue(kFDsPerEpoll)); - - int i; - for (i = 0; i < kFDsPerEpoll - 1; i++) { - EXPECT_EQ(result[i].events, EPOLLOUT); - } - EXPECT_EQ(result[i].events, EPOLLOUT | EPOLLIN); - EXPECT_EQ(result[i].data.u64, kMagicConstant + i); -} - -TEST(EpollTest, LastNonWritable) { - auto epollfd = ASSERT_NO_ERRNO_AND_VALUE(NewEpollFD()); - std::vector<FileDescriptor> eventfds; - for (int i = 0; i < kFDsPerEpoll; i++) { - eventfds.push_back(ASSERT_NO_ERRNO_AND_VALUE(NewEventFD())); - ASSERT_NO_ERRNO(RegisterEpollFD(epollfd.get(), eventfds[i].get(), - EPOLLIN | EPOLLOUT, kMagicConstant + i)); - } - - // Write the maximum value to the event fd so that writing to it again would - // block. - uint64_t tmp = ULLONG_MAX - 1; - ASSERT_THAT(WriteFd(eventfds[kFDsPerEpoll - 1].get(), &tmp, sizeof(tmp)), - SyscallSucceedsWithValue(sizeof(tmp))); - - struct epoll_event result[kFDsPerEpoll]; - ASSERT_THAT(RetryEINTR(epoll_wait)(epollfd.get(), result, kFDsPerEpoll, -1), - SyscallSucceedsWithValue(kFDsPerEpoll)); - - int i; - for (i = 0; i < kFDsPerEpoll - 1; i++) { - EXPECT_EQ(result[i].events, EPOLLOUT); - } - EXPECT_EQ(result[i].events, EPOLLIN); - EXPECT_THAT(ReadFd(eventfds[kFDsPerEpoll - 1].get(), &tmp, sizeof(tmp)), - sizeof(tmp)); - EXPECT_THAT(RetryEINTR(epoll_wait)(epollfd.get(), result, kFDsPerEpoll, -1), - SyscallSucceedsWithValue(kFDsPerEpoll)); - - for (i = 0; i < kFDsPerEpoll; i++) { - EXPECT_EQ(result[i].events, EPOLLOUT); - } -} - -TEST(EpollTest, Timeout_NoRandomSave) { - auto epollfd = ASSERT_NO_ERRNO_AND_VALUE(NewEpollFD()); - std::vector<FileDescriptor> eventfds; - for (int i = 0; i < kFDsPerEpoll; i++) { - eventfds.push_back(ASSERT_NO_ERRNO_AND_VALUE(NewEventFD())); - ASSERT_NO_ERRNO(RegisterEpollFD(epollfd.get(), eventfds[i].get(), EPOLLIN, - kMagicConstant + i)); - } - - constexpr int kTimeoutMs = 200; - struct timespec begin; - struct timespec end; - struct epoll_event result[kFDsPerEpoll]; - - { - const DisableSave ds; // Timing-related. - EXPECT_THAT(clock_gettime(CLOCK_MONOTONIC, &begin), SyscallSucceeds()); - - ASSERT_THAT( - RetryEINTR(epoll_wait)(epollfd.get(), result, kFDsPerEpoll, kTimeoutMs), - SyscallSucceedsWithValue(0)); - EXPECT_THAT(clock_gettime(CLOCK_MONOTONIC, &end), SyscallSucceeds()); - } - - // Check the lower bound on the timeout. Checking for an upper bound is - // fragile because Linux can overrun the timeout due to scheduling delays. - EXPECT_GT(ms_elapsed(&begin, &end), kTimeoutMs - 1); -} - -void* writer(void* arg) { - int fd = *reinterpret_cast<int*>(arg); - uint64_t tmp = 1; - - usleep(200000); - if (WriteFd(fd, &tmp, sizeof(tmp)) != sizeof(tmp)) { - fprintf(stderr, "writer failed: errno %s\n", strerror(errno)); - } - - return nullptr; -} - -TEST(EpollTest, WaitThenUnblock) { - auto epollfd = ASSERT_NO_ERRNO_AND_VALUE(NewEpollFD()); - std::vector<FileDescriptor> eventfds; - for (int i = 0; i < kFDsPerEpoll; i++) { - eventfds.push_back(ASSERT_NO_ERRNO_AND_VALUE(NewEventFD())); - ASSERT_NO_ERRNO(RegisterEpollFD(epollfd.get(), eventfds[i].get(), EPOLLIN, - kMagicConstant + i)); - } - - // Fire off a thread that will make at least one of the event fds readable. - pthread_t thread; - int make_readable = eventfds[0].get(); - ASSERT_THAT(pthread_create(&thread, nullptr, writer, &make_readable), - SyscallSucceedsWithValue(0)); - - struct epoll_event result[kFDsPerEpoll]; - EXPECT_THAT(RetryEINTR(epoll_wait)(epollfd.get(), result, kFDsPerEpoll, -1), - SyscallSucceedsWithValue(1)); - EXPECT_THAT(pthread_detach(thread), SyscallSucceeds()); -} - -void sighandler(int s) {} - -void* signaler(void* arg) { - pthread_t* t = reinterpret_cast<pthread_t*>(arg); - // Repeatedly send the real-time signal until we are detached, because it's - // difficult to know exactly when epoll_wait on another thread (which this - // is intending to interrupt) has started blocking. - while (1) { - usleep(200000); - pthread_kill(*t, SIGRTMIN); - } - return nullptr; -} - -TEST(EpollTest, UnblockWithSignal) { - auto epollfd = ASSERT_NO_ERRNO_AND_VALUE(NewEpollFD()); - std::vector<FileDescriptor> eventfds; - for (int i = 0; i < kFDsPerEpoll; i++) { - eventfds.push_back(ASSERT_NO_ERRNO_AND_VALUE(NewEventFD())); - ASSERT_NO_ERRNO(RegisterEpollFD(epollfd.get(), eventfds[i].get(), EPOLLIN, - kMagicConstant + i)); - } - - signal(SIGRTMIN, sighandler); - // Unblock the real time signals that InitGoogle blocks :( - sigset_t unblock; - sigemptyset(&unblock); - sigaddset(&unblock, SIGRTMIN); - ASSERT_THAT(sigprocmask(SIG_UNBLOCK, &unblock, nullptr), SyscallSucceeds()); - - pthread_t thread; - pthread_t cur = pthread_self(); - ASSERT_THAT(pthread_create(&thread, nullptr, signaler, &cur), - SyscallSucceedsWithValue(0)); - - struct epoll_event result[kFDsPerEpoll]; - EXPECT_THAT(epoll_wait(epollfd.get(), result, kFDsPerEpoll, -1), - SyscallFailsWithErrno(EINTR)); - EXPECT_THAT(pthread_cancel(thread), SyscallSucceeds()); - EXPECT_THAT(pthread_detach(thread), SyscallSucceeds()); -} - -TEST(EpollTest, TimeoutNoFds) { - auto epollfd = ASSERT_NO_ERRNO_AND_VALUE(NewEpollFD()); - struct epoll_event result[kFDsPerEpoll]; - EXPECT_THAT(RetryEINTR(epoll_wait)(epollfd.get(), result, kFDsPerEpoll, 100), - SyscallSucceedsWithValue(0)); -} - -struct addr_ctx { - int epollfd; - int eventfd; -}; - -void* fd_adder(void* arg) { - struct addr_ctx* actx = reinterpret_cast<struct addr_ctx*>(arg); - struct epoll_event event; - event.events = EPOLLIN | EPOLLOUT; - event.data.u64 = 0xdeadbeeffacefeed; - - usleep(200000); - if (epoll_ctl(actx->epollfd, EPOLL_CTL_ADD, actx->eventfd, &event) == -1) { - fprintf(stderr, "epoll_ctl failed: %s\n", strerror(errno)); - } - - return nullptr; -} - -TEST(EpollTest, UnblockWithNewFD) { - auto epollfd = ASSERT_NO_ERRNO_AND_VALUE(NewEpollFD()); - auto eventfd = ASSERT_NO_ERRNO_AND_VALUE(NewEventFD()); - - pthread_t thread; - struct addr_ctx actx = {epollfd.get(), eventfd.get()}; - ASSERT_THAT(pthread_create(&thread, nullptr, fd_adder, &actx), - SyscallSucceedsWithValue(0)); - - struct epoll_event result[kFDsPerEpoll]; - // Wait while no FDs are ready, but after 200ms fd_adder will add a ready FD - // to epoll which will wake us up. - EXPECT_THAT(RetryEINTR(epoll_wait)(epollfd.get(), result, kFDsPerEpoll, -1), - SyscallSucceedsWithValue(1)); - EXPECT_THAT(pthread_detach(thread), SyscallSucceeds()); - EXPECT_EQ(result[0].data.u64, 0xdeadbeeffacefeed); -} - -TEST(EpollTest, Oneshot) { - auto epollfd = ASSERT_NO_ERRNO_AND_VALUE(NewEpollFD()); - std::vector<FileDescriptor> eventfds; - for (int i = 0; i < kFDsPerEpoll; i++) { - eventfds.push_back(ASSERT_NO_ERRNO_AND_VALUE(NewEventFD())); - ASSERT_NO_ERRNO(RegisterEpollFD(epollfd.get(), eventfds[i].get(), EPOLLIN, - kMagicConstant + i)); - } - - struct epoll_event event; - event.events = EPOLLOUT | EPOLLONESHOT; - event.data.u64 = kMagicConstant; - ASSERT_THAT( - epoll_ctl(epollfd.get(), EPOLL_CTL_MOD, eventfds[0].get(), &event), - SyscallSucceeds()); - - struct epoll_event result[kFDsPerEpoll]; - // One-shot entry means that the first epoll_wait should succeed. - ASSERT_THAT(RetryEINTR(epoll_wait)(epollfd.get(), result, kFDsPerEpoll, -1), - SyscallSucceedsWithValue(1)); - EXPECT_EQ(result[0].data.u64, kMagicConstant); - - // One-shot entry means that the second epoll_wait should timeout. - EXPECT_THAT(RetryEINTR(epoll_wait)(epollfd.get(), result, kFDsPerEpoll, 100), - SyscallSucceedsWithValue(0)); -} - -TEST(EpollTest, EdgeTriggered_NoRandomSave) { - // Test edge-triggered entry: make it edge-triggered, first wait should - // return it, second one should time out, make it writable again, third wait - // should return it, fourth wait should timeout. - auto epollfd = ASSERT_NO_ERRNO_AND_VALUE(NewEpollFD()); - auto eventfd = ASSERT_NO_ERRNO_AND_VALUE(NewEventFD()); - ASSERT_NO_ERRNO(RegisterEpollFD(epollfd.get(), eventfd.get(), - EPOLLOUT | EPOLLET, kMagicConstant)); - - struct epoll_event result[kFDsPerEpoll]; - - { - const DisableSave ds; // May trigger spurious event. - - // Edge-triggered entry means that the first epoll_wait should return the - // event. - ASSERT_THAT(epoll_wait(epollfd.get(), result, kFDsPerEpoll, -1), - SyscallSucceedsWithValue(1)); - EXPECT_EQ(result[0].data.u64, kMagicConstant); - - // Edge-triggered entry means that the second epoll_wait should time out. - ASSERT_THAT(epoll_wait(epollfd.get(), result, kFDsPerEpoll, 100), - SyscallSucceedsWithValue(0)); - } - - uint64_t tmp = ULLONG_MAX - 1; - - // Make an fd non-writable. - ASSERT_THAT(WriteFd(eventfd.get(), &tmp, sizeof(tmp)), - SyscallSucceedsWithValue(sizeof(tmp))); - - // Make the same fd non-writable to trigger a change, which will trigger an - // edge-triggered event. - ASSERT_THAT(ReadFd(eventfd.get(), &tmp, sizeof(tmp)), - SyscallSucceedsWithValue(sizeof(tmp))); - - { - const DisableSave ds; // May trigger spurious event. - - // An edge-triggered event should now be returned. - ASSERT_THAT(epoll_wait(epollfd.get(), result, kFDsPerEpoll, -1), - SyscallSucceedsWithValue(1)); - EXPECT_EQ(result[0].data.u64, kMagicConstant); - - // The edge-triggered event had been consumed above, we don't expect to - // get it again. - ASSERT_THAT(epoll_wait(epollfd.get(), result, kFDsPerEpoll, 100), - SyscallSucceedsWithValue(0)); - } -} - -TEST(EpollTest, OneshotAndEdgeTriggered) { - auto epollfd = ASSERT_NO_ERRNO_AND_VALUE(NewEpollFD()); - auto eventfd = ASSERT_NO_ERRNO_AND_VALUE(NewEventFD()); - ASSERT_NO_ERRNO(RegisterEpollFD(epollfd.get(), eventfd.get(), - EPOLLOUT | EPOLLET | EPOLLONESHOT, - kMagicConstant)); - - struct epoll_event result[kFDsPerEpoll]; - // First time one shot edge-triggered entry means that epoll_wait should - // return the event. - ASSERT_THAT(RetryEINTR(epoll_wait)(epollfd.get(), result, kFDsPerEpoll, -1), - SyscallSucceedsWithValue(1)); - EXPECT_EQ(result[0].data.u64, kMagicConstant); - - // Edge-triggered entry means that the second epoll_wait should time out. - ASSERT_THAT(RetryEINTR(epoll_wait)(epollfd.get(), result, kFDsPerEpoll, 100), - SyscallSucceedsWithValue(0)); - - uint64_t tmp = ULLONG_MAX - 1; - // Make an fd non-writable. - ASSERT_THAT(WriteFd(eventfd.get(), &tmp, sizeof(tmp)), - SyscallSucceedsWithValue(sizeof(tmp))); - // Make the same fd non-writable to trigger a change, which will not trigger - // an edge-triggered event because we've also included EPOLLONESHOT. - ASSERT_THAT(ReadFd(eventfd.get(), &tmp, sizeof(tmp)), - SyscallSucceedsWithValue(sizeof(tmp))); - ASSERT_THAT(RetryEINTR(epoll_wait)(epollfd.get(), result, kFDsPerEpoll, 100), - SyscallSucceedsWithValue(0)); -} - -TEST(EpollTest, CycleOfOneDisallowed) { - auto epollfd = ASSERT_NO_ERRNO_AND_VALUE(NewEpollFD()); - - struct epoll_event event; - event.events = EPOLLOUT; - event.data.u64 = kMagicConstant; - - ASSERT_THAT(epoll_ctl(epollfd.get(), EPOLL_CTL_ADD, epollfd.get(), &event), - SyscallFailsWithErrno(EINVAL)); -} - -TEST(EpollTest, CycleOfThreeDisallowed) { - auto epollfd = ASSERT_NO_ERRNO_AND_VALUE(NewEpollFD()); - auto epollfd1 = ASSERT_NO_ERRNO_AND_VALUE(NewEpollFD()); - auto epollfd2 = ASSERT_NO_ERRNO_AND_VALUE(NewEpollFD()); - - ASSERT_NO_ERRNO( - RegisterEpollFD(epollfd.get(), epollfd1.get(), EPOLLIN, kMagicConstant)); - ASSERT_NO_ERRNO( - RegisterEpollFD(epollfd1.get(), epollfd2.get(), EPOLLIN, kMagicConstant)); - - struct epoll_event event; - event.events = EPOLLIN; - event.data.u64 = kMagicConstant; - EXPECT_THAT(epoll_ctl(epollfd2.get(), EPOLL_CTL_ADD, epollfd.get(), &event), - SyscallFailsWithErrno(ELOOP)); -} - -TEST(EpollTest, CloseFile) { - auto epollfd = ASSERT_NO_ERRNO_AND_VALUE(NewEpollFD()); - auto eventfd = ASSERT_NO_ERRNO_AND_VALUE(NewEventFD()); - ASSERT_NO_ERRNO( - RegisterEpollFD(epollfd.get(), eventfd.get(), EPOLLOUT, kMagicConstant)); - - struct epoll_event result[kFDsPerEpoll]; - ASSERT_THAT(RetryEINTR(epoll_wait)(epollfd.get(), result, kFDsPerEpoll, -1), - SyscallSucceedsWithValue(1)); - EXPECT_EQ(result[0].data.u64, kMagicConstant); - - // Close the event fd early. - eventfd.reset(); - - EXPECT_THAT(RetryEINTR(epoll_wait)(epollfd.get(), result, kFDsPerEpoll, 100), - SyscallSucceedsWithValue(0)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/eventfd.cc b/test/syscalls/linux/eventfd.cc deleted file mode 100644 index 927001eee..000000000 --- a/test/syscalls/linux/eventfd.cc +++ /dev/null @@ -1,205 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <pthread.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <sys/epoll.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "test/util/epoll_util.h" -#include "test/util/eventfd_util.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -TEST(EventfdTest, Nonblock) { - FileDescriptor efd = - ASSERT_NO_ERRNO_AND_VALUE(NewEventFD(0, EFD_NONBLOCK | EFD_SEMAPHORE)); - - uint64_t l; - ASSERT_THAT(read(efd.get(), &l, sizeof(l)), SyscallFailsWithErrno(EAGAIN)); - - l = 1; - ASSERT_THAT(write(efd.get(), &l, sizeof(l)), SyscallSucceeds()); - - l = 0; - ASSERT_THAT(read(efd.get(), &l, sizeof(l)), SyscallSucceeds()); - EXPECT_EQ(l, 1); - - ASSERT_THAT(read(efd.get(), &l, sizeof(l)), SyscallFailsWithErrno(EAGAIN)); -} - -void* read_three_times(void* arg) { - int efd = *reinterpret_cast<int*>(arg); - uint64_t l; - EXPECT_THAT(read(efd, &l, sizeof(l)), SyscallSucceedsWithValue(sizeof(l))); - EXPECT_THAT(read(efd, &l, sizeof(l)), SyscallSucceedsWithValue(sizeof(l))); - EXPECT_THAT(read(efd, &l, sizeof(l)), SyscallSucceedsWithValue(sizeof(l))); - return nullptr; -} - -TEST(EventfdTest, BlockingWrite) { - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(NewEventFD(0, EFD_SEMAPHORE)); - int efd = fd.get(); - - pthread_t p; - ASSERT_THAT(pthread_create(&p, nullptr, read_three_times, - reinterpret_cast<void*>(&efd)), - SyscallSucceeds()); - - uint64_t l = 1; - ASSERT_THAT(write(efd, &l, sizeof(l)), SyscallSucceeds()); - EXPECT_EQ(l, 1); - - ASSERT_THAT(write(efd, &l, sizeof(l)), SyscallSucceeds()); - EXPECT_EQ(l, 1); - - ASSERT_THAT(write(efd, &l, sizeof(l)), SyscallSucceeds()); - EXPECT_EQ(l, 1); - - ASSERT_THAT(pthread_join(p, nullptr), SyscallSucceeds()); -} - -TEST(EventfdTest, SmallWrite) { - FileDescriptor efd = - ASSERT_NO_ERRNO_AND_VALUE(NewEventFD(0, EFD_NONBLOCK | EFD_SEMAPHORE)); - - uint64_t l = 16; - ASSERT_THAT(write(efd.get(), &l, 4), SyscallFailsWithErrno(EINVAL)); -} - -TEST(EventfdTest, SmallRead) { - FileDescriptor efd = - ASSERT_NO_ERRNO_AND_VALUE(NewEventFD(0, EFD_NONBLOCK | EFD_SEMAPHORE)); - - uint64_t l = 1; - ASSERT_THAT(write(efd.get(), &l, sizeof(l)), SyscallSucceeds()); - - l = 0; - ASSERT_THAT(read(efd.get(), &l, 4), SyscallFailsWithErrno(EINVAL)); -} - -TEST(EventfdTest, BigWrite) { - FileDescriptor efd = - ASSERT_NO_ERRNO_AND_VALUE(NewEventFD(0, EFD_NONBLOCK | EFD_SEMAPHORE)); - - uint64_t big[16]; - big[0] = 16; - ASSERT_THAT(write(efd.get(), big, sizeof(big)), SyscallSucceeds()); -} - -TEST(EventfdTest, BigRead) { - FileDescriptor efd = - ASSERT_NO_ERRNO_AND_VALUE(NewEventFD(0, EFD_NONBLOCK | EFD_SEMAPHORE)); - - uint64_t l = 1; - ASSERT_THAT(write(efd.get(), &l, sizeof(l)), SyscallSucceeds()); - - uint64_t big[16]; - ASSERT_THAT(read(efd.get(), big, sizeof(big)), SyscallSucceeds()); - EXPECT_EQ(big[0], 1); -} - -TEST(EventfdTest, BigWriteBigRead) { - FileDescriptor efd = - ASSERT_NO_ERRNO_AND_VALUE(NewEventFD(0, EFD_NONBLOCK | EFD_SEMAPHORE)); - - uint64_t l[16]; - l[0] = 16; - ASSERT_THAT(write(efd.get(), l, sizeof(l)), SyscallSucceeds()); - ASSERT_THAT(read(efd.get(), l, sizeof(l)), SyscallSucceeds()); - EXPECT_EQ(l[0], 1); -} - -TEST(EventfdTest, SpliceFromPipePartialSucceeds) { - int pipes[2]; - ASSERT_THAT(pipe2(pipes, O_NONBLOCK), SyscallSucceeds()); - const FileDescriptor pipe_rfd(pipes[0]); - const FileDescriptor pipe_wfd(pipes[1]); - constexpr uint64_t kVal{1}; - - FileDescriptor efd = ASSERT_NO_ERRNO_AND_VALUE(NewEventFD(0, EFD_NONBLOCK)); - - uint64_t event_array[2]; - event_array[0] = kVal; - event_array[1] = kVal; - ASSERT_THAT(write(pipe_wfd.get(), event_array, sizeof(event_array)), - SyscallSucceedsWithValue(sizeof(event_array))); - EXPECT_THAT(splice(pipe_rfd.get(), /*__offin=*/nullptr, efd.get(), - /*__offout=*/nullptr, sizeof(event_array[0]) + 1, - SPLICE_F_NONBLOCK), - SyscallSucceedsWithValue(sizeof(event_array[0]))); - - uint64_t val; - ASSERT_THAT(read(efd.get(), &val, sizeof(val)), - SyscallSucceedsWithValue(sizeof(val))); - EXPECT_EQ(val, kVal); -} - -// NotifyNonZero is inherently racy, so random save is disabled. -TEST(EventfdTest, NotifyNonZero_NoRandomSave) { - // Waits will time out at 10 seconds. - constexpr int kEpollTimeoutMs = 10000; - // Create an eventfd descriptor. - FileDescriptor efd = - ASSERT_NO_ERRNO_AND_VALUE(NewEventFD(7, EFD_NONBLOCK | EFD_SEMAPHORE)); - // Create an epoll fd to listen to efd. - FileDescriptor epollfd = ASSERT_NO_ERRNO_AND_VALUE(NewEpollFD()); - // Add efd to epoll. - ASSERT_NO_ERRNO( - RegisterEpollFD(epollfd.get(), efd.get(), EPOLLIN | EPOLLET, efd.get())); - - // Use epoll to get a value from efd. - struct epoll_event out_ev; - int wait_out = epoll_wait(epollfd.get(), &out_ev, 1, kEpollTimeoutMs); - EXPECT_EQ(wait_out, 1); - EXPECT_EQ(efd.get(), out_ev.data.fd); - uint64_t val = 0; - ASSERT_THAT(read(efd.get(), &val, sizeof(val)), SyscallSucceeds()); - EXPECT_EQ(val, 1); - - // Start a thread that, after this thread blocks on epoll_wait, will write to - // efd. This is racy -- it's possible that this write will happen after - // epoll_wait times out. - ScopedThread t([&efd] { - sleep(5); - uint64_t val = 1; - EXPECT_THAT(write(efd.get(), &val, sizeof(val)), - SyscallSucceedsWithValue(sizeof(val))); - }); - - // epoll_wait should return once the thread writes. - wait_out = epoll_wait(epollfd.get(), &out_ev, 1, kEpollTimeoutMs); - EXPECT_EQ(wait_out, 1); - EXPECT_EQ(efd.get(), out_ev.data.fd); - - val = 0; - ASSERT_THAT(read(efd.get(), &val, sizeof(val)), SyscallSucceeds()); - EXPECT_EQ(val, 1); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/exceptions.cc b/test/syscalls/linux/exceptions.cc deleted file mode 100644 index 420b9543f..000000000 --- a/test/syscalls/linux/exceptions.cc +++ /dev/null @@ -1,367 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <signal.h> - -#include "gtest/gtest.h" -#include "test/util/logging.h" -#include "test/util/platform_util.h" -#include "test/util/signal_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -// Default value for the x87 FPU control word. See Intel SDM Vol 1, Ch 8.1.5 -// "x87 FPU Control Word". -constexpr uint16_t kX87ControlWordDefault = 0x37f; - -// Mask for the divide-by-zero exception. -constexpr uint16_t kX87ControlWordDiv0Mask = 1 << 2; - -// Default value for the SSE control register (MXCSR). See Intel SDM Vol 1, Ch -// 11.6.4 "Initialization of SSE/SSE3 Extensions". -constexpr uint32_t kMXCSRDefault = 0x1f80; - -// Mask for the divide-by-zero exception. -constexpr uint32_t kMXCSRDiv0Mask = 1 << 9; - -// Flag for a pending divide-by-zero exception. -constexpr uint32_t kMXCSRDiv0Flag = 1 << 2; - -void inline Halt() { asm("hlt\r\n"); } - -void inline SetAlignmentCheck() { - asm("subq $128, %%rsp\r\n" // Avoid potential red zone clobber - "pushf\r\n" - "pop %%rax\r\n" - "or $0x40000, %%rax\r\n" - "push %%rax\r\n" - "popf\r\n" - "addq $128, %%rsp\r\n" - : - : - : "ax"); -} - -void inline ClearAlignmentCheck() { - asm("subq $128, %%rsp\r\n" // Avoid potential red zone clobber - "pushf\r\n" - "pop %%rax\r\n" - "mov $0x40000, %%rbx\r\n" - "not %%rbx\r\n" - "and %%rbx, %%rax\r\n" - "push %%rax\r\n" - "popf\r\n" - "addq $128, %%rsp\r\n" - : - : - : "ax", "bx"); -} - -void inline Int3Normal() { asm(".byte 0xcd, 0x03\r\n"); } - -void inline Int3Compact() { asm(".byte 0xcc\r\n"); } - -void InIOHelper(int width, int value) { - EXPECT_EXIT( - { - switch (width) { - case 1: - asm volatile("inb %%dx, %%al" ::"d"(value) : "%eax"); - break; - case 2: - asm volatile("inw %%dx, %%ax" ::"d"(value) : "%eax"); - break; - case 4: - asm volatile("inl %%dx, %%eax" ::"d"(value) : "%eax"); - break; - default: - FAIL() << "invalid input width, only 1, 2 or 4 is allowed"; - } - }, - ::testing::KilledBySignal(SIGSEGV), ""); -} - -TEST(ExceptionTest, Halt) { - // In order to prevent the regular handler from messing with things (and - // perhaps refaulting until some other signal occurs), we reset the handler to - // the default action here and ensure that it dies correctly. - struct sigaction sa = {}; - sa.sa_handler = SIG_DFL; - auto const cleanup = ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGSEGV, sa)); - - EXPECT_EXIT(Halt(), ::testing::KilledBySignal(SIGSEGV), ""); -} - -TEST(ExceptionTest, DivideByZero) { - // See above. - struct sigaction sa = {}; - sa.sa_handler = SIG_DFL; - auto const cleanup = ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGFPE, sa)); - - EXPECT_EXIT( - { - uint32_t remainder; - uint32_t quotient; - uint32_t divisor = 0; - uint64_t value = 1; - asm("divl 0(%2)\r\n" - : "=d"(remainder), "=a"(quotient) - : "r"(&divisor), "d"(value >> 32), "a"(value)); - TEST_CHECK(quotient > 0); // Force dependency. - }, - ::testing::KilledBySignal(SIGFPE), ""); -} - -// By default, x87 exceptions are masked and simply return a default value. -TEST(ExceptionTest, X87DivideByZeroMasked) { - int32_t quotient; - int32_t value = 1; - int32_t divisor = 0; - asm("fildl %[value]\r\n" - "fidivl %[divisor]\r\n" - "fistpl %[quotient]\r\n" - : [ quotient ] "=m"(quotient) - : [ value ] "m"(value), [ divisor ] "m"(divisor)); - - EXPECT_EQ(quotient, INT32_MIN); -} - -// When unmasked, division by zero raises SIGFPE. -TEST(ExceptionTest, X87DivideByZeroUnmasked) { - // See above. - struct sigaction sa = {}; - sa.sa_handler = SIG_DFL; - auto const cleanup = ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGFPE, sa)); - - EXPECT_EXIT( - { - // Clear the divide by zero exception mask. - constexpr uint16_t kControlWord = - kX87ControlWordDefault & ~kX87ControlWordDiv0Mask; - - int32_t quotient; - int32_t value = 1; - int32_t divisor = 0; - asm volatile( - "fldcw %[cw]\r\n" - "fildl %[value]\r\n" - "fidivl %[divisor]\r\n" - "fistpl %[quotient]\r\n" - : [ quotient ] "=m"(quotient) - : [ cw ] "m"(kControlWord), [ value ] "m"(value), - [ divisor ] "m"(divisor)); - }, - ::testing::KilledBySignal(SIGFPE), ""); -} - -// Pending exceptions in the x87 status register are not clobbered by syscalls. -TEST(ExceptionTest, X87StatusClobber) { - // See above. - struct sigaction sa = {}; - sa.sa_handler = SIG_DFL; - auto const cleanup = ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGFPE, sa)); - - EXPECT_EXIT( - { - // Clear the divide by zero exception mask. - constexpr uint16_t kControlWord = - kX87ControlWordDefault & ~kX87ControlWordDiv0Mask; - - int32_t quotient; - int32_t value = 1; - int32_t divisor = 0; - asm volatile( - "fildl %[value]\r\n" - "fidivl %[divisor]\r\n" - // Exception is masked, so it does not occur here. - "fistpl %[quotient]\r\n" - - // SYS_getpid placed in rax by constraint. - "syscall\r\n" - - // Unmask exception. The syscall didn't clobber the pending - // exception, so now it can be raised. - // - // N.B. "a floating-point exception will be generated upon execution - // of the *next* floating-point instruction". - "fldcw %[cw]\r\n" - "fwait\r\n" - : [ quotient ] "=m"(quotient) - : [ value ] "m"(value), [ divisor ] "m"(divisor), "a"(SYS_getpid), - [ cw ] "m"(kControlWord) - : "rcx", "r11"); - }, - ::testing::KilledBySignal(SIGFPE), ""); -} - -// By default, SSE exceptions are masked and simply return a default value. -TEST(ExceptionTest, SSEDivideByZeroMasked) { - uint32_t status; - int32_t quotient; - int32_t value = 1; - int32_t divisor = 0; - asm("cvtsi2ssl %[value], %%xmm0\r\n" - "cvtsi2ssl %[divisor], %%xmm1\r\n" - "divss %%xmm1, %%xmm0\r\n" - "cvtss2sil %%xmm0, %[quotient]\r\n" - : [ quotient ] "=r"(quotient), [ status ] "=r"(status) - : [ value ] "r"(value), [ divisor ] "r"(divisor) - : "xmm0", "xmm1"); - - EXPECT_EQ(quotient, INT32_MIN); -} - -// When unmasked, division by zero raises SIGFPE. -TEST(ExceptionTest, SSEDivideByZeroUnmasked) { - // See above. - struct sigaction sa = {}; - sa.sa_handler = SIG_DFL; - auto const cleanup = ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGFPE, sa)); - - EXPECT_EXIT( - { - // Clear the divide by zero exception mask. - constexpr uint32_t kMXCSR = kMXCSRDefault & ~kMXCSRDiv0Mask; - - int32_t quotient; - int32_t value = 1; - int32_t divisor = 0; - asm volatile( - "ldmxcsr %[mxcsr]\r\n" - "cvtsi2ssl %[value], %%xmm0\r\n" - "cvtsi2ssl %[divisor], %%xmm1\r\n" - "divss %%xmm1, %%xmm0\r\n" - "cvtss2sil %%xmm0, %[quotient]\r\n" - : [ quotient ] "=r"(quotient) - : [ mxcsr ] "m"(kMXCSR), [ value ] "r"(value), - [ divisor ] "r"(divisor) - : "xmm0", "xmm1"); - }, - ::testing::KilledBySignal(SIGFPE), ""); -} - -// Pending exceptions in the SSE status register are not clobbered by syscalls. -TEST(ExceptionTest, SSEStatusClobber) { - uint32_t mxcsr; - int32_t quotient; - int32_t value = 1; - int32_t divisor = 0; - asm("cvtsi2ssl %[value], %%xmm0\r\n" - "cvtsi2ssl %[divisor], %%xmm1\r\n" - "divss %%xmm1, %%xmm0\r\n" - // Exception is masked, so it does not occur here. - "cvtss2sil %%xmm0, %[quotient]\r\n" - - // SYS_getpid placed in rax by constraint. - "syscall\r\n" - - // Intel SDM Vol 1, Ch 10.2.3.1 "SIMD Floating-Point Mask and Flag Bits": - // "If LDMXCSR or FXRSTOR clears a mask bit and sets the corresponding - // exception flag bit, a SIMD floating-point exception will not be - // generated as a result of this change. The unmasked exception will be - // generated only upon the execution of the next SSE/SSE2/SSE3 instruction - // that detects the unmasked exception condition." - // - // Though ambiguous, empirical evidence indicates that this means that - // exception flags set in the status register will never cause an - // exception to be raised; only a new exception condition will do so. - // - // Thus here we just check for the flag itself rather than trying to raise - // the exception. - "stmxcsr %[mxcsr]\r\n" - : [ quotient ] "=r"(quotient), [ mxcsr ] "+m"(mxcsr) - : [ value ] "r"(value), [ divisor ] "r"(divisor), "a"(SYS_getpid) - : "xmm0", "xmm1", "rcx", "r11"); - - EXPECT_TRUE(mxcsr & kMXCSRDiv0Flag); -} - -TEST(ExceptionTest, IOAccessFault) { - // See above. - struct sigaction sa = {}; - sa.sa_handler = SIG_DFL; - auto const cleanup = ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGSEGV, sa)); - - InIOHelper(1, 0x0); - InIOHelper(2, 0x7); - InIOHelper(4, 0x6); - InIOHelper(1, 0xffff); - InIOHelper(2, 0xffff); - InIOHelper(4, 0xfffd); -} - -TEST(ExceptionTest, Alignment) { - SetAlignmentCheck(); - ClearAlignmentCheck(); -} - -TEST(ExceptionTest, AlignmentHalt) { - // See above. - struct sigaction sa = {}; - sa.sa_handler = SIG_DFL; - auto const cleanup = ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGSEGV, sa)); - - // Reported upstream. We need to ensure that bad flags are cleared even in - // fault paths. Set the alignment flag and then generate an exception. - EXPECT_EXIT( - { - SetAlignmentCheck(); - Halt(); - }, - ::testing::KilledBySignal(SIGSEGV), ""); -} - -TEST(ExceptionTest, AlignmentCheck) { - SKIP_IF(PlatformSupportAlignmentCheck() != PlatformSupport::Allowed); - - // See above. - struct sigaction sa = {}; - sa.sa_handler = SIG_DFL; - auto const cleanup = ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGBUS, sa)); - - EXPECT_EXIT( - { - char array[16]; - SetAlignmentCheck(); - for (int i = 0; i < 8; i++) { - // At least 7/8 offsets will be unaligned here. - uint64_t* ptr = reinterpret_cast<uint64_t*>(&array[i]); - asm("mov %0, 0(%0)\r\n" : : "r"(ptr) : "ax"); - } - }, - ::testing::KilledBySignal(SIGBUS), ""); -} - -TEST(ExceptionTest, Int3Normal) { - // See above. - struct sigaction sa = {}; - sa.sa_handler = SIG_DFL; - auto const cleanup = ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGTRAP, sa)); - - EXPECT_EXIT(Int3Normal(), ::testing::KilledBySignal(SIGTRAP), ""); -} - -TEST(ExceptionTest, Int3Compact) { - // See above. - struct sigaction sa = {}; - sa.sa_handler = SIG_DFL; - auto const cleanup = ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGTRAP, sa)); - - EXPECT_EXIT(Int3Compact(), ::testing::KilledBySignal(SIGTRAP), ""); -} - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/exec.cc b/test/syscalls/linux/exec.cc deleted file mode 100644 index b5e0a512b..000000000 --- a/test/syscalls/linux/exec.cc +++ /dev/null @@ -1,873 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/syscalls/linux/exec.h" - -#include <errno.h> -#include <fcntl.h> -#include <sys/eventfd.h> -#include <sys/resource.h> -#include <sys/time.h> -#include <unistd.h> - -#include <iostream> -#include <memory> -#include <string> -#include <vector> - -#include "gtest/gtest.h" -#include "absl/strings/match.h" -#include "absl/strings/numbers.h" -#include "absl/strings/str_cat.h" -#include "absl/strings/str_split.h" -#include "absl/strings/string_view.h" -#include "absl/synchronization/mutex.h" -#include "absl/types/optional.h" -#include "test/util/file_descriptor.h" -#include "test/util/fs_util.h" -#include "test/util/multiprocess_util.h" -#include "test/util/posix_error.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -constexpr char kBasicWorkload[] = "test/syscalls/linux/exec_basic_workload"; -constexpr char kExitScript[] = "test/syscalls/linux/exit_script"; -constexpr char kStateWorkload[] = "test/syscalls/linux/exec_state_workload"; -constexpr char kProcExeWorkload[] = - "test/syscalls/linux/exec_proc_exe_workload"; -constexpr char kAssertClosedWorkload[] = - "test/syscalls/linux/exec_assert_closed_workload"; -constexpr char kPriorityWorkload[] = "test/syscalls/linux/priority_execve"; - -constexpr char kExit42[] = "--exec_exit_42"; -constexpr char kExecWithThread[] = "--exec_exec_with_thread"; -constexpr char kExecFromThread[] = "--exec_exec_from_thread"; - -// Runs file specified by dirfd and pathname with argv and checks that the exit -// status is expect_status and that stderr contains expect_stderr. -void CheckExecHelper(const absl::optional<int32_t> dirfd, - const std::string& pathname, const ExecveArray& argv, - const ExecveArray& envv, const int flags, - int expect_status, const std::string& expect_stderr) { - int pipe_fds[2]; - ASSERT_THAT(pipe2(pipe_fds, O_CLOEXEC), SyscallSucceeds()); - - FileDescriptor read_fd(pipe_fds[0]); - FileDescriptor write_fd(pipe_fds[1]); - - pid_t child; - int execve_errno; - - const auto remap_stderr = [pipe_fds] { - // Remap stdin and stdout to /dev/null. - int fd = open("/dev/null", O_RDWR | O_CLOEXEC); - if (fd < 0) { - _exit(errno); - } - - int ret = dup2(fd, 0); - if (ret < 0) { - _exit(errno); - } - - ret = dup2(fd, 1); - if (ret < 0) { - _exit(errno); - } - - // And stderr to the pipe. - ret = dup2(pipe_fds[1], 2); - if (ret < 0) { - _exit(errno); - } - - // Here, we'd ideally close all other FDs inherited from the parent. - // However, that's not worth the effort and CloexecNormalFile and - // CloexecEventfd depend on that not happening. - }; - - Cleanup kill; - if (dirfd.has_value()) { - kill = ASSERT_NO_ERRNO_AND_VALUE(ForkAndExecveat(*dirfd, pathname, argv, - envv, flags, remap_stderr, - &child, &execve_errno)); - } else { - kill = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(pathname, argv, envv, remap_stderr, &child, &execve_errno)); - } - - ASSERT_EQ(0, execve_errno); - - // Not needed anymore. - write_fd.reset(); - - // Read stderr until the child exits. - std::string output; - constexpr int kSize = 128; - char buf[kSize]; - int n; - do { - ASSERT_THAT(n = ReadFd(read_fd.get(), buf, kSize), SyscallSucceeds()); - if (n > 0) { - output.append(buf, n); - } - } while (n > 0); - - int status; - ASSERT_THAT(RetryEINTR(waitpid)(child, &status, 0), SyscallSucceeds()); - EXPECT_EQ(status, expect_status); - - // Process cleanup no longer needed. - kill.Release(); - - EXPECT_TRUE(absl::StrContains(output, expect_stderr)) << output; -} - -void CheckExec(const std::string& filename, const ExecveArray& argv, - const ExecveArray& envv, int expect_status, - const std::string& expect_stderr) { - CheckExecHelper(/*dirfd=*/absl::optional<int32_t>(), filename, argv, envv, - /*flags=*/0, expect_status, expect_stderr); -} - -void CheckExecveat(const int32_t dirfd, const std::string& pathname, - const ExecveArray& argv, const ExecveArray& envv, - const int flags, int expect_status, - const std::string& expect_stderr) { - CheckExecHelper(absl::optional<int32_t>(dirfd), pathname, argv, envv, flags, - expect_status, expect_stderr); -} - -TEST(ExecTest, EmptyPath) { - int execve_errno; - ASSERT_NO_ERRNO_AND_VALUE(ForkAndExec("", {}, {}, nullptr, &execve_errno)); - EXPECT_EQ(execve_errno, ENOENT); -} - -TEST(ExecTest, Basic) { - CheckExec(RunfilePath(kBasicWorkload), {RunfilePath(kBasicWorkload)}, {}, - ArgEnvExitStatus(0, 0), - absl::StrCat(RunfilePath(kBasicWorkload), "\n")); -} - -TEST(ExecTest, OneArg) { - CheckExec(RunfilePath(kBasicWorkload), {RunfilePath(kBasicWorkload), "1"}, {}, - ArgEnvExitStatus(1, 0), - absl::StrCat(RunfilePath(kBasicWorkload), "\n1\n")); -} - -TEST(ExecTest, FiveArg) { - CheckExec(RunfilePath(kBasicWorkload), - {RunfilePath(kBasicWorkload), "1", "2", "3", "4", "5"}, {}, - ArgEnvExitStatus(5, 0), - absl::StrCat(RunfilePath(kBasicWorkload), "\n1\n2\n3\n4\n5\n")); -} - -TEST(ExecTest, OneEnv) { - CheckExec(RunfilePath(kBasicWorkload), {RunfilePath(kBasicWorkload)}, {"1"}, - ArgEnvExitStatus(0, 1), - absl::StrCat(RunfilePath(kBasicWorkload), "\n1\n")); -} - -TEST(ExecTest, FiveEnv) { - CheckExec(RunfilePath(kBasicWorkload), {RunfilePath(kBasicWorkload)}, - {"1", "2", "3", "4", "5"}, ArgEnvExitStatus(0, 5), - absl::StrCat(RunfilePath(kBasicWorkload), "\n1\n2\n3\n4\n5\n")); -} - -TEST(ExecTest, OneArgOneEnv) { - CheckExec(RunfilePath(kBasicWorkload), {RunfilePath(kBasicWorkload), "arg"}, - {"env"}, ArgEnvExitStatus(1, 1), - absl::StrCat(RunfilePath(kBasicWorkload), "\narg\nenv\n")); -} - -TEST(ExecTest, InterpreterScript) { - CheckExec(RunfilePath(kExitScript), {RunfilePath(kExitScript), "25"}, {}, - ArgEnvExitStatus(25, 0), ""); -} - -// Everything after the path in the interpreter script is a single argument. -TEST(ExecTest, InterpreterScriptArgSplit) { - // Symlink through /tmp to ensure the path is short enough. - TempPath link = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateSymlinkTo("/tmp", RunfilePath(kBasicWorkload))); - - TempPath script = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), absl::StrCat("#!", link.path(), " foo bar"), - 0755)); - - CheckExec(script.path(), {script.path()}, {}, ArgEnvExitStatus(2, 0), - absl::StrCat(link.path(), "\nfoo bar\n", script.path(), "\n")); -} - -// Original argv[0] is replaced with the script path. -TEST(ExecTest, InterpreterScriptArgvZero) { - // Symlink through /tmp to ensure the path is short enough. - TempPath link = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateSymlinkTo("/tmp", RunfilePath(kBasicWorkload))); - - TempPath script = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), absl::StrCat("#!", link.path()), 0755)); - - CheckExec(script.path(), {"REPLACED"}, {}, ArgEnvExitStatus(1, 0), - absl::StrCat(link.path(), "\n", script.path(), "\n")); -} - -// Original argv[0] is replaced with the script path, exactly as passed to -// execve. -TEST(ExecTest, InterpreterScriptArgvZeroRelative) { - // Symlink through /tmp to ensure the path is short enough. - TempPath link = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateSymlinkTo("/tmp", RunfilePath(kBasicWorkload))); - - TempPath script = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), absl::StrCat("#!", link.path()), 0755)); - - auto cwd = ASSERT_NO_ERRNO_AND_VALUE(GetCWD()); - auto script_relative = - ASSERT_NO_ERRNO_AND_VALUE(GetRelativePath(cwd, script.path())); - - CheckExec(script_relative, {"REPLACED"}, {}, ArgEnvExitStatus(1, 0), - absl::StrCat(link.path(), "\n", script_relative, "\n")); -} - -// argv[0] is added as the script path, even if there was none. -TEST(ExecTest, InterpreterScriptArgvZeroAdded) { - // Symlink through /tmp to ensure the path is short enough. - TempPath link = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateSymlinkTo("/tmp", RunfilePath(kBasicWorkload))); - - TempPath script = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), absl::StrCat("#!", link.path()), 0755)); - - CheckExec(script.path(), {}, {}, ArgEnvExitStatus(1, 0), - absl::StrCat(link.path(), "\n", script.path(), "\n")); -} - -// A NUL byte in the script line ends parsing. -TEST(ExecTest, InterpreterScriptArgNUL) { - // Symlink through /tmp to ensure the path is short enough. - TempPath link = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateSymlinkTo("/tmp", RunfilePath(kBasicWorkload))); - - TempPath script = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), - absl::StrCat("#!", link.path(), " foo", std::string(1, '\0'), "bar"), - 0755)); - - CheckExec(script.path(), {script.path()}, {}, ArgEnvExitStatus(2, 0), - absl::StrCat(link.path(), "\nfoo\n", script.path(), "\n")); -} - -// Trailing whitespace following interpreter path is ignored. -TEST(ExecTest, InterpreterScriptTrailingWhitespace) { - // Symlink through /tmp to ensure the path is short enough. - TempPath link = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateSymlinkTo("/tmp", RunfilePath(kBasicWorkload))); - - TempPath script = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), absl::StrCat("#!", link.path(), " "), 0755)); - - CheckExec(script.path(), {script.path()}, {}, ArgEnvExitStatus(1, 0), - absl::StrCat(link.path(), "\n", script.path(), "\n")); -} - -// Multiple whitespace characters between interpreter and arg allowed. -TEST(ExecTest, InterpreterScriptArgWhitespace) { - // Symlink through /tmp to ensure the path is short enough. - TempPath link = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateSymlinkTo("/tmp", RunfilePath(kBasicWorkload))); - - TempPath script = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), absl::StrCat("#!", link.path(), " foo"), 0755)); - - CheckExec(script.path(), {script.path()}, {}, ArgEnvExitStatus(2, 0), - absl::StrCat(link.path(), "\nfoo\n", script.path(), "\n")); -} - -TEST(ExecTest, InterpreterScriptNoPath) { - TempPath script = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateFileWith(GetAbsoluteTestTmpdir(), "#!", 0755)); - - int execve_errno; - ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(script.path(), {script.path()}, {}, nullptr, &execve_errno)); - EXPECT_EQ(execve_errno, ENOEXEC); -} - -// AT_EXECFN is the path passed to execve. -TEST(ExecTest, ExecFn) { - // Symlink through /tmp to ensure the path is short enough. - TempPath link = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateSymlinkTo("/tmp", RunfilePath(kStateWorkload))); - - TempPath script = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), absl::StrCat("#!", link.path(), " PrintExecFn"), - 0755)); - - // Pass the script as a relative path and assert that is what appears in - // AT_EXECFN. - auto cwd = ASSERT_NO_ERRNO_AND_VALUE(GetCWD()); - auto script_relative = - ASSERT_NO_ERRNO_AND_VALUE(GetRelativePath(cwd, script.path())); - - CheckExec(script_relative, {script_relative}, {}, ArgEnvExitStatus(0, 0), - absl::StrCat(script_relative, "\n")); -} - -TEST(ExecTest, ExecName) { - std::string path = RunfilePath(kStateWorkload); - - CheckExec(path, {path, "PrintExecName"}, {}, ArgEnvExitStatus(0, 0), - absl::StrCat(Basename(path).substr(0, 15), "\n")); -} - -TEST(ExecTest, ExecNameScript) { - // Symlink through /tmp to ensure the path is short enough. - TempPath link = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateSymlinkTo("/tmp", RunfilePath(kStateWorkload))); - - TempPath script = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), - absl::StrCat("#!", link.path(), " PrintExecName"), 0755)); - - std::string script_path = script.path(); - - CheckExec(script_path, {script_path}, {}, ArgEnvExitStatus(0, 0), - absl::StrCat(Basename(script_path).substr(0, 15), "\n")); -} - -// execve may be called by a multithreaded process. -TEST(ExecTest, WithSiblingThread) { - CheckExec("/proc/self/exe", {"/proc/self/exe", kExecWithThread}, {}, - W_EXITCODE(42, 0), ""); -} - -// execve may be called from a thread other than the leader of a multithreaded -// process. -TEST(ExecTest, FromSiblingThread) { - CheckExec("/proc/self/exe", {"/proc/self/exe", kExecFromThread}, {}, - W_EXITCODE(42, 0), ""); -} - -TEST(ExecTest, NotFound) { - char* const argv[] = {nullptr}; - char* const envp[] = {nullptr}; - EXPECT_THAT(execve("/file/does/not/exist", argv, envp), - SyscallFailsWithErrno(ENOENT)); -} - -TEST(ExecTest, NoExecPerm) { - char* const argv[] = {nullptr}; - char* const envp[] = {nullptr}; - auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - EXPECT_THAT(execve(f.path().c_str(), argv, envp), - SyscallFailsWithErrno(EACCES)); -} - -// A signal handler we never expect to be called. -void SignalHandler(int signo) { - std::cerr << "Signal " << signo << " raised." << std::endl; - exit(1); -} - -// Signal handlers are reset on execve(2), unless they have default or ignored -// disposition. -TEST(ExecStateTest, HandlerReset) { - struct sigaction sa; - sa.sa_handler = SignalHandler; - ASSERT_THAT(sigaction(SIGUSR1, &sa, nullptr), SyscallSucceeds()); - - ExecveArray args = { - RunfilePath(kStateWorkload), - "CheckSigHandler", - absl::StrCat(SIGUSR1), - absl::StrCat(absl::Hex(reinterpret_cast<uintptr_t>(SIG_DFL))), - }; - - CheckExec(RunfilePath(kStateWorkload), args, {}, W_EXITCODE(0, 0), ""); -} - -// Ignored signal dispositions are not reset. -TEST(ExecStateTest, IgnorePreserved) { - struct sigaction sa; - sa.sa_handler = SIG_IGN; - ASSERT_THAT(sigaction(SIGUSR1, &sa, nullptr), SyscallSucceeds()); - - ExecveArray args = { - RunfilePath(kStateWorkload), - "CheckSigHandler", - absl::StrCat(SIGUSR1), - absl::StrCat(absl::Hex(reinterpret_cast<uintptr_t>(SIG_IGN))), - }; - - CheckExec(RunfilePath(kStateWorkload), args, {}, W_EXITCODE(0, 0), ""); -} - -// Signal masks are not reset on exec -TEST(ExecStateTest, SignalMask) { - sigset_t s; - sigemptyset(&s); - sigaddset(&s, SIGUSR1); - ASSERT_THAT(sigprocmask(SIG_BLOCK, &s, nullptr), SyscallSucceeds()); - - ExecveArray args = { - RunfilePath(kStateWorkload), - "CheckSigBlocked", - absl::StrCat(SIGUSR1), - }; - - CheckExec(RunfilePath(kStateWorkload), args, {}, W_EXITCODE(0, 0), ""); -} - -// itimers persist across execve. -// N.B. Timers created with timer_create(2) should not be preserved! -TEST(ExecStateTest, ItimerPreserved) { - // The fork in ForkAndExec clears itimers, so only set them up after fork. - auto setup_itimer = [] { - // Ignore SIGALRM, as we don't actually care about timer - // expirations. - struct sigaction sa; - sa.sa_handler = SIG_IGN; - int ret = sigaction(SIGALRM, &sa, nullptr); - if (ret < 0) { - _exit(errno); - } - - struct itimerval itv; - itv.it_interval.tv_sec = 1; - itv.it_interval.tv_usec = 0; - itv.it_value.tv_sec = 1; - itv.it_value.tv_usec = 0; - ret = setitimer(ITIMER_REAL, &itv, nullptr); - if (ret < 0) { - _exit(errno); - } - }; - - std::string filename = RunfilePath(kStateWorkload); - ExecveArray argv = { - filename, - "CheckItimerEnabled", - absl::StrCat(ITIMER_REAL), - }; - - pid_t child; - int execve_errno; - auto kill = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(filename, argv, {}, setup_itimer, &child, &execve_errno)); - ASSERT_EQ(0, execve_errno); - - int status; - ASSERT_THAT(RetryEINTR(waitpid)(child, &status, 0), SyscallSucceeds()); - EXPECT_EQ(0, status); - - // Process cleanup no longer needed. - kill.Release(); -} - -TEST(ProcSelfExe, ChangesAcrossExecve) { - // See exec_proc_exe_workload for more details. We simply - // assert that the /proc/self/exe link changes across execve. - CheckExec(RunfilePath(kProcExeWorkload), - {RunfilePath(kProcExeWorkload), - ASSERT_NO_ERRNO_AND_VALUE(ProcessExePath(getpid()))}, - {}, W_EXITCODE(0, 0), ""); -} - -TEST(ExecTest, CloexecNormalFile) { - TempPath tempFile = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateFileWith(GetAbsoluteTestTmpdir(), "bar", 0755)); - const FileDescriptor fd_closed_on_exec = - ASSERT_NO_ERRNO_AND_VALUE(Open(tempFile.path(), O_RDONLY | O_CLOEXEC)); - - CheckExec(RunfilePath(kAssertClosedWorkload), - {RunfilePath(kAssertClosedWorkload), - absl::StrCat(fd_closed_on_exec.get())}, - {}, W_EXITCODE(0, 0), ""); - - // The assert closed workload exits with code 2 if the file still exists. We - // can use this to do a negative test. - const FileDescriptor fd_open_on_exec = - ASSERT_NO_ERRNO_AND_VALUE(Open(tempFile.path(), O_RDONLY)); - - CheckExec( - RunfilePath(kAssertClosedWorkload), - {RunfilePath(kAssertClosedWorkload), absl::StrCat(fd_open_on_exec.get())}, - {}, W_EXITCODE(2, 0), ""); -} - -TEST(ExecTest, CloexecEventfd) { - int efd; - ASSERT_THAT(efd = eventfd(0, EFD_CLOEXEC), SyscallSucceeds()); - FileDescriptor fd(efd); - - CheckExec(RunfilePath(kAssertClosedWorkload), - {RunfilePath(kAssertClosedWorkload), absl::StrCat(fd.get())}, {}, - W_EXITCODE(0, 0), ""); -} - -constexpr int kLinuxMaxSymlinks = 40; - -TEST(ExecTest, SymlinkLimitExceeded) { - std::string path = RunfilePath(kBasicWorkload); - - // Hold onto TempPath objects so they are not destructed prematurely. - std::vector<TempPath> symlinks; - for (int i = 0; i < kLinuxMaxSymlinks + 1; i++) { - symlinks.push_back( - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateSymlinkTo("/tmp", path))); - path = symlinks[i].path(); - } - - int execve_errno; - ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(path, {path}, {}, /*child=*/nullptr, &execve_errno)); - EXPECT_EQ(execve_errno, ELOOP); -} - -TEST(ExecTest, SymlinkLimitRefreshedForInterpreter) { - std::string tmp_dir = "/tmp"; - std::string interpreter_path = "/bin/echo"; - TempPath script = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - tmp_dir, absl::StrCat("#!", interpreter_path), 0755)); - std::string script_path = script.path(); - - // Hold onto TempPath objects so they are not destructed prematurely. - std::vector<TempPath> interpreter_symlinks; - std::vector<TempPath> script_symlinks; - for (int i = 0; i < kLinuxMaxSymlinks; i++) { - interpreter_symlinks.push_back(ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateSymlinkTo(tmp_dir, interpreter_path))); - interpreter_path = interpreter_symlinks[i].path(); - script_symlinks.push_back(ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateSymlinkTo(tmp_dir, script_path))); - script_path = script_symlinks[i].path(); - } - - CheckExec(script_path, {script_path}, {}, ArgEnvExitStatus(0, 0), ""); -} - -TEST(ExecveatTest, BasicWithFDCWD) { - std::string path = RunfilePath(kBasicWorkload); - CheckExecveat(AT_FDCWD, path, {path}, {}, /*flags=*/0, ArgEnvExitStatus(0, 0), - absl::StrCat(path, "\n")); -} - -TEST(ExecveatTest, Basic) { - std::string absolute_path = RunfilePath(kBasicWorkload); - std::string parent_dir = std::string(Dirname(absolute_path)); - std::string base = std::string(Basename(absolute_path)); - const FileDescriptor dirfd = - ASSERT_NO_ERRNO_AND_VALUE(Open(parent_dir, O_DIRECTORY)); - - CheckExecveat(dirfd.get(), base, {absolute_path}, {}, /*flags=*/0, - ArgEnvExitStatus(0, 0), absl::StrCat(absolute_path, "\n")); -} - -TEST(ExecveatTest, FDNotADirectory) { - std::string absolute_path = RunfilePath(kBasicWorkload); - std::string base = std::string(Basename(absolute_path)); - const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(absolute_path, 0)); - - int execve_errno; - ASSERT_NO_ERRNO_AND_VALUE(ForkAndExecveat(fd.get(), base, {absolute_path}, {}, - /*flags=*/0, /*child=*/nullptr, - &execve_errno)); - EXPECT_EQ(execve_errno, ENOTDIR); -} - -TEST(ExecveatTest, AbsolutePathWithFDCWD) { - std::string path = RunfilePath(kBasicWorkload); - CheckExecveat(AT_FDCWD, path, {path}, {}, ArgEnvExitStatus(0, 0), 0, - absl::StrCat(path, "\n")); -} - -TEST(ExecveatTest, AbsolutePath) { - std::string path = RunfilePath(kBasicWorkload); - // File descriptor should be ignored when an absolute path is given. - const int32_t badFD = -1; - CheckExecveat(badFD, path, {path}, {}, ArgEnvExitStatus(0, 0), 0, - absl::StrCat(path, "\n")); -} - -TEST(ExecveatTest, EmptyPathBasic) { - std::string path = RunfilePath(kBasicWorkload); - const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(path, O_PATH)); - - CheckExecveat(fd.get(), "", {path}, {}, AT_EMPTY_PATH, ArgEnvExitStatus(0, 0), - absl::StrCat(path, "\n")); -} - -TEST(ExecveatTest, EmptyPathWithDirFD) { - std::string path = RunfilePath(kBasicWorkload); - std::string parent_dir = std::string(Dirname(path)); - const FileDescriptor dirfd = - ASSERT_NO_ERRNO_AND_VALUE(Open(parent_dir, O_DIRECTORY)); - - int execve_errno; - ASSERT_NO_ERRNO_AND_VALUE(ForkAndExecveat(dirfd.get(), "", {path}, {}, - AT_EMPTY_PATH, - /*child=*/nullptr, &execve_errno)); - EXPECT_EQ(execve_errno, EACCES); -} - -TEST(ExecveatTest, EmptyPathWithoutEmptyPathFlag) { - std::string path = RunfilePath(kBasicWorkload); - const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(path, O_PATH)); - - int execve_errno; - ASSERT_NO_ERRNO_AND_VALUE(ForkAndExecveat( - fd.get(), "", {path}, {}, /*flags=*/0, /*child=*/nullptr, &execve_errno)); - EXPECT_EQ(execve_errno, ENOENT); -} - -TEST(ExecveatTest, AbsolutePathWithEmptyPathFlag) { - std::string path = RunfilePath(kBasicWorkload); - const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(path, O_PATH)); - - CheckExecveat(fd.get(), path, {path}, {}, AT_EMPTY_PATH, - ArgEnvExitStatus(0, 0), absl::StrCat(path, "\n")); -} - -TEST(ExecveatTest, RelativePathWithEmptyPathFlag) { - std::string absolute_path = RunfilePath(kBasicWorkload); - std::string parent_dir = std::string(Dirname(absolute_path)); - std::string base = std::string(Basename(absolute_path)); - const FileDescriptor dirfd = - ASSERT_NO_ERRNO_AND_VALUE(Open(parent_dir, O_DIRECTORY)); - - CheckExecveat(dirfd.get(), base, {absolute_path}, {}, AT_EMPTY_PATH, - ArgEnvExitStatus(0, 0), absl::StrCat(absolute_path, "\n")); -} - -TEST(ExecveatTest, SymlinkNoFollowWithRelativePath) { - std::string parent_dir = "/tmp"; - TempPath link = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateSymlinkTo(parent_dir, RunfilePath(kBasicWorkload))); - const FileDescriptor dirfd = - ASSERT_NO_ERRNO_AND_VALUE(Open(parent_dir, O_DIRECTORY)); - std::string base = std::string(Basename(link.path())); - - int execve_errno; - ASSERT_NO_ERRNO_AND_VALUE(ForkAndExecveat(dirfd.get(), base, {base}, {}, - AT_SYMLINK_NOFOLLOW, - /*child=*/nullptr, &execve_errno)); - EXPECT_EQ(execve_errno, ELOOP); -} - -TEST(ExecveatTest, SymlinkNoFollowWithAbsolutePath) { - std::string parent_dir = "/tmp"; - TempPath link = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateSymlinkTo(parent_dir, RunfilePath(kBasicWorkload))); - std::string path = link.path(); - - int execve_errno; - ASSERT_NO_ERRNO_AND_VALUE(ForkAndExecveat(AT_FDCWD, path, {path}, {}, - AT_SYMLINK_NOFOLLOW, - /*child=*/nullptr, &execve_errno)); - EXPECT_EQ(execve_errno, ELOOP); -} - -TEST(ExecveatTest, SymlinkNoFollowAndEmptyPath) { - TempPath link = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateSymlinkTo("/tmp", RunfilePath(kBasicWorkload))); - std::string path = link.path(); - const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(path, 0)); - - CheckExecveat(fd.get(), "", {path}, {}, AT_EMPTY_PATH | AT_SYMLINK_NOFOLLOW, - ArgEnvExitStatus(0, 0), absl::StrCat(path, "\n")); -} - -TEST(ExecveatTest, SymlinkNoFollowIgnoreSymlinkAncestor) { - TempPath parent_link = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateSymlinkTo("/tmp", "/bin")); - std::string path_with_symlink = JoinPath(parent_link.path(), "echo"); - - CheckExecveat(AT_FDCWD, path_with_symlink, {path_with_symlink}, {}, - AT_SYMLINK_NOFOLLOW, ArgEnvExitStatus(0, 0), ""); -} - -TEST(ExecveatTest, SymlinkNoFollowWithNormalFile) { - const FileDescriptor dirfd = - ASSERT_NO_ERRNO_AND_VALUE(Open("/bin", O_DIRECTORY)); - - CheckExecveat(dirfd.get(), "echo", {"echo"}, {}, AT_SYMLINK_NOFOLLOW, - ArgEnvExitStatus(0, 0), ""); -} - -TEST(ExecveatTest, BasicWithCloexecFD) { - std::string path = RunfilePath(kBasicWorkload); - const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(path, O_CLOEXEC)); - - CheckExecveat(fd.get(), "", {path}, {}, AT_SYMLINK_NOFOLLOW | AT_EMPTY_PATH, - ArgEnvExitStatus(0, 0), absl::StrCat(path, "\n")); -} - -TEST(ExecveatTest, InterpreterScriptWithCloexecFD) { - std::string path = RunfilePath(kExitScript); - const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(path, O_CLOEXEC)); - - int execve_errno; - ASSERT_NO_ERRNO_AND_VALUE(ForkAndExecveat(fd.get(), "", {path}, {}, - AT_EMPTY_PATH, /*child=*/nullptr, - &execve_errno)); - EXPECT_EQ(execve_errno, ENOENT); -} - -TEST(ExecveatTest, InterpreterScriptWithCloexecDirFD) { - std::string absolute_path = RunfilePath(kExitScript); - std::string parent_dir = std::string(Dirname(absolute_path)); - std::string base = std::string(Basename(absolute_path)); - const FileDescriptor dirfd = - ASSERT_NO_ERRNO_AND_VALUE(Open(parent_dir, O_CLOEXEC | O_DIRECTORY)); - - int execve_errno; - ASSERT_NO_ERRNO_AND_VALUE(ForkAndExecveat(dirfd.get(), base, {base}, {}, - /*flags=*/0, /*child=*/nullptr, - &execve_errno)); - EXPECT_EQ(execve_errno, ENOENT); -} - -TEST(ExecveatTest, InvalidFlags) { - int execve_errno; - ASSERT_NO_ERRNO_AND_VALUE(ForkAndExecveat( - /*dirfd=*/-1, "", {}, {}, /*flags=*/0xFFFF, /*child=*/nullptr, - &execve_errno)); - EXPECT_EQ(execve_errno, EINVAL); -} - -// Priority consistent across calls to execve() -TEST(GetpriorityTest, ExecveMaintainsPriority) { - int prio = 16; - ASSERT_THAT(setpriority(PRIO_PROCESS, getpid(), prio), SyscallSucceeds()); - - // To avoid trying to use negative exit values, check for - // 20 - prio. Since prio should always be in the range [-20, 19], - // this leave expected_exit_code in the range [1, 40]. - int expected_exit_code = 20 - prio; - - // Program run (priority_execve) will exit(X) where - // X=getpriority(PRIO_PROCESS,0). Check that this exit value is prio. - CheckExec(RunfilePath(kPriorityWorkload), {RunfilePath(kPriorityWorkload)}, - {}, W_EXITCODE(expected_exit_code, 0), ""); -} - -void ExecWithThread() { - // Used to ensure that the thread has actually started. - absl::Mutex mu; - bool started = false; - - ScopedThread t([&] { - mu.Lock(); - started = true; - mu.Unlock(); - - while (true) { - pause(); - } - }); - - mu.LockWhen(absl::Condition(&started)); - mu.Unlock(); - - const ExecveArray argv = {"/proc/self/exe", kExit42}; - const ExecveArray envv; - - execve("/proc/self/exe", argv.get(), envv.get()); - exit(errno); -} - -void ExecFromThread() { - ScopedThread t([] { - const ExecveArray argv = {"/proc/self/exe", kExit42}; - const ExecveArray envv; - - execve("/proc/self/exe", argv.get(), envv.get()); - exit(errno); - }); - - while (true) { - pause(); - } -} - -bool ValidateProcCmdlineVsArgv(const int argc, const char* const* argv) { - auto contents_or = GetContents("/proc/self/cmdline"); - if (!contents_or.ok()) { - std::cerr << "Unable to get /proc/self/cmdline: " << contents_or.error(); - return false; - } - auto contents = contents_or.ValueOrDie(); - if (contents.back() != '\0') { - std::cerr << "Non-null terminated /proc/self/cmdline!"; - return false; - } - contents.pop_back(); - std::vector<std::string> procfs_cmdline = absl::StrSplit(contents, '\0'); - - if (static_cast<int>(procfs_cmdline.size()) != argc) { - std::cerr << "argc = " << argc << " != " << procfs_cmdline.size(); - return false; - } - - for (int i = 0; i < argc; ++i) { - if (procfs_cmdline[i] != argv[i]) { - std::cerr << "Procfs command line argument " << i << " mismatch " - << procfs_cmdline[i] << " != " << argv[i]; - return false; - } - } - return true; -} - -} // namespace - -} // namespace testing -} // namespace gvisor - -int main(int argc, char** argv) { - // Start by validating that the stack argv is consistent with procfs. - if (!gvisor::testing::ValidateProcCmdlineVsArgv(argc, argv)) { - return 1; - } - - // Some of these tests require no background threads, so check for them before - // TestInit. - for (int i = 0; i < argc; i++) { - absl::string_view arg(argv[i]); - - if (arg == gvisor::testing::kExit42) { - return 42; - } - if (arg == gvisor::testing::kExecWithThread) { - gvisor::testing::ExecWithThread(); - return 1; - } - if (arg == gvisor::testing::kExecFromThread) { - gvisor::testing::ExecFromThread(); - return 1; - } - } - - gvisor::testing::TestInit(&argc, &argv); - - return RUN_ALL_TESTS(); -} diff --git a/test/syscalls/linux/exec.h b/test/syscalls/linux/exec.h deleted file mode 100644 index 5c0f7e654..000000000 --- a/test/syscalls/linux/exec.h +++ /dev/null @@ -1,34 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_SYSCALLS_EXEC_H_ -#define GVISOR_TEST_SYSCALLS_EXEC_H_ - -#include <sys/wait.h> - -namespace gvisor { -namespace testing { - -// Returns the exit code used by exec_basic_workload. -inline int ArgEnvExitCode(int args, int envs) { return args + envs * 10; } - -// Returns the exit status used by exec_basic_workload. -inline int ArgEnvExitStatus(int args, int envs) { - return W_EXITCODE(ArgEnvExitCode(args, envs), 0); -} - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_SYSCALLS_EXEC_H_ diff --git a/test/syscalls/linux/exec_assert_closed_workload.cc b/test/syscalls/linux/exec_assert_closed_workload.cc deleted file mode 100644 index 95643618d..000000000 --- a/test/syscalls/linux/exec_assert_closed_workload.cc +++ /dev/null @@ -1,45 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <stdlib.h> -#include <sys/stat.h> -#include <unistd.h> - -#include <iostream> - -#include "absl/strings/numbers.h" - -int main(int argc, char** argv) { - if (argc != 2) { - std::cerr << "need two arguments, got " << argc; - exit(1); - } - int fd; - if (!absl::SimpleAtoi(argv[1], &fd)) { - std::cerr << "fd: " << argv[1] << " could not be parsed" << std::endl; - exit(1); - } - struct stat s; - if (fstat(fd, &s) == 0) { - std::cerr << "fd: " << argv[1] << " should not be valid" << std::endl; - exit(2); - } - if (errno != EBADF) { - std::cerr << "fstat fd: " << argv[1] << " got errno: " << errno - << " wanted: " << EBADF << std::endl; - exit(1); - } - return 0; -} diff --git a/test/syscalls/linux/exec_basic_workload.cc b/test/syscalls/linux/exec_basic_workload.cc deleted file mode 100644 index 1bbd6437e..000000000 --- a/test/syscalls/linux/exec_basic_workload.cc +++ /dev/null @@ -1,31 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <stdlib.h> - -#include <iostream> - -#include "test/syscalls/linux/exec.h" - -int main(int argc, char** argv, char** envp) { - int i; - for (i = 0; i < argc; i++) { - std::cerr << argv[i] << std::endl; - } - for (i = 0; envp[i] != nullptr; i++) { - std::cerr << envp[i] << std::endl; - } - exit(gvisor::testing::ArgEnvExitCode(argc - 1, i)); - return 0; -} diff --git a/test/syscalls/linux/exec_binary.cc b/test/syscalls/linux/exec_binary.cc deleted file mode 100644 index 736452b0c..000000000 --- a/test/syscalls/linux/exec_binary.cc +++ /dev/null @@ -1,1521 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <elf.h> -#include <errno.h> -#include <signal.h> -#include <sys/ptrace.h> -#include <sys/syscall.h> -#include <sys/types.h> -#include <sys/user.h> -#include <unistd.h> - -#include <algorithm> -#include <functional> -#include <iterator> -#include <tuple> -#include <utility> -#include <vector> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "absl/strings/str_cat.h" -#include "absl/strings/string_view.h" -#include "test/util/cleanup.h" -#include "test/util/file_descriptor.h" -#include "test/util/fs_util.h" -#include "test/util/multiprocess_util.h" -#include "test/util/posix_error.h" -#include "test/util/proc_util.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -using ::testing::AnyOf; -using ::testing::Eq; - -#ifndef __x86_64__ -// The assembly stub and ELF internal details must be ported to other arches. -#error "Test only supported on x86-64" -#endif // __x86_64__ - -// amd64 stub that calls PTRACE_TRACEME and sends itself SIGSTOP. -const char kPtraceCode[] = { - // movq $101, %rax /* ptrace */ - '\x48', - '\xc7', - '\xc0', - '\x65', - '\x00', - '\x00', - '\x00', - // movq $0, %rsi /* PTRACE_TRACEME */ - '\x48', - '\xc7', - '\xc6', - '\x00', - '\x00', - '\x00', - '\x00', - // movq $0, %rdi - '\x48', - '\xc7', - '\xc7', - '\x00', - '\x00', - '\x00', - '\x00', - // movq $0, %rdx - '\x48', - '\xc7', - '\xc2', - '\x00', - '\x00', - '\x00', - '\x00', - // movq $0, %r10 - '\x49', - '\xc7', - '\xc2', - '\x00', - '\x00', - '\x00', - '\x00', - // syscall - '\x0f', - '\x05', - - // movq $39, %rax /* getpid */ - '\x48', - '\xc7', - '\xc0', - '\x27', - '\x00', - '\x00', - '\x00', - // syscall - '\x0f', - '\x05', - - // movq %rax, %rdi /* pid */ - '\x48', - '\x89', - '\xc7', - // movq $62, %rax /* kill */ - '\x48', - '\xc7', - '\xc0', - '\x3e', - '\x00', - '\x00', - '\x00', - // movq $19, %rsi /* SIGSTOP */ - '\x48', - '\xc7', - '\xc6', - '\x13', - '\x00', - '\x00', - '\x00', - // syscall - '\x0f', - '\x05', -}; - -// Size of a syscall instruction. -constexpr int kSyscallSize = 2; - -// This test suite tests executable loading in the kernel (ELF and interpreter -// scripts). - -// Parameterized ELF types for 64 and 32 bit. -template <int Size> -struct ElfTypes; - -template <> -struct ElfTypes<64> { - typedef Elf64_Ehdr ElfEhdr; - typedef Elf64_Phdr ElfPhdr; -}; - -template <> -struct ElfTypes<32> { - typedef Elf32_Ehdr ElfEhdr; - typedef Elf32_Phdr ElfPhdr; -}; - -template <int Size> -struct ElfBinary { - using ElfEhdr = typename ElfTypes<Size>::ElfEhdr; - using ElfPhdr = typename ElfTypes<Size>::ElfPhdr; - - ElfEhdr header = {}; - std::vector<ElfPhdr> phdrs; - std::vector<char> data; - - // UpdateOffsets updates p_offset, p_vaddr in all phdrs to account for the - // space taken by the header and phdrs. - // - // It also updates header.e_phnum and adds the offset to header.e_entry to - // account for the headers residing in the first PT_LOAD segment. - // - // Before calling UpdateOffsets each of those fields should be the appropriate - // offset into data. - void UpdateOffsets() { - size_t offset = sizeof(header) + phdrs.size() * sizeof(ElfPhdr); - header.e_entry += offset; - header.e_phnum = phdrs.size(); - for (auto& p : phdrs) { - p.p_offset += offset; - p.p_vaddr += offset; - } - } - - // AddInterpreter adds a PT_INTERP segment with the passed contents. - // - // A later call to UpdateOffsets is required to make the new phdr valid. - void AddInterpreter(std::vector<char> contents) { - const int start = data.size(); - data.insert(data.end(), contents.begin(), contents.end()); - const int size = data.size() - start; - - ElfPhdr phdr = {}; - phdr.p_type = PT_INTERP; - phdr.p_offset = start; - phdr.p_filesz = size; - phdr.p_memsz = size; - // "If [PT_INTERP] is present, it must precede any loadable segment entry." - phdrs.insert(phdrs.begin(), phdr); - } - - // Writes the header, phdrs, and data to fd. - PosixError Write(int fd) const { - int ret = WriteFd(fd, &header, sizeof(header)); - if (ret < 0) { - return PosixError(errno, "failed to write header"); - } else if (ret != sizeof(header)) { - return PosixError(EIO, absl::StrCat("short write of header: ", ret)); - } - - for (auto const& p : phdrs) { - ret = WriteFd(fd, &p, sizeof(p)); - if (ret < 0) { - return PosixError(errno, "failed to write phdr"); - } else if (ret != sizeof(p)) { - return PosixError(EIO, absl::StrCat("short write of phdr: ", ret)); - } - } - - ret = WriteFd(fd, data.data(), data.size()); - if (ret < 0) { - return PosixError(errno, "failed to write data"); - } else if (ret != static_cast<int>(data.size())) { - return PosixError(EIO, absl::StrCat("short write of data: ", ret)); - } - - return NoError(); - } -}; - -// Creates a new temporary executable ELF file in parent with elf as the -// contents. -template <int Size> -PosixErrorOr<TempPath> CreateElfWith(absl::string_view parent, - ElfBinary<Size> const& elf) { - ASSIGN_OR_RETURN_ERRNO( - auto file, TempPath::CreateFileWith(parent, absl::string_view(), 0755)); - ASSIGN_OR_RETURN_ERRNO(auto fd, Open(file.path(), O_RDWR)); - RETURN_IF_ERRNO(elf.Write(fd.get())); - return std::move(file); -} - -// Creates a new temporary executable ELF file with elf as the contents. -template <int Size> -PosixErrorOr<TempPath> CreateElfWith(ElfBinary<Size> const& elf) { - return CreateElfWith(GetAbsoluteTestTmpdir(), elf); -} - -// Wait for pid to stop, and assert that it stopped via SIGSTOP. -PosixError WaitStopped(pid_t pid) { - int status; - int ret = RetryEINTR(waitpid)(pid, &status, 0); - MaybeSave(); - if (ret < 0) { - return PosixError(errno, "wait failed"); - } else if (ret != pid) { - return PosixError(ESRCH, absl::StrCat("wait got ", ret, " want ", pid)); - } - - if (!WIFSTOPPED(status) || WSTOPSIG(status) != SIGSTOP) { - return PosixError(EINVAL, - absl::StrCat("pid did not SIGSTOP; status = ", status)); - } - - return NoError(); -} - -// Returns a valid ELF that PTRACE_TRACEME and SIGSTOPs itself. -// -// UpdateOffsets must be called before writing this ELF. -ElfBinary<64> StandardElf() { - ElfBinary<64> elf; - elf.header.e_ident[EI_MAG0] = ELFMAG0; - elf.header.e_ident[EI_MAG1] = ELFMAG1; - elf.header.e_ident[EI_MAG2] = ELFMAG2; - elf.header.e_ident[EI_MAG3] = ELFMAG3; - elf.header.e_ident[EI_CLASS] = ELFCLASS64; - elf.header.e_ident[EI_DATA] = ELFDATA2LSB; - elf.header.e_ident[EI_VERSION] = EV_CURRENT; - elf.header.e_type = ET_EXEC; - elf.header.e_machine = EM_X86_64; - elf.header.e_version = EV_CURRENT; - elf.header.e_phoff = sizeof(elf.header); - elf.header.e_phentsize = sizeof(decltype(elf)::ElfPhdr); - - // TODO(gvisor.dev/issue/153): Always include a PT_GNU_STACK segment to - // disable executable stacks. With this omitted the stack (and all PROT_READ) - // mappings should be executable, but gVisor doesn't support that. - decltype(elf)::ElfPhdr phdr = {}; - phdr.p_type = PT_GNU_STACK; - phdr.p_flags = PF_R | PF_W; - elf.phdrs.push_back(phdr); - - phdr = {}; - phdr.p_type = PT_LOAD; - phdr.p_flags = PF_R | PF_X; - phdr.p_offset = 0; - phdr.p_vaddr = 0x40000; - phdr.p_filesz = sizeof(kPtraceCode); - phdr.p_memsz = phdr.p_filesz; - elf.phdrs.push_back(phdr); - - elf.header.e_entry = phdr.p_vaddr; - - elf.data.assign(kPtraceCode, kPtraceCode + sizeof(kPtraceCode)); - - return elf; -} - -// Test that a trivial binary executes. -TEST(ElfTest, Execute) { - ElfBinary<64> elf = StandardElf(); - elf.UpdateOffsets(); - - TempPath file = ASSERT_NO_ERRNO_AND_VALUE(CreateElfWith(elf)); - - pid_t child; - int execve_errno; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(file.path(), {file.path()}, {}, &child, &execve_errno)); - ASSERT_EQ(execve_errno, 0); - - // Ensure it made it to SIGSTOP. - ASSERT_NO_ERRNO(WaitStopped(child)); - - struct user_regs_struct regs; - ASSERT_THAT(ptrace(PTRACE_GETREGS, child, 0, ®s), SyscallSucceeds()); - // RIP is just beyond the final syscall instruction. - EXPECT_EQ(regs.rip, elf.header.e_entry + sizeof(kPtraceCode)); - - EXPECT_THAT(child, ContainsMappings(std::vector<ProcMapsEntry>({ - {0x40000, 0x41000, true, false, true, true, 0, 0, 0, 0, - file.path().c_str()}, - }))); -} - -// StandardElf without data completes execve, but faults once running. -TEST(ElfTest, MissingText) { - ElfBinary<64> elf = StandardElf(); - elf.data.clear(); - elf.UpdateOffsets(); - - TempPath file = ASSERT_NO_ERRNO_AND_VALUE(CreateElfWith(elf)); - - pid_t child; - int execve_errno; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(file.path(), {file.path()}, {}, &child, &execve_errno)); - ASSERT_EQ(execve_errno, 0); - - int status; - ASSERT_THAT(RetryEINTR(waitpid)(child, &status, 0), - SyscallSucceedsWithValue(child)); - // It runs off the end of the zeroes filling the end of the page. - EXPECT_TRUE(WIFSIGNALED(status) && WTERMSIG(status) == SIGSEGV) << status; -} - -// Typical ELF with a data + bss segment -TEST(ElfTest, DataSegment) { - ElfBinary<64> elf = StandardElf(); - - // Create a standard ELF, but extend to 1.5 pages. The second page will be the - // beginning of a multi-page data + bss segment. - elf.data.resize(kPageSize + kPageSize / 2); - - decltype(elf)::ElfPhdr phdr = {}; - phdr.p_type = PT_LOAD; - phdr.p_flags = PF_R | PF_W; - phdr.p_offset = kPageSize; - phdr.p_vaddr = 0x41000; - phdr.p_filesz = kPageSize / 2; - // The header is going to push vaddr up by a few hundred bytes. Keep p_memsz a - // bit less than 2 pages so this mapping doesn't extend beyond 0x43000. - phdr.p_memsz = 2 * kPageSize - kPageSize / 2; - elf.phdrs.push_back(phdr); - - elf.UpdateOffsets(); - - TempPath file = ASSERT_NO_ERRNO_AND_VALUE(CreateElfWith(elf)); - - pid_t child; - int execve_errno; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(file.path(), {file.path()}, {}, &child, &execve_errno)); - ASSERT_EQ(execve_errno, 0); - - ASSERT_NO_ERRNO(WaitStopped(child)); - - EXPECT_THAT( - child, ContainsMappings(std::vector<ProcMapsEntry>({ - // text page. - {0x40000, 0x41000, true, false, true, true, 0, 0, 0, 0, - file.path().c_str()}, - // data + bss page from file. - {0x41000, 0x42000, true, true, false, true, kPageSize, 0, 0, 0, - file.path().c_str()}, - // bss page from anon. - {0x42000, 0x43000, true, true, false, true, 0, 0, 0, 0, ""}, - }))); -} - -// Additonal pages beyond filesz honor (only) execute protections. -// -// N.B. Linux changed this in 4.11 (16e72e9b30986 "powerpc: do not make the -// entire heap executable"). Previously, extra pages were always RW. -TEST(ElfTest, ExtraMemPages) { - // gVisor has the newer behavior. - if (!IsRunningOnGvisor()) { - auto version = ASSERT_NO_ERRNO_AND_VALUE(GetKernelVersion()); - SKIP_IF(version.major < 4 || (version.major == 4 && version.minor < 11)); - } - - ElfBinary<64> elf = StandardElf(); - - // Create a standard ELF, but extend to 1.5 pages. The second page will be the - // beginning of a multi-page data + bss segment. - elf.data.resize(kPageSize + kPageSize / 2); - - decltype(elf)::ElfPhdr phdr = {}; - phdr.p_type = PT_LOAD; - // RWX segment. The extra anon page will also be RWX. - // - // N.B. Linux uses clear_user to clear the end of the file-mapped page, which - // respects the mapping protections. Thus if we map this RO with memsz > - // (unaligned) filesz, then execve will fail with EFAULT. See padzero(elf_bss) - // in fs/binfmt_elf.c:load_elf_binary. - // - // N.N.B.B. The above only applies to the last segment. For earlier segments, - // the clear_user error is ignored. - phdr.p_flags = PF_R | PF_W | PF_X; - phdr.p_offset = kPageSize; - phdr.p_vaddr = 0x41000; - phdr.p_filesz = kPageSize / 2; - // The header is going to push vaddr up by a few hundred bytes. Keep p_memsz a - // bit less than 2 pages so this mapping doesn't extend beyond 0x43000. - phdr.p_memsz = 2 * kPageSize - kPageSize / 2; - elf.phdrs.push_back(phdr); - - elf.UpdateOffsets(); - - TempPath file = ASSERT_NO_ERRNO_AND_VALUE(CreateElfWith(elf)); - - pid_t child; - int execve_errno; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(file.path(), {file.path()}, {}, &child, &execve_errno)); - ASSERT_EQ(execve_errno, 0); - - ASSERT_NO_ERRNO(WaitStopped(child)); - - EXPECT_THAT(child, - ContainsMappings(std::vector<ProcMapsEntry>({ - // text page. - {0x40000, 0x41000, true, false, true, true, 0, 0, 0, 0, - file.path().c_str()}, - // data + bss page from file. - {0x41000, 0x42000, true, true, true, true, kPageSize, 0, 0, 0, - file.path().c_str()}, - // extra page from anon. - {0x42000, 0x43000, true, true, true, true, 0, 0, 0, 0, ""}, - }))); -} - -// An aligned segment with filesz == 0, memsz > 0 is anon-only. -TEST(ElfTest, AnonOnlySegment) { - ElfBinary<64> elf = StandardElf(); - - decltype(elf)::ElfPhdr phdr = {}; - phdr.p_type = PT_LOAD; - // RO segment. The extra anon page will be RW anyways. - phdr.p_flags = PF_R; - phdr.p_offset = 0; - phdr.p_vaddr = 0x41000; - phdr.p_filesz = 0; - phdr.p_memsz = kPageSize; - elf.phdrs.push_back(phdr); - - elf.UpdateOffsets(); - - // UpdateOffsets adjusts p_vaddr and p_offset by the header size, but we need - // a page-aligned p_vaddr to get a truly anon-only page. - elf.phdrs[2].p_vaddr = 0x41000; - // N.B. p_offset is now unaligned, but Linux doesn't care since this is - // anon-only. - - TempPath file = ASSERT_NO_ERRNO_AND_VALUE(CreateElfWith(elf)); - - pid_t child; - int execve_errno; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(file.path(), {file.path()}, {}, &child, &execve_errno)); - ASSERT_EQ(execve_errno, 0); - - ASSERT_NO_ERRNO(WaitStopped(child)); - - EXPECT_THAT(child, - ContainsMappings(std::vector<ProcMapsEntry>({ - // text page. - {0x40000, 0x41000, true, false, true, true, 0, 0, 0, 0, - file.path().c_str()}, - // anon page. - {0x41000, 0x42000, true, true, false, true, 0, 0, 0, 0, ""}, - }))); -} - -// p_offset must have the same alignment as p_vaddr. -TEST(ElfTest, UnalignedOffset) { - ElfBinary<64> elf = StandardElf(); - - // Unaligned offset. - elf.phdrs[1].p_offset += 1; - - elf.UpdateOffsets(); - - TempPath file = ASSERT_NO_ERRNO_AND_VALUE(CreateElfWith(elf)); - - pid_t child; - int execve_errno; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(file.path(), {file.path()}, {}, &child, &execve_errno)); - - // execve(2) return EINVAL, but behavior varies between Linux and gVisor. - // - // On Linux, the new mm is committed before attempting to map into it. By the - // time we hit EINVAL in the segment mmap, the old mm is gone. Linux returns - // to an empty mm, which immediately segfaults. - // - // OTOH, gVisor maps into the new mm before committing it. Thus when it hits - // failure, the caller is still intact to receive the error. - if (IsRunningOnGvisor()) { - ASSERT_EQ(execve_errno, EINVAL); - } else { - ASSERT_EQ(execve_errno, 0); - - int status; - ASSERT_THAT(RetryEINTR(waitpid)(child, &status, 0), - SyscallSucceedsWithValue(child)); - EXPECT_TRUE(WIFSIGNALED(status) && WTERMSIG(status) == SIGSEGV) << status; - } -} - -// Linux will allow PT_LOAD segments to overlap. -TEST(ElfTest, DirectlyOverlappingSegments) { - // NOTE(b/37289926): see PIEOutOfOrderSegments. - SKIP_IF(IsRunningOnGvisor()); - - ElfBinary<64> elf = StandardElf(); - - // Same as the StandardElf mapping. - decltype(elf)::ElfPhdr phdr = {}; - phdr.p_type = PT_LOAD; - // Add PF_W so we can differentiate this mapping from the first. - phdr.p_flags = PF_R | PF_W | PF_X; - phdr.p_offset = 0; - phdr.p_vaddr = 0x40000; - phdr.p_filesz = sizeof(kPtraceCode); - phdr.p_memsz = phdr.p_filesz; - elf.phdrs.push_back(phdr); - - elf.UpdateOffsets(); - - TempPath file = ASSERT_NO_ERRNO_AND_VALUE(CreateElfWith(elf)); - - pid_t child; - int execve_errno; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(file.path(), {file.path()}, {}, &child, &execve_errno)); - ASSERT_EQ(execve_errno, 0); - - ASSERT_NO_ERRNO(WaitStopped(child)); - - EXPECT_THAT(child, ContainsMappings(std::vector<ProcMapsEntry>({ - {0x40000, 0x41000, true, true, true, true, 0, 0, 0, 0, - file.path().c_str()}, - }))); -} - -// Linux allows out-of-order PT_LOAD segments. -TEST(ElfTest, OutOfOrderSegments) { - // NOTE(b/37289926): see PIEOutOfOrderSegments. - SKIP_IF(IsRunningOnGvisor()); - - ElfBinary<64> elf = StandardElf(); - - decltype(elf)::ElfPhdr phdr = {}; - phdr.p_type = PT_LOAD; - phdr.p_flags = PF_R | PF_X; - phdr.p_offset = 0; - phdr.p_vaddr = 0x20000; - phdr.p_filesz = sizeof(kPtraceCode); - phdr.p_memsz = phdr.p_filesz; - elf.phdrs.push_back(phdr); - - elf.UpdateOffsets(); - - TempPath file = ASSERT_NO_ERRNO_AND_VALUE(CreateElfWith(elf)); - - pid_t child; - int execve_errno; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(file.path(), {file.path()}, {}, &child, &execve_errno)); - ASSERT_EQ(execve_errno, 0); - - ASSERT_NO_ERRNO(WaitStopped(child)); - - EXPECT_THAT(child, ContainsMappings(std::vector<ProcMapsEntry>({ - {0x20000, 0x21000, true, false, true, true, 0, 0, 0, 0, - file.path().c_str()}, - {0x40000, 0x41000, true, false, true, true, 0, 0, 0, 0, - file.path().c_str()}, - }))); -} - -// header.e_phoff is bound the end of the file. -TEST(ElfTest, OutOfBoundsPhdrs) { - ElfBinary<64> elf = StandardElf(); - elf.header.e_phoff = 0x100000; - elf.UpdateOffsets(); - - TempPath file = ASSERT_NO_ERRNO_AND_VALUE(CreateElfWith(elf)); - - pid_t child; - int execve_errno; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(file.path(), {file.path()}, {}, &child, &execve_errno)); - // On Linux 3.11, this caused EIO. On newer Linux, it causes ENOEXEC. - EXPECT_THAT(execve_errno, AnyOf(Eq(ENOEXEC), Eq(EIO))); -} - -// Claim there is a phdr beyond the end of the file, but don't include it. -TEST(ElfTest, MissingPhdr) { - ElfBinary<64> elf = StandardElf(); - - // Clear data so the file ends immediately after the phdrs. - // N.B. Per ElfTest.MissingData, StandardElf without data completes execve - // without error. - elf.data.clear(); - elf.UpdateOffsets(); - - // Claim that there is another phdr just beyond the end of the file. Of - // course, it isn't accessible. - elf.header.e_phnum++; - - TempPath file = ASSERT_NO_ERRNO_AND_VALUE(CreateElfWith(elf)); - - pid_t child; - int execve_errno; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(file.path(), {file.path()}, {}, &child, &execve_errno)); - // On Linux 3.11, this caused EIO. On newer Linux, it causes ENOEXEC. - EXPECT_THAT(execve_errno, AnyOf(Eq(ENOEXEC), Eq(EIO))); -} - -// No headers at all, just the ELF magic. -TEST(ElfTest, MissingHeader) { - TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileMode(0755)); - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR)); - - const char kElfMagic[] = {0x7f, 'E', 'L', 'F'}; - - ASSERT_THAT(WriteFd(fd.get(), &kElfMagic, sizeof(kElfMagic)), - SyscallSucceeds()); - fd.reset(); - - pid_t child; - int execve_errno; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(file.path(), {file.path()}, {}, &child, &execve_errno)); - EXPECT_EQ(execve_errno, ENOEXEC); -} - -// Load a PIE ELF with a data + bss segment. -TEST(ElfTest, PIE) { - ElfBinary<64> elf = StandardElf(); - - elf.header.e_type = ET_DYN; - - // Create a standard ELF, but extend to 1.5 pages. The second page will be the - // beginning of a multi-page data + bss segment. - elf.data.resize(kPageSize + kPageSize / 2); - - elf.header.e_entry = 0x0; - - decltype(elf)::ElfPhdr phdr = {}; - phdr.p_type = PT_LOAD; - phdr.p_flags = PF_R | PF_W; - phdr.p_offset = kPageSize; - // Put the data segment at a bit of an offset. - phdr.p_vaddr = 0x20000; - phdr.p_filesz = kPageSize / 2; - // The header is going to push vaddr up by a few hundred bytes. Keep p_memsz a - // bit less than 2 pages so this mapping doesn't extend beyond 0x43000. - phdr.p_memsz = 2 * kPageSize - kPageSize / 2; - elf.phdrs.push_back(phdr); - - elf.UpdateOffsets(); - - // The first segment really needs to start at 0 for a normal PIE binary, and - // thus includes the headers. - const uint64_t offset = elf.phdrs[1].p_offset; - elf.phdrs[1].p_offset = 0x0; - elf.phdrs[1].p_vaddr = 0x0; - elf.phdrs[1].p_filesz += offset; - elf.phdrs[1].p_memsz += offset; - - TempPath file = ASSERT_NO_ERRNO_AND_VALUE(CreateElfWith(elf)); - - pid_t child; - int execve_errno; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(file.path(), {file.path()}, {}, &child, &execve_errno)); - ASSERT_EQ(execve_errno, 0); - - ASSERT_NO_ERRNO(WaitStopped(child)); - - // RIP tells us which page the first segment was loaded into. - struct user_regs_struct regs; - ASSERT_THAT(ptrace(PTRACE_GETREGS, child, 0, ®s), SyscallSucceeds()); - - const uint64_t load_addr = regs.rip & ~(kPageSize - 1); - - EXPECT_THAT(child, ContainsMappings(std::vector<ProcMapsEntry>({ - // text page. - {load_addr, load_addr + 0x1000, true, false, true, - true, 0, 0, 0, 0, file.path().c_str()}, - // data + bss page from file. - {load_addr + 0x20000, load_addr + 0x21000, true, true, - false, true, kPageSize, 0, 0, 0, file.path().c_str()}, - // bss page from anon. - {load_addr + 0x21000, load_addr + 0x22000, true, true, - false, true, 0, 0, 0, 0, ""}, - }))); -} - -// PIE binary with a non-zero start address. -// -// This is non-standard for a PIE binary, but valid. The binary is still loaded -// at an arbitrary address, not the first PT_LOAD vaddr. -// -// N.B. Linux changed this behavior in d1fd836dcf00d2028c700c7e44d2c23404062c90. -// Previously, with "randomization" enabled, PIE binaries with a non-zero start -// address would be be loaded at the address they specified because mmap was -// passed the load address, which wasn't 0 as expected. -// -// This change is present in kernel v4.1+. -TEST(ElfTest, PIENonZeroStart) { - // gVisor has the newer behavior. - if (!IsRunningOnGvisor()) { - auto version = ASSERT_NO_ERRNO_AND_VALUE(GetKernelVersion()); - SKIP_IF(version.major < 4 || (version.major == 4 && version.minor < 1)); - } - - ElfBinary<64> elf = StandardElf(); - - elf.header.e_type = ET_DYN; - - // Create a standard ELF, but extend to 1.5 pages. The second page will be the - // beginning of a multi-page data + bss segment. - elf.data.resize(kPageSize + kPageSize / 2); - - decltype(elf)::ElfPhdr phdr = {}; - phdr.p_type = PT_LOAD; - phdr.p_flags = PF_R | PF_W; - phdr.p_offset = kPageSize; - // Put the data segment at a bit of an offset. - phdr.p_vaddr = 0x60000; - phdr.p_filesz = kPageSize / 2; - // The header is going to push vaddr up by a few hundred bytes. Keep p_memsz a - // bit less than 2 pages so this mapping doesn't extend beyond 0x43000. - phdr.p_memsz = 2 * kPageSize - kPageSize / 2; - elf.phdrs.push_back(phdr); - - elf.UpdateOffsets(); - - TempPath file = ASSERT_NO_ERRNO_AND_VALUE(CreateElfWith(elf)); - - pid_t child; - int execve_errno; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(file.path(), {file.path()}, {}, &child, &execve_errno)); - ASSERT_EQ(execve_errno, 0); - - ASSERT_NO_ERRNO(WaitStopped(child)); - - // RIP tells us which page the first segment was loaded into. - struct user_regs_struct regs; - ASSERT_THAT(ptrace(PTRACE_GETREGS, child, 0, ®s), SyscallSucceeds()); - - const uint64_t load_addr = regs.rip & ~(kPageSize - 1); - - // The ELF is loaded at an arbitrary address, not the first PT_LOAD vaddr. - // - // N.B. this is technically flaky, but Linux is *extremely* unlikely to pick - // this as the start address, as it searches from the top down. - EXPECT_NE(load_addr, 0x40000); - - EXPECT_THAT(child, ContainsMappings(std::vector<ProcMapsEntry>({ - // text page. - {load_addr, load_addr + 0x1000, true, false, true, - true, 0, 0, 0, 0, file.path().c_str()}, - // data + bss page from file. - {load_addr + 0x20000, load_addr + 0x21000, true, true, - false, true, kPageSize, 0, 0, 0, file.path().c_str()}, - // bss page from anon. - {load_addr + 0x21000, load_addr + 0x22000, true, true, - false, true, 0, 0, 0, 0, ""}, - }))); -} - -TEST(ElfTest, PIEOutOfOrderSegments) { - // TODO(b/37289926): This triggers a bug in Linux where it computes the size - // of the binary as 0x20000 - 0x40000 = 0xfffffffffffe0000, which obviously - // fails to map. - // - // We test gVisor's behavior (of rejecting the binary) because I assert that - // Linux is wrong and needs to be fixed. - SKIP_IF(!IsRunningOnGvisor()); - - ElfBinary<64> elf = StandardElf(); - - elf.header.e_type = ET_DYN; - - // Create a standard ELF, but extend to 1.5 pages. The second page will be the - // beginning of a multi-page data + bss segment. - elf.data.resize(kPageSize + kPageSize / 2); - - decltype(elf)::ElfPhdr phdr = {}; - phdr.p_type = PT_LOAD; - phdr.p_flags = PF_R | PF_W; - phdr.p_offset = kPageSize; - // Put the data segment *before* the first segment. - phdr.p_vaddr = 0x20000; - phdr.p_filesz = kPageSize / 2; - // The header is going to push vaddr up by a few hundred bytes. Keep p_memsz a - // bit less than 2 pages so this mapping doesn't extend beyond 0x43000. - phdr.p_memsz = 2 * kPageSize - kPageSize / 2; - elf.phdrs.push_back(phdr); - - elf.UpdateOffsets(); - - TempPath file = ASSERT_NO_ERRNO_AND_VALUE(CreateElfWith(elf)); - - pid_t child; - int execve_errno; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(file.path(), {file.path()}, {}, &child, &execve_errno)); - EXPECT_EQ(execve_errno, ENOEXEC); -} - -// Standard dynamically linked binary with an ELF interpreter. -TEST(ElfTest, ELFInterpreter) { - ElfBinary<64> interpreter = StandardElf(); - interpreter.header.e_type = ET_DYN; - interpreter.header.e_entry = 0x0; - interpreter.UpdateOffsets(); - - // The first segment really needs to start at 0 for a normal PIE binary, and - // thus includes the headers. - uint64_t const offset = interpreter.phdrs[1].p_offset; - // N.B. Since Linux 4.10 (0036d1f7eb95b "binfmt_elf: fix calculations for bss - // padding"), Linux unconditionally zeroes the remainder of the highest mapped - // page in an interpreter, failing if the protections don't allow write. Thus - // we must mark this writeable. - interpreter.phdrs[1].p_flags = PF_R | PF_W | PF_X; - interpreter.phdrs[1].p_offset = 0x0; - interpreter.phdrs[1].p_vaddr = 0x0; - interpreter.phdrs[1].p_filesz += offset; - interpreter.phdrs[1].p_memsz += offset; - - TempPath interpreter_file = - ASSERT_NO_ERRNO_AND_VALUE(CreateElfWith(interpreter)); - - ElfBinary<64> binary = StandardElf(); - - // Append the interpreter path. - int const interp_data_start = binary.data.size(); - for (char const c : interpreter_file.path()) { - binary.data.push_back(c); - } - // NUL-terminate. - binary.data.push_back(0); - int const interp_data_size = binary.data.size() - interp_data_start; - - decltype(binary)::ElfPhdr phdr = {}; - phdr.p_type = PT_INTERP; - phdr.p_offset = interp_data_start; - phdr.p_filesz = interp_data_size; - phdr.p_memsz = interp_data_size; - // "If [PT_INTERP] is present, it must precede any loadable segment entry." - // - // However, Linux allows it anywhere, so we just stick it at the end to make - // sure out-of-order PT_INTERP is OK. - binary.phdrs.push_back(phdr); - - binary.UpdateOffsets(); - - TempPath binary_file = ASSERT_NO_ERRNO_AND_VALUE(CreateElfWith(binary)); - - pid_t child; - int execve_errno; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE(ForkAndExec( - binary_file.path(), {binary_file.path()}, {}, &child, &execve_errno)); - ASSERT_EQ(execve_errno, 0); - - ASSERT_NO_ERRNO(WaitStopped(child)); - - // RIP tells us which page the first segment of the interpreter was loaded - // into. - struct user_regs_struct regs; - ASSERT_THAT(ptrace(PTRACE_GETREGS, child, 0, ®s), SyscallSucceeds()); - - const uint64_t interp_load_addr = regs.rip & ~(kPageSize - 1); - - EXPECT_THAT( - child, ContainsMappings(std::vector<ProcMapsEntry>({ - // Main binary - {0x40000, 0x41000, true, false, true, true, 0, 0, 0, 0, - binary_file.path().c_str()}, - // Interpreter - {interp_load_addr, interp_load_addr + 0x1000, true, true, true, - true, 0, 0, 0, 0, interpreter_file.path().c_str()}, - }))); -} - -// Test parameter to ElfInterpterStaticTest cases. The first item is a suffix to -// add to the end of the interpreter path in the PT_INTERP segment and the -// second is the expected execve(2) errno. -using ElfInterpreterStaticParam = std::tuple<std::vector<char>, int>; - -class ElfInterpreterStaticTest - : public ::testing::TestWithParam<ElfInterpreterStaticParam> {}; - -// Statically linked ELF with a statically linked ELF interpreter. -TEST_P(ElfInterpreterStaticTest, Test) { - const std::vector<char> segment_suffix = std::get<0>(GetParam()); - const int expected_errno = std::get<1>(GetParam()); - - ElfBinary<64> interpreter = StandardElf(); - // See comment in ElfTest.ELFInterpreter. - interpreter.phdrs[1].p_flags = PF_R | PF_W | PF_X; - interpreter.UpdateOffsets(); - TempPath interpreter_file = - ASSERT_NO_ERRNO_AND_VALUE(CreateElfWith(interpreter)); - - ElfBinary<64> binary = StandardElf(); - // The PT_LOAD segment conflicts with the interpreter's PT_LOAD segment. The - // interpreter's will be mapped directly over the binary's. - - // Interpreter path plus the parameterized suffix in the PT_INTERP segment. - const std::string path = interpreter_file.path(); - std::vector<char> segment(path.begin(), path.end()); - segment.insert(segment.end(), segment_suffix.begin(), segment_suffix.end()); - binary.AddInterpreter(segment); - - binary.UpdateOffsets(); - - TempPath binary_file = ASSERT_NO_ERRNO_AND_VALUE(CreateElfWith(binary)); - - pid_t child; - int execve_errno; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE(ForkAndExec( - binary_file.path(), {binary_file.path()}, {}, &child, &execve_errno)); - ASSERT_EQ(execve_errno, expected_errno); - - if (expected_errno == 0) { - ASSERT_NO_ERRNO(WaitStopped(child)); - - EXPECT_THAT(child, ContainsMappings(std::vector<ProcMapsEntry>({ - // Interpreter. - {0x40000, 0x41000, true, true, true, true, 0, 0, 0, - 0, interpreter_file.path().c_str()}, - }))); - } -} - -INSTANTIATE_TEST_SUITE_P( - Cases, ElfInterpreterStaticTest, - ::testing::ValuesIn({ - // Simple NUL-terminator to run the interpreter as normal. - std::make_tuple(std::vector<char>({'\0'}), 0), - // Add some garbage to the segment followed by a NUL-terminator. This is - // ignored. - std::make_tuple(std::vector<char>({'\0', 'b', '\0'}), 0), - // Add some garbage to the segment without a NUL-terminator. Linux will - // reject - // this. - std::make_tuple(std::vector<char>({'\0', 'b'}), ENOEXEC), - })); - -// Test parameter to ElfInterpterBadPathTest cases. The first item is the -// contents of the PT_INTERP segment and the second is the expected execve(2) -// errno. -using ElfInterpreterBadPathParam = std::tuple<std::vector<char>, int>; - -class ElfInterpreterBadPathTest - : public ::testing::TestWithParam<ElfInterpreterBadPathParam> {}; - -TEST_P(ElfInterpreterBadPathTest, Test) { - const std::vector<char> segment = std::get<0>(GetParam()); - const int expected_errno = std::get<1>(GetParam()); - - ElfBinary<64> binary = StandardElf(); - binary.AddInterpreter(segment); - binary.UpdateOffsets(); - - TempPath binary_file = ASSERT_NO_ERRNO_AND_VALUE(CreateElfWith(binary)); - - int execve_errno; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE(ForkAndExec( - binary_file.path(), {binary_file.path()}, {}, nullptr, &execve_errno)); - EXPECT_EQ(execve_errno, expected_errno); -} - -INSTANTIATE_TEST_SUITE_P( - Cases, ElfInterpreterBadPathTest, - ::testing::ValuesIn({ - // NUL-terminated fake path in the PT_INTERP segment. - std::make_tuple(std::vector<char>({'/', 'f', '/', 'b', '\0'}), ENOENT), - // ELF interpreter not NUL-terminated. - std::make_tuple(std::vector<char>({'/', 'f', '/', 'b'}), ENOEXEC), - // ELF interpreter path omitted entirely. - // - // fs/binfmt_elf.c:load_elf_binary returns ENOEXEC if p_filesz is < 2 - // bytes. - std::make_tuple(std::vector<char>({'\0'}), ENOEXEC), - // ELF interpreter path = "\0". - // - // fs/binfmt_elf.c:load_elf_binary returns ENOEXEC if p_filesz is < 2 - // bytes, so add an extra byte to pass that check. - // - // load_elf_binary -> open_exec -> do_open_execat fails to check that - // name != '\0' before calling do_filp_open, which thus opens the - // working directory. do_open_execat returns EACCES because the - // directory is not a regular file. - std::make_tuple(std::vector<char>({'\0', '\0'}), EACCES), - })); - -// Relative path to ELF interpreter. -TEST(ElfTest, ELFInterpreterRelative) { - ElfBinary<64> interpreter = StandardElf(); - interpreter.header.e_type = ET_DYN; - interpreter.header.e_entry = 0x0; - interpreter.UpdateOffsets(); - - // The first segment really needs to start at 0 for a normal PIE binary, and - // thus includes the headers. - uint64_t const offset = interpreter.phdrs[1].p_offset; - // See comment in ElfTest.ELFInterpreter. - interpreter.phdrs[1].p_flags = PF_R | PF_W | PF_X; - interpreter.phdrs[1].p_offset = 0x0; - interpreter.phdrs[1].p_vaddr = 0x0; - interpreter.phdrs[1].p_filesz += offset; - interpreter.phdrs[1].p_memsz += offset; - - TempPath interpreter_file = - ASSERT_NO_ERRNO_AND_VALUE(CreateElfWith(interpreter)); - auto cwd = ASSERT_NO_ERRNO_AND_VALUE(GetCWD()); - auto interpreter_relative = - ASSERT_NO_ERRNO_AND_VALUE(GetRelativePath(cwd, interpreter_file.path())); - - ElfBinary<64> binary = StandardElf(); - - // NUL-terminated path in the PT_INTERP segment. - std::vector<char> segment(interpreter_relative.begin(), - interpreter_relative.end()); - segment.push_back(0); - binary.AddInterpreter(segment); - - binary.UpdateOffsets(); - - TempPath binary_file = ASSERT_NO_ERRNO_AND_VALUE(CreateElfWith(binary)); - - pid_t child; - int execve_errno; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE(ForkAndExec( - binary_file.path(), {binary_file.path()}, {}, &child, &execve_errno)); - ASSERT_EQ(execve_errno, 0); - - ASSERT_NO_ERRNO(WaitStopped(child)); - - // RIP tells us which page the first segment of the interpreter was loaded - // into. - struct user_regs_struct regs; - ASSERT_THAT(ptrace(PTRACE_GETREGS, child, 0, ®s), SyscallSucceeds()); - - const uint64_t interp_load_addr = regs.rip & ~(kPageSize - 1); - - EXPECT_THAT( - child, ContainsMappings(std::vector<ProcMapsEntry>({ - // Main binary - {0x40000, 0x41000, true, false, true, true, 0, 0, 0, 0, - binary_file.path().c_str()}, - // Interpreter - {interp_load_addr, interp_load_addr + 0x1000, true, true, true, - true, 0, 0, 0, 0, interpreter_file.path().c_str()}, - }))); -} - -// ELF interpreter architecture doesn't match the binary. -TEST(ElfTest, ELFInterpreterWrongArch) { - ElfBinary<64> interpreter = StandardElf(); - interpreter.header.e_machine = EM_PPC64; - interpreter.header.e_type = ET_DYN; - interpreter.header.e_entry = 0x0; - interpreter.UpdateOffsets(); - - // The first segment really needs to start at 0 for a normal PIE binary, and - // thus includes the headers. - uint64_t const offset = interpreter.phdrs[1].p_offset; - // See comment in ElfTest.ELFInterpreter. - interpreter.phdrs[1].p_flags = PF_R | PF_W | PF_X; - interpreter.phdrs[1].p_offset = 0x0; - interpreter.phdrs[1].p_vaddr = 0x0; - interpreter.phdrs[1].p_filesz += offset; - interpreter.phdrs[1].p_memsz += offset; - - TempPath interpreter_file = - ASSERT_NO_ERRNO_AND_VALUE(CreateElfWith(interpreter)); - - ElfBinary<64> binary = StandardElf(); - - // NUL-terminated path in the PT_INTERP segment. - const std::string path = interpreter_file.path(); - std::vector<char> segment(path.begin(), path.end()); - segment.push_back(0); - binary.AddInterpreter(segment); - - binary.UpdateOffsets(); - - TempPath binary_file = ASSERT_NO_ERRNO_AND_VALUE(CreateElfWith(binary)); - - pid_t child; - int execve_errno; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE(ForkAndExec( - binary_file.path(), {binary_file.path()}, {}, &child, &execve_errno)); - ASSERT_EQ(execve_errno, ELIBBAD); -} - -// No execute permissions on the binary. -TEST(ElfTest, NoExecute) { - ElfBinary<64> elf = StandardElf(); - elf.UpdateOffsets(); - - TempPath file = ASSERT_NO_ERRNO_AND_VALUE(CreateElfWith(elf)); - - ASSERT_THAT(chmod(file.path().c_str(), 0644), SyscallSucceeds()); - - pid_t child; - int execve_errno; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(file.path(), {file.path()}, {}, &child, &execve_errno)); - EXPECT_EQ(execve_errno, EACCES); -} - -// Execute, but no read permissions on the binary works just fine. -TEST(ElfTest, NoRead) { - // TODO(gvisor.dev/issue/160): gVisor's backing filesystem may prevent the - // sentry from reading the executable. - SKIP_IF(IsRunningOnGvisor()); - - ElfBinary<64> elf = StandardElf(); - elf.UpdateOffsets(); - - TempPath file = ASSERT_NO_ERRNO_AND_VALUE(CreateElfWith(elf)); - - ASSERT_THAT(chmod(file.path().c_str(), 0111), SyscallSucceeds()); - - pid_t child; - int execve_errno; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(file.path(), {file.path()}, {}, &child, &execve_errno)); - ASSERT_EQ(execve_errno, 0); - - ASSERT_NO_ERRNO(WaitStopped(child)); - - // TODO(gvisor.dev/issue/160): A task with a non-readable executable is marked - // non-dumpable, preventing access to proc files. gVisor does not implement - // this behavior. -} - -// No execute permissions on the ELF interpreter. -TEST(ElfTest, ElfInterpreterNoExecute) { - ElfBinary<64> interpreter = StandardElf(); - interpreter.header.e_type = ET_DYN; - interpreter.header.e_entry = 0x0; - interpreter.UpdateOffsets(); - - // The first segment really needs to start at 0 for a normal PIE binary, and - // thus includes the headers. - uint64_t const offset = interpreter.phdrs[1].p_offset; - // See comment in ElfTest.ELFInterpreter. - interpreter.phdrs[1].p_flags = PF_R | PF_W | PF_X; - interpreter.phdrs[1].p_offset = 0x0; - interpreter.phdrs[1].p_vaddr = 0x0; - interpreter.phdrs[1].p_filesz += offset; - interpreter.phdrs[1].p_memsz += offset; - - TempPath interpreter_file = - ASSERT_NO_ERRNO_AND_VALUE(CreateElfWith(interpreter)); - - ElfBinary<64> binary = StandardElf(); - - // NUL-terminated path in the PT_INTERP segment. - const std::string path = interpreter_file.path(); - std::vector<char> segment(path.begin(), path.end()); - segment.push_back(0); - binary.AddInterpreter(segment); - - binary.UpdateOffsets(); - - TempPath binary_file = ASSERT_NO_ERRNO_AND_VALUE(CreateElfWith(binary)); - - ASSERT_THAT(chmod(interpreter_file.path().c_str(), 0644), SyscallSucceeds()); - - pid_t child; - int execve_errno; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(interpreter_file.path(), {interpreter_file.path()}, {}, - &child, &execve_errno)); - EXPECT_EQ(execve_errno, EACCES); -} - -// Execute a basic interpreter script. -TEST(InterpreterScriptTest, Execute) { - ElfBinary<64> elf = StandardElf(); - elf.UpdateOffsets(); - // Use /tmp explicitly to ensure the path is short enough. - TempPath binary = ASSERT_NO_ERRNO_AND_VALUE(CreateElfWith("/tmp", elf)); - - TempPath script = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), absl::StrCat("#!", binary.path()), 0755)); - - pid_t child; - int execve_errno; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(script.path(), {script.path()}, {}, &child, &execve_errno)); - ASSERT_EQ(execve_errno, 0); - - EXPECT_NO_ERRNO(WaitStopped(child)); -} - -// Whitespace after #!. -TEST(InterpreterScriptTest, Whitespace) { - ElfBinary<64> elf = StandardElf(); - elf.UpdateOffsets(); - // Use /tmp explicitly to ensure the path is short enough. - TempPath binary = ASSERT_NO_ERRNO_AND_VALUE(CreateElfWith("/tmp", elf)); - - TempPath script = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), absl::StrCat("#! \t \t", binary.path()), 0755)); - - pid_t child; - int execve_errno; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(script.path(), {script.path()}, {}, &child, &execve_errno)); - ASSERT_EQ(execve_errno, 0); - - EXPECT_NO_ERRNO(WaitStopped(child)); -} - -// Interpreter script is missing execute permission. -TEST(InterpreterScriptTest, InterpreterScriptNoExecute) { - ElfBinary<64> elf = StandardElf(); - elf.UpdateOffsets(); - // Use /tmp explicitly to ensure the path is short enough. - TempPath binary = ASSERT_NO_ERRNO_AND_VALUE(CreateElfWith("/tmp", elf)); - - TempPath script = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), absl::StrCat("#!", binary.path()), 0644)); - - pid_t child; - int execve_errno; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(script.path(), {script.path()}, {}, &child, &execve_errno)); - ASSERT_EQ(execve_errno, EACCES); -} - -// Binary interpreter script refers to is missing execute permission. -TEST(InterpreterScriptTest, BinaryNoExecute) { - ElfBinary<64> elf = StandardElf(); - elf.UpdateOffsets(); - // Use /tmp explicitly to ensure the path is short enough. - TempPath binary = ASSERT_NO_ERRNO_AND_VALUE(CreateElfWith("/tmp", elf)); - - ASSERT_THAT(chmod(binary.path().c_str(), 0644), SyscallSucceeds()); - - TempPath script = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), absl::StrCat("#!", binary.path()), 0755)); - - pid_t child; - int execve_errno; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(script.path(), {script.path()}, {}, &child, &execve_errno)); - ASSERT_EQ(execve_errno, EACCES); -} - -// Linux will load interpreter scripts five levels deep, but no more. -TEST(InterpreterScriptTest, MaxRecursion) { - ElfBinary<64> elf = StandardElf(); - elf.UpdateOffsets(); - // Use /tmp explicitly to ensure the path is short enough. - TempPath binary = ASSERT_NO_ERRNO_AND_VALUE(CreateElfWith("/tmp", elf)); - - TempPath script1 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - "/tmp", absl::StrCat("#!", binary.path()), 0755)); - TempPath script2 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - "/tmp", absl::StrCat("#!", script1.path()), 0755)); - TempPath script3 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - "/tmp", absl::StrCat("#!", script2.path()), 0755)); - TempPath script4 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - "/tmp", absl::StrCat("#!", script3.path()), 0755)); - TempPath script5 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - "/tmp", absl::StrCat("#!", script4.path()), 0755)); - TempPath script6 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - "/tmp", absl::StrCat("#!", script5.path()), 0755)); - - pid_t child; - int execve_errno; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(script6.path(), {script6.path()}, {}, &child, &execve_errno)); - // Too many levels of recursion. - EXPECT_EQ(execve_errno, ELOOP); - - // The next level up is OK. - auto cleanup2 = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(script5.path(), {script5.path()}, {}, &child, &execve_errno)); - ASSERT_EQ(execve_errno, 0); - - EXPECT_NO_ERRNO(WaitStopped(child)); -} - -// Interpreter script with a relative path. -TEST(InterpreterScriptTest, RelativePath) { - ElfBinary<64> elf = StandardElf(); - elf.UpdateOffsets(); - TempPath binary = ASSERT_NO_ERRNO_AND_VALUE(CreateElfWith("/tmp", elf)); - - auto cwd = ASSERT_NO_ERRNO_AND_VALUE(GetCWD()); - auto binary_relative = - ASSERT_NO_ERRNO_AND_VALUE(GetRelativePath(cwd, binary.path())); - - TempPath script = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), absl::StrCat("#!", binary_relative), 0755)); - - pid_t child; - int execve_errno; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(script.path(), {script.path()}, {}, &child, &execve_errno)); - ASSERT_EQ(execve_errno, 0); - - EXPECT_NO_ERRNO(WaitStopped(child)); -} - -// Interpreter script with .. in a path component. -TEST(InterpreterScriptTest, UncleanPath) { - ElfBinary<64> elf = StandardElf(); - elf.UpdateOffsets(); - // Use /tmp explicitly to ensure the path is short enough. - TempPath binary = ASSERT_NO_ERRNO_AND_VALUE(CreateElfWith("/tmp", elf)); - - TempPath script = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), absl::StrCat("#!/tmp/../", binary.path()), - 0755)); - - pid_t child; - int execve_errno; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(script.path(), {script.path()}, {}, &child, &execve_errno)); - ASSERT_EQ(execve_errno, 0); - - EXPECT_NO_ERRNO(WaitStopped(child)); -} - -// Passed interpreter script is a symlink. -TEST(InterpreterScriptTest, Symlink) { - ElfBinary<64> elf = StandardElf(); - elf.UpdateOffsets(); - // Use /tmp explicitly to ensure the path is short enough. - TempPath binary = ASSERT_NO_ERRNO_AND_VALUE(CreateElfWith("/tmp", elf)); - - TempPath script = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), absl::StrCat("#!", binary.path()), 0755)); - - TempPath link = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateSymlinkTo(GetAbsoluteTestTmpdir(), script.path())); - - pid_t child; - int execve_errno; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(link.path(), {link.path()}, {}, &child, &execve_errno)); - ASSERT_EQ(execve_errno, 0); - - EXPECT_NO_ERRNO(WaitStopped(child)); -} - -// Interpreter script points to a symlink loop. -TEST(InterpreterScriptTest, SymlinkLoop) { - std::string const link1 = NewTempAbsPathInDir("/tmp"); - std::string const link2 = NewTempAbsPathInDir("/tmp"); - - ASSERT_THAT(symlink(link2.c_str(), link1.c_str()), SyscallSucceeds()); - auto remove_link1 = Cleanup( - [&link1] { EXPECT_THAT(unlink(link1.c_str()), SyscallSucceeds()); }); - - ASSERT_THAT(symlink(link1.c_str(), link2.c_str()), SyscallSucceeds()); - auto remove_link2 = Cleanup( - [&link2] { EXPECT_THAT(unlink(link2.c_str()), SyscallSucceeds()); }); - - TempPath script = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), absl::StrCat("#!", link1), 0755)); - - pid_t child; - int execve_errno; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(script.path(), {script.path()}, {}, &child, &execve_errno)); - EXPECT_EQ(execve_errno, ELOOP); -} - -// Binary is a symlink loop. -TEST(ExecveTest, SymlinkLoop) { - std::string const link1 = NewTempAbsPathInDir("/tmp"); - std::string const link2 = NewTempAbsPathInDir("/tmp"); - - ASSERT_THAT(symlink(link2.c_str(), link1.c_str()), SyscallSucceeds()); - auto remove_link = Cleanup( - [&link1] { EXPECT_THAT(unlink(link1.c_str()), SyscallSucceeds()); }); - - ASSERT_THAT(symlink(link1.c_str(), link2.c_str()), SyscallSucceeds()); - auto remove_link2 = Cleanup( - [&link2] { EXPECT_THAT(unlink(link2.c_str()), SyscallSucceeds()); }); - - pid_t child; - int execve_errno; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(link1, {link1}, {}, &child, &execve_errno)); - EXPECT_EQ(execve_errno, ELOOP); -} - -// Binary is a directory. -TEST(ExecveTest, Directory) { - pid_t child; - int execve_errno; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec("/tmp", {"/tmp"}, {}, &child, &execve_errno)); - EXPECT_EQ(execve_errno, EACCES); -} - -// Pass a valid binary as a directory (extra / on the end). -TEST(ExecveTest, BinaryAsDirectory) { - ElfBinary<64> elf = StandardElf(); - elf.UpdateOffsets(); - TempPath file = ASSERT_NO_ERRNO_AND_VALUE(CreateElfWith(elf)); - - std::string const path = absl::StrCat(file.path(), "/"); - - pid_t child; - int execve_errno; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(path, {path}, {}, &child, &execve_errno)); - EXPECT_EQ(execve_errno, ENOTDIR); -} - -// The initial brk value is after the page at the end of the binary. -TEST(ExecveTest, BrkAfterBinary) { - ElfBinary<64> elf = StandardElf(); - elf.UpdateOffsets(); - - TempPath file = ASSERT_NO_ERRNO_AND_VALUE(CreateElfWith(elf)); - - pid_t child; - int execve_errno; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(file.path(), {file.path()}, {}, &child, &execve_errno)); - ASSERT_EQ(execve_errno, 0); - - // Ensure it made it to SIGSTOP. - ASSERT_NO_ERRNO(WaitStopped(child)); - - struct user_regs_struct regs; - ASSERT_THAT(ptrace(PTRACE_GETREGS, child, 0, ®s), SyscallSucceeds()); - - // RIP is just beyond the final syscall instruction. Rewind to execute a brk - // syscall. - regs.rip -= kSyscallSize; - regs.rax = __NR_brk; - regs.rdi = 0; - ASSERT_THAT(ptrace(PTRACE_SETREGS, child, 0, ®s), SyscallSucceeds()); - - // Resume the child, waiting for syscall entry. - ASSERT_THAT(ptrace(PTRACE_SYSCALL, child, 0, 0), SyscallSucceeds()); - int status; - ASSERT_THAT(RetryEINTR(waitpid)(child, &status, 0), - SyscallSucceedsWithValue(child)); - ASSERT_TRUE(WIFSTOPPED(status) && WSTOPSIG(status) == SIGTRAP) - << "status = " << status; - - // Execute the syscall. - ASSERT_THAT(ptrace(PTRACE_SYSCALL, child, 0, 0), SyscallSucceeds()); - ASSERT_THAT(RetryEINTR(waitpid)(child, &status, 0), - SyscallSucceedsWithValue(child)); - ASSERT_TRUE(WIFSTOPPED(status) && WSTOPSIG(status) == SIGTRAP) - << "status = " << status; - - ASSERT_THAT(ptrace(PTRACE_GETREGS, child, 0, ®s), SyscallSucceeds()); - - // brk is after the text page. - // - // The kernel does brk randomization, so we can't be sure what the exact - // address will be, but it is always beyond the final page in the binary. - // i.e., it does not start immediately after memsz in the middle of a page. - // Userspace may expect to use that space. - EXPECT_GE(regs.rax, 0x41000); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/exec_proc_exe_workload.cc b/test/syscalls/linux/exec_proc_exe_workload.cc deleted file mode 100644 index 2989379b7..000000000 --- a/test/syscalls/linux/exec_proc_exe_workload.cc +++ /dev/null @@ -1,42 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <stdlib.h> -#include <unistd.h> - -#include <iostream> - -#include "test/util/fs_util.h" -#include "test/util/posix_error.h" - -int main(int argc, char** argv, char** envp) { - // This is annoying. Because remote build systems may put these binaries - // in a content-addressable-store, you may wind up with /proc/self/exe - // pointing to some random path (but with a sensible argv[0]). - // - // Therefore, this test simply checks that the /proc/self/exe - // is absolute and *doesn't* match argv[1]. - std::string exe = - gvisor::testing::ProcessExePath(getpid()).ValueOrDie(); - if (exe[0] != '/') { - std::cerr << "relative path: " << exe << std::endl; - exit(1); - } - if (exe.find(argv[1]) != std::string::npos) { - std::cerr << "matching path: " << exe << std::endl; - exit(1); - } - - return 0; -} diff --git a/test/syscalls/linux/exec_state_workload.cc b/test/syscalls/linux/exec_state_workload.cc deleted file mode 100644 index 028902b14..000000000 --- a/test/syscalls/linux/exec_state_workload.cc +++ /dev/null @@ -1,202 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <signal.h> -#include <stdint.h> -#include <stdio.h> -#include <stdlib.h> -#include <sys/auxv.h> -#include <sys/prctl.h> -#include <sys/time.h> - -#include <iostream> -#include <ostream> -#include <string> - -#include "absl/strings/numbers.h" - -// Pretty-print a sigset_t. -std::ostream& operator<<(std::ostream& out, const sigset_t& s) { - out << "{ "; - - for (int i = 0; i < NSIG; i++) { - if (sigismember(&s, i)) { - out << i << " "; - } - } - - out << "}"; - return out; -} - -// Verify that the signo handler is handler. -int CheckSigHandler(uint32_t signo, uintptr_t handler) { - struct sigaction sa; - int ret = sigaction(signo, nullptr, &sa); - if (ret < 0) { - perror("sigaction"); - return 1; - } - - if (reinterpret_cast<void (*)(int)>(handler) != sa.sa_handler) { - std::cerr << "signo " << signo << " handler got: " << sa.sa_handler - << " expected: " << std::hex << handler; - return 1; - } - return 0; -} - -// Verify that the signo is blocked. -int CheckSigBlocked(uint32_t signo) { - sigset_t s; - int ret = sigprocmask(SIG_SETMASK, nullptr, &s); - if (ret < 0) { - perror("sigprocmask"); - return 1; - } - - if (!sigismember(&s, signo)) { - std::cerr << "signal " << signo << " not blocked in signal mask: " << s - << std::endl; - return 1; - } - return 0; -} - -// Verify that the itimer is enabled. -int CheckItimerEnabled(uint32_t timer) { - struct itimerval itv; - int ret = getitimer(timer, &itv); - if (ret < 0) { - perror("getitimer"); - return 1; - } - - if (!itv.it_value.tv_sec && !itv.it_value.tv_usec && - !itv.it_interval.tv_sec && !itv.it_interval.tv_usec) { - std::cerr << "timer " << timer - << " not enabled. value sec: " << itv.it_value.tv_sec - << " usec: " << itv.it_value.tv_usec - << " interval sec: " << itv.it_interval.tv_sec - << " usec: " << itv.it_interval.tv_usec << std::endl; - return 1; - } - return 0; -} - -int PrintExecFn() { - unsigned long execfn = getauxval(AT_EXECFN); - if (!execfn) { - std::cerr << "AT_EXECFN missing" << std::endl; - return 1; - } - - std::cerr << reinterpret_cast<const char*>(execfn) << std::endl; - return 0; -} - -int PrintExecName() { - const size_t name_length = 20; - char name[name_length] = {0}; - if (prctl(PR_GET_NAME, name) < 0) { - std::cerr << "prctl(PR_GET_NAME) failed" << std::endl; - return 1; - } - - std::cerr << name << std::endl; - return 0; -} - -void usage(const std::string& prog) { - std::cerr << "usage:\n" - << "\t" << prog << " CheckSigHandler <signo> <handler addr (hex)>\n" - << "\t" << prog << " CheckSigBlocked <signo>\n" - << "\t" << prog << " CheckTimerDisabled <timer>\n" - << "\t" << prog << " PrintExecFn\n" - << "\t" << prog << " PrintExecName" << std::endl; -} - -int main(int argc, char** argv) { - if (argc < 2) { - usage(argv[0]); - return 1; - } - - std::string func(argv[1]); - - if (func == "CheckSigHandler") { - if (argc != 4) { - usage(argv[0]); - return 1; - } - - uint32_t signo; - if (!absl::SimpleAtoi(argv[2], &signo)) { - std::cerr << "invalid signo: " << argv[2] << std::endl; - return 1; - } - - uintptr_t handler; - if (!absl::numbers_internal::safe_strtoi_base(argv[3], &handler, 16)) { - std::cerr << "invalid handler: " << std::hex << argv[3] << std::endl; - return 1; - } - - return CheckSigHandler(signo, handler); - } - - if (func == "CheckSigBlocked") { - if (argc != 3) { - usage(argv[0]); - return 1; - } - - uint32_t signo; - if (!absl::SimpleAtoi(argv[2], &signo)) { - std::cerr << "invalid signo: " << argv[2] << std::endl; - return 1; - } - - return CheckSigBlocked(signo); - } - - if (func == "CheckItimerEnabled") { - if (argc != 3) { - usage(argv[0]); - return 1; - } - - uint32_t timer; - if (!absl::SimpleAtoi(argv[2], &timer)) { - std::cerr << "invalid signo: " << argv[2] << std::endl; - return 1; - } - - return CheckItimerEnabled(timer); - } - - if (func == "PrintExecFn") { - // N.B. This will be called as an interpreter script, with the script passed - // as the third argument. We don't care about that script. - return PrintExecFn(); - } - - if (func == "PrintExecName") { - // N.B. This may be called as an interpreter script like PrintExecFn. - return PrintExecName(); - } - - std::cerr << "Invalid function: " << func << std::endl; - return 1; -} diff --git a/test/syscalls/linux/exit.cc b/test/syscalls/linux/exit.cc deleted file mode 100644 index d52ea786b..000000000 --- a/test/syscalls/linux/exit.cc +++ /dev/null @@ -1,78 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <sys/wait.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "absl/time/time.h" -#include "test/util/file_descriptor.h" -#include "test/util/test_util.h" -#include "test/util/time_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -void TestExit(int code) { - pid_t pid = fork(); - if (pid == 0) { - _exit(code); - } - - ASSERT_THAT(pid, SyscallSucceeds()); - - int status; - EXPECT_THAT(RetryEINTR(waitpid)(pid, &status, 0), SyscallSucceeds()); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == code) << status; -} - -TEST(ExitTest, Success) { TestExit(0); } - -TEST(ExitTest, Failure) { TestExit(1); } - -// This test ensures that a process's file descriptors are closed when it calls -// exit(). In order to test this, the parent tries to read from a pipe whose -// write end is held by the child. While the read is blocking, the child exits, -// which should cause the parent to read 0 bytes due to EOF. -TEST(ExitTest, CloseFds) { - int pipe_fds[2]; - ASSERT_THAT(pipe(pipe_fds), SyscallSucceeds()); - - FileDescriptor read_fd(pipe_fds[0]); - FileDescriptor write_fd(pipe_fds[1]); - - pid_t pid = fork(); - if (pid == 0) { - read_fd.reset(); - - SleepSafe(absl::Seconds(10)); - - _exit(0); - } - - EXPECT_THAT(pid, SyscallSucceeds()); - - write_fd.reset(); - - char buf[10]; - EXPECT_THAT(ReadFd(read_fd.get(), buf, sizeof(buf)), - SyscallSucceedsWithValue(0)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/exit_script.sh b/test/syscalls/linux/exit_script.sh deleted file mode 100755 index 527518e06..000000000 --- a/test/syscalls/linux/exit_script.sh +++ /dev/null @@ -1,22 +0,0 @@ -#!/bin/bash - -# Copyright 2018 The gVisor Authors. -# -# Licensed under the Apache License, Version 2.0 (the "License"); -# you may not use this file except in compliance with the License. -# You may obtain a copy of the License at -# -# http://www.apache.org/licenses/LICENSE-2.0 -# -# Unless required by applicable law or agreed to in writing, software -# distributed under the License is distributed on an "AS IS" BASIS, -# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -# See the License for the specific language governing permissions and -# limitations under the License. - -if [ $# -ne 1 ]; then - echo "Usage: $0 exit_code" - exit 255 -fi - -exit $1 diff --git a/test/syscalls/linux/fadvise64.cc b/test/syscalls/linux/fadvise64.cc deleted file mode 100644 index 2af7aa6d9..000000000 --- a/test/syscalls/linux/fadvise64.cc +++ /dev/null @@ -1,72 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <syscall.h> -#include <unistd.h> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "test/util/file_descriptor.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -TEST(FAdvise64Test, Basic) { - auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const auto fd = ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDONLY)); - - // fadvise64 is noop in gVisor, so just test that it succeeds. - ASSERT_THAT(syscall(__NR_fadvise64, fd.get(), 0, 10, POSIX_FADV_NORMAL), - SyscallSucceeds()); - ASSERT_THAT(syscall(__NR_fadvise64, fd.get(), 0, 10, POSIX_FADV_RANDOM), - SyscallSucceeds()); - ASSERT_THAT(syscall(__NR_fadvise64, fd.get(), 0, 10, POSIX_FADV_SEQUENTIAL), - SyscallSucceeds()); - ASSERT_THAT(syscall(__NR_fadvise64, fd.get(), 0, 10, POSIX_FADV_WILLNEED), - SyscallSucceeds()); - ASSERT_THAT(syscall(__NR_fadvise64, fd.get(), 0, 10, POSIX_FADV_DONTNEED), - SyscallSucceeds()); - ASSERT_THAT(syscall(__NR_fadvise64, fd.get(), 0, 10, POSIX_FADV_NOREUSE), - SyscallSucceeds()); -} - -TEST(FAdvise64Test, InvalidArgs) { - auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const auto fd = ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDONLY)); - - // Note: offset is allowed to be negative. - ASSERT_THAT(syscall(__NR_fadvise64, fd.get(), 0, static_cast<off_t>(-1), - POSIX_FADV_NORMAL), - SyscallFailsWithErrno(EINVAL)); - ASSERT_THAT(syscall(__NR_fadvise64, fd.get(), 0, 10, 12345), - SyscallFailsWithErrno(EINVAL)); -} - -TEST(FAdvise64Test, NoPipes) { - int fds[2]; - ASSERT_THAT(pipe(fds), SyscallSucceeds()); - const FileDescriptor read(fds[0]); - const FileDescriptor write(fds[1]); - - ASSERT_THAT(syscall(__NR_fadvise64, read.get(), 0, 10, POSIX_FADV_NORMAL), - SyscallFailsWithErrno(ESPIPE)); -} - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/fallocate.cc b/test/syscalls/linux/fallocate.cc deleted file mode 100644 index 1c3d00287..000000000 --- a/test/syscalls/linux/fallocate.cc +++ /dev/null @@ -1,141 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <fcntl.h> -#include <signal.h> -#include <sys/resource.h> -#include <sys/stat.h> -#include <syscall.h> -#include <time.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "test/syscalls/linux/file_base.h" -#include "test/util/cleanup.h" -#include "test/util/file_descriptor.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -int fallocate(int fd, int mode, off_t offset, off_t len) { - return syscall(__NR_fallocate, fd, mode, offset, len); -} - -class AllocateTest : public FileTest { - void SetUp() override { FileTest::SetUp(); } -}; - -TEST_F(AllocateTest, Fallocate) { - // Check that it starts at size zero. - struct stat buf; - ASSERT_THAT(fstat(test_file_fd_.get(), &buf), SyscallSucceeds()); - EXPECT_EQ(buf.st_size, 0); - - // Grow to ten bytes. - EXPECT_THAT(fallocate(test_file_fd_.get(), 0, 0, 10), SyscallSucceeds()); - ASSERT_THAT(fstat(test_file_fd_.get(), &buf), SyscallSucceeds()); - EXPECT_EQ(buf.st_size, 10); - - // Allocate to a smaller size should be noop. - EXPECT_THAT(fallocate(test_file_fd_.get(), 0, 0, 5), SyscallSucceeds()); - ASSERT_THAT(fstat(test_file_fd_.get(), &buf), SyscallSucceeds()); - EXPECT_EQ(buf.st_size, 10); - - // Grow again. - EXPECT_THAT(fallocate(test_file_fd_.get(), 0, 0, 20), SyscallSucceeds()); - ASSERT_THAT(fstat(test_file_fd_.get(), &buf), SyscallSucceeds()); - EXPECT_EQ(buf.st_size, 20); - - // Grow with offset. - EXPECT_THAT(fallocate(test_file_fd_.get(), 0, 10, 20), SyscallSucceeds()); - ASSERT_THAT(fstat(test_file_fd_.get(), &buf), SyscallSucceeds()); - EXPECT_EQ(buf.st_size, 30); - - // Grow with offset beyond EOF. - EXPECT_THAT(fallocate(test_file_fd_.get(), 0, 39, 1), SyscallSucceeds()); - ASSERT_THAT(fstat(test_file_fd_.get(), &buf), SyscallSucceeds()); - EXPECT_EQ(buf.st_size, 40); -} - -TEST_F(AllocateTest, FallocateInvalid) { - // Invalid FD - EXPECT_THAT(fallocate(-1, 0, 0, 10), SyscallFailsWithErrno(EBADF)); - - // Negative offset and size. - EXPECT_THAT(fallocate(test_file_fd_.get(), 0, -1, 10), - SyscallFailsWithErrno(EINVAL)); - EXPECT_THAT(fallocate(test_file_fd_.get(), 0, 0, -1), - SyscallFailsWithErrno(EINVAL)); - EXPECT_THAT(fallocate(test_file_fd_.get(), 0, -1, -1), - SyscallFailsWithErrno(EINVAL)); -} - -TEST_F(AllocateTest, FallocateReadonly) { - auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDONLY)); - EXPECT_THAT(fallocate(fd.get(), 0, 0, 10), SyscallFailsWithErrno(EBADF)); -} - -TEST_F(AllocateTest, FallocatePipe) { - int pipes[2]; - EXPECT_THAT(pipe(pipes), SyscallSucceeds()); - auto cleanup = Cleanup([&pipes] { - EXPECT_THAT(close(pipes[0]), SyscallSucceeds()); - EXPECT_THAT(close(pipes[1]), SyscallSucceeds()); - }); - - EXPECT_THAT(fallocate(pipes[1], 0, 0, 10), SyscallFailsWithErrno(ESPIPE)); -} - -TEST_F(AllocateTest, FallocateChar) { - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/null", O_RDWR)); - EXPECT_THAT(fallocate(fd.get(), 0, 0, 10), SyscallFailsWithErrno(ENODEV)); -} - -TEST_F(AllocateTest, FallocateRlimit) { - // Get the current rlimit and restore after test run. - struct rlimit initial_lim; - ASSERT_THAT(getrlimit(RLIMIT_FSIZE, &initial_lim), SyscallSucceeds()); - auto cleanup = Cleanup([&initial_lim] { - EXPECT_THAT(setrlimit(RLIMIT_FSIZE, &initial_lim), SyscallSucceeds()); - }); - - // Try growing past the file size limit. - sigset_t new_mask; - sigemptyset(&new_mask); - sigaddset(&new_mask, SIGXFSZ); - sigprocmask(SIG_BLOCK, &new_mask, nullptr); - - struct rlimit setlim = {}; - setlim.rlim_cur = 1024; - setlim.rlim_max = RLIM_INFINITY; - ASSERT_THAT(setrlimit(RLIMIT_FSIZE, &setlim), SyscallSucceeds()); - - EXPECT_THAT(fallocate(test_file_fd_.get(), 0, 0, 1025), - SyscallFailsWithErrno(EFBIG)); - - struct timespec timelimit = {}; - timelimit.tv_sec = 10; - EXPECT_EQ(sigtimedwait(&new_mask, nullptr, &timelimit), SIGXFSZ); - ASSERT_THAT(sigprocmask(SIG_UNBLOCK, &new_mask, nullptr), SyscallSucceeds()); -} - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/fault.cc b/test/syscalls/linux/fault.cc deleted file mode 100644 index a85750382..000000000 --- a/test/syscalls/linux/fault.cc +++ /dev/null @@ -1,74 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#define _GNU_SOURCE 1 -#include <signal.h> -#include <ucontext.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -__attribute__((noinline)) void Fault(void) { - volatile int* foo = nullptr; - *foo = 0; -} - -int GetPcFromUcontext(ucontext_t* uc, uintptr_t* pc) { -#if defined(__x86_64__) - *pc = uc->uc_mcontext.gregs[REG_RIP]; - return 1; -#elif defined(__i386__) - *pc = uc->uc_mcontext.gregs[REG_EIP]; - return 1; -#elif defined(__aarch64__) - *pc = uc->uc_mcontext.pc; - return 1; -#else - return 0; -#endif -} - -void sigact_handler(int sig, siginfo_t* siginfo, void* context) { - uintptr_t pc; - if (GetPcFromUcontext(reinterpret_cast<ucontext_t*>(context), &pc)) { - /* Expect Fault() to be at most 64 bytes in size. */ - uintptr_t fault_addr = reinterpret_cast<uintptr_t>(&Fault); - EXPECT_GE(pc, fault_addr); - EXPECT_LT(pc, fault_addr + 64); - exit(0); - } -} - -TEST(FaultTest, InRange) { - // Reset the signal handler to do nothing so that it doesn't freak out - // the test runner when we fire an alarm. - struct sigaction sa = {}; - sa.sa_sigaction = sigact_handler; - sigfillset(&sa.sa_mask); - sa.sa_flags = SA_SIGINFO; - ASSERT_THAT(sigaction(SIGSEGV, &sa, nullptr), SyscallSucceeds()); - - Fault(); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/fchdir.cc b/test/syscalls/linux/fchdir.cc deleted file mode 100644 index 08bcae1e8..000000000 --- a/test/syscalls/linux/fchdir.cc +++ /dev/null @@ -1,77 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <fcntl.h> -#include <sys/socket.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <sys/un.h> - -#include "gtest/gtest.h" -#include "test/util/capability_util.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -TEST(FchdirTest, Success) { - auto temp_dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - int fd; - ASSERT_THAT(fd = open(temp_dir.path().c_str(), O_DIRECTORY | O_RDONLY), - SyscallSucceeds()); - - EXPECT_THAT(fchdir(fd), SyscallSucceeds()); - EXPECT_THAT(close(fd), SyscallSucceeds()); - // Change CWD to a permanent location as temp dirs will be cleaned up. - EXPECT_THAT(chdir("/"), SyscallSucceeds()); -} - -TEST(FchdirTest, InvalidFD) { - EXPECT_THAT(fchdir(-1), SyscallFailsWithErrno(EBADF)); -} - -TEST(FchdirTest, PermissionDenied) { - // Drop capabilities that allow us to override directory permissions. - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_READ_SEARCH, false)); - - auto temp_dir = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateDirWith(GetAbsoluteTestTmpdir(), 0666 /* mode */)); - - int fd; - ASSERT_THAT(fd = open(temp_dir.path().c_str(), O_DIRECTORY | O_RDONLY), - SyscallSucceeds()); - - EXPECT_THAT(fchdir(fd), SyscallFailsWithErrno(EACCES)); - EXPECT_THAT(close(fd), SyscallSucceeds()); -} - -TEST(FchdirTest, NotDir) { - auto temp_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - - int fd; - ASSERT_THAT(fd = open(temp_file.path().c_str(), O_CREAT | O_RDONLY, 0777), - SyscallSucceeds()); - - EXPECT_THAT(fchdir(fd), SyscallFailsWithErrno(ENOTDIR)); - EXPECT_THAT(close(fd), SyscallSucceeds()); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/fcntl.cc b/test/syscalls/linux/fcntl.cc deleted file mode 100644 index 421c15b87..000000000 --- a/test/syscalls/linux/fcntl.cc +++ /dev/null @@ -1,1132 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <fcntl.h> -#include <signal.h> -#include <sys/types.h> -#include <syscall.h> -#include <unistd.h> - -#include <string> - -#include "gtest/gtest.h" -#include "absl/base/macros.h" -#include "absl/base/port.h" -#include "absl/flags/flag.h" -#include "absl/memory/memory.h" -#include "absl/strings/str_cat.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/util/cleanup.h" -#include "test/util/eventfd_util.h" -#include "test/util/fs_util.h" -#include "test/util/multiprocess_util.h" -#include "test/util/posix_error.h" -#include "test/util/save_util.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" -#include "test/util/timer_util.h" - -ABSL_FLAG(std::string, child_setlock_on, "", - "Contains the path to try to set a file lock on."); -ABSL_FLAG(bool, child_setlock_write, false, - "Whether to set a writable lock (otherwise readable)"); -ABSL_FLAG(bool, blocking, false, - "Whether to set a blocking lock (otherwise non-blocking)."); -ABSL_FLAG(bool, retry_eintr, false, - "Whether to retry in the subprocess on EINTR."); -ABSL_FLAG(uint64_t, child_setlock_start, 0, "The value of struct flock start"); -ABSL_FLAG(uint64_t, child_setlock_len, 0, "The value of struct flock len"); -ABSL_FLAG(int32_t, socket_fd, -1, - "A socket to use for communicating more state back " - "to the parent."); - -namespace gvisor { -namespace testing { - -class FcntlLockTest : public ::testing::Test { - public: - void SetUp() override { - // Let's make a socket pair. - ASSERT_THAT(socketpair(AF_UNIX, SOCK_STREAM, 0, fds_), SyscallSucceeds()); - } - - void TearDown() override { - EXPECT_THAT(close(fds_[0]), SyscallSucceeds()); - EXPECT_THAT(close(fds_[1]), SyscallSucceeds()); - } - - int64_t GetSubprocessFcntlTimeInUsec() { - int64_t ret = 0; - EXPECT_THAT(ReadFd(fds_[0], reinterpret_cast<void*>(&ret), sizeof(ret)), - SyscallSucceedsWithValue(sizeof(ret))); - return ret; - } - - // The first fd will remain with the process creating the subprocess - // and the second will go to the subprocess. - int fds_[2] = {}; -}; - -namespace { - -PosixErrorOr<Cleanup> SubprocessLock(std::string const& path, bool for_write, - bool blocking, bool retry_eintr, int fd, - off_t start, off_t length, pid_t* child) { - std::vector<std::string> args = { - "/proc/self/exe", "--child_setlock_on", path, - "--child_setlock_start", absl::StrCat(start), "--child_setlock_len", - absl::StrCat(length), "--socket_fd", absl::StrCat(fd)}; - - if (for_write) { - args.push_back("--child_setlock_write"); - } - - if (blocking) { - args.push_back("--blocking"); - } - - if (retry_eintr) { - args.push_back("--retry_eintr"); - } - - int execve_errno = 0; - ASSIGN_OR_RETURN_ERRNO( - auto cleanup, - ForkAndExec("/proc/self/exe", ExecveArray(args.begin(), args.end()), {}, - nullptr, child, &execve_errno)); - - if (execve_errno != 0) { - return PosixError(execve_errno, "execve"); - } - - return std::move(cleanup); -} - -TEST(FcntlTest, SetCloExec) { - // Open an eventfd file descriptor with FD_CLOEXEC descriptor flag not set. - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(NewEventFD(0, 0)); - ASSERT_THAT(fcntl(fd.get(), F_GETFD), SyscallSucceedsWithValue(0)); - - // Set the FD_CLOEXEC flag. - ASSERT_THAT(fcntl(fd.get(), F_SETFD, FD_CLOEXEC), SyscallSucceeds()); - ASSERT_THAT(fcntl(fd.get(), F_GETFD), SyscallSucceedsWithValue(FD_CLOEXEC)); -} - -TEST(FcntlTest, ClearCloExec) { - // Open an eventfd file descriptor with FD_CLOEXEC descriptor flag set. - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(NewEventFD(0, EFD_CLOEXEC)); - ASSERT_THAT(fcntl(fd.get(), F_GETFD), SyscallSucceedsWithValue(FD_CLOEXEC)); - - // Clear the FD_CLOEXEC flag. - ASSERT_THAT(fcntl(fd.get(), F_SETFD, 0), SyscallSucceeds()); - ASSERT_THAT(fcntl(fd.get(), F_GETFD), SyscallSucceedsWithValue(0)); -} - -TEST(FcntlTest, IndependentDescriptorFlags) { - // Open an eventfd file descriptor with FD_CLOEXEC descriptor flag not set. - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(NewEventFD(0, 0)); - ASSERT_THAT(fcntl(fd.get(), F_GETFD), SyscallSucceedsWithValue(0)); - - // Duplicate the descriptor. Ensure that it also doesn't have FD_CLOEXEC. - FileDescriptor newfd = ASSERT_NO_ERRNO_AND_VALUE(fd.Dup()); - ASSERT_THAT(fcntl(newfd.get(), F_GETFD), SyscallSucceedsWithValue(0)); - - // Set FD_CLOEXEC on the first FD. - ASSERT_THAT(fcntl(fd.get(), F_SETFD, FD_CLOEXEC), SyscallSucceeds()); - ASSERT_THAT(fcntl(fd.get(), F_GETFD), SyscallSucceedsWithValue(FD_CLOEXEC)); - - // Ensure that the second FD is unaffected by the change on the first. - ASSERT_THAT(fcntl(newfd.get(), F_GETFD), SyscallSucceedsWithValue(0)); -} - -// All file description flags passed to open appear in F_GETFL. -TEST(FcntlTest, GetAllFlags) { - TempPath path = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - int flags = O_RDWR | O_DIRECT | O_SYNC | O_NONBLOCK | O_APPEND; - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(path.path(), flags)); - - // Linux forces O_LARGEFILE on all 64-bit kernels and gVisor's is 64-bit. - int expected = flags | kOLargeFile; - - int rflags; - EXPECT_THAT(rflags = fcntl(fd.get(), F_GETFL), SyscallSucceeds()); - EXPECT_EQ(rflags, expected); -} - -TEST(FcntlTest, SetFlags) { - TempPath path = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(path.path(), 0)); - - int const flags = O_RDWR | O_DIRECT | O_SYNC | O_NONBLOCK | O_APPEND; - EXPECT_THAT(fcntl(fd.get(), F_SETFL, flags), SyscallSucceeds()); - - // Can't set O_RDWR or O_SYNC. - // Linux forces O_LARGEFILE on all 64-bit kernels and gVisor's is 64-bit. - int expected = O_DIRECT | O_NONBLOCK | O_APPEND | kOLargeFile; - - int rflags; - EXPECT_THAT(rflags = fcntl(fd.get(), F_GETFL), SyscallSucceeds()); - EXPECT_EQ(rflags, expected); -} - -TEST_F(FcntlLockTest, SetLockBadFd) { - struct flock fl; - fl.l_type = F_WRLCK; - fl.l_whence = SEEK_SET; - fl.l_start = 0; - // len 0 has a special meaning: lock all bytes despite how - // large the file grows. - fl.l_len = 0; - EXPECT_THAT(fcntl(-1, F_SETLK, &fl), SyscallFailsWithErrno(EBADF)); -} - -TEST_F(FcntlLockTest, SetLockPipe) { - int fds[2]; - ASSERT_THAT(pipe(fds), SyscallSucceeds()); - - struct flock fl; - fl.l_type = F_WRLCK; - fl.l_whence = SEEK_SET; - fl.l_start = 0; - // Same as SetLockBadFd, but doesn't matter, we expect this to fail. - fl.l_len = 0; - EXPECT_THAT(fcntl(fds[0], F_SETLK, &fl), SyscallFailsWithErrno(EBADF)); - EXPECT_THAT(close(fds[0]), SyscallSucceeds()); - EXPECT_THAT(close(fds[1]), SyscallSucceeds()); -} - -TEST_F(FcntlLockTest, SetLockDir) { - auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(dir.path(), O_RDONLY, 0666)); - - struct flock fl; - fl.l_type = F_RDLCK; - fl.l_whence = SEEK_SET; - fl.l_start = 0; - // Same as SetLockBadFd. - fl.l_len = 0; - - EXPECT_THAT(fcntl(fd.get(), F_SETLK, &fl), SyscallSucceeds()); -} - -TEST_F(FcntlLockTest, SetLockBadOpenFlagsWrite) { - auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDONLY, 0666)); - - struct flock fl0; - fl0.l_type = F_WRLCK; - fl0.l_whence = SEEK_SET; - fl0.l_start = 0; - // Same as SetLockBadFd. - fl0.l_len = 0; - - // Expect that setting a write lock using a read only file descriptor - // won't work. - EXPECT_THAT(fcntl(fd.get(), F_SETLK, &fl0), SyscallFailsWithErrno(EBADF)); -} - -TEST_F(FcntlLockTest, SetLockBadOpenFlagsRead) { - auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_WRONLY, 0666)); - - struct flock fl1; - fl1.l_type = F_RDLCK; - fl1.l_whence = SEEK_SET; - fl1.l_start = 0; - // Same as SetLockBadFd. - fl1.l_len = 0; - - EXPECT_THAT(fcntl(fd.get(), F_SETLK, &fl1), SyscallFailsWithErrno(EBADF)); -} - -TEST_F(FcntlLockTest, SetLockUnlockOnNothing) { - auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR, 0666)); - - struct flock fl; - fl.l_type = F_UNLCK; - fl.l_whence = SEEK_SET; - fl.l_start = 0; - // Same as SetLockBadFd. - fl.l_len = 0; - - EXPECT_THAT(fcntl(fd.get(), F_SETLK, &fl), SyscallSucceeds()); -} - -TEST_F(FcntlLockTest, SetWriteLockSingleProc) { - auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - FileDescriptor fd0 = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR, 0666)); - - struct flock fl; - fl.l_type = F_WRLCK; - fl.l_whence = SEEK_SET; - fl.l_start = 0; - // Same as SetLockBadFd. - fl.l_len = 0; - - EXPECT_THAT(fcntl(fd0.get(), F_SETLK, &fl), SyscallSucceeds()); - // Expect to be able to take the same lock on the same fd no problem. - EXPECT_THAT(fcntl(fd0.get(), F_SETLK, &fl), SyscallSucceeds()); - - FileDescriptor fd1 = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR, 0666)); - - // Expect to be able to take the same lock from a different fd but for - // the same process. - EXPECT_THAT(fcntl(fd1.get(), F_SETLK, &fl), SyscallSucceeds()); -} - -TEST_F(FcntlLockTest, SetReadLockMultiProc) { - auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR, 0666)); - - struct flock fl; - fl.l_type = F_RDLCK; - fl.l_whence = SEEK_SET; - fl.l_start = 0; - // Same as SetLockBadFd. - fl.l_len = 0; - EXPECT_THAT(fcntl(fd.get(), F_SETLK, &fl), SyscallSucceeds()); - - // spawn a child process to take a read lock on the same file. - pid_t child_pid = 0; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - SubprocessLock(file.path(), false /* write lock */, - false /* nonblocking */, false /* no eintr retry */, - -1 /* no socket fd */, fl.l_start, fl.l_len, &child_pid)); - - int status = 0; - ASSERT_THAT(RetryEINTR(waitpid)(child_pid, &status, 0), SyscallSucceeds()); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << "Exited with code: " << status; -} - -TEST_F(FcntlLockTest, SetReadThenWriteLockMultiProc) { - auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR, 0666)); - - struct flock fl; - fl.l_type = F_RDLCK; - fl.l_whence = SEEK_SET; - fl.l_start = 0; - // Same as SetLockBadFd. - fl.l_len = 0; - EXPECT_THAT(fcntl(fd.get(), F_SETLK, &fl), SyscallSucceeds()); - - // Assert that another process trying to lock on the same file will fail - // with EAGAIN. It's important that we keep the fd above open so that - // that the other process will contend with the lock. - pid_t child_pid = 0; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - SubprocessLock(file.path(), true /* write lock */, - false /* nonblocking */, false /* no eintr retry */, - -1 /* no socket fd */, fl.l_start, fl.l_len, &child_pid)); - - int status = 0; - ASSERT_THAT(RetryEINTR(waitpid)(child_pid, &status, 0), SyscallSucceeds()); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == EAGAIN) - << "Exited with code: " << status; - - // Close the fd: we want to test that another process can acquire the - // lock after this point. - fd.reset(); - // Assert that another process can now acquire the lock. - - child_pid = 0; - auto cleanup2 = ASSERT_NO_ERRNO_AND_VALUE( - SubprocessLock(file.path(), true /* write lock */, - false /* nonblocking */, false /* no eintr retry */, - -1 /* no socket fd */, fl.l_start, fl.l_len, &child_pid)); - ASSERT_THAT(RetryEINTR(waitpid)(child_pid, &status, 0), SyscallSucceeds()); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << "Exited with code: " << status; -} - -TEST_F(FcntlLockTest, SetWriteThenReadLockMultiProc) { - auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR, 0666)); - // Same as SetReadThenWriteLockMultiProc. - - struct flock fl; - fl.l_type = F_WRLCK; - fl.l_whence = SEEK_SET; - fl.l_start = 0; - // Same as SetLockBadFd. - fl.l_len = 0; - - // Same as SetReadThenWriteLockMultiProc. - EXPECT_THAT(fcntl(fd.get(), F_SETLK, &fl), SyscallSucceeds()); - - // Same as SetReadThenWriteLockMultiProc. - pid_t child_pid = 0; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - SubprocessLock(file.path(), false /* write lock */, - false /* nonblocking */, false /* no eintr retry */, - -1 /* no socket fd */, fl.l_start, fl.l_len, &child_pid)); - - int status = 0; - ASSERT_THAT(RetryEINTR(waitpid)(child_pid, &status, 0), SyscallSucceeds()); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == EAGAIN) - << "Exited with code: " << status; - - // Same as SetReadThenWriteLockMultiProc. - fd.reset(); // Close the fd. - - // Same as SetReadThenWriteLockMultiProc. - child_pid = 0; - auto cleanup2 = ASSERT_NO_ERRNO_AND_VALUE( - SubprocessLock(file.path(), false /* write lock */, - false /* nonblocking */, false /* no eintr retry */, - -1 /* no socket fd */, fl.l_start, fl.l_len, &child_pid)); - ASSERT_THAT(RetryEINTR(waitpid)(child_pid, &status, 0), SyscallSucceeds()); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << "Exited with code: " << status; -} - -TEST_F(FcntlLockTest, SetWriteLockMultiProc) { - auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR, 0666)); - // Same as SetReadThenWriteLockMultiProc. - - struct flock fl; - fl.l_type = F_WRLCK; - fl.l_whence = SEEK_SET; - fl.l_start = 0; - // Same as SetLockBadFd. - fl.l_len = 0; - - // Same as SetReadWriteLockMultiProc. - EXPECT_THAT(fcntl(fd.get(), F_SETLK, &fl), SyscallSucceeds()); - - // Same as SetReadWriteLockMultiProc. - pid_t child_pid = 0; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - SubprocessLock(file.path(), true /* write lock */, - false /* nonblocking */, false /* no eintr retry */, - -1 /* no socket fd */, fl.l_start, fl.l_len, &child_pid)); - int status = 0; - ASSERT_THAT(RetryEINTR(waitpid)(child_pid, &status, 0), SyscallSucceeds()); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == EAGAIN) - << "Exited with code: " << status; - - fd.reset(); // Close the FD. - // Same as SetReadWriteLockMultiProc. - child_pid = 0; - auto cleanup2 = ASSERT_NO_ERRNO_AND_VALUE( - SubprocessLock(file.path(), true /* write lock */, - false /* nonblocking */, false /* no eintr retry */, - -1 /* no socket fd */, fl.l_start, fl.l_len, &child_pid)); - ASSERT_THAT(RetryEINTR(waitpid)(child_pid, &status, 0), SyscallSucceeds()); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << "Exited with code: " << status; -} - -TEST_F(FcntlLockTest, SetLockIsRegional) { - auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR, 0666)); - - struct flock fl; - fl.l_type = F_WRLCK; - fl.l_whence = SEEK_SET; - fl.l_start = 0; - fl.l_len = 4096; - - // Same as SetReadWriteLockMultiProc. - EXPECT_THAT(fcntl(fd.get(), F_SETLK, &fl), SyscallSucceeds()); - - // Same as SetReadWriteLockMultiProc. - pid_t child_pid = 0; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - SubprocessLock(file.path(), true /* write lock */, - false /* nonblocking */, false /* no eintr retry */, - -1 /* no socket fd */, fl.l_len, 0, &child_pid)); - int status = 0; - ASSERT_THAT(RetryEINTR(waitpid)(child_pid, &status, 0), SyscallSucceeds()); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << "Exited with code: " << status; -} - -TEST_F(FcntlLockTest, SetLockUpgradeDowngrade) { - auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR, 0666)); - - struct flock fl; - fl.l_type = F_RDLCK; - fl.l_whence = SEEK_SET; - fl.l_start = 0; - // Same as SetLockBadFd. - fl.l_len = 0; - - // Same as SetReadWriteLockMultiProc. - EXPECT_THAT(fcntl(fd.get(), F_SETLK, &fl), SyscallSucceeds()); - - // Upgrade to a write lock. This will prevent anyone else from taking - // the lock. - fl.l_type = F_WRLCK; - EXPECT_THAT(fcntl(fd.get(), F_SETLK, &fl), SyscallSucceeds()); - - // Same as SetReadWriteLockMultiProc., - pid_t child_pid = 0; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - SubprocessLock(file.path(), false /* write lock */, - false /* nonblocking */, false /* no eintr retry */, - -1 /* no socket fd */, fl.l_start, fl.l_len, &child_pid)); - - int status = 0; - ASSERT_THAT(RetryEINTR(waitpid)(child_pid, &status, 0), SyscallSucceeds()); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == EAGAIN) - << "Exited with code: " << status; - - // Downgrade back to a read lock. - fl.l_type = F_RDLCK; - EXPECT_THAT(fcntl(fd.get(), F_SETLK, &fl), SyscallSucceeds()); - - // Do the same stint as before, but this time it should succeed. - child_pid = 0; - auto cleanup2 = ASSERT_NO_ERRNO_AND_VALUE( - SubprocessLock(file.path(), false /* write lock */, - false /* nonblocking */, false /* no eintr retry */, - -1 /* no socket fd */, fl.l_start, fl.l_len, &child_pid)); - - ASSERT_THAT(RetryEINTR(waitpid)(child_pid, &status, 0), SyscallSucceeds()); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << "Exited with code: " << status; -} - -TEST_F(FcntlLockTest, SetLockDroppedOnClose) { - auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR, 0666)); - - // While somewhat surprising, obtaining another fd to the same file and - // then closing it in this process drops *all* locks. - FileDescriptor other_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR, 0666)); - // Same as SetReadThenWriteLockMultiProc. - - struct flock fl; - fl.l_type = F_WRLCK; - fl.l_whence = SEEK_SET; - fl.l_start = 0; - // Same as SetLockBadFd. - fl.l_len = 0; - - // Same as SetReadWriteLockMultiProc. - EXPECT_THAT(fcntl(fd.get(), F_SETLK, &fl), SyscallSucceeds()); - - other_fd.reset(); // Close. - - // Expect to be able to get the lock, given that the close above dropped it. - pid_t child_pid = 0; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - SubprocessLock(file.path(), true /* write lock */, - false /* nonblocking */, false /* no eintr retry */, - -1 /* no socket fd */, fl.l_start, fl.l_len, &child_pid)); - - int status = 0; - ASSERT_THAT(RetryEINTR(waitpid)(child_pid, &status, 0), SyscallSucceeds()); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << "Exited with code: " << status; -} - -TEST_F(FcntlLockTest, SetLockUnlock) { - auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR, 0666)); - - // Setup two regional locks with different permissions. - struct flock fl0; - fl0.l_type = F_WRLCK; - fl0.l_whence = SEEK_SET; - fl0.l_start = 0; - fl0.l_len = 4096; - - struct flock fl1; - fl1.l_type = F_RDLCK; - fl1.l_whence = SEEK_SET; - fl1.l_start = 4096; - // Same as SetLockBadFd. - fl1.l_len = 0; - - // Set both region locks. - EXPECT_THAT(fcntl(fd.get(), F_SETLK, &fl0), SyscallSucceeds()); - EXPECT_THAT(fcntl(fd.get(), F_SETLK, &fl1), SyscallSucceeds()); - - // Another process should fail to take a read lock on the entire file - // due to the regional write lock. - pid_t child_pid = 0; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE(SubprocessLock( - file.path(), false /* write lock */, false /* nonblocking */, - false /* no eintr retry */, -1 /* no socket fd */, 0, 0, &child_pid)); - - int status = 0; - ASSERT_THAT(RetryEINTR(waitpid)(child_pid, &status, 0), SyscallSucceeds()); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == EAGAIN) - << "Exited with code: " << status; - - // Then only unlock the writable one. This should ensure that other - // processes can take any read lock that it wants. - fl0.l_type = F_UNLCK; - EXPECT_THAT(fcntl(fd.get(), F_SETLK, &fl0), SyscallSucceeds()); - - // Another process should now succeed to get a read lock on the entire file. - child_pid = 0; - auto cleanup2 = ASSERT_NO_ERRNO_AND_VALUE(SubprocessLock( - file.path(), false /* write lock */, false /* nonblocking */, - false /* no eintr retry */, -1 /* no socket fd */, 0, 0, &child_pid)); - ASSERT_THAT(RetryEINTR(waitpid)(child_pid, &status, 0), SyscallSucceeds()); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << "Exited with code: " << status; -} - -TEST_F(FcntlLockTest, SetLockAcrossRename) { - auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR, 0666)); - - // Setup two regional locks with different permissions. - struct flock fl; - fl.l_type = F_WRLCK; - fl.l_whence = SEEK_SET; - fl.l_start = 0; - // Same as SetLockBadFd. - fl.l_len = 0; - - // Set the region lock. - EXPECT_THAT(fcntl(fd.get(), F_SETLK, &fl), SyscallSucceeds()); - - // Rename the file to someplace nearby. - std::string const newpath = NewTempAbsPath(); - EXPECT_THAT(rename(file.path().c_str(), newpath.c_str()), SyscallSucceeds()); - - // Another process should fail to take a read lock on the renamed file - // since we still have an open handle to the inode. - pid_t child_pid = 0; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - SubprocessLock(newpath, false /* write lock */, false /* nonblocking */, - false /* no eintr retry */, -1 /* no socket fd */, - fl.l_start, fl.l_len, &child_pid)); - - int status = 0; - ASSERT_THAT(RetryEINTR(waitpid)(child_pid, &status, 0), SyscallSucceeds()); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == EAGAIN) - << "Exited with code: " << status; -} - -// NOTE: The blocking tests below aren't perfect. It's hard to assert exactly -// what the kernel did while handling a syscall. These tests are timing based -// because there really isn't any other reasonable way to assert that correct -// blocking behavior happened. - -// This test will verify that blocking works as expected when another process -// holds a write lock when obtaining a write lock. This test will hold the lock -// for some amount of time and then wait for the second process to send over the -// socket_fd the amount of time it was blocked for before the lock succeeded. -TEST_F(FcntlLockTest, SetWriteLockThenBlockingWriteLock) { - auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR, 0666)); - - struct flock fl; - fl.l_type = F_WRLCK; - fl.l_whence = SEEK_SET; - fl.l_start = 0; - fl.l_len = 0; - - // Take the write lock. - ASSERT_THAT(fcntl(fd.get(), F_SETLKW, &fl), SyscallSucceeds()); - - // Attempt to take the read lock in a sub process. This will immediately block - // so we will release our lock after some amount of time and then assert the - // amount of time the other process was blocked for. - pid_t child_pid = 0; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE(SubprocessLock( - file.path(), true /* write lock */, true /* Blocking Lock */, - true /* Retry on EINTR */, fds_[1] /* Socket fd for timing information */, - fl.l_start, fl.l_len, &child_pid)); - - // We will wait kHoldLockForSec before we release our lock allowing the - // subprocess to obtain it. - constexpr absl::Duration kHoldLockFor = absl::Seconds(5); - const int64_t kMinBlockTimeUsec = absl::ToInt64Microseconds(absl::Seconds(1)); - - absl::SleepFor(kHoldLockFor); - - // Unlock our write lock. - fl.l_type = F_UNLCK; - ASSERT_THAT(fcntl(fd.get(), F_SETLKW, &fl), SyscallSucceeds()); - - // Read the blocked time from the subprocess socket. - int64_t subprocess_blocked_time_usec = GetSubprocessFcntlTimeInUsec(); - - // We must have been waiting at least kMinBlockTime. - EXPECT_GT(subprocess_blocked_time_usec, kMinBlockTimeUsec); - - // The FCNTL write lock must always succeed as it will simply block until it - // can obtain the lock. - int status = 0; - ASSERT_THAT(RetryEINTR(waitpid)(child_pid, &status, 0), SyscallSucceeds()); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << "Exited with code: " << status; -} - -// This test will veirfy that blocking works as expected when another process -// holds a read lock when obtaining a write lock. This test will hold the lock -// for some amount of time and then wait for the second process to send over the -// socket_fd the amount of time it was blocked for before the lock succeeded. -TEST_F(FcntlLockTest, SetReadLockThenBlockingWriteLock) { - auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR, 0666)); - - struct flock fl; - fl.l_type = F_RDLCK; - fl.l_whence = SEEK_SET; - fl.l_start = 0; - fl.l_len = 0; - - // Take the write lock. - ASSERT_THAT(fcntl(fd.get(), F_SETLKW, &fl), SyscallSucceeds()); - - // Attempt to take the read lock in a sub process. This will immediately block - // so we will release our lock after some amount of time and then assert the - // amount of time the other process was blocked for. - pid_t child_pid = 0; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE(SubprocessLock( - file.path(), true /* write lock */, true /* Blocking Lock */, - true /* Retry on EINTR */, fds_[1] /* Socket fd for timing information */, - fl.l_start, fl.l_len, &child_pid)); - - // We will wait kHoldLockForSec before we release our lock allowing the - // subprocess to obtain it. - constexpr absl::Duration kHoldLockFor = absl::Seconds(5); - - const int64_t kMinBlockTimeUsec = absl::ToInt64Microseconds(absl::Seconds(1)); - - absl::SleepFor(kHoldLockFor); - - // Unlock our READ lock. - fl.l_type = F_UNLCK; - ASSERT_THAT(fcntl(fd.get(), F_SETLKW, &fl), SyscallSucceeds()); - - // Read the blocked time from the subprocess socket. - int64_t subprocess_blocked_time_usec = GetSubprocessFcntlTimeInUsec(); - - // We must have been waiting at least kMinBlockTime. - EXPECT_GT(subprocess_blocked_time_usec, kMinBlockTimeUsec); - - // The FCNTL write lock must always succeed as it will simply block until it - // can obtain the lock. - int status = 0; - ASSERT_THAT(RetryEINTR(waitpid)(child_pid, &status, 0), SyscallSucceeds()); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << "Exited with code: " << status; -} - -// This test will veirfy that blocking works as expected when another process -// holds a write lock when obtaining a read lock. This test will hold the lock -// for some amount of time and then wait for the second process to send over the -// socket_fd the amount of time it was blocked for before the lock succeeded. -TEST_F(FcntlLockTest, SetWriteLockThenBlockingReadLock) { - auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR, 0666)); - - struct flock fl; - fl.l_type = F_WRLCK; - fl.l_whence = SEEK_SET; - fl.l_start = 0; - fl.l_len = 0; - - // Take the write lock. - ASSERT_THAT(fcntl(fd.get(), F_SETLKW, &fl), SyscallSucceeds()); - - // Attempt to take the read lock in a sub process. This will immediately block - // so we will release our lock after some amount of time and then assert the - // amount of time the other process was blocked for. - pid_t child_pid = 0; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE(SubprocessLock( - file.path(), false /* read lock */, true /* Blocking Lock */, - true /* Retry on EINTR */, fds_[1] /* Socket fd for timing information */, - fl.l_start, fl.l_len, &child_pid)); - - // We will wait kHoldLockForSec before we release our lock allowing the - // subprocess to obtain it. - constexpr absl::Duration kHoldLockFor = absl::Seconds(5); - - const int64_t kMinBlockTimeUsec = absl::ToInt64Microseconds(absl::Seconds(1)); - - absl::SleepFor(kHoldLockFor); - - // Unlock our write lock. - fl.l_type = F_UNLCK; - ASSERT_THAT(fcntl(fd.get(), F_SETLKW, &fl), SyscallSucceeds()); - - // Read the blocked time from the subprocess socket. - int64_t subprocess_blocked_time_usec = GetSubprocessFcntlTimeInUsec(); - - // We must have been waiting at least kMinBlockTime. - EXPECT_GT(subprocess_blocked_time_usec, kMinBlockTimeUsec); - - // The FCNTL read lock must always succeed as it will simply block until it - // can obtain the lock. - int status = 0; - ASSERT_THAT(RetryEINTR(waitpid)(child_pid, &status, 0), SyscallSucceeds()); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << "Exited with code: " << status; -} - -// This test will verify that when one process only holds a read lock that -// another will not block while obtaining a read lock when F_SETLKW is used. -TEST_F(FcntlLockTest, SetReadLockThenBlockingReadLock) { - auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR, 0666)); - - struct flock fl; - fl.l_type = F_RDLCK; - fl.l_whence = SEEK_SET; - fl.l_start = 0; - fl.l_len = 0; - - // Take the READ lock. - ASSERT_THAT(fcntl(fd.get(), F_SETLKW, &fl), SyscallSucceeds()); - - // Attempt to take the read lock in a sub process. Since multiple processes - // can hold a read lock this should immediately return without blocking - // even though we used F_SETLKW in the subprocess. - pid_t child_pid = 0; - auto sp = ASSERT_NO_ERRNO_AND_VALUE(SubprocessLock( - file.path(), false /* read lock */, true /* Blocking Lock */, - true /* Retry on EINTR */, -1 /* No fd, should not block */, fl.l_start, - fl.l_len, &child_pid)); - - // We never release the lock and the subprocess should still obtain it without - // blocking for any period of time. - int status = 0; - ASSERT_THAT(RetryEINTR(waitpid)(child_pid, &status, 0), SyscallSucceeds()); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << "Exited with code: " << status; -} - -TEST(FcntlTest, GetO_ASYNC) { - FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE( - Socket(AF_UNIX, SOCK_SEQPACKET | SOCK_NONBLOCK | SOCK_CLOEXEC, 0)); - - int flag_fl = -1; - ASSERT_THAT(flag_fl = fcntl(s.get(), F_GETFL), SyscallSucceeds()); - EXPECT_EQ(flag_fl & O_ASYNC, 0); - - int flag_fd = -1; - ASSERT_THAT(flag_fd = fcntl(s.get(), F_GETFD), SyscallSucceeds()); - EXPECT_EQ(flag_fd & O_ASYNC, 0); -} - -TEST(FcntlTest, SetFlO_ASYNC) { - FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE( - Socket(AF_UNIX, SOCK_SEQPACKET | SOCK_NONBLOCK | SOCK_CLOEXEC, 0)); - - int before_fl = -1; - ASSERT_THAT(before_fl = fcntl(s.get(), F_GETFL), SyscallSucceeds()); - - int before_fd = -1; - ASSERT_THAT(before_fd = fcntl(s.get(), F_GETFD), SyscallSucceeds()); - - ASSERT_THAT(fcntl(s.get(), F_SETFL, before_fl | O_ASYNC), SyscallSucceeds()); - - int after_fl = -1; - ASSERT_THAT(after_fl = fcntl(s.get(), F_GETFL), SyscallSucceeds()); - EXPECT_EQ(after_fl, before_fl | O_ASYNC); - - int after_fd = -1; - ASSERT_THAT(after_fd = fcntl(s.get(), F_GETFD), SyscallSucceeds()); - EXPECT_EQ(after_fd, before_fd); -} - -TEST(FcntlTest, SetFdO_ASYNC) { - FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE( - Socket(AF_UNIX, SOCK_SEQPACKET | SOCK_NONBLOCK | SOCK_CLOEXEC, 0)); - - int before_fl = -1; - ASSERT_THAT(before_fl = fcntl(s.get(), F_GETFL), SyscallSucceeds()); - - int before_fd = -1; - ASSERT_THAT(before_fd = fcntl(s.get(), F_GETFD), SyscallSucceeds()); - - ASSERT_THAT(fcntl(s.get(), F_SETFD, before_fd | O_ASYNC), SyscallSucceeds()); - - int after_fl = -1; - ASSERT_THAT(after_fl = fcntl(s.get(), F_GETFL), SyscallSucceeds()); - EXPECT_EQ(after_fl, before_fl); - - int after_fd = -1; - ASSERT_THAT(after_fd = fcntl(s.get(), F_GETFD), SyscallSucceeds()); - EXPECT_EQ(after_fd, before_fd); -} - -TEST(FcntlTest, DupAfterO_ASYNC) { - FileDescriptor s1 = ASSERT_NO_ERRNO_AND_VALUE( - Socket(AF_UNIX, SOCK_SEQPACKET | SOCK_NONBLOCK | SOCK_CLOEXEC, 0)); - - int before = -1; - ASSERT_THAT(before = fcntl(s1.get(), F_GETFL), SyscallSucceeds()); - - ASSERT_THAT(fcntl(s1.get(), F_SETFL, before | O_ASYNC), SyscallSucceeds()); - - FileDescriptor fd2 = ASSERT_NO_ERRNO_AND_VALUE(s1.Dup()); - - int after = -1; - ASSERT_THAT(after = fcntl(fd2.get(), F_GETFL), SyscallSucceeds()); - EXPECT_EQ(after & O_ASYNC, O_ASYNC); -} - -TEST(FcntlTest, GetOwn) { - FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE( - Socket(AF_UNIX, SOCK_SEQPACKET | SOCK_NONBLOCK | SOCK_CLOEXEC, 0)); - - EXPECT_EQ(syscall(__NR_fcntl, s.get(), F_GETOWN), 0); - MaybeSave(); -} - -TEST(FcntlTest, GetOwnEx) { - FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE( - Socket(AF_UNIX, SOCK_SEQPACKET | SOCK_NONBLOCK | SOCK_CLOEXEC, 0)); - - f_owner_ex owner = {}; - EXPECT_THAT(syscall(__NR_fcntl, s.get(), F_GETOWN_EX, &owner), - SyscallSucceedsWithValue(0)); -} - -TEST(FcntlTest, SetOwnExInvalidType) { - FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE( - Socket(AF_UNIX, SOCK_SEQPACKET | SOCK_NONBLOCK | SOCK_CLOEXEC, 0)); - - f_owner_ex owner = {}; - owner.type = __pid_type(-1); - EXPECT_THAT(syscall(__NR_fcntl, s.get(), F_SETOWN_EX, &owner), - SyscallFailsWithErrno(EINVAL)); -} - -TEST(FcntlTest, SetOwnExInvalidTid) { - FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE( - Socket(AF_UNIX, SOCK_SEQPACKET | SOCK_NONBLOCK | SOCK_CLOEXEC, 0)); - - f_owner_ex owner = {}; - owner.type = F_OWNER_TID; - owner.pid = -1; - - EXPECT_THAT(syscall(__NR_fcntl, s.get(), F_SETOWN_EX, &owner), - SyscallFailsWithErrno(ESRCH)); -} - -TEST(FcntlTest, SetOwnExInvalidPid) { - FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE( - Socket(AF_UNIX, SOCK_SEQPACKET | SOCK_NONBLOCK | SOCK_CLOEXEC, 0)); - - f_owner_ex owner = {}; - owner.type = F_OWNER_PID; - owner.pid = -1; - - EXPECT_THAT(syscall(__NR_fcntl, s.get(), F_SETOWN_EX, &owner), - SyscallFailsWithErrno(ESRCH)); -} - -TEST(FcntlTest, SetOwnExInvalidPgrp) { - FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE( - Socket(AF_UNIX, SOCK_SEQPACKET | SOCK_NONBLOCK | SOCK_CLOEXEC, 0)); - - f_owner_ex owner = {}; - owner.type = F_OWNER_PGRP; - owner.pid = -1; - - EXPECT_THAT(syscall(__NR_fcntl, s.get(), F_SETOWN_EX, &owner), - SyscallFailsWithErrno(ESRCH)); -} - -TEST(FcntlTest, SetOwnExTid) { - FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE( - Socket(AF_UNIX, SOCK_SEQPACKET | SOCK_NONBLOCK | SOCK_CLOEXEC, 0)); - - f_owner_ex owner = {}; - owner.type = F_OWNER_TID; - EXPECT_THAT(owner.pid = syscall(__NR_gettid), SyscallSucceeds()); - - ASSERT_THAT(syscall(__NR_fcntl, s.get(), F_SETOWN_EX, &owner), - SyscallSucceeds()); - - EXPECT_EQ(syscall(__NR_fcntl, s.get(), F_GETOWN), owner.pid); - MaybeSave(); -} - -TEST(FcntlTest, SetOwnExPid) { - FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE( - Socket(AF_UNIX, SOCK_SEQPACKET | SOCK_NONBLOCK | SOCK_CLOEXEC, 0)); - - f_owner_ex owner = {}; - owner.type = F_OWNER_PID; - EXPECT_THAT(owner.pid = getpid(), SyscallSucceeds()); - - ASSERT_THAT(syscall(__NR_fcntl, s.get(), F_SETOWN_EX, &owner), - SyscallSucceeds()); - - EXPECT_EQ(syscall(__NR_fcntl, s.get(), F_GETOWN), owner.pid); - MaybeSave(); -} - -TEST(FcntlTest, SetOwnExPgrp) { - FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE( - Socket(AF_UNIX, SOCK_SEQPACKET | SOCK_NONBLOCK | SOCK_CLOEXEC, 0)); - - f_owner_ex owner = {}; - owner.type = F_OWNER_PGRP; - EXPECT_THAT(owner.pid = getpgrp(), SyscallSucceeds()); - - ASSERT_THAT(syscall(__NR_fcntl, s.get(), F_SETOWN_EX, &owner), - SyscallSucceeds()); - - // NOTE(igudger): I don't understand why, but this is flaky on Linux. - // GetOwnExPgrp (below) does not have this issue. - SKIP_IF(!IsRunningOnGvisor()); - - EXPECT_EQ(syscall(__NR_fcntl, s.get(), F_GETOWN), -owner.pid); - MaybeSave(); -} - -TEST(FcntlTest, GetOwnExTid) { - FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE( - Socket(AF_UNIX, SOCK_SEQPACKET | SOCK_NONBLOCK | SOCK_CLOEXEC, 0)); - - f_owner_ex set_owner = {}; - set_owner.type = F_OWNER_TID; - EXPECT_THAT(set_owner.pid = syscall(__NR_gettid), SyscallSucceeds()); - - ASSERT_THAT(syscall(__NR_fcntl, s.get(), F_SETOWN_EX, &set_owner), - SyscallSucceeds()); - - f_owner_ex got_owner = {}; - ASSERT_THAT(syscall(__NR_fcntl, s.get(), F_GETOWN_EX, &got_owner), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(got_owner.type, set_owner.type); - EXPECT_EQ(got_owner.pid, set_owner.pid); -} - -TEST(FcntlTest, GetOwnExPid) { - FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE( - Socket(AF_UNIX, SOCK_SEQPACKET | SOCK_NONBLOCK | SOCK_CLOEXEC, 0)); - - f_owner_ex set_owner = {}; - set_owner.type = F_OWNER_PID; - EXPECT_THAT(set_owner.pid = getpid(), SyscallSucceeds()); - - ASSERT_THAT(syscall(__NR_fcntl, s.get(), F_SETOWN_EX, &set_owner), - SyscallSucceeds()); - - f_owner_ex got_owner = {}; - ASSERT_THAT(syscall(__NR_fcntl, s.get(), F_GETOWN_EX, &got_owner), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(got_owner.type, set_owner.type); - EXPECT_EQ(got_owner.pid, set_owner.pid); -} - -TEST(FcntlTest, GetOwnExPgrp) { - FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE( - Socket(AF_UNIX, SOCK_SEQPACKET | SOCK_NONBLOCK | SOCK_CLOEXEC, 0)); - - f_owner_ex set_owner = {}; - set_owner.type = F_OWNER_PGRP; - EXPECT_THAT(set_owner.pid = getpgrp(), SyscallSucceeds()); - - ASSERT_THAT(syscall(__NR_fcntl, s.get(), F_SETOWN_EX, &set_owner), - SyscallSucceeds()); - - f_owner_ex got_owner = {}; - ASSERT_THAT(syscall(__NR_fcntl, s.get(), F_GETOWN_EX, &got_owner), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(got_owner.type, set_owner.type); - EXPECT_EQ(got_owner.pid, set_owner.pid); -} - -} // namespace - -} // namespace testing -} // namespace gvisor - -int main(int argc, char** argv) { - gvisor::testing::TestInit(&argc, &argv); - - const std::string setlock_on = absl::GetFlag(FLAGS_child_setlock_on); - if (!setlock_on.empty()) { - int socket_fd = absl::GetFlag(FLAGS_socket_fd); - int fd = open(setlock_on.c_str(), O_RDWR, 0666); - if (fd == -1 && errno != 0) { - int err = errno; - std::cerr << "CHILD open " << setlock_on << " failed " << err - << std::endl; - exit(err); - } - - struct flock fl; - if (absl::GetFlag(FLAGS_child_setlock_write)) { - fl.l_type = F_WRLCK; - } else { - fl.l_type = F_RDLCK; - } - fl.l_whence = SEEK_SET; - fl.l_start = absl::GetFlag(FLAGS_child_setlock_start); - fl.l_len = absl::GetFlag(FLAGS_child_setlock_len); - - // Test the fcntl, no need to log, the error is unambiguously - // from fcntl at this point. - int err = 0; - int ret = 0; - - gvisor::testing::MonotonicTimer timer; - timer.Start(); - do { - ret = fcntl(fd, absl::GetFlag(FLAGS_blocking) ? F_SETLKW : F_SETLK, &fl); - } while (absl::GetFlag(FLAGS_retry_eintr) && ret == -1 && errno == EINTR); - auto usec = absl::ToInt64Microseconds(timer.Duration()); - - if (ret == -1 && errno != 0) { - err = errno; - } - - // If there is a socket fd let's send back the time in microseconds it took - // to execute this syscall. - if (socket_fd != -1) { - gvisor::testing::WriteFd(socket_fd, reinterpret_cast<void*>(&usec), - sizeof(usec)); - close(socket_fd); - } - - close(fd); - exit(err); - } - - return RUN_ALL_TESTS(); -} diff --git a/test/syscalls/linux/file_base.h b/test/syscalls/linux/file_base.h deleted file mode 100644 index 6f80bc97c..000000000 --- a/test/syscalls/linux/file_base.h +++ /dev/null @@ -1,117 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_SYSCALLS_FILE_BASE_H_ -#define GVISOR_TEST_SYSCALLS_FILE_BASE_H_ - -#include <arpa/inet.h> -#include <errno.h> -#include <fcntl.h> -#include <netinet/in.h> -#include <stddef.h> -#include <stdio.h> -#include <string.h> -#include <sys/socket.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <sys/uio.h> -#include <unistd.h> - -#include <cstring> -#include <string> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "absl/strings/string_view.h" -#include "test/util/file_descriptor.h" -#include "test/util/posix_error.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -class FileTest : public ::testing::Test { - public: - void SetUp() override { - test_pipe_[0] = -1; - test_pipe_[1] = -1; - - test_file_name_ = NewTempAbsPath(); - test_file_fd_ = ASSERT_NO_ERRNO_AND_VALUE( - Open(test_file_name_, O_CREAT | O_RDWR, S_IRUSR | S_IWUSR)); - - // FIXME(edahlgren): enable when mknod syscall is supported. - // test_fifo_name_ = NewTempAbsPath(); - // ASSERT_THAT(mknod(test_fifo_name_.c_str()), S_IFIFO|0644, 0, - // SyscallSucceeds()); - // ASSERT_THAT(test_fifo_[1] = open(test_fifo_name_.c_str(), - // O_WRONLY), - // SyscallSucceeds()); - // ASSERT_THAT(test_fifo_[0] = open(test_fifo_name_.c_str(), - // O_RDONLY), - // SyscallSucceeds()); - - ASSERT_THAT(pipe(test_pipe_), SyscallSucceeds()); - ASSERT_THAT(fcntl(test_pipe_[0], F_SETFL, O_NONBLOCK), SyscallSucceeds()); - } - - // CloseFile will allow the test to manually close the file descriptor. - void CloseFile() { test_file_fd_.reset(); } - - // UnlinkFile will allow the test to manually unlink the file. - void UnlinkFile() { - if (!test_file_name_.empty()) { - EXPECT_THAT(unlink(test_file_name_.c_str()), SyscallSucceeds()); - test_file_name_.clear(); - } - } - - // ClosePipes will allow the test to manually close the pipes. - void ClosePipes() { - if (test_pipe_[0] > 0) { - EXPECT_THAT(close(test_pipe_[0]), SyscallSucceeds()); - } - - if (test_pipe_[1] > 0) { - EXPECT_THAT(close(test_pipe_[1]), SyscallSucceeds()); - } - - test_pipe_[0] = -1; - test_pipe_[1] = -1; - } - - void TearDown() override { - CloseFile(); - UnlinkFile(); - ClosePipes(); - - // FIXME(edahlgren): enable when mknod syscall is supported. - // close(test_fifo_[0]); - // close(test_fifo_[1]); - // unlink(test_fifo_name_.c_str()); - } - - std::string test_file_name_; - std::string test_fifo_name_; - FileDescriptor test_file_fd_; - - int test_fifo_[2]; - int test_pipe_[2]; -}; - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_SYSCALLS_FILE_BASE_H_ diff --git a/test/syscalls/linux/flock.cc b/test/syscalls/linux/flock.cc deleted file mode 100644 index 3ecb8db8e..000000000 --- a/test/syscalls/linux/flock.cc +++ /dev/null @@ -1,589 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <sys/file.h> - -#include <string> - -#include "gtest/gtest.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/syscalls/linux/file_base.h" -#include "test/util/file_descriptor.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" -#include "test/util/timer_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -class FlockTest : public FileTest {}; - -TEST_F(FlockTest, BadFD) { - // EBADF: fd is not an open file descriptor. - ASSERT_THAT(flock(-1, 0), SyscallFailsWithErrno(EBADF)); -} - -TEST_F(FlockTest, InvalidOpCombinations) { - // The operation cannot be both exclusive and shared. - EXPECT_THAT(flock(test_file_fd_.get(), LOCK_EX | LOCK_SH | LOCK_NB), - SyscallFailsWithErrno(EINVAL)); - - // Locking and Unlocking doesn't make sense. - EXPECT_THAT(flock(test_file_fd_.get(), LOCK_EX | LOCK_UN | LOCK_NB), - SyscallFailsWithErrno(EINVAL)); - EXPECT_THAT(flock(test_file_fd_.get(), LOCK_SH | LOCK_UN | LOCK_NB), - SyscallFailsWithErrno(EINVAL)); -} - -TEST_F(FlockTest, NoOperationSpecified) { - // Not specifying an operation is invalid. - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_NB), - SyscallFailsWithErrno(EINVAL)); -} - -TEST(FlockTestNoFixture, FlockSupportsPipes) { - int fds[2]; - ASSERT_THAT(pipe(fds), SyscallSucceeds()); - - EXPECT_THAT(flock(fds[0], LOCK_EX | LOCK_NB), SyscallSucceeds()); - EXPECT_THAT(close(fds[0]), SyscallSucceeds()); - EXPECT_THAT(close(fds[1]), SyscallSucceeds()); -} - -TEST_F(FlockTest, TestSimpleExLock) { - // Test that we can obtain an exclusive lock (no other holders) - // and that we can unlock it. - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_EX | LOCK_NB), - SyscallSucceedsWithValue(0)); - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_UN), SyscallSucceedsWithValue(0)); -} - -TEST_F(FlockTest, TestSimpleShLock) { - // Test that we can obtain a shared lock (no other holders) - // and that we can unlock it. - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_SH | LOCK_NB), - SyscallSucceedsWithValue(0)); - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_UN), SyscallSucceedsWithValue(0)); -} - -TEST_F(FlockTest, TestLockableAnyMode) { - // flock(2): A shared or exclusive lock can be placed on a file - // regardless of the mode in which the file was opened. - const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE( - Open(test_file_name_, O_RDONLY)); // open read only to test - - // Mode shouldn't prevent us from taking an exclusive lock. - ASSERT_THAT(flock(fd.get(), LOCK_EX | LOCK_NB), SyscallSucceedsWithValue(0)); - - // Unlock - ASSERT_THAT(flock(fd.get(), LOCK_UN), SyscallSucceedsWithValue(0)); -} - -TEST_F(FlockTest, TestUnlockWithNoHolders) { - // Test that unlocking when no one holds a lock succeeeds. - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_UN), SyscallSucceedsWithValue(0)); -} - -TEST_F(FlockTest, TestRepeatedExLockingBySameHolder) { - // Test that repeated locking by the same holder for the - // same type of lock works correctly. - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_NB | LOCK_EX), - SyscallSucceedsWithValue(0)); - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_NB | LOCK_EX), - SyscallSucceedsWithValue(0)); - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_UN), SyscallSucceedsWithValue(0)); -} - -TEST_F(FlockTest, TestRepeatedExLockingSingleUnlock) { - // Test that repeated locking by the same holder for the - // same type of lock works correctly and that a single unlock is required. - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_NB | LOCK_EX), - SyscallSucceedsWithValue(0)); - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_NB | LOCK_EX), - SyscallSucceedsWithValue(0)); - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_UN), SyscallSucceedsWithValue(0)); - - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(test_file_name_, O_RDONLY)); - - // Should be unlocked at this point - ASSERT_THAT(flock(fd.get(), LOCK_NB | LOCK_EX), SyscallSucceedsWithValue(0)); - - ASSERT_THAT(flock(fd.get(), LOCK_UN), SyscallSucceedsWithValue(0)); -} - -TEST_F(FlockTest, TestRepeatedShLockingBySameHolder) { - // Test that repeated locking by the same holder for the - // same type of lock works correctly. - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_NB | LOCK_SH), - SyscallSucceedsWithValue(0)); - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_NB | LOCK_SH), - SyscallSucceedsWithValue(0)); - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_UN), SyscallSucceedsWithValue(0)); -} - -TEST_F(FlockTest, TestSingleHolderUpgrade) { - // Test that a shared lock is upgradable when no one else holds a lock. - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_NB | LOCK_SH), - SyscallSucceedsWithValue(0)); - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_NB | LOCK_EX), - SyscallSucceedsWithValue(0)); - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_UN), SyscallSucceedsWithValue(0)); -} - -TEST_F(FlockTest, TestSingleHolderDowngrade) { - // Test single holder lock downgrade case. - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_EX | LOCK_NB), - SyscallSucceedsWithValue(0)); - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_SH | LOCK_NB), - SyscallSucceedsWithValue(0)); - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_UN), SyscallSucceedsWithValue(0)); -} - -TEST_F(FlockTest, TestMultipleShared) { - // This is a simple test to verify that multiple independent shared - // locks will be granted. - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_SH | LOCK_NB), - SyscallSucceedsWithValue(0)); - - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(test_file_name_, O_RDWR)); - - // A shared lock should be granted as there only exists other shared locks. - ASSERT_THAT(flock(fd.get(), LOCK_SH | LOCK_NB), SyscallSucceedsWithValue(0)); - - // Unlock both. - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_UN), SyscallSucceedsWithValue(0)); - ASSERT_THAT(flock(fd.get(), LOCK_UN), SyscallSucceedsWithValue(0)); -} - -/* - * flock(2): If a process uses open(2) (or similar) to obtain more than one - * descriptor for the same file, these descriptors are treated - * independently by flock(). An attempt to lock the file using one of - * these file descriptors may be denied by a lock that the calling process - * has already placed via another descriptor. - */ -TEST_F(FlockTest, TestMultipleHolderSharedExclusive) { - // This test will verify that an exclusive lock will not be granted - // while a shared is held. - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_SH | LOCK_NB), - SyscallSucceedsWithValue(0)); - - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(test_file_name_, O_RDWR)); - - // Verify We're unable to get an exlcusive lock via the second FD. - // because someone is holding a shared lock. - ASSERT_THAT(flock(fd.get(), LOCK_EX | LOCK_NB), - SyscallFailsWithErrno(EWOULDBLOCK)); - - // Unlock - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_UN), SyscallSucceedsWithValue(0)); -} - -TEST_F(FlockTest, TestSharedLockFailExclusiveHolder) { - // This test will verify that a shared lock is denied while - // someone holds an exclusive lock. - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_EX | LOCK_NB), - SyscallSucceedsWithValue(0)); - - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(test_file_name_, O_RDWR)); - - // Verify we're unable to get an shared lock via the second FD. - // because someone is holding an exclusive lock. - ASSERT_THAT(flock(fd.get(), LOCK_SH | LOCK_NB), - SyscallFailsWithErrno(EWOULDBLOCK)); - - // Unlock - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_UN), SyscallSucceedsWithValue(0)); -} - -TEST_F(FlockTest, TestExclusiveLockFailExclusiveHolder) { - // This test will verify that an exclusive lock is denied while - // someone already holds an exclsuive lock. - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_EX | LOCK_NB), - SyscallSucceedsWithValue(0)); - - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(test_file_name_, O_RDWR)); - - // Verify we're unable to get an exclusive lock via the second FD - // because someone is already holding an exclusive lock. - ASSERT_THAT(flock(fd.get(), LOCK_EX | LOCK_NB), - SyscallFailsWithErrno(EWOULDBLOCK)); - - // Unlock - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_UN), SyscallSucceedsWithValue(0)); -} - -TEST_F(FlockTest, TestMultipleHolderSharedExclusiveUpgrade) { - // This test will verify that we cannot obtain an exclusive lock while - // a shared lock is held by another descriptor, then verify that an upgrade - // is possible on a shared lock once all other shared locks have closed. - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_SH | LOCK_NB), - SyscallSucceedsWithValue(0)); - - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(test_file_name_, O_RDWR)); - - // Verify we're unable to get an exclusive lock via the second FD because - // a shared lock is held. - ASSERT_THAT(flock(fd.get(), LOCK_EX | LOCK_NB), - SyscallFailsWithErrno(EWOULDBLOCK)); - - // Verify that we can get a shared lock via the second descriptor instead - ASSERT_THAT(flock(fd.get(), LOCK_SH | LOCK_NB), SyscallSucceedsWithValue(0)); - - // Unlock the first and there will only be one shared lock remaining. - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_UN), SyscallSucceedsWithValue(0)); - - // Upgrade 2nd fd. - ASSERT_THAT(flock(fd.get(), LOCK_EX | LOCK_NB), SyscallSucceedsWithValue(0)); - - // Finally unlock the second - ASSERT_THAT(flock(fd.get(), LOCK_UN), SyscallSucceedsWithValue(0)); -} - -TEST_F(FlockTest, TestMultipleHolderSharedExclusiveDowngrade) { - // This test will verify that a shared lock is not obtainable while an - // exclusive lock is held but that once the first is downgraded that - // the second independent file descriptor can also get a shared lock. - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_EX | LOCK_NB), - SyscallSucceedsWithValue(0)); - - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(test_file_name_, O_RDWR)); - - // Verify We're unable to get a shared lock via the second FD because - // an exclusive lock is held. - ASSERT_THAT(flock(fd.get(), LOCK_SH | LOCK_NB), - SyscallFailsWithErrno(EWOULDBLOCK)); - - // Verify that we can downgrade the first. - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_SH | LOCK_NB), - SyscallSucceedsWithValue(0)); - - // Now verify that we can obtain a shared lock since the first was downgraded. - ASSERT_THAT(flock(fd.get(), LOCK_SH | LOCK_NB), SyscallSucceedsWithValue(0)); - - // Finally unlock both. - ASSERT_THAT(flock(fd.get(), LOCK_UN), SyscallSucceedsWithValue(0)); - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_UN), SyscallSucceedsWithValue(0)); -} - -/* - * flock(2): Locks created by flock() are associated with an open file table - * entry. This means that duplicate file descriptors (created by, for example, - * fork(2) or dup(2)) refer to the same lock, and this lock may be modified or - * released using any of these descriptors. Furthermore, the lock is released - * either by an explicit LOCK_UN operation on any of these duplicate descriptors - * or when all such descriptors have been closed. - */ -TEST_F(FlockTest, TestDupFdUpgrade) { - // This test will verify that a shared lock is upgradeable via a dupped - // file descriptor, if the FD wasn't dupped this would fail. - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_SH | LOCK_NB), - SyscallSucceedsWithValue(0)); - - const FileDescriptor dup_fd = ASSERT_NO_ERRNO_AND_VALUE(test_file_fd_.Dup()); - - // Now we should be able to upgrade via the dupped fd. - ASSERT_THAT(flock(dup_fd.get(), LOCK_EX | LOCK_NB), - SyscallSucceedsWithValue(0)); - - // Validate unlock via dupped fd. - ASSERT_THAT(flock(dup_fd.get(), LOCK_UN), SyscallSucceedsWithValue(0)); -} - -TEST_F(FlockTest, TestDupFdDowngrade) { - // This test will verify that a exclusive lock is downgradable via a dupped - // file descriptor, if the FD wasn't dupped this would fail. - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_EX | LOCK_NB), - SyscallSucceedsWithValue(0)); - - const FileDescriptor dup_fd = ASSERT_NO_ERRNO_AND_VALUE(test_file_fd_.Dup()); - - // Now we should be able to downgrade via the dupped fd. - ASSERT_THAT(flock(dup_fd.get(), LOCK_SH | LOCK_NB), - SyscallSucceedsWithValue(0)); - - // Validate unlock via dupped fd - ASSERT_THAT(flock(dup_fd.get(), LOCK_UN), SyscallSucceedsWithValue(0)); -} - -TEST_F(FlockTest, TestDupFdCloseRelease) { - // flock(2): Furthermore, the lock is released either by an explicit LOCK_UN - // operation on any of these duplicate descriptors, or when all such - // descriptors have been closed. - // - // This test will verify that a dupped fd closing will not release the - // underlying lock until all such dupped fds have closed. - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_EX | LOCK_NB), - SyscallSucceedsWithValue(0)); - - FileDescriptor dup_fd = ASSERT_NO_ERRNO_AND_VALUE(test_file_fd_.Dup()); - - // At this point we have ONE exclusive locked referenced by two different fds. - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(test_file_name_, O_RDWR)); - - // Validate that we cannot get a lock on a new unrelated FD. - ASSERT_THAT(flock(fd.get(), LOCK_EX | LOCK_NB), - SyscallFailsWithErrno(EWOULDBLOCK)); - - // Closing the dupped fd shouldn't affect the lock until all are closed. - dup_fd.reset(); // Closed the duped fd. - - // Validate that we still cannot get a lock on a new unrelated FD. - ASSERT_THAT(flock(fd.get(), LOCK_EX | LOCK_NB), - SyscallFailsWithErrno(EWOULDBLOCK)); - - // Closing the first fd - CloseFile(); // Will validate the syscall succeeds. - - // Now we should actually be able to get a lock since all fds related to - // the first lock are closed. - ASSERT_THAT(flock(fd.get(), LOCK_EX | LOCK_NB), SyscallSucceedsWithValue(0)); - - // Unlock. - ASSERT_THAT(flock(fd.get(), LOCK_UN), SyscallSucceedsWithValue(0)); -} - -TEST_F(FlockTest, TestDupFdUnlockRelease) { - /* flock(2): Furthermore, the lock is released either by an explicit LOCK_UN - * operation on any of these duplicate descriptors, or when all such - * descriptors have been closed. - */ - // This test will verify that an explict unlock on a dupped FD will release - // the underlying lock unlike the previous case where close on a dup was - // not enough to release the lock. - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_EX | LOCK_NB), - SyscallSucceedsWithValue(0)); - - const FileDescriptor dup_fd = ASSERT_NO_ERRNO_AND_VALUE(test_file_fd_.Dup()); - - // At this point we have ONE exclusive locked referenced by two different fds. - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(test_file_name_, O_RDWR)); - - // Validate that we cannot get a lock on a new unrelated FD. - ASSERT_THAT(flock(fd.get(), LOCK_EX | LOCK_NB), - SyscallFailsWithErrno(EWOULDBLOCK)); - - // Explicitly unlock via the dupped descriptor. - ASSERT_THAT(flock(dup_fd.get(), LOCK_UN), SyscallSucceedsWithValue(0)); - - // Validate that we can now get the lock since we explicitly unlocked. - ASSERT_THAT(flock(fd.get(), LOCK_EX | LOCK_NB), SyscallSucceedsWithValue(0)); - - // Unlock - ASSERT_THAT(flock(fd.get(), LOCK_UN), SyscallSucceedsWithValue(0)); -} - -TEST_F(FlockTest, TestDupFdFollowedByLock) { - // This test will verify that taking a lock on a file descriptor that has - // already been dupped means that the lock is shared between both. This is - // slightly different than than duping on an already locked FD. - FileDescriptor dup_fd = ASSERT_NO_ERRNO_AND_VALUE(test_file_fd_.Dup()); - - // Take a lock. - ASSERT_THAT(flock(dup_fd.get(), LOCK_EX | LOCK_NB), SyscallSucceeds()); - - // Now dup_fd and test_file_ should both reference the same lock. - // We shouldn't be able to obtain a lock until both are closed. - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(test_file_name_, O_RDWR)); - - // Closing the first fd - dup_fd.reset(); // Close the duped fd. - - // Validate that we cannot get a lock yet because the dupped descriptor. - ASSERT_THAT(flock(fd.get(), LOCK_EX | LOCK_NB), - SyscallFailsWithErrno(EWOULDBLOCK)); - - // Closing the second fd. - CloseFile(); // CloseFile() will validate the syscall succeeds. - - // Now we should be able to get the lock. - ASSERT_THAT(flock(fd.get(), LOCK_EX | LOCK_NB), SyscallSucceeds()); - - // Unlock. - ASSERT_THAT(flock(fd.get(), LOCK_UN), SyscallSucceedsWithValue(0)); -} - -// NOTE: These blocking tests are not perfect. Unfortunately it's very hard to -// determine if a thread was actually blocked in the kernel so we're forced -// to use timing. -TEST_F(FlockTest, BlockingLockNoBlockingForSharedLocks_NoRandomSave) { - // This test will verify that although LOCK_NB isn't specified - // two different fds can obtain shared locks without blocking. - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_SH), SyscallSucceeds()); - - // kHoldLockTime is the amount of time we will hold the lock before releasing. - constexpr absl::Duration kHoldLockTime = absl::Seconds(30); - - const DisableSave ds; // Timing-related. - - // We do this in another thread so we can determine if it was actually - // blocked by timing the amount of time it took for the syscall to complete. - ScopedThread t([&] { - MonotonicTimer timer; - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(test_file_name_, O_RDWR)); - - // Only a single shared lock is held, the lock will be granted immediately. - // This should be granted without any blocking. Don't save here to avoid - // wild discrepencies on timing. - timer.Start(); - ASSERT_THAT(flock(fd.get(), LOCK_SH), SyscallSucceeds()); - - // We held the lock for 30 seconds but this thread should not have - // blocked at all so we expect a very small duration on syscall completion. - ASSERT_LT(timer.Duration(), - absl::Seconds(1)); // 1000ms is much less than 30s. - - // We can release our second shared lock - ASSERT_THAT(flock(fd.get(), LOCK_UN), SyscallSucceeds()); - }); - - // Sleep before unlocking. - absl::SleepFor(kHoldLockTime); - - // Release the first shared lock. Don't save in this situation to avoid - // discrepencies in timing. - EXPECT_THAT(flock(test_file_fd_.get(), LOCK_UN), SyscallSucceeds()); -} - -TEST_F(FlockTest, BlockingLockFirstSharedSecondExclusive_NoRandomSave) { - // This test will verify that if someone holds a shared lock any attempt to - // obtain an exclusive lock will result in blocking. - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_SH), SyscallSucceeds()); - - // kHoldLockTime is the amount of time we will hold the lock before releasing. - constexpr absl::Duration kHoldLockTime = absl::Seconds(2); - - const DisableSave ds; // Timing-related. - - // We do this in another thread so we can determine if it was actually - // blocked by timing the amount of time it took for the syscall to complete. - ScopedThread t([&] { - MonotonicTimer timer; - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(test_file_name_, O_RDWR)); - - // This exclusive lock should block because someone is already holding a - // shared lock. We don't save here to avoid wild discrepencies on timing. - timer.Start(); - ASSERT_THAT(RetryEINTR(flock)(fd.get(), LOCK_EX), SyscallSucceeds()); - - // We should be blocked, we will expect to be blocked for more than 1.0s. - ASSERT_GT(timer.Duration(), absl::Seconds(1)); - - // We can release our exclusive lock. - ASSERT_THAT(flock(fd.get(), LOCK_UN), SyscallSucceeds()); - }); - - // Sleep before unlocking. - absl::SleepFor(kHoldLockTime); - - // Release the shared lock allowing the thread to proceed. - // We don't save here to avoid wild discrepencies in timing. - EXPECT_THAT(flock(test_file_fd_.get(), LOCK_UN), SyscallSucceeds()); -} - -TEST_F(FlockTest, BlockingLockFirstExclusiveSecondShared_NoRandomSave) { - // This test will verify that if someone holds an exclusive lock any attempt - // to obtain a shared lock will result in blocking. - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_EX), SyscallSucceeds()); - - // kHoldLockTime is the amount of time we will hold the lock before releasing. - constexpr absl::Duration kHoldLockTime = absl::Seconds(2); - - const DisableSave ds; // Timing-related. - - // We do this in another thread so we can determine if it was actually - // blocked by timing the amount of time it took for the syscall to complete. - ScopedThread t([&] { - MonotonicTimer timer; - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(test_file_name_, O_RDWR)); - - // This shared lock should block because someone is already holding an - // exclusive lock. We don't save here to avoid wild discrepencies on timing. - timer.Start(); - ASSERT_THAT(RetryEINTR(flock)(fd.get(), LOCK_SH), SyscallSucceeds()); - - // We should be blocked, we will expect to be blocked for more than 1.0s. - ASSERT_GT(timer.Duration(), absl::Seconds(1)); - - // We can release our shared lock. - ASSERT_THAT(flock(fd.get(), LOCK_UN), SyscallSucceeds()); - }); - - // Sleep before unlocking. - absl::SleepFor(kHoldLockTime); - - // Release the exclusive lock allowing the blocked thread to proceed. - // We don't save here to avoid wild discrepencies in timing. - EXPECT_THAT(flock(test_file_fd_.get(), LOCK_UN), SyscallSucceeds()); -} - -TEST_F(FlockTest, BlockingLockFirstExclusiveSecondExclusive_NoRandomSave) { - // This test will verify that if someone holds an exclusive lock any attempt - // to obtain another exclusive lock will result in blocking. - ASSERT_THAT(flock(test_file_fd_.get(), LOCK_EX), SyscallSucceeds()); - - // kHoldLockTime is the amount of time we will hold the lock before releasing. - constexpr absl::Duration kHoldLockTime = absl::Seconds(2); - - const DisableSave ds; // Timing-related. - - // We do this in another thread so we can determine if it was actually - // blocked by timing the amount of time it took for the syscall to complete. - ScopedThread t([&] { - MonotonicTimer timer; - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(test_file_name_, O_RDWR)); - - // This exclusive lock should block because someone is already holding an - // exclusive lock. - timer.Start(); - ASSERT_THAT(RetryEINTR(flock)(fd.get(), LOCK_EX), SyscallSucceeds()); - - // We should be blocked, we will expect to be blocked for more than 1.0s. - ASSERT_GT(timer.Duration(), absl::Seconds(1)); - - // We can release our exclusive lock. - ASSERT_THAT(flock(fd.get(), LOCK_UN), SyscallSucceeds()); - }); - - // Sleep before unlocking. - absl::SleepFor(kHoldLockTime); - - // Release the exclusive lock allowing the blocked thread to proceed. - // We don't save to avoid wild discrepencies in timing. - EXPECT_THAT(flock(test_file_fd_.get(), LOCK_UN), SyscallSucceeds()); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/fork.cc b/test/syscalls/linux/fork.cc deleted file mode 100644 index ff8bdfeb0..000000000 --- a/test/syscalls/linux/fork.cc +++ /dev/null @@ -1,451 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <fcntl.h> -#include <sched.h> -#include <stdlib.h> -#include <sys/mman.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <unistd.h> - -#include <atomic> -#include <cstdlib> - -#include "gtest/gtest.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/util/capability_util.h" -#include "test/util/logging.h" -#include "test/util/memory_util.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -using ::testing::Ge; - -class ForkTest : public ::testing::Test { - protected: - // SetUp creates a populated, open file. - void SetUp() override { - // Make a shared mapping. - shared_ = reinterpret_cast<char*>(mmap(0, kPageSize, PROT_READ | PROT_WRITE, - MAP_SHARED | MAP_ANONYMOUS, -1, 0)); - ASSERT_NE(reinterpret_cast<void*>(shared_), MAP_FAILED); - - // Make a private mapping. - private_ = - reinterpret_cast<char*>(mmap(0, kPageSize, PROT_READ | PROT_WRITE, - MAP_PRIVATE | MAP_ANONYMOUS, -1, 0)); - ASSERT_NE(reinterpret_cast<void*>(private_), MAP_FAILED); - - // Make a pipe. - ASSERT_THAT(pipe(pipes_), SyscallSucceeds()); - } - - // TearDown frees associated resources. - void TearDown() override { - EXPECT_THAT(munmap(shared_, kPageSize), SyscallSucceeds()); - EXPECT_THAT(munmap(private_, kPageSize), SyscallSucceeds()); - EXPECT_THAT(close(pipes_[0]), SyscallSucceeds()); - EXPECT_THAT(close(pipes_[1]), SyscallSucceeds()); - } - - // Fork executes a clone system call. - pid_t Fork() { - pid_t pid = fork(); - MaybeSave(); - TEST_PCHECK_MSG(pid >= 0, "fork failed"); - return pid; - } - - // Wait waits for the given pid and returns the exit status. If the child was - // killed by a signal or an error occurs, then 256+signal is returned. - int Wait(pid_t pid) { - int status; - while (true) { - int rval = wait4(pid, &status, 0, NULL); - if (rval < 0) { - return rval; - } - if (rval != pid) { - continue; - } - if (WIFEXITED(status)) { - return WEXITSTATUS(status); - } - if (WIFSIGNALED(status)) { - return 256 + WTERMSIG(status); - } - } - } - - // Exit exits the proccess. - void Exit(int code) { - _exit(code); - - // Should never reach here. Since the exit above failed, we really don't - // have much in the way of options to indicate failure. So we just try to - // log an assertion failure to the logs. The parent process will likely - // fail anyways if exit is not working. - TEST_CHECK_MSG(false, "_exit returned"); - } - - // ReadByte reads a byte from the shared pipe. - char ReadByte() { - char val = -1; - TEST_PCHECK(ReadFd(pipes_[0], &val, 1) == 1); - MaybeSave(); - return val; - } - - // WriteByte writes a byte from the shared pipe. - void WriteByte(char val) { - TEST_PCHECK(WriteFd(pipes_[1], &val, 1) == 1); - MaybeSave(); - } - - // Shared pipe. - int pipes_[2]; - - // Shared mapping (one page). - char* shared_; - - // Private mapping (one page). - char* private_; -}; - -TEST_F(ForkTest, Simple) { - pid_t child = Fork(); - if (child == 0) { - Exit(0); - } - EXPECT_THAT(Wait(child), SyscallSucceedsWithValue(0)); -} - -TEST_F(ForkTest, ExitCode) { - pid_t child = Fork(); - if (child == 0) { - Exit(123); - } - EXPECT_THAT(Wait(child), SyscallSucceedsWithValue(123)); - child = Fork(); - if (child == 0) { - Exit(1); - } - EXPECT_THAT(Wait(child), SyscallSucceedsWithValue(1)); -} - -TEST_F(ForkTest, Multi) { - pid_t child1 = Fork(); - if (child1 == 0) { - Exit(0); - } - pid_t child2 = Fork(); - if (child2 == 0) { - Exit(1); - } - EXPECT_THAT(Wait(child1), SyscallSucceedsWithValue(0)); - EXPECT_THAT(Wait(child2), SyscallSucceedsWithValue(1)); -} - -TEST_F(ForkTest, Pipe) { - pid_t child = Fork(); - if (child == 0) { - WriteByte(1); - Exit(0); - } - EXPECT_EQ(ReadByte(), 1); - EXPECT_THAT(Wait(child), SyscallSucceedsWithValue(0)); -} - -TEST_F(ForkTest, SharedMapping) { - pid_t child = Fork(); - if (child == 0) { - // Wait for the parent. - ReadByte(); - if (shared_[0] == 1) { - Exit(0); - } - // Failed. - Exit(1); - } - // Change the mapping. - ASSERT_EQ(shared_[0], 0); - shared_[0] = 1; - // Unblock the child. - WriteByte(0); - // Did it work? - EXPECT_THAT(Wait(child), SyscallSucceedsWithValue(0)); -} - -TEST_F(ForkTest, PrivateMapping) { - pid_t child = Fork(); - if (child == 0) { - // Wait for the parent. - ReadByte(); - if (private_[0] == 0) { - Exit(0); - } - // Failed. - Exit(1); - } - // Change the mapping. - ASSERT_EQ(private_[0], 0); - private_[0] = 1; - // Unblock the child. - WriteByte(0); - // Did it work? - EXPECT_THAT(Wait(child), SyscallSucceedsWithValue(0)); -} - -// CPUID is x86 specific. -#ifdef __x86_64__ -// Test that cpuid works after a fork. -TEST_F(ForkTest, Cpuid) { - pid_t child = Fork(); - - // We should be able to determine the CPU vendor. - ASSERT_NE(GetCPUVendor(), CPUVendor::kUnknownVendor); - - if (child == 0) { - Exit(0); - } - EXPECT_THAT(Wait(child), SyscallSucceedsWithValue(0)); -} -#endif - -TEST_F(ForkTest, Mmap) { - pid_t child = Fork(); - - if (child == 0) { - void* addr = - mmap(0, kPageSize, PROT_READ, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); - MaybeSave(); - Exit(addr == MAP_FAILED); - } - - EXPECT_THAT(Wait(child), SyscallSucceedsWithValue(0)); -} - -static volatile int alarmed = 0; - -void AlarmHandler(int sig, siginfo_t* info, void* context) { alarmed = 1; } - -TEST_F(ForkTest, Alarm) { - // Setup an alarm handler. - struct sigaction sa; - sa.sa_sigaction = AlarmHandler; - sigfillset(&sa.sa_mask); - sa.sa_flags = SA_SIGINFO; - EXPECT_THAT(sigaction(SIGALRM, &sa, nullptr), SyscallSucceeds()); - - pid_t child = Fork(); - - if (child == 0) { - alarm(1); - sleep(3); - if (!alarmed) { - Exit(1); - } - Exit(0); - } - - EXPECT_THAT(Wait(child), SyscallSucceedsWithValue(0)); - EXPECT_EQ(0, alarmed); -} - -// Child cannot affect parent private memory. Regression test for b/24137240. -TEST_F(ForkTest, PrivateMemory) { - std::atomic<uint32_t> local(0); - - pid_t child1 = Fork(); - if (child1 == 0) { - local++; - - pid_t child2 = Fork(); - if (child2 == 0) { - local++; - - TEST_CHECK(local.load() == 2); - - Exit(0); - } - - TEST_PCHECK(Wait(child2) == 0); - TEST_CHECK(local.load() == 1); - Exit(0); - } - - EXPECT_THAT(Wait(child1), SyscallSucceedsWithValue(0)); - EXPECT_EQ(0, local.load()); -} - -// Kernel-accessed buffers should remain coherent across COW. -// -// The buffer must be >= usermem.ZeroCopyMinBytes, as UnsafeAccess operates -// differently. Regression test for b/33811887. -TEST_F(ForkTest, COWSegment) { - constexpr int kBufSize = 1024; - char* read_buf = private_; - char* touch = private_ + kPageSize / 2; - - std::string contents(kBufSize, 'a'); - - ScopedThread t([&] { - // Wait to be sure the parent is blocked in read. - absl::SleepFor(absl::Seconds(3)); - - // Fork to mark private pages for COW. - // - // Use fork directly rather than the Fork wrapper to skip the multi-threaded - // check, and limit the child to async-signal-safe functions: - // - // "After a fork() in a multithreaded program, the child can safely call - // only async-signal-safe functions (see signal(7)) until such time as it - // calls execve(2)." - // - // Skip ASSERT in the child, as it isn't async-signal-safe. - pid_t child = fork(); - if (child == 0) { - // Wait to be sure parent touched memory. - sleep(3); - Exit(0); - } - - // Check success only in the parent. - ASSERT_THAT(child, SyscallSucceedsWithValue(Ge(0))); - - // Trigger COW on private page. - *touch = 42; - - // Write to pipe. Parent should still be able to read this. - EXPECT_THAT(WriteFd(pipes_[1], contents.c_str(), kBufSize), - SyscallSucceedsWithValue(kBufSize)); - - EXPECT_THAT(Wait(child), SyscallSucceedsWithValue(0)); - }); - - EXPECT_THAT(ReadFd(pipes_[0], read_buf, kBufSize), - SyscallSucceedsWithValue(kBufSize)); - EXPECT_STREQ(contents.c_str(), read_buf); -} - -TEST_F(ForkTest, SigAltStack) { - std::vector<char> stack_mem(SIGSTKSZ); - stack_t stack = {}; - stack.ss_size = SIGSTKSZ; - stack.ss_sp = stack_mem.data(); - ASSERT_THAT(sigaltstack(&stack, nullptr), SyscallSucceeds()); - - pid_t child = Fork(); - - if (child == 0) { - stack_t oss = {}; - TEST_PCHECK(sigaltstack(nullptr, &oss) == 0); - MaybeSave(); - - TEST_CHECK((oss.ss_flags & SS_DISABLE) == 0); - TEST_CHECK(oss.ss_size == SIGSTKSZ); - TEST_CHECK(oss.ss_sp == stack.ss_sp); - - Exit(0); - } - EXPECT_THAT(Wait(child), SyscallSucceedsWithValue(0)); -} - -TEST_F(ForkTest, Affinity) { - // Make a non-default cpumask. - cpu_set_t parent_mask; - EXPECT_THAT(sched_getaffinity(/*pid=*/0, sizeof(cpu_set_t), &parent_mask), - SyscallSucceeds()); - // Knock out the lowest bit. - for (unsigned int n = 0; n < CPU_SETSIZE; n++) { - if (CPU_ISSET(n, &parent_mask)) { - CPU_CLR(n, &parent_mask); - break; - } - } - EXPECT_THAT(sched_setaffinity(/*pid=*/0, sizeof(cpu_set_t), &parent_mask), - SyscallSucceeds()); - - pid_t child = Fork(); - if (child == 0) { - cpu_set_t child_mask; - - int ret = sched_getaffinity(/*pid=*/0, sizeof(cpu_set_t), &child_mask); - MaybeSave(); - if (ret < 0) { - Exit(-ret); - } - - TEST_CHECK(CPU_EQUAL(&child_mask, &parent_mask)); - - Exit(0); - } - - EXPECT_THAT(Wait(child), SyscallSucceedsWithValue(0)); -} - -TEST(CloneTest, NewUserNamespacePermitsAllOtherNamespaces) { - // "If CLONE_NEWUSER is specified along with other CLONE_NEW* flags in a - // single clone(2) or unshare(2) call, the user namespace is guaranteed to be - // created first, giving the child (clone(2)) or caller (unshare(2)) - // privileges over the remaining namespaces created by the call. Thus, it is - // possible for an unprivileged caller to specify this combination of flags." - // - user_namespaces(7) - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(CanCreateUserNamespace())); - Mapping child_stack = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE)); - int child_pid; - // We only test with CLONE_NEWIPC, CLONE_NEWNET, and CLONE_NEWUTS since these - // namespaces were implemented in Linux before user namespaces. - ASSERT_THAT( - child_pid = clone( - +[](void*) { return 0; }, - reinterpret_cast<void*>(child_stack.addr() + kPageSize), - CLONE_NEWUSER | CLONE_NEWIPC | CLONE_NEWNET | CLONE_NEWUTS | SIGCHLD, - /* arg = */ nullptr), - SyscallSucceeds()); - - int status; - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << "status = " << status; -} - -#ifdef __x86_64__ -// Clone with CLONE_SETTLS and a non-canonical TLS address is rejected. -TEST(CloneTest, NonCanonicalTLS) { - constexpr uintptr_t kNonCanonical = 1ull << 48; - - // We need a valid address for the stack pointer. We'll never actually execute - // on this. - char stack; - - EXPECT_THAT(syscall(__NR_clone, SIGCHLD | CLONE_SETTLS, &stack, nullptr, - nullptr, kNonCanonical), - SyscallFailsWithErrno(EPERM)); -} -#endif - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/fpsig_fork.cc b/test/syscalls/linux/fpsig_fork.cc deleted file mode 100644 index a346f1f00..000000000 --- a/test/syscalls/linux/fpsig_fork.cc +++ /dev/null @@ -1,105 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// This test verifies that fork(2) in a signal handler will correctly -// restore floating point state after the signal handler returns in both -// the child and parent. -#include <sys/time.h> - -#include "gtest/gtest.h" -#include "test/util/logging.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -#define GET_XMM(__var, __xmm) \ - asm volatile("movq %%" #__xmm ", %0" : "=r"(__var)) -#define SET_XMM(__var, __xmm) asm volatile("movq %0, %%" #__xmm : : "r"(__var)) - -int parent, child; - -void sigusr1(int s, siginfo_t* siginfo, void* _uc) { - // Fork and clobber %xmm0. The fpstate should be restored by sigreturn(2) - // in both parent and child. - child = fork(); - TEST_CHECK_MSG(child >= 0, "fork failed"); - - uint64_t val = SIGUSR1; - SET_XMM(val, xmm0); -} - -TEST(FPSigTest, Fork) { - parent = getpid(); - pid_t parent_tid = gettid(); - - struct sigaction sa = {}; - sigemptyset(&sa.sa_mask); - sa.sa_flags = SA_SIGINFO; - sa.sa_sigaction = sigusr1; - ASSERT_THAT(sigaction(SIGUSR1, &sa, nullptr), SyscallSucceeds()); - - // The amd64 ABI specifies that the XMM register set is caller-saved. This - // implies that if there is any function call between SET_XMM and GET_XMM the - // compiler might save/restore xmm0 implicitly. This defeats the entire - // purpose of the test which is to verify that fpstate is restored by - // sigreturn(2). - // - // This is the reason why 'tgkill(getpid(), gettid(), SIGUSR1)' is implemented - // in inline assembly below. - // - // If the OS is broken and registers are clobbered by the child, using tgkill - // to signal the current thread increases the likelihood that this thread will - // be the one clobbered. - - uint64_t expected = 0xdeadbeeffacefeed; - SET_XMM(expected, xmm0); - - asm volatile( - "movl %[killnr], %%eax;" - "movl %[parent], %%edi;" - "movl %[tid], %%esi;" - "movl %[sig], %%edx;" - "syscall;" - : - : [ killnr ] "i"(__NR_tgkill), [ parent ] "rm"(parent), - [ tid ] "rm"(parent_tid), [ sig ] "i"(SIGUSR1) - : "rax", "rdi", "rsi", "rdx", - // Clobbered by syscall. - "rcx", "r11"); - - uint64_t got; - GET_XMM(got, xmm0); - - if (getpid() == parent) { // Parent. - int status; - ASSERT_THAT(waitpid(child, &status, 0), SyscallSucceedsWithValue(child)); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0); - } - - // TEST_CHECK_MSG since this may run in the child. - TEST_CHECK_MSG(expected == got, "Bad xmm0 value"); - - if (getpid() != parent) { // Child. - _exit(0); - } -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/fpsig_nested.cc b/test/syscalls/linux/fpsig_nested.cc deleted file mode 100644 index c476a8e7a..000000000 --- a/test/syscalls/linux/fpsig_nested.cc +++ /dev/null @@ -1,134 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// This program verifies that application floating point state is restored -// correctly after a signal handler returns. It also verifies that this works -// with nested signals. -#include <sys/time.h> - -#include "gtest/gtest.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -#define GET_XMM(__var, __xmm) \ - asm volatile("movq %%" #__xmm ", %0" : "=r"(__var)) -#define SET_XMM(__var, __xmm) asm volatile("movq %0, %%" #__xmm : : "r"(__var)) - -int pid; -int tid; - -volatile uint64_t entryxmm[2] = {~0UL, ~0UL}; -volatile uint64_t exitxmm[2]; - -void sigusr2(int s, siginfo_t* siginfo, void* _uc) { - uint64_t val = SIGUSR2; - - // Record the value of %xmm0 on entry and then clobber it. - GET_XMM(entryxmm[1], xmm0); - SET_XMM(val, xmm0); - GET_XMM(exitxmm[1], xmm0); -} - -void sigusr1(int s, siginfo_t* siginfo, void* _uc) { - uint64_t val = SIGUSR1; - - // Record the value of %xmm0 on entry and then clobber it. - GET_XMM(entryxmm[0], xmm0); - SET_XMM(val, xmm0); - - // Send a SIGUSR2 to ourself. The signal mask is configured such that - // the SIGUSR2 handler will run before this handler returns. - asm volatile( - "movl %[killnr], %%eax;" - "movl %[pid], %%edi;" - "movl %[tid], %%esi;" - "movl %[sig], %%edx;" - "syscall;" - : - : [ killnr ] "i"(__NR_tgkill), [ pid ] "rm"(pid), [ tid ] "rm"(tid), - [ sig ] "i"(SIGUSR2) - : "rax", "rdi", "rsi", "rdx", - // Clobbered by syscall. - "rcx", "r11"); - - // Record value of %xmm0 again to verify that the nested signal handler - // does not clobber it. - GET_XMM(exitxmm[0], xmm0); -} - -TEST(FPSigTest, NestedSignals) { - pid = getpid(); - tid = gettid(); - - struct sigaction sa = {}; - sigemptyset(&sa.sa_mask); - sa.sa_flags = SA_SIGINFO; - sa.sa_sigaction = sigusr1; - ASSERT_THAT(sigaction(SIGUSR1, &sa, nullptr), SyscallSucceeds()); - - sa.sa_sigaction = sigusr2; - ASSERT_THAT(sigaction(SIGUSR2, &sa, nullptr), SyscallSucceeds()); - - // The amd64 ABI specifies that the XMM register set is caller-saved. This - // implies that if there is any function call between SET_XMM and GET_XMM the - // compiler might save/restore xmm0 implicitly. This defeats the entire - // purpose of the test which is to verify that fpstate is restored by - // sigreturn(2). - // - // This is the reason why 'tgkill(getpid(), gettid(), SIGUSR1)' is implemented - // in inline assembly below. - // - // If the OS is broken and registers are clobbered by the signal, using tgkill - // to signal the current thread ensures that this is the clobbered thread. - - uint64_t expected = 0xdeadbeeffacefeed; - SET_XMM(expected, xmm0); - - asm volatile( - "movl %[killnr], %%eax;" - "movl %[pid], %%edi;" - "movl %[tid], %%esi;" - "movl %[sig], %%edx;" - "syscall;" - : - : [ killnr ] "i"(__NR_tgkill), [ pid ] "rm"(pid), [ tid ] "rm"(tid), - [ sig ] "i"(SIGUSR1) - : "rax", "rdi", "rsi", "rdx", - // Clobbered by syscall. - "rcx", "r11"); - - uint64_t got; - GET_XMM(got, xmm0); - - // - // The checks below verifies the following: - // - signal handlers must called with a clean fpu state. - // - sigreturn(2) must restore fpstate of the interrupted context. - // - EXPECT_EQ(expected, got); - EXPECT_EQ(entryxmm[0], 0); - EXPECT_EQ(entryxmm[1], 0); - EXPECT_EQ(exitxmm[0], SIGUSR1); - EXPECT_EQ(exitxmm[1], SIGUSR2); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/fsync.cc b/test/syscalls/linux/fsync.cc deleted file mode 100644 index e7e057f06..000000000 --- a/test/syscalls/linux/fsync.cc +++ /dev/null @@ -1,58 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <fcntl.h> -#include <stdio.h> -#include <unistd.h> - -#include <string> - -#include "gtest/gtest.h" -#include "test/util/file_descriptor.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -TEST(FsyncTest, TempFileSucceeds) { - auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - auto fd = ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR, 0666)); - const std::string data = "some data to sync"; - EXPECT_THAT(write(fd.get(), data.c_str(), data.size()), - SyscallSucceedsWithValue(data.size())); - EXPECT_THAT(fsync(fd.get()), SyscallSucceeds()); -} - -TEST(FsyncTest, TempDirSucceeds) { - auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - auto fd = ASSERT_NO_ERRNO_AND_VALUE(Open(dir.path(), O_RDONLY | O_DIRECTORY)); - EXPECT_THAT(fsync(fd.get()), SyscallSucceeds()); -} - -TEST(FsyncTest, CannotFsyncOnUnopenedFd) { - auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - int fd; - ASSERT_THAT(fd = open(file.path().c_str(), O_RDONLY), SyscallSucceeds()); - ASSERT_THAT(close(fd), SyscallSucceeds()); - - // fd is now invalid. - EXPECT_THAT(fsync(fd), SyscallFailsWithErrno(EBADF)); -} -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/futex.cc b/test/syscalls/linux/futex.cc deleted file mode 100644 index 40c80a6e1..000000000 --- a/test/syscalls/linux/futex.cc +++ /dev/null @@ -1,742 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <linux/futex.h> -#include <linux/types.h> -#include <sys/syscall.h> -#include <sys/time.h> -#include <sys/types.h> -#include <unistd.h> - -#include <algorithm> -#include <atomic> -#include <memory> -#include <vector> - -#include "gtest/gtest.h" -#include "absl/memory/memory.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/util/cleanup.h" -#include "test/util/file_descriptor.h" -#include "test/util/memory_util.h" -#include "test/util/save_util.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" -#include "test/util/time_util.h" -#include "test/util/timer_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -// Amount of time we wait for threads doing futex_wait to start running before -// doing futex_wake. -constexpr auto kWaiterStartupDelay = absl::Seconds(3); - -// Default timeout for waiters in tests where we expect a futex_wake to be -// ineffective. -constexpr auto kIneffectiveWakeTimeout = absl::Seconds(6); - -static_assert(kWaiterStartupDelay < kIneffectiveWakeTimeout, - "futex_wait will time out before futex_wake is called"); - -int futex_wait(bool priv, std::atomic<int>* uaddr, int val, - absl::Duration timeout = absl::InfiniteDuration()) { - int op = FUTEX_WAIT; - if (priv) { - op |= FUTEX_PRIVATE_FLAG; - } - - if (timeout == absl::InfiniteDuration()) { - return RetryEINTR(syscall)(SYS_futex, uaddr, op, val, nullptr); - } - - // FUTEX_WAIT doesn't adjust the timeout if it returns EINTR, so we have to do - // so. - while (true) { - auto const timeout_ts = absl::ToTimespec(timeout); - MonotonicTimer timer; - timer.Start(); - int const ret = syscall(SYS_futex, uaddr, op, val, &timeout_ts); - if (ret != -1 || errno != EINTR) { - return ret; - } - timeout = std::max(timeout - timer.Duration(), absl::ZeroDuration()); - } -} - -int futex_wait_bitset(bool priv, std::atomic<int>* uaddr, int val, int bitset, - absl::Time deadline = absl::InfiniteFuture()) { - int op = FUTEX_WAIT_BITSET | FUTEX_CLOCK_REALTIME; - if (priv) { - op |= FUTEX_PRIVATE_FLAG; - } - - auto const deadline_ts = absl::ToTimespec(deadline); - return RetryEINTR(syscall)( - SYS_futex, uaddr, op, val, - deadline == absl::InfiniteFuture() ? nullptr : &deadline_ts, nullptr, - bitset); -} - -int futex_wake(bool priv, std::atomic<int>* uaddr, int count) { - int op = FUTEX_WAKE; - if (priv) { - op |= FUTEX_PRIVATE_FLAG; - } - return syscall(SYS_futex, uaddr, op, count); -} - -int futex_wake_bitset(bool priv, std::atomic<int>* uaddr, int count, - int bitset) { - int op = FUTEX_WAKE_BITSET; - if (priv) { - op |= FUTEX_PRIVATE_FLAG; - } - return syscall(SYS_futex, uaddr, op, count, nullptr, nullptr, bitset); -} - -int futex_wake_op(bool priv, std::atomic<int>* uaddr1, std::atomic<int>* uaddr2, - int nwake1, int nwake2, uint32_t sub_op) { - int op = FUTEX_WAKE_OP; - if (priv) { - op |= FUTEX_PRIVATE_FLAG; - } - return syscall(SYS_futex, uaddr1, op, nwake1, nwake2, uaddr2, sub_op); -} - -int futex_lock_pi(bool priv, std::atomic<int>* uaddr) { - int op = FUTEX_LOCK_PI; - if (priv) { - op |= FUTEX_PRIVATE_FLAG; - } - int zero = 0; - if (uaddr->compare_exchange_strong(zero, gettid())) { - return 0; - } - return RetryEINTR(syscall)(SYS_futex, uaddr, op, nullptr, nullptr); -} - -int futex_trylock_pi(bool priv, std::atomic<int>* uaddr) { - int op = FUTEX_TRYLOCK_PI; - if (priv) { - op |= FUTEX_PRIVATE_FLAG; - } - int zero = 0; - if (uaddr->compare_exchange_strong(zero, gettid())) { - return 0; - } - return RetryEINTR(syscall)(SYS_futex, uaddr, op, nullptr, nullptr); -} - -int futex_unlock_pi(bool priv, std::atomic<int>* uaddr) { - int op = FUTEX_UNLOCK_PI; - if (priv) { - op |= FUTEX_PRIVATE_FLAG; - } - int tid = gettid(); - if (uaddr->compare_exchange_strong(tid, 0)) { - return 0; - } - return RetryEINTR(syscall)(SYS_futex, uaddr, op, nullptr, nullptr); -} - -// Fixture for futex tests parameterized by whether to use private or shared -// futexes. -class PrivateAndSharedFutexTest : public ::testing::TestWithParam<bool> { - protected: - bool IsPrivate() const { return GetParam(); } - int PrivateFlag() const { return IsPrivate() ? FUTEX_PRIVATE_FLAG : 0; } -}; - -// FUTEX_WAIT with 0 timeout does not block. -TEST_P(PrivateAndSharedFutexTest, Wait_ZeroTimeout) { - struct timespec timeout = {}; - - // Don't use the futex_wait helper because it adjusts timeout. - int a = 1; - EXPECT_THAT(syscall(SYS_futex, &a, FUTEX_WAIT | PrivateFlag(), a, &timeout), - SyscallFailsWithErrno(ETIMEDOUT)); -} - -TEST_P(PrivateAndSharedFutexTest, Wait_Timeout) { - std::atomic<int> a = ATOMIC_VAR_INIT(1); - - MonotonicTimer timer; - timer.Start(); - constexpr absl::Duration kTimeout = absl::Seconds(1); - EXPECT_THAT(futex_wait(IsPrivate(), &a, a, kTimeout), - SyscallFailsWithErrno(ETIMEDOUT)); - EXPECT_GE(timer.Duration(), kTimeout); -} - -TEST_P(PrivateAndSharedFutexTest, Wait_BitsetTimeout) { - std::atomic<int> a = ATOMIC_VAR_INIT(1); - - MonotonicTimer timer; - timer.Start(); - constexpr absl::Duration kTimeout = absl::Seconds(1); - EXPECT_THAT( - futex_wait_bitset(IsPrivate(), &a, a, 0xffffffff, absl::Now() + kTimeout), - SyscallFailsWithErrno(ETIMEDOUT)); - EXPECT_GE(timer.Duration(), kTimeout); -} - -TEST_P(PrivateAndSharedFutexTest, WaitBitset_NegativeTimeout) { - std::atomic<int> a = ATOMIC_VAR_INIT(1); - - MonotonicTimer timer; - timer.Start(); - EXPECT_THAT(futex_wait_bitset(IsPrivate(), &a, a, 0xffffffff, - absl::Now() - absl::Seconds(1)), - SyscallFailsWithErrno(ETIMEDOUT)); -} - -TEST_P(PrivateAndSharedFutexTest, Wait_WrongVal) { - std::atomic<int> a = ATOMIC_VAR_INIT(1); - EXPECT_THAT(futex_wait(IsPrivate(), &a, a + 1), - SyscallFailsWithErrno(EAGAIN)); -} - -TEST_P(PrivateAndSharedFutexTest, Wait_ZeroBitset) { - std::atomic<int> a = ATOMIC_VAR_INIT(1); - EXPECT_THAT(futex_wait_bitset(IsPrivate(), &a, a, 0), - SyscallFailsWithErrno(EINVAL)); -} - -TEST_P(PrivateAndSharedFutexTest, Wake1_NoRandomSave) { - constexpr int kInitialValue = 1; - std::atomic<int> a = ATOMIC_VAR_INIT(kInitialValue); - - // Prevent save/restore from interrupting futex_wait, which will cause it to - // return EAGAIN instead of the expected result if futex_wait is restarted - // after we change the value of a below. - DisableSave ds; - ScopedThread thread([&] { - EXPECT_THAT(futex_wait(IsPrivate(), &a, kInitialValue), - SyscallSucceedsWithValue(0)); - }); - absl::SleepFor(kWaiterStartupDelay); - - // Change a so that if futex_wake happens before futex_wait, the latter - // returns EAGAIN instead of hanging the test. - a.fetch_add(1); - EXPECT_THAT(futex_wake(IsPrivate(), &a, 1), SyscallSucceedsWithValue(1)); -} - -TEST_P(PrivateAndSharedFutexTest, Wake0_NoRandomSave) { - constexpr int kInitialValue = 1; - std::atomic<int> a = ATOMIC_VAR_INIT(kInitialValue); - - // Prevent save/restore from interrupting futex_wait, which will cause it to - // return EAGAIN instead of the expected result if futex_wait is restarted - // after we change the value of a below. - DisableSave ds; - ScopedThread thread([&] { - EXPECT_THAT(futex_wait(IsPrivate(), &a, kInitialValue), - SyscallSucceedsWithValue(0)); - }); - absl::SleepFor(kWaiterStartupDelay); - - // Change a so that if futex_wake happens before futex_wait, the latter - // returns EAGAIN instead of hanging the test. - a.fetch_add(1); - // The Linux kernel wakes one waiter even if val is 0 or negative. - EXPECT_THAT(futex_wake(IsPrivate(), &a, 0), SyscallSucceedsWithValue(1)); -} - -TEST_P(PrivateAndSharedFutexTest, WakeAll_NoRandomSave) { - constexpr int kInitialValue = 1; - std::atomic<int> a = ATOMIC_VAR_INIT(kInitialValue); - - DisableSave ds; - constexpr int kThreads = 5; - std::vector<std::unique_ptr<ScopedThread>> threads; - threads.reserve(kThreads); - for (int i = 0; i < kThreads; i++) { - threads.push_back(absl::make_unique<ScopedThread>([&] { - EXPECT_THAT(futex_wait(IsPrivate(), &a, kInitialValue), - SyscallSucceeds()); - })); - } - absl::SleepFor(kWaiterStartupDelay); - - a.fetch_add(1); - EXPECT_THAT(futex_wake(IsPrivate(), &a, kThreads), - SyscallSucceedsWithValue(kThreads)); -} - -TEST_P(PrivateAndSharedFutexTest, WakeSome_NoRandomSave) { - constexpr int kInitialValue = 1; - std::atomic<int> a = ATOMIC_VAR_INIT(kInitialValue); - - DisableSave ds; - constexpr int kThreads = 5; - constexpr int kWokenThreads = 3; - static_assert(kWokenThreads < kThreads, - "can't wake more threads than are created"); - std::vector<std::unique_ptr<ScopedThread>> threads; - threads.reserve(kThreads); - std::vector<int> rets; - rets.reserve(kThreads); - std::vector<int> errs; - errs.reserve(kThreads); - for (int i = 0; i < kThreads; i++) { - rets.push_back(-1); - errs.push_back(0); - } - for (int i = 0; i < kThreads; i++) { - threads.push_back(absl::make_unique<ScopedThread>([&, i] { - rets[i] = - futex_wait(IsPrivate(), &a, kInitialValue, kIneffectiveWakeTimeout); - errs[i] = errno; - })); - } - absl::SleepFor(kWaiterStartupDelay); - - a.fetch_add(1); - EXPECT_THAT(futex_wake(IsPrivate(), &a, kWokenThreads), - SyscallSucceedsWithValue(kWokenThreads)); - - int woken = 0; - int timedout = 0; - for (int i = 0; i < kThreads; i++) { - threads[i]->Join(); - if (rets[i] == 0) { - woken++; - } else if (errs[i] == ETIMEDOUT) { - timedout++; - } else { - ADD_FAILURE() << " thread " << i << ": returned " << rets[i] << ", errno " - << errs[i]; - } - } - EXPECT_EQ(woken, kWokenThreads); - EXPECT_EQ(timedout, kThreads - kWokenThreads); -} - -TEST_P(PrivateAndSharedFutexTest, WaitBitset_Wake_NoRandomSave) { - constexpr int kInitialValue = 1; - std::atomic<int> a = ATOMIC_VAR_INIT(kInitialValue); - - DisableSave ds; - ScopedThread thread([&] { - EXPECT_THAT(futex_wait_bitset(IsPrivate(), &a, kInitialValue, 0b01001000), - SyscallSucceeds()); - }); - absl::SleepFor(kWaiterStartupDelay); - - a.fetch_add(1); - EXPECT_THAT(futex_wake(IsPrivate(), &a, 1), SyscallSucceedsWithValue(1)); -} - -TEST_P(PrivateAndSharedFutexTest, Wait_WakeBitset_NoRandomSave) { - constexpr int kInitialValue = 1; - std::atomic<int> a = ATOMIC_VAR_INIT(kInitialValue); - - DisableSave ds; - ScopedThread thread([&] { - EXPECT_THAT(futex_wait(IsPrivate(), &a, kInitialValue), SyscallSucceeds()); - }); - absl::SleepFor(kWaiterStartupDelay); - - a.fetch_add(1); - EXPECT_THAT(futex_wake_bitset(IsPrivate(), &a, 1, 0b01001000), - SyscallSucceedsWithValue(1)); -} - -TEST_P(PrivateAndSharedFutexTest, WaitBitset_WakeBitsetMatch_NoRandomSave) { - constexpr int kInitialValue = 1; - std::atomic<int> a = ATOMIC_VAR_INIT(kInitialValue); - - constexpr int kBitset = 0b01001000; - - DisableSave ds; - ScopedThread thread([&] { - EXPECT_THAT(futex_wait_bitset(IsPrivate(), &a, kInitialValue, kBitset), - SyscallSucceeds()); - }); - absl::SleepFor(kWaiterStartupDelay); - - a.fetch_add(1); - EXPECT_THAT(futex_wake_bitset(IsPrivate(), &a, 1, kBitset), - SyscallSucceedsWithValue(1)); -} - -TEST_P(PrivateAndSharedFutexTest, WaitBitset_WakeBitsetNoMatch_NoRandomSave) { - constexpr int kInitialValue = 1; - std::atomic<int> a = ATOMIC_VAR_INIT(kInitialValue); - - constexpr int kWaitBitset = 0b01000001; - constexpr int kWakeBitset = 0b00101000; - static_assert((kWaitBitset & kWakeBitset) == 0, - "futex_wake_bitset will wake waiter"); - - DisableSave ds; - ScopedThread thread([&] { - EXPECT_THAT(futex_wait_bitset(IsPrivate(), &a, kInitialValue, kWaitBitset, - absl::Now() + kIneffectiveWakeTimeout), - SyscallFailsWithErrno(ETIMEDOUT)); - }); - absl::SleepFor(kWaiterStartupDelay); - - a.fetch_add(1); - EXPECT_THAT(futex_wake_bitset(IsPrivate(), &a, 1, kWakeBitset), - SyscallSucceedsWithValue(0)); -} - -TEST_P(PrivateAndSharedFutexTest, WakeOpCondSuccess_NoRandomSave) { - constexpr int kInitialValue = 1; - std::atomic<int> a = ATOMIC_VAR_INIT(kInitialValue); - std::atomic<int> b = ATOMIC_VAR_INIT(kInitialValue); - - DisableSave ds; - ScopedThread thread_a([&] { - EXPECT_THAT(futex_wait(IsPrivate(), &a, kInitialValue), SyscallSucceeds()); - }); - ScopedThread thread_b([&] { - EXPECT_THAT(futex_wait(IsPrivate(), &b, kInitialValue), SyscallSucceeds()); - }); - absl::SleepFor(kWaiterStartupDelay); - - a.fetch_add(1); - b.fetch_add(1); - // This futex_wake_op should: - // - Wake 1 waiter on a unconditionally. - // - Wake 1 waiter on b if b == kInitialValue + 1, which it is. - // - Do "b += 1". - EXPECT_THAT(futex_wake_op(IsPrivate(), &a, &b, 1, 1, - FUTEX_OP(FUTEX_OP_ADD, 1, FUTEX_OP_CMP_EQ, - (kInitialValue + 1))), - SyscallSucceedsWithValue(2)); - EXPECT_EQ(b, kInitialValue + 2); -} - -TEST_P(PrivateAndSharedFutexTest, WakeOpCondFailure_NoRandomSave) { - constexpr int kInitialValue = 1; - std::atomic<int> a = ATOMIC_VAR_INIT(kInitialValue); - std::atomic<int> b = ATOMIC_VAR_INIT(kInitialValue); - - DisableSave ds; - ScopedThread thread_a([&] { - EXPECT_THAT(futex_wait(IsPrivate(), &a, kInitialValue), SyscallSucceeds()); - }); - ScopedThread thread_b([&] { - EXPECT_THAT( - futex_wait(IsPrivate(), &b, kInitialValue, kIneffectiveWakeTimeout), - SyscallFailsWithErrno(ETIMEDOUT)); - }); - absl::SleepFor(kWaiterStartupDelay); - - a.fetch_add(1); - b.fetch_add(1); - // This futex_wake_op should: - // - Wake 1 waiter on a unconditionally. - // - Wake 1 waiter on b if b == kInitialValue - 1, which it isn't. - // - Do "b += 1". - EXPECT_THAT(futex_wake_op(IsPrivate(), &a, &b, 1, 1, - FUTEX_OP(FUTEX_OP_ADD, 1, FUTEX_OP_CMP_EQ, - (kInitialValue - 1))), - SyscallSucceedsWithValue(1)); - EXPECT_EQ(b, kInitialValue + 2); -} - -TEST_P(PrivateAndSharedFutexTest, NoWakeInterprocessPrivateAnon_NoRandomSave) { - auto const mapping = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE)); - auto const ptr = static_cast<std::atomic<int>*>(mapping.ptr()); - constexpr int kInitialValue = 1; - ptr->store(kInitialValue); - - DisableSave ds; - pid_t const child_pid = fork(); - if (child_pid == 0) { - TEST_PCHECK(futex_wait(IsPrivate(), ptr, kInitialValue, - kIneffectiveWakeTimeout) == -1 && - errno == ETIMEDOUT); - _exit(0); - } - ASSERT_THAT(child_pid, SyscallSucceeds()); - absl::SleepFor(kWaiterStartupDelay); - - EXPECT_THAT(futex_wake(IsPrivate(), ptr, 1), SyscallSucceedsWithValue(0)); - - int status; - ASSERT_THAT(RetryEINTR(waitpid)(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << " status " << status; -} - -TEST_P(PrivateAndSharedFutexTest, WakeAfterCOWBreak_NoRandomSave) { - // Use a futex on a non-stack mapping so we can be sure that the child process - // below isn't the one that breaks copy-on-write. - auto const mapping = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE)); - auto const ptr = static_cast<std::atomic<int>*>(mapping.ptr()); - constexpr int kInitialValue = 1; - ptr->store(kInitialValue); - - DisableSave ds; - ScopedThread thread([&] { - EXPECT_THAT(futex_wait(IsPrivate(), ptr, kInitialValue), SyscallSucceeds()); - }); - absl::SleepFor(kWaiterStartupDelay); - - pid_t const child_pid = fork(); - if (child_pid == 0) { - // Wait to be killed by the parent. - while (true) pause(); - } - ASSERT_THAT(child_pid, SyscallSucceeds()); - auto cleanup_child = Cleanup([&] { - EXPECT_THAT(kill(child_pid, SIGKILL), SyscallSucceeds()); - int status; - ASSERT_THAT(RetryEINTR(waitpid)(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFSIGNALED(status) && WTERMSIG(status) == SIGKILL) - << " status " << status; - }); - - // In addition to preventing a late futex_wait from sleeping, this breaks - // copy-on-write on the mapped page. - ptr->fetch_add(1); - EXPECT_THAT(futex_wake(IsPrivate(), ptr, 1), SyscallSucceedsWithValue(1)); -} - -TEST_P(PrivateAndSharedFutexTest, WakeWrongKind_NoRandomSave) { - constexpr int kInitialValue = 1; - std::atomic<int> a = ATOMIC_VAR_INIT(kInitialValue); - - DisableSave ds; - ScopedThread thread([&] { - EXPECT_THAT( - futex_wait(IsPrivate(), &a, kInitialValue, kIneffectiveWakeTimeout), - SyscallFailsWithErrno(ETIMEDOUT)); - }); - absl::SleepFor(kWaiterStartupDelay); - - a.fetch_add(1); - // The value of priv passed to futex_wake is the opposite of that passed to - // the futex_waiter; we expect this not to wake the waiter. - EXPECT_THAT(futex_wake(!IsPrivate(), &a, 1), SyscallSucceedsWithValue(0)); -} - -INSTANTIATE_TEST_SUITE_P(SharedPrivate, PrivateAndSharedFutexTest, - ::testing::Bool()); - -// Passing null as the address only works for private futexes. - -TEST(PrivateFutexTest, WakeOp0Set) { - std::atomic<int> a = ATOMIC_VAR_INIT(1); - - int futex_op = FUTEX_OP(FUTEX_OP_SET, 2, 0, 0); - EXPECT_THAT(futex_wake_op(true, nullptr, &a, 0, 0, futex_op), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(a, 2); -} - -TEST(PrivateFutexTest, WakeOp0Add) { - std::atomic<int> a = ATOMIC_VAR_INIT(1); - int futex_op = FUTEX_OP(FUTEX_OP_ADD, 1, 0, 0); - EXPECT_THAT(futex_wake_op(true, nullptr, &a, 0, 0, futex_op), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(a, 2); -} - -TEST(PrivateFutexTest, WakeOp0Or) { - std::atomic<int> a = ATOMIC_VAR_INIT(0b01); - int futex_op = FUTEX_OP(FUTEX_OP_OR, 0b10, 0, 0); - EXPECT_THAT(futex_wake_op(true, nullptr, &a, 0, 0, futex_op), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(a, 0b11); -} - -TEST(PrivateFutexTest, WakeOp0Andn) { - std::atomic<int> a = ATOMIC_VAR_INIT(0b11); - int futex_op = FUTEX_OP(FUTEX_OP_ANDN, 0b10, 0, 0); - EXPECT_THAT(futex_wake_op(true, nullptr, &a, 0, 0, futex_op), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(a, 0b01); -} - -TEST(PrivateFutexTest, WakeOp0Xor) { - std::atomic<int> a = ATOMIC_VAR_INIT(0b1010); - int futex_op = FUTEX_OP(FUTEX_OP_XOR, 0b1100, 0, 0); - EXPECT_THAT(futex_wake_op(true, nullptr, &a, 0, 0, futex_op), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(a, 0b0110); -} - -TEST(SharedFutexTest, WakeInterprocessSharedAnon_NoRandomSave) { - auto const mapping = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(kPageSize, PROT_READ | PROT_WRITE, MAP_SHARED)); - auto const ptr = static_cast<std::atomic<int>*>(mapping.ptr()); - constexpr int kInitialValue = 1; - ptr->store(kInitialValue); - - DisableSave ds; - pid_t const child_pid = fork(); - if (child_pid == 0) { - TEST_PCHECK(futex_wait(false, ptr, kInitialValue) == 0); - _exit(0); - } - ASSERT_THAT(child_pid, SyscallSucceeds()); - auto kill_child = Cleanup( - [&] { EXPECT_THAT(kill(child_pid, SIGKILL), SyscallSucceeds()); }); - absl::SleepFor(kWaiterStartupDelay); - - ptr->fetch_add(1); - // This is an ASSERT so that if it fails, we immediately abort the test (and - // kill the subprocess). - ASSERT_THAT(futex_wake(false, ptr, 1), SyscallSucceedsWithValue(1)); - - kill_child.Release(); - int status; - ASSERT_THAT(RetryEINTR(waitpid)(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << " status " << status; -} - -TEST(SharedFutexTest, WakeInterprocessFile_NoRandomSave) { - auto const file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - ASSERT_THAT(truncate(file.path().c_str(), kPageSize), SyscallSucceeds()); - auto const fd = ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR)); - auto const mapping = ASSERT_NO_ERRNO_AND_VALUE(Mmap( - nullptr, kPageSize, PROT_READ | PROT_WRITE, MAP_SHARED, fd.get(), 0)); - auto const ptr = static_cast<std::atomic<int>*>(mapping.ptr()); - constexpr int kInitialValue = 1; - ptr->store(kInitialValue); - - DisableSave ds; - pid_t const child_pid = fork(); - if (child_pid == 0) { - TEST_PCHECK(futex_wait(false, ptr, kInitialValue) == 0); - _exit(0); - } - ASSERT_THAT(child_pid, SyscallSucceeds()); - auto kill_child = Cleanup( - [&] { EXPECT_THAT(kill(child_pid, SIGKILL), SyscallSucceeds()); }); - absl::SleepFor(kWaiterStartupDelay); - - ptr->fetch_add(1); - // This is an ASSERT so that if it fails, we immediately abort the test (and - // kill the subprocess). - ASSERT_THAT(futex_wake(false, ptr, 1), SyscallSucceedsWithValue(1)); - - kill_child.Release(); - int status; - ASSERT_THAT(RetryEINTR(waitpid)(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << " status " << status; -} - -TEST_P(PrivateAndSharedFutexTest, PIBasic) { - std::atomic<int> a = ATOMIC_VAR_INIT(0); - - ASSERT_THAT(futex_lock_pi(IsPrivate(), &a), SyscallSucceeds()); - EXPECT_EQ(a.load(), gettid()); - EXPECT_THAT(futex_lock_pi(IsPrivate(), &a), SyscallFailsWithErrno(EDEADLK)); - - ASSERT_THAT(futex_unlock_pi(IsPrivate(), &a), SyscallSucceeds()); - EXPECT_EQ(a.load(), 0); - EXPECT_THAT(futex_unlock_pi(IsPrivate(), &a), SyscallFailsWithErrno(EPERM)); -} - -TEST_P(PrivateAndSharedFutexTest, PIConcurrency_NoRandomSave) { - DisableSave ds; // Too many syscalls. - - std::atomic<int> a = ATOMIC_VAR_INIT(0); - const bool is_priv = IsPrivate(); - - std::unique_ptr<ScopedThread> threads[100]; - for (size_t i = 0; i < ABSL_ARRAYSIZE(threads); ++i) { - threads[i] = absl::make_unique<ScopedThread>([is_priv, &a] { - for (size_t j = 0; j < 10; ++j) { - ASSERT_THAT(futex_lock_pi(is_priv, &a), SyscallSucceeds()); - EXPECT_EQ(a.load() & FUTEX_TID_MASK, gettid()); - SleepSafe(absl::Milliseconds(5)); - ASSERT_THAT(futex_unlock_pi(is_priv, &a), SyscallSucceeds()); - } - }); - } -} - -TEST_P(PrivateAndSharedFutexTest, PIWaiters) { - std::atomic<int> a = ATOMIC_VAR_INIT(0); - const bool is_priv = IsPrivate(); - - ASSERT_THAT(futex_lock_pi(is_priv, &a), SyscallSucceeds()); - EXPECT_EQ(a.load(), gettid()); - - ScopedThread th([is_priv, &a] { - ASSERT_THAT(futex_lock_pi(is_priv, &a), SyscallSucceeds()); - ASSERT_THAT(futex_unlock_pi(is_priv, &a), SyscallSucceeds()); - }); - - // Wait until the thread blocks on the futex, setting the waiters bit. - auto start = absl::Now(); - while (a.load() != (FUTEX_WAITERS | gettid())) { - ASSERT_LT(absl::Now() - start, absl::Seconds(5)); - absl::SleepFor(absl::Milliseconds(100)); - } - ASSERT_THAT(futex_unlock_pi(is_priv, &a), SyscallSucceeds()); -} - -TEST_P(PrivateAndSharedFutexTest, PITryLock) { - std::atomic<int> a = ATOMIC_VAR_INIT(0); - const bool is_priv = IsPrivate(); - - ASSERT_THAT(futex_trylock_pi(IsPrivate(), &a), SyscallSucceeds()); - EXPECT_EQ(a.load(), gettid()); - - EXPECT_THAT(futex_trylock_pi(is_priv, &a), SyscallFailsWithErrno(EDEADLK)); - ScopedThread th([is_priv, &a] { - EXPECT_THAT(futex_trylock_pi(is_priv, &a), SyscallFailsWithErrno(EAGAIN)); - }); - th.Join(); - - ASSERT_THAT(futex_unlock_pi(IsPrivate(), &a), SyscallSucceeds()); -} - -TEST_P(PrivateAndSharedFutexTest, PITryLockConcurrency_NoRandomSave) { - DisableSave ds; // Too many syscalls. - - std::atomic<int> a = ATOMIC_VAR_INIT(0); - const bool is_priv = IsPrivate(); - - std::unique_ptr<ScopedThread> threads[10]; - for (size_t i = 0; i < ABSL_ARRAYSIZE(threads); ++i) { - threads[i] = absl::make_unique<ScopedThread>([is_priv, &a] { - for (size_t j = 0; j < 10;) { - if (futex_trylock_pi(is_priv, &a) == 0) { - ++j; - EXPECT_EQ(a.load() & FUTEX_TID_MASK, gettid()); - SleepSafe(absl::Milliseconds(5)); - ASSERT_THAT(futex_unlock_pi(is_priv, &a), SyscallSucceeds()); - } - } - }); - } -} - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/getcpu.cc b/test/syscalls/linux/getcpu.cc deleted file mode 100644 index f4d94bd6a..000000000 --- a/test/syscalls/linux/getcpu.cc +++ /dev/null @@ -1,40 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <sched.h> - -#include "gtest/gtest.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -TEST(GetcpuTest, IsValidCpuStress) { - const int num_cpus = NumCPUs(); - absl::Time deadline = absl::Now() + absl::Seconds(10); - while (absl::Now() < deadline) { - int cpu; - ASSERT_THAT(cpu = sched_getcpu(), SyscallSucceeds()); - ASSERT_LT(cpu, num_cpus); - } -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/getdents.cc b/test/syscalls/linux/getdents.cc deleted file mode 100644 index b147d6181..000000000 --- a/test/syscalls/linux/getdents.cc +++ /dev/null @@ -1,539 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <dirent.h> -#include <errno.h> -#include <fcntl.h> -#include <stddef.h> -#include <stdint.h> -#include <stdio.h> -#include <string.h> -#include <sys/mman.h> -#include <sys/types.h> -#include <syscall.h> -#include <unistd.h> - -#include <map> -#include <string> -#include <unordered_map> -#include <unordered_set> -#include <utility> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "absl/strings/numbers.h" -#include "absl/strings/str_cat.h" -#include "test/util/eventfd_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/fs_util.h" -#include "test/util/posix_error.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -using ::testing::Contains; -using ::testing::IsEmpty; -using ::testing::IsSupersetOf; -using ::testing::Not; -using ::testing::NotNull; - -namespace gvisor { -namespace testing { - -namespace { - -// New Linux dirent format. -struct linux_dirent64 { - uint64_t d_ino; // Inode number - int64_t d_off; // Offset to next linux_dirent64 - unsigned short d_reclen; // NOLINT, Length of this linux_dirent64 - unsigned char d_type; // NOLINT, File type - char d_name[0]; // Filename (null-terminated) -}; - -// Old Linux dirent format. -struct linux_dirent { - unsigned long d_ino; // NOLINT - unsigned long d_off; // NOLINT - unsigned short d_reclen; // NOLINT - char d_name[0]; -}; - -// Wraps a buffer to provide a set of dirents. -// T is the underlying dirent type. -template <typename T> -class DirentBuffer { - public: - // DirentBuffer manages the buffer. - explicit DirentBuffer(size_t size) - : managed_(true), actual_size_(size), reported_size_(size) { - data_ = new char[actual_size_]; - } - - // The buffer is managed externally. - DirentBuffer(char* data, size_t actual_size, size_t reported_size) - : managed_(false), - data_(data), - actual_size_(actual_size), - reported_size_(reported_size) {} - - ~DirentBuffer() { - if (managed_) { - delete[] data_; - } - } - - T* Data() { return reinterpret_cast<T*>(data_); } - - T* Start(size_t read) { - read_ = read; - if (read_) { - return Data(); - } else { - return nullptr; - } - } - - T* Current() { return reinterpret_cast<T*>(&data_[off_]); } - - T* Next() { - size_t new_off = off_ + Current()->d_reclen; - if (new_off >= read_ || new_off >= actual_size_) { - return nullptr; - } - - off_ = new_off; - return Current(); - } - - size_t Size() { return reported_size_; } - - void Reset() { - off_ = 0; - read_ = 0; - memset(data_, 0, actual_size_); - } - - private: - bool managed_; - char* data_; - size_t actual_size_; - size_t reported_size_; - - size_t off_ = 0; - - size_t read_ = 0; -}; - -// Test for getdents/getdents64. -// T is the Linux dirent type. -template <typename T> -class GetdentsTest : public ::testing::Test { - public: - using LinuxDirentType = T; - using DirentBufferType = DirentBuffer<T>; - - protected: - void SetUp() override { - dir_ = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - fd_ = ASSERT_NO_ERRNO_AND_VALUE(Open(dir_.path(), O_RDONLY | O_DIRECTORY)); - } - - // Must be overridden with explicit specialization. See below. - int SyscallNum(); - - int Getdents(LinuxDirentType* dirp, unsigned int count) { - return RetryEINTR(syscall)(SyscallNum(), fd_.get(), dirp, count); - } - - // Fill directory with num files, named by number starting at 0. - void FillDirectory(size_t num) { - for (size_t i = 0; i < num; i++) { - auto name = JoinPath(dir_.path(), absl::StrCat(i)); - TEST_CHECK(CreateWithContents(name, "").ok()); - } - } - - // Fill directory with a given list of filenames. - void FillDirectoryWithFiles(const std::vector<std::string>& filenames) { - for (const auto& filename : filenames) { - auto name = JoinPath(dir_.path(), filename); - TEST_CHECK(CreateWithContents(name, "").ok()); - } - } - - // Seek to the start of the directory. - PosixError SeekStart() { - constexpr off_t kStartOfFile = 0; - off_t offset = lseek(fd_.get(), kStartOfFile, SEEK_SET); - if (offset < 0) { - return PosixError(errno, absl::StrCat("error seeking to ", kStartOfFile)); - } - if (offset != kStartOfFile) { - return PosixError(EINVAL, absl::StrCat("tried to seek to ", kStartOfFile, - " but got ", offset)); - } - return NoError(); - } - - // Call getdents multiple times, reading all dirents and calling f on each. - // f has the type signature PosixError f(T*). - // If f returns a non-OK error, so does ReadDirents. - template <typename F> - PosixError ReadDirents(DirentBufferType* dirents, F const& f) { - int n; - do { - dirents->Reset(); - - n = Getdents(dirents->Data(), dirents->Size()); - MaybeSave(); - if (n < 0) { - return PosixError(errno, "getdents"); - } - - for (auto d = dirents->Start(n); d; d = dirents->Next()) { - RETURN_IF_ERRNO(f(d)); - } - } while (n > 0); - - return NoError(); - } - - // Call Getdents successively and count all entries. - int ReadAndCountAllEntries(DirentBufferType* dirents) { - int found = 0; - - EXPECT_NO_ERRNO(ReadDirents(dirents, [&](LinuxDirentType* d) { - found++; - return NoError(); - })); - - return found; - } - - private: - TempPath dir_; - FileDescriptor fd_; -}; - -// Multiple template parameters are not allowed, so we must use explicit -// template specialization to set the syscall number. - -// SYS_getdents isn't defined on arm64. -#ifdef __x86_64__ -template <> -int GetdentsTest<struct linux_dirent>::SyscallNum() { - return SYS_getdents; -} -#endif - -template <> -int GetdentsTest<struct linux_dirent64>::SyscallNum() { - return SYS_getdents64; -} - -#ifdef __x86_64__ -// Test both legacy getdents and getdents64 on x86_64. -typedef ::testing::Types<struct linux_dirent, struct linux_dirent64> - GetdentsTypes; -#elif __aarch64__ -// Test only getdents64 on arm64. -typedef ::testing::Types<struct linux_dirent64> GetdentsTypes; -#endif -TYPED_TEST_SUITE(GetdentsTest, GetdentsTypes); - -// N.B. TYPED_TESTs require explicitly using this-> to access members of -// GetdentsTest, since we are inside of a derived class template. - -TYPED_TEST(GetdentsTest, VerifyEntries) { - typename TestFixture::DirentBufferType dirents(1024); - - this->FillDirectory(2); - - // Map of all the entries we expect to find. - std::map<std::string, bool> found; - found["."] = false; - found[".."] = false; - found["0"] = false; - found["1"] = false; - - EXPECT_NO_ERRNO(this->ReadDirents( - &dirents, [&](typename TestFixture::LinuxDirentType* d) { - auto kv = found.find(d->d_name); - EXPECT_NE(kv, found.end()) << "Unexpected file: " << d->d_name; - if (kv != found.end()) { - EXPECT_FALSE(kv->second); - } - found[d->d_name] = true; - return NoError(); - })); - - for (auto& kv : found) { - EXPECT_TRUE(kv.second) << "File not found: " << kv.first; - } -} - -TYPED_TEST(GetdentsTest, VerifyPadding) { - typename TestFixture::DirentBufferType dirents(1024); - - // Create files with names of length 1 through 16. - std::vector<std::string> files; - std::string filename; - for (int i = 0; i < 16; ++i) { - absl::StrAppend(&filename, "a"); - files.push_back(filename); - } - this->FillDirectoryWithFiles(files); - - // We expect to find all the files, plus '.' and '..'. - const int expect_found = 2 + files.size(); - int found = 0; - - EXPECT_NO_ERRNO(this->ReadDirents( - &dirents, [&](typename TestFixture::LinuxDirentType* d) { - EXPECT_EQ(d->d_reclen % 8, 0) - << "Dirent " << d->d_name - << " had reclen that was not byte aligned: " << d->d_name; - found++; - return NoError(); - })); - - // Make sure we found all the files. - EXPECT_EQ(found, expect_found); -} - -// For a small directory, the provided buffer should be large enough -// for all entries. -TYPED_TEST(GetdentsTest, SmallDir) { - // . and .. should be in an otherwise empty directory. - int expect = 2; - - // Add some actual files. - this->FillDirectory(2); - expect += 2; - - typename TestFixture::DirentBufferType dirents(256); - - EXPECT_EQ(expect, this->ReadAndCountAllEntries(&dirents)); -} - -// A directory with lots of files requires calling getdents multiple times. -TYPED_TEST(GetdentsTest, LargeDir) { - // . and .. should be in an otherwise empty directory. - int expect = 2; - - // Add some actual files. - this->FillDirectory(100); - expect += 100; - - typename TestFixture::DirentBufferType dirents(256); - - EXPECT_EQ(expect, this->ReadAndCountAllEntries(&dirents)); -} - -// If we lie about the size of the buffer, we should still be able to read the -// entries with the available space. -TYPED_TEST(GetdentsTest, PartialBuffer) { - // . and .. should be in an otherwise empty directory. - int expect = 2; - - // Add some actual files. - this->FillDirectory(100); - expect += 100; - - void* addr = mmap(0, 2 * kPageSize, PROT_READ | PROT_WRITE, - MAP_ANONYMOUS | MAP_PRIVATE, -1, 0); - ASSERT_NE(addr, MAP_FAILED); - - char* buf = reinterpret_cast<char*>(addr); - - // Guard page - EXPECT_THAT( - mprotect(reinterpret_cast<void*>(buf + kPageSize), kPageSize, PROT_NONE), - SyscallSucceeds()); - - // Limit space in buf to 256 bytes. - buf += kPageSize - 256; - - // Lie about the buffer. Even though we claim the buffer is 1 page, - // we should still get all of the dirents in the first 256 bytes. - typename TestFixture::DirentBufferType dirents(buf, 256, kPageSize); - - EXPECT_EQ(expect, this->ReadAndCountAllEntries(&dirents)); - - EXPECT_THAT(munmap(addr, 2 * kPageSize), SyscallSucceeds()); -} - -// Open many file descriptors, then scan through /proc/self/fd to find and close -// them all. (The latter is commonly used to handle races between fork/execve -// and the creation of unwanted non-O_CLOEXEC file descriptors.) This tests that -// getdents iterates correctly despite mutation of /proc/self/fd. -TYPED_TEST(GetdentsTest, ProcSelfFd) { - constexpr size_t kNfds = 10; - std::unordered_map<int, FileDescriptor> fds; - fds.reserve(kNfds); - for (size_t i = 0; i < kNfds; i++) { - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(NewEventFD()); - fds.emplace(fd.get(), std::move(fd)); - } - - const FileDescriptor proc_self_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open("/proc/self/fd", O_RDONLY | O_DIRECTORY)); - - // Make the buffer very small since we want to iterate. - typename TestFixture::DirentBufferType dirents( - 2 * sizeof(typename TestFixture::LinuxDirentType)); - std::unordered_set<int> prev_fds; - while (true) { - dirents.Reset(); - int rv; - ASSERT_THAT(rv = RetryEINTR(syscall)(this->SyscallNum(), proc_self_fd.get(), - dirents.Data(), dirents.Size()), - SyscallSucceeds()); - if (rv == 0) { - break; - } - for (auto* d = dirents.Start(rv); d; d = dirents.Next()) { - int dfd; - if (!absl::SimpleAtoi(d->d_name, &dfd)) continue; - EXPECT_TRUE(prev_fds.insert(dfd).second) - << "Repeated observation of /proc/self/fd/" << dfd; - fds.erase(dfd); - } - } - - // Check that we closed every fd. - EXPECT_THAT(fds, ::testing::IsEmpty()); -} - -// Test that getdents returns ENOTDIR when called on a file. -TYPED_TEST(GetdentsTest, NotDir) { - auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - auto fd = ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDONLY)); - - typename TestFixture::DirentBufferType dirents(256); - EXPECT_THAT(RetryEINTR(syscall)(this->SyscallNum(), fd.get(), dirents.Data(), - dirents.Size()), - SyscallFailsWithErrno(ENOTDIR)); -} - -// Test that SEEK_SET to 0 causes getdents to re-read the entries. -TYPED_TEST(GetdentsTest, SeekResetsCursor) { - // . and .. should be in an otherwise empty directory. - int expect = 2; - - // Add some files to the directory. - this->FillDirectory(10); - expect += 10; - - typename TestFixture::DirentBufferType dirents(256); - - // We should get all the expected entries. - EXPECT_EQ(expect, this->ReadAndCountAllEntries(&dirents)); - - // Seek back to 0. - ASSERT_NO_ERRNO(this->SeekStart()); - - // We should get all the expected entries again. - EXPECT_EQ(expect, this->ReadAndCountAllEntries(&dirents)); -} - -// Test that getdents() after SEEK_END succeeds. -// This is a regression test for #128. -TYPED_TEST(GetdentsTest, Issue128ProcSeekEnd) { - auto fd = - ASSERT_NO_ERRNO_AND_VALUE(Open("/proc/self", O_RDONLY | O_DIRECTORY)); - typename TestFixture::DirentBufferType dirents(256); - - ASSERT_THAT(lseek(fd.get(), 0, SEEK_END), SyscallSucceeds()); - ASSERT_THAT(RetryEINTR(syscall)(this->SyscallNum(), fd.get(), dirents.Data(), - dirents.Size()), - SyscallSucceeds()); -} - -// Some tests using the glibc readdir interface. -TEST(ReaddirTest, OpenDir) { - DIR* dev; - ASSERT_THAT(dev = opendir("/dev"), NotNull()); - EXPECT_THAT(closedir(dev), SyscallSucceeds()); -} - -TEST(ReaddirTest, RootContainsBasicDirectories) { - EXPECT_THAT(ListDir("/", true), - IsPosixErrorOkAndHolds(IsSupersetOf( - {"bin", "dev", "etc", "lib", "proc", "sbin", "usr"}))); -} - -TEST(ReaddirTest, Bug24096713Dev) { - auto contents = ASSERT_NO_ERRNO_AND_VALUE(ListDir("/dev", true)); - EXPECT_THAT(contents, Not(IsEmpty())); -} - -TEST(ReaddirTest, Bug24096713ProcTid) { - auto contents = ASSERT_NO_ERRNO_AND_VALUE( - ListDir(absl::StrCat("/proc/", syscall(SYS_gettid), "/"), true)); - EXPECT_THAT(contents, Not(IsEmpty())); -} - -TEST(ReaddirTest, Bug33429925Proc) { - auto contents = ASSERT_NO_ERRNO_AND_VALUE(ListDir("/proc", true)); - EXPECT_THAT(contents, Not(IsEmpty())); -} - -TEST(ReaddirTest, Bug35110122Root) { - auto contents = ASSERT_NO_ERRNO_AND_VALUE(ListDir("/", true)); - EXPECT_THAT(contents, Not(IsEmpty())); -} - -// Unlink should invalidate getdents cache. -TEST(ReaddirTest, GoneAfterRemoveCache) { - TempPath dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(dir.path())); - std::string name = std::string(Basename(file.path())); - - auto contents = ASSERT_NO_ERRNO_AND_VALUE(ListDir(dir.path(), true)); - EXPECT_THAT(contents, Contains(name)); - - file.reset(); - - contents = ASSERT_NO_ERRNO_AND_VALUE(ListDir(dir.path(), true)); - EXPECT_THAT(contents, Not(Contains(name))); -} - -// Regression test for b/137398511. Rename should invalidate getdents cache. -TEST(ReaddirTest, GoneAfterRenameCache) { - TempPath src = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - TempPath dst = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - - TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(src.path())); - std::string name = std::string(Basename(file.path())); - - auto contents = ASSERT_NO_ERRNO_AND_VALUE(ListDir(src.path(), true)); - EXPECT_THAT(contents, Contains(name)); - - ASSERT_THAT(rename(file.path().c_str(), JoinPath(dst.path(), name).c_str()), - SyscallSucceeds()); - // Release file since it was renamed. dst cleanup will ultimately delete it. - file.release(); - - contents = ASSERT_NO_ERRNO_AND_VALUE(ListDir(src.path(), true)); - EXPECT_THAT(contents, Not(Contains(name))); - - contents = ASSERT_NO_ERRNO_AND_VALUE(ListDir(dst.path(), true)); - EXPECT_THAT(contents, Contains(name)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/getrandom.cc b/test/syscalls/linux/getrandom.cc deleted file mode 100644 index f97f60029..000000000 --- a/test/syscalls/linux/getrandom.cc +++ /dev/null @@ -1,61 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <sys/syscall.h> -#include <sys/types.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -#ifndef SYS_getrandom -#if defined(__x86_64__) -#define SYS_getrandom 318 -#elif defined(__i386__) -#define SYS_getrandom 355 -#else -#error "Unknown architecture" -#endif -#endif // SYS_getrandom - -bool SomeByteIsNonZero(char* random_bytes, int length) { - for (int i = 0; i < length; i++) { - if (random_bytes[i] != 0) { - return true; - } - } - return false; -} - -TEST(GetrandomTest, IsRandom) { - // This test calls get_random and makes sure that the array is filled in with - // something that is non-zero. Perhaps we get back \x00\x00\x00\x00\x00.... as - // a random result, but it's so unlikely that we'll just ignore this. - char random_bytes[64] = {}; - int n = syscall(SYS_getrandom, random_bytes, 64, 0); - SKIP_IF(!IsRunningOnGvisor() && n < 0 && errno == ENOSYS); - EXPECT_THAT(n, SyscallSucceeds()); - EXPECT_GT(n, 0); // Some bytes should be returned. - EXPECT_TRUE(SomeByteIsNonZero(random_bytes, n)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/getrusage.cc b/test/syscalls/linux/getrusage.cc deleted file mode 100644 index 0e51d42a8..000000000 --- a/test/syscalls/linux/getrusage.cc +++ /dev/null @@ -1,177 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <signal.h> -#include <sys/mman.h> -#include <sys/resource.h> -#include <sys/types.h> -#include <sys/wait.h> - -#include "gtest/gtest.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/util/logging.h" -#include "test/util/memory_util.h" -#include "test/util/signal_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -TEST(GetrusageTest, BasicFork) { - pid_t pid = fork(); - if (pid == 0) { - struct rusage rusage_self; - TEST_PCHECK(getrusage(RUSAGE_SELF, &rusage_self) == 0); - struct rusage rusage_children; - TEST_PCHECK(getrusage(RUSAGE_CHILDREN, &rusage_children) == 0); - // The child has consumed some memory. - TEST_CHECK(rusage_self.ru_maxrss != 0); - // The child has no children of its own. - TEST_CHECK(rusage_children.ru_maxrss == 0); - _exit(0); - } - ASSERT_THAT(pid, SyscallSucceeds()); - int status; - ASSERT_THAT(RetryEINTR(waitpid)(pid, &status, 0), SyscallSucceeds()); - struct rusage rusage_self; - ASSERT_THAT(getrusage(RUSAGE_SELF, &rusage_self), SyscallSucceeds()); - struct rusage rusage_children; - ASSERT_THAT(getrusage(RUSAGE_CHILDREN, &rusage_children), SyscallSucceeds()); - // The parent has consumed some memory. - EXPECT_GT(rusage_self.ru_maxrss, 0); - // The child has consumed some memory, and because it has exited we can get - // its max RSS. - EXPECT_GT(rusage_children.ru_maxrss, 0); -} - -// Verifies that a process can get the max resident set size of its grandchild, -// i.e. that maxrss propagates correctly from children to waiting parents. -TEST(GetrusageTest, Grandchild) { - constexpr int kGrandchildSizeKb = 1024; - pid_t pid = fork(); - if (pid == 0) { - pid = fork(); - if (pid == 0) { - int flags = MAP_ANONYMOUS | MAP_POPULATE | MAP_PRIVATE; - void* addr = - mmap(nullptr, kGrandchildSizeKb * 1024, PROT_WRITE, flags, -1, 0); - TEST_PCHECK(addr != MAP_FAILED); - } else { - int status; - TEST_PCHECK(RetryEINTR(waitpid)(pid, &status, 0) == pid); - } - _exit(0); - } - ASSERT_THAT(pid, SyscallSucceeds()); - int status; - ASSERT_THAT(RetryEINTR(waitpid)(pid, &status, 0), SyscallSucceeds()); - struct rusage rusage_self; - ASSERT_THAT(getrusage(RUSAGE_SELF, &rusage_self), SyscallSucceeds()); - struct rusage rusage_children; - ASSERT_THAT(getrusage(RUSAGE_CHILDREN, &rusage_children), SyscallSucceeds()); - // The parent has consumed some memory. - EXPECT_GT(rusage_self.ru_maxrss, 0); - // The child should consume next to no memory, but the grandchild will - // consume at least 1MB. Verify that usage bubbles up to the grandparent. - EXPECT_GT(rusage_children.ru_maxrss, kGrandchildSizeKb); -} - -// Verifies that processes ignoring SIGCHLD do not have updated child maxrss -// updated. -TEST(GetrusageTest, IgnoreSIGCHLD) { - struct sigaction sa; - sa.sa_handler = SIG_IGN; - sa.sa_flags = 0; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGCHLD, sa)); - pid_t pid = fork(); - if (pid == 0) { - struct rusage rusage_self; - TEST_PCHECK(getrusage(RUSAGE_SELF, &rusage_self) == 0); - // The child has consumed some memory. - TEST_CHECK(rusage_self.ru_maxrss != 0); - _exit(0); - } - ASSERT_THAT(pid, SyscallSucceeds()); - int status; - ASSERT_THAT(RetryEINTR(waitpid)(pid, &status, 0), - SyscallFailsWithErrno(ECHILD)); - struct rusage rusage_self; - ASSERT_THAT(getrusage(RUSAGE_SELF, &rusage_self), SyscallSucceeds()); - struct rusage rusage_children; - ASSERT_THAT(getrusage(RUSAGE_CHILDREN, &rusage_children), SyscallSucceeds()); - // The parent has consumed some memory. - EXPECT_GT(rusage_self.ru_maxrss, 0); - // The child's maxrss should not have propagated up. - EXPECT_EQ(rusage_children.ru_maxrss, 0); -} - -// Verifies that zombie processes do not update their parent's maxrss. Only -// reaped processes should do this. -TEST(GetrusageTest, IgnoreZombie) { - pid_t pid = fork(); - if (pid == 0) { - struct rusage rusage_self; - TEST_PCHECK(getrusage(RUSAGE_SELF, &rusage_self) == 0); - struct rusage rusage_children; - TEST_PCHECK(getrusage(RUSAGE_CHILDREN, &rusage_children) == 0); - // The child has consumed some memory. - TEST_CHECK(rusage_self.ru_maxrss != 0); - // The child has no children of its own. - TEST_CHECK(rusage_children.ru_maxrss == 0); - _exit(0); - } - ASSERT_THAT(pid, SyscallSucceeds()); - // Give the child time to exit. Because we don't call wait, the child should - // remain a zombie. - absl::SleepFor(absl::Seconds(5)); - struct rusage rusage_self; - ASSERT_THAT(getrusage(RUSAGE_SELF, &rusage_self), SyscallSucceeds()); - struct rusage rusage_children; - ASSERT_THAT(getrusage(RUSAGE_CHILDREN, &rusage_children), SyscallSucceeds()); - // The parent has consumed some memory. - EXPECT_GT(rusage_self.ru_maxrss, 0); - // The child has consumed some memory, but hasn't been reaped. - EXPECT_EQ(rusage_children.ru_maxrss, 0); -} - -TEST(GetrusageTest, Wait4) { - pid_t pid = fork(); - if (pid == 0) { - struct rusage rusage_self; - TEST_PCHECK(getrusage(RUSAGE_SELF, &rusage_self) == 0); - struct rusage rusage_children; - TEST_PCHECK(getrusage(RUSAGE_CHILDREN, &rusage_children) == 0); - // The child has consumed some memory. - TEST_CHECK(rusage_self.ru_maxrss != 0); - // The child has no children of its own. - TEST_CHECK(rusage_children.ru_maxrss == 0); - _exit(0); - } - ASSERT_THAT(pid, SyscallSucceeds()); - struct rusage rusage_children; - int status; - ASSERT_THAT(RetryEINTR(wait4)(pid, &status, 0, &rusage_children), - SyscallSucceeds()); - // The child has consumed some memory, and because it has exited we can get - // its max RSS. - EXPECT_GT(rusage_children.ru_maxrss, 0); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/inotify.cc b/test/syscalls/linux/inotify.cc deleted file mode 100644 index 0e13ad190..000000000 --- a/test/syscalls/linux/inotify.cc +++ /dev/null @@ -1,1629 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <fcntl.h> -#include <libgen.h> -#include <sched.h> -#include <sys/epoll.h> -#include <sys/inotify.h> -#include <sys/ioctl.h> -#include <sys/time.h> - -#include <atomic> -#include <list> -#include <string> -#include <vector> - -#include "absl/strings/str_cat.h" -#include "absl/strings/str_format.h" -#include "absl/strings/str_join.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/util/epoll_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/fs_util.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { -namespace { - -using ::absl::StreamFormat; -using ::absl::StrFormat; - -constexpr int kBufSize = 1024; - -// C++-friendly version of struct inotify_event. -struct Event { - int32_t wd; - uint32_t mask; - uint32_t cookie; - uint32_t len; - std::string name; - - Event(uint32_t mask, int32_t wd, absl::string_view name, uint32_t cookie) - : wd(wd), - mask(mask), - cookie(cookie), - len(name.size()), - name(std::string(name)) {} - Event(uint32_t mask, int32_t wd, absl::string_view name) - : Event(mask, wd, name, 0) {} - Event(uint32_t mask, int32_t wd) : Event(mask, wd, "", 0) {} - Event() : Event(0, 0, "", 0) {} -}; - -// Prints the symbolic name for a struct inotify_event's 'mask' field. -std::string FlagString(uint32_t flags) { - std::vector<std::string> names; - -#define EMIT(target) \ - if (flags & target) { \ - names.push_back(#target); \ - flags &= ~target; \ - } - - EMIT(IN_ACCESS); - EMIT(IN_ATTRIB); - EMIT(IN_CLOSE_WRITE); - EMIT(IN_CLOSE_NOWRITE); - EMIT(IN_CREATE); - EMIT(IN_DELETE); - EMIT(IN_DELETE_SELF); - EMIT(IN_MODIFY); - EMIT(IN_MOVE_SELF); - EMIT(IN_MOVED_FROM); - EMIT(IN_MOVED_TO); - EMIT(IN_OPEN); - - EMIT(IN_DONT_FOLLOW); - EMIT(IN_EXCL_UNLINK); - EMIT(IN_ONESHOT); - EMIT(IN_ONLYDIR); - - EMIT(IN_IGNORED); - EMIT(IN_ISDIR); - EMIT(IN_Q_OVERFLOW); - EMIT(IN_UNMOUNT); - -#undef EMIT - - // If we have anything left over at the end, print it as a hex value. - if (flags) { - names.push_back(absl::StrCat("0x", absl::Hex(flags))); - } - - return absl::StrJoin(names, "|"); -} - -std::string DumpEvent(const Event& event) { - return StrFormat( - "%s, wd=%d%s%s", FlagString(event.mask), event.wd, - (event.len > 0) ? StrFormat(", name=%s", event.name) : "", - (event.cookie > 0) ? StrFormat(", cookie=%ud", event.cookie) : ""); -} - -std::string DumpEvents(const std::vector<Event>& events, int indent_level) { - std::stringstream ss; - ss << StreamFormat("%d event%s:\n", events.size(), - (events.size() > 1) ? "s" : ""); - int i = 0; - for (const Event& ev : events) { - ss << StreamFormat("%sevents[%d]: %s\n", std::string(indent_level, '\t'), - i++, DumpEvent(ev)); - } - return ss.str(); -} - -// A matcher which takes an expected list of events to match against another -// list of inotify events, in order. This is similar to the ElementsAre matcher, -// but displays more informative messages on mismatch. -class EventsAreMatcher - : public ::testing::MatcherInterface<std::vector<Event>> { - public: - explicit EventsAreMatcher(std::vector<Event> references) - : references_(std::move(references)) {} - - bool MatchAndExplain( - std::vector<Event> events, - ::testing::MatchResultListener* const listener) const override { - if (references_.size() != events.size()) { - *listener << StreamFormat("\n\tCount mismatch, got %s", - DumpEvents(events, 2)); - return false; - } - - bool success = true; - for (unsigned int i = 0; i < references_.size(); ++i) { - const Event& reference = references_[i]; - const Event& target = events[i]; - - if (target.mask != reference.mask || target.wd != reference.wd || - target.name != reference.name || target.cookie != reference.cookie) { - *listener << StreamFormat("\n\tMismatch at index %d, want %s, got %s,", - i, DumpEvent(reference), DumpEvent(target)); - success = false; - } - } - - if (!success) { - *listener << StreamFormat("\n\tIn total of %s", DumpEvents(events, 2)); - } - return success; - } - - void DescribeTo(::std::ostream* const os) const override { - *os << StreamFormat("%s", DumpEvents(references_, 1)); - } - - void DescribeNegationTo(::std::ostream* const os) const override { - *os << StreamFormat("mismatch from %s", DumpEvents(references_, 1)); - } - - private: - std::vector<Event> references_; -}; - -::testing::Matcher<std::vector<Event>> Are(std::vector<Event> events) { - return MakeMatcher(new EventsAreMatcher(std::move(events))); -} - -// Similar to the EventsAre matcher, but the order of events are ignored. -class UnorderedEventsAreMatcher - : public ::testing::MatcherInterface<std::vector<Event>> { - public: - explicit UnorderedEventsAreMatcher(std::vector<Event> references) - : references_(std::move(references)) {} - - bool MatchAndExplain( - std::vector<Event> events, - ::testing::MatchResultListener* const listener) const override { - if (references_.size() != events.size()) { - *listener << StreamFormat("\n\tCount mismatch, got %s", - DumpEvents(events, 2)); - return false; - } - - std::vector<Event> unmatched(references_); - - for (const Event& candidate : events) { - for (auto it = unmatched.begin(); it != unmatched.end();) { - const Event& reference = *it; - if (candidate.mask == reference.mask && candidate.wd == reference.wd && - candidate.name == reference.name && - candidate.cookie == reference.cookie) { - it = unmatched.erase(it); - break; - } else { - ++it; - } - } - } - - // Anything left unmatched? If so, the matcher fails. - if (!unmatched.empty()) { - *listener << StreamFormat("\n\tFailed to match %s", - DumpEvents(unmatched, 2)); - *listener << StreamFormat("\n\tIn total of %s", DumpEvents(events, 2)); - return false; - } - - return true; - } - - void DescribeTo(::std::ostream* const os) const override { - *os << StreamFormat("unordered %s", DumpEvents(references_, 1)); - } - - void DescribeNegationTo(::std::ostream* const os) const override { - *os << StreamFormat("mismatch from unordered %s", - DumpEvents(references_, 1)); - } - - private: - std::vector<Event> references_; -}; - -::testing::Matcher<std::vector<Event>> AreUnordered(std::vector<Event> events) { - return MakeMatcher(new UnorderedEventsAreMatcher(std::move(events))); -} - -// Reads events from an inotify fd until either EOF, or read returns EAGAIN. -PosixErrorOr<std::vector<Event>> DrainEvents(int fd) { - std::vector<Event> events; - while (true) { - int events_size = 0; - if (ioctl(fd, FIONREAD, &events_size) < 0) { - return PosixError(errno, "ioctl(FIONREAD) failed on inotify fd"); - } - // Deliberately use a buffer that is larger than necessary, expecting to - // only read events_size bytes. - std::vector<char> buf(events_size + kBufSize, 0); - const ssize_t readlen = read(fd, buf.data(), buf.size()); - MaybeSave(); - // Read error? - if (readlen < 0) { - if (errno == EAGAIN) { - // If EAGAIN, no more events at the moment. Return what we have so far. - return events; - } - // Some other read error. Return an error. Right now if we encounter this - // after already reading some events, they get lost. However, we don't - // expect to see any error, and the calling test will fail immediately if - // we signal an error anyways, so this is acceptable. - return PosixError(errno, "read() failed on inotify fd"); - } - if (readlen < static_cast<int>(sizeof(struct inotify_event))) { - // Impossibly short read. - return PosixError( - EIO, - "read() didn't return enough data represent even a single event"); - } - if (readlen != events_size) { - return PosixError(EINVAL, absl::StrCat("read ", readlen, - " bytes, expected ", events_size)); - } - if (readlen == 0) { - // EOF. - return events; - } - - // Normal read. - const char* cursor = buf.data(); - while (cursor < (buf.data() + readlen)) { - struct inotify_event event = {}; - memcpy(&event, cursor, sizeof(struct inotify_event)); - - Event ev; - ev.wd = event.wd; - ev.mask = event.mask; - ev.cookie = event.cookie; - ev.len = event.len; - if (event.len > 0) { - TEST_CHECK(static_cast<int>(sizeof(struct inotify_event) + event.len) <= - readlen); - ev.name = std::string(cursor + - offsetof(struct inotify_event, name)); // NOLINT - // Name field should always be smaller than event.len, otherwise we have - // a buffer overflow. The two sizes aren't equal because the string - // constructor will stop at the first null byte, while event.name may be - // padded up to event.len using multiple null bytes. - TEST_CHECK(ev.name.size() <= event.len); - } - - events.push_back(ev); - cursor += sizeof(struct inotify_event) + event.len; - } - } -} - -PosixErrorOr<FileDescriptor> InotifyInit1(int flags) { - int fd; - EXPECT_THAT(fd = inotify_init1(flags), SyscallSucceeds()); - if (fd < 0) { - return PosixError(errno, "inotify_init1() failed"); - } - return FileDescriptor(fd); -} - -PosixErrorOr<int> InotifyAddWatch(int fd, const std::string& path, - uint32_t mask) { - int wd; - EXPECT_THAT(wd = inotify_add_watch(fd, path.c_str(), mask), - SyscallSucceeds()); - if (wd < 0) { - return PosixError(errno, "inotify_add_watch() failed"); - } - return wd; -} - -TEST(Inotify, InotifyFdNotWritable) { - const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(0)); - EXPECT_THAT(write(fd.get(), "x", 1), SyscallFailsWithErrno(EBADF)); -} - -TEST(Inotify, NonBlockingReadReturnsEagain) { - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - std::vector<char> buf(kBufSize, 0); - - // The read below should return fail with EAGAIN because there is no data to - // read and we've specified IN_NONBLOCK. We're guaranteed that there is no - // data to read because we haven't registered any watches yet. - EXPECT_THAT(read(fd.get(), buf.data(), buf.size()), - SyscallFailsWithErrno(EAGAIN)); -} - -TEST(Inotify, AddWatchOnInvalidFdFails) { - // Garbage fd. - EXPECT_THAT(inotify_add_watch(-1, "/tmp", IN_ALL_EVENTS), - SyscallFailsWithErrno(EBADF)); - EXPECT_THAT(inotify_add_watch(1337, "/tmp", IN_ALL_EVENTS), - SyscallFailsWithErrno(EBADF)); - - // Non-inotify fds. - EXPECT_THAT(inotify_add_watch(0, "/tmp", IN_ALL_EVENTS), - SyscallFailsWithErrno(EINVAL)); - EXPECT_THAT(inotify_add_watch(1, "/tmp", IN_ALL_EVENTS), - SyscallFailsWithErrno(EINVAL)); - EXPECT_THAT(inotify_add_watch(2, "/tmp", IN_ALL_EVENTS), - SyscallFailsWithErrno(EINVAL)); - const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open("/tmp", O_RDONLY)); - EXPECT_THAT(inotify_add_watch(fd.get(), "/tmp", IN_ALL_EVENTS), - SyscallFailsWithErrno(EINVAL)); -} - -TEST(Inotify, RemovingWatchGeneratesEvent) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - - const int wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), root.path(), IN_ALL_EVENTS)); - EXPECT_THAT(inotify_rm_watch(fd.get(), wd), SyscallSucceeds()); - - // Read events, ensure the first event is IN_IGNORED. - const std::vector<Event> events = - ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - EXPECT_THAT(events, Are({Event(IN_IGNORED, wd)})); -} - -TEST(Inotify, CanDeleteFileAfterRemovingWatch) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - TempPath file1 = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(root.path())); - - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - const int wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), file1.path(), IN_ALL_EVENTS)); - - EXPECT_THAT(inotify_rm_watch(fd.get(), wd), SyscallSucceeds()); - file1.reset(); -} - -TEST(Inotify, CanRemoveWatchAfterDeletingFile) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - TempPath file1 = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(root.path())); - - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - const int wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), file1.path(), IN_ALL_EVENTS)); - - file1.reset(); - const std::vector<Event> events = - ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - EXPECT_THAT(events, Are({Event(IN_ATTRIB, wd), Event(IN_DELETE_SELF, wd), - Event(IN_IGNORED, wd)})); - - EXPECT_THAT(inotify_rm_watch(fd.get(), wd), SyscallFailsWithErrno(EINVAL)); -} - -TEST(Inotify, DuplicateWatchRemovalFails) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - const int wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), root.path(), IN_ALL_EVENTS)); - - EXPECT_THAT(inotify_rm_watch(fd.get(), wd), SyscallSucceeds()); - EXPECT_THAT(inotify_rm_watch(fd.get(), wd), SyscallFailsWithErrno(EINVAL)); -} - -TEST(Inotify, ConcurrentFileDeletionAndWatchRemoval) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - const std::string filename = NewTempAbsPathInDir(root.path()); - - auto file_create_delete = [filename]() { - const DisableSave ds; // Too expensive. - for (int i = 0; i < 100; ++i) { - FileDescriptor file_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(filename, O_CREAT, S_IRUSR | S_IWUSR)); - file_fd.reset(); // Close before unlinking (although save is disabled). - EXPECT_THAT(unlink(filename.c_str()), SyscallSucceeds()); - } - }; - - const int shared_fd = fd.get(); // We need to pass it to the thread. - auto add_remove_watch = [shared_fd, filename]() { - for (int i = 0; i < 100; ++i) { - int wd = inotify_add_watch(shared_fd, filename.c_str(), IN_ALL_EVENTS); - MaybeSave(); - if (wd != -1) { - // Watch added successfully, try removal. - if (inotify_rm_watch(shared_fd, wd)) { - // If removal fails, the only acceptable reason is if the wd - // is invalid, which will be the case if we try to remove - // the watch after the file has been deleted. - EXPECT_EQ(errno, EINVAL); - } - } else { - // Add watch failed, this should only fail if the target file doesn't - // exist. - EXPECT_EQ(errno, ENOENT); - } - } - }; - - ScopedThread t1(file_create_delete); - ScopedThread t2(add_remove_watch); -} - -TEST(Inotify, DeletingChildGeneratesEvents) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - TempPath file1 = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(root.path())); - - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - const int root_wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), root.path(), IN_ALL_EVENTS)); - const int file1_wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), file1.path(), IN_ALL_EVENTS)); - - const std::string file1_path = file1.reset(); - - const std::vector<Event> events = - ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - ASSERT_THAT( - events, - AreUnordered({Event(IN_ATTRIB, file1_wd), Event(IN_DELETE_SELF, file1_wd), - Event(IN_IGNORED, file1_wd), - Event(IN_DELETE, root_wd, Basename(file1_path))})); -} - -TEST(Inotify, CreatingFileGeneratesEvents) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - const int wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), root.path(), IN_ALL_EVENTS)); - - // Create a new file in the directory. - const TempPath file1 = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(root.path())); - const std::vector<Event> events = - ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - - // The library function we use to create the new file opens it for writing to - // create it and sets permissions on it, so we expect the three extra events. - ASSERT_THAT(events, Are({Event(IN_CREATE, wd, Basename(file1.path())), - Event(IN_OPEN, wd, Basename(file1.path())), - Event(IN_CLOSE_WRITE, wd, Basename(file1.path())), - Event(IN_ATTRIB, wd, Basename(file1.path()))})); -} - -TEST(Inotify, ReadingFileGeneratesAccessEvent) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - const TempPath file1 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - root.path(), "some content", TempPath::kDefaultFileMode)); - - const FileDescriptor file1_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file1.path(), O_RDONLY)); - const int wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), root.path(), IN_ALL_EVENTS)); - - char buf; - EXPECT_THAT(read(file1_fd.get(), &buf, 1), SyscallSucceeds()); - - const std::vector<Event> events = - ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - ASSERT_THAT(events, Are({Event(IN_ACCESS, wd, Basename(file1.path()))})); -} - -TEST(Inotify, WritingFileGeneratesModifyEvent) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - const TempPath file1 = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(root.path())); - - const FileDescriptor file1_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file1.path(), O_WRONLY)); - const int wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), root.path(), IN_ALL_EVENTS)); - - const std::string data = "some content"; - EXPECT_THAT(write(file1_fd.get(), data.c_str(), data.length()), - SyscallSucceeds()); - - const std::vector<Event> events = - ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - ASSERT_THAT(events, Are({Event(IN_MODIFY, wd, Basename(file1.path()))})); -} - -TEST(Inotify, WatchSetAfterOpenReportsCloseFdEvent) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - const TempPath file1 = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(root.path())); - - FileDescriptor file1_fd_writable = - ASSERT_NO_ERRNO_AND_VALUE(Open(file1.path(), O_WRONLY)); - FileDescriptor file1_fd_not_writable = - ASSERT_NO_ERRNO_AND_VALUE(Open(file1.path(), O_RDONLY)); - const int wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), root.path(), IN_ALL_EVENTS)); - - file1_fd_writable.reset(); // Close file1_fd_writable. - std::vector<Event> events = ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - ASSERT_THAT(events, Are({Event(IN_CLOSE_WRITE, wd, Basename(file1.path()))})); - - file1_fd_not_writable.reset(); // Close file1_fd_not_writable. - events = ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - ASSERT_THAT(events, - Are({Event(IN_CLOSE_NOWRITE, wd, Basename(file1.path()))})); -} - -TEST(Inotify, ChildrenDeletionInWatchedDirGeneratesEvent) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - - TempPath file1 = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(root.path())); - TempPath dir1 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDirIn(root.path())); - - const int wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), root.path(), IN_ALL_EVENTS)); - - const std::string file1_path = file1.reset(); - const std::string dir1_path = dir1.release(); - EXPECT_THAT(rmdir(dir1_path.c_str()), SyscallSucceeds()); - - const std::vector<Event> events = - ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - - ASSERT_THAT(events, - Are({Event(IN_DELETE, wd, Basename(file1_path)), - Event(IN_DELETE | IN_ISDIR, wd, Basename(dir1_path))})); -} - -TEST(Inotify, WatchTargetDeletionGeneratesEvent) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - - const int wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), root.path(), IN_ALL_EVENTS)); - - EXPECT_THAT(rmdir(root.path().c_str()), SyscallSucceeds()); - const std::vector<Event> events = - ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - ASSERT_THAT(events, Are({Event(IN_DELETE_SELF, wd), Event(IN_IGNORED, wd)})); -} - -TEST(Inotify, MoveGeneratesEvents) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - - TempPath file1 = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(root.path())); - - const TempPath dir1 = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDirIn(root.path())); - const TempPath dir2 = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDirIn(root.path())); - - const int root_wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), root.path(), IN_ALL_EVENTS)); - const int dir1_wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), dir1.path(), IN_ALL_EVENTS)); - const int dir2_wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), dir2.path(), IN_ALL_EVENTS)); - // Test move from root -> root. - std::string newpath = NewTempAbsPathInDir(root.path()); - std::string oldpath = file1.release(); - EXPECT_THAT(rename(oldpath.c_str(), newpath.c_str()), SyscallSucceeds()); - file1.reset(newpath); - std::vector<Event> events = ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - ASSERT_THAT( - events, - Are({Event(IN_MOVED_FROM, root_wd, Basename(oldpath), events[0].cookie), - Event(IN_MOVED_TO, root_wd, Basename(newpath), events[1].cookie)})); - EXPECT_NE(events[0].cookie, 0); - EXPECT_EQ(events[0].cookie, events[1].cookie); - uint32_t last_cookie = events[0].cookie; - - // Test move from root -> root/dir1. - newpath = NewTempAbsPathInDir(dir1.path()); - oldpath = file1.release(); - EXPECT_THAT(rename(oldpath.c_str(), newpath.c_str()), SyscallSucceeds()); - file1.reset(newpath); - events = ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - ASSERT_THAT( - events, - Are({Event(IN_MOVED_FROM, root_wd, Basename(oldpath), events[0].cookie), - Event(IN_MOVED_TO, dir1_wd, Basename(newpath), events[1].cookie)})); - // Cookies should be distinct between distinct rename events. - EXPECT_NE(events[0].cookie, last_cookie); - EXPECT_EQ(events[0].cookie, events[1].cookie); - last_cookie = events[0].cookie; - - // Test move from root/dir1 -> root/dir2. - newpath = NewTempAbsPathInDir(dir2.path()); - oldpath = file1.release(); - EXPECT_THAT(rename(oldpath.c_str(), newpath.c_str()), SyscallSucceeds()); - file1.reset(newpath); - events = ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - ASSERT_THAT( - events, - Are({Event(IN_MOVED_FROM, dir1_wd, Basename(oldpath), events[0].cookie), - Event(IN_MOVED_TO, dir2_wd, Basename(newpath), events[1].cookie)})); - EXPECT_NE(events[0].cookie, last_cookie); - EXPECT_EQ(events[0].cookie, events[1].cookie); - last_cookie = events[0].cookie; -} - -TEST(Inotify, MoveWatchedTargetGeneratesEvents) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - - TempPath file1 = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(root.path())); - - const int root_wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), root.path(), IN_ALL_EVENTS)); - const int file1_wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), file1.path(), IN_ALL_EVENTS)); - - const std::string newpath = NewTempAbsPathInDir(root.path()); - const std::string oldpath = file1.release(); - EXPECT_THAT(rename(oldpath.c_str(), newpath.c_str()), SyscallSucceeds()); - file1.reset(newpath); - const std::vector<Event> events = - ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - ASSERT_THAT( - events, - Are({Event(IN_MOVED_FROM, root_wd, Basename(oldpath), events[0].cookie), - Event(IN_MOVED_TO, root_wd, Basename(newpath), events[1].cookie), - // Self move events do not have a cookie. - Event(IN_MOVE_SELF, file1_wd)})); - EXPECT_NE(events[0].cookie, 0); - EXPECT_EQ(events[0].cookie, events[1].cookie); -} - -TEST(Inotify, CoalesceEvents) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - - const TempPath file1 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - root.path(), "some content", TempPath::kDefaultFileMode)); - - FileDescriptor file1_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file1.path(), O_RDONLY)); - const int wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), root.path(), IN_ALL_EVENTS)); - - // Read the file a few times. This will would generate multiple IN_ACCESS - // events but they should get coalesced to a single event. - char buf; - EXPECT_THAT(read(file1_fd.get(), &buf, 1), SyscallSucceeds()); - EXPECT_THAT(read(file1_fd.get(), &buf, 1), SyscallSucceeds()); - EXPECT_THAT(read(file1_fd.get(), &buf, 1), SyscallSucceeds()); - EXPECT_THAT(read(file1_fd.get(), &buf, 1), SyscallSucceeds()); - - // Use the close event verify that we haven't simply left the additional - // IN_ACCESS events unread. - file1_fd.reset(); // Close file1_fd. - - const std::string file1_name = std::string(Basename(file1.path())); - std::vector<Event> events = ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - ASSERT_THAT(events, Are({Event(IN_ACCESS, wd, file1_name), - Event(IN_CLOSE_NOWRITE, wd, file1_name)})); - - // Now let's try interleaving other events into a stream of repeated events. - file1_fd = ASSERT_NO_ERRNO_AND_VALUE(Open(file1.path(), O_RDWR)); - - EXPECT_THAT(read(file1_fd.get(), &buf, 1), SyscallSucceeds()); - EXPECT_THAT(read(file1_fd.get(), &buf, 1), SyscallSucceeds()); - EXPECT_THAT(write(file1_fd.get(), "x", 1), SyscallSucceeds()); - EXPECT_THAT(write(file1_fd.get(), "x", 1), SyscallSucceeds()); - EXPECT_THAT(write(file1_fd.get(), "x", 1), SyscallSucceeds()); - EXPECT_THAT(read(file1_fd.get(), &buf, 1), SyscallSucceeds()); - EXPECT_THAT(read(file1_fd.get(), &buf, 1), SyscallSucceeds()); - - file1_fd.reset(); // Close the file. - - events = ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - ASSERT_THAT( - events, - Are({Event(IN_OPEN, wd, file1_name), Event(IN_ACCESS, wd, file1_name), - Event(IN_MODIFY, wd, file1_name), Event(IN_ACCESS, wd, file1_name), - Event(IN_CLOSE_WRITE, wd, file1_name)})); - - // Ensure events aren't coalesced if they are from different files. - const TempPath file2 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - root.path(), "some content", TempPath::kDefaultFileMode)); - // Discard events resulting from creation of file2. - ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - - file1_fd = ASSERT_NO_ERRNO_AND_VALUE(Open(file1.path(), O_RDONLY)); - FileDescriptor file2_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file2.path(), O_RDONLY)); - - EXPECT_THAT(read(file1_fd.get(), &buf, 1), SyscallSucceeds()); - EXPECT_THAT(read(file2_fd.get(), &buf, 1), SyscallSucceeds()); - EXPECT_THAT(read(file1_fd.get(), &buf, 1), SyscallSucceeds()); - EXPECT_THAT(read(file1_fd.get(), &buf, 1), SyscallSucceeds()); - - // Close both files. - file1_fd.reset(); - file2_fd.reset(); - - events = ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - const std::string file2_name = std::string(Basename(file2.path())); - ASSERT_THAT( - events, - Are({Event(IN_OPEN, wd, file1_name), Event(IN_OPEN, wd, file2_name), - Event(IN_ACCESS, wd, file1_name), Event(IN_ACCESS, wd, file2_name), - Event(IN_ACCESS, wd, file1_name), - Event(IN_CLOSE_NOWRITE, wd, file1_name), - Event(IN_CLOSE_NOWRITE, wd, file2_name)})); -} - -TEST(Inotify, ClosingInotifyFdWithoutRemovingWatchesWorks) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - - const TempPath file1 = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(root.path())); - const FileDescriptor file1_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file1.path(), O_RDONLY)); - - ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), file1.path(), IN_ALL_EVENTS)); - // Note: The check on close will happen in FileDescriptor::~FileDescriptor(). -} - -TEST(Inotify, NestedWatches) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - - const TempPath file1 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - root.path(), "some content", TempPath::kDefaultFileMode)); - const FileDescriptor file1_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file1.path(), O_RDONLY)); - - const int root_wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), root.path(), IN_ALL_EVENTS)); - const int file1_wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), file1.path(), IN_ALL_EVENTS)); - - // Read from file1. This should generate an event for both watches. - char buf; - EXPECT_THAT(read(file1_fd.get(), &buf, 1), SyscallSucceeds()); - - const std::vector<Event> events = - ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - ASSERT_THAT(events, Are({Event(IN_ACCESS, root_wd, Basename(file1.path())), - Event(IN_ACCESS, file1_wd)})); -} - -TEST(Inotify, ConcurrentThreadsGeneratingEvents) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - - std::vector<TempPath> files; - files.reserve(10); - for (int i = 0; i < 10; i++) { - files.emplace_back(ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - root.path(), "some content", TempPath::kDefaultFileMode))); - } - - auto test_thread = [&files]() { - uint32_t seed = time(nullptr); - for (int i = 0; i < 20; i++) { - const TempPath& file = files[rand_r(&seed) % files.size()]; - const FileDescriptor file_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_WRONLY)); - TEST_PCHECK(write(file_fd.get(), "x", 1) == 1); - } - }; - - ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), root.path(), IN_ALL_EVENTS)); - - std::list<ScopedThread> threads; - for (int i = 0; i < 3; i++) { - threads.emplace_back(test_thread); - } - for (auto& t : threads) { - t.Join(); - } - - const std::vector<Event> events = - ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - // 3 threads doing 20 iterations, 3 events per iteration (open, write, - // close). However, some events may be coalesced, and we can't reliably - // predict how they'll be coalesced since the test threads aren't - // synchronized. We can only check that we aren't getting unexpected events. - for (const Event& ev : events) { - EXPECT_NE(ev.mask & (IN_OPEN | IN_MODIFY | IN_CLOSE_WRITE), 0); - } -} - -TEST(Inotify, ReadWithTooSmallBufferFails) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const TempPath file1 = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(root.path())); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - - const int wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), file1.path(), IN_ALL_EVENTS)); - - // Open the file to queue an event. This event will not have a filename, so - // reading from the inotify fd should return sizeof(struct inotify_event) - // bytes of data. - FileDescriptor file1_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file1.path(), O_RDONLY)); - std::vector<char> buf(kBufSize, 0); - ssize_t readlen; - - // Try a buffer too small to hold any potential event. This is rejected - // outright without the event being dequeued. - EXPECT_THAT(read(fd.get(), buf.data(), sizeof(struct inotify_event) - 1), - SyscallFailsWithErrno(EINVAL)); - // Try a buffer just large enough. This should succeeed. - EXPECT_THAT( - readlen = read(fd.get(), buf.data(), sizeof(struct inotify_event)), - SyscallSucceeds()); - EXPECT_EQ(readlen, sizeof(struct inotify_event)); - // Event queue is now empty, the next read should return EAGAIN. - EXPECT_THAT(read(fd.get(), buf.data(), sizeof(struct inotify_event)), - SyscallFailsWithErrno(EAGAIN)); - - // Now put a watch on the directory, so that generated events contain a name. - EXPECT_THAT(inotify_rm_watch(fd.get(), wd), SyscallSucceeds()); - - // Drain the event generated from the watch removal. - ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - - ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), root.path(), IN_ALL_EVENTS)); - - file1_fd.reset(); // Close file to generate an event. - - // Try a buffer too small to hold any event and one too small to hold an event - // with a name. These should both fail without consuming the event. - EXPECT_THAT(read(fd.get(), buf.data(), sizeof(struct inotify_event) - 1), - SyscallFailsWithErrno(EINVAL)); - EXPECT_THAT(read(fd.get(), buf.data(), sizeof(struct inotify_event)), - SyscallFailsWithErrno(EINVAL)); - // Now try with a large enough buffer. This should return the one event. - EXPECT_THAT(readlen = read(fd.get(), buf.data(), buf.size()), - SyscallSucceeds()); - EXPECT_GE(readlen, - sizeof(struct inotify_event) + Basename(file1.path()).size()); - // With the single event read, the queue should once again be empty. - EXPECT_THAT(read(fd.get(), buf.data(), sizeof(struct inotify_event)), - SyscallFailsWithErrno(EAGAIN)); -} - -TEST(Inotify, BlockingReadOnInotifyFd) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(0)); - const TempPath file1 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - root.path(), "some content", TempPath::kDefaultFileMode)); - - const FileDescriptor file1_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file1.path(), O_RDONLY)); - - ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), root.path(), IN_ALL_EVENTS)); - - // Spawn a thread performing a blocking read for new events on the inotify fd. - std::vector<char> buf(kBufSize, 0); - const int shared_fd = fd.get(); // The thread needs it. - ScopedThread t([shared_fd, &buf]() { - ssize_t readlen; - EXPECT_THAT(readlen = read(shared_fd, buf.data(), buf.size()), - SyscallSucceeds()); - }); - - // Perform a read on the watched file, which should generate an IN_ACCESS - // event, unblocking the event_reader thread. - char c; - EXPECT_THAT(read(file1_fd.get(), &c, 1), SyscallSucceeds()); - - // Wait for the thread to read the event and exit. - t.Join(); - - // Make sure the event we got back is sane. - uint32_t event_mask; - memcpy(&event_mask, buf.data() + offsetof(struct inotify_event, mask), - sizeof(event_mask)); - EXPECT_EQ(event_mask, IN_ACCESS); -} - -TEST(Inotify, WatchOnRelativePath) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - const TempPath file1 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - root.path(), "some content", TempPath::kDefaultFileMode)); - - const FileDescriptor file1_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file1.path(), O_RDONLY)); - - // Change working directory to root. - const FileDescriptor cwd = ASSERT_NO_ERRNO_AND_VALUE(Open(".", O_PATH)); - EXPECT_THAT(chdir(root.path().c_str()), SyscallSucceeds()); - - // Add a watch on file1 with a relative path. - const int wd = ASSERT_NO_ERRNO_AND_VALUE(InotifyAddWatch( - fd.get(), std::string(Basename(file1.path())), IN_ALL_EVENTS)); - - // Perform a read on file1, this should generate an IN_ACCESS event. - char c; - EXPECT_THAT(read(file1_fd.get(), &c, 1), SyscallSucceeds()); - - const std::vector<Event> events = - ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - EXPECT_THAT(events, Are({Event(IN_ACCESS, wd)})); - - // Explicitly reset the working directory so that we don't continue to - // reference "root". Once the test ends, "root" will get unlinked. If we - // continue to hold a reference, random save/restore tests can fail if a save - // is triggered after "root" is unlinked; we can't save deleted fs objects - // with active references. - EXPECT_THAT(fchdir(cwd.get()), SyscallSucceeds()); -} - -TEST(Inotify, ZeroLengthReadWriteDoesNotGenerateEvent) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - - const char kContent[] = "some content"; - TempPath file1 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - root.path(), kContent, TempPath::kDefaultFileMode)); - const int kContentSize = sizeof(kContent) - 1; - - const FileDescriptor file1_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file1.path(), O_RDWR)); - - const int wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), root.path(), IN_ALL_EVENTS)); - - std::vector<char> buf(kContentSize, 0); - // Read all available data. - ssize_t readlen; - EXPECT_THAT(readlen = read(file1_fd.get(), buf.data(), kContentSize), - SyscallSucceeds()); - EXPECT_EQ(readlen, kContentSize); - // Drain all events and make sure we got the IN_ACCESS for the read. - std::vector<Event> events = ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - EXPECT_THAT(events, Are({Event(IN_ACCESS, wd, Basename(file1.path()))})); - - // Now try read again. This should be a 0-length read, since we're at EOF. - char c; - EXPECT_THAT(readlen = read(file1_fd.get(), &c, 1), SyscallSucceeds()); - EXPECT_EQ(readlen, 0); - // We should have no new events. - events = ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - EXPECT_TRUE(events.empty()); - - // Try issuing a zero-length read. - EXPECT_THAT(readlen = read(file1_fd.get(), &c, 0), SyscallSucceeds()); - EXPECT_EQ(readlen, 0); - // We should have no new events. - events = ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - EXPECT_TRUE(events.empty()); - - // Try issuing a zero-length write. - ssize_t writelen; - EXPECT_THAT(writelen = write(file1_fd.get(), &c, 0), SyscallSucceeds()); - EXPECT_EQ(writelen, 0); - // We should have no new events. - events = ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - EXPECT_TRUE(events.empty()); -} - -TEST(Inotify, ChmodGeneratesAttribEvent_NoRandomSave) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const TempPath file1 = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(root.path())); - - FileDescriptor root_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(root.path(), O_RDONLY)); - FileDescriptor file1_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file1.path(), O_RDWR)); - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - - const int root_wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), root.path(), IN_ALL_EVENTS)); - const int file1_wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), file1.path(), IN_ALL_EVENTS)); - - auto verify_chmod_events = [&]() { - std::vector<Event> events = - ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - ASSERT_THAT(events, Are({Event(IN_ATTRIB, root_wd, Basename(file1.path())), - Event(IN_ATTRIB, file1_wd)})); - }; - - // Don't do cooperative S/R tests for any of the {f}chmod* syscalls below, the - // test will always fail because nodes cannot be saved when they have stricter - // permissions than the original host node. - const DisableSave ds; - - // Chmod. - ASSERT_THAT(chmod(file1.path().c_str(), S_IWGRP), SyscallSucceeds()); - verify_chmod_events(); - - // Fchmod. - ASSERT_THAT(fchmod(file1_fd.get(), S_IRGRP | S_IWGRP), SyscallSucceeds()); - verify_chmod_events(); - - // Fchmodat. - const std::string file1_basename = std::string(Basename(file1.path())); - ASSERT_THAT(fchmodat(root_fd.get(), file1_basename.c_str(), S_IWGRP, 0), - SyscallSucceeds()); - verify_chmod_events(); - - // Make sure the chmod'ed file descriptors are destroyed before DisableSave - // is destructed. - root_fd.reset(); - file1_fd.reset(); -} - -TEST(Inotify, TruncateGeneratesModifyEvent) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const TempPath file1 = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(root.path())); - const FileDescriptor file1_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file1.path(), O_RDWR)); - - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - const int root_wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), root.path(), IN_ALL_EVENTS)); - const int file1_wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), file1.path(), IN_ALL_EVENTS)); - - auto verify_truncate_events = [&]() { - std::vector<Event> events = - ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - ASSERT_THAT(events, Are({Event(IN_MODIFY, root_wd, Basename(file1.path())), - Event(IN_MODIFY, file1_wd)})); - }; - - // Truncate. - EXPECT_THAT(truncate(file1.path().c_str(), 4096), SyscallSucceeds()); - verify_truncate_events(); - - // Ftruncate. - EXPECT_THAT(ftruncate(file1_fd.get(), 8192), SyscallSucceeds()); - verify_truncate_events(); - - // No events if truncate fails. - EXPECT_THAT(ftruncate(file1_fd.get(), -1), SyscallFailsWithErrno(EINVAL)); - const std::vector<Event> events = - ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - ASSERT_THAT(events, Are({})); -} - -TEST(Inotify, GetdentsGeneratesAccessEvent) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const TempPath file1 = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(root.path())); - - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - - ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), root.path(), IN_ALL_EVENTS)); - ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), file1.path(), IN_ALL_EVENTS)); - - // This internally calls getdents(2). We also expect to see an open/close - // event for the dirfd. - ASSERT_NO_ERRNO_AND_VALUE(ListDir(root.path(), false)); - const std::vector<Event> events = - ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - - // Linux only seems to generate access events on getdents() on some - // calls. Allow the test to pass even if it isn't generated. gVisor will - // always generate the IN_ACCESS event so the test will at least ensure gVisor - // behaves reasonably. - int i = 0; - EXPECT_EQ(events[i].mask, IN_OPEN | IN_ISDIR); - ++i; - if (IsRunningOnGvisor()) { - EXPECT_EQ(events[i].mask, IN_ACCESS | IN_ISDIR); - ++i; - } else { - if (events[i].mask == (IN_ACCESS | IN_ISDIR)) { - // Skip over the IN_ACCESS event on Linux, it only shows up some of the - // time so we can't assert its existence. - ++i; - } - } - EXPECT_EQ(events[i].mask, IN_CLOSE_NOWRITE | IN_ISDIR); -} - -TEST(Inotify, MknodGeneratesCreateEvent) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - - const int wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), root.path(), IN_ALL_EVENTS)); - - const TempPath file1(root.path() + "/file1"); - const int rc = mknod(file1.path().c_str(), S_IFREG, 0); - // mknod(2) is only supported on tmpfs in the sandbox. - SKIP_IF(IsRunningOnGvisor() && rc != 0); - ASSERT_THAT(rc, SyscallSucceeds()); - - const std::vector<Event> events = - ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - ASSERT_THAT(events, Are({Event(IN_CREATE, wd, Basename(file1.path()))})); -} - -TEST(Inotify, SymlinkGeneratesCreateEvent) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const TempPath file1 = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(root.path())); - const TempPath link1(NewTempAbsPathInDir(root.path())); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - - const int root_wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), root.path(), IN_ALL_EVENTS)); - ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), file1.path(), IN_ALL_EVENTS)); - - ASSERT_THAT(symlink(file1.path().c_str(), link1.path().c_str()), - SyscallSucceeds()); - - const std::vector<Event> events = - ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - - ASSERT_THAT(events, Are({Event(IN_CREATE, root_wd, Basename(link1.path()))})); -} - -TEST(Inotify, LinkGeneratesAttribAndCreateEvents) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const TempPath file1 = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(root.path())); - const TempPath link1(root.path() + "/link1"); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - - const int root_wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), root.path(), IN_ALL_EVENTS)); - const int file1_wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), file1.path(), IN_ALL_EVENTS)); - - const int rc = link(file1.path().c_str(), link1.path().c_str()); - // link(2) is only supported on tmpfs in the sandbox. - SKIP_IF(IsRunningOnGvisor() && rc != 0 && - (errno == EPERM || errno == ENOENT)); - ASSERT_THAT(rc, SyscallSucceeds()); - - const std::vector<Event> events = - ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - ASSERT_THAT(events, Are({Event(IN_ATTRIB, file1_wd), - Event(IN_CREATE, root_wd, Basename(link1.path()))})); -} - -TEST(Inotify, UtimesGeneratesAttribEvent) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - const TempPath file1 = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(root.path())); - - const FileDescriptor file1_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file1.path(), O_RDWR)); - const int wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), root.path(), IN_ALL_EVENTS)); - - struct timeval times[2] = {{1, 0}, {2, 0}}; - EXPECT_THAT(futimes(file1_fd.get(), times), SyscallSucceeds()); - - const std::vector<Event> events = - ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - ASSERT_THAT(events, Are({Event(IN_ATTRIB, wd, Basename(file1.path()))})); -} - -TEST(Inotify, HardlinksReuseSameWatch) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - TempPath file1 = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(root.path())); - TempPath link1(root.path() + "/link1"); - const int rc = link(file1.path().c_str(), link1.path().c_str()); - // link(2) is only supported on tmpfs in the sandbox. - SKIP_IF(IsRunningOnGvisor() && rc != 0 && - (errno == EPERM || errno == ENOENT)); - ASSERT_THAT(rc, SyscallSucceeds()); - - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - - const int root_wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), root.path(), IN_ALL_EVENTS)); - const int file1_wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), file1.path(), IN_ALL_EVENTS)); - const int link1_wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), link1.path(), IN_ALL_EVENTS)); - - // The watch descriptors for watches on different links to the same file - // should be identical. - EXPECT_NE(root_wd, file1_wd); - EXPECT_EQ(file1_wd, link1_wd); - - FileDescriptor file1_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file1.path(), O_WRONLY)); - - std::vector<Event> events = ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - ASSERT_THAT(events, - AreUnordered({Event(IN_OPEN, root_wd, Basename(file1.path())), - Event(IN_OPEN, file1_wd)})); - - // For the next step, we want to ensure all fds to the file are closed. Do - // that now and drain the resulting events. - file1_fd.reset(); - events = ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - ASSERT_THAT(events, - Are({Event(IN_CLOSE_WRITE, root_wd, Basename(file1.path())), - Event(IN_CLOSE_WRITE, file1_wd)})); - - // Try removing the link and let's see what events show up. Note that after - // this, we still have a link to the file so the watch shouldn't be - // automatically removed. - const std::string link1_path = link1.reset(); - - events = ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - ASSERT_THAT(events, Are({Event(IN_ATTRIB, link1_wd), - Event(IN_DELETE, root_wd, Basename(link1_path))})); - - // Now remove the other link. Since this is the last link to the file, the - // watch should be automatically removed. - const std::string file1_path = file1.reset(); - - events = ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - ASSERT_THAT( - events, - AreUnordered({Event(IN_ATTRIB, file1_wd), Event(IN_DELETE_SELF, file1_wd), - Event(IN_IGNORED, file1_wd), - Event(IN_DELETE, root_wd, Basename(file1_path))})); -} - -TEST(Inotify, MkdirGeneratesCreateEventWithDirFlag) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - const int root_wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), root.path(), IN_ALL_EVENTS)); - - const TempPath dir1(NewTempAbsPathInDir(root.path())); - ASSERT_THAT(mkdir(dir1.path().c_str(), 0777), SyscallSucceeds()); - - const std::vector<Event> events = - ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - ASSERT_THAT( - events, - Are({Event(IN_CREATE | IN_ISDIR, root_wd, Basename(dir1.path()))})); -} - -TEST(Inotify, MultipleInotifyInstancesAndWatchesAllGetEvents) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const TempPath file1 = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(root.path())); - - const FileDescriptor file1_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file1.path(), O_WRONLY)); - constexpr int kNumFds = 30; - std::vector<FileDescriptor> inotify_fds; - - for (int i = 0; i < kNumFds; ++i) { - const DisableSave ds; // Too expensive. - inotify_fds.emplace_back( - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK))); - const FileDescriptor& fd = inotify_fds[inotify_fds.size() - 1]; // Back. - ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), root.path(), IN_ALL_EVENTS)); - ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), file1.path(), IN_ALL_EVENTS)); - } - - const std::string data = "some content"; - EXPECT_THAT(write(file1_fd.get(), data.c_str(), data.length()), - SyscallSucceeds()); - - for (const FileDescriptor& fd : inotify_fds) { - const DisableSave ds; // Too expensive. - const std::vector<Event> events = - ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - if (events.size() >= 2) { - EXPECT_EQ(events[0].mask, IN_MODIFY); - EXPECT_EQ(events[0].wd, 1); - EXPECT_EQ(events[0].name, Basename(file1.path())); - EXPECT_EQ(events[1].mask, IN_MODIFY); - EXPECT_EQ(events[1].wd, 2); - EXPECT_EQ(events[1].name, ""); - } - } -} - -TEST(Inotify, EventsGoUpAtMostOneLevel) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const TempPath dir1 = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDirIn(root.path())); - TempPath file1 = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(dir1.path())); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - - ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), root.path(), IN_ALL_EVENTS)); - const int dir1_wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), dir1.path(), IN_ALL_EVENTS)); - - const std::string file1_path = file1.reset(); - - const std::vector<Event> events = - ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - ASSERT_THAT(events, Are({Event(IN_DELETE, dir1_wd, Basename(file1_path))})); -} - -TEST(Inotify, DuplicateWatchReturnsSameWatchDescriptor) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const TempPath file1 = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(root.path())); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - - const int wd1 = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), file1.path(), IN_ALL_EVENTS)); - const int wd2 = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), file1.path(), IN_ALL_EVENTS)); - - EXPECT_EQ(wd1, wd2); - - const FileDescriptor file1_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file1.path(), O_WRONLY)); - const std::vector<Event> events = - ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - // The watch shouldn't be duplicated, we only expect one event. - ASSERT_THAT(events, Are({Event(IN_OPEN, wd1)})); -} - -TEST(Inotify, UnmatchedEventsAreDiscarded) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const TempPath file1 = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(root.path())); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - - ASSERT_NO_ERRNO_AND_VALUE(InotifyAddWatch(fd.get(), file1.path(), IN_ACCESS)); - - const FileDescriptor file1_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file1.path(), O_WRONLY)); - - const std::vector<Event> events = - ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - // We only asked for access events, the open event should be discarded. - ASSERT_THAT(events, Are({})); -} - -TEST(Inotify, AddWatchWithInvalidEventMaskFails) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - - EXPECT_THAT(inotify_add_watch(fd.get(), root.path().c_str(), 0), - SyscallFailsWithErrno(EINVAL)); -} - -TEST(Inotify, AddWatchOnInvalidPathFails) { - const TempPath nonexistent(NewTempAbsPath()); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - - // Non-existent path. - EXPECT_THAT( - inotify_add_watch(fd.get(), nonexistent.path().c_str(), IN_CREATE), - SyscallFailsWithErrno(ENOENT)); - - // Garbage path pointer. - EXPECT_THAT(inotify_add_watch(fd.get(), nullptr, IN_CREATE), - SyscallFailsWithErrno(EFAULT)); -} - -TEST(Inotify, InOnlyDirFlagRespected) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const TempPath file1 = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(root.path())); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - - EXPECT_THAT( - inotify_add_watch(fd.get(), root.path().c_str(), IN_ACCESS | IN_ONLYDIR), - SyscallSucceeds()); - - EXPECT_THAT( - inotify_add_watch(fd.get(), file1.path().c_str(), IN_ACCESS | IN_ONLYDIR), - SyscallFailsWithErrno(ENOTDIR)); -} - -TEST(Inotify, MaskAddMergesWithExistingEventMask) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const TempPath file1 = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(root.path())); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - - FileDescriptor file1_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file1.path(), O_WRONLY)); - - const int wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), file1.path(), IN_OPEN | IN_CLOSE_WRITE)); - - const std::string data = "some content"; - EXPECT_THAT(write(file1_fd.get(), data.c_str(), data.length()), - SyscallSucceeds()); - - // We shouldn't get any events, since IN_MODIFY wasn't in the event mask. - std::vector<Event> events = ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - ASSERT_THAT(events, Are({})); - - // Add IN_MODIFY to event mask. - ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), file1.path(), IN_MODIFY | IN_MASK_ADD)); - - EXPECT_THAT(write(file1_fd.get(), data.c_str(), data.length()), - SyscallSucceeds()); - - // This time we should get the modify event. - events = ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - ASSERT_THAT(events, Are({Event(IN_MODIFY, wd)})); - - // Now close the fd. If the modify event was added to the event mask rather - // than replacing the event mask we won't get the close event. - file1_fd.reset(); - events = ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - ASSERT_THAT(events, Are({Event(IN_CLOSE_WRITE, wd)})); -} - -// Test that control events bits are not considered when checking event mask. -TEST(Inotify, ControlEvents) { - const TempPath dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - - const int wd = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), dir.path(), IN_ACCESS)); - - // Check that events in the mask are dispatched and that control bits are - // part of the event mask. - std::vector<std::string> files = - ASSERT_NO_ERRNO_AND_VALUE(ListDir(dir.path(), false)); - ASSERT_EQ(files.size(), 2); - - const std::vector<Event> events1 = - ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - ASSERT_THAT(events1, Are({Event(IN_ACCESS | IN_ISDIR, wd)})); - - // Check that events not in the mask are discarded. - const FileDescriptor dir_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(dir.path(), O_RDONLY | O_DIRECTORY)); - - const std::vector<Event> events2 = - ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(fd.get())); - ASSERT_THAT(events2, Are({})); -} - -// Regression test to ensure epoll and directory access doesn't deadlock. -TEST(Inotify, EpollNoDeadlock) { - const DisableSave ds; // Too many syscalls. - - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - - // Create lots of directories and watch all of them. - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - std::vector<TempPath> children; - for (size_t i = 0; i < 1000; ++i) { - auto child = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDirIn(root.path())); - ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), child.path(), IN_ACCESS)); - children.emplace_back(std::move(child)); - } - - // Run epoll_wait constantly in a separate thread. - std::atomic<bool> done(false); - ScopedThread th([&fd, &done] { - for (auto start = absl::Now(); absl::Now() - start < absl::Seconds(5);) { - FileDescriptor epoll_fd = ASSERT_NO_ERRNO_AND_VALUE(NewEpollFD()); - ASSERT_NO_ERRNO(RegisterEpollFD(epoll_fd.get(), fd.get(), - EPOLLIN | EPOLLOUT | EPOLLET, 0)); - struct epoll_event result[1]; - EXPECT_THAT(RetryEINTR(epoll_wait)(epoll_fd.get(), result, 1, -1), - SyscallSucceedsWithValue(1)); - - sched_yield(); - } - done = true; - }); - - // While epoll thread is running, constantly access all directories to - // generate inotify events. - while (!done) { - std::vector<std::string> files = - ASSERT_NO_ERRNO_AND_VALUE(ListDir(root.path(), false)); - ASSERT_EQ(files.size(), 1002); - for (const auto& child : files) { - if (child == "." || child == "..") { - continue; - } - ASSERT_NO_ERRNO_AND_VALUE(ListDir(JoinPath(root.path(), child), false)); - } - sched_yield(); - } -} - -TEST(Inotify, SpliceEvent) { - int pipes[2]; - ASSERT_THAT(pipe2(pipes, O_NONBLOCK), SyscallSucceeds()); - - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(InotifyInit1(IN_NONBLOCK)); - const TempPath file1 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - root.path(), "some content", TempPath::kDefaultFileMode)); - - const FileDescriptor file1_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file1.path(), O_RDONLY)); - const int watcher = ASSERT_NO_ERRNO_AND_VALUE( - InotifyAddWatch(fd.get(), file1.path(), IN_ALL_EVENTS)); - - char buf; - EXPECT_THAT(read(file1_fd.get(), &buf, 1), SyscallSucceeds()); - - EXPECT_THAT(splice(fd.get(), nullptr, pipes[1], nullptr, - sizeof(struct inotify_event) + 1, SPLICE_F_NONBLOCK), - SyscallSucceedsWithValue(sizeof(struct inotify_event))); - - const FileDescriptor read_fd(pipes[0]); - const std::vector<Event> events = - ASSERT_NO_ERRNO_AND_VALUE(DrainEvents(read_fd.get())); - ASSERT_THAT(events, Are({Event(IN_ACCESS, watcher)})); -} - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/ioctl.cc b/test/syscalls/linux/ioctl.cc deleted file mode 100644 index b0a07a064..000000000 --- a/test/syscalls/linux/ioctl.cc +++ /dev/null @@ -1,406 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <arpa/inet.h> -#include <errno.h> -#include <fcntl.h> -#include <net/if.h> -#include <netdb.h> -#include <signal.h> -#include <sys/ioctl.h> -#include <sys/socket.h> -#include <sys/types.h> -#include <unistd.h> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "test/syscalls/linux/ip_socket_test_util.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/signal_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -bool CheckNonBlocking(int fd) { - int ret = fcntl(fd, F_GETFL, 0); - TEST_CHECK(ret != -1); - return (ret & O_NONBLOCK) == O_NONBLOCK; -} - -bool CheckCloExec(int fd) { - int ret = fcntl(fd, F_GETFD, 0); - TEST_CHECK(ret != -1); - return (ret & FD_CLOEXEC) == FD_CLOEXEC; -} - -class IoctlTest : public ::testing::Test { - protected: - void SetUp() override { - ASSERT_THAT(fd_ = open("/dev/null", O_RDONLY), SyscallSucceeds()); - } - - void TearDown() override { - if (fd_ >= 0) { - ASSERT_THAT(close(fd_), SyscallSucceeds()); - fd_ = -1; - } - } - - int fd() const { return fd_; } - - private: - int fd_ = -1; -}; - -TEST_F(IoctlTest, BadFileDescriptor) { - EXPECT_THAT(ioctl(-1 /* fd */, 0), SyscallFailsWithErrno(EBADF)); -} - -TEST_F(IoctlTest, InvalidControlNumber) { - EXPECT_THAT(ioctl(STDOUT_FILENO, 0), SyscallFailsWithErrno(ENOTTY)); -} - -TEST_F(IoctlTest, FIONBIOSucceeds) { - EXPECT_FALSE(CheckNonBlocking(fd())); - int set = 1; - EXPECT_THAT(ioctl(fd(), FIONBIO, &set), SyscallSucceeds()); - EXPECT_TRUE(CheckNonBlocking(fd())); - set = 0; - EXPECT_THAT(ioctl(fd(), FIONBIO, &set), SyscallSucceeds()); - EXPECT_FALSE(CheckNonBlocking(fd())); -} - -TEST_F(IoctlTest, FIONBIOFails) { - EXPECT_THAT(ioctl(fd(), FIONBIO, nullptr), SyscallFailsWithErrno(EFAULT)); -} - -TEST_F(IoctlTest, FIONCLEXSucceeds) { - EXPECT_THAT(ioctl(fd(), FIONCLEX), SyscallSucceeds()); - EXPECT_FALSE(CheckCloExec(fd())); -} - -TEST_F(IoctlTest, FIOCLEXSucceeds) { - EXPECT_THAT(ioctl(fd(), FIOCLEX), SyscallSucceeds()); - EXPECT_TRUE(CheckCloExec(fd())); -} - -TEST_F(IoctlTest, FIOASYNCFails) { - EXPECT_THAT(ioctl(fd(), FIOASYNC, nullptr), SyscallFailsWithErrno(EFAULT)); -} - -TEST_F(IoctlTest, FIOASYNCSucceeds) { - // Not all FDs support FIOASYNC. - const FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE( - Socket(AF_UNIX, SOCK_SEQPACKET | SOCK_NONBLOCK | SOCK_CLOEXEC, 0)); - - int before = -1; - ASSERT_THAT(before = fcntl(s.get(), F_GETFL), SyscallSucceeds()); - - int set = 1; - EXPECT_THAT(ioctl(s.get(), FIOASYNC, &set), SyscallSucceeds()); - - int after_set = -1; - ASSERT_THAT(after_set = fcntl(s.get(), F_GETFL), SyscallSucceeds()); - EXPECT_EQ(after_set, before | O_ASYNC) << "before was " << before; - - set = 0; - EXPECT_THAT(ioctl(s.get(), FIOASYNC, &set), SyscallSucceeds()); - - ASSERT_THAT(fcntl(s.get(), F_GETFL), SyscallSucceedsWithValue(before)); -} - -/* Count of the number of SIGIOs handled. */ -static volatile int io_received = 0; - -void inc_io_handler(int sig, siginfo_t* siginfo, void* arg) { io_received++; } - -TEST_F(IoctlTest, FIOASYNCNoTarget) { - auto pair = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - - // Count SIGIOs received. - io_received = 0; - struct sigaction sa; - sa.sa_sigaction = inc_io_handler; - sigfillset(&sa.sa_mask); - sa.sa_flags = SA_RESTART; - auto sa_cleanup = ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGIO, sa)); - - // Actually allow SIGIO delivery. - auto mask_cleanup = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_UNBLOCK, SIGIO)); - - int set = 1; - EXPECT_THAT(ioctl(pair->second_fd(), FIOASYNC, &set), SyscallSucceeds()); - - constexpr char kData[] = "abc"; - ASSERT_THAT(WriteFd(pair->first_fd(), kData, sizeof(kData)), - SyscallSucceedsWithValue(sizeof(kData))); - - EXPECT_EQ(io_received, 0); -} - -TEST_F(IoctlTest, FIOASYNCSelfTarget) { - // FIXME(b/120624367): gVisor erroneously sends SIGIO on close(2), which would - // kill the test when pair goes out of scope. Temporarily ignore SIGIO so that - // that the close signal is ignored. - struct sigaction sa; - sa.sa_handler = SIG_IGN; - auto early_sa_cleanup = ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGIO, sa)); - - auto pair = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - - // Count SIGIOs received. - io_received = 0; - sa.sa_sigaction = inc_io_handler; - sigfillset(&sa.sa_mask); - sa.sa_flags = SA_RESTART; - auto sa_cleanup = ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGIO, sa)); - - // Actually allow SIGIO delivery. - auto mask_cleanup = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_UNBLOCK, SIGIO)); - - int set = 1; - EXPECT_THAT(ioctl(pair->second_fd(), FIOASYNC, &set), SyscallSucceeds()); - - pid_t pid = getpid(); - EXPECT_THAT(ioctl(pair->second_fd(), FIOSETOWN, &pid), SyscallSucceeds()); - - constexpr char kData[] = "abc"; - ASSERT_THAT(WriteFd(pair->first_fd(), kData, sizeof(kData)), - SyscallSucceedsWithValue(sizeof(kData))); - - EXPECT_EQ(io_received, 1); -} - -// Equivalent to FIOASYNCSelfTarget except that FIOSETOWN is called before -// FIOASYNC. -TEST_F(IoctlTest, FIOASYNCSelfTarget2) { - // FIXME(b/120624367): gVisor erroneously sends SIGIO on close(2), which would - // kill the test when pair goes out of scope. Temporarily ignore SIGIO so that - // that the close signal is ignored. - struct sigaction sa; - sa.sa_handler = SIG_IGN; - auto early_sa_cleanup = ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGIO, sa)); - - auto pair = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - - // Count SIGIOs received. - io_received = 0; - sa.sa_sigaction = inc_io_handler; - sigfillset(&sa.sa_mask); - sa.sa_flags = SA_RESTART; - auto sa_cleanup = ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGIO, sa)); - - // Actually allow SIGIO delivery. - auto mask_cleanup = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_UNBLOCK, SIGIO)); - - pid_t pid = -1; - EXPECT_THAT(pid = getpid(), SyscallSucceeds()); - EXPECT_THAT(ioctl(pair->second_fd(), FIOSETOWN, &pid), SyscallSucceeds()); - - int set = 1; - EXPECT_THAT(ioctl(pair->second_fd(), FIOASYNC, &set), SyscallSucceeds()); - - constexpr char kData[] = "abc"; - ASSERT_THAT(WriteFd(pair->first_fd(), kData, sizeof(kData)), - SyscallSucceedsWithValue(sizeof(kData))); - - EXPECT_EQ(io_received, 1); -} - -// Check that closing an FD does not result in an event. -TEST_F(IoctlTest, FIOASYNCSelfTargetClose) { - // Count SIGIOs received. - struct sigaction sa; - io_received = 0; - sa.sa_sigaction = inc_io_handler; - sigfillset(&sa.sa_mask); - sa.sa_flags = SA_RESTART; - auto sa_cleanup = ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGIO, sa)); - - // Actually allow SIGIO delivery. - auto mask_cleanup = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_UNBLOCK, SIGIO)); - - for (int i = 0; i < 2; i++) { - auto pair = ASSERT_NO_ERRNO_AND_VALUE( - UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - - pid_t pid = getpid(); - EXPECT_THAT(ioctl(pair->second_fd(), FIOSETOWN, &pid), SyscallSucceeds()); - - int set = 1; - EXPECT_THAT(ioctl(pair->second_fd(), FIOASYNC, &set), SyscallSucceeds()); - } - - // FIXME(b/120624367): gVisor erroneously sends SIGIO on close. - SKIP_IF(IsRunningOnGvisor()); - - EXPECT_EQ(io_received, 0); -} - -TEST_F(IoctlTest, FIOASYNCInvalidPID) { - auto pair = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - int set = 1; - ASSERT_THAT(ioctl(pair->second_fd(), FIOASYNC, &set), SyscallSucceeds()); - pid_t pid = INT_MAX; - // This succeeds (with behavior equivalent to a pid of 0) in Linux prior to - // f73127356f34 "fs/fcntl: return -ESRCH in f_setown when pid/pgid can't be - // found", and fails with EPERM after that commit. - EXPECT_THAT(ioctl(pair->second_fd(), FIOSETOWN, &pid), - AnyOf(SyscallSucceeds(), SyscallFailsWithErrno(ESRCH))); -} - -TEST_F(IoctlTest, FIOASYNCUnsetTarget) { - auto pair = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - - // Count SIGIOs received. - io_received = 0; - struct sigaction sa; - sa.sa_sigaction = inc_io_handler; - sigfillset(&sa.sa_mask); - sa.sa_flags = SA_RESTART; - auto sa_cleanup = ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGIO, sa)); - - // Actually allow SIGIO delivery. - auto mask_cleanup = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_UNBLOCK, SIGIO)); - - int set = 1; - EXPECT_THAT(ioctl(pair->second_fd(), FIOASYNC, &set), SyscallSucceeds()); - - pid_t pid = getpid(); - EXPECT_THAT(ioctl(pair->second_fd(), FIOSETOWN, &pid), SyscallSucceeds()); - - // Passing a PID of 0 unsets the target. - pid = 0; - EXPECT_THAT(ioctl(pair->second_fd(), FIOSETOWN, &pid), SyscallSucceeds()); - - constexpr char kData[] = "abc"; - ASSERT_THAT(WriteFd(pair->first_fd(), kData, sizeof(kData)), - SyscallSucceedsWithValue(sizeof(kData))); - - EXPECT_EQ(io_received, 0); -} - -using IoctlTestSIOCGIFCONF = SimpleSocketTest; - -TEST_P(IoctlTestSIOCGIFCONF, ValidateNoArrayGetsLength) { - auto fd = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Validate that no array can be used to get the length required. - struct ifconf ifconf = {}; - ASSERT_THAT(ioctl(fd->get(), SIOCGIFCONF, &ifconf), SyscallSucceeds()); - ASSERT_GT(ifconf.ifc_len, 0); -} - -// This test validates that we will only return a partial array list and not -// partial ifrreq structs. -TEST_P(IoctlTestSIOCGIFCONF, ValidateNoPartialIfrsReturned) { - auto fd = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - struct ifreq ifr = {}; - struct ifconf ifconf = {}; - ifconf.ifc_len = sizeof(ifr) - 1; // One byte too few. - ifconf.ifc_ifcu.ifcu_req = 𝔦 - - ASSERT_THAT(ioctl(fd->get(), SIOCGIFCONF, &ifconf), SyscallSucceeds()); - ASSERT_EQ(ifconf.ifc_len, 0); - ASSERT_EQ(ifr.ifr_name[0], '\0'); // Nothing is returned. - - ifconf.ifc_len = sizeof(ifreq); - ASSERT_THAT(ioctl(fd->get(), SIOCGIFCONF, &ifconf), SyscallSucceeds()); - ASSERT_GT(ifconf.ifc_len, 0); - ASSERT_NE(ifr.ifr_name[0], '\0'); // An interface can now be returned. -} - -TEST_P(IoctlTestSIOCGIFCONF, ValidateLoopbackIsPresent) { - auto fd = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - struct ifconf ifconf = {}; - struct ifreq ifr[10] = {}; // Storage for up to 10 interfaces. - - ifconf.ifc_req = ifr; - ifconf.ifc_len = sizeof(ifr); - - ASSERT_THAT(ioctl(fd->get(), SIOCGIFCONF, &ifconf), SyscallSucceeds()); - size_t num_if = ifconf.ifc_len / sizeof(struct ifreq); - - // We should have at least one interface. - ASSERT_GE(num_if, 1); - - // One of the interfaces should be a loopback. - bool found_loopback = false; - for (size_t i = 0; i < num_if; ++i) { - if (strcmp(ifr[i].ifr_name, "lo") == 0) { - // SIOCGIFCONF returns the ipv4 address of the interface, let's check it. - ASSERT_EQ(ifr[i].ifr_addr.sa_family, AF_INET); - - // Validate the address is correct for loopback. - sockaddr_in* sin = reinterpret_cast<sockaddr_in*>(&ifr[i].ifr_addr); - ASSERT_EQ(htonl(sin->sin_addr.s_addr), INADDR_LOOPBACK); - - found_loopback = true; - break; - } - } - ASSERT_TRUE(found_loopback); -} - -std::vector<SocketKind> IoctlSocketTypes() { - return {SimpleSocket(AF_UNIX, SOCK_STREAM, 0), - SimpleSocket(AF_UNIX, SOCK_DGRAM, 0), - SimpleSocket(AF_INET, SOCK_STREAM, 0), - SimpleSocket(AF_INET6, SOCK_STREAM, 0), - SimpleSocket(AF_INET, SOCK_DGRAM, 0), - SimpleSocket(AF_INET6, SOCK_DGRAM, 0)}; -} - -INSTANTIATE_TEST_SUITE_P(IoctlTest, IoctlTestSIOCGIFCONF, - ::testing::ValuesIn(IoctlSocketTypes())); - -} // namespace - -TEST_F(IoctlTest, FIOGETOWNSucceeds) { - const FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE( - Socket(AF_UNIX, SOCK_SEQPACKET | SOCK_NONBLOCK | SOCK_CLOEXEC, 0)); - - int get = -1; - ASSERT_THAT(ioctl(s.get(), FIOGETOWN, &get), SyscallSucceeds()); - EXPECT_EQ(get, 0); -} - -TEST_F(IoctlTest, SIOCGPGRPSucceeds) { - const FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE( - Socket(AF_UNIX, SOCK_SEQPACKET | SOCK_NONBLOCK | SOCK_CLOEXEC, 0)); - - int get = -1; - ASSERT_THAT(ioctl(s.get(), SIOCGPGRP, &get), SyscallSucceeds()); - EXPECT_EQ(get, 0); -} - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/ip_socket_test_util.cc b/test/syscalls/linux/ip_socket_test_util.cc deleted file mode 100644 index bba022a41..000000000 --- a/test/syscalls/linux/ip_socket_test_util.cc +++ /dev/null @@ -1,241 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/syscalls/linux/ip_socket_test_util.h" - -#include <net/if.h> -#include <netinet/in.h> -#include <sys/ioctl.h> -#include <sys/socket.h> - -#include <cstring> - -namespace gvisor { -namespace testing { - -uint32_t IPFromInetSockaddr(const struct sockaddr* addr) { - auto* in_addr = reinterpret_cast<const struct sockaddr_in*>(addr); - return in_addr->sin_addr.s_addr; -} - -uint16_t PortFromInetSockaddr(const struct sockaddr* addr) { - auto* in_addr = reinterpret_cast<const struct sockaddr_in*>(addr); - return ntohs(in_addr->sin_port); -} - -PosixErrorOr<int> InterfaceIndex(std::string name) { - // TODO(igudger): Consider using netlink. - ifreq req = {}; - memcpy(req.ifr_name, name.c_str(), name.size()); - ASSIGN_OR_RETURN_ERRNO(auto sock, Socket(AF_INET, SOCK_DGRAM, 0)); - RETURN_ERROR_IF_SYSCALL_FAIL(ioctl(sock.get(), SIOCGIFINDEX, &req)); - return req.ifr_ifindex; -} - -namespace { - -std::string DescribeSocketType(int type) { - return absl::StrCat(((type & SOCK_NONBLOCK) != 0) ? "non-blocking " : "", - ((type & SOCK_CLOEXEC) != 0) ? "close-on-exec " : ""); -} - -} // namespace - -SocketPairKind IPv6TCPAcceptBindSocketPair(int type) { - std::string description = - absl::StrCat(DescribeSocketType(type), "connected IPv6 TCP socket"); - return SocketPairKind{ - description, AF_INET6, type | SOCK_STREAM, IPPROTO_TCP, - TCPAcceptBindSocketPairCreator(AF_INET6, type | SOCK_STREAM, 0, - /* dual_stack = */ false)}; -} - -SocketPairKind IPv4TCPAcceptBindSocketPair(int type) { - std::string description = - absl::StrCat(DescribeSocketType(type), "connected IPv4 TCP socket"); - return SocketPairKind{ - description, AF_INET, type | SOCK_STREAM, IPPROTO_TCP, - TCPAcceptBindSocketPairCreator(AF_INET, type | SOCK_STREAM, 0, - /* dual_stack = */ false)}; -} - -SocketPairKind DualStackTCPAcceptBindSocketPair(int type) { - std::string description = - absl::StrCat(DescribeSocketType(type), "connected dual stack TCP socket"); - return SocketPairKind{ - description, AF_INET6, type | SOCK_STREAM, IPPROTO_TCP, - TCPAcceptBindSocketPairCreator(AF_INET6, type | SOCK_STREAM, 0, - /* dual_stack = */ true)}; -} - -SocketPairKind IPv6TCPAcceptBindPersistentListenerSocketPair(int type) { - std::string description = - absl::StrCat(DescribeSocketType(type), "connected IPv6 TCP socket"); - return SocketPairKind{description, AF_INET6, type | SOCK_STREAM, IPPROTO_TCP, - TCPAcceptBindPersistentListenerSocketPairCreator( - AF_INET6, type | SOCK_STREAM, 0, - /* dual_stack = */ false)}; -} - -SocketPairKind IPv4TCPAcceptBindPersistentListenerSocketPair(int type) { - std::string description = - absl::StrCat(DescribeSocketType(type), "connected IPv4 TCP socket"); - return SocketPairKind{description, AF_INET, type | SOCK_STREAM, IPPROTO_TCP, - TCPAcceptBindPersistentListenerSocketPairCreator( - AF_INET, type | SOCK_STREAM, 0, - /* dual_stack = */ false)}; -} - -SocketPairKind DualStackTCPAcceptBindPersistentListenerSocketPair(int type) { - std::string description = - absl::StrCat(DescribeSocketType(type), "connected dual stack TCP socket"); - return SocketPairKind{description, AF_INET6, type | SOCK_STREAM, IPPROTO_TCP, - TCPAcceptBindPersistentListenerSocketPairCreator( - AF_INET6, type | SOCK_STREAM, 0, - /* dual_stack = */ true)}; -} - -SocketPairKind IPv6UDPBidirectionalBindSocketPair(int type) { - std::string description = - absl::StrCat(DescribeSocketType(type), "connected IPv6 UDP socket"); - return SocketPairKind{ - description, AF_INET6, type | SOCK_DGRAM, IPPROTO_UDP, - UDPBidirectionalBindSocketPairCreator(AF_INET6, type | SOCK_DGRAM, 0, - /* dual_stack = */ false)}; -} - -SocketPairKind IPv4UDPBidirectionalBindSocketPair(int type) { - std::string description = - absl::StrCat(DescribeSocketType(type), "connected IPv4 UDP socket"); - return SocketPairKind{ - description, AF_INET, type | SOCK_DGRAM, IPPROTO_UDP, - UDPBidirectionalBindSocketPairCreator(AF_INET, type | SOCK_DGRAM, 0, - /* dual_stack = */ false)}; -} - -SocketPairKind DualStackUDPBidirectionalBindSocketPair(int type) { - std::string description = - absl::StrCat(DescribeSocketType(type), "connected dual stack UDP socket"); - return SocketPairKind{ - description, AF_INET6, type | SOCK_DGRAM, IPPROTO_UDP, - UDPBidirectionalBindSocketPairCreator(AF_INET6, type | SOCK_DGRAM, 0, - /* dual_stack = */ true)}; -} - -SocketPairKind IPv4UDPUnboundSocketPair(int type) { - std::string description = - absl::StrCat(DescribeSocketType(type), "IPv4 UDP socket"); - return SocketPairKind{ - description, AF_INET, type | SOCK_DGRAM, IPPROTO_UDP, - UDPUnboundSocketPairCreator(AF_INET, type | SOCK_DGRAM, 0, - /* dual_stack = */ false)}; -} - -SocketKind IPv4UDPUnboundSocket(int type) { - std::string description = - absl::StrCat(DescribeSocketType(type), "IPv4 UDP socket"); - return SocketKind{ - description, AF_INET, type | SOCK_DGRAM, IPPROTO_UDP, - UnboundSocketCreator(AF_INET, type | SOCK_DGRAM, IPPROTO_UDP)}; -} - -SocketKind IPv6UDPUnboundSocket(int type) { - std::string description = - absl::StrCat(DescribeSocketType(type), "IPv6 UDP socket"); - return SocketKind{ - description, AF_INET6, type | SOCK_DGRAM, IPPROTO_UDP, - UnboundSocketCreator(AF_INET6, type | SOCK_DGRAM, IPPROTO_UDP)}; -} - -SocketKind IPv4TCPUnboundSocket(int type) { - std::string description = - absl::StrCat(DescribeSocketType(type), "IPv4 TCP socket"); - return SocketKind{ - description, AF_INET, type | SOCK_STREAM, IPPROTO_TCP, - UnboundSocketCreator(AF_INET, type | SOCK_STREAM, IPPROTO_TCP)}; -} - -SocketKind IPv6TCPUnboundSocket(int type) { - std::string description = - absl::StrCat(DescribeSocketType(type), "IPv6 TCP socket"); - return SocketKind{ - description, AF_INET6, type | SOCK_STREAM, IPPROTO_TCP, - UnboundSocketCreator(AF_INET6, type | SOCK_STREAM, IPPROTO_TCP)}; -} - -PosixError IfAddrHelper::Load() { - Release(); - RETURN_ERROR_IF_SYSCALL_FAIL(getifaddrs(&ifaddr_)); - return PosixError(0); -} - -void IfAddrHelper::Release() { - if (ifaddr_) { - freeifaddrs(ifaddr_); - } - ifaddr_ = nullptr; -} - -std::vector<std::string> IfAddrHelper::InterfaceList(int family) { - std::vector<std::string> names; - for (auto ifa = ifaddr_; ifa != NULL; ifa = ifa->ifa_next) { - if (ifa->ifa_addr == NULL || ifa->ifa_addr->sa_family != family) { - continue; - } - names.emplace(names.end(), ifa->ifa_name); - } - return names; -} - -sockaddr* IfAddrHelper::GetAddr(int family, std::string name) { - for (auto ifa = ifaddr_; ifa != NULL; ifa = ifa->ifa_next) { - if (ifa->ifa_addr == NULL || ifa->ifa_addr->sa_family != family) { - continue; - } - if (name == ifa->ifa_name) { - return ifa->ifa_addr; - } - } - return nullptr; -} - -PosixErrorOr<int> IfAddrHelper::GetIndex(std::string name) { - return InterfaceIndex(name); -} - -std::string GetAddr4Str(const in_addr* a) { - char str[INET_ADDRSTRLEN]; - inet_ntop(AF_INET, a, str, sizeof(str)); - return std::string(str); -} - -std::string GetAddr6Str(const in6_addr* a) { - char str[INET6_ADDRSTRLEN]; - inet_ntop(AF_INET6, a, str, sizeof(str)); - return std::string(str); -} - -std::string GetAddrStr(const sockaddr* a) { - if (a->sa_family == AF_INET) { - auto src = &(reinterpret_cast<const sockaddr_in*>(a)->sin_addr); - return GetAddr4Str(src); - } else if (a->sa_family == AF_INET6) { - auto src = &(reinterpret_cast<const sockaddr_in6*>(a)->sin6_addr); - return GetAddr6Str(src); - } - return std::string("<invalid>"); -} - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/ip_socket_test_util.h b/test/syscalls/linux/ip_socket_test_util.h deleted file mode 100644 index 083ebbcf0..000000000 --- a/test/syscalls/linux/ip_socket_test_util.h +++ /dev/null @@ -1,135 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_SYSCALLS_IP_SOCKET_TEST_UTIL_H_ -#define GVISOR_TEST_SYSCALLS_IP_SOCKET_TEST_UTIL_H_ - -#include <arpa/inet.h> -#include <ifaddrs.h> -#include <sys/types.h> - -#include <string> - -#include "test/syscalls/linux/socket_test_util.h" - -namespace gvisor { -namespace testing { - -// Extracts the IP address from an inet sockaddr in network byte order. -uint32_t IPFromInetSockaddr(const struct sockaddr* addr); - -// Extracts the port from an inet sockaddr in host byte order. -uint16_t PortFromInetSockaddr(const struct sockaddr* addr); - -// InterfaceIndex returns the index of the named interface. -PosixErrorOr<int> InterfaceIndex(std::string name); - -// IPv6TCPAcceptBindSocketPair returns a SocketPairKind that represents -// SocketPairs created with bind() and accept() syscalls with AF_INET6 and the -// given type bound to the IPv6 loopback. -SocketPairKind IPv6TCPAcceptBindSocketPair(int type); - -// IPv4TCPAcceptBindSocketPair returns a SocketPairKind that represents -// SocketPairs created with bind() and accept() syscalls with AF_INET and the -// given type bound to the IPv4 loopback. -SocketPairKind IPv4TCPAcceptBindSocketPair(int type); - -// DualStackTCPAcceptBindSocketPair returns a SocketPairKind that represents -// SocketPairs created with bind() and accept() syscalls with AF_INET6 and the -// given type bound to the IPv4 loopback. -SocketPairKind DualStackTCPAcceptBindSocketPair(int type); - -// IPv6TCPAcceptBindPersistentListenerSocketPair is like -// IPv6TCPAcceptBindSocketPair except it uses a persistent listening socket to -// create all socket pairs. -SocketPairKind IPv6TCPAcceptBindPersistentListenerSocketPair(int type); - -// IPv4TCPAcceptBindPersistentListenerSocketPair is like -// IPv4TCPAcceptBindSocketPair except it uses a persistent listening socket to -// create all socket pairs. -SocketPairKind IPv4TCPAcceptBindPersistentListenerSocketPair(int type); - -// DualStackTCPAcceptBindPersistentListenerSocketPair is like -// DualStackTCPAcceptBindSocketPair except it uses a persistent listening socket -// to create all socket pairs. -SocketPairKind DualStackTCPAcceptBindPersistentListenerSocketPair(int type); - -// IPv6UDPBidirectionalBindSocketPair returns a SocketPairKind that represents -// SocketPairs created with bind() and connect() syscalls with AF_INET6 and the -// given type bound to the IPv6 loopback. -SocketPairKind IPv6UDPBidirectionalBindSocketPair(int type); - -// IPv4UDPBidirectionalBindSocketPair returns a SocketPairKind that represents -// SocketPairs created with bind() and connect() syscalls with AF_INET and the -// given type bound to the IPv4 loopback. -SocketPairKind IPv4UDPBidirectionalBindSocketPair(int type); - -// DualStackUDPBidirectionalBindSocketPair returns a SocketPairKind that -// represents SocketPairs created with bind() and connect() syscalls with -// AF_INET6 and the given type bound to the IPv4 loopback. -SocketPairKind DualStackUDPBidirectionalBindSocketPair(int type); - -// IPv4UDPUnboundSocketPair returns a SocketPairKind that represents -// SocketPairs created with AF_INET and the given type. -SocketPairKind IPv4UDPUnboundSocketPair(int type); - -// IPv4UDPUnboundSocketPair returns a SocketKind that represents -// a SimpleSocket created with AF_INET, SOCK_DGRAM, and the given type. -SocketKind IPv4UDPUnboundSocket(int type); - -// IPv6UDPUnboundSocketPair returns a SocketKind that represents -// a SimpleSocket created with AF_INET6, SOCK_DGRAM, and the given type. -SocketKind IPv6UDPUnboundSocket(int type); - -// IPv4TCPUnboundSocketPair returns a SocketKind that represents -// a SimpleSocket created with AF_INET, SOCK_STREAM and the given type. -SocketKind IPv4TCPUnboundSocket(int type); - -// IPv6TCPUnboundSocketPair returns a SocketKind that represents -// a SimpleSocket created with AF_INET6, SOCK_STREAM and the given type. -SocketKind IPv6TCPUnboundSocket(int type); - -// IfAddrHelper is a helper class that determines the local interfaces present -// and provides functions to obtain their names, index numbers, and IP address. -class IfAddrHelper { - public: - IfAddrHelper() : ifaddr_(nullptr) {} - ~IfAddrHelper() { Release(); } - - PosixError Load(); - void Release(); - - std::vector<std::string> InterfaceList(int family); - - struct sockaddr* GetAddr(int family, std::string name); - PosixErrorOr<int> GetIndex(std::string name); - - private: - struct ifaddrs* ifaddr_; -}; - -// GetAddr4Str returns the given IPv4 network address structure as a string. -std::string GetAddr4Str(const in_addr* a); - -// GetAddr6Str returns the given IPv6 network address structure as a string. -std::string GetAddr6Str(const in6_addr* a); - -// GetAddrStr returns the given IPv4 or IPv6 network address structure as a -// string. -std::string GetAddrStr(const sockaddr* a); - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_SYSCALLS_IP_SOCKET_TEST_UTIL_H_ diff --git a/test/syscalls/linux/iptables.cc b/test/syscalls/linux/iptables.cc deleted file mode 100644 index b8e4ece64..000000000 --- a/test/syscalls/linux/iptables.cc +++ /dev/null @@ -1,204 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/syscalls/linux/iptables.h" - -#include <arpa/inet.h> -#include <linux/capability.h> -#include <linux/netfilter/x_tables.h> -#include <net/if.h> -#include <netinet/in.h> -#include <netinet/ip.h> -#include <netinet/ip_icmp.h> -#include <stdio.h> -#include <sys/poll.h> -#include <sys/socket.h> -#include <sys/types.h> -#include <unistd.h> - -#include <algorithm> - -#include "gtest/gtest.h" -#include "test/util/capability_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -constexpr char kNatTablename[] = "nat"; -constexpr char kErrorTarget[] = "ERROR"; -constexpr size_t kEmptyStandardEntrySize = - sizeof(struct ipt_entry) + sizeof(struct ipt_standard_target); -constexpr size_t kEmptyErrorEntrySize = - sizeof(struct ipt_entry) + sizeof(struct ipt_error_target); - -TEST(IPTablesBasic, CreateSocket) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))); - - int sock; - ASSERT_THAT(sock = socket(AF_INET, SOCK_RAW, IPPROTO_ICMP), - SyscallSucceeds()); - - ASSERT_THAT(close(sock), SyscallSucceeds()); -} - -TEST(IPTablesBasic, FailSockoptNonRaw) { - // Even if the user has CAP_NET_RAW, they shouldn't be able to use the - // iptables sockopts with a non-raw socket. - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))); - - int sock; - ASSERT_THAT(sock = socket(AF_INET, SOCK_DGRAM, 0), SyscallSucceeds()); - - struct ipt_getinfo info = {}; - snprintf(info.name, XT_TABLE_MAXNAMELEN, "%s", kNatTablename); - socklen_t info_size = sizeof(info); - EXPECT_THAT(getsockopt(sock, IPPROTO_IP, SO_GET_INFO, &info, &info_size), - SyscallFailsWithErrno(ENOPROTOOPT)); - - ASSERT_THAT(close(sock), SyscallSucceeds()); -} - -// Fixture for iptables tests. -class IPTablesTest : public ::testing::Test { - protected: - // Creates a socket to be used in tests. - void SetUp() override; - - // Closes the socket created by SetUp(). - void TearDown() override; - - // The socket via which to manipulate iptables. - int s_; -}; - -void IPTablesTest::SetUp() { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))); - - ASSERT_THAT(s_ = socket(AF_INET, SOCK_RAW, IPPROTO_ICMP), SyscallSucceeds()); -} - -void IPTablesTest::TearDown() { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))); - - EXPECT_THAT(close(s_), SyscallSucceeds()); -} - -// This tests the initial state of a machine with empty iptables. We don't have -// a guarantee that the iptables are empty when running in native, but we can -// test that gVisor has the same initial state that a newly-booted Linux machine -// would have. -TEST_F(IPTablesTest, InitialState) { - SKIP_IF(!IsRunningOnGvisor()); - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))); - - // - // Get info via sockopt. - // - struct ipt_getinfo info = {}; - snprintf(info.name, XT_TABLE_MAXNAMELEN, "%s", kNatTablename); - socklen_t info_size = sizeof(info); - ASSERT_THAT(getsockopt(s_, IPPROTO_IP, SO_GET_INFO, &info, &info_size), - SyscallSucceeds()); - - // The nat table supports PREROUTING, and OUTPUT. - unsigned int valid_hooks = (1 << NF_IP_PRE_ROUTING) | (1 << NF_IP_LOCAL_OUT) | - (1 << NF_IP_POST_ROUTING) | (1 << NF_IP_LOCAL_IN); - - EXPECT_EQ(info.valid_hooks, valid_hooks); - - // Each chain consists of an empty entry with a standard target.. - EXPECT_EQ(info.hook_entry[NF_IP_PRE_ROUTING], 0); - EXPECT_EQ(info.hook_entry[NF_IP_LOCAL_IN], kEmptyStandardEntrySize); - EXPECT_EQ(info.hook_entry[NF_IP_LOCAL_OUT], kEmptyStandardEntrySize * 2); - EXPECT_EQ(info.hook_entry[NF_IP_POST_ROUTING], kEmptyStandardEntrySize * 3); - - // The underflow points are the same as the entry points. - EXPECT_EQ(info.underflow[NF_IP_PRE_ROUTING], 0); - EXPECT_EQ(info.underflow[NF_IP_LOCAL_IN], kEmptyStandardEntrySize); - EXPECT_EQ(info.underflow[NF_IP_LOCAL_OUT], kEmptyStandardEntrySize * 2); - EXPECT_EQ(info.underflow[NF_IP_POST_ROUTING], kEmptyStandardEntrySize * 3); - - // One entry for each chain, plus an error entry at the end. - EXPECT_EQ(info.num_entries, 5); - - EXPECT_EQ(info.size, 4 * kEmptyStandardEntrySize + kEmptyErrorEntrySize); - EXPECT_EQ(strcmp(info.name, kNatTablename), 0); - - // - // Use info to get entries. - // - socklen_t entries_size = sizeof(struct ipt_get_entries) + info.size; - struct ipt_get_entries* entries = - static_cast<struct ipt_get_entries*>(malloc(entries_size)); - snprintf(entries->name, XT_TABLE_MAXNAMELEN, "%s", kNatTablename); - entries->size = info.size; - ASSERT_THAT( - getsockopt(s_, IPPROTO_IP, SO_GET_ENTRIES, entries, &entries_size), - SyscallSucceeds()); - - // Verify the name and size. - ASSERT_EQ(info.size, entries->size); - ASSERT_EQ(strcmp(entries->name, kNatTablename), 0); - - // Verify that the entrytable is 4 entries with accept targets and no matches - // followed by a single error target. - size_t entry_offset = 0; - while (entry_offset < entries->size) { - struct ipt_entry* entry = reinterpret_cast<struct ipt_entry*>( - reinterpret_cast<char*>(entries->entrytable) + entry_offset); - - // ip should be zeroes. - struct ipt_ip zeroed = {}; - EXPECT_EQ(memcmp(static_cast<void*>(&zeroed), - static_cast<void*>(&entry->ip), sizeof(zeroed)), - 0); - - // target_offset should be zero. - EXPECT_EQ(entry->target_offset, sizeof(ipt_entry)); - - if (entry_offset < kEmptyStandardEntrySize * 4) { - // The first 4 entries are standard targets - struct ipt_standard_target* target = - reinterpret_cast<struct ipt_standard_target*>(entry->elems); - EXPECT_EQ(entry->next_offset, kEmptyStandardEntrySize); - EXPECT_EQ(target->target.u.user.target_size, sizeof(*target)); - EXPECT_EQ(strcmp(target->target.u.user.name, ""), 0); - EXPECT_EQ(target->target.u.user.revision, 0); - // This is what's returned for an accept verdict. I don't know why. - EXPECT_EQ(target->verdict, -NF_ACCEPT - 1); - } else { - // The last entry is an error target - struct ipt_error_target* target = - reinterpret_cast<struct ipt_error_target*>(entry->elems); - EXPECT_EQ(entry->next_offset, kEmptyErrorEntrySize); - EXPECT_EQ(target->target.u.user.target_size, sizeof(*target)); - EXPECT_EQ(strcmp(target->target.u.user.name, kErrorTarget), 0); - EXPECT_EQ(target->target.u.user.revision, 0); - EXPECT_EQ(strcmp(target->errorname, kErrorTarget), 0); - } - - entry_offset += entry->next_offset; - } - - free(entries); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/iptables.h b/test/syscalls/linux/iptables.h deleted file mode 100644 index 0719c60a4..000000000 --- a/test/syscalls/linux/iptables.h +++ /dev/null @@ -1,198 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// There are a number of structs and values that we can't #include because of a -// difference between C and C++ (C++ won't let you implicitly cast from void* to -// struct something*). We re-define them here. - -#ifndef GVISOR_TEST_SYSCALLS_IPTABLES_TYPES_H_ -#define GVISOR_TEST_SYSCALLS_IPTABLES_TYPES_H_ - -// Netfilter headers require some headers to preceed them. -// clang-format off -#include <netinet/in.h> -#include <stddef.h> -// clang-format on - -#include <linux/netfilter/x_tables.h> -#include <linux/netfilter_ipv4.h> -#include <net/if.h> -#include <netinet/ip.h> -#include <stdint.h> - -#define ipt_standard_target xt_standard_target -#define ipt_entry_target xt_entry_target -#define ipt_error_target xt_error_target - -enum SockOpts { - // For setsockopt. - BASE_CTL = 64, - SO_SET_REPLACE = BASE_CTL, - SO_SET_ADD_COUNTERS, - SO_SET_MAX = SO_SET_ADD_COUNTERS, - - // For getsockopt. - SO_GET_INFO = BASE_CTL, - SO_GET_ENTRIES, - SO_GET_REVISION_MATCH, - SO_GET_REVISION_TARGET, - SO_GET_MAX = SO_GET_REVISION_TARGET -}; - -// ipt_ip specifies basic matching criteria that can be applied by examining -// only the IP header of a packet. -struct ipt_ip { - // Source IP address. - struct in_addr src; - - // Destination IP address. - struct in_addr dst; - - // Source IP address mask. - struct in_addr smsk; - - // Destination IP address mask. - struct in_addr dmsk; - - // Input interface. - char iniface[IFNAMSIZ]; - - // Output interface. - char outiface[IFNAMSIZ]; - - // Input interface mask. - unsigned char iniface_mask[IFNAMSIZ]; - - // Output interface mask. - unsigned char outiface_mask[IFNAMSIZ]; - - // Transport protocol. - uint16_t proto; - - // Flags. - uint8_t flags; - - // Inverse flags. - uint8_t invflags; -}; - -// ipt_entry is an iptables rule. It contains information about what packets the -// rule matches and what action (target) to perform for matching packets. -struct ipt_entry { - // Basic matching information used to match a packet's IP header. - struct ipt_ip ip; - - // A caching field that isn't used by userspace. - unsigned int nfcache; - - // The number of bytes between the start of this ipt_entry struct and the - // rule's target. - uint16_t target_offset; - - // The total size of this rule, from the beginning of the entry to the end of - // the target. - uint16_t next_offset; - - // A return pointer not used by userspace. - unsigned int comefrom; - - // Counters for packets and bytes, which we don't yet implement. - struct xt_counters counters; - - // The data for all this rules matches followed by the target. This runs - // beyond the value of sizeof(struct ipt_entry). - unsigned char elems[0]; -}; - -// Passed to getsockopt(SO_GET_INFO). -struct ipt_getinfo { - // The name of the table. The user only fills this in, the rest is filled in - // when returning from getsockopt. Currently "nat" and "mangle" are supported. - char name[XT_TABLE_MAXNAMELEN]; - - // A bitmap of which hooks apply to the table. For example, a table with hooks - // PREROUTING and FORWARD has the value - // (1 << NF_IP_PRE_REOUTING) | (1 << NF_IP_FORWARD). - unsigned int valid_hooks; - - // The offset into the entry table for each valid hook. The entry table is - // returned by getsockopt(SO_GET_ENTRIES). - unsigned int hook_entry[NF_IP_NUMHOOKS]; - - // For each valid hook, the underflow is the offset into the entry table to - // jump to in case traversing the table yields no verdict (although I have no - // clue how that could happen - builtin chains always end with a policy, and - // user-defined chains always end with a RETURN. - // - // The entry referred to must be an "unconditional" entry, meaning it has no - // matches, specifies no IP criteria, and either DROPs or ACCEPTs packets. It - // basically has to be capable of making a definitive decision no matter what - // it's passed. - unsigned int underflow[NF_IP_NUMHOOKS]; - - // The number of entries in the entry table returned by - // getsockopt(SO_GET_ENTRIES). - unsigned int num_entries; - - // The size of the entry table returned by getsockopt(SO_GET_ENTRIES). - unsigned int size; -}; - -// Passed to getsockopt(SO_GET_ENTRIES). -struct ipt_get_entries { - // The name of the table. The user fills this in. Currently "nat" and "mangle" - // are supported. - char name[XT_TABLE_MAXNAMELEN]; - - // The size of the entry table in bytes. The user fills this in with the value - // from struct ipt_getinfo.size. - unsigned int size; - - // The entries for the given table. This will run past the size defined by - // sizeof(struct ipt_get_entries). - struct ipt_entry entrytable[0]; -}; - -// Passed to setsockopt(SO_SET_REPLACE). -struct ipt_replace { - // The name of the table. - char name[XT_TABLE_MAXNAMELEN]; - - // The same as struct ipt_getinfo.valid_hooks. Users don't change this. - unsigned int valid_hooks; - - // The same as struct ipt_getinfo.num_entries. - unsigned int num_entries; - - // The same as struct ipt_getinfo.size. - unsigned int size; - - // The same as struct ipt_getinfo.hook_entry. - unsigned int hook_entry[NF_IP_NUMHOOKS]; - - // The same as struct ipt_getinfo.underflow. - unsigned int underflow[NF_IP_NUMHOOKS]; - - // The number of counters, which should equal the number of entries. - unsigned int num_counters; - - // The unchanged values from each ipt_entry's counters. - struct xt_counters* counters; - - // The entries to write to the table. This will run past the size defined by - // sizeof(srtuct ipt_replace); - struct ipt_entry entries[0]; -}; - -#endif // GVISOR_TEST_SYSCALLS_IPTABLES_TYPES_H_ diff --git a/test/syscalls/linux/itimer.cc b/test/syscalls/linux/itimer.cc deleted file mode 100644 index b77e4cbd1..000000000 --- a/test/syscalls/linux/itimer.cc +++ /dev/null @@ -1,354 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <signal.h> -#include <sys/socket.h> -#include <sys/time.h> -#include <sys/types.h> -#include <time.h> - -#include <atomic> -#include <functional> -#include <iostream> -#include <vector> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "absl/strings/string_view.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/util/file_descriptor.h" -#include "test/util/logging.h" -#include "test/util/multiprocess_util.h" -#include "test/util/posix_error.h" -#include "test/util/signal_util.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" -#include "test/util/timer_util.h" - -namespace gvisor { -namespace testing { -namespace { - -constexpr char kSIGALRMToMainThread[] = "--itimer_sigarlm_to_main_thread"; -constexpr char kSIGPROFFairnessActive[] = "--itimer_sigprof_fairness_active"; -constexpr char kSIGPROFFairnessIdle[] = "--itimer_sigprof_fairness_idle"; - -// Time period to be set for the itimers. -constexpr absl::Duration kPeriod = absl::Milliseconds(25); -// Total amount of time to spend per thread. -constexpr absl::Duration kTestDuration = absl::Seconds(20); -// Amount of spin iterations to perform as the minimum work item per thread. -// Chosen to be sub-millisecond range. -constexpr int kIterations = 10000000; -// Allow deviation in the number of samples. -constexpr double kNumSamplesDeviationRatio = 0.2; - -TEST(ItimerTest, ItimervalUpdatedBeforeExpiration) { - constexpr int kSleepSecs = 10; - constexpr int kAlarmSecs = 15; - static_assert( - kSleepSecs < kAlarmSecs, - "kSleepSecs must be less than kAlarmSecs for the test to be meaningful"); - constexpr int kMaxRemainingSecs = kAlarmSecs - kSleepSecs; - - // Install a no-op handler for SIGALRM. - struct sigaction sa = {}; - sigfillset(&sa.sa_mask); - sa.sa_handler = +[](int signo) {}; - auto const cleanup_sa = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGALRM, sa)); - - // Set an itimer-based alarm for kAlarmSecs from now. - struct itimerval itv = {}; - itv.it_value.tv_sec = kAlarmSecs; - auto const cleanup_itimer = - ASSERT_NO_ERRNO_AND_VALUE(ScopedItimer(ITIMER_REAL, itv)); - - // After sleeping for kSleepSecs, the itimer value should reflect the elapsed - // time even if it hasn't expired. - absl::SleepFor(absl::Seconds(kSleepSecs)); - ASSERT_THAT(getitimer(ITIMER_REAL, &itv), SyscallSucceeds()); - EXPECT_TRUE( - itv.it_value.tv_sec < kMaxRemainingSecs || - (itv.it_value.tv_sec == kMaxRemainingSecs && itv.it_value.tv_usec == 0)) - << "Remaining time: " << itv.it_value.tv_sec << " seconds + " - << itv.it_value.tv_usec << " microseconds"; -} - -ABSL_CONST_INIT static thread_local std::atomic_int signal_test_num_samples = - ATOMIC_VAR_INIT(0); - -void SignalTestSignalHandler(int /*signum*/) { signal_test_num_samples++; } - -struct SignalTestResult { - int expected_total; - int main_thread_samples; - std::vector<int> worker_samples; -}; - -std::ostream& operator<<(std::ostream& os, const SignalTestResult& r) { - os << "{expected_total: " << r.expected_total - << ", main_thread_samples: " << r.main_thread_samples - << ", worker_samples: ["; - bool first = true; - for (int sample : r.worker_samples) { - if (!first) { - os << ", "; - } - os << sample; - first = false; - } - os << "]}"; - return os; -} - -// Starts two worker threads and itimer id and measures the number of signal -// delivered to each thread. -SignalTestResult ItimerSignalTest(int id, clock_t main_clock, - clock_t worker_clock, int signal, - absl::Duration sleep) { - signal_test_num_samples = 0; - - struct sigaction sa = {}; - sa.sa_handler = &SignalTestSignalHandler; - sa.sa_flags = SA_RESTART; - sigemptyset(&sa.sa_mask); - auto sigaction_cleanup = ScopedSigaction(signal, sa).ValueOrDie(); - - int socketfds[2]; - TEST_PCHECK(socketpair(AF_UNIX, SOCK_STREAM, 0, socketfds) == 0); - - // Do the spinning in the workers. - std::function<void*(int)> work = [&](int socket_fd) { - FileDescriptor fd(socket_fd); - - absl::Time finish = Now(worker_clock) + kTestDuration; - while (Now(worker_clock) < finish) { - // Blocked on read. - char c; - RetryEINTR(read)(fd.get(), &c, 1); - for (int i = 0; i < kIterations; i++) { - // Ensure compiler won't optimize this loop away. - asm(""); - } - - if (sleep != absl::ZeroDuration()) { - // Sleep so that the entire process is idle for a while. - absl::SleepFor(sleep); - } - - // Unblock the other thread. - RetryEINTR(write)(fd.get(), &c, 1); - } - - return reinterpret_cast<void*>(signal_test_num_samples.load()); - }; - - ScopedThread th1( - static_cast<std::function<void*()>>(std::bind(work, socketfds[0]))); - ScopedThread th2( - static_cast<std::function<void*()>>(std::bind(work, socketfds[1]))); - - absl::Time start = Now(main_clock); - // Start the timer. - struct itimerval timer = {}; - timer.it_value = absl::ToTimeval(kPeriod); - timer.it_interval = absl::ToTimeval(kPeriod); - auto cleanup_itimer = ScopedItimer(id, timer).ValueOrDie(); - - // Unblock th1. - // - // N.B. th2 owns socketfds[1] but can't close it until it unblocks. - char c = 0; - TEST_CHECK(write(socketfds[1], &c, 1) == 1); - - SignalTestResult result; - - // Wait for the workers to be done and collect their sample counts. - result.worker_samples.push_back(reinterpret_cast<int64_t>(th1.Join())); - result.worker_samples.push_back(reinterpret_cast<int64_t>(th2.Join())); - cleanup_itimer.Release()(); - result.expected_total = (Now(main_clock) - start) / kPeriod; - result.main_thread_samples = signal_test_num_samples.load(); - - return result; -} - -int TestSIGALRMToMainThread() { - SignalTestResult result = - ItimerSignalTest(ITIMER_REAL, CLOCK_REALTIME, CLOCK_REALTIME, SIGALRM, - absl::ZeroDuration()); - - std::cerr << "result: " << result << std::endl; - - // ITIMER_REAL-generated SIGALRMs prefer to deliver to the thread group leader - // (but don't guarantee it), so we expect to see most samples on the main - // thread. - // - // The number of SIGALRMs delivered to a worker should not exceed 20% - // of the number of total signals expected (this is somewhat arbitrary). - const int worker_threshold = result.expected_total / 5; - - // - // Linux only guarantees timers will never expire before the requested time. - // Thus, we only check the upper bound and also it at least have one sample. - TEST_CHECK(result.main_thread_samples <= result.expected_total); - TEST_CHECK(result.main_thread_samples > 0); - for (int num : result.worker_samples) { - TEST_CHECK_MSG(num <= worker_threshold, "worker received too many samples"); - } - - return 0; -} - -// Random save/restore is disabled as it introduces additional latency and -// unpredictable distribution patterns. -TEST(ItimerTest, DeliversSIGALRMToMainThread_NoRandomSave) { - pid_t child; - int execve_errno; - auto kill = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec("/proc/self/exe", {"/proc/self/exe", kSIGALRMToMainThread}, - {}, &child, &execve_errno)); - EXPECT_EQ(0, execve_errno); - - int status; - EXPECT_THAT(RetryEINTR(waitpid)(child, &status, 0), - SyscallSucceedsWithValue(child)); - - // Not required anymore. - kill.Release(); - - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) << status; -} - -// Signals are delivered to threads fairly. -// -// sleep indicates how long to sleep worker threads each iteration to make the -// entire process idle. -int TestSIGPROFFairness(absl::Duration sleep) { - SignalTestResult result = - ItimerSignalTest(ITIMER_PROF, CLOCK_PROCESS_CPUTIME_ID, - CLOCK_THREAD_CPUTIME_ID, SIGPROF, sleep); - - std::cerr << "result: " << result << std::endl; - - // The number of samples on the main thread should be very low as it did - // nothing. - TEST_CHECK(result.main_thread_samples < 60); - - // Both workers should get roughly equal number of samples. - TEST_CHECK(result.worker_samples.size() == 2); - - TEST_CHECK(result.expected_total > 0); - - // In an ideal world each thread would get exactly 50% of the signals, - // but since that's unlikely to happen we allow for them to get no less than - // kNumSamplesDeviationRatio of the total observed samples. - TEST_CHECK_MSG(std::abs(result.worker_samples[0] - result.worker_samples[1]) < - ((result.worker_samples[0] + result.worker_samples[1]) * - kNumSamplesDeviationRatio), - "one worker received disproportionate share of samples"); - - return 0; -} - -// Random save/restore is disabled as it introduces additional latency and -// unpredictable distribution patterns. -TEST(ItimerTest, DeliversSIGPROFToThreadsRoughlyFairlyActive_NoRandomSave) { - // TODO(b/143247272): CPU time accounting is inaccurate for the KVM platform. - SKIP_IF(GvisorPlatform() == Platform::kKVM); - - pid_t child; - int execve_errno; - auto kill = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec("/proc/self/exe", {"/proc/self/exe", kSIGPROFFairnessActive}, - {}, &child, &execve_errno)); - EXPECT_EQ(0, execve_errno); - - int status; - EXPECT_THAT(RetryEINTR(waitpid)(child, &status, 0), - SyscallSucceedsWithValue(child)); - - // Not required anymore. - kill.Release(); - - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << "Exited with code: " << status; -} - -// Random save/restore is disabled as it introduces additional latency and -// unpredictable distribution patterns. -TEST(ItimerTest, DeliversSIGPROFToThreadsRoughlyFairlyIdle_NoRandomSave) { - // TODO(b/143247272): CPU time accounting is inaccurate for the KVM platform. - SKIP_IF(GvisorPlatform() == Platform::kKVM); - - pid_t child; - int execve_errno; - auto kill = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec("/proc/self/exe", {"/proc/self/exe", kSIGPROFFairnessIdle}, - {}, &child, &execve_errno)); - EXPECT_EQ(0, execve_errno); - - int status; - EXPECT_THAT(RetryEINTR(waitpid)(child, &status, 0), - SyscallSucceedsWithValue(child)); - - // Not required anymore. - kill.Release(); - - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << "Exited with code: " << status; -} - -} // namespace -} // namespace testing -} // namespace gvisor - -namespace { -void MaskSIGPIPE() { - // Always mask SIGPIPE as it's common and tests aren't expected to handle it. - // We don't take the TestInit() path so we must do this manually. - struct sigaction sa = {}; - sa.sa_handler = SIG_IGN; - TEST_CHECK(sigaction(SIGPIPE, &sa, nullptr) == 0); -} -} // namespace - -int main(int argc, char** argv) { - // These tests require no background threads, so check for them before - // TestInit. - for (int i = 0; i < argc; i++) { - absl::string_view arg(argv[i]); - - if (arg == gvisor::testing::kSIGALRMToMainThread) { - MaskSIGPIPE(); - return gvisor::testing::TestSIGALRMToMainThread(); - } - if (arg == gvisor::testing::kSIGPROFFairnessActive) { - MaskSIGPIPE(); - return gvisor::testing::TestSIGPROFFairness(absl::ZeroDuration()); - } - if (arg == gvisor::testing::kSIGPROFFairnessIdle) { - MaskSIGPIPE(); - // Sleep time > ClockTick (10ms) exercises sleeping gVisor's - // kernel.cpuClockTicker. - return gvisor::testing::TestSIGPROFFairness(absl::Milliseconds(25)); - } - } - - gvisor::testing::TestInit(&argc, &argv); - - return RUN_ALL_TESTS(); -} diff --git a/test/syscalls/linux/kill.cc b/test/syscalls/linux/kill.cc deleted file mode 100644 index db29bd59c..000000000 --- a/test/syscalls/linux/kill.cc +++ /dev/null @@ -1,383 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <sys/syscall.h> -#include <sys/types.h> -#include <unistd.h> - -#include <cerrno> -#include <csignal> - -#include "gtest/gtest.h" -#include "absl/flags/flag.h" -#include "absl/synchronization/mutex.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/util/capability_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/logging.h" -#include "test/util/signal_util.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -ABSL_FLAG(int32_t, scratch_uid, 65534, "scratch UID"); -ABSL_FLAG(int32_t, scratch_gid, 65534, "scratch GID"); - -using ::testing::Ge; - -namespace gvisor { -namespace testing { - -namespace { - -TEST(KillTest, CanKillValidPid) { - // If pid is positive, then signal sig is sent to the process with the ID - // specified by pid. - EXPECT_THAT(kill(getpid(), 0), SyscallSucceeds()); - // If pid equals 0, then sig is sent to every process in the process group of - // the calling process. - EXPECT_THAT(kill(0, 0), SyscallSucceeds()); - - ScopedThread([] { EXPECT_THAT(kill(gettid(), 0), SyscallSucceeds()); }); -} - -void SigHandler(int sig, siginfo_t* info, void* context) { _exit(0); } - -// If pid equals -1, then sig is sent to every process for which the calling -// process has permission to send signals, except for process 1 (init). -TEST(KillTest, CanKillAllPIDs) { - int pipe_fds[2]; - ASSERT_THAT(pipe(pipe_fds), SyscallSucceeds()); - FileDescriptor read_fd(pipe_fds[0]); - FileDescriptor write_fd(pipe_fds[1]); - - pid_t pid = fork(); - if (pid == 0) { - read_fd.reset(); - - struct sigaction sa; - sa.sa_sigaction = SigHandler; - sigfillset(&sa.sa_mask); - sa.sa_flags = SA_SIGINFO; - TEST_PCHECK(sigaction(SIGWINCH, &sa, nullptr) == 0); - MaybeSave(); - - // Indicate to the parent that we're ready. - write_fd.reset(); - - // Wait until we get the signal from the parent. - while (true) { - pause(); - } - } - - ASSERT_THAT(pid, SyscallSucceeds()); - - write_fd.reset(); - - // Wait for the child to indicate that it's unmasked the signal by closing - // the write end. - char buf; - ASSERT_THAT(ReadFd(read_fd.get(), &buf, 1), SyscallSucceedsWithValue(0)); - - // Signal the child and wait for it to die with status 0, indicating that - // it got the expected signal. - EXPECT_THAT(kill(-1, SIGWINCH), SyscallSucceeds()); - - int status; - ASSERT_THAT(RetryEINTR(waitpid)(pid, &status, 0), - SyscallSucceedsWithValue(pid)); - EXPECT_TRUE(WIFEXITED(status)); - EXPECT_EQ(0, WEXITSTATUS(status)); -} - -TEST(KillTest, CannotKillInvalidPID) { - // We need an unused pid to verify that kill fails when given one. - // - // There is no way to guarantee that a PID is unused, but the PID of a - // recently exited process likely won't be reused soon. - pid_t fake_pid = fork(); - if (fake_pid == 0) { - _exit(0); - } - - ASSERT_THAT(fake_pid, SyscallSucceeds()); - - int status; - ASSERT_THAT(RetryEINTR(waitpid)(fake_pid, &status, 0), - SyscallSucceedsWithValue(fake_pid)); - EXPECT_TRUE(WIFEXITED(status)); - EXPECT_EQ(0, WEXITSTATUS(status)); - - EXPECT_THAT(kill(fake_pid, 0), SyscallFailsWithErrno(ESRCH)); -} - -TEST(KillTest, CannotUseInvalidSignal) { - EXPECT_THAT(kill(getpid(), 200), SyscallFailsWithErrno(EINVAL)); -} - -TEST(KillTest, CanKillRemoteProcess) { - pid_t pid = fork(); - if (pid == 0) { - while (true) { - pause(); - } - } - - ASSERT_THAT(pid, SyscallSucceeds()); - - EXPECT_THAT(kill(pid, SIGKILL), SyscallSucceeds()); - - int status; - ASSERT_THAT(RetryEINTR(waitpid)(pid, &status, 0), - SyscallSucceedsWithValue(pid)); - EXPECT_TRUE(WIFSIGNALED(status)); - EXPECT_EQ(SIGKILL, WTERMSIG(status)); -} - -TEST(KillTest, CanKillOwnProcess) { - EXPECT_THAT(kill(getpid(), 0), SyscallSucceeds()); -} - -// Verify that you can kill a process even using a tid from a thread other than -// the group leader. -TEST(KillTest, CannotKillTid) { - pid_t tid; - bool tid_available = false; - bool finished = false; - absl::Mutex mu; - ScopedThread t([&] { - mu.Lock(); - tid = gettid(); - tid_available = true; - mu.Await(absl::Condition(&finished)); - mu.Unlock(); - }); - mu.LockWhen(absl::Condition(&tid_available)); - EXPECT_THAT(kill(tid, 0), SyscallSucceeds()); - finished = true; - mu.Unlock(); -} - -TEST(KillTest, SetPgid) { - for (int i = 0; i < 10; i++) { - // The following in the normal pattern for creating a new process group. - // Both the parent and child process will call setpgid in order to avoid any - // race conditions. We do this ten times to catch races. - pid_t pid = fork(); - if (pid == 0) { - setpgid(0, 0); - while (true) { - pause(); - } - } - - ASSERT_THAT(pid, SyscallSucceeds()); - - // Set the child's group and exit. - ASSERT_THAT(setpgid(pid, pid), SyscallSucceeds()); - EXPECT_THAT(kill(pid, SIGKILL), SyscallSucceeds()); - - int status; - EXPECT_THAT(RetryEINTR(waitpid)(-pid, &status, 0), - SyscallSucceedsWithValue(pid)); - EXPECT_TRUE(WIFSIGNALED(status)); - EXPECT_EQ(SIGKILL, WTERMSIG(status)); - } -} - -TEST(KillTest, ProcessGroups) { - // Fork a new child. - // - // other_child is used as a placeholder process. We use this PID as our "does - // not exist" process group to ensure some amount of safety. (It is still - // possible to violate this assumption, but extremely unlikely.) - pid_t child = fork(); - if (child == 0) { - while (true) { - pause(); - } - } - ASSERT_THAT(child, SyscallSucceeds()); - - pid_t other_child = fork(); - if (other_child == 0) { - while (true) { - pause(); - } - } - ASSERT_THAT(other_child, SyscallSucceeds()); - - // Ensure the kill does not succeed without the new group. - EXPECT_THAT(kill(-child, SIGKILL), SyscallFailsWithErrno(ESRCH)); - - // Put the child in its own process group. - ASSERT_THAT(setpgid(child, child), SyscallSucceeds()); - - // This should be not allowed: you can only create a new group with the same - // id or join an existing one. The other_child group should not exist. - ASSERT_THAT(setpgid(child, other_child), SyscallFailsWithErrno(EPERM)); - - // Done with other_child; kill it. - EXPECT_THAT(kill(other_child, SIGKILL), SyscallSucceeds()); - int status; - EXPECT_THAT(RetryEINTR(waitpid)(other_child, &status, 0), SyscallSucceeds()); - - // Linux returns success for the no-op call. - ASSERT_THAT(setpgid(child, child), SyscallSucceeds()); - - // Kill the child's process group. - ASSERT_THAT(kill(-child, SIGKILL), SyscallSucceeds()); - - // Wait on the process group; ensure that the signal was as expected. - EXPECT_THAT(RetryEINTR(waitpid)(-child, &status, 0), - SyscallSucceedsWithValue(child)); - EXPECT_TRUE(WIFSIGNALED(status)); - EXPECT_EQ(SIGKILL, WTERMSIG(status)); - - // Try to kill the process group again; ensure that the wait fails. - EXPECT_THAT(kill(-child, SIGKILL), SyscallFailsWithErrno(ESRCH)); - EXPECT_THAT(RetryEINTR(waitpid)(-child, &status, 0), - SyscallFailsWithErrno(ECHILD)); -} - -TEST(KillTest, ChildDropsPrivsCannotKill) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SETUID))); - - const int uid = absl::GetFlag(FLAGS_scratch_uid); - const int gid = absl::GetFlag(FLAGS_scratch_gid); - - // Create the child that drops privileges and tries to kill the parent. - pid_t pid = fork(); - if (pid == 0) { - TEST_PCHECK(setresgid(gid, gid, gid) == 0); - MaybeSave(); - - TEST_PCHECK(setresuid(uid, uid, uid) == 0); - MaybeSave(); - - // setresuid should have dropped CAP_KILL. Make sure. - TEST_CHECK(!HaveCapability(CAP_KILL).ValueOrDie()); - - // Try to kill parent with every signal-sending syscall possible. - pid_t parent = getppid(); - - TEST_CHECK(kill(parent, SIGKILL) < 0); - TEST_PCHECK_MSG(errno == EPERM, "kill failed with wrong errno"); - MaybeSave(); - - TEST_CHECK(tgkill(parent, parent, SIGKILL) < 0); - TEST_PCHECK_MSG(errno == EPERM, "tgkill failed with wrong errno"); - MaybeSave(); - - TEST_CHECK(syscall(SYS_tkill, parent, SIGKILL) < 0); - TEST_PCHECK_MSG(errno == EPERM, "tkill failed with wrong errno"); - MaybeSave(); - - siginfo_t uinfo; - uinfo.si_code = -1; // SI_QUEUE (allowed). - - TEST_CHECK(syscall(SYS_rt_sigqueueinfo, parent, SIGKILL, &uinfo) < 0); - TEST_PCHECK_MSG(errno == EPERM, "rt_sigqueueinfo failed with wrong errno"); - MaybeSave(); - - TEST_CHECK(syscall(SYS_rt_tgsigqueueinfo, parent, parent, SIGKILL, &uinfo) < - 0); - TEST_PCHECK_MSG(errno == EPERM, "rt_sigqueueinfo failed with wrong errno"); - MaybeSave(); - - _exit(0); - } - - ASSERT_THAT(pid, SyscallSucceeds()); - - int status; - EXPECT_THAT(RetryEINTR(waitpid)(pid, &status, 0), - SyscallSucceedsWithValue(pid)); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << "status = " << status; -} - -TEST(KillTest, CanSIGCONTSameSession) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SETUID))); - - pid_t stopped_child = fork(); - if (stopped_child == 0) { - raise(SIGSTOP); - _exit(0); - } - - ASSERT_THAT(stopped_child, SyscallSucceeds()); - - // Put the child in its own process group. The child and parent process - // groups also share a session. - ASSERT_THAT(setpgid(stopped_child, stopped_child), SyscallSucceeds()); - - // Make sure child stopped. - int status; - EXPECT_THAT(RetryEINTR(waitpid)(stopped_child, &status, WUNTRACED), - SyscallSucceedsWithValue(stopped_child)); - EXPECT_TRUE(WIFSTOPPED(status) && WSTOPSIG(status) == SIGSTOP) - << "status " << status; - - const int uid = absl::GetFlag(FLAGS_scratch_uid); - const int gid = absl::GetFlag(FLAGS_scratch_gid); - - // Drop privileges only in child process, or else this parent process won't be - // able to open some log files after the test ends. - pid_t other_child = fork(); - if (other_child == 0) { - // Drop privileges. - TEST_PCHECK(setresgid(gid, gid, gid) == 0); - MaybeSave(); - - TEST_PCHECK(setresuid(uid, uid, uid) == 0); - MaybeSave(); - - // setresuid should have dropped CAP_KILL. - TEST_CHECK(!HaveCapability(CAP_KILL).ValueOrDie()); - - // Child 2 and child should now not share a thread group and any UIDs. - // Child 2 should have no privileges. That means any signal other than - // SIGCONT should fail. - TEST_CHECK(kill(stopped_child, SIGKILL) < 0); - TEST_PCHECK_MSG(errno == EPERM, "kill failed with wrong errno"); - MaybeSave(); - - TEST_PCHECK(kill(stopped_child, SIGCONT) == 0); - MaybeSave(); - - _exit(0); - } - - ASSERT_THAT(stopped_child, SyscallSucceeds()); - - // Make sure child exited normally. - EXPECT_THAT(RetryEINTR(waitpid)(stopped_child, &status, 0), - SyscallSucceedsWithValue(stopped_child)); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << "status " << status; - - // Make sure other_child exited normally. - EXPECT_THAT(RetryEINTR(waitpid)(other_child, &status, 0), - SyscallSucceedsWithValue(other_child)); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << "status " << status; -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/link.cc b/test/syscalls/linux/link.cc deleted file mode 100644 index e74fa2ed5..000000000 --- a/test/syscalls/linux/link.cc +++ /dev/null @@ -1,294 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <fcntl.h> -#include <string.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <unistd.h> - -#include <string> - -#include "gtest/gtest.h" -#include "absl/flags/flag.h" -#include "absl/strings/str_cat.h" -#include "test/util/capability_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/fs_util.h" -#include "test/util/posix_error.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -ABSL_FLAG(int32_t, scratch_uid, 65534, "scratch UID"); - -namespace gvisor { -namespace testing { - -namespace { - -// IsSameFile returns true if both filenames have the same device and inode. -bool IsSameFile(const std::string& f1, const std::string& f2) { - // Use lstat rather than stat, so that symlinks are not followed. - struct stat stat1 = {}; - EXPECT_THAT(lstat(f1.c_str(), &stat1), SyscallSucceeds()); - struct stat stat2 = {}; - EXPECT_THAT(lstat(f2.c_str(), &stat2), SyscallSucceeds()); - - return stat1.st_dev == stat2.st_dev && stat1.st_ino == stat2.st_ino; -} - -TEST(LinkTest, CanCreateLinkFile) { - auto oldfile = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const std::string newname = NewTempAbsPath(); - - // Get the initial link count. - uint64_t initial_link_count = - ASSERT_NO_ERRNO_AND_VALUE(Links(oldfile.path())); - - EXPECT_THAT(link(oldfile.path().c_str(), newname.c_str()), SyscallSucceeds()); - - EXPECT_TRUE(IsSameFile(oldfile.path(), newname)); - - // Link count should be incremented. - EXPECT_THAT(Links(oldfile.path()), - IsPosixErrorOkAndHolds(initial_link_count + 1)); - - // Delete the link. - EXPECT_THAT(unlink(newname.c_str()), SyscallSucceeds()); - - // Link count should be back to initial. - EXPECT_THAT(Links(oldfile.path()), - IsPosixErrorOkAndHolds(initial_link_count)); -} - -TEST(LinkTest, PermissionDenied) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_FOWNER))); - - // Make the file "unsafe" to link by making it only readable, but not - // writable. - const auto oldfile = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileMode(0400)); - const std::string newname = NewTempAbsPath(); - - // Do setuid in a separate thread so that after finishing this test, the - // process can still open files the test harness created before starting this - // test. Otherwise, the files are created by root (UID before the test), but - // cannot be opened by the `uid` set below after the test. After calling - // setuid(non-zero-UID), there is no way to get root privileges back. - ScopedThread([&] { - // Use syscall instead of glibc setuid wrapper because we want this setuid - // call to only apply to this task. POSIX threads, however, require that all - // threads have the same UIDs, so using the setuid wrapper sets all threads' - // real UID. - // Also drops capabilities. - EXPECT_THAT(syscall(SYS_setuid, absl::GetFlag(FLAGS_scratch_uid)), - SyscallSucceeds()); - - EXPECT_THAT(link(oldfile.path().c_str(), newname.c_str()), - SyscallFailsWithErrno(EPERM)); - }); -} - -TEST(LinkTest, CannotLinkDirectory) { - auto olddir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const std::string newdir = NewTempAbsPath(); - - EXPECT_THAT(link(olddir.path().c_str(), newdir.c_str()), - SyscallFailsWithErrno(EPERM)); - - EXPECT_THAT(rmdir(olddir.path().c_str()), SyscallSucceeds()); -} - -TEST(LinkTest, CannotLinkWithSlash) { - auto oldfile = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - // Put a final "/" on newname. - const std::string newname = absl::StrCat(NewTempAbsPath(), "/"); - - EXPECT_THAT(link(oldfile.path().c_str(), newname.c_str()), - SyscallFailsWithErrno(ENOENT)); -} - -TEST(LinkTest, OldnameIsEmpty) { - const std::string newname = NewTempAbsPath(); - EXPECT_THAT(link("", newname.c_str()), SyscallFailsWithErrno(ENOENT)); -} - -TEST(LinkTest, OldnameDoesNotExist) { - const std::string oldname = NewTempAbsPath(); - const std::string newname = NewTempAbsPath(); - EXPECT_THAT(link("", newname.c_str()), SyscallFailsWithErrno(ENOENT)); -} - -TEST(LinkTest, NewnameCannotExist) { - const std::string newname = - JoinPath(GetAbsoluteTestTmpdir(), "thisdoesnotexist", "foo"); - EXPECT_THAT(link("/thisdoesnotmatter", newname.c_str()), - SyscallFailsWithErrno(ENOENT)); -} - -TEST(LinkTest, WithOldDirFD) { - const std::string oldname_parent = NewTempAbsPath(); - const std::string oldname_base = "child"; - const std::string oldname = JoinPath(oldname_parent, oldname_base); - const std::string newname = NewTempAbsPath(); - - // Create oldname_parent directory, and get an FD. - ASSERT_THAT(mkdir(oldname_parent.c_str(), 0777), SyscallSucceeds()); - const FileDescriptor oldname_parent_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(oldname_parent, O_DIRECTORY | O_RDONLY)); - - // Create oldname file. - const FileDescriptor oldname_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(oldname, O_CREAT | O_RDWR, 0666)); - - // Link oldname to newname, using oldname_parent_fd. - EXPECT_THAT(linkat(oldname_parent_fd.get(), oldname_base.c_str(), AT_FDCWD, - newname.c_str(), 0), - SyscallSucceeds()); - - EXPECT_TRUE(IsSameFile(oldname, newname)); - - EXPECT_THAT(unlink(newname.c_str()), SyscallSucceeds()); - EXPECT_THAT(unlink(oldname.c_str()), SyscallSucceeds()); - EXPECT_THAT(rmdir(oldname_parent.c_str()), SyscallSucceeds()); -} - -TEST(LinkTest, BogusFlags) { - ASSERT_THAT(linkat(1, "foo", 2, "bar", 3), SyscallFailsWithErrno(EINVAL)); -} - -TEST(LinkTest, WithNewDirFD) { - auto oldfile = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const std::string newname_parent = NewTempAbsPath(); - const std::string newname_base = "child"; - const std::string newname = JoinPath(newname_parent, newname_base); - - // Create newname_parent directory, and get an FD. - EXPECT_THAT(mkdir(newname_parent.c_str(), 0777), SyscallSucceeds()); - const FileDescriptor newname_parent_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(newname_parent, O_DIRECTORY | O_RDONLY)); - - // Link newname to oldfile, using newname_parent_fd. - EXPECT_THAT(linkat(AT_FDCWD, oldfile.path().c_str(), newname_parent_fd.get(), - newname.c_str(), 0), - SyscallSucceeds()); - - EXPECT_TRUE(IsSameFile(oldfile.path(), newname)); - - EXPECT_THAT(unlink(newname.c_str()), SyscallSucceeds()); - EXPECT_THAT(rmdir(newname_parent.c_str()), SyscallSucceeds()); -} - -TEST(LinkTest, RelPathsWithNonDirFDs) { - auto oldfile = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - - // Create a file that will be passed as the directory fd for old/new names. - const std::string filename = NewTempAbsPath(); - const FileDescriptor file_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(filename, O_CREAT | O_RDWR, 0666)); - - // Using file_fd as olddirfd will fail. - EXPECT_THAT(linkat(file_fd.get(), "foo", AT_FDCWD, "bar", 0), - SyscallFailsWithErrno(ENOTDIR)); - - // Using file_fd as newdirfd will fail. - EXPECT_THAT(linkat(AT_FDCWD, oldfile.path().c_str(), file_fd.get(), "bar", 0), - SyscallFailsWithErrno(ENOTDIR)); -} - -TEST(LinkTest, AbsPathsWithNonDirFDs) { - auto oldfile = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const std::string newname = NewTempAbsPath(); - - // Create a file that will be passed as the directory fd for old/new names. - const std::string filename = NewTempAbsPath(); - const FileDescriptor file_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(filename, O_CREAT | O_RDWR, 0666)); - - // Using file_fd as the dirfds is OK as long as paths are absolute. - EXPECT_THAT(linkat(file_fd.get(), oldfile.path().c_str(), file_fd.get(), - newname.c_str(), 0), - SyscallSucceeds()); -} - -TEST(LinkTest, LinkDoesNotFollowSymlinks) { - // Create oldfile, and oldsymlink which points to it. - auto oldfile = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const std::string oldsymlink = NewTempAbsPath(); - EXPECT_THAT(symlink(oldfile.path().c_str(), oldsymlink.c_str()), - SyscallSucceeds()); - - // Now hard link newname to oldsymlink. - const std::string newname = NewTempAbsPath(); - EXPECT_THAT(link(oldsymlink.c_str(), newname.c_str()), SyscallSucceeds()); - - // The link should not have resolved the symlink, so newname and oldsymlink - // are the same. - EXPECT_TRUE(IsSameFile(oldsymlink, newname)); - EXPECT_FALSE(IsSameFile(oldfile.path(), newname)); - - EXPECT_THAT(unlink(oldsymlink.c_str()), SyscallSucceeds()); - EXPECT_THAT(unlink(newname.c_str()), SyscallSucceeds()); -} - -TEST(LinkTest, LinkatDoesNotFollowSymlinkByDefault) { - // Create oldfile, and oldsymlink which points to it. - auto oldfile = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const std::string oldsymlink = NewTempAbsPath(); - EXPECT_THAT(symlink(oldfile.path().c_str(), oldsymlink.c_str()), - SyscallSucceeds()); - - // Now hard link newname to oldsymlink. - const std::string newname = NewTempAbsPath(); - EXPECT_THAT( - linkat(AT_FDCWD, oldsymlink.c_str(), AT_FDCWD, newname.c_str(), 0), - SyscallSucceeds()); - - // The link should not have resolved the symlink, so newname and oldsymlink - // are the same. - EXPECT_TRUE(IsSameFile(oldsymlink, newname)); - EXPECT_FALSE(IsSameFile(oldfile.path(), newname)); - - EXPECT_THAT(unlink(oldsymlink.c_str()), SyscallSucceeds()); - EXPECT_THAT(unlink(newname.c_str()), SyscallSucceeds()); -} - -TEST(LinkTest, LinkatWithSymlinkFollow) { - // Create oldfile, and oldsymlink which points to it. - auto oldfile = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const std::string oldsymlink = NewTempAbsPath(); - ASSERT_THAT(symlink(oldfile.path().c_str(), oldsymlink.c_str()), - SyscallSucceeds()); - - // Now hard link newname to oldsymlink, and pass AT_SYMLINK_FOLLOW flag. - const std::string newname = NewTempAbsPath(); - ASSERT_THAT(linkat(AT_FDCWD, oldsymlink.c_str(), AT_FDCWD, newname.c_str(), - AT_SYMLINK_FOLLOW), - SyscallSucceeds()); - - // The link should have resolved the symlink, so oldfile and newname are the - // same. - EXPECT_TRUE(IsSameFile(oldfile.path(), newname)); - EXPECT_FALSE(IsSameFile(oldsymlink, newname)); - - EXPECT_THAT(unlink(oldsymlink.c_str()), SyscallSucceeds()); - EXPECT_THAT(unlink(newname.c_str()), SyscallSucceeds()); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/lseek.cc b/test/syscalls/linux/lseek.cc deleted file mode 100644 index a8af8e545..000000000 --- a/test/syscalls/linux/lseek.cc +++ /dev/null @@ -1,202 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <fcntl.h> -#include <stdlib.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "test/util/file_descriptor.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -TEST(LseekTest, InvalidWhence) { - const std::string kFileData = "hello world\n"; - const TempPath path = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), kFileData, TempPath::kDefaultFileMode)); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(path.path(), O_RDWR, 0644)); - - ASSERT_THAT(lseek(fd.get(), 0, -1), SyscallFailsWithErrno(EINVAL)); -} - -TEST(LseekTest, NegativeOffset) { - const std::string kFileData = "hello world\n"; - const TempPath path = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), kFileData, TempPath::kDefaultFileMode)); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(path.path(), O_RDWR, 0644)); - - EXPECT_THAT(lseek(fd.get(), -(kFileData.length() + 1), SEEK_CUR), - SyscallFailsWithErrno(EINVAL)); -} - -// A 32-bit off_t is not large enough to represent an offset larger than -// maximum file size on standard file systems, so it isn't possible to cause -// overflow. -#ifdef __x86_64__ -TEST(LseekTest, Overflow) { - // HA! Classic Linux. We really should have an EOVERFLOW - // here, since we're seeking to something that cannot be - // represented.. but instead we are given an EINVAL. - const std::string kFileData = "hello world\n"; - const TempPath path = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), kFileData, TempPath::kDefaultFileMode)); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(path.path(), O_RDWR, 0644)); - EXPECT_THAT(lseek(fd.get(), 0x7fffffffffffffff, SEEK_END), - SyscallFailsWithErrno(EINVAL)); -} -#endif - -TEST(LseekTest, Set) { - const std::string kFileData = "hello world\n"; - const TempPath path = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), kFileData, TempPath::kDefaultFileMode)); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(path.path(), O_RDWR, 0644)); - - char buf = '\0'; - EXPECT_THAT(lseek(fd.get(), 0, SEEK_SET), SyscallSucceedsWithValue(0)); - ASSERT_THAT(read(fd.get(), &buf, 1), SyscallSucceedsWithValue(1)); - EXPECT_EQ(buf, kFileData.c_str()[0]); - EXPECT_THAT(lseek(fd.get(), 6, SEEK_SET), SyscallSucceedsWithValue(6)); - ASSERT_THAT(read(fd.get(), &buf, 1), SyscallSucceedsWithValue(1)); - EXPECT_EQ(buf, kFileData.c_str()[6]); -} - -TEST(LseekTest, Cur) { - const std::string kFileData = "hello world\n"; - const TempPath path = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), kFileData, TempPath::kDefaultFileMode)); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(path.path(), O_RDWR, 0644)); - - char buf = '\0'; - EXPECT_THAT(lseek(fd.get(), 0, SEEK_SET), SyscallSucceedsWithValue(0)); - ASSERT_THAT(read(fd.get(), &buf, 1), SyscallSucceedsWithValue(1)); - EXPECT_EQ(buf, kFileData.c_str()[0]); - EXPECT_THAT(lseek(fd.get(), 3, SEEK_CUR), SyscallSucceedsWithValue(4)); - ASSERT_THAT(read(fd.get(), &buf, 1), SyscallSucceedsWithValue(1)); - EXPECT_EQ(buf, kFileData.c_str()[4]); -} - -TEST(LseekTest, End) { - const std::string kFileData = "hello world\n"; - const TempPath path = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), kFileData, TempPath::kDefaultFileMode)); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(path.path(), O_RDWR, 0644)); - - char buf = '\0'; - EXPECT_THAT(lseek(fd.get(), 0, SEEK_SET), SyscallSucceedsWithValue(0)); - ASSERT_THAT(read(fd.get(), &buf, 1), SyscallSucceedsWithValue(1)); - EXPECT_EQ(buf, kFileData.c_str()[0]); - EXPECT_THAT(lseek(fd.get(), -2, SEEK_END), SyscallSucceedsWithValue(10)); - ASSERT_THAT(read(fd.get(), &buf, 1), SyscallSucceedsWithValue(1)); - EXPECT_EQ(buf, kFileData.c_str()[kFileData.length() - 2]); -} - -TEST(LseekTest, InvalidFD) { - EXPECT_THAT(lseek(-1, 0, SEEK_SET), SyscallFailsWithErrno(EBADF)); -} - -TEST(LseekTest, DirCurEnd) { - const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open("/tmp", O_RDONLY)); - ASSERT_THAT(lseek(fd.get(), 0, SEEK_CUR), SyscallSucceedsWithValue(0)); -} - -TEST(LseekTest, ProcDir) { - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open("/proc/self", O_RDONLY)); - ASSERT_THAT(lseek(fd.get(), 0, SEEK_CUR), SyscallSucceeds()); - ASSERT_THAT(lseek(fd.get(), 0, SEEK_END), SyscallSucceeds()); -} - -TEST(LseekTest, ProcFile) { - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open("/proc/meminfo", O_RDONLY)); - ASSERT_THAT(lseek(fd.get(), 0, SEEK_CUR), SyscallSucceeds()); - ASSERT_THAT(lseek(fd.get(), 0, SEEK_END), SyscallFailsWithErrno(EINVAL)); -} - -TEST(LseekTest, SysDir) { - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open("/sys/devices", O_RDONLY)); - ASSERT_THAT(lseek(fd.get(), 0, SEEK_CUR), SyscallSucceeds()); - ASSERT_THAT(lseek(fd.get(), 0, SEEK_END), SyscallSucceeds()); -} - -TEST(LseekTest, SeekCurrentDir) { - // From include/linux/fs.h. - constexpr loff_t MAX_LFS_FILESIZE = 0x7fffffffffffffff; - - char* dir = get_current_dir_name(); - const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(dir, O_RDONLY)); - - ASSERT_THAT(lseek(fd.get(), 0, SEEK_CUR), SyscallSucceeds()); - ASSERT_THAT(lseek(fd.get(), 0, SEEK_END), - // Some filesystems (like ext4) allow lseek(SEEK_END) on a - // directory and return MAX_LFS_FILESIZE, others return EINVAL. - AnyOf(SyscallSucceedsWithValue(MAX_LFS_FILESIZE), - SyscallFailsWithErrno(EINVAL))); - free(dir); -} - -TEST(LseekTest, ProcStatTwice) { - const FileDescriptor fd1 = - ASSERT_NO_ERRNO_AND_VALUE(Open("/proc/stat", O_RDONLY)); - const FileDescriptor fd2 = - ASSERT_NO_ERRNO_AND_VALUE(Open("/proc/stat", O_RDONLY)); - - ASSERT_THAT(lseek(fd1.get(), 0, SEEK_CUR), SyscallSucceedsWithValue(0)); - ASSERT_THAT(lseek(fd1.get(), 0, SEEK_END), SyscallFailsWithErrno(EINVAL)); - ASSERT_THAT(lseek(fd1.get(), 1000, SEEK_CUR), SyscallSucceeds()); - // Check that just because we moved fd1, fd2 doesn't move. - ASSERT_THAT(lseek(fd2.get(), 0, SEEK_CUR), SyscallSucceedsWithValue(0)); - - const FileDescriptor fd3 = - ASSERT_NO_ERRNO_AND_VALUE(Open("/proc/stat", O_RDONLY)); - ASSERT_THAT(lseek(fd3.get(), 0, SEEK_CUR), SyscallSucceedsWithValue(0)); -} - -TEST(LseekTest, EtcPasswdDup) { - const FileDescriptor fd1 = - ASSERT_NO_ERRNO_AND_VALUE(Open("/etc/passwd", O_RDONLY)); - const FileDescriptor fd2 = ASSERT_NO_ERRNO_AND_VALUE(fd1.Dup()); - - ASSERT_THAT(lseek(fd1.get(), 0, SEEK_CUR), SyscallSucceedsWithValue(0)); - ASSERT_THAT(lseek(fd2.get(), 0, SEEK_CUR), SyscallSucceedsWithValue(0)); - ASSERT_THAT(lseek(fd1.get(), 1000, SEEK_CUR), SyscallSucceeds()); - // Check that just because we moved fd1, fd2 doesn't move. - ASSERT_THAT(lseek(fd2.get(), 0, SEEK_CUR), SyscallSucceedsWithValue(1000)); - - const FileDescriptor fd3 = ASSERT_NO_ERRNO_AND_VALUE(fd1.Dup()); - ASSERT_THAT(lseek(fd3.get(), 0, SEEK_CUR), SyscallSucceedsWithValue(1000)); -} - -// TODO(magi): Add tests where we have donated in sockets. - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/madvise.cc b/test/syscalls/linux/madvise.cc deleted file mode 100644 index 5a1973f60..000000000 --- a/test/syscalls/linux/madvise.cc +++ /dev/null @@ -1,251 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <fcntl.h> -#include <stdlib.h> -#include <string.h> -#include <sys/mman.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <sys/wait.h> -#include <unistd.h> - -#include <string> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "test/util/file_descriptor.h" -#include "test/util/logging.h" -#include "test/util/memory_util.h" -#include "test/util/multiprocess_util.h" -#include "test/util/posix_error.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -void ExpectAllMappingBytes(Mapping const& m, char c) { - auto const v = m.view(); - for (size_t i = 0; i < kPageSize; i++) { - ASSERT_EQ(v[i], c) << "at offset " << i; - } -} - -// Equivalent to ExpectAllMappingBytes but async-signal-safe and with less -// helpful failure messages. -void CheckAllMappingBytes(Mapping const& m, char c) { - auto const v = m.view(); - for (size_t i = 0; i < kPageSize; i++) { - TEST_CHECK_MSG(v[i] == c, "mapping contains wrong value"); - } -} - -TEST(MadviseDontneedTest, ZerosPrivateAnonPage) { - auto m = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE)); - ExpectAllMappingBytes(m, 0); - memset(m.ptr(), 1, m.len()); - ExpectAllMappingBytes(m, 1); - ASSERT_THAT(madvise(m.ptr(), m.len(), MADV_DONTNEED), SyscallSucceeds()); - ExpectAllMappingBytes(m, 0); -} - -TEST(MadviseDontneedTest, ZerosCOWAnonPageInCallerOnly) { - auto m = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE)); - ExpectAllMappingBytes(m, 0); - memset(m.ptr(), 2, m.len()); - ExpectAllMappingBytes(m, 2); - - // Do madvise in a child process. - pid_t pid = fork(); - CheckAllMappingBytes(m, 2); - if (pid == 0) { - TEST_PCHECK(madvise(m.ptr(), m.len(), MADV_DONTNEED) == 0); - CheckAllMappingBytes(m, 0); - _exit(0); - } - - ASSERT_THAT(pid, SyscallSucceeds()); - - int status = 0; - ASSERT_THAT(waitpid(-1, &status, 0), SyscallSucceedsWithValue(pid)); - EXPECT_TRUE(WIFEXITED(status)); - EXPECT_EQ(WEXITSTATUS(status), 0); - // The child's madvise should not have affected the parent. - ExpectAllMappingBytes(m, 2); -} - -TEST(MadviseDontneedTest, DoesNotModifySharedAnonPage) { - auto m = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(kPageSize, PROT_READ | PROT_WRITE, MAP_SHARED)); - ExpectAllMappingBytes(m, 0); - memset(m.ptr(), 3, m.len()); - ExpectAllMappingBytes(m, 3); - ASSERT_THAT(madvise(m.ptr(), m.len(), MADV_DONTNEED), SyscallSucceeds()); - ExpectAllMappingBytes(m, 3); -} - -TEST(MadviseDontneedTest, CleansPrivateFilePage) { - TempPath f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - /* parent = */ GetAbsoluteTestTmpdir(), - /* content = */ std::string(kPageSize, 4), TempPath::kDefaultFileMode)); - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(f.path(), O_RDWR)); - - Mapping m = ASSERT_NO_ERRNO_AND_VALUE(Mmap( - nullptr, kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd.get(), 0)); - ExpectAllMappingBytes(m, 4); - memset(m.ptr(), 5, m.len()); - ExpectAllMappingBytes(m, 5); - ASSERT_THAT(madvise(m.ptr(), m.len(), MADV_DONTNEED), SyscallSucceeds()); - ExpectAllMappingBytes(m, 4); -} - -TEST(MadviseDontneedTest, DoesNotModifySharedFilePage) { - TempPath f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - /* parent = */ GetAbsoluteTestTmpdir(), - /* content = */ std::string(kPageSize, 6), TempPath::kDefaultFileMode)); - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(f.path(), O_RDWR)); - - Mapping m = ASSERT_NO_ERRNO_AND_VALUE(Mmap( - nullptr, kPageSize, PROT_READ | PROT_WRITE, MAP_SHARED, fd.get(), 0)); - ExpectAllMappingBytes(m, 6); - memset(m.ptr(), 7, m.len()); - ExpectAllMappingBytes(m, 7); - ASSERT_THAT(madvise(m.ptr(), m.len(), MADV_DONTNEED), SyscallSucceeds()); - ExpectAllMappingBytes(m, 7); -} - -TEST(MadviseDontneedTest, IgnoresPermissions) { - auto m = - ASSERT_NO_ERRNO_AND_VALUE(MmapAnon(kPageSize, PROT_NONE, MAP_PRIVATE)); - EXPECT_THAT(madvise(m.ptr(), m.len(), MADV_DONTNEED), SyscallSucceeds()); -} - -TEST(MadviseDontforkTest, AddressLength) { - auto m = - ASSERT_NO_ERRNO_AND_VALUE(MmapAnon(kPageSize, PROT_NONE, MAP_PRIVATE)); - char* addr = static_cast<char*>(m.ptr()); - - // Address must be page aligned. - EXPECT_THAT(madvise(addr + 1, kPageSize, MADV_DONTFORK), - SyscallFailsWithErrno(EINVAL)); - - // Zero length madvise always succeeds. - EXPECT_THAT(madvise(addr, 0, MADV_DONTFORK), SyscallSucceeds()); - - // Length must not roll over after rounding up. - size_t badlen = std::numeric_limits<std::size_t>::max() - (kPageSize / 2); - EXPECT_THAT(madvise(0, badlen, MADV_DONTFORK), SyscallFailsWithErrno(EINVAL)); - - // Length need not be page aligned - it is implicitly rounded up. - EXPECT_THAT(madvise(addr, 1, MADV_DONTFORK), SyscallSucceeds()); - EXPECT_THAT(madvise(addr, kPageSize, MADV_DONTFORK), SyscallSucceeds()); -} - -TEST(MadviseDontforkTest, DontforkShared) { - // Mmap two shared file-backed pages and MADV_DONTFORK the second page. - TempPath f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - /* parent = */ GetAbsoluteTestTmpdir(), - /* content = */ std::string(kPageSize * 2, 2), - TempPath::kDefaultFileMode)); - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(f.path(), O_RDWR)); - - Mapping m = ASSERT_NO_ERRNO_AND_VALUE(Mmap( - nullptr, kPageSize * 2, PROT_READ | PROT_WRITE, MAP_SHARED, fd.get(), 0)); - - const Mapping ms1 = Mapping(reinterpret_cast<void*>(m.addr()), kPageSize); - const Mapping ms2 = - Mapping(reinterpret_cast<void*>(m.addr() + kPageSize), kPageSize); - m.release(); - - ASSERT_THAT(madvise(ms2.ptr(), kPageSize, MADV_DONTFORK), SyscallSucceeds()); - - const auto rest = [&] { - // First page is mapped in child and modifications are visible to parent - // via the shared mapping. - TEST_CHECK(IsMapped(ms1.addr())); - ExpectAllMappingBytes(ms1, 2); - memset(ms1.ptr(), 1, kPageSize); - ExpectAllMappingBytes(ms1, 1); - - // Second page must not be mapped in child. - TEST_CHECK(!IsMapped(ms2.addr())); - }; - - EXPECT_THAT(InForkedProcess(rest), IsPosixErrorOkAndHolds(0)); - - ExpectAllMappingBytes(ms1, 1); // page contents modified by child. - ExpectAllMappingBytes(ms2, 2); // page contents unchanged. -} - -TEST(MadviseDontforkTest, DontforkAnonPrivate) { - // Mmap three anonymous pages and MADV_DONTFORK the middle page. - Mapping m = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(kPageSize * 3, PROT_READ | PROT_WRITE, MAP_PRIVATE)); - const Mapping mp1 = Mapping(reinterpret_cast<void*>(m.addr()), kPageSize); - const Mapping mp2 = - Mapping(reinterpret_cast<void*>(m.addr() + kPageSize), kPageSize); - const Mapping mp3 = - Mapping(reinterpret_cast<void*>(m.addr() + 2 * kPageSize), kPageSize); - m.release(); - - ASSERT_THAT(madvise(mp2.ptr(), kPageSize, MADV_DONTFORK), SyscallSucceeds()); - - // Verify that all pages are zeroed and memset the first, second and third - // pages to 1, 2, and 3 respectively. - ExpectAllMappingBytes(mp1, 0); - memset(mp1.ptr(), 1, kPageSize); - - ExpectAllMappingBytes(mp2, 0); - memset(mp2.ptr(), 2, kPageSize); - - ExpectAllMappingBytes(mp3, 0); - memset(mp3.ptr(), 3, kPageSize); - - const auto rest = [&] { - // Verify first page is mapped, verify its contents and then modify the - // page. The mapping is private so the modifications are not visible to - // the parent. - TEST_CHECK(IsMapped(mp1.addr())); - ExpectAllMappingBytes(mp1, 1); - memset(mp1.ptr(), 11, kPageSize); - ExpectAllMappingBytes(mp1, 11); - - // Verify second page is not mapped. - TEST_CHECK(!IsMapped(mp2.addr())); - - // Verify third page is mapped, verify its contents and then modify the - // page. The mapping is private so the modifications are not visible to - // the parent. - TEST_CHECK(IsMapped(mp3.addr())); - ExpectAllMappingBytes(mp3, 3); - memset(mp3.ptr(), 13, kPageSize); - ExpectAllMappingBytes(mp3, 13); - }; - EXPECT_THAT(InForkedProcess(rest), IsPosixErrorOkAndHolds(0)); - - // The fork and COW by child should not affect the parent mappings. - ExpectAllMappingBytes(mp1, 1); - ExpectAllMappingBytes(mp2, 2); - ExpectAllMappingBytes(mp3, 3); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/memfd.cc b/test/syscalls/linux/memfd.cc deleted file mode 100644 index e57b49a4a..000000000 --- a/test/syscalls/linux/memfd.cc +++ /dev/null @@ -1,556 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <fcntl.h> -#include <linux/magic.h> -#include <linux/memfd.h> -#include <string.h> -#include <sys/mman.h> -#include <sys/statfs.h> -#include <sys/syscall.h> - -#include <vector> - -#include "gtest/gtest.h" -#include "test/util/file_descriptor.h" -#include "test/util/fs_util.h" -#include "test/util/memory_util.h" -#include "test/util/multiprocess_util.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -// The header sys/memfd.h isn't available on all systems, so redefining some of -// the constants here. -#define F_LINUX_SPECIFIC_BASE 1024 - -#ifndef F_ADD_SEALS -#define F_ADD_SEALS (F_LINUX_SPECIFIC_BASE + 9) -#endif /* F_ADD_SEALS */ - -#ifndef F_GET_SEALS -#define F_GET_SEALS (F_LINUX_SPECIFIC_BASE + 10) -#endif /* F_GET_SEALS */ - -#define F_SEAL_SEAL 0x0001 -#define F_SEAL_SHRINK 0x0002 -#define F_SEAL_GROW 0x0004 -#define F_SEAL_WRITE 0x0008 - -using ::testing::StartsWith; - -const std::string kMemfdName = "some-memfd"; - -int memfd_create(const std::string& name, unsigned int flags) { - return syscall(__NR_memfd_create, name.c_str(), flags); -} - -PosixErrorOr<FileDescriptor> MemfdCreate(const std::string& name, - uint32_t flags) { - int fd = memfd_create(name, flags); - if (fd < 0) { - return PosixError( - errno, absl::StrFormat("memfd_create(\"%s\", %#x)", name, flags)); - } - MaybeSave(); - return FileDescriptor(fd); -} - -// Procfs entries for memfds display the appropriate name. -TEST(MemfdTest, Name) { - const FileDescriptor memfd = - ASSERT_NO_ERRNO_AND_VALUE(MemfdCreate(kMemfdName, 0)); - const std::string proc_name = ASSERT_NO_ERRNO_AND_VALUE( - ReadLink(absl::StrFormat("/proc/self/fd/%d", memfd.get()))); - EXPECT_THAT(proc_name, StartsWith("/memfd:" + kMemfdName)); -} - -// Memfds support read/write syscalls. -TEST(MemfdTest, WriteRead) { - const FileDescriptor memfd = - ASSERT_NO_ERRNO_AND_VALUE(MemfdCreate(kMemfdName, 0)); - - // Write a random page of data to the memfd via write(2). - std::vector<char> buf(kPageSize); - RandomizeBuffer(buf.data(), buf.size()); - ASSERT_THAT(write(memfd.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(kPageSize)); - - // Read back the same data and verify. - std::vector<char> buf2(kPageSize); - ASSERT_THAT(lseek(memfd.get(), 0, SEEK_SET), SyscallSucceeds()); - EXPECT_THAT(read(memfd.get(), buf2.data(), buf2.size()), - SyscallSucceedsWithValue(kPageSize)); - EXPECT_EQ(buf, buf2); -} - -// Memfds can be mapped and used as usual. -TEST(MemfdTest, Mmap) { - const FileDescriptor memfd = - ASSERT_NO_ERRNO_AND_VALUE(MemfdCreate(kMemfdName, 0)); - const Mapping m1 = ASSERT_NO_ERRNO_AND_VALUE(Mmap( - nullptr, kPageSize, PROT_READ | PROT_WRITE, MAP_SHARED, memfd.get(), 0)); - - // Write a random page of data to the memfd via mmap m1. - std::vector<char> buf(kPageSize); - RandomizeBuffer(buf.data(), buf.size()); - ASSERT_THAT(ftruncate(memfd.get(), kPageSize), SyscallSucceeds()); - memcpy(m1.ptr(), buf.data(), buf.size()); - - // Read the data back via a read syscall on the memfd. - std::vector<char> buf2(kPageSize); - EXPECT_THAT(read(memfd.get(), buf2.data(), buf2.size()), - SyscallSucceedsWithValue(kPageSize)); - EXPECT_EQ(buf, buf2); - - // The same data should be accessible via a new mapping m2. - const Mapping m2 = ASSERT_NO_ERRNO_AND_VALUE(Mmap( - nullptr, kPageSize, PROT_READ | PROT_WRITE, MAP_SHARED, memfd.get(), 0)); - EXPECT_EQ(0, memcmp(m1.ptr(), m2.ptr(), kPageSize)); -} - -TEST(MemfdTest, DuplicateFDsShareContent) { - const FileDescriptor memfd = - ASSERT_NO_ERRNO_AND_VALUE(MemfdCreate(kMemfdName, 0)); - const Mapping m1 = ASSERT_NO_ERRNO_AND_VALUE(Mmap( - nullptr, kPageSize, PROT_READ | PROT_WRITE, MAP_SHARED, memfd.get(), 0)); - const FileDescriptor memfd2 = ASSERT_NO_ERRNO_AND_VALUE(memfd.Dup()); - - // Write a random page of data to the memfd via mmap m1. - std::vector<char> buf(kPageSize); - RandomizeBuffer(buf.data(), buf.size()); - ASSERT_THAT(ftruncate(memfd.get(), kPageSize), SyscallSucceeds()); - memcpy(m1.ptr(), buf.data(), buf.size()); - - // Read the data back via a read syscall on a duplicate fd. - std::vector<char> buf2(kPageSize); - EXPECT_THAT(read(memfd2.get(), buf2.data(), buf2.size()), - SyscallSucceedsWithValue(kPageSize)); - EXPECT_EQ(buf, buf2); -} - -// File seals are disabled by default on memfds. -TEST(MemfdTest, SealingDisabledByDefault) { - const FileDescriptor memfd = - ASSERT_NO_ERRNO_AND_VALUE(MemfdCreate(kMemfdName, 0)); - EXPECT_THAT(fcntl(memfd.get(), F_GET_SEALS), - SyscallSucceedsWithValue(F_SEAL_SEAL)); - // Attempting to set any seal should fail. - EXPECT_THAT(fcntl(memfd.get(), F_ADD_SEALS, F_SEAL_WRITE), - SyscallFailsWithErrno(EPERM)); -} - -// Seals can be retrieved and updated for memfds. -TEST(MemfdTest, SealsGetSet) { - const FileDescriptor memfd = - ASSERT_NO_ERRNO_AND_VALUE(MemfdCreate(kMemfdName, MFD_ALLOW_SEALING)); - int seals; - ASSERT_THAT(seals = fcntl(memfd.get(), F_GET_SEALS), SyscallSucceeds()); - // No seals are set yet. - EXPECT_EQ(0, seals); - - // Set a seal and check that we can get it back. - ASSERT_THAT(fcntl(memfd.get(), F_ADD_SEALS, F_SEAL_WRITE), SyscallSucceeds()); - EXPECT_THAT(fcntl(memfd.get(), F_GET_SEALS), - SyscallSucceedsWithValue(F_SEAL_WRITE)); - - // Set some more seals and verify. - ASSERT_THAT(fcntl(memfd.get(), F_ADD_SEALS, F_SEAL_GROW | F_SEAL_SHRINK), - SyscallSucceeds()); - EXPECT_THAT( - fcntl(memfd.get(), F_GET_SEALS), - SyscallSucceedsWithValue(F_SEAL_WRITE | F_SEAL_GROW | F_SEAL_SHRINK)); - - // Attempting to set a seal that is already set is a no-op. - ASSERT_THAT(fcntl(memfd.get(), F_ADD_SEALS, F_SEAL_WRITE), SyscallSucceeds()); - EXPECT_THAT( - fcntl(memfd.get(), F_GET_SEALS), - SyscallSucceedsWithValue(F_SEAL_WRITE | F_SEAL_GROW | F_SEAL_SHRINK)); - - // Add remaining seals and verify. - ASSERT_THAT(fcntl(memfd.get(), F_ADD_SEALS, F_SEAL_SEAL), SyscallSucceeds()); - EXPECT_THAT(fcntl(memfd.get(), F_GET_SEALS), - SyscallSucceedsWithValue(F_SEAL_WRITE | F_SEAL_GROW | - F_SEAL_SHRINK | F_SEAL_SEAL)); -} - -// F_SEAL_GROW prevents a memfd from being grown using ftruncate. -TEST(MemfdTest, SealGrowWithTruncate) { - const FileDescriptor memfd = - ASSERT_NO_ERRNO_AND_VALUE(MemfdCreate(kMemfdName, MFD_ALLOW_SEALING)); - ASSERT_THAT(ftruncate(memfd.get(), kPageSize), SyscallSucceeds()); - ASSERT_THAT(fcntl(memfd.get(), F_ADD_SEALS, F_SEAL_GROW), SyscallSucceeds()); - - // Try grow the memfd by 1 page. - ASSERT_THAT(ftruncate(memfd.get(), kPageSize * 2), - SyscallFailsWithErrno(EPERM)); - - // Ftruncate calls that don't actually grow the memfd are allowed. - ASSERT_THAT(ftruncate(memfd.get(), kPageSize), SyscallSucceeds()); - ASSERT_THAT(ftruncate(memfd.get(), kPageSize / 2), SyscallSucceeds()); - - // After shrinking, growing back is not allowed. - ASSERT_THAT(ftruncate(memfd.get(), kPageSize), SyscallFailsWithErrno(EPERM)); -} - -// F_SEAL_GROW prevents a memfd from being grown using the write syscall. -TEST(MemfdTest, SealGrowWithWrite) { - const FileDescriptor memfd = - ASSERT_NO_ERRNO_AND_VALUE(MemfdCreate(kMemfdName, MFD_ALLOW_SEALING)); - - // Initially, writing to the memfd succeeds. - const std::vector<char> buf(kPageSize); - EXPECT_THAT(write(memfd.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(kPageSize)); - - // Apply F_SEAL_GROW, subsequent writes which extend the memfd should fail. - ASSERT_THAT(fcntl(memfd.get(), F_ADD_SEALS, F_SEAL_GROW), SyscallSucceeds()); - EXPECT_THAT(write(memfd.get(), buf.data(), buf.size()), - SyscallFailsWithErrno(EPERM)); - - // However, zero-length writes are ok since they don't grow the memfd. - EXPECT_THAT(write(memfd.get(), buf.data(), 0), SyscallSucceeds()); - - // Writing to existing parts of the memfd is also ok. - ASSERT_THAT(lseek(memfd.get(), 0, SEEK_SET), SyscallSucceeds()); - EXPECT_THAT(write(memfd.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(kPageSize)); - - // Returning the end of the file and writing still not allowed. - EXPECT_THAT(write(memfd.get(), buf.data(), buf.size()), - SyscallFailsWithErrno(EPERM)); -} - -// F_SEAL_GROW causes writes which partially extend off the current EOF to -// partially succeed, up to the page containing the EOF. -TEST(MemfdTest, SealGrowPartialWriteTruncated) { - const FileDescriptor memfd = - ASSERT_NO_ERRNO_AND_VALUE(MemfdCreate(kMemfdName, MFD_ALLOW_SEALING)); - ASSERT_THAT(ftruncate(memfd.get(), kPageSize), SyscallSucceeds()); - ASSERT_THAT(fcntl(memfd.get(), F_ADD_SEALS, F_SEAL_GROW), SyscallSucceeds()); - - // FD offset: 1 page, EOF: 1 page. - - ASSERT_THAT(lseek(memfd.get(), kPageSize * 3 / 4, SEEK_SET), - SyscallSucceeds()); - - // FD offset: 3/4 page. Writing a full page now should only write 1/4 page - // worth of data. This partially succeeds because the first page is entirely - // within the file and requires no growth, but attempting to write the final - // 3/4 page would require growing the file. - const std::vector<char> buf(kPageSize); - EXPECT_THAT(write(memfd.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(kPageSize / 4)); -} - -// F_SEAL_GROW causes writes which partially extend off the current EOF to fail -// in its entirety if the only data written would be to the page containing the -// EOF. -TEST(MemfdTest, SealGrowPartialWriteTruncatedSamePage) { - const FileDescriptor memfd = - ASSERT_NO_ERRNO_AND_VALUE(MemfdCreate(kMemfdName, MFD_ALLOW_SEALING)); - ASSERT_THAT(ftruncate(memfd.get(), kPageSize * 3 / 4), SyscallSucceeds()); - ASSERT_THAT(fcntl(memfd.get(), F_ADD_SEALS, F_SEAL_GROW), SyscallSucceeds()); - - // EOF: 3/4 page, writing 1/2 page starting at 1/2 page would cause the file - // to grow. Since this would require only the page containing the EOF to be - // modified, the write is rejected entirely. - const std::vector<char> buf(kPageSize / 2); - EXPECT_THAT(pwrite(memfd.get(), buf.data(), buf.size(), kPageSize / 2), - SyscallFailsWithErrno(EPERM)); - - // However, writing up to EOF is fine. - EXPECT_THAT(pwrite(memfd.get(), buf.data(), buf.size() / 2, kPageSize / 2), - SyscallSucceedsWithValue(kPageSize / 4)); -} - -// F_SEAL_SHRINK prevents a memfd from being shrunk using ftruncate. -TEST(MemfdTest, SealShrink) { - const FileDescriptor memfd = - ASSERT_NO_ERRNO_AND_VALUE(MemfdCreate(kMemfdName, MFD_ALLOW_SEALING)); - ASSERT_THAT(ftruncate(memfd.get(), kPageSize), SyscallSucceeds()); - ASSERT_THAT(fcntl(memfd.get(), F_ADD_SEALS, F_SEAL_SHRINK), - SyscallSucceeds()); - - // Shrink by half a page. - ASSERT_THAT(ftruncate(memfd.get(), kPageSize / 2), - SyscallFailsWithErrno(EPERM)); - - // Ftruncate calls that don't actually shrink the file are allowed. - ASSERT_THAT(ftruncate(memfd.get(), kPageSize), SyscallSucceeds()); - ASSERT_THAT(ftruncate(memfd.get(), kPageSize * 2), SyscallSucceeds()); - - // After growing, shrinking is still not allowed. - ASSERT_THAT(ftruncate(memfd.get(), kPageSize), SyscallFailsWithErrno(EPERM)); -} - -// F_SEAL_WRITE prevents a memfd from being written to through a write -// syscall. -TEST(MemfdTest, SealWriteWithWrite) { - const FileDescriptor memfd = - ASSERT_NO_ERRNO_AND_VALUE(MemfdCreate(kMemfdName, MFD_ALLOW_SEALING)); - const std::vector<char> buf(kPageSize); - ASSERT_THAT(write(memfd.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(kPageSize)); - ASSERT_THAT(fcntl(memfd.get(), F_ADD_SEALS, F_SEAL_WRITE), SyscallSucceeds()); - - // Attemping to write at the end of the file fails. - EXPECT_THAT(write(memfd.get(), buf.data(), 1), SyscallFailsWithErrno(EPERM)); - - // Attemping to overwrite an existing part of the memfd fails. - EXPECT_THAT(pwrite(memfd.get(), buf.data(), 1, 0), - SyscallFailsWithErrno(EPERM)); - EXPECT_THAT(pwrite(memfd.get(), buf.data(), buf.size() / 2, kPageSize / 2), - SyscallFailsWithErrno(EPERM)); - EXPECT_THAT(pwrite(memfd.get(), buf.data(), buf.size(), kPageSize / 2), - SyscallFailsWithErrno(EPERM)); - - // Zero-length writes however do not fail. - EXPECT_THAT(write(memfd.get(), buf.data(), 0), SyscallSucceeds()); -} - -// F_SEAL_WRITE prevents a memfd from being written to through an mmap. -TEST(MemfdTest, SealWriteWithMmap) { - const FileDescriptor memfd = - ASSERT_NO_ERRNO_AND_VALUE(MemfdCreate(kMemfdName, MFD_ALLOW_SEALING)); - const std::vector<char> buf(kPageSize); - ASSERT_THAT(write(memfd.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(kPageSize)); - ASSERT_THAT(fcntl(memfd.get(), F_ADD_SEALS, F_SEAL_WRITE), SyscallSucceeds()); - - // Can't create a shared mapping with writes sealed. - void* ret = mmap(nullptr, kPageSize, PROT_WRITE, MAP_SHARED, memfd.get(), 0); - EXPECT_EQ(ret, MAP_FAILED); - EXPECT_EQ(errno, EPERM); - ret = mmap(nullptr, kPageSize, PROT_READ, MAP_SHARED, memfd.get(), 0); - EXPECT_EQ(ret, MAP_FAILED); - EXPECT_EQ(errno, EPERM); - - // However, private mappings are ok. - EXPECT_NO_ERRNO(Mmap(nullptr, kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE, - memfd.get(), 0)); -} - -// Adding F_SEAL_WRITE fails when there are outstanding writable mappings to a -// memfd. -TEST(MemfdTest, SealWriteWithOutstandingWritbleMapping) { - const FileDescriptor memfd = - ASSERT_NO_ERRNO_AND_VALUE(MemfdCreate(kMemfdName, MFD_ALLOW_SEALING)); - const std::vector<char> buf(kPageSize); - ASSERT_THAT(write(memfd.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(kPageSize)); - - // Attempting to add F_SEAL_WRITE with active shared mapping with any set of - // permissions fails. - - // Read-only shared mapping. - { - const Mapping m = ASSERT_NO_ERRNO_AND_VALUE( - Mmap(nullptr, kPageSize, PROT_READ, MAP_SHARED, memfd.get(), 0)); - EXPECT_THAT(fcntl(memfd.get(), F_ADD_SEALS, F_SEAL_WRITE), - SyscallFailsWithErrno(EBUSY)); - } - - // Write-only shared mapping. - { - const Mapping m = ASSERT_NO_ERRNO_AND_VALUE( - Mmap(nullptr, kPageSize, PROT_WRITE, MAP_SHARED, memfd.get(), 0)); - EXPECT_THAT(fcntl(memfd.get(), F_ADD_SEALS, F_SEAL_WRITE), - SyscallFailsWithErrno(EBUSY)); - } - - // Read-write shared mapping. - { - const Mapping m = ASSERT_NO_ERRNO_AND_VALUE( - Mmap(nullptr, kPageSize, PROT_READ | PROT_WRITE, MAP_SHARED, - memfd.get(), 0)); - EXPECT_THAT(fcntl(memfd.get(), F_ADD_SEALS, F_SEAL_WRITE), - SyscallFailsWithErrno(EBUSY)); - } - - // F_SEAL_WRITE can be set with private mappings with any permissions. - { - const Mapping m = ASSERT_NO_ERRNO_AND_VALUE( - Mmap(nullptr, kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE, - memfd.get(), 0)); - EXPECT_THAT(fcntl(memfd.get(), F_ADD_SEALS, F_SEAL_WRITE), - SyscallSucceeds()); - } -} - -// When applying F_SEAL_WRITE fails due to outstanding writable mappings, any -// additional seals passed to the same add seal call are also rejected. -TEST(MemfdTest, NoPartialSealApplicationWhenWriteSealRejected) { - const FileDescriptor memfd = - ASSERT_NO_ERRNO_AND_VALUE(MemfdCreate(kMemfdName, MFD_ALLOW_SEALING)); - const Mapping m = ASSERT_NO_ERRNO_AND_VALUE(Mmap( - nullptr, kPageSize, PROT_READ | PROT_WRITE, MAP_SHARED, memfd.get(), 0)); - - // Try add some seals along with F_SEAL_WRITE. The seal application should - // fail since there exists an active shared mapping. - EXPECT_THAT(fcntl(memfd.get(), F_ADD_SEALS, F_SEAL_WRITE | F_SEAL_GROW), - SyscallFailsWithErrno(EBUSY)); - - // None of the seals should be applied. - EXPECT_THAT(fcntl(memfd.get(), F_GET_SEALS), SyscallSucceedsWithValue(0)); -} - -// Seals are inode level properties, and apply to all file descriptors referring -// to a memfd. -TEST(MemfdTest, SealsAreInodeLevelProperties) { - const FileDescriptor memfd = - ASSERT_NO_ERRNO_AND_VALUE(MemfdCreate(kMemfdName, MFD_ALLOW_SEALING)); - const FileDescriptor memfd2 = ASSERT_NO_ERRNO_AND_VALUE(memfd.Dup()); - - // Add seal through the original memfd, and verify that it appears on the - // dupped fd. - ASSERT_THAT(fcntl(memfd.get(), F_ADD_SEALS, F_SEAL_WRITE), SyscallSucceeds()); - EXPECT_THAT(fcntl(memfd2.get(), F_GET_SEALS), - SyscallSucceedsWithValue(F_SEAL_WRITE)); - - // Verify the seal actually applies to both fds. - std::vector<char> buf(kPageSize); - EXPECT_THAT(write(memfd.get(), buf.data(), buf.size()), - SyscallFailsWithErrno(EPERM)); - EXPECT_THAT(write(memfd2.get(), buf.data(), buf.size()), - SyscallFailsWithErrno(EPERM)); - - // Seals are enforced on new FDs that are dupped after the seal is already - // applied. - const FileDescriptor memfd3 = ASSERT_NO_ERRNO_AND_VALUE(memfd2.Dup()); - EXPECT_THAT(write(memfd3.get(), buf.data(), buf.size()), - SyscallFailsWithErrno(EPERM)); - - // Try a new seal applied to one of the dupped fds. - ASSERT_THAT(fcntl(memfd3.get(), F_ADD_SEALS, F_SEAL_GROW), SyscallSucceeds()); - EXPECT_THAT(ftruncate(memfd.get(), kPageSize), SyscallFailsWithErrno(EPERM)); - EXPECT_THAT(ftruncate(memfd2.get(), kPageSize), SyscallFailsWithErrno(EPERM)); - EXPECT_THAT(ftruncate(memfd3.get(), kPageSize), SyscallFailsWithErrno(EPERM)); -} - -PosixErrorOr<bool> IsTmpfs(const std::string& path) { - struct statfs stat; - if (statfs(path.c_str(), &stat)) { - if (errno == ENOENT) { - // Nothing at path, don't raise this as an error. Instead, just report no - // tmpfs at path. - return false; - } - return PosixError(errno, - absl::StrFormat("statfs(\"%s\", %#p)", path, &stat)); - } - return stat.f_type == TMPFS_MAGIC; -} - -// Tmpfs files also support seals, but are created with F_SEAL_SEAL. -TEST(MemfdTest, TmpfsFilesHaveSealSeal) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(IsTmpfs("/tmp"))); - const TempPath tmpfs_file = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn("/tmp")); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(tmpfs_file.path(), O_RDWR, 0644)); - EXPECT_THAT(fcntl(fd.get(), F_GET_SEALS), - SyscallSucceedsWithValue(F_SEAL_SEAL)); -} - -// Can open a memfd from procfs and use as normal. -TEST(MemfdTest, CanOpenFromProcfs) { - const FileDescriptor memfd = - ASSERT_NO_ERRNO_AND_VALUE(MemfdCreate(kMemfdName, MFD_ALLOW_SEALING)); - - // Write a random page of data to the memfd via write(2). - std::vector<char> buf(kPageSize); - RandomizeBuffer(buf.data(), buf.size()); - ASSERT_THAT(write(memfd.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(kPageSize)); - - // Read back the same data from the fd obtained from procfs and verify. - const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE( - Open(absl::StrFormat("/proc/self/fd/%d", memfd.get()), O_RDWR)); - std::vector<char> buf2(kPageSize); - EXPECT_THAT(pread(fd.get(), buf2.data(), buf2.size(), 0), - SyscallSucceedsWithValue(kPageSize)); - EXPECT_EQ(buf, buf2); -} - -// Test that memfd permissions are set up correctly to allow another process to -// open it from procfs. -TEST(MemfdTest, OtherProcessCanOpenFromProcfs) { - const FileDescriptor memfd = - ASSERT_NO_ERRNO_AND_VALUE(MemfdCreate(kMemfdName, MFD_ALLOW_SEALING)); - const auto memfd_path = - absl::StrFormat("/proc/%d/fd/%d", getpid(), memfd.get()); - const auto rest = [&] { - int fd = open(memfd_path.c_str(), O_RDWR); - TEST_PCHECK(fd >= 0); - TEST_PCHECK(close(fd) >= 0); - }; - EXPECT_THAT(InForkedProcess(rest), IsPosixErrorOkAndHolds(0)); -} - -// Test that only files opened as writable can have seals applied to them. -// Normally there's no way to specify file permissions on memfds, but we can -// obtain a read-only memfd by opening the corresponding procfs fd entry as -// read-only. -TEST(MemfdTest, MemfdMustBeWritableToModifySeals) { - const FileDescriptor memfd = - ASSERT_NO_ERRNO_AND_VALUE(MemfdCreate(kMemfdName, MFD_ALLOW_SEALING)); - - // Initially adding a seal works. - EXPECT_THAT(fcntl(memfd.get(), F_ADD_SEALS, F_SEAL_WRITE), SyscallSucceeds()); - - // Re-open the memfd as read-only from procfs. - const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE( - Open(absl::StrFormat("/proc/self/fd/%d", memfd.get()), O_RDONLY)); - - // Can't add seals through an unwritable fd. - EXPECT_THAT(fcntl(fd.get(), F_ADD_SEALS, F_SEAL_GROW), - SyscallFailsWithErrno(EPERM)); -} - -// Test that the memfd implementation internally tracks potentially writable -// maps correctly. -TEST(MemfdTest, MultipleWritableAndNonWritableRefsToSameFileRegion) { - const FileDescriptor memfd = - ASSERT_NO_ERRNO_AND_VALUE(MemfdCreate(kMemfdName, 0)); - - // Populate with a random page of data. - std::vector<char> buf(kPageSize); - RandomizeBuffer(buf.data(), buf.size()); - ASSERT_THAT(write(memfd.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(kPageSize)); - - // Read-only map to the page. This should cause an initial mapping to be - // created. - Mapping m1 = ASSERT_NO_ERRNO_AND_VALUE( - Mmap(nullptr, kPageSize, PROT_READ, MAP_PRIVATE, memfd.get(), 0)); - - // Create a shared writable map to the page. This should cause the internal - // mapping to become potentially writable. - Mapping m2 = ASSERT_NO_ERRNO_AND_VALUE(Mmap( - nullptr, kPageSize, PROT_READ | PROT_WRITE, MAP_SHARED, memfd.get(), 0)); - - // Drop the read-only mapping first. If writable-ness isn't tracked correctly, - // this can cause some misaccounting, which can trigger asserts internally. - m1.reset(); - m2.reset(); -} - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/memory_accounting.cc b/test/syscalls/linux/memory_accounting.cc deleted file mode 100644 index 94aea4077..000000000 --- a/test/syscalls/linux/memory_accounting.cc +++ /dev/null @@ -1,99 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <sys/mman.h> - -#include <map> - -#include "gtest/gtest.h" -#include "absl/strings/match.h" -#include "absl/strings/numbers.h" -#include "absl/strings/str_format.h" -#include "absl/strings/str_split.h" -#include "test/util/fs_util.h" -#include "test/util/posix_error.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -using ::absl::StrFormat; - -// AnonUsageFromMeminfo scrapes the current anonymous memory usage from -// /proc/meminfo and returns it in bytes. -PosixErrorOr<uint64_t> AnonUsageFromMeminfo() { - ASSIGN_OR_RETURN_ERRNO(auto meminfo, GetContents("/proc/meminfo")); - std::vector<std::string> lines(absl::StrSplit(meminfo, '\n')); - - // Try to find AnonPages line, the format is AnonPages:\\s+(\\d+) kB\n. - for (const auto& line : lines) { - if (!absl::StartsWith(line, "AnonPages:")) { - continue; - } - - std::vector<std::string> parts( - absl::StrSplit(line, ' ', absl::SkipEmpty())); - if (parts.size() == 3) { - // The size is the second field, let's try to parse it as a number. - ASSIGN_OR_RETURN_ERRNO(auto anon_kb, Atoi<uint64_t>(parts[1])); - return anon_kb * 1024; - } - - return PosixError(EINVAL, "AnonPages field in /proc/meminfo was malformed"); - } - - return PosixError(EINVAL, "AnonPages field not found in /proc/meminfo"); -} - -TEST(MemoryAccounting, AnonAccountingPreservedOnSaveRestore) { - // This test isn't meaningful on Linux. /proc/meminfo reports system-wide - // memory usage, which can change arbitrarily in Linux from other activity on - // the machine. In gvisor, this test is the only thing running on the - // "machine", so values in /proc/meminfo accurately reflect the memory used by - // the test. - SKIP_IF(!IsRunningOnGvisor()); - - uint64_t anon_initial = ASSERT_NO_ERRNO_AND_VALUE(AnonUsageFromMeminfo()); - - // Cause some anonymous memory usage. - uint64_t map_bytes = Megabytes(512); - char* mem = - static_cast<char*>(mmap(nullptr, map_bytes, PROT_READ | PROT_WRITE, - MAP_POPULATE | MAP_ANON | MAP_PRIVATE, -1, 0)); - ASSERT_NE(mem, MAP_FAILED) - << "Map failed, errno: " << errno << " (" << strerror(errno) << ")."; - - // Write something to each page to prevent them from being decommited on - // S/R. Zero pages are dropped on save. - for (uint64_t i = 0; i < map_bytes; i += kPageSize) { - mem[i] = 'a'; - } - - uint64_t anon_after_alloc = ASSERT_NO_ERRNO_AND_VALUE(AnonUsageFromMeminfo()); - EXPECT_THAT(anon_after_alloc, - EquivalentWithin(anon_initial + map_bytes, 0.03)); - - // We have many implicit S/R cycles from scraping /proc/meminfo throughout the - // test, but throw an explicit S/R in here as well. - MaybeSave(); - - // Usage should remain the same across S/R. - uint64_t anon_after_sr = ASSERT_NO_ERRNO_AND_VALUE(AnonUsageFromMeminfo()); - EXPECT_THAT(anon_after_sr, EquivalentWithin(anon_after_alloc, 0.03)); -} - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/mempolicy.cc b/test/syscalls/linux/mempolicy.cc deleted file mode 100644 index 059fad598..000000000 --- a/test/syscalls/linux/mempolicy.cc +++ /dev/null @@ -1,289 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <sys/syscall.h> - -#include "gtest/gtest.h" -#include "absl/memory/memory.h" -#include "test/util/cleanup.h" -#include "test/util/memory_util.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -#define BITS_PER_BYTE 8 - -#define MPOL_F_STATIC_NODES (1 << 15) -#define MPOL_F_RELATIVE_NODES (1 << 14) -#define MPOL_DEFAULT 0 -#define MPOL_PREFERRED 1 -#define MPOL_BIND 2 -#define MPOL_INTERLEAVE 3 -#define MPOL_LOCAL 4 -#define MPOL_F_NODE (1 << 0) -#define MPOL_F_ADDR (1 << 1) -#define MPOL_F_MEMS_ALLOWED (1 << 2) -#define MPOL_MF_STRICT (1 << 0) -#define MPOL_MF_MOVE (1 << 1) -#define MPOL_MF_MOVE_ALL (1 << 2) - -int get_mempolicy(int* policy, uint64_t* nmask, uint64_t maxnode, void* addr, - int flags) { - return syscall(SYS_get_mempolicy, policy, nmask, maxnode, addr, flags); -} - -int set_mempolicy(int mode, uint64_t* nmask, uint64_t maxnode) { - return syscall(SYS_set_mempolicy, mode, nmask, maxnode); -} - -int mbind(void* addr, unsigned long len, int mode, - const unsigned long* nodemask, unsigned long maxnode, - unsigned flags) { - return syscall(SYS_mbind, addr, len, mode, nodemask, maxnode, flags); -} - -// Creates a cleanup object that resets the calling thread's mempolicy to the -// system default when the calling scope ends. -Cleanup ScopedMempolicy() { - return Cleanup([] { - EXPECT_THAT(set_mempolicy(MPOL_DEFAULT, nullptr, 0), SyscallSucceeds()); - }); -} - -// Temporarily change the memory policy for the calling thread within the -// caller's scope. -PosixErrorOr<Cleanup> ScopedSetMempolicy(int mode, uint64_t* nmask, - uint64_t maxnode) { - if (set_mempolicy(mode, nmask, maxnode)) { - return PosixError(errno, "set_mempolicy"); - } - return ScopedMempolicy(); -} - -TEST(MempolicyTest, CheckDefaultPolicy) { - int mode = 0; - uint64_t nodemask = 0; - ASSERT_THAT(get_mempolicy(&mode, &nodemask, sizeof(nodemask) * BITS_PER_BYTE, - nullptr, 0), - SyscallSucceeds()); - - EXPECT_EQ(MPOL_DEFAULT, mode); - EXPECT_EQ(0x0, nodemask); -} - -TEST(MempolicyTest, PolicyPreservedAfterSetMempolicy) { - uint64_t nodemask = 0x1; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE(ScopedSetMempolicy( - MPOL_BIND, &nodemask, sizeof(nodemask) * BITS_PER_BYTE)); - - int mode = 0; - uint64_t nodemask_after = 0x0; - ASSERT_THAT(get_mempolicy(&mode, &nodemask_after, - sizeof(nodemask_after) * BITS_PER_BYTE, nullptr, 0), - SyscallSucceeds()); - EXPECT_EQ(MPOL_BIND, mode); - EXPECT_EQ(0x1, nodemask_after); - - // Try throw in some mode flags. - for (auto mode_flag : {MPOL_F_STATIC_NODES, MPOL_F_RELATIVE_NODES}) { - auto cleanup2 = ASSERT_NO_ERRNO_AND_VALUE( - ScopedSetMempolicy(MPOL_INTERLEAVE | mode_flag, &nodemask, - sizeof(nodemask) * BITS_PER_BYTE)); - mode = 0; - nodemask_after = 0x0; - ASSERT_THAT( - get_mempolicy(&mode, &nodemask_after, - sizeof(nodemask_after) * BITS_PER_BYTE, nullptr, 0), - SyscallSucceeds()); - EXPECT_EQ(MPOL_INTERLEAVE | mode_flag, mode); - EXPECT_EQ(0x1, nodemask_after); - } -} - -TEST(MempolicyTest, SetMempolicyRejectsInvalidInputs) { - auto cleanup = ScopedMempolicy(); - uint64_t nodemask; - - if (IsRunningOnGvisor()) { - // Invalid nodemask, we only support a single node on gvisor. - nodemask = 0x4; - ASSERT_THAT(set_mempolicy(MPOL_DEFAULT, &nodemask, - sizeof(nodemask) * BITS_PER_BYTE), - SyscallFailsWithErrno(EINVAL)); - } - - nodemask = 0x1; - - // Invalid mode. - ASSERT_THAT(set_mempolicy(7439, &nodemask, sizeof(nodemask) * BITS_PER_BYTE), - SyscallFailsWithErrno(EINVAL)); - - // Invalid nodemask size. - ASSERT_THAT(set_mempolicy(MPOL_DEFAULT, &nodemask, 0), - SyscallFailsWithErrno(EINVAL)); - - // Invalid mode flag. - ASSERT_THAT( - set_mempolicy(MPOL_DEFAULT | MPOL_F_STATIC_NODES | MPOL_F_RELATIVE_NODES, - &nodemask, sizeof(nodemask) * BITS_PER_BYTE), - SyscallFailsWithErrno(EINVAL)); - - // MPOL_INTERLEAVE with empty nodemask. - nodemask = 0x0; - ASSERT_THAT(set_mempolicy(MPOL_INTERLEAVE, &nodemask, - sizeof(nodemask) * BITS_PER_BYTE), - SyscallFailsWithErrno(EINVAL)); -} - -// The manpages specify that the nodemask provided to set_mempolicy are -// considered empty if the nodemask pointer is null, or if the nodemask size is -// 0. We use a policy which accepts both empty and non-empty nodemasks -// (MPOL_PREFERRED), a policy which requires a non-empty nodemask (MPOL_BIND), -// and a policy which completely ignores the nodemask (MPOL_DEFAULT) to verify -// argument checking around nodemasks. -TEST(MempolicyTest, EmptyNodemaskOnSet) { - auto cleanup = ScopedMempolicy(); - - EXPECT_THAT(set_mempolicy(MPOL_DEFAULT, nullptr, 1), SyscallSucceeds()); - EXPECT_THAT(set_mempolicy(MPOL_BIND, nullptr, 1), - SyscallFailsWithErrno(EINVAL)); - EXPECT_THAT(set_mempolicy(MPOL_PREFERRED, nullptr, 1), SyscallSucceeds()); - - uint64_t nodemask = 0x1; - EXPECT_THAT(set_mempolicy(MPOL_DEFAULT, &nodemask, 0), - SyscallFailsWithErrno(EINVAL)); - EXPECT_THAT(set_mempolicy(MPOL_BIND, &nodemask, 0), - SyscallFailsWithErrno(EINVAL)); - EXPECT_THAT(set_mempolicy(MPOL_PREFERRED, &nodemask, 0), - SyscallFailsWithErrno(EINVAL)); -} - -TEST(MempolicyTest, QueryAvailableNodes) { - uint64_t nodemask = 0; - ASSERT_THAT( - get_mempolicy(nullptr, &nodemask, sizeof(nodemask) * BITS_PER_BYTE, - nullptr, MPOL_F_MEMS_ALLOWED), - SyscallSucceeds()); - // We can only be sure there is a single node if running on gvisor. - if (IsRunningOnGvisor()) { - EXPECT_EQ(0x1, nodemask); - } - - // MPOL_F_ADDR and MPOL_F_NODE flags may not be combined with - // MPOL_F_MEMS_ALLLOWED. - for (auto flags : - {MPOL_F_MEMS_ALLOWED | MPOL_F_ADDR, MPOL_F_MEMS_ALLOWED | MPOL_F_NODE, - MPOL_F_MEMS_ALLOWED | MPOL_F_ADDR | MPOL_F_NODE}) { - ASSERT_THAT(get_mempolicy(nullptr, &nodemask, - sizeof(nodemask) * BITS_PER_BYTE, nullptr, flags), - SyscallFailsWithErrno(EINVAL)); - } -} - -TEST(MempolicyTest, GetMempolicyQueryNodeForAddress) { - uint64_t dummy_stack_address; - auto dummy_heap_address = absl::make_unique<uint64_t>(); - int mode; - - for (auto ptr : {&dummy_stack_address, dummy_heap_address.get()}) { - mode = -1; - ASSERT_THAT( - get_mempolicy(&mode, nullptr, 0, ptr, MPOL_F_ADDR | MPOL_F_NODE), - SyscallSucceeds()); - // If we're not running on gvisor, the address may be allocated on a - // different numa node. - if (IsRunningOnGvisor()) { - EXPECT_EQ(0, mode); - } - } - - void* invalid_address = reinterpret_cast<void*>(-1); - - // Invalid address. - ASSERT_THAT(get_mempolicy(&mode, nullptr, 0, invalid_address, - MPOL_F_ADDR | MPOL_F_NODE), - SyscallFailsWithErrno(EFAULT)); - - // Invalid mode pointer. - ASSERT_THAT(get_mempolicy(reinterpret_cast<int*>(invalid_address), nullptr, 0, - &dummy_stack_address, MPOL_F_ADDR | MPOL_F_NODE), - SyscallFailsWithErrno(EFAULT)); -} - -TEST(MempolicyTest, GetMempolicyCanOmitPointers) { - int mode; - uint64_t nodemask; - - // Omit nodemask pointer. - ASSERT_THAT(get_mempolicy(&mode, nullptr, 0, nullptr, 0), SyscallSucceeds()); - // Omit mode pointer. - ASSERT_THAT(get_mempolicy(nullptr, &nodemask, - sizeof(nodemask) * BITS_PER_BYTE, nullptr, 0), - SyscallSucceeds()); - // Omit both pointers. - ASSERT_THAT(get_mempolicy(nullptr, nullptr, 0, nullptr, 0), - SyscallSucceeds()); -} - -TEST(MempolicyTest, GetMempolicyNextInterleaveNode) { - int mode; - // Policy for thread not yet set to MPOL_INTERLEAVE, can't query for - // the next node which will be used for allocation. - ASSERT_THAT(get_mempolicy(&mode, nullptr, 0, nullptr, MPOL_F_NODE), - SyscallFailsWithErrno(EINVAL)); - - // Set default policy for thread to MPOL_INTERLEAVE. - uint64_t nodemask = 0x1; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE(ScopedSetMempolicy( - MPOL_INTERLEAVE, &nodemask, sizeof(nodemask) * BITS_PER_BYTE)); - - mode = -1; - ASSERT_THAT(get_mempolicy(&mode, nullptr, 0, nullptr, MPOL_F_NODE), - SyscallSucceeds()); - EXPECT_EQ(0, mode); -} - -TEST(MempolicyTest, Mbind) { - // Temporarily set the thread policy to MPOL_PREFERRED. - const auto cleanup_thread_policy = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSetMempolicy(MPOL_PREFERRED, nullptr, 0)); - - const auto mapping = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS)); - - // vmas default to MPOL_DEFAULT irrespective of the thread policy (currently - // MPOL_PREFERRED). - int mode; - ASSERT_THAT(get_mempolicy(&mode, nullptr, 0, mapping.ptr(), MPOL_F_ADDR), - SyscallSucceeds()); - EXPECT_EQ(mode, MPOL_DEFAULT); - - // Set MPOL_PREFERRED for the vma and read it back. - ASSERT_THAT( - mbind(mapping.ptr(), mapping.len(), MPOL_PREFERRED, nullptr, 0, 0), - SyscallSucceeds()); - ASSERT_THAT(get_mempolicy(&mode, nullptr, 0, mapping.ptr(), MPOL_F_ADDR), - SyscallSucceeds()); - EXPECT_EQ(mode, MPOL_PREFERRED); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/mincore.cc b/test/syscalls/linux/mincore.cc deleted file mode 100644 index 5c1240c89..000000000 --- a/test/syscalls/linux/mincore.cc +++ /dev/null @@ -1,96 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <stdint.h> -#include <string.h> -#include <sys/mman.h> -#include <unistd.h> - -#include <algorithm> -#include <vector> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "test/util/memory_util.h" -#include "test/util/posix_error.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -size_t CountSetLSBs(std::vector<unsigned char> const& vec) { - return std::count_if(begin(vec), end(vec), - [](unsigned char c) { return (c & 1) != 0; }); -} - -TEST(MincoreTest, DirtyAnonPagesAreResident) { - constexpr size_t kTestPageCount = 10; - auto const kTestMappingBytes = kTestPageCount * kPageSize; - auto m = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(kTestMappingBytes, PROT_READ | PROT_WRITE, MAP_PRIVATE)); - memset(m.ptr(), 0, m.len()); - - std::vector<unsigned char> vec(kTestPageCount, 0); - ASSERT_THAT(mincore(m.ptr(), kTestMappingBytes, vec.data()), - SyscallSucceeds()); - EXPECT_EQ(kTestPageCount, CountSetLSBs(vec)); -} - -TEST(MincoreTest, UnalignedAddressFails) { - // Map and touch two pages, then try to mincore the second half of the first - // page + the first half of the second page. Both pages are mapped, but - // mincore should return EINVAL due to the misaligned start address. - constexpr size_t kTestPageCount = 2; - auto const kTestMappingBytes = kTestPageCount * kPageSize; - auto m = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(kTestMappingBytes, PROT_READ | PROT_WRITE, MAP_PRIVATE)); - memset(m.ptr(), 0, m.len()); - - std::vector<unsigned char> vec(kTestPageCount, 0); - EXPECT_THAT(mincore(reinterpret_cast<void*>(m.addr() + kPageSize / 2), - kPageSize, vec.data()), - SyscallFailsWithErrno(EINVAL)); -} - -TEST(MincoreTest, UnalignedLengthSucceedsAndIsRoundedUp) { - // Map and touch two pages, then try to mincore the first page + the first - // half of the second page. mincore should silently round up the length to - // include both pages. - constexpr size_t kTestPageCount = 2; - auto const kTestMappingBytes = kTestPageCount * kPageSize; - auto m = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(kTestMappingBytes, PROT_READ | PROT_WRITE, MAP_PRIVATE)); - memset(m.ptr(), 0, m.len()); - - std::vector<unsigned char> vec(kTestPageCount, 0); - ASSERT_THAT(mincore(m.ptr(), kPageSize + kPageSize / 2, vec.data()), - SyscallSucceeds()); - EXPECT_EQ(kTestPageCount, CountSetLSBs(vec)); -} - -TEST(MincoreTest, ZeroLengthSucceedsAndAllowsAnyVecBelowTaskSize) { - EXPECT_THAT(mincore(nullptr, 0, nullptr), SyscallSucceeds()); -} - -TEST(MincoreTest, InvalidLengthFails) { - EXPECT_THAT(mincore(nullptr, -1, nullptr), SyscallFailsWithErrno(ENOMEM)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/mkdir.cc b/test/syscalls/linux/mkdir.cc deleted file mode 100644 index cf138d328..000000000 --- a/test/syscalls/linux/mkdir.cc +++ /dev/null @@ -1,96 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <fcntl.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "test/syscalls/linux/temp_umask.h" -#include "test/util/capability_util.h" -#include "test/util/fs_util.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -class MkdirTest : public ::testing::Test { - protected: - // SetUp creates various configurations of files. - void SetUp() override { dirname_ = NewTempAbsPath(); } - - // TearDown unlinks created files. - void TearDown() override { - // FIXME(edahlgren): We don't currently implement rmdir. - // We do this unconditionally because there's no harm in trying. - rmdir(dirname_.c_str()); - } - - std::string dirname_; -}; - -TEST_F(MkdirTest, DISABLED_CanCreateReadbleDir) { - ASSERT_THAT(mkdir(dirname_.c_str(), 0444), SyscallSucceeds()); - ASSERT_THAT( - open(JoinPath(dirname_, "anything").c_str(), O_RDWR | O_CREAT, 0666), - SyscallFailsWithErrno(EACCES)); -} - -TEST_F(MkdirTest, CanCreateWritableDir) { - ASSERT_THAT(mkdir(dirname_.c_str(), 0777), SyscallSucceeds()); - std::string filename = JoinPath(dirname_, "anything"); - int fd; - ASSERT_THAT(fd = open(filename.c_str(), O_RDWR | O_CREAT, 0666), - SyscallSucceeds()); - EXPECT_THAT(close(fd), SyscallSucceeds()); - ASSERT_THAT(unlink(filename.c_str()), SyscallSucceeds()); -} - -TEST_F(MkdirTest, HonorsUmask) { - constexpr mode_t kMask = 0111; - TempUmask mask(kMask); - ASSERT_THAT(mkdir(dirname_.c_str(), 0777), SyscallSucceeds()); - struct stat statbuf; - ASSERT_THAT(stat(dirname_.c_str(), &statbuf), SyscallSucceeds()); - EXPECT_EQ(0777 & ~kMask, statbuf.st_mode & 0777); -} - -TEST_F(MkdirTest, HonorsUmask2) { - constexpr mode_t kMask = 0142; - TempUmask mask(kMask); - ASSERT_THAT(mkdir(dirname_.c_str(), 0777), SyscallSucceeds()); - struct stat statbuf; - ASSERT_THAT(stat(dirname_.c_str(), &statbuf), SyscallSucceeds()); - EXPECT_EQ(0777 & ~kMask, statbuf.st_mode & 0777); -} - -TEST_F(MkdirTest, FailsOnDirWithoutWritePerms) { - // Drop capabilities that allow us to override file and directory permissions. - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_READ_SEARCH, false)); - - auto parent = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateDirWith(GetAbsoluteTestTmpdir(), 0555)); - auto dir = JoinPath(parent.path(), "foo"); - ASSERT_THAT(mkdir(dir.c_str(), 0777), SyscallFailsWithErrno(EACCES)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/mknod.cc b/test/syscalls/linux/mknod.cc deleted file mode 100644 index 4c45766c7..000000000 --- a/test/syscalls/linux/mknod.cc +++ /dev/null @@ -1,168 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <fcntl.h> -#include <sys/stat.h> -#include <sys/un.h> -#include <unistd.h> - -#include <vector> - -#include "gtest/gtest.h" -#include "test/util/file_descriptor.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -TEST(MknodTest, RegularFile) { - const std::string node0 = NewTempAbsPath(); - EXPECT_THAT(mknod(node0.c_str(), S_IFREG, 0), SyscallSucceeds()); - - const std::string node1 = NewTempAbsPath(); - EXPECT_THAT(mknod(node1.c_str(), 0, 0), SyscallSucceeds()); -} - -TEST(MknodTest, MknodAtRegularFile) { - const TempPath dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const std::string fifo_relpath = NewTempRelPath(); - const std::string fifo = JoinPath(dir.path(), fifo_relpath); - - const FileDescriptor dirfd = - ASSERT_NO_ERRNO_AND_VALUE(Open(dir.path().c_str(), O_RDONLY)); - ASSERT_THAT(mknodat(dirfd.get(), fifo_relpath.c_str(), S_IFIFO | S_IRUSR, 0), - SyscallSucceeds()); - - struct stat st; - ASSERT_THAT(stat(fifo.c_str(), &st), SyscallSucceeds()); - EXPECT_TRUE(S_ISFIFO(st.st_mode)); -} - -TEST(MknodTest, MknodOnExistingPathFails) { - const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const TempPath slink = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateSymlinkTo(GetAbsoluteTestTmpdir(), file.path())); - - EXPECT_THAT(mknod(file.path().c_str(), S_IFREG, 0), - SyscallFailsWithErrno(EEXIST)); - EXPECT_THAT(mknod(file.path().c_str(), S_IFIFO, 0), - SyscallFailsWithErrno(EEXIST)); - EXPECT_THAT(mknod(slink.path().c_str(), S_IFREG, 0), - SyscallFailsWithErrno(EEXIST)); - EXPECT_THAT(mknod(slink.path().c_str(), S_IFIFO, 0), - SyscallFailsWithErrno(EEXIST)); -} - -TEST(MknodTest, UnimplementedTypesReturnError) { - const std::string path = NewTempAbsPath(); - - if (IsRunningOnGvisor()) { - ASSERT_THAT(mknod(path.c_str(), S_IFSOCK, 0), - SyscallFailsWithErrno(EOPNOTSUPP)); - } - // These will fail on linux as well since we don't have CAP_MKNOD. - ASSERT_THAT(mknod(path.c_str(), S_IFCHR, 0), SyscallFailsWithErrno(EPERM)); - ASSERT_THAT(mknod(path.c_str(), S_IFBLK, 0), SyscallFailsWithErrno(EPERM)); -} - -TEST(MknodTest, Fifo) { - const std::string fifo = NewTempAbsPath(); - ASSERT_THAT(mknod(fifo.c_str(), S_IFIFO | S_IRUSR | S_IWUSR, 0), - SyscallSucceeds()); - - struct stat st; - ASSERT_THAT(stat(fifo.c_str(), &st), SyscallSucceeds()); - EXPECT_TRUE(S_ISFIFO(st.st_mode)); - - std::string msg = "some std::string"; - std::vector<char> buf(512); - - // Read-end of the pipe. - ScopedThread t([&fifo, &buf, &msg]() { - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(fifo.c_str(), O_RDONLY)); - EXPECT_THAT(ReadFd(fd.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(msg.length())); - EXPECT_EQ(msg, std::string(buf.data())); - }); - - // Write-end of the pipe. - FileDescriptor wfd = ASSERT_NO_ERRNO_AND_VALUE(Open(fifo.c_str(), O_WRONLY)); - EXPECT_THAT(WriteFd(wfd.get(), msg.c_str(), msg.length()), - SyscallSucceedsWithValue(msg.length())); -} - -TEST(MknodTest, FifoOtrunc) { - const std::string fifo = NewTempAbsPath(); - ASSERT_THAT(mknod(fifo.c_str(), S_IFIFO | S_IRUSR | S_IWUSR, 0), - SyscallSucceeds()); - - struct stat st = {}; - ASSERT_THAT(stat(fifo.c_str(), &st), SyscallSucceeds()); - EXPECT_TRUE(S_ISFIFO(st.st_mode)); - - std::string msg = "some std::string"; - std::vector<char> buf(512); - // Read-end of the pipe. - ScopedThread t([&fifo, &buf, &msg]() { - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(fifo.c_str(), O_RDONLY)); - EXPECT_THAT(ReadFd(fd.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(msg.length())); - EXPECT_EQ(msg, std::string(buf.data())); - }); - - // Write-end of the pipe. - FileDescriptor wfd = - ASSERT_NO_ERRNO_AND_VALUE(Open(fifo.c_str(), O_WRONLY | O_TRUNC)); - EXPECT_THAT(WriteFd(wfd.get(), msg.c_str(), msg.length()), - SyscallSucceedsWithValue(msg.length())); -} - -TEST(MknodTest, FifoTruncNoOp) { - const std::string fifo = NewTempAbsPath(); - ASSERT_THAT(mknod(fifo.c_str(), S_IFIFO | S_IRUSR | S_IWUSR, 0), - SyscallSucceeds()); - - EXPECT_THAT(truncate(fifo.c_str(), 0), SyscallFailsWithErrno(EINVAL)); - - struct stat st = {}; - ASSERT_THAT(stat(fifo.c_str(), &st), SyscallSucceeds()); - EXPECT_TRUE(S_ISFIFO(st.st_mode)); - - std::string msg = "some std::string"; - std::vector<char> buf(512); - // Read-end of the pipe. - ScopedThread t([&fifo, &buf, &msg]() { - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(fifo.c_str(), O_RDONLY)); - EXPECT_THAT(ReadFd(fd.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(msg.length())); - EXPECT_EQ(msg, std::string(buf.data())); - }); - - FileDescriptor wfd = - ASSERT_NO_ERRNO_AND_VALUE(Open(fifo.c_str(), O_WRONLY | O_TRUNC)); - EXPECT_THAT(ftruncate(wfd.get(), 0), SyscallFailsWithErrno(EINVAL)); - EXPECT_THAT(WriteFd(wfd.get(), msg.c_str(), msg.length()), - SyscallSucceedsWithValue(msg.length())); - EXPECT_THAT(ftruncate(wfd.get(), 0), SyscallFailsWithErrno(EINVAL)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/mlock.cc b/test/syscalls/linux/mlock.cc deleted file mode 100644 index 367a90fe1..000000000 --- a/test/syscalls/linux/mlock.cc +++ /dev/null @@ -1,330 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <sys/mman.h> -#include <sys/resource.h> -#include <sys/syscall.h> -#include <unistd.h> - -#include <cerrno> -#include <cstring> - -#include "gmock/gmock.h" -#include "test/util/capability_util.h" -#include "test/util/cleanup.h" -#include "test/util/memory_util.h" -#include "test/util/multiprocess_util.h" -#include "test/util/rlimit_util.h" -#include "test/util/test_util.h" - -using ::testing::_; - -namespace gvisor { -namespace testing { - -namespace { - -PosixErrorOr<bool> CanMlock() { - struct rlimit rlim; - if (getrlimit(RLIMIT_MEMLOCK, &rlim) < 0) { - return PosixError(errno, "getrlimit(RLIMIT_MEMLOCK)"); - } - if (rlim.rlim_cur != 0) { - return true; - } - return HaveCapability(CAP_IPC_LOCK); -} - -// Returns true if the page containing addr is mlocked. -bool IsPageMlocked(uintptr_t addr) { - // This relies on msync(MS_INVALIDATE) interacting correctly with mlocked - // pages, which is tested for by the MsyncInvalidate case below. - int const rv = msync(reinterpret_cast<void*>(addr & ~(kPageSize - 1)), - kPageSize, MS_ASYNC | MS_INVALIDATE); - if (rv == 0) { - return false; - } - // This uses TEST_PCHECK_MSG since it's used in subprocesses. - TEST_PCHECK_MSG(errno == EBUSY, "msync failed with unexpected errno"); - return true; -} - -TEST(MlockTest, Basic) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(CanMlock())); - auto const mapping = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE)); - EXPECT_FALSE(IsPageMlocked(mapping.addr())); - ASSERT_THAT(mlock(mapping.ptr(), mapping.len()), SyscallSucceeds()); - EXPECT_TRUE(IsPageMlocked(mapping.addr())); -} - -TEST(MlockTest, ProtNone) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(CanMlock())); - auto const mapping = - ASSERT_NO_ERRNO_AND_VALUE(MmapAnon(kPageSize, PROT_NONE, MAP_PRIVATE)); - EXPECT_FALSE(IsPageMlocked(mapping.addr())); - ASSERT_THAT(mlock(mapping.ptr(), mapping.len()), - SyscallFailsWithErrno(ENOMEM)); - // ENOMEM is returned because mlock can't populate the page, but it's still - // considered locked. - EXPECT_TRUE(IsPageMlocked(mapping.addr())); -} - -TEST(MlockTest, MadviseDontneed) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(CanMlock())); - auto const mapping = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE)); - ASSERT_THAT(mlock(mapping.ptr(), mapping.len()), SyscallSucceeds()); - EXPECT_THAT(madvise(mapping.ptr(), mapping.len(), MADV_DONTNEED), - SyscallFailsWithErrno(EINVAL)); -} - -TEST(MlockTest, MsyncInvalidate) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(CanMlock())); - auto const mapping = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE)); - ASSERT_THAT(mlock(mapping.ptr(), mapping.len()), SyscallSucceeds()); - EXPECT_THAT(msync(mapping.ptr(), mapping.len(), MS_ASYNC | MS_INVALIDATE), - SyscallFailsWithErrno(EBUSY)); - EXPECT_THAT(msync(mapping.ptr(), mapping.len(), MS_SYNC | MS_INVALIDATE), - SyscallFailsWithErrno(EBUSY)); -} - -TEST(MlockTest, Fork) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(CanMlock())); - auto const mapping = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE)); - EXPECT_FALSE(IsPageMlocked(mapping.addr())); - ASSERT_THAT(mlock(mapping.ptr(), mapping.len()), SyscallSucceeds()); - EXPECT_TRUE(IsPageMlocked(mapping.addr())); - EXPECT_THAT( - InForkedProcess([&] { TEST_CHECK(!IsPageMlocked(mapping.addr())); }), - IsPosixErrorOkAndHolds(0)); -} - -TEST(MlockTest, RlimitMemlockZero) { - if (ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_IPC_LOCK))) { - ASSERT_NO_ERRNO(SetCapability(CAP_IPC_LOCK, false)); - } - Cleanup reset_rlimit = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSetSoftRlimit(RLIMIT_MEMLOCK, 0)); - auto const mapping = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE)); - EXPECT_FALSE(IsPageMlocked(mapping.addr())); - ASSERT_THAT(mlock(mapping.ptr(), mapping.len()), - SyscallFailsWithErrno(EPERM)); -} - -TEST(MlockTest, RlimitMemlockInsufficient) { - if (ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_IPC_LOCK))) { - ASSERT_NO_ERRNO(SetCapability(CAP_IPC_LOCK, false)); - } - Cleanup reset_rlimit = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSetSoftRlimit(RLIMIT_MEMLOCK, kPageSize)); - auto const mapping = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(2 * kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE)); - EXPECT_FALSE(IsPageMlocked(mapping.addr())); - ASSERT_THAT(mlock(mapping.ptr(), mapping.len()), - SyscallFailsWithErrno(ENOMEM)); -} - -TEST(MunlockTest, Basic) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(CanMlock())); - auto const mapping = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE)); - EXPECT_FALSE(IsPageMlocked(mapping.addr())); - ASSERT_THAT(mlock(mapping.ptr(), mapping.len()), SyscallSucceeds()); - EXPECT_TRUE(IsPageMlocked(mapping.addr())); - ASSERT_THAT(munlock(mapping.ptr(), mapping.len()), SyscallSucceeds()); - EXPECT_FALSE(IsPageMlocked(mapping.addr())); -} - -TEST(MunlockTest, NotLocked) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(CanMlock())); - auto const mapping = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE)); - EXPECT_FALSE(IsPageMlocked(mapping.addr())); - EXPECT_THAT(munlock(mapping.ptr(), mapping.len()), SyscallSucceeds()); - EXPECT_FALSE(IsPageMlocked(mapping.addr())); -} - -// There is currently no test for mlockall(MCL_CURRENT) because the default -// RLIMIT_MEMLOCK of 64 KB is insufficient to actually invoke -// mlockall(MCL_CURRENT). - -TEST(MlockallTest, Future) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(CanMlock())); - - // Run this test in a separate (single-threaded) subprocess to ensure that a - // background thread doesn't try to mmap a large amount of memory, fail due - // to hitting RLIMIT_MEMLOCK, and explode the process violently. - auto const do_test = [] { - auto const mapping = - MmapAnon(kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE).ValueOrDie(); - TEST_CHECK(!IsPageMlocked(mapping.addr())); - TEST_PCHECK(mlockall(MCL_FUTURE) == 0); - // Ensure that mlockall(MCL_FUTURE) is turned off before the end of the - // test, as otherwise mmaps may fail unexpectedly. - Cleanup do_munlockall([] { TEST_PCHECK(munlockall() == 0); }); - auto const mapping2 = - MmapAnon(kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE).ValueOrDie(); - TEST_CHECK(IsPageMlocked(mapping2.addr())); - // Fire munlockall() and check that it disables mlockall(MCL_FUTURE). - do_munlockall.Release()(); - auto const mapping3 = - MmapAnon(kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE).ValueOrDie(); - TEST_CHECK(!IsPageMlocked(mapping2.addr())); - }; - EXPECT_THAT(InForkedProcess(do_test), IsPosixErrorOkAndHolds(0)); -} - -TEST(MunlockallTest, Basic) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(CanMlock())); - auto const mapping = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_LOCKED)); - EXPECT_TRUE(IsPageMlocked(mapping.addr())); - ASSERT_THAT(munlockall(), SyscallSucceeds()); - EXPECT_FALSE(IsPageMlocked(mapping.addr())); -} - -#ifndef SYS_mlock2 -#ifdef __x86_64__ -#define SYS_mlock2 325 -#endif -#endif - -#ifndef MLOCK_ONFAULT -#define MLOCK_ONFAULT 0x01 // Linux: include/uapi/asm-generic/mman-common.h -#endif - -#ifdef SYS_mlock2 - -int mlock2(void const* addr, size_t len, int flags) { - return syscall(SYS_mlock2, addr, len, flags); -} - -TEST(Mlock2Test, NoFlags) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(CanMlock())); - auto const mapping = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE)); - EXPECT_FALSE(IsPageMlocked(mapping.addr())); - ASSERT_THAT(mlock2(mapping.ptr(), mapping.len(), 0), SyscallSucceeds()); - EXPECT_TRUE(IsPageMlocked(mapping.addr())); -} - -TEST(Mlock2Test, MlockOnfault) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(CanMlock())); - auto const mapping = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE)); - EXPECT_FALSE(IsPageMlocked(mapping.addr())); - ASSERT_THAT(mlock2(mapping.ptr(), mapping.len(), MLOCK_ONFAULT), - SyscallSucceeds()); - EXPECT_TRUE(IsPageMlocked(mapping.addr())); -} - -TEST(Mlock2Test, UnknownFlags) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(CanMlock())); - auto const mapping = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE)); - EXPECT_THAT(mlock2(mapping.ptr(), mapping.len(), ~0), - SyscallFailsWithErrno(EINVAL)); -} - -#endif // defined(SYS_mlock2) - -TEST(MapLockedTest, Basic) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(CanMlock())); - auto const mapping = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_LOCKED)); - EXPECT_TRUE(IsPageMlocked(mapping.addr())); - EXPECT_THAT(munlock(mapping.ptr(), mapping.len()), SyscallSucceeds()); - EXPECT_FALSE(IsPageMlocked(mapping.addr())); -} - -TEST(MapLockedTest, RlimitMemlockZero) { - if (ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_IPC_LOCK))) { - ASSERT_NO_ERRNO(SetCapability(CAP_IPC_LOCK, false)); - } - Cleanup reset_rlimit = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSetSoftRlimit(RLIMIT_MEMLOCK, 0)); - EXPECT_THAT( - MmapAnon(kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_LOCKED), - PosixErrorIs(EPERM, _)); -} - -TEST(MapLockedTest, RlimitMemlockInsufficient) { - if (ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_IPC_LOCK))) { - ASSERT_NO_ERRNO(SetCapability(CAP_IPC_LOCK, false)); - } - Cleanup reset_rlimit = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSetSoftRlimit(RLIMIT_MEMLOCK, kPageSize)); - EXPECT_THAT( - MmapAnon(2 * kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_LOCKED), - PosixErrorIs(EAGAIN, _)); -} - -TEST(MremapLockedTest, Basic) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(CanMlock())); - auto mapping = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_LOCKED)); - EXPECT_TRUE(IsPageMlocked(mapping.addr())); - - void* addr = mremap(mapping.ptr(), mapping.len(), 2 * mapping.len(), - MREMAP_MAYMOVE, nullptr); - if (addr == MAP_FAILED) { - FAIL() << "mremap failed: " << errno << " (" << strerror(errno) << ")"; - } - mapping.release(); - mapping.reset(addr, 2 * mapping.len()); - EXPECT_TRUE(IsPageMlocked(reinterpret_cast<uintptr_t>(addr))); -} - -TEST(MremapLockedTest, RlimitMemlockZero) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(CanMlock())); - auto mapping = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_LOCKED)); - EXPECT_TRUE(IsPageMlocked(mapping.addr())); - - if (ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_IPC_LOCK))) { - ASSERT_NO_ERRNO(SetCapability(CAP_IPC_LOCK, false)); - } - Cleanup reset_rlimit = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSetSoftRlimit(RLIMIT_MEMLOCK, 0)); - void* addr = mremap(mapping.ptr(), mapping.len(), 2 * mapping.len(), - MREMAP_MAYMOVE, nullptr); - EXPECT_TRUE(addr == MAP_FAILED && errno == EAGAIN) - << "addr = " << addr << ", errno = " << errno; -} - -TEST(MremapLockedTest, RlimitMemlockInsufficient) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(CanMlock())); - auto mapping = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_LOCKED)); - EXPECT_TRUE(IsPageMlocked(mapping.addr())); - - if (ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_IPC_LOCK))) { - ASSERT_NO_ERRNO(SetCapability(CAP_IPC_LOCK, false)); - } - Cleanup reset_rlimit = ASSERT_NO_ERRNO_AND_VALUE( - ScopedSetSoftRlimit(RLIMIT_MEMLOCK, mapping.len())); - void* addr = mremap(mapping.ptr(), mapping.len(), 2 * mapping.len(), - MREMAP_MAYMOVE, nullptr); - EXPECT_TRUE(addr == MAP_FAILED && errno == EAGAIN) - << "addr = " << addr << ", errno = " << errno; -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/mmap.cc b/test/syscalls/linux/mmap.cc deleted file mode 100644 index 11fb1b457..000000000 --- a/test/syscalls/linux/mmap.cc +++ /dev/null @@ -1,1670 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <fcntl.h> -#include <linux/magic.h> -#include <linux/unistd.h> -#include <signal.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <sys/mman.h> -#include <sys/resource.h> -#include <sys/statfs.h> -#include <sys/syscall.h> -#include <sys/time.h> -#include <sys/types.h> -#include <sys/wait.h> -#include <unistd.h> - -#include <vector> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "absl/strings/escaping.h" -#include "absl/strings/str_split.h" -#include "test/util/cleanup.h" -#include "test/util/file_descriptor.h" -#include "test/util/fs_util.h" -#include "test/util/memory_util.h" -#include "test/util/multiprocess_util.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -using ::testing::Gt; - -namespace gvisor { -namespace testing { - -namespace { - -PosixErrorOr<int64_t> VirtualMemorySize() { - ASSIGN_OR_RETURN_ERRNO(auto contents, GetContents("/proc/self/statm")); - std::vector<std::string> parts = absl::StrSplit(contents, ' '); - if (parts.empty()) { - return PosixError(EINVAL, "Unable to parse /proc/self/statm"); - } - ASSIGN_OR_RETURN_ERRNO(auto pages, Atoi<int64_t>(parts[0])); - return pages * getpagesize(); -} - -class MMapTest : public ::testing::Test { - protected: - // Unmap mapping, if one was made. - void TearDown() override { - if (addr_) { - EXPECT_THAT(Unmap(), SyscallSucceeds()); - } - } - - // Remembers mapping, so it can be automatically unmapped. - uintptr_t Map(uintptr_t addr, size_t length, int prot, int flags, int fd, - off_t offset) { - void* ret = - mmap(reinterpret_cast<void*>(addr), length, prot, flags, fd, offset); - - if (ret != MAP_FAILED) { - addr_ = ret; - length_ = length; - } - - return reinterpret_cast<uintptr_t>(ret); - } - - // Unmap previous mapping - int Unmap() { - if (!addr_) { - return -1; - } - - int ret = munmap(addr_, length_); - - addr_ = nullptr; - length_ = 0; - - return ret; - } - - // Msync the mapping. - int Msync() { return msync(addr_, length_, MS_SYNC); } - - // Mlock the mapping. - int Mlock() { return mlock(addr_, length_); } - - // Munlock the mapping. - int Munlock() { return munlock(addr_, length_); } - - int Protect(uintptr_t addr, size_t length, int prot) { - return mprotect(reinterpret_cast<void*>(addr), length, prot); - } - - void* addr_ = nullptr; - size_t length_ = 0; -}; - -// Matches if arg contains the same contents as string str. -MATCHER_P(EqualsMemory, str, "") { - if (0 == memcmp(arg, str.c_str(), str.size())) { - return true; - } - - *result_listener << "Memory did not match. Got:\n" - << absl::BytesToHexString( - std::string(static_cast<char*>(arg), str.size())) - << "Want:\n" - << absl::BytesToHexString(str); - return false; -} - -// We can't map pipes, but for different reasons. -TEST_F(MMapTest, MapPipe) { - int fds[2]; - ASSERT_THAT(pipe(fds), SyscallSucceeds()); - EXPECT_THAT(Map(0, kPageSize, PROT_READ, MAP_PRIVATE, fds[0], 0), - SyscallFailsWithErrno(ENODEV)); - EXPECT_THAT(Map(0, kPageSize, PROT_READ, MAP_PRIVATE, fds[1], 0), - SyscallFailsWithErrno(EACCES)); - ASSERT_THAT(close(fds[0]), SyscallSucceeds()); - ASSERT_THAT(close(fds[1]), SyscallSucceeds()); -} - -// It's very common to mmap /dev/zero because anonymous mappings aren't part -// of POSIX although they are widely supported. So a zero initialized memory -// region would actually come from a "file backed" /dev/zero mapping. -TEST_F(MMapTest, MapDevZeroShared) { - // This test will verify that we're able to map a page backed by /dev/zero - // as MAP_SHARED. - const FileDescriptor dev_zero = - ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/zero", O_RDWR)); - - // Test that we can create a RW SHARED mapping of /dev/zero. - ASSERT_THAT( - Map(0, kPageSize, PROT_READ | PROT_WRITE, MAP_SHARED, dev_zero.get(), 0), - SyscallSucceeds()); -} - -TEST_F(MMapTest, MapDevZeroPrivate) { - // This test will verify that we're able to map a page backed by /dev/zero - // as MAP_PRIVATE. - const FileDescriptor dev_zero = - ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/zero", O_RDWR)); - - // Test that we can create a RW SHARED mapping of /dev/zero. - ASSERT_THAT( - Map(0, kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE, dev_zero.get(), 0), - SyscallSucceeds()); -} - -TEST_F(MMapTest, MapDevZeroNoPersistence) { - // This test will verify that two independent mappings of /dev/zero do not - // appear to reference the same "backed file." - - const FileDescriptor dev_zero1 = - ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/zero", O_RDWR)); - const FileDescriptor dev_zero2 = - ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/zero", O_RDWR)); - - ASSERT_THAT( - Map(0, kPageSize, PROT_READ | PROT_WRITE, MAP_SHARED, dev_zero1.get(), 0), - SyscallSucceeds()); - - // Create a second mapping via the second /dev/zero fd. - void* psec_map = mmap(nullptr, kPageSize, PROT_READ | PROT_WRITE, MAP_SHARED, - dev_zero2.get(), 0); - ASSERT_THAT(reinterpret_cast<intptr_t>(psec_map), SyscallSucceeds()); - - // Always unmap. - auto cleanup_psec_map = Cleanup( - [&] { EXPECT_THAT(munmap(psec_map, kPageSize), SyscallSucceeds()); }); - - // Verify that we have independently addressed pages. - ASSERT_NE(psec_map, addr_); - - std::string buf_zero(kPageSize, 0x00); - std::string buf_ones(kPageSize, 0xFF); - - // Verify the first is actually all zeros after mmap. - EXPECT_THAT(addr_, EqualsMemory(buf_zero)); - - // Let's fill in the first mapping with 0xFF. - memcpy(addr_, buf_ones.data(), kPageSize); - - // Verify that the memcpy actually stuck in the page. - EXPECT_THAT(addr_, EqualsMemory(buf_ones)); - - // Verify that it didn't affect the second page which should be all zeros. - EXPECT_THAT(psec_map, EqualsMemory(buf_zero)); -} - -TEST_F(MMapTest, MapDevZeroSharedMultiplePages) { - // This will test that we're able to map /dev/zero over multiple pages. - const FileDescriptor dev_zero = - ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/zero", O_RDWR)); - - // Test that we can create a RW SHARED mapping of /dev/zero. - ASSERT_THAT(Map(0, kPageSize * 2, PROT_READ | PROT_WRITE, MAP_PRIVATE, - dev_zero.get(), 0), - SyscallSucceeds()); - - std::string buf_zero(kPageSize * 2, 0x00); - std::string buf_ones(kPageSize * 2, 0xFF); - - // Verify the two pages are actually all zeros after mmap. - EXPECT_THAT(addr_, EqualsMemory(buf_zero)); - - // Fill out the pages with all ones. - memcpy(addr_, buf_ones.data(), kPageSize * 2); - - // Verify that the memcpy actually stuck in the pages. - EXPECT_THAT(addr_, EqualsMemory(buf_ones)); -} - -TEST_F(MMapTest, MapDevZeroSharedFdNoPersistence) { - // This test will verify that two independent mappings of /dev/zero do not - // appear to reference the same "backed file" even when mapped from the - // same initial fd. - const FileDescriptor dev_zero = - ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/zero", O_RDWR)); - - ASSERT_THAT( - Map(0, kPageSize, PROT_READ | PROT_WRITE, MAP_SHARED, dev_zero.get(), 0), - SyscallSucceeds()); - - // Create a second mapping via the same fd. - void* psec_map = mmap(nullptr, kPageSize, PROT_READ | PROT_WRITE, MAP_SHARED, - dev_zero.get(), 0); - ASSERT_THAT(reinterpret_cast<int64_t>(psec_map), SyscallSucceeds()); - - // Always unmap. - auto cleanup_psec_map = Cleanup( - [&] { ASSERT_THAT(munmap(psec_map, kPageSize), SyscallSucceeds()); }); - - // Verify that we have independently addressed pages. - ASSERT_NE(psec_map, addr_); - - std::string buf_zero(kPageSize, 0x00); - std::string buf_ones(kPageSize, 0xFF); - - // Verify the first is actually all zeros after mmap. - EXPECT_THAT(addr_, EqualsMemory(buf_zero)); - - // Let's fill in the first mapping with 0xFF. - memcpy(addr_, buf_ones.data(), kPageSize); - - // Verify that the memcpy actually stuck in the page. - EXPECT_THAT(addr_, EqualsMemory(buf_ones)); - - // Verify that it didn't affect the second page which should be all zeros. - EXPECT_THAT(psec_map, EqualsMemory(buf_zero)); -} - -TEST_F(MMapTest, MapDevZeroSegfaultAfterUnmap) { - SetupGvisorDeathTest(); - - // This test will verify that we're able to map a page backed by /dev/zero - // as MAP_SHARED and after it's unmapped any access results in a SIGSEGV. - // This test is redundant but given the special nature of /dev/zero mappings - // it doesn't hurt. - const FileDescriptor dev_zero = - ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/zero", O_RDWR)); - - const auto rest = [&] { - // Test that we can create a RW SHARED mapping of /dev/zero. - TEST_PCHECK(Map(0, kPageSize, PROT_READ | PROT_WRITE, MAP_SHARED, - dev_zero.get(), - 0) != reinterpret_cast<uintptr_t>(MAP_FAILED)); - - // Confirm that accesses after the unmap result in a SIGSEGV. - // - // N.B. We depend on this process being single-threaded to ensure there - // can't be another mmap to map addr before the dereference below. - void* addr_saved = addr_; // Unmap resets addr_. - TEST_PCHECK(Unmap() == 0); - *reinterpret_cast<volatile int*>(addr_saved) = 0xFF; - }; - - EXPECT_THAT(InForkedProcess(rest), - IsPosixErrorOkAndHolds(W_EXITCODE(0, SIGSEGV))); -} - -TEST_F(MMapTest, MapDevZeroUnaligned) { - const FileDescriptor dev_zero = - ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/zero", O_RDWR)); - const size_t size = kPageSize + kPageSize / 2; - const std::string buf_zero(size, 0x00); - - ASSERT_THAT( - Map(0, size, PROT_READ | PROT_WRITE, MAP_SHARED, dev_zero.get(), 0), - SyscallSucceeds()); - EXPECT_THAT(addr_, EqualsMemory(buf_zero)); - ASSERT_THAT(Unmap(), SyscallSucceeds()); - - ASSERT_THAT( - Map(0, size, PROT_READ | PROT_WRITE, MAP_PRIVATE, dev_zero.get(), 0), - SyscallSucceeds()); - EXPECT_THAT(addr_, EqualsMemory(buf_zero)); -} - -// We can't map _some_ character devices. -TEST_F(MMapTest, MapCharDevice) { - const FileDescriptor cdevfd = - ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/random", 0, 0)); - EXPECT_THAT(Map(0, kPageSize, PROT_READ, MAP_PRIVATE, cdevfd.get(), 0), - SyscallFailsWithErrno(ENODEV)); -} - -// We can't map directories. -TEST_F(MMapTest, MapDirectory) { - const FileDescriptor dirfd = - ASSERT_NO_ERRNO_AND_VALUE(Open(GetAbsoluteTestTmpdir(), 0, 0)); - EXPECT_THAT(Map(0, kPageSize, PROT_READ, MAP_PRIVATE, dirfd.get(), 0), - SyscallFailsWithErrno(ENODEV)); -} - -// We can map *something* -TEST_F(MMapTest, MapAnything) { - EXPECT_THAT(Map(0, kPageSize, PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0), - SyscallSucceedsWithValue(Gt(0))); -} - -// Map length < PageSize allowed -TEST_F(MMapTest, SmallMap) { - EXPECT_THAT(Map(0, 128, PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0), - SyscallSucceeds()); -} - -// Hint address doesn't break anything. -// Note: there is no requirement we actually get the hint address -TEST_F(MMapTest, HintAddress) { - EXPECT_THAT( - Map(0x30000000, kPageSize, PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0), - SyscallSucceeds()); -} - -// MAP_FIXED gives us exactly the requested address -TEST_F(MMapTest, MapFixed) { - EXPECT_THAT(Map(0x30000000, kPageSize, PROT_NONE, - MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, -1, 0), - SyscallSucceedsWithValue(0x30000000)); -} - -// 64-bit addresses work too -#ifdef __x86_64__ -TEST_F(MMapTest, MapFixed64) { - EXPECT_THAT(Map(0x300000000000, kPageSize, PROT_NONE, - MAP_PRIVATE | MAP_ANONYMOUS | MAP_FIXED, -1, 0), - SyscallSucceedsWithValue(0x300000000000)); -} -#endif - -// MAP_STACK allowed. -// There isn't a good way to verify it did anything. -TEST_F(MMapTest, MapStack) { - EXPECT_THAT(Map(0, kPageSize, PROT_NONE, - MAP_PRIVATE | MAP_ANONYMOUS | MAP_STACK, -1, 0), - SyscallSucceeds()); -} - -// MAP_LOCKED allowed. -// There isn't a good way to verify it did anything. -TEST_F(MMapTest, MapLocked) { - EXPECT_THAT(Map(0, kPageSize, PROT_NONE, - MAP_PRIVATE | MAP_ANONYMOUS | MAP_LOCKED, -1, 0), - SyscallSucceeds()); -} - -// MAP_PRIVATE or MAP_SHARED must be passed -TEST_F(MMapTest, NotPrivateOrShared) { - EXPECT_THAT(Map(0, kPageSize, PROT_NONE, MAP_ANONYMOUS, -1, 0), - SyscallFailsWithErrno(EINVAL)); -} - -// Only one of MAP_PRIVATE or MAP_SHARED may be passed -TEST_F(MMapTest, PrivateAndShared) { - EXPECT_THAT(Map(0, kPageSize, PROT_NONE, - MAP_PRIVATE | MAP_SHARED | MAP_ANONYMOUS, -1, 0), - SyscallFailsWithErrno(EINVAL)); -} - -TEST_F(MMapTest, FixedAlignment) { - // Addr must be page aligned (MAP_FIXED) - EXPECT_THAT(Map(0x30000001, kPageSize, PROT_NONE, - MAP_PRIVATE | MAP_FIXED | MAP_ANONYMOUS, -1, 0), - SyscallFailsWithErrno(EINVAL)); -} - -// Non-MAP_FIXED address does not need to be page aligned -TEST_F(MMapTest, NonFixedAlignment) { - EXPECT_THAT( - Map(0x30000001, kPageSize, PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0), - SyscallSucceeds()); -} - -// Length = 0 results in EINVAL. -TEST_F(MMapTest, InvalidLength) { - EXPECT_THAT(Map(0, 0, PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0), - SyscallFailsWithErrno(EINVAL)); -} - -// Bad fd not allowed. -TEST_F(MMapTest, BadFd) { - EXPECT_THAT(Map(0, kPageSize, PROT_NONE, MAP_PRIVATE, 999, 0), - SyscallFailsWithErrno(EBADF)); -} - -// Mappings are writable. -TEST_F(MMapTest, ProtWrite) { - uint64_t addr; - constexpr uint8_t kFirstWord[] = {42, 42, 42, 42}; - - EXPECT_THAT(addr = Map(0, kPageSize, PROT_READ | PROT_WRITE, - MAP_PRIVATE | MAP_ANONYMOUS, -1, 0), - SyscallSucceeds()); - - // This shouldn't cause a SIGSEGV. - memset(reinterpret_cast<void*>(addr), 42, kPageSize); - - // The written data should actually be there. - EXPECT_EQ( - 0, memcmp(reinterpret_cast<void*>(addr), kFirstWord, sizeof(kFirstWord))); -} - -// "Write-only" mappings are writable *and* readable. -TEST_F(MMapTest, ProtWriteOnly) { - uint64_t addr; - constexpr uint8_t kFirstWord[] = {42, 42, 42, 42}; - - EXPECT_THAT( - addr = Map(0, kPageSize, PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0), - SyscallSucceeds()); - - // This shouldn't cause a SIGSEGV. - memset(reinterpret_cast<void*>(addr), 42, kPageSize); - - // The written data should actually be there. - EXPECT_EQ( - 0, memcmp(reinterpret_cast<void*>(addr), kFirstWord, sizeof(kFirstWord))); -} - -// "Write-only" mappings are readable. -// -// This is distinct from above to ensure the page is accessible even if the -// initial fault is a write fault. -TEST_F(MMapTest, ProtWriteOnlyReadable) { - uint64_t addr; - constexpr uint64_t kFirstWord = 0; - - EXPECT_THAT( - addr = Map(0, kPageSize, PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0), - SyscallSucceeds()); - - EXPECT_EQ(0, memcmp(reinterpret_cast<void*>(addr), &kFirstWord, - sizeof(kFirstWord))); -} - -// Mappings are writable after mprotect from PROT_NONE to PROT_READ|PROT_WRITE. -TEST_F(MMapTest, ProtectProtWrite) { - uint64_t addr; - constexpr uint8_t kFirstWord[] = {42, 42, 42, 42}; - - EXPECT_THAT( - addr = Map(0, kPageSize, PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0), - SyscallSucceeds()); - - ASSERT_THAT(Protect(addr, kPageSize, PROT_READ | PROT_WRITE), - SyscallSucceeds()); - - // This shouldn't cause a SIGSEGV. - memset(reinterpret_cast<void*>(addr), 42, kPageSize); - - // The written data should actually be there. - EXPECT_EQ( - 0, memcmp(reinterpret_cast<void*>(addr), kFirstWord, sizeof(kFirstWord))); -} - -// SIGSEGV raised when reading PROT_NONE memory -TEST_F(MMapTest, ProtNoneDeath) { - SetupGvisorDeathTest(); - - uintptr_t addr; - - ASSERT_THAT( - addr = Map(0, kPageSize, PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0), - SyscallSucceeds()); - - EXPECT_EXIT(*reinterpret_cast<volatile int*>(addr), - ::testing::KilledBySignal(SIGSEGV), ""); -} - -// SIGSEGV raised when writing PROT_READ only memory -TEST_F(MMapTest, ReadOnlyDeath) { - SetupGvisorDeathTest(); - - uintptr_t addr; - - ASSERT_THAT( - addr = Map(0, kPageSize, PROT_READ, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0), - SyscallSucceeds()); - - EXPECT_EXIT(*reinterpret_cast<volatile int*>(addr) = 42, - ::testing::KilledBySignal(SIGSEGV), ""); -} - -// Writable mapping mprotect'd to read-only should not be writable. -TEST_F(MMapTest, MprotectReadOnlyDeath) { - SetupGvisorDeathTest(); - - uintptr_t addr; - - ASSERT_THAT(addr = Map(0, kPageSize, PROT_READ | PROT_WRITE, - MAP_PRIVATE | MAP_ANONYMOUS, -1, 0), - SyscallSucceeds()); - - volatile int* val = reinterpret_cast<int*>(addr); - - // Copy to ensure page is mapped in. - *val = 42; - - ASSERT_THAT(Protect(addr, kPageSize, PROT_READ), SyscallSucceeds()); - - // Now it shouldn't be writable. - EXPECT_EXIT(*val = 0, ::testing::KilledBySignal(SIGSEGV), ""); -} - -// Verify that calling mprotect an address that's not page aligned fails. -TEST_F(MMapTest, MprotectNotPageAligned) { - uintptr_t addr; - - ASSERT_THAT(addr = Map(0, kPageSize, PROT_READ | PROT_WRITE, - MAP_PRIVATE | MAP_ANONYMOUS, -1, 0), - SyscallSucceeds()); - ASSERT_THAT(Protect(addr + 1, kPageSize - 1, PROT_READ), - SyscallFailsWithErrno(EINVAL)); -} - -// Verify that calling mprotect with an absurdly huge length fails. -TEST_F(MMapTest, MprotectHugeLength) { - uintptr_t addr; - - ASSERT_THAT(addr = Map(0, kPageSize, PROT_READ | PROT_WRITE, - MAP_PRIVATE | MAP_ANONYMOUS, -1, 0), - SyscallSucceeds()); - ASSERT_THAT(Protect(addr, static_cast<size_t>(-1), PROT_READ), - SyscallFailsWithErrno(ENOMEM)); -} - -#if defined(__x86_64__) || defined(__i386__) -// This code is equivalent in 32 and 64-bit mode -const uint8_t machine_code[] = { - 0xb8, 0x2a, 0x00, 0x00, 0x00, // movl $42, %eax - 0xc3, // retq -}; - -// PROT_EXEC allows code execution -TEST_F(MMapTest, ProtExec) { - uintptr_t addr; - uint32_t (*func)(void); - - EXPECT_THAT(addr = Map(0, kPageSize, PROT_EXEC | PROT_READ | PROT_WRITE, - MAP_PRIVATE | MAP_ANONYMOUS, -1, 0), - SyscallSucceeds()); - - memcpy(reinterpret_cast<void*>(addr), machine_code, sizeof(machine_code)); - - func = reinterpret_cast<uint32_t (*)(void)>(addr); - - EXPECT_EQ(42, func()); -} - -// No PROT_EXEC disallows code execution -TEST_F(MMapTest, NoProtExecDeath) { - SetupGvisorDeathTest(); - - uintptr_t addr; - uint32_t (*func)(void); - - EXPECT_THAT(addr = Map(0, kPageSize, PROT_READ | PROT_WRITE, - MAP_PRIVATE | MAP_ANONYMOUS, -1, 0), - SyscallSucceeds()); - - memcpy(reinterpret_cast<void*>(addr), machine_code, sizeof(machine_code)); - - func = reinterpret_cast<uint32_t (*)(void)>(addr); - - EXPECT_EXIT(func(), ::testing::KilledBySignal(SIGSEGV), ""); -} -#endif - -TEST_F(MMapTest, NoExceedLimitData) { - void* prevbrk; - void* target_brk; - struct rlimit setlim; - - prevbrk = sbrk(0); - ASSERT_NE(-1, reinterpret_cast<intptr_t>(prevbrk)); - target_brk = reinterpret_cast<char*>(prevbrk) + 1; - - setlim.rlim_cur = RLIM_INFINITY; - setlim.rlim_max = RLIM_INFINITY; - ASSERT_THAT(setrlimit(RLIMIT_DATA, &setlim), SyscallSucceeds()); - EXPECT_THAT(brk(target_brk), SyscallSucceedsWithValue(0)); -} - -TEST_F(MMapTest, ExceedLimitData) { - // To unit test this more precisely, we'd need access to the mm's start_brk - // and end_brk, which we don't have direct access to :/ - void* prevbrk; - void* target_brk; - struct rlimit setlim; - - prevbrk = sbrk(0); - ASSERT_NE(-1, reinterpret_cast<intptr_t>(prevbrk)); - target_brk = reinterpret_cast<char*>(prevbrk) + 8192; - - setlim.rlim_cur = 0; - setlim.rlim_max = RLIM_INFINITY; - // Set RLIMIT_DATA very low so any subsequent brk() calls fail. - // Reset RLIMIT_DATA during teardown step. - ASSERT_THAT(setrlimit(RLIMIT_DATA, &setlim), SyscallSucceeds()); - EXPECT_THAT(brk(target_brk), SyscallFailsWithErrno(ENOMEM)); - // Teardown step... - setlim.rlim_cur = RLIM_INFINITY; - ASSERT_THAT(setrlimit(RLIMIT_DATA, &setlim), SyscallSucceeds()); -} - -TEST_F(MMapTest, ExceedLimitDataPrlimit) { - // To unit test this more precisely, we'd need access to the mm's start_brk - // and end_brk, which we don't have direct access to :/ - void* prevbrk; - void* target_brk; - struct rlimit setlim; - - prevbrk = sbrk(0); - ASSERT_NE(-1, reinterpret_cast<intptr_t>(prevbrk)); - target_brk = reinterpret_cast<char*>(prevbrk) + 8192; - - setlim.rlim_cur = 0; - setlim.rlim_max = RLIM_INFINITY; - // Set RLIMIT_DATA very low so any subsequent brk() calls fail. - // Reset RLIMIT_DATA during teardown step. - ASSERT_THAT(prlimit(0, RLIMIT_DATA, &setlim, nullptr), SyscallSucceeds()); - EXPECT_THAT(brk(target_brk), SyscallFailsWithErrno(ENOMEM)); - // Teardown step... - setlim.rlim_cur = RLIM_INFINITY; - ASSERT_THAT(setrlimit(RLIMIT_DATA, &setlim), SyscallSucceeds()); -} - -TEST_F(MMapTest, ExceedLimitDataPrlimitPID) { - // To unit test this more precisely, we'd need access to the mm's start_brk - // and end_brk, which we don't have direct access to :/ - void* prevbrk; - void* target_brk; - struct rlimit setlim; - - prevbrk = sbrk(0); - ASSERT_NE(-1, reinterpret_cast<intptr_t>(prevbrk)); - target_brk = reinterpret_cast<char*>(prevbrk) + 8192; - - setlim.rlim_cur = 0; - setlim.rlim_max = RLIM_INFINITY; - // Set RLIMIT_DATA very low so any subsequent brk() calls fail. - // Reset RLIMIT_DATA during teardown step. - ASSERT_THAT(prlimit(syscall(__NR_gettid), RLIMIT_DATA, &setlim, nullptr), - SyscallSucceeds()); - EXPECT_THAT(brk(target_brk), SyscallFailsWithErrno(ENOMEM)); - // Teardown step... - setlim.rlim_cur = RLIM_INFINITY; - ASSERT_THAT(setrlimit(RLIMIT_DATA, &setlim), SyscallSucceeds()); -} - -TEST_F(MMapTest, NoExceedLimitAS) { - constexpr uint64_t kAllocBytes = 200 << 20; - // Add some headroom to the AS limit in case of e.g. unexpected stack - // expansion. - constexpr uint64_t kExtraASBytes = kAllocBytes + (20 << 20); - static_assert(kAllocBytes < kExtraASBytes, - "test depends on allocation not exceeding AS limit"); - - auto vss = ASSERT_NO_ERRNO_AND_VALUE(VirtualMemorySize()); - struct rlimit setlim; - setlim.rlim_cur = vss + kExtraASBytes; - setlim.rlim_max = RLIM_INFINITY; - ASSERT_THAT(setrlimit(RLIMIT_AS, &setlim), SyscallSucceeds()); - EXPECT_THAT( - Map(0, kAllocBytes, PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0), - SyscallSucceedsWithValue(Gt(0))); -} - -TEST_F(MMapTest, ExceedLimitAS) { - constexpr uint64_t kAllocBytes = 200 << 20; - // Add some headroom to the AS limit in case of e.g. unexpected stack - // expansion. - constexpr uint64_t kExtraASBytes = 20 << 20; - static_assert(kAllocBytes > kExtraASBytes, - "test depends on allocation exceeding AS limit"); - - auto vss = ASSERT_NO_ERRNO_AND_VALUE(VirtualMemorySize()); - struct rlimit setlim; - setlim.rlim_cur = vss + kExtraASBytes; - setlim.rlim_max = RLIM_INFINITY; - ASSERT_THAT(setrlimit(RLIMIT_AS, &setlim), SyscallSucceeds()); - EXPECT_THAT( - Map(0, kAllocBytes, PROT_NONE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0), - SyscallFailsWithErrno(ENOMEM)); -} - -// Tests that setting an anonymous mmap to PROT_NONE doesn't free the memory. -TEST_F(MMapTest, SettingProtNoneDoesntFreeMemory) { - uintptr_t addr; - constexpr uint8_t kFirstWord[] = {42, 42, 42, 42}; - - EXPECT_THAT(addr = Map(0, kPageSize, PROT_READ | PROT_WRITE, - MAP_PRIVATE | MAP_ANONYMOUS, -1, 0), - SyscallSucceedsWithValue(Gt(0))); - - memset(reinterpret_cast<void*>(addr), 42, kPageSize); - - ASSERT_THAT(Protect(addr, kPageSize, PROT_NONE), SyscallSucceeds()); - ASSERT_THAT(Protect(addr, kPageSize, PROT_READ | PROT_WRITE), - SyscallSucceeds()); - - // The written data should still be there. - EXPECT_EQ( - 0, memcmp(reinterpret_cast<void*>(addr), kFirstWord, sizeof(kFirstWord))); -} - -constexpr char kFileContents[] = "Hello World!"; - -class MMapFileTest : public MMapTest { - protected: - FileDescriptor fd_; - std::string filename_; - - // Open a file for read/write - void SetUp() override { - MMapTest::SetUp(); - - filename_ = NewTempAbsPath(); - fd_ = ASSERT_NO_ERRNO_AND_VALUE(Open(filename_, O_CREAT | O_RDWR, 0644)); - - // Extend file so it can be written once mapped. Deliberately make the file - // only half a page in size, so we can test what happens when we access the - // second half. - // Use ftruncate(2) once the sentry supports it. - char zero = 0; - size_t count = 0; - do { - const DisableSave ds; // saving 2048 times is slow and useless. - Write(&zero, 1), SyscallSucceedsWithValue(1); - } while (++count < (kPageSize / 2)); - ASSERT_THAT(lseek(fd_.get(), 0, SEEK_SET), SyscallSucceedsWithValue(0)); - } - - // Close and delete file - void TearDown() override { - MMapTest::TearDown(); - fd_.reset(); // Make sure the files is closed before we unlink it. - ASSERT_THAT(unlink(filename_.c_str()), SyscallSucceeds()); - } - - ssize_t Read(char* buf, size_t count) { - ssize_t len = 0; - do { - ssize_t ret = read(fd_.get(), buf, count); - if (ret < 0) { - return ret; - } else if (ret == 0) { - return len; - } - - len += ret; - buf += ret; - } while (len < static_cast<ssize_t>(count)); - - return len; - } - - ssize_t Write(const char* buf, size_t count) { - ssize_t len = 0; - do { - ssize_t ret = write(fd_.get(), buf, count); - if (ret < 0) { - return ret; - } else if (ret == 0) { - return len; - } - - len += ret; - buf += ret; - } while (len < static_cast<ssize_t>(count)); - - return len; - } -}; - -class MMapFileParamTest - : public MMapFileTest, - public ::testing::WithParamInterface<std::tuple<int, int>> { - protected: - int prot() const { return std::get<0>(GetParam()); } - - int flags() const { return std::get<1>(GetParam()); } -}; - -// MAP_POPULATE allowed. -// There isn't a good way to verify it actually did anything. -TEST_P(MMapFileParamTest, MapPopulate) { - ASSERT_THAT(Map(0, kPageSize, prot(), flags() | MAP_POPULATE, fd_.get(), 0), - SyscallSucceeds()); -} - -// MAP_POPULATE on a short file. -TEST_P(MMapFileParamTest, MapPopulateShort) { - ASSERT_THAT( - Map(0, 2 * kPageSize, prot(), flags() | MAP_POPULATE, fd_.get(), 0), - SyscallSucceeds()); -} - -// Read contents from mapped file. -TEST_F(MMapFileTest, Read) { - size_t len = strlen(kFileContents); - ASSERT_EQ(len, Write(kFileContents, len)); - - uintptr_t addr; - ASSERT_THAT(addr = Map(0, kPageSize, PROT_READ, MAP_PRIVATE, fd_.get(), 0), - SyscallSucceeds()); - - EXPECT_THAT(reinterpret_cast<char*>(addr), - EqualsMemory(std::string(kFileContents))); -} - -// Map at an offset. -TEST_F(MMapFileTest, MapOffset) { - ASSERT_THAT(lseek(fd_.get(), kPageSize, SEEK_SET), SyscallSucceeds()); - - size_t len = strlen(kFileContents); - ASSERT_EQ(len, Write(kFileContents, len)); - - uintptr_t addr; - ASSERT_THAT( - addr = Map(0, kPageSize, PROT_READ, MAP_PRIVATE, fd_.get(), kPageSize), - SyscallSucceeds()); - - EXPECT_THAT(reinterpret_cast<char*>(addr), - EqualsMemory(std::string(kFileContents))); -} - -TEST_F(MMapFileTest, MapOffsetBeyondEnd) { - SetupGvisorDeathTest(); - - uintptr_t addr; - ASSERT_THAT(addr = Map(0, kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE, - fd_.get(), 10 * kPageSize), - SyscallSucceeds()); - - // Touching the memory causes SIGBUS. - size_t len = strlen(kFileContents); - EXPECT_EXIT(std::copy(kFileContents, kFileContents + len, - reinterpret_cast<volatile char*>(addr)), - ::testing::KilledBySignal(SIGBUS), ""); -} - -// Verify mmap fails when sum of length and offset overflows. -TEST_F(MMapFileTest, MapLengthPlusOffsetOverflows) { - const size_t length = static_cast<size_t>(-kPageSize); - const off_t offset = kPageSize; - ASSERT_THAT(Map(0, length, PROT_READ, MAP_PRIVATE, fd_.get(), offset), - SyscallFailsWithErrno(ENOMEM)); -} - -// MAP_PRIVATE PROT_WRITE is allowed on read-only FDs. -TEST_F(MMapFileTest, WritePrivateOnReadOnlyFd) { - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(filename_, O_RDONLY)); - - uintptr_t addr; - EXPECT_THAT(addr = Map(0, kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE, - fd.get(), 0), - SyscallSucceeds()); - - // Touch the page to ensure the kernel didn't lie about writability. - size_t len = strlen(kFileContents); - std::copy(kFileContents, kFileContents + len, - reinterpret_cast<volatile char*>(addr)); -} - -// MAP_SHARED PROT_WRITE not allowed on read-only FDs. -TEST_F(MMapFileTest, WriteSharedOnReadOnlyFd) { - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(filename_, O_RDONLY)); - - uintptr_t addr; - EXPECT_THAT( - addr = Map(0, kPageSize, PROT_READ | PROT_WRITE, MAP_SHARED, fd.get(), 0), - SyscallFailsWithErrno(EACCES)); -} - -// The FD must be readable. -TEST_P(MMapFileParamTest, WriteOnlyFd) { - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(filename_, O_WRONLY)); - - uintptr_t addr; - EXPECT_THAT(addr = Map(0, kPageSize, prot(), flags(), fd.get(), 0), - SyscallFailsWithErrno(EACCES)); -} - -// Overwriting the contents of a file mapped MAP_SHARED PROT_READ -// should cause the new data to be reflected in the mapping. -TEST_F(MMapFileTest, ReadSharedConsistentWithOverwrite) { - // Start from scratch. - EXPECT_THAT(ftruncate(fd_.get(), 0), SyscallSucceeds()); - - // Expand the file to two pages and dirty them. - std::string bufA(kPageSize, 'a'); - ASSERT_THAT(Write(bufA.c_str(), bufA.size()), - SyscallSucceedsWithValue(bufA.size())); - std::string bufB(kPageSize, 'b'); - ASSERT_THAT(Write(bufB.c_str(), bufB.size()), - SyscallSucceedsWithValue(bufB.size())); - - // Map the page. - uintptr_t addr; - ASSERT_THAT(addr = Map(0, 2 * kPageSize, PROT_READ, MAP_SHARED, fd_.get(), 0), - SyscallSucceeds()); - - // Check that the mapping contains the right file data. - EXPECT_EQ(0, memcmp(reinterpret_cast<void*>(addr), bufA.c_str(), kPageSize)); - EXPECT_EQ(0, memcmp(reinterpret_cast<void*>(addr + kPageSize), bufB.c_str(), - kPageSize)); - - // Start at the beginning of the file. - ASSERT_THAT(lseek(fd_.get(), 0, SEEK_SET), SyscallSucceedsWithValue(0)); - - // Swap the write pattern. - ASSERT_THAT(Write(bufB.c_str(), bufB.size()), - SyscallSucceedsWithValue(bufB.size())); - ASSERT_THAT(Write(bufA.c_str(), bufA.size()), - SyscallSucceedsWithValue(bufA.size())); - - // Check that the mapping got updated. - EXPECT_EQ(0, memcmp(reinterpret_cast<void*>(addr), bufB.c_str(), kPageSize)); - EXPECT_EQ(0, memcmp(reinterpret_cast<void*>(addr + kPageSize), bufA.c_str(), - kPageSize)); -} - -// Partially overwriting a file mapped MAP_SHARED PROT_READ should be reflected -// in the mapping. -TEST_F(MMapFileTest, ReadSharedConsistentWithPartialOverwrite) { - // Start from scratch. - EXPECT_THAT(ftruncate(fd_.get(), 0), SyscallSucceeds()); - - // Expand the file to two pages and dirty them. - std::string bufA(kPageSize, 'a'); - ASSERT_THAT(Write(bufA.c_str(), bufA.size()), - SyscallSucceedsWithValue(bufA.size())); - std::string bufB(kPageSize, 'b'); - ASSERT_THAT(Write(bufB.c_str(), bufB.size()), - SyscallSucceedsWithValue(bufB.size())); - - // Map the page. - uintptr_t addr; - ASSERT_THAT(addr = Map(0, 2 * kPageSize, PROT_READ, MAP_SHARED, fd_.get(), 0), - SyscallSucceeds()); - - // Check that the mapping contains the right file data. - EXPECT_EQ(0, memcmp(reinterpret_cast<void*>(addr), bufA.c_str(), kPageSize)); - EXPECT_EQ(0, memcmp(reinterpret_cast<void*>(addr + kPageSize), bufB.c_str(), - kPageSize)); - - // Start at the beginning of the file. - ASSERT_THAT(lseek(fd_.get(), 0, SEEK_SET), SyscallSucceedsWithValue(0)); - - // Do a partial overwrite, spanning both pages. - std::string bufC(kPageSize + (kPageSize / 2), 'c'); - ASSERT_THAT(Write(bufC.c_str(), bufC.size()), - SyscallSucceedsWithValue(bufC.size())); - - // Check that the mapping got updated. - EXPECT_EQ(0, memcmp(reinterpret_cast<void*>(addr), bufC.c_str(), - kPageSize + (kPageSize / 2))); - EXPECT_EQ(0, - memcmp(reinterpret_cast<void*>(addr + kPageSize + (kPageSize / 2)), - bufB.c_str(), kPageSize / 2)); -} - -// Overwriting a file mapped MAP_SHARED PROT_READ should be reflected in the -// mapping and the file. -TEST_F(MMapFileTest, ReadSharedConsistentWithWriteAndFile) { - // Start from scratch. - EXPECT_THAT(ftruncate(fd_.get(), 0), SyscallSucceeds()); - - // Expand the file to two full pages and dirty it. - std::string bufA(2 * kPageSize, 'a'); - ASSERT_THAT(Write(bufA.c_str(), bufA.size()), - SyscallSucceedsWithValue(bufA.size())); - - // Map only the first page. - uintptr_t addr; - ASSERT_THAT(addr = Map(0, kPageSize, PROT_READ, MAP_SHARED, fd_.get(), 0), - SyscallSucceeds()); - - // Prepare to overwrite the file contents. - ASSERT_THAT(lseek(fd_.get(), 0, SEEK_SET), SyscallSucceedsWithValue(0)); - - // Overwrite everything, beyond the mapped portion. - std::string bufB(2 * kPageSize, 'b'); - ASSERT_THAT(Write(bufB.c_str(), bufB.size()), - SyscallSucceedsWithValue(bufB.size())); - - // What the mapped portion should now look like. - std::string bufMapped(kPageSize, 'b'); - - // Expect that the mapped portion is consistent. - EXPECT_EQ( - 0, memcmp(reinterpret_cast<void*>(addr), bufMapped.c_str(), kPageSize)); - - // Prepare to read the entire file contents. - ASSERT_THAT(lseek(fd_.get(), 0, SEEK_SET), SyscallSucceedsWithValue(0)); - - // Expect that the file was fully updated. - std::vector<char> bufFile(2 * kPageSize); - ASSERT_THAT(Read(bufFile.data(), bufFile.size()), - SyscallSucceedsWithValue(bufFile.size())); - // Cast to void* to avoid EXPECT_THAT assuming bufFile.data() is a - // NUL-terminated C std::string. EXPECT_THAT will try to print a char* as a C - // std::string, possibly overruning the buffer. - EXPECT_THAT(reinterpret_cast<void*>(bufFile.data()), EqualsMemory(bufB)); -} - -// Write data to mapped file. -TEST_F(MMapFileTest, WriteShared) { - uintptr_t addr; - ASSERT_THAT(addr = Map(0, kPageSize, PROT_READ | PROT_WRITE, MAP_SHARED, - fd_.get(), 0), - SyscallSucceeds()); - - size_t len = strlen(kFileContents); - memcpy(reinterpret_cast<void*>(addr), kFileContents, len); - - // The file may not actually be updated until munmap is called. - ASSERT_THAT(Unmap(), SyscallSucceeds()); - - std::vector<char> buf(len); - ASSERT_THAT(Read(buf.data(), buf.size()), - SyscallSucceedsWithValue(buf.size())); - // Cast to void* to avoid EXPECT_THAT assuming buf.data() is a - // NUL-terminated C string. EXPECT_THAT will try to print a char* as a C - // string, possibly overruning the buffer. - EXPECT_THAT(reinterpret_cast<void*>(buf.data()), - EqualsMemory(std::string(kFileContents))); -} - -// Write data to portion of mapped page beyond the end of the file. -// These writes are not reflected in the file. -TEST_F(MMapFileTest, WriteSharedBeyondEnd) { - // The file is only half of a page. We map an entire page. Writes to the - // end of the mapping must not be reflected in the file. - uintptr_t addr; - ASSERT_THAT(addr = Map(0, kPageSize, PROT_READ | PROT_WRITE, MAP_SHARED, - fd_.get(), 0), - SyscallSucceeds()); - - // First half; this is reflected in the file. - std::string first(kPageSize / 2, 'A'); - memcpy(reinterpret_cast<void*>(addr), first.c_str(), first.size()); - - // Second half; this is not reflected in the file. - std::string second(kPageSize / 2, 'B'); - memcpy(reinterpret_cast<void*>(addr + kPageSize / 2), second.c_str(), - second.size()); - - // The file may not actually be updated until munmap is called. - ASSERT_THAT(Unmap(), SyscallSucceeds()); - - // Big enough to fit the entire page, if the writes are mistakenly written to - // the file. - std::vector<char> buf(kPageSize); - - // Only the first half is in the file. - ASSERT_THAT(Read(buf.data(), buf.size()), - SyscallSucceedsWithValue(first.size())); - // Cast to void* to avoid EXPECT_THAT assuming buf.data() is a - // NUL-terminated C string. EXPECT_THAT will try to print a char* as a C - // NUL-terminated C std::string. EXPECT_THAT will try to print a char* as a C - // std::string, possibly overruning the buffer. - EXPECT_THAT(reinterpret_cast<void*>(buf.data()), EqualsMemory(first)); -} - -// The portion of a mapped page that becomes part of the file after a truncate -// is reflected in the file. -TEST_F(MMapFileTest, WriteSharedTruncateUp) { - // The file is only half of a page. We map an entire page. Writes to the - // end of the mapping must not be reflected in the file. - uintptr_t addr; - ASSERT_THAT(addr = Map(0, kPageSize, PROT_READ | PROT_WRITE, MAP_SHARED, - fd_.get(), 0), - SyscallSucceeds()); - - // First half; this is reflected in the file. - std::string first(kPageSize / 2, 'A'); - memcpy(reinterpret_cast<void*>(addr), first.c_str(), first.size()); - - // Second half; this is not reflected in the file now (see - // WriteSharedBeyondEnd), but will be after the truncate. - std::string second(kPageSize / 2, 'B'); - memcpy(reinterpret_cast<void*>(addr + kPageSize / 2), second.c_str(), - second.size()); - - // Extend the file to a full page. The second half of the page will be - // reflected in the file. - EXPECT_THAT(ftruncate(fd_.get(), kPageSize), SyscallSucceeds()); - - // The file may not actually be updated until munmap is called. - ASSERT_THAT(Unmap(), SyscallSucceeds()); - - // The whole page is in the file. - std::vector<char> buf(kPageSize); - ASSERT_THAT(Read(buf.data(), buf.size()), - SyscallSucceedsWithValue(buf.size())); - // Cast to void* to avoid EXPECT_THAT assuming buf.data() is a - // NUL-terminated C string. EXPECT_THAT will try to print a char* as a C - // string, possibly overruning the buffer. - EXPECT_THAT(reinterpret_cast<void*>(buf.data()), EqualsMemory(first)); - EXPECT_THAT(reinterpret_cast<void*>(buf.data() + kPageSize / 2), - EqualsMemory(second)); -} - -TEST_F(MMapFileTest, ReadSharedTruncateDownThenUp) { - // Start from scratch. - EXPECT_THAT(ftruncate(fd_.get(), 0), SyscallSucceeds()); - - // Expand the file to a full page and dirty it. - std::string buf(kPageSize, 'a'); - ASSERT_THAT(Write(buf.c_str(), buf.size()), - SyscallSucceedsWithValue(buf.size())); - - // Map the page. - uintptr_t addr; - ASSERT_THAT(addr = Map(0, kPageSize, PROT_READ, MAP_SHARED, fd_.get(), 0), - SyscallSucceeds()); - - // Check that the memory contains the file data. - EXPECT_EQ(0, memcmp(reinterpret_cast<void*>(addr), buf.c_str(), kPageSize)); - - // Truncate down, then up. - EXPECT_THAT(ftruncate(fd_.get(), 0), SyscallSucceeds()); - EXPECT_THAT(ftruncate(fd_.get(), kPageSize), SyscallSucceeds()); - - // Check that the memory was zeroed. - std::string zeroed(kPageSize, '\0'); - EXPECT_EQ(0, - memcmp(reinterpret_cast<void*>(addr), zeroed.c_str(), kPageSize)); - - // The file may not actually be updated until msync is called. - ASSERT_THAT(Msync(), SyscallSucceeds()); - - // Prepare to read the entire file contents. - ASSERT_THAT(lseek(fd_.get(), 0, SEEK_SET), SyscallSucceedsWithValue(0)); - - // Expect that the file is fully updated. - std::vector<char> bufFile(kPageSize); - ASSERT_THAT(Read(bufFile.data(), bufFile.size()), - SyscallSucceedsWithValue(bufFile.size())); - EXPECT_EQ(0, memcmp(bufFile.data(), zeroed.c_str(), kPageSize)); -} - -TEST_F(MMapFileTest, WriteSharedTruncateDownThenUp) { - // The file is only half of a page. We map an entire page. Writes to the - // end of the mapping must not be reflected in the file. - uintptr_t addr; - ASSERT_THAT(addr = Map(0, kPageSize, PROT_READ | PROT_WRITE, MAP_SHARED, - fd_.get(), 0), - SyscallSucceeds()); - - // First half; this will be deleted by truncate(0). - std::string first(kPageSize / 2, 'A'); - memcpy(reinterpret_cast<void*>(addr), first.c_str(), first.size()); - - // Truncate down, then up. - EXPECT_THAT(ftruncate(fd_.get(), 0), SyscallSucceeds()); - EXPECT_THAT(ftruncate(fd_.get(), kPageSize), SyscallSucceeds()); - - // The whole page is zeroed in memory. - std::string zeroed(kPageSize, '\0'); - EXPECT_EQ(0, - memcmp(reinterpret_cast<void*>(addr), zeroed.c_str(), kPageSize)); - - // The file may not actually be updated until munmap is called. - ASSERT_THAT(Unmap(), SyscallSucceeds()); - - // The whole file is also zeroed. - std::vector<char> buf(kPageSize); - ASSERT_THAT(Read(buf.data(), buf.size()), - SyscallSucceedsWithValue(buf.size())); - // Cast to void* to avoid EXPECT_THAT assuming buf.data() is a - // NUL-terminated C string. EXPECT_THAT will try to print a char* as a C - // string, possibly overruning the buffer. - EXPECT_THAT(reinterpret_cast<void*>(buf.data()), EqualsMemory(zeroed)); -} - -TEST_F(MMapFileTest, ReadSharedTruncateSIGBUS) { - SetupGvisorDeathTest(); - - // Start from scratch. - EXPECT_THAT(ftruncate(fd_.get(), 0), SyscallSucceeds()); - - // Expand the file to a full page and dirty it. - std::string buf(kPageSize, 'a'); - ASSERT_THAT(Write(buf.c_str(), buf.size()), - SyscallSucceedsWithValue(buf.size())); - - // Map the page. - uintptr_t addr; - ASSERT_THAT(addr = Map(0, kPageSize, PROT_READ, MAP_SHARED, fd_.get(), 0), - SyscallSucceeds()); - - // Check that the mapping contains the file data. - EXPECT_EQ(0, memcmp(reinterpret_cast<void*>(addr), buf.c_str(), kPageSize)); - - // Truncate down. - EXPECT_THAT(ftruncate(fd_.get(), 0), SyscallSucceeds()); - - // Accessing the truncated region should cause a SIGBUS. - std::vector<char> in(kPageSize); - EXPECT_EXIT( - std::copy(reinterpret_cast<volatile char*>(addr), - reinterpret_cast<volatile char*>(addr) + kPageSize, in.data()), - ::testing::KilledBySignal(SIGBUS), ""); -} - -TEST_F(MMapFileTest, WriteSharedTruncateSIGBUS) { - SetupGvisorDeathTest(); - - uintptr_t addr; - ASSERT_THAT(addr = Map(0, kPageSize, PROT_READ | PROT_WRITE, MAP_SHARED, - fd_.get(), 0), - SyscallSucceeds()); - - // Touch the memory to be sure it really is mapped. - size_t len = strlen(kFileContents); - memcpy(reinterpret_cast<void*>(addr), kFileContents, len); - - // Truncate down. - EXPECT_THAT(ftruncate(fd_.get(), 0), SyscallSucceeds()); - - // Accessing the truncated file should cause a SIGBUS. - EXPECT_EXIT(std::copy(kFileContents, kFileContents + len, - reinterpret_cast<volatile char*>(addr)), - ::testing::KilledBySignal(SIGBUS), ""); -} - -TEST_F(MMapFileTest, ReadSharedTruncatePartialPage) { - // Start from scratch. - EXPECT_THAT(ftruncate(fd_.get(), 0), SyscallSucceeds()); - - // Dirty the file. - std::string buf(kPageSize, 'a'); - ASSERT_THAT(Write(buf.c_str(), buf.size()), - SyscallSucceedsWithValue(buf.size())); - - // Map a page. - uintptr_t addr; - ASSERT_THAT(addr = Map(0, kPageSize, PROT_READ, MAP_SHARED, fd_.get(), 0), - SyscallSucceeds()); - - // Truncate to half of the page. - EXPECT_THAT(ftruncate(fd_.get(), kPageSize / 2), SyscallSucceeds()); - - // First half of the page untouched. - EXPECT_EQ(0, - memcmp(reinterpret_cast<void*>(addr), buf.data(), kPageSize / 2)); - - // Second half is zeroed. - std::string zeroed(kPageSize / 2, '\0'); - EXPECT_EQ(0, memcmp(reinterpret_cast<void*>(addr + kPageSize / 2), - zeroed.c_str(), kPageSize / 2)); -} - -// Page can still be accessed and contents are intact after truncating a partial -// page. -TEST_F(MMapFileTest, WriteSharedTruncatePartialPage) { - // Expand the file to a full page. - EXPECT_THAT(ftruncate(fd_.get(), kPageSize), SyscallSucceeds()); - - uintptr_t addr; - ASSERT_THAT(addr = Map(0, kPageSize, PROT_READ | PROT_WRITE, MAP_SHARED, - fd_.get(), 0), - SyscallSucceeds()); - - // Fill the entire page. - std::string contents(kPageSize, 'A'); - memcpy(reinterpret_cast<void*>(addr), contents.c_str(), contents.size()); - - // Truncate half of the page. - EXPECT_THAT(ftruncate(fd_.get(), kPageSize / 2), SyscallSucceeds()); - - // First half of the page untouched. - EXPECT_EQ(0, memcmp(reinterpret_cast<void*>(addr), contents.c_str(), - kPageSize / 2)); - - // Second half zeroed. - std::string zeroed(kPageSize / 2, '\0'); - EXPECT_EQ(0, memcmp(reinterpret_cast<void*>(addr + kPageSize / 2), - zeroed.c_str(), kPageSize / 2)); -} - -// MAP_PRIVATE writes are not carried through to the underlying file. -TEST_F(MMapFileTest, WritePrivate) { - uintptr_t addr; - ASSERT_THAT(addr = Map(0, kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE, - fd_.get(), 0), - SyscallSucceeds()); - - size_t len = strlen(kFileContents); - memcpy(reinterpret_cast<void*>(addr), kFileContents, len); - - // The file should not be updated, but if it mistakenly is, it may not be - // until after munmap is called. - ASSERT_THAT(Unmap(), SyscallSucceeds()); - - std::vector<char> buf(len); - ASSERT_THAT(Read(buf.data(), buf.size()), - SyscallSucceedsWithValue(buf.size())); - // Cast to void* to avoid EXPECT_THAT assuming buf.data() is a - // NUL-terminated C string. EXPECT_THAT will try to print a char* as a C - // string, possibly overruning the buffer. - EXPECT_THAT(reinterpret_cast<void*>(buf.data()), - EqualsMemory(std::string(len, '\0'))); -} - -// SIGBUS raised when reading or writing past end of a mapped file. -TEST_P(MMapFileParamTest, SigBusDeath) { - SetupGvisorDeathTest(); - - uintptr_t addr; - ASSERT_THAT(addr = Map(0, 2 * kPageSize, prot(), flags(), fd_.get(), 0), - SyscallSucceeds()); - - auto* start = reinterpret_cast<volatile char*>(addr + kPageSize); - - // MMapFileTest makes a file kPageSize/2 long. The entire first page should be - // accessible, but anything beyond it should not. - if (prot() & PROT_WRITE) { - // Write beyond first page. - size_t len = strlen(kFileContents); - EXPECT_EXIT(std::copy(kFileContents, kFileContents + len, start), - ::testing::KilledBySignal(SIGBUS), ""); - } else { - // Read beyond first page. - std::vector<char> in(kPageSize); - EXPECT_EXIT(std::copy(start, start + kPageSize, in.data()), - ::testing::KilledBySignal(SIGBUS), ""); - } -} - -// Tests that SIGBUS is not raised when reading or writing to a file-mapped -// page before EOF, even if part of the mapping extends beyond EOF. -// -// See b/27877699. -TEST_P(MMapFileParamTest, NoSigBusOnPagesBeforeEOF) { - uintptr_t addr; - ASSERT_THAT(addr = Map(0, 2 * kPageSize, prot(), flags(), fd_.get(), 0), - SyscallSucceeds()); - - // The test passes if this survives. - auto* start = reinterpret_cast<volatile char*>(addr + (kPageSize / 2) + 1); - size_t len = strlen(kFileContents); - if (prot() & PROT_WRITE) { - std::copy(kFileContents, kFileContents + len, start); - } else { - std::vector<char> in(len); - std::copy(start, start + len, in.data()); - } -} - -// Tests that SIGBUS is not raised when reading or writing from a file-mapped -// page containing EOF, *after* the EOF. -TEST_P(MMapFileParamTest, NoSigBusOnPageContainingEOF) { - uintptr_t addr; - ASSERT_THAT(addr = Map(0, 2 * kPageSize, prot(), flags(), fd_.get(), 0), - SyscallSucceeds()); - - // The test passes if this survives. (Technically addr+kPageSize/2 is already - // beyond EOF, but +1 to check for fencepost errors.) - auto* start = reinterpret_cast<volatile char*>(addr + (kPageSize / 2) + 1); - size_t len = strlen(kFileContents); - if (prot() & PROT_WRITE) { - std::copy(kFileContents, kFileContents + len, start); - } else { - std::vector<char> in(len); - std::copy(start, start + len, in.data()); - } -} - -// Tests that reading from writable shared file-mapped pages succeeds. -// -// On most platforms this is trivial, but when the file is mapped via the sentry -// page cache (which does not yet support writing to shared mappings), a bug -// caused reads to fail unnecessarily on such mappings. See b/28913513. -TEST_F(MMapFileTest, ReadingWritableSharedFilePageSucceeds) { - uintptr_t addr; - size_t len = strlen(kFileContents); - - ASSERT_THAT(addr = Map(0, 2 * kPageSize, PROT_READ | PROT_WRITE, MAP_SHARED, - fd_.get(), 0), - SyscallSucceeds()); - - std::vector<char> buf(kPageSize); - // The test passes if this survives. - std::copy(reinterpret_cast<volatile char*>(addr), - reinterpret_cast<volatile char*>(addr) + len, buf.data()); -} - -// Tests that EFAULT is returned when invoking a syscall that requires the OS to -// read past end of file (resulting in a fault in sentry context in the gVisor -// case). See b/28913513. -TEST_F(MMapFileTest, InternalSigBus) { - uintptr_t addr; - ASSERT_THAT(addr = Map(0, 2 * kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE, - fd_.get(), 0), - SyscallSucceeds()); - - // This depends on the fact that gVisor implements pipes internally. - int pipefd[2]; - ASSERT_THAT(pipe(pipefd), SyscallSucceeds()); - EXPECT_THAT( - write(pipefd[1], reinterpret_cast<void*>(addr + kPageSize), kPageSize), - SyscallFailsWithErrno(EFAULT)); - - EXPECT_THAT(close(pipefd[0]), SyscallSucceeds()); - EXPECT_THAT(close(pipefd[1]), SyscallSucceeds()); -} - -// Like InternalSigBus, but test the WriteZerosAt path by reading from -// /dev/zero to a shared mapping (so that the SIGBUS isn't caught during -// copy-on-write breaking). -TEST_F(MMapFileTest, InternalSigBusZeroing) { - uintptr_t addr; - ASSERT_THAT(addr = Map(0, 2 * kPageSize, PROT_READ | PROT_WRITE, MAP_SHARED, - fd_.get(), 0), - SyscallSucceeds()); - - const FileDescriptor dev_zero = - ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/zero", O_RDONLY)); - EXPECT_THAT(read(dev_zero.get(), reinterpret_cast<void*>(addr + kPageSize), - kPageSize), - SyscallFailsWithErrno(EFAULT)); -} - -// Checks that mmaps with a length of uint64_t(-PAGE_SIZE + 1) or greater do not -// induce a sentry panic (due to "rounding up" to 0). -TEST_F(MMapTest, HugeLength) { - EXPECT_THAT(Map(0, static_cast<uint64_t>(-kPageSize + 1), PROT_NONE, - MAP_PRIVATE | MAP_ANONYMOUS, -1, 0), - SyscallFailsWithErrno(ENOMEM)); -} - -// Tests for a specific gVisor MM caching bug. -TEST_F(MMapTest, AccessCOWInvalidatesCachedSegments) { - auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - auto fd = ASSERT_NO_ERRNO_AND_VALUE(Open(f.path(), O_RDWR)); - auto zero_fd = ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/zero", O_RDONLY)); - - // Get a two-page private mapping and fill it with 1s. - uintptr_t addr; - ASSERT_THAT(addr = Map(0, 2 * kPageSize, PROT_READ | PROT_WRITE, - MAP_PRIVATE | MAP_ANONYMOUS, -1, 0), - SyscallSucceeds()); - memset(addr_, 1, 2 * kPageSize); - MaybeSave(); - - // Fork to make the mapping copy-on-write. - pid_t const pid = fork(); - if (pid == 0) { - // The child process waits for the parent to SIGKILL it. - while (true) { - pause(); - } - } - ASSERT_THAT(pid, SyscallSucceeds()); - auto cleanup_child = Cleanup([&] { - EXPECT_THAT(kill(pid, SIGKILL), SyscallSucceeds()); - int status; - EXPECT_THAT(waitpid(pid, &status, 0), SyscallSucceedsWithValue(pid)); - }); - - // Induce a read-only Access of the first page of the mapping, which will not - // cause a copy. The usermem.Segment should be cached. - ASSERT_THAT(PwriteFd(fd.get(), addr_, kPageSize, 0), - SyscallSucceedsWithValue(kPageSize)); - - // Induce a writable Access of both pages of the mapping. This should - // invalidate the cached Segment. - ASSERT_THAT(PreadFd(zero_fd.get(), addr_, 2 * kPageSize, 0), - SyscallSucceedsWithValue(2 * kPageSize)); - - // Induce a read-only Access of the first page of the mapping again. It should - // read the 0s that were stored in the mapping by the read from /dev/zero. If - // the read failed to invalidate the cached Segment, it will instead read the - // 1s in the stale page. - ASSERT_THAT(PwriteFd(fd.get(), addr_, kPageSize, 0), - SyscallSucceedsWithValue(kPageSize)); - std::vector<char> buf(kPageSize); - ASSERT_THAT(PreadFd(fd.get(), buf.data(), kPageSize, 0), - SyscallSucceedsWithValue(kPageSize)); - for (size_t i = 0; i < kPageSize; i++) { - ASSERT_EQ(0, buf[i]) << "at offset " << i; - } -} - -TEST_F(MMapTest, NoReserve) { - const size_t kSize = 10 * 1 << 20; // 10M - uintptr_t addr; - ASSERT_THAT(addr = Map(0, kSize, PROT_READ | PROT_WRITE, - MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE, -1, 0), - SyscallSucceeds()); - EXPECT_GT(addr, 0); - - // Check that every page can be read/written. Technically, writing to memory - // could SIGSEGV in case there is no more memory available. In gVisor it - // would never happen though because NORESERVE is ignored. In Linux, it's - // possible to fail, but allocation is small enough that it's highly likely - // to succeed. - for (size_t j = 0; j < kSize; j += kPageSize) { - EXPECT_EQ(0, reinterpret_cast<char*>(addr)[j]); - reinterpret_cast<char*>(addr)[j] = j; - } -} - -// Map more than the gVisor page-cache map unit (64k) and ensure that -// it is consistent with reading from the file. -TEST_F(MMapFileTest, Bug38498194) { - // Choose a sufficiently large map unit. - constexpr int kSize = 4 * 1024 * 1024; - EXPECT_THAT(ftruncate(fd_.get(), kSize), SyscallSucceeds()); - - // Map a large enough region so that multiple internal segments - // are created to back the mapping. - uintptr_t addr; - ASSERT_THAT( - addr = Map(0, kSize, PROT_READ | PROT_WRITE, MAP_SHARED, fd_.get(), 0), - SyscallSucceeds()); - - std::vector<char> expect(kSize, 'a'); - std::copy(expect.data(), expect.data() + expect.size(), - reinterpret_cast<volatile char*>(addr)); - - // Trigger writeback for gVisor. In Linux pages stay cached until - // it can't hold onto them anymore. - ASSERT_THAT(Unmap(), SyscallSucceeds()); - - std::vector<char> buf(kSize); - ASSERT_THAT(Read(buf.data(), buf.size()), - SyscallSucceedsWithValue(buf.size())); - EXPECT_EQ(buf, expect) << std::string(buf.data(), buf.size()); -} - -// Tests that reading from a file to a memory mapping of the same file does not -// deadlock. See b/34813270. -TEST_F(MMapFileTest, SelfRead) { - uintptr_t addr; - ASSERT_THAT(addr = Map(0, kPageSize, PROT_READ | PROT_WRITE, MAP_SHARED, - fd_.get(), 0), - SyscallSucceeds()); - EXPECT_THAT(Read(reinterpret_cast<char*>(addr), kPageSize / 2), - SyscallSucceedsWithValue(kPageSize / 2)); - // The resulting file contents are poorly-specified and irrelevant. -} - -// Tests that writing to a file from a memory mapping of the same file does not -// deadlock. Regression test for b/34813270. -TEST_F(MMapFileTest, SelfWrite) { - uintptr_t addr; - ASSERT_THAT(addr = Map(0, kPageSize, PROT_READ, MAP_SHARED, fd_.get(), 0), - SyscallSucceeds()); - EXPECT_THAT(Write(reinterpret_cast<char*>(addr), kPageSize / 2), - SyscallSucceedsWithValue(kPageSize / 2)); - // The resulting file contents are poorly-specified and irrelevant. -} - -TEST(MMapDeathTest, TruncateAfterCOWBreak) { - SetupGvisorDeathTest(); - - // Create and map a single-page file. - auto const temp_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - auto const fd = ASSERT_NO_ERRNO_AND_VALUE(Open(temp_file.path(), O_RDWR)); - ASSERT_THAT(ftruncate(fd.get(), kPageSize), SyscallSucceeds()); - auto const mapping = ASSERT_NO_ERRNO_AND_VALUE(Mmap( - nullptr, kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd.get(), 0)); - - // Write to this mapping, causing the page to be copied for write. - memset(mapping.ptr(), 'a', mapping.len()); - MaybeSave(); // Trigger a co-operative save cycle. - - // Truncate the file and expect it to invalidate the copied page. - ASSERT_THAT(ftruncate(fd.get(), 0), SyscallSucceeds()); - EXPECT_EXIT(*reinterpret_cast<volatile char*>(mapping.ptr()), - ::testing::KilledBySignal(SIGBUS), ""); -} - -// Regression test for #147. -TEST(MMapNoFixtureTest, MapReadOnlyAfterCreateWriteOnly) { - std::string filename = NewTempAbsPath(); - - // We have to create the file O_RDONLY to reproduce the bug because - // fsgofer.localFile.Create() silently upgrades O_WRONLY to O_RDWR, causing - // the cached "write-only" FD to be read/write and therefore usable by mmap(). - auto const ro_fd = ASSERT_NO_ERRNO_AND_VALUE( - Open(filename, O_RDONLY | O_CREAT | O_EXCL, 0666)); - - // Get a write-only FD for the same file, which should be ignored by mmap() - // (but isn't in #147). - auto const wo_fd = ASSERT_NO_ERRNO_AND_VALUE(Open(filename, O_WRONLY)); - ASSERT_THAT(ftruncate(wo_fd.get(), kPageSize), SyscallSucceeds()); - - auto const mapping = ASSERT_NO_ERRNO_AND_VALUE( - Mmap(nullptr, kPageSize, PROT_READ, MAP_SHARED, ro_fd.get(), 0)); - std::vector<char> buf(kPageSize); - // The test passes if this survives. - std::copy(static_cast<char*>(mapping.ptr()), - static_cast<char*>(mapping.endptr()), buf.data()); -} - -// Conditional on MAP_32BIT. -#ifdef __x86_64__ - -TEST(MMapNoFixtureTest, Map32Bit) { - auto const mapping = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(kPageSize, PROT_NONE, MAP_PRIVATE | MAP_32BIT)); - EXPECT_LT(mapping.addr(), static_cast<uintptr_t>(1) << 32); - EXPECT_LE(mapping.endaddr(), static_cast<uintptr_t>(1) << 32); -} - -#endif // defined(__x86_64__) - -INSTANTIATE_TEST_SUITE_P( - ReadWriteSharedPrivate, MMapFileParamTest, - ::testing::Combine(::testing::ValuesIn({ - PROT_READ, - PROT_WRITE, - PROT_READ | PROT_WRITE, - }), - ::testing::ValuesIn({MAP_SHARED, MAP_PRIVATE}))); - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/mount.cc b/test/syscalls/linux/mount.cc deleted file mode 100644 index a3e9745cf..000000000 --- a/test/syscalls/linux/mount.cc +++ /dev/null @@ -1,327 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <fcntl.h> -#include <stdio.h> -#include <sys/mount.h> -#include <sys/stat.h> -#include <unistd.h> - -#include <functional> -#include <memory> -#include <string> -#include <vector> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "absl/strings/string_view.h" -#include "absl/time/time.h" -#include "test/util/capability_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/fs_util.h" -#include "test/util/mount_util.h" -#include "test/util/multiprocess_util.h" -#include "test/util/posix_error.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -TEST(MountTest, MountBadFilesystem) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_ADMIN))); - - // Linux expects a valid target before it checks the file system name. - auto const dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - EXPECT_THAT(mount("", dir.path().c_str(), "foobar", 0, ""), - SyscallFailsWithErrno(ENODEV)); -} - -TEST(MountTest, MountInvalidTarget) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_ADMIN))); - - auto const dir = NewTempAbsPath(); - EXPECT_THAT(mount("", dir.c_str(), "tmpfs", 0, ""), - SyscallFailsWithErrno(ENOENT)); -} - -TEST(MountTest, MountPermDenied) { - // Clear CAP_SYS_ADMIN. - if (ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_ADMIN))) { - EXPECT_NO_ERRNO(SetCapability(CAP_SYS_ADMIN, false)); - } - - // Linux expects a valid target before checking capability. - auto const dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - EXPECT_THAT(mount("", dir.path().c_str(), "", 0, ""), - SyscallFailsWithErrno(EPERM)); -} - -TEST(MountTest, UmountPermDenied) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_ADMIN))); - - auto const dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - auto const mount = - ASSERT_NO_ERRNO_AND_VALUE(Mount("", dir.path(), "tmpfs", 0, "", 0)); - - // Drop privileges in another thread, so we can still unmount the mounted - // directory. - ScopedThread([&]() { - EXPECT_NO_ERRNO(SetCapability(CAP_SYS_ADMIN, false)); - EXPECT_THAT(umount(dir.path().c_str()), SyscallFailsWithErrno(EPERM)); - }); -} - -TEST(MountTest, MountOverBusy) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_ADMIN))); - - auto const dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - auto const fd = ASSERT_NO_ERRNO_AND_VALUE( - Open(JoinPath(dir.path(), "foo"), O_CREAT | O_RDWR, 0777)); - - // Should be able to mount over a busy directory. - ASSERT_NO_ERRNO_AND_VALUE(Mount("", dir.path(), "tmpfs", 0, "", 0)); -} - -TEST(MountTest, OpenFileBusy) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_ADMIN))); - - auto const dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - auto const mount = ASSERT_NO_ERRNO_AND_VALUE( - Mount("", dir.path(), "tmpfs", 0, "mode=0700", 0)); - auto const fd = ASSERT_NO_ERRNO_AND_VALUE( - Open(JoinPath(dir.path(), "foo"), O_CREAT | O_RDWR, 0777)); - - // An open file should prevent unmounting. - EXPECT_THAT(umount(dir.path().c_str()), SyscallFailsWithErrno(EBUSY)); -} - -TEST(MountTest, UmountDetach) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_ADMIN))); - - // structure: - // - // dir (mount point) - // subdir - // file - // - // We show that we can walk around in the mount after detach-unmount dir. - // - // We show that even though dir is unreachable from outside the mount, we can - // still reach dir's (former) parent! - auto const dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - - const struct stat before = ASSERT_NO_ERRNO_AND_VALUE(Stat(dir.path())); - auto mount = - ASSERT_NO_ERRNO_AND_VALUE(Mount("", dir.path(), "tmpfs", 0, "mode=0700", - /* umountflags= */ MNT_DETACH)); - const struct stat after = ASSERT_NO_ERRNO_AND_VALUE(Stat(dir.path())); - EXPECT_NE(before.st_ino, after.st_ino); - - // Create files in the new mount. - constexpr char kContents[] = "no no no"; - auto const subdir = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDirIn(dir.path())); - auto const file = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateFileWith(dir.path(), kContents, 0777)); - - auto const dir_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(subdir.path(), O_RDONLY | O_DIRECTORY)); - auto const fd = ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDONLY)); - - // Unmount the tmpfs. - mount.Release()(); - - const struct stat after2 = ASSERT_NO_ERRNO_AND_VALUE(Stat(dir.path())); - EXPECT_EQ(before.st_ino, after2.st_ino); - - // Can still read file after unmounting. - std::vector<char> buf(sizeof(kContents)); - EXPECT_THAT(ReadFd(fd.get(), buf.data(), buf.size()), SyscallSucceeds()); - - // Walk to dir. - auto const mounted_dir = ASSERT_NO_ERRNO_AND_VALUE( - OpenAt(dir_fd.get(), "..", O_DIRECTORY | O_RDONLY)); - // Walk to dir/file. - auto const fd_again = ASSERT_NO_ERRNO_AND_VALUE( - OpenAt(mounted_dir.get(), std::string(Basename(file.path())), O_RDONLY)); - - std::vector<char> buf2(sizeof(kContents)); - EXPECT_THAT(ReadFd(fd_again.get(), buf2.data(), buf2.size()), - SyscallSucceeds()); - EXPECT_EQ(buf, buf2); - - // Walking outside the unmounted realm should still work, too! - auto const dir_parent = ASSERT_NO_ERRNO_AND_VALUE( - OpenAt(mounted_dir.get(), "..", O_DIRECTORY | O_RDONLY)); -} - -TEST(MountTest, ActiveSubmountBusy) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_ADMIN))); - - auto const dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - auto const mount1 = ASSERT_NO_ERRNO_AND_VALUE( - Mount("", dir.path(), "tmpfs", 0, "mode=0700", 0)); - - auto const dir2 = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDirIn(dir.path())); - auto const mount2 = - ASSERT_NO_ERRNO_AND_VALUE(Mount("", dir2.path(), "tmpfs", 0, "", 0)); - - // Since dir now has an active submount, should not be able to unmount. - EXPECT_THAT(umount(dir.path().c_str()), SyscallFailsWithErrno(EBUSY)); -} - -TEST(MountTest, MountTmpfs) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_ADMIN))); - - auto const dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - - // NOTE(b/129868551): Inode IDs are only stable across S/R if we have an open - // FD for that inode. Since we are going to compare inode IDs below, get a - // FileDescriptor for this directory here, which will be closed automatically - // at the end of the test. - auto const fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(dir.path(), O_DIRECTORY, O_RDONLY)); - - const struct stat before = ASSERT_NO_ERRNO_AND_VALUE(Stat(dir.path())); - - { - auto const mount = ASSERT_NO_ERRNO_AND_VALUE( - Mount("", dir.path(), "tmpfs", 0, "mode=0700", 0)); - - const struct stat s = ASSERT_NO_ERRNO_AND_VALUE(Stat(dir.path())); - EXPECT_EQ(s.st_mode, S_IFDIR | 0700); - EXPECT_NE(s.st_ino, before.st_ino); - - EXPECT_NO_ERRNO(Open(JoinPath(dir.path(), "foo"), O_CREAT | O_RDWR, 0777)); - } - - // Now that dir is unmounted again, we should have the old inode back. - const struct stat after = ASSERT_NO_ERRNO_AND_VALUE(Stat(dir.path())); - EXPECT_EQ(before.st_ino, after.st_ino); -} - -TEST(MountTest, MountTmpfsMagicValIgnored) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_ADMIN))); - - auto const dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - - auto const mount = ASSERT_NO_ERRNO_AND_VALUE( - Mount("", dir.path(), "tmpfs", MS_MGC_VAL, "mode=0700", 0)); -} - -// Passing nullptr to data is equivalent to "". -TEST(MountTest, NullData) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_ADMIN))); - - auto const dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - - EXPECT_THAT(mount("", dir.path().c_str(), "tmpfs", 0, nullptr), - SyscallSucceeds()); - EXPECT_THAT(umount2(dir.path().c_str(), 0), SyscallSucceeds()); -} - -TEST(MountTest, MountReadonly) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_ADMIN))); - - auto const dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - auto const mount = ASSERT_NO_ERRNO_AND_VALUE( - Mount("", dir.path(), "tmpfs", MS_RDONLY, "mode=0777", 0)); - - const struct stat s = ASSERT_NO_ERRNO_AND_VALUE(Stat(dir.path())); - EXPECT_EQ(s.st_mode, S_IFDIR | 0777); - - std::string const filename = JoinPath(dir.path(), "foo"); - EXPECT_THAT(open(filename.c_str(), O_RDWR | O_CREAT, 0777), - SyscallFailsWithErrno(EROFS)); -} - -PosixErrorOr<absl::Time> ATime(absl::string_view file) { - struct stat s = {}; - if (stat(std::string(file).c_str(), &s) == -1) { - return PosixError(errno, "stat failed"); - } - return absl::TimeFromTimespec(s.st_atim); -} - -TEST(MountTest, MountNoAtime) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_ADMIN))); - - auto const dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - auto const mount = ASSERT_NO_ERRNO_AND_VALUE( - Mount("", dir.path(), "tmpfs", MS_NOATIME, "mode=0777", 0)); - - std::string const contents = "No no no, don't follow the instructions!"; - auto const file = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateFileWith(dir.path(), contents, 0777)); - - absl::Time const before = ASSERT_NO_ERRNO_AND_VALUE(ATime(file.path())); - - // Reading from the file should change the atime, but the MS_NOATIME flag - // should prevent that. - auto const fd = ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR)); - char buf[100]; - int read_n; - ASSERT_THAT(read_n = read(fd.get(), buf, sizeof(buf)), SyscallSucceeds()); - EXPECT_EQ(std::string(buf, read_n), contents); - - absl::Time const after = ASSERT_NO_ERRNO_AND_VALUE(ATime(file.path())); - - // Expect that atime hasn't changed. - EXPECT_EQ(before, after); -} - -TEST(MountTest, MountNoExec) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_ADMIN))); - - auto const dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - auto const mount = ASSERT_NO_ERRNO_AND_VALUE( - Mount("", dir.path(), "tmpfs", MS_NOEXEC, "mode=0777", 0)); - - std::string const contents = "No no no, don't follow the instructions!"; - auto const file = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateFileWith(dir.path(), contents, 0777)); - - int execve_errno; - ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(file.path(), {}, {}, nullptr, &execve_errno)); - EXPECT_EQ(execve_errno, EACCES); -} - -TEST(MountTest, RenameRemoveMountPoint) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_ADMIN))); - - auto const dir_parent = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - auto const dir = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDirIn(dir_parent.path())); - auto const new_dir = NewTempAbsPath(); - - auto const mount = - ASSERT_NO_ERRNO_AND_VALUE(Mount("", dir.path(), "tmpfs", 0, "", 0)); - - ASSERT_THAT(rename(dir.path().c_str(), new_dir.c_str()), - SyscallFailsWithErrno(EBUSY)); - - ASSERT_THAT(rmdir(dir.path().c_str()), SyscallFailsWithErrno(EBUSY)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/mremap.cc b/test/syscalls/linux/mremap.cc deleted file mode 100644 index f0e5f7d82..000000000 --- a/test/syscalls/linux/mremap.cc +++ /dev/null @@ -1,492 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <string.h> -#include <sys/mman.h> - -#include <string> - -#include "gmock/gmock.h" -#include "absl/strings/string_view.h" -#include "test/util/file_descriptor.h" -#include "test/util/logging.h" -#include "test/util/memory_util.h" -#include "test/util/multiprocess_util.h" -#include "test/util/posix_error.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -using ::testing::_; - -namespace gvisor { -namespace testing { - -namespace { - -// Fixture for mremap tests parameterized by mmap flags. -using MremapParamTest = ::testing::TestWithParam<int>; - -TEST_P(MremapParamTest, Noop) { - Mapping const m = - ASSERT_NO_ERRNO_AND_VALUE(MmapAnon(kPageSize, PROT_NONE, GetParam())); - - ASSERT_THAT(Mremap(m.ptr(), kPageSize, kPageSize, 0, nullptr), - IsPosixErrorOkAndHolds(m.ptr())); - EXPECT_TRUE(IsMapped(m.addr())); -} - -TEST_P(MremapParamTest, InPlace_ShrinkingWholeVMA) { - Mapping const m = - ASSERT_NO_ERRNO_AND_VALUE(MmapAnon(2 * kPageSize, PROT_NONE, GetParam())); - - const auto rest = [&] { - // N.B. we must be in a single-threaded subprocess to ensure a - // background thread doesn't concurrently map the second page. - void* addr = mremap(m.ptr(), 2 * kPageSize, kPageSize, 0, nullptr); - TEST_PCHECK_MSG(addr != MAP_FAILED, "mremap failed"); - TEST_CHECK(addr == m.ptr()); - MaybeSave(); - - TEST_CHECK(IsMapped(m.addr())); - TEST_CHECK(!IsMapped(m.addr() + kPageSize)); - }; - - EXPECT_THAT(InForkedProcess(rest), IsPosixErrorOkAndHolds(0)); -} - -TEST_P(MremapParamTest, InPlace_ShrinkingPartialVMA) { - Mapping const m = - ASSERT_NO_ERRNO_AND_VALUE(MmapAnon(3 * kPageSize, PROT_NONE, GetParam())); - - const auto rest = [&] { - void* addr = mremap(m.ptr(), 2 * kPageSize, kPageSize, 0, nullptr); - TEST_PCHECK_MSG(addr != MAP_FAILED, "mremap failed"); - TEST_CHECK(addr == m.ptr()); - MaybeSave(); - - TEST_CHECK(IsMapped(m.addr())); - TEST_CHECK(!IsMapped(m.addr() + kPageSize)); - TEST_CHECK(IsMapped(m.addr() + 2 * kPageSize)); - }; - - EXPECT_THAT(InForkedProcess(rest), IsPosixErrorOkAndHolds(0)); -} - -TEST_P(MremapParamTest, InPlace_ShrinkingAcrossVMAs) { - Mapping const m = - ASSERT_NO_ERRNO_AND_VALUE(MmapAnon(3 * kPageSize, PROT_READ, GetParam())); - // Changing permissions on the first page forces it to become a separate vma. - ASSERT_THAT(mprotect(m.ptr(), kPageSize, PROT_NONE), SyscallSucceeds()); - - const auto rest = [&] { - // Both old_size and new_size now span two vmas; mremap - // shouldn't care. - void* addr = mremap(m.ptr(), 3 * kPageSize, 2 * kPageSize, 0, nullptr); - TEST_PCHECK_MSG(addr != MAP_FAILED, "mremap failed"); - TEST_CHECK(addr == m.ptr()); - MaybeSave(); - - TEST_CHECK(IsMapped(m.addr())); - TEST_CHECK(IsMapped(m.addr() + kPageSize)); - TEST_CHECK(!IsMapped(m.addr() + 2 * kPageSize)); - }; - - EXPECT_THAT(InForkedProcess(rest), IsPosixErrorOkAndHolds(0)); -} - -TEST_P(MremapParamTest, InPlace_ExpansionSuccess) { - Mapping const m = - ASSERT_NO_ERRNO_AND_VALUE(MmapAnon(2 * kPageSize, PROT_NONE, GetParam())); - - const auto rest = [&] { - // Unmap the second page so that the first can be expanded back into it. - // - // N.B. we must be in a single-threaded subprocess to ensure a - // background thread doesn't concurrently map this page. - TEST_PCHECK( - munmap(reinterpret_cast<void*>(m.addr() + kPageSize), kPageSize) == 0); - MaybeSave(); - - void* addr = mremap(m.ptr(), kPageSize, 2 * kPageSize, 0, nullptr); - TEST_PCHECK_MSG(addr != MAP_FAILED, "mremap failed"); - TEST_CHECK(addr == m.ptr()); - MaybeSave(); - - TEST_CHECK(IsMapped(m.addr())); - TEST_CHECK(IsMapped(m.addr() + kPageSize)); - }; - - EXPECT_THAT(InForkedProcess(rest), IsPosixErrorOkAndHolds(0)); -} - -TEST_P(MremapParamTest, InPlace_ExpansionFailure) { - Mapping const m = - ASSERT_NO_ERRNO_AND_VALUE(MmapAnon(3 * kPageSize, PROT_NONE, GetParam())); - - const auto rest = [&] { - // Unmap the second page, leaving a one-page hole. Trying to expand the - // first page to three pages should fail since the original third page - // is still mapped. - TEST_PCHECK( - munmap(reinterpret_cast<void*>(m.addr() + kPageSize), kPageSize) == 0); - MaybeSave(); - - void* addr = mremap(m.ptr(), kPageSize, 3 * kPageSize, 0, nullptr); - TEST_CHECK_MSG(addr == MAP_FAILED, "mremap unexpectedly succeeded"); - TEST_PCHECK_MSG(errno == ENOMEM, "mremap failed with wrong errno"); - MaybeSave(); - - TEST_CHECK(IsMapped(m.addr())); - TEST_CHECK(!IsMapped(m.addr() + kPageSize)); - TEST_CHECK(IsMapped(m.addr() + 2 * kPageSize)); - }; - - EXPECT_THAT(InForkedProcess(rest), IsPosixErrorOkAndHolds(0)); -} - -TEST_P(MremapParamTest, MayMove_Expansion) { - Mapping const m = - ASSERT_NO_ERRNO_AND_VALUE(MmapAnon(3 * kPageSize, PROT_NONE, GetParam())); - - const auto rest = [&] { - // Unmap the second page, leaving a one-page hole. Trying to expand the - // first page to three pages with MREMAP_MAYMOVE should force the - // mapping to be relocated since the original third page is still - // mapped. - TEST_PCHECK( - munmap(reinterpret_cast<void*>(m.addr() + kPageSize), kPageSize) == 0); - MaybeSave(); - - void* addr2 = - mremap(m.ptr(), kPageSize, 3 * kPageSize, MREMAP_MAYMOVE, nullptr); - TEST_PCHECK_MSG(addr2 != MAP_FAILED, "mremap failed"); - MaybeSave(); - - const Mapping m2 = Mapping(addr2, 3 * kPageSize); - TEST_CHECK(m.addr() != m2.addr()); - - TEST_CHECK(!IsMapped(m.addr())); - TEST_CHECK(!IsMapped(m.addr() + kPageSize)); - TEST_CHECK(IsMapped(m.addr() + 2 * kPageSize)); - TEST_CHECK(IsMapped(m2.addr())); - TEST_CHECK(IsMapped(m2.addr() + kPageSize)); - TEST_CHECK(IsMapped(m2.addr() + 2 * kPageSize)); - }; - - EXPECT_THAT(InForkedProcess(rest), IsPosixErrorOkAndHolds(0)); -} - -TEST_P(MremapParamTest, Fixed_SourceAndDestinationCannotOverlap) { - Mapping const m = - ASSERT_NO_ERRNO_AND_VALUE(MmapAnon(kPageSize, PROT_NONE, GetParam())); - - ASSERT_THAT(Mremap(m.ptr(), kPageSize, kPageSize, - MREMAP_MAYMOVE | MREMAP_FIXED, m.ptr()), - PosixErrorIs(EINVAL, _)); - EXPECT_TRUE(IsMapped(m.addr())); -} - -TEST_P(MremapParamTest, Fixed_SameSize) { - Mapping const src = - ASSERT_NO_ERRNO_AND_VALUE(MmapAnon(kPageSize, PROT_NONE, GetParam())); - Mapping const dst = - ASSERT_NO_ERRNO_AND_VALUE(MmapAnon(kPageSize, PROT_NONE, GetParam())); - - const auto rest = [&] { - // Unmap dst to create a hole. - TEST_PCHECK(munmap(dst.ptr(), kPageSize) == 0); - MaybeSave(); - - void* addr = mremap(src.ptr(), kPageSize, kPageSize, - MREMAP_MAYMOVE | MREMAP_FIXED, dst.ptr()); - TEST_PCHECK_MSG(addr != MAP_FAILED, "mremap failed"); - TEST_CHECK(addr == dst.ptr()); - MaybeSave(); - - TEST_CHECK(!IsMapped(src.addr())); - TEST_CHECK(IsMapped(dst.addr())); - }; - - EXPECT_THAT(InForkedProcess(rest), IsPosixErrorOkAndHolds(0)); -} - -TEST_P(MremapParamTest, Fixed_SameSize_Unmapping) { - // Like the Fixed_SameSize case, but expect mremap to unmap the destination - // automatically. - Mapping const src = - ASSERT_NO_ERRNO_AND_VALUE(MmapAnon(kPageSize, PROT_NONE, GetParam())); - Mapping const dst = - ASSERT_NO_ERRNO_AND_VALUE(MmapAnon(kPageSize, PROT_NONE, GetParam())); - - const auto rest = [&] { - void* addr = mremap(src.ptr(), kPageSize, kPageSize, - MREMAP_MAYMOVE | MREMAP_FIXED, dst.ptr()); - TEST_PCHECK_MSG(addr != MAP_FAILED, "mremap failed"); - TEST_CHECK(addr == dst.ptr()); - MaybeSave(); - - TEST_CHECK(!IsMapped(src.addr())); - TEST_CHECK(IsMapped(dst.addr())); - }; - - EXPECT_THAT(InForkedProcess(rest), IsPosixErrorOkAndHolds(0)); -} - -TEST_P(MremapParamTest, Fixed_ShrinkingWholeVMA) { - Mapping const src = - ASSERT_NO_ERRNO_AND_VALUE(MmapAnon(2 * kPageSize, PROT_NONE, GetParam())); - Mapping const dst = - ASSERT_NO_ERRNO_AND_VALUE(MmapAnon(2 * kPageSize, PROT_NONE, GetParam())); - - const auto rest = [&] { - // Unmap dst so we can check that mremap does not keep the - // second page. - TEST_PCHECK(munmap(dst.ptr(), 2 * kPageSize) == 0); - MaybeSave(); - - void* addr = mremap(src.ptr(), 2 * kPageSize, kPageSize, - MREMAP_MAYMOVE | MREMAP_FIXED, dst.ptr()); - TEST_PCHECK_MSG(addr != MAP_FAILED, "mremap failed"); - TEST_CHECK(addr == dst.ptr()); - MaybeSave(); - - TEST_CHECK(!IsMapped(src.addr())); - TEST_CHECK(!IsMapped(src.addr() + kPageSize)); - TEST_CHECK(IsMapped(dst.addr())); - TEST_CHECK(!IsMapped(dst.addr() + kPageSize)); - }; - - EXPECT_THAT(InForkedProcess(rest), IsPosixErrorOkAndHolds(0)); -} - -TEST_P(MremapParamTest, Fixed_ShrinkingPartialVMA) { - Mapping const src = - ASSERT_NO_ERRNO_AND_VALUE(MmapAnon(3 * kPageSize, PROT_NONE, GetParam())); - Mapping const dst = - ASSERT_NO_ERRNO_AND_VALUE(MmapAnon(2 * kPageSize, PROT_NONE, GetParam())); - - const auto rest = [&] { - // Unmap dst so we can check that mremap does not keep the - // second page. - TEST_PCHECK(munmap(dst.ptr(), 2 * kPageSize) == 0); - MaybeSave(); - - void* addr = mremap(src.ptr(), 2 * kPageSize, kPageSize, - MREMAP_MAYMOVE | MREMAP_FIXED, dst.ptr()); - TEST_PCHECK_MSG(addr != MAP_FAILED, "mremap failed"); - TEST_CHECK(addr == dst.ptr()); - MaybeSave(); - - TEST_CHECK(!IsMapped(src.addr())); - TEST_CHECK(!IsMapped(src.addr() + kPageSize)); - TEST_CHECK(IsMapped(src.addr() + 2 * kPageSize)); - TEST_CHECK(IsMapped(dst.addr())); - TEST_CHECK(!IsMapped(dst.addr() + kPageSize)); - }; - - EXPECT_THAT(InForkedProcess(rest), IsPosixErrorOkAndHolds(0)); -} - -TEST_P(MremapParamTest, Fixed_ShrinkingAcrossVMAs) { - Mapping const src = - ASSERT_NO_ERRNO_AND_VALUE(MmapAnon(3 * kPageSize, PROT_READ, GetParam())); - // Changing permissions on the first page forces it to become a separate vma. - ASSERT_THAT(mprotect(src.ptr(), kPageSize, PROT_NONE), SyscallSucceeds()); - Mapping const dst = - ASSERT_NO_ERRNO_AND_VALUE(MmapAnon(2 * kPageSize, PROT_NONE, GetParam())); - - const auto rest = [&] { - // Unlike flags=0, MREMAP_FIXED requires that [old_address, - // old_address+new_size) only spans a single vma. - void* addr = mremap(src.ptr(), 3 * kPageSize, 2 * kPageSize, - MREMAP_MAYMOVE | MREMAP_FIXED, dst.ptr()); - TEST_CHECK_MSG(addr == MAP_FAILED, "mremap unexpectedly succeeded"); - TEST_PCHECK_MSG(errno == EFAULT, "mremap failed with wrong errno"); - MaybeSave(); - - TEST_CHECK(IsMapped(src.addr())); - TEST_CHECK(IsMapped(src.addr() + kPageSize)); - // Despite failing, mremap should have unmapped [old_address+new_size, - // old_address+old_size) (i.e. the third page). - TEST_CHECK(!IsMapped(src.addr() + 2 * kPageSize)); - // Despite failing, mremap should have unmapped the destination pages. - TEST_CHECK(!IsMapped(dst.addr())); - TEST_CHECK(!IsMapped(dst.addr() + kPageSize)); - }; - - EXPECT_THAT(InForkedProcess(rest), IsPosixErrorOkAndHolds(0)); -} - -TEST_P(MremapParamTest, Fixed_Expansion) { - Mapping const src = - ASSERT_NO_ERRNO_AND_VALUE(MmapAnon(kPageSize, PROT_NONE, GetParam())); - Mapping const dst = - ASSERT_NO_ERRNO_AND_VALUE(MmapAnon(2 * kPageSize, PROT_NONE, GetParam())); - - const auto rest = [&] { - // Unmap dst so we can check that mremap actually maps all pages - // at the destination. - TEST_PCHECK(munmap(dst.ptr(), 2 * kPageSize) == 0); - MaybeSave(); - - void* addr = mremap(src.ptr(), kPageSize, 2 * kPageSize, - MREMAP_MAYMOVE | MREMAP_FIXED, dst.ptr()); - TEST_PCHECK_MSG(addr != MAP_FAILED, "mremap failed"); - TEST_CHECK(addr == dst.ptr()); - MaybeSave(); - - TEST_CHECK(!IsMapped(src.addr())); - TEST_CHECK(IsMapped(dst.addr())); - TEST_CHECK(IsMapped(dst.addr() + kPageSize)); - }; - - EXPECT_THAT(InForkedProcess(rest), IsPosixErrorOkAndHolds(0)); -} - -INSTANTIATE_TEST_SUITE_P(PrivateShared, MremapParamTest, - ::testing::Values(MAP_PRIVATE, MAP_SHARED)); - -// mremap with old_size == 0 only works with MAP_SHARED after Linux 4.14 -// (dba58d3b8c50 "mm/mremap: fail map duplication attempts for private -// mappings"). - -TEST(MremapTest, InPlace_Copy) { - Mapping const m = - ASSERT_NO_ERRNO_AND_VALUE(MmapAnon(kPageSize, PROT_NONE, MAP_SHARED)); - EXPECT_THAT(Mremap(m.ptr(), 0, kPageSize, 0, nullptr), - PosixErrorIs(ENOMEM, _)); -} - -TEST(MremapTest, MayMove_Copy) { - Mapping const m = - ASSERT_NO_ERRNO_AND_VALUE(MmapAnon(kPageSize, PROT_NONE, MAP_SHARED)); - - // Remainder of this test executes in a subprocess to ensure that if mremap - // incorrectly removes m, it is not remapped by another thread. - const auto rest = [&] { - void* ptr = mremap(m.ptr(), 0, kPageSize, MREMAP_MAYMOVE, nullptr); - MaybeSave(); - TEST_PCHECK_MSG(ptr != MAP_FAILED, "mremap failed"); - TEST_CHECK(ptr != m.ptr()); - TEST_CHECK(IsMapped(m.addr())); - TEST_CHECK(IsMapped(reinterpret_cast<uintptr_t>(ptr))); - }; - EXPECT_THAT(InForkedProcess(rest), IsPosixErrorOkAndHolds(0)); -} - -TEST(MremapTest, MustMove_Copy) { - Mapping const src = - ASSERT_NO_ERRNO_AND_VALUE(MmapAnon(kPageSize, PROT_NONE, MAP_SHARED)); - Mapping const dst = - ASSERT_NO_ERRNO_AND_VALUE(MmapAnon(kPageSize, PROT_NONE, MAP_PRIVATE)); - - // Remainder of this test executes in a subprocess to ensure that if mremap - // incorrectly removes src, it is not remapped by another thread. - const auto rest = [&] { - void* ptr = mremap(src.ptr(), 0, kPageSize, MREMAP_MAYMOVE | MREMAP_FIXED, - dst.ptr()); - MaybeSave(); - TEST_PCHECK_MSG(ptr != MAP_FAILED, "mremap failed"); - TEST_CHECK(ptr == dst.ptr()); - TEST_CHECK(IsMapped(src.addr())); - TEST_CHECK(IsMapped(dst.addr())); - }; - EXPECT_THAT(InForkedProcess(rest), IsPosixErrorOkAndHolds(0)); -} - -void ExpectAllBytesAre(absl::string_view v, char c) { - for (size_t i = 0; i < v.size(); i++) { - ASSERT_EQ(v[i], c) << "at offset " << i; - } -} - -TEST(MremapTest, ExpansionPreservesCOWPagesAndExposesNewFilePages) { - // Create a file with 3 pages. The first is filled with 'a', the second is - // filled with 'b', and the third is filled with 'c'. - TempPath const file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR)); - ASSERT_THAT(WriteFd(fd.get(), std::string(kPageSize, 'a').c_str(), kPageSize), - SyscallSucceedsWithValue(kPageSize)); - ASSERT_THAT(WriteFd(fd.get(), std::string(kPageSize, 'b').c_str(), kPageSize), - SyscallSucceedsWithValue(kPageSize)); - ASSERT_THAT(WriteFd(fd.get(), std::string(kPageSize, 'c').c_str(), kPageSize), - SyscallSucceedsWithValue(kPageSize)); - - // Create a private mapping of the first 2 pages, and fill the second page - // with 'd'. - Mapping const src = ASSERT_NO_ERRNO_AND_VALUE(Mmap(nullptr, 2 * kPageSize, - PROT_READ | PROT_WRITE, - MAP_PRIVATE, fd.get(), 0)); - memset(reinterpret_cast<void*>(src.addr() + kPageSize), 'd', kPageSize); - MaybeSave(); - - // Move the mapping while expanding it to 3 pages. The resulting mapping - // should contain the original first page of the file (filled with 'a'), - // followed by the private copy of the second page (filled with 'd'), followed - // by the newly-mapped third page of the file (filled with 'c'). - Mapping const dst = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(3 * kPageSize, PROT_NONE, MAP_PRIVATE)); - ASSERT_THAT(Mremap(src.ptr(), 2 * kPageSize, 3 * kPageSize, - MREMAP_MAYMOVE | MREMAP_FIXED, dst.ptr()), - IsPosixErrorOkAndHolds(dst.ptr())); - auto const v = dst.view(); - ExpectAllBytesAre(v.substr(0, kPageSize), 'a'); - ExpectAllBytesAre(v.substr(kPageSize, kPageSize), 'd'); - ExpectAllBytesAre(v.substr(2 * kPageSize, kPageSize), 'c'); -} - -TEST(MremapDeathTest, SharedAnon) { - SetupGvisorDeathTest(); - - // Reserve 4 pages of address space. - Mapping const reserved = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(4 * kPageSize, PROT_NONE, MAP_PRIVATE)); - - // Create a 2-page shared anonymous mapping at the beginning of the - // reservation. Fill the first page with 'a' and the second with 'b'. - Mapping const m = ASSERT_NO_ERRNO_AND_VALUE( - Mmap(reserved.ptr(), 2 * kPageSize, PROT_READ | PROT_WRITE, - MAP_SHARED | MAP_ANONYMOUS | MAP_FIXED, -1, 0)); - memset(m.ptr(), 'a', kPageSize); - memset(reinterpret_cast<void*>(m.addr() + kPageSize), 'b', kPageSize); - MaybeSave(); - - // Shrink the mapping to 1 page in-place. - ASSERT_THAT(Mremap(m.ptr(), 2 * kPageSize, kPageSize, 0, m.ptr()), - IsPosixErrorOkAndHolds(m.ptr())); - - // Expand the mapping to 3 pages, moving it forward by 1 page in the process - // since the old and new mappings can't overlap. - void* const new_m = reinterpret_cast<void*>(m.addr() + kPageSize); - ASSERT_THAT(Mremap(m.ptr(), kPageSize, 3 * kPageSize, - MREMAP_MAYMOVE | MREMAP_FIXED, new_m), - IsPosixErrorOkAndHolds(new_m)); - - // The first 2 pages of the mapping should still contain the data we wrote - // (i.e. shrinking should not have discarded the second page's data), while - // touching the third page should raise SIGBUS. - auto const v = - absl::string_view(static_cast<char const*>(new_m), 3 * kPageSize); - ExpectAllBytesAre(v.substr(0, kPageSize), 'a'); - ExpectAllBytesAre(v.substr(kPageSize, kPageSize), 'b'); - EXPECT_EXIT(ExpectAllBytesAre(v.substr(2 * kPageSize, kPageSize), '\0'), - ::testing::KilledBySignal(SIGBUS), ""); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/msync.cc b/test/syscalls/linux/msync.cc deleted file mode 100644 index 2b2b6aef9..000000000 --- a/test/syscalls/linux/msync.cc +++ /dev/null @@ -1,151 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <sys/mman.h> -#include <unistd.h> - -#include <functional> -#include <string> -#include <utility> -#include <vector> - -#include "test/util/file_descriptor.h" -#include "test/util/memory_util.h" -#include "test/util/posix_error.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -// Parameters for msync tests. Use a std::tuple so we can use -// ::testing::Combine. -using MsyncTestParam = - std::tuple<int, // msync flags - std::function<PosixErrorOr<Mapping>()> // returns mapping to - // msync - >; - -class MsyncParameterizedTest : public ::testing::TestWithParam<MsyncTestParam> { - protected: - int msync_flags() const { return std::get<0>(GetParam()); } - - PosixErrorOr<Mapping> GetMapping() const { return std::get<1>(GetParam())(); } -}; - -// All valid msync(2) flag combinations, not including MS_INVALIDATE. ("Linux -// permits a call to msync() that specifies neither [MS_SYNC or MS_ASYNC], with -// semantics that are (currently) equivalent to specifying MS_ASYNC." - -// msync(2)) -constexpr std::initializer_list<int> kMsyncFlags = {MS_SYNC, MS_ASYNC, 0}; - -// Returns functions that return mappings that should be successfully -// msync()able. -std::vector<std::function<PosixErrorOr<Mapping>()>> SyncableMappings() { - std::vector<std::function<PosixErrorOr<Mapping>()>> funcs; - for (bool const writable : {false, true}) { - for (int const mflags : {MAP_PRIVATE, MAP_SHARED}) { - int const prot = PROT_READ | (writable ? PROT_WRITE : 0); - int const oflags = O_CREAT | (writable ? O_RDWR : O_RDONLY); - funcs.push_back([=] { return MmapAnon(kPageSize, prot, mflags); }); - funcs.push_back([=]() -> PosixErrorOr<Mapping> { - std::string const path = NewTempAbsPath(); - ASSIGN_OR_RETURN_ERRNO(auto fd, Open(path, oflags, 0644)); - // Don't unlink the file since that breaks save/restore. Just let the - // test infrastructure clean up all of our temporary files when we're - // done. - return Mmap(nullptr, kPageSize, prot, mflags, fd.get(), 0); - }); - } - } - return funcs; -} - -PosixErrorOr<Mapping> NoMappings() { - return PosixError(EINVAL, "unexpected attempt to create a mapping"); -} - -// "Fixture" for msync tests that hold for all valid flags, but do not create -// mappings. -using MsyncNoMappingTest = MsyncParameterizedTest; - -TEST_P(MsyncNoMappingTest, UnmappedAddressWithZeroLengthSucceeds) { - EXPECT_THAT(msync(nullptr, 0, msync_flags()), SyscallSucceeds()); -} - -TEST_P(MsyncNoMappingTest, UnmappedAddressWithNonzeroLengthFails) { - EXPECT_THAT(msync(nullptr, kPageSize, msync_flags()), - SyscallFailsWithErrno(ENOMEM)); -} - -INSTANTIATE_TEST_SUITE_P(All, MsyncNoMappingTest, - ::testing::Combine(::testing::ValuesIn(kMsyncFlags), - ::testing::Values(NoMappings))); - -// "Fixture" for msync tests that are not parameterized by msync flags, but do -// create mappings. -using MsyncNoFlagsTest = MsyncParameterizedTest; - -TEST_P(MsyncNoFlagsTest, BothSyncAndAsyncFails) { - auto m = ASSERT_NO_ERRNO_AND_VALUE(GetMapping()); - EXPECT_THAT(msync(m.ptr(), m.len(), MS_SYNC | MS_ASYNC), - SyscallFailsWithErrno(EINVAL)); -} - -INSTANTIATE_TEST_SUITE_P( - All, MsyncNoFlagsTest, - ::testing::Combine(::testing::Values(0), // ignored - ::testing::ValuesIn(SyncableMappings()))); - -// "Fixture" for msync tests parameterized by both msync flags and sources of -// mappings. -using MsyncFullParamTest = MsyncParameterizedTest; - -TEST_P(MsyncFullParamTest, NormallySucceeds) { - auto m = ASSERT_NO_ERRNO_AND_VALUE(GetMapping()); - EXPECT_THAT(msync(m.ptr(), m.len(), msync_flags()), SyscallSucceeds()); -} - -TEST_P(MsyncFullParamTest, UnalignedLengthSucceeds) { - auto m = ASSERT_NO_ERRNO_AND_VALUE(GetMapping()); - EXPECT_THAT(msync(m.ptr(), m.len() - 1, msync_flags()), SyscallSucceeds()); -} - -TEST_P(MsyncFullParamTest, UnalignedAddressFails) { - auto m = ASSERT_NO_ERRNO_AND_VALUE(GetMapping()); - EXPECT_THAT( - msync(reinterpret_cast<void*>(m.addr() + 1), m.len() - 1, msync_flags()), - SyscallFailsWithErrno(EINVAL)); -} - -TEST_P(MsyncFullParamTest, InvalidateUnlockedSucceeds) { - auto m = ASSERT_NO_ERRNO_AND_VALUE(GetMapping()); - EXPECT_THAT(msync(m.ptr(), m.len(), msync_flags() | MS_INVALIDATE), - SyscallSucceeds()); -} - -// The test for MS_INVALIDATE on mlocked pages is in mlock.cc since it requires -// probing for mlock support. - -INSTANTIATE_TEST_SUITE_P( - All, MsyncFullParamTest, - ::testing::Combine(::testing::ValuesIn(kMsyncFlags), - ::testing::ValuesIn(SyncableMappings()))); - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/munmap.cc b/test/syscalls/linux/munmap.cc deleted file mode 100644 index 067241f4d..000000000 --- a/test/syscalls/linux/munmap.cc +++ /dev/null @@ -1,53 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <sys/mman.h> - -#include "gtest/gtest.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -class MunmapTest : public ::testing::Test { - protected: - void SetUp() override { - m_ = mmap(nullptr, kPageSize, PROT_READ | PROT_WRITE, - MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); - ASSERT_NE(MAP_FAILED, m_); - } - - void* m_ = nullptr; -}; - -TEST_F(MunmapTest, HappyCase) { - EXPECT_THAT(munmap(m_, kPageSize), SyscallSucceeds()); -} - -TEST_F(MunmapTest, ZeroLength) { - EXPECT_THAT(munmap(m_, 0), SyscallFailsWithErrno(EINVAL)); -} - -TEST_F(MunmapTest, LastPageRoundUp) { - // Attempt to unmap up to and including the last page. - EXPECT_THAT(munmap(m_, static_cast<size_t>(-kPageSize + 1)), - SyscallFailsWithErrno(EINVAL)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/open.cc b/test/syscalls/linux/open.cc deleted file mode 100644 index 267ae19f6..000000000 --- a/test/syscalls/linux/open.cc +++ /dev/null @@ -1,400 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <fcntl.h> -#include <linux/capability.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <unistd.h> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "absl/memory/memory.h" -#include "test/syscalls/linux/file_base.h" -#include "test/util/capability_util.h" -#include "test/util/cleanup.h" -#include "test/util/file_descriptor.h" -#include "test/util/fs_util.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -// This test is currently very rudimentary. -// -// There are plenty of extra cases to cover once the sentry supports them. -// -// Different types of opens: -// * O_CREAT -// * O_DIRECTORY -// * O_NOFOLLOW -// * O_PATH <- Will we ever support this? -// -// Special operations on open: -// * O_EXCL -// -// Special files: -// * Blocking behavior for a named pipe. -// -// Different errors: -// * EACCES -// * EEXIST -// * ENAMETOOLONG -// * ELOOP -// * ENOTDIR -// * EPERM -class OpenTest : public FileTest { - void SetUp() override { - FileTest::SetUp(); - - ASSERT_THAT( - write(test_file_fd_.get(), test_data_.c_str(), test_data_.length()), - SyscallSucceedsWithValue(test_data_.length())); - EXPECT_THAT(lseek(test_file_fd_.get(), 0, SEEK_SET), SyscallSucceeds()); - } - - public: - const std::string test_data_ = "hello world\n"; -}; - -TEST_F(OpenTest, OTrunc) { - auto dirpath = JoinPath(GetAbsoluteTestTmpdir(), "truncd"); - ASSERT_THAT(mkdir(dirpath.c_str(), 0777), SyscallSucceeds()); - ASSERT_THAT(open(dirpath.c_str(), O_TRUNC, 0666), - SyscallFailsWithErrno(EISDIR)); -} - -TEST_F(OpenTest, OTruncAndReadOnlyDir) { - auto dirpath = JoinPath(GetAbsoluteTestTmpdir(), "truncd"); - ASSERT_THAT(mkdir(dirpath.c_str(), 0777), SyscallSucceeds()); - ASSERT_THAT(open(dirpath.c_str(), O_TRUNC | O_RDONLY, 0666), - SyscallFailsWithErrno(EISDIR)); -} - -TEST_F(OpenTest, OTruncAndReadOnlyFile) { - auto dirpath = JoinPath(GetAbsoluteTestTmpdir(), "truncfile"); - const FileDescriptor existing = - ASSERT_NO_ERRNO_AND_VALUE(Open(dirpath.c_str(), O_RDWR | O_CREAT, 0666)); - const FileDescriptor otrunc = ASSERT_NO_ERRNO_AND_VALUE( - Open(dirpath.c_str(), O_TRUNC | O_RDONLY, 0666)); -} - -TEST_F(OpenTest, ReadOnly) { - char buf; - const FileDescriptor ro_file = - ASSERT_NO_ERRNO_AND_VALUE(Open(test_file_name_, O_RDONLY)); - - EXPECT_THAT(read(ro_file.get(), &buf, 1), SyscallSucceedsWithValue(1)); - EXPECT_THAT(lseek(ro_file.get(), 0, SEEK_SET), SyscallSucceeds()); - EXPECT_THAT(write(ro_file.get(), &buf, 1), SyscallFailsWithErrno(EBADF)); -} - -TEST_F(OpenTest, WriteOnly) { - char buf; - const FileDescriptor wo_file = - ASSERT_NO_ERRNO_AND_VALUE(Open(test_file_name_, O_WRONLY)); - - EXPECT_THAT(read(wo_file.get(), &buf, 1), SyscallFailsWithErrno(EBADF)); - EXPECT_THAT(lseek(wo_file.get(), 0, SEEK_SET), SyscallSucceeds()); - EXPECT_THAT(write(wo_file.get(), &buf, 1), SyscallSucceedsWithValue(1)); -} - -TEST_F(OpenTest, ReadWrite) { - char buf; - const FileDescriptor rw_file = - ASSERT_NO_ERRNO_AND_VALUE(Open(test_file_name_, O_RDWR)); - - EXPECT_THAT(read(rw_file.get(), &buf, 1), SyscallSucceedsWithValue(1)); - EXPECT_THAT(lseek(rw_file.get(), 0, SEEK_SET), SyscallSucceeds()); - EXPECT_THAT(write(rw_file.get(), &buf, 1), SyscallSucceedsWithValue(1)); -} - -TEST_F(OpenTest, RelPath) { - auto name = std::string(Basename(test_file_name_)); - - ASSERT_THAT(chdir(GetAbsoluteTestTmpdir().c_str()), SyscallSucceeds()); - const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(name, O_RDONLY)); -} - -TEST_F(OpenTest, AbsPath) { - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(test_file_name_, O_RDONLY)); -} - -TEST_F(OpenTest, AtRelPath) { - auto name = std::string(Basename(test_file_name_)); - const FileDescriptor dirfd = ASSERT_NO_ERRNO_AND_VALUE( - Open(GetAbsoluteTestTmpdir(), O_RDONLY | O_DIRECTORY)); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(OpenAt(dirfd.get(), name, O_RDONLY)); -} - -TEST_F(OpenTest, AtAbsPath) { - const FileDescriptor dirfd = ASSERT_NO_ERRNO_AND_VALUE( - Open(GetAbsoluteTestTmpdir(), O_RDONLY | O_DIRECTORY)); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(OpenAt(dirfd.get(), test_file_name_, O_RDONLY)); -} - -TEST_F(OpenTest, OpenNoFollowSymlink) { - const std::string link_path = JoinPath(GetAbsoluteTestTmpdir(), "link"); - ASSERT_THAT(symlink(test_file_name_.c_str(), link_path.c_str()), - SyscallSucceeds()); - auto cleanup = Cleanup([link_path]() { - EXPECT_THAT(unlink(link_path.c_str()), SyscallSucceeds()); - }); - - // Open will succeed without O_NOFOLLOW and fails with O_NOFOLLOW. - const FileDescriptor fd2 = - ASSERT_NO_ERRNO_AND_VALUE(Open(link_path, O_RDONLY)); - ASSERT_THAT(open(link_path.c_str(), O_RDONLY | O_NOFOLLOW), - SyscallFailsWithErrno(ELOOP)); -} - -TEST_F(OpenTest, OpenNoFollowStillFollowsLinksInPath) { - // We will create the following structure: - // tmp_folder/real_folder/file - // tmp_folder/sym_folder -> tmp_folder/real_folder - // - // We will then open tmp_folder/sym_folder/file with O_NOFOLLOW and it - // should succeed as O_NOFOLLOW only applies to the final path component. - auto tmp_path = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDirIn(GetAbsoluteTestTmpdir())); - auto sym_path = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateSymlinkTo(GetAbsoluteTestTmpdir(), tmp_path.path())); - auto file_path = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(tmp_path.path())); - - auto path_via_symlink = JoinPath(sym_path.path(), Basename(file_path.path())); - const FileDescriptor fd2 = - ASSERT_NO_ERRNO_AND_VALUE(Open(path_via_symlink, O_RDONLY | O_NOFOLLOW)); -} - -TEST_F(OpenTest, Fault) { - char* totally_not_null = nullptr; - ASSERT_THAT(open(totally_not_null, O_RDONLY), SyscallFailsWithErrno(EFAULT)); -} - -TEST_F(OpenTest, AppendOnly) { - // First write some data to the fresh file. - const int64_t kBufSize = 1024; - std::vector<char> buf(kBufSize, 'a'); - - FileDescriptor fd0 = ASSERT_NO_ERRNO_AND_VALUE(Open(test_file_name_, O_RDWR)); - - std::fill(buf.begin(), buf.end(), 'a'); - EXPECT_THAT(WriteFd(fd0.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(buf.size())); - fd0.reset(); // Close the file early. - - // Next get two handles to the same file. We open two files because we want - // to make sure that appending is respected between them. - const FileDescriptor fd1 = - ASSERT_NO_ERRNO_AND_VALUE(Open(test_file_name_, O_RDWR | O_APPEND)); - EXPECT_THAT(lseek(fd1.get(), 0, SEEK_CUR), SyscallSucceedsWithValue(0)); - - const FileDescriptor fd2 = - ASSERT_NO_ERRNO_AND_VALUE(Open(test_file_name_, O_RDWR | O_APPEND)); - EXPECT_THAT(lseek(fd2.get(), 0, SEEK_CUR), SyscallSucceedsWithValue(0)); - - // Then try to write to the first file and make sure the bytes are appended. - EXPECT_THAT(WriteFd(fd1.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(buf.size())); - - // Check that the size of the file is correct and that the offset has been - // incremented to that size. - struct stat s0; - EXPECT_THAT(fstat(fd1.get(), &s0), SyscallSucceeds()); - EXPECT_EQ(s0.st_size, kBufSize * 2); - EXPECT_THAT(lseek(fd1.get(), 0, SEEK_CUR), - SyscallSucceedsWithValue(kBufSize * 2)); - - // Then try to write to the second file and make sure the bytes are appended. - EXPECT_THAT(WriteFd(fd2.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(buf.size())); - - // Check that the size of the file is correct and that the offset has been - // incremented to that size. - struct stat s1; - EXPECT_THAT(fstat(fd2.get(), &s1), SyscallSucceeds()); - EXPECT_EQ(s1.st_size, kBufSize * 3); - EXPECT_THAT(lseek(fd2.get(), 0, SEEK_CUR), - SyscallSucceedsWithValue(kBufSize * 3)); -} - -TEST_F(OpenTest, AppendConcurrentWrite) { - constexpr int kThreadCount = 5; - constexpr int kBytesPerThread = 10000; - std::unique_ptr<ScopedThread> threads[kThreadCount]; - - // In case of the uncached policy, we expect that a file system can be changed - // externally, so we create a new inode each time when we open a file and we - // can't guarantee that writes to files with O_APPEND will work correctly. - SKIP_IF(getenv("GVISOR_GOFER_UNCACHED")); - - EXPECT_THAT(truncate(test_file_name_.c_str(), 0), SyscallSucceeds()); - - std::string filename = test_file_name_; - DisableSave ds; // Too many syscalls. - // Start kThreadCount threads which will write concurrently into the same - // file. - for (int i = 0; i < kThreadCount; i++) { - threads[i] = absl::make_unique<ScopedThread>([filename]() { - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(filename, O_RDWR | O_APPEND)); - - for (int j = 0; j < kBytesPerThread; j++) { - EXPECT_THAT(WriteFd(fd.get(), &j, 1), SyscallSucceedsWithValue(1)); - } - }); - } - for (int i = 0; i < kThreadCount; i++) { - threads[i]->Join(); - } - - // Check that the size of the file is correct. - struct stat st; - EXPECT_THAT(stat(test_file_name_.c_str(), &st), SyscallSucceeds()); - EXPECT_EQ(st.st_size, kThreadCount * kBytesPerThread); -} - -TEST_F(OpenTest, Truncate) { - { - // First write some data to the new file and close it. - FileDescriptor fd0 = - ASSERT_NO_ERRNO_AND_VALUE(Open(test_file_name_, O_WRONLY)); - std::vector<char> orig(10, 'a'); - EXPECT_THAT(WriteFd(fd0.get(), orig.data(), orig.size()), - SyscallSucceedsWithValue(orig.size())); - } - - // Then open with truncate and verify that offset is set to 0. - const FileDescriptor fd1 = - ASSERT_NO_ERRNO_AND_VALUE(Open(test_file_name_, O_RDWR | O_TRUNC)); - EXPECT_THAT(lseek(fd1.get(), 0, SEEK_CUR), SyscallSucceedsWithValue(0)); - - // Then write less data to the file and ensure the old content is gone. - std::vector<char> want(5, 'b'); - EXPECT_THAT(WriteFd(fd1.get(), want.data(), want.size()), - SyscallSucceedsWithValue(want.size())); - - struct stat stat; - EXPECT_THAT(fstat(fd1.get(), &stat), SyscallSucceeds()); - EXPECT_EQ(stat.st_size, want.size()); - EXPECT_THAT(lseek(fd1.get(), 0, SEEK_CUR), - SyscallSucceedsWithValue(want.size())); - - // Read the data and ensure only the latest write is in the file. - std::vector<char> got(want.size() + 1, 'c'); - ASSERT_THAT(pread(fd1.get(), got.data(), got.size(), 0), - SyscallSucceedsWithValue(want.size())); - EXPECT_EQ(memcmp(want.data(), got.data(), want.size()), 0) - << "rbuf=" << got.data(); - EXPECT_EQ(got.back(), 'c'); // Last byte should not have been modified. -} - -TEST_F(OpenTest, NameTooLong) { - char buf[4097] = {}; - memset(buf, 'a', 4097); - EXPECT_THAT(open(buf, O_RDONLY), SyscallFailsWithErrno(ENAMETOOLONG)); -} - -TEST_F(OpenTest, DotsFromRoot) { - const FileDescriptor rootfd = - ASSERT_NO_ERRNO_AND_VALUE(Open("/", O_RDONLY | O_DIRECTORY)); - const FileDescriptor other_rootfd = - ASSERT_NO_ERRNO_AND_VALUE(OpenAt(rootfd.get(), "..", O_RDONLY)); -} - -TEST_F(OpenTest, DirectoryWritableFails) { - ASSERT_THAT(open(GetAbsoluteTestTmpdir().c_str(), O_RDWR), - SyscallFailsWithErrno(EISDIR)); -} - -TEST_F(OpenTest, FileNotDirectory) { - // Create a file and try to open it with O_DIRECTORY. - auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - ASSERT_THAT(open(file.path().c_str(), O_RDONLY | O_DIRECTORY), - SyscallFailsWithErrno(ENOTDIR)); -} - -TEST_F(OpenTest, Null) { - char c = '\0'; - ASSERT_THAT(open(&c, O_RDONLY), SyscallFailsWithErrno(ENOENT)); -} - -// NOTE(b/119785738): While the man pages specify that this behavior should be -// undefined, Linux truncates the file on opening read only if we have write -// permission, so we will too. -TEST_F(OpenTest, CanTruncateReadOnly) { - const FileDescriptor fd1 = - ASSERT_NO_ERRNO_AND_VALUE(Open(test_file_name_, O_RDONLY | O_TRUNC)); - - struct stat stat; - EXPECT_THAT(fstat(fd1.get(), &stat), SyscallSucceeds()); - EXPECT_EQ(stat.st_size, 0); -} - -// If we don't have read permission on the file, opening with -// O_TRUNC should fail. -TEST_F(OpenTest, CanTruncateReadOnlyNoWritePermission_NoRandomSave) { - // Drop capabilities that allow us to override file permissions. - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); - - const DisableSave ds; // Permissions are dropped. - ASSERT_THAT(chmod(test_file_name_.c_str(), S_IRUSR | S_IRGRP), - SyscallSucceeds()); - - ASSERT_THAT(open(test_file_name_.c_str(), O_RDONLY | O_TRUNC), - SyscallFailsWithErrno(EACCES)); - - const FileDescriptor fd1 = - ASSERT_NO_ERRNO_AND_VALUE(Open(test_file_name_, O_RDONLY)); - - struct stat stat; - EXPECT_THAT(fstat(fd1.get(), &stat), SyscallSucceeds()); - EXPECT_EQ(stat.st_size, test_data_.size()); -} - -// If we don't have read permission but have write permission, opening O_WRONLY -// and O_TRUNC should succeed. -TEST_F(OpenTest, CanTruncateWriteOnlyNoReadPermission_NoRandomSave) { - const DisableSave ds; // Permissions are dropped. - - EXPECT_THAT(fchmod(test_file_fd_.get(), S_IWUSR | S_IWGRP), - SyscallSucceeds()); - - const FileDescriptor fd1 = - ASSERT_NO_ERRNO_AND_VALUE(Open(test_file_name_, O_WRONLY | O_TRUNC)); - - EXPECT_THAT(fchmod(test_file_fd_.get(), S_IRUSR | S_IRGRP), - SyscallSucceeds()); - - const FileDescriptor fd2 = - ASSERT_NO_ERRNO_AND_VALUE(Open(test_file_name_, O_RDONLY)); - - struct stat stat; - EXPECT_THAT(fstat(fd2.get(), &stat), SyscallSucceeds()); - EXPECT_EQ(stat.st_size, 0); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/open_create.cc b/test/syscalls/linux/open_create.cc deleted file mode 100644 index 902d0a0dc..000000000 --- a/test/syscalls/linux/open_create.cc +++ /dev/null @@ -1,155 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <fcntl.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "test/syscalls/linux/temp_umask.h" -#include "test/util/capability_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/fs_util.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { -TEST(CreateTest, TmpFile) { - int fd; - EXPECT_THAT(fd = open(JoinPath(GetAbsoluteTestTmpdir(), "a").c_str(), - O_RDWR | O_CREAT, 0666), - SyscallSucceeds()); - EXPECT_THAT(close(fd), SyscallSucceeds()); -} - -TEST(CreateTest, ExistingFile) { - int fd; - EXPECT_THAT( - fd = open(JoinPath(GetAbsoluteTestTmpdir(), "ExistingFile").c_str(), - O_RDWR | O_CREAT, 0666), - SyscallSucceeds()); - EXPECT_THAT(close(fd), SyscallSucceeds()); - - EXPECT_THAT( - fd = open(JoinPath(GetAbsoluteTestTmpdir(), "ExistingFile").c_str(), - O_RDWR | O_CREAT, 0666), - SyscallSucceeds()); - EXPECT_THAT(close(fd), SyscallSucceeds()); -} - -TEST(CreateTest, CreateAtFile) { - int dirfd; - EXPECT_THAT(dirfd = open(GetAbsoluteTestTmpdir().c_str(), O_DIRECTORY, 0666), - SyscallSucceeds()); - EXPECT_THAT(openat(dirfd, "CreateAtFile", O_RDWR | O_CREAT, 0666), - SyscallSucceeds()); - EXPECT_THAT(close(dirfd), SyscallSucceeds()); -} - -TEST(CreateTest, HonorsUmask_NoRandomSave) { - const DisableSave ds; // file cannot be re-opened as writable. - TempUmask mask(0222); - int fd; - ASSERT_THAT( - fd = open(JoinPath(GetAbsoluteTestTmpdir(), "UmaskedFile").c_str(), - O_RDWR | O_CREAT, 0666), - SyscallSucceeds()); - struct stat statbuf; - ASSERT_THAT(fstat(fd, &statbuf), SyscallSucceeds()); - EXPECT_EQ(0444, statbuf.st_mode & 0777); - EXPECT_THAT(close(fd), SyscallSucceeds()); -} - -TEST(CreateTest, CreateExclusively) { - std::string filename = NewTempAbsPath(); - - int fd; - ASSERT_THAT(fd = open(filename.c_str(), O_CREAT | O_RDWR, 0644), - SyscallSucceeds()); - EXPECT_THAT(close(fd), SyscallSucceeds()); - - EXPECT_THAT(open(filename.c_str(), O_CREAT | O_EXCL | O_RDWR, 0644), - SyscallFailsWithErrno(EEXIST)); -} - -TEST(CreateTeast, CreatWithOTrunc) { - std::string dirpath = JoinPath(GetAbsoluteTestTmpdir(), "truncd"); - ASSERT_THAT(mkdir(dirpath.c_str(), 0777), SyscallSucceeds()); - ASSERT_THAT(open(dirpath.c_str(), O_CREAT | O_TRUNC, 0666), - SyscallFailsWithErrno(EISDIR)); -} - -TEST(CreateTeast, CreatDirWithOTruncAndReadOnly) { - std::string dirpath = JoinPath(GetAbsoluteTestTmpdir(), "truncd"); - ASSERT_THAT(mkdir(dirpath.c_str(), 0777), SyscallSucceeds()); - ASSERT_THAT(open(dirpath.c_str(), O_CREAT | O_TRUNC | O_RDONLY, 0666), - SyscallFailsWithErrno(EISDIR)); -} - -TEST(CreateTeast, CreatFileWithOTruncAndReadOnly) { - std::string dirpath = JoinPath(GetAbsoluteTestTmpdir(), "truncfile"); - int dirfd; - ASSERT_THAT(dirfd = open(dirpath.c_str(), O_RDWR | O_CREAT, 0666), - SyscallSucceeds()); - ASSERT_THAT(open(dirpath.c_str(), O_CREAT | O_TRUNC | O_RDONLY, 0666), - SyscallSucceeds()); - ASSERT_THAT(close(dirfd), SyscallSucceeds()); -} - -TEST(CreateTest, CreateFailsOnUnpermittedDir) { - // Make sure we don't have CAP_DAC_OVERRIDE, since that allows the user to - // always override directory permissions. - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); - ASSERT_THAT(open("/foo", O_CREAT | O_RDWR, 0644), - SyscallFailsWithErrno(EACCES)); -} - -TEST(CreateTest, CreateFailsOnDirWithoutWritePerms) { - // Make sure we don't have CAP_DAC_OVERRIDE, since that allows the user to - // always override directory permissions. - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); - auto parent = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateDirWith(GetAbsoluteTestTmpdir(), 0555)); - auto file = JoinPath(parent.path(), "foo"); - ASSERT_THAT(open(file.c_str(), O_CREAT | O_RDWR, 0644), - SyscallFailsWithErrno(EACCES)); -} - -// A file originally created RW, but opened RO can later be opened RW. -// Regression test for b/65385065. -TEST(CreateTest, OpenCreateROThenRW) { - TempPath file(NewTempAbsPath()); - - // Create a RW file, but only open it RO. - FileDescriptor fd1 = ASSERT_NO_ERRNO_AND_VALUE( - Open(file.path(), O_CREAT | O_EXCL | O_RDONLY, 0644)); - - // Now get a RW FD. - FileDescriptor fd2 = ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR)); - - // fd1 is not writable, but fd2 is. - char c = 'a'; - EXPECT_THAT(WriteFd(fd1.get(), &c, 1), SyscallFailsWithErrno(EBADF)); - EXPECT_THAT(WriteFd(fd2.get(), &c, 1), SyscallSucceedsWithValue(1)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/packet_socket.cc b/test/syscalls/linux/packet_socket.cc deleted file mode 100644 index 92ae55eec..000000000 --- a/test/syscalls/linux/packet_socket.cc +++ /dev/null @@ -1,322 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <arpa/inet.h> -#include <linux/capability.h> -#include <linux/if_arp.h> -#include <linux/if_packet.h> -#include <net/ethernet.h> -#include <netinet/in.h> -#include <netinet/ip.h> -#include <netinet/udp.h> -#include <poll.h> -#include <sys/ioctl.h> -#include <sys/socket.h> -#include <sys/types.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "absl/base/internal/endian.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/capability_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/test_util.h" - -// Some of these tests involve sending packets via AF_PACKET sockets and the -// loopback interface. Because AF_PACKET circumvents so much of the networking -// stack, Linux sees these packets as "martian", i.e. they claim to be to/from -// localhost but don't have the usual associated data. Thus Linux drops them by -// default. You can see where this happens by following the code at: -// -// - net/ipv4/ip_input.c:ip_rcv_finish, which calls -// - net/ipv4/route.c:ip_route_input_noref, which calls -// - net/ipv4/route.c:ip_route_input_slow, which finds and drops martian -// packets. -// -// To tell Linux not to drop these packets, you need to tell it to accept our -// funny packets (which are completely valid and correct, but lack associated -// in-kernel data because we use AF_PACKET): -// -// echo 1 >> /proc/sys/net/ipv4/conf/lo/accept_local -// echo 1 >> /proc/sys/net/ipv4/conf/lo/route_localnet -// -// These tests require CAP_NET_RAW to run. - -// TODO(gvisor.dev/issue/173): gVisor support. - -namespace gvisor { -namespace testing { - -namespace { - -using ::testing::AnyOf; -using ::testing::Eq; - -constexpr char kMessage[] = "soweoneul malhaebwa"; -constexpr in_port_t kPort = 0x409c; // htons(40000) - -// -// "Cooked" tests. Cooked AF_PACKET sockets do not contain link layer -// headers, and provide link layer destination/source information via a -// returned struct sockaddr_ll. -// - -// Send kMessage via sock to loopback -void SendUDPMessage(int sock) { - struct sockaddr_in dest = {}; - dest.sin_port = kPort; - dest.sin_addr.s_addr = htonl(INADDR_LOOPBACK); - dest.sin_family = AF_INET; - EXPECT_THAT(sendto(sock, kMessage, sizeof(kMessage), 0, - reinterpret_cast<struct sockaddr*>(&dest), sizeof(dest)), - SyscallSucceedsWithValue(sizeof(kMessage))); -} - -// Send an IP packet and make sure ETH_P_<something else> doesn't pick it up. -TEST(BasicCookedPacketTest, WrongType) { - if (!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))) { - ASSERT_THAT(socket(AF_PACKET, SOCK_DGRAM, ETH_P_PUP), - SyscallFailsWithErrno(EPERM)); - GTEST_SKIP(); - } - - FileDescriptor sock = ASSERT_NO_ERRNO_AND_VALUE( - Socket(AF_PACKET, SOCK_DGRAM, htons(ETH_P_PUP))); - - // Let's use a simple IP payload: a UDP datagram. - FileDescriptor udp_sock = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_DGRAM, 0)); - SendUDPMessage(udp_sock.get()); - - // Wait and make sure the socket never becomes readable. - struct pollfd pfd = {}; - pfd.fd = sock.get(); - pfd.events = POLLIN; - EXPECT_THAT(RetryEINTR(poll)(&pfd, 1, 1000), SyscallSucceedsWithValue(0)); -} - -// Tests for "cooked" (SOCK_DGRAM) packet(7) sockets. -class CookedPacketTest : public ::testing::TestWithParam<int> { - protected: - // Creates a socket to be used in tests. - void SetUp() override; - - // Closes the socket created by SetUp(). - void TearDown() override; - - // Gets the device index of the loopback device. - int GetLoopbackIndex(); - - // The socket used for both reading and writing. - int socket_; -}; - -void CookedPacketTest::SetUp() { - if (!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))) { - ASSERT_THAT(socket(AF_PACKET, SOCK_DGRAM, htons(GetParam())), - SyscallFailsWithErrno(EPERM)); - GTEST_SKIP(); - } - - if (!IsRunningOnGvisor()) { - FileDescriptor acceptLocal = ASSERT_NO_ERRNO_AND_VALUE( - Open("/proc/sys/net/ipv4/conf/lo/accept_local", O_RDONLY)); - FileDescriptor routeLocalnet = ASSERT_NO_ERRNO_AND_VALUE( - Open("/proc/sys/net/ipv4/conf/lo/route_localnet", O_RDONLY)); - char enabled; - ASSERT_THAT(read(acceptLocal.get(), &enabled, 1), - SyscallSucceedsWithValue(1)); - ASSERT_EQ(enabled, '1'); - ASSERT_THAT(read(routeLocalnet.get(), &enabled, 1), - SyscallSucceedsWithValue(1)); - ASSERT_EQ(enabled, '1'); - } - - ASSERT_THAT(socket_ = socket(AF_PACKET, SOCK_DGRAM, htons(GetParam())), - SyscallSucceeds()); -} - -void CookedPacketTest::TearDown() { - // TearDown will be run even if we skip the test. - if (ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))) { - EXPECT_THAT(close(socket_), SyscallSucceeds()); - } -} - -int CookedPacketTest::GetLoopbackIndex() { - struct ifreq ifr; - snprintf(ifr.ifr_name, IFNAMSIZ, "lo"); - EXPECT_THAT(ioctl(socket_, SIOCGIFINDEX, &ifr), SyscallSucceeds()); - EXPECT_NE(ifr.ifr_ifindex, 0); - return ifr.ifr_ifindex; -} - -// Receive via a packet socket. -TEST_P(CookedPacketTest, Receive) { - // Let's use a simple IP payload: a UDP datagram. - FileDescriptor udp_sock = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_DGRAM, 0)); - SendUDPMessage(udp_sock.get()); - - // Wait for the socket to become readable. - struct pollfd pfd = {}; - pfd.fd = socket_; - pfd.events = POLLIN; - EXPECT_THAT(RetryEINTR(poll)(&pfd, 1, 2000), SyscallSucceedsWithValue(1)); - - // Read and verify the data. - constexpr size_t packet_size = - sizeof(struct iphdr) + sizeof(struct udphdr) + sizeof(kMessage); - char buf[64]; - struct sockaddr_ll src = {}; - socklen_t src_len = sizeof(src); - ASSERT_THAT(recvfrom(socket_, buf, sizeof(buf), 0, - reinterpret_cast<struct sockaddr*>(&src), &src_len), - SyscallSucceedsWithValue(packet_size)); - // sockaddr_ll ends with an 8 byte physical address field, but ethernet - // addresses only use 6 bytes. Linux used to return sizeof(sockaddr_ll)-2 - // here, but since commit b2cf86e1563e33a14a1c69b3e508d15dc12f804c returns - // sizeof(sockaddr_ll). - ASSERT_THAT(src_len, AnyOf(Eq(sizeof(src)), Eq(sizeof(src) - 2))); - - // TODO(b/129292371): Verify protocol once we return it. - // Verify the source address. - EXPECT_EQ(src.sll_family, AF_PACKET); - EXPECT_EQ(src.sll_ifindex, GetLoopbackIndex()); - EXPECT_EQ(src.sll_halen, ETH_ALEN); - // This came from the loopback device, so the address is all 0s. - for (int i = 0; i < src.sll_halen; i++) { - EXPECT_EQ(src.sll_addr[i], 0); - } - - // Verify the IP header. We memcpy to deal with pointer aligment. - struct iphdr ip = {}; - memcpy(&ip, buf, sizeof(ip)); - EXPECT_EQ(ip.ihl, 5); - EXPECT_EQ(ip.version, 4); - EXPECT_EQ(ip.tot_len, htons(packet_size)); - EXPECT_EQ(ip.protocol, IPPROTO_UDP); - EXPECT_EQ(ip.daddr, htonl(INADDR_LOOPBACK)); - EXPECT_EQ(ip.saddr, htonl(INADDR_LOOPBACK)); - - // Verify the UDP header. We memcpy to deal with pointer aligment. - struct udphdr udp = {}; - memcpy(&udp, buf + sizeof(iphdr), sizeof(udp)); - EXPECT_EQ(udp.dest, kPort); - EXPECT_EQ(udp.len, htons(sizeof(udphdr) + sizeof(kMessage))); - - // Verify the payload. - char* payload = reinterpret_cast<char*>(buf + sizeof(iphdr) + sizeof(udphdr)); - EXPECT_EQ(strncmp(payload, kMessage, sizeof(kMessage)), 0); -} - -// Send via a packet socket. -TEST_P(CookedPacketTest, Send) { - // TODO(b/129292371): Remove once we support packet socket writing. - SKIP_IF(IsRunningOnGvisor()); - - // Let's send a UDP packet and receive it using a regular UDP socket. - FileDescriptor udp_sock = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_DGRAM, 0)); - struct sockaddr_in bind_addr = {}; - bind_addr.sin_family = AF_INET; - bind_addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK); - bind_addr.sin_port = kPort; - ASSERT_THAT( - bind(udp_sock.get(), reinterpret_cast<struct sockaddr*>(&bind_addr), - sizeof(bind_addr)), - SyscallSucceeds()); - - // Set up the destination physical address. - struct sockaddr_ll dest = {}; - dest.sll_family = AF_PACKET; - dest.sll_halen = ETH_ALEN; - dest.sll_ifindex = GetLoopbackIndex(); - dest.sll_protocol = htons(ETH_P_IP); - // We're sending to the loopback device, so the address is all 0s. - memset(dest.sll_addr, 0x00, ETH_ALEN); - - // Set up the IP header. - struct iphdr iphdr = {0}; - iphdr.ihl = 5; - iphdr.version = 4; - iphdr.tos = 0; - iphdr.tot_len = - htons(sizeof(struct iphdr) + sizeof(struct udphdr) + sizeof(kMessage)); - // Get a pseudo-random ID. If we clash with an in-use ID the test will fail, - // but we have no way of getting an ID we know to be good. - srand(*reinterpret_cast<unsigned int*>(&iphdr)); - iphdr.id = rand(); - // Linux sets this bit ("do not fragment") for small packets. - iphdr.frag_off = 1 << 6; - iphdr.ttl = 64; - iphdr.protocol = IPPROTO_UDP; - iphdr.daddr = htonl(INADDR_LOOPBACK); - iphdr.saddr = htonl(INADDR_LOOPBACK); - iphdr.check = IPChecksum(iphdr); - - // Set up the UDP header. - struct udphdr udphdr = {}; - udphdr.source = kPort; - udphdr.dest = kPort; - udphdr.len = htons(sizeof(udphdr) + sizeof(kMessage)); - udphdr.check = UDPChecksum(iphdr, udphdr, kMessage, sizeof(kMessage)); - - // Copy both headers and the payload into our packet buffer. - char send_buf[sizeof(iphdr) + sizeof(udphdr) + sizeof(kMessage)]; - memcpy(send_buf, &iphdr, sizeof(iphdr)); - memcpy(send_buf + sizeof(iphdr), &udphdr, sizeof(udphdr)); - memcpy(send_buf + sizeof(iphdr) + sizeof(udphdr), kMessage, sizeof(kMessage)); - - // Send it. - ASSERT_THAT(sendto(socket_, send_buf, sizeof(send_buf), 0, - reinterpret_cast<struct sockaddr*>(&dest), sizeof(dest)), - SyscallSucceedsWithValue(sizeof(send_buf))); - - // Wait for the packet to become available on both sockets. - struct pollfd pfd = {}; - pfd.fd = udp_sock.get(); - pfd.events = POLLIN; - ASSERT_THAT(RetryEINTR(poll)(&pfd, 1, 5000), SyscallSucceedsWithValue(1)); - pfd.fd = socket_; - pfd.events = POLLIN; - ASSERT_THAT(RetryEINTR(poll)(&pfd, 1, 5000), SyscallSucceedsWithValue(1)); - - // Receive on the packet socket. - char recv_buf[sizeof(send_buf)]; - ASSERT_THAT(recv(socket_, recv_buf, sizeof(recv_buf), 0), - SyscallSucceedsWithValue(sizeof(recv_buf))); - ASSERT_EQ(memcmp(recv_buf, send_buf, sizeof(send_buf)), 0); - - // Receive on the UDP socket. - struct sockaddr_in src; - socklen_t src_len = sizeof(src); - ASSERT_THAT(recvfrom(udp_sock.get(), recv_buf, sizeof(recv_buf), MSG_DONTWAIT, - reinterpret_cast<struct sockaddr*>(&src), &src_len), - SyscallSucceedsWithValue(sizeof(kMessage))); - // Check src and payload. - EXPECT_EQ(strncmp(recv_buf, kMessage, sizeof(kMessage)), 0); - EXPECT_EQ(src.sin_family, AF_INET); - EXPECT_EQ(src.sin_port, kPort); - EXPECT_EQ(src.sin_addr.s_addr, htonl(INADDR_LOOPBACK)); -} - -INSTANTIATE_TEST_SUITE_P(AllInetTests, CookedPacketTest, - ::testing::Values(ETH_P_IP, ETH_P_ALL)); - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/packet_socket_raw.cc b/test/syscalls/linux/packet_socket_raw.cc deleted file mode 100644 index d258d353c..000000000 --- a/test/syscalls/linux/packet_socket_raw.cc +++ /dev/null @@ -1,318 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <arpa/inet.h> -#include <linux/capability.h> -#include <linux/if_arp.h> -#include <linux/if_packet.h> -#include <net/ethernet.h> -#include <netinet/in.h> -#include <netinet/ip.h> -#include <netinet/udp.h> -#include <poll.h> -#include <sys/ioctl.h> -#include <sys/socket.h> -#include <sys/types.h> -#include <unistd.h> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "absl/base/internal/endian.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/capability_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/test_util.h" - -// Some of these tests involve sending packets via AF_PACKET sockets and the -// loopback interface. Because AF_PACKET circumvents so much of the networking -// stack, Linux sees these packets as "martian", i.e. they claim to be to/from -// localhost but don't have the usual associated data. Thus Linux drops them by -// default. You can see where this happens by following the code at: -// -// - net/ipv4/ip_input.c:ip_rcv_finish, which calls -// - net/ipv4/route.c:ip_route_input_noref, which calls -// - net/ipv4/route.c:ip_route_input_slow, which finds and drops martian -// packets. -// -// To tell Linux not to drop these packets, you need to tell it to accept our -// funny packets (which are completely valid and correct, but lack associated -// in-kernel data because we use AF_PACKET): -// -// echo 1 >> /proc/sys/net/ipv4/conf/lo/accept_local -// echo 1 >> /proc/sys/net/ipv4/conf/lo/route_localnet -// -// These tests require CAP_NET_RAW to run. - -// TODO(gvisor.dev/issue/173): gVisor support. - -namespace gvisor { -namespace testing { - -namespace { - -using ::testing::AnyOf; -using ::testing::Eq; - -constexpr char kMessage[] = "soweoneul malhaebwa"; -constexpr in_port_t kPort = 0x409c; // htons(40000) - -// Send kMessage via sock to loopback -void SendUDPMessage(int sock) { - struct sockaddr_in dest = {}; - dest.sin_port = kPort; - dest.sin_addr.s_addr = htonl(INADDR_LOOPBACK); - dest.sin_family = AF_INET; - EXPECT_THAT(sendto(sock, kMessage, sizeof(kMessage), 0, - reinterpret_cast<struct sockaddr*>(&dest), sizeof(dest)), - SyscallSucceedsWithValue(sizeof(kMessage))); -} - -// -// Raw tests. Packets sent with raw AF_PACKET sockets always include link layer -// headers. -// - -// Tests for "raw" (SOCK_RAW) packet(7) sockets. -class RawPacketTest : public ::testing::TestWithParam<int> { - protected: - // Creates a socket to be used in tests. - void SetUp() override; - - // Closes the socket created by SetUp(). - void TearDown() override; - - // Gets the device index of the loopback device. - int GetLoopbackIndex(); - - // The socket used for both reading and writing. - int socket_; -}; - -void RawPacketTest::SetUp() { - if (!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))) { - ASSERT_THAT(socket(AF_PACKET, SOCK_RAW, htons(GetParam())), - SyscallFailsWithErrno(EPERM)); - GTEST_SKIP(); - } - - if (!IsRunningOnGvisor()) { - FileDescriptor acceptLocal = ASSERT_NO_ERRNO_AND_VALUE( - Open("/proc/sys/net/ipv4/conf/lo/accept_local", O_RDONLY)); - FileDescriptor routeLocalnet = ASSERT_NO_ERRNO_AND_VALUE( - Open("/proc/sys/net/ipv4/conf/lo/route_localnet", O_RDONLY)); - char enabled; - ASSERT_THAT(read(acceptLocal.get(), &enabled, 1), - SyscallSucceedsWithValue(1)); - ASSERT_EQ(enabled, '1'); - ASSERT_THAT(read(routeLocalnet.get(), &enabled, 1), - SyscallSucceedsWithValue(1)); - ASSERT_EQ(enabled, '1'); - } - - ASSERT_THAT(socket_ = socket(AF_PACKET, SOCK_RAW, htons(GetParam())), - SyscallSucceeds()); -} - -void RawPacketTest::TearDown() { - // TearDown will be run even if we skip the test. - if (ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))) { - EXPECT_THAT(close(socket_), SyscallSucceeds()); - } -} - -int RawPacketTest::GetLoopbackIndex() { - struct ifreq ifr; - snprintf(ifr.ifr_name, IFNAMSIZ, "lo"); - EXPECT_THAT(ioctl(socket_, SIOCGIFINDEX, &ifr), SyscallSucceeds()); - EXPECT_NE(ifr.ifr_ifindex, 0); - return ifr.ifr_ifindex; -} - -// Receive via a packet socket. -TEST_P(RawPacketTest, Receive) { - // Let's use a simple IP payload: a UDP datagram. - FileDescriptor udp_sock = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_DGRAM, 0)); - SendUDPMessage(udp_sock.get()); - - // Wait for the socket to become readable. - struct pollfd pfd = {}; - pfd.fd = socket_; - pfd.events = POLLIN; - EXPECT_THAT(RetryEINTR(poll)(&pfd, 1, 2000), SyscallSucceedsWithValue(1)); - - // Read and verify the data. - constexpr size_t packet_size = sizeof(struct ethhdr) + sizeof(struct iphdr) + - sizeof(struct udphdr) + sizeof(kMessage); - char buf[64]; - struct sockaddr_ll src = {}; - socklen_t src_len = sizeof(src); - ASSERT_THAT(recvfrom(socket_, buf, sizeof(buf), 0, - reinterpret_cast<struct sockaddr*>(&src), &src_len), - SyscallSucceedsWithValue(packet_size)); - // sockaddr_ll ends with an 8 byte physical address field, but ethernet - // addresses only use 6 bytes. Linux used to return sizeof(sockaddr_ll)-2 - // here, but since commit b2cf86e1563e33a14a1c69b3e508d15dc12f804c returns - // sizeof(sockaddr_ll). - ASSERT_THAT(src_len, AnyOf(Eq(sizeof(src)), Eq(sizeof(src) - 2))); - - // TODO(b/129292371): Verify protocol once we return it. - // Verify the source address. - EXPECT_EQ(src.sll_family, AF_PACKET); - EXPECT_EQ(src.sll_ifindex, GetLoopbackIndex()); - EXPECT_EQ(src.sll_halen, ETH_ALEN); - // This came from the loopback device, so the address is all 0s. - for (int i = 0; i < src.sll_halen; i++) { - EXPECT_EQ(src.sll_addr[i], 0); - } - - // Verify the ethernet header. We memcpy to deal with pointer alignment. - struct ethhdr eth = {}; - memcpy(ð, buf, sizeof(eth)); - // The destination and source address should be 0, for loopback. - for (int i = 0; i < ETH_ALEN; i++) { - EXPECT_EQ(eth.h_dest[i], 0); - EXPECT_EQ(eth.h_source[i], 0); - } - EXPECT_EQ(eth.h_proto, htons(ETH_P_IP)); - - // Verify the IP header. We memcpy to deal with pointer aligment. - struct iphdr ip = {}; - memcpy(&ip, buf + sizeof(ethhdr), sizeof(ip)); - EXPECT_EQ(ip.ihl, 5); - EXPECT_EQ(ip.version, 4); - EXPECT_EQ(ip.tot_len, htons(packet_size - sizeof(eth))); - EXPECT_EQ(ip.protocol, IPPROTO_UDP); - EXPECT_EQ(ip.daddr, htonl(INADDR_LOOPBACK)); - EXPECT_EQ(ip.saddr, htonl(INADDR_LOOPBACK)); - - // Verify the UDP header. We memcpy to deal with pointer aligment. - struct udphdr udp = {}; - memcpy(&udp, buf + sizeof(eth) + sizeof(iphdr), sizeof(udp)); - EXPECT_EQ(udp.dest, kPort); - EXPECT_EQ(udp.len, htons(sizeof(udphdr) + sizeof(kMessage))); - - // Verify the payload. - char* payload = reinterpret_cast<char*>(buf + sizeof(eth) + sizeof(iphdr) + - sizeof(udphdr)); - EXPECT_EQ(strncmp(payload, kMessage, sizeof(kMessage)), 0); -} - -// Send via a packet socket. -TEST_P(RawPacketTest, Send) { - // TODO(b/129292371): Remove once we support packet socket writing. - SKIP_IF(IsRunningOnGvisor()); - - // Let's send a UDP packet and receive it using a regular UDP socket. - FileDescriptor udp_sock = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_DGRAM, 0)); - struct sockaddr_in bind_addr = {}; - bind_addr.sin_family = AF_INET; - bind_addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK); - bind_addr.sin_port = kPort; - ASSERT_THAT( - bind(udp_sock.get(), reinterpret_cast<struct sockaddr*>(&bind_addr), - sizeof(bind_addr)), - SyscallSucceeds()); - - // Set up the destination physical address. - struct sockaddr_ll dest = {}; - dest.sll_family = AF_PACKET; - dest.sll_halen = ETH_ALEN; - dest.sll_ifindex = GetLoopbackIndex(); - dest.sll_protocol = htons(ETH_P_IP); - // We're sending to the loopback device, so the address is all 0s. - memset(dest.sll_addr, 0x00, ETH_ALEN); - - // Set up the ethernet header. The kernel takes care of the footer. - // We're sending to and from hardware address 0 (loopback). - struct ethhdr eth = {}; - eth.h_proto = htons(ETH_P_IP); - - // Set up the IP header. - struct iphdr iphdr = {}; - iphdr.ihl = 5; - iphdr.version = 4; - iphdr.tos = 0; - iphdr.tot_len = - htons(sizeof(struct iphdr) + sizeof(struct udphdr) + sizeof(kMessage)); - // Get a pseudo-random ID. If we clash with an in-use ID the test will fail, - // but we have no way of getting an ID we know to be good. - srand(*reinterpret_cast<unsigned int*>(&iphdr)); - iphdr.id = rand(); - // Linux sets this bit ("do not fragment") for small packets. - iphdr.frag_off = 1 << 6; - iphdr.ttl = 64; - iphdr.protocol = IPPROTO_UDP; - iphdr.daddr = htonl(INADDR_LOOPBACK); - iphdr.saddr = htonl(INADDR_LOOPBACK); - iphdr.check = IPChecksum(iphdr); - - // Set up the UDP header. - struct udphdr udphdr = {}; - udphdr.source = kPort; - udphdr.dest = kPort; - udphdr.len = htons(sizeof(udphdr) + sizeof(kMessage)); - udphdr.check = UDPChecksum(iphdr, udphdr, kMessage, sizeof(kMessage)); - - // Copy both headers and the payload into our packet buffer. - char - send_buf[sizeof(eth) + sizeof(iphdr) + sizeof(udphdr) + sizeof(kMessage)]; - memcpy(send_buf, ð, sizeof(eth)); - memcpy(send_buf + sizeof(ethhdr), &iphdr, sizeof(iphdr)); - memcpy(send_buf + sizeof(ethhdr) + sizeof(iphdr), &udphdr, sizeof(udphdr)); - memcpy(send_buf + sizeof(ethhdr) + sizeof(iphdr) + sizeof(udphdr), kMessage, - sizeof(kMessage)); - - // Send it. - ASSERT_THAT(sendto(socket_, send_buf, sizeof(send_buf), 0, - reinterpret_cast<struct sockaddr*>(&dest), sizeof(dest)), - SyscallSucceedsWithValue(sizeof(send_buf))); - - // Wait for the packet to become available on both sockets. - struct pollfd pfd = {}; - pfd.fd = udp_sock.get(); - pfd.events = POLLIN; - ASSERT_THAT(RetryEINTR(poll)(&pfd, 1, 5000), SyscallSucceedsWithValue(1)); - pfd.fd = socket_; - pfd.events = POLLIN; - ASSERT_THAT(RetryEINTR(poll)(&pfd, 1, 5000), SyscallSucceedsWithValue(1)); - - // Receive on the packet socket. - char recv_buf[sizeof(send_buf)]; - ASSERT_THAT(recv(socket_, recv_buf, sizeof(recv_buf), 0), - SyscallSucceedsWithValue(sizeof(recv_buf))); - ASSERT_EQ(memcmp(recv_buf, send_buf, sizeof(send_buf)), 0); - - // Receive on the UDP socket. - struct sockaddr_in src; - socklen_t src_len = sizeof(src); - ASSERT_THAT(recvfrom(udp_sock.get(), recv_buf, sizeof(recv_buf), MSG_DONTWAIT, - reinterpret_cast<struct sockaddr*>(&src), &src_len), - SyscallSucceedsWithValue(sizeof(kMessage))); - // Check src and payload. - EXPECT_EQ(strncmp(recv_buf, kMessage, sizeof(kMessage)), 0); - EXPECT_EQ(src.sin_family, AF_INET); - EXPECT_EQ(src.sin_port, kPort); - EXPECT_EQ(src.sin_addr.s_addr, htonl(INADDR_LOOPBACK)); -} - -INSTANTIATE_TEST_SUITE_P(AllInetTests, RawPacketTest, - ::testing::Values(ETH_P_IP, ETH_P_ALL)); - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/partial_bad_buffer.cc b/test/syscalls/linux/partial_bad_buffer.cc deleted file mode 100644 index df7129acc..000000000 --- a/test/syscalls/linux/partial_bad_buffer.cc +++ /dev/null @@ -1,405 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <fcntl.h> -#include <netinet/in.h> -#include <netinet/tcp.h> -#include <sys/mman.h> -#include <sys/socket.h> -#include <sys/stat.h> -#include <sys/syscall.h> -#include <sys/types.h> -#include <sys/uio.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "absl/time/clock.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/fs_util.h" -#include "test/util/posix_error.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -using ::testing::Gt; - -namespace gvisor { -namespace testing { - -namespace { - -constexpr char kMessage[] = "hello world"; - -// PartialBadBufferTest checks the result of various IO syscalls when passed a -// buffer that does not have the space specified in the syscall (most of it is -// PROT_NONE). Linux is annoyingly inconsistent among different syscalls, so we -// test all of them. -class PartialBadBufferTest : public ::testing::Test { - protected: - void SetUp() override { - // Create and open a directory for getdents cases. - directory_ = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - ASSERT_THAT( - directory_fd_ = open(directory_.path().c_str(), O_RDONLY | O_DIRECTORY), - SyscallSucceeds()); - - // Create and open a normal file, placing it in the directory - // so the getdents cases have some dirents. - name_ = JoinPath(directory_.path(), "a"); - ASSERT_THAT(fd_ = open(name_.c_str(), O_RDWR | O_CREAT, 0644), - SyscallSucceeds()); - - // Write some initial data. - size_t size = sizeof(kMessage) - 1; - EXPECT_THAT(WriteFd(fd_, &kMessage, size), SyscallSucceedsWithValue(size)); - ASSERT_THAT(lseek(fd_, 0, SEEK_SET), SyscallSucceeds()); - - // Map a useable buffer. - addr_ = mmap(0, 2 * kPageSize, PROT_READ | PROT_WRITE, - MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); - ASSERT_NE(addr_, MAP_FAILED); - char* buf = reinterpret_cast<char*>(addr_); - - // Guard page for our read to run into. - ASSERT_THAT(mprotect(reinterpret_cast<void*>(buf + kPageSize), kPageSize, - PROT_NONE), - SyscallSucceeds()); - - // Leave only one free byte in the buffer. - bad_buffer_ = buf + kPageSize - 1; - } - - off_t Size() { - struct stat st; - int rc = fstat(fd_, &st); - if (rc < 0) { - return static_cast<off_t>(rc); - } - return st.st_size; - } - - void TearDown() override { - EXPECT_THAT(munmap(addr_, 2 * kPageSize), SyscallSucceeds()) << addr_; - EXPECT_THAT(close(fd_), SyscallSucceeds()); - EXPECT_THAT(unlink(name_.c_str()), SyscallSucceeds()); - EXPECT_THAT(close(directory_fd_), SyscallSucceeds()); - } - - // Return buffer with n bytes of free space. - // N.B. this is the same buffer used to back bad_buffer_. - char* FreeBytes(size_t n) { - TEST_CHECK(n <= static_cast<size_t>(4096)); - return reinterpret_cast<char*>(addr_) + kPageSize - n; - } - - std::string name_; - int fd_; - TempPath directory_; - int directory_fd_; - void* addr_; - char* bad_buffer_; -}; - -// We do both "big" and "small" tests to try to hit the "zero copy" and -// non-"zero copy" paths, which have different code paths for handling faults. - -TEST_F(PartialBadBufferTest, ReadBig) { - EXPECT_THAT(RetryEINTR(read)(fd_, bad_buffer_, kPageSize), - SyscallSucceedsWithValue(1)); - EXPECT_EQ('h', bad_buffer_[0]); -} - -TEST_F(PartialBadBufferTest, ReadSmall) { - EXPECT_THAT(RetryEINTR(read)(fd_, bad_buffer_, 10), - SyscallSucceedsWithValue(1)); - EXPECT_EQ('h', bad_buffer_[0]); -} - -TEST_F(PartialBadBufferTest, PreadBig) { - EXPECT_THAT(RetryEINTR(pread)(fd_, bad_buffer_, kPageSize, 0), - SyscallSucceedsWithValue(1)); - EXPECT_EQ('h', bad_buffer_[0]); -} - -TEST_F(PartialBadBufferTest, PreadSmall) { - EXPECT_THAT(RetryEINTR(pread)(fd_, bad_buffer_, 10, 0), - SyscallSucceedsWithValue(1)); - EXPECT_EQ('h', bad_buffer_[0]); -} - -TEST_F(PartialBadBufferTest, ReadvBig) { - struct iovec vec; - vec.iov_base = bad_buffer_; - vec.iov_len = kPageSize; - - EXPECT_THAT(RetryEINTR(readv)(fd_, &vec, 1), SyscallSucceedsWithValue(1)); - EXPECT_EQ('h', bad_buffer_[0]); -} - -TEST_F(PartialBadBufferTest, ReadvSmall) { - struct iovec vec; - vec.iov_base = bad_buffer_; - vec.iov_len = 10; - - EXPECT_THAT(RetryEINTR(readv)(fd_, &vec, 1), SyscallSucceedsWithValue(1)); - EXPECT_EQ('h', bad_buffer_[0]); -} - -TEST_F(PartialBadBufferTest, PreadvBig) { - struct iovec vec; - vec.iov_base = bad_buffer_; - vec.iov_len = kPageSize; - - EXPECT_THAT(RetryEINTR(preadv)(fd_, &vec, 1, 0), SyscallSucceedsWithValue(1)); - EXPECT_EQ('h', bad_buffer_[0]); -} - -TEST_F(PartialBadBufferTest, PreadvSmall) { - struct iovec vec; - vec.iov_base = bad_buffer_; - vec.iov_len = 10; - - EXPECT_THAT(RetryEINTR(preadv)(fd_, &vec, 1, 0), SyscallSucceedsWithValue(1)); - EXPECT_EQ('h', bad_buffer_[0]); -} - -TEST_F(PartialBadBufferTest, WriteBig) { - off_t orig_size = Size(); - int n; - - ASSERT_THAT(lseek(fd_, orig_size, SEEK_SET), SyscallSucceeds()); - EXPECT_THAT( - (n = RetryEINTR(write)(fd_, bad_buffer_, kPageSize)), - AnyOf(SyscallFailsWithErrno(EFAULT), SyscallSucceedsWithValue(1))); - EXPECT_EQ(Size(), orig_size + (n >= 0 ? n : 0)); -} - -TEST_F(PartialBadBufferTest, WriteSmall) { - off_t orig_size = Size(); - int n; - - ASSERT_THAT(lseek(fd_, orig_size, SEEK_SET), SyscallSucceeds()); - EXPECT_THAT( - (n = RetryEINTR(write)(fd_, bad_buffer_, 10)), - AnyOf(SyscallFailsWithErrno(EFAULT), SyscallSucceedsWithValue(1))); - EXPECT_EQ(Size(), orig_size + (n >= 0 ? n : 0)); -} - -TEST_F(PartialBadBufferTest, PwriteBig) { - off_t orig_size = Size(); - int n; - - EXPECT_THAT( - (n = RetryEINTR(pwrite)(fd_, bad_buffer_, kPageSize, orig_size)), - AnyOf(SyscallFailsWithErrno(EFAULT), SyscallSucceedsWithValue(1))); - EXPECT_EQ(Size(), orig_size + (n >= 0 ? n : 0)); -} - -TEST_F(PartialBadBufferTest, PwriteSmall) { - off_t orig_size = Size(); - int n; - - EXPECT_THAT( - (n = RetryEINTR(pwrite)(fd_, bad_buffer_, 10, orig_size)), - AnyOf(SyscallFailsWithErrno(EFAULT), SyscallSucceedsWithValue(1))); - EXPECT_EQ(Size(), orig_size + (n >= 0 ? n : 0)); -} - -TEST_F(PartialBadBufferTest, WritevBig) { - struct iovec vec; - vec.iov_base = bad_buffer_; - vec.iov_len = kPageSize; - off_t orig_size = Size(); - int n; - - ASSERT_THAT(lseek(fd_, orig_size, SEEK_SET), SyscallSucceeds()); - EXPECT_THAT( - (n = RetryEINTR(writev)(fd_, &vec, 1)), - AnyOf(SyscallFailsWithErrno(EFAULT), SyscallSucceedsWithValue(1))); - EXPECT_EQ(Size(), orig_size + (n >= 0 ? n : 0)); -} - -TEST_F(PartialBadBufferTest, WritevSmall) { - struct iovec vec; - vec.iov_base = bad_buffer_; - vec.iov_len = 10; - off_t orig_size = Size(); - int n; - - ASSERT_THAT(lseek(fd_, orig_size, SEEK_SET), SyscallSucceeds()); - EXPECT_THAT( - (n = RetryEINTR(writev)(fd_, &vec, 1)), - AnyOf(SyscallFailsWithErrno(EFAULT), SyscallSucceedsWithValue(1))); - EXPECT_EQ(Size(), orig_size + (n >= 0 ? n : 0)); -} - -TEST_F(PartialBadBufferTest, PwritevBig) { - struct iovec vec; - vec.iov_base = bad_buffer_; - vec.iov_len = kPageSize; - off_t orig_size = Size(); - int n; - - EXPECT_THAT( - (n = RetryEINTR(pwritev)(fd_, &vec, 1, orig_size)), - AnyOf(SyscallFailsWithErrno(EFAULT), SyscallSucceedsWithValue(1))); - EXPECT_EQ(Size(), orig_size + (n >= 0 ? n : 0)); -} - -TEST_F(PartialBadBufferTest, PwritevSmall) { - struct iovec vec; - vec.iov_base = bad_buffer_; - vec.iov_len = 10; - off_t orig_size = Size(); - int n; - - EXPECT_THAT( - (n = RetryEINTR(pwritev)(fd_, &vec, 1, orig_size)), - AnyOf(SyscallFailsWithErrno(EFAULT), SyscallSucceedsWithValue(1))); - EXPECT_EQ(Size(), orig_size + (n >= 0 ? n : 0)); -} - -// getdents returns EFAULT when the you claim the buffer is large enough, but -// it actually isn't. -TEST_F(PartialBadBufferTest, GetdentsBig) { - EXPECT_THAT(RetryEINTR(syscall)(SYS_getdents64, directory_fd_, bad_buffer_, - kPageSize), - SyscallFailsWithErrno(EFAULT)); -} - -// getdents returns EINVAL when the you claim the buffer is too small. -TEST_F(PartialBadBufferTest, GetdentsSmall) { - EXPECT_THAT( - RetryEINTR(syscall)(SYS_getdents64, directory_fd_, bad_buffer_, 10), - SyscallFailsWithErrno(EINVAL)); -} - -// getdents will write entries into a buffer if there is space before it faults. -TEST_F(PartialBadBufferTest, GetdentsOneEntry) { - // 30 bytes is enough for one (small) entry. - char* buf = FreeBytes(30); - - EXPECT_THAT( - RetryEINTR(syscall)(SYS_getdents64, directory_fd_, buf, kPageSize), - SyscallSucceedsWithValue(Gt(0))); -} - -PosixErrorOr<sockaddr_storage> InetLoopbackAddr(int family) { - struct sockaddr_storage addr; - memset(&addr, 0, sizeof(addr)); - addr.ss_family = family; - switch (family) { - case AF_INET: - reinterpret_cast<struct sockaddr_in*>(&addr)->sin_addr.s_addr = - htonl(INADDR_LOOPBACK); - break; - case AF_INET6: - reinterpret_cast<struct sockaddr_in6*>(&addr)->sin6_addr = - in6addr_loopback; - break; - default: - return PosixError(EINVAL, - absl::StrCat("unknown socket family: ", family)); - } - return addr; -} - -// SendMsgTCP verifies that calling sendmsg with a bad address returns an -// EFAULT. It also verifies that passing a buffer which is made up of 2 -// pages one valid and one guard page succeeds as long as the write is -// for exactly the size of 1 page. -TEST_F(PartialBadBufferTest, SendMsgTCP) { - auto listen_socket = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)); - - // Initialize address to the loopback one. - sockaddr_storage addr = ASSERT_NO_ERRNO_AND_VALUE(InetLoopbackAddr(AF_INET)); - socklen_t addrlen = sizeof(addr); - - // Bind to some port then start listening. - ASSERT_THAT(bind(listen_socket.get(), - reinterpret_cast<struct sockaddr*>(&addr), addrlen), - SyscallSucceeds()); - - ASSERT_THAT(listen(listen_socket.get(), SOMAXCONN), SyscallSucceeds()); - - // Get the address we're listening on, then connect to it. We need to do this - // because we're allowing the stack to pick a port for us. - ASSERT_THAT(getsockname(listen_socket.get(), - reinterpret_cast<struct sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - - auto send_socket = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_STREAM, IPPROTO_TCP)); - - ASSERT_THAT( - RetryEINTR(connect)(send_socket.get(), - reinterpret_cast<struct sockaddr*>(&addr), addrlen), - SyscallSucceeds()); - - // Accept the connection. - auto recv_socket = - ASSERT_NO_ERRNO_AND_VALUE(Accept(listen_socket.get(), nullptr, nullptr)); - - // TODO(gvisor.dev/issue/674): Update this once Netstack matches linux - // behaviour on a setsockopt of SO_RCVBUF/SO_SNDBUF. - // - // Set SO_SNDBUF for socket to exactly kPageSize+1. - // - // gVisor does not double the value passed in SO_SNDBUF like linux does so we - // just increase it by 1 byte here for gVisor so that we can test writing 1 - // byte past the valid page and check that it triggers an EFAULT - // correctly. Otherwise in gVisor the sendmsg call will just return with no - // error with kPageSize bytes written successfully. - const uint32_t buf_size = kPageSize + 1; - ASSERT_THAT(setsockopt(send_socket.get(), SOL_SOCKET, SO_SNDBUF, &buf_size, - sizeof(buf_size)), - SyscallSucceedsWithValue(0)); - - struct msghdr hdr = {}; - struct iovec iov = {}; - iov.iov_base = bad_buffer_; - iov.iov_len = kPageSize; - hdr.msg_iov = &iov; - hdr.msg_iovlen = 1; - - ASSERT_THAT(RetryEINTR(sendmsg)(send_socket.get(), &hdr, 0), - SyscallFailsWithErrno(EFAULT)); - - // Now assert that writing kPageSize from addr_ succeeds. - iov.iov_base = addr_; - ASSERT_THAT(RetryEINTR(sendmsg)(send_socket.get(), &hdr, 0), - SyscallSucceedsWithValue(kPageSize)); - // Read all the data out so that we drain the socket SND_BUF on the sender. - std::vector<char> buffer(kPageSize); - ASSERT_THAT(RetryEINTR(read)(recv_socket.get(), buffer.data(), kPageSize), - SyscallSucceedsWithValue(kPageSize)); - - // Sleep for a shortwhile to ensure that we have time to process the - // ACKs. This is not strictly required unless running under gotsan which is a - // lot slower and can result in the next write to write only 1 byte instead of - // our intended kPageSize + 1. - absl::SleepFor(absl::Milliseconds(50)); - - // Now assert that writing > kPageSize results in EFAULT. - iov.iov_len = kPageSize + 1; - ASSERT_THAT(RetryEINTR(sendmsg)(send_socket.get(), &hdr, 0), - SyscallFailsWithErrno(EFAULT)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/pause.cc b/test/syscalls/linux/pause.cc deleted file mode 100644 index 8c05efd6f..000000000 --- a/test/syscalls/linux/pause.cc +++ /dev/null @@ -1,88 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <signal.h> -#include <sys/syscall.h> -#include <sys/types.h> -#include <unistd.h> - -#include <atomic> - -#include "gtest/gtest.h" -#include "absl/synchronization/mutex.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/util/signal_util.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -void NoopSignalHandler(int sig, siginfo_t* info, void* context) {} - -} // namespace - -TEST(PauseTest, OnlyReturnsWhenSignalHandled) { - struct sigaction sa; - sigfillset(&sa.sa_mask); - - // Ensure that SIGUSR1 is ignored. - sa.sa_handler = SIG_IGN; - ASSERT_THAT(sigaction(SIGUSR1, &sa, nullptr), SyscallSucceeds()); - - // Register a handler for SIGUSR2. - sa.sa_sigaction = NoopSignalHandler; - sa.sa_flags = SA_SIGINFO; - ASSERT_THAT(sigaction(SIGUSR2, &sa, nullptr), SyscallSucceeds()); - - // The child sets their own tid. - absl::Mutex mu; - pid_t child_tid = 0; - bool child_tid_available = false; - std::atomic<int> sent_signal{0}; - std::atomic<int> waking_signal{0}; - ScopedThread t([&] { - mu.Lock(); - child_tid = gettid(); - child_tid_available = true; - mu.Unlock(); - EXPECT_THAT(pause(), SyscallFailsWithErrno(EINTR)); - waking_signal.store(sent_signal.load()); - }); - mu.Lock(); - mu.Await(absl::Condition(&child_tid_available)); - mu.Unlock(); - - // Wait a bit to let the child enter pause(). - absl::SleepFor(absl::Seconds(3)); - - // The child should not be woken by SIGUSR1. - sent_signal.store(SIGUSR1); - ASSERT_THAT(tgkill(getpid(), child_tid, SIGUSR1), SyscallSucceeds()); - absl::SleepFor(absl::Seconds(3)); - - // The child should be woken by SIGUSR2. - sent_signal.store(SIGUSR2); - ASSERT_THAT(tgkill(getpid(), child_tid, SIGUSR2), SyscallSucceeds()); - absl::SleepFor(absl::Seconds(3)); - - EXPECT_EQ(SIGUSR2, waking_signal.load()); -} - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/pipe.cc b/test/syscalls/linux/pipe.cc deleted file mode 100644 index d8e19e910..000000000 --- a/test/syscalls/linux/pipe.cc +++ /dev/null @@ -1,663 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <fcntl.h> /* Obtain O_* constant definitions */ -#include <sys/ioctl.h> -#include <sys/uio.h> -#include <unistd.h> - -#include <vector> - -#include "gtest/gtest.h" -#include "absl/strings/str_cat.h" -#include "absl/synchronization/notification.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/util/file_descriptor.h" -#include "test/util/fs_util.h" -#include "test/util/posix_error.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -// Used as a non-zero sentinel value, below. -constexpr int kTestValue = 0x12345678; - -// Used for synchronization in race tests. -const absl::Duration syncDelay = absl::Seconds(2); - -struct PipeCreator { - std::string name_; - - // void (fds, is_blocking, is_namedpipe). - std::function<void(int[2], bool*, bool*)> create_; -}; - -class PipeTest : public ::testing::TestWithParam<PipeCreator> { - public: - static void SetUpTestSuite() { - // Tests intentionally generate SIGPIPE. - TEST_PCHECK(signal(SIGPIPE, SIG_IGN) != SIG_ERR); - } - - // Initializes rfd_ and wfd_ as a blocking pipe. - // - // The return value indicates success: the test should be skipped otherwise. - bool CreateBlocking() { return create(true); } - - // Initializes rfd_ and wfd_ as a non-blocking pipe. - // - // The return value is per CreateBlocking. - bool CreateNonBlocking() { return create(false); } - - // Returns true iff the pipe represents a named pipe. - bool IsNamedPipe() const { return named_pipe_; } - - int Size() const { - int s1 = fcntl(rfd_.get(), F_GETPIPE_SZ); - int s2 = fcntl(wfd_.get(), F_GETPIPE_SZ); - EXPECT_GT(s1, 0); - EXPECT_GT(s2, 0); - EXPECT_EQ(s1, s2); - return s1; - } - - static void TearDownTestSuite() { - TEST_PCHECK(signal(SIGPIPE, SIG_DFL) != SIG_ERR); - } - - private: - bool create(bool wants_blocking) { - // Generate the pipe. - int fds[2] = {-1, -1}; - bool is_blocking = false; - GetParam().create_(fds, &is_blocking, &named_pipe_); - if (fds[0] < 0 || fds[1] < 0) { - return false; - } - - // Save descriptors. - rfd_.reset(fds[0]); - wfd_.reset(fds[1]); - - // Adjust blocking, if needed. - if (!is_blocking && wants_blocking) { - // Clear the blocking flag. - EXPECT_THAT(fcntl(fds[0], F_SETFL, 0), SyscallSucceeds()); - EXPECT_THAT(fcntl(fds[1], F_SETFL, 0), SyscallSucceeds()); - } else if (is_blocking && !wants_blocking) { - // Set the descriptors to blocking. - EXPECT_THAT(fcntl(fds[0], F_SETFL, O_NONBLOCK), SyscallSucceeds()); - EXPECT_THAT(fcntl(fds[1], F_SETFL, O_NONBLOCK), SyscallSucceeds()); - } - - return true; - } - - protected: - FileDescriptor rfd_; - FileDescriptor wfd_; - - private: - bool named_pipe_ = false; -}; - -TEST_P(PipeTest, Inode) { - SKIP_IF(!CreateBlocking()); - - // Ensure that the inode number is the same for each end. - struct stat rst; - ASSERT_THAT(fstat(rfd_.get(), &rst), SyscallSucceeds()); - struct stat wst; - ASSERT_THAT(fstat(wfd_.get(), &wst), SyscallSucceeds()); - EXPECT_EQ(rst.st_ino, wst.st_ino); -} - -TEST_P(PipeTest, Permissions) { - SKIP_IF(!CreateBlocking()); - - // Attempt bad operations. - int buf = kTestValue; - ASSERT_THAT(write(rfd_.get(), &buf, sizeof(buf)), - SyscallFailsWithErrno(EBADF)); - EXPECT_THAT(read(wfd_.get(), &buf, sizeof(buf)), - SyscallFailsWithErrno(EBADF)); -} - -TEST_P(PipeTest, Flags) { - SKIP_IF(!CreateBlocking()); - - if (IsNamedPipe()) { - // May be stubbed to zero; define locally. - EXPECT_THAT(fcntl(rfd_.get(), F_GETFL), - SyscallSucceedsWithValue(kOLargeFile | O_RDONLY)); - EXPECT_THAT(fcntl(wfd_.get(), F_GETFL), - SyscallSucceedsWithValue(kOLargeFile | O_WRONLY)); - } else { - EXPECT_THAT(fcntl(rfd_.get(), F_GETFL), SyscallSucceedsWithValue(O_RDONLY)); - EXPECT_THAT(fcntl(wfd_.get(), F_GETFL), SyscallSucceedsWithValue(O_WRONLY)); - } -} - -TEST_P(PipeTest, Write) { - SKIP_IF(!CreateBlocking()); - - int wbuf = kTestValue; - int rbuf = ~kTestValue; - ASSERT_THAT(write(wfd_.get(), &wbuf, sizeof(wbuf)), - SyscallSucceedsWithValue(sizeof(wbuf))); - ASSERT_THAT(read(rfd_.get(), &rbuf, sizeof(rbuf)), - SyscallSucceedsWithValue(sizeof(rbuf))); - EXPECT_EQ(wbuf, rbuf); -} - -TEST_P(PipeTest, WritePage) { - SKIP_IF(!CreateBlocking()); - - std::vector<char> wbuf(kPageSize); - RandomizeBuffer(wbuf.data(), wbuf.size()); - std::vector<char> rbuf(wbuf.size()); - - ASSERT_THAT(write(wfd_.get(), wbuf.data(), wbuf.size()), - SyscallSucceedsWithValue(wbuf.size())); - ASSERT_THAT(read(rfd_.get(), rbuf.data(), rbuf.size()), - SyscallSucceedsWithValue(rbuf.size())); - EXPECT_EQ(memcmp(rbuf.data(), wbuf.data(), wbuf.size()), 0); -} - -TEST_P(PipeTest, NonBlocking) { - SKIP_IF(!CreateNonBlocking()); - - int wbuf = kTestValue; - int rbuf = ~kTestValue; - EXPECT_THAT(read(rfd_.get(), &rbuf, sizeof(rbuf)), - SyscallFailsWithErrno(EWOULDBLOCK)); - ASSERT_THAT(write(wfd_.get(), &wbuf, sizeof(wbuf)), - SyscallSucceedsWithValue(sizeof(wbuf))); - - ASSERT_THAT(read(rfd_.get(), &rbuf, sizeof(rbuf)), - SyscallSucceedsWithValue(sizeof(rbuf))); - EXPECT_EQ(wbuf, rbuf); - EXPECT_THAT(read(rfd_.get(), &rbuf, sizeof(rbuf)), - SyscallFailsWithErrno(EWOULDBLOCK)); -} - -TEST(Pipe2Test, CloExec) { - int fds[2]; - ASSERT_THAT(pipe2(fds, O_CLOEXEC), SyscallSucceeds()); - EXPECT_THAT(fcntl(fds[0], F_GETFD), SyscallSucceedsWithValue(FD_CLOEXEC)); - EXPECT_THAT(fcntl(fds[1], F_GETFD), SyscallSucceedsWithValue(FD_CLOEXEC)); - EXPECT_THAT(close(fds[0]), SyscallSucceeds()); - EXPECT_THAT(close(fds[1]), SyscallSucceeds()); -} - -TEST(Pipe2Test, BadOptions) { - int fds[2]; - EXPECT_THAT(pipe2(fds, 0xDEAD), SyscallFailsWithErrno(EINVAL)); -} - -// Tests that opening named pipes with O_TRUNC shouldn't cause an error, but -// calls to (f)truncate should. -TEST(NamedPipeTest, Truncate) { - const std::string tmp_path = NewTempAbsPath(); - SKIP_IF(mkfifo(tmp_path.c_str(), 0644) != 0); - - ASSERT_THAT(open(tmp_path.c_str(), O_NONBLOCK | O_RDONLY), SyscallSucceeds()); - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE( - Open(tmp_path.c_str(), O_RDWR | O_NONBLOCK | O_TRUNC)); - - ASSERT_THAT(truncate(tmp_path.c_str(), 0), SyscallFailsWithErrno(EINVAL)); - ASSERT_THAT(ftruncate(fd.get(), 0), SyscallFailsWithErrno(EINVAL)); -} - -TEST_P(PipeTest, Seek) { - SKIP_IF(!CreateBlocking()); - - for (int i = 0; i < 4; i++) { - // Attempt absolute seeks. - EXPECT_THAT(lseek(rfd_.get(), 0, SEEK_SET), SyscallFailsWithErrno(ESPIPE)); - EXPECT_THAT(lseek(rfd_.get(), 4, SEEK_SET), SyscallFailsWithErrno(ESPIPE)); - EXPECT_THAT(lseek(wfd_.get(), 0, SEEK_SET), SyscallFailsWithErrno(ESPIPE)); - EXPECT_THAT(lseek(wfd_.get(), 4, SEEK_SET), SyscallFailsWithErrno(ESPIPE)); - - // Attempt relative seeks. - EXPECT_THAT(lseek(rfd_.get(), 0, SEEK_CUR), SyscallFailsWithErrno(ESPIPE)); - EXPECT_THAT(lseek(rfd_.get(), 4, SEEK_CUR), SyscallFailsWithErrno(ESPIPE)); - EXPECT_THAT(lseek(wfd_.get(), 0, SEEK_CUR), SyscallFailsWithErrno(ESPIPE)); - EXPECT_THAT(lseek(wfd_.get(), 4, SEEK_CUR), SyscallFailsWithErrno(ESPIPE)); - - // Attempt end-of-file seeks. - EXPECT_THAT(lseek(rfd_.get(), 0, SEEK_CUR), SyscallFailsWithErrno(ESPIPE)); - EXPECT_THAT(lseek(rfd_.get(), -4, SEEK_END), SyscallFailsWithErrno(ESPIPE)); - EXPECT_THAT(lseek(wfd_.get(), 0, SEEK_CUR), SyscallFailsWithErrno(ESPIPE)); - EXPECT_THAT(lseek(wfd_.get(), -4, SEEK_END), SyscallFailsWithErrno(ESPIPE)); - - // Add some more data to the pipe. - int buf = kTestValue; - ASSERT_THAT(write(wfd_.get(), &buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - } -} - -TEST_P(PipeTest, OffsetCalls) { - SKIP_IF(!CreateBlocking()); - - int buf; - EXPECT_THAT(pread(wfd_.get(), &buf, sizeof(buf), 0), - SyscallFailsWithErrno(ESPIPE)); - EXPECT_THAT(pwrite(rfd_.get(), &buf, sizeof(buf), 0), - SyscallFailsWithErrno(ESPIPE)); - - struct iovec iov; - EXPECT_THAT(preadv(wfd_.get(), &iov, 1, 0), SyscallFailsWithErrno(ESPIPE)); - EXPECT_THAT(pwritev(rfd_.get(), &iov, 1, 0), SyscallFailsWithErrno(ESPIPE)); -} - -TEST_P(PipeTest, WriterSideCloses) { - SKIP_IF(!CreateBlocking()); - - ScopedThread t([this]() { - int buf = ~kTestValue; - ASSERT_THAT(read(rfd_.get(), &buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - EXPECT_EQ(buf, kTestValue); - // This will return when the close() completes. - ASSERT_THAT(read(rfd_.get(), &buf, sizeof(buf)), SyscallSucceeds()); - // This will return straight away. - ASSERT_THAT(read(rfd_.get(), &buf, sizeof(buf)), - SyscallSucceedsWithValue(0)); - }); - - // Sleep a bit so the thread can block. - absl::SleepFor(syncDelay); - - // Write to unblock. - int buf = kTestValue; - ASSERT_THAT(write(wfd_.get(), &buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - - // Sleep a bit so the thread can block again. - absl::SleepFor(syncDelay); - - // Allow the thread to complete. - ASSERT_THAT(close(wfd_.release()), SyscallSucceeds()); - t.Join(); -} - -TEST_P(PipeTest, WriterSideClosesReadDataFirst) { - SKIP_IF(!CreateBlocking()); - - int wbuf = kTestValue; - ASSERT_THAT(write(wfd_.get(), &wbuf, sizeof(wbuf)), - SyscallSucceedsWithValue(sizeof(wbuf))); - ASSERT_THAT(close(wfd_.release()), SyscallSucceeds()); - - int rbuf; - ASSERT_THAT(read(rfd_.get(), &rbuf, sizeof(rbuf)), - SyscallSucceedsWithValue(sizeof(rbuf))); - EXPECT_EQ(wbuf, rbuf); - EXPECT_THAT(read(rfd_.get(), &rbuf, sizeof(rbuf)), - SyscallSucceedsWithValue(0)); -} - -TEST_P(PipeTest, ReaderSideCloses) { - SKIP_IF(!CreateBlocking()); - - ASSERT_THAT(close(rfd_.release()), SyscallSucceeds()); - int buf = kTestValue; - EXPECT_THAT(write(wfd_.get(), &buf, sizeof(buf)), - SyscallFailsWithErrno(EPIPE)); -} - -TEST_P(PipeTest, CloseTwice) { - SKIP_IF(!CreateBlocking()); - - int reader = rfd_.release(); - int writer = wfd_.release(); - ASSERT_THAT(close(reader), SyscallSucceeds()); - ASSERT_THAT(close(writer), SyscallSucceeds()); - EXPECT_THAT(close(reader), SyscallFailsWithErrno(EBADF)); - EXPECT_THAT(close(writer), SyscallFailsWithErrno(EBADF)); -} - -// Blocking write returns EPIPE when read end is closed if nothing has been -// written. -TEST_P(PipeTest, BlockWriteClosed) { - SKIP_IF(!CreateBlocking()); - - absl::Notification notify; - ScopedThread t([this, ¬ify]() { - std::vector<char> buf(Size()); - // Exactly fill the pipe buffer. - ASSERT_THAT(WriteFd(wfd_.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(buf.size())); - - notify.Notify(); - - // Attempt to write one more byte. Blocks. - // N.B. Don't use WriteFd, we don't want a retry. - EXPECT_THAT(write(wfd_.get(), buf.data(), 1), SyscallFailsWithErrno(EPIPE)); - }); - - notify.WaitForNotification(); - ASSERT_THAT(close(rfd_.release()), SyscallSucceeds()); - t.Join(); -} - -// Blocking write returns EPIPE when read end is closed even if something has -// been written. -TEST_P(PipeTest, BlockPartialWriteClosed) { - SKIP_IF(!CreateBlocking()); - - ScopedThread t([this]() { - const int pipe_size = Size(); - std::vector<char> buf(2 * pipe_size); - - // Write more than fits in the buffer. Blocks then returns partial write - // when the other end is closed. The next call returns EPIPE. - ASSERT_THAT(write(wfd_.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(pipe_size)); - EXPECT_THAT(write(wfd_.get(), buf.data(), buf.size()), - SyscallFailsWithErrno(EPIPE)); - }); - - // Leave time for write to become blocked. - absl::SleepFor(syncDelay); - - // Unblock the above. - ASSERT_THAT(close(rfd_.release()), SyscallSucceeds()); - t.Join(); -} - -TEST_P(PipeTest, ReadFromClosedFd_NoRandomSave) { - SKIP_IF(!CreateBlocking()); - - absl::Notification notify; - ScopedThread t([this, ¬ify]() { - notify.Notify(); - int buf; - ASSERT_THAT(read(rfd_.get(), &buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - ASSERT_EQ(kTestValue, buf); - }); - notify.WaitForNotification(); - - // Make sure that the thread gets to read(). - absl::SleepFor(syncDelay); - - { - // We cannot save/restore here as the read end of pipe is closed but there - // is ongoing read() above. We will not be able to restart the read() - // successfully in restore run since the read fd is closed. - const DisableSave ds; - ASSERT_THAT(close(rfd_.release()), SyscallSucceeds()); - int buf = kTestValue; - ASSERT_THAT(write(wfd_.get(), &buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - t.Join(); - } -} - -TEST_P(PipeTest, FionRead) { - SKIP_IF(!CreateBlocking()); - - int n; - ASSERT_THAT(ioctl(rfd_.get(), FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - ASSERT_THAT(ioctl(wfd_.get(), FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - - std::vector<char> buf(Size()); - ASSERT_THAT(write(wfd_.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(buf.size())); - - EXPECT_THAT(ioctl(rfd_.get(), FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, buf.size()); - EXPECT_THAT(ioctl(wfd_.get(), FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, buf.size()); -} - -// Test that opening an empty anonymous pipe RDONLY via /proc/self/fd/N does not -// block waiting for a writer. -TEST_P(PipeTest, OpenViaProcSelfFD) { - SKIP_IF(!CreateBlocking()); - SKIP_IF(IsNamedPipe()); - - // Close the write end of the pipe. - ASSERT_THAT(close(wfd_.release()), SyscallSucceeds()); - - // Open other side via /proc/self/fd. It should not block. - FileDescriptor proc_self_fd = ASSERT_NO_ERRNO_AND_VALUE( - Open(absl::StrCat("/proc/self/fd/", rfd_.get()), O_RDONLY)); -} - -// Test that opening and reading from an anonymous pipe (with existing writes) -// RDONLY via /proc/self/fd/N returns the existing data. -TEST_P(PipeTest, OpenViaProcSelfFDWithWrites) { - SKIP_IF(!CreateBlocking()); - SKIP_IF(IsNamedPipe()); - - // Write to the pipe and then close the write fd. - int wbuf = kTestValue; - ASSERT_THAT(write(wfd_.get(), &wbuf, sizeof(wbuf)), - SyscallSucceedsWithValue(sizeof(wbuf))); - ASSERT_THAT(close(wfd_.release()), SyscallSucceeds()); - - // Open read side via /proc/self/fd, and read from it. - FileDescriptor proc_self_fd = ASSERT_NO_ERRNO_AND_VALUE( - Open(absl::StrCat("/proc/self/fd/", rfd_.get()), O_RDONLY)); - int rbuf; - ASSERT_THAT(read(proc_self_fd.get(), &rbuf, sizeof(rbuf)), - SyscallSucceedsWithValue(sizeof(rbuf))); - EXPECT_EQ(wbuf, rbuf); -} - -// Test that accesses of /proc/<PID>/fd correctly decrement the refcount. -TEST_P(PipeTest, ProcFDReleasesFile) { - SKIP_IF(!CreateBlocking()); - - // Stat the pipe FD, which shouldn't alter the refcount. - struct stat wst; - ASSERT_THAT(lstat(absl::StrCat("/proc/self/fd/", wfd_.get()).c_str(), &wst), - SyscallSucceeds()); - - // Close the write end and ensure that read indicates EOF. - wfd_.reset(); - char buf; - ASSERT_THAT(read(rfd_.get(), &buf, 1), SyscallSucceedsWithValue(0)); -} - -// Same for /proc/<PID>/fdinfo. -TEST_P(PipeTest, ProcFDInfoReleasesFile) { - SKIP_IF(!CreateBlocking()); - - // Stat the pipe FD, which shouldn't alter the refcount. - struct stat wst; - ASSERT_THAT( - lstat(absl::StrCat("/proc/self/fdinfo/", wfd_.get()).c_str(), &wst), - SyscallSucceeds()); - - // Close the write end and ensure that read indicates EOF. - wfd_.reset(); - char buf; - ASSERT_THAT(read(rfd_.get(), &buf, 1), SyscallSucceedsWithValue(0)); -} - -TEST_P(PipeTest, SizeChange) { - SKIP_IF(!CreateBlocking()); - - // Set the minimum possible size. - ASSERT_THAT(fcntl(rfd_.get(), F_SETPIPE_SZ, 0), SyscallSucceeds()); - int min = Size(); - EXPECT_GT(min, 0); // Should be rounded up. - - // Set from the read end. - ASSERT_THAT(fcntl(rfd_.get(), F_SETPIPE_SZ, min + 1), SyscallSucceeds()); - int med = Size(); - EXPECT_GT(med, min); // Should have grown, may be rounded. - - // Set from the write end. - ASSERT_THAT(fcntl(wfd_.get(), F_SETPIPE_SZ, med + 1), SyscallSucceeds()); - int max = Size(); - EXPECT_GT(max, med); // Ditto. -} - -TEST_P(PipeTest, SizeChangeMax) { - SKIP_IF(!CreateBlocking()); - - // Assert there's some maximum. - EXPECT_THAT(fcntl(rfd_.get(), F_SETPIPE_SZ, 0x7fffffffffffffff), - SyscallFailsWithErrno(EINVAL)); - EXPECT_THAT(fcntl(wfd_.get(), F_SETPIPE_SZ, 0x7fffffffffffffff), - SyscallFailsWithErrno(EINVAL)); -} - -TEST_P(PipeTest, SizeChangeFull) { - SKIP_IF(!CreateBlocking()); - - // Ensure that we adjust to a large enough size to avoid rounding when we - // perform the size decrease. If rounding occurs, we may not actually - // adjust the size and the call below will return success. It was found via - // experimentation that this granularity avoids the rounding for Linux. - constexpr int kDelta = 64 * 1024; - ASSERT_THAT(fcntl(wfd_.get(), F_SETPIPE_SZ, Size() + kDelta), - SyscallSucceeds()); - - // Fill the buffer and try to change down. - std::vector<char> buf(Size()); - ASSERT_THAT(write(wfd_.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(buf.size())); - EXPECT_THAT(fcntl(wfd_.get(), F_SETPIPE_SZ, Size() - kDelta), - SyscallFailsWithErrno(EBUSY)); -} - -TEST_P(PipeTest, Streaming) { - SKIP_IF(!CreateBlocking()); - - // We make too many calls to go through full save cycles. - DisableSave ds; - - // Size() requires 2 syscalls, call it once and remember the value. - const int pipe_size = Size(); - - absl::Notification notify; - ScopedThread t([this, ¬ify, pipe_size]() { - // Don't start until it's full. - notify.WaitForNotification(); - for (int i = 0; i < pipe_size; i++) { - int rbuf; - ASSERT_THAT(read(rfd_.get(), &rbuf, sizeof(rbuf)), - SyscallSucceedsWithValue(sizeof(rbuf))); - EXPECT_EQ(rbuf, i); - } - }); - - // Write 4 bytes * pipe_size. It will fill up the pipe once, notify the reader - // to start. Then we write pipe size worth 3 more times to ensure the reader - // can follow along. - ssize_t total = 0; - for (int i = 0; i < pipe_size; i++) { - ssize_t written = write(wfd_.get(), &i, sizeof(i)); - ASSERT_THAT(written, SyscallSucceedsWithValue(sizeof(i))); - total += written; - - // Is the next write about to fill up the buffer? Wake up the reader once. - if (total < pipe_size && (total + written) >= pipe_size) { - notify.Notify(); - } - } -} - -std::string PipeCreatorName(::testing::TestParamInfo<PipeCreator> info) { - return info.param.name_; // Use the name specified. -} - -INSTANTIATE_TEST_SUITE_P( - Pipes, PipeTest, - ::testing::Values( - PipeCreator{ - "pipe", - [](int fds[2], bool* is_blocking, bool* is_namedpipe) { - ASSERT_THAT(pipe(fds), SyscallSucceeds()); - *is_blocking = true; - *is_namedpipe = false; - }, - }, - PipeCreator{ - "pipe2blocking", - [](int fds[2], bool* is_blocking, bool* is_namedpipe) { - ASSERT_THAT(pipe2(fds, 0), SyscallSucceeds()); - *is_blocking = true; - *is_namedpipe = false; - }, - }, - PipeCreator{ - "pipe2nonblocking", - [](int fds[2], bool* is_blocking, bool* is_namedpipe) { - ASSERT_THAT(pipe2(fds, O_NONBLOCK), SyscallSucceeds()); - *is_blocking = false; - *is_namedpipe = false; - }, - }, - PipeCreator{ - "smallbuffer", - [](int fds[2], bool* is_blocking, bool* is_namedpipe) { - // Set to the minimum available size (will round up). - ASSERT_THAT(pipe(fds), SyscallSucceeds()); - ASSERT_THAT(fcntl(fds[0], F_SETPIPE_SZ, 0), SyscallSucceeds()); - *is_blocking = true; - *is_namedpipe = false; - }, - }, - PipeCreator{ - "namednonblocking", - [](int fds[2], bool* is_blocking, bool* is_namedpipe) { - // Create a new file-based pipe (non-blocking). - auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - ASSERT_THAT(unlink(file.path().c_str()), SyscallSucceeds()); - SKIP_IF(mkfifo(file.path().c_str(), 0644) != 0); - fds[0] = open(file.path().c_str(), O_NONBLOCK | O_RDONLY); - fds[1] = open(file.path().c_str(), O_NONBLOCK | O_WRONLY); - MaybeSave(); - *is_blocking = false; - *is_namedpipe = true; - }, - }, - PipeCreator{ - "namedblocking", - [](int fds[2], bool* is_blocking, bool* is_namedpipe) { - // Create a new file-based pipe (blocking). - auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - ASSERT_THAT(unlink(file.path().c_str()), SyscallSucceeds()); - SKIP_IF(mkfifo(file.path().c_str(), 0644) != 0); - ScopedThread t([&file, &fds]() { - fds[1] = open(file.path().c_str(), O_WRONLY); - }); - fds[0] = open(file.path().c_str(), O_RDONLY); - t.Join(); - MaybeSave(); - *is_blocking = true; - *is_namedpipe = true; - }, - }), - PipeCreatorName); - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/poll.cc b/test/syscalls/linux/poll.cc deleted file mode 100644 index c42472474..000000000 --- a/test/syscalls/linux/poll.cc +++ /dev/null @@ -1,294 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <poll.h> -#include <sys/resource.h> -#include <sys/socket.h> -#include <sys/types.h> - -#include <algorithm> -#include <iostream> - -#include "gtest/gtest.h" -#include "absl/synchronization/notification.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/syscalls/linux/base_poll_test.h" -#include "test/util/eventfd_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/logging.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { -namespace { - -class PollTest : public BasePollTest { - protected: - void SetUp() override { BasePollTest::SetUp(); } - void TearDown() override { BasePollTest::TearDown(); } -}; - -TEST_F(PollTest, InvalidFds) { - // fds is invalid because it's null, but we tell ppoll the length is non-zero. - EXPECT_THAT(poll(nullptr, 1, 1), SyscallFailsWithErrno(EFAULT)); - EXPECT_THAT(poll(nullptr, -1, 1), SyscallFailsWithErrno(EINVAL)); -} - -TEST_F(PollTest, NullFds) { - EXPECT_THAT(poll(nullptr, 0, 10), SyscallSucceeds()); -} - -TEST_F(PollTest, ZeroTimeout) { - EXPECT_THAT(poll(nullptr, 0, 0), SyscallSucceeds()); -} - -// If random S/R interrupts the poll, SIGALRM may be delivered before poll -// restarts, causing the poll to hang forever. -TEST_F(PollTest, NegativeTimeout_NoRandomSave) { - // Negative timeout mean wait forever so set a timer. - SetTimer(absl::Milliseconds(100)); - EXPECT_THAT(poll(nullptr, 0, -1), SyscallFailsWithErrno(EINTR)); - EXPECT_TRUE(TimerFired()); -} - -TEST_F(PollTest, NonBlockingEventPOLLIN) { - // Create a pipe. - int fds[2]; - ASSERT_THAT(pipe(fds), SyscallSucceeds()); - - FileDescriptor fd0(fds[0]); - FileDescriptor fd1(fds[1]); - - // Write some data to the pipe. - char s[] = "foo\n"; - ASSERT_THAT(WriteFd(fd1.get(), s, strlen(s) + 1), SyscallSucceeds()); - - // Poll on the reader fd with POLLIN event. - struct pollfd poll_fd = {fd0.get(), POLLIN, 0}; - EXPECT_THAT(RetryEINTR(poll)(&poll_fd, 1, 0), SyscallSucceedsWithValue(1)); - - // Should trigger POLLIN event. - EXPECT_EQ(poll_fd.revents & POLLIN, POLLIN); -} - -TEST_F(PollTest, BlockingEventPOLLIN) { - // Create a pipe. - int fds[2]; - ASSERT_THAT(pipe(fds), SyscallSucceeds()); - - FileDescriptor fd0(fds[0]); - FileDescriptor fd1(fds[1]); - - // Start a blocking poll on the read fd. - absl::Notification notify; - ScopedThread t([&fd0, ¬ify]() { - notify.Notify(); - - // Poll on the reader fd with POLLIN event. - struct pollfd poll_fd = {fd0.get(), POLLIN, 0}; - EXPECT_THAT(RetryEINTR(poll)(&poll_fd, 1, -1), SyscallSucceedsWithValue(1)); - - // Should trigger POLLIN event. - EXPECT_EQ(poll_fd.revents & POLLIN, POLLIN); - }); - - notify.WaitForNotification(); - absl::SleepFor(absl::Seconds(1.0)); - - // Write some data to the pipe. - char s[] = "foo\n"; - ASSERT_THAT(WriteFd(fd1.get(), s, strlen(s) + 1), SyscallSucceeds()); -} - -TEST_F(PollTest, NonBlockingEventPOLLHUP) { - // Create a pipe. - int fds[2]; - ASSERT_THAT(pipe(fds), SyscallSucceeds()); - - FileDescriptor fd0(fds[0]); - FileDescriptor fd1(fds[1]); - - // Close the writer fd. - fd1.reset(); - - // Poll on the reader fd with POLLIN event. - struct pollfd poll_fd = {fd0.get(), POLLIN, 0}; - EXPECT_THAT(RetryEINTR(poll)(&poll_fd, 1, 0), SyscallSucceedsWithValue(1)); - - // Should trigger POLLHUP event. - EXPECT_EQ(poll_fd.revents & POLLHUP, POLLHUP); - - // Should not trigger POLLIN event. - EXPECT_EQ(poll_fd.revents & POLLIN, 0); -} - -TEST_F(PollTest, BlockingEventPOLLHUP) { - // Create a pipe. - int fds[2]; - ASSERT_THAT(pipe(fds), SyscallSucceeds()); - - FileDescriptor fd0(fds[0]); - FileDescriptor fd1(fds[1]); - - // Start a blocking poll on the read fd. - absl::Notification notify; - ScopedThread t([&fd0, ¬ify]() { - notify.Notify(); - - // Poll on the reader fd with POLLIN event. - struct pollfd poll_fd = {fd0.get(), POLLIN, 0}; - EXPECT_THAT(RetryEINTR(poll)(&poll_fd, 1, -1), SyscallSucceedsWithValue(1)); - - // Should trigger POLLHUP event. - EXPECT_EQ(poll_fd.revents & POLLHUP, POLLHUP); - - // Should not trigger POLLIN event. - EXPECT_EQ(poll_fd.revents & POLLIN, 0); - }); - - notify.WaitForNotification(); - absl::SleepFor(absl::Seconds(1.0)); - - // Write some data and close the writer fd. - fd1.reset(); -} - -TEST_F(PollTest, NonBlockingEventPOLLERR) { - // Create a pipe. - int fds[2]; - ASSERT_THAT(pipe(fds), SyscallSucceeds()); - - FileDescriptor fd0(fds[0]); - FileDescriptor fd1(fds[1]); - - // Close the reader fd. - fd0.reset(); - - // Poll on the writer fd with POLLOUT event. - struct pollfd poll_fd = {fd1.get(), POLLOUT, 0}; - EXPECT_THAT(RetryEINTR(poll)(&poll_fd, 1, 0), SyscallSucceedsWithValue(1)); - - // Should trigger POLLERR event. - EXPECT_EQ(poll_fd.revents & POLLERR, POLLERR); - - // Should also trigger POLLOUT event. - EXPECT_EQ(poll_fd.revents & POLLOUT, POLLOUT); -} - -// This test will validate that if an FD is already ready on some event, whether -// it's POLLIN or POLLOUT it will not immediately return unless that's actually -// what the caller was interested in. -TEST_F(PollTest, ImmediatelyReturnOnlyOnPollEvents) { - // Create a pipe. - int fds[2]; - ASSERT_THAT(pipe(fds), SyscallSucceeds()); - - FileDescriptor fd0(fds[0]); - FileDescriptor fd1(fds[1]); - - // Wait for read related event on the write side of the pipe, since a write - // is possible on fds[1] it would mean that POLLOUT would return immediately. - // We should make sure that we're not woken up with that state that we didn't - // specificially request. - constexpr int kTimeoutMs = 100; - struct pollfd poll_fd = {fd1.get(), POLLIN | POLLPRI | POLLRDHUP, 0}; - EXPECT_THAT(RetryEINTR(poll)(&poll_fd, 1, kTimeoutMs), - SyscallSucceedsWithValue(0)); // We should timeout. - EXPECT_EQ(poll_fd.revents, 0); // Nothing should be in returned events. - - // Now let's poll on POLLOUT and we should get back 1 fd as being ready and - // it should contain POLLOUT in the revents. - poll_fd.events = POLLOUT; - EXPECT_THAT(RetryEINTR(poll)(&poll_fd, 1, kTimeoutMs), - SyscallSucceedsWithValue(1)); // 1 fd should have an event. - EXPECT_EQ(poll_fd.revents, POLLOUT); // POLLOUT should be in revents. -} - -// This test validates that poll(2) while data is available immediately returns. -TEST_F(PollTest, PollLevelTriggered) { - int fds[2] = {}; - ASSERT_THAT(socketpair(AF_UNIX, SOCK_STREAM, /*protocol=*/0, fds), - SyscallSucceeds()); - - FileDescriptor fd0(fds[0]); - FileDescriptor fd1(fds[1]); - - // Write two bytes to the socket. - const char* kBuf = "aa"; - ASSERT_THAT(RetryEINTR(send)(fd0.get(), kBuf, /*len=*/2, /*flags=*/0), - SyscallSucceedsWithValue(2)); // 2 bytes should be written. - - // Poll(2) should immediately return as there is data available to read. - constexpr int kInfiniteTimeout = -1; - struct pollfd poll_fd = {fd1.get(), POLLIN, 0}; - ASSERT_THAT(RetryEINTR(poll)(&poll_fd, /*nfds=*/1, kInfiniteTimeout), - SyscallSucceedsWithValue(1)); // 1 fd should be ready to read. - EXPECT_NE(poll_fd.revents & POLLIN, 0); - - // Read a single byte. - char read_byte = 0; - ASSERT_THAT(RetryEINTR(recv)(fd1.get(), &read_byte, /*len=*/1, /*flags=*/0), - SyscallSucceedsWithValue(1)); // 1 byte should be read. - ASSERT_EQ(read_byte, 'a'); // We should have read a single 'a'. - - // Create a separate pollfd for our second poll. - struct pollfd poll_fd_after = {fd1.get(), POLLIN, 0}; - - // Poll(2) should again immediately return since we only read one byte. - ASSERT_THAT(RetryEINTR(poll)(&poll_fd_after, /*nfds=*/1, kInfiniteTimeout), - SyscallSucceedsWithValue(1)); // 1 fd should be ready to read. - EXPECT_NE(poll_fd_after.revents & POLLIN, 0); -} - -TEST_F(PollTest, Nfds) { - // Stash value of RLIMIT_NOFILES. - struct rlimit rlim; - TEST_PCHECK(getrlimit(RLIMIT_NOFILE, &rlim) == 0); - - // gVisor caps the number of FDs that epoll can use beyond RLIMIT_NOFILE. - constexpr rlim_t gVisorMax = 1048576; - if (rlim.rlim_cur > gVisorMax) { - rlim.rlim_cur = gVisorMax; - TEST_PCHECK(setrlimit(RLIMIT_NOFILE, &rlim) == 0); - } - - rlim_t max_fds = rlim.rlim_cur; - std::cout << "Using limit: " << max_fds; - - // Create an eventfd. Since its value is initially zero, it is writable. - FileDescriptor efd = ASSERT_NO_ERRNO_AND_VALUE(NewEventFD()); - - // Create the biggest possible pollfd array such that each element is valid. - // Each entry in the 'fds' array refers to the eventfd and polls for - // "writable" events (events=POLLOUT). This essentially guarantees that the - // poll() is a no-op and allows negative testing of the 'nfds' parameter. - std::vector<struct pollfd> fds(max_fds + 1, - {.fd = efd.get(), .events = POLLOUT}); - - // Verify that 'nfds' up to RLIMIT_NOFILE are allowed. - EXPECT_THAT(RetryEINTR(poll)(fds.data(), 1, 1), SyscallSucceedsWithValue(1)); - EXPECT_THAT(RetryEINTR(poll)(fds.data(), max_fds / 2, 1), - SyscallSucceedsWithValue(max_fds / 2)); - EXPECT_THAT(RetryEINTR(poll)(fds.data(), max_fds, 1), - SyscallSucceedsWithValue(max_fds)); - - // If 'nfds' exceeds RLIMIT_NOFILE then it must fail with EINVAL. - EXPECT_THAT(poll(fds.data(), max_fds + 1, 1), SyscallFailsWithErrno(EINVAL)); -} - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/ppoll.cc b/test/syscalls/linux/ppoll.cc deleted file mode 100644 index 8245a11e8..000000000 --- a/test/syscalls/linux/ppoll.cc +++ /dev/null @@ -1,155 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <poll.h> -#include <signal.h> -#include <sys/syscall.h> -#include <sys/time.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "absl/time/time.h" -#include "test/syscalls/linux/base_poll_test.h" -#include "test/util/signal_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -// Linux and glibc have a different idea of the sizeof sigset_t. When calling -// the syscall directly, use what the kernel expects. -unsigned kSigsetSize = SIGRTMAX / 8; - -// Linux ppoll(2) differs from the glibc wrapper function in that Linux updates -// the timeout with the amount of time remaining. In order to test this behavior -// we need to use the syscall directly. -int syscallPpoll(struct pollfd* fds, nfds_t nfds, struct timespec* timeout_ts, - const sigset_t* sigmask, unsigned mask_size) { - return syscall(SYS_ppoll, fds, nfds, timeout_ts, sigmask, mask_size); -} - -class PpollTest : public BasePollTest { - protected: - void SetUp() override { BasePollTest::SetUp(); } - void TearDown() override { BasePollTest::TearDown(); } -}; - -TEST_F(PpollTest, InvalidFds) { - // fds is invalid because it's null, but we tell ppoll the length is non-zero. - struct timespec timeout = {}; - sigset_t sigmask; - TEST_PCHECK(sigemptyset(&sigmask) == 0); - EXPECT_THAT(syscallPpoll(nullptr, 1, &timeout, &sigmask, kSigsetSize), - SyscallFailsWithErrno(EFAULT)); - EXPECT_THAT(syscallPpoll(nullptr, -1, &timeout, &sigmask, kSigsetSize), - SyscallFailsWithErrno(EINVAL)); -} - -// See that when fds is null, ppoll behaves like sleep. -TEST_F(PpollTest, NullFds) { - struct timespec timeout = absl::ToTimespec(absl::Milliseconds(10)); - ASSERT_THAT(syscallPpoll(nullptr, 0, &timeout, nullptr, 0), - SyscallSucceeds()); - EXPECT_EQ(timeout.tv_sec, 0); - EXPECT_EQ(timeout.tv_nsec, 0); -} - -TEST_F(PpollTest, ZeroTimeout) { - struct timespec timeout = {}; - ASSERT_THAT(syscallPpoll(nullptr, 0, &timeout, nullptr, 0), - SyscallSucceeds()); - EXPECT_EQ(timeout.tv_sec, 0); - EXPECT_EQ(timeout.tv_nsec, 0); -} - -// If random S/R interrupts the ppoll, SIGALRM may be delivered before ppoll -// restarts, causing the ppoll to hang forever. -TEST_F(PpollTest, NoTimeout_NoRandomSave) { - // When there's no timeout, ppoll may never return so set a timer. - SetTimer(absl::Milliseconds(100)); - // See that we get interrupted by the timer. - ASSERT_THAT(syscallPpoll(nullptr, 0, nullptr, nullptr, 0), - SyscallFailsWithErrno(EINTR)); - EXPECT_TRUE(TimerFired()); -} - -TEST_F(PpollTest, InvalidTimeoutNegative) { - struct timespec timeout = absl::ToTimespec(absl::Nanoseconds(-1)); - EXPECT_THAT(syscallPpoll(nullptr, 0, &timeout, nullptr, 0), - SyscallFailsWithErrno(EINVAL)); -} - -TEST_F(PpollTest, InvalidTimeoutNotNormalized) { - struct timespec timeout = {0, 1000000001}; - EXPECT_THAT(syscallPpoll(nullptr, 0, &timeout, nullptr, 0), - SyscallFailsWithErrno(EINVAL)); -} - -TEST_F(PpollTest, InvalidMaskSize) { - struct timespec timeout = {}; - sigset_t sigmask; - TEST_PCHECK(sigemptyset(&sigmask) == 0); - EXPECT_THAT(syscallPpoll(nullptr, 0, &timeout, &sigmask, 128), - SyscallFailsWithErrno(EINVAL)); -} - -// Verify that signals blocked by the ppoll mask (that would otherwise be -// allowed) do not interrupt ppoll. -TEST_F(PpollTest, SignalMaskBlocksSignal) { - absl::Duration duration(absl::Seconds(30)); - struct timespec timeout = absl::ToTimespec(duration); - absl::Duration timer_duration(absl::Seconds(10)); - - // Call with a mask that blocks SIGALRM. See that ppoll is not interrupted - // (i.e. returns 0) and that upon completion, the timer has fired. - sigset_t mask; - ASSERT_THAT(sigprocmask(0, nullptr, &mask), SyscallSucceeds()); - TEST_PCHECK(sigaddset(&mask, SIGALRM) == 0); - SetTimer(timer_duration); - MaybeSave(); - ASSERT_FALSE(TimerFired()); - ASSERT_THAT(syscallPpoll(nullptr, 0, &timeout, &mask, kSigsetSize), - SyscallSucceeds()); - EXPECT_TRUE(TimerFired()); - EXPECT_EQ(absl::DurationFromTimespec(timeout), absl::Duration()); -} - -// Verify that signals allowed by the ppoll mask (that would otherwise be -// blocked) interrupt ppoll. -TEST_F(PpollTest, SignalMaskAllowsSignal) { - absl::Duration duration(absl::Seconds(30)); - struct timespec timeout = absl::ToTimespec(duration); - absl::Duration timer_duration(absl::Seconds(10)); - - sigset_t mask; - ASSERT_THAT(sigprocmask(0, nullptr, &mask), SyscallSucceeds()); - - // Block SIGALRM. - auto cleanup = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_BLOCK, SIGALRM)); - - // Call with a mask that unblocks SIGALRM. See that ppoll is interrupted. - SetTimer(timer_duration); - MaybeSave(); - ASSERT_FALSE(TimerFired()); - ASSERT_THAT(syscallPpoll(nullptr, 0, &timeout, &mask, kSigsetSize), - SyscallFailsWithErrno(EINTR)); - EXPECT_TRUE(TimerFired()); - EXPECT_GT(absl::DurationFromTimespec(timeout), absl::Duration()); -} - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/prctl.cc b/test/syscalls/linux/prctl.cc deleted file mode 100644 index d07571a5f..000000000 --- a/test/syscalls/linux/prctl.cc +++ /dev/null @@ -1,230 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <sys/prctl.h> -#include <sys/ptrace.h> -#include <sys/types.h> -#include <sys/wait.h> -#include <unistd.h> - -#include <string> - -#include "gtest/gtest.h" -#include "absl/flags/flag.h" -#include "test/util/capability_util.h" -#include "test/util/cleanup.h" -#include "test/util/multiprocess_util.h" -#include "test/util/posix_error.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -ABSL_FLAG(bool, prctl_no_new_privs_test_child, false, - "If true, exit with the return value of prctl(PR_GET_NO_NEW_PRIVS) " - "plus an offset (see test source)."); - -namespace gvisor { -namespace testing { - -namespace { - -#ifndef SUID_DUMP_DISABLE -#define SUID_DUMP_DISABLE 0 -#endif /* SUID_DUMP_DISABLE */ -#ifndef SUID_DUMP_USER -#define SUID_DUMP_USER 1 -#endif /* SUID_DUMP_USER */ -#ifndef SUID_DUMP_ROOT -#define SUID_DUMP_ROOT 2 -#endif /* SUID_DUMP_ROOT */ - -TEST(PrctlTest, NameInitialized) { - const size_t name_length = 20; - char name[name_length] = {}; - ASSERT_THAT(prctl(PR_GET_NAME, name), SyscallSucceeds()); - ASSERT_NE(std::string(name), ""); -} - -TEST(PrctlTest, SetNameLongName) { - const size_t name_length = 20; - const std::string long_name(name_length, 'A'); - ASSERT_THAT(prctl(PR_SET_NAME, long_name.c_str()), SyscallSucceeds()); - char truncated_name[name_length] = {}; - ASSERT_THAT(prctl(PR_GET_NAME, truncated_name), SyscallSucceeds()); - const size_t truncated_length = 15; - ASSERT_EQ(long_name.substr(0, truncated_length), std::string(truncated_name)); -} - -TEST(PrctlTest, ChildProcessName) { - constexpr size_t kMaxNameLength = 15; - - char parent_name[kMaxNameLength + 1] = {}; - memset(parent_name, 'a', kMaxNameLength); - - ASSERT_THAT(prctl(PR_SET_NAME, parent_name), SyscallSucceeds()); - - pid_t child_pid = fork(); - TEST_PCHECK(child_pid >= 0); - if (child_pid == 0) { - char child_name[kMaxNameLength + 1] = {}; - TEST_PCHECK(prctl(PR_GET_NAME, child_name) >= 0); - TEST_CHECK(memcmp(parent_name, child_name, sizeof(parent_name)) == 0); - _exit(0); - } - - int status; - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << "status =" << status; -} - -// Offset added to exit code from test child to distinguish from other abnormal -// exits. -constexpr int kPrctlNoNewPrivsTestChildExitBase = 100; - -TEST(PrctlTest, NoNewPrivsPreservedAcrossCloneForkAndExecve) { - // Check if no_new_privs is already set. If it is, we can still test that it's - // preserved across clone/fork/execve, but we also expect it to still be set - // at the end of the test. Otherwise, call prctl(PR_SET_NO_NEW_PRIVS) so as - // not to contaminate the original thread. - int no_new_privs; - ASSERT_THAT(no_new_privs = prctl(PR_GET_NO_NEW_PRIVS, 0, 0, 0, 0), - SyscallSucceeds()); - ScopedThread([] { - ASSERT_THAT(prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0), SyscallSucceeds()); - EXPECT_THAT(prctl(PR_GET_NO_NEW_PRIVS, 0, 0, 0, 0), - SyscallSucceedsWithValue(1)); - ScopedThread([] { - EXPECT_THAT(prctl(PR_GET_NO_NEW_PRIVS, 0, 0, 0, 0), - SyscallSucceedsWithValue(1)); - // Note that these ASSERT_*s failing will only return from this thread, - // but this is the intended behavior. - pid_t child_pid = -1; - int execve_errno = 0; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec("/proc/self/exe", - {"/proc/self/exe", "--prctl_no_new_privs_test_child"}, {}, - nullptr, &child_pid, &execve_errno)); - - ASSERT_GT(child_pid, 0); - ASSERT_EQ(execve_errno, 0); - - int status = 0; - ASSERT_THAT(RetryEINTR(waitpid)(child_pid, &status, 0), - SyscallSucceeds()); - ASSERT_TRUE(WIFEXITED(status)); - ASSERT_EQ(WEXITSTATUS(status), kPrctlNoNewPrivsTestChildExitBase + 1); - - EXPECT_THAT(prctl(PR_GET_NO_NEW_PRIVS, 0, 0, 0, 0), - SyscallSucceedsWithValue(1)); - }); - EXPECT_THAT(prctl(PR_GET_NO_NEW_PRIVS, 0, 0, 0, 0), - SyscallSucceedsWithValue(1)); - }); - EXPECT_THAT(prctl(PR_GET_NO_NEW_PRIVS, 0, 0, 0, 0), - SyscallSucceedsWithValue(no_new_privs)); -} - -TEST(PrctlTest, PDeathSig) { - pid_t child_pid; - - // Make the new process' parent a separate thread since the parent death - // signal fires when the parent *thread* exits. - ScopedThread([&] { - child_pid = fork(); - TEST_CHECK(child_pid >= 0); - if (child_pid == 0) { - // In child process. - TEST_CHECK(prctl(PR_SET_PDEATHSIG, SIGKILL) >= 0); - int signo; - TEST_CHECK(prctl(PR_GET_PDEATHSIG, &signo) >= 0); - TEST_CHECK(signo == SIGKILL); - // Enable tracing, then raise SIGSTOP and expect our parent to suppress - // it. - TEST_CHECK(ptrace(PTRACE_TRACEME, 0, 0, 0) >= 0); - raise(SIGSTOP); - // Sleep until killed by our parent death signal. sleep(3) is - // async-signal-safe, absl::SleepFor isn't. - while (true) { - sleep(10); - } - } - // In parent process. - - // Wait for the child to send itself SIGSTOP and enter signal-delivery-stop. - int status; - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFSTOPPED(status) && WSTOPSIG(status) == SIGSTOP) - << "status = " << status; - - // Suppress the SIGSTOP and detach from the child. - ASSERT_THAT(ptrace(PTRACE_DETACH, child_pid, 0, 0), SyscallSucceeds()); - }); - - // The child should have been killed by its parent death SIGKILL. - int status; - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFSIGNALED(status) && WTERMSIG(status) == SIGKILL) - << "status = " << status; -} - -// This test is to validate that calling prctl with PR_SET_MM without the -// CAP_SYS_RESOURCE returns EPERM. -TEST(PrctlTest, InvalidPrSetMM) { - if (ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_RESOURCE))) { - ASSERT_NO_ERRNO(SetCapability(CAP_SYS_RESOURCE, - false)); // Drop capability to test below. - } - ASSERT_THAT(prctl(PR_SET_MM, 0, 0, 0, 0), SyscallFailsWithErrno(EPERM)); -} - -// Sanity check that dumpability is remembered. -TEST(PrctlTest, SetGetDumpability) { - int before; - ASSERT_THAT(before = prctl(PR_GET_DUMPABLE), SyscallSucceeds()); - auto cleanup = Cleanup([before] { - ASSERT_THAT(prctl(PR_SET_DUMPABLE, before), SyscallSucceeds()); - }); - - EXPECT_THAT(prctl(PR_SET_DUMPABLE, SUID_DUMP_DISABLE), SyscallSucceeds()); - EXPECT_THAT(prctl(PR_GET_DUMPABLE), - SyscallSucceedsWithValue(SUID_DUMP_DISABLE)); - - EXPECT_THAT(prctl(PR_SET_DUMPABLE, SUID_DUMP_USER), SyscallSucceeds()); - EXPECT_THAT(prctl(PR_GET_DUMPABLE), SyscallSucceedsWithValue(SUID_DUMP_USER)); -} - -// SUID_DUMP_ROOT cannot be set via PR_SET_DUMPABLE. -TEST(PrctlTest, RootDumpability) { - EXPECT_THAT(prctl(PR_SET_DUMPABLE, SUID_DUMP_ROOT), - SyscallFailsWithErrno(EINVAL)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor - -int main(int argc, char** argv) { - gvisor::testing::TestInit(&argc, &argv); - - if (absl::GetFlag(FLAGS_prctl_no_new_privs_test_child)) { - exit(gvisor::testing::kPrctlNoNewPrivsTestChildExitBase + - prctl(PR_GET_NO_NEW_PRIVS, 0, 0, 0, 0)); - } - - return RUN_ALL_TESTS(); -} diff --git a/test/syscalls/linux/prctl_setuid.cc b/test/syscalls/linux/prctl_setuid.cc deleted file mode 100644 index 30f0d75b3..000000000 --- a/test/syscalls/linux/prctl_setuid.cc +++ /dev/null @@ -1,268 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <sched.h> -#include <sys/prctl.h> - -#include <string> - -#include "gtest/gtest.h" -#include "absl/flags/flag.h" -#include "test/util/capability_util.h" -#include "test/util/logging.h" -#include "test/util/multiprocess_util.h" -#include "test/util/posix_error.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -ABSL_FLAG(int32_t, scratch_uid, 65534, "scratch UID"); -// This flag is used to verify that after an exec PR_GET_KEEPCAPS -// returns 0, the return code will be offset by kPrGetKeepCapsExitBase. -ABSL_FLAG(bool, prctl_pr_get_keepcaps, false, - "If true the test will verify that prctl with pr_get_keepcaps" - "returns 0. The test will exit with the result of that check."); - -// These tests exist seperately from prctl because we need to start -// them as root. Setuid() has the behavior that permissions are fully -// removed if one of the UIDs were 0 before a setuid() call. This -// behavior can be changed by using PR_SET_KEEPCAPS and that is what -// is tested here. -// -// Reference setuid(2): -// The setuid() function checks the effective user ID of -// the caller and if it is the superuser, all process-related user ID's -// are set to uid. After this has occurred, it is impossible for the -// program to regain root privileges. -// -// Thus, a set-user-ID-root program wishing to temporarily drop root -// privileges, assume the identity of an unprivileged user, and then -// regain root privileges afterward cannot use setuid(). You can -// accomplish this with seteuid(2). -namespace gvisor { -namespace testing { - -// Offset added to exit code from test child to distinguish from other abnormal -// exits. -constexpr int kPrGetKeepCapsExitBase = 100; - -namespace { - -class PrctlKeepCapsSetuidTest : public ::testing::Test { - protected: - void SetUp() override { - // PR_GET_KEEPCAPS will only return 0 or 1 (on success). - ASSERT_THAT(original_keepcaps_ = prctl(PR_GET_KEEPCAPS, 0, 0, 0, 0), - SyscallSucceeds()); - ASSERT_TRUE(original_keepcaps_ == 0 || original_keepcaps_ == 1); - } - - void TearDown() override { - // Restore PR_SET_KEEPCAPS. - ASSERT_THAT(prctl(PR_SET_KEEPCAPS, original_keepcaps_, 0, 0, 0), - SyscallSucceeds()); - - // Verify that it was restored. - ASSERT_THAT(prctl(PR_GET_KEEPCAPS, 0, 0, 0, 0), - SyscallSucceedsWithValue(original_keepcaps_)); - } - - // The original keep caps value exposed so tests can use it if they need. - int original_keepcaps_ = 0; -}; - -// This test will verify that a bad value, eg. not 0 or 1 for -// PR_SET_KEEPCAPS will return EINVAL as required by prctl(2). -TEST_F(PrctlKeepCapsSetuidTest, PrctlBadArgsToKeepCaps) { - ASSERT_THAT(prctl(PR_SET_KEEPCAPS, 2, 0, 0, 0), - SyscallFailsWithErrno(EINVAL)); -} - -// This test will verify that a setuid(2) without PR_SET_KEEPCAPS will cause -// all capabilities to be dropped. -TEST_F(PrctlKeepCapsSetuidTest, SetUidNoKeepCaps) { - // getuid(2) never fails. - if (getuid() != 0) { - SKIP_IF(!IsRunningOnGvisor()); - FAIL() << "User is not root on gvisor platform."; - } - - // Do setuid in a separate thread so that after finishing this test, the - // process can still open files the test harness created before starting - // this test. Otherwise, the files are created by root (UID before the - // test), but cannot be opened by the `uid` set below after the test. After - // calling setuid(non-zero-UID), there is no way to get root privileges - // back. - ScopedThread([] { - // Start by verifying we have a capability. - TEST_CHECK(HaveCapability(CAP_SYS_ADMIN).ValueOrDie()); - - // Verify that PR_GET_KEEPCAPS is disabled. - ASSERT_THAT(prctl(PR_GET_KEEPCAPS, 0, 0, 0, 0), - SyscallSucceedsWithValue(0)); - - // Use syscall instead of glibc setuid wrapper because we want this setuid - // call to only apply to this task. POSIX threads, however, require that - // all threads have the same UIDs, so using the setuid wrapper sets all - // threads' real UID. - EXPECT_THAT(syscall(SYS_setuid, absl::GetFlag(FLAGS_scratch_uid)), - SyscallSucceeds()); - - // Verify that we changed uid. - EXPECT_THAT(getuid(), - SyscallSucceedsWithValue(absl::GetFlag(FLAGS_scratch_uid))); - - // Verify we lost the capability in the effective set, this always happens. - TEST_CHECK(!HaveCapability(CAP_SYS_ADMIN).ValueOrDie()); - - // We should have also lost it in the permitted set by the setuid() so - // SetCapability should fail when we try to add it back to the effective set - ASSERT_FALSE(SetCapability(CAP_SYS_ADMIN, true).ok()); - }); -} - -// This test will verify that a setuid with PR_SET_KEEPCAPS will cause -// capabilities to be retained after we switch away from the root user. -TEST_F(PrctlKeepCapsSetuidTest, SetUidKeepCaps) { - // getuid(2) never fails. - if (getuid() != 0) { - SKIP_IF(!IsRunningOnGvisor()); - FAIL() << "User is not root on gvisor platform."; - } - - // Do setuid in a separate thread so that after finishing this test, the - // process can still open files the test harness created before starting - // this test. Otherwise, the files are created by root (UID before the - // test), but cannot be opened by the `uid` set below after the test. After - // calling setuid(non-zero-UID), there is no way to get root privileges - // back. - ScopedThread([] { - // Start by verifying we have a capability. - TEST_CHECK(HaveCapability(CAP_SYS_ADMIN).ValueOrDie()); - - // Set PR_SET_KEEPCAPS. - ASSERT_THAT(prctl(PR_SET_KEEPCAPS, 1, 0, 0, 0), SyscallSucceeds()); - - // Verify PR_SET_KEEPCAPS was set before we proceed. - ASSERT_THAT(prctl(PR_GET_KEEPCAPS, 0, 0, 0, 0), - SyscallSucceedsWithValue(1)); - - // Use syscall instead of glibc setuid wrapper because we want this setuid - // call to only apply to this task. POSIX threads, however, require that - // all threads have the same UIDs, so using the setuid wrapper sets all - // threads' real UID. - EXPECT_THAT(syscall(SYS_setuid, absl::GetFlag(FLAGS_scratch_uid)), - SyscallSucceeds()); - - // Verify that we changed uid. - EXPECT_THAT(getuid(), - SyscallSucceedsWithValue(absl::GetFlag(FLAGS_scratch_uid))); - - // Verify we lost the capability in the effective set, this always happens. - TEST_CHECK(!HaveCapability(CAP_SYS_ADMIN).ValueOrDie()); - - // We lost the capability in the effective set, but it will still - // exist in the permitted set so we can elevate the capability. - ASSERT_NO_ERRNO(SetCapability(CAP_SYS_ADMIN, true)); - - // Verify we got back the capability in the effective set. - TEST_CHECK(HaveCapability(CAP_SYS_ADMIN).ValueOrDie()); - }); -} - -// This test will verify that PR_SET_KEEPCAPS is not retained -// across an execve. According to prctl(2): -// "The "keep capabilities" value will be reset to 0 on subsequent -// calls to execve(2)." -TEST_F(PrctlKeepCapsSetuidTest, NoKeepCapsAfterExec) { - ASSERT_THAT(prctl(PR_SET_KEEPCAPS, 1, 0, 0, 0), SyscallSucceeds()); - - // Verify PR_SET_KEEPCAPS was set before we proceed. - ASSERT_THAT(prctl(PR_GET_KEEPCAPS, 0, 0, 0, 0), SyscallSucceedsWithValue(1)); - - pid_t child_pid = -1; - int execve_errno = 0; - // Do an exec and then verify that PR_GET_KEEPCAPS returns 0 - // see the body of main below. - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE(ForkAndExec( - "/proc/self/exe", {"/proc/self/exe", "--prctl_pr_get_keepcaps"}, {}, - nullptr, &child_pid, &execve_errno)); - - ASSERT_GT(child_pid, 0); - ASSERT_EQ(execve_errno, 0); - - int status = 0; - ASSERT_THAT(RetryEINTR(waitpid)(child_pid, &status, 0), SyscallSucceeds()); - ASSERT_TRUE(WIFEXITED(status)); - // PR_SET_KEEPCAPS should have been cleared by the exec. - // Success should return gvisor::testing::kPrGetKeepCapsExitBase + 0 - ASSERT_EQ(WEXITSTATUS(status), kPrGetKeepCapsExitBase); -} - -TEST_F(PrctlKeepCapsSetuidTest, NoKeepCapsAfterNewUserNamespace) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(CanCreateUserNamespace())); - - // Fork to avoid changing the user namespace of the original test process. - pid_t const child_pid = fork(); - - if (child_pid == 0) { - // Verify that the keepcaps flag is set to 0 when we change user namespaces. - TEST_PCHECK(prctl(PR_SET_KEEPCAPS, 1, 0, 0, 0) == 0); - MaybeSave(); - - TEST_PCHECK(prctl(PR_GET_KEEPCAPS, 0, 0, 0, 0) == 1); - MaybeSave(); - - TEST_PCHECK(unshare(CLONE_NEWUSER) == 0); - MaybeSave(); - - TEST_PCHECK(prctl(PR_GET_KEEPCAPS, 0, 0, 0, 0) == 0); - MaybeSave(); - - _exit(0); - } - - int status; - ASSERT_THAT(child_pid, SyscallSucceeds()); - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << "status = " << status; -} - -// This test will verify that PR_SET_KEEPCAPS and PR_GET_KEEPCAPS work correctly -TEST_F(PrctlKeepCapsSetuidTest, PrGetKeepCaps) { - // Set PR_SET_KEEPCAPS to the negation of the original. - ASSERT_THAT(prctl(PR_SET_KEEPCAPS, !original_keepcaps_, 0, 0, 0), - SyscallSucceeds()); - - // Verify it was set. - ASSERT_THAT(prctl(PR_GET_KEEPCAPS, 0, 0, 0, 0), - SyscallSucceedsWithValue(!original_keepcaps_)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor - -int main(int argc, char** argv) { - gvisor::testing::TestInit(&argc, &argv); - - if (absl::GetFlag(FLAGS_prctl_pr_get_keepcaps)) { - return gvisor::testing::kPrGetKeepCapsExitBase + - prctl(PR_GET_KEEPCAPS, 0, 0, 0, 0); - } - - return RUN_ALL_TESTS(); -} diff --git a/test/syscalls/linux/pread64.cc b/test/syscalls/linux/pread64.cc deleted file mode 100644 index 2cecf2e5f..000000000 --- a/test/syscalls/linux/pread64.cc +++ /dev/null @@ -1,151 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <fcntl.h> -#include <sys/mman.h> -#include <sys/socket.h> -#include <sys/types.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "test/util/file_descriptor.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -class Pread64Test : public ::testing::Test { - void SetUp() override { - name_ = NewTempAbsPath(); - ASSERT_NO_ERRNO_AND_VALUE(Open(name_, O_CREAT, 0644)); - } - - void TearDown() override { unlink(name_.c_str()); } - - public: - std::string name_; -}; - -TEST(Pread64TestNoTempFile, BadFileDescriptor) { - char buf[1024]; - EXPECT_THAT(pread64(-1, buf, 1024, 0), SyscallFailsWithErrno(EBADF)); -} - -TEST_F(Pread64Test, ZeroBuffer) { - const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(name_, O_RDWR)); - - char msg[] = "hello world"; - EXPECT_THAT(pwrite64(fd.get(), msg, strlen(msg), 0), - SyscallSucceedsWithValue(strlen(msg))); - - char buf[10]; - EXPECT_THAT(pread64(fd.get(), buf, 0, 0), SyscallSucceedsWithValue(0)); -} - -TEST_F(Pread64Test, BadBuffer) { - const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(name_, O_RDWR)); - - char msg[] = "hello world"; - EXPECT_THAT(pwrite64(fd.get(), msg, strlen(msg), 0), - SyscallSucceedsWithValue(strlen(msg))); - - char* bad_buffer = nullptr; - EXPECT_THAT(pread64(fd.get(), bad_buffer, 1024, 0), - SyscallFailsWithErrno(EFAULT)); -} - -TEST_F(Pread64Test, WriteOnlyNotReadable) { - const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(name_, O_WRONLY)); - - char buf[1024]; - EXPECT_THAT(pread64(fd.get(), buf, 1024, 0), SyscallFailsWithErrno(EBADF)); -} - -TEST_F(Pread64Test, DirNotReadable) { - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(GetAbsoluteTestTmpdir(), O_RDONLY)); - - char buf[1024]; - EXPECT_THAT(pread64(fd.get(), buf, 1024, 0), SyscallFailsWithErrno(EISDIR)); -} - -TEST_F(Pread64Test, BadOffset) { - const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(name_, O_RDONLY)); - - char buf[1024]; - EXPECT_THAT(pread64(fd.get(), buf, 1024, -1), SyscallFailsWithErrno(EINVAL)); -} - -TEST_F(Pread64Test, OffsetNotIncremented) { - const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(name_, O_RDWR)); - - char msg[] = "hello world"; - EXPECT_THAT(write(fd.get(), msg, strlen(msg)), - SyscallSucceedsWithValue(strlen(msg))); - int offset; - EXPECT_THAT(offset = lseek(fd.get(), 0, SEEK_CUR), SyscallSucceeds()); - - char buf1[1024]; - EXPECT_THAT(pread64(fd.get(), buf1, 1024, 0), - SyscallSucceedsWithValue(strlen(msg))); - EXPECT_THAT(lseek(fd.get(), 0, SEEK_CUR), SyscallSucceedsWithValue(offset)); - - char buf2[1024]; - EXPECT_THAT(pread64(fd.get(), buf2, 1024, 3), - SyscallSucceedsWithValue(strlen(msg) - 3)); - EXPECT_THAT(lseek(fd.get(), 0, SEEK_CUR), SyscallSucceedsWithValue(offset)); -} - -TEST_F(Pread64Test, EndOfFile) { - const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(name_, O_RDONLY)); - - char buf[1024]; - EXPECT_THAT(pread64(fd.get(), buf, 1024, 0), SyscallSucceedsWithValue(0)); -} - -TEST(Pread64TestNoTempFile, CantReadSocketPair_NoRandomSave) { - int sock_fds[2]; - EXPECT_THAT(socketpair(AF_UNIX, SOCK_STREAM, 0, sock_fds), SyscallSucceeds()); - - char buf[1024]; - EXPECT_THAT(pread64(sock_fds[0], buf, 1024, 0), - SyscallFailsWithErrno(ESPIPE)); - EXPECT_THAT(pread64(sock_fds[1], buf, 1024, 0), - SyscallFailsWithErrno(ESPIPE)); - - EXPECT_THAT(close(sock_fds[0]), SyscallSucceeds()); - EXPECT_THAT(close(sock_fds[1]), SyscallSucceeds()); -} - -TEST(Pread64TestNoTempFile, CantReadPipe) { - char buf[1024]; - - int pipe_fds[2]; - EXPECT_THAT(pipe(pipe_fds), SyscallSucceeds()); - - EXPECT_THAT(pread64(pipe_fds[0], buf, 1024, 0), - SyscallFailsWithErrno(ESPIPE)); - - EXPECT_THAT(close(pipe_fds[0]), SyscallSucceeds()); - EXPECT_THAT(close(pipe_fds[1]), SyscallSucceeds()); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/preadv.cc b/test/syscalls/linux/preadv.cc deleted file mode 100644 index 5b0743fe9..000000000 --- a/test/syscalls/linux/preadv.cc +++ /dev/null @@ -1,95 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <sys/syscall.h> -#include <sys/types.h> -#include <sys/uio.h> -#include <sys/wait.h> -#include <unistd.h> - -#include <atomic> -#include <string> - -#include "gtest/gtest.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/util/file_descriptor.h" -#include "test/util/logging.h" -#include "test/util/memory_util.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" -#include "test/util/timer_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -// Stress copy-on-write. Attempts to reproduce b/38430174. -TEST(PreadvTest, MMConcurrencyStress) { - // Fill a one-page file with zeroes (the contents don't really matter). - const auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - /* parent = */ GetAbsoluteTestTmpdir(), - /* content = */ std::string(kPageSize, 0), TempPath::kDefaultFileMode)); - const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(f.path(), O_RDONLY)); - - // Get a one-page private mapping to read to. - const Mapping m = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE)); - - // Repeatedly fork in a separate thread to force the mapping to become - // copy-on-write. - std::atomic<bool> done(false); - const ScopedThread t([&] { - while (!done.load()) { - const pid_t pid = fork(); - TEST_CHECK(pid >= 0); - if (pid == 0) { - // In child. The parent was obviously multithreaded, so it's neither - // safe nor necessary to do much more than exit. - syscall(SYS_exit_group, 0); - } - int status; - ASSERT_THAT(RetryEINTR(waitpid)(pid, &status, 0), - SyscallSucceedsWithValue(pid)); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << "status = " << status; - } - }); - - // Repeatedly read to the mapping. - struct iovec iov[2]; - iov[0].iov_base = m.ptr(); - iov[0].iov_len = kPageSize / 2; - iov[1].iov_base = reinterpret_cast<void*>(m.addr() + kPageSize / 2); - iov[1].iov_len = kPageSize / 2; - constexpr absl::Duration kTestDuration = absl::Seconds(5); - const absl::Time end = absl::Now() + kTestDuration; - while (absl::Now() < end) { - // Among other causes, save/restore cycles may cause interruptions resulting - // in partial reads, so we don't expect any particular return value. - EXPECT_THAT(RetryEINTR(preadv)(fd.get(), iov, 2, 0), SyscallSucceeds()); - } - - // Stop the other thread. - done.store(true); - - // The test passes if it neither deadlocks nor crashes the OS. -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/preadv2.cc b/test/syscalls/linux/preadv2.cc deleted file mode 100644 index 4a9acd7ae..000000000 --- a/test/syscalls/linux/preadv2.cc +++ /dev/null @@ -1,280 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <fcntl.h> -#include <sys/syscall.h> -#include <sys/types.h> -#include <sys/uio.h> - -#include <string> -#include <vector> - -#include "gtest/gtest.h" -#include "absl/memory/memory.h" -#include "test/syscalls/linux/file_base.h" -#include "test/util/file_descriptor.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -#ifndef SYS_preadv2 -#if defined(__x86_64__) -#define SYS_preadv2 327 -#elif defined(__aarch64__) -#define SYS_preadv2 286 -#else -#error "Unknown architecture" -#endif -#endif // SYS_preadv2 - -#ifndef RWF_HIPRI -#define RWF_HIPRI 0x1 -#endif // RWF_HIPRI - -constexpr int kBufSize = 1024; - -std::string SetContent() { - std::string content; - for (int i = 0; i < kBufSize; i++) { - content += static_cast<char>((i % 10) + '0'); - } - return content; -} - -ssize_t preadv2(unsigned long fd, const struct iovec* iov, unsigned long iovcnt, - off_t offset, unsigned long flags) { - // syscall on preadv2 does some weird things (see man syscall and search - // preadv2), so we insert a 0 to word align the flags argument on native. - return syscall(SYS_preadv2, fd, iov, iovcnt, offset, 0, flags); -} - -// This test is the base case where we call preadv (no offset, no flags). -TEST(Preadv2Test, TestBaseCall) { - SKIP_IF(preadv2(-1, nullptr, 0, 0, 0) < 0 && errno == ENOSYS); - - std::string content = SetContent(); - - const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), content, TempPath::kDefaultFileMode)); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDONLY)); - - std::vector<char> buf(kBufSize); - struct iovec iov[2]; - iov[0].iov_base = buf.data(); - iov[0].iov_len = buf.size() / 2; - iov[1].iov_base = static_cast<char*>(iov[0].iov_base) + (content.size() / 2); - iov[1].iov_len = content.size() / 2; - - EXPECT_THAT(preadv2(fd.get(), iov, /*iovcnt*/ 2, /*offset=*/0, /*flags=*/0), - SyscallSucceedsWithValue(kBufSize)); - - EXPECT_EQ(content, std::string(buf.data(), buf.size())); -} - -// This test is where we call preadv with an offset and no flags. -TEST(Preadv2Test, TestValidPositiveOffset) { - SKIP_IF(preadv2(-1, nullptr, 0, 0, 0) < 0 && errno == ENOSYS); - - std::string content = SetContent(); - const std::string prefix = "0"; - - const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), prefix + content, TempPath::kDefaultFileMode)); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDONLY)); - - std::vector<char> buf(kBufSize, '0'); - struct iovec iov; - iov.iov_base = buf.data(); - iov.iov_len = buf.size(); - - EXPECT_THAT(preadv2(fd.get(), &iov, /*iovcnt=*/1, /*offset=*/prefix.size(), - /*flags=*/0), - SyscallSucceedsWithValue(kBufSize)); - - EXPECT_THAT(lseek(fd.get(), 0, SEEK_CUR), SyscallSucceedsWithValue(0)); - - EXPECT_EQ(content, std::string(buf.data(), buf.size())); -} - -// This test is the base case where we call readv by using -1 as the offset. The -// read should use the file offset, so the test increments it by one prior to -// calling preadv2. -TEST(Preadv2Test, TestNegativeOneOffset) { - SKIP_IF(preadv2(-1, nullptr, 0, 0, 0) < 0 && errno == ENOSYS); - - std::string content = SetContent(); - const std::string prefix = "231"; - - const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), prefix + content, TempPath::kDefaultFileMode)); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDONLY)); - - ASSERT_THAT(lseek(fd.get(), prefix.size(), SEEK_SET), - SyscallSucceedsWithValue(prefix.size())); - - std::vector<char> buf(kBufSize, '0'); - struct iovec iov; - iov.iov_base = buf.data(); - iov.iov_len = buf.size(); - - EXPECT_THAT(preadv2(fd.get(), &iov, /*iovcnt=*/1, /*offset=*/-1, /*flags=*/0), - SyscallSucceedsWithValue(kBufSize)); - - EXPECT_THAT(lseek(fd.get(), 0, SEEK_CUR), - SyscallSucceedsWithValue(prefix.size() + buf.size())); - - EXPECT_EQ(content, std::string(buf.data(), buf.size())); -} - -// preadv2 requires if the RWF_HIPRI flag is passed, the fd must be opened with -// O_DIRECT. This test implements a correct call with the RWF_HIPRI flag. -TEST(Preadv2Test, TestCallWithRWF_HIPRI) { - SKIP_IF(preadv2(-1, nullptr, 0, 0, 0) < 0 && errno == ENOSYS); - - std::string content = SetContent(); - - const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), content, TempPath::kDefaultFileMode)); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDONLY)); - - EXPECT_THAT(fsync(fd.get()), SyscallSucceeds()); - - std::vector<char> buf(kBufSize, '0'); - struct iovec iov; - iov.iov_base = buf.data(); - iov.iov_len = buf.size(); - - EXPECT_THAT( - preadv2(fd.get(), &iov, /*iovcnt=*/1, /*offset=*/0, /*flags=*/RWF_HIPRI), - SyscallSucceedsWithValue(kBufSize)); - - EXPECT_THAT(lseek(fd.get(), 0, SEEK_CUR), SyscallSucceedsWithValue(0)); - - EXPECT_EQ(content, std::string(buf.data(), buf.size())); -} -// This test calls preadv2 with an invalid flag. -TEST(Preadv2Test, TestInvalidFlag) { - SKIP_IF(preadv2(-1, nullptr, 0, 0, 0) < 0 && errno == ENOSYS); - - const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), "", TempPath::kDefaultFileMode)); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDONLY | O_DIRECT)); - - std::vector<char> buf(kBufSize, '0'); - struct iovec iov; - iov.iov_base = buf.data(); - iov.iov_len = buf.size(); - - EXPECT_THAT(preadv2(fd.get(), &iov, /*iovcnt=*/1, - /*offset=*/0, /*flags=*/0xF0), - SyscallFailsWithErrno(EOPNOTSUPP)); -} - -// This test calls preadv2 with an invalid offset. -TEST(Preadv2Test, TestInvalidOffset) { - SKIP_IF(preadv2(-1, nullptr, 0, 0, 0) < 0 && errno == ENOSYS); - - const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), "", TempPath::kDefaultFileMode)); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDONLY | O_DIRECT)); - - auto iov = absl::make_unique<struct iovec[]>(1); - iov[0].iov_base = nullptr; - iov[0].iov_len = 0; - - EXPECT_THAT(preadv2(fd.get(), iov.get(), /*iovcnt=*/1, /*offset=*/-8, - /*flags=*/0), - SyscallFailsWithErrno(EINVAL)); -} - -// This test calls preadv with a file set O_WRONLY. -TEST(Preadv2Test, TestUnreadableFile) { - SKIP_IF(preadv2(-1, nullptr, 0, 0, 0) < 0 && errno == ENOSYS); - - const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), "", TempPath::kDefaultFileMode)); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_WRONLY)); - - auto iov = absl::make_unique<struct iovec[]>(1); - iov[0].iov_base = nullptr; - iov[0].iov_len = 0; - - EXPECT_THAT(preadv2(fd.get(), iov.get(), /*iovcnt=*/1, - /*offset=*/0, /*flags=*/0), - SyscallFailsWithErrno(EBADF)); -} - -// Calling preadv2 with a non-negative offset calls preadv. Calling preadv with -// an unseekable file is not allowed. A pipe is used for an unseekable file. -TEST(Preadv2Test, TestUnseekableFileInvalid) { - SKIP_IF(preadv2(-1, nullptr, 0, 0, 0) < 0 && errno == ENOSYS); - - int pipe_fds[2]; - - ASSERT_THAT(pipe(pipe_fds), SyscallSucceeds()); - - auto iov = absl::make_unique<struct iovec[]>(1); - iov[0].iov_base = nullptr; - iov[0].iov_len = 0; - - EXPECT_THAT(preadv2(pipe_fds[0], iov.get(), /*iovcnt=*/1, - /*offset=*/2, /*flags=*/0), - SyscallFailsWithErrno(ESPIPE)); - - EXPECT_THAT(close(pipe_fds[0]), SyscallSucceeds()); - EXPECT_THAT(close(pipe_fds[1]), SyscallSucceeds()); -} - -TEST(Preadv2Test, TestUnseekableFileValid) { - SKIP_IF(preadv2(-1, nullptr, 0, 0, 0) < 0 && errno == ENOSYS); - - int pipe_fds[2]; - - ASSERT_THAT(pipe(pipe_fds), SyscallSucceeds()); - - std::vector<char> content(32, 'X'); - - EXPECT_THAT(write(pipe_fds[1], content.data(), content.size()), - SyscallSucceedsWithValue(content.size())); - - std::vector<char> buf(content.size()); - auto iov = absl::make_unique<struct iovec[]>(1); - iov[0].iov_base = buf.data(); - iov[0].iov_len = buf.size(); - - EXPECT_THAT(preadv2(pipe_fds[0], iov.get(), /*iovcnt=*/1, - /*offset=*/static_cast<off_t>(-1), /*flags=*/0), - SyscallSucceedsWithValue(buf.size())); - - EXPECT_EQ(content, buf); - - EXPECT_THAT(close(pipe_fds[0]), SyscallSucceeds()); - EXPECT_THAT(close(pipe_fds[1]), SyscallSucceeds()); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/priority.cc b/test/syscalls/linux/priority.cc deleted file mode 100644 index 1d9bdfa70..000000000 --- a/test/syscalls/linux/priority.cc +++ /dev/null @@ -1,216 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <sys/resource.h> -#include <sys/time.h> -#include <sys/types.h> -#include <unistd.h> - -#include <string> -#include <vector> - -#include "gtest/gtest.h" -#include "absl/strings/numbers.h" -#include "absl/strings/str_split.h" -#include "test/util/capability_util.h" -#include "test/util/fs_util.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -// These tests are for both the getpriority(2) and setpriority(2) syscalls -// These tests are very rudimentary because getpriority and setpriority -// have not yet been fully implemented. - -// Getpriority does something -TEST(GetpriorityTest, Implemented) { - // "getpriority() can legitimately return the value -1, it is necessary to - // clear the external variable errno prior to the call" - errno = 0; - EXPECT_THAT(getpriority(PRIO_PROCESS, /*who=*/0), SyscallSucceeds()); -} - -// Invalid which -TEST(GetpriorityTest, InvalidWhich) { - errno = 0; - EXPECT_THAT(getpriority(/*which=*/3, /*who=*/0), - SyscallFailsWithErrno(EINVAL)); -} - -// Process is found when which=PRIO_PROCESS -TEST(GetpriorityTest, ValidWho) { - errno = 0; - EXPECT_THAT(getpriority(PRIO_PROCESS, getpid()), SyscallSucceeds()); -} - -// Process is not found when which=PRIO_PROCESS -TEST(GetpriorityTest, InvalidWho) { - errno = 0; - // Flaky, but it's tough to avoid a race condition when finding an unused pid - EXPECT_THAT(getpriority(PRIO_PROCESS, /*who=*/INT_MAX - 1), - SyscallFailsWithErrno(ESRCH)); -} - -// Setpriority does something -TEST(SetpriorityTest, Implemented) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_NICE))); - - // No need to clear errno for setpriority(): - // "The setpriority() call returns 0 if there is no error, or -1 if there is" - EXPECT_THAT(setpriority(PRIO_PROCESS, /*who=*/0, /*nice=*/16), - SyscallSucceeds()); -} - -// Invalid which -TEST(Setpriority, InvalidWhich) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_NICE))); - - EXPECT_THAT(setpriority(/*which=*/3, /*who=*/0, /*nice=*/16), - SyscallFailsWithErrno(EINVAL)); -} - -// Process is found when which=PRIO_PROCESS -TEST(SetpriorityTest, ValidWho) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_NICE))); - - EXPECT_THAT(setpriority(PRIO_PROCESS, getpid(), /*nice=*/16), - SyscallSucceeds()); -} - -// niceval is within the range [-20, 19] -TEST(SetpriorityTest, InsideRange) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_NICE))); - - // Set 0 < niceval < 19 - int nice = 12; - EXPECT_THAT(setpriority(PRIO_PROCESS, getpid(), nice), SyscallSucceeds()); - - errno = 0; - EXPECT_THAT(getpriority(PRIO_PROCESS, getpid()), - SyscallSucceedsWithValue(nice)); - - // Set -20 < niceval < 0 - nice = -12; - EXPECT_THAT(setpriority(PRIO_PROCESS, getpid(), nice), SyscallSucceeds()); - - errno = 0; - EXPECT_THAT(getpriority(PRIO_PROCESS, getpid()), - SyscallSucceedsWithValue(nice)); -} - -// Verify that priority/niceness are exposed via /proc/PID/stat. -TEST(SetpriorityTest, NicenessExposedViaProcfs) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_NICE))); - - constexpr int kNiceVal = 12; - ASSERT_THAT(setpriority(PRIO_PROCESS, getpid(), kNiceVal), SyscallSucceeds()); - - errno = 0; - ASSERT_THAT(getpriority(PRIO_PROCESS, getpid()), - SyscallSucceedsWithValue(kNiceVal)); - - // Now verify we can read that same value via /proc/self/stat. - std::string proc_stat; - ASSERT_NO_ERRNO(GetContents("/proc/self/stat", &proc_stat)); - std::vector<std::string> pieces = absl::StrSplit(proc_stat, ' '); - ASSERT_GT(pieces.size(), 20); - - int niceness_procfs = 0; - ASSERT_TRUE(absl::SimpleAtoi(pieces[18], &niceness_procfs)); - EXPECT_EQ(niceness_procfs, kNiceVal); -} - -// In the kernel's implementation, values outside the range of [-20, 19] are -// truncated to these minimum and maximum values. See -// https://elixir.bootlin.com/linux/v4.4/source/kernel/sys.c#L190 -TEST(SetpriorityTest, OutsideRange) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_NICE))); - - // Set niceval > 19 - EXPECT_THAT(setpriority(PRIO_PROCESS, getpid(), /*nice=*/100), - SyscallSucceeds()); - - errno = 0; - // Test niceval truncated to 19 - EXPECT_THAT(getpriority(PRIO_PROCESS, getpid()), - SyscallSucceedsWithValue(/*maxnice=*/19)); - - // Set niceval < -20 - EXPECT_THAT(setpriority(PRIO_PROCESS, getpid(), /*nice=*/-100), - SyscallSucceeds()); - - errno = 0; - // Test niceval truncated to -20 - EXPECT_THAT(getpriority(PRIO_PROCESS, getpid()), - SyscallSucceedsWithValue(/*minnice=*/-20)); -} - -// Process is not found when which=PRIO_PROCESS -TEST(SetpriorityTest, InvalidWho) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_NICE))); - - // Flaky, but it's tough to avoid a race condition when finding an unused pid - EXPECT_THAT(setpriority(PRIO_PROCESS, - /*who=*/INT_MAX - 1, - /*nice=*/16), - SyscallFailsWithErrno(ESRCH)); -} - -// Nice succeeds, correctly modifies (or in this case does not -// modify priority of process -TEST(SetpriorityTest, NiceSucceeds) { - errno = 0; - const int priority_before = getpriority(PRIO_PROCESS, /*who=*/0); - ASSERT_THAT(nice(/*inc=*/0), SyscallSucceeds()); - - // nice(0) should not change priority - EXPECT_EQ(priority_before, getpriority(PRIO_PROCESS, /*who=*/0)); -} - -// Threads resulting from clone() maintain parent's priority -// Changes to child priority do not affect parent's priority -TEST(GetpriorityTest, CloneMaintainsPriority) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_NICE))); - - constexpr int kParentPriority = 16; - constexpr int kChildPriority = 14; - ASSERT_THAT(setpriority(PRIO_PROCESS, getpid(), kParentPriority), - SyscallSucceeds()); - - ScopedThread th([]() { - // Check that priority equals that of parent thread - pid_t my_tid; - EXPECT_THAT(my_tid = syscall(__NR_gettid), SyscallSucceeds()); - EXPECT_THAT(getpriority(PRIO_PROCESS, my_tid), - SyscallSucceedsWithValue(kParentPriority)); - - // Change the child thread's priority - EXPECT_THAT(setpriority(PRIO_PROCESS, my_tid, kChildPriority), - SyscallSucceeds()); - }); - th.Join(); - - // Check that parent's priority reemained the same even though - // the child's priority was altered - EXPECT_EQ(kParentPriority, getpriority(PRIO_PROCESS, syscall(__NR_gettid))); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/priority_execve.cc b/test/syscalls/linux/priority_execve.cc deleted file mode 100644 index 5cb343bad..000000000 --- a/test/syscalls/linux/priority_execve.cc +++ /dev/null @@ -1,42 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <stdio.h> -#include <stdlib.h> -#include <sys/resource.h> -#include <sys/time.h> -#include <sys/types.h> -#include <unistd.h> - -int main(int argc, char** argv, char** envp) { - errno = 0; - int prio = getpriority(PRIO_PROCESS, getpid()); - - // NOTE: getpriority() can legitimately return negative values - // in the range [-20, 0). If errno is set, exit with a value that - // could not be reached by a valid priority. Valid exit values - // for the test are in the range [1, 40], so we'll use 0. - if (errno != 0) { - printf("getpriority() failed with errno = %d\n", errno); - exit(0); - } - - // Used by test to verify priority is being maintained through - // calls to execve(). Since prio should always be in the range - // [-20, 19], we offset by 20 so as not to have negative exit codes. - exit(20 - prio); - - return 0; -} diff --git a/test/syscalls/linux/proc.cc b/test/syscalls/linux/proc.cc deleted file mode 100644 index a23fdb58d..000000000 --- a/test/syscalls/linux/proc.cc +++ /dev/null @@ -1,2080 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <elf.h> -#include <errno.h> -#include <fcntl.h> -#include <limits.h> -#include <sched.h> -#include <signal.h> -#include <stddef.h> -#include <stdint.h> -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <sys/mman.h> -#include <sys/prctl.h> -#include <sys/stat.h> -#include <sys/utsname.h> -#include <syscall.h> -#include <unistd.h> - -#include <algorithm> -#include <atomic> -#include <functional> -#include <iostream> -#include <map> -#include <memory> -#include <ostream> -#include <regex> -#include <string> -#include <unordered_set> -#include <utility> -#include <vector> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "absl/strings/ascii.h" -#include "absl/strings/match.h" -#include "absl/strings/numbers.h" -#include "absl/strings/str_cat.h" -#include "absl/strings/str_split.h" -#include "absl/strings/string_view.h" -#include "absl/synchronization/mutex.h" -#include "absl/synchronization/notification.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/util/capability_util.h" -#include "test/util/cleanup.h" -#include "test/util/file_descriptor.h" -#include "test/util/fs_util.h" -#include "test/util/memory_util.h" -#include "test/util/posix_error.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" -#include "test/util/time_util.h" -#include "test/util/timer_util.h" - -// NOTE(magi): No, this isn't really a syscall but this is a really simple -// way to get it tested on both gVisor, PTrace and Linux. - -using ::testing::AllOf; -using ::testing::AnyOf; -using ::testing::ContainerEq; -using ::testing::Contains; -using ::testing::ContainsRegex; -using ::testing::Eq; -using ::testing::Gt; -using ::testing::HasSubstr; -using ::testing::IsSupersetOf; -using ::testing::Pair; -using ::testing::UnorderedElementsAre; -using ::testing::UnorderedElementsAreArray; - -// Exported by glibc. -extern char** environ; - -namespace gvisor { -namespace testing { -namespace { - -#ifndef SUID_DUMP_DISABLE -#define SUID_DUMP_DISABLE 0 -#endif /* SUID_DUMP_DISABLE */ -#ifndef SUID_DUMP_USER -#define SUID_DUMP_USER 1 -#endif /* SUID_DUMP_USER */ -#ifndef SUID_DUMP_ROOT -#define SUID_DUMP_ROOT 2 -#endif /* SUID_DUMP_ROOT */ - -#if defined(__x86_64__) || defined(__i386__) -// This list of "required" fields is taken from reading the file -// arch/x86/kernel/cpu/proc.c and seeing which fields will be unconditionally -// printed by the kernel. -static const char* required_fields[] = { - "processor", - "vendor_id", - "cpu family", - "model\t\t:", - "model name", - "stepping", - "cpu MHz", - "fpu\t\t:", - "fpu_exception", - "cpuid level", - "wp", - "bogomips", - "clflush size", - "cache_alignment", - "address sizes", - "power management", -}; -#elif __aarch64__ -// This list of "required" fields is taken from reading the file -// arch/arm64/kernel/cpuinfo.c and seeing which fields will be unconditionally -// printed by the kernel. -static const char* required_fields[] = { - "processor", "BogoMIPS", "Features", "CPU implementer", - "CPU architecture", "CPU variant", "CPU part", "CPU revision", -}; -#else -#error "Unknown architecture" -#endif - -// Takes the subprocess command line and pid. -// If it returns !OK, WithSubprocess returns immediately. -using SubprocessCallback = std::function<PosixError(int)>; - -std::vector<std::string> saved_argv; // NOLINT - -// Helper function to dump /proc/{pid}/status and check the -// state data. State should = "Z" for zombied or "RSD" for -// running, interruptible sleeping (S), or uninterruptible sleep -// (D). -void CompareProcessState(absl::string_view state, int pid) { - auto status_file = ASSERT_NO_ERRNO_AND_VALUE( - GetContents(absl::StrCat("/proc/", pid, "/status"))); - // N.B. POSIX extended regexes don't support shorthand character classes (\w) - // inside of brackets. - EXPECT_THAT(status_file, - ContainsRegex(absl::StrCat("State:.[", state, - R"EOL(]\s+\([a-zA-Z ]+\))EOL"))); -} - -// Run callbacks while a subprocess is running, zombied, and/or exited. -PosixError WithSubprocess(SubprocessCallback const& running, - SubprocessCallback const& zombied, - SubprocessCallback const& exited) { - int pipe_fds[2] = {}; - if (pipe(pipe_fds) < 0) { - return PosixError(errno, "pipe"); - } - - int child_pid = fork(); - if (child_pid < 0) { - return PosixError(errno, "fork"); - } - - if (child_pid == 0) { - close(pipe_fds[0]); // Close the read end. - const DisableSave ds; // Timing issues. - - // Write to the pipe to tell it we're ready. - char buf = 'a'; - int res = 0; - res = WriteFd(pipe_fds[1], &buf, sizeof(buf)); - TEST_CHECK_MSG(res == sizeof(buf), "Write failure in subprocess"); - - while (true) { - SleepSafe(absl::Milliseconds(100)); - } - } - - close(pipe_fds[1]); // Close the write end. - - int status = 0; - auto wait_cleanup = Cleanup([child_pid, &status] { - EXPECT_THAT(waitpid(child_pid, &status, 0), SyscallSucceeds()); - }); - auto kill_cleanup = Cleanup([child_pid] { - EXPECT_THAT(kill(child_pid, SIGKILL), SyscallSucceeds()); - }); - - // Wait for the child. - char buf = 0; - int res = ReadFd(pipe_fds[0], &buf, sizeof(buf)); - if (res < 0) { - return PosixError(errno, "Read from pipe"); - } else if (res == 0) { - return PosixError(EPIPE, "Unable to read from pipe: EOF"); - } - - if (running) { - // The first arg, RSD, refers to a "running process", or a process with a - // state of Running (R), Interruptable Sleep (S) or Uninterruptable - // Sleep (D). - CompareProcessState("RSD", child_pid); - RETURN_IF_ERRNO(running(child_pid)); - } - - // Kill the process. - kill_cleanup.Release()(); - siginfo_t info; - // Wait until the child process has exited (WEXITED flag) but don't - // reap the child (WNOWAIT flag). - EXPECT_THAT(waitid(P_PID, child_pid, &info, WNOWAIT | WEXITED), - SyscallSucceeds()); - - if (zombied) { - // Arg of "Z" refers to a Zombied Process. - CompareProcessState("Z", child_pid); - RETURN_IF_ERRNO(zombied(child_pid)); - } - - // Wait on the process. - wait_cleanup.Release()(); - // If the process is reaped, then then this should return - // with ECHILD. - EXPECT_THAT(waitpid(child_pid, &status, WNOHANG), - SyscallFailsWithErrno(ECHILD)); - - if (exited) { - RETURN_IF_ERRNO(exited(child_pid)); - } - - return NoError(); -} - -// Access the file returned by name when a subprocess is running. -PosixError AccessWhileRunning(std::function<std::string(int pid)> name, - int flags, std::function<void(int fd)> access) { - FileDescriptor fd; - return WithSubprocess( - [&](int pid) -> PosixError { - // Running. - ASSIGN_OR_RETURN_ERRNO(fd, Open(name(pid), flags)); - - access(fd.get()); - return NoError(); - }, - nullptr, nullptr); -} - -// Access the file returned by name when the a subprocess is zombied. -PosixError AccessWhileZombied(std::function<std::string(int pid)> name, - int flags, std::function<void(int fd)> access) { - FileDescriptor fd; - return WithSubprocess( - [&](int pid) -> PosixError { - // Running. - ASSIGN_OR_RETURN_ERRNO(fd, Open(name(pid), flags)); - return NoError(); - }, - [&](int pid) -> PosixError { - // Zombied. - access(fd.get()); - return NoError(); - }, - nullptr); -} - -// Access the file returned by name when the a subprocess is exited. -PosixError AccessWhileExited(std::function<std::string(int pid)> name, - int flags, std::function<void(int fd)> access) { - FileDescriptor fd; - return WithSubprocess( - [&](int pid) -> PosixError { - // Running. - ASSIGN_OR_RETURN_ERRNO(fd, Open(name(pid), flags)); - return NoError(); - }, - nullptr, - [&](int pid) -> PosixError { - // Exited. - access(fd.get()); - return NoError(); - }); -} - -// ReadFd(fd=/proc/PID/basename) while PID is running. -int ReadWhileRunning(std::string const& basename, void* buf, size_t count) { - int ret = 0; - int err = 0; - EXPECT_NO_ERRNO(AccessWhileRunning( - [&](int pid) -> std::string { - return absl::StrCat("/proc/", pid, "/", basename); - }, - O_RDONLY, - [&](int fd) { - ret = ReadFd(fd, buf, count); - err = errno; - })); - errno = err; - return ret; -} - -// ReadFd(fd=/proc/PID/basename) while PID is zombied. -int ReadWhileZombied(std::string const& basename, void* buf, size_t count) { - int ret = 0; - int err = 0; - EXPECT_NO_ERRNO(AccessWhileZombied( - [&](int pid) -> std::string { - return absl::StrCat("/proc/", pid, "/", basename); - }, - O_RDONLY, - [&](int fd) { - ret = ReadFd(fd, buf, count); - err = errno; - })); - errno = err; - return ret; -} - -// ReadFd(fd=/proc/PID/basename) while PID is exited. -int ReadWhileExited(std::string const& basename, void* buf, size_t count) { - int ret = 0; - int err = 0; - EXPECT_NO_ERRNO(AccessWhileExited( - [&](int pid) -> std::string { - return absl::StrCat("/proc/", pid, "/", basename); - }, - O_RDONLY, - [&](int fd) { - ret = ReadFd(fd, buf, count); - err = errno; - })); - errno = err; - return ret; -} - -// readlinkat(fd=/proc/PID/, basename) while PID is running. -int ReadlinkWhileRunning(std::string const& basename, char* buf, size_t count) { - int ret = 0; - int err = 0; - EXPECT_NO_ERRNO(AccessWhileRunning( - [&](int pid) -> std::string { return absl::StrCat("/proc/", pid, "/"); }, - O_DIRECTORY, - [&](int fd) { - ret = readlinkat(fd, basename.c_str(), buf, count); - err = errno; - })); - errno = err; - return ret; -} - -// readlinkat(fd=/proc/PID/, basename) while PID is zombied. -int ReadlinkWhileZombied(std::string const& basename, char* buf, size_t count) { - int ret = 0; - int err = 0; - EXPECT_NO_ERRNO(AccessWhileZombied( - [&](int pid) -> std::string { return absl::StrCat("/proc/", pid, "/"); }, - O_DIRECTORY, - [&](int fd) { - ret = readlinkat(fd, basename.c_str(), buf, count); - err = errno; - })); - errno = err; - return ret; -} - -// readlinkat(fd=/proc/PID/, basename) while PID is exited. -int ReadlinkWhileExited(std::string const& basename, char* buf, size_t count) { - int ret = 0; - int err = 0; - EXPECT_NO_ERRNO(AccessWhileExited( - [&](int pid) -> std::string { return absl::StrCat("/proc/", pid, "/"); }, - O_DIRECTORY, - [&](int fd) { - ret = readlinkat(fd, basename.c_str(), buf, count); - err = errno; - })); - errno = err; - return ret; -} - -TEST(ProcTest, NotFoundInRoot) { - struct stat s; - EXPECT_THAT(stat("/proc/foobar", &s), SyscallFailsWithErrno(ENOENT)); -} - -TEST(ProcSelfTest, IsThreadGroupLeader) { - ScopedThread([] { - const pid_t tgid = getpid(); - const pid_t tid = syscall(SYS_gettid); - EXPECT_NE(tgid, tid); - auto link = ASSERT_NO_ERRNO_AND_VALUE(ReadLink("/proc/self")); - EXPECT_EQ(link, absl::StrCat(tgid)); - }); -} - -TEST(ProcThreadSelfTest, Basic) { - const pid_t tgid = getpid(); - const pid_t tid = syscall(SYS_gettid); - EXPECT_EQ(tgid, tid); - auto link_threadself = - ASSERT_NO_ERRNO_AND_VALUE(ReadLink("/proc/thread-self")); - EXPECT_EQ(link_threadself, absl::StrCat(tgid, "/task/", tid)); - // Just read one file inside thread-self to ensure that the link is valid. - auto link_threadself_exe = - ASSERT_NO_ERRNO_AND_VALUE(ReadLink("/proc/thread-self/exe")); - auto link_procself_exe = - ASSERT_NO_ERRNO_AND_VALUE(ReadLink("/proc/self/exe")); - EXPECT_EQ(link_threadself_exe, link_procself_exe); -} - -TEST(ProcThreadSelfTest, Thread) { - ScopedThread([] { - const pid_t tgid = getpid(); - const pid_t tid = syscall(SYS_gettid); - EXPECT_NE(tgid, tid); - auto link_threadself = - ASSERT_NO_ERRNO_AND_VALUE(ReadLink("/proc/thread-self")); - - EXPECT_EQ(link_threadself, absl::StrCat(tgid, "/task/", tid)); - // Just read one file inside thread-self to ensure that the link is valid. - auto link_threadself_exe = - ASSERT_NO_ERRNO_AND_VALUE(ReadLink("/proc/thread-self/exe")); - auto link_procself_exe = - ASSERT_NO_ERRNO_AND_VALUE(ReadLink("/proc/self/exe")); - EXPECT_EQ(link_threadself_exe, link_procself_exe); - // A thread should not have "/proc/<tid>/task". - struct stat s; - EXPECT_THAT(stat("/proc/thread-self/task", &s), - SyscallFailsWithErrno(ENOENT)); - }); -} - -// Returns the /proc/PID/maps entry for the MAP_PRIVATE | MAP_ANONYMOUS mapping -// m with start address addr and length len. -std::string AnonymousMapsEntry(uintptr_t addr, size_t len, int prot) { - return absl::StrCat(absl::Hex(addr, absl::PadSpec::kZeroPad8), "-", - absl::Hex(addr + len, absl::PadSpec::kZeroPad8), " ", - prot & PROT_READ ? "r" : "-", - prot & PROT_WRITE ? "w" : "-", - prot & PROT_EXEC ? "x" : "-", "p 00000000 00:00 0 "); -} - -std::string AnonymousMapsEntryForMapping(const Mapping& m, int prot) { - return AnonymousMapsEntry(m.addr(), m.len(), prot); -} - -PosixErrorOr<std::map<uint64_t, uint64_t>> ReadProcSelfAuxv() { - std::string auxv_file; - RETURN_IF_ERRNO(GetContents("/proc/self/auxv", &auxv_file)); - const Elf64_auxv_t* auxv_data = - reinterpret_cast<const Elf64_auxv_t*>(auxv_file.data()); - std::map<uint64_t, uint64_t> auxv_entries; - for (int i = 0; auxv_data[i].a_type != AT_NULL; i++) { - auto a_type = auxv_data[i].a_type; - EXPECT_EQ(0, auxv_entries.count(a_type)) << "a_type: " << a_type; - auxv_entries.emplace(a_type, auxv_data[i].a_un.a_val); - } - return auxv_entries; -} - -TEST(ProcSelfAuxv, EntryPresence) { - auto auxv_entries = ASSERT_NO_ERRNO_AND_VALUE(ReadProcSelfAuxv()); - - EXPECT_EQ(auxv_entries.count(AT_ENTRY), 1); - EXPECT_EQ(auxv_entries.count(AT_PHDR), 1); - EXPECT_EQ(auxv_entries.count(AT_PHENT), 1); - EXPECT_EQ(auxv_entries.count(AT_PHNUM), 1); - EXPECT_EQ(auxv_entries.count(AT_BASE), 1); - EXPECT_EQ(auxv_entries.count(AT_UID), 1); - EXPECT_EQ(auxv_entries.count(AT_EUID), 1); - EXPECT_EQ(auxv_entries.count(AT_GID), 1); - EXPECT_EQ(auxv_entries.count(AT_EGID), 1); - EXPECT_EQ(auxv_entries.count(AT_SECURE), 1); - EXPECT_EQ(auxv_entries.count(AT_CLKTCK), 1); - EXPECT_EQ(auxv_entries.count(AT_RANDOM), 1); - EXPECT_EQ(auxv_entries.count(AT_EXECFN), 1); - EXPECT_EQ(auxv_entries.count(AT_PAGESZ), 1); - EXPECT_EQ(auxv_entries.count(AT_SYSINFO_EHDR), 1); -} - -TEST(ProcSelfAuxv, EntryValues) { - auto proc_auxv = ASSERT_NO_ERRNO_AND_VALUE(ReadProcSelfAuxv()); - - // We need to find the ELF auxiliary vector. The section of memory pointed to - // by envp contains some pointers to non-null pointers, followed by a single - // pointer to a null pointer, followed by the auxiliary vector. - char** envpi = environ; - while (*envpi) { - ++envpi; - } - - const Elf64_auxv_t* envp_auxv = - reinterpret_cast<const Elf64_auxv_t*>(envpi + 1); - int i; - for (i = 0; envp_auxv[i].a_type != AT_NULL; i++) { - auto a_type = envp_auxv[i].a_type; - EXPECT_EQ(proc_auxv.count(a_type), 1); - EXPECT_EQ(proc_auxv[a_type], envp_auxv[i].a_un.a_val) - << "a_type: " << a_type; - } - EXPECT_EQ(i, proc_auxv.size()); -} - -// Just open and read /proc/self/maps, check that we can find [stack] -TEST(ProcSelfMaps, Basic) { - auto proc_self_maps = - ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/self/maps")); - - std::vector<std::string> strings = absl::StrSplit(proc_self_maps, '\n'); - std::vector<std::string> stacks; - // Make sure there's a stack in there. - for (const auto& str : strings) { - if (str.find("[stack]") != std::string::npos) { - stacks.push_back(str); - } - } - ASSERT_EQ(1, stacks.size()) << "[stack] not found in: " << proc_self_maps; - // Linux pads to 73 characters then we add 7. - EXPECT_EQ(80, stacks[0].length()); -} - -TEST(ProcSelfMaps, Map1) { - Mapping mapping = - ASSERT_NO_ERRNO_AND_VALUE(MmapAnon(kPageSize, PROT_READ, MAP_PRIVATE)); - auto proc_self_maps = - ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/self/maps")); - std::vector<std::string> strings = absl::StrSplit(proc_self_maps, '\n'); - std::vector<std::string> addrs; - // Make sure if is listed. - for (const auto& str : strings) { - if (str == AnonymousMapsEntryForMapping(mapping, PROT_READ)) { - addrs.push_back(str); - } - } - ASSERT_EQ(1, addrs.size()); -} - -TEST(ProcSelfMaps, Map2) { - // NOTE(magi): The permissions must be different or the pages will get merged. - Mapping map1 = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(kPageSize, PROT_READ | PROT_EXEC, MAP_PRIVATE)); - Mapping map2 = - ASSERT_NO_ERRNO_AND_VALUE(MmapAnon(kPageSize, PROT_WRITE, MAP_PRIVATE)); - - auto proc_self_maps = - ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/self/maps")); - std::vector<std::string> strings = absl::StrSplit(proc_self_maps, '\n'); - std::vector<std::string> addrs; - // Make sure if is listed. - for (const auto& str : strings) { - if (str == AnonymousMapsEntryForMapping(map1, PROT_READ | PROT_EXEC)) { - addrs.push_back(str); - } - } - ASSERT_EQ(1, addrs.size()); - addrs.clear(); - for (const auto& str : strings) { - if (str == AnonymousMapsEntryForMapping(map2, PROT_WRITE)) { - addrs.push_back(str); - } - } - ASSERT_EQ(1, addrs.size()); -} - -TEST(ProcSelfMaps, MapUnmap) { - Mapping map1 = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(kPageSize, PROT_READ | PROT_EXEC, MAP_PRIVATE)); - Mapping map2 = - ASSERT_NO_ERRNO_AND_VALUE(MmapAnon(kPageSize, PROT_WRITE, MAP_PRIVATE)); - - auto proc_self_maps = - ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/self/maps")); - std::vector<std::string> strings = absl::StrSplit(proc_self_maps, '\n'); - std::vector<std::string> addrs; - // Make sure if is listed. - for (const auto& str : strings) { - if (str == AnonymousMapsEntryForMapping(map1, PROT_READ | PROT_EXEC)) { - addrs.push_back(str); - } - } - ASSERT_EQ(1, addrs.size()) << proc_self_maps; - addrs.clear(); - for (const auto& str : strings) { - if (str == AnonymousMapsEntryForMapping(map2, PROT_WRITE)) { - addrs.push_back(str); - } - } - ASSERT_EQ(1, addrs.size()); - - map2.reset(); - - // Read it again. - proc_self_maps = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/self/maps")); - strings = absl::StrSplit(proc_self_maps, '\n'); - // First entry should be there. - addrs.clear(); - for (const auto& str : strings) { - if (str == AnonymousMapsEntryForMapping(map1, PROT_READ | PROT_EXEC)) { - addrs.push_back(str); - } - } - ASSERT_EQ(1, addrs.size()); - addrs.clear(); - // But not the second. - for (const auto& str : strings) { - if (str == AnonymousMapsEntryForMapping(map2, PROT_WRITE)) { - addrs.push_back(str); - } - } - ASSERT_EQ(0, addrs.size()); -} - -TEST(ProcSelfMaps, Mprotect) { - // FIXME(jamieliu): Linux's mprotect() sometimes fails to merge VMAs in this - // case. - SKIP_IF(!IsRunningOnGvisor()); - - // Reserve 5 pages of address space. - Mapping m = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(5 * kPageSize, PROT_NONE, MAP_PRIVATE)); - - // Change the permissions on the middle 3 pages. (The first and last pages may - // be merged with other vmas on either side, so they aren't tested directly; - // they just ensure that the middle 3 pages are bracketed by VMAs with - // incompatible permissions.) - ASSERT_THAT(mprotect(reinterpret_cast<void*>(m.addr() + kPageSize), - 3 * kPageSize, PROT_READ), - SyscallSucceeds()); - - // Check that the middle 3 pages make up a single VMA. - auto proc_self_maps = - ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/self/maps")); - std::vector<std::string> strings = absl::StrSplit(proc_self_maps, '\n'); - EXPECT_THAT(strings, Contains(AnonymousMapsEntry(m.addr() + kPageSize, - 3 * kPageSize, PROT_READ))); - - // Change the permissions on the middle page only. - ASSERT_THAT(mprotect(reinterpret_cast<void*>(m.addr() + 2 * kPageSize), - kPageSize, PROT_READ | PROT_WRITE), - SyscallSucceeds()); - - // Check that the single VMA has been split into 3 VMAs. - proc_self_maps = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/self/maps")); - strings = absl::StrSplit(proc_self_maps, '\n'); - EXPECT_THAT( - strings, - IsSupersetOf( - {AnonymousMapsEntry(m.addr() + kPageSize, kPageSize, PROT_READ), - AnonymousMapsEntry(m.addr() + 2 * kPageSize, kPageSize, - PROT_READ | PROT_WRITE), - AnonymousMapsEntry(m.addr() + 3 * kPageSize, kPageSize, - PROT_READ)})); - - // Change the permissions on the middle page back. - ASSERT_THAT(mprotect(reinterpret_cast<void*>(m.addr() + 2 * kPageSize), - kPageSize, PROT_READ), - SyscallSucceeds()); - - // Check that the 3 VMAs have been merged back into a single VMA. - proc_self_maps = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/self/maps")); - strings = absl::StrSplit(proc_self_maps, '\n'); - EXPECT_THAT(strings, Contains(AnonymousMapsEntry(m.addr() + kPageSize, - 3 * kPageSize, PROT_READ))); -} - -TEST(ProcSelfFd, OpenFd) { - int pipe_fds[2]; - ASSERT_THAT(pipe2(pipe_fds, O_CLOEXEC), SyscallSucceeds()); - - // Reopen the write end. - const std::string path = absl::StrCat("/proc/self/fd/", pipe_fds[1]); - const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(path, O_WRONLY)); - - // Ensure that a read/write works. - const std::string data = "hello"; - std::unique_ptr<char[]> buffer(new char[data.size()]); - EXPECT_THAT(write(fd.get(), data.c_str(), data.size()), - SyscallSucceedsWithValue(5)); - EXPECT_THAT(read(pipe_fds[0], buffer.get(), data.size()), - SyscallSucceedsWithValue(5)); - EXPECT_EQ(strncmp(buffer.get(), data.c_str(), data.size()), 0); - - // Cleanup. - ASSERT_THAT(close(pipe_fds[0]), SyscallSucceeds()); - ASSERT_THAT(close(pipe_fds[1]), SyscallSucceeds()); -} - -TEST(ProcSelfFdInfo, CorrectFds) { - // Make sure there is at least one open file. - auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(f.path(), O_RDONLY)); - - // Get files in /proc/self/fd. - auto fd_files = ASSERT_NO_ERRNO_AND_VALUE(ListDir("/proc/self/fd", false)); - - // Get files in /proc/self/fdinfo. - auto fdinfo_files = - ASSERT_NO_ERRNO_AND_VALUE(ListDir("/proc/self/fdinfo", false)); - - // They should contain the same fds. - EXPECT_THAT(fd_files, UnorderedElementsAreArray(fdinfo_files)); - - // Both should contain fd. - auto fd_s = absl::StrCat(fd.get()); - EXPECT_THAT(fd_files, Contains(fd_s)); -} - -TEST(ProcSelfFdInfo, Flags) { - std::string path = NewTempAbsPath(); - - // Create file here with O_CREAT to test that O_CREAT does not appear in - // fdinfo flags. - int flags = O_CREAT | O_RDWR | O_APPEND | O_CLOEXEC; - const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(path, flags, 0644)); - - // Automatically delete path. - TempPath temp_path(path); - - // O_CREAT does not appear in fdinfo flags. - flags &= ~O_CREAT; - - // O_LARGEFILE always appears (on x86_64). - flags |= kOLargeFile; - - auto fd_info = ASSERT_NO_ERRNO_AND_VALUE( - GetContents(absl::StrCat("/proc/self/fdinfo/", fd.get()))); - EXPECT_THAT(fd_info, HasSubstr(absl::StrFormat("flags:\t%#o", flags))); -} - -TEST(ProcSelfExe, Absolute) { - auto exe = ASSERT_NO_ERRNO_AND_VALUE( - ReadLink(absl::StrCat("/proc/", getpid(), "/exe"))); - EXPECT_EQ(exe[0], '/'); -} - -// Sanity check for /proc/cpuinfo fields that must be present. -TEST(ProcCpuinfo, RequiredFieldsArePresent) { - std::string proc_cpuinfo = - ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/cpuinfo")); - ASSERT_FALSE(proc_cpuinfo.empty()); - std::vector<std::string> cpuinfo_fields = absl::StrSplit(proc_cpuinfo, '\n'); - - // Check that the usual fields are there. We don't really care about the - // contents. - for (const std::string& field : required_fields) { - EXPECT_THAT(proc_cpuinfo, HasSubstr(field)); - } -} - -TEST(ProcCpuinfo, DeniesWrite) { - EXPECT_THAT(open("/proc/cpuinfo", O_WRONLY), SyscallFailsWithErrno(EACCES)); -} - -// Sanity checks that uptime is present. -TEST(ProcUptime, IsPresent) { - std::string proc_uptime = - ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/uptime")); - ASSERT_FALSE(proc_uptime.empty()); - std::vector<std::string> uptime_parts = absl::StrSplit(proc_uptime, ' '); - - // Parse once. - double uptime0, uptime1, idletime0, idletime1; - ASSERT_TRUE(absl::SimpleAtod(uptime_parts[0], &uptime0)); - ASSERT_TRUE(absl::SimpleAtod(uptime_parts[1], &idletime0)); - - // Sleep for one second. - absl::SleepFor(absl::Seconds(1)); - - // Parse again. - proc_uptime = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/uptime")); - ASSERT_FALSE(proc_uptime.empty()); - uptime_parts = absl::StrSplit(proc_uptime, ' '); - ASSERT_TRUE(absl::SimpleAtod(uptime_parts[0], &uptime1)); - ASSERT_TRUE(absl::SimpleAtod(uptime_parts[1], &idletime1)); - - // Sanity check. - // - // We assert that between 0.99 and 59.99 seconds have passed. If more than a - // minute has passed, then we must be executing really, really slowly. - EXPECT_GE(uptime0, 0.0); - EXPECT_GE(idletime0, 0.0); - EXPECT_GT(uptime1, uptime0); - EXPECT_GE(uptime1, uptime0 + 0.99); - EXPECT_LE(uptime1, uptime0 + 59.99); - EXPECT_GE(idletime1, idletime0); -} - -TEST(ProcMeminfo, ContainsBasicFields) { - std::string proc_meminfo = - ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/meminfo")); - EXPECT_THAT(proc_meminfo, AllOf(ContainsRegex(R"(MemTotal:\s+[0-9]+ kB)"), - ContainsRegex(R"(MemFree:\s+[0-9]+ kB)"))); -} - -TEST(ProcStat, ContainsBasicFields) { - std::string proc_stat = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/stat")); - - std::vector<std::string> names; - for (auto const& line : absl::StrSplit(proc_stat, '\n')) { - std::vector<std::string> fields = - absl::StrSplit(line, ' ', absl::SkipWhitespace()); - if (fields.empty()) { - continue; - } - names.push_back(fields[0]); - } - - EXPECT_THAT(names, - IsSupersetOf({"cpu", "intr", "ctxt", "btime", "processes", - "procs_running", "procs_blocked", "softirq"})); -} - -TEST(ProcStat, EndsWithNewline) { - std::string proc_stat = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/stat")); - EXPECT_EQ(proc_stat.back(), '\n'); -} - -TEST(ProcStat, Fields) { - std::string proc_stat = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/stat")); - - std::vector<std::string> names; - for (auto const& line : absl::StrSplit(proc_stat, '\n')) { - std::vector<std::string> fields = - absl::StrSplit(line, ' ', absl::SkipWhitespace()); - if (fields.empty()) { - continue; - } - - if (absl::StartsWith(fields[0], "cpu")) { - // As of Linux 3.11, each CPU entry has 10 fields, plus the name. - EXPECT_GE(fields.size(), 11) << proc_stat; - } else if (fields[0] == "ctxt") { - // Single field. - EXPECT_EQ(fields.size(), 2) << proc_stat; - } else if (fields[0] == "btime") { - // Single field. - EXPECT_EQ(fields.size(), 2) << proc_stat; - } else if (fields[0] == "itime") { - // Single field. - ASSERT_EQ(fields.size(), 2) << proc_stat; - // This is the only floating point field. - double val; - EXPECT_TRUE(absl::SimpleAtod(fields[1], &val)) << proc_stat; - continue; - } else if (fields[0] == "processes") { - // Single field. - EXPECT_EQ(fields.size(), 2) << proc_stat; - } else if (fields[0] == "procs_running") { - // Single field. - EXPECT_EQ(fields.size(), 2) << proc_stat; - } else if (fields[0] == "procs_blocked") { - // Single field. - EXPECT_EQ(fields.size(), 2) << proc_stat; - } else if (fields[0] == "softirq") { - // As of Linux 3.11, there are 10 softirqs. 12 fields for name + total. - EXPECT_GE(fields.size(), 12) << proc_stat; - } - - // All fields besides itime are valid base 10 numbers. - for (size_t i = 1; i < fields.size(); i++) { - uint64_t val; - EXPECT_TRUE(absl::SimpleAtoi(fields[i], &val)) << proc_stat; - } - } -} - -TEST(ProcLoadavg, EndsWithNewline) { - std::string proc_loadvg = - ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/loadavg")); - EXPECT_EQ(proc_loadvg.back(), '\n'); -} - -TEST(ProcLoadavg, Fields) { - std::string proc_loadvg = - ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/loadavg")); - std::vector<std::string> lines = absl::StrSplit(proc_loadvg, '\n'); - - // Single line. - EXPECT_EQ(lines.size(), 2) << proc_loadvg; - - std::vector<std::string> fields = - absl::StrSplit(lines[0], absl::ByAnyChar(" /"), absl::SkipWhitespace()); - - // Six fields. - EXPECT_EQ(fields.size(), 6) << proc_loadvg; - - double val; - uint64_t val2; - // First three fields are floating point numbers. - EXPECT_TRUE(absl::SimpleAtod(fields[0], &val)) << proc_loadvg; - EXPECT_TRUE(absl::SimpleAtod(fields[1], &val)) << proc_loadvg; - EXPECT_TRUE(absl::SimpleAtod(fields[2], &val)) << proc_loadvg; - // Rest of the fields are valid base 10 numbers. - EXPECT_TRUE(absl::SimpleAtoi(fields[3], &val2)) << proc_loadvg; - EXPECT_TRUE(absl::SimpleAtoi(fields[4], &val2)) << proc_loadvg; - EXPECT_TRUE(absl::SimpleAtoi(fields[5], &val2)) << proc_loadvg; -} - -// NOTE: Tests in priority.cc also check certain priority related fields in -// /proc/self/stat. - -class ProcPidStatTest : public ::testing::TestWithParam<std::string> {}; - -TEST_P(ProcPidStatTest, HasBasicFields) { - std::string proc_pid_stat = ASSERT_NO_ERRNO_AND_VALUE( - GetContents(absl::StrCat("/proc/", GetParam(), "/stat"))); - - ASSERT_FALSE(proc_pid_stat.empty()); - std::vector<std::string> fields = absl::StrSplit(proc_pid_stat, ' '); - ASSERT_GE(fields.size(), 24); - EXPECT_EQ(absl::StrCat(getpid()), fields[0]); - // fields[1] is the thread name. - EXPECT_EQ("R", fields[2]); // task state - EXPECT_EQ(absl::StrCat(getppid()), fields[3]); - - // If the test starts up quickly, then the process start time and the kernel - // boot time will be very close, and the proc starttime field (which is the - // delta of the two times) will be 0. For that unfortunate reason, we can - // only check that starttime >= 0, and not that it is strictly > 0. - uint64_t starttime; - ASSERT_TRUE(absl::SimpleAtoi(fields[21], &starttime)); - EXPECT_GE(starttime, 0); - - uint64_t vss; - ASSERT_TRUE(absl::SimpleAtoi(fields[22], &vss)); - EXPECT_GT(vss, 0); - - uint64_t rss; - ASSERT_TRUE(absl::SimpleAtoi(fields[23], &rss)); - EXPECT_GT(rss, 0); - - uint64_t rsslim; - ASSERT_TRUE(absl::SimpleAtoi(fields[24], &rsslim)); - EXPECT_GT(rsslim, 0); -} - -INSTANTIATE_TEST_SUITE_P(SelfAndNumericPid, ProcPidStatTest, - ::testing::Values("self", absl::StrCat(getpid()))); - -using ProcPidStatmTest = ::testing::TestWithParam<std::string>; - -TEST_P(ProcPidStatmTest, HasBasicFields) { - std::string proc_pid_statm = ASSERT_NO_ERRNO_AND_VALUE( - GetContents(absl::StrCat("/proc/", GetParam(), "/statm"))); - ASSERT_FALSE(proc_pid_statm.empty()); - std::vector<std::string> fields = absl::StrSplit(proc_pid_statm, ' '); - ASSERT_GE(fields.size(), 7); - - uint64_t vss; - ASSERT_TRUE(absl::SimpleAtoi(fields[0], &vss)); - EXPECT_GT(vss, 0); - - uint64_t rss; - ASSERT_TRUE(absl::SimpleAtoi(fields[1], &rss)); - EXPECT_GT(rss, 0); -} - -INSTANTIATE_TEST_SUITE_P(SelfAndNumericPid, ProcPidStatmTest, - ::testing::Values("self", absl::StrCat(getpid()))); - -PosixErrorOr<uint64_t> CurrentRSS() { - ASSIGN_OR_RETURN_ERRNO(auto proc_self_stat, GetContents("/proc/self/stat")); - if (proc_self_stat.empty()) { - return PosixError(EINVAL, "empty /proc/self/stat"); - } - - std::vector<std::string> fields = absl::StrSplit(proc_self_stat, ' '); - if (fields.size() < 24) { - return PosixError( - EINVAL, - absl::StrCat("/proc/self/stat has too few fields: ", proc_self_stat)); - } - - uint64_t rss; - if (!absl::SimpleAtoi(fields[23], &rss)) { - return PosixError( - EINVAL, absl::StrCat("/proc/self/stat RSS field is not a number: ", - fields[23])); - } - - // RSS is given in number of pages. - return rss * kPageSize; -} - -// The size of mapping created by MapPopulateRSS. -constexpr uint64_t kMappingSize = 100 << 20; - -// Tolerance on RSS comparisons to account for background thread mappings, -// reclaimed pages, newly faulted pages, etc. -constexpr uint64_t kRSSTolerance = 5 << 20; - -// Capture RSS before and after an anonymous mapping with passed prot. -void MapPopulateRSS(int prot, uint64_t* before, uint64_t* after) { - *before = ASSERT_NO_ERRNO_AND_VALUE(CurrentRSS()); - - // N.B. The kernel asynchronously accumulates per-task RSS counters into the - // mm RSS, which is exposed by /proc/PID/stat. Task exit is a synchronization - // point (kernel/exit.c:do_exit -> sync_mm_rss), so perform the mapping on - // another thread to ensure it is reflected in RSS after the thread exits. - Mapping mapping; - ScopedThread t([&mapping, prot] { - mapping = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(kMappingSize, prot, MAP_PRIVATE | MAP_POPULATE)); - }); - t.Join(); - - *after = ASSERT_NO_ERRNO_AND_VALUE(CurrentRSS()); -} - -// TODO(b/73896574): Test for PROT_READ + MAP_POPULATE anonymous mappings. Their -// semantics are more subtle: -// -// Small pages -> Zero page mapped, not counted in RSS -// (mm/memory.c:do_anonymous_page). -// -// Huge pages (THP enabled, use_zero_page=0) -> Pages committed -// (mm/memory.c:__handle_mm_fault -> create_huge_pmd). -// -// Huge pages (THP enabled, use_zero_page=1) -> Zero page mapped, not counted in -// RSS (mm/huge_memory.c:do_huge_pmd_anonymous_page). - -// PROT_WRITE + MAP_POPULATE anonymous mappings are always committed. -TEST(ProcSelfStat, PopulateWriteRSS) { - uint64_t before, after; - MapPopulateRSS(PROT_READ | PROT_WRITE, &before, &after); - - // Mapping is committed. - EXPECT_NEAR(before + kMappingSize, after, kRSSTolerance); -} - -// PROT_NONE + MAP_POPULATE anonymous mappings are never committed. -TEST(ProcSelfStat, PopulateNoneRSS) { - uint64_t before, after; - MapPopulateRSS(PROT_NONE, &before, &after); - - // Mapping not committed. - EXPECT_NEAR(before, after, kRSSTolerance); -} - -// Returns the calling thread's name. -PosixErrorOr<std::string> ThreadName() { - // "The buffer should allow space for up to 16 bytes; the returned std::string - // will be null-terminated if it is shorter than that." - prctl(2). But we - // always want the thread name to be null-terminated. - char thread_name[17]; - int rc = prctl(PR_GET_NAME, thread_name, 0, 0, 0); - MaybeSave(); - if (rc < 0) { - return PosixError(errno, "prctl(PR_GET_NAME)"); - } - thread_name[16] = '\0'; - return std::string(thread_name); -} - -// Parses the contents of a /proc/[pid]/status file into a collection of -// key-value pairs. -PosixErrorOr<std::map<std::string, std::string>> ParseProcStatus( - absl::string_view status_str) { - std::map<std::string, std::string> fields; - for (absl::string_view const line : - absl::StrSplit(status_str, '\n', absl::SkipWhitespace())) { - const std::pair<absl::string_view, absl::string_view> kv = - absl::StrSplit(line, absl::MaxSplits(":\t", 1)); - if (kv.first.empty()) { - return PosixError( - EINVAL, absl::StrCat("failed to parse key in line \"", line, "\"")); - } - std::string key(kv.first); - if (fields.count(key)) { - return PosixError(EINVAL, - absl::StrCat("duplicate key \"", kv.first, "\"")); - } - std::string value(kv.second); - absl::StripLeadingAsciiWhitespace(&value); - fields.emplace(std::move(key), std::move(value)); - } - return fields; -} - -TEST(ParseProcStatusTest, ParsesSimpleStatusFileWithMixedWhitespaceCorrectly) { - EXPECT_THAT( - ParseProcStatus( - "Name:\tinit\nState:\tS (sleeping)\nCapEff:\t 0000001fffffffff\n"), - IsPosixErrorOkAndHolds(UnorderedElementsAre( - Pair("Name", "init"), Pair("State", "S (sleeping)"), - Pair("CapEff", "0000001fffffffff")))); -} - -TEST(ParseProcStatusTest, DetectsDuplicateKeys) { - auto proc_status_or = ParseProcStatus("Name:\tfoo\nName:\tfoo\n"); - EXPECT_THAT(proc_status_or, - PosixErrorIs(EINVAL, ::testing::StrEq("duplicate key \"Name\""))); -} - -TEST(ParseProcStatusTest, DetectsMissingTabs) { - EXPECT_THAT(ParseProcStatus("Name:foo\nPid: 1\n"), - IsPosixErrorOkAndHolds(UnorderedElementsAre(Pair("Name:foo", ""), - Pair("Pid: 1", "")))); -} - -TEST(ProcPidStatusTest, HasBasicFields) { - // Do this on a separate thread since we want tgid != tid. - ScopedThread([] { - const pid_t tgid = getpid(); - const pid_t tid = syscall(SYS_gettid); - EXPECT_NE(tgid, tid); - const auto thread_name = ASSERT_NO_ERRNO_AND_VALUE(ThreadName()); - - std::string status_str = ASSERT_NO_ERRNO_AND_VALUE( - GetContents(absl::StrCat("/proc/", tid, "/status"))); - - ASSERT_FALSE(status_str.empty()); - const auto status = ASSERT_NO_ERRNO_AND_VALUE(ParseProcStatus(status_str)); - EXPECT_THAT(status, IsSupersetOf({Pair("Name", thread_name), - Pair("Tgid", absl::StrCat(tgid)), - Pair("Pid", absl::StrCat(tid)), - Pair("PPid", absl::StrCat(getppid()))})); - }); -} - -TEST(ProcPidStatusTest, StateRunning) { - // Task must be running when reading the file. - const pid_t tid = syscall(SYS_gettid); - std::string status_str = ASSERT_NO_ERRNO_AND_VALUE( - GetContents(absl::StrCat("/proc/", tid, "/status"))); - - EXPECT_THAT(ParseProcStatus(status_str), - IsPosixErrorOkAndHolds(Contains(Pair("State", "R (running)")))); -} - -TEST(ProcPidStatusTest, StateSleeping_NoRandomSave) { - // Starts a child process that blocks and checks that State is sleeping. - auto res = WithSubprocess( - [&](int pid) -> PosixError { - // Because this test is timing based we will disable cooperative saving - // and the test itself also has random saving disabled. - const DisableSave ds; - // Try multiple times in case the child isn't sleeping when status file - // is read. - MonotonicTimer timer; - timer.Start(); - for (;;) { - ASSIGN_OR_RETURN_ERRNO( - std::string status_str, - GetContents(absl::StrCat("/proc/", pid, "/status"))); - ASSIGN_OR_RETURN_ERRNO(auto map, ParseProcStatus(status_str)); - if (map["State"] == std::string("S (sleeping)")) { - // Test passed! - return NoError(); - } - if (timer.Duration() > absl::Seconds(10)) { - return PosixError(ETIMEDOUT, "Timeout waiting for child to sleep"); - } - absl::SleepFor(absl::Milliseconds(10)); - } - }, - nullptr, nullptr); - ASSERT_NO_ERRNO(res); -} - -TEST(ProcPidStatusTest, ValuesAreTabDelimited) { - std::string status_str = - ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/self/status")); - ASSERT_FALSE(status_str.empty()); - for (absl::string_view const line : - absl::StrSplit(status_str, '\n', absl::SkipWhitespace())) { - EXPECT_NE(std::string::npos, line.find(":\t")); - } -} - -// Threads properly counts running threads. -// -// TODO(mpratt): Test zombied threads while the thread group leader is still -// running with generalized fork and clone children from the wait test. -TEST(ProcPidStatusTest, Threads) { - char buf[4096] = {}; - EXPECT_THAT(ReadWhileRunning("status", buf, sizeof(buf) - 1), - SyscallSucceedsWithValue(Gt(0))); - - auto status = ASSERT_NO_ERRNO_AND_VALUE(ParseProcStatus(buf)); - auto it = status.find("Threads"); - ASSERT_NE(it, status.end()); - int threads = -1; - EXPECT_TRUE(absl::SimpleAtoi(it->second, &threads)) - << "Threads value " << it->second << " is not a number"; - // Don't make assumptions about the exact number of threads, as it may not be - // constant. - EXPECT_GE(threads, 1); - - memset(buf, 0, sizeof(buf)); - EXPECT_THAT(ReadWhileZombied("status", buf, sizeof(buf) - 1), - SyscallSucceedsWithValue(Gt(0))); - - status = ASSERT_NO_ERRNO_AND_VALUE(ParseProcStatus(buf)); - it = status.find("Threads"); - ASSERT_NE(it, status.end()); - threads = -1; - EXPECT_TRUE(absl::SimpleAtoi(it->second, &threads)) - << "Threads value " << it->second << " is not a number"; - // There must be only the thread group leader remaining, zombied. - EXPECT_EQ(threads, 1); -} - -// Returns true if all characters in s are digits. -bool IsDigits(absl::string_view s) { - return std::all_of(s.begin(), s.end(), absl::ascii_isdigit); -} - -TEST(ProcPidStatTest, VmStats) { - std::string status_str = - ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/self/status")); - ASSERT_FALSE(status_str.empty()); - auto status = ASSERT_NO_ERRNO_AND_VALUE(ParseProcStatus(status_str)); - - const auto vss_it = status.find("VmSize"); - ASSERT_NE(vss_it, status.end()); - - absl::string_view vss_str(vss_it->second); - - // Room for the " kB" suffix plus at least one digit. - ASSERT_GT(vss_str.length(), 3); - EXPECT_TRUE(absl::EndsWith(vss_str, " kB")); - // Everything else is part of a number. - EXPECT_TRUE(IsDigits(vss_str.substr(0, vss_str.length() - 3))) << vss_str; - // ... which is not 0. - EXPECT_NE('0', vss_str[0]); - - const auto rss_it = status.find("VmRSS"); - ASSERT_NE(rss_it, status.end()); - - absl::string_view rss_str(rss_it->second); - - // Room for the " kB" suffix plus at least one digit. - ASSERT_GT(rss_str.length(), 3); - EXPECT_TRUE(absl::EndsWith(rss_str, " kB")); - // Everything else is part of a number. - EXPECT_TRUE(IsDigits(rss_str.substr(0, rss_str.length() - 3))) << rss_str; - // ... which is not 0. - EXPECT_NE('0', rss_str[0]); - - const auto data_it = status.find("VmData"); - ASSERT_NE(data_it, status.end()); - - absl::string_view data_str(data_it->second); - - // Room for the " kB" suffix plus at least one digit. - ASSERT_GT(data_str.length(), 3); - EXPECT_TRUE(absl::EndsWith(data_str, " kB")); - // Everything else is part of a number. - EXPECT_TRUE(IsDigits(data_str.substr(0, data_str.length() - 3))) << data_str; - // ... which is not 0. - EXPECT_NE('0', data_str[0]); -} - -// Parse an array of NUL-terminated char* arrays, returning a vector of -// strings. -std::vector<std::string> ParseNulTerminatedStrings(std::string contents) { - EXPECT_EQ('\0', contents.back()); - // The split will leave an empty string if the NUL-byte remains, so pop - // it. - contents.pop_back(); - - return absl::StrSplit(contents, '\0'); -} - -TEST(ProcPidCmdline, MatchesArgv) { - std::vector<std::string> proc_cmdline = ParseNulTerminatedStrings( - ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/self/cmdline"))); - EXPECT_THAT(saved_argv, ContainerEq(proc_cmdline)); -} - -TEST(ProcPidEnviron, MatchesEnviron) { - std::vector<std::string> proc_environ = ParseNulTerminatedStrings( - ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/self/environ"))); - // Get the environment from the environ variable, which we will compare with - // /proc/self/environ. - std::vector<std::string> env; - for (char** v = environ; *v; v++) { - env.push_back(*v); - } - EXPECT_THAT(env, ContainerEq(proc_environ)); -} - -TEST(ProcPidCmdline, SubprocessForkSameCmdline) { - std::vector<std::string> proc_cmdline_parent; - std::vector<std::string> proc_cmdline; - proc_cmdline_parent = ParseNulTerminatedStrings( - ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/self/cmdline"))); - auto res = WithSubprocess( - [&](int pid) -> PosixError { - ASSIGN_OR_RETURN_ERRNO( - auto raw_cmdline, - GetContents(absl::StrCat("/proc/", pid, "/cmdline"))); - proc_cmdline = ParseNulTerminatedStrings(raw_cmdline); - return NoError(); - }, - nullptr, nullptr); - ASSERT_NO_ERRNO(res); - - for (size_t i = 0; i < proc_cmdline_parent.size(); i++) { - EXPECT_EQ(proc_cmdline_parent[i], proc_cmdline[i]); - } -} - -// Test whether /proc/PID/ symlinks can be read for a running process. -TEST(ProcPidSymlink, SubprocessRunning) { - char buf[1]; - - EXPECT_THAT(ReadlinkWhileRunning("exe", buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - - EXPECT_THAT(ReadlinkWhileRunning("ns/net", buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - - EXPECT_THAT(ReadlinkWhileRunning("ns/pid", buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - - EXPECT_THAT(ReadlinkWhileRunning("ns/user", buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); -} - -// FIXME(gvisor.dev/issue/164): Inconsistent behavior between gVisor and linux -// on proc files. -TEST(ProcPidSymlink, SubprocessZombied) { - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_READ_SEARCH, false)); - - char buf[1]; - - int want = EACCES; - if (!IsRunningOnGvisor()) { - auto version = ASSERT_NO_ERRNO_AND_VALUE(GetKernelVersion()); - if (version.major == 4 && version.minor > 3) { - want = ENOENT; - } - } - - EXPECT_THAT(ReadlinkWhileZombied("exe", buf, sizeof(buf)), - SyscallFailsWithErrno(want)); - - if (!IsRunningOnGvisor()) { - EXPECT_THAT(ReadlinkWhileZombied("ns/net", buf, sizeof(buf)), - SyscallFailsWithErrno(want)); - } - - // FIXME(gvisor.dev/issue/164): Inconsistent behavior between gVisor and linux - // on proc files. - // - // ~4.3: Syscall fails with EACCES. - // 4.17 & gVisor: Syscall succeeds and returns 1. - // - // EXPECT_THAT(ReadlinkWhileZombied("ns/pid", buf, sizeof(buf)), - // SyscallFailsWithErrno(EACCES)); - - // FIXME(gvisor.dev/issue/164): Inconsistent behavior between gVisor and linux - // on proc files. - // - // ~4.3: Syscall fails with EACCES. - // 4.17 & gVisor: Syscall succeeds and returns 1. - // - // EXPECT_THAT(ReadlinkWhileZombied("ns/user", buf, sizeof(buf)), - // SyscallFailsWithErrno(EACCES)); -} - -// Test whether /proc/PID/ symlinks can be read for an exited process. -TEST(ProcPidSymlink, SubprocessExited) { - // FIXME(gvisor.dev/issue/164): These all succeed on gVisor. - SKIP_IF(IsRunningOnGvisor()); - - char buf[1]; - - EXPECT_THAT(ReadlinkWhileExited("exe", buf, sizeof(buf)), - SyscallFailsWithErrno(ESRCH)); - - EXPECT_THAT(ReadlinkWhileExited("ns/net", buf, sizeof(buf)), - SyscallFailsWithErrno(ESRCH)); - - EXPECT_THAT(ReadlinkWhileExited("ns/pid", buf, sizeof(buf)), - SyscallFailsWithErrno(ESRCH)); - - EXPECT_THAT(ReadlinkWhileExited("ns/user", buf, sizeof(buf)), - SyscallFailsWithErrno(ESRCH)); -} - -// /proc/PID/exe points to the correct binary. -TEST(ProcPidExe, Subprocess) { - auto link = ASSERT_NO_ERRNO_AND_VALUE(ReadLink("/proc/self/exe")); - auto expected_absolute_path = - ASSERT_NO_ERRNO_AND_VALUE(MakeAbsolute(link, "")); - - char actual[PATH_MAX + 1] = {}; - ASSERT_THAT(ReadlinkWhileRunning("exe", actual, sizeof(actual)), - SyscallSucceedsWithValue(Gt(0))); - EXPECT_EQ(actual, expected_absolute_path); -} - -// Test whether /proc/PID/ files can be read for a running process. -TEST(ProcPidFile, SubprocessRunning) { - char buf[1]; - - EXPECT_THAT(ReadWhileRunning("auxv", buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - - EXPECT_THAT(ReadWhileRunning("cmdline", buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - - EXPECT_THAT(ReadWhileRunning("comm", buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - - EXPECT_THAT(ReadWhileRunning("gid_map", buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - - EXPECT_THAT(ReadWhileRunning("io", buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - - EXPECT_THAT(ReadWhileRunning("maps", buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - - EXPECT_THAT(ReadWhileRunning("stat", buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - - EXPECT_THAT(ReadWhileRunning("status", buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - - EXPECT_THAT(ReadWhileRunning("uid_map", buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); -} - -// Test whether /proc/PID/ files can be read for a zombie process. -TEST(ProcPidFile, SubprocessZombie) { - char buf[1]; - - // FIXME(gvisor.dev/issue/164): Loosen requirement due to inconsistent - // behavior on different kernels. - // - // ~4.3: Succeds and returns 0. - // 4.17: Succeeds and returns 1. - // gVisor: Succeeds and returns 0. - EXPECT_THAT(ReadWhileZombied("auxv", buf, sizeof(buf)), SyscallSucceeds()); - - EXPECT_THAT(ReadWhileZombied("cmdline", buf, sizeof(buf)), - SyscallSucceedsWithValue(0)); - - EXPECT_THAT(ReadWhileZombied("comm", buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - - EXPECT_THAT(ReadWhileZombied("gid_map", buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - - EXPECT_THAT(ReadWhileZombied("maps", buf, sizeof(buf)), - SyscallSucceedsWithValue(0)); - - EXPECT_THAT(ReadWhileZombied("stat", buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - - EXPECT_THAT(ReadWhileZombied("status", buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - - EXPECT_THAT(ReadWhileZombied("uid_map", buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - - // FIXME(gvisor.dev/issue/164): Inconsistent behavior between gVisor and linux - // on proc files. - // - // ~4.3: Fails and returns EACCES. - // gVisor & 4.17: Succeeds and returns 1. - // - // EXPECT_THAT(ReadWhileZombied("io", buf, sizeof(buf)), - // SyscallFailsWithErrno(EACCES)); -} - -// Test whether /proc/PID/ files can be read for an exited process. -TEST(ProcPidFile, SubprocessExited) { - char buf[1]; - - // FIXME(gvisor.dev/issue/164): Inconsistent behavior between kernels. - // - // ~4.3: Fails and returns ESRCH. - // gVisor: Fails with ESRCH. - // 4.17: Succeeds and returns 1. - // - // EXPECT_THAT(ReadWhileExited("auxv", buf, sizeof(buf)), - // SyscallFailsWithErrno(ESRCH)); - - EXPECT_THAT(ReadWhileExited("cmdline", buf, sizeof(buf)), - SyscallFailsWithErrno(ESRCH)); - - if (!IsRunningOnGvisor()) { - // FIXME(gvisor.dev/issue/164): Succeeds on gVisor. - EXPECT_THAT(ReadWhileExited("comm", buf, sizeof(buf)), - SyscallFailsWithErrno(ESRCH)); - } - - EXPECT_THAT(ReadWhileExited("gid_map", buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - - if (!IsRunningOnGvisor()) { - // FIXME(gvisor.dev/issue/164): Succeeds on gVisor. - EXPECT_THAT(ReadWhileExited("io", buf, sizeof(buf)), - SyscallFailsWithErrno(ESRCH)); - } - - if (!IsRunningOnGvisor()) { - // FIXME(gvisor.dev/issue/164): Returns EOF on gVisor. - EXPECT_THAT(ReadWhileExited("maps", buf, sizeof(buf)), - SyscallFailsWithErrno(ESRCH)); - } - - if (!IsRunningOnGvisor()) { - // FIXME(gvisor.dev/issue/164): Succeeds on gVisor. - EXPECT_THAT(ReadWhileExited("stat", buf, sizeof(buf)), - SyscallFailsWithErrno(ESRCH)); - } - - if (!IsRunningOnGvisor()) { - // FIXME(gvisor.dev/issue/164): Succeeds on gVisor. - EXPECT_THAT(ReadWhileExited("status", buf, sizeof(buf)), - SyscallFailsWithErrno(ESRCH)); - } - - EXPECT_THAT(ReadWhileExited("uid_map", buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); -} - -PosixError DirContainsImpl(absl::string_view path, - const std::vector<std::string>& targets, - bool strict) { - ASSIGN_OR_RETURN_ERRNO(auto listing, ListDir(path, false)); - bool success = true; - - for (auto& expected_entry : targets) { - auto cursor = std::find(listing.begin(), listing.end(), expected_entry); - if (cursor == listing.end()) { - success = false; - } - } - - if (!success) { - return PosixError( - ENOENT, - absl::StrCat("Failed to find one or more paths in '", path, "'")); - } - - if (strict) { - if (targets.size() != listing.size()) { - return PosixError( - EINVAL, - absl::StrCat("Expected to find ", targets.size(), " elements in '", - path, "', but found ", listing.size())); - } - } - - return NoError(); -} - -PosixError DirContains(absl::string_view path, - const std::vector<std::string>& targets) { - return DirContainsImpl(path, targets, false); -} - -PosixError DirContainsExactly(absl::string_view path, - const std::vector<std::string>& targets) { - return DirContainsImpl(path, targets, true); -} - -PosixError EventuallyDirContainsExactly( - absl::string_view path, const std::vector<std::string>& targets) { - constexpr int kRetryCount = 100; - const absl::Duration kRetryDelay = absl::Milliseconds(100); - - for (int i = 0; i < kRetryCount; ++i) { - auto res = DirContainsExactly(path, targets); - if (res.ok()) { - return res; - } else if (i < kRetryCount - 1) { - // Sleep if this isn't the final iteration. - absl::SleepFor(kRetryDelay); - } - } - return PosixError(ETIMEDOUT, - "Timed out while waiting for directory to contain files "); -} - -TEST(ProcTask, Basic) { - EXPECT_NO_ERRNO( - DirContains("/proc/self/task", {".", "..", absl::StrCat(getpid())})); -} - -std::vector<std::string> TaskFiles( - const std::vector<std::string>& initial_contents, - const std::vector<pid_t>& pids) { - return VecCat<std::string>( - initial_contents, - ApplyVec<std::string>([](const pid_t p) { return absl::StrCat(p); }, - pids)); -} - -std::vector<std::string> TaskFiles(const std::vector<pid_t>& pids) { - return TaskFiles({".", "..", absl::StrCat(getpid())}, pids); -} - -// Helper class for creating a new task in the current thread group. -class BlockingChild { - public: - BlockingChild() : thread_([=] { Start(); }) {} - ~BlockingChild() { Join(); } - - pid_t Tid() const { - absl::MutexLock ml(&mu_); - mu_.Await(absl::Condition(&tid_ready_)); - return tid_; - } - - void Join() { Stop(); } - - private: - void Start() { - absl::MutexLock ml(&mu_); - tid_ = syscall(__NR_gettid); - tid_ready_ = true; - mu_.Await(absl::Condition(&stop_)); - } - - void Stop() { - absl::MutexLock ml(&mu_); - stop_ = true; - } - - mutable absl::Mutex mu_; - bool stop_ ABSL_GUARDED_BY(mu_) = false; - pid_t tid_; - bool tid_ready_ ABSL_GUARDED_BY(mu_) = false; - - // Must be last to ensure that the destructor for the thread is run before - // any other member of the object is destroyed. - ScopedThread thread_; -}; - -TEST(ProcTask, NewThreadAppears) { - auto initial = ASSERT_NO_ERRNO_AND_VALUE(ListDir("/proc/self/task", false)); - BlockingChild child1; - EXPECT_NO_ERRNO(DirContainsExactly("/proc/self/task", - TaskFiles(initial, {child1.Tid()}))); -} - -TEST(ProcTask, KilledThreadsDisappear) { - auto initial = ASSERT_NO_ERRNO_AND_VALUE(ListDir("/proc/self/task/", false)); - - BlockingChild child1; - EXPECT_NO_ERRNO(DirContainsExactly("/proc/self/task", - TaskFiles(initial, {child1.Tid()}))); - - // Stat child1's task file. Regression test for b/32097707. - struct stat statbuf; - const std::string child1_task_file = - absl::StrCat("/proc/self/task/", child1.Tid()); - EXPECT_THAT(stat(child1_task_file.c_str(), &statbuf), SyscallSucceeds()); - - BlockingChild child2; - EXPECT_NO_ERRNO(DirContainsExactly( - "/proc/self/task", TaskFiles(initial, {child1.Tid(), child2.Tid()}))); - - BlockingChild child3; - BlockingChild child4; - BlockingChild child5; - EXPECT_NO_ERRNO(DirContainsExactly( - "/proc/self/task", - TaskFiles(initial, {child1.Tid(), child2.Tid(), child3.Tid(), - child4.Tid(), child5.Tid()}))); - - child2.Join(); - EXPECT_NO_ERRNO(EventuallyDirContainsExactly( - "/proc/self/task", TaskFiles(initial, {child1.Tid(), child3.Tid(), - child4.Tid(), child5.Tid()}))); - - child1.Join(); - child4.Join(); - EXPECT_NO_ERRNO(EventuallyDirContainsExactly( - "/proc/self/task", TaskFiles(initial, {child3.Tid(), child5.Tid()}))); - - // Stat child1's task file again. This time it should fail. See b/32097707. - EXPECT_THAT(stat(child1_task_file.c_str(), &statbuf), - SyscallFailsWithErrno(ENOENT)); - - child3.Join(); - child5.Join(); - EXPECT_NO_ERRNO(EventuallyDirContainsExactly("/proc/self/task", initial)); -} - -TEST(ProcTask, ChildTaskDir) { - BlockingChild child1; - EXPECT_NO_ERRNO(DirContains("/proc/self/task", TaskFiles({child1.Tid()}))); - EXPECT_NO_ERRNO(DirContains(absl::StrCat("/proc/", child1.Tid(), "/task"), - TaskFiles({child1.Tid()}))); -} - -PosixError VerifyPidDir(std::string path) { - return DirContains(path, {"exe", "fd", "io", "maps", "ns", "stat", "status"}); -} - -TEST(ProcTask, VerifyTaskDir) { - EXPECT_NO_ERRNO(VerifyPidDir("/proc/self")); - - EXPECT_NO_ERRNO(VerifyPidDir(absl::StrCat("/proc/self/task/", getpid()))); - BlockingChild child1; - EXPECT_NO_ERRNO(VerifyPidDir(absl::StrCat("/proc/self/task/", child1.Tid()))); - - // Only the first level of task directories should contain the 'task' - // directory. That is: - // - // /proc/1234/task <- should exist - // /proc/1234/task/1234/task <- should not exist - // /proc/1234/task/1235/task <- should not exist (where 1235 is in the same - // thread group as 1234). - EXPECT_FALSE( - DirContains(absl::StrCat("/proc/self/task/", getpid()), {"task"}).ok()) - << "Found 'task' directory in an inner directory."; -} - -TEST(ProcTask, TaskDirCannotBeDeleted) { - // Drop capabilities that allow us to override file and directory permissions. - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); - - EXPECT_THAT(rmdir("/proc/self/task"), SyscallFails()); - EXPECT_THAT(rmdir(absl::StrCat("/proc/self/task/", getpid()).c_str()), - SyscallFailsWithErrno(EACCES)); -} - -TEST(ProcTask, TaskDirHasCorrectMetadata) { - struct stat st; - EXPECT_THAT(stat("/proc/self/task", &st), SyscallSucceeds()); - EXPECT_TRUE(S_ISDIR(st.st_mode)); - - // Verify file is readable and executable by everyone. - mode_t expected_permissions = - S_IRUSR | S_IXUSR | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH; - mode_t permissions = st.st_mode & (S_IRWXU | S_IRWXG | S_IRWXO); - EXPECT_EQ(expected_permissions, permissions); -} - -TEST(ProcTask, TaskDirCanSeekToEnd) { - const FileDescriptor dirfd = - ASSERT_NO_ERRNO_AND_VALUE(Open("/proc/self/task", O_RDONLY)); - EXPECT_THAT(lseek(dirfd.get(), 0, SEEK_END), SyscallSucceeds()); -} - -TEST(ProcTask, VerifyTaskDirNlinks) { - // A task directory will have 3 links if the taskgroup has a single - // thread. For example, the following shows where the links to - // '/proc/12345/task comes' from for a single threaded process with pid 12345: - // - // /proc/12345/task <-- 1 link for the directory itself - // . <-- link from "." - // .. - // 12345 - // . - // .. <-- link from ".." to parent. - // <other contents of a task dir> - // - // We can't assert an absolute number of links since we don't control how many - // threads the test framework spawns. Instead, we'll ensure creating a new - // thread increases the number of links as expected. - - // Once we reach the test body, we can count on the thread count being stable - // unless we spawn a new one. - uint64_t initial_links = ASSERT_NO_ERRNO_AND_VALUE(Links("/proc/self/task")); - ASSERT_GE(initial_links, 3); - - // For each new subtask, we should gain a new link. - BlockingChild child1; - EXPECT_THAT(Links("/proc/self/task"), - IsPosixErrorOkAndHolds(initial_links + 1)); - BlockingChild child2; - EXPECT_THAT(Links("/proc/self/task"), - IsPosixErrorOkAndHolds(initial_links + 2)); -} - -TEST(ProcTask, CommContainsThreadNameAndTrailingNewline) { - constexpr char kThreadName[] = "TestThread12345"; - ASSERT_THAT(prctl(PR_SET_NAME, kThreadName), SyscallSucceeds()); - - auto thread_name = ASSERT_NO_ERRNO_AND_VALUE( - GetContents(JoinPath("/proc", absl::StrCat(getpid()), "task", - absl::StrCat(syscall(SYS_gettid)), "comm"))); - EXPECT_EQ(absl::StrCat(kThreadName, "\n"), thread_name); -} - -TEST(ProcTaskNs, NsDirExistsAndHasCorrectMetadata) { - EXPECT_NO_ERRNO(DirContains("/proc/self/ns", {"net", "pid", "user"})); - - // Let's just test the 'pid' entry, all of them are very similar. - struct stat st; - EXPECT_THAT(lstat("/proc/self/ns/pid", &st), SyscallSucceeds()); - EXPECT_TRUE(S_ISLNK(st.st_mode)); - - auto link = ASSERT_NO_ERRNO_AND_VALUE(ReadLink("/proc/self/ns/pid")); - EXPECT_THAT(link, ::testing::StartsWith("pid:[")); -} - -TEST(ProcTaskNs, AccessOnNsNodeSucceeds) { - EXPECT_THAT(access("/proc/self/ns/pid", F_OK), SyscallSucceeds()); -} - -TEST(ProcSysKernelHostname, Exists) { - EXPECT_THAT(open("/proc/sys/kernel/hostname", O_RDONLY), SyscallSucceeds()); -} - -TEST(ProcSysKernelHostname, MatchesUname) { - struct utsname buf; - EXPECT_THAT(uname(&buf), SyscallSucceeds()); - const std::string hostname = absl::StrCat(buf.nodename, "\n"); - auto procfs_hostname = - ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/sys/kernel/hostname")); - EXPECT_EQ(procfs_hostname, hostname); -} - -TEST(ProcSysVmMmapMinAddr, HasNumericValue) { - const std::string mmap_min_addr_str = - ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/sys/vm/mmap_min_addr")); - uintptr_t mmap_min_addr; - EXPECT_TRUE(absl::SimpleAtoi(mmap_min_addr_str, &mmap_min_addr)) - << "/proc/sys/vm/mmap_min_addr does not contain a numeric value: " - << mmap_min_addr_str; -} - -TEST(ProcSysVmOvercommitMemory, HasNumericValue) { - const std::string overcommit_memory_str = - ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/sys/vm/overcommit_memory")); - uintptr_t overcommit_memory; - EXPECT_TRUE(absl::SimpleAtoi(overcommit_memory_str, &overcommit_memory)) - << "/proc/sys/vm/overcommit_memory does not contain a numeric value: " - << overcommit_memory; -} - -// Check that link for proc fd entries point the target node, not the -// symlink itself. Regression test for b/31155070. -TEST(ProcTaskFd, FstatatFollowsSymlink) { - const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDONLY)); - - struct stat sproc = {}; - EXPECT_THAT( - fstatat(-1, absl::StrCat("/proc/self/fd/", fd.get()).c_str(), &sproc, 0), - SyscallSucceeds()); - - struct stat sfile = {}; - EXPECT_THAT(fstatat(-1, file.path().c_str(), &sfile, 0), SyscallSucceeds()); - - // If fstatat follows the fd symlink, the device and inode numbers should - // match at a minimum. - EXPECT_EQ(sproc.st_dev, sfile.st_dev); - EXPECT_EQ(sproc.st_ino, sfile.st_ino); - EXPECT_EQ(0, memcmp(&sfile, &sproc, sizeof(sfile))); -} - -TEST(ProcFilesystems, Bug65172365) { - std::string proc_filesystems = - ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/filesystems")); - ASSERT_FALSE(proc_filesystems.empty()); -} - -TEST(ProcFilesystems, PresenceOfShmMaxMniAll) { - uint64_t shmmax = 0; - uint64_t shmall = 0; - uint64_t shmmni = 0; - std::string proc_file; - proc_file = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/sys/kernel/shmmax")); - ASSERT_FALSE(proc_file.empty()); - ASSERT_TRUE(absl::SimpleAtoi(proc_file, &shmmax)); - proc_file = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/sys/kernel/shmall")); - ASSERT_FALSE(proc_file.empty()); - ASSERT_TRUE(absl::SimpleAtoi(proc_file, &shmall)); - proc_file = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/sys/kernel/shmmni")); - ASSERT_FALSE(proc_file.empty()); - ASSERT_TRUE(absl::SimpleAtoi(proc_file, &shmmni)); - - ASSERT_GT(shmmax, 0); - ASSERT_GT(shmall, 0); - ASSERT_GT(shmmni, 0); - ASSERT_LE(shmall, shmmax); - - // These values should never be higher than this by default, for more - // information see uapi/linux/shm.h - ASSERT_LE(shmmax, ULONG_MAX - (1UL << 24)); - ASSERT_LE(shmall, ULONG_MAX - (1UL << 24)); -} - -// Check that /proc/mounts is a symlink to self/mounts. -TEST(ProcMounts, IsSymlink) { - auto link = ASSERT_NO_ERRNO_AND_VALUE(ReadLink("/proc/mounts")); - EXPECT_EQ(link, "self/mounts"); -} - -TEST(ProcSelfMountinfo, RequiredFieldsArePresent) { - auto mountinfo = - ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/self/mountinfo")); - EXPECT_THAT( - mountinfo, - AllOf( - // Root mount. - ContainsRegex( - R"([0-9]+ [0-9]+ [0-9]+:[0-9]+ / / (rw|ro).*- \S+ \S+ (rw|ro)\S*)"), - // Proc mount - always rw. - ContainsRegex( - R"([0-9]+ [0-9]+ [0-9]+:[0-9]+ / /proc rw.*- \S+ \S+ rw\S*)"))); -} - -// Check that /proc/self/mounts looks something like a real mounts file. -TEST(ProcSelfMounts, RequiredFieldsArePresent) { - auto mounts = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/self/mounts")); - EXPECT_THAT(mounts, - AllOf( - // Root mount. - ContainsRegex(R"(\S+ / \S+ (rw|ro)\S* [0-9]+ [0-9]+\s)"), - // Root mount. - ContainsRegex(R"(\S+ /proc \S+ rw\S* [0-9]+ [0-9]+\s)"))); -} - -void CheckDuplicatesRecursively(std::string path) { - errno = 0; - DIR* dir = opendir(path.c_str()); - if (dir == nullptr) { - // Ignore any directories we can't read or missing directories as the - // directory could have been deleted/mutated from the time the parent - // directory contents were read. - return; - } - auto dir_closer = Cleanup([&dir]() { closedir(dir); }); - std::unordered_set<std::string> children; - while (true) { - // Readdir(3): If the end of the directory stream is reached, NULL is - // returned and errno is not changed. If an error occurs, NULL is returned - // and errno is set appropriately. To distinguish end of stream and from an - // error, set errno to zero before calling readdir() and then check the - // value of errno if NULL is returned. - errno = 0; - struct dirent* dp = readdir(dir); - if (dp == nullptr) { - ASSERT_EQ(errno, 0) << path; - break; // We're done. - } - - if (strcmp(dp->d_name, ".") == 0 || strcmp(dp->d_name, "..") == 0) { - continue; - } - - ASSERT_EQ(children.find(std::string(dp->d_name)), children.end()) - << dp->d_name; - children.insert(std::string(dp->d_name)); - - ASSERT_NE(dp->d_type, DT_UNKNOWN); - - if (dp->d_type != DT_DIR) { - continue; - } - CheckDuplicatesRecursively(absl::StrCat(path, "/", dp->d_name)); - } -} - -TEST(Proc, NoDuplicates) { CheckDuplicatesRecursively("/proc"); } - -// Most /proc/PID files are owned by the task user with SUID_DUMP_USER. -TEST(ProcPid, UserDumpableOwner) { - int before; - ASSERT_THAT(before = prctl(PR_GET_DUMPABLE), SyscallSucceeds()); - auto cleanup = Cleanup([before] { - ASSERT_THAT(prctl(PR_SET_DUMPABLE, before), SyscallSucceeds()); - }); - - EXPECT_THAT(prctl(PR_SET_DUMPABLE, SUID_DUMP_USER), SyscallSucceeds()); - - // This applies to the task directory itself and files inside. - struct stat st; - ASSERT_THAT(stat("/proc/self/", &st), SyscallSucceeds()); - EXPECT_EQ(st.st_uid, geteuid()); - EXPECT_EQ(st.st_gid, getegid()); - - ASSERT_THAT(stat("/proc/self/stat", &st), SyscallSucceeds()); - EXPECT_EQ(st.st_uid, geteuid()); - EXPECT_EQ(st.st_gid, getegid()); -} - -// /proc/PID files are owned by root with SUID_DUMP_DISABLE. -TEST(ProcPid, RootDumpableOwner) { - int before; - ASSERT_THAT(before = prctl(PR_GET_DUMPABLE), SyscallSucceeds()); - auto cleanup = Cleanup([before] { - ASSERT_THAT(prctl(PR_SET_DUMPABLE, before), SyscallSucceeds()); - }); - - EXPECT_THAT(prctl(PR_SET_DUMPABLE, SUID_DUMP_DISABLE), SyscallSucceeds()); - - // This *does not* applies to the task directory itself (or other 0555 - // directories), but does to files inside. - struct stat st; - ASSERT_THAT(stat("/proc/self/", &st), SyscallSucceeds()); - EXPECT_EQ(st.st_uid, geteuid()); - EXPECT_EQ(st.st_gid, getegid()); - - // This file is owned by root. Also allow nobody in case this test is running - // in a userns without root mapped. - ASSERT_THAT(stat("/proc/self/stat", &st), SyscallSucceeds()); - EXPECT_THAT(st.st_uid, AnyOf(Eq(0), Eq(65534))); - EXPECT_THAT(st.st_gid, AnyOf(Eq(0), Eq(65534))); -} - -TEST(Proc, GetdentsEnoent) { - FileDescriptor fd; - ASSERT_NO_ERRNO(WithSubprocess( - [&](int pid) -> PosixError { - // Running. - ASSIGN_OR_RETURN_ERRNO(fd, Open(absl::StrCat("/proc/", pid, "/task"), - O_RDONLY | O_DIRECTORY)); - - return NoError(); - }, - nullptr, nullptr)); - char buf[1024]; - ASSERT_THAT(syscall(SYS_getdents64, fd.get(), buf, sizeof(buf)), - SyscallFailsWithErrno(ENOENT)); -} - -void CheckSyscwFromIOFile(const std::string& path, const std::string& regex) { - std::string output; - ASSERT_NO_ERRNO(GetContents(path, &output)); - ASSERT_THAT(output, ContainsRegex(absl::StrCat("syscw:\\s+", regex, "\n"))); -} - -// Checks that there is variable accounting of IO between threads/tasks. -TEST(Proc, PidTidIOAccounting) { - absl::Notification notification; - - // Run a thread with a bunch of writes. Check that io account records exactly - // the number of write calls. File open/close is there to prevent buffering. - ScopedThread writer([¬ification] { - const int num_writes = 100; - for (int i = 0; i < num_writes; i++) { - auto path = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - ASSERT_NO_ERRNO(SetContents(path.path(), "a")); - } - notification.Notify(); - const std::string& writer_dir = - absl::StrCat("/proc/", getpid(), "/task/", gettid(), "/io"); - - CheckSyscwFromIOFile(writer_dir, std::to_string(num_writes)); - }); - - // Run a thread and do no writes. Check that no writes are recorded. - ScopedThread noop([¬ification] { - notification.WaitForNotification(); - const std::string& noop_dir = - absl::StrCat("/proc/", getpid(), "/task/", gettid(), "/io"); - - CheckSyscwFromIOFile(noop_dir, "0"); - }); - - writer.Join(); - noop.Join(); -} - -} // namespace -} // namespace testing -} // namespace gvisor - -int main(int argc, char** argv) { - for (int i = 0; i < argc; ++i) { - gvisor::testing::saved_argv.emplace_back(std::string(argv[i])); - } - - gvisor::testing::TestInit(&argc, &argv); - return RUN_ALL_TESTS(); -} diff --git a/test/syscalls/linux/proc_net.cc b/test/syscalls/linux/proc_net.cc deleted file mode 100644 index 3a611a86f..000000000 --- a/test/syscalls/linux/proc_net.cc +++ /dev/null @@ -1,331 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <arpa/inet.h> -#include <errno.h> -#include <netinet/in.h> -#include <poll.h> -#include <sys/socket.h> -#include <sys/syscall.h> -#include <sys/types.h> - -#include "gtest/gtest.h" -#include "absl/strings/str_split.h" -#include "absl/time/clock.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/util/capability_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/fs_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -TEST(ProcNetIfInet6, Format) { - auto ifinet6 = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/net/if_inet6")); - EXPECT_THAT(ifinet6, - ::testing::MatchesRegex( - // Ex: "00000000000000000000000000000001 01 80 10 80 lo\n" - "^([a-f0-9]{32}( [a-f0-9]{2}){4} +[a-z][a-z0-9]*\n)+$")); -} - -TEST(ProcSysNetIpv4Sack, Exists) { - EXPECT_THAT(open("/proc/sys/net/ipv4/tcp_sack", O_RDONLY), SyscallSucceeds()); -} - -TEST(ProcSysNetIpv4Sack, CanReadAndWrite) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability((CAP_DAC_OVERRIDE)))); - - auto const fd = - ASSERT_NO_ERRNO_AND_VALUE(Open("/proc/sys/net/ipv4/tcp_sack", O_RDWR)); - - char buf; - EXPECT_THAT(PreadFd(fd.get(), &buf, sizeof(buf), 0), - SyscallSucceedsWithValue(sizeof(buf))); - - EXPECT_TRUE(buf == '0' || buf == '1') << "unexpected tcp_sack: " << buf; - - char to_write = (buf == '1') ? '0' : '1'; - EXPECT_THAT(PwriteFd(fd.get(), &to_write, sizeof(to_write), 0), - SyscallSucceedsWithValue(sizeof(to_write))); - - buf = 0; - EXPECT_THAT(PreadFd(fd.get(), &buf, sizeof(buf), 0), - SyscallSucceedsWithValue(sizeof(buf))); - EXPECT_EQ(buf, to_write); -} - -PosixErrorOr<uint64_t> GetSNMPMetricFromProc(const std::string snmp, - const std::string& type, - const std::string& item) { - std::vector<std::string> snmp_vec = absl::StrSplit(snmp, '\n'); - - // /proc/net/snmp prints a line of headers followed by a line of metrics. - // Only search the headers. - for (unsigned i = 0; i < snmp_vec.size(); i = i + 2) { - if (!absl::StartsWith(snmp_vec[i], type)) continue; - - std::vector<std::string> fields = - absl::StrSplit(snmp_vec[i], ' ', absl::SkipWhitespace()); - - EXPECT_TRUE((i + 1) < snmp_vec.size()); - std::vector<std::string> values = - absl::StrSplit(snmp_vec[i + 1], ' ', absl::SkipWhitespace()); - - EXPECT_TRUE(!fields.empty() && fields.size() == values.size()); - - // Metrics start at the first index. - for (unsigned j = 1; j < fields.size(); j++) { - if (fields[j] == item) { - uint64_t val; - if (!absl::SimpleAtoi(values[j], &val)) { - return PosixError(EINVAL, - absl::StrCat("field is not a number: ", values[j])); - } - - return val; - } - } - } - // We should never get here. - return PosixError( - EINVAL, absl::StrCat("failed to find ", type, "/", item, " in:", snmp)); -} - -TEST(ProcNetSnmp, TcpReset_NoRandomSave) { - // TODO(gvisor.dev/issue/866): epsocket metrics are not savable. - DisableSave ds; - - uint64_t oldAttemptFails; - uint64_t oldActiveOpens; - uint64_t oldOutRsts; - auto snmp = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/net/snmp")); - oldActiveOpens = ASSERT_NO_ERRNO_AND_VALUE( - GetSNMPMetricFromProc(snmp, "Tcp", "ActiveOpens")); - oldOutRsts = - ASSERT_NO_ERRNO_AND_VALUE(GetSNMPMetricFromProc(snmp, "Tcp", "OutRsts")); - oldAttemptFails = ASSERT_NO_ERRNO_AND_VALUE( - GetSNMPMetricFromProc(snmp, "Tcp", "AttemptFails")); - - FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_STREAM, 0)); - - struct sockaddr_in sin = { - .sin_family = AF_INET, - .sin_port = htons(1234), - }; - - ASSERT_EQ(inet_pton(AF_INET, "127.0.0.1", &(sin.sin_addr)), 1); - ASSERT_THAT(connect(s.get(), (struct sockaddr*)&sin, sizeof(sin)), - SyscallFailsWithErrno(ECONNREFUSED)); - - uint64_t newAttemptFails; - uint64_t newActiveOpens; - uint64_t newOutRsts; - snmp = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/net/snmp")); - newActiveOpens = ASSERT_NO_ERRNO_AND_VALUE( - GetSNMPMetricFromProc(snmp, "Tcp", "ActiveOpens")); - newOutRsts = - ASSERT_NO_ERRNO_AND_VALUE(GetSNMPMetricFromProc(snmp, "Tcp", "OutRsts")); - newAttemptFails = ASSERT_NO_ERRNO_AND_VALUE( - GetSNMPMetricFromProc(snmp, "Tcp", "AttemptFails")); - - EXPECT_EQ(oldActiveOpens, newActiveOpens - 1); - EXPECT_EQ(oldOutRsts, newOutRsts - 1); - EXPECT_EQ(oldAttemptFails, newAttemptFails - 1); -} - -TEST(ProcNetSnmp, TcpEstab_NoRandomSave) { - // TODO(gvisor.dev/issue/866): epsocket metrics are not savable. - DisableSave ds; - - uint64_t oldEstabResets; - uint64_t oldActiveOpens; - uint64_t oldPassiveOpens; - uint64_t oldCurrEstab; - auto snmp = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/net/snmp")); - oldActiveOpens = ASSERT_NO_ERRNO_AND_VALUE( - GetSNMPMetricFromProc(snmp, "Tcp", "ActiveOpens")); - oldPassiveOpens = ASSERT_NO_ERRNO_AND_VALUE( - GetSNMPMetricFromProc(snmp, "Tcp", "PassiveOpens")); - oldCurrEstab = ASSERT_NO_ERRNO_AND_VALUE( - GetSNMPMetricFromProc(snmp, "Tcp", "CurrEstab")); - oldEstabResets = ASSERT_NO_ERRNO_AND_VALUE( - GetSNMPMetricFromProc(snmp, "Tcp", "EstabResets")); - - FileDescriptor s_listen = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_STREAM, 0)); - struct sockaddr_in sin = { - .sin_family = AF_INET, - .sin_port = 0, - }; - - ASSERT_EQ(inet_pton(AF_INET, "127.0.0.1", &(sin.sin_addr)), 1); - ASSERT_THAT(bind(s_listen.get(), (struct sockaddr*)&sin, sizeof(sin)), - SyscallSucceeds()); - ASSERT_THAT(listen(s_listen.get(), 1), SyscallSucceeds()); - - // Get the port bound by the listening socket. - socklen_t addrlen = sizeof(sin); - ASSERT_THAT( - getsockname(s_listen.get(), reinterpret_cast<sockaddr*>(&sin), &addrlen), - SyscallSucceeds()); - - FileDescriptor s_connect = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_STREAM, 0)); - ASSERT_THAT(connect(s_connect.get(), (struct sockaddr*)&sin, sizeof(sin)), - SyscallSucceeds()); - - auto s_accept = - ASSERT_NO_ERRNO_AND_VALUE(Accept(s_listen.get(), nullptr, nullptr)); - - uint64_t newEstabResets; - uint64_t newActiveOpens; - uint64_t newPassiveOpens; - uint64_t newCurrEstab; - snmp = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/net/snmp")); - newActiveOpens = ASSERT_NO_ERRNO_AND_VALUE( - GetSNMPMetricFromProc(snmp, "Tcp", "ActiveOpens")); - newPassiveOpens = ASSERT_NO_ERRNO_AND_VALUE( - GetSNMPMetricFromProc(snmp, "Tcp", "PassiveOpens")); - newCurrEstab = ASSERT_NO_ERRNO_AND_VALUE( - GetSNMPMetricFromProc(snmp, "Tcp", "CurrEstab")); - - EXPECT_EQ(oldActiveOpens, newActiveOpens - 1); - EXPECT_EQ(oldPassiveOpens, newPassiveOpens - 1); - EXPECT_EQ(oldCurrEstab, newCurrEstab - 2); - - // Send 1 byte from client to server. - ASSERT_THAT(send(s_connect.get(), "a", 1, 0), SyscallSucceedsWithValue(1)); - - constexpr int kPollTimeoutMs = 20000; // Wait up to 20 seconds for the data. - - // Wait until server-side fd sees the data on its side but don't read it. - struct pollfd poll_fd = {s_accept.get(), POLLIN, 0}; - ASSERT_THAT(RetryEINTR(poll)(&poll_fd, 1, kPollTimeoutMs), - SyscallSucceedsWithValue(1)); - - // Now close server-side fd without reading the data which leads to a RST - // packet sent to client side. - s_accept.reset(-1); - - // Wait until client-side fd sees RST packet. - struct pollfd poll_fd1 = {s_connect.get(), POLLIN, 0}; - ASSERT_THAT(RetryEINTR(poll)(&poll_fd1, 1, kPollTimeoutMs), - SyscallSucceedsWithValue(1)); - - // Now close client-side fd. - s_connect.reset(-1); - - // Wait until the process of the netstack. - absl::SleepFor(absl::Seconds(1)); - - snmp = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/net/snmp")); - newCurrEstab = ASSERT_NO_ERRNO_AND_VALUE( - GetSNMPMetricFromProc(snmp, "Tcp", "CurrEstab")); - newEstabResets = ASSERT_NO_ERRNO_AND_VALUE( - GetSNMPMetricFromProc(snmp, "Tcp", "EstabResets")); - - EXPECT_EQ(oldCurrEstab, newCurrEstab); - EXPECT_EQ(oldEstabResets, newEstabResets - 2); -} - -TEST(ProcNetSnmp, UdpNoPorts_NoRandomSave) { - // TODO(gvisor.dev/issue/866): epsocket metrics are not savable. - DisableSave ds; - - uint64_t oldOutDatagrams; - uint64_t oldNoPorts; - auto snmp = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/net/snmp")); - oldOutDatagrams = ASSERT_NO_ERRNO_AND_VALUE( - GetSNMPMetricFromProc(snmp, "Udp", "OutDatagrams")); - oldNoPorts = - ASSERT_NO_ERRNO_AND_VALUE(GetSNMPMetricFromProc(snmp, "Udp", "NoPorts")); - - FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_DGRAM, 0)); - - struct sockaddr_in sin = { - .sin_family = AF_INET, - .sin_port = htons(4444), - }; - ASSERT_EQ(inet_pton(AF_INET, "127.0.0.1", &(sin.sin_addr)), 1); - ASSERT_THAT(sendto(s.get(), "a", 1, 0, (struct sockaddr*)&sin, sizeof(sin)), - SyscallSucceedsWithValue(1)); - - uint64_t newOutDatagrams; - uint64_t newNoPorts; - snmp = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/net/snmp")); - newOutDatagrams = ASSERT_NO_ERRNO_AND_VALUE( - GetSNMPMetricFromProc(snmp, "Udp", "OutDatagrams")); - newNoPorts = - ASSERT_NO_ERRNO_AND_VALUE(GetSNMPMetricFromProc(snmp, "Udp", "NoPorts")); - - EXPECT_EQ(oldOutDatagrams, newOutDatagrams - 1); - EXPECT_EQ(oldNoPorts, newNoPorts - 1); -} - -TEST(ProcNetSnmp, UdpIn) { - // TODO(gvisor.dev/issue/866): epsocket metrics are not savable. - const DisableSave ds; - - uint64_t oldOutDatagrams; - uint64_t oldInDatagrams; - auto snmp = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/net/snmp")); - oldOutDatagrams = ASSERT_NO_ERRNO_AND_VALUE( - GetSNMPMetricFromProc(snmp, "Udp", "OutDatagrams")); - oldInDatagrams = ASSERT_NO_ERRNO_AND_VALUE( - GetSNMPMetricFromProc(snmp, "Udp", "InDatagrams")); - - std::cerr << "snmp: " << std::endl << snmp << std::endl; - FileDescriptor server = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_DGRAM, 0)); - struct sockaddr_in sin = { - .sin_family = AF_INET, - .sin_port = htons(0), - }; - ASSERT_EQ(inet_pton(AF_INET, "127.0.0.1", &(sin.sin_addr)), 1); - ASSERT_THAT(bind(server.get(), (struct sockaddr*)&sin, sizeof(sin)), - SyscallSucceeds()); - // Get the port bound by the server socket. - socklen_t addrlen = sizeof(sin); - ASSERT_THAT( - getsockname(server.get(), reinterpret_cast<sockaddr*>(&sin), &addrlen), - SyscallSucceeds()); - - FileDescriptor client = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_DGRAM, 0)); - ASSERT_THAT( - sendto(client.get(), "a", 1, 0, (struct sockaddr*)&sin, sizeof(sin)), - SyscallSucceedsWithValue(1)); - - char buf[128]; - ASSERT_THAT(recvfrom(server.get(), buf, sizeof(buf), 0, NULL, NULL), - SyscallSucceedsWithValue(1)); - - uint64_t newOutDatagrams; - uint64_t newInDatagrams; - snmp = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/net/snmp")); - std::cerr << "new snmp: " << std::endl << snmp << std::endl; - newOutDatagrams = ASSERT_NO_ERRNO_AND_VALUE( - GetSNMPMetricFromProc(snmp, "Udp", "OutDatagrams")); - newInDatagrams = ASSERT_NO_ERRNO_AND_VALUE( - GetSNMPMetricFromProc(snmp, "Udp", "InDatagrams")); - - EXPECT_EQ(oldOutDatagrams, newOutDatagrams - 1); - EXPECT_EQ(oldInDatagrams, newInDatagrams - 1); -} - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/proc_net_tcp.cc b/test/syscalls/linux/proc_net_tcp.cc deleted file mode 100644 index 5b6e3e3cd..000000000 --- a/test/syscalls/linux/proc_net_tcp.cc +++ /dev/null @@ -1,496 +0,0 @@ -// Copyright 2019 Google LLC -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <netinet/tcp.h> -#include <sys/socket.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "absl/strings/numbers.h" -#include "absl/strings/str_join.h" -#include "absl/strings/str_split.h" -#include "test/syscalls/linux/ip_socket_test_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -using absl::StrCat; -using absl::StrSplit; - -constexpr char kProcNetTCPHeader[] = - " sl local_address rem_address st tx_queue rx_queue tr tm->when " - "retrnsmt uid timeout inode " - " "; - -// TCPEntry represents a single entry from /proc/net/tcp. -struct TCPEntry { - uint32_t local_addr; - uint16_t local_port; - - uint32_t remote_addr; - uint16_t remote_port; - - uint64_t state; - uint64_t uid; - uint64_t inode; -}; - -// Finds the first entry in 'entries' for which 'predicate' returns true. -// Returns true on match, and sets 'match' to a copy of the matching entry. If -// 'match' is null, it's ignored. -bool FindBy(const std::vector<TCPEntry>& entries, TCPEntry* match, - std::function<bool(const TCPEntry&)> predicate) { - for (const TCPEntry& entry : entries) { - if (predicate(entry)) { - if (match != nullptr) { - *match = entry; - } - return true; - } - } - return false; -} - -bool FindByLocalAddr(const std::vector<TCPEntry>& entries, TCPEntry* match, - const struct sockaddr* addr) { - uint32_t host = IPFromInetSockaddr(addr); - uint16_t port = PortFromInetSockaddr(addr); - return FindBy(entries, match, [host, port](const TCPEntry& e) { - return (e.local_addr == host && e.local_port == port); - }); -} - -bool FindByRemoteAddr(const std::vector<TCPEntry>& entries, TCPEntry* match, - const struct sockaddr* addr) { - uint32_t host = IPFromInetSockaddr(addr); - uint16_t port = PortFromInetSockaddr(addr); - return FindBy(entries, match, [host, port](const TCPEntry& e) { - return (e.remote_addr == host && e.remote_port == port); - }); -} - -// Returns a parsed representation of /proc/net/tcp entries. -PosixErrorOr<std::vector<TCPEntry>> ProcNetTCPEntries() { - std::string content; - RETURN_IF_ERRNO(GetContents("/proc/net/tcp", &content)); - - bool found_header = false; - std::vector<TCPEntry> entries; - std::vector<std::string> lines = StrSplit(content, '\n'); - std::cerr << "<contents of /proc/net/tcp>" << std::endl; - for (const std::string& line : lines) { - std::cerr << line << std::endl; - - if (!found_header) { - EXPECT_EQ(line, kProcNetTCPHeader); - found_header = true; - continue; - } - if (line.empty()) { - continue; - } - - // Parse a single entry from /proc/net/tcp. - // - // Example entries: - // - // clang-format off - // - // sl local_address rem_address st tx_queue rx_queue tr tm->when retrnsmt uid timeout inode - // 0: 00000000:006F 00000000:0000 0A 00000000:00000000 00:00000000 00000000 0 0 1968 1 0000000000000000 100 0 0 10 0 - // 1: 0100007F:7533 00000000:0000 0A 00000000:00000000 00:00000000 00000000 120 0 10684 1 0000000000000000 100 0 0 10 0 - // ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ - // 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 - // - // clang-format on - - TCPEntry entry; - std::vector<std::string> fields = - StrSplit(line, absl::ByAnyChar(": "), absl::SkipEmpty()); - - ASSIGN_OR_RETURN_ERRNO(entry.local_addr, AtoiBase(fields[1], 16)); - ASSIGN_OR_RETURN_ERRNO(entry.local_port, AtoiBase(fields[2], 16)); - - ASSIGN_OR_RETURN_ERRNO(entry.remote_addr, AtoiBase(fields[3], 16)); - ASSIGN_OR_RETURN_ERRNO(entry.remote_port, AtoiBase(fields[4], 16)); - - ASSIGN_OR_RETURN_ERRNO(entry.state, AtoiBase(fields[5], 16)); - ASSIGN_OR_RETURN_ERRNO(entry.uid, Atoi<uint64_t>(fields[11])); - ASSIGN_OR_RETURN_ERRNO(entry.inode, Atoi<uint64_t>(fields[13])); - - entries.push_back(entry); - } - std::cerr << "<end of /proc/net/tcp>" << std::endl; - - return entries; -} - -TEST(ProcNetTCP, Exists) { - const std::string content = - ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/net/tcp")); - const std::string header_line = StrCat(kProcNetTCPHeader, "\n"); - if (IsRunningOnGvisor()) { - // Should be just the header since we don't have any tcp sockets yet. - EXPECT_EQ(content, header_line); - } else { - // On a general linux machine, we could have abitrary sockets on the system, - // so just check the header. - EXPECT_THAT(content, ::testing::StartsWith(header_line)); - } -} - -TEST(ProcNetTCP, EntryUID) { - auto sockets = - ASSERT_NO_ERRNO_AND_VALUE(IPv4TCPAcceptBindSocketPair(0).Create()); - std::vector<TCPEntry> entries = - ASSERT_NO_ERRNO_AND_VALUE(ProcNetTCPEntries()); - TCPEntry e; - ASSERT_TRUE(FindByLocalAddr(entries, &e, sockets->first_addr())); - EXPECT_EQ(e.uid, geteuid()); - ASSERT_TRUE(FindByRemoteAddr(entries, &e, sockets->first_addr())); - EXPECT_EQ(e.uid, geteuid()); -} - -TEST(ProcNetTCP, BindAcceptConnect) { - auto sockets = - ASSERT_NO_ERRNO_AND_VALUE(IPv4TCPAcceptBindSocketPair(0).Create()); - std::vector<TCPEntry> entries = - ASSERT_NO_ERRNO_AND_VALUE(ProcNetTCPEntries()); - // We can only make assertions about the total number of entries if we control - // the entire "machine". - if (IsRunningOnGvisor()) { - EXPECT_EQ(entries.size(), 2); - } - - EXPECT_TRUE(FindByLocalAddr(entries, nullptr, sockets->first_addr())); - EXPECT_TRUE(FindByRemoteAddr(entries, nullptr, sockets->first_addr())); -} - -TEST(ProcNetTCP, InodeReasonable) { - auto sockets = - ASSERT_NO_ERRNO_AND_VALUE(IPv4TCPAcceptBindSocketPair(0).Create()); - std::vector<TCPEntry> entries = - ASSERT_NO_ERRNO_AND_VALUE(ProcNetTCPEntries()); - - TCPEntry accepted_entry; - ASSERT_TRUE(FindByLocalAddr(entries, &accepted_entry, sockets->first_addr())); - EXPECT_NE(accepted_entry.inode, 0); - - TCPEntry client_entry; - ASSERT_TRUE(FindByRemoteAddr(entries, &client_entry, sockets->first_addr())); - EXPECT_NE(client_entry.inode, 0); - EXPECT_NE(accepted_entry.inode, client_entry.inode); -} - -TEST(ProcNetTCP, State) { - std::unique_ptr<FileDescriptor> server = - ASSERT_NO_ERRNO_AND_VALUE(IPv4TCPUnboundSocket(0).Create()); - - auto test_addr = V4Loopback(); - ASSERT_THAT( - bind(server->get(), reinterpret_cast<struct sockaddr*>(&test_addr.addr), - test_addr.addr_len), - SyscallSucceeds()); - - struct sockaddr addr; - socklen_t addrlen = sizeof(struct sockaddr); - ASSERT_THAT(getsockname(server->get(), &addr, &addrlen), SyscallSucceeds()); - ASSERT_EQ(addrlen, sizeof(struct sockaddr)); - - ASSERT_THAT(listen(server->get(), 10), SyscallSucceeds()); - std::vector<TCPEntry> entries = - ASSERT_NO_ERRNO_AND_VALUE(ProcNetTCPEntries()); - TCPEntry listen_entry; - ASSERT_TRUE(FindByLocalAddr(entries, &listen_entry, &addr)); - EXPECT_EQ(listen_entry.state, TCP_LISTEN); - - std::unique_ptr<FileDescriptor> client = - ASSERT_NO_ERRNO_AND_VALUE(IPv4TCPUnboundSocket(0).Create()); - ASSERT_THAT(RetryEINTR(connect)(client->get(), &addr, addrlen), - SyscallSucceeds()); - entries = ASSERT_NO_ERRNO_AND_VALUE(ProcNetTCPEntries()); - ASSERT_TRUE(FindByLocalAddr(entries, &listen_entry, &addr)); - EXPECT_EQ(listen_entry.state, TCP_LISTEN); - TCPEntry client_entry; - ASSERT_TRUE(FindByRemoteAddr(entries, &client_entry, &addr)); - EXPECT_EQ(client_entry.state, TCP_ESTABLISHED); - - FileDescriptor accepted = - ASSERT_NO_ERRNO_AND_VALUE(Accept(server->get(), nullptr, nullptr)); - - const uint32_t accepted_local_host = IPFromInetSockaddr(&addr); - const uint16_t accepted_local_port = PortFromInetSockaddr(&addr); - - entries = ASSERT_NO_ERRNO_AND_VALUE(ProcNetTCPEntries()); - TCPEntry accepted_entry; - ASSERT_TRUE(FindBy(entries, &accepted_entry, - [client_entry, accepted_local_host, - accepted_local_port](const TCPEntry& e) { - return e.local_addr == accepted_local_host && - e.local_port == accepted_local_port && - e.remote_addr == client_entry.local_addr && - e.remote_port == client_entry.local_port; - })); - EXPECT_EQ(accepted_entry.state, TCP_ESTABLISHED); -} - -constexpr char kProcNetTCP6Header[] = - " sl local_address remote_address" - " st tx_queue rx_queue tr tm->when retrnsmt" - " uid timeout inode"; - -// TCP6Entry represents a single entry from /proc/net/tcp6. -struct TCP6Entry { - struct in6_addr local_addr; - uint16_t local_port; - - struct in6_addr remote_addr; - uint16_t remote_port; - - uint64_t state; - uint64_t uid; - uint64_t inode; -}; - -bool IPv6AddrEqual(const struct in6_addr* a1, const struct in6_addr* a2) { - return memcmp(a1, a2, sizeof(struct in6_addr)) == 0; -} - -// Finds the first entry in 'entries' for which 'predicate' returns true. -// Returns true on match, and sets 'match' to a copy of the matching entry. If -// 'match' is null, it's ignored. -bool FindBy6(const std::vector<TCP6Entry>& entries, TCP6Entry* match, - std::function<bool(const TCP6Entry&)> predicate) { - for (const TCP6Entry& entry : entries) { - if (predicate(entry)) { - if (match != nullptr) { - *match = entry; - } - return true; - } - } - return false; -} - -const struct in6_addr* IP6FromInetSockaddr(const struct sockaddr* addr) { - auto* addr6 = reinterpret_cast<const struct sockaddr_in6*>(addr); - return &addr6->sin6_addr; -} - -bool FindByLocalAddr6(const std::vector<TCP6Entry>& entries, TCP6Entry* match, - const struct sockaddr* addr) { - const struct in6_addr* local = IP6FromInetSockaddr(addr); - uint16_t port = PortFromInetSockaddr(addr); - return FindBy6(entries, match, [local, port](const TCP6Entry& e) { - return (IPv6AddrEqual(&e.local_addr, local) && e.local_port == port); - }); -} - -bool FindByRemoteAddr6(const std::vector<TCP6Entry>& entries, TCP6Entry* match, - const struct sockaddr* addr) { - const struct in6_addr* remote = IP6FromInetSockaddr(addr); - uint16_t port = PortFromInetSockaddr(addr); - return FindBy6(entries, match, [remote, port](const TCP6Entry& e) { - return (IPv6AddrEqual(&e.remote_addr, remote) && e.remote_port == port); - }); -} - -void ReadIPv6Address(std::string s, struct in6_addr* addr) { - uint32_t a0, a1, a2, a3; - const char* fmt = "%08X%08X%08X%08X"; - EXPECT_EQ(sscanf(s.c_str(), fmt, &a0, &a1, &a2, &a3), 4); - - uint8_t* b = addr->s6_addr; - *((uint32_t*)&b[0]) = a0; - *((uint32_t*)&b[4]) = a1; - *((uint32_t*)&b[8]) = a2; - *((uint32_t*)&b[12]) = a3; -} - -// Returns a parsed representation of /proc/net/tcp6 entries. -PosixErrorOr<std::vector<TCP6Entry>> ProcNetTCP6Entries() { - std::string content; - RETURN_IF_ERRNO(GetContents("/proc/net/tcp6", &content)); - - bool found_header = false; - std::vector<TCP6Entry> entries; - std::vector<std::string> lines = StrSplit(content, '\n'); - std::cerr << "<contents of /proc/net/tcp6>" << std::endl; - for (const std::string& line : lines) { - std::cerr << line << std::endl; - - if (!found_header) { - EXPECT_EQ(line, kProcNetTCP6Header); - found_header = true; - continue; - } - if (line.empty()) { - continue; - } - - // Parse a single entry from /proc/net/tcp6. - // - // Example entries: - // - // clang-format off - // - // sl local_address remote_address st tx_queue rx_queue tr tm->when retrnsmt uid timeout inode - // 0: 00000000000000000000000000000000:1F90 00000000000000000000000000000000:0000 0A 00000000:00000000 00:00000000 00000000 0 0 876340 1 ffff8803da9c9380 100 0 0 10 0 - // 1: 00000000000000000000000000000000:C350 00000000000000000000000000000000:0000 0A 00000000:00000000 00:00000000 00000000 0 0 876987 1 ffff8803ec408000 100 0 0 10 0 - // ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ - // 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 - // - // clang-format on - - TCP6Entry entry; - std::vector<std::string> fields = - StrSplit(line, absl::ByAnyChar(": "), absl::SkipEmpty()); - - ReadIPv6Address(fields[1], &entry.local_addr); - ASSIGN_OR_RETURN_ERRNO(entry.local_port, AtoiBase(fields[2], 16)); - ReadIPv6Address(fields[3], &entry.remote_addr); - ASSIGN_OR_RETURN_ERRNO(entry.remote_port, AtoiBase(fields[4], 16)); - ASSIGN_OR_RETURN_ERRNO(entry.state, AtoiBase(fields[5], 16)); - ASSIGN_OR_RETURN_ERRNO(entry.uid, Atoi<uint64_t>(fields[11])); - ASSIGN_OR_RETURN_ERRNO(entry.inode, Atoi<uint64_t>(fields[13])); - - entries.push_back(entry); - } - std::cerr << "<end of /proc/net/tcp6>" << std::endl; - - return entries; -} - -TEST(ProcNetTCP6, Exists) { - const std::string content = - ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/net/tcp6")); - const std::string header_line = StrCat(kProcNetTCP6Header, "\n"); - if (IsRunningOnGvisor()) { - // Should be just the header since we don't have any tcp sockets yet. - EXPECT_EQ(content, header_line); - } else { - // On a general linux machine, we could have abitrary sockets on the system, - // so just check the header. - EXPECT_THAT(content, ::testing::StartsWith(header_line)); - } -} - -TEST(ProcNetTCP6, EntryUID) { - auto sockets = - ASSERT_NO_ERRNO_AND_VALUE(IPv6TCPAcceptBindSocketPair(0).Create()); - std::vector<TCP6Entry> entries = - ASSERT_NO_ERRNO_AND_VALUE(ProcNetTCP6Entries()); - TCP6Entry e; - - ASSERT_TRUE(FindByLocalAddr6(entries, &e, sockets->first_addr())); - EXPECT_EQ(e.uid, geteuid()); - ASSERT_TRUE(FindByRemoteAddr6(entries, &e, sockets->first_addr())); - EXPECT_EQ(e.uid, geteuid()); -} - -TEST(ProcNetTCP6, BindAcceptConnect) { - auto sockets = - ASSERT_NO_ERRNO_AND_VALUE(IPv6TCPAcceptBindSocketPair(0).Create()); - std::vector<TCP6Entry> entries = - ASSERT_NO_ERRNO_AND_VALUE(ProcNetTCP6Entries()); - // We can only make assertions about the total number of entries if we control - // the entire "machine". - if (IsRunningOnGvisor()) { - EXPECT_EQ(entries.size(), 2); - } - - EXPECT_TRUE(FindByLocalAddr6(entries, nullptr, sockets->first_addr())); - EXPECT_TRUE(FindByRemoteAddr6(entries, nullptr, sockets->first_addr())); -} - -TEST(ProcNetTCP6, InodeReasonable) { - auto sockets = - ASSERT_NO_ERRNO_AND_VALUE(IPv6TCPAcceptBindSocketPair(0).Create()); - std::vector<TCP6Entry> entries = - ASSERT_NO_ERRNO_AND_VALUE(ProcNetTCP6Entries()); - - TCP6Entry accepted_entry; - - ASSERT_TRUE( - FindByLocalAddr6(entries, &accepted_entry, sockets->first_addr())); - EXPECT_NE(accepted_entry.inode, 0); - - TCP6Entry client_entry; - ASSERT_TRUE(FindByRemoteAddr6(entries, &client_entry, sockets->first_addr())); - EXPECT_NE(client_entry.inode, 0); - EXPECT_NE(accepted_entry.inode, client_entry.inode); -} - -TEST(ProcNetTCP6, State) { - std::unique_ptr<FileDescriptor> server = - ASSERT_NO_ERRNO_AND_VALUE(IPv6TCPUnboundSocket(0).Create()); - - auto test_addr = V6Loopback(); - ASSERT_THAT( - bind(server->get(), reinterpret_cast<struct sockaddr*>(&test_addr.addr), - test_addr.addr_len), - SyscallSucceeds()); - - struct sockaddr_in6 addr6; - socklen_t addrlen = sizeof(struct sockaddr_in6); - auto* addr = reinterpret_cast<struct sockaddr*>(&addr6); - ASSERT_THAT(getsockname(server->get(), addr, &addrlen), SyscallSucceeds()); - ASSERT_EQ(addrlen, sizeof(struct sockaddr_in6)); - - ASSERT_THAT(listen(server->get(), 10), SyscallSucceeds()); - std::vector<TCP6Entry> entries = - ASSERT_NO_ERRNO_AND_VALUE(ProcNetTCP6Entries()); - TCP6Entry listen_entry; - - ASSERT_TRUE(FindByLocalAddr6(entries, &listen_entry, addr)); - EXPECT_EQ(listen_entry.state, TCP_LISTEN); - - std::unique_ptr<FileDescriptor> client = - ASSERT_NO_ERRNO_AND_VALUE(IPv6TCPUnboundSocket(0).Create()); - ASSERT_THAT(RetryEINTR(connect)(client->get(), addr, addrlen), - SyscallSucceeds()); - entries = ASSERT_NO_ERRNO_AND_VALUE(ProcNetTCP6Entries()); - ASSERT_TRUE(FindByLocalAddr6(entries, &listen_entry, addr)); - EXPECT_EQ(listen_entry.state, TCP_LISTEN); - TCP6Entry client_entry; - ASSERT_TRUE(FindByRemoteAddr6(entries, &client_entry, addr)); - EXPECT_EQ(client_entry.state, TCP_ESTABLISHED); - - FileDescriptor accepted = - ASSERT_NO_ERRNO_AND_VALUE(Accept(server->get(), nullptr, nullptr)); - - const struct in6_addr* local = IP6FromInetSockaddr(addr); - const uint16_t accepted_local_port = PortFromInetSockaddr(addr); - - entries = ASSERT_NO_ERRNO_AND_VALUE(ProcNetTCP6Entries()); - TCP6Entry accepted_entry; - ASSERT_TRUE(FindBy6( - entries, &accepted_entry, - [client_entry, local, accepted_local_port](const TCP6Entry& e) { - return IPv6AddrEqual(&e.local_addr, local) && - e.local_port == accepted_local_port && - IPv6AddrEqual(&e.remote_addr, &client_entry.local_addr) && - e.remote_port == client_entry.local_port; - })); - EXPECT_EQ(accepted_entry.state, TCP_ESTABLISHED); -} - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/proc_net_udp.cc b/test/syscalls/linux/proc_net_udp.cc deleted file mode 100644 index 786b4b4af..000000000 --- a/test/syscalls/linux/proc_net_udp.cc +++ /dev/null @@ -1,309 +0,0 @@ -// Copyright 2019 Google LLC -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <netinet/tcp.h> -#include <sys/socket.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "absl/strings/numbers.h" -#include "absl/strings/str_join.h" -#include "absl/strings/str_split.h" -#include "test/syscalls/linux/ip_socket_test_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -using absl::StrCat; -using absl::StrFormat; -using absl::StrSplit; - -constexpr char kProcNetUDPHeader[] = - " sl local_address rem_address st tx_queue rx_queue tr tm->when " - "retrnsmt uid timeout inode ref pointer drops "; - -// UDPEntry represents a single entry from /proc/net/udp. -struct UDPEntry { - uint32_t local_addr; - uint16_t local_port; - - uint32_t remote_addr; - uint16_t remote_port; - - uint64_t state; - uint64_t uid; - uint64_t inode; -}; - -std::string DescribeFirstInetSocket(const SocketPair& sockets) { - const struct sockaddr* addr = sockets.first_addr(); - return StrFormat("First test socket: fd:%d %8X:%4X", sockets.first_fd(), - IPFromInetSockaddr(addr), PortFromInetSockaddr(addr)); -} - -std::string DescribeSecondInetSocket(const SocketPair& sockets) { - const struct sockaddr* addr = sockets.second_addr(); - return StrFormat("Second test socket fd:%d %8X:%4X", sockets.second_fd(), - IPFromInetSockaddr(addr), PortFromInetSockaddr(addr)); -} - -// Finds the first entry in 'entries' for which 'predicate' returns true. -// Returns true on match, and set 'match' to a copy of the matching entry. If -// 'match' is null, it's ignored. -bool FindBy(const std::vector<UDPEntry>& entries, UDPEntry* match, - std::function<bool(const UDPEntry&)> predicate) { - for (const UDPEntry& entry : entries) { - if (predicate(entry)) { - if (match != nullptr) { - *match = entry; - } - return true; - } - } - return false; -} - -bool FindByLocalAddr(const std::vector<UDPEntry>& entries, UDPEntry* match, - const struct sockaddr* addr) { - uint32_t host = IPFromInetSockaddr(addr); - uint16_t port = PortFromInetSockaddr(addr); - return FindBy(entries, match, [host, port](const UDPEntry& e) { - return (e.local_addr == host && e.local_port == port); - }); -} - -bool FindByRemoteAddr(const std::vector<UDPEntry>& entries, UDPEntry* match, - const struct sockaddr* addr) { - uint32_t host = IPFromInetSockaddr(addr); - uint16_t port = PortFromInetSockaddr(addr); - return FindBy(entries, match, [host, port](const UDPEntry& e) { - return (e.remote_addr == host && e.remote_port == port); - }); -} - -PosixErrorOr<uint64_t> InodeFromSocketFD(int fd) { - ASSIGN_OR_RETURN_ERRNO(struct stat s, Fstat(fd)); - if (!S_ISSOCK(s.st_mode)) { - return PosixError(EINVAL, StrFormat("FD %d is not a socket", fd)); - } - return s.st_ino; -} - -PosixErrorOr<bool> FindByFD(const std::vector<UDPEntry>& entries, - UDPEntry* match, int fd) { - ASSIGN_OR_RETURN_ERRNO(uint64_t inode, InodeFromSocketFD(fd)); - return FindBy(entries, match, - [inode](const UDPEntry& e) { return (e.inode == inode); }); -} - -// Returns a parsed representation of /proc/net/udp entries. -PosixErrorOr<std::vector<UDPEntry>> ProcNetUDPEntries() { - std::string content; - RETURN_IF_ERRNO(GetContents("/proc/net/udp", &content)); - - bool found_header = false; - std::vector<UDPEntry> entries; - std::vector<std::string> lines = StrSplit(content, '\n'); - std::cerr << "<contents of /proc/net/udp>" << std::endl; - for (const std::string& line : lines) { - std::cerr << line << std::endl; - - if (!found_header) { - EXPECT_EQ(line, kProcNetUDPHeader); - found_header = true; - continue; - } - if (line.empty()) { - continue; - } - - // Parse a single entry from /proc/net/udp. - // - // Example entries: - // - // clang-format off - // - // sl local_address rem_address st tx_queue rx_queue tr tm->when retrnsmt uid timeout inode ref pointer drops - // 3503: 0100007F:0035 00000000:0000 07 00000000:00000000 00:00000000 00000000 0 0 33317 2 0000000000000000 0 - // 3518: 00000000:0044 00000000:0000 07 00000000:00000000 00:00000000 00000000 0 0 40394 2 0000000000000000 0 - // ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ ^ - // 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 - // - // clang-format on - - UDPEntry entry; - std::vector<std::string> fields = - StrSplit(line, absl::ByAnyChar(": "), absl::SkipEmpty()); - - ASSIGN_OR_RETURN_ERRNO(entry.local_addr, AtoiBase(fields[1], 16)); - ASSIGN_OR_RETURN_ERRNO(entry.local_port, AtoiBase(fields[2], 16)); - - ASSIGN_OR_RETURN_ERRNO(entry.remote_addr, AtoiBase(fields[3], 16)); - ASSIGN_OR_RETURN_ERRNO(entry.remote_port, AtoiBase(fields[4], 16)); - - ASSIGN_OR_RETURN_ERRNO(entry.state, AtoiBase(fields[5], 16)); - ASSIGN_OR_RETURN_ERRNO(entry.uid, Atoi<uint64_t>(fields[11])); - ASSIGN_OR_RETURN_ERRNO(entry.inode, Atoi<uint64_t>(fields[13])); - - // Linux shares internal data structures between TCP and UDP sockets. The - // proc entries for UDP sockets share some fields with TCP sockets, but - // these fields should always be zero as they're not meaningful for UDP - // sockets. - EXPECT_EQ(fields[8], "00") << StrFormat("sl:%s, tr", fields[0]); - EXPECT_EQ(fields[9], "00000000") << StrFormat("sl:%s, tm->when", fields[0]); - EXPECT_EQ(fields[10], "00000000") - << StrFormat("sl:%s, retrnsmt", fields[0]); - EXPECT_EQ(fields[12], "0") << StrFormat("sl:%s, timeout", fields[0]); - - entries.push_back(entry); - } - std::cerr << "<end of /proc/net/udp>" << std::endl; - - return entries; -} - -TEST(ProcNetUDP, Exists) { - const std::string content = - ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/net/udp")); - const std::string header_line = StrCat(kProcNetUDPHeader, "\n"); - EXPECT_THAT(content, ::testing::StartsWith(header_line)); -} - -TEST(ProcNetUDP, EntryUID) { - auto sockets = - ASSERT_NO_ERRNO_AND_VALUE(IPv4UDPBidirectionalBindSocketPair(0).Create()); - std::vector<UDPEntry> entries = - ASSERT_NO_ERRNO_AND_VALUE(ProcNetUDPEntries()); - UDPEntry e; - ASSERT_TRUE(FindByLocalAddr(entries, &e, sockets->first_addr())) - << DescribeFirstInetSocket(*sockets); - EXPECT_EQ(e.uid, geteuid()); - ASSERT_TRUE(FindByRemoteAddr(entries, &e, sockets->first_addr())) - << DescribeSecondInetSocket(*sockets); - EXPECT_EQ(e.uid, geteuid()); -} - -TEST(ProcNetUDP, FindMutualEntries) { - auto sockets = - ASSERT_NO_ERRNO_AND_VALUE(IPv4UDPBidirectionalBindSocketPair(0).Create()); - std::vector<UDPEntry> entries = - ASSERT_NO_ERRNO_AND_VALUE(ProcNetUDPEntries()); - - EXPECT_TRUE(FindByLocalAddr(entries, nullptr, sockets->first_addr())) - << DescribeFirstInetSocket(*sockets); - EXPECT_TRUE(FindByRemoteAddr(entries, nullptr, sockets->first_addr())) - << DescribeSecondInetSocket(*sockets); - - EXPECT_TRUE(FindByLocalAddr(entries, nullptr, sockets->second_addr())) - << DescribeSecondInetSocket(*sockets); - EXPECT_TRUE(FindByRemoteAddr(entries, nullptr, sockets->second_addr())) - << DescribeFirstInetSocket(*sockets); -} - -TEST(ProcNetUDP, EntriesRemovedOnClose) { - auto sockets = - ASSERT_NO_ERRNO_AND_VALUE(IPv4UDPBidirectionalBindSocketPair(0).Create()); - std::vector<UDPEntry> entries = - ASSERT_NO_ERRNO_AND_VALUE(ProcNetUDPEntries()); - - EXPECT_TRUE(FindByLocalAddr(entries, nullptr, sockets->first_addr())) - << DescribeFirstInetSocket(*sockets); - EXPECT_TRUE(FindByLocalAddr(entries, nullptr, sockets->second_addr())) - << DescribeSecondInetSocket(*sockets); - - EXPECT_THAT(close(sockets->release_first_fd()), SyscallSucceeds()); - entries = ASSERT_NO_ERRNO_AND_VALUE(ProcNetUDPEntries()); - // First socket's entry should be gone, but the second socket's entry should - // still exist. - EXPECT_FALSE(FindByLocalAddr(entries, nullptr, sockets->first_addr())) - << DescribeFirstInetSocket(*sockets); - EXPECT_TRUE(FindByLocalAddr(entries, nullptr, sockets->second_addr())) - << DescribeSecondInetSocket(*sockets); - - EXPECT_THAT(close(sockets->release_second_fd()), SyscallSucceeds()); - entries = ASSERT_NO_ERRNO_AND_VALUE(ProcNetUDPEntries()); - // Both entries should be gone. - EXPECT_FALSE(FindByLocalAddr(entries, nullptr, sockets->first_addr())) - << DescribeFirstInetSocket(*sockets); - EXPECT_FALSE(FindByLocalAddr(entries, nullptr, sockets->second_addr())) - << DescribeSecondInetSocket(*sockets); -} - -PosixErrorOr<std::unique_ptr<FileDescriptor>> BoundUDPSocket() { - ASSIGN_OR_RETURN_ERRNO(std::unique_ptr<FileDescriptor> socket, - IPv4UDPUnboundSocket(0).Create()); - struct sockaddr_in addr; - addr.sin_family = AF_INET; - addr.sin_addr.s_addr = htonl(INADDR_ANY); - addr.sin_port = 0; - - int res = bind(socket->get(), reinterpret_cast<const struct sockaddr*>(&addr), - sizeof(addr)); - if (res) { - return PosixError(errno, "bind()"); - } - return socket; -} - -TEST(ProcNetUDP, BoundEntry) { - std::unique_ptr<FileDescriptor> socket = - ASSERT_NO_ERRNO_AND_VALUE(BoundUDPSocket()); - struct sockaddr addr; - socklen_t len = sizeof(addr); - ASSERT_THAT(getsockname(socket->get(), &addr, &len), SyscallSucceeds()); - uint16_t port = PortFromInetSockaddr(&addr); - - std::vector<UDPEntry> entries = - ASSERT_NO_ERRNO_AND_VALUE(ProcNetUDPEntries()); - UDPEntry e; - ASSERT_TRUE(ASSERT_NO_ERRNO_AND_VALUE(FindByFD(entries, &e, socket->get()))); - EXPECT_EQ(e.local_port, port); - EXPECT_EQ(e.remote_addr, 0); - EXPECT_EQ(e.remote_port, 0); -} - -TEST(ProcNetUDP, BoundSocketStateClosed) { - std::unique_ptr<FileDescriptor> socket = - ASSERT_NO_ERRNO_AND_VALUE(BoundUDPSocket()); - std::vector<UDPEntry> entries = - ASSERT_NO_ERRNO_AND_VALUE(ProcNetUDPEntries()); - UDPEntry e; - ASSERT_TRUE(ASSERT_NO_ERRNO_AND_VALUE(FindByFD(entries, &e, socket->get()))); - EXPECT_EQ(e.state, TCP_CLOSE); -} - -TEST(ProcNetUDP, ConnectedSocketStateEstablished) { - auto sockets = - ASSERT_NO_ERRNO_AND_VALUE(IPv4UDPBidirectionalBindSocketPair(0).Create()); - std::vector<UDPEntry> entries = - ASSERT_NO_ERRNO_AND_VALUE(ProcNetUDPEntries()); - - UDPEntry e; - ASSERT_TRUE(FindByLocalAddr(entries, &e, sockets->first_addr())) - << DescribeFirstInetSocket(*sockets); - EXPECT_EQ(e.state, TCP_ESTABLISHED); - - ASSERT_TRUE(FindByLocalAddr(entries, &e, sockets->second_addr())) - << DescribeSecondInetSocket(*sockets); - EXPECT_EQ(e.state, TCP_ESTABLISHED); -} - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/proc_net_unix.cc b/test/syscalls/linux/proc_net_unix.cc deleted file mode 100644 index 66db0acaa..000000000 --- a/test/syscalls/linux/proc_net_unix.cc +++ /dev/null @@ -1,443 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "gtest/gtest.h" -#include "absl/strings/numbers.h" -#include "absl/strings/str_format.h" -#include "absl/strings/str_join.h" -#include "absl/strings/str_split.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/fs_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -using absl::StrCat; -using absl::StreamFormat; -using absl::StrFormat; - -constexpr char kProcNetUnixHeader[] = - "Num RefCount Protocol Flags Type St Inode Path"; - -// Possible values of the "st" field in a /proc/net/unix entry. Source: Linux -// kernel, include/uapi/linux/net.h. -enum { - SS_FREE = 0, // Not allocated - SS_UNCONNECTED, // Unconnected to any socket - SS_CONNECTING, // In process of connecting - SS_CONNECTED, // Connected to socket - SS_DISCONNECTING // In process of disconnecting -}; - -// UnixEntry represents a single entry from /proc/net/unix. -struct UnixEntry { - uintptr_t addr; - uint64_t refs; - uint64_t protocol; - uint64_t flags; - uint64_t type; - uint64_t state; - uint64_t inode; - std::string path; -}; - -// Abstract socket paths can have either trailing null bytes or '@'s as padding -// at the end, depending on the linux version. This function strips any such -// padding. -void StripAbstractPathPadding(std::string* s) { - const char pad_char = s->back(); - if (pad_char != '\0' && pad_char != '@') { - return; - } - - const auto last_pos = s->find_last_not_of(pad_char); - if (last_pos != std::string::npos) { - s->resize(last_pos + 1); - } -} - -// Precondition: addr must be a unix socket address (i.e. sockaddr_un) and -// addr->sun_path must be null-terminated. This is always the case if addr comes -// from Linux: -// -// Per man unix(7): -// -// "When the address of a pathname socket is returned (by [getsockname(2)]), its -// length is -// -// offsetof(struct sockaddr_un, sun_path) + strlen(sun_path) + 1 -// -// and sun_path contains the null-terminated pathname." -std::string ExtractPath(const struct sockaddr* addr) { - const char* path = - reinterpret_cast<const struct sockaddr_un*>(addr)->sun_path; - // Note: sockaddr_un.sun_path is an embedded character array of length - // UNIX_PATH_MAX, so we can always safely dereference the first 2 bytes below. - // - // We also rely on the path being null-terminated. - if (path[0] == 0) { - std::string abstract_path = StrCat("@", &path[1]); - StripAbstractPathPadding(&abstract_path); - return abstract_path; - } - return std::string(path); -} - -// Returns a parsed representation of /proc/net/unix entries. -PosixErrorOr<std::vector<UnixEntry>> ProcNetUnixEntries() { - std::string content; - RETURN_IF_ERRNO(GetContents("/proc/net/unix", &content)); - - bool skipped_header = false; - std::vector<UnixEntry> entries; - std::vector<std::string> lines = absl::StrSplit(content, '\n'); - std::cerr << "<contents of /proc/net/unix>" << std::endl; - for (std::string line : lines) { - // Emit the proc entry to the test output to provide context for the test - // results. - std::cerr << line << std::endl; - - if (!skipped_header) { - EXPECT_EQ(line, kProcNetUnixHeader); - skipped_header = true; - continue; - } - if (line.empty()) { - continue; - } - - // Parse a single entry from /proc/net/unix. - // - // Sample file: - // - // clang-format off - // - // Num RefCount Protocol Flags Type St Inode Path" - // ffffa130e7041c00: 00000002 00000000 00010000 0001 01 1299413685 /tmp/control_server/13293772586877554487 - // ffffa14f547dc400: 00000002 00000000 00010000 0001 01 3793 @remote_coredump - // - // clang-format on - // - // Note that from the second entry, the inode number can be padded using - // spaces, so we need to handle it separately during parsing. See - // net/unix/af_unix.c:unix_seq_show() for how these entries are produced. In - // particular, only the inode field is padded with spaces. - UnixEntry entry; - - // Process the first 6 fields, up to but not including "Inode". - std::vector<std::string> fields = - absl::StrSplit(line, absl::MaxSplits(' ', 6)); - - if (fields.size() < 7) { - return PosixError(EINVAL, StrFormat("Invalid entry: '%s'\n", line)); - } - - // AtoiBase can't handle the ':' in the "Num" field, so strip it out. - std::vector<std::string> addr = absl::StrSplit(fields[0], ':'); - ASSIGN_OR_RETURN_ERRNO(entry.addr, AtoiBase(addr[0], 16)); - - ASSIGN_OR_RETURN_ERRNO(entry.refs, AtoiBase(fields[1], 16)); - ASSIGN_OR_RETURN_ERRNO(entry.protocol, AtoiBase(fields[2], 16)); - ASSIGN_OR_RETURN_ERRNO(entry.flags, AtoiBase(fields[3], 16)); - ASSIGN_OR_RETURN_ERRNO(entry.type, AtoiBase(fields[4], 16)); - ASSIGN_OR_RETURN_ERRNO(entry.state, AtoiBase(fields[5], 16)); - - absl::string_view rest = absl::StripAsciiWhitespace(fields[6]); - fields = absl::StrSplit(rest, absl::MaxSplits(' ', 1)); - if (fields.empty()) { - return PosixError( - EINVAL, StrFormat("Invalid entry, missing 'Inode': '%s'\n", line)); - } - ASSIGN_OR_RETURN_ERRNO(entry.inode, AtoiBase(fields[0], 10)); - - entry.path = ""; - if (fields.size() > 1) { - entry.path = fields[1]; - StripAbstractPathPadding(&entry.path); - } - - entries.push_back(entry); - } - std::cerr << "<end of /proc/net/unix>" << std::endl; - - return entries; -} - -// Finds the first entry in 'entries' for which 'predicate' returns true. -// Returns true on match, and sets 'match' to point to the matching entry. -bool FindBy(std::vector<UnixEntry> entries, UnixEntry* match, - std::function<bool(const UnixEntry&)> predicate) { - for (int i = 0; i < entries.size(); ++i) { - if (predicate(entries[i])) { - *match = entries[i]; - return true; - } - } - return false; -} - -bool FindByPath(std::vector<UnixEntry> entries, UnixEntry* match, - const std::string& path) { - return FindBy(entries, match, - [path](const UnixEntry& e) { return e.path == path; }); -} - -TEST(ProcNetUnix, Exists) { - const std::string content = - ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/net/unix")); - const std::string header_line = StrCat(kProcNetUnixHeader, "\n"); - if (IsRunningOnGvisor()) { - // Should be just the header since we don't have any unix domain sockets - // yet. - EXPECT_EQ(content, header_line); - } else { - // However, on a general linux machine, we could have abitrary sockets on - // the system, so just check the header. - EXPECT_THAT(content, ::testing::StartsWith(header_line)); - } -} - -TEST(ProcNetUnix, FilesystemBindAcceptConnect) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE( - FilesystemBoundUnixDomainSocketPair(SOCK_STREAM).Create()); - - std::string path1 = ExtractPath(sockets->first_addr()); - std::string path2 = ExtractPath(sockets->second_addr()); - std::cerr << StreamFormat("Server socket address (path1): %s\n", path1); - std::cerr << StreamFormat("Client socket address (path2): %s\n", path2); - - std::vector<UnixEntry> entries = - ASSERT_NO_ERRNO_AND_VALUE(ProcNetUnixEntries()); - if (IsRunningOnGvisor()) { - EXPECT_EQ(entries.size(), 2); - } - - // The server-side socket's path is listed in the socket entry... - UnixEntry s1; - EXPECT_TRUE(FindByPath(entries, &s1, path1)); - - // ... but the client-side socket's path is not. - UnixEntry s2; - EXPECT_FALSE(FindByPath(entries, &s2, path2)); -} - -TEST(ProcNetUnix, AbstractBindAcceptConnect) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE( - AbstractBoundUnixDomainSocketPair(SOCK_STREAM).Create()); - - std::string path1 = ExtractPath(sockets->first_addr()); - std::string path2 = ExtractPath(sockets->second_addr()); - std::cerr << StreamFormat("Server socket address (path1): '%s'\n", path1); - std::cerr << StreamFormat("Client socket address (path2): '%s'\n", path2); - - std::vector<UnixEntry> entries = - ASSERT_NO_ERRNO_AND_VALUE(ProcNetUnixEntries()); - if (IsRunningOnGvisor()) { - EXPECT_EQ(entries.size(), 2); - } - - // The server-side socket's path is listed in the socket entry... - UnixEntry s1; - EXPECT_TRUE(FindByPath(entries, &s1, path1)); - - // ... but the client-side socket's path is not. - UnixEntry s2; - EXPECT_FALSE(FindByPath(entries, &s2, path2)); -} - -TEST(ProcNetUnix, SocketPair) { - // Under gvisor, ensure a socketpair() syscall creates exactly 2 new - // entries. We have no way to verify this under Linux, as we have no control - // over socket creation on a general Linux machine. - SKIP_IF(!IsRunningOnGvisor()); - - std::vector<UnixEntry> entries = - ASSERT_NO_ERRNO_AND_VALUE(ProcNetUnixEntries()); - ASSERT_EQ(entries.size(), 0); - - auto sockets = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_STREAM).Create()); - - entries = ASSERT_NO_ERRNO_AND_VALUE(ProcNetUnixEntries()); - EXPECT_EQ(entries.size(), 2); -} - -TEST(ProcNetUnix, StreamSocketStateUnconnectedOnBind) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE( - AbstractUnboundUnixDomainSocketPair(SOCK_STREAM).Create()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - std::vector<UnixEntry> entries = - ASSERT_NO_ERRNO_AND_VALUE(ProcNetUnixEntries()); - - const std::string address = ExtractPath(sockets->first_addr()); - UnixEntry bind_entry; - ASSERT_TRUE(FindByPath(entries, &bind_entry, address)); - EXPECT_EQ(bind_entry.state, SS_UNCONNECTED); -} - -TEST(ProcNetUnix, StreamSocketStateStateUnconnectedOnListen) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE( - AbstractUnboundUnixDomainSocketPair(SOCK_STREAM).Create()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - std::vector<UnixEntry> entries = - ASSERT_NO_ERRNO_AND_VALUE(ProcNetUnixEntries()); - - const std::string address = ExtractPath(sockets->first_addr()); - UnixEntry bind_entry; - ASSERT_TRUE(FindByPath(entries, &bind_entry, address)); - EXPECT_EQ(bind_entry.state, SS_UNCONNECTED); - - ASSERT_THAT(listen(sockets->first_fd(), 5), SyscallSucceeds()); - - entries = ASSERT_NO_ERRNO_AND_VALUE(ProcNetUnixEntries()); - UnixEntry listen_entry; - ASSERT_TRUE( - FindByPath(entries, &listen_entry, ExtractPath(sockets->first_addr()))); - EXPECT_EQ(listen_entry.state, SS_UNCONNECTED); - // The bind and listen entries should refer to the same socket. - EXPECT_EQ(listen_entry.inode, bind_entry.inode); -} - -TEST(ProcNetUnix, StreamSocketStateStateConnectedOnAccept) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE( - AbstractUnboundUnixDomainSocketPair(SOCK_STREAM).Create()); - const std::string address = ExtractPath(sockets->first_addr()); - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - ASSERT_THAT(listen(sockets->first_fd(), 5), SyscallSucceeds()); - std::vector<UnixEntry> entries = - ASSERT_NO_ERRNO_AND_VALUE(ProcNetUnixEntries()); - UnixEntry listen_entry; - ASSERT_TRUE( - FindByPath(entries, &listen_entry, ExtractPath(sockets->first_addr()))); - - ASSERT_THAT(connect(sockets->second_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - int clientfd; - ASSERT_THAT(clientfd = accept(sockets->first_fd(), nullptr, nullptr), - SyscallSucceeds()); - - // Find the entry for the accepted socket. UDS proc entries don't have a - // remote address, so we distinguish the accepted socket from the listen - // socket by checking for a different inode. - entries = ASSERT_NO_ERRNO_AND_VALUE(ProcNetUnixEntries()); - UnixEntry accept_entry; - ASSERT_TRUE(FindBy( - entries, &accept_entry, [address, listen_entry](const UnixEntry& e) { - return e.path == address && e.inode != listen_entry.inode; - })); - EXPECT_EQ(accept_entry.state, SS_CONNECTED); - // Listen entry should still be in SS_UNCONNECTED state. - ASSERT_TRUE(FindBy(entries, &listen_entry, - [&sockets, listen_entry](const UnixEntry& e) { - return e.path == ExtractPath(sockets->first_addr()) && - e.inode == listen_entry.inode; - })); - EXPECT_EQ(listen_entry.state, SS_UNCONNECTED); -} - -TEST(ProcNetUnix, DgramSocketStateDisconnectingOnBind) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE( - AbstractUnboundUnixDomainSocketPair(SOCK_DGRAM).Create()); - - std::vector<UnixEntry> entries = - ASSERT_NO_ERRNO_AND_VALUE(ProcNetUnixEntries()); - - // On gVisor, the only two UDS on the system are the ones we just created and - // we rely on this to locate the test socket entries in the remainder of the - // test. On a generic Linux system, we have no easy way to locate the - // corresponding entries, as they don't have an address yet. - if (IsRunningOnGvisor()) { - ASSERT_EQ(entries.size(), 2); - for (auto e : entries) { - ASSERT_EQ(e.state, SS_DISCONNECTING); - } - } - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - entries = ASSERT_NO_ERRNO_AND_VALUE(ProcNetUnixEntries()); - const std::string address = ExtractPath(sockets->first_addr()); - UnixEntry bind_entry; - ASSERT_TRUE(FindByPath(entries, &bind_entry, address)); - EXPECT_EQ(bind_entry.state, SS_UNCONNECTED); -} - -TEST(ProcNetUnix, DgramSocketStateConnectingOnConnect) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE( - AbstractUnboundUnixDomainSocketPair(SOCK_DGRAM).Create()); - - std::vector<UnixEntry> entries = - ASSERT_NO_ERRNO_AND_VALUE(ProcNetUnixEntries()); - - // On gVisor, the only two UDS on the system are the ones we just created and - // we rely on this to locate the test socket entries in the remainder of the - // test. On a generic Linux system, we have no easy way to locate the - // corresponding entries, as they don't have an address yet. - if (IsRunningOnGvisor()) { - ASSERT_EQ(entries.size(), 2); - for (auto e : entries) { - ASSERT_EQ(e.state, SS_DISCONNECTING); - } - } - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - entries = ASSERT_NO_ERRNO_AND_VALUE(ProcNetUnixEntries()); - const std::string address = ExtractPath(sockets->first_addr()); - UnixEntry bind_entry; - ASSERT_TRUE(FindByPath(entries, &bind_entry, address)); - - ASSERT_THAT(connect(sockets->second_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - entries = ASSERT_NO_ERRNO_AND_VALUE(ProcNetUnixEntries()); - - // Once again, we have no easy way to identify the connecting socket as it has - // no listed address. We can only identify the entry as the "non-bind socket - // entry" on gVisor, where we're guaranteed to have only the two entries we - // create during this test. - if (IsRunningOnGvisor()) { - ASSERT_EQ(entries.size(), 2); - UnixEntry connect_entry; - ASSERT_TRUE( - FindBy(entries, &connect_entry, [bind_entry](const UnixEntry& e) { - return e.inode != bind_entry.inode; - })); - EXPECT_EQ(connect_entry.state, SS_CONNECTING); - } -} - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/proc_pid_smaps.cc b/test/syscalls/linux/proc_pid_smaps.cc deleted file mode 100644 index 7f2e8f203..000000000 --- a/test/syscalls/linux/proc_pid_smaps.cc +++ /dev/null @@ -1,468 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <stddef.h> -#include <stdint.h> - -#include <algorithm> -#include <iostream> -#include <string> -#include <utility> -#include <vector> - -#include "absl/container/flat_hash_set.h" -#include "absl/strings/str_cat.h" -#include "absl/strings/str_format.h" -#include "absl/strings/str_split.h" -#include "absl/strings/string_view.h" -#include "absl/types/optional.h" -#include "test/util/file_descriptor.h" -#include "test/util/fs_util.h" -#include "test/util/memory_util.h" -#include "test/util/posix_error.h" -#include "test/util/proc_util.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -using ::testing::Contains; -using ::testing::ElementsAreArray; -using ::testing::IsSupersetOf; -using ::testing::Not; -using ::testing::Optional; - -namespace gvisor { -namespace testing { - -namespace { - -struct ProcPidSmapsEntry { - ProcMapsEntry maps_entry; - - // These fields should always exist, as they were included in e070ad49f311 - // "[PATCH] add /proc/pid/smaps". - size_t size_kb; - size_t rss_kb; - size_t shared_clean_kb; - size_t shared_dirty_kb; - size_t private_clean_kb; - size_t private_dirty_kb; - - // These fields were added later and may not be present. - absl::optional<size_t> pss_kb; - absl::optional<size_t> referenced_kb; - absl::optional<size_t> anonymous_kb; - absl::optional<size_t> anon_huge_pages_kb; - absl::optional<size_t> shared_hugetlb_kb; - absl::optional<size_t> private_hugetlb_kb; - absl::optional<size_t> swap_kb; - absl::optional<size_t> swap_pss_kb; - absl::optional<size_t> kernel_page_size_kb; - absl::optional<size_t> mmu_page_size_kb; - absl::optional<size_t> locked_kb; - - // Caution: "Note that there is no guarantee that every flag and associated - // mnemonic will be present in all further kernel releases. Things get - // changed, the flags may be vanished or the reverse -- new added." - Linux - // Documentation/filesystems/proc.txt, on VmFlags. Avoid checking for any - // flags that are not extremely well-established. - absl::optional<std::vector<std::string>> vm_flags; -}; - -// Given the value part of a /proc/[pid]/smaps field containing a value in kB -// (for example, " 4 kB", returns the value in kB (in this example, 4). -PosixErrorOr<size_t> SmapsValueKb(absl::string_view value) { - // TODO(jamieliu): let us use RE2 or <regex> - std::pair<absl::string_view, absl::string_view> parts = - absl::StrSplit(value, ' ', absl::SkipEmpty()); - if (parts.second != "kB") { - return PosixError(EINVAL, - absl::StrCat("invalid smaps field value: ", value)); - } - ASSIGN_OR_RETURN_ERRNO(auto val_kb, Atoi<size_t>(parts.first)); - return val_kb; -} - -PosixErrorOr<std::vector<ProcPidSmapsEntry>> ParseProcPidSmaps( - absl::string_view contents) { - std::vector<ProcPidSmapsEntry> entries; - absl::optional<ProcPidSmapsEntry> entry; - bool have_size_kb = false; - bool have_rss_kb = false; - bool have_shared_clean_kb = false; - bool have_shared_dirty_kb = false; - bool have_private_clean_kb = false; - bool have_private_dirty_kb = false; - - auto const finish_entry = [&] { - if (entry) { - if (!have_size_kb) { - return PosixError(EINVAL, "smaps entry is missing Size"); - } - if (!have_rss_kb) { - return PosixError(EINVAL, "smaps entry is missing Rss"); - } - if (!have_shared_clean_kb) { - return PosixError(EINVAL, "smaps entry is missing Shared_Clean"); - } - if (!have_shared_dirty_kb) { - return PosixError(EINVAL, "smaps entry is missing Shared_Dirty"); - } - if (!have_private_clean_kb) { - return PosixError(EINVAL, "smaps entry is missing Private_Clean"); - } - if (!have_private_dirty_kb) { - return PosixError(EINVAL, "smaps entry is missing Private_Dirty"); - } - // std::move(entry.value()) instead of std::move(entry).value(), because - // otherwise tools may report a "use-after-move" warning, which is - // spurious because entry.emplace() below resets entry to a new - // ProcPidSmapsEntry. - entries.emplace_back(std::move(entry.value())); - } - entry.emplace(); - have_size_kb = false; - have_rss_kb = false; - have_shared_clean_kb = false; - have_shared_dirty_kb = false; - have_private_clean_kb = false; - have_private_dirty_kb = false; - return NoError(); - }; - - // Holds key/value pairs from smaps field lines. Declared here so it can be - // captured by reference by the following lambdas. - std::vector<absl::string_view> key_value; - - auto const on_required_field_kb = [&](size_t* field, bool* have_field) { - if (*have_field) { - return PosixError( - EINVAL, - absl::StrFormat("smaps entry has duplicate %s line", key_value[0])); - } - ASSIGN_OR_RETURN_ERRNO(*field, SmapsValueKb(key_value[1])); - *have_field = true; - return NoError(); - }; - - auto const on_optional_field_kb = [&](absl::optional<size_t>* field) { - if (*field) { - return PosixError( - EINVAL, - absl::StrFormat("smaps entry has duplicate %s line", key_value[0])); - } - ASSIGN_OR_RETURN_ERRNO(*field, SmapsValueKb(key_value[1])); - return NoError(); - }; - - absl::flat_hash_set<std::string> unknown_fields; - auto const on_unknown_field = [&] { - absl::string_view key = key_value[0]; - // Don't mention unknown fields more than once. - if (unknown_fields.count(key)) { - return; - } - unknown_fields.insert(std::string(key)); - std::cerr << "skipping unknown smaps field " << key; - }; - - auto lines = absl::StrSplit(contents, '\n', absl::SkipEmpty()); - for (absl::string_view l : lines) { - // Is this line a valid /proc/[pid]/maps entry? - auto maybe_maps_entry = ParseProcMapsLine(l); - if (maybe_maps_entry.ok()) { - // This marks the beginning of a new /proc/[pid]/smaps entry. - RETURN_IF_ERRNO(finish_entry()); - entry->maps_entry = std::move(maybe_maps_entry).ValueOrDie(); - continue; - } - // Otherwise it's a field in an existing /proc/[pid]/smaps entry of the form - // "key:value" (where value in practice will be preceded by a variable - // amount of whitespace). - if (!entry) { - std::cerr << "smaps line not considered a maps line: " - << maybe_maps_entry.error_message(); - return PosixError( - EINVAL, - absl::StrCat("smaps field line without preceding maps line: ", l)); - } - key_value = absl::StrSplit(l, absl::MaxSplits(':', 1)); - if (key_value.size() != 2) { - return PosixError(EINVAL, absl::StrCat("invalid smaps field line: ", l)); - } - absl::string_view const key = key_value[0]; - if (key == "Size") { - RETURN_IF_ERRNO(on_required_field_kb(&entry->size_kb, &have_size_kb)); - } else if (key == "Rss") { - RETURN_IF_ERRNO(on_required_field_kb(&entry->rss_kb, &have_rss_kb)); - } else if (key == "Shared_Clean") { - RETURN_IF_ERRNO( - on_required_field_kb(&entry->shared_clean_kb, &have_shared_clean_kb)); - } else if (key == "Shared_Dirty") { - RETURN_IF_ERRNO( - on_required_field_kb(&entry->shared_dirty_kb, &have_shared_dirty_kb)); - } else if (key == "Private_Clean") { - RETURN_IF_ERRNO(on_required_field_kb(&entry->private_clean_kb, - &have_private_clean_kb)); - } else if (key == "Private_Dirty") { - RETURN_IF_ERRNO(on_required_field_kb(&entry->private_dirty_kb, - &have_private_dirty_kb)); - } else if (key == "Pss") { - RETURN_IF_ERRNO(on_optional_field_kb(&entry->pss_kb)); - } else if (key == "Referenced") { - RETURN_IF_ERRNO(on_optional_field_kb(&entry->referenced_kb)); - } else if (key == "Anonymous") { - RETURN_IF_ERRNO(on_optional_field_kb(&entry->anonymous_kb)); - } else if (key == "AnonHugePages") { - RETURN_IF_ERRNO(on_optional_field_kb(&entry->anon_huge_pages_kb)); - } else if (key == "Shared_Hugetlb") { - RETURN_IF_ERRNO(on_optional_field_kb(&entry->shared_hugetlb_kb)); - } else if (key == "Private_Hugetlb") { - RETURN_IF_ERRNO(on_optional_field_kb(&entry->private_hugetlb_kb)); - } else if (key == "Swap") { - RETURN_IF_ERRNO(on_optional_field_kb(&entry->swap_kb)); - } else if (key == "SwapPss") { - RETURN_IF_ERRNO(on_optional_field_kb(&entry->swap_pss_kb)); - } else if (key == "KernelPageSize") { - RETURN_IF_ERRNO(on_optional_field_kb(&entry->kernel_page_size_kb)); - } else if (key == "MMUPageSize") { - RETURN_IF_ERRNO(on_optional_field_kb(&entry->mmu_page_size_kb)); - } else if (key == "Locked") { - RETURN_IF_ERRNO(on_optional_field_kb(&entry->locked_kb)); - } else if (key == "VmFlags") { - if (entry->vm_flags) { - return PosixError(EINVAL, "duplicate VmFlags line"); - } - entry->vm_flags = absl::StrSplit(key_value[1], ' ', absl::SkipEmpty()); - } else { - on_unknown_field(); - } - } - RETURN_IF_ERRNO(finish_entry()); - return entries; -}; - -TEST(ParseProcPidSmapsTest, Correctness) { - auto entries = ASSERT_NO_ERRNO_AND_VALUE( - ParseProcPidSmaps("0-10000 rw-s 00000000 00:00 0 " - " /dev/zero (deleted)\n" - "Size: 0 kB\n" - "Rss: 1 kB\n" - "Pss: 2 kB\n" - "Shared_Clean: 3 kB\n" - "Shared_Dirty: 4 kB\n" - "Private_Clean: 5 kB\n" - "Private_Dirty: 6 kB\n" - "Referenced: 7 kB\n" - "Anonymous: 8 kB\n" - "AnonHugePages: 9 kB\n" - "Shared_Hugetlb: 10 kB\n" - "Private_Hugetlb: 11 kB\n" - "Swap: 12 kB\n" - "SwapPss: 13 kB\n" - "KernelPageSize: 14 kB\n" - "MMUPageSize: 15 kB\n" - "Locked: 16 kB\n" - "FutureUnknownKey: 17 kB\n" - "VmFlags: rd wr sh mr mw me ms lo ?? sd \n")); - ASSERT_EQ(entries.size(), 1); - auto& entry = entries[0]; - EXPECT_EQ(entry.maps_entry.filename, "/dev/zero (deleted)"); - EXPECT_EQ(entry.size_kb, 0); - EXPECT_EQ(entry.rss_kb, 1); - EXPECT_THAT(entry.pss_kb, Optional(2)); - EXPECT_EQ(entry.shared_clean_kb, 3); - EXPECT_EQ(entry.shared_dirty_kb, 4); - EXPECT_EQ(entry.private_clean_kb, 5); - EXPECT_EQ(entry.private_dirty_kb, 6); - EXPECT_THAT(entry.referenced_kb, Optional(7)); - EXPECT_THAT(entry.anonymous_kb, Optional(8)); - EXPECT_THAT(entry.anon_huge_pages_kb, Optional(9)); - EXPECT_THAT(entry.shared_hugetlb_kb, Optional(10)); - EXPECT_THAT(entry.private_hugetlb_kb, Optional(11)); - EXPECT_THAT(entry.swap_kb, Optional(12)); - EXPECT_THAT(entry.swap_pss_kb, Optional(13)); - EXPECT_THAT(entry.kernel_page_size_kb, Optional(14)); - EXPECT_THAT(entry.mmu_page_size_kb, Optional(15)); - EXPECT_THAT(entry.locked_kb, Optional(16)); - EXPECT_THAT(entry.vm_flags, - Optional(ElementsAreArray({"rd", "wr", "sh", "mr", "mw", "me", - "ms", "lo", "??", "sd"}))); -} - -// Returns the unique entry in entries containing the given address. -PosixErrorOr<ProcPidSmapsEntry> FindUniqueSmapsEntry( - std::vector<ProcPidSmapsEntry> const& entries, uintptr_t addr) { - auto const pred = [&](ProcPidSmapsEntry const& entry) { - return entry.maps_entry.start <= addr && addr < entry.maps_entry.end; - }; - auto const it = std::find_if(entries.begin(), entries.end(), pred); - if (it == entries.end()) { - return PosixError(EINVAL, - absl::StrFormat("no entry contains address %#x", addr)); - } - auto const it2 = std::find_if(it + 1, entries.end(), pred); - if (it2 != entries.end()) { - return PosixError( - EINVAL, - absl::StrFormat("overlapping entries [%#x-%#x) and [%#x-%#x) both " - "contain address %#x", - it->maps_entry.start, it->maps_entry.end, - it2->maps_entry.start, it2->maps_entry.end, addr)); - } - return *it; -} - -PosixErrorOr<std::vector<ProcPidSmapsEntry>> ReadProcSelfSmaps() { - ASSIGN_OR_RETURN_ERRNO(std::string contents, GetContents("/proc/self/smaps")); - return ParseProcPidSmaps(contents); -} - -TEST(ProcPidSmapsTest, SharedAnon) { - // Map with MAP_POPULATE so we get some RSS. - Mapping const m = ASSERT_NO_ERRNO_AND_VALUE(MmapAnon( - 2 * kPageSize, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_POPULATE)); - auto const entries = ASSERT_NO_ERRNO_AND_VALUE(ReadProcSelfSmaps()); - auto const entry = - ASSERT_NO_ERRNO_AND_VALUE(FindUniqueSmapsEntry(entries, m.addr())); - - EXPECT_EQ(entry.size_kb, m.len() / 1024); - // It's possible that populated pages have been swapped out, so RSS might be - // less than size. - EXPECT_LE(entry.rss_kb, entry.size_kb); - - if (entry.pss_kb) { - // PSS should be exactly equal to RSS since no other address spaces should - // be sharing our new mapping. - EXPECT_EQ(entry.pss_kb.value(), entry.rss_kb); - } - - // "Shared" and "private" in smaps refers to whether or not *physical pages* - // are shared; thus all pages in our MAP_SHARED mapping should nevertheless - // be private. - EXPECT_EQ(entry.shared_clean_kb, 0); - EXPECT_EQ(entry.shared_dirty_kb, 0); - EXPECT_EQ(entry.private_clean_kb + entry.private_dirty_kb, entry.rss_kb) - << "Private_Clean = " << entry.private_clean_kb - << " kB, Private_Dirty = " << entry.private_dirty_kb << " kB"; - - // Shared anonymous mappings are implemented as a shmem file, so their pages - // are not PageAnon. - if (entry.anonymous_kb) { - EXPECT_EQ(entry.anonymous_kb.value(), 0); - } - - if (entry.vm_flags) { - EXPECT_THAT(entry.vm_flags.value(), - IsSupersetOf({"rd", "wr", "sh", "mr", "mw", "me", "ms"})); - EXPECT_THAT(entry.vm_flags.value(), Not(Contains("ex"))); - } -} - -TEST(ProcPidSmapsTest, PrivateAnon) { - // Map with MAP_POPULATE so we get some RSS. - Mapping const m = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(2 * kPageSize, PROT_WRITE, MAP_PRIVATE | MAP_POPULATE)); - auto const entries = ASSERT_NO_ERRNO_AND_VALUE(ReadProcSelfSmaps()); - auto const entry = - ASSERT_NO_ERRNO_AND_VALUE(FindUniqueSmapsEntry(entries, m.addr())); - - // It's possible that our mapping was merged with another vma, so the smaps - // entry might be bigger than our original mapping. - EXPECT_GE(entry.size_kb, m.len() / 1024); - EXPECT_LE(entry.rss_kb, entry.size_kb); - if (entry.pss_kb) { - EXPECT_LE(entry.pss_kb.value(), entry.rss_kb); - } - - if (entry.anonymous_kb) { - EXPECT_EQ(entry.anonymous_kb.value(), entry.rss_kb); - } - - if (entry.vm_flags) { - EXPECT_THAT(entry.vm_flags.value(), IsSupersetOf({"wr", "mr", "mw", "me"})); - // We passed PROT_WRITE to mmap. On at least x86, the mapping is in - // practice readable because there is no way to configure the MMU to make - // pages writable but not readable. However, VmFlags should reflect the - // flags set on the VMA, so "rd" (VM_READ) should not appear in VmFlags. - EXPECT_THAT(entry.vm_flags.value(), Not(Contains("rd"))); - EXPECT_THAT(entry.vm_flags.value(), Not(Contains("ex"))); - EXPECT_THAT(entry.vm_flags.value(), Not(Contains("sh"))); - EXPECT_THAT(entry.vm_flags.value(), Not(Contains("ms"))); - } -} - -TEST(ProcPidSmapsTest, SharedReadOnlyFile) { - size_t const kFileSize = kPageSize; - - auto const temp_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - ASSERT_THAT(truncate(temp_file.path().c_str(), kFileSize), SyscallSucceeds()); - auto const fd = ASSERT_NO_ERRNO_AND_VALUE(Open(temp_file.path(), O_RDONLY)); - - auto const m = ASSERT_NO_ERRNO_AND_VALUE(Mmap( - nullptr, kFileSize, PROT_READ, MAP_SHARED | MAP_POPULATE, fd.get(), 0)); - auto const entries = ASSERT_NO_ERRNO_AND_VALUE(ReadProcSelfSmaps()); - auto const entry = - ASSERT_NO_ERRNO_AND_VALUE(FindUniqueSmapsEntry(entries, m.addr())); - - // Most of the same logic as the SharedAnon case applies. - EXPECT_EQ(entry.size_kb, kFileSize / 1024); - EXPECT_LE(entry.rss_kb, entry.size_kb); - if (entry.pss_kb) { - EXPECT_EQ(entry.pss_kb.value(), entry.rss_kb); - } - EXPECT_EQ(entry.shared_clean_kb, 0); - EXPECT_EQ(entry.shared_dirty_kb, 0); - EXPECT_EQ(entry.private_clean_kb + entry.private_dirty_kb, entry.rss_kb) - << "Private_Clean = " << entry.private_clean_kb - << " kB, Private_Dirty = " << entry.private_dirty_kb << " kB"; - if (entry.anonymous_kb) { - EXPECT_EQ(entry.anonymous_kb.value(), 0); - } - - if (entry.vm_flags) { - EXPECT_THAT(entry.vm_flags.value(), IsSupersetOf({"rd", "mr", "me", "ms"})); - EXPECT_THAT(entry.vm_flags.value(), Not(Contains("wr"))); - EXPECT_THAT(entry.vm_flags.value(), Not(Contains("ex"))); - // Because the mapped file was opened O_RDONLY, the VMA is !VM_MAYWRITE and - // also !VM_SHARED. - EXPECT_THAT(entry.vm_flags.value(), Not(Contains("sh"))); - EXPECT_THAT(entry.vm_flags.value(), Not(Contains("mw"))); - } -} - -// Tests that gVisor's /proc/[pid]/smaps provides all of the fields we expect it -// to, which as of this writing is all fields provided by Linux 4.4. -TEST(ProcPidSmapsTest, GvisorFields) { - SKIP_IF(!IsRunningOnGvisor()); - auto const entries = ASSERT_NO_ERRNO_AND_VALUE(ReadProcSelfSmaps()); - for (auto const& entry : entries) { - EXPECT_TRUE(entry.pss_kb); - EXPECT_TRUE(entry.referenced_kb); - EXPECT_TRUE(entry.anonymous_kb); - EXPECT_TRUE(entry.anon_huge_pages_kb); - EXPECT_TRUE(entry.shared_hugetlb_kb); - EXPECT_TRUE(entry.private_hugetlb_kb); - EXPECT_TRUE(entry.swap_kb); - EXPECT_TRUE(entry.swap_pss_kb); - EXPECT_THAT(entry.kernel_page_size_kb, Optional(kPageSize / 1024)); - EXPECT_THAT(entry.mmu_page_size_kb, Optional(kPageSize / 1024)); - EXPECT_TRUE(entry.locked_kb); - EXPECT_TRUE(entry.vm_flags); - } -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/proc_pid_uid_gid_map.cc b/test/syscalls/linux/proc_pid_uid_gid_map.cc deleted file mode 100644 index 748f7be58..000000000 --- a/test/syscalls/linux/proc_pid_uid_gid_map.cc +++ /dev/null @@ -1,311 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <fcntl.h> -#include <sched.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <unistd.h> - -#include <functional> -#include <string> -#include <tuple> -#include <utility> -#include <vector> - -#include "gtest/gtest.h" -#include "absl/strings/ascii.h" -#include "absl/strings/str_cat.h" -#include "absl/strings/str_split.h" -#include "test/util/capability_util.h" -#include "test/util/cleanup.h" -#include "test/util/file_descriptor.h" -#include "test/util/fs_util.h" -#include "test/util/logging.h" -#include "test/util/multiprocess_util.h" -#include "test/util/posix_error.h" -#include "test/util/save_util.h" -#include "test/util/test_util.h" -#include "test/util/time_util.h" - -namespace gvisor { -namespace testing { - -PosixErrorOr<int> InNewUserNamespace(const std::function<void()>& fn) { - return InForkedProcess([&] { - TEST_PCHECK(unshare(CLONE_NEWUSER) == 0); - MaybeSave(); - fn(); - }); -} - -PosixErrorOr<std::tuple<pid_t, Cleanup>> CreateProcessInNewUserNamespace() { - int pipefd[2]; - if (pipe(pipefd) < 0) { - return PosixError(errno, "pipe failed"); - } - const auto cleanup_pipe_read = - Cleanup([&] { EXPECT_THAT(close(pipefd[0]), SyscallSucceeds()); }); - auto cleanup_pipe_write = - Cleanup([&] { EXPECT_THAT(close(pipefd[1]), SyscallSucceeds()); }); - pid_t child_pid = fork(); - if (child_pid < 0) { - return PosixError(errno, "fork failed"); - } - if (child_pid == 0) { - // Close our copy of the pipe's read end, which doesn't really matter. - TEST_PCHECK(close(pipefd[0]) >= 0); - TEST_PCHECK(unshare(CLONE_NEWUSER) == 0); - MaybeSave(); - // Indicate that we've switched namespaces by unblocking the parent's read. - TEST_PCHECK(close(pipefd[1]) >= 0); - while (true) { - SleepSafe(absl::Minutes(1)); - } - } - auto cleanup_child = Cleanup([child_pid] { - EXPECT_THAT(kill(child_pid, SIGKILL), SyscallSucceeds()); - int status; - ASSERT_THAT(RetryEINTR(waitpid)(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFSIGNALED(status) && WTERMSIG(status) == SIGKILL) - << "status = " << status; - }); - // Close our copy of the pipe's write end, then wait for the child to close - // its copy, indicating that it's switched namespaces. - cleanup_pipe_write.Release()(); - char buf; - if (RetryEINTR(read)(pipefd[0], &buf, 1) < 0) { - return PosixError(errno, "reading from pipe failed"); - } - MaybeSave(); - return std::make_tuple(child_pid, std::move(cleanup_child)); -} - -// TEST_CHECK-fails on error, since this function is used in contexts that -// require async-signal-safety. -void DenySetgroupsByPath(const char* path) { - int fd = open(path, O_WRONLY); - if (fd < 0 && errno == ENOENT) { - // On kernels where this file doesn't exist, writing "deny" to it isn't - // necessary to write to gid_map. - return; - } - TEST_PCHECK(fd >= 0); - MaybeSave(); - char deny[] = "deny"; - TEST_PCHECK(write(fd, deny, sizeof(deny)) == sizeof(deny)); - MaybeSave(); - TEST_PCHECK(close(fd) == 0); -} - -void DenySelfSetgroups() { DenySetgroupsByPath("/proc/self/setgroups"); } - -void DenyPidSetgroups(pid_t pid) { - DenySetgroupsByPath(absl::StrCat("/proc/", pid, "/setgroups").c_str()); -} - -// Returns a valid UID/GID that isn't id. -uint32_t another_id(uint32_t id) { return (id + 1) % 65535; } - -struct TestParam { - std::string desc; - int cap; - std::function<std::string(absl::string_view)> get_map_filename; - std::function<uint32_t()> get_current_id; -}; - -std::string DescribeTestParam(const ::testing::TestParamInfo<TestParam>& info) { - return info.param.desc; -} - -std::vector<TestParam> UidGidMapTestParams() { - return {TestParam{"UID", CAP_SETUID, - [](absl::string_view pid) { - return absl::StrCat("/proc/", pid, "/uid_map"); - }, - []() -> uint32_t { return getuid(); }}, - TestParam{"GID", CAP_SETGID, - [](absl::string_view pid) { - return absl::StrCat("/proc/", pid, "/gid_map"); - }, - []() -> uint32_t { return getgid(); }}}; -} - -class ProcUidGidMapTest : public ::testing::TestWithParam<TestParam> { - protected: - uint32_t CurrentID() { return GetParam().get_current_id(); } -}; - -class ProcSelfUidGidMapTest : public ProcUidGidMapTest { - protected: - PosixErrorOr<int> InNewUserNamespaceWithMapFD( - const std::function<void(int)>& fn) { - std::string map_filename = GetParam().get_map_filename("self"); - return InNewUserNamespace([&] { - int fd = open(map_filename.c_str(), O_RDWR); - TEST_PCHECK(fd >= 0); - MaybeSave(); - fn(fd); - TEST_PCHECK(close(fd) == 0); - }); - } -}; - -class ProcPidUidGidMapTest : public ProcUidGidMapTest { - protected: - PosixErrorOr<bool> HaveSetIDCapability() { - return HaveCapability(GetParam().cap); - } - - // Returns true if the caller is running in a user namespace with all IDs - // mapped. This matters for tests that expect to successfully map arbitrary - // IDs into a child user namespace, since even with CAP_SET*ID this is only - // possible if those IDs are mapped into the current one. - PosixErrorOr<bool> AllIDsMapped() { - ASSIGN_OR_RETURN_ERRNO(std::string id_map, - GetContents(GetParam().get_map_filename("self"))); - absl::StripTrailingAsciiWhitespace(&id_map); - std::vector<std::string> id_map_parts = - absl::StrSplit(id_map, ' ', absl::SkipEmpty()); - return id_map_parts == std::vector<std::string>({"0", "0", "4294967295"}); - } - - PosixErrorOr<FileDescriptor> OpenMapFile(pid_t pid) { - return Open(GetParam().get_map_filename(absl::StrCat(pid)), O_RDWR); - } -}; - -TEST_P(ProcSelfUidGidMapTest, IsInitiallyEmpty) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(CanCreateUserNamespace())); - EXPECT_THAT(InNewUserNamespaceWithMapFD([](int fd) { - char buf[64]; - TEST_PCHECK(read(fd, buf, sizeof(buf)) == 0); - }), - IsPosixErrorOkAndHolds(0)); -} - -TEST_P(ProcSelfUidGidMapTest, IdentityMapOwnID) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(CanCreateUserNamespace())); - uint32_t id = CurrentID(); - std::string line = absl::StrCat(id, " ", id, " 1"); - EXPECT_THAT( - InNewUserNamespaceWithMapFD([&](int fd) { - DenySelfSetgroups(); - TEST_PCHECK(write(fd, line.c_str(), line.size()) == line.size()); - }), - IsPosixErrorOkAndHolds(0)); -} - -TEST_P(ProcSelfUidGidMapTest, TrailingNewlineAndNULIgnored) { - // This is identical to IdentityMapOwnID, except that a trailing newline, NUL, - // and an invalid (incomplete) map entry are appended to the valid entry. The - // newline should be accepted, and everything after the NUL should be ignored. - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(CanCreateUserNamespace())); - uint32_t id = CurrentID(); - std::string line = absl::StrCat(id, " ", id, " 1\n\0 4 3"); - EXPECT_THAT( - InNewUserNamespaceWithMapFD([&](int fd) { - DenySelfSetgroups(); - // The write should return the full size of the write, even though - // characters after the NUL were ignored. - TEST_PCHECK(write(fd, line.c_str(), line.size()) == line.size()); - }), - IsPosixErrorOkAndHolds(0)); -} - -TEST_P(ProcSelfUidGidMapTest, NonIdentityMapOwnID) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(CanCreateUserNamespace())); - uint32_t id = CurrentID(); - uint32_t id2 = another_id(id); - std::string line = absl::StrCat(id2, " ", id, " 1"); - EXPECT_THAT( - InNewUserNamespaceWithMapFD([&](int fd) { - DenySelfSetgroups(); - TEST_PCHECK(write(fd, line.c_str(), line.size()) == line.size()); - }), - IsPosixErrorOkAndHolds(0)); -} - -TEST_P(ProcSelfUidGidMapTest, MapOtherID) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(CanCreateUserNamespace())); - // Whether or not we have CAP_SET*ID is irrelevant: the process running in the - // new (child) user namespace won't have any capabilities in the current - // (parent) user namespace, which is needed. - uint32_t id = CurrentID(); - uint32_t id2 = another_id(id); - std::string line = absl::StrCat(id, " ", id2, " 1"); - EXPECT_THAT(InNewUserNamespaceWithMapFD([&](int fd) { - DenySelfSetgroups(); - TEST_PCHECK(write(fd, line.c_str(), line.size()) < 0); - TEST_CHECK(errno == EPERM); - }), - IsPosixErrorOkAndHolds(0)); -} - -INSTANTIATE_TEST_SUITE_P(All, ProcSelfUidGidMapTest, - ::testing::ValuesIn(UidGidMapTestParams()), - DescribeTestParam); - -TEST_P(ProcPidUidGidMapTest, MapOtherIDPrivileged) { - // Like ProcSelfUidGidMapTest_MapOtherID, but since we have CAP_SET*ID in the - // parent user namespace (this one), we can map IDs that aren't ours. - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(CanCreateUserNamespace())); - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveSetIDCapability())); - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(AllIDsMapped())); - - pid_t child_pid; - Cleanup cleanup_child; - std::tie(child_pid, cleanup_child) = - ASSERT_NO_ERRNO_AND_VALUE(CreateProcessInNewUserNamespace()); - - uint32_t id = CurrentID(); - uint32_t id2 = another_id(id); - std::string line = absl::StrCat(id, " ", id2, " 1"); - DenyPidSetgroups(child_pid); - auto fd = ASSERT_NO_ERRNO_AND_VALUE(OpenMapFile(child_pid)); - EXPECT_THAT(write(fd.get(), line.c_str(), line.size()), - SyscallSucceedsWithValue(line.size())); -} - -TEST_P(ProcPidUidGidMapTest, MapAnyIDsPrivileged) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(CanCreateUserNamespace())); - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveSetIDCapability())); - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(AllIDsMapped())); - - pid_t child_pid; - Cleanup cleanup_child; - std::tie(child_pid, cleanup_child) = - ASSERT_NO_ERRNO_AND_VALUE(CreateProcessInNewUserNamespace()); - - // Test all of: - // - // - Mapping ranges of length > 1 - // - // - Mapping multiple ranges - // - // - Non-identity mappings - char entries[] = "2 0 2\n4 6 2"; - DenyPidSetgroups(child_pid); - auto fd = ASSERT_NO_ERRNO_AND_VALUE(OpenMapFile(child_pid)); - EXPECT_THAT(write(fd.get(), entries, sizeof(entries)), - SyscallSucceedsWithValue(sizeof(entries))); -} - -INSTANTIATE_TEST_SUITE_P(All, ProcPidUidGidMapTest, - ::testing::ValuesIn(UidGidMapTestParams()), - DescribeTestParam); - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/pselect.cc b/test/syscalls/linux/pselect.cc deleted file mode 100644 index 4e43c4d7f..000000000 --- a/test/syscalls/linux/pselect.cc +++ /dev/null @@ -1,190 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <signal.h> -#include <sys/select.h> - -#include "gtest/gtest.h" -#include "absl/time/time.h" -#include "test/syscalls/linux/base_poll_test.h" -#include "test/util/signal_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -struct MaskWithSize { - sigset_t* mask; - size_t mask_size; -}; - -// Linux and glibc have a different idea of the sizeof sigset_t. When calling -// the syscall directly, use what the kernel expects. -unsigned kSigsetSize = SIGRTMAX / 8; - -// Linux pselect(2) differs from the glibc wrapper function in that Linux -// updates the timeout with the amount of time remaining. In order to test this -// behavior we need to use the syscall directly. -int syscallPselect6(int nfds, fd_set* readfds, fd_set* writefds, - fd_set* exceptfds, struct timespec* timeout, - const MaskWithSize* mask_with_size) { - return syscall(SYS_pselect6, nfds, readfds, writefds, exceptfds, timeout, - mask_with_size); -} - -class PselectTest : public BasePollTest { - protected: - void SetUp() override { BasePollTest::SetUp(); } - void TearDown() override { BasePollTest::TearDown(); } -}; - -// See that when there are no FD sets, pselect behaves like sleep. -TEST_F(PselectTest, NullFds) { - struct timespec timeout = absl::ToTimespec(absl::Milliseconds(10)); - ASSERT_THAT(syscallPselect6(0, nullptr, nullptr, nullptr, &timeout, nullptr), - SyscallSucceeds()); - EXPECT_EQ(timeout.tv_sec, 0); - EXPECT_EQ(timeout.tv_nsec, 0); - - timeout = absl::ToTimespec(absl::Milliseconds(10)); - ASSERT_THAT(syscallPselect6(1, nullptr, nullptr, nullptr, &timeout, nullptr), - SyscallSucceeds()); - EXPECT_EQ(timeout.tv_sec, 0); - EXPECT_EQ(timeout.tv_nsec, 0); -} - -TEST_F(PselectTest, ClosedFds) { - fd_set read_set; - FD_ZERO(&read_set); - int fd; - ASSERT_THAT(fd = dup(1), SyscallSucceeds()); - ASSERT_THAT(close(fd), SyscallSucceeds()); - FD_SET(fd, &read_set); - struct timespec timeout = absl::ToTimespec(absl::Milliseconds(10)); - EXPECT_THAT( - syscallPselect6(fd + 1, &read_set, nullptr, nullptr, &timeout, nullptr), - SyscallFailsWithErrno(EBADF)); -} - -TEST_F(PselectTest, ZeroTimeout) { - struct timespec timeout = {}; - ASSERT_THAT(syscallPselect6(1, nullptr, nullptr, nullptr, &timeout, nullptr), - SyscallSucceeds()); - EXPECT_EQ(timeout.tv_sec, 0); - EXPECT_EQ(timeout.tv_nsec, 0); -} - -// If random S/R interrupts the pselect, SIGALRM may be delivered before pselect -// restarts, causing the pselect to hang forever. -TEST_F(PselectTest, NoTimeout_NoRandomSave) { - // When there's no timeout, pselect may never return so set a timer. - SetTimer(absl::Milliseconds(100)); - // See that we get interrupted by the timer. - ASSERT_THAT(syscallPselect6(1, nullptr, nullptr, nullptr, nullptr, nullptr), - SyscallFailsWithErrno(EINTR)); - EXPECT_TRUE(TimerFired()); -} - -TEST_F(PselectTest, InvalidTimeoutNegative) { - struct timespec timeout = absl::ToTimespec(absl::Seconds(-1)); - ASSERT_THAT(syscallPselect6(1, nullptr, nullptr, nullptr, &timeout, nullptr), - SyscallFailsWithErrno(EINVAL)); - EXPECT_EQ(timeout.tv_sec, -1); - EXPECT_EQ(timeout.tv_nsec, 0); -} - -TEST_F(PselectTest, InvalidTimeoutNotNormalized) { - struct timespec timeout = {0, 1000000001}; - ASSERT_THAT(syscallPselect6(1, nullptr, nullptr, nullptr, &timeout, nullptr), - SyscallFailsWithErrno(EINVAL)); - EXPECT_EQ(timeout.tv_sec, 0); - EXPECT_EQ(timeout.tv_nsec, 1000000001); -} - -TEST_F(PselectTest, EmptySigMaskInvalidMaskSize) { - struct timespec timeout = {}; - MaskWithSize invalid = {nullptr, 7}; - EXPECT_THAT(syscallPselect6(0, nullptr, nullptr, nullptr, &timeout, &invalid), - SyscallSucceeds()); -} - -TEST_F(PselectTest, EmptySigMaskValidMaskSize) { - struct timespec timeout = {}; - MaskWithSize invalid = {nullptr, 8}; - EXPECT_THAT(syscallPselect6(0, nullptr, nullptr, nullptr, &timeout, &invalid), - SyscallSucceeds()); -} - -TEST_F(PselectTest, InvalidMaskSize) { - struct timespec timeout = {}; - sigset_t sigmask; - ASSERT_THAT(sigemptyset(&sigmask), SyscallSucceeds()); - MaskWithSize invalid = {&sigmask, 7}; - EXPECT_THAT(syscallPselect6(1, nullptr, nullptr, nullptr, &timeout, &invalid), - SyscallFailsWithErrno(EINVAL)); -} - -// Verify that signals blocked by the pselect mask (that would otherwise be -// allowed) do not interrupt pselect. -TEST_F(PselectTest, SignalMaskBlocksSignal) { - absl::Duration duration(absl::Seconds(30)); - struct timespec timeout = absl::ToTimespec(duration); - absl::Duration timer_duration(absl::Seconds(10)); - - // Call with a mask that blocks SIGALRM. See that pselect is not interrupted - // (i.e. returns 0) and that upon completion, the timer has fired. - sigset_t mask; - ASSERT_THAT(sigprocmask(0, nullptr, &mask), SyscallSucceeds()); - ASSERT_THAT(sigaddset(&mask, SIGALRM), SyscallSucceeds()); - MaskWithSize mask_with_size = {&mask, kSigsetSize}; - SetTimer(timer_duration); - MaybeSave(); - ASSERT_FALSE(TimerFired()); - ASSERT_THAT( - syscallPselect6(1, nullptr, nullptr, nullptr, &timeout, &mask_with_size), - SyscallSucceeds()); - EXPECT_TRUE(TimerFired()); - EXPECT_EQ(absl::DurationFromTimespec(timeout), absl::Duration()); -} - -// Verify that signals allowed by the pselect mask (that would otherwise be -// blocked) interrupt pselect. -TEST_F(PselectTest, SignalMaskAllowsSignal) { - absl::Duration duration = absl::Seconds(30); - struct timespec timeout = absl::ToTimespec(duration); - absl::Duration timer_duration = absl::Seconds(10); - - sigset_t mask; - ASSERT_THAT(sigprocmask(0, nullptr, &mask), SyscallSucceeds()); - - // Block SIGALRM. - auto cleanup = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_BLOCK, SIGALRM)); - - // Call with a mask that unblocks SIGALRM. See that pselect is interrupted. - MaskWithSize mask_with_size = {&mask, kSigsetSize}; - SetTimer(timer_duration); - MaybeSave(); - ASSERT_FALSE(TimerFired()); - ASSERT_THAT( - syscallPselect6(1, nullptr, nullptr, nullptr, &timeout, &mask_with_size), - SyscallFailsWithErrno(EINTR)); - EXPECT_TRUE(TimerFired()); - EXPECT_GT(absl::DurationFromTimespec(timeout), absl::Duration()); -} - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/ptrace.cc b/test/syscalls/linux/ptrace.cc deleted file mode 100644 index 4dd5cf27b..000000000 --- a/test/syscalls/linux/ptrace.cc +++ /dev/null @@ -1,1212 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <elf.h> -#include <signal.h> -#include <stddef.h> -#include <sys/ptrace.h> -#include <sys/time.h> -#include <sys/types.h> -#include <sys/user.h> -#include <sys/wait.h> -#include <unistd.h> - -#include <iostream> -#include <utility> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "absl/flags/flag.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/util/logging.h" -#include "test/util/multiprocess_util.h" -#include "test/util/platform_util.h" -#include "test/util/signal_util.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" -#include "test/util/time_util.h" - -ABSL_FLAG(bool, ptrace_test_execve_child, false, - "If true, run the " - "PtraceExecveTest_Execve_GetRegs_PeekUser_SIGKILL_TraceClone_" - "TraceExit child workload."); - -namespace gvisor { -namespace testing { - -namespace { - -// PTRACE_GETSIGMASK and PTRACE_SETSIGMASK are not defined until glibc 2.23 -// (fb53a27c5741 "Add new header definitions from Linux 4.4 (plus older ptrace -// definitions)"). -constexpr auto kPtraceGetSigMask = static_cast<__ptrace_request>(0x420a); -constexpr auto kPtraceSetSigMask = static_cast<__ptrace_request>(0x420b); - -// PTRACE_SYSEMU is not defined until glibc 2.27 (c48831d0eebf "linux/x86: sync -// sys/ptrace.h with Linux 4.14 [BZ #22433]"). -constexpr auto kPtraceSysemu = static_cast<__ptrace_request>(31); - -// PTRACE_EVENT_STOP is not defined until glibc 2.26 (3f67d1a7021e "Add Linux -// PTRACE_EVENT_STOP"). -constexpr int kPtraceEventStop = 128; - -// Sends sig to the current process with tgkill(2). -// -// glibc's raise(2) may change the signal mask before sending the signal. These -// extra syscalls make tests of syscall, signal interception, etc. difficult to -// write. -void RaiseSignal(int sig) { - pid_t pid = getpid(); - TEST_PCHECK(pid > 0); - pid_t tid = gettid(); - TEST_PCHECK(tid > 0); - TEST_PCHECK(tgkill(pid, tid, sig) == 0); -} - -// Returns the Yama ptrace scope. -PosixErrorOr<int> YamaPtraceScope() { - constexpr char kYamaPtraceScopePath[] = "/proc/sys/kernel/yama/ptrace_scope"; - - ASSIGN_OR_RETURN_ERRNO(bool exists, Exists(kYamaPtraceScopePath)); - if (!exists) { - // File doesn't exist means no Yama, so the scope is disabled -> 0. - return 0; - } - - std::string contents; - RETURN_IF_ERRNO(GetContents(kYamaPtraceScopePath, &contents)); - - int scope; - if (!absl::SimpleAtoi(contents, &scope)) { - return PosixError(EINVAL, absl::StrCat(contents, ": not a valid number")); - } - - return scope; -} - -TEST(PtraceTest, AttachSelf) { - EXPECT_THAT(ptrace(PTRACE_ATTACH, gettid(), 0, 0), - SyscallFailsWithErrno(EPERM)); -} - -TEST(PtraceTest, AttachSameThreadGroup) { - pid_t const tid = gettid(); - ScopedThread([&] { - EXPECT_THAT(ptrace(PTRACE_ATTACH, tid, 0, 0), SyscallFailsWithErrno(EPERM)); - }); -} - -TEST(PtraceTest, AttachParent_PeekData_PokeData_SignalSuppression) { - // Yama prevents attaching to a parent. Skip the test if the scope is anything - // except disabled. - SKIP_IF(ASSERT_NO_ERRNO_AND_VALUE(YamaPtraceScope()) > 0); - - constexpr long kBeforePokeDataValue = 10; - constexpr long kAfterPokeDataValue = 20; - - volatile long word = kBeforePokeDataValue; - - pid_t const child_pid = fork(); - if (child_pid == 0) { - // In child process. - - // Attach to the parent. - pid_t const parent_pid = getppid(); - TEST_PCHECK(ptrace(PTRACE_ATTACH, parent_pid, 0, 0) == 0); - MaybeSave(); - - // Block until the parent enters signal-delivery-stop as a result of the - // SIGSTOP sent by PTRACE_ATTACH. - int status; - TEST_PCHECK(waitpid(parent_pid, &status, 0) == parent_pid); - MaybeSave(); - TEST_CHECK(WIFSTOPPED(status) && WSTOPSIG(status) == SIGSTOP); - - // Replace the value of word in the parent process with kAfterPokeDataValue. - long const parent_word = ptrace(PTRACE_PEEKDATA, parent_pid, &word, 0); - MaybeSave(); - TEST_CHECK(parent_word == kBeforePokeDataValue); - TEST_PCHECK( - ptrace(PTRACE_POKEDATA, parent_pid, &word, kAfterPokeDataValue) == 0); - MaybeSave(); - - // Detach from the parent and suppress the SIGSTOP. If the SIGSTOP is not - // suppressed, the parent will hang in group-stop, causing the test to time - // out. - TEST_PCHECK(ptrace(PTRACE_DETACH, parent_pid, 0, 0) == 0); - MaybeSave(); - _exit(0); - } - // In parent process. - ASSERT_THAT(child_pid, SyscallSucceeds()); - - // Wait for the child to complete. - int status; - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << " status " << status; - - // Check that the child's PTRACE_POKEDATA was effective. - EXPECT_EQ(kAfterPokeDataValue, word); -} - -TEST(PtraceTest, GetSigMask) { - // glibc and the Linux kernel define a sigset_t with different sizes. To avoid - // creating a kernel_sigset_t and recreating all the modification functions - // (sigemptyset, etc), we just hardcode the kernel sigset size. - constexpr int kSizeofKernelSigset = 8; - constexpr int kBlockSignal = SIGUSR1; - sigset_t blocked; - sigemptyset(&blocked); - sigaddset(&blocked, kBlockSignal); - - pid_t const child_pid = fork(); - if (child_pid == 0) { - // In child process. - - // Install a signal handler for kBlockSignal to avoid termination and block - // it. - TEST_PCHECK(signal( - kBlockSignal, +[](int signo) {}) != SIG_ERR); - MaybeSave(); - TEST_PCHECK(sigprocmask(SIG_SETMASK, &blocked, nullptr) == 0); - MaybeSave(); - - // Enable tracing. - TEST_PCHECK(ptrace(PTRACE_TRACEME, 0, 0, 0) == 0); - MaybeSave(); - - // This should be blocked. - RaiseSignal(kBlockSignal); - - // This should be suppressed by parent, who will change signal mask in the - // meantime, which means kBlockSignal should be delivered once this resumes. - RaiseSignal(SIGSTOP); - - _exit(0); - } - // In parent process. - ASSERT_THAT(child_pid, SyscallSucceeds()); - - // Wait for the child to send itself SIGSTOP and enter signal-delivery-stop. - int status; - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFSTOPPED(status) && WSTOPSIG(status) == SIGSTOP) - << " status " << status; - - // Get current signal mask. - sigset_t set; - EXPECT_THAT(ptrace(kPtraceGetSigMask, child_pid, kSizeofKernelSigset, &set), - SyscallSucceeds()); - EXPECT_THAT(blocked, EqualsSigset(set)); - - // Try to get current signal mask with bad size argument. - EXPECT_THAT(ptrace(kPtraceGetSigMask, child_pid, 0, nullptr), - SyscallFailsWithErrno(EINVAL)); - - // Try to set bad signal mask. - sigset_t* bad_addr = reinterpret_cast<sigset_t*>(-1); - EXPECT_THAT( - ptrace(kPtraceSetSigMask, child_pid, kSizeofKernelSigset, bad_addr), - SyscallFailsWithErrno(EFAULT)); - - // Set signal mask to empty set. - sigset_t set1; - sigemptyset(&set1); - EXPECT_THAT(ptrace(kPtraceSetSigMask, child_pid, kSizeofKernelSigset, &set1), - SyscallSucceeds()); - - // Suppress SIGSTOP and resume the child. It should re-enter - // signal-delivery-stop for kBlockSignal. - ASSERT_THAT(ptrace(PTRACE_CONT, child_pid, 0, 0), SyscallSucceeds()); - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFSTOPPED(status) && WSTOPSIG(status) == kBlockSignal) - << " status " << status; - - ASSERT_THAT(ptrace(PTRACE_CONT, child_pid, 0, 0), SyscallSucceeds()); - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - // Let's see that process exited normally. - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << " status " << status; -} - -TEST(PtraceTest, GetSiginfo_SetSiginfo_SignalInjection) { - constexpr int kOriginalSigno = SIGUSR1; - constexpr int kInjectedSigno = SIGUSR2; - - pid_t const child_pid = fork(); - if (child_pid == 0) { - // In child process. - - // Override all signal handlers. - struct sigaction sa = {}; - sa.sa_handler = +[](int signo) { _exit(signo); }; - TEST_PCHECK(sigfillset(&sa.sa_mask) == 0); - for (int signo = 1; signo < 32; signo++) { - if (signo == SIGKILL || signo == SIGSTOP) { - continue; - } - TEST_PCHECK(sigaction(signo, &sa, nullptr) == 0); - } - for (int signo = SIGRTMIN; signo <= SIGRTMAX; signo++) { - TEST_PCHECK(sigaction(signo, &sa, nullptr) == 0); - } - - // Unblock all signals. - TEST_PCHECK(sigprocmask(SIG_UNBLOCK, &sa.sa_mask, nullptr) == 0); - MaybeSave(); - - // Send ourselves kOriginalSignal while ptraced and exit with the signal we - // actually receive via the signal handler, if any, or 0 if we don't receive - // a signal. - TEST_PCHECK(ptrace(PTRACE_TRACEME, 0, 0, 0) == 0); - MaybeSave(); - RaiseSignal(kOriginalSigno); - _exit(0); - } - // In parent process. - ASSERT_THAT(child_pid, SyscallSucceeds()); - - // Wait for the child to send itself kOriginalSigno and enter - // signal-delivery-stop. - int status; - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFSTOPPED(status) && WSTOPSIG(status) == kOriginalSigno) - << " status " << status; - - siginfo_t siginfo = {}; - ASSERT_THAT(ptrace(PTRACE_GETSIGINFO, child_pid, 0, &siginfo), - SyscallSucceeds()); - EXPECT_EQ(kOriginalSigno, siginfo.si_signo); - EXPECT_EQ(SI_TKILL, siginfo.si_code); - - // Replace the signal with kInjectedSigno, and check that the child exits - // with kInjectedSigno, indicating that signal injection was successful. - siginfo.si_signo = kInjectedSigno; - ASSERT_THAT(ptrace(PTRACE_SETSIGINFO, child_pid, 0, &siginfo), - SyscallSucceeds()); - ASSERT_THAT(ptrace(PTRACE_DETACH, child_pid, 0, kInjectedSigno), - SyscallSucceeds()); - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == kInjectedSigno) - << " status " << status; -} - -TEST(PtraceTest, SIGKILLDoesNotCauseSignalDeliveryStop) { - pid_t const child_pid = fork(); - if (child_pid == 0) { - // In child process. - TEST_PCHECK(ptrace(PTRACE_TRACEME, 0, 0, 0) == 0); - MaybeSave(); - RaiseSignal(SIGKILL); - TEST_CHECK_MSG(false, "Survived SIGKILL?"); - _exit(1); - } - // In parent process. - ASSERT_THAT(child_pid, SyscallSucceeds()); - - // Expect the child to die to SIGKILL without entering signal-delivery-stop. - int status; - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFSIGNALED(status) && WTERMSIG(status) == SIGKILL) - << " status " << status; -} - -TEST(PtraceTest, PtraceKill) { - constexpr int kOriginalSigno = SIGUSR1; - - pid_t const child_pid = fork(); - if (child_pid == 0) { - // In child process. - TEST_PCHECK(ptrace(PTRACE_TRACEME, 0, 0, 0) == 0); - MaybeSave(); - - // PTRACE_KILL only works if tracee has entered signal-delivery-stop. - RaiseSignal(kOriginalSigno); - TEST_CHECK_MSG(false, "Failed to kill the process?"); - _exit(0); - } - // In parent process. - ASSERT_THAT(child_pid, SyscallSucceeds()); - - // Wait for the child to send itself kOriginalSigno and enter - // signal-delivery-stop. - int status; - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFSTOPPED(status) && WSTOPSIG(status) == kOriginalSigno) - << " status " << status; - - ASSERT_THAT(ptrace(PTRACE_KILL, child_pid, 0, 0), SyscallSucceeds()); - - // Expect the child to die with SIGKILL. - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFSIGNALED(status) && WTERMSIG(status) == SIGKILL) - << " status " << status; -} - -TEST(PtraceTest, GetRegSet) { - pid_t const child_pid = fork(); - if (child_pid == 0) { - // In child process. - - // Enable tracing. - TEST_PCHECK(ptrace(PTRACE_TRACEME, 0, 0, 0) == 0); - MaybeSave(); - - // Use kill explicitly because we check the syscall argument register below. - kill(getpid(), SIGSTOP); - - _exit(0); - } - // In parent process. - ASSERT_THAT(child_pid, SyscallSucceeds()); - - // Wait for the child to send itself SIGSTOP and enter signal-delivery-stop. - int status; - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFSTOPPED(status) && WSTOPSIG(status) == SIGSTOP) - << " status " << status; - - // Get the general registers. - struct user_regs_struct regs; - struct iovec iov; - iov.iov_base = ®s; - iov.iov_len = sizeof(regs); - EXPECT_THAT(ptrace(PTRACE_GETREGSET, child_pid, NT_PRSTATUS, &iov), - SyscallSucceeds()); - - // Read exactly the full register set. - EXPECT_EQ(iov.iov_len, sizeof(regs)); - -#ifdef __x86_64__ - // Child called kill(2), with SIGSTOP as arg 2. - EXPECT_EQ(regs.rsi, SIGSTOP); -#endif - - // Suppress SIGSTOP and resume the child. - ASSERT_THAT(ptrace(PTRACE_CONT, child_pid, 0, 0), SyscallSucceeds()); - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - // Let's see that process exited normally. - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << " status " << status; -} - -TEST(PtraceTest, AttachingConvertsGroupStopToPtraceStop) { - pid_t const child_pid = fork(); - if (child_pid == 0) { - // In child process. - while (true) { - pause(); - } - } - // In parent process. - ASSERT_THAT(child_pid, SyscallSucceeds()); - - // SIGSTOP the child and wait for it to stop. - ASSERT_THAT(kill(child_pid, SIGSTOP), SyscallSucceeds()); - int status; - ASSERT_THAT(waitpid(child_pid, &status, WUNTRACED), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFSTOPPED(status) && WSTOPSIG(status) == SIGSTOP) - << " status " << status; - - // Attach to the child and expect it to re-enter a traced group-stop despite - // already being stopped. - ASSERT_THAT(ptrace(PTRACE_ATTACH, child_pid, 0, 0), SyscallSucceeds()); - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFSTOPPED(status) && WSTOPSIG(status) == SIGSTOP) - << " status " << status; - - // Verify that the child is ptrace-stopped by checking that it can receive - // ptrace commands requiring a ptrace-stop. - EXPECT_THAT(ptrace(PTRACE_SETOPTIONS, child_pid, 0, 0), SyscallSucceeds()); - - // Group-stop is distinguished from signal-delivery-stop by PTRACE_GETSIGINFO - // failing with EINVAL. - siginfo_t siginfo = {}; - EXPECT_THAT(ptrace(PTRACE_GETSIGINFO, child_pid, 0, &siginfo), - SyscallFailsWithErrno(EINVAL)); - - // Detach from the child and expect it to stay stopped without a notification. - ASSERT_THAT(ptrace(PTRACE_DETACH, child_pid, 0, 0), SyscallSucceeds()); - ASSERT_THAT(waitpid(child_pid, &status, WUNTRACED | WNOHANG), - SyscallSucceedsWithValue(0)); - - // Sending it SIGCONT should cause it to leave its stop. - ASSERT_THAT(kill(child_pid, SIGCONT), SyscallSucceeds()); - ASSERT_THAT(waitpid(child_pid, &status, WCONTINUED), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFCONTINUED(status)) << " status " << status; - - // Clean up the child. - ASSERT_THAT(kill(child_pid, SIGKILL), SyscallSucceeds()); - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFSIGNALED(status) && WTERMSIG(status) == SIGKILL) - << " status " << status; -} - -// Fixture for tests parameterized by whether or not to use PTRACE_O_TRACEEXEC. -class PtraceExecveTest : public ::testing::TestWithParam<bool> { - protected: - bool TraceExec() const { return GetParam(); } -}; - -TEST_P(PtraceExecveTest, Execve_GetRegs_PeekUser_SIGKILL_TraceClone_TraceExit) { - ExecveArray const owned_child_argv = {"/proc/self/exe", - "--ptrace_test_execve_child"}; - char* const* const child_argv = owned_child_argv.get(); - - pid_t const child_pid = fork(); - if (child_pid == 0) { - // In child process. The test relies on calling execve() in a non-leader - // thread; pthread_create() isn't async-signal-safe, so the safest way to - // do this is to execve() first, then enable tracing and run the expected - // child process behavior in the new subprocess. - execve(child_argv[0], child_argv, /* envp = */ nullptr); - TEST_PCHECK_MSG(false, "Survived execve to test child"); - } - // In parent process. - ASSERT_THAT(child_pid, SyscallSucceeds()); - - // Wait for the child to send itself SIGSTOP and enter signal-delivery-stop. - int status; - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFSTOPPED(status) && WSTOPSIG(status) == SIGSTOP) - << " status " << status; - - // Enable PTRACE_O_TRACECLONE so we can get the ID of the child's non-leader - // thread, PTRACE_O_TRACEEXIT so we can observe the leader's death, and - // PTRACE_O_TRACEEXEC if required by the test. (The leader doesn't call - // execve, but options should be inherited across clone.) - long opts = PTRACE_O_TRACECLONE | PTRACE_O_TRACEEXIT; - if (TraceExec()) { - opts |= PTRACE_O_TRACEEXEC; - } - ASSERT_THAT(ptrace(PTRACE_SETOPTIONS, child_pid, 0, opts), SyscallSucceeds()); - - // Suppress the SIGSTOP and wait for the child's leader thread to report - // PTRACE_EVENT_CLONE. Get the new thread's ID from the event. - ASSERT_THAT(ptrace(PTRACE_CONT, child_pid, 0, 0), SyscallSucceeds()); - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_EQ(SIGTRAP | (PTRACE_EVENT_CLONE << 8), status >> 8); - unsigned long eventmsg; - ASSERT_THAT(ptrace(PTRACE_GETEVENTMSG, child_pid, 0, &eventmsg), - SyscallSucceeds()); - pid_t const nonleader_tid = eventmsg; - pid_t const leader_tid = child_pid; - - // The new thread should be ptraced and in signal-delivery-stop by SIGSTOP due - // to PTRACE_O_TRACECLONE. - // - // Before bf959931ddb88c4e4366e96dd22e68fa0db9527c "wait/ptrace: assume __WALL - // if the child is traced" (4.7) , waiting on it requires __WCLONE since, as a - // non-leader, its termination signal is 0. After, a standard wait is - // sufficient. - ASSERT_THAT(waitpid(nonleader_tid, &status, __WCLONE), - SyscallSucceedsWithValue(nonleader_tid)); - EXPECT_TRUE(WIFSTOPPED(status) && WSTOPSIG(status) == SIGSTOP) - << " status " << status; - - // Resume both child threads. - for (pid_t const tid : {leader_tid, nonleader_tid}) { - ASSERT_THAT(ptrace(PTRACE_CONT, tid, 0, 0), SyscallSucceeds()); - } - - // The non-leader child thread should call execve, causing the leader thread - // to enter PTRACE_EVENT_EXIT with an apparent exit code of 0. At this point, - // the leader has not yet exited, so the non-leader should be blocked in - // execve. - ASSERT_THAT(waitpid(leader_tid, &status, 0), - SyscallSucceedsWithValue(leader_tid)); - EXPECT_EQ(SIGTRAP | (PTRACE_EVENT_EXIT << 8), status >> 8); - ASSERT_THAT(ptrace(PTRACE_GETEVENTMSG, leader_tid, 0, &eventmsg), - SyscallSucceeds()); - EXPECT_TRUE(WIFEXITED(eventmsg) && WEXITSTATUS(eventmsg) == 0) - << " eventmsg " << eventmsg; - EXPECT_THAT(waitpid(nonleader_tid, &status, __WCLONE | WNOHANG), - SyscallSucceedsWithValue(0)); - - // Allow the leader to continue exiting. This should allow the non-leader to - // complete its execve, causing the original leader to be reaped without - // further notice and the non-leader to steal its ID. - ASSERT_THAT(ptrace(PTRACE_CONT, leader_tid, 0, 0), SyscallSucceeds()); - ASSERT_THAT(waitpid(leader_tid, &status, 0), - SyscallSucceedsWithValue(leader_tid)); - if (TraceExec()) { - // If PTRACE_O_TRACEEXEC was enabled, the execing thread should be in - // PTRACE_EVENT_EXEC-stop, with the event message set to its old thread ID. - EXPECT_EQ(SIGTRAP | (PTRACE_EVENT_EXEC << 8), status >> 8); - ASSERT_THAT(ptrace(PTRACE_GETEVENTMSG, leader_tid, 0, &eventmsg), - SyscallSucceeds()); - EXPECT_EQ(nonleader_tid, eventmsg); - } else { - // Otherwise, the execing thread should have received SIGTRAP and should now - // be in signal-delivery-stop. - EXPECT_TRUE(WIFSTOPPED(status) && WSTOPSIG(status) == SIGTRAP) - << " status " << status; - } - -#ifdef __x86_64__ - { - // CS should be 0x33, indicating an 64-bit binary. - constexpr uint64_t kAMD64UserCS = 0x33; - EXPECT_THAT(ptrace(PTRACE_PEEKUSER, leader_tid, - offsetof(struct user_regs_struct, cs), 0), - SyscallSucceedsWithValue(kAMD64UserCS)); - struct user_regs_struct regs = {}; - ASSERT_THAT(ptrace(PTRACE_GETREGS, leader_tid, 0, ®s), - SyscallSucceeds()); - EXPECT_EQ(kAMD64UserCS, regs.cs); - } -#endif // defined(__x86_64__) - - // PTRACE_O_TRACEEXIT should have been inherited across execve. Send SIGKILL, - // which should end the PTRACE_EVENT_EXEC-stop or signal-delivery-stop and - // leave the child in PTRACE_EVENT_EXIT-stop. - ASSERT_THAT(kill(leader_tid, SIGKILL), SyscallSucceeds()); - ASSERT_THAT(waitpid(leader_tid, &status, 0), - SyscallSucceedsWithValue(leader_tid)); - EXPECT_EQ(SIGTRAP | (PTRACE_EVENT_EXIT << 8), status >> 8); - ASSERT_THAT(ptrace(PTRACE_GETEVENTMSG, leader_tid, 0, &eventmsg), - SyscallSucceeds()); - EXPECT_TRUE(WIFSIGNALED(eventmsg) && WTERMSIG(eventmsg) == SIGKILL) - << " eventmsg " << eventmsg; - - // End the PTRACE_EVENT_EXIT stop, allowing the child to exit. - ASSERT_THAT(ptrace(PTRACE_CONT, leader_tid, 0, 0), SyscallSucceeds()); - ASSERT_THAT(waitpid(leader_tid, &status, 0), - SyscallSucceedsWithValue(leader_tid)); - EXPECT_TRUE(WIFSIGNALED(status) && WTERMSIG(status) == SIGKILL) - << " status " << status; -} - -[[noreturn]] void RunExecveChild() { - // Enable tracing, then raise SIGSTOP and expect our parent to suppress it. - TEST_PCHECK(ptrace(PTRACE_TRACEME, 0, 0, 0) == 0); - MaybeSave(); - RaiseSignal(SIGSTOP); - MaybeSave(); - - // Call execve() in a non-leader thread. As long as execve() succeeds, what - // exactly we execve() shouldn't really matter, since the tracer should kill - // us after execve() completes. - ScopedThread t([&] { - ExecveArray const owned_child_argv = {"/proc/self/exe", - "--this_flag_shouldnt_exist"}; - char* const* const child_argv = owned_child_argv.get(); - execve(child_argv[0], child_argv, /* envp = */ nullptr); - TEST_PCHECK_MSG(false, "Survived execve? (thread)"); - }); - t.Join(); - TEST_CHECK_MSG(false, "Survived execve? (main)"); - _exit(1); -} - -INSTANTIATE_TEST_SUITE_P(TraceExec, PtraceExecveTest, ::testing::Bool()); - -// This test has expectations on when syscall-enter/exit-stops occur that are -// violated if saving occurs, since saving interrupts all syscalls, causing -// premature syscall-exit. -TEST(PtraceTest, - ExitWhenParentIsNotTracer_Syscall_TraceVfork_TraceVforkDone_NoRandomSave) { - constexpr int kExitTraceeExitCode = 99; - - pid_t const child_pid = fork(); - if (child_pid == 0) { - // In child process. - - // Block SIGCHLD so it doesn't interrupt wait4. - sigset_t mask; - TEST_PCHECK(sigemptyset(&mask) == 0); - TEST_PCHECK(sigaddset(&mask, SIGCHLD) == 0); - TEST_PCHECK(sigprocmask(SIG_SETMASK, &mask, nullptr) == 0); - MaybeSave(); - - // Enable tracing, then raise SIGSTOP and expect our parent to suppress it. - TEST_PCHECK(ptrace(PTRACE_TRACEME, 0, 0, 0) == 0); - MaybeSave(); - RaiseSignal(SIGSTOP); - MaybeSave(); - - // Spawn a vfork child that exits immediately, and reap it. Don't save - // after vfork since the parent expects to see wait4 as the next syscall. - pid_t const pid = vfork(); - if (pid == 0) { - _exit(kExitTraceeExitCode); - } - TEST_PCHECK_MSG(pid > 0, "vfork failed"); - - int status; - TEST_PCHECK(wait4(pid, &status, 0, nullptr) > 0); - MaybeSave(); - TEST_CHECK(WIFEXITED(status) && WEXITSTATUS(status) == kExitTraceeExitCode); - _exit(0); - } - // In parent process. - ASSERT_THAT(child_pid, SyscallSucceeds()); - - // Wait for the child to send itself SIGSTOP and enter signal-delivery-stop. - int status; - ASSERT_THAT(child_pid, SyscallSucceeds()); - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFSTOPPED(status) && WSTOPSIG(status) == SIGSTOP) - << " status " << status; - - // Enable PTRACE_O_TRACEVFORK so we can get the ID of the grandchild, - // PTRACE_O_TRACEVFORKDONE so we can observe PTRACE_EVENT_VFORK_DONE, and - // PTRACE_O_TRACESYSGOOD so syscall-enter/exit-stops are unambiguously - // indicated by a stop signal of SIGTRAP|0x80 rather than just SIGTRAP. - ASSERT_THAT(ptrace(PTRACE_SETOPTIONS, child_pid, 0, - PTRACE_O_TRACEVFORK | PTRACE_O_TRACEVFORKDONE | - PTRACE_O_TRACESYSGOOD), - SyscallSucceeds()); - - // Suppress the SIGSTOP and wait for the child to report PTRACE_EVENT_VFORK. - // Get the new process' ID from the event. - ASSERT_THAT(ptrace(PTRACE_CONT, child_pid, 0, 0), SyscallSucceeds()); - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_EQ(SIGTRAP | (PTRACE_EVENT_VFORK << 8), status >> 8); - unsigned long eventmsg; - ASSERT_THAT(ptrace(PTRACE_GETEVENTMSG, child_pid, 0, &eventmsg), - SyscallSucceeds()); - pid_t const grandchild_pid = eventmsg; - - // The grandchild should be traced by us and in signal-delivery-stop by - // SIGSTOP due to PTRACE_O_TRACEVFORK. This allows us to wait on it even - // though we're not its parent. - ASSERT_THAT(waitpid(grandchild_pid, &status, 0), - SyscallSucceedsWithValue(grandchild_pid)); - EXPECT_TRUE(WIFSTOPPED(status) && WSTOPSIG(status) == SIGSTOP) - << " status " << status; - - // Resume the child with PTRACE_SYSCALL. Since the grandchild is still in - // signal-delivery-stop, the child should remain in vfork() waiting for the - // grandchild to exec or exit. - ASSERT_THAT(ptrace(PTRACE_SYSCALL, child_pid, 0, 0), SyscallSucceeds()); - absl::SleepFor(absl::Seconds(1)); - ASSERT_THAT(waitpid(child_pid, &status, WNOHANG), - SyscallSucceedsWithValue(0)); - - // Suppress the grandchild's SIGSTOP and wait for the grandchild to exit. Pass - // WNOWAIT to waitid() so that we don't acknowledge the grandchild's exit yet. - ASSERT_THAT(ptrace(PTRACE_CONT, grandchild_pid, 0, 0), SyscallSucceeds()); - siginfo_t siginfo = {}; - ASSERT_THAT(waitid(P_PID, grandchild_pid, &siginfo, WEXITED | WNOWAIT), - SyscallSucceeds()); - EXPECT_EQ(SIGCHLD, siginfo.si_signo); - EXPECT_EQ(CLD_EXITED, siginfo.si_code); - EXPECT_EQ(kExitTraceeExitCode, siginfo.si_status); - EXPECT_EQ(grandchild_pid, siginfo.si_pid); - EXPECT_EQ(getuid(), siginfo.si_uid); - - // The child should now be in PTRACE_EVENT_VFORK_DONE stop. The event - // message should still be the grandchild's PID. - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_EQ(SIGTRAP | (PTRACE_EVENT_VFORK_DONE << 8), status >> 8); - ASSERT_THAT(ptrace(PTRACE_GETEVENTMSG, child_pid, 0, &eventmsg), - SyscallSucceeds()); - EXPECT_EQ(grandchild_pid, eventmsg); - - // Resume the child with PTRACE_SYSCALL again and expect it to enter - // syscall-exit-stop for vfork() or clone(), either of which should return the - // grandchild's PID from the syscall. Aside from PTRACE_O_TRACESYSGOOD, - // syscall-stops are distinguished from signal-delivery-stop by - // PTRACE_GETSIGINFO returning a siginfo for which si_code == SIGTRAP or - // SIGTRAP|0x80. - ASSERT_THAT(ptrace(PTRACE_SYSCALL, child_pid, 0, 0), SyscallSucceeds()); - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFSTOPPED(status) && WSTOPSIG(status) == (SIGTRAP | 0x80)) - << " status " << status; - ASSERT_THAT(ptrace(PTRACE_GETSIGINFO, child_pid, 0, &siginfo), - SyscallSucceeds()); - EXPECT_TRUE(siginfo.si_code == SIGTRAP || siginfo.si_code == (SIGTRAP | 0x80)) - << "si_code = " << siginfo.si_code; -#ifdef __x86_64__ - { - struct user_regs_struct regs = {}; - ASSERT_THAT(ptrace(PTRACE_GETREGS, child_pid, 0, ®s), SyscallSucceeds()); - EXPECT_TRUE(regs.orig_rax == SYS_vfork || regs.orig_rax == SYS_clone) - << "orig_rax = " << regs.orig_rax; - EXPECT_EQ(grandchild_pid, regs.rax); - } -#endif // defined(__x86_64__) - - // After this point, the child will be making wait4 syscalls that will be - // interrupted by saving, so saving is not permitted. Note that this is - // explicitly released below once the grandchild exits. - DisableSave ds; - - // Resume the child with PTRACE_SYSCALL again and expect it to enter - // syscall-enter-stop for wait4(). - ASSERT_THAT(ptrace(PTRACE_SYSCALL, child_pid, 0, 0), SyscallSucceeds()); - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFSTOPPED(status) && WSTOPSIG(status) == (SIGTRAP | 0x80)) - << " status " << status; - ASSERT_THAT(ptrace(PTRACE_GETSIGINFO, child_pid, 0, &siginfo), - SyscallSucceeds()); - EXPECT_TRUE(siginfo.si_code == SIGTRAP || siginfo.si_code == (SIGTRAP | 0x80)) - << "si_code = " << siginfo.si_code; -#ifdef __x86_64__ - { - EXPECT_THAT(ptrace(PTRACE_PEEKUSER, child_pid, - offsetof(struct user_regs_struct, orig_rax), 0), - SyscallSucceedsWithValue(SYS_wait4)); - } -#endif // defined(__x86_64__) - - // Resume the child with PTRACE_SYSCALL again. Since the grandchild is - // waiting for the tracer (us) to acknowledge its exit first, wait4 should - // block. - ASSERT_THAT(ptrace(PTRACE_SYSCALL, child_pid, 0, 0), SyscallSucceeds()); - absl::SleepFor(absl::Seconds(1)); - ASSERT_THAT(waitpid(child_pid, &status, WNOHANG), - SyscallSucceedsWithValue(0)); - - // Acknowledge the grandchild's exit. - ASSERT_THAT(waitpid(grandchild_pid, &status, 0), - SyscallSucceedsWithValue(grandchild_pid)); - ds.reset(); - - // Now the child should enter syscall-exit-stop for wait4, returning with the - // grandchild's PID. - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFSTOPPED(status) && WSTOPSIG(status) == (SIGTRAP | 0x80)) - << " status " << status; -#ifdef __x86_64__ - { - struct user_regs_struct regs = {}; - ASSERT_THAT(ptrace(PTRACE_GETREGS, child_pid, 0, ®s), SyscallSucceeds()); - EXPECT_EQ(SYS_wait4, regs.orig_rax); - EXPECT_EQ(grandchild_pid, regs.rax); - } -#endif // defined(__x86_64__) - - // Detach from the child and wait for it to exit. - ASSERT_THAT(ptrace(PTRACE_DETACH, child_pid, 0, 0), SyscallSucceeds()); - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << " status " << status; -} - -// These tests requires knowledge of architecture-specific syscall convention. -#ifdef __x86_64__ -TEST(PtraceTest, Int3) { - SKIP_IF(PlatformSupportInt3() == PlatformSupport::NotSupported); - - pid_t const child_pid = fork(); - if (child_pid == 0) { - // In child process. - - // Enable tracing. - TEST_PCHECK(ptrace(PTRACE_TRACEME, 0, 0, 0) == 0); - - // Interrupt 3 - trap to debugger - asm("int3"); - - _exit(56); - } - // In parent process. - ASSERT_THAT(child_pid, SyscallSucceeds()); - - int status; - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFSTOPPED(status) && WSTOPSIG(status) == SIGTRAP) - << " status " << status; - - ASSERT_THAT(ptrace(PTRACE_CONT, child_pid, 0, 0), SyscallSucceeds()); - - // The child should validate the injected return value and then exit normally. - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 56) - << " status " << status; -} - -TEST(PtraceTest, Sysemu_PokeUser) { - constexpr int kSysemuHelperFirstExitCode = 126; - constexpr uint64_t kSysemuInjectedExitGroupReturn = 42; - - pid_t const child_pid = fork(); - if (child_pid == 0) { - // In child process. - - // Enable tracing, then raise SIGSTOP and expect our parent to suppress it. - TEST_PCHECK(ptrace(PTRACE_TRACEME, 0, 0, 0) == 0); - RaiseSignal(SIGSTOP); - - // Try to exit_group, expecting the tracer to skip the syscall and set its - // own return value. - int const rv = syscall(SYS_exit_group, kSysemuHelperFirstExitCode); - TEST_PCHECK_MSG(rv == kSysemuInjectedExitGroupReturn, - "exit_group returned incorrect value"); - - _exit(0); - } - // In parent process. - ASSERT_THAT(child_pid, SyscallSucceeds()); - - // Wait for the child to send itself SIGSTOP and enter signal-delivery-stop. - int status; - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFSTOPPED(status) && WSTOPSIG(status) == SIGSTOP) - << " status " << status; - - // Suppress the SIGSTOP and wait for the child to enter syscall-enter-stop - // for its first exit_group syscall. - ASSERT_THAT(ptrace(kPtraceSysemu, child_pid, 0, 0), SyscallSucceeds()); - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFSTOPPED(status) && WSTOPSIG(status) == SIGTRAP) - << " status " << status; - - struct user_regs_struct regs = {}; - ASSERT_THAT(ptrace(PTRACE_GETREGS, child_pid, 0, ®s), SyscallSucceeds()); - EXPECT_EQ(SYS_exit_group, regs.orig_rax); - EXPECT_EQ(-ENOSYS, regs.rax); - EXPECT_EQ(kSysemuHelperFirstExitCode, regs.rdi); - - // Replace the exit_group return value, then resume the child, which should - // automatically skip the syscall. - ASSERT_THAT( - ptrace(PTRACE_POKEUSER, child_pid, offsetof(struct user_regs_struct, rax), - kSysemuInjectedExitGroupReturn), - SyscallSucceeds()); - ASSERT_THAT(ptrace(PTRACE_DETACH, child_pid, 0, 0), SyscallSucceeds()); - - // The child should validate the injected return value and then exit normally. - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << " status " << status; -} - -// This test also cares about syscall-exit-stop. -TEST(PtraceTest, ERESTART_NoRandomSave) { - constexpr int kSigno = SIGUSR1; - - pid_t const child_pid = fork(); - if (child_pid == 0) { - // In child process. - - // Ignore, but unblock, kSigno. - struct sigaction sa = {}; - sa.sa_handler = SIG_IGN; - TEST_PCHECK(sigfillset(&sa.sa_mask) == 0); - TEST_PCHECK(sigaction(kSigno, &sa, nullptr) == 0); - MaybeSave(); - TEST_PCHECK(sigprocmask(SIG_UNBLOCK, &sa.sa_mask, nullptr) == 0); - MaybeSave(); - - // Enable tracing, then raise SIGSTOP and expect our parent to suppress it. - TEST_PCHECK(ptrace(PTRACE_TRACEME, 0, 0, 0) == 0); - RaiseSignal(SIGSTOP); - - // Invoke the pause syscall, which normally should not return until we - // receive a signal that "either terminates the process or causes the - // invocation of a signal-catching function". - pause(); - - _exit(0); - } - ASSERT_THAT(child_pid, SyscallSucceeds()); - - // Wait for the child to send itself SIGSTOP and enter signal-delivery-stop. - int status; - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFSTOPPED(status) && WSTOPSIG(status) == SIGSTOP) - << " status " << status; - - // After this point, the child's pause syscall will be interrupted by saving, - // so saving is not permitted. Note that this is explicitly released below - // once the child is stopped. - DisableSave ds; - - // Suppress the SIGSTOP and wait for the child to enter syscall-enter-stop for - // its pause syscall. - ASSERT_THAT(ptrace(PTRACE_SYSCALL, child_pid, 0, 0), SyscallSucceeds()); - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFSTOPPED(status) && WSTOPSIG(status) == SIGTRAP) - << " status " << status; - - struct user_regs_struct regs = {}; - ASSERT_THAT(ptrace(PTRACE_GETREGS, child_pid, 0, ®s), SyscallSucceeds()); - EXPECT_EQ(SYS_pause, regs.orig_rax); - EXPECT_EQ(-ENOSYS, regs.rax); - - // Resume the child with PTRACE_SYSCALL and expect it to block in the pause - // syscall. - ASSERT_THAT(ptrace(PTRACE_SYSCALL, child_pid, 0, 0), SyscallSucceeds()); - absl::SleepFor(absl::Seconds(1)); - ASSERT_THAT(waitpid(child_pid, &status, WNOHANG), - SyscallSucceedsWithValue(0)); - - // Send the child kSigno, causing it to return ERESTARTNOHAND and enter - // syscall-exit-stop from the pause syscall. - constexpr int ERESTARTNOHAND = 514; - ASSERT_THAT(kill(child_pid, kSigno), SyscallSucceeds()); - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFSTOPPED(status) && WSTOPSIG(status) == SIGTRAP) - << " status " << status; - ds.reset(); - - ASSERT_THAT(ptrace(PTRACE_GETREGS, child_pid, 0, ®s), SyscallSucceeds()); - EXPECT_EQ(SYS_pause, regs.orig_rax); - EXPECT_EQ(-ERESTARTNOHAND, regs.rax); - - // Replace the return value from pause with 0, causing pause to not be - // restarted despite kSigno being ignored. - ASSERT_THAT(ptrace(PTRACE_POKEUSER, child_pid, - offsetof(struct user_regs_struct, rax), 0), - SyscallSucceeds()); - - // Detach from the child and wait for it to exit. - ASSERT_THAT(ptrace(PTRACE_DETACH, child_pid, 0, 0), SyscallSucceeds()); - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << " status " << status; -} -#endif // defined(__x86_64__) - -TEST(PtraceTest, Seize_Interrupt_Listen) { - volatile long child_should_spin = 1; - pid_t const child_pid = fork(); - if (child_pid == 0) { - // In child process. - while (child_should_spin) { - SleepSafe(absl::Seconds(1)); - } - _exit(1); - } - - // In parent process. - ASSERT_THAT(child_pid, SyscallSucceeds()); - - // Attach to the child with PTRACE_SEIZE; doing so should not stop the child. - ASSERT_THAT(ptrace(PTRACE_SEIZE, child_pid, 0, 0), SyscallSucceeds()); - int status; - EXPECT_THAT(waitpid(child_pid, &status, WNOHANG), - SyscallSucceedsWithValue(0)); - - // Stop the child with PTRACE_INTERRUPT. - ASSERT_THAT(ptrace(PTRACE_INTERRUPT, child_pid, 0, 0), SyscallSucceeds()); - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_EQ(SIGTRAP | (kPtraceEventStop << 8), status >> 8); - - // Unset child_should_spin to verify that the child never leaves the spin - // loop. - ASSERT_THAT(ptrace(PTRACE_POKEDATA, child_pid, &child_should_spin, 0), - SyscallSucceeds()); - - // Send SIGSTOP to the child, then resume it, allowing it to proceed to - // signal-delivery-stop. - ASSERT_THAT(kill(child_pid, SIGSTOP), SyscallSucceeds()); - ASSERT_THAT(ptrace(PTRACE_CONT, child_pid, 0, 0), SyscallSucceeds()); - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFSTOPPED(status) && WSTOPSIG(status) == SIGSTOP) - << " status " << status; - - // Release the child from signal-delivery-stop without suppressing the - // SIGSTOP, causing it to enter group-stop. - ASSERT_THAT(ptrace(PTRACE_CONT, child_pid, 0, SIGSTOP), SyscallSucceeds()); - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_EQ(SIGSTOP | (kPtraceEventStop << 8), status >> 8); - - // "The state of the tracee after PTRACE_LISTEN is somewhat of a gray area: it - // is not in any ptrace-stop (ptrace commands won't work on it, and it will - // deliver waitpid(2) notifications), but it also may be considered 'stopped' - // because it is not executing instructions (is not scheduled), and if it was - // in group-stop before PTRACE_LISTEN, it will not respond to signals until - // SIGCONT is received." - ptrace(2). - ASSERT_THAT(ptrace(PTRACE_LISTEN, child_pid, 0, 0), SyscallSucceeds()); - EXPECT_THAT(ptrace(PTRACE_CONT, child_pid, 0, 0), - SyscallFailsWithErrno(ESRCH)); - EXPECT_THAT(waitpid(child_pid, &status, WNOHANG), - SyscallSucceedsWithValue(0)); - EXPECT_THAT(kill(child_pid, SIGTERM), SyscallSucceeds()); - absl::SleepFor(absl::Seconds(1)); - EXPECT_THAT(waitpid(child_pid, &status, WNOHANG), - SyscallSucceedsWithValue(0)); - - // Send SIGCONT to the child, causing it to leave group-stop and re-trap due - // to PTRACE_LISTEN. - EXPECT_THAT(kill(child_pid, SIGCONT), SyscallSucceeds()); - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_EQ(SIGTRAP | (kPtraceEventStop << 8), status >> 8); - - // Detach the child and expect it to exit due to the SIGTERM we sent while - // it was stopped by PTRACE_LISTEN. - ASSERT_THAT(ptrace(PTRACE_DETACH, child_pid, 0, 0), SyscallSucceeds()); - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFSIGNALED(status) && WTERMSIG(status) == SIGTERM) - << " status " << status; -} - -TEST(PtraceTest, Interrupt_Listen_RequireSeize) { - pid_t const child_pid = fork(); - if (child_pid == 0) { - // In child process. - TEST_PCHECK(ptrace(PTRACE_TRACEME, 0, 0, 0) == 0); - MaybeSave(); - raise(SIGSTOP); - _exit(0); - } - // In parent process. - ASSERT_THAT(child_pid, SyscallSucceeds()); - - // Wait for the child to send itself SIGSTOP and enter signal-delivery-stop. - int status; - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFSTOPPED(status) && WSTOPSIG(status) == SIGSTOP) - << " status " << status; - - // PTRACE_INTERRUPT and PTRACE_LISTEN should fail since the child wasn't - // attached with PTRACE_SEIZE, leaving the child in signal-delivery-stop. - EXPECT_THAT(ptrace(PTRACE_INTERRUPT, child_pid, 0, 0), - SyscallFailsWithErrno(EIO)); - EXPECT_THAT(ptrace(PTRACE_LISTEN, child_pid, 0, 0), - SyscallFailsWithErrno(EIO)); - - // Suppress SIGSTOP and detach from the child, expecting it to exit normally. - ASSERT_THAT(ptrace(PTRACE_DETACH, child_pid, 0, 0), SyscallSucceeds()); - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << " status " << status; -} - -TEST(PtraceTest, SeizeSetOptions) { - pid_t const child_pid = fork(); - if (child_pid == 0) { - // In child process. - while (true) { - SleepSafe(absl::Seconds(1)); - } - } - - // In parent process. - ASSERT_THAT(child_pid, SyscallSucceeds()); - - // Attach to the child with PTRACE_SEIZE while setting PTRACE_O_TRACESYSGOOD. - ASSERT_THAT(ptrace(PTRACE_SEIZE, child_pid, 0, PTRACE_O_TRACESYSGOOD), - SyscallSucceeds()); - - // Stop the child with PTRACE_INTERRUPT. - ASSERT_THAT(ptrace(PTRACE_INTERRUPT, child_pid, 0, 0), SyscallSucceeds()); - int status; - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_EQ(SIGTRAP | (kPtraceEventStop << 8), status >> 8); - - // Resume the child with PTRACE_SYSCALL and wait for it to enter - // syscall-enter-stop. The stop signal status from the syscall stop should be - // SIGTRAP|0x80, reflecting PTRACE_O_TRACESYSGOOD. - ASSERT_THAT(ptrace(PTRACE_SYSCALL, child_pid, 0, 0), SyscallSucceeds()); - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFSTOPPED(status) && WSTOPSIG(status) == (SIGTRAP | 0x80)) - << " status " << status; - - // Clean up the child. - ASSERT_THAT(kill(child_pid, SIGKILL), SyscallSucceeds()); - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - if (WIFSTOPPED(status) && WSTOPSIG(status) == (SIGTRAP | 0x80)) { - // "SIGKILL kills even within system calls (syscall-exit-stop is not - // generated prior to death by SIGKILL). The net effect is that SIGKILL - // always kills the process (all its threads), even if some threads of the - // process are ptraced." - ptrace(2). This is technically true, but... - // - // When we send SIGKILL to the child, kernel/signal.c:complete_signal() => - // signal_wake_up(resume=1) kicks the tracee out of the syscall-enter-stop. - // The pending SIGKILL causes the syscall to be skipped, but the child - // thread still reports syscall-exit before checking for pending signals; in - // current kernels, this is - // arch/x86/entry/common.c:syscall_return_slowpath() => - // syscall_slow_exit_work() => - // include/linux/tracehook.h:tracehook_report_syscall_exit() => - // ptrace_report_syscall() => kernel/signal.c:ptrace_notify() => - // ptrace_do_notify() => ptrace_stop(). - // - // ptrace_stop() sets the task's state to TASK_TRACED and the task's - // exit_code to SIGTRAP|0x80 (passed by ptrace_report_syscall()), then calls - // freezable_schedule(). freezable_schedule() eventually reaches - // __schedule(), which detects signal_pending_state() due to the pending - // SIGKILL, sets the task's state back to TASK_RUNNING, and returns without - // descheduling. Thus, the task never enters syscall-exit-stop. However, if - // our wait4() => kernel/exit.c:wait_task_stopped() racily observes the - // TASK_TRACED state and the non-zero exit code set by ptrace_stop() before - // __schedule() sets the state back to TASK_RUNNING, it will return the - // task's exit_code as status W_STOPCODE(SIGTRAP|0x80). So we get a spurious - // syscall-exit-stop notification, and need to wait4() again for task exit. - // - // gVisor is not susceptible to this race because - // kernel.Task.waitCollectTraceeStopLocked() checks specifically for an - // active ptraceStop, which is not initiated if SIGKILL is pending. - std::cout << "Observed syscall-exit after SIGKILL"; - ASSERT_THAT(waitpid(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - } - EXPECT_TRUE(WIFSIGNALED(status) && WTERMSIG(status) == SIGKILL) - << " status " << status; -} - -} // namespace - -} // namespace testing -} // namespace gvisor - -int main(int argc, char** argv) { - gvisor::testing::TestInit(&argc, &argv); - - if (absl::GetFlag(FLAGS_ptrace_test_execve_child)) { - gvisor::testing::RunExecveChild(); - } - - return RUN_ALL_TESTS(); -} diff --git a/test/syscalls/linux/pty.cc b/test/syscalls/linux/pty.cc deleted file mode 100644 index dafe64d20..000000000 --- a/test/syscalls/linux/pty.cc +++ /dev/null @@ -1,1616 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <fcntl.h> -#include <linux/capability.h> -#include <linux/major.h> -#include <poll.h> -#include <sched.h> -#include <signal.h> -#include <sys/ioctl.h> -#include <sys/mman.h> -#include <sys/stat.h> -#include <sys/sysmacros.h> -#include <sys/types.h> -#include <sys/wait.h> -#include <termios.h> -#include <unistd.h> - -#include <iostream> - -#include "gtest/gtest.h" -#include "absl/base/macros.h" -#include "absl/strings/str_cat.h" -#include "absl/synchronization/notification.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/util/capability_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/posix_error.h" -#include "test/util/pty_util.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -using ::testing::AnyOf; -using ::testing::Contains; -using ::testing::Eq; -using ::testing::Not; - -// Tests Unix98 pseudoterminals. -// -// These tests assume that /dev/ptmx exists and is associated with a devpts -// filesystem mounted at /dev/pts/. While a Linux distribution could -// theoretically place those anywhere, glibc expects those locations, so they -// are effectively fixed. - -// Minor device number for an unopened ptmx file. -constexpr int kPtmxMinor = 2; - -// The timeout when polling for data from a pty. When data is written to one end -// of a pty, Linux asynchronously makes it available to the other end, so we -// have to wait. -constexpr absl::Duration kTimeout = absl::Seconds(20); - -// The maximum line size in bytes returned per read from a pty file. -constexpr int kMaxLineSize = 4096; - -constexpr char kMasterPath[] = "/dev/ptmx"; - -// glibc defines its own, different, version of struct termios. We care about -// what the kernel does, not glibc. -#define KERNEL_NCCS 19 -struct kernel_termios { - tcflag_t c_iflag; - tcflag_t c_oflag; - tcflag_t c_cflag; - tcflag_t c_lflag; - cc_t c_line; - cc_t c_cc[KERNEL_NCCS]; -}; - -bool operator==(struct kernel_termios const& a, - struct kernel_termios const& b) { - return memcmp(&a, &b, sizeof(a)) == 0; -} - -// Returns the termios-style control character for the passed character. -// -// e.g., for Ctrl-C, i.e., ^C, call ControlCharacter('C'). -// -// Standard control characters are ASCII bytes 0 through 31. -constexpr char ControlCharacter(char c) { - // A is 1, B is 2, etc. - return c - 'A' + 1; -} - -// Returns the printable character the given control character represents. -constexpr char FromControlCharacter(char c) { return c + 'A' - 1; } - -// Returns true if c is a control character. -// -// Standard control characters are ASCII bytes 0 through 31. -constexpr bool IsControlCharacter(char c) { return c <= 31; } - -struct Field { - const char* name; - uint64_t mask; - uint64_t value; -}; - -// ParseFields returns a string representation of value, using the names in -// fields. -std::string ParseFields(const Field* fields, size_t len, uint64_t value) { - bool first = true; - std::string s; - for (size_t i = 0; i < len; i++) { - const Field f = fields[i]; - if ((value & f.mask) == f.value) { - if (!first) { - s += "|"; - } - s += f.name; - first = false; - value &= ~f.mask; - } - } - - if (value) { - if (!first) { - s += "|"; - } - absl::StrAppend(&s, value); - } - - return s; -} - -const Field kIflagFields[] = { - {"IGNBRK", IGNBRK, IGNBRK}, {"BRKINT", BRKINT, BRKINT}, - {"IGNPAR", IGNPAR, IGNPAR}, {"PARMRK", PARMRK, PARMRK}, - {"INPCK", INPCK, INPCK}, {"ISTRIP", ISTRIP, ISTRIP}, - {"INLCR", INLCR, INLCR}, {"IGNCR", IGNCR, IGNCR}, - {"ICRNL", ICRNL, ICRNL}, {"IUCLC", IUCLC, IUCLC}, - {"IXON", IXON, IXON}, {"IXANY", IXANY, IXANY}, - {"IXOFF", IXOFF, IXOFF}, {"IMAXBEL", IMAXBEL, IMAXBEL}, - {"IUTF8", IUTF8, IUTF8}, -}; - -const Field kOflagFields[] = { - {"OPOST", OPOST, OPOST}, {"OLCUC", OLCUC, OLCUC}, - {"ONLCR", ONLCR, ONLCR}, {"OCRNL", OCRNL, OCRNL}, - {"ONOCR", ONOCR, ONOCR}, {"ONLRET", ONLRET, ONLRET}, - {"OFILL", OFILL, OFILL}, {"OFDEL", OFDEL, OFDEL}, - {"NL0", NLDLY, NL0}, {"NL1", NLDLY, NL1}, - {"CR0", CRDLY, CR0}, {"CR1", CRDLY, CR1}, - {"CR2", CRDLY, CR2}, {"CR3", CRDLY, CR3}, - {"TAB0", TABDLY, TAB0}, {"TAB1", TABDLY, TAB1}, - {"TAB2", TABDLY, TAB2}, {"TAB3", TABDLY, TAB3}, - {"BS0", BSDLY, BS0}, {"BS1", BSDLY, BS1}, - {"FF0", FFDLY, FF0}, {"FF1", FFDLY, FF1}, - {"VT0", VTDLY, VT0}, {"VT1", VTDLY, VT1}, - {"XTABS", XTABS, XTABS}, -}; - -#ifndef IBSHIFT -// Shift from CBAUD to CIBAUD. -#define IBSHIFT 16 -#endif - -const Field kCflagFields[] = { - {"B0", CBAUD, B0}, - {"B50", CBAUD, B50}, - {"B75", CBAUD, B75}, - {"B110", CBAUD, B110}, - {"B134", CBAUD, B134}, - {"B150", CBAUD, B150}, - {"B200", CBAUD, B200}, - {"B300", CBAUD, B300}, - {"B600", CBAUD, B600}, - {"B1200", CBAUD, B1200}, - {"B1800", CBAUD, B1800}, - {"B2400", CBAUD, B2400}, - {"B4800", CBAUD, B4800}, - {"B9600", CBAUD, B9600}, - {"B19200", CBAUD, B19200}, - {"B38400", CBAUD, B38400}, - {"CS5", CSIZE, CS5}, - {"CS6", CSIZE, CS6}, - {"CS7", CSIZE, CS7}, - {"CS8", CSIZE, CS8}, - {"CSTOPB", CSTOPB, CSTOPB}, - {"CREAD", CREAD, CREAD}, - {"PARENB", PARENB, PARENB}, - {"PARODD", PARODD, PARODD}, - {"HUPCL", HUPCL, HUPCL}, - {"CLOCAL", CLOCAL, CLOCAL}, - {"B57600", CBAUD, B57600}, - {"B115200", CBAUD, B115200}, - {"B230400", CBAUD, B230400}, - {"B460800", CBAUD, B460800}, - {"B500000", CBAUD, B500000}, - {"B576000", CBAUD, B576000}, - {"B921600", CBAUD, B921600}, - {"B1000000", CBAUD, B1000000}, - {"B1152000", CBAUD, B1152000}, - {"B1500000", CBAUD, B1500000}, - {"B2000000", CBAUD, B2000000}, - {"B2500000", CBAUD, B2500000}, - {"B3000000", CBAUD, B3000000}, - {"B3500000", CBAUD, B3500000}, - {"B4000000", CBAUD, B4000000}, - {"CMSPAR", CMSPAR, CMSPAR}, - {"CRTSCTS", CRTSCTS, CRTSCTS}, - {"IB0", CIBAUD, B0 << IBSHIFT}, - {"IB50", CIBAUD, B50 << IBSHIFT}, - {"IB75", CIBAUD, B75 << IBSHIFT}, - {"IB110", CIBAUD, B110 << IBSHIFT}, - {"IB134", CIBAUD, B134 << IBSHIFT}, - {"IB150", CIBAUD, B150 << IBSHIFT}, - {"IB200", CIBAUD, B200 << IBSHIFT}, - {"IB300", CIBAUD, B300 << IBSHIFT}, - {"IB600", CIBAUD, B600 << IBSHIFT}, - {"IB1200", CIBAUD, B1200 << IBSHIFT}, - {"IB1800", CIBAUD, B1800 << IBSHIFT}, - {"IB2400", CIBAUD, B2400 << IBSHIFT}, - {"IB4800", CIBAUD, B4800 << IBSHIFT}, - {"IB9600", CIBAUD, B9600 << IBSHIFT}, - {"IB19200", CIBAUD, B19200 << IBSHIFT}, - {"IB38400", CIBAUD, B38400 << IBSHIFT}, - {"IB57600", CIBAUD, B57600 << IBSHIFT}, - {"IB115200", CIBAUD, B115200 << IBSHIFT}, - {"IB230400", CIBAUD, B230400 << IBSHIFT}, - {"IB460800", CIBAUD, B460800 << IBSHIFT}, - {"IB500000", CIBAUD, B500000 << IBSHIFT}, - {"IB576000", CIBAUD, B576000 << IBSHIFT}, - {"IB921600", CIBAUD, B921600 << IBSHIFT}, - {"IB1000000", CIBAUD, B1000000 << IBSHIFT}, - {"IB1152000", CIBAUD, B1152000 << IBSHIFT}, - {"IB1500000", CIBAUD, B1500000 << IBSHIFT}, - {"IB2000000", CIBAUD, B2000000 << IBSHIFT}, - {"IB2500000", CIBAUD, B2500000 << IBSHIFT}, - {"IB3000000", CIBAUD, B3000000 << IBSHIFT}, - {"IB3500000", CIBAUD, B3500000 << IBSHIFT}, - {"IB4000000", CIBAUD, B4000000 << IBSHIFT}, -}; - -const Field kLflagFields[] = { - {"ISIG", ISIG, ISIG}, {"ICANON", ICANON, ICANON}, - {"XCASE", XCASE, XCASE}, {"ECHO", ECHO, ECHO}, - {"ECHOE", ECHOE, ECHOE}, {"ECHOK", ECHOK, ECHOK}, - {"ECHONL", ECHONL, ECHONL}, {"NOFLSH", NOFLSH, NOFLSH}, - {"TOSTOP", TOSTOP, TOSTOP}, {"ECHOCTL", ECHOCTL, ECHOCTL}, - {"ECHOPRT", ECHOPRT, ECHOPRT}, {"ECHOKE", ECHOKE, ECHOKE}, - {"FLUSHO", FLUSHO, FLUSHO}, {"PENDIN", PENDIN, PENDIN}, - {"IEXTEN", IEXTEN, IEXTEN}, {"EXTPROC", EXTPROC, EXTPROC}, -}; - -std::string FormatCC(char c) { - if (isgraph(c)) { - return std::string(1, c); - } else if (c == ' ') { - return " "; - } else if (c == '\t') { - return "\\t"; - } else if (c == '\r') { - return "\\r"; - } else if (c == '\n') { - return "\\n"; - } else if (c == '\0') { - return "\\0"; - } else if (IsControlCharacter(c)) { - return absl::StrCat("^", std::string(1, FromControlCharacter(c))); - } - return absl::StrCat("\\x", absl::Hex(c)); -} - -std::ostream& operator<<(std::ostream& os, struct kernel_termios const& a) { - os << "{ c_iflag = " - << ParseFields(kIflagFields, ABSL_ARRAYSIZE(kIflagFields), a.c_iflag); - os << ", c_oflag = " - << ParseFields(kOflagFields, ABSL_ARRAYSIZE(kOflagFields), a.c_oflag); - os << ", c_cflag = " - << ParseFields(kCflagFields, ABSL_ARRAYSIZE(kCflagFields), a.c_cflag); - os << ", c_lflag = " - << ParseFields(kLflagFields, ABSL_ARRAYSIZE(kLflagFields), a.c_lflag); - os << ", c_line = " << a.c_line; - os << ", c_cc = { [VINTR] = '" << FormatCC(a.c_cc[VINTR]); - os << "', [VQUIT] = '" << FormatCC(a.c_cc[VQUIT]); - os << "', [VERASE] = '" << FormatCC(a.c_cc[VERASE]); - os << "', [VKILL] = '" << FormatCC(a.c_cc[VKILL]); - os << "', [VEOF] = '" << FormatCC(a.c_cc[VEOF]); - os << "', [VTIME] = '" << static_cast<int>(a.c_cc[VTIME]); - os << "', [VMIN] = " << static_cast<int>(a.c_cc[VMIN]); - os << ", [VSWTC] = '" << FormatCC(a.c_cc[VSWTC]); - os << "', [VSTART] = '" << FormatCC(a.c_cc[VSTART]); - os << "', [VSTOP] = '" << FormatCC(a.c_cc[VSTOP]); - os << "', [VSUSP] = '" << FormatCC(a.c_cc[VSUSP]); - os << "', [VEOL] = '" << FormatCC(a.c_cc[VEOL]); - os << "', [VREPRINT] = '" << FormatCC(a.c_cc[VREPRINT]); - os << "', [VDISCARD] = '" << FormatCC(a.c_cc[VDISCARD]); - os << "', [VWERASE] = '" << FormatCC(a.c_cc[VWERASE]); - os << "', [VLNEXT] = '" << FormatCC(a.c_cc[VLNEXT]); - os << "', [VEOL2] = '" << FormatCC(a.c_cc[VEOL2]); - os << "'}"; - return os; -} - -// Return the default termios settings for a new terminal. -struct kernel_termios DefaultTermios() { - struct kernel_termios t = {}; - t.c_iflag = IXON | ICRNL; - t.c_oflag = OPOST | ONLCR; - t.c_cflag = B38400 | CSIZE | CS8 | CREAD; - t.c_lflag = ISIG | ICANON | ECHO | ECHOE | ECHOK | ECHOCTL | ECHOKE | IEXTEN; - t.c_line = 0; - t.c_cc[VINTR] = ControlCharacter('C'); - t.c_cc[VQUIT] = ControlCharacter('\\'); - t.c_cc[VERASE] = '\x7f'; - t.c_cc[VKILL] = ControlCharacter('U'); - t.c_cc[VEOF] = ControlCharacter('D'); - t.c_cc[VTIME] = '\0'; - t.c_cc[VMIN] = 1; - t.c_cc[VSWTC] = '\0'; - t.c_cc[VSTART] = ControlCharacter('Q'); - t.c_cc[VSTOP] = ControlCharacter('S'); - t.c_cc[VSUSP] = ControlCharacter('Z'); - t.c_cc[VEOL] = '\0'; - t.c_cc[VREPRINT] = ControlCharacter('R'); - t.c_cc[VDISCARD] = ControlCharacter('O'); - t.c_cc[VWERASE] = ControlCharacter('W'); - t.c_cc[VLNEXT] = ControlCharacter('V'); - t.c_cc[VEOL2] = '\0'; - return t; -} - -// PollAndReadFd tries to read count bytes from buf within timeout. -// -// Returns a partial read if some bytes were read. -// -// fd must be non-blocking. -PosixErrorOr<size_t> PollAndReadFd(int fd, void* buf, size_t count, - absl::Duration timeout) { - absl::Time end = absl::Now() + timeout; - - size_t completed = 0; - absl::Duration remaining; - while ((remaining = end - absl::Now()) > absl::ZeroDuration()) { - struct pollfd pfd = {fd, POLLIN, 0}; - int ret = RetryEINTR(poll)(&pfd, 1, absl::ToInt64Milliseconds(remaining)); - if (ret < 0) { - return PosixError(errno, "poll failed"); - } else if (ret == 0) { - // Timed out. - continue; - } else if (ret != 1) { - return PosixError(EINVAL, absl::StrCat("Bad poll ret ", ret)); - } - - ssize_t n = - ReadFd(fd, static_cast<char*>(buf) + completed, count - completed); - if (n < 0) { - return PosixError(errno, "read failed"); - } - completed += n; - if (completed >= count) { - return completed; - } - } - - if (completed) { - return completed; - } - return PosixError(ETIMEDOUT, "Poll timed out"); -} - -TEST(PtyTrunc, Truncate) { - // Opening PTYs with O_TRUNC shouldn't cause an error, but calls to - // (f)truncate should. - FileDescriptor master = - ASSERT_NO_ERRNO_AND_VALUE(Open(kMasterPath, O_RDWR | O_TRUNC)); - int n = ASSERT_NO_ERRNO_AND_VALUE(SlaveID(master)); - std::string spath = absl::StrCat("/dev/pts/", n); - FileDescriptor slave = - ASSERT_NO_ERRNO_AND_VALUE(Open(spath, O_RDWR | O_NONBLOCK | O_TRUNC)); - - EXPECT_THAT(truncate(kMasterPath, 0), SyscallFailsWithErrno(EINVAL)); - EXPECT_THAT(truncate(spath.c_str(), 0), SyscallFailsWithErrno(EINVAL)); - EXPECT_THAT(ftruncate(master.get(), 0), SyscallFailsWithErrno(EINVAL)); - EXPECT_THAT(ftruncate(slave.get(), 0), SyscallFailsWithErrno(EINVAL)); -} - -TEST(BasicPtyTest, StatUnopenedMaster) { - struct stat s; - ASSERT_THAT(stat(kMasterPath, &s), SyscallSucceeds()); - - EXPECT_EQ(s.st_rdev, makedev(TTYAUX_MAJOR, kPtmxMinor)); - EXPECT_EQ(s.st_size, 0); - EXPECT_EQ(s.st_blocks, 0); - - // ptmx attached to a specific devpts mount uses block size 1024. See - // fs/devpts/inode.c:devpts_fill_super. - // - // The global ptmx device uses the block size of the filesystem it is created - // on (which is usually 4096 for disk filesystems). - EXPECT_THAT(s.st_blksize, AnyOf(Eq(1024), Eq(4096))); -} - -// Waits for count bytes to be readable from fd. Unlike poll, which can return -// before all data is moved into a pty's read buffer, this function waits for -// all count bytes to become readable. -PosixErrorOr<int> WaitUntilReceived(int fd, int count) { - int buffered = -1; - absl::Duration remaining; - absl::Time end = absl::Now() + kTimeout; - while ((remaining = end - absl::Now()) > absl::ZeroDuration()) { - if (ioctl(fd, FIONREAD, &buffered) < 0) { - return PosixError(errno, "failed FIONREAD ioctl"); - } - if (buffered >= count) { - return buffered; - } - absl::SleepFor(absl::Milliseconds(500)); - } - return PosixError( - ETIMEDOUT, - absl::StrFormat( - "FIONREAD timed out, receiving only %d of %d expected bytes", - buffered, count)); -} - -// Verifies that there is nothing left to read from fd. -void ExpectFinished(const FileDescriptor& fd) { - // Nothing more to read. - char c; - EXPECT_THAT(ReadFd(fd.get(), &c, 1), SyscallFailsWithErrno(EAGAIN)); -} - -// Verifies that we can read expected bytes from fd into buf. -void ExpectReadable(const FileDescriptor& fd, int expected, char* buf) { - size_t n = ASSERT_NO_ERRNO_AND_VALUE( - PollAndReadFd(fd.get(), buf, expected, kTimeout)); - EXPECT_EQ(expected, n); -} - -TEST(BasicPtyTest, OpenMasterSlave) { - FileDescriptor master = ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/ptmx", O_RDWR)); - FileDescriptor slave = ASSERT_NO_ERRNO_AND_VALUE(OpenSlave(master)); -} - -// The slave entry in /dev/pts/ disappears when the master is closed, even if -// the slave is still open. -TEST(BasicPtyTest, SlaveEntryGoneAfterMasterClose) { - FileDescriptor master = ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/ptmx", O_RDWR)); - FileDescriptor slave = ASSERT_NO_ERRNO_AND_VALUE(OpenSlave(master)); - - // Get pty index. - int index = -1; - ASSERT_THAT(ioctl(master.get(), TIOCGPTN, &index), SyscallSucceeds()); - - std::string path = absl::StrCat("/dev/pts/", index); - - struct stat st; - EXPECT_THAT(stat(path.c_str(), &st), SyscallSucceeds()); - - master.reset(); - - EXPECT_THAT(stat(path.c_str(), &st), SyscallFailsWithErrno(ENOENT)); -} - -TEST(BasicPtyTest, Getdents) { - FileDescriptor master1 = ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/ptmx", O_RDWR)); - int index1 = -1; - ASSERT_THAT(ioctl(master1.get(), TIOCGPTN, &index1), SyscallSucceeds()); - FileDescriptor slave1 = ASSERT_NO_ERRNO_AND_VALUE(OpenSlave(master1)); - - FileDescriptor master2 = ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/ptmx", O_RDWR)); - int index2 = -1; - ASSERT_THAT(ioctl(master2.get(), TIOCGPTN, &index2), SyscallSucceeds()); - FileDescriptor slave2 = ASSERT_NO_ERRNO_AND_VALUE(OpenSlave(master2)); - - // The directory contains ptmx, index1, and index2. (Plus any additional PTYs - // unrelated to this test.) - - std::vector<std::string> contents = - ASSERT_NO_ERRNO_AND_VALUE(ListDir("/dev/pts/", true)); - EXPECT_THAT(contents, Contains(absl::StrCat(index1))); - EXPECT_THAT(contents, Contains(absl::StrCat(index2))); - - master2.reset(); - - // The directory contains ptmx and index1, but not index2 since the master is - // closed. (Plus any additional PTYs unrelated to this test.) - - contents = ASSERT_NO_ERRNO_AND_VALUE(ListDir("/dev/pts/", true)); - EXPECT_THAT(contents, Contains(absl::StrCat(index1))); - EXPECT_THAT(contents, Not(Contains(absl::StrCat(index2)))); - - // N.B. devpts supports legacy "single-instance" mode and new "multi-instance" - // mode. In legacy mode, devpts does not contain a "ptmx" device (the distro - // must use mknod to create it somewhere, presumably /dev/ptmx). - // Multi-instance mode does include a "ptmx" device tied to that mount. - // - // We don't check for the presence or absence of "ptmx", as distros vary in - // their usage of the two modes. -} - -class PtyTest : public ::testing::Test { - protected: - void SetUp() override { - master_ = ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/ptmx", O_RDWR | O_NONBLOCK)); - slave_ = ASSERT_NO_ERRNO_AND_VALUE(OpenSlave(master_)); - } - - void DisableCanonical() { - struct kernel_termios t = {}; - EXPECT_THAT(ioctl(slave_.get(), TCGETS, &t), SyscallSucceeds()); - t.c_lflag &= ~ICANON; - EXPECT_THAT(ioctl(slave_.get(), TCSETS, &t), SyscallSucceeds()); - } - - void EnableCanonical() { - struct kernel_termios t = {}; - EXPECT_THAT(ioctl(slave_.get(), TCGETS, &t), SyscallSucceeds()); - t.c_lflag |= ICANON; - EXPECT_THAT(ioctl(slave_.get(), TCSETS, &t), SyscallSucceeds()); - } - - // Master and slave ends of the PTY. Non-blocking. - FileDescriptor master_; - FileDescriptor slave_; -}; - -// Master to slave sanity test. -TEST_F(PtyTest, WriteMasterToSlave) { - // N.B. by default, the slave reads nothing until the master writes a newline. - constexpr char kBuf[] = "hello\n"; - - EXPECT_THAT(WriteFd(master_.get(), kBuf, sizeof(kBuf) - 1), - SyscallSucceedsWithValue(sizeof(kBuf) - 1)); - - // Linux moves data from the master to the slave via async work scheduled via - // tty_flip_buffer_push. Since it is asynchronous, the data may not be - // available for reading immediately. Instead we must poll and assert that it - // becomes available "soon". - - char buf[sizeof(kBuf)] = {}; - ExpectReadable(slave_, sizeof(buf) - 1, buf); - - EXPECT_EQ(memcmp(buf, kBuf, sizeof(kBuf)), 0); -} - -// Slave to master sanity test. -TEST_F(PtyTest, WriteSlaveToMaster) { - // N.B. by default, the master reads nothing until the slave writes a newline, - // and the master gets a carriage return. - constexpr char kInput[] = "hello\n"; - constexpr char kExpected[] = "hello\r\n"; - - EXPECT_THAT(WriteFd(slave_.get(), kInput, sizeof(kInput) - 1), - SyscallSucceedsWithValue(sizeof(kInput) - 1)); - - // Linux moves data from the master to the slave via async work scheduled via - // tty_flip_buffer_push. Since it is asynchronous, the data may not be - // available for reading immediately. Instead we must poll and assert that it - // becomes available "soon". - - char buf[sizeof(kExpected)] = {}; - ExpectReadable(master_, sizeof(buf) - 1, buf); - - EXPECT_EQ(memcmp(buf, kExpected, sizeof(kExpected)), 0); -} - -TEST_F(PtyTest, WriteInvalidUTF8) { - char c = 0xff; - ASSERT_THAT(syscall(__NR_write, master_.get(), &c, sizeof(c)), - SyscallSucceedsWithValue(sizeof(c))); -} - -// Both the master and slave report the standard default termios settings. -// -// Note that TCGETS on the master actually redirects to the slave (see comment -// on MasterTermiosUnchangable). -TEST_F(PtyTest, DefaultTermios) { - struct kernel_termios t = {}; - EXPECT_THAT(ioctl(slave_.get(), TCGETS, &t), SyscallSucceeds()); - EXPECT_EQ(t, DefaultTermios()); - - EXPECT_THAT(ioctl(master_.get(), TCGETS, &t), SyscallSucceeds()); - EXPECT_EQ(t, DefaultTermios()); -} - -// Changing termios from the master actually affects the slave. -// -// TCSETS on the master actually redirects to the slave (see comment on -// MasterTermiosUnchangable). -TEST_F(PtyTest, TermiosAffectsSlave) { - struct kernel_termios master_termios = {}; - EXPECT_THAT(ioctl(master_.get(), TCGETS, &master_termios), SyscallSucceeds()); - master_termios.c_lflag ^= ICANON; - EXPECT_THAT(ioctl(master_.get(), TCSETS, &master_termios), SyscallSucceeds()); - - struct kernel_termios slave_termios = {}; - EXPECT_THAT(ioctl(slave_.get(), TCGETS, &slave_termios), SyscallSucceeds()); - EXPECT_EQ(master_termios, slave_termios); -} - -// The master end of the pty has termios: -// -// struct kernel_termios t = { -// .c_iflag = 0; -// .c_oflag = 0; -// .c_cflag = B38400 | CS8 | CREAD; -// .c_lflag = 0; -// .c_cc = /* same as DefaultTermios */ -// } -// -// (From drivers/tty/pty.c:unix98_pty_init) -// -// All termios control ioctls on the master actually redirect to the slave -// (drivers/tty/tty_ioctl.c:tty_mode_ioctl), making it impossible to change the -// master termios. -// -// Verify this by setting ICRNL (which rewrites input \r to \n) and verify that -// it has no effect on the master. -TEST_F(PtyTest, MasterTermiosUnchangable) { - char c = '\r'; - ASSERT_THAT(WriteFd(slave_.get(), &c, 1), SyscallSucceedsWithValue(1)); - - ExpectReadable(master_, 1, &c); - EXPECT_EQ(c, '\r'); // ICRNL had no effect! - - ExpectFinished(master_); -} - -// ICRNL rewrites input \r to \n. -TEST_F(PtyTest, TermiosICRNL) { - struct kernel_termios t = DefaultTermios(); - t.c_iflag |= ICRNL; - t.c_lflag &= ~ICANON; // for byte-by-byte reading. - ASSERT_THAT(ioctl(slave_.get(), TCSETS, &t), SyscallSucceeds()); - - char c = '\r'; - ASSERT_THAT(WriteFd(master_.get(), &c, 1), SyscallSucceedsWithValue(1)); - - ExpectReadable(slave_, 1, &c); - EXPECT_EQ(c, '\n'); - - ExpectFinished(slave_); -} - -// ONLCR rewrites output \n to \r\n. -TEST_F(PtyTest, TermiosONLCR) { - struct kernel_termios t = DefaultTermios(); - t.c_oflag |= ONLCR; - t.c_lflag &= ~ICANON; // for byte-by-byte reading. - ASSERT_THAT(ioctl(slave_.get(), TCSETS, &t), SyscallSucceeds()); - - char c = '\n'; - ASSERT_THAT(WriteFd(slave_.get(), &c, 1), SyscallSucceedsWithValue(1)); - - // Extra byte for NUL for EXPECT_STREQ. - char buf[3] = {}; - ExpectReadable(master_, 2, buf); - EXPECT_STREQ(buf, "\r\n"); - - ExpectFinished(slave_); -} - -TEST_F(PtyTest, TermiosIGNCR) { - struct kernel_termios t = DefaultTermios(); - t.c_iflag |= IGNCR; - t.c_lflag &= ~ICANON; // for byte-by-byte reading. - ASSERT_THAT(ioctl(slave_.get(), TCSETS, &t), SyscallSucceeds()); - - char c = '\r'; - ASSERT_THAT(WriteFd(master_.get(), &c, 1), SyscallSucceedsWithValue(1)); - - // Nothing to read. - ASSERT_THAT(PollAndReadFd(slave_.get(), &c, 1, kTimeout), - PosixErrorIs(ETIMEDOUT, ::testing::StrEq("Poll timed out"))); -} - -// Test that we can successfully poll for readable data from the slave. -TEST_F(PtyTest, TermiosPollSlave) { - struct kernel_termios t = DefaultTermios(); - t.c_iflag |= IGNCR; - t.c_lflag &= ~ICANON; // for byte-by-byte reading. - ASSERT_THAT(ioctl(slave_.get(), TCSETS, &t), SyscallSucceeds()); - - absl::Notification notify; - int sfd = slave_.get(); - ScopedThread th([sfd, ¬ify]() { - notify.Notify(); - - // Poll on the reader fd with POLLIN event. - struct pollfd poll_fd = {sfd, POLLIN, 0}; - EXPECT_THAT( - RetryEINTR(poll)(&poll_fd, 1, absl::ToInt64Milliseconds(kTimeout)), - SyscallSucceedsWithValue(1)); - - // Should trigger POLLIN event. - EXPECT_EQ(poll_fd.revents & POLLIN, POLLIN); - }); - - notify.WaitForNotification(); - // Sleep ensures that poll begins waiting before we write to the FD. - absl::SleepFor(absl::Seconds(1)); - - char s[] = "foo\n"; - ASSERT_THAT(WriteFd(master_.get(), s, strlen(s) + 1), SyscallSucceeds()); -} - -// Test that we can successfully poll for readable data from the master. -TEST_F(PtyTest, TermiosPollMaster) { - struct kernel_termios t = DefaultTermios(); - t.c_iflag |= IGNCR; - t.c_lflag &= ~ICANON; // for byte-by-byte reading. - ASSERT_THAT(ioctl(master_.get(), TCSETS, &t), SyscallSucceeds()); - - absl::Notification notify; - int mfd = master_.get(); - ScopedThread th([mfd, ¬ify]() { - notify.Notify(); - - // Poll on the reader fd with POLLIN event. - struct pollfd poll_fd = {mfd, POLLIN, 0}; - EXPECT_THAT( - RetryEINTR(poll)(&poll_fd, 1, absl::ToInt64Milliseconds(kTimeout)), - SyscallSucceedsWithValue(1)); - - // Should trigger POLLIN event. - EXPECT_EQ(poll_fd.revents & POLLIN, POLLIN); - }); - - notify.WaitForNotification(); - // Sleep ensures that poll begins waiting before we write to the FD. - absl::SleepFor(absl::Seconds(1)); - - char s[] = "foo\n"; - ASSERT_THAT(WriteFd(slave_.get(), s, strlen(s) + 1), SyscallSucceeds()); -} - -TEST_F(PtyTest, TermiosINLCR) { - struct kernel_termios t = DefaultTermios(); - t.c_iflag |= INLCR; - t.c_lflag &= ~ICANON; // for byte-by-byte reading. - ASSERT_THAT(ioctl(slave_.get(), TCSETS, &t), SyscallSucceeds()); - - char c = '\n'; - ASSERT_THAT(WriteFd(master_.get(), &c, 1), SyscallSucceedsWithValue(1)); - - ExpectReadable(slave_, 1, &c); - EXPECT_EQ(c, '\r'); - - ExpectFinished(slave_); -} - -TEST_F(PtyTest, TermiosONOCR) { - struct kernel_termios t = DefaultTermios(); - t.c_oflag |= ONOCR; - t.c_lflag &= ~ICANON; // for byte-by-byte reading. - ASSERT_THAT(ioctl(slave_.get(), TCSETS, &t), SyscallSucceeds()); - - // The terminal is at column 0, so there should be no CR to read. - char c = '\r'; - ASSERT_THAT(WriteFd(slave_.get(), &c, 1), SyscallSucceedsWithValue(1)); - - // Nothing to read. - ASSERT_THAT(PollAndReadFd(master_.get(), &c, 1, kTimeout), - PosixErrorIs(ETIMEDOUT, ::testing::StrEq("Poll timed out"))); - - // This time the column is greater than 0, so we should be able to read the CR - // out of the other end. - constexpr char kInput[] = "foo\r"; - constexpr int kInputSize = sizeof(kInput) - 1; - ASSERT_THAT(WriteFd(slave_.get(), kInput, kInputSize), - SyscallSucceedsWithValue(kInputSize)); - - char buf[kInputSize] = {}; - ExpectReadable(master_, kInputSize, buf); - - EXPECT_EQ(memcmp(buf, kInput, kInputSize), 0); - - ExpectFinished(master_); - - // Terminal should be at column 0 again, so no CR can be read. - ASSERT_THAT(WriteFd(slave_.get(), &c, 1), SyscallSucceedsWithValue(1)); - - // Nothing to read. - ASSERT_THAT(PollAndReadFd(master_.get(), &c, 1, kTimeout), - PosixErrorIs(ETIMEDOUT, ::testing::StrEq("Poll timed out"))); -} - -TEST_F(PtyTest, TermiosOCRNL) { - struct kernel_termios t = DefaultTermios(); - t.c_oflag |= OCRNL; - t.c_lflag &= ~ICANON; // for byte-by-byte reading. - ASSERT_THAT(ioctl(slave_.get(), TCSETS, &t), SyscallSucceeds()); - - // The terminal is at column 0, so there should be no CR to read. - char c = '\r'; - ASSERT_THAT(WriteFd(slave_.get(), &c, 1), SyscallSucceedsWithValue(1)); - - ExpectReadable(master_, 1, &c); - EXPECT_EQ(c, '\n'); - - ExpectFinished(master_); -} - -// Tests that VEOL is disabled when we start, and that we can set it to enable -// it. -TEST_F(PtyTest, VEOLTermination) { - // Write a few bytes ending with '\0', and confirm that we can't read. - constexpr char kInput[] = "hello"; - ASSERT_THAT(WriteFd(master_.get(), kInput, sizeof(kInput)), - SyscallSucceedsWithValue(sizeof(kInput))); - char buf[sizeof(kInput)] = {}; - ASSERT_THAT(PollAndReadFd(slave_.get(), buf, sizeof(kInput), kTimeout), - PosixErrorIs(ETIMEDOUT, ::testing::StrEq("Poll timed out"))); - - // Set the EOL character to '=' and write it. - constexpr char delim = '='; - struct kernel_termios t = DefaultTermios(); - t.c_cc[VEOL] = delim; - ASSERT_THAT(ioctl(slave_.get(), TCSETS, &t), SyscallSucceeds()); - ASSERT_THAT(WriteFd(master_.get(), &delim, 1), SyscallSucceedsWithValue(1)); - - // Now we can read, as sending EOL caused the line to become available. - ExpectReadable(slave_, sizeof(kInput), buf); - EXPECT_EQ(memcmp(buf, kInput, sizeof(kInput)), 0); - - ExpectReadable(slave_, 1, buf); - EXPECT_EQ(buf[0], '='); - - ExpectFinished(slave_); -} - -// Tests that we can write more than the 4096 character limit, then a -// terminating character, then read out just the first 4095 bytes plus the -// terminator. -TEST_F(PtyTest, CanonBigWrite) { - constexpr int kWriteLen = kMaxLineSize + 4; - char input[kWriteLen]; - memset(input, 'M', kWriteLen - 1); - input[kWriteLen - 1] = '\n'; - ASSERT_THAT(WriteFd(master_.get(), input, kWriteLen), - SyscallSucceedsWithValue(kWriteLen)); - - // We can read the line. - char buf[kMaxLineSize] = {}; - ExpectReadable(slave_, kMaxLineSize, buf); - - ExpectFinished(slave_); -} - -// Tests that data written in canonical mode can be read immediately once -// switched to noncanonical mode. -TEST_F(PtyTest, SwitchCanonToNoncanon) { - // Write a few bytes without a terminating character, switch to noncanonical - // mode, and read them. - constexpr char kInput[] = "hello"; - ASSERT_THAT(WriteFd(master_.get(), kInput, sizeof(kInput)), - SyscallSucceedsWithValue(sizeof(kInput))); - - // Nothing available yet. - char buf[sizeof(kInput)] = {}; - ASSERT_THAT(PollAndReadFd(slave_.get(), buf, sizeof(kInput), kTimeout), - PosixErrorIs(ETIMEDOUT, ::testing::StrEq("Poll timed out"))); - - DisableCanonical(); - - ExpectReadable(slave_, sizeof(kInput), buf); - EXPECT_STREQ(buf, kInput); - - ExpectFinished(slave_); -} - -TEST_F(PtyTest, SwitchCanonToNonCanonNewline) { - // Write a few bytes with a terminating character. - constexpr char kInput[] = "hello\n"; - ASSERT_THAT(WriteFd(master_.get(), kInput, sizeof(kInput)), - SyscallSucceedsWithValue(sizeof(kInput))); - - DisableCanonical(); - - // We can read the line. - char buf[sizeof(kInput)] = {}; - ExpectReadable(slave_, sizeof(kInput), buf); - EXPECT_STREQ(buf, kInput); - - ExpectFinished(slave_); -} - -TEST_F(PtyTest, SwitchNoncanonToCanonNewlineBig) { - DisableCanonical(); - - // Write more than the maximum line size, then write a delimiter. - constexpr int kWriteLen = 4100; - char input[kWriteLen]; - memset(input, 'M', kWriteLen); - ASSERT_THAT(WriteFd(master_.get(), input, kWriteLen), - SyscallSucceedsWithValue(kWriteLen)); - // Wait for the input queue to fill. - ASSERT_NO_ERRNO(WaitUntilReceived(slave_.get(), kMaxLineSize - 1)); - constexpr char delim = '\n'; - ASSERT_THAT(WriteFd(master_.get(), &delim, 1), SyscallSucceedsWithValue(1)); - - EnableCanonical(); - - // We can read the line. - char buf[kMaxLineSize] = {}; - ExpectReadable(slave_, kMaxLineSize - 1, buf); - - // We can also read the remaining characters. - ExpectReadable(slave_, 6, buf); - - ExpectFinished(slave_); -} - -TEST_F(PtyTest, SwitchNoncanonToCanonNoNewline) { - DisableCanonical(); - - // Write a few bytes without a terminating character. - // mode, and read them. - constexpr char kInput[] = "hello"; - ASSERT_THAT(WriteFd(master_.get(), kInput, sizeof(kInput) - 1), - SyscallSucceedsWithValue(sizeof(kInput) - 1)); - - ASSERT_NO_ERRNO(WaitUntilReceived(slave_.get(), sizeof(kInput) - 1)); - EnableCanonical(); - - // We can read the line. - char buf[sizeof(kInput)] = {}; - ExpectReadable(slave_, sizeof(kInput) - 1, buf); - EXPECT_STREQ(buf, kInput); - - ExpectFinished(slave_); -} - -TEST_F(PtyTest, SwitchNoncanonToCanonNoNewlineBig) { - DisableCanonical(); - - // Write a few bytes without a terminating character. - // mode, and read them. - constexpr int kWriteLen = 4100; - char input[kWriteLen]; - memset(input, 'M', kWriteLen); - ASSERT_THAT(WriteFd(master_.get(), input, kWriteLen), - SyscallSucceedsWithValue(kWriteLen)); - - ASSERT_NO_ERRNO(WaitUntilReceived(slave_.get(), kMaxLineSize - 1)); - EnableCanonical(); - - // We can read the line. - char buf[kMaxLineSize] = {}; - ExpectReadable(slave_, kMaxLineSize - 1, buf); - - ExpectFinished(slave_); -} - -// Tests that we can write over the 4095 noncanonical limit, then read out -// everything. -TEST_F(PtyTest, NoncanonBigWrite) { - DisableCanonical(); - - // Write well over the 4095 internal buffer limit. - constexpr char kInput = 'M'; - constexpr int kInputSize = kMaxLineSize * 2; - for (int i = 0; i < kInputSize; i++) { - // This makes too many syscalls for save/restore. - const DisableSave ds; - ASSERT_THAT(WriteFd(master_.get(), &kInput, sizeof(kInput)), - SyscallSucceedsWithValue(sizeof(kInput))); - } - - // We should be able to read out everything. Sleep a bit so that Linux has a - // chance to move data from the master to the slave. - ASSERT_NO_ERRNO(WaitUntilReceived(slave_.get(), kMaxLineSize - 1)); - for (int i = 0; i < kInputSize; i++) { - // This makes too many syscalls for save/restore. - const DisableSave ds; - char c; - ExpectReadable(slave_, 1, &c); - ASSERT_EQ(c, kInput); - } - - ExpectFinished(slave_); -} - -// ICANON doesn't make input available until a line delimiter is typed. -// -// Test newline. -TEST_F(PtyTest, TermiosICANONNewline) { - char input[3] = {'a', 'b', 'c'}; - ASSERT_THAT(WriteFd(master_.get(), input, sizeof(input)), - SyscallSucceedsWithValue(sizeof(input))); - - // Extra bytes for newline (written later) and NUL for EXPECT_STREQ. - char buf[5] = {}; - - // Nothing available yet. - ASSERT_THAT(PollAndReadFd(slave_.get(), buf, sizeof(input), kTimeout), - PosixErrorIs(ETIMEDOUT, ::testing::StrEq("Poll timed out"))); - - char delim = '\n'; - ASSERT_THAT(WriteFd(master_.get(), &delim, 1), SyscallSucceedsWithValue(1)); - - // Now it is available. - ASSERT_NO_ERRNO(WaitUntilReceived(slave_.get(), sizeof(input) + 1)); - ExpectReadable(slave_, sizeof(input) + 1, buf); - EXPECT_STREQ(buf, "abc\n"); - - ExpectFinished(slave_); -} - -// ICANON doesn't make input available until a line delimiter is typed. -// -// Test EOF (^D). -TEST_F(PtyTest, TermiosICANONEOF) { - char input[3] = {'a', 'b', 'c'}; - ASSERT_THAT(WriteFd(master_.get(), input, sizeof(input)), - SyscallSucceedsWithValue(sizeof(input))); - - // Extra byte for NUL for EXPECT_STREQ. - char buf[4] = {}; - - // Nothing available yet. - ASSERT_THAT(PollAndReadFd(slave_.get(), buf, sizeof(input), kTimeout), - PosixErrorIs(ETIMEDOUT, ::testing::StrEq("Poll timed out"))); - char delim = ControlCharacter('D'); - ASSERT_THAT(WriteFd(master_.get(), &delim, 1), SyscallSucceedsWithValue(1)); - - // Now it is available. Note that ^D is not included. - ExpectReadable(slave_, sizeof(input), buf); - EXPECT_STREQ(buf, "abc"); - - ExpectFinished(slave_); -} - -// ICANON limits us to 4096 bytes including a terminating character. Anything -// after and 4095th character is discarded (although still processed for -// signals and echoing). -TEST_F(PtyTest, CanonDiscard) { - constexpr char kInput = 'M'; - constexpr int kInputSize = 4100; - constexpr int kIter = 3; - - // A few times write more than the 4096 character maximum, then a newline. - constexpr char delim = '\n'; - for (int i = 0; i < kIter; i++) { - // This makes too many syscalls for save/restore. - const DisableSave ds; - for (int i = 0; i < kInputSize; i++) { - ASSERT_THAT(WriteFd(master_.get(), &kInput, sizeof(kInput)), - SyscallSucceedsWithValue(sizeof(kInput))); - } - ASSERT_THAT(WriteFd(master_.get(), &delim, 1), SyscallSucceedsWithValue(1)); - } - - // There should be multiple truncated lines available to read. - for (int i = 0; i < kIter; i++) { - char buf[kInputSize] = {}; - ExpectReadable(slave_, kMaxLineSize, buf); - EXPECT_EQ(buf[kMaxLineSize - 1], delim); - EXPECT_EQ(buf[kMaxLineSize - 2], kInput); - } - - ExpectFinished(slave_); -} - -TEST_F(PtyTest, CanonMultiline) { - constexpr char kInput1[] = "GO\n"; - constexpr char kInput2[] = "BLUE\n"; - - // Write both lines. - ASSERT_THAT(WriteFd(master_.get(), kInput1, sizeof(kInput1) - 1), - SyscallSucceedsWithValue(sizeof(kInput1) - 1)); - ASSERT_THAT(WriteFd(master_.get(), kInput2, sizeof(kInput2) - 1), - SyscallSucceedsWithValue(sizeof(kInput2) - 1)); - - // Get the first line. - char line1[8] = {}; - ExpectReadable(slave_, sizeof(kInput1) - 1, line1); - EXPECT_STREQ(line1, kInput1); - - // Get the second line. - char line2[8] = {}; - ExpectReadable(slave_, sizeof(kInput2) - 1, line2); - EXPECT_STREQ(line2, kInput2); - - ExpectFinished(slave_); -} - -TEST_F(PtyTest, SwitchNoncanonToCanonMultiline) { - DisableCanonical(); - - constexpr char kInput1[] = "GO\n"; - constexpr char kInput2[] = "BLUE\n"; - constexpr char kExpected[] = "GO\nBLUE\n"; - - // Write both lines. - ASSERT_THAT(WriteFd(master_.get(), kInput1, sizeof(kInput1) - 1), - SyscallSucceedsWithValue(sizeof(kInput1) - 1)); - ASSERT_THAT(WriteFd(master_.get(), kInput2, sizeof(kInput2) - 1), - SyscallSucceedsWithValue(sizeof(kInput2) - 1)); - - ASSERT_NO_ERRNO( - WaitUntilReceived(slave_.get(), sizeof(kInput1) + sizeof(kInput2) - 2)); - EnableCanonical(); - - // Get all together as one line. - char line[9] = {}; - ExpectReadable(slave_, 8, line); - EXPECT_STREQ(line, kExpected); - - ExpectFinished(slave_); -} - -TEST_F(PtyTest, SwitchTwiceMultiline) { - std::string kInputs[] = {"GO\n", "BLUE\n", "!"}; - std::string kExpected = "GO\nBLUE\n!"; - - // Write each line. - for (std::string input : kInputs) { - ASSERT_THAT(WriteFd(master_.get(), input.c_str(), input.size()), - SyscallSucceedsWithValue(input.size())); - } - - DisableCanonical(); - // All written characters have to make it into the input queue before - // canonical mode is re-enabled. If the final '!' character hasn't been - // enqueued before canonical mode is re-enabled, it won't be readable. - ASSERT_NO_ERRNO(WaitUntilReceived(slave_.get(), kExpected.size())); - EnableCanonical(); - - // Get all together as one line. - char line[10] = {}; - ExpectReadable(slave_, 9, line); - EXPECT_STREQ(line, kExpected.c_str()); - - ExpectFinished(slave_); -} - -TEST_F(PtyTest, QueueSize) { - // Write the line. - constexpr char kInput1[] = "GO\n"; - ASSERT_THAT(WriteFd(master_.get(), kInput1, sizeof(kInput1) - 1), - SyscallSucceedsWithValue(sizeof(kInput1) - 1)); - ASSERT_NO_ERRNO(WaitUntilReceived(slave_.get(), sizeof(kInput1) - 1)); - - // Ensure that writing more (beyond what is readable) does not impact the - // readable size. - char input[kMaxLineSize]; - memset(input, 'M', kMaxLineSize); - ASSERT_THAT(WriteFd(master_.get(), input, kMaxLineSize), - SyscallSucceedsWithValue(kMaxLineSize)); - int inputBufSize = ASSERT_NO_ERRNO_AND_VALUE( - WaitUntilReceived(slave_.get(), sizeof(kInput1) - 1)); - EXPECT_EQ(inputBufSize, sizeof(kInput1) - 1); -} - -TEST_F(PtyTest, PartialBadBuffer) { - // Allocate 2 pages. - void* addr = mmap(nullptr, 2 * kPageSize, PROT_READ | PROT_WRITE, - MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); - ASSERT_NE(addr, MAP_FAILED); - char* buf = reinterpret_cast<char*>(addr); - - // Guard the 2nd page for our read to run into. - ASSERT_THAT( - mprotect(reinterpret_cast<void*>(buf + kPageSize), kPageSize, PROT_NONE), - SyscallSucceeds()); - - // Leave only one free byte in the buffer. - char* bad_buffer = buf + kPageSize - 1; - - // Write to the master. - constexpr char kBuf[] = "hello\n"; - constexpr size_t size = sizeof(kBuf) - 1; - EXPECT_THAT(WriteFd(master_.get(), kBuf, size), - SyscallSucceedsWithValue(size)); - - // Read from the slave into bad_buffer. - ASSERT_NO_ERRNO(WaitUntilReceived(slave_.get(), size)); - EXPECT_THAT(ReadFd(slave_.get(), bad_buffer, size), - SyscallFailsWithErrno(EFAULT)); - - EXPECT_THAT(munmap(addr, 2 * kPageSize), SyscallSucceeds()) << addr; -} - -TEST_F(PtyTest, SimpleEcho) { - constexpr char kInput[] = "Mr. Eko"; - EXPECT_THAT(WriteFd(master_.get(), kInput, strlen(kInput)), - SyscallSucceedsWithValue(strlen(kInput))); - - char buf[100] = {}; - ExpectReadable(master_, strlen(kInput), buf); - - EXPECT_STREQ(buf, kInput); - ExpectFinished(master_); -} - -TEST_F(PtyTest, GetWindowSize) { - struct winsize ws; - ASSERT_THAT(ioctl(slave_.get(), TIOCGWINSZ, &ws), SyscallSucceeds()); - EXPECT_EQ(ws.ws_row, 0); - EXPECT_EQ(ws.ws_col, 0); -} - -TEST_F(PtyTest, SetSlaveWindowSize) { - constexpr uint16_t kRows = 343; - constexpr uint16_t kCols = 2401; - struct winsize ws = {.ws_row = kRows, .ws_col = kCols}; - ASSERT_THAT(ioctl(slave_.get(), TIOCSWINSZ, &ws), SyscallSucceeds()); - - struct winsize retrieved_ws = {}; - ASSERT_THAT(ioctl(master_.get(), TIOCGWINSZ, &retrieved_ws), - SyscallSucceeds()); - EXPECT_EQ(retrieved_ws.ws_row, kRows); - EXPECT_EQ(retrieved_ws.ws_col, kCols); -} - -TEST_F(PtyTest, SetMasterWindowSize) { - constexpr uint16_t kRows = 343; - constexpr uint16_t kCols = 2401; - struct winsize ws = {.ws_row = kRows, .ws_col = kCols}; - ASSERT_THAT(ioctl(master_.get(), TIOCSWINSZ, &ws), SyscallSucceeds()); - - struct winsize retrieved_ws = {}; - ASSERT_THAT(ioctl(slave_.get(), TIOCGWINSZ, &retrieved_ws), - SyscallSucceeds()); - EXPECT_EQ(retrieved_ws.ws_row, kRows); - EXPECT_EQ(retrieved_ws.ws_col, kCols); -} - -class JobControlTest : public ::testing::Test { - protected: - void SetUp() override { - master_ = ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/ptmx", O_RDWR | O_NONBLOCK)); - slave_ = ASSERT_NO_ERRNO_AND_VALUE(OpenSlave(master_)); - - // Make this a session leader, which also drops the controlling terminal. - // In the gVisor test environment, this test will be run as the session - // leader already (as the sentry init process). - if (!IsRunningOnGvisor()) { - ASSERT_THAT(setsid(), SyscallSucceeds()); - } - } - - // Master and slave ends of the PTY. Non-blocking. - FileDescriptor master_; - FileDescriptor slave_; -}; - -TEST_F(JobControlTest, SetTTYMaster) { - ASSERT_THAT(ioctl(master_.get(), TIOCSCTTY, 0), SyscallSucceeds()); -} - -TEST_F(JobControlTest, SetTTY) { - ASSERT_THAT(ioctl(slave_.get(), TIOCSCTTY, 0), SyscallSucceeds()); -} - -TEST_F(JobControlTest, SetTTYNonLeader) { - // Fork a process that won't be the session leader. - pid_t child = fork(); - if (!child) { - // We shouldn't be able to set the terminal. - TEST_PCHECK(ioctl(slave_.get(), TIOCSCTTY, 0)); - _exit(0); - } - - int wstatus; - ASSERT_THAT(waitpid(child, &wstatus, 0), SyscallSucceedsWithValue(child)); - ASSERT_EQ(wstatus, 0); -} - -TEST_F(JobControlTest, SetTTYBadArg) { - // Despite the man page saying arg should be 0 here, Linux doesn't actually - // check. - ASSERT_THAT(ioctl(slave_.get(), TIOCSCTTY, 1), SyscallSucceeds()); -} - -TEST_F(JobControlTest, SetTTYDifferentSession) { - SKIP_IF(ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_ADMIN))); - - ASSERT_THAT(ioctl(slave_.get(), TIOCSCTTY, 0), SyscallSucceeds()); - - // Fork, join a new session, and try to steal the parent's controlling - // terminal, which should fail. - pid_t child = fork(); - if (!child) { - TEST_PCHECK(setsid() >= 0); - // We shouldn't be able to steal the terminal. - TEST_PCHECK(ioctl(slave_.get(), TIOCSCTTY, 1)); - _exit(0); - } - - int wstatus; - ASSERT_THAT(waitpid(child, &wstatus, 0), SyscallSucceedsWithValue(child)); - ASSERT_EQ(wstatus, 0); -} - -TEST_F(JobControlTest, ReleaseTTY) { - ASSERT_THAT(ioctl(slave_.get(), TIOCSCTTY, 0), SyscallSucceeds()); - - // Make sure we're ignoring SIGHUP, which will be sent to this process once we - // disconnect they TTY. - struct sigaction sa = {}; - sa.sa_handler = SIG_IGN; - sa.sa_flags = 0; - sigemptyset(&sa.sa_mask); - struct sigaction old_sa; - EXPECT_THAT(sigaction(SIGHUP, &sa, &old_sa), SyscallSucceeds()); - EXPECT_THAT(ioctl(slave_.get(), TIOCNOTTY), SyscallSucceeds()); - EXPECT_THAT(sigaction(SIGHUP, &old_sa, NULL), SyscallSucceeds()); -} - -TEST_F(JobControlTest, ReleaseUnsetTTY) { - ASSERT_THAT(ioctl(slave_.get(), TIOCNOTTY), SyscallFailsWithErrno(ENOTTY)); -} - -TEST_F(JobControlTest, ReleaseWrongTTY) { - ASSERT_THAT(ioctl(slave_.get(), TIOCSCTTY, 0), SyscallSucceeds()); - - ASSERT_THAT(ioctl(master_.get(), TIOCNOTTY), SyscallFailsWithErrno(ENOTTY)); -} - -TEST_F(JobControlTest, ReleaseTTYNonLeader) { - ASSERT_THAT(ioctl(slave_.get(), TIOCSCTTY, 0), SyscallSucceeds()); - - pid_t child = fork(); - if (!child) { - TEST_PCHECK(!ioctl(slave_.get(), TIOCNOTTY)); - _exit(0); - } - - int wstatus; - ASSERT_THAT(waitpid(child, &wstatus, 0), SyscallSucceedsWithValue(child)); - ASSERT_EQ(wstatus, 0); -} - -TEST_F(JobControlTest, ReleaseTTYDifferentSession) { - ASSERT_THAT(ioctl(slave_.get(), TIOCSCTTY, 0), SyscallSucceeds()); - - pid_t child = fork(); - if (!child) { - // Join a new session, then try to disconnect. - TEST_PCHECK(setsid() >= 0); - TEST_PCHECK(ioctl(slave_.get(), TIOCNOTTY)); - _exit(0); - } - - int wstatus; - ASSERT_THAT(waitpid(child, &wstatus, 0), SyscallSucceedsWithValue(child)); - ASSERT_EQ(wstatus, 0); -} - -// Used by the child process spawned in ReleaseTTYSignals to track received -// signals. -static int received; - -void sig_handler(int signum) { received |= signum; } - -// When the session leader releases its controlling terminal, the foreground -// process group gets SIGHUP, then SIGCONT. This test: -// - Spawns 2 threads -// - Has thread 1 return 0 if it gets both SIGHUP and SIGCONT -// - Has thread 2 leave the foreground process group, and return non-zero if it -// receives any signals. -// - Has the parent thread release its controlling terminal -// - Checks that thread 1 got both signals -// - Checks that thread 2 didn't get any signals. -TEST_F(JobControlTest, ReleaseTTYSignals) { - ASSERT_THAT(ioctl(slave_.get(), TIOCSCTTY, 0), SyscallSucceeds()); - - received = 0; - struct sigaction sa = {}; - sa.sa_handler = sig_handler; - sa.sa_flags = 0; - sigemptyset(&sa.sa_mask); - sigaddset(&sa.sa_mask, SIGHUP); - sigaddset(&sa.sa_mask, SIGCONT); - sigprocmask(SIG_BLOCK, &sa.sa_mask, NULL); - - pid_t same_pgrp_child = fork(); - if (!same_pgrp_child) { - // The child will wait for SIGHUP and SIGCONT, then return 0. It begins with - // SIGHUP and SIGCONT blocked. We install signal handlers for those signals, - // then use sigsuspend to wait for those specific signals. - TEST_PCHECK(!sigaction(SIGHUP, &sa, NULL)); - TEST_PCHECK(!sigaction(SIGCONT, &sa, NULL)); - sigset_t mask; - sigfillset(&mask); - sigdelset(&mask, SIGHUP); - sigdelset(&mask, SIGCONT); - while (received != (SIGHUP | SIGCONT)) { - sigsuspend(&mask); - } - _exit(0); - } - - // We don't want to block these anymore. - sigprocmask(SIG_UNBLOCK, &sa.sa_mask, NULL); - - // This child will return non-zero if either SIGHUP or SIGCONT are received. - pid_t diff_pgrp_child = fork(); - if (!diff_pgrp_child) { - TEST_PCHECK(!setpgid(0, 0)); - TEST_PCHECK(pause()); - _exit(1); - } - - EXPECT_THAT(setpgid(diff_pgrp_child, diff_pgrp_child), SyscallSucceeds()); - - // Make sure we're ignoring SIGHUP, which will be sent to this process once we - // disconnect they TTY. - struct sigaction sighup_sa = {}; - sighup_sa.sa_handler = SIG_IGN; - sighup_sa.sa_flags = 0; - sigemptyset(&sighup_sa.sa_mask); - struct sigaction old_sa; - EXPECT_THAT(sigaction(SIGHUP, &sighup_sa, &old_sa), SyscallSucceeds()); - - // Release the controlling terminal, sending SIGHUP and SIGCONT to all other - // processes in this process group. - EXPECT_THAT(ioctl(slave_.get(), TIOCNOTTY), SyscallSucceeds()); - - EXPECT_THAT(sigaction(SIGHUP, &old_sa, NULL), SyscallSucceeds()); - - // The child in the same process group will get signaled. - int wstatus; - EXPECT_THAT(waitpid(same_pgrp_child, &wstatus, 0), - SyscallSucceedsWithValue(same_pgrp_child)); - EXPECT_EQ(wstatus, 0); - - // The other child will not get signaled. - EXPECT_THAT(waitpid(diff_pgrp_child, &wstatus, WNOHANG), - SyscallSucceedsWithValue(0)); - EXPECT_THAT(kill(diff_pgrp_child, SIGKILL), SyscallSucceeds()); -} - -TEST_F(JobControlTest, GetForegroundProcessGroup) { - ASSERT_THAT(ioctl(slave_.get(), TIOCSCTTY, 0), SyscallSucceeds()); - pid_t foreground_pgid; - pid_t pid; - ASSERT_THAT(ioctl(slave_.get(), TIOCGPGRP, &foreground_pgid), - SyscallSucceeds()); - ASSERT_THAT(pid = getpid(), SyscallSucceeds()); - - ASSERT_EQ(foreground_pgid, pid); -} - -TEST_F(JobControlTest, GetForegroundProcessGroupNonControlling) { - // At this point there's no controlling terminal, so TIOCGPGRP should fail. - pid_t foreground_pgid; - ASSERT_THAT(ioctl(slave_.get(), TIOCGPGRP, &foreground_pgid), - SyscallFailsWithErrno(ENOTTY)); -} - -// This test: -// - sets itself as the foreground process group -// - creates a child process in a new process group -// - sets that child as the foreground process group -// - kills its child and sets itself as the foreground process group. -TEST_F(JobControlTest, SetForegroundProcessGroup) { - ASSERT_THAT(ioctl(slave_.get(), TIOCSCTTY, 0), SyscallSucceeds()); - - // Ignore SIGTTOU so that we don't stop ourself when calling tcsetpgrp. - struct sigaction sa = {}; - sa.sa_handler = SIG_IGN; - sa.sa_flags = 0; - sigemptyset(&sa.sa_mask); - sigaction(SIGTTOU, &sa, NULL); - - // Set ourself as the foreground process group. - ASSERT_THAT(tcsetpgrp(slave_.get(), getpgid(0)), SyscallSucceeds()); - - // Create a new process that just waits to be signaled. - pid_t child = fork(); - if (!child) { - TEST_PCHECK(!pause()); - // We should never reach this. - _exit(1); - } - - // Make the child its own process group, then make it the controlling process - // group of the terminal. - ASSERT_THAT(setpgid(child, child), SyscallSucceeds()); - ASSERT_THAT(tcsetpgrp(slave_.get(), child), SyscallSucceeds()); - - // Sanity check - we're still the controlling session. - ASSERT_EQ(getsid(0), getsid(child)); - - // Signal the child, wait for it to exit, then retake the terminal. - ASSERT_THAT(kill(child, SIGTERM), SyscallSucceeds()); - int wstatus; - ASSERT_THAT(waitpid(child, &wstatus, 0), SyscallSucceedsWithValue(child)); - ASSERT_TRUE(WIFSIGNALED(wstatus)); - ASSERT_EQ(WTERMSIG(wstatus), SIGTERM); - - // Set ourself as the foreground process. - pid_t pgid; - ASSERT_THAT(pgid = getpgid(0), SyscallSucceeds()); - ASSERT_THAT(tcsetpgrp(slave_.get(), pgid), SyscallSucceeds()); -} - -TEST_F(JobControlTest, SetForegroundProcessGroupWrongTTY) { - pid_t pid = getpid(); - ASSERT_THAT(ioctl(slave_.get(), TIOCSPGRP, &pid), - SyscallFailsWithErrno(ENOTTY)); -} - -TEST_F(JobControlTest, SetForegroundProcessGroupNegPgid) { - ASSERT_THAT(ioctl(slave_.get(), TIOCSCTTY, 0), SyscallSucceeds()); - - pid_t pid = -1; - ASSERT_THAT(ioctl(slave_.get(), TIOCSPGRP, &pid), - SyscallFailsWithErrno(EINVAL)); -} - -TEST_F(JobControlTest, SetForegroundProcessGroupEmptyProcessGroup) { - ASSERT_THAT(ioctl(slave_.get(), TIOCSCTTY, 0), SyscallSucceeds()); - - // Create a new process, put it in a new process group, make that group the - // foreground process group, then have the process wait. - pid_t child = fork(); - if (!child) { - TEST_PCHECK(!setpgid(0, 0)); - _exit(0); - } - - // Wait for the child to exit. - int wstatus; - EXPECT_THAT(waitpid(child, &wstatus, 0), SyscallSucceedsWithValue(child)); - // The child's process group doesn't exist anymore - this should fail. - ASSERT_THAT(ioctl(slave_.get(), TIOCSPGRP, &child), - SyscallFailsWithErrno(ESRCH)); -} - -TEST_F(JobControlTest, SetForegroundProcessGroupDifferentSession) { - ASSERT_THAT(ioctl(slave_.get(), TIOCSCTTY, 0), SyscallSucceeds()); - - int sync_setsid[2]; - int sync_exit[2]; - ASSERT_THAT(pipe(sync_setsid), SyscallSucceeds()); - ASSERT_THAT(pipe(sync_exit), SyscallSucceeds()); - - // Create a new process and put it in a new session. - pid_t child = fork(); - if (!child) { - TEST_PCHECK(setsid() >= 0); - // Tell the parent we're in a new session. - char c = 'c'; - TEST_PCHECK(WriteFd(sync_setsid[1], &c, 1) == 1); - TEST_PCHECK(ReadFd(sync_exit[0], &c, 1) == 1); - _exit(0); - } - - // Wait for the child to tell us it's in a new session. - char c = 'c'; - ASSERT_THAT(ReadFd(sync_setsid[0], &c, 1), SyscallSucceedsWithValue(1)); - - // Child is in a new session, so we can't make it the foregroup process group. - EXPECT_THAT(ioctl(slave_.get(), TIOCSPGRP, &child), - SyscallFailsWithErrno(EPERM)); - - EXPECT_THAT(WriteFd(sync_exit[1], &c, 1), SyscallSucceedsWithValue(1)); - - int wstatus; - EXPECT_THAT(waitpid(child, &wstatus, 0), SyscallSucceedsWithValue(child)); - EXPECT_TRUE(WIFEXITED(wstatus)); - EXPECT_EQ(WEXITSTATUS(wstatus), 0); -} - -// Verify that we don't hang when creating a new session from an orphaned -// process group (b/139968068). Calling setsid() creates an orphaned process -// group, as process groups that contain the session's leading process are -// orphans. -// -// We create 2 sessions in this test. The init process in gVisor is considered -// not to be an orphan (see sessions.go), so we have to create a session from -// which to create a session. The latter session is being created from an -// orphaned process group. -TEST_F(JobControlTest, OrphanRegression) { - pid_t session_2_leader = fork(); - if (!session_2_leader) { - TEST_PCHECK(setsid() >= 0); - - pid_t session_3_leader = fork(); - if (!session_3_leader) { - TEST_PCHECK(setsid() >= 0); - - _exit(0); - } - - int wstatus; - TEST_PCHECK(waitpid(session_3_leader, &wstatus, 0) == session_3_leader); - TEST_PCHECK(wstatus == 0); - - _exit(0); - } - - int wstatus; - ASSERT_THAT(waitpid(session_2_leader, &wstatus, 0), - SyscallSucceedsWithValue(session_2_leader)); - ASSERT_EQ(wstatus, 0); -} - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/pty_root.cc b/test/syscalls/linux/pty_root.cc deleted file mode 100644 index 14a4af980..000000000 --- a/test/syscalls/linux/pty_root.cc +++ /dev/null @@ -1,68 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <sys/ioctl.h> -#include <termios.h> - -#include "gtest/gtest.h" -#include "absl/base/macros.h" -#include "test/util/capability_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/posix_error.h" -#include "test/util/pty_util.h" - -namespace gvisor { -namespace testing { - -// These tests should be run as root. -namespace { - -TEST(JobControlRootTest, StealTTY) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_ADMIN))); - - // Make this a session leader, which also drops the controlling terminal. - // In the gVisor test environment, this test will be run as the session - // leader already (as the sentry init process). - if (!IsRunningOnGvisor()) { - ASSERT_THAT(setsid(), SyscallSucceeds()); - } - - FileDescriptor master = - ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/ptmx", O_RDWR | O_NONBLOCK)); - FileDescriptor slave = ASSERT_NO_ERRNO_AND_VALUE(OpenSlave(master)); - - // Make slave the controlling terminal. - ASSERT_THAT(ioctl(slave.get(), TIOCSCTTY, 0), SyscallSucceeds()); - - // Fork, join a new session, and try to steal the parent's controlling - // terminal, which should succeed when we have CAP_SYS_ADMIN and pass an arg - // of 1. - pid_t child = fork(); - if (!child) { - ASSERT_THAT(setsid(), SyscallSucceeds()); - // We shouldn't be able to steal the terminal with the wrong arg value. - TEST_PCHECK(ioctl(slave.get(), TIOCSCTTY, 0)); - // We should be able to steal it here. - TEST_PCHECK(!ioctl(slave.get(), TIOCSCTTY, 1)); - _exit(0); - } - - int wstatus; - ASSERT_THAT(waitpid(child, &wstatus, 0), SyscallSucceedsWithValue(child)); - ASSERT_EQ(wstatus, 0); -} - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/pwrite64.cc b/test/syscalls/linux/pwrite64.cc deleted file mode 100644 index b48fe540d..000000000 --- a/test/syscalls/linux/pwrite64.cc +++ /dev/null @@ -1,78 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <fcntl.h> -#include <sys/socket.h> -#include <sys/types.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -// This test is currently very rudimentary. -// -// TODO(edahlgren): -// * bad buffer states (EFAULT). -// * bad fds (wrong permission, wrong type of file, EBADF). -// * check offset is not incremented. -// * check for EOF. -// * writing to pipes, symlinks, special files. -class Pwrite64 : public ::testing::Test { - void SetUp() override { - name_ = NewTempAbsPath(); - int fd; - ASSERT_THAT(fd = open(name_.c_str(), O_CREAT, 0644), SyscallSucceeds()); - EXPECT_THAT(close(fd), SyscallSucceeds()); - } - - void TearDown() override { unlink(name_.c_str()); } - - public: - std::string name_; -}; - -TEST_F(Pwrite64, AppendOnly) { - int fd; - ASSERT_THAT(fd = open(name_.c_str(), O_APPEND | O_RDWR), SyscallSucceeds()); - constexpr int64_t kBufSize = 1024; - std::vector<char> buf(kBufSize); - std::fill(buf.begin(), buf.end(), 'a'); - EXPECT_THAT(PwriteFd(fd, buf.data(), buf.size(), 0), - SyscallSucceedsWithValue(buf.size())); - EXPECT_THAT(lseek(fd, 0, SEEK_CUR), SyscallSucceedsWithValue(0)); - EXPECT_THAT(close(fd), SyscallSucceeds()); -} - -TEST_F(Pwrite64, InvalidArgs) { - int fd; - ASSERT_THAT(fd = open(name_.c_str(), O_APPEND | O_RDWR), SyscallSucceeds()); - constexpr int64_t kBufSize = 1024; - std::vector<char> buf(kBufSize); - std::fill(buf.begin(), buf.end(), 'a'); - EXPECT_THAT(PwriteFd(fd, buf.data(), buf.size(), -1), - SyscallFailsWithErrno(EINVAL)); - EXPECT_THAT(close(fd), SyscallSucceeds()); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/pwritev2.cc b/test/syscalls/linux/pwritev2.cc deleted file mode 100644 index 3fe5a600f..000000000 --- a/test/syscalls/linux/pwritev2.cc +++ /dev/null @@ -1,346 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <fcntl.h> -#include <sys/syscall.h> -#include <sys/types.h> -#include <sys/uio.h> - -#include <string> -#include <vector> - -#include "gtest/gtest.h" -#include "test/syscalls/linux/file_base.h" -#include "test/util/file_descriptor.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -#ifndef SYS_pwritev2 -#if defined(__x86_64__) -#define SYS_pwritev2 328 -#elif defined(__aarch64__) -#define SYS_pwritev2 287 -#else -#error "Unknown architecture" -#endif -#endif // SYS_pwrite2 - -#ifndef RWF_HIPRI -#define RWF_HIPRI 0x1 -#endif // RWF_HIPRI - -#ifndef RWF_DSYNC -#define RWF_DSYNC 0x2 -#endif // RWF_DSYNC - -#ifndef RWF_SYNC -#define RWF_SYNC 0x4 -#endif // RWF_SYNC - -constexpr int kBufSize = 1024; - -void SetContent(std::vector<char>& content) { - for (uint i = 0; i < content.size(); i++) { - content[i] = static_cast<char>((i % 10) + '0'); - } -} - -ssize_t pwritev2(unsigned long fd, const struct iovec* iov, - unsigned long iovcnt, off_t offset, unsigned long flags) { - // syscall on pwritev2 does some weird things (see man syscall and search - // pwritev2), so we insert a 0 to word align the flags argument on native. - return syscall(SYS_pwritev2, fd, iov, iovcnt, offset, 0, flags); -} - -// This test is the base case where we call pwritev (no offset, no flags). -TEST(Writev2Test, TestBaseCall) { - SKIP_IF(pwritev2(-1, nullptr, 0, 0, 0) < 0 && errno == ENOSYS); - - const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), "", TempPath::kDefaultFileMode)); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR)); - - std::vector<char> content(kBufSize); - SetContent(content); - struct iovec iov[2]; - iov[0].iov_base = content.data(); - iov[0].iov_len = content.size() / 2; - iov[1].iov_base = static_cast<char*>(iov[0].iov_base) + (content.size() / 2); - iov[1].iov_len = content.size() / 2; - - ASSERT_THAT(pwritev2(fd.get(), iov, /*iovcnt=*/2, - /*offset=*/0, /*flags=*/0), - SyscallSucceedsWithValue(kBufSize)); - - std::vector<char> buf(kBufSize); - EXPECT_THAT(read(fd.get(), buf.data(), kBufSize), - SyscallSucceedsWithValue(kBufSize)); - - EXPECT_EQ(content, buf); -} - -// This test is where we call pwritev2 with a positive offset and no flags. -TEST(Pwritev2Test, TestValidPositiveOffset) { - SKIP_IF(pwritev2(-1, nullptr, 0, 0, 0) < 0 && errno == ENOSYS); - - std::string prefix(kBufSize, '0'); - - const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), prefix, TempPath::kDefaultFileMode)); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR)); - - std::vector<char> content(kBufSize); - SetContent(content); - struct iovec iov; - iov.iov_base = content.data(); - iov.iov_len = content.size(); - - ASSERT_THAT(pwritev2(fd.get(), &iov, /*iovcnt=*/1, - /*offset=*/prefix.size(), /*flags=*/0), - SyscallSucceedsWithValue(content.size())); - - std::vector<char> buf(prefix.size() + content.size()); - EXPECT_THAT(read(fd.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(buf.size())); - - std::vector<char> want(prefix.begin(), prefix.end()); - want.insert(want.end(), content.begin(), content.end()); - EXPECT_EQ(want, buf); -} - -// This test is the base case where we call writev by using -1 as the offset. -// The write should use the file offset, so the test increments the file offset -// prior to call pwritev2. -TEST(Pwritev2Test, TestNegativeOneOffset) { - SKIP_IF(pwritev2(-1, nullptr, 0, 0, 0) < 0 && errno == ENOSYS); - - const std::string prefix = "00"; - const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), prefix.data(), TempPath::kDefaultFileMode)); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR)); - ASSERT_THAT(lseek(fd.get(), prefix.size(), SEEK_SET), - SyscallSucceedsWithValue(prefix.size())); - - std::vector<char> content(kBufSize); - SetContent(content); - struct iovec iov; - iov.iov_base = content.data(); - iov.iov_len = content.size(); - - ASSERT_THAT(pwritev2(fd.get(), &iov, /*iovcnt*/ 1, - /*offset=*/static_cast<off_t>(-1), /*flags=*/0), - SyscallSucceedsWithValue(content.size())); - - ASSERT_THAT(lseek(fd.get(), 0, SEEK_CUR), - SyscallSucceedsWithValue(prefix.size() + content.size())); - - std::vector<char> buf(prefix.size() + content.size()); - EXPECT_THAT(pread(fd.get(), buf.data(), buf.size(), /*offset=*/0), - SyscallSucceedsWithValue(buf.size())); - - std::vector<char> want(prefix.begin(), prefix.end()); - want.insert(want.end(), content.begin(), content.end()); - EXPECT_EQ(want, buf); -} - -// pwritev2 requires if the RWF_HIPRI flag is passed, the fd must be opened with -// O_DIRECT. This test implements a correct call with the RWF_HIPRI flag. -TEST(Pwritev2Test, TestCallWithRWF_HIPRI) { - SKIP_IF(pwritev2(-1, nullptr, 0, 0, 0) < 0 && errno == ENOSYS); - - const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), "", TempPath::kDefaultFileMode)); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR)); - - std::vector<char> content(kBufSize); - SetContent(content); - struct iovec iov; - iov.iov_base = content.data(); - iov.iov_len = content.size(); - - EXPECT_THAT(pwritev2(fd.get(), &iov, /*iovcnt=*/1, - /*offset=*/0, /*flags=*/RWF_HIPRI), - SyscallSucceedsWithValue(kBufSize)); - - std::vector<char> buf(content.size()); - EXPECT_THAT(read(fd.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(buf.size())); - - EXPECT_EQ(buf, content); -} - -// This test checks that pwritev2 can be called with valid flags -TEST(Pwritev2Test, TestCallWithValidFlags) { - SKIP_IF(pwritev2(-1, nullptr, 0, 0, 0) < 0 && errno == ENOSYS); - - const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), "", TempPath::kDefaultFileMode)); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR)); - - std::vector<char> content(kBufSize, '0'); - struct iovec iov; - iov.iov_base = content.data(); - iov.iov_len = content.size(); - - EXPECT_THAT(pwritev2(fd.get(), &iov, /*iovcnt=*/1, - /*offset=*/0, /*flags=*/RWF_DSYNC), - SyscallSucceedsWithValue(kBufSize)); - - std::vector<char> buf(content.size()); - EXPECT_THAT(read(fd.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(buf.size())); - - EXPECT_EQ(buf, content); - - SetContent(content); - - EXPECT_THAT(pwritev2(fd.get(), &iov, /*iovcnt=*/1, - /*offset=*/0, /*flags=*/0x4), - SyscallSucceedsWithValue(kBufSize)); - - ASSERT_THAT(lseek(fd.get(), 0, SEEK_CUR), - SyscallSucceedsWithValue(content.size())); - - EXPECT_THAT(pread(fd.get(), buf.data(), buf.size(), /*offset=*/0), - SyscallSucceedsWithValue(buf.size())); - - EXPECT_EQ(buf, content); -} - -// This test calls pwritev2 with a bad file descriptor. -TEST(Writev2Test, TestBadFile) { - SKIP_IF(pwritev2(-1, nullptr, 0, 0, 0) < 0 && errno == ENOSYS); - ASSERT_THAT(pwritev2(/*fd=*/-1, /*iov=*/nullptr, /*iovcnt=*/0, - /*offset=*/0, /*flags=*/0), - SyscallFailsWithErrno(EBADF)); -} - -// This test calls pwrite2 with an invalid offset. -TEST(Pwritev2Test, TestInvalidOffset) { - SKIP_IF(pwritev2(-1, nullptr, 0, 0, 0) < 0 && errno == ENOSYS); - - const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), "", TempPath::kDefaultFileMode)); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR)); - - char buf[16]; - struct iovec iov; - iov.iov_base = buf; - iov.iov_len = sizeof(buf); - - EXPECT_THAT(pwritev2(fd.get(), &iov, /*iovcnt=*/1, - /*offset=*/static_cast<off_t>(-8), /*flags=*/0), - SyscallFailsWithErrno(EINVAL)); -} - -TEST(Pwritev2Test, TestUnseekableFileValid) { - SKIP_IF(pwritev2(-1, nullptr, 0, 0, 0) < 0 && errno == ENOSYS); - - int pipe_fds[2]; - - ASSERT_THAT(pipe(pipe_fds), SyscallSucceeds()); - - std::vector<char> content(32, '0'); - SetContent(content); - struct iovec iov; - iov.iov_base = content.data(); - iov.iov_len = content.size(); - - EXPECT_THAT(pwritev2(pipe_fds[1], &iov, /*iovcnt=*/1, - /*offset=*/static_cast<off_t>(-1), /*flags=*/0), - SyscallSucceedsWithValue(content.size())); - - std::vector<char> buf(content.size()); - EXPECT_THAT(read(pipe_fds[0], buf.data(), buf.size()), - SyscallSucceedsWithValue(buf.size())); - - EXPECT_EQ(content, buf); - - EXPECT_THAT(close(pipe_fds[0]), SyscallSucceeds()); - EXPECT_THAT(close(pipe_fds[1]), SyscallSucceeds()); -} - -// Calling pwritev2 with a non-negative offset calls pwritev. Calling pwritev -// with an unseekable file is not allowed. A pipe is used for an unseekable -// file. -TEST(Pwritev2Test, TestUnseekableFileInValid) { - SKIP_IF(pwritev2(-1, nullptr, 0, 0, 0) < 0 && errno == ENOSYS); - - int pipe_fds[2]; - char buf[16]; - struct iovec iov; - iov.iov_base = buf; - iov.iov_len = sizeof(buf); - - ASSERT_THAT(pipe(pipe_fds), SyscallSucceeds()); - - EXPECT_THAT(pwritev2(pipe_fds[1], &iov, /*iovcnt=*/1, - /*offset=*/2, /*flags=*/0), - SyscallFailsWithErrno(ESPIPE)); - - EXPECT_THAT(close(pipe_fds[0]), SyscallSucceeds()); - EXPECT_THAT(close(pipe_fds[1]), SyscallSucceeds()); -} - -TEST(Pwritev2Test, TestReadOnlyFile) { - SKIP_IF(pwritev2(-1, nullptr, 0, 0, 0) < 0 && errno == ENOSYS); - - const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), "", TempPath::kDefaultFileMode)); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDONLY)); - - char buf[16]; - struct iovec iov; - iov.iov_base = buf; - iov.iov_len = sizeof(buf); - - EXPECT_THAT(pwritev2(fd.get(), &iov, /*iovcnt=*/1, - /*offset=*/0, /*flags=*/0), - SyscallFailsWithErrno(EBADF)); -} - -// This test calls pwritev2 with an invalid flag. -TEST(Pwritev2Test, TestInvalidFlag) { - SKIP_IF(pwritev2(-1, nullptr, 0, 0, 0) < 0 && errno == ENOSYS); - - const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), "", TempPath::kDefaultFileMode)); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR | O_DIRECT)); - - char buf[16]; - struct iovec iov; - iov.iov_base = buf; - iov.iov_len = sizeof(buf); - - EXPECT_THAT(pwritev2(fd.get(), &iov, /*iovcnt=*/1, - /*offset=*/0, /*flags=*/0xF0), - SyscallFailsWithErrno(EOPNOTSUPP)); -} - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/raw_socket_hdrincl.cc b/test/syscalls/linux/raw_socket_hdrincl.cc deleted file mode 100644 index 0a27506aa..000000000 --- a/test/syscalls/linux/raw_socket_hdrincl.cc +++ /dev/null @@ -1,383 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <linux/capability.h> -#include <netinet/in.h> -#include <netinet/ip.h> -#include <netinet/ip_icmp.h> -#include <netinet/udp.h> -#include <poll.h> -#include <sys/socket.h> -#include <sys/types.h> -#include <unistd.h> - -#include <algorithm> -#include <cstring> - -#include "gtest/gtest.h" -#include "absl/base/internal/endian.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/capability_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -// Tests for IPPROTO_RAW raw sockets, which implies IP_HDRINCL. -class RawHDRINCL : public ::testing::Test { - protected: - // Creates a socket to be used in tests. - void SetUp() override; - - // Closes the socket created by SetUp(). - void TearDown() override; - - // Returns a valid looback IP header with no payload. - struct iphdr LoopbackHeader(); - - // Fills in buf with an IP header, UDP header, and payload. Returns false if - // buf_size isn't large enough to hold everything. - bool FillPacket(char* buf, size_t buf_size, int port, const char* payload, - uint16_t payload_size); - - // The socket used for both reading and writing. - int socket_; - - // The loopback address. - struct sockaddr_in addr_; -}; - -void RawHDRINCL::SetUp() { - if (!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))) { - ASSERT_THAT(socket(AF_INET, SOCK_RAW, IPPROTO_RAW), - SyscallFailsWithErrno(EPERM)); - GTEST_SKIP(); - } - - ASSERT_THAT(socket_ = socket(AF_INET, SOCK_RAW, IPPROTO_RAW), - SyscallSucceeds()); - - addr_ = {}; - - addr_.sin_port = IPPROTO_IP; - addr_.sin_addr.s_addr = htonl(INADDR_LOOPBACK); - addr_.sin_family = AF_INET; -} - -void RawHDRINCL::TearDown() { - // TearDown will be run even if we skip the test. - if (ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))) { - EXPECT_THAT(close(socket_), SyscallSucceeds()); - } -} - -struct iphdr RawHDRINCL::LoopbackHeader() { - struct iphdr hdr = {}; - hdr.ihl = 5; - hdr.version = 4; - hdr.tos = 0; - hdr.tot_len = absl::gbswap_16(sizeof(hdr)); - hdr.id = 0; - hdr.frag_off = 0; - hdr.ttl = 7; - hdr.protocol = 1; - hdr.daddr = htonl(INADDR_LOOPBACK); - // hdr.check is set by the network stack. - // hdr.tot_len is set by the network stack. - // hdr.saddr is set by the network stack. - return hdr; -} - -bool RawHDRINCL::FillPacket(char* buf, size_t buf_size, int port, - const char* payload, uint16_t payload_size) { - if (buf_size < sizeof(struct iphdr) + sizeof(struct udphdr) + payload_size) { - return false; - } - - struct iphdr ip = LoopbackHeader(); - ip.protocol = IPPROTO_UDP; - - struct udphdr udp = {}; - udp.source = absl::gbswap_16(port); - udp.dest = absl::gbswap_16(port); - udp.len = absl::gbswap_16(sizeof(udp) + payload_size); - udp.check = 0; - - memcpy(buf, reinterpret_cast<char*>(&ip), sizeof(ip)); - memcpy(buf + sizeof(ip), reinterpret_cast<char*>(&udp), sizeof(udp)); - memcpy(buf + sizeof(ip) + sizeof(udp), payload, payload_size); - - return true; -} - -// We should be able to create multiple IPPROTO_RAW sockets. RawHDRINCL::Setup -// creates the first one, so we only have to create one more here. -TEST_F(RawHDRINCL, MultipleCreation) { - int s2; - ASSERT_THAT(s2 = socket(AF_INET, SOCK_RAW, IPPROTO_RAW), SyscallSucceeds()); - - ASSERT_THAT(close(s2), SyscallSucceeds()); -} - -// Test that shutting down an unconnected socket fails. -TEST_F(RawHDRINCL, FailShutdownWithoutConnect) { - ASSERT_THAT(shutdown(socket_, SHUT_WR), SyscallFailsWithErrno(ENOTCONN)); - ASSERT_THAT(shutdown(socket_, SHUT_RD), SyscallFailsWithErrno(ENOTCONN)); -} - -// Test that listen() fails. -TEST_F(RawHDRINCL, FailListen) { - ASSERT_THAT(listen(socket_, 1), SyscallFailsWithErrno(ENOTSUP)); -} - -// Test that accept() fails. -TEST_F(RawHDRINCL, FailAccept) { - struct sockaddr saddr; - socklen_t addrlen; - ASSERT_THAT(accept(socket_, &saddr, &addrlen), - SyscallFailsWithErrno(ENOTSUP)); -} - -// Test that the socket is writable immediately. -TEST_F(RawHDRINCL, PollWritableImmediately) { - struct pollfd pfd = {}; - pfd.fd = socket_; - pfd.events = POLLOUT; - ASSERT_THAT(RetryEINTR(poll)(&pfd, 1, 0), SyscallSucceedsWithValue(1)); -} - -// Test that the socket isn't readable. -TEST_F(RawHDRINCL, NotReadable) { - // Try to receive data with MSG_DONTWAIT, which returns immediately if there's - // nothing to be read. - char buf[117]; - ASSERT_THAT(RetryEINTR(recv)(socket_, buf, sizeof(buf), MSG_DONTWAIT), - SyscallFailsWithErrno(EINVAL)); -} - -// Test that we can connect() to a valid IP (loopback). -TEST_F(RawHDRINCL, ConnectToLoopback) { - ASSERT_THAT(connect(socket_, reinterpret_cast<struct sockaddr*>(&addr_), - sizeof(addr_)), - SyscallSucceeds()); -} - -TEST_F(RawHDRINCL, SendWithoutConnectSucceeds) { - struct iphdr hdr = LoopbackHeader(); - ASSERT_THAT(send(socket_, &hdr, sizeof(hdr), 0), - SyscallSucceedsWithValue(sizeof(hdr))); -} - -// HDRINCL implies write-only. Verify that we can't read a packet sent to -// loopback. -TEST_F(RawHDRINCL, NotReadableAfterWrite) { - ASSERT_THAT(connect(socket_, reinterpret_cast<struct sockaddr*>(&addr_), - sizeof(addr_)), - SyscallSucceeds()); - - // Construct a packet with an IP header, UDP header, and payload. - constexpr char kPayload[] = "odst"; - char packet[sizeof(struct iphdr) + sizeof(struct udphdr) + sizeof(kPayload)]; - ASSERT_TRUE(FillPacket(packet, sizeof(packet), 40000 /* port */, kPayload, - sizeof(kPayload))); - - socklen_t addrlen = sizeof(addr_); - ASSERT_NO_FATAL_FAILURE( - sendto(socket_, reinterpret_cast<void*>(&packet), sizeof(packet), 0, - reinterpret_cast<struct sockaddr*>(&addr_), addrlen)); - - struct pollfd pfd = {}; - pfd.fd = socket_; - pfd.events = POLLIN; - ASSERT_THAT(RetryEINTR(poll)(&pfd, 1, 1000), SyscallSucceedsWithValue(0)); -} - -TEST_F(RawHDRINCL, WriteTooSmall) { - ASSERT_THAT(connect(socket_, reinterpret_cast<struct sockaddr*>(&addr_), - sizeof(addr_)), - SyscallSucceeds()); - - // This is smaller than the size of an IP header. - constexpr char kBuf[] = "JP5"; - ASSERT_THAT(send(socket_, kBuf, sizeof(kBuf), 0), - SyscallFailsWithErrno(EINVAL)); -} - -// Bind to localhost. -TEST_F(RawHDRINCL, BindToLocalhost) { - ASSERT_THAT( - bind(socket_, reinterpret_cast<struct sockaddr*>(&addr_), sizeof(addr_)), - SyscallSucceeds()); -} - -// Bind to a different address. -TEST_F(RawHDRINCL, BindToInvalid) { - struct sockaddr_in bind_addr = {}; - bind_addr.sin_family = AF_INET; - bind_addr.sin_addr = {1}; // 1.0.0.0 - An address that we can't bind to. - ASSERT_THAT(bind(socket_, reinterpret_cast<struct sockaddr*>(&bind_addr), - sizeof(bind_addr)), - SyscallFailsWithErrno(EADDRNOTAVAIL)); -} - -// Send and receive a packet. -TEST_F(RawHDRINCL, SendAndReceive) { - int port = 40000; - if (!IsRunningOnGvisor()) { - port = static_cast<short>(ASSERT_NO_ERRNO_AND_VALUE( - PortAvailable(0, AddressFamily::kIpv4, SocketType::kUdp, false))); - } - - // IPPROTO_RAW sockets are write-only. We'll have to open another socket to - // read what we write. - FileDescriptor udp_sock = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_RAW, IPPROTO_UDP)); - - // Construct a packet with an IP header, UDP header, and payload. - constexpr char kPayload[] = "toto"; - char packet[sizeof(struct iphdr) + sizeof(struct udphdr) + sizeof(kPayload)]; - ASSERT_TRUE( - FillPacket(packet, sizeof(packet), port, kPayload, sizeof(kPayload))); - - socklen_t addrlen = sizeof(addr_); - ASSERT_NO_FATAL_FAILURE(sendto(socket_, &packet, sizeof(packet), 0, - reinterpret_cast<struct sockaddr*>(&addr_), - addrlen)); - - // Receive the payload. - char recv_buf[sizeof(packet)]; - struct sockaddr_in src; - socklen_t src_size = sizeof(src); - ASSERT_THAT(recvfrom(udp_sock.get(), recv_buf, sizeof(recv_buf), 0, - reinterpret_cast<struct sockaddr*>(&src), &src_size), - SyscallSucceedsWithValue(sizeof(packet))); - EXPECT_EQ( - memcmp(kPayload, recv_buf + sizeof(struct iphdr) + sizeof(struct udphdr), - sizeof(kPayload)), - 0); - // The network stack should have set the source address. - EXPECT_EQ(src.sin_family, AF_INET); - EXPECT_EQ(absl::gbswap_32(src.sin_addr.s_addr), INADDR_LOOPBACK); - // The packet ID should be 0, as the packet is less than 68 bytes. - struct iphdr iphdr = {}; - memcpy(&iphdr, recv_buf, sizeof(iphdr)); - EXPECT_EQ(iphdr.id, 0); -} - -// Send and receive a packet with nonzero IP ID. -TEST_F(RawHDRINCL, SendAndReceiveNonzeroID) { - int port = 40000; - if (!IsRunningOnGvisor()) { - port = static_cast<short>(ASSERT_NO_ERRNO_AND_VALUE( - PortAvailable(0, AddressFamily::kIpv4, SocketType::kUdp, false))); - } - - // IPPROTO_RAW sockets are write-only. We'll have to open another socket to - // read what we write. - FileDescriptor udp_sock = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_RAW, IPPROTO_UDP)); - - // Construct a packet with an IP header, UDP header, and payload. Make the - // payload large enough to force an IP ID to be assigned. - constexpr char kPayload[128] = {}; - char packet[sizeof(struct iphdr) + sizeof(struct udphdr) + sizeof(kPayload)]; - ASSERT_TRUE( - FillPacket(packet, sizeof(packet), port, kPayload, sizeof(kPayload))); - - socklen_t addrlen = sizeof(addr_); - ASSERT_NO_FATAL_FAILURE(sendto(socket_, &packet, sizeof(packet), 0, - reinterpret_cast<struct sockaddr*>(&addr_), - addrlen)); - - // Receive the payload. - char recv_buf[sizeof(packet)]; - struct sockaddr_in src; - socklen_t src_size = sizeof(src); - ASSERT_THAT(recvfrom(udp_sock.get(), recv_buf, sizeof(recv_buf), 0, - reinterpret_cast<struct sockaddr*>(&src), &src_size), - SyscallSucceedsWithValue(sizeof(packet))); - EXPECT_EQ( - memcmp(kPayload, recv_buf + sizeof(struct iphdr) + sizeof(struct udphdr), - sizeof(kPayload)), - 0); - // The network stack should have set the source address. - EXPECT_EQ(src.sin_family, AF_INET); - EXPECT_EQ(absl::gbswap_32(src.sin_addr.s_addr), INADDR_LOOPBACK); - // The packet ID should not be 0, as the packet was more than 68 bytes. - struct iphdr* iphdr = reinterpret_cast<struct iphdr*>(recv_buf); - EXPECT_NE(iphdr->id, 0); -} - -// Send and receive a packet where the sendto address is not the same as the -// provided destination. -TEST_F(RawHDRINCL, SendAndReceiveDifferentAddress) { - int port = 40000; - if (!IsRunningOnGvisor()) { - port = static_cast<short>(ASSERT_NO_ERRNO_AND_VALUE( - PortAvailable(0, AddressFamily::kIpv4, SocketType::kUdp, false))); - } - - // IPPROTO_RAW sockets are write-only. We'll have to open another socket to - // read what we write. - FileDescriptor udp_sock = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_RAW, IPPROTO_UDP)); - - // Construct a packet with an IP header, UDP header, and payload. - constexpr char kPayload[] = "toto"; - char packet[sizeof(struct iphdr) + sizeof(struct udphdr) + sizeof(kPayload)]; - ASSERT_TRUE( - FillPacket(packet, sizeof(packet), port, kPayload, sizeof(kPayload))); - // Overwrite the IP destination address with an IP we can't get to. - struct iphdr iphdr = {}; - memcpy(&iphdr, packet, sizeof(iphdr)); - iphdr.daddr = 42; - memcpy(packet, &iphdr, sizeof(iphdr)); - - socklen_t addrlen = sizeof(addr_); - ASSERT_NO_FATAL_FAILURE(sendto(socket_, &packet, sizeof(packet), 0, - reinterpret_cast<struct sockaddr*>(&addr_), - addrlen)); - - // Receive the payload, since sendto should replace the bad destination with - // localhost. - char recv_buf[sizeof(packet)]; - struct sockaddr_in src; - socklen_t src_size = sizeof(src); - ASSERT_THAT(recvfrom(udp_sock.get(), recv_buf, sizeof(recv_buf), 0, - reinterpret_cast<struct sockaddr*>(&src), &src_size), - SyscallSucceedsWithValue(sizeof(packet))); - EXPECT_EQ( - memcmp(kPayload, recv_buf + sizeof(struct iphdr) + sizeof(struct udphdr), - sizeof(kPayload)), - 0); - // The network stack should have set the source address. - EXPECT_EQ(src.sin_family, AF_INET); - EXPECT_EQ(absl::gbswap_32(src.sin_addr.s_addr), INADDR_LOOPBACK); - // The packet ID should be 0, as the packet is less than 68 bytes. - struct iphdr recv_iphdr = {}; - memcpy(&recv_iphdr, recv_buf, sizeof(recv_iphdr)); - EXPECT_EQ(recv_iphdr.id, 0); - // The destination address should be localhost, not the bad IP we set - // initially. - EXPECT_EQ(absl::gbswap_32(recv_iphdr.daddr), INADDR_LOOPBACK); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/raw_socket_icmp.cc b/test/syscalls/linux/raw_socket_icmp.cc deleted file mode 100644 index 3de898df7..000000000 --- a/test/syscalls/linux/raw_socket_icmp.cc +++ /dev/null @@ -1,514 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <linux/capability.h> -#include <netinet/in.h> -#include <netinet/ip.h> -#include <netinet/ip_icmp.h> -#include <sys/socket.h> -#include <sys/types.h> -#include <unistd.h> - -#include <algorithm> -#include <cstdint> - -#include "gtest/gtest.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/capability_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -// The size of an empty ICMP packet and IP header together. -constexpr size_t kEmptyICMPSize = 28; - -// ICMP raw sockets get their own special tests because Linux automatically -// responds to ICMP echo requests, and thus a single echo request sent via -// loopback leads to 2 received ICMP packets. - -class RawSocketICMPTest : public ::testing::Test { - protected: - // Creates a socket to be used in tests. - void SetUp() override; - - // Closes the socket created by SetUp(). - void TearDown() override; - - // Checks that both an ICMP echo request and reply are received. Calls should - // be wrapped in ASSERT_NO_FATAL_FAILURE. - void ExpectICMPSuccess(const struct icmphdr& icmp); - - // Sends icmp via s_. - void SendEmptyICMP(const struct icmphdr& icmp); - - // Sends icmp via s_ to the given address. - void SendEmptyICMPTo(int sock, const struct sockaddr_in& addr, - const struct icmphdr& icmp); - - // Reads from s_ into recv_buf. - void ReceiveICMP(char* recv_buf, size_t recv_buf_len, size_t expected_size, - struct sockaddr_in* src); - - // Reads from sock into recv_buf. - void ReceiveICMPFrom(char* recv_buf, size_t recv_buf_len, - size_t expected_size, struct sockaddr_in* src, int sock); - - // The socket used for both reading and writing. - int s_; - - // The loopback address. - struct sockaddr_in addr_; -}; - -void RawSocketICMPTest::SetUp() { - if (!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))) { - ASSERT_THAT(socket(AF_INET, SOCK_RAW, IPPROTO_ICMP), - SyscallFailsWithErrno(EPERM)); - GTEST_SKIP(); - } - - ASSERT_THAT(s_ = socket(AF_INET, SOCK_RAW, IPPROTO_ICMP), SyscallSucceeds()); - - addr_ = {}; - - // "On raw sockets sin_port is set to the IP protocol." - ip(7). - addr_.sin_port = IPPROTO_IP; - addr_.sin_addr.s_addr = htonl(INADDR_LOOPBACK); - addr_.sin_family = AF_INET; -} - -void RawSocketICMPTest::TearDown() { - // TearDown will be run even if we skip the test. - if (ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))) { - EXPECT_THAT(close(s_), SyscallSucceeds()); - } -} - -// We'll only read an echo in this case, as the kernel won't respond to the -// malformed ICMP checksum. -TEST_F(RawSocketICMPTest, SendAndReceiveBadChecksum) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))); - - // Prepare and send an ICMP packet. Use arbitrary junk for checksum, sequence, - // and ID. None of that should matter for raw sockets - the kernel should - // still give us the packet. - struct icmphdr icmp; - icmp.type = ICMP_ECHO; - icmp.code = 0; - icmp.checksum = 0; - icmp.un.echo.sequence = 2012; - icmp.un.echo.id = 2014; - ASSERT_NO_FATAL_FAILURE(SendEmptyICMP(icmp)); - - // Veryify that we get the echo, then that there's nothing else to read. - char recv_buf[kEmptyICMPSize]; - struct sockaddr_in src; - ASSERT_NO_FATAL_FAILURE( - ReceiveICMP(recv_buf, sizeof(recv_buf), sizeof(struct icmphdr), &src)); - EXPECT_EQ(memcmp(&src, &addr_, sizeof(src)), 0); - // The packet should be identical to what we sent. - EXPECT_EQ(memcmp(recv_buf + sizeof(struct iphdr), &icmp, sizeof(icmp)), 0); - - // And there should be nothing left to read. - EXPECT_THAT(RetryEINTR(recv)(s_, recv_buf, sizeof(recv_buf), MSG_DONTWAIT), - SyscallFailsWithErrno(EAGAIN)); -} - -// Send and receive an ICMP packet. -TEST_F(RawSocketICMPTest, SendAndReceive) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))); - - // Prepare and send an ICMP packet. Use arbitrary junk for sequence and ID. - // None of that should matter for raw sockets - the kernel should still give - // us the packet. - struct icmphdr icmp; - icmp.type = ICMP_ECHO; - icmp.code = 0; - icmp.checksum = 0; - icmp.un.echo.sequence = 2012; - icmp.un.echo.id = 2014; - icmp.checksum = ICMPChecksum(icmp, NULL, 0); - ASSERT_NO_FATAL_FAILURE(SendEmptyICMP(icmp)); - - ASSERT_NO_FATAL_FAILURE(ExpectICMPSuccess(icmp)); -} - -// We should be able to create multiple raw sockets for the same protocol and -// receive the same packet on both. -TEST_F(RawSocketICMPTest, MultipleSocketReceive) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))); - - FileDescriptor s2 = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_RAW, IPPROTO_ICMP)); - - // Prepare and send an ICMP packet. Use arbitrary junk for sequence and ID. - // None of that should matter for raw sockets - the kernel should still give - // us the packet. - struct icmphdr icmp; - icmp.type = ICMP_ECHO; - icmp.code = 0; - icmp.checksum = 0; - icmp.un.echo.sequence = 2016; - icmp.un.echo.id = 2018; - icmp.checksum = ICMPChecksum(icmp, NULL, 0); - ASSERT_NO_FATAL_FAILURE(SendEmptyICMP(icmp)); - - // Both sockets will receive the echo request and reply in indeterminate - // order, so we'll need to read 2 packets from each. - - // Receive on socket 1. - constexpr int kBufSize = kEmptyICMPSize; - char recv_buf1[2][kBufSize]; - struct sockaddr_in src; - for (int i = 0; i < 2; i++) { - ASSERT_NO_FATAL_FAILURE(ReceiveICMP(recv_buf1[i], - ABSL_ARRAYSIZE(recv_buf1[i]), - sizeof(struct icmphdr), &src)); - EXPECT_EQ(memcmp(&src, &addr_, sizeof(src)), 0); - } - - // Receive on socket 2. - char recv_buf2[2][kBufSize]; - for (int i = 0; i < 2; i++) { - ASSERT_NO_FATAL_FAILURE( - ReceiveICMPFrom(recv_buf2[i], ABSL_ARRAYSIZE(recv_buf2[i]), - sizeof(struct icmphdr), &src, s2.get())); - EXPECT_EQ(memcmp(&src, &addr_, sizeof(src)), 0); - } - - // Ensure both sockets receive identical packets. - int types[] = {ICMP_ECHO, ICMP_ECHOREPLY}; - for (int type : types) { - auto match_type = [=](char buf[kBufSize]) { - struct icmphdr* icmp = - reinterpret_cast<struct icmphdr*>(buf + sizeof(struct iphdr)); - return icmp->type == type; - }; - auto icmp1_it = - std::find_if(std::begin(recv_buf1), std::end(recv_buf1), match_type); - auto icmp2_it = - std::find_if(std::begin(recv_buf2), std::end(recv_buf2), match_type); - ASSERT_NE(icmp1_it, std::end(recv_buf1)); - ASSERT_NE(icmp2_it, std::end(recv_buf2)); - EXPECT_EQ(memcmp(*icmp1_it + sizeof(struct iphdr), - *icmp2_it + sizeof(struct iphdr), sizeof(icmp)), - 0); - } -} - -// A raw ICMP socket and ping socket should both receive the ICMP packets -// intended for the ping socket. -TEST_F(RawSocketICMPTest, RawAndPingSockets) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))); - - FileDescriptor ping_sock = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_DGRAM, IPPROTO_ICMP)); - - // Ping sockets take care of the ICMP ID and checksum. - struct icmphdr icmp; - icmp.type = ICMP_ECHO; - icmp.code = 0; - icmp.un.echo.sequence = *static_cast<unsigned short*>(&icmp.un.echo.sequence); - ASSERT_THAT(RetryEINTR(sendto)(ping_sock.get(), &icmp, sizeof(icmp), 0, - reinterpret_cast<struct sockaddr*>(&addr_), - sizeof(addr_)), - SyscallSucceedsWithValue(sizeof(icmp))); - - // Receive on socket 1, which receives the echo request and reply in - // indeterminate order. - constexpr int kBufSize = kEmptyICMPSize; - char recv_buf1[2][kBufSize]; - struct sockaddr_in src; - for (int i = 0; i < 2; i++) { - ASSERT_NO_FATAL_FAILURE( - ReceiveICMP(recv_buf1[i], kBufSize, sizeof(struct icmphdr), &src)); - EXPECT_EQ(memcmp(&src, &addr_, sizeof(src)), 0); - } - - // Receive on socket 2. Ping sockets only get the echo reply, not the initial - // echo. - char ping_recv_buf[kBufSize]; - ASSERT_THAT(RetryEINTR(recv)(ping_sock.get(), ping_recv_buf, kBufSize, 0), - SyscallSucceedsWithValue(sizeof(struct icmphdr))); - - // Ensure both sockets receive identical echo reply packets. - auto match_type_raw = [=](char buf[kBufSize]) { - struct icmphdr* icmp = - reinterpret_cast<struct icmphdr*>(buf + sizeof(struct iphdr)); - return icmp->type == ICMP_ECHOREPLY; - }; - auto raw_reply_it = - std::find_if(std::begin(recv_buf1), std::end(recv_buf1), match_type_raw); - ASSERT_NE(raw_reply_it, std::end(recv_buf1)); - EXPECT_EQ( - memcmp(*raw_reply_it + sizeof(struct iphdr), ping_recv_buf, sizeof(icmp)), - 0); -} - -// A raw ICMP socket should be able to send a malformed short ICMP Echo Request, -// while ping socket should not. -// Neither should be able to receieve a short malformed packet. -TEST_F(RawSocketICMPTest, ShortEchoRawAndPingSockets) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))); - - FileDescriptor ping_sock = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_DGRAM, IPPROTO_ICMP)); - - struct icmphdr icmp; - icmp.type = ICMP_ECHO; - icmp.code = 0; - icmp.un.echo.sequence = 0; - icmp.un.echo.id = 6789; - icmp.checksum = 0; - icmp.checksum = ICMPChecksum(icmp, NULL, 0); - - // Omit 2 bytes from ICMP packet. - constexpr int kShortICMPSize = sizeof(icmp) - 2; - - // Sending a malformed short ICMP message to a ping socket should fail. - ASSERT_THAT(RetryEINTR(sendto)(ping_sock.get(), &icmp, kShortICMPSize, 0, - reinterpret_cast<struct sockaddr*>(&addr_), - sizeof(addr_)), - SyscallFailsWithErrno(EINVAL)); - - // Sending a malformed short ICMP message to a raw socket should not fail. - ASSERT_THAT(RetryEINTR(sendto)(s_, &icmp, kShortICMPSize, 0, - reinterpret_cast<struct sockaddr*>(&addr_), - sizeof(addr_)), - SyscallSucceedsWithValue(kShortICMPSize)); - - // Neither Ping nor Raw socket should have anything to read. - char recv_buf[kEmptyICMPSize]; - EXPECT_THAT(RetryEINTR(recv)(ping_sock.get(), recv_buf, sizeof(recv_buf), - MSG_DONTWAIT), - SyscallFailsWithErrno(EAGAIN)); - EXPECT_THAT(RetryEINTR(recv)(s_, recv_buf, sizeof(recv_buf), MSG_DONTWAIT), - SyscallFailsWithErrno(EAGAIN)); -} - -// A raw ICMP socket should be able to send a malformed short ICMP Echo Reply, -// while ping socket should not. -// Neither should be able to receieve a short malformed packet. -TEST_F(RawSocketICMPTest, ShortEchoReplyRawAndPingSockets) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))); - - FileDescriptor ping_sock = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_DGRAM, IPPROTO_ICMP)); - - struct icmphdr icmp; - icmp.type = ICMP_ECHOREPLY; - icmp.code = 0; - icmp.un.echo.sequence = 0; - icmp.un.echo.id = 6789; - icmp.checksum = 0; - icmp.checksum = ICMPChecksum(icmp, NULL, 0); - - // Omit 2 bytes from ICMP packet. - constexpr int kShortICMPSize = sizeof(icmp) - 2; - - // Sending a malformed short ICMP message to a ping socket should fail. - ASSERT_THAT(RetryEINTR(sendto)(ping_sock.get(), &icmp, kShortICMPSize, 0, - reinterpret_cast<struct sockaddr*>(&addr_), - sizeof(addr_)), - SyscallFailsWithErrno(EINVAL)); - - // Sending a malformed short ICMP message to a raw socket should not fail. - ASSERT_THAT(RetryEINTR(sendto)(s_, &icmp, kShortICMPSize, 0, - reinterpret_cast<struct sockaddr*>(&addr_), - sizeof(addr_)), - SyscallSucceedsWithValue(kShortICMPSize)); - - // Neither Ping nor Raw socket should have anything to read. - char recv_buf[kEmptyICMPSize]; - EXPECT_THAT(RetryEINTR(recv)(ping_sock.get(), recv_buf, sizeof(recv_buf), - MSG_DONTWAIT), - SyscallFailsWithErrno(EAGAIN)); - EXPECT_THAT(RetryEINTR(recv)(s_, recv_buf, sizeof(recv_buf), MSG_DONTWAIT), - SyscallFailsWithErrno(EAGAIN)); -} - -// Test that connect() sends packets to the right place. -TEST_F(RawSocketICMPTest, SendAndReceiveViaConnect) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))); - - ASSERT_THAT( - connect(s_, reinterpret_cast<struct sockaddr*>(&addr_), sizeof(addr_)), - SyscallSucceeds()); - - // Prepare and send an ICMP packet. Use arbitrary junk for sequence and ID. - // None of that should matter for raw sockets - the kernel should still give - // us the packet. - struct icmphdr icmp; - icmp.type = ICMP_ECHO; - icmp.code = 0; - icmp.checksum = 0; - icmp.un.echo.sequence = 2003; - icmp.un.echo.id = 2004; - icmp.checksum = ICMPChecksum(icmp, NULL, 0); - ASSERT_THAT(send(s_, &icmp, sizeof(icmp), 0), - SyscallSucceedsWithValue(sizeof(icmp))); - - ASSERT_NO_FATAL_FAILURE(ExpectICMPSuccess(icmp)); -} - -// Bind to localhost, then send and receive packets. -TEST_F(RawSocketICMPTest, BindSendAndReceive) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))); - - ASSERT_THAT( - bind(s_, reinterpret_cast<struct sockaddr*>(&addr_), sizeof(addr_)), - SyscallSucceeds()); - - // Prepare and send an ICMP packet. Use arbitrary junk for checksum, sequence, - // and ID. None of that should matter for raw sockets - the kernel should - // still give us the packet. - struct icmphdr icmp; - icmp.type = ICMP_ECHO; - icmp.code = 0; - icmp.checksum = 0; - icmp.un.echo.sequence = 2004; - icmp.un.echo.id = 2007; - icmp.checksum = ICMPChecksum(icmp, NULL, 0); - ASSERT_NO_FATAL_FAILURE(SendEmptyICMP(icmp)); - - ASSERT_NO_FATAL_FAILURE(ExpectICMPSuccess(icmp)); -} - -// Bind and connect to localhost and send/receive packets. -TEST_F(RawSocketICMPTest, BindConnectSendAndReceive) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))); - - ASSERT_THAT( - bind(s_, reinterpret_cast<struct sockaddr*>(&addr_), sizeof(addr_)), - SyscallSucceeds()); - ASSERT_THAT( - connect(s_, reinterpret_cast<struct sockaddr*>(&addr_), sizeof(addr_)), - SyscallSucceeds()); - - // Prepare and send an ICMP packet. Use arbitrary junk for checksum, sequence, - // and ID. None of that should matter for raw sockets - the kernel should - // still give us the packet. - struct icmphdr icmp; - icmp.type = ICMP_ECHO; - icmp.code = 0; - icmp.checksum = 0; - icmp.un.echo.sequence = 2010; - icmp.un.echo.id = 7; - icmp.checksum = ICMPChecksum(icmp, NULL, 0); - ASSERT_NO_FATAL_FAILURE(SendEmptyICMP(icmp)); - - ASSERT_NO_FATAL_FAILURE(ExpectICMPSuccess(icmp)); -} - -void RawSocketICMPTest::ExpectICMPSuccess(const struct icmphdr& icmp) { - // We're going to receive both the echo request and reply, but the order is - // indeterminate. - char recv_buf[kEmptyICMPSize]; - struct sockaddr_in src; - bool received_request = false; - bool received_reply = false; - - for (int i = 0; i < 2; i++) { - // Receive the packet. - ASSERT_NO_FATAL_FAILURE(ReceiveICMP(recv_buf, ABSL_ARRAYSIZE(recv_buf), - sizeof(struct icmphdr), &src)); - EXPECT_EQ(memcmp(&src, &addr_, sizeof(src)), 0); - struct icmphdr* recvd_icmp = - reinterpret_cast<struct icmphdr*>(recv_buf + sizeof(struct iphdr)); - switch (recvd_icmp->type) { - case ICMP_ECHO: - EXPECT_FALSE(received_request); - received_request = true; - // The packet should be identical to what we sent. - EXPECT_EQ(memcmp(recv_buf + sizeof(struct iphdr), &icmp, sizeof(icmp)), - 0); - break; - - case ICMP_ECHOREPLY: - EXPECT_FALSE(received_reply); - received_reply = true; - // Most fields should be the same. - EXPECT_EQ(recvd_icmp->code, icmp.code); - EXPECT_EQ(recvd_icmp->un.echo.sequence, icmp.un.echo.sequence); - EXPECT_EQ(recvd_icmp->un.echo.id, icmp.un.echo.id); - // A couple are different. - EXPECT_EQ(recvd_icmp->type, ICMP_ECHOREPLY); - // The checksum computed over the reply should still be valid. - EXPECT_EQ(ICMPChecksum(*recvd_icmp, NULL, 0), 0); - break; - } - } - - ASSERT_TRUE(received_request); - ASSERT_TRUE(received_reply); -} - -void RawSocketICMPTest::SendEmptyICMP(const struct icmphdr& icmp) { - ASSERT_NO_FATAL_FAILURE(SendEmptyICMPTo(s_, addr_, icmp)); -} - -void RawSocketICMPTest::SendEmptyICMPTo(int sock, - const struct sockaddr_in& addr, - const struct icmphdr& icmp) { - // It's safe to use const_cast here because sendmsg won't modify the iovec or - // address. - struct iovec iov = {}; - iov.iov_base = static_cast<void*>(const_cast<struct icmphdr*>(&icmp)); - iov.iov_len = sizeof(icmp); - struct msghdr msg = {}; - msg.msg_name = static_cast<void*>(const_cast<struct sockaddr_in*>(&addr)); - msg.msg_namelen = sizeof(addr); - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - msg.msg_control = NULL; - msg.msg_controllen = 0; - msg.msg_flags = 0; - ASSERT_THAT(sendmsg(sock, &msg, 0), SyscallSucceedsWithValue(sizeof(icmp))); -} - -void RawSocketICMPTest::ReceiveICMP(char* recv_buf, size_t recv_buf_len, - size_t expected_size, - struct sockaddr_in* src) { - ASSERT_NO_FATAL_FAILURE( - ReceiveICMPFrom(recv_buf, recv_buf_len, expected_size, src, s_)); -} - -void RawSocketICMPTest::ReceiveICMPFrom(char* recv_buf, size_t recv_buf_len, - size_t expected_size, - struct sockaddr_in* src, int sock) { - struct iovec iov = {}; - iov.iov_base = recv_buf; - iov.iov_len = recv_buf_len; - struct msghdr msg = {}; - msg.msg_name = src; - msg.msg_namelen = sizeof(*src); - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - msg.msg_control = NULL; - msg.msg_controllen = 0; - msg.msg_flags = 0; - // We should receive the ICMP packet plus 20 bytes of IP header. - ASSERT_THAT(recvmsg(sock, &msg, 0), - SyscallSucceedsWithValue(expected_size + sizeof(struct iphdr))); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/raw_socket_ipv4.cc b/test/syscalls/linux/raw_socket_ipv4.cc deleted file mode 100644 index cde2f07c9..000000000 --- a/test/syscalls/linux/raw_socket_ipv4.cc +++ /dev/null @@ -1,392 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <linux/capability.h> -#include <netinet/in.h> -#include <netinet/ip.h> -#include <netinet/ip_icmp.h> -#include <poll.h> -#include <sys/socket.h> -#include <sys/types.h> -#include <unistd.h> - -#include <algorithm> - -#include "gtest/gtest.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/capability_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/test_util.h" - -// Note: in order to run these tests, /proc/sys/net/ipv4/ping_group_range will -// need to be configured to let the superuser create ping sockets (see icmp(7)). - -namespace gvisor { -namespace testing { - -namespace { - -// Fixture for tests parameterized by protocol. -class RawSocketTest : public ::testing::TestWithParam<int> { - protected: - // Creates a socket to be used in tests. - void SetUp() override; - - // Closes the socket created by SetUp(). - void TearDown() override; - - // Sends buf via s_. - void SendBuf(const char* buf, int buf_len); - - // Sends buf to the provided address via the provided socket. - void SendBufTo(int sock, const struct sockaddr_in& addr, const char* buf, - int buf_len); - - // Reads from s_ into recv_buf. - void ReceiveBuf(char* recv_buf, size_t recv_buf_len); - - int Protocol() { return GetParam(); } - - // The socket used for both reading and writing. - int s_; - - // The loopback address. - struct sockaddr_in addr_; -}; - -void RawSocketTest::SetUp() { - if (!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))) { - ASSERT_THAT(socket(AF_INET, SOCK_RAW, Protocol()), - SyscallFailsWithErrno(EPERM)); - GTEST_SKIP(); - } - - ASSERT_THAT(s_ = socket(AF_INET, SOCK_RAW, Protocol()), SyscallSucceeds()); - - addr_ = {}; - - // We don't set ports because raw sockets don't have a notion of ports. - addr_.sin_addr.s_addr = htonl(INADDR_LOOPBACK); - addr_.sin_family = AF_INET; -} - -void RawSocketTest::TearDown() { - // TearDown will be run even if we skip the test. - if (ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))) { - EXPECT_THAT(close(s_), SyscallSucceeds()); - } -} - -// We should be able to create multiple raw sockets for the same protocol. -// BasicRawSocket::Setup creates the first one, so we only have to create one -// more here. -TEST_P(RawSocketTest, MultipleCreation) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))); - - int s2; - ASSERT_THAT(s2 = socket(AF_INET, SOCK_RAW, Protocol()), SyscallSucceeds()); - - ASSERT_THAT(close(s2), SyscallSucceeds()); -} - -// Test that shutting down an unconnected socket fails. -TEST_P(RawSocketTest, FailShutdownWithoutConnect) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))); - - ASSERT_THAT(shutdown(s_, SHUT_WR), SyscallFailsWithErrno(ENOTCONN)); - ASSERT_THAT(shutdown(s_, SHUT_RD), SyscallFailsWithErrno(ENOTCONN)); -} - -// Shutdown is a no-op for raw sockets (and datagram sockets in general). -TEST_P(RawSocketTest, ShutdownWriteNoop) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))); - - ASSERT_THAT( - connect(s_, reinterpret_cast<struct sockaddr*>(&addr_), sizeof(addr_)), - SyscallSucceeds()); - ASSERT_THAT(shutdown(s_, SHUT_WR), SyscallSucceeds()); - - // Arbitrary. - constexpr char kBuf[] = "noop"; - ASSERT_THAT(RetryEINTR(write)(s_, kBuf, sizeof(kBuf)), - SyscallSucceedsWithValue(sizeof(kBuf))); -} - -// Shutdown is a no-op for raw sockets (and datagram sockets in general). -TEST_P(RawSocketTest, ShutdownReadNoop) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))); - - ASSERT_THAT( - connect(s_, reinterpret_cast<struct sockaddr*>(&addr_), sizeof(addr_)), - SyscallSucceeds()); - ASSERT_THAT(shutdown(s_, SHUT_RD), SyscallSucceeds()); - - // Arbitrary. - constexpr char kBuf[] = "gdg"; - ASSERT_NO_FATAL_FAILURE(SendBuf(kBuf, sizeof(kBuf))); - - constexpr size_t kReadSize = sizeof(kBuf) + sizeof(struct iphdr); - char c[kReadSize]; - ASSERT_THAT(read(s_, &c, sizeof(c)), SyscallSucceedsWithValue(kReadSize)); -} - -// Test that listen() fails. -TEST_P(RawSocketTest, FailListen) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))); - - ASSERT_THAT(listen(s_, 1), SyscallFailsWithErrno(ENOTSUP)); -} - -// Test that accept() fails. -TEST_P(RawSocketTest, FailAccept) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))); - - struct sockaddr saddr; - socklen_t addrlen; - ASSERT_THAT(accept(s_, &saddr, &addrlen), SyscallFailsWithErrno(ENOTSUP)); -} - -// Test that getpeername() returns nothing before connect(). -TEST_P(RawSocketTest, FailGetPeerNameBeforeConnect) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))); - - struct sockaddr saddr; - socklen_t addrlen = sizeof(saddr); - ASSERT_THAT(getpeername(s_, &saddr, &addrlen), - SyscallFailsWithErrno(ENOTCONN)); -} - -// Test that getpeername() returns something after connect(). -TEST_P(RawSocketTest, GetPeerName) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))); - - ASSERT_THAT( - connect(s_, reinterpret_cast<struct sockaddr*>(&addr_), sizeof(addr_)), - SyscallSucceeds()); - struct sockaddr saddr; - socklen_t addrlen = sizeof(saddr); - ASSERT_THAT(getpeername(s_, &saddr, &addrlen), - SyscallFailsWithErrno(ENOTCONN)); - ASSERT_GT(addrlen, 0); -} - -// Test that the socket is writable immediately. -TEST_P(RawSocketTest, PollWritableImmediately) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))); - - struct pollfd pfd = {}; - pfd.fd = s_; - pfd.events = POLLOUT; - ASSERT_THAT(RetryEINTR(poll)(&pfd, 1, 10000), SyscallSucceedsWithValue(1)); -} - -// Test that the socket isn't readable before receiving anything. -TEST_P(RawSocketTest, PollNotReadableInitially) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))); - - // Try to receive data with MSG_DONTWAIT, which returns immediately if there's - // nothing to be read. - char buf[117]; - ASSERT_THAT(RetryEINTR(recv)(s_, buf, sizeof(buf), MSG_DONTWAIT), - SyscallFailsWithErrno(EAGAIN)); -} - -// Test that the socket becomes readable once something is written to it. -TEST_P(RawSocketTest, PollTriggeredOnWrite) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))); - - // Write something so that there's data to be read. - // Arbitrary. - constexpr char kBuf[] = "JP5"; - ASSERT_NO_FATAL_FAILURE(SendBuf(kBuf, sizeof(kBuf))); - - struct pollfd pfd = {}; - pfd.fd = s_; - pfd.events = POLLIN; - ASSERT_THAT(RetryEINTR(poll)(&pfd, 1, 10000), SyscallSucceedsWithValue(1)); -} - -// Test that we can connect() to a valid IP (loopback). -TEST_P(RawSocketTest, ConnectToLoopback) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))); - - ASSERT_THAT( - connect(s_, reinterpret_cast<struct sockaddr*>(&addr_), sizeof(addr_)), - SyscallSucceeds()); -} - -// Test that calling send() without connect() fails. -TEST_P(RawSocketTest, SendWithoutConnectFails) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))); - - // Arbitrary. - constexpr char kBuf[] = "Endgame was good"; - ASSERT_THAT(send(s_, kBuf, sizeof(kBuf), 0), - SyscallFailsWithErrno(EDESTADDRREQ)); -} - -// Bind to localhost. -TEST_P(RawSocketTest, BindToLocalhost) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))); - - ASSERT_THAT( - bind(s_, reinterpret_cast<struct sockaddr*>(&addr_), sizeof(addr_)), - SyscallSucceeds()); -} - -// Bind to a different address. -TEST_P(RawSocketTest, BindToInvalid) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))); - - struct sockaddr_in bind_addr = {}; - bind_addr.sin_family = AF_INET; - bind_addr.sin_addr = {1}; // 1.0.0.0 - An address that we can't bind to. - ASSERT_THAT(bind(s_, reinterpret_cast<struct sockaddr*>(&bind_addr), - sizeof(bind_addr)), - SyscallFailsWithErrno(EADDRNOTAVAIL)); -} - -// Send and receive an packet. -TEST_P(RawSocketTest, SendAndReceive) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))); - - // Arbitrary. - constexpr char kBuf[] = "TB12"; - ASSERT_NO_FATAL_FAILURE(SendBuf(kBuf, sizeof(kBuf))); - - // Receive the packet and make sure it's identical. - char recv_buf[sizeof(kBuf) + sizeof(struct iphdr)]; - ASSERT_NO_FATAL_FAILURE(ReceiveBuf(recv_buf, sizeof(recv_buf))); - EXPECT_EQ(memcmp(recv_buf + sizeof(struct iphdr), kBuf, sizeof(kBuf)), 0); -} - -// We should be able to create multiple raw sockets for the same protocol and -// receive the same packet on both. -TEST_P(RawSocketTest, MultipleSocketReceive) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))); - - int s2; - ASSERT_THAT(s2 = socket(AF_INET, SOCK_RAW, Protocol()), SyscallSucceeds()); - - // Arbitrary. - constexpr char kBuf[] = "TB10"; - ASSERT_NO_FATAL_FAILURE(SendBuf(kBuf, sizeof(kBuf))); - - // Receive it on socket 1. - char recv_buf1[sizeof(kBuf) + sizeof(struct iphdr)]; - ASSERT_NO_FATAL_FAILURE(ReceiveBuf(recv_buf1, sizeof(recv_buf1))); - - // Receive it on socket 2. - char recv_buf2[sizeof(kBuf) + sizeof(struct iphdr)]; - ASSERT_NO_FATAL_FAILURE(RecvNoCmsg(s2, recv_buf2, sizeof(recv_buf2))); - - EXPECT_EQ(memcmp(recv_buf1 + sizeof(struct iphdr), - recv_buf2 + sizeof(struct iphdr), sizeof(kBuf)), - 0); - - ASSERT_THAT(close(s2), SyscallSucceeds()); -} - -// Test that connect sends packets to the right place. -TEST_P(RawSocketTest, SendAndReceiveViaConnect) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))); - - ASSERT_THAT( - connect(s_, reinterpret_cast<struct sockaddr*>(&addr_), sizeof(addr_)), - SyscallSucceeds()); - - // Arbitrary. - constexpr char kBuf[] = "JH4"; - ASSERT_THAT(send(s_, kBuf, sizeof(kBuf), 0), - SyscallSucceedsWithValue(sizeof(kBuf))); - - // Receive the packet and make sure it's identical. - char recv_buf[sizeof(kBuf) + sizeof(struct iphdr)]; - ASSERT_NO_FATAL_FAILURE(ReceiveBuf(recv_buf, sizeof(recv_buf))); - EXPECT_EQ(memcmp(recv_buf + sizeof(struct iphdr), kBuf, sizeof(kBuf)), 0); -} - -// Bind to localhost, then send and receive packets. -TEST_P(RawSocketTest, BindSendAndReceive) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))); - - ASSERT_THAT( - bind(s_, reinterpret_cast<struct sockaddr*>(&addr_), sizeof(addr_)), - SyscallSucceeds()); - - // Arbitrary. - constexpr char kBuf[] = "DR16"; - ASSERT_NO_FATAL_FAILURE(SendBuf(kBuf, sizeof(kBuf))); - - // Receive the packet and make sure it's identical. - char recv_buf[sizeof(kBuf) + sizeof(struct iphdr)]; - ASSERT_NO_FATAL_FAILURE(ReceiveBuf(recv_buf, sizeof(recv_buf))); - EXPECT_EQ(memcmp(recv_buf + sizeof(struct iphdr), kBuf, sizeof(kBuf)), 0); -} - -// Bind and connect to localhost and send/receive packets. -TEST_P(RawSocketTest, BindConnectSendAndReceive) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))); - - ASSERT_THAT( - bind(s_, reinterpret_cast<struct sockaddr*>(&addr_), sizeof(addr_)), - SyscallSucceeds()); - ASSERT_THAT( - connect(s_, reinterpret_cast<struct sockaddr*>(&addr_), sizeof(addr_)), - SyscallSucceeds()); - - // Arbitrary. - constexpr char kBuf[] = "DG88"; - ASSERT_NO_FATAL_FAILURE(SendBuf(kBuf, sizeof(kBuf))); - - // Receive the packet and make sure it's identical. - char recv_buf[sizeof(kBuf) + sizeof(struct iphdr)]; - ASSERT_NO_FATAL_FAILURE(ReceiveBuf(recv_buf, sizeof(recv_buf))); - EXPECT_EQ(memcmp(recv_buf + sizeof(struct iphdr), kBuf, sizeof(kBuf)), 0); -} - -void RawSocketTest::SendBuf(const char* buf, int buf_len) { - ASSERT_NO_FATAL_FAILURE(SendBufTo(s_, addr_, buf, buf_len)); -} - -void RawSocketTest::SendBufTo(int sock, const struct sockaddr_in& addr, - const char* buf, int buf_len) { - // It's safe to use const_cast here because sendmsg won't modify the iovec or - // address. - struct iovec iov = {}; - iov.iov_base = static_cast<void*>(const_cast<char*>(buf)); - iov.iov_len = static_cast<size_t>(buf_len); - struct msghdr msg = {}; - msg.msg_name = static_cast<void*>(const_cast<struct sockaddr_in*>(&addr)); - msg.msg_namelen = sizeof(addr); - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - msg.msg_control = NULL; - msg.msg_controllen = 0; - msg.msg_flags = 0; - ASSERT_THAT(sendmsg(sock, &msg, 0), SyscallSucceedsWithValue(buf_len)); -} - -void RawSocketTest::ReceiveBuf(char* recv_buf, size_t recv_buf_len) { - ASSERT_NO_FATAL_FAILURE(RecvNoCmsg(s_, recv_buf, recv_buf_len)); -} - -INSTANTIATE_TEST_SUITE_P(AllInetTests, RawSocketTest, - ::testing::Values(IPPROTO_TCP, IPPROTO_UDP)); - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/read.cc b/test/syscalls/linux/read.cc deleted file mode 100644 index 2633ba31b..000000000 --- a/test/syscalls/linux/read.cc +++ /dev/null @@ -1,118 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <fcntl.h> -#include <unistd.h> - -#include <vector> - -#include "gtest/gtest.h" -#include "test/util/file_descriptor.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -class ReadTest : public ::testing::Test { - void SetUp() override { - name_ = NewTempAbsPath(); - int fd; - ASSERT_THAT(fd = open(name_.c_str(), O_CREAT, 0644), SyscallSucceeds()); - ASSERT_THAT(close(fd), SyscallSucceeds()); - } - - void TearDown() override { unlink(name_.c_str()); } - - public: - std::string name_; -}; - -TEST_F(ReadTest, ZeroBuffer) { - int fd; - ASSERT_THAT(fd = open(name_.c_str(), O_RDWR), SyscallSucceeds()); - - char msg[] = "hello world"; - EXPECT_THAT(PwriteFd(fd, msg, strlen(msg), 0), - SyscallSucceedsWithValue(strlen(msg))); - - char buf[10]; - EXPECT_THAT(ReadFd(fd, buf, 0), SyscallSucceedsWithValue(0)); - EXPECT_THAT(close(fd), SyscallSucceeds()); -} - -TEST_F(ReadTest, EmptyFileReturnsZeroAtEOF) { - int fd; - ASSERT_THAT(fd = open(name_.c_str(), O_RDWR), SyscallSucceeds()); - - char eof_buf[10]; - EXPECT_THAT(ReadFd(fd, eof_buf, 10), SyscallSucceedsWithValue(0)); - EXPECT_THAT(close(fd), SyscallSucceeds()); -} - -TEST_F(ReadTest, EofAfterRead) { - int fd; - ASSERT_THAT(fd = open(name_.c_str(), O_RDWR), SyscallSucceeds()); - - // Write some bytes to be read. - constexpr char kMessage[] = "hello world"; - EXPECT_THAT(PwriteFd(fd, kMessage, sizeof(kMessage), 0), - SyscallSucceedsWithValue(sizeof(kMessage))); - - // Read all of the bytes at once. - char buf[sizeof(kMessage)]; - EXPECT_THAT(ReadFd(fd, buf, sizeof(kMessage)), - SyscallSucceedsWithValue(sizeof(kMessage))); - - // Read again with a non-zero buffer and expect EOF. - char eof_buf[10]; - EXPECT_THAT(ReadFd(fd, eof_buf, 10), SyscallSucceedsWithValue(0)); - EXPECT_THAT(close(fd), SyscallSucceeds()); -} - -TEST_F(ReadTest, DevNullReturnsEof) { - int fd; - ASSERT_THAT(fd = open("/dev/null", O_RDONLY), SyscallSucceeds()); - std::vector<char> buf(1); - EXPECT_THAT(ReadFd(fd, buf.data(), 1), SyscallSucceedsWithValue(0)); - EXPECT_THAT(close(fd), SyscallSucceeds()); -} - -const int kReadSize = 128 * 1024; - -// Do not allow random save as it could lead to partial reads. -TEST_F(ReadTest, CanReadFullyFromDevZero_NoRandomSave) { - int fd; - ASSERT_THAT(fd = open("/dev/zero", O_RDONLY), SyscallSucceeds()); - - std::vector<char> buf(kReadSize, 1); - EXPECT_THAT(ReadFd(fd, buf.data(), kReadSize), - SyscallSucceedsWithValue(kReadSize)); - EXPECT_THAT(close(fd), SyscallSucceeds()); - EXPECT_EQ(std::vector<char>(kReadSize, 0), buf); -} - -TEST_F(ReadTest, ReadDirectoryFails) { - const FileDescriptor file = - ASSERT_NO_ERRNO_AND_VALUE(Open(GetAbsoluteTestTmpdir(), O_RDONLY)); - std::vector<char> buf(1); - EXPECT_THAT(ReadFd(file.get(), buf.data(), 1), SyscallFailsWithErrno(EISDIR)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/readahead.cc b/test/syscalls/linux/readahead.cc deleted file mode 100644 index 09703b5c1..000000000 --- a/test/syscalls/linux/readahead.cc +++ /dev/null @@ -1,91 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <fcntl.h> - -#include "gtest/gtest.h" -#include "test/util/file_descriptor.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -TEST(ReadaheadTest, InvalidFD) { - EXPECT_THAT(readahead(-1, 1, 1), SyscallFailsWithErrno(EBADF)); -} - -TEST(ReadaheadTest, InvalidOffset) { - const TempPath in_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(in_file.path(), O_RDWR)); - EXPECT_THAT(readahead(fd.get(), -1, 1), SyscallFailsWithErrno(EINVAL)); -} - -TEST(ReadaheadTest, ValidOffset) { - constexpr char kData[] = "123"; - const TempPath in_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), kData, TempPath::kDefaultFileMode)); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(in_file.path(), O_RDWR)); - - // N.B. The implementation of readahead is filesystem-specific, and a file - // backed by ram may return EINVAL because there is nothing to be read. - EXPECT_THAT(readahead(fd.get(), 1, 1), AnyOf(SyscallSucceedsWithValue(0), - SyscallFailsWithErrno(EINVAL))); -} - -TEST(ReadaheadTest, PastEnd) { - constexpr char kData[] = "123"; - const TempPath in_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), kData, TempPath::kDefaultFileMode)); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(in_file.path(), O_RDWR)); - // See above. - EXPECT_THAT(readahead(fd.get(), 2, 2), AnyOf(SyscallSucceedsWithValue(0), - SyscallFailsWithErrno(EINVAL))); -} - -TEST(ReadaheadTest, CrossesEnd) { - constexpr char kData[] = "123"; - const TempPath in_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), kData, TempPath::kDefaultFileMode)); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(in_file.path(), O_RDWR)); - // See above. - EXPECT_THAT(readahead(fd.get(), 4, 2), AnyOf(SyscallSucceedsWithValue(0), - SyscallFailsWithErrno(EINVAL))); -} - -TEST(ReadaheadTest, WriteOnly) { - const TempPath in_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(in_file.path(), O_WRONLY)); - EXPECT_THAT(readahead(fd.get(), 0, 1), SyscallFailsWithErrno(EBADF)); -} - -TEST(ReadaheadTest, InvalidSize) { - const TempPath in_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(in_file.path(), O_RDWR)); - EXPECT_THAT(readahead(fd.get(), 0, -1), SyscallFailsWithErrno(EINVAL)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/readv.cc b/test/syscalls/linux/readv.cc deleted file mode 100644 index baaf9f757..000000000 --- a/test/syscalls/linux/readv.cc +++ /dev/null @@ -1,294 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <fcntl.h> -#include <limits.h> -#include <sys/types.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "test/syscalls/linux/file_base.h" -#include "test/syscalls/linux/readv_common.h" -#include "test/util/file_descriptor.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" -#include "test/util/timer_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -class ReadvTest : public FileTest { - void SetUp() override { - FileTest::SetUp(); - - ASSERT_THAT(write(test_file_fd_.get(), kReadvTestData, kReadvTestDataSize), - SyscallSucceedsWithValue(kReadvTestDataSize)); - ASSERT_THAT(lseek(test_file_fd_.get(), 0, SEEK_SET), - SyscallSucceedsWithValue(0)); - ASSERT_THAT(write(test_pipe_[1], kReadvTestData, kReadvTestDataSize), - SyscallSucceedsWithValue(kReadvTestDataSize)); - } -}; - -TEST_F(ReadvTest, ReadOneBufferPerByte_File) { - ReadOneBufferPerByte(test_file_fd_.get()); -} - -TEST_F(ReadvTest, ReadOneBufferPerByte_Pipe) { - ReadOneBufferPerByte(test_pipe_[0]); -} - -TEST_F(ReadvTest, ReadOneHalfAtATime_File) { - ReadOneHalfAtATime(test_file_fd_.get()); -} - -TEST_F(ReadvTest, ReadOneHalfAtATime_Pipe) { - ReadOneHalfAtATime(test_pipe_[0]); -} - -TEST_F(ReadvTest, ReadAllOneBuffer_File) { - ReadAllOneBuffer(test_file_fd_.get()); -} - -TEST_F(ReadvTest, ReadAllOneBuffer_Pipe) { ReadAllOneBuffer(test_pipe_[0]); } - -TEST_F(ReadvTest, ReadAllOneLargeBuffer_File) { - ReadAllOneLargeBuffer(test_file_fd_.get()); -} - -TEST_F(ReadvTest, ReadAllOneLargeBuffer_Pipe) { - ReadAllOneLargeBuffer(test_pipe_[0]); -} - -TEST_F(ReadvTest, ReadBuffersOverlapping_File) { - ReadBuffersOverlapping(test_file_fd_.get()); -} - -TEST_F(ReadvTest, ReadBuffersOverlapping_Pipe) { - ReadBuffersOverlapping(test_pipe_[0]); -} - -TEST_F(ReadvTest, ReadBuffersDiscontinuous_File) { - ReadBuffersDiscontinuous(test_file_fd_.get()); -} - -TEST_F(ReadvTest, ReadBuffersDiscontinuous_Pipe) { - ReadBuffersDiscontinuous(test_pipe_[0]); -} - -TEST_F(ReadvTest, ReadIovecsCompletelyFilled_File) { - ReadIovecsCompletelyFilled(test_file_fd_.get()); -} - -TEST_F(ReadvTest, ReadIovecsCompletelyFilled_Pipe) { - ReadIovecsCompletelyFilled(test_pipe_[0]); -} - -TEST_F(ReadvTest, BadFileDescriptor) { - char buffer[1024]; - struct iovec iov[1]; - iov[0].iov_base = buffer; - iov[0].iov_len = 1024; - - ASSERT_THAT(readv(-1, iov, 1024), SyscallFailsWithErrno(EBADF)); -} - -TEST_F(ReadvTest, BadIovecsPointer_File) { - ASSERT_THAT(readv(test_file_fd_.get(), nullptr, 1), - SyscallFailsWithErrno(EFAULT)); -} - -TEST_F(ReadvTest, BadIovecsPointer_Pipe) { - ASSERT_THAT(readv(test_pipe_[0], nullptr, 1), SyscallFailsWithErrno(EFAULT)); -} - -TEST_F(ReadvTest, BadIovecBase_File) { - struct iovec iov[1]; - iov[0].iov_base = nullptr; - iov[0].iov_len = 1024; - ASSERT_THAT(readv(test_file_fd_.get(), iov, 1), - SyscallFailsWithErrno(EFAULT)); -} - -TEST_F(ReadvTest, BadIovecBase_Pipe) { - struct iovec iov[1]; - iov[0].iov_base = nullptr; - iov[0].iov_len = 1024; - ASSERT_THAT(readv(test_pipe_[0], iov, 1), SyscallFailsWithErrno(EFAULT)); -} - -TEST_F(ReadvTest, ZeroIovecs_File) { - struct iovec iov[1]; - iov[0].iov_base = 0; - iov[0].iov_len = 0; - ASSERT_THAT(readv(test_file_fd_.get(), iov, 1), SyscallSucceeds()); -} - -TEST_F(ReadvTest, ZeroIovecs_Pipe) { - struct iovec iov[1]; - iov[0].iov_base = 0; - iov[0].iov_len = 0; - ASSERT_THAT(readv(test_pipe_[0], iov, 1), SyscallSucceeds()); -} - -TEST_F(ReadvTest, NotReadable_File) { - char buffer[1024]; - struct iovec iov[1]; - iov[0].iov_base = buffer; - iov[0].iov_len = 1024; - - std::string wronly_file = NewTempAbsPath(); - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE( - Open(wronly_file, O_CREAT | O_WRONLY, S_IRUSR | S_IWUSR)); - ASSERT_THAT(readv(fd.get(), iov, 1), SyscallFailsWithErrno(EBADF)); - fd.reset(); // Close before unlinking. - ASSERT_THAT(unlink(wronly_file.c_str()), SyscallSucceeds()); -} - -TEST_F(ReadvTest, NotReadable_Pipe) { - char buffer[1024]; - struct iovec iov[1]; - iov[0].iov_base = buffer; - iov[0].iov_len = 1024; - ASSERT_THAT(readv(test_pipe_[1], iov, 1), SyscallFailsWithErrno(EBADF)); -} - -TEST_F(ReadvTest, DirNotReadable) { - char buffer[1024]; - struct iovec iov[1]; - iov[0].iov_base = buffer; - iov[0].iov_len = 1024; - - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(GetAbsoluteTestTmpdir(), O_RDONLY)); - ASSERT_THAT(readv(fd.get(), iov, 1), SyscallFailsWithErrno(EISDIR)); -} - -TEST_F(ReadvTest, OffsetIncremented) { - char* buffer = reinterpret_cast<char*>(malloc(kReadvTestDataSize)); - struct iovec iov[1]; - iov[0].iov_base = buffer; - iov[0].iov_len = kReadvTestDataSize; - - ASSERT_THAT(readv(test_file_fd_.get(), iov, 1), - SyscallSucceedsWithValue(kReadvTestDataSize)); - ASSERT_THAT(lseek(test_file_fd_.get(), 0, SEEK_CUR), - SyscallSucceedsWithValue(kReadvTestDataSize)); - - free(buffer); -} - -TEST_F(ReadvTest, EndOfFile) { - char* buffer = reinterpret_cast<char*>(malloc(kReadvTestDataSize)); - struct iovec iov[1]; - iov[0].iov_base = buffer; - iov[0].iov_len = kReadvTestDataSize; - ASSERT_THAT(readv(test_file_fd_.get(), iov, 1), - SyscallSucceedsWithValue(kReadvTestDataSize)); - free(buffer); - - buffer = reinterpret_cast<char*>(malloc(kReadvTestDataSize)); - iov[0].iov_base = buffer; - iov[0].iov_len = kReadvTestDataSize; - ASSERT_THAT(readv(test_file_fd_.get(), iov, 1), SyscallSucceedsWithValue(0)); - free(buffer); -} - -TEST_F(ReadvTest, WouldBlock_Pipe) { - struct iovec iov[1]; - iov[0].iov_base = reinterpret_cast<char*>(malloc(kReadvTestDataSize)); - iov[0].iov_len = kReadvTestDataSize; - ASSERT_THAT(readv(test_pipe_[0], iov, 1), - SyscallSucceedsWithValue(kReadvTestDataSize)); - free(iov[0].iov_base); - - iov[0].iov_base = reinterpret_cast<char*>(malloc(kReadvTestDataSize)); - ASSERT_THAT(readv(test_pipe_[0], iov, 1), SyscallFailsWithErrno(EAGAIN)); - free(iov[0].iov_base); -} - -TEST_F(ReadvTest, ZeroBuffer) { - char buf[10]; - struct iovec iov[1]; - iov[0].iov_base = buf; - iov[0].iov_len = 0; - ASSERT_THAT(readv(test_pipe_[0], iov, 1), SyscallSucceedsWithValue(0)); -} - -TEST_F(ReadvTest, NullIovecInNonemptyArray) { - std::vector<char> buf(kReadvTestDataSize); - struct iovec iov[2]; - iov[0].iov_base = nullptr; - iov[0].iov_len = 0; - iov[1].iov_base = buf.data(); - iov[1].iov_len = kReadvTestDataSize; - ASSERT_THAT(readv(test_file_fd_.get(), iov, 2), - SyscallSucceedsWithValue(kReadvTestDataSize)); -} - -TEST_F(ReadvTest, IovecOutsideTaskAddressRangeInNonemptyArray) { - std::vector<char> buf(kReadvTestDataSize); - struct iovec iov[2]; - iov[0].iov_base = reinterpret_cast<void*>(~static_cast<uintptr_t>(0)); - iov[0].iov_len = 0; - iov[1].iov_base = buf.data(); - iov[1].iov_len = kReadvTestDataSize; - ASSERT_THAT(readv(test_file_fd_.get(), iov, 2), - SyscallFailsWithErrno(EFAULT)); -} - -// This test depends on the maximum extent of a single readv() syscall, so -// we can't tolerate interruption from saving. -TEST(ReadvTestNoFixture, TruncatedAtMax_NoRandomSave) { - // Ensure that we won't be interrupted by ITIMER_PROF. This is particularly - // important in environments where automated profiling tools may start - // ITIMER_PROF automatically. - struct itimerval itv = {}; - auto const cleanup_itimer = - ASSERT_NO_ERRNO_AND_VALUE(ScopedItimer(ITIMER_PROF, itv)); - - // From Linux's include/linux/fs.h. - size_t const MAX_RW_COUNT = INT_MAX & ~(kPageSize - 1); - - // Create an iovec array with 3 segments pointing to consecutive parts of a - // buffer. The first covers all but the last three pages, and should be - // written to in its entirety. The second covers the last page before - // MAX_RW_COUNT and the first page after; only the first page should be - // written to. The third covers the last page of the buffer, and should be - // skipped entirely. - size_t const kBufferSize = MAX_RW_COUNT + 2 * kPageSize; - size_t const kFirstOffset = MAX_RW_COUNT - kPageSize; - size_t const kSecondOffset = MAX_RW_COUNT + kPageSize; - // The buffer is too big to fit on the stack. - std::vector<char> buf(kBufferSize); - struct iovec iov[3]; - iov[0].iov_base = buf.data(); - iov[0].iov_len = kFirstOffset; - iov[1].iov_base = buf.data() + kFirstOffset; - iov[1].iov_len = kSecondOffset - kFirstOffset; - iov[2].iov_base = buf.data() + kSecondOffset; - iov[2].iov_len = kBufferSize - kSecondOffset; - - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/zero", O_RDONLY)); - EXPECT_THAT(readv(fd.get(), iov, 3), SyscallSucceedsWithValue(MAX_RW_COUNT)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/readv_common.cc b/test/syscalls/linux/readv_common.cc deleted file mode 100644 index 2694dc64f..000000000 --- a/test/syscalls/linux/readv_common.cc +++ /dev/null @@ -1,220 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <fcntl.h> -#include <sys/socket.h> -#include <sys/types.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -// MatchesStringLength checks that a tuple argument of (struct iovec *, int) -// corresponding to an iovec array and its length, contains data that matches -// the string length strlen. -MATCHER_P(MatchesStringLength, strlen, "") { - struct iovec* iovs = arg.first; - int niov = arg.second; - int offset = 0; - for (int i = 0; i < niov; i++) { - offset += iovs[i].iov_len; - } - if (offset != static_cast<int>(strlen)) { - *result_listener << offset; - return false; - } - return true; -} - -// MatchesStringValue checks that a tuple argument of (struct iovec *, int) -// corresponding to an iovec array and its length, contains data that matches -// the string value str. -MATCHER_P(MatchesStringValue, str, "") { - struct iovec* iovs = arg.first; - int len = strlen(str); - int niov = arg.second; - int offset = 0; - for (int i = 0; i < niov; i++) { - struct iovec iov = iovs[i]; - if (len < offset) { - *result_listener << "strlen " << len << " < offset " << offset; - return false; - } - if (strncmp(static_cast<char*>(iov.iov_base), &str[offset], iov.iov_len)) { - absl::string_view iovec_string(static_cast<char*>(iov.iov_base), - iov.iov_len); - *result_listener << iovec_string << " @offset " << offset; - return false; - } - offset += iov.iov_len; - } - return true; -} - -extern const char kReadvTestData[] = - "127.0.0.1 localhost" - "" - "# The following lines are desirable for IPv6 capable hosts" - "::1 ip6-localhost ip6-loopback" - "fe00::0 ip6-localnet" - "ff00::0 ip6-mcastprefix" - "ff02::1 ip6-allnodes" - "ff02::2 ip6-allrouters" - "ff02::3 ip6-allhosts" - "192.168.1.100 a" - "93.184.216.34 foo.bar.example.com xcpu"; -extern const size_t kReadvTestDataSize = sizeof(kReadvTestData); - -static void ReadAllOneProvidedBuffer(int fd, std::vector<char>* buffer) { - struct iovec iovs[1]; - iovs[0].iov_base = buffer->data(); - iovs[0].iov_len = kReadvTestDataSize; - - ASSERT_THAT(readv(fd, iovs, 1), SyscallSucceedsWithValue(kReadvTestDataSize)); - - std::pair<struct iovec*, int> iovec_desc(iovs, 1); - EXPECT_THAT(iovec_desc, MatchesStringLength(kReadvTestDataSize)); - EXPECT_THAT(iovec_desc, MatchesStringValue(kReadvTestData)); -} - -void ReadAllOneBuffer(int fd) { - std::vector<char> buffer(kReadvTestDataSize); - ReadAllOneProvidedBuffer(fd, &buffer); -} - -void ReadAllOneLargeBuffer(int fd) { - std::vector<char> buffer(10 * kReadvTestDataSize); - ReadAllOneProvidedBuffer(fd, &buffer); -} - -void ReadOneHalfAtATime(int fd) { - int len0 = kReadvTestDataSize / 2; - int len1 = kReadvTestDataSize - len0; - std::vector<char> buffer0(len0); - std::vector<char> buffer1(len1); - - struct iovec iovs[2]; - iovs[0].iov_base = buffer0.data(); - iovs[0].iov_len = len0; - iovs[1].iov_base = buffer1.data(); - iovs[1].iov_len = len1; - - ASSERT_THAT(readv(fd, iovs, 2), SyscallSucceedsWithValue(kReadvTestDataSize)); - - std::pair<struct iovec*, int> iovec_desc(iovs, 2); - EXPECT_THAT(iovec_desc, MatchesStringLength(kReadvTestDataSize)); - EXPECT_THAT(iovec_desc, MatchesStringValue(kReadvTestData)); -} - -void ReadOneBufferPerByte(int fd) { - std::vector<char> buffer(kReadvTestDataSize); - std::vector<struct iovec> iovs(kReadvTestDataSize); - char* buffer_ptr = buffer.data(); - struct iovec* iovs_ptr = iovs.data(); - - for (int i = 0; i < static_cast<int>(kReadvTestDataSize); i++) { - struct iovec iov = { - .iov_base = &buffer_ptr[i], - .iov_len = 1, - }; - iovs_ptr[i] = iov; - } - - ASSERT_THAT(readv(fd, iovs_ptr, kReadvTestDataSize), - SyscallSucceedsWithValue(kReadvTestDataSize)); - - std::pair<struct iovec*, int> iovec_desc(iovs.data(), kReadvTestDataSize); - EXPECT_THAT(iovec_desc, MatchesStringLength(kReadvTestDataSize)); - EXPECT_THAT(iovec_desc, MatchesStringValue(kReadvTestData)); -} - -void ReadBuffersOverlapping(int fd) { - // overlap the first overlap_bytes. - int overlap_bytes = 8; - std::vector<char> buffer(kReadvTestDataSize); - - // overlapping causes us to get more data. - int expected_size = kReadvTestDataSize + overlap_bytes; - std::vector<char> expected(expected_size); - char* expected_ptr = expected.data(); - memcpy(expected_ptr, &kReadvTestData[overlap_bytes], overlap_bytes); - memcpy(&expected_ptr[overlap_bytes], &kReadvTestData[overlap_bytes], - kReadvTestDataSize - overlap_bytes); - - struct iovec iovs[2]; - iovs[0].iov_base = buffer.data(); - iovs[0].iov_len = overlap_bytes; - iovs[1].iov_base = buffer.data(); - iovs[1].iov_len = kReadvTestDataSize; - - ASSERT_THAT(readv(fd, iovs, 2), SyscallSucceedsWithValue(kReadvTestDataSize)); - - std::pair<struct iovec*, int> iovec_desc(iovs, 2); - EXPECT_THAT(iovec_desc, MatchesStringLength(expected_size)); - EXPECT_THAT(iovec_desc, MatchesStringValue(expected_ptr)); -} - -void ReadBuffersDiscontinuous(int fd) { - // Each iov is 1 byte separated by 1 byte. - std::vector<char> buffer(kReadvTestDataSize * 2); - std::vector<struct iovec> iovs(kReadvTestDataSize); - - char* buffer_ptr = buffer.data(); - struct iovec* iovs_ptr = iovs.data(); - - for (int i = 0; i < static_cast<int>(kReadvTestDataSize); i++) { - struct iovec iov = { - .iov_base = &buffer_ptr[i * 2], - .iov_len = 1, - }; - iovs_ptr[i] = iov; - } - - ASSERT_THAT(readv(fd, iovs_ptr, kReadvTestDataSize), - SyscallSucceedsWithValue(kReadvTestDataSize)); - - std::pair<struct iovec*, int> iovec_desc(iovs.data(), kReadvTestDataSize); - EXPECT_THAT(iovec_desc, MatchesStringLength(kReadvTestDataSize)); - EXPECT_THAT(iovec_desc, MatchesStringValue(kReadvTestData)); -} - -void ReadIovecsCompletelyFilled(int fd) { - int half = kReadvTestDataSize / 2; - std::vector<char> buffer(kReadvTestDataSize); - char* buffer_ptr = buffer.data(); - memset(buffer.data(), '\0', kReadvTestDataSize); - - struct iovec iovs[2]; - iovs[0].iov_base = buffer.data(); - iovs[0].iov_len = half; - iovs[1].iov_base = &buffer_ptr[half]; - iovs[1].iov_len = half; - - ASSERT_THAT(readv(fd, iovs, 2), SyscallSucceedsWithValue(half * 2)); - - std::pair<struct iovec*, int> iovec_desc(iovs, 2); - EXPECT_THAT(iovec_desc, MatchesStringLength(half * 2)); - EXPECT_THAT(iovec_desc, MatchesStringValue(kReadvTestData)); - - char* str = static_cast<char*>(iovs[0].iov_base); - str[iovs[0].iov_len - 1] = '\0'; - ASSERT_EQ(half - 1, strlen(str)); -} - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/readv_common.h b/test/syscalls/linux/readv_common.h deleted file mode 100644 index 2fa40c35f..000000000 --- a/test/syscalls/linux/readv_common.h +++ /dev/null @@ -1,61 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_SYSCALLS_READV_COMMON_H_ -#define GVISOR_TEST_SYSCALLS_READV_COMMON_H_ - -#include <stddef.h> - -namespace gvisor { -namespace testing { - -// A NUL-terminated string containing the data used by tests using the following -// test helpers. -extern const char kReadvTestData[]; - -// The size of kReadvTestData, including the terminating NUL. -extern const size_t kReadvTestDataSize; - -// ReadAllOneBuffer asserts that it can read kReadvTestData from an fd using -// exactly one iovec. -void ReadAllOneBuffer(int fd); - -// ReadAllOneLargeBuffer asserts that it can read kReadvTestData from an fd -// using exactly one iovec containing an overly large buffer. -void ReadAllOneLargeBuffer(int fd); - -// ReadOneHalfAtATime asserts that it can read test_data_from an fd using -// exactly two iovecs that are roughly equivalent in size. -void ReadOneHalfAtATime(int fd); - -// ReadOneBufferPerByte asserts that it can read kReadvTestData from an fd -// using one iovec per byte. -void ReadOneBufferPerByte(int fd); - -// ReadBuffersOverlapping asserts that it can read kReadvTestData from an fd -// where two iovecs are overlapping. -void ReadBuffersOverlapping(int fd); - -// ReadBuffersDiscontinuous asserts that it can read kReadvTestData from an fd -// where each iovec is discontinuous from the next by 1 byte. -void ReadBuffersDiscontinuous(int fd); - -// ReadIovecsCompletelyFilled asserts that the previous iovec is completely -// filled before moving onto the next. -void ReadIovecsCompletelyFilled(int fd); - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_SYSCALLS_READV_COMMON_H_ diff --git a/test/syscalls/linux/readv_socket.cc b/test/syscalls/linux/readv_socket.cc deleted file mode 100644 index dd6fb7008..000000000 --- a/test/syscalls/linux/readv_socket.cc +++ /dev/null @@ -1,212 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <fcntl.h> -#include <sys/socket.h> -#include <sys/types.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "test/syscalls/linux/readv_common.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -class ReadvSocketTest : public ::testing::Test { - public: - void SetUp() override { - test_unix_stream_socket_[0] = -1; - test_unix_stream_socket_[1] = -1; - test_unix_dgram_socket_[0] = -1; - test_unix_dgram_socket_[1] = -1; - test_unix_seqpacket_socket_[0] = -1; - test_unix_seqpacket_socket_[1] = -1; - - ASSERT_THAT(socketpair(AF_UNIX, SOCK_STREAM, 0, test_unix_stream_socket_), - SyscallSucceeds()); - ASSERT_THAT(fcntl(test_unix_stream_socket_[0], F_SETFL, O_NONBLOCK), - SyscallSucceeds()); - ASSERT_THAT(socketpair(AF_UNIX, SOCK_DGRAM, 0, test_unix_dgram_socket_), - SyscallSucceeds()); - ASSERT_THAT(fcntl(test_unix_dgram_socket_[0], F_SETFL, O_NONBLOCK), - SyscallSucceeds()); - ASSERT_THAT( - socketpair(AF_UNIX, SOCK_SEQPACKET, 0, test_unix_seqpacket_socket_), - SyscallSucceeds()); - ASSERT_THAT(fcntl(test_unix_seqpacket_socket_[0], F_SETFL, O_NONBLOCK), - SyscallSucceeds()); - - ASSERT_THAT( - write(test_unix_stream_socket_[1], kReadvTestData, kReadvTestDataSize), - SyscallSucceedsWithValue(kReadvTestDataSize)); - ASSERT_THAT( - write(test_unix_dgram_socket_[1], kReadvTestData, kReadvTestDataSize), - SyscallSucceedsWithValue(kReadvTestDataSize)); - ASSERT_THAT(write(test_unix_seqpacket_socket_[1], kReadvTestData, - kReadvTestDataSize), - SyscallSucceedsWithValue(kReadvTestDataSize)); - } - - void TearDown() override { - close(test_unix_stream_socket_[0]); - close(test_unix_stream_socket_[1]); - - close(test_unix_dgram_socket_[0]); - close(test_unix_dgram_socket_[1]); - - close(test_unix_seqpacket_socket_[0]); - close(test_unix_seqpacket_socket_[1]); - } - - int test_unix_stream_socket_[2]; - int test_unix_dgram_socket_[2]; - int test_unix_seqpacket_socket_[2]; -}; - -TEST_F(ReadvSocketTest, ReadOneBufferPerByte_StreamSocket) { - ReadOneBufferPerByte(test_unix_stream_socket_[0]); -} - -TEST_F(ReadvSocketTest, ReadOneBufferPerByte_DgramSocket) { - ReadOneBufferPerByte(test_unix_dgram_socket_[0]); -} - -TEST_F(ReadvSocketTest, ReadOneBufferPerByte_SeqPacketSocket) { - ReadOneBufferPerByte(test_unix_seqpacket_socket_[0]); -} - -TEST_F(ReadvSocketTest, ReadOneHalfAtATime_StreamSocket) { - ReadOneHalfAtATime(test_unix_stream_socket_[0]); -} - -TEST_F(ReadvSocketTest, ReadOneHalfAtATime_DgramSocket) { - ReadOneHalfAtATime(test_unix_dgram_socket_[0]); -} - -TEST_F(ReadvSocketTest, ReadAllOneBuffer_StreamSocket) { - ReadAllOneBuffer(test_unix_stream_socket_[0]); -} - -TEST_F(ReadvSocketTest, ReadAllOneBuffer_DgramSocket) { - ReadAllOneBuffer(test_unix_dgram_socket_[0]); -} - -TEST_F(ReadvSocketTest, ReadAllOneLargeBuffer_StreamSocket) { - ReadAllOneLargeBuffer(test_unix_stream_socket_[0]); -} - -TEST_F(ReadvSocketTest, ReadAllOneLargeBuffer_DgramSocket) { - ReadAllOneLargeBuffer(test_unix_dgram_socket_[0]); -} - -TEST_F(ReadvSocketTest, ReadBuffersOverlapping_StreamSocket) { - ReadBuffersOverlapping(test_unix_stream_socket_[0]); -} - -TEST_F(ReadvSocketTest, ReadBuffersOverlapping_DgramSocket) { - ReadBuffersOverlapping(test_unix_dgram_socket_[0]); -} - -TEST_F(ReadvSocketTest, ReadBuffersDiscontinuous_StreamSocket) { - ReadBuffersDiscontinuous(test_unix_stream_socket_[0]); -} - -TEST_F(ReadvSocketTest, ReadBuffersDiscontinuous_DgramSocket) { - ReadBuffersDiscontinuous(test_unix_dgram_socket_[0]); -} - -TEST_F(ReadvSocketTest, ReadIovecsCompletelyFilled_StreamSocket) { - ReadIovecsCompletelyFilled(test_unix_stream_socket_[0]); -} - -TEST_F(ReadvSocketTest, ReadIovecsCompletelyFilled_DgramSocket) { - ReadIovecsCompletelyFilled(test_unix_dgram_socket_[0]); -} - -TEST_F(ReadvSocketTest, BadIovecsPointer_StreamSocket) { - ASSERT_THAT(readv(test_unix_stream_socket_[0], nullptr, 1), - SyscallFailsWithErrno(EFAULT)); -} - -TEST_F(ReadvSocketTest, BadIovecsPointer_DgramSocket) { - ASSERT_THAT(readv(test_unix_dgram_socket_[0], nullptr, 1), - SyscallFailsWithErrno(EFAULT)); -} - -TEST_F(ReadvSocketTest, BadIovecBase_StreamSocket) { - struct iovec iov[1]; - iov[0].iov_base = nullptr; - iov[0].iov_len = 1024; - ASSERT_THAT(readv(test_unix_stream_socket_[0], iov, 1), - SyscallFailsWithErrno(EFAULT)); -} - -TEST_F(ReadvSocketTest, BadIovecBase_DgramSocket) { - struct iovec iov[1]; - iov[0].iov_base = nullptr; - iov[0].iov_len = 1024; - ASSERT_THAT(readv(test_unix_dgram_socket_[0], iov, 1), - SyscallFailsWithErrno(EFAULT)); -} - -TEST_F(ReadvSocketTest, ZeroIovecs_StreamSocket) { - struct iovec iov[1]; - iov[0].iov_base = 0; - iov[0].iov_len = 0; - ASSERT_THAT(readv(test_unix_stream_socket_[0], iov, 1), SyscallSucceeds()); -} - -TEST_F(ReadvSocketTest, ZeroIovecs_DgramSocket) { - struct iovec iov[1]; - iov[0].iov_base = 0; - iov[0].iov_len = 0; - ASSERT_THAT(readv(test_unix_dgram_socket_[0], iov, 1), SyscallSucceeds()); -} - -TEST_F(ReadvSocketTest, WouldBlock_StreamSocket) { - struct iovec iov[1]; - iov[0].iov_base = reinterpret_cast<char*>(malloc(kReadvTestDataSize)); - iov[0].iov_len = kReadvTestDataSize; - ASSERT_THAT(readv(test_unix_stream_socket_[0], iov, 1), - SyscallSucceedsWithValue(kReadvTestDataSize)); - free(iov[0].iov_base); - - iov[0].iov_base = reinterpret_cast<char*>(malloc(kReadvTestDataSize)); - ASSERT_THAT(readv(test_unix_stream_socket_[0], iov, 1), - SyscallFailsWithErrno(EAGAIN)); - free(iov[0].iov_base); -} - -TEST_F(ReadvSocketTest, WouldBlock_DgramSocket) { - struct iovec iov[1]; - iov[0].iov_base = reinterpret_cast<char*>(malloc(kReadvTestDataSize)); - iov[0].iov_len = kReadvTestDataSize; - ASSERT_THAT(readv(test_unix_dgram_socket_[0], iov, 1), - SyscallSucceedsWithValue(kReadvTestDataSize)); - free(iov[0].iov_base); - - iov[0].iov_base = reinterpret_cast<char*>(malloc(kReadvTestDataSize)); - ASSERT_THAT(readv(test_unix_dgram_socket_[0], iov, 1), - SyscallFailsWithErrno(EAGAIN)); - free(iov[0].iov_base); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/rename.cc b/test/syscalls/linux/rename.cc deleted file mode 100644 index 833c0dc4f..000000000 --- a/test/syscalls/linux/rename.cc +++ /dev/null @@ -1,394 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <fcntl.h> -#include <stdio.h> - -#include <string> - -#include "gtest/gtest.h" -#include "absl/strings/string_view.h" -#include "test/util/capability_util.h" -#include "test/util/cleanup.h" -#include "test/util/file_descriptor.h" -#include "test/util/fs_util.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -TEST(RenameTest, RootToAnything) { - ASSERT_THAT(rename("/", "/bin"), SyscallFailsWithErrno(EBUSY)); -} - -TEST(RenameTest, AnythingToRoot) { - ASSERT_THAT(rename("/bin", "/"), SyscallFailsWithErrno(EBUSY)); -} - -TEST(RenameTest, SourceIsAncestorOfTarget) { - auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - auto subdir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDirIn(dir.path())); - ASSERT_THAT(rename(dir.path().c_str(), subdir.path().c_str()), - SyscallFailsWithErrno(EINVAL)); - - // Try an even deeper directory. - auto deep_subdir = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDirIn(subdir.path())); - ASSERT_THAT(rename(dir.path().c_str(), deep_subdir.path().c_str()), - SyscallFailsWithErrno(EINVAL)); -} - -TEST(RenameTest, TargetIsAncestorOfSource) { - auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - auto subdir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDirIn(dir.path())); - ASSERT_THAT(rename(subdir.path().c_str(), dir.path().c_str()), - SyscallFailsWithErrno(ENOTEMPTY)); - - // Try an even deeper directory. - auto deep_subdir = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDirIn(subdir.path())); - ASSERT_THAT(rename(deep_subdir.path().c_str(), dir.path().c_str()), - SyscallFailsWithErrno(ENOTEMPTY)); -} - -TEST(RenameTest, FileToSelf) { - auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - EXPECT_THAT(rename(f.path().c_str(), f.path().c_str()), SyscallSucceeds()); -} - -TEST(RenameTest, DirectoryToSelf) { - auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - EXPECT_THAT(rename(f.path().c_str(), f.path().c_str()), SyscallSucceeds()); -} - -TEST(RenameTest, FileToSameDirectory) { - auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - std::string const newpath = NewTempAbsPath(); - ASSERT_THAT(rename(f.path().c_str(), newpath.c_str()), SyscallSucceeds()); - std::string const oldpath = f.release(); - f.reset(newpath); - EXPECT_THAT(Exists(oldpath), IsPosixErrorOkAndHolds(false)); - EXPECT_THAT(Exists(newpath), IsPosixErrorOkAndHolds(true)); -} - -TEST(RenameTest, DirectoryToSameDirectory) { - auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - std::string const newpath = NewTempAbsPath(); - ASSERT_THAT(rename(dir.path().c_str(), newpath.c_str()), SyscallSucceeds()); - std::string const oldpath = dir.release(); - dir.reset(newpath); - EXPECT_THAT(Exists(oldpath), IsPosixErrorOkAndHolds(false)); - EXPECT_THAT(Exists(newpath), IsPosixErrorOkAndHolds(true)); -} - -TEST(RenameTest, FileToParentDirectory) { - auto dir1 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - auto dir2 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDirIn(dir1.path())); - auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(dir2.path())); - std::string const newpath = NewTempAbsPathInDir(dir1.path()); - ASSERT_THAT(rename(f.path().c_str(), newpath.c_str()), SyscallSucceeds()); - std::string const oldpath = f.release(); - f.reset(newpath); - EXPECT_THAT(Exists(oldpath), IsPosixErrorOkAndHolds(false)); - EXPECT_THAT(Exists(newpath), IsPosixErrorOkAndHolds(true)); -} - -TEST(RenameTest, DirectoryToParentDirectory) { - auto dir1 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - auto dir2 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDirIn(dir1.path())); - auto dir3 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDirIn(dir2.path())); - EXPECT_THAT(IsDirectory(dir3.path()), IsPosixErrorOkAndHolds(true)); - std::string const newpath = NewTempAbsPathInDir(dir1.path()); - ASSERT_THAT(rename(dir3.path().c_str(), newpath.c_str()), SyscallSucceeds()); - std::string const oldpath = dir3.release(); - dir3.reset(newpath); - EXPECT_THAT(Exists(oldpath), IsPosixErrorOkAndHolds(false)); - EXPECT_THAT(Exists(newpath), IsPosixErrorOkAndHolds(true)); - EXPECT_THAT(IsDirectory(newpath), IsPosixErrorOkAndHolds(true)); -} - -TEST(RenameTest, FileToChildDirectory) { - auto dir1 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - auto dir2 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDirIn(dir1.path())); - auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(dir1.path())); - std::string const newpath = NewTempAbsPathInDir(dir2.path()); - ASSERT_THAT(rename(f.path().c_str(), newpath.c_str()), SyscallSucceeds()); - std::string const oldpath = f.release(); - f.reset(newpath); - EXPECT_THAT(Exists(oldpath), IsPosixErrorOkAndHolds(false)); - EXPECT_THAT(Exists(newpath), IsPosixErrorOkAndHolds(true)); -} - -TEST(RenameTest, DirectoryToChildDirectory) { - auto dir1 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - auto dir2 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDirIn(dir1.path())); - auto dir3 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDirIn(dir1.path())); - std::string const newpath = NewTempAbsPathInDir(dir2.path()); - ASSERT_THAT(rename(dir3.path().c_str(), newpath.c_str()), SyscallSucceeds()); - std::string const oldpath = dir3.release(); - dir3.reset(newpath); - EXPECT_THAT(Exists(oldpath), IsPosixErrorOkAndHolds(false)); - EXPECT_THAT(Exists(newpath), IsPosixErrorOkAndHolds(true)); - EXPECT_THAT(IsDirectory(newpath), IsPosixErrorOkAndHolds(true)); -} - -TEST(RenameTest, DirectoryToOwnChildDirectory) { - auto dir1 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - auto dir2 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDirIn(dir1.path())); - std::string const newpath = NewTempAbsPathInDir(dir2.path()); - ASSERT_THAT(rename(dir1.path().c_str(), newpath.c_str()), - SyscallFailsWithErrno(EINVAL)); -} - -TEST(RenameTest, FileOverwritesFile) { - auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - auto f1 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - dir.path(), "first", TempPath::kDefaultFileMode)); - auto f2 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - dir.path(), "second", TempPath::kDefaultFileMode)); - ASSERT_THAT(rename(f1.path().c_str(), f2.path().c_str()), SyscallSucceeds()); - EXPECT_THAT(Exists(f1.path()), IsPosixErrorOkAndHolds(false)); - - f1.release(); - std::string f2_contents; - ASSERT_NO_ERRNO(GetContents(f2.path(), &f2_contents)); - EXPECT_EQ("first", f2_contents); -} - -TEST(RenameTest, DirectoryOverwritesDirectoryLinkCount) { - auto parent1 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - EXPECT_THAT(Links(parent1.path()), IsPosixErrorOkAndHolds(2)); - - auto parent2 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - EXPECT_THAT(Links(parent2.path()), IsPosixErrorOkAndHolds(2)); - - auto dir1 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDirIn(parent1.path())); - auto dir2 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDirIn(parent2.path())); - - EXPECT_THAT(Links(parent1.path()), IsPosixErrorOkAndHolds(3)); - EXPECT_THAT(Links(parent2.path()), IsPosixErrorOkAndHolds(3)); - - ASSERT_THAT(rename(dir1.path().c_str(), dir2.path().c_str()), - SyscallSucceeds()); - - EXPECT_THAT(Links(parent1.path()), IsPosixErrorOkAndHolds(2)); - EXPECT_THAT(Links(parent2.path()), IsPosixErrorOkAndHolds(3)); -} - -TEST(RenameTest, FileDoesNotExist) { - auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const std::string source = JoinPath(dir.path(), "source"); - const std::string dest = JoinPath(dir.path(), "dest"); - ASSERT_THAT(rename(source.c_str(), dest.c_str()), - SyscallFailsWithErrno(ENOENT)); -} - -TEST(RenameTest, FileDoesNotOverwriteDirectory) { - auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - ASSERT_THAT(rename(f.path().c_str(), dir.path().c_str()), - SyscallFailsWithErrno(EISDIR)); -} - -TEST(RenameTest, DirectoryDoesNotOverwriteFile) { - auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - ASSERT_THAT(rename(dir.path().c_str(), f.path().c_str()), - SyscallFailsWithErrno(ENOTDIR)); -} - -TEST(RenameTest, DirectoryOverwritesEmptyDirectory) { - auto dir1 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(dir1.path())); - auto dir2 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - EXPECT_THAT(rename(dir1.path().c_str(), dir2.path().c_str()), - SyscallSucceeds()); - EXPECT_THAT(Exists(dir1.path()), IsPosixErrorOkAndHolds(false)); - dir1.release(); - EXPECT_THAT(Exists(JoinPath(dir2.path(), Basename(f.path()))), - IsPosixErrorOkAndHolds(true)); - f.release(); -} - -TEST(RenameTest, FailsWithDots) { - auto dir1 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - auto dir2 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - auto dir1_dot = absl::StrCat(dir1.path(), "/."); - auto dir2_dot = absl::StrCat(dir2.path(), "/."); - auto dir1_dot_dot = absl::StrCat(dir1.path(), "/.."); - auto dir2_dot_dot = absl::StrCat(dir2.path(), "/.."); - - // Try with dot paths in the first argument - EXPECT_THAT(rename(dir1_dot.c_str(), dir2.path().c_str()), - SyscallFailsWithErrno(EBUSY)); - EXPECT_THAT(rename(dir1_dot_dot.c_str(), dir2.path().c_str()), - SyscallFailsWithErrno(EBUSY)); - - // Try with dot paths in the second argument - EXPECT_THAT(rename(dir1.path().c_str(), dir2_dot.c_str()), - SyscallFailsWithErrno(EBUSY)); - EXPECT_THAT(rename(dir1.path().c_str(), dir2_dot_dot.c_str()), - SyscallFailsWithErrno(EBUSY)); -} - -TEST(RenameTest, DirectoryDoesNotOverwriteNonemptyDirectory) { - auto dir1 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - auto f1 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(dir1.path())); - auto dir2 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - auto f2 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(dir2.path())); - ASSERT_THAT(rename(dir1.path().c_str(), dir2.path().c_str()), - SyscallFailsWithErrno(ENOTEMPTY)); -} - -TEST(RenameTest, FailsWhenOldParentNotWritable) { - // Drop capabilities that allow us to override file and directory permissions. - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_READ_SEARCH, false)); - - auto dir1 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - auto f1 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(dir1.path())); - auto dir2 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - // dir1 is not writable. - ASSERT_THAT(chmod(dir1.path().c_str(), 0555), SyscallSucceeds()); - - std::string const newpath = NewTempAbsPathInDir(dir2.path()); - EXPECT_THAT(rename(f1.path().c_str(), newpath.c_str()), - SyscallFailsWithErrno(EACCES)); -} - -TEST(RenameTest, FailsWhenNewParentNotWritable) { - // Drop capabilities that allow us to override file and directory permissions. - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_READ_SEARCH, false)); - - auto dir1 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - auto f1 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(dir1.path())); - // dir2 is not writable. - auto dir2 = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateDirWith(GetAbsoluteTestTmpdir(), 0555)); - - std::string const newpath = NewTempAbsPathInDir(dir2.path()); - EXPECT_THAT(rename(f1.path().c_str(), newpath.c_str()), - SyscallFailsWithErrno(EACCES)); -} - -// Equivalent to FailsWhenNewParentNotWritable, but with a destination file -// to overwrite. -TEST(RenameTest, OverwriteFailsWhenNewParentNotWritable) { - // Drop capabilities that allow us to override file and directory permissions. - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_READ_SEARCH, false)); - - auto dir1 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - auto f1 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(dir1.path())); - - // dir2 is not writable. - auto dir2 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - auto f2 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(dir2.path())); - ASSERT_THAT(chmod(dir2.path().c_str(), 0555), SyscallSucceeds()); - - EXPECT_THAT(rename(f1.path().c_str(), f2.path().c_str()), - SyscallFailsWithErrno(EACCES)); -} - -// If the parent directory of source is not accessible, rename returns EACCES -// because the user cannot determine if source exists. -TEST(RenameTest, FileDoesNotExistWhenNewParentNotExecutable) { - // Drop capabilities that allow us to override file and directory permissions. - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_READ_SEARCH, false)); - - // No execute permission. - auto dir = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateDirWith(GetAbsoluteTestTmpdir(), 0400)); - - const std::string source = JoinPath(dir.path(), "source"); - const std::string dest = JoinPath(dir.path(), "dest"); - ASSERT_THAT(rename(source.c_str(), dest.c_str()), - SyscallFailsWithErrno(EACCES)); -} - -TEST(RenameTest, DirectoryWithOpenFdOverwritesEmptyDirectory) { - auto dir1 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(dir1.path())); - auto dir2 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - - // Get an fd on dir1 - int fd; - ASSERT_THAT(fd = open(dir1.path().c_str(), O_DIRECTORY), SyscallSucceeds()); - auto close_f = Cleanup([fd] { - // Close the fd on f. - EXPECT_THAT(close(fd), SyscallSucceeds()); - }); - - EXPECT_THAT(rename(dir1.path().c_str(), dir2.path().c_str()), - SyscallSucceeds()); - - const std::string new_f_path = JoinPath(dir2.path(), Basename(f.path())); - - auto remove_f = Cleanup([&] { - // Delete f in its new location. - ASSERT_NO_ERRNO(Delete(new_f_path)); - f.release(); - }); - - EXPECT_THAT(Exists(dir1.path()), IsPosixErrorOkAndHolds(false)); - dir1.release(); - EXPECT_THAT(Exists(new_f_path), IsPosixErrorOkAndHolds(true)); -} - -TEST(RenameTest, FileWithOpenFd) { - TempPath root_dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - TempPath dir1 = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDirIn(root_dir.path())); - TempPath dir2 = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDirIn(root_dir.path())); - TempPath dir3 = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDirIn(root_dir.path())); - - // Create file in dir1. - constexpr char kContents[] = "foo"; - auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - dir1.path(), kContents, TempPath::kDefaultFileMode)); - - // Get fd on file. - const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(f.path(), O_RDWR)); - - // Move f to dir2. - const std::string path2 = NewTempAbsPathInDir(dir2.path()); - ASSERT_THAT(rename(f.path().c_str(), path2.c_str()), SyscallSucceeds()); - - // Read f's kContents. - char buf[sizeof(kContents)]; - EXPECT_THAT(PreadFd(fd.get(), &buf, sizeof(kContents), 0), - SyscallSucceedsWithValue(sizeof(kContents) - 1)); - EXPECT_EQ(absl::string_view(buf, sizeof(buf) - 1), kContents); - - // Move f to dir3. - const std::string path3 = NewTempAbsPathInDir(dir3.path()); - ASSERT_THAT(rename(path2.c_str(), path3.c_str()), SyscallSucceeds()); - - // Read f's kContents. - EXPECT_THAT(PreadFd(fd.get(), &buf, sizeof(kContents), 0), - SyscallSucceedsWithValue(sizeof(kContents) - 1)); - EXPECT_EQ(absl::string_view(buf, sizeof(buf) - 1), kContents); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/rlimits.cc b/test/syscalls/linux/rlimits.cc deleted file mode 100644 index 860f0f688..000000000 --- a/test/syscalls/linux/rlimits.cc +++ /dev/null @@ -1,75 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <sys/resource.h> -#include <sys/time.h> - -#include "test/util/capability_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -TEST(RlimitTest, SetRlimitHigher) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_RESOURCE))); - - struct rlimit rl = {}; - EXPECT_THAT(getrlimit(RLIMIT_NOFILE, &rl), SyscallSucceeds()); - - // Lower the rlimit first, as it may be equal to /proc/sys/fs/nr_open, in - // which case even users with CAP_SYS_RESOURCE can't raise it. - rl.rlim_cur--; - rl.rlim_max--; - ASSERT_THAT(setrlimit(RLIMIT_NOFILE, &rl), SyscallSucceeds()); - - rl.rlim_max++; - EXPECT_THAT(setrlimit(RLIMIT_NOFILE, &rl), SyscallSucceeds()); -} - -TEST(RlimitTest, UnprivilegedSetRlimit) { - // Drop privileges if necessary. - if (ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_RESOURCE))) { - EXPECT_NO_ERRNO(SetCapability(CAP_SYS_RESOURCE, false)); - } - - struct rlimit rl = {}; - rl.rlim_cur = 1000; - rl.rlim_max = 20000; - EXPECT_THAT(setrlimit(RLIMIT_NOFILE, &rl), SyscallSucceeds()); - - struct rlimit rl2 = {}; - EXPECT_THAT(getrlimit(RLIMIT_NOFILE, &rl2), SyscallSucceeds()); - EXPECT_EQ(rl.rlim_cur, rl2.rlim_cur); - EXPECT_EQ(rl.rlim_max, rl2.rlim_max); - - rl.rlim_max = 100000; - EXPECT_THAT(setrlimit(RLIMIT_NOFILE, &rl), SyscallFailsWithErrno(EPERM)); -} - -TEST(RlimitTest, SetSoftRlimitAboveHard) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_RESOURCE))); - - struct rlimit rl = {}; - EXPECT_THAT(getrlimit(RLIMIT_NOFILE, &rl), SyscallSucceeds()); - - rl.rlim_cur = rl.rlim_max + 1; - EXPECT_THAT(setrlimit(RLIMIT_NOFILE, &rl), SyscallFailsWithErrno(EINVAL)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/rseq.cc b/test/syscalls/linux/rseq.cc deleted file mode 100644 index 4bfb1ff56..000000000 --- a/test/syscalls/linux/rseq.cc +++ /dev/null @@ -1,198 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <signal.h> -#include <sys/syscall.h> -#include <sys/types.h> -#include <sys/wait.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "test/syscalls/linux/rseq/test.h" -#include "test/syscalls/linux/rseq/uapi.h" -#include "test/util/logging.h" -#include "test/util/multiprocess_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -// Syscall test for rseq (restartable sequences). -// -// We must be very careful about how these tests are written. Each thread may -// only have one struct rseq registration, which may be done automatically at -// thread start (as of 2019-11-13, glibc does *not* support rseq and thus does -// not do so, but other libraries do). -// -// Testing of rseq is thus done primarily in a child process with no -// registration. This means exec'ing a nostdlib binary, as rseq registration can -// only be cleared by execve (or knowing the old rseq address), and glibc (based -// on the current unmerged patches) register rseq before calling main()). - -int RSeq(struct rseq* rseq, uint32_t rseq_len, int flags, uint32_t sig) { - return syscall(kRseqSyscall, rseq, rseq_len, flags, sig); -} - -// Returns true if this kernel supports the rseq syscall. -PosixErrorOr<bool> RSeqSupported() { - // We have to be careful here, there are three possible cases: - // - // 1. rseq is not supported -> ENOSYS - // 2. rseq is supported and not registered -> success, but we should - // unregister. - // 3. rseq is supported and registered -> EINVAL (most likely). - - // The only validation done on new registrations is that rseq is aligned and - // writable. - rseq rseq = {}; - int ret = RSeq(&rseq, sizeof(rseq), 0, 0); - if (ret == 0) { - // Successfully registered, rseq is supported. Unregister. - ret = RSeq(&rseq, sizeof(rseq), kRseqFlagUnregister, 0); - if (ret != 0) { - return PosixError(errno); - } - return true; - } - - switch (errno) { - case ENOSYS: - // Not supported. - return false; - case EINVAL: - // Supported, but already registered. EINVAL returned because we provided - // a different address. - return true; - default: - // Unknown error. - return PosixError(errno); - } -} - -constexpr char kRseqBinary[] = "test/syscalls/linux/rseq/rseq"; - -void RunChildTest(std::string test_case, int want_status) { - std::string path = RunfilePath(kRseqBinary); - - pid_t child_pid = -1; - int execve_errno = 0; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(path, {path, test_case}, {}, &child_pid, &execve_errno)); - - ASSERT_GT(child_pid, 0); - ASSERT_EQ(execve_errno, 0); - - int status = 0; - ASSERT_THAT(RetryEINTR(waitpid)(child_pid, &status, 0), SyscallSucceeds()); - ASSERT_EQ(status, want_status); -} - -// Test that rseq must be aligned. -TEST(RseqTest, Unaligned) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(RSeqSupported())); - - RunChildTest(kRseqTestUnaligned, 0); -} - -// Sanity test that registration works. -TEST(RseqTest, Register) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(RSeqSupported())); - - RunChildTest(kRseqTestRegister, 0); -} - -// Registration can't be done twice. -TEST(RseqTest, DoubleRegister) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(RSeqSupported())); - - RunChildTest(kRseqTestDoubleRegister, 0); -} - -// Registration can be done again after unregister. -TEST(RseqTest, RegisterUnregister) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(RSeqSupported())); - - RunChildTest(kRseqTestRegisterUnregister, 0); -} - -// The pointer to rseq must match on register/unregister. -TEST(RseqTest, UnregisterDifferentPtr) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(RSeqSupported())); - - RunChildTest(kRseqTestUnregisterDifferentPtr, 0); -} - -// The signature must match on register/unregister. -TEST(RseqTest, UnregisterDifferentSignature) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(RSeqSupported())); - - RunChildTest(kRseqTestUnregisterDifferentSignature, 0); -} - -// The CPU ID is initialized. -TEST(RseqTest, CPU) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(RSeqSupported())); - - RunChildTest(kRseqTestCPU, 0); -} - -// Critical section is eventually aborted. -TEST(RseqTest, Abort) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(RSeqSupported())); - - RunChildTest(kRseqTestAbort, 0); -} - -// Abort may be before the critical section. -TEST(RseqTest, AbortBefore) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(RSeqSupported())); - - RunChildTest(kRseqTestAbortBefore, 0); -} - -// Signature must match. -TEST(RseqTest, AbortSignature) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(RSeqSupported())); - - RunChildTest(kRseqTestAbortSignature, SIGSEGV); -} - -// Abort must not be in the critical section. -TEST(RseqTest, AbortPreCommit) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(RSeqSupported())); - - RunChildTest(kRseqTestAbortPreCommit, SIGSEGV); -} - -// rseq.rseq_cs is cleared on abort. -TEST(RseqTest, AbortClearsCS) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(RSeqSupported())); - - RunChildTest(kRseqTestAbortClearsCS, 0); -} - -// rseq.rseq_cs is cleared on abort outside of critical section. -TEST(RseqTest, InvalidAbortClearsCS) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(RSeqSupported())); - - RunChildTest(kRseqTestInvalidAbortClearsCS, 0); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/rseq/BUILD b/test/syscalls/linux/rseq/BUILD deleted file mode 100644 index ed488dbc2..000000000 --- a/test/syscalls/linux/rseq/BUILD +++ /dev/null @@ -1,58 +0,0 @@ -# This package contains a standalone rseq test binary. This binary must not -# depend on libc, which might use rseq itself. - -load("//tools:defs.bzl", "cc_flags_supplier", "cc_library", "cc_toolchain") - -package(licenses = ["notice"]) - -genrule( - name = "rseq_binary", - srcs = [ - "critical.h", - "critical.S", - "rseq.cc", - "syscalls.h", - "start.S", - "test.h", - "types.h", - "uapi.h", - ], - outs = ["rseq"], - cmd = " ".join([ - "$(CC)", - "$(CC_FLAGS) ", - "-I.", - "-Wall", - "-Werror", - "-O2", - "-std=c++17", - "-static", - "-nostdlib", - "-ffreestanding", - "-o", - "$(location rseq)", - "$(location critical.S)", - "$(location rseq.cc)", - "$(location start.S)", - ]), - toolchains = [ - cc_toolchain, - ":no_pie_cc_flags", - ], - visibility = ["//:sandbox"], -) - -cc_flags_supplier( - name = "no_pie_cc_flags", - features = ["-pie"], -) - -cc_library( - name = "lib", - testonly = 1, - hdrs = [ - "test.h", - "uapi.h", - ], - visibility = ["//:sandbox"], -) diff --git a/test/syscalls/linux/rseq/critical.S b/test/syscalls/linux/rseq/critical.S deleted file mode 100644 index 8c0687e6d..000000000 --- a/test/syscalls/linux/rseq/critical.S +++ /dev/null @@ -1,66 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// Restartable sequences critical sections. - -// Loops continuously until aborted. -// -// void rseq_loop(struct rseq* r, struct rseq_cs* cs) - - .text - .globl rseq_loop - .type rseq_loop, @function - -rseq_loop: - jmp begin - - // Abort block before the critical section. - // Abort signature is 4 nops for simplicity. - .byte 0x90, 0x90, 0x90, 0x90 - .globl rseq_loop_early_abort -rseq_loop_early_abort: - ret - -begin: - // r->rseq_cs = cs - movq %rsi, 8(%rdi) - - // N.B. rseq_cs will be cleared by any preempt, even outside the critical - // section. Thus it must be set in or immediately before the critical section - // to ensure it is not cleared before the section begins. - .globl rseq_loop_start -rseq_loop_start: - jmp rseq_loop_start - - // "Pre-commit": extra instructions inside the critical section. These are - // used as the abort point in TestAbortPreCommit, which is not valid. - .globl rseq_loop_pre_commit -rseq_loop_pre_commit: - // Extra abort signature + nop for TestAbortPostCommit. - .byte 0x90, 0x90, 0x90, 0x90 - nop - - // "Post-commit": never reached in this case. - .globl rseq_loop_post_commit -rseq_loop_post_commit: - - // Abort signature is 4 nops for simplicity. - .byte 0x90, 0x90, 0x90, 0x90 - - .globl rseq_loop_abort -rseq_loop_abort: - ret - - .size rseq_loop,.-rseq_loop - .section .note.GNU-stack,"",@progbits diff --git a/test/syscalls/linux/rseq/critical.h b/test/syscalls/linux/rseq/critical.h deleted file mode 100644 index ac987a25e..000000000 --- a/test/syscalls/linux/rseq/critical.h +++ /dev/null @@ -1,39 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_SYSCALLS_LINUX_RSEQ_CRITICAL_H_ -#define GVISOR_TEST_SYSCALLS_LINUX_RSEQ_CRITICAL_H_ - -#include "test/syscalls/linux/rseq/types.h" -#include "test/syscalls/linux/rseq/uapi.h" - -constexpr uint32_t kRseqSignature = 0x90909090; - -extern "C" { - -extern void rseq_loop(struct rseq* r, struct rseq_cs* cs); -extern void* rseq_loop_early_abort; -extern void* rseq_loop_start; -extern void* rseq_loop_pre_commit; -extern void* rseq_loop_post_commit; -extern void* rseq_loop_abort; - -extern int rseq_getpid(struct rseq* r, struct rseq_cs* cs); -extern void* rseq_getpid_start; -extern void* rseq_getpid_post_commit; -extern void* rseq_getpid_abort; - -} // extern "C" - -#endif // GVISOR_TEST_SYSCALLS_LINUX_RSEQ_CRITICAL_H_ diff --git a/test/syscalls/linux/rseq/rseq.cc b/test/syscalls/linux/rseq/rseq.cc deleted file mode 100644 index f036db26d..000000000 --- a/test/syscalls/linux/rseq/rseq.cc +++ /dev/null @@ -1,366 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/syscalls/linux/rseq/critical.h" -#include "test/syscalls/linux/rseq/syscalls.h" -#include "test/syscalls/linux/rseq/test.h" -#include "test/syscalls/linux/rseq/types.h" -#include "test/syscalls/linux/rseq/uapi.h" - -namespace gvisor { -namespace testing { - -extern "C" int main(int argc, char** argv, char** envp); - -// Standalone initialization before calling main(). -extern "C" void __init(uintptr_t* sp) { - int argc = sp[0]; - char** argv = reinterpret_cast<char**>(&sp[1]); - char** envp = &argv[argc + 1]; - - // Call main() and exit. - sys_exit_group(main(argc, argv, envp)); - - // sys_exit_group does not return -} - -int strcmp(const char* s1, const char* s2) { - const unsigned char* p1 = reinterpret_cast<const unsigned char*>(s1); - const unsigned char* p2 = reinterpret_cast<const unsigned char*>(s2); - - while (*p1 == *p2) { - if (!*p1) { - return 0; - } - ++p1; - ++p2; - } - return static_cast<int>(*p1) - static_cast<int>(*p2); -} - -int sys_rseq(struct rseq* rseq, uint32_t rseq_len, int flags, uint32_t sig) { - return raw_syscall(kRseqSyscall, rseq, rseq_len, flags, sig); -} - -// Test that rseq must be aligned. -int TestUnaligned() { - constexpr uintptr_t kRequiredAlignment = alignof(rseq); - - char buf[2 * kRequiredAlignment] = {}; - uintptr_t ptr = reinterpret_cast<uintptr_t>(&buf[0]); - if ((ptr & (kRequiredAlignment - 1)) == 0) { - // buf is already aligned. Misalign it. - ptr++; - } - - int ret = sys_rseq(reinterpret_cast<rseq*>(ptr), sizeof(rseq), 0, 0); - if (sys_errno(ret) != EINVAL) { - return 1; - } - return 0; -} - -// Sanity test that registration works. -int TestRegister() { - struct rseq r = {}; - if (int ret = sys_rseq(&r, sizeof(r), 0, 0); sys_errno(ret) != 0) { - return 1; - } - return 0; -}; - -// Registration can't be done twice. -int TestDoubleRegister() { - struct rseq r = {}; - if (int ret = sys_rseq(&r, sizeof(r), 0, 0); sys_errno(ret) != 0) { - return 1; - } - - if (int ret = sys_rseq(&r, sizeof(r), 0, 0); sys_errno(ret) != EBUSY) { - return 1; - } - - return 0; -}; - -// Registration can be done again after unregister. -int TestRegisterUnregister() { - struct rseq r = {}; - if (int ret = sys_rseq(&r, sizeof(r), 0, 0); sys_errno(ret) != 0) { - return 1; - } - - if (int ret = sys_rseq(&r, sizeof(r), kRseqFlagUnregister, 0); - sys_errno(ret) != 0) { - return 1; - } - - if (int ret = sys_rseq(&r, sizeof(r), 0, 0); sys_errno(ret) != 0) { - return 1; - } - - return 0; -}; - -// The pointer to rseq must match on register/unregister. -int TestUnregisterDifferentPtr() { - struct rseq r = {}; - if (int ret = sys_rseq(&r, sizeof(r), 0, 0); sys_errno(ret) != 0) { - return 1; - } - - struct rseq r2 = {}; - if (int ret = sys_rseq(&r2, sizeof(r2), kRseqFlagUnregister, 0); - sys_errno(ret) != EINVAL) { - return 1; - } - - return 0; -}; - -// The signature must match on register/unregister. -int TestUnregisterDifferentSignature() { - constexpr int kSignature = 0; - - struct rseq r = {}; - if (int ret = sys_rseq(&r, sizeof(r), 0, kSignature); sys_errno(ret) != 0) { - return 1; - } - - if (int ret = sys_rseq(&r, sizeof(r), kRseqFlagUnregister, kSignature + 1); - sys_errno(ret) != EPERM) { - return 1; - } - - return 0; -}; - -// The CPU ID is initialized. -int TestCPU() { - struct rseq r = {}; - r.cpu_id = kRseqCPUIDUninitialized; - - if (int ret = sys_rseq(&r, sizeof(r), 0, 0); sys_errno(ret) != 0) { - return 1; - } - - if (__atomic_load_n(&r.cpu_id, __ATOMIC_RELAXED) < 0) { - return 1; - } - if (__atomic_load_n(&r.cpu_id_start, __ATOMIC_RELAXED) < 0) { - return 1; - } - - return 0; -}; - -// Critical section is eventually aborted. -int TestAbort() { - struct rseq r = {}; - if (int ret = sys_rseq(&r, sizeof(r), 0, kRseqSignature); - sys_errno(ret) != 0) { - return 1; - } - - struct rseq_cs cs = {}; - cs.version = 0; - cs.flags = 0; - cs.start_ip = reinterpret_cast<uint64_t>(&rseq_loop_start); - cs.post_commit_offset = reinterpret_cast<uint64_t>(&rseq_loop_post_commit) - - reinterpret_cast<uint64_t>(&rseq_loop_start); - cs.abort_ip = reinterpret_cast<uint64_t>(&rseq_loop_abort); - - // Loops until abort. If this returns then abort occurred. - rseq_loop(&r, &cs); - - return 0; -}; - -// Abort may be before the critical section. -int TestAbortBefore() { - struct rseq r = {}; - if (int ret = sys_rseq(&r, sizeof(r), 0, kRseqSignature); - sys_errno(ret) != 0) { - return 1; - } - - struct rseq_cs cs = {}; - cs.version = 0; - cs.flags = 0; - cs.start_ip = reinterpret_cast<uint64_t>(&rseq_loop_start); - cs.post_commit_offset = reinterpret_cast<uint64_t>(&rseq_loop_post_commit) - - reinterpret_cast<uint64_t>(&rseq_loop_start); - cs.abort_ip = reinterpret_cast<uint64_t>(&rseq_loop_early_abort); - - // Loops until abort. If this returns then abort occurred. - rseq_loop(&r, &cs); - - return 0; -}; - -// Signature must match. -int TestAbortSignature() { - struct rseq r = {}; - if (int ret = sys_rseq(&r, sizeof(r), 0, kRseqSignature + 1); - sys_errno(ret) != 0) { - return 1; - } - - struct rseq_cs cs = {}; - cs.version = 0; - cs.flags = 0; - cs.start_ip = reinterpret_cast<uint64_t>(&rseq_loop_start); - cs.post_commit_offset = reinterpret_cast<uint64_t>(&rseq_loop_post_commit) - - reinterpret_cast<uint64_t>(&rseq_loop_start); - cs.abort_ip = reinterpret_cast<uint64_t>(&rseq_loop_abort); - - // Loops until abort. This should SIGSEGV on abort. - rseq_loop(&r, &cs); - - return 1; -}; - -// Abort must not be in the critical section. -int TestAbortPreCommit() { - struct rseq r = {}; - if (int ret = sys_rseq(&r, sizeof(r), 0, kRseqSignature + 1); - sys_errno(ret) != 0) { - return 1; - } - - struct rseq_cs cs = {}; - cs.version = 0; - cs.flags = 0; - cs.start_ip = reinterpret_cast<uint64_t>(&rseq_loop_start); - cs.post_commit_offset = reinterpret_cast<uint64_t>(&rseq_loop_post_commit) - - reinterpret_cast<uint64_t>(&rseq_loop_start); - cs.abort_ip = reinterpret_cast<uint64_t>(&rseq_loop_pre_commit); - - // Loops until abort. This should SIGSEGV on abort. - rseq_loop(&r, &cs); - - return 1; -}; - -// rseq.rseq_cs is cleared on abort. -int TestAbortClearsCS() { - struct rseq r = {}; - if (int ret = sys_rseq(&r, sizeof(r), 0, kRseqSignature); - sys_errno(ret) != 0) { - return 1; - } - - struct rseq_cs cs = {}; - cs.version = 0; - cs.flags = 0; - cs.start_ip = reinterpret_cast<uint64_t>(&rseq_loop_start); - cs.post_commit_offset = reinterpret_cast<uint64_t>(&rseq_loop_post_commit) - - reinterpret_cast<uint64_t>(&rseq_loop_start); - cs.abort_ip = reinterpret_cast<uint64_t>(&rseq_loop_abort); - - // Loops until abort. If this returns then abort occurred. - rseq_loop(&r, &cs); - - if (__atomic_load_n(&r.rseq_cs, __ATOMIC_RELAXED)) { - return 1; - } - - return 0; -}; - -// rseq.rseq_cs is cleared on abort outside of critical section. -int TestInvalidAbortClearsCS() { - struct rseq r = {}; - if (int ret = sys_rseq(&r, sizeof(r), 0, kRseqSignature); - sys_errno(ret) != 0) { - return 1; - } - - struct rseq_cs cs = {}; - cs.version = 0; - cs.flags = 0; - cs.start_ip = reinterpret_cast<uint64_t>(&rseq_loop_start); - cs.post_commit_offset = reinterpret_cast<uint64_t>(&rseq_loop_post_commit) - - reinterpret_cast<uint64_t>(&rseq_loop_start); - cs.abort_ip = reinterpret_cast<uint64_t>(&rseq_loop_abort); - - __atomic_store_n(&r.rseq_cs, &cs, __ATOMIC_RELAXED); - - // When the next abort condition occurs, the kernel will clear cs once it - // determines we aren't in the critical section. - while (1) { - if (!__atomic_load_n(&r.rseq_cs, __ATOMIC_RELAXED)) { - break; - } - } - - return 0; -}; - -// Exit codes: -// 0 - Pass -// 1 - Fail -// 2 - Missing argument -// 3 - Unknown test case -extern "C" int main(int argc, char** argv, char** envp) { - if (argc != 2) { - // Usage: rseq <test case> - return 2; - } - - if (strcmp(argv[1], kRseqTestUnaligned) == 0) { - return TestUnaligned(); - } - if (strcmp(argv[1], kRseqTestRegister) == 0) { - return TestRegister(); - } - if (strcmp(argv[1], kRseqTestDoubleRegister) == 0) { - return TestDoubleRegister(); - } - if (strcmp(argv[1], kRseqTestRegisterUnregister) == 0) { - return TestRegisterUnregister(); - } - if (strcmp(argv[1], kRseqTestUnregisterDifferentPtr) == 0) { - return TestUnregisterDifferentPtr(); - } - if (strcmp(argv[1], kRseqTestUnregisterDifferentSignature) == 0) { - return TestUnregisterDifferentSignature(); - } - if (strcmp(argv[1], kRseqTestCPU) == 0) { - return TestCPU(); - } - if (strcmp(argv[1], kRseqTestAbort) == 0) { - return TestAbort(); - } - if (strcmp(argv[1], kRseqTestAbortBefore) == 0) { - return TestAbortBefore(); - } - if (strcmp(argv[1], kRseqTestAbortSignature) == 0) { - return TestAbortSignature(); - } - if (strcmp(argv[1], kRseqTestAbortPreCommit) == 0) { - return TestAbortPreCommit(); - } - if (strcmp(argv[1], kRseqTestAbortClearsCS) == 0) { - return TestAbortClearsCS(); - } - if (strcmp(argv[1], kRseqTestInvalidAbortClearsCS) == 0) { - return TestInvalidAbortClearsCS(); - } - - return 3; -} - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/rseq/start.S b/test/syscalls/linux/rseq/start.S deleted file mode 100644 index b9611b276..000000000 --- a/test/syscalls/linux/rseq/start.S +++ /dev/null @@ -1,45 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - - - .text - .align 4 - .type _start,@function - .globl _start - -_start: - movq %rsp,%rdi - call __init - hlt - - .size _start,.-_start - .section .note.GNU-stack,"",@progbits - - .text - .globl raw_syscall - .type raw_syscall, @function - -raw_syscall: - mov %rdi,%rax // syscall # - mov %rsi,%rdi // arg0 - mov %rdx,%rsi // arg1 - mov %rcx,%rdx // arg2 - mov %r8,%r10 // arg3 (goes in r10 instead of rcx for system calls) - mov %r9,%r8 // arg4 - mov 0x8(%rsp),%r9 // arg5 - syscall - ret - - .size raw_syscall,.-raw_syscall - .section .note.GNU-stack,"",@progbits diff --git a/test/syscalls/linux/rseq/syscalls.h b/test/syscalls/linux/rseq/syscalls.h deleted file mode 100644 index e5299c188..000000000 --- a/test/syscalls/linux/rseq/syscalls.h +++ /dev/null @@ -1,66 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_SYSCALLS_LINUX_RSEQ_SYSCALLS_H_ -#define GVISOR_TEST_SYSCALLS_LINUX_RSEQ_SYSCALLS_H_ - -#include "test/syscalls/linux/rseq/types.h" - -#ifdef __x86_64__ -// Syscall numbers. -constexpr int kGetpid = 39; -constexpr int kExitGroup = 231; -#else -#error "Unknown architecture" -#endif - -namespace gvisor { -namespace testing { - -// Standalone system call interfaces. -// Note that these are all "raw" system call interfaces which encode -// errors by setting the return value to a small negative number. -// Use sys_errno() to check system call return values for errors. - -// Maximum Linux error number. -constexpr int kMaxErrno = 4095; - -// Errno values. -#define EPERM 1 -#define EFAULT 14 -#define EBUSY 16 -#define EINVAL 22 - -// Get the error number from a raw system call return value. -// Returns a positive error number or 0 if there was no error. -static inline int sys_errno(uintptr_t rval) { - if (rval >= static_cast<uintptr_t>(-kMaxErrno)) { - return -static_cast<int>(rval); - } - return 0; -} - -extern "C" uintptr_t raw_syscall(int number, ...); - -static inline void sys_exit_group(int status) { - raw_syscall(kExitGroup, status); -} -static inline int sys_getpid() { - return static_cast<int>(raw_syscall(kGetpid)); -} - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_SYSCALLS_LINUX_RSEQ_SYSCALLS_H_ diff --git a/test/syscalls/linux/rseq/test.h b/test/syscalls/linux/rseq/test.h deleted file mode 100644 index 3b7bb74b1..000000000 --- a/test/syscalls/linux/rseq/test.h +++ /dev/null @@ -1,43 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_SYSCALLS_LINUX_RSEQ_TEST_H_ -#define GVISOR_TEST_SYSCALLS_LINUX_RSEQ_TEST_H_ - -namespace gvisor { -namespace testing { - -// Test cases supported by rseq binary. - -inline constexpr char kRseqTestUnaligned[] = "unaligned"; -inline constexpr char kRseqTestRegister[] = "register"; -inline constexpr char kRseqTestDoubleRegister[] = "double-register"; -inline constexpr char kRseqTestRegisterUnregister[] = "register-unregister"; -inline constexpr char kRseqTestUnregisterDifferentPtr[] = - "unregister-different-ptr"; -inline constexpr char kRseqTestUnregisterDifferentSignature[] = - "unregister-different-signature"; -inline constexpr char kRseqTestCPU[] = "cpu"; -inline constexpr char kRseqTestAbort[] = "abort"; -inline constexpr char kRseqTestAbortBefore[] = "abort-before"; -inline constexpr char kRseqTestAbortSignature[] = "abort-signature"; -inline constexpr char kRseqTestAbortPreCommit[] = "abort-precommit"; -inline constexpr char kRseqTestAbortClearsCS[] = "abort-clears-cs"; -inline constexpr char kRseqTestInvalidAbortClearsCS[] = - "invalid-abort-clears-cs"; - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_SYSCALLS_LINUX_RSEQ_TEST_H_ diff --git a/test/syscalls/linux/rseq/types.h b/test/syscalls/linux/rseq/types.h deleted file mode 100644 index b6afe9817..000000000 --- a/test/syscalls/linux/rseq/types.h +++ /dev/null @@ -1,31 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_SYSCALLS_LINUX_RSEQ_TYPES_H_ -#define GVISOR_TEST_SYSCALLS_LINUX_RSEQ_TYPES_H_ - -using size_t = __SIZE_TYPE__; -using uintptr_t = __UINTPTR_TYPE__; - -using uint8_t = __UINT8_TYPE__; -using uint16_t = __UINT16_TYPE__; -using uint32_t = __UINT32_TYPE__; -using uint64_t = __UINT64_TYPE__; - -using int8_t = __INT8_TYPE__; -using int16_t = __INT16_TYPE__; -using int32_t = __INT32_TYPE__; -using int64_t = __INT64_TYPE__; - -#endif // GVISOR_TEST_SYSCALLS_LINUX_RSEQ_TYPES_H_ diff --git a/test/syscalls/linux/rseq/uapi.h b/test/syscalls/linux/rseq/uapi.h deleted file mode 100644 index e3ff0579a..000000000 --- a/test/syscalls/linux/rseq/uapi.h +++ /dev/null @@ -1,54 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_SYSCALLS_LINUX_RSEQ_UAPI_H_ -#define GVISOR_TEST_SYSCALLS_LINUX_RSEQ_UAPI_H_ - -// User-kernel ABI for restartable sequences. - -// Standard types. -// -// N.B. This header will be included in targets that do have the standard -// library, so we can't shadow the standard type names. -using __u32 = __UINT32_TYPE__; -using __u64 = __UINT64_TYPE__; - -#ifdef __x86_64__ -// Syscall numbers. -constexpr int kRseqSyscall = 334; -#else -#error "Unknown architecture" -#endif // __x86_64__ - -struct rseq_cs { - __u32 version; - __u32 flags; - __u64 start_ip; - __u64 post_commit_offset; - __u64 abort_ip; -} __attribute__((aligned(4 * sizeof(__u64)))); - -// N.B. alignment is enforced by the kernel. -struct rseq { - __u32 cpu_id_start; - __u32 cpu_id; - struct rseq_cs* rseq_cs; - __u32 flags; -} __attribute__((aligned(4 * sizeof(__u64)))); - -constexpr int kRseqFlagUnregister = 1 << 0; - -constexpr int kRseqCPUIDUninitialized = -1; - -#endif // GVISOR_TEST_SYSCALLS_LINUX_RSEQ_UAPI_H_ diff --git a/test/syscalls/linux/rtsignal.cc b/test/syscalls/linux/rtsignal.cc deleted file mode 100644 index 81d193ffd..000000000 --- a/test/syscalls/linux/rtsignal.cc +++ /dev/null @@ -1,172 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <sys/syscall.h> -#include <sys/types.h> -#include <unistd.h> - -#include <cerrno> -#include <csignal> - -#include "gtest/gtest.h" -#include "test/util/cleanup.h" -#include "test/util/logging.h" -#include "test/util/posix_error.h" -#include "test/util/signal_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -// saved_info is set by the handler. -siginfo_t saved_info; - -// has_saved_info is set to true by the handler. -volatile bool has_saved_info; - -void SigHandler(int sig, siginfo_t* info, void* context) { - // Copy to the given info. - saved_info = *info; - has_saved_info = true; -} - -void ClearSavedInfo() { - // Clear the cached info. - memset(&saved_info, 0, sizeof(saved_info)); - has_saved_info = false; -} - -PosixErrorOr<Cleanup> SetupSignalHandler(int sig) { - struct sigaction sa; - sa.sa_sigaction = SigHandler; - sigfillset(&sa.sa_mask); - sa.sa_flags = SA_SIGINFO; - return ScopedSigaction(sig, sa); -} - -class RtSignalTest : public ::testing::Test { - protected: - void SetUp() override { - action_cleanup_ = ASSERT_NO_ERRNO_AND_VALUE(SetupSignalHandler(SIGUSR1)); - mask_cleanup_ = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_UNBLOCK, SIGUSR1)); - } - - void TearDown() override { ClearSavedInfo(); } - - private: - Cleanup action_cleanup_; - Cleanup mask_cleanup_; -}; - -static int rt_sigqueueinfo(pid_t tgid, int sig, siginfo_t* uinfo) { - int ret; - do { - // NOTE(b/25434735): rt_sigqueueinfo(2) could return EAGAIN for RT signals. - ret = syscall(SYS_rt_sigqueueinfo, tgid, sig, uinfo); - } while (ret == -1 && errno == EAGAIN); - return ret; -} - -TEST_F(RtSignalTest, InvalidTID) { - siginfo_t uinfo; - // Depending on the kernel version, these calls may fail with - // ESRCH (goobunutu machines) or EPERM (production machines). Thus, - // the test simply ensures that they do fail. - EXPECT_THAT(rt_sigqueueinfo(-1, SIGUSR1, &uinfo), SyscallFails()); - EXPECT_FALSE(has_saved_info); - EXPECT_THAT(rt_sigqueueinfo(0, SIGUSR1, &uinfo), SyscallFails()); - EXPECT_FALSE(has_saved_info); -} - -TEST_F(RtSignalTest, InvalidCodes) { - siginfo_t uinfo; - - // We need a child for the code checks to apply. If the process is delivering - // to itself, then it can use whatever codes it wants and they will go - // through. - pid_t child = fork(); - if (child == 0) { - _exit(1); - } - ASSERT_THAT(child, SyscallSucceeds()); - - // These are not allowed for child processes. - uinfo.si_code = 0; // SI_USER. - EXPECT_THAT(rt_sigqueueinfo(child, SIGUSR1, &uinfo), - SyscallFailsWithErrno(EPERM)); - uinfo.si_code = 0x80; // SI_KERNEL. - EXPECT_THAT(rt_sigqueueinfo(child, SIGUSR1, &uinfo), - SyscallFailsWithErrno(EPERM)); - uinfo.si_code = -6; // SI_TKILL. - EXPECT_THAT(rt_sigqueueinfo(child, SIGUSR1, &uinfo), - SyscallFailsWithErrno(EPERM)); - uinfo.si_code = -1; // SI_QUEUE (allowed). - EXPECT_THAT(rt_sigqueueinfo(child, SIGUSR1, &uinfo), SyscallSucceeds()); - - // Join the child process. - EXPECT_THAT(waitpid(child, nullptr, 0), SyscallSucceeds()); -} - -TEST_F(RtSignalTest, ValueDelivered) { - siginfo_t uinfo; - uinfo.si_code = -1; // SI_QUEUE (allowed). - uinfo.si_errno = 0x1234; - - EXPECT_EQ(saved_info.si_errno, 0x0); - EXPECT_THAT(rt_sigqueueinfo(getpid(), SIGUSR1, &uinfo), SyscallSucceeds()); - EXPECT_TRUE(has_saved_info); - EXPECT_EQ(saved_info.si_errno, 0x1234); -} - -TEST_F(RtSignalTest, SignoMatch) { - auto action2_cleanup = ASSERT_NO_ERRNO_AND_VALUE(SetupSignalHandler(SIGUSR2)); - auto mask2_cleanup = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_UNBLOCK, SIGUSR2)); - - siginfo_t uinfo; - uinfo.si_code = -1; // SI_QUEUE (allowed). - - EXPECT_THAT(rt_sigqueueinfo(getpid(), SIGUSR1, &uinfo), SyscallSucceeds()); - EXPECT_TRUE(has_saved_info); - EXPECT_EQ(saved_info.si_signo, SIGUSR1); - - ClearSavedInfo(); - - EXPECT_THAT(rt_sigqueueinfo(getpid(), SIGUSR2, &uinfo), SyscallSucceeds()); - EXPECT_TRUE(has_saved_info); - EXPECT_EQ(saved_info.si_signo, SIGUSR2); -} - -} // namespace - -} // namespace testing -} // namespace gvisor - -int main(int argc, char** argv) { - // These tests depend on delivering SIGUSR1/2 to the main thread (so they can - // synchronously check has_saved_info). Block these so that any other threads - // created by TestInit will also have them blocked. - sigset_t set; - sigemptyset(&set); - sigaddset(&set, SIGUSR1); - sigaddset(&set, SIGUSR2); - TEST_PCHECK(sigprocmask(SIG_BLOCK, &set, nullptr) == 0); - - gvisor::testing::TestInit(&argc, &argv); - - return RUN_ALL_TESTS(); -} diff --git a/test/syscalls/linux/sched.cc b/test/syscalls/linux/sched.cc deleted file mode 100644 index 735e99411..000000000 --- a/test/syscalls/linux/sched.cc +++ /dev/null @@ -1,71 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <sched.h> - -#include "gtest/gtest.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -// In linux, pid is limited to 29 bits because how futex is implemented. -constexpr int kImpossiblePID = (1 << 29) + 1; - -TEST(SchedGetparamTest, ReturnsZero) { - struct sched_param param; - EXPECT_THAT(sched_getparam(getpid(), ¶m), SyscallSucceeds()); - EXPECT_EQ(param.sched_priority, 0); - EXPECT_THAT(sched_getparam(/*pid=*/0, ¶m), SyscallSucceeds()); - EXPECT_EQ(param.sched_priority, 0); -} - -TEST(SchedGetparamTest, InvalidPIDReturnsEINVAL) { - struct sched_param param; - EXPECT_THAT(sched_getparam(/*pid=*/-1, ¶m), - SyscallFailsWithErrno(EINVAL)); -} - -TEST(SchedGetparamTest, ImpossiblePIDReturnsESRCH) { - struct sched_param param; - EXPECT_THAT(sched_getparam(kImpossiblePID, ¶m), - SyscallFailsWithErrno(ESRCH)); -} - -TEST(SchedGetparamTest, NullParamReturnsEINVAL) { - EXPECT_THAT(sched_getparam(0, nullptr), SyscallFailsWithErrno(EINVAL)); -} - -TEST(SchedGetschedulerTest, ReturnsSchedOther) { - EXPECT_THAT(sched_getscheduler(getpid()), - SyscallSucceedsWithValue(SCHED_OTHER)); - EXPECT_THAT(sched_getscheduler(/*pid=*/0), - SyscallSucceedsWithValue(SCHED_OTHER)); -} - -TEST(SchedGetschedulerTest, ReturnsEINVAL) { - EXPECT_THAT(sched_getscheduler(/*pid=*/-1), SyscallFailsWithErrno(EINVAL)); -} - -TEST(SchedGetschedulerTest, ReturnsESRCH) { - EXPECT_THAT(sched_getscheduler(kImpossiblePID), SyscallFailsWithErrno(ESRCH)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/sched_yield.cc b/test/syscalls/linux/sched_yield.cc deleted file mode 100644 index 5d24f5b58..000000000 --- a/test/syscalls/linux/sched_yield.cc +++ /dev/null @@ -1,33 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <sched.h> - -#include "gtest/gtest.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -TEST(SchedYieldTest, Success) { - EXPECT_THAT(sched_yield(), SyscallSucceeds()); - EXPECT_THAT(sched_yield(), SyscallSucceeds()); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/seccomp.cc b/test/syscalls/linux/seccomp.cc deleted file mode 100644 index 2c947feb7..000000000 --- a/test/syscalls/linux/seccomp.cc +++ /dev/null @@ -1,415 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <linux/audit.h> -#include <linux/filter.h> -#include <linux/seccomp.h> -#include <pthread.h> -#include <sched.h> -#include <signal.h> -#include <string.h> -#include <sys/prctl.h> -#include <sys/syscall.h> -#include <time.h> -#include <ucontext.h> -#include <unistd.h> - -#include <atomic> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "absl/base/macros.h" -#include "test/util/logging.h" -#include "test/util/memory_util.h" -#include "test/util/multiprocess_util.h" -#include "test/util/posix_error.h" -#include "test/util/proc_util.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -#ifndef SYS_SECCOMP -#define SYS_SECCOMP 1 -#endif - -namespace gvisor { -namespace testing { - -namespace { - -// A syscall not implemented by Linux that we don't expect to be called. -#ifdef __x86_64__ -constexpr uint32_t kFilteredSyscall = SYS_vserver; -#elif __aarch64__ -// Use the last of arch_specific_syscalls which are not implemented on arm64. -constexpr uint32_t kFilteredSyscall = SYS_arch_specific_syscall + 15; -#endif - -// Applies a seccomp-bpf filter that returns `filtered_result` for -// `sysno` and allows all other syscalls. Async-signal-safe. -void ApplySeccompFilter(uint32_t sysno, uint32_t filtered_result, - uint32_t flags = 0) { - // "Prior to [PR_SET_SECCOMP], the task must call prctl(PR_SET_NO_NEW_PRIVS, - // 1) or run with CAP_SYS_ADMIN privileges in its namespace." - - // Documentation/prctl/seccomp_filter.txt - // - // prctl(PR_SET_NO_NEW_PRIVS, 1) may be called repeatedly; calls after the - // first are no-ops. - TEST_PCHECK(prctl(PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0) == 0); - MaybeSave(); - - struct sock_filter filter[] = { - // A = seccomp_data.arch - BPF_STMT(BPF_LD | BPF_ABS | BPF_W, 4), - // if (A != AUDIT_ARCH_X86_64) goto kill - BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, AUDIT_ARCH_X86_64, 0, 4), - // A = seccomp_data.nr - BPF_STMT(BPF_LD | BPF_ABS | BPF_W, 0), - // if (A != sysno) goto allow - BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, sysno, 0, 1), - // return filtered_result - BPF_STMT(BPF_RET | BPF_K, filtered_result), - // allow: return SECCOMP_RET_ALLOW - BPF_STMT(BPF_RET | BPF_K, SECCOMP_RET_ALLOW), - // kill: return SECCOMP_RET_KILL - BPF_STMT(BPF_RET | BPF_K, SECCOMP_RET_KILL), - }; - struct sock_fprog prog; - prog.len = ABSL_ARRAYSIZE(filter); - prog.filter = filter; - if (flags) { - TEST_CHECK(syscall(__NR_seccomp, SECCOMP_SET_MODE_FILTER, flags, &prog) == - 0); - } else { - TEST_PCHECK(prctl(PR_SET_SECCOMP, SECCOMP_MODE_FILTER, &prog, 0, 0) == 0); - } - MaybeSave(); -} - -// Wrapper for sigaction. Async-signal-safe. -void RegisterSignalHandler(int signum, - void (*handler)(int, siginfo_t*, void*)) { - struct sigaction sa = {}; - sa.sa_sigaction = handler; - sigemptyset(&sa.sa_mask); - sa.sa_flags = SA_SIGINFO; - TEST_PCHECK(sigaction(signum, &sa, nullptr) == 0); - MaybeSave(); -} - -// All of the following tests execute in a subprocess to ensure that each test -// is run in a separate process. This avoids cross-contamination of seccomp -// state between tests, and is necessary to ensure that test processes killed -// by SECCOMP_RET_KILL are single-threaded (since SECCOMP_RET_KILL only kills -// the offending thread, not the whole thread group). - -TEST(SeccompTest, RetKillCausesDeathBySIGSYS) { - pid_t const pid = fork(); - if (pid == 0) { - // Register a signal handler for SIGSYS that we don't expect to be invoked. - RegisterSignalHandler( - SIGSYS, +[](int, siginfo_t*, void*) { _exit(1); }); - ApplySeccompFilter(kFilteredSyscall, SECCOMP_RET_KILL); - syscall(kFilteredSyscall); - TEST_CHECK_MSG(false, "Survived invocation of test syscall"); - } - ASSERT_THAT(pid, SyscallSucceeds()); - int status; - ASSERT_THAT(waitpid(pid, &status, 0), SyscallSucceedsWithValue(pid)); - EXPECT_TRUE(WIFSIGNALED(status) && WTERMSIG(status) == SIGSYS) - << "status " << status; -} - -TEST(SeccompTest, RetKillOnlyKillsOneThread) { - Mapping stack = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(2 * kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE)); - - pid_t const pid = fork(); - if (pid == 0) { - // Register a signal handler for SIGSYS that we don't expect to be invoked. - RegisterSignalHandler( - SIGSYS, +[](int, siginfo_t*, void*) { _exit(1); }); - ApplySeccompFilter(kFilteredSyscall, SECCOMP_RET_KILL); - // Pass CLONE_VFORK to block the original thread in the child process until - // the clone thread exits with SIGSYS. - // - // N.B. clone(2) is not officially async-signal-safe, but at minimum glibc's - // x86_64 implementation is safe. See glibc - // sysdeps/unix/sysv/linux/x86_64/clone.S. - clone( - +[](void* arg) { - syscall(kFilteredSyscall); // should kill the thread - _exit(1); // should be unreachable - return 2; // should be very unreachable, shut up the compiler - }, - stack.endptr(), - CLONE_FILES | CLONE_FS | CLONE_SIGHAND | CLONE_THREAD | CLONE_VM | - CLONE_VFORK, - nullptr); - _exit(0); - } - ASSERT_THAT(pid, SyscallSucceeds()); - int status; - ASSERT_THAT(waitpid(pid, &status, 0), SyscallSucceedsWithValue(pid)); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << "status " << status; -} - -TEST(SeccompTest, RetTrapCausesSIGSYS) { - pid_t const pid = fork(); - if (pid == 0) { - constexpr uint16_t kTrapValue = 0xdead; - RegisterSignalHandler( - SIGSYS, +[](int signo, siginfo_t* info, void* ucv) { - ucontext_t* uc = static_cast<ucontext_t*>(ucv); - // This is a signal handler, so we must stay async-signal-safe. - TEST_CHECK(info->si_signo == SIGSYS); - TEST_CHECK(info->si_code == SYS_SECCOMP); - TEST_CHECK(info->si_errno == kTrapValue); - TEST_CHECK(info->si_call_addr != nullptr); - TEST_CHECK(info->si_syscall == kFilteredSyscall); -#ifdef __x86_64__ - TEST_CHECK(info->si_arch == AUDIT_ARCH_X86_64); - TEST_CHECK(uc->uc_mcontext.gregs[REG_RAX] == kFilteredSyscall); -#endif // defined(__x86_64__) - _exit(0); - }); - ApplySeccompFilter(kFilteredSyscall, SECCOMP_RET_TRAP | kTrapValue); - syscall(kFilteredSyscall); - TEST_CHECK_MSG(false, "Survived invocation of test syscall"); - } - ASSERT_THAT(pid, SyscallSucceeds()); - int status; - ASSERT_THAT(waitpid(pid, &status, 0), SyscallSucceedsWithValue(pid)); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << "status " << status; -} - -#ifdef __x86_64__ - -constexpr uint64_t kVsyscallTimeEntry = 0xffffffffff600400; - -time_t vsyscall_time(time_t* t) { - return reinterpret_cast<time_t (*)(time_t*)>(kVsyscallTimeEntry)(t); -} - -TEST(SeccompTest, SeccompAppliesToVsyscall) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(IsVsyscallEnabled())); - - pid_t const pid = fork(); - if (pid == 0) { - constexpr uint16_t kTrapValue = 0xdead; - RegisterSignalHandler( - SIGSYS, +[](int signo, siginfo_t* info, void* ucv) { - ucontext_t* uc = static_cast<ucontext_t*>(ucv); - // This is a signal handler, so we must stay async-signal-safe. - TEST_CHECK(info->si_signo == SIGSYS); - TEST_CHECK(info->si_code == SYS_SECCOMP); - TEST_CHECK(info->si_errno == kTrapValue); - TEST_CHECK(info->si_call_addr != nullptr); - TEST_CHECK(info->si_syscall == SYS_time); - TEST_CHECK(info->si_arch == AUDIT_ARCH_X86_64); - TEST_CHECK(uc->uc_mcontext.gregs[REG_RAX] == SYS_time); - _exit(0); - }); - ApplySeccompFilter(SYS_time, SECCOMP_RET_TRAP | kTrapValue); - vsyscall_time(nullptr); // Should result in death. - TEST_CHECK_MSG(false, "Survived invocation of test syscall"); - } - ASSERT_THAT(pid, SyscallSucceeds()); - int status; - ASSERT_THAT(waitpid(pid, &status, 0), SyscallSucceedsWithValue(pid)); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << "status " << status; -} - -TEST(SeccompTest, RetKillVsyscallCausesDeathBySIGSYS) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(IsVsyscallEnabled())); - - pid_t const pid = fork(); - if (pid == 0) { - // Register a signal handler for SIGSYS that we don't expect to be invoked. - RegisterSignalHandler( - SIGSYS, +[](int, siginfo_t*, void*) { _exit(1); }); - ApplySeccompFilter(SYS_time, SECCOMP_RET_KILL); - vsyscall_time(nullptr); // Should result in death. - TEST_CHECK_MSG(false, "Survived invocation of test syscall"); - } - ASSERT_THAT(pid, SyscallSucceeds()); - int status; - ASSERT_THAT(waitpid(pid, &status, 0), SyscallSucceedsWithValue(pid)); - EXPECT_TRUE(WIFSIGNALED(status) && WTERMSIG(status) == SIGSYS) - << "status " << status; -} - -#endif // defined(__x86_64__) - -TEST(SeccompTest, RetTraceWithoutPtracerReturnsENOSYS) { - pid_t const pid = fork(); - if (pid == 0) { - ApplySeccompFilter(kFilteredSyscall, SECCOMP_RET_TRACE); - TEST_CHECK(syscall(kFilteredSyscall) == -1 && errno == ENOSYS); - _exit(0); - } - ASSERT_THAT(pid, SyscallSucceeds()); - int status; - ASSERT_THAT(waitpid(pid, &status, 0), SyscallSucceedsWithValue(pid)); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << "status " << status; -} - -TEST(SeccompTest, RetErrnoReturnsErrno) { - pid_t const pid = fork(); - if (pid == 0) { - // ENOTNAM: "Not a XENIX named type file" - ApplySeccompFilter(kFilteredSyscall, SECCOMP_RET_ERRNO | ENOTNAM); - TEST_CHECK(syscall(kFilteredSyscall) == -1 && errno == ENOTNAM); - _exit(0); - } - ASSERT_THAT(pid, SyscallSucceeds()); - int status; - ASSERT_THAT(waitpid(pid, &status, 0), SyscallSucceedsWithValue(pid)); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << "status " << status; -} - -TEST(SeccompTest, RetAllowAllowsSyscall) { - pid_t const pid = fork(); - if (pid == 0) { - ApplySeccompFilter(kFilteredSyscall, SECCOMP_RET_ALLOW); - TEST_CHECK(syscall(kFilteredSyscall) == -1 && errno == ENOSYS); - _exit(0); - } - ASSERT_THAT(pid, SyscallSucceeds()); - int status; - ASSERT_THAT(waitpid(pid, &status, 0), SyscallSucceedsWithValue(pid)); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << "status " << status; -} - -// This test will validate that TSYNC will apply to all threads. -TEST(SeccompTest, TsyncAppliesToAllThreads) { - Mapping stack = ASSERT_NO_ERRNO_AND_VALUE( - MmapAnon(2 * kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE)); - - // We don't want to apply this policy to other test runner threads, so fork. - const pid_t pid = fork(); - - if (pid == 0) { - // First check that we receive a ENOSYS before the policy is applied. - TEST_CHECK(syscall(kFilteredSyscall) == -1 && errno == ENOSYS); - - // N.B. clone(2) is not officially async-signal-safe, but at minimum glibc's - // x86_64 implementation is safe. See glibc - // sysdeps/unix/sysv/linux/x86_64/clone.S. - clone( - +[](void* arg) { - ApplySeccompFilter(kFilteredSyscall, SECCOMP_RET_ERRNO | ENOTNAM, - SECCOMP_FILTER_FLAG_TSYNC); - return 0; - }, - stack.endptr(), - CLONE_FILES | CLONE_FS | CLONE_SIGHAND | CLONE_THREAD | CLONE_VM | - CLONE_VFORK, - nullptr); - - // Because we're using CLONE_VFORK this thread will be blocked until - // the second thread has released resources to our virtual memory, since - // we're not execing that will happen on _exit. - - // Now verify that the policy applied to this thread too. - TEST_CHECK(syscall(kFilteredSyscall) == -1 && errno == ENOTNAM); - _exit(0); - } - - ASSERT_THAT(pid, SyscallSucceeds()); - int status = 0; - ASSERT_THAT(waitpid(pid, &status, 0), SyscallSucceedsWithValue(pid)); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << "status " << status; -} - -// This test will validate that seccomp(2) rejects unsupported flags. -TEST(SeccompTest, SeccompRejectsUnknownFlags) { - constexpr uint32_t kInvalidFlag = 123; - ASSERT_THAT( - syscall(__NR_seccomp, SECCOMP_SET_MODE_FILTER, kInvalidFlag, nullptr), - SyscallFailsWithErrno(EINVAL)); -} - -TEST(SeccompTest, LeastPermissiveFilterReturnValueApplies) { - // This is RetKillCausesDeathBySIGSYS, plus extra filters before and after the - // one that causes the kill that should be ignored. - pid_t const pid = fork(); - if (pid == 0) { - RegisterSignalHandler( - SIGSYS, +[](int, siginfo_t*, void*) { _exit(1); }); - ApplySeccompFilter(kFilteredSyscall, SECCOMP_RET_TRACE); - ApplySeccompFilter(kFilteredSyscall, SECCOMP_RET_KILL); - ApplySeccompFilter(kFilteredSyscall, SECCOMP_RET_ERRNO | ENOTNAM); - syscall(kFilteredSyscall); - TEST_CHECK_MSG(false, "Survived invocation of test syscall"); - } - ASSERT_THAT(pid, SyscallSucceeds()); - int status; - ASSERT_THAT(waitpid(pid, &status, 0), SyscallSucceedsWithValue(pid)); - EXPECT_TRUE(WIFSIGNALED(status) && WTERMSIG(status) == SIGSYS) - << "status " << status; -} - -// Passed as argv[1] to cause the test binary to invoke kFilteredSyscall and -// exit. Not a real flag since flag parsing happens during initialization, -// which may create threads. -constexpr char kInvokeFilteredSyscallFlag[] = "--seccomp_test_child"; - -TEST(SeccompTest, FiltersPreservedAcrossForkAndExecve) { - ExecveArray const grandchild_argv( - {"/proc/self/exe", kInvokeFilteredSyscallFlag}); - - pid_t const pid = fork(); - if (pid == 0) { - ApplySeccompFilter(kFilteredSyscall, SECCOMP_RET_KILL); - pid_t const grandchild_pid = fork(); - if (grandchild_pid == 0) { - execve(grandchild_argv.get()[0], grandchild_argv.get(), - /* envp = */ nullptr); - TEST_PCHECK_MSG(false, "execve failed"); - } - int status; - TEST_PCHECK(waitpid(grandchild_pid, &status, 0) == grandchild_pid); - TEST_CHECK(WIFSIGNALED(status) && WTERMSIG(status) == SIGSYS); - _exit(0); - } - ASSERT_THAT(pid, SyscallSucceeds()); - int status; - ASSERT_THAT(waitpid(pid, &status, 0), SyscallSucceedsWithValue(pid)); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << "status " << status; -} - -} // namespace - -} // namespace testing -} // namespace gvisor - -int main(int argc, char** argv) { - if (argc >= 2 && - strcmp(argv[1], gvisor::testing::kInvokeFilteredSyscallFlag) == 0) { - syscall(gvisor::testing::kFilteredSyscall); - exit(0); - } - - gvisor::testing::TestInit(&argc, &argv); - return RUN_ALL_TESTS(); -} diff --git a/test/syscalls/linux/select.cc b/test/syscalls/linux/select.cc deleted file mode 100644 index be2364fb8..000000000 --- a/test/syscalls/linux/select.cc +++ /dev/null @@ -1,168 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <fcntl.h> -#include <sys/resource.h> -#include <sys/select.h> -#include <sys/time.h> - -#include <climits> -#include <csignal> -#include <cstdio> - -#include "gtest/gtest.h" -#include "absl/time/time.h" -#include "test/syscalls/linux/base_poll_test.h" -#include "test/util/file_descriptor.h" -#include "test/util/multiprocess_util.h" -#include "test/util/posix_error.h" -#include "test/util/rlimit_util.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -class SelectTest : public BasePollTest { - protected: - void SetUp() override { BasePollTest::SetUp(); } - void TearDown() override { BasePollTest::TearDown(); } -}; - -// See that when there are no FD sets, select behaves like sleep. -TEST_F(SelectTest, NullFds) { - struct timeval timeout = absl::ToTimeval(absl::Milliseconds(10)); - ASSERT_THAT(select(0, nullptr, nullptr, nullptr, &timeout), - SyscallSucceeds()); - EXPECT_EQ(timeout.tv_sec, 0); - EXPECT_EQ(timeout.tv_usec, 0); - - timeout = absl::ToTimeval(absl::Milliseconds(10)); - ASSERT_THAT(select(1, nullptr, nullptr, nullptr, &timeout), - SyscallSucceeds()); - EXPECT_EQ(timeout.tv_sec, 0); - EXPECT_EQ(timeout.tv_usec, 0); -} - -TEST_F(SelectTest, NegativeNfds) { - EXPECT_THAT(select(-1, nullptr, nullptr, nullptr, nullptr), - SyscallFailsWithErrno(EINVAL)); - EXPECT_THAT(select(-100000, nullptr, nullptr, nullptr, nullptr), - SyscallFailsWithErrno(EINVAL)); - EXPECT_THAT(select(INT_MIN, nullptr, nullptr, nullptr, nullptr), - SyscallFailsWithErrno(EINVAL)); -} - -TEST_F(SelectTest, ClosedFds) { - auto temp_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(temp_file.path(), O_RDONLY)); - - // We can't rely on a file descriptor being closed in a multi threaded - // application so fork to get a clean process. - EXPECT_THAT(InForkedProcess([&] { - int fd_num = fd.get(); - fd.reset(); - - fd_set read_set; - FD_ZERO(&read_set); - FD_SET(fd_num, &read_set); - - struct timeval timeout = - absl::ToTimeval(absl::Milliseconds(10)); - TEST_PCHECK(select(fd_num + 1, &read_set, nullptr, nullptr, - &timeout) != 0); - TEST_PCHECK(errno == EBADF); - }), - IsPosixErrorOkAndHolds(0)); -} - -TEST_F(SelectTest, ZeroTimeout) { - struct timeval timeout = {}; - EXPECT_THAT(select(1, nullptr, nullptr, nullptr, &timeout), - SyscallSucceeds()); - // Ignore timeout as its value is now undefined. -} - -// If random S/R interrupts the select, SIGALRM may be delivered before select -// restarts, causing the select to hang forever. -TEST_F(SelectTest, NoTimeout_NoRandomSave) { - // When there's no timeout, select may never return so set a timer. - SetTimer(absl::Milliseconds(100)); - // See that we get interrupted by the timer. - ASSERT_THAT(select(1, nullptr, nullptr, nullptr, nullptr), - SyscallFailsWithErrno(EINTR)); - EXPECT_TRUE(TimerFired()); -} - -TEST_F(SelectTest, InvalidTimeoutNegative) { - struct timeval timeout = absl::ToTimeval(absl::Microseconds(-1)); - EXPECT_THAT(select(1, nullptr, nullptr, nullptr, &timeout), - SyscallFailsWithErrno(EINVAL)); - // Ignore timeout as its value is now undefined. -} - -// Verify that a signal interrupts select. -// -// If random S/R interrupts the select, SIGALRM may be delivered before select -// restarts, causing the select to hang forever. -TEST_F(SelectTest, InterruptedBySignal_NoRandomSave) { - absl::Duration duration(absl::Seconds(5)); - struct timeval timeout = absl::ToTimeval(duration); - SetTimer(absl::Milliseconds(100)); - ASSERT_FALSE(TimerFired()); - ASSERT_THAT(select(1, nullptr, nullptr, nullptr, &timeout), - SyscallFailsWithErrno(EINTR)); - EXPECT_TRUE(TimerFired()); - // Ignore timeout as its value is now undefined. -} - -TEST_F(SelectTest, IgnoreBitsAboveNfds) { - // fd_set is a bit array with at least FD_SETSIZE bits. Test that bits - // corresponding to file descriptors above nfds are ignored. - fd_set read_set; - FD_ZERO(&read_set); - constexpr int kNfds = 1; - for (int fd = kNfds; fd < FD_SETSIZE; fd++) { - FD_SET(fd, &read_set); - } - // Pass a zero timeout so that select returns immediately. - struct timeval timeout = {}; - EXPECT_THAT(select(kNfds, &read_set, nullptr, nullptr, &timeout), - SyscallSucceedsWithValue(0)); -} - -// This test illustrates Linux's behavior of 'select' calls passing after -// setrlimit RLIMIT_NOFILE is called. In particular, versions of sshd rely on -// this behavior. See b/122318458. -TEST_F(SelectTest, SetrlimitCallNOFILE) { - fd_set read_set; - FD_ZERO(&read_set); - timeval timeout = {}; - const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE( - Open(NewTempAbsPath(), O_RDONLY | O_CREAT, S_IRUSR)); - - Cleanup reset_rlimit = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSetSoftRlimit(RLIMIT_NOFILE, 0)); - - FD_SET(fd.get(), &read_set); - // this call with zero timeout should return immediately - EXPECT_THAT(select(fd.get() + 1, &read_set, nullptr, nullptr, &timeout), - SyscallSucceeds()); -} - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/semaphore.cc b/test/syscalls/linux/semaphore.cc deleted file mode 100644 index e9b131ca9..000000000 --- a/test/syscalls/linux/semaphore.cc +++ /dev/null @@ -1,491 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <sys/ipc.h> -#include <sys/sem.h> -#include <sys/types.h> - -#include <atomic> -#include <cerrno> -#include <ctime> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "absl/base/macros.h" -#include "absl/memory/memory.h" -#include "absl/synchronization/mutex.h" -#include "absl/time/clock.h" -#include "test/util/capability_util.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { -namespace { - -class AutoSem { - public: - explicit AutoSem(int id) : id_(id) {} - ~AutoSem() { - if (id_ >= 0) { - EXPECT_THAT(semctl(id_, 0, IPC_RMID), SyscallSucceeds()); - } - } - - int release() { - int old = id_; - id_ = -1; - return old; - } - - int get() { return id_; } - - private: - int id_ = -1; -}; - -TEST(SemaphoreTest, SemGet) { - // Test creation and lookup. - AutoSem sem(semget(1, 10, IPC_CREAT)); - ASSERT_THAT(sem.get(), SyscallSucceeds()); - EXPECT_THAT(semget(1, 10, IPC_CREAT), SyscallSucceedsWithValue(sem.get())); - EXPECT_THAT(semget(1, 9, IPC_CREAT), SyscallSucceedsWithValue(sem.get())); - - // Creation and lookup failure cases. - EXPECT_THAT(semget(1, 11, IPC_CREAT), SyscallFailsWithErrno(EINVAL)); - EXPECT_THAT(semget(1, -1, IPC_CREAT), SyscallFailsWithErrno(EINVAL)); - EXPECT_THAT(semget(1, 10, IPC_CREAT | IPC_EXCL), - SyscallFailsWithErrno(EEXIST)); - EXPECT_THAT(semget(2, 1, 0), SyscallFailsWithErrno(ENOENT)); - EXPECT_THAT(semget(2, 0, IPC_CREAT), SyscallFailsWithErrno(EINVAL)); - - // Private semaphores never conflict. - AutoSem sem2(semget(IPC_PRIVATE, 1, 0)); - AutoSem sem3(semget(IPC_PRIVATE, 1, 0)); - ASSERT_THAT(sem2.get(), SyscallSucceeds()); - EXPECT_NE(sem.get(), sem2.get()); - ASSERT_THAT(sem3.get(), SyscallSucceeds()); - EXPECT_NE(sem3.get(), sem2.get()); -} - -// Tests simple operations that shouldn't block in a single-thread. -TEST(SemaphoreTest, SemOpSingleNoBlock) { - AutoSem sem(semget(IPC_PRIVATE, 1, 0600 | IPC_CREAT)); - ASSERT_THAT(sem.get(), SyscallSucceeds()); - - struct sembuf buf = {}; - buf.sem_op = 1; - ASSERT_THAT(semop(sem.get(), &buf, 1), SyscallSucceeds()); - - buf.sem_op = -1; - ASSERT_THAT(semop(sem.get(), &buf, 1), SyscallSucceeds()); - - buf.sem_op = 0; - ASSERT_THAT(semop(sem.get(), &buf, 1), SyscallSucceeds()); - - // Error cases with invalid values. - ASSERT_THAT(semop(sem.get() + 1, &buf, 1), SyscallFailsWithErrno(EINVAL)); - - buf.sem_num = 1; - ASSERT_THAT(semop(sem.get(), &buf, 1), SyscallFailsWithErrno(EFBIG)); - - ASSERT_THAT(semop(sem.get(), nullptr, 0), SyscallFailsWithErrno(EINVAL)); -} - -// Tests multiple operations that shouldn't block in a single-thread. -TEST(SemaphoreTest, SemOpMultiNoBlock) { - AutoSem sem(semget(IPC_PRIVATE, 4, 0600 | IPC_CREAT)); - ASSERT_THAT(sem.get(), SyscallSucceeds()); - - struct sembuf bufs[5] = {}; - bufs[0].sem_num = 0; - bufs[0].sem_op = 10; - bufs[0].sem_flg = 0; - - bufs[1].sem_num = 1; - bufs[1].sem_op = 2; - bufs[1].sem_flg = 0; - - bufs[2].sem_num = 2; - bufs[2].sem_op = 3; - bufs[2].sem_flg = 0; - - bufs[3].sem_num = 0; - bufs[3].sem_op = -5; - bufs[3].sem_flg = 0; - - bufs[4].sem_num = 2; - bufs[4].sem_op = 2; - bufs[4].sem_flg = 0; - - ASSERT_THAT(semop(sem.get(), bufs, ABSL_ARRAYSIZE(bufs)), SyscallSucceeds()); - - ASSERT_THAT(semctl(sem.get(), 0, GETVAL), SyscallSucceedsWithValue(5)); - ASSERT_THAT(semctl(sem.get(), 1, GETVAL), SyscallSucceedsWithValue(2)); - ASSERT_THAT(semctl(sem.get(), 2, GETVAL), SyscallSucceedsWithValue(5)); - ASSERT_THAT(semctl(sem.get(), 3, GETVAL), SyscallSucceedsWithValue(0)); - - for (auto& b : bufs) { - b.sem_op = -b.sem_op; - } - // 0 and 3 order must be reversed, otherwise it will block. - std::swap(bufs[0].sem_op, bufs[3].sem_op); - ASSERT_THAT(RetryEINTR(semop)(sem.get(), bufs, ABSL_ARRAYSIZE(bufs)), - SyscallSucceeds()); - - // All semaphores should be back to 0 now. - for (size_t i = 0; i < 4; ++i) { - ASSERT_THAT(semctl(sem.get(), i, GETVAL), SyscallSucceedsWithValue(0)); - } -} - -// Makes a best effort attempt to ensure that operation would block. -TEST(SemaphoreTest, SemOpBlock) { - AutoSem sem(semget(IPC_PRIVATE, 1, 0600 | IPC_CREAT)); - ASSERT_THAT(sem.get(), SyscallSucceeds()); - - std::atomic<int> blocked = ATOMIC_VAR_INIT(1); - ScopedThread th([&sem, &blocked] { - absl::SleepFor(absl::Milliseconds(100)); - ASSERT_EQ(blocked.load(), 1); - - struct sembuf buf = {}; - buf.sem_op = 1; - ASSERT_THAT(RetryEINTR(semop)(sem.get(), &buf, 1), SyscallSucceeds()); - }); - - struct sembuf buf = {}; - buf.sem_op = -1; - ASSERT_THAT(RetryEINTR(semop)(sem.get(), &buf, 1), SyscallSucceeds()); - blocked.store(0); -} - -// Tests that IPC_NOWAIT returns with no wait. -TEST(SemaphoreTest, SemOpNoBlock) { - AutoSem sem(semget(IPC_PRIVATE, 1, 0600 | IPC_CREAT)); - ASSERT_THAT(sem.get(), SyscallSucceeds()); - - struct sembuf buf = {}; - buf.sem_flg = IPC_NOWAIT; - - buf.sem_op = -1; - ASSERT_THAT(semop(sem.get(), &buf, 1), SyscallFailsWithErrno(EAGAIN)); - - buf.sem_op = 1; - ASSERT_THAT(semop(sem.get(), &buf, 1), SyscallSucceeds()); - - buf.sem_op = 0; - ASSERT_THAT(semop(sem.get(), &buf, 1), SyscallFailsWithErrno(EAGAIN)); -} - -// Test runs 2 threads, one signals the other waits the same number of times. -TEST(SemaphoreTest, SemOpSimple) { - AutoSem sem(semget(IPC_PRIVATE, 1, 0600 | IPC_CREAT)); - ASSERT_THAT(sem.get(), SyscallSucceeds()); - - constexpr size_t kLoops = 100; - ScopedThread th([&sem] { - struct sembuf buf = {}; - buf.sem_op = 1; - for (size_t i = 0; i < kLoops; i++) { - // Sleep to prevent making all increments in one shot without letting - // the waiter wait. - absl::SleepFor(absl::Milliseconds(1)); - ASSERT_THAT(semop(sem.get(), &buf, 1), SyscallSucceeds()); - } - }); - - struct sembuf buf = {}; - buf.sem_op = -1; - for (size_t i = 0; i < kLoops; i++) { - ASSERT_THAT(RetryEINTR(semop)(sem.get(), &buf, 1), SyscallSucceeds()); - } -} - -// Tests that semaphore can be removed while there are waiters. -// NoRandomSave: Test relies on timing that random save throws off. -TEST(SemaphoreTest, SemOpRemoveWithWaiter_NoRandomSave) { - AutoSem sem(semget(IPC_PRIVATE, 2, 0600 | IPC_CREAT)); - ASSERT_THAT(sem.get(), SyscallSucceeds()); - - ScopedThread th([&sem] { - absl::SleepFor(absl::Milliseconds(250)); - ASSERT_THAT(semctl(sem.release(), 0, IPC_RMID), SyscallSucceeds()); - }); - - // This must happen before IPC_RMID runs above. Otherwise it fails with EINVAL - // instead because the semaphore has already been removed. - struct sembuf buf = {}; - buf.sem_op = -1; - ASSERT_THAT(RetryEINTR(semop)(sem.get(), &buf, 1), - SyscallFailsWithErrno(EIDRM)); -} - -// Semaphore isn't fair. It will execute any waiter that can satisfy the -// request even if it gets in front of other waiters. -TEST(SemaphoreTest, SemOpBestFitExecution) { - AutoSem sem(semget(IPC_PRIVATE, 1, 0600 | IPC_CREAT)); - ASSERT_THAT(sem.get(), SyscallSucceeds()); - - ScopedThread th([&sem] { - struct sembuf buf = {}; - buf.sem_op = -2; - ASSERT_THAT(RetryEINTR(semop)(sem.get(), &buf, 1), SyscallFails()); - // Ensure that wait will only unblock when the semaphore is removed. On - // EINTR retry it may race with deletion and return EINVAL. - ASSERT_TRUE(errno == EIDRM || errno == EINVAL) << "errno=" << errno; - }); - - // Ensures that '-1' below will unblock even though '-10' above is waiting - // for the same semaphore. - for (size_t i = 0; i < 10; ++i) { - struct sembuf buf = {}; - buf.sem_op = 1; - ASSERT_THAT(RetryEINTR(semop)(sem.get(), &buf, 1), SyscallSucceeds()); - - absl::SleepFor(absl::Milliseconds(10)); - - buf.sem_op = -1; - ASSERT_THAT(RetryEINTR(semop)(sem.get(), &buf, 1), SyscallSucceeds()); - } - - ASSERT_THAT(semctl(sem.release(), 0, IPC_RMID), SyscallSucceeds()); -} - -// Executes random operations in multiple threads and verify correctness. -TEST(SemaphoreTest, SemOpRandom) { - // Don't do cooperative S/R tests because there are too many syscalls in - // this test, - const DisableSave ds; - - AutoSem sem(semget(IPC_PRIVATE, 1, 0600 | IPC_CREAT)); - ASSERT_THAT(sem.get(), SyscallSucceeds()); - - // Protects the seed below. - absl::Mutex mutex; - uint32_t seed = time(nullptr); - - int count = 0; // Tracks semaphore value. - bool done = false; // Tells waiters to stop after signal threads are done. - - // These threads will wait in a loop. - std::unique_ptr<ScopedThread> decs[5]; - for (auto& dec : decs) { - dec = absl::make_unique<ScopedThread>([&sem, &mutex, &count, &seed, &done] { - for (size_t i = 0; i < 500; ++i) { - int16_t val; - { - absl::MutexLock l(&mutex); - if (done) { - return; - } - val = (rand_r(&seed) % 10 + 1); // Rand between 1 and 10. - count -= val; - } - struct sembuf buf = {}; - buf.sem_op = -val; - ASSERT_THAT(RetryEINTR(semop)(sem.get(), &buf, 1), SyscallSucceeds()); - absl::SleepFor(absl::Milliseconds(val * 2)); - } - }); - } - - // These threads will wait for zero in a loop. - std::unique_ptr<ScopedThread> zeros[5]; - for (auto& zero : zeros) { - zero = absl::make_unique<ScopedThread>([&sem, &mutex, &done] { - for (size_t i = 0; i < 500; ++i) { - { - absl::MutexLock l(&mutex); - if (done) { - return; - } - } - struct sembuf buf = {}; - buf.sem_op = 0; - ASSERT_THAT(RetryEINTR(semop)(sem.get(), &buf, 1), SyscallSucceeds()); - absl::SleepFor(absl::Milliseconds(10)); - } - }); - } - - // These threads will signal in a loop. - std::unique_ptr<ScopedThread> incs[5]; - for (auto& inc : incs) { - inc = absl::make_unique<ScopedThread>([&sem, &mutex, &count, &seed] { - for (size_t i = 0; i < 500; ++i) { - int16_t val; - { - absl::MutexLock l(&mutex); - val = (rand_r(&seed) % 10 + 1); // Rand between 1 and 10. - count += val; - } - struct sembuf buf = {}; - buf.sem_op = val; - ASSERT_THAT(semop(sem.get(), &buf, 1), SyscallSucceeds()); - absl::SleepFor(absl::Milliseconds(val * 2)); - } - }); - } - - // First wait for signal threads to be done. - for (auto& inc : incs) { - inc->Join(); - } - - // Now there could be waiters blocked (remember operations are random). - // Notify waiters that we're done and signal semaphore just the right amount. - { - absl::MutexLock l(&mutex); - done = true; - struct sembuf buf = {}; - buf.sem_op = -count; - ASSERT_THAT(semop(sem.get(), &buf, 1), SyscallSucceeds()); - } - - // Now all waiters should unblock and exit. - for (auto& dec : decs) { - dec->Join(); - } - for (auto& zero : zeros) { - zero->Join(); - } -} - -TEST(SemaphoreTest, SemOpNamespace) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_ADMIN))); - - AutoSem sem(semget(123, 1, 0600 | IPC_CREAT | IPC_EXCL)); - ASSERT_THAT(sem.get(), SyscallSucceeds()); - - ScopedThread([]() { - EXPECT_THAT(unshare(CLONE_NEWIPC), SyscallSucceeds()); - AutoSem sem(semget(123, 1, 0600 | IPC_CREAT | IPC_EXCL)); - ASSERT_THAT(sem.get(), SyscallSucceeds()); - }); -} - -TEST(SemaphoreTest, SemCtlVal) { - AutoSem sem(semget(IPC_PRIVATE, 1, 0600 | IPC_CREAT)); - ASSERT_THAT(sem.get(), SyscallSucceeds()); - - // Semaphore must start with 0. - EXPECT_THAT(semctl(sem.get(), 0, GETVAL), SyscallSucceedsWithValue(0)); - - // Increase value and ensure waiters are woken up. - ScopedThread th([&sem] { - struct sembuf buf = {}; - buf.sem_op = -10; - ASSERT_THAT(RetryEINTR(semop)(sem.get(), &buf, 1), SyscallSucceeds()); - }); - - ASSERT_THAT(semctl(sem.get(), 0, SETVAL, 9), SyscallSucceeds()); - EXPECT_THAT(semctl(sem.get(), 0, GETVAL), SyscallSucceedsWithValue(9)); - - ASSERT_THAT(semctl(sem.get(), 0, SETVAL, 20), SyscallSucceeds()); - const int value = semctl(sem.get(), 0, GETVAL); - // 10 or 20 because it could have raced with waiter above. - EXPECT_TRUE(value == 10 || value == 20) << "value=" << value; - th.Join(); - - // Set it back to 0 and ensure that waiters are woken up. - ScopedThread thZero([&sem] { - struct sembuf buf = {}; - buf.sem_op = 0; - ASSERT_THAT(RetryEINTR(semop)(sem.get(), &buf, 1), SyscallSucceeds()); - }); - ASSERT_THAT(semctl(sem.get(), 0, SETVAL, 0), SyscallSucceeds()); - EXPECT_THAT(semctl(sem.get(), 0, GETVAL), SyscallSucceedsWithValue(0)); - thZero.Join(); -} - -TEST(SemaphoreTest, SemCtlValAll) { - AutoSem sem(semget(IPC_PRIVATE, 3, 0600 | IPC_CREAT)); - ASSERT_THAT(sem.get(), SyscallSucceeds()); - - // Semaphores must start with 0. - uint16_t get[3] = {10, 10, 10}; - EXPECT_THAT(semctl(sem.get(), 1, GETALL, get), SyscallSucceedsWithValue(0)); - for (auto v : get) { - EXPECT_EQ(v, 0); - } - - // SetAll and check that they were set. - uint16_t vals[3] = {0, 10, 20}; - EXPECT_THAT(semctl(sem.get(), 1, SETALL, vals), SyscallSucceedsWithValue(0)); - EXPECT_THAT(semctl(sem.get(), 1, GETALL, get), SyscallSucceedsWithValue(0)); - for (size_t i = 0; i < ABSL_ARRAYSIZE(vals); ++i) { - EXPECT_EQ(get[i], vals[i]); - } - - EXPECT_THAT(semctl(sem.get(), 1, SETALL, nullptr), - SyscallFailsWithErrno(EFAULT)); -} - -TEST(SemaphoreTest, SemCtlGetPid) { - AutoSem sem(semget(IPC_PRIVATE, 1, 0600 | IPC_CREAT)); - ASSERT_THAT(sem.get(), SyscallSucceeds()); - - ASSERT_THAT(semctl(sem.get(), 0, SETVAL, 1), SyscallSucceeds()); - EXPECT_THAT(semctl(sem.get(), 0, GETPID), SyscallSucceedsWithValue(getpid())); -} - -TEST(SemaphoreTest, SemCtlGetPidFork) { - AutoSem sem(semget(IPC_PRIVATE, 1, 0600 | IPC_CREAT)); - ASSERT_THAT(sem.get(), SyscallSucceeds()); - - const pid_t child_pid = fork(); - if (child_pid == 0) { - TEST_PCHECK(semctl(sem.get(), 0, SETVAL, 1) == 0); - TEST_PCHECK(semctl(sem.get(), 0, GETPID) == getpid()); - - _exit(0); - } - ASSERT_THAT(child_pid, SyscallSucceeds()); - - int status; - ASSERT_THAT(RetryEINTR(waitpid)(child_pid, &status, 0), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << " status " << status; -} - -TEST(SemaphoreTest, SemIpcSet) { - // Drop CAP_IPC_OWNER which allows us to bypass semaphore permissions. - ASSERT_NO_ERRNO(SetCapability(CAP_IPC_OWNER, false)); - - AutoSem sem(semget(IPC_PRIVATE, 1, 0600 | IPC_CREAT)); - ASSERT_THAT(sem.get(), SyscallSucceeds()); - - struct semid_ds semid = {}; - semid.sem_perm.uid = getuid(); - semid.sem_perm.gid = getgid(); - - // Make semaphore readonly and check that signal fails. - semid.sem_perm.mode = 0400; - EXPECT_THAT(semctl(sem.get(), 0, IPC_SET, &semid), SyscallSucceeds()); - struct sembuf buf = {}; - buf.sem_op = 1; - ASSERT_THAT(semop(sem.get(), &buf, 1), SyscallFailsWithErrno(EACCES)); - - // Make semaphore writeonly and check that wait for zero fails. - semid.sem_perm.mode = 0200; - EXPECT_THAT(semctl(sem.get(), 0, IPC_SET, &semid), SyscallSucceeds()); - buf.sem_op = 0; - ASSERT_THAT(semop(sem.get(), &buf, 1), SyscallFailsWithErrno(EACCES)); -} - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/sendfile.cc b/test/syscalls/linux/sendfile.cc deleted file mode 100644 index 580ab5193..000000000 --- a/test/syscalls/linux/sendfile.cc +++ /dev/null @@ -1,536 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <fcntl.h> -#include <sys/eventfd.h> -#include <sys/sendfile.h> -#include <unistd.h> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "absl/strings/string_view.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/util/eventfd_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -TEST(SendFileTest, SendZeroBytes) { - // Create temp files. - const TempPath in_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const TempPath out_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - - // Open the input file as read only. - const FileDescriptor inf = - ASSERT_NO_ERRNO_AND_VALUE(Open(in_file.path(), O_RDONLY)); - - // Open the output file as write only. - const FileDescriptor outf = - ASSERT_NO_ERRNO_AND_VALUE(Open(out_file.path(), O_WRONLY)); - - // Send data and verify that sendfile returns the correct value. - EXPECT_THAT(sendfile(outf.get(), inf.get(), nullptr, 0), - SyscallSucceedsWithValue(0)); -} - -TEST(SendFileTest, InvalidOffset) { - // Create temp files. - const TempPath in_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const TempPath out_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - - // Open the input file as read only. - const FileDescriptor inf = - ASSERT_NO_ERRNO_AND_VALUE(Open(in_file.path(), O_RDONLY)); - - // Open the output file as write only. - const FileDescriptor outf = - ASSERT_NO_ERRNO_AND_VALUE(Open(out_file.path(), O_WRONLY)); - - // Send data and verify that sendfile returns the correct value. - off_t offset = -1; - EXPECT_THAT(sendfile(outf.get(), inf.get(), &offset, 0), - SyscallFailsWithErrno(EINVAL)); -} - -TEST(SendFileTest, SendTrivially) { - // Create temp files. - constexpr char kData[] = "To be, or not to be, that is the question:"; - constexpr int kDataSize = sizeof(kData) - 1; - const TempPath in_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), kData, TempPath::kDefaultFileMode)); - const TempPath out_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - - // Open the input file as read only. - const FileDescriptor inf = - ASSERT_NO_ERRNO_AND_VALUE(Open(in_file.path(), O_RDONLY)); - - // Open the output file as write only. - FileDescriptor outf; - outf = ASSERT_NO_ERRNO_AND_VALUE(Open(out_file.path(), O_WRONLY)); - - // Send data and verify that sendfile returns the correct value. - int bytes_sent; - EXPECT_THAT(bytes_sent = sendfile(outf.get(), inf.get(), nullptr, kDataSize), - SyscallSucceedsWithValue(kDataSize)); - - // Close outf to avoid leak. - outf.reset(); - - // Open the output file as read only. - outf = ASSERT_NO_ERRNO_AND_VALUE(Open(out_file.path(), O_RDONLY)); - - // Verify that the output file has the correct data. - char actual[kDataSize]; - ASSERT_THAT(read(outf.get(), &actual, bytes_sent), - SyscallSucceedsWithValue(kDataSize)); - EXPECT_EQ(kData, absl::string_view(actual, bytes_sent)); -} - -TEST(SendFileTest, SendTriviallyWithBothFilesReadWrite) { - // Create temp files. - constexpr char kData[] = "Whether 'tis nobler in the mind to suffer"; - constexpr int kDataSize = sizeof(kData) - 1; - const TempPath in_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), kData, TempPath::kDefaultFileMode)); - const TempPath out_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - - // Open the input file as readwrite. - const FileDescriptor inf = - ASSERT_NO_ERRNO_AND_VALUE(Open(in_file.path(), O_RDWR)); - - // Open the output file as readwrite. - FileDescriptor outf; - outf = ASSERT_NO_ERRNO_AND_VALUE(Open(out_file.path(), O_RDWR)); - - // Send data and verify that sendfile returns the correct value. - int bytes_sent; - EXPECT_THAT(bytes_sent = sendfile(outf.get(), inf.get(), nullptr, kDataSize), - SyscallSucceedsWithValue(kDataSize)); - - // Close outf to avoid leak. - outf.reset(); - - // Open the output file as read only. - outf = ASSERT_NO_ERRNO_AND_VALUE(Open(out_file.path(), O_RDONLY)); - - // Verify that the output file has the correct data. - char actual[kDataSize]; - ASSERT_THAT(read(outf.get(), &actual, bytes_sent), - SyscallSucceedsWithValue(kDataSize)); - EXPECT_EQ(kData, absl::string_view(actual, bytes_sent)); -} - -TEST(SendFileTest, SendAndUpdateFileOffset) { - // Create temp files. - // Test input string length must be > 2 AND even. - constexpr char kData[] = "The slings and arrows of outrageous fortune,"; - constexpr int kDataSize = sizeof(kData) - 1; - constexpr int kHalfDataSize = kDataSize / 2; - const TempPath in_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), kData, TempPath::kDefaultFileMode)); - const TempPath out_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - - // Open the input file as read only. - const FileDescriptor inf = - ASSERT_NO_ERRNO_AND_VALUE(Open(in_file.path(), O_RDONLY)); - - // Open the output file as write only. - FileDescriptor outf; - outf = ASSERT_NO_ERRNO_AND_VALUE(Open(out_file.path(), O_WRONLY)); - - // Send data and verify that sendfile returns the correct value. - int bytes_sent; - EXPECT_THAT( - bytes_sent = sendfile(outf.get(), inf.get(), nullptr, kHalfDataSize), - SyscallSucceedsWithValue(kHalfDataSize)); - - // Close outf to avoid leak. - outf.reset(); - - // Open the output file as read only. - outf = ASSERT_NO_ERRNO_AND_VALUE(Open(out_file.path(), O_RDONLY)); - - // Verify that the output file has the correct data. - char actual[kHalfDataSize]; - ASSERT_THAT(read(outf.get(), &actual, bytes_sent), - SyscallSucceedsWithValue(kHalfDataSize)); - EXPECT_EQ(absl::string_view(kData, kHalfDataSize), - absl::string_view(actual, bytes_sent)); - - // Verify that the input file offset has been updated - ASSERT_THAT(read(inf.get(), &actual, kDataSize - bytes_sent), - SyscallSucceedsWithValue(kHalfDataSize)); - EXPECT_EQ( - absl::string_view(kData + kDataSize - bytes_sent, kDataSize - bytes_sent), - absl::string_view(actual, kHalfDataSize)); -} - -TEST(SendFileTest, SendAndUpdateFileOffsetFromNonzeroStartingPoint) { - // Create temp files. - // Test input string length must be > 2 AND divisible by 4. - constexpr char kData[] = "The slings and arrows of outrageous fortune,"; - constexpr int kDataSize = sizeof(kData) - 1; - constexpr int kHalfDataSize = kDataSize / 2; - constexpr int kQuarterDataSize = kHalfDataSize / 2; - const TempPath in_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), kData, TempPath::kDefaultFileMode)); - const TempPath out_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - - // Open the input file as read only. - const FileDescriptor inf = - ASSERT_NO_ERRNO_AND_VALUE(Open(in_file.path(), O_RDONLY)); - - // Open the output file as write only. - FileDescriptor outf; - outf = ASSERT_NO_ERRNO_AND_VALUE(Open(out_file.path(), O_WRONLY)); - - // Read a quarter of the data from the infile which should update the file - // offset, we don't actually care about the data so it goes into the garbage. - char garbage[kQuarterDataSize]; - ASSERT_THAT(read(inf.get(), &garbage, kQuarterDataSize), - SyscallSucceedsWithValue(kQuarterDataSize)); - - // Send data and verify that sendfile returns the correct value. - int bytes_sent; - EXPECT_THAT( - bytes_sent = sendfile(outf.get(), inf.get(), nullptr, kHalfDataSize), - SyscallSucceedsWithValue(kHalfDataSize)); - - // Close out_fd to avoid leak. - outf.reset(); - - // Open the output file as read only. - outf = ASSERT_NO_ERRNO_AND_VALUE(Open(out_file.path(), O_RDONLY)); - - // Verify that the output file has the correct data. - char actual[kHalfDataSize]; - ASSERT_THAT(read(outf.get(), &actual, bytes_sent), - SyscallSucceedsWithValue(kHalfDataSize)); - EXPECT_EQ(absl::string_view(kData + kQuarterDataSize, kHalfDataSize), - absl::string_view(actual, bytes_sent)); - - // Verify that the input file offset has been updated - ASSERT_THAT(read(inf.get(), &actual, kQuarterDataSize), - SyscallSucceedsWithValue(kQuarterDataSize)); - - EXPECT_EQ( - absl::string_view(kData + kDataSize - kQuarterDataSize, kQuarterDataSize), - absl::string_view(actual, kQuarterDataSize)); -} - -TEST(SendFileTest, SendAndUpdateGivenOffset) { - // Create temp files. - // Test input string length must be >= 4 AND divisible by 4. - constexpr char kData[] = "Or to take Arms against a Sea of troubles,"; - constexpr int kDataSize = sizeof(kData) + 1; - constexpr int kHalfDataSize = kDataSize / 2; - constexpr int kQuarterDataSize = kHalfDataSize / 2; - constexpr int kThreeFourthsDataSize = 3 * kDataSize / 4; - - const TempPath in_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), kData, TempPath::kDefaultFileMode)); - const TempPath out_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - - // Open the input file as read only. - const FileDescriptor inf = - ASSERT_NO_ERRNO_AND_VALUE(Open(in_file.path(), O_RDONLY)); - - // Open the output file as write only. - FileDescriptor outf; - outf = ASSERT_NO_ERRNO_AND_VALUE(Open(out_file.path(), O_WRONLY)); - - // Create offset for sending. - off_t offset = kQuarterDataSize; - - // Send data and verify that sendfile returns the correct value. - int bytes_sent; - EXPECT_THAT( - bytes_sent = sendfile(outf.get(), inf.get(), &offset, kHalfDataSize), - SyscallSucceedsWithValue(kHalfDataSize)); - - // Close out_fd to avoid leak. - outf.reset(); - - // Open the output file as read only. - outf = ASSERT_NO_ERRNO_AND_VALUE(Open(out_file.path(), O_RDONLY)); - - // Verify that the output file has the correct data. - char actual[kHalfDataSize]; - ASSERT_THAT(read(outf.get(), &actual, bytes_sent), - SyscallSucceedsWithValue(kHalfDataSize)); - EXPECT_EQ(absl::string_view(kData + kQuarterDataSize, kHalfDataSize), - absl::string_view(actual, bytes_sent)); - - // Verify that the input file offset has NOT been updated. - ASSERT_THAT(read(inf.get(), &actual, kHalfDataSize), - SyscallSucceedsWithValue(kHalfDataSize)); - EXPECT_EQ(absl::string_view(kData, kHalfDataSize), - absl::string_view(actual, kHalfDataSize)); - - // Verify that the offset pointer has been updated. - EXPECT_EQ(offset, kThreeFourthsDataSize); -} - -TEST(SendFileTest, DoNotSendfileIfOutfileIsAppendOnly) { - // Create temp files. - constexpr char kData[] = "And by opposing end them: to die, to sleep"; - constexpr int kDataSize = sizeof(kData) - 1; - - const TempPath in_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), kData, TempPath::kDefaultFileMode)); - const TempPath out_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - - // Open the input file as read only. - const FileDescriptor inf = - ASSERT_NO_ERRNO_AND_VALUE(Open(in_file.path(), O_RDONLY)); - - // Open the output file as append only. - const FileDescriptor outf = - ASSERT_NO_ERRNO_AND_VALUE(Open(out_file.path(), O_WRONLY | O_APPEND)); - - // Send data and verify that sendfile returns the correct errno. - EXPECT_THAT(sendfile(outf.get(), inf.get(), nullptr, kDataSize), - SyscallFailsWithErrno(EINVAL)); -} - -TEST(SendFileTest, AppendCheckOrdering) { - constexpr char kData[] = "And by opposing end them: to die, to sleep"; - constexpr int kDataSize = sizeof(kData) - 1; - const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), kData, TempPath::kDefaultFileMode)); - - const FileDescriptor read = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDONLY)); - const FileDescriptor write = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_WRONLY)); - const FileDescriptor append = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_APPEND)); - - // Check that read/write file mode is verified before append. - EXPECT_THAT(sendfile(append.get(), read.get(), nullptr, kDataSize), - SyscallFailsWithErrno(EBADF)); - EXPECT_THAT(sendfile(write.get(), write.get(), nullptr, kDataSize), - SyscallFailsWithErrno(EBADF)); -} - -TEST(SendFileTest, DoNotSendfileIfOutfileIsNotWritable) { - // Create temp files. - constexpr char kData[] = "No more; and by a sleep, to say we end"; - constexpr int kDataSize = sizeof(kData) - 1; - - const TempPath in_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), kData, TempPath::kDefaultFileMode)); - const TempPath out_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - - // Open the input file as read only. - const FileDescriptor inf = - ASSERT_NO_ERRNO_AND_VALUE(Open(in_file.path(), O_RDONLY)); - - // Open the output file as read only. - const FileDescriptor outf = - ASSERT_NO_ERRNO_AND_VALUE(Open(out_file.path(), O_RDONLY)); - - // Send data and verify that sendfile returns the correct errno. - EXPECT_THAT(sendfile(outf.get(), inf.get(), nullptr, kDataSize), - SyscallFailsWithErrno(EBADF)); -} - -TEST(SendFileTest, DoNotSendfileIfInfileIsNotReadable) { - // Create temp files. - constexpr char kData[] = "the heart-ache, and the thousand natural shocks"; - constexpr int kDataSize = sizeof(kData) - 1; - - const TempPath in_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), kData, TempPath::kDefaultFileMode)); - const TempPath out_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - - // Open the input file as write only. - const FileDescriptor inf = - ASSERT_NO_ERRNO_AND_VALUE(Open(in_file.path(), O_WRONLY)); - - // Open the output file as write only. - const FileDescriptor outf = - ASSERT_NO_ERRNO_AND_VALUE(Open(out_file.path(), O_WRONLY)); - - // Send data and verify that sendfile returns the correct errno. - EXPECT_THAT(sendfile(outf.get(), inf.get(), nullptr, kDataSize), - SyscallFailsWithErrno(EBADF)); -} - -TEST(SendFileTest, DoNotSendANegativeNumberOfBytes) { - // Create temp files. - constexpr char kData[] = "that Flesh is heir to? 'Tis a consummation"; - - const TempPath in_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), kData, TempPath::kDefaultFileMode)); - const TempPath out_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - - // Open the input file as read only. - const FileDescriptor inf = - ASSERT_NO_ERRNO_AND_VALUE(Open(in_file.path(), O_RDONLY)); - - // Open the output file as write only. - const FileDescriptor outf = - ASSERT_NO_ERRNO_AND_VALUE(Open(out_file.path(), O_WRONLY)); - - // Send data and verify that sendfile returns the correct errno. - EXPECT_THAT(sendfile(outf.get(), inf.get(), nullptr, -1), - SyscallFailsWithErrno(EINVAL)); -} - -TEST(SendFileTest, SendTheCorrectNumberOfBytesEvenIfWeTryToSendTooManyBytes) { - // Create temp files. - constexpr char kData[] = "devoutly to be wished. To die, to sleep,"; - constexpr int kDataSize = sizeof(kData) - 1; - - const TempPath in_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), kData, TempPath::kDefaultFileMode)); - const TempPath out_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - - // Open the input file as read only. - const FileDescriptor inf = - ASSERT_NO_ERRNO_AND_VALUE(Open(in_file.path(), O_RDONLY)); - - // Open the output file as write only. - FileDescriptor outf; - outf = ASSERT_NO_ERRNO_AND_VALUE(Open(out_file.path(), O_WRONLY)); - - // Send data and verify that sendfile returns the correct value. - int bytes_sent; - EXPECT_THAT( - bytes_sent = sendfile(outf.get(), inf.get(), nullptr, kDataSize + 100), - SyscallSucceedsWithValue(kDataSize)); - - // Close outf to avoid leak. - outf.reset(); - - // Open the output file as read only. - outf = ASSERT_NO_ERRNO_AND_VALUE(Open(out_file.path(), O_RDONLY)); - - // Verify that the output file has the correct data. - char actual[kDataSize]; - ASSERT_THAT(read(outf.get(), &actual, bytes_sent), - SyscallSucceedsWithValue(kDataSize)); - EXPECT_EQ(kData, absl::string_view(actual, bytes_sent)); -} - -TEST(SendFileTest, SendToNotARegularFile) { - // Make temp input directory and open as read only. - const TempPath dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const FileDescriptor inf = - ASSERT_NO_ERRNO_AND_VALUE(Open(dir.path(), O_RDONLY)); - - // Make temp output file and open as write only. - const TempPath out_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const FileDescriptor outf = - ASSERT_NO_ERRNO_AND_VALUE(Open(out_file.path(), O_WRONLY)); - - // Receive an error since a directory is not a regular file. - EXPECT_THAT(sendfile(outf.get(), inf.get(), nullptr, 0), - SyscallFailsWithErrno(EINVAL)); -} - -TEST(SendFileTest, SendPipeWouldBlock) { - // Create temp file. - constexpr char kData[] = - "The fool doth think he is wise, but the wise man knows himself to be a " - "fool."; - constexpr int kDataSize = sizeof(kData) - 1; - const TempPath in_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), kData, TempPath::kDefaultFileMode)); - - // Open the input file as read only. - const FileDescriptor inf = - ASSERT_NO_ERRNO_AND_VALUE(Open(in_file.path(), O_RDONLY)); - - // Setup the output named pipe. - int fds[2]; - ASSERT_THAT(pipe2(fds, O_NONBLOCK), SyscallSucceeds()); - const FileDescriptor rfd(fds[0]); - const FileDescriptor wfd(fds[1]); - - // Fill up the pipe's buffer. - int pipe_size = -1; - ASSERT_THAT(pipe_size = fcntl(wfd.get(), F_GETPIPE_SZ), SyscallSucceeds()); - std::vector<char> buf(2 * pipe_size); - ASSERT_THAT(write(wfd.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(pipe_size)); - - EXPECT_THAT(sendfile(wfd.get(), inf.get(), nullptr, kDataSize), - SyscallFailsWithErrno(EWOULDBLOCK)); -} - -TEST(SendFileTest, SendPipeBlocks) { - // Create temp file. - constexpr char kData[] = - "The fault, dear Brutus, is not in our stars, but in ourselves."; - constexpr int kDataSize = sizeof(kData) - 1; - const TempPath in_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), kData, TempPath::kDefaultFileMode)); - - // Open the input file as read only. - const FileDescriptor inf = - ASSERT_NO_ERRNO_AND_VALUE(Open(in_file.path(), O_RDONLY)); - - // Setup the output named pipe. - int fds[2]; - ASSERT_THAT(pipe(fds), SyscallSucceeds()); - const FileDescriptor rfd(fds[0]); - const FileDescriptor wfd(fds[1]); - - // Fill up the pipe's buffer. - int pipe_size = -1; - ASSERT_THAT(pipe_size = fcntl(wfd.get(), F_GETPIPE_SZ), SyscallSucceeds()); - std::vector<char> buf(pipe_size); - ASSERT_THAT(write(wfd.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(pipe_size)); - - ScopedThread t([&]() { - absl::SleepFor(absl::Milliseconds(100)); - ASSERT_THAT(read(rfd.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(pipe_size)); - }); - - EXPECT_THAT(sendfile(wfd.get(), inf.get(), nullptr, kDataSize), - SyscallSucceedsWithValue(kDataSize)); -} - -TEST(SendFileTest, SendToSpecialFile) { - // Create temp file. - const TempPath in_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), "", TempPath::kDefaultFileMode)); - - const FileDescriptor inf = - ASSERT_NO_ERRNO_AND_VALUE(Open(in_file.path(), O_RDWR)); - constexpr int kSize = 0x7ff; - ASSERT_THAT(ftruncate(inf.get(), kSize), SyscallSucceeds()); - - auto eventfd = ASSERT_NO_ERRNO_AND_VALUE(NewEventFD()); - - // eventfd can accept a number of bytes which is a multiple of 8. - EXPECT_THAT(sendfile(eventfd.get(), inf.get(), nullptr, 0xfffff), - SyscallSucceedsWithValue(kSize & (~7))); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/sendfile_socket.cc b/test/syscalls/linux/sendfile_socket.cc deleted file mode 100644 index 8f7ee4163..000000000 --- a/test/syscalls/linux/sendfile_socket.cc +++ /dev/null @@ -1,242 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <arpa/inet.h> -#include <netinet/in.h> -#include <sys/sendfile.h> -#include <sys/socket.h> -#include <unistd.h> - -#include <iostream> -#include <vector> - -#include "gtest/gtest.h" -#include "absl/strings/string_view.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { -namespace { - -class SendFileTest : public ::testing::TestWithParam<int> { - protected: - PosixErrorOr<std::tuple<int, int>> Sockets() { - // Bind a server socket. - int family = GetParam(); - struct sockaddr server_addr = {}; - switch (family) { - case AF_INET: { - struct sockaddr_in* server_addr_in = - reinterpret_cast<struct sockaddr_in*>(&server_addr); - server_addr_in->sin_family = family; - server_addr_in->sin_addr.s_addr = INADDR_ANY; - break; - } - case AF_UNIX: { - struct sockaddr_un* server_addr_un = - reinterpret_cast<struct sockaddr_un*>(&server_addr); - server_addr_un->sun_family = family; - server_addr_un->sun_path[0] = '\0'; - break; - } - default: - return PosixError(EINVAL); - } - int server = socket(family, SOCK_STREAM, 0); - if (bind(server, &server_addr, sizeof(server_addr)) < 0) { - return PosixError(errno); - } - if (listen(server, 1) < 0) { - close(server); - return PosixError(errno); - } - - // Fetch the address; both are anonymous. - socklen_t length = sizeof(server_addr); - if (getsockname(server, &server_addr, &length) < 0) { - close(server); - return PosixError(errno); - } - - // Connect the client. - int client = socket(family, SOCK_STREAM, 0); - if (connect(client, &server_addr, length) < 0) { - close(server); - close(client); - return PosixError(errno); - } - - // Accept on the server. - int server_client = accept(server, nullptr, 0); - if (server_client < 0) { - close(server); - close(client); - return PosixError(errno); - } - close(server); - return std::make_tuple(client, server_client); - } -}; - -// Sends large file to exercise the path that read and writes data multiple -// times, esp. when more data is read than can be written. -TEST_P(SendFileTest, SendMultiple) { - std::vector<char> data(5 * 1024 * 1024); - RandomizeBuffer(data.data(), data.size()); - - // Create temp files. - const TempPath in_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), absl::string_view(data.data(), data.size()), - TempPath::kDefaultFileMode)); - const TempPath out_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - - // Create sockets. - std::tuple<int, int> fds = ASSERT_NO_ERRNO_AND_VALUE(Sockets()); - const FileDescriptor server(std::get<0>(fds)); - FileDescriptor client(std::get<1>(fds)); // non-const, reset is used. - - // Thread that reads data from socket and dumps to a file. - ScopedThread th([&] { - FileDescriptor outf = - ASSERT_NO_ERRNO_AND_VALUE(Open(out_file.path(), O_WRONLY)); - - // Read until socket is closed. - char buf[10240]; - for (int cnt = 0;; cnt++) { - int r = RetryEINTR(read)(server.get(), buf, sizeof(buf)); - // We cannot afford to save on every read() call. - if (cnt % 1000 == 0) { - ASSERT_THAT(r, SyscallSucceeds()); - } else { - const DisableSave ds; - ASSERT_THAT(r, SyscallSucceeds()); - } - if (r == 0) { - // EOF - break; - } - int w = RetryEINTR(write)(outf.get(), buf, r); - // We cannot afford to save on every write() call. - if (cnt % 1010 == 0) { - ASSERT_THAT(w, SyscallSucceedsWithValue(r)); - } else { - const DisableSave ds; - ASSERT_THAT(w, SyscallSucceedsWithValue(r)); - } - } - }); - - // Open the input file as read only. - const FileDescriptor inf = - ASSERT_NO_ERRNO_AND_VALUE(Open(in_file.path(), O_RDONLY)); - - int cnt = 0; - for (size_t sent = 0; sent < data.size(); cnt++) { - const size_t remain = data.size() - sent; - std::cout << "sendfile, size=" << data.size() << ", sent=" << sent - << ", remain=" << remain; - - // Send data and verify that sendfile returns the correct value. - int res = sendfile(client.get(), inf.get(), nullptr, remain); - // We cannot afford to save on every sendfile() call. - if (cnt % 120 == 0) { - MaybeSave(); - } - if (res == 0) { - // EOF - break; - } - if (res > 0) { - sent += res; - } else { - ASSERT_TRUE(errno == EINTR || errno == EAGAIN) << "errno=" << errno; - } - } - - // Close socket to stop thread. - client.reset(); - th.Join(); - - // Verify that the output file has the correct data. - const FileDescriptor outf = - ASSERT_NO_ERRNO_AND_VALUE(Open(out_file.path(), O_RDONLY)); - std::vector<char> actual(data.size(), '\0'); - ASSERT_THAT(RetryEINTR(read)(outf.get(), actual.data(), actual.size()), - SyscallSucceedsWithValue(actual.size())); - ASSERT_EQ(memcmp(data.data(), actual.data(), data.size()), 0); -} - -TEST_P(SendFileTest, Shutdown) { - // Create a socket. - std::tuple<int, int> fds = ASSERT_NO_ERRNO_AND_VALUE(Sockets()); - const FileDescriptor client(std::get<0>(fds)); - FileDescriptor server(std::get<1>(fds)); // non-const, reset below. - - // If this is a TCP socket, then turn off linger. - if (GetParam() == AF_INET) { - struct linger sl; - sl.l_onoff = 1; - sl.l_linger = 0; - ASSERT_THAT( - setsockopt(server.get(), SOL_SOCKET, SO_LINGER, &sl, sizeof(sl)), - SyscallSucceeds()); - } - - // Create a 1m file with random data. - std::vector<char> data(1024 * 1024); - RandomizeBuffer(data.data(), data.size()); - const TempPath in_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), absl::string_view(data.data(), data.size()), - TempPath::kDefaultFileMode)); - const FileDescriptor inf = - ASSERT_NO_ERRNO_AND_VALUE(Open(in_file.path(), O_RDONLY)); - - // Read some data, then shutdown the socket. We don't actually care about - // checking the contents (other tests do that), so we just re-use the same - // buffer as above. - ScopedThread t([&]() { - size_t done = 0; - while (done < data.size()) { - int n = RetryEINTR(read)(server.get(), data.data(), data.size()); - ASSERT_THAT(n, SyscallSucceeds()); - done += n; - } - // Close the server side socket. - server.reset(); - }); - - // Continuously stream from the file to the socket. Note we do not assert - // that a specific amount of data has been written at any time, just that some - // data is written. Eventually, we should get a connection reset error. - while (1) { - off_t offset = 0; // Always read from the start. - int n = sendfile(client.get(), inf.get(), &offset, data.size()); - EXPECT_THAT(n, AnyOf(SyscallFailsWithErrno(ECONNRESET), - SyscallFailsWithErrno(EPIPE), SyscallSucceeds())); - if (n <= 0) { - break; - } - } -} - -INSTANTIATE_TEST_SUITE_P(AddressFamily, SendFileTest, - ::testing::Values(AF_UNIX, AF_INET)); - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/shm.cc b/test/syscalls/linux/shm.cc deleted file mode 100644 index c7fdbb924..000000000 --- a/test/syscalls/linux/shm.cc +++ /dev/null @@ -1,508 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <stdio.h> -#include <sys/ipc.h> -#include <sys/mman.h> -#include <sys/shm.h> -#include <sys/types.h> - -#include "absl/time/clock.h" -#include "test/util/multiprocess_util.h" -#include "test/util/posix_error.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -using ::testing::_; - -const uint64_t kAllocSize = kPageSize * 128ULL; - -PosixErrorOr<char*> Shmat(int shmid, const void* shmaddr, int shmflg) { - const intptr_t addr = - reinterpret_cast<intptr_t>(shmat(shmid, shmaddr, shmflg)); - if (addr == -1) { - return PosixError(errno, "shmat() failed"); - } - return reinterpret_cast<char*>(addr); -} - -PosixError Shmdt(const char* shmaddr) { - const int ret = shmdt(shmaddr); - if (ret == -1) { - return PosixError(errno, "shmdt() failed"); - } - return NoError(); -} - -template <typename T> -PosixErrorOr<int> Shmctl(int shmid, int cmd, T* buf) { - int ret = shmctl(shmid, cmd, reinterpret_cast<struct shmid_ds*>(buf)); - if (ret == -1) { - return PosixError(errno, "shmctl() failed"); - } - return ret; -} - -// ShmSegment is a RAII object for automatically cleaning up shm segments. -class ShmSegment { - public: - explicit ShmSegment(int id) : id_(id) {} - - ~ShmSegment() { - if (id_ >= 0) { - EXPECT_NO_ERRNO(Rmid()); - id_ = -1; - } - } - - ShmSegment(ShmSegment&& other) : id_(other.release()) {} - - ShmSegment& operator=(ShmSegment&& other) { - id_ = other.release(); - return *this; - } - - ShmSegment(ShmSegment const& other) = delete; - ShmSegment& operator=(ShmSegment const& other) = delete; - - int id() const { return id_; } - - int release() { - int id = id_; - id_ = -1; - return id; - } - - PosixErrorOr<int> Rmid() { - RETURN_IF_ERRNO(Shmctl<void>(id_, IPC_RMID, nullptr)); - return release(); - } - - private: - int id_ = -1; -}; - -PosixErrorOr<int> ShmgetRaw(key_t key, size_t size, int shmflg) { - int id = shmget(key, size, shmflg); - if (id == -1) { - return PosixError(errno, "shmget() failed"); - } - return id; -} - -PosixErrorOr<ShmSegment> Shmget(key_t key, size_t size, int shmflg) { - ASSIGN_OR_RETURN_ERRNO(int id, ShmgetRaw(key, size, shmflg)); - return ShmSegment(id); -} - -TEST(ShmTest, AttachDetach) { - const ShmSegment shm = ASSERT_NO_ERRNO_AND_VALUE( - Shmget(IPC_PRIVATE, kAllocSize, IPC_CREAT | 0777)); - struct shmid_ds attr; - ASSERT_NO_ERRNO(Shmctl(shm.id(), IPC_STAT, &attr)); - EXPECT_EQ(attr.shm_segsz, kAllocSize); - EXPECT_EQ(attr.shm_nattch, 0); - - const char* addr = ASSERT_NO_ERRNO_AND_VALUE(Shmat(shm.id(), nullptr, 0)); - ASSERT_NO_ERRNO(Shmctl(shm.id(), IPC_STAT, &attr)); - EXPECT_EQ(attr.shm_nattch, 1); - - const char* addr2 = ASSERT_NO_ERRNO_AND_VALUE(Shmat(shm.id(), nullptr, 0)); - ASSERT_NO_ERRNO(Shmctl(shm.id(), IPC_STAT, &attr)); - EXPECT_EQ(attr.shm_nattch, 2); - - ASSERT_NO_ERRNO(Shmdt(addr)); - ASSERT_NO_ERRNO(Shmctl(shm.id(), IPC_STAT, &attr)); - EXPECT_EQ(attr.shm_nattch, 1); - - ASSERT_NO_ERRNO(Shmdt(addr2)); - ASSERT_NO_ERRNO(Shmctl(shm.id(), IPC_STAT, &attr)); - EXPECT_EQ(attr.shm_nattch, 0); -} - -TEST(ShmTest, LookupByKey) { - const TempPath keyfile = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const key_t key = ftok(keyfile.path().c_str(), 1); - const ShmSegment shm = - ASSERT_NO_ERRNO_AND_VALUE(Shmget(key, kAllocSize, IPC_CREAT | 0777)); - const int id2 = ASSERT_NO_ERRNO_AND_VALUE(ShmgetRaw(key, kAllocSize, 0777)); - EXPECT_EQ(shm.id(), id2); -} - -TEST(ShmTest, DetachedSegmentsPersist) { - const ShmSegment shm = ASSERT_NO_ERRNO_AND_VALUE( - Shmget(IPC_PRIVATE, kAllocSize, IPC_CREAT | 0777)); - char* addr = ASSERT_NO_ERRNO_AND_VALUE(Shmat(shm.id(), nullptr, 0)); - addr[0] = 'x'; - ASSERT_NO_ERRNO(Shmdt(addr)); - - // We should be able to re-attach to the same segment and get our data back. - addr = ASSERT_NO_ERRNO_AND_VALUE(Shmat(shm.id(), nullptr, 0)); - EXPECT_EQ(addr[0], 'x'); - ASSERT_NO_ERRNO(Shmdt(addr)); -} - -TEST(ShmTest, MultipleDetachFails) { - const ShmSegment shm = ASSERT_NO_ERRNO_AND_VALUE( - Shmget(IPC_PRIVATE, kAllocSize, IPC_CREAT | 0777)); - const char* addr = ASSERT_NO_ERRNO_AND_VALUE(Shmat(shm.id(), nullptr, 0)); - ASSERT_NO_ERRNO(Shmdt(addr)); - EXPECT_THAT(Shmdt(addr), PosixErrorIs(EINVAL, _)); -} - -TEST(ShmTest, IpcStat) { - const TempPath keyfile = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const key_t key = ftok(keyfile.path().c_str(), 1); - - const time_t start = time(nullptr); - - const ShmSegment shm = - ASSERT_NO_ERRNO_AND_VALUE(Shmget(key, kAllocSize, IPC_CREAT | 0777)); - - const uid_t uid = getuid(); - const gid_t gid = getgid(); - const pid_t pid = getpid(); - - struct shmid_ds attr; - ASSERT_NO_ERRNO(Shmctl(shm.id(), IPC_STAT, &attr)); - - EXPECT_EQ(attr.shm_perm.__key, key); - EXPECT_EQ(attr.shm_perm.uid, uid); - EXPECT_EQ(attr.shm_perm.gid, gid); - EXPECT_EQ(attr.shm_perm.cuid, uid); - EXPECT_EQ(attr.shm_perm.cgid, gid); - EXPECT_EQ(attr.shm_perm.mode, 0777); - - EXPECT_EQ(attr.shm_segsz, kAllocSize); - - EXPECT_EQ(attr.shm_atime, 0); - EXPECT_EQ(attr.shm_dtime, 0); - - // Change time is set on creation. - EXPECT_GE(attr.shm_ctime, start); - - EXPECT_EQ(attr.shm_cpid, pid); - EXPECT_EQ(attr.shm_lpid, 0); - - EXPECT_EQ(attr.shm_nattch, 0); - - // The timestamps only have a resolution of seconds; slow down so we actually - // see the timestamps change. - absl::SleepFor(absl::Seconds(1)); - const time_t pre_attach = time(nullptr); - - const char* addr = ASSERT_NO_ERRNO_AND_VALUE(Shmat(shm.id(), nullptr, 0)); - ASSERT_NO_ERRNO(Shmctl(shm.id(), IPC_STAT, &attr)); - - EXPECT_GE(attr.shm_atime, pre_attach); - EXPECT_EQ(attr.shm_dtime, 0); - EXPECT_LT(attr.shm_ctime, pre_attach); - EXPECT_EQ(attr.shm_lpid, pid); - EXPECT_EQ(attr.shm_nattch, 1); - - absl::SleepFor(absl::Seconds(1)); - const time_t pre_detach = time(nullptr); - - ASSERT_NO_ERRNO(Shmdt(addr)); - ASSERT_NO_ERRNO(Shmctl(shm.id(), IPC_STAT, &attr)); - - EXPECT_LT(attr.shm_atime, pre_detach); - EXPECT_GE(attr.shm_dtime, pre_detach); - EXPECT_LT(attr.shm_ctime, pre_detach); - EXPECT_EQ(attr.shm_lpid, pid); - EXPECT_EQ(attr.shm_nattch, 0); -} - -TEST(ShmTest, ShmStat) { - // This test relies on the segment we create to be the first one on the - // system, causing it to occupy slot 1. We can't reasonably expect this on a - // general Linux host. - SKIP_IF(!IsRunningOnGvisor()); - - const ShmSegment shm = ASSERT_NO_ERRNO_AND_VALUE( - Shmget(IPC_PRIVATE, kAllocSize, IPC_CREAT | 0777)); - struct shmid_ds attr; - ASSERT_NO_ERRNO(Shmctl(1, SHM_STAT, &attr)); - // This does the same thing as IPC_STAT, so only test that the syscall - // succeeds here. -} - -TEST(ShmTest, IpcInfo) { - struct shminfo info; - ASSERT_NO_ERRNO(Shmctl(0, IPC_INFO, &info)); - - EXPECT_EQ(info.shmmin, 1); // This is always 1, according to the man page. - EXPECT_GT(info.shmmax, info.shmmin); - EXPECT_GT(info.shmmni, 0); - EXPECT_GT(info.shmseg, 0); - EXPECT_GT(info.shmall, 0); -} - -TEST(ShmTest, ShmInfo) { - struct shm_info info; - - // We generally can't know what other processes on a linux machine - // does with shared memory segments, so we can't test specific - // numbers on Linux. When running under gvisor, we're guaranteed to - // be the only ones using shm, so we can easily verify machine-wide - // numbers. - if (IsRunningOnGvisor()) { - ASSERT_NO_ERRNO(Shmctl(0, SHM_INFO, &info)); - EXPECT_EQ(info.used_ids, 0); - EXPECT_EQ(info.shm_tot, 0); - EXPECT_EQ(info.shm_rss, 0); - EXPECT_EQ(info.shm_swp, 0); - } - - const ShmSegment shm = ASSERT_NO_ERRNO_AND_VALUE( - Shmget(IPC_PRIVATE, kAllocSize, IPC_CREAT | 0777)); - const char* addr = ASSERT_NO_ERRNO_AND_VALUE(Shmat(shm.id(), nullptr, 0)); - - ASSERT_NO_ERRNO(Shmctl(1, SHM_INFO, &info)); - - if (IsRunningOnGvisor()) { - ASSERT_NO_ERRNO(Shmctl(shm.id(), SHM_INFO, &info)); - EXPECT_EQ(info.used_ids, 1); - EXPECT_EQ(info.shm_tot, kAllocSize / kPageSize); - EXPECT_EQ(info.shm_rss, kAllocSize / kPageSize); - EXPECT_EQ(info.shm_swp, 0); // Gvisor currently never swaps. - } - - ASSERT_NO_ERRNO(Shmdt(addr)); -} - -TEST(ShmTest, ShmCtlSet) { - const ShmSegment shm = ASSERT_NO_ERRNO_AND_VALUE( - Shmget(IPC_PRIVATE, kAllocSize, IPC_CREAT | 0777)); - const char* addr = ASSERT_NO_ERRNO_AND_VALUE(Shmat(shm.id(), nullptr, 0)); - - struct shmid_ds attr; - ASSERT_NO_ERRNO(Shmctl(shm.id(), IPC_STAT, &attr)); - ASSERT_EQ(attr.shm_perm.mode, 0777); - - attr.shm_perm.mode = 0766; - ASSERT_NO_ERRNO(Shmctl(shm.id(), IPC_SET, &attr)); - - ASSERT_NO_ERRNO(Shmctl(shm.id(), IPC_STAT, &attr)); - ASSERT_EQ(attr.shm_perm.mode, 0766); - - ASSERT_NO_ERRNO(Shmdt(addr)); -} - -TEST(ShmTest, RemovedSegmentsAreMarkedDeleted) { - ShmSegment shm = ASSERT_NO_ERRNO_AND_VALUE( - Shmget(IPC_PRIVATE, kAllocSize, IPC_CREAT | 0777)); - const char* addr = ASSERT_NO_ERRNO_AND_VALUE(Shmat(shm.id(), nullptr, 0)); - const int id = ASSERT_NO_ERRNO_AND_VALUE(shm.Rmid()); - struct shmid_ds attr; - ASSERT_NO_ERRNO(Shmctl(id, IPC_STAT, &attr)); - EXPECT_NE(attr.shm_perm.mode & SHM_DEST, 0); - ASSERT_NO_ERRNO(Shmdt(addr)); -} - -TEST(ShmTest, RemovedSegmentsAreDestroyed) { - ShmSegment shm = ASSERT_NO_ERRNO_AND_VALUE( - Shmget(IPC_PRIVATE, kAllocSize, IPC_CREAT | 0777)); - const char* addr = ASSERT_NO_ERRNO_AND_VALUE(Shmat(shm.id(), nullptr, 0)); - - const uint64_t alloc_pages = kAllocSize / kPageSize; - - struct shm_info info; - ASSERT_NO_ERRNO(Shmctl(0 /*ignored*/, SHM_INFO, &info)); - const uint64_t before = info.shm_tot; - - ASSERT_NO_ERRNO(shm.Rmid()); - ASSERT_NO_ERRNO(Shmdt(addr)); - - ASSERT_NO_ERRNO(Shmctl(0 /*ignored*/, SHM_INFO, &info)); - if (IsRunningOnGvisor()) { - // No guarantees on system-wide shm memory usage on a generic linux host. - const uint64_t after = info.shm_tot; - EXPECT_EQ(after, before - alloc_pages); - } -} - -TEST(ShmTest, AllowsAttachToRemovedSegmentWithRefs) { - ShmSegment shm = ASSERT_NO_ERRNO_AND_VALUE( - Shmget(IPC_PRIVATE, kAllocSize, IPC_CREAT | 0777)); - const char* addr = ASSERT_NO_ERRNO_AND_VALUE(Shmat(shm.id(), nullptr, 0)); - const int id = ASSERT_NO_ERRNO_AND_VALUE(shm.Rmid()); - const char* addr2 = ASSERT_NO_ERRNO_AND_VALUE(Shmat(id, nullptr, 0)); - ASSERT_NO_ERRNO(Shmdt(addr)); - ASSERT_NO_ERRNO(Shmdt(addr2)); -} - -TEST(ShmTest, RemovedSegmentsAreNotDiscoverable) { - const TempPath keyfile = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const key_t key = ftok(keyfile.path().c_str(), 1); - ShmSegment shm = - ASSERT_NO_ERRNO_AND_VALUE(Shmget(key, kAllocSize, IPC_CREAT | 0777)); - ASSERT_NO_ERRNO(shm.Rmid()); - EXPECT_THAT(Shmget(key, kAllocSize, 0777), PosixErrorIs(ENOENT, _)); -} - -TEST(ShmDeathTest, ReadonlySegment) { - SetupGvisorDeathTest(); - const ShmSegment shm = ASSERT_NO_ERRNO_AND_VALUE( - Shmget(IPC_PRIVATE, kAllocSize, IPC_CREAT | 0777)); - char* addr = ASSERT_NO_ERRNO_AND_VALUE(Shmat(shm.id(), nullptr, SHM_RDONLY)); - // Reading succeeds. - static_cast<void>(addr[0]); - // Writing fails. - EXPECT_EXIT(addr[0] = 'x', ::testing::KilledBySignal(SIGSEGV), ""); -} - -TEST(ShmDeathTest, SegmentNotAccessibleAfterDetach) { - // This test is susceptible to races with concurrent mmaps running in parallel - // gtest threads since the test relies on the address freed during a shm - // segment destruction to remain unused. We run the test body in a forked - // child to guarantee a single-threaded context to avoid this. - - SetupGvisorDeathTest(); - - const auto rest = [&] { - ShmSegment shm = ASSERT_NO_ERRNO_AND_VALUE( - Shmget(IPC_PRIVATE, kAllocSize, IPC_CREAT | 0777)); - char* addr = ASSERT_NO_ERRNO_AND_VALUE(Shmat(shm.id(), nullptr, 0)); - - // Mark the segment as destroyed so it's automatically cleaned up when we - // crash below. We can't rely on the standard cleanup since the destructor - // will not run after the SIGSEGV. Note that this doesn't destroy the - // segment immediately since we're still attached to it. - ASSERT_NO_ERRNO(shm.Rmid()); - - addr[0] = 'x'; - ASSERT_NO_ERRNO(Shmdt(addr)); - - // This access should cause a SIGSEGV. - addr[0] = 'x'; - }; - - EXPECT_THAT(InForkedProcess(rest), - IsPosixErrorOkAndHolds(W_EXITCODE(0, SIGSEGV))); -} - -TEST(ShmTest, RequestingSegmentSmallerThanSHMMINFails) { - struct shminfo info; - ASSERT_NO_ERRNO(Shmctl(0, IPC_INFO, &info)); - const uint64_t size = info.shmmin - 1; - EXPECT_THAT(Shmget(IPC_PRIVATE, size, IPC_CREAT | 0777), - PosixErrorIs(EINVAL, _)); -} - -TEST(ShmTest, RequestingSegmentLargerThanSHMMAXFails) { - struct shminfo info; - ASSERT_NO_ERRNO(Shmctl(0, IPC_INFO, &info)); - const uint64_t size = info.shmmax + kPageSize; - EXPECT_THAT(Shmget(IPC_PRIVATE, size, IPC_CREAT | 0777), - PosixErrorIs(EINVAL, _)); -} - -TEST(ShmTest, RequestingUnalignedSizeSucceeds) { - EXPECT_NO_ERRNO(Shmget(IPC_PRIVATE, 4097, IPC_CREAT | 0777)); -} - -TEST(ShmTest, RequestingDuplicateCreationFails) { - const TempPath keyfile = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const key_t key = ftok(keyfile.path().c_str(), 1); - const ShmSegment shm = ASSERT_NO_ERRNO_AND_VALUE( - Shmget(key, kAllocSize, IPC_CREAT | IPC_EXCL | 0777)); - EXPECT_THAT(Shmget(key, kAllocSize, IPC_CREAT | IPC_EXCL | 0777), - PosixErrorIs(EEXIST, _)); -} - -TEST(ShmTest, NonExistentSegmentsAreNotFound) { - const TempPath keyfile = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const key_t key = ftok(keyfile.path().c_str(), 1); - // Do not request creation. - EXPECT_THAT(Shmget(key, kAllocSize, 0777), PosixErrorIs(ENOENT, _)); -} - -TEST(ShmTest, SegmentsSizeFixedOnCreation) { - const TempPath keyfile = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const key_t key = ftok(keyfile.path().c_str(), 1); - - // Base segment. - const ShmSegment shm = - ASSERT_NO_ERRNO_AND_VALUE(Shmget(key, kAllocSize, IPC_CREAT | 0777)); - - // Ask for the same segment at half size. This succeeds. - const int id2 = - ASSERT_NO_ERRNO_AND_VALUE(ShmgetRaw(key, kAllocSize / 2, 0777)); - - // Ask for the same segment at double size. - EXPECT_THAT(Shmget(key, kAllocSize * 2, 0777), PosixErrorIs(EINVAL, _)); - - char* addr = ASSERT_NO_ERRNO_AND_VALUE(Shmat(shm.id(), nullptr, 0)); - char* addr2 = ASSERT_NO_ERRNO_AND_VALUE(Shmat(id2, nullptr, 0)); - - // We have 2 different maps... - EXPECT_NE(addr, addr2); - - // ... And both maps are kAllocSize bytes; despite asking for a half-sized - // segment for the second map. - addr[kAllocSize - 1] = 'x'; - addr2[kAllocSize - 1] = 'x'; - - ASSERT_NO_ERRNO(Shmdt(addr)); - ASSERT_NO_ERRNO(Shmdt(addr2)); -} - -TEST(ShmTest, PartialUnmap) { - const ShmSegment shm = ASSERT_NO_ERRNO_AND_VALUE( - Shmget(IPC_PRIVATE, kAllocSize, IPC_CREAT | 0777)); - char* addr = ASSERT_NO_ERRNO_AND_VALUE(Shmat(shm.id(), nullptr, 0)); - EXPECT_THAT(munmap(addr + (kAllocSize / 4), kAllocSize / 2), - SyscallSucceeds()); - ASSERT_NO_ERRNO(Shmdt(addr)); -} - -// Check that sentry does not panic when asked for a zero-length private shm -// segment. Regression test for b/110694797. -TEST(ShmTest, GracefullyFailOnZeroLenSegmentCreation) { - EXPECT_THAT(Shmget(IPC_PRIVATE, 0, 0), PosixErrorIs(EINVAL, _)); -} - -TEST(ShmTest, NoDestructionOfAttachedSegmentWithMultipleRmid) { - ShmSegment shm = ASSERT_NO_ERRNO_AND_VALUE( - Shmget(IPC_PRIVATE, kAllocSize, IPC_CREAT | 0777)); - char* addr = ASSERT_NO_ERRNO_AND_VALUE(Shmat(shm.id(), nullptr, 0)); - char* addr2 = ASSERT_NO_ERRNO_AND_VALUE(Shmat(shm.id(), nullptr, 0)); - - // There should be 2 refs to the segment from the 2 attachments, and a single - // self-reference. Mark the segment as destroyed more than 3 times through - // shmctl(RMID). If there's a bug with the ref counting, this should cause the - // count to drop to zero. - int id = shm.release(); - for (int i = 0; i < 6; ++i) { - ASSERT_NO_ERRNO(Shmctl<void>(id, IPC_RMID, nullptr)); - } - - // Segment should remain accessible. - addr[0] = 'x'; - ASSERT_NO_ERRNO(Shmdt(addr)); - - // Segment should remain accessible even after one of the two attachments are - // detached. - addr2[0] = 'x'; - ASSERT_NO_ERRNO(Shmdt(addr2)); -} - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/sigaction.cc b/test/syscalls/linux/sigaction.cc deleted file mode 100644 index 9d9dd57a8..000000000 --- a/test/syscalls/linux/sigaction.cc +++ /dev/null @@ -1,79 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <signal.h> -#include <sys/syscall.h> - -#include "gtest/gtest.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -TEST(SigactionTest, GetLessThanOrEqualToZeroFails) { - struct sigaction act = {}; - ASSERT_THAT(sigaction(-1, nullptr, &act), SyscallFailsWithErrno(EINVAL)); - ASSERT_THAT(sigaction(0, nullptr, &act), SyscallFailsWithErrno(EINVAL)); -} - -TEST(SigactionTest, SetLessThanOrEqualToZeroFails) { - struct sigaction act = {}; - ASSERT_THAT(sigaction(0, &act, nullptr), SyscallFailsWithErrno(EINVAL)); - ASSERT_THAT(sigaction(0, &act, nullptr), SyscallFailsWithErrno(EINVAL)); -} - -TEST(SigactionTest, GetGreaterThanMaxFails) { - struct sigaction act = {}; - ASSERT_THAT(sigaction(SIGRTMAX + 1, nullptr, &act), - SyscallFailsWithErrno(EINVAL)); -} - -TEST(SigactionTest, SetGreaterThanMaxFails) { - struct sigaction act = {}; - ASSERT_THAT(sigaction(SIGRTMAX + 1, &act, nullptr), - SyscallFailsWithErrno(EINVAL)); -} - -TEST(SigactionTest, SetSigkillFails) { - struct sigaction act = {}; - ASSERT_THAT(sigaction(SIGKILL, nullptr, &act), SyscallSucceeds()); - ASSERT_THAT(sigaction(SIGKILL, &act, nullptr), SyscallFailsWithErrno(EINVAL)); -} - -TEST(SigactionTest, SetSigstopFails) { - struct sigaction act = {}; - ASSERT_THAT(sigaction(SIGSTOP, nullptr, &act), SyscallSucceeds()); - ASSERT_THAT(sigaction(SIGSTOP, &act, nullptr), SyscallFailsWithErrno(EINVAL)); -} - -TEST(SigactionTest, BadSigsetFails) { - constexpr size_t kWrongSigSetSize = 43; - - struct sigaction act = {}; - - // The syscall itself (rather than the libc wrapper) takes the sigset_t size. - ASSERT_THAT( - syscall(SYS_rt_sigaction, SIGTERM, nullptr, &act, kWrongSigSetSize), - SyscallFailsWithErrno(EINVAL)); - ASSERT_THAT( - syscall(SYS_rt_sigaction, SIGTERM, &act, nullptr, kWrongSigSetSize), - SyscallFailsWithErrno(EINVAL)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/sigaltstack.cc b/test/syscalls/linux/sigaltstack.cc deleted file mode 100644 index 24e7c4960..000000000 --- a/test/syscalls/linux/sigaltstack.cc +++ /dev/null @@ -1,268 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <signal.h> -#include <stdio.h> -#include <string.h> -#include <unistd.h> - -#include <functional> -#include <vector> - -#include "gtest/gtest.h" -#include "test/util/cleanup.h" -#include "test/util/fs_util.h" -#include "test/util/multiprocess_util.h" -#include "test/util/posix_error.h" -#include "test/util/signal_util.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -PosixErrorOr<Cleanup> ScopedSigaltstack(stack_t const& stack) { - stack_t old_stack; - int rc = sigaltstack(&stack, &old_stack); - MaybeSave(); - if (rc < 0) { - return PosixError(errno, "sigaltstack failed"); - } - return Cleanup([old_stack] { - EXPECT_THAT(sigaltstack(&old_stack, nullptr), SyscallSucceeds()); - }); -} - -volatile bool got_signal = false; -volatile int sigaltstack_errno = 0; -volatile int ss_flags = 0; - -void sigaltstack_handler(int sig, siginfo_t* siginfo, void* arg) { - got_signal = true; - - stack_t stack; - int ret = sigaltstack(nullptr, &stack); - MaybeSave(); - if (ret < 0) { - sigaltstack_errno = errno; - return; - } - ss_flags = stack.ss_flags; -} - -TEST(SigaltstackTest, Success) { - std::vector<char> stack_mem(SIGSTKSZ); - stack_t stack = {}; - stack.ss_sp = stack_mem.data(); - stack.ss_size = stack_mem.size(); - auto const cleanup_sigstack = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaltstack(stack)); - - struct sigaction sa = {}; - sa.sa_sigaction = sigaltstack_handler; - sigfillset(&sa.sa_mask); - sa.sa_flags = SA_SIGINFO | SA_ONSTACK; - auto const cleanup_sa = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGUSR1, sa)); - - // Send signal to this thread, as sigaltstack is per-thread. - EXPECT_THAT(tgkill(getpid(), gettid(), SIGUSR1), SyscallSucceeds()); - - EXPECT_TRUE(got_signal); - EXPECT_EQ(sigaltstack_errno, 0); - EXPECT_NE(0, ss_flags & SS_ONSTACK); -} - -TEST(SigaltstackTest, ResetByExecve) { - std::vector<char> stack_mem(SIGSTKSZ); - stack_t stack = {}; - stack.ss_sp = stack_mem.data(); - stack.ss_size = stack_mem.size(); - auto const cleanup_sigstack = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaltstack(stack)); - - std::string full_path = RunfilePath("test/syscalls/linux/sigaltstack_check"); - - pid_t child_pid = -1; - int execve_errno = 0; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec(full_path, {"sigaltstack_check"}, {}, nullptr, &child_pid, - &execve_errno)); - - ASSERT_GT(child_pid, 0); - ASSERT_EQ(execve_errno, 0); - - int status = 0; - ASSERT_THAT(RetryEINTR(waitpid)(child_pid, &status, 0), SyscallSucceeds()); - ASSERT_TRUE(WIFEXITED(status)); - ASSERT_EQ(WEXITSTATUS(status), 0); -} - -volatile bool badhandler_on_sigaltstack = true; // Set by the handler. -char* volatile badhandler_low_water_mark = nullptr; // Set by the handler. -volatile uint8_t badhandler_recursive_faults = 0; // Consumed by the handler. - -void badhandler(int sig, siginfo_t* siginfo, void* arg) { - char stack_var = 0; - char* current_ss = &stack_var; - - stack_t stack; - int ret = sigaltstack(nullptr, &stack); - if (ret < 0 || (stack.ss_flags & SS_ONSTACK) != SS_ONSTACK) { - // We should always be marked as being on the stack. Don't allow this to hit - // the bottom if this is ever not true (the main test will fail as a - // result, but we still need to unwind the recursive faults). - badhandler_on_sigaltstack = false; - } - if (current_ss < badhandler_low_water_mark) { - // Record the low point for the signal stack. We never expected this to be - // before stack bottom, but this is asserted in the actual test. - badhandler_low_water_mark = current_ss; - } - if (badhandler_recursive_faults > 0) { - badhandler_recursive_faults--; - Fault(); - } - FixupFault(reinterpret_cast<ucontext_t*>(arg)); -} - -TEST(SigaltstackTest, WalksOffBottom) { - // This test marks the upper half of the stack_mem array as the signal stack. - // It asserts that when a fault occurs in the handler (already on the signal - // stack), we eventually continue to fault our way off the stack. We should - // not revert to the top of the signal stack when we fall off the bottom and - // the signal stack should remain "in use". When we fall off the signal stack, - // we should have an unconditional signal delivered and not start using the - // first part of the stack_mem array. - std::vector<char> stack_mem(SIGSTKSZ * 2); - stack_t stack = {}; - stack.ss_sp = stack_mem.data() + SIGSTKSZ; // See above: upper half. - stack.ss_size = SIGSTKSZ; // Only one half the array. - auto const cleanup_sigstack = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaltstack(stack)); - - // Setup the handler: this must be for SIGSEGV, and it must allow proper - // nesting (no signal mask, no defer) so that we can trigger multiple times. - // - // When we walk off the bottom of the signal stack and force signal delivery - // of a SIGSEGV, the handler will revert to the default behavior (kill). - struct sigaction sa = {}; - sa.sa_sigaction = badhandler; - sa.sa_flags = SA_SIGINFO | SA_ONSTACK | SA_NODEFER; - auto const cleanup_sa = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGSEGV, sa)); - - // Trigger a single fault. - badhandler_low_water_mark = - static_cast<char*>(stack.ss_sp) + SIGSTKSZ; // Expected top. - badhandler_recursive_faults = 0; // Disable refault. - Fault(); - EXPECT_TRUE(badhandler_on_sigaltstack); - EXPECT_THAT(sigaltstack(nullptr, &stack), SyscallSucceeds()); - EXPECT_EQ(stack.ss_flags & SS_ONSTACK, 0); - EXPECT_LT(badhandler_low_water_mark, - reinterpret_cast<char*>(stack.ss_sp) + 2 * SIGSTKSZ); - EXPECT_GT(badhandler_low_water_mark, reinterpret_cast<char*>(stack.ss_sp)); - - // Trigger two faults. - char* prev_low_water_mark = badhandler_low_water_mark; // Previous top. - badhandler_recursive_faults = 1; // One refault. - Fault(); - ASSERT_TRUE(badhandler_on_sigaltstack); - EXPECT_THAT(sigaltstack(nullptr, &stack), SyscallSucceeds()); - EXPECT_EQ(stack.ss_flags & SS_ONSTACK, 0); - EXPECT_LT(badhandler_low_water_mark, prev_low_water_mark); - EXPECT_GT(badhandler_low_water_mark, reinterpret_cast<char*>(stack.ss_sp)); - - // Calculate the stack growth for a fault, and set the recursive faults to - // ensure that the signal handler stack required exceeds our marked stack area - // by a minimal amount. It should remain in the valid stack_mem area so that - // we can test the signal is forced merely by going out of the signal stack - // bounds, not by a genuine fault. - uintptr_t frame_size = - static_cast<uintptr_t>(prev_low_water_mark - badhandler_low_water_mark); - badhandler_recursive_faults = (SIGSTKSZ + frame_size) / frame_size; - EXPECT_EXIT(Fault(), ::testing::KilledBySignal(SIGSEGV), ""); -} - -volatile int setonstack_retval = 0; // Set by the handler. -volatile int setonstack_errno = 0; // Set by the handler. - -void setonstack(int sig, siginfo_t* siginfo, void* arg) { - char stack_mem[SIGSTKSZ]; - stack_t stack = {}; - stack.ss_sp = &stack_mem[0]; - stack.ss_size = SIGSTKSZ; - setonstack_retval = sigaltstack(&stack, nullptr); - setonstack_errno = errno; - FixupFault(reinterpret_cast<ucontext_t*>(arg)); -} - -TEST(SigaltstackTest, SetWhileOnStack) { - // Reserve twice as much stack here, since the handler will allocate a vector - // of size SIGTKSZ and attempt to set the sigaltstack to that value. - std::vector<char> stack_mem(2 * SIGSTKSZ); - stack_t stack = {}; - stack.ss_sp = stack_mem.data(); - stack.ss_size = stack_mem.size(); - auto const cleanup_sigstack = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaltstack(stack)); - - // See above. - struct sigaction sa = {}; - sa.sa_sigaction = setonstack; - sa.sa_flags = SA_SIGINFO | SA_ONSTACK; - auto const cleanup_sa = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGSEGV, sa)); - - // Trigger a fault. - Fault(); - - // The set should have failed. - EXPECT_EQ(setonstack_retval, -1); - EXPECT_EQ(setonstack_errno, EPERM); -} - -TEST(SigaltstackTest, SetCurrentStack) { - // This is executed as an exit test because once the signal stack is set to - // the local stack, there's no good way to unwind. We don't want to taint the - // test of any other tests that might run within this process. - EXPECT_EXIT( - { - char stack_value = 0; - stack_t stack = {}; - stack.ss_sp = &stack_value - kPageSize; // Lower than current level. - stack.ss_size = 2 * kPageSize; // => &stack_value +/- kPageSize. - TEST_CHECK(sigaltstack(&stack, nullptr) == 0); - TEST_CHECK(sigaltstack(nullptr, &stack) == 0); - TEST_CHECK((stack.ss_flags & SS_ONSTACK) != 0); - - // Should not be able to change the stack (even no-op). - TEST_CHECK(sigaltstack(&stack, nullptr) == -1 && errno == EPERM); - - // Should not be able to disable the stack. - stack.ss_flags = SS_DISABLE; - TEST_CHECK(sigaltstack(&stack, nullptr) == -1 && errno == EPERM); - exit(0); - }, - ::testing::ExitedWithCode(0), ""); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/sigaltstack_check.cc b/test/syscalls/linux/sigaltstack_check.cc deleted file mode 100644 index 5ac1b661d..000000000 --- a/test/syscalls/linux/sigaltstack_check.cc +++ /dev/null @@ -1,33 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// Checks that there is no alternate signal stack by default. -// -// Used by a test in sigaltstack.cc. -#include <errno.h> -#include <signal.h> -#include <stdio.h> -#include <string.h> -#include <unistd.h> - -#include "test/util/logging.h" - -int main(int /* argc */, char** /* argv */) { - stack_t stack; - TEST_CHECK(sigaltstack(nullptr, &stack) >= 0); - TEST_CHECK(stack.ss_flags == SS_DISABLE); - TEST_CHECK(stack.ss_sp == 0); - TEST_CHECK(stack.ss_size == 0); - return 0; -} diff --git a/test/syscalls/linux/sigiret.cc b/test/syscalls/linux/sigiret.cc deleted file mode 100644 index 4deb1ae95..000000000 --- a/test/syscalls/linux/sigiret.cc +++ /dev/null @@ -1,137 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <signal.h> -#include <sys/types.h> -#include <sys/ucontext.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "test/util/logging.h" -#include "test/util/signal_util.h" -#include "test/util/test_util.h" -#include "test/util/timer_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -constexpr uint64_t kOrigRcx = 0xdeadbeeffacefeed; -constexpr uint64_t kOrigR11 = 0xfacefeedbaad1dea; - -volatile int gotvtalrm, ready; - -void sigvtalrm(int sig, siginfo_t* siginfo, void* _uc) { - ucontext_t* uc = reinterpret_cast<ucontext_t*>(_uc); - - // Verify that: - // - test is in the busy-wait loop waiting for signal. - // - %rcx and %r11 values in mcontext_t match kOrigRcx and kOrigR11. - if (ready && - static_cast<uint64_t>(uc->uc_mcontext.gregs[REG_RCX]) == kOrigRcx && - static_cast<uint64_t>(uc->uc_mcontext.gregs[REG_R11]) == kOrigR11) { - // Modify the values %rcx and %r11 in the ucontext. These are the - // values seen by the application after the signal handler returns. - uc->uc_mcontext.gregs[REG_RCX] = ~kOrigRcx; - uc->uc_mcontext.gregs[REG_R11] = ~kOrigR11; - gotvtalrm = 1; - } -} - -TEST(SigIretTest, CheckRcxR11) { - // Setup signal handler for SIGVTALRM. - struct sigaction sa = {}; - sigfillset(&sa.sa_mask); - sa.sa_sigaction = sigvtalrm; - sa.sa_flags = SA_SIGINFO; - auto const action_cleanup = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGVTALRM, sa)); - - auto const mask_cleanup = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_UNBLOCK, SIGVTALRM)); - - // Setup itimer to fire after 500 msecs. - struct itimerval itimer = {}; - itimer.it_value.tv_usec = 500 * 1000; // 500 msecs. - auto const timer_cleanup = - ASSERT_NO_ERRNO_AND_VALUE(ScopedItimer(ITIMER_VIRTUAL, itimer)); - - // Initialize %rcx and %r11 and spin until the signal handler returns. - uint64_t rcx = kOrigRcx; - uint64_t r11 = kOrigR11; - asm volatile( - "movq %[rcx], %%rcx;" // %rcx = rcx - "movq %[r11], %%r11;" // %r11 = r11 - "movl $1, %[ready];" // ready = 1 - "1: pause; cmpl $0, %[gotvtalrm]; je 1b;" // while (!gotvtalrm); - "movq %%rcx, %[rcx];" // rcx = %rcx - "movq %%r11, %[r11];" // r11 = %r11 - : [ ready ] "=m"(ready), [ rcx ] "+m"(rcx), [ r11 ] "+m"(r11) - : [ gotvtalrm ] "m"(gotvtalrm) - : "cc", "memory", "rcx", "r11"); - - // If sigreturn(2) returns via 'sysret' then %rcx and %r11 will be - // clobbered and set to 'ptregs->rip' and 'ptregs->rflags' respectively. - // - // The following check verifies that %rcx and %r11 were not clobbered - // when returning from the signal handler (via sigreturn(2)). - EXPECT_EQ(rcx, ~kOrigRcx); - EXPECT_EQ(r11, ~kOrigR11); -} - -constexpr uint64_t kNonCanonicalRip = 0xCCCC000000000000; - -// Test that a non-canonical signal handler faults as expected. -TEST(SigIretTest, BadHandler) { - struct sigaction sa = {}; - sa.sa_sigaction = - reinterpret_cast<void (*)(int, siginfo_t*, void*)>(kNonCanonicalRip); - auto const cleanup = ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGUSR1, sa)); - - pid_t pid = fork(); - if (pid == 0) { - // Child, wait for signal. - while (1) { - pause(); - } - } - ASSERT_THAT(pid, SyscallSucceeds()); - - EXPECT_THAT(kill(pid, SIGUSR1), SyscallSucceeds()); - - int status; - EXPECT_THAT(waitpid(pid, &status, 0), SyscallSucceedsWithValue(pid)); - EXPECT_TRUE(WIFSIGNALED(status) && WTERMSIG(status) == SIGSEGV) - << "status = " << status; -} - -} // namespace - -} // namespace testing -} // namespace gvisor - -int main(int argc, char** argv) { - // SigIretTest.CheckRcxR11 depends on delivering SIGVTALRM to the main thread. - // Block SIGVTALRM so that any other threads created by TestInit will also - // have SIGVTALRM blocked. - sigset_t set; - sigemptyset(&set); - sigaddset(&set, SIGVTALRM); - TEST_PCHECK(sigprocmask(SIG_BLOCK, &set, nullptr) == 0); - - gvisor::testing::TestInit(&argc, &argv); - - return RUN_ALL_TESTS(); -} diff --git a/test/syscalls/linux/signalfd.cc b/test/syscalls/linux/signalfd.cc deleted file mode 100644 index 95be4b66c..000000000 --- a/test/syscalls/linux/signalfd.cc +++ /dev/null @@ -1,373 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <poll.h> -#include <signal.h> -#include <stdio.h> -#include <string.h> -#include <sys/signalfd.h> -#include <unistd.h> - -#include <functional> -#include <vector> - -#include "gtest/gtest.h" -#include "absl/synchronization/mutex.h" -#include "test/util/file_descriptor.h" -#include "test/util/posix_error.h" -#include "test/util/signal_util.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -using ::testing::KilledBySignal; - -namespace gvisor { -namespace testing { - -namespace { - -constexpr int kSigno = SIGUSR1; -constexpr int kSignoMax = 64; // SIGRTMAX -constexpr int kSignoAlt = SIGUSR2; - -// Returns a new signalfd. -inline PosixErrorOr<FileDescriptor> NewSignalFD(sigset_t* mask, int flags = 0) { - int fd = signalfd(-1, mask, flags); - MaybeSave(); - if (fd < 0) { - return PosixError(errno, "signalfd"); - } - return FileDescriptor(fd); -} - -class SignalfdTest : public ::testing::TestWithParam<int> {}; - -TEST_P(SignalfdTest, Basic) { - int signo = GetParam(); - // Create the signalfd. - sigset_t mask; - sigemptyset(&mask); - sigaddset(&mask, signo); - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(NewSignalFD(&mask, 0)); - - // Deliver the blocked signal. - const auto scoped_sigmask = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_BLOCK, signo)); - ASSERT_THAT(tgkill(getpid(), gettid(), signo), SyscallSucceeds()); - - // We should now read the signal. - struct signalfd_siginfo rbuf; - ASSERT_THAT(read(fd.get(), &rbuf, sizeof(rbuf)), - SyscallSucceedsWithValue(sizeof(rbuf))); - EXPECT_EQ(rbuf.ssi_signo, signo); -} - -TEST_P(SignalfdTest, MaskWorks) { - int signo = GetParam(); - // Create two signalfds with different masks. - sigset_t mask1, mask2; - sigemptyset(&mask1); - sigemptyset(&mask2); - sigaddset(&mask1, signo); - sigaddset(&mask2, kSignoAlt); - FileDescriptor fd1 = ASSERT_NO_ERRNO_AND_VALUE(NewSignalFD(&mask1, 0)); - FileDescriptor fd2 = ASSERT_NO_ERRNO_AND_VALUE(NewSignalFD(&mask2, 0)); - - // Deliver the two signals. - const auto scoped_sigmask1 = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_BLOCK, signo)); - const auto scoped_sigmask2 = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_BLOCK, kSignoAlt)); - ASSERT_THAT(tgkill(getpid(), gettid(), signo), SyscallSucceeds()); - ASSERT_THAT(tgkill(getpid(), gettid(), kSignoAlt), SyscallSucceeds()); - - // We should see the signals on the appropriate signalfds. - // - // We read in the opposite order as the signals deliver above, to ensure that - // we don't happen to read the correct signal from the correct signalfd. - struct signalfd_siginfo rbuf1, rbuf2; - ASSERT_THAT(read(fd2.get(), &rbuf2, sizeof(rbuf2)), - SyscallSucceedsWithValue(sizeof(rbuf2))); - EXPECT_EQ(rbuf2.ssi_signo, kSignoAlt); - ASSERT_THAT(read(fd1.get(), &rbuf1, sizeof(rbuf1)), - SyscallSucceedsWithValue(sizeof(rbuf1))); - EXPECT_EQ(rbuf1.ssi_signo, signo); -} - -TEST(Signalfd, Cloexec) { - // Exec tests confirm that O_CLOEXEC has the intended effect. We just create a - // signalfd with the appropriate flag here and assert that the FD has it set. - sigset_t mask; - sigemptyset(&mask); - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(NewSignalFD(&mask, SFD_CLOEXEC)); - EXPECT_THAT(fcntl(fd.get(), F_GETFD), SyscallSucceedsWithValue(FD_CLOEXEC)); -} - -TEST_P(SignalfdTest, Blocking) { - int signo = GetParam(); - // Create the signalfd in blocking mode. - sigset_t mask; - sigemptyset(&mask); - sigaddset(&mask, signo); - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(NewSignalFD(&mask, 0)); - - // Shared tid variable. - absl::Mutex mu; - bool has_tid; - pid_t tid; - - // Start a thread reading. - ScopedThread t([&] { - // Copy the tid and notify the caller. - { - absl::MutexLock ml(&mu); - tid = gettid(); - has_tid = true; - } - - // Read the signal from the signalfd. - struct signalfd_siginfo rbuf; - ASSERT_THAT(read(fd.get(), &rbuf, sizeof(rbuf)), - SyscallSucceedsWithValue(sizeof(rbuf))); - EXPECT_EQ(rbuf.ssi_signo, signo); - }); - - // Wait until blocked. - absl::MutexLock ml(&mu); - mu.Await(absl::Condition(&has_tid)); - - // Deliver the signal to either the waiting thread, or - // to this thread. N.B. this is a bug in the core gVisor - // behavior for signalfd, and needs to be fixed. - // - // See gvisor.dev/issue/139. - if (IsRunningOnGvisor()) { - ASSERT_THAT(tgkill(getpid(), gettid(), signo), SyscallSucceeds()); - } else { - ASSERT_THAT(tgkill(getpid(), tid, signo), SyscallSucceeds()); - } - - // Ensure that it was received. - t.Join(); -} - -TEST_P(SignalfdTest, ThreadGroup) { - int signo = GetParam(); - // Create the signalfd in blocking mode. - sigset_t mask; - sigemptyset(&mask); - sigaddset(&mask, signo); - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(NewSignalFD(&mask, 0)); - - // Shared variable. - absl::Mutex mu; - bool first = false; - bool second = false; - - // Start a thread reading. - ScopedThread t([&] { - // Read the signal from the signalfd. - struct signalfd_siginfo rbuf; - ASSERT_THAT(read(fd.get(), &rbuf, sizeof(rbuf)), - SyscallSucceedsWithValue(sizeof(rbuf))); - EXPECT_EQ(rbuf.ssi_signo, signo); - - // Wait for the other thread. - absl::MutexLock ml(&mu); - first = true; - mu.Await(absl::Condition(&second)); - }); - - // Deliver the signal to the threadgroup. - ASSERT_THAT(kill(getpid(), signo), SyscallSucceeds()); - - // Wait for the first thread to process. - { - absl::MutexLock ml(&mu); - mu.Await(absl::Condition(&first)); - } - - // Deliver to the thread group again (other thread still exists). - ASSERT_THAT(kill(getpid(), signo), SyscallSucceeds()); - - // Ensure that we can also receive it. - struct signalfd_siginfo rbuf; - ASSERT_THAT(read(fd.get(), &rbuf, sizeof(rbuf)), - SyscallSucceedsWithValue(sizeof(rbuf))); - EXPECT_EQ(rbuf.ssi_signo, signo); - - // Mark the test as done. - { - absl::MutexLock ml(&mu); - second = true; - } - - // The other thread should be joinable. - t.Join(); -} - -TEST_P(SignalfdTest, Nonblock) { - int signo = GetParam(); - // Create the signalfd in non-blocking mode. - sigset_t mask; - sigemptyset(&mask); - sigaddset(&mask, signo); - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(NewSignalFD(&mask, SFD_NONBLOCK)); - - // We should return if we attempt to read. - struct signalfd_siginfo rbuf; - ASSERT_THAT(read(fd.get(), &rbuf, sizeof(rbuf)), - SyscallFailsWithErrno(EWOULDBLOCK)); - - // Block and deliver the signal. - const auto scoped_sigmask = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_BLOCK, signo)); - ASSERT_THAT(tgkill(getpid(), gettid(), signo), SyscallSucceeds()); - - // Ensure that a read actually works. - ASSERT_THAT(read(fd.get(), &rbuf, sizeof(rbuf)), - SyscallSucceedsWithValue(sizeof(rbuf))); - EXPECT_EQ(rbuf.ssi_signo, signo); - - // Should block again. - EXPECT_THAT(read(fd.get(), &rbuf, sizeof(rbuf)), - SyscallFailsWithErrno(EWOULDBLOCK)); -} - -TEST_P(SignalfdTest, SetMask) { - int signo = GetParam(); - // Create the signalfd matching nothing. - sigset_t mask; - sigemptyset(&mask); - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(NewSignalFD(&mask, SFD_NONBLOCK)); - - // Block and deliver a signal. - const auto scoped_sigmask = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_BLOCK, signo)); - ASSERT_THAT(tgkill(getpid(), gettid(), signo), SyscallSucceeds()); - - // We should have nothing. - struct signalfd_siginfo rbuf; - ASSERT_THAT(read(fd.get(), &rbuf, sizeof(rbuf)), - SyscallFailsWithErrno(EWOULDBLOCK)); - - // Change the signal mask. - sigaddset(&mask, signo); - ASSERT_THAT(signalfd(fd.get(), &mask, 0), SyscallSucceeds()); - - // We should now have the signal. - ASSERT_THAT(read(fd.get(), &rbuf, sizeof(rbuf)), - SyscallSucceedsWithValue(sizeof(rbuf))); - EXPECT_EQ(rbuf.ssi_signo, signo); -} - -TEST_P(SignalfdTest, Poll) { - int signo = GetParam(); - // Create the signalfd. - sigset_t mask; - sigemptyset(&mask); - sigaddset(&mask, signo); - FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(NewSignalFD(&mask, 0)); - - // Block the signal, and start a thread to deliver it. - const auto scoped_sigmask = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_BLOCK, signo)); - pid_t orig_tid = gettid(); - ScopedThread t([&] { - absl::SleepFor(absl::Seconds(5)); - ASSERT_THAT(tgkill(getpid(), orig_tid, signo), SyscallSucceeds()); - }); - - // Start polling for the signal. We expect that it is not available at the - // outset, but then becomes available when the signal is sent. We give a - // timeout of 10000ms (or the delay above + 5 seconds of additional grace - // time). - struct pollfd poll_fd = {fd.get(), POLLIN, 0}; - EXPECT_THAT(RetryEINTR(poll)(&poll_fd, 1, 10000), - SyscallSucceedsWithValue(1)); - - // Actually read the signal to prevent delivery. - struct signalfd_siginfo rbuf; - EXPECT_THAT(read(fd.get(), &rbuf, sizeof(rbuf)), - SyscallSucceedsWithValue(sizeof(rbuf))); -} - -std::string PrintSigno(::testing::TestParamInfo<int> info) { - switch (info.param) { - case kSigno: - return "kSigno"; - case kSignoMax: - return "kSignoMax"; - default: - return absl::StrCat(info.param); - } -} -INSTANTIATE_TEST_SUITE_P(Signalfd, SignalfdTest, - ::testing::Values(kSigno, kSignoMax), PrintSigno); - -TEST(Signalfd, Ppoll) { - sigset_t mask; - sigemptyset(&mask); - sigaddset(&mask, SIGKILL); - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(NewSignalFD(&mask, SFD_CLOEXEC)); - - // Ensure that the given ppoll blocks. - struct pollfd pfd = {}; - pfd.fd = fd.get(); - pfd.events = POLLIN; - struct timespec timeout = {}; - timeout.tv_sec = 1; - EXPECT_THAT(RetryEINTR(ppoll)(&pfd, 1, &timeout, &mask), - SyscallSucceedsWithValue(0)); -} - -TEST(Signalfd, KillStillKills) { - sigset_t mask; - sigemptyset(&mask); - sigaddset(&mask, SIGKILL); - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(NewSignalFD(&mask, SFD_CLOEXEC)); - - // Just because there is a signalfd, we shouldn't see any change in behavior - // for unblockable signals. It's easier to test this with SIGKILL. - const auto scoped_sigmask = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_BLOCK, SIGKILL)); - EXPECT_EXIT(tgkill(getpid(), gettid(), SIGKILL), KilledBySignal(SIGKILL), ""); -} - -} // namespace - -} // namespace testing -} // namespace gvisor - -int main(int argc, char** argv) { - // These tests depend on delivering signals. Block them up front so that all - // other threads created by TestInit will also have them blocked, and they - // will not interface with the rest of the test. - sigset_t set; - sigemptyset(&set); - sigaddset(&set, gvisor::testing::kSigno); - sigaddset(&set, gvisor::testing::kSignoMax); - sigaddset(&set, gvisor::testing::kSignoAlt); - TEST_PCHECK(sigprocmask(SIG_BLOCK, &set, nullptr) == 0); - - gvisor::testing::TestInit(&argc, &argv); - - return RUN_ALL_TESTS(); -} diff --git a/test/syscalls/linux/sigprocmask.cc b/test/syscalls/linux/sigprocmask.cc deleted file mode 100644 index a603fc1d1..000000000 --- a/test/syscalls/linux/sigprocmask.cc +++ /dev/null @@ -1,269 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <signal.h> -#include <stddef.h> -#include <sys/syscall.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "test/util/signal_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -// Signals numbers used for testing. -static constexpr int kTestSignal1 = SIGUSR1; -static constexpr int kTestSignal2 = SIGUSR2; - -static int raw_sigprocmask(int how, const sigset_t* set, sigset_t* oldset) { - return syscall(SYS_rt_sigprocmask, how, set, oldset, _NSIG / 8); -} - -// count of the number of signals received -int signal_count[kMaxSignal + 1]; - -// signal handler increments the signal counter -void SigHandler(int sig, siginfo_t* info, void* context) { - TEST_CHECK(sig > 0 && sig <= kMaxSignal); - signal_count[sig] += 1; -} - -// The test fixture saves and restores the signal mask and -// sets up handlers for kTestSignal1 and kTestSignal2. -class SigProcMaskTest : public ::testing::Test { - protected: - void SetUp() override { - // Save the current signal mask. - EXPECT_THAT(raw_sigprocmask(SIG_SETMASK, nullptr, &mask_), - SyscallSucceeds()); - - // Setup signal handlers for kTestSignal1 and kTestSignal2. - struct sigaction sa; - sa.sa_sigaction = SigHandler; - sigfillset(&sa.sa_mask); - sa.sa_flags = SA_SIGINFO; - EXPECT_THAT(sigaction(kTestSignal1, &sa, &sa_test_sig_1_), - SyscallSucceeds()); - EXPECT_THAT(sigaction(kTestSignal2, &sa, &sa_test_sig_2_), - SyscallSucceeds()); - - // Clear the signal counters. - memset(signal_count, 0, sizeof(signal_count)); - } - - void TearDown() override { - // Restore the signal mask. - EXPECT_THAT(raw_sigprocmask(SIG_SETMASK, &mask_, nullptr), - SyscallSucceeds()); - - // Restore the signal handlers for kTestSignal1 and kTestSignal2. - EXPECT_THAT(sigaction(kTestSignal1, &sa_test_sig_1_, nullptr), - SyscallSucceeds()); - EXPECT_THAT(sigaction(kTestSignal2, &sa_test_sig_2_, nullptr), - SyscallSucceeds()); - } - - private: - sigset_t mask_; - struct sigaction sa_test_sig_1_; - struct sigaction sa_test_sig_2_; -}; - -// Both sigsets nullptr should succeed and do nothing. -TEST_F(SigProcMaskTest, NullAddress) { - EXPECT_THAT(raw_sigprocmask(SIG_BLOCK, nullptr, NULL), SyscallSucceeds()); - EXPECT_THAT(raw_sigprocmask(SIG_UNBLOCK, nullptr, NULL), SyscallSucceeds()); - EXPECT_THAT(raw_sigprocmask(SIG_SETMASK, nullptr, NULL), SyscallSucceeds()); -} - -// Bad address for either sigset should fail with EFAULT. -TEST_F(SigProcMaskTest, BadAddress) { - sigset_t* bad_addr = reinterpret_cast<sigset_t*>(-1); - - EXPECT_THAT(raw_sigprocmask(SIG_SETMASK, bad_addr, nullptr), - SyscallFailsWithErrno(EFAULT)); - - EXPECT_THAT(raw_sigprocmask(SIG_SETMASK, nullptr, bad_addr), - SyscallFailsWithErrno(EFAULT)); -} - -// Bad value of the "how" parameter should fail with EINVAL. -TEST_F(SigProcMaskTest, BadParameter) { - int bad_param_1 = -1; - int bad_param_2 = 42; - - sigset_t set1; - sigemptyset(&set1); - - EXPECT_THAT(raw_sigprocmask(bad_param_1, &set1, nullptr), - SyscallFailsWithErrno(EINVAL)); - - EXPECT_THAT(raw_sigprocmask(bad_param_2, &set1, nullptr), - SyscallFailsWithErrno(EINVAL)); -} - -// Check that we can get the current signal mask. -TEST_F(SigProcMaskTest, GetMask) { - sigset_t set1; - sigset_t set2; - - sigemptyset(&set1); - sigfillset(&set2); - EXPECT_THAT(raw_sigprocmask(SIG_SETMASK, nullptr, &set1), SyscallSucceeds()); - EXPECT_THAT(raw_sigprocmask(SIG_SETMASK, nullptr, &set2), SyscallSucceeds()); - EXPECT_THAT(set1, EqualsSigset(set2)); -} - -// Check that we can set the signal mask. -TEST_F(SigProcMaskTest, SetMask) { - sigset_t actual; - sigset_t expected; - - // Try to mask all signals - sigfillset(&expected); - EXPECT_THAT(raw_sigprocmask(SIG_SETMASK, &expected, nullptr), - SyscallSucceeds()); - EXPECT_THAT(raw_sigprocmask(SIG_SETMASK, nullptr, &actual), - SyscallSucceeds()); - // sigprocmask() should have silently ignored SIGKILL and SIGSTOP. - sigdelset(&expected, SIGSTOP); - sigdelset(&expected, SIGKILL); - EXPECT_THAT(actual, EqualsSigset(expected)); - - // Try to clear the signal mask - sigemptyset(&expected); - EXPECT_THAT(raw_sigprocmask(SIG_SETMASK, &expected, nullptr), - SyscallSucceeds()); - EXPECT_THAT(raw_sigprocmask(SIG_SETMASK, nullptr, &actual), - SyscallSucceeds()); - EXPECT_THAT(actual, EqualsSigset(expected)); - - // Try to set a mask with one signal. - sigemptyset(&expected); - sigaddset(&expected, kTestSignal1); - EXPECT_THAT(raw_sigprocmask(SIG_SETMASK, &expected, nullptr), - SyscallSucceeds()); - EXPECT_THAT(raw_sigprocmask(SIG_SETMASK, nullptr, &actual), - SyscallSucceeds()); - EXPECT_THAT(actual, EqualsSigset(expected)); -} - -// Check that we can add and remove signals. -TEST_F(SigProcMaskTest, BlockUnblock) { - sigset_t actual; - sigset_t expected; - - // Try to set a mask with one signal. - sigemptyset(&expected); - sigaddset(&expected, kTestSignal1); - EXPECT_THAT(raw_sigprocmask(SIG_SETMASK, &expected, nullptr), - SyscallSucceeds()); - EXPECT_THAT(raw_sigprocmask(SIG_SETMASK, nullptr, &actual), - SyscallSucceeds()); - EXPECT_THAT(actual, EqualsSigset(expected)); - - // Try to add another signal. - sigset_t block; - sigemptyset(&block); - sigaddset(&block, kTestSignal2); - EXPECT_THAT(raw_sigprocmask(SIG_BLOCK, &block, nullptr), SyscallSucceeds()); - EXPECT_THAT(raw_sigprocmask(SIG_SETMASK, nullptr, &actual), - SyscallSucceeds()); - sigaddset(&expected, kTestSignal2); - EXPECT_THAT(actual, EqualsSigset(expected)); - - // Try to remove a signal. - sigset_t unblock; - sigemptyset(&unblock); - sigaddset(&unblock, kTestSignal1); - EXPECT_THAT(raw_sigprocmask(SIG_UNBLOCK, &unblock, nullptr), - SyscallSucceeds()); - EXPECT_THAT(raw_sigprocmask(SIG_SETMASK, nullptr, &actual), - SyscallSucceeds()); - sigdelset(&expected, kTestSignal1); - EXPECT_THAT(actual, EqualsSigset(expected)); -} - -// Test that the signal mask actually blocks signals. -TEST_F(SigProcMaskTest, SignalHandler) { - sigset_t mask; - - // clear the signal mask - sigemptyset(&mask); - EXPECT_THAT(raw_sigprocmask(SIG_SETMASK, &mask, nullptr), SyscallSucceeds()); - - // Check the initial signal counts. - EXPECT_EQ(0, signal_count[kTestSignal1]); - EXPECT_EQ(0, signal_count[kTestSignal2]); - - // Check that both kTestSignal1 and kTestSignal2 are not blocked. - raise(kTestSignal1); - raise(kTestSignal2); - EXPECT_EQ(1, signal_count[kTestSignal1]); - EXPECT_EQ(1, signal_count[kTestSignal2]); - - // Block kTestSignal1. - sigaddset(&mask, kTestSignal1); - EXPECT_THAT(raw_sigprocmask(SIG_BLOCK, &mask, nullptr), SyscallSucceeds()); - - // Check that kTestSignal1 is blocked. - raise(kTestSignal1); - raise(kTestSignal2); - EXPECT_EQ(1, signal_count[kTestSignal1]); - EXPECT_EQ(2, signal_count[kTestSignal2]); - - // Unblock kTestSignal1. - sigaddset(&mask, kTestSignal1); - EXPECT_THAT(raw_sigprocmask(SIG_UNBLOCK, &mask, nullptr), SyscallSucceeds()); - - // Check that the unblocked kTestSignal1 has been delivered. - EXPECT_EQ(2, signal_count[kTestSignal1]); - EXPECT_EQ(2, signal_count[kTestSignal2]); -} - -// Check that sigprocmask correctly handles aliasing of the set and oldset -// pointers. Regression test for b/30502311. -TEST_F(SigProcMaskTest, AliasedSets) { - sigset_t mask; - - // Set a mask in which only kTestSignal1 is blocked. - sigset_t mask1; - sigemptyset(&mask1); - sigaddset(&mask1, kTestSignal1); - mask = mask1; - ASSERT_THAT(raw_sigprocmask(SIG_SETMASK, &mask, nullptr), SyscallSucceeds()); - - // Exchange it with a mask in which only kTestSignal2 is blocked. - sigset_t mask2; - sigemptyset(&mask2); - sigaddset(&mask2, kTestSignal2); - mask = mask2; - ASSERT_THAT(raw_sigprocmask(SIG_SETMASK, &mask, &mask), SyscallSucceeds()); - - // Check that the exchange succeeeded: - // mask should now contain the previously-set mask blocking only kTestSignal1. - EXPECT_THAT(mask, EqualsSigset(mask1)); - // The current mask should block only kTestSignal2. - ASSERT_THAT(raw_sigprocmask(0, nullptr, &mask), SyscallSucceeds()); - EXPECT_THAT(mask, EqualsSigset(mask2)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/sigstop.cc b/test/syscalls/linux/sigstop.cc deleted file mode 100644 index 7db57d968..000000000 --- a/test/syscalls/linux/sigstop.cc +++ /dev/null @@ -1,151 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <signal.h> -#include <stdlib.h> -#include <sys/select.h> - -#include "gtest/gtest.h" -#include "absl/flags/flag.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/util/multiprocess_util.h" -#include "test/util/posix_error.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -ABSL_FLAG(bool, sigstop_test_child, false, - "If true, run the SigstopTest child workload."); - -namespace gvisor { -namespace testing { - -namespace { - -constexpr absl::Duration kChildStartupDelay = absl::Seconds(5); -constexpr absl::Duration kChildMainThreadDelay = absl::Seconds(10); -constexpr absl::Duration kChildExtraThreadDelay = absl::Seconds(15); -constexpr absl::Duration kPostSIGSTOPDelay = absl::Seconds(20); - -// Comparisons on absl::Duration aren't yet constexpr (2017-07-14), so we -// can't just use static_assert. -TEST(SigstopTest, TimesAreRelativelyConsistent) { - EXPECT_LT(kChildStartupDelay, kChildMainThreadDelay) - << "Child process will exit before the parent process attempts to stop " - "it"; - EXPECT_LT(kChildMainThreadDelay, kChildExtraThreadDelay) - << "Secondary thread in child process will exit before main thread, " - "causing it to exit with the wrong code"; - EXPECT_LT(kChildExtraThreadDelay, kPostSIGSTOPDelay) - << "Parent process stops waiting before child process may exit if " - "improperly stopped, rendering the test ineffective"; -} - -// Exit codes communicated from the child workload to the parent test process. -constexpr int kChildMainThreadExitCode = 10; -constexpr int kChildExtraThreadExitCode = 11; - -TEST(SigstopTest, Correctness) { - pid_t child_pid = -1; - int execve_errno = 0; - auto cleanup = ASSERT_NO_ERRNO_AND_VALUE( - ForkAndExec("/proc/self/exe", {"/proc/self/exe", "--sigstop_test_child"}, - {}, nullptr, &child_pid, &execve_errno)); - - ASSERT_GT(child_pid, 0); - ASSERT_EQ(execve_errno, 0); - - // Wait for the child subprocess to start the second thread before stopping - // it. - absl::SleepFor(kChildStartupDelay); - ASSERT_THAT(kill(child_pid, SIGSTOP), SyscallSucceeds()); - int status; - EXPECT_THAT(RetryEINTR(waitpid)(child_pid, &status, WUNTRACED), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFSTOPPED(status)); - EXPECT_EQ(SIGSTOP, WSTOPSIG(status)); - - // Sleep for longer than either of the sleeps in the child subprocess, - // expecting the child to stay alive because it's stopped. - absl::SleepFor(kPostSIGSTOPDelay); - ASSERT_THAT(RetryEINTR(waitpid)(child_pid, &status, WNOHANG), - SyscallSucceedsWithValue(0)); - - // Resume the child. - ASSERT_THAT(kill(child_pid, SIGCONT), SyscallSucceeds()); - - EXPECT_THAT(RetryEINTR(waitpid)(child_pid, &status, WCONTINUED), - SyscallSucceedsWithValue(child_pid)); - EXPECT_TRUE(WIFCONTINUED(status)); - - // Expect it to die. - ASSERT_THAT(RetryEINTR(waitpid)(child_pid, &status, 0), SyscallSucceeds()); - ASSERT_TRUE(WIFEXITED(status)); - ASSERT_EQ(WEXITSTATUS(status), kChildMainThreadExitCode); -} - -// Like base:SleepFor, but tries to avoid counting time spent stopped due to a -// stop signal toward the sleep. -// -// This is required due to an inconsistency in how nanosleep(2) and stop signals -// interact on Linux. When nanosleep is interrupted, it writes the remaining -// time back to its second timespec argument, so that if nanosleep is -// interrupted by a signal handler then userspace can immediately call nanosleep -// again with that timespec. However, if nanosleep is automatically restarted -// (because it's interrupted by a signal that is not delivered to a handler, -// such as a stop signal), it's restarted based on the timer's former *absolute* -// expiration time (via ERESTART_RESTARTBLOCK => SYS_restart_syscall => -// hrtimer_nanosleep_restart). This means that time spent stopped is effectively -// counted as time spent sleeping, resulting in less time spent sleeping than -// expected. -// -// Dividing the sleep into multiple smaller sleeps limits the impact of this -// effect to the length of each sleep during which a stop occurs; for example, -// if a sleeping process is only stopped once, SleepIgnoreStopped can -// under-sleep by at most 100ms. -void SleepIgnoreStopped(absl::Duration d) { - absl::Duration const max_sleep = absl::Milliseconds(100); - while (d > absl::ZeroDuration()) { - absl::Duration to_sleep = std::min(d, max_sleep); - absl::SleepFor(to_sleep); - d -= to_sleep; - } -} - -void RunChild() { - // Start another thread that attempts to call exit_group with a different - // error code, in order to verify that SIGSTOP stops this thread as well. - ScopedThread t([] { - SleepIgnoreStopped(kChildExtraThreadDelay); - exit(kChildExtraThreadExitCode); - }); - SleepIgnoreStopped(kChildMainThreadDelay); - exit(kChildMainThreadExitCode); -} - -} // namespace - -} // namespace testing -} // namespace gvisor - -int main(int argc, char** argv) { - gvisor::testing::TestInit(&argc, &argv); - - if (absl::GetFlag(FLAGS_sigstop_test_child)) { - gvisor::testing::RunChild(); - return 1; - } - - return RUN_ALL_TESTS(); -} diff --git a/test/syscalls/linux/sigtimedwait.cc b/test/syscalls/linux/sigtimedwait.cc deleted file mode 100644 index 1e5bf5942..000000000 --- a/test/syscalls/linux/sigtimedwait.cc +++ /dev/null @@ -1,324 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <sys/wait.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/util/file_descriptor.h" -#include "test/util/logging.h" -#include "test/util/signal_util.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" -#include "test/util/timer_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -// N.B. main() blocks SIGALRM and SIGCHLD on all threads. - -constexpr int kAlarmSecs = 12; - -void NoopHandler(int sig, siginfo_t* info, void* context) {} - -TEST(SigtimedwaitTest, InvalidTimeout) { - sigset_t mask; - sigemptyset(&mask); - struct timespec timeout = {0, 1000000001}; - EXPECT_THAT(sigtimedwait(&mask, nullptr, &timeout), - SyscallFailsWithErrno(EINVAL)); - timeout = {-1, 0}; - EXPECT_THAT(sigtimedwait(&mask, nullptr, &timeout), - SyscallFailsWithErrno(EINVAL)); - timeout = {0, -1}; - EXPECT_THAT(sigtimedwait(&mask, nullptr, &timeout), - SyscallFailsWithErrno(EINVAL)); -} - -// No random save as the test relies on alarm timing. Cooperative save tests -// already cover the save between alarm and wait. -TEST(SigtimedwaitTest, AlarmReturnsAlarm_NoRandomSave) { - struct itimerval itv = {}; - itv.it_value.tv_sec = kAlarmSecs; - const auto itimer_cleanup = - ASSERT_NO_ERRNO_AND_VALUE(ScopedItimer(ITIMER_REAL, itv)); - - sigset_t mask; - sigemptyset(&mask); - sigaddset(&mask, SIGALRM); - siginfo_t info = {}; - EXPECT_THAT(RetryEINTR(sigtimedwait)(&mask, &info, nullptr), - SyscallSucceedsWithValue(SIGALRM)); - EXPECT_EQ(SIGALRM, info.si_signo); -} - -// No random save as the test relies on alarm timing. Cooperative save tests -// already cover the save between alarm and wait. -TEST(SigtimedwaitTest, NullTimeoutReturnsEINTR_NoRandomSave) { - struct sigaction sa; - sa.sa_sigaction = NoopHandler; - sigfillset(&sa.sa_mask); - sa.sa_flags = SA_SIGINFO; - const auto action_cleanup = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGALRM, sa)); - - const auto mask_cleanup = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_UNBLOCK, SIGALRM)); - - struct itimerval itv = {}; - itv.it_value.tv_sec = kAlarmSecs; - const auto itimer_cleanup = - ASSERT_NO_ERRNO_AND_VALUE(ScopedItimer(ITIMER_REAL, itv)); - - sigset_t mask; - sigemptyset(&mask); - EXPECT_THAT(sigtimedwait(&mask, nullptr, nullptr), - SyscallFailsWithErrno(EINTR)); -} - -TEST(SigtimedwaitTest, LegitTimeoutReturnsEAGAIN) { - sigset_t mask; - sigemptyset(&mask); - struct timespec timeout = {1, 0}; // 1 second - EXPECT_THAT(RetryEINTR(sigtimedwait)(&mask, nullptr, &timeout), - SyscallFailsWithErrno(EAGAIN)); -} - -TEST(SigtimedwaitTest, ZeroTimeoutReturnsEAGAIN) { - sigset_t mask; - sigemptyset(&mask); - struct timespec timeout = {0, 0}; // 0 second - EXPECT_THAT(sigtimedwait(&mask, nullptr, &timeout), - SyscallFailsWithErrno(EAGAIN)); -} - -TEST(SigtimedwaitTest, KillGeneratedSIGCHLD) { - EXPECT_THAT(kill(getpid(), SIGCHLD), SyscallSucceeds()); - - sigset_t mask; - sigemptyset(&mask); - sigaddset(&mask, SIGCHLD); - struct timespec ts = {5, 0}; - EXPECT_THAT(RetryEINTR(sigtimedwait)(&mask, nullptr, &ts), - SyscallSucceedsWithValue(SIGCHLD)); -} - -TEST(SigtimedwaitTest, ChildExitGeneratedSIGCHLD) { - pid_t pid = fork(); - if (pid == 0) { - _exit(0); - } - ASSERT_THAT(pid, SyscallSucceeds()); - - int status; - EXPECT_THAT(waitpid(pid, &status, 0), SyscallSucceedsWithValue(pid)); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) << status; - - sigset_t mask; - sigemptyset(&mask); - sigaddset(&mask, SIGCHLD); - struct timespec ts = {5, 0}; - EXPECT_THAT(RetryEINTR(sigtimedwait)(&mask, nullptr, &ts), - SyscallSucceedsWithValue(SIGCHLD)); -} - -TEST(SigtimedwaitTest, ChildExitGeneratedSIGCHLDWithHandler) { - // Setup handler for SIGCHLD, but don't unblock it. - struct sigaction sa; - sa.sa_sigaction = NoopHandler; - sigfillset(&sa.sa_mask); - sa.sa_flags = SA_SIGINFO; - const auto action_cleanup = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGCHLD, sa)); - - pid_t pid = fork(); - if (pid == 0) { - _exit(0); - } - ASSERT_THAT(pid, SyscallSucceeds()); - - sigset_t mask; - sigemptyset(&mask); - sigaddset(&mask, SIGCHLD); - struct timespec ts = {5, 0}; - EXPECT_THAT(RetryEINTR(sigtimedwait)(&mask, nullptr, &ts), - SyscallSucceedsWithValue(SIGCHLD)); - - int status; - EXPECT_THAT(waitpid(pid, &status, 0), SyscallSucceedsWithValue(pid)); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) << status; -} - -// sigtimedwait cannot catch SIGKILL. -TEST(SigtimedwaitTest, SIGKILLUncaught) { - // This is a regression test for sigtimedwait dequeuing SIGKILLs, thus - // preventing the task from exiting. - // - // The explanation below is specific to behavior in gVisor. The Linux behavior - // here is irrelevant because without a bug that prevents delivery of SIGKILL, - // none of this behavior is visible (in Linux or gVisor). - // - // SIGKILL is rather intrusive. Simply sending the SIGKILL marks - // ThreadGroup.exitStatus as exiting with SIGKILL, before the SIGKILL is even - // delivered. - // - // As a result, we cannot simply exit the child with a different exit code if - // it survives and expect to see that code in waitpid because: - // 1. PrepareGroupExit will override Task.exitStatus with - // ThreadGroup.exitStatus. - // 2. waitpid(2) will always return ThreadGroup.exitStatus rather than - // Task.exitStatus. - // - // We could use exit(2) to set Task.exitStatus without override, and a SIGCHLD - // handler to receive Task.exitStatus in the parent, but with that much - // test complexity, it is cleaner to simply use a pipe to notify the parent - // that we survived. - constexpr auto kSigtimedwaitSetupTime = absl::Seconds(2); - - int pipe_fds[2]; - ASSERT_THAT(pipe(pipe_fds), SyscallSucceeds()); - FileDescriptor rfd(pipe_fds[0]); - FileDescriptor wfd(pipe_fds[1]); - - pid_t pid = fork(); - if (pid == 0) { - rfd.reset(); - - sigset_t mask; - sigemptyset(&mask); - sigaddset(&mask, SIGKILL); - RetryEINTR(sigtimedwait)(&mask, nullptr, nullptr); - - // Survived. - char c = 'a'; - TEST_PCHECK(WriteFd(wfd.get(), &c, 1) == 1); - _exit(1); - } - ASSERT_THAT(pid, SyscallSucceeds()); - - wfd.reset(); - - // Wait for child to block in sigtimedwait, then kill it. - absl::SleepFor(kSigtimedwaitSetupTime); - - // Sending SIGKILL will attempt to enqueue the signal twice: once in the - // normal signal sending path, and once to all Tasks in the ThreadGroup when - // applying SIGKILL side-effects. - // - // If we use kill(2), the former will be on the ThreadGroup signal queue and - // the latter will be on the Task signal queue. sigtimedwait can only dequeue - // one signal, so the other would kill the Task, masking bugs. - // - // If we use tkill(2), the former will be on the Task signal queue and the - // latter will be dropped as a duplicate. Then sigtimedwait can theoretically - // dequeue the single SIGKILL. - EXPECT_THAT(syscall(SYS_tkill, pid, SIGKILL), SyscallSucceeds()); - - int status; - EXPECT_THAT(RetryEINTR(waitpid)(pid, &status, 0), - SyscallSucceedsWithValue(pid)); - EXPECT_TRUE(WIFSIGNALED(status) && WTERMSIG(status) == SIGKILL) << status; - - // Child shouldn't have survived. - char c; - EXPECT_THAT(ReadFd(rfd.get(), &c, 1), SyscallSucceedsWithValue(0)); -} - -TEST(SigtimedwaitTest, IgnoredUnmaskedSignal) { - constexpr int kSigno = SIGUSR1; - constexpr auto kSigtimedwaitSetupTime = absl::Seconds(2); - constexpr auto kSigtimedwaitTimeout = absl::Seconds(5); - ASSERT_GT(kSigtimedwaitTimeout, kSigtimedwaitSetupTime); - - // Ensure that kSigno is ignored, and unmasked on this thread. - struct sigaction sa = {}; - sa.sa_handler = SIG_IGN; - const auto scoped_sigaction = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(kSigno, sa)); - sigset_t mask; - sigemptyset(&mask); - sigaddset(&mask, kSigno); - auto scoped_sigmask = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_UNBLOCK, mask)); - - // Create a thread which will send us kSigno while we are blocked in - // sigtimedwait. - pid_t tid = gettid(); - ScopedThread sigthread([&] { - absl::SleepFor(kSigtimedwaitSetupTime); - EXPECT_THAT(tgkill(getpid(), tid, kSigno), SyscallSucceeds()); - }); - - // sigtimedwait should not observe kSigno since it is ignored and already - // unmasked, causing it to be dropped before it is enqueued. - struct timespec timeout_ts = absl::ToTimespec(kSigtimedwaitTimeout); - EXPECT_THAT(RetryEINTR(sigtimedwait)(&mask, nullptr, &timeout_ts), - SyscallFailsWithErrno(EAGAIN)); -} - -TEST(SigtimedwaitTest, IgnoredMaskedSignal) { - constexpr int kSigno = SIGUSR1; - constexpr auto kSigtimedwaitSetupTime = absl::Seconds(2); - constexpr auto kSigtimedwaitTimeout = absl::Seconds(5); - ASSERT_GT(kSigtimedwaitTimeout, kSigtimedwaitSetupTime); - - // Ensure that kSigno is ignored, and masked on this thread. - struct sigaction sa = {}; - sa.sa_handler = SIG_IGN; - const auto scoped_sigaction = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(kSigno, sa)); - sigset_t mask; - sigemptyset(&mask); - sigaddset(&mask, kSigno); - auto scoped_sigmask = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_BLOCK, mask)); - - // Create a thread which will send us kSigno while we are blocked in - // sigtimedwait. - pid_t tid = gettid(); - ScopedThread sigthread([&] { - absl::SleepFor(kSigtimedwaitSetupTime); - EXPECT_THAT(tgkill(getpid(), tid, kSigno), SyscallSucceeds()); - }); - - // sigtimedwait should observe kSigno since it is normally masked, causing it - // to be enqueued despite being ignored. - struct timespec timeout_ts = absl::ToTimespec(kSigtimedwaitTimeout); - EXPECT_THAT(RetryEINTR(sigtimedwait)(&mask, nullptr, &timeout_ts), - SyscallSucceedsWithValue(kSigno)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor - -int main(int argc, char** argv) { - // These tests depend on delivering SIGALRM/SIGCHLD to the main thread or in - // sigtimedwait. Block them so that any other threads created by TestInit will - // also have them blocked. - sigset_t set; - sigemptyset(&set); - sigaddset(&set, SIGALRM); - sigaddset(&set, SIGCHLD); - TEST_PCHECK(sigprocmask(SIG_BLOCK, &set, nullptr) == 0); - - gvisor::testing::TestInit(&argc, &argv); - - return RUN_ALL_TESTS(); -} diff --git a/test/syscalls/linux/socket.cc b/test/syscalls/linux/socket.cc deleted file mode 100644 index 3a07ac8d2..000000000 --- a/test/syscalls/linux/socket.cc +++ /dev/null @@ -1,85 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <sys/socket.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -TEST(SocketTest, UnixSocketPairProtocol) { - int socks[2]; - ASSERT_THAT(socketpair(AF_UNIX, SOCK_STREAM, PF_UNIX, socks), - SyscallSucceeds()); - close(socks[0]); - close(socks[1]); -} - -TEST(SocketTest, ProtocolUnix) { - struct { - int domain, type, protocol; - } tests[] = { - {AF_UNIX, SOCK_STREAM, PF_UNIX}, - {AF_UNIX, SOCK_SEQPACKET, PF_UNIX}, - {AF_UNIX, SOCK_DGRAM, PF_UNIX}, - }; - for (int i = 0; i < ABSL_ARRAYSIZE(tests); i++) { - ASSERT_NO_ERRNO_AND_VALUE( - Socket(tests[i].domain, tests[i].type, tests[i].protocol)); - } -} - -TEST(SocketTest, ProtocolInet) { - struct { - int domain, type, protocol; - } tests[] = { - {AF_INET, SOCK_DGRAM, IPPROTO_UDP}, - {AF_INET, SOCK_STREAM, IPPROTO_TCP}, - }; - for (int i = 0; i < ABSL_ARRAYSIZE(tests); i++) { - ASSERT_NO_ERRNO_AND_VALUE( - Socket(tests[i].domain, tests[i].type, tests[i].protocol)); - } -} - -using SocketOpenTest = ::testing::TestWithParam<int>; - -// UDS cannot be opened. -TEST_P(SocketOpenTest, Unix) { - // FIXME(b/142001530): Open incorrectly succeeds on gVisor. - SKIP_IF(IsRunningOnGvisor()); - - FileDescriptor bound = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_UNIX, SOCK_STREAM, PF_UNIX)); - - struct sockaddr_un addr = - ASSERT_NO_ERRNO_AND_VALUE(UniqueUnixAddr(/*abstract=*/false, AF_UNIX)); - - ASSERT_THAT(bind(bound.get(), reinterpret_cast<struct sockaddr*>(&addr), - sizeof(addr)), - SyscallSucceeds()); - - EXPECT_THAT(open(addr.sun_path, GetParam()), SyscallFailsWithErrno(ENXIO)); -} - -INSTANTIATE_TEST_SUITE_P(OpenModes, SocketOpenTest, - ::testing::Values(O_RDONLY, O_RDWR)); - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_abstract.cc b/test/syscalls/linux/socket_abstract.cc deleted file mode 100644 index 00999f192..000000000 --- a/test/syscalls/linux/socket_abstract.cc +++ /dev/null @@ -1,49 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <vector> - -#include "test/syscalls/linux/socket_generic.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/socket_unix.h" -#include "test/syscalls/linux/socket_unix_cmsg.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -std::vector<SocketPairKind> GetSocketPairs() { - return ApplyVec<SocketPairKind>( - AbstractBoundUnixDomainSocketPair, - AllBitwiseCombinations(List<int>{SOCK_STREAM, SOCK_DGRAM, SOCK_SEQPACKET}, - List<int>{0, SOCK_NONBLOCK})); -} - -INSTANTIATE_TEST_SUITE_P( - AbstractUnixSockets, AllSocketPairTest, - ::testing::ValuesIn(IncludeReversals(GetSocketPairs()))); - -INSTANTIATE_TEST_SUITE_P( - AbstractUnixSockets, UnixSocketPairTest, - ::testing::ValuesIn(IncludeReversals(GetSocketPairs()))); - -INSTANTIATE_TEST_SUITE_P( - AbstractUnixSockets, UnixSocketPairCmsgTest, - ::testing::ValuesIn(IncludeReversals(GetSocketPairs()))); - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_bind_to_device.cc b/test/syscalls/linux/socket_bind_to_device.cc deleted file mode 100644 index 6b27f6eab..000000000 --- a/test/syscalls/linux/socket_bind_to_device.cc +++ /dev/null @@ -1,313 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <arpa/inet.h> -#include <linux/if_tun.h> -#include <net/if.h> -#include <netinet/in.h> -#include <sys/ioctl.h> -#include <sys/socket.h> -#include <sys/types.h> -#include <sys/un.h> - -#include <cstdio> -#include <cstring> -#include <map> -#include <memory> -#include <unordered_map> -#include <unordered_set> -#include <utility> -#include <vector> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "test/syscalls/linux/ip_socket_test_util.h" -#include "test/syscalls/linux/socket_bind_to_device_util.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/util/capability_util.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { - -using std::string; - -// Test fixture for SO_BINDTODEVICE tests. -class BindToDeviceTest : public ::testing::TestWithParam<SocketKind> { - protected: - void SetUp() override { - printf("Testing case: %s\n", GetParam().description.c_str()); - ASSERT_TRUE(ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))) - << "CAP_NET_RAW is required to use SO_BINDTODEVICE"; - - interface_name_ = "eth1"; - auto interface_names = GetInterfaceNames(); - if (interface_names.find(interface_name_) == interface_names.end()) { - // Need a tunnel. - tunnel_ = ASSERT_NO_ERRNO_AND_VALUE(Tunnel::New()); - interface_name_ = tunnel_->GetName(); - ASSERT_FALSE(interface_name_.empty()); - } - socket_ = ASSERT_NO_ERRNO_AND_VALUE(GetParam().Create()); - } - - string interface_name() const { return interface_name_; } - - int socket_fd() const { return socket_->get(); } - - private: - std::unique_ptr<Tunnel> tunnel_; - string interface_name_; - std::unique_ptr<FileDescriptor> socket_; -}; - -constexpr char kIllegalIfnameChar = '/'; - -// Tests getsockopt of the default value. -TEST_P(BindToDeviceTest, GetsockoptDefault) { - char name_buffer[IFNAMSIZ * 2]; - char original_name_buffer[IFNAMSIZ * 2]; - socklen_t name_buffer_size; - - // Read the default SO_BINDTODEVICE. - memset(original_name_buffer, kIllegalIfnameChar, sizeof(name_buffer)); - for (size_t i = 0; i <= sizeof(name_buffer); i++) { - memset(name_buffer, kIllegalIfnameChar, sizeof(name_buffer)); - name_buffer_size = i; - EXPECT_THAT(getsockopt(socket_fd(), SOL_SOCKET, SO_BINDTODEVICE, - name_buffer, &name_buffer_size), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(name_buffer_size, 0); - EXPECT_EQ(memcmp(name_buffer, original_name_buffer, sizeof(name_buffer)), - 0); - } -} - -// Tests setsockopt of invalid device name. -TEST_P(BindToDeviceTest, SetsockoptInvalidDeviceName) { - char name_buffer[IFNAMSIZ * 2]; - socklen_t name_buffer_size; - - // Set an invalid device name. - memset(name_buffer, kIllegalIfnameChar, 5); - name_buffer_size = 5; - EXPECT_THAT(setsockopt(socket_fd(), SOL_SOCKET, SO_BINDTODEVICE, name_buffer, - name_buffer_size), - SyscallFailsWithErrno(ENODEV)); -} - -// Tests setsockopt of a buffer with a valid device name but not -// null-terminated, with different sizes of buffer. -TEST_P(BindToDeviceTest, SetsockoptValidDeviceNameWithoutNullTermination) { - char name_buffer[IFNAMSIZ * 2]; - socklen_t name_buffer_size; - - strncpy(name_buffer, interface_name().c_str(), interface_name().size() + 1); - // Intentionally overwrite the null at the end. - memset(name_buffer + interface_name().size(), kIllegalIfnameChar, - sizeof(name_buffer) - interface_name().size()); - for (size_t i = 1; i <= sizeof(name_buffer); i++) { - name_buffer_size = i; - SCOPED_TRACE(absl::StrCat("Buffer size: ", i)); - // It should only work if the size provided is exactly right. - if (name_buffer_size == interface_name().size()) { - EXPECT_THAT(setsockopt(socket_fd(), SOL_SOCKET, SO_BINDTODEVICE, - name_buffer, name_buffer_size), - SyscallSucceeds()); - } else { - EXPECT_THAT(setsockopt(socket_fd(), SOL_SOCKET, SO_BINDTODEVICE, - name_buffer, name_buffer_size), - SyscallFailsWithErrno(ENODEV)); - } - } -} - -// Tests setsockopt of a buffer with a valid device name and null-terminated, -// with different sizes of buffer. -TEST_P(BindToDeviceTest, SetsockoptValidDeviceNameWithNullTermination) { - char name_buffer[IFNAMSIZ * 2]; - socklen_t name_buffer_size; - - strncpy(name_buffer, interface_name().c_str(), interface_name().size() + 1); - // Don't overwrite the null at the end. - memset(name_buffer + interface_name().size() + 1, kIllegalIfnameChar, - sizeof(name_buffer) - interface_name().size() - 1); - for (size_t i = 1; i <= sizeof(name_buffer); i++) { - name_buffer_size = i; - SCOPED_TRACE(absl::StrCat("Buffer size: ", i)); - // It should only work if the size provided is at least the right size. - if (name_buffer_size >= interface_name().size()) { - EXPECT_THAT(setsockopt(socket_fd(), SOL_SOCKET, SO_BINDTODEVICE, - name_buffer, name_buffer_size), - SyscallSucceeds()); - } else { - EXPECT_THAT(setsockopt(socket_fd(), SOL_SOCKET, SO_BINDTODEVICE, - name_buffer, name_buffer_size), - SyscallFailsWithErrno(ENODEV)); - } - } -} - -// Tests that setsockopt of an invalid device name doesn't unset the previous -// valid setsockopt. -TEST_P(BindToDeviceTest, SetsockoptValidThenInvalid) { - char name_buffer[IFNAMSIZ * 2]; - socklen_t name_buffer_size; - - // Write successfully. - strncpy(name_buffer, interface_name().c_str(), sizeof(name_buffer)); - ASSERT_THAT(setsockopt(socket_fd(), SOL_SOCKET, SO_BINDTODEVICE, name_buffer, - sizeof(name_buffer)), - SyscallSucceeds()); - - // Read it back successfully. - memset(name_buffer, kIllegalIfnameChar, sizeof(name_buffer)); - name_buffer_size = sizeof(name_buffer); - EXPECT_THAT(getsockopt(socket_fd(), SOL_SOCKET, SO_BINDTODEVICE, name_buffer, - &name_buffer_size), - SyscallSucceeds()); - EXPECT_EQ(name_buffer_size, interface_name().size() + 1); - EXPECT_STREQ(name_buffer, interface_name().c_str()); - - // Write unsuccessfully. - memset(name_buffer, kIllegalIfnameChar, sizeof(name_buffer)); - name_buffer_size = 5; - EXPECT_THAT(setsockopt(socket_fd(), SOL_SOCKET, SO_BINDTODEVICE, name_buffer, - sizeof(name_buffer)), - SyscallFailsWithErrno(ENODEV)); - - // Read it back successfully, it's unchanged. - memset(name_buffer, kIllegalIfnameChar, sizeof(name_buffer)); - name_buffer_size = sizeof(name_buffer); - EXPECT_THAT(getsockopt(socket_fd(), SOL_SOCKET, SO_BINDTODEVICE, name_buffer, - &name_buffer_size), - SyscallSucceeds()); - EXPECT_EQ(name_buffer_size, interface_name().size() + 1); - EXPECT_STREQ(name_buffer, interface_name().c_str()); -} - -// Tests that setsockopt of zero-length string correctly unsets the previous -// value. -TEST_P(BindToDeviceTest, SetsockoptValidThenClear) { - char name_buffer[IFNAMSIZ * 2]; - socklen_t name_buffer_size; - - // Write successfully. - strncpy(name_buffer, interface_name().c_str(), sizeof(name_buffer)); - EXPECT_THAT(setsockopt(socket_fd(), SOL_SOCKET, SO_BINDTODEVICE, name_buffer, - sizeof(name_buffer)), - SyscallSucceeds()); - - // Read it back successfully. - memset(name_buffer, kIllegalIfnameChar, sizeof(name_buffer)); - name_buffer_size = sizeof(name_buffer); - EXPECT_THAT(getsockopt(socket_fd(), SOL_SOCKET, SO_BINDTODEVICE, name_buffer, - &name_buffer_size), - SyscallSucceeds()); - EXPECT_EQ(name_buffer_size, interface_name().size() + 1); - EXPECT_STREQ(name_buffer, interface_name().c_str()); - - // Clear it successfully. - name_buffer_size = 0; - EXPECT_THAT(setsockopt(socket_fd(), SOL_SOCKET, SO_BINDTODEVICE, name_buffer, - name_buffer_size), - SyscallSucceeds()); - - // Read it back successfully, it's cleared. - memset(name_buffer, kIllegalIfnameChar, sizeof(name_buffer)); - name_buffer_size = sizeof(name_buffer); - EXPECT_THAT(getsockopt(socket_fd(), SOL_SOCKET, SO_BINDTODEVICE, name_buffer, - &name_buffer_size), - SyscallSucceeds()); - EXPECT_EQ(name_buffer_size, 0); -} - -// Tests that setsockopt of empty string correctly unsets the previous -// value. -TEST_P(BindToDeviceTest, SetsockoptValidThenClearWithNull) { - char name_buffer[IFNAMSIZ * 2]; - socklen_t name_buffer_size; - - // Write successfully. - strncpy(name_buffer, interface_name().c_str(), sizeof(name_buffer)); - EXPECT_THAT(setsockopt(socket_fd(), SOL_SOCKET, SO_BINDTODEVICE, name_buffer, - sizeof(name_buffer)), - SyscallSucceeds()); - - // Read it back successfully. - memset(name_buffer, kIllegalIfnameChar, sizeof(name_buffer)); - name_buffer_size = sizeof(name_buffer); - EXPECT_THAT(getsockopt(socket_fd(), SOL_SOCKET, SO_BINDTODEVICE, name_buffer, - &name_buffer_size), - SyscallSucceeds()); - EXPECT_EQ(name_buffer_size, interface_name().size() + 1); - EXPECT_STREQ(name_buffer, interface_name().c_str()); - - // Clear it successfully. - memset(name_buffer, kIllegalIfnameChar, sizeof(name_buffer)); - name_buffer[0] = 0; - name_buffer_size = sizeof(name_buffer); - EXPECT_THAT(setsockopt(socket_fd(), SOL_SOCKET, SO_BINDTODEVICE, name_buffer, - name_buffer_size), - SyscallSucceeds()); - - // Read it back successfully, it's cleared. - memset(name_buffer, kIllegalIfnameChar, sizeof(name_buffer)); - name_buffer_size = sizeof(name_buffer); - EXPECT_THAT(getsockopt(socket_fd(), SOL_SOCKET, SO_BINDTODEVICE, name_buffer, - &name_buffer_size), - SyscallSucceeds()); - EXPECT_EQ(name_buffer_size, 0); -} - -// Tests getsockopt with different buffer sizes. -TEST_P(BindToDeviceTest, GetsockoptDevice) { - char name_buffer[IFNAMSIZ * 2]; - socklen_t name_buffer_size; - - // Write successfully. - strncpy(name_buffer, interface_name().c_str(), sizeof(name_buffer)); - ASSERT_THAT(setsockopt(socket_fd(), SOL_SOCKET, SO_BINDTODEVICE, name_buffer, - sizeof(name_buffer)), - SyscallSucceeds()); - - // Read it back at various buffer sizes. - for (size_t i = 0; i <= sizeof(name_buffer); i++) { - memset(name_buffer, kIllegalIfnameChar, sizeof(name_buffer)); - name_buffer_size = i; - SCOPED_TRACE(absl::StrCat("Buffer size: ", i)); - // Linux only allows a buffer at least IFNAMSIZ, even if less would suffice - // for this interface name. - if (name_buffer_size >= IFNAMSIZ) { - EXPECT_THAT(getsockopt(socket_fd(), SOL_SOCKET, SO_BINDTODEVICE, - name_buffer, &name_buffer_size), - SyscallSucceeds()); - EXPECT_EQ(name_buffer_size, interface_name().size() + 1); - EXPECT_STREQ(name_buffer, interface_name().c_str()); - } else { - EXPECT_THAT(getsockopt(socket_fd(), SOL_SOCKET, SO_BINDTODEVICE, - name_buffer, &name_buffer_size), - SyscallFailsWithErrno(EINVAL)); - EXPECT_EQ(name_buffer_size, i); - } - } -} - -INSTANTIATE_TEST_SUITE_P(BindToDeviceTest, BindToDeviceTest, - ::testing::Values(IPv4UDPUnboundSocket(0), - IPv4TCPUnboundSocket(0))); - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_bind_to_device_distribution.cc b/test/syscalls/linux/socket_bind_to_device_distribution.cc deleted file mode 100644 index 5ed57625c..000000000 --- a/test/syscalls/linux/socket_bind_to_device_distribution.cc +++ /dev/null @@ -1,401 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <arpa/inet.h> -#include <linux/if_tun.h> -#include <net/if.h> -#include <netinet/in.h> -#include <sys/ioctl.h> -#include <sys/socket.h> -#include <sys/types.h> -#include <sys/un.h> - -#include <atomic> -#include <cstdio> -#include <cstring> -#include <map> -#include <memory> -#include <unordered_map> -#include <unordered_set> -#include <utility> -#include <vector> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "test/syscalls/linux/ip_socket_test_util.h" -#include "test/syscalls/linux/socket_bind_to_device_util.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/util/capability_util.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { - -using std::string; -using std::vector; - -struct EndpointConfig { - std::string bind_to_device; - double expected_ratio; -}; - -struct DistributionTestCase { - std::string name; - std::vector<EndpointConfig> endpoints; -}; - -struct ListenerConnector { - TestAddress listener; - TestAddress connector; -}; - -// Test fixture for SO_BINDTODEVICE tests the distribution of packets received -// with varying SO_BINDTODEVICE settings. -class BindToDeviceDistributionTest - : public ::testing::TestWithParam< - ::testing::tuple<ListenerConnector, DistributionTestCase>> { - protected: - void SetUp() override { - printf("Testing case: %s, listener=%s, connector=%s\n", - ::testing::get<1>(GetParam()).name.c_str(), - ::testing::get<0>(GetParam()).listener.description.c_str(), - ::testing::get<0>(GetParam()).connector.description.c_str()); - ASSERT_TRUE(ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))) - << "CAP_NET_RAW is required to use SO_BINDTODEVICE"; - } -}; - -PosixErrorOr<uint16_t> AddrPort(int family, sockaddr_storage const& addr) { - switch (family) { - case AF_INET: - return static_cast<uint16_t>( - reinterpret_cast<sockaddr_in const*>(&addr)->sin_port); - case AF_INET6: - return static_cast<uint16_t>( - reinterpret_cast<sockaddr_in6 const*>(&addr)->sin6_port); - default: - return PosixError(EINVAL, - absl::StrCat("unknown socket family: ", family)); - } -} - -PosixError SetAddrPort(int family, sockaddr_storage* addr, uint16_t port) { - switch (family) { - case AF_INET: - reinterpret_cast<sockaddr_in*>(addr)->sin_port = port; - return NoError(); - case AF_INET6: - reinterpret_cast<sockaddr_in6*>(addr)->sin6_port = port; - return NoError(); - default: - return PosixError(EINVAL, - absl::StrCat("unknown socket family: ", family)); - } -} - -// Binds sockets to different devices and then creates many TCP connections. -// Checks that the distribution of connections received on the sockets matches -// the expectation. -TEST_P(BindToDeviceDistributionTest, Tcp) { - auto const& [listener_connector, test] = GetParam(); - - TestAddress const& listener = listener_connector.listener; - TestAddress const& connector = listener_connector.connector; - sockaddr_storage listen_addr = listener.addr; - sockaddr_storage conn_addr = connector.addr; - - auto interface_names = GetInterfaceNames(); - - // Create the listening sockets. - std::vector<FileDescriptor> listener_fds; - std::vector<std::unique_ptr<Tunnel>> all_tunnels; - for (auto const& endpoint : test.endpoints) { - if (!endpoint.bind_to_device.empty() && - interface_names.find(endpoint.bind_to_device) == - interface_names.end()) { - all_tunnels.push_back( - ASSERT_NO_ERRNO_AND_VALUE(Tunnel::New(endpoint.bind_to_device))); - interface_names.insert(endpoint.bind_to_device); - } - - listener_fds.push_back(ASSERT_NO_ERRNO_AND_VALUE( - Socket(listener.family(), SOCK_STREAM, IPPROTO_TCP))); - int fd = listener_fds.back().get(); - - ASSERT_THAT(setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - ASSERT_THAT(setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, - endpoint.bind_to_device.c_str(), - endpoint.bind_to_device.size() + 1), - SyscallSucceeds()); - ASSERT_THAT( - bind(fd, reinterpret_cast<sockaddr*>(&listen_addr), listener.addr_len), - SyscallSucceeds()); - ASSERT_THAT(listen(fd, 40), SyscallSucceeds()); - - // On the first bind we need to determine which port was bound. - if (listener_fds.size() > 1) { - continue; - } - - // Get the port bound by the listening socket. - socklen_t addrlen = listener.addr_len; - ASSERT_THAT( - getsockname(listener_fds[0].get(), - reinterpret_cast<sockaddr*>(&listen_addr), &addrlen), - SyscallSucceeds()); - uint16_t const port = - ASSERT_NO_ERRNO_AND_VALUE(AddrPort(listener.family(), listen_addr)); - ASSERT_NO_ERRNO(SetAddrPort(connector.family(), &conn_addr, port)); - } - - constexpr int kConnectAttempts = 10000; - std::atomic<int> connects_received = ATOMIC_VAR_INIT(0); - std::vector<int> accept_counts(listener_fds.size(), 0); - std::vector<std::unique_ptr<ScopedThread>> listen_threads( - listener_fds.size()); - - for (int i = 0; i < listener_fds.size(); i++) { - listen_threads[i] = absl::make_unique<ScopedThread>( - [&listener_fds, &accept_counts, &connects_received, i, - kConnectAttempts]() { - do { - auto fd = Accept(listener_fds[i].get(), nullptr, nullptr); - if (!fd.ok()) { - // Another thread has shutdown our read side causing the accept to - // fail. - ASSERT_GE(connects_received, kConnectAttempts) - << "errno = " << fd.error(); - return; - } - // Receive some data from a socket to be sure that the connect() - // system call has been completed on another side. - // Do a short read and then close the socket to trigger a RST. This - // ensures that both ends of the connection are cleaned up and no - // goroutines hang around in TIME-WAIT. We do this so that this test - // does not timeout under gotsan runs where lots of goroutines can - // cause the test to use absurd amounts of memory. - // - // See: https://tools.ietf.org/html/rfc2525#page-50 section 2.17 - uint16_t data; - EXPECT_THAT( - RetryEINTR(recv)(fd.ValueOrDie().get(), &data, sizeof(data), 0), - SyscallSucceedsWithValue(sizeof(data))); - accept_counts[i]++; - } while (++connects_received < kConnectAttempts); - - // Shutdown all sockets to wake up other threads. - for (auto const& listener_fd : listener_fds) { - shutdown(listener_fd.get(), SHUT_RDWR); - } - }); - } - - for (int i = 0; i < kConnectAttempts; i++) { - const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE( - Socket(connector.family(), SOCK_STREAM, IPPROTO_TCP)); - ASSERT_THAT( - RetryEINTR(connect)(fd.get(), reinterpret_cast<sockaddr*>(&conn_addr), - connector.addr_len), - SyscallSucceeds()); - - // Do two separate sends to ensure two segments are received. This is - // required for netstack where read is incorrectly assuming a whole - // segment is read when endpoint.Read() is called which is technically - // incorrect as the syscall that invoked endpoint.Read() may only - // consume it partially. This results in a case where a close() of - // such a socket does not trigger a RST in netstack due to the - // endpoint assuming that the endpoint has no unread data. - EXPECT_THAT(RetryEINTR(send)(fd.get(), &i, sizeof(i), 0), - SyscallSucceedsWithValue(sizeof(i))); - - // TODO(gvisor.dev/issue/1449): Remove this block once netstack correctly - // generates a RST. - if (IsRunningOnGvisor()) { - EXPECT_THAT(RetryEINTR(send)(fd.get(), &i, sizeof(i), 0), - SyscallSucceedsWithValue(sizeof(i))); - } - } - - // Join threads to be sure that all connections have been counted. - for (auto const& listen_thread : listen_threads) { - listen_thread->Join(); - } - // Check that connections are distributed correctly among listening sockets. - for (int i = 0; i < accept_counts.size(); i++) { - EXPECT_THAT( - accept_counts[i], - EquivalentWithin(static_cast<int>(kConnectAttempts * - test.endpoints[i].expected_ratio), - 0.10)) - << "endpoint " << i << " got the wrong number of packets"; - } -} - -// Binds sockets to different devices and then sends many UDP packets. Checks -// that the distribution of packets received on the sockets matches the -// expectation. -TEST_P(BindToDeviceDistributionTest, Udp) { - auto const& [listener_connector, test] = GetParam(); - - TestAddress const& listener = listener_connector.listener; - TestAddress const& connector = listener_connector.connector; - sockaddr_storage listen_addr = listener.addr; - sockaddr_storage conn_addr = connector.addr; - - auto interface_names = GetInterfaceNames(); - - // Create the listening socket. - std::vector<FileDescriptor> listener_fds; - std::vector<std::unique_ptr<Tunnel>> all_tunnels; - for (auto const& endpoint : test.endpoints) { - if (!endpoint.bind_to_device.empty() && - interface_names.find(endpoint.bind_to_device) == - interface_names.end()) { - all_tunnels.push_back( - ASSERT_NO_ERRNO_AND_VALUE(Tunnel::New(endpoint.bind_to_device))); - interface_names.insert(endpoint.bind_to_device); - } - - listener_fds.push_back( - ASSERT_NO_ERRNO_AND_VALUE(Socket(listener.family(), SOCK_DGRAM, 0))); - int fd = listener_fds.back().get(); - - ASSERT_THAT(setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - ASSERT_THAT(setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE, - endpoint.bind_to_device.c_str(), - endpoint.bind_to_device.size() + 1), - SyscallSucceeds()); - ASSERT_THAT( - bind(fd, reinterpret_cast<sockaddr*>(&listen_addr), listener.addr_len), - SyscallSucceeds()); - - // On the first bind we need to determine which port was bound. - if (listener_fds.size() > 1) { - continue; - } - - // Get the port bound by the listening socket. - socklen_t addrlen = listener.addr_len; - ASSERT_THAT( - getsockname(listener_fds[0].get(), - reinterpret_cast<sockaddr*>(&listen_addr), &addrlen), - SyscallSucceeds()); - uint16_t const port = - ASSERT_NO_ERRNO_AND_VALUE(AddrPort(listener.family(), listen_addr)); - ASSERT_NO_ERRNO(SetAddrPort(listener.family(), &listen_addr, port)); - ASSERT_NO_ERRNO(SetAddrPort(connector.family(), &conn_addr, port)); - } - - constexpr int kConnectAttempts = 10000; - std::atomic<int> packets_received = ATOMIC_VAR_INIT(0); - std::vector<int> packets_per_socket(listener_fds.size(), 0); - std::vector<std::unique_ptr<ScopedThread>> receiver_threads( - listener_fds.size()); - - for (int i = 0; i < listener_fds.size(); i++) { - receiver_threads[i] = absl::make_unique<ScopedThread>( - [&listener_fds, &packets_per_socket, &packets_received, i]() { - do { - struct sockaddr_storage addr = {}; - socklen_t addrlen = sizeof(addr); - int data; - - auto ret = RetryEINTR(recvfrom)( - listener_fds[i].get(), &data, sizeof(data), 0, - reinterpret_cast<struct sockaddr*>(&addr), &addrlen); - - if (packets_received < kConnectAttempts) { - ASSERT_THAT(ret, SyscallSucceedsWithValue(sizeof(data))); - } - - if (ret != sizeof(data)) { - // Another thread may have shutdown our read side causing the - // recvfrom to fail. - break; - } - - packets_received++; - packets_per_socket[i]++; - - // A response is required to synchronize with the main thread, - // otherwise the main thread can send more than can fit into receive - // queues. - EXPECT_THAT(RetryEINTR(sendto)( - listener_fds[i].get(), &data, sizeof(data), 0, - reinterpret_cast<sockaddr*>(&addr), addrlen), - SyscallSucceedsWithValue(sizeof(data))); - } while (packets_received < kConnectAttempts); - - // Shutdown all sockets to wake up other threads. - for (auto const& listener_fd : listener_fds) { - shutdown(listener_fd.get(), SHUT_RDWR); - } - }); - } - - for (int i = 0; i < kConnectAttempts; i++) { - FileDescriptor const fd = - ASSERT_NO_ERRNO_AND_VALUE(Socket(connector.family(), SOCK_DGRAM, 0)); - EXPECT_THAT(RetryEINTR(sendto)(fd.get(), &i, sizeof(i), 0, - reinterpret_cast<sockaddr*>(&conn_addr), - connector.addr_len), - SyscallSucceedsWithValue(sizeof(i))); - int data; - EXPECT_THAT(RetryEINTR(recv)(fd.get(), &data, sizeof(data), 0), - SyscallSucceedsWithValue(sizeof(data))); - } - - // Join threads to be sure that all connections have been counted. - for (auto const& receiver_thread : receiver_threads) { - receiver_thread->Join(); - } - // Check that packets are distributed correctly among listening sockets. - for (int i = 0; i < packets_per_socket.size(); i++) { - EXPECT_THAT( - packets_per_socket[i], - EquivalentWithin(static_cast<int>(kConnectAttempts * - test.endpoints[i].expected_ratio), - 0.10)) - << "endpoint " << i << " got the wrong number of packets"; - } -} - -std::vector<DistributionTestCase> GetDistributionTestCases() { - return std::vector<DistributionTestCase>{ - {"Even distribution among sockets not bound to device", - {{"", 1. / 3}, {"", 1. / 3}, {"", 1. / 3}}}, - {"Sockets bound to other interfaces get no packets", - {{"eth1", 0}, {"", 1. / 2}, {"", 1. / 2}}}, - {"Bound has priority over unbound", {{"eth1", 0}, {"", 0}, {"lo", 1}}}, - {"Even distribution among sockets bound to device", - {{"eth1", 0}, {"lo", 1. / 2}, {"lo", 1. / 2}}}, - }; -} - -INSTANTIATE_TEST_SUITE_P( - BindToDeviceTest, BindToDeviceDistributionTest, - ::testing::Combine(::testing::Values( - // Listeners bound to IPv4 addresses refuse - // connections using IPv6 addresses. - ListenerConnector{V4Any(), V4Loopback()}, - ListenerConnector{V4Loopback(), V4MappedLoopback()}), - ::testing::ValuesIn(GetDistributionTestCases()))); - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_bind_to_device_sequence.cc b/test/syscalls/linux/socket_bind_to_device_sequence.cc deleted file mode 100644 index 637d1151a..000000000 --- a/test/syscalls/linux/socket_bind_to_device_sequence.cc +++ /dev/null @@ -1,511 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <arpa/inet.h> -#include <linux/capability.h> -#include <linux/if_tun.h> -#include <net/if.h> -#include <netinet/in.h> -#include <sys/ioctl.h> -#include <sys/socket.h> -#include <sys/types.h> -#include <sys/un.h> - -#include <cstdio> -#include <cstring> -#include <map> -#include <memory> -#include <unordered_map> -#include <unordered_set> -#include <utility> -#include <vector> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "test/syscalls/linux/ip_socket_test_util.h" -#include "test/syscalls/linux/socket_bind_to_device_util.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/util/capability_util.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { - -using std::string; -using std::vector; - -// Test fixture for SO_BINDTODEVICE tests the results of sequences of socket -// binding. -class BindToDeviceSequenceTest : public ::testing::TestWithParam<SocketKind> { - protected: - void SetUp() override { - printf("Testing case: %s\n", GetParam().description.c_str()); - ASSERT_TRUE(ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_RAW))) - << "CAP_NET_RAW is required to use SO_BINDTODEVICE"; - socket_factory_ = GetParam(); - - interface_names_ = GetInterfaceNames(); - } - - PosixErrorOr<std::unique_ptr<FileDescriptor>> NewSocket() const { - return socket_factory_.Create(); - } - - // Gets a device by device_id. If the device_id has been seen before, returns - // the previously returned device. If not, finds or creates a new device. - // Returns an empty string on failure. - void GetDevice(int device_id, string* device_name) { - auto device = devices_.find(device_id); - if (device != devices_.end()) { - *device_name = device->second; - return; - } - - // Need to pick a new device. Try ethernet first. - *device_name = absl::StrCat("eth", next_unused_eth_); - if (interface_names_.find(*device_name) != interface_names_.end()) { - devices_[device_id] = *device_name; - next_unused_eth_++; - return; - } - - // Need to make a new tunnel device. gVisor tests should have enough - // ethernet devices to never reach here. - ASSERT_FALSE(IsRunningOnGvisor()); - // Need a tunnel. - tunnels_.push_back(ASSERT_NO_ERRNO_AND_VALUE(Tunnel::New())); - devices_[device_id] = tunnels_.back()->GetName(); - *device_name = devices_[device_id]; - } - - // Release the socket - void ReleaseSocket(int socket_id) { - // Close the socket that was made in a previous action. The socket_id - // indicates which socket to close based on index into the list of actions. - sockets_to_close_.erase(socket_id); - } - - // SetDevice changes the bind_to_device option. It does not bind or re-bind. - void SetDevice(int socket_id, int device_id) { - auto socket_fd = sockets_to_close_[socket_id]->get(); - string device_name; - ASSERT_NO_FATAL_FAILURE(GetDevice(device_id, &device_name)); - EXPECT_THAT(setsockopt(socket_fd, SOL_SOCKET, SO_BINDTODEVICE, - device_name.c_str(), device_name.size() + 1), - SyscallSucceedsWithValue(0)); - } - - // Bind a socket with the reuse options and bind_to_device options. Checks - // that all steps succeed and that the bind command's error matches want. - // Sets the socket_id to uniquely identify the socket bound if it is not - // nullptr. - void BindSocket(bool reuse_port, bool reuse_addr, int device_id = 0, - int want = 0, int* socket_id = nullptr) { - next_socket_id_++; - sockets_to_close_[next_socket_id_] = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket_fd = sockets_to_close_[next_socket_id_]->get(); - if (socket_id != nullptr) { - *socket_id = next_socket_id_; - } - - // If reuse_port is indicated, do that. - if (reuse_port) { - EXPECT_THAT(setsockopt(socket_fd, SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceedsWithValue(0)); - } - - // If reuse_addr is indicated, do that. - if (reuse_addr) { - EXPECT_THAT(setsockopt(socket_fd, SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceedsWithValue(0)); - } - - // If the device is non-zero, bind to that device. - if (device_id != 0) { - string device_name; - ASSERT_NO_FATAL_FAILURE(GetDevice(device_id, &device_name)); - EXPECT_THAT(setsockopt(socket_fd, SOL_SOCKET, SO_BINDTODEVICE, - device_name.c_str(), device_name.size() + 1), - SyscallSucceedsWithValue(0)); - char get_device[100]; - socklen_t get_device_size = 100; - EXPECT_THAT(getsockopt(socket_fd, SOL_SOCKET, SO_BINDTODEVICE, get_device, - &get_device_size), - SyscallSucceedsWithValue(0)); - } - - struct sockaddr_in addr = {}; - addr.sin_family = AF_INET; - addr.sin_addr.s_addr = htonl(INADDR_LOOPBACK); - addr.sin_port = port_; - if (want == 0) { - ASSERT_THAT( - bind(socket_fd, reinterpret_cast<const struct sockaddr*>(&addr), - sizeof(addr)), - SyscallSucceeds()); - } else { - ASSERT_THAT( - bind(socket_fd, reinterpret_cast<const struct sockaddr*>(&addr), - sizeof(addr)), - SyscallFailsWithErrno(want)); - } - - if (port_ == 0) { - // We don't yet know what port we'll be using so we need to fetch it and - // remember it for future commands. - socklen_t addr_size = sizeof(addr); - ASSERT_THAT( - getsockname(socket_fd, reinterpret_cast<struct sockaddr*>(&addr), - &addr_size), - SyscallSucceeds()); - port_ = addr.sin_port; - } - } - - private: - SocketKind socket_factory_; - // devices maps from the device id in the test case to the name of the device. - std::unordered_map<int, string> devices_; - // These are the tunnels that were created for the test and will be destroyed - // by the destructor. - vector<std::unique_ptr<Tunnel>> tunnels_; - // A list of all interface names before the test started. - std::unordered_set<string> interface_names_; - // The next ethernet device to use when requested a device. - int next_unused_eth_ = 1; - // The port for all tests. Originally 0 (any) and later set to the port that - // all further commands will use. - in_port_t port_ = 0; - // sockets_to_close_ is a map from action index to the socket that was - // created. - std::unordered_map<int, - std::unique_ptr<gvisor::testing::FileDescriptor>> - sockets_to_close_; - int next_socket_id_ = 0; -}; - -TEST_P(BindToDeviceSequenceTest, BindTwiceWithDeviceFails) { - ASSERT_NO_FATAL_FAILURE(BindSocket( - /* reuse_port */ false, /* reuse_addr */ false, /* bind_to_device */ 3)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, - /* reuse_addr */ false, - /* bind_to_device */ 3, EADDRINUSE)); -} - -TEST_P(BindToDeviceSequenceTest, BindToDevice) { - ASSERT_NO_FATAL_FAILURE(BindSocket( - /* reuse_port */ false, /* reuse_addr */ false, /* bind_to_device */ 1)); - ASSERT_NO_FATAL_FAILURE(BindSocket( - /* reuse_port */ false, /* reuse_addr */ false, /* bind_to_device */ 2)); -} - -TEST_P(BindToDeviceSequenceTest, BindToDeviceAndThenWithoutDevice) { - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, - /* reuse_addr */ false, - /* bind_to_device */ 123)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, - /* reuse_addr */ false, - /* bind_to_device */ 0, EADDRINUSE)); -} - -TEST_P(BindToDeviceSequenceTest, BindWithoutDevice) { - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, - /* reuse_addr */ false)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, - /* reuse_addr */ false, - /* bind_to_device */ 123, EADDRINUSE)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, - /* reuse_addr */ false, - /* bind_to_device */ 123, EADDRINUSE)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, - /* reuse_addr */ false, - /* bind_to_device */ 0, EADDRINUSE)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, - /* reuse_addr */ false, - /* bind_to_device */ 0, EADDRINUSE)); -} - -TEST_P(BindToDeviceSequenceTest, BindWithDevice) { - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, - /* reuse_addr */ false, - /* bind_to_device */ 123, 0)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, - /* reuse_addr */ false, - /* bind_to_device */ 123, EADDRINUSE)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, - /* reuse_addr */ false, - /* bind_to_device */ 123, EADDRINUSE)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, - /* reuse_addr */ false, - /* bind_to_device */ 0, EADDRINUSE)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, - /* reuse_addr */ false, - /* bind_to_device */ 0, EADDRINUSE)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, - /* reuse_addr */ false, - /* bind_to_device */ 456, 0)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, - /* reuse_addr */ false, - /* bind_to_device */ 789, 0)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, - /* reuse_addr */ false, - /* bind_to_device */ 0, EADDRINUSE)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, - /* reuse_addr */ false, - /* bind_to_device */ 0, EADDRINUSE)); -} - -TEST_P(BindToDeviceSequenceTest, BindWithReuse) { - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reusePort */ true, /* reuse_addr */ false)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, - /* reuse_addr */ false, - /* bind_to_device */ 123, EADDRINUSE)); - ASSERT_NO_FATAL_FAILURE(BindSocket( - /* reuse_port */ true, /* reuse_addr */ false, - /* bind_to_device */ 123)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, - /* reuse_addr */ false, - /* bind_to_device */ 0, EADDRINUSE)); - ASSERT_NO_FATAL_FAILURE(BindSocket( - /* reuse_port */ true, /* reuse_addr */ false, /* bind_to_device */ 0)); -} - -TEST_P(BindToDeviceSequenceTest, BindingWithReuseAndDevice) { - ASSERT_NO_FATAL_FAILURE(BindSocket( - /* reuse_port */ true, /* reuse_addr */ false, /* bind_to_device */ 123)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, - /* reuse_addr */ false, - /* bind_to_device */ 123, EADDRINUSE)); - ASSERT_NO_FATAL_FAILURE(BindSocket( - /* reuse_port */ true, /* reuse_addr */ false, /* bind_to_device */ 123)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, - /* reuse_addr */ false, - /* bind_to_device */ 0, EADDRINUSE)); - ASSERT_NO_FATAL_FAILURE(BindSocket( - /* reuse_port */ true, /* reuse_addr */ false, /* bind_to_device */ 456)); - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reuse_port */ true, /* reuse_addr */ false)); - ASSERT_NO_FATAL_FAILURE(BindSocket( - /* reuse_port */ true, /* reuse_addr */ false, /* bind_to_device */ 789)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, - /* reuse_addr */ false, - /* bind_to_device */ 999, EADDRINUSE)); -} - -TEST_P(BindToDeviceSequenceTest, MixingReuseAndNotReuseByBindingToDevice) { - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, - /* reuse_addr */ false, - /* bind_to_device */ 123, 0)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, - /* reuse_addr */ false, - /* bind_to_device */ 456, 0)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, - /* reuse_addr */ false, - /* bind_to_device */ 789, 0)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, - /* reuse_addr */ false, - /* bind_to_device */ 999, 0)); -} - -TEST_P(BindToDeviceSequenceTest, CannotBindTo0AfterMixingReuseAndNotReuse) { - ASSERT_NO_FATAL_FAILURE(BindSocket( - /* reuse_port */ true, /* reuse_addr */ false, /* bind_to_device */ 123)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, - /* reuse_addr */ false, - /* bind_to_device */ 456)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, - /* reuse_addr */ false, - /* bind_to_device */ 0, EADDRINUSE)); -} - -TEST_P(BindToDeviceSequenceTest, BindAndRelease) { - ASSERT_NO_FATAL_FAILURE(BindSocket( - /* reuse_port */ true, /* reuse_addr */ false, /* bind_to_device */ 123)); - int to_release; - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, - /* reuse_addr */ false, - /* bind_to_device */ 0, 0, &to_release)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, - /* reuse_addr */ false, - /* bind_to_device */ 345, EADDRINUSE)); - ASSERT_NO_FATAL_FAILURE(BindSocket( - /* reuse_port */ true, /* reuse_addr */ false, /* bind_to_device */ 789)); - // Release the bind to device 0 and try again. - ASSERT_NO_FATAL_FAILURE(ReleaseSocket(to_release)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, - /* reuse_addr */ false, - /* bind_to_device */ 345)); -} - -TEST_P(BindToDeviceSequenceTest, BindTwiceWithReuseOnce) { - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, - /* reuse_addr */ false, - /* bind_to_device */ 123)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, - /* reuse_addr */ false, - /* bind_to_device */ 0, EADDRINUSE)); -} - -TEST_P(BindToDeviceSequenceTest, BindWithReuseAddr) { - // FIXME(b/129164367): Support SO_REUSEADDR on UDP sockets. - SKIP_IF(IsRunningOnGvisor()); - - ASSERT_NO_FATAL_FAILURE( - BindSocket(/* reusePort */ false, /* reuse_addr */ true)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, - /* reuse_addr */ false, - /* bind_to_device */ 123, EADDRINUSE)); - ASSERT_NO_FATAL_FAILURE(BindSocket( - /* reuse_port */ false, /* reuse_addr */ true, /* bind_to_device */ 123)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, - /* reuse_addr */ false, - /* bind_to_device */ 0, EADDRINUSE)); - ASSERT_NO_FATAL_FAILURE(BindSocket( - /* reuse_port */ false, /* reuse_addr */ true, /* bind_to_device */ 0)); -} - -TEST_P(BindToDeviceSequenceTest, - CannotBindTo0AfterMixingReuseAddrAndNotReuseAddr) { - ASSERT_NO_FATAL_FAILURE(BindSocket( - /* reuse_port */ true, /* reuse_addr */ false, /* bind_to_device */ 123)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, - /* reuse_addr */ false, - /* bind_to_device */ 456)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, - /* reuse_addr */ true, - /* bind_to_device */ 0, EADDRINUSE)); -} - -TEST_P(BindToDeviceSequenceTest, BindReuseAddrReusePortThenReusePort) { - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, - /* reuse_addr */ true, - /* bind_to_device */ 0)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, - /* reuse_addr */ false, - /* bind_to_device */ 0)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, - /* reuse_addr */ true, - /* bind_to_device */ 0, EADDRINUSE)); -} - -TEST_P(BindToDeviceSequenceTest, BindReuseAddrReusePortThenReuseAddr) { - // FIXME(b/129164367): Support SO_REUSEADDR on UDP sockets. - SKIP_IF(IsRunningOnGvisor()); - - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, - /* reuse_addr */ true, - /* bind_to_device */ 0)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, - /* reuse_addr */ true, - /* bind_to_device */ 0)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, - /* reuse_addr */ false, - /* bind_to_device */ 0, EADDRINUSE)); -} - -TEST_P(BindToDeviceSequenceTest, BindDoubleReuseAddrReusePortThenReusePort) { - ASSERT_NO_FATAL_FAILURE(BindSocket( - /* reuse_port */ true, /* reuse_addr */ true, /* bind_to_device */ 0)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, - /* reuse_addr */ true, - /* bind_to_device */ 0)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, - /* reuse_addr */ false, - /* bind_to_device */ 0)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, - /* reuse_addr */ true, - /* bind_to_device */ 0, EADDRINUSE)); -} - -TEST_P(BindToDeviceSequenceTest, BindDoubleReuseAddrReusePortThenReuseAddr) { - // FIXME(b/129164367): Support SO_REUSEADDR on UDP sockets. - SKIP_IF(IsRunningOnGvisor()); - - ASSERT_NO_FATAL_FAILURE(BindSocket( - /* reuse_port */ true, /* reuse_addr */ true, /* bind_to_device */ 0)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, - /* reuse_addr */ true, - /* bind_to_device */ 0)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, - /* reuse_addr */ true, - /* bind_to_device */ 0)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, - /* reuse_addr */ false, - /* bind_to_device */ 0, EADDRINUSE)); -} - -TEST_P(BindToDeviceSequenceTest, BindReusePortThenReuseAddrReusePort) { - ASSERT_NO_FATAL_FAILURE(BindSocket( - /* reuse_port */ true, /* reuse_addr */ false, /* bind_to_device */ 0)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, - /* reuse_addr */ true, - /* bind_to_device */ 0)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, - /* reuse_addr */ true, - /* bind_to_device */ 0, EADDRINUSE)); -} - -TEST_P(BindToDeviceSequenceTest, BindReuseAddrThenReuseAddr) { - ASSERT_NO_FATAL_FAILURE(BindSocket( - /* reuse_port */ false, /* reuse_addr */ true, /* bind_to_device */ 0)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, - /* reuse_addr */ false, - /* bind_to_device */ 0, EADDRINUSE)); -} - -// This behavior seems like a bug? -TEST_P(BindToDeviceSequenceTest, - BindReuseAddrThenReuseAddrReusePortThenReuseAddr) { - // FIXME(b/129164367): Support SO_REUSEADDR on UDP sockets. - SKIP_IF(IsRunningOnGvisor()); - - ASSERT_NO_FATAL_FAILURE(BindSocket( - /* reuse_port */ false, /* reuse_addr */ true, /* bind_to_device */ 0)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, - /* reuse_addr */ true, - /* bind_to_device */ 0)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ true, - /* reuse_addr */ false, - /* bind_to_device */ 0)); -} - -// Repro test for gvisor.dev/issue/1217. Not replicated in ports_test.go as this -// test is different from the others and wouldn't fit well there. -TEST_P(BindToDeviceSequenceTest, BindAndReleaseDifferentDevice) { - int to_release; - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, - /* reuse_addr */ false, - /* bind_to_device */ 3, 0, &to_release)); - ASSERT_NO_FATAL_FAILURE(BindSocket(/* reuse_port */ false, - /* reuse_addr */ false, - /* bind_to_device */ 3, EADDRINUSE)); - // Change the device. Since the socket was already bound, this should have no - // effect. - SetDevice(to_release, 2); - // Release the bind to device 3 and try again. - ASSERT_NO_FATAL_FAILURE(ReleaseSocket(to_release)); - ASSERT_NO_FATAL_FAILURE(BindSocket( - /* reuse_port */ false, /* reuse_addr */ false, /* bind_to_device */ 3)); -} - -INSTANTIATE_TEST_SUITE_P(BindToDeviceTest, BindToDeviceSequenceTest, - ::testing::Values(IPv4UDPUnboundSocket(0), - IPv4TCPUnboundSocket(0))); - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_bind_to_device_util.cc b/test/syscalls/linux/socket_bind_to_device_util.cc deleted file mode 100644 index f4ee775bd..000000000 --- a/test/syscalls/linux/socket_bind_to_device_util.cc +++ /dev/null @@ -1,75 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/syscalls/linux/socket_bind_to_device_util.h" - -#include <arpa/inet.h> -#include <fcntl.h> -#include <linux/if_tun.h> -#include <net/if.h> -#include <netinet/in.h> -#include <sys/ioctl.h> -#include <sys/socket.h> -#include <sys/types.h> -#include <sys/un.h> -#include <unistd.h> - -#include <cstdio> -#include <cstring> -#include <map> -#include <memory> -#include <unordered_map> -#include <unordered_set> -#include <utility> -#include <vector> - -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -using std::string; - -PosixErrorOr<std::unique_ptr<Tunnel>> Tunnel::New(string tunnel_name) { - int fd; - RETURN_ERROR_IF_SYSCALL_FAIL(fd = open("/dev/net/tun", O_RDWR)); - - // Using `new` to access a non-public constructor. - auto new_tunnel = absl::WrapUnique(new Tunnel(fd)); - - ifreq ifr = {}; - ifr.ifr_flags = IFF_TUN; - strncpy(ifr.ifr_name, tunnel_name.c_str(), sizeof(ifr.ifr_name)); - - RETURN_ERROR_IF_SYSCALL_FAIL(ioctl(fd, TUNSETIFF, &ifr)); - new_tunnel->name_ = ifr.ifr_name; - return new_tunnel; -} - -std::unordered_set<string> GetInterfaceNames() { - struct if_nameindex* interfaces = if_nameindex(); - std::unordered_set<string> names; - if (interfaces == nullptr) { - return names; - } - for (auto interface = interfaces; - interface->if_index != 0 || interface->if_name != nullptr; interface++) { - names.insert(interface->if_name); - } - if_freenameindex(interfaces); - return names; -} - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_bind_to_device_util.h b/test/syscalls/linux/socket_bind_to_device_util.h deleted file mode 100644 index f941ccc86..000000000 --- a/test/syscalls/linux/socket_bind_to_device_util.h +++ /dev/null @@ -1,67 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_SYSCALLS_SOCKET_BIND_TO_DEVICE_UTILS_H_ -#define GVISOR_TEST_SYSCALLS_SOCKET_BIND_TO_DEVICE_UTILS_H_ - -#include <arpa/inet.h> -#include <linux/if_tun.h> -#include <net/if.h> -#include <netinet/in.h> -#include <sys/ioctl.h> -#include <sys/socket.h> -#include <sys/types.h> -#include <sys/un.h> -#include <unistd.h> - -#include <cstdio> -#include <cstring> -#include <map> -#include <memory> -#include <string> -#include <unordered_map> -#include <unordered_set> -#include <utility> -#include <vector> - -#include "absl/memory/memory.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -class Tunnel { - public: - static PosixErrorOr<std::unique_ptr<Tunnel>> New( - std::string tunnel_name = ""); - const std::string& GetName() const { return name_; } - - ~Tunnel() { - if (fd_ != -1) { - close(fd_); - } - } - - private: - Tunnel(int fd) : fd_(fd) {} - int fd_ = -1; - std::string name_; -}; - -std::unordered_set<std::string> GetInterfaceNames(); - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_SYSCALLS_SOCKET_BIND_TO_DEVICE_UTILS_H_ diff --git a/test/syscalls/linux/socket_blocking.cc b/test/syscalls/linux/socket_blocking.cc deleted file mode 100644 index 7e88aa2d9..000000000 --- a/test/syscalls/linux/socket_blocking.cc +++ /dev/null @@ -1,60 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/syscalls/linux/socket_blocking.h" - -#include <sys/socket.h> -#include <sys/types.h> -#include <sys/un.h> - -#include <cstdio> - -#include "gtest/gtest.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" -#include "test/util/timer_util.h" - -namespace gvisor { -namespace testing { - -TEST_P(BlockingSocketPairTest, RecvBlocks) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[100]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - constexpr auto kDuration = absl::Milliseconds(200); - auto before = Now(CLOCK_MONOTONIC); - - const ScopedThread t([&]() { - absl::SleepFor(kDuration); - ASSERT_THAT(write(sockets->first_fd(), sent_data, sizeof(sent_data)), - SyscallSucceedsWithValue(sizeof(sent_data))); - }); - - char received_data[sizeof(sent_data)] = {}; - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), received_data, - sizeof(received_data), 0), - SyscallSucceedsWithValue(sizeof(received_data))); - - auto after = Now(CLOCK_MONOTONIC); - EXPECT_GE(after - before, kDuration); -} - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_blocking.h b/test/syscalls/linux/socket_blocking.h deleted file mode 100644 index db26e5ef5..000000000 --- a/test/syscalls/linux/socket_blocking.h +++ /dev/null @@ -1,29 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_SYSCALLS_LINUX_SOCKET_BLOCKING_H_ -#define GVISOR_TEST_SYSCALLS_LINUX_SOCKET_BLOCKING_H_ - -#include "test/syscalls/linux/socket_test_util.h" - -namespace gvisor { -namespace testing { - -// Test fixture for tests that apply to pairs of blocking connected sockets. -using BlockingSocketPairTest = SocketPairTest; - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_SYSCALLS_LINUX_SOCKET_BLOCKING_H_ diff --git a/test/syscalls/linux/socket_filesystem.cc b/test/syscalls/linux/socket_filesystem.cc deleted file mode 100644 index 287359363..000000000 --- a/test/syscalls/linux/socket_filesystem.cc +++ /dev/null @@ -1,49 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <vector> - -#include "test/syscalls/linux/socket_generic.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/socket_unix.h" -#include "test/syscalls/linux/socket_unix_cmsg.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -std::vector<SocketPairKind> GetSocketPairs() { - return ApplyVec<SocketPairKind>( - FilesystemBoundUnixDomainSocketPair, - AllBitwiseCombinations(List<int>{SOCK_STREAM, SOCK_DGRAM, SOCK_SEQPACKET}, - List<int>{0, SOCK_NONBLOCK})); -} - -INSTANTIATE_TEST_SUITE_P( - FilesystemUnixSockets, AllSocketPairTest, - ::testing::ValuesIn(IncludeReversals(GetSocketPairs()))); - -INSTANTIATE_TEST_SUITE_P( - FilesystemUnixSockets, UnixSocketPairTest, - ::testing::ValuesIn(IncludeReversals(GetSocketPairs()))); - -INSTANTIATE_TEST_SUITE_P( - FilesystemUnixSockets, UnixSocketPairCmsgTest, - ::testing::ValuesIn(IncludeReversals(GetSocketPairs()))); - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_generic.cc b/test/syscalls/linux/socket_generic.cc deleted file mode 100644 index e8f24a59e..000000000 --- a/test/syscalls/linux/socket_generic.cc +++ /dev/null @@ -1,740 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/syscalls/linux/socket_generic.h" - -#include <stdio.h> -#include <sys/ioctl.h> -#include <sys/socket.h> -#include <sys/un.h> - -#include "gtest/gtest.h" -#include "absl/strings/str_format.h" -#include "absl/strings/string_view.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" - -// This file is a generic socket test file. It must be built with another file -// that provides the test types. - -namespace gvisor { -namespace testing { - -TEST_P(AllSocketPairTest, BasicReadWrite) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - char buf[20]; - const std::string data = "abc"; - ASSERT_THAT(WriteFd(sockets->first_fd(), data.c_str(), 3), - SyscallSucceedsWithValue(3)); - ASSERT_THAT(ReadFd(sockets->second_fd(), buf, 3), - SyscallSucceedsWithValue(3)); - EXPECT_EQ(data, absl::string_view(buf, 3)); -} - -TEST_P(AllSocketPairTest, BasicSendRecv) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - char sent_data[512]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - ASSERT_THAT( - RetryEINTR(send)(sockets->first_fd(), sent_data, sizeof(sent_data), 0), - SyscallSucceedsWithValue(sizeof(sent_data))); - char received_data[sizeof(sent_data)]; - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), received_data, - sizeof(received_data), 0), - SyscallSucceedsWithValue(sizeof(received_data))); - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); -} - -TEST_P(AllSocketPairTest, BasicSendmmsg) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - char sent_data[200]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - std::vector<struct mmsghdr> msgs(10); - std::vector<struct iovec> iovs(msgs.size()); - const int chunk_size = sizeof(sent_data) / msgs.size(); - for (size_t i = 0; i < msgs.size(); i++) { - iovs[i].iov_len = chunk_size; - iovs[i].iov_base = &sent_data[i * chunk_size]; - msgs[i].msg_hdr.msg_iov = &iovs[i]; - msgs[i].msg_hdr.msg_iovlen = 1; - } - - ASSERT_THAT( - RetryEINTR(sendmmsg)(sockets->first_fd(), &msgs[0], msgs.size(), 0), - SyscallSucceedsWithValue(msgs.size())); - - for (const struct mmsghdr& msg : msgs) { - EXPECT_EQ(chunk_size, msg.msg_len); - } - - char received_data[sizeof(sent_data)]; - for (size_t i = 0; i < msgs.size(); i++) { - ASSERT_THAT(ReadFd(sockets->second_fd(), &received_data[i * chunk_size], - chunk_size), - SyscallSucceedsWithValue(chunk_size)); - } - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); -} - -TEST_P(AllSocketPairTest, BasicRecvmmsg) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - char sent_data[200]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - char received_data[sizeof(sent_data)]; - std::vector<struct mmsghdr> msgs(10); - std::vector<struct iovec> iovs(msgs.size()); - const int chunk_size = sizeof(sent_data) / msgs.size(); - for (size_t i = 0; i < msgs.size(); i++) { - iovs[i].iov_len = chunk_size; - iovs[i].iov_base = &received_data[i * chunk_size]; - msgs[i].msg_hdr.msg_iov = &iovs[i]; - msgs[i].msg_hdr.msg_iovlen = 1; - } - - for (size_t i = 0; i < msgs.size(); i++) { - ASSERT_THAT( - WriteFd(sockets->first_fd(), &sent_data[i * chunk_size], chunk_size), - SyscallSucceedsWithValue(chunk_size)); - } - - ASSERT_THAT(RetryEINTR(recvmmsg)(sockets->second_fd(), &msgs[0], msgs.size(), - 0, nullptr), - SyscallSucceedsWithValue(msgs.size())); - - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); - - for (const struct mmsghdr& msg : msgs) { - EXPECT_EQ(chunk_size, msg.msg_len); - } -} - -TEST_P(AllSocketPairTest, SendmsgRecvmsg10KB) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - std::vector<char> sent_data(10 * 1024); - RandomizeBuffer(sent_data.data(), sent_data.size()); - ASSERT_NO_FATAL_FAILURE( - SendNullCmsg(sockets->first_fd(), sent_data.data(), sent_data.size())); - - std::vector<char> received_data(sent_data.size()); - ASSERT_NO_FATAL_FAILURE(RecvNoCmsg(sockets->second_fd(), received_data.data(), - received_data.size())); - - EXPECT_EQ(0, - memcmp(sent_data.data(), received_data.data(), sent_data.size())); -} - -// This test validates that a sendmsg/recvmsg w/ MSG_CTRUNC is a no-op on -// input flags. -TEST_P(AllSocketPairTest, SendmsgRecvmsgMsgCtruncNoop) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - std::vector<char> sent_data(10 * 1024); - RandomizeBuffer(sent_data.data(), sent_data.size()); - ASSERT_NO_FATAL_FAILURE( - SendNullCmsg(sockets->first_fd(), sent_data.data(), sent_data.size())); - - std::vector<char> received_data(sent_data.size()); - struct msghdr msg = {}; - char control[CMSG_SPACE(sizeof(int)) + CMSG_SPACE(sizeof(struct ucred))]; - msg.msg_control = control; - msg.msg_controllen = sizeof(control); - - struct iovec iov; - iov.iov_base = &received_data[0]; - iov.iov_len = received_data.size(); - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - // MSG_CTRUNC should be a no-op. - ASSERT_THAT(RetryEINTR(recvmsg)(sockets->second_fd(), &msg, MSG_CTRUNC), - SyscallSucceedsWithValue(received_data.size())); - struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg); - EXPECT_EQ(cmsg, nullptr); - EXPECT_EQ(msg.msg_controllen, 0); - EXPECT_EQ(0, - memcmp(sent_data.data(), received_data.data(), sent_data.size())); -} - -TEST_P(AllSocketPairTest, SendmsgRecvmsg16KB) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - std::vector<char> sent_data(16 * 1024); - RandomizeBuffer(sent_data.data(), sent_data.size()); - ASSERT_NO_FATAL_FAILURE( - SendNullCmsg(sockets->first_fd(), sent_data.data(), sent_data.size())); - - std::vector<char> received_data(sent_data.size()); - ASSERT_NO_FATAL_FAILURE(RecvNoCmsg(sockets->second_fd(), received_data.data(), - received_data.size())); - - EXPECT_EQ(0, - memcmp(sent_data.data(), received_data.data(), sent_data.size())); -} - -TEST_P(AllSocketPairTest, RecvmsgMsghdrFlagsNotClearedOnFailure) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char received_data[10] = {}; - - struct iovec iov; - iov.iov_base = received_data; - iov.iov_len = sizeof(received_data); - struct msghdr msg = {}; - msg.msg_flags = -1; - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - ASSERT_THAT(RetryEINTR(recvmsg)(sockets->second_fd(), &msg, MSG_DONTWAIT), - SyscallFailsWithErrno(EAGAIN)); - - // Check that msghdr flags were not changed. - EXPECT_EQ(msg.msg_flags, -1); -} - -TEST_P(AllSocketPairTest, RecvmsgMsghdrFlagsCleared) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[10]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - ASSERT_THAT( - RetryEINTR(send)(sockets->first_fd(), sent_data, sizeof(sent_data), 0), - SyscallSucceedsWithValue(sizeof(sent_data))); - - char received_data[sizeof(sent_data)] = {}; - - struct iovec iov; - iov.iov_base = received_data; - iov.iov_len = sizeof(received_data); - struct msghdr msg = {}; - msg.msg_flags = -1; - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - ASSERT_THAT(RetryEINTR(recvmsg)(sockets->second_fd(), &msg, 0), - SyscallSucceedsWithValue(sizeof(sent_data))); - EXPECT_EQ(0, memcmp(received_data, sent_data, sizeof(sent_data))); - - // Check that msghdr flags were cleared. - EXPECT_EQ(msg.msg_flags, 0); -} - -TEST_P(AllSocketPairTest, RecvmsgPeekMsghdrFlagsCleared) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[10]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - ASSERT_THAT( - RetryEINTR(send)(sockets->first_fd(), sent_data, sizeof(sent_data), 0), - SyscallSucceedsWithValue(sizeof(sent_data))); - - char received_data[sizeof(sent_data)] = {}; - - struct iovec iov; - iov.iov_base = received_data; - iov.iov_len = sizeof(received_data); - struct msghdr msg = {}; - msg.msg_flags = -1; - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - ASSERT_THAT(RetryEINTR(recvmsg)(sockets->second_fd(), &msg, MSG_PEEK), - SyscallSucceedsWithValue(sizeof(sent_data))); - EXPECT_EQ(0, memcmp(received_data, sent_data, sizeof(sent_data))); - - // Check that msghdr flags were cleared. - EXPECT_EQ(msg.msg_flags, 0); -} - -TEST_P(AllSocketPairTest, RecvmsgIovNotUpdated) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[10]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - ASSERT_THAT( - RetryEINTR(send)(sockets->first_fd(), sent_data, sizeof(sent_data), 0), - SyscallSucceedsWithValue(sizeof(sent_data))); - - char received_data[sizeof(sent_data) * 2] = {}; - - struct iovec iov; - iov.iov_base = received_data; - iov.iov_len = sizeof(received_data); - struct msghdr msg = {}; - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - ASSERT_THAT(RetryEINTR(recvmsg)(sockets->second_fd(), &msg, 0), - SyscallSucceedsWithValue(sizeof(sent_data))); - EXPECT_EQ(0, memcmp(received_data, sent_data, sizeof(sent_data))); - - // Check that the iovec length was not updated. - EXPECT_EQ(msg.msg_iov->iov_len, sizeof(received_data)); -} - -TEST_P(AllSocketPairTest, RecvmmsgInvalidTimeout) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - char buf[10]; - struct mmsghdr msg = {}; - struct iovec iov = {}; - iov.iov_len = sizeof(buf); - iov.iov_base = buf; - msg.msg_hdr.msg_iov = &iov; - msg.msg_hdr.msg_iovlen = 1; - struct timespec timeout = {-1, -1}; - ASSERT_THAT(RetryEINTR(recvmmsg)(sockets->first_fd(), &msg, 1, 0, &timeout), - SyscallFailsWithErrno(EINVAL)); -} - -TEST_P(AllSocketPairTest, RecvmmsgTimeoutBeforeRecv) { - // There is a known bug in the Linux recvmmsg(2) causing it to block forever - // if the timeout expires while blocking for the first message. - SKIP_IF(!IsRunningOnGvisor()); - - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - char buf[10]; - struct mmsghdr msg = {}; - struct iovec iov = {}; - iov.iov_len = sizeof(buf); - iov.iov_base = buf; - msg.msg_hdr.msg_iov = &iov; - msg.msg_hdr.msg_iovlen = 1; - struct timespec timeout = {}; - ASSERT_THAT(RetryEINTR(recvmmsg)(sockets->first_fd(), &msg, 1, 0, &timeout), - SyscallFailsWithErrno(EAGAIN)); -} - -TEST_P(AllSocketPairTest, MsgPeek) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - char sent_data[50]; - memset(&sent_data, 0, sizeof(sent_data)); - ASSERT_THAT(WriteFd(sockets->first_fd(), sent_data, sizeof(sent_data)), - SyscallSucceedsWithValue(sizeof(sent_data))); - - char received_data[sizeof(sent_data)]; - for (int i = 0; i < 3; i++) { - memset(received_data, 0, sizeof(received_data)); - EXPECT_THAT(RetryEINTR(recv)(sockets->second_fd(), received_data, - sizeof(received_data), MSG_PEEK), - SyscallSucceedsWithValue(sizeof(received_data))); - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(received_data))); - } - - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), received_data, - sizeof(received_data), 0), - SyscallSucceedsWithValue(sizeof(received_data))); - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(received_data))); -} - -TEST_P(AllSocketPairTest, LingerSocketOption) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - struct linger got_linger = {-1, -1}; - socklen_t length = sizeof(struct linger); - EXPECT_THAT(getsockopt(sockets->first_fd(), SOL_SOCKET, SO_LINGER, - &got_linger, &length), - SyscallSucceedsWithValue(0)); - struct linger want_linger = {}; - EXPECT_EQ(0, memcmp(&want_linger, &got_linger, sizeof(struct linger))); - EXPECT_EQ(sizeof(struct linger), length); -} - -TEST_P(AllSocketPairTest, KeepAliveSocketOption) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - int keepalive = -1; - socklen_t length = sizeof(int); - EXPECT_THAT(getsockopt(sockets->first_fd(), SOL_SOCKET, SO_KEEPALIVE, - &keepalive, &length), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(0, keepalive); - EXPECT_EQ(sizeof(int), length); -} - -TEST_P(AllSocketPairTest, RcvBufSucceeds) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - int size = 0; - socklen_t size_size = sizeof(size); - EXPECT_THAT( - getsockopt(sockets->first_fd(), SOL_SOCKET, SO_RCVBUF, &size, &size_size), - SyscallSucceeds()); - EXPECT_GT(size, 0); -} - -TEST_P(AllSocketPairTest, SndBufSucceeds) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - int size = 0; - socklen_t size_size = sizeof(size); - EXPECT_THAT( - getsockopt(sockets->first_fd(), SOL_SOCKET, SO_SNDBUF, &size, &size_size), - SyscallSucceeds()); - EXPECT_GT(size, 0); -} - -TEST_P(AllSocketPairTest, RecvTimeoutReadSucceeds) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - struct timeval tv { - .tv_sec = 0, .tv_usec = 10 - }; - EXPECT_THAT( - setsockopt(sockets->first_fd(), SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)), - SyscallSucceeds()); - - char buf[20] = {}; - EXPECT_THAT(RetryEINTR(read)(sockets->first_fd(), buf, sizeof(buf)), - SyscallFailsWithErrno(EAGAIN)); -} - -TEST_P(AllSocketPairTest, RecvTimeoutRecvSucceeds) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - struct timeval tv { - .tv_sec = 0, .tv_usec = 10 - }; - EXPECT_THAT( - setsockopt(sockets->first_fd(), SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)), - SyscallSucceeds()); - - char buf[20] = {}; - EXPECT_THAT(RetryEINTR(recv)(sockets->first_fd(), buf, sizeof(buf), 0), - SyscallFailsWithErrno(EAGAIN)); -} - -TEST_P(AllSocketPairTest, RecvTimeoutRecvOneSecondSucceeds) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - struct timeval tv { - .tv_sec = 1, .tv_usec = 0 - }; - EXPECT_THAT( - setsockopt(sockets->first_fd(), SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)), - SyscallSucceeds()); - - char buf[20] = {}; - EXPECT_THAT(RetryEINTR(recv)(sockets->first_fd(), buf, sizeof(buf), 0), - SyscallFailsWithErrno(EAGAIN)); -} - -TEST_P(AllSocketPairTest, RecvTimeoutRecvmsgSucceeds) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - struct timeval tv { - .tv_sec = 0, .tv_usec = 10 - }; - EXPECT_THAT( - setsockopt(sockets->first_fd(), SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)), - SyscallSucceeds()); - - struct msghdr msg = {}; - char buf[20] = {}; - struct iovec iov; - iov.iov_base = buf; - iov.iov_len = sizeof(buf); - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - EXPECT_THAT(RetryEINTR(recvmsg)(sockets->first_fd(), &msg, 0), - SyscallFailsWithErrno(EAGAIN)); -} - -TEST_P(AllSocketPairTest, SendTimeoutAllowsWrite) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - struct timeval tv { - .tv_sec = 0, .tv_usec = 10 - }; - EXPECT_THAT( - setsockopt(sockets->first_fd(), SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv)), - SyscallSucceeds()); - - char buf[20] = {}; - ASSERT_THAT(RetryEINTR(write)(sockets->first_fd(), buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); -} - -TEST_P(AllSocketPairTest, SendTimeoutAllowsSend) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - struct timeval tv { - .tv_sec = 0, .tv_usec = 10 - }; - EXPECT_THAT( - setsockopt(sockets->first_fd(), SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv)), - SyscallSucceeds()); - - char buf[20] = {}; - ASSERT_THAT(RetryEINTR(send)(sockets->first_fd(), buf, sizeof(buf), 0), - SyscallSucceedsWithValue(sizeof(buf))); -} - -TEST_P(AllSocketPairTest, SendTimeoutAllowsSendmsg) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - struct timeval tv { - .tv_sec = 0, .tv_usec = 10 - }; - EXPECT_THAT( - setsockopt(sockets->first_fd(), SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv)), - SyscallSucceeds()); - - char buf[20] = {}; - ASSERT_NO_FATAL_FAILURE(SendNullCmsg(sockets->first_fd(), buf, sizeof(buf))); -} - -TEST_P(AllSocketPairTest, SoRcvTimeoIsSet) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - struct timeval tv { - .tv_sec = 0, .tv_usec = 35 - }; - EXPECT_THAT( - setsockopt(sockets->first_fd(), SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)), - SyscallSucceeds()); -} - -TEST_P(AllSocketPairTest, SoRcvTimeoIsSetLargerArg) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - struct timeval_with_extra { - struct timeval tv; - int64_t extra_data; - } ABSL_ATTRIBUTE_PACKED; - - timeval_with_extra tv_extra; - tv_extra.tv.tv_sec = 0; - tv_extra.tv.tv_usec = 25; - - EXPECT_THAT(setsockopt(sockets->first_fd(), SOL_SOCKET, SO_RCVTIMEO, - &tv_extra, sizeof(tv_extra)), - SyscallSucceeds()); -} - -TEST_P(AllSocketPairTest, RecvTimeoutRecvmsgOneSecondSucceeds) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - struct timeval tv { - .tv_sec = 1, .tv_usec = 0 - }; - EXPECT_THAT( - setsockopt(sockets->first_fd(), SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)), - SyscallSucceeds()); - - struct msghdr msg = {}; - char buf[20] = {}; - struct iovec iov; - iov.iov_base = buf; - iov.iov_len = sizeof(buf); - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - EXPECT_THAT(RetryEINTR(recvmsg)(sockets->first_fd(), &msg, 0), - SyscallFailsWithErrno(EAGAIN)); -} - -TEST_P(AllSocketPairTest, RecvTimeoutUsecTooLarge) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - struct timeval tv { - .tv_sec = 0, .tv_usec = 2000000 // 2 seconds. - }; - EXPECT_THAT( - setsockopt(sockets->first_fd(), SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)), - SyscallFailsWithErrno(EDOM)); -} - -TEST_P(AllSocketPairTest, SendTimeoutUsecTooLarge) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - struct timeval tv { - .tv_sec = 0, .tv_usec = 2000000 // 2 seconds. - }; - EXPECT_THAT( - setsockopt(sockets->first_fd(), SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv)), - SyscallFailsWithErrno(EDOM)); -} - -TEST_P(AllSocketPairTest, RecvTimeoutUsecNeg) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - struct timeval tv { - .tv_sec = 0, .tv_usec = -1 - }; - EXPECT_THAT( - setsockopt(sockets->first_fd(), SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)), - SyscallFailsWithErrno(EDOM)); -} - -TEST_P(AllSocketPairTest, SendTimeoutUsecNeg) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - struct timeval tv { - .tv_sec = 0, .tv_usec = -1 - }; - EXPECT_THAT( - setsockopt(sockets->first_fd(), SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv)), - SyscallFailsWithErrno(EDOM)); -} - -TEST_P(AllSocketPairTest, RecvTimeoutNegSecRead) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - struct timeval tv { - .tv_sec = -1, .tv_usec = 0 - }; - EXPECT_THAT( - setsockopt(sockets->first_fd(), SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)), - SyscallSucceeds()); - - char buf[20] = {}; - EXPECT_THAT(RetryEINTR(read)(sockets->first_fd(), buf, sizeof(buf)), - SyscallFailsWithErrno(EAGAIN)); -} - -TEST_P(AllSocketPairTest, RecvTimeoutNegSecRecv) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - struct timeval tv { - .tv_sec = -1, .tv_usec = 0 - }; - EXPECT_THAT( - setsockopt(sockets->first_fd(), SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)), - SyscallSucceeds()); - - char buf[20] = {}; - EXPECT_THAT(RetryEINTR(recv)(sockets->first_fd(), buf, sizeof(buf), 0), - SyscallFailsWithErrno(EAGAIN)); -} - -TEST_P(AllSocketPairTest, RecvTimeoutNegSecRecvmsg) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - struct timeval tv { - .tv_sec = -1, .tv_usec = 0 - }; - EXPECT_THAT( - setsockopt(sockets->first_fd(), SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)), - SyscallSucceeds()); - - struct msghdr msg = {}; - char buf[20] = {}; - struct iovec iov; - iov.iov_base = buf; - iov.iov_len = sizeof(buf); - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - EXPECT_THAT(RetryEINTR(recvmsg)(sockets->first_fd(), &msg, 0), - SyscallFailsWithErrno(EAGAIN)); -} - -TEST_P(AllSocketPairTest, RecvWaitAll) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[100]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - ASSERT_THAT(write(sockets->first_fd(), sent_data, sizeof(sent_data)), - SyscallSucceedsWithValue(sizeof(sent_data))); - - char received_data[sizeof(sent_data)] = {}; - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), received_data, - sizeof(received_data), MSG_WAITALL), - SyscallSucceedsWithValue(sizeof(sent_data))); - - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); -} - -TEST_P(AllSocketPairTest, RecvWaitAllDontWait) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char data[100] = {}; - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), data, sizeof(data), - MSG_WAITALL | MSG_DONTWAIT), - SyscallFailsWithErrno(EAGAIN)); -} - -TEST_P(AllSocketPairTest, RecvTimeoutWaitAll) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - struct timeval tv { - .tv_sec = 0, .tv_usec = 200000 // 200ms - }; - EXPECT_THAT(setsockopt(sockets->second_fd(), SOL_SOCKET, SO_RCVTIMEO, &tv, - sizeof(tv)), - SyscallSucceeds()); - - char sent_data[100]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - ASSERT_THAT(write(sockets->first_fd(), sent_data, sizeof(sent_data)), - SyscallSucceedsWithValue(sizeof(sent_data))); - - char received_data[sizeof(sent_data) * 2] = {}; - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), received_data, - sizeof(received_data), MSG_WAITALL), - SyscallSucceedsWithValue(sizeof(sent_data))); - - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); -} - -TEST_P(AllSocketPairTest, GetSockoptType) { - int type = GetParam().type; - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - for (const int fd : {sockets->first_fd(), sockets->second_fd()}) { - int opt; - socklen_t optlen = sizeof(opt); - EXPECT_THAT(getsockopt(fd, SOL_SOCKET, SO_TYPE, &opt, &optlen), - SyscallSucceeds()); - - // Type may have SOCK_NONBLOCK and SOCK_CLOEXEC ORed into it. Remove these - // before comparison. - type &= ~(SOCK_NONBLOCK | SOCK_CLOEXEC); - EXPECT_EQ(opt, type) << absl::StrFormat( - "getsockopt(%d, SOL_SOCKET, SO_TYPE, &opt, &optlen) => opt=%d was " - "unexpected", - fd, opt); - } -} - -TEST_P(AllSocketPairTest, GetSockoptDomain) { - const int domain = GetParam().domain; - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - for (const int fd : {sockets->first_fd(), sockets->second_fd()}) { - int opt; - socklen_t optlen = sizeof(opt); - EXPECT_THAT(getsockopt(fd, SOL_SOCKET, SO_DOMAIN, &opt, &optlen), - SyscallSucceeds()); - EXPECT_EQ(opt, domain) << absl::StrFormat( - "getsockopt(%d, SOL_SOCKET, SO_DOMAIN, &opt, &optlen) => opt=%d was " - "unexpected", - fd, opt); - } -} - -TEST_P(AllSocketPairTest, GetSockoptProtocol) { - const int protocol = GetParam().protocol; - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - for (const int fd : {sockets->first_fd(), sockets->second_fd()}) { - int opt; - socklen_t optlen = sizeof(opt); - EXPECT_THAT(getsockopt(fd, SOL_SOCKET, SO_PROTOCOL, &opt, &optlen), - SyscallSucceeds()); - EXPECT_EQ(opt, protocol) << absl::StrFormat( - "getsockopt(%d, SOL_SOCKET, SO_PROTOCOL, &opt, &optlen) => opt=%d was " - "unexpected", - fd, opt); - } -} - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_generic.h b/test/syscalls/linux/socket_generic.h deleted file mode 100644 index 00ae7bfc3..000000000 --- a/test/syscalls/linux/socket_generic.h +++ /dev/null @@ -1,30 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_SYSCALLS_LINUX_SOCKET_GENERIC_H_ -#define GVISOR_TEST_SYSCALLS_LINUX_SOCKET_GENERIC_H_ - -#include "test/syscalls/linux/socket_test_util.h" - -namespace gvisor { -namespace testing { - -// Test fixture for tests that apply to pairs of blocking and non-blocking -// connected stream sockets. -using AllSocketPairTest = SocketPairTest; - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_SYSCALLS_LINUX_SOCKET_GENERIC_H_ diff --git a/test/syscalls/linux/socket_generic_stress.cc b/test/syscalls/linux/socket_generic_stress.cc deleted file mode 100644 index 6a232238d..000000000 --- a/test/syscalls/linux/socket_generic_stress.cc +++ /dev/null @@ -1,83 +0,0 @@ -// Copyright 2020 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <stdio.h> -#include <sys/ioctl.h> -#include <sys/socket.h> -#include <sys/un.h> - -#include "gtest/gtest.h" -#include "test/syscalls/linux/ip_socket_test_util.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -// Test fixture for tests that apply to pairs of connected sockets. -using ConnectStressTest = SocketPairTest; - -TEST_P(ConnectStressTest, Reset65kTimes) { - for (int i = 0; i < 1 << 16; ++i) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - // Send some data to ensure that the connection gets reset and the port gets - // released immediately. This avoids either end entering TIME-WAIT. - char sent_data[100] = {}; - ASSERT_THAT(write(sockets->first_fd(), sent_data, sizeof(sent_data)), - SyscallSucceedsWithValue(sizeof(sent_data))); - } -} - -INSTANTIATE_TEST_SUITE_P( - AllConnectedSockets, ConnectStressTest, - ::testing::Values(IPv6UDPBidirectionalBindSocketPair(0), - IPv4UDPBidirectionalBindSocketPair(0), - DualStackUDPBidirectionalBindSocketPair(0), - - // Without REUSEADDR, we get port exhaustion on Linux. - SetSockOpt(SOL_SOCKET, SO_REUSEADDR, - &kSockOptOn)(IPv6TCPAcceptBindSocketPair(0)), - SetSockOpt(SOL_SOCKET, SO_REUSEADDR, - &kSockOptOn)(IPv4TCPAcceptBindSocketPair(0)), - SetSockOpt(SOL_SOCKET, SO_REUSEADDR, &kSockOptOn)( - DualStackTCPAcceptBindSocketPair(0)))); - -// Test fixture for tests that apply to pairs of connected sockets created with -// a persistent listener (if applicable). -using PersistentListenerConnectStressTest = SocketPairTest; - -TEST_P(PersistentListenerConnectStressTest, 65kTimes) { - for (int i = 0; i < 1 << 16; ++i) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - } -} - -INSTANTIATE_TEST_SUITE_P( - AllConnectedSockets, PersistentListenerConnectStressTest, - ::testing::Values( - IPv6UDPBidirectionalBindSocketPair(0), - IPv4UDPBidirectionalBindSocketPair(0), - DualStackUDPBidirectionalBindSocketPair(0), - - // Without REUSEADDR, we get port exhaustion on Linux. - SetSockOpt(SOL_SOCKET, SO_REUSEADDR, &kSockOptOn)( - IPv6TCPAcceptBindPersistentListenerSocketPair(0)), - SetSockOpt(SOL_SOCKET, SO_REUSEADDR, &kSockOptOn)( - IPv4TCPAcceptBindPersistentListenerSocketPair(0)), - SetSockOpt(SOL_SOCKET, SO_REUSEADDR, &kSockOptOn)( - DualStackTCPAcceptBindPersistentListenerSocketPair(0)))); - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_inet_loopback.cc b/test/syscalls/linux/socket_inet_loopback.cc deleted file mode 100644 index b24618a88..000000000 --- a/test/syscalls/linux/socket_inet_loopback.cc +++ /dev/null @@ -1,2264 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <arpa/inet.h> -#include <netinet/in.h> -#include <netinet/tcp.h> -#include <poll.h> -#include <string.h> - -#include <atomic> -#include <iostream> -#include <memory> -#include <string> -#include <tuple> -#include <utility> -#include <vector> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "absl/memory/memory.h" -#include "absl/strings/str_cat.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/syscalls/linux/ip_socket_test_util.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/posix_error.h" -#include "test/util/save_util.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -using ::testing::Gt; - -PosixErrorOr<uint16_t> AddrPort(int family, sockaddr_storage const& addr) { - switch (family) { - case AF_INET: - return static_cast<uint16_t>( - reinterpret_cast<sockaddr_in const*>(&addr)->sin_port); - case AF_INET6: - return static_cast<uint16_t>( - reinterpret_cast<sockaddr_in6 const*>(&addr)->sin6_port); - default: - return PosixError(EINVAL, - absl::StrCat("unknown socket family: ", family)); - } -} - -PosixError SetAddrPort(int family, sockaddr_storage* addr, uint16_t port) { - switch (family) { - case AF_INET: - reinterpret_cast<sockaddr_in*>(addr)->sin_port = port; - return NoError(); - case AF_INET6: - reinterpret_cast<sockaddr_in6*>(addr)->sin6_port = port; - return NoError(); - default: - return PosixError(EINVAL, - absl::StrCat("unknown socket family: ", family)); - } -} - -struct TestParam { - TestAddress listener; - TestAddress connector; -}; - -std::string DescribeTestParam(::testing::TestParamInfo<TestParam> const& info) { - return absl::StrCat("Listen", info.param.listener.description, "_Connect", - info.param.connector.description); -} - -using SocketInetLoopbackTest = ::testing::TestWithParam<TestParam>; - -TEST(BadSocketPairArgs, ValidateErrForBadCallsToSocketPair) { - int fd[2] = {}; - - // Valid AF but invalid for socketpair(2) return ESOCKTNOSUPPORT. - ASSERT_THAT(socketpair(AF_INET, 0, 0, fd), - SyscallFailsWithErrno(ESOCKTNOSUPPORT)); - ASSERT_THAT(socketpair(AF_INET6, 0, 0, fd), - SyscallFailsWithErrno(ESOCKTNOSUPPORT)); - - // Invalid AF will return ENOAFSUPPORT. - ASSERT_THAT(socketpair(AF_MAX, 0, 0, fd), - SyscallFailsWithErrno(EAFNOSUPPORT)); - ASSERT_THAT(socketpair(8675309, 0, 0, fd), - SyscallFailsWithErrno(EAFNOSUPPORT)); -} - -enum class Operation { - Bind, - Connect, - SendTo, -}; - -std::string OperationToString(Operation operation) { - switch (operation) { - case Operation::Bind: - return "Bind"; - case Operation::Connect: - return "Connect"; - case Operation::SendTo: - return "SendTo"; - } -} - -using OperationSequence = std::vector<Operation>; - -using DualStackSocketTest = - ::testing::TestWithParam<std::tuple<TestAddress, OperationSequence>>; - -TEST_P(DualStackSocketTest, AddressOperations) { - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET6, SOCK_DGRAM, 0)); - - const TestAddress& addr = std::get<0>(GetParam()); - const OperationSequence& operations = std::get<1>(GetParam()); - - auto addr_in = reinterpret_cast<const sockaddr*>(&addr.addr); - - // sockets may only be bound once. Both `connect` and `sendto` cause a socket - // to be bound. - bool bound = false; - for (const Operation& operation : operations) { - bool sockname = false; - bool peername = false; - switch (operation) { - case Operation::Bind: { - ASSERT_NO_ERRNO(SetAddrPort( - addr.family(), const_cast<sockaddr_storage*>(&addr.addr), 0)); - - int bind_ret = bind(fd.get(), addr_in, addr.addr_len); - - // Dual stack sockets may only be bound to AF_INET6. - if (!bound && addr.family() == AF_INET6) { - EXPECT_THAT(bind_ret, SyscallSucceeds()); - bound = true; - - sockname = true; - } else { - EXPECT_THAT(bind_ret, SyscallFailsWithErrno(EINVAL)); - } - break; - } - case Operation::Connect: { - ASSERT_NO_ERRNO(SetAddrPort( - addr.family(), const_cast<sockaddr_storage*>(&addr.addr), 1337)); - - EXPECT_THAT(connect(fd.get(), addr_in, addr.addr_len), - SyscallSucceeds()) - << GetAddrStr(addr_in); - bound = true; - - sockname = true; - peername = true; - - break; - } - case Operation::SendTo: { - const char payload[] = "hello"; - ASSERT_NO_ERRNO(SetAddrPort( - addr.family(), const_cast<sockaddr_storage*>(&addr.addr), 1337)); - - ssize_t sendto_ret = sendto(fd.get(), &payload, sizeof(payload), 0, - addr_in, addr.addr_len); - - EXPECT_THAT(sendto_ret, SyscallSucceedsWithValue(sizeof(payload))); - sockname = !bound; - bound = true; - break; - } - } - - if (sockname) { - sockaddr_storage sock_addr; - socklen_t addrlen = sizeof(sock_addr); - ASSERT_THAT(getsockname(fd.get(), reinterpret_cast<sockaddr*>(&sock_addr), - &addrlen), - SyscallSucceeds()); - ASSERT_EQ(addrlen, sizeof(struct sockaddr_in6)); - - auto sock_addr_in6 = reinterpret_cast<const sockaddr_in6*>(&sock_addr); - - if (operation == Operation::SendTo) { - EXPECT_EQ(sock_addr_in6->sin6_family, AF_INET6); - EXPECT_TRUE(IN6_IS_ADDR_UNSPECIFIED(sock_addr_in6->sin6_addr.s6_addr32)) - << OperationToString(operation) << " getsocknam=" - << GetAddrStr(reinterpret_cast<sockaddr*>(&sock_addr)); - - EXPECT_NE(sock_addr_in6->sin6_port, 0); - } else if (IN6_IS_ADDR_V4MAPPED( - reinterpret_cast<const sockaddr_in6*>(addr_in) - ->sin6_addr.s6_addr32)) { - EXPECT_TRUE(IN6_IS_ADDR_V4MAPPED(sock_addr_in6->sin6_addr.s6_addr32)) - << OperationToString(operation) << " getsocknam=" - << GetAddrStr(reinterpret_cast<sockaddr*>(&sock_addr)); - } - } - - if (peername) { - sockaddr_storage peer_addr; - socklen_t addrlen = sizeof(peer_addr); - ASSERT_THAT(getpeername(fd.get(), reinterpret_cast<sockaddr*>(&peer_addr), - &addrlen), - SyscallSucceeds()); - ASSERT_EQ(addrlen, sizeof(struct sockaddr_in6)); - - if (addr.family() == AF_INET || - IN6_IS_ADDR_V4MAPPED(reinterpret_cast<const sockaddr_in6*>(addr_in) - ->sin6_addr.s6_addr32)) { - EXPECT_TRUE(IN6_IS_ADDR_V4MAPPED( - reinterpret_cast<const sockaddr_in6*>(&peer_addr) - ->sin6_addr.s6_addr32)) - << OperationToString(operation) << " getpeername=" - << GetAddrStr(reinterpret_cast<sockaddr*>(&peer_addr)); - } - } - } -} - -// TODO(gvisor.dev/issues/1556): uncomment V4MappedAny. -INSTANTIATE_TEST_SUITE_P( - All, DualStackSocketTest, - ::testing::Combine( - ::testing::Values(V4Any(), V4Loopback(), /*V4MappedAny(),*/ - V4MappedLoopback(), V6Any(), V6Loopback()), - ::testing::ValuesIn<OperationSequence>( - {{Operation::Bind, Operation::Connect, Operation::SendTo}, - {Operation::Bind, Operation::SendTo, Operation::Connect}, - {Operation::Connect, Operation::Bind, Operation::SendTo}, - {Operation::Connect, Operation::SendTo, Operation::Bind}, - {Operation::SendTo, Operation::Bind, Operation::Connect}, - {Operation::SendTo, Operation::Connect, Operation::Bind}})), - [](::testing::TestParamInfo< - std::tuple<TestAddress, OperationSequence>> const& info) { - const TestAddress& addr = std::get<0>(info.param); - const OperationSequence& operations = std::get<1>(info.param); - std::string s = addr.description; - for (const Operation& operation : operations) { - absl::StrAppend(&s, OperationToString(operation)); - } - return s; - }); - -void tcpSimpleConnectTest(TestAddress const& listener, - TestAddress const& connector, bool unbound) { - // Create the listening socket. - const FileDescriptor listen_fd = ASSERT_NO_ERRNO_AND_VALUE( - Socket(listener.family(), SOCK_STREAM, IPPROTO_TCP)); - sockaddr_storage listen_addr = listener.addr; - if (!unbound) { - ASSERT_THAT(bind(listen_fd.get(), reinterpret_cast<sockaddr*>(&listen_addr), - listener.addr_len), - SyscallSucceeds()); - } - ASSERT_THAT(listen(listen_fd.get(), SOMAXCONN), SyscallSucceeds()); - - // Get the port bound by the listening socket. - socklen_t addrlen = listener.addr_len; - ASSERT_THAT(getsockname(listen_fd.get(), - reinterpret_cast<sockaddr*>(&listen_addr), &addrlen), - SyscallSucceeds()); - uint16_t const port = - ASSERT_NO_ERRNO_AND_VALUE(AddrPort(listener.family(), listen_addr)); - - // Connect to the listening socket. - const FileDescriptor conn_fd = ASSERT_NO_ERRNO_AND_VALUE( - Socket(connector.family(), SOCK_STREAM, IPPROTO_TCP)); - sockaddr_storage conn_addr = connector.addr; - ASSERT_NO_ERRNO(SetAddrPort(connector.family(), &conn_addr, port)); - ASSERT_THAT(RetryEINTR(connect)(conn_fd.get(), - reinterpret_cast<sockaddr*>(&conn_addr), - connector.addr_len), - SyscallSucceeds()); - - // Accept the connection. - // - // We have to assign a name to the accepted socket, as unamed temporary - // objects are destructed upon full evaluation of the expression it is in, - // potentially causing the connecting socket to fail to shutdown properly. - auto accepted = - ASSERT_NO_ERRNO_AND_VALUE(Accept(listen_fd.get(), nullptr, nullptr)); - - ASSERT_THAT(shutdown(listen_fd.get(), SHUT_RDWR), SyscallSucceeds()); - - ASSERT_THAT(shutdown(conn_fd.get(), SHUT_RDWR), SyscallSucceeds()); -} - -TEST_P(SocketInetLoopbackTest, TCP) { - auto const& param = GetParam(); - TestAddress const& listener = param.listener; - TestAddress const& connector = param.connector; - - tcpSimpleConnectTest(listener, connector, true); -} - -TEST_P(SocketInetLoopbackTest, TCPListenUnbound) { - auto const& param = GetParam(); - - TestAddress const& listener = param.listener; - TestAddress const& connector = param.connector; - - tcpSimpleConnectTest(listener, connector, false); -} - -TEST_P(SocketInetLoopbackTest, TCPListenClose) { - auto const& param = GetParam(); - - TestAddress const& listener = param.listener; - TestAddress const& connector = param.connector; - - constexpr int kAcceptCount = 32; - constexpr int kBacklog = kAcceptCount * 2; - constexpr int kFDs = 128; - constexpr int kThreadCount = 4; - constexpr int kFDsPerThread = kFDs / kThreadCount; - - // Create the listening socket. - FileDescriptor listen_fd = ASSERT_NO_ERRNO_AND_VALUE( - Socket(listener.family(), SOCK_STREAM, IPPROTO_TCP)); - sockaddr_storage listen_addr = listener.addr; - ASSERT_THAT(bind(listen_fd.get(), reinterpret_cast<sockaddr*>(&listen_addr), - listener.addr_len), - SyscallSucceeds()); - ASSERT_THAT(listen(listen_fd.get(), kBacklog), SyscallSucceeds()); - - // Get the port bound by the listening socket. - socklen_t addrlen = listener.addr_len; - ASSERT_THAT(getsockname(listen_fd.get(), - reinterpret_cast<sockaddr*>(&listen_addr), &addrlen), - SyscallSucceeds()); - uint16_t const port = - ASSERT_NO_ERRNO_AND_VALUE(AddrPort(listener.family(), listen_addr)); - - DisableSave ds; // Too many system calls. - sockaddr_storage conn_addr = connector.addr; - ASSERT_NO_ERRNO(SetAddrPort(connector.family(), &conn_addr, port)); - FileDescriptor clients[kFDs]; - std::unique_ptr<ScopedThread> threads[kThreadCount]; - for (int i = 0; i < kFDs; i++) { - clients[i] = ASSERT_NO_ERRNO_AND_VALUE( - Socket(connector.family(), SOCK_STREAM | SOCK_NONBLOCK, IPPROTO_TCP)); - } - for (int i = 0; i < kThreadCount; i++) { - threads[i] = absl::make_unique<ScopedThread>([&connector, &conn_addr, - &clients, i]() { - for (int j = 0; j < kFDsPerThread; j++) { - int k = i * kFDsPerThread + j; - int ret = - connect(clients[k].get(), reinterpret_cast<sockaddr*>(&conn_addr), - connector.addr_len); - if (ret != 0) { - EXPECT_THAT(ret, SyscallFailsWithErrno(EINPROGRESS)); - } - } - }); - } - for (int i = 0; i < kThreadCount; i++) { - threads[i]->Join(); - } - for (int i = 0; i < kAcceptCount; i++) { - auto accepted = - ASSERT_NO_ERRNO_AND_VALUE(Accept(listen_fd.get(), nullptr, nullptr)); - } - // TODO(b/138400178): Fix cooperative S/R failure when ds.reset() is invoked - // before function end. - // ds.reset(); -} - -TEST_P(SocketInetLoopbackTest, TCPbacklog) { - auto const& param = GetParam(); - - TestAddress const& listener = param.listener; - TestAddress const& connector = param.connector; - - // Create the listening socket. - const FileDescriptor listen_fd = ASSERT_NO_ERRNO_AND_VALUE( - Socket(listener.family(), SOCK_STREAM, IPPROTO_TCP)); - sockaddr_storage listen_addr = listener.addr; - ASSERT_THAT(bind(listen_fd.get(), reinterpret_cast<sockaddr*>(&listen_addr), - listener.addr_len), - SyscallSucceeds()); - ASSERT_THAT(listen(listen_fd.get(), 2), SyscallSucceeds()); - - // Get the port bound by the listening socket. - socklen_t addrlen = listener.addr_len; - ASSERT_THAT(getsockname(listen_fd.get(), - reinterpret_cast<sockaddr*>(&listen_addr), &addrlen), - SyscallSucceeds()); - uint16_t const port = - ASSERT_NO_ERRNO_AND_VALUE(AddrPort(listener.family(), listen_addr)); - int i = 0; - while (1) { - int ret; - - // Connect to the listening socket. - const FileDescriptor conn_fd = ASSERT_NO_ERRNO_AND_VALUE( - Socket(connector.family(), SOCK_STREAM | SOCK_NONBLOCK, IPPROTO_TCP)); - sockaddr_storage conn_addr = connector.addr; - ASSERT_NO_ERRNO(SetAddrPort(connector.family(), &conn_addr, port)); - ret = connect(conn_fd.get(), reinterpret_cast<sockaddr*>(&conn_addr), - connector.addr_len); - if (ret != 0) { - EXPECT_THAT(ret, SyscallFailsWithErrno(EINPROGRESS)); - struct pollfd pfd = { - .fd = conn_fd.get(), - .events = POLLOUT, - }; - ret = poll(&pfd, 1, 3000); - if (ret == 0) break; - EXPECT_THAT(ret, SyscallSucceedsWithValue(1)); - } - EXPECT_THAT(RetryEINTR(send)(conn_fd.get(), &i, sizeof(i), 0), - SyscallSucceedsWithValue(sizeof(i))); - ASSERT_THAT(shutdown(conn_fd.get(), SHUT_RDWR), SyscallSucceeds()); - i++; - } - - for (; i != 0; i--) { - // Accept the connection. - // - // We have to assign a name to the accepted socket, as unamed temporary - // objects are destructed upon full evaluation of the expression it is in, - // potentially causing the connecting socket to fail to shutdown properly. - auto accepted = - ASSERT_NO_ERRNO_AND_VALUE(Accept(listen_fd.get(), nullptr, nullptr)); - } -} - -// TCPFinWait2Test creates a pair of connected sockets then closes one end to -// trigger FIN_WAIT2 state for the closed endpoint. Then it binds the same local -// IP/port on a new socket and tries to connect. The connect should fail w/ -// an EADDRINUSE. Then we wait till the FIN_WAIT2 timeout is over and try the -// connect again with a new socket and this time it should succeed. -// -// TCP timers are not S/R today, this can cause this test to be flaky when run -// under random S/R due to timer being reset on a restore. -TEST_P(SocketInetLoopbackTest, TCPFinWait2Test_NoRandomSave) { - auto const& param = GetParam(); - TestAddress const& listener = param.listener; - TestAddress const& connector = param.connector; - - // Create the listening socket. - const FileDescriptor listen_fd = ASSERT_NO_ERRNO_AND_VALUE( - Socket(listener.family(), SOCK_STREAM, IPPROTO_TCP)); - sockaddr_storage listen_addr = listener.addr; - ASSERT_THAT(bind(listen_fd.get(), reinterpret_cast<sockaddr*>(&listen_addr), - listener.addr_len), - SyscallSucceeds()); - ASSERT_THAT(listen(listen_fd.get(), SOMAXCONN), SyscallSucceeds()); - - // Get the port bound by the listening socket. - socklen_t addrlen = listener.addr_len; - ASSERT_THAT(getsockname(listen_fd.get(), - reinterpret_cast<sockaddr*>(&listen_addr), &addrlen), - SyscallSucceeds()); - - uint16_t const port = - ASSERT_NO_ERRNO_AND_VALUE(AddrPort(listener.family(), listen_addr)); - - // Connect to the listening socket. - FileDescriptor conn_fd = ASSERT_NO_ERRNO_AND_VALUE( - Socket(connector.family(), SOCK_STREAM, IPPROTO_TCP)); - - // Lower FIN_WAIT2 state to 5 seconds for test. - constexpr int kTCPLingerTimeout = 5; - EXPECT_THAT(setsockopt(conn_fd.get(), IPPROTO_TCP, TCP_LINGER2, - &kTCPLingerTimeout, sizeof(kTCPLingerTimeout)), - SyscallSucceedsWithValue(0)); - - sockaddr_storage conn_addr = connector.addr; - ASSERT_NO_ERRNO(SetAddrPort(connector.family(), &conn_addr, port)); - ASSERT_THAT(RetryEINTR(connect)(conn_fd.get(), - reinterpret_cast<sockaddr*>(&conn_addr), - connector.addr_len), - SyscallSucceeds()); - - // Accept the connection. - auto accepted = - ASSERT_NO_ERRNO_AND_VALUE(Accept(listen_fd.get(), nullptr, nullptr)); - - // Get the address/port bound by the connecting socket. - sockaddr_storage conn_bound_addr; - socklen_t conn_addrlen = connector.addr_len; - ASSERT_THAT( - getsockname(conn_fd.get(), reinterpret_cast<sockaddr*>(&conn_bound_addr), - &conn_addrlen), - SyscallSucceeds()); - - // close the connecting FD to trigger FIN_WAIT2 on the connected fd. - conn_fd.reset(); - - // Now bind and connect a new socket. - const FileDescriptor conn_fd2 = ASSERT_NO_ERRNO_AND_VALUE( - Socket(connector.family(), SOCK_STREAM, IPPROTO_TCP)); - - // Disable cooperative saves after this point. As a save between the first - // bind/connect and the second one can cause the linger timeout timer to - // be restarted causing the final bind/connect to fail. - DisableSave ds; - - // TODO(gvisor.dev/issue/1030): Portmanager does not track all 5 tuple - // reservations which causes the bind() to succeed on gVisor but connect - // correctly fails. - if (IsRunningOnGvisor()) { - ASSERT_THAT( - bind(conn_fd2.get(), reinterpret_cast<sockaddr*>(&conn_bound_addr), - conn_addrlen), - SyscallSucceeds()); - ASSERT_THAT(RetryEINTR(connect)(conn_fd2.get(), - reinterpret_cast<sockaddr*>(&conn_addr), - conn_addrlen), - SyscallFailsWithErrno(EADDRINUSE)); - } else { - ASSERT_THAT( - bind(conn_fd2.get(), reinterpret_cast<sockaddr*>(&conn_bound_addr), - conn_addrlen), - SyscallFailsWithErrno(EADDRINUSE)); - } - - // Sleep for a little over the linger timeout to reduce flakiness in - // save/restore tests. - absl::SleepFor(absl::Seconds(kTCPLingerTimeout + 2)); - - ds.reset(); - - if (!IsRunningOnGvisor()) { - ASSERT_THAT( - bind(conn_fd2.get(), reinterpret_cast<sockaddr*>(&conn_bound_addr), - conn_addrlen), - SyscallSucceeds()); - } - ASSERT_THAT(RetryEINTR(connect)(conn_fd2.get(), - reinterpret_cast<sockaddr*>(&conn_addr), - conn_addrlen), - SyscallSucceeds()); -} - -// TCPLinger2TimeoutAfterClose creates a pair of connected sockets -// then closes one end to trigger FIN_WAIT2 state for the closed endpont. -// It then sleeps for the TCP_LINGER2 timeout and verifies that bind/ -// connecting the same address succeeds. -// -// TCP timers are not S/R today, this can cause this test to be flaky when run -// under random S/R due to timer being reset on a restore. -TEST_P(SocketInetLoopbackTest, TCPLinger2TimeoutAfterClose_NoRandomSave) { - auto const& param = GetParam(); - TestAddress const& listener = param.listener; - TestAddress const& connector = param.connector; - - // Create the listening socket. - const FileDescriptor listen_fd = ASSERT_NO_ERRNO_AND_VALUE( - Socket(listener.family(), SOCK_STREAM, IPPROTO_TCP)); - sockaddr_storage listen_addr = listener.addr; - ASSERT_THAT(bind(listen_fd.get(), reinterpret_cast<sockaddr*>(&listen_addr), - listener.addr_len), - SyscallSucceeds()); - ASSERT_THAT(listen(listen_fd.get(), SOMAXCONN), SyscallSucceeds()); - - // Get the port bound by the listening socket. - socklen_t addrlen = listener.addr_len; - ASSERT_THAT(getsockname(listen_fd.get(), - reinterpret_cast<sockaddr*>(&listen_addr), &addrlen), - SyscallSucceeds()); - - uint16_t const port = - ASSERT_NO_ERRNO_AND_VALUE(AddrPort(listener.family(), listen_addr)); - - // Connect to the listening socket. - FileDescriptor conn_fd = ASSERT_NO_ERRNO_AND_VALUE( - Socket(connector.family(), SOCK_STREAM, IPPROTO_TCP)); - - sockaddr_storage conn_addr = connector.addr; - ASSERT_NO_ERRNO(SetAddrPort(connector.family(), &conn_addr, port)); - ASSERT_THAT(RetryEINTR(connect)(conn_fd.get(), - reinterpret_cast<sockaddr*>(&conn_addr), - connector.addr_len), - SyscallSucceeds()); - - // Accept the connection. - auto accepted = - ASSERT_NO_ERRNO_AND_VALUE(Accept(listen_fd.get(), nullptr, nullptr)); - - // Get the address/port bound by the connecting socket. - sockaddr_storage conn_bound_addr; - socklen_t conn_addrlen = connector.addr_len; - ASSERT_THAT( - getsockname(conn_fd.get(), reinterpret_cast<sockaddr*>(&conn_bound_addr), - &conn_addrlen), - SyscallSucceeds()); - - constexpr int kTCPLingerTimeout = 5; - EXPECT_THAT(setsockopt(conn_fd.get(), IPPROTO_TCP, TCP_LINGER2, - &kTCPLingerTimeout, sizeof(kTCPLingerTimeout)), - SyscallSucceedsWithValue(0)); - - // close the connecting FD to trigger FIN_WAIT2 on the connected fd. - conn_fd.reset(); - - absl::SleepFor(absl::Seconds(kTCPLingerTimeout + 1)); - - // Now bind and connect a new socket and verify that we can immediately - // rebind the address bound by the conn_fd as it never entered TIME_WAIT. - const FileDescriptor conn_fd2 = ASSERT_NO_ERRNO_AND_VALUE( - Socket(connector.family(), SOCK_STREAM, IPPROTO_TCP)); - - ASSERT_THAT(bind(conn_fd2.get(), - reinterpret_cast<sockaddr*>(&conn_bound_addr), conn_addrlen), - SyscallSucceeds()); - ASSERT_THAT(RetryEINTR(connect)(conn_fd2.get(), - reinterpret_cast<sockaddr*>(&conn_addr), - conn_addrlen), - SyscallSucceeds()); -} - -// TCPResetAfterClose creates a pair of connected sockets then closes -// one end to trigger FIN_WAIT2 state for the closed endpoint verifies -// that we generate RSTs for any new data after the socket is fully -// closed. -TEST_P(SocketInetLoopbackTest, TCPResetAfterClose) { - auto const& param = GetParam(); - TestAddress const& listener = param.listener; - TestAddress const& connector = param.connector; - - // Create the listening socket. - const FileDescriptor listen_fd = ASSERT_NO_ERRNO_AND_VALUE( - Socket(listener.family(), SOCK_STREAM, IPPROTO_TCP)); - sockaddr_storage listen_addr = listener.addr; - ASSERT_THAT(bind(listen_fd.get(), reinterpret_cast<sockaddr*>(&listen_addr), - listener.addr_len), - SyscallSucceeds()); - ASSERT_THAT(listen(listen_fd.get(), SOMAXCONN), SyscallSucceeds()); - - // Get the port bound by the listening socket. - socklen_t addrlen = listener.addr_len; - ASSERT_THAT(getsockname(listen_fd.get(), - reinterpret_cast<sockaddr*>(&listen_addr), &addrlen), - SyscallSucceeds()); - - uint16_t const port = - ASSERT_NO_ERRNO_AND_VALUE(AddrPort(listener.family(), listen_addr)); - - // Connect to the listening socket. - FileDescriptor conn_fd = ASSERT_NO_ERRNO_AND_VALUE( - Socket(connector.family(), SOCK_STREAM, IPPROTO_TCP)); - - sockaddr_storage conn_addr = connector.addr; - ASSERT_NO_ERRNO(SetAddrPort(connector.family(), &conn_addr, port)); - ASSERT_THAT(RetryEINTR(connect)(conn_fd.get(), - reinterpret_cast<sockaddr*>(&conn_addr), - connector.addr_len), - SyscallSucceeds()); - - // Accept the connection. - auto accepted = - ASSERT_NO_ERRNO_AND_VALUE(Accept(listen_fd.get(), nullptr, nullptr)); - - // close the connecting FD to trigger FIN_WAIT2 on the connected fd. - conn_fd.reset(); - - int data = 1234; - - // Now send data which should trigger a RST as the other end should - // have timed out and closed the socket. - EXPECT_THAT(RetryEINTR(send)(accepted.get(), &data, sizeof(data), 0), - SyscallSucceeds()); - // Sleep for a shortwhile to get a RST back. - absl::SleepFor(absl::Seconds(1)); - - // Try writing again and we should get an EPIPE back. - EXPECT_THAT(RetryEINTR(send)(accepted.get(), &data, sizeof(data), 0), - SyscallFailsWithErrno(EPIPE)); - - // Trying to read should return zero as the other end did send - // us a FIN. We do it twice to verify that the RST does not cause an - // ECONNRESET on the read after EOF has been read by applicaiton. - EXPECT_THAT(RetryEINTR(recv)(accepted.get(), &data, sizeof(data), 0), - SyscallSucceedsWithValue(0)); - EXPECT_THAT(RetryEINTR(recv)(accepted.get(), &data, sizeof(data), 0), - SyscallSucceedsWithValue(0)); -} - -// This test is disabled under random save as the the restore run -// results in the stack.Seed() being different which can cause -// sequence number of final connect to be one that is considered -// old and can cause the test to be flaky. -TEST_P(SocketInetLoopbackTest, TCPTimeWaitTest_NoRandomSave) { - auto const& param = GetParam(); - TestAddress const& listener = param.listener; - TestAddress const& connector = param.connector; - - // Create the listening socket. - const FileDescriptor listen_fd = ASSERT_NO_ERRNO_AND_VALUE( - Socket(listener.family(), SOCK_STREAM, IPPROTO_TCP)); - sockaddr_storage listen_addr = listener.addr; - ASSERT_THAT(bind(listen_fd.get(), reinterpret_cast<sockaddr*>(&listen_addr), - listener.addr_len), - SyscallSucceeds()); - ASSERT_THAT(listen(listen_fd.get(), SOMAXCONN), SyscallSucceeds()); - - // Get the port bound by the listening socket. - socklen_t addrlen = listener.addr_len; - ASSERT_THAT(getsockname(listen_fd.get(), - reinterpret_cast<sockaddr*>(&listen_addr), &addrlen), - SyscallSucceeds()); - - uint16_t const port = - ASSERT_NO_ERRNO_AND_VALUE(AddrPort(listener.family(), listen_addr)); - - // Connect to the listening socket. - FileDescriptor conn_fd = ASSERT_NO_ERRNO_AND_VALUE( - Socket(connector.family(), SOCK_STREAM, IPPROTO_TCP)); - - // We disable saves after this point as a S/R causes the netstack seed - // to be regenerated which changes what ports/ISN is picked for a given - // tuple (src ip,src port, dst ip, dst port). This can cause the final - // SYN to use a sequence number that looks like one from the current - // connection in TIME_WAIT and will not be accepted causing the test - // to timeout. - // - // TODO(gvisor.dev/issue/940): S/R portSeed/portHint - DisableSave ds; - sockaddr_storage conn_addr = connector.addr; - ASSERT_NO_ERRNO(SetAddrPort(connector.family(), &conn_addr, port)); - ASSERT_THAT(RetryEINTR(connect)(conn_fd.get(), - reinterpret_cast<sockaddr*>(&conn_addr), - connector.addr_len), - SyscallSucceeds()); - - // Accept the connection. - auto accepted = - ASSERT_NO_ERRNO_AND_VALUE(Accept(listen_fd.get(), nullptr, nullptr)); - - // Get the address/port bound by the connecting socket. - sockaddr_storage conn_bound_addr; - socklen_t conn_addrlen = connector.addr_len; - ASSERT_THAT( - getsockname(conn_fd.get(), reinterpret_cast<sockaddr*>(&conn_bound_addr), - &conn_addrlen), - SyscallSucceeds()); - - // close the accept FD to trigger TIME_WAIT on the accepted socket which - // should cause the conn_fd to follow CLOSE_WAIT->LAST_ACK->CLOSED instead of - // TIME_WAIT. - accepted.reset(); - absl::SleepFor(absl::Seconds(1)); - conn_fd.reset(); - absl::SleepFor(absl::Seconds(1)); - - // Now bind and connect a new socket and verify that we can immediately - // rebind the address bound by the conn_fd as it never entered TIME_WAIT. - const FileDescriptor conn_fd2 = ASSERT_NO_ERRNO_AND_VALUE( - Socket(connector.family(), SOCK_STREAM, IPPROTO_TCP)); - - ASSERT_THAT(bind(conn_fd2.get(), - reinterpret_cast<sockaddr*>(&conn_bound_addr), conn_addrlen), - SyscallSucceeds()); - ASSERT_THAT(RetryEINTR(connect)(conn_fd2.get(), - reinterpret_cast<sockaddr*>(&conn_addr), - conn_addrlen), - SyscallSucceeds()); -} - -TEST_P(SocketInetLoopbackTest, AcceptedInheritsTCPUserTimeout) { - auto const& param = GetParam(); - TestAddress const& listener = param.listener; - TestAddress const& connector = param.connector; - - // Create the listening socket. - const FileDescriptor listen_fd = ASSERT_NO_ERRNO_AND_VALUE( - Socket(listener.family(), SOCK_STREAM, IPPROTO_TCP)); - sockaddr_storage listen_addr = listener.addr; - ASSERT_THAT(bind(listen_fd.get(), reinterpret_cast<sockaddr*>(&listen_addr), - listener.addr_len), - SyscallSucceeds()); - ASSERT_THAT(listen(listen_fd.get(), SOMAXCONN), SyscallSucceeds()); - - // Get the port bound by the listening socket. - socklen_t addrlen = listener.addr_len; - ASSERT_THAT(getsockname(listen_fd.get(), - reinterpret_cast<sockaddr*>(&listen_addr), &addrlen), - SyscallSucceeds()); - - const uint16_t port = - ASSERT_NO_ERRNO_AND_VALUE(AddrPort(listener.family(), listen_addr)); - - // Set the userTimeout on the listening socket. - constexpr int kUserTimeout = 10; - ASSERT_THAT(setsockopt(listen_fd.get(), IPPROTO_TCP, TCP_USER_TIMEOUT, - &kUserTimeout, sizeof(kUserTimeout)), - SyscallSucceeds()); - - // Connect to the listening socket. - FileDescriptor conn_fd = ASSERT_NO_ERRNO_AND_VALUE( - Socket(connector.family(), SOCK_STREAM, IPPROTO_TCP)); - - sockaddr_storage conn_addr = connector.addr; - ASSERT_NO_ERRNO(SetAddrPort(connector.family(), &conn_addr, port)); - ASSERT_THAT(RetryEINTR(connect)(conn_fd.get(), - reinterpret_cast<sockaddr*>(&conn_addr), - connector.addr_len), - SyscallSucceeds()); - - // Accept the connection. - auto accepted = - ASSERT_NO_ERRNO_AND_VALUE(Accept(listen_fd.get(), nullptr, nullptr)); - // Verify that the accepted socket inherited the user timeout set on - // listening socket. - int get = -1; - socklen_t get_len = sizeof(get); - ASSERT_THAT( - getsockopt(accepted.get(), IPPROTO_TCP, TCP_USER_TIMEOUT, &get, &get_len), - SyscallSucceeds()); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kUserTimeout); -} - -// TODO(gvisor.dev/issue/1688): Partially completed passive endpoints are not -// saved. Enable S/R once issue is fixed. -TEST_P(SocketInetLoopbackTest, TCPDeferAccept_NoRandomSave) { - // TODO(gvisor.dev/issue/1688): Partially completed passive endpoints are not - // saved. Enable S/R issue is fixed. - DisableSave ds; - - auto const& param = GetParam(); - TestAddress const& listener = param.listener; - TestAddress const& connector = param.connector; - - // Create the listening socket. - const FileDescriptor listen_fd = ASSERT_NO_ERRNO_AND_VALUE( - Socket(listener.family(), SOCK_STREAM, IPPROTO_TCP)); - sockaddr_storage listen_addr = listener.addr; - ASSERT_THAT(bind(listen_fd.get(), reinterpret_cast<sockaddr*>(&listen_addr), - listener.addr_len), - SyscallSucceeds()); - ASSERT_THAT(listen(listen_fd.get(), SOMAXCONN), SyscallSucceeds()); - - // Get the port bound by the listening socket. - socklen_t addrlen = listener.addr_len; - ASSERT_THAT(getsockname(listen_fd.get(), - reinterpret_cast<sockaddr*>(&listen_addr), &addrlen), - SyscallSucceeds()); - - const uint16_t port = - ASSERT_NO_ERRNO_AND_VALUE(AddrPort(listener.family(), listen_addr)); - - // Set the TCP_DEFER_ACCEPT on the listening socket. - constexpr int kTCPDeferAccept = 3; - ASSERT_THAT(setsockopt(listen_fd.get(), IPPROTO_TCP, TCP_DEFER_ACCEPT, - &kTCPDeferAccept, sizeof(kTCPDeferAccept)), - SyscallSucceeds()); - - // Connect to the listening socket. - FileDescriptor conn_fd = ASSERT_NO_ERRNO_AND_VALUE( - Socket(connector.family(), SOCK_STREAM, IPPROTO_TCP)); - - sockaddr_storage conn_addr = connector.addr; - ASSERT_NO_ERRNO(SetAddrPort(connector.family(), &conn_addr, port)); - ASSERT_THAT(RetryEINTR(connect)(conn_fd.get(), - reinterpret_cast<sockaddr*>(&conn_addr), - connector.addr_len), - SyscallSucceeds()); - - // Set the listening socket to nonblock so that we can verify that there is no - // connection in queue despite the connect above succeeding since the peer has - // sent no data and TCP_DEFER_ACCEPT is set on the listening socket. Set the - // FD to O_NONBLOCK. - int opts; - ASSERT_THAT(opts = fcntl(listen_fd.get(), F_GETFL), SyscallSucceeds()); - opts |= O_NONBLOCK; - ASSERT_THAT(fcntl(listen_fd.get(), F_SETFL, opts), SyscallSucceeds()); - - ASSERT_THAT(accept(listen_fd.get(), nullptr, nullptr), - SyscallFailsWithErrno(EWOULDBLOCK)); - - // Set FD back to blocking. - opts &= ~O_NONBLOCK; - ASSERT_THAT(fcntl(listen_fd.get(), F_SETFL, opts), SyscallSucceeds()); - - // Now write some data to the socket. - int data = 0; - ASSERT_THAT(RetryEINTR(write)(conn_fd.get(), &data, sizeof(data)), - SyscallSucceedsWithValue(sizeof(data))); - - // This should now cause the connection to complete and be delivered to the - // accept socket. - - // Accept the connection. - auto accepted = - ASSERT_NO_ERRNO_AND_VALUE(Accept(listen_fd.get(), nullptr, nullptr)); - - // Verify that the accepted socket returns the data written. - int get = -1; - ASSERT_THAT(RetryEINTR(recv)(accepted.get(), &get, sizeof(get), 0), - SyscallSucceedsWithValue(sizeof(get))); - - EXPECT_EQ(get, data); -} - -// TODO(gvisor.dev/issue/1688): Partially completed passive endpoints are not -// saved. Enable S/R once issue is fixed. -TEST_P(SocketInetLoopbackTest, TCPDeferAcceptTimeout_NoRandomSave) { - // TODO(gvisor.dev/issue/1688): Partially completed passive endpoints are not - // saved. Enable S/R once issue is fixed. - DisableSave ds; - - auto const& param = GetParam(); - TestAddress const& listener = param.listener; - TestAddress const& connector = param.connector; - - // Create the listening socket. - const FileDescriptor listen_fd = ASSERT_NO_ERRNO_AND_VALUE( - Socket(listener.family(), SOCK_STREAM, IPPROTO_TCP)); - sockaddr_storage listen_addr = listener.addr; - ASSERT_THAT(bind(listen_fd.get(), reinterpret_cast<sockaddr*>(&listen_addr), - listener.addr_len), - SyscallSucceeds()); - ASSERT_THAT(listen(listen_fd.get(), SOMAXCONN), SyscallSucceeds()); - - // Get the port bound by the listening socket. - socklen_t addrlen = listener.addr_len; - ASSERT_THAT(getsockname(listen_fd.get(), - reinterpret_cast<sockaddr*>(&listen_addr), &addrlen), - SyscallSucceeds()); - - const uint16_t port = - ASSERT_NO_ERRNO_AND_VALUE(AddrPort(listener.family(), listen_addr)); - - // Set the TCP_DEFER_ACCEPT on the listening socket. - constexpr int kTCPDeferAccept = 3; - ASSERT_THAT(setsockopt(listen_fd.get(), IPPROTO_TCP, TCP_DEFER_ACCEPT, - &kTCPDeferAccept, sizeof(kTCPDeferAccept)), - SyscallSucceeds()); - - // Connect to the listening socket. - FileDescriptor conn_fd = ASSERT_NO_ERRNO_AND_VALUE( - Socket(connector.family(), SOCK_STREAM, IPPROTO_TCP)); - - sockaddr_storage conn_addr = connector.addr; - ASSERT_NO_ERRNO(SetAddrPort(connector.family(), &conn_addr, port)); - ASSERT_THAT(RetryEINTR(connect)(conn_fd.get(), - reinterpret_cast<sockaddr*>(&conn_addr), - connector.addr_len), - SyscallSucceeds()); - - // Set the listening socket to nonblock so that we can verify that there is no - // connection in queue despite the connect above succeeding since the peer has - // sent no data and TCP_DEFER_ACCEPT is set on the listening socket. Set the - // FD to O_NONBLOCK. - int opts; - ASSERT_THAT(opts = fcntl(listen_fd.get(), F_GETFL), SyscallSucceeds()); - opts |= O_NONBLOCK; - ASSERT_THAT(fcntl(listen_fd.get(), F_SETFL, opts), SyscallSucceeds()); - - // Verify that there is no acceptable connection before TCP_DEFER_ACCEPT - // timeout is hit. - absl::SleepFor(absl::Seconds(kTCPDeferAccept - 1)); - ASSERT_THAT(accept(listen_fd.get(), nullptr, nullptr), - SyscallFailsWithErrno(EWOULDBLOCK)); - - // Set FD back to blocking. - opts &= ~O_NONBLOCK; - ASSERT_THAT(fcntl(listen_fd.get(), F_SETFL, opts), SyscallSucceeds()); - - // Now sleep for a little over the TCP_DEFER_ACCEPT duration. When the timeout - // is hit a SYN-ACK should be retransmitted by the listener as a last ditch - // attempt to complete the connection with or without data. - absl::SleepFor(absl::Seconds(2)); - - // Verify that we have a connection that can be accepted even though no - // data was written. - auto accepted = - ASSERT_NO_ERRNO_AND_VALUE(Accept(listen_fd.get(), nullptr, nullptr)); -} - -INSTANTIATE_TEST_SUITE_P( - All, SocketInetLoopbackTest, - ::testing::Values( - // Listeners bound to IPv4 addresses refuse connections using IPv6 - // addresses. - TestParam{V4Any(), V4Any()}, TestParam{V4Any(), V4Loopback()}, - TestParam{V4Any(), V4MappedAny()}, - TestParam{V4Any(), V4MappedLoopback()}, - TestParam{V4Loopback(), V4Any()}, TestParam{V4Loopback(), V4Loopback()}, - TestParam{V4Loopback(), V4MappedLoopback()}, - TestParam{V4MappedAny(), V4Any()}, - TestParam{V4MappedAny(), V4Loopback()}, - TestParam{V4MappedAny(), V4MappedAny()}, - TestParam{V4MappedAny(), V4MappedLoopback()}, - TestParam{V4MappedLoopback(), V4Any()}, - TestParam{V4MappedLoopback(), V4Loopback()}, - TestParam{V4MappedLoopback(), V4MappedLoopback()}, - - // Listeners bound to IN6ADDR_ANY accept all connections. - TestParam{V6Any(), V4Any()}, TestParam{V6Any(), V4Loopback()}, - TestParam{V6Any(), V4MappedAny()}, - TestParam{V6Any(), V4MappedLoopback()}, TestParam{V6Any(), V6Any()}, - TestParam{V6Any(), V6Loopback()}, - - // Listeners bound to IN6ADDR_LOOPBACK refuse connections using IPv4 - // addresses. - TestParam{V6Loopback(), V6Any()}, - TestParam{V6Loopback(), V6Loopback()}), - DescribeTestParam); - -using SocketInetReusePortTest = ::testing::TestWithParam<TestParam>; - -// TODO(gvisor.dev/issue/940): Remove _NoRandomSave when portHint/stack.Seed is -// saved/restored. -TEST_P(SocketInetReusePortTest, TcpPortReuseMultiThread_NoRandomSave) { - auto const& param = GetParam(); - - TestAddress const& listener = param.listener; - TestAddress const& connector = param.connector; - sockaddr_storage listen_addr = listener.addr; - sockaddr_storage conn_addr = connector.addr; - constexpr int kThreadCount = 3; - constexpr int kConnectAttempts = 10000; - - // Create the listening socket. - FileDescriptor listener_fds[kThreadCount]; - for (int i = 0; i < kThreadCount; i++) { - listener_fds[i] = ASSERT_NO_ERRNO_AND_VALUE( - Socket(listener.family(), SOCK_STREAM, IPPROTO_TCP)); - int fd = listener_fds[i].get(); - - ASSERT_THAT(setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - ASSERT_THAT( - bind(fd, reinterpret_cast<sockaddr*>(&listen_addr), listener.addr_len), - SyscallSucceeds()); - ASSERT_THAT(listen(fd, 40), SyscallSucceeds()); - - // On the first bind we need to determine which port was bound. - if (i != 0) { - continue; - } - - // Get the port bound by the listening socket. - socklen_t addrlen = listener.addr_len; - ASSERT_THAT( - getsockname(listener_fds[0].get(), - reinterpret_cast<sockaddr*>(&listen_addr), &addrlen), - SyscallSucceeds()); - uint16_t const port = - ASSERT_NO_ERRNO_AND_VALUE(AddrPort(listener.family(), listen_addr)); - ASSERT_NO_ERRNO(SetAddrPort(listener.family(), &listen_addr, port)); - ASSERT_NO_ERRNO(SetAddrPort(connector.family(), &conn_addr, port)); - } - - std::atomic<int> connects_received = ATOMIC_VAR_INIT(0); - std::unique_ptr<ScopedThread> listen_thread[kThreadCount]; - int accept_counts[kThreadCount] = {}; - // TODO(avagin): figure how to not disable S/R for the whole test. - // We need to take into account that this test executes a lot of system - // calls from many threads. - DisableSave ds; - - for (int i = 0; i < kThreadCount; i++) { - listen_thread[i] = absl::make_unique<ScopedThread>( - [&listener_fds, &accept_counts, i, &connects_received]() { - do { - auto fd = Accept(listener_fds[i].get(), nullptr, nullptr); - if (!fd.ok()) { - if (connects_received >= kConnectAttempts) { - // Another thread have shutdown our read side causing the - // accept to fail. - break; - } - ASSERT_NO_ERRNO(fd); - break; - } - // Receive some data from a socket to be sure that the connect() - // system call has been completed on another side. - // Do a short read and then close the socket to trigger a RST. This - // ensures that both ends of the connection are cleaned up and no - // goroutines hang around in TIME-WAIT. We do this so that this test - // does not timeout under gotsan runs where lots of goroutines can - // cause the test to use absurd amounts of memory. - // - // See: https://tools.ietf.org/html/rfc2525#page-50 section 2.17 - uint16_t data; - EXPECT_THAT( - RetryEINTR(recv)(fd.ValueOrDie().get(), &data, sizeof(data), 0), - SyscallSucceedsWithValue(sizeof(data))); - accept_counts[i]++; - } while (++connects_received < kConnectAttempts); - - // Shutdown all sockets to wake up other threads. - for (int j = 0; j < kThreadCount; j++) { - shutdown(listener_fds[j].get(), SHUT_RDWR); - } - }); - } - - ScopedThread connecting_thread([&connector, &conn_addr]() { - for (int i = 0; i < kConnectAttempts; i++) { - const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE( - Socket(connector.family(), SOCK_STREAM, IPPROTO_TCP)); - ASSERT_THAT( - RetryEINTR(connect)(fd.get(), reinterpret_cast<sockaddr*>(&conn_addr), - connector.addr_len), - SyscallSucceeds()); - - // Do two separate sends to ensure two segments are received. This is - // required for netstack where read is incorrectly assuming a whole - // segment is read when endpoint.Read() is called which is technically - // incorrect as the syscall that invoked endpoint.Read() may only - // consume it partially. This results in a case where a close() of - // such a socket does not trigger a RST in netstack due to the - // endpoint assuming that the endpoint has no unread data. - EXPECT_THAT(RetryEINTR(send)(fd.get(), &i, sizeof(i), 0), - SyscallSucceedsWithValue(sizeof(i))); - - // TODO(gvisor.dev/issue/1449): Remove this block once netstack correctly - // generates a RST. - if (IsRunningOnGvisor()) { - EXPECT_THAT(RetryEINTR(send)(fd.get(), &i, sizeof(i), 0), - SyscallSucceedsWithValue(sizeof(i))); - } - } - }); - - // Join threads to be sure that all connections have been counted - connecting_thread.Join(); - for (int i = 0; i < kThreadCount; i++) { - listen_thread[i]->Join(); - } - // Check that connections are distributed fairly between listening sockets - for (int i = 0; i < kThreadCount; i++) - EXPECT_THAT(accept_counts[i], - EquivalentWithin((kConnectAttempts / kThreadCount), 0.10)); -} - -TEST_P(SocketInetReusePortTest, UdpPortReuseMultiThread) { - auto const& param = GetParam(); - - TestAddress const& listener = param.listener; - TestAddress const& connector = param.connector; - sockaddr_storage listen_addr = listener.addr; - sockaddr_storage conn_addr = connector.addr; - constexpr int kThreadCount = 3; - - // Create the listening socket. - FileDescriptor listener_fds[kThreadCount]; - for (int i = 0; i < kThreadCount; i++) { - listener_fds[i] = - ASSERT_NO_ERRNO_AND_VALUE(Socket(listener.family(), SOCK_DGRAM, 0)); - int fd = listener_fds[i].get(); - - ASSERT_THAT(setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - ASSERT_THAT( - bind(fd, reinterpret_cast<sockaddr*>(&listen_addr), listener.addr_len), - SyscallSucceeds()); - - // On the first bind we need to determine which port was bound. - if (i != 0) { - continue; - } - - // Get the port bound by the listening socket. - socklen_t addrlen = listener.addr_len; - ASSERT_THAT( - getsockname(listener_fds[0].get(), - reinterpret_cast<sockaddr*>(&listen_addr), &addrlen), - SyscallSucceeds()); - uint16_t const port = - ASSERT_NO_ERRNO_AND_VALUE(AddrPort(listener.family(), listen_addr)); - ASSERT_NO_ERRNO(SetAddrPort(listener.family(), &listen_addr, port)); - ASSERT_NO_ERRNO(SetAddrPort(connector.family(), &conn_addr, port)); - } - - constexpr int kConnectAttempts = 10000; - std::atomic<int> packets_received = ATOMIC_VAR_INIT(0); - std::unique_ptr<ScopedThread> receiver_thread[kThreadCount]; - int packets_per_socket[kThreadCount] = {}; - // TODO(avagin): figure how to not disable S/R for the whole test. - DisableSave ds; // Too expensive. - - for (int i = 0; i < kThreadCount; i++) { - receiver_thread[i] = absl::make_unique<ScopedThread>( - [&listener_fds, &packets_per_socket, i, &packets_received]() { - do { - struct sockaddr_storage addr = {}; - socklen_t addrlen = sizeof(addr); - int data; - - auto ret = RetryEINTR(recvfrom)( - listener_fds[i].get(), &data, sizeof(data), 0, - reinterpret_cast<struct sockaddr*>(&addr), &addrlen); - - if (packets_received < kConnectAttempts) { - ASSERT_THAT(ret, SyscallSucceedsWithValue(sizeof(data))); - } - - if (ret != sizeof(data)) { - // Another thread may have shutdown our read side causing the - // recvfrom to fail. - break; - } - - packets_received++; - packets_per_socket[i]++; - - // A response is required to synchronize with the main thread, - // otherwise the main thread can send more than can fit into receive - // queues. - EXPECT_THAT(RetryEINTR(sendto)( - listener_fds[i].get(), &data, sizeof(data), 0, - reinterpret_cast<sockaddr*>(&addr), addrlen), - SyscallSucceedsWithValue(sizeof(data))); - } while (packets_received < kConnectAttempts); - - // Shutdown all sockets to wake up other threads. - for (int j = 0; j < kThreadCount; j++) - shutdown(listener_fds[j].get(), SHUT_RDWR); - }); - } - - ScopedThread main_thread([&connector, &conn_addr]() { - for (int i = 0; i < kConnectAttempts; i++) { - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Socket(connector.family(), SOCK_DGRAM, 0)); - EXPECT_THAT(RetryEINTR(sendto)(fd.get(), &i, sizeof(i), 0, - reinterpret_cast<sockaddr*>(&conn_addr), - connector.addr_len), - SyscallSucceedsWithValue(sizeof(i))); - int data; - EXPECT_THAT(RetryEINTR(recv)(fd.get(), &data, sizeof(data), 0), - SyscallSucceedsWithValue(sizeof(data))); - } - }); - - main_thread.Join(); - - // Join threads to be sure that all connections have been counted - for (int i = 0; i < kThreadCount; i++) { - receiver_thread[i]->Join(); - } - // Check that packets are distributed fairly between listening sockets. - for (int i = 0; i < kThreadCount; i++) - EXPECT_THAT(packets_per_socket[i], - EquivalentWithin((kConnectAttempts / kThreadCount), 0.10)); -} - -TEST_P(SocketInetReusePortTest, UdpPortReuseMultiThreadShort) { - auto const& param = GetParam(); - - TestAddress const& listener = param.listener; - TestAddress const& connector = param.connector; - sockaddr_storage listen_addr = listener.addr; - sockaddr_storage conn_addr = connector.addr; - constexpr int kThreadCount = 3; - - // TODO(b/141211329): endpointsByNic.seed has to be saved/restored. - const DisableSave ds141211329; - - // Create listening sockets. - FileDescriptor listener_fds[kThreadCount]; - for (int i = 0; i < kThreadCount; i++) { - listener_fds[i] = - ASSERT_NO_ERRNO_AND_VALUE(Socket(listener.family(), SOCK_DGRAM, 0)); - int fd = listener_fds[i].get(); - - ASSERT_THAT(setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - ASSERT_THAT( - bind(fd, reinterpret_cast<sockaddr*>(&listen_addr), listener.addr_len), - SyscallSucceeds()); - - // On the first bind we need to determine which port was bound. - if (i != 0) { - continue; - } - - // Get the port bound by the listening socket. - socklen_t addrlen = listener.addr_len; - ASSERT_THAT( - getsockname(listener_fds[0].get(), - reinterpret_cast<sockaddr*>(&listen_addr), &addrlen), - SyscallSucceeds()); - uint16_t const port = - ASSERT_NO_ERRNO_AND_VALUE(AddrPort(listener.family(), listen_addr)); - ASSERT_NO_ERRNO(SetAddrPort(listener.family(), &listen_addr, port)); - ASSERT_NO_ERRNO(SetAddrPort(connector.family(), &conn_addr, port)); - } - - constexpr int kConnectAttempts = 10; - FileDescriptor client_fds[kConnectAttempts]; - - // Do the first run without save/restore. - DisableSave ds; - for (int i = 0; i < kConnectAttempts; i++) { - client_fds[i] = - ASSERT_NO_ERRNO_AND_VALUE(Socket(connector.family(), SOCK_DGRAM, 0)); - EXPECT_THAT(RetryEINTR(sendto)(client_fds[i].get(), &i, sizeof(i), 0, - reinterpret_cast<sockaddr*>(&conn_addr), - connector.addr_len), - SyscallSucceedsWithValue(sizeof(i))); - } - ds.reset(); - - // Check that a mapping of client and server sockets has - // not been change after save/restore. - for (int i = 0; i < kConnectAttempts; i++) { - EXPECT_THAT(RetryEINTR(sendto)(client_fds[i].get(), &i, sizeof(i), 0, - reinterpret_cast<sockaddr*>(&conn_addr), - connector.addr_len), - SyscallSucceedsWithValue(sizeof(i))); - } - - struct pollfd pollfds[kThreadCount]; - for (int i = 0; i < kThreadCount; i++) { - pollfds[i].fd = listener_fds[i].get(); - pollfds[i].events = POLLIN; - } - - std::map<uint16_t, int> portToFD; - - int received = 0; - while (received < kConnectAttempts * 2) { - ASSERT_THAT(poll(pollfds, kThreadCount, -1), - SyscallSucceedsWithValue(Gt(0))); - - for (int i = 0; i < kThreadCount; i++) { - if ((pollfds[i].revents & POLLIN) == 0) { - continue; - } - - received++; - - const int fd = pollfds[i].fd; - struct sockaddr_storage addr = {}; - socklen_t addrlen = sizeof(addr); - int data; - EXPECT_THAT(RetryEINTR(recvfrom)( - fd, &data, sizeof(data), 0, - reinterpret_cast<struct sockaddr*>(&addr), &addrlen), - SyscallSucceedsWithValue(sizeof(data))); - uint16_t const port = - ASSERT_NO_ERRNO_AND_VALUE(AddrPort(connector.family(), addr)); - auto prev_port = portToFD.find(port); - // Check that all packets from one client have been delivered to the - // same server socket. - if (prev_port == portToFD.end()) { - portToFD[port] = fd; - } else { - EXPECT_EQ(portToFD[port], fd); - } - } - } -} - -INSTANTIATE_TEST_SUITE_P( - All, SocketInetReusePortTest, - ::testing::Values( - // Listeners bound to IPv4 addresses refuse connections using IPv6 - // addresses. - TestParam{V4Any(), V4Loopback()}, - TestParam{V4Loopback(), V4MappedLoopback()}, - - // Listeners bound to IN6ADDR_ANY accept all connections. - TestParam{V6Any(), V4Loopback()}, TestParam{V6Any(), V6Loopback()}, - - // Listeners bound to IN6ADDR_LOOPBACK refuse connections using IPv4 - // addresses. - TestParam{V6Loopback(), V6Loopback()}), - DescribeTestParam); - -struct ProtocolTestParam { - std::string description; - int type; -}; - -std::string DescribeProtocolTestParam( - ::testing::TestParamInfo<ProtocolTestParam> const& info) { - return info.param.description; -} - -using SocketMultiProtocolInetLoopbackTest = - ::testing::TestWithParam<ProtocolTestParam>; - -TEST_P(SocketMultiProtocolInetLoopbackTest, V4MappedLoopbackOnlyReservesV4) { - auto const& param = GetParam(); - - for (int i = 0; true; i++) { - // Bind the v4 loopback on a dual stack socket. - TestAddress const& test_addr_dual = V4MappedLoopback(); - sockaddr_storage addr_dual = test_addr_dual.addr; - const FileDescriptor fd_dual = ASSERT_NO_ERRNO_AND_VALUE( - Socket(test_addr_dual.family(), param.type, 0)); - ASSERT_THAT(bind(fd_dual.get(), reinterpret_cast<sockaddr*>(&addr_dual), - test_addr_dual.addr_len), - SyscallSucceeds()); - - // Get the port that we bound. - socklen_t addrlen = test_addr_dual.addr_len; - ASSERT_THAT(getsockname(fd_dual.get(), - reinterpret_cast<sockaddr*>(&addr_dual), &addrlen), - SyscallSucceeds()); - uint16_t const port = - ASSERT_NO_ERRNO_AND_VALUE(AddrPort(test_addr_dual.family(), addr_dual)); - - // Verify that we can still bind the v6 loopback on the same port. - TestAddress const& test_addr_v6 = V6Loopback(); - sockaddr_storage addr_v6 = test_addr_v6.addr; - ASSERT_NO_ERRNO(SetAddrPort(test_addr_v6.family(), &addr_v6, port)); - const FileDescriptor fd_v6 = - ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr_v6.family(), param.type, 0)); - int ret = bind(fd_v6.get(), reinterpret_cast<sockaddr*>(&addr_v6), - test_addr_v6.addr_len); - if (ret == -1 && errno == EADDRINUSE) { - // Port may have been in use. - ASSERT_LT(i, 100); // Give up after 100 tries. - continue; - } - ASSERT_THAT(ret, SyscallSucceeds()); - - // Verify that binding the v4 loopback with the same port on a v4 socket - // fails. - TestAddress const& test_addr_v4 = V4Loopback(); - sockaddr_storage addr_v4 = test_addr_v4.addr; - ASSERT_NO_ERRNO(SetAddrPort(test_addr_v4.family(), &addr_v4, port)); - const FileDescriptor fd_v4 = - ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr_v4.family(), param.type, 0)); - ASSERT_THAT(bind(fd_v4.get(), reinterpret_cast<sockaddr*>(&addr_v4), - test_addr_v4.addr_len), - SyscallFailsWithErrno(EADDRINUSE)); - - // No need to try again. - break; - } -} - -TEST_P(SocketMultiProtocolInetLoopbackTest, V4MappedAnyOnlyReservesV4) { - auto const& param = GetParam(); - - for (int i = 0; true; i++) { - // Bind the v4 any on a dual stack socket. - TestAddress const& test_addr_dual = V4MappedAny(); - sockaddr_storage addr_dual = test_addr_dual.addr; - const FileDescriptor fd_dual = ASSERT_NO_ERRNO_AND_VALUE( - Socket(test_addr_dual.family(), param.type, 0)); - ASSERT_THAT(bind(fd_dual.get(), reinterpret_cast<sockaddr*>(&addr_dual), - test_addr_dual.addr_len), - SyscallSucceeds()); - - // Get the port that we bound. - socklen_t addrlen = test_addr_dual.addr_len; - ASSERT_THAT(getsockname(fd_dual.get(), - reinterpret_cast<sockaddr*>(&addr_dual), &addrlen), - SyscallSucceeds()); - uint16_t const port = - ASSERT_NO_ERRNO_AND_VALUE(AddrPort(test_addr_dual.family(), addr_dual)); - - // Verify that we can still bind the v6 loopback on the same port. - TestAddress const& test_addr_v6 = V6Loopback(); - sockaddr_storage addr_v6 = test_addr_v6.addr; - ASSERT_NO_ERRNO(SetAddrPort(test_addr_v6.family(), &addr_v6, port)); - const FileDescriptor fd_v6 = - ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr_v6.family(), param.type, 0)); - int ret = bind(fd_v6.get(), reinterpret_cast<sockaddr*>(&addr_v6), - test_addr_v6.addr_len); - if (ret == -1 && errno == EADDRINUSE) { - // Port may have been in use. - ASSERT_LT(i, 100); // Give up after 100 tries. - continue; - } - ASSERT_THAT(ret, SyscallSucceeds()); - - // Verify that binding the v4 loopback with the same port on a v4 socket - // fails. - TestAddress const& test_addr_v4 = V4Loopback(); - sockaddr_storage addr_v4 = test_addr_v4.addr; - ASSERT_NO_ERRNO(SetAddrPort(test_addr_v4.family(), &addr_v4, port)); - const FileDescriptor fd_v4 = - ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr_v4.family(), param.type, 0)); - ASSERT_THAT(bind(fd_v4.get(), reinterpret_cast<sockaddr*>(&addr_v4), - test_addr_v4.addr_len), - SyscallFailsWithErrno(EADDRINUSE)); - - // No need to try again. - break; - } -} - -TEST_P(SocketMultiProtocolInetLoopbackTest, DualStackV6AnyReservesEverything) { - auto const& param = GetParam(); - - // Bind the v6 any on a dual stack socket. - TestAddress const& test_addr_dual = V6Any(); - sockaddr_storage addr_dual = test_addr_dual.addr; - const FileDescriptor fd_dual = - ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr_dual.family(), param.type, 0)); - ASSERT_THAT(bind(fd_dual.get(), reinterpret_cast<sockaddr*>(&addr_dual), - test_addr_dual.addr_len), - SyscallSucceeds()); - - // Get the port that we bound. - socklen_t addrlen = test_addr_dual.addr_len; - ASSERT_THAT(getsockname(fd_dual.get(), - reinterpret_cast<sockaddr*>(&addr_dual), &addrlen), - SyscallSucceeds()); - uint16_t const port = - ASSERT_NO_ERRNO_AND_VALUE(AddrPort(test_addr_dual.family(), addr_dual)); - - // Verify that binding the v6 loopback with the same port fails. - TestAddress const& test_addr_v6 = V6Loopback(); - sockaddr_storage addr_v6 = test_addr_v6.addr; - ASSERT_NO_ERRNO(SetAddrPort(test_addr_v6.family(), &addr_v6, port)); - const FileDescriptor fd_v6 = - ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr_v6.family(), param.type, 0)); - ASSERT_THAT(bind(fd_v6.get(), reinterpret_cast<sockaddr*>(&addr_v6), - test_addr_v6.addr_len), - SyscallFailsWithErrno(EADDRINUSE)); - - // Verify that binding the v4 loopback on the same port with a v6 socket - // fails. - TestAddress const& test_addr_v4_mapped = V4MappedLoopback(); - sockaddr_storage addr_v4_mapped = test_addr_v4_mapped.addr; - ASSERT_NO_ERRNO( - SetAddrPort(test_addr_v4_mapped.family(), &addr_v4_mapped, port)); - const FileDescriptor fd_v4_mapped = ASSERT_NO_ERRNO_AND_VALUE( - Socket(test_addr_v4_mapped.family(), param.type, 0)); - ASSERT_THAT( - bind(fd_v4_mapped.get(), reinterpret_cast<sockaddr*>(&addr_v4_mapped), - test_addr_v4_mapped.addr_len), - SyscallFailsWithErrno(EADDRINUSE)); - - // Verify that binding the v4 loopback on the same port with a v4 socket - // fails. - TestAddress const& test_addr_v4 = V4Loopback(); - sockaddr_storage addr_v4 = test_addr_v4.addr; - ASSERT_NO_ERRNO(SetAddrPort(test_addr_v4.family(), &addr_v4, port)); - const FileDescriptor fd_v4 = - ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr_v4.family(), param.type, 0)); - ASSERT_THAT(bind(fd_v4.get(), reinterpret_cast<sockaddr*>(&addr_v4), - test_addr_v4.addr_len), - SyscallFailsWithErrno(EADDRINUSE)); -} - -TEST_P(SocketMultiProtocolInetLoopbackTest, V6OnlyV6AnyReservesV6) { - auto const& param = GetParam(); - - for (int i = 0; true; i++) { - // Bind the v6 any on a v6-only socket. - TestAddress const& test_addr_dual = V6Any(); - sockaddr_storage addr_dual = test_addr_dual.addr; - const FileDescriptor fd_dual = ASSERT_NO_ERRNO_AND_VALUE( - Socket(test_addr_dual.family(), param.type, 0)); - EXPECT_THAT(setsockopt(fd_dual.get(), IPPROTO_IPV6, IPV6_V6ONLY, - &kSockOptOn, sizeof(kSockOptOn)), - SyscallSucceeds()); - ASSERT_THAT(bind(fd_dual.get(), reinterpret_cast<sockaddr*>(&addr_dual), - test_addr_dual.addr_len), - SyscallSucceeds()); - - // Get the port that we bound. - socklen_t addrlen = test_addr_dual.addr_len; - ASSERT_THAT(getsockname(fd_dual.get(), - reinterpret_cast<sockaddr*>(&addr_dual), &addrlen), - SyscallSucceeds()); - uint16_t const port = - ASSERT_NO_ERRNO_AND_VALUE(AddrPort(test_addr_dual.family(), addr_dual)); - - // Verify that binding the v6 loopback with the same port fails. - TestAddress const& test_addr_v6 = V6Loopback(); - sockaddr_storage addr_v6 = test_addr_v6.addr; - ASSERT_NO_ERRNO(SetAddrPort(test_addr_v6.family(), &addr_v6, port)); - const FileDescriptor fd_v6 = - ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr_v6.family(), param.type, 0)); - ASSERT_THAT(bind(fd_v6.get(), reinterpret_cast<sockaddr*>(&addr_v6), - test_addr_v6.addr_len), - SyscallFailsWithErrno(EADDRINUSE)); - - // Verify that we can still bind the v4 loopback on the same port. - TestAddress const& test_addr_v4_mapped = V4MappedLoopback(); - sockaddr_storage addr_v4_mapped = test_addr_v4_mapped.addr; - ASSERT_NO_ERRNO( - SetAddrPort(test_addr_v4_mapped.family(), &addr_v4_mapped, port)); - const FileDescriptor fd_v4_mapped = ASSERT_NO_ERRNO_AND_VALUE( - Socket(test_addr_v4_mapped.family(), param.type, 0)); - int ret = - bind(fd_v4_mapped.get(), reinterpret_cast<sockaddr*>(&addr_v4_mapped), - test_addr_v4_mapped.addr_len); - if (ret == -1 && errno == EADDRINUSE) { - // Port may have been in use. - ASSERT_LT(i, 100); // Give up after 100 tries. - continue; - } - ASSERT_THAT(ret, SyscallSucceeds()); - - // No need to try again. - break; - } -} - -TEST_P(SocketMultiProtocolInetLoopbackTest, V6EphemeralPortReserved) { - auto const& param = GetParam(); - - // FIXME(b/76031995): Support disabling SO_REUSEADDR for TCP sockets and make - // it disabled by default. - SKIP_IF(IsRunningOnGvisor() && param.type == SOCK_STREAM); - - for (int i = 0; true; i++) { - // Bind the v6 loopback on a dual stack socket. - TestAddress const& test_addr = V6Loopback(); - sockaddr_storage bound_addr = test_addr.addr; - const FileDescriptor bound_fd = - ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr.family(), param.type, 0)); - ASSERT_THAT(bind(bound_fd.get(), reinterpret_cast<sockaddr*>(&bound_addr), - test_addr.addr_len), - SyscallSucceeds()); - - // Listen iff TCP. - if (param.type == SOCK_STREAM) { - ASSERT_THAT(listen(bound_fd.get(), SOMAXCONN), SyscallSucceeds()); - } - - // Get the port that we bound. - socklen_t bound_addr_len = test_addr.addr_len; - ASSERT_THAT( - getsockname(bound_fd.get(), reinterpret_cast<sockaddr*>(&bound_addr), - &bound_addr_len), - SyscallSucceeds()); - - // Connect to bind an ephemeral port. - const FileDescriptor connected_fd = - ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr.family(), param.type, 0)); - ASSERT_THAT( - connect(connected_fd.get(), reinterpret_cast<sockaddr*>(&bound_addr), - bound_addr_len), - SyscallSucceeds()); - - // Get the ephemeral port. - sockaddr_storage connected_addr = {}; - socklen_t connected_addr_len = sizeof(connected_addr); - ASSERT_THAT(getsockname(connected_fd.get(), - reinterpret_cast<sockaddr*>(&connected_addr), - &connected_addr_len), - SyscallSucceeds()); - uint16_t const ephemeral_port = - ASSERT_NO_ERRNO_AND_VALUE(AddrPort(test_addr.family(), connected_addr)); - - // Verify that we actually got an ephemeral port. - ASSERT_NE(ephemeral_port, 0); - - // Verify that the ephemeral port is reserved. - const FileDescriptor checking_fd = - ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr.family(), param.type, 0)); - EXPECT_THAT( - bind(checking_fd.get(), reinterpret_cast<sockaddr*>(&connected_addr), - connected_addr_len), - SyscallFailsWithErrno(EADDRINUSE)); - - // Verify that binding the v6 loopback with the same port fails. - TestAddress const& test_addr_v6 = V6Loopback(); - sockaddr_storage addr_v6 = test_addr_v6.addr; - ASSERT_NO_ERRNO( - SetAddrPort(test_addr_v6.family(), &addr_v6, ephemeral_port)); - const FileDescriptor fd_v6 = - ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr_v6.family(), param.type, 0)); - ASSERT_THAT(bind(fd_v6.get(), reinterpret_cast<sockaddr*>(&addr_v6), - test_addr_v6.addr_len), - SyscallFailsWithErrno(EADDRINUSE)); - - // Verify that binding the v4 any with the same port fails. - TestAddress const& test_addr_v4_any = V4Any(); - sockaddr_storage addr_v4_any = test_addr_v4_any.addr; - ASSERT_NO_ERRNO( - SetAddrPort(test_addr_v4_any.family(), &addr_v4_any, ephemeral_port)); - const FileDescriptor fd_v4_any = ASSERT_NO_ERRNO_AND_VALUE( - Socket(test_addr_v4_any.family(), param.type, 0)); - ASSERT_THAT(bind(fd_v4_any.get(), reinterpret_cast<sockaddr*>(&addr_v4_any), - test_addr_v4_any.addr_len), - SyscallFailsWithErrno(EADDRINUSE)); - - // Verify that we can still bind the v4 loopback on the same port. - TestAddress const& test_addr_v4_mapped = V4MappedLoopback(); - sockaddr_storage addr_v4_mapped = test_addr_v4_mapped.addr; - ASSERT_NO_ERRNO(SetAddrPort(test_addr_v4_mapped.family(), &addr_v4_mapped, - ephemeral_port)); - const FileDescriptor fd_v4_mapped = ASSERT_NO_ERRNO_AND_VALUE( - Socket(test_addr_v4_mapped.family(), param.type, 0)); - int ret = - bind(fd_v4_mapped.get(), reinterpret_cast<sockaddr*>(&addr_v4_mapped), - test_addr_v4_mapped.addr_len); - if (ret == -1 && errno == EADDRINUSE) { - // Port may have been in use. - ASSERT_LT(i, 100); // Give up after 100 tries. - continue; - } - EXPECT_THAT(ret, SyscallSucceeds()); - - // No need to try again. - break; - } -} - -TEST_P(SocketMultiProtocolInetLoopbackTest, V6EphemeralPortReservedReuseAddr) { - auto const& param = GetParam(); - - // FIXME(b/129164367): Support SO_REUSEADDR on UDP sockets. - SKIP_IF(IsRunningOnGvisor() && param.type == SOCK_DGRAM); - - // Bind the v6 loopback on a dual stack socket. - TestAddress const& test_addr = V6Loopback(); - sockaddr_storage bound_addr = test_addr.addr; - const FileDescriptor bound_fd = - ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr.family(), param.type, 0)); - ASSERT_THAT(bind(bound_fd.get(), reinterpret_cast<sockaddr*>(&bound_addr), - test_addr.addr_len), - SyscallSucceeds()); - ASSERT_THAT(setsockopt(bound_fd.get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - - // Listen iff TCP. - if (param.type == SOCK_STREAM) { - ASSERT_THAT(listen(bound_fd.get(), SOMAXCONN), SyscallSucceeds()); - } - - // Get the port that we bound. - socklen_t bound_addr_len = test_addr.addr_len; - ASSERT_THAT( - getsockname(bound_fd.get(), reinterpret_cast<sockaddr*>(&bound_addr), - &bound_addr_len), - SyscallSucceeds()); - - // Connect to bind an ephemeral port. - const FileDescriptor connected_fd = - ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr.family(), param.type, 0)); - ASSERT_THAT(setsockopt(connected_fd.get(), SOL_SOCKET, SO_REUSEADDR, - &kSockOptOn, sizeof(kSockOptOn)), - SyscallSucceeds()); - ASSERT_THAT(connect(connected_fd.get(), - reinterpret_cast<sockaddr*>(&bound_addr), bound_addr_len), - SyscallSucceeds()); - - // Get the ephemeral port. - sockaddr_storage connected_addr = {}; - socklen_t connected_addr_len = sizeof(connected_addr); - ASSERT_THAT(getsockname(connected_fd.get(), - reinterpret_cast<sockaddr*>(&connected_addr), - &connected_addr_len), - SyscallSucceeds()); - uint16_t const ephemeral_port = - ASSERT_NO_ERRNO_AND_VALUE(AddrPort(test_addr.family(), connected_addr)); - - // Verify that we actually got an ephemeral port. - ASSERT_NE(ephemeral_port, 0); - - // Verify that the ephemeral port is not reserved. - const FileDescriptor checking_fd = - ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr.family(), param.type, 0)); - ASSERT_THAT(setsockopt(checking_fd.get(), SOL_SOCKET, SO_REUSEADDR, - &kSockOptOn, sizeof(kSockOptOn)), - SyscallSucceeds()); - EXPECT_THAT( - bind(checking_fd.get(), reinterpret_cast<sockaddr*>(&connected_addr), - connected_addr_len), - SyscallSucceeds()); -} - -TEST_P(SocketMultiProtocolInetLoopbackTest, V4MappedEphemeralPortReserved) { - auto const& param = GetParam(); - - // FIXME(b/76031995): Support disabling SO_REUSEADDR for TCP sockets and make - // it disabled by default. - SKIP_IF(IsRunningOnGvisor() && param.type == SOCK_STREAM); - - for (int i = 0; true; i++) { - // Bind the v4 loopback on a dual stack socket. - TestAddress const& test_addr = V4MappedLoopback(); - sockaddr_storage bound_addr = test_addr.addr; - const FileDescriptor bound_fd = - ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr.family(), param.type, 0)); - ASSERT_THAT(bind(bound_fd.get(), reinterpret_cast<sockaddr*>(&bound_addr), - test_addr.addr_len), - SyscallSucceeds()); - - // Listen iff TCP. - if (param.type == SOCK_STREAM) { - ASSERT_THAT(listen(bound_fd.get(), SOMAXCONN), SyscallSucceeds()); - } - - // Get the port that we bound. - socklen_t bound_addr_len = test_addr.addr_len; - ASSERT_THAT( - getsockname(bound_fd.get(), reinterpret_cast<sockaddr*>(&bound_addr), - &bound_addr_len), - SyscallSucceeds()); - - // Connect to bind an ephemeral port. - const FileDescriptor connected_fd = - ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr.family(), param.type, 0)); - ASSERT_THAT( - connect(connected_fd.get(), reinterpret_cast<sockaddr*>(&bound_addr), - bound_addr_len), - SyscallSucceeds()); - - // Get the ephemeral port. - sockaddr_storage connected_addr = {}; - socklen_t connected_addr_len = sizeof(connected_addr); - ASSERT_THAT(getsockname(connected_fd.get(), - reinterpret_cast<sockaddr*>(&connected_addr), - &connected_addr_len), - SyscallSucceeds()); - uint16_t const ephemeral_port = - ASSERT_NO_ERRNO_AND_VALUE(AddrPort(test_addr.family(), connected_addr)); - - // Verify that we actually got an ephemeral port. - ASSERT_NE(ephemeral_port, 0); - - // Verify that the ephemeral port is reserved. - const FileDescriptor checking_fd = - ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr.family(), param.type, 0)); - EXPECT_THAT( - bind(checking_fd.get(), reinterpret_cast<sockaddr*>(&connected_addr), - connected_addr_len), - SyscallFailsWithErrno(EADDRINUSE)); - - // Verify that binding the v4 loopback on the same port with a v4 socket - // fails. - TestAddress const& test_addr_v4 = V4Loopback(); - sockaddr_storage addr_v4 = test_addr_v4.addr; - ASSERT_NO_ERRNO( - SetAddrPort(test_addr_v4.family(), &addr_v4, ephemeral_port)); - const FileDescriptor fd_v4 = - ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr_v4.family(), param.type, 0)); - EXPECT_THAT(bind(fd_v4.get(), reinterpret_cast<sockaddr*>(&addr_v4), - test_addr_v4.addr_len), - SyscallFailsWithErrno(EADDRINUSE)); - - // Verify that binding the v6 any on the same port with a dual-stack socket - // fails. - TestAddress const& test_addr_v6_any = V6Any(); - sockaddr_storage addr_v6_any = test_addr_v6_any.addr; - ASSERT_NO_ERRNO( - SetAddrPort(test_addr_v6_any.family(), &addr_v6_any, ephemeral_port)); - const FileDescriptor fd_v6_any = ASSERT_NO_ERRNO_AND_VALUE( - Socket(test_addr_v6_any.family(), param.type, 0)); - ASSERT_THAT(bind(fd_v6_any.get(), reinterpret_cast<sockaddr*>(&addr_v6_any), - test_addr_v6_any.addr_len), - SyscallFailsWithErrno(EADDRINUSE)); - - // For some reason, binding the TCP v6-only any is flaky on Linux. Maybe we - // tend to run out of ephemeral ports? Regardless, binding the v6 loopback - // seems pretty reliable. Only try to bind the v6-only any on UDP and - // gVisor. - - int ret = -1; - - if (!IsRunningOnGvisor() && param.type == SOCK_STREAM) { - // Verify that we can still bind the v6 loopback on the same port. - TestAddress const& test_addr_v6 = V6Loopback(); - sockaddr_storage addr_v6 = test_addr_v6.addr; - ASSERT_NO_ERRNO( - SetAddrPort(test_addr_v6.family(), &addr_v6, ephemeral_port)); - const FileDescriptor fd_v6 = ASSERT_NO_ERRNO_AND_VALUE( - Socket(test_addr_v6.family(), param.type, 0)); - ret = bind(fd_v6.get(), reinterpret_cast<sockaddr*>(&addr_v6), - test_addr_v6.addr_len); - } else { - // Verify that we can still bind the v6 any on the same port with a - // v6-only socket. - const FileDescriptor fd_v6_only_any = ASSERT_NO_ERRNO_AND_VALUE( - Socket(test_addr_v6_any.family(), param.type, 0)); - EXPECT_THAT(setsockopt(fd_v6_only_any.get(), IPPROTO_IPV6, IPV6_V6ONLY, - &kSockOptOn, sizeof(kSockOptOn)), - SyscallSucceeds()); - ret = - bind(fd_v6_only_any.get(), reinterpret_cast<sockaddr*>(&addr_v6_any), - test_addr_v6_any.addr_len); - } - - if (ret == -1 && errno == EADDRINUSE) { - // Port may have been in use. - ASSERT_LT(i, 100); // Give up after 100 tries. - continue; - } - EXPECT_THAT(ret, SyscallSucceeds()); - - // No need to try again. - break; - } -} - -TEST_P(SocketMultiProtocolInetLoopbackTest, - V4MappedEphemeralPortReservedResueAddr) { - auto const& param = GetParam(); - - // FIXME(b/129164367): Support SO_REUSEADDR on UDP sockets. - SKIP_IF(IsRunningOnGvisor() && param.type == SOCK_DGRAM); - - // Bind the v4 loopback on a dual stack socket. - TestAddress const& test_addr = V4MappedLoopback(); - sockaddr_storage bound_addr = test_addr.addr; - const FileDescriptor bound_fd = - ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr.family(), param.type, 0)); - ASSERT_THAT(bind(bound_fd.get(), reinterpret_cast<sockaddr*>(&bound_addr), - test_addr.addr_len), - SyscallSucceeds()); - - ASSERT_THAT(setsockopt(bound_fd.get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - - // Listen iff TCP. - if (param.type == SOCK_STREAM) { - ASSERT_THAT(listen(bound_fd.get(), SOMAXCONN), SyscallSucceeds()); - } - - // Get the port that we bound. - socklen_t bound_addr_len = test_addr.addr_len; - ASSERT_THAT( - getsockname(bound_fd.get(), reinterpret_cast<sockaddr*>(&bound_addr), - &bound_addr_len), - SyscallSucceeds()); - - // Connect to bind an ephemeral port. - const FileDescriptor connected_fd = - ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr.family(), param.type, 0)); - ASSERT_THAT(setsockopt(connected_fd.get(), SOL_SOCKET, SO_REUSEADDR, - &kSockOptOn, sizeof(kSockOptOn)), - SyscallSucceeds()); - ASSERT_THAT(connect(connected_fd.get(), - reinterpret_cast<sockaddr*>(&bound_addr), bound_addr_len), - SyscallSucceeds()); - - // Get the ephemeral port. - sockaddr_storage connected_addr = {}; - socklen_t connected_addr_len = sizeof(connected_addr); - ASSERT_THAT(getsockname(connected_fd.get(), - reinterpret_cast<sockaddr*>(&connected_addr), - &connected_addr_len), - SyscallSucceeds()); - uint16_t const ephemeral_port = - ASSERT_NO_ERRNO_AND_VALUE(AddrPort(test_addr.family(), connected_addr)); - - // Verify that we actually got an ephemeral port. - ASSERT_NE(ephemeral_port, 0); - - // Verify that the ephemeral port is not reserved. - const FileDescriptor checking_fd = - ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr.family(), param.type, 0)); - ASSERT_THAT(setsockopt(checking_fd.get(), SOL_SOCKET, SO_REUSEADDR, - &kSockOptOn, sizeof(kSockOptOn)), - SyscallSucceeds()); - EXPECT_THAT( - bind(checking_fd.get(), reinterpret_cast<sockaddr*>(&connected_addr), - connected_addr_len), - SyscallSucceeds()); -} - -TEST_P(SocketMultiProtocolInetLoopbackTest, V4EphemeralPortReserved) { - auto const& param = GetParam(); - - // FIXME(b/76031995): Support disabling SO_REUSEADDR for TCP sockets and make - // it disabled by default. - SKIP_IF(IsRunningOnGvisor() && param.type == SOCK_STREAM); - - for (int i = 0; true; i++) { - // Bind the v4 loopback on a v4 socket. - TestAddress const& test_addr = V4Loopback(); - sockaddr_storage bound_addr = test_addr.addr; - const FileDescriptor bound_fd = - ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr.family(), param.type, 0)); - ASSERT_THAT(bind(bound_fd.get(), reinterpret_cast<sockaddr*>(&bound_addr), - test_addr.addr_len), - SyscallSucceeds()); - - // Listen iff TCP. - if (param.type == SOCK_STREAM) { - ASSERT_THAT(listen(bound_fd.get(), SOMAXCONN), SyscallSucceeds()); - } - - // Get the port that we bound. - socklen_t bound_addr_len = test_addr.addr_len; - ASSERT_THAT( - getsockname(bound_fd.get(), reinterpret_cast<sockaddr*>(&bound_addr), - &bound_addr_len), - SyscallSucceeds()); - - // Connect to bind an ephemeral port. - const FileDescriptor connected_fd = - ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr.family(), param.type, 0)); - ASSERT_THAT( - connect(connected_fd.get(), reinterpret_cast<sockaddr*>(&bound_addr), - bound_addr_len), - SyscallSucceeds()); - - // Get the ephemeral port. - sockaddr_storage connected_addr = {}; - socklen_t connected_addr_len = sizeof(connected_addr); - ASSERT_THAT(getsockname(connected_fd.get(), - reinterpret_cast<sockaddr*>(&connected_addr), - &connected_addr_len), - SyscallSucceeds()); - uint16_t const ephemeral_port = - ASSERT_NO_ERRNO_AND_VALUE(AddrPort(test_addr.family(), connected_addr)); - - // Verify that we actually got an ephemeral port. - ASSERT_NE(ephemeral_port, 0); - - // Verify that the ephemeral port is reserved. - const FileDescriptor checking_fd = - ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr.family(), param.type, 0)); - EXPECT_THAT( - bind(checking_fd.get(), reinterpret_cast<sockaddr*>(&connected_addr), - connected_addr_len), - SyscallFailsWithErrno(EADDRINUSE)); - - // Verify that binding the v4 loopback on the same port with a v6 socket - // fails. - TestAddress const& test_addr_v4_mapped = V4MappedLoopback(); - sockaddr_storage addr_v4_mapped = test_addr_v4_mapped.addr; - ASSERT_NO_ERRNO(SetAddrPort(test_addr_v4_mapped.family(), &addr_v4_mapped, - ephemeral_port)); - const FileDescriptor fd_v4_mapped = ASSERT_NO_ERRNO_AND_VALUE( - Socket(test_addr_v4_mapped.family(), param.type, 0)); - EXPECT_THAT( - bind(fd_v4_mapped.get(), reinterpret_cast<sockaddr*>(&addr_v4_mapped), - test_addr_v4_mapped.addr_len), - SyscallFailsWithErrno(EADDRINUSE)); - - // Verify that binding the v6 any on the same port with a dual-stack socket - // fails. - TestAddress const& test_addr_v6_any = V6Any(); - sockaddr_storage addr_v6_any = test_addr_v6_any.addr; - ASSERT_NO_ERRNO( - SetAddrPort(test_addr_v6_any.family(), &addr_v6_any, ephemeral_port)); - const FileDescriptor fd_v6_any = ASSERT_NO_ERRNO_AND_VALUE( - Socket(test_addr_v6_any.family(), param.type, 0)); - ASSERT_THAT(bind(fd_v6_any.get(), reinterpret_cast<sockaddr*>(&addr_v6_any), - test_addr_v6_any.addr_len), - SyscallFailsWithErrno(EADDRINUSE)); - - // For some reason, binding the TCP v6-only any is flaky on Linux. Maybe we - // tend to run out of ephemeral ports? Regardless, binding the v6 loopback - // seems pretty reliable. Only try to bind the v6-only any on UDP and - // gVisor. - - int ret = -1; - - if (!IsRunningOnGvisor() && param.type == SOCK_STREAM) { - // Verify that we can still bind the v6 loopback on the same port. - TestAddress const& test_addr_v6 = V6Loopback(); - sockaddr_storage addr_v6 = test_addr_v6.addr; - ASSERT_NO_ERRNO( - SetAddrPort(test_addr_v6.family(), &addr_v6, ephemeral_port)); - const FileDescriptor fd_v6 = ASSERT_NO_ERRNO_AND_VALUE( - Socket(test_addr_v6.family(), param.type, 0)); - ret = bind(fd_v6.get(), reinterpret_cast<sockaddr*>(&addr_v6), - test_addr_v6.addr_len); - } else { - // Verify that we can still bind the v6 any on the same port with a - // v6-only socket. - const FileDescriptor fd_v6_only_any = ASSERT_NO_ERRNO_AND_VALUE( - Socket(test_addr_v6_any.family(), param.type, 0)); - EXPECT_THAT(setsockopt(fd_v6_only_any.get(), IPPROTO_IPV6, IPV6_V6ONLY, - &kSockOptOn, sizeof(kSockOptOn)), - SyscallSucceeds()); - ret = - bind(fd_v6_only_any.get(), reinterpret_cast<sockaddr*>(&addr_v6_any), - test_addr_v6_any.addr_len); - } - - if (ret == -1 && errno == EADDRINUSE) { - // Port may have been in use. - ASSERT_LT(i, 100); // Give up after 100 tries. - continue; - } - EXPECT_THAT(ret, SyscallSucceeds()); - - // No need to try again. - break; - } -} - -TEST_P(SocketMultiProtocolInetLoopbackTest, V4EphemeralPortReservedReuseAddr) { - auto const& param = GetParam(); - - // FIXME(b/129164367): Support SO_REUSEADDR on UDP sockets. - SKIP_IF(IsRunningOnGvisor() && param.type == SOCK_DGRAM); - - // Bind the v4 loopback on a v4 socket. - TestAddress const& test_addr = V4Loopback(); - sockaddr_storage bound_addr = test_addr.addr; - const FileDescriptor bound_fd = - ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr.family(), param.type, 0)); - - ASSERT_THAT(setsockopt(bound_fd.get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - - ASSERT_THAT(bind(bound_fd.get(), reinterpret_cast<sockaddr*>(&bound_addr), - test_addr.addr_len), - SyscallSucceeds()); - - // Listen iff TCP. - if (param.type == SOCK_STREAM) { - ASSERT_THAT(listen(bound_fd.get(), SOMAXCONN), SyscallSucceeds()); - } - - // Get the port that we bound. - socklen_t bound_addr_len = test_addr.addr_len; - ASSERT_THAT( - getsockname(bound_fd.get(), reinterpret_cast<sockaddr*>(&bound_addr), - &bound_addr_len), - SyscallSucceeds()); - - // Connect to bind an ephemeral port. - const FileDescriptor connected_fd = - ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr.family(), param.type, 0)); - - ASSERT_THAT(setsockopt(connected_fd.get(), SOL_SOCKET, SO_REUSEADDR, - &kSockOptOn, sizeof(kSockOptOn)), - SyscallSucceeds()); - - ASSERT_THAT(connect(connected_fd.get(), - reinterpret_cast<sockaddr*>(&bound_addr), bound_addr_len), - SyscallSucceeds()); - - // Get the ephemeral port. - sockaddr_storage connected_addr = {}; - socklen_t connected_addr_len = sizeof(connected_addr); - ASSERT_THAT(getsockname(connected_fd.get(), - reinterpret_cast<sockaddr*>(&connected_addr), - &connected_addr_len), - SyscallSucceeds()); - uint16_t const ephemeral_port = - ASSERT_NO_ERRNO_AND_VALUE(AddrPort(test_addr.family(), connected_addr)); - - // Verify that we actually got an ephemeral port. - ASSERT_NE(ephemeral_port, 0); - - // Verify that the ephemeral port is not reserved. - const FileDescriptor checking_fd = - ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr.family(), param.type, 0)); - ASSERT_THAT(setsockopt(checking_fd.get(), SOL_SOCKET, SO_REUSEADDR, - &kSockOptOn, sizeof(kSockOptOn)), - SyscallSucceeds()); - EXPECT_THAT( - bind(checking_fd.get(), reinterpret_cast<sockaddr*>(&connected_addr), - connected_addr_len), - SyscallSucceeds()); -} - -TEST_P(SocketMultiProtocolInetLoopbackTest, PortReuseTwoSockets) { - auto const& param = GetParam(); - TestAddress const& test_addr = V4Loopback(); - sockaddr_storage addr = test_addr.addr; - - for (int i = 0; i < 2; i++) { - const int portreuse1 = i % 2; - auto s1 = - ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr.family(), param.type, 0)); - int fd1 = s1.get(); - socklen_t addrlen = test_addr.addr_len; - - EXPECT_THAT( - setsockopt(fd1, SOL_SOCKET, SO_REUSEPORT, &portreuse1, sizeof(int)), - SyscallSucceeds()); - - ASSERT_THAT(bind(fd1, reinterpret_cast<sockaddr*>(&addr), addrlen), - SyscallSucceeds()); - - ASSERT_THAT(getsockname(fd1, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - if (param.type == SOCK_STREAM) { - ASSERT_THAT(listen(fd1, 1), SyscallSucceeds()); - } - - // j is less than 4 to check that the port reuse logic works correctly after - // closing bound sockets. - for (int j = 0; j < 4; j++) { - const int portreuse2 = j % 2; - auto s2 = - ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr.family(), param.type, 0)); - int fd2 = s2.get(); - - EXPECT_THAT( - setsockopt(fd2, SOL_SOCKET, SO_REUSEPORT, &portreuse2, sizeof(int)), - SyscallSucceeds()); - - std::cout << portreuse1 << " " << portreuse2; - int ret = bind(fd2, reinterpret_cast<sockaddr*>(&addr), addrlen); - - // Verify that two sockets can be bound to the same port only if - // SO_REUSEPORT is set for both of them. - if (!portreuse1 || !portreuse2) { - ASSERT_THAT(ret, SyscallFailsWithErrno(EADDRINUSE)); - } else { - ASSERT_THAT(ret, SyscallSucceeds()); - } - } - } -} - -// Check that when a socket was bound to an address with REUSEPORT and then -// closed, we can bind a different socket to the same address without needing -// REUSEPORT. -TEST_P(SocketMultiProtocolInetLoopbackTest, NoReusePortFollowingReusePort) { - auto const& param = GetParam(); - TestAddress const& test_addr = V4Loopback(); - sockaddr_storage addr = test_addr.addr; - - auto s = ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr.family(), param.type, 0)); - int fd = s.get(); - socklen_t addrlen = test_addr.addr_len; - int portreuse = 1; - ASSERT_THAT( - setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &portreuse, sizeof(portreuse)), - SyscallSucceeds()); - ASSERT_THAT(bind(fd, reinterpret_cast<sockaddr*>(&addr), addrlen), - SyscallSucceeds()); - ASSERT_THAT(getsockname(fd, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - ASSERT_EQ(addrlen, test_addr.addr_len); - - s.reset(); - - // Open a new socket and bind to the same address, but w/o REUSEPORT. - s = ASSERT_NO_ERRNO_AND_VALUE(Socket(test_addr.family(), param.type, 0)); - fd = s.get(); - portreuse = 0; - ASSERT_THAT( - setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &portreuse, sizeof(portreuse)), - SyscallSucceeds()); - ASSERT_THAT(bind(fd, reinterpret_cast<sockaddr*>(&addr), addrlen), - SyscallSucceeds()); -} - -INSTANTIATE_TEST_SUITE_P( - AllFamilies, SocketMultiProtocolInetLoopbackTest, - ::testing::Values(ProtocolTestParam{"TCP", SOCK_STREAM}, - ProtocolTestParam{"UDP", SOCK_DGRAM}), - DescribeProtocolTestParam); - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_ip_loopback_blocking.cc b/test/syscalls/linux/socket_ip_loopback_blocking.cc deleted file mode 100644 index fda252dd7..000000000 --- a/test/syscalls/linux/socket_ip_loopback_blocking.cc +++ /dev/null @@ -1,49 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <netinet/tcp.h> - -#include <vector> - -#include "test/syscalls/linux/ip_socket_test_util.h" -#include "test/syscalls/linux/socket_blocking.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -std::vector<SocketPairKind> GetSocketPairs() { - return VecCat<SocketPairKind>( - std::vector<SocketPairKind>{ - IPv6UDPBidirectionalBindSocketPair(0), - IPv4UDPBidirectionalBindSocketPair(0), - }, - ApplyVecToVec<SocketPairKind>( - std::vector<Middleware>{ - NoOp, SetSockOpt(IPPROTO_TCP, TCP_NODELAY, &kSockOptOn)}, - std::vector<SocketPairKind>{ - IPv6TCPAcceptBindSocketPair(0), - IPv4TCPAcceptBindSocketPair(0), - })); -} - -INSTANTIATE_TEST_SUITE_P( - BlockingIPSockets, BlockingSocketPairTest, - ::testing::ValuesIn(IncludeReversals(GetSocketPairs()))); - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_ip_tcp_generic.cc b/test/syscalls/linux/socket_ip_tcp_generic.cc deleted file mode 100644 index 27779e47c..000000000 --- a/test/syscalls/linux/socket_ip_tcp_generic.cc +++ /dev/null @@ -1,912 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/syscalls/linux/socket_ip_tcp_generic.h" - -#include <netinet/in.h> -#include <netinet/tcp.h> -#include <poll.h> -#include <stdio.h> -#include <sys/ioctl.h> -#include <sys/socket.h> -#include <sys/types.h> -#include <sys/un.h> - -#include "gtest/gtest.h" -#include "absl/memory/memory.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { - -TEST_P(TCPSocketPairTest, TcpInfoSucceeds) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - struct tcp_info opt = {}; - socklen_t optLen = sizeof(opt); - EXPECT_THAT(getsockopt(sockets->first_fd(), SOL_TCP, TCP_INFO, &opt, &optLen), - SyscallSucceeds()); -} - -TEST_P(TCPSocketPairTest, ShortTcpInfoSucceeds) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - struct tcp_info opt = {}; - socklen_t optLen = 1; - EXPECT_THAT(getsockopt(sockets->first_fd(), SOL_TCP, TCP_INFO, &opt, &optLen), - SyscallSucceeds()); -} - -TEST_P(TCPSocketPairTest, ZeroTcpInfoSucceeds) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - struct tcp_info opt = {}; - socklen_t optLen = 0; - EXPECT_THAT(getsockopt(sockets->first_fd(), SOL_TCP, TCP_INFO, &opt, &optLen), - SyscallSucceeds()); -} - -// This test validates that an RST is sent instead of a FIN when data is -// unread on calls to close(2). -TEST_P(TCPSocketPairTest, RSTSentOnCloseWithUnreadData) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char buf[10] = {}; - ASSERT_THAT(RetryEINTR(write)(sockets->first_fd(), buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - - // Wait until t_ sees the data on its side but don't read it. - struct pollfd poll_fd = {sockets->second_fd(), POLLIN | POLLHUP, 0}; - constexpr int kPollTimeoutMs = 20000; // Wait up to 20 seconds for the data. - ASSERT_THAT(RetryEINTR(poll)(&poll_fd, 1, kPollTimeoutMs), - SyscallSucceedsWithValue(1)); - - // Now close the connected without reading the data. - ASSERT_THAT(close(sockets->release_second_fd()), SyscallSucceeds()); - - // Wait for the other end to receive the RST (up to 20 seconds). - struct pollfd poll_fd2 = {sockets->first_fd(), POLLIN | POLLHUP, 0}; - ASSERT_THAT(RetryEINTR(poll)(&poll_fd2, 1, kPollTimeoutMs), - SyscallSucceedsWithValue(1)); - - // A shutdown with unread data will cause a RST to be sent instead - // of a FIN, per RFC 2525 section 2.17; this is also what Linux does. - ASSERT_THAT(RetryEINTR(read)(sockets->first_fd(), buf, sizeof(buf)), - SyscallFailsWithErrno(ECONNRESET)); -} - -// This test will validate that a RST will cause POLLHUP to trigger. -TEST_P(TCPSocketPairTest, RSTCausesPollHUP) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char buf[10] = {}; - ASSERT_THAT(RetryEINTR(write)(sockets->first_fd(), buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - - // Wait until second sees the data on its side but don't read it. - struct pollfd poll_fd = {sockets->second_fd(), POLLIN, 0}; - constexpr int kPollTimeoutMs = 20000; // Wait up to 20 seconds for the data. - ASSERT_THAT(RetryEINTR(poll)(&poll_fd, 1, kPollTimeoutMs), - SyscallSucceedsWithValue(1)); - EXPECT_EQ(poll_fd.revents & POLLIN, POLLIN); - - // Confirm we at least have one unread byte. - int bytes_available = 0; - ASSERT_THAT( - RetryEINTR(ioctl)(sockets->second_fd(), FIONREAD, &bytes_available), - SyscallSucceeds()); - EXPECT_GT(bytes_available, 0); - - // Now close the connected socket without reading the data from the second, - // this will cause a RST and we should see that with POLLHUP. - ASSERT_THAT(close(sockets->release_second_fd()), SyscallSucceeds()); - - // Wait for the other end to receive the RST (up to 20 seconds). - struct pollfd poll_fd3 = {sockets->first_fd(), POLLHUP, 0}; - ASSERT_THAT(RetryEINTR(poll)(&poll_fd3, 1, kPollTimeoutMs), - SyscallSucceedsWithValue(1)); - ASSERT_NE(poll_fd3.revents & POLLHUP, 0); -} - -// This test validates that even if a RST is sent the other end will not -// get an ECONNRESET until it's read all data. -TEST_P(TCPSocketPairTest, RSTSentOnCloseWithUnreadDataAllowsReadBuffered) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char buf[10] = {}; - ASSERT_THAT(RetryEINTR(write)(sockets->first_fd(), buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - ASSERT_THAT(RetryEINTR(write)(sockets->second_fd(), buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - - // Wait until second sees the data on its side but don't read it. - struct pollfd poll_fd = {sockets->second_fd(), POLLIN, 0}; - constexpr int kPollTimeoutMs = 30000; // Wait up to 30 seconds for the data. - ASSERT_THAT(RetryEINTR(poll)(&poll_fd, 1, kPollTimeoutMs), - SyscallSucceedsWithValue(1)); - - // Wait until first sees the data on its side but don't read it. - struct pollfd poll_fd2 = {sockets->first_fd(), POLLIN, 0}; - ASSERT_THAT(RetryEINTR(poll)(&poll_fd2, 1, kPollTimeoutMs), - SyscallSucceedsWithValue(1)); - - // Now close the connected socket without reading the data from the second. - ASSERT_THAT(close(sockets->release_second_fd()), SyscallSucceeds()); - - // Wait for the other end to receive the RST (up to 30 seconds). - struct pollfd poll_fd3 = {sockets->first_fd(), POLLHUP, 0}; - ASSERT_THAT(RetryEINTR(poll)(&poll_fd3, 1, kPollTimeoutMs), - SyscallSucceedsWithValue(1)); - - // Since we also have data buffered we should be able to read it before - // the syscall will fail with ECONNRESET. - ASSERT_THAT(RetryEINTR(read)(sockets->first_fd(), buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - - // A shutdown with unread data will cause a RST to be sent instead - // of a FIN, per RFC 2525 section 2.17; this is also what Linux does. - ASSERT_THAT(RetryEINTR(read)(sockets->first_fd(), buf, sizeof(buf)), - SyscallFailsWithErrno(ECONNRESET)); -} - -// This test will verify that a clean shutdown (FIN) is preformed when there -// is unread data but only the write side is closed. -TEST_P(TCPSocketPairTest, FINSentOnShutdownWrWithUnreadData) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char buf[10] = {}; - ASSERT_THAT(RetryEINTR(write)(sockets->first_fd(), buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - - // Wait until t_ sees the data on its side but don't read it. - struct pollfd poll_fd = {sockets->second_fd(), POLLIN | POLLHUP, 0}; - constexpr int kPollTimeoutMs = 20000; // Wait up to 20 seconds for the data. - ASSERT_THAT(RetryEINTR(poll)(&poll_fd, 1, kPollTimeoutMs), - SyscallSucceedsWithValue(1)); - - // Now shutdown the write end leaving the read end open. - ASSERT_THAT(shutdown(sockets->second_fd(), SHUT_WR), SyscallSucceeds()); - - // Wait for the other end to receive the FIN (up to 20 seconds). - struct pollfd poll_fd2 = {sockets->first_fd(), POLLIN | POLLHUP, 0}; - ASSERT_THAT(RetryEINTR(poll)(&poll_fd2, 1, kPollTimeoutMs), - SyscallSucceedsWithValue(1)); - - // Since we didn't shutdown the read end this will be a clean close. - ASSERT_THAT(RetryEINTR(read)(sockets->first_fd(), buf, sizeof(buf)), - SyscallSucceedsWithValue(0)); -} - -// This test will verify that when data is received by a socket, even if it's -// not read SHUT_RD will not cause any packets to be generated. -TEST_P(TCPSocketPairTest, ShutdownRdShouldCauseNoPacketsWithUnreadData) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char buf[10] = {}; - ASSERT_THAT(RetryEINTR(write)(sockets->first_fd(), buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - - // Wait until t_ sees the data on its side but don't read it. - struct pollfd poll_fd = {sockets->second_fd(), POLLIN | POLLHUP, 0}; - constexpr int kPollTimeoutMs = 20000; // Wait up to 20 seconds for the data. - ASSERT_THAT(RetryEINTR(poll)(&poll_fd, 1, kPollTimeoutMs), - SyscallSucceedsWithValue(1)); - - // Now shutdown the read end, this will generate no packets to the other end. - ASSERT_THAT(shutdown(sockets->second_fd(), SHUT_RD), SyscallSucceeds()); - - // We should not receive any events on the other side of the socket. - struct pollfd poll_fd2 = {sockets->first_fd(), POLLIN | POLLHUP, 0}; - constexpr int kPollNoResponseTimeoutMs = 3000; - ASSERT_THAT(RetryEINTR(poll)(&poll_fd2, 1, kPollNoResponseTimeoutMs), - SyscallSucceedsWithValue(0)); // Timeout. -} - -// This test will verify that a socket which has unread data will still allow -// the data to be read after shutting down the read side, and once there is no -// unread data left, then read will return an EOF. -TEST_P(TCPSocketPairTest, ShutdownRdAllowsReadOfReceivedDataBeforeEOF) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char buf[10] = {}; - ASSERT_THAT(RetryEINTR(write)(sockets->first_fd(), buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - - // Wait until t_ sees the data on its side but don't read it. - struct pollfd poll_fd = {sockets->second_fd(), POLLIN | POLLHUP, 0}; - constexpr int kPollTimeoutMs = 20000; // Wait up to 20 seconds for the data. - ASSERT_THAT(RetryEINTR(poll)(&poll_fd, 1, kPollTimeoutMs), - SyscallSucceedsWithValue(1)); - - // Now shutdown the read end. - ASSERT_THAT(shutdown(sockets->second_fd(), SHUT_RD), SyscallSucceeds()); - - // Even though we did a SHUT_RD on the read end we can still read the data. - ASSERT_THAT(RetryEINTR(read)(sockets->second_fd(), buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - - // After reading all of the data, reading the closed read end returns EOF. - ASSERT_THAT(RetryEINTR(poll)(&poll_fd, 1, kPollTimeoutMs), - SyscallSucceedsWithValue(1)); - ASSERT_THAT(RetryEINTR(read)(sockets->second_fd(), buf, sizeof(buf)), - SyscallSucceedsWithValue(0)); -} - -// This test verifies that a shutdown(wr) by the server after sending -// data allows the client to still read() the queued data and a client -// close after sending response allows server to read the incoming -// response. -TEST_P(TCPSocketPairTest, ShutdownWrServerClientClose) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - char buf[10] = {}; - ScopedThread t([&]() { - ASSERT_THAT(RetryEINTR(read)(sockets->first_fd(), buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - ASSERT_THAT(RetryEINTR(write)(sockets->first_fd(), buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - ASSERT_THAT(close(sockets->release_first_fd()), - SyscallSucceedsWithValue(0)); - }); - ASSERT_THAT(RetryEINTR(write)(sockets->second_fd(), buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - ASSERT_THAT(RetryEINTR(shutdown)(sockets->second_fd(), SHUT_WR), - SyscallSucceedsWithValue(0)); - t.Join(); - - ASSERT_THAT(RetryEINTR(read)(sockets->second_fd(), buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); -} - -TEST_P(TCPSocketPairTest, ClosedReadNonBlockingSocket) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - // Set the read end to O_NONBLOCK. - int opts = 0; - ASSERT_THAT(opts = fcntl(sockets->second_fd(), F_GETFL), SyscallSucceeds()); - ASSERT_THAT(fcntl(sockets->second_fd(), F_SETFL, opts | O_NONBLOCK), - SyscallSucceeds()); - - char buf[10] = {}; - ASSERT_THAT(RetryEINTR(send)(sockets->first_fd(), buf, sizeof(buf), 0), - SyscallSucceedsWithValue(sizeof(buf))); - - // Wait until second_fd sees the data and then recv it. - struct pollfd poll_fd = {sockets->second_fd(), POLLIN, 0}; - constexpr int kPollTimeoutMs = 2000; // Wait up to 2 seconds for the data. - ASSERT_THAT(RetryEINTR(poll)(&poll_fd, 1, kPollTimeoutMs), - SyscallSucceedsWithValue(1)); - - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), buf, sizeof(buf), 0), - SyscallSucceedsWithValue(sizeof(buf))); - - // Now shutdown the write end leaving the read end open. - ASSERT_THAT(close(sockets->release_first_fd()), SyscallSucceeds()); - - // Wait for close notification and recv again. - struct pollfd poll_fd2 = {sockets->second_fd(), POLLIN, 0}; - ASSERT_THAT(RetryEINTR(poll)(&poll_fd2, 1, kPollTimeoutMs), - SyscallSucceedsWithValue(1)); - - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), buf, sizeof(buf), 0), - SyscallSucceedsWithValue(0)); -} - -TEST_P(TCPSocketPairTest, - ShutdownRdUnreadDataShouldCauseNoPacketsUnlessClosed) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char buf[10] = {}; - ASSERT_THAT(RetryEINTR(write)(sockets->first_fd(), buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - - // Wait until t_ sees the data on its side but don't read it. - struct pollfd poll_fd = {sockets->second_fd(), POLLIN | POLLHUP, 0}; - constexpr int kPollTimeoutMs = 20000; // Wait up to 20 seconds for the data. - ASSERT_THAT(RetryEINTR(poll)(&poll_fd, 1, kPollTimeoutMs), - SyscallSucceedsWithValue(1)); - - // Now shutdown the read end, this will generate no packets to the other end. - ASSERT_THAT(shutdown(sockets->second_fd(), SHUT_RD), SyscallSucceeds()); - - // We should not receive any events on the other side of the socket. - struct pollfd poll_fd2 = {sockets->first_fd(), POLLIN | POLLHUP, 0}; - constexpr int kPollNoResponseTimeoutMs = 3000; - ASSERT_THAT(RetryEINTR(poll)(&poll_fd2, 1, kPollNoResponseTimeoutMs), - SyscallSucceedsWithValue(0)); // Timeout. - - // Now since we've fully closed the connection it will generate a RST. - ASSERT_THAT(close(sockets->release_second_fd()), SyscallSucceeds()); - ASSERT_THAT(RetryEINTR(poll)(&poll_fd2, 1, kPollTimeoutMs), - SyscallSucceedsWithValue(1)); // The other end has closed. - - // A shutdown with unread data will cause a RST to be sent instead - // of a FIN, per RFC 2525 section 2.17; this is also what Linux does. - ASSERT_THAT(RetryEINTR(read)(sockets->first_fd(), buf, sizeof(buf)), - SyscallFailsWithErrno(ECONNRESET)); -} - -TEST_P(TCPSocketPairTest, TCPCorkDefault) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - int get = -1; - socklen_t get_len = sizeof(get); - EXPECT_THAT( - getsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_CORK, &get, &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kSockOptOff); -} - -TEST_P(TCPSocketPairTest, SetTCPCork) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_CORK, - &kSockOptOn, sizeof(kSockOptOn)), - SyscallSucceeds()); - - int get = -1; - socklen_t get_len = sizeof(get); - EXPECT_THAT( - getsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_CORK, &get, &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kSockOptOn); - - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_CORK, - &kSockOptOff, sizeof(kSockOptOff)), - SyscallSucceeds()); - - EXPECT_THAT( - getsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_CORK, &get, &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kSockOptOff); -} - -TEST_P(TCPSocketPairTest, TCPCork) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_CORK, - &kSockOptOn, sizeof(kSockOptOn)), - SyscallSucceeds()); - - constexpr char kData[] = "abc"; - ASSERT_THAT(WriteFd(sockets->first_fd(), kData, sizeof(kData)), - SyscallSucceedsWithValue(sizeof(kData))); - - ASSERT_NO_FATAL_FAILURE(RecvNoData(sockets->second_fd())); - - EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_CORK, - &kSockOptOff, sizeof(kSockOptOff)), - SyscallSucceeds()); - - // Create a receive buffer larger than kData. - char buf[(sizeof(kData) + 1) * 2] = {}; - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), buf, sizeof(buf), 0), - SyscallSucceedsWithValue(sizeof(kData))); - EXPECT_EQ(absl::string_view(kData, sizeof(kData)), - absl::string_view(buf, sizeof(kData))); -} - -TEST_P(TCPSocketPairTest, TCPQuickAckDefault) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - int get = -1; - socklen_t get_len = sizeof(get); - EXPECT_THAT(getsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_QUICKACK, &get, - &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kSockOptOn); -} - -TEST_P(TCPSocketPairTest, SetTCPQuickAck) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_QUICKACK, - &kSockOptOff, sizeof(kSockOptOff)), - SyscallSucceeds()); - - int get = -1; - socklen_t get_len = sizeof(get); - EXPECT_THAT(getsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_QUICKACK, &get, - &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kSockOptOff); - - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_QUICKACK, - &kSockOptOn, sizeof(kSockOptOn)), - SyscallSucceeds()); - - EXPECT_THAT(getsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_QUICKACK, &get, - &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kSockOptOn); -} - -TEST_P(TCPSocketPairTest, SoKeepaliveDefault) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - int get = -1; - socklen_t get_len = sizeof(get); - EXPECT_THAT( - getsockopt(sockets->first_fd(), SOL_SOCKET, SO_KEEPALIVE, &get, &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kSockOptOff); -} - -TEST_P(TCPSocketPairTest, SetSoKeepalive) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(setsockopt(sockets->first_fd(), SOL_SOCKET, SO_KEEPALIVE, - &kSockOptOn, sizeof(kSockOptOn)), - SyscallSucceeds()); - - int get = -1; - socklen_t get_len = sizeof(get); - EXPECT_THAT( - getsockopt(sockets->first_fd(), SOL_SOCKET, SO_KEEPALIVE, &get, &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kSockOptOn); - - ASSERT_THAT(setsockopt(sockets->first_fd(), SOL_SOCKET, SO_KEEPALIVE, - &kSockOptOff, sizeof(kSockOptOff)), - SyscallSucceeds()); - - EXPECT_THAT( - getsockopt(sockets->first_fd(), SOL_SOCKET, SO_KEEPALIVE, &get, &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kSockOptOff); -} - -TEST_P(TCPSocketPairTest, TCPKeepidleDefault) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - int get = -1; - socklen_t get_len = sizeof(get); - EXPECT_THAT(getsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_KEEPIDLE, &get, - &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, 2 * 60 * 60); // 2 hours. -} - -TEST_P(TCPSocketPairTest, TCPKeepintvlDefault) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - int get = -1; - socklen_t get_len = sizeof(get); - EXPECT_THAT(getsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_KEEPINTVL, &get, - &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, 75); // 75 seconds. -} - -TEST_P(TCPSocketPairTest, SetTCPKeepidleZero) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - constexpr int kZero = 0; - EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_KEEPIDLE, &kZero, - sizeof(kZero)), - SyscallFailsWithErrno(EINVAL)); -} - -TEST_P(TCPSocketPairTest, SetTCPKeepintvlZero) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - constexpr int kZero = 0; - EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_KEEPINTVL, - &kZero, sizeof(kZero)), - SyscallFailsWithErrno(EINVAL)); -} - -// Copied from include/net/tcp.h. -constexpr int MAX_TCP_KEEPIDLE = 32767; -constexpr int MAX_TCP_KEEPINTVL = 32767; - -TEST_P(TCPSocketPairTest, SetTCPKeepidleAboveMax) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - constexpr int kAboveMax = MAX_TCP_KEEPIDLE + 1; - EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_KEEPIDLE, - &kAboveMax, sizeof(kAboveMax)), - SyscallFailsWithErrno(EINVAL)); -} - -TEST_P(TCPSocketPairTest, SetTCPKeepintvlAboveMax) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - constexpr int kAboveMax = MAX_TCP_KEEPINTVL + 1; - EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_KEEPINTVL, - &kAboveMax, sizeof(kAboveMax)), - SyscallFailsWithErrno(EINVAL)); -} - -TEST_P(TCPSocketPairTest, SetTCPKeepidleToMax) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_KEEPIDLE, - &MAX_TCP_KEEPIDLE, sizeof(MAX_TCP_KEEPIDLE)), - SyscallSucceedsWithValue(0)); - - int get = -1; - socklen_t get_len = sizeof(get); - EXPECT_THAT(getsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_KEEPIDLE, &get, - &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, MAX_TCP_KEEPIDLE); -} - -TEST_P(TCPSocketPairTest, SetTCPKeepintvlToMax) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_KEEPINTVL, - &MAX_TCP_KEEPINTVL, sizeof(MAX_TCP_KEEPINTVL)), - SyscallSucceedsWithValue(0)); - - int get = -1; - socklen_t get_len = sizeof(get); - EXPECT_THAT(getsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_KEEPINTVL, &get, - &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, MAX_TCP_KEEPINTVL); -} - -TEST_P(TCPSocketPairTest, SetOOBInline) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - EXPECT_THAT(setsockopt(sockets->first_fd(), SOL_SOCKET, SO_OOBINLINE, - &kSockOptOn, sizeof(kSockOptOn)), - SyscallSucceeds()); - - int get = -1; - socklen_t get_len = sizeof(get); - EXPECT_THAT( - getsockopt(sockets->first_fd(), SOL_SOCKET, SO_OOBINLINE, &get, &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kSockOptOn); -} - -TEST_P(TCPSocketPairTest, MsgTruncMsgPeek) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[512]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - ASSERT_THAT( - RetryEINTR(send)(sockets->first_fd(), sent_data, sizeof(sent_data), 0), - SyscallSucceedsWithValue(sizeof(sent_data))); - - // Read half of the data with MSG_TRUNC | MSG_PEEK. This way there will still - // be some data left to read in the next step even if the data gets consumed. - char received_data1[sizeof(sent_data) / 2] = {}; - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), received_data1, - sizeof(received_data1), MSG_TRUNC | MSG_PEEK), - SyscallSucceedsWithValue(sizeof(received_data1))); - - // Check that we didn't get anything. - char zeros[sizeof(received_data1)] = {}; - EXPECT_EQ(0, memcmp(zeros, received_data1, sizeof(received_data1))); - - // Check that all of the data is still there. - char received_data2[sizeof(sent_data)] = {}; - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), received_data2, - sizeof(received_data2), 0), - SyscallSucceedsWithValue(sizeof(sent_data))); - - EXPECT_EQ(0, memcmp(received_data2, sent_data, sizeof(sent_data))); -} - -TEST_P(TCPSocketPairTest, SetCongestionControlSucceedsForSupported) { - // This is Linux's net/tcp.h TCP_CA_NAME_MAX. - const int kTcpCaNameMax = 16; - - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - // Netstack only supports reno & cubic so we only test these two values here. - { - const char kSetCC[kTcpCaNameMax] = "reno"; - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_CONGESTION, - &kSetCC, strlen(kSetCC)), - SyscallSucceedsWithValue(0)); - - char got_cc[kTcpCaNameMax]; - memset(got_cc, '1', sizeof(got_cc)); - socklen_t optlen = sizeof(got_cc); - ASSERT_THAT(getsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_CONGESTION, - &got_cc, &optlen), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(0, memcmp(got_cc, kSetCC, sizeof(kSetCC))); - } - { - const char kSetCC[kTcpCaNameMax] = "cubic"; - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_CONGESTION, - &kSetCC, strlen(kSetCC)), - SyscallSucceedsWithValue(0)); - - char got_cc[kTcpCaNameMax]; - memset(got_cc, '1', sizeof(got_cc)); - socklen_t optlen = sizeof(got_cc); - ASSERT_THAT(getsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_CONGESTION, - &got_cc, &optlen), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(0, memcmp(got_cc, kSetCC, sizeof(kSetCC))); - } -} - -TEST_P(TCPSocketPairTest, SetGetTCPCongestionShortReadBuffer) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - { - // Verify that getsockopt/setsockopt work with buffers smaller than - // kTcpCaNameMax. - const char kSetCC[] = "cubic"; - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_CONGESTION, - &kSetCC, strlen(kSetCC)), - SyscallSucceedsWithValue(0)); - - char got_cc[sizeof(kSetCC)]; - socklen_t optlen = sizeof(got_cc); - ASSERT_THAT(getsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_CONGESTION, - &got_cc, &optlen), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(0, memcmp(got_cc, kSetCC, sizeof(got_cc))); - } -} - -TEST_P(TCPSocketPairTest, SetGetTCPCongestionLargeReadBuffer) { - // This is Linux's net/tcp.h TCP_CA_NAME_MAX. - const int kTcpCaNameMax = 16; - - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - { - // Verify that getsockopt works with buffers larger than - // kTcpCaNameMax. - const char kSetCC[] = "cubic"; - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_CONGESTION, - &kSetCC, strlen(kSetCC)), - SyscallSucceedsWithValue(0)); - - char got_cc[kTcpCaNameMax + 5]; - socklen_t optlen = sizeof(got_cc); - ASSERT_THAT(getsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_CONGESTION, - &got_cc, &optlen), - SyscallSucceedsWithValue(0)); - // Linux copies the minimum of kTcpCaNameMax or the length of the passed in - // buffer and sets optlen to the number of bytes actually copied - // irrespective of the actual length of the congestion control name. - EXPECT_EQ(kTcpCaNameMax, optlen); - EXPECT_EQ(0, memcmp(got_cc, kSetCC, sizeof(kSetCC))); - } -} - -TEST_P(TCPSocketPairTest, SetCongestionControlFailsForUnsupported) { - // This is Linux's net/tcp.h TCP_CA_NAME_MAX. - const int kTcpCaNameMax = 16; - - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - char old_cc[kTcpCaNameMax]; - socklen_t optlen = sizeof(old_cc); - ASSERT_THAT(getsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_CONGESTION, - &old_cc, &optlen), - SyscallSucceedsWithValue(0)); - - const char kSetCC[] = "invalid_ca_cc"; - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_CONGESTION, - &kSetCC, strlen(kSetCC)), - SyscallFailsWithErrno(ENOENT)); - - char got_cc[kTcpCaNameMax]; - optlen = sizeof(got_cc); - ASSERT_THAT(getsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_CONGESTION, - &got_cc, &optlen), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(0, memcmp(got_cc, old_cc, sizeof(old_cc))); -} - -// Linux and Netstack both default to a 60s TCP_LINGER2 timeout. -constexpr int kDefaultTCPLingerTimeout = 60; - -TEST_P(TCPSocketPairTest, TCPLingerTimeoutDefault) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - int get = -1; - socklen_t get_len = sizeof(get); - EXPECT_THAT( - getsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_LINGER2, &get, &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kDefaultTCPLingerTimeout); -} - -TEST_P(TCPSocketPairTest, SetTCPLingerTimeoutZeroOrLess) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - constexpr int kZero = 0; - EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_LINGER2, &kZero, - sizeof(kZero)), - SyscallSucceedsWithValue(0)); - - constexpr int kNegative = -1234; - EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_LINGER2, - &kNegative, sizeof(kNegative)), - SyscallSucceedsWithValue(0)); -} - -TEST_P(TCPSocketPairTest, SetTCPLingerTimeoutAboveDefault) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - // Values above the net.ipv4.tcp_fin_timeout are capped to tcp_fin_timeout - // on linux (defaults to 60 seconds on linux). - constexpr int kAboveDefault = kDefaultTCPLingerTimeout + 1; - EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_LINGER2, - &kAboveDefault, sizeof(kAboveDefault)), - SyscallSucceedsWithValue(0)); - - int get = -1; - socklen_t get_len = sizeof(get); - EXPECT_THAT( - getsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_LINGER2, &get, &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kDefaultTCPLingerTimeout); -} - -TEST_P(TCPSocketPairTest, SetTCPLingerTimeout) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - // Values above the net.ipv4.tcp_fin_timeout are capped to tcp_fin_timeout - // on linux (defaults to 60 seconds on linux). - constexpr int kTCPLingerTimeout = kDefaultTCPLingerTimeout - 1; - EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_LINGER2, - &kTCPLingerTimeout, sizeof(kTCPLingerTimeout)), - SyscallSucceedsWithValue(0)); - - int get = -1; - socklen_t get_len = sizeof(get); - EXPECT_THAT( - getsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_LINGER2, &get, &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kTCPLingerTimeout); -} - -TEST_P(TCPSocketPairTest, TestTCPCloseWithData) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ScopedThread t([&]() { - // Close one end to trigger sending of a FIN. - ASSERT_THAT(shutdown(sockets->second_fd(), SHUT_WR), SyscallSucceeds()); - char buf[3]; - ASSERT_THAT(read(sockets->second_fd(), buf, 3), - SyscallSucceedsWithValue(3)); - absl::SleepFor(absl::Milliseconds(50)); - ASSERT_THAT(close(sockets->release_second_fd()), SyscallSucceeds()); - }); - - absl::SleepFor(absl::Milliseconds(50)); - // Send some data then close. - constexpr char kStr[] = "abc"; - ASSERT_THAT(write(sockets->first_fd(), kStr, 3), SyscallSucceedsWithValue(3)); - t.Join(); - ASSERT_THAT(close(sockets->release_first_fd()), SyscallSucceeds()); -} - -TEST_P(TCPSocketPairTest, TCPUserTimeoutDefault) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - int get = -1; - socklen_t get_len = sizeof(get); - ASSERT_THAT(getsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_USER_TIMEOUT, - &get, &get_len), - SyscallSucceeds()); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, 0); // 0 ms (disabled). -} - -TEST_P(TCPSocketPairTest, SetTCPUserTimeoutZero) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - constexpr int kZero = 0; - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_USER_TIMEOUT, - &kZero, sizeof(kZero)), - SyscallSucceeds()); - - int get = -1; - socklen_t get_len = sizeof(get); - ASSERT_THAT(getsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_USER_TIMEOUT, - &get, &get_len), - SyscallSucceeds()); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, 0); // 0 ms (disabled). -} - -TEST_P(TCPSocketPairTest, SetTCPUserTimeoutBelowZero) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - constexpr int kNeg = -10; - EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_USER_TIMEOUT, - &kNeg, sizeof(kNeg)), - SyscallFailsWithErrno(EINVAL)); - - int get = -1; - socklen_t get_len = sizeof(get); - ASSERT_THAT(getsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_USER_TIMEOUT, - &get, &get_len), - SyscallSucceeds()); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, 0); // 0 ms (disabled). -} - -TEST_P(TCPSocketPairTest, SetTCPUserTimeoutAboveZero) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - constexpr int kAbove = 10; - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_USER_TIMEOUT, - &kAbove, sizeof(kAbove)), - SyscallSucceeds()); - - int get = -1; - socklen_t get_len = sizeof(get); - ASSERT_THAT(getsockopt(sockets->first_fd(), IPPROTO_TCP, TCP_USER_TIMEOUT, - &get, &get_len), - SyscallSucceeds()); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kAbove); -} - -TEST_P(TCPSocketPairTest, TCPResetDuringClose_NoRandomSave) { - DisableSave ds; // Too many syscalls. - constexpr int kThreadCount = 1000; - std::unique_ptr<ScopedThread> instances[kThreadCount]; - for (int i = 0; i < kThreadCount; i++) { - instances[i] = absl::make_unique<ScopedThread>([&]() { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ScopedThread t([&]() { - // Close one end to trigger sending of a FIN. - struct pollfd poll_fd = {sockets->second_fd(), POLLIN | POLLHUP, 0}; - // Wait up to 20 seconds for the data. - constexpr int kPollTimeoutMs = 20000; - ASSERT_THAT(RetryEINTR(poll)(&poll_fd, 1, kPollTimeoutMs), - SyscallSucceedsWithValue(1)); - ASSERT_THAT(close(sockets->release_second_fd()), SyscallSucceeds()); - }); - - // Send some data then close. - constexpr char kStr[] = "abc"; - ASSERT_THAT(write(sockets->first_fd(), kStr, 3), - SyscallSucceedsWithValue(3)); - absl::SleepFor(absl::Milliseconds(10)); - ASSERT_THAT(close(sockets->release_first_fd()), SyscallSucceeds()); - t.Join(); - }); - } - for (int i = 0; i < kThreadCount; i++) { - instances[i]->Join(); - } -} - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_ip_tcp_generic.h b/test/syscalls/linux/socket_ip_tcp_generic.h deleted file mode 100644 index a3eff3c73..000000000 --- a/test/syscalls/linux/socket_ip_tcp_generic.h +++ /dev/null @@ -1,29 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_SYSCALLS_LINUX_SOCKET_IP_TCP_GENERIC_H_ -#define GVISOR_TEST_SYSCALLS_LINUX_SOCKET_IP_TCP_GENERIC_H_ - -#include "test/syscalls/linux/socket_test_util.h" - -namespace gvisor { -namespace testing { - -// Test fixture for tests that apply to pairs of connected TCP sockets. -using TCPSocketPairTest = SocketPairTest; - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_SYSCALLS_LINUX_SOCKET_IP_TCP_GENERIC_H_ diff --git a/test/syscalls/linux/socket_ip_tcp_generic_loopback.cc b/test/syscalls/linux/socket_ip_tcp_generic_loopback.cc deleted file mode 100644 index 4e79d21f4..000000000 --- a/test/syscalls/linux/socket_ip_tcp_generic_loopback.cc +++ /dev/null @@ -1,45 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <netinet/tcp.h> - -#include <vector> - -#include "test/syscalls/linux/ip_socket_test_util.h" -#include "test/syscalls/linux/socket_ip_tcp_generic.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -std::vector<SocketPairKind> GetSocketPairs() { - return ApplyVecToVec<SocketPairKind>( - std::vector<Middleware>{ - NoOp, SetSockOpt(IPPROTO_TCP, TCP_NODELAY, &kSockOptOn)}, - std::vector<SocketPairKind>{ - IPv6TCPAcceptBindSocketPair(0), - IPv4TCPAcceptBindSocketPair(0), - DualStackTCPAcceptBindSocketPair(0), - }); -} - -INSTANTIATE_TEST_SUITE_P( - AllTCPSockets, TCPSocketPairTest, - ::testing::ValuesIn(IncludeReversals(GetSocketPairs()))); - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_ip_tcp_loopback.cc b/test/syscalls/linux/socket_ip_tcp_loopback.cc deleted file mode 100644 index 9db3037bc..000000000 --- a/test/syscalls/linux/socket_ip_tcp_loopback.cc +++ /dev/null @@ -1,40 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <vector> - -#include "test/syscalls/linux/ip_socket_test_util.h" -#include "test/syscalls/linux/socket_generic.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -std::vector<SocketPairKind> GetSocketPairs() { - return { - IPv6TCPAcceptBindSocketPair(0), - IPv4TCPAcceptBindSocketPair(0), - DualStackTCPAcceptBindSocketPair(0), - }; -} - -INSTANTIATE_TEST_SUITE_P( - AllUnixDomainSockets, AllSocketPairTest, - ::testing::ValuesIn(IncludeReversals(GetSocketPairs()))); - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_ip_tcp_loopback_blocking.cc b/test/syscalls/linux/socket_ip_tcp_loopback_blocking.cc deleted file mode 100644 index f996b93d2..000000000 --- a/test/syscalls/linux/socket_ip_tcp_loopback_blocking.cc +++ /dev/null @@ -1,45 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <netinet/tcp.h> - -#include <vector> - -#include "test/syscalls/linux/ip_socket_test_util.h" -#include "test/syscalls/linux/socket_stream_blocking.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -std::vector<SocketPairKind> GetSocketPairs() { - return ApplyVecToVec<SocketPairKind>( - std::vector<Middleware>{ - NoOp, SetSockOpt(IPPROTO_TCP, TCP_NODELAY, &kSockOptOn)}, - std::vector<SocketPairKind>{ - IPv6TCPAcceptBindSocketPair(0), - IPv4TCPAcceptBindSocketPair(0), - DualStackTCPAcceptBindSocketPair(0), - }); -} - -INSTANTIATE_TEST_SUITE_P( - BlockingTCPSockets, BlockingStreamSocketPairTest, - ::testing::ValuesIn(IncludeReversals(GetSocketPairs()))); - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_ip_tcp_loopback_nonblock.cc b/test/syscalls/linux/socket_ip_tcp_loopback_nonblock.cc deleted file mode 100644 index ffa377210..000000000 --- a/test/syscalls/linux/socket_ip_tcp_loopback_nonblock.cc +++ /dev/null @@ -1,44 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <netinet/tcp.h> - -#include <vector> - -#include "test/syscalls/linux/ip_socket_test_util.h" -#include "test/syscalls/linux/socket_non_blocking.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -std::vector<SocketPairKind> GetSocketPairs() { - return ApplyVecToVec<SocketPairKind>( - std::vector<Middleware>{ - NoOp, SetSockOpt(IPPROTO_TCP, TCP_NODELAY, &kSockOptOn)}, - std::vector<SocketPairKind>{ - IPv6TCPAcceptBindSocketPair(SOCK_NONBLOCK), - IPv4TCPAcceptBindSocketPair(SOCK_NONBLOCK), - }); -} - -INSTANTIATE_TEST_SUITE_P( - NonBlockingTCPSockets, NonBlockingSocketPairTest, - ::testing::ValuesIn(IncludeReversals(GetSocketPairs()))); - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_ip_tcp_udp_generic.cc b/test/syscalls/linux/socket_ip_tcp_udp_generic.cc deleted file mode 100644 index f178f1af9..000000000 --- a/test/syscalls/linux/socket_ip_tcp_udp_generic.cc +++ /dev/null @@ -1,77 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <netinet/in.h> -#include <netinet/tcp.h> -#include <poll.h> -#include <stdio.h> -#include <sys/ioctl.h> -#include <sys/socket.h> -#include <sys/types.h> -#include <sys/un.h> - -#include "gtest/gtest.h" -#include "test/syscalls/linux/ip_socket_test_util.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -// Test fixture for tests that apply to pairs of TCP and UDP sockets. -using TcpUdpSocketPairTest = SocketPairTest; - -TEST_P(TcpUdpSocketPairTest, ShutdownWrFollowedBySendIsError) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - // Now shutdown the write end of the first. - ASSERT_THAT(shutdown(sockets->first_fd(), SHUT_WR), SyscallSucceeds()); - - char buf[10] = {}; - ASSERT_THAT(RetryEINTR(send)(sockets->first_fd(), buf, sizeof(buf), 0), - SyscallFailsWithErrno(EPIPE)); -} - -std::vector<SocketPairKind> GetSocketPairs() { - return VecCat<SocketPairKind>( - ApplyVec<SocketPairKind>( - IPv6UDPBidirectionalBindSocketPair, - AllBitwiseCombinations(List<int>{0, SOCK_NONBLOCK})), - ApplyVec<SocketPairKind>( - IPv4UDPBidirectionalBindSocketPair, - AllBitwiseCombinations(List<int>{0, SOCK_NONBLOCK})), - ApplyVec<SocketPairKind>( - DualStackUDPBidirectionalBindSocketPair, - AllBitwiseCombinations(List<int>{0, SOCK_NONBLOCK})), - ApplyVec<SocketPairKind>( - IPv6TCPAcceptBindSocketPair, - AllBitwiseCombinations(List<int>{0, SOCK_NONBLOCK})), - ApplyVec<SocketPairKind>( - IPv4TCPAcceptBindSocketPair, - AllBitwiseCombinations(List<int>{0, SOCK_NONBLOCK})), - ApplyVec<SocketPairKind>( - DualStackTCPAcceptBindSocketPair, - AllBitwiseCombinations(List<int>{0, SOCK_NONBLOCK}))); -} - -INSTANTIATE_TEST_SUITE_P( - AllIPSockets, TcpUdpSocketPairTest, - ::testing::ValuesIn(IncludeReversals(GetSocketPairs()))); - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_ip_udp_generic.cc b/test/syscalls/linux/socket_ip_udp_generic.cc deleted file mode 100644 index 53290bed7..000000000 --- a/test/syscalls/linux/socket_ip_udp_generic.cc +++ /dev/null @@ -1,361 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/syscalls/linux/socket_ip_udp_generic.h" - -#include <netinet/in.h> -#include <netinet/tcp.h> -#include <poll.h> -#include <stdio.h> -#include <sys/ioctl.h> -#include <sys/socket.h> -#include <sys/types.h> -#include <sys/un.h> - -#include "gtest/gtest.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -TEST_P(UDPSocketPairTest, MulticastTTLDefault) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - int get = -1; - socklen_t get_len = sizeof(get); - ASSERT_THAT(getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_TTL, - &get, &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, 1); -} - -TEST_P(UDPSocketPairTest, SetUDPMulticastTTLMin) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - constexpr int kMin = 0; - EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_TTL, - &kMin, sizeof(kMin)), - SyscallSucceeds()); - - int get = -1; - socklen_t get_len = sizeof(get); - ASSERT_THAT(getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_TTL, - &get, &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kMin); -} - -TEST_P(UDPSocketPairTest, SetUDPMulticastTTLMax) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - constexpr int kMax = 255; - EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_TTL, - &kMax, sizeof(kMax)), - SyscallSucceeds()); - - int get = -1; - socklen_t get_len = sizeof(get); - ASSERT_THAT(getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_TTL, - &get, &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kMax); -} - -TEST_P(UDPSocketPairTest, SetUDPMulticastTTLNegativeOne) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - constexpr int kArbitrary = 6; - EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_TTL, - &kArbitrary, sizeof(kArbitrary)), - SyscallSucceeds()); - - constexpr int kNegOne = -1; - EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_TTL, - &kNegOne, sizeof(kNegOne)), - SyscallSucceeds()); - - int get = -1; - socklen_t get_len = sizeof(get); - ASSERT_THAT(getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_TTL, - &get, &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, 1); -} - -TEST_P(UDPSocketPairTest, SetUDPMulticastTTLBelowMin) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - constexpr int kBelowMin = -2; - EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_TTL, - &kBelowMin, sizeof(kBelowMin)), - SyscallFailsWithErrno(EINVAL)); -} - -TEST_P(UDPSocketPairTest, SetUDPMulticastTTLAboveMax) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - constexpr int kAboveMax = 256; - EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_TTL, - &kAboveMax, sizeof(kAboveMax)), - SyscallFailsWithErrno(EINVAL)); -} - -TEST_P(UDPSocketPairTest, SetUDPMulticastTTLChar) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - constexpr char kArbitrary = 6; - EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_TTL, - &kArbitrary, sizeof(kArbitrary)), - SyscallSucceeds()); - - int get = -1; - socklen_t get_len = sizeof(get); - ASSERT_THAT(getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_TTL, - &get, &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kArbitrary); -} - -TEST_P(UDPSocketPairTest, SetEmptyIPAddMembership) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - struct ip_mreqn req = {}; - EXPECT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_ADD_MEMBERSHIP, - &req, sizeof(req)), - SyscallFailsWithErrno(EINVAL)); -} - -TEST_P(UDPSocketPairTest, MulticastLoopDefault) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - int get = -1; - socklen_t get_len = sizeof(get); - ASSERT_THAT(getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_LOOP, - &get, &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kSockOptOn); -} - -TEST_P(UDPSocketPairTest, SetMulticastLoop) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_LOOP, - &kSockOptOff, sizeof(kSockOptOff)), - SyscallSucceeds()); - - int get = -1; - socklen_t get_len = sizeof(get); - ASSERT_THAT(getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_LOOP, - &get, &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kSockOptOff); - - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_LOOP, - &kSockOptOn, sizeof(kSockOptOn)), - SyscallSucceeds()); - - ASSERT_THAT(getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_LOOP, - &get, &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kSockOptOn); -} - -TEST_P(UDPSocketPairTest, SetMulticastLoopChar) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - constexpr char kSockOptOnChar = kSockOptOn; - constexpr char kSockOptOffChar = kSockOptOff; - - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_LOOP, - &kSockOptOffChar, sizeof(kSockOptOffChar)), - SyscallSucceeds()); - - int get = -1; - socklen_t get_len = sizeof(get); - ASSERT_THAT(getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_LOOP, - &get, &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kSockOptOff); - - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_LOOP, - &kSockOptOnChar, sizeof(kSockOptOnChar)), - SyscallSucceeds()); - - ASSERT_THAT(getsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_LOOP, - &get, &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kSockOptOn); -} - -// Ensure that Receiving TOS is off by default. -TEST_P(UDPSocketPairTest, RecvTosDefault) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - int get = -1; - socklen_t get_len = sizeof(get); - ASSERT_THAT( - getsockopt(sockets->first_fd(), IPPROTO_IP, IP_RECVTOS, &get, &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kSockOptOff); -} - -// Test that setting and getting IP_RECVTOS works as expected. -TEST_P(UDPSocketPairTest, SetRecvTos) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_RECVTOS, - &kSockOptOff, sizeof(kSockOptOff)), - SyscallSucceeds()); - - int get = -1; - socklen_t get_len = sizeof(get); - ASSERT_THAT( - getsockopt(sockets->first_fd(), IPPROTO_IP, IP_RECVTOS, &get, &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kSockOptOff); - - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_RECVTOS, - &kSockOptOn, sizeof(kSockOptOn)), - SyscallSucceeds()); - - ASSERT_THAT( - getsockopt(sockets->first_fd(), IPPROTO_IP, IP_RECVTOS, &get, &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kSockOptOn); -} - -TEST_P(UDPSocketPairTest, ReuseAddrDefault) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - int get = -1; - socklen_t get_len = sizeof(get); - ASSERT_THAT( - getsockopt(sockets->first_fd(), SOL_SOCKET, SO_REUSEADDR, &get, &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kSockOptOff); -} - -TEST_P(UDPSocketPairTest, SetReuseAddr) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - // FIXME(b/129164367): Support SO_REUSEADDR on UDP sockets. - SKIP_IF(IsRunningOnGvisor()); - - ASSERT_THAT(setsockopt(sockets->first_fd(), SOL_SOCKET, SO_REUSEADDR, - &kSockOptOn, sizeof(kSockOptOn)), - SyscallSucceeds()); - - int get = -1; - socklen_t get_len = sizeof(get); - ASSERT_THAT( - getsockopt(sockets->first_fd(), SOL_SOCKET, SO_REUSEADDR, &get, &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kSockOptOn); - - ASSERT_THAT(setsockopt(sockets->first_fd(), SOL_SOCKET, SO_REUSEADDR, - &kSockOptOff, sizeof(kSockOptOff)), - SyscallSucceeds()); - - ASSERT_THAT( - getsockopt(sockets->first_fd(), SOL_SOCKET, SO_REUSEADDR, &get, &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kSockOptOff); -} - -TEST_P(UDPSocketPairTest, ReusePortDefault) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - int get = -1; - socklen_t get_len = sizeof(get); - ASSERT_THAT( - getsockopt(sockets->first_fd(), SOL_SOCKET, SO_REUSEPORT, &get, &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kSockOptOff); -} - -TEST_P(UDPSocketPairTest, SetReusePort) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(setsockopt(sockets->first_fd(), SOL_SOCKET, SO_REUSEPORT, - &kSockOptOn, sizeof(kSockOptOn)), - SyscallSucceeds()); - - int get = -1; - socklen_t get_len = sizeof(get); - ASSERT_THAT( - getsockopt(sockets->first_fd(), SOL_SOCKET, SO_REUSEPORT, &get, &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kSockOptOn); - - ASSERT_THAT(setsockopt(sockets->first_fd(), SOL_SOCKET, SO_REUSEPORT, - &kSockOptOff, sizeof(kSockOptOff)), - SyscallSucceeds()); - - ASSERT_THAT( - getsockopt(sockets->first_fd(), SOL_SOCKET, SO_REUSEPORT, &get, &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kSockOptOff); -} - -TEST_P(UDPSocketPairTest, SetReuseAddrReusePort) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - // FIXME(b/129164367): Support SO_REUSEADDR on UDP sockets. - SKIP_IF(IsRunningOnGvisor()); - - ASSERT_THAT(setsockopt(sockets->first_fd(), SOL_SOCKET, SO_REUSEADDR, - &kSockOptOn, sizeof(kSockOptOn)), - SyscallSucceeds()); - - ASSERT_THAT(setsockopt(sockets->first_fd(), SOL_SOCKET, SO_REUSEPORT, - &kSockOptOn, sizeof(kSockOptOn)), - SyscallSucceeds()); - - int get = -1; - socklen_t get_len = sizeof(get); - ASSERT_THAT( - getsockopt(sockets->first_fd(), SOL_SOCKET, SO_REUSEADDR, &get, &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kSockOptOn); - - ASSERT_THAT( - getsockopt(sockets->first_fd(), SOL_SOCKET, SO_REUSEPORT, &get, &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kSockOptOn); -} - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_ip_udp_generic.h b/test/syscalls/linux/socket_ip_udp_generic.h deleted file mode 100644 index 106c54e9f..000000000 --- a/test/syscalls/linux/socket_ip_udp_generic.h +++ /dev/null @@ -1,29 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_SYSCALLS_LINUX_SOCKET_IP_UDP_GENERIC_H_ -#define GVISOR_TEST_SYSCALLS_LINUX_SOCKET_IP_UDP_GENERIC_H_ - -#include "test/syscalls/linux/socket_test_util.h" - -namespace gvisor { -namespace testing { - -// Test fixture for tests that apply to pairs of connected UDP sockets. -using UDPSocketPairTest = SocketPairTest; - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_SYSCALLS_LINUX_SOCKET_IP_UDP_GENERIC_H_ diff --git a/test/syscalls/linux/socket_ip_udp_loopback.cc b/test/syscalls/linux/socket_ip_udp_loopback.cc deleted file mode 100644 index c7fa44884..000000000 --- a/test/syscalls/linux/socket_ip_udp_loopback.cc +++ /dev/null @@ -1,50 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <vector> - -#include "test/syscalls/linux/ip_socket_test_util.h" -#include "test/syscalls/linux/socket_generic.h" -#include "test/syscalls/linux/socket_ip_udp_generic.h" -#include "test/syscalls/linux/socket_non_stream.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -std::vector<SocketPairKind> GetSocketPairs() { - return { - IPv6UDPBidirectionalBindSocketPair(0), - IPv4UDPBidirectionalBindSocketPair(0), - DualStackUDPBidirectionalBindSocketPair(0), - }; -} - -INSTANTIATE_TEST_SUITE_P( - AllUDPSockets, AllSocketPairTest, - ::testing::ValuesIn(IncludeReversals(GetSocketPairs()))); - -INSTANTIATE_TEST_SUITE_P( - AllUDPSockets, NonStreamSocketPairTest, - ::testing::ValuesIn(IncludeReversals(GetSocketPairs()))); - -INSTANTIATE_TEST_SUITE_P( - AllUDPSockets, UDPSocketPairTest, - ::testing::ValuesIn(IncludeReversals(GetSocketPairs()))); - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_ip_udp_loopback_blocking.cc b/test/syscalls/linux/socket_ip_udp_loopback_blocking.cc deleted file mode 100644 index d6925a8df..000000000 --- a/test/syscalls/linux/socket_ip_udp_loopback_blocking.cc +++ /dev/null @@ -1,39 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <vector> - -#include "test/syscalls/linux/ip_socket_test_util.h" -#include "test/syscalls/linux/socket_non_stream_blocking.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -std::vector<SocketPairKind> GetSocketPairs() { - return { - IPv6UDPBidirectionalBindSocketPair(0), - IPv4UDPBidirectionalBindSocketPair(0), - }; -} - -INSTANTIATE_TEST_SUITE_P( - BlockingUDPSockets, BlockingNonStreamSocketPairTest, - ::testing::ValuesIn(IncludeReversals(GetSocketPairs()))); - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_ip_udp_loopback_nonblock.cc b/test/syscalls/linux/socket_ip_udp_loopback_nonblock.cc deleted file mode 100644 index d675eddc6..000000000 --- a/test/syscalls/linux/socket_ip_udp_loopback_nonblock.cc +++ /dev/null @@ -1,39 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <vector> - -#include "test/syscalls/linux/ip_socket_test_util.h" -#include "test/syscalls/linux/socket_non_blocking.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -std::vector<SocketPairKind> GetSocketPairs() { - return { - IPv6UDPBidirectionalBindSocketPair(SOCK_NONBLOCK), - IPv4UDPBidirectionalBindSocketPair(SOCK_NONBLOCK), - }; -} - -INSTANTIATE_TEST_SUITE_P( - NonBlockingUDPSockets, NonBlockingSocketPairTest, - ::testing::ValuesIn(IncludeReversals(GetSocketPairs()))); - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_ip_unbound.cc b/test/syscalls/linux/socket_ip_unbound.cc deleted file mode 100644 index ca597e267..000000000 --- a/test/syscalls/linux/socket_ip_unbound.cc +++ /dev/null @@ -1,443 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <arpa/inet.h> -#include <netinet/in.h> -#include <sys/socket.h> -#include <sys/types.h> -#include <sys/un.h> - -#include <cstdio> -#include <cstring> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "test/syscalls/linux/ip_socket_test_util.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -// Test fixture for tests that apply to pairs of IP sockets. -using IPUnboundSocketTest = SimpleSocketTest; - -TEST_P(IPUnboundSocketTest, TtlDefault) { - auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - int get = -1; - socklen_t get_sz = sizeof(get); - EXPECT_THAT(getsockopt(socket->get(), IPPROTO_IP, IP_TTL, &get, &get_sz), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get, 64); - EXPECT_EQ(get_sz, sizeof(get)); -} - -TEST_P(IPUnboundSocketTest, SetTtl) { - auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - int get1 = -1; - socklen_t get1_sz = sizeof(get1); - EXPECT_THAT(getsockopt(socket->get(), IPPROTO_IP, IP_TTL, &get1, &get1_sz), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get1_sz, sizeof(get1)); - - int set = 100; - if (set == get1) { - set += 1; - } - socklen_t set_sz = sizeof(set); - EXPECT_THAT(setsockopt(socket->get(), IPPROTO_IP, IP_TTL, &set, set_sz), - SyscallSucceedsWithValue(0)); - - int get2 = -1; - socklen_t get2_sz = sizeof(get2); - EXPECT_THAT(getsockopt(socket->get(), IPPROTO_IP, IP_TTL, &get2, &get2_sz), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get2_sz, sizeof(get2)); - EXPECT_EQ(get2, set); -} - -TEST_P(IPUnboundSocketTest, ResetTtlToDefault) { - auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - int get1 = -1; - socklen_t get1_sz = sizeof(get1); - EXPECT_THAT(getsockopt(socket->get(), IPPROTO_IP, IP_TTL, &get1, &get1_sz), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get1_sz, sizeof(get1)); - - int set1 = 100; - if (set1 == get1) { - set1 += 1; - } - socklen_t set1_sz = sizeof(set1); - EXPECT_THAT(setsockopt(socket->get(), IPPROTO_IP, IP_TTL, &set1, set1_sz), - SyscallSucceedsWithValue(0)); - - int set2 = -1; - socklen_t set2_sz = sizeof(set2); - EXPECT_THAT(setsockopt(socket->get(), IPPROTO_IP, IP_TTL, &set2, set2_sz), - SyscallSucceedsWithValue(0)); - - int get2 = -1; - socklen_t get2_sz = sizeof(get2); - EXPECT_THAT(getsockopt(socket->get(), IPPROTO_IP, IP_TTL, &get2, &get2_sz), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get2_sz, sizeof(get2)); - EXPECT_EQ(get2, get1); -} - -TEST_P(IPUnboundSocketTest, ZeroTtl) { - auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - int set = 0; - socklen_t set_sz = sizeof(set); - EXPECT_THAT(setsockopt(socket->get(), IPPROTO_IP, IP_TTL, &set, set_sz), - SyscallFailsWithErrno(EINVAL)); -} - -TEST_P(IPUnboundSocketTest, InvalidLargeTtl) { - auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - int set = 256; - socklen_t set_sz = sizeof(set); - EXPECT_THAT(setsockopt(socket->get(), IPPROTO_IP, IP_TTL, &set, set_sz), - SyscallFailsWithErrno(EINVAL)); -} - -TEST_P(IPUnboundSocketTest, InvalidNegativeTtl) { - auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - int set = -2; - socklen_t set_sz = sizeof(set); - EXPECT_THAT(setsockopt(socket->get(), IPPROTO_IP, IP_TTL, &set, set_sz), - SyscallFailsWithErrno(EINVAL)); -} - -struct TOSOption { - int level; - int option; - int cmsg_level; -}; - -constexpr int INET_ECN_MASK = 3; - -static TOSOption GetTOSOption(int domain) { - TOSOption opt; - switch (domain) { - case AF_INET: - opt.level = IPPROTO_IP; - opt.option = IP_TOS; - opt.cmsg_level = SOL_IP; - break; - case AF_INET6: - opt.level = IPPROTO_IPV6; - opt.option = IPV6_TCLASS; - opt.cmsg_level = SOL_IPV6; - break; - } - return opt; -} - -TEST_P(IPUnboundSocketTest, TOSDefault) { - auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - TOSOption t = GetTOSOption(GetParam().domain); - int get = -1; - socklen_t get_sz = sizeof(get); - constexpr int kDefaultTOS = 0; - EXPECT_THAT(getsockopt(socket->get(), t.level, t.option, &get, &get_sz), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_sz, sizeof(get)); - EXPECT_EQ(get, kDefaultTOS); -} - -TEST_P(IPUnboundSocketTest, SetTOS) { - auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - int set = 0xC0; - socklen_t set_sz = sizeof(set); - TOSOption t = GetTOSOption(GetParam().domain); - EXPECT_THAT(setsockopt(socket->get(), t.level, t.option, &set, set_sz), - SyscallSucceedsWithValue(0)); - - int get = -1; - socklen_t get_sz = sizeof(get); - EXPECT_THAT(getsockopt(socket->get(), t.level, t.option, &get, &get_sz), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_sz, sizeof(get)); - EXPECT_EQ(get, set); -} - -TEST_P(IPUnboundSocketTest, ZeroTOS) { - auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - int set = 0; - socklen_t set_sz = sizeof(set); - TOSOption t = GetTOSOption(GetParam().domain); - EXPECT_THAT(setsockopt(socket->get(), t.level, t.option, &set, set_sz), - SyscallSucceedsWithValue(0)); - int get = -1; - socklen_t get_sz = sizeof(get); - EXPECT_THAT(getsockopt(socket->get(), t.level, t.option, &get, &get_sz), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_sz, sizeof(get)); - EXPECT_EQ(get, set); -} - -TEST_P(IPUnboundSocketTest, InvalidLargeTOS) { - auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - // Test with exceeding the byte space. - int set = 256; - constexpr int kDefaultTOS = 0; - socklen_t set_sz = sizeof(set); - TOSOption t = GetTOSOption(GetParam().domain); - if (GetParam().domain == AF_INET) { - EXPECT_THAT(setsockopt(socket->get(), t.level, t.option, &set, set_sz), - SyscallSucceedsWithValue(0)); - } else { - EXPECT_THAT(setsockopt(socket->get(), t.level, t.option, &set, set_sz), - SyscallFailsWithErrno(EINVAL)); - } - int get = -1; - socklen_t get_sz = sizeof(get); - EXPECT_THAT(getsockopt(socket->get(), t.level, t.option, &get, &get_sz), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_sz, sizeof(get)); - EXPECT_EQ(get, kDefaultTOS); -} - -TEST_P(IPUnboundSocketTest, CheckSkipECN) { - auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - int set = 0xFF; - socklen_t set_sz = sizeof(set); - TOSOption t = GetTOSOption(GetParam().domain); - EXPECT_THAT(setsockopt(socket->get(), t.level, t.option, &set, set_sz), - SyscallSucceedsWithValue(0)); - int expect = static_cast<uint8_t>(set); - if (GetParam().protocol == IPPROTO_TCP) { - expect &= ~INET_ECN_MASK; - } - int get = -1; - socklen_t get_sz = sizeof(get); - EXPECT_THAT(getsockopt(socket->get(), t.level, t.option, &get, &get_sz), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_sz, sizeof(get)); - EXPECT_EQ(get, expect); -} - -TEST_P(IPUnboundSocketTest, ZeroTOSOptionSize) { - auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - int set = 0xC0; - socklen_t set_sz = 0; - TOSOption t = GetTOSOption(GetParam().domain); - if (GetParam().domain == AF_INET) { - EXPECT_THAT(setsockopt(socket->get(), t.level, t.option, &set, set_sz), - SyscallSucceedsWithValue(0)); - } else { - EXPECT_THAT(setsockopt(socket->get(), t.level, t.option, &set, set_sz), - SyscallFailsWithErrno(EINVAL)); - } - int get = -1; - socklen_t get_sz = 0; - EXPECT_THAT(getsockopt(socket->get(), t.level, t.option, &get, &get_sz), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_sz, 0); - EXPECT_EQ(get, -1); -} - -TEST_P(IPUnboundSocketTest, SmallTOSOptionSize) { - auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - int set = 0xC0; - constexpr int kDefaultTOS = 0; - TOSOption t = GetTOSOption(GetParam().domain); - for (socklen_t i = 1; i < sizeof(int); i++) { - int expect_tos; - socklen_t expect_sz; - if (GetParam().domain == AF_INET) { - EXPECT_THAT(setsockopt(socket->get(), t.level, t.option, &set, i), - SyscallSucceedsWithValue(0)); - expect_tos = set; - expect_sz = sizeof(uint8_t); - } else { - EXPECT_THAT(setsockopt(socket->get(), t.level, t.option, &set, i), - SyscallFailsWithErrno(EINVAL)); - expect_tos = kDefaultTOS; - expect_sz = i; - } - uint get = -1; - socklen_t get_sz = i; - EXPECT_THAT(getsockopt(socket->get(), t.level, t.option, &get, &get_sz), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_sz, expect_sz); - // Account for partial copies by getsockopt, retrieve the lower - // bits specified by get_sz, while comparing against expect_tos. - EXPECT_EQ(get & ~(~0 << (get_sz * 8)), expect_tos); - } -} - -TEST_P(IPUnboundSocketTest, LargeTOSOptionSize) { - auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - int set = 0xC0; - TOSOption t = GetTOSOption(GetParam().domain); - for (socklen_t i = sizeof(int); i < 10; i++) { - EXPECT_THAT(setsockopt(socket->get(), t.level, t.option, &set, i), - SyscallSucceedsWithValue(0)); - int get = -1; - socklen_t get_sz = i; - // We expect the system call handler to only copy atmost sizeof(int) bytes - // as asserted by the check below. Hence, we do not expect the copy to - // overflow in getsockopt. - EXPECT_THAT(getsockopt(socket->get(), t.level, t.option, &get, &get_sz), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_sz, sizeof(int)); - EXPECT_EQ(get, set); - } -} - -TEST_P(IPUnboundSocketTest, NegativeTOS) { - auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - int set = -1; - socklen_t set_sz = sizeof(set); - TOSOption t = GetTOSOption(GetParam().domain); - EXPECT_THAT(setsockopt(socket->get(), t.level, t.option, &set, set_sz), - SyscallSucceedsWithValue(0)); - int expect; - if (GetParam().domain == AF_INET) { - expect = static_cast<uint8_t>(set); - if (GetParam().protocol == IPPROTO_TCP) { - expect &= ~INET_ECN_MASK; - } - } else { - // On IPv6 TCLASS, setting -1 has the effect of resetting the - // TrafficClass. - expect = 0; - } - int get = -1; - socklen_t get_sz = sizeof(get); - EXPECT_THAT(getsockopt(socket->get(), t.level, t.option, &get, &get_sz), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_sz, sizeof(get)); - EXPECT_EQ(get, expect); -} - -TEST_P(IPUnboundSocketTest, InvalidNegativeTOS) { - auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - int set = -2; - socklen_t set_sz = sizeof(set); - TOSOption t = GetTOSOption(GetParam().domain); - int expect; - if (GetParam().domain == AF_INET) { - EXPECT_THAT(setsockopt(socket->get(), t.level, t.option, &set, set_sz), - SyscallSucceedsWithValue(0)); - expect = static_cast<uint8_t>(set); - if (GetParam().protocol == IPPROTO_TCP) { - expect &= ~INET_ECN_MASK; - } - } else { - EXPECT_THAT(setsockopt(socket->get(), t.level, t.option, &set, set_sz), - SyscallFailsWithErrno(EINVAL)); - expect = 0; - } - int get = 0; - socklen_t get_sz = sizeof(get); - EXPECT_THAT(getsockopt(socket->get(), t.level, t.option, &get, &get_sz), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_sz, sizeof(get)); - EXPECT_EQ(get, expect); -} - -TEST_P(IPUnboundSocketTest, NullTOS) { - auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - TOSOption t = GetTOSOption(GetParam().domain); - int set_sz = sizeof(int); - if (GetParam().domain == AF_INET) { - EXPECT_THAT(setsockopt(socket->get(), t.level, t.option, nullptr, set_sz), - SyscallFailsWithErrno(EFAULT)); - } else { // AF_INET6 - // The AF_INET6 behavior is not yet compatible. gVisor will try to read - // optval from user memory at syscall handler, it needs substantial - // refactoring to implement this behavior just for IPv6. - if (IsRunningOnGvisor()) { - EXPECT_THAT(setsockopt(socket->get(), t.level, t.option, nullptr, set_sz), - SyscallFailsWithErrno(EFAULT)); - } else { - // Linux's IPv6 stack treats nullptr optval as input of 0, so the call - // succeeds. (net/ipv6/ipv6_sockglue.c, do_ipv6_setsockopt()) - // - // Linux's implementation would need fixing as passing a nullptr as optval - // and non-zero optlen may not be valid. - EXPECT_THAT(setsockopt(socket->get(), t.level, t.option, nullptr, set_sz), - SyscallSucceedsWithValue(0)); - } - } - socklen_t get_sz = sizeof(int); - EXPECT_THAT(getsockopt(socket->get(), t.level, t.option, nullptr, &get_sz), - SyscallFailsWithErrno(EFAULT)); - int get = -1; - EXPECT_THAT(getsockopt(socket->get(), t.level, t.option, &get, nullptr), - SyscallFailsWithErrno(EFAULT)); -} - -TEST_P(IPUnboundSocketTest, InsufficientBufferTOS) { - SKIP_IF(GetParam().protocol == IPPROTO_TCP); - - auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - TOSOption t = GetTOSOption(GetParam().domain); - - in_addr addr4; - in6_addr addr6; - ASSERT_THAT(inet_pton(AF_INET, "127.0.0.1", &addr4), ::testing::Eq(1)); - ASSERT_THAT(inet_pton(AF_INET6, "fe80::", &addr6), ::testing::Eq(1)); - - cmsghdr cmsg = {}; - cmsg.cmsg_len = sizeof(cmsg); - cmsg.cmsg_level = t.cmsg_level; - cmsg.cmsg_type = t.option; - - msghdr msg = {}; - msg.msg_control = &cmsg; - msg.msg_controllen = sizeof(cmsg); - if (GetParam().domain == AF_INET) { - msg.msg_name = &addr4; - msg.msg_namelen = sizeof(addr4); - } else { - msg.msg_name = &addr6; - msg.msg_namelen = sizeof(addr6); - } - - EXPECT_THAT(sendmsg(socket->get(), &msg, 0), SyscallFailsWithErrno(EINVAL)); -} - -INSTANTIATE_TEST_SUITE_P( - IPUnboundSockets, IPUnboundSocketTest, - ::testing::ValuesIn(VecCat<SocketKind>(VecCat<SocketKind>( - ApplyVec<SocketKind>(IPv4UDPUnboundSocket, - AllBitwiseCombinations(List<int>{SOCK_DGRAM}, - List<int>{0, - SOCK_NONBLOCK})), - ApplyVec<SocketKind>(IPv6UDPUnboundSocket, - AllBitwiseCombinations(List<int>{SOCK_DGRAM}, - List<int>{0, - SOCK_NONBLOCK})), - ApplyVec<SocketKind>(IPv4TCPUnboundSocket, - AllBitwiseCombinations(List<int>{SOCK_STREAM}, - List<int>{0, - SOCK_NONBLOCK})), - ApplyVec<SocketKind>(IPv6TCPUnboundSocket, - AllBitwiseCombinations(List<int>{SOCK_STREAM}, - List<int>{ - 0, SOCK_NONBLOCK})))))); - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_ipv4_tcp_unbound_external_networking.cc b/test/syscalls/linux/socket_ipv4_tcp_unbound_external_networking.cc deleted file mode 100644 index 80f12b0a9..000000000 --- a/test/syscalls/linux/socket_ipv4_tcp_unbound_external_networking.cc +++ /dev/null @@ -1,66 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/syscalls/linux/socket_ipv4_tcp_unbound_external_networking.h" - -#include <netinet/in.h> -#include <sys/socket.h> -#include <sys/types.h> -#include <sys/un.h> - -#include <cstdio> -#include <cstring> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -// Verifies that a newly instantiated TCP socket does not have the -// broadcast socket option enabled. -TEST_P(IPv4TCPUnboundExternalNetworkingSocketTest, TCPBroadcastDefault) { - auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - int get = -1; - socklen_t get_sz = sizeof(get); - EXPECT_THAT( - getsockopt(socket->get(), SOL_SOCKET, SO_BROADCAST, &get, &get_sz), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get, kSockOptOff); - EXPECT_EQ(get_sz, sizeof(get)); -} - -// Verifies that a newly instantiated TCP socket returns true after enabling -// the broadcast socket option. -TEST_P(IPv4TCPUnboundExternalNetworkingSocketTest, SetTCPBroadcast) { - auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - EXPECT_THAT(setsockopt(socket->get(), SOL_SOCKET, SO_BROADCAST, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceedsWithValue(0)); - - int get = -1; - socklen_t get_sz = sizeof(get); - EXPECT_THAT( - getsockopt(socket->get(), SOL_SOCKET, SO_BROADCAST, &get, &get_sz), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get, kSockOptOn); - EXPECT_EQ(get_sz, sizeof(get)); -} - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_ipv4_tcp_unbound_external_networking.h b/test/syscalls/linux/socket_ipv4_tcp_unbound_external_networking.h deleted file mode 100644 index fb582b224..000000000 --- a/test/syscalls/linux/socket_ipv4_tcp_unbound_external_networking.h +++ /dev/null @@ -1,30 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_SYSCALLS_LINUX_SOCKET_IPV4_TCP_UNBOUND_EXTERNAL_NETWORKING_H_ -#define GVISOR_TEST_SYSCALLS_LINUX_SOCKET_IPV4_TCP_UNBOUND_EXTERNAL_NETWORKING_H_ - -#include "test/syscalls/linux/socket_test_util.h" - -namespace gvisor { -namespace testing { - -// Test fixture for tests that apply to unbound IPv4 TCP sockets in a sandbox -// with external networking support. -using IPv4TCPUnboundExternalNetworkingSocketTest = SimpleSocketTest; - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_SYSCALLS_LINUX_SOCKET_IPV4_TCP_UNBOUND_EXTERNAL_NETWORKING_H_ diff --git a/test/syscalls/linux/socket_ipv4_tcp_unbound_external_networking_test.cc b/test/syscalls/linux/socket_ipv4_tcp_unbound_external_networking_test.cc deleted file mode 100644 index 797c4174e..000000000 --- a/test/syscalls/linux/socket_ipv4_tcp_unbound_external_networking_test.cc +++ /dev/null @@ -1,39 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/syscalls/linux/socket_ipv4_tcp_unbound_external_networking.h" - -#include <vector> - -#include "test/syscalls/linux/ip_socket_test_util.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -std::vector<SocketKind> GetSockets() { - return ApplyVec<SocketKind>( - IPv4TCPUnboundSocket, - AllBitwiseCombinations(List<int>{0, SOCK_NONBLOCK})); -} - -INSTANTIATE_TEST_SUITE_P(IPv4TCPUnboundSockets, - IPv4TCPUnboundExternalNetworkingSocketTest, - ::testing::ValuesIn(GetSockets())); - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_ipv4_udp_unbound.cc b/test/syscalls/linux/socket_ipv4_udp_unbound.cc deleted file mode 100644 index 990ccf23c..000000000 --- a/test/syscalls/linux/socket_ipv4_udp_unbound.cc +++ /dev/null @@ -1,2132 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/syscalls/linux/socket_ipv4_udp_unbound.h" - -#include <arpa/inet.h> -#include <sys/ioctl.h> -#include <sys/socket.h> -#include <sys/un.h> - -#include <cstdio> - -#include "gtest/gtest.h" -#include "absl/memory/memory.h" -#include "test/syscalls/linux/ip_socket_test_util.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -// Check that packets are not received without a group membership. Default send -// interface configured by bind. -TEST_P(IPv4UDPUnboundSocketTest, IpMulticastLoopbackNoGroup) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Bind the first FD to the loopback. This is an alternative to - // IP_MULTICAST_IF for setting the default send interface. - auto sender_addr = V4Loopback(); - EXPECT_THAT( - bind(socket1->get(), reinterpret_cast<sockaddr*>(&sender_addr.addr), - sender_addr.addr_len), - SyscallSucceeds()); - - // Bind the second FD to the v4 any address. If multicast worked like unicast, - // this would ensure that we get the packet. - auto receiver_addr = V4Any(); - EXPECT_THAT( - bind(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); - socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(socket2->get(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - &receiver_addr_len), - SyscallSucceeds()); - EXPECT_EQ(receiver_addr_len, receiver_addr.addr_len); - - // Send the multicast packet. - auto send_addr = V4Multicast(); - reinterpret_cast<sockaddr_in*>(&send_addr.addr)->sin_port = - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; - char send_buf[200]; - RandomizeBuffer(send_buf, sizeof(send_buf)); - EXPECT_THAT(RetryEINTR(sendto)(socket1->get(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); - - // Check that we did not receive the multicast packet. - char recv_buf[sizeof(send_buf)] = {}; - EXPECT_THAT(RetryEINTR(recv)(socket2->get(), recv_buf, sizeof(recv_buf), - MSG_DONTWAIT), - SyscallFailsWithErrno(EAGAIN)); -} - -// Check that not setting a default send interface prevents multicast packets -// from being sent. Group membership interface configured by address. -TEST_P(IPv4UDPUnboundSocketTest, IpMulticastLoopbackAddrNoDefaultSendIf) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Bind the second FD to the v4 any address to ensure that we can receive any - // unicast packet. - auto receiver_addr = V4Any(); - EXPECT_THAT( - bind(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); - socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(socket2->get(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - &receiver_addr_len), - SyscallSucceeds()); - EXPECT_EQ(receiver_addr_len, receiver_addr.addr_len); - - // Register to receive multicast packets. - ip_mreq group = {}; - group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); - group.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - EXPECT_THAT(setsockopt(socket2->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, - sizeof(group)), - SyscallSucceeds()); - - // Send a multicast packet. - auto send_addr = V4Multicast(); - reinterpret_cast<sockaddr_in*>(&send_addr.addr)->sin_port = - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; - char send_buf[200]; - RandomizeBuffer(send_buf, sizeof(send_buf)); - EXPECT_THAT(RetryEINTR(sendto)(socket1->get(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallFailsWithErrno(ENETUNREACH)); -} - -// Check that not setting a default send interface prevents multicast packets -// from being sent. Group membership interface configured by NIC ID. -TEST_P(IPv4UDPUnboundSocketTest, IpMulticastLoopbackNicNoDefaultSendIf) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Bind the second FD to the v4 any address to ensure that we can receive any - // unicast packet. - auto receiver_addr = V4Any(); - ASSERT_THAT( - bind(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); - socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(socket2->get(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - &receiver_addr_len), - SyscallSucceeds()); - EXPECT_EQ(receiver_addr_len, receiver_addr.addr_len); - - // Register to receive multicast packets. - ip_mreqn group = {}; - group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); - group.imr_ifindex = ASSERT_NO_ERRNO_AND_VALUE(InterfaceIndex("lo")); - EXPECT_THAT(setsockopt(socket2->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, - sizeof(group)), - SyscallSucceeds()); - - // Send a multicast packet. - auto send_addr = V4Multicast(); - reinterpret_cast<sockaddr_in*>(&send_addr.addr)->sin_port = - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; - char send_buf[200]; - RandomizeBuffer(send_buf, sizeof(send_buf)); - EXPECT_THAT(RetryEINTR(sendto)(socket1->get(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallFailsWithErrno(ENETUNREACH)); -} - -// Check that multicast works when the default send interface is configured by -// bind and the group membership is configured by address. -TEST_P(IPv4UDPUnboundSocketTest, IpMulticastLoopbackAddr) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Bind the first FD to the loopback. This is an alternative to - // IP_MULTICAST_IF for setting the default send interface. - auto sender_addr = V4Loopback(); - ASSERT_THAT( - bind(socket1->get(), reinterpret_cast<sockaddr*>(&sender_addr.addr), - sender_addr.addr_len), - SyscallSucceeds()); - - // Bind the second FD to the v4 any address to ensure that we can receive the - // multicast packet. - auto receiver_addr = V4Any(); - ASSERT_THAT( - bind(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); - socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(socket2->get(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - &receiver_addr_len), - SyscallSucceeds()); - EXPECT_EQ(receiver_addr_len, receiver_addr.addr_len); - - // Register to receive multicast packets. - ip_mreq group = {}; - group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); - group.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - ASSERT_THAT(setsockopt(socket2->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, - sizeof(group)), - SyscallSucceeds()); - - // Send a multicast packet. - auto send_addr = V4Multicast(); - reinterpret_cast<sockaddr_in*>(&send_addr.addr)->sin_port = - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; - char send_buf[200]; - RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT(RetryEINTR(sendto)(socket1->get(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); - - // Check that we received the multicast packet. - char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT(RetryEINTR(recv)(socket2->get(), recv_buf, sizeof(recv_buf), 0), - SyscallSucceedsWithValue(sizeof(recv_buf))); - - EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); -} - -// Check that multicast works when the default send interface is configured by -// bind and the group membership is configured by NIC ID. -TEST_P(IPv4UDPUnboundSocketTest, IpMulticastLoopbackNic) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Bind the first FD to the loopback. This is an alternative to - // IP_MULTICAST_IF for setting the default send interface. - auto sender_addr = V4Loopback(); - ASSERT_THAT( - bind(socket1->get(), reinterpret_cast<sockaddr*>(&sender_addr.addr), - sender_addr.addr_len), - SyscallSucceeds()); - - // Bind the second FD to the v4 any address to ensure that we can receive the - // multicast packet. - auto receiver_addr = V4Any(); - ASSERT_THAT( - bind(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); - socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(socket2->get(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - &receiver_addr_len), - SyscallSucceeds()); - EXPECT_EQ(receiver_addr_len, receiver_addr.addr_len); - - // Register to receive multicast packets. - ip_mreqn group = {}; - group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); - group.imr_ifindex = ASSERT_NO_ERRNO_AND_VALUE(InterfaceIndex("lo")); - ASSERT_THAT(setsockopt(socket2->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, - sizeof(group)), - SyscallSucceeds()); - - // Send a multicast packet. - auto send_addr = V4Multicast(); - reinterpret_cast<sockaddr_in*>(&send_addr.addr)->sin_port = - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; - char send_buf[200]; - RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT(RetryEINTR(sendto)(socket1->get(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); - - // Check that we received the multicast packet. - char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT(RetryEINTR(recv)(socket2->get(), recv_buf, sizeof(recv_buf), 0), - SyscallSucceedsWithValue(sizeof(recv_buf))); - - EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); -} - -// Check that multicast works when the default send interface is configured by -// IP_MULTICAST_IF, the send address is specified in sendto, and the group -// membership is configured by address. -TEST_P(IPv4UDPUnboundSocketTest, IpMulticastLoopbackIfAddr) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Set the default send interface. - ip_mreq iface = {}; - iface.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &iface, - sizeof(iface)), - SyscallSucceeds()); - - // Bind the second FD to the v4 any address to ensure that we can receive the - // multicast packet. - auto receiver_addr = V4Any(); - ASSERT_THAT( - bind(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); - socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(socket2->get(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - &receiver_addr_len), - SyscallSucceeds()); - EXPECT_EQ(receiver_addr_len, receiver_addr.addr_len); - - // Register to receive multicast packets. - ip_mreq group = {}; - group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); - group.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - ASSERT_THAT(setsockopt(socket2->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, - sizeof(group)), - SyscallSucceeds()); - - // Send a multicast packet. - auto send_addr = V4Multicast(); - reinterpret_cast<sockaddr_in*>(&send_addr.addr)->sin_port = - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; - char send_buf[200]; - RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT(RetryEINTR(sendto)(socket1->get(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); - - // Check that we received the multicast packet. - char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT(RetryEINTR(recv)(socket2->get(), recv_buf, sizeof(recv_buf), 0), - SyscallSucceedsWithValue(sizeof(recv_buf))); - - EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); -} - -// Check that multicast works when the default send interface is configured by -// IP_MULTICAST_IF, the send address is specified in sendto, and the group -// membership is configured by NIC ID. -TEST_P(IPv4UDPUnboundSocketTest, IpMulticastLoopbackIfNic) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Set the default send interface. - ip_mreqn iface = {}; - iface.imr_ifindex = ASSERT_NO_ERRNO_AND_VALUE(InterfaceIndex("lo")); - ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &iface, - sizeof(iface)), - SyscallSucceeds()); - - // Bind the second FD to the v4 any address to ensure that we can receive the - // multicast packet. - auto receiver_addr = V4Any(); - ASSERT_THAT( - bind(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); - socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(socket2->get(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - &receiver_addr_len), - SyscallSucceeds()); - EXPECT_EQ(receiver_addr_len, receiver_addr.addr_len); - - // Register to receive multicast packets. - ip_mreqn group = {}; - group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); - group.imr_ifindex = ASSERT_NO_ERRNO_AND_VALUE(InterfaceIndex("lo")); - ASSERT_THAT(setsockopt(socket2->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, - sizeof(group)), - SyscallSucceeds()); - - // Send a multicast packet. - auto send_addr = V4Multicast(); - reinterpret_cast<sockaddr_in*>(&send_addr.addr)->sin_port = - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; - char send_buf[200]; - RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT(RetryEINTR(sendto)(socket1->get(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); - - // Check that we received the multicast packet. - char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT(RetryEINTR(recv)(socket2->get(), recv_buf, sizeof(recv_buf), 0), - SyscallSucceedsWithValue(sizeof(recv_buf))); - - EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); -} - -// Check that multicast works when the default send interface is configured by -// IP_MULTICAST_IF, the send address is specified in connect, and the group -// membership is configured by address. -TEST_P(IPv4UDPUnboundSocketTest, IpMulticastLoopbackIfAddrConnect) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Set the default send interface. - ip_mreq iface = {}; - iface.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &iface, - sizeof(iface)), - SyscallSucceeds()); - - // Bind the second FD to the v4 any address to ensure that we can receive the - // multicast packet. - auto receiver_addr = V4Any(); - ASSERT_THAT( - bind(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); - socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(socket2->get(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - &receiver_addr_len), - SyscallSucceeds()); - EXPECT_EQ(receiver_addr_len, receiver_addr.addr_len); - - // Register to receive multicast packets. - ip_mreq group = {}; - group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); - group.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - ASSERT_THAT(setsockopt(socket2->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, - sizeof(group)), - SyscallSucceeds()); - - // Send a multicast packet. - auto connect_addr = V4Multicast(); - reinterpret_cast<sockaddr_in*>(&connect_addr.addr)->sin_port = - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; - ASSERT_THAT( - RetryEINTR(connect)(socket1->get(), - reinterpret_cast<sockaddr*>(&connect_addr.addr), - connect_addr.addr_len), - SyscallSucceeds()); - - char send_buf[200]; - RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT(RetryEINTR(send)(socket1->get(), send_buf, sizeof(send_buf), 0), - SyscallSucceedsWithValue(sizeof(send_buf))); - - // Check that we received the multicast packet. - char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT(RetryEINTR(recv)(socket2->get(), recv_buf, sizeof(recv_buf), 0), - SyscallSucceedsWithValue(sizeof(recv_buf))); - - EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); -} - -// Check that multicast works when the default send interface is configured by -// IP_MULTICAST_IF, the send address is specified in connect, and the group -// membership is configured by NIC ID. -TEST_P(IPv4UDPUnboundSocketTest, IpMulticastLoopbackIfNicConnect) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Set the default send interface. - ip_mreqn iface = {}; - iface.imr_ifindex = ASSERT_NO_ERRNO_AND_VALUE(InterfaceIndex("lo")); - ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &iface, - sizeof(iface)), - SyscallSucceeds()); - - // Bind the second FD to the v4 any address to ensure that we can receive the - // multicast packet. - auto receiver_addr = V4Any(); - ASSERT_THAT( - bind(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); - socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(socket2->get(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - &receiver_addr_len), - SyscallSucceeds()); - EXPECT_EQ(receiver_addr_len, receiver_addr.addr_len); - - // Register to receive multicast packets. - ip_mreqn group = {}; - group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); - group.imr_ifindex = ASSERT_NO_ERRNO_AND_VALUE(InterfaceIndex("lo")); - ASSERT_THAT(setsockopt(socket2->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, - sizeof(group)), - SyscallSucceeds()); - - // Send a multicast packet. - auto connect_addr = V4Multicast(); - reinterpret_cast<sockaddr_in*>(&connect_addr.addr)->sin_port = - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; - ASSERT_THAT( - RetryEINTR(connect)(socket1->get(), - reinterpret_cast<sockaddr*>(&connect_addr.addr), - connect_addr.addr_len), - SyscallSucceeds()); - - char send_buf[200]; - RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT(RetryEINTR(send)(socket1->get(), send_buf, sizeof(send_buf), 0), - SyscallSucceedsWithValue(sizeof(send_buf))); - - // Check that we received the multicast packet. - char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT(RetryEINTR(recv)(socket2->get(), recv_buf, sizeof(recv_buf), 0), - SyscallSucceedsWithValue(sizeof(recv_buf))); - - EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); -} - -// Check that multicast works when the default send interface is configured by -// IP_MULTICAST_IF, the send address is specified in sendto, and the group -// membership is configured by address. -TEST_P(IPv4UDPUnboundSocketTest, IpMulticastLoopbackIfAddrSelf) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Set the default send interface. - ip_mreq iface = {}; - iface.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &iface, - sizeof(iface)), - SyscallSucceeds()); - - // Bind the first FD to the v4 any address to ensure that we can receive the - // multicast packet. - auto receiver_addr = V4Any(); - ASSERT_THAT( - bind(socket1->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); - socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(socket1->get(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - &receiver_addr_len), - SyscallSucceeds()); - EXPECT_EQ(receiver_addr_len, receiver_addr.addr_len); - - // Register to receive multicast packets. - ip_mreq group = {}; - group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); - group.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, - sizeof(group)), - SyscallSucceeds()); - - // Send a multicast packet. - auto send_addr = V4Multicast(); - reinterpret_cast<sockaddr_in*>(&send_addr.addr)->sin_port = - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; - char send_buf[200]; - RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT(RetryEINTR(sendto)(socket1->get(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); - - // Check that we received the multicast packet. - char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT(RetryEINTR(recv)(socket1->get(), recv_buf, sizeof(recv_buf), 0), - SyscallSucceedsWithValue(sizeof(recv_buf))); - - EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); -} - -// Check that multicast works when the default send interface is configured by -// IP_MULTICAST_IF, the send address is specified in sendto, and the group -// membership is configured by NIC ID. -TEST_P(IPv4UDPUnboundSocketTest, IpMulticastLoopbackIfNicSelf) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Set the default send interface. - ip_mreqn iface = {}; - iface.imr_ifindex = ASSERT_NO_ERRNO_AND_VALUE(InterfaceIndex("lo")); - ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &iface, - sizeof(iface)), - SyscallSucceeds()); - - // Bind the first FD to the v4 any address to ensure that we can receive the - // multicast packet. - auto receiver_addr = V4Any(); - ASSERT_THAT( - bind(socket1->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); - socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(socket1->get(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - &receiver_addr_len), - SyscallSucceeds()); - EXPECT_EQ(receiver_addr_len, receiver_addr.addr_len); - - // Register to receive multicast packets. - ip_mreqn group = {}; - group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); - group.imr_ifindex = ASSERT_NO_ERRNO_AND_VALUE(InterfaceIndex("lo")); - ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, - sizeof(group)), - SyscallSucceeds()); - - // Send a multicast packet. - auto send_addr = V4Multicast(); - reinterpret_cast<sockaddr_in*>(&send_addr.addr)->sin_port = - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; - char send_buf[200]; - RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT(RetryEINTR(sendto)(socket1->get(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); - - // Check that we received the multicast packet. - char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT(RetryEINTR(recv)(socket1->get(), recv_buf, sizeof(recv_buf), 0), - SyscallSucceedsWithValue(sizeof(recv_buf))); - - EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); -} - -// Check that multicast works when the default send interface is configured by -// IP_MULTICAST_IF, the send address is specified in connect, and the group -// membership is configured by address. -TEST_P(IPv4UDPUnboundSocketTest, IpMulticastLoopbackIfAddrSelfConnect) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Set the default send interface. - ip_mreq iface = {}; - iface.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &iface, - sizeof(iface)), - SyscallSucceeds()); - - // Bind the first FD to the v4 any address to ensure that we can receive the - // multicast packet. - auto receiver_addr = V4Any(); - ASSERT_THAT( - bind(socket1->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); - socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(socket1->get(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - &receiver_addr_len), - SyscallSucceeds()); - EXPECT_EQ(receiver_addr_len, receiver_addr.addr_len); - - // Register to receive multicast packets. - ip_mreq group = {}; - group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); - group.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - EXPECT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, - sizeof(group)), - SyscallSucceeds()); - - // Send a multicast packet. - auto connect_addr = V4Multicast(); - reinterpret_cast<sockaddr_in*>(&connect_addr.addr)->sin_port = - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; - EXPECT_THAT( - RetryEINTR(connect)(socket1->get(), - reinterpret_cast<sockaddr*>(&connect_addr.addr), - connect_addr.addr_len), - SyscallSucceeds()); - - char send_buf[200]; - RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT(RetryEINTR(send)(socket1->get(), send_buf, sizeof(send_buf), 0), - SyscallSucceedsWithValue(sizeof(send_buf))); - - // Check that we did not receive the multicast packet. - char recv_buf[sizeof(send_buf)] = {}; - EXPECT_THAT(RetryEINTR(recv)(socket1->get(), recv_buf, sizeof(recv_buf), - MSG_DONTWAIT), - SyscallFailsWithErrno(EAGAIN)); -} - -// Check that multicast works when the default send interface is configured by -// IP_MULTICAST_IF, the send address is specified in connect, and the group -// membership is configured by NIC ID. -TEST_P(IPv4UDPUnboundSocketTest, IpMulticastLoopbackIfNicSelfConnect) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Set the default send interface. - ip_mreqn iface = {}; - iface.imr_ifindex = ASSERT_NO_ERRNO_AND_VALUE(InterfaceIndex("lo")); - ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &iface, - sizeof(iface)), - SyscallSucceeds()); - - // Bind the first FD to the v4 any address to ensure that we can receive the - // multicast packet. - auto receiver_addr = V4Any(); - ASSERT_THAT( - bind(socket1->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); - socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(socket1->get(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - &receiver_addr_len), - SyscallSucceeds()); - EXPECT_EQ(receiver_addr_len, receiver_addr.addr_len); - - // Register to receive multicast packets. - ip_mreqn group = {}; - group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); - group.imr_ifindex = ASSERT_NO_ERRNO_AND_VALUE(InterfaceIndex("lo")); - ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, - sizeof(group)), - SyscallSucceeds()); - - // Send a multicast packet. - auto connect_addr = V4Multicast(); - reinterpret_cast<sockaddr_in*>(&connect_addr.addr)->sin_port = - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; - ASSERT_THAT( - RetryEINTR(connect)(socket1->get(), - reinterpret_cast<sockaddr*>(&connect_addr.addr), - connect_addr.addr_len), - SyscallSucceeds()); - - char send_buf[200]; - RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT(RetryEINTR(send)(socket1->get(), send_buf, sizeof(send_buf), 0), - SyscallSucceedsWithValue(sizeof(send_buf))); - - // Check that we did not receive the multicast packet. - char recv_buf[sizeof(send_buf)] = {}; - EXPECT_THAT(RetryEINTR(recv)(socket1->get(), recv_buf, sizeof(recv_buf), - MSG_DONTWAIT), - SyscallFailsWithErrno(EAGAIN)); -} - -// Check that multicast works when the default send interface is configured by -// IP_MULTICAST_IF, the send address is specified in sendto, and the group -// membership is configured by address. -TEST_P(IPv4UDPUnboundSocketTest, IpMulticastLoopbackIfAddrSelfNoLoop) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Set the default send interface. - ip_mreq iface = {}; - iface.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - EXPECT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &iface, - sizeof(iface)), - SyscallSucceeds()); - - ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_LOOP, - &kSockOptOff, sizeof(kSockOptOff)), - SyscallSucceeds()); - - // Bind the first FD to the v4 any address to ensure that we can receive the - // multicast packet. - auto receiver_addr = V4Any(); - ASSERT_THAT( - bind(socket1->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); - socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(socket1->get(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - &receiver_addr_len), - SyscallSucceeds()); - EXPECT_EQ(receiver_addr_len, receiver_addr.addr_len); - - // Register to receive multicast packets. - ip_mreq group = {}; - group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); - group.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, - sizeof(group)), - SyscallSucceeds()); - - // Send a multicast packet. - auto send_addr = V4Multicast(); - reinterpret_cast<sockaddr_in*>(&send_addr.addr)->sin_port = - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; - char send_buf[200]; - RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT(RetryEINTR(sendto)(socket1->get(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); - - // Check that we received the multicast packet. - char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT(RetryEINTR(recv)(socket1->get(), recv_buf, sizeof(recv_buf), 0), - SyscallSucceedsWithValue(sizeof(recv_buf))); - - EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); -} - -// Check that multicast works when the default send interface is configured by -// IP_MULTICAST_IF, the send address is specified in sendto, and the group -// membership is configured by NIC ID. -TEST_P(IPv4UDPUnboundSocketTest, IpMulticastLoopbackIfNicSelfNoLoop) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Set the default send interface. - ip_mreqn iface = {}; - iface.imr_ifindex = ASSERT_NO_ERRNO_AND_VALUE(InterfaceIndex("lo")); - ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &iface, - sizeof(iface)), - SyscallSucceeds()); - - ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_LOOP, - &kSockOptOff, sizeof(kSockOptOff)), - SyscallSucceeds()); - - // Bind the second FD to the v4 any address to ensure that we can receive the - // multicast packet. - auto receiver_addr = V4Any(); - ASSERT_THAT( - bind(socket1->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); - socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(socket1->get(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - &receiver_addr_len), - SyscallSucceeds()); - EXPECT_EQ(receiver_addr_len, receiver_addr.addr_len); - - // Register to receive multicast packets. - ip_mreqn group = {}; - group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); - group.imr_ifindex = ASSERT_NO_ERRNO_AND_VALUE(InterfaceIndex("lo")); - EXPECT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, - sizeof(group)), - SyscallSucceeds()); - - // Send a multicast packet. - auto send_addr = V4Multicast(); - reinterpret_cast<sockaddr_in*>(&send_addr.addr)->sin_port = - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; - char send_buf[200]; - RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT(RetryEINTR(sendto)(socket1->get(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); - - // Check that we received the multicast packet. - char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT(RetryEINTR(recv)(socket1->get(), recv_buf, sizeof(recv_buf), 0), - SyscallSucceedsWithValue(sizeof(recv_buf))); - - EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); -} - -// Check that dropping a group membership that does not exist fails. -TEST_P(IPv4UDPUnboundSocketTest, IpMulticastInvalidDrop) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Unregister from a membership that we didn't have. - ip_mreq group = {}; - group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); - group.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - EXPECT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_DROP_MEMBERSHIP, &group, - sizeof(group)), - SyscallFailsWithErrno(EADDRNOTAVAIL)); -} - -// Check that dropping a group membership prevents multicast packets from being -// delivered. Default send address configured by bind and group membership -// interface configured by address. -TEST_P(IPv4UDPUnboundSocketTest, IpMulticastDropAddr) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Bind the first FD to the loopback. This is an alternative to - // IP_MULTICAST_IF for setting the default send interface. - auto sender_addr = V4Loopback(); - EXPECT_THAT( - bind(socket1->get(), reinterpret_cast<sockaddr*>(&sender_addr.addr), - sender_addr.addr_len), - SyscallSucceeds()); - - // Bind the second FD to the v4 any address to ensure that we can receive the - // multicast packet. - auto receiver_addr = V4Any(); - EXPECT_THAT( - bind(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); - socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(socket2->get(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - &receiver_addr_len), - SyscallSucceeds()); - EXPECT_EQ(receiver_addr_len, receiver_addr.addr_len); - - // Register and unregister to receive multicast packets. - ip_mreq group = {}; - group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); - group.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - EXPECT_THAT(setsockopt(socket2->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, - sizeof(group)), - SyscallSucceeds()); - EXPECT_THAT(setsockopt(socket2->get(), IPPROTO_IP, IP_DROP_MEMBERSHIP, &group, - sizeof(group)), - SyscallSucceeds()); - - // Send a multicast packet. - auto send_addr = V4Multicast(); - reinterpret_cast<sockaddr_in*>(&send_addr.addr)->sin_port = - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; - char send_buf[200]; - RandomizeBuffer(send_buf, sizeof(send_buf)); - EXPECT_THAT(RetryEINTR(sendto)(socket1->get(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); - - // Check that we did not receive the multicast packet. - char recv_buf[sizeof(send_buf)] = {}; - EXPECT_THAT(RetryEINTR(recv)(socket2->get(), recv_buf, sizeof(recv_buf), - MSG_DONTWAIT), - SyscallFailsWithErrno(EAGAIN)); -} - -// Check that dropping a group membership prevents multicast packets from being -// delivered. Default send address configured by bind and group membership -// interface configured by NIC ID. -TEST_P(IPv4UDPUnboundSocketTest, IpMulticastDropNic) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Bind the first FD to the loopback. This is an alternative to - // IP_MULTICAST_IF for setting the default send interface. - auto sender_addr = V4Loopback(); - EXPECT_THAT( - bind(socket1->get(), reinterpret_cast<sockaddr*>(&sender_addr.addr), - sender_addr.addr_len), - SyscallSucceeds()); - - // Bind the second FD to the v4 any address to ensure that we can receive the - // multicast packet. - auto receiver_addr = V4Any(); - EXPECT_THAT( - bind(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); - socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(socket2->get(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - &receiver_addr_len), - SyscallSucceeds()); - EXPECT_EQ(receiver_addr_len, receiver_addr.addr_len); - - // Register and unregister to receive multicast packets. - ip_mreqn group = {}; - group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); - group.imr_ifindex = ASSERT_NO_ERRNO_AND_VALUE(InterfaceIndex("lo")); - EXPECT_THAT(setsockopt(socket2->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, - sizeof(group)), - SyscallSucceeds()); - EXPECT_THAT(setsockopt(socket2->get(), IPPROTO_IP, IP_DROP_MEMBERSHIP, &group, - sizeof(group)), - SyscallSucceeds()); - - // Send a multicast packet. - auto send_addr = V4Multicast(); - reinterpret_cast<sockaddr_in*>(&send_addr.addr)->sin_port = - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; - char send_buf[200]; - RandomizeBuffer(send_buf, sizeof(send_buf)); - EXPECT_THAT(RetryEINTR(sendto)(socket1->get(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); - - // Check that we did not receive the multicast packet. - char recv_buf[sizeof(send_buf)] = {}; - EXPECT_THAT(RetryEINTR(recv)(socket2->get(), recv_buf, sizeof(recv_buf), - MSG_DONTWAIT), - SyscallFailsWithErrno(EAGAIN)); -} - -TEST_P(IPv4UDPUnboundSocketTest, IpMulticastIfZero) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - ip_mreqn iface = {}; - EXPECT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &iface, - sizeof(iface)), - SyscallSucceeds()); -} - -TEST_P(IPv4UDPUnboundSocketTest, IpMulticastIfInvalidNic) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - ip_mreqn iface = {}; - iface.imr_ifindex = -1; - EXPECT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &iface, - sizeof(iface)), - SyscallFailsWithErrno(EADDRNOTAVAIL)); -} - -TEST_P(IPv4UDPUnboundSocketTest, IpMulticastIfInvalidAddr) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - ip_mreq iface = {}; - iface.imr_interface.s_addr = inet_addr("255.255.255"); - EXPECT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &iface, - sizeof(iface)), - SyscallFailsWithErrno(EADDRNOTAVAIL)); -} - -TEST_P(IPv4UDPUnboundSocketTest, IpMulticastIfSetShort) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Create a valid full-sized request. - ip_mreqn iface = {}; - iface.imr_ifindex = ASSERT_NO_ERRNO_AND_VALUE(InterfaceIndex("lo")); - - // Send an optlen of 1 to check that optlen is enforced. - EXPECT_THAT( - setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &iface, 1), - SyscallFailsWithErrno(EINVAL)); -} - -TEST_P(IPv4UDPUnboundSocketTest, IpMulticastIfDefault) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - in_addr get = {}; - socklen_t size = sizeof(get); - ASSERT_THAT( - getsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &get, &size), - SyscallSucceeds()); - EXPECT_EQ(size, sizeof(get)); - EXPECT_EQ(get.s_addr, 0); -} - -TEST_P(IPv4UDPUnboundSocketTest, IpMulticastIfDefaultReqn) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - ip_mreqn get = {}; - socklen_t size = sizeof(get); - ASSERT_THAT( - getsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &get, &size), - SyscallSucceeds()); - - // getsockopt(IP_MULTICAST_IF) can only return an in_addr, so it treats the - // first sizeof(struct in_addr) bytes of struct ip_mreqn as a struct in_addr. - // Conveniently, this corresponds to the field ip_mreqn::imr_multiaddr. - EXPECT_EQ(size, sizeof(in_addr)); - - // getsockopt(IP_MULTICAST_IF) will only return the interface address which - // hasn't been set. - EXPECT_EQ(get.imr_multiaddr.s_addr, 0); - EXPECT_EQ(get.imr_address.s_addr, 0); - EXPECT_EQ(get.imr_ifindex, 0); -} - -TEST_P(IPv4UDPUnboundSocketTest, IpMulticastIfSetAddrGetReqn) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - in_addr set = {}; - set.s_addr = htonl(INADDR_LOOPBACK); - ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &set, - sizeof(set)), - SyscallSucceeds()); - - ip_mreqn get = {}; - socklen_t size = sizeof(get); - ASSERT_THAT( - getsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &get, &size), - SyscallSucceeds()); - - // getsockopt(IP_MULTICAST_IF) can only return an in_addr, so it treats the - // first sizeof(struct in_addr) bytes of struct ip_mreqn as a struct in_addr. - // Conveniently, this corresponds to the field ip_mreqn::imr_multiaddr. - EXPECT_EQ(size, sizeof(in_addr)); - EXPECT_EQ(get.imr_multiaddr.s_addr, set.s_addr); - EXPECT_EQ(get.imr_address.s_addr, 0); - EXPECT_EQ(get.imr_ifindex, 0); -} - -TEST_P(IPv4UDPUnboundSocketTest, IpMulticastIfSetReqAddrGetReqn) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - ip_mreq set = {}; - set.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &set, - sizeof(set)), - SyscallSucceeds()); - - ip_mreqn get = {}; - socklen_t size = sizeof(get); - ASSERT_THAT( - getsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &get, &size), - SyscallSucceeds()); - - // getsockopt(IP_MULTICAST_IF) can only return an in_addr, so it treats the - // first sizeof(struct in_addr) bytes of struct ip_mreqn as a struct in_addr. - // Conveniently, this corresponds to the field ip_mreqn::imr_multiaddr. - EXPECT_EQ(size, sizeof(in_addr)); - EXPECT_EQ(get.imr_multiaddr.s_addr, set.imr_interface.s_addr); - EXPECT_EQ(get.imr_address.s_addr, 0); - EXPECT_EQ(get.imr_ifindex, 0); -} - -TEST_P(IPv4UDPUnboundSocketTest, IpMulticastIfSetNicGetReqn) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - ip_mreqn set = {}; - set.imr_ifindex = ASSERT_NO_ERRNO_AND_VALUE(InterfaceIndex("lo")); - ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &set, - sizeof(set)), - SyscallSucceeds()); - - ip_mreqn get = {}; - socklen_t size = sizeof(get); - ASSERT_THAT( - getsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &get, &size), - SyscallSucceeds()); - EXPECT_EQ(size, sizeof(in_addr)); - EXPECT_EQ(get.imr_multiaddr.s_addr, 0); - EXPECT_EQ(get.imr_address.s_addr, 0); - EXPECT_EQ(get.imr_ifindex, 0); -} - -TEST_P(IPv4UDPUnboundSocketTest, IpMulticastIfSetAddr) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - in_addr set = {}; - set.s_addr = htonl(INADDR_LOOPBACK); - ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &set, - sizeof(set)), - SyscallSucceeds()); - - in_addr get = {}; - socklen_t size = sizeof(get); - ASSERT_THAT( - getsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &get, &size), - SyscallSucceeds()); - - EXPECT_EQ(size, sizeof(get)); - EXPECT_EQ(get.s_addr, set.s_addr); -} - -TEST_P(IPv4UDPUnboundSocketTest, IpMulticastIfSetReqAddr) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - ip_mreq set = {}; - set.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &set, - sizeof(set)), - SyscallSucceeds()); - - in_addr get = {}; - socklen_t size = sizeof(get); - ASSERT_THAT( - getsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &get, &size), - SyscallSucceeds()); - - EXPECT_EQ(size, sizeof(get)); - EXPECT_EQ(get.s_addr, set.imr_interface.s_addr); -} - -TEST_P(IPv4UDPUnboundSocketTest, IpMulticastIfSetNic) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - ip_mreqn set = {}; - set.imr_ifindex = ASSERT_NO_ERRNO_AND_VALUE(InterfaceIndex("lo")); - ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &set, - sizeof(set)), - SyscallSucceeds()); - - in_addr get = {}; - socklen_t size = sizeof(get); - ASSERT_THAT( - getsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &get, &size), - SyscallSucceeds()); - EXPECT_EQ(size, sizeof(get)); - EXPECT_EQ(get.s_addr, 0); -} - -TEST_P(IPv4UDPUnboundSocketTest, TestJoinGroupNoIf) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - ip_mreqn group = {}; - group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); - EXPECT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, - sizeof(group)), - SyscallFailsWithErrno(ENODEV)); -} - -TEST_P(IPv4UDPUnboundSocketTest, TestJoinGroupInvalidIf) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - ip_mreqn group = {}; - group.imr_address.s_addr = inet_addr("255.255.255"); - group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); - EXPECT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, - sizeof(group)), - SyscallFailsWithErrno(ENODEV)); -} - -// Check that multiple memberships are not allowed on the same socket. -TEST_P(IPv4UDPUnboundSocketTest, TestMultipleJoinsOnSingleSocket) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto fd = socket1->get(); - ip_mreqn group = {}; - group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); - group.imr_ifindex = ASSERT_NO_ERRNO_AND_VALUE(InterfaceIndex("lo")); - - EXPECT_THAT( - setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, sizeof(group)), - SyscallSucceeds()); - - EXPECT_THAT( - setsockopt(fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, sizeof(group)), - SyscallFailsWithErrno(EADDRINUSE)); -} - -// Check that two sockets can join the same multicast group at the same time. -TEST_P(IPv4UDPUnboundSocketTest, TestTwoSocketsJoinSameMulticastGroup) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - ip_mreqn group = {}; - group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); - group.imr_ifindex = ASSERT_NO_ERRNO_AND_VALUE(InterfaceIndex("lo")); - EXPECT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, - sizeof(group)), - SyscallSucceeds()); - EXPECT_THAT(setsockopt(socket2->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, - sizeof(group)), - SyscallSucceeds()); - - // Drop the membership twice on each socket, the second call for each socket - // should fail. - EXPECT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_DROP_MEMBERSHIP, &group, - sizeof(group)), - SyscallSucceeds()); - EXPECT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_DROP_MEMBERSHIP, &group, - sizeof(group)), - SyscallFailsWithErrno(EADDRNOTAVAIL)); - EXPECT_THAT(setsockopt(socket2->get(), IPPROTO_IP, IP_DROP_MEMBERSHIP, &group, - sizeof(group)), - SyscallSucceeds()); - EXPECT_THAT(setsockopt(socket2->get(), IPPROTO_IP, IP_DROP_MEMBERSHIP, &group, - sizeof(group)), - SyscallFailsWithErrno(EADDRNOTAVAIL)); -} - -// Check that two sockets can join the same multicast group at the same time, -// and both will receive data on it. -TEST_P(IPv4UDPUnboundSocketTest, TestMcastReceptionOnTwoSockets) { - std::unique_ptr<SocketPair> socket_pairs[2] = { - absl::make_unique<FDSocketPair>(ASSERT_NO_ERRNO_AND_VALUE(NewSocket()), - ASSERT_NO_ERRNO_AND_VALUE(NewSocket())), - absl::make_unique<FDSocketPair>(ASSERT_NO_ERRNO_AND_VALUE(NewSocket()), - ASSERT_NO_ERRNO_AND_VALUE(NewSocket()))}; - - ip_mreq iface = {}, group = {}; - iface.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); - group.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - auto receiver_addr = V4Any(); - int bound_port = 0; - - // Create two socketpairs with the exact same configuration. - for (auto& sockets : socket_pairs) { - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_IF, - &iface, sizeof(iface)), - SyscallSucceeds()); - ASSERT_THAT(setsockopt(sockets->second_fd(), SOL_SOCKET, SO_REUSEPORT, - &kSockOptOn, sizeof(kSockOptOn)), - SyscallSucceeds()); - ASSERT_THAT(setsockopt(sockets->second_fd(), IPPROTO_IP, IP_ADD_MEMBERSHIP, - &group, sizeof(group)), - SyscallSucceeds()); - ASSERT_THAT(bind(sockets->second_fd(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); - // Get the port assigned. - socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(sockets->second_fd(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - &receiver_addr_len), - SyscallSucceeds()); - EXPECT_EQ(receiver_addr_len, receiver_addr.addr_len); - // On the first iteration, save the port we are bound to. On the second - // iteration, verify the port is the same as the one from the first - // iteration. In other words, both sockets listen on the same port. - if (bound_port == 0) { - bound_port = - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; - } else { - EXPECT_EQ(bound_port, - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port); - } - } - - // Send a multicast packet to the group from two different sockets and verify - // it is received by both sockets that joined that group. - auto send_addr = V4Multicast(); - reinterpret_cast<sockaddr_in*>(&send_addr.addr)->sin_port = bound_port; - for (auto& sockets : socket_pairs) { - char send_buf[200]; - RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT( - RetryEINTR(sendto)(sockets->first_fd(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); - - // Check that we received the multicast packet on both sockets. - for (auto& sockets : socket_pairs) { - char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT( - RetryEINTR(recv)(sockets->second_fd(), recv_buf, sizeof(recv_buf), 0), - SyscallSucceedsWithValue(sizeof(recv_buf))); - EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); - } - } -} - -// Check that on two sockets that joined a group and listen on ANY, dropping -// memberships one by one will continue to deliver packets to both sockets until -// both memberships have been dropped. -TEST_P(IPv4UDPUnboundSocketTest, TestMcastReceptionWhenDroppingMemberships) { - std::unique_ptr<SocketPair> socket_pairs[2] = { - absl::make_unique<FDSocketPair>(ASSERT_NO_ERRNO_AND_VALUE(NewSocket()), - ASSERT_NO_ERRNO_AND_VALUE(NewSocket())), - absl::make_unique<FDSocketPair>(ASSERT_NO_ERRNO_AND_VALUE(NewSocket()), - ASSERT_NO_ERRNO_AND_VALUE(NewSocket()))}; - - ip_mreq iface = {}, group = {}; - iface.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); - group.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - auto receiver_addr = V4Any(); - int bound_port = 0; - - // Create two socketpairs with the exact same configuration. - for (auto& sockets : socket_pairs) { - ASSERT_THAT(setsockopt(sockets->first_fd(), IPPROTO_IP, IP_MULTICAST_IF, - &iface, sizeof(iface)), - SyscallSucceeds()); - ASSERT_THAT(setsockopt(sockets->second_fd(), SOL_SOCKET, SO_REUSEPORT, - &kSockOptOn, sizeof(kSockOptOn)), - SyscallSucceeds()); - ASSERT_THAT(setsockopt(sockets->second_fd(), IPPROTO_IP, IP_ADD_MEMBERSHIP, - &group, sizeof(group)), - SyscallSucceeds()); - ASSERT_THAT(bind(sockets->second_fd(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); - // Get the port assigned. - socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(sockets->second_fd(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - &receiver_addr_len), - SyscallSucceeds()); - EXPECT_EQ(receiver_addr_len, receiver_addr.addr_len); - // On the first iteration, save the port we are bound to. On the second - // iteration, verify the port is the same as the one from the first - // iteration. In other words, both sockets listen on the same port. - if (bound_port == 0) { - bound_port = - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; - } else { - EXPECT_EQ(bound_port, - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port); - } - } - - // Drop the membership of the first socket pair and verify data is still - // received. - ASSERT_THAT(setsockopt(socket_pairs[0]->second_fd(), IPPROTO_IP, - IP_DROP_MEMBERSHIP, &group, sizeof(group)), - SyscallSucceeds()); - // Send a packet from each socket_pair. - auto send_addr = V4Multicast(); - reinterpret_cast<sockaddr_in*>(&send_addr.addr)->sin_port = bound_port; - for (auto& sockets : socket_pairs) { - char send_buf[200]; - RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT( - RetryEINTR(sendto)(sockets->first_fd(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); - - // Check that we received the multicast packet on both sockets. - for (auto& sockets : socket_pairs) { - char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT( - RetryEINTR(recv)(sockets->second_fd(), recv_buf, sizeof(recv_buf), 0), - SyscallSucceedsWithValue(sizeof(recv_buf))); - EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); - } - } - - // Drop the membership of the second socket pair and verify data stops being - // received. - ASSERT_THAT(setsockopt(socket_pairs[1]->second_fd(), IPPROTO_IP, - IP_DROP_MEMBERSHIP, &group, sizeof(group)), - SyscallSucceeds()); - // Send a packet from each socket_pair. - for (auto& sockets : socket_pairs) { - char send_buf[200]; - ASSERT_THAT( - RetryEINTR(sendto)(sockets->first_fd(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); - - char recv_buf[sizeof(send_buf)] = {}; - for (auto& sockets : socket_pairs) { - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), recv_buf, - sizeof(recv_buf), MSG_DONTWAIT), - SyscallFailsWithErrno(EAGAIN)); - } - } -} - -// Check that a receiving socket can bind to the multicast address before -// joining the group and receive data once the group has been joined. -TEST_P(IPv4UDPUnboundSocketTest, TestBindToMcastThenJoinThenReceive) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Bind second socket (receiver) to the multicast address. - auto receiver_addr = V4Multicast(); - ASSERT_THAT( - bind(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); - // Update receiver_addr with the correct port number. - socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(socket2->get(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - &receiver_addr_len), - SyscallSucceeds()); - EXPECT_EQ(receiver_addr_len, receiver_addr.addr_len); - - // Register to receive multicast packets. - ip_mreqn group = {}; - group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); - group.imr_ifindex = ASSERT_NO_ERRNO_AND_VALUE(InterfaceIndex("lo")); - ASSERT_THAT(setsockopt(socket2->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, - sizeof(group)), - SyscallSucceeds()); - - // Send a multicast packet on the first socket out the loopback interface. - ip_mreq iface = {}; - iface.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &iface, - sizeof(iface)), - SyscallSucceeds()); - auto sendto_addr = V4Multicast(); - reinterpret_cast<sockaddr_in*>(&sendto_addr.addr)->sin_port = - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; - char send_buf[200]; - RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT(RetryEINTR(sendto)(socket1->get(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&sendto_addr.addr), - sendto_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); - - // Check that we received the multicast packet. - char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT(RetryEINTR(recv)(socket2->get(), recv_buf, sizeof(recv_buf), - MSG_DONTWAIT), - SyscallSucceedsWithValue(sizeof(recv_buf))); - EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); -} - -// Check that a receiving socket can bind to the multicast address and won't -// receive multicast data if it hasn't joined the group. -TEST_P(IPv4UDPUnboundSocketTest, TestBindToMcastThenNoJoinThenNoReceive) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Bind second socket (receiver) to the multicast address. - auto receiver_addr = V4Multicast(); - ASSERT_THAT( - bind(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); - // Update receiver_addr with the correct port number. - socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(socket2->get(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - &receiver_addr_len), - SyscallSucceeds()); - EXPECT_EQ(receiver_addr_len, receiver_addr.addr_len); - - // Send a multicast packet on the first socket out the loopback interface. - ip_mreq iface = {}; - iface.imr_interface.s_addr = htonl(INADDR_LOOPBACK); - ASSERT_THAT(setsockopt(socket1->get(), IPPROTO_IP, IP_MULTICAST_IF, &iface, - sizeof(iface)), - SyscallSucceeds()); - auto sendto_addr = V4Multicast(); - reinterpret_cast<sockaddr_in*>(&sendto_addr.addr)->sin_port = - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; - char send_buf[200]; - RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT(RetryEINTR(sendto)(socket1->get(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&sendto_addr.addr), - sendto_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); - - // Check that we don't receive the multicast packet. - char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT(RetryEINTR(recv)(socket2->get(), recv_buf, sizeof(recv_buf), - MSG_DONTWAIT), - SyscallFailsWithErrno(EAGAIN)); -} - -// Check that a socket can bind to a multicast address and still send out -// packets. -TEST_P(IPv4UDPUnboundSocketTest, TestBindToMcastThenSend) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Bind second socket (receiver) to the ANY address. - auto receiver_addr = V4Any(); - ASSERT_THAT( - bind(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); - socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(socket2->get(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - &receiver_addr_len), - SyscallSucceeds()); - EXPECT_EQ(receiver_addr_len, receiver_addr.addr_len); - - // Bind the first socket (sender) to the multicast address. - auto sender_addr = V4Multicast(); - ASSERT_THAT( - bind(socket1->get(), reinterpret_cast<sockaddr*>(&sender_addr.addr), - sender_addr.addr_len), - SyscallSucceeds()); - socklen_t sender_addr_len = sender_addr.addr_len; - ASSERT_THAT(getsockname(socket1->get(), - reinterpret_cast<sockaddr*>(&sender_addr.addr), - &sender_addr_len), - SyscallSucceeds()); - EXPECT_EQ(sender_addr_len, sender_addr.addr_len); - - // Send a packet on the first socket to the loopback address. - auto sendto_addr = V4Loopback(); - reinterpret_cast<sockaddr_in*>(&sendto_addr.addr)->sin_port = - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; - char send_buf[200]; - RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT(RetryEINTR(sendto)(socket1->get(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&sendto_addr.addr), - sendto_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); - - // Check that we received the packet. - char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT(RetryEINTR(recv)(socket2->get(), recv_buf, sizeof(recv_buf), - MSG_DONTWAIT), - SyscallSucceedsWithValue(sizeof(recv_buf))); - EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); -} - -// Check that a receiving socket can bind to the broadcast address and receive -// broadcast packets. -TEST_P(IPv4UDPUnboundSocketTest, TestBindToBcastThenReceive) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Bind second socket (receiver) to the broadcast address. - auto receiver_addr = V4Broadcast(); - ASSERT_THAT( - bind(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); - socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(socket2->get(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - &receiver_addr_len), - SyscallSucceeds()); - EXPECT_EQ(receiver_addr_len, receiver_addr.addr_len); - - // Send a broadcast packet on the first socket out the loopback interface. - EXPECT_THAT(setsockopt(socket1->get(), SOL_SOCKET, SO_BROADCAST, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceedsWithValue(0)); - // Note: Binding to the loopback interface makes the broadcast go out of it. - auto sender_bind_addr = V4Loopback(); - ASSERT_THAT( - bind(socket1->get(), reinterpret_cast<sockaddr*>(&sender_bind_addr.addr), - sender_bind_addr.addr_len), - SyscallSucceeds()); - auto sendto_addr = V4Broadcast(); - reinterpret_cast<sockaddr_in*>(&sendto_addr.addr)->sin_port = - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; - char send_buf[200]; - RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT(RetryEINTR(sendto)(socket1->get(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&sendto_addr.addr), - sendto_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); - - // Check that we received the multicast packet. - char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT(RetryEINTR(recv)(socket2->get(), recv_buf, sizeof(recv_buf), - MSG_DONTWAIT), - SyscallSucceedsWithValue(sizeof(recv_buf))); - EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); -} - -// Check that a socket can bind to the broadcast address and still send out -// packets. -TEST_P(IPv4UDPUnboundSocketTest, TestBindToBcastThenSend) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Bind second socket (receiver) to the ANY address. - auto receiver_addr = V4Any(); - ASSERT_THAT( - bind(socket2->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); - socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(socket2->get(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - &receiver_addr_len), - SyscallSucceeds()); - EXPECT_EQ(receiver_addr_len, receiver_addr.addr_len); - - // Bind the first socket (sender) to the broadcast address. - auto sender_addr = V4Broadcast(); - ASSERT_THAT( - bind(socket1->get(), reinterpret_cast<sockaddr*>(&sender_addr.addr), - sender_addr.addr_len), - SyscallSucceeds()); - socklen_t sender_addr_len = sender_addr.addr_len; - ASSERT_THAT(getsockname(socket1->get(), - reinterpret_cast<sockaddr*>(&sender_addr.addr), - &sender_addr_len), - SyscallSucceeds()); - EXPECT_EQ(sender_addr_len, sender_addr.addr_len); - - // Send a packet on the first socket to the loopback address. - auto sendto_addr = V4Loopback(); - reinterpret_cast<sockaddr_in*>(&sendto_addr.addr)->sin_port = - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; - char send_buf[200]; - RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT(RetryEINTR(sendto)(socket1->get(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&sendto_addr.addr), - sendto_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); - - // Check that we received the packet. - char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT(RetryEINTR(recv)(socket2->get(), recv_buf, sizeof(recv_buf), - MSG_DONTWAIT), - SyscallSucceedsWithValue(sizeof(recv_buf))); - EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); -} - -// Check that SO_REUSEADDR always delivers to the most recently bound socket. -TEST_P(IPv4UDPUnboundSocketTest, ReuseAddrDistribution) { - // FIXME(b/129164367): Support SO_REUSEADDR on UDP sockets. - SKIP_IF(IsRunningOnGvisor()); - - std::vector<std::unique_ptr<FileDescriptor>> sockets; - sockets.emplace_back(ASSERT_NO_ERRNO_AND_VALUE(NewSocket())); - - ASSERT_THAT(setsockopt(sockets[0]->get(), SOL_SOCKET, SO_REUSEADDR, - &kSockOptOn, sizeof(kSockOptOn)), - SyscallSucceeds()); - - // Bind the first socket to the loopback and take note of the selected port. - auto addr = V4Loopback(); - ASSERT_THAT(bind(sockets[0]->get(), reinterpret_cast<sockaddr*>(&addr.addr), - addr.addr_len), - SyscallSucceeds()); - socklen_t addr_len = addr.addr_len; - ASSERT_THAT(getsockname(sockets[0]->get(), - reinterpret_cast<sockaddr*>(&addr.addr), &addr_len), - SyscallSucceeds()); - EXPECT_EQ(addr_len, addr.addr_len); - - constexpr int kMessageSize = 200; - - for (int i = 0; i < 10; i++) { - // Add a new receiver. - sockets.emplace_back(ASSERT_NO_ERRNO_AND_VALUE(NewSocket())); - auto& last = sockets.back(); - ASSERT_THAT(setsockopt(last->get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - ASSERT_THAT(bind(last->get(), reinterpret_cast<sockaddr*>(&addr.addr), - addr.addr_len), - SyscallSucceeds()); - - // Send a new message to the SO_REUSEADDR group. We use a new socket each - // time so that a new ephemeral port will be used each time. This ensures - // that we aren't doing REUSEPORT-like hash load blancing. - auto sender = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - char send_buf[kMessageSize]; - RandomizeBuffer(send_buf, sizeof(send_buf)); - EXPECT_THAT(RetryEINTR(sendto)(sender->get(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&addr.addr), - addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); - - // Verify that the most recent socket got the message. We don't expect any - // of the other sockets to have received it, but we will check that later. - char recv_buf[sizeof(send_buf)] = {}; - EXPECT_THAT( - RetryEINTR(recv)(last->get(), recv_buf, sizeof(recv_buf), MSG_DONTWAIT), - SyscallSucceedsWithValue(sizeof(send_buf))); - EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); - } - - // Verify that no other messages were received. - for (auto& socket : sockets) { - char recv_buf[kMessageSize] = {}; - EXPECT_THAT(RetryEINTR(recv)(socket->get(), recv_buf, sizeof(recv_buf), - MSG_DONTWAIT), - SyscallFailsWithErrno(EAGAIN)); - } -} - -TEST_P(IPv4UDPUnboundSocketTest, BindReuseAddrThenReusePort) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Bind socket1 with REUSEADDR. - ASSERT_THAT(setsockopt(socket1->get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - - // Bind the first socket to the loopback and take note of the selected port. - auto addr = V4Loopback(); - ASSERT_THAT(bind(socket1->get(), reinterpret_cast<sockaddr*>(&addr.addr), - addr.addr_len), - SyscallSucceeds()); - socklen_t addr_len = addr.addr_len; - ASSERT_THAT(getsockname(socket1->get(), - reinterpret_cast<sockaddr*>(&addr.addr), &addr_len), - SyscallSucceeds()); - EXPECT_EQ(addr_len, addr.addr_len); - - // Bind socket2 to the same address as socket1, only with REUSEPORT. - ASSERT_THAT(setsockopt(socket2->get(), SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - ASSERT_THAT(bind(socket2->get(), reinterpret_cast<sockaddr*>(&addr.addr), - addr.addr_len), - SyscallFailsWithErrno(EADDRINUSE)); -} - -TEST_P(IPv4UDPUnboundSocketTest, BindReusePortThenReuseAddr) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Bind socket1 with REUSEPORT. - ASSERT_THAT(setsockopt(socket1->get(), SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - - // Bind the first socket to the loopback and take note of the selected port. - auto addr = V4Loopback(); - ASSERT_THAT(bind(socket1->get(), reinterpret_cast<sockaddr*>(&addr.addr), - addr.addr_len), - SyscallSucceeds()); - socklen_t addr_len = addr.addr_len; - ASSERT_THAT(getsockname(socket1->get(), - reinterpret_cast<sockaddr*>(&addr.addr), &addr_len), - SyscallSucceeds()); - EXPECT_EQ(addr_len, addr.addr_len); - - // Bind socket2 to the same address as socket1, only with REUSEADDR. - ASSERT_THAT(setsockopt(socket2->get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - ASSERT_THAT(bind(socket2->get(), reinterpret_cast<sockaddr*>(&addr.addr), - addr.addr_len), - SyscallFailsWithErrno(EADDRINUSE)); -} - -TEST_P(IPv4UDPUnboundSocketTest, BindReuseAddrReusePortConvertibleToReusePort) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket3 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Bind socket1 with REUSEADDR and REUSEPORT. - ASSERT_THAT(setsockopt(socket1->get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - ASSERT_THAT(setsockopt(socket1->get(), SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - - // Bind the first socket to the loopback and take note of the selected port. - auto addr = V4Loopback(); - ASSERT_THAT(bind(socket1->get(), reinterpret_cast<sockaddr*>(&addr.addr), - addr.addr_len), - SyscallSucceeds()); - socklen_t addr_len = addr.addr_len; - ASSERT_THAT(getsockname(socket1->get(), - reinterpret_cast<sockaddr*>(&addr.addr), &addr_len), - SyscallSucceeds()); - EXPECT_EQ(addr_len, addr.addr_len); - - // Bind socket2 to the same address as socket1, only with REUSEPORT. - ASSERT_THAT(setsockopt(socket2->get(), SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - ASSERT_THAT(bind(socket2->get(), reinterpret_cast<sockaddr*>(&addr.addr), - addr.addr_len), - SyscallSucceeds()); - - // Bind socket3 to the same address as socket1, only with REUSEADDR. - ASSERT_THAT(setsockopt(socket3->get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - ASSERT_THAT(bind(socket3->get(), reinterpret_cast<sockaddr*>(&addr.addr), - addr.addr_len), - SyscallFailsWithErrno(EADDRINUSE)); -} - -TEST_P(IPv4UDPUnboundSocketTest, BindReuseAddrReusePortConvertibleToReuseAddr) { - // FIXME(b/129164367): Support SO_REUSEADDR on UDP sockets. - SKIP_IF(IsRunningOnGvisor()); - - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket3 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Bind socket1 with REUSEADDR and REUSEPORT. - ASSERT_THAT(setsockopt(socket1->get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - ASSERT_THAT(setsockopt(socket1->get(), SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - - // Bind the first socket to the loopback and take note of the selected port. - auto addr = V4Loopback(); - ASSERT_THAT(bind(socket1->get(), reinterpret_cast<sockaddr*>(&addr.addr), - addr.addr_len), - SyscallSucceeds()); - socklen_t addr_len = addr.addr_len; - ASSERT_THAT(getsockname(socket1->get(), - reinterpret_cast<sockaddr*>(&addr.addr), &addr_len), - SyscallSucceeds()); - EXPECT_EQ(addr_len, addr.addr_len); - - // Bind socket2 to the same address as socket1, only with REUSEADDR. - ASSERT_THAT(setsockopt(socket2->get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - ASSERT_THAT(bind(socket2->get(), reinterpret_cast<sockaddr*>(&addr.addr), - addr.addr_len), - SyscallSucceeds()); - - // Bind socket3 to the same address as socket1, only with REUSEPORT. - ASSERT_THAT(setsockopt(socket3->get(), SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - ASSERT_THAT(bind(socket3->get(), reinterpret_cast<sockaddr*>(&addr.addr), - addr.addr_len), - SyscallFailsWithErrno(EADDRINUSE)); -} - -TEST_P(IPv4UDPUnboundSocketTest, BindReuseAddrReusePortConversionReversable1) { - // FIXME(b/129164367): Support SO_REUSEADDR on UDP sockets. - SKIP_IF(IsRunningOnGvisor()); - - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket3 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Bind socket1 with REUSEADDR and REUSEPORT. - ASSERT_THAT(setsockopt(socket1->get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - ASSERT_THAT(setsockopt(socket1->get(), SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - - // Bind the first socket to the loopback and take note of the selected port. - auto addr = V4Loopback(); - ASSERT_THAT(bind(socket1->get(), reinterpret_cast<sockaddr*>(&addr.addr), - addr.addr_len), - SyscallSucceeds()); - socklen_t addr_len = addr.addr_len; - ASSERT_THAT(getsockname(socket1->get(), - reinterpret_cast<sockaddr*>(&addr.addr), &addr_len), - SyscallSucceeds()); - EXPECT_EQ(addr_len, addr.addr_len); - - // Bind socket2 to the same address as socket1, only with REUSEPORT. - ASSERT_THAT(setsockopt(socket2->get(), SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - ASSERT_THAT(bind(socket2->get(), reinterpret_cast<sockaddr*>(&addr.addr), - addr.addr_len), - SyscallSucceeds()); - - // Close socket2 to revert to just socket1 with REUSEADDR and REUSEPORT. - socket2->reset(); - - // Bind socket3 to the same address as socket1, only with REUSEADDR. - ASSERT_THAT(setsockopt(socket3->get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - ASSERT_THAT(bind(socket3->get(), reinterpret_cast<sockaddr*>(&addr.addr), - addr.addr_len), - SyscallSucceeds()); -} - -TEST_P(IPv4UDPUnboundSocketTest, BindReuseAddrReusePortConversionReversable2) { - // FIXME(b/129164367): Support SO_REUSEADDR on UDP sockets. - SKIP_IF(IsRunningOnGvisor()); - - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket3 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Bind socket1 with REUSEADDR and REUSEPORT. - ASSERT_THAT(setsockopt(socket1->get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - ASSERT_THAT(setsockopt(socket1->get(), SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - - // Bind the first socket to the loopback and take note of the selected port. - auto addr = V4Loopback(); - ASSERT_THAT(bind(socket1->get(), reinterpret_cast<sockaddr*>(&addr.addr), - addr.addr_len), - SyscallSucceeds()); - socklen_t addr_len = addr.addr_len; - ASSERT_THAT(getsockname(socket1->get(), - reinterpret_cast<sockaddr*>(&addr.addr), &addr_len), - SyscallSucceeds()); - EXPECT_EQ(addr_len, addr.addr_len); - - // Bind socket2 to the same address as socket1, only with REUSEADDR. - ASSERT_THAT(setsockopt(socket2->get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - ASSERT_THAT(bind(socket2->get(), reinterpret_cast<sockaddr*>(&addr.addr), - addr.addr_len), - SyscallSucceeds()); - - // Close socket2 to revert to just socket1 with REUSEADDR and REUSEPORT. - socket2->reset(); - - // Bind socket3 to the same address as socket1, only with REUSEPORT. - ASSERT_THAT(setsockopt(socket3->get(), SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - ASSERT_THAT(bind(socket3->get(), reinterpret_cast<sockaddr*>(&addr.addr), - addr.addr_len), - SyscallSucceeds()); -} - -TEST_P(IPv4UDPUnboundSocketTest, BindDoubleReuseAddrReusePortThenReusePort) { - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket3 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Bind socket1 with REUSEADDR and REUSEPORT. - ASSERT_THAT(setsockopt(socket1->get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - ASSERT_THAT(setsockopt(socket1->get(), SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - - // Bind the first socket to the loopback and take note of the selected port. - auto addr = V4Loopback(); - ASSERT_THAT(bind(socket1->get(), reinterpret_cast<sockaddr*>(&addr.addr), - addr.addr_len), - SyscallSucceeds()); - socklen_t addr_len = addr.addr_len; - ASSERT_THAT(getsockname(socket1->get(), - reinterpret_cast<sockaddr*>(&addr.addr), &addr_len), - SyscallSucceeds()); - EXPECT_EQ(addr_len, addr.addr_len); - - // Bind socket2 to the same address as socket1, also with REUSEADDR and - // REUSEPORT. - ASSERT_THAT(setsockopt(socket2->get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - ASSERT_THAT(setsockopt(socket2->get(), SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - - ASSERT_THAT(bind(socket2->get(), reinterpret_cast<sockaddr*>(&addr.addr), - addr.addr_len), - SyscallSucceeds()); - - // Bind socket3 to the same address as socket1, only with REUSEPORT. - ASSERT_THAT(setsockopt(socket3->get(), SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - ASSERT_THAT(bind(socket3->get(), reinterpret_cast<sockaddr*>(&addr.addr), - addr.addr_len), - SyscallSucceeds()); -} - -TEST_P(IPv4UDPUnboundSocketTest, BindDoubleReuseAddrReusePortThenReuseAddr) { - // FIXME(b/129164367): Support SO_REUSEADDR on UDP sockets. - SKIP_IF(IsRunningOnGvisor()); - - auto socket1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto socket3 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Bind socket1 with REUSEADDR and REUSEPORT. - ASSERT_THAT(setsockopt(socket1->get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - ASSERT_THAT(setsockopt(socket1->get(), SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - - // Bind the first socket to the loopback and take note of the selected port. - auto addr = V4Loopback(); - ASSERT_THAT(bind(socket1->get(), reinterpret_cast<sockaddr*>(&addr.addr), - addr.addr_len), - SyscallSucceeds()); - socklen_t addr_len = addr.addr_len; - ASSERT_THAT(getsockname(socket1->get(), - reinterpret_cast<sockaddr*>(&addr.addr), &addr_len), - SyscallSucceeds()); - EXPECT_EQ(addr_len, addr.addr_len); - - // Bind socket2 to the same address as socket1, also with REUSEADDR and - // REUSEPORT. - ASSERT_THAT(setsockopt(socket2->get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - ASSERT_THAT(setsockopt(socket2->get(), SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - - ASSERT_THAT(bind(socket2->get(), reinterpret_cast<sockaddr*>(&addr.addr), - addr.addr_len), - SyscallSucceeds()); - - // Bind socket3 to the same address as socket1, only with REUSEADDR. - ASSERT_THAT(setsockopt(socket3->get(), SOL_SOCKET, SO_REUSEADDR, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - ASSERT_THAT(bind(socket3->get(), reinterpret_cast<sockaddr*>(&addr.addr), - addr.addr_len), - SyscallSucceeds()); -} - -// Check that REUSEPORT takes precedence over REUSEADDR. -TEST_P(IPv4UDPUnboundSocketTest, ReuseAddrReusePortDistribution) { - auto receiver1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto receiver2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - ASSERT_THAT(setsockopt(receiver1->get(), SOL_SOCKET, SO_REUSEADDR, - &kSockOptOn, sizeof(kSockOptOn)), - SyscallSucceeds()); - ASSERT_THAT(setsockopt(receiver1->get(), SOL_SOCKET, SO_REUSEPORT, - &kSockOptOn, sizeof(kSockOptOn)), - SyscallSucceeds()); - - // Bind the first socket to the loopback and take note of the selected port. - auto addr = V4Loopback(); - ASSERT_THAT(bind(receiver1->get(), reinterpret_cast<sockaddr*>(&addr.addr), - addr.addr_len), - SyscallSucceeds()); - socklen_t addr_len = addr.addr_len; - ASSERT_THAT(getsockname(receiver1->get(), - reinterpret_cast<sockaddr*>(&addr.addr), &addr_len), - SyscallSucceeds()); - EXPECT_EQ(addr_len, addr.addr_len); - - // Bind receiver2 to the same address as socket1, also with REUSEADDR and - // REUSEPORT. - ASSERT_THAT(setsockopt(receiver2->get(), SOL_SOCKET, SO_REUSEADDR, - &kSockOptOn, sizeof(kSockOptOn)), - SyscallSucceeds()); - ASSERT_THAT(setsockopt(receiver2->get(), SOL_SOCKET, SO_REUSEPORT, - &kSockOptOn, sizeof(kSockOptOn)), - SyscallSucceeds()); - ASSERT_THAT(bind(receiver2->get(), reinterpret_cast<sockaddr*>(&addr.addr), - addr.addr_len), - SyscallSucceeds()); - - constexpr int kMessageSize = 10; - - for (int i = 0; i < 100; ++i) { - // Send a new message to the REUSEADDR/REUSEPORT group. We use a new socket - // each time so that a new ephemerial port will be used each time. This - // ensures that we cycle through hashes. - auto sender = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - char send_buf[kMessageSize] = {}; - EXPECT_THAT(RetryEINTR(sendto)(sender->get(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&addr.addr), - addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); - } - - // Check that both receivers got messages. This checks that we are using load - // balancing (REUSEPORT) instead of the most recently bound socket - // (REUSEADDR). - char recv_buf[kMessageSize] = {}; - EXPECT_THAT(RetryEINTR(recv)(receiver1->get(), recv_buf, sizeof(recv_buf), - MSG_DONTWAIT), - SyscallSucceedsWithValue(kMessageSize)); - EXPECT_THAT(RetryEINTR(recv)(receiver2->get(), recv_buf, sizeof(recv_buf), - MSG_DONTWAIT), - SyscallSucceedsWithValue(kMessageSize)); -} - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_ipv4_udp_unbound.h b/test/syscalls/linux/socket_ipv4_udp_unbound.h deleted file mode 100644 index f64c57645..000000000 --- a/test/syscalls/linux/socket_ipv4_udp_unbound.h +++ /dev/null @@ -1,29 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_SYSCALLS_LINUX_SOCKET_IPV4_UDP_UNBOUND_H_ -#define GVISOR_TEST_SYSCALLS_LINUX_SOCKET_IPV4_UDP_UNBOUND_H_ - -#include "test/syscalls/linux/socket_test_util.h" - -namespace gvisor { -namespace testing { - -// Test fixture for tests that apply to IPv4 UDP sockets. -using IPv4UDPUnboundSocketTest = SimpleSocketTest; - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_SYSCALLS_LINUX_SOCKET_IPV4_UDP_UNBOUND_H_ diff --git a/test/syscalls/linux/socket_ipv4_udp_unbound_external_networking.cc b/test/syscalls/linux/socket_ipv4_udp_unbound_external_networking.cc deleted file mode 100644 index 40e673625..000000000 --- a/test/syscalls/linux/socket_ipv4_udp_unbound_external_networking.cc +++ /dev/null @@ -1,1104 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/syscalls/linux/socket_ipv4_udp_unbound_external_networking.h" - -#include <arpa/inet.h> -#include <ifaddrs.h> -#include <netinet/in.h> -#include <sys/socket.h> -#include <sys/types.h> -#include <sys/un.h> - -#include <cstdint> -#include <cstdio> -#include <cstring> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "test/syscalls/linux/ip_socket_test_util.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -TestAddress V4EmptyAddress() { - TestAddress t("V4Empty"); - t.addr.ss_family = AF_INET; - t.addr_len = sizeof(sockaddr_in); - return t; -} - -void IPv4UDPUnboundExternalNetworkingSocketTest::SetUp() { - got_if_infos_ = false; - - // Get interface list. - std::vector<std::string> if_names; - ASSERT_NO_ERRNO(if_helper_.Load()); - if_names = if_helper_.InterfaceList(AF_INET); - if (if_names.size() != 2) { - return; - } - - // Figure out which interface is where. - int lo = 0, eth = 1; - if (if_names[lo] != "lo") { - lo = 1; - eth = 0; - } - - if (if_names[lo] != "lo") { - return; - } - - lo_if_idx_ = ASSERT_NO_ERRNO_AND_VALUE(if_helper_.GetIndex(if_names[lo])); - lo_if_addr_ = if_helper_.GetAddr(AF_INET, if_names[lo]); - if (lo_if_addr_ == nullptr) { - return; - } - lo_if_sin_addr_ = reinterpret_cast<sockaddr_in*>(lo_if_addr_)->sin_addr; - - eth_if_idx_ = ASSERT_NO_ERRNO_AND_VALUE(if_helper_.GetIndex(if_names[eth])); - eth_if_addr_ = if_helper_.GetAddr(AF_INET, if_names[eth]); - if (eth_if_addr_ == nullptr) { - return; - } - eth_if_sin_addr_ = reinterpret_cast<sockaddr_in*>(eth_if_addr_)->sin_addr; - - got_if_infos_ = true; -} - -// Verifies that a newly instantiated UDP socket does not have the -// broadcast socket option enabled. -TEST_P(IPv4UDPUnboundExternalNetworkingSocketTest, UDPBroadcastDefault) { - auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - int get = -1; - socklen_t get_sz = sizeof(get); - EXPECT_THAT( - getsockopt(socket->get(), SOL_SOCKET, SO_BROADCAST, &get, &get_sz), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get, kSockOptOff); - EXPECT_EQ(get_sz, sizeof(get)); -} - -// Verifies that a newly instantiated UDP socket returns true after enabling -// the broadcast socket option. -TEST_P(IPv4UDPUnboundExternalNetworkingSocketTest, SetUDPBroadcast) { - auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - EXPECT_THAT(setsockopt(socket->get(), SOL_SOCKET, SO_BROADCAST, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceedsWithValue(0)); - - int get = -1; - socklen_t get_sz = sizeof(get); - EXPECT_THAT( - getsockopt(socket->get(), SOL_SOCKET, SO_BROADCAST, &get, &get_sz), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get, kSockOptOn); - EXPECT_EQ(get_sz, sizeof(get)); -} - -// Verifies that a broadcast UDP packet will arrive at all UDP sockets with -// the destination port number. -TEST_P(IPv4UDPUnboundExternalNetworkingSocketTest, - UDPBroadcastReceivedOnExpectedPort) { - auto sender = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto rcvr1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto rcvr2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto norcv = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Enable SO_BROADCAST on the sending socket. - ASSERT_THAT(setsockopt(sender->get(), SOL_SOCKET, SO_BROADCAST, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceedsWithValue(0)); - - // Enable SO_REUSEPORT on the receiving sockets so that they may both be bound - // to the broadcast messages destination port. - ASSERT_THAT(setsockopt(rcvr1->get(), SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceedsWithValue(0)); - ASSERT_THAT(setsockopt(rcvr2->get(), SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceedsWithValue(0)); - - // Bind the first socket to the ANY address and let the system assign a port. - auto rcv1_addr = V4Any(); - ASSERT_THAT(bind(rcvr1->get(), reinterpret_cast<sockaddr*>(&rcv1_addr.addr), - rcv1_addr.addr_len), - SyscallSucceedsWithValue(0)); - // Retrieve port number from first socket so that it can be bound to the - // second socket. - socklen_t rcv_addr_sz = rcv1_addr.addr_len; - ASSERT_THAT( - getsockname(rcvr1->get(), reinterpret_cast<sockaddr*>(&rcv1_addr.addr), - &rcv_addr_sz), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(rcv_addr_sz, rcv1_addr.addr_len); - auto port = reinterpret_cast<sockaddr_in*>(&rcv1_addr.addr)->sin_port; - - // Bind the second socket to the same address:port as the first. - ASSERT_THAT(bind(rcvr2->get(), reinterpret_cast<sockaddr*>(&rcv1_addr.addr), - rcv_addr_sz), - SyscallSucceedsWithValue(0)); - - // Bind the non-receiving socket to an ephemeral port. - auto norecv_addr = V4Any(); - ASSERT_THAT(bind(norcv->get(), reinterpret_cast<sockaddr*>(&norecv_addr.addr), - norecv_addr.addr_len), - SyscallSucceedsWithValue(0)); - - // Broadcast a test message. - auto dst_addr = V4Broadcast(); - reinterpret_cast<sockaddr_in*>(&dst_addr.addr)->sin_port = port; - constexpr char kTestMsg[] = "hello, world"; - EXPECT_THAT( - sendto(sender->get(), kTestMsg, sizeof(kTestMsg), 0, - reinterpret_cast<sockaddr*>(&dst_addr.addr), dst_addr.addr_len), - SyscallSucceedsWithValue(sizeof(kTestMsg))); - - // Verify that the receiving sockets received the test message. - char buf[sizeof(kTestMsg)] = {}; - EXPECT_THAT(recv(rcvr1->get(), buf, sizeof(buf), 0), - SyscallSucceedsWithValue(sizeof(kTestMsg))); - EXPECT_EQ(0, memcmp(buf, kTestMsg, sizeof(kTestMsg))); - memset(buf, 0, sizeof(buf)); - EXPECT_THAT(recv(rcvr2->get(), buf, sizeof(buf), 0), - SyscallSucceedsWithValue(sizeof(kTestMsg))); - EXPECT_EQ(0, memcmp(buf, kTestMsg, sizeof(kTestMsg))); - - // Verify that the non-receiving socket did not receive the test message. - memset(buf, 0, sizeof(buf)); - EXPECT_THAT(RetryEINTR(recv)(norcv->get(), buf, sizeof(buf), MSG_DONTWAIT), - SyscallFailsWithErrno(EAGAIN)); -} - -// Verifies that a broadcast UDP packet will arrive at all UDP sockets bound to -// the destination port number and either INADDR_ANY or INADDR_BROADCAST, but -// not a unicast address. -TEST_P(IPv4UDPUnboundExternalNetworkingSocketTest, - UDPBroadcastReceivedOnExpectedAddresses) { - // FIXME(b/137899561): Linux instance for syscall tests sometimes misses its - // IPv4 address on eth0. - SKIP_IF(!got_if_infos_); - - auto sender = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto rcvr1 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto rcvr2 = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto norcv = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Enable SO_BROADCAST on the sending socket. - ASSERT_THAT(setsockopt(sender->get(), SOL_SOCKET, SO_BROADCAST, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceedsWithValue(0)); - - // Enable SO_REUSEPORT on all sockets so that they may all be bound to the - // broadcast messages destination port. - ASSERT_THAT(setsockopt(rcvr1->get(), SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceedsWithValue(0)); - ASSERT_THAT(setsockopt(rcvr2->get(), SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceedsWithValue(0)); - ASSERT_THAT(setsockopt(norcv->get(), SOL_SOCKET, SO_REUSEPORT, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceedsWithValue(0)); - - // Bind the first socket the ANY address and let the system assign a port. - auto rcv1_addr = V4Any(); - ASSERT_THAT(bind(rcvr1->get(), reinterpret_cast<sockaddr*>(&rcv1_addr.addr), - rcv1_addr.addr_len), - SyscallSucceedsWithValue(0)); - // Retrieve port number from first socket so that it can be bound to the - // second socket. - socklen_t rcv_addr_sz = rcv1_addr.addr_len; - ASSERT_THAT( - getsockname(rcvr1->get(), reinterpret_cast<sockaddr*>(&rcv1_addr.addr), - &rcv_addr_sz), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(rcv_addr_sz, rcv1_addr.addr_len); - auto port = reinterpret_cast<sockaddr_in*>(&rcv1_addr.addr)->sin_port; - - // Bind the second socket to the broadcast address. - auto rcv2_addr = V4Broadcast(); - reinterpret_cast<sockaddr_in*>(&rcv2_addr.addr)->sin_port = port; - ASSERT_THAT(bind(rcvr2->get(), reinterpret_cast<sockaddr*>(&rcv2_addr.addr), - rcv2_addr.addr_len), - SyscallSucceedsWithValue(0)); - - // Bind the non-receiving socket to the unicast ethernet address. - auto norecv_addr = rcv1_addr; - reinterpret_cast<sockaddr_in*>(&norecv_addr.addr)->sin_addr = - eth_if_sin_addr_; - ASSERT_THAT(bind(norcv->get(), reinterpret_cast<sockaddr*>(&norecv_addr.addr), - norecv_addr.addr_len), - SyscallSucceedsWithValue(0)); - - // Broadcast a test message. - auto dst_addr = V4Broadcast(); - reinterpret_cast<sockaddr_in*>(&dst_addr.addr)->sin_port = port; - constexpr char kTestMsg[] = "hello, world"; - EXPECT_THAT( - sendto(sender->get(), kTestMsg, sizeof(kTestMsg), 0, - reinterpret_cast<sockaddr*>(&dst_addr.addr), dst_addr.addr_len), - SyscallSucceedsWithValue(sizeof(kTestMsg))); - - // Verify that the receiving sockets received the test message. - char buf[sizeof(kTestMsg)] = {}; - EXPECT_THAT(recv(rcvr1->get(), buf, sizeof(buf), 0), - SyscallSucceedsWithValue(sizeof(kTestMsg))); - EXPECT_EQ(0, memcmp(buf, kTestMsg, sizeof(kTestMsg))); - memset(buf, 0, sizeof(buf)); - EXPECT_THAT(recv(rcvr2->get(), buf, sizeof(buf), 0), - SyscallSucceedsWithValue(sizeof(kTestMsg))); - EXPECT_EQ(0, memcmp(buf, kTestMsg, sizeof(kTestMsg))); - - // Verify that the non-receiving socket did not receive the test message. - memset(buf, 0, sizeof(buf)); - EXPECT_THAT(RetryEINTR(recv)(norcv->get(), buf, sizeof(buf), MSG_DONTWAIT), - SyscallFailsWithErrno(EAGAIN)); -} - -// Verifies that a UDP broadcast can be sent and then received back on the same -// socket that is bound to the broadcast address (255.255.255.255). -// FIXME(b/141938460): This can be combined with the next test -// (UDPBroadcastSendRecvOnSocketBoundToAny). -TEST_P(IPv4UDPUnboundExternalNetworkingSocketTest, - UDPBroadcastSendRecvOnSocketBoundToBroadcast) { - auto sender = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Enable SO_BROADCAST. - ASSERT_THAT(setsockopt(sender->get(), SOL_SOCKET, SO_BROADCAST, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceedsWithValue(0)); - - // Bind the sender to the broadcast address. - auto src_addr = V4Broadcast(); - ASSERT_THAT(bind(sender->get(), reinterpret_cast<sockaddr*>(&src_addr.addr), - src_addr.addr_len), - SyscallSucceedsWithValue(0)); - socklen_t src_sz = src_addr.addr_len; - ASSERT_THAT(getsockname(sender->get(), - reinterpret_cast<sockaddr*>(&src_addr.addr), &src_sz), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(src_sz, src_addr.addr_len); - - // Send the message. - auto dst_addr = V4Broadcast(); - reinterpret_cast<sockaddr_in*>(&dst_addr.addr)->sin_port = - reinterpret_cast<sockaddr_in*>(&src_addr.addr)->sin_port; - constexpr char kTestMsg[] = "hello, world"; - EXPECT_THAT( - sendto(sender->get(), kTestMsg, sizeof(kTestMsg), 0, - reinterpret_cast<sockaddr*>(&dst_addr.addr), dst_addr.addr_len), - SyscallSucceedsWithValue(sizeof(kTestMsg))); - - // Verify that the message was received. - char buf[sizeof(kTestMsg)] = {}; - EXPECT_THAT(RetryEINTR(recv)(sender->get(), buf, sizeof(buf), 0), - SyscallSucceedsWithValue(sizeof(kTestMsg))); - EXPECT_EQ(0, memcmp(buf, kTestMsg, sizeof(kTestMsg))); -} - -// Verifies that a UDP broadcast can be sent and then received back on the same -// socket that is bound to the ANY address (0.0.0.0). -// FIXME(b/141938460): This can be combined with the previous test -// (UDPBroadcastSendRecvOnSocketBoundToBroadcast). -TEST_P(IPv4UDPUnboundExternalNetworkingSocketTest, - UDPBroadcastSendRecvOnSocketBoundToAny) { - auto sender = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Enable SO_BROADCAST. - ASSERT_THAT(setsockopt(sender->get(), SOL_SOCKET, SO_BROADCAST, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceedsWithValue(0)); - - // Bind the sender to the ANY address. - auto src_addr = V4Any(); - ASSERT_THAT(bind(sender->get(), reinterpret_cast<sockaddr*>(&src_addr.addr), - src_addr.addr_len), - SyscallSucceedsWithValue(0)); - socklen_t src_sz = src_addr.addr_len; - ASSERT_THAT(getsockname(sender->get(), - reinterpret_cast<sockaddr*>(&src_addr.addr), &src_sz), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(src_sz, src_addr.addr_len); - - // Send the message. - auto dst_addr = V4Broadcast(); - reinterpret_cast<sockaddr_in*>(&dst_addr.addr)->sin_port = - reinterpret_cast<sockaddr_in*>(&src_addr.addr)->sin_port; - constexpr char kTestMsg[] = "hello, world"; - EXPECT_THAT( - sendto(sender->get(), kTestMsg, sizeof(kTestMsg), 0, - reinterpret_cast<sockaddr*>(&dst_addr.addr), dst_addr.addr_len), - SyscallSucceedsWithValue(sizeof(kTestMsg))); - - // Verify that the message was received. - char buf[sizeof(kTestMsg)] = {}; - EXPECT_THAT(RetryEINTR(recv)(sender->get(), buf, sizeof(buf), 0), - SyscallSucceedsWithValue(sizeof(kTestMsg))); - EXPECT_EQ(0, memcmp(buf, kTestMsg, sizeof(kTestMsg))); -} - -// Verifies that a UDP broadcast fails to send on a socket with SO_BROADCAST -// disabled. -TEST_P(IPv4UDPUnboundExternalNetworkingSocketTest, TestSendBroadcast) { - auto sender = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Broadcast a test message without having enabled SO_BROADCAST on the sending - // socket. - auto addr = V4Broadcast(); - reinterpret_cast<sockaddr_in*>(&addr.addr)->sin_port = htons(12345); - constexpr char kTestMsg[] = "hello, world"; - - EXPECT_THAT(sendto(sender->get(), kTestMsg, sizeof(kTestMsg), 0, - reinterpret_cast<sockaddr*>(&addr.addr), addr.addr_len), - SyscallFailsWithErrno(EACCES)); -} - -// Verifies that a UDP unicast on an unbound socket reaches its destination. -TEST_P(IPv4UDPUnboundExternalNetworkingSocketTest, TestSendUnicastOnUnbound) { - auto sender = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto rcvr = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Bind the receiver and retrieve its address and port number. - sockaddr_in addr = {}; - addr.sin_family = AF_INET; - addr.sin_addr.s_addr = htonl(INADDR_ANY); - addr.sin_port = htons(0); - ASSERT_THAT(bind(rcvr->get(), reinterpret_cast<struct sockaddr*>(&addr), - sizeof(addr)), - SyscallSucceedsWithValue(0)); - memset(&addr, 0, sizeof(addr)); - socklen_t addr_sz = sizeof(addr); - ASSERT_THAT(getsockname(rcvr->get(), - reinterpret_cast<struct sockaddr*>(&addr), &addr_sz), - SyscallSucceedsWithValue(0)); - - // Send a test message to the receiver. - constexpr char kTestMsg[] = "hello, world"; - ASSERT_THAT(sendto(sender->get(), kTestMsg, sizeof(kTestMsg), 0, - reinterpret_cast<struct sockaddr*>(&addr), addr_sz), - SyscallSucceedsWithValue(sizeof(kTestMsg))); - char buf[sizeof(kTestMsg)] = {}; - ASSERT_THAT(recv(rcvr->get(), buf, sizeof(buf), 0), - SyscallSucceedsWithValue(sizeof(kTestMsg))); -} - -// Check that multicast packets won't be delivered to the sending socket with no -// set interface or group membership. -TEST_P(IPv4UDPUnboundExternalNetworkingSocketTest, - TestSendMulticastSelfNoGroup) { - // FIXME(b/125485338): A group membership is not required for external - // multicast on gVisor. - SKIP_IF(IsRunningOnGvisor()); - - auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - auto bind_addr = V4Any(); - ASSERT_THAT(bind(socket->get(), reinterpret_cast<sockaddr*>(&bind_addr.addr), - bind_addr.addr_len), - SyscallSucceeds()); - socklen_t bind_addr_len = bind_addr.addr_len; - ASSERT_THAT( - getsockname(socket->get(), reinterpret_cast<sockaddr*>(&bind_addr.addr), - &bind_addr_len), - SyscallSucceeds()); - EXPECT_EQ(bind_addr_len, bind_addr.addr_len); - - // Send a multicast packet. - auto send_addr = V4Multicast(); - reinterpret_cast<sockaddr_in*>(&send_addr.addr)->sin_port = - reinterpret_cast<sockaddr_in*>(&bind_addr.addr)->sin_port; - char send_buf[200]; - RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT(RetryEINTR(sendto)(socket->get(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); - - // Check that we did not receive the multicast packet. - char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT( - RetryEINTR(recv)(socket->get(), recv_buf, sizeof(recv_buf), MSG_DONTWAIT), - SyscallFailsWithErrno(EAGAIN)); -} - -// Check that multicast packets will be delivered to the sending socket without -// setting an interface. -TEST_P(IPv4UDPUnboundExternalNetworkingSocketTest, TestSendMulticastSelf) { - auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - auto bind_addr = V4Any(); - ASSERT_THAT(bind(socket->get(), reinterpret_cast<sockaddr*>(&bind_addr.addr), - bind_addr.addr_len), - SyscallSucceeds()); - socklen_t bind_addr_len = bind_addr.addr_len; - ASSERT_THAT( - getsockname(socket->get(), reinterpret_cast<sockaddr*>(&bind_addr.addr), - &bind_addr_len), - SyscallSucceeds()); - EXPECT_EQ(bind_addr_len, bind_addr.addr_len); - - // Register to receive multicast packets. - ip_mreq group = {}; - group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); - ASSERT_THAT(setsockopt(socket->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, - sizeof(group)), - SyscallSucceeds()); - - // Send a multicast packet. - auto send_addr = V4Multicast(); - reinterpret_cast<sockaddr_in*>(&send_addr.addr)->sin_port = - reinterpret_cast<sockaddr_in*>(&bind_addr.addr)->sin_port; - char send_buf[200]; - RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT(RetryEINTR(sendto)(socket->get(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); - - // Check that we received the multicast packet. - char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT(RetryEINTR(recv)(socket->get(), recv_buf, sizeof(recv_buf), 0), - SyscallSucceedsWithValue(sizeof(recv_buf))); - - EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); -} - -// Check that multicast packets won't be delivered to the sending socket with no -// set interface and IP_MULTICAST_LOOP disabled. -TEST_P(IPv4UDPUnboundExternalNetworkingSocketTest, - TestSendMulticastSelfLoopOff) { - auto socket = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - auto bind_addr = V4Any(); - ASSERT_THAT(bind(socket->get(), reinterpret_cast<sockaddr*>(&bind_addr.addr), - bind_addr.addr_len), - SyscallSucceeds()); - socklen_t bind_addr_len = bind_addr.addr_len; - ASSERT_THAT( - getsockname(socket->get(), reinterpret_cast<sockaddr*>(&bind_addr.addr), - &bind_addr_len), - SyscallSucceeds()); - EXPECT_EQ(bind_addr_len, bind_addr.addr_len); - - // Disable multicast looping. - EXPECT_THAT(setsockopt(socket->get(), IPPROTO_IP, IP_MULTICAST_LOOP, - &kSockOptOff, sizeof(kSockOptOff)), - SyscallSucceeds()); - - // Register to receive multicast packets. - ip_mreq group = {}; - group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); - EXPECT_THAT(setsockopt(socket->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, - sizeof(group)), - SyscallSucceeds()); - - // Send a multicast packet. - auto send_addr = V4Multicast(); - reinterpret_cast<sockaddr_in*>(&send_addr.addr)->sin_port = - reinterpret_cast<sockaddr_in*>(&bind_addr.addr)->sin_port; - char send_buf[200]; - RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT(RetryEINTR(sendto)(socket->get(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); - - // Check that we did not receive the multicast packet. - char recv_buf[sizeof(send_buf)] = {}; - EXPECT_THAT( - RetryEINTR(recv)(socket->get(), recv_buf, sizeof(recv_buf), MSG_DONTWAIT), - SyscallFailsWithErrno(EAGAIN)); -} - -// Check that multicast packets won't be delivered to another socket with no -// set interface or group membership. -TEST_P(IPv4UDPUnboundExternalNetworkingSocketTest, TestSendMulticastNoGroup) { - // FIXME(b/125485338): A group membership is not required for external - // multicast on gVisor. - SKIP_IF(IsRunningOnGvisor()); - - auto sender = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto receiver = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Bind the second FD to the v4 any address to ensure that we can receive the - // multicast packet. - auto receiver_addr = V4Any(); - ASSERT_THAT( - bind(receiver->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); - socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(receiver->get(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - &receiver_addr_len), - SyscallSucceeds()); - EXPECT_EQ(receiver_addr_len, receiver_addr.addr_len); - - // Send a multicast packet. - auto send_addr = V4Multicast(); - reinterpret_cast<sockaddr_in*>(&send_addr.addr)->sin_port = - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; - char send_buf[200]; - RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT(RetryEINTR(sendto)(sender->get(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); - - // Check that we did not receive the multicast packet. - char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT(RetryEINTR(recv)(receiver->get(), recv_buf, sizeof(recv_buf), - MSG_DONTWAIT), - SyscallFailsWithErrno(EAGAIN)); -} - -// Check that multicast packets will be delivered to another socket without -// setting an interface. -TEST_P(IPv4UDPUnboundExternalNetworkingSocketTest, TestSendMulticast) { - auto sender = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto receiver = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Bind the second FD to the v4 any address to ensure that we can receive the - // multicast packet. - auto receiver_addr = V4Any(); - ASSERT_THAT( - bind(receiver->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); - socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(receiver->get(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - &receiver_addr_len), - SyscallSucceeds()); - EXPECT_EQ(receiver_addr_len, receiver_addr.addr_len); - - // Register to receive multicast packets. - ip_mreqn group = {}; - group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); - ASSERT_THAT(setsockopt(receiver->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, - sizeof(group)), - SyscallSucceeds()); - - // Send a multicast packet. - auto send_addr = V4Multicast(); - reinterpret_cast<sockaddr_in*>(&send_addr.addr)->sin_port = - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; - char send_buf[200]; - RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT(RetryEINTR(sendto)(sender->get(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); - - // Check that we received the multicast packet. - char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT(RetryEINTR(recv)(receiver->get(), recv_buf, sizeof(recv_buf), 0), - SyscallSucceedsWithValue(sizeof(recv_buf))); - - EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); -} - -// Check that multicast packets won't be delivered to another socket with no -// set interface and IP_MULTICAST_LOOP disabled on the sending socket. -TEST_P(IPv4UDPUnboundExternalNetworkingSocketTest, - TestSendMulticastSenderNoLoop) { - auto sender = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto receiver = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Bind the second FD to the v4 any address to ensure that we can receive the - // multicast packet. - auto receiver_addr = V4Any(); - ASSERT_THAT( - bind(receiver->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); - socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(receiver->get(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - &receiver_addr_len), - SyscallSucceeds()); - EXPECT_EQ(receiver_addr_len, receiver_addr.addr_len); - - // Disable multicast looping on the sender. - EXPECT_THAT(setsockopt(sender->get(), IPPROTO_IP, IP_MULTICAST_LOOP, - &kSockOptOff, sizeof(kSockOptOff)), - SyscallSucceeds()); - - // Register to receive multicast packets. - ip_mreqn group = {}; - group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); - EXPECT_THAT(setsockopt(receiver->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, - sizeof(group)), - SyscallSucceeds()); - - // Send a multicast packet. - auto send_addr = V4Multicast(); - reinterpret_cast<sockaddr_in*>(&send_addr.addr)->sin_port = - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; - char send_buf[200]; - RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT(RetryEINTR(sendto)(sender->get(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); - - // Check that we did not receive the multicast packet. - char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT(RetryEINTR(recv)(receiver->get(), recv_buf, sizeof(recv_buf), - MSG_DONTWAIT), - SyscallFailsWithErrno(EAGAIN)); -} - -// Check that multicast packets will be delivered to the sending socket without -// setting an interface and IP_MULTICAST_LOOP disabled on the receiving socket. -TEST_P(IPv4UDPUnboundExternalNetworkingSocketTest, - TestSendMulticastReceiverNoLoop) { - auto sender = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto receiver = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - // Bind the second FD to the v4 any address to ensure that we can receive the - // multicast packet. - auto receiver_addr = V4Any(); - ASSERT_THAT( - bind(receiver->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); - socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(receiver->get(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - &receiver_addr_len), - SyscallSucceeds()); - EXPECT_EQ(receiver_addr_len, receiver_addr.addr_len); - - // Disable multicast looping on the receiver. - ASSERT_THAT(setsockopt(receiver->get(), IPPROTO_IP, IP_MULTICAST_LOOP, - &kSockOptOff, sizeof(kSockOptOff)), - SyscallSucceeds()); - - // Register to receive multicast packets. - ip_mreqn group = {}; - group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); - ASSERT_THAT(setsockopt(receiver->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, - sizeof(group)), - SyscallSucceeds()); - - // Send a multicast packet. - auto send_addr = V4Multicast(); - reinterpret_cast<sockaddr_in*>(&send_addr.addr)->sin_port = - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; - char send_buf[200]; - RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT(RetryEINTR(sendto)(sender->get(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); - - // Check that we received the multicast packet. - char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT(RetryEINTR(recv)(receiver->get(), recv_buf, sizeof(recv_buf), 0), - SyscallSucceedsWithValue(sizeof(recv_buf))); - - EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); -} - -// Check that two sockets can join the same multicast group at the same time, -// and both will receive data on it when bound to the ANY address. -TEST_P(IPv4UDPUnboundExternalNetworkingSocketTest, - TestSendMulticastToTwoBoundToAny) { - auto sender = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - std::unique_ptr<FileDescriptor> receivers[2] = { - ASSERT_NO_ERRNO_AND_VALUE(NewSocket()), - ASSERT_NO_ERRNO_AND_VALUE(NewSocket())}; - - ip_mreq group = {}; - group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); - auto receiver_addr = V4Any(); - int bound_port = 0; - for (auto& receiver : receivers) { - ASSERT_THAT(setsockopt(receiver->get(), SOL_SOCKET, SO_REUSEPORT, - &kSockOptOn, sizeof(kSockOptOn)), - SyscallSucceeds()); - // Bind to ANY to receive multicast packets. - ASSERT_THAT( - bind(receiver->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); - socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(receiver->get(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - &receiver_addr_len), - SyscallSucceeds()); - EXPECT_EQ(receiver_addr_len, receiver_addr.addr_len); - EXPECT_EQ( - htonl(INADDR_ANY), - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_addr.s_addr); - // On the first iteration, save the port we are bound to. On the second - // iteration, verify the port is the same as the one from the first - // iteration. In other words, both sockets listen on the same port. - if (bound_port == 0) { - bound_port = - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; - } else { - EXPECT_EQ(bound_port, - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port); - } - - // Register to receive multicast packets. - ASSERT_THAT(setsockopt(receiver->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, - &group, sizeof(group)), - SyscallSucceeds()); - } - - // Send a multicast packet to the group and verify both receivers get it. - auto send_addr = V4Multicast(); - reinterpret_cast<sockaddr_in*>(&send_addr.addr)->sin_port = bound_port; - char send_buf[200]; - RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT(RetryEINTR(sendto)(sender->get(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); - for (auto& receiver : receivers) { - char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT( - RetryEINTR(recv)(receiver->get(), recv_buf, sizeof(recv_buf), 0), - SyscallSucceedsWithValue(sizeof(recv_buf))); - EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); - } -} - -// Check that two sockets can join the same multicast group at the same time, -// and both will receive data on it when bound to the multicast address. -TEST_P(IPv4UDPUnboundExternalNetworkingSocketTest, - TestSendMulticastToTwoBoundToMulticastAddress) { - auto sender = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - std::unique_ptr<FileDescriptor> receivers[2] = { - ASSERT_NO_ERRNO_AND_VALUE(NewSocket()), - ASSERT_NO_ERRNO_AND_VALUE(NewSocket())}; - - ip_mreq group = {}; - group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); - auto receiver_addr = V4Multicast(); - int bound_port = 0; - for (auto& receiver : receivers) { - ASSERT_THAT(setsockopt(receiver->get(), SOL_SOCKET, SO_REUSEPORT, - &kSockOptOn, sizeof(kSockOptOn)), - SyscallSucceeds()); - ASSERT_THAT( - bind(receiver->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); - socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(receiver->get(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - &receiver_addr_len), - SyscallSucceeds()); - EXPECT_EQ(receiver_addr_len, receiver_addr.addr_len); - EXPECT_EQ( - inet_addr(kMulticastAddress), - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_addr.s_addr); - // On the first iteration, save the port we are bound to. On the second - // iteration, verify the port is the same as the one from the first - // iteration. In other words, both sockets listen on the same port. - if (bound_port == 0) { - bound_port = - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; - } else { - EXPECT_EQ( - inet_addr(kMulticastAddress), - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_addr.s_addr); - EXPECT_EQ(bound_port, - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port); - } - - // Register to receive multicast packets. - ASSERT_THAT(setsockopt(receiver->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, - &group, sizeof(group)), - SyscallSucceeds()); - } - - // Send a multicast packet to the group and verify both receivers get it. - auto send_addr = V4Multicast(); - reinterpret_cast<sockaddr_in*>(&send_addr.addr)->sin_port = bound_port; - char send_buf[200]; - RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT(RetryEINTR(sendto)(sender->get(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); - for (auto& receiver : receivers) { - char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT( - RetryEINTR(recv)(receiver->get(), recv_buf, sizeof(recv_buf), 0), - SyscallSucceedsWithValue(sizeof(recv_buf))); - EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); - } -} - -// Check that two sockets can join the same multicast group at the same time, -// and with one bound to the wildcard address and the other bound to the -// multicast address, both will receive data. -TEST_P(IPv4UDPUnboundExternalNetworkingSocketTest, - TestSendMulticastToTwoBoundToAnyAndMulticastAddress) { - auto sender = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - std::unique_ptr<FileDescriptor> receivers[2] = { - ASSERT_NO_ERRNO_AND_VALUE(NewSocket()), - ASSERT_NO_ERRNO_AND_VALUE(NewSocket())}; - - ip_mreq group = {}; - group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); - // The first receiver binds to the wildcard address. - auto receiver_addr = V4Any(); - int bound_port = 0; - for (auto& receiver : receivers) { - ASSERT_THAT(setsockopt(receiver->get(), SOL_SOCKET, SO_REUSEPORT, - &kSockOptOn, sizeof(kSockOptOn)), - SyscallSucceeds()); - ASSERT_THAT( - bind(receiver->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); - socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(receiver->get(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - &receiver_addr_len), - SyscallSucceeds()); - EXPECT_EQ(receiver_addr_len, receiver_addr.addr_len); - // On the first iteration, save the port we are bound to and change the - // receiver address from V4Any to V4Multicast so the second receiver binds - // to that. On the second iteration, verify the port is the same as the one - // from the first iteration but the address is different. - if (bound_port == 0) { - EXPECT_EQ( - htonl(INADDR_ANY), - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_addr.s_addr); - bound_port = - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; - receiver_addr = V4Multicast(); - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port = - bound_port; - } else { - EXPECT_EQ( - inet_addr(kMulticastAddress), - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_addr.s_addr); - EXPECT_EQ(bound_port, - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port); - } - - // Register to receive multicast packets. - ASSERT_THAT(setsockopt(receiver->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, - &group, sizeof(group)), - SyscallSucceeds()); - } - - // Send a multicast packet to the group and verify both receivers get it. - auto send_addr = V4Multicast(); - reinterpret_cast<sockaddr_in*>(&send_addr.addr)->sin_port = bound_port; - char send_buf[200]; - RandomizeBuffer(send_buf, sizeof(send_buf)); - ASSERT_THAT(RetryEINTR(sendto)(sender->get(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&send_addr.addr), - send_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); - for (auto& receiver : receivers) { - char recv_buf[sizeof(send_buf)] = {}; - ASSERT_THAT( - RetryEINTR(recv)(receiver->get(), recv_buf, sizeof(recv_buf), 0), - SyscallSucceedsWithValue(sizeof(recv_buf))); - EXPECT_EQ(0, memcmp(send_buf, recv_buf, sizeof(send_buf))); - } -} - -// Check that when receiving a looped-back multicast packet, its source address -// is not a multicast address. -TEST_P(IPv4UDPUnboundExternalNetworkingSocketTest, - IpMulticastLoopbackFromAddr) { - auto sender = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto receiver = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - - auto receiver_addr = V4Any(); - ASSERT_THAT( - bind(receiver->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); - socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(receiver->get(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - &receiver_addr_len), - SyscallSucceeds()); - EXPECT_EQ(receiver_addr_len, receiver_addr.addr_len); - int receiver_port = - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; - - ip_mreq group = {}; - group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); - ASSERT_THAT(setsockopt(receiver->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, - sizeof(group)), - SyscallSucceeds()); - - // Connect to the multicast address. This binds us to the outgoing interface - // and allows us to get its IP (to be compared against the src-IP on the - // receiver side). - auto sendto_addr = V4Multicast(); - reinterpret_cast<sockaddr_in*>(&sendto_addr.addr)->sin_port = receiver_port; - ASSERT_THAT(RetryEINTR(connect)( - sender->get(), reinterpret_cast<sockaddr*>(&sendto_addr.addr), - sendto_addr.addr_len), - SyscallSucceeds()); - auto sender_addr = V4EmptyAddress(); - ASSERT_THAT( - getsockname(sender->get(), reinterpret_cast<sockaddr*>(&sender_addr.addr), - &sender_addr.addr_len), - SyscallSucceeds()); - ASSERT_EQ(sizeof(struct sockaddr_in), sender_addr.addr_len); - sockaddr_in* sender_addr_in = - reinterpret_cast<sockaddr_in*>(&sender_addr.addr); - - // Send a multicast packet. - char send_buf[4] = {}; - ASSERT_THAT(RetryEINTR(send)(sender->get(), send_buf, sizeof(send_buf), 0), - SyscallSucceedsWithValue(sizeof(send_buf))); - - // Receive a multicast packet. - char recv_buf[sizeof(send_buf)] = {}; - auto src_addr = V4EmptyAddress(); - ASSERT_THAT( - RetryEINTR(recvfrom)(receiver->get(), recv_buf, sizeof(recv_buf), 0, - reinterpret_cast<sockaddr*>(&src_addr.addr), - &src_addr.addr_len), - SyscallSucceedsWithValue(sizeof(recv_buf))); - ASSERT_EQ(sizeof(struct sockaddr_in), src_addr.addr_len); - sockaddr_in* src_addr_in = reinterpret_cast<sockaddr_in*>(&src_addr.addr); - - // Verify that the received source IP:port matches the sender one. - EXPECT_EQ(sender_addr_in->sin_port, src_addr_in->sin_port); - EXPECT_EQ(sender_addr_in->sin_addr.s_addr, src_addr_in->sin_addr.s_addr); -} - -// Check that when setting the IP_MULTICAST_IF option to both an index pointing -// to the loopback interface and an address pointing to the non-loopback -// interface, a multicast packet sent out uses the latter as its source address. -TEST_P(IPv4UDPUnboundExternalNetworkingSocketTest, - IpMulticastLoopbackIfNicAndAddr) { - // FIXME(b/137899561): Linux instance for syscall tests sometimes misses its - // IPv4 address on eth0. - SKIP_IF(!got_if_infos_); - - // Create receiver, bind to ANY and join the multicast group. - auto receiver = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - auto receiver_addr = V4Any(); - ASSERT_THAT( - bind(receiver->get(), reinterpret_cast<sockaddr*>(&receiver_addr.addr), - receiver_addr.addr_len), - SyscallSucceeds()); - socklen_t receiver_addr_len = receiver_addr.addr_len; - ASSERT_THAT(getsockname(receiver->get(), - reinterpret_cast<sockaddr*>(&receiver_addr.addr), - &receiver_addr_len), - SyscallSucceeds()); - EXPECT_EQ(receiver_addr_len, receiver_addr.addr_len); - int receiver_port = - reinterpret_cast<sockaddr_in*>(&receiver_addr.addr)->sin_port; - ip_mreqn group = {}; - group.imr_multiaddr.s_addr = inet_addr(kMulticastAddress); - group.imr_ifindex = lo_if_idx_; - ASSERT_THAT(setsockopt(receiver->get(), IPPROTO_IP, IP_ADD_MEMBERSHIP, &group, - sizeof(group)), - SyscallSucceeds()); - - // Set outgoing multicast interface config, with NIC and addr pointing to - // different interfaces. - auto sender = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - ip_mreqn iface = {}; - iface.imr_ifindex = lo_if_idx_; - iface.imr_address = eth_if_sin_addr_; - ASSERT_THAT(setsockopt(sender->get(), IPPROTO_IP, IP_MULTICAST_IF, &iface, - sizeof(iface)), - SyscallSucceeds()); - - // Send a multicast packet. - auto sendto_addr = V4Multicast(); - reinterpret_cast<sockaddr_in*>(&sendto_addr.addr)->sin_port = receiver_port; - char send_buf[4] = {}; - ASSERT_THAT(RetryEINTR(sendto)(sender->get(), send_buf, sizeof(send_buf), 0, - reinterpret_cast<sockaddr*>(&sendto_addr.addr), - sendto_addr.addr_len), - SyscallSucceedsWithValue(sizeof(send_buf))); - - // Receive a multicast packet. - char recv_buf[sizeof(send_buf)] = {}; - auto src_addr = V4EmptyAddress(); - ASSERT_THAT( - RetryEINTR(recvfrom)(receiver->get(), recv_buf, sizeof(recv_buf), 0, - reinterpret_cast<sockaddr*>(&src_addr.addr), - &src_addr.addr_len), - SyscallSucceedsWithValue(sizeof(recv_buf))); - ASSERT_EQ(sizeof(struct sockaddr_in), src_addr.addr_len); - sockaddr_in* src_addr_in = reinterpret_cast<sockaddr_in*>(&src_addr.addr); - - // FIXME (b/137781162): When sending a multicast packet use the proper logic - // to determine the packet's src-IP. - SKIP_IF(IsRunningOnGvisor()); - - // Verify the received source address. - EXPECT_EQ(eth_if_sin_addr_.s_addr, src_addr_in->sin_addr.s_addr); -} - -// Check that when we are bound to one interface we can set IP_MULTICAST_IF to -// another interface. -TEST_P(IPv4UDPUnboundExternalNetworkingSocketTest, - IpMulticastLoopbackBindToOneIfSetMcastIfToAnother) { - // FIXME(b/137899561): Linux instance for syscall tests sometimes misses its - // IPv4 address on eth0. - SKIP_IF(!got_if_infos_); - - // FIXME (b/137790511): When bound to one interface it is not possible to set - // IP_MULTICAST_IF to a different interface. - SKIP_IF(IsRunningOnGvisor()); - - // Create sender and bind to eth interface. - auto sender = ASSERT_NO_ERRNO_AND_VALUE(NewSocket()); - ASSERT_THAT(bind(sender->get(), eth_if_addr_, sizeof(sockaddr_in)), - SyscallSucceeds()); - - // Run through all possible combinations of index and address for - // IP_MULTICAST_IF that selects the loopback interface. - struct { - int imr_ifindex; - struct in_addr imr_address; - } test_data[] = { - {lo_if_idx_, {}}, - {0, lo_if_sin_addr_}, - {lo_if_idx_, lo_if_sin_addr_}, - {lo_if_idx_, eth_if_sin_addr_}, - }; - for (auto t : test_data) { - ip_mreqn iface = {}; - iface.imr_ifindex = t.imr_ifindex; - iface.imr_address = t.imr_address; - EXPECT_THAT(setsockopt(sender->get(), IPPROTO_IP, IP_MULTICAST_IF, &iface, - sizeof(iface)), - SyscallSucceeds()) - << "imr_index=" << iface.imr_ifindex - << " imr_address=" << GetAddr4Str(&iface.imr_address); - } -} -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_ipv4_udp_unbound_external_networking.h b/test/syscalls/linux/socket_ipv4_udp_unbound_external_networking.h deleted file mode 100644 index bec2e96ee..000000000 --- a/test/syscalls/linux/socket_ipv4_udp_unbound_external_networking.h +++ /dev/null @@ -1,48 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_SYSCALLS_LINUX_SOCKET_IPV4_UDP_UNBOUND_EXTERNAL_NETWORKING_H_ -#define GVISOR_TEST_SYSCALLS_LINUX_SOCKET_IPV4_UDP_UNBOUND_EXTERNAL_NETWORKING_H_ - -#include "test/syscalls/linux/ip_socket_test_util.h" -#include "test/syscalls/linux/socket_test_util.h" - -namespace gvisor { -namespace testing { - -// Test fixture for tests that apply to unbound IPv4 UDP sockets in a sandbox -// with external networking support. -class IPv4UDPUnboundExternalNetworkingSocketTest : public SimpleSocketTest { - protected: - void SetUp(); - - IfAddrHelper if_helper_; - - // got_if_infos_ is set to false if SetUp() could not obtain all interface - // infos that we need. - bool got_if_infos_; - - // Interface infos. - int lo_if_idx_; - int eth_if_idx_; - sockaddr* lo_if_addr_; - sockaddr* eth_if_addr_; - in_addr lo_if_sin_addr_; - in_addr eth_if_sin_addr_; -}; - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_SYSCALLS_LINUX_SOCKET_IPV4_UDP_UNBOUND_EXTERNAL_NETWORKING_H_ diff --git a/test/syscalls/linux/socket_ipv4_udp_unbound_external_networking_test.cc b/test/syscalls/linux/socket_ipv4_udp_unbound_external_networking_test.cc deleted file mode 100644 index f6e64c157..000000000 --- a/test/syscalls/linux/socket_ipv4_udp_unbound_external_networking_test.cc +++ /dev/null @@ -1,39 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/syscalls/linux/socket_ipv4_udp_unbound_external_networking.h" - -#include <vector> - -#include "test/syscalls/linux/ip_socket_test_util.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -std::vector<SocketKind> GetSockets() { - return ApplyVec<SocketKind>( - IPv4UDPUnboundSocket, - AllBitwiseCombinations(List<int>{0, SOCK_NONBLOCK})); -} - -INSTANTIATE_TEST_SUITE_P(IPv4UDPUnboundSockets, - IPv4UDPUnboundExternalNetworkingSocketTest, - ::testing::ValuesIn(GetSockets())); - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_ipv4_udp_unbound_loopback.cc b/test/syscalls/linux/socket_ipv4_udp_unbound_loopback.cc deleted file mode 100644 index f121c044d..000000000 --- a/test/syscalls/linux/socket_ipv4_udp_unbound_loopback.cc +++ /dev/null @@ -1,32 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <vector> - -#include "test/syscalls/linux/ip_socket_test_util.h" -#include "test/syscalls/linux/socket_ipv4_udp_unbound.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -INSTANTIATE_TEST_SUITE_P( - IPv4UDPSockets, IPv4UDPUnboundSocketTest, - ::testing::ValuesIn(ApplyVec<SocketKind>(IPv4UDPUnboundSocket, - AllBitwiseCombinations(List<int>{ - 0, SOCK_NONBLOCK})))); - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_netdevice.cc b/test/syscalls/linux/socket_netdevice.cc deleted file mode 100644 index 15d4b85a7..000000000 --- a/test/syscalls/linux/socket_netdevice.cc +++ /dev/null @@ -1,184 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <linux/netlink.h> -#include <linux/rtnetlink.h> -#include <linux/sockios.h> -#include <sys/ioctl.h> -#include <sys/socket.h> - -#include "gtest/gtest.h" -#include "absl/base/internal/endian.h" -#include "test/syscalls/linux/socket_netlink_util.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/test_util.h" - -// Tests for netdevice queries. - -namespace gvisor { -namespace testing { - -namespace { - -using ::testing::AnyOf; -using ::testing::Eq; - -TEST(NetdeviceTest, Loopback) { - FileDescriptor sock = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_DGRAM, 0)); - - // Prepare the request. - struct ifreq ifr; - snprintf(ifr.ifr_name, IFNAMSIZ, "lo"); - - // Check for a non-zero interface index. - ASSERT_THAT(ioctl(sock.get(), SIOCGIFINDEX, &ifr), SyscallSucceeds()); - EXPECT_NE(ifr.ifr_ifindex, 0); - - // Check that the loopback is zero hardware address. - ASSERT_THAT(ioctl(sock.get(), SIOCGIFHWADDR, &ifr), SyscallSucceeds()); - EXPECT_EQ(ifr.ifr_hwaddr.sa_data[0], 0); - EXPECT_EQ(ifr.ifr_hwaddr.sa_data[1], 0); - EXPECT_EQ(ifr.ifr_hwaddr.sa_data[2], 0); - EXPECT_EQ(ifr.ifr_hwaddr.sa_data[3], 0); - EXPECT_EQ(ifr.ifr_hwaddr.sa_data[4], 0); - EXPECT_EQ(ifr.ifr_hwaddr.sa_data[5], 0); -} - -TEST(NetdeviceTest, Netmask) { - // We need an interface index to identify the loopback device. - FileDescriptor sock = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_DGRAM, 0)); - struct ifreq ifr; - snprintf(ifr.ifr_name, IFNAMSIZ, "lo"); - ASSERT_THAT(ioctl(sock.get(), SIOCGIFINDEX, &ifr), SyscallSucceeds()); - EXPECT_NE(ifr.ifr_ifindex, 0); - - // Use a netlink socket to get the netmask, which we'll then compare to the - // netmask obtained via ioctl. - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_ROUTE)); - uint32_t port = ASSERT_NO_ERRNO_AND_VALUE(NetlinkPortID(fd.get())); - - struct request { - struct nlmsghdr hdr; - struct rtgenmsg rgm; - }; - - constexpr uint32_t kSeq = 12345; - - struct request req; - req.hdr.nlmsg_len = sizeof(req); - req.hdr.nlmsg_type = RTM_GETADDR; - req.hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP; - req.hdr.nlmsg_seq = kSeq; - req.rgm.rtgen_family = AF_UNSPEC; - - // Iterate through messages until we find the one containing the prefix length - // (i.e. netmask) for the loopback device. - int prefixlen = -1; - ASSERT_NO_ERRNO(NetlinkRequestResponse( - fd, &req, sizeof(req), - [&](const struct nlmsghdr* hdr) { - EXPECT_THAT(hdr->nlmsg_type, AnyOf(Eq(RTM_NEWADDR), Eq(NLMSG_DONE))); - - EXPECT_TRUE((hdr->nlmsg_flags & NLM_F_MULTI) == NLM_F_MULTI) - << std::hex << hdr->nlmsg_flags; - - EXPECT_EQ(hdr->nlmsg_seq, kSeq); - EXPECT_EQ(hdr->nlmsg_pid, port); - - if (hdr->nlmsg_type != RTM_NEWADDR) { - return; - } - - // RTM_NEWADDR contains at least the header and ifaddrmsg. - EXPECT_GE(hdr->nlmsg_len, sizeof(*hdr) + sizeof(struct ifaddrmsg)); - - struct ifaddrmsg* ifaddrmsg = - reinterpret_cast<struct ifaddrmsg*>(NLMSG_DATA(hdr)); - if (ifaddrmsg->ifa_index == static_cast<uint32_t>(ifr.ifr_ifindex) && - ifaddrmsg->ifa_family == AF_INET) { - prefixlen = ifaddrmsg->ifa_prefixlen; - } - }, - false)); - - ASSERT_GE(prefixlen, 0); - - // Netmask is stored big endian in struct sockaddr_in, so we do the same for - // comparison. - uint32_t mask = 0xffffffff << (32 - prefixlen); - mask = absl::gbswap_32(mask); - - // Check that the loopback interface has the correct subnet mask. - snprintf(ifr.ifr_name, IFNAMSIZ, "lo"); - ASSERT_THAT(ioctl(sock.get(), SIOCGIFNETMASK, &ifr), SyscallSucceeds()); - EXPECT_EQ(ifr.ifr_netmask.sa_family, AF_INET); - struct sockaddr_in* sin = - reinterpret_cast<struct sockaddr_in*>(&ifr.ifr_netmask); - EXPECT_EQ(sin->sin_addr.s_addr, mask); -} - -TEST(NetdeviceTest, InterfaceName) { - FileDescriptor sock = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_DGRAM, 0)); - - // Prepare the request. - struct ifreq ifr; - snprintf(ifr.ifr_name, IFNAMSIZ, "lo"); - - // Check for a non-zero interface index. - ASSERT_THAT(ioctl(sock.get(), SIOCGIFINDEX, &ifr), SyscallSucceeds()); - EXPECT_NE(ifr.ifr_ifindex, 0); - - // Check that SIOCGIFNAME finds the loopback interface. - snprintf(ifr.ifr_name, IFNAMSIZ, "foo"); - ASSERT_THAT(ioctl(sock.get(), SIOCGIFNAME, &ifr), SyscallSucceeds()); - EXPECT_STREQ(ifr.ifr_name, "lo"); -} - -TEST(NetdeviceTest, InterfaceFlags) { - FileDescriptor sock = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_DGRAM, 0)); - - // Prepare the request. - struct ifreq ifr; - snprintf(ifr.ifr_name, IFNAMSIZ, "lo"); - - // Check that SIOCGIFFLAGS marks the interface with IFF_LOOPBACK, IFF_UP, and - // IFF_RUNNING. - ASSERT_THAT(ioctl(sock.get(), SIOCGIFFLAGS, &ifr), SyscallSucceeds()); - EXPECT_EQ(ifr.ifr_flags & IFF_UP, IFF_UP); - EXPECT_EQ(ifr.ifr_flags & IFF_RUNNING, IFF_RUNNING); -} - -TEST(NetdeviceTest, InterfaceMTU) { - FileDescriptor sock = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_INET, SOCK_DGRAM, 0)); - - // Prepare the request. - struct ifreq ifr = {}; - snprintf(ifr.ifr_name, IFNAMSIZ, "lo"); - - // Check that SIOCGIFMTU returns a nonzero MTU. - ASSERT_THAT(ioctl(sock.get(), SIOCGIFMTU, &ifr), SyscallSucceeds()); - EXPECT_GT(ifr.ifr_mtu, 0); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_netlink.cc b/test/syscalls/linux/socket_netlink.cc deleted file mode 100644 index 4ec0fd4fa..000000000 --- a/test/syscalls/linux/socket_netlink.cc +++ /dev/null @@ -1,153 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <linux/netlink.h> -#include <sys/socket.h> -#include <sys/types.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/test_util.h" - -// Tests for all netlink socket protocols. - -namespace gvisor { -namespace testing { - -namespace { - -// NetlinkTest parameter is the protocol to test. -using NetlinkTest = ::testing::TestWithParam<int>; - -// Netlink sockets must be SOCK_DGRAM or SOCK_RAW. -TEST_P(NetlinkTest, Types) { - const int protocol = GetParam(); - - EXPECT_THAT(socket(AF_NETLINK, SOCK_STREAM, protocol), - SyscallFailsWithErrno(ESOCKTNOSUPPORT)); - EXPECT_THAT(socket(AF_NETLINK, SOCK_SEQPACKET, protocol), - SyscallFailsWithErrno(ESOCKTNOSUPPORT)); - EXPECT_THAT(socket(AF_NETLINK, SOCK_RDM, protocol), - SyscallFailsWithErrno(ESOCKTNOSUPPORT)); - EXPECT_THAT(socket(AF_NETLINK, SOCK_DCCP, protocol), - SyscallFailsWithErrno(ESOCKTNOSUPPORT)); - EXPECT_THAT(socket(AF_NETLINK, SOCK_PACKET, protocol), - SyscallFailsWithErrno(ESOCKTNOSUPPORT)); - - int fd; - EXPECT_THAT(fd = socket(AF_NETLINK, SOCK_DGRAM, protocol), SyscallSucceeds()); - EXPECT_THAT(close(fd), SyscallSucceeds()); - - EXPECT_THAT(fd = socket(AF_NETLINK, SOCK_RAW, protocol), SyscallSucceeds()); - EXPECT_THAT(close(fd), SyscallSucceeds()); -} - -TEST_P(NetlinkTest, AutomaticPort) { - const int protocol = GetParam(); - - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_NETLINK, SOCK_RAW, protocol)); - - struct sockaddr_nl addr = {}; - addr.nl_family = AF_NETLINK; - - EXPECT_THAT( - bind(fd.get(), reinterpret_cast<struct sockaddr*>(&addr), sizeof(addr)), - SyscallSucceeds()); - - socklen_t addrlen = sizeof(addr); - EXPECT_THAT(getsockname(fd.get(), reinterpret_cast<struct sockaddr*>(&addr), - &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, sizeof(addr)); - // This is the only netlink socket in the process, so it should get the PID as - // the port id. - // - // N.B. Another process could theoretically have explicitly reserved our pid - // as a port ID, but that is very unlikely. - EXPECT_EQ(addr.nl_pid, getpid()); -} - -// Calling connect automatically binds to an automatic port. -TEST_P(NetlinkTest, ConnectBinds) { - const int protocol = GetParam(); - - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_NETLINK, SOCK_RAW, protocol)); - - struct sockaddr_nl addr = {}; - addr.nl_family = AF_NETLINK; - - EXPECT_THAT(connect(fd.get(), reinterpret_cast<struct sockaddr*>(&addr), - sizeof(addr)), - SyscallSucceeds()); - - socklen_t addrlen = sizeof(addr); - EXPECT_THAT(getsockname(fd.get(), reinterpret_cast<struct sockaddr*>(&addr), - &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, sizeof(addr)); - - // Each test is running in a pid namespace, so another process can explicitly - // reserve our pid as a port ID. In this case, a negative portid value will be - // set. - if (static_cast<pid_t>(addr.nl_pid) > 0) { - EXPECT_EQ(addr.nl_pid, getpid()); - } - - memset(&addr, 0, sizeof(addr)); - addr.nl_family = AF_NETLINK; - - // Connecting again is allowed, but keeps the same port. - EXPECT_THAT(connect(fd.get(), reinterpret_cast<struct sockaddr*>(&addr), - sizeof(addr)), - SyscallSucceeds()); - - addrlen = sizeof(addr); - EXPECT_THAT(getsockname(fd.get(), reinterpret_cast<struct sockaddr*>(&addr), - &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, sizeof(addr)); - EXPECT_EQ(addr.nl_pid, getpid()); -} - -TEST_P(NetlinkTest, GetPeerName) { - const int protocol = GetParam(); - - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_NETLINK, SOCK_RAW, protocol)); - - struct sockaddr_nl addr = {}; - socklen_t addrlen = sizeof(addr); - - EXPECT_THAT(getpeername(fd.get(), reinterpret_cast<struct sockaddr*>(&addr), - &addrlen), - SyscallSucceeds()); - - EXPECT_EQ(addrlen, sizeof(addr)); - EXPECT_EQ(addr.nl_family, AF_NETLINK); - // Peer is the kernel if we didn't connect elsewhere. - EXPECT_EQ(addr.nl_pid, 0); -} - -INSTANTIATE_TEST_SUITE_P(ProtocolTest, NetlinkTest, - ::testing::Values(NETLINK_ROUTE, - NETLINK_KOBJECT_UEVENT)); - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_netlink_route.cc b/test/syscalls/linux/socket_netlink_route.cc deleted file mode 100644 index e5aed1eec..000000000 --- a/test/syscalls/linux/socket_netlink_route.cc +++ /dev/null @@ -1,990 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <arpa/inet.h> -#include <ifaddrs.h> -#include <linux/if.h> -#include <linux/netlink.h> -#include <linux/rtnetlink.h> -#include <sys/socket.h> -#include <sys/types.h> -#include <unistd.h> - -#include <iostream> -#include <vector> - -#include "gtest/gtest.h" -#include "absl/strings/str_format.h" -#include "absl/types/optional.h" -#include "test/syscalls/linux/socket_netlink_util.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/util/capability_util.h" -#include "test/util/cleanup.h" -#include "test/util/file_descriptor.h" -#include "test/util/test_util.h" - -// Tests for NETLINK_ROUTE sockets. - -namespace gvisor { -namespace testing { - -namespace { - -constexpr uint32_t kSeq = 12345; - -using ::testing::AnyOf; -using ::testing::Eq; - -// Parameters for SockOptTest. They are: -// 0: Socket option to query. -// 1: A predicate to run on the returned sockopt value. Should return true if -// the value is considered ok. -// 2: A description of what the sockopt value is expected to be. Should complete -// the sentence "<value> was unexpected, expected <description>" -using SockOptTest = ::testing::TestWithParam< - std::tuple<int, std::function<bool(int)>, std::string>>; - -TEST_P(SockOptTest, GetSockOpt) { - int sockopt = std::get<0>(GetParam()); - auto verifier = std::get<1>(GetParam()); - std::string verifier_description = std::get<2>(GetParam()); - - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE)); - - int res; - socklen_t len = sizeof(res); - - EXPECT_THAT(getsockopt(fd.get(), SOL_SOCKET, sockopt, &res, &len), - SyscallSucceeds()); - - EXPECT_EQ(len, sizeof(res)); - EXPECT_TRUE(verifier(res)) << absl::StrFormat( - "getsockopt(%d, SOL_SOCKET, %d, &res, &len) => res=%d was unexpected, " - "expected %s", - fd.get(), sockopt, res, verifier_description); -} - -std::function<bool(int)> IsPositive() { - return [](int val) { return val > 0; }; -} - -std::function<bool(int)> IsEqual(int target) { - return [target](int val) { return val == target; }; -} - -INSTANTIATE_TEST_SUITE_P( - NetlinkRouteTest, SockOptTest, - ::testing::Values( - std::make_tuple(SO_SNDBUF, IsPositive(), "positive send buffer size"), - std::make_tuple(SO_RCVBUF, IsPositive(), - "positive receive buffer size"), - std::make_tuple(SO_TYPE, IsEqual(SOCK_RAW), - absl::StrFormat("SOCK_RAW (%d)", SOCK_RAW)), - std::make_tuple(SO_DOMAIN, IsEqual(AF_NETLINK), - absl::StrFormat("AF_NETLINK (%d)", AF_NETLINK)), - std::make_tuple(SO_PROTOCOL, IsEqual(NETLINK_ROUTE), - absl::StrFormat("NETLINK_ROUTE (%d)", NETLINK_ROUTE)), - std::make_tuple(SO_PASSCRED, IsEqual(0), "0"))); - -// Validates the reponses to RTM_GETLINK + NLM_F_DUMP. -void CheckGetLinkResponse(const struct nlmsghdr* hdr, int seq, int port) { - EXPECT_THAT(hdr->nlmsg_type, AnyOf(Eq(RTM_NEWLINK), Eq(NLMSG_DONE))); - - EXPECT_TRUE((hdr->nlmsg_flags & NLM_F_MULTI) == NLM_F_MULTI) - << std::hex << hdr->nlmsg_flags; - - EXPECT_EQ(hdr->nlmsg_seq, seq); - EXPECT_EQ(hdr->nlmsg_pid, port); - - if (hdr->nlmsg_type != RTM_NEWLINK) { - return; - } - - // RTM_NEWLINK contains at least the header and ifinfomsg. - EXPECT_GE(hdr->nlmsg_len, NLMSG_SPACE(sizeof(struct ifinfomsg))); - - // TODO(mpratt): Check ifinfomsg contents and following attrs. -} - -PosixError DumpLinks( - const FileDescriptor& fd, uint32_t seq, - const std::function<void(const struct nlmsghdr* hdr)>& fn) { - struct request { - struct nlmsghdr hdr; - struct ifinfomsg ifm; - }; - - struct request req = {}; - req.hdr.nlmsg_len = sizeof(req); - req.hdr.nlmsg_type = RTM_GETLINK; - req.hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP; - req.hdr.nlmsg_seq = seq; - req.ifm.ifi_family = AF_UNSPEC; - - return NetlinkRequestResponse(fd, &req, sizeof(req), fn, false); -} - -TEST(NetlinkRouteTest, GetLinkDump) { - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_ROUTE)); - uint32_t port = ASSERT_NO_ERRNO_AND_VALUE(NetlinkPortID(fd.get())); - - // Loopback is common among all tests, check that it's found. - bool loopbackFound = false; - ASSERT_NO_ERRNO(DumpLinks(fd, kSeq, [&](const struct nlmsghdr* hdr) { - CheckGetLinkResponse(hdr, kSeq, port); - if (hdr->nlmsg_type != RTM_NEWLINK) { - return; - } - ASSERT_GE(hdr->nlmsg_len, NLMSG_SPACE(sizeof(struct ifinfomsg))); - const struct ifinfomsg* msg = - reinterpret_cast<const struct ifinfomsg*>(NLMSG_DATA(hdr)); - std::cout << "Found interface idx=" << msg->ifi_index - << ", type=" << std::hex << msg->ifi_type; - if (msg->ifi_type == ARPHRD_LOOPBACK) { - loopbackFound = true; - EXPECT_NE(msg->ifi_flags & IFF_LOOPBACK, 0); - } - })); - EXPECT_TRUE(loopbackFound); -} - -struct Link { - int index; - std::string name; -}; - -PosixErrorOr<absl::optional<Link>> FindLoopbackLink() { - ASSIGN_OR_RETURN_ERRNO(FileDescriptor fd, NetlinkBoundSocket(NETLINK_ROUTE)); - - absl::optional<Link> link; - RETURN_IF_ERRNO(DumpLinks(fd, kSeq, [&](const struct nlmsghdr* hdr) { - if (hdr->nlmsg_type != RTM_NEWLINK || - hdr->nlmsg_len < NLMSG_SPACE(sizeof(struct ifinfomsg))) { - return; - } - const struct ifinfomsg* msg = - reinterpret_cast<const struct ifinfomsg*>(NLMSG_DATA(hdr)); - if (msg->ifi_type == ARPHRD_LOOPBACK) { - const auto* rta = FindRtAttr(hdr, msg, IFLA_IFNAME); - if (rta == nullptr) { - // Ignore links that do not have a name. - return; - } - - link = Link(); - link->index = msg->ifi_index; - link->name = std::string(reinterpret_cast<const char*>(RTA_DATA(rta))); - } - })); - return link; -} - -// CheckLinkMsg checks a netlink message against an expected link. -void CheckLinkMsg(const struct nlmsghdr* hdr, const Link& link) { - ASSERT_THAT(hdr->nlmsg_type, Eq(RTM_NEWLINK)); - ASSERT_GE(hdr->nlmsg_len, NLMSG_SPACE(sizeof(struct ifinfomsg))); - const struct ifinfomsg* msg = - reinterpret_cast<const struct ifinfomsg*>(NLMSG_DATA(hdr)); - EXPECT_EQ(msg->ifi_index, link.index); - - const struct rtattr* rta = FindRtAttr(hdr, msg, IFLA_IFNAME); - EXPECT_NE(nullptr, rta) << "IFLA_IFNAME not found in message."; - if (rta != nullptr) { - std::string name(reinterpret_cast<const char*>(RTA_DATA(rta))); - EXPECT_EQ(name, link.name); - } -} - -TEST(NetlinkRouteTest, GetLinkByIndex) { - absl::optional<Link> loopback_link = - ASSERT_NO_ERRNO_AND_VALUE(FindLoopbackLink()); - ASSERT_TRUE(loopback_link.has_value()); - - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_ROUTE)); - - struct request { - struct nlmsghdr hdr; - struct ifinfomsg ifm; - }; - - struct request req = {}; - req.hdr.nlmsg_len = sizeof(req); - req.hdr.nlmsg_type = RTM_GETLINK; - req.hdr.nlmsg_flags = NLM_F_REQUEST; - req.hdr.nlmsg_seq = kSeq; - req.ifm.ifi_family = AF_UNSPEC; - req.ifm.ifi_index = loopback_link->index; - - bool found = false; - ASSERT_NO_ERRNO(NetlinkRequestResponse( - fd, &req, sizeof(req), - [&](const struct nlmsghdr* hdr) { - CheckLinkMsg(hdr, *loopback_link); - found = true; - }, - false)); - EXPECT_TRUE(found) << "Netlink response does not contain any links."; -} - -TEST(NetlinkRouteTest, GetLinkByName) { - absl::optional<Link> loopback_link = - ASSERT_NO_ERRNO_AND_VALUE(FindLoopbackLink()); - ASSERT_TRUE(loopback_link.has_value()); - - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_ROUTE)); - - struct request { - struct nlmsghdr hdr; - struct ifinfomsg ifm; - struct rtattr rtattr; - char ifname[IFNAMSIZ]; - char pad[NLMSG_ALIGNTO + RTA_ALIGNTO]; - }; - - struct request req = {}; - req.hdr.nlmsg_type = RTM_GETLINK; - req.hdr.nlmsg_flags = NLM_F_REQUEST; - req.hdr.nlmsg_seq = kSeq; - req.ifm.ifi_family = AF_UNSPEC; - req.rtattr.rta_type = IFLA_IFNAME; - req.rtattr.rta_len = RTA_LENGTH(loopback_link->name.size() + 1); - strncpy(req.ifname, loopback_link->name.c_str(), sizeof(req.ifname)); - req.hdr.nlmsg_len = - NLMSG_LENGTH(sizeof(req.ifm)) + NLMSG_ALIGN(req.rtattr.rta_len); - - bool found = false; - ASSERT_NO_ERRNO(NetlinkRequestResponse( - fd, &req, sizeof(req), - [&](const struct nlmsghdr* hdr) { - CheckLinkMsg(hdr, *loopback_link); - found = true; - }, - false)); - EXPECT_TRUE(found) << "Netlink response does not contain any links."; -} - -TEST(NetlinkRouteTest, GetLinkByIndexNotFound) { - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_ROUTE)); - - struct request { - struct nlmsghdr hdr; - struct ifinfomsg ifm; - }; - - struct request req = {}; - req.hdr.nlmsg_len = sizeof(req); - req.hdr.nlmsg_type = RTM_GETLINK; - req.hdr.nlmsg_flags = NLM_F_REQUEST; - req.hdr.nlmsg_seq = kSeq; - req.ifm.ifi_family = AF_UNSPEC; - req.ifm.ifi_index = 1234590; - - EXPECT_THAT(NetlinkRequestAckOrError(fd, kSeq, &req, sizeof(req)), - PosixErrorIs(ENODEV, ::testing::_)); -} - -TEST(NetlinkRouteTest, GetLinkByNameNotFound) { - const std::string name = "nodevice?!"; - - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_ROUTE)); - - struct request { - struct nlmsghdr hdr; - struct ifinfomsg ifm; - struct rtattr rtattr; - char ifname[IFNAMSIZ]; - char pad[NLMSG_ALIGNTO + RTA_ALIGNTO]; - }; - - struct request req = {}; - req.hdr.nlmsg_type = RTM_GETLINK; - req.hdr.nlmsg_flags = NLM_F_REQUEST; - req.hdr.nlmsg_seq = kSeq; - req.ifm.ifi_family = AF_UNSPEC; - req.rtattr.rta_type = IFLA_IFNAME; - req.rtattr.rta_len = RTA_LENGTH(name.size() + 1); - strncpy(req.ifname, name.c_str(), sizeof(req.ifname)); - req.hdr.nlmsg_len = - NLMSG_LENGTH(sizeof(req.ifm)) + NLMSG_ALIGN(req.rtattr.rta_len); - - EXPECT_THAT(NetlinkRequestAckOrError(fd, kSeq, &req, sizeof(req)), - PosixErrorIs(ENODEV, ::testing::_)); -} - -TEST(NetlinkRouteTest, MsgHdrMsgUnsuppType) { - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_ROUTE)); - - struct request { - struct nlmsghdr hdr; - struct ifinfomsg ifm; - }; - - struct request req = {}; - req.hdr.nlmsg_len = sizeof(req); - // If type & 0x3 is equal to 0x2, this means a get request - // which doesn't require CAP_SYS_ADMIN. - req.hdr.nlmsg_type = ((__RTM_MAX + 1024) & (~0x3)) | 0x2; - req.hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP; - req.hdr.nlmsg_seq = kSeq; - req.ifm.ifi_family = AF_UNSPEC; - - EXPECT_THAT(NetlinkRequestAckOrError(fd, kSeq, &req, sizeof(req)), - PosixErrorIs(EOPNOTSUPP, ::testing::_)); -} - -TEST(NetlinkRouteTest, MsgHdrMsgTrunc) { - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_ROUTE)); - - struct request { - struct nlmsghdr hdr; - struct ifinfomsg ifm; - }; - - struct request req = {}; - req.hdr.nlmsg_len = sizeof(req); - req.hdr.nlmsg_type = RTM_GETLINK; - req.hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP; - req.hdr.nlmsg_seq = kSeq; - req.ifm.ifi_family = AF_UNSPEC; - - struct iovec iov = {}; - iov.iov_base = &req; - iov.iov_len = sizeof(req); - - struct msghdr msg = {}; - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - // No destination required; it defaults to pid 0, the kernel. - - ASSERT_THAT(RetryEINTR(sendmsg)(fd.get(), &msg, 0), SyscallSucceeds()); - - // Small enough to ensure that the response doesn't fit. - constexpr size_t kBufferSize = 10; - std::vector<char> buf(kBufferSize); - iov.iov_base = buf.data(); - iov.iov_len = buf.size(); - - ASSERT_THAT(RetryEINTR(recvmsg)(fd.get(), &msg, 0), - SyscallSucceedsWithValue(kBufferSize)); - EXPECT_EQ((msg.msg_flags & MSG_TRUNC), MSG_TRUNC); -} - -TEST(NetlinkRouteTest, MsgTruncMsgHdrMsgTrunc) { - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_ROUTE)); - - struct request { - struct nlmsghdr hdr; - struct ifinfomsg ifm; - }; - - struct request req = {}; - req.hdr.nlmsg_len = sizeof(req); - req.hdr.nlmsg_type = RTM_GETLINK; - req.hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP; - req.hdr.nlmsg_seq = kSeq; - req.ifm.ifi_family = AF_UNSPEC; - - struct iovec iov = {}; - iov.iov_base = &req; - iov.iov_len = sizeof(req); - - struct msghdr msg = {}; - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - // No destination required; it defaults to pid 0, the kernel. - - ASSERT_THAT(RetryEINTR(sendmsg)(fd.get(), &msg, 0), SyscallSucceeds()); - - // Small enough to ensure that the response doesn't fit. - constexpr size_t kBufferSize = 10; - std::vector<char> buf(kBufferSize); - iov.iov_base = buf.data(); - iov.iov_len = buf.size(); - - int res = 0; - ASSERT_THAT(res = RetryEINTR(recvmsg)(fd.get(), &msg, MSG_TRUNC), - SyscallSucceeds()); - EXPECT_GT(res, kBufferSize); - EXPECT_EQ((msg.msg_flags & MSG_TRUNC), MSG_TRUNC); -} - -TEST(NetlinkRouteTest, ControlMessageIgnored) { - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_ROUTE)); - uint32_t port = ASSERT_NO_ERRNO_AND_VALUE(NetlinkPortID(fd.get())); - - struct request { - struct nlmsghdr control_hdr; - struct nlmsghdr message_hdr; - struct ifinfomsg ifm; - }; - - struct request req = {}; - - // This control message is ignored. We still receive a response for the - // following RTM_GETLINK. - req.control_hdr.nlmsg_len = sizeof(req.control_hdr); - req.control_hdr.nlmsg_type = NLMSG_DONE; - req.control_hdr.nlmsg_seq = kSeq; - - req.message_hdr.nlmsg_len = sizeof(req.message_hdr) + sizeof(req.ifm); - req.message_hdr.nlmsg_type = RTM_GETLINK; - req.message_hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP; - req.message_hdr.nlmsg_seq = kSeq; - - req.ifm.ifi_family = AF_UNSPEC; - - ASSERT_NO_ERRNO(NetlinkRequestResponse( - fd, &req, sizeof(req), - [&](const struct nlmsghdr* hdr) { - CheckGetLinkResponse(hdr, kSeq, port); - }, - false)); -} - -TEST(NetlinkRouteTest, GetAddrDump) { - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_ROUTE)); - uint32_t port = ASSERT_NO_ERRNO_AND_VALUE(NetlinkPortID(fd.get())); - - struct request { - struct nlmsghdr hdr; - struct rtgenmsg rgm; - }; - - struct request req; - req.hdr.nlmsg_len = sizeof(req); - req.hdr.nlmsg_type = RTM_GETADDR; - req.hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP; - req.hdr.nlmsg_seq = kSeq; - req.rgm.rtgen_family = AF_UNSPEC; - - ASSERT_NO_ERRNO(NetlinkRequestResponse( - fd, &req, sizeof(req), - [&](const struct nlmsghdr* hdr) { - EXPECT_THAT(hdr->nlmsg_type, AnyOf(Eq(RTM_NEWADDR), Eq(NLMSG_DONE))); - - EXPECT_TRUE((hdr->nlmsg_flags & NLM_F_MULTI) == NLM_F_MULTI) - << std::hex << hdr->nlmsg_flags; - - EXPECT_EQ(hdr->nlmsg_seq, kSeq); - EXPECT_EQ(hdr->nlmsg_pid, port); - - if (hdr->nlmsg_type != RTM_NEWADDR) { - return; - } - - // RTM_NEWADDR contains at least the header and ifaddrmsg. - EXPECT_GE(hdr->nlmsg_len, sizeof(*hdr) + sizeof(struct ifaddrmsg)); - - // TODO(mpratt): Check ifaddrmsg contents and following attrs. - }, - false)); -} - -TEST(NetlinkRouteTest, LookupAll) { - struct ifaddrs* if_addr_list = nullptr; - auto cleanup = Cleanup([&if_addr_list]() { freeifaddrs(if_addr_list); }); - - // Not a syscall but we can use the syscall matcher as glibc sets errno. - ASSERT_THAT(getifaddrs(&if_addr_list), SyscallSucceeds()); - - int count = 0; - for (struct ifaddrs* i = if_addr_list; i; i = i->ifa_next) { - if (!i->ifa_addr || (i->ifa_addr->sa_family != AF_INET && - i->ifa_addr->sa_family != AF_INET6)) { - continue; - } - count++; - } - ASSERT_GT(count, 0); -} - -TEST(NetlinkRouteTest, AddAddr) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_NET_ADMIN))); - - absl::optional<Link> loopback_link = - ASSERT_NO_ERRNO_AND_VALUE(FindLoopbackLink()); - ASSERT_TRUE(loopback_link.has_value()); - - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_ROUTE)); - - struct request { - struct nlmsghdr hdr; - struct ifaddrmsg ifa; - struct rtattr rtattr; - struct in_addr addr; - char pad[NLMSG_ALIGNTO + RTA_ALIGNTO]; - }; - - struct request req = {}; - req.hdr.nlmsg_type = RTM_NEWADDR; - req.hdr.nlmsg_seq = kSeq; - req.ifa.ifa_family = AF_INET; - req.ifa.ifa_prefixlen = 24; - req.ifa.ifa_flags = 0; - req.ifa.ifa_scope = 0; - req.ifa.ifa_index = loopback_link->index; - req.rtattr.rta_type = IFA_LOCAL; - req.rtattr.rta_len = RTA_LENGTH(sizeof(req.addr)); - inet_pton(AF_INET, "10.0.0.1", &req.addr); - req.hdr.nlmsg_len = - NLMSG_LENGTH(sizeof(req.ifa)) + NLMSG_ALIGN(req.rtattr.rta_len); - - // Create should succeed, as no such address in kernel. - req.hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_ACK; - EXPECT_NO_ERRNO( - NetlinkRequestAckOrError(fd, req.hdr.nlmsg_seq, &req, req.hdr.nlmsg_len)); - - // Replace an existing address should succeed. - req.hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_REPLACE | NLM_F_ACK; - req.hdr.nlmsg_seq++; - EXPECT_NO_ERRNO( - NetlinkRequestAckOrError(fd, req.hdr.nlmsg_seq, &req, req.hdr.nlmsg_len)); - - // Create exclusive should fail, as we created the address above. - req.hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_CREATE | NLM_F_EXCL | NLM_F_ACK; - req.hdr.nlmsg_seq++; - EXPECT_THAT( - NetlinkRequestAckOrError(fd, req.hdr.nlmsg_seq, &req, req.hdr.nlmsg_len), - PosixErrorIs(EEXIST, ::testing::_)); -} - -// GetRouteDump tests a RTM_GETROUTE + NLM_F_DUMP request. -TEST(NetlinkRouteTest, GetRouteDump) { - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_ROUTE)); - uint32_t port = ASSERT_NO_ERRNO_AND_VALUE(NetlinkPortID(fd.get())); - - struct request { - struct nlmsghdr hdr; - struct rtmsg rtm; - }; - - struct request req = {}; - req.hdr.nlmsg_len = sizeof(req); - req.hdr.nlmsg_type = RTM_GETROUTE; - req.hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP; - req.hdr.nlmsg_seq = kSeq; - req.rtm.rtm_family = AF_UNSPEC; - - bool routeFound = false; - bool dstFound = true; - ASSERT_NO_ERRNO(NetlinkRequestResponse( - fd, &req, sizeof(req), - [&](const struct nlmsghdr* hdr) { - // Validate the reponse to RTM_GETROUTE + NLM_F_DUMP. - EXPECT_THAT(hdr->nlmsg_type, AnyOf(Eq(RTM_NEWROUTE), Eq(NLMSG_DONE))); - - EXPECT_TRUE((hdr->nlmsg_flags & NLM_F_MULTI) == NLM_F_MULTI) - << std::hex << hdr->nlmsg_flags; - - EXPECT_EQ(hdr->nlmsg_seq, kSeq); - EXPECT_EQ(hdr->nlmsg_pid, port); - - // The test should not proceed if it's not a RTM_NEWROUTE message. - if (hdr->nlmsg_type != RTM_NEWROUTE) { - return; - } - - // RTM_NEWROUTE contains at least the header and rtmsg. - ASSERT_GE(hdr->nlmsg_len, NLMSG_SPACE(sizeof(struct rtmsg))); - const struct rtmsg* msg = - reinterpret_cast<const struct rtmsg*>(NLMSG_DATA(hdr)); - // NOTE: rtmsg fields are char fields. - std::cout << "Found route table=" << static_cast<int>(msg->rtm_table) - << ", protocol=" << static_cast<int>(msg->rtm_protocol) - << ", scope=" << static_cast<int>(msg->rtm_scope) - << ", type=" << static_cast<int>(msg->rtm_type); - - int len = RTM_PAYLOAD(hdr); - bool rtDstFound = false; - for (struct rtattr* attr = RTM_RTA(msg); RTA_OK(attr, len); - attr = RTA_NEXT(attr, len)) { - if (attr->rta_type == RTA_DST) { - char address[INET_ADDRSTRLEN] = {}; - inet_ntop(AF_INET, RTA_DATA(attr), address, sizeof(address)); - std::cout << ", dst=" << address; - rtDstFound = true; - } - } - - std::cout << std::endl; - - if (msg->rtm_table == RT_TABLE_MAIN) { - routeFound = true; - dstFound = rtDstFound && dstFound; - } - }, - false)); - // At least one route found in main route table. - EXPECT_TRUE(routeFound); - // Found RTA_DST for each route in main table. - EXPECT_TRUE(dstFound); -} - -// GetRouteRequest tests a RTM_GETROUTE request with RTM_F_LOOKUP_TABLE flag. -TEST(NetlinkRouteTest, GetRouteRequest) { - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_ROUTE)); - uint32_t port = ASSERT_NO_ERRNO_AND_VALUE(NetlinkPortID(fd.get())); - - struct __attribute__((__packed__)) request { - struct nlmsghdr hdr; - struct rtmsg rtm; - struct nlattr nla; - struct in_addr sin_addr; - }; - - constexpr uint32_t kSeq = 12345; - - struct request req = {}; - req.hdr.nlmsg_len = sizeof(req); - req.hdr.nlmsg_type = RTM_GETROUTE; - req.hdr.nlmsg_flags = NLM_F_REQUEST; - req.hdr.nlmsg_seq = kSeq; - - req.rtm.rtm_family = AF_INET; - req.rtm.rtm_dst_len = 32; - req.rtm.rtm_src_len = 0; - req.rtm.rtm_tos = 0; - req.rtm.rtm_table = RT_TABLE_UNSPEC; - req.rtm.rtm_protocol = RTPROT_UNSPEC; - req.rtm.rtm_scope = RT_SCOPE_UNIVERSE; - req.rtm.rtm_type = RTN_UNSPEC; - req.rtm.rtm_flags = RTM_F_LOOKUP_TABLE; - - req.nla.nla_len = 8; - req.nla.nla_type = RTA_DST; - inet_aton("127.0.0.2", &req.sin_addr); - - bool rtDstFound = false; - ASSERT_NO_ERRNO(NetlinkRequestResponseSingle( - fd, &req, sizeof(req), [&](const struct nlmsghdr* hdr) { - // Validate the reponse to RTM_GETROUTE request with RTM_F_LOOKUP_TABLE - // flag. - EXPECT_THAT(hdr->nlmsg_type, RTM_NEWROUTE); - - EXPECT_TRUE(hdr->nlmsg_flags == 0) << std::hex << hdr->nlmsg_flags; - - EXPECT_EQ(hdr->nlmsg_seq, kSeq); - EXPECT_EQ(hdr->nlmsg_pid, port); - - // RTM_NEWROUTE contains at least the header and rtmsg. - ASSERT_GE(hdr->nlmsg_len, NLMSG_SPACE(sizeof(struct rtmsg))); - const struct rtmsg* msg = - reinterpret_cast<const struct rtmsg*>(NLMSG_DATA(hdr)); - - // NOTE: rtmsg fields are char fields. - std::cout << "Found route table=" << static_cast<int>(msg->rtm_table) - << ", protocol=" << static_cast<int>(msg->rtm_protocol) - << ", scope=" << static_cast<int>(msg->rtm_scope) - << ", type=" << static_cast<int>(msg->rtm_type); - - EXPECT_EQ(msg->rtm_family, AF_INET); - EXPECT_EQ(msg->rtm_dst_len, 32); - EXPECT_TRUE((msg->rtm_flags & RTM_F_CLONED) == RTM_F_CLONED) - << std::hex << msg->rtm_flags; - - int len = RTM_PAYLOAD(hdr); - std::cout << ", len=" << len; - for (struct rtattr* attr = RTM_RTA(msg); RTA_OK(attr, len); - attr = RTA_NEXT(attr, len)) { - if (attr->rta_type == RTA_DST) { - char address[INET_ADDRSTRLEN] = {}; - inet_ntop(AF_INET, RTA_DATA(attr), address, sizeof(address)); - std::cout << ", dst=" << address; - rtDstFound = true; - } else if (attr->rta_type == RTA_OIF) { - const char* oif = reinterpret_cast<const char*>(RTA_DATA(attr)); - std::cout << ", oif=" << oif; - } - } - - std::cout << std::endl; - })); - // Found RTA_DST for RTM_F_LOOKUP_TABLE. - EXPECT_TRUE(rtDstFound); -} - -// RecvmsgTrunc tests the recvmsg MSG_TRUNC flag with zero length output -// buffer. MSG_TRUNC with a zero length buffer should consume subsequent -// messages off the socket. -TEST(NetlinkRouteTest, RecvmsgTrunc) { - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_ROUTE)); - - struct request { - struct nlmsghdr hdr; - struct rtgenmsg rgm; - }; - - struct request req; - req.hdr.nlmsg_len = sizeof(req); - req.hdr.nlmsg_type = RTM_GETADDR; - req.hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP; - req.hdr.nlmsg_seq = kSeq; - req.rgm.rtgen_family = AF_UNSPEC; - - struct iovec iov = {}; - iov.iov_base = &req; - iov.iov_len = sizeof(req); - - struct msghdr msg = {}; - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - ASSERT_THAT(RetryEINTR(sendmsg)(fd.get(), &msg, 0), SyscallSucceeds()); - - iov.iov_base = NULL; - iov.iov_len = 0; - - int trunclen, trunclen2; - - // Note: This test assumes at least two messages are returned by the - // RTM_GETADDR request. That means at least one RTM_NEWLINK message and one - // NLMSG_DONE message. We cannot read all the messages without blocking - // because we would need to read the message into a buffer and check the - // nlmsg_type for NLMSG_DONE. However, the test depends on reading into a - // zero-length buffer. - - // First, call recvmsg with MSG_TRUNC. This will read the full message from - // the socket and return it's full length. Subsequent calls to recvmsg will - // read the next messages from the socket. - ASSERT_THAT(trunclen = RetryEINTR(recvmsg)(fd.get(), &msg, MSG_TRUNC), - SyscallSucceeds()); - - // Message should always be truncated. However, While the destination iov is - // zero length, MSG_TRUNC returns the size of the next message so it should - // not be zero. - ASSERT_EQ(msg.msg_flags & MSG_TRUNC, MSG_TRUNC); - ASSERT_NE(trunclen, 0); - // Returned length is at least the header and ifaddrmsg. - EXPECT_GE(trunclen, sizeof(struct nlmsghdr) + sizeof(struct ifaddrmsg)); - - // Reset the msg_flags to make sure that the recvmsg call is setting them - // properly. - msg.msg_flags = 0; - - // Make a second recvvmsg call to get the next message. - ASSERT_THAT(trunclen2 = RetryEINTR(recvmsg)(fd.get(), &msg, MSG_TRUNC), - SyscallSucceeds()); - ASSERT_EQ(msg.msg_flags & MSG_TRUNC, MSG_TRUNC); - ASSERT_NE(trunclen2, 0); - - // Assert that the received messages are not the same. - // - // We are calling recvmsg with a zero length buffer so we have no way to - // inspect the messages to make sure they are not equal in value. The best - // we can do is to compare their lengths. - ASSERT_NE(trunclen, trunclen2); -} - -// RecvmsgTruncPeek tests recvmsg with the combination of the MSG_TRUNC and -// MSG_PEEK flags and a zero length output buffer. This is normally used to -// read the full length of the next message on the socket without consuming -// it, so a properly sized buffer can be allocated to store the message. This -// test tests that scenario. -TEST(NetlinkRouteTest, RecvmsgTruncPeek) { - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_ROUTE)); - - struct request { - struct nlmsghdr hdr; - struct rtgenmsg rgm; - }; - - struct request req; - req.hdr.nlmsg_len = sizeof(req); - req.hdr.nlmsg_type = RTM_GETADDR; - req.hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP; - req.hdr.nlmsg_seq = kSeq; - req.rgm.rtgen_family = AF_UNSPEC; - - struct iovec iov = {}; - iov.iov_base = &req; - iov.iov_len = sizeof(req); - - struct msghdr msg = {}; - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - ASSERT_THAT(RetryEINTR(sendmsg)(fd.get(), &msg, 0), SyscallSucceeds()); - - int type = -1; - do { - int peeklen; - int len; - - iov.iov_base = NULL; - iov.iov_len = 0; - - // Call recvmsg with MSG_PEEK and MSG_TRUNC. This will peek at the message - // and return it's full length. - // See: MSG_TRUNC http://man7.org/linux/man-pages/man2/recv.2.html - ASSERT_THAT( - peeklen = RetryEINTR(recvmsg)(fd.get(), &msg, MSG_PEEK | MSG_TRUNC), - SyscallSucceeds()); - - // Message should always be truncated. - ASSERT_EQ(msg.msg_flags & MSG_TRUNC, MSG_TRUNC); - ASSERT_NE(peeklen, 0); - - // Reset the message flags for the next call. - msg.msg_flags = 0; - - // Make the actual call to recvmsg to get the actual data. We will use - // the length returned from the peek call for the allocated buffer size.. - std::vector<char> buf(peeklen); - iov.iov_base = buf.data(); - iov.iov_len = buf.size(); - ASSERT_THAT(len = RetryEINTR(recvmsg)(fd.get(), &msg, 0), - SyscallSucceeds()); - - // Message should not be truncated since we allocated the correct buffer - // size. - EXPECT_NE(msg.msg_flags & MSG_TRUNC, MSG_TRUNC); - - // MSG_PEEK should have left data on the socket and the subsequent call - // with should have retrieved the same data. Both calls should have - // returned the message's full length so they should be equal. - ASSERT_NE(len, 0); - ASSERT_EQ(peeklen, len); - - for (struct nlmsghdr* hdr = reinterpret_cast<struct nlmsghdr*>(buf.data()); - NLMSG_OK(hdr, len); hdr = NLMSG_NEXT(hdr, len)) { - type = hdr->nlmsg_type; - } - } while (type != NLMSG_DONE && type != NLMSG_ERROR); -} - -// No SCM_CREDENTIALS are received without SO_PASSCRED set. -TEST(NetlinkRouteTest, NoPasscredNoCreds) { - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_ROUTE)); - - ASSERT_THAT(setsockopt(fd.get(), SOL_SOCKET, SO_PASSCRED, &kSockOptOff, - sizeof(kSockOptOff)), - SyscallSucceeds()); - - struct request { - struct nlmsghdr hdr; - struct rtgenmsg rgm; - }; - - struct request req; - req.hdr.nlmsg_len = sizeof(req); - req.hdr.nlmsg_type = RTM_GETADDR; - req.hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP; - req.hdr.nlmsg_seq = kSeq; - req.rgm.rtgen_family = AF_UNSPEC; - - struct iovec iov = {}; - iov.iov_base = &req; - iov.iov_len = sizeof(req); - - struct msghdr msg = {}; - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - ASSERT_THAT(RetryEINTR(sendmsg)(fd.get(), &msg, 0), SyscallSucceeds()); - - iov.iov_base = NULL; - iov.iov_len = 0; - - char control[CMSG_SPACE(sizeof(struct ucred))] = {}; - msg.msg_control = control; - msg.msg_controllen = sizeof(control); - - // Note: This test assumes at least one message is returned by the - // RTM_GETADDR request. - ASSERT_THAT(RetryEINTR(recvmsg)(fd.get(), &msg, 0), SyscallSucceeds()); - - // No control messages. - EXPECT_EQ(CMSG_FIRSTHDR(&msg), nullptr); -} - -// SCM_CREDENTIALS are received with SO_PASSCRED set. -TEST(NetlinkRouteTest, PasscredCreds) { - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_ROUTE)); - - ASSERT_THAT(setsockopt(fd.get(), SOL_SOCKET, SO_PASSCRED, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); - - struct request { - struct nlmsghdr hdr; - struct rtgenmsg rgm; - }; - - struct request req; - req.hdr.nlmsg_len = sizeof(req); - req.hdr.nlmsg_type = RTM_GETADDR; - req.hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP; - req.hdr.nlmsg_seq = kSeq; - req.rgm.rtgen_family = AF_UNSPEC; - - struct iovec iov = {}; - iov.iov_base = &req; - iov.iov_len = sizeof(req); - - struct msghdr msg = {}; - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - ASSERT_THAT(RetryEINTR(sendmsg)(fd.get(), &msg, 0), SyscallSucceeds()); - - iov.iov_base = NULL; - iov.iov_len = 0; - - char control[CMSG_SPACE(sizeof(struct ucred))] = {}; - msg.msg_control = control; - msg.msg_controllen = sizeof(control); - - // Note: This test assumes at least one message is returned by the - // RTM_GETADDR request. - ASSERT_THAT(RetryEINTR(recvmsg)(fd.get(), &msg, 0), SyscallSucceeds()); - - struct ucred creds; - struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg); - ASSERT_NE(cmsg, nullptr); - ASSERT_EQ(cmsg->cmsg_len, CMSG_LEN(sizeof(creds))); - ASSERT_EQ(cmsg->cmsg_level, SOL_SOCKET); - ASSERT_EQ(cmsg->cmsg_type, SCM_CREDENTIALS); - - memcpy(&creds, CMSG_DATA(cmsg), sizeof(creds)); - - // The peer is the kernel, which is "PID" 0. - EXPECT_EQ(creds.pid, 0); - // The kernel identifies as root. Also allow nobody in case this test is - // running in a userns without root mapped. - EXPECT_THAT(creds.uid, AnyOf(Eq(0), Eq(65534))); - EXPECT_THAT(creds.gid, AnyOf(Eq(0), Eq(65534))); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_netlink_uevent.cc b/test/syscalls/linux/socket_netlink_uevent.cc deleted file mode 100644 index da425bed4..000000000 --- a/test/syscalls/linux/socket_netlink_uevent.cc +++ /dev/null @@ -1,83 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <linux/filter.h> -#include <linux/netlink.h> -#include <sys/socket.h> -#include <sys/types.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "test/syscalls/linux/socket_netlink_util.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/test_util.h" - -// Tests for NETLINK_KOBJECT_UEVENT sockets. -// -// gVisor never sends any messages on these sockets, so we don't test the events -// themselves. - -namespace gvisor { -namespace testing { - -namespace { - -// SO_PASSCRED can be enabled. Since no messages are sent in gVisor, we don't -// actually test receiving credentials. -TEST(NetlinkUeventTest, PassCred) { - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_KOBJECT_UEVENT)); - - EXPECT_THAT(setsockopt(fd.get(), SOL_SOCKET, SO_PASSCRED, &kSockOptOn, - sizeof(kSockOptOn)), - SyscallSucceeds()); -} - -// SO_DETACH_FILTER fails without a filter already installed. -TEST(NetlinkUeventTest, DetachNoFilter) { - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_KOBJECT_UEVENT)); - - int opt; - EXPECT_THAT( - setsockopt(fd.get(), SOL_SOCKET, SO_DETACH_FILTER, &opt, sizeof(opt)), - SyscallFailsWithErrno(ENOENT)); -} - -// We can attach a BPF filter. -TEST(NetlinkUeventTest, AttachFilter) { - FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(NetlinkBoundSocket(NETLINK_KOBJECT_UEVENT)); - - // Minimal BPF program: a single ret. - struct sock_filter filter = {0x6, 0, 0, 0}; - struct sock_fprog prog = {}; - prog.len = 1; - prog.filter = &filter; - - EXPECT_THAT( - setsockopt(fd.get(), SOL_SOCKET, SO_ATTACH_FILTER, &prog, sizeof(prog)), - SyscallSucceeds()); - - int opt; - EXPECT_THAT( - setsockopt(fd.get(), SOL_SOCKET, SO_DETACH_FILTER, &opt, sizeof(opt)), - SyscallSucceeds()); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_netlink_util.cc b/test/syscalls/linux/socket_netlink_util.cc deleted file mode 100644 index 952eecfe8..000000000 --- a/test/syscalls/linux/socket_netlink_util.cc +++ /dev/null @@ -1,187 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/syscalls/linux/socket_netlink_util.h" - -#include <linux/if_arp.h> -#include <linux/netlink.h> -#include <linux/rtnetlink.h> -#include <sys/socket.h> - -#include <vector> - -#include "absl/strings/str_cat.h" -#include "test/syscalls/linux/socket_test_util.h" - -namespace gvisor { -namespace testing { - -PosixErrorOr<FileDescriptor> NetlinkBoundSocket(int protocol) { - FileDescriptor fd; - ASSIGN_OR_RETURN_ERRNO(fd, Socket(AF_NETLINK, SOCK_RAW, protocol)); - - struct sockaddr_nl addr = {}; - addr.nl_family = AF_NETLINK; - - RETURN_ERROR_IF_SYSCALL_FAIL( - bind(fd.get(), reinterpret_cast<struct sockaddr*>(&addr), sizeof(addr))); - MaybeSave(); - - return std::move(fd); -} - -PosixErrorOr<uint32_t> NetlinkPortID(int fd) { - struct sockaddr_nl addr; - socklen_t addrlen = sizeof(addr); - - RETURN_ERROR_IF_SYSCALL_FAIL( - getsockname(fd, reinterpret_cast<struct sockaddr*>(&addr), &addrlen)); - MaybeSave(); - - return static_cast<uint32_t>(addr.nl_pid); -} - -PosixError NetlinkRequestResponse( - const FileDescriptor& fd, void* request, size_t len, - const std::function<void(const struct nlmsghdr* hdr)>& fn, - bool expect_nlmsgerr) { - struct iovec iov = {}; - iov.iov_base = request; - iov.iov_len = len; - - struct msghdr msg = {}; - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - // No destination required; it defaults to pid 0, the kernel. - - RETURN_ERROR_IF_SYSCALL_FAIL(RetryEINTR(sendmsg)(fd.get(), &msg, 0)); - - constexpr size_t kBufferSize = 4096; - std::vector<char> buf(kBufferSize); - iov.iov_base = buf.data(); - iov.iov_len = buf.size(); - - // If NLM_F_MULTI is set, response is a series of messages that ends with a - // NLMSG_DONE message. - int type = -1; - int flags = 0; - do { - int len; - RETURN_ERROR_IF_SYSCALL_FAIL(len = RetryEINTR(recvmsg)(fd.get(), &msg, 0)); - - // We don't bother with the complexity of dealing with truncated messages. - // We must allocate a large enough buffer up front. - if ((msg.msg_flags & MSG_TRUNC) == MSG_TRUNC) { - return PosixError(EIO, - absl::StrCat("Received truncated message with flags: ", - msg.msg_flags)); - } - - for (struct nlmsghdr* hdr = reinterpret_cast<struct nlmsghdr*>(buf.data()); - NLMSG_OK(hdr, len); hdr = NLMSG_NEXT(hdr, len)) { - fn(hdr); - flags = hdr->nlmsg_flags; - type = hdr->nlmsg_type; - // Done should include an integer payload for dump_done_errno. - // See net/netlink/af_netlink.c:netlink_dump - // Some tools like the 'ip' tool check the minimum length of the - // NLMSG_DONE message. - if (type == NLMSG_DONE) { - EXPECT_GE(hdr->nlmsg_len, NLMSG_LENGTH(sizeof(int))); - } - } - } while ((flags & NLM_F_MULTI) && type != NLMSG_DONE && type != NLMSG_ERROR); - - if (expect_nlmsgerr) { - EXPECT_EQ(type, NLMSG_ERROR); - } else if (flags & NLM_F_MULTI) { - EXPECT_EQ(type, NLMSG_DONE); - } - return NoError(); -} - -PosixError NetlinkRequestResponseSingle( - const FileDescriptor& fd, void* request, size_t len, - const std::function<void(const struct nlmsghdr* hdr)>& fn) { - struct iovec iov = {}; - iov.iov_base = request; - iov.iov_len = len; - - struct msghdr msg = {}; - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - // No destination required; it defaults to pid 0, the kernel. - - RETURN_ERROR_IF_SYSCALL_FAIL(RetryEINTR(sendmsg)(fd.get(), &msg, 0)); - - constexpr size_t kBufferSize = 4096; - std::vector<char> buf(kBufferSize); - iov.iov_base = buf.data(); - iov.iov_len = buf.size(); - - int ret; - RETURN_ERROR_IF_SYSCALL_FAIL(ret = RetryEINTR(recvmsg)(fd.get(), &msg, 0)); - - // We don't bother with the complexity of dealing with truncated messages. - // We must allocate a large enough buffer up front. - if ((msg.msg_flags & MSG_TRUNC) == MSG_TRUNC) { - return PosixError( - EIO, - absl::StrCat("Received truncated message with flags: ", msg.msg_flags)); - } - - for (struct nlmsghdr* hdr = reinterpret_cast<struct nlmsghdr*>(buf.data()); - NLMSG_OK(hdr, ret); hdr = NLMSG_NEXT(hdr, ret)) { - fn(hdr); - } - - return NoError(); -} - -PosixError NetlinkRequestAckOrError(const FileDescriptor& fd, uint32_t seq, - void* request, size_t len) { - // Dummy negative number for no error message received. - // We won't get a negative error number so there will be no confusion. - int err = -42; - RETURN_IF_ERRNO(NetlinkRequestResponse( - fd, request, len, - [&](const struct nlmsghdr* hdr) { - EXPECT_EQ(NLMSG_ERROR, hdr->nlmsg_type); - EXPECT_EQ(hdr->nlmsg_seq, seq); - EXPECT_GE(hdr->nlmsg_len, sizeof(*hdr) + sizeof(struct nlmsgerr)); - - const struct nlmsgerr* msg = - reinterpret_cast<const struct nlmsgerr*>(NLMSG_DATA(hdr)); - err = -msg->error; - }, - true)); - return PosixError(err); -} - -const struct rtattr* FindRtAttr(const struct nlmsghdr* hdr, - const struct ifinfomsg* msg, int16_t attr) { - const int ifi_space = NLMSG_SPACE(sizeof(*msg)); - int attrlen = hdr->nlmsg_len - ifi_space; - const struct rtattr* rta = reinterpret_cast<const struct rtattr*>( - reinterpret_cast<const uint8_t*>(hdr) + NLMSG_ALIGN(ifi_space)); - for (; RTA_OK(rta, attrlen); rta = RTA_NEXT(rta, attrlen)) { - if (rta->rta_type == attr) { - return rta; - } - } - return nullptr; -} - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_netlink_util.h b/test/syscalls/linux/socket_netlink_util.h deleted file mode 100644 index e13ead406..000000000 --- a/test/syscalls/linux/socket_netlink_util.h +++ /dev/null @@ -1,62 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_SYSCALLS_SOCKET_NETLINK_UTIL_H_ -#define GVISOR_TEST_SYSCALLS_SOCKET_NETLINK_UTIL_H_ - -#include <sys/socket.h> -// socket.h has to be included before if_arp.h. -#include <linux/if_arp.h> -#include <linux/netlink.h> -#include <linux/rtnetlink.h> - -#include "test/util/file_descriptor.h" -#include "test/util/posix_error.h" - -namespace gvisor { -namespace testing { - -// Returns a bound netlink socket. -PosixErrorOr<FileDescriptor> NetlinkBoundSocket(int protocol); - -// Returns the port ID of the passed socket. -PosixErrorOr<uint32_t> NetlinkPortID(int fd); - -// Send the passed request and call fn on all response netlink messages. -// -// To be used on requests with NLM_F_MULTI reponses. -PosixError NetlinkRequestResponse( - const FileDescriptor& fd, void* request, size_t len, - const std::function<void(const struct nlmsghdr* hdr)>& fn, - bool expect_nlmsgerr); - -// Send the passed request and call fn on all response netlink messages. -// -// To be used on requests without NLM_F_MULTI reponses. -PosixError NetlinkRequestResponseSingle( - const FileDescriptor& fd, void* request, size_t len, - const std::function<void(const struct nlmsghdr* hdr)>& fn); - -// Send the passed request then expect and return an ack or error. -PosixError NetlinkRequestAckOrError(const FileDescriptor& fd, uint32_t seq, - void* request, size_t len); - -// Find rtnetlink attribute in message. -const struct rtattr* FindRtAttr(const struct nlmsghdr* hdr, - const struct ifinfomsg* msg, int16_t attr); - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_SYSCALLS_SOCKET_NETLINK_UTIL_H_ diff --git a/test/syscalls/linux/socket_non_blocking.cc b/test/syscalls/linux/socket_non_blocking.cc deleted file mode 100644 index c3520cadd..000000000 --- a/test/syscalls/linux/socket_non_blocking.cc +++ /dev/null @@ -1,62 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/syscalls/linux/socket_non_blocking.h" - -#include <stdio.h> -#include <sys/socket.h> -#include <sys/types.h> -#include <sys/un.h> - -#include "gtest/gtest.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -TEST_P(NonBlockingSocketPairTest, ReadNothingAvailable) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - char buf[20] = {}; - ASSERT_THAT(ReadFd(sockets->first_fd(), buf, sizeof(buf)), - SyscallFailsWithErrno(EAGAIN)); -} - -TEST_P(NonBlockingSocketPairTest, RecvNothingAvailable) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - char buf[20] = {}; - ASSERT_THAT(RetryEINTR(recv)(sockets->first_fd(), buf, sizeof(buf), 0), - SyscallFailsWithErrno(EAGAIN)); -} - -TEST_P(NonBlockingSocketPairTest, RecvMsgNothingAvailable) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - struct iovec iov; - char buf[20] = {}; - iov.iov_base = buf; - iov.iov_len = sizeof(buf); - struct msghdr msg = {}; - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - ASSERT_THAT(RetryEINTR(recvmsg)(sockets->first_fd(), &msg, 0), - SyscallFailsWithErrno(EAGAIN)); -} - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_non_blocking.h b/test/syscalls/linux/socket_non_blocking.h deleted file mode 100644 index bd3e02fd2..000000000 --- a/test/syscalls/linux/socket_non_blocking.h +++ /dev/null @@ -1,29 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_SYSCALLS_LINUX_SOCKET_NON_BLOCKING_H_ -#define GVISOR_TEST_SYSCALLS_LINUX_SOCKET_NON_BLOCKING_H_ - -#include "test/syscalls/linux/socket_test_util.h" - -namespace gvisor { -namespace testing { - -// Test fixture for tests that apply to pairs of connected non-blocking sockets. -using NonBlockingSocketPairTest = SocketPairTest; - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_SYSCALLS_LINUX_SOCKET_NON_BLOCKING_H_ diff --git a/test/syscalls/linux/socket_non_stream.cc b/test/syscalls/linux/socket_non_stream.cc deleted file mode 100644 index c61817f14..000000000 --- a/test/syscalls/linux/socket_non_stream.cc +++ /dev/null @@ -1,337 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/syscalls/linux/socket_non_stream.h" - -#include <stdio.h> -#include <sys/socket.h> -#include <sys/un.h> - -#include "gtest/gtest.h" -#include "test/syscalls/linux/ip_socket_test_util.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -TEST_P(NonStreamSocketPairTest, SendMsgTooLarge) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - int sndbuf; - socklen_t length = sizeof(sndbuf); - ASSERT_THAT( - getsockopt(sockets->first_fd(), SOL_SOCKET, SO_SNDBUF, &sndbuf, &length), - SyscallSucceeds()); - - // Make the call too large to fit in the send buffer. - const int buffer_size = 3 * sndbuf; - - EXPECT_THAT(SendLargeSendMsg(sockets, buffer_size, false /* reader */), - SyscallFailsWithErrno(EMSGSIZE)); -} - -// Stream sockets allow data sent with a single (e.g. write, sendmsg) syscall -// to be read in pieces with multiple (e.g. read, recvmsg) syscalls. -// -// SplitRecv checks that control messages can only be read on the first (e.g. -// read, recvmsg) syscall, even if it doesn't provide space for the control -// message. -TEST_P(NonStreamSocketPairTest, SplitRecv) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - char sent_data[512]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - ASSERT_THAT( - RetryEINTR(send)(sockets->first_fd(), sent_data, sizeof(sent_data), 0), - SyscallSucceedsWithValue(sizeof(sent_data))); - char received_data[sizeof(sent_data) / 2]; - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), received_data, - sizeof(received_data), 0), - SyscallSucceedsWithValue(sizeof(received_data))); - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(received_data))); - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), received_data, - sizeof(received_data), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); -} - -// Stream sockets allow data sent with multiple sends to be read in a single -// recv. Datagram sockets do not. -// -// SingleRecv checks that only a single message is readable in a single recv. -TEST_P(NonStreamSocketPairTest, SingleRecv) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - char sent_data1[20]; - RandomizeBuffer(sent_data1, sizeof(sent_data1)); - ASSERT_THAT( - RetryEINTR(send)(sockets->first_fd(), sent_data1, sizeof(sent_data1), 0), - SyscallSucceedsWithValue(sizeof(sent_data1))); - char sent_data2[20]; - RandomizeBuffer(sent_data2, sizeof(sent_data2)); - ASSERT_THAT( - RetryEINTR(send)(sockets->first_fd(), sent_data2, sizeof(sent_data2), 0), - SyscallSucceedsWithValue(sizeof(sent_data2))); - char received_data[sizeof(sent_data1) + sizeof(sent_data2)]; - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), received_data, - sizeof(received_data), 0), - SyscallSucceedsWithValue(sizeof(sent_data1))); - EXPECT_EQ(0, memcmp(sent_data1, received_data, sizeof(sent_data1))); -} - -TEST_P(NonStreamSocketPairTest, RecvmsgMsghdrFlagMsgTrunc) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[10]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - ASSERT_THAT( - RetryEINTR(send)(sockets->first_fd(), sent_data, sizeof(sent_data), 0), - SyscallSucceedsWithValue(sizeof(sent_data))); - - char received_data[sizeof(sent_data) / 2] = {}; - - struct iovec iov; - iov.iov_base = received_data; - iov.iov_len = sizeof(received_data); - struct msghdr msg = {}; - msg.msg_flags = -1; - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - ASSERT_THAT(RetryEINTR(recvmsg)(sockets->second_fd(), &msg, 0), - SyscallSucceedsWithValue(sizeof(received_data))); - EXPECT_EQ(0, memcmp(received_data, sent_data, sizeof(received_data))); - - // Check that msghdr flags were updated. - EXPECT_EQ(msg.msg_flags & MSG_TRUNC, MSG_TRUNC); -} - -// Stream sockets allow data sent with multiple sends to be peeked at in a -// single recv. Datagram sockets (except for unix sockets) do not. -// -// SinglePeek checks that only a single message is peekable in a single recv. -TEST_P(NonStreamSocketPairTest, SinglePeek) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - char sent_data1[20]; - RandomizeBuffer(sent_data1, sizeof(sent_data1)); - ASSERT_THAT( - RetryEINTR(send)(sockets->first_fd(), sent_data1, sizeof(sent_data1), 0), - SyscallSucceedsWithValue(sizeof(sent_data1))); - char sent_data2[20]; - RandomizeBuffer(sent_data2, sizeof(sent_data2)); - ASSERT_THAT( - RetryEINTR(send)(sockets->first_fd(), sent_data2, sizeof(sent_data2), 0), - SyscallSucceedsWithValue(sizeof(sent_data2))); - char received_data[sizeof(sent_data1) + sizeof(sent_data2)]; - for (int i = 0; i < 3; i++) { - memset(received_data, 0, sizeof(received_data)); - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), received_data, - sizeof(received_data), MSG_PEEK), - SyscallSucceedsWithValue(sizeof(sent_data1))); - EXPECT_EQ(0, memcmp(sent_data1, received_data, sizeof(sent_data1))); - } - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), received_data, - sizeof(sent_data1), 0), - SyscallSucceedsWithValue(sizeof(sent_data1))); - EXPECT_EQ(0, memcmp(sent_data1, received_data, sizeof(sent_data1))); - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), received_data, - sizeof(sent_data2), 0), - SyscallSucceedsWithValue(sizeof(sent_data2))); - EXPECT_EQ(0, memcmp(sent_data2, received_data, sizeof(sent_data2))); -} - -TEST_P(NonStreamSocketPairTest, MsgTruncTruncation) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - char sent_data[512]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - ASSERT_THAT( - RetryEINTR(send)(sockets->first_fd(), sent_data, sizeof(sent_data), 0), - SyscallSucceedsWithValue(sizeof(sent_data))); - char received_data[sizeof(sent_data)] = {}; - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), received_data, - sizeof(received_data) / 2, MSG_TRUNC), - SyscallSucceedsWithValue(sizeof(sent_data))); - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data) / 2)); - - // Check that we didn't get any extra data. - EXPECT_NE(0, memcmp(sent_data + sizeof(sent_data) / 2, - received_data + sizeof(received_data) / 2, - sizeof(sent_data) / 2)); -} - -TEST_P(NonStreamSocketPairTest, MsgTruncTruncationRecvmsgMsghdrFlagMsgTrunc) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[10]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - ASSERT_THAT( - RetryEINTR(send)(sockets->first_fd(), sent_data, sizeof(sent_data), 0), - SyscallSucceedsWithValue(sizeof(sent_data))); - - char received_data[sizeof(sent_data) / 2] = {}; - - struct iovec iov; - iov.iov_base = received_data; - iov.iov_len = sizeof(received_data); - struct msghdr msg = {}; - msg.msg_flags = -1; - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - ASSERT_THAT(RetryEINTR(recvmsg)(sockets->second_fd(), &msg, MSG_TRUNC), - SyscallSucceedsWithValue(sizeof(sent_data))); - EXPECT_EQ(0, memcmp(received_data, sent_data, sizeof(received_data))); - - // Check that msghdr flags were updated. - EXPECT_EQ(msg.msg_flags & MSG_TRUNC, MSG_TRUNC); -} - -TEST_P(NonStreamSocketPairTest, MsgTruncSameSize) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - char sent_data[512]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - ASSERT_THAT( - RetryEINTR(send)(sockets->first_fd(), sent_data, sizeof(sent_data), 0), - SyscallSucceedsWithValue(sizeof(sent_data))); - char received_data[sizeof(sent_data)]; - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), received_data, - sizeof(received_data), MSG_TRUNC), - SyscallSucceedsWithValue(sizeof(received_data))); - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); -} - -TEST_P(NonStreamSocketPairTest, MsgTruncNotFull) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - char sent_data[512]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - ASSERT_THAT( - RetryEINTR(send)(sockets->first_fd(), sent_data, sizeof(sent_data), 0), - SyscallSucceedsWithValue(sizeof(sent_data))); - char received_data[2 * sizeof(sent_data)]; - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), received_data, - sizeof(received_data), MSG_TRUNC), - SyscallSucceedsWithValue(sizeof(sent_data))); - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); -} - -// This test tests reading from a socket with MSG_TRUNC and a zero length -// receive buffer. The user should be able to get the message length. -TEST_P(NonStreamSocketPairTest, RecvmsgMsgTruncZeroLen) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[10]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - ASSERT_THAT( - RetryEINTR(send)(sockets->first_fd(), sent_data, sizeof(sent_data), 0), - SyscallSucceedsWithValue(sizeof(sent_data))); - - // The receive buffer is of zero length. - char received_data[0] = {}; - - struct iovec iov; - iov.iov_base = received_data; - iov.iov_len = sizeof(received_data); - struct msghdr msg = {}; - msg.msg_flags = -1; - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - // The syscall succeeds returning the full size of the message on the socket. - ASSERT_THAT(RetryEINTR(recvmsg)(sockets->second_fd(), &msg, MSG_TRUNC), - SyscallSucceedsWithValue(sizeof(sent_data))); - - // Check that MSG_TRUNC is set on msghdr flags. - EXPECT_EQ(msg.msg_flags & MSG_TRUNC, MSG_TRUNC); -} - -// This test tests reading from a socket with MSG_TRUNC | MSG_PEEK and a zero -// length receive buffer. The user should be able to get the message length -// without reading data off the socket. -TEST_P(NonStreamSocketPairTest, RecvmsgMsgTruncMsgPeekZeroLen) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[10]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - ASSERT_THAT( - RetryEINTR(send)(sockets->first_fd(), sent_data, sizeof(sent_data), 0), - SyscallSucceedsWithValue(sizeof(sent_data))); - - // The receive buffer is of zero length. - char peek_data[0] = {}; - - struct iovec peek_iov; - peek_iov.iov_base = peek_data; - peek_iov.iov_len = sizeof(peek_data); - struct msghdr peek_msg = {}; - peek_msg.msg_flags = -1; - peek_msg.msg_iov = &peek_iov; - peek_msg.msg_iovlen = 1; - - // The syscall succeeds returning the full size of the message on the socket. - ASSERT_THAT(RetryEINTR(recvmsg)(sockets->second_fd(), &peek_msg, - MSG_TRUNC | MSG_PEEK), - SyscallSucceedsWithValue(sizeof(sent_data))); - - // Check that MSG_TRUNC is set on msghdr flags because the receive buffer is - // smaller than the message size. - EXPECT_EQ(peek_msg.msg_flags & MSG_TRUNC, MSG_TRUNC); - - char received_data[sizeof(sent_data)] = {}; - - struct iovec received_iov; - received_iov.iov_base = received_data; - received_iov.iov_len = sizeof(received_data); - struct msghdr received_msg = {}; - received_msg.msg_flags = -1; - received_msg.msg_iov = &received_iov; - received_msg.msg_iovlen = 1; - - // Next we can read the actual data. - ASSERT_THAT( - RetryEINTR(recvmsg)(sockets->second_fd(), &received_msg, MSG_TRUNC), - SyscallSucceedsWithValue(sizeof(sent_data))); - - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); - - // Check that MSG_TRUNC is not set on msghdr flags because we read the whole - // message. - EXPECT_EQ(received_msg.msg_flags & MSG_TRUNC, 0); -} - -// This test tests reading from a socket with MSG_TRUNC | MSG_PEEK and a zero -// length receive buffer and MSG_DONTWAIT. The user should be able to get an -// EAGAIN or EWOULDBLOCK error response. -TEST_P(NonStreamSocketPairTest, RecvmsgTruncPeekDontwaitZeroLen) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - // NOTE: We don't send any data on the socket. - - // The receive buffer is of zero length. - char peek_data[0] = {}; - - struct iovec peek_iov; - peek_iov.iov_base = peek_data; - peek_iov.iov_len = sizeof(peek_data); - struct msghdr peek_msg = {}; - peek_msg.msg_flags = -1; - peek_msg.msg_iov = &peek_iov; - peek_msg.msg_iovlen = 1; - - // recvmsg fails with EAGAIN because no data is available on the socket. - ASSERT_THAT(RetryEINTR(recvmsg)(sockets->second_fd(), &peek_msg, - MSG_TRUNC | MSG_PEEK | MSG_DONTWAIT), - SyscallFailsWithErrno(EAGAIN)); -} - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_non_stream.h b/test/syscalls/linux/socket_non_stream.h deleted file mode 100644 index 469fbe6a2..000000000 --- a/test/syscalls/linux/socket_non_stream.h +++ /dev/null @@ -1,29 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_SYSCALLS_LINUX_SOCKET_NON_STREAM_H_ -#define GVISOR_TEST_SYSCALLS_LINUX_SOCKET_NON_STREAM_H_ - -#include "test/syscalls/linux/socket_test_util.h" - -namespace gvisor { -namespace testing { - -// Test fixture for tests that apply to pairs of connected non-stream sockets. -using NonStreamSocketPairTest = SocketPairTest; - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_SYSCALLS_LINUX_SOCKET_NON_STREAM_H_ diff --git a/test/syscalls/linux/socket_non_stream_blocking.cc b/test/syscalls/linux/socket_non_stream_blocking.cc deleted file mode 100644 index b052f6e61..000000000 --- a/test/syscalls/linux/socket_non_stream_blocking.cc +++ /dev/null @@ -1,85 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/syscalls/linux/socket_non_stream_blocking.h" - -#include <stdio.h> -#include <sys/socket.h> -#include <sys/types.h> -#include <sys/un.h> - -#include "gtest/gtest.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { - -TEST_P(BlockingNonStreamSocketPairTest, RecvLessThanBufferWaitAll) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[100]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - ASSERT_THAT(write(sockets->first_fd(), sent_data, sizeof(sent_data)), - SyscallSucceedsWithValue(sizeof(sent_data))); - - char received_data[sizeof(sent_data) * 2] = {}; - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), received_data, - sizeof(received_data), MSG_WAITALL), - SyscallSucceedsWithValue(sizeof(sent_data))); -} - -// This test tests reading from a socket with MSG_TRUNC | MSG_PEEK and a zero -// length receive buffer and MSG_DONTWAIT. The recvmsg call should block on -// reading the data. -TEST_P(BlockingNonStreamSocketPairTest, - RecvmsgTruncPeekDontwaitZeroLenBlocking) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - // NOTE: We don't initially send any data on the socket. - const int data_size = 10; - char sent_data[data_size]; - RandomizeBuffer(sent_data, data_size); - - // The receive buffer is of zero length. - char peek_data[0] = {}; - - struct iovec peek_iov; - peek_iov.iov_base = peek_data; - peek_iov.iov_len = sizeof(peek_data); - struct msghdr peek_msg = {}; - peek_msg.msg_flags = -1; - peek_msg.msg_iov = &peek_iov; - peek_msg.msg_iovlen = 1; - - ScopedThread t([&]() { - // The syscall succeeds returning the full size of the message on the - // socket. This should block until there is data on the socket. - ASSERT_THAT(RetryEINTR(recvmsg)(sockets->second_fd(), &peek_msg, - MSG_TRUNC | MSG_PEEK), - SyscallSucceedsWithValue(data_size)); - }); - - absl::SleepFor(absl::Seconds(1)); - ASSERT_THAT(RetryEINTR(send)(sockets->first_fd(), sent_data, data_size, 0), - SyscallSucceedsWithValue(data_size)); -} - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_non_stream_blocking.h b/test/syscalls/linux/socket_non_stream_blocking.h deleted file mode 100644 index 6e205a039..000000000 --- a/test/syscalls/linux/socket_non_stream_blocking.h +++ /dev/null @@ -1,30 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_SYSCALLS_LINUX_SOCKET_NON_STREAM_BLOCKING_H_ -#define GVISOR_TEST_SYSCALLS_LINUX_SOCKET_NON_STREAM_BLOCKING_H_ - -#include "test/syscalls/linux/socket_test_util.h" - -namespace gvisor { -namespace testing { - -// Test fixture for tests that apply to pairs of blocking connected non-stream -// sockets. -using BlockingNonStreamSocketPairTest = SocketPairTest; - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_SYSCALLS_LINUX_SOCKET_NON_STREAM_BLOCKING_H_ diff --git a/test/syscalls/linux/socket_stream.cc b/test/syscalls/linux/socket_stream.cc deleted file mode 100644 index 6522b2e01..000000000 --- a/test/syscalls/linux/socket_stream.cc +++ /dev/null @@ -1,178 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/syscalls/linux/socket_stream.h" - -#include <stdio.h> -#include <sys/socket.h> -#include <sys/types.h> -#include <sys/un.h> - -#include "gtest/gtest.h" -#include "absl/time/clock.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -TEST_P(StreamSocketPairTest, SplitRecv) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - char sent_data[512]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - ASSERT_THAT( - RetryEINTR(send)(sockets->first_fd(), sent_data, sizeof(sent_data), 0), - SyscallSucceedsWithValue(sizeof(sent_data))); - char received_data[sizeof(sent_data) / 2]; - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), received_data, - sizeof(received_data), 0), - SyscallSucceedsWithValue(sizeof(received_data))); - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(received_data))); - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), received_data, - sizeof(received_data), 0), - SyscallSucceedsWithValue(sizeof(received_data))); - EXPECT_EQ(0, memcmp(sent_data + sizeof(received_data), received_data, - sizeof(received_data))); -} - -// Stream sockets allow data sent with multiple sends to be read in a single -// recv. -// -// CoalescedRecv checks that multiple messages are readable in a single recv. -TEST_P(StreamSocketPairTest, CoalescedRecv) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - char sent_data1[20]; - RandomizeBuffer(sent_data1, sizeof(sent_data1)); - ASSERT_THAT( - RetryEINTR(send)(sockets->first_fd(), sent_data1, sizeof(sent_data1), 0), - SyscallSucceedsWithValue(sizeof(sent_data1))); - char sent_data2[20]; - RandomizeBuffer(sent_data2, sizeof(sent_data2)); - ASSERT_THAT( - RetryEINTR(send)(sockets->first_fd(), sent_data2, sizeof(sent_data2), 0), - SyscallSucceedsWithValue(sizeof(sent_data2))); - char received_data[sizeof(sent_data1) + sizeof(sent_data2)]; - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), received_data, - sizeof(received_data), 0), - SyscallSucceedsWithValue(sizeof(received_data))); - EXPECT_EQ(0, memcmp(sent_data1, received_data, sizeof(sent_data1))); - EXPECT_EQ(0, memcmp(sent_data2, received_data + sizeof(sent_data1), - sizeof(sent_data2))); -} - -TEST_P(StreamSocketPairTest, WriteOneSideClosed) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - ASSERT_THAT(close(sockets->release_first_fd()), SyscallSucceeds()); - const char str[] = "abc"; - ASSERT_THAT(write(sockets->second_fd(), str, 3), - SyscallFailsWithErrno(EPIPE)); -} - -TEST_P(StreamSocketPairTest, RecvmsgMsghdrFlagsNoMsgTrunc) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[10]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - ASSERT_THAT( - RetryEINTR(send)(sockets->first_fd(), sent_data, sizeof(sent_data), 0), - SyscallSucceedsWithValue(sizeof(sent_data))); - - char received_data[sizeof(sent_data) / 2] = {}; - - struct iovec iov; - iov.iov_base = received_data; - iov.iov_len = sizeof(received_data); - struct msghdr msg = {}; - msg.msg_flags = -1; - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - ASSERT_THAT(RetryEINTR(recvmsg)(sockets->second_fd(), &msg, 0), - SyscallSucceedsWithValue(sizeof(received_data))); - EXPECT_EQ(0, memcmp(received_data, sent_data, sizeof(received_data))); - - // Check that msghdr flags were cleared (MSG_TRUNC was not set). - ASSERT_EQ(msg.msg_flags & MSG_TRUNC, 0); -} - -TEST_P(StreamSocketPairTest, RecvmsgTruncZeroLen) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[10]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - ASSERT_THAT( - RetryEINTR(send)(sockets->first_fd(), sent_data, sizeof(sent_data), 0), - SyscallSucceedsWithValue(sizeof(sent_data))); - - char received_data[0] = {}; - - struct iovec iov; - iov.iov_base = received_data; - iov.iov_len = sizeof(received_data); - struct msghdr msg = {}; - msg.msg_flags = -1; - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - ASSERT_THAT(RetryEINTR(recvmsg)(sockets->second_fd(), &msg, MSG_TRUNC), - SyscallSucceedsWithValue(0)); - - // Check that msghdr flags were cleared (MSG_TRUNC was not set). - ASSERT_EQ(msg.msg_flags & MSG_TRUNC, 0); -} - -TEST_P(StreamSocketPairTest, RecvmsgTruncPeekZeroLen) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[10]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - ASSERT_THAT( - RetryEINTR(send)(sockets->first_fd(), sent_data, sizeof(sent_data), 0), - SyscallSucceedsWithValue(sizeof(sent_data))); - - char received_data[0] = {}; - - struct iovec iov; - iov.iov_base = received_data; - iov.iov_len = sizeof(received_data); - struct msghdr msg = {}; - msg.msg_flags = -1; - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - ASSERT_THAT( - RetryEINTR(recvmsg)(sockets->second_fd(), &msg, MSG_TRUNC | MSG_PEEK), - SyscallSucceedsWithValue(0)); - - // Check that msghdr flags were cleared (MSG_TRUNC was not set). - ASSERT_EQ(msg.msg_flags & MSG_TRUNC, 0); -} - -TEST_P(StreamSocketPairTest, MsgTrunc) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - char sent_data[512]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - ASSERT_THAT( - RetryEINTR(send)(sockets->first_fd(), sent_data, sizeof(sent_data), 0), - SyscallSucceedsWithValue(sizeof(sent_data))); - char received_data[sizeof(sent_data)]; - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), received_data, - sizeof(received_data) / 2, MSG_TRUNC), - SyscallSucceedsWithValue(sizeof(sent_data) / 2)); - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data) / 2)); -} - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_stream.h b/test/syscalls/linux/socket_stream.h deleted file mode 100644 index b837b8f8c..000000000 --- a/test/syscalls/linux/socket_stream.h +++ /dev/null @@ -1,30 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_SYSCALLS_LINUX_SOCKET_STREAM_H_ -#define GVISOR_TEST_SYSCALLS_LINUX_SOCKET_STREAM_H_ - -#include "test/syscalls/linux/socket_test_util.h" - -namespace gvisor { -namespace testing { - -// Test fixture for tests that apply to pairs of blocking and non-blocking -// connected stream sockets. -using StreamSocketPairTest = SocketPairTest; - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_SYSCALLS_LINUX_SOCKET_STREAM_H_ diff --git a/test/syscalls/linux/socket_stream_blocking.cc b/test/syscalls/linux/socket_stream_blocking.cc deleted file mode 100644 index 538ee2268..000000000 --- a/test/syscalls/linux/socket_stream_blocking.cc +++ /dev/null @@ -1,163 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/syscalls/linux/socket_stream_blocking.h" - -#include <stdio.h> -#include <sys/socket.h> -#include <sys/types.h> -#include <sys/un.h> - -#include "gtest/gtest.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" -#include "test/util/timer_util.h" - -namespace gvisor { -namespace testing { - -TEST_P(BlockingStreamSocketPairTest, BlockPartialWriteClosed) { - // FIXME(b/35921550): gVisor doesn't support SO_SNDBUF on UDS, nor does it - // enforce any limit; it will write arbitrary amounts of data without - // blocking. - SKIP_IF(IsRunningOnGvisor()); - - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - int buffer_size; - socklen_t length = sizeof(buffer_size); - ASSERT_THAT(getsockopt(sockets->first_fd(), SOL_SOCKET, SO_SNDBUF, - &buffer_size, &length), - SyscallSucceeds()); - - int wfd = sockets->first_fd(); - ScopedThread t([wfd, buffer_size]() { - std::vector<char> buf(2 * buffer_size); - // Write more than fits in the buffer. Blocks then returns partial write - // when the other end is closed. The next call returns EPIPE. - // - // N.B. writes occur in chunks, so we may see less than buffer_size from - // the first call. - ASSERT_THAT(write(wfd, buf.data(), buf.size()), - SyscallSucceedsWithValue(::testing::Gt(0))); - ASSERT_THAT(write(wfd, buf.data(), buf.size()), - ::testing::AnyOf(SyscallFailsWithErrno(EPIPE), - SyscallFailsWithErrno(ECONNRESET))); - }); - - // Leave time for write to become blocked. - absl::SleepFor(absl::Seconds(1)); - - ASSERT_THAT(close(sockets->release_second_fd()), SyscallSucceeds()); -} - -// Random save may interrupt the call to sendmsg() in SendLargeSendMsg(), -// causing the write to be incomplete and the test to hang. -TEST_P(BlockingStreamSocketPairTest, SendMsgTooLarge_NoRandomSave) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - int sndbuf; - socklen_t length = sizeof(sndbuf); - ASSERT_THAT( - getsockopt(sockets->first_fd(), SOL_SOCKET, SO_SNDBUF, &sndbuf, &length), - SyscallSucceeds()); - - // Make the call too large to fit in the send buffer. - const int buffer_size = 3 * sndbuf; - - EXPECT_THAT(SendLargeSendMsg(sockets, buffer_size, true /* reader */), - SyscallSucceedsWithValue(buffer_size)); -} - -TEST_P(BlockingStreamSocketPairTest, RecvLessThanBuffer) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[100]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - ASSERT_THAT(write(sockets->first_fd(), sent_data, sizeof(sent_data)), - SyscallSucceedsWithValue(sizeof(sent_data))); - - char received_data[200] = {}; - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), received_data, - sizeof(received_data), 0), - SyscallSucceedsWithValue(sizeof(sent_data))); -} - -// Test that MSG_WAITALL causes recv to block until all requested data is -// received. Random save can interrupt blocking and cause received data to be -// returned, even if the amount received is less than the full requested amount. -TEST_P(BlockingStreamSocketPairTest, RecvLessThanBufferWaitAll_NoRandomSave) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[100]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - ASSERT_THAT(write(sockets->first_fd(), sent_data, sizeof(sent_data)), - SyscallSucceedsWithValue(sizeof(sent_data))); - - constexpr auto kDuration = absl::Milliseconds(200); - auto before = Now(CLOCK_MONOTONIC); - - const ScopedThread t([&]() { - absl::SleepFor(kDuration); - - // Don't let saving after the write interrupt the blocking recv. - const DisableSave ds; - - ASSERT_THAT(write(sockets->first_fd(), sent_data, sizeof(sent_data)), - SyscallSucceedsWithValue(sizeof(sent_data))); - }); - - char received_data[sizeof(sent_data) * 2] = {}; - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), received_data, - sizeof(received_data), MSG_WAITALL), - SyscallSucceedsWithValue(sizeof(received_data))); - - auto after = Now(CLOCK_MONOTONIC); - EXPECT_GE(after - before, kDuration); -} - -TEST_P(BlockingStreamSocketPairTest, SendTimeout) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - struct timeval tv { - .tv_sec = 0, .tv_usec = 10 - }; - EXPECT_THAT( - setsockopt(sockets->first_fd(), SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv)), - SyscallSucceeds()); - - std::vector<char> buf(kPageSize); - // We don't know how much data the socketpair will buffer, so we may do an - // arbitrarily large number of writes; saving after each write causes this - // test's time to explode. - const DisableSave ds; - for (;;) { - int ret; - ASSERT_THAT( - ret = RetryEINTR(send)(sockets->first_fd(), buf.data(), buf.size(), 0), - ::testing::AnyOf(SyscallSucceeds(), SyscallFailsWithErrno(EAGAIN))); - if (ret == -1) { - break; - } - } -} - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_stream_blocking.h b/test/syscalls/linux/socket_stream_blocking.h deleted file mode 100644 index 9fd19ff90..000000000 --- a/test/syscalls/linux/socket_stream_blocking.h +++ /dev/null @@ -1,30 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_SYSCALLS_LINUX_SOCKET_STREAM_BLOCKING_H_ -#define GVISOR_TEST_SYSCALLS_LINUX_SOCKET_STREAM_BLOCKING_H_ - -#include "test/syscalls/linux/socket_test_util.h" - -namespace gvisor { -namespace testing { - -// Test fixture for tests that apply to pairs of blocking connected stream -// sockets. -using BlockingStreamSocketPairTest = SocketPairTest; - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_SYSCALLS_LINUX_SOCKET_STREAM_BLOCKING_H_ diff --git a/test/syscalls/linux/socket_stream_nonblock.cc b/test/syscalls/linux/socket_stream_nonblock.cc deleted file mode 100644 index 74d608741..000000000 --- a/test/syscalls/linux/socket_stream_nonblock.cc +++ /dev/null @@ -1,49 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/syscalls/linux/socket_stream_nonblock.h" - -#include <sys/socket.h> -#include <sys/types.h> -#include <sys/uio.h> -#include <sys/un.h> - -#include "gtest/gtest.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -using ::testing::Le; - -TEST_P(NonBlockingStreamSocketPairTest, SendMsgTooLarge) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - int sndbuf; - socklen_t length = sizeof(sndbuf); - ASSERT_THAT( - getsockopt(sockets->first_fd(), SOL_SOCKET, SO_SNDBUF, &sndbuf, &length), - SyscallSucceeds()); - - // Make the call too large to fit in the send buffer. - const int buffer_size = 3 * sndbuf; - - EXPECT_THAT(SendLargeSendMsg(sockets, buffer_size, false /* reader */), - SyscallSucceedsWithValue(Le(buffer_size))); -} - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_stream_nonblock.h b/test/syscalls/linux/socket_stream_nonblock.h deleted file mode 100644 index c3b7fad91..000000000 --- a/test/syscalls/linux/socket_stream_nonblock.h +++ /dev/null @@ -1,30 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_SYSCALLS_LINUX_SOCKET_STREAM_NONBLOCK_H_ -#define GVISOR_TEST_SYSCALLS_LINUX_SOCKET_STREAM_NONBLOCK_H_ - -#include "test/syscalls/linux/socket_test_util.h" - -namespace gvisor { -namespace testing { - -// Test fixture for tests that apply to pairs of non-blocking connected stream -// sockets. -using NonBlockingStreamSocketPairTest = SocketPairTest; - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_SYSCALLS_LINUX_SOCKET_STREAM_NONBLOCK_H_ diff --git a/test/syscalls/linux/socket_test_util.cc b/test/syscalls/linux/socket_test_util.cc deleted file mode 100644 index 5d3a39868..000000000 --- a/test/syscalls/linux/socket_test_util.cc +++ /dev/null @@ -1,912 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/syscalls/linux/socket_test_util.h" - -#include <arpa/inet.h> -#include <poll.h> -#include <sys/socket.h> - -#include <memory> - -#include "gtest/gtest.h" -#include "absl/memory/memory.h" -#include "absl/strings/str_cat.h" -#include "absl/time/clock.h" -#include "absl/types/optional.h" -#include "test/util/file_descriptor.h" -#include "test/util/posix_error.h" -#include "test/util/temp_path.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { - -Creator<SocketPair> SyscallSocketPairCreator(int domain, int type, - int protocol) { - return [=]() -> PosixErrorOr<std::unique_ptr<FDSocketPair>> { - int pair[2]; - RETURN_ERROR_IF_SYSCALL_FAIL(socketpair(domain, type, protocol, pair)); - MaybeSave(); // Save on successful creation. - return absl::make_unique<FDSocketPair>(pair[0], pair[1]); - }; -} - -Creator<FileDescriptor> SyscallSocketCreator(int domain, int type, - int protocol) { - return [=]() -> PosixErrorOr<std::unique_ptr<FileDescriptor>> { - int fd = 0; - RETURN_ERROR_IF_SYSCALL_FAIL(fd = socket(domain, type, protocol)); - MaybeSave(); // Save on successful creation. - return absl::make_unique<FileDescriptor>(fd); - }; -} - -PosixErrorOr<struct sockaddr_un> UniqueUnixAddr(bool abstract, int domain) { - struct sockaddr_un addr = {}; - std::string path = NewTempAbsPathInDir("/tmp"); - if (path.size() >= sizeof(addr.sun_path)) { - return PosixError(EINVAL, - "Unable to generate a temp path of appropriate length"); - } - - if (abstract) { - // Indicate that the path is in the abstract namespace. - path[0] = 0; - } - memcpy(addr.sun_path, path.c_str(), path.length()); - addr.sun_family = domain; - return addr; -} - -Creator<SocketPair> AcceptBindSocketPairCreator(bool abstract, int domain, - int type, int protocol) { - return [=]() -> PosixErrorOr<std::unique_ptr<AddrFDSocketPair>> { - ASSIGN_OR_RETURN_ERRNO(struct sockaddr_un bind_addr, - UniqueUnixAddr(abstract, domain)); - ASSIGN_OR_RETURN_ERRNO(struct sockaddr_un extra_addr, - UniqueUnixAddr(abstract, domain)); - - int bound; - RETURN_ERROR_IF_SYSCALL_FAIL(bound = socket(domain, type, protocol)); - MaybeSave(); // Successful socket creation. - RETURN_ERROR_IF_SYSCALL_FAIL( - bind(bound, reinterpret_cast<struct sockaddr*>(&bind_addr), - sizeof(bind_addr))); - MaybeSave(); // Successful bind. - RETURN_ERROR_IF_SYSCALL_FAIL(listen(bound, /* backlog = */ 5)); - MaybeSave(); // Successful listen. - - int connected; - RETURN_ERROR_IF_SYSCALL_FAIL(connected = socket(domain, type, protocol)); - MaybeSave(); // Successful socket creation. - RETURN_ERROR_IF_SYSCALL_FAIL( - connect(connected, reinterpret_cast<struct sockaddr*>(&bind_addr), - sizeof(bind_addr))); - MaybeSave(); // Successful connect. - - int accepted; - RETURN_ERROR_IF_SYSCALL_FAIL( - accepted = accept4(bound, nullptr, nullptr, - type & (SOCK_NONBLOCK | SOCK_CLOEXEC))); - MaybeSave(); // Successful connect. - - // Cleanup no longer needed resources. - RETURN_ERROR_IF_SYSCALL_FAIL(close(bound)); - MaybeSave(); // Dropped original socket. - - // Only unlink if path is not in abstract namespace. - if (bind_addr.sun_path[0] != 0) { - RETURN_ERROR_IF_SYSCALL_FAIL(unlink(bind_addr.sun_path)); - MaybeSave(); // Unlinked path. - } - - // accepted is before connected to destruct connected before accepted. - // Destructors for nonstatic member objects are called in the reverse order - // in which they appear in the class declaration. - return absl::make_unique<AddrFDSocketPair>(accepted, connected, bind_addr, - extra_addr); - }; -} - -Creator<SocketPair> FilesystemAcceptBindSocketPairCreator(int domain, int type, - int protocol) { - return AcceptBindSocketPairCreator(/* abstract= */ false, domain, type, - protocol); -} - -Creator<SocketPair> AbstractAcceptBindSocketPairCreator(int domain, int type, - int protocol) { - return AcceptBindSocketPairCreator(/* abstract= */ true, domain, type, - protocol); -} - -Creator<SocketPair> BidirectionalBindSocketPairCreator(bool abstract, - int domain, int type, - int protocol) { - return [=]() -> PosixErrorOr<std::unique_ptr<FDSocketPair>> { - ASSIGN_OR_RETURN_ERRNO(struct sockaddr_un addr1, - UniqueUnixAddr(abstract, domain)); - ASSIGN_OR_RETURN_ERRNO(struct sockaddr_un addr2, - UniqueUnixAddr(abstract, domain)); - - int sock1; - RETURN_ERROR_IF_SYSCALL_FAIL(sock1 = socket(domain, type, protocol)); - MaybeSave(); // Successful socket creation. - RETURN_ERROR_IF_SYSCALL_FAIL( - bind(sock1, reinterpret_cast<struct sockaddr*>(&addr1), sizeof(addr1))); - MaybeSave(); // Successful bind. - - int sock2; - RETURN_ERROR_IF_SYSCALL_FAIL(sock2 = socket(domain, type, protocol)); - MaybeSave(); // Successful socket creation. - RETURN_ERROR_IF_SYSCALL_FAIL( - bind(sock2, reinterpret_cast<struct sockaddr*>(&addr2), sizeof(addr2))); - MaybeSave(); // Successful bind. - - RETURN_ERROR_IF_SYSCALL_FAIL(connect( - sock1, reinterpret_cast<struct sockaddr*>(&addr2), sizeof(addr2))); - MaybeSave(); // Successful connect. - - RETURN_ERROR_IF_SYSCALL_FAIL(connect( - sock2, reinterpret_cast<struct sockaddr*>(&addr1), sizeof(addr1))); - MaybeSave(); // Successful connect. - - // Cleanup no longer needed resources. - - // Only unlink if path is not in abstract namespace. - if (addr1.sun_path[0] != 0) { - RETURN_ERROR_IF_SYSCALL_FAIL(unlink(addr1.sun_path)); - MaybeSave(); // Successful unlink. - } - - // Only unlink if path is not in abstract namespace. - if (addr2.sun_path[0] != 0) { - RETURN_ERROR_IF_SYSCALL_FAIL(unlink(addr2.sun_path)); - MaybeSave(); // Successful unlink. - } - - return absl::make_unique<FDSocketPair>(sock1, sock2); - }; -} - -Creator<SocketPair> FilesystemBidirectionalBindSocketPairCreator(int domain, - int type, - int protocol) { - return BidirectionalBindSocketPairCreator(/* abstract= */ false, domain, type, - protocol); -} - -Creator<SocketPair> AbstractBidirectionalBindSocketPairCreator(int domain, - int type, - int protocol) { - return BidirectionalBindSocketPairCreator(/* abstract= */ true, domain, type, - protocol); -} - -Creator<SocketPair> SocketpairGoferSocketPairCreator(int domain, int type, - int protocol) { - return [=]() -> PosixErrorOr<std::unique_ptr<FDSocketPair>> { - struct sockaddr_un addr = {}; - constexpr char kSocketGoferPath[] = "/socket"; - memcpy(addr.sun_path, kSocketGoferPath, sizeof(kSocketGoferPath)); - addr.sun_family = domain; - - int sock1; - RETURN_ERROR_IF_SYSCALL_FAIL(sock1 = socket(domain, type, protocol)); - MaybeSave(); // Successful socket creation. - RETURN_ERROR_IF_SYSCALL_FAIL(connect( - sock1, reinterpret_cast<struct sockaddr*>(&addr), sizeof(addr))); - MaybeSave(); // Successful connect. - - int sock2; - RETURN_ERROR_IF_SYSCALL_FAIL(sock2 = socket(domain, type, protocol)); - MaybeSave(); // Successful socket creation. - RETURN_ERROR_IF_SYSCALL_FAIL(connect( - sock2, reinterpret_cast<struct sockaddr*>(&addr), sizeof(addr))); - MaybeSave(); // Successful connect. - - // Make and close another socketpair to ensure that the duped ends of the - // first socketpair get closed. - // - // The problem is that there is no way to atomically send and close an FD. - // The closest that we can do is send and then immediately close the FD, - // which is what we do in the gofer. The gofer won't respond to another - // request until the reply is sent and the FD is closed, so forcing the - // gofer to handle another request will ensure that this has happened. - for (int i = 0; i < 2; i++) { - int sock; - RETURN_ERROR_IF_SYSCALL_FAIL(sock = socket(domain, type, protocol)); - RETURN_ERROR_IF_SYSCALL_FAIL(connect( - sock, reinterpret_cast<struct sockaddr*>(&addr), sizeof(addr))); - RETURN_ERROR_IF_SYSCALL_FAIL(close(sock)); - } - - return absl::make_unique<FDSocketPair>(sock1, sock2); - }; -} - -Creator<SocketPair> SocketpairGoferFileSocketPairCreator(int flags) { - return [=]() -> PosixErrorOr<std::unique_ptr<FDSocketPair>> { - constexpr char kSocketGoferPath[] = "/socket"; - - int sock1; - RETURN_ERROR_IF_SYSCALL_FAIL(sock1 = - open(kSocketGoferPath, O_RDWR | flags)); - MaybeSave(); // Successful socket creation. - - int sock2; - RETURN_ERROR_IF_SYSCALL_FAIL(sock2 = - open(kSocketGoferPath, O_RDWR | flags)); - MaybeSave(); // Successful socket creation. - - return absl::make_unique<FDSocketPair>(sock1, sock2); - }; -} - -Creator<SocketPair> UnboundSocketPairCreator(bool abstract, int domain, - int type, int protocol) { - return [=]() -> PosixErrorOr<std::unique_ptr<AddrFDSocketPair>> { - ASSIGN_OR_RETURN_ERRNO(struct sockaddr_un addr1, - UniqueUnixAddr(abstract, domain)); - ASSIGN_OR_RETURN_ERRNO(struct sockaddr_un addr2, - UniqueUnixAddr(abstract, domain)); - - int sock1; - RETURN_ERROR_IF_SYSCALL_FAIL(sock1 = socket(domain, type, protocol)); - MaybeSave(); // Successful socket creation. - int sock2; - RETURN_ERROR_IF_SYSCALL_FAIL(sock2 = socket(domain, type, protocol)); - MaybeSave(); // Successful socket creation. - return absl::make_unique<AddrFDSocketPair>(sock1, sock2, addr1, addr2); - }; -} - -Creator<SocketPair> FilesystemUnboundSocketPairCreator(int domain, int type, - int protocol) { - return UnboundSocketPairCreator(/* abstract= */ false, domain, type, - protocol); -} - -Creator<SocketPair> AbstractUnboundSocketPairCreator(int domain, int type, - int protocol) { - return UnboundSocketPairCreator(/* abstract= */ true, domain, type, protocol); -} - -void LocalhostAddr(struct sockaddr_in* addr, bool dual_stack) { - addr->sin_family = AF_INET; - addr->sin_port = htons(0); - inet_pton(AF_INET, "127.0.0.1", - reinterpret_cast<void*>(&addr->sin_addr.s_addr)); -} - -void LocalhostAddr(struct sockaddr_in6* addr, bool dual_stack) { - addr->sin6_family = AF_INET6; - addr->sin6_port = htons(0); - if (dual_stack) { - inet_pton(AF_INET6, "::ffff:127.0.0.1", - reinterpret_cast<void*>(&addr->sin6_addr.s6_addr)); - } else { - inet_pton(AF_INET6, "::1", - reinterpret_cast<void*>(&addr->sin6_addr.s6_addr)); - } - addr->sin6_scope_id = 0; -} - -template <typename T> -PosixErrorOr<T> BindIP(int fd, bool dual_stack) { - T addr = {}; - LocalhostAddr(&addr, dual_stack); - RETURN_ERROR_IF_SYSCALL_FAIL( - bind(fd, reinterpret_cast<struct sockaddr*>(&addr), sizeof(addr))); - socklen_t addrlen = sizeof(addr); - RETURN_ERROR_IF_SYSCALL_FAIL( - getsockname(fd, reinterpret_cast<struct sockaddr*>(&addr), &addrlen)); - return addr; -} - -template <typename T> -PosixErrorOr<T> TCPBindAndListen(int fd, bool dual_stack) { - ASSIGN_OR_RETURN_ERRNO(T addr, BindIP<T>(fd, dual_stack)); - RETURN_ERROR_IF_SYSCALL_FAIL(listen(fd, /* backlog = */ 5)); - return addr; -} - -template <typename T> -PosixErrorOr<std::unique_ptr<AddrFDSocketPair>> -CreateTCPConnectAcceptSocketPair(int bound, int connected, int type, - bool dual_stack, T bind_addr) { - int connect_result = 0; - RETURN_ERROR_IF_SYSCALL_FAIL( - (connect_result = RetryEINTR(connect)( - connected, reinterpret_cast<struct sockaddr*>(&bind_addr), - sizeof(bind_addr))) == -1 && - errno == EINPROGRESS - ? 0 - : connect_result); - MaybeSave(); // Successful connect. - - if (connect_result == -1) { - struct pollfd connect_poll = {connected, POLLOUT | POLLERR | POLLHUP, 0}; - RETURN_ERROR_IF_SYSCALL_FAIL(RetryEINTR(poll)(&connect_poll, 1, 0)); - int error = 0; - socklen_t errorlen = sizeof(error); - RETURN_ERROR_IF_SYSCALL_FAIL( - getsockopt(connected, SOL_SOCKET, SO_ERROR, &error, &errorlen)); - errno = error; - RETURN_ERROR_IF_SYSCALL_FAIL( - /* connect */ error == 0 ? 0 : -1); - } - - int accepted = -1; - struct pollfd accept_poll = {bound, POLLIN, 0}; - while (accepted == -1) { - RETURN_ERROR_IF_SYSCALL_FAIL(RetryEINTR(poll)(&accept_poll, 1, 0)); - - RETURN_ERROR_IF_SYSCALL_FAIL( - (accepted = RetryEINTR(accept4)( - bound, nullptr, nullptr, type & (SOCK_NONBLOCK | SOCK_CLOEXEC))) == - -1 && - errno == EAGAIN - ? 0 - : accepted); - } - MaybeSave(); // Successful accept. - - // FIXME(b/110484944) - if (connect_result == -1) { - absl::SleepFor(absl::Seconds(1)); - } - - T extra_addr = {}; - LocalhostAddr(&extra_addr, dual_stack); - return absl::make_unique<AddrFDSocketPair>(connected, accepted, bind_addr, - extra_addr); -} - -template <typename T> -PosixErrorOr<std::unique_ptr<AddrFDSocketPair>> CreateTCPAcceptBindSocketPair( - int bound, int connected, int type, bool dual_stack) { - ASSIGN_OR_RETURN_ERRNO(T bind_addr, TCPBindAndListen<T>(bound, dual_stack)); - - auto result = CreateTCPConnectAcceptSocketPair(bound, connected, type, - dual_stack, bind_addr); - - // Cleanup no longer needed resources. - RETURN_ERROR_IF_SYSCALL_FAIL(close(bound)); - MaybeSave(); // Successful close. - - return result; -} - -Creator<SocketPair> TCPAcceptBindSocketPairCreator(int domain, int type, - int protocol, - bool dual_stack) { - return [=]() -> PosixErrorOr<std::unique_ptr<AddrFDSocketPair>> { - int bound; - RETURN_ERROR_IF_SYSCALL_FAIL(bound = socket(domain, type, protocol)); - MaybeSave(); // Successful socket creation. - - int connected; - RETURN_ERROR_IF_SYSCALL_FAIL(connected = socket(domain, type, protocol)); - MaybeSave(); // Successful socket creation. - - if (domain == AF_INET) { - return CreateTCPAcceptBindSocketPair<sockaddr_in>(bound, connected, type, - dual_stack); - } - return CreateTCPAcceptBindSocketPair<sockaddr_in6>(bound, connected, type, - dual_stack); - }; -} - -Creator<SocketPair> TCPAcceptBindPersistentListenerSocketPairCreator( - int domain, int type, int protocol, bool dual_stack) { - // These are lazily initialized below, on the first call to the returned - // lambda. These values are private to each returned lambda, but shared across - // invocations of a specific lambda. - // - // The sharing allows pairs created with the same parameters to share a - // listener. This prevents future connects from failing if the connecting - // socket selects a port which had previously been used by a listening socket - // that still has some connections in TIME-WAIT. - // - // The lazy initialization is to avoid creating sockets during parameter - // enumeration. This is important because parameters are enumerated during the - // build process where networking may not be available. - auto listener = std::make_shared<absl::optional<int>>(absl::optional<int>()); - auto addr4 = std::make_shared<absl::optional<sockaddr_in>>( - absl::optional<sockaddr_in>()); - auto addr6 = std::make_shared<absl::optional<sockaddr_in6>>( - absl::optional<sockaddr_in6>()); - - return [=]() -> PosixErrorOr<std::unique_ptr<AddrFDSocketPair>> { - int connected; - RETURN_ERROR_IF_SYSCALL_FAIL(connected = socket(domain, type, protocol)); - MaybeSave(); // Successful socket creation. - - // Share the listener across invocations. - if (!listener->has_value()) { - int fd = socket(domain, type, protocol); - if (fd < 0) { - return PosixError(errno, absl::StrCat("socket(", domain, ", ", type, - ", ", protocol, ")")); - } - listener->emplace(fd); - MaybeSave(); // Successful socket creation. - } - - // Bind the listener once, but create a new connect/accept pair each - // time. - if (domain == AF_INET) { - if (!addr4->has_value()) { - addr4->emplace( - TCPBindAndListen<sockaddr_in>(listener->value(), dual_stack) - .ValueOrDie()); - } - return CreateTCPConnectAcceptSocketPair(listener->value(), connected, - type, dual_stack, addr4->value()); - } - if (!addr6->has_value()) { - addr6->emplace( - TCPBindAndListen<sockaddr_in6>(listener->value(), dual_stack) - .ValueOrDie()); - } - return CreateTCPConnectAcceptSocketPair(listener->value(), connected, type, - dual_stack, addr6->value()); - }; -} - -template <typename T> -PosixErrorOr<std::unique_ptr<AddrFDSocketPair>> CreateUDPBoundSocketPair( - int sock1, int sock2, int type, bool dual_stack) { - ASSIGN_OR_RETURN_ERRNO(T addr1, BindIP<T>(sock1, dual_stack)); - ASSIGN_OR_RETURN_ERRNO(T addr2, BindIP<T>(sock2, dual_stack)); - - return absl::make_unique<AddrFDSocketPair>(sock1, sock2, addr1, addr2); -} - -template <typename T> -PosixErrorOr<std::unique_ptr<AddrFDSocketPair>> -CreateUDPBidirectionalBindSocketPair(int sock1, int sock2, int type, - bool dual_stack) { - ASSIGN_OR_RETURN_ERRNO( - auto socks, CreateUDPBoundSocketPair<T>(sock1, sock2, type, dual_stack)); - - // Connect sock1 to sock2. - RETURN_ERROR_IF_SYSCALL_FAIL(connect(socks->first_fd(), socks->second_addr(), - socks->second_addr_size())); - MaybeSave(); // Successful connection. - - // Connect sock2 to sock1. - RETURN_ERROR_IF_SYSCALL_FAIL(connect(socks->second_fd(), socks->first_addr(), - socks->first_addr_size())); - MaybeSave(); // Successful connection. - - return socks; -} - -Creator<SocketPair> UDPBidirectionalBindSocketPairCreator(int domain, int type, - int protocol, - bool dual_stack) { - return [=]() -> PosixErrorOr<std::unique_ptr<AddrFDSocketPair>> { - int sock1; - RETURN_ERROR_IF_SYSCALL_FAIL(sock1 = socket(domain, type, protocol)); - MaybeSave(); // Successful socket creation. - - int sock2; - RETURN_ERROR_IF_SYSCALL_FAIL(sock2 = socket(domain, type, protocol)); - MaybeSave(); // Successful socket creation. - - if (domain == AF_INET) { - return CreateUDPBidirectionalBindSocketPair<sockaddr_in>( - sock1, sock2, type, dual_stack); - } - return CreateUDPBidirectionalBindSocketPair<sockaddr_in6>(sock1, sock2, - type, dual_stack); - }; -} - -Creator<SocketPair> UDPUnboundSocketPairCreator(int domain, int type, - int protocol, bool dual_stack) { - return [=]() -> PosixErrorOr<std::unique_ptr<FDSocketPair>> { - int sock1; - RETURN_ERROR_IF_SYSCALL_FAIL(sock1 = socket(domain, type, protocol)); - MaybeSave(); // Successful socket creation. - - int sock2; - RETURN_ERROR_IF_SYSCALL_FAIL(sock2 = socket(domain, type, protocol)); - MaybeSave(); // Successful socket creation. - - return absl::make_unique<FDSocketPair>(sock1, sock2); - }; -} - -SocketPairKind Reversed(SocketPairKind const& base) { - auto const& creator = base.creator; - return SocketPairKind{ - absl::StrCat("reversed ", base.description), base.domain, base.type, - base.protocol, - [creator]() -> PosixErrorOr<std::unique_ptr<ReversedSocketPair>> { - ASSIGN_OR_RETURN_ERRNO(auto creator_value, creator()); - return absl::make_unique<ReversedSocketPair>(std::move(creator_value)); - }}; -} - -Creator<FileDescriptor> UnboundSocketCreator(int domain, int type, - int protocol) { - return [=]() -> PosixErrorOr<std::unique_ptr<FileDescriptor>> { - int sock; - RETURN_ERROR_IF_SYSCALL_FAIL(sock = socket(domain, type, protocol)); - MaybeSave(); // Successful socket creation. - - return absl::make_unique<FileDescriptor>(sock); - }; -} - -std::vector<SocketPairKind> IncludeReversals(std::vector<SocketPairKind> vec) { - return ApplyVecToVec<SocketPairKind>(std::vector<Middleware>{NoOp, Reversed}, - vec); -} - -SocketPairKind NoOp(SocketPairKind const& base) { return base; } - -void TransferTest(int fd1, int fd2) { - char buf1[20]; - RandomizeBuffer(buf1, sizeof(buf1)); - ASSERT_THAT(WriteFd(fd1, buf1, sizeof(buf1)), - SyscallSucceedsWithValue(sizeof(buf1))); - - char buf2[20]; - ASSERT_THAT(ReadFd(fd2, buf2, sizeof(buf2)), - SyscallSucceedsWithValue(sizeof(buf2))); - - EXPECT_EQ(0, memcmp(buf1, buf2, sizeof(buf1))); - - RandomizeBuffer(buf1, sizeof(buf1)); - ASSERT_THAT(WriteFd(fd2, buf1, sizeof(buf1)), - SyscallSucceedsWithValue(sizeof(buf1))); - - ASSERT_THAT(ReadFd(fd1, buf2, sizeof(buf2)), - SyscallSucceedsWithValue(sizeof(buf2))); - - EXPECT_EQ(0, memcmp(buf1, buf2, sizeof(buf1))); -} - -// Initializes the given buffer with random data. -void RandomizeBuffer(char* ptr, size_t len) { - uint32_t seed = time(nullptr); - for (size_t i = 0; i < len; ++i) { - ptr[i] = static_cast<char>(rand_r(&seed)); - } -} - -size_t CalculateUnixSockAddrLen(const char* sun_path) { - // Abstract addresses always return the full length. - if (sun_path[0] == 0) { - return sizeof(sockaddr_un); - } - // Filesystem addresses use the address length plus the 2 byte sun_family - // and null terminator. - return strlen(sun_path) + 3; -} - -struct sockaddr_storage AddrFDSocketPair::to_storage(const sockaddr_un& addr) { - struct sockaddr_storage addr_storage = {}; - memcpy(&addr_storage, &addr, sizeof(addr)); - return addr_storage; -} - -struct sockaddr_storage AddrFDSocketPair::to_storage(const sockaddr_in& addr) { - struct sockaddr_storage addr_storage = {}; - memcpy(&addr_storage, &addr, sizeof(addr)); - return addr_storage; -} - -struct sockaddr_storage AddrFDSocketPair::to_storage(const sockaddr_in6& addr) { - struct sockaddr_storage addr_storage = {}; - memcpy(&addr_storage, &addr, sizeof(addr)); - return addr_storage; -} - -SocketKind SimpleSocket(int fam, int type, int proto) { - return SocketKind{ - absl::StrCat("Family ", fam, ", type ", type, ", proto ", proto), fam, - type, proto, SyscallSocketCreator(fam, type, proto)}; -} - -ssize_t SendLargeSendMsg(const std::unique_ptr<SocketPair>& sockets, - size_t size, bool reader) { - const int rfd = sockets->second_fd(); - ScopedThread t([rfd, size, reader] { - if (!reader) { - return; - } - - // Potentially too many syscalls in the loop. - const DisableSave ds; - - std::vector<char> buf(size); - size_t total = 0; - - while (total < size) { - int ret = read(rfd, buf.data(), buf.size()); - if (ret == -1 && errno == EAGAIN) { - continue; - } - if (ret > 0) { - total += ret; - } - - // Assert to return on first failure. - ASSERT_THAT(ret, SyscallSucceeds()); - } - }); - - std::vector<char> buf(size); - - struct iovec iov = {}; - iov.iov_base = buf.data(); - iov.iov_len = buf.size(); - - struct msghdr msg = {}; - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - return RetryEINTR(sendmsg)(sockets->first_fd(), &msg, 0); -} - -namespace internal { -PosixErrorOr<int> TryPortAvailable(int port, AddressFamily family, - SocketType type, bool reuse_addr) { - if (port < 0) { - return PosixError(EINVAL, "Invalid port"); - } - - // Both Ipv6 and Dualstack are AF_INET6. - int sock_fam = (family == AddressFamily::kIpv4 ? AF_INET : AF_INET6); - int sock_type = (type == SocketType::kTcp ? SOCK_STREAM : SOCK_DGRAM); - ASSIGN_OR_RETURN_ERRNO(auto fd, Socket(sock_fam, sock_type, 0)); - - if (reuse_addr) { - int one = 1; - RETURN_ERROR_IF_SYSCALL_FAIL( - setsockopt(fd.get(), SOL_SOCKET, SO_REUSEADDR, &one, sizeof(one))); - } - - // Try to bind. - sockaddr_storage storage = {}; - int storage_size = 0; - if (family == AddressFamily::kIpv4) { - sockaddr_in* addr = reinterpret_cast<sockaddr_in*>(&storage); - storage_size = sizeof(*addr); - addr->sin_family = AF_INET; - addr->sin_port = htons(port); - addr->sin_addr.s_addr = htonl(INADDR_ANY); - } else { - sockaddr_in6* addr = reinterpret_cast<sockaddr_in6*>(&storage); - storage_size = sizeof(*addr); - addr->sin6_family = AF_INET6; - addr->sin6_port = htons(port); - if (family == AddressFamily::kDualStack) { - inet_pton(AF_INET6, "::ffff:0.0.0.0", - reinterpret_cast<void*>(&addr->sin6_addr.s6_addr)); - } else { - addr->sin6_addr = in6addr_any; - } - } - - RETURN_ERROR_IF_SYSCALL_FAIL( - bind(fd.get(), reinterpret_cast<sockaddr*>(&storage), storage_size)); - - // If the user specified 0 as the port, we will return the port that the - // kernel gave us, otherwise we will validate that this socket bound to the - // requested port. - sockaddr_storage bound_storage = {}; - socklen_t bound_storage_size = sizeof(bound_storage); - RETURN_ERROR_IF_SYSCALL_FAIL( - getsockname(fd.get(), reinterpret_cast<sockaddr*>(&bound_storage), - &bound_storage_size)); - - int available_port = -1; - if (bound_storage.ss_family == AF_INET) { - sockaddr_in* addr = reinterpret_cast<sockaddr_in*>(&bound_storage); - available_port = ntohs(addr->sin_port); - } else if (bound_storage.ss_family == AF_INET6) { - sockaddr_in6* addr = reinterpret_cast<sockaddr_in6*>(&bound_storage); - available_port = ntohs(addr->sin6_port); - } else { - return PosixError(EPROTOTYPE, "Getsockname returned invalid family"); - } - - // If we requested a specific port make sure our bound port is that port. - if (port != 0 && available_port != port) { - return PosixError(EINVAL, - absl::StrCat("Bound port ", available_port, - " was not equal to requested port ", port)); - } - - // If we're trying to do a TCP socket, let's also try to listen. - if (type == SocketType::kTcp) { - RETURN_ERROR_IF_SYSCALL_FAIL(listen(fd.get(), 1)); - } - - return available_port; -} -} // namespace internal - -PosixErrorOr<int> SendMsg(int sock, msghdr* msg, char buf[], int buf_size) { - struct iovec iov; - iov.iov_base = buf; - iov.iov_len = buf_size; - msg->msg_iov = &iov; - msg->msg_iovlen = 1; - - int ret; - RETURN_ERROR_IF_SYSCALL_FAIL(ret = RetryEINTR(sendmsg)(sock, msg, 0)); - return ret; -} - -void RecvNoData(int sock) { - char data = 0; - struct iovec iov; - iov.iov_base = &data; - iov.iov_len = 1; - struct msghdr msg = {}; - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - ASSERT_THAT(RetryEINTR(recvmsg)(sock, &msg, MSG_DONTWAIT), - SyscallFailsWithErrno(EAGAIN)); -} - -TestAddress V4Any() { - TestAddress t("V4Any"); - t.addr.ss_family = AF_INET; - t.addr_len = sizeof(sockaddr_in); - reinterpret_cast<sockaddr_in*>(&t.addr)->sin_addr.s_addr = htonl(INADDR_ANY); - return t; -} - -TestAddress V4Loopback() { - TestAddress t("V4Loopback"); - t.addr.ss_family = AF_INET; - t.addr_len = sizeof(sockaddr_in); - reinterpret_cast<sockaddr_in*>(&t.addr)->sin_addr.s_addr = - htonl(INADDR_LOOPBACK); - return t; -} - -TestAddress V4MappedAny() { - TestAddress t("V4MappedAny"); - t.addr.ss_family = AF_INET6; - t.addr_len = sizeof(sockaddr_in6); - inet_pton(AF_INET6, "::ffff:0.0.0.0", - reinterpret_cast<sockaddr_in6*>(&t.addr)->sin6_addr.s6_addr); - return t; -} - -TestAddress V4MappedLoopback() { - TestAddress t("V4MappedLoopback"); - t.addr.ss_family = AF_INET6; - t.addr_len = sizeof(sockaddr_in6); - inet_pton(AF_INET6, "::ffff:127.0.0.1", - reinterpret_cast<sockaddr_in6*>(&t.addr)->sin6_addr.s6_addr); - return t; -} - -TestAddress V4Multicast() { - TestAddress t("V4Multicast"); - t.addr.ss_family = AF_INET; - t.addr_len = sizeof(sockaddr_in); - reinterpret_cast<sockaddr_in*>(&t.addr)->sin_addr.s_addr = - inet_addr(kMulticastAddress); - return t; -} - -TestAddress V4Broadcast() { - TestAddress t("V4Broadcast"); - t.addr.ss_family = AF_INET; - t.addr_len = sizeof(sockaddr_in); - reinterpret_cast<sockaddr_in*>(&t.addr)->sin_addr.s_addr = - htonl(INADDR_BROADCAST); - return t; -} - -TestAddress V6Any() { - TestAddress t("V6Any"); - t.addr.ss_family = AF_INET6; - t.addr_len = sizeof(sockaddr_in6); - reinterpret_cast<sockaddr_in6*>(&t.addr)->sin6_addr = in6addr_any; - return t; -} - -TestAddress V6Loopback() { - TestAddress t("V6Loopback"); - t.addr.ss_family = AF_INET6; - t.addr_len = sizeof(sockaddr_in6); - reinterpret_cast<sockaddr_in6*>(&t.addr)->sin6_addr = in6addr_loopback; - return t; -} - -// Checksum computes the internet checksum of a buffer. -uint16_t Checksum(uint16_t* buf, ssize_t buf_size) { - // Add up the 16-bit values in the buffer. - uint32_t total = 0; - for (unsigned int i = 0; i < buf_size; i += sizeof(*buf)) { - total += *buf; - buf++; - } - - // If buf has an odd size, add the remaining byte. - if (buf_size % 2) { - total += *(reinterpret_cast<unsigned char*>(buf) - 1); - } - - // This carries any bits past the lower 16 until everything fits in 16 bits. - while (total >> 16) { - uint16_t lower = total & 0xffff; - uint16_t upper = total >> 16; - total = lower + upper; - } - - return ~total; -} - -uint16_t IPChecksum(struct iphdr ip) { - return Checksum(reinterpret_cast<uint16_t*>(&ip), sizeof(ip)); -} - -// The pseudo-header defined in RFC 768 for calculating the UDP checksum. -struct udp_pseudo_hdr { - uint32_t srcip; - uint32_t destip; - char zero; - char protocol; - uint16_t udplen; -}; - -uint16_t UDPChecksum(struct iphdr iphdr, struct udphdr udphdr, - const char* payload, ssize_t payload_len) { - struct udp_pseudo_hdr phdr = {}; - phdr.srcip = iphdr.saddr; - phdr.destip = iphdr.daddr; - phdr.zero = 0; - phdr.protocol = IPPROTO_UDP; - phdr.udplen = udphdr.len; - - ssize_t buf_size = sizeof(phdr) + sizeof(udphdr) + payload_len; - char* buf = static_cast<char*>(malloc(buf_size)); - memcpy(buf, &phdr, sizeof(phdr)); - memcpy(buf + sizeof(phdr), &udphdr, sizeof(udphdr)); - memcpy(buf + sizeof(phdr) + sizeof(udphdr), payload, payload_len); - - uint16_t csum = Checksum(reinterpret_cast<uint16_t*>(buf), buf_size); - free(buf); - return csum; -} - -uint16_t ICMPChecksum(struct icmphdr icmphdr, const char* payload, - ssize_t payload_len) { - ssize_t buf_size = sizeof(icmphdr) + payload_len; - char* buf = static_cast<char*>(malloc(buf_size)); - memcpy(buf, &icmphdr, sizeof(icmphdr)); - memcpy(buf + sizeof(icmphdr), payload, payload_len); - - uint16_t csum = Checksum(reinterpret_cast<uint16_t*>(buf), buf_size); - free(buf); - return csum; -} - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_test_util.h b/test/syscalls/linux/socket_test_util.h deleted file mode 100644 index 734b48b96..000000000 --- a/test/syscalls/linux/socket_test_util.h +++ /dev/null @@ -1,518 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_SYSCALLS_SOCKET_TEST_UTIL_H_ -#define GVISOR_TEST_SYSCALLS_SOCKET_TEST_UTIL_H_ - -#include <errno.h> -#include <netinet/ip.h> -#include <netinet/ip_icmp.h> -#include <netinet/udp.h> -#include <sys/socket.h> -#include <sys/types.h> -#include <sys/un.h> - -#include <functional> -#include <memory> -#include <string> -#include <utility> -#include <vector> - -#include "gtest/gtest.h" -#include "absl/strings/str_format.h" -#include "test/util/file_descriptor.h" -#include "test/util/posix_error.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -// Wrapper for socket(2) that returns a FileDescriptor. -inline PosixErrorOr<FileDescriptor> Socket(int family, int type, int protocol) { - int fd = socket(family, type, protocol); - MaybeSave(); - if (fd < 0) { - return PosixError( - errno, absl::StrFormat("socket(%d, %d, %d)", family, type, protocol)); - } - return FileDescriptor(fd); -} - -// Wrapper for accept(2) that returns a FileDescriptor. -inline PosixErrorOr<FileDescriptor> Accept(int sockfd, sockaddr* addr, - socklen_t* addrlen) { - int fd = RetryEINTR(accept)(sockfd, addr, addrlen); - MaybeSave(); - if (fd < 0) { - return PosixError( - errno, absl::StrFormat("accept(%d, %p, %p)", sockfd, addr, addrlen)); - } - return FileDescriptor(fd); -} - -// Wrapper for accept4(2) that returns a FileDescriptor. -inline PosixErrorOr<FileDescriptor> Accept4(int sockfd, sockaddr* addr, - socklen_t* addrlen, int flags) { - int fd = RetryEINTR(accept4)(sockfd, addr, addrlen, flags); - MaybeSave(); - if (fd < 0) { - return PosixError(errno, absl::StrFormat("accept4(%d, %p, %p, %#x)", sockfd, - addr, addrlen, flags)); - } - return FileDescriptor(fd); -} - -inline ssize_t SendFd(int fd, void* buf, size_t count, int flags) { - return internal::ApplyFileIoSyscall( - [&](size_t completed) { - return sendto(fd, static_cast<char*>(buf) + completed, - count - completed, flags, nullptr, 0); - }, - count); -} - -PosixErrorOr<struct sockaddr_un> UniqueUnixAddr(bool abstract, int domain); - -// A Creator<T> is a function that attempts to create and return a new T. (This -// is copy/pasted from cloud/gvisor/api/sandbox_util.h and is just duplicated -// here for clarity.) -template <typename T> -using Creator = std::function<PosixErrorOr<std::unique_ptr<T>>()>; - -// A SocketPair represents a pair of socket file descriptors owned by the -// SocketPair. -class SocketPair { - public: - virtual ~SocketPair() = default; - - virtual int first_fd() const = 0; - virtual int second_fd() const = 0; - virtual int release_first_fd() = 0; - virtual int release_second_fd() = 0; - virtual const struct sockaddr* first_addr() const = 0; - virtual const struct sockaddr* second_addr() const = 0; - virtual size_t first_addr_size() const = 0; - virtual size_t second_addr_size() const = 0; - virtual size_t first_addr_len() const = 0; - virtual size_t second_addr_len() const = 0; -}; - -// A FDSocketPair is a SocketPair that consists of only a pair of file -// descriptors. -class FDSocketPair : public SocketPair { - public: - FDSocketPair(int first_fd, int second_fd) - : first_(first_fd), second_(second_fd) {} - FDSocketPair(std::unique_ptr<FileDescriptor> first_fd, - std::unique_ptr<FileDescriptor> second_fd) - : first_(first_fd->release()), second_(second_fd->release()) {} - - int first_fd() const override { return first_.get(); } - int second_fd() const override { return second_.get(); } - int release_first_fd() override { return first_.release(); } - int release_second_fd() override { return second_.release(); } - const struct sockaddr* first_addr() const override { return nullptr; } - const struct sockaddr* second_addr() const override { return nullptr; } - size_t first_addr_size() const override { return 0; } - size_t second_addr_size() const override { return 0; } - size_t first_addr_len() const override { return 0; } - size_t second_addr_len() const override { return 0; } - - private: - FileDescriptor first_; - FileDescriptor second_; -}; - -// CalculateUnixSockAddrLen calculates the length returned by recvfrom(2) and -// recvmsg(2) for Unix sockets. -size_t CalculateUnixSockAddrLen(const char* sun_path); - -// A AddrFDSocketPair is a SocketPair that consists of a pair of file -// descriptors in addition to a pair of socket addresses. -class AddrFDSocketPair : public SocketPair { - public: - AddrFDSocketPair(int first_fd, int second_fd, - const struct sockaddr_un& first_address, - const struct sockaddr_un& second_address) - : first_(first_fd), - second_(second_fd), - first_addr_(to_storage(first_address)), - second_addr_(to_storage(second_address)), - first_len_(CalculateUnixSockAddrLen(first_address.sun_path)), - second_len_(CalculateUnixSockAddrLen(second_address.sun_path)), - first_size_(sizeof(first_address)), - second_size_(sizeof(second_address)) {} - - AddrFDSocketPair(int first_fd, int second_fd, - const struct sockaddr_in& first_address, - const struct sockaddr_in& second_address) - : first_(first_fd), - second_(second_fd), - first_addr_(to_storage(first_address)), - second_addr_(to_storage(second_address)), - first_len_(sizeof(first_address)), - second_len_(sizeof(second_address)), - first_size_(sizeof(first_address)), - second_size_(sizeof(second_address)) {} - - AddrFDSocketPair(int first_fd, int second_fd, - const struct sockaddr_in6& first_address, - const struct sockaddr_in6& second_address) - : first_(first_fd), - second_(second_fd), - first_addr_(to_storage(first_address)), - second_addr_(to_storage(second_address)), - first_len_(sizeof(first_address)), - second_len_(sizeof(second_address)), - first_size_(sizeof(first_address)), - second_size_(sizeof(second_address)) {} - - int first_fd() const override { return first_.get(); } - int second_fd() const override { return second_.get(); } - int release_first_fd() override { return first_.release(); } - int release_second_fd() override { return second_.release(); } - const struct sockaddr* first_addr() const override { - return reinterpret_cast<const struct sockaddr*>(&first_addr_); - } - const struct sockaddr* second_addr() const override { - return reinterpret_cast<const struct sockaddr*>(&second_addr_); - } - size_t first_addr_size() const override { return first_size_; } - size_t second_addr_size() const override { return second_size_; } - size_t first_addr_len() const override { return first_len_; } - size_t second_addr_len() const override { return second_len_; } - - private: - // to_storage coverts a sockaddr_* to a sockaddr_storage. - static struct sockaddr_storage to_storage(const sockaddr_un& addr); - static struct sockaddr_storage to_storage(const sockaddr_in& addr); - static struct sockaddr_storage to_storage(const sockaddr_in6& addr); - - FileDescriptor first_; - FileDescriptor second_; - const struct sockaddr_storage first_addr_; - const struct sockaddr_storage second_addr_; - const size_t first_len_; - const size_t second_len_; - const size_t first_size_; - const size_t second_size_; -}; - -// SyscallSocketPairCreator returns a Creator<SocketPair> that obtains file -// descriptors by invoking the socketpair() syscall. -Creator<SocketPair> SyscallSocketPairCreator(int domain, int type, - int protocol); - -// SyscallSocketCreator returns a Creator<FileDescriptor> that obtains a file -// descriptor by invoking the socket() syscall. -Creator<FileDescriptor> SyscallSocketCreator(int domain, int type, - int protocol); - -// FilesystemBidirectionalBindSocketPairCreator returns a Creator<SocketPair> -// that obtains file descriptors by invoking the bind() and connect() syscalls -// on filesystem paths. Only works for DGRAM sockets. -Creator<SocketPair> FilesystemBidirectionalBindSocketPairCreator(int domain, - int type, - int protocol); - -// AbstractBidirectionalBindSocketPairCreator returns a Creator<SocketPair> that -// obtains file descriptors by invoking the bind() and connect() syscalls on -// abstract namespace paths. Only works for DGRAM sockets. -Creator<SocketPair> AbstractBidirectionalBindSocketPairCreator(int domain, - int type, - int protocol); - -// SocketpairGoferSocketPairCreator returns a Creator<SocketPair> that -// obtains file descriptors by connect() syscalls on two sockets with socketpair -// gofer paths. -Creator<SocketPair> SocketpairGoferSocketPairCreator(int domain, int type, - int protocol); - -// SocketpairGoferFileSocketPairCreator returns a Creator<SocketPair> that -// obtains file descriptors by open() syscalls on socketpair gofer paths. -Creator<SocketPair> SocketpairGoferFileSocketPairCreator(int flags); - -// FilesystemAcceptBindSocketPairCreator returns a Creator<SocketPair> that -// obtains file descriptors by invoking the accept() and bind() syscalls on -// a filesystem path. Only works for STREAM and SEQPACKET sockets. -Creator<SocketPair> FilesystemAcceptBindSocketPairCreator(int domain, int type, - int protocol); - -// AbstractAcceptBindSocketPairCreator returns a Creator<SocketPair> that -// obtains file descriptors by invoking the accept() and bind() syscalls on a -// abstract namespace path. Only works for STREAM and SEQPACKET sockets. -Creator<SocketPair> AbstractAcceptBindSocketPairCreator(int domain, int type, - int protocol); - -// FilesystemUnboundSocketPairCreator returns a Creator<SocketPair> that obtains -// file descriptors by invoking the socket() syscall and generates a filesystem -// path for binding. -Creator<SocketPair> FilesystemUnboundSocketPairCreator(int domain, int type, - int protocol); - -// AbstractUnboundSocketPairCreator returns a Creator<SocketPair> that obtains -// file descriptors by invoking the socket() syscall and generates an abstract -// path for binding. -Creator<SocketPair> AbstractUnboundSocketPairCreator(int domain, int type, - int protocol); - -// TCPAcceptBindSocketPairCreator returns a Creator<SocketPair> that obtains -// file descriptors by invoking the accept() and bind() syscalls on TCP sockets. -Creator<SocketPair> TCPAcceptBindSocketPairCreator(int domain, int type, - int protocol, - bool dual_stack); - -// TCPAcceptBindPersistentListenerSocketPairCreator is like -// TCPAcceptBindSocketPairCreator, except it uses the same listening socket to -// create all SocketPairs. -Creator<SocketPair> TCPAcceptBindPersistentListenerSocketPairCreator( - int domain, int type, int protocol, bool dual_stack); - -// UDPBidirectionalBindSocketPairCreator returns a Creator<SocketPair> that -// obtains file descriptors by invoking the bind() and connect() syscalls on UDP -// sockets. -Creator<SocketPair> UDPBidirectionalBindSocketPairCreator(int domain, int type, - int protocol, - bool dual_stack); - -// UDPUnboundSocketPairCreator returns a Creator<SocketPair> that obtains file -// descriptors by creating UDP sockets. -Creator<SocketPair> UDPUnboundSocketPairCreator(int domain, int type, - int protocol, bool dual_stack); - -// UnboundSocketCreator returns a Creator<FileDescriptor> that obtains a file -// descriptor by creating a socket. -Creator<FileDescriptor> UnboundSocketCreator(int domain, int type, - int protocol); - -// A SocketPairKind couples a human-readable description of a socket pair with -// a function that creates such a socket pair. -struct SocketPairKind { - std::string description; - int domain; - int type; - int protocol; - Creator<SocketPair> creator; - - // Create creates a socket pair of this kind. - PosixErrorOr<std::unique_ptr<SocketPair>> Create() const { return creator(); } -}; - -// A SocketKind couples a human-readable description of a socket with -// a function that creates such a socket. -struct SocketKind { - std::string description; - int domain; - int type; - int protocol; - Creator<FileDescriptor> creator; - - // Create creates a socket pair of this kind. - PosixErrorOr<std::unique_ptr<FileDescriptor>> Create() const { - return creator(); - } -}; - -// A ReversedSocketPair wraps another SocketPair but flips the first and second -// file descriptors. ReversedSocketPair is used to test socket pairs that -// should be symmetric. -class ReversedSocketPair : public SocketPair { - public: - explicit ReversedSocketPair(std::unique_ptr<SocketPair> base) - : base_(std::move(base)) {} - - int first_fd() const override { return base_->second_fd(); } - int second_fd() const override { return base_->first_fd(); } - int release_first_fd() override { return base_->release_second_fd(); } - int release_second_fd() override { return base_->release_first_fd(); } - const struct sockaddr* first_addr() const override { - return base_->second_addr(); - } - const struct sockaddr* second_addr() const override { - return base_->first_addr(); - } - size_t first_addr_size() const override { return base_->second_addr_size(); } - size_t second_addr_size() const override { return base_->first_addr_size(); } - size_t first_addr_len() const override { return base_->second_addr_len(); } - size_t second_addr_len() const override { return base_->first_addr_len(); } - - private: - std::unique_ptr<SocketPair> base_; -}; - -// Reversed returns a SocketPairKind that represents SocketPairs created by -// flipping the file descriptors provided by another SocketPair. -SocketPairKind Reversed(SocketPairKind const& base); - -// IncludeReversals returns a vector<SocketPairKind> that returns all -// SocketPairKinds in `vec` as well as all SocketPairKinds obtained by flipping -// the file descriptors provided by the kinds in `vec`. -std::vector<SocketPairKind> IncludeReversals(std::vector<SocketPairKind> vec); - -// A Middleware is a function wraps a SocketPairKind. -using Middleware = std::function<SocketPairKind(SocketPairKind)>; - -// Reversed returns a SocketPairKind that represents SocketPairs created by -// flipping the file descriptors provided by another SocketPair. -template <typename T> -Middleware SetSockOpt(int level, int optname, T* value) { - return [=](SocketPairKind const& base) { - auto const& creator = base.creator; - return SocketPairKind{ - absl::StrCat("setsockopt(", level, ", ", optname, ", ", *value, ") ", - base.description), - base.domain, base.type, base.protocol, - [creator, level, optname, - value]() -> PosixErrorOr<std::unique_ptr<SocketPair>> { - ASSIGN_OR_RETURN_ERRNO(auto creator_value, creator()); - if (creator_value->first_fd() >= 0) { - RETURN_ERROR_IF_SYSCALL_FAIL(setsockopt( - creator_value->first_fd(), level, optname, value, sizeof(T))); - } - if (creator_value->second_fd() >= 0) { - RETURN_ERROR_IF_SYSCALL_FAIL(setsockopt( - creator_value->second_fd(), level, optname, value, sizeof(T))); - } - return creator_value; - }}; - }; -} - -constexpr int kSockOptOn = 1; -constexpr int kSockOptOff = 0; - -// NoOp returns the same SocketPairKind that it is passed. -SocketPairKind NoOp(SocketPairKind const& base); - -// TransferTest tests that data can be send back and fourth between two -// specified FDs. Note that calls to this function should be wrapped in -// ASSERT_NO_FATAL_FAILURE(). -void TransferTest(int fd1, int fd2); - -// Fills [buf, buf+len) with random bytes. -void RandomizeBuffer(char* buf, size_t len); - -// Base test fixture for tests that operate on pairs of connected sockets. -class SocketPairTest : public ::testing::TestWithParam<SocketPairKind> { - protected: - SocketPairTest() { - // gUnit uses printf, so so will we. - printf("Testing with %s\n", GetParam().description.c_str()); - fflush(stdout); - } - - PosixErrorOr<std::unique_ptr<SocketPair>> NewSocketPair() const { - return GetParam().Create(); - } -}; - -// Base test fixture for tests that operate on simple Sockets. -class SimpleSocketTest : public ::testing::TestWithParam<SocketKind> { - protected: - SimpleSocketTest() { - // gUnit uses printf, so so will we. - printf("Testing with %s\n", GetParam().description.c_str()); - } - - PosixErrorOr<std::unique_ptr<FileDescriptor>> NewSocket() const { - return GetParam().Create(); - } -}; - -SocketKind SimpleSocket(int fam, int type, int proto); - -// Send a buffer of size 'size' to sockets->first_fd(), returning the result of -// sendmsg. -// -// If reader, read from second_fd() until size bytes have been read. -ssize_t SendLargeSendMsg(const std::unique_ptr<SocketPair>& sockets, - size_t size, bool reader); - -// Initializes the given buffer with random data. -void RandomizeBuffer(char* ptr, size_t len); - -enum class AddressFamily { kIpv4 = 1, kIpv6 = 2, kDualStack = 3 }; -enum class SocketType { kUdp = 1, kTcp = 2 }; - -// Returns a PosixError or a port that is available. If 0 is specified as the -// port it will bind port 0 (and allow the kernel to select any free port). -// Otherwise, it will try to bind the specified port and validate that it can be -// used for the requested family and socket type. The final option is -// reuse_addr. This specifies whether SO_REUSEADDR should be applied before a -// bind(2) attempt. SO_REUSEADDR means that sockets in TIME_WAIT states or other -// bound UDP sockets would not cause an error on bind(2). This option should be -// set if subsequent calls to bind on the returned port will also use -// SO_REUSEADDR. -// -// Note: That this test will attempt to bind the ANY address for the respective -// protocol. -PosixErrorOr<int> PortAvailable(int port, AddressFamily family, SocketType type, - bool reuse_addr); - -// FreeAvailablePort is used to return a port that was obtained by using -// the PortAvailable helper with port 0. -PosixError FreeAvailablePort(int port); - -// SendMsg converts a buffer to an iovec and adds it to msg before sending it. -PosixErrorOr<int> SendMsg(int sock, msghdr* msg, char buf[], int buf_size); - -// RecvNoData checks that no data is receivable on sock. -void RecvNoData(int sock); - -// Base test fixture for tests that apply to all kinds of pairs of connected -// sockets. -using AllSocketPairTest = SocketPairTest; - -struct TestAddress { - std::string description; - sockaddr_storage addr; - socklen_t addr_len; - - int family() const { return addr.ss_family; } - explicit TestAddress(std::string description = "") - : description(std::move(description)), addr(), addr_len() {} -}; - -constexpr char kMulticastAddress[] = "224.0.2.1"; -constexpr char kBroadcastAddress[] = "255.255.255.255"; - -TestAddress V4Any(); -TestAddress V4Broadcast(); -TestAddress V4Loopback(); -TestAddress V4MappedAny(); -TestAddress V4MappedLoopback(); -TestAddress V4Multicast(); -TestAddress V6Any(); -TestAddress V6Loopback(); - -// Compute the internet checksum of an IP header. -uint16_t IPChecksum(struct iphdr ip); - -// Compute the internet checksum of a UDP header. -uint16_t UDPChecksum(struct iphdr iphdr, struct udphdr udphdr, - const char* payload, ssize_t payload_len); - -// Compute the internet checksum of an ICMP header. -uint16_t ICMPChecksum(struct icmphdr icmphdr, const char* payload, - ssize_t payload_len); - -namespace internal { -PosixErrorOr<int> TryPortAvailable(int port, AddressFamily family, - SocketType type, bool reuse_addr); -} // namespace internal - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_SYSCALLS_SOCKET_TEST_UTIL_H_ diff --git a/test/syscalls/linux/socket_test_util_impl.cc b/test/syscalls/linux/socket_test_util_impl.cc deleted file mode 100644 index ef661a0e3..000000000 --- a/test/syscalls/linux/socket_test_util_impl.cc +++ /dev/null @@ -1,28 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/syscalls/linux/socket_test_util.h" - -namespace gvisor { -namespace testing { - -PosixErrorOr<int> PortAvailable(int port, AddressFamily family, SocketType type, - bool reuse_addr) { - return internal::TryPortAvailable(port, family, type, reuse_addr); -} - -PosixError FreeAvailablePort(int port) { return NoError(); } - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_unix.cc b/test/syscalls/linux/socket_unix.cc deleted file mode 100644 index 4cf1f76f1..000000000 --- a/test/syscalls/linux/socket_unix.cc +++ /dev/null @@ -1,273 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/syscalls/linux/socket_unix.h" - -#include <errno.h> -#include <net/if.h> -#include <stdio.h> -#include <sys/ioctl.h> -#include <sys/socket.h> -#include <sys/types.h> -#include <sys/un.h> - -#include <vector> - -#include "gtest/gtest.h" -#include "absl/strings/string_view.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -// This file contains tests specific to Unix domain sockets. It does not contain -// tests for UDS control messages. Those belong in socket_unix_cmsg.cc. -// -// This file is a generic socket test file. It must be built with another file -// that provides the test types. - -namespace gvisor { -namespace testing { - -namespace { - -TEST_P(UnixSocketPairTest, InvalidGetSockOpt) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - int opt; - socklen_t optlen = sizeof(opt); - EXPECT_THAT(getsockopt(sockets->first_fd(), SOL_SOCKET, -1, &opt, &optlen), - SyscallFailsWithErrno(ENOPROTOOPT)); -} - -TEST_P(UnixSocketPairTest, BindToBadName) { - auto pair = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - - constexpr char kBadName[] = "/some/path/that/does/not/exist"; - sockaddr_un sockaddr; - sockaddr.sun_family = AF_LOCAL; - memcpy(sockaddr.sun_path, kBadName, sizeof(kBadName)); - - EXPECT_THAT( - bind(pair->first_fd(), reinterpret_cast<struct sockaddr*>(&sockaddr), - sizeof(sockaddr)), - SyscallFailsWithErrno(ENOENT)); -} - -TEST_P(UnixSocketPairTest, BindToBadFamily) { - auto pair = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - - constexpr char kBadName[] = "/some/path/that/does/not/exist"; - sockaddr_un sockaddr; - sockaddr.sun_family = AF_INET; - memcpy(sockaddr.sun_path, kBadName, sizeof(kBadName)); - - EXPECT_THAT( - bind(pair->first_fd(), reinterpret_cast<struct sockaddr*>(&sockaddr), - sizeof(sockaddr)), - SyscallFailsWithErrno(EINVAL)); -} - -TEST_P(UnixSocketPairTest, RecvmmsgTimeoutAfterRecv) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - char sent_data[10]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - char received_data[sizeof(sent_data) * 2]; - std::vector<struct mmsghdr> msgs(2); - std::vector<struct iovec> iovs(msgs.size()); - const int chunk_size = sizeof(received_data) / msgs.size(); - for (size_t i = 0; i < msgs.size(); i++) { - iovs[i].iov_len = chunk_size; - iovs[i].iov_base = &received_data[i * chunk_size]; - msgs[i].msg_hdr.msg_iov = &iovs[i]; - msgs[i].msg_hdr.msg_iovlen = 1; - } - - ASSERT_THAT(WriteFd(sockets->first_fd(), sent_data, sizeof(sent_data)), - SyscallSucceedsWithValue(sizeof(sent_data))); - - struct timespec timeout = {0, 1}; - ASSERT_THAT(RetryEINTR(recvmmsg)(sockets->second_fd(), &msgs[0], msgs.size(), - 0, &timeout), - SyscallSucceedsWithValue(1)); - - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); - - EXPECT_EQ(chunk_size, msgs[0].msg_len); -} - -TEST_P(UnixSocketPairTest, TIOCINQSucceeds) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - if (IsRunningOnGvisor()) { - // TODO(gvisor.dev/issue/273): Inherited host UDS don't support TIOCINQ. - // Skip the test. - int size = -1; - int ret = ioctl(sockets->first_fd(), TIOCINQ, &size); - SKIP_IF(ret == -1 && errno == ENOTTY); - } - - int size = -1; - EXPECT_THAT(ioctl(sockets->first_fd(), TIOCINQ, &size), SyscallSucceeds()); - EXPECT_EQ(size, 0); - - const char some_data[] = "dangerzone"; - ASSERT_THAT( - RetryEINTR(send)(sockets->second_fd(), &some_data, sizeof(some_data), 0), - SyscallSucceeds()); - EXPECT_THAT(ioctl(sockets->first_fd(), TIOCINQ, &size), SyscallSucceeds()); - EXPECT_EQ(size, sizeof(some_data)); - - // Linux only reports the first message's size, which is wrong. We test for - // the behavior described in the man page. - SKIP_IF(!IsRunningOnGvisor()); - - ASSERT_THAT( - RetryEINTR(send)(sockets->second_fd(), &some_data, sizeof(some_data), 0), - SyscallSucceeds()); - EXPECT_THAT(ioctl(sockets->first_fd(), TIOCINQ, &size), SyscallSucceeds()); - EXPECT_EQ(size, sizeof(some_data) * 2); -} - -TEST_P(UnixSocketPairTest, TIOCOUTQSucceeds) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - if (IsRunningOnGvisor()) { - // TODO(gvisor.dev/issue/273): Inherited host UDS don't support TIOCOUTQ. - // Skip the test. - int size = -1; - int ret = ioctl(sockets->second_fd(), TIOCOUTQ, &size); - SKIP_IF(ret == -1 && errno == ENOTTY); - } - - int size = -1; - EXPECT_THAT(ioctl(sockets->second_fd(), TIOCOUTQ, &size), SyscallSucceeds()); - EXPECT_EQ(size, 0); - - // Linux reports bogus numbers which are related to its internal allocations. - // We test for the behavior described in the man page. - SKIP_IF(!IsRunningOnGvisor()); - - const char some_data[] = "dangerzone"; - ASSERT_THAT( - RetryEINTR(send)(sockets->second_fd(), &some_data, sizeof(some_data), 0), - SyscallSucceeds()); - EXPECT_THAT(ioctl(sockets->second_fd(), TIOCOUTQ, &size), SyscallSucceeds()); - EXPECT_EQ(size, sizeof(some_data)); - - ASSERT_THAT( - RetryEINTR(send)(sockets->second_fd(), &some_data, sizeof(some_data), 0), - SyscallSucceeds()); - EXPECT_THAT(ioctl(sockets->second_fd(), TIOCOUTQ, &size), SyscallSucceeds()); - EXPECT_EQ(size, sizeof(some_data) * 2); -} - -TEST_P(UnixSocketPairTest, NetdeviceIoctlsSucceed) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - // Prepare the request. - struct ifreq ifr; - snprintf(ifr.ifr_name, IFNAMSIZ, "lo"); - - // Check that the ioctl either succeeds or fails with ENODEV. - int err = ioctl(sockets->first_fd(), SIOCGIFINDEX, &ifr); - if (err < 0) { - ASSERT_EQ(errno, ENODEV); - } -} - -TEST_P(UnixSocketPairTest, Shutdown) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - const std::string data = "abc"; - ASSERT_THAT(WriteFd(sockets->first_fd(), data.c_str(), data.size()), - SyscallSucceedsWithValue(data.size())); - - ASSERT_THAT(shutdown(sockets->first_fd(), SHUT_RDWR), SyscallSucceeds()); - ASSERT_THAT(shutdown(sockets->second_fd(), SHUT_RDWR), SyscallSucceeds()); - - // Shutting down a socket does not clear the buffer. - char buf[3]; - ASSERT_THAT(ReadFd(sockets->second_fd(), buf, data.size()), - SyscallSucceedsWithValue(data.size())); - EXPECT_EQ(data, absl::string_view(buf, data.size())); -} - -TEST_P(UnixSocketPairTest, ShutdownRead) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(shutdown(sockets->first_fd(), SHUT_RD), SyscallSucceeds()); - - // When the socket is shutdown for read, read behavior varies between - // different socket types. This is covered by the various ReadOneSideClosed - // test cases. - - // ... and the peer cannot write. - const std::string data = "abc"; - EXPECT_THAT(WriteFd(sockets->second_fd(), data.c_str(), data.size()), - SyscallFailsWithErrno(EPIPE)); - - // ... but the socket can still write. - ASSERT_THAT(WriteFd(sockets->first_fd(), data.c_str(), data.size()), - SyscallSucceedsWithValue(data.size())); - - // ... and the peer can still read. - char buf[3]; - EXPECT_THAT(ReadFd(sockets->second_fd(), buf, data.size()), - SyscallSucceedsWithValue(data.size())); - EXPECT_EQ(data, absl::string_view(buf, data.size())); -} - -TEST_P(UnixSocketPairTest, ShutdownWrite) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(shutdown(sockets->first_fd(), SHUT_WR), SyscallSucceeds()); - - // When the socket is shutdown for write, it cannot write. - const std::string data = "abc"; - EXPECT_THAT(WriteFd(sockets->first_fd(), data.c_str(), data.size()), - SyscallFailsWithErrno(EPIPE)); - - // ... and the peer read behavior varies between different socket types. This - // is covered by the various ReadOneSideClosed test cases. - - // ... but the peer can still write. - char buf[3]; - ASSERT_THAT(WriteFd(sockets->second_fd(), data.c_str(), data.size()), - SyscallSucceedsWithValue(data.size())); - - // ... and the socket can still read. - EXPECT_THAT(ReadFd(sockets->first_fd(), buf, data.size()), - SyscallSucceedsWithValue(data.size())); - EXPECT_EQ(data, absl::string_view(buf, data.size())); -} - -TEST_P(UnixSocketPairTest, SocketReopenFromProcfs) { - // TODO(b/122310852): We should be returning ENXIO and NOT EIO. - SKIP_IF(IsRunningOnGvisor()); - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - // Opening a socket pair via /proc/self/fd/X is a ENXIO. - for (const int fd : {sockets->first_fd(), sockets->second_fd()}) { - ASSERT_THAT(Open(absl::StrCat("/proc/self/fd/", fd), O_WRONLY), - PosixErrorIs(ENXIO, ::testing::_)); - } -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_unix.h b/test/syscalls/linux/socket_unix.h deleted file mode 100644 index 3625cc404..000000000 --- a/test/syscalls/linux/socket_unix.h +++ /dev/null @@ -1,29 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_SYSCALLS_LINUX_SOCKET_UNIX_H_ -#define GVISOR_TEST_SYSCALLS_LINUX_SOCKET_UNIX_H_ - -#include "test/syscalls/linux/socket_test_util.h" - -namespace gvisor { -namespace testing { - -// Test fixture for tests that apply to pairs of connected unix sockets. -using UnixSocketPairTest = SocketPairTest; - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_SYSCALLS_LINUX_SOCKET_UNIX_H_ diff --git a/test/syscalls/linux/socket_unix_abstract_nonblock.cc b/test/syscalls/linux/socket_unix_abstract_nonblock.cc deleted file mode 100644 index 8bef76b67..000000000 --- a/test/syscalls/linux/socket_unix_abstract_nonblock.cc +++ /dev/null @@ -1,39 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <vector> - -#include "test/syscalls/linux/socket_non_blocking.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -std::vector<SocketPairKind> GetSocketPairs() { - return ApplyVec<SocketPairKind>( - AbstractBoundUnixDomainSocketPair, - AllBitwiseCombinations(List<int>{SOCK_STREAM, SOCK_DGRAM, SOCK_SEQPACKET}, - List<int>{SOCK_NONBLOCK})); -} - -INSTANTIATE_TEST_SUITE_P( - NonBlockingAbstractUnixSockets, NonBlockingSocketPairTest, - ::testing::ValuesIn(IncludeReversals(GetSocketPairs()))); - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_unix_blocking_local.cc b/test/syscalls/linux/socket_unix_blocking_local.cc deleted file mode 100644 index 77cb8c6d6..000000000 --- a/test/syscalls/linux/socket_unix_blocking_local.cc +++ /dev/null @@ -1,45 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <vector> - -#include "test/syscalls/linux/socket_blocking.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -std::vector<SocketPairKind> GetSocketPairs() { - return VecCat<SocketPairKind>( - ApplyVec<SocketPairKind>( - UnixDomainSocketPair, - std::vector<int>{SOCK_STREAM, SOCK_SEQPACKET, SOCK_DGRAM}), - ApplyVec<SocketPairKind>( - FilesystemBoundUnixDomainSocketPair, - std::vector<int>{SOCK_STREAM, SOCK_SEQPACKET, SOCK_DGRAM}), - ApplyVec<SocketPairKind>( - AbstractBoundUnixDomainSocketPair, - std::vector<int>{SOCK_STREAM, SOCK_SEQPACKET, SOCK_DGRAM})); -} - -INSTANTIATE_TEST_SUITE_P( - NonBlockingUnixDomainSockets, BlockingSocketPairTest, - ::testing::ValuesIn(IncludeReversals(GetSocketPairs()))); - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_unix_cmsg.cc b/test/syscalls/linux/socket_unix_cmsg.cc deleted file mode 100644 index a16899493..000000000 --- a/test/syscalls/linux/socket_unix_cmsg.cc +++ /dev/null @@ -1,1501 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/syscalls/linux/socket_unix_cmsg.h" - -#include <errno.h> -#include <net/if.h> -#include <stdio.h> -#include <sys/ioctl.h> -#include <sys/socket.h> -#include <sys/types.h> -#include <sys/un.h> - -#include <vector> - -#include "gtest/gtest.h" -#include "absl/strings/string_view.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -// This file contains tests for control message in Unix domain sockets. -// -// This file is a generic socket test file. It must be built with another file -// that provides the test types. - -namespace gvisor { -namespace testing { - -namespace { - -TEST_P(UnixSocketPairCmsgTest, BasicFDPass) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - auto pair = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - - ASSERT_NO_FATAL_FAILURE(SendSingleFD(sockets->first_fd(), pair->second_fd(), - sent_data, sizeof(sent_data))); - - char received_data[20]; - int fd = -1; - ASSERT_NO_FATAL_FAILURE(RecvSingleFD(sockets->second_fd(), &fd, received_data, - sizeof(received_data))); - - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); - - ASSERT_NO_FATAL_FAILURE(TransferTest(fd, pair->first_fd())); -} - -TEST_P(UnixSocketPairCmsgTest, BasicTwoFDPass) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - auto pair1 = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - auto pair2 = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - int sent_fds[] = {pair1->second_fd(), pair2->second_fd()}; - - ASSERT_NO_FATAL_FAILURE( - SendFDs(sockets->first_fd(), sent_fds, 2, sent_data, sizeof(sent_data))); - - char received_data[20]; - int received_fds[] = {-1, -1}; - - ASSERT_NO_FATAL_FAILURE(RecvFDs(sockets->second_fd(), received_fds, 2, - received_data, sizeof(received_data))); - - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); - - ASSERT_NO_FATAL_FAILURE(TransferTest(received_fds[0], pair1->first_fd())); - ASSERT_NO_FATAL_FAILURE(TransferTest(received_fds[1], pair2->first_fd())); -} - -TEST_P(UnixSocketPairCmsgTest, BasicThreeFDPass) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - auto pair1 = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - auto pair2 = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - auto pair3 = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - int sent_fds[] = {pair1->second_fd(), pair2->second_fd(), pair3->second_fd()}; - - ASSERT_NO_FATAL_FAILURE( - SendFDs(sockets->first_fd(), sent_fds, 3, sent_data, sizeof(sent_data))); - - char received_data[20]; - int received_fds[] = {-1, -1, -1}; - - ASSERT_NO_FATAL_FAILURE(RecvFDs(sockets->second_fd(), received_fds, 3, - received_data, sizeof(received_data))); - - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); - - ASSERT_NO_FATAL_FAILURE(TransferTest(received_fds[0], pair1->first_fd())); - ASSERT_NO_FATAL_FAILURE(TransferTest(received_fds[1], pair2->first_fd())); - ASSERT_NO_FATAL_FAILURE(TransferTest(received_fds[2], pair3->first_fd())); -} - -TEST_P(UnixSocketPairCmsgTest, BadFDPass) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - int sent_fd = -1; - - struct msghdr msg = {}; - char control[CMSG_SPACE(sizeof(sent_fd))]; - msg.msg_control = control; - msg.msg_controllen = sizeof(control); - - struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg); - cmsg->cmsg_len = CMSG_LEN(sizeof(sent_fd)); - cmsg->cmsg_level = SOL_SOCKET; - cmsg->cmsg_type = SCM_RIGHTS; - memcpy(CMSG_DATA(cmsg), &sent_fd, sizeof(sent_fd)); - - struct iovec iov; - iov.iov_base = sent_data; - iov.iov_len = sizeof(sent_data); - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - ASSERT_THAT(RetryEINTR(sendmsg)(sockets->first_fd(), &msg, 0), - SyscallFailsWithErrno(EBADF)); -} - -TEST_P(UnixSocketPairCmsgTest, ShortCmsg) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - int sent_fd = -1; - - struct msghdr msg = {}; - char control[CMSG_SPACE(sizeof(sent_fd))]; - msg.msg_control = control; - msg.msg_controllen = sizeof(control); - - struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg); - cmsg->cmsg_len = 1; - cmsg->cmsg_level = SOL_SOCKET; - cmsg->cmsg_type = SCM_RIGHTS; - memcpy(CMSG_DATA(cmsg), &sent_fd, sizeof(sent_fd)); - - struct iovec iov; - iov.iov_base = sent_data; - iov.iov_len = sizeof(sent_data); - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - ASSERT_THAT(RetryEINTR(sendmsg)(sockets->first_fd(), &msg, 0), - SyscallFailsWithErrno(EINVAL)); -} - -// BasicFDPassNoSpace starts off by sending a single FD just like BasicFDPass. -// The difference is that when calling recvmsg, no space for FDs is provided, -// only space for the cmsg header. -TEST_P(UnixSocketPairCmsgTest, BasicFDPassNoSpace) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - auto pair = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - - ASSERT_NO_FATAL_FAILURE(SendSingleFD(sockets->first_fd(), pair->second_fd(), - sent_data, sizeof(sent_data))); - - char received_data[20]; - - struct msghdr msg = {}; - std::vector<char> control(CMSG_SPACE(0)); - msg.msg_control = &control[0]; - msg.msg_controllen = control.size(); - - struct iovec iov; - iov.iov_base = received_data; - iov.iov_len = sizeof(received_data); - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - ASSERT_THAT(RetryEINTR(recvmsg)(sockets->second_fd(), &msg, 0), - SyscallSucceedsWithValue(sizeof(received_data))); - - EXPECT_EQ(msg.msg_controllen, 0); - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); -} - -// BasicFDPassNoSpaceMsgCtrunc sends an FD, but does not provide any space to -// receive it. It then verifies that the MSG_CTRUNC flag is set in the msghdr. -TEST_P(UnixSocketPairCmsgTest, BasicFDPassNoSpaceMsgCtrunc) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - auto pair = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - - ASSERT_NO_FATAL_FAILURE(SendSingleFD(sockets->first_fd(), pair->second_fd(), - sent_data, sizeof(sent_data))); - - struct msghdr msg = {}; - std::vector<char> control(CMSG_SPACE(0)); - msg.msg_control = &control[0]; - msg.msg_controllen = control.size(); - - char received_data[sizeof(sent_data)]; - struct iovec iov; - iov.iov_base = received_data; - iov.iov_len = sizeof(received_data); - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - ASSERT_THAT(RetryEINTR(recvmsg)(sockets->second_fd(), &msg, 0), - SyscallSucceedsWithValue(sizeof(received_data))); - - EXPECT_EQ(msg.msg_controllen, 0); - EXPECT_EQ(msg.msg_flags, MSG_CTRUNC); -} - -// BasicFDPassNullControlMsgCtrunc sends an FD and sets contradictory values for -// msg_controllen and msg_control. msg_controllen is set to the correct size to -// accommodate the FD, but msg_control is set to NULL. In this case, msg_control -// should override msg_controllen. -TEST_P(UnixSocketPairCmsgTest, BasicFDPassNullControlMsgCtrunc) { - // FIXME(gvisor.dev/issue/207): Fix handling of NULL msg_control. - SKIP_IF(IsRunningOnGvisor()); - - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - auto pair = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - - ASSERT_NO_FATAL_FAILURE(SendSingleFD(sockets->first_fd(), pair->second_fd(), - sent_data, sizeof(sent_data))); - - struct msghdr msg = {}; - msg.msg_controllen = CMSG_SPACE(1); - - char received_data[sizeof(sent_data)]; - struct iovec iov; - iov.iov_base = received_data; - iov.iov_len = sizeof(received_data); - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - ASSERT_THAT(RetryEINTR(recvmsg)(sockets->second_fd(), &msg, 0), - SyscallSucceedsWithValue(sizeof(received_data))); - - EXPECT_EQ(msg.msg_controllen, 0); - EXPECT_EQ(msg.msg_flags, MSG_CTRUNC); -} - -// BasicFDPassNotEnoughSpaceMsgCtrunc sends an FD, but does not provide enough -// space to receive it. It then verifies that the MSG_CTRUNC flag is set in the -// msghdr. -TEST_P(UnixSocketPairCmsgTest, BasicFDPassNotEnoughSpaceMsgCtrunc) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - auto pair = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - - ASSERT_NO_FATAL_FAILURE(SendSingleFD(sockets->first_fd(), pair->second_fd(), - sent_data, sizeof(sent_data))); - - struct msghdr msg = {}; - std::vector<char> control(CMSG_SPACE(0) + 1); - msg.msg_control = &control[0]; - msg.msg_controllen = control.size(); - - char received_data[sizeof(sent_data)]; - struct iovec iov; - iov.iov_base = received_data; - iov.iov_len = sizeof(received_data); - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - ASSERT_THAT(RetryEINTR(recvmsg)(sockets->second_fd(), &msg, 0), - SyscallSucceedsWithValue(sizeof(received_data))); - - EXPECT_EQ(msg.msg_controllen, 0); - EXPECT_EQ(msg.msg_flags, MSG_CTRUNC); -} - -// BasicThreeFDPassTruncationMsgCtrunc sends three FDs, but only provides enough -// space to receive two of them. It then verifies that the MSG_CTRUNC flag is -// set in the msghdr. -TEST_P(UnixSocketPairCmsgTest, BasicThreeFDPassTruncationMsgCtrunc) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - auto pair1 = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - auto pair2 = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - auto pair3 = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - int sent_fds[] = {pair1->second_fd(), pair2->second_fd(), pair3->second_fd()}; - - ASSERT_NO_FATAL_FAILURE( - SendFDs(sockets->first_fd(), sent_fds, 3, sent_data, sizeof(sent_data))); - - struct msghdr msg = {}; - std::vector<char> control(CMSG_SPACE(2 * sizeof(int))); - msg.msg_control = &control[0]; - msg.msg_controllen = control.size(); - - char received_data[sizeof(sent_data)]; - struct iovec iov; - iov.iov_base = received_data; - iov.iov_len = sizeof(received_data); - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - ASSERT_THAT(RetryEINTR(recvmsg)(sockets->second_fd(), &msg, 0), - SyscallSucceedsWithValue(sizeof(received_data))); - - EXPECT_EQ(msg.msg_flags, MSG_CTRUNC); - - struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg); - ASSERT_NE(cmsg, nullptr); - EXPECT_EQ(cmsg->cmsg_len, CMSG_LEN(2 * sizeof(int))); - EXPECT_EQ(cmsg->cmsg_level, SOL_SOCKET); - EXPECT_EQ(cmsg->cmsg_type, SCM_RIGHTS); -} - -// BasicFDPassUnalignedRecv starts off by sending a single FD just like -// BasicFDPass. The difference is that when calling recvmsg, the length of the -// receive data is only aligned on a 4 byte boundry instead of the normal 8. -TEST_P(UnixSocketPairCmsgTest, BasicFDPassUnalignedRecv) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - auto pair = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - - ASSERT_NO_FATAL_FAILURE(SendSingleFD(sockets->first_fd(), pair->second_fd(), - sent_data, sizeof(sent_data))); - - char received_data[20]; - int fd = -1; - ASSERT_NO_FATAL_FAILURE(RecvSingleFDUnaligned( - sockets->second_fd(), &fd, received_data, sizeof(received_data))); - - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); - - ASSERT_NO_FATAL_FAILURE(TransferTest(fd, pair->first_fd())); -} - -// BasicFDPassUnalignedRecvNoMsgTrunc sends one FD and only provides enough -// space to receive just it. (Normally the minimum amount of space one would -// provide would be enough space for two FDs.) It then verifies that the -// MSG_CTRUNC flag is not set in the msghdr. -TEST_P(UnixSocketPairCmsgTest, BasicFDPassUnalignedRecvNoMsgTrunc) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - auto pair = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - - ASSERT_NO_FATAL_FAILURE(SendSingleFD(sockets->first_fd(), pair->second_fd(), - sent_data, sizeof(sent_data))); - - struct msghdr msg = {}; - char control[CMSG_SPACE(sizeof(int)) - sizeof(int)]; - msg.msg_control = control; - msg.msg_controllen = sizeof(control); - - char received_data[sizeof(sent_data)] = {}; - struct iovec iov; - iov.iov_base = received_data; - iov.iov_len = sizeof(received_data); - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - ASSERT_THAT(RetryEINTR(recvmsg)(sockets->second_fd(), &msg, 0), - SyscallSucceedsWithValue(sizeof(received_data))); - - EXPECT_EQ(msg.msg_flags, 0); - - struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg); - ASSERT_NE(cmsg, nullptr); - EXPECT_EQ(cmsg->cmsg_len, CMSG_LEN(sizeof(int))); - EXPECT_EQ(cmsg->cmsg_level, SOL_SOCKET); - EXPECT_EQ(cmsg->cmsg_type, SCM_RIGHTS); -} - -// BasicTwoFDPassUnalignedRecvTruncationMsgTrunc sends two FDs, but only -// provides enough space to receive one of them. It then verifies that the -// MSG_CTRUNC flag is set in the msghdr. -TEST_P(UnixSocketPairCmsgTest, BasicTwoFDPassUnalignedRecvTruncationMsgTrunc) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - auto pair = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - int sent_fds[] = {pair->first_fd(), pair->second_fd()}; - - ASSERT_NO_FATAL_FAILURE( - SendFDs(sockets->first_fd(), sent_fds, 2, sent_data, sizeof(sent_data))); - - struct msghdr msg = {}; - // CMSG_SPACE rounds up to two FDs, we only want one. - char control[CMSG_SPACE(sizeof(int)) - sizeof(int)]; - msg.msg_control = control; - msg.msg_controllen = sizeof(control); - - char received_data[sizeof(sent_data)] = {}; - struct iovec iov; - iov.iov_base = received_data; - iov.iov_len = sizeof(received_data); - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - ASSERT_THAT(RetryEINTR(recvmsg)(sockets->second_fd(), &msg, 0), - SyscallSucceedsWithValue(sizeof(received_data))); - - EXPECT_EQ(msg.msg_flags, MSG_CTRUNC); - - struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg); - ASSERT_NE(cmsg, nullptr); - EXPECT_EQ(cmsg->cmsg_len, CMSG_LEN(sizeof(int))); - EXPECT_EQ(cmsg->cmsg_level, SOL_SOCKET); - EXPECT_EQ(cmsg->cmsg_type, SCM_RIGHTS); -} - -TEST_P(UnixSocketPairCmsgTest, ConcurrentBasicFDPass) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - int sockfd1 = sockets->first_fd(); - auto recv_func = [sockfd1, sent_data]() { - char received_data[20]; - int fd = -1; - RecvSingleFD(sockfd1, &fd, received_data, sizeof(received_data)); - ASSERT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); - char buf[20]; - ASSERT_THAT(ReadFd(fd, buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - ASSERT_THAT(WriteFd(fd, buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - }; - - auto pair = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - - ASSERT_NO_FATAL_FAILURE(SendSingleFD(sockets->second_fd(), pair->second_fd(), - sent_data, sizeof(sent_data))); - - ScopedThread t(recv_func); - - RandomizeBuffer(sent_data, sizeof(sent_data)); - ASSERT_THAT(WriteFd(pair->first_fd(), sent_data, sizeof(sent_data)), - SyscallSucceedsWithValue(sizeof(sent_data))); - - char received_data[20]; - ASSERT_THAT(ReadFd(pair->first_fd(), received_data, sizeof(received_data)), - SyscallSucceedsWithValue(sizeof(received_data))); - - t.Join(); - - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); -} - -// FDPassNoRecv checks that the control message can be safely ignored by using -// read(2) instead of recvmsg(2). -TEST_P(UnixSocketPairCmsgTest, FDPassNoRecv) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - auto pair = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - - ASSERT_NO_FATAL_FAILURE(SendSingleFD(sockets->first_fd(), pair->second_fd(), - sent_data, sizeof(sent_data))); - - // Read while ignoring the passed FD. - char received_data[20]; - ASSERT_THAT( - ReadFd(sockets->second_fd(), received_data, sizeof(received_data)), - SyscallSucceedsWithValue(sizeof(received_data))); - - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); - - // Check that the socket still works for reads and writes. - ASSERT_NO_FATAL_FAILURE( - TransferTest(sockets->first_fd(), sockets->second_fd())); -} - -// FDPassInterspersed1 checks that sent control messages cannot be read before -// their associated data has been read. -TEST_P(UnixSocketPairCmsgTest, FDPassInterspersed1) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char written_data[20]; - RandomizeBuffer(written_data, sizeof(written_data)); - - ASSERT_THAT(WriteFd(sockets->first_fd(), written_data, sizeof(written_data)), - SyscallSucceedsWithValue(sizeof(written_data))); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - auto pair = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - ASSERT_NO_FATAL_FAILURE(SendSingleFD(sockets->first_fd(), pair->second_fd(), - sent_data, sizeof(sent_data))); - - // Check that we don't get a control message, but do get the data. - char received_data[20]; - RecvNoCmsg(sockets->second_fd(), received_data, sizeof(received_data)); - EXPECT_EQ(0, memcmp(written_data, received_data, sizeof(written_data))); -} - -// FDPassInterspersed2 checks that sent control messages cannot be read after -// their associated data has been read while ignoring the control message by -// using read(2) instead of recvmsg(2). -TEST_P(UnixSocketPairCmsgTest, FDPassInterspersed2) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - auto pair = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - - ASSERT_NO_FATAL_FAILURE(SendSingleFD(sockets->first_fd(), pair->second_fd(), - sent_data, sizeof(sent_data))); - - char written_data[20]; - RandomizeBuffer(written_data, sizeof(written_data)); - ASSERT_THAT(WriteFd(sockets->first_fd(), written_data, sizeof(written_data)), - SyscallSucceedsWithValue(sizeof(written_data))); - - char received_data[20]; - ASSERT_THAT( - ReadFd(sockets->second_fd(), received_data, sizeof(received_data)), - SyscallSucceedsWithValue(sizeof(received_data))); - - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); - - ASSERT_NO_FATAL_FAILURE( - RecvNoCmsg(sockets->second_fd(), received_data, sizeof(received_data))); - EXPECT_EQ(0, memcmp(written_data, received_data, sizeof(written_data))); -} - -TEST_P(UnixSocketPairCmsgTest, FDPassNotCoalesced) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data1[20]; - RandomizeBuffer(sent_data1, sizeof(sent_data1)); - - auto pair1 = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - - ASSERT_NO_FATAL_FAILURE(SendSingleFD(sockets->first_fd(), pair1->second_fd(), - sent_data1, sizeof(sent_data1))); - - char sent_data2[20]; - RandomizeBuffer(sent_data2, sizeof(sent_data2)); - - auto pair2 = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - - ASSERT_NO_FATAL_FAILURE(SendSingleFD(sockets->first_fd(), pair2->second_fd(), - sent_data2, sizeof(sent_data2))); - - char received_data1[sizeof(sent_data1) + sizeof(sent_data2)]; - int received_fd1 = -1; - - RecvSingleFD(sockets->second_fd(), &received_fd1, received_data1, - sizeof(received_data1), sizeof(sent_data1)); - - EXPECT_EQ(0, memcmp(sent_data1, received_data1, sizeof(sent_data1))); - TransferTest(pair1->first_fd(), pair1->second_fd()); - - char received_data2[sizeof(sent_data1) + sizeof(sent_data2)]; - int received_fd2 = -1; - - RecvSingleFD(sockets->second_fd(), &received_fd2, received_data2, - sizeof(received_data2), sizeof(sent_data2)); - - EXPECT_EQ(0, memcmp(sent_data2, received_data2, sizeof(sent_data2))); - TransferTest(pair2->first_fd(), pair2->second_fd()); -} - -TEST_P(UnixSocketPairCmsgTest, FDPassPeek) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - auto pair = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - - ASSERT_NO_FATAL_FAILURE(SendSingleFD(sockets->first_fd(), pair->second_fd(), - sent_data, sizeof(sent_data))); - - char peek_data[20]; - int peek_fd = -1; - PeekSingleFD(sockets->second_fd(), &peek_fd, peek_data, sizeof(peek_data)); - EXPECT_EQ(0, memcmp(sent_data, peek_data, sizeof(sent_data))); - TransferTest(peek_fd, pair->first_fd()); - EXPECT_THAT(close(peek_fd), SyscallSucceeds()); - - char received_data[20]; - int received_fd = -1; - RecvSingleFD(sockets->second_fd(), &received_fd, received_data, - sizeof(received_data)); - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); - TransferTest(received_fd, pair->first_fd()); - EXPECT_THAT(close(received_fd), SyscallSucceeds()); -} - -TEST_P(UnixSocketPairCmsgTest, BasicCredPass) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - struct ucred sent_creds; - - ASSERT_THAT(sent_creds.pid = getpid(), SyscallSucceeds()); - ASSERT_THAT(sent_creds.uid = getuid(), SyscallSucceeds()); - ASSERT_THAT(sent_creds.gid = getgid(), SyscallSucceeds()); - - ASSERT_NO_FATAL_FAILURE( - SendCreds(sockets->first_fd(), sent_creds, sent_data, sizeof(sent_data))); - - SetSoPassCred(sockets->second_fd()); - - char received_data[20]; - struct ucred received_creds; - ASSERT_NO_FATAL_FAILURE(RecvCreds(sockets->second_fd(), &received_creds, - received_data, sizeof(received_data))); - - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); - EXPECT_EQ(sent_creds.pid, received_creds.pid); - EXPECT_EQ(sent_creds.uid, received_creds.uid); - EXPECT_EQ(sent_creds.gid, received_creds.gid); -} - -TEST_P(UnixSocketPairCmsgTest, SendNullCredsBeforeSoPassCredRecvEnd) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - ASSERT_NO_FATAL_FAILURE( - SendNullCmsg(sockets->first_fd(), sent_data, sizeof(sent_data))); - - SetSoPassCred(sockets->second_fd()); - - char received_data[20]; - struct ucred received_creds; - ASSERT_NO_FATAL_FAILURE(RecvCreds(sockets->second_fd(), &received_creds, - received_data, sizeof(received_data))); - - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); - - struct ucred want_creds { - 0, 65534, 65534 - }; - - EXPECT_EQ(want_creds.pid, received_creds.pid); - EXPECT_EQ(want_creds.uid, received_creds.uid); - EXPECT_EQ(want_creds.gid, received_creds.gid); -} - -TEST_P(UnixSocketPairCmsgTest, SendNullCredsAfterSoPassCredRecvEnd) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - SetSoPassCred(sockets->second_fd()); - - ASSERT_NO_FATAL_FAILURE( - SendNullCmsg(sockets->first_fd(), sent_data, sizeof(sent_data))); - - char received_data[20]; - struct ucred received_creds; - ASSERT_NO_FATAL_FAILURE(RecvCreds(sockets->second_fd(), &received_creds, - received_data, sizeof(received_data))); - - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); - - struct ucred want_creds; - ASSERT_THAT(want_creds.pid = getpid(), SyscallSucceeds()); - ASSERT_THAT(want_creds.uid = getuid(), SyscallSucceeds()); - ASSERT_THAT(want_creds.gid = getgid(), SyscallSucceeds()); - - EXPECT_EQ(want_creds.pid, received_creds.pid); - EXPECT_EQ(want_creds.uid, received_creds.uid); - EXPECT_EQ(want_creds.gid, received_creds.gid); -} - -TEST_P(UnixSocketPairCmsgTest, SendNullCredsBeforeSoPassCredSendEnd) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - ASSERT_NO_FATAL_FAILURE( - SendNullCmsg(sockets->first_fd(), sent_data, sizeof(sent_data))); - - SetSoPassCred(sockets->first_fd()); - - char received_data[20]; - ASSERT_NO_FATAL_FAILURE( - RecvNoCmsg(sockets->second_fd(), received_data, sizeof(received_data))); - - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); -} - -TEST_P(UnixSocketPairCmsgTest, SendNullCredsAfterSoPassCredSendEnd) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - SetSoPassCred(sockets->first_fd()); - - ASSERT_NO_FATAL_FAILURE( - SendNullCmsg(sockets->first_fd(), sent_data, sizeof(sent_data))); - - char received_data[20]; - ASSERT_NO_FATAL_FAILURE( - RecvNoCmsg(sockets->second_fd(), received_data, sizeof(received_data))); - - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); -} - -TEST_P(UnixSocketPairCmsgTest, - SendNullCredsBeforeSoPassCredRecvEndAfterSendEnd) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - SetSoPassCred(sockets->first_fd()); - - ASSERT_NO_FATAL_FAILURE( - SendNullCmsg(sockets->first_fd(), sent_data, sizeof(sent_data))); - - SetSoPassCred(sockets->second_fd()); - - char received_data[20]; - struct ucred received_creds; - ASSERT_NO_FATAL_FAILURE(RecvCreds(sockets->second_fd(), &received_creds, - received_data, sizeof(received_data))); - - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); - - struct ucred want_creds; - ASSERT_THAT(want_creds.pid = getpid(), SyscallSucceeds()); - ASSERT_THAT(want_creds.uid = getuid(), SyscallSucceeds()); - ASSERT_THAT(want_creds.gid = getgid(), SyscallSucceeds()); - - EXPECT_EQ(want_creds.pid, received_creds.pid); - EXPECT_EQ(want_creds.uid, received_creds.uid); - EXPECT_EQ(want_creds.gid, received_creds.gid); -} - -TEST_P(UnixSocketPairCmsgTest, WriteBeforeSoPassCredRecvEnd) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - ASSERT_THAT(WriteFd(sockets->first_fd(), sent_data, sizeof(sent_data)), - SyscallSucceedsWithValue(sizeof(sent_data))); - - SetSoPassCred(sockets->second_fd()); - - char received_data[20]; - - struct ucred received_creds; - ASSERT_NO_FATAL_FAILURE(RecvCreds(sockets->second_fd(), &received_creds, - received_data, sizeof(received_data))); - - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); - - struct ucred want_creds { - 0, 65534, 65534 - }; - - EXPECT_EQ(want_creds.pid, received_creds.pid); - EXPECT_EQ(want_creds.uid, received_creds.uid); - EXPECT_EQ(want_creds.gid, received_creds.gid); -} - -TEST_P(UnixSocketPairCmsgTest, WriteAfterSoPassCredRecvEnd) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - SetSoPassCred(sockets->second_fd()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - ASSERT_THAT(WriteFd(sockets->first_fd(), sent_data, sizeof(sent_data)), - SyscallSucceedsWithValue(sizeof(sent_data))); - - char received_data[20]; - - struct ucred received_creds; - ASSERT_NO_FATAL_FAILURE(RecvCreds(sockets->second_fd(), &received_creds, - received_data, sizeof(received_data))); - - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); - - struct ucred want_creds; - ASSERT_THAT(want_creds.pid = getpid(), SyscallSucceeds()); - ASSERT_THAT(want_creds.uid = getuid(), SyscallSucceeds()); - ASSERT_THAT(want_creds.gid = getgid(), SyscallSucceeds()); - - EXPECT_EQ(want_creds.pid, received_creds.pid); - EXPECT_EQ(want_creds.uid, received_creds.uid); - EXPECT_EQ(want_creds.gid, received_creds.gid); -} - -TEST_P(UnixSocketPairCmsgTest, WriteBeforeSoPassCredSendEnd) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - ASSERT_THAT(WriteFd(sockets->first_fd(), sent_data, sizeof(sent_data)), - SyscallSucceedsWithValue(sizeof(sent_data))); - - SetSoPassCred(sockets->first_fd()); - - char received_data[20]; - ASSERT_NO_FATAL_FAILURE( - RecvNoCmsg(sockets->second_fd(), received_data, sizeof(received_data))); - - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); -} - -TEST_P(UnixSocketPairCmsgTest, WriteAfterSoPassCredSendEnd) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - SetSoPassCred(sockets->first_fd()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - ASSERT_THAT(WriteFd(sockets->first_fd(), sent_data, sizeof(sent_data)), - SyscallSucceedsWithValue(sizeof(sent_data))); - - char received_data[20]; - ASSERT_NO_FATAL_FAILURE( - RecvNoCmsg(sockets->second_fd(), received_data, sizeof(received_data))); - - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); -} - -TEST_P(UnixSocketPairCmsgTest, WriteBeforeSoPassCredRecvEndAfterSendEnd) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - SetSoPassCred(sockets->first_fd()); - - ASSERT_THAT(WriteFd(sockets->first_fd(), sent_data, sizeof(sent_data)), - SyscallSucceedsWithValue(sizeof(sent_data))); - - SetSoPassCred(sockets->second_fd()); - - char received_data[20]; - - struct ucred received_creds; - ASSERT_NO_FATAL_FAILURE(RecvCreds(sockets->second_fd(), &received_creds, - received_data, sizeof(received_data))); - - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); - - struct ucred want_creds; - ASSERT_THAT(want_creds.pid = getpid(), SyscallSucceeds()); - ASSERT_THAT(want_creds.uid = getuid(), SyscallSucceeds()); - ASSERT_THAT(want_creds.gid = getgid(), SyscallSucceeds()); - - EXPECT_EQ(want_creds.pid, received_creds.pid); - EXPECT_EQ(want_creds.uid, received_creds.uid); - EXPECT_EQ(want_creds.gid, received_creds.gid); -} - -TEST_P(UnixSocketPairCmsgTest, CredPassTruncated) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - struct ucred sent_creds; - - ASSERT_THAT(sent_creds.pid = getpid(), SyscallSucceeds()); - ASSERT_THAT(sent_creds.uid = getuid(), SyscallSucceeds()); - ASSERT_THAT(sent_creds.gid = getgid(), SyscallSucceeds()); - - ASSERT_NO_FATAL_FAILURE( - SendCreds(sockets->first_fd(), sent_creds, sent_data, sizeof(sent_data))); - - SetSoPassCred(sockets->second_fd()); - - struct msghdr msg = {}; - char control[CMSG_SPACE(0) + sizeof(pid_t)]; - msg.msg_control = control; - msg.msg_controllen = sizeof(control); - - char received_data[sizeof(sent_data)] = {}; - struct iovec iov; - iov.iov_base = received_data; - iov.iov_len = sizeof(received_data); - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - ASSERT_THAT(RetryEINTR(recvmsg)(sockets->second_fd(), &msg, 0), - SyscallSucceedsWithValue(sizeof(received_data))); - - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); - - EXPECT_EQ(msg.msg_controllen, sizeof(control)); - - struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg); - ASSERT_NE(cmsg, nullptr); - EXPECT_EQ(cmsg->cmsg_len, sizeof(control)); - EXPECT_EQ(cmsg->cmsg_level, SOL_SOCKET); - EXPECT_EQ(cmsg->cmsg_type, SCM_CREDENTIALS); - - pid_t pid = 0; - memcpy(&pid, CMSG_DATA(cmsg), sizeof(pid)); - EXPECT_EQ(pid, sent_creds.pid); -} - -// CredPassNoMsgCtrunc passes a full set of credentials. It then verifies that -// receiving the full set does not result in MSG_CTRUNC being set in the msghdr. -TEST_P(UnixSocketPairCmsgTest, CredPassNoMsgCtrunc) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - struct ucred sent_creds; - - ASSERT_THAT(sent_creds.pid = getpid(), SyscallSucceeds()); - ASSERT_THAT(sent_creds.uid = getuid(), SyscallSucceeds()); - ASSERT_THAT(sent_creds.gid = getgid(), SyscallSucceeds()); - - ASSERT_NO_FATAL_FAILURE( - SendCreds(sockets->first_fd(), sent_creds, sent_data, sizeof(sent_data))); - - SetSoPassCred(sockets->second_fd()); - - struct msghdr msg = {}; - char control[CMSG_SPACE(sizeof(struct ucred))]; - msg.msg_control = control; - msg.msg_controllen = sizeof(control); - - char received_data[sizeof(sent_data)] = {}; - struct iovec iov; - iov.iov_base = received_data; - iov.iov_len = sizeof(received_data); - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - ASSERT_THAT(RetryEINTR(recvmsg)(sockets->second_fd(), &msg, 0), - SyscallSucceedsWithValue(sizeof(received_data))); - - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); - - // The control message should not be truncated. - EXPECT_EQ(msg.msg_flags, 0); - EXPECT_EQ(msg.msg_controllen, sizeof(control)); - - struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg); - ASSERT_NE(cmsg, nullptr); - EXPECT_EQ(cmsg->cmsg_len, CMSG_LEN(sizeof(struct ucred))); - EXPECT_EQ(cmsg->cmsg_level, SOL_SOCKET); - EXPECT_EQ(cmsg->cmsg_type, SCM_CREDENTIALS); -} - -// CredPassNoSpaceMsgCtrunc passes a full set of credentials. It then receives -// the data without providing space for any credentials and verifies that -// MSG_CTRUNC is set in the msghdr. -TEST_P(UnixSocketPairCmsgTest, CredPassNoSpaceMsgCtrunc) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - struct ucred sent_creds; - - ASSERT_THAT(sent_creds.pid = getpid(), SyscallSucceeds()); - ASSERT_THAT(sent_creds.uid = getuid(), SyscallSucceeds()); - ASSERT_THAT(sent_creds.gid = getgid(), SyscallSucceeds()); - - ASSERT_NO_FATAL_FAILURE( - SendCreds(sockets->first_fd(), sent_creds, sent_data, sizeof(sent_data))); - - SetSoPassCred(sockets->second_fd()); - - struct msghdr msg = {}; - char control[CMSG_SPACE(0)]; - msg.msg_control = control; - msg.msg_controllen = sizeof(control); - - char received_data[sizeof(sent_data)] = {}; - struct iovec iov; - iov.iov_base = received_data; - iov.iov_len = sizeof(received_data); - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - ASSERT_THAT(RetryEINTR(recvmsg)(sockets->second_fd(), &msg, 0), - SyscallSucceedsWithValue(sizeof(received_data))); - - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); - - // The control message should be truncated. - EXPECT_EQ(msg.msg_flags, MSG_CTRUNC); - EXPECT_EQ(msg.msg_controllen, sizeof(control)); - - struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg); - ASSERT_NE(cmsg, nullptr); - EXPECT_EQ(cmsg->cmsg_len, sizeof(control)); - EXPECT_EQ(cmsg->cmsg_level, SOL_SOCKET); - EXPECT_EQ(cmsg->cmsg_type, SCM_CREDENTIALS); -} - -// CredPassTruncatedMsgCtrunc passes a full set of credentials. It then receives -// the data while providing enough space for only the first field of the -// credentials and verifies that MSG_CTRUNC is set in the msghdr. -TEST_P(UnixSocketPairCmsgTest, CredPassTruncatedMsgCtrunc) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - struct ucred sent_creds; - - ASSERT_THAT(sent_creds.pid = getpid(), SyscallSucceeds()); - ASSERT_THAT(sent_creds.uid = getuid(), SyscallSucceeds()); - ASSERT_THAT(sent_creds.gid = getgid(), SyscallSucceeds()); - - ASSERT_NO_FATAL_FAILURE( - SendCreds(sockets->first_fd(), sent_creds, sent_data, sizeof(sent_data))); - - SetSoPassCred(sockets->second_fd()); - - struct msghdr msg = {}; - char control[CMSG_SPACE(0) + sizeof(pid_t)]; - msg.msg_control = control; - msg.msg_controllen = sizeof(control); - - char received_data[sizeof(sent_data)] = {}; - struct iovec iov; - iov.iov_base = received_data; - iov.iov_len = sizeof(received_data); - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - ASSERT_THAT(RetryEINTR(recvmsg)(sockets->second_fd(), &msg, 0), - SyscallSucceedsWithValue(sizeof(received_data))); - - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); - - // The control message should be truncated. - EXPECT_EQ(msg.msg_flags, MSG_CTRUNC); - EXPECT_EQ(msg.msg_controllen, sizeof(control)); - - struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg); - ASSERT_NE(cmsg, nullptr); - EXPECT_EQ(cmsg->cmsg_len, sizeof(control)); - EXPECT_EQ(cmsg->cmsg_level, SOL_SOCKET); - EXPECT_EQ(cmsg->cmsg_type, SCM_CREDENTIALS); -} - -TEST_P(UnixSocketPairCmsgTest, SoPassCred) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - int opt; - socklen_t optLen = sizeof(opt); - EXPECT_THAT( - getsockopt(sockets->first_fd(), SOL_SOCKET, SO_PASSCRED, &opt, &optLen), - SyscallSucceeds()); - EXPECT_FALSE(opt); - - optLen = sizeof(opt); - EXPECT_THAT( - getsockopt(sockets->second_fd(), SOL_SOCKET, SO_PASSCRED, &opt, &optLen), - SyscallSucceeds()); - EXPECT_FALSE(opt); - - SetSoPassCred(sockets->first_fd()); - - optLen = sizeof(opt); - EXPECT_THAT( - getsockopt(sockets->first_fd(), SOL_SOCKET, SO_PASSCRED, &opt, &optLen), - SyscallSucceeds()); - EXPECT_TRUE(opt); - - optLen = sizeof(opt); - EXPECT_THAT( - getsockopt(sockets->second_fd(), SOL_SOCKET, SO_PASSCRED, &opt, &optLen), - SyscallSucceeds()); - EXPECT_FALSE(opt); - - int zero = 0; - EXPECT_THAT(setsockopt(sockets->first_fd(), SOL_SOCKET, SO_PASSCRED, &zero, - sizeof(zero)), - SyscallSucceeds()); - - optLen = sizeof(opt); - EXPECT_THAT( - getsockopt(sockets->first_fd(), SOL_SOCKET, SO_PASSCRED, &opt, &optLen), - SyscallSucceeds()); - EXPECT_FALSE(opt); - - optLen = sizeof(opt); - EXPECT_THAT( - getsockopt(sockets->second_fd(), SOL_SOCKET, SO_PASSCRED, &opt, &optLen), - SyscallSucceeds()); - EXPECT_FALSE(opt); -} - -TEST_P(UnixSocketPairCmsgTest, NoDataCredPass) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - struct msghdr msg = {}; - - struct iovec iov; - iov.iov_base = sent_data; - iov.iov_len = sizeof(sent_data); - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - char control[CMSG_SPACE(0)]; - msg.msg_control = control; - msg.msg_controllen = sizeof(control); - - struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg); - cmsg->cmsg_level = SOL_SOCKET; - cmsg->cmsg_type = SCM_CREDENTIALS; - cmsg->cmsg_len = CMSG_LEN(0); - - ASSERT_THAT(RetryEINTR(sendmsg)(sockets->first_fd(), &msg, 0), - SyscallFailsWithErrno(EINVAL)); -} - -TEST_P(UnixSocketPairCmsgTest, NoPassCred) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - struct ucred sent_creds; - - ASSERT_THAT(sent_creds.pid = getpid(), SyscallSucceeds()); - ASSERT_THAT(sent_creds.uid = getuid(), SyscallSucceeds()); - ASSERT_THAT(sent_creds.gid = getgid(), SyscallSucceeds()); - - ASSERT_NO_FATAL_FAILURE( - SendCreds(sockets->first_fd(), sent_creds, sent_data, sizeof(sent_data))); - - char received_data[20]; - - ASSERT_NO_FATAL_FAILURE( - RecvNoCmsg(sockets->second_fd(), received_data, sizeof(received_data))); - - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); -} - -TEST_P(UnixSocketPairCmsgTest, CredAndFDPass) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - struct ucred sent_creds; - - ASSERT_THAT(sent_creds.pid = getpid(), SyscallSucceeds()); - ASSERT_THAT(sent_creds.uid = getuid(), SyscallSucceeds()); - ASSERT_THAT(sent_creds.gid = getgid(), SyscallSucceeds()); - - auto pair = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - - ASSERT_NO_FATAL_FAILURE(SendCredsAndFD(sockets->first_fd(), sent_creds, - pair->second_fd(), sent_data, - sizeof(sent_data))); - - SetSoPassCred(sockets->second_fd()); - - char received_data[20]; - struct ucred received_creds; - int fd = -1; - ASSERT_NO_FATAL_FAILURE(RecvCredsAndFD(sockets->second_fd(), &received_creds, - &fd, received_data, - sizeof(received_data))); - - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); - - EXPECT_EQ(sent_creds.pid, received_creds.pid); - EXPECT_EQ(sent_creds.uid, received_creds.uid); - EXPECT_EQ(sent_creds.gid, received_creds.gid); - - ASSERT_NO_FATAL_FAILURE(TransferTest(fd, pair->first_fd())); -} - -TEST_P(UnixSocketPairCmsgTest, FDPassBeforeSoPassCred) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - auto pair = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - - ASSERT_NO_FATAL_FAILURE(SendSingleFD(sockets->first_fd(), pair->second_fd(), - sent_data, sizeof(sent_data))); - - SetSoPassCred(sockets->second_fd()); - - char received_data[20]; - struct ucred received_creds; - int fd = -1; - ASSERT_NO_FATAL_FAILURE(RecvCredsAndFD(sockets->second_fd(), &received_creds, - &fd, received_data, - sizeof(received_data))); - - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); - - struct ucred want_creds { - 0, 65534, 65534 - }; - - EXPECT_EQ(want_creds.pid, received_creds.pid); - EXPECT_EQ(want_creds.uid, received_creds.uid); - EXPECT_EQ(want_creds.gid, received_creds.gid); - - ASSERT_NO_FATAL_FAILURE(TransferTest(fd, pair->first_fd())); -} - -TEST_P(UnixSocketPairCmsgTest, FDPassAfterSoPassCred) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - auto pair = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - - SetSoPassCred(sockets->second_fd()); - - ASSERT_NO_FATAL_FAILURE(SendSingleFD(sockets->first_fd(), pair->second_fd(), - sent_data, sizeof(sent_data))); - - char received_data[20]; - struct ucred received_creds; - int fd = -1; - ASSERT_NO_FATAL_FAILURE(RecvCredsAndFD(sockets->second_fd(), &received_creds, - &fd, received_data, - sizeof(received_data))); - - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); - - struct ucred want_creds; - ASSERT_THAT(want_creds.pid = getpid(), SyscallSucceeds()); - ASSERT_THAT(want_creds.uid = getuid(), SyscallSucceeds()); - ASSERT_THAT(want_creds.gid = getgid(), SyscallSucceeds()); - - EXPECT_EQ(want_creds.pid, received_creds.pid); - EXPECT_EQ(want_creds.uid, received_creds.uid); - EXPECT_EQ(want_creds.gid, received_creds.gid); - - ASSERT_NO_FATAL_FAILURE(TransferTest(fd, pair->first_fd())); -} - -TEST_P(UnixSocketPairCmsgTest, CloexecDroppedWhenFDPassed) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - auto pair = ASSERT_NO_ERRNO_AND_VALUE( - UnixDomainSocketPair(SOCK_SEQPACKET | SOCK_CLOEXEC).Create()); - - ASSERT_NO_FATAL_FAILURE(SendSingleFD(sockets->first_fd(), pair->second_fd(), - sent_data, sizeof(sent_data))); - - char received_data[20]; - int fd = -1; - ASSERT_NO_FATAL_FAILURE(RecvSingleFD(sockets->second_fd(), &fd, received_data, - sizeof(received_data))); - - EXPECT_THAT(fcntl(fd, F_GETFD), SyscallSucceedsWithValue(0)); -} - -TEST_P(UnixSocketPairCmsgTest, CloexecRecvFDPass) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - auto pair = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - - ASSERT_NO_FATAL_FAILURE(SendSingleFD(sockets->first_fd(), pair->second_fd(), - sent_data, sizeof(sent_data))); - - struct msghdr msg = {}; - char control[CMSG_SPACE(sizeof(int))]; - msg.msg_control = control; - msg.msg_controllen = sizeof(control); - - struct iovec iov; - char received_data[20]; - iov.iov_base = received_data; - iov.iov_len = sizeof(received_data); - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - ASSERT_THAT(RetryEINTR(recvmsg)(sockets->second_fd(), &msg, MSG_CMSG_CLOEXEC), - SyscallSucceedsWithValue(sizeof(received_data))); - struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg); - ASSERT_NE(cmsg, nullptr); - ASSERT_EQ(cmsg->cmsg_len, CMSG_LEN(sizeof(int))); - ASSERT_EQ(cmsg->cmsg_level, SOL_SOCKET); - ASSERT_EQ(cmsg->cmsg_type, SCM_RIGHTS); - - int fd = -1; - memcpy(&fd, CMSG_DATA(cmsg), sizeof(int)); - - EXPECT_THAT(fcntl(fd, F_GETFD), SyscallSucceedsWithValue(FD_CLOEXEC)); -} - -TEST_P(UnixSocketPairCmsgTest, FDPassAfterSoPassCredWithoutCredSpace) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - auto pair = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - - SetSoPassCred(sockets->second_fd()); - - ASSERT_NO_FATAL_FAILURE(SendSingleFD(sockets->first_fd(), pair->second_fd(), - sent_data, sizeof(sent_data))); - - struct msghdr msg = {}; - char control[CMSG_LEN(0)]; - msg.msg_control = control; - msg.msg_controllen = sizeof(control); - - char received_data[20]; - struct iovec iov; - iov.iov_base = received_data; - iov.iov_len = sizeof(received_data); - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - ASSERT_THAT(RetryEINTR(recvmsg)(sockets->second_fd(), &msg, 0), - SyscallSucceedsWithValue(sizeof(received_data))); - - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); - - EXPECT_EQ(msg.msg_controllen, sizeof(control)); - - struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg); - ASSERT_NE(cmsg, nullptr); - EXPECT_EQ(cmsg->cmsg_len, sizeof(control)); - EXPECT_EQ(cmsg->cmsg_level, SOL_SOCKET); - EXPECT_EQ(cmsg->cmsg_type, SCM_CREDENTIALS); -} - -// This test will validate that MSG_CTRUNC as an input flag to recvmsg will -// not appear as an output flag on the control message when truncation doesn't -// happen. -TEST_P(UnixSocketPairCmsgTest, MsgCtruncInputIsNoop) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - auto pair = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - - ASSERT_NO_FATAL_FAILURE(SendSingleFD(sockets->first_fd(), pair->second_fd(), - sent_data, sizeof(sent_data))); - - struct msghdr msg = {}; - char control[CMSG_SPACE(sizeof(int)) /* we're passing a single fd */]; - msg.msg_control = control; - msg.msg_controllen = sizeof(control); - - struct iovec iov; - char received_data[20]; - iov.iov_base = received_data; - iov.iov_len = sizeof(received_data); - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - ASSERT_THAT(RetryEINTR(recvmsg)(sockets->second_fd(), &msg, MSG_CTRUNC), - SyscallSucceedsWithValue(sizeof(received_data))); - struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg); - ASSERT_NE(cmsg, nullptr); - ASSERT_EQ(cmsg->cmsg_len, CMSG_LEN(sizeof(int))); - ASSERT_EQ(cmsg->cmsg_level, SOL_SOCKET); - ASSERT_EQ(cmsg->cmsg_type, SCM_RIGHTS); - - // Now we should verify that MSG_CTRUNC wasn't set as an output flag. - EXPECT_EQ(msg.msg_flags & MSG_CTRUNC, 0); -} - -TEST_P(UnixSocketPairCmsgTest, FDPassAfterSoPassCredWithoutCredHeaderSpace) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - auto pair = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - - SetSoPassCred(sockets->second_fd()); - - ASSERT_NO_FATAL_FAILURE(SendSingleFD(sockets->first_fd(), pair->second_fd(), - sent_data, sizeof(sent_data))); - - struct msghdr msg = {}; - char control[CMSG_LEN(0) / 2]; - msg.msg_control = control; - msg.msg_controllen = sizeof(control); - - char received_data[20]; - struct iovec iov; - iov.iov_base = received_data; - iov.iov_len = sizeof(received_data); - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - ASSERT_THAT(RetryEINTR(recvmsg)(sockets->second_fd(), &msg, 0), - SyscallSucceedsWithValue(sizeof(received_data))); - - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); - EXPECT_EQ(msg.msg_controllen, 0); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_unix_cmsg.h b/test/syscalls/linux/socket_unix_cmsg.h deleted file mode 100644 index 431606903..000000000 --- a/test/syscalls/linux/socket_unix_cmsg.h +++ /dev/null @@ -1,30 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_SYSCALLS_LINUX_SOCKET_UNIX_CMSG_H_ -#define GVISOR_TEST_SYSCALLS_LINUX_SOCKET_UNIX_CMSG_H_ - -#include "test/syscalls/linux/socket_test_util.h" - -namespace gvisor { -namespace testing { - -// Test fixture for tests that apply to pairs of connected unix sockets about -// control messages. -using UnixSocketPairCmsgTest = SocketPairTest; - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_SYSCALLS_LINUX_SOCKET_UNIX_CMSG_H_ diff --git a/test/syscalls/linux/socket_unix_dgram.cc b/test/syscalls/linux/socket_unix_dgram.cc deleted file mode 100644 index af0df4fb4..000000000 --- a/test/syscalls/linux/socket_unix_dgram.cc +++ /dev/null @@ -1,45 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/syscalls/linux/socket_unix_dgram.h" - -#include <stdio.h> -#include <sys/un.h> - -#include "gtest/gtest.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -TEST_P(DgramUnixSocketPairTest, WriteOneSideClosed) { - // FIXME(b/35925052): gVisor datagram sockets return EPIPE instead of - // ECONNREFUSED. - SKIP_IF(IsRunningOnGvisor()); - - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - ASSERT_THAT(close(sockets->release_first_fd()), SyscallSucceeds()); - constexpr char kStr[] = "abc"; - ASSERT_THAT(write(sockets->second_fd(), kStr, 3), - SyscallFailsWithErrno(ECONNREFUSED)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_unix_dgram.h b/test/syscalls/linux/socket_unix_dgram.h deleted file mode 100644 index 0764ef85b..000000000 --- a/test/syscalls/linux/socket_unix_dgram.h +++ /dev/null @@ -1,29 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_SYSCALLS_LINUX_SOCKET_UNIX_DGRAM_H_ -#define GVISOR_TEST_SYSCALLS_LINUX_SOCKET_UNIX_DGRAM_H_ - -#include "test/syscalls/linux/socket_test_util.h" - -namespace gvisor { -namespace testing { - -// Test fixture for tests that apply to pairs of connected dgram unix sockets. -using DgramUnixSocketPairTest = SocketPairTest; - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_SYSCALLS_LINUX_SOCKET_UNIX_DGRAM_H_ diff --git a/test/syscalls/linux/socket_unix_dgram_local.cc b/test/syscalls/linux/socket_unix_dgram_local.cc deleted file mode 100644 index 31d2d5216..000000000 --- a/test/syscalls/linux/socket_unix_dgram_local.cc +++ /dev/null @@ -1,58 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <vector> - -#include "test/syscalls/linux/socket_non_stream.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/socket_unix_dgram.h" -#include "test/syscalls/linux/socket_unix_non_stream.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -std::vector<SocketPairKind> GetSocketPairs() { - return VecCat<SocketPairKind>(VecCat<SocketPairKind>( - ApplyVec<SocketPairKind>( - UnixDomainSocketPair, - AllBitwiseCombinations(List<int>{SOCK_DGRAM, SOCK_RAW}, - List<int>{0, SOCK_NONBLOCK})), - ApplyVec<SocketPairKind>( - FilesystemBoundUnixDomainSocketPair, - AllBitwiseCombinations(List<int>{SOCK_DGRAM, SOCK_RAW}, - List<int>{0, SOCK_NONBLOCK})), - ApplyVec<SocketPairKind>( - AbstractBoundUnixDomainSocketPair, - AllBitwiseCombinations(List<int>{SOCK_DGRAM, SOCK_RAW}, - List<int>{0, SOCK_NONBLOCK})))); -} - -INSTANTIATE_TEST_SUITE_P( - DgramUnixSockets, DgramUnixSocketPairTest, - ::testing::ValuesIn(IncludeReversals(GetSocketPairs()))); - -INSTANTIATE_TEST_SUITE_P( - DgramUnixSockets, UnixNonStreamSocketPairTest, - ::testing::ValuesIn(IncludeReversals(GetSocketPairs()))); - -INSTANTIATE_TEST_SUITE_P( - DgramUnixSockets, NonStreamSocketPairTest, - ::testing::ValuesIn(IncludeReversals(GetSocketPairs()))); - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_unix_dgram_non_blocking.cc b/test/syscalls/linux/socket_unix_dgram_non_blocking.cc deleted file mode 100644 index 2db8b68d3..000000000 --- a/test/syscalls/linux/socket_unix_dgram_non_blocking.cc +++ /dev/null @@ -1,57 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <stdio.h> -#include <sys/un.h> - -#include "gtest/gtest.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -// Test fixture for tests that apply to pairs of connected non-blocking dgram -// unix sockets. -using NonBlockingDgramUnixSocketPairTest = SocketPairTest; - -TEST_P(NonBlockingDgramUnixSocketPairTest, ReadOneSideClosed) { - if (IsRunningOnGvisor()) { - // FIXME(b/70803293): gVisor datagram sockets return 0 instead of - // EAGAIN. - return; - } - - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - ASSERT_THAT(close(sockets->release_first_fd()), SyscallSucceeds()); - char data[10] = {}; - ASSERT_THAT(read(sockets->second_fd(), data, sizeof(data)), - SyscallFailsWithErrno(EAGAIN)); -} - -INSTANTIATE_TEST_SUITE_P( - NonBlockingDgramUnixSockets, NonBlockingDgramUnixSocketPairTest, - ::testing::ValuesIn(IncludeReversals(std::vector<SocketPairKind>{ - UnixDomainSocketPair(SOCK_DGRAM | SOCK_NONBLOCK), - FilesystemBoundUnixDomainSocketPair(SOCK_DGRAM | SOCK_NONBLOCK), - AbstractBoundUnixDomainSocketPair(SOCK_DGRAM | SOCK_NONBLOCK), - }))); - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_unix_domain.cc b/test/syscalls/linux/socket_unix_domain.cc deleted file mode 100644 index f7dff8b4d..000000000 --- a/test/syscalls/linux/socket_unix_domain.cc +++ /dev/null @@ -1,39 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <vector> - -#include "test/syscalls/linux/socket_generic.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -std::vector<SocketPairKind> GetSocketPairs() { - return ApplyVec<SocketPairKind>( - UnixDomainSocketPair, - AllBitwiseCombinations(List<int>{SOCK_STREAM, SOCK_DGRAM, SOCK_SEQPACKET}, - List<int>{0, SOCK_NONBLOCK})); -} - -INSTANTIATE_TEST_SUITE_P( - AllUnixDomainSockets, AllSocketPairTest, - ::testing::ValuesIn(IncludeReversals(GetSocketPairs()))); - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_unix_filesystem_nonblock.cc b/test/syscalls/linux/socket_unix_filesystem_nonblock.cc deleted file mode 100644 index 6700b4d90..000000000 --- a/test/syscalls/linux/socket_unix_filesystem_nonblock.cc +++ /dev/null @@ -1,39 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <vector> - -#include "test/syscalls/linux/socket_non_blocking.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -std::vector<SocketPairKind> GetSocketPairs() { - return ApplyVec<SocketPairKind>( - FilesystemBoundUnixDomainSocketPair, - AllBitwiseCombinations(List<int>{SOCK_STREAM, SOCK_DGRAM, SOCK_SEQPACKET}, - List<int>{SOCK_NONBLOCK})); -} - -INSTANTIATE_TEST_SUITE_P( - NonBlockingFilesystemUnixSockets, NonBlockingSocketPairTest, - ::testing::ValuesIn(IncludeReversals(GetSocketPairs()))); - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_unix_non_stream.cc b/test/syscalls/linux/socket_unix_non_stream.cc deleted file mode 100644 index 884319e1d..000000000 --- a/test/syscalls/linux/socket_unix_non_stream.cc +++ /dev/null @@ -1,256 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/syscalls/linux/socket_unix_non_stream.h" - -#include <stdio.h> -#include <sys/mman.h> -#include <sys/un.h> - -#include "gtest/gtest.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/memory_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -TEST_P(UnixNonStreamSocketPairTest, RecvMsgTooLarge) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - int rcvbuf; - socklen_t length = sizeof(rcvbuf); - ASSERT_THAT( - getsockopt(sockets->first_fd(), SOL_SOCKET, SO_RCVBUF, &rcvbuf, &length), - SyscallSucceeds()); - - // Make the call larger than the receive buffer. - const int recv_size = 3 * rcvbuf; - - // Write a message that does fit in the receive buffer. - const int write_size = rcvbuf - kPageSize; - - std::vector<char> write_buf(write_size, 'a'); - const int ret = RetryEINTR(write)(sockets->second_fd(), write_buf.data(), - write_buf.size()); - if (ret < 0 && errno == ENOBUFS) { - // NOTE(b/116636318): Linux may stall the write for a long time and - // ultimately return ENOBUFS. Allow this error, since a retry will likely - // result in the same error. - return; - } - ASSERT_THAT(ret, SyscallSucceeds()); - - std::vector<char> recv_buf(recv_size); - - ASSERT_NO_FATAL_FAILURE(RecvNoCmsg(sockets->first_fd(), recv_buf.data(), - recv_buf.size(), write_size)); - - recv_buf.resize(write_size); - EXPECT_EQ(recv_buf, write_buf); -} - -// Create a region of anonymous memory of size 'size', which is fragmented in -// FileMem. -// -// ptr contains the start address of the region. The returned vector contains -// all of the mappings to be unmapped when done. -PosixErrorOr<std::vector<Mapping>> CreateFragmentedRegion(const int size, - void** ptr) { - Mapping region; - ASSIGN_OR_RETURN_ERRNO(region, Mmap(nullptr, size, PROT_NONE, - MAP_ANONYMOUS | MAP_PRIVATE, -1, 0)); - - *ptr = region.ptr(); - - // Don't save hundreds of times for all of these mmaps. - DisableSave ds; - - std::vector<Mapping> pages; - - // Map and commit a single page at a time, mapping and committing an unrelated - // page between each call to force FileMem fragmentation. - for (uintptr_t addr = region.addr(); addr < region.endaddr(); - addr += kPageSize) { - Mapping page; - ASSIGN_OR_RETURN_ERRNO( - page, - Mmap(reinterpret_cast<void*>(addr), kPageSize, PROT_READ | PROT_WRITE, - MAP_ANONYMOUS | MAP_PRIVATE | MAP_FIXED, -1, 0)); - *reinterpret_cast<volatile char*>(page.ptr()) = 42; - - pages.emplace_back(std::move(page)); - - // Unrelated page elsewhere. - ASSIGN_OR_RETURN_ERRNO(page, - Mmap(nullptr, kPageSize, PROT_READ | PROT_WRITE, - MAP_ANONYMOUS | MAP_PRIVATE, -1, 0)); - *reinterpret_cast<volatile char*>(page.ptr()) = 42; - - pages.emplace_back(std::move(page)); - } - - // The mappings above have taken ownership of the region. - region.release(); - - return std::move(pages); -} - -// A contiguous iov that is heavily fragmented in FileMem can still be sent -// successfully. See b/115833655. -TEST_P(UnixNonStreamSocketPairTest, FragmentedSendMsg) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - const int buffer_size = UIO_MAXIOV * kPageSize; - // Extra page for message header overhead. - const int sndbuf = buffer_size + kPageSize; - // N.B. setsockopt(SO_SNDBUF) doubles the passed value. - const int set_sndbuf = sndbuf / 2; - - EXPECT_THAT(setsockopt(sockets->first_fd(), SOL_SOCKET, SO_SNDBUF, - &set_sndbuf, sizeof(set_sndbuf)), - SyscallSucceeds()); - - int actual_sndbuf = 0; - socklen_t length = sizeof(actual_sndbuf); - ASSERT_THAT(getsockopt(sockets->first_fd(), SOL_SOCKET, SO_SNDBUF, - &actual_sndbuf, &length), - SyscallSucceeds()); - - if (actual_sndbuf != sndbuf) { - // Unable to get the sndbuf we want. - // - // N.B. At minimum, the socketpair gofer should provide a socket that is - // already the correct size. - // - // TODO(b/35921550): When internal UDS support SO_SNDBUF, we can assert that - // we always get the right SO_SNDBUF on gVisor. - GTEST_SKIP() << "SO_SNDBUF = " << actual_sndbuf << ", want " << sndbuf; - } - - // Create a contiguous region of memory of 2*UIO_MAXIOV*PAGE_SIZE. We'll call - // sendmsg with a single iov, but the goal is to get the sentry to split this - // into > UIO_MAXIOV iovs when calling the kernel. - void* ptr; - std::vector<Mapping> pages = - ASSERT_NO_ERRNO_AND_VALUE(CreateFragmentedRegion(buffer_size, &ptr)); - - struct iovec iov = {}; - iov.iov_base = ptr; - iov.iov_len = buffer_size; - - struct msghdr msg = {}; - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - // NOTE(b/116636318,b/115833655): Linux has poor behavior in the presence of - // physical memory fragmentation. As a result, this may stall for a long time - // and ultimately return ENOBUFS. Allow this error, since it means that we - // made it to the host kernel and started the sendmsg. - EXPECT_THAT(RetryEINTR(sendmsg)(sockets->first_fd(), &msg, 0), - AnyOf(SyscallSucceedsWithValue(buffer_size), - SyscallFailsWithErrno(ENOBUFS))); -} - -// A contiguous iov that is heavily fragmented in FileMem can still be received -// into successfully. Regression test for b/115833655. -TEST_P(UnixNonStreamSocketPairTest, FragmentedRecvMsg) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - const int buffer_size = UIO_MAXIOV * kPageSize; - // Extra page for message header overhead. - const int sndbuf = buffer_size + kPageSize; - // N.B. setsockopt(SO_SNDBUF) doubles the passed value. - const int set_sndbuf = sndbuf / 2; - - EXPECT_THAT(setsockopt(sockets->first_fd(), SOL_SOCKET, SO_SNDBUF, - &set_sndbuf, sizeof(set_sndbuf)), - SyscallSucceeds()); - - int actual_sndbuf = 0; - socklen_t length = sizeof(actual_sndbuf); - ASSERT_THAT(getsockopt(sockets->first_fd(), SOL_SOCKET, SO_SNDBUF, - &actual_sndbuf, &length), - SyscallSucceeds()); - - if (actual_sndbuf != sndbuf) { - // Unable to get the sndbuf we want. - // - // N.B. At minimum, the socketpair gofer should provide a socket that is - // already the correct size. - // - // TODO(b/35921550): When internal UDS support SO_SNDBUF, we can assert that - // we always get the right SO_SNDBUF on gVisor. - GTEST_SKIP() << "SO_SNDBUF = " << actual_sndbuf << ", want " << sndbuf; - } - - std::vector<char> write_buf(buffer_size, 'a'); - const int ret = RetryEINTR(write)(sockets->first_fd(), write_buf.data(), - write_buf.size()); - if (ret < 0 && errno == ENOBUFS) { - // NOTE(b/116636318): Linux may stall the write for a long time and - // ultimately return ENOBUFS. Allow this error, since a retry will likely - // result in the same error. - return; - } - ASSERT_THAT(ret, SyscallSucceeds()); - - // Create a contiguous region of memory of 2*UIO_MAXIOV*PAGE_SIZE. We'll call - // sendmsg with a single iov, but the goal is to get the sentry to split this - // into > UIO_MAXIOV iovs when calling the kernel. - void* ptr; - std::vector<Mapping> pages = - ASSERT_NO_ERRNO_AND_VALUE(CreateFragmentedRegion(buffer_size, &ptr)); - - ASSERT_NO_FATAL_FAILURE(RecvNoCmsg( - sockets->second_fd(), reinterpret_cast<char*>(ptr), buffer_size)); - - EXPECT_EQ(0, memcmp(write_buf.data(), ptr, buffer_size)); -} - -TEST_P(UnixNonStreamSocketPairTest, SendTimeout) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - struct timeval tv { - .tv_sec = 0, .tv_usec = 10 - }; - EXPECT_THAT( - setsockopt(sockets->first_fd(), SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv)), - SyscallSucceeds()); - - const int buf_size = 5 * kPageSize; - EXPECT_THAT(setsockopt(sockets->first_fd(), SOL_SOCKET, SO_SNDBUF, &buf_size, - sizeof(buf_size)), - SyscallSucceeds()); - EXPECT_THAT(setsockopt(sockets->second_fd(), SOL_SOCKET, SO_RCVBUF, &buf_size, - sizeof(buf_size)), - SyscallSucceeds()); - - // The buffer size should be big enough to avoid many iterations in the next - // loop. Otherwise, this will slow down cooperative_save tests. - std::vector<char> buf(kPageSize); - for (;;) { - int ret; - ASSERT_THAT( - ret = RetryEINTR(send)(sockets->first_fd(), buf.data(), buf.size(), 0), - ::testing::AnyOf(SyscallSucceeds(), SyscallFailsWithErrno(EAGAIN))); - if (ret == -1) { - break; - } - } -} - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_unix_non_stream.h b/test/syscalls/linux/socket_unix_non_stream.h deleted file mode 100644 index 7478ab172..000000000 --- a/test/syscalls/linux/socket_unix_non_stream.h +++ /dev/null @@ -1,30 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_SYSCALLS_LINUX_SOCKET_UNIX_NON_STREAM_H_ -#define GVISOR_TEST_SYSCALLS_LINUX_SOCKET_UNIX_NON_STREAM_H_ - -#include "test/syscalls/linux/socket_test_util.h" - -namespace gvisor { -namespace testing { - -// Test fixture for tests that apply to pairs of connected non-stream -// unix-domain sockets. -using UnixNonStreamSocketPairTest = SocketPairTest; - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_SYSCALLS_LINUX_SOCKET_UNIX_NON_STREAM_H_ diff --git a/test/syscalls/linux/socket_unix_non_stream_blocking_local.cc b/test/syscalls/linux/socket_unix_non_stream_blocking_local.cc deleted file mode 100644 index fddcdf1c5..000000000 --- a/test/syscalls/linux/socket_unix_non_stream_blocking_local.cc +++ /dev/null @@ -1,42 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <vector> - -#include "test/syscalls/linux/socket_non_stream_blocking.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -std::vector<SocketPairKind> GetSocketPairs() { - return VecCat<SocketPairKind>( - ApplyVec<SocketPairKind>(UnixDomainSocketPair, - std::vector<int>{SOCK_DGRAM, SOCK_SEQPACKET}), - ApplyVec<SocketPairKind>(FilesystemBoundUnixDomainSocketPair, - std::vector<int>{SOCK_DGRAM, SOCK_SEQPACKET}), - ApplyVec<SocketPairKind>(AbstractBoundUnixDomainSocketPair, - std::vector<int>{SOCK_DGRAM, SOCK_SEQPACKET})); -} - -INSTANTIATE_TEST_SUITE_P( - BlockingNonStreamUnixSockets, BlockingNonStreamSocketPairTest, - ::testing::ValuesIn(IncludeReversals(GetSocketPairs()))); - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_unix_pair.cc b/test/syscalls/linux/socket_unix_pair.cc deleted file mode 100644 index 85999db04..000000000 --- a/test/syscalls/linux/socket_unix_pair.cc +++ /dev/null @@ -1,44 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <vector> - -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/socket_unix.h" -#include "test/syscalls/linux/socket_unix_cmsg.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -std::vector<SocketPairKind> GetSocketPairs() { - return VecCat<SocketPairKind>(ApplyVec<SocketPairKind>( - UnixDomainSocketPair, - AllBitwiseCombinations(List<int>{SOCK_STREAM, SOCK_DGRAM, SOCK_SEQPACKET}, - List<int>{0, SOCK_NONBLOCK}))); -} - -INSTANTIATE_TEST_SUITE_P( - AllUnixDomainSockets, UnixSocketPairTest, - ::testing::ValuesIn(IncludeReversals(GetSocketPairs()))); - -INSTANTIATE_TEST_SUITE_P( - AllUnixDomainSockets, UnixSocketPairCmsgTest, - ::testing::ValuesIn(IncludeReversals(GetSocketPairs()))); - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_unix_pair_nonblock.cc b/test/syscalls/linux/socket_unix_pair_nonblock.cc deleted file mode 100644 index 281410a9a..000000000 --- a/test/syscalls/linux/socket_unix_pair_nonblock.cc +++ /dev/null @@ -1,39 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <vector> - -#include "test/syscalls/linux/socket_non_blocking.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -std::vector<SocketPairKind> GetSocketPairs() { - return ApplyVec<SocketPairKind>( - UnixDomainSocketPair, - AllBitwiseCombinations(List<int>{SOCK_STREAM, SOCK_DGRAM, SOCK_SEQPACKET}, - List<int>{SOCK_NONBLOCK})); -} - -INSTANTIATE_TEST_SUITE_P( - NonBlockingUnixSockets, NonBlockingSocketPairTest, - ::testing::ValuesIn(IncludeReversals(GetSocketPairs()))); - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_unix_seqpacket.cc b/test/syscalls/linux/socket_unix_seqpacket.cc deleted file mode 100644 index 84d3a569e..000000000 --- a/test/syscalls/linux/socket_unix_seqpacket.cc +++ /dev/null @@ -1,49 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/syscalls/linux/socket_unix_seqpacket.h" - -#include <stdio.h> -#include <sys/un.h> - -#include "gtest/gtest.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -TEST_P(SeqpacketUnixSocketPairTest, WriteOneSideClosed) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - ASSERT_THAT(close(sockets->release_first_fd()), SyscallSucceeds()); - constexpr char kStr[] = "abc"; - ASSERT_THAT(write(sockets->second_fd(), kStr, 3), - SyscallFailsWithErrno(EPIPE)); -} - -TEST_P(SeqpacketUnixSocketPairTest, ReadOneSideClosed) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - ASSERT_THAT(close(sockets->release_first_fd()), SyscallSucceeds()); - char data[10] = {}; - ASSERT_THAT(read(sockets->second_fd(), data, sizeof(data)), - SyscallSucceedsWithValue(0)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_unix_seqpacket.h b/test/syscalls/linux/socket_unix_seqpacket.h deleted file mode 100644 index 30d9b9edf..000000000 --- a/test/syscalls/linux/socket_unix_seqpacket.h +++ /dev/null @@ -1,30 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_SYSCALLS_LINUX_SOCKET_UNIX_SEQPACKET_H_ -#define GVISOR_TEST_SYSCALLS_LINUX_SOCKET_UNIX_SEQPACKET_H_ - -#include "test/syscalls/linux/socket_test_util.h" - -namespace gvisor { -namespace testing { - -// Test fixture for tests that apply to pairs of connected seqpacket unix -// sockets. -using SeqpacketUnixSocketPairTest = SocketPairTest; - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_SYSCALLS_LINUX_SOCKET_UNIX_SEQPACKET_H_ diff --git a/test/syscalls/linux/socket_unix_seqpacket_local.cc b/test/syscalls/linux/socket_unix_seqpacket_local.cc deleted file mode 100644 index 69a5f150d..000000000 --- a/test/syscalls/linux/socket_unix_seqpacket_local.cc +++ /dev/null @@ -1,58 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <vector> - -#include "test/syscalls/linux/socket_non_stream.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/socket_unix_non_stream.h" -#include "test/syscalls/linux/socket_unix_seqpacket.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -std::vector<SocketPairKind> GetSocketPairs() { - return VecCat<SocketPairKind>(VecCat<SocketPairKind>( - ApplyVec<SocketPairKind>( - UnixDomainSocketPair, - AllBitwiseCombinations(List<int>{SOCK_SEQPACKET}, - List<int>{0, SOCK_NONBLOCK})), - ApplyVec<SocketPairKind>( - FilesystemBoundUnixDomainSocketPair, - AllBitwiseCombinations(List<int>{SOCK_SEQPACKET}, - List<int>{0, SOCK_NONBLOCK})), - ApplyVec<SocketPairKind>( - AbstractBoundUnixDomainSocketPair, - AllBitwiseCombinations(List<int>{SOCK_SEQPACKET}, - List<int>{0, SOCK_NONBLOCK})))); -} - -INSTANTIATE_TEST_SUITE_P( - SeqpacketUnixSockets, NonStreamSocketPairTest, - ::testing::ValuesIn(IncludeReversals(GetSocketPairs()))); - -INSTANTIATE_TEST_SUITE_P( - SeqpacketUnixSockets, SeqpacketUnixSocketPairTest, - ::testing::ValuesIn(IncludeReversals(GetSocketPairs()))); - -INSTANTIATE_TEST_SUITE_P( - SeqpacketUnixSockets, UnixNonStreamSocketPairTest, - ::testing::ValuesIn(IncludeReversals(GetSocketPairs()))); - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_unix_stream.cc b/test/syscalls/linux/socket_unix_stream.cc deleted file mode 100644 index 563467365..000000000 --- a/test/syscalls/linux/socket_unix_stream.cc +++ /dev/null @@ -1,111 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <poll.h> -#include <stdio.h> -#include <sys/un.h> - -#include "gtest/gtest.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -// Test fixture for tests that apply to pairs of connected stream unix sockets. -using StreamUnixSocketPairTest = SocketPairTest; - -TEST_P(StreamUnixSocketPairTest, WriteOneSideClosed) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - ASSERT_THAT(close(sockets->release_first_fd()), SyscallSucceeds()); - constexpr char kStr[] = "abc"; - ASSERT_THAT(write(sockets->second_fd(), kStr, 3), - SyscallFailsWithErrno(EPIPE)); -} - -TEST_P(StreamUnixSocketPairTest, ReadOneSideClosed) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - ASSERT_THAT(close(sockets->release_first_fd()), SyscallSucceeds()); - char data[10] = {}; - ASSERT_THAT(read(sockets->second_fd(), data, sizeof(data)), - SyscallSucceedsWithValue(0)); -} - -TEST_P(StreamUnixSocketPairTest, RecvmsgOneSideClosed) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - // Set timeout so that it will not wait for ever. - struct timeval tv { - .tv_sec = 0, .tv_usec = 10 - }; - EXPECT_THAT(setsockopt(sockets->second_fd(), SOL_SOCKET, SO_RCVTIMEO, &tv, - sizeof(tv)), - SyscallSucceeds()); - - ASSERT_THAT(close(sockets->release_first_fd()), SyscallSucceeds()); - - char received_data[10] = {}; - struct iovec iov; - iov.iov_base = received_data; - iov.iov_len = sizeof(received_data); - struct msghdr msg = {}; - msg.msg_flags = -1; - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - ASSERT_THAT(recvmsg(sockets->second_fd(), &msg, MSG_WAITALL), - SyscallSucceedsWithValue(0)); -} - -TEST_P(StreamUnixSocketPairTest, ReadOneSideClosedWithUnreadData) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char buf[10] = {}; - ASSERT_THAT(RetryEINTR(write)(sockets->second_fd(), buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - - ASSERT_THAT(shutdown(sockets->first_fd(), SHUT_RDWR), SyscallSucceeds()); - - ASSERT_THAT(RetryEINTR(read)(sockets->second_fd(), buf, sizeof(buf)), - SyscallSucceedsWithValue(0)); - - ASSERT_THAT(close(sockets->release_first_fd()), SyscallSucceeds()); - - ASSERT_THAT(RetryEINTR(read)(sockets->second_fd(), buf, sizeof(buf)), - SyscallFailsWithErrno(ECONNRESET)); -} - -INSTANTIATE_TEST_SUITE_P( - AllUnixDomainSockets, StreamUnixSocketPairTest, - ::testing::ValuesIn(IncludeReversals(VecCat<SocketPairKind>( - ApplyVec<SocketPairKind>(UnixDomainSocketPair, - AllBitwiseCombinations(List<int>{SOCK_STREAM}, - List<int>{ - 0, SOCK_NONBLOCK})), - ApplyVec<SocketPairKind>(FilesystemBoundUnixDomainSocketPair, - AllBitwiseCombinations(List<int>{SOCK_STREAM}, - List<int>{ - 0, SOCK_NONBLOCK})), - ApplyVec<SocketPairKind>( - AbstractBoundUnixDomainSocketPair, - AllBitwiseCombinations(List<int>{SOCK_STREAM}, - List<int>{0, SOCK_NONBLOCK})))))); - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_unix_stream_blocking_local.cc b/test/syscalls/linux/socket_unix_stream_blocking_local.cc deleted file mode 100644 index 8429bd429..000000000 --- a/test/syscalls/linux/socket_unix_stream_blocking_local.cc +++ /dev/null @@ -1,40 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <vector> - -#include "test/syscalls/linux/socket_stream_blocking.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -std::vector<SocketPairKind> GetSocketPairs() { - return { - UnixDomainSocketPair(SOCK_STREAM), - FilesystemBoundUnixDomainSocketPair(SOCK_STREAM), - AbstractBoundUnixDomainSocketPair(SOCK_STREAM), - }; -} - -INSTANTIATE_TEST_SUITE_P( - BlockingStreamUnixSockets, BlockingStreamSocketPairTest, - ::testing::ValuesIn(IncludeReversals(GetSocketPairs()))); - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_unix_stream_local.cc b/test/syscalls/linux/socket_unix_stream_local.cc deleted file mode 100644 index a7e3449a9..000000000 --- a/test/syscalls/linux/socket_unix_stream_local.cc +++ /dev/null @@ -1,48 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <vector> - -#include "test/syscalls/linux/socket_stream.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -std::vector<SocketPairKind> GetSocketPairs() { - return VecCat<SocketPairKind>( - ApplyVec<SocketPairKind>( - UnixDomainSocketPair, - AllBitwiseCombinations(List<int>{SOCK_STREAM}, - List<int>{0, SOCK_NONBLOCK})), - ApplyVec<SocketPairKind>( - FilesystemBoundUnixDomainSocketPair, - AllBitwiseCombinations(List<int>{SOCK_STREAM}, - List<int>{0, SOCK_NONBLOCK})), - ApplyVec<SocketPairKind>( - AbstractBoundUnixDomainSocketPair, - AllBitwiseCombinations(List<int>{SOCK_STREAM}, - List<int>{0, SOCK_NONBLOCK}))); -} - -INSTANTIATE_TEST_SUITE_P( - StreamUnixSockets, StreamSocketPairTest, - ::testing::ValuesIn(IncludeReversals(GetSocketPairs()))); - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_unix_stream_nonblock_local.cc b/test/syscalls/linux/socket_unix_stream_nonblock_local.cc deleted file mode 100644 index 4b763c8e2..000000000 --- a/test/syscalls/linux/socket_unix_stream_nonblock_local.cc +++ /dev/null @@ -1,39 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -#include <vector> - -#include "test/syscalls/linux/socket_stream_nonblock.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { -namespace { - -std::vector<SocketPairKind> GetSocketPairs() { - return { - UnixDomainSocketPair(SOCK_STREAM | SOCK_NONBLOCK), - FilesystemBoundUnixDomainSocketPair(SOCK_STREAM | SOCK_NONBLOCK), - AbstractBoundUnixDomainSocketPair(SOCK_STREAM | SOCK_NONBLOCK), - }; -} - -INSTANTIATE_TEST_SUITE_P( - NonBlockingStreamUnixSockets, NonBlockingStreamSocketPairTest, - ::testing::ValuesIn(IncludeReversals(GetSocketPairs()))); - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_unix_unbound_abstract.cc b/test/syscalls/linux/socket_unix_unbound_abstract.cc deleted file mode 100644 index 8b1762000..000000000 --- a/test/syscalls/linux/socket_unix_unbound_abstract.cc +++ /dev/null @@ -1,116 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <stdio.h> -#include <sys/un.h> - -#include "gtest/gtest.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -// Test fixture for tests that apply to pairs of unbound abstract unix sockets. -using UnboundAbstractUnixSocketPairTest = SocketPairTest; - -TEST_P(UnboundAbstractUnixSocketPairTest, AddressAfterNull) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - struct sockaddr_un addr = - *reinterpret_cast<const struct sockaddr_un*>(sockets->first_addr()); - ASSERT_EQ(addr.sun_path[sizeof(addr.sun_path) - 1], 0); - SKIP_IF(addr.sun_path[sizeof(addr.sun_path) - 2] != 0 || - addr.sun_path[sizeof(addr.sun_path) - 3] != 0); - - addr.sun_path[sizeof(addr.sun_path) - 2] = 'a'; - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - ASSERT_THAT(bind(sockets->second_fd(), - reinterpret_cast<struct sockaddr*>(&addr), sizeof(addr)), - SyscallSucceeds()); -} - -TEST_P(UnboundAbstractUnixSocketPairTest, ShortAddressNotExtended) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - struct sockaddr_un addr = - *reinterpret_cast<const struct sockaddr_un*>(sockets->first_addr()); - ASSERT_EQ(addr.sun_path[sizeof(addr.sun_path) - 1], 0); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size() - 1), - SyscallSucceeds()); - - ASSERT_THAT(bind(sockets->second_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); -} - -TEST_P(UnboundAbstractUnixSocketPairTest, BindNothing) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - struct sockaddr_un addr = {.sun_family = AF_UNIX}; - ASSERT_THAT(bind(sockets->first_fd(), - reinterpret_cast<struct sockaddr*>(&addr), sizeof(addr)), - SyscallSucceeds()); -} - -TEST_P(UnboundAbstractUnixSocketPairTest, GetSockNameFullLength) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - sockaddr_storage addr = {}; - socklen_t addr_len = sizeof(addr); - ASSERT_THAT(getsockname(sockets->first_fd(), - reinterpret_cast<struct sockaddr*>(&addr), &addr_len), - SyscallSucceeds()); - EXPECT_EQ(addr_len, sockets->first_addr_size()); -} - -TEST_P(UnboundAbstractUnixSocketPairTest, GetSockNamePartialLength) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size() - 1), - SyscallSucceeds()); - - sockaddr_storage addr = {}; - socklen_t addr_len = sizeof(addr); - ASSERT_THAT(getsockname(sockets->first_fd(), - reinterpret_cast<struct sockaddr*>(&addr), &addr_len), - SyscallSucceeds()); - EXPECT_EQ(addr_len, sockets->first_addr_size() - 1); -} - -INSTANTIATE_TEST_SUITE_P( - AllUnixDomainSockets, UnboundAbstractUnixSocketPairTest, - ::testing::ValuesIn(ApplyVec<SocketPairKind>( - AbstractUnboundUnixDomainSocketPair, - AllBitwiseCombinations(List<int>{SOCK_STREAM, SOCK_SEQPACKET, - SOCK_DGRAM}, - List<int>{0, SOCK_NONBLOCK})))); - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_unix_unbound_dgram.cc b/test/syscalls/linux/socket_unix_unbound_dgram.cc deleted file mode 100644 index 907dca0f1..000000000 --- a/test/syscalls/linux/socket_unix_unbound_dgram.cc +++ /dev/null @@ -1,183 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <stdio.h> -#include <sys/socket.h> -#include <sys/un.h> - -#include "gtest/gtest.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -// Test fixture for tests that apply to pairs of unbound dgram unix sockets. -using UnboundDgramUnixSocketPairTest = SocketPairTest; - -TEST_P(UnboundDgramUnixSocketPairTest, BindConnect) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - ASSERT_THAT(connect(sockets->second_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); -} - -TEST_P(UnboundDgramUnixSocketPairTest, SelfConnect) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - ASSERT_THAT(connect(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); -} - -TEST_P(UnboundDgramUnixSocketPairTest, DoubleConnect) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - ASSERT_THAT(connect(sockets->second_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - ASSERT_THAT(connect(sockets->second_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); -} - -TEST_P(UnboundDgramUnixSocketPairTest, GetRemoteAddress) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - ASSERT_THAT(connect(sockets->second_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - socklen_t addressLength = sockets->first_addr_size(); - struct sockaddr_storage address = {}; - ASSERT_THAT(getpeername(sockets->second_fd(), (struct sockaddr*)(&address), - &addressLength), - SyscallSucceeds()); - EXPECT_EQ( - 0, memcmp(&address, sockets->first_addr(), sockets->first_addr_size())); -} - -TEST_P(UnboundDgramUnixSocketPairTest, Sendto) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - ASSERT_THAT(sendto(sockets->second_fd(), sent_data, sizeof(sent_data), 0, - sockets->first_addr(), sockets->first_addr_size()), - SyscallSucceedsWithValue(sizeof(sent_data))); - - char received_data[sizeof(sent_data)]; - ASSERT_THAT(ReadFd(sockets->first_fd(), received_data, sizeof(received_data)), - SyscallSucceedsWithValue(sizeof(received_data))); - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(received_data))); -} - -TEST_P(UnboundDgramUnixSocketPairTest, ZeroWriteAllowed) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - ASSERT_THAT(connect(sockets->second_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - char sent_data[3]; - // Send a zero length packet. - ASSERT_THAT(write(sockets->second_fd(), sent_data, 0), - SyscallSucceedsWithValue(0)); - // Receive the packet. - char received_data[sizeof(sent_data)]; - ASSERT_THAT(read(sockets->first_fd(), received_data, sizeof(received_data)), - SyscallSucceedsWithValue(0)); -} - -TEST_P(UnboundDgramUnixSocketPairTest, Listen) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - ASSERT_THAT(listen(sockets->first_fd(), 0), SyscallFailsWithErrno(ENOTSUP)); -} - -TEST_P(UnboundDgramUnixSocketPairTest, Accept) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - ASSERT_THAT(accept(sockets->first_fd(), nullptr, nullptr), - SyscallFailsWithErrno(ENOTSUP)); -} - -TEST_P(UnboundDgramUnixSocketPairTest, SendtoWithoutConnect) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - char data = 'a'; - ASSERT_THAT( - RetryEINTR(sendto)(sockets->second_fd(), &data, sizeof(data), 0, - sockets->first_addr(), sockets->first_addr_size()), - SyscallSucceedsWithValue(sizeof(data))); -} - -TEST_P(UnboundDgramUnixSocketPairTest, SendtoWithoutConnectPassCreds) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - SetSoPassCred(sockets->first_fd()); - char data = 'a'; - ASSERT_THAT( - RetryEINTR(sendto)(sockets->second_fd(), &data, sizeof(data), 0, - sockets->first_addr(), sockets->first_addr_size()), - SyscallSucceedsWithValue(sizeof(data))); - ucred creds; - creds.pid = -1; - char buf[sizeof(data) + 1]; - ASSERT_NO_FATAL_FAILURE( - RecvCreds(sockets->first_fd(), &creds, buf, sizeof(buf), sizeof(data))); - EXPECT_EQ(0, memcmp(&data, buf, sizeof(data))); - EXPECT_THAT(getpid(), SyscallSucceedsWithValue(creds.pid)); -} - -INSTANTIATE_TEST_SUITE_P( - AllUnixDomainSockets, UnboundDgramUnixSocketPairTest, - ::testing::ValuesIn(VecCat<SocketPairKind>( - ApplyVec<SocketPairKind>(FilesystemUnboundUnixDomainSocketPair, - AllBitwiseCombinations(List<int>{SOCK_DGRAM}, - List<int>{ - 0, SOCK_NONBLOCK})), - ApplyVec<SocketPairKind>( - AbstractUnboundUnixDomainSocketPair, - AllBitwiseCombinations(List<int>{SOCK_DGRAM}, - List<int>{0, SOCK_NONBLOCK}))))); - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_unix_unbound_filesystem.cc b/test/syscalls/linux/socket_unix_unbound_filesystem.cc deleted file mode 100644 index cab912152..000000000 --- a/test/syscalls/linux/socket_unix_unbound_filesystem.cc +++ /dev/null @@ -1,84 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <stdio.h> -#include <sys/un.h> - -#include "gtest/gtest.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -// Test fixture for tests that apply to pairs of unbound filesystem unix -// sockets. -using UnboundFilesystemUnixSocketPairTest = SocketPairTest; - -TEST_P(UnboundFilesystemUnixSocketPairTest, AddressAfterNull) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - struct sockaddr_un addr = - *reinterpret_cast<const struct sockaddr_un*>(sockets->first_addr()); - ASSERT_EQ(addr.sun_path[sizeof(addr.sun_path) - 1], 0); - SKIP_IF(addr.sun_path[sizeof(addr.sun_path) - 2] != 0 || - addr.sun_path[sizeof(addr.sun_path) - 3] != 0); - - addr.sun_path[sizeof(addr.sun_path) - 2] = 'a'; - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - ASSERT_THAT(bind(sockets->second_fd(), - reinterpret_cast<struct sockaddr*>(&addr), sizeof(addr)), - SyscallFailsWithErrno(EADDRINUSE)); -} - -TEST_P(UnboundFilesystemUnixSocketPairTest, GetSockNameLength) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - sockaddr_storage got_addr = {}; - socklen_t got_addr_len = sizeof(got_addr); - ASSERT_THAT( - getsockname(sockets->first_fd(), - reinterpret_cast<struct sockaddr*>(&got_addr), &got_addr_len), - SyscallSucceeds()); - - sockaddr_un want_addr = - *reinterpret_cast<const struct sockaddr_un*>(sockets->first_addr()); - - EXPECT_EQ(got_addr_len, - strlen(want_addr.sun_path) + 1 + sizeof(want_addr.sun_family)); -} - -INSTANTIATE_TEST_SUITE_P( - AllUnixDomainSockets, UnboundFilesystemUnixSocketPairTest, - ::testing::ValuesIn(ApplyVec<SocketPairKind>( - FilesystemUnboundUnixDomainSocketPair, - AllBitwiseCombinations(List<int>{SOCK_STREAM, SOCK_SEQPACKET, - SOCK_DGRAM}, - List<int>{0, SOCK_NONBLOCK})))); - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_unix_unbound_seqpacket.cc b/test/syscalls/linux/socket_unix_unbound_seqpacket.cc deleted file mode 100644 index cb99030f5..000000000 --- a/test/syscalls/linux/socket_unix_unbound_seqpacket.cc +++ /dev/null @@ -1,89 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <stdio.h> -#include <sys/un.h> - -#include "gtest/gtest.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -// Test fixture for tests that apply to pairs of unbound seqpacket unix sockets. -using UnboundUnixSeqpacketSocketPairTest = SocketPairTest; - -TEST_P(UnboundUnixSeqpacketSocketPairTest, SendtoWithoutConnect) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - char data = 'a'; - ASSERT_THAT(sendto(sockets->second_fd(), &data, sizeof(data), 0, - sockets->first_addr(), sockets->first_addr_size()), - SyscallFailsWithErrno(ENOTCONN)); -} - -TEST_P(UnboundUnixSeqpacketSocketPairTest, SendtoWithoutConnectIgnoresAddr) { - // FIXME(b/68223466): gVisor tries to find /foo/bar and thus returns ENOENT. - if (IsRunningOnGvisor()) { - return; - } - - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - // Even a bogus address is completely ignored. - constexpr char kPath[] = "/foo/bar"; - - // Sanity check that kPath doesn't exist. - struct stat s; - ASSERT_THAT(stat(kPath, &s), SyscallFailsWithErrno(ENOENT)); - - struct sockaddr_un addr = {}; - addr.sun_family = AF_UNIX; - memcpy(addr.sun_path, kPath, sizeof(kPath)); - - char data = 'a'; - ASSERT_THAT( - sendto(sockets->second_fd(), &data, sizeof(data), 0, - reinterpret_cast<const struct sockaddr*>(&addr), sizeof(addr)), - SyscallFailsWithErrno(ENOTCONN)); -} - -INSTANTIATE_TEST_SUITE_P( - AllUnixDomainSockets, UnboundUnixSeqpacketSocketPairTest, - ::testing::ValuesIn(IncludeReversals(VecCat<SocketPairKind>( - ApplyVec<SocketPairKind>( - FilesystemUnboundUnixDomainSocketPair, - AllBitwiseCombinations(List<int>{SOCK_SEQPACKET}, - List<int>{0, SOCK_NONBLOCK})), - ApplyVec<SocketPairKind>( - AbstractUnboundUnixDomainSocketPair, - AllBitwiseCombinations(List<int>{SOCK_SEQPACKET}, - List<int>{0, SOCK_NONBLOCK})))))); - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/socket_unix_unbound_stream.cc b/test/syscalls/linux/socket_unix_unbound_stream.cc deleted file mode 100644 index f185dded3..000000000 --- a/test/syscalls/linux/socket_unix_unbound_stream.cc +++ /dev/null @@ -1,733 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <stdio.h> -#include <sys/un.h> - -#include "gtest/gtest.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -// Test fixture for tests that apply to pairs of connected unix stream sockets. -using UnixStreamSocketPairTest = SocketPairTest; - -// FDPassPartialRead checks that sent control messages cannot be read after -// any of their associated data has been read while ignoring the control message -// by using read(2) instead of recvmsg(2). -TEST_P(UnixStreamSocketPairTest, FDPassPartialRead) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - auto pair = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - - ASSERT_NO_FATAL_FAILURE(SendSingleFD(sockets->first_fd(), pair->second_fd(), - sent_data, sizeof(sent_data))); - - char received_data[sizeof(sent_data) / 2]; - ASSERT_THAT( - ReadFd(sockets->second_fd(), received_data, sizeof(received_data)), - SyscallSucceedsWithValue(sizeof(received_data))); - - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(received_data))); - - RecvNoCmsg(sockets->second_fd(), received_data, sizeof(received_data)); - EXPECT_EQ(0, memcmp(sent_data + sizeof(received_data), received_data, - sizeof(received_data))); -} - -TEST_P(UnixStreamSocketPairTest, FDPassCoalescedRead) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data1[20]; - RandomizeBuffer(sent_data1, sizeof(sent_data1)); - - auto pair1 = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - - ASSERT_NO_FATAL_FAILURE(SendSingleFD(sockets->first_fd(), pair1->second_fd(), - sent_data1, sizeof(sent_data1))); - - char sent_data2[20]; - RandomizeBuffer(sent_data2, sizeof(sent_data2)); - - auto pair2 = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - - ASSERT_NO_FATAL_FAILURE(SendSingleFD(sockets->first_fd(), pair2->second_fd(), - sent_data2, sizeof(sent_data2))); - - char received_data[sizeof(sent_data1) + sizeof(sent_data2)]; - ASSERT_THAT( - ReadFd(sockets->second_fd(), received_data, sizeof(received_data)), - SyscallSucceedsWithValue(sizeof(received_data))); - - EXPECT_EQ(0, memcmp(sent_data1, received_data, sizeof(sent_data1))); - EXPECT_EQ(0, memcmp(sent_data2, received_data + sizeof(sent_data1), - sizeof(sent_data2))); -} - -// ZeroLengthMessageFDDiscarded checks that control messages associated with -// zero length messages are discarded. -TEST_P(UnixStreamSocketPairTest, ZeroLengthMessageFDDiscarded) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - // Zero length arrays are invalid in ISO C++, so allocate one of size 1 and - // send a length of 0. - char sent_data1[1] = {}; - - auto pair = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - - ASSERT_NO_FATAL_FAILURE( - SendSingleFD(sockets->first_fd(), pair->second_fd(), sent_data1, 0)); - - char sent_data2[20]; - RandomizeBuffer(sent_data2, sizeof(sent_data2)); - - ASSERT_THAT(WriteFd(sockets->first_fd(), sent_data2, sizeof(sent_data2)), - SyscallSucceedsWithValue(sizeof(sent_data2))); - - char received_data[sizeof(sent_data2)] = {}; - - RecvNoCmsg(sockets->second_fd(), received_data, sizeof(received_data)); - EXPECT_EQ(0, memcmp(sent_data2, received_data, sizeof(received_data))); -} - -// FDPassCoalescedRecv checks that control messages not in the first message are -// preserved in a coalesced recv. -TEST_P(UnixStreamSocketPairTest, FDPassCoalescedRecv) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - ASSERT_THAT(WriteFd(sockets->first_fd(), sent_data, sizeof(sent_data) / 2), - SyscallSucceedsWithValue(sizeof(sent_data) / 2)); - - auto pair = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - - ASSERT_NO_FATAL_FAILURE(SendSingleFD(sockets->first_fd(), pair->second_fd(), - sent_data + sizeof(sent_data) / 2, - sizeof(sent_data) / 2)); - - char received_data[sizeof(sent_data)]; - - int fd = -1; - ASSERT_NO_FATAL_FAILURE(RecvSingleFD(sockets->second_fd(), &fd, received_data, - sizeof(received_data))); - - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); - - ASSERT_NO_FATAL_FAILURE(TransferTest(fd, pair->first_fd())); -} - -// ReadsNotCoalescedAfterFDPass checks that messages after a message containing -// an FD control message are not coalesced. -TEST_P(UnixStreamSocketPairTest, ReadsNotCoalescedAfterFDPass) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - auto pair = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - - ASSERT_NO_FATAL_FAILURE(SendSingleFD(sockets->first_fd(), pair->second_fd(), - sent_data, sizeof(sent_data) / 2)); - - ASSERT_THAT(WriteFd(sockets->first_fd(), sent_data + sizeof(sent_data) / 2, - sizeof(sent_data) / 2), - SyscallSucceedsWithValue(sizeof(sent_data) / 2)); - - char received_data[sizeof(sent_data)]; - - int fd = -1; - ASSERT_NO_FATAL_FAILURE(RecvSingleFD(sockets->second_fd(), &fd, received_data, - sizeof(received_data), - sizeof(sent_data) / 2)); - - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data) / 2)); - - ASSERT_NO_FATAL_FAILURE(TransferTest(fd, pair->first_fd())); - EXPECT_THAT(close(fd), SyscallSucceeds()); - - ASSERT_NO_FATAL_FAILURE( - RecvNoCmsg(sockets->second_fd(), received_data, sizeof(sent_data) / 2)); - - EXPECT_EQ(0, memcmp(sent_data + sizeof(sent_data) / 2, received_data, - sizeof(sent_data) / 2)); -} - -// FDPassNotCombined checks that FD control messages are not combined in a -// coalesced read. -TEST_P(UnixStreamSocketPairTest, FDPassNotCombined) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - auto pair1 = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - - ASSERT_NO_FATAL_FAILURE(SendSingleFD(sockets->first_fd(), pair1->second_fd(), - sent_data, sizeof(sent_data) / 2)); - - auto pair2 = - ASSERT_NO_ERRNO_AND_VALUE(UnixDomainSocketPair(SOCK_SEQPACKET).Create()); - - ASSERT_NO_FATAL_FAILURE(SendSingleFD(sockets->first_fd(), pair2->second_fd(), - sent_data + sizeof(sent_data) / 2, - sizeof(sent_data) / 2)); - - char received_data[sizeof(sent_data)]; - - int fd = -1; - ASSERT_NO_FATAL_FAILURE(RecvSingleFD(sockets->second_fd(), &fd, received_data, - sizeof(received_data), - sizeof(sent_data) / 2)); - - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data) / 2)); - - ASSERT_NO_FATAL_FAILURE(TransferTest(fd, pair1->first_fd())); - - EXPECT_THAT(close(fd), SyscallSucceeds()); - fd = -1; - - ASSERT_NO_FATAL_FAILURE(RecvSingleFD(sockets->second_fd(), &fd, received_data, - sizeof(received_data), - sizeof(sent_data) / 2)); - - EXPECT_EQ(0, memcmp(sent_data + sizeof(sent_data) / 2, received_data, - sizeof(sent_data) / 2)); - - ASSERT_NO_FATAL_FAILURE(TransferTest(fd, pair2->first_fd())); - EXPECT_THAT(close(fd), SyscallSucceeds()); -} - -TEST_P(UnixStreamSocketPairTest, CredPassPartialRead) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data[20]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - - struct ucred sent_creds; - - ASSERT_THAT(sent_creds.pid = getpid(), SyscallSucceeds()); - ASSERT_THAT(sent_creds.uid = getuid(), SyscallSucceeds()); - ASSERT_THAT(sent_creds.gid = getgid(), SyscallSucceeds()); - - ASSERT_NO_FATAL_FAILURE( - SendCreds(sockets->first_fd(), sent_creds, sent_data, sizeof(sent_data))); - - int one = 1; - ASSERT_THAT(setsockopt(sockets->second_fd(), SOL_SOCKET, SO_PASSCRED, &one, - sizeof(one)), - SyscallSucceeds()); - - for (int i = 0; i < 2; i++) { - char received_data[10]; - struct ucred received_creds; - ASSERT_NO_FATAL_FAILURE(RecvCreds(sockets->second_fd(), &received_creds, - received_data, sizeof(received_data), - sizeof(received_data))); - - EXPECT_EQ(0, memcmp(sent_data + i * sizeof(received_data), received_data, - sizeof(received_data))); - EXPECT_EQ(sent_creds.pid, received_creds.pid); - EXPECT_EQ(sent_creds.uid, received_creds.uid); - EXPECT_EQ(sent_creds.gid, received_creds.gid); - } -} - -// Unix stream sockets peek in the same way as datagram sockets. -// -// SinglePeek checks that only a single message is peekable in a single recv. -TEST_P(UnixStreamSocketPairTest, SinglePeek) { - if (!IsRunningOnGvisor()) { - // Don't run this test on linux kernels newer than 4.3.x Linux kernel commit - // 9f389e35674f5b086edd70ed524ca0f287259725 which changes this behavior. We - // used to target 3.11 compatibility, so disable this test on newer kernels. - // - // NOTE(b/118902768): Bring this up to Linux 4.4 compatibility. - auto version = ASSERT_NO_ERRNO_AND_VALUE(GetKernelVersion()); - SKIP_IF(version.major > 4 || (version.major == 4 && version.minor >= 3)); - } - - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - char sent_data[40]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - ASSERT_THAT(RetryEINTR(send)(sockets->first_fd(), sent_data, - sizeof(sent_data) / 2, 0), - SyscallSucceedsWithValue(sizeof(sent_data) / 2)); - ASSERT_THAT( - RetryEINTR(send)(sockets->first_fd(), sent_data + sizeof(sent_data) / 2, - sizeof(sent_data) / 2, 0), - SyscallSucceedsWithValue(sizeof(sent_data) / 2)); - char received_data[sizeof(sent_data)]; - for (int i = 0; i < 3; i++) { - memset(received_data, 0, sizeof(received_data)); - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), received_data, - sizeof(received_data), MSG_PEEK), - SyscallSucceedsWithValue(sizeof(sent_data) / 2)); - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data) / 2)); - } - memset(received_data, 0, sizeof(received_data)); - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), received_data, - sizeof(sent_data) / 2, 0), - SyscallSucceedsWithValue(sizeof(sent_data) / 2)); - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data) / 2)); - memset(received_data, 0, sizeof(received_data)); - ASSERT_THAT(RetryEINTR(recv)(sockets->second_fd(), received_data, - sizeof(sent_data) / 2, 0), - SyscallSucceedsWithValue(sizeof(sent_data) / 2)); - EXPECT_EQ(0, memcmp(sent_data + sizeof(sent_data) / 2, received_data, - sizeof(sent_data) / 2)); -} - -TEST_P(UnixStreamSocketPairTest, CredsNotCoalescedUp) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data1[20]; - RandomizeBuffer(sent_data1, sizeof(sent_data1)); - - ASSERT_THAT(WriteFd(sockets->first_fd(), sent_data1, sizeof(sent_data1)), - SyscallSucceedsWithValue(sizeof(sent_data1))); - - SetSoPassCred(sockets->second_fd()); - - char sent_data2[20]; - RandomizeBuffer(sent_data2, sizeof(sent_data2)); - - ASSERT_THAT(WriteFd(sockets->first_fd(), sent_data2, sizeof(sent_data2)), - SyscallSucceedsWithValue(sizeof(sent_data2))); - - char received_data[sizeof(sent_data1) + sizeof(sent_data2)]; - - struct ucred received_creds; - ASSERT_NO_FATAL_FAILURE(RecvCreds(sockets->second_fd(), &received_creds, - received_data, sizeof(received_data), - sizeof(sent_data1))); - - EXPECT_EQ(0, memcmp(sent_data1, received_data, sizeof(sent_data1))); - - struct ucred want_creds { - 0, 65534, 65534 - }; - - EXPECT_EQ(want_creds.pid, received_creds.pid); - EXPECT_EQ(want_creds.uid, received_creds.uid); - EXPECT_EQ(want_creds.gid, received_creds.gid); - - ASSERT_NO_FATAL_FAILURE(RecvCreds(sockets->second_fd(), &received_creds, - received_data, sizeof(received_data), - sizeof(sent_data2))); - - EXPECT_EQ(0, memcmp(sent_data2, received_data, sizeof(sent_data2))); - - ASSERT_THAT(want_creds.pid = getpid(), SyscallSucceeds()); - ASSERT_THAT(want_creds.uid = getuid(), SyscallSucceeds()); - ASSERT_THAT(want_creds.gid = getgid(), SyscallSucceeds()); - - EXPECT_EQ(want_creds.pid, received_creds.pid); - EXPECT_EQ(want_creds.uid, received_creds.uid); - EXPECT_EQ(want_creds.gid, received_creds.gid); -} - -TEST_P(UnixStreamSocketPairTest, CredsNotCoalescedDown) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - SetSoPassCred(sockets->second_fd()); - - char sent_data1[20]; - RandomizeBuffer(sent_data1, sizeof(sent_data1)); - - ASSERT_THAT(WriteFd(sockets->first_fd(), sent_data1, sizeof(sent_data1)), - SyscallSucceedsWithValue(sizeof(sent_data1))); - - UnsetSoPassCred(sockets->second_fd()); - - char sent_data2[20]; - RandomizeBuffer(sent_data2, sizeof(sent_data2)); - - ASSERT_THAT(WriteFd(sockets->first_fd(), sent_data2, sizeof(sent_data2)), - SyscallSucceedsWithValue(sizeof(sent_data2))); - - SetSoPassCred(sockets->second_fd()); - - char received_data[sizeof(sent_data1) + sizeof(sent_data2)]; - struct ucred received_creds; - - ASSERT_NO_FATAL_FAILURE(RecvCreds(sockets->second_fd(), &received_creds, - received_data, sizeof(received_data), - sizeof(sent_data1))); - - EXPECT_EQ(0, memcmp(sent_data1, received_data, sizeof(sent_data1))); - - struct ucred want_creds; - ASSERT_THAT(want_creds.pid = getpid(), SyscallSucceeds()); - ASSERT_THAT(want_creds.uid = getuid(), SyscallSucceeds()); - ASSERT_THAT(want_creds.gid = getgid(), SyscallSucceeds()); - - EXPECT_EQ(want_creds.pid, received_creds.pid); - EXPECT_EQ(want_creds.uid, received_creds.uid); - EXPECT_EQ(want_creds.gid, received_creds.gid); - - ASSERT_NO_FATAL_FAILURE(RecvCreds(sockets->second_fd(), &received_creds, - received_data, sizeof(received_data), - sizeof(sent_data2))); - - EXPECT_EQ(0, memcmp(sent_data2, received_data, sizeof(sent_data2))); - - want_creds = {0, 65534, 65534}; - - EXPECT_EQ(want_creds.pid, received_creds.pid); - EXPECT_EQ(want_creds.uid, received_creds.uid); - EXPECT_EQ(want_creds.gid, received_creds.gid); -} - -TEST_P(UnixStreamSocketPairTest, CoalescedCredsNoPasscred) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - SetSoPassCred(sockets->second_fd()); - - char sent_data1[20]; - RandomizeBuffer(sent_data1, sizeof(sent_data1)); - - ASSERT_THAT(WriteFd(sockets->first_fd(), sent_data1, sizeof(sent_data1)), - SyscallSucceedsWithValue(sizeof(sent_data1))); - - UnsetSoPassCred(sockets->second_fd()); - - char sent_data2[20]; - RandomizeBuffer(sent_data2, sizeof(sent_data2)); - - ASSERT_THAT(WriteFd(sockets->first_fd(), sent_data2, sizeof(sent_data2)), - SyscallSucceedsWithValue(sizeof(sent_data2))); - - char received_data[sizeof(sent_data1) + sizeof(sent_data2)]; - - ASSERT_NO_FATAL_FAILURE( - RecvNoCmsg(sockets->second_fd(), received_data, sizeof(received_data))); - - EXPECT_EQ(0, memcmp(sent_data1, received_data, sizeof(sent_data1))); - EXPECT_EQ(0, memcmp(sent_data2, received_data + sizeof(sent_data1), - sizeof(sent_data2))); -} - -TEST_P(UnixStreamSocketPairTest, CoalescedCreds1) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data1[20]; - RandomizeBuffer(sent_data1, sizeof(sent_data1)); - - ASSERT_THAT(WriteFd(sockets->first_fd(), sent_data1, sizeof(sent_data1)), - SyscallSucceedsWithValue(sizeof(sent_data1))); - - char sent_data2[20]; - RandomizeBuffer(sent_data2, sizeof(sent_data2)); - - ASSERT_THAT(WriteFd(sockets->first_fd(), sent_data2, sizeof(sent_data2)), - SyscallSucceedsWithValue(sizeof(sent_data2))); - - SetSoPassCred(sockets->second_fd()); - - char received_data[sizeof(sent_data1) + sizeof(sent_data2)]; - struct ucred received_creds; - - ASSERT_NO_FATAL_FAILURE(RecvCreds(sockets->second_fd(), &received_creds, - received_data, sizeof(received_data))); - - EXPECT_EQ(0, memcmp(sent_data1, received_data, sizeof(sent_data1))); - EXPECT_EQ(0, memcmp(sent_data2, received_data + sizeof(sent_data1), - sizeof(sent_data2))); - - struct ucred want_creds { - 0, 65534, 65534 - }; - - EXPECT_EQ(want_creds.pid, received_creds.pid); - EXPECT_EQ(want_creds.uid, received_creds.uid); - EXPECT_EQ(want_creds.gid, received_creds.gid); -} - -TEST_P(UnixStreamSocketPairTest, CoalescedCreds2) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - SetSoPassCred(sockets->second_fd()); - - char sent_data1[20]; - RandomizeBuffer(sent_data1, sizeof(sent_data1)); - - ASSERT_THAT(WriteFd(sockets->first_fd(), sent_data1, sizeof(sent_data1)), - SyscallSucceedsWithValue(sizeof(sent_data1))); - - char sent_data2[20]; - RandomizeBuffer(sent_data2, sizeof(sent_data2)); - - ASSERT_THAT(WriteFd(sockets->first_fd(), sent_data2, sizeof(sent_data2)), - SyscallSucceedsWithValue(sizeof(sent_data2))); - - char received_data[sizeof(sent_data1) + sizeof(sent_data2)]; - struct ucred received_creds; - - ASSERT_NO_FATAL_FAILURE(RecvCreds(sockets->second_fd(), &received_creds, - received_data, sizeof(received_data))); - - EXPECT_EQ(0, memcmp(sent_data1, received_data, sizeof(sent_data1))); - EXPECT_EQ(0, memcmp(sent_data2, received_data + sizeof(sent_data1), - sizeof(sent_data2))); - - struct ucred want_creds; - ASSERT_THAT(want_creds.pid = getpid(), SyscallSucceeds()); - ASSERT_THAT(want_creds.uid = getuid(), SyscallSucceeds()); - ASSERT_THAT(want_creds.gid = getgid(), SyscallSucceeds()); - - EXPECT_EQ(want_creds.pid, received_creds.pid); - EXPECT_EQ(want_creds.uid, received_creds.uid); - EXPECT_EQ(want_creds.gid, received_creds.gid); -} - -TEST_P(UnixStreamSocketPairTest, NonCoalescedDifferingCreds1) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - char sent_data1[20]; - RandomizeBuffer(sent_data1, sizeof(sent_data1)); - - ASSERT_THAT(WriteFd(sockets->first_fd(), sent_data1, sizeof(sent_data1)), - SyscallSucceedsWithValue(sizeof(sent_data1))); - - SetSoPassCred(sockets->second_fd()); - - char sent_data2[20]; - RandomizeBuffer(sent_data2, sizeof(sent_data2)); - - ASSERT_THAT(WriteFd(sockets->first_fd(), sent_data2, sizeof(sent_data2)), - SyscallSucceedsWithValue(sizeof(sent_data2))); - - char received_data1[sizeof(sent_data1) + sizeof(sent_data2)]; - struct ucred received_creds1; - - ASSERT_NO_FATAL_FAILURE(RecvCreds(sockets->second_fd(), &received_creds1, - received_data1, sizeof(sent_data1))); - - EXPECT_EQ(0, memcmp(sent_data1, received_data1, sizeof(sent_data1))); - - struct ucred want_creds1 { - 0, 65534, 65534 - }; - - EXPECT_EQ(want_creds1.pid, received_creds1.pid); - EXPECT_EQ(want_creds1.uid, received_creds1.uid); - EXPECT_EQ(want_creds1.gid, received_creds1.gid); - - char received_data2[sizeof(sent_data1) + sizeof(sent_data2)]; - struct ucred received_creds2; - - ASSERT_NO_FATAL_FAILURE(RecvCreds(sockets->second_fd(), &received_creds2, - received_data2, sizeof(sent_data2))); - - EXPECT_EQ(0, memcmp(sent_data2, received_data2, sizeof(sent_data2))); - - struct ucred want_creds2; - ASSERT_THAT(want_creds2.pid = getpid(), SyscallSucceeds()); - ASSERT_THAT(want_creds2.uid = getuid(), SyscallSucceeds()); - ASSERT_THAT(want_creds2.gid = getgid(), SyscallSucceeds()); - - EXPECT_EQ(want_creds2.pid, received_creds2.pid); - EXPECT_EQ(want_creds2.uid, received_creds2.uid); - EXPECT_EQ(want_creds2.gid, received_creds2.gid); -} - -TEST_P(UnixStreamSocketPairTest, NonCoalescedDifferingCreds2) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - SetSoPassCred(sockets->second_fd()); - - char sent_data1[20]; - RandomizeBuffer(sent_data1, sizeof(sent_data1)); - - ASSERT_THAT(WriteFd(sockets->first_fd(), sent_data1, sizeof(sent_data1)), - SyscallSucceedsWithValue(sizeof(sent_data1))); - - UnsetSoPassCred(sockets->second_fd()); - - char sent_data2[20]; - RandomizeBuffer(sent_data2, sizeof(sent_data2)); - - ASSERT_THAT(WriteFd(sockets->first_fd(), sent_data2, sizeof(sent_data2)), - SyscallSucceedsWithValue(sizeof(sent_data2))); - - SetSoPassCred(sockets->second_fd()); - - char received_data1[sizeof(sent_data1) + sizeof(sent_data2)]; - struct ucred received_creds1; - - ASSERT_NO_FATAL_FAILURE(RecvCreds(sockets->second_fd(), &received_creds1, - received_data1, sizeof(sent_data1))); - - EXPECT_EQ(0, memcmp(sent_data1, received_data1, sizeof(sent_data1))); - - struct ucred want_creds1; - ASSERT_THAT(want_creds1.pid = getpid(), SyscallSucceeds()); - ASSERT_THAT(want_creds1.uid = getuid(), SyscallSucceeds()); - ASSERT_THAT(want_creds1.gid = getgid(), SyscallSucceeds()); - - EXPECT_EQ(want_creds1.pid, received_creds1.pid); - EXPECT_EQ(want_creds1.uid, received_creds1.uid); - EXPECT_EQ(want_creds1.gid, received_creds1.gid); - - char received_data2[sizeof(sent_data1) + sizeof(sent_data2)]; - struct ucred received_creds2; - - ASSERT_NO_FATAL_FAILURE(RecvCreds(sockets->second_fd(), &received_creds2, - received_data2, sizeof(sent_data2))); - - EXPECT_EQ(0, memcmp(sent_data2, received_data2, sizeof(sent_data2))); - - struct ucred want_creds2 { - 0, 65534, 65534 - }; - - EXPECT_EQ(want_creds2.pid, received_creds2.pid); - EXPECT_EQ(want_creds2.uid, received_creds2.uid); - EXPECT_EQ(want_creds2.gid, received_creds2.gid); -} - -TEST_P(UnixStreamSocketPairTest, CoalescedDifferingCreds) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - SetSoPassCred(sockets->second_fd()); - - char sent_data1[20]; - RandomizeBuffer(sent_data1, sizeof(sent_data1)); - - ASSERT_THAT(WriteFd(sockets->first_fd(), sent_data1, sizeof(sent_data1)), - SyscallSucceedsWithValue(sizeof(sent_data1))); - - char sent_data2[20]; - RandomizeBuffer(sent_data2, sizeof(sent_data2)); - - ASSERT_THAT(WriteFd(sockets->first_fd(), sent_data2, sizeof(sent_data2)), - SyscallSucceedsWithValue(sizeof(sent_data2))); - - UnsetSoPassCred(sockets->second_fd()); - - char sent_data3[20]; - RandomizeBuffer(sent_data3, sizeof(sent_data3)); - - ASSERT_THAT(WriteFd(sockets->first_fd(), sent_data3, sizeof(sent_data3)), - SyscallSucceedsWithValue(sizeof(sent_data3))); - - char received_data[sizeof(sent_data1) + sizeof(sent_data2) + - sizeof(sent_data3)]; - - ASSERT_NO_FATAL_FAILURE( - RecvNoCmsg(sockets->second_fd(), received_data, sizeof(received_data))); - - EXPECT_EQ(0, memcmp(sent_data1, received_data, sizeof(sent_data1))); - EXPECT_EQ(0, memcmp(sent_data2, received_data + sizeof(sent_data1), - sizeof(sent_data2))); - EXPECT_EQ(0, memcmp(sent_data3, - received_data + sizeof(sent_data1) + sizeof(sent_data2), - sizeof(sent_data3))); -} - -INSTANTIATE_TEST_SUITE_P( - AllUnixDomainSockets, UnixStreamSocketPairTest, - ::testing::ValuesIn(IncludeReversals(VecCat<SocketPairKind>( - ApplyVec<SocketPairKind>(UnixDomainSocketPair, - AllBitwiseCombinations(List<int>{SOCK_STREAM}, - List<int>{ - 0, SOCK_NONBLOCK})), - ApplyVec<SocketPairKind>(FilesystemBoundUnixDomainSocketPair, - AllBitwiseCombinations(List<int>{SOCK_STREAM}, - List<int>{ - 0, SOCK_NONBLOCK})), - ApplyVec<SocketPairKind>( - AbstractBoundUnixDomainSocketPair, - AllBitwiseCombinations(List<int>{SOCK_STREAM}, - List<int>{0, SOCK_NONBLOCK})))))); - -// Test fixture for tests that apply to pairs of unbound unix stream sockets. -using UnboundUnixStreamSocketPairTest = SocketPairTest; - -TEST_P(UnboundUnixStreamSocketPairTest, SendtoWithoutConnect) { - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - char data = 'a'; - ASSERT_THAT(sendto(sockets->second_fd(), &data, sizeof(data), 0, - sockets->first_addr(), sockets->first_addr_size()), - SyscallFailsWithErrno(EOPNOTSUPP)); -} - -TEST_P(UnboundUnixStreamSocketPairTest, SendtoWithoutConnectIgnoresAddr) { - // FIXME(b/68223466): gVisor tries to find /foo/bar and thus returns ENOENT. - if (IsRunningOnGvisor()) { - return; - } - - auto sockets = ASSERT_NO_ERRNO_AND_VALUE(NewSocketPair()); - - ASSERT_THAT(bind(sockets->first_fd(), sockets->first_addr(), - sockets->first_addr_size()), - SyscallSucceeds()); - - // Even a bogus address is completely ignored. - constexpr char kPath[] = "/foo/bar"; - - // Sanity check that kPath doesn't exist. - struct stat s; - ASSERT_THAT(stat(kPath, &s), SyscallFailsWithErrno(ENOENT)); - - struct sockaddr_un addr = {}; - addr.sun_family = AF_UNIX; - memcpy(addr.sun_path, kPath, sizeof(kPath)); - - char data = 'a'; - ASSERT_THAT( - sendto(sockets->second_fd(), &data, sizeof(data), 0, - reinterpret_cast<const struct sockaddr*>(&addr), sizeof(addr)), - SyscallFailsWithErrno(EOPNOTSUPP)); -} - -INSTANTIATE_TEST_SUITE_P( - AllUnixDomainSockets, UnboundUnixStreamSocketPairTest, - ::testing::ValuesIn(IncludeReversals(VecCat<SocketPairKind>( - ApplyVec<SocketPairKind>(FilesystemUnboundUnixDomainSocketPair, - AllBitwiseCombinations(List<int>{SOCK_STREAM}, - List<int>{ - 0, SOCK_NONBLOCK})), - ApplyVec<SocketPairKind>( - AbstractUnboundUnixDomainSocketPair, - AllBitwiseCombinations(List<int>{SOCK_STREAM}, - List<int>{0, SOCK_NONBLOCK})))))); - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/splice.cc b/test/syscalls/linux/splice.cc deleted file mode 100644 index faa1247f6..000000000 --- a/test/syscalls/linux/splice.cc +++ /dev/null @@ -1,649 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <fcntl.h> -#include <sys/eventfd.h> -#include <sys/resource.h> -#include <sys/sendfile.h> -#include <sys/time.h> -#include <unistd.h> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "absl/strings/string_view.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/util/file_descriptor.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -TEST(SpliceTest, TwoRegularFiles) { - // Create temp files. - const TempPath in_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const TempPath out_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - - // Open the input file as read only. - const FileDescriptor in_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(in_file.path(), O_RDONLY)); - - // Open the output file as write only. - const FileDescriptor out_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(out_file.path(), O_WRONLY)); - - // Verify that it is rejected as expected; regardless of offsets. - loff_t in_offset = 0; - loff_t out_offset = 0; - EXPECT_THAT(splice(in_fd.get(), &in_offset, out_fd.get(), &out_offset, 1, 0), - SyscallFailsWithErrno(EINVAL)); - EXPECT_THAT(splice(in_fd.get(), nullptr, out_fd.get(), &out_offset, 1, 0), - SyscallFailsWithErrno(EINVAL)); - EXPECT_THAT(splice(in_fd.get(), &in_offset, out_fd.get(), nullptr, 1, 0), - SyscallFailsWithErrno(EINVAL)); - EXPECT_THAT(splice(in_fd.get(), nullptr, out_fd.get(), nullptr, 1, 0), - SyscallFailsWithErrno(EINVAL)); -} - -int memfd_create(const std::string& name, unsigned int flags) { - return syscall(__NR_memfd_create, name.c_str(), flags); -} - -TEST(SpliceTest, NegativeOffset) { - // Create a new pipe. - int fds[2]; - ASSERT_THAT(pipe(fds), SyscallSucceeds()); - const FileDescriptor rfd(fds[0]); - const FileDescriptor wfd(fds[1]); - - // Fill the pipe. - std::vector<char> buf(kPageSize); - RandomizeBuffer(buf.data(), buf.size()); - ASSERT_THAT(write(wfd.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(kPageSize)); - - // Open the output file as write only. - int fd; - EXPECT_THAT(fd = memfd_create("negative", 0), SyscallSucceeds()); - const FileDescriptor out_fd(fd); - - loff_t out_offset = 0xffffffffffffffffull; - constexpr int kSize = 2; - EXPECT_THAT(splice(rfd.get(), nullptr, out_fd.get(), &out_offset, kSize, 0), - SyscallFailsWithErrno(EINVAL)); -} - -// Write offset + size overflows int64. -// -// This is a regression test for b/148041624. -TEST(SpliceTest, WriteOverflow) { - // Create a new pipe. - int fds[2]; - ASSERT_THAT(pipe(fds), SyscallSucceeds()); - const FileDescriptor rfd(fds[0]); - const FileDescriptor wfd(fds[1]); - - // Fill the pipe. - std::vector<char> buf(kPageSize); - RandomizeBuffer(buf.data(), buf.size()); - ASSERT_THAT(write(wfd.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(kPageSize)); - - // Open the output file. - int fd; - EXPECT_THAT(fd = memfd_create("overflow", 0), SyscallSucceeds()); - const FileDescriptor out_fd(fd); - - // out_offset + kSize overflows INT64_MAX. - loff_t out_offset = 0x7ffffffffffffffeull; - constexpr int kSize = 3; - EXPECT_THAT(splice(rfd.get(), nullptr, out_fd.get(), &out_offset, kSize, 0), - SyscallFailsWithErrno(EINVAL)); -} - -TEST(SpliceTest, SamePipe) { - // Create a new pipe. - int fds[2]; - ASSERT_THAT(pipe(fds), SyscallSucceeds()); - const FileDescriptor rfd(fds[0]); - const FileDescriptor wfd(fds[1]); - - // Fill the pipe. - std::vector<char> buf(kPageSize); - RandomizeBuffer(buf.data(), buf.size()); - ASSERT_THAT(write(wfd.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(kPageSize)); - - // Attempt to splice to itself. - EXPECT_THAT(splice(rfd.get(), nullptr, wfd.get(), nullptr, kPageSize, 0), - SyscallFailsWithErrno(EINVAL)); -} - -TEST(TeeTest, SamePipe) { - // Create a new pipe. - int fds[2]; - ASSERT_THAT(pipe(fds), SyscallSucceeds()); - const FileDescriptor rfd(fds[0]); - const FileDescriptor wfd(fds[1]); - - // Fill the pipe. - std::vector<char> buf(kPageSize); - RandomizeBuffer(buf.data(), buf.size()); - ASSERT_THAT(write(wfd.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(kPageSize)); - - // Attempt to tee to itself. - EXPECT_THAT(tee(rfd.get(), wfd.get(), kPageSize, 0), - SyscallFailsWithErrno(EINVAL)); -} - -TEST(TeeTest, RegularFile) { - // Open some file. - const TempPath in_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const FileDescriptor in_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(in_file.path(), O_RDWR)); - - // Create a new pipe. - int fds[2]; - ASSERT_THAT(pipe(fds), SyscallSucceeds()); - const FileDescriptor rfd(fds[0]); - const FileDescriptor wfd(fds[1]); - - // Attempt to tee from the file. - EXPECT_THAT(tee(in_fd.get(), wfd.get(), kPageSize, 0), - SyscallFailsWithErrno(EINVAL)); - EXPECT_THAT(tee(rfd.get(), in_fd.get(), kPageSize, 0), - SyscallFailsWithErrno(EINVAL)); -} - -TEST(SpliceTest, PipeOffsets) { - // Create two new pipes. - int first[2], second[2]; - ASSERT_THAT(pipe(first), SyscallSucceeds()); - const FileDescriptor rfd1(first[0]); - const FileDescriptor wfd1(first[1]); - ASSERT_THAT(pipe(second), SyscallSucceeds()); - const FileDescriptor rfd2(second[0]); - const FileDescriptor wfd2(second[1]); - - // All pipe offsets should be rejected. - loff_t in_offset = 0; - loff_t out_offset = 0; - EXPECT_THAT(splice(rfd1.get(), &in_offset, wfd2.get(), &out_offset, 1, 0), - SyscallFailsWithErrno(ESPIPE)); - EXPECT_THAT(splice(rfd1.get(), nullptr, wfd2.get(), &out_offset, 1, 0), - SyscallFailsWithErrno(ESPIPE)); - EXPECT_THAT(splice(rfd1.get(), &in_offset, wfd2.get(), nullptr, 1, 0), - SyscallFailsWithErrno(ESPIPE)); -} - -// Event FDs may be used with splice without an offset. -TEST(SpliceTest, FromEventFD) { - // Open the input eventfd with an initial value so that it is readable. - constexpr uint64_t kEventFDValue = 1; - int efd; - ASSERT_THAT(efd = eventfd(kEventFDValue, 0), SyscallSucceeds()); - const FileDescriptor in_fd(efd); - - // Create a new pipe. - int fds[2]; - ASSERT_THAT(pipe(fds), SyscallSucceeds()); - const FileDescriptor rfd(fds[0]); - const FileDescriptor wfd(fds[1]); - - // Splice 8-byte eventfd value to pipe. - constexpr int kEventFDSize = 8; - EXPECT_THAT(splice(in_fd.get(), nullptr, wfd.get(), nullptr, kEventFDSize, 0), - SyscallSucceedsWithValue(kEventFDSize)); - - // Contents should be equal. - std::vector<char> rbuf(kEventFDSize); - ASSERT_THAT(read(rfd.get(), rbuf.data(), rbuf.size()), - SyscallSucceedsWithValue(kEventFDSize)); - EXPECT_EQ(memcmp(rbuf.data(), &kEventFDValue, rbuf.size()), 0); -} - -// Event FDs may not be used with splice with an offset. -TEST(SpliceTest, FromEventFDOffset) { - int efd; - ASSERT_THAT(efd = eventfd(0, 0), SyscallSucceeds()); - const FileDescriptor in_fd(efd); - - // Create a new pipe. - int fds[2]; - ASSERT_THAT(pipe(fds), SyscallSucceeds()); - const FileDescriptor rfd(fds[0]); - const FileDescriptor wfd(fds[1]); - - // Attempt to splice 8-byte eventfd value to pipe with offset. - // - // This is not allowed because eventfd doesn't support pread. - constexpr int kEventFDSize = 8; - loff_t in_off = 0; - EXPECT_THAT(splice(in_fd.get(), &in_off, wfd.get(), nullptr, kEventFDSize, 0), - SyscallFailsWithErrno(EINVAL)); -} - -// Event FDs may not be used with splice with an offset. -TEST(SpliceTest, ToEventFDOffset) { - // Create a new pipe. - int fds[2]; - ASSERT_THAT(pipe(fds), SyscallSucceeds()); - const FileDescriptor rfd(fds[0]); - const FileDescriptor wfd(fds[1]); - - // Fill with a value. - constexpr int kEventFDSize = 8; - std::vector<char> buf(kEventFDSize); - buf[0] = 1; - ASSERT_THAT(write(wfd.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(kEventFDSize)); - - int efd; - ASSERT_THAT(efd = eventfd(0, 0), SyscallSucceeds()); - const FileDescriptor out_fd(efd); - - // Attempt to splice 8-byte eventfd value to pipe with offset. - // - // This is not allowed because eventfd doesn't support pwrite. - loff_t out_off = 0; - EXPECT_THAT( - splice(rfd.get(), nullptr, out_fd.get(), &out_off, kEventFDSize, 0), - SyscallFailsWithErrno(EINVAL)); -} - -TEST(SpliceTest, ToPipe) { - // Open the input file. - const TempPath in_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const FileDescriptor in_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(in_file.path(), O_RDWR)); - - // Fill with some random data. - std::vector<char> buf(kPageSize); - RandomizeBuffer(buf.data(), buf.size()); - ASSERT_THAT(write(in_fd.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(kPageSize)); - ASSERT_THAT(lseek(in_fd.get(), 0, SEEK_SET), SyscallSucceedsWithValue(0)); - - // Create a new pipe. - int fds[2]; - ASSERT_THAT(pipe(fds), SyscallSucceeds()); - const FileDescriptor rfd(fds[0]); - const FileDescriptor wfd(fds[1]); - - // Splice to the pipe. - EXPECT_THAT(splice(in_fd.get(), nullptr, wfd.get(), nullptr, kPageSize, 0), - SyscallSucceedsWithValue(kPageSize)); - - // Contents should be equal. - std::vector<char> rbuf(kPageSize); - ASSERT_THAT(read(rfd.get(), rbuf.data(), rbuf.size()), - SyscallSucceedsWithValue(kPageSize)); - EXPECT_EQ(memcmp(rbuf.data(), buf.data(), buf.size()), 0); -} - -TEST(SpliceTest, ToPipeOffset) { - // Open the input file. - const TempPath in_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const FileDescriptor in_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(in_file.path(), O_RDWR)); - - // Fill with some random data. - std::vector<char> buf(kPageSize); - RandomizeBuffer(buf.data(), buf.size()); - ASSERT_THAT(write(in_fd.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(kPageSize)); - - // Create a new pipe. - int fds[2]; - ASSERT_THAT(pipe(fds), SyscallSucceeds()); - const FileDescriptor rfd(fds[0]); - const FileDescriptor wfd(fds[1]); - - // Splice to the pipe. - loff_t in_offset = kPageSize / 2; - EXPECT_THAT( - splice(in_fd.get(), &in_offset, wfd.get(), nullptr, kPageSize / 2, 0), - SyscallSucceedsWithValue(kPageSize / 2)); - - // Contents should be equal to only the second part. - std::vector<char> rbuf(kPageSize / 2); - ASSERT_THAT(read(rfd.get(), rbuf.data(), rbuf.size()), - SyscallSucceedsWithValue(kPageSize / 2)); - EXPECT_EQ(memcmp(rbuf.data(), buf.data() + (kPageSize / 2), rbuf.size()), 0); -} - -TEST(SpliceTest, FromPipe) { - // Create a new pipe. - int fds[2]; - ASSERT_THAT(pipe(fds), SyscallSucceeds()); - const FileDescriptor rfd(fds[0]); - const FileDescriptor wfd(fds[1]); - - // Fill with some random data. - std::vector<char> buf(kPageSize); - RandomizeBuffer(buf.data(), buf.size()); - ASSERT_THAT(write(wfd.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(kPageSize)); - - // Open the input file. - const TempPath out_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const FileDescriptor out_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(out_file.path(), O_RDWR)); - - // Splice to the output file. - EXPECT_THAT(splice(rfd.get(), nullptr, out_fd.get(), nullptr, kPageSize, 0), - SyscallSucceedsWithValue(kPageSize)); - - // The offset of the output should be equal to kPageSize. We assert that and - // reset to zero so that we can read the contents and ensure they match. - EXPECT_THAT(lseek(out_fd.get(), 0, SEEK_CUR), - SyscallSucceedsWithValue(kPageSize)); - ASSERT_THAT(lseek(out_fd.get(), 0, SEEK_SET), SyscallSucceedsWithValue(0)); - - // Contents should be equal. - std::vector<char> rbuf(kPageSize); - ASSERT_THAT(read(out_fd.get(), rbuf.data(), rbuf.size()), - SyscallSucceedsWithValue(kPageSize)); - EXPECT_EQ(memcmp(rbuf.data(), buf.data(), buf.size()), 0); -} - -TEST(SpliceTest, FromPipeOffset) { - // Create a new pipe. - int fds[2]; - ASSERT_THAT(pipe(fds), SyscallSucceeds()); - const FileDescriptor rfd(fds[0]); - const FileDescriptor wfd(fds[1]); - - // Fill with some random data. - std::vector<char> buf(kPageSize); - RandomizeBuffer(buf.data(), buf.size()); - ASSERT_THAT(write(wfd.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(kPageSize)); - - // Open the input file. - const TempPath out_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const FileDescriptor out_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(out_file.path(), O_RDWR)); - - // Splice to the output file. - loff_t out_offset = kPageSize / 2; - EXPECT_THAT( - splice(rfd.get(), nullptr, out_fd.get(), &out_offset, kPageSize, 0), - SyscallSucceedsWithValue(kPageSize)); - - // Content should reflect the splice. We write to a specific offset in the - // file, so the internals should now be allocated sparsely. - std::vector<char> rbuf(kPageSize); - ASSERT_THAT(read(out_fd.get(), rbuf.data(), rbuf.size()), - SyscallSucceedsWithValue(kPageSize)); - std::vector<char> zbuf(kPageSize / 2); - memset(zbuf.data(), 0, zbuf.size()); - EXPECT_EQ(memcmp(rbuf.data(), zbuf.data(), zbuf.size()), 0); - EXPECT_EQ(memcmp(rbuf.data() + kPageSize / 2, buf.data(), kPageSize / 2), 0); -} - -TEST(SpliceTest, TwoPipes) { - // Create two new pipes. - int first[2], second[2]; - ASSERT_THAT(pipe(first), SyscallSucceeds()); - const FileDescriptor rfd1(first[0]); - const FileDescriptor wfd1(first[1]); - ASSERT_THAT(pipe(second), SyscallSucceeds()); - const FileDescriptor rfd2(second[0]); - const FileDescriptor wfd2(second[1]); - - // Fill with some random data. - std::vector<char> buf(kPageSize); - RandomizeBuffer(buf.data(), buf.size()); - ASSERT_THAT(write(wfd1.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(kPageSize)); - - // Splice to the second pipe, using two operations. - EXPECT_THAT( - splice(rfd1.get(), nullptr, wfd2.get(), nullptr, kPageSize / 2, 0), - SyscallSucceedsWithValue(kPageSize / 2)); - EXPECT_THAT( - splice(rfd1.get(), nullptr, wfd2.get(), nullptr, kPageSize / 2, 0), - SyscallSucceedsWithValue(kPageSize / 2)); - - // Content should reflect the splice. - std::vector<char> rbuf(kPageSize); - ASSERT_THAT(read(rfd2.get(), rbuf.data(), rbuf.size()), - SyscallSucceedsWithValue(kPageSize)); - EXPECT_EQ(memcmp(rbuf.data(), buf.data(), kPageSize), 0); -} - -TEST(SpliceTest, Blocking) { - // Create two new pipes. - int first[2], second[2]; - ASSERT_THAT(pipe(first), SyscallSucceeds()); - const FileDescriptor rfd1(first[0]); - const FileDescriptor wfd1(first[1]); - ASSERT_THAT(pipe(second), SyscallSucceeds()); - const FileDescriptor rfd2(second[0]); - const FileDescriptor wfd2(second[1]); - - // This thread writes to the main pipe. - std::vector<char> buf(kPageSize); - RandomizeBuffer(buf.data(), buf.size()); - ScopedThread t([&]() { - ASSERT_THAT(write(wfd1.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(kPageSize)); - }); - - // Attempt a splice immediately; it should block. - EXPECT_THAT(splice(rfd1.get(), nullptr, wfd2.get(), nullptr, kPageSize, 0), - SyscallSucceedsWithValue(kPageSize)); - - // Thread should be joinable. - t.Join(); - - // Content should reflect the splice. - std::vector<char> rbuf(kPageSize); - ASSERT_THAT(read(rfd2.get(), rbuf.data(), rbuf.size()), - SyscallSucceedsWithValue(kPageSize)); - EXPECT_EQ(memcmp(rbuf.data(), buf.data(), kPageSize), 0); -} - -TEST(TeeTest, Blocking) { - // Create two new pipes. - int first[2], second[2]; - ASSERT_THAT(pipe(first), SyscallSucceeds()); - const FileDescriptor rfd1(first[0]); - const FileDescriptor wfd1(first[1]); - ASSERT_THAT(pipe(second), SyscallSucceeds()); - const FileDescriptor rfd2(second[0]); - const FileDescriptor wfd2(second[1]); - - // This thread writes to the main pipe. - std::vector<char> buf(kPageSize); - RandomizeBuffer(buf.data(), buf.size()); - ScopedThread t([&]() { - ASSERT_THAT(write(wfd1.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(kPageSize)); - }); - - // Attempt a tee immediately; it should block. - EXPECT_THAT(tee(rfd1.get(), wfd2.get(), kPageSize, 0), - SyscallSucceedsWithValue(kPageSize)); - - // Thread should be joinable. - t.Join(); - - // Content should reflect the splice, in both pipes. - std::vector<char> rbuf(kPageSize); - ASSERT_THAT(read(rfd2.get(), rbuf.data(), rbuf.size()), - SyscallSucceedsWithValue(kPageSize)); - EXPECT_EQ(memcmp(rbuf.data(), buf.data(), kPageSize), 0); - ASSERT_THAT(read(rfd1.get(), rbuf.data(), rbuf.size()), - SyscallSucceedsWithValue(kPageSize)); - EXPECT_EQ(memcmp(rbuf.data(), buf.data(), kPageSize), 0); -} - -TEST(TeeTest, BlockingWrite) { - // Create two new pipes. - int first[2], second[2]; - ASSERT_THAT(pipe(first), SyscallSucceeds()); - const FileDescriptor rfd1(first[0]); - const FileDescriptor wfd1(first[1]); - ASSERT_THAT(pipe(second), SyscallSucceeds()); - const FileDescriptor rfd2(second[0]); - const FileDescriptor wfd2(second[1]); - - // Make some data available to be read. - std::vector<char> buf1(kPageSize); - RandomizeBuffer(buf1.data(), buf1.size()); - ASSERT_THAT(write(wfd1.get(), buf1.data(), buf1.size()), - SyscallSucceedsWithValue(kPageSize)); - - // Fill up the write pipe's buffer. - int pipe_size = -1; - ASSERT_THAT(pipe_size = fcntl(wfd2.get(), F_GETPIPE_SZ), SyscallSucceeds()); - std::vector<char> buf2(pipe_size); - ASSERT_THAT(write(wfd2.get(), buf2.data(), buf2.size()), - SyscallSucceedsWithValue(pipe_size)); - - ScopedThread t([&]() { - absl::SleepFor(absl::Milliseconds(100)); - ASSERT_THAT(read(rfd2.get(), buf2.data(), buf2.size()), - SyscallSucceedsWithValue(pipe_size)); - }); - - // Attempt a tee immediately; it should block. - EXPECT_THAT(tee(rfd1.get(), wfd2.get(), kPageSize, 0), - SyscallSucceedsWithValue(kPageSize)); - - // Thread should be joinable. - t.Join(); - - // Content should reflect the tee. - std::vector<char> rbuf(kPageSize); - ASSERT_THAT(read(rfd2.get(), rbuf.data(), rbuf.size()), - SyscallSucceedsWithValue(kPageSize)); - EXPECT_EQ(memcmp(rbuf.data(), buf1.data(), kPageSize), 0); -} - -TEST(SpliceTest, NonBlocking) { - // Create two new pipes. - int first[2], second[2]; - ASSERT_THAT(pipe(first), SyscallSucceeds()); - const FileDescriptor rfd1(first[0]); - const FileDescriptor wfd1(first[1]); - ASSERT_THAT(pipe(second), SyscallSucceeds()); - const FileDescriptor rfd2(second[0]); - const FileDescriptor wfd2(second[1]); - - // Splice with no data to back it. - EXPECT_THAT(splice(rfd1.get(), nullptr, wfd2.get(), nullptr, kPageSize, - SPLICE_F_NONBLOCK), - SyscallFailsWithErrno(EAGAIN)); -} - -TEST(TeeTest, NonBlocking) { - // Create two new pipes. - int first[2], second[2]; - ASSERT_THAT(pipe(first), SyscallSucceeds()); - const FileDescriptor rfd1(first[0]); - const FileDescriptor wfd1(first[1]); - ASSERT_THAT(pipe(second), SyscallSucceeds()); - const FileDescriptor rfd2(second[0]); - const FileDescriptor wfd2(second[1]); - - // Splice with no data to back it. - EXPECT_THAT(tee(rfd1.get(), wfd2.get(), kPageSize, SPLICE_F_NONBLOCK), - SyscallFailsWithErrno(EAGAIN)); -} - -TEST(TeeTest, MultiPage) { - // Create two new pipes. - int first[2], second[2]; - ASSERT_THAT(pipe(first), SyscallSucceeds()); - const FileDescriptor rfd1(first[0]); - const FileDescriptor wfd1(first[1]); - ASSERT_THAT(pipe(second), SyscallSucceeds()); - const FileDescriptor rfd2(second[0]); - const FileDescriptor wfd2(second[1]); - - // Make some data available to be read. - std::vector<char> wbuf(8 * kPageSize); - RandomizeBuffer(wbuf.data(), wbuf.size()); - ASSERT_THAT(write(wfd1.get(), wbuf.data(), wbuf.size()), - SyscallSucceedsWithValue(wbuf.size())); - - // Attempt a tee immediately; it should complete. - EXPECT_THAT(tee(rfd1.get(), wfd2.get(), wbuf.size(), 0), - SyscallSucceedsWithValue(wbuf.size())); - - // Content should reflect the tee. - std::vector<char> rbuf(wbuf.size()); - ASSERT_THAT(read(rfd2.get(), rbuf.data(), rbuf.size()), - SyscallSucceedsWithValue(rbuf.size())); - EXPECT_EQ(memcmp(rbuf.data(), wbuf.data(), rbuf.size()), 0); - ASSERT_THAT(read(rfd1.get(), rbuf.data(), rbuf.size()), - SyscallSucceedsWithValue(rbuf.size())); - EXPECT_EQ(memcmp(rbuf.data(), wbuf.data(), rbuf.size()), 0); -} - -TEST(SpliceTest, FromPipeMaxFileSize) { - // Create a new pipe. - int fds[2]; - ASSERT_THAT(pipe(fds), SyscallSucceeds()); - const FileDescriptor rfd(fds[0]); - const FileDescriptor wfd(fds[1]); - - // Fill with some random data. - std::vector<char> buf(kPageSize); - RandomizeBuffer(buf.data(), buf.size()); - ASSERT_THAT(write(wfd.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(kPageSize)); - - // Open the input file. - const TempPath out_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const FileDescriptor out_fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(out_file.path(), O_RDWR)); - - EXPECT_THAT(ftruncate(out_fd.get(), 13 << 20), SyscallSucceeds()); - EXPECT_THAT(lseek(out_fd.get(), 0, SEEK_END), - SyscallSucceedsWithValue(13 << 20)); - - // Set our file size limit. - sigset_t set; - sigemptyset(&set); - sigaddset(&set, SIGXFSZ); - TEST_PCHECK(sigprocmask(SIG_BLOCK, &set, nullptr) == 0); - rlimit rlim = {}; - rlim.rlim_cur = rlim.rlim_max = (13 << 20); - EXPECT_THAT(setrlimit(RLIMIT_FSIZE, &rlim), SyscallSucceeds()); - - // Splice to the output file. - EXPECT_THAT( - splice(rfd.get(), nullptr, out_fd.get(), nullptr, 3 * kPageSize, 0), - SyscallFailsWithErrno(EFBIG)); - - // Contents should be equal. - std::vector<char> rbuf(kPageSize); - ASSERT_THAT(read(rfd.get(), rbuf.data(), rbuf.size()), - SyscallSucceedsWithValue(kPageSize)); - EXPECT_EQ(memcmp(rbuf.data(), buf.data(), buf.size()), 0); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/stat.cc b/test/syscalls/linux/stat.cc deleted file mode 100644 index c951ac3b3..000000000 --- a/test/syscalls/linux/stat.cc +++ /dev/null @@ -1,659 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <fcntl.h> -#include <sys/stat.h> -#include <sys/statfs.h> -#include <sys/types.h> -#include <unistd.h> - -#include <string> -#include <vector> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "absl/strings/match.h" -#include "absl/strings/str_cat.h" -#include "absl/strings/string_view.h" -#include "test/syscalls/linux/file_base.h" -#include "test/util/cleanup.h" -#include "test/util/file_descriptor.h" -#include "test/util/fs_util.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -class StatTest : public FileTest {}; - -TEST_F(StatTest, FstatatAbs) { - struct stat st; - - // Check that the stat works. - EXPECT_THAT(fstatat(AT_FDCWD, test_file_name_.c_str(), &st, 0), - SyscallSucceeds()); - EXPECT_TRUE(S_ISREG(st.st_mode)); -} - -TEST_F(StatTest, FstatatEmptyPath) { - struct stat st; - const auto fd = ASSERT_NO_ERRNO_AND_VALUE(Open(test_file_name_, O_RDONLY)); - - // Check that the stat works. - EXPECT_THAT(fstatat(fd.get(), "", &st, AT_EMPTY_PATH), SyscallSucceeds()); - EXPECT_TRUE(S_ISREG(st.st_mode)); -} - -TEST_F(StatTest, FstatatRel) { - struct stat st; - int dirfd; - auto filename = std::string(Basename(test_file_name_)); - - // Open the temporary directory read-only. - ASSERT_THAT(dirfd = open(GetAbsoluteTestTmpdir().c_str(), O_RDONLY), - SyscallSucceeds()); - - // Check that the stat works. - EXPECT_THAT(fstatat(dirfd, filename.c_str(), &st, 0), SyscallSucceeds()); - EXPECT_TRUE(S_ISREG(st.st_mode)); - close(dirfd); -} - -TEST_F(StatTest, FstatatSymlink) { - struct stat st; - - // Check that the link is followed. - EXPECT_THAT(fstatat(AT_FDCWD, "/proc/self", &st, 0), SyscallSucceeds()); - EXPECT_TRUE(S_ISDIR(st.st_mode)); - EXPECT_FALSE(S_ISLNK(st.st_mode)); - - // Check that the flag works. - EXPECT_THAT(fstatat(AT_FDCWD, "/proc/self", &st, AT_SYMLINK_NOFOLLOW), - SyscallSucceeds()); - EXPECT_TRUE(S_ISLNK(st.st_mode)); - EXPECT_FALSE(S_ISDIR(st.st_mode)); -} - -TEST_F(StatTest, Nlinks) { - TempPath basedir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - - // Directory is initially empty, it should contain 2 links (one from itself, - // one from "."). - EXPECT_THAT(Links(basedir.path()), IsPosixErrorOkAndHolds(2)); - - // Create a file in the test directory. Files shouldn't increase the link - // count on the base directory. - TempPath file1 = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(basedir.path())); - EXPECT_THAT(Links(basedir.path()), IsPosixErrorOkAndHolds(2)); - - // Create subdirectories. This should increase the link count by 1 per - // subdirectory. - TempPath dir1 = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDirIn(basedir.path())); - EXPECT_THAT(Links(basedir.path()), IsPosixErrorOkAndHolds(3)); - TempPath dir2 = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDirIn(basedir.path())); - EXPECT_THAT(Links(basedir.path()), IsPosixErrorOkAndHolds(4)); - - // Removing directories should reduce the link count. - dir1.reset(); - EXPECT_THAT(Links(basedir.path()), IsPosixErrorOkAndHolds(3)); - dir2.reset(); - EXPECT_THAT(Links(basedir.path()), IsPosixErrorOkAndHolds(2)); - - // Removing files should have no effect on link count. - file1.reset(); - EXPECT_THAT(Links(basedir.path()), IsPosixErrorOkAndHolds(2)); -} - -TEST_F(StatTest, BlocksIncreaseOnWrite) { - struct stat st; - - // Stat the empty file. - ASSERT_THAT(fstat(test_file_fd_.get(), &st), SyscallSucceeds()); - - const int initial_blocks = st.st_blocks; - - // Write to the file, making sure to exceed the block size. - std::vector<char> buf(2 * st.st_blksize, 'a'); - ASSERT_THAT(write(test_file_fd_.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(buf.size())); - - // Stat the file again, and verify that number of allocated blocks has - // increased. - ASSERT_THAT(fstat(test_file_fd_.get(), &st), SyscallSucceeds()); - EXPECT_GT(st.st_blocks, initial_blocks); -} - -TEST_F(StatTest, PathNotCleaned) { - TempPath basedir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - - // Create a file in the basedir. - TempPath file = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(basedir.path())); - - // Stating the file directly should succeed. - struct stat buf; - EXPECT_THAT(lstat(file.path().c_str(), &buf), SyscallSucceeds()); - - // Try to stat the file using a directory that does not exist followed by - // "..". If the path is cleaned prior to stating (which it should not be) - // then this will succeed. - const std::string bad_path = JoinPath("/does_not_exist/..", file.path()); - EXPECT_THAT(lstat(bad_path.c_str(), &buf), SyscallFailsWithErrno(ENOENT)); -} - -TEST_F(StatTest, PathCanContainDotDot) { - TempPath basedir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - TempPath subdir = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDirIn(basedir.path())); - const std::string subdir_name = std::string(Basename(subdir.path())); - - // Create a file in the subdir. - TempPath file = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(subdir.path())); - const std::string file_name = std::string(Basename(file.path())); - - // Stat the file through a path that includes '..' and '.' but still resolves - // to the file. - const std::string good_path = - JoinPath(basedir.path(), subdir_name, "..", subdir_name, ".", file_name); - struct stat buf; - EXPECT_THAT(lstat(good_path.c_str(), &buf), SyscallSucceeds()); -} - -TEST_F(StatTest, PathCanContainEmptyComponent) { - TempPath basedir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - - // Create a file in the basedir. - TempPath file = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(basedir.path())); - const std::string file_name = std::string(Basename(file.path())); - - // Stat the file through a path that includes an empty component. We have to - // build this ourselves because JoinPath automatically removes empty - // components. - const std::string good_path = absl::StrCat(basedir.path(), "//", file_name); - struct stat buf; - EXPECT_THAT(lstat(good_path.c_str(), &buf), SyscallSucceeds()); -} - -TEST_F(StatTest, TrailingSlashNotCleanedReturnsENOTDIR) { - TempPath basedir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - - // Create a file in the basedir. - TempPath file = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(basedir.path())); - - // Stat the file with an extra "/" on the end of it. Since file is not a - // directory, this should return ENOTDIR. - const std::string bad_path = absl::StrCat(file.path(), "/"); - struct stat buf; - EXPECT_THAT(lstat(bad_path.c_str(), &buf), SyscallFailsWithErrno(ENOTDIR)); -} - -// Test fstatating a symlink directory. -TEST_F(StatTest, FstatatSymlinkDir) { - // Create a directory and symlink to it. - const auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - - const std::string symlink_to_dir = NewTempAbsPath(); - EXPECT_THAT(symlink(dir.path().c_str(), symlink_to_dir.c_str()), - SyscallSucceeds()); - auto cleanup = Cleanup([&symlink_to_dir]() { - EXPECT_THAT(unlink(symlink_to_dir.c_str()), SyscallSucceeds()); - }); - - // Fstatat the link with AT_SYMLINK_NOFOLLOW should return symlink data. - struct stat st = {}; - EXPECT_THAT( - fstatat(AT_FDCWD, symlink_to_dir.c_str(), &st, AT_SYMLINK_NOFOLLOW), - SyscallSucceeds()); - EXPECT_FALSE(S_ISDIR(st.st_mode)); - EXPECT_TRUE(S_ISLNK(st.st_mode)); - - // Fstatat the link should return dir data. - EXPECT_THAT(fstatat(AT_FDCWD, symlink_to_dir.c_str(), &st, 0), - SyscallSucceeds()); - EXPECT_TRUE(S_ISDIR(st.st_mode)); - EXPECT_FALSE(S_ISLNK(st.st_mode)); -} - -// Test fstatating a symlink directory with trailing slash. -TEST_F(StatTest, FstatatSymlinkDirWithTrailingSlash) { - // Create a directory and symlink to it. - const auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const std::string symlink_to_dir = NewTempAbsPath(); - EXPECT_THAT(symlink(dir.path().c_str(), symlink_to_dir.c_str()), - SyscallSucceeds()); - auto cleanup = Cleanup([&symlink_to_dir]() { - EXPECT_THAT(unlink(symlink_to_dir.c_str()), SyscallSucceeds()); - }); - - // Fstatat on the symlink with a trailing slash should return the directory - // data. - struct stat st = {}; - EXPECT_THAT( - fstatat(AT_FDCWD, absl::StrCat(symlink_to_dir, "/").c_str(), &st, 0), - SyscallSucceeds()); - EXPECT_TRUE(S_ISDIR(st.st_mode)); - EXPECT_FALSE(S_ISLNK(st.st_mode)); - - // Fstatat on the symlink with a trailing slash with AT_SYMLINK_NOFOLLOW - // should return the directory data. - // Symlink to directory with trailing slash will ignore AT_SYMLINK_NOFOLLOW. - EXPECT_THAT(fstatat(AT_FDCWD, absl::StrCat(symlink_to_dir, "/").c_str(), &st, - AT_SYMLINK_NOFOLLOW), - SyscallSucceeds()); - EXPECT_TRUE(S_ISDIR(st.st_mode)); - EXPECT_FALSE(S_ISLNK(st.st_mode)); -} - -// Test fstatating a symlink directory with a trailing slash -// should return same stat data with fstatating directory. -TEST_F(StatTest, FstatatSymlinkDirWithTrailingSlashSameInode) { - // Create a directory and symlink to it. - const auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - - // We are going to assert that the symlink inode id is the same as the linked - // dir's inode id. In order for the inode id to be stable across - // save/restore, it must be kept open. The FileDescriptor type will do that - // for us automatically. - auto fd = ASSERT_NO_ERRNO_AND_VALUE(Open(dir.path(), O_RDONLY | O_DIRECTORY)); - - const std::string symlink_to_dir = NewTempAbsPath(); - EXPECT_THAT(symlink(dir.path().c_str(), symlink_to_dir.c_str()), - SyscallSucceeds()); - auto cleanup = Cleanup([&symlink_to_dir]() { - EXPECT_THAT(unlink(symlink_to_dir.c_str()), SyscallSucceeds()); - }); - - // Fstatat on the symlink with a trailing slash should return the directory - // data. - struct stat st = {}; - EXPECT_THAT(fstatat(AT_FDCWD, absl::StrCat(symlink_to_dir, "/").c_str(), &st, - AT_SYMLINK_NOFOLLOW), - SyscallSucceeds()); - EXPECT_TRUE(S_ISDIR(st.st_mode)); - - // Dir and symlink should point to same inode. - struct stat st_dir = {}; - EXPECT_THAT( - fstatat(AT_FDCWD, dir.path().c_str(), &st_dir, AT_SYMLINK_NOFOLLOW), - SyscallSucceeds()); - EXPECT_EQ(st.st_ino, st_dir.st_ino); -} - -TEST_F(StatTest, LeadingDoubleSlash) { - // Create a file, and make sure we can stat it. - TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - struct stat st; - ASSERT_THAT(lstat(file.path().c_str(), &st), SyscallSucceeds()); - - // Now add an extra leading slash. - const std::string double_slash_path = absl::StrCat("/", file.path()); - ASSERT_TRUE(absl::StartsWith(double_slash_path, "//")); - - // We should be able to stat the new path, and it should resolve to the same - // file (same device and inode). - struct stat double_slash_st; - ASSERT_THAT(lstat(double_slash_path.c_str(), &double_slash_st), - SyscallSucceeds()); - EXPECT_EQ(st.st_dev, double_slash_st.st_dev); - EXPECT_EQ(st.st_ino, double_slash_st.st_ino); -} - -// Test that a rename doesn't change the underlying file. -TEST_F(StatTest, StatDoesntChangeAfterRename) { - const TempPath old_dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const TempPath new_path(NewTempAbsPath()); - - struct stat st_old = {}; - struct stat st_new = {}; - - ASSERT_THAT(stat(old_dir.path().c_str(), &st_old), SyscallSucceeds()); - ASSERT_THAT(rename(old_dir.path().c_str(), new_path.path().c_str()), - SyscallSucceeds()); - ASSERT_THAT(stat(new_path.path().c_str(), &st_new), SyscallSucceeds()); - - EXPECT_EQ(st_old.st_nlink, st_new.st_nlink); - EXPECT_EQ(st_old.st_dev, st_new.st_dev); - EXPECT_EQ(st_old.st_ino, st_new.st_ino); - EXPECT_EQ(st_old.st_mode, st_new.st_mode); - EXPECT_EQ(st_old.st_uid, st_new.st_uid); - EXPECT_EQ(st_old.st_gid, st_new.st_gid); - EXPECT_EQ(st_old.st_size, st_new.st_size); -} - -// Test link counts with a regular file as the child. -TEST_F(StatTest, LinkCountsWithRegularFileChild) { - const TempPath dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - - struct stat st_parent_before = {}; - ASSERT_THAT(stat(dir.path().c_str(), &st_parent_before), SyscallSucceeds()); - EXPECT_EQ(st_parent_before.st_nlink, 2); - - // Adding a regular file doesn't adjust the parent's link count. - const TempPath child = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(dir.path())); - - struct stat st_parent_after = {}; - ASSERT_THAT(stat(dir.path().c_str(), &st_parent_after), SyscallSucceeds()); - EXPECT_EQ(st_parent_after.st_nlink, 2); - - // The child should have a single link from the parent. - struct stat st_child = {}; - ASSERT_THAT(stat(child.path().c_str(), &st_child), SyscallSucceeds()); - EXPECT_TRUE(S_ISREG(st_child.st_mode)); - EXPECT_EQ(st_child.st_nlink, 1); - - // Finally unlinking the child should not affect the parent's link count. - ASSERT_THAT(unlink(child.path().c_str()), SyscallSucceeds()); - ASSERT_THAT(stat(dir.path().c_str(), &st_parent_after), SyscallSucceeds()); - EXPECT_EQ(st_parent_after.st_nlink, 2); -} - -// This test verifies that inodes remain around when there is an open fd -// after link count hits 0. -TEST_F(StatTest, ZeroLinksOpenFdRegularFileChild_NoRandomSave) { - // Setting the enviornment variable GVISOR_GOFER_UNCACHED to any value - // will prevent this test from running, see the tmpfs lifecycle. - // - // We need to support this because when a file is unlinked and we forward - // the stat to the gofer it would return ENOENT. - const char* uncached_gofer = getenv("GVISOR_GOFER_UNCACHED"); - SKIP_IF(uncached_gofer != nullptr); - - // We don't support saving unlinked files. - const DisableSave ds; - - const TempPath dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const TempPath child = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - dir.path(), "hello", TempPath::kDefaultFileMode)); - - // The child should have a single link from the parent. - struct stat st_child_before = {}; - ASSERT_THAT(stat(child.path().c_str(), &st_child_before), SyscallSucceeds()); - EXPECT_TRUE(S_ISREG(st_child_before.st_mode)); - EXPECT_EQ(st_child_before.st_nlink, 1); - EXPECT_EQ(st_child_before.st_size, 5); // Hello is 5 bytes. - - // Open the file so we can fstat after unlinking. - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(child.path(), O_RDONLY)); - - // Now a stat should return ENOENT but we should still be able to stat - // via the open fd and fstat. - ASSERT_THAT(unlink(child.path().c_str()), SyscallSucceeds()); - - // Since the file has no more links stat should fail. - struct stat st_child_after = {}; - ASSERT_THAT(stat(child.path().c_str(), &st_child_after), - SyscallFailsWithErrno(ENOENT)); - - // Fstat should still allow us to access the same file via the fd. - struct stat st_child_fd = {}; - ASSERT_THAT(fstat(fd.get(), &st_child_fd), SyscallSucceeds()); - EXPECT_EQ(st_child_before.st_dev, st_child_fd.st_dev); - EXPECT_EQ(st_child_before.st_ino, st_child_fd.st_ino); - EXPECT_EQ(st_child_before.st_mode, st_child_fd.st_mode); - EXPECT_EQ(st_child_before.st_uid, st_child_fd.st_uid); - EXPECT_EQ(st_child_before.st_gid, st_child_fd.st_gid); - EXPECT_EQ(st_child_before.st_size, st_child_fd.st_size); - - // TODO(b/34861058): This isn't ideal but since fstatfs(2) will always return - // OVERLAYFS_SUPER_MAGIC we have no way to know if this fs is backed by a - // gofer which doesn't support links. - EXPECT_TRUE(st_child_fd.st_nlink == 0 || st_child_fd.st_nlink == 1); -} - -// Test link counts with a directory as the child. -TEST_F(StatTest, LinkCountsWithDirChild) { - const TempPath dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - - // Before a child is added the two links are "." and the link from the parent. - struct stat st_parent_before = {}; - ASSERT_THAT(stat(dir.path().c_str(), &st_parent_before), SyscallSucceeds()); - EXPECT_EQ(st_parent_before.st_nlink, 2); - - // Create a subdirectory and stat for the parent link counts. - const TempPath sub_dir = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDirIn(dir.path())); - - // The three links are ".", the link from the parent, and the link from - // the child as "..". - struct stat st_parent_after = {}; - ASSERT_THAT(stat(dir.path().c_str(), &st_parent_after), SyscallSucceeds()); - EXPECT_EQ(st_parent_after.st_nlink, 3); - - // The child will have 1 link from the parent and 1 link which represents ".". - struct stat st_child = {}; - ASSERT_THAT(stat(sub_dir.path().c_str(), &st_child), SyscallSucceeds()); - EXPECT_TRUE(S_ISDIR(st_child.st_mode)); - EXPECT_EQ(st_child.st_nlink, 2); - - // Finally delete the child dir and the parent link count should return to 2. - ASSERT_THAT(rmdir(sub_dir.path().c_str()), SyscallSucceeds()); - ASSERT_THAT(stat(dir.path().c_str(), &st_parent_after), SyscallSucceeds()); - - // Now we should only have links from the parent and "." since the subdir - // has been removed. - EXPECT_EQ(st_parent_after.st_nlink, 2); -} - -// Test statting a child of a non-directory. -TEST_F(StatTest, ChildOfNonDir) { - // Create a path that has a child of a regular file. - const std::string filename = JoinPath(test_file_name_, "child"); - - // Statting the path should return ENOTDIR. - struct stat st; - EXPECT_THAT(lstat(filename.c_str(), &st), SyscallFailsWithErrno(ENOTDIR)); -} - -// Test lstating a symlink directory. -TEST_F(StatTest, LstatSymlinkDir) { - // Create a directory and symlink to it. - const auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const std::string symlink_to_dir = NewTempAbsPath(); - EXPECT_THAT(symlink(dir.path().c_str(), symlink_to_dir.c_str()), - SyscallSucceeds()); - auto cleanup = Cleanup([&symlink_to_dir]() { - EXPECT_THAT(unlink(symlink_to_dir.c_str()), SyscallSucceeds()); - }); - - // Lstat on the symlink should return symlink data. - struct stat st = {}; - ASSERT_THAT(lstat(symlink_to_dir.c_str(), &st), SyscallSucceeds()); - EXPECT_FALSE(S_ISDIR(st.st_mode)); - EXPECT_TRUE(S_ISLNK(st.st_mode)); - - // Lstat on the symlink with a trailing slash should return the directory - // data. - ASSERT_THAT(lstat(absl::StrCat(symlink_to_dir, "/").c_str(), &st), - SyscallSucceeds()); - EXPECT_TRUE(S_ISDIR(st.st_mode)); - EXPECT_FALSE(S_ISLNK(st.st_mode)); -} - -// Verify that we get an ELOOP from too many symbolic links even when there -// are directories in the middle. -TEST_F(StatTest, LstatELOOPPath) { - const TempPath dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - std::string subdir_base = "subdir"; - ASSERT_THAT(mkdir(JoinPath(dir.path(), subdir_base).c_str(), 0755), - SyscallSucceeds()); - - std::string target = JoinPath(dir.path(), subdir_base, subdir_base); - std::string dst = JoinPath("..", subdir_base); - ASSERT_THAT(symlink(dst.c_str(), target.c_str()), SyscallSucceeds()); - auto cleanup = Cleanup( - [&target]() { EXPECT_THAT(unlink(target.c_str()), SyscallSucceeds()); }); - - // Now build a path which is /subdir/subdir/... repeated many times so that - // we can build a path that is shorter than PATH_MAX but can still cause - // too many symbolic links. Note: Every other subdir is actually a directory - // so we're not in a situation where it's a -> b -> a -> b, where a and b - // are symbolic links. - std::string path = dir.path(); - std::string subdir_append = absl::StrCat("/", subdir_base); - do { - absl::StrAppend(&path, subdir_append); - // Keep appending /subdir until we would overflow PATH_MAX. - } while ((path.size() + subdir_append.size()) < PATH_MAX); - - struct stat s = {}; - ASSERT_THAT(lstat(path.c_str(), &s), SyscallFailsWithErrno(ELOOP)); -} - -// Ensure that inode allocation for anonymous devices work correctly across -// save/restore. In particular, inode numbers should be unique across S/R. -TEST(SimpleStatTest, AnonDeviceAllocatesUniqueInodesAcrossSaveRestore) { - // Use sockets as a convenient way to create inodes on an anonymous device. - int fd; - ASSERT_THAT(fd = socket(AF_UNIX, SOCK_STREAM, 0), SyscallSucceeds()); - FileDescriptor fd1(fd); - MaybeSave(); - ASSERT_THAT(fd = socket(AF_UNIX, SOCK_STREAM, 0), SyscallSucceeds()); - FileDescriptor fd2(fd); - - struct stat st1; - struct stat st2; - ASSERT_THAT(fstat(fd1.get(), &st1), SyscallSucceeds()); - ASSERT_THAT(fstat(fd2.get(), &st2), SyscallSucceeds()); - - // The two fds should have different inode numbers. - EXPECT_NE(st2.st_ino, st1.st_ino); - - // Verify again after another S/R cycle. The inode numbers should remain the - // same. - MaybeSave(); - - struct stat st1_after; - struct stat st2_after; - ASSERT_THAT(fstat(fd1.get(), &st1_after), SyscallSucceeds()); - ASSERT_THAT(fstat(fd2.get(), &st2_after), SyscallSucceeds()); - - EXPECT_EQ(st1_after.st_ino, st1.st_ino); - EXPECT_EQ(st2_after.st_ino, st2.st_ino); -} - -#ifndef SYS_statx -#if defined(__x86_64__) -#define SYS_statx 332 -#elif defined(__aarch64__) -#define SYS_statx 291 -#else -#error "Unknown architecture" -#endif -#endif // SYS_statx - -#ifndef STATX_ALL -#define STATX_ALL 0x00000fffU -#endif // STATX_ALL - -// struct kernel_statx_timestamp is a Linux statx_timestamp struct. -struct kernel_statx_timestamp { - int64_t tv_sec; - uint32_t tv_nsec; - int32_t __reserved; -}; - -// struct kernel_statx is a Linux statx struct. Old versions of glibc do not -// expose it. See include/uapi/linux/stat.h -struct kernel_statx { - uint32_t stx_mask; - uint32_t stx_blksize; - uint64_t stx_attributes; - uint32_t stx_nlink; - uint32_t stx_uid; - uint32_t stx_gid; - uint16_t stx_mode; - uint16_t __spare0[1]; - uint64_t stx_ino; - uint64_t stx_size; - uint64_t stx_blocks; - uint64_t stx_attributes_mask; - struct kernel_statx_timestamp stx_atime; - struct kernel_statx_timestamp stx_btime; - struct kernel_statx_timestamp stx_ctime; - struct kernel_statx_timestamp stx_mtime; - uint32_t stx_rdev_major; - uint32_t stx_rdev_minor; - uint32_t stx_dev_major; - uint32_t stx_dev_minor; - uint64_t __spare2[14]; -}; - -int statx(int dirfd, const char* pathname, int flags, unsigned int mask, - struct kernel_statx* statxbuf) { - return syscall(SYS_statx, dirfd, pathname, flags, mask, statxbuf); -} - -TEST_F(StatTest, StatxAbsPath) { - SKIP_IF(!IsRunningOnGvisor() && statx(-1, nullptr, 0, 0, 0) < 0 && - errno == ENOSYS); - - struct kernel_statx stx; - EXPECT_THAT(statx(-1, test_file_name_.c_str(), 0, STATX_ALL, &stx), - SyscallSucceeds()); - EXPECT_TRUE(S_ISREG(stx.stx_mode)); -} - -TEST_F(StatTest, StatxRelPathDirFD) { - SKIP_IF(!IsRunningOnGvisor() && statx(-1, nullptr, 0, 0, 0) < 0 && - errno == ENOSYS); - - struct kernel_statx stx; - auto const dirfd = - ASSERT_NO_ERRNO_AND_VALUE(Open(GetAbsoluteTestTmpdir(), O_RDONLY)); - auto filename = std::string(Basename(test_file_name_)); - - EXPECT_THAT(statx(dirfd.get(), filename.c_str(), 0, STATX_ALL, &stx), - SyscallSucceeds()); - EXPECT_TRUE(S_ISREG(stx.stx_mode)); -} - -TEST_F(StatTest, StatxRelPathCwd) { - SKIP_IF(!IsRunningOnGvisor() && statx(-1, nullptr, 0, 0, 0) < 0 && - errno == ENOSYS); - - ASSERT_THAT(chdir(GetAbsoluteTestTmpdir().c_str()), SyscallSucceeds()); - auto filename = std::string(Basename(test_file_name_)); - struct kernel_statx stx; - EXPECT_THAT(statx(AT_FDCWD, filename.c_str(), 0, STATX_ALL, &stx), - SyscallSucceeds()); - EXPECT_TRUE(S_ISREG(stx.stx_mode)); -} - -TEST_F(StatTest, StatxEmptyPath) { - SKIP_IF(!IsRunningOnGvisor() && statx(-1, nullptr, 0, 0, 0) < 0 && - errno == ENOSYS); - - const auto fd = ASSERT_NO_ERRNO_AND_VALUE(Open(test_file_name_, O_RDONLY)); - struct kernel_statx stx; - EXPECT_THAT(statx(fd.get(), "", AT_EMPTY_PATH, STATX_ALL, &stx), - SyscallSucceeds()); - EXPECT_TRUE(S_ISREG(stx.stx_mode)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/stat_times.cc b/test/syscalls/linux/stat_times.cc deleted file mode 100644 index 68c0bef09..000000000 --- a/test/syscalls/linux/stat_times.cc +++ /dev/null @@ -1,303 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <fcntl.h> -#include <sys/stat.h> - -#include <tuple> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/util/file_descriptor.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -using ::testing::IsEmpty; -using ::testing::Not; - -std::tuple<absl::Time, absl::Time, absl::Time> GetTime(const TempPath& file) { - struct stat statbuf = {}; - EXPECT_THAT(stat(file.path().c_str(), &statbuf), SyscallSucceeds()); - - const auto atime = absl::TimeFromTimespec(statbuf.st_atim); - const auto mtime = absl::TimeFromTimespec(statbuf.st_mtim); - const auto ctime = absl::TimeFromTimespec(statbuf.st_ctim); - return std::make_tuple(atime, mtime, ctime); -} - -enum class AtimeEffect { - Unchanged, - Changed, -}; - -enum class MtimeEffect { - Unchanged, - Changed, -}; - -enum class CtimeEffect { - Unchanged, - Changed, -}; - -// Tests that fn modifies the atime/mtime/ctime of path as specified. -void CheckTimes(const TempPath& path, std::function<void()> fn, - AtimeEffect atime_effect, MtimeEffect mtime_effect, - CtimeEffect ctime_effect) { - absl::Time atime, mtime, ctime; - std::tie(atime, mtime, ctime) = GetTime(path); - - // FIXME(b/132819225): gVisor filesystem timestamps inconsistently use the - // internal or host clock, which may diverge slightly. Allow some slack on - // times to account for the difference. - // - // Here we sleep for 1s so that initial creation of path doesn't fall within - // the before slack window. - absl::SleepFor(absl::Seconds(1)); - - const absl::Time before = absl::Now() - absl::Seconds(1); - - // Perform the op. - fn(); - - const absl::Time after = absl::Now() + absl::Seconds(1); - - absl::Time atime2, mtime2, ctime2; - std::tie(atime2, mtime2, ctime2) = GetTime(path); - - if (atime_effect == AtimeEffect::Changed) { - EXPECT_LE(before, atime2); - EXPECT_GE(after, atime2); - EXPECT_GT(atime2, atime); - } else { - EXPECT_EQ(atime2, atime); - } - - if (mtime_effect == MtimeEffect::Changed) { - EXPECT_LE(before, mtime2); - EXPECT_GE(after, mtime2); - EXPECT_GT(mtime2, mtime); - } else { - EXPECT_EQ(mtime2, mtime); - } - - if (ctime_effect == CtimeEffect::Changed) { - EXPECT_LE(before, ctime2); - EXPECT_GE(after, ctime2); - EXPECT_GT(ctime2, ctime); - } else { - EXPECT_EQ(ctime2, ctime); - } -} - -// File creation time is reflected in atime, mtime, and ctime. -TEST(StatTimesTest, FileCreation) { - const DisableSave ds; // Timing-related test. - - // Get a time for when the file is created. - // - // FIXME(b/132819225): See above. - const absl::Time before = absl::Now() - absl::Seconds(1); - const TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const absl::Time after = absl::Now() + absl::Seconds(1); - - absl::Time atime, mtime, ctime; - std::tie(atime, mtime, ctime) = GetTime(file); - - EXPECT_LE(before, atime); - EXPECT_LE(before, mtime); - EXPECT_LE(before, ctime); - EXPECT_GE(after, atime); - EXPECT_GE(after, mtime); - EXPECT_GE(after, ctime); -} - -// Calling chmod on a file changes ctime. -TEST(StatTimesTest, FileChmod) { - TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - - auto fn = [&] { - EXPECT_THAT(chmod(file.path().c_str(), 0666), SyscallSucceeds()); - }; - CheckTimes(file, fn, AtimeEffect::Unchanged, MtimeEffect::Unchanged, - CtimeEffect::Changed); -} - -// Renaming a file changes ctime. -TEST(StatTimesTest, FileRename) { - TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - - const std::string newpath = NewTempAbsPath(); - - auto fn = [&] { - ASSERT_THAT(rename(file.release().c_str(), newpath.c_str()), - SyscallSucceeds()); - file.reset(newpath); - }; - CheckTimes(file, fn, AtimeEffect::Unchanged, MtimeEffect::Unchanged, - CtimeEffect::Changed); -} - -// Renaming a file changes ctime, even with an open FD. -// -// NOTE(b/132732387): This is a regression test for fs/gofer failing to update -// cached ctime. -TEST(StatTimesTest, FileRenameOpenFD) { - TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - - // Holding an FD shouldn't affect behavior. - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDONLY)); - - const std::string newpath = NewTempAbsPath(); - - // FIXME(b/132814682): Restore fails with an uncached gofer and an open FD - // across rename. - // - // N.B. The logic here looks backwards because it isn't possible to - // conditionally disable save, only conditionally re-enable it. - DisableSave ds; - if (!getenv("GVISOR_GOFER_UNCACHED")) { - ds.reset(); - } - - auto fn = [&] { - ASSERT_THAT(rename(file.release().c_str(), newpath.c_str()), - SyscallSucceeds()); - file.reset(newpath); - }; - CheckTimes(file, fn, AtimeEffect::Unchanged, MtimeEffect::Unchanged, - CtimeEffect::Changed); -} - -// Calling utimes on a file changes ctime and the time that we ask to change -// (atime to now in this case). -TEST(StatTimesTest, FileUtimes) { - TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - - auto fn = [&] { - const struct timespec ts[2] = {{0, UTIME_NOW}, {0, UTIME_OMIT}}; - ASSERT_THAT(utimensat(AT_FDCWD, file.path().c_str(), ts, 0), - SyscallSucceeds()); - }; - CheckTimes(file, fn, AtimeEffect::Changed, MtimeEffect::Unchanged, - CtimeEffect::Changed); -} - -// Truncating a file changes mtime and ctime. -TEST(StatTimesTest, FileTruncate) { - const TempPath file = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateFileWith(GetAbsoluteTestTmpdir(), "yaaass", 0666)); - - auto fn = [&] { - EXPECT_THAT(truncate(file.path().c_str(), 0), SyscallSucceeds()); - }; - CheckTimes(file, fn, AtimeEffect::Unchanged, MtimeEffect::Changed, - CtimeEffect::Changed); -} - -// Writing a file changes mtime and ctime. -TEST(StatTimesTest, FileWrite) { - const TempPath file = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateFileWith(GetAbsoluteTestTmpdir(), "yaaass", 0666)); - - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR, 0)); - - auto fn = [&] { - const std::string contents = "all the single dollars"; - EXPECT_THAT(WriteFd(fd.get(), contents.data(), contents.size()), - SyscallSucceeds()); - }; - CheckTimes(file, fn, AtimeEffect::Unchanged, MtimeEffect::Changed, - CtimeEffect::Changed); -} - -// Reading a file changes atime. -TEST(StatTimesTest, FileRead) { - const std::string contents = "bills bills bills"; - const TempPath file = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateFileWith(GetAbsoluteTestTmpdir(), contents, 0666)); - - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDONLY, 0)); - - auto fn = [&] { - char buf[20]; - ASSERT_THAT(ReadFd(fd.get(), buf, sizeof(buf)), - SyscallSucceedsWithValue(contents.size())); - }; - CheckTimes(file, fn, AtimeEffect::Changed, MtimeEffect::Unchanged, - CtimeEffect::Unchanged); -} - -// Listing files in a directory changes atime. -TEST(StatTimesTest, DirList) { - const TempPath dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const TempPath file = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(dir.path())); - - auto fn = [&] { - const auto contents = ASSERT_NO_ERRNO_AND_VALUE(ListDir(dir.path(), false)); - EXPECT_THAT(contents, Not(IsEmpty())); - }; - CheckTimes(dir, fn, AtimeEffect::Changed, MtimeEffect::Unchanged, - CtimeEffect::Unchanged); -} - -// Creating a file in a directory changes mtime and ctime. -TEST(StatTimesTest, DirCreateFile) { - const TempPath dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - - TempPath file; - auto fn = [&] { - file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(dir.path())); - }; - CheckTimes(dir, fn, AtimeEffect::Unchanged, MtimeEffect::Changed, - CtimeEffect::Changed); -} - -// Creating a directory in a directory changes mtime and ctime. -TEST(StatTimesTest, DirCreateDir) { - const TempPath dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - - TempPath dir2; - auto fn = [&] { - dir2 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDirIn(dir.path())); - }; - CheckTimes(dir, fn, AtimeEffect::Unchanged, MtimeEffect::Changed, - CtimeEffect::Changed); -} - -// Removing a file from a directory changes mtime and ctime. -TEST(StatTimesTest, DirRemoveFile) { - const TempPath dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - - TempPath file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(dir.path())); - auto fn = [&] { file.reset(); }; - CheckTimes(dir, fn, AtimeEffect::Unchanged, MtimeEffect::Changed, - CtimeEffect::Changed); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/statfs.cc b/test/syscalls/linux/statfs.cc deleted file mode 100644 index aca51d30f..000000000 --- a/test/syscalls/linux/statfs.cc +++ /dev/null @@ -1,82 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <fcntl.h> -#include <sys/statfs.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "test/util/file_descriptor.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -TEST(StatfsTest, CannotStatBadPath) { - auto temp_file = NewTempAbsPathInDir("/tmp"); - - struct statfs st; - EXPECT_THAT(statfs(temp_file.c_str(), &st), SyscallFailsWithErrno(ENOENT)); -} - -TEST(StatfsTest, InternalTmpfs) { - auto temp_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - - struct statfs st; - EXPECT_THAT(statfs(temp_file.path().c_str(), &st), SyscallSucceeds()); -} - -TEST(StatfsTest, InternalDevShm) { - struct statfs st; - EXPECT_THAT(statfs("/dev/shm", &st), SyscallSucceeds()); -} - -TEST(StatfsTest, NameLen) { - struct statfs st; - EXPECT_THAT(statfs("/dev/shm", &st), SyscallSucceeds()); - - // This assumes that /dev/shm is tmpfs. - EXPECT_EQ(st.f_namelen, NAME_MAX); -} - -TEST(FstatfsTest, CannotStatBadFd) { - struct statfs st; - EXPECT_THAT(fstatfs(-1, &st), SyscallFailsWithErrno(EBADF)); -} - -TEST(FstatfsTest, InternalTmpfs) { - auto temp_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(temp_file.path(), O_RDONLY)); - - struct statfs st; - EXPECT_THAT(fstatfs(fd.get(), &st), SyscallSucceeds()); -} - -TEST(FstatfsTest, InternalDevShm) { - auto temp_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open("/dev/shm", O_RDONLY)); - - struct statfs st; - EXPECT_THAT(fstatfs(fd.get(), &st), SyscallSucceeds()); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/sticky.cc b/test/syscalls/linux/sticky.cc deleted file mode 100644 index 7e73325bf..000000000 --- a/test/syscalls/linux/sticky.cc +++ /dev/null @@ -1,123 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <fcntl.h> -#include <grp.h> -#include <sys/prctl.h> -#include <sys/types.h> -#include <unistd.h> - -#include <vector> - -#include "gtest/gtest.h" -#include "absl/flags/flag.h" -#include "test/util/capability_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/fs_util.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -ABSL_FLAG(int32_t, scratch_uid, 65534, "first scratch UID"); -ABSL_FLAG(int32_t, scratch_gid, 65534, "first scratch GID"); - -namespace gvisor { -namespace testing { - -namespace { - -TEST(StickyTest, StickyBitPermDenied) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SETUID))); - - auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - EXPECT_THAT(chmod(dir.path().c_str(), 0777 | S_ISVTX), SyscallSucceeds()); - std::string path = JoinPath(dir.path(), "NewDir"); - ASSERT_THAT(mkdir(path.c_str(), 0755), SyscallSucceeds()); - - // Drop privileges and change IDs only in child thread, or else this parent - // thread won't be able to open some log files after the test ends. - ScopedThread([&] { - // Drop privileges. - if (HaveCapability(CAP_FOWNER).ValueOrDie()) { - EXPECT_NO_ERRNO(SetCapability(CAP_FOWNER, false)); - } - - // Change EUID and EGID. - EXPECT_THAT( - syscall(SYS_setresgid, -1, absl::GetFlag(FLAGS_scratch_gid), -1), - SyscallSucceeds()); - EXPECT_THAT( - syscall(SYS_setresuid, -1, absl::GetFlag(FLAGS_scratch_uid), -1), - SyscallSucceeds()); - - EXPECT_THAT(rmdir(path.c_str()), SyscallFailsWithErrno(EPERM)); - }); -} - -TEST(StickyTest, StickyBitSameUID) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SETUID))); - - auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - EXPECT_THAT(chmod(dir.path().c_str(), 0777 | S_ISVTX), SyscallSucceeds()); - std::string path = JoinPath(dir.path(), "NewDir"); - ASSERT_THAT(mkdir(path.c_str(), 0755), SyscallSucceeds()); - - // Drop privileges and change IDs only in child thread, or else this parent - // thread won't be able to open some log files after the test ends. - ScopedThread([&] { - // Drop privileges. - if (HaveCapability(CAP_FOWNER).ValueOrDie()) { - EXPECT_NO_ERRNO(SetCapability(CAP_FOWNER, false)); - } - - // Change EGID. - EXPECT_THAT( - syscall(SYS_setresgid, -1, absl::GetFlag(FLAGS_scratch_gid), -1), - SyscallSucceeds()); - - // We still have the same EUID. - EXPECT_THAT(rmdir(path.c_str()), SyscallSucceeds()); - }); -} - -TEST(StickyTest, StickyBitCapFOWNER) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SETUID))); - - auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - EXPECT_THAT(chmod(dir.path().c_str(), 0777 | S_ISVTX), SyscallSucceeds()); - std::string path = JoinPath(dir.path(), "NewDir"); - ASSERT_THAT(mkdir(path.c_str(), 0755), SyscallSucceeds()); - - // Drop privileges and change IDs only in child thread, or else this parent - // thread won't be able to open some log files after the test ends. - ScopedThread([&] { - // Set PR_SET_KEEPCAPS. - EXPECT_THAT(prctl(PR_SET_KEEPCAPS, 1, 0, 0, 0), SyscallSucceeds()); - - // Change EUID and EGID. - EXPECT_THAT( - syscall(SYS_setresgid, -1, absl::GetFlag(FLAGS_scratch_gid), -1), - SyscallSucceeds()); - EXPECT_THAT( - syscall(SYS_setresuid, -1, absl::GetFlag(FLAGS_scratch_uid), -1), - SyscallSucceeds()); - - EXPECT_NO_ERRNO(SetCapability(CAP_FOWNER, true)); - EXPECT_THAT(rmdir(path.c_str()), SyscallSucceeds()); - }); -} -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/symlink.cc b/test/syscalls/linux/symlink.cc deleted file mode 100644 index 03ee1250d..000000000 --- a/test/syscalls/linux/symlink.cc +++ /dev/null @@ -1,377 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <fcntl.h> -#include <string.h> -#include <unistd.h> - -#include <string> - -#include "gtest/gtest.h" -#include "test/util/capability_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/fs_util.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -mode_t FilePermission(const std::string& path) { - struct stat buf = {0}; - TEST_CHECK(lstat(path.c_str(), &buf) == 0); - return buf.st_mode & 0777; -} - -// Test that name collisions are checked on the new link path, not the source -// path. Regression test for b/31782115. -TEST(SymlinkTest, CanCreateSymlinkWithCachedSourceDirent) { - const std::string srcname = NewTempAbsPath(); - const std::string newname = NewTempAbsPath(); - const std::string basedir = std::string(Dirname(srcname)); - ASSERT_EQ(basedir, Dirname(newname)); - - ASSERT_THAT(chdir(basedir.c_str()), SyscallSucceeds()); - - // Open the source node to cause the underlying dirent to be cached. It will - // remain cached while we have the file open. - int fd; - ASSERT_THAT(fd = open(srcname.c_str(), O_CREAT | O_RDWR, 0666), - SyscallSucceeds()); - FileDescriptor fd_closer(fd); - - // Attempt to create a symlink. If the bug exists, this will fail since the - // dirent link creation code will check for a name collision on the source - // link name. - EXPECT_THAT(symlink(std::string(Basename(srcname)).c_str(), - std::string(Basename(newname)).c_str()), - SyscallSucceeds()); -} - -TEST(SymlinkTest, CanCreateSymlinkFile) { - const std::string oldname = NewTempAbsPath(); - const std::string newname = NewTempAbsPath(); - - int fd; - ASSERT_THAT(fd = open(oldname.c_str(), O_CREAT | O_RDWR, 0666), - SyscallSucceeds()); - EXPECT_THAT(close(fd), SyscallSucceeds()); - - EXPECT_THAT(symlink(oldname.c_str(), newname.c_str()), SyscallSucceeds()); - EXPECT_EQ(FilePermission(newname), 0777); - - auto link = ASSERT_NO_ERRNO_AND_VALUE(ReadLink(newname)); - EXPECT_EQ(oldname, link); - - EXPECT_THAT(unlink(newname.c_str()), SyscallSucceeds()); - EXPECT_THAT(unlink(oldname.c_str()), SyscallSucceeds()); -} - -TEST(SymlinkTest, CanCreateSymlinkDir) { - const std::string olddir = NewTempAbsPath(); - const std::string newdir = NewTempAbsPath(); - - EXPECT_THAT(mkdir(olddir.c_str(), 0777), SyscallSucceeds()); - EXPECT_THAT(symlink(olddir.c_str(), newdir.c_str()), SyscallSucceeds()); - EXPECT_EQ(FilePermission(newdir), 0777); - - auto link = ASSERT_NO_ERRNO_AND_VALUE(ReadLink(newdir)); - EXPECT_EQ(olddir, link); - - EXPECT_THAT(unlink(newdir.c_str()), SyscallSucceeds()); - - ASSERT_THAT(rmdir(olddir.c_str()), SyscallSucceeds()); -} - -TEST(SymlinkTest, CannotCreateSymlinkInReadOnlyDir) { - // Drop capabilities that allow us to override file and directory permissions. - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_READ_SEARCH, false)); - - const std::string olddir = NewTempAbsPath(); - ASSERT_THAT(mkdir(olddir.c_str(), 0444), SyscallSucceeds()); - - const std::string newdir = NewTempAbsPathInDir(olddir); - EXPECT_THAT(symlink(olddir.c_str(), newdir.c_str()), - SyscallFailsWithErrno(EACCES)); - - ASSERT_THAT(rmdir(olddir.c_str()), SyscallSucceeds()); -} - -TEST(SymlinkTest, CannotSymlinkOverExistingFile) { - const auto oldfile = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const auto newfile = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - - EXPECT_THAT(symlink(oldfile.path().c_str(), newfile.path().c_str()), - SyscallFailsWithErrno(EEXIST)); -} - -TEST(SymlinkTest, CannotSymlinkOverExistingDir) { - const auto oldfile = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const auto newdir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - - EXPECT_THAT(symlink(oldfile.path().c_str(), newdir.path().c_str()), - SyscallFailsWithErrno(EEXIST)); -} - -TEST(SymlinkTest, OldnameIsEmpty) { - const std::string newname = NewTempAbsPath(); - EXPECT_THAT(symlink("", newname.c_str()), SyscallFailsWithErrno(ENOENT)); -} - -TEST(SymlinkTest, OldnameIsDangling) { - const std::string newname = NewTempAbsPath(); - EXPECT_THAT(symlink("/dangling", newname.c_str()), SyscallSucceeds()); - - // This is required for S/R random save tests, which pre-run this test - // in the same TEST_TMPDIR, which means that we need to clean it for any - // operations exclusively creating files, like symlink above. - EXPECT_THAT(unlink(newname.c_str()), SyscallSucceeds()); -} - -TEST(SymlinkTest, NewnameCannotExist) { - const std::string newname = - JoinPath(GetAbsoluteTestTmpdir(), "thisdoesnotexist", "foo"); - EXPECT_THAT(symlink("/thisdoesnotmatter", newname.c_str()), - SyscallFailsWithErrno(ENOENT)); -} - -TEST(SymlinkTest, CanEvaluateLink) { - const auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - - // We are going to assert that the symlink inode id is the same as the linked - // file's inode id. In order for the inode id to be stable across - // save/restore, it must be kept open. The FileDescriptor type will do that - // for us automatically. - auto fd = ASSERT_NO_ERRNO_AND_VALUE(Open(file.path(), O_RDWR)); - struct stat file_st; - EXPECT_THAT(fstat(fd.get(), &file_st), SyscallSucceeds()); - - const std::string link = NewTempAbsPath(); - EXPECT_THAT(symlink(file.path().c_str(), link.c_str()), SyscallSucceeds()); - EXPECT_EQ(FilePermission(link), 0777); - - auto linkfd = ASSERT_NO_ERRNO_AND_VALUE(Open(link.c_str(), O_RDWR)); - struct stat link_st; - EXPECT_THAT(fstat(linkfd.get(), &link_st), SyscallSucceeds()); - - // Check that in fact newname points to the file we expect. - EXPECT_EQ(file_st.st_dev, link_st.st_dev); - EXPECT_EQ(file_st.st_ino, link_st.st_ino); -} - -TEST(SymlinkTest, TargetIsNotMapped) { - const std::string oldname = NewTempAbsPath(); - const std::string newname = NewTempAbsPath(); - - int fd; - // Create the target so that when we read the link, it exists. - ASSERT_THAT(fd = open(oldname.c_str(), O_CREAT | O_RDWR, 0666), - SyscallSucceeds()); - EXPECT_THAT(close(fd), SyscallSucceeds()); - - // Create a symlink called newname that points to oldname. - EXPECT_THAT(symlink(oldname.c_str(), newname.c_str()), SyscallSucceeds()); - - std::vector<char> buf(1024); - int linksize; - // Read the link and assert that the oldname is still the same. - EXPECT_THAT(linksize = readlink(newname.c_str(), buf.data(), 1024), - SyscallSucceeds()); - EXPECT_EQ(0, strncmp(oldname.c_str(), buf.data(), linksize)); - - EXPECT_THAT(unlink(newname.c_str()), SyscallSucceeds()); - EXPECT_THAT(unlink(oldname.c_str()), SyscallSucceeds()); -} - -TEST(SymlinkTest, PreadFromSymlink) { - std::string name = NewTempAbsPath(); - int fd; - ASSERT_THAT(fd = open(name.c_str(), O_CREAT, 0644), SyscallSucceeds()); - ASSERT_THAT(close(fd), SyscallSucceeds()); - - std::string linkname = NewTempAbsPath(); - ASSERT_THAT(symlink(name.c_str(), linkname.c_str()), SyscallSucceeds()); - - ASSERT_THAT(fd = open(linkname.c_str(), O_RDONLY), SyscallSucceeds()); - - char buf[1024]; - EXPECT_THAT(pread64(fd, buf, 1024, 0), SyscallSucceeds()); - EXPECT_THAT(close(fd), SyscallSucceeds()); - - EXPECT_THAT(unlink(name.c_str()), SyscallSucceeds()); - EXPECT_THAT(unlink(linkname.c_str()), SyscallSucceeds()); -} - -TEST(SymlinkTest, SymlinkAtDegradedPermissions_NoRandomSave) { - // Drop capabilities that allow us to override file and directory permissions. - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_READ_SEARCH, false)); - - auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(dir.path())); - - int dirfd; - ASSERT_THAT(dirfd = open(dir.path().c_str(), O_DIRECTORY, 0), - SyscallSucceeds()); - - const DisableSave ds; // Permissions are dropped. - EXPECT_THAT(fchmod(dirfd, 0), SyscallSucceeds()); - - std::string basename = std::string(Basename(file.path())); - EXPECT_THAT(symlinkat("/dangling", dirfd, basename.c_str()), - SyscallFailsWithErrno(EACCES)); - EXPECT_THAT(close(dirfd), SyscallSucceeds()); -} - -TEST(SymlinkTest, ReadlinkAtDegradedPermissions_NoRandomSave) { - // Drop capabilities that allow us to override file and directory permissions. - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_READ_SEARCH, false)); - - auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const std::string oldpath = NewTempAbsPathInDir(dir.path()); - const std::string oldbase = std::string(Basename(oldpath)); - ASSERT_THAT(symlink("/dangling", oldpath.c_str()), SyscallSucceeds()); - - int dirfd; - EXPECT_THAT(dirfd = open(dir.path().c_str(), O_DIRECTORY, 0), - SyscallSucceeds()); - - const DisableSave ds; // Permissions are dropped. - EXPECT_THAT(fchmod(dirfd, 0), SyscallSucceeds()); - - char buf[1024]; - int linksize; - EXPECT_THAT(linksize = readlinkat(dirfd, oldbase.c_str(), buf, 1024), - SyscallFailsWithErrno(EACCES)); - EXPECT_THAT(close(dirfd), SyscallSucceeds()); -} - -TEST(SymlinkTest, ChmodSymlink) { - auto target = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const std::string newpath = NewTempAbsPath(); - ASSERT_THAT(symlink(target.path().c_str(), newpath.c_str()), - SyscallSucceeds()); - EXPECT_EQ(FilePermission(newpath), 0777); - EXPECT_THAT(chmod(newpath.c_str(), 0666), SyscallSucceeds()); - EXPECT_EQ(FilePermission(newpath), 0777); -} - -class ParamSymlinkTest : public ::testing::TestWithParam<std::string> {}; - -// Test that creating an existing symlink with creat will create the target. -TEST_P(ParamSymlinkTest, CreatLinkCreatesTarget) { - const std::string target = GetParam(); - const std::string linkpath = NewTempAbsPath(); - - ASSERT_THAT(symlink(target.c_str(), linkpath.c_str()), SyscallSucceeds()); - - int fd; - EXPECT_THAT(fd = creat(linkpath.c_str(), 0666), SyscallSucceeds()); - ASSERT_THAT(close(fd), SyscallSucceeds()); - - ASSERT_THAT(chdir(GetAbsoluteTestTmpdir().c_str()), SyscallSucceeds()); - struct stat st; - EXPECT_THAT(stat(target.c_str(), &st), SyscallSucceeds()); - - ASSERT_THAT(unlink(linkpath.c_str()), SyscallSucceeds()); - ASSERT_THAT(unlink(target.c_str()), SyscallSucceeds()); -} - -// Test that opening an existing symlink with O_CREAT will create the target. -TEST_P(ParamSymlinkTest, OpenLinkCreatesTarget) { - const std::string target = GetParam(); - const std::string linkpath = NewTempAbsPath(); - - ASSERT_THAT(symlink(target.c_str(), linkpath.c_str()), SyscallSucceeds()); - - int fd; - EXPECT_THAT(fd = open(linkpath.c_str(), O_CREAT, 0666), SyscallSucceeds()); - ASSERT_THAT(close(fd), SyscallSucceeds()); - - ASSERT_THAT(chdir(GetAbsoluteTestTmpdir().c_str()), SyscallSucceeds()); - struct stat st; - EXPECT_THAT(stat(target.c_str(), &st), SyscallSucceeds()); - - ASSERT_THAT(unlink(linkpath.c_str()), SyscallSucceeds()); - ASSERT_THAT(unlink(target.c_str()), SyscallSucceeds()); -} - -// Test that opening a self-symlink with O_CREAT will fail with ELOOP. -TEST_P(ParamSymlinkTest, CreateExistingSelfLink) { - ASSERT_THAT(chdir(GetAbsoluteTestTmpdir().c_str()), SyscallSucceeds()); - - const std::string linkpath = GetParam(); - ASSERT_THAT(symlink(linkpath.c_str(), linkpath.c_str()), SyscallSucceeds()); - - EXPECT_THAT(open(linkpath.c_str(), O_CREAT, 0666), - SyscallFailsWithErrno(ELOOP)); - - ASSERT_THAT(unlink(linkpath.c_str()), SyscallSucceeds()); -} - -// Test that opening a file that is a symlink to its parent directory fails -// with ELOOP. -TEST_P(ParamSymlinkTest, CreateExistingParentLink) { - ASSERT_THAT(chdir(GetAbsoluteTestTmpdir().c_str()), SyscallSucceeds()); - - const std::string linkpath = GetParam(); - const std::string target = JoinPath(linkpath, "child"); - ASSERT_THAT(symlink(target.c_str(), linkpath.c_str()), SyscallSucceeds()); - - EXPECT_THAT(open(linkpath.c_str(), O_CREAT, 0666), - SyscallFailsWithErrno(ELOOP)); - - ASSERT_THAT(unlink(linkpath.c_str()), SyscallSucceeds()); -} - -// Test that opening an existing symlink with O_CREAT|O_EXCL will fail with -// EEXIST. -TEST_P(ParamSymlinkTest, OpenLinkExclFails) { - const std::string target = GetParam(); - const std::string linkpath = NewTempAbsPath(); - - ASSERT_THAT(symlink(target.c_str(), linkpath.c_str()), SyscallSucceeds()); - - EXPECT_THAT(open(linkpath.c_str(), O_CREAT | O_EXCL, 0666), - SyscallFailsWithErrno(EEXIST)); - - ASSERT_THAT(unlink(linkpath.c_str()), SyscallSucceeds()); -} - -// Test that opening an existing symlink with O_CREAT|O_NOFOLLOW will fail with -// ELOOP. -TEST_P(ParamSymlinkTest, OpenLinkNoFollowFails) { - const std::string target = GetParam(); - const std::string linkpath = NewTempAbsPath(); - - ASSERT_THAT(symlink(target.c_str(), linkpath.c_str()), SyscallSucceeds()); - - EXPECT_THAT(open(linkpath.c_str(), O_CREAT | O_NOFOLLOW, 0666), - SyscallFailsWithErrno(ELOOP)); - - ASSERT_THAT(unlink(linkpath.c_str()), SyscallSucceeds()); -} - -INSTANTIATE_TEST_SUITE_P(AbsAndRelTarget, ParamSymlinkTest, - ::testing::Values(NewTempAbsPath(), NewTempRelPath())); - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/sync.cc b/test/syscalls/linux/sync.cc deleted file mode 100644 index 8aa2525a9..000000000 --- a/test/syscalls/linux/sync.cc +++ /dev/null @@ -1,59 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <fcntl.h> -#include <stdio.h> -#include <sys/syscall.h> -#include <unistd.h> - -#include <string> - -#include "gtest/gtest.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -TEST(SyncTest, SyncEverything) { - ASSERT_THAT(syscall(SYS_sync), SyscallSucceeds()); -} - -TEST(SyncTest, SyncFileSytem) { - int fd; - auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - ASSERT_THAT(fd = open(f.path().c_str(), O_RDONLY), SyscallSucceeds()); - EXPECT_THAT(syncfs(fd), SyscallSucceeds()); - EXPECT_THAT(close(fd), SyscallSucceeds()); -} - -TEST(SyncTest, SyncFromPipe) { - int pipes[2]; - EXPECT_THAT(pipe(pipes), SyscallSucceeds()); - EXPECT_THAT(syncfs(pipes[0]), SyscallSucceeds()); - EXPECT_THAT(syncfs(pipes[1]), SyscallSucceeds()); - EXPECT_THAT(close(pipes[0]), SyscallSucceeds()); - EXPECT_THAT(close(pipes[1]), SyscallSucceeds()); -} - -TEST(SyncTest, CannotSyncFileSytemAtBadFd) { - EXPECT_THAT(syncfs(-1), SyscallFailsWithErrno(EBADF)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/sync_file_range.cc b/test/syscalls/linux/sync_file_range.cc deleted file mode 100644 index 36cc42043..000000000 --- a/test/syscalls/linux/sync_file_range.cc +++ /dev/null @@ -1,112 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <fcntl.h> -#include <stdio.h> -#include <unistd.h> - -#include <string> - -#include "gtest/gtest.h" -#include "test/util/file_descriptor.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -TEST(SyncFileRangeTest, TempFileSucceeds) { - auto tmpfile = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - auto f = ASSERT_NO_ERRNO_AND_VALUE(Open(tmpfile.path(), O_RDWR)); - constexpr char data[] = "some data to sync"; - int fd = f.get(); - - EXPECT_THAT(write(fd, data, sizeof(data)), - SyscallSucceedsWithValue(sizeof(data))); - EXPECT_THAT(sync_file_range(fd, 0, 0, SYNC_FILE_RANGE_WRITE), - SyscallSucceeds()); - EXPECT_THAT(sync_file_range(fd, 0, 0, 0), SyscallSucceeds()); - EXPECT_THAT( - sync_file_range(fd, 0, 0, - SYNC_FILE_RANGE_WRITE | SYNC_FILE_RANGE_WAIT_AFTER | - SYNC_FILE_RANGE_WAIT_BEFORE), - SyscallSucceeds()); - EXPECT_THAT(sync_file_range( - fd, 0, 1, SYNC_FILE_RANGE_WRITE | SYNC_FILE_RANGE_WAIT_AFTER), - SyscallSucceeds()); - EXPECT_THAT(sync_file_range( - fd, 1, 0, SYNC_FILE_RANGE_WRITE | SYNC_FILE_RANGE_WAIT_AFTER), - SyscallSucceeds()); -} - -TEST(SyncFileRangeTest, CannotSyncFileRangeOnUnopenedFd) { - auto tmpfile = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - auto f = ASSERT_NO_ERRNO_AND_VALUE(Open(tmpfile.path(), O_RDWR)); - constexpr char data[] = "some data to sync"; - int fd = f.get(); - - EXPECT_THAT(write(fd, data, sizeof(data)), - SyscallSucceedsWithValue(sizeof(data))); - - pid_t pid = fork(); - if (pid == 0) { - f.reset(); - - // fd is now invalid. - TEST_CHECK(sync_file_range(fd, 0, 0, SYNC_FILE_RANGE_WRITE) == -1); - TEST_PCHECK(errno == EBADF); - _exit(0); - } - ASSERT_THAT(pid, SyscallSucceeds()); - - int status = 0; - ASSERT_THAT(waitpid(pid, &status, 0), SyscallSucceedsWithValue(pid)); - EXPECT_TRUE(WIFEXITED(status)); - EXPECT_EQ(WEXITSTATUS(status), 0); -} - -TEST(SyncFileRangeTest, BadArgs) { - auto tmpfile = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - auto f = ASSERT_NO_ERRNO_AND_VALUE(Open(tmpfile.path(), O_RDWR)); - int fd = f.get(); - - EXPECT_THAT(sync_file_range(fd, -1, 0, 0), SyscallFailsWithErrno(EINVAL)); - EXPECT_THAT(sync_file_range(fd, 0, -1, 0), SyscallFailsWithErrno(EINVAL)); - EXPECT_THAT(sync_file_range(fd, 8912, INT64_MAX - 4096, 0), - SyscallFailsWithErrno(EINVAL)); -} - -TEST(SyncFileRangeTest, CannotSyncFileRangeWithWaitBefore) { - auto tmpfile = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - auto f = ASSERT_NO_ERRNO_AND_VALUE(Open(tmpfile.path(), O_RDWR)); - constexpr char data[] = "some data to sync"; - int fd = f.get(); - - EXPECT_THAT(write(fd, data, sizeof(data)), - SyscallSucceedsWithValue(sizeof(data))); - if (IsRunningOnGvisor()) { - EXPECT_THAT(sync_file_range(fd, 0, 0, SYNC_FILE_RANGE_WAIT_BEFORE), - SyscallFailsWithErrno(ENOSYS)); - EXPECT_THAT( - sync_file_range(fd, 0, 0, - SYNC_FILE_RANGE_WAIT_BEFORE | SYNC_FILE_RANGE_WRITE), - SyscallFailsWithErrno(ENOSYS)); - } -} - -} // namespace -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/sysinfo.cc b/test/syscalls/linux/sysinfo.cc deleted file mode 100644 index 1a71256da..000000000 --- a/test/syscalls/linux/sysinfo.cc +++ /dev/null @@ -1,86 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// This is a very simple sanity test to validate that the sysinfo syscall is -// supported by gvisor and returns sane values. -#include <sys/syscall.h> -#include <sys/sysinfo.h> -#include <sys/types.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -TEST(SysinfoTest, SysinfoIsCallable) { - struct sysinfo ignored = {}; - EXPECT_THAT(syscall(SYS_sysinfo, &ignored), SyscallSucceedsWithValue(0)); -} - -TEST(SysinfoTest, EfaultProducedOnBadAddress) { - // Validate that we return EFAULT when a bad address is provided. - // specified by man 2 sysinfo - EXPECT_THAT(syscall(SYS_sysinfo, nullptr), SyscallFailsWithErrno(EFAULT)); -} - -TEST(SysinfoTest, TotalRamSaneValue) { - struct sysinfo s = {}; - EXPECT_THAT(sysinfo(&s), SyscallSucceedsWithValue(0)); - EXPECT_GT(s.totalram, 0); -} - -TEST(SysinfoTest, MemunitSet) { - struct sysinfo s = {}; - EXPECT_THAT(sysinfo(&s), SyscallSucceedsWithValue(0)); - EXPECT_GE(s.mem_unit, 1); -} - -TEST(SysinfoTest, UptimeSaneValue) { - struct sysinfo s = {}; - EXPECT_THAT(sysinfo(&s), SyscallSucceedsWithValue(0)); - EXPECT_GE(s.uptime, 0); -} - -TEST(SysinfoTest, UptimeIncreasingValue) { - struct sysinfo s = {}; - EXPECT_THAT(sysinfo(&s), SyscallSucceedsWithValue(0)); - absl::SleepFor(absl::Seconds(2)); - struct sysinfo s2 = {}; - EXPECT_THAT(sysinfo(&s2), SyscallSucceedsWithValue(0)); - EXPECT_LT(s.uptime, s2.uptime); -} - -TEST(SysinfoTest, FreeRamSaneValue) { - struct sysinfo s = {}; - EXPECT_THAT(sysinfo(&s), SyscallSucceedsWithValue(0)); - EXPECT_GT(s.freeram, 0); - EXPECT_LT(s.freeram, s.totalram); -} - -TEST(SysinfoTest, NumProcsSaneValue) { - struct sysinfo s = {}; - EXPECT_THAT(sysinfo(&s), SyscallSucceedsWithValue(0)); - EXPECT_GT(s.procs, 0); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/syslog.cc b/test/syscalls/linux/syslog.cc deleted file mode 100644 index 9a7407d96..000000000 --- a/test/syscalls/linux/syslog.cc +++ /dev/null @@ -1,51 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <sys/klog.h> -#include <sys/syscall.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -constexpr int SYSLOG_ACTION_READ_ALL = 3; -constexpr int SYSLOG_ACTION_SIZE_BUFFER = 10; - -int Syslog(int type, char* buf, int len) { - return syscall(__NR_syslog, type, buf, len); -} - -// Only SYSLOG_ACTION_SIZE_BUFFER and SYSLOG_ACTION_READ_ALL are implemented in -// gVisor. - -TEST(Syslog, Size) { - EXPECT_THAT(Syslog(SYSLOG_ACTION_SIZE_BUFFER, nullptr, 0), SyscallSucceeds()); -} - -TEST(Syslog, ReadAll) { - // There might not be anything to read, so we can't check the write count. - char buf[100]; - EXPECT_THAT(Syslog(SYSLOG_ACTION_READ_ALL, buf, sizeof(buf)), - SyscallSucceeds()); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/sysret.cc b/test/syscalls/linux/sysret.cc deleted file mode 100644 index 819fa655a..000000000 --- a/test/syscalls/linux/sysret.cc +++ /dev/null @@ -1,113 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// Tests to verify that the behavior of linux and gvisor matches when -// 'sysret' returns to bad (aka non-canonical) %rip or %rsp. -#include <sys/ptrace.h> -#include <sys/user.h> - -#include "gtest/gtest.h" -#include "test/util/logging.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -constexpr uint64_t kNonCanonicalRip = 0xCCCC000000000000; -constexpr uint64_t kNonCanonicalRsp = 0xFFFF000000000000; - -class SysretTest : public ::testing::Test { - protected: - struct user_regs_struct regs_; - pid_t child_; - - void SetUp() override { - pid_t pid = fork(); - - // Child. - if (pid == 0) { - TEST_PCHECK(ptrace(PTRACE_TRACEME, 0, 0, 0) == 0); - MaybeSave(); - TEST_PCHECK(raise(SIGSTOP) == 0); - MaybeSave(); - _exit(0); - } - - // Parent. - int status; - ASSERT_THAT(pid, SyscallSucceeds()); // Might still be < 0. - ASSERT_THAT(waitpid(pid, &status, 0), SyscallSucceedsWithValue(pid)); - EXPECT_TRUE(WIFSTOPPED(status) && WSTOPSIG(status) == SIGSTOP); - ASSERT_THAT(ptrace(PTRACE_GETREGS, pid, 0, ®s_), SyscallSucceeds()); - - child_ = pid; - } - - void Detach() { - ASSERT_THAT(ptrace(PTRACE_DETACH, child_, 0, 0), SyscallSucceeds()); - } - - void SetRip(uint64_t newrip) { - regs_.rip = newrip; - ASSERT_THAT(ptrace(PTRACE_SETREGS, child_, 0, ®s_), SyscallSucceeds()); - } - - void SetRsp(uint64_t newrsp) { - regs_.rsp = newrsp; - ASSERT_THAT(ptrace(PTRACE_SETREGS, child_, 0, ®s_), SyscallSucceeds()); - } - - // Wait waits for the child pid and returns the exit status. - int Wait() { - int status; - while (true) { - int rval = wait4(child_, &status, 0, NULL); - if (rval < 0) { - return rval; - } - if (rval == child_) { - return status; - } - } - } -}; - -TEST_F(SysretTest, JustDetach) { - Detach(); - int status = Wait(); - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) - << "status = " << status; -} - -TEST_F(SysretTest, BadRip) { - SetRip(kNonCanonicalRip); - Detach(); - int status = Wait(); - EXPECT_TRUE(WIFSIGNALED(status) && WTERMSIG(status) == SIGSEGV) - << "status = " << status; -} - -TEST_F(SysretTest, BadRsp) { - SetRsp(kNonCanonicalRsp); - Detach(); - int status = Wait(); - EXPECT_TRUE(WIFSIGNALED(status) && WTERMSIG(status) == SIGBUS) - << "status = " << status; -} -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/tcp_socket.cc b/test/syscalls/linux/tcp_socket.cc deleted file mode 100644 index c4591a3b9..000000000 --- a/test/syscalls/linux/tcp_socket.cc +++ /dev/null @@ -1,1358 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <fcntl.h> -#include <netinet/in.h> -#include <netinet/tcp.h> -#include <poll.h> -#include <sys/ioctl.h> -#include <sys/socket.h> -#include <unistd.h> - -#include <limits> -#include <vector> - -#include "gtest/gtest.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/posix_error.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -PosixErrorOr<sockaddr_storage> InetLoopbackAddr(int family) { - struct sockaddr_storage addr; - memset(&addr, 0, sizeof(addr)); - addr.ss_family = family; - switch (family) { - case AF_INET: - reinterpret_cast<struct sockaddr_in*>(&addr)->sin_addr.s_addr = - htonl(INADDR_LOOPBACK); - break; - case AF_INET6: - reinterpret_cast<struct sockaddr_in6*>(&addr)->sin6_addr = - in6addr_loopback; - break; - default: - return PosixError(EINVAL, - absl::StrCat("unknown socket family: ", family)); - } - return addr; -} - -// Fixture for tests parameterized by the address family to use (AF_INET and -// AF_INET6) when creating sockets. -class TcpSocketTest : public ::testing::TestWithParam<int> { - protected: - // Creates three sockets that will be used by test cases -- a listener, one - // that connects, and the accepted one. - void SetUp() override; - - // Closes the sockets created by SetUp(). - void TearDown() override; - - // Listening socket. - int listener_ = -1; - - // Socket connected via connect(). - int s_ = -1; - - // Socket connected via accept(). - int t_ = -1; - - // Initial size of the send buffer. - int sendbuf_size_ = -1; -}; - -void TcpSocketTest::SetUp() { - ASSERT_THAT(listener_ = socket(GetParam(), SOCK_STREAM, IPPROTO_TCP), - SyscallSucceeds()); - - ASSERT_THAT(s_ = socket(GetParam(), SOCK_STREAM, IPPROTO_TCP), - SyscallSucceeds()); - - // Initialize address to the loopback one. - sockaddr_storage addr = - ASSERT_NO_ERRNO_AND_VALUE(InetLoopbackAddr(GetParam())); - socklen_t addrlen = sizeof(addr); - - // Bind to some port then start listening. - ASSERT_THAT( - bind(listener_, reinterpret_cast<struct sockaddr*>(&addr), addrlen), - SyscallSucceeds()); - - ASSERT_THAT(listen(listener_, SOMAXCONN), SyscallSucceeds()); - - // Get the address we're listening on, then connect to it. We need to do this - // because we're allowing the stack to pick a port for us. - ASSERT_THAT(getsockname(listener_, reinterpret_cast<struct sockaddr*>(&addr), - &addrlen), - SyscallSucceeds()); - - ASSERT_THAT(RetryEINTR(connect)(s_, reinterpret_cast<struct sockaddr*>(&addr), - addrlen), - SyscallSucceeds()); - - // Get the initial send buffer size. - socklen_t optlen = sizeof(sendbuf_size_); - ASSERT_THAT(getsockopt(s_, SOL_SOCKET, SO_SNDBUF, &sendbuf_size_, &optlen), - SyscallSucceeds()); - - // Accept the connection. - ASSERT_THAT(t_ = RetryEINTR(accept)(listener_, nullptr, nullptr), - SyscallSucceeds()); -} - -void TcpSocketTest::TearDown() { - EXPECT_THAT(close(listener_), SyscallSucceeds()); - if (s_ >= 0) { - EXPECT_THAT(close(s_), SyscallSucceeds()); - } - if (t_ >= 0) { - EXPECT_THAT(close(t_), SyscallSucceeds()); - } -} - -TEST_P(TcpSocketTest, ConnectOnEstablishedConnection) { - sockaddr_storage addr = - ASSERT_NO_ERRNO_AND_VALUE(InetLoopbackAddr(GetParam())); - socklen_t addrlen = sizeof(addr); - - ASSERT_THAT( - connect(s_, reinterpret_cast<const struct sockaddr*>(&addr), addrlen), - SyscallFailsWithErrno(EISCONN)); - ASSERT_THAT( - connect(t_, reinterpret_cast<const struct sockaddr*>(&addr), addrlen), - SyscallFailsWithErrno(EISCONN)); -} - -TEST_P(TcpSocketTest, DataCoalesced) { - char buf[10]; - - // Write in two steps. - ASSERT_THAT(RetryEINTR(write)(s_, buf, sizeof(buf) / 2), - SyscallSucceedsWithValue(sizeof(buf) / 2)); - ASSERT_THAT(RetryEINTR(write)(s_, buf, sizeof(buf) / 2), - SyscallSucceedsWithValue(sizeof(buf) / 2)); - - // Allow stack to process both packets. - absl::SleepFor(absl::Seconds(1)); - - // Read in one shot. - EXPECT_THAT(RetryEINTR(recv)(t_, buf, sizeof(buf), 0), - SyscallSucceedsWithValue(sizeof(buf))); -} - -TEST_P(TcpSocketTest, SenderAddressIgnored) { - char buf[3]; - ASSERT_THAT(RetryEINTR(write)(s_, buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - - struct sockaddr_storage addr; - socklen_t addrlen = sizeof(addr); - memset(&addr, 0, sizeof(addr)); - - ASSERT_THAT( - RetryEINTR(recvfrom)(t_, buf, sizeof(buf), 0, - reinterpret_cast<struct sockaddr*>(&addr), &addrlen), - SyscallSucceedsWithValue(3)); - - // Check that addr remains zeroed-out. - const char* ptr = reinterpret_cast<char*>(&addr); - for (size_t i = 0; i < sizeof(addr); i++) { - EXPECT_EQ(ptr[i], 0); - } -} - -TEST_P(TcpSocketTest, SenderAddressIgnoredOnPeek) { - char buf[3]; - ASSERT_THAT(RetryEINTR(write)(s_, buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - - struct sockaddr_storage addr; - socklen_t addrlen = sizeof(addr); - memset(&addr, 0, sizeof(addr)); - - ASSERT_THAT( - RetryEINTR(recvfrom)(t_, buf, sizeof(buf), MSG_PEEK, - reinterpret_cast<struct sockaddr*>(&addr), &addrlen), - SyscallSucceedsWithValue(3)); - - // Check that addr remains zeroed-out. - const char* ptr = reinterpret_cast<char*>(&addr); - for (size_t i = 0; i < sizeof(addr); i++) { - EXPECT_EQ(ptr[i], 0); - } -} - -TEST_P(TcpSocketTest, SendtoAddressIgnored) { - struct sockaddr_storage addr; - memset(&addr, 0, sizeof(addr)); - addr.ss_family = GetParam(); // FIXME(b/63803955) - - char data = '\0'; - EXPECT_THAT( - RetryEINTR(sendto)(s_, &data, sizeof(data), 0, - reinterpret_cast<sockaddr*>(&addr), sizeof(addr)), - SyscallSucceedsWithValue(1)); -} - -TEST_P(TcpSocketTest, WritevZeroIovec) { - // 2 bytes just to be safe and have vecs[1] not point to something random - // (even though length is 0). - char buf[2]; - char recv_buf[1]; - - // Construct a vec where the final vector is of length 0. - iovec vecs[2] = {}; - vecs[0].iov_base = buf; - vecs[0].iov_len = 1; - vecs[1].iov_base = buf + 1; - vecs[1].iov_len = 0; - - EXPECT_THAT(RetryEINTR(writev)(s_, vecs, 2), SyscallSucceedsWithValue(1)); - - EXPECT_THAT(RetryEINTR(recv)(t_, recv_buf, 1, 0), - SyscallSucceedsWithValue(1)); - EXPECT_EQ(memcmp(recv_buf, buf, 1), 0); -} - -TEST_P(TcpSocketTest, ZeroWriteAllowed) { - char buf[3]; - // Send a zero length packet. - ASSERT_THAT(RetryEINTR(write)(s_, buf, 0), SyscallSucceedsWithValue(0)); - // Verify that there is no packet available. - EXPECT_THAT(RetryEINTR(recv)(t_, buf, sizeof(buf), MSG_DONTWAIT), - SyscallFailsWithErrno(EAGAIN)); -} - -// Test that a non-blocking write with a buffer that is larger than the send -// buffer size will not actually write the whole thing at once. Regression test -// for b/64438887. -TEST_P(TcpSocketTest, NonblockingLargeWrite) { - // Set the FD to O_NONBLOCK. - int opts; - ASSERT_THAT(opts = fcntl(s_, F_GETFL), SyscallSucceeds()); - opts |= O_NONBLOCK; - ASSERT_THAT(fcntl(s_, F_SETFL, opts), SyscallSucceeds()); - - // Allocate a buffer three times the size of the send buffer. We do this with - // a vector to avoid allocating on the stack. - int size = 3 * sendbuf_size_; - std::vector<char> buf(size); - - // Try to write the whole thing. - int n; - ASSERT_THAT(n = RetryEINTR(write)(s_, buf.data(), size), SyscallSucceeds()); - - // We should have written something, but not the whole thing. - EXPECT_GT(n, 0); - EXPECT_LT(n, size); -} - -// Test that a blocking write with a buffer that is larger than the send buffer -// will block until the entire buffer is sent. -TEST_P(TcpSocketTest, BlockingLargeWrite_NoRandomSave) { - // Allocate a buffer three times the size of the send buffer on the heap. We - // do this as a vector to avoid allocating on the stack. - int size = 3 * sendbuf_size_; - std::vector<char> writebuf(size); - - // Start reading the response in a loop. - int read_bytes = 0; - ScopedThread t([this, &read_bytes]() { - // Avoid interrupting the blocking write in main thread. - const DisableSave ds; - - // Take ownership of the FD so that we close it on failure. This will - // unblock the blocking write below. - FileDescriptor fd(t_); - t_ = -1; - - char readbuf[2500] = {}; - int n = -1; - while (n != 0) { - ASSERT_THAT(n = RetryEINTR(read)(fd.get(), &readbuf, sizeof(readbuf)), - SyscallSucceeds()); - read_bytes += n; - } - }); - - // Try to write the whole thing. - int n; - ASSERT_THAT(n = WriteFd(s_, writebuf.data(), size), SyscallSucceeds()); - - // We should have written the whole thing. - EXPECT_EQ(n, size); - EXPECT_THAT(close(s_), SyscallSucceedsWithValue(0)); - s_ = -1; - t.Join(); - - // We should have read the whole thing. - EXPECT_EQ(read_bytes, size); -} - -// Test that a send with MSG_DONTWAIT flag and buffer that larger than the send -// buffer size will not write the whole thing. -TEST_P(TcpSocketTest, LargeSendDontWait) { - // Allocate a buffer three times the size of the send buffer. We do this on - // with a vector to avoid allocating on the stack. - int size = 3 * sendbuf_size_; - std::vector<char> buf(size); - - // Try to write the whole thing with MSG_DONTWAIT flag, which can - // return a partial write. - int n; - ASSERT_THAT(n = RetryEINTR(send)(s_, buf.data(), size, MSG_DONTWAIT), - SyscallSucceeds()); - - // We should have written something, but not the whole thing. - EXPECT_GT(n, 0); - EXPECT_LT(n, size); -} - -// Test that a send on a non-blocking socket with a buffer that larger than the -// send buffer will not write the whole thing at once. -TEST_P(TcpSocketTest, NonblockingLargeSend) { - // Set the FD to O_NONBLOCK. - int opts; - ASSERT_THAT(opts = fcntl(s_, F_GETFL), SyscallSucceeds()); - opts |= O_NONBLOCK; - ASSERT_THAT(fcntl(s_, F_SETFL, opts), SyscallSucceeds()); - - // Allocate a buffer three times the size of the send buffer. We do this on - // with a vector to avoid allocating on the stack. - int size = 3 * sendbuf_size_; - std::vector<char> buf(size); - - // Try to write the whole thing. - int n; - ASSERT_THAT(n = RetryEINTR(send)(s_, buf.data(), size, 0), SyscallSucceeds()); - - // We should have written something, but not the whole thing. - EXPECT_GT(n, 0); - EXPECT_LT(n, size); -} - -// Same test as above, but calls send instead of write. -TEST_P(TcpSocketTest, BlockingLargeSend_NoRandomSave) { - // Allocate a buffer three times the size of the send buffer. We do this on - // with a vector to avoid allocating on the stack. - int size = 3 * sendbuf_size_; - std::vector<char> writebuf(size); - - // Start reading the response in a loop. - int read_bytes = 0; - ScopedThread t([this, &read_bytes]() { - // Avoid interrupting the blocking write in main thread. - const DisableSave ds; - - // Take ownership of the FD so that we close it on failure. This will - // unblock the blocking write below. - FileDescriptor fd(t_); - t_ = -1; - - char readbuf[2500] = {}; - int n = -1; - while (n != 0) { - ASSERT_THAT(n = RetryEINTR(read)(fd.get(), &readbuf, sizeof(readbuf)), - SyscallSucceeds()); - read_bytes += n; - } - }); - - // Try to send the whole thing. - int n; - ASSERT_THAT(n = SendFd(s_, writebuf.data(), size, 0), SyscallSucceeds()); - - // We should have written the whole thing. - EXPECT_EQ(n, size); - EXPECT_THAT(close(s_), SyscallSucceedsWithValue(0)); - s_ = -1; - t.Join(); - - // We should have read the whole thing. - EXPECT_EQ(read_bytes, size); -} - -// Test that polling on a socket with a full send buffer will block. -TEST_P(TcpSocketTest, PollWithFullBufferBlocks) { - // Set the FD to O_NONBLOCK. - int opts; - ASSERT_THAT(opts = fcntl(s_, F_GETFL), SyscallSucceeds()); - opts |= O_NONBLOCK; - ASSERT_THAT(fcntl(s_, F_SETFL, opts), SyscallSucceeds()); - - // Set TCP_NODELAY, which will cause linux to fill the receive buffer from the - // send buffer as quickly as possibly. This way we can fill up both buffers - // faster. - constexpr int tcp_nodelay_flag = 1; - ASSERT_THAT(setsockopt(s_, IPPROTO_TCP, TCP_NODELAY, &tcp_nodelay_flag, - sizeof(tcp_nodelay_flag)), - SyscallSucceeds()); - - // Set a 256KB send/receive buffer. - int buf_sz = 1 << 18; - EXPECT_THAT(setsockopt(t_, SOL_SOCKET, SO_RCVBUF, &buf_sz, sizeof(buf_sz)), - SyscallSucceedsWithValue(0)); - EXPECT_THAT(setsockopt(s_, SOL_SOCKET, SO_SNDBUF, &buf_sz, sizeof(buf_sz)), - SyscallSucceedsWithValue(0)); - - // Create a large buffer that will be used for sending. - std::vector<char> buf(1 << 16); - - // Write until we receive an error. - while (RetryEINTR(send)(s_, buf.data(), buf.size(), 0) != -1) { - // Sleep to give linux a chance to move data from the send buffer to the - // receive buffer. - usleep(10000); // 10ms. - } - // The last error should have been EWOULDBLOCK. - ASSERT_EQ(errno, EWOULDBLOCK); - - // Now polling on the FD with a timeout should return 0 corresponding to no - // FDs ready. - struct pollfd poll_fd = {s_, POLLOUT, 0}; - EXPECT_THAT(RetryEINTR(poll)(&poll_fd, 1, 10), SyscallSucceedsWithValue(0)); -} - -TEST_P(TcpSocketTest, MsgTrunc) { - char sent_data[512]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - ASSERT_THAT(RetryEINTR(send)(s_, sent_data, sizeof(sent_data), 0), - SyscallSucceedsWithValue(sizeof(sent_data))); - char received_data[sizeof(sent_data)] = {}; - ASSERT_THAT( - RetryEINTR(recv)(t_, received_data, sizeof(received_data) / 2, MSG_TRUNC), - SyscallSucceedsWithValue(sizeof(sent_data) / 2)); - - // Check that we didn't get anything. - char zeros[sizeof(received_data)] = {}; - EXPECT_EQ(0, memcmp(zeros, received_data, sizeof(received_data))); -} - -// MSG_CTRUNC is a return flag but linux allows it to be set on input flags -// without returning an error. -TEST_P(TcpSocketTest, MsgTruncWithCtrunc) { - char sent_data[512]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - ASSERT_THAT(RetryEINTR(send)(s_, sent_data, sizeof(sent_data), 0), - SyscallSucceedsWithValue(sizeof(sent_data))); - char received_data[sizeof(sent_data)] = {}; - ASSERT_THAT(RetryEINTR(recv)(t_, received_data, sizeof(received_data) / 2, - MSG_TRUNC | MSG_CTRUNC), - SyscallSucceedsWithValue(sizeof(sent_data) / 2)); - - // Check that we didn't get anything. - char zeros[sizeof(received_data)] = {}; - EXPECT_EQ(0, memcmp(zeros, received_data, sizeof(received_data))); -} - -// This test will verify that MSG_CTRUNC doesn't do anything when specified -// on input. -TEST_P(TcpSocketTest, MsgTruncWithCtruncOnly) { - char sent_data[512]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - ASSERT_THAT(RetryEINTR(send)(s_, sent_data, sizeof(sent_data), 0), - SyscallSucceedsWithValue(sizeof(sent_data))); - char received_data[sizeof(sent_data)] = {}; - ASSERT_THAT(RetryEINTR(recv)(t_, received_data, sizeof(received_data) / 2, - MSG_CTRUNC), - SyscallSucceedsWithValue(sizeof(sent_data) / 2)); - - // Since MSG_CTRUNC here had no affect, it should not behave like MSG_TRUNC. - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data) / 2)); -} - -TEST_P(TcpSocketTest, MsgTruncLargeSize) { - char sent_data[512]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - ASSERT_THAT(RetryEINTR(send)(s_, sent_data, sizeof(sent_data), 0), - SyscallSucceedsWithValue(sizeof(sent_data))); - char received_data[sizeof(sent_data) * 2] = {}; - ASSERT_THAT( - RetryEINTR(recv)(t_, received_data, sizeof(received_data), MSG_TRUNC), - SyscallSucceedsWithValue(sizeof(sent_data))); - - // Check that we didn't get anything. - char zeros[sizeof(received_data)] = {}; - EXPECT_EQ(0, memcmp(zeros, received_data, sizeof(received_data))); -} - -TEST_P(TcpSocketTest, MsgTruncPeek) { - char sent_data[512]; - RandomizeBuffer(sent_data, sizeof(sent_data)); - ASSERT_THAT(RetryEINTR(send)(s_, sent_data, sizeof(sent_data), 0), - SyscallSucceedsWithValue(sizeof(sent_data))); - char received_data[sizeof(sent_data)] = {}; - ASSERT_THAT(RetryEINTR(recv)(t_, received_data, sizeof(received_data) / 2, - MSG_TRUNC | MSG_PEEK), - SyscallSucceedsWithValue(sizeof(sent_data) / 2)); - - // Check that we didn't get anything. - char zeros[sizeof(received_data)] = {}; - EXPECT_EQ(0, memcmp(zeros, received_data, sizeof(received_data))); - - // Check that we can still get all of the data. - ASSERT_THAT(RetryEINTR(recv)(t_, received_data, sizeof(received_data), 0), - SyscallSucceedsWithValue(sizeof(sent_data))); - EXPECT_EQ(0, memcmp(sent_data, received_data, sizeof(sent_data))); -} - -TEST_P(TcpSocketTest, NoDelayDefault) { - int get = -1; - socklen_t get_len = sizeof(get); - EXPECT_THAT(getsockopt(s_, IPPROTO_TCP, TCP_NODELAY, &get, &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kSockOptOff); -} - -TEST_P(TcpSocketTest, SetNoDelay) { - ASSERT_THAT( - setsockopt(s_, IPPROTO_TCP, TCP_NODELAY, &kSockOptOn, sizeof(kSockOptOn)), - SyscallSucceeds()); - - int get = -1; - socklen_t get_len = sizeof(get); - EXPECT_THAT(getsockopt(s_, IPPROTO_TCP, TCP_NODELAY, &get, &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kSockOptOn); - - ASSERT_THAT(setsockopt(s_, IPPROTO_TCP, TCP_NODELAY, &kSockOptOff, - sizeof(kSockOptOff)), - SyscallSucceeds()); - - EXPECT_THAT(getsockopt(s_, IPPROTO_TCP, TCP_NODELAY, &get, &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kSockOptOff); -} - -#ifndef TCP_INQ -#define TCP_INQ 36 -#endif - -TEST_P(TcpSocketTest, TcpInqSetSockOpt) { - char buf[1024]; - ASSERT_THAT(RetryEINTR(write)(s_, buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - - // TCP_INQ is disabled by default. - int val = -1; - socklen_t slen = sizeof(val); - EXPECT_THAT(getsockopt(t_, SOL_TCP, TCP_INQ, &val, &slen), - SyscallSucceedsWithValue(0)); - ASSERT_EQ(val, 0); - - // Try to set TCP_INQ. - val = 1; - EXPECT_THAT(setsockopt(t_, SOL_TCP, TCP_INQ, &val, sizeof(val)), - SyscallSucceedsWithValue(0)); - val = -1; - slen = sizeof(val); - EXPECT_THAT(getsockopt(t_, SOL_TCP, TCP_INQ, &val, &slen), - SyscallSucceedsWithValue(0)); - ASSERT_EQ(val, 1); - - // Try to unset TCP_INQ. - val = 0; - EXPECT_THAT(setsockopt(t_, SOL_TCP, TCP_INQ, &val, sizeof(val)), - SyscallSucceedsWithValue(0)); - val = -1; - slen = sizeof(val); - EXPECT_THAT(getsockopt(t_, SOL_TCP, TCP_INQ, &val, &slen), - SyscallSucceedsWithValue(0)); - ASSERT_EQ(val, 0); -} - -TEST_P(TcpSocketTest, TcpInq) { - char buf[1024]; - // Write more than one TCP segment. - int size = sizeof(buf); - int kChunk = sizeof(buf) / 4; - for (int i = 0; i < size; i += kChunk) { - ASSERT_THAT(RetryEINTR(write)(s_, buf, kChunk), - SyscallSucceedsWithValue(kChunk)); - } - - int val = 1; - kChunk = sizeof(buf) / 2; - EXPECT_THAT(setsockopt(t_, SOL_TCP, TCP_INQ, &val, sizeof(val)), - SyscallSucceedsWithValue(0)); - - // Wait when all data will be in the received queue. - while (true) { - ASSERT_THAT(ioctl(t_, TIOCINQ, &size), SyscallSucceeds()); - if (size == sizeof(buf)) { - break; - } - absl::SleepFor(absl::Milliseconds(10)); - } - - struct msghdr msg = {}; - std::vector<char> control(CMSG_SPACE(sizeof(int))); - size = sizeof(buf); - struct iovec iov; - for (int i = 0; size != 0; i += kChunk) { - msg.msg_control = &control[0]; - msg.msg_controllen = control.size(); - - iov.iov_base = buf; - iov.iov_len = kChunk; - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - ASSERT_THAT(RetryEINTR(recvmsg)(t_, &msg, 0), - SyscallSucceedsWithValue(kChunk)); - size -= kChunk; - - struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg); - ASSERT_NE(cmsg, nullptr); - ASSERT_EQ(cmsg->cmsg_len, CMSG_LEN(sizeof(int))); - ASSERT_EQ(cmsg->cmsg_level, SOL_TCP); - ASSERT_EQ(cmsg->cmsg_type, TCP_INQ); - - int inq = 0; - memcpy(&inq, CMSG_DATA(cmsg), sizeof(int)); - ASSERT_EQ(inq, size); - } -} - -TEST_P(TcpSocketTest, Tiocinq) { - char buf[1024]; - size_t size = sizeof(buf); - ASSERT_THAT(RetryEINTR(write)(s_, buf, size), SyscallSucceedsWithValue(size)); - - uint32_t seed = time(nullptr); - const size_t max_chunk = size / 10; - while (size > 0) { - size_t chunk = (rand_r(&seed) % max_chunk) + 1; - ssize_t read = RetryEINTR(recvfrom)(t_, buf, chunk, 0, nullptr, nullptr); - ASSERT_THAT(read, SyscallSucceeds()); - size -= read; - - int inq = 0; - ASSERT_THAT(ioctl(t_, TIOCINQ, &inq), SyscallSucceeds()); - ASSERT_EQ(inq, size); - } -} - -TEST_P(TcpSocketTest, TcpSCMPriority) { - char buf[1024]; - ASSERT_THAT(RetryEINTR(write)(s_, buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - - int val = 1; - EXPECT_THAT(setsockopt(t_, SOL_TCP, TCP_INQ, &val, sizeof(val)), - SyscallSucceedsWithValue(0)); - EXPECT_THAT(setsockopt(t_, SOL_SOCKET, SO_TIMESTAMP, &val, sizeof(val)), - SyscallSucceedsWithValue(0)); - - struct msghdr msg = {}; - std::vector<char> control( - CMSG_SPACE(sizeof(struct timeval) + CMSG_SPACE(sizeof(int)))); - struct iovec iov; - msg.msg_control = &control[0]; - msg.msg_controllen = control.size(); - - iov.iov_base = buf; - iov.iov_len = sizeof(buf); - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - ASSERT_THAT(RetryEINTR(recvmsg)(t_, &msg, 0), - SyscallSucceedsWithValue(sizeof(buf))); - - struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg); - ASSERT_NE(cmsg, nullptr); - // TODO(b/78348848): SO_TIMESTAMP isn't implemented for TCP sockets. - if (!IsRunningOnGvisor() || cmsg->cmsg_level == SOL_SOCKET) { - ASSERT_EQ(cmsg->cmsg_level, SOL_SOCKET); - ASSERT_EQ(cmsg->cmsg_type, SO_TIMESTAMP); - ASSERT_EQ(cmsg->cmsg_len, CMSG_LEN(sizeof(struct timeval))); - - cmsg = CMSG_NXTHDR(&msg, cmsg); - ASSERT_NE(cmsg, nullptr); - } - ASSERT_EQ(cmsg->cmsg_len, CMSG_LEN(sizeof(int))); - ASSERT_EQ(cmsg->cmsg_level, SOL_TCP); - ASSERT_EQ(cmsg->cmsg_type, TCP_INQ); - - int inq = 0; - memcpy(&inq, CMSG_DATA(cmsg), sizeof(int)); - ASSERT_EQ(inq, 0); - - cmsg = CMSG_NXTHDR(&msg, cmsg); - ASSERT_EQ(cmsg, nullptr); -} - -INSTANTIATE_TEST_SUITE_P(AllInetTests, TcpSocketTest, - ::testing::Values(AF_INET, AF_INET6)); - -// Fixture for tests parameterized by address family that don't want the fixture -// to do things. -using SimpleTcpSocketTest = ::testing::TestWithParam<int>; - -TEST_P(SimpleTcpSocketTest, SendUnconnected) { - int fd; - ASSERT_THAT(fd = socket(GetParam(), SOCK_STREAM, IPPROTO_TCP), - SyscallSucceeds()); - FileDescriptor sock_fd(fd); - - char data = '\0'; - EXPECT_THAT(RetryEINTR(send)(fd, &data, sizeof(data), 0), - SyscallFailsWithErrno(EPIPE)); -} - -TEST_P(SimpleTcpSocketTest, SendtoWithoutAddressUnconnected) { - int fd; - ASSERT_THAT(fd = socket(GetParam(), SOCK_STREAM, IPPROTO_TCP), - SyscallSucceeds()); - FileDescriptor sock_fd(fd); - - char data = '\0'; - EXPECT_THAT(RetryEINTR(sendto)(fd, &data, sizeof(data), 0, nullptr, 0), - SyscallFailsWithErrno(EPIPE)); -} - -TEST_P(SimpleTcpSocketTest, SendtoWithAddressUnconnected) { - int fd; - ASSERT_THAT(fd = socket(GetParam(), SOCK_STREAM, IPPROTO_TCP), - SyscallSucceeds()); - FileDescriptor sock_fd(fd); - - sockaddr_storage addr = - ASSERT_NO_ERRNO_AND_VALUE(InetLoopbackAddr(GetParam())); - char data = '\0'; - EXPECT_THAT( - RetryEINTR(sendto)(fd, &data, sizeof(data), 0, - reinterpret_cast<sockaddr*>(&addr), sizeof(addr)), - SyscallFailsWithErrno(EPIPE)); -} - -TEST_P(SimpleTcpSocketTest, GetPeerNameUnconnected) { - int fd; - ASSERT_THAT(fd = socket(GetParam(), SOCK_STREAM, IPPROTO_TCP), - SyscallSucceeds()); - FileDescriptor sock_fd(fd); - - sockaddr_storage addr; - socklen_t addrlen = sizeof(addr); - EXPECT_THAT(getpeername(fd, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallFailsWithErrno(ENOTCONN)); -} - -TEST_P(TcpSocketTest, FullBuffer) { - // Set both FDs to be blocking. - int flags = 0; - ASSERT_THAT(flags = fcntl(s_, F_GETFL), SyscallSucceeds()); - EXPECT_THAT(fcntl(s_, F_SETFL, flags & ~O_NONBLOCK), SyscallSucceeds()); - flags = 0; - ASSERT_THAT(flags = fcntl(t_, F_GETFL), SyscallSucceeds()); - EXPECT_THAT(fcntl(t_, F_SETFL, flags & ~O_NONBLOCK), SyscallSucceeds()); - - // 2500 was chosen as a small value that can be set on Linux. - int set_snd = 2500; - EXPECT_THAT(setsockopt(s_, SOL_SOCKET, SO_SNDBUF, &set_snd, sizeof(set_snd)), - SyscallSucceedsWithValue(0)); - int get_snd = -1; - socklen_t get_snd_len = sizeof(get_snd); - EXPECT_THAT(getsockopt(s_, SOL_SOCKET, SO_SNDBUF, &get_snd, &get_snd_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_snd_len, sizeof(get_snd)); - EXPECT_GT(get_snd, 0); - - // 2500 was chosen as a small value that can be set on Linux and gVisor. - int set_rcv = 2500; - EXPECT_THAT(setsockopt(t_, SOL_SOCKET, SO_RCVBUF, &set_rcv, sizeof(set_rcv)), - SyscallSucceedsWithValue(0)); - int get_rcv = -1; - socklen_t get_rcv_len = sizeof(get_rcv); - EXPECT_THAT(getsockopt(t_, SOL_SOCKET, SO_RCVBUF, &get_rcv, &get_rcv_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_rcv_len, sizeof(get_rcv)); - EXPECT_GE(get_rcv, 2500); - - // Quick sanity test. - EXPECT_LT(get_snd + get_rcv, 2500 * IOV_MAX); - - char data[2500] = {}; - std::vector<struct iovec> iovecs; - for (int i = 0; i < IOV_MAX; i++) { - struct iovec iov = {}; - iov.iov_base = data; - iov.iov_len = sizeof(data); - iovecs.push_back(iov); - } - ScopedThread t([this, &iovecs]() { - int result = -1; - EXPECT_THAT(result = RetryEINTR(writev)(s_, iovecs.data(), iovecs.size()), - SyscallSucceeds()); - EXPECT_GT(result, 1); - EXPECT_LT(result, sizeof(data) * iovecs.size()); - }); - - char recv = 0; - EXPECT_THAT(RetryEINTR(read)(t_, &recv, 1), SyscallSucceedsWithValue(1)); - EXPECT_THAT(close(t_), SyscallSucceedsWithValue(0)); - t_ = -1; -} - -TEST_P(TcpSocketTest, PollAfterShutdown) { - ScopedThread client_thread([this]() { - EXPECT_THAT(shutdown(s_, SHUT_WR), SyscallSucceedsWithValue(0)); - struct pollfd poll_fd = {s_, POLLIN | POLLERR | POLLHUP, 0}; - EXPECT_THAT(RetryEINTR(poll)(&poll_fd, 1, 10000), - SyscallSucceedsWithValue(1)); - }); - - EXPECT_THAT(shutdown(t_, SHUT_WR), SyscallSucceedsWithValue(0)); - struct pollfd poll_fd = {t_, POLLIN | POLLERR | POLLHUP, 0}; - EXPECT_THAT(RetryEINTR(poll)(&poll_fd, 1, 10000), - SyscallSucceedsWithValue(1)); -} - -TEST_P(SimpleTcpSocketTest, NonBlockingConnectNoListener) { - // Initialize address to the loopback one. - sockaddr_storage addr = - ASSERT_NO_ERRNO_AND_VALUE(InetLoopbackAddr(GetParam())); - socklen_t addrlen = sizeof(addr); - - const FileDescriptor s = - ASSERT_NO_ERRNO_AND_VALUE(Socket(GetParam(), SOCK_STREAM, IPPROTO_TCP)); - - // Set the FD to O_NONBLOCK. - int opts; - ASSERT_THAT(opts = fcntl(s.get(), F_GETFL), SyscallSucceeds()); - opts |= O_NONBLOCK; - ASSERT_THAT(fcntl(s.get(), F_SETFL, opts), SyscallSucceeds()); - - ASSERT_THAT(RetryEINTR(connect)( - s.get(), reinterpret_cast<struct sockaddr*>(&addr), addrlen), - SyscallFailsWithErrno(EINPROGRESS)); - - // Now polling on the FD with a timeout should return 0 corresponding to no - // FDs ready. - struct pollfd poll_fd = {s.get(), POLLOUT, 0}; - EXPECT_THAT(RetryEINTR(poll)(&poll_fd, 1, 10000), - SyscallSucceedsWithValue(1)); - - int err; - socklen_t optlen = sizeof(err); - ASSERT_THAT(getsockopt(s.get(), SOL_SOCKET, SO_ERROR, &err, &optlen), - SyscallSucceeds()); - - EXPECT_EQ(err, ECONNREFUSED); -} - -TEST_P(SimpleTcpSocketTest, NonBlockingConnect) { - const FileDescriptor listener = - ASSERT_NO_ERRNO_AND_VALUE(Socket(GetParam(), SOCK_STREAM, IPPROTO_TCP)); - - // Initialize address to the loopback one. - sockaddr_storage addr = - ASSERT_NO_ERRNO_AND_VALUE(InetLoopbackAddr(GetParam())); - socklen_t addrlen = sizeof(addr); - - // Bind to some port then start listening. - ASSERT_THAT( - bind(listener.get(), reinterpret_cast<struct sockaddr*>(&addr), addrlen), - SyscallSucceeds()); - - ASSERT_THAT(listen(listener.get(), SOMAXCONN), SyscallSucceeds()); - - FileDescriptor s = - ASSERT_NO_ERRNO_AND_VALUE(Socket(GetParam(), SOCK_STREAM, IPPROTO_TCP)); - - // Set the FD to O_NONBLOCK. - int opts; - ASSERT_THAT(opts = fcntl(s.get(), F_GETFL), SyscallSucceeds()); - opts |= O_NONBLOCK; - ASSERT_THAT(fcntl(s.get(), F_SETFL, opts), SyscallSucceeds()); - - ASSERT_THAT(getsockname(listener.get(), - reinterpret_cast<struct sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - - ASSERT_THAT(RetryEINTR(connect)( - s.get(), reinterpret_cast<struct sockaddr*>(&addr), addrlen), - SyscallFailsWithErrno(EINPROGRESS)); - - int t; - ASSERT_THAT(t = RetryEINTR(accept)(listener.get(), nullptr, nullptr), - SyscallSucceeds()); - - // Now polling on the FD with a timeout should return 0 corresponding to no - // FDs ready. - struct pollfd poll_fd = {s.get(), POLLOUT, 0}; - EXPECT_THAT(RetryEINTR(poll)(&poll_fd, 1, 10000), - SyscallSucceedsWithValue(1)); - - int err; - socklen_t optlen = sizeof(err); - ASSERT_THAT(getsockopt(s.get(), SOL_SOCKET, SO_ERROR, &err, &optlen), - SyscallSucceeds()); - - EXPECT_EQ(err, 0); - - EXPECT_THAT(close(t), SyscallSucceeds()); -} - -TEST_P(SimpleTcpSocketTest, NonBlockingConnectRemoteClose) { - const FileDescriptor listener = - ASSERT_NO_ERRNO_AND_VALUE(Socket(GetParam(), SOCK_STREAM, IPPROTO_TCP)); - - // Initialize address to the loopback one. - sockaddr_storage addr = - ASSERT_NO_ERRNO_AND_VALUE(InetLoopbackAddr(GetParam())); - socklen_t addrlen = sizeof(addr); - - // Bind to some port then start listening. - ASSERT_THAT( - bind(listener.get(), reinterpret_cast<struct sockaddr*>(&addr), addrlen), - SyscallSucceeds()); - - ASSERT_THAT(listen(listener.get(), SOMAXCONN), SyscallSucceeds()); - - FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE( - Socket(GetParam(), SOCK_STREAM | SOCK_NONBLOCK, IPPROTO_TCP)); - - ASSERT_THAT(getsockname(listener.get(), - reinterpret_cast<struct sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - - ASSERT_THAT(RetryEINTR(connect)( - s.get(), reinterpret_cast<struct sockaddr*>(&addr), addrlen), - SyscallFailsWithErrno(EINPROGRESS)); - - int t; - ASSERT_THAT(t = RetryEINTR(accept)(listener.get(), nullptr, nullptr), - SyscallSucceeds()); - - EXPECT_THAT(close(t), SyscallSucceeds()); - - // Now polling on the FD with a timeout should return 0 corresponding to no - // FDs ready. - struct pollfd poll_fd = {s.get(), POLLOUT, 0}; - EXPECT_THAT(RetryEINTR(poll)(&poll_fd, 1, 10000), - SyscallSucceedsWithValue(1)); - - ASSERT_THAT(RetryEINTR(connect)( - s.get(), reinterpret_cast<struct sockaddr*>(&addr), addrlen), - SyscallSucceeds()); - - ASSERT_THAT(RetryEINTR(connect)( - s.get(), reinterpret_cast<struct sockaddr*>(&addr), addrlen), - SyscallFailsWithErrno(EISCONN)); -} - -// Test that we get an ECONNREFUSED with a blocking socket when no one is -// listening on the other end. -TEST_P(SimpleTcpSocketTest, BlockingConnectRefused) { - FileDescriptor s = - ASSERT_NO_ERRNO_AND_VALUE(Socket(GetParam(), SOCK_STREAM, IPPROTO_TCP)); - - // Initialize address to the loopback one. - sockaddr_storage addr = - ASSERT_NO_ERRNO_AND_VALUE(InetLoopbackAddr(GetParam())); - socklen_t addrlen = sizeof(addr); - - ASSERT_THAT(RetryEINTR(connect)( - s.get(), reinterpret_cast<struct sockaddr*>(&addr), addrlen), - SyscallFailsWithErrno(ECONNREFUSED)); - - // Avoiding triggering save in destructor of s. - EXPECT_THAT(close(s.release()), SyscallSucceeds()); -} - -// Test that connecting to a non-listening port and thus receiving a RST is -// handled appropriately by the socket - the port that the socket was bound to -// is released and the expected error is returned. -TEST_P(SimpleTcpSocketTest, CleanupOnConnectionRefused) { - // Create a socket that is known to not be listening. As is it bound but not - // listening, when another socket connects to the port, it will refuse.. - FileDescriptor bound_s = - ASSERT_NO_ERRNO_AND_VALUE(Socket(GetParam(), SOCK_STREAM, IPPROTO_TCP)); - - sockaddr_storage bound_addr = - ASSERT_NO_ERRNO_AND_VALUE(InetLoopbackAddr(GetParam())); - socklen_t bound_addrlen = sizeof(bound_addr); - - ASSERT_THAT( - bind(bound_s.get(), reinterpret_cast<struct sockaddr*>(&bound_addr), - bound_addrlen), - SyscallSucceeds()); - - // Get the addresses the socket is bound to because the port is chosen by the - // stack. - ASSERT_THAT(getsockname(bound_s.get(), - reinterpret_cast<struct sockaddr*>(&bound_addr), - &bound_addrlen), - SyscallSucceeds()); - - // Create, initialize, and bind the socket that is used to test connecting to - // the non-listening port. - FileDescriptor client_s = - ASSERT_NO_ERRNO_AND_VALUE(Socket(GetParam(), SOCK_STREAM, IPPROTO_TCP)); - // Initialize client address to the loopback one. - sockaddr_storage client_addr = - ASSERT_NO_ERRNO_AND_VALUE(InetLoopbackAddr(GetParam())); - socklen_t client_addrlen = sizeof(client_addr); - - ASSERT_THAT( - bind(client_s.get(), reinterpret_cast<struct sockaddr*>(&client_addr), - client_addrlen), - SyscallSucceeds()); - - ASSERT_THAT(getsockname(client_s.get(), - reinterpret_cast<struct sockaddr*>(&client_addr), - &client_addrlen), - SyscallSucceeds()); - - // Now the test: connect to the bound but not listening socket with the - // client socket. The bound socket should return a RST and cause the client - // socket to return an error and clean itself up immediately. - // The error being ECONNREFUSED diverges with RFC 793, page 37, but does what - // Linux does. - ASSERT_THAT(connect(client_s.get(), - reinterpret_cast<const struct sockaddr*>(&bound_addr), - bound_addrlen), - SyscallFailsWithErrno(ECONNREFUSED)); - - FileDescriptor new_s = - ASSERT_NO_ERRNO_AND_VALUE(Socket(GetParam(), SOCK_STREAM, IPPROTO_TCP)); - - // Test binding to the address from the client socket. This should be okay - // if it was dropped correctly. - ASSERT_THAT( - bind(new_s.get(), reinterpret_cast<struct sockaddr*>(&client_addr), - client_addrlen), - SyscallSucceeds()); - - // Attempt #2, with the new socket and reused addr our connect should fail in - // the same way as before, not with an EADDRINUSE. - ASSERT_THAT(connect(client_s.get(), - reinterpret_cast<const struct sockaddr*>(&bound_addr), - bound_addrlen), - SyscallFailsWithErrno(ECONNREFUSED)); -} - -// Test that we get an ECONNREFUSED with a nonblocking socket. -TEST_P(SimpleTcpSocketTest, NonBlockingConnectRefused) { - FileDescriptor s = ASSERT_NO_ERRNO_AND_VALUE( - Socket(GetParam(), SOCK_STREAM | SOCK_NONBLOCK, IPPROTO_TCP)); - - // Initialize address to the loopback one. - sockaddr_storage addr = - ASSERT_NO_ERRNO_AND_VALUE(InetLoopbackAddr(GetParam())); - socklen_t addrlen = sizeof(addr); - - ASSERT_THAT(RetryEINTR(connect)( - s.get(), reinterpret_cast<struct sockaddr*>(&addr), addrlen), - SyscallFailsWithErrno(EINPROGRESS)); - - // We don't need to specify any events to get POLLHUP or POLLERR as these - // are added before the poll. - struct pollfd poll_fd = {s.get(), /*events=*/0, 0}; - EXPECT_THAT(RetryEINTR(poll)(&poll_fd, 1, 1000), SyscallSucceedsWithValue(1)); - - // The ECONNREFUSED should cause us to be woken up with POLLHUP. - EXPECT_NE(poll_fd.revents & (POLLHUP | POLLERR), 0); - - // Avoiding triggering save in destructor of s. - EXPECT_THAT(close(s.release()), SyscallSucceeds()); -} - -// Test that setting a supported congestion control algorithm succeeds for an -// unconnected TCP socket -TEST_P(SimpleTcpSocketTest, SetCongestionControlSucceedsForSupported) { - // This is Linux's net/tcp.h TCP_CA_NAME_MAX. - const int kTcpCaNameMax = 16; - - FileDescriptor s = - ASSERT_NO_ERRNO_AND_VALUE(Socket(GetParam(), SOCK_STREAM, IPPROTO_TCP)); - { - const char kSetCC[kTcpCaNameMax] = "reno"; - ASSERT_THAT(setsockopt(s.get(), IPPROTO_TCP, TCP_CONGESTION, &kSetCC, - strlen(kSetCC)), - SyscallSucceedsWithValue(0)); - - char got_cc[kTcpCaNameMax]; - memset(got_cc, '1', sizeof(got_cc)); - socklen_t optlen = sizeof(got_cc); - ASSERT_THAT( - getsockopt(s.get(), IPPROTO_TCP, TCP_CONGESTION, &got_cc, &optlen), - SyscallSucceedsWithValue(0)); - // We ignore optlen here as the linux kernel sets optlen to the lower of the - // size of the buffer passed in or kTcpCaNameMax and not the length of the - // congestion control algorithm's actual name. - EXPECT_EQ(0, memcmp(got_cc, kSetCC, sizeof(kTcpCaNameMax))); - } - { - const char kSetCC[kTcpCaNameMax] = "cubic"; - ASSERT_THAT(setsockopt(s.get(), IPPROTO_TCP, TCP_CONGESTION, &kSetCC, - strlen(kSetCC)), - SyscallSucceedsWithValue(0)); - - char got_cc[kTcpCaNameMax]; - memset(got_cc, '1', sizeof(got_cc)); - socklen_t optlen = sizeof(got_cc); - ASSERT_THAT( - getsockopt(s.get(), IPPROTO_TCP, TCP_CONGESTION, &got_cc, &optlen), - SyscallSucceedsWithValue(0)); - // We ignore optlen here as the linux kernel sets optlen to the lower of the - // size of the buffer passed in or kTcpCaNameMax and not the length of the - // congestion control algorithm's actual name. - EXPECT_EQ(0, memcmp(got_cc, kSetCC, sizeof(kTcpCaNameMax))); - } -} - -// This test verifies that a getsockopt(...TCP_CONGESTION) behaviour is -// consistent between linux and gvisor when the passed in buffer is smaller than -// kTcpCaNameMax. -TEST_P(SimpleTcpSocketTest, SetGetTCPCongestionShortReadBuffer) { - FileDescriptor s = - ASSERT_NO_ERRNO_AND_VALUE(Socket(GetParam(), SOCK_STREAM, IPPROTO_TCP)); - { - // Verify that getsockopt/setsockopt work with buffers smaller than - // kTcpCaNameMax. - const char kSetCC[] = "cubic"; - ASSERT_THAT(setsockopt(s.get(), IPPROTO_TCP, TCP_CONGESTION, &kSetCC, - strlen(kSetCC)), - SyscallSucceedsWithValue(0)); - - char got_cc[sizeof(kSetCC)]; - socklen_t optlen = sizeof(got_cc); - ASSERT_THAT( - getsockopt(s.get(), IPPROTO_TCP, TCP_CONGESTION, &got_cc, &optlen), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(sizeof(got_cc), optlen); - EXPECT_EQ(0, memcmp(got_cc, kSetCC, sizeof(got_cc))); - } -} - -// This test verifies that a getsockopt(...TCP_CONGESTION) behaviour is -// consistent between linux and gvisor when the passed in buffer is larger than -// kTcpCaNameMax. -TEST_P(SimpleTcpSocketTest, SetGetTCPCongestionLargeReadBuffer) { - // This is Linux's net/tcp.h TCP_CA_NAME_MAX. - const int kTcpCaNameMax = 16; - - FileDescriptor s = - ASSERT_NO_ERRNO_AND_VALUE(Socket(GetParam(), SOCK_STREAM, IPPROTO_TCP)); - { - // Verify that getsockopt works with buffers larger than - // kTcpCaNameMax. - const char kSetCC[] = "cubic"; - ASSERT_THAT(setsockopt(s.get(), IPPROTO_TCP, TCP_CONGESTION, &kSetCC, - strlen(kSetCC)), - SyscallSucceedsWithValue(0)); - - char got_cc[kTcpCaNameMax + 5]; - socklen_t optlen = sizeof(got_cc); - ASSERT_THAT( - getsockopt(s.get(), IPPROTO_TCP, TCP_CONGESTION, &got_cc, &optlen), - SyscallSucceedsWithValue(0)); - // Linux copies the minimum of kTcpCaNameMax or the length of the passed in - // buffer and sets optlen to the number of bytes actually copied - // irrespective of the actual length of the congestion control name. - EXPECT_EQ(kTcpCaNameMax, optlen); - EXPECT_EQ(0, memcmp(got_cc, kSetCC, sizeof(kSetCC))); - } -} - -// Test that setting an unsupported congestion control algorithm fails for an -// unconnected TCP socket. -TEST_P(SimpleTcpSocketTest, SetCongestionControlFailsForUnsupported) { - // This is Linux's net/tcp.h TCP_CA_NAME_MAX. - const int kTcpCaNameMax = 16; - - FileDescriptor s = - ASSERT_NO_ERRNO_AND_VALUE(Socket(GetParam(), SOCK_STREAM, IPPROTO_TCP)); - char old_cc[kTcpCaNameMax]; - socklen_t optlen = sizeof(old_cc); - ASSERT_THAT( - getsockopt(s.get(), IPPROTO_TCP, TCP_CONGESTION, &old_cc, &optlen), - SyscallSucceedsWithValue(0)); - - const char kSetCC[] = "invalid_ca_kSetCC"; - ASSERT_THAT( - setsockopt(s.get(), SOL_TCP, TCP_CONGESTION, &kSetCC, strlen(kSetCC)), - SyscallFailsWithErrno(ENOENT)); - - char got_cc[kTcpCaNameMax]; - ASSERT_THAT( - getsockopt(s.get(), IPPROTO_TCP, TCP_CONGESTION, &got_cc, &optlen), - SyscallSucceedsWithValue(0)); - // We ignore optlen here as the linux kernel sets optlen to the lower of the - // size of the buffer passed in or kTcpCaNameMax and not the length of the - // congestion control algorithm's actual name. - EXPECT_EQ(0, memcmp(got_cc, old_cc, sizeof(kTcpCaNameMax))); -} - -TEST_P(SimpleTcpSocketTest, MaxSegDefault) { - FileDescriptor s = - ASSERT_NO_ERRNO_AND_VALUE(Socket(GetParam(), SOCK_STREAM, IPPROTO_TCP)); - - constexpr int kDefaultMSS = 536; - int tcp_max_seg; - socklen_t optlen = sizeof(tcp_max_seg); - ASSERT_THAT( - getsockopt(s.get(), IPPROTO_TCP, TCP_MAXSEG, &tcp_max_seg, &optlen), - SyscallSucceedsWithValue(0)); - - EXPECT_EQ(kDefaultMSS, tcp_max_seg); - EXPECT_EQ(sizeof(tcp_max_seg), optlen); -} - -TEST_P(SimpleTcpSocketTest, SetMaxSeg) { - FileDescriptor s = - ASSERT_NO_ERRNO_AND_VALUE(Socket(GetParam(), SOCK_STREAM, IPPROTO_TCP)); - - constexpr int kDefaultMSS = 536; - constexpr int kTCPMaxSeg = 1024; - ASSERT_THAT(setsockopt(s.get(), IPPROTO_TCP, TCP_MAXSEG, &kTCPMaxSeg, - sizeof(kTCPMaxSeg)), - SyscallSucceedsWithValue(0)); - - // Linux actually never returns the user_mss value. It will always return the - // default MSS value defined above for an unconnected socket and always return - // the actual current MSS for a connected one. - int optval; - socklen_t optlen = sizeof(optval); - ASSERT_THAT(getsockopt(s.get(), IPPROTO_TCP, TCP_MAXSEG, &optval, &optlen), - SyscallSucceedsWithValue(0)); - - EXPECT_EQ(kDefaultMSS, optval); - EXPECT_EQ(sizeof(optval), optlen); -} - -TEST_P(SimpleTcpSocketTest, SetMaxSegFailsForInvalidMSSValues) { - FileDescriptor s = - ASSERT_NO_ERRNO_AND_VALUE(Socket(GetParam(), SOCK_STREAM, IPPROTO_TCP)); - - { - constexpr int tcp_max_seg = 10; - ASSERT_THAT(setsockopt(s.get(), IPPROTO_TCP, TCP_MAXSEG, &tcp_max_seg, - sizeof(tcp_max_seg)), - SyscallFailsWithErrno(EINVAL)); - } - { - constexpr int tcp_max_seg = 75000; - ASSERT_THAT(setsockopt(s.get(), IPPROTO_TCP, TCP_MAXSEG, &tcp_max_seg, - sizeof(tcp_max_seg)), - SyscallFailsWithErrno(EINVAL)); - } -} - -TEST_P(SimpleTcpSocketTest, SetTCPUserTimeout) { - FileDescriptor s = - ASSERT_NO_ERRNO_AND_VALUE(Socket(GetParam(), SOCK_STREAM, IPPROTO_TCP)); - - { - constexpr int kTCPUserTimeout = -1; - EXPECT_THAT(setsockopt(s.get(), IPPROTO_TCP, TCP_USER_TIMEOUT, - &kTCPUserTimeout, sizeof(kTCPUserTimeout)), - SyscallFailsWithErrno(EINVAL)); - } - - // kTCPUserTimeout is in milliseconds. - constexpr int kTCPUserTimeout = 100; - ASSERT_THAT(setsockopt(s.get(), IPPROTO_TCP, TCP_USER_TIMEOUT, - &kTCPUserTimeout, sizeof(kTCPUserTimeout)), - SyscallSucceedsWithValue(0)); - int get = -1; - socklen_t get_len = sizeof(get); - ASSERT_THAT( - getsockopt(s.get(), IPPROTO_TCP, TCP_USER_TIMEOUT, &get, &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kTCPUserTimeout); -} - -TEST_P(SimpleTcpSocketTest, SetTCPDeferAcceptNeg) { - FileDescriptor s = - ASSERT_NO_ERRNO_AND_VALUE(Socket(GetParam(), SOCK_STREAM, IPPROTO_TCP)); - - // -ve TCP_DEFER_ACCEPT is same as setting it to zero. - constexpr int kNeg = -1; - EXPECT_THAT( - setsockopt(s.get(), IPPROTO_TCP, TCP_DEFER_ACCEPT, &kNeg, sizeof(kNeg)), - SyscallSucceeds()); - int get = -1; - socklen_t get_len = sizeof(get); - ASSERT_THAT( - getsockopt(s.get(), IPPROTO_TCP, TCP_USER_TIMEOUT, &get, &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, 0); -} - -TEST_P(SimpleTcpSocketTest, GetTCPDeferAcceptDefault) { - FileDescriptor s = - ASSERT_NO_ERRNO_AND_VALUE(Socket(GetParam(), SOCK_STREAM, IPPROTO_TCP)); - - int get = -1; - socklen_t get_len = sizeof(get); - ASSERT_THAT( - getsockopt(s.get(), IPPROTO_TCP, TCP_USER_TIMEOUT, &get, &get_len), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, 0); -} - -TEST_P(SimpleTcpSocketTest, SetTCPDeferAcceptGreaterThanZero) { - FileDescriptor s = - ASSERT_NO_ERRNO_AND_VALUE(Socket(GetParam(), SOCK_STREAM, IPPROTO_TCP)); - // kTCPDeferAccept is in seconds. - // NOTE: linux translates seconds to # of retries and back from - // #of retries to seconds. Which means only certain values - // translate back exactly. That's why we use 3 here, a value of - // 5 will result in us getting back 7 instead of 5 in the - // getsockopt. - constexpr int kTCPDeferAccept = 3; - ASSERT_THAT(setsockopt(s.get(), IPPROTO_TCP, TCP_DEFER_ACCEPT, - &kTCPDeferAccept, sizeof(kTCPDeferAccept)), - SyscallSucceeds()); - int get = -1; - socklen_t get_len = sizeof(get); - ASSERT_THAT( - getsockopt(s.get(), IPPROTO_TCP, TCP_DEFER_ACCEPT, &get, &get_len), - SyscallSucceeds()); - EXPECT_EQ(get_len, sizeof(get)); - EXPECT_EQ(get, kTCPDeferAccept); -} - -TEST_P(SimpleTcpSocketTest, RecvOnClosedSocket) { - auto s = - ASSERT_NO_ERRNO_AND_VALUE(Socket(GetParam(), SOCK_STREAM, IPPROTO_TCP)); - char buf[1]; - EXPECT_THAT(recv(s.get(), buf, 0, 0), SyscallFailsWithErrno(ENOTCONN)); - EXPECT_THAT(recv(s.get(), buf, sizeof(buf), 0), - SyscallFailsWithErrno(ENOTCONN)); -} - -INSTANTIATE_TEST_SUITE_P(AllInetTests, SimpleTcpSocketTest, - ::testing::Values(AF_INET, AF_INET6)); - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/temp_umask.h b/test/syscalls/linux/temp_umask.h deleted file mode 100644 index 81a25440c..000000000 --- a/test/syscalls/linux/temp_umask.h +++ /dev/null @@ -1,39 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_SYSCALLS_TEMP_UMASK_H_ -#define GVISOR_TEST_SYSCALLS_TEMP_UMASK_H_ - -#include <sys/stat.h> -#include <sys/types.h> - -namespace gvisor { -namespace testing { - -class TempUmask { - public: - // Sets the process umask to `mask`. - explicit TempUmask(mode_t mask) : old_mask_(umask(mask)) {} - - // Sets the process umask to its previous value. - ~TempUmask() { umask(old_mask_); } - - private: - mode_t old_mask_; -}; - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_SYSCALLS_TEMP_UMASK_H_ diff --git a/test/syscalls/linux/tgkill.cc b/test/syscalls/linux/tgkill.cc deleted file mode 100644 index 80acae5de..000000000 --- a/test/syscalls/linux/tgkill.cc +++ /dev/null @@ -1,48 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <sys/syscall.h> -#include <sys/types.h> -#include <unistd.h> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "test/util/signal_util.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -TEST(TgkillTest, InvalidTID) { - EXPECT_THAT(tgkill(getpid(), -1, 0), SyscallFailsWithErrno(EINVAL)); - EXPECT_THAT(tgkill(getpid(), 0, 0), SyscallFailsWithErrno(EINVAL)); -} - -TEST(TgkillTest, InvalidTGID) { - EXPECT_THAT(tgkill(-1, gettid(), 0), SyscallFailsWithErrno(EINVAL)); - EXPECT_THAT(tgkill(0, gettid(), 0), SyscallFailsWithErrno(EINVAL)); -} - -TEST(TgkillTest, ValidInput) { - EXPECT_THAT(tgkill(getpid(), gettid(), 0), SyscallSucceeds()); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/time.cc b/test/syscalls/linux/time.cc deleted file mode 100644 index 1ccb95733..000000000 --- a/test/syscalls/linux/time.cc +++ /dev/null @@ -1,105 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <time.h> - -#include "gtest/gtest.h" -#include "test/util/proc_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -constexpr long kFudgeSeconds = 5; - -// Mimics the time(2) wrapper from glibc prior to 2.15. -time_t vsyscall_time(time_t* t) { - constexpr uint64_t kVsyscallTimeEntry = 0xffffffffff600400; - return reinterpret_cast<time_t (*)(time_t*)>(kVsyscallTimeEntry)(t); -} - -TEST(TimeTest, VsyscallTime_Succeeds) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(IsVsyscallEnabled())); - - time_t t1, t2; - - { - const DisableSave ds; // Timing assertions. - EXPECT_THAT(time(&t1), SyscallSucceeds()); - EXPECT_THAT(vsyscall_time(&t2), SyscallSucceeds()); - } - - // Time should be monotonic. - EXPECT_LE(static_cast<long>(t1), static_cast<long>(t2)); - - // Check that it's within kFudge seconds. - EXPECT_LE(static_cast<long>(t2), static_cast<long>(t1) + kFudgeSeconds); - - // Redo with save. - EXPECT_THAT(time(&t1), SyscallSucceeds()); - EXPECT_THAT(vsyscall_time(&t2), SyscallSucceeds()); - - // Time should be monotonic. - EXPECT_LE(static_cast<long>(t1), static_cast<long>(t2)); -} - -TEST(TimeTest, VsyscallTime_InvalidAddressSIGSEGV) { - EXPECT_EXIT(vsyscall_time(reinterpret_cast<time_t*>(0x1)), - ::testing::KilledBySignal(SIGSEGV), ""); -} - -// Mimics the gettimeofday(2) wrapper from the Go runtime <= 1.2. -int vsyscall_gettimeofday(struct timeval* tv, struct timezone* tz) { - constexpr uint64_t kVsyscallGettimeofdayEntry = 0xffffffffff600000; - return reinterpret_cast<int (*)(struct timeval*, struct timezone*)>( - kVsyscallGettimeofdayEntry)(tv, tz); -} - -TEST(TimeTest, VsyscallGettimeofday_Succeeds) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(IsVsyscallEnabled())); - - struct timeval tv1, tv2; - struct timezone tz1, tz2; - - { - const DisableSave ds; // Timing assertions. - EXPECT_THAT(gettimeofday(&tv1, &tz1), SyscallSucceeds()); - EXPECT_THAT(vsyscall_gettimeofday(&tv2, &tz2), SyscallSucceeds()); - } - - // See above. - EXPECT_LE(static_cast<long>(tv1.tv_sec), static_cast<long>(tv2.tv_sec)); - EXPECT_LE(static_cast<long>(tv2.tv_sec), - static_cast<long>(tv1.tv_sec) + kFudgeSeconds); - - // Redo with save. - EXPECT_THAT(gettimeofday(&tv1, &tz1), SyscallSucceeds()); - EXPECT_THAT(vsyscall_gettimeofday(&tv2, &tz2), SyscallSucceeds()); -} - -TEST(TimeTest, VsyscallGettimeofday_InvalidAddressSIGSEGV) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(IsVsyscallEnabled())); - - EXPECT_EXIT(vsyscall_gettimeofday(reinterpret_cast<struct timeval*>(0x1), - reinterpret_cast<struct timezone*>(0x1)), - ::testing::KilledBySignal(SIGSEGV), ""); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/timerfd.cc b/test/syscalls/linux/timerfd.cc deleted file mode 100644 index 86ed87b7c..000000000 --- a/test/syscalls/linux/timerfd.cc +++ /dev/null @@ -1,256 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <poll.h> -#include <sys/timerfd.h> -#include <time.h> - -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/util/file_descriptor.h" -#include "test/util/posix_error.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -// Wrapper around timerfd_create(2) that returns a FileDescriptor. -PosixErrorOr<FileDescriptor> TimerfdCreate(int clockid, int flags) { - int fd = timerfd_create(clockid, flags); - MaybeSave(); - if (fd < 0) { - return PosixError(errno, "timerfd_create failed"); - } - return FileDescriptor(fd); -} - -// In tests that race a timerfd with a sleep, some slack is required because: -// -// - Timerfd expirations are asynchronous with respect to nanosleeps. -// -// - Because clock_gettime(CLOCK_MONOTONIC) is implemented through the VDSO, -// it technically uses a closely-related, but distinct, time domain from the -// CLOCK_MONOTONIC used to trigger timerfd expirations. The same applies to -// CLOCK_BOOTTIME which is an alias for CLOCK_MONOTONIC. -absl::Duration TimerSlack() { return absl::Milliseconds(500); } - -class TimerfdTest : public ::testing::TestWithParam<int> {}; - -TEST_P(TimerfdTest, IsInitiallyStopped) { - auto const tfd = ASSERT_NO_ERRNO_AND_VALUE(TimerfdCreate(GetParam(), 0)); - struct itimerspec its = {}; - ASSERT_THAT(timerfd_gettime(tfd.get(), &its), SyscallSucceeds()); - EXPECT_EQ(0, its.it_value.tv_sec); - EXPECT_EQ(0, its.it_value.tv_nsec); -} - -TEST_P(TimerfdTest, SingleShot) { - constexpr absl::Duration kDelay = absl::Seconds(1); - - auto const tfd = ASSERT_NO_ERRNO_AND_VALUE(TimerfdCreate(GetParam(), 0)); - struct itimerspec its = {}; - its.it_value = absl::ToTimespec(kDelay); - ASSERT_THAT(timerfd_settime(tfd.get(), /* flags = */ 0, &its, nullptr), - SyscallSucceeds()); - - // The timer should fire exactly once since the interval is zero. - absl::SleepFor(kDelay + TimerSlack()); - uint64_t val = 0; - ASSERT_THAT(ReadFd(tfd.get(), &val, sizeof(uint64_t)), - SyscallSucceedsWithValue(sizeof(uint64_t))); - EXPECT_EQ(1, val); -} - -TEST_P(TimerfdTest, Periodic) { - constexpr absl::Duration kDelay = absl::Seconds(1); - constexpr int kPeriods = 3; - - auto const tfd = ASSERT_NO_ERRNO_AND_VALUE(TimerfdCreate(GetParam(), 0)); - struct itimerspec its = {}; - its.it_value = absl::ToTimespec(kDelay); - its.it_interval = absl::ToTimespec(kDelay); - ASSERT_THAT(timerfd_settime(tfd.get(), /* flags = */ 0, &its, nullptr), - SyscallSucceeds()); - - // Expect to see at least kPeriods expirations. More may occur due to the - // timer slack, or due to delays from scheduling or save/restore. - absl::SleepFor(kPeriods * kDelay + TimerSlack()); - uint64_t val = 0; - ASSERT_THAT(ReadFd(tfd.get(), &val, sizeof(uint64_t)), - SyscallSucceedsWithValue(sizeof(uint64_t))); - EXPECT_GE(val, kPeriods); -} - -TEST_P(TimerfdTest, BlockingRead) { - constexpr absl::Duration kDelay = absl::Seconds(3); - - auto const tfd = ASSERT_NO_ERRNO_AND_VALUE(TimerfdCreate(GetParam(), 0)); - struct itimerspec its = {}; - its.it_value.tv_sec = absl::ToInt64Seconds(kDelay); - auto const start_time = absl::Now(); - ASSERT_THAT(timerfd_settime(tfd.get(), /* flags = */ 0, &its, nullptr), - SyscallSucceeds()); - - // read should block until the timer fires. - uint64_t val = 0; - ASSERT_THAT(ReadFd(tfd.get(), &val, sizeof(uint64_t)), - SyscallSucceedsWithValue(sizeof(uint64_t))); - auto const end_time = absl::Now(); - EXPECT_EQ(1, val); - EXPECT_GE((end_time - start_time) + TimerSlack(), kDelay); -} - -TEST_P(TimerfdTest, NonblockingRead_NoRandomSave) { - constexpr absl::Duration kDelay = absl::Seconds(5); - - auto const tfd = - ASSERT_NO_ERRNO_AND_VALUE(TimerfdCreate(GetParam(), TFD_NONBLOCK)); - - // Since the timer is initially disabled and has never fired, read should - // return EAGAIN. - uint64_t val = 0; - ASSERT_THAT(ReadFd(tfd.get(), &val, sizeof(uint64_t)), - SyscallFailsWithErrno(EAGAIN)); - - DisableSave ds; // Timing-sensitive. - - // Arm the timer. - struct itimerspec its = {}; - its.it_value.tv_sec = absl::ToInt64Seconds(kDelay); - ASSERT_THAT(timerfd_settime(tfd.get(), /* flags = */ 0, &its, nullptr), - SyscallSucceeds()); - - // Since the timer has not yet fired, read should return EAGAIN. - ASSERT_THAT(ReadFd(tfd.get(), &val, sizeof(uint64_t)), - SyscallFailsWithErrno(EAGAIN)); - - ds.reset(); // No longer timing-sensitive. - - // After the timer fires, read should indicate 1 expiration. - absl::SleepFor(kDelay + TimerSlack()); - ASSERT_THAT(ReadFd(tfd.get(), &val, sizeof(uint64_t)), - SyscallSucceedsWithValue(sizeof(uint64_t))); - EXPECT_EQ(1, val); - - // The successful read should have reset the number of expirations. - ASSERT_THAT(ReadFd(tfd.get(), &val, sizeof(uint64_t)), - SyscallFailsWithErrno(EAGAIN)); -} - -TEST_P(TimerfdTest, BlockingPoll_SetTimeResetsExpirations) { - constexpr absl::Duration kDelay = absl::Seconds(3); - - auto const tfd = - ASSERT_NO_ERRNO_AND_VALUE(TimerfdCreate(GetParam(), TFD_NONBLOCK)); - struct itimerspec its = {}; - its.it_value.tv_sec = absl::ToInt64Seconds(kDelay); - auto const start_time = absl::Now(); - ASSERT_THAT(timerfd_settime(tfd.get(), /* flags = */ 0, &its, nullptr), - SyscallSucceeds()); - - // poll should block until the timer fires. - struct pollfd pfd = {}; - pfd.fd = tfd.get(); - pfd.events = POLLIN; - ASSERT_THAT(poll(&pfd, /* nfds = */ 1, - /* timeout = */ 2 * absl::ToInt64Seconds(kDelay) * 1000), - SyscallSucceedsWithValue(1)); - auto const end_time = absl::Now(); - EXPECT_EQ(POLLIN, pfd.revents); - EXPECT_GE((end_time - start_time) + TimerSlack(), kDelay); - - // Call timerfd_settime again with a value of 0. This should reset the number - // of expirations to 0, causing read to return EAGAIN since the timerfd is - // non-blocking. - its.it_value.tv_sec = 0; - ASSERT_THAT(timerfd_settime(tfd.get(), /* flags = */ 0, &its, nullptr), - SyscallSucceeds()); - uint64_t val = 0; - ASSERT_THAT(ReadFd(tfd.get(), &val, sizeof(uint64_t)), - SyscallFailsWithErrno(EAGAIN)); -} - -TEST_P(TimerfdTest, SetAbsoluteTime) { - constexpr absl::Duration kDelay = absl::Seconds(3); - - // Use a non-blocking timerfd so that if TFD_TIMER_ABSTIME is incorrectly - // non-functional, we get EAGAIN rather than a test timeout. - auto const tfd = - ASSERT_NO_ERRNO_AND_VALUE(TimerfdCreate(GetParam(), TFD_NONBLOCK)); - struct itimerspec its = {}; - ASSERT_THAT(clock_gettime(GetParam(), &its.it_value), SyscallSucceeds()); - its.it_value.tv_sec += absl::ToInt64Seconds(kDelay); - ASSERT_THAT(timerfd_settime(tfd.get(), TFD_TIMER_ABSTIME, &its, nullptr), - SyscallSucceeds()); - - absl::SleepFor(kDelay + TimerSlack()); - uint64_t val = 0; - ASSERT_THAT(ReadFd(tfd.get(), &val, sizeof(uint64_t)), - SyscallSucceedsWithValue(sizeof(uint64_t))); - EXPECT_EQ(1, val); -} - -TEST_P(TimerfdTest, IllegalReadWrite) { - auto const tfd = - ASSERT_NO_ERRNO_AND_VALUE(TimerfdCreate(GetParam(), TFD_NONBLOCK)); - uint64_t val = 0; - EXPECT_THAT(PreadFd(tfd.get(), &val, sizeof(val), 0), - SyscallFailsWithErrno(ESPIPE)); - EXPECT_THAT(WriteFd(tfd.get(), &val, sizeof(val)), - SyscallFailsWithErrno(EINVAL)); - EXPECT_THAT(PwriteFd(tfd.get(), &val, sizeof(val), 0), - SyscallFailsWithErrno(ESPIPE)); -} - -std::string PrintClockId(::testing::TestParamInfo<int> info) { - switch (info.param) { - case CLOCK_MONOTONIC: - return "CLOCK_MONOTONIC"; - case CLOCK_BOOTTIME: - return "CLOCK_BOOTTIME"; - default: - return absl::StrCat(info.param); - } -} - -INSTANTIATE_TEST_SUITE_P(AllTimerTypes, TimerfdTest, - ::testing::Values(CLOCK_MONOTONIC, CLOCK_BOOTTIME), - PrintClockId); - -TEST(TimerfdClockRealtimeTest, ClockRealtime) { - // Since CLOCK_REALTIME can, by definition, change, we can't make any - // non-flaky assertions about the amount of time it takes for a - // CLOCK_REALTIME-based timer to expire. Just check that it expires at all, - // and hope it happens before the test times out. - constexpr int kDelaySecs = 1; - - auto const tfd = ASSERT_NO_ERRNO_AND_VALUE(TimerfdCreate(CLOCK_REALTIME, 0)); - struct itimerspec its = {}; - its.it_value.tv_sec = kDelaySecs; - ASSERT_THAT(timerfd_settime(tfd.get(), /* flags = */ 0, &its, nullptr), - SyscallSucceeds()); - - uint64_t val = 0; - ASSERT_THAT(ReadFd(tfd.get(), &val, sizeof(uint64_t)), - SyscallSucceedsWithValue(sizeof(uint64_t))); - EXPECT_EQ(1, val); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/timers.cc b/test/syscalls/linux/timers.cc deleted file mode 100644 index 2f92c27da..000000000 --- a/test/syscalls/linux/timers.cc +++ /dev/null @@ -1,662 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <signal.h> -#include <sys/resource.h> -#include <sys/time.h> -#include <syscall.h> -#include <time.h> -#include <unistd.h> - -#include <atomic> - -#include "gtest/gtest.h" -#include "absl/flags/flag.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/util/cleanup.h" -#include "test/util/logging.h" -#include "test/util/multiprocess_util.h" -#include "test/util/posix_error.h" -#include "test/util/signal_util.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -ABSL_FLAG(bool, timers_test_sleep, false, - "If true, sleep forever instead of running tests."); - -using ::testing::_; -using ::testing::AnyOf; - -namespace gvisor { -namespace testing { -namespace { - -#ifndef CPUCLOCK_PROF -#define CPUCLOCK_PROF 0 -#endif // CPUCLOCK_PROF - -PosixErrorOr<absl::Duration> ProcessCPUTime(pid_t pid) { - // Use pid-specific CPUCLOCK_PROF, which is the clock used to enforce - // RLIMIT_CPU. - clockid_t clockid = (~static_cast<clockid_t>(pid) << 3) | CPUCLOCK_PROF; - - struct timespec ts; - int ret = clock_gettime(clockid, &ts); - if (ret < 0) { - return PosixError(errno, "clock_gettime failed"); - } - - return absl::DurationFromTimespec(ts); -} - -void NoopSignalHandler(int signo) { - TEST_CHECK_MSG(SIGXCPU == signo, - "NoopSigHandler did not receive expected signal"); -} - -void UninstallingSignalHandler(int signo) { - TEST_CHECK_MSG(SIGXCPU == signo, - "UninstallingSignalHandler did not receive expected signal"); - struct sigaction rev_action; - rev_action.sa_handler = SIG_DFL; - rev_action.sa_flags = 0; - sigemptyset(&rev_action.sa_mask); - sigaction(SIGXCPU, &rev_action, nullptr); -} - -TEST(TimerTest, ProcessKilledOnCPUSoftLimit) { - constexpr absl::Duration kSoftLimit = absl::Seconds(1); - constexpr absl::Duration kHardLimit = absl::Seconds(3); - - struct rlimit cpu_limits; - cpu_limits.rlim_cur = absl::ToInt64Seconds(kSoftLimit); - cpu_limits.rlim_max = absl::ToInt64Seconds(kHardLimit); - - int pid = fork(); - MaybeSave(); - if (pid == 0) { - TEST_PCHECK(setrlimit(RLIMIT_CPU, &cpu_limits) == 0); - MaybeSave(); - for (;;) { - } - } - ASSERT_THAT(pid, SyscallSucceeds()); - auto c = Cleanup([pid] { - int status; - EXPECT_THAT(waitpid(pid, &status, 0), SyscallSucceedsWithValue(pid)); - EXPECT_TRUE(WIFSIGNALED(status)); - EXPECT_EQ(WTERMSIG(status), SIGXCPU); - }); - - // Wait for the child to exit, but do not reap it. This will allow us to check - // its CPU usage while it is zombied. - EXPECT_THAT(waitid(P_PID, pid, nullptr, WEXITED | WNOWAIT), - SyscallSucceeds()); - - // Assert that the child spent 1s of CPU before getting killed. - // - // We must be careful to use CPUCLOCK_PROF, the same clock used for RLIMIT_CPU - // enforcement, to get correct results. Note that this is slightly different - // from rusage-reported CPU usage: - // - // RLIMIT_CPU, CPUCLOCK_PROF use kernel/sched/cputime.c:thread_group_cputime. - // rusage uses kernel/sched/cputime.c:thread_group_cputime_adjusted. - absl::Duration cpu = ASSERT_NO_ERRNO_AND_VALUE(ProcessCPUTime(pid)); - EXPECT_GE(cpu, kSoftLimit); - - // Child did not make it to the hard limit. - // - // Linux sends SIGXCPU synchronously with CPU tick updates. See - // kernel/time/timer.c:update_process_times: - // => account_process_tick // update task CPU usage. - // => run_posix_cpu_timers // enforce RLIMIT_CPU, sending signal. - // - // Thus, only chance for this to flake is if the system time required to - // deliver the signal exceeds 2s. - EXPECT_LT(cpu, kHardLimit); -} - -TEST(TimerTest, ProcessPingedRepeatedlyAfterCPUSoftLimit) { - struct sigaction new_action; - new_action.sa_handler = UninstallingSignalHandler; - new_action.sa_flags = 0; - sigemptyset(&new_action.sa_mask); - - constexpr absl::Duration kSoftLimit = absl::Seconds(1); - constexpr absl::Duration kHardLimit = absl::Seconds(10); - - struct rlimit cpu_limits; - cpu_limits.rlim_cur = absl::ToInt64Seconds(kSoftLimit); - cpu_limits.rlim_max = absl::ToInt64Seconds(kHardLimit); - - int pid = fork(); - MaybeSave(); - if (pid == 0) { - TEST_PCHECK(sigaction(SIGXCPU, &new_action, nullptr) == 0); - MaybeSave(); - TEST_PCHECK(setrlimit(RLIMIT_CPU, &cpu_limits) == 0); - MaybeSave(); - for (;;) { - } - } - ASSERT_THAT(pid, SyscallSucceeds()); - auto c = Cleanup([pid] { - int status; - EXPECT_THAT(waitpid(pid, &status, 0), SyscallSucceedsWithValue(pid)); - EXPECT_TRUE(WIFSIGNALED(status)); - EXPECT_EQ(WTERMSIG(status), SIGXCPU); - }); - - // Wait for the child to exit, but do not reap it. This will allow us to check - // its CPU usage while it is zombied. - EXPECT_THAT(waitid(P_PID, pid, nullptr, WEXITED | WNOWAIT), - SyscallSucceeds()); - - absl::Duration cpu = ASSERT_NO_ERRNO_AND_VALUE(ProcessCPUTime(pid)); - // Following signals come every CPU second. - EXPECT_GE(cpu, kSoftLimit + absl::Seconds(1)); - - // Child did not make it to the hard limit. - // - // As above, should not flake. - EXPECT_LT(cpu, kHardLimit); -} - -TEST(TimerTest, ProcessKilledOnCPUHardLimit) { - struct sigaction new_action; - new_action.sa_handler = NoopSignalHandler; - new_action.sa_flags = 0; - sigemptyset(&new_action.sa_mask); - - constexpr absl::Duration kSoftLimit = absl::Seconds(1); - constexpr absl::Duration kHardLimit = absl::Seconds(3); - - struct rlimit cpu_limits; - cpu_limits.rlim_cur = absl::ToInt64Seconds(kSoftLimit); - cpu_limits.rlim_max = absl::ToInt64Seconds(kHardLimit); - - int pid = fork(); - MaybeSave(); - if (pid == 0) { - TEST_PCHECK(sigaction(SIGXCPU, &new_action, nullptr) == 0); - MaybeSave(); - TEST_PCHECK(setrlimit(RLIMIT_CPU, &cpu_limits) == 0); - MaybeSave(); - for (;;) { - } - } - ASSERT_THAT(pid, SyscallSucceeds()); - auto c = Cleanup([pid] { - int status; - EXPECT_THAT(waitpid(pid, &status, 0), SyscallSucceedsWithValue(pid)); - EXPECT_TRUE(WIFSIGNALED(status)); - EXPECT_EQ(WTERMSIG(status), SIGKILL); - }); - - // Wait for the child to exit, but do not reap it. This will allow us to check - // its CPU usage while it is zombied. - EXPECT_THAT(waitid(P_PID, pid, nullptr, WEXITED | WNOWAIT), - SyscallSucceeds()); - - absl::Duration cpu = ASSERT_NO_ERRNO_AND_VALUE(ProcessCPUTime(pid)); - EXPECT_GE(cpu, kHardLimit); -} - -// RAII type for a kernel "POSIX" interval timer. (The kernel provides system -// calls such as timer_create that behave very similarly, but not identically, -// to those described by timer_create(2); in particular, the kernel does not -// implement SIGEV_THREAD. glibc builds POSIX-compliant interval timers based on -// these kernel interval timers.) -// -// Compare implementation to FileDescriptor. -class IntervalTimer { - public: - IntervalTimer() = default; - - explicit IntervalTimer(int id) { set_id(id); } - - IntervalTimer(IntervalTimer&& orig) : id_(orig.release()) {} - - IntervalTimer& operator=(IntervalTimer&& orig) { - if (this == &orig) return *this; - reset(orig.release()); - return *this; - } - - IntervalTimer(const IntervalTimer& other) = delete; - IntervalTimer& operator=(const IntervalTimer& other) = delete; - - ~IntervalTimer() { reset(); } - - int get() const { return id_; } - - int release() { - int const id = id_; - id_ = -1; - return id; - } - - void reset() { reset(-1); } - - void reset(int id) { - if (id_ >= 0) { - TEST_PCHECK(syscall(SYS_timer_delete, id_) == 0); - MaybeSave(); - } - set_id(id); - } - - PosixErrorOr<struct itimerspec> Set( - int flags, const struct itimerspec& new_value) const { - struct itimerspec old_value = {}; - if (syscall(SYS_timer_settime, id_, flags, &new_value, &old_value) < 0) { - return PosixError(errno, "timer_settime"); - } - MaybeSave(); - return old_value; - } - - PosixErrorOr<struct itimerspec> Get() const { - struct itimerspec curr_value = {}; - if (syscall(SYS_timer_gettime, id_, &curr_value) < 0) { - return PosixError(errno, "timer_gettime"); - } - MaybeSave(); - return curr_value; - } - - PosixErrorOr<int> Overruns() const { - int rv = syscall(SYS_timer_getoverrun, id_); - if (rv < 0) { - return PosixError(errno, "timer_getoverrun"); - } - MaybeSave(); - return rv; - } - - private: - void set_id(int id) { id_ = std::max(id, -1); } - - // Kernel timer_t is int; glibc timer_t is void*. - int id_ = -1; -}; - -PosixErrorOr<IntervalTimer> TimerCreate(clockid_t clockid, - const struct sigevent& sev) { - int timerid; - int ret = syscall(SYS_timer_create, clockid, &sev, &timerid); - if (ret < 0) { - return PosixError(errno, "timer_create"); - } - if (ret > 0) { - return PosixError(EINVAL, "timer_create should never return positive"); - } - MaybeSave(); - return IntervalTimer(timerid); -} - -// See timerfd.cc:TimerSlack() for rationale. -constexpr absl::Duration kTimerSlack = absl::Milliseconds(500); - -TEST(IntervalTimerTest, IsInitiallyStopped) { - struct sigevent sev = {}; - sev.sigev_notify = SIGEV_NONE; - const auto timer = - ASSERT_NO_ERRNO_AND_VALUE(TimerCreate(CLOCK_MONOTONIC, sev)); - const struct itimerspec its = ASSERT_NO_ERRNO_AND_VALUE(timer.Get()); - EXPECT_EQ(0, its.it_value.tv_sec); - EXPECT_EQ(0, its.it_value.tv_nsec); -} - -// Kernel can create multiple timers without issue. -// -// Regression test for gvisor.dev/issue/1738. -TEST(IntervalTimerTest, MultipleTimers) { - struct sigevent sev = {}; - sev.sigev_notify = SIGEV_NONE; - const auto timer1 = - ASSERT_NO_ERRNO_AND_VALUE(TimerCreate(CLOCK_MONOTONIC, sev)); - const auto timer2 = - ASSERT_NO_ERRNO_AND_VALUE(TimerCreate(CLOCK_MONOTONIC, sev)); -} - -TEST(IntervalTimerTest, SingleShotSilent) { - struct sigevent sev = {}; - sev.sigev_notify = SIGEV_NONE; - const auto timer = - ASSERT_NO_ERRNO_AND_VALUE(TimerCreate(CLOCK_MONOTONIC, sev)); - - constexpr absl::Duration kDelay = absl::Seconds(1); - struct itimerspec its = {}; - its.it_value = absl::ToTimespec(kDelay); - ASSERT_NO_ERRNO(timer.Set(0, its)); - - // The timer should count down to 0 and stop since the interval is zero. No - // overruns should be counted. - absl::SleepFor(kDelay + kTimerSlack); - its = ASSERT_NO_ERRNO_AND_VALUE(timer.Get()); - EXPECT_EQ(0, its.it_value.tv_sec); - EXPECT_EQ(0, its.it_value.tv_nsec); - EXPECT_THAT(timer.Overruns(), IsPosixErrorOkAndHolds(0)); -} - -TEST(IntervalTimerTest, PeriodicSilent) { - struct sigevent sev = {}; - sev.sigev_notify = SIGEV_NONE; - const auto timer = - ASSERT_NO_ERRNO_AND_VALUE(TimerCreate(CLOCK_MONOTONIC, sev)); - - constexpr absl::Duration kPeriod = absl::Seconds(1); - struct itimerspec its = {}; - its.it_value = its.it_interval = absl::ToTimespec(kPeriod); - ASSERT_NO_ERRNO(timer.Set(0, its)); - - absl::SleepFor(kPeriod * 3 + kTimerSlack); - - // The timer should still be running. - its = ASSERT_NO_ERRNO_AND_VALUE(timer.Get()); - EXPECT_TRUE(its.it_value.tv_nsec != 0 || its.it_value.tv_sec != 0); - - // Timer expirations are not counted as overruns under SIGEV_NONE. - EXPECT_THAT(timer.Overruns(), IsPosixErrorOkAndHolds(0)); -} - -std::atomic<int> counted_signals; - -void IntervalTimerCountingSignalHandler(int sig, siginfo_t* info, - void* ucontext) { - counted_signals.fetch_add(1 + info->si_overrun); -} - -TEST(IntervalTimerTest, PeriodicGroupDirectedSignal) { - constexpr int kSigno = SIGUSR1; - constexpr int kSigvalue = 42; - - // Install our signal handler. - counted_signals.store(0); - struct sigaction sa = {}; - sa.sa_sigaction = IntervalTimerCountingSignalHandler; - sigemptyset(&sa.sa_mask); - sa.sa_flags = SA_SIGINFO; - const auto scoped_sigaction = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(kSigno, sa)); - - // Ensure that kSigno is unblocked on at least one thread. - const auto scoped_sigmask = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_UNBLOCK, kSigno)); - - struct sigevent sev = {}; - sev.sigev_notify = SIGEV_SIGNAL; - sev.sigev_signo = kSigno; - sev.sigev_value.sival_int = kSigvalue; - auto timer = ASSERT_NO_ERRNO_AND_VALUE(TimerCreate(CLOCK_MONOTONIC, sev)); - - constexpr absl::Duration kPeriod = absl::Seconds(1); - constexpr int kCycles = 3; - struct itimerspec its = {}; - its.it_value = its.it_interval = absl::ToTimespec(kPeriod); - ASSERT_NO_ERRNO(timer.Set(0, its)); - - absl::SleepFor(kPeriod * kCycles + kTimerSlack); - EXPECT_GE(counted_signals.load(), kCycles); -} - -// From Linux's include/uapi/asm-generic/siginfo.h. -#ifndef sigev_notify_thread_id -#define sigev_notify_thread_id _sigev_un._tid -#endif - -TEST(IntervalTimerTest, PeriodicThreadDirectedSignal) { - constexpr int kSigno = SIGUSR1; - constexpr int kSigvalue = 42; - - // Block kSigno so that we can accumulate overruns. - sigset_t mask; - sigemptyset(&mask); - sigaddset(&mask, kSigno); - const auto scoped_sigmask = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_BLOCK, mask)); - - struct sigevent sev = {}; - sev.sigev_notify = SIGEV_THREAD_ID; - sev.sigev_signo = kSigno; - sev.sigev_value.sival_int = kSigvalue; - sev.sigev_notify_thread_id = gettid(); - auto timer = ASSERT_NO_ERRNO_AND_VALUE(TimerCreate(CLOCK_MONOTONIC, sev)); - - constexpr absl::Duration kPeriod = absl::Seconds(1); - constexpr int kCycles = 3; - struct itimerspec its = {}; - its.it_value = its.it_interval = absl::ToTimespec(kPeriod); - ASSERT_NO_ERRNO(timer.Set(0, its)); - absl::SleepFor(kPeriod * kCycles + kTimerSlack); - - // At least kCycles expirations should have occurred, resulting in kCycles-1 - // overruns (the first expiration sent the signal successfully). - siginfo_t si; - struct timespec zero_ts = absl::ToTimespec(absl::ZeroDuration()); - ASSERT_THAT(sigtimedwait(&mask, &si, &zero_ts), - SyscallSucceedsWithValue(kSigno)); - EXPECT_EQ(si.si_signo, kSigno); - EXPECT_EQ(si.si_code, SI_TIMER); - EXPECT_EQ(si.si_timerid, timer.get()); - EXPECT_GE(si.si_overrun, kCycles - 1); - EXPECT_EQ(si.si_int, kSigvalue); - - // Kill the timer, then drain any additional signal it may have enqueued. We - // can't do this before the preceding sigtimedwait because stopping or - // deleting the timer resets si_overrun to 0. - timer.reset(); - sigtimedwait(&mask, &si, &zero_ts); -} - -TEST(IntervalTimerTest, OtherThreadGroup) { - constexpr int kSigno = SIGUSR1; - - // Create a subprocess that does nothing until killed. - pid_t child_pid; - const auto sp = ASSERT_NO_ERRNO_AND_VALUE(ForkAndExec( - "/proc/self/exe", ExecveArray({"timers", "--timers_test_sleep"}), - ExecveArray(), &child_pid, nullptr)); - - // Verify that we can't create a timer that would send signals to it. - struct sigevent sev = {}; - sev.sigev_notify = SIGEV_THREAD_ID; - sev.sigev_signo = kSigno; - sev.sigev_notify_thread_id = child_pid; - EXPECT_THAT(TimerCreate(CLOCK_MONOTONIC, sev), PosixErrorIs(EINVAL, _)); -} - -TEST(IntervalTimerTest, RealTimeSignalsAreNotDuplicated) { - const int kSigno = SIGRTMIN; - constexpr int kSigvalue = 42; - - // Block signo so that we can accumulate overruns. - sigset_t mask; - sigemptyset(&mask); - sigaddset(&mask, kSigno); - const auto scoped_sigmask = ScopedSignalMask(SIG_BLOCK, mask); - - struct sigevent sev = {}; - sev.sigev_notify = SIGEV_THREAD_ID; - sev.sigev_signo = kSigno; - sev.sigev_value.sival_int = kSigvalue; - sev.sigev_notify_thread_id = gettid(); - const auto timer = - ASSERT_NO_ERRNO_AND_VALUE(TimerCreate(CLOCK_MONOTONIC, sev)); - - constexpr absl::Duration kPeriod = absl::Seconds(1); - constexpr int kCycles = 3; - struct itimerspec its = {}; - its.it_value = its.it_interval = absl::ToTimespec(kPeriod); - ASSERT_NO_ERRNO(timer.Set(0, its)); - absl::SleepFor(kPeriod * kCycles + kTimerSlack); - - // Stop the timer so that no further signals are enqueued after sigtimedwait. - struct timespec zero_ts = absl::ToTimespec(absl::ZeroDuration()); - its.it_value = its.it_interval = zero_ts; - ASSERT_NO_ERRNO(timer.Set(0, its)); - - // The timer should have sent only a single signal, even though the kernel - // supports enqueueing of multiple RT signals. - siginfo_t si; - ASSERT_THAT(sigtimedwait(&mask, &si, &zero_ts), - SyscallSucceedsWithValue(kSigno)); - EXPECT_EQ(si.si_signo, kSigno); - EXPECT_EQ(si.si_code, SI_TIMER); - EXPECT_EQ(si.si_timerid, timer.get()); - // si_overrun was reset by timer_settime. - EXPECT_EQ(si.si_overrun, 0); - EXPECT_EQ(si.si_int, kSigvalue); - EXPECT_THAT(sigtimedwait(&mask, &si, &zero_ts), - SyscallFailsWithErrno(EAGAIN)); -} - -TEST(IntervalTimerTest, AlreadyPendingSignal) { - constexpr int kSigno = SIGUSR1; - constexpr int kSigvalue = 42; - - // Block kSigno so that we can accumulate overruns. - sigset_t mask; - sigemptyset(&mask); - sigaddset(&mask, kSigno); - const auto scoped_sigmask = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_BLOCK, mask)); - - // Send ourselves a signal, preventing the timer from enqueuing. - ASSERT_THAT(tgkill(getpid(), gettid(), kSigno), SyscallSucceeds()); - - struct sigevent sev = {}; - sev.sigev_notify = SIGEV_THREAD_ID; - sev.sigev_signo = kSigno; - sev.sigev_value.sival_int = kSigvalue; - sev.sigev_notify_thread_id = gettid(); - auto timer = ASSERT_NO_ERRNO_AND_VALUE(TimerCreate(CLOCK_MONOTONIC, sev)); - - constexpr absl::Duration kPeriod = absl::Seconds(1); - constexpr int kCycles = 3; - struct itimerspec its = {}; - its.it_value = its.it_interval = absl::ToTimespec(kPeriod); - ASSERT_NO_ERRNO(timer.Set(0, its)); - - // End the sleep one cycle short; we will sleep for one more cycle below. - absl::SleepFor(kPeriod * (kCycles - 1)); - - // Dequeue the first signal, which we sent to ourselves with tgkill. - siginfo_t si; - struct timespec zero_ts = absl::ToTimespec(absl::ZeroDuration()); - ASSERT_THAT(sigtimedwait(&mask, &si, &zero_ts), - SyscallSucceedsWithValue(kSigno)); - EXPECT_EQ(si.si_signo, kSigno); - // glibc sigtimedwait silently replaces SI_TKILL with SI_USER: - // sysdeps/unix/sysv/linux/sigtimedwait.c:__sigtimedwait(). This isn't - // documented, so we don't depend on it. - EXPECT_THAT(si.si_code, AnyOf(SI_USER, SI_TKILL)); - - // Sleep for 1 more cycle to give the timer time to send a signal. - absl::SleepFor(kPeriod + kTimerSlack); - - // At least kCycles expirations should have occurred, resulting in kCycles-1 - // overruns (the last expiration sent the signal successfully). - ASSERT_THAT(sigtimedwait(&mask, &si, &zero_ts), - SyscallSucceedsWithValue(kSigno)); - EXPECT_EQ(si.si_signo, kSigno); - EXPECT_EQ(si.si_code, SI_TIMER); - EXPECT_EQ(si.si_timerid, timer.get()); - EXPECT_GE(si.si_overrun, kCycles - 1); - EXPECT_EQ(si.si_int, kSigvalue); - - // Kill the timer, then drain any additional signal it may have enqueued. We - // can't do this before the preceding sigtimedwait because stopping or - // deleting the timer resets si_overrun to 0. - timer.reset(); - sigtimedwait(&mask, &si, &zero_ts); -} - -TEST(IntervalTimerTest, IgnoredSignalCountsAsOverrun) { - constexpr int kSigno = SIGUSR1; - constexpr int kSigvalue = 42; - - // Ignore kSigno. - struct sigaction sa = {}; - sa.sa_handler = SIG_IGN; - const auto scoped_sigaction = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(kSigno, sa)); - - // Unblock kSigno so that ignored signals will be discarded. - sigset_t mask; - sigemptyset(&mask); - sigaddset(&mask, kSigno); - auto scoped_sigmask = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_UNBLOCK, mask)); - - struct sigevent sev = {}; - sev.sigev_notify = SIGEV_THREAD_ID; - sev.sigev_signo = kSigno; - sev.sigev_value.sival_int = kSigvalue; - sev.sigev_notify_thread_id = gettid(); - auto timer = ASSERT_NO_ERRNO_AND_VALUE(TimerCreate(CLOCK_MONOTONIC, sev)); - - constexpr absl::Duration kPeriod = absl::Seconds(1); - constexpr int kCycles = 3; - struct itimerspec its = {}; - its.it_value = its.it_interval = absl::ToTimespec(kPeriod); - ASSERT_NO_ERRNO(timer.Set(0, its)); - - // End the sleep one cycle short; we will sleep for one more cycle below. - absl::SleepFor(kPeriod * (kCycles - 1)); - - // Block kSigno so that ignored signals will be enqueued. - scoped_sigmask.Release()(); - scoped_sigmask = ASSERT_NO_ERRNO_AND_VALUE(ScopedSignalMask(SIG_BLOCK, mask)); - - // Sleep for 1 more cycle to give the timer time to send a signal. - absl::SleepFor(kPeriod + kTimerSlack); - - // At least kCycles expirations should have occurred, resulting in kCycles-1 - // overruns (the last expiration sent the signal successfully). - siginfo_t si; - struct timespec zero_ts = absl::ToTimespec(absl::ZeroDuration()); - ASSERT_THAT(sigtimedwait(&mask, &si, &zero_ts), - SyscallSucceedsWithValue(kSigno)); - EXPECT_EQ(si.si_signo, kSigno); - EXPECT_EQ(si.si_code, SI_TIMER); - EXPECT_EQ(si.si_timerid, timer.get()); - EXPECT_GE(si.si_overrun, kCycles - 1); - EXPECT_EQ(si.si_int, kSigvalue); - - // Kill the timer, then drain any additional signal it may have enqueued. We - // can't do this before the preceding sigtimedwait because stopping or - // deleting the timer resets si_overrun to 0. - timer.reset(); - sigtimedwait(&mask, &si, &zero_ts); -} - -} // namespace -} // namespace testing -} // namespace gvisor - -int main(int argc, char** argv) { - gvisor::testing::TestInit(&argc, &argv); - - if (absl::GetFlag(FLAGS_timers_test_sleep)) { - while (true) { - absl::SleepFor(absl::Seconds(10)); - } - } - - return RUN_ALL_TESTS(); -} diff --git a/test/syscalls/linux/tkill.cc b/test/syscalls/linux/tkill.cc deleted file mode 100644 index 8d8ebbb24..000000000 --- a/test/syscalls/linux/tkill.cc +++ /dev/null @@ -1,75 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <sys/syscall.h> -#include <sys/types.h> -#include <unistd.h> - -#include <cerrno> -#include <csignal> - -#include "gtest/gtest.h" -#include "test/util/logging.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -static int tkill(pid_t tid, int sig) { - int ret; - do { - // NOTE(b/25434735): tkill(2) could return EAGAIN for RT signals. - ret = syscall(SYS_tkill, tid, sig); - } while (ret == -1 && errno == EAGAIN); - return ret; -} - -TEST(TkillTest, InvalidTID) { - EXPECT_THAT(tkill(-1, 0), SyscallFailsWithErrno(EINVAL)); - EXPECT_THAT(tkill(0, 0), SyscallFailsWithErrno(EINVAL)); -} - -TEST(TkillTest, ValidTID) { - EXPECT_THAT(tkill(gettid(), 0), SyscallSucceeds()); -} - -void SigHandler(int sig, siginfo_t* info, void* context) { - TEST_CHECK(sig == SIGRTMAX); - TEST_CHECK(info->si_pid == getpid()); - TEST_CHECK(info->si_uid == getuid()); - TEST_CHECK(info->si_code == SI_TKILL); -} - -// Test with a real signal. Regression test for b/24790092. -TEST(TkillTest, ValidTIDAndRealSignal) { - struct sigaction sa; - sa.sa_sigaction = SigHandler; - sigfillset(&sa.sa_mask); - sa.sa_flags = SA_SIGINFO; - ASSERT_THAT(sigaction(SIGRTMAX, &sa, nullptr), SyscallSucceeds()); - // InitGoogle blocks all RT signals, so we need undo it. - sigset_t unblock; - sigemptyset(&unblock); - sigaddset(&unblock, SIGRTMAX); - ASSERT_THAT(sigprocmask(SIG_UNBLOCK, &unblock, nullptr), SyscallSucceeds()); - EXPECT_THAT(tkill(gettid(), SIGRTMAX), SyscallSucceeds()); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/truncate.cc b/test/syscalls/linux/truncate.cc deleted file mode 100644 index c988c6380..000000000 --- a/test/syscalls/linux/truncate.cc +++ /dev/null @@ -1,218 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <signal.h> -#include <sys/resource.h> -#include <sys/stat.h> -#include <sys/vfs.h> -#include <time.h> -#include <unistd.h> - -#include <iostream> -#include <string> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "absl/strings/string_view.h" -#include "test/syscalls/linux/file_base.h" -#include "test/util/capability_util.h" -#include "test/util/cleanup.h" -#include "test/util/file_descriptor.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -class FixtureTruncateTest : public FileTest { - void SetUp() override { FileTest::SetUp(); } -}; - -TEST_F(FixtureTruncateTest, Truncate) { - // Get the current rlimit and restore after test run. - struct rlimit initial_lim; - ASSERT_THAT(getrlimit(RLIMIT_FSIZE, &initial_lim), SyscallSucceeds()); - auto cleanup = Cleanup([&initial_lim] { - EXPECT_THAT(setrlimit(RLIMIT_FSIZE, &initial_lim), SyscallSucceeds()); - }); - - // Check that it starts at size zero. - struct stat buf; - ASSERT_THAT(fstat(test_file_fd_.get(), &buf), SyscallSucceeds()); - EXPECT_EQ(buf.st_size, 0); - - // Stay at size zero. - EXPECT_THAT(truncate(test_file_name_.c_str(), 0), SyscallSucceeds()); - ASSERT_THAT(fstat(test_file_fd_.get(), &buf), SyscallSucceeds()); - EXPECT_EQ(buf.st_size, 0); - - // Grow to ten bytes. - EXPECT_THAT(truncate(test_file_name_.c_str(), 10), SyscallSucceeds()); - ASSERT_THAT(fstat(test_file_fd_.get(), &buf), SyscallSucceeds()); - EXPECT_EQ(buf.st_size, 10); - - // Can't be truncated to a negative number. - EXPECT_THAT(truncate(test_file_name_.c_str(), -1), - SyscallFailsWithErrno(EINVAL)); - - // Try growing past the file size limit. - sigset_t new_mask; - sigemptyset(&new_mask); - sigaddset(&new_mask, SIGXFSZ); - sigprocmask(SIG_BLOCK, &new_mask, nullptr); - struct timespec timelimit; - timelimit.tv_sec = 10; - timelimit.tv_nsec = 0; - - struct rlimit setlim; - setlim.rlim_cur = 1024; - setlim.rlim_max = RLIM_INFINITY; - ASSERT_THAT(setrlimit(RLIMIT_FSIZE, &setlim), SyscallSucceeds()); - EXPECT_THAT(truncate(test_file_name_.c_str(), 1025), - SyscallFailsWithErrno(EFBIG)); - EXPECT_EQ(sigtimedwait(&new_mask, nullptr, &timelimit), SIGXFSZ); - ASSERT_THAT(sigprocmask(SIG_UNBLOCK, &new_mask, nullptr), SyscallSucceeds()); - - // Shrink back down to zero. - EXPECT_THAT(truncate(test_file_name_.c_str(), 0), SyscallSucceeds()); - ASSERT_THAT(fstat(test_file_fd_.get(), &buf), SyscallSucceeds()); - EXPECT_EQ(buf.st_size, 0); -} - -TEST_F(FixtureTruncateTest, Ftruncate) { - // Get the current rlimit and restore after test run. - struct rlimit initial_lim; - ASSERT_THAT(getrlimit(RLIMIT_FSIZE, &initial_lim), SyscallSucceeds()); - auto cleanup = Cleanup([&initial_lim] { - EXPECT_THAT(setrlimit(RLIMIT_FSIZE, &initial_lim), SyscallSucceeds()); - }); - - // Check that it starts at size zero. - struct stat buf; - ASSERT_THAT(fstat(test_file_fd_.get(), &buf), SyscallSucceeds()); - EXPECT_EQ(buf.st_size, 0); - - // Stay at size zero. - EXPECT_THAT(ftruncate(test_file_fd_.get(), 0), SyscallSucceeds()); - ASSERT_THAT(fstat(test_file_fd_.get(), &buf), SyscallSucceeds()); - EXPECT_EQ(buf.st_size, 0); - - // Grow to ten bytes. - EXPECT_THAT(ftruncate(test_file_fd_.get(), 10), SyscallSucceeds()); - ASSERT_THAT(fstat(test_file_fd_.get(), &buf), SyscallSucceeds()); - EXPECT_EQ(buf.st_size, 10); - - // Can't be truncated to a negative number. - EXPECT_THAT(ftruncate(test_file_fd_.get(), -1), - SyscallFailsWithErrno(EINVAL)); - - // Try growing past the file size limit. - sigset_t new_mask; - sigemptyset(&new_mask); - sigaddset(&new_mask, SIGXFSZ); - sigprocmask(SIG_BLOCK, &new_mask, nullptr); - struct timespec timelimit; - timelimit.tv_sec = 10; - timelimit.tv_nsec = 0; - - struct rlimit setlim; - setlim.rlim_cur = 1024; - setlim.rlim_max = RLIM_INFINITY; - ASSERT_THAT(setrlimit(RLIMIT_FSIZE, &setlim), SyscallSucceeds()); - EXPECT_THAT(ftruncate(test_file_fd_.get(), 1025), - SyscallFailsWithErrno(EFBIG)); - EXPECT_EQ(sigtimedwait(&new_mask, nullptr, &timelimit), SIGXFSZ); - ASSERT_THAT(sigprocmask(SIG_UNBLOCK, &new_mask, nullptr), SyscallSucceeds()); - - // Shrink back down to zero. - EXPECT_THAT(ftruncate(test_file_fd_.get(), 0), SyscallSucceeds()); - ASSERT_THAT(fstat(test_file_fd_.get(), &buf), SyscallSucceeds()); - EXPECT_EQ(buf.st_size, 0); -} - -// Truncating a file down clears that portion of the file. -TEST_F(FixtureTruncateTest, FtruncateShrinkGrow) { - std::vector<char> buf(10, 'a'); - EXPECT_THAT(WriteFd(test_file_fd_.get(), buf.data(), buf.size()), - SyscallSucceedsWithValue(buf.size())); - - // Shrink then regrow the file. This should clear the second half of the file. - EXPECT_THAT(ftruncate(test_file_fd_.get(), 5), SyscallSucceeds()); - EXPECT_THAT(ftruncate(test_file_fd_.get(), 10), SyscallSucceeds()); - - EXPECT_THAT(lseek(test_file_fd_.get(), 0, SEEK_SET), SyscallSucceeds()); - - std::vector<char> buf2(10); - EXPECT_THAT(ReadFd(test_file_fd_.get(), buf2.data(), buf2.size()), - SyscallSucceedsWithValue(buf2.size())); - - std::vector<char> expect = {'a', 'a', 'a', 'a', 'a', - '\0', '\0', '\0', '\0', '\0'}; - EXPECT_EQ(expect, buf2); -} - -TEST(TruncateTest, TruncateDir) { - auto temp_dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - EXPECT_THAT(truncate(temp_dir.path().c_str(), 0), - SyscallFailsWithErrno(EISDIR)); -} - -TEST(TruncateTest, FtruncateDir) { - auto temp_dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(temp_dir.path(), O_DIRECTORY | O_RDONLY)); - EXPECT_THAT(ftruncate(fd.get(), 0), SyscallFailsWithErrno(EINVAL)); -} - -TEST(TruncateTest, TruncateNonWriteable) { - // Make sure we don't have CAP_DAC_OVERRIDE, since that allows the user to - // always override write permissions. - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); - auto temp_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), absl::string_view(), 0555 /* mode */)); - EXPECT_THAT(truncate(temp_file.path().c_str(), 0), - SyscallFailsWithErrno(EACCES)); -} - -TEST(TruncateTest, FtruncateNonWriteable) { - auto temp_file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileWith( - GetAbsoluteTestTmpdir(), absl::string_view(), 0555 /* mode */)); - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(temp_file.path(), O_RDONLY)); - EXPECT_THAT(ftruncate(fd.get(), 0), SyscallFailsWithErrno(EINVAL)); -} - -TEST(TruncateTest, TruncateNonExist) { - EXPECT_THAT(truncate("/foo/bar", 0), SyscallFailsWithErrno(ENOENT)); -} - -TEST(TruncateTest, FtruncateVirtualTmp_NoRandomSave) { - auto temp_file = NewTempAbsPathInDir("/dev/shm"); - const DisableSave ds; // Incompatible permissions. - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(temp_file, O_RDWR | O_CREAT | O_EXCL, 0)); - EXPECT_THAT(ftruncate(fd.get(), 100), SyscallSucceeds()); -} - -// NOTE: There are additional truncate(2)/ftruncate(2) tests in mknod.cc -// which are there to avoid running the tests on a number of different -// filesystems which may not support mknod. - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/udp_bind.cc b/test/syscalls/linux/udp_bind.cc deleted file mode 100644 index 6d92bdbeb..000000000 --- a/test/syscalls/linux/udp_bind.cc +++ /dev/null @@ -1,316 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <arpa/inet.h> -#include <sys/socket.h> -#include <sys/types.h> - -#include "gtest/gtest.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -struct sockaddr_in_common { - sa_family_t sin_family; - in_port_t sin_port; -}; - -struct SendtoTestParam { - // Human readable description of test parameter. - std::string description; - - // Test is broken in gVisor, skip. - bool skip_on_gvisor; - - // Domain for the socket that will do the sending. - int send_domain; - - // Address to bind for the socket that will do the sending. - struct sockaddr_storage send_addr; - socklen_t send_addr_len; // 0 for unbound. - - // Address to connect to for the socket that will do the sending. - struct sockaddr_storage connect_addr; - socklen_t connect_addr_len; // 0 for no connection. - - // Domain for the socket that will do the receiving. - int recv_domain; - - // Address to bind for the socket that will do the receiving. - struct sockaddr_storage recv_addr; - socklen_t recv_addr_len; - - // Address to send to. - struct sockaddr_storage sendto_addr; - socklen_t sendto_addr_len; - - // Expected errno for the sendto call. - std::vector<int> sendto_errnos; // empty on success. -}; - -class SendtoTest : public ::testing::TestWithParam<SendtoTestParam> { - protected: - SendtoTest() { - // gUnit uses printf, so so will we. - printf("Testing with %s\n", GetParam().description.c_str()); - } -}; - -TEST_P(SendtoTest, Sendto) { - auto param = GetParam(); - - SKIP_IF(param.skip_on_gvisor && IsRunningOnGvisor()); - - const FileDescriptor s1 = - ASSERT_NO_ERRNO_AND_VALUE(Socket(param.send_domain, SOCK_DGRAM, 0)); - const FileDescriptor s2 = - ASSERT_NO_ERRNO_AND_VALUE(Socket(param.recv_domain, SOCK_DGRAM, 0)); - - if (param.send_addr_len > 0) { - ASSERT_THAT(bind(s1.get(), reinterpret_cast<sockaddr*>(¶m.send_addr), - param.send_addr_len), - SyscallSucceeds()); - } - - if (param.connect_addr_len > 0) { - ASSERT_THAT( - connect(s1.get(), reinterpret_cast<sockaddr*>(¶m.connect_addr), - param.connect_addr_len), - SyscallSucceeds()); - } - - ASSERT_THAT(bind(s2.get(), reinterpret_cast<sockaddr*>(¶m.recv_addr), - param.recv_addr_len), - SyscallSucceeds()); - - struct sockaddr_storage real_recv_addr = {}; - socklen_t real_recv_addr_len = param.recv_addr_len; - ASSERT_THAT( - getsockname(s2.get(), reinterpret_cast<sockaddr*>(&real_recv_addr), - &real_recv_addr_len), - SyscallSucceeds()); - - ASSERT_EQ(real_recv_addr_len, param.recv_addr_len); - - int recv_port = - reinterpret_cast<sockaddr_in_common*>(&real_recv_addr)->sin_port; - - struct sockaddr_storage sendto_addr = param.sendto_addr; - reinterpret_cast<sockaddr_in_common*>(&sendto_addr)->sin_port = recv_port; - - char buf[20] = {}; - if (!param.sendto_errnos.empty()) { - ASSERT_THAT(RetryEINTR(sendto)(s1.get(), buf, sizeof(buf), 0, - reinterpret_cast<sockaddr*>(&sendto_addr), - param.sendto_addr_len), - SyscallFailsWithErrno(ElementOf(param.sendto_errnos))); - return; - } - - ASSERT_THAT(RetryEINTR(sendto)(s1.get(), buf, sizeof(buf), 0, - reinterpret_cast<sockaddr*>(&sendto_addr), - param.sendto_addr_len), - SyscallSucceedsWithValue(sizeof(buf))); - - struct sockaddr_storage got_addr = {}; - socklen_t got_addr_len = sizeof(sockaddr_storage); - ASSERT_THAT(RetryEINTR(recvfrom)(s2.get(), buf, sizeof(buf), 0, - reinterpret_cast<sockaddr*>(&got_addr), - &got_addr_len), - SyscallSucceedsWithValue(sizeof(buf))); - - ASSERT_GT(got_addr_len, sizeof(sockaddr_in_common)); - int got_port = reinterpret_cast<sockaddr_in_common*>(&got_addr)->sin_port; - - struct sockaddr_storage sender_addr = {}; - socklen_t sender_addr_len = sizeof(sockaddr_storage); - ASSERT_THAT(getsockname(s1.get(), reinterpret_cast<sockaddr*>(&sender_addr), - &sender_addr_len), - SyscallSucceeds()); - - ASSERT_GT(sender_addr_len, sizeof(sockaddr_in_common)); - int sender_port = - reinterpret_cast<sockaddr_in_common*>(&sender_addr)->sin_port; - - EXPECT_EQ(got_port, sender_port); -} - -socklen_t Ipv4Addr(sockaddr_storage* addr, int port = 0) { - auto addr4 = reinterpret_cast<sockaddr_in*>(addr); - addr4->sin_family = AF_INET; - addr4->sin_port = port; - inet_pton(AF_INET, "127.0.0.1", &addr4->sin_addr.s_addr); - return sizeof(struct sockaddr_in); -} - -socklen_t Ipv6Addr(sockaddr_storage* addr, int port = 0) { - auto addr6 = reinterpret_cast<sockaddr_in6*>(addr); - addr6->sin6_family = AF_INET6; - addr6->sin6_port = port; - inet_pton(AF_INET6, "::1", &addr6->sin6_addr.s6_addr); - return sizeof(struct sockaddr_in6); -} - -socklen_t Ipv4MappedIpv6Addr(sockaddr_storage* addr, int port = 0) { - auto addr6 = reinterpret_cast<sockaddr_in6*>(addr); - addr6->sin6_family = AF_INET6; - addr6->sin6_port = port; - inet_pton(AF_INET6, "::ffff:127.0.0.1", &addr6->sin6_addr.s6_addr); - return sizeof(struct sockaddr_in6); -} - -INSTANTIATE_TEST_SUITE_P( - UdpBindTest, SendtoTest, - ::testing::Values( - []() { - SendtoTestParam param = {}; - param.description = "IPv4 mapped IPv6 sendto IPv4 mapped IPv6"; - param.send_domain = AF_INET6; - param.send_addr_len = Ipv4MappedIpv6Addr(¶m.send_addr); - param.recv_domain = AF_INET6; - param.recv_addr_len = Ipv4MappedIpv6Addr(¶m.recv_addr); - param.sendto_addr_len = Ipv4MappedIpv6Addr(¶m.sendto_addr); - return param; - }(), - []() { - SendtoTestParam param = {}; - param.description = "IPv6 sendto IPv6"; - param.send_domain = AF_INET6; - param.send_addr_len = Ipv6Addr(¶m.send_addr); - param.recv_domain = AF_INET6; - param.recv_addr_len = Ipv6Addr(¶m.recv_addr); - param.sendto_addr_len = Ipv6Addr(¶m.sendto_addr); - return param; - }(), - []() { - SendtoTestParam param = {}; - param.description = "IPv4 sendto IPv4"; - param.send_domain = AF_INET; - param.send_addr_len = Ipv4Addr(¶m.send_addr); - param.recv_domain = AF_INET; - param.recv_addr_len = Ipv4Addr(¶m.recv_addr); - param.sendto_addr_len = Ipv4Addr(¶m.sendto_addr); - return param; - }(), - []() { - SendtoTestParam param = {}; - param.description = "IPv4 mapped IPv6 sendto IPv4"; - param.send_domain = AF_INET6; - param.send_addr_len = Ipv4MappedIpv6Addr(¶m.send_addr); - param.recv_domain = AF_INET; - param.recv_addr_len = Ipv4Addr(¶m.recv_addr); - param.sendto_addr_len = Ipv4MappedIpv6Addr(¶m.sendto_addr); - return param; - }(), - []() { - SendtoTestParam param = {}; - param.description = "IPv4 sendto IPv4 mapped IPv6"; - param.send_domain = AF_INET; - param.send_addr_len = Ipv4Addr(¶m.send_addr); - param.recv_domain = AF_INET6; - param.recv_addr_len = Ipv4MappedIpv6Addr(¶m.recv_addr); - param.sendto_addr_len = Ipv4Addr(¶m.sendto_addr); - return param; - }(), - []() { - SendtoTestParam param = {}; - param.description = "unbound IPv6 sendto IPv4 mapped IPv6"; - param.send_domain = AF_INET6; - param.recv_domain = AF_INET6; - param.recv_addr_len = Ipv4MappedIpv6Addr(¶m.recv_addr); - param.sendto_addr_len = Ipv4MappedIpv6Addr(¶m.sendto_addr); - return param; - }(), - []() { - SendtoTestParam param = {}; - param.description = "unbound IPv6 sendto IPv4"; - param.send_domain = AF_INET6; - param.recv_domain = AF_INET; - param.recv_addr_len = Ipv4Addr(¶m.recv_addr); - param.sendto_addr_len = Ipv4MappedIpv6Addr(¶m.sendto_addr); - return param; - }(), - []() { - SendtoTestParam param = {}; - param.description = "IPv6 sendto IPv4"; - param.send_domain = AF_INET6; - param.send_addr_len = Ipv6Addr(¶m.send_addr); - param.recv_domain = AF_INET; - param.recv_addr_len = Ipv4Addr(¶m.recv_addr); - param.sendto_addr_len = Ipv4MappedIpv6Addr(¶m.sendto_addr); - param.sendto_errnos = {ENETUNREACH}; - return param; - }(), - []() { - SendtoTestParam param = {}; - param.description = "IPv4 mapped IPv6 sendto IPv6"; - param.send_domain = AF_INET6; - param.send_addr_len = Ipv4MappedIpv6Addr(¶m.send_addr); - param.recv_domain = AF_INET6; - param.recv_addr_len = Ipv6Addr(¶m.recv_addr); - param.sendto_addr_len = Ipv6Addr(¶m.sendto_addr); - param.sendto_errnos = {EAFNOSUPPORT}; - // The errno returned changed in Linux commit c8e6ad0829a723. - param.sendto_errnos = {EINVAL, EAFNOSUPPORT}; - return param; - }(), - []() { - SendtoTestParam param = {}; - param.description = "connected IPv4 mapped IPv6 sendto IPv6"; - param.send_domain = AF_INET6; - param.connect_addr_len = - Ipv4MappedIpv6Addr(¶m.connect_addr, 5000); - param.recv_domain = AF_INET6; - param.recv_addr_len = Ipv6Addr(¶m.recv_addr); - param.sendto_addr_len = Ipv6Addr(¶m.sendto_addr); - // The errno returned changed in Linux commit c8e6ad0829a723. - param.sendto_errnos = {EINVAL, EAFNOSUPPORT}; - return param; - }(), - []() { - SendtoTestParam param = {}; - param.description = "connected IPv6 sendto IPv4 mapped IPv6"; - // TODO(igudger): Determine if this inconsistent behavior is worth - // implementing. - param.skip_on_gvisor = true; - param.send_domain = AF_INET6; - param.connect_addr_len = Ipv6Addr(¶m.connect_addr, 5000); - param.recv_domain = AF_INET6; - param.recv_addr_len = Ipv4MappedIpv6Addr(¶m.recv_addr); - param.sendto_addr_len = Ipv4MappedIpv6Addr(¶m.sendto_addr); - return param; - }(), - []() { - SendtoTestParam param = {}; - param.description = "connected IPv6 sendto IPv4"; - // TODO(igudger): Determine if this inconsistent behavior is worth - // implementing. - param.skip_on_gvisor = true; - param.send_domain = AF_INET6; - param.connect_addr_len = Ipv6Addr(¶m.connect_addr, 5000); - param.recv_domain = AF_INET; - param.recv_addr_len = Ipv4Addr(¶m.recv_addr); - param.sendto_addr_len = Ipv4MappedIpv6Addr(¶m.sendto_addr); - return param; - }())); - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/udp_socket.cc b/test/syscalls/linux/udp_socket.cc deleted file mode 100644 index 7a8ac30a4..000000000 --- a/test/syscalls/linux/udp_socket.cc +++ /dev/null @@ -1,30 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/syscalls/linux/udp_socket_test_cases.h" - -namespace gvisor { -namespace testing { - -namespace { - -INSTANTIATE_TEST_SUITE_P(AllInetTests, UdpSocketTest, - ::testing::Values(AddressFamily::kIpv4, - AddressFamily::kIpv6, - AddressFamily::kDualStack)); - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/udp_socket_errqueue_test_case.cc b/test/syscalls/linux/udp_socket_errqueue_test_case.cc deleted file mode 100644 index fcdba7279..000000000 --- a/test/syscalls/linux/udp_socket_errqueue_test_case.cc +++ /dev/null @@ -1,57 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef __fuchsia__ - -#include <arpa/inet.h> -#include <fcntl.h> -#include <linux/errqueue.h> -#include <netinet/in.h> -#include <sys/ioctl.h> -#include <sys/socket.h> -#include <sys/types.h> - -#include "gtest/gtest.h" -#include "absl/base/macros.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/udp_socket_test_cases.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { - -TEST_P(UdpSocketTest, ErrorQueue) { - char cmsgbuf[CMSG_SPACE(sizeof(sock_extended_err))]; - msghdr msg; - memset(&msg, 0, sizeof(msg)); - iovec iov; - memset(&iov, 0, sizeof(iov)); - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - msg.msg_control = cmsgbuf; - msg.msg_controllen = sizeof(cmsgbuf); - - // recv*(MSG_ERRQUEUE) never blocks, even without MSG_DONTWAIT. - EXPECT_THAT(RetryEINTR(recvmsg)(s_, &msg, MSG_ERRQUEUE), - SyscallFailsWithErrno(EAGAIN)); -} - -} // namespace testing -} // namespace gvisor - -#endif // __fuchsia__ diff --git a/test/syscalls/linux/udp_socket_test_cases.cc b/test/syscalls/linux/udp_socket_test_cases.cc deleted file mode 100644 index a2f6ef8cc..000000000 --- a/test/syscalls/linux/udp_socket_test_cases.cc +++ /dev/null @@ -1,1500 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/syscalls/linux/udp_socket_test_cases.h" - -#include <arpa/inet.h> -#include <fcntl.h> -#include <netinet/in.h> -#include <sys/ioctl.h> -#include <sys/socket.h> -#include <sys/types.h> - -#include "gtest/gtest.h" -#include "absl/base/macros.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/syscalls/linux/socket_test_util.h" -#include "test/syscalls/linux/unix_domain_socket_test_util.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { - -// Gets a pointer to the port component of the given address. -uint16_t* Port(struct sockaddr_storage* addr) { - switch (addr->ss_family) { - case AF_INET: { - auto sin = reinterpret_cast<struct sockaddr_in*>(addr); - return &sin->sin_port; - } - case AF_INET6: { - auto sin6 = reinterpret_cast<struct sockaddr_in6*>(addr); - return &sin6->sin6_port; - } - } - - return nullptr; -} - -void UdpSocketTest::SetUp() { - int type; - if (GetParam() == AddressFamily::kIpv4) { - type = AF_INET; - auto sin = reinterpret_cast<struct sockaddr_in*>(&anyaddr_storage_); - addrlen_ = sizeof(*sin); - sin->sin_addr.s_addr = htonl(INADDR_ANY); - } else { - type = AF_INET6; - auto sin6 = reinterpret_cast<struct sockaddr_in6*>(&anyaddr_storage_); - addrlen_ = sizeof(*sin6); - if (GetParam() == AddressFamily::kIpv6) { - sin6->sin6_addr = IN6ADDR_ANY_INIT; - } else { - TestAddress const& v4_mapped_any = V4MappedAny(); - sin6->sin6_addr = - reinterpret_cast<const struct sockaddr_in6*>(&v4_mapped_any.addr) - ->sin6_addr; - } - } - ASSERT_THAT(s_ = socket(type, SOCK_DGRAM, IPPROTO_UDP), SyscallSucceeds()); - - ASSERT_THAT(t_ = socket(type, SOCK_DGRAM, IPPROTO_UDP), SyscallSucceeds()); - - memset(&anyaddr_storage_, 0, sizeof(anyaddr_storage_)); - anyaddr_ = reinterpret_cast<struct sockaddr*>(&anyaddr_storage_); - anyaddr_->sa_family = type; - - if (gvisor::testing::IsRunningOnGvisor()) { - for (size_t i = 0; i < ABSL_ARRAYSIZE(ports_); ++i) { - ports_[i] = TestPort + i; - } - } else { - // When not under gvisor, use utility function to pick port. Assert that - // all ports are different. - std::string error; - for (size_t i = 0; i < ABSL_ARRAYSIZE(ports_); ++i) { - // Find an unused port, we specify port 0 to allow the kernel to provide - // the port. - bool unique = true; - do { - ports_[i] = ASSERT_NO_ERRNO_AND_VALUE(PortAvailable( - 0, AddressFamily::kDualStack, SocketType::kUdp, false)); - ASSERT_GT(ports_[i], 0); - for (size_t j = 0; j < i; ++j) { - if (ports_[j] == ports_[i]) { - unique = false; - break; - } - } - } while (!unique); - } - } - - // Initialize the sockaddrs. - for (size_t i = 0; i < ABSL_ARRAYSIZE(addr_); ++i) { - memset(&addr_storage_[i], 0, sizeof(addr_storage_[i])); - - addr_[i] = reinterpret_cast<struct sockaddr*>(&addr_storage_[i]); - addr_[i]->sa_family = type; - - switch (type) { - case AF_INET: { - auto sin = reinterpret_cast<struct sockaddr_in*>(addr_[i]); - sin->sin_addr.s_addr = htonl(INADDR_LOOPBACK); - sin->sin_port = htons(ports_[i]); - break; - } - case AF_INET6: { - auto sin6 = reinterpret_cast<struct sockaddr_in6*>(addr_[i]); - sin6->sin6_addr = in6addr_loopback; - sin6->sin6_port = htons(ports_[i]); - break; - } - } - } -} - -TEST_P(UdpSocketTest, Creation) { - int type = AF_INET6; - if (GetParam() == AddressFamily::kIpv4) { - type = AF_INET; - } - - int s_; - - ASSERT_THAT(s_ = socket(type, SOCK_DGRAM, IPPROTO_UDP), SyscallSucceeds()); - EXPECT_THAT(close(s_), SyscallSucceeds()); - - ASSERT_THAT(s_ = socket(type, SOCK_DGRAM, 0), SyscallSucceeds()); - EXPECT_THAT(close(s_), SyscallSucceeds()); - - ASSERT_THAT(s_ = socket(type, SOCK_STREAM, IPPROTO_UDP), SyscallFails()); -} - -TEST_P(UdpSocketTest, Getsockname) { - // Check that we're not bound. - struct sockaddr_storage addr; - socklen_t addrlen = sizeof(addr); - EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, addrlen_); - EXPECT_EQ(memcmp(&addr, anyaddr_, addrlen_), 0); - - // Bind, then check that we get the right address. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - addrlen = sizeof(addr); - EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, addrlen_); - EXPECT_EQ(memcmp(&addr, addr_[0], addrlen_), 0); -} - -TEST_P(UdpSocketTest, Getpeername) { - // Check that we're not connected. - struct sockaddr_storage addr; - socklen_t addrlen = sizeof(addr); - EXPECT_THAT(getpeername(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallFailsWithErrno(ENOTCONN)); - - // Connect, then check that we get the right address. - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - - addrlen = sizeof(addr); - EXPECT_THAT(getpeername(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, addrlen_); - EXPECT_EQ(memcmp(&addr, addr_[0], addrlen_), 0); -} - -TEST_P(UdpSocketTest, SendNotConnected) { - // Do send & write, they must fail. - char buf[512]; - EXPECT_THAT(send(s_, buf, sizeof(buf), 0), - SyscallFailsWithErrno(EDESTADDRREQ)); - - EXPECT_THAT(write(s_, buf, sizeof(buf)), SyscallFailsWithErrno(EDESTADDRREQ)); - - // Use sendto. - ASSERT_THAT(sendto(s_, buf, sizeof(buf), 0, addr_[0], addrlen_), - SyscallSucceedsWithValue(sizeof(buf))); - - // Check that we're bound now. - struct sockaddr_storage addr; - socklen_t addrlen = sizeof(addr); - EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, addrlen_); - EXPECT_NE(*Port(&addr), 0); -} - -TEST_P(UdpSocketTest, ConnectBinds) { - // Connect the socket. - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Check that we're bound now. - struct sockaddr_storage addr; - socklen_t addrlen = sizeof(addr); - EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, addrlen_); - EXPECT_NE(*Port(&addr), 0); -} - -TEST_P(UdpSocketTest, ReceiveNotBound) { - char buf[512]; - EXPECT_THAT(recv(s_, buf, sizeof(buf), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); -} - -TEST_P(UdpSocketTest, Bind) { - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Try to bind again. - EXPECT_THAT(bind(s_, addr_[1], addrlen_), SyscallFailsWithErrno(EINVAL)); - - // Check that we're still bound to the original address. - struct sockaddr_storage addr; - socklen_t addrlen = sizeof(addr); - EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, addrlen_); - EXPECT_EQ(memcmp(&addr, addr_[0], addrlen_), 0); -} - -TEST_P(UdpSocketTest, BindInUse) { - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Try to bind again. - EXPECT_THAT(bind(t_, addr_[0], addrlen_), SyscallFailsWithErrno(EADDRINUSE)); -} - -TEST_P(UdpSocketTest, ReceiveAfterConnect) { - // Connect s_ to loopback:TestPort, and bind t_ to loopback:TestPort. - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(bind(t_, addr_[0], addrlen_), SyscallSucceeds()); - - // Get the address s_ was bound to during connect. - struct sockaddr_storage addr; - socklen_t addrlen = sizeof(addr); - EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, addrlen_); - - // Send from t_ to s_. - char buf[512]; - RandomizeBuffer(buf, sizeof(buf)); - ASSERT_THAT(sendto(t_, buf, sizeof(buf), 0, - reinterpret_cast<sockaddr*>(&addr), addrlen), - SyscallSucceedsWithValue(sizeof(buf))); - - // Receive the data. - char received[sizeof(buf)]; - EXPECT_THAT(recv(s_, received, sizeof(received), 0), - SyscallSucceedsWithValue(sizeof(received))); - EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); -} - -TEST_P(UdpSocketTest, ReceiveAfterDisconnect) { - // Connect s_ to loopback:TestPort, and bind t_ to loopback:TestPort. - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(bind(t_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(t_, addr_[1], addrlen_), SyscallSucceeds()); - - // Get the address s_ was bound to during connect. - struct sockaddr_storage addr; - socklen_t addrlen = sizeof(addr); - EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, addrlen_); - - for (int i = 0; i < 2; i++) { - // Send from t_ to s_. - char buf[512]; - RandomizeBuffer(buf, sizeof(buf)); - EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - ASSERT_THAT(sendto(t_, buf, sizeof(buf), 0, - reinterpret_cast<sockaddr*>(&addr), addrlen), - SyscallSucceedsWithValue(sizeof(buf))); - - // Receive the data. - char received[sizeof(buf)]; - EXPECT_THAT(recv(s_, received, sizeof(received), 0), - SyscallSucceedsWithValue(sizeof(received))); - EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); - - // Disconnect s_. - struct sockaddr addr = {}; - addr.sa_family = AF_UNSPEC; - ASSERT_THAT(connect(s_, &addr, sizeof(addr.sa_family)), SyscallSucceeds()); - // Connect s_ loopback:TestPort. - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - } -} - -TEST_P(UdpSocketTest, Connect) { - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Check that we're connected to the right peer. - struct sockaddr_storage peer; - socklen_t peerlen = sizeof(peer); - EXPECT_THAT(getpeername(s_, reinterpret_cast<sockaddr*>(&peer), &peerlen), - SyscallSucceeds()); - EXPECT_EQ(peerlen, addrlen_); - EXPECT_EQ(memcmp(&peer, addr_[0], addrlen_), 0); - - // Try to bind after connect. - EXPECT_THAT(bind(s_, addr_[1], addrlen_), SyscallFailsWithErrno(EINVAL)); - - // Try to connect again. - EXPECT_THAT(connect(s_, addr_[2], addrlen_), SyscallSucceeds()); - - // Check that peer name changed. - peerlen = sizeof(peer); - EXPECT_THAT(getpeername(s_, reinterpret_cast<sockaddr*>(&peer), &peerlen), - SyscallSucceeds()); - EXPECT_EQ(peerlen, addrlen_); - EXPECT_EQ(memcmp(&peer, addr_[2], addrlen_), 0); -} - -void ConnectAny(AddressFamily family, int sockfd, uint16_t port) { - struct sockaddr_storage addr = {}; - - // Precondition check. - { - socklen_t addrlen = sizeof(addr); - EXPECT_THAT( - getsockname(sockfd, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - - if (family == AddressFamily::kIpv4) { - auto addr_out = reinterpret_cast<struct sockaddr_in*>(&addr); - EXPECT_EQ(addrlen, sizeof(*addr_out)); - EXPECT_EQ(addr_out->sin_addr.s_addr, htonl(INADDR_ANY)); - } else { - auto addr_out = reinterpret_cast<struct sockaddr_in6*>(&addr); - EXPECT_EQ(addrlen, sizeof(*addr_out)); - struct in6_addr any = IN6ADDR_ANY_INIT; - EXPECT_EQ(memcmp(&addr_out->sin6_addr, &any, sizeof(in6_addr)), 0); - } - - { - socklen_t addrlen = sizeof(addr); - EXPECT_THAT( - getpeername(sockfd, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallFailsWithErrno(ENOTCONN)); - } - - struct sockaddr_storage baddr = {}; - if (family == AddressFamily::kIpv4) { - auto addr_in = reinterpret_cast<struct sockaddr_in*>(&baddr); - addrlen = sizeof(*addr_in); - addr_in->sin_family = AF_INET; - addr_in->sin_addr.s_addr = htonl(INADDR_ANY); - addr_in->sin_port = port; - } else { - auto addr_in = reinterpret_cast<struct sockaddr_in6*>(&baddr); - addrlen = sizeof(*addr_in); - addr_in->sin6_family = AF_INET6; - addr_in->sin6_port = port; - if (family == AddressFamily::kIpv6) { - addr_in->sin6_addr = IN6ADDR_ANY_INIT; - } else { - TestAddress const& v4_mapped_any = V4MappedAny(); - addr_in->sin6_addr = - reinterpret_cast<const struct sockaddr_in6*>(&v4_mapped_any.addr) - ->sin6_addr; - } - } - - // TODO(b/138658473): gVisor doesn't allow connecting to the zero port. - if (port == 0) { - SKIP_IF(IsRunningOnGvisor()); - } - - ASSERT_THAT(connect(sockfd, reinterpret_cast<sockaddr*>(&baddr), addrlen), - SyscallSucceeds()); - } - - // Postcondition check. - { - socklen_t addrlen = sizeof(addr); - EXPECT_THAT( - getsockname(sockfd, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - - if (family == AddressFamily::kIpv4) { - auto addr_out = reinterpret_cast<struct sockaddr_in*>(&addr); - EXPECT_EQ(addrlen, sizeof(*addr_out)); - EXPECT_EQ(addr_out->sin_addr.s_addr, htonl(INADDR_LOOPBACK)); - } else { - auto addr_out = reinterpret_cast<struct sockaddr_in6*>(&addr); - EXPECT_EQ(addrlen, sizeof(*addr_out)); - struct in6_addr loopback; - if (family == AddressFamily::kIpv6) { - loopback = IN6ADDR_LOOPBACK_INIT; - } else { - TestAddress const& v4_mapped_loopback = V4MappedLoopback(); - loopback = reinterpret_cast<const struct sockaddr_in6*>( - &v4_mapped_loopback.addr) - ->sin6_addr; - } - - EXPECT_EQ(memcmp(&addr_out->sin6_addr, &loopback, sizeof(in6_addr)), 0); - } - - addrlen = sizeof(addr); - if (port == 0) { - EXPECT_THAT( - getpeername(sockfd, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallFailsWithErrno(ENOTCONN)); - } else { - EXPECT_THAT( - getpeername(sockfd, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - } - } -} - -TEST_P(UdpSocketTest, ConnectAny) { ConnectAny(GetParam(), s_, 0); } - -TEST_P(UdpSocketTest, ConnectAnyWithPort) { - auto port = *Port(reinterpret_cast<struct sockaddr_storage*>(addr_[1])); - ConnectAny(GetParam(), s_, port); -} - -void DisconnectAfterConnectAny(AddressFamily family, int sockfd, int port) { - struct sockaddr_storage addr = {}; - - socklen_t addrlen = sizeof(addr); - struct sockaddr_storage baddr = {}; - if (family == AddressFamily::kIpv4) { - auto addr_in = reinterpret_cast<struct sockaddr_in*>(&baddr); - addrlen = sizeof(*addr_in); - addr_in->sin_family = AF_INET; - addr_in->sin_addr.s_addr = htonl(INADDR_ANY); - addr_in->sin_port = port; - } else { - auto addr_in = reinterpret_cast<struct sockaddr_in6*>(&baddr); - addrlen = sizeof(*addr_in); - addr_in->sin6_family = AF_INET6; - addr_in->sin6_port = port; - if (family == AddressFamily::kIpv6) { - addr_in->sin6_addr = IN6ADDR_ANY_INIT; - } else { - TestAddress const& v4_mapped_any = V4MappedAny(); - addr_in->sin6_addr = - reinterpret_cast<const struct sockaddr_in6*>(&v4_mapped_any.addr) - ->sin6_addr; - } - } - - // TODO(b/138658473): gVisor doesn't allow connecting to the zero port. - if (port == 0) { - SKIP_IF(IsRunningOnGvisor()); - } - - ASSERT_THAT(connect(sockfd, reinterpret_cast<sockaddr*>(&baddr), addrlen), - SyscallSucceeds()); - // Now the socket is bound to the loopback address. - - // Disconnect - addrlen = sizeof(addr); - addr.ss_family = AF_UNSPEC; - ASSERT_THAT(connect(sockfd, reinterpret_cast<sockaddr*>(&addr), addrlen), - SyscallSucceeds()); - - // Check that after disconnect the socket is bound to the ANY address. - EXPECT_THAT(getsockname(sockfd, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - if (family == AddressFamily::kIpv4) { - auto addr_out = reinterpret_cast<struct sockaddr_in*>(&addr); - EXPECT_EQ(addrlen, sizeof(*addr_out)); - EXPECT_EQ(addr_out->sin_addr.s_addr, htonl(INADDR_ANY)); - } else { - auto addr_out = reinterpret_cast<struct sockaddr_in6*>(&addr); - EXPECT_EQ(addrlen, sizeof(*addr_out)); - struct in6_addr loopback = IN6ADDR_ANY_INIT; - - EXPECT_EQ(memcmp(&addr_out->sin6_addr, &loopback, sizeof(in6_addr)), 0); - } -} - -TEST_P(UdpSocketTest, DisconnectAfterConnectAny) { - DisconnectAfterConnectAny(GetParam(), s_, 0); -} - -TEST_P(UdpSocketTest, DisconnectAfterConnectAnyWithPort) { - auto port = *Port(reinterpret_cast<struct sockaddr_storage*>(addr_[1])); - DisconnectAfterConnectAny(GetParam(), s_, port); -} - -TEST_P(UdpSocketTest, DisconnectAfterBind) { - ASSERT_THAT(bind(s_, addr_[1], addrlen_), SyscallSucceeds()); - // Connect the socket. - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - - struct sockaddr_storage addr = {}; - addr.ss_family = AF_UNSPEC; - EXPECT_THAT( - connect(s_, reinterpret_cast<sockaddr*>(&addr), sizeof(addr.ss_family)), - SyscallSucceeds()); - - // Check that we're still bound. - socklen_t addrlen = sizeof(addr); - EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - - EXPECT_EQ(addrlen, addrlen_); - EXPECT_EQ(memcmp(&addr, addr_[1], addrlen_), 0); - - addrlen = sizeof(addr); - EXPECT_THAT(getpeername(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallFailsWithErrno(ENOTCONN)); -} - -TEST_P(UdpSocketTest, BindToAnyConnnectToLocalhost) { - struct sockaddr_storage baddr = {}; - auto port = *Port(reinterpret_cast<struct sockaddr_storage*>(addr_[1])); - if (GetParam() == AddressFamily::kIpv4) { - auto addr_in = reinterpret_cast<struct sockaddr_in*>(&baddr); - addr_in->sin_family = AF_INET; - addr_in->sin_port = port; - addr_in->sin_addr.s_addr = htonl(INADDR_ANY); - } else { - auto addr_in = reinterpret_cast<struct sockaddr_in6*>(&baddr); - addr_in->sin6_family = AF_INET6; - addr_in->sin6_port = port; - addr_in->sin6_scope_id = 0; - addr_in->sin6_addr = IN6ADDR_ANY_INIT; - } - ASSERT_THAT(bind(s_, reinterpret_cast<sockaddr*>(&baddr), addrlen_), - SyscallSucceeds()); - // Connect the socket. - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - - struct sockaddr_storage addr = {}; - socklen_t addrlen = sizeof(addr); - EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - - // If the socket is bound to ANY and connected to a loopback address, - // getsockname() has to return the loopback address. - if (GetParam() == AddressFamily::kIpv4) { - auto addr_out = reinterpret_cast<struct sockaddr_in*>(&addr); - EXPECT_EQ(addrlen, sizeof(*addr_out)); - EXPECT_EQ(addr_out->sin_addr.s_addr, htonl(INADDR_LOOPBACK)); - } else { - auto addr_out = reinterpret_cast<struct sockaddr_in6*>(&addr); - struct in6_addr loopback = IN6ADDR_LOOPBACK_INIT; - EXPECT_EQ(addrlen, sizeof(*addr_out)); - EXPECT_EQ(memcmp(&addr_out->sin6_addr, &loopback, sizeof(in6_addr)), 0); - } -} - -TEST_P(UdpSocketTest, DisconnectAfterBindToAny) { - struct sockaddr_storage baddr = {}; - socklen_t addrlen; - auto port = *Port(reinterpret_cast<struct sockaddr_storage*>(addr_[1])); - if (GetParam() == AddressFamily::kIpv4) { - auto addr_in = reinterpret_cast<struct sockaddr_in*>(&baddr); - addr_in->sin_family = AF_INET; - addr_in->sin_port = port; - addr_in->sin_addr.s_addr = htonl(INADDR_ANY); - } else { - auto addr_in = reinterpret_cast<struct sockaddr_in6*>(&baddr); - addr_in->sin6_family = AF_INET6; - addr_in->sin6_port = port; - addr_in->sin6_scope_id = 0; - addr_in->sin6_addr = IN6ADDR_ANY_INIT; - } - ASSERT_THAT(bind(s_, reinterpret_cast<sockaddr*>(&baddr), addrlen_), - SyscallSucceeds()); - // Connect the socket. - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - - struct sockaddr_storage addr = {}; - addr.ss_family = AF_UNSPEC; - EXPECT_THAT( - connect(s_, reinterpret_cast<sockaddr*>(&addr), sizeof(addr.ss_family)), - SyscallSucceeds()); - - // Check that we're still bound. - addrlen = sizeof(addr); - EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - - EXPECT_EQ(addrlen, addrlen_); - EXPECT_EQ(memcmp(&addr, &baddr, addrlen), 0); - - addrlen = sizeof(addr); - EXPECT_THAT(getpeername(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallFailsWithErrno(ENOTCONN)); -} - -TEST_P(UdpSocketTest, Disconnect) { - for (int i = 0; i < 2; i++) { - // Try to connect again. - EXPECT_THAT(connect(s_, addr_[2], addrlen_), SyscallSucceeds()); - - // Check that we're connected to the right peer. - struct sockaddr_storage peer; - socklen_t peerlen = sizeof(peer); - EXPECT_THAT(getpeername(s_, reinterpret_cast<sockaddr*>(&peer), &peerlen), - SyscallSucceeds()); - EXPECT_EQ(peerlen, addrlen_); - EXPECT_EQ(memcmp(&peer, addr_[2], addrlen_), 0); - - // Try to disconnect. - struct sockaddr_storage addr = {}; - addr.ss_family = AF_UNSPEC; - EXPECT_THAT( - connect(s_, reinterpret_cast<sockaddr*>(&addr), sizeof(addr.ss_family)), - SyscallSucceeds()); - - peerlen = sizeof(peer); - EXPECT_THAT(getpeername(s_, reinterpret_cast<sockaddr*>(&peer), &peerlen), - SyscallFailsWithErrno(ENOTCONN)); - - // Check that we're still bound. - socklen_t addrlen = sizeof(addr); - EXPECT_THAT(getsockname(s_, reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceeds()); - EXPECT_EQ(addrlen, addrlen_); - EXPECT_EQ(*Port(&addr), 0); - } -} - -TEST_P(UdpSocketTest, ConnectBadAddress) { - struct sockaddr addr = {}; - addr.sa_family = addr_[0]->sa_family; - ASSERT_THAT(connect(s_, &addr, sizeof(addr.sa_family)), - SyscallFailsWithErrno(EINVAL)); -} - -TEST_P(UdpSocketTest, SendToAddressOtherThanConnected) { - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Send to a different destination than we're connected to. - char buf[512]; - EXPECT_THAT(sendto(s_, buf, sizeof(buf), 0, addr_[1], addrlen_), - SyscallSucceedsWithValue(sizeof(buf))); -} - -TEST_P(UdpSocketTest, ZerolengthWriteAllowed) { - // TODO(gvisor.dev/issue/1202): Hostinet does not support zero length writes. - SKIP_IF(IsRunningWithHostinet()); - - // Bind s_ to loopback:TestPort, and connect to loopback:TestPort+1. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(s_, addr_[1], addrlen_), SyscallSucceeds()); - - // Bind t_ to loopback:TestPort+1. - ASSERT_THAT(bind(t_, addr_[1], addrlen_), SyscallSucceeds()); - - char buf[3]; - // Send zero length packet from s_ to t_. - ASSERT_THAT(write(s_, buf, 0), SyscallSucceedsWithValue(0)); - // Receive the packet. - char received[3]; - EXPECT_THAT(read(t_, received, sizeof(received)), - SyscallSucceedsWithValue(0)); -} - -TEST_P(UdpSocketTest, ZerolengthWriteAllowedNonBlockRead) { - // TODO(gvisor.dev/issue/1202): Hostinet does not support zero length writes. - SKIP_IF(IsRunningWithHostinet()); - - // Bind s_ to loopback:TestPort, and connect to loopback:TestPort+1. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(s_, addr_[1], addrlen_), SyscallSucceeds()); - - // Bind t_ to loopback:TestPort+1. - ASSERT_THAT(bind(t_, addr_[1], addrlen_), SyscallSucceeds()); - - // Set t_ to non-blocking. - int opts = 0; - ASSERT_THAT(opts = fcntl(t_, F_GETFL), SyscallSucceeds()); - ASSERT_THAT(fcntl(t_, F_SETFL, opts | O_NONBLOCK), SyscallSucceeds()); - - char buf[3]; - // Send zero length packet from s_ to t_. - ASSERT_THAT(write(s_, buf, 0), SyscallSucceedsWithValue(0)); - // Receive the packet. - char received[3]; - EXPECT_THAT(read(t_, received, sizeof(received)), - SyscallSucceedsWithValue(0)); - EXPECT_THAT(read(t_, received, sizeof(received)), - SyscallFailsWithErrno(EAGAIN)); -} - -TEST_P(UdpSocketTest, SendAndReceiveNotConnected) { - // Bind s_ to loopback. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Send some data to s_. - char buf[512]; - RandomizeBuffer(buf, sizeof(buf)); - - ASSERT_THAT(sendto(t_, buf, sizeof(buf), 0, addr_[0], addrlen_), - SyscallSucceedsWithValue(sizeof(buf))); - - // Receive the data. - char received[sizeof(buf)]; - EXPECT_THAT(recv(s_, received, sizeof(received), 0), - SyscallSucceedsWithValue(sizeof(received))); - EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); -} - -TEST_P(UdpSocketTest, SendAndReceiveConnected) { - // Bind s_ to loopback:TestPort, and connect to loopback:TestPort+1. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(s_, addr_[1], addrlen_), SyscallSucceeds()); - - // Bind t_ to loopback:TestPort+1. - ASSERT_THAT(bind(t_, addr_[1], addrlen_), SyscallSucceeds()); - - // Send some data from t_ to s_. - char buf[512]; - RandomizeBuffer(buf, sizeof(buf)); - - ASSERT_THAT(sendto(t_, buf, sizeof(buf), 0, addr_[0], addrlen_), - SyscallSucceedsWithValue(sizeof(buf))); - - // Receive the data. - char received[sizeof(buf)]; - EXPECT_THAT(recv(s_, received, sizeof(received), 0), - SyscallSucceedsWithValue(sizeof(received))); - EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); -} - -TEST_P(UdpSocketTest, ReceiveFromNotConnected) { - // Bind s_ to loopback:TestPort, and connect to loopback:TestPort+1. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(s_, addr_[1], addrlen_), SyscallSucceeds()); - - // Bind t_ to loopback:TestPort+2. - ASSERT_THAT(bind(t_, addr_[2], addrlen_), SyscallSucceeds()); - - // Send some data from t_ to s_. - char buf[512]; - ASSERT_THAT(sendto(t_, buf, sizeof(buf), 0, addr_[0], addrlen_), - SyscallSucceedsWithValue(sizeof(buf))); - - // Check that the data isn't_ received because it was sent from a different - // address than we're connected. - EXPECT_THAT(recv(s_, buf, sizeof(buf), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); -} - -TEST_P(UdpSocketTest, ReceiveBeforeConnect) { - // Bind s_ to loopback:TestPort. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Bind t_ to loopback:TestPort+2. - ASSERT_THAT(bind(t_, addr_[2], addrlen_), SyscallSucceeds()); - - // Send some data from t_ to s_. - char buf[512]; - RandomizeBuffer(buf, sizeof(buf)); - - ASSERT_THAT(sendto(t_, buf, sizeof(buf), 0, addr_[0], addrlen_), - SyscallSucceedsWithValue(sizeof(buf))); - - // Connect to loopback:TestPort+1. - ASSERT_THAT(connect(s_, addr_[1], addrlen_), SyscallSucceeds()); - - // Receive the data. It works because it was sent before the connect. - char received[sizeof(buf)]; - EXPECT_THAT(recv(s_, received, sizeof(received), 0), - SyscallSucceedsWithValue(sizeof(received))); - EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); - - // Send again. This time it should not be received. - ASSERT_THAT(sendto(t_, buf, sizeof(buf), 0, addr_[0], addrlen_), - SyscallSucceedsWithValue(sizeof(buf))); - - EXPECT_THAT(recv(s_, buf, sizeof(buf), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); -} - -TEST_P(UdpSocketTest, ReceiveFrom) { - // Bind s_ to loopback:TestPort, and connect to loopback:TestPort+1. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(s_, addr_[1], addrlen_), SyscallSucceeds()); - - // Bind t_ to loopback:TestPort+1. - ASSERT_THAT(bind(t_, addr_[1], addrlen_), SyscallSucceeds()); - - // Send some data from t_ to s_. - char buf[512]; - RandomizeBuffer(buf, sizeof(buf)); - - ASSERT_THAT(sendto(t_, buf, sizeof(buf), 0, addr_[0], addrlen_), - SyscallSucceedsWithValue(sizeof(buf))); - - // Receive the data and sender address. - char received[sizeof(buf)]; - struct sockaddr_storage addr; - socklen_t addrlen = sizeof(addr); - EXPECT_THAT(recvfrom(s_, received, sizeof(received), 0, - reinterpret_cast<sockaddr*>(&addr), &addrlen), - SyscallSucceedsWithValue(sizeof(received))); - EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); - EXPECT_EQ(addrlen, addrlen_); - EXPECT_EQ(memcmp(&addr, addr_[1], addrlen_), 0); -} - -TEST_P(UdpSocketTest, Listen) { - ASSERT_THAT(listen(s_, SOMAXCONN), SyscallFailsWithErrno(EOPNOTSUPP)); -} - -TEST_P(UdpSocketTest, Accept) { - ASSERT_THAT(accept(s_, nullptr, nullptr), SyscallFailsWithErrno(EOPNOTSUPP)); -} - -// This test validates that a read shutdown with pending data allows the read -// to proceed with the data before returning EAGAIN. -TEST_P(UdpSocketTest, ReadShutdownNonblockPendingData) { - char received[512]; - - // Bind t_ to loopback:TestPort+2. - ASSERT_THAT(bind(t_, addr_[2], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(t_, addr_[1], addrlen_), SyscallSucceeds()); - - // Connect the socket, then try to shutdown again. - ASSERT_THAT(bind(s_, addr_[1], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(s_, addr_[2], addrlen_), SyscallSucceeds()); - - // Verify that we get EWOULDBLOCK when there is nothing to read. - EXPECT_THAT(recv(s_, received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); - - const char* buf = "abc"; - EXPECT_THAT(write(t_, buf, 3), SyscallSucceedsWithValue(3)); - - int opts = 0; - ASSERT_THAT(opts = fcntl(s_, F_GETFL), SyscallSucceeds()); - ASSERT_THAT(fcntl(s_, F_SETFL, opts | O_NONBLOCK), SyscallSucceeds()); - ASSERT_THAT(opts = fcntl(s_, F_GETFL), SyscallSucceeds()); - ASSERT_NE(opts & O_NONBLOCK, 0); - - EXPECT_THAT(shutdown(s_, SHUT_RD), SyscallSucceeds()); - - // We should get the data even though read has been shutdown. - EXPECT_THAT(recv(s_, received, 2, 0), SyscallSucceedsWithValue(2)); - - // Because we read less than the entire packet length, since it's a packet - // based socket any subsequent reads should return EWOULDBLOCK. - EXPECT_THAT(recv(s_, received, 1, 0), SyscallFailsWithErrno(EWOULDBLOCK)); -} - -// This test is validating that even after a socket is shutdown if it's -// reconnected it will reset the shutdown state. -TEST_P(UdpSocketTest, ReadShutdownSameSocketResetsShutdownState) { - char received[512]; - EXPECT_THAT(recv(s_, received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); - - EXPECT_THAT(shutdown(s_, SHUT_RD), SyscallFailsWithErrno(ENOTCONN)); - - EXPECT_THAT(recv(s_, received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); - - // Connect the socket, then try to shutdown again. - ASSERT_THAT(bind(s_, addr_[1], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(s_, addr_[2], addrlen_), SyscallSucceeds()); - - EXPECT_THAT(recv(s_, received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); -} - -TEST_P(UdpSocketTest, ReadShutdown) { - // TODO(gvisor.dev/issue/1202): Calling recv() after shutdown without - // MSG_DONTWAIT blocks indefinitely. - SKIP_IF(IsRunningWithHostinet()); - - char received[512]; - EXPECT_THAT(recv(s_, received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); - - EXPECT_THAT(shutdown(s_, SHUT_RD), SyscallFailsWithErrno(ENOTCONN)); - - EXPECT_THAT(recv(s_, received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); - - // Connect the socket, then try to shutdown again. - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - - EXPECT_THAT(recv(s_, received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); - - EXPECT_THAT(shutdown(s_, SHUT_RD), SyscallSucceeds()); - - EXPECT_THAT(recv(s_, received, sizeof(received), 0), - SyscallSucceedsWithValue(0)); -} - -TEST_P(UdpSocketTest, ReadShutdownDifferentThread) { - // TODO(gvisor.dev/issue/1202): Calling recv() after shutdown without - // MSG_DONTWAIT blocks indefinitely. - SKIP_IF(IsRunningWithHostinet()); - - char received[512]; - EXPECT_THAT(recv(s_, received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); - - // Connect the socket, then shutdown from another thread. - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - - EXPECT_THAT(recv(s_, received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); - - ScopedThread t([&] { - absl::SleepFor(absl::Milliseconds(200)); - EXPECT_THAT(shutdown(this->s_, SHUT_RD), SyscallSucceeds()); - }); - EXPECT_THAT(RetryEINTR(recv)(s_, received, sizeof(received), 0), - SyscallSucceedsWithValue(0)); - t.Join(); - - EXPECT_THAT(RetryEINTR(recv)(s_, received, sizeof(received), 0), - SyscallSucceedsWithValue(0)); -} - -TEST_P(UdpSocketTest, WriteShutdown) { - EXPECT_THAT(shutdown(s_, SHUT_WR), SyscallFailsWithErrno(ENOTCONN)); - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - EXPECT_THAT(shutdown(s_, SHUT_WR), SyscallSucceeds()); -} - -TEST_P(UdpSocketTest, SynchronousReceive) { - // Bind s_ to loopback. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Send some data to s_ from another thread. - char buf[512]; - RandomizeBuffer(buf, sizeof(buf)); - - // Receive the data prior to actually starting the other thread. - char received[512]; - EXPECT_THAT(RetryEINTR(recv)(s_, received, sizeof(received), MSG_DONTWAIT), - SyscallFailsWithErrno(EWOULDBLOCK)); - - // Start the thread. - ScopedThread t([&] { - absl::SleepFor(absl::Milliseconds(200)); - ASSERT_THAT( - sendto(this->t_, buf, sizeof(buf), 0, this->addr_[0], this->addrlen_), - SyscallSucceedsWithValue(sizeof(buf))); - }); - - EXPECT_THAT(RetryEINTR(recv)(s_, received, sizeof(received), 0), - SyscallSucceedsWithValue(512)); - EXPECT_EQ(memcmp(buf, received, sizeof(buf)), 0); -} - -TEST_P(UdpSocketTest, BoundaryPreserved_SendRecv) { - // Bind s_ to loopback:TestPort. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Send 3 packets from t_ to s_. - constexpr int psize = 100; - char buf[3 * psize]; - RandomizeBuffer(buf, sizeof(buf)); - - for (int i = 0; i < 3; ++i) { - ASSERT_THAT(sendto(t_, buf + i * psize, psize, 0, addr_[0], addrlen_), - SyscallSucceedsWithValue(psize)); - } - - // Receive the data as 3 separate packets. - char received[6 * psize]; - for (int i = 0; i < 3; ++i) { - EXPECT_THAT(recv(s_, received + i * psize, 3 * psize, 0), - SyscallSucceedsWithValue(psize)); - } - EXPECT_EQ(memcmp(buf, received, 3 * psize), 0); -} - -TEST_P(UdpSocketTest, BoundaryPreserved_WritevReadv) { - // Bind s_ to loopback:TestPort. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Direct writes from t_ to s_. - ASSERT_THAT(connect(t_, addr_[0], addrlen_), SyscallSucceeds()); - - // Send 2 packets from t_ to s_, where each packet's data consists of 2 - // discontiguous iovecs. - constexpr size_t kPieceSize = 100; - char buf[4 * kPieceSize]; - RandomizeBuffer(buf, sizeof(buf)); - - for (int i = 0; i < 2; i++) { - struct iovec iov[2]; - for (int j = 0; j < 2; j++) { - iov[j].iov_base = reinterpret_cast<void*>( - reinterpret_cast<uintptr_t>(buf) + (i + 2 * j) * kPieceSize); - iov[j].iov_len = kPieceSize; - } - ASSERT_THAT(writev(t_, iov, 2), SyscallSucceedsWithValue(2 * kPieceSize)); - } - - // Receive the data as 2 separate packets. - char received[6 * kPieceSize]; - for (int i = 0; i < 2; i++) { - struct iovec iov[3]; - for (int j = 0; j < 3; j++) { - iov[j].iov_base = reinterpret_cast<void*>( - reinterpret_cast<uintptr_t>(received) + (i + 2 * j) * kPieceSize); - iov[j].iov_len = kPieceSize; - } - ASSERT_THAT(readv(s_, iov, 3), SyscallSucceedsWithValue(2 * kPieceSize)); - } - EXPECT_EQ(memcmp(buf, received, 4 * kPieceSize), 0); -} - -TEST_P(UdpSocketTest, BoundaryPreserved_SendMsgRecvMsg) { - // Bind s_ to loopback:TestPort. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Send 2 packets from t_ to s_, where each packet's data consists of 2 - // discontiguous iovecs. - constexpr size_t kPieceSize = 100; - char buf[4 * kPieceSize]; - RandomizeBuffer(buf, sizeof(buf)); - - for (int i = 0; i < 2; i++) { - struct iovec iov[2]; - for (int j = 0; j < 2; j++) { - iov[j].iov_base = reinterpret_cast<void*>( - reinterpret_cast<uintptr_t>(buf) + (i + 2 * j) * kPieceSize); - iov[j].iov_len = kPieceSize; - } - struct msghdr msg = {}; - msg.msg_name = addr_[0]; - msg.msg_namelen = addrlen_; - msg.msg_iov = iov; - msg.msg_iovlen = 2; - ASSERT_THAT(sendmsg(t_, &msg, 0), SyscallSucceedsWithValue(2 * kPieceSize)); - } - - // Receive the data as 2 separate packets. - char received[6 * kPieceSize]; - for (int i = 0; i < 2; i++) { - struct iovec iov[3]; - for (int j = 0; j < 3; j++) { - iov[j].iov_base = reinterpret_cast<void*>( - reinterpret_cast<uintptr_t>(received) + (i + 2 * j) * kPieceSize); - iov[j].iov_len = kPieceSize; - } - struct msghdr msg = {}; - msg.msg_iov = iov; - msg.msg_iovlen = 3; - ASSERT_THAT(recvmsg(s_, &msg, 0), SyscallSucceedsWithValue(2 * kPieceSize)); - } - EXPECT_EQ(memcmp(buf, received, 4 * kPieceSize), 0); -} - -TEST_P(UdpSocketTest, FIONREADShutdown) { - int n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - - // A UDP socket must be connected before it can be shutdown. - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - - n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - - EXPECT_THAT(shutdown(s_, SHUT_RD), SyscallSucceeds()); - - n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); -} - -TEST_P(UdpSocketTest, FIONREADWriteShutdown) { - int n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - - // Bind s_ to loopback:TestPort. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // A UDP socket must be connected before it can be shutdown. - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - - n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - - const char str[] = "abc"; - ASSERT_THAT(send(s_, str, sizeof(str), 0), - SyscallSucceedsWithValue(sizeof(str))); - - n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, sizeof(str)); - - EXPECT_THAT(shutdown(s_, SHUT_RD), SyscallSucceeds()); - - n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, sizeof(str)); -} - -TEST_P(UdpSocketTest, Fionread) { - // Bind s_ to loopback:TestPort. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Check that the bound socket with an empty buffer reports an empty first - // packet. - int n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - - // Send 3 packets from t_ to s_. - constexpr int psize = 100; - char buf[3 * psize]; - RandomizeBuffer(buf, sizeof(buf)); - - for (int i = 0; i < 3; ++i) { - ASSERT_THAT(sendto(t_, buf + i * psize, psize, 0, addr_[0], addrlen_), - SyscallSucceedsWithValue(psize)); - - // Check that regardless of how many packets are in the queue, the size - // reported is that of a single packet. - n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, psize); - } -} - -TEST_P(UdpSocketTest, FIONREADZeroLengthPacket) { - // Bind s_ to loopback:TestPort. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // Check that the bound socket with an empty buffer reports an empty first - // packet. - int n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - - // Send 3 packets from t_ to s_. - constexpr int psize = 100; - char buf[3 * psize]; - RandomizeBuffer(buf, sizeof(buf)); - - for (int i = 0; i < 3; ++i) { - ASSERT_THAT(sendto(t_, buf + i * psize, 0, 0, addr_[0], addrlen_), - SyscallSucceedsWithValue(0)); - - // Check that regardless of how many packets are in the queue, the size - // reported is that of a single packet. - n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - } -} - -TEST_P(UdpSocketTest, FIONREADZeroLengthWriteShutdown) { - int n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - - // Bind s_ to loopback:TestPort. - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - - // A UDP socket must be connected before it can be shutdown. - ASSERT_THAT(connect(s_, addr_[0], addrlen_), SyscallSucceeds()); - - n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - - const char str[] = "abc"; - ASSERT_THAT(send(s_, str, 0, 0), SyscallSucceedsWithValue(0)); - - n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); - - EXPECT_THAT(shutdown(s_, SHUT_RD), SyscallSucceeds()); - - n = -1; - EXPECT_THAT(ioctl(s_, FIONREAD, &n), SyscallSucceedsWithValue(0)); - EXPECT_EQ(n, 0); -} - -TEST_P(UdpSocketTest, SoTimestampOffByDefault) { - // TODO(gvisor.dev/issue/1202): SO_TIMESTAMP socket option not supported by - // hostinet. - SKIP_IF(IsRunningWithHostinet()); - - int v = -1; - socklen_t optlen = sizeof(v); - ASSERT_THAT(getsockopt(s_, SOL_SOCKET, SO_TIMESTAMP, &v, &optlen), - SyscallSucceeds()); - ASSERT_EQ(v, kSockOptOff); - ASSERT_EQ(optlen, sizeof(v)); -} - -TEST_P(UdpSocketTest, SoTimestamp) { - // TODO(gvisor.dev/issue/1202): ioctl() and SO_TIMESTAMP socket option are not - // supported by hostinet. - SKIP_IF(IsRunningWithHostinet()); - - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(t_, addr_[0], addrlen_), SyscallSucceeds()); - - int v = 1; - ASSERT_THAT(setsockopt(s_, SOL_SOCKET, SO_TIMESTAMP, &v, sizeof(v)), - SyscallSucceeds()); - - char buf[3]; - // Send zero length packet from t_ to s_. - ASSERT_THAT(RetryEINTR(write)(t_, buf, 0), SyscallSucceedsWithValue(0)); - - char cmsgbuf[CMSG_SPACE(sizeof(struct timeval))]; - msghdr msg; - memset(&msg, 0, sizeof(msg)); - iovec iov; - memset(&iov, 0, sizeof(iov)); - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - msg.msg_control = cmsgbuf; - msg.msg_controllen = sizeof(cmsgbuf); - - ASSERT_THAT(RetryEINTR(recvmsg)(s_, &msg, 0), SyscallSucceedsWithValue(0)); - - struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg); - ASSERT_NE(cmsg, nullptr); - ASSERT_EQ(cmsg->cmsg_level, SOL_SOCKET); - ASSERT_EQ(cmsg->cmsg_type, SO_TIMESTAMP); - ASSERT_EQ(cmsg->cmsg_len, CMSG_LEN(sizeof(struct timeval))); - - struct timeval tv = {}; - memcpy(&tv, CMSG_DATA(cmsg), sizeof(struct timeval)); - - ASSERT_TRUE(tv.tv_sec != 0 || tv.tv_usec != 0); - - // There should be nothing to get via ioctl. - ASSERT_THAT(ioctl(s_, SIOCGSTAMP, &tv), SyscallFailsWithErrno(ENOENT)); -} - -TEST_P(UdpSocketTest, WriteShutdownNotConnected) { - EXPECT_THAT(shutdown(s_, SHUT_WR), SyscallFailsWithErrno(ENOTCONN)); -} - -TEST_P(UdpSocketTest, TimestampIoctl) { - // TODO(gvisor.dev/issue/1202): ioctl() is not supported by hostinet. - SKIP_IF(IsRunningWithHostinet()); - - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(t_, addr_[0], addrlen_), SyscallSucceeds()); - - char buf[3]; - // Send packet from t_ to s_. - ASSERT_THAT(RetryEINTR(write)(t_, buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - - // There should be no control messages. - char recv_buf[sizeof(buf)]; - ASSERT_NO_FATAL_FAILURE(RecvNoCmsg(s_, recv_buf, sizeof(recv_buf))); - - // A nonzero timeval should be available via ioctl. - struct timeval tv = {}; - ASSERT_THAT(ioctl(s_, SIOCGSTAMP, &tv), SyscallSucceeds()); - ASSERT_TRUE(tv.tv_sec != 0 || tv.tv_usec != 0); -} - -TEST_P(UdpSocketTest, TimestampIoctlNothingRead) { - // TODO(gvisor.dev/issue/1202): ioctl() is not supported by hostinet. - SKIP_IF(IsRunningWithHostinet()); - - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(t_, addr_[0], addrlen_), SyscallSucceeds()); - - struct timeval tv = {}; - ASSERT_THAT(ioctl(s_, SIOCGSTAMP, &tv), SyscallFailsWithErrno(ENOENT)); -} - -// Test that the timestamp accessed via SIOCGSTAMP is still accessible after -// SO_TIMESTAMP is enabled and used to retrieve a timestamp. -TEST_P(UdpSocketTest, TimestampIoctlPersistence) { - // TODO(gvisor.dev/issue/1202): ioctl() and SO_TIMESTAMP socket option are not - // supported by hostinet. - SKIP_IF(IsRunningWithHostinet()); - - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(t_, addr_[0], addrlen_), SyscallSucceeds()); - - char buf[3]; - // Send packet from t_ to s_. - ASSERT_THAT(RetryEINTR(write)(t_, buf, sizeof(buf)), - SyscallSucceedsWithValue(sizeof(buf))); - ASSERT_THAT(RetryEINTR(write)(t_, buf, 0), SyscallSucceedsWithValue(0)); - - // There should be no control messages. - char recv_buf[sizeof(buf)]; - ASSERT_NO_FATAL_FAILURE(RecvNoCmsg(s_, recv_buf, sizeof(recv_buf))); - - // A nonzero timeval should be available via ioctl. - struct timeval tv = {}; - ASSERT_THAT(ioctl(s_, SIOCGSTAMP, &tv), SyscallSucceeds()); - ASSERT_TRUE(tv.tv_sec != 0 || tv.tv_usec != 0); - - // Enable SO_TIMESTAMP and send a message. - int v = 1; - EXPECT_THAT(setsockopt(s_, SOL_SOCKET, SO_TIMESTAMP, &v, sizeof(v)), - SyscallSucceeds()); - ASSERT_THAT(RetryEINTR(write)(t_, buf, 0), SyscallSucceedsWithValue(0)); - - // There should be a message for SO_TIMESTAMP. - char cmsgbuf[CMSG_SPACE(sizeof(struct timeval))]; - msghdr msg = {}; - iovec iov = {}; - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - msg.msg_control = cmsgbuf; - msg.msg_controllen = sizeof(cmsgbuf); - ASSERT_THAT(RetryEINTR(recvmsg)(s_, &msg, 0), SyscallSucceedsWithValue(0)); - struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg); - ASSERT_NE(cmsg, nullptr); - - // The ioctl should return the exact same values as before. - struct timeval tv2 = {}; - ASSERT_THAT(ioctl(s_, SIOCGSTAMP, &tv2), SyscallSucceeds()); - ASSERT_EQ(tv.tv_sec, tv2.tv_sec); - ASSERT_EQ(tv.tv_usec, tv2.tv_usec); -} - -// Test that a socket with IP_TOS or IPV6_TCLASS set will set the TOS byte on -// outgoing packets, and that a receiving socket with IP_RECVTOS or -// IPV6_RECVTCLASS will create the corresponding control message. -TEST_P(UdpSocketTest, SetAndReceiveTOS) { - // TODO(b/144868438): IPV6_RECVTCLASS not supported for netstack. - SKIP_IF((GetParam() != AddressFamily::kIpv4) && IsRunningOnGvisor() && - !IsRunningWithHostinet()); - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(t_, addr_[0], addrlen_), SyscallSucceeds()); - - // Allow socket to receive control message. - int recv_level = SOL_IP; - int recv_type = IP_RECVTOS; - if (GetParam() != AddressFamily::kIpv4) { - recv_level = SOL_IPV6; - recv_type = IPV6_RECVTCLASS; - } - ASSERT_THAT( - setsockopt(s_, recv_level, recv_type, &kSockOptOn, sizeof(kSockOptOn)), - SyscallSucceeds()); - - // Set socket TOS. - int sent_level = recv_level; - int sent_type = IP_TOS; - if (sent_level == SOL_IPV6) { - sent_type = IPV6_TCLASS; - } - int sent_tos = IPTOS_LOWDELAY; // Choose some TOS value. - ASSERT_THAT( - setsockopt(t_, sent_level, sent_type, &sent_tos, sizeof(sent_tos)), - SyscallSucceeds()); - - // Prepare message to send. - constexpr size_t kDataLength = 1024; - struct msghdr sent_msg = {}; - struct iovec sent_iov = {}; - char sent_data[kDataLength]; - sent_iov.iov_base = &sent_data[0]; - sent_iov.iov_len = kDataLength; - sent_msg.msg_iov = &sent_iov; - sent_msg.msg_iovlen = 1; - - ASSERT_THAT(RetryEINTR(sendmsg)(t_, &sent_msg, 0), - SyscallSucceedsWithValue(kDataLength)); - - // Receive message. - struct msghdr received_msg = {}; - struct iovec received_iov = {}; - char received_data[kDataLength]; - received_iov.iov_base = &received_data[0]; - received_iov.iov_len = kDataLength; - received_msg.msg_iov = &received_iov; - received_msg.msg_iovlen = 1; - size_t cmsg_data_len = sizeof(int8_t); - if (sent_type == IPV6_TCLASS) { - cmsg_data_len = sizeof(int); - } - std::vector<char> received_cmsgbuf(CMSG_SPACE(cmsg_data_len)); - received_msg.msg_control = &received_cmsgbuf[0]; - received_msg.msg_controllen = received_cmsgbuf.size(); - ASSERT_THAT(RetryEINTR(recvmsg)(s_, &received_msg, 0), - SyscallSucceedsWithValue(kDataLength)); - - struct cmsghdr* cmsg = CMSG_FIRSTHDR(&received_msg); - ASSERT_NE(cmsg, nullptr); - EXPECT_EQ(cmsg->cmsg_len, CMSG_LEN(cmsg_data_len)); - EXPECT_EQ(cmsg->cmsg_level, sent_level); - EXPECT_EQ(cmsg->cmsg_type, sent_type); - int8_t received_tos = 0; - memcpy(&received_tos, CMSG_DATA(cmsg), sizeof(received_tos)); - EXPECT_EQ(received_tos, sent_tos); -} - -// Test that sendmsg with IP_TOS and IPV6_TCLASS control messages will set the -// TOS byte on outgoing packets, and that a receiving socket with IP_RECVTOS or -// IPV6_RECVTCLASS will create the corresponding control message. -TEST_P(UdpSocketTest, SendAndReceiveTOS) { - // TODO(b/144868438): IPV6_RECVTCLASS not supported for netstack. - // TODO(b/146661005): Setting TOS via cmsg not supported for netstack. - SKIP_IF(IsRunningOnGvisor() && !IsRunningWithHostinet()); - ASSERT_THAT(bind(s_, addr_[0], addrlen_), SyscallSucceeds()); - ASSERT_THAT(connect(t_, addr_[0], addrlen_), SyscallSucceeds()); - - // Allow socket to receive control message. - int recv_level = SOL_IP; - int recv_type = IP_RECVTOS; - if (GetParam() != AddressFamily::kIpv4) { - recv_level = SOL_IPV6; - recv_type = IPV6_RECVTCLASS; - } - int recv_opt = kSockOptOn; - ASSERT_THAT( - setsockopt(s_, recv_level, recv_type, &recv_opt, sizeof(recv_opt)), - SyscallSucceeds()); - - // Prepare message to send. - constexpr size_t kDataLength = 1024; - int sent_level = recv_level; - int sent_type = IP_TOS; - int sent_tos = IPTOS_LOWDELAY; // Choose some TOS value. - - struct msghdr sent_msg = {}; - struct iovec sent_iov = {}; - char sent_data[kDataLength]; - sent_iov.iov_base = &sent_data[0]; - sent_iov.iov_len = kDataLength; - sent_msg.msg_iov = &sent_iov; - sent_msg.msg_iovlen = 1; - size_t cmsg_data_len = sizeof(int8_t); - if (sent_level == SOL_IPV6) { - sent_type = IPV6_TCLASS; - cmsg_data_len = sizeof(int); - } - std::vector<char> sent_cmsgbuf(CMSG_SPACE(cmsg_data_len)); - sent_msg.msg_control = &sent_cmsgbuf[0]; - sent_msg.msg_controllen = CMSG_LEN(cmsg_data_len); - - // Manually add control message. - struct cmsghdr* sent_cmsg = CMSG_FIRSTHDR(&sent_msg); - sent_cmsg->cmsg_len = CMSG_LEN(cmsg_data_len); - sent_cmsg->cmsg_level = sent_level; - sent_cmsg->cmsg_type = sent_type; - *(int8_t*)CMSG_DATA(sent_cmsg) = sent_tos; - - ASSERT_THAT(RetryEINTR(sendmsg)(t_, &sent_msg, 0), - SyscallSucceedsWithValue(kDataLength)); - - // Receive message. - struct msghdr received_msg = {}; - struct iovec received_iov = {}; - char received_data[kDataLength]; - received_iov.iov_base = &received_data[0]; - received_iov.iov_len = kDataLength; - received_msg.msg_iov = &received_iov; - received_msg.msg_iovlen = 1; - std::vector<char> received_cmsgbuf(CMSG_SPACE(cmsg_data_len)); - received_msg.msg_control = &received_cmsgbuf[0]; - received_msg.msg_controllen = CMSG_LEN(cmsg_data_len); - ASSERT_THAT(RetryEINTR(recvmsg)(s_, &received_msg, 0), - SyscallSucceedsWithValue(kDataLength)); - - struct cmsghdr* cmsg = CMSG_FIRSTHDR(&received_msg); - ASSERT_NE(cmsg, nullptr); - EXPECT_EQ(cmsg->cmsg_len, CMSG_LEN(cmsg_data_len)); - EXPECT_EQ(cmsg->cmsg_level, sent_level); - EXPECT_EQ(cmsg->cmsg_type, sent_type); - int8_t received_tos = 0; - memcpy(&received_tos, CMSG_DATA(cmsg), sizeof(received_tos)); - EXPECT_EQ(received_tos, sent_tos); -} - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/udp_socket_test_cases.h b/test/syscalls/linux/udp_socket_test_cases.h deleted file mode 100644 index 2fd79d99e..000000000 --- a/test/syscalls/linux/udp_socket_test_cases.h +++ /dev/null @@ -1,74 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef THIRD_PARTY_GOLANG_GVISOR_TEST_SYSCALLS_LINUX_SOCKET_IPV4_UDP_UNBOUND_H_ -#define THIRD_PARTY_GOLANG_GVISOR_TEST_SYSCALLS_LINUX_SOCKET_IPV4_UDP_UNBOUND_H_ - -#include "gtest/gtest.h" -#include "test/syscalls/linux/socket_test_util.h" - -namespace gvisor { -namespace testing { - -// The initial port to be be used on gvisor. -constexpr int TestPort = 40000; - -// Fixture for tests parameterized by the address family to use (AF_INET and -// AF_INET6) when creating sockets. -class UdpSocketTest - : public ::testing::TestWithParam<gvisor::testing::AddressFamily> { - protected: - // Creates two sockets that will be used by test cases. - void SetUp() override; - - // Closes the sockets created by SetUp(). - void TearDown() override { - EXPECT_THAT(close(s_), SyscallSucceeds()); - EXPECT_THAT(close(t_), SyscallSucceeds()); - - for (size_t i = 0; i < ABSL_ARRAYSIZE(ports_); ++i) { - ASSERT_NO_ERRNO(FreeAvailablePort(ports_[i])); - } - } - - // First UDP socket. - int s_; - - // Second UDP socket. - int t_; - - // The length of the socket address. - socklen_t addrlen_; - - // Initialized address pointing to loopback and port TestPort+i. - struct sockaddr* addr_[3]; - - // Initialize "any" address. - struct sockaddr* anyaddr_; - - // Used ports. - int ports_[3]; - - private: - // Storage for the loopback addresses. - struct sockaddr_storage addr_storage_[3]; - - // Storage for the "any" address. - struct sockaddr_storage anyaddr_storage_; -}; - -} // namespace testing -} // namespace gvisor - -#endif // THIRD_PARTY_GOLANG_GVISOR_TEST_SYSCALLS_LINUX_SOCKET_IPV4_UDP_UNBOUND_H_ diff --git a/test/syscalls/linux/uidgid.cc b/test/syscalls/linux/uidgid.cc deleted file mode 100644 index 6218fbce1..000000000 --- a/test/syscalls/linux/uidgid.cc +++ /dev/null @@ -1,255 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <grp.h> -#include <sys/types.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "absl/flags/flag.h" -#include "absl/strings/str_cat.h" -#include "absl/strings/str_join.h" -#include "test/util/capability_util.h" -#include "test/util/posix_error.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" -#include "test/util/uid_util.h" - -ABSL_FLAG(int32_t, scratch_uid1, 65534, "first scratch UID"); -ABSL_FLAG(int32_t, scratch_uid2, 65533, "second scratch UID"); -ABSL_FLAG(int32_t, scratch_gid1, 65534, "first scratch GID"); -ABSL_FLAG(int32_t, scratch_gid2, 65533, "second scratch GID"); - -using ::testing::UnorderedElementsAreArray; - -namespace gvisor { -namespace testing { - -namespace { - -TEST(UidGidTest, Getuid) { - uid_t ruid, euid, suid; - EXPECT_THAT(getresuid(&ruid, &euid, &suid), SyscallSucceeds()); - EXPECT_THAT(getuid(), SyscallSucceedsWithValue(ruid)); - EXPECT_THAT(geteuid(), SyscallSucceedsWithValue(euid)); -} - -TEST(UidGidTest, Getgid) { - gid_t rgid, egid, sgid; - EXPECT_THAT(getresgid(&rgid, &egid, &sgid), SyscallSucceeds()); - EXPECT_THAT(getgid(), SyscallSucceedsWithValue(rgid)); - EXPECT_THAT(getegid(), SyscallSucceedsWithValue(egid)); -} - -TEST(UidGidTest, Getgroups) { - // "If size is zero, list is not modified, but the total number of - // supplementary group IDs for the process is returned." - getgroups(2) - int nr_groups; - ASSERT_THAT(nr_groups = getgroups(0, nullptr), SyscallSucceeds()); - std::vector<gid_t> list(nr_groups); - EXPECT_THAT(getgroups(list.size(), list.data()), SyscallSucceeds()); - - // "EINVAL: size is less than the number of supplementary group IDs, but is - // not zero." - EXPECT_THAT(getgroups(-1, nullptr), SyscallFailsWithErrno(EINVAL)); - - // Testing for EFAULT requires actually having groups, which isn't guaranteed - // here; see the setgroups test below. -} - -// Checks that the calling process' real/effective/saved user IDs are -// ruid/euid/suid respectively. -PosixError CheckUIDs(uid_t ruid, uid_t euid, uid_t suid) { - uid_t actual_ruid, actual_euid, actual_suid; - int rc = getresuid(&actual_ruid, &actual_euid, &actual_suid); - MaybeSave(); - if (rc < 0) { - return PosixError(errno, "getresuid"); - } - if (ruid != actual_ruid || euid != actual_euid || suid != actual_suid) { - return PosixError( - EPERM, absl::StrCat( - "incorrect user IDs: got (", - absl::StrJoin({actual_ruid, actual_euid, actual_suid}, ", "), - ", wanted (", absl::StrJoin({ruid, euid, suid}, ", "), ")")); - } - return NoError(); -} - -PosixError CheckGIDs(gid_t rgid, gid_t egid, gid_t sgid) { - gid_t actual_rgid, actual_egid, actual_sgid; - int rc = getresgid(&actual_rgid, &actual_egid, &actual_sgid); - MaybeSave(); - if (rc < 0) { - return PosixError(errno, "getresgid"); - } - if (rgid != actual_rgid || egid != actual_egid || sgid != actual_sgid) { - return PosixError( - EPERM, absl::StrCat( - "incorrect group IDs: got (", - absl::StrJoin({actual_rgid, actual_egid, actual_sgid}, ", "), - ", wanted (", absl::StrJoin({rgid, egid, sgid}, ", "), ")")); - } - return NoError(); -} - -// N.B. These tests may break horribly unless run via a gVisor test runner, -// because changing UID in one test may forfeit permissions required by other -// tests. (The test runner runs each test in a separate process.) - -TEST(UidGidRootTest, Setuid) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(IsRoot())); - - // Do setuid in a separate thread so that after finishing this test, the - // process can still open files the test harness created before starting this - // test. Otherwise, the files are created by root (UID before the test), but - // cannot be opened by the `uid` set below after the test. After calling - // setuid(non-zero-UID), there is no way to get root privileges back. - ScopedThread([&] { - // Use syscall instead of glibc setuid wrapper because we want this setuid - // call to only apply to this task. POSIX threads, however, require that all - // threads have the same UIDs, so using the setuid wrapper sets all threads' - // real UID. - EXPECT_THAT(syscall(SYS_setuid, -1), SyscallFailsWithErrno(EINVAL)); - - const uid_t uid = absl::GetFlag(FLAGS_scratch_uid1); - EXPECT_THAT(syscall(SYS_setuid, uid), SyscallSucceeds()); - // "If the effective UID of the caller is root (more precisely: if the - // caller has the CAP_SETUID capability), the real UID and saved set-user-ID - // are also set." - setuid(2) - EXPECT_NO_ERRNO(CheckUIDs(uid, uid, uid)); - }); -} - -TEST(UidGidRootTest, Setgid) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(IsRoot())); - - EXPECT_THAT(setgid(-1), SyscallFailsWithErrno(EINVAL)); - - const gid_t gid = absl::GetFlag(FLAGS_scratch_gid1); - ASSERT_THAT(setgid(gid), SyscallSucceeds()); - EXPECT_NO_ERRNO(CheckGIDs(gid, gid, gid)); -} - -TEST(UidGidRootTest, SetgidNotFromThreadGroupLeader) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(IsRoot())); - - const gid_t gid = absl::GetFlag(FLAGS_scratch_gid1); - // NOTE(b/64676707): Do setgid in a separate thread so that we can test if - // info.si_pid is set correctly. - ScopedThread([gid] { ASSERT_THAT(setgid(gid), SyscallSucceeds()); }); - EXPECT_NO_ERRNO(CheckGIDs(gid, gid, gid)); -} - -TEST(UidGidRootTest, Setreuid) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(IsRoot())); - - // "Supplying a value of -1 for either the real or effective user ID forces - // the system to leave that ID unchanged." - setreuid(2) - EXPECT_THAT(setreuid(-1, -1), SyscallSucceeds()); - EXPECT_NO_ERRNO(CheckUIDs(0, 0, 0)); - - // Do setuid in a separate thread so that after finishing this test, the - // process can still open files the test harness created before starting this - // test. Otherwise, the files are created by root (UID before the test), but - // cannot be opened by the `uid` set below after the test. After calling - // setuid(non-zero-UID), there is no way to get root privileges back. - ScopedThread([&] { - const uid_t ruid = absl::GetFlag(FLAGS_scratch_uid1); - const uid_t euid = absl::GetFlag(FLAGS_scratch_uid2); - - // Use syscall instead of glibc setuid wrapper because we want this setuid - // call to only apply to this task. posix threads, however, require that all - // threads have the same UIDs, so using the setuid wrapper sets all threads' - // real UID. - EXPECT_THAT(syscall(SYS_setreuid, ruid, euid), SyscallSucceeds()); - - // "If the real user ID is set or the effective user ID is set to a value - // not equal to the previous real user ID, the saved set-user-ID will be set - // to the new effective user ID." - setreuid(2) - EXPECT_NO_ERRNO(CheckUIDs(ruid, euid, euid)); - }); -} - -TEST(UidGidRootTest, Setregid) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(IsRoot())); - - EXPECT_THAT(setregid(-1, -1), SyscallSucceeds()); - EXPECT_NO_ERRNO(CheckGIDs(0, 0, 0)); - - const gid_t rgid = absl::GetFlag(FLAGS_scratch_gid1); - const gid_t egid = absl::GetFlag(FLAGS_scratch_gid2); - ASSERT_THAT(setregid(rgid, egid), SyscallSucceeds()); - EXPECT_NO_ERRNO(CheckGIDs(rgid, egid, egid)); -} - -TEST(UidGidRootTest, Setresuid) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(IsRoot())); - - // "If one of the arguments equals -1, the corresponding value is not - // changed." - setresuid(2) - EXPECT_THAT(setresuid(-1, -1, -1), SyscallSucceeds()); - EXPECT_NO_ERRNO(CheckUIDs(0, 0, 0)); - - // Do setuid in a separate thread so that after finishing this test, the - // process can still open files the test harness created before starting this - // test. Otherwise, the files are created by root (UID before the test), but - // cannot be opened by the `uid` set below after the test. After calling - // setuid(non-zero-UID), there is no way to get root privileges back. - ScopedThread([&] { - const uid_t ruid = 12345; - const uid_t euid = 23456; - const uid_t suid = 34567; - - // Use syscall instead of glibc setuid wrapper because we want this setuid - // call to only apply to this task. posix threads, however, require that all - // threads have the same UIDs, so using the setuid wrapper sets all threads' - // real UID. - EXPECT_THAT(syscall(SYS_setresuid, ruid, euid, suid), SyscallSucceeds()); - EXPECT_NO_ERRNO(CheckUIDs(ruid, euid, suid)); - }); -} - -TEST(UidGidRootTest, Setresgid) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(IsRoot())); - - EXPECT_THAT(setresgid(-1, -1, -1), SyscallSucceeds()); - EXPECT_NO_ERRNO(CheckGIDs(0, 0, 0)); - - const gid_t rgid = 12345; - const gid_t egid = 23456; - const gid_t sgid = 34567; - ASSERT_THAT(setresgid(rgid, egid, sgid), SyscallSucceeds()); - EXPECT_NO_ERRNO(CheckGIDs(rgid, egid, sgid)); -} - -TEST(UidGidRootTest, Setgroups) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(IsRoot())); - - std::vector<gid_t> list = {123, 500}; - ASSERT_THAT(setgroups(list.size(), list.data()), SyscallSucceeds()); - std::vector<gid_t> list2(list.size()); - ASSERT_THAT(getgroups(list2.size(), list2.data()), SyscallSucceeds()); - EXPECT_THAT(list, UnorderedElementsAreArray(list2)); - - // "EFAULT: list has an invalid address." - EXPECT_THAT(getgroups(100, reinterpret_cast<gid_t*>(-1)), - SyscallFailsWithErrno(EFAULT)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/uname.cc b/test/syscalls/linux/uname.cc deleted file mode 100644 index d8824b171..000000000 --- a/test/syscalls/linux/uname.cc +++ /dev/null @@ -1,111 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <sched.h> -#include <sys/utsname.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "absl/strings/string_view.h" -#include "test/util/capability_util.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -TEST(UnameTest, Sanity) { - struct utsname buf; - ASSERT_THAT(uname(&buf), SyscallSucceeds()); - EXPECT_NE(strlen(buf.release), 0); - EXPECT_NE(strlen(buf.version), 0); - EXPECT_NE(strlen(buf.machine), 0); - EXPECT_NE(strlen(buf.sysname), 0); - EXPECT_NE(strlen(buf.nodename), 0); - EXPECT_NE(strlen(buf.domainname), 0); -} - -TEST(UnameTest, SetNames) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_ADMIN))); - - char hostname[65]; - ASSERT_THAT(sethostname("0123456789", 3), SyscallSucceeds()); - EXPECT_THAT(gethostname(hostname, sizeof(hostname)), SyscallSucceeds()); - EXPECT_EQ(absl::string_view(hostname), "012"); - - ASSERT_THAT(sethostname("0123456789\0xxx", 11), SyscallSucceeds()); - EXPECT_THAT(gethostname(hostname, sizeof(hostname)), SyscallSucceeds()); - EXPECT_EQ(absl::string_view(hostname), "0123456789"); - - ASSERT_THAT(sethostname("0123456789\0xxx", 12), SyscallSucceeds()); - EXPECT_THAT(gethostname(hostname, sizeof(hostname)), SyscallSucceeds()); - EXPECT_EQ(absl::string_view(hostname), "0123456789"); - - constexpr char kHostname[] = "wubbalubba"; - ASSERT_THAT(sethostname(kHostname, sizeof(kHostname)), SyscallSucceeds()); - - constexpr char kDomainname[] = "dubdub.com"; - ASSERT_THAT(setdomainname(kDomainname, sizeof(kDomainname)), - SyscallSucceeds()); - - struct utsname buf; - EXPECT_THAT(uname(&buf), SyscallSucceeds()); - EXPECT_EQ(absl::string_view(buf.nodename), kHostname); - EXPECT_EQ(absl::string_view(buf.domainname), kDomainname); - - // These should just be glibc wrappers that also call uname(2). - EXPECT_THAT(gethostname(hostname, sizeof(hostname)), SyscallSucceeds()); - EXPECT_EQ(absl::string_view(hostname), kHostname); - - char domainname[65]; - EXPECT_THAT(getdomainname(domainname, sizeof(domainname)), SyscallSucceeds()); - EXPECT_EQ(absl::string_view(domainname), kDomainname); -} - -TEST(UnameTest, UnprivilegedSetNames) { - if (ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_ADMIN))) { - EXPECT_NO_ERRNO(SetCapability(CAP_SYS_ADMIN, false)); - } - - EXPECT_THAT(sethostname("", 0), SyscallFailsWithErrno(EPERM)); - EXPECT_THAT(setdomainname("", 0), SyscallFailsWithErrno(EPERM)); -} - -TEST(UnameTest, UnshareUTS) { - SKIP_IF(!ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_ADMIN))); - - struct utsname init; - ASSERT_THAT(uname(&init), SyscallSucceeds()); - - ScopedThread([&]() { - EXPECT_THAT(unshare(CLONE_NEWUTS), SyscallSucceeds()); - - constexpr char kHostname[] = "wubbalubba"; - EXPECT_THAT(sethostname(kHostname, sizeof(kHostname)), SyscallSucceeds()); - - char hostname[65]; - EXPECT_THAT(gethostname(hostname, sizeof(hostname)), SyscallSucceeds()); - }); - - struct utsname after; - EXPECT_THAT(uname(&after), SyscallSucceeds()); - EXPECT_EQ(absl::string_view(after.nodename), init.nodename); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/unix_domain_socket_test_util.cc b/test/syscalls/linux/unix_domain_socket_test_util.cc deleted file mode 100644 index b05ab2900..000000000 --- a/test/syscalls/linux/unix_domain_socket_test_util.cc +++ /dev/null @@ -1,351 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/syscalls/linux/unix_domain_socket_test_util.h" - -#include <sys/un.h> - -#include <vector> - -#include "gtest/gtest.h" -#include "absl/strings/str_cat.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -std::string DescribeUnixDomainSocketType(int type) { - const char* type_str = nullptr; - switch (type & ~(SOCK_NONBLOCK | SOCK_CLOEXEC)) { - case SOCK_STREAM: - type_str = "SOCK_STREAM"; - break; - case SOCK_DGRAM: - type_str = "SOCK_DGRAM"; - break; - case SOCK_SEQPACKET: - type_str = "SOCK_SEQPACKET"; - break; - } - if (!type_str) { - return absl::StrCat("Unix domain socket with unknown type ", type); - } else { - return absl::StrCat(((type & SOCK_NONBLOCK) != 0) ? "non-blocking " : "", - ((type & SOCK_CLOEXEC) != 0) ? "close-on-exec " : "", - type_str, " Unix domain socket"); - } -} - -SocketPairKind UnixDomainSocketPair(int type) { - return SocketPairKind{DescribeUnixDomainSocketType(type), AF_UNIX, type, 0, - SyscallSocketPairCreator(AF_UNIX, type, 0)}; -} - -SocketPairKind FilesystemBoundUnixDomainSocketPair(int type) { - std::string description = absl::StrCat(DescribeUnixDomainSocketType(type), - " created with filesystem binding"); - if ((type & SOCK_DGRAM) == SOCK_DGRAM) { - return SocketPairKind{ - description, AF_UNIX, type, 0, - FilesystemBidirectionalBindSocketPairCreator(AF_UNIX, type, 0)}; - } - return SocketPairKind{ - description, AF_UNIX, type, 0, - FilesystemAcceptBindSocketPairCreator(AF_UNIX, type, 0)}; -} - -SocketPairKind AbstractBoundUnixDomainSocketPair(int type) { - std::string description = - absl::StrCat(DescribeUnixDomainSocketType(type), - " created with abstract namespace binding"); - if ((type & SOCK_DGRAM) == SOCK_DGRAM) { - return SocketPairKind{ - description, AF_UNIX, type, 0, - AbstractBidirectionalBindSocketPairCreator(AF_UNIX, type, 0)}; - } - return SocketPairKind{description, AF_UNIX, type, 0, - AbstractAcceptBindSocketPairCreator(AF_UNIX, type, 0)}; -} - -SocketPairKind SocketpairGoferUnixDomainSocketPair(int type) { - std::string description = absl::StrCat(DescribeUnixDomainSocketType(type), - " created with the socketpair gofer"); - return SocketPairKind{description, AF_UNIX, type, 0, - SocketpairGoferSocketPairCreator(AF_UNIX, type, 0)}; -} - -SocketPairKind SocketpairGoferFileSocketPair(int type) { - std::string description = - absl::StrCat(((type & O_NONBLOCK) != 0) ? "non-blocking " : "", - ((type & O_CLOEXEC) != 0) ? "close-on-exec " : "", - "file socket created with the socketpair gofer"); - // The socketpair gofer always creates SOCK_STREAM sockets on open(2). - return SocketPairKind{description, AF_UNIX, SOCK_STREAM, 0, - SocketpairGoferFileSocketPairCreator(type)}; -} - -SocketPairKind FilesystemUnboundUnixDomainSocketPair(int type) { - return SocketPairKind{absl::StrCat(DescribeUnixDomainSocketType(type), - " unbound with a filesystem address"), - AF_UNIX, type, 0, - FilesystemUnboundSocketPairCreator(AF_UNIX, type, 0)}; -} - -SocketPairKind AbstractUnboundUnixDomainSocketPair(int type) { - return SocketPairKind{ - absl::StrCat(DescribeUnixDomainSocketType(type), - " unbound with an abstract namespace address"), - AF_UNIX, type, 0, AbstractUnboundSocketPairCreator(AF_UNIX, type, 0)}; -} - -void SendSingleFD(int sock, int fd, char buf[], int buf_size) { - ASSERT_NO_FATAL_FAILURE(SendFDs(sock, &fd, 1, buf, buf_size)); -} - -void SendFDs(int sock, int fds[], int fds_size, char buf[], int buf_size) { - struct msghdr msg = {}; - std::vector<char> control(CMSG_SPACE(fds_size * sizeof(int))); - msg.msg_control = &control[0]; - msg.msg_controllen = control.size(); - - struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg); - cmsg->cmsg_len = CMSG_LEN(fds_size * sizeof(int)); - cmsg->cmsg_level = SOL_SOCKET; - cmsg->cmsg_type = SCM_RIGHTS; - for (int i = 0; i < fds_size; i++) { - memcpy(CMSG_DATA(cmsg) + i * sizeof(int), &fds[i], sizeof(int)); - } - - ASSERT_THAT(SendMsg(sock, &msg, buf, buf_size), - IsPosixErrorOkAndHolds(buf_size)); -} - -void RecvSingleFD(int sock, int* fd, char buf[], int buf_size) { - ASSERT_NO_FATAL_FAILURE(RecvFDs(sock, fd, 1, buf, buf_size, buf_size)); -} - -void RecvSingleFD(int sock, int* fd, char buf[], int buf_size, - int expected_size) { - ASSERT_NO_FATAL_FAILURE(RecvFDs(sock, fd, 1, buf, buf_size, expected_size)); -} - -void RecvFDs(int sock, int fds[], int fds_size, char buf[], int buf_size) { - ASSERT_NO_FATAL_FAILURE( - RecvFDs(sock, fds, fds_size, buf, buf_size, buf_size)); -} - -void RecvFDs(int sock, int fds[], int fds_size, char buf[], int buf_size, - int expected_size, bool peek) { - struct msghdr msg = {}; - std::vector<char> control(CMSG_SPACE(fds_size * sizeof(int))); - msg.msg_control = &control[0]; - msg.msg_controllen = control.size(); - - struct iovec iov; - iov.iov_base = buf; - iov.iov_len = buf_size; - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - int flags = 0; - if (peek) { - flags |= MSG_PEEK; - } - - ASSERT_THAT(RetryEINTR(recvmsg)(sock, &msg, flags), - SyscallSucceedsWithValue(expected_size)); - struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg); - ASSERT_NE(cmsg, nullptr); - ASSERT_EQ(cmsg->cmsg_len, CMSG_LEN(fds_size * sizeof(int))); - ASSERT_EQ(cmsg->cmsg_level, SOL_SOCKET); - ASSERT_EQ(cmsg->cmsg_type, SCM_RIGHTS); - - for (int i = 0; i < fds_size; i++) { - memcpy(&fds[i], CMSG_DATA(cmsg) + i * sizeof(int), sizeof(int)); - } -} - -void RecvFDs(int sock, int fds[], int fds_size, char buf[], int buf_size, - int expected_size) { - ASSERT_NO_FATAL_FAILURE( - RecvFDs(sock, fds, fds_size, buf, buf_size, expected_size, false)); -} - -void PeekSingleFD(int sock, int* fd, char buf[], int buf_size) { - ASSERT_NO_FATAL_FAILURE(RecvFDs(sock, fd, 1, buf, buf_size, buf_size, true)); -} - -void RecvNoCmsg(int sock, char buf[], int buf_size, int expected_size) { - struct msghdr msg = {}; - char control[CMSG_SPACE(sizeof(int)) + CMSG_SPACE(sizeof(struct ucred))]; - msg.msg_control = control; - msg.msg_controllen = sizeof(control); - - struct iovec iov; - iov.iov_base = buf; - iov.iov_len = buf_size; - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - ASSERT_THAT(RetryEINTR(recvmsg)(sock, &msg, 0), - SyscallSucceedsWithValue(expected_size)); - struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg); - EXPECT_EQ(cmsg, nullptr); -} - -void SendNullCmsg(int sock, char buf[], int buf_size) { - struct msghdr msg = {}; - msg.msg_control = nullptr; - msg.msg_controllen = 0; - - ASSERT_THAT(SendMsg(sock, &msg, buf, buf_size), - IsPosixErrorOkAndHolds(buf_size)); -} - -void SendCreds(int sock, ucred creds, char buf[], int buf_size) { - struct msghdr msg = {}; - - char control[CMSG_SPACE(sizeof(struct ucred))]; - msg.msg_control = control; - msg.msg_controllen = sizeof(control); - - struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg); - cmsg->cmsg_level = SOL_SOCKET; - cmsg->cmsg_type = SCM_CREDENTIALS; - cmsg->cmsg_len = CMSG_LEN(sizeof(struct ucred)); - memcpy(CMSG_DATA(cmsg), &creds, sizeof(struct ucred)); - - ASSERT_THAT(SendMsg(sock, &msg, buf, buf_size), - IsPosixErrorOkAndHolds(buf_size)); -} - -void SendCredsAndFD(int sock, ucred creds, int fd, char buf[], int buf_size) { - struct msghdr msg = {}; - - char control[CMSG_SPACE(sizeof(struct ucred)) + CMSG_SPACE(sizeof(int))] = {}; - msg.msg_control = control; - msg.msg_controllen = sizeof(control); - - struct cmsghdr* cmsg1 = CMSG_FIRSTHDR(&msg); - cmsg1->cmsg_level = SOL_SOCKET; - cmsg1->cmsg_type = SCM_CREDENTIALS; - cmsg1->cmsg_len = CMSG_LEN(sizeof(struct ucred)); - memcpy(CMSG_DATA(cmsg1), &creds, sizeof(struct ucred)); - - struct cmsghdr* cmsg2 = CMSG_NXTHDR(&msg, cmsg1); - cmsg2->cmsg_level = SOL_SOCKET; - cmsg2->cmsg_type = SCM_RIGHTS; - cmsg2->cmsg_len = CMSG_LEN(sizeof(int)); - memcpy(CMSG_DATA(cmsg2), &fd, sizeof(int)); - - ASSERT_THAT(SendMsg(sock, &msg, buf, buf_size), - IsPosixErrorOkAndHolds(buf_size)); -} - -void RecvCreds(int sock, ucred* creds, char buf[], int buf_size) { - ASSERT_NO_FATAL_FAILURE(RecvCreds(sock, creds, buf, buf_size, buf_size)); -} - -void RecvCreds(int sock, ucred* creds, char buf[], int buf_size, - int expected_size) { - struct msghdr msg = {}; - char control[CMSG_SPACE(sizeof(struct ucred))]; - msg.msg_control = control; - msg.msg_controllen = sizeof(control); - - struct iovec iov; - iov.iov_base = buf; - iov.iov_len = buf_size; - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - ASSERT_THAT(RetryEINTR(recvmsg)(sock, &msg, 0), - SyscallSucceedsWithValue(expected_size)); - struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg); - ASSERT_NE(cmsg, nullptr); - ASSERT_EQ(cmsg->cmsg_len, CMSG_LEN(sizeof(struct ucred))); - ASSERT_EQ(cmsg->cmsg_level, SOL_SOCKET); - ASSERT_EQ(cmsg->cmsg_type, SCM_CREDENTIALS); - - memcpy(creds, CMSG_DATA(cmsg), sizeof(struct ucred)); -} - -void RecvCredsAndFD(int sock, ucred* creds, int* fd, char buf[], int buf_size) { - struct msghdr msg = {}; - char control[CMSG_SPACE(sizeof(struct ucred)) + CMSG_SPACE(sizeof(int))]; - msg.msg_control = control; - msg.msg_controllen = sizeof(control); - - struct iovec iov; - iov.iov_base = buf; - iov.iov_len = buf_size; - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - ASSERT_THAT(RetryEINTR(recvmsg)(sock, &msg, 0), - SyscallSucceedsWithValue(buf_size)); - - struct cmsghdr* cmsg1 = CMSG_FIRSTHDR(&msg); - ASSERT_NE(cmsg1, nullptr); - ASSERT_EQ(cmsg1->cmsg_len, CMSG_LEN(sizeof(struct ucred))); - ASSERT_EQ(cmsg1->cmsg_level, SOL_SOCKET); - ASSERT_EQ(cmsg1->cmsg_type, SCM_CREDENTIALS); - memcpy(creds, CMSG_DATA(cmsg1), sizeof(struct ucred)); - - struct cmsghdr* cmsg2 = CMSG_NXTHDR(&msg, cmsg1); - ASSERT_NE(cmsg2, nullptr); - ASSERT_EQ(cmsg2->cmsg_len, CMSG_LEN(sizeof(int))); - ASSERT_EQ(cmsg2->cmsg_level, SOL_SOCKET); - ASSERT_EQ(cmsg2->cmsg_type, SCM_RIGHTS); - memcpy(fd, CMSG_DATA(cmsg2), sizeof(int)); -} - -void RecvSingleFDUnaligned(int sock, int* fd, char buf[], int buf_size) { - struct msghdr msg = {}; - char control[CMSG_SPACE(sizeof(int)) - sizeof(int)]; - msg.msg_control = control; - msg.msg_controllen = sizeof(control); - - struct iovec iov; - iov.iov_base = buf; - iov.iov_len = buf_size; - msg.msg_iov = &iov; - msg.msg_iovlen = 1; - - ASSERT_THAT(RetryEINTR(recvmsg)(sock, &msg, 0), - SyscallSucceedsWithValue(buf_size)); - - struct cmsghdr* cmsg = CMSG_FIRSTHDR(&msg); - ASSERT_NE(cmsg, nullptr); - ASSERT_EQ(cmsg->cmsg_len, CMSG_LEN(sizeof(int))); - ASSERT_EQ(cmsg->cmsg_level, SOL_SOCKET); - ASSERT_EQ(cmsg->cmsg_type, SCM_RIGHTS); - - memcpy(fd, CMSG_DATA(cmsg), sizeof(int)); -} - -void SetSoPassCred(int sock) { - int one = 1; - EXPECT_THAT(setsockopt(sock, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)), - SyscallSucceeds()); -} - -void UnsetSoPassCred(int sock) { - int zero = 0; - EXPECT_THAT(setsockopt(sock, SOL_SOCKET, SO_PASSCRED, &zero, sizeof(zero)), - SyscallSucceeds()); -} - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/unix_domain_socket_test_util.h b/test/syscalls/linux/unix_domain_socket_test_util.h deleted file mode 100644 index b8073db17..000000000 --- a/test/syscalls/linux/unix_domain_socket_test_util.h +++ /dev/null @@ -1,162 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_SYSCALLS_UNIX_DOMAIN_SOCKET_TEST_UTIL_H_ -#define GVISOR_TEST_SYSCALLS_UNIX_DOMAIN_SOCKET_TEST_UTIL_H_ - -#include <string> - -#include "test/syscalls/linux/socket_test_util.h" - -namespace gvisor { -namespace testing { - -// DescribeUnixDomainSocketType returns a human-readable string explaining the -// given Unix domain socket type. -std::string DescribeUnixDomainSocketType(int type); - -// UnixDomainSocketPair returns a SocketPairKind that represents SocketPairs -// created by invoking the socketpair() syscall with AF_UNIX and the given type. -SocketPairKind UnixDomainSocketPair(int type); - -// FilesystemBoundUnixDomainSocketPair returns a SocketPairKind that represents -// SocketPairs created with bind() and accept() syscalls with a temp file path, -// AF_UNIX and the given type. -SocketPairKind FilesystemBoundUnixDomainSocketPair(int type); - -// AbstractBoundUnixDomainSocketPair returns a SocketPairKind that represents -// SocketPairs created with bind() and accept() syscalls with a temp abstract -// path, AF_UNIX and the given type. -SocketPairKind AbstractBoundUnixDomainSocketPair(int type); - -// SocketpairGoferUnixDomainSocketPair returns a SocketPairKind that was created -// with two sockets connected to the socketpair gofer. -SocketPairKind SocketpairGoferUnixDomainSocketPair(int type); - -// SocketpairGoferFileSocketPair returns a SocketPairKind that was created with -// two open() calls on paths backed by the socketpair gofer. -SocketPairKind SocketpairGoferFileSocketPair(int type); - -// FilesystemUnboundUnixDomainSocketPair returns a SocketPairKind that -// represents two unbound sockets and a filesystem path for binding. -SocketPairKind FilesystemUnboundUnixDomainSocketPair(int type); - -// AbstractUnboundUnixDomainSocketPair returns a SocketPairKind that represents -// two unbound sockets and an abstract namespace path for binding. -SocketPairKind AbstractUnboundUnixDomainSocketPair(int type); - -// SendSingleFD sends both a single FD and some data over a unix domain socket -// specified by an FD. Note that calls to this function must be wrapped in -// ASSERT_NO_FATAL_FAILURE for internal assertions to halt the test. -void SendSingleFD(int sock, int fd, char buf[], int buf_size); - -// SendFDs sends an arbitrary number of FDs and some data over a unix domain -// socket specified by an FD. Note that calls to this function must be wrapped -// in ASSERT_NO_FATAL_FAILURE for internal assertions to halt the test. -void SendFDs(int sock, int fds[], int fds_size, char buf[], int buf_size); - -// RecvSingleFD receives both a single FD and some data over a unix domain -// socket specified by an FD. Note that calls to this function must be wrapped -// in ASSERT_NO_FATAL_FAILURE for internal assertions to halt the test. -void RecvSingleFD(int sock, int* fd, char buf[], int buf_size); - -// RecvSingleFD receives both a single FD and some data over a unix domain -// socket specified by an FD. This version allows the expected amount of data -// received to be different than the buffer size. Note that calls to this -// function must be wrapped in ASSERT_NO_FATAL_FAILURE for internal assertions -// to halt the test. -void RecvSingleFD(int sock, int* fd, char buf[], int buf_size, - int expected_size); - -// PeekSingleFD peeks at both a single FD and some data over a unix domain -// socket specified by an FD. Note that calls to this function must be wrapped -// in ASSERT_NO_FATAL_FAILURE for internal assertions to halt the test. -void PeekSingleFD(int sock, int* fd, char buf[], int buf_size); - -// RecvFDs receives both an arbitrary number of FDs and some data over a unix -// domain socket specified by an FD. Note that calls to this function must be -// wrapped in ASSERT_NO_FATAL_FAILURE for internal assertions to halt the test. -void RecvFDs(int sock, int fds[], int fds_size, char buf[], int buf_size); - -// RecvFDs receives both an arbitrary number of FDs and some data over a unix -// domain socket specified by an FD. This version allows the expected amount of -// data received to be different than the buffer size. Note that calls to this -// function must be wrapped in ASSERT_NO_FATAL_FAILURE for internal assertions -// to halt the test. -void RecvFDs(int sock, int fds[], int fds_size, char buf[], int buf_size, - int expected_size); - -// RecvNoCmsg receives some data over a unix domain socket specified by an FD -// and asserts that no control messages are available for receiving. Note that -// calls to this function must be wrapped in ASSERT_NO_FATAL_FAILURE for -// internal assertions to halt the test. -void RecvNoCmsg(int sock, char buf[], int buf_size, int expected_size); - -inline void RecvNoCmsg(int sock, char buf[], int buf_size) { - RecvNoCmsg(sock, buf, buf_size, buf_size); -} - -// SendCreds sends the credentials of the current process and some data over a -// unix domain socket specified by an FD. Note that calls to this function must -// be wrapped in ASSERT_NO_FATAL_FAILURE for internal assertions to halt the -// test. -void SendCreds(int sock, ucred creds, char buf[], int buf_size); - -// SendCredsAndFD sends the credentials of the current process, a single FD, and -// some data over a unix domain socket specified by an FD. Note that calls to -// this function must be wrapped in ASSERT_NO_FATAL_FAILURE for internal -// assertions to halt the test. -void SendCredsAndFD(int sock, ucred creds, int fd, char buf[], int buf_size); - -// RecvCreds receives some credentials and some data over a unix domain socket -// specified by an FD. Note that calls to this function must be wrapped in -// ASSERT_NO_FATAL_FAILURE for internal assertions to halt the test. -void RecvCreds(int sock, ucred* creds, char buf[], int buf_size); - -// RecvCreds receives some credentials and some data over a unix domain socket -// specified by an FD. This version allows the expected amount of data received -// to be different than the buffer size. Note that calls to this function must -// be wrapped in ASSERT_NO_FATAL_FAILURE for internal assertions to halt the -// test. -void RecvCreds(int sock, ucred* creds, char buf[], int buf_size, - int expected_size); - -// RecvCredsAndFD receives some credentials, a single FD, and some data over a -// unix domain socket specified by an FD. Note that calls to this function must -// be wrapped in ASSERT_NO_FATAL_FAILURE for internal assertions to halt the -// test. -void RecvCredsAndFD(int sock, ucred* creds, int* fd, char buf[], int buf_size); - -// SendNullCmsg sends a null control message and some data over a unix domain -// socket specified by an FD. Note that calls to this function must be wrapped -// in ASSERT_NO_FATAL_FAILURE for internal assertions to halt the test. -void SendNullCmsg(int sock, char buf[], int buf_size); - -// RecvSingleFDUnaligned sends both a single FD and some data over a unix domain -// socket specified by an FD. This function does not obey the spec, but Linux -// allows it and the apphosting code depends on this quirk. Note that calls to -// this function must be wrapped in ASSERT_NO_FATAL_FAILURE for internal -// assertions to halt the test. -void RecvSingleFDUnaligned(int sock, int* fd, char buf[], int buf_size); - -// SetSoPassCred sets the SO_PASSCRED option on the specified socket. -void SetSoPassCred(int sock); - -// UnsetSoPassCred clears the SO_PASSCRED option on the specified socket. -void UnsetSoPassCred(int sock); - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_SYSCALLS_UNIX_DOMAIN_SOCKET_TEST_UTIL_H_ diff --git a/test/syscalls/linux/unlink.cc b/test/syscalls/linux/unlink.cc deleted file mode 100644 index 2040375c9..000000000 --- a/test/syscalls/linux/unlink.cc +++ /dev/null @@ -1,214 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <fcntl.h> -#include <unistd.h> - -#include "gtest/gtest.h" -#include "absl/strings/str_cat.h" -#include "test/util/capability_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/fs_util.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -TEST(UnlinkTest, IsDir) { - auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - - EXPECT_THAT(unlink(dir.path().c_str()), SyscallFailsWithErrno(EISDIR)); -} - -TEST(UnlinkTest, DirNotEmpty) { - auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - - int fd; - std::string path = JoinPath(dir.path(), "ExistingFile"); - EXPECT_THAT(fd = open(path.c_str(), O_RDWR | O_CREAT, 0666), - SyscallSucceeds()); - EXPECT_THAT(close(fd), SyscallSucceeds()); - EXPECT_THAT(rmdir(dir.path().c_str()), SyscallFailsWithErrno(ENOTEMPTY)); -} - -TEST(UnlinkTest, Rmdir) { - auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - EXPECT_THAT(rmdir(dir.path().c_str()), SyscallSucceeds()); -} - -TEST(UnlinkTest, AtDir) { - int dirfd; - auto tmpdir = GetAbsoluteTestTmpdir(); - EXPECT_THAT(dirfd = open(tmpdir.c_str(), O_DIRECTORY, 0), SyscallSucceeds()); - - auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDirIn(tmpdir)); - auto dir_relpath = - ASSERT_NO_ERRNO_AND_VALUE(GetRelativePath(tmpdir, dir.path())); - EXPECT_THAT(unlinkat(dirfd, dir_relpath.c_str(), AT_REMOVEDIR), - SyscallSucceeds()); - ASSERT_THAT(close(dirfd), SyscallSucceeds()); -} - -TEST(UnlinkTest, AtDirDegradedPermissions_NoRandomSave) { - // Drop capabilities that allow us to override file and directory permissions. - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_READ_SEARCH, false)); - - auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - - int dirfd; - ASSERT_THAT(dirfd = open(dir.path().c_str(), O_DIRECTORY, 0), - SyscallSucceeds()); - - std::string sub_dir = JoinPath(dir.path(), "NewDir"); - EXPECT_THAT(mkdir(sub_dir.c_str(), 0755), SyscallSucceeds()); - EXPECT_THAT(fchmod(dirfd, 0444), SyscallSucceeds()); - EXPECT_THAT(unlinkat(dirfd, "NewDir", AT_REMOVEDIR), - SyscallFailsWithErrno(EACCES)); - ASSERT_THAT(close(dirfd), SyscallSucceeds()); -} - -// Files cannot be unlinked if the parent is not writable and executable. -TEST(UnlinkTest, ParentDegradedPermissions) { - // Drop capabilities that allow us to override file and directory permissions. - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_READ_SEARCH, false)); - - auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(dir.path())); - - ASSERT_THAT(chmod(dir.path().c_str(), 0000), SyscallSucceeds()); - - struct stat st; - ASSERT_THAT(stat(file.path().c_str(), &st), SyscallFailsWithErrno(EACCES)); - ASSERT_THAT(unlinkat(AT_FDCWD, file.path().c_str(), 0), - SyscallFailsWithErrno(EACCES)); - - // Non-existent files also return EACCES. - const std::string nonexist = JoinPath(dir.path(), "doesnotexist"); - ASSERT_THAT(stat(nonexist.c_str(), &st), SyscallFailsWithErrno(EACCES)); - ASSERT_THAT(unlinkat(AT_FDCWD, nonexist.c_str(), 0), - SyscallFailsWithErrno(EACCES)); -} - -TEST(UnlinkTest, AtBad) { - int dirfd; - EXPECT_THAT(dirfd = open(GetAbsoluteTestTmpdir().c_str(), O_DIRECTORY, 0), - SyscallSucceeds()); - - // Try removing a directory as a file. - std::string path = JoinPath(GetAbsoluteTestTmpdir(), "NewDir"); - EXPECT_THAT(mkdir(path.c_str(), 0755), SyscallSucceeds()); - EXPECT_THAT(unlinkat(dirfd, "NewDir", 0), SyscallFailsWithErrno(EISDIR)); - EXPECT_THAT(unlinkat(dirfd, "NewDir", AT_REMOVEDIR), SyscallSucceeds()); - - // Try removing a file as a directory. - int fd; - EXPECT_THAT(fd = openat(dirfd, "UnlinkAtFile", O_RDWR | O_CREAT, 0666), - SyscallSucceeds()); - EXPECT_THAT(unlinkat(dirfd, "UnlinkAtFile", AT_REMOVEDIR), - SyscallFailsWithErrno(ENOTDIR)); - EXPECT_THAT(unlinkat(dirfd, "UnlinkAtFile/", 0), - SyscallFailsWithErrno(ENOTDIR)); - ASSERT_THAT(close(fd), SyscallSucceeds()); - EXPECT_THAT(unlinkat(dirfd, "UnlinkAtFile", 0), SyscallSucceeds()); - - // Cleanup. - ASSERT_THAT(close(dirfd), SyscallSucceeds()); -} - -TEST(UnlinkTest, AbsTmpFile) { - int fd; - std::string path = JoinPath(GetAbsoluteTestTmpdir(), "ExistingFile"); - EXPECT_THAT(fd = open(path.c_str(), O_RDWR | O_CREAT, 0666), - SyscallSucceeds()); - EXPECT_THAT(close(fd), SyscallSucceeds()); - EXPECT_THAT(unlink(path.c_str()), SyscallSucceeds()); -} - -TEST(UnlinkTest, TooLongName) { - EXPECT_THAT(unlink(std::vector<char>(16384, '0').data()), - SyscallFailsWithErrno(ENAMETOOLONG)); -} - -TEST(UnlinkTest, BadNamePtr) { - EXPECT_THAT(unlink(reinterpret_cast<char*>(1)), - SyscallFailsWithErrno(EFAULT)); -} - -TEST(UnlinkTest, AtFile) { - int dirfd; - EXPECT_THAT(dirfd = open(GetAbsoluteTestTmpdir().c_str(), O_DIRECTORY, 0666), - SyscallSucceeds()); - int fd; - EXPECT_THAT(fd = openat(dirfd, "UnlinkAtFile", O_RDWR | O_CREAT, 0666), - SyscallSucceeds()); - EXPECT_THAT(close(fd), SyscallSucceeds()); - EXPECT_THAT(unlinkat(dirfd, "UnlinkAtFile", 0), SyscallSucceeds()); -} - -TEST(UnlinkTest, OpenFile_NoRandomSave) { - // We can't save unlinked file unless they are on tmpfs. - const DisableSave ds; - auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - int fd; - EXPECT_THAT(fd = open(file.path().c_str(), O_RDWR, 0666), SyscallSucceeds()); - EXPECT_THAT(unlink(file.path().c_str()), SyscallSucceeds()); - EXPECT_THAT(close(fd), SyscallSucceeds()); -} - -TEST(UnlinkTest, CannotRemoveDots) { - auto file = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const std::string self = JoinPath(file.path(), "."); - ASSERT_THAT(unlink(self.c_str()), SyscallFailsWithErrno(ENOTDIR)); - const std::string parent = JoinPath(file.path(), ".."); - ASSERT_THAT(unlink(parent.c_str()), SyscallFailsWithErrno(ENOTDIR)); -} - -TEST(UnlinkTest, CannotRemoveRoot) { - ASSERT_THAT(unlinkat(-1, "/", AT_REMOVEDIR), SyscallFailsWithErrno(EBUSY)); -} - -TEST(UnlinkTest, CannotRemoveRootWithAtDir) { - const FileDescriptor dirfd = ASSERT_NO_ERRNO_AND_VALUE( - Open(GetAbsoluteTestTmpdir(), O_DIRECTORY, 0666)); - ASSERT_THAT(unlinkat(dirfd.get(), "/", AT_REMOVEDIR), - SyscallFailsWithErrno(EBUSY)); -} - -TEST(RmdirTest, CannotRemoveDots) { - auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const std::string self = JoinPath(dir.path(), "."); - ASSERT_THAT(rmdir(self.c_str()), SyscallFailsWithErrno(EINVAL)); - const std::string parent = JoinPath(dir.path(), ".."); - ASSERT_THAT(rmdir(parent.c_str()), SyscallFailsWithErrno(ENOTEMPTY)); -} - -TEST(RmdirTest, CanRemoveWithTrailingSlashes) { - auto dir1 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const std::string slash = absl::StrCat(dir1.path(), "/"); - ASSERT_THAT(rmdir(slash.c_str()), SyscallSucceeds()); - auto dir2 = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const std::string slashslash = absl::StrCat(dir2.path(), "//"); - ASSERT_THAT(rmdir(slashslash.c_str()), SyscallSucceeds()); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/unshare.cc b/test/syscalls/linux/unshare.cc deleted file mode 100644 index e32619efe..000000000 --- a/test/syscalls/linux/unshare.cc +++ /dev/null @@ -1,50 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <sched.h> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "absl/synchronization/mutex.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -TEST(UnshareTest, AllowsZeroFlags) { - ASSERT_THAT(unshare(0), SyscallSucceeds()); -} - -TEST(UnshareTest, ThreadFlagFailsIfMultithreaded) { - absl::Mutex mu; - bool finished = false; - ScopedThread t([&] { - mu.Lock(); - mu.Await(absl::Condition(&finished)); - mu.Unlock(); - }); - ASSERT_THAT(unshare(CLONE_THREAD), SyscallFailsWithErrno(EINVAL)); - mu.Lock(); - finished = true; - mu.Unlock(); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/utimes.cc b/test/syscalls/linux/utimes.cc deleted file mode 100644 index 3a927a430..000000000 --- a/test/syscalls/linux/utimes.cc +++ /dev/null @@ -1,332 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <fcntl.h> -#include <sys/stat.h> -#include <sys/syscall.h> -#include <sys/time.h> -#include <sys/types.h> -#include <time.h> -#include <unistd.h> -#include <utime.h> - -#include <string> - -#include "absl/time/time.h" -#include "test/util/file_descriptor.h" -#include "test/util/fs_util.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -// TODO(b/36516566): utimes(nullptr) does not pick the "now" time in the -// application's time domain, so when asserting that times are within a window, -// we expand the window to allow for differences between the time domains. -constexpr absl::Duration kClockSlack = absl::Milliseconds(100); - -// TimeBoxed runs fn, setting before and after to (coarse realtime) times -// guaranteed* to come before and after fn started and completed, respectively. -// -// fn may be called more than once if the clock is adjusted. -// -// * See the comment on kClockSlack. gVisor breaks this guarantee. -void TimeBoxed(absl::Time* before, absl::Time* after, - std::function<void()> const& fn) { - do { - // N.B. utimes and friends use CLOCK_REALTIME_COARSE for setting time (i.e., - // current_kernel_time()). See fs/attr.c:notify_change. - // - // notify_change truncates the time to a multiple of s_time_gran, but most - // filesystems set it to 1, so we don't do any truncation. - struct timespec ts; - EXPECT_THAT(clock_gettime(CLOCK_REALTIME_COARSE, &ts), SyscallSucceeds()); - *before = absl::TimeFromTimespec(ts); - - fn(); - - EXPECT_THAT(clock_gettime(CLOCK_REALTIME_COARSE, &ts), SyscallSucceeds()); - *after = absl::TimeFromTimespec(ts); - - if (*after < *before) { - // Clock jumped backwards; retry. - // - // Technically this misses jumps small enough to keep after > before, - // which could lead to test failures, but that is very unlikely to happen. - continue; - } - - if (IsRunningOnGvisor()) { - // See comment on kClockSlack. - *before -= kClockSlack; - *after += kClockSlack; - } - } while (*after < *before); -} - -void TestUtimesOnPath(std::string const& path) { - struct stat statbuf; - - struct timeval times[2] = {{1, 0}, {2, 0}}; - EXPECT_THAT(utimes(path.c_str(), times), SyscallSucceeds()); - EXPECT_THAT(stat(path.c_str(), &statbuf), SyscallSucceeds()); - EXPECT_EQ(1, statbuf.st_atime); - EXPECT_EQ(2, statbuf.st_mtime); - - absl::Time before; - absl::Time after; - TimeBoxed(&before, &after, [&] { - EXPECT_THAT(utimes(path.c_str(), nullptr), SyscallSucceeds()); - }); - - EXPECT_THAT(stat(path.c_str(), &statbuf), SyscallSucceeds()); - - absl::Time atime = absl::TimeFromTimespec(statbuf.st_atim); - EXPECT_GE(atime, before); - EXPECT_LE(atime, after); - - absl::Time mtime = absl::TimeFromTimespec(statbuf.st_mtim); - EXPECT_GE(mtime, before); - EXPECT_LE(mtime, after); -} - -TEST(UtimesTest, OnFile) { - auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - TestUtimesOnPath(f.path()); -} - -TEST(UtimesTest, OnDir) { - auto dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - TestUtimesOnPath(dir.path()); -} - -TEST(UtimesTest, MissingPath) { - auto path = NewTempAbsPath(); - struct timeval times[2] = {{1, 0}, {2, 0}}; - EXPECT_THAT(utimes(path.c_str(), times), SyscallFailsWithErrno(ENOENT)); -} - -void TestFutimesat(int dirFd, std::string const& path) { - struct stat statbuf; - - struct timeval times[2] = {{1, 0}, {2, 0}}; - EXPECT_THAT(futimesat(dirFd, path.c_str(), times), SyscallSucceeds()); - EXPECT_THAT(fstatat(dirFd, path.c_str(), &statbuf, 0), SyscallSucceeds()); - EXPECT_EQ(1, statbuf.st_atime); - EXPECT_EQ(2, statbuf.st_mtime); - - absl::Time before; - absl::Time after; - TimeBoxed(&before, &after, [&] { - EXPECT_THAT(futimesat(dirFd, path.c_str(), nullptr), SyscallSucceeds()); - }); - - EXPECT_THAT(fstatat(dirFd, path.c_str(), &statbuf, 0), SyscallSucceeds()); - - absl::Time atime = absl::TimeFromTimespec(statbuf.st_atim); - EXPECT_GE(atime, before); - EXPECT_LE(atime, after); - - absl::Time mtime = absl::TimeFromTimespec(statbuf.st_mtim); - EXPECT_GE(mtime, before); - EXPECT_LE(mtime, after); -} - -TEST(FutimesatTest, OnAbsPath) { - auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - TestFutimesat(0, f.path()); -} - -TEST(FutimesatTest, OnRelPath) { - auto d = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(d.path())); - auto basename = std::string(Basename(f.path())); - const FileDescriptor dirFd = - ASSERT_NO_ERRNO_AND_VALUE(Open(d.path(), O_RDONLY | O_DIRECTORY)); - TestFutimesat(dirFd.get(), basename); -} - -TEST(FutimesatTest, InvalidNsec) { - auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - struct timeval times[4][2] = {{ - {0, 1}, // Valid - {1, static_cast<int64_t>(1e7)} // Invalid - }, - { - {1, static_cast<int64_t>(1e7)}, // Invalid - {0, 1} // Valid - }, - { - {0, 1}, // Valid - {1, -1} // Invalid - }, - { - {1, -1}, // Invalid - {0, 1} // Valid - }}; - - for (unsigned int i = 0; i < sizeof(times) / sizeof(times[0]); i++) { - std::cout << "test:" << i << "\n"; - EXPECT_THAT(futimesat(0, f.path().c_str(), times[i]), - SyscallFailsWithErrno(EINVAL)); - } -} - -void TestUtimensat(int dirFd, std::string const& path) { - struct stat statbuf; - const struct timespec times[2] = {{1, 0}, {2, 0}}; - EXPECT_THAT(utimensat(dirFd, path.c_str(), times, 0), SyscallSucceeds()); - EXPECT_THAT(fstatat(dirFd, path.c_str(), &statbuf, 0), SyscallSucceeds()); - EXPECT_EQ(1, statbuf.st_atime); - EXPECT_EQ(2, statbuf.st_mtime); - - // Test setting with UTIME_NOW and UTIME_OMIT. - struct stat statbuf2; - const struct timespec times2[2] = { - {0, UTIME_NOW}, // Should set atime to now. - {0, UTIME_OMIT} // Should not change mtime. - }; - - absl::Time before; - absl::Time after; - TimeBoxed(&before, &after, [&] { - EXPECT_THAT(utimensat(dirFd, path.c_str(), times2, 0), SyscallSucceeds()); - }); - - EXPECT_THAT(fstatat(dirFd, path.c_str(), &statbuf2, 0), SyscallSucceeds()); - - absl::Time atime2 = absl::TimeFromTimespec(statbuf2.st_atim); - EXPECT_GE(atime2, before); - EXPECT_LE(atime2, after); - - absl::Time mtime = absl::TimeFromTimespec(statbuf.st_mtim); - absl::Time mtime2 = absl::TimeFromTimespec(statbuf2.st_mtim); - // mtime should not be changed. - EXPECT_EQ(mtime, mtime2); - - // Test setting with times = NULL. Should set both atime and mtime to the - // current system time. - struct stat statbuf3; - TimeBoxed(&before, &after, [&] { - EXPECT_THAT(utimensat(dirFd, path.c_str(), nullptr, 0), SyscallSucceeds()); - }); - - EXPECT_THAT(fstatat(dirFd, path.c_str(), &statbuf3, 0), SyscallSucceeds()); - - absl::Time atime3 = absl::TimeFromTimespec(statbuf3.st_atim); - EXPECT_GE(atime3, before); - EXPECT_LE(atime3, after); - - absl::Time mtime3 = absl::TimeFromTimespec(statbuf3.st_mtim); - EXPECT_GE(mtime3, before); - EXPECT_LE(mtime3, after); - - if (!IsRunningOnGvisor()) { - // FIXME(b/36516566): Gofers set atime and mtime to different "now" times. - EXPECT_EQ(atime3, mtime3); - } -} - -TEST(UtimensatTest, OnAbsPath) { - auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - TestUtimensat(0, f.path()); -} - -TEST(UtimensatTest, OnRelPath) { - auto d = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(d.path())); - auto basename = std::string(Basename(f.path())); - const FileDescriptor dirFd = - ASSERT_NO_ERRNO_AND_VALUE(Open(d.path(), O_RDONLY | O_DIRECTORY)); - TestUtimensat(dirFd.get(), basename); -} - -TEST(UtimensatTest, OmitNoop) { - // Setting both timespecs to UTIME_OMIT on a nonexistant path should succeed. - auto path = NewTempAbsPath(); - const struct timespec times[2] = {{0, UTIME_OMIT}, {0, UTIME_OMIT}}; - EXPECT_THAT(utimensat(0, path.c_str(), times, 0), SyscallSucceeds()); -} - -// Verify that we can actually set atime and mtime to 0. -TEST(UtimeTest, ZeroAtimeandMtime) { - const auto tmp_dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const auto tmp_file = - ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFileIn(tmp_dir.path())); - - // Stat the file before and after updating atime and mtime. - struct stat stat_before = {}; - EXPECT_THAT(stat(tmp_file.path().c_str(), &stat_before), SyscallSucceeds()); - - ASSERT_NE(stat_before.st_atime, 0); - ASSERT_NE(stat_before.st_mtime, 0); - - const struct utimbuf times = {}; // Zero for both atime and mtime. - EXPECT_THAT(utime(tmp_file.path().c_str(), ×), SyscallSucceeds()); - - struct stat stat_after = {}; - EXPECT_THAT(stat(tmp_file.path().c_str(), &stat_after), SyscallSucceeds()); - - // We should see the atime and mtime changed when we set them to 0. - ASSERT_EQ(stat_after.st_atime, 0); - ASSERT_EQ(stat_after.st_mtime, 0); -} - -TEST(UtimensatTest, InvalidNsec) { - auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - struct timespec times[2][2] = { - { - {0, UTIME_OMIT}, // Valid - {2, static_cast<int64_t>(1e10)} // Invalid - }, - { - {2, static_cast<int64_t>(1e10)}, // Invalid - {0, UTIME_OMIT} // Valid - }}; - - for (unsigned int i = 0; i < sizeof(times) / sizeof(times[0]); i++) { - std::cout << "test:" << i << "\n"; - EXPECT_THAT(utimensat(0, f.path().c_str(), times[i], 0), - SyscallFailsWithErrno(EINVAL)); - } -} - -TEST(Utimensat, NullPath) { - // From man utimensat(2): - // "the Linux utimensat() system call implements a nonstandard feature: if - // pathname is NULL, then the call modifies the timestamps of the file - // referred to by the file descriptor dirfd (which may refer to any type of - // file). - // Note, however, that the glibc wrapper for utimensat() disallows - // passing NULL as the value for file: the wrapper function returns the error - // EINVAL in this case." - auto f = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateFile()); - const FileDescriptor fd = ASSERT_NO_ERRNO_AND_VALUE(Open(f.path(), O_RDWR)); - struct stat statbuf; - const struct timespec times[2] = {{1, 0}, {2, 0}}; - // Call syscall directly. - EXPECT_THAT(syscall(SYS_utimensat, fd.get(), NULL, times, 0), - SyscallSucceeds()); - EXPECT_THAT(fstatat(0, f.path().c_str(), &statbuf, 0), SyscallSucceeds()); - EXPECT_EQ(1, statbuf.st_atime); - EXPECT_EQ(2, statbuf.st_mtime); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/vdso.cc b/test/syscalls/linux/vdso.cc deleted file mode 100644 index 19c80add8..000000000 --- a/test/syscalls/linux/vdso.cc +++ /dev/null @@ -1,48 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <string.h> -#include <sys/mman.h> - -#include <algorithm> - -#include "gtest/gtest.h" -#include "test/util/fs_util.h" -#include "test/util/posix_error.h" -#include "test/util/proc_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -// Ensure that the vvar page cannot be made writable. -TEST(VvarTest, WriteVvar) { - auto contents = ASSERT_NO_ERRNO_AND_VALUE(GetContents("/proc/self/maps")); - auto maps = ASSERT_NO_ERRNO_AND_VALUE(ParseProcMaps(contents)); - auto it = std::find_if(maps.begin(), maps.end(), [](const ProcMapsEntry& e) { - return e.filename == "[vvar]"; - }); - - SKIP_IF(it == maps.end()); - EXPECT_THAT(mprotect(reinterpret_cast<void*>(it->start), kPageSize, - PROT_READ | PROT_WRITE), - SyscallFailsWithErrno(EACCES)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/vdso_clock_gettime.cc b/test/syscalls/linux/vdso_clock_gettime.cc deleted file mode 100644 index ce1899f45..000000000 --- a/test/syscalls/linux/vdso_clock_gettime.cc +++ /dev/null @@ -1,108 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <stdint.h> -#include <sys/time.h> -#include <syscall.h> -#include <time.h> -#include <unistd.h> - -#include <map> -#include <string> -#include <utility> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "absl/strings/numbers.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -std::string PrintClockId(::testing::TestParamInfo<clockid_t> info) { - switch (info.param) { - case CLOCK_MONOTONIC: - return "CLOCK_MONOTONIC"; - case CLOCK_REALTIME: - return "CLOCK_REALTIME"; - case CLOCK_BOOTTIME: - return "CLOCK_BOOTTIME"; - default: - return absl::StrCat(info.param); - } -} - -class CorrectVDSOClockTest : public ::testing::TestWithParam<clockid_t> {}; - -TEST_P(CorrectVDSOClockTest, IsCorrect) { - struct timespec tvdso, tsys; - absl::Time vdso_time, sys_time; - uint64_t total_calls = 0; - - // It is expected that 82.5% of clock_gettime calls will be less than 100us - // skewed from the system time. - // Unfortunately this is not only influenced by the VDSO clock skew, but also - // by arbitrary scheduling delays and the like. The test is therefore - // regularly disabled. - std::map<absl::Duration, std::tuple<double, uint64_t, uint64_t>> confidence = - { - {absl::Microseconds(100), std::make_tuple(0.825, 0, 0)}, - {absl::Microseconds(250), std::make_tuple(0.94, 0, 0)}, - {absl::Milliseconds(1), std::make_tuple(0.999, 0, 0)}, - }; - - absl::Time start = absl::Now(); - while (absl::Now() < start + absl::Seconds(30)) { - EXPECT_THAT(clock_gettime(GetParam(), &tvdso), SyscallSucceeds()); - EXPECT_THAT(syscall(__NR_clock_gettime, GetParam(), &tsys), - SyscallSucceeds()); - - vdso_time = absl::TimeFromTimespec(tvdso); - - for (auto const& conf : confidence) { - std::get<1>(confidence[conf.first]) += - (sys_time - vdso_time) < conf.first; - } - - sys_time = absl::TimeFromTimespec(tsys); - - for (auto const& conf : confidence) { - std::get<2>(confidence[conf.first]) += - (vdso_time - sys_time) < conf.first; - } - - ++total_calls; - } - - for (auto const& conf : confidence) { - EXPECT_GE(std::get<1>(conf.second) / static_cast<double>(total_calls), - std::get<0>(conf.second)); - EXPECT_GE(std::get<2>(conf.second) / static_cast<double>(total_calls), - std::get<0>(conf.second)); - } -} - -INSTANTIATE_TEST_SUITE_P(ClockGettime, CorrectVDSOClockTest, - ::testing::Values(CLOCK_MONOTONIC, CLOCK_REALTIME, - CLOCK_BOOTTIME), - PrintClockId); - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/vfork.cc b/test/syscalls/linux/vfork.cc deleted file mode 100644 index 0aaba482d..000000000 --- a/test/syscalls/linux/vfork.cc +++ /dev/null @@ -1,195 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <sys/types.h> -#include <sys/wait.h> -#include <unistd.h> - -#include <string> -#include <utility> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "absl/flags/flag.h" -#include "absl/time/time.h" -#include "test/util/logging.h" -#include "test/util/multiprocess_util.h" -#include "test/util/test_util.h" -#include "test/util/time_util.h" - -ABSL_FLAG(bool, vfork_test_child, false, - "If true, run the VforkTest child workload."); - -namespace gvisor { -namespace testing { - -namespace { - -// We don't test with raw CLONE_VFORK to avoid interacting with glibc's use of -// TLS. -// -// Even with vfork(2), we must be careful to do little more in the child than -// call execve(2). We use the simplest sleep function possible, though this is -// still precarious, as we're officially only allowed to call execve(2) and -// _exit(2). -constexpr absl::Duration kChildDelay = absl::Seconds(10); - -// Exit code for successful child subprocesses. We don't want to use 0 since -// it's too common, and an execve(2) failure causes the child to exit with the -// errno, so kChildExitCode is chosen to be an unlikely errno: -constexpr int kChildExitCode = 118; // ENOTNAM: Not a XENIX named type file - -int64_t MonotonicNow() { - struct timespec now; - TEST_PCHECK(clock_gettime(CLOCK_MONOTONIC, &now) == 0); - return now.tv_sec * 1000000000ll + now.tv_nsec; -} - -TEST(VforkTest, ParentStopsUntilChildExits) { - const auto test = [] { - // N.B. Run the test in a single-threaded subprocess because - // vfork is not safe in a multi-threaded process. - - const int64_t start = MonotonicNow(); - - pid_t pid = vfork(); - if (pid == 0) { - SleepSafe(kChildDelay); - _exit(kChildExitCode); - } - TEST_PCHECK_MSG(pid > 0, "vfork failed"); - MaybeSave(); - - const int64_t end = MonotonicNow(); - - absl::Duration dur = absl::Nanoseconds(end - start); - - TEST_CHECK(dur >= kChildDelay); - - int status = 0; - TEST_PCHECK(RetryEINTR(waitpid)(pid, &status, 0)); - TEST_CHECK(WIFEXITED(status)); - TEST_CHECK(WEXITSTATUS(status) == kChildExitCode); - }; - - EXPECT_THAT(InForkedProcess(test), IsPosixErrorOkAndHolds(0)); -} - -TEST(VforkTest, ParentStopsUntilChildExecves_NoRandomSave) { - ExecveArray const owned_child_argv = {"/proc/self/exe", "--vfork_test_child"}; - char* const* const child_argv = owned_child_argv.get(); - - const auto test = [&] { - const int64_t start = MonotonicNow(); - - pid_t pid = vfork(); - if (pid == 0) { - SleepSafe(kChildDelay); - execve(child_argv[0], child_argv, /* envp = */ nullptr); - _exit(errno); - } - // Don't attempt save/restore until after recording end_time, - // since the test expects an upper bound on the time spent - // stopped. - int saved_errno = errno; - const int64_t end = MonotonicNow(); - errno = saved_errno; - TEST_PCHECK_MSG(pid > 0, "vfork failed"); - MaybeSave(); - - absl::Duration dur = absl::Nanoseconds(end - start); - - // The parent should resume execution after execve, but before - // the post-execve test child exits. - TEST_CHECK(dur >= kChildDelay); - TEST_CHECK(dur <= 2 * kChildDelay); - - int status = 0; - TEST_PCHECK(RetryEINTR(waitpid)(pid, &status, 0)); - TEST_CHECK(WIFEXITED(status)); - TEST_CHECK(WEXITSTATUS(status) == kChildExitCode); - }; - - EXPECT_THAT(InForkedProcess(test), IsPosixErrorOkAndHolds(0)); -} - -// A vfork child does not unstop the parent a second time when it exits after -// exec. -TEST(VforkTest, ExecedChildExitDoesntUnstopParent_NoRandomSave) { - ExecveArray const owned_child_argv = {"/proc/self/exe", "--vfork_test_child"}; - char* const* const child_argv = owned_child_argv.get(); - - const auto test = [&] { - pid_t pid1 = vfork(); - if (pid1 == 0) { - execve(child_argv[0], child_argv, /* envp = */ nullptr); - _exit(errno); - } - TEST_PCHECK_MSG(pid1 > 0, "vfork failed"); - MaybeSave(); - - // pid1 exec'd and is now sleeping. - SleepSafe(kChildDelay / 2); - - const int64_t start = MonotonicNow(); - - pid_t pid2 = vfork(); - if (pid2 == 0) { - SleepSafe(kChildDelay); - _exit(kChildExitCode); - } - TEST_PCHECK_MSG(pid2 > 0, "vfork failed"); - MaybeSave(); - - const int64_t end = MonotonicNow(); - - absl::Duration dur = absl::Nanoseconds(end - start); - - // The parent should resume execution only after pid2 exits, not - // when pid1 exits. - TEST_CHECK(dur >= kChildDelay); - - int status = 0; - TEST_PCHECK(RetryEINTR(waitpid)(pid1, &status, 0)); - TEST_CHECK(WIFEXITED(status)); - TEST_CHECK(WEXITSTATUS(status) == kChildExitCode); - - TEST_PCHECK(RetryEINTR(waitpid)(pid2, &status, 0)); - TEST_CHECK(WIFEXITED(status)); - TEST_CHECK(WEXITSTATUS(status) == kChildExitCode); - }; - - EXPECT_THAT(InForkedProcess(test), IsPosixErrorOkAndHolds(0)); -} - -int RunChild() { - SleepSafe(kChildDelay); - return kChildExitCode; -} - -} // namespace - -} // namespace testing -} // namespace gvisor - -int main(int argc, char** argv) { - gvisor::testing::TestInit(&argc, &argv); - - if (absl::GetFlag(FLAGS_vfork_test_child)) { - return gvisor::testing::RunChild(); - } - - return RUN_ALL_TESTS(); -} diff --git a/test/syscalls/linux/vsyscall.cc b/test/syscalls/linux/vsyscall.cc deleted file mode 100644 index 2c2303358..000000000 --- a/test/syscalls/linux/vsyscall.cc +++ /dev/null @@ -1,44 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <time.h> - -#include "gtest/gtest.h" -#include "test/util/proc_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -time_t vsyscall_time(time_t* t) { - constexpr uint64_t kVsyscallTimeEntry = 0xffffffffff600400; - return reinterpret_cast<time_t (*)(time_t*)>(kVsyscallTimeEntry)(t); -} - -TEST(VsyscallTest, VsyscallAlwaysAvailableOnGvisor) { - SKIP_IF(!IsRunningOnGvisor()); - // Vsyscall is always advertised by gvisor. - EXPECT_TRUE(ASSERT_NO_ERRNO_AND_VALUE(IsVsyscallEnabled())); - // Vsyscall should always works on gvisor. - time_t t; - EXPECT_THAT(vsyscall_time(&t), SyscallSucceeds()); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/wait.cc b/test/syscalls/linux/wait.cc deleted file mode 100644 index 944149d5e..000000000 --- a/test/syscalls/linux/wait.cc +++ /dev/null @@ -1,913 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <signal.h> -#include <sys/mman.h> -#include <sys/ptrace.h> -#include <sys/resource.h> -#include <sys/time.h> -#include <sys/types.h> -#include <sys/wait.h> -#include <unistd.h> - -#include <functional> -#include <tuple> -#include <vector> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "absl/strings/str_cat.h" -#include "absl/synchronization/mutex.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/util/cleanup.h" -#include "test/util/file_descriptor.h" -#include "test/util/logging.h" -#include "test/util/multiprocess_util.h" -#include "test/util/posix_error.h" -#include "test/util/signal_util.h" -#include "test/util/test_util.h" -#include "test/util/thread_util.h" -#include "test/util/time_util.h" - -using ::testing::UnorderedElementsAre; - -// These unit tests focus on the wait4(2) system call, but include a basic -// checks for the i386 waitpid(2) syscall, which is a subset of wait4(2). -// -// NOTE(b/22640830,b/27680907,b/29049891): Some functionality is not tested as -// it is not currently supported by gVisor: -// * Process groups. -// * Core dump status (WCOREDUMP). -// -// Tests for waiting on stopped/continued children are in sigstop.cc. - -namespace gvisor { -namespace testing { - -namespace { - -// The CloneChild function seems to need more than one page of stack space. -static const size_t kStackSize = 2 * kPageSize; - -// The child thread created in CloneAndExit runs this function. -// This child does not have the TLS setup, so it must not use glibc functions. -int CloneChild(void* priv) { - int64_t sleep = reinterpret_cast<int64_t>(priv); - SleepSafe(absl::Seconds(sleep)); - - // glibc's _exit(2) function wrapper will helpfully call exit_group(2), - // exiting the entire process. - syscall(__NR_exit, 0); - return 1; -} - -// ForkAndExit forks a child process which exits with exit_code, after -// sleeping for the specified duration (seconds). -pid_t ForkAndExit(int exit_code, int64_t sleep) { - pid_t child = fork(); - if (child == 0) { - SleepSafe(absl::Seconds(sleep)); - _exit(exit_code); - } - return child; -} - -int64_t clock_gettime_nsecs(clockid_t id) { - struct timespec ts; - TEST_PCHECK(clock_gettime(id, &ts) == 0); - return (ts.tv_sec * 1000000000 + ts.tv_nsec); -} - -void spin(int64_t sec) { - int64_t ns = sec * 1000000000; - int64_t start = clock_gettime_nsecs(CLOCK_THREAD_CPUTIME_ID); - int64_t end = start + ns; - - do { - constexpr int kLoopCount = 1000000; // large and arbitrary - // volatile to prevent the compiler from skipping this loop. - for (volatile int i = 0; i < kLoopCount; i++) { - } - } while (clock_gettime_nsecs(CLOCK_THREAD_CPUTIME_ID) < end); -} - -// ForkSpinAndExit forks a child process which exits with exit_code, after -// spinning for the specified duration (seconds). -pid_t ForkSpinAndExit(int exit_code, int64_t spintime) { - pid_t child = fork(); - if (child == 0) { - spin(spintime); - _exit(exit_code); - } - return child; -} - -absl::Duration RusageCpuTime(const struct rusage& ru) { - return absl::DurationFromTimeval(ru.ru_utime) + - absl::DurationFromTimeval(ru.ru_stime); -} - -// Returns the address of the top of the stack. -// Free with FreeStack. -uintptr_t AllocStack() { - void* addr = mmap(nullptr, kStackSize, PROT_READ | PROT_WRITE, - MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); - - if (addr == MAP_FAILED) { - return reinterpret_cast<uintptr_t>(MAP_FAILED); - } - - return reinterpret_cast<uintptr_t>(addr) + kStackSize; -} - -// Frees a stack page allocated with AllocStack. -int FreeStack(uintptr_t addr) { - addr -= kStackSize; - return munmap(reinterpret_cast<void*>(addr), kPageSize); -} - -// CloneAndExit clones a child thread, which exits with 0 after sleeping for -// the specified duration (must be in seconds). extra_flags are ORed against -// the standard clone(2) flags. -int CloneAndExit(int64_t sleep, uintptr_t stack, int extra_flags) { - return clone(CloneChild, reinterpret_cast<void*>(stack), - CLONE_FILES | CLONE_FS | CLONE_SIGHAND | CLONE_VM | extra_flags, - reinterpret_cast<void*>(sleep)); -} - -// Simple wrappers around wait4(2) and waitid(2) that ignore interrupts. -constexpr auto Wait4 = RetryEINTR(wait4); -constexpr auto Waitid = RetryEINTR(waitid); - -// Fixture for tests parameterized by a function that waits for any child to -// exit with the given options, checks that it exited with the given code, and -// then returns its PID. -// -// N.B. These tests run in a multi-threaded environment. We assume that -// background threads do not create child processes and are not themselves -// created with clone(... | SIGCHLD). Either may cause these tests to -// erroneously wait on child processes/threads. -class WaitAnyChildTest : public ::testing::TestWithParam< - std::function<PosixErrorOr<pid_t>(int, int)>> { - protected: - PosixErrorOr<pid_t> WaitAny(int code) { return WaitAnyWithOptions(code, 0); } - - PosixErrorOr<pid_t> WaitAnyWithOptions(int code, int options) { - return GetParam()(code, options); - } -}; - -// Wait for any child to exit. -TEST_P(WaitAnyChildTest, Fork) { - pid_t child; - ASSERT_THAT(child = ForkAndExit(0, 0), SyscallSucceeds()); - - EXPECT_THAT(WaitAny(0), IsPosixErrorOkAndHolds(child)); -} - -// Call wait4 for any process after the child has already exited. -TEST_P(WaitAnyChildTest, AfterExit) { - pid_t child; - ASSERT_THAT(child = ForkAndExit(0, 0), SyscallSucceeds()); - - absl::SleepFor(absl::Seconds(5)); - - EXPECT_THAT(WaitAny(0), IsPosixErrorOkAndHolds(child)); -} - -// Wait for multiple children to exit, waiting for either at a time. -TEST_P(WaitAnyChildTest, MultipleFork) { - pid_t child1, child2; - ASSERT_THAT(child1 = ForkAndExit(0, 0), SyscallSucceeds()); - ASSERT_THAT(child2 = ForkAndExit(0, 0), SyscallSucceeds()); - - std::vector<pid_t> pids; - pids.push_back(ASSERT_NO_ERRNO_AND_VALUE(WaitAny(0))); - pids.push_back(ASSERT_NO_ERRNO_AND_VALUE(WaitAny(0))); - EXPECT_THAT(pids, UnorderedElementsAre(child1, child2)); -} - -// Wait for any child to exit. -// A non-CLONE_THREAD child which sends SIGCHLD upon exit behaves much like -// a forked process. -TEST_P(WaitAnyChildTest, CloneSIGCHLD) { - uintptr_t stack; - ASSERT_THAT(stack = AllocStack(), SyscallSucceeds()); - auto free = - Cleanup([stack] { ASSERT_THAT(FreeStack(stack), SyscallSucceeds()); }); - - int child; - ASSERT_THAT(child = CloneAndExit(0, stack, SIGCHLD), SyscallSucceeds()); - - EXPECT_THAT(WaitAny(0), IsPosixErrorOkAndHolds(child)); -} - -// Wait for a child thread and process. -TEST_P(WaitAnyChildTest, ForkAndClone) { - pid_t process; - ASSERT_THAT(process = ForkAndExit(0, 0), SyscallSucceeds()); - - uintptr_t stack; - ASSERT_THAT(stack = AllocStack(), SyscallSucceeds()); - auto free = - Cleanup([stack] { ASSERT_THAT(FreeStack(stack), SyscallSucceeds()); }); - - int thread; - // Send SIGCHLD for normal wait semantics. - ASSERT_THAT(thread = CloneAndExit(0, stack, SIGCHLD), SyscallSucceeds()); - - std::vector<pid_t> pids; - pids.push_back(ASSERT_NO_ERRNO_AND_VALUE(WaitAny(0))); - pids.push_back(ASSERT_NO_ERRNO_AND_VALUE(WaitAny(0))); - EXPECT_THAT(pids, UnorderedElementsAre(process, thread)); -} - -// Return immediately if no child has exited. -TEST_P(WaitAnyChildTest, WaitWNOHANG) { - EXPECT_THAT(WaitAnyWithOptions(0, WNOHANG), - PosixErrorIs(ECHILD, ::testing::_)); -} - -// Bad options passed -TEST_P(WaitAnyChildTest, BadOption) { - EXPECT_THAT(WaitAnyWithOptions(0, 123456), - PosixErrorIs(EINVAL, ::testing::_)); -} - -TEST_P(WaitAnyChildTest, WaitedChildRusage) { - struct rusage before; - ASSERT_THAT(getrusage(RUSAGE_CHILDREN, &before), SyscallSucceeds()); - - pid_t child; - constexpr absl::Duration kSpin = absl::Seconds(3); - ASSERT_THAT(child = ForkSpinAndExit(0, absl::ToInt64Seconds(kSpin)), - SyscallSucceeds()); - ASSERT_THAT(WaitAny(0), IsPosixErrorOkAndHolds(child)); - - struct rusage after; - ASSERT_THAT(getrusage(RUSAGE_CHILDREN, &after), SyscallSucceeds()); - - EXPECT_GE(RusageCpuTime(after) - RusageCpuTime(before), kSpin); -} - -TEST_P(WaitAnyChildTest, IgnoredChildRusage) { - // "POSIX.1-2001 specifies that if the disposition of SIGCHLD is - // set to SIG_IGN or the SA_NOCLDWAIT flag is set for SIGCHLD (see - // sigaction(2)), then children that terminate do not become zombies and a - // call to wait() or waitpid() will block until all children have terminated, - // and then fail with errno set to ECHILD." - waitpid(2) - // - // "RUSAGE_CHILDREN: Return resource usage statistics for all children of the - // calling process that have terminated *and been waited for*." - - // getrusage(2), emphasis added - - struct sigaction sa; - sa.sa_handler = SIG_IGN; - const auto cleanup_sigact = - ASSERT_NO_ERRNO_AND_VALUE(ScopedSigaction(SIGCHLD, sa)); - - struct rusage before; - ASSERT_THAT(getrusage(RUSAGE_CHILDREN, &before), SyscallSucceeds()); - - const absl::Duration start = - absl::Nanoseconds(clock_gettime_nsecs(CLOCK_MONOTONIC)); - - constexpr absl::Duration kSpin = absl::Seconds(3); - - // ForkAndSpin uses CLOCK_THREAD_CPUTIME_ID, which is lower resolution than, - // and may diverge from, CLOCK_MONOTONIC, so we allow a small grace period but - // still check that we blocked for a while. - constexpr absl::Duration kSpinGrace = absl::Milliseconds(100); - - pid_t child; - ASSERT_THAT(child = ForkSpinAndExit(0, absl::ToInt64Seconds(kSpin)), - SyscallSucceeds()); - ASSERT_THAT(WaitAny(0), PosixErrorIs(ECHILD, ::testing::_)); - const absl::Duration end = - absl::Nanoseconds(clock_gettime_nsecs(CLOCK_MONOTONIC)); - EXPECT_GE(end - start, kSpin - kSpinGrace); - - struct rusage after; - ASSERT_THAT(getrusage(RUSAGE_CHILDREN, &after), SyscallSucceeds()); - EXPECT_EQ(before.ru_utime.tv_sec, after.ru_utime.tv_sec); - EXPECT_EQ(before.ru_utime.tv_usec, after.ru_utime.tv_usec); - EXPECT_EQ(before.ru_stime.tv_sec, after.ru_stime.tv_sec); - EXPECT_EQ(before.ru_stime.tv_usec, after.ru_stime.tv_usec); -} - -INSTANTIATE_TEST_SUITE_P( - Waiters, WaitAnyChildTest, - ::testing::Values( - [](int code, int options) -> PosixErrorOr<pid_t> { - int status; - auto const pid = Wait4(-1, &status, options, nullptr); - MaybeSave(); - if (pid < 0) { - return PosixError(errno, "wait4"); - } - if (!WIFEXITED(status) || WEXITSTATUS(status) != code) { - return PosixError( - EINVAL, absl::StrCat("unexpected wait status: got ", status, - ", wanted ", code)); - } - return static_cast<pid_t>(pid); - }, - [](int code, int options) -> PosixErrorOr<pid_t> { - siginfo_t si; - auto const rv = Waitid(P_ALL, 0, &si, WEXITED | options); - MaybeSave(); - if (rv < 0) { - return PosixError(errno, "waitid"); - } - if (si.si_signo != SIGCHLD) { - return PosixError( - EINVAL, absl::StrCat("unexpected signo: got ", si.si_signo, - ", wanted ", SIGCHLD)); - } - if (si.si_status != code) { - return PosixError( - EINVAL, absl::StrCat("unexpected status: got ", si.si_status, - ", wanted ", code)); - } - if (si.si_code != CLD_EXITED) { - return PosixError(EINVAL, - absl::StrCat("unexpected code: got ", si.si_code, - ", wanted ", CLD_EXITED)); - } - auto const uid = getuid(); - if (si.si_uid != uid) { - return PosixError(EINVAL, - absl::StrCat("unexpected uid: got ", si.si_uid, - ", wanted ", uid)); - } - return static_cast<pid_t>(si.si_pid); - })); - -// Fixture for tests parameterized by a (sysno, function) tuple. The function -// takes the PID of a specific child to wait for, waits for it to exit, and -// checks that it exits with the given code. -class WaitSpecificChildTest - : public ::testing::TestWithParam< - std::tuple<int, std::function<PosixError(pid_t, int, int)>>> { - protected: - int Sysno() { return std::get<0>(GetParam()); } - - PosixError WaitForWithOptions(pid_t pid, int options, int code) { - return std::get<1>(GetParam())(pid, options, code); - } - - PosixError WaitFor(pid_t pid, int code) { - return std::get<1>(GetParam())(pid, 0, code); - } -}; - -// Wait for specific child to exit. -TEST_P(WaitSpecificChildTest, Fork) { - pid_t child; - ASSERT_THAT(child = ForkAndExit(0, 0), SyscallSucceeds()); - - EXPECT_NO_ERRNO(WaitFor(child, 0)); -} - -// Non-zero exit codes are correctly propagated. -TEST_P(WaitSpecificChildTest, NormalExit) { - pid_t child; - ASSERT_THAT(child = ForkAndExit(42, 0), SyscallSucceeds()); - - EXPECT_NO_ERRNO(WaitFor(child, 42)); -} - -// Wait for multiple children to exit. -TEST_P(WaitSpecificChildTest, MultipleFork) { - pid_t child1, child2; - ASSERT_THAT(child1 = ForkAndExit(0, 0), SyscallSucceeds()); - ASSERT_THAT(child2 = ForkAndExit(0, 0), SyscallSucceeds()); - - EXPECT_NO_ERRNO(WaitFor(child1, 0)); - EXPECT_NO_ERRNO(WaitFor(child2, 0)); -} - -// Wait for multiple children to exit, out of the order they were created. -TEST_P(WaitSpecificChildTest, MultipleForkOutOfOrder) { - pid_t child1, child2; - ASSERT_THAT(child1 = ForkAndExit(0, 0), SyscallSucceeds()); - ASSERT_THAT(child2 = ForkAndExit(0, 0), SyscallSucceeds()); - - EXPECT_NO_ERRNO(WaitFor(child2, 0)); - EXPECT_NO_ERRNO(WaitFor(child1, 0)); -} - -// Wait for specific child to exit, entering wait4 before the exit occurs. -TEST_P(WaitSpecificChildTest, ForkSleep) { - pid_t child; - ASSERT_THAT(child = ForkAndExit(0, 5), SyscallSucceeds()); - - EXPECT_NO_ERRNO(WaitFor(child, 0)); -} - -// Wait should block until the child exits. -TEST_P(WaitSpecificChildTest, ForkBlock) { - pid_t child; - - auto start = absl::Now(); - ASSERT_THAT(child = ForkAndExit(0, 5), SyscallSucceeds()); - - EXPECT_NO_ERRNO(WaitFor(child, 0)); - - EXPECT_GE(absl::Now() - start, absl::Seconds(5)); -} - -// Waiting after the child has already exited returns immediately. -TEST_P(WaitSpecificChildTest, AfterExit) { - pid_t child; - ASSERT_THAT(child = ForkAndExit(0, 0), SyscallSucceeds()); - - absl::SleepFor(absl::Seconds(5)); - - EXPECT_NO_ERRNO(WaitFor(child, 0)); -} - -// Wait for child of sibling thread. -TEST_P(WaitSpecificChildTest, SiblingChildren) { - absl::Mutex mu; - pid_t child; - bool ready = false; - bool stop = false; - - ScopedThread t([&] { - absl::MutexLock ml(&mu); - EXPECT_THAT(child = ForkAndExit(0, 0), SyscallSucceeds()); - ready = true; - mu.Await(absl::Condition(&stop)); - }); - - // N.B. This must be declared after ScopedThread, so it is destructed first, - // thus waking the thread. - absl::MutexLock ml(&mu); - mu.Await(absl::Condition(&ready)); - - EXPECT_NO_ERRNO(WaitFor(child, 0)); - - // Keep the sibling alive until after we've waited so the child isn't - // reparented. - stop = true; -} - -// Waiting for child of sibling thread not allowed with WNOTHREAD. -TEST_P(WaitSpecificChildTest, SiblingChildrenWNOTHREAD) { - // Linux added WNOTHREAD support to waitid(2) in - // 91c4e8ea8f05916df0c8a6f383508ac7c9e10dba ("wait: allow sys_waitid() to - // accept __WNOTHREAD/__WCLONE/__WALL"). i.e., Linux 4.7. - // - // Skip the test if it isn't supported yet. - if (Sysno() == SYS_waitid) { - int ret = waitid(P_ALL, 0, nullptr, WEXITED | WNOHANG | __WNOTHREAD); - SKIP_IF(ret < 0 && errno == EINVAL); - } - - absl::Mutex mu; - pid_t child; - bool ready = false; - bool stop = false; - - ScopedThread t([&] { - absl::MutexLock ml(&mu); - EXPECT_THAT(child = ForkAndExit(0, 0), SyscallSucceeds()); - ready = true; - mu.Await(absl::Condition(&stop)); - - // This thread can wait on child. - EXPECT_NO_ERRNO(WaitForWithOptions(child, __WNOTHREAD, 0)); - }); - - // N.B. This must be declared after ScopedThread, so it is destructed first, - // thus waking the thread. - absl::MutexLock ml(&mu); - mu.Await(absl::Condition(&ready)); - - // This thread can't wait on child. - EXPECT_THAT(WaitForWithOptions(child, __WNOTHREAD, 0), - PosixErrorIs(ECHILD, ::testing::_)); - - // Keep the sibling alive until after we've waited so the child isn't - // reparented. - stop = true; -} - -// Wait for specific child to exit. -// A non-CLONE_THREAD child which sends SIGCHLD upon exit behaves much like -// a forked process. -TEST_P(WaitSpecificChildTest, CloneSIGCHLD) { - uintptr_t stack; - ASSERT_THAT(stack = AllocStack(), SyscallSucceeds()); - auto free = - Cleanup([stack] { ASSERT_THAT(FreeStack(stack), SyscallSucceeds()); }); - - int child; - ASSERT_THAT(child = CloneAndExit(0, stack, SIGCHLD), SyscallSucceeds()); - - EXPECT_NO_ERRNO(WaitFor(child, 0)); -} - -// Wait for specific child to exit. -// A non-CLONE_THREAD child which does not send SIGCHLD upon exit can be waited -// on, but returns ECHILD. -TEST_P(WaitSpecificChildTest, CloneNoSIGCHLD) { - uintptr_t stack; - ASSERT_THAT(stack = AllocStack(), SyscallSucceeds()); - auto free = - Cleanup([stack] { ASSERT_THAT(FreeStack(stack), SyscallSucceeds()); }); - - int child; - ASSERT_THAT(child = CloneAndExit(0, stack, 0), SyscallSucceeds()); - - EXPECT_THAT(WaitFor(child, 0), PosixErrorIs(ECHILD, ::testing::_)); -} - -// Waiting after the child has already exited returns immediately. -TEST_P(WaitSpecificChildTest, CloneAfterExit) { - uintptr_t stack; - ASSERT_THAT(stack = AllocStack(), SyscallSucceeds()); - auto free = - Cleanup([stack] { ASSERT_THAT(FreeStack(stack), SyscallSucceeds()); }); - - int child; - // Send SIGCHLD for normal wait semantics. - ASSERT_THAT(child = CloneAndExit(0, stack, SIGCHLD), SyscallSucceeds()); - - absl::SleepFor(absl::Seconds(5)); - - EXPECT_NO_ERRNO(WaitFor(child, 0)); -} - -// A CLONE_THREAD child cannot be waited on. -TEST_P(WaitSpecificChildTest, CloneThread) { - uintptr_t stack; - ASSERT_THAT(stack = AllocStack(), SyscallSucceeds()); - auto free = - Cleanup([stack] { ASSERT_THAT(FreeStack(stack), SyscallSucceeds()); }); - - int child; - ASSERT_THAT(child = CloneAndExit(15, stack, CLONE_THREAD), SyscallSucceeds()); - auto start = absl::Now(); - - EXPECT_THAT(WaitFor(child, 0), PosixErrorIs(ECHILD, ::testing::_)); - - // Ensure wait4 didn't block. - EXPECT_LE(absl::Now() - start, absl::Seconds(10)); - - // Since we can't wait on the child, we sleep to try to avoid freeing its - // stack before it exits. - absl::SleepFor(absl::Seconds(5)); -} - -// A child that does not send a SIGCHLD on exit may be waited on with -// the __WCLONE flag. -TEST_P(WaitSpecificChildTest, CloneWCLONE) { - // Linux added WCLONE support to waitid(2) in - // 91c4e8ea8f05916df0c8a6f383508ac7c9e10dba ("wait: allow sys_waitid() to - // accept __WNOTHREAD/__WCLONE/__WALL"). i.e., Linux 4.7. - // - // Skip the test if it isn't supported yet. - if (Sysno() == SYS_waitid) { - int ret = waitid(P_ALL, 0, nullptr, WEXITED | WNOHANG | __WCLONE); - SKIP_IF(ret < 0 && errno == EINVAL); - } - - uintptr_t stack; - ASSERT_THAT(stack = AllocStack(), SyscallSucceeds()); - auto free = - Cleanup([stack] { ASSERT_THAT(FreeStack(stack), SyscallSucceeds()); }); - - int child; - ASSERT_THAT(child = CloneAndExit(0, stack, 0), SyscallSucceeds()); - - EXPECT_NO_ERRNO(WaitForWithOptions(child, __WCLONE, 0)); -} - -// A forked child cannot be waited on with WCLONE. -TEST_P(WaitSpecificChildTest, ForkWCLONE) { - // Linux added WCLONE support to waitid(2) in - // 91c4e8ea8f05916df0c8a6f383508ac7c9e10dba ("wait: allow sys_waitid() to - // accept __WNOTHREAD/__WCLONE/__WALL"). i.e., Linux 4.7. - // - // Skip the test if it isn't supported yet. - if (Sysno() == SYS_waitid) { - int ret = waitid(P_ALL, 0, nullptr, WEXITED | WNOHANG | __WCLONE); - SKIP_IF(ret < 0 && errno == EINVAL); - } - - pid_t child; - ASSERT_THAT(child = ForkAndExit(0, 0), SyscallSucceeds()); - - EXPECT_THAT(WaitForWithOptions(child, WNOHANG | __WCLONE, 0), - PosixErrorIs(ECHILD, ::testing::_)); - - EXPECT_NO_ERRNO(WaitFor(child, 0)); -} - -// Any type of child can be waited on with WALL. -TEST_P(WaitSpecificChildTest, WALL) { - // Linux added WALL support to waitid(2) in - // 91c4e8ea8f05916df0c8a6f383508ac7c9e10dba ("wait: allow sys_waitid() to - // accept __WNOTHREAD/__WCLONE/__WALL"). i.e., Linux 4.7. - // - // Skip the test if it isn't supported yet. - if (Sysno() == SYS_waitid) { - int ret = waitid(P_ALL, 0, nullptr, WEXITED | WNOHANG | __WALL); - SKIP_IF(ret < 0 && errno == EINVAL); - } - - pid_t child; - ASSERT_THAT(child = ForkAndExit(0, 0), SyscallSucceeds()); - - EXPECT_NO_ERRNO(WaitForWithOptions(child, __WALL, 0)); - - uintptr_t stack; - ASSERT_THAT(stack = AllocStack(), SyscallSucceeds()); - auto free = - Cleanup([stack] { ASSERT_THAT(FreeStack(stack), SyscallSucceeds()); }); - - ASSERT_THAT(child = CloneAndExit(0, stack, 0), SyscallSucceeds()); - - EXPECT_NO_ERRNO(WaitForWithOptions(child, __WALL, 0)); -} - -// Return ECHILD for bad child. -TEST_P(WaitSpecificChildTest, BadChild) { - EXPECT_THAT(WaitFor(42, 0), PosixErrorIs(ECHILD, ::testing::_)); -} - -// Wait for a child process that only exits after calling execve(2) from a -// non-leader thread. -TEST_P(WaitSpecificChildTest, AfterChildExecve) { - ExecveArray const owned_child_argv = {"/bin/true"}; - char* const* const child_argv = owned_child_argv.get(); - - uintptr_t stack; - ASSERT_THAT(stack = AllocStack(), SyscallSucceeds()); - auto free = - Cleanup([stack] { ASSERT_THAT(FreeStack(stack), SyscallSucceeds()); }); - - pid_t const child = fork(); - if (child == 0) { - // Give the parent some time to start waiting. - SleepSafe(absl::Seconds(5)); - // Pass CLONE_VFORK to block the original thread in the child process until - // the clone thread calls execve, annihilating them both. (This means that - // if clone returns at all, something went wrong.) - // - // N.B. clone(2) is not officially async-signal-safe, but at minimum glibc's - // x86_64 implementation is safe. See glibc - // sysdeps/unix/sysv/linux/x86_64/clone.S. - clone( - +[](void* arg) { - auto child_argv = static_cast<char* const*>(arg); - execve(child_argv[0], child_argv, /* envp = */ nullptr); - return errno; - }, - reinterpret_cast<void*>(stack), - CLONE_FILES | CLONE_FS | CLONE_SIGHAND | CLONE_THREAD | CLONE_VM | - CLONE_VFORK, - const_cast<char**>(child_argv)); - _exit(errno); - } - ASSERT_THAT(child, SyscallSucceeds()); - EXPECT_NO_ERRNO(WaitFor(child, 0)); -} - -PosixError CheckWait4(pid_t pid, int options, int code) { - int status; - auto const rv = Wait4(pid, &status, options, nullptr); - MaybeSave(); - if (rv < 0) { - return PosixError(errno, "wait4"); - } else if (rv != pid) { - return PosixError( - EINVAL, absl::StrCat("unexpected pid: got ", rv, ", wanted ", pid)); - } - if (!WIFEXITED(status) || WEXITSTATUS(status) != code) { - return PosixError(EINVAL, absl::StrCat("unexpected wait status: got ", - status, ", wanted ", code)); - } - return NoError(); -}; - -PosixError CheckWaitid(pid_t pid, int options, int code) { - siginfo_t si; - auto const rv = Waitid(P_PID, pid, &si, options | WEXITED); - MaybeSave(); - if (rv < 0) { - return PosixError(errno, "waitid"); - } - if (si.si_pid != pid) { - return PosixError(EINVAL, absl::StrCat("unexpected pid: got ", si.si_pid, - ", wanted ", pid)); - } - if (si.si_signo != SIGCHLD) { - return PosixError(EINVAL, absl::StrCat("unexpected signo: got ", - si.si_signo, ", wanted ", SIGCHLD)); - } - if (si.si_status != code) { - return PosixError(EINVAL, absl::StrCat("unexpected status: got ", - si.si_status, ", wanted ", code)); - } - if (si.si_code != CLD_EXITED) { - return PosixError(EINVAL, absl::StrCat("unexpected code: got ", si.si_code, - ", wanted ", CLD_EXITED)); - } - return NoError(); -} - -INSTANTIATE_TEST_SUITE_P( - Waiters, WaitSpecificChildTest, - ::testing::Values(std::make_tuple(SYS_wait4, CheckWait4), - std::make_tuple(SYS_waitid, CheckWaitid))); - -// WIFEXITED, WIFSIGNALED, WTERMSIG indicate signal exit. -TEST(WaitTest, SignalExit) { - pid_t child; - ASSERT_THAT(child = ForkAndExit(0, 10), SyscallSucceeds()); - - EXPECT_THAT(kill(child, SIGKILL), SyscallSucceeds()); - - int status; - EXPECT_THAT(Wait4(child, &status, 0, nullptr), - SyscallSucceedsWithValue(child)); - - EXPECT_FALSE(WIFEXITED(status)); - EXPECT_TRUE(WIFSIGNALED(status)); - EXPECT_EQ(SIGKILL, WTERMSIG(status)); -} - -// waitid requires at least one option. -TEST(WaitTest, WaitidOptions) { - EXPECT_THAT(Waitid(P_ALL, 0, nullptr, 0), SyscallFailsWithErrno(EINVAL)); -} - -// waitid does not wait for a child to exit if not passed WEXITED. -TEST(WaitTest, WaitidNoWEXITED) { - pid_t child; - ASSERT_THAT(child = ForkAndExit(0, 0), SyscallSucceeds()); - EXPECT_THAT(Waitid(P_ALL, 0, nullptr, WSTOPPED), - SyscallFailsWithErrno(ECHILD)); - EXPECT_THAT(Waitid(P_ALL, 0, nullptr, WEXITED), SyscallSucceeds()); -} - -// WNOWAIT allows the same wait result to be returned again. -TEST(WaitTest, WaitidWNOWAIT) { - pid_t child; - ASSERT_THAT(child = ForkAndExit(42, 0), SyscallSucceeds()); - - siginfo_t info; - ASSERT_THAT(Waitid(P_PID, child, &info, WEXITED | WNOWAIT), - SyscallSucceeds()); - EXPECT_EQ(child, info.si_pid); - EXPECT_EQ(SIGCHLD, info.si_signo); - EXPECT_EQ(CLD_EXITED, info.si_code); - EXPECT_EQ(42, info.si_status); - - ASSERT_THAT(Waitid(P_PID, child, &info, WEXITED), SyscallSucceeds()); - EXPECT_EQ(child, info.si_pid); - EXPECT_EQ(SIGCHLD, info.si_signo); - EXPECT_EQ(CLD_EXITED, info.si_code); - EXPECT_EQ(42, info.si_status); - - EXPECT_THAT(Waitid(P_PID, child, &info, WEXITED), - SyscallFailsWithErrno(ECHILD)); -} - -// waitpid(pid, status, options) is equivalent to -// wait4(pid, status, options, nullptr). -// This is a dedicated syscall on i386, glibc maps it to wait4 on amd64. -TEST(WaitTest, WaitPid) { - pid_t child; - ASSERT_THAT(child = ForkAndExit(42, 0), SyscallSucceeds()); - - int status; - EXPECT_THAT(RetryEINTR(waitpid)(child, &status, 0), - SyscallSucceedsWithValue(child)); - - EXPECT_TRUE(WIFEXITED(status)); - EXPECT_EQ(42, WEXITSTATUS(status)); -} - -// Test that signaling a zombie succeeds. This is a signals test that is in this -// file for some reason. -TEST(WaitTest, KillZombie) { - pid_t child; - ASSERT_THAT(child = ForkAndExit(42, 0), SyscallSucceeds()); - - // Sleep for three seconds to ensure the child has exited. - absl::SleepFor(absl::Seconds(3)); - - // The child is now a zombie. Check that killing it returns 0. - EXPECT_THAT(kill(child, SIGTERM), SyscallSucceeds()); - EXPECT_THAT(kill(child, 0), SyscallSucceeds()); - - EXPECT_THAT(Wait4(child, nullptr, 0, nullptr), - SyscallSucceedsWithValue(child)); -} - -TEST(WaitTest, Wait4Rusage) { - pid_t child; - constexpr absl::Duration kSpin = absl::Seconds(3); - ASSERT_THAT(child = ForkSpinAndExit(21, absl::ToInt64Seconds(kSpin)), - SyscallSucceeds()); - - int status; - struct rusage rusage = {}; - ASSERT_THAT(Wait4(child, &status, 0, &rusage), - SyscallSucceedsWithValue(child)); - - EXPECT_TRUE(WIFEXITED(status)); - EXPECT_EQ(21, WEXITSTATUS(status)); - - EXPECT_GE(RusageCpuTime(rusage), kSpin); -} - -TEST(WaitTest, WaitidRusage) { - pid_t child; - constexpr absl::Duration kSpin = absl::Seconds(3); - ASSERT_THAT(child = ForkSpinAndExit(27, absl::ToInt64Seconds(kSpin)), - SyscallSucceeds()); - - siginfo_t si = {}; - struct rusage rusage = {}; - - // From waitid(2): - // The raw waitid() system call takes a fifth argument, of type - // struct rusage *. If this argument is non-NULL, then it is used - // to return resource usage information about the child, in the - // same manner as wait4(2). - EXPECT_THAT( - RetryEINTR(syscall)(SYS_waitid, P_PID, child, &si, WEXITED, &rusage), - SyscallSucceeds()); - EXPECT_EQ(si.si_signo, SIGCHLD); - EXPECT_EQ(si.si_code, CLD_EXITED); - EXPECT_EQ(si.si_status, 27); - EXPECT_EQ(si.si_pid, child); - - EXPECT_GE(RusageCpuTime(rusage), kSpin); -} - -// After bf959931ddb88c4e4366e96dd22e68fa0db9527c ("wait/ptrace: assume __WALL -// if the child is traced") (Linux 4.7), tracees are always eligible for -// waiting, regardless of type. -TEST(WaitTest, TraceeWALL) { - int fds[2]; - ASSERT_THAT(pipe(fds), SyscallSucceeds()); - FileDescriptor rfd(fds[0]); - FileDescriptor wfd(fds[1]); - - pid_t child = fork(); - if (child == 0) { - // Child. - rfd.reset(); - - TEST_PCHECK(ptrace(PTRACE_TRACEME, 0, nullptr, nullptr) == 0); - - // Notify parent that we're now a tracee. - wfd.reset(); - - _exit(0); - } - ASSERT_THAT(child, SyscallSucceeds()); - - wfd.reset(); - - // Wait for child to become tracee. - char c; - EXPECT_THAT(ReadFd(rfd.get(), &c, sizeof(c)), SyscallSucceedsWithValue(0)); - - // We can wait on the fork child with WCLONE, as it is a tracee. - int status; - if (IsRunningOnGvisor()) { - ASSERT_THAT(Wait4(child, &status, __WCLONE, nullptr), - SyscallSucceedsWithValue(child)); - - EXPECT_TRUE(WIFEXITED(status) && WEXITSTATUS(status) == 0) << status; - } else { - // On older versions of Linux, we may get ECHILD. - ASSERT_THAT(Wait4(child, &status, __WCLONE, nullptr), - ::testing::AnyOf(SyscallSucceedsWithValue(child), - SyscallFailsWithErrno(ECHILD))); - } -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/write.cc b/test/syscalls/linux/write.cc deleted file mode 100644 index 9b219cfd6..000000000 --- a/test/syscalls/linux/write.cc +++ /dev/null @@ -1,145 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <fcntl.h> -#include <signal.h> -#include <sys/resource.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <time.h> -#include <unistd.h> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "test/util/cleanup.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { -// This test is currently very rudimentary. -// -// TODO(edahlgren): -// * bad buffer states (EFAULT). -// * bad fds (wrong permission, wrong type of file, EBADF). -// * check offset is incremented. -// * check for EOF. -// * writing to pipes, symlinks, special files. -class WriteTest : public ::testing::Test { - public: - ssize_t WriteBytes(int fd, int bytes) { - std::vector<char> buf(bytes); - std::fill(buf.begin(), buf.end(), 'a'); - return WriteFd(fd, buf.data(), buf.size()); - } -}; - -TEST_F(WriteTest, WriteNoExceedsRLimit) { - // Get the current rlimit and restore after test run. - struct rlimit initial_lim; - ASSERT_THAT(getrlimit(RLIMIT_FSIZE, &initial_lim), SyscallSucceeds()); - auto cleanup = Cleanup([&initial_lim] { - EXPECT_THAT(setrlimit(RLIMIT_FSIZE, &initial_lim), SyscallSucceeds()); - }); - - int fd; - struct rlimit setlim; - const int target_lim = 1024; - setlim.rlim_cur = target_lim; - setlim.rlim_max = RLIM_INFINITY; - const std::string pathname = NewTempAbsPath(); - ASSERT_THAT(fd = open(pathname.c_str(), O_WRONLY | O_CREAT, S_IRWXU), - SyscallSucceeds()); - ASSERT_THAT(setrlimit(RLIMIT_FSIZE, &setlim), SyscallSucceeds()); - - EXPECT_THAT(WriteBytes(fd, target_lim), SyscallSucceedsWithValue(target_lim)); - - std::vector<char> buf(target_lim + 1); - std::fill(buf.begin(), buf.end(), 'a'); - EXPECT_THAT(pwrite(fd, buf.data(), target_lim, 1), SyscallSucceeds()); - EXPECT_THAT(pwrite64(fd, buf.data(), target_lim, 1), SyscallSucceeds()); - - EXPECT_THAT(close(fd), SyscallSucceeds()); -} - -TEST_F(WriteTest, WriteExceedsRLimit) { - // Get the current rlimit and restore after test run. - struct rlimit initial_lim; - ASSERT_THAT(getrlimit(RLIMIT_FSIZE, &initial_lim), SyscallSucceeds()); - auto cleanup = Cleanup([&initial_lim] { - EXPECT_THAT(setrlimit(RLIMIT_FSIZE, &initial_lim), SyscallSucceeds()); - }); - - int fd; - sigset_t filesize_mask; - sigemptyset(&filesize_mask); - sigaddset(&filesize_mask, SIGXFSZ); - - struct rlimit setlim; - const int target_lim = 1024; - setlim.rlim_cur = target_lim; - setlim.rlim_max = RLIM_INFINITY; - - const std::string pathname = NewTempAbsPath(); - ASSERT_THAT(fd = open(pathname.c_str(), O_WRONLY | O_CREAT, S_IRWXU), - SyscallSucceeds()); - ASSERT_THAT(setrlimit(RLIMIT_FSIZE, &setlim), SyscallSucceeds()); - ASSERT_THAT(sigprocmask(SIG_BLOCK, &filesize_mask, nullptr), - SyscallSucceeds()); - std::vector<char> buf(target_lim + 2); - std::fill(buf.begin(), buf.end(), 'a'); - - EXPECT_THAT(write(fd, buf.data(), target_lim + 1), - SyscallSucceedsWithValue(target_lim)); - EXPECT_THAT(write(fd, buf.data(), 1), SyscallFailsWithErrno(EFBIG)); - siginfo_t info; - struct timespec timelimit = {0, 0}; - ASSERT_THAT(RetryEINTR(sigtimedwait)(&filesize_mask, &info, &timelimit), - SyscallSucceedsWithValue(SIGXFSZ)); - EXPECT_EQ(info.si_code, SI_USER); - EXPECT_EQ(info.si_pid, getpid()); - EXPECT_EQ(info.si_uid, getuid()); - - EXPECT_THAT(pwrite(fd, buf.data(), target_lim + 1, 1), - SyscallSucceedsWithValue(target_lim - 1)); - EXPECT_THAT(pwrite(fd, buf.data(), 1, target_lim), - SyscallFailsWithErrno(EFBIG)); - ASSERT_THAT(RetryEINTR(sigtimedwait)(&filesize_mask, &info, &timelimit), - SyscallSucceedsWithValue(SIGXFSZ)); - EXPECT_EQ(info.si_code, SI_USER); - EXPECT_EQ(info.si_pid, getpid()); - EXPECT_EQ(info.si_uid, getuid()); - - EXPECT_THAT(pwrite64(fd, buf.data(), target_lim + 1, 1), - SyscallSucceedsWithValue(target_lim - 1)); - EXPECT_THAT(pwrite64(fd, buf.data(), 1, target_lim), - SyscallFailsWithErrno(EFBIG)); - ASSERT_THAT(RetryEINTR(sigtimedwait)(&filesize_mask, &info, &timelimit), - SyscallSucceedsWithValue(SIGXFSZ)); - EXPECT_EQ(info.si_code, SI_USER); - EXPECT_EQ(info.si_pid, getpid()); - EXPECT_EQ(info.si_uid, getuid()); - - ASSERT_THAT(sigprocmask(SIG_UNBLOCK, &filesize_mask, nullptr), - SyscallSucceeds()); - EXPECT_THAT(close(fd), SyscallSucceeds()); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/linux/xattr.cc b/test/syscalls/linux/xattr.cc deleted file mode 100644 index 8b00ef44c..000000000 --- a/test/syscalls/linux/xattr.cc +++ /dev/null @@ -1,609 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <errno.h> -#include <fcntl.h> -#include <limits.h> -#include <sys/types.h> -#include <sys/xattr.h> -#include <unistd.h> - -#include <string> -#include <vector> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "absl/container/flat_hash_set.h" -#include "test/syscalls/linux/file_base.h" -#include "test/util/capability_util.h" -#include "test/util/file_descriptor.h" -#include "test/util/posix_error.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -class XattrTest : public FileTest {}; - -TEST_F(XattrTest, XattrNonexistentFile) { - const char* path = "/does/not/exist"; - EXPECT_THAT(setxattr(path, nullptr, nullptr, 0, /*flags=*/0), - SyscallFailsWithErrno(ENOENT)); - EXPECT_THAT(getxattr(path, nullptr, nullptr, 0), - SyscallFailsWithErrno(ENOENT)); - EXPECT_THAT(listxattr(path, nullptr, 0), SyscallFailsWithErrno(ENOENT)); - EXPECT_THAT(removexattr(path, nullptr), SyscallFailsWithErrno(ENOENT)); -} - -TEST_F(XattrTest, XattrNullName) { - const char* path = test_file_name_.c_str(); - - EXPECT_THAT(setxattr(path, nullptr, nullptr, 0, /*flags=*/0), - SyscallFailsWithErrno(EFAULT)); - EXPECT_THAT(getxattr(path, nullptr, nullptr, 0), - SyscallFailsWithErrno(EFAULT)); - EXPECT_THAT(removexattr(path, nullptr), SyscallFailsWithErrno(EFAULT)); -} - -TEST_F(XattrTest, XattrEmptyName) { - const char* path = test_file_name_.c_str(); - - EXPECT_THAT(setxattr(path, "", nullptr, 0, /*flags=*/0), - SyscallFailsWithErrno(ERANGE)); - EXPECT_THAT(getxattr(path, "", nullptr, 0), SyscallFailsWithErrno(ERANGE)); - EXPECT_THAT(removexattr(path, ""), SyscallFailsWithErrno(ERANGE)); -} - -TEST_F(XattrTest, XattrLargeName) { - const char* path = test_file_name_.c_str(); - std::string name = "user."; - name += std::string(XATTR_NAME_MAX - name.length(), 'a'); - - // An xattr should be whitelisted before it can be accessed--do not allow - // arbitrary xattrs to be read/written in gVisor. - if (!IsRunningOnGvisor()) { - EXPECT_THAT(setxattr(path, name.c_str(), nullptr, 0, /*flags=*/0), - SyscallSucceeds()); - EXPECT_THAT(getxattr(path, name.c_str(), nullptr, 0), - SyscallSucceedsWithValue(0)); - } - - name += "a"; - EXPECT_THAT(setxattr(path, name.c_str(), nullptr, 0, /*flags=*/0), - SyscallFailsWithErrno(ERANGE)); - EXPECT_THAT(getxattr(path, name.c_str(), nullptr, 0), - SyscallFailsWithErrno(ERANGE)); - EXPECT_THAT(removexattr(path, name.c_str()), SyscallFailsWithErrno(ERANGE)); -} - -TEST_F(XattrTest, XattrInvalidPrefix) { - const char* path = test_file_name_.c_str(); - std::string name(XATTR_NAME_MAX, 'a'); - EXPECT_THAT(setxattr(path, name.c_str(), nullptr, 0, /*flags=*/0), - SyscallFailsWithErrno(EOPNOTSUPP)); - EXPECT_THAT(getxattr(path, name.c_str(), nullptr, 0), - SyscallFailsWithErrno(EOPNOTSUPP)); - EXPECT_THAT(removexattr(path, name.c_str()), - SyscallFailsWithErrno(EOPNOTSUPP)); -} - -// Do not allow save/restore cycles after making the test file read-only, as -// the restore will fail to open it with r/w permissions. -TEST_F(XattrTest, XattrReadOnly_NoRandomSave) { - // Drop capabilities that allow us to override file and directory permissions. - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_READ_SEARCH, false)); - - const char* path = test_file_name_.c_str(); - const char name[] = "user.test"; - char val = 'a'; - size_t size = sizeof(val); - - EXPECT_THAT(setxattr(path, name, &val, size, /*flags=*/0), SyscallSucceeds()); - - DisableSave ds; - ASSERT_NO_ERRNO(testing::Chmod(test_file_name_, S_IRUSR)); - - EXPECT_THAT(setxattr(path, name, &val, size, /*flags=*/0), - SyscallFailsWithErrno(EACCES)); - EXPECT_THAT(removexattr(path, name), SyscallFailsWithErrno(EACCES)); - - char buf = '-'; - EXPECT_THAT(getxattr(path, name, &buf, size), SyscallSucceedsWithValue(size)); - EXPECT_EQ(buf, val); - - char list[sizeof(name)]; - EXPECT_THAT(listxattr(path, list, sizeof(list)), - SyscallSucceedsWithValue(sizeof(name))); - EXPECT_STREQ(list, name); -} - -// Do not allow save/restore cycles after making the test file write-only, as -// the restore will fail to open it with r/w permissions. -TEST_F(XattrTest, XattrWriteOnly_NoRandomSave) { - // Drop capabilities that allow us to override file and directory permissions. - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_OVERRIDE, false)); - ASSERT_NO_ERRNO(SetCapability(CAP_DAC_READ_SEARCH, false)); - - DisableSave ds; - ASSERT_NO_ERRNO(testing::Chmod(test_file_name_, S_IWUSR)); - - const char* path = test_file_name_.c_str(); - const char name[] = "user.test"; - char val = 'a'; - size_t size = sizeof(val); - - EXPECT_THAT(setxattr(path, name, &val, size, /*flags=*/0), SyscallSucceeds()); - - EXPECT_THAT(getxattr(path, name, nullptr, 0), SyscallFailsWithErrno(EACCES)); - - // listxattr will succeed even without read permissions. - char list[sizeof(name)]; - EXPECT_THAT(listxattr(path, list, sizeof(list)), - SyscallSucceedsWithValue(sizeof(name))); - EXPECT_STREQ(list, name); - - EXPECT_THAT(removexattr(path, name), SyscallSucceeds()); -} - -TEST_F(XattrTest, XattrTrustedWithNonadmin) { - // TODO(b/148380782): Support setxattr and getxattr with "trusted" prefix. - SKIP_IF(IsRunningOnGvisor()); - SKIP_IF(ASSERT_NO_ERRNO_AND_VALUE(HaveCapability(CAP_SYS_ADMIN))); - - const char* path = test_file_name_.c_str(); - const char name[] = "trusted.abc"; - EXPECT_THAT(setxattr(path, name, nullptr, 0, /*flags=*/0), - SyscallFailsWithErrno(EPERM)); - EXPECT_THAT(removexattr(path, name), SyscallFailsWithErrno(EPERM)); - EXPECT_THAT(getxattr(path, name, nullptr, 0), SyscallFailsWithErrno(ENODATA)); -} - -TEST_F(XattrTest, XattrOnDirectory) { - TempPath dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const char name[] = "user.test"; - EXPECT_THAT(setxattr(dir.path().c_str(), name, nullptr, 0, /*flags=*/0), - SyscallSucceeds()); - EXPECT_THAT(getxattr(dir.path().c_str(), name, nullptr, 0), - SyscallSucceedsWithValue(0)); - - char list[sizeof(name)]; - EXPECT_THAT(listxattr(dir.path().c_str(), list, sizeof(list)), - SyscallSucceedsWithValue(sizeof(name))); - EXPECT_STREQ(list, name); - - EXPECT_THAT(removexattr(dir.path().c_str(), name), SyscallSucceeds()); -} - -TEST_F(XattrTest, XattrOnSymlink) { - TempPath dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - TempPath link = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateSymlinkTo(dir.path(), test_file_name_)); - const char name[] = "user.test"; - EXPECT_THAT(setxattr(link.path().c_str(), name, nullptr, 0, /*flags=*/0), - SyscallSucceeds()); - EXPECT_THAT(getxattr(link.path().c_str(), name, nullptr, 0), - SyscallSucceedsWithValue(0)); - - char list[sizeof(name)]; - EXPECT_THAT(listxattr(link.path().c_str(), list, sizeof(list)), - SyscallSucceedsWithValue(sizeof(name))); - EXPECT_STREQ(list, name); - - EXPECT_THAT(removexattr(link.path().c_str(), name), SyscallSucceeds()); -} - -TEST_F(XattrTest, XattrOnInvalidFileTypes) { - const char name[] = "user.test"; - - char char_device[] = "/dev/zero"; - EXPECT_THAT(setxattr(char_device, name, nullptr, 0, /*flags=*/0), - SyscallFailsWithErrno(EPERM)); - EXPECT_THAT(getxattr(char_device, name, nullptr, 0), - SyscallFailsWithErrno(ENODATA)); - EXPECT_THAT(listxattr(char_device, nullptr, 0), SyscallSucceedsWithValue(0)); - - // Use tmpfs, where creation of named pipes is supported. - const std::string fifo = NewTempAbsPathInDir("/dev/shm"); - const char* path = fifo.c_str(); - EXPECT_THAT(mknod(path, S_IFIFO | S_IRUSR | S_IWUSR, 0), SyscallSucceeds()); - EXPECT_THAT(setxattr(path, name, nullptr, 0, /*flags=*/0), - SyscallFailsWithErrno(EPERM)); - EXPECT_THAT(getxattr(path, name, nullptr, 0), SyscallFailsWithErrno(ENODATA)); - EXPECT_THAT(listxattr(path, nullptr, 0), SyscallSucceedsWithValue(0)); - EXPECT_THAT(removexattr(path, name), SyscallFailsWithErrno(EPERM)); -} - -TEST_F(XattrTest, SetxattrSizeSmallerThanValue) { - const char* path = test_file_name_.c_str(); - const char name[] = "user.test"; - std::vector<char> val = {'a', 'a'}; - size_t size = 1; - EXPECT_THAT(setxattr(path, name, val.data(), size, /*flags=*/0), - SyscallSucceeds()); - - std::vector<char> buf = {'-', '-'}; - std::vector<char> expected_buf = {'a', '-'}; - EXPECT_THAT(getxattr(path, name, buf.data(), buf.size()), - SyscallSucceedsWithValue(size)); - EXPECT_EQ(buf, expected_buf); -} - -TEST_F(XattrTest, SetxattrZeroSize) { - const char* path = test_file_name_.c_str(); - const char name[] = "user.test"; - char val = 'a'; - EXPECT_THAT(setxattr(path, name, &val, 0, /*flags=*/0), SyscallSucceeds()); - - char buf = '-'; - EXPECT_THAT(getxattr(path, name, &buf, XATTR_SIZE_MAX), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(buf, '-'); -} - -TEST_F(XattrTest, SetxattrSizeTooLarge) { - const char* path = test_file_name_.c_str(); - const char name[] = "user.test"; - - // Note that each particular fs implementation may stipulate a lower size - // limit, in which case we actually may fail (e.g. error with ENOSPC) for - // some sizes under XATTR_SIZE_MAX. - size_t size = XATTR_SIZE_MAX + 1; - std::vector<char> val(size); - EXPECT_THAT(setxattr(path, name, val.data(), size, /*flags=*/0), - SyscallFailsWithErrno(E2BIG)); - - EXPECT_THAT(getxattr(path, name, nullptr, 0), SyscallFailsWithErrno(ENODATA)); -} - -TEST_F(XattrTest, SetxattrNullValueAndNonzeroSize) { - const char* path = test_file_name_.c_str(); - const char name[] = "user.test"; - EXPECT_THAT(setxattr(path, name, nullptr, 1, /*flags=*/0), - SyscallFailsWithErrno(EFAULT)); - - EXPECT_THAT(getxattr(path, name, nullptr, 0), SyscallFailsWithErrno(ENODATA)); -} - -TEST_F(XattrTest, SetxattrNullValueAndZeroSize) { - const char* path = test_file_name_.c_str(); - const char name[] = "user.test"; - EXPECT_THAT(setxattr(path, name, nullptr, 0, /*flags=*/0), SyscallSucceeds()); - - EXPECT_THAT(getxattr(path, name, nullptr, 0), SyscallSucceedsWithValue(0)); -} - -TEST_F(XattrTest, SetxattrValueTooLargeButOKSize) { - const char* path = test_file_name_.c_str(); - const char name[] = "user.test"; - std::vector<char> val(XATTR_SIZE_MAX + 1); - std::fill(val.begin(), val.end(), 'a'); - size_t size = 1; - EXPECT_THAT(setxattr(path, name, val.data(), size, /*flags=*/0), - SyscallSucceeds()); - - std::vector<char> buf = {'-', '-'}; - std::vector<char> expected_buf = {'a', '-'}; - EXPECT_THAT(getxattr(path, name, buf.data(), size), - SyscallSucceedsWithValue(size)); - EXPECT_EQ(buf, expected_buf); -} - -TEST_F(XattrTest, SetxattrReplaceWithSmaller) { - const char* path = test_file_name_.c_str(); - const char name[] = "user.test"; - std::vector<char> val = {'a', 'a'}; - EXPECT_THAT(setxattr(path, name, val.data(), 2, /*flags=*/0), - SyscallSucceeds()); - EXPECT_THAT(setxattr(path, name, val.data(), 1, /*flags=*/0), - SyscallSucceeds()); - - std::vector<char> buf = {'-', '-'}; - std::vector<char> expected_buf = {'a', '-'}; - EXPECT_THAT(getxattr(path, name, buf.data(), 2), SyscallSucceedsWithValue(1)); - EXPECT_EQ(buf, expected_buf); -} - -TEST_F(XattrTest, SetxattrReplaceWithLarger) { - const char* path = test_file_name_.c_str(); - const char name[] = "user.test"; - std::vector<char> val = {'a', 'a'}; - EXPECT_THAT(setxattr(path, name, val.data(), 1, /*flags=*/0), - SyscallSucceeds()); - EXPECT_THAT(setxattr(path, name, val.data(), 2, /*flags=*/0), - SyscallSucceeds()); - - std::vector<char> buf = {'-', '-'}; - EXPECT_THAT(getxattr(path, name, buf.data(), 2), SyscallSucceedsWithValue(2)); - EXPECT_EQ(buf, val); -} - -TEST_F(XattrTest, SetxattrCreateFlag) { - const char* path = test_file_name_.c_str(); - const char name[] = "user.test"; - EXPECT_THAT(setxattr(path, name, nullptr, 0, XATTR_CREATE), - SyscallSucceeds()); - EXPECT_THAT(setxattr(path, name, nullptr, 0, XATTR_CREATE), - SyscallFailsWithErrno(EEXIST)); - - EXPECT_THAT(getxattr(path, name, nullptr, 0), SyscallSucceedsWithValue(0)); -} - -TEST_F(XattrTest, SetxattrReplaceFlag) { - const char* path = test_file_name_.c_str(); - const char name[] = "user.test"; - EXPECT_THAT(setxattr(path, name, nullptr, 0, XATTR_REPLACE), - SyscallFailsWithErrno(ENODATA)); - EXPECT_THAT(setxattr(path, name, nullptr, 0, /*flags=*/0), SyscallSucceeds()); - EXPECT_THAT(setxattr(path, name, nullptr, 0, XATTR_REPLACE), - SyscallSucceeds()); - - EXPECT_THAT(getxattr(path, name, nullptr, 0), SyscallSucceedsWithValue(0)); -} - -TEST_F(XattrTest, SetxattrInvalidFlags) { - const char* path = test_file_name_.c_str(); - int invalid_flags = 0xff; - EXPECT_THAT(setxattr(path, nullptr, nullptr, 0, invalid_flags), - SyscallFailsWithErrno(EINVAL)); -} - -TEST_F(XattrTest, Getxattr) { - const char* path = test_file_name_.c_str(); - const char name[] = "user.test"; - int val = 1234; - size_t size = sizeof(val); - EXPECT_THAT(setxattr(path, name, &val, size, /*flags=*/0), SyscallSucceeds()); - - int buf = 0; - EXPECT_THAT(getxattr(path, name, &buf, size), SyscallSucceedsWithValue(size)); - EXPECT_EQ(buf, val); -} - -TEST_F(XattrTest, GetxattrSizeSmallerThanValue) { - const char* path = test_file_name_.c_str(); - const char name[] = "user.test"; - std::vector<char> val = {'a', 'a'}; - size_t size = val.size(); - EXPECT_THAT(setxattr(path, name, &val, size, /*flags=*/0), SyscallSucceeds()); - - char buf = '-'; - EXPECT_THAT(getxattr(path, name, &buf, 1), SyscallFailsWithErrno(ERANGE)); - EXPECT_EQ(buf, '-'); -} - -TEST_F(XattrTest, GetxattrSizeLargerThanValue) { - const char* path = test_file_name_.c_str(); - const char name[] = "user.test"; - char val = 'a'; - EXPECT_THAT(setxattr(path, name, &val, 1, /*flags=*/0), SyscallSucceeds()); - - std::vector<char> buf(XATTR_SIZE_MAX); - std::fill(buf.begin(), buf.end(), '-'); - std::vector<char> expected_buf = buf; - expected_buf[0] = 'a'; - EXPECT_THAT(getxattr(path, name, buf.data(), buf.size()), - SyscallSucceedsWithValue(1)); - EXPECT_EQ(buf, expected_buf); -} - -TEST_F(XattrTest, GetxattrZeroSize) { - const char* path = test_file_name_.c_str(); - const char name[] = "user.test"; - char val = 'a'; - EXPECT_THAT(setxattr(path, name, &val, sizeof(val), /*flags=*/0), - SyscallSucceeds()); - - char buf = '-'; - EXPECT_THAT(getxattr(path, name, &buf, 0), - SyscallSucceedsWithValue(sizeof(val))); - EXPECT_EQ(buf, '-'); -} - -TEST_F(XattrTest, GetxattrSizeTooLarge) { - const char* path = test_file_name_.c_str(); - const char name[] = "user.test"; - char val = 'a'; - EXPECT_THAT(setxattr(path, name, &val, sizeof(val), /*flags=*/0), - SyscallSucceeds()); - - std::vector<char> buf(XATTR_SIZE_MAX + 1); - std::fill(buf.begin(), buf.end(), '-'); - std::vector<char> expected_buf = buf; - expected_buf[0] = 'a'; - EXPECT_THAT(getxattr(path, name, buf.data(), buf.size()), - SyscallSucceedsWithValue(sizeof(val))); - EXPECT_EQ(buf, expected_buf); -} - -TEST_F(XattrTest, GetxattrNullValue) { - const char* path = test_file_name_.c_str(); - const char name[] = "user.test"; - char val = 'a'; - size_t size = sizeof(val); - EXPECT_THAT(setxattr(path, name, &val, size, /*flags=*/0), SyscallSucceeds()); - - EXPECT_THAT(getxattr(path, name, nullptr, size), - SyscallFailsWithErrno(EFAULT)); -} - -TEST_F(XattrTest, GetxattrNullValueAndZeroSize) { - const char* path = test_file_name_.c_str(); - const char name[] = "user.test"; - char val = 'a'; - size_t size = sizeof(val); - // Set value with zero size. - EXPECT_THAT(setxattr(path, name, &val, 0, /*flags=*/0), SyscallSucceeds()); - // Get value with nonzero size. - EXPECT_THAT(getxattr(path, name, nullptr, size), SyscallSucceedsWithValue(0)); - - // Set value with nonzero size. - EXPECT_THAT(setxattr(path, name, &val, size, /*flags=*/0), SyscallSucceeds()); - // Get value with zero size. - EXPECT_THAT(getxattr(path, name, nullptr, 0), SyscallSucceedsWithValue(size)); -} - -TEST_F(XattrTest, GetxattrNonexistentName) { - const char* path = test_file_name_.c_str(); - const char name[] = "user.test"; - EXPECT_THAT(getxattr(path, name, nullptr, 0), SyscallFailsWithErrno(ENODATA)); -} - -TEST_F(XattrTest, Listxattr) { - const char* path = test_file_name_.c_str(); - const std::string name = "user.test"; - const std::string name2 = "user.test2"; - const std::string name3 = "user.test3"; - EXPECT_THAT(setxattr(path, name.c_str(), nullptr, 0, /*flags=*/0), - SyscallSucceeds()); - EXPECT_THAT(setxattr(path, name2.c_str(), nullptr, 0, /*flags=*/0), - SyscallSucceeds()); - EXPECT_THAT(setxattr(path, name3.c_str(), nullptr, 0, /*flags=*/0), - SyscallSucceeds()); - - std::vector<char> list(name.size() + 1 + name2.size() + 1 + name3.size() + 1); - char* buf = list.data(); - EXPECT_THAT(listxattr(path, buf, XATTR_SIZE_MAX), - SyscallSucceedsWithValue(list.size())); - - absl::flat_hash_set<std::string> got = {}; - for (char* p = buf; p < buf + list.size(); p += strlen(p) + 1) { - got.insert(std::string{p}); - } - - absl::flat_hash_set<std::string> expected = {name, name2, name3}; - EXPECT_EQ(got, expected); -} - -TEST_F(XattrTest, ListxattrNoXattrs) { - const char* path = test_file_name_.c_str(); - - std::vector<char> list, expected; - EXPECT_THAT(listxattr(path, list.data(), sizeof(list)), - SyscallSucceedsWithValue(0)); - EXPECT_EQ(list, expected); - - // Listxattr should succeed if there are no attributes, even if the buffer - // passed in is a nullptr. - EXPECT_THAT(listxattr(path, nullptr, sizeof(list)), - SyscallSucceedsWithValue(0)); -} - -TEST_F(XattrTest, ListxattrNullBuffer) { - const char* path = test_file_name_.c_str(); - const char name[] = "user.test"; - EXPECT_THAT(setxattr(path, name, nullptr, 0, /*flags=*/0), SyscallSucceeds()); - - EXPECT_THAT(listxattr(path, nullptr, sizeof(name)), - SyscallFailsWithErrno(EFAULT)); -} - -TEST_F(XattrTest, ListxattrSizeTooSmall) { - const char* path = test_file_name_.c_str(); - const char name[] = "user.test"; - EXPECT_THAT(setxattr(path, name, nullptr, 0, /*flags=*/0), SyscallSucceeds()); - - char list[sizeof(name) - 1]; - EXPECT_THAT(listxattr(path, list, sizeof(list)), - SyscallFailsWithErrno(ERANGE)); -} - -TEST_F(XattrTest, ListxattrZeroSize) { - const char* path = test_file_name_.c_str(); - const char name[] = "user.test"; - EXPECT_THAT(setxattr(path, name, nullptr, 0, /*flags=*/0), SyscallSucceeds()); - EXPECT_THAT(listxattr(path, nullptr, 0), - SyscallSucceedsWithValue(sizeof(name))); -} - -TEST_F(XattrTest, RemoveXattr) { - const char* path = test_file_name_.c_str(); - const char name[] = "user.test"; - EXPECT_THAT(setxattr(path, name, nullptr, 0, /*flags=*/0), SyscallSucceeds()); - EXPECT_THAT(removexattr(path, name), SyscallSucceeds()); - EXPECT_THAT(getxattr(path, name, nullptr, 0), SyscallFailsWithErrno(ENODATA)); -} - -TEST_F(XattrTest, RemoveXattrNonexistentName) { - const char* path = test_file_name_.c_str(); - const char name[] = "user.test"; - EXPECT_THAT(removexattr(path, name), SyscallFailsWithErrno(ENODATA)); -} - -TEST_F(XattrTest, LXattrOnSymlink) { - const char name[] = "user.test"; - TempPath dir = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - TempPath link = ASSERT_NO_ERRNO_AND_VALUE( - TempPath::CreateSymlinkTo(dir.path(), test_file_name_)); - - EXPECT_THAT(lsetxattr(link.path().c_str(), name, nullptr, 0, 0), - SyscallFailsWithErrno(EPERM)); - EXPECT_THAT(lgetxattr(link.path().c_str(), name, nullptr, 0), - SyscallFailsWithErrno(ENODATA)); - EXPECT_THAT(llistxattr(link.path().c_str(), nullptr, 0), - SyscallSucceedsWithValue(0)); - EXPECT_THAT(lremovexattr(link.path().c_str(), name), - SyscallFailsWithErrno(EPERM)); -} - -TEST_F(XattrTest, LXattrOnNonsymlink) { - const char* path = test_file_name_.c_str(); - const char name[] = "user.test"; - int val = 1234; - size_t size = sizeof(val); - EXPECT_THAT(lsetxattr(path, name, &val, size, /*flags=*/0), - SyscallSucceeds()); - - int buf = 0; - EXPECT_THAT(lgetxattr(path, name, &buf, size), - SyscallSucceedsWithValue(size)); - EXPECT_EQ(buf, val); - - char list[sizeof(name)]; - EXPECT_THAT(llistxattr(path, list, sizeof(list)), - SyscallSucceedsWithValue(sizeof(name))); - EXPECT_STREQ(list, name); - - EXPECT_THAT(lremovexattr(path, name), SyscallSucceeds()); -} - -TEST_F(XattrTest, XattrWithFD) { - const FileDescriptor fd = - ASSERT_NO_ERRNO_AND_VALUE(Open(test_file_name_.c_str(), 0)); - const char name[] = "user.test"; - int val = 1234; - size_t size = sizeof(val); - EXPECT_THAT(fsetxattr(fd.get(), name, &val, size, /*flags=*/0), - SyscallSucceeds()); - - int buf = 0; - EXPECT_THAT(fgetxattr(fd.get(), name, &buf, size), - SyscallSucceedsWithValue(size)); - EXPECT_EQ(buf, val); - - char list[sizeof(name)]; - EXPECT_THAT(flistxattr(fd.get(), list, sizeof(list)), - SyscallSucceedsWithValue(sizeof(name))); - EXPECT_STREQ(list, name); - - EXPECT_THAT(fremovexattr(fd.get(), name), SyscallSucceeds()); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/syscalls/syscall_test_runner.go b/test/syscalls/syscall_test_runner.go deleted file mode 100644 index ae342b68c..000000000 --- a/test/syscalls/syscall_test_runner.go +++ /dev/null @@ -1,482 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// Binary syscall_test_runner runs the syscall test suites in gVisor -// containers and on the host platform. -package main - -import ( - "flag" - "fmt" - "io/ioutil" - "os" - "os/exec" - "os/signal" - "path/filepath" - "strings" - "syscall" - "testing" - "time" - - specs "github.com/opencontainers/runtime-spec/specs-go" - "golang.org/x/sys/unix" - "gvisor.dev/gvisor/pkg/log" - "gvisor.dev/gvisor/runsc/specutils" - "gvisor.dev/gvisor/runsc/testutil" - "gvisor.dev/gvisor/test/syscalls/gtest" - "gvisor.dev/gvisor/test/uds" -) - -// Location of syscall tests, relative to the repo root. -const testDir = "test/syscalls/linux" - -var ( - testName = flag.String("test-name", "", "name of test binary to run") - debug = flag.Bool("debug", false, "enable debug logs") - strace = flag.Bool("strace", false, "enable strace logs") - platform = flag.String("platform", "ptrace", "platform to run on") - network = flag.String("network", "none", "network stack to run on (sandbox, host, none)") - useTmpfs = flag.Bool("use-tmpfs", false, "mounts tmpfs for /tmp") - fileAccess = flag.String("file-access", "exclusive", "mounts root in exclusive or shared mode") - overlay = flag.Bool("overlay", false, "wrap filesystem mounts with writable tmpfs overlay") - parallel = flag.Bool("parallel", false, "run tests in parallel") - runscPath = flag.String("runsc", "", "path to runsc binary") - - addUDSTree = flag.Bool("add-uds-tree", false, "expose a tree of UDS utilities for use in tests") -) - -// runTestCaseNative runs the test case directly on the host machine. -func runTestCaseNative(testBin string, tc gtest.TestCase, t *testing.T) { - // These tests might be running in parallel, so make sure they have a - // unique test temp dir. - tmpDir, err := ioutil.TempDir(testutil.TmpDir(), "") - if err != nil { - t.Fatalf("could not create temp dir: %v", err) - } - defer os.RemoveAll(tmpDir) - - // Replace TEST_TMPDIR in the current environment with something - // unique. - env := os.Environ() - newEnvVar := "TEST_TMPDIR=" + tmpDir - var found bool - for i, kv := range env { - if strings.HasPrefix(kv, "TEST_TMPDIR=") { - env[i] = newEnvVar - found = true - break - } - } - if !found { - env = append(env, newEnvVar) - } - // Remove env variables that cause the gunit binary to write output - // files, since they will stomp on eachother, and on the output files - // from this go test. - env = filterEnv(env, []string{"GUNIT_OUTPUT", "TEST_PREMATURE_EXIT_FILE", "XML_OUTPUT_FILE"}) - - // Remove shard env variables so that the gunit binary does not try to - // intepret them. - env = filterEnv(env, []string{"TEST_SHARD_INDEX", "TEST_TOTAL_SHARDS", "GTEST_SHARD_INDEX", "GTEST_TOTAL_SHARDS"}) - - if *addUDSTree { - socketDir, cleanup, err := uds.CreateSocketTree("/tmp") - if err != nil { - t.Fatalf("failed to create socket tree: %v", err) - } - defer cleanup() - - env = append(env, "TEST_UDS_TREE="+socketDir) - // On Linux, the concept of "attach" location doesn't exist. - // Just pass the same path to make these test identical. - env = append(env, "TEST_UDS_ATTACH_TREE="+socketDir) - } - - cmd := exec.Command(testBin, gtest.FilterTestFlag+"="+tc.FullName()) - cmd.Env = env - cmd.Stdout = os.Stdout - cmd.Stderr = os.Stderr - if err := cmd.Run(); err != nil { - ws := err.(*exec.ExitError).Sys().(syscall.WaitStatus) - t.Errorf("test %q exited with status %d, want 0", tc.FullName(), ws.ExitStatus()) - } -} - -// runRunsc runs spec in runsc in a standard test configuration. -// -// runsc logs will be saved to a path in TEST_UNDECLARED_OUTPUTS_DIR. -// -// Returns an error if the sandboxed application exits non-zero. -func runRunsc(tc gtest.TestCase, spec *specs.Spec) error { - bundleDir, err := testutil.SetupBundleDir(spec) - if err != nil { - return fmt.Errorf("SetupBundleDir failed: %v", err) - } - defer os.RemoveAll(bundleDir) - - rootDir, err := testutil.SetupRootDir() - if err != nil { - return fmt.Errorf("SetupRootDir failed: %v", err) - } - defer os.RemoveAll(rootDir) - - name := tc.FullName() - id := testutil.UniqueContainerID() - log.Infof("Running test %q in container %q", name, id) - specutils.LogSpec(spec) - - args := []string{ - "-root", rootDir, - "-network", *network, - "-log-format=text", - "-TESTONLY-unsafe-nonroot=true", - "-net-raw=true", - fmt.Sprintf("-panic-signal=%d", syscall.SIGTERM), - "-watchdog-action=panic", - "-platform", *platform, - "-file-access", *fileAccess, - } - if *overlay { - args = append(args, "-overlay") - } - if *debug { - args = append(args, "-debug", "-log-packets=true") - } - if *strace { - args = append(args, "-strace") - } - if *addUDSTree { - args = append(args, "-fsgofer-host-uds") - } - - if outDir, ok := syscall.Getenv("TEST_UNDECLARED_OUTPUTS_DIR"); ok { - tdir := filepath.Join(outDir, strings.Replace(name, "/", "_", -1)) - if err := os.MkdirAll(tdir, 0755); err != nil { - return fmt.Errorf("could not create test dir: %v", err) - } - debugLogDir, err := ioutil.TempDir(tdir, "runsc") - if err != nil { - return fmt.Errorf("could not create temp dir: %v", err) - } - debugLogDir += "/" - log.Infof("runsc logs: %s", debugLogDir) - args = append(args, "-debug-log", debugLogDir) - - // Default -log sends messages to stderr which makes reading the test log - // difficult. Instead, drop them when debug log is enabled given it's a - // better place for these messages. - args = append(args, "-log=/dev/null") - } - - // Current process doesn't have CAP_SYS_ADMIN, create user namespace and run - // as root inside that namespace to get it. - rArgs := append(args, "run", "--bundle", bundleDir, id) - cmd := exec.Command(*runscPath, rArgs...) - cmd.SysProcAttr = &syscall.SysProcAttr{ - Cloneflags: syscall.CLONE_NEWUSER | syscall.CLONE_NEWNS, - // Set current user/group as root inside the namespace. - UidMappings: []syscall.SysProcIDMap{ - {ContainerID: 0, HostID: os.Getuid(), Size: 1}, - }, - GidMappings: []syscall.SysProcIDMap{ - {ContainerID: 0, HostID: os.Getgid(), Size: 1}, - }, - GidMappingsEnableSetgroups: false, - Credential: &syscall.Credential{ - Uid: 0, - Gid: 0, - }, - } - cmd.Stdout = os.Stdout - cmd.Stderr = os.Stderr - sig := make(chan os.Signal, 1) - signal.Notify(sig, syscall.SIGTERM) - go func() { - s, ok := <-sig - if !ok { - return - } - log.Warningf("%s: Got signal: %v", name, s) - done := make(chan bool) - dArgs := append([]string{}, args...) - dArgs = append(dArgs, "-alsologtostderr=true", "debug", "--stacks", id) - go func(dArgs []string) { - cmd := exec.Command(*runscPath, dArgs...) - cmd.Stdout = os.Stdout - cmd.Stderr = os.Stderr - cmd.Run() - done <- true - }(dArgs) - - timeout := time.After(3 * time.Second) - select { - case <-timeout: - log.Infof("runsc debug --stacks is timeouted") - case <-done: - } - - log.Warningf("Send SIGTERM to the sandbox process") - dArgs = append(args, "debug", - fmt.Sprintf("--signal=%d", syscall.SIGTERM), - id) - cmd := exec.Command(*runscPath, dArgs...) - cmd.Stdout = os.Stdout - cmd.Stderr = os.Stderr - cmd.Run() - }() - - err = cmd.Run() - - signal.Stop(sig) - close(sig) - - return err -} - -// setupUDSTree updates the spec to expose a UDS tree for gofer socket testing. -func setupUDSTree(spec *specs.Spec) (cleanup func(), err error) { - socketDir, cleanup, err := uds.CreateSocketTree("/tmp") - if err != nil { - return nil, fmt.Errorf("failed to create socket tree: %v", err) - } - - // Standard access to entire tree. - spec.Mounts = append(spec.Mounts, specs.Mount{ - Destination: "/tmp/sockets", - Source: socketDir, - Type: "bind", - }) - - // Individial attach points for each socket to test mounts that attach - // directly to the sockets. - spec.Mounts = append(spec.Mounts, specs.Mount{ - Destination: "/tmp/sockets-attach/stream/echo", - Source: filepath.Join(socketDir, "stream/echo"), - Type: "bind", - }) - spec.Mounts = append(spec.Mounts, specs.Mount{ - Destination: "/tmp/sockets-attach/stream/nonlistening", - Source: filepath.Join(socketDir, "stream/nonlistening"), - Type: "bind", - }) - spec.Mounts = append(spec.Mounts, specs.Mount{ - Destination: "/tmp/sockets-attach/seqpacket/echo", - Source: filepath.Join(socketDir, "seqpacket/echo"), - Type: "bind", - }) - spec.Mounts = append(spec.Mounts, specs.Mount{ - Destination: "/tmp/sockets-attach/seqpacket/nonlistening", - Source: filepath.Join(socketDir, "seqpacket/nonlistening"), - Type: "bind", - }) - spec.Mounts = append(spec.Mounts, specs.Mount{ - Destination: "/tmp/sockets-attach/dgram/null", - Source: filepath.Join(socketDir, "dgram/null"), - Type: "bind", - }) - - spec.Process.Env = append(spec.Process.Env, "TEST_UDS_TREE=/tmp/sockets") - spec.Process.Env = append(spec.Process.Env, "TEST_UDS_ATTACH_TREE=/tmp/sockets-attach") - - return cleanup, nil -} - -// runsTestCaseRunsc runs the test case in runsc. -func runTestCaseRunsc(testBin string, tc gtest.TestCase, t *testing.T) { - // Run a new container with the test executable and filter for the - // given test suite and name. - spec := testutil.NewSpecWithArgs(testBin, gtest.FilterTestFlag+"="+tc.FullName()) - - // Mark the root as writeable, as some tests attempt to - // write to the rootfs, and expect EACCES, not EROFS. - spec.Root.Readonly = false - - // Test spec comes with pre-defined mounts that we don't want. Reset it. - spec.Mounts = nil - if *useTmpfs { - // Forces '/tmp' to be mounted as tmpfs, otherwise test that rely on - // features only available in gVisor's internal tmpfs may fail. - spec.Mounts = append(spec.Mounts, specs.Mount{ - Destination: "/tmp", - Type: "tmpfs", - }) - } else { - // Use a gofer-backed directory as '/tmp'. - // - // Tests might be running in parallel, so make sure each has a - // unique test temp dir. - // - // Some tests (e.g., sticky) access this mount from other - // users, so make sure it is world-accessible. - tmpDir, err := ioutil.TempDir(testutil.TmpDir(), "") - if err != nil { - t.Fatalf("could not create temp dir: %v", err) - } - defer os.RemoveAll(tmpDir) - - if err := os.Chmod(tmpDir, 0777); err != nil { - t.Fatalf("could not chmod temp dir: %v", err) - } - - spec.Mounts = append(spec.Mounts, specs.Mount{ - Type: "bind", - Destination: "/tmp", - Source: tmpDir, - }) - } - - // Set environment variables that indicate we are - // running in gVisor with the given platform and network. - platformVar := "TEST_ON_GVISOR" - networkVar := "GVISOR_NETWORK" - env := append(os.Environ(), platformVar+"="+*platform, networkVar+"="+*network) - - // Remove env variables that cause the gunit binary to write output - // files, since they will stomp on eachother, and on the output files - // from this go test. - env = filterEnv(env, []string{"GUNIT_OUTPUT", "TEST_PREMATURE_EXIT_FILE", "XML_OUTPUT_FILE"}) - - // Remove shard env variables so that the gunit binary does not try to - // intepret them. - env = filterEnv(env, []string{"TEST_SHARD_INDEX", "TEST_TOTAL_SHARDS", "GTEST_SHARD_INDEX", "GTEST_TOTAL_SHARDS"}) - - // Set TEST_TMPDIR to /tmp, as some of the syscall tests require it to - // be backed by tmpfs. - for i, kv := range env { - if strings.HasPrefix(kv, "TEST_TMPDIR=") { - env[i] = "TEST_TMPDIR=/tmp" - break - } - } - - spec.Process.Env = env - - if *addUDSTree { - cleanup, err := setupUDSTree(spec) - if err != nil { - t.Fatalf("error creating UDS tree: %v", err) - } - defer cleanup() - } - - if err := runRunsc(tc, spec); err != nil { - t.Errorf("test %q failed with error %v, want nil", tc.FullName(), err) - } -} - -// filterEnv returns an environment with the blacklisted variables removed. -func filterEnv(env, blacklist []string) []string { - var out []string - for _, kv := range env { - ok := true - for _, k := range blacklist { - if strings.HasPrefix(kv, k+"=") { - ok = false - break - } - } - if ok { - out = append(out, kv) - } - } - return out -} - -func fatalf(s string, args ...interface{}) { - fmt.Fprintf(os.Stderr, s+"\n", args...) - os.Exit(1) -} - -func matchString(a, b string) (bool, error) { - return a == b, nil -} - -func main() { - flag.Parse() - if *testName == "" { - fatalf("test-name flag must be provided") - } - - log.SetLevel(log.Info) - if *debug { - log.SetLevel(log.Debug) - } - - if *platform != "native" && *runscPath == "" { - if err := testutil.ConfigureExePath(); err != nil { - panic(err.Error()) - } - *runscPath = specutils.ExePath - } - - // Make sure stdout and stderr are opened with O_APPEND, otherwise logs - // from outside the sandbox can (and will) stomp on logs from inside - // the sandbox. - for _, f := range []*os.File{os.Stdout, os.Stderr} { - flags, err := unix.FcntlInt(f.Fd(), unix.F_GETFL, 0) - if err != nil { - fatalf("error getting file flags for %v: %v", f, err) - } - if flags&unix.O_APPEND == 0 { - flags |= unix.O_APPEND - if _, err := unix.FcntlInt(f.Fd(), unix.F_SETFL, flags); err != nil { - fatalf("error setting file flags for %v: %v", f, err) - } - } - } - - // Get path to test binary. - fullTestName := filepath.Join(testDir, *testName) - testBin, err := testutil.FindFile(fullTestName) - if err != nil { - fatalf("FindFile(%q) failed: %v", fullTestName, err) - } - - // Get all test cases in each binary. - testCases, err := gtest.ParseTestCases(testBin) - if err != nil { - fatalf("ParseTestCases(%q) failed: %v", testBin, err) - } - - // Get subset of tests corresponding to shard. - indices, err := testutil.TestIndicesForShard(len(testCases)) - if err != nil { - fatalf("TestsForShard() failed: %v", err) - } - - // Run the tests. - var tests []testing.InternalTest - for _, tci := range indices { - // Capture tc. - tc := testCases[tci] - testName := fmt.Sprintf("%s_%s", tc.Suite, tc.Name) - tests = append(tests, testing.InternalTest{ - Name: testName, - F: func(t *testing.T) { - if *parallel { - t.Parallel() - } - if *platform == "native" { - // Run the test case on host. - runTestCaseNative(testBin, tc, t) - } else { - // Run the test case in runsc. - runTestCaseRunsc(testBin, tc, t) - } - }, - }) - } - - testing.Main(matchString, tests, nil, nil) -} diff --git a/test/syscalls/syscall_test_runner.sh b/test/syscalls/syscall_test_runner.sh deleted file mode 100755 index 864bb2de4..000000000 --- a/test/syscalls/syscall_test_runner.sh +++ /dev/null @@ -1,34 +0,0 @@ -#!/bin/bash - -# Copyright 2018 The gVisor Authors. -# -# Licensed under the Apache License, Version 2.0 (the "License"); -# you may not use this file except in compliance with the License. -# You may obtain a copy of the License at -# -# http://www.apache.org/licenses/LICENSE-2.0 -# -# Unless required by applicable law or agreed to in writing, software -# distributed under the License is distributed on an "AS IS" BASIS, -# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -# See the License for the specific language governing permissions and -# limitations under the License. - -# syscall_test_runner.sh is a simple wrapper around the go syscall test runner. -# It exists so that we can build the syscall test runner once, and use it for -# all syscall tests, rather than build it for each test run. - -set -euf -x -o pipefail - -echo -- "$@" - -if [[ -n "${TEST_UNDECLARED_OUTPUTS_DIR}" ]]; then - mkdir -p "${TEST_UNDECLARED_OUTPUTS_DIR}" - chmod a+rwx "${TEST_UNDECLARED_OUTPUTS_DIR}" -fi - -# Get location of syscall_test_runner binary. -readonly runner=$(find "${TEST_SRCDIR}" -name syscall_test_runner) - -# Pass the arguments of this script directly to the runner. -exec "${runner}" "$@" diff --git a/test/uds/BUILD b/test/uds/BUILD deleted file mode 100644 index 51e2c7ce8..000000000 --- a/test/uds/BUILD +++ /dev/null @@ -1,16 +0,0 @@ -load("//tools:defs.bzl", "go_library") - -package( - default_visibility = ["//:sandbox"], - licenses = ["notice"], -) - -go_library( - name = "uds", - testonly = 1, - srcs = ["uds.go"], - deps = [ - "//pkg/log", - "//pkg/unet", - ], -) diff --git a/test/uds/uds.go b/test/uds/uds.go deleted file mode 100644 index b714c61b0..000000000 --- a/test/uds/uds.go +++ /dev/null @@ -1,228 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// Package uds contains helpers for testing external UDS functionality. -package uds - -import ( - "fmt" - "io" - "io/ioutil" - "os" - "path/filepath" - "syscall" - - "gvisor.dev/gvisor/pkg/log" - "gvisor.dev/gvisor/pkg/unet" -) - -// createEchoSocket creates a socket that echoes back anything received. -// -// Only works for stream, seqpacket sockets. -func createEchoSocket(path string, protocol int) (cleanup func(), err error) { - fd, err := syscall.Socket(syscall.AF_UNIX, protocol, 0) - if err != nil { - return nil, fmt.Errorf("error creating echo(%d) socket: %v", protocol, err) - } - - if err := syscall.Bind(fd, &syscall.SockaddrUnix{Name: path}); err != nil { - return nil, fmt.Errorf("error binding echo(%d) socket: %v", protocol, err) - } - - if err := syscall.Listen(fd, 0); err != nil { - return nil, fmt.Errorf("error listening echo(%d) socket: %v", protocol, err) - } - - server, err := unet.NewServerSocket(fd) - if err != nil { - return nil, fmt.Errorf("error creating echo(%d) unet socket: %v", protocol, err) - } - - acceptAndEchoOne := func() error { - s, err := server.Accept() - if err != nil { - return fmt.Errorf("failed to accept: %v", err) - } - defer s.Close() - - for { - buf := make([]byte, 512) - for { - n, err := s.Read(buf) - if err == io.EOF { - return nil - } - if err != nil { - return fmt.Errorf("failed to read: %d, %v", n, err) - } - - n, err = s.Write(buf[:n]) - if err != nil { - return fmt.Errorf("failed to write: %d, %v", n, err) - } - } - } - } - - go func() { - for { - if err := acceptAndEchoOne(); err != nil { - log.Warningf("Failed to handle echo(%d) socket: %v", protocol, err) - return - } - } - }() - - cleanup = func() { - if err := server.Close(); err != nil { - log.Warningf("Failed to close echo(%d) socket: %v", protocol, err) - } - } - - return cleanup, nil -} - -// createNonListeningSocket creates a socket that is bound but not listening. -// -// Only relevant for stream, seqpacket sockets. -func createNonListeningSocket(path string, protocol int) (cleanup func(), err error) { - fd, err := syscall.Socket(syscall.AF_UNIX, protocol, 0) - if err != nil { - return nil, fmt.Errorf("error creating nonlistening(%d) socket: %v", protocol, err) - } - - if err := syscall.Bind(fd, &syscall.SockaddrUnix{Name: path}); err != nil { - return nil, fmt.Errorf("error binding nonlistening(%d) socket: %v", protocol, err) - } - - cleanup = func() { - if err := syscall.Close(fd); err != nil { - log.Warningf("Failed to close nonlistening(%d) socket: %v", protocol, err) - } - } - - return cleanup, nil -} - -// createNullSocket creates a socket that reads anything received. -// -// Only works for dgram sockets. -func createNullSocket(path string, protocol int) (cleanup func(), err error) { - fd, err := syscall.Socket(syscall.AF_UNIX, protocol, 0) - if err != nil { - return nil, fmt.Errorf("error creating null(%d) socket: %v", protocol, err) - } - - if err := syscall.Bind(fd, &syscall.SockaddrUnix{Name: path}); err != nil { - return nil, fmt.Errorf("error binding null(%d) socket: %v", protocol, err) - } - - s, err := unet.NewSocket(fd) - if err != nil { - return nil, fmt.Errorf("error creating null(%d) unet socket: %v", protocol, err) - } - - go func() { - buf := make([]byte, 512) - for { - n, err := s.Read(buf) - if err != nil { - log.Warningf("failed to read: %d, %v", n, err) - return - } - } - }() - - cleanup = func() { - if err := s.Close(); err != nil { - log.Warningf("Failed to close null(%d) socket: %v", protocol, err) - } - } - - return cleanup, nil -} - -type socketCreator func(path string, proto int) (cleanup func(), err error) - -// CreateSocketTree creates a local tree of unix domain sockets for use in -// testing: -// * /stream/echo -// * /stream/nonlistening -// * /seqpacket/echo -// * /seqpacket/nonlistening -// * /dgram/null -func CreateSocketTree(baseDir string) (dir string, cleanup func(), err error) { - dir, err = ioutil.TempDir(baseDir, "sockets") - if err != nil { - return "", nil, fmt.Errorf("error creating temp dir: %v", err) - } - - var protocols = []struct { - protocol int - name string - sockets map[string]socketCreator - }{ - { - protocol: syscall.SOCK_STREAM, - name: "stream", - sockets: map[string]socketCreator{ - "echo": createEchoSocket, - "nonlistening": createNonListeningSocket, - }, - }, - { - protocol: syscall.SOCK_SEQPACKET, - name: "seqpacket", - sockets: map[string]socketCreator{ - "echo": createEchoSocket, - "nonlistening": createNonListeningSocket, - }, - }, - { - protocol: syscall.SOCK_DGRAM, - name: "dgram", - sockets: map[string]socketCreator{ - "null": createNullSocket, - }, - }, - } - - var cleanups []func() - for _, proto := range protocols { - protoDir := filepath.Join(dir, proto.name) - if err := os.Mkdir(protoDir, 0755); err != nil { - return "", nil, fmt.Errorf("error creating %s dir: %v", proto.name, err) - } - - for name, fn := range proto.sockets { - path := filepath.Join(protoDir, name) - cleanup, err := fn(path, proto.protocol) - if err != nil { - return "", nil, fmt.Errorf("error creating %s %s socket: %v", proto.name, name, err) - } - - cleanups = append(cleanups, cleanup) - } - } - - cleanup = func() { - for _, c := range cleanups { - c() - } - - os.RemoveAll(dir) - } - - return dir, cleanup, nil -} diff --git a/test/util/BUILD b/test/util/BUILD deleted file mode 100644 index 1f22ebe29..000000000 --- a/test/util/BUILD +++ /dev/null @@ -1,351 +0,0 @@ -load("//tools:defs.bzl", "cc_library", "cc_test", "gtest", "select_system") - -package( - default_visibility = ["//:sandbox"], - licenses = ["notice"], -) - -cc_library( - name = "capability_util", - testonly = 1, - srcs = ["capability_util.cc"], - hdrs = ["capability_util.h"], - deps = [ - ":cleanup", - ":memory_util", - ":posix_error", - ":save_util", - ":test_util", - "@com_google_absl//absl/strings", - ], -) - -cc_library( - name = "eventfd_util", - testonly = 1, - hdrs = ["eventfd_util.h"], - deps = [ - ":file_descriptor", - ":posix_error", - ":save_util", - ], -) - -cc_library( - name = "file_descriptor", - testonly = 1, - hdrs = ["file_descriptor.h"], - deps = [ - ":logging", - ":posix_error", - ":save_util", - "@com_google_absl//absl/strings", - "@com_google_absl//absl/strings:str_format", - gtest, - ], -) - -cc_library( - name = "proc_util", - testonly = 1, - srcs = ["proc_util.cc"], - hdrs = ["proc_util.h"], - deps = [ - ":fs_util", - ":posix_error", - ":test_util", - "@com_google_absl//absl/strings", - gtest, - ], -) - -cc_test( - name = "proc_util_test", - size = "small", - srcs = ["proc_util_test.cc"], - deps = [ - ":proc_util", - ":test_main", - ":test_util", - gtest, - ], -) - -cc_library( - name = "cleanup", - testonly = 1, - hdrs = ["cleanup.h"], -) - -cc_library( - name = "fs_util", - testonly = 1, - srcs = ["fs_util.cc"], - hdrs = ["fs_util.h"], - deps = [ - ":cleanup", - ":file_descriptor", - ":posix_error", - "@com_google_absl//absl/strings", - gtest, - ], -) - -cc_test( - name = "fs_util_test", - size = "small", - srcs = ["fs_util_test.cc"], - deps = [ - ":fs_util", - ":posix_error", - ":temp_path", - ":test_main", - ":test_util", - gtest, - ], -) - -cc_library( - name = "logging", - testonly = 1, - srcs = ["logging.cc"], - hdrs = ["logging.h"], -) - -cc_library( - name = "memory_util", - testonly = 1, - hdrs = ["memory_util.h"], - deps = [ - ":logging", - ":posix_error", - ":save_util", - ":test_util", - "@com_google_absl//absl/strings", - "@com_google_absl//absl/strings:str_format", - ], -) - -cc_library( - name = "mount_util", - testonly = 1, - hdrs = ["mount_util.h"], - deps = [ - ":cleanup", - ":posix_error", - ":test_util", - gtest, - ], -) - -cc_library( - name = "save_util", - testonly = 1, - srcs = [ - "save_util.cc", - "save_util_linux.cc", - "save_util_other.cc", - ], - hdrs = ["save_util.h"], - defines = select_system(), -) - -cc_library( - name = "multiprocess_util", - testonly = 1, - srcs = ["multiprocess_util.cc"], - hdrs = ["multiprocess_util.h"], - deps = [ - ":cleanup", - ":file_descriptor", - ":posix_error", - ":save_util", - ":test_util", - "@com_google_absl//absl/strings", - ], -) - -cc_library( - name = "platform_util", - testonly = 1, - srcs = ["platform_util.cc"], - hdrs = ["platform_util.h"], - deps = [":test_util"], -) - -cc_library( - name = "posix_error", - testonly = 1, - srcs = ["posix_error.cc"], - hdrs = ["posix_error.h"], - deps = [ - ":logging", - "@com_google_absl//absl/base:core_headers", - "@com_google_absl//absl/strings", - "@com_google_absl//absl/types:variant", - gtest, - ], -) - -cc_test( - name = "posix_error_test", - size = "small", - srcs = ["posix_error_test.cc"], - deps = [ - ":posix_error", - ":test_main", - gtest, - ], -) - -cc_library( - name = "pty_util", - testonly = 1, - srcs = ["pty_util.cc"], - hdrs = ["pty_util.h"], - deps = [ - ":file_descriptor", - ":posix_error", - ], -) - -cc_library( - name = "signal_util", - testonly = 1, - srcs = ["signal_util.cc"], - hdrs = ["signal_util.h"], - deps = [ - ":cleanup", - ":posix_error", - ":test_util", - gtest, - ], -) - -cc_library( - name = "temp_path", - testonly = 1, - srcs = ["temp_path.cc"], - hdrs = ["temp_path.h"], - deps = [ - ":fs_util", - ":posix_error", - ":test_util", - "@com_google_absl//absl/strings", - "@com_google_absl//absl/time", - gtest, - ], -) - -cc_library( - name = "test_util", - testonly = 1, - srcs = [ - "test_util.cc", - "test_util_impl.cc", - "test_util_runfiles.cc", - ], - hdrs = ["test_util.h"], - defines = select_system(), - deps = [ - ":fs_util", - ":logging", - ":posix_error", - ":save_util", - "@bazel_tools//tools/cpp/runfiles", - "@com_google_absl//absl/base:core_headers", - "@com_google_absl//absl/flags:flag", - "@com_google_absl//absl/flags:parse", - "@com_google_absl//absl/strings", - "@com_google_absl//absl/strings:str_format", - "@com_google_absl//absl/time", - gtest, - ], -) - -cc_library( - name = "thread_util", - testonly = 1, - hdrs = ["thread_util.h"], - deps = [":logging"], -) - -cc_library( - name = "time_util", - testonly = 1, - srcs = ["time_util.cc"], - hdrs = ["time_util.h"], - deps = [ - "@com_google_absl//absl/time", - ], -) - -cc_library( - name = "timer_util", - testonly = 1, - srcs = ["timer_util.cc"], - hdrs = ["timer_util.h"], - deps = [ - ":cleanup", - ":logging", - ":posix_error", - ":test_util", - "@com_google_absl//absl/time", - gtest, - ], -) - -cc_test( - name = "test_util_test", - size = "small", - srcs = ["test_util_test.cc"], - deps = [ - ":test_main", - ":test_util", - gtest, - ], -) - -cc_library( - name = "test_main", - testonly = 1, - srcs = ["test_main.cc"], - deps = [":test_util"], -) - -cc_library( - name = "epoll_util", - testonly = 1, - srcs = ["epoll_util.cc"], - hdrs = ["epoll_util.h"], - deps = [ - ":file_descriptor", - ":posix_error", - ":save_util", - gtest, - ], -) - -cc_library( - name = "rlimit_util", - testonly = 1, - srcs = ["rlimit_util.cc"], - hdrs = ["rlimit_util.h"], - deps = [ - ":cleanup", - ":logging", - ":posix_error", - ":test_util", - ], -) - -cc_library( - name = "uid_util", - testonly = 1, - srcs = ["uid_util.cc"], - hdrs = ["uid_util.h"], - deps = [ - ":posix_error", - ":save_util", - ], -) diff --git a/test/util/capability_util.cc b/test/util/capability_util.cc deleted file mode 100644 index 9fee52fbb..000000000 --- a/test/util/capability_util.cc +++ /dev/null @@ -1,81 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/util/capability_util.h" - -#include <linux/capability.h> -#include <sched.h> -#include <sys/mman.h> -#include <sys/wait.h> - -#include <iostream> - -#include "absl/strings/str_cat.h" -#include "test/util/memory_util.h" -#include "test/util/posix_error.h" -#include "test/util/save_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -PosixErrorOr<bool> CanCreateUserNamespace() { - // The most reliable way to determine if userns creation is possible is by - // trying to create one; see below. - ASSIGN_OR_RETURN_ERRNO( - auto child_stack, - MmapAnon(kPageSize, PROT_READ | PROT_WRITE, MAP_PRIVATE)); - int const child_pid = clone( - +[](void*) { return 0; }, - reinterpret_cast<void*>(child_stack.addr() + kPageSize), - CLONE_NEWUSER | SIGCHLD, /* arg = */ nullptr); - if (child_pid > 0) { - int status; - int const ret = waitpid(child_pid, &status, /* options = */ 0); - MaybeSave(); - if (ret < 0) { - return PosixError(errno, "waitpid"); - } - if (!WIFEXITED(status) || WEXITSTATUS(status) != 0) { - return PosixError( - ESRCH, absl::StrCat("child process exited with status ", status)); - } - return true; - } else if (errno == EPERM) { - // Per clone(2), EPERM can be returned if: - // - // - "CLONE_NEWUSER was specified in flags, but either the effective user ID - // or the effective group ID of the caller does not have a mapping in the - // parent namespace (see user_namespaces(7))." - // - // - "(since Linux 3.9) CLONE_NEWUSER was specified in flags and the caller - // is in a chroot environment (i.e., the caller's root directory does - // not match the root directory of the mount namespace in which it - // resides)." - std::cerr << "clone(CLONE_NEWUSER) failed with EPERM"; - return false; - } else if (errno == EUSERS) { - // "(since Linux 3.11) CLONE_NEWUSER was specified in flags, and the call - // would cause the limit on the number of nested user namespaces to be - // exceeded. See user_namespaces(7)." - std::cerr << "clone(CLONE_NEWUSER) failed with EUSERS"; - return false; - } else { - // Unexpected error code; indicate an actual error. - return PosixError(errno, "clone(CLONE_NEWUSER)"); - } -} - -} // namespace testing -} // namespace gvisor diff --git a/test/util/capability_util.h b/test/util/capability_util.h deleted file mode 100644 index bb9ea1fe5..000000000 --- a/test/util/capability_util.h +++ /dev/null @@ -1,101 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// Utilities for testing capabilities. - -#ifndef GVISOR_TEST_UTIL_CAPABILITY_UTIL_H_ -#define GVISOR_TEST_UTIL_CAPABILITY_UTIL_H_ - -#include <errno.h> -#include <linux/capability.h> -#include <sys/syscall.h> -#include <unistd.h> - -#include "test/util/cleanup.h" -#include "test/util/posix_error.h" -#include "test/util/save_util.h" -#include "test/util/test_util.h" - -#ifndef _LINUX_CAPABILITY_VERSION_3 -#error Expecting _LINUX_CAPABILITY_VERSION_3 support -#endif - -namespace gvisor { -namespace testing { - -// HaveCapability returns true if the process has the specified EFFECTIVE -// capability. -inline PosixErrorOr<bool> HaveCapability(int cap) { - if (!cap_valid(cap)) { - return PosixError(EINVAL, "Invalid capability"); - } - - struct __user_cap_header_struct header = {_LINUX_CAPABILITY_VERSION_3, 0}; - struct __user_cap_data_struct caps[_LINUX_CAPABILITY_U32S_3] = {}; - RETURN_ERROR_IF_SYSCALL_FAIL(syscall(__NR_capget, &header, &caps)); - MaybeSave(); - - return (caps[CAP_TO_INDEX(cap)].effective & CAP_TO_MASK(cap)) != 0; -} - -// SetCapability sets the specified EFFECTIVE capability. -inline PosixError SetCapability(int cap, bool set) { - if (!cap_valid(cap)) { - return PosixError(EINVAL, "Invalid capability"); - } - - struct __user_cap_header_struct header = {_LINUX_CAPABILITY_VERSION_3, 0}; - struct __user_cap_data_struct caps[_LINUX_CAPABILITY_U32S_3] = {}; - RETURN_ERROR_IF_SYSCALL_FAIL(syscall(__NR_capget, &header, &caps)); - MaybeSave(); - - if (set) { - caps[CAP_TO_INDEX(cap)].effective |= CAP_TO_MASK(cap); - } else { - caps[CAP_TO_INDEX(cap)].effective &= ~CAP_TO_MASK(cap); - } - header = {_LINUX_CAPABILITY_VERSION_3, 0}; - RETURN_ERROR_IF_SYSCALL_FAIL(syscall(__NR_capset, &header, &caps)); - MaybeSave(); - - return NoError(); -} - -// DropPermittedCapability drops the specified PERMITTED. The EFFECTIVE -// capabilities must be a subset of PERMITTED, so those are dropped as well. -inline PosixError DropPermittedCapability(int cap) { - if (!cap_valid(cap)) { - return PosixError(EINVAL, "Invalid capability"); - } - - struct __user_cap_header_struct header = {_LINUX_CAPABILITY_VERSION_3, 0}; - struct __user_cap_data_struct caps[_LINUX_CAPABILITY_U32S_3] = {}; - RETURN_ERROR_IF_SYSCALL_FAIL(syscall(__NR_capget, &header, &caps)); - MaybeSave(); - - caps[CAP_TO_INDEX(cap)].effective &= ~CAP_TO_MASK(cap); - caps[CAP_TO_INDEX(cap)].permitted &= ~CAP_TO_MASK(cap); - - header = {_LINUX_CAPABILITY_VERSION_3, 0}; - RETURN_ERROR_IF_SYSCALL_FAIL(syscall(__NR_capset, &header, &caps)); - MaybeSave(); - - return NoError(); -} - -PosixErrorOr<bool> CanCreateUserNamespace(); - -} // namespace testing -} // namespace gvisor -#endif // GVISOR_TEST_UTIL_CAPABILITY_UTIL_H_ diff --git a/test/util/cleanup.h b/test/util/cleanup.h deleted file mode 100644 index c76482ef4..000000000 --- a/test/util/cleanup.h +++ /dev/null @@ -1,61 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_UTIL_CLEANUP_H_ -#define GVISOR_TEST_UTIL_CLEANUP_H_ - -#include <functional> -#include <utility> - -namespace gvisor { -namespace testing { - -class Cleanup { - public: - Cleanup() : released_(true) {} - explicit Cleanup(std::function<void()>&& callback) : cb_(callback) {} - - Cleanup(Cleanup&& other) { - released_ = other.released_; - cb_ = other.Release(); - } - - Cleanup& operator=(Cleanup&& other) { - released_ = other.released_; - cb_ = other.Release(); - return *this; - } - - ~Cleanup() { - if (!released_) { - cb_(); - } - } - - std::function<void()>&& Release() { - released_ = true; - return std::move(cb_); - } - - private: - Cleanup(Cleanup const& other) = delete; - - bool released_ = false; - std::function<void(void)> cb_; -}; - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_UTIL_CLEANUP_H_ diff --git a/test/util/epoll_util.cc b/test/util/epoll_util.cc deleted file mode 100644 index 2e5051468..000000000 --- a/test/util/epoll_util.cc +++ /dev/null @@ -1,52 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/util/epoll_util.h" - -#include <sys/epoll.h> - -#include "gmock/gmock.h" -#include "test/util/file_descriptor.h" -#include "test/util/posix_error.h" -#include "test/util/save_util.h" - -namespace gvisor { -namespace testing { - -PosixErrorOr<FileDescriptor> NewEpollFD(int size) { - // "Since Linux 2.6.8, the size argument is ignored, but must be greater than - // zero." - epoll_create(2) - int fd = epoll_create(size); - MaybeSave(); - if (fd < 0) { - return PosixError(errno, "epoll_create"); - } - return FileDescriptor(fd); -} - -PosixError RegisterEpollFD(int epoll_fd, int target_fd, int events, - uint64_t data) { - struct epoll_event event; - event.events = events; - event.data.u64 = data; - int rc = epoll_ctl(epoll_fd, EPOLL_CTL_ADD, target_fd, &event); - MaybeSave(); - if (rc < 0) { - return PosixError(errno, "epoll_ctl"); - } - return NoError(); -} - -} // namespace testing -} // namespace gvisor diff --git a/test/util/epoll_util.h b/test/util/epoll_util.h deleted file mode 100644 index f233b37d5..000000000 --- a/test/util/epoll_util.h +++ /dev/null @@ -1,36 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_UTIL_EPOLL_UTIL_H_ -#define GVISOR_TEST_UTIL_EPOLL_UTIL_H_ - -#include "test/util/file_descriptor.h" -#include "test/util/posix_error.h" - -namespace gvisor { -namespace testing { - -// Returns a new epoll file descriptor. -PosixErrorOr<FileDescriptor> NewEpollFD(int size = 1); - -// Registers `target_fd` with the epoll instance represented by `epoll_fd` for -// the epoll events `events`. Events on `target_fd` will be indicated by setting -// data.u64 to `data` in the returned epoll_event. -PosixError RegisterEpollFD(int epoll_fd, int target_fd, int events, - uint64_t data); - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_UTIL_EPOLL_UTIL_H_ diff --git a/test/util/eventfd_util.h b/test/util/eventfd_util.h deleted file mode 100644 index cb9ce829c..000000000 --- a/test/util/eventfd_util.h +++ /dev/null @@ -1,43 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_UTIL_EVENTFD_UTIL_H_ -#define GVISOR_TEST_UTIL_EVENTFD_UTIL_H_ - -#include <sys/eventfd.h> - -#include <cerrno> - -#include "test/util/file_descriptor.h" -#include "test/util/posix_error.h" -#include "test/util/save_util.h" - -namespace gvisor { -namespace testing { - -// Returns a new eventfd with the given initial value and flags. -inline PosixErrorOr<FileDescriptor> NewEventFD(unsigned int initval = 0, - int flags = 0) { - int fd = eventfd(initval, flags); - MaybeSave(); - if (fd < 0) { - return PosixError(errno, "eventfd"); - } - return FileDescriptor(fd); -} - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_UTIL_EVENTFD_UTIL_H_ diff --git a/test/util/file_descriptor.h b/test/util/file_descriptor.h deleted file mode 100644 index fc5caa55b..000000000 --- a/test/util/file_descriptor.h +++ /dev/null @@ -1,134 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_UTIL_FILE_DESCRIPTOR_H_ -#define GVISOR_TEST_UTIL_FILE_DESCRIPTOR_H_ - -#include <fcntl.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <unistd.h> - -#include <algorithm> -#include <string> - -#include "gmock/gmock.h" -#include "absl/strings/str_cat.h" -#include "absl/strings/str_format.h" -#include "test/util/logging.h" -#include "test/util/posix_error.h" -#include "test/util/save_util.h" - -namespace gvisor { -namespace testing { - -// FileDescriptor is an RAII type class which takes ownership of a file -// descriptor. It will close the FD when this object goes out of scope. -class FileDescriptor { - public: - // Constructs an empty FileDescriptor (one that does not own a file - // descriptor). - FileDescriptor() = default; - - // Constructs a FileDescriptor that owns fd. If fd is negative, constructs an - // empty FileDescriptor. - explicit FileDescriptor(int fd) { set_fd(fd); } - - FileDescriptor(FileDescriptor&& orig) : fd_(orig.release()) {} - - FileDescriptor& operator=(FileDescriptor&& orig) { - reset(orig.release()); - return *this; - } - - PosixErrorOr<FileDescriptor> Dup() const { - if (fd_ < 0) { - return PosixError(EINVAL, "Attempting to Dup unset fd"); - } - - int fd = dup(fd_); - if (fd < 0) { - return PosixError(errno, absl::StrCat("dup ", fd_)); - } - MaybeSave(); - return FileDescriptor(fd); - } - - FileDescriptor(FileDescriptor const& other) = delete; - FileDescriptor& operator=(FileDescriptor const& other) = delete; - - ~FileDescriptor() { reset(); } - - // If this object is non-empty, returns the owned file descriptor. (Ownership - // is retained by the FileDescriptor.) Otherwise returns -1. - int get() const { return fd_; } - - // If this object is non-empty, transfers ownership of the file descriptor to - // the caller and returns it. Otherwise returns -1. - int release() { - int const fd = fd_; - fd_ = -1; - return fd; - } - - // If this object is non-empty, closes the owned file descriptor (recording a - // test failure if the close fails). - void reset() { reset(-1); } - - // Like no-arg reset(), but the FileDescriptor takes ownership of fd after - // closing its existing file descriptor. - void reset(int fd) { - if (fd_ >= 0) { - TEST_PCHECK(close(fd_) == 0); - MaybeSave(); - } - set_fd(fd); - } - - private: - // Wrapper that coerces negative fd values other than -1 to -1 so that get() - // etc. return -1. - void set_fd(int fd) { fd_ = std::max(fd, -1); } - - int fd_ = -1; -}; - -// Wrapper around open(2) that returns a FileDescriptor. -inline PosixErrorOr<FileDescriptor> Open(std::string const& path, int flags, - mode_t mode = 0) { - int fd = open(path.c_str(), flags, mode); - if (fd < 0) { - return PosixError(errno, absl::StrFormat("open(%s, %#x, %#o)", path.c_str(), - flags, mode)); - } - MaybeSave(); - return FileDescriptor(fd); -} - -// Wrapper around openat(2) that returns a FileDescriptor. -inline PosixErrorOr<FileDescriptor> OpenAt(int dirfd, std::string const& path, - int flags, mode_t mode = 0) { - int fd = openat(dirfd, path.c_str(), flags, mode); - if (fd < 0) { - return PosixError(errno, absl::StrFormat("openat(%d, %s, %#x, %#o)", dirfd, - path, flags, mode)); - } - MaybeSave(); - return FileDescriptor(fd); -} - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_UTIL_FILE_DESCRIPTOR_H_ diff --git a/test/util/fs_util.cc b/test/util/fs_util.cc deleted file mode 100644 index 052781445..000000000 --- a/test/util/fs_util.cc +++ /dev/null @@ -1,633 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/util/fs_util.h" - -#include <dirent.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <unistd.h> - -#include "gmock/gmock.h" -#include "absl/strings/match.h" -#include "absl/strings/str_cat.h" -#include "absl/strings/str_split.h" -#include "absl/strings/string_view.h" -#include "test/util/cleanup.h" -#include "test/util/file_descriptor.h" -#include "test/util/posix_error.h" - -namespace gvisor { -namespace testing { - -namespace { -PosixError WriteContentsToFD(int fd, absl::string_view contents) { - int written = 0; - while (static_cast<absl::string_view::size_type>(written) < contents.size()) { - int wrote = write(fd, contents.data() + written, contents.size() - written); - if (wrote < 0) { - if (errno == EINTR) { - continue; - } - return PosixError( - errno, absl::StrCat("WriteContentsToFD fd: ", fd, " write failure.")); - } - written += wrote; - } - return NoError(); -} -} // namespace - -namespace internal { - -// Given a collection of file paths, append them all together, -// ensuring that the proper path separators are inserted between them. -std::string JoinPathImpl(std::initializer_list<absl::string_view> paths) { - std::string result; - - if (paths.size() != 0) { - // This size calculation is worst-case: it assumes one extra "/" for every - // path other than the first. - size_t total_size = paths.size() - 1; - for (const absl::string_view path : paths) total_size += path.size(); - result.resize(total_size); - - auto begin = result.begin(); - auto out = begin; - bool trailing_slash = false; - for (absl::string_view path : paths) { - if (path.empty()) continue; - if (path.front() == '/') { - if (trailing_slash) { - path.remove_prefix(1); - } - } else { - if (!trailing_slash && out != begin) *out++ = '/'; - } - const size_t this_size = path.size(); - memcpy(&*out, path.data(), this_size); - out += this_size; - trailing_slash = out[-1] == '/'; - } - result.erase(out - begin); - } - return result; -} -} // namespace internal - -// Returns a status or the current working directory. -PosixErrorOr<std::string> GetCWD() { - char buffer[PATH_MAX + 1] = {}; - if (getcwd(buffer, PATH_MAX) == nullptr) { - return PosixError(errno, "GetCWD() failed"); - } - - return std::string(buffer); -} - -PosixErrorOr<struct stat> Stat(absl::string_view path) { - struct stat stat_buf; - int res = stat(std::string(path).c_str(), &stat_buf); - if (res < 0) { - return PosixError(errno, absl::StrCat("stat ", path)); - } - return stat_buf; -} - -PosixErrorOr<struct stat> Lstat(absl::string_view path) { - struct stat stat_buf; - int res = lstat(std::string(path).c_str(), &stat_buf); - if (res < 0) { - return PosixError(errno, absl::StrCat("lstat ", path)); - } - return stat_buf; -} - -PosixErrorOr<struct stat> Fstat(int fd) { - struct stat stat_buf; - int res = fstat(fd, &stat_buf); - if (res < 0) { - return PosixError(errno, absl::StrCat("fstat ", fd)); - } - return stat_buf; -} - -PosixErrorOr<bool> Exists(absl::string_view path) { - struct stat stat_buf; - int res = stat(std::string(path).c_str(), &stat_buf); - if (res < 0) { - if (errno == ENOENT) { - return false; - } - return PosixError(errno, absl::StrCat("stat ", path)); - } - return true; -} - -PosixErrorOr<bool> IsDirectory(absl::string_view path) { - ASSIGN_OR_RETURN_ERRNO(struct stat stat_buf, Lstat(path)); - if (S_ISDIR(stat_buf.st_mode)) { - return true; - } - - return false; -} - -PosixError Delete(absl::string_view path) { - int res = unlink(std::string(path).c_str()); - if (res < 0) { - return PosixError(errno, absl::StrCat("unlink ", path)); - } - - return NoError(); -} - -PosixError Truncate(absl::string_view path, int length) { - int res = truncate(std::string(path).c_str(), length); - if (res < 0) { - return PosixError(errno, - absl::StrCat("truncate ", path, " to length ", length)); - } - - return NoError(); -} - -PosixError Chmod(absl::string_view path, int mode) { - int res = chmod(std::string(path).c_str(), mode); - if (res < 0) { - return PosixError(errno, absl::StrCat("chmod ", path)); - } - - return NoError(); -} - -PosixError MknodAt(const FileDescriptor& dfd, absl::string_view path, int mode, - dev_t dev) { - int res = mknodat(dfd.get(), std::string(path).c_str(), mode, dev); - if (res < 0) { - return PosixError(errno, absl::StrCat("mknod ", path)); - } - - return NoError(); -} - -PosixError UnlinkAt(const FileDescriptor& dfd, absl::string_view path, - int flags) { - int res = unlinkat(dfd.get(), std::string(path).c_str(), flags); - if (res < 0) { - return PosixError(errno, absl::StrCat("unlink ", path)); - } - - return NoError(); -} - -PosixError Mkdir(absl::string_view path, int mode) { - int res = mkdir(std::string(path).c_str(), mode); - if (res < 0) { - return PosixError(errno, absl::StrCat("mkdir ", path, " mode ", mode)); - } - - return NoError(); -} - -PosixError Rmdir(absl::string_view path) { - int res = rmdir(std::string(path).c_str()); - if (res < 0) { - return PosixError(errno, absl::StrCat("rmdir ", path)); - } - - return NoError(); -} - -PosixError SetContents(absl::string_view path, absl::string_view contents) { - ASSIGN_OR_RETURN_ERRNO(bool exists, Exists(path)); - if (!exists) { - return PosixError( - ENOENT, absl::StrCat("SetContents file ", path, " doesn't exist.")); - } - - ASSIGN_OR_RETURN_ERRNO(auto fd, Open(std::string(path), O_WRONLY | O_TRUNC)); - return WriteContentsToFD(fd.get(), contents); -} - -// Create a file with the given contents (if it does not already exist with the -// given mode) and then set the contents. -PosixError CreateWithContents(absl::string_view path, - absl::string_view contents, int mode) { - ASSIGN_OR_RETURN_ERRNO( - auto fd, Open(std::string(path), O_WRONLY | O_CREAT | O_TRUNC, mode)); - return WriteContentsToFD(fd.get(), contents); -} - -PosixError GetContents(absl::string_view path, std::string* output) { - ASSIGN_OR_RETURN_ERRNO(auto fd, Open(std::string(path), O_RDONLY)); - output->clear(); - - // Keep reading until we hit an EOF or an error. - return GetContentsFD(fd.get(), output); -} - -PosixErrorOr<std::string> GetContents(absl::string_view path) { - std::string ret; - RETURN_IF_ERRNO(GetContents(path, &ret)); - return ret; -} - -PosixErrorOr<std::string> GetContentsFD(int fd) { - std::string ret; - RETURN_IF_ERRNO(GetContentsFD(fd, &ret)); - return ret; -} - -PosixError GetContentsFD(int fd, std::string* output) { - // Keep reading until we hit an EOF or an error. - while (true) { - char buf[16 * 1024] = {}; // Read in 16KB chunks. - int bytes_read = read(fd, buf, sizeof(buf)); - if (bytes_read < 0) { - if (errno == EINTR) { - continue; - } - return PosixError(errno, "GetContentsFD read failure."); - } - - if (bytes_read == 0) { - break; // EOF. - } - - output->append(buf, bytes_read); - } - return NoError(); -} - -PosixErrorOr<std::string> ReadLink(absl::string_view path) { - char buf[PATH_MAX + 1] = {}; - int ret = readlink(std::string(path).c_str(), buf, PATH_MAX); - if (ret < 0) { - return PosixError(errno, absl::StrCat("readlink ", path)); - } - - return std::string(buf, ret); -} - -PosixError WalkTree( - absl::string_view path, bool recursive, - const std::function<void(absl::string_view, const struct stat&)>& cb) { - DIR* dir = opendir(std::string(path).c_str()); - if (dir == nullptr) { - return PosixError(errno, absl::StrCat("opendir ", path)); - } - auto dir_closer = Cleanup([&dir]() { closedir(dir); }); - while (true) { - // Readdir(3): If the end of the directory stream is reached, NULL is - // returned and errno is not changed. If an error occurs, NULL is returned - // and errno is set appropriately. To distinguish end of stream and from an - // error, set errno to zero before calling readdir() and then check the - // value of errno if NULL is returned. - errno = 0; - struct dirent* dp = readdir(dir); - if (dp == nullptr) { - if (errno != 0) { - return PosixError(errno, absl::StrCat("readdir ", path)); - } - break; // We're done. - } - - if (strcmp(dp->d_name, ".") == 0 || strcmp(dp->d_name, "..") == 0) { - // Skip dots. - continue; - } - - auto full_path = JoinPath(path, dp->d_name); - ASSIGN_OR_RETURN_ERRNO(struct stat s, Stat(full_path)); - if (S_ISDIR(s.st_mode) && recursive) { - RETURN_IF_ERRNO(WalkTree(full_path, recursive, cb)); - } else { - cb(full_path, s); - } - } - // We're done walking so let's invoke our cleanup callback now. - dir_closer.Release()(); - - // And we have to dispatch the callback on the base directory. - ASSIGN_OR_RETURN_ERRNO(struct stat s, Stat(path)); - cb(path, s); - - return NoError(); -} - -PosixErrorOr<std::vector<std::string>> ListDir(absl::string_view abspath, - bool skipdots) { - std::vector<std::string> files; - - DIR* dir = opendir(std::string(abspath).c_str()); - if (dir == nullptr) { - return PosixError(errno, absl::StrCat("opendir ", abspath)); - } - auto dir_closer = Cleanup([&dir]() { closedir(dir); }); - while (true) { - // Readdir(3): If the end of the directory stream is reached, NULL is - // returned and errno is not changed. If an error occurs, NULL is returned - // and errno is set appropriately. To distinguish end of stream and from an - // error, set errno to zero before calling readdir() and then check the - // value of errno if NULL is returned. - errno = 0; - struct dirent* dp = readdir(dir); - if (dp == nullptr) { - if (errno != 0) { - return PosixError(errno, absl::StrCat("readdir ", abspath)); - } - break; // We're done. - } - - if (strcmp(dp->d_name, ".") == 0 || strcmp(dp->d_name, "..") == 0) { - if (skipdots) { - continue; - } - } - files.push_back(std::string(dp->d_name)); - } - - return files; -} - -PosixError RecursivelyDelete(absl::string_view path, int* undeleted_dirs, - int* undeleted_files) { - ASSIGN_OR_RETURN_ERRNO(bool exists, Exists(path)); - if (!exists) { - return PosixError(ENOENT, absl::StrCat(path, " does not exist")); - } - - ASSIGN_OR_RETURN_ERRNO(bool dir, IsDirectory(path)); - if (!dir) { - // Nothing recursive needs to happen we can just call Delete. - auto status = Delete(path); - if (!status.ok() && undeleted_files) { - (*undeleted_files)++; - } - return status; - } - - return WalkTree(path, /*recursive=*/true, - [&](absl::string_view absolute_path, const struct stat& s) { - if (S_ISDIR(s.st_mode)) { - auto rm_status = Rmdir(absolute_path); - if (!rm_status.ok() && undeleted_dirs) { - (*undeleted_dirs)++; - } - } else { - auto delete_status = Delete(absolute_path); - if (!delete_status.ok() && undeleted_files) { - (*undeleted_files)++; - } - } - }); -} - -PosixError RecursivelyCreateDir(absl::string_view path) { - if (path.empty() || path == "/") { - return PosixError(EINVAL, "Cannot create root!"); - } - - // Does it already exist, if so we're done. - ASSIGN_OR_RETURN_ERRNO(bool exists, Exists(path)); - if (exists) { - return NoError(); - } - - // Do we need to create directories under us? - auto dirname = Dirname(path); - ASSIGN_OR_RETURN_ERRNO(exists, Exists(dirname)); - if (!exists) { - RETURN_IF_ERRNO(RecursivelyCreateDir(dirname)); - } - - return Mkdir(path); -} - -// Makes a path absolute with respect to an optional base. If no base is -// provided it will use the current working directory. -PosixErrorOr<std::string> MakeAbsolute(absl::string_view filename, - absl::string_view base) { - if (filename.empty()) { - return PosixError(EINVAL, "filename cannot be empty."); - } - - if (filename[0] == '/') { - // This path is already absolute. - return std::string(filename); - } - - std::string actual_base; - if (!base.empty()) { - actual_base = std::string(base); - } else { - auto cwd_or = GetCWD(); - RETURN_IF_ERRNO(cwd_or.error()); - actual_base = cwd_or.ValueOrDie(); - } - - // Reverse iterate removing trailing slashes, effectively right trim '/'. - for (int i = actual_base.size() - 1; i >= 0 && actual_base[i] == '/'; --i) { - actual_base.erase(i, 1); - } - - if (filename == ".") { - return actual_base.empty() ? "/" : actual_base; - } - - return absl::StrCat(actual_base, "/", filename); -} - -std::string CleanPath(const absl::string_view unclean_path) { - std::string path = std::string(unclean_path); - const char* src = path.c_str(); - std::string::iterator dst = path.begin(); - - // Check for absolute path and determine initial backtrack limit. - const bool is_absolute_path = *src == '/'; - if (is_absolute_path) { - *dst++ = *src++; - while (*src == '/') ++src; - } - std::string::const_iterator backtrack_limit = dst; - - // Process all parts - while (*src) { - bool parsed = false; - - if (src[0] == '.') { - // 1dot ".<whateverisnext>", check for END or SEP. - if (src[1] == '/' || !src[1]) { - if (*++src) { - ++src; - } - parsed = true; - } else if (src[1] == '.' && (src[2] == '/' || !src[2])) { - // 2dot END or SEP (".." | "../<whateverisnext>"). - src += 2; - if (dst != backtrack_limit) { - // We can backtrack the previous part - for (--dst; dst != backtrack_limit && dst[-1] != '/'; --dst) { - // Empty. - } - } else if (!is_absolute_path) { - // Failed to backtrack and we can't skip it either. Rewind and copy. - src -= 2; - *dst++ = *src++; - *dst++ = *src++; - if (*src) { - *dst++ = *src; - } - // We can never backtrack over a copied "../" part so set new limit. - backtrack_limit = dst; - } - if (*src) { - ++src; - } - parsed = true; - } - } - - // If not parsed, copy entire part until the next SEP or EOS. - if (!parsed) { - while (*src && *src != '/') { - *dst++ = *src++; - } - if (*src) { - *dst++ = *src++; - } - } - - // Skip consecutive SEP occurrences - while (*src == '/') { - ++src; - } - } - - // Calculate and check the length of the cleaned path. - int path_length = dst - path.begin(); - if (path_length != 0) { - // Remove trailing '/' except if it is root path ("/" ==> path_length := 1) - if (path_length > 1 && path[path_length - 1] == '/') { - --path_length; - } - path.resize(path_length); - } else { - // The cleaned path is empty; assign "." as per the spec. - path.assign(1, '.'); - } - return path; -} - -PosixErrorOr<std::string> GetRelativePath(absl::string_view source, - absl::string_view dest) { - if (!absl::StartsWith(source, "/") || !absl::StartsWith(dest, "/")) { - // At least one of the inputs is not an absolute path. - return PosixError( - EINVAL, - "GetRelativePath: At least one of the inputs is not an absolute path."); - } - const std::string clean_source = CleanPath(source); - const std::string clean_dest = CleanPath(dest); - auto source_parts = absl::StrSplit(clean_source, '/', absl::SkipEmpty()); - auto dest_parts = absl::StrSplit(clean_dest, '/', absl::SkipEmpty()); - auto source_iter = source_parts.begin(); - auto dest_iter = dest_parts.begin(); - - // Advance past common prefix. - while (source_iter != source_parts.end() && dest_iter != dest_parts.end() && - *source_iter == *dest_iter) { - ++source_iter; - ++dest_iter; - } - - // Build result backtracking. - std::string result = ""; - while (source_iter != source_parts.end()) { - absl::StrAppend(&result, "../"); - ++source_iter; - } - - // Add remaining path to dest. - while (dest_iter != dest_parts.end()) { - absl::StrAppend(&result, *dest_iter, "/"); - ++dest_iter; - } - - if (result.empty()) { - return std::string("."); - } - - // Remove trailing slash. - result.erase(result.size() - 1); - return result; -} - -absl::string_view Dirname(absl::string_view path) { - return SplitPath(path).first; -} - -absl::string_view Basename(absl::string_view path) { - return SplitPath(path).second; -} - -std::pair<absl::string_view, absl::string_view> SplitPath( - absl::string_view path) { - std::string::size_type pos = path.find_last_of('/'); - - // Handle the case with no '/' in 'path'. - if (pos == absl::string_view::npos) { - return std::make_pair(path.substr(0, 0), path); - } - - // Handle the case with a single leading '/' in 'path'. - if (pos == 0) { - return std::make_pair(path.substr(0, 1), absl::ClippedSubstr(path, 1)); - } - - return std::make_pair(path.substr(0, pos), - absl::ClippedSubstr(path, pos + 1)); -} - -std::string JoinPath(absl::string_view path1, absl::string_view path2) { - if (path1.empty()) { - return std::string(path2); - } - if (path2.empty()) { - return std::string(path1); - } - - if (path1.back() == '/') { - if (path2.front() == '/') { - return absl::StrCat(path1, absl::ClippedSubstr(path2, 1)); - } - } else { - if (path2.front() != '/') { - return absl::StrCat(path1, "/", path2); - } - } - return absl::StrCat(path1, path2); -} - -PosixErrorOr<std::string> ProcessExePath(int pid) { - if (pid <= 0) { - return PosixError(EINVAL, "Invalid pid specified"); - } - - return ReadLink(absl::StrCat("/proc/", pid, "/exe")); -} - -} // namespace testing -} // namespace gvisor diff --git a/test/util/fs_util.h b/test/util/fs_util.h deleted file mode 100644 index caf19b24d..000000000 --- a/test/util/fs_util.h +++ /dev/null @@ -1,205 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_UTIL_FS_UTIL_H_ -#define GVISOR_TEST_UTIL_FS_UTIL_H_ - -#include <dirent.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <unistd.h> - -#include "absl/strings/string_view.h" -#include "test/util/file_descriptor.h" -#include "test/util/posix_error.h" - -namespace gvisor { -namespace testing { - -// O_LARGEFILE as defined by Linux. glibc tries to be clever by setting it to 0 -// because "it isn't needed", even though Linux can return it via F_GETFL. -#if defined(__x86_64__) -constexpr int kOLargeFile = 00100000; -#elif defined(__aarch64__) -constexpr int kOLargeFile = 00400000; -#else -#error "Unknown architecture" -#endif - -// Returns a status or the current working directory. -PosixErrorOr<std::string> GetCWD(); - -// Returns true/false depending on whether or not path exists, or an error if it -// can't be determined. -PosixErrorOr<bool> Exists(absl::string_view path); - -// Returns a stat structure for the given path or an error. -PosixErrorOr<struct stat> Stat(absl::string_view path); - -// Returns a stat struct for the given fd. -PosixErrorOr<struct stat> Fstat(int fd); - -// Deletes the file or directory at path or returns an error. -PosixError Delete(absl::string_view path); - -// Changes the mode of a file or returns an error. -PosixError Chmod(absl::string_view path, int mode); - -// Create a special or ordinary file. -PosixError MknodAt(const FileDescriptor& dfd, absl::string_view path, int mode, - dev_t dev); - -// Unlink the file. -PosixError UnlinkAt(const FileDescriptor& dfd, absl::string_view path, - int flags); - -// Truncates a file to the given length or returns an error. -PosixError Truncate(absl::string_view path, int length); - -// Returns true/false depending on whether or not the path is a directory or -// returns an error. -PosixErrorOr<bool> IsDirectory(absl::string_view path); - -// Makes a directory or returns an error. -PosixError Mkdir(absl::string_view path, int mode = 0755); - -// Removes a directory or returns an error. -PosixError Rmdir(absl::string_view path); - -// Attempts to set the contents of a file or returns an error. -PosixError SetContents(absl::string_view path, absl::string_view contents); - -// Creates a file with the given contents and mode or returns an error. -PosixError CreateWithContents(absl::string_view path, - absl::string_view contents, int mode = 0666); - -// Attempts to read the entire contents of the file into the provided string -// buffer or returns an error. -PosixError GetContents(absl::string_view path, std::string* output); - -// Attempts to read the entire contents of the file or returns an error. -PosixErrorOr<std::string> GetContents(absl::string_view path); - -// Attempts to read the entire contents of the provided fd into the provided -// string or returns an error. -PosixError GetContentsFD(int fd, std::string* output); - -// Attempts to read the entire contents of the provided fd or returns an error. -PosixErrorOr<std::string> GetContentsFD(int fd); - -// Executes the readlink(2) system call or returns an error. -PosixErrorOr<std::string> ReadLink(absl::string_view path); - -// WalkTree will walk a directory tree in a depth first search manner (if -// recursive). It will invoke a provided callback for each file and directory, -// the parent will always be invoked last making this appropriate for things -// such as deleting an entire directory tree. -// -// This method will return an error when it's unable to access the provided -// path, or when the path is not a directory. -PosixError WalkTree( - absl::string_view path, bool recursive, - const std::function<void(absl::string_view, const struct stat&)>& cb); - -// Returns the base filenames for all files under a given absolute path. If -// skipdots is true the returned vector will not contain "." or "..". This -// method does not walk the tree recursively it only returns the elements -// in that directory. -PosixErrorOr<std::vector<std::string>> ListDir(absl::string_view abspath, - bool skipdots); - -// Attempt to recursively delete a directory or file. Returns an error and -// the number of undeleted directories and files. If either -// undeleted_dirs or undeleted_files is nullptr then it will not be used. -PosixError RecursivelyDelete(absl::string_view path, int* undeleted_dirs, - int* undeleted_files); - -// Recursively create the directory provided or return an error. -PosixError RecursivelyCreateDir(absl::string_view path); - -// Makes a path absolute with respect to an optional base. If no base is -// provided it will use the current working directory. -PosixErrorOr<std::string> MakeAbsolute(absl::string_view filename, - absl::string_view base); - -// Generates a relative path from the source directory to the destination -// (dest) file or directory. This uses ../ when necessary for destinations -// which are not nested within the source. Both source and dest are required -// to be absolute paths, and an empty string will be returned if they are not. -PosixErrorOr<std::string> GetRelativePath(absl::string_view source, - absl::string_view dest); - -// Returns the part of the path before the final "/", EXCEPT: -// * If there is a single leading "/" in the path, the result will be the -// leading "/". -// * If there is no "/" in the path, the result is the empty prefix of the -// input string. -absl::string_view Dirname(absl::string_view path); - -// Return the parts of the path, split on the final "/". If there is no -// "/" in the path, the first part of the output is empty and the second -// is the input. If the only "/" in the path is the first character, it is -// the first part of the output. -std::pair<absl::string_view, absl::string_view> SplitPath( - absl::string_view path); - -// Returns the part of the path after the final "/". If there is no -// "/" in the path, the result is the same as the input. -// Note that this function's behavior differs from the Unix basename -// command if path ends with "/". For such paths, this function returns the -// empty string. -absl::string_view Basename(absl::string_view path); - -// Collapse duplicate "/"s, resolve ".." and "." path elements, remove -// trailing "/". -// -// NOTE: This respects relative vs. absolute paths, but does not -// invoke any system calls (getcwd(2)) in order to resolve relative -// paths wrt actual working directory. That is, this is purely a -// string manipulation, completely independent of process state. -std::string CleanPath(absl::string_view path); - -// Returns the full path to the executable of the given pid or a PosixError. -PosixErrorOr<std::string> ProcessExePath(int pid); - -namespace internal { -// Not part of the public API. -std::string JoinPathImpl(std::initializer_list<absl::string_view> paths); -} // namespace internal - -// Join multiple paths together. -// All paths will be treated as relative paths, regardless of whether or not -// they start with a leading '/'. That is, all paths will be concatenated -// together, with the appropriate path separator inserted in between. -// Arguments must be convertible to absl::string_view. -// -// Usage: -// std::string path = JoinPath("/foo", dirname, filename); -// std::string path = JoinPath(FLAGS_test_srcdir, filename); -// -// 0, 1, 2-path specializations exist to optimize common cases. -inline std::string JoinPath() { return std::string(); } -inline std::string JoinPath(absl::string_view path) { - return std::string(path.data(), path.size()); -} - -std::string JoinPath(absl::string_view path1, absl::string_view path2); -template <typename... T> -inline std::string JoinPath(absl::string_view path1, absl::string_view path2, - absl::string_view path3, const T&... args) { - return internal::JoinPathImpl({path1, path2, path3, args...}); -} -} // namespace testing -} // namespace gvisor -#endif // GVISOR_TEST_UTIL_FS_UTIL_H_ diff --git a/test/util/fs_util_test.cc b/test/util/fs_util_test.cc deleted file mode 100644 index 657b6a46e..000000000 --- a/test/util/fs_util_test.cc +++ /dev/null @@ -1,105 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/util/fs_util.h" - -#include <errno.h> - -#include <vector> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "test/util/posix_error.h" -#include "test/util/temp_path.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -TEST(FsUtilTest, RecursivelyCreateDirManualDelete) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const std::string base_path = - JoinPath(root.path(), "/a/b/c/d/e/f/g/h/i/j/k/l/m"); - - ASSERT_THAT(Exists(base_path), IsPosixErrorOkAndHolds(false)); - ASSERT_NO_ERRNO(RecursivelyCreateDir(base_path)); - - // Delete everything until we hit root and then stop, we want to try this - // without using RecursivelyDelete. - std::string cur_path = base_path; - while (cur_path != root.path()) { - ASSERT_THAT(Exists(cur_path), IsPosixErrorOkAndHolds(true)); - ASSERT_NO_ERRNO(Rmdir(cur_path)); - ASSERT_THAT(Exists(cur_path), IsPosixErrorOkAndHolds(false)); - auto dir = Dirname(cur_path); - cur_path = std::string(dir); - } -} - -TEST(FsUtilTest, RecursivelyCreateAndDeleteDir) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const std::string base_path = - JoinPath(root.path(), "/a/b/c/d/e/f/g/h/i/j/k/l/m"); - - ASSERT_THAT(Exists(base_path), IsPosixErrorOkAndHolds(false)); - ASSERT_NO_ERRNO(RecursivelyCreateDir(base_path)); - - const std::string sub_path = JoinPath(root.path(), "a"); - ASSERT_NO_ERRNO(RecursivelyDelete(sub_path, nullptr, nullptr)); - ASSERT_THAT(Exists(sub_path), IsPosixErrorOkAndHolds(false)); -} - -TEST(FsUtilTest, RecursivelyCreateAndDeletePartial) { - const TempPath root = ASSERT_NO_ERRNO_AND_VALUE(TempPath::CreateDir()); - const std::string base_path = - JoinPath(root.path(), "/a/b/c/d/e/f/g/h/i/j/k/l/m"); - - ASSERT_THAT(Exists(base_path), IsPosixErrorOkAndHolds(false)); - ASSERT_NO_ERRNO(RecursivelyCreateDir(base_path)); - - const std::string a = JoinPath(root.path(), "a"); - auto listing = ASSERT_NO_ERRNO_AND_VALUE(ListDir(a, true)); - ASSERT_THAT(listing, ::testing::Contains("b")); - ASSERT_EQ(listing.size(), 1); - - listing = ASSERT_NO_ERRNO_AND_VALUE(ListDir(a, false)); - ASSERT_THAT(listing, ::testing::Contains(".")); - ASSERT_THAT(listing, ::testing::Contains("..")); - ASSERT_THAT(listing, ::testing::Contains("b")); - ASSERT_EQ(listing.size(), 3); - - const std::string sub_path = JoinPath(root.path(), "/a/b/c/d/e/f"); - - ASSERT_NO_ERRNO( - CreateWithContents(JoinPath(Dirname(sub_path), "file"), "Hello World")); - std::string contents = ""; - ASSERT_NO_ERRNO(GetContents(JoinPath(Dirname(sub_path), "file"), &contents)); - ASSERT_EQ(contents, "Hello World"); - - ASSERT_NO_ERRNO(RecursivelyDelete(sub_path, nullptr, nullptr)); - ASSERT_THAT(Exists(sub_path), IsPosixErrorOkAndHolds(false)); - - // The parent of the subpath (directory e) should still exist. - ASSERT_THAT(Exists(Dirname(sub_path)), IsPosixErrorOkAndHolds(true)); - - // The file we created along side f should also still exist. - ASSERT_THAT(Exists(JoinPath(Dirname(sub_path), "file")), - IsPosixErrorOkAndHolds(true)); -} -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/util/logging.cc b/test/util/logging.cc deleted file mode 100644 index 5d5e76c46..000000000 --- a/test/util/logging.cc +++ /dev/null @@ -1,97 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/util/logging.h" - -#include <errno.h> -#include <stdint.h> -#include <stdlib.h> -#include <unistd.h> - -namespace gvisor { -namespace testing { - -namespace { - -// We implement this here instead of using test_util to avoid cyclic -// dependencies. -int Write(int fd, const char* buf, size_t size) { - size_t written = 0; - while (written < size) { - int res = write(fd, buf + written, size - written); - if (res < 0 && errno == EINTR) { - continue; - } else if (res <= 0) { - break; - } - - written += res; - } - return static_cast<int>(written); -} - -// Write 32-bit decimal number to fd. -int WriteNumber(int fd, uint32_t val) { - constexpr char kDigits[] = "0123456789"; - constexpr int kBase = 10; - - // 10 chars for 32-bit number in decimal, 1 char for the NUL-terminator. - constexpr int kBufferSize = 11; - char buf[kBufferSize]; - - // Convert the number to string. - char* s = buf + sizeof(buf) - 1; - size_t size = 0; - - *s = '\0'; - do { - s--; - size++; - - *s = kDigits[val % kBase]; - val /= kBase; - } while (val); - - return Write(fd, s, size); -} - -} // namespace - -void CheckFailure(const char* cond, size_t cond_size, const char* msg, - size_t msg_size, bool include_errno) { - int saved_errno = errno; - - constexpr char kCheckFailure[] = "Check failed: "; - Write(2, kCheckFailure, sizeof(kCheckFailure) - 1); - Write(2, cond, cond_size); - - if (msg != nullptr) { - Write(2, ": ", 2); - Write(2, msg, msg_size); - } - - if (include_errno) { - constexpr char kErrnoMessage[] = " (errno "; - Write(2, kErrnoMessage, sizeof(kErrnoMessage) - 1); - WriteNumber(2, saved_errno); - Write(2, ")", 1); - } - - Write(2, "\n", 1); - - abort(); -} - -} // namespace testing -} // namespace gvisor diff --git a/test/util/logging.h b/test/util/logging.h deleted file mode 100644 index 589166fab..000000000 --- a/test/util/logging.h +++ /dev/null @@ -1,73 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_UTIL_LOGGING_H_ -#define GVISOR_TEST_UTIL_LOGGING_H_ - -#include <stddef.h> - -namespace gvisor { -namespace testing { - -void CheckFailure(const char* cond, size_t cond_size, const char* msg, - size_t msg_size, bool include_errno); - -// If cond is false, aborts the current process. -// -// This macro is async-signal-safe. -#define TEST_CHECK(cond) \ - do { \ - if (!(cond)) { \ - ::gvisor::testing::CheckFailure(#cond, sizeof(#cond) - 1, nullptr, \ - 0, false); \ - } \ - } while (0) - -// If cond is false, logs msg then aborts the current process. -// -// This macro is async-signal-safe. -#define TEST_CHECK_MSG(cond, msg) \ - do { \ - if (!(cond)) { \ - ::gvisor::testing::CheckFailure(#cond, sizeof(#cond) - 1, msg, \ - sizeof(msg) - 1, false); \ - } \ - } while (0) - -// If cond is false, logs errno, then aborts the current process. -// -// This macro is async-signal-safe. -#define TEST_PCHECK(cond) \ - do { \ - if (!(cond)) { \ - ::gvisor::testing::CheckFailure(#cond, sizeof(#cond) - 1, nullptr, \ - 0, true); \ - } \ - } while (0) - -// If cond is false, logs msg and errno, then aborts the current process. -// -// This macro is async-signal-safe. -#define TEST_PCHECK_MSG(cond, msg) \ - do { \ - if (!(cond)) { \ - ::gvisor::testing::CheckFailure(#cond, sizeof(#cond) - 1, msg, \ - sizeof(msg) - 1, true); \ - } \ - } while (0) - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_UTIL_LOGGING_H_ diff --git a/test/util/memory_util.h b/test/util/memory_util.h deleted file mode 100644 index e189b73e8..000000000 --- a/test/util/memory_util.h +++ /dev/null @@ -1,147 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_UTIL_MEMORY_UTIL_H_ -#define GVISOR_TEST_UTIL_MEMORY_UTIL_H_ - -#include <errno.h> -#include <stddef.h> -#include <stdint.h> -#include <sys/mman.h> - -#include "absl/strings/str_format.h" -#include "absl/strings/string_view.h" -#include "test/util/logging.h" -#include "test/util/posix_error.h" -#include "test/util/save_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -// RAII type for mmap'ed memory. Only usable in tests due to use of a test-only -// macro that can't be named without invoking the presubmit's wrath. -class Mapping { - public: - // Constructs a mapping that owns nothing. - Mapping() = default; - - // Constructs a mapping that owns the mmapped memory [ptr, ptr+len). Most - // users should use Mmap or MmapAnon instead. - Mapping(void* ptr, size_t len) : ptr_(ptr), len_(len) {} - - Mapping(Mapping&& orig) : ptr_(orig.ptr_), len_(orig.len_) { orig.release(); } - - Mapping& operator=(Mapping&& orig) { - ptr_ = orig.ptr_; - len_ = orig.len_; - orig.release(); - return *this; - } - - Mapping(Mapping const&) = delete; - Mapping& operator=(Mapping const&) = delete; - - ~Mapping() { reset(); } - - void* ptr() const { return ptr_; } - size_t len() const { return len_; } - - // Returns a pointer to the end of the mapping. Useful for when the mapping - // is used as a thread stack. - void* endptr() const { return reinterpret_cast<void*>(addr() + len_); } - - // Returns the start of this mapping cast to uintptr_t for ease of pointer - // arithmetic. - uintptr_t addr() const { return reinterpret_cast<uintptr_t>(ptr_); } - - // Returns the end of this mapping cast to uintptr_t for ease of pointer - // arithmetic. - uintptr_t endaddr() const { return reinterpret_cast<uintptr_t>(endptr()); } - - // Returns this mapping as a StringPiece for ease of comparison. - // - // This function is named view in anticipation of the eventual replacement of - // StringPiece with std::string_view. - absl::string_view view() const { - return absl::string_view(static_cast<char const*>(ptr_), len_); - } - - // These are both named reset for consistency with standard smart pointers. - - void reset(void* ptr, size_t len) { - if (len_) { - TEST_PCHECK(munmap(ptr_, len_) == 0); - } - ptr_ = ptr; - len_ = len; - } - - void reset() { reset(nullptr, 0); } - - void release() { - ptr_ = nullptr; - len_ = 0; - } - - private: - void* ptr_ = nullptr; - size_t len_ = 0; -}; - -// Wrapper around mmap(2) that returns a Mapping. -inline PosixErrorOr<Mapping> Mmap(void* addr, size_t length, int prot, - int flags, int fd, off_t offset) { - void* ptr = mmap(addr, length, prot, flags, fd, offset); - if (ptr == MAP_FAILED) { - return PosixError( - errno, absl::StrFormat("mmap(%p, %d, %x, %x, %d, %d)", addr, length, - prot, flags, fd, offset)); - } - MaybeSave(); - return Mapping(ptr, length); -} - -// Convenience wrapper around Mmap for anonymous mappings. -inline PosixErrorOr<Mapping> MmapAnon(size_t length, int prot, int flags) { - return Mmap(nullptr, length, prot, flags | MAP_ANONYMOUS, -1, 0); -} - -// Wrapper for mremap that returns a PosixErrorOr<>, since the return type of -// void* isn't directly compatible with SyscallSucceeds. -inline PosixErrorOr<void*> Mremap(void* old_address, size_t old_size, - size_t new_size, int flags, - void* new_address) { - void* rv = mremap(old_address, old_size, new_size, flags, new_address); - if (rv == MAP_FAILED) { - return PosixError(errno, "mremap failed"); - } - return rv; -} - -// Returns true if the page containing addr is mapped. -inline bool IsMapped(uintptr_t addr) { - int const rv = msync(reinterpret_cast<void*>(addr & ~(kPageSize - 1)), - kPageSize, MS_ASYNC); - if (rv == 0) { - return true; - } - TEST_PCHECK_MSG(errno == ENOMEM, "msync failed with unexpected errno"); - return false; -} - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_UTIL_MEMORY_UTIL_H_ diff --git a/test/util/mount_util.h b/test/util/mount_util.h deleted file mode 100644 index 09e2281eb..000000000 --- a/test/util/mount_util.h +++ /dev/null @@ -1,51 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_UTIL_MOUNT_UTIL_H_ -#define GVISOR_TEST_UTIL_MOUNT_UTIL_H_ - -#include <errno.h> -#include <sys/mount.h> - -#include <functional> -#include <string> - -#include "gmock/gmock.h" -#include "test/util/cleanup.h" -#include "test/util/posix_error.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -// Mount mounts the filesystem, and unmounts when the returned reference is -// destroyed. -inline PosixErrorOr<Cleanup> Mount(const std::string& source, - const std::string& target, - const std::string& fstype, - uint64_t mountflags, const std::string& data, - uint64_t umountflags) { - if (mount(source.c_str(), target.c_str(), fstype.c_str(), mountflags, - data.c_str()) == -1) { - return PosixError(errno, "mount failed"); - } - return Cleanup([target, umountflags]() { - EXPECT_THAT(umount2(target.c_str(), umountflags), SyscallSucceeds()); - }); -} - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_UTIL_MOUNT_UTIL_H_ diff --git a/test/util/multiprocess_util.cc b/test/util/multiprocess_util.cc deleted file mode 100644 index 8b676751b..000000000 --- a/test/util/multiprocess_util.cc +++ /dev/null @@ -1,173 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/util/multiprocess_util.h" - -#include <asm/unistd.h> -#include <errno.h> -#include <fcntl.h> -#include <signal.h> -#include <sys/prctl.h> -#include <unistd.h> - -#include "absl/strings/str_cat.h" -#include "test/util/cleanup.h" -#include "test/util/file_descriptor.h" -#include "test/util/posix_error.h" -#include "test/util/save_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -// exec_fn wraps a variant of the exec family, e.g. execve or execveat. -PosixErrorOr<Cleanup> ForkAndExecHelper(const std::function<void()>& exec_fn, - const std::function<void()>& fn, - pid_t* child, int* execve_errno) { - int pfds[2]; - int ret = pipe2(pfds, O_CLOEXEC); - if (ret < 0) { - return PosixError(errno, "pipe failed"); - } - FileDescriptor rfd(pfds[0]); - FileDescriptor wfd(pfds[1]); - - int parent_stdout = dup(STDOUT_FILENO); - if (parent_stdout < 0) { - return PosixError(errno, "dup stdout"); - } - int parent_stderr = dup(STDERR_FILENO); - if (parent_stdout < 0) { - return PosixError(errno, "dup stderr"); - } - - pid_t pid = fork(); - if (pid < 0) { - return PosixError(errno, "fork failed"); - } else if (pid == 0) { - // Child. - rfd.reset(); - if (dup2(parent_stdout, STDOUT_FILENO) < 0) { - _exit(3); - } - if (dup2(parent_stderr, STDERR_FILENO) < 0) { - _exit(4); - } - close(parent_stdout); - close(parent_stderr); - - // Clean ourself up in case the parent doesn't. - if (prctl(PR_SET_PDEATHSIG, SIGKILL)) { - _exit(3); - } - - if (fn) { - fn(); - } - - // Call variant of exec function. - exec_fn(); - - int error = errno; - if (WriteFd(pfds[1], &error, sizeof(error)) != sizeof(error)) { - // We can't do much if the write fails, but we can at least exit with a - // different code. - _exit(2); - } - _exit(1); - } - - // Parent. - if (child) { - *child = pid; - } - - auto cleanup = Cleanup([pid] { - kill(pid, SIGKILL); - RetryEINTR(waitpid)(pid, nullptr, 0); - }); - - wfd.reset(); - - int read_errno; - ret = ReadFd(rfd.get(), &read_errno, sizeof(read_errno)); - if (ret == 0) { - // Other end of the pipe closed, execve must have succeeded. - read_errno = 0; - } else if (ret < 0) { - return PosixError(errno, "read pipe failed"); - } else if (ret != sizeof(read_errno)) { - return PosixError(EPIPE, absl::StrCat("pipe read wrong size ", ret)); - } - - if (execve_errno) { - *execve_errno = read_errno; - } - - return std::move(cleanup); -} - -} // namespace - -PosixErrorOr<Cleanup> ForkAndExec(const std::string& filename, - const ExecveArray& argv, - const ExecveArray& envv, - const std::function<void()>& fn, pid_t* child, - int* execve_errno) { - char* const* argv_data = argv.get(); - char* const* envv_data = envv.get(); - const std::function<void()> exec_fn = [=] { - execve(filename.c_str(), argv_data, envv_data); - }; - return ForkAndExecHelper(exec_fn, fn, child, execve_errno); -} - -PosixErrorOr<Cleanup> ForkAndExecveat(const int32_t dirfd, - const std::string& pathname, - const ExecveArray& argv, - const ExecveArray& envv, const int flags, - const std::function<void()>& fn, - pid_t* child, int* execve_errno) { - char* const* argv_data = argv.get(); - char* const* envv_data = envv.get(); - const std::function<void()> exec_fn = [=] { - syscall(__NR_execveat, dirfd, pathname.c_str(), argv_data, envv_data, - flags); - }; - return ForkAndExecHelper(exec_fn, fn, child, execve_errno); -} - -PosixErrorOr<int> InForkedProcess(const std::function<void()>& fn) { - pid_t pid = fork(); - if (pid == 0) { - fn(); - _exit(0); - } - MaybeSave(); - if (pid < 0) { - return PosixError(errno, "fork failed"); - } - - int status; - if (waitpid(pid, &status, 0) < 0) { - return PosixError(errno, "waitpid failed"); - } - - return status; -} - -} // namespace testing -} // namespace gvisor diff --git a/test/util/multiprocess_util.h b/test/util/multiprocess_util.h deleted file mode 100644 index 2f3bf4a6f..000000000 --- a/test/util/multiprocess_util.h +++ /dev/null @@ -1,132 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_UTIL_MULTIPROCESS_UTIL_H_ -#define GVISOR_TEST_UTIL_MULTIPROCESS_UTIL_H_ - -#include <unistd.h> - -#include <algorithm> -#include <string> -#include <utility> -#include <vector> - -#include "absl/strings/string_view.h" -#include "test/util/cleanup.h" -#include "test/util/posix_error.h" - -namespace gvisor { -namespace testing { - -// Immutable holder for a dynamically-sized array of pointers to mutable char, -// terminated by a null pointer, as required for the argv and envp arguments to -// execve(2). -class ExecveArray { - public: - // Constructs an empty ExecveArray. - ExecveArray() = default; - - // Constructs an ExecveArray by copying strings from the given range. T must - // be a range over ranges of char. - template <typename T> - explicit ExecveArray(T const& strs) : ExecveArray(strs.begin(), strs.end()) {} - - // Constructs an ExecveArray by copying strings from [first, last). InputIt - // must be an input iterator over a range over char. - template <typename InputIt> - ExecveArray(InputIt first, InputIt last) { - std::vector<size_t> offsets; - auto output_it = std::back_inserter(str_); - for (InputIt it = first; it != last; ++it) { - offsets.push_back(str_.size()); - auto const& s = *it; - std::copy(s.begin(), s.end(), output_it); - str_.push_back('\0'); - } - ptrs_.reserve(offsets.size() + 1); - for (auto offset : offsets) { - ptrs_.push_back(str_.data() + offset); - } - ptrs_.push_back(nullptr); - } - - // Constructs an ExecveArray by copying strings from list. This overload must - // exist independently of the single-argument template constructor because - // std::initializer_list does not participate in template argument deduction - // (i.e. cannot be type-inferred in an invocation of the templated - // constructor). - /* implicit */ ExecveArray(std::initializer_list<absl::string_view> list) - : ExecveArray(list.begin(), list.end()) {} - - // Disable move construction and assignment since ptrs_ points into str_. - ExecveArray(ExecveArray&&) = delete; - ExecveArray& operator=(ExecveArray&&) = delete; - - char* const* get() const { return ptrs_.data(); } - size_t get_size() { return str_.size(); } - - private: - std::vector<char> str_; - std::vector<char*> ptrs_; -}; - -// Simplified version of SubProcess. Returns OK and a cleanup function to kill -// the child if it made it to execve. -// -// fn is run between fork and exec. If it needs to fail, it should exit the -// process. -// -// The child pid is returned via child, if provided. -// execve's error code is returned via execve_errno, if provided. -PosixErrorOr<Cleanup> ForkAndExec(const std::string& filename, - const ExecveArray& argv, - const ExecveArray& envv, - const std::function<void()>& fn, pid_t* child, - int* execve_errno); - -inline PosixErrorOr<Cleanup> ForkAndExec(const std::string& filename, - const ExecveArray& argv, - const ExecveArray& envv, pid_t* child, - int* execve_errno) { - return ForkAndExec( - filename, argv, envv, [] {}, child, execve_errno); -} - -// Equivalent to ForkAndExec, except using dirfd and flags with execveat. -PosixErrorOr<Cleanup> ForkAndExecveat(int32_t dirfd, - const std::string& pathname, - const ExecveArray& argv, - const ExecveArray& envv, int flags, - const std::function<void()>& fn, - pid_t* child, int* execve_errno); - -inline PosixErrorOr<Cleanup> ForkAndExecveat(int32_t dirfd, - const std::string& pathname, - const ExecveArray& argv, - const ExecveArray& envv, int flags, - pid_t* child, int* execve_errno) { - return ForkAndExecveat( - dirfd, pathname, argv, envv, flags, [] {}, child, execve_errno); -} - -// Calls fn in a forked subprocess and returns the exit status of the -// subprocess. -// -// fn must be async-signal-safe. -PosixErrorOr<int> InForkedProcess(const std::function<void()>& fn); - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_UTIL_MULTIPROCESS_UTIL_H_ diff --git a/test/util/platform_util.cc b/test/util/platform_util.cc deleted file mode 100644 index c9200d381..000000000 --- a/test/util/platform_util.cc +++ /dev/null @@ -1,48 +0,0 @@ -// Copyright 2020 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/util/platform_util.h" - -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -PlatformSupport PlatformSupport32Bit() { - if (GvisorPlatform() == Platform::kPtrace || - GvisorPlatform() == Platform::kKVM) { - return PlatformSupport::NotSupported; - } else { - return PlatformSupport::Allowed; - } -} - -PlatformSupport PlatformSupportAlignmentCheck() { - return PlatformSupport::Allowed; -} - -PlatformSupport PlatformSupportMultiProcess() { - return PlatformSupport::Allowed; -} - -PlatformSupport PlatformSupportInt3() { - if (GvisorPlatform() == Platform::kKVM) { - return PlatformSupport::NotSupported; - } else { - return PlatformSupport::Allowed; - } -} - -} // namespace testing -} // namespace gvisor diff --git a/test/util/platform_util.h b/test/util/platform_util.h deleted file mode 100644 index 28cc92371..000000000 --- a/test/util/platform_util.h +++ /dev/null @@ -1,56 +0,0 @@ -// Copyright 2020 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_UTIL_PLATFORM_UTIL_H_ -#define GVISOR_TEST_UTIL_PLATFORM_UTIL_H_ - -namespace gvisor { -namespace testing { - -// PlatformSupport is a generic enumeration of classes of support. -// -// It is up to the individual functions and callers to agree on the precise -// definition for each case. The document here generally refers to 32-bit -// as an example. Many cases will use only NotSupported and Allowed. -enum class PlatformSupport { - // The feature is not supported on the current platform. - // - // In the case of 32-bit, this means that calls will generally be interpreted - // as 64-bit calls, and there is no support for 32-bit binaries, long calls, - // etc. This usually means that the underlying implementation just pretends - // that 32-bit doesn't exist. - NotSupported, - - // Calls will be ignored by the kernel with a fixed error. - Ignored, - - // Calls will result in a SIGSEGV or similar fault. - Segfault, - - // The feature is supported as expected. - // - // In the case of 32-bit, this means that the system call or far call will be - // handled properly. - Allowed, -}; - -PlatformSupport PlatformSupport32Bit(); -PlatformSupport PlatformSupportAlignmentCheck(); -PlatformSupport PlatformSupportMultiProcess(); -PlatformSupport PlatformSupportInt3(); - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_UTIL_PLATFORM_UTL_H_ diff --git a/test/util/posix_error.cc b/test/util/posix_error.cc deleted file mode 100644 index cebf7e0ac..000000000 --- a/test/util/posix_error.cc +++ /dev/null @@ -1,98 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/util/posix_error.h" - -#include <cassert> -#include <cerrno> -#include <cstring> -#include <string> - -#include "absl/strings/str_cat.h" - -namespace gvisor { -namespace testing { - -std::string PosixError::ToString() const { - if (ok()) { - return "No Error"; - } - - std::string ret; - - char strerrno_buf[1024] = {}; - - auto res = strerror_r(errno_, strerrno_buf, sizeof(strerrno_buf)); - -// The GNU version of strerror_r always returns a non-null char* pointing to a -// buffer containing the stringified errno; the XSI version returns a positive -// errno which indicates the result of writing the stringified errno into the -// supplied buffer. The gymnastics below are needed to support both. -#ifndef _GNU_SOURCE - if (res != 0) { - ret = absl::StrCat("PosixError(errno=", errno_, " strerror_r FAILED(", ret, - "))"); - } else { - ret = absl::StrCat("PosixError(errno=", errno_, " ", strerrno_buf, ")"); - } -#else - ret = absl::StrCat("PosixError(errno=", errno_, " ", res, ")"); -#endif - - if (!msg_.empty()) { - ret.append(" "); - ret.append(msg_); - } - - return ret; -} - -::std::ostream& operator<<(::std::ostream& os, const PosixError& e) { - os << e.ToString(); - return os; -} - -void PosixErrorIsMatcherCommonImpl::DescribeTo(std::ostream* os) const { - *os << "has an errno value that "; - code_matcher_.DescribeTo(os); - *os << ", and has an error message that "; - message_matcher_.DescribeTo(os); -} - -void PosixErrorIsMatcherCommonImpl::DescribeNegationTo(std::ostream* os) const { - *os << "has an errno value that "; - code_matcher_.DescribeNegationTo(os); - *os << ", or has an error message that "; - message_matcher_.DescribeNegationTo(os); -} - -bool PosixErrorIsMatcherCommonImpl::MatchAndExplain( - const PosixError& error, - ::testing::MatchResultListener* result_listener) const { - ::testing::StringMatchResultListener inner_listener; - - inner_listener.Clear(); - if (!code_matcher_.MatchAndExplain(error.errno_value(), &inner_listener)) { - return false; - } - - if (!message_matcher_.Matches(error.error_message())) { - return false; - } - - return true; -} - -} // namespace testing -} // namespace gvisor diff --git a/test/util/posix_error.h b/test/util/posix_error.h deleted file mode 100644 index ad666bce0..000000000 --- a/test/util/posix_error.h +++ /dev/null @@ -1,462 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_UTIL_POSIX_ERROR_H_ -#define GVISOR_TEST_UTIL_POSIX_ERROR_H_ - -#include <string> - -#include "gmock/gmock.h" -#include "absl/base/attributes.h" -#include "absl/strings/string_view.h" -#include "absl/types/variant.h" -#include "test/util/logging.h" - -namespace gvisor { -namespace testing { - -class PosixErrorIsMatcherCommonImpl; - -template <typename T> -class PosixErrorOr; - -class ABSL_MUST_USE_RESULT PosixError { - public: - PosixError() {} - explicit PosixError(int errno_value) : errno_(errno_value) {} - PosixError(int errno_value, std::string msg) - : errno_(errno_value), msg_(std::move(msg)) {} - - PosixError(PosixError&& other) = default; - PosixError& operator=(PosixError&& other) = default; - PosixError(const PosixError&) = default; - PosixError& operator=(const PosixError&) = default; - - bool ok() const { return errno_ == 0; } - - // Returns a reference to *this to make matchers compatible with - // PosixErrorOr. - const PosixError& error() const { return *this; } - - std::string error_message() const { return msg_; } - - // ToString produces a full string representation of this posix error - // including the printable representation of the errno and the error message. - std::string ToString() const; - - // Ignores any errors. This method does nothing except potentially suppress - // complaints from any tools that are checking that errors are not dropped on - // the floor. - void IgnoreError() const {} - - private: - int errno_value() const { return errno_; } - int errno_ = 0; - std::string msg_; - - friend class PosixErrorIsMatcherCommonImpl; - - template <typename T> - friend class PosixErrorOr; -}; - -template <typename T> -class ABSL_MUST_USE_RESULT PosixErrorOr { - public: - // A PosixErrorOr will check fail if it is constructed with NoError(). - PosixErrorOr(const PosixError& error); - PosixErrorOr(const T& value); - PosixErrorOr(T&& value); - - PosixErrorOr(PosixErrorOr&& other) = default; - PosixErrorOr& operator=(PosixErrorOr&& other) = default; - PosixErrorOr(const PosixErrorOr&) = default; - PosixErrorOr& operator=(const PosixErrorOr&) = default; - - // Conversion copy/move constructor, T must be convertible from U. - template <typename U> - friend class PosixErrorOr; - - template <typename U> - PosixErrorOr(PosixErrorOr<U> other); - - template <typename U> - PosixErrorOr& operator=(PosixErrorOr<U> other); - - // Return a reference to the error or NoError(). - PosixError error() const; - - // Returns this->error().error_message(); - std::string error_message() const; - - // Returns true if this PosixErrorOr contains some T. - bool ok() const; - - // Returns a reference to our current value, or CHECK-fails if !this->ok(). - const T& ValueOrDie() const&; - T& ValueOrDie() &; - const T&& ValueOrDie() const&&; - T&& ValueOrDie() &&; - - // Ignores any errors. This method does nothing except potentially suppress - // complaints from any tools that are checking that errors are not dropped on - // the floor. - void IgnoreError() const {} - - private: - int errno_value() const; - absl::variant<T, PosixError> value_; - - friend class PosixErrorIsMatcherCommonImpl; -}; - -template <typename T> -PosixErrorOr<T>::PosixErrorOr(const PosixError& error) : value_(error) { - TEST_CHECK_MSG( - !error.ok(), - "Constructing PosixErrorOr with NoError, eg. errno 0 is not allowed."); -} - -template <typename T> -PosixErrorOr<T>::PosixErrorOr(const T& value) : value_(value) {} - -template <typename T> -PosixErrorOr<T>::PosixErrorOr(T&& value) : value_(std::move(value)) {} - -// Conversion copy/move constructor, T must be convertible from U. -template <typename T> -template <typename U> -inline PosixErrorOr<T>::PosixErrorOr(PosixErrorOr<U> other) { - if (absl::holds_alternative<U>(other.value_)) { - // T is convertible from U. - value_ = absl::get<U>(std::move(other.value_)); - } else if (absl::holds_alternative<PosixError>(other.value_)) { - value_ = absl::get<PosixError>(std::move(other.value_)); - } else { - TEST_CHECK_MSG(false, "PosixErrorOr does not contain PosixError or value"); - } -} - -template <typename T> -template <typename U> -inline PosixErrorOr<T>& PosixErrorOr<T>::operator=(PosixErrorOr<U> other) { - if (absl::holds_alternative<U>(other.value_)) { - // T is convertible from U. - value_ = absl::get<U>(std::move(other.value_)); - } else if (absl::holds_alternative<PosixError>(other.value_)) { - value_ = absl::get<PosixError>(std::move(other.value_)); - } else { - TEST_CHECK_MSG(false, "PosixErrorOr does not contain PosixError or value"); - } - return *this; -} - -template <typename T> -PosixError PosixErrorOr<T>::error() const { - if (!absl::holds_alternative<PosixError>(value_)) { - return PosixError(); - } - return absl::get<PosixError>(value_); -} - -template <typename T> -int PosixErrorOr<T>::errno_value() const { - return error().errno_value(); -} - -template <typename T> -std::string PosixErrorOr<T>::error_message() const { - return error().error_message(); -} - -template <typename T> -bool PosixErrorOr<T>::ok() const { - return absl::holds_alternative<T>(value_); -} - -template <typename T> -const T& PosixErrorOr<T>::ValueOrDie() const& { - TEST_CHECK(absl::holds_alternative<T>(value_)); - return absl::get<T>(value_); -} - -template <typename T> -T& PosixErrorOr<T>::ValueOrDie() & { - TEST_CHECK(absl::holds_alternative<T>(value_)); - return absl::get<T>(value_); -} - -template <typename T> -const T&& PosixErrorOr<T>::ValueOrDie() const&& { - TEST_CHECK(absl::holds_alternative<T>(value_)); - return std::move(absl::get<T>(value_)); -} - -template <typename T> -T&& PosixErrorOr<T>::ValueOrDie() && { - TEST_CHECK(absl::holds_alternative<T>(value_)); - return std::move(absl::get<T>(value_)); -} - -extern ::std::ostream& operator<<(::std::ostream& os, const PosixError& e); - -template <typename T> -::std::ostream& operator<<(::std::ostream& os, const PosixErrorOr<T>& e) { - os << e.error(); - return os; -} - -// NoError is a PosixError that represents a successful state, i.e. No Error. -inline PosixError NoError() { return PosixError(); } - -// Monomorphic implementation of matcher IsPosixErrorOk() for a given type T. -// T can be PosixError, PosixErrorOr<>, or a reference to either of them. -template <typename T> -class MonoPosixErrorIsOkMatcherImpl : public ::testing::MatcherInterface<T> { - public: - void DescribeTo(std::ostream* os) const override { *os << "is OK"; } - void DescribeNegationTo(std::ostream* os) const override { - *os << "is not OK"; - } - bool MatchAndExplain(T actual_value, - ::testing::MatchResultListener*) const override { - return actual_value.ok(); - } -}; - -// Implements IsPosixErrorOkMatcher() as a polymorphic matcher. -class IsPosixErrorOkMatcher { - public: - template <typename T> - operator ::testing::Matcher<T>() const { // NOLINT - return MakeMatcher(new MonoPosixErrorIsOkMatcherImpl<T>()); - } -}; - -// Monomorphic implementation of a matcher for a PosixErrorOr. -template <typename PosixErrorOrType> -class IsPosixErrorOkAndHoldsMatcherImpl - : public ::testing::MatcherInterface<PosixErrorOrType> { - public: - using ValueType = typename std::remove_reference<decltype( - std::declval<PosixErrorOrType>().ValueOrDie())>::type; - - template <typename InnerMatcher> - explicit IsPosixErrorOkAndHoldsMatcherImpl(InnerMatcher&& inner_matcher) - : inner_matcher_(::testing::SafeMatcherCast<const ValueType&>( - std::forward<InnerMatcher>(inner_matcher))) {} - - void DescribeTo(std::ostream* os) const override { - *os << "is OK and has a value that "; - inner_matcher_.DescribeTo(os); - } - - void DescribeNegationTo(std::ostream* os) const override { - *os << "isn't OK or has a value that "; - inner_matcher_.DescribeNegationTo(os); - } - - bool MatchAndExplain( - PosixErrorOrType actual_value, - ::testing::MatchResultListener* listener) const override { - // We can't extract the value if it doesn't contain one. - if (!actual_value.ok()) { - return false; - } - - ::testing::StringMatchResultListener inner_listener; - const bool matches = inner_matcher_.MatchAndExplain( - actual_value.ValueOrDie(), &inner_listener); - const std::string inner_explanation = inner_listener.str(); - *listener << "has a value " - << ::testing::PrintToString(actual_value.ValueOrDie()); - - if (!inner_explanation.empty()) { - *listener << " " << inner_explanation; - } - return matches; - } - - private: - const ::testing::Matcher<const ValueType&> inner_matcher_; -}; - -// Implements IsOkAndHolds() as a polymorphic matcher. -template <typename InnerMatcher> -class IsPosixErrorOkAndHoldsMatcher { - public: - explicit IsPosixErrorOkAndHoldsMatcher(InnerMatcher inner_matcher) - : inner_matcher_(std::move(inner_matcher)) {} - - // Converts this polymorphic matcher to a monomorphic one of the given type. - // PosixErrorOrType can be either PosixErrorOr<T> or a reference to - // PosixErrorOr<T>. - template <typename PosixErrorOrType> - operator ::testing::Matcher<PosixErrorOrType>() const { // NOLINT - return ::testing::MakeMatcher( - new IsPosixErrorOkAndHoldsMatcherImpl<PosixErrorOrType>( - inner_matcher_)); - } - - private: - const InnerMatcher inner_matcher_; -}; - -// PosixErrorIs() is a polymorphic matcher. This class is the common -// implementation of it shared by all types T where PosixErrorIs() can be -// used as a Matcher<T>. -class PosixErrorIsMatcherCommonImpl { - public: - PosixErrorIsMatcherCommonImpl( - ::testing::Matcher<int> code_matcher, - ::testing::Matcher<const std::string&> message_matcher) - : code_matcher_(std::move(code_matcher)), - message_matcher_(std::move(message_matcher)) {} - - void DescribeTo(std::ostream* os) const; - - void DescribeNegationTo(std::ostream* os) const; - - bool MatchAndExplain(const PosixError& error, - ::testing::MatchResultListener* result_listener) const; - - template <typename T> - bool MatchAndExplain(const PosixErrorOr<T>& error_or, - ::testing::MatchResultListener* result_listener) const { - if (error_or.ok()) { - *result_listener << "has a value " - << ::testing::PrintToString(error_or.ValueOrDie()); - return false; - } - - return MatchAndExplain(error_or.error(), result_listener); - } - - private: - const ::testing::Matcher<int> code_matcher_; - const ::testing::Matcher<const std::string&> message_matcher_; -}; - -// Monomorphic implementation of matcher PosixErrorIs() for a given type -// T. T can be PosixError, PosixErrorOr<>, or a reference to either of them. -template <typename T> -class MonoPosixErrorIsMatcherImpl : public ::testing::MatcherInterface<T> { - public: - explicit MonoPosixErrorIsMatcherImpl( - PosixErrorIsMatcherCommonImpl common_impl) - : common_impl_(std::move(common_impl)) {} - - void DescribeTo(std::ostream* os) const override { - common_impl_.DescribeTo(os); - } - - void DescribeNegationTo(std::ostream* os) const override { - common_impl_.DescribeNegationTo(os); - } - - bool MatchAndExplain( - T actual_value, - ::testing::MatchResultListener* result_listener) const override { - return common_impl_.MatchAndExplain(actual_value, result_listener); - } - - private: - PosixErrorIsMatcherCommonImpl common_impl_; -}; - -inline ::testing::Matcher<int> ToErrorCodeMatcher( - const ::testing::Matcher<int>& m) { - return m; -} - -// Implements PosixErrorIs() as a polymorphic matcher. -class PosixErrorIsMatcher { - public: - template <typename ErrorCodeMatcher> - PosixErrorIsMatcher(ErrorCodeMatcher&& code_matcher, - ::testing::Matcher<const std::string&> message_matcher) - : common_impl_( - ToErrorCodeMatcher(std::forward<ErrorCodeMatcher>(code_matcher)), - std::move(message_matcher)) {} - - // Converts this polymorphic matcher to a monomorphic matcher of the - // given type. T can be StatusOr<>, Status, or a reference to - // either of them. - template <typename T> - operator ::testing::Matcher<T>() const { // NOLINT - return MakeMatcher(new MonoPosixErrorIsMatcherImpl<T>(common_impl_)); - } - - private: - const PosixErrorIsMatcherCommonImpl common_impl_; -}; - -// Returns a gMock matcher that matches a PosixError or PosixErrorOr<> whose -// whose error code matches code_matcher, and whose error message matches -// message_matcher. -template <typename ErrorCodeMatcher> -PosixErrorIsMatcher PosixErrorIs( - ErrorCodeMatcher&& code_matcher, - ::testing::Matcher<const std::string&> message_matcher) { - return PosixErrorIsMatcher(std::forward<ErrorCodeMatcher>(code_matcher), - std::move(message_matcher)); -} - -// Returns a gMock matcher that matches a PosixErrorOr<> which is ok() and -// value matches the inner matcher. -template <typename InnerMatcher> -IsPosixErrorOkAndHoldsMatcher<typename std::decay<InnerMatcher>::type> -IsPosixErrorOkAndHolds(InnerMatcher&& inner_matcher) { - return IsPosixErrorOkAndHoldsMatcher<typename std::decay<InnerMatcher>::type>( - std::forward<InnerMatcher>(inner_matcher)); -} - -// Internal helper for concatenating macro values. -#define POSIX_ERROR_IMPL_CONCAT_INNER_(x, y) x##y -#define POSIX_ERROR_IMPL_CONCAT_(x, y) POSIX_ERROR_IMPL_CONCAT_INNER_(x, y) - -#define POSIX_ERROR_IMPL_ASSIGN_OR_RETURN_(posixerroror, lhs, rexpr) \ - auto posixerroror = (rexpr); \ - if (!posixerroror.ok()) { \ - return (posixerroror.error()); \ - } \ - lhs = std::move(posixerroror).ValueOrDie() - -#define EXPECT_NO_ERRNO(expression) \ - EXPECT_THAT(expression, IsPosixErrorOkMatcher()) -#define ASSERT_NO_ERRNO(expression) \ - ASSERT_THAT(expression, IsPosixErrorOkMatcher()) - -#define ASSIGN_OR_RETURN_ERRNO(lhs, rexpr) \ - POSIX_ERROR_IMPL_ASSIGN_OR_RETURN_( \ - POSIX_ERROR_IMPL_CONCAT_(_status_or_value, __LINE__), lhs, rexpr) - -#define RETURN_IF_ERRNO(s) \ - do { \ - if (!s.ok()) { \ - return s; \ - } \ - } while (false); - -#define ASSERT_NO_ERRNO_AND_VALUE(expr) \ - ({ \ - auto _expr_result = (expr); \ - ASSERT_NO_ERRNO(_expr_result); \ - std::move(_expr_result).ValueOrDie(); \ - }) - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_UTIL_POSIX_ERROR_H_ diff --git a/test/util/posix_error_test.cc b/test/util/posix_error_test.cc deleted file mode 100644 index bf9465abb..000000000 --- a/test/util/posix_error_test.cc +++ /dev/null @@ -1,46 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/util/posix_error.h" - -#include <errno.h> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" - -namespace gvisor { -namespace testing { - -namespace { - -TEST(PosixErrorTest, PosixError) { - auto err = PosixError(EAGAIN); - EXPECT_THAT(err, PosixErrorIs(EAGAIN, "")); -} - -TEST(PosixErrorTest, PosixErrorOrPosixError) { - auto err = PosixErrorOr<std::nullptr_t>(PosixError(EAGAIN)); - EXPECT_THAT(err, PosixErrorIs(EAGAIN, "")); -} - -TEST(PosixErrorTest, PosixErrorOrNullptr) { - auto err = PosixErrorOr<std::nullptr_t>(nullptr); - EXPECT_TRUE(err.ok()); - EXPECT_NO_ERRNO(err); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/util/proc_util.cc b/test/util/proc_util.cc deleted file mode 100644 index 34d636ba9..000000000 --- a/test/util/proc_util.cc +++ /dev/null @@ -1,107 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/util/proc_util.h" - -#include <algorithm> -#include <iostream> -#include <vector> - -#include "absl/strings/ascii.h" -#include "absl/strings/str_cat.h" -#include "absl/strings/str_split.h" -#include "absl/strings/string_view.h" -#include "test/util/fs_util.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -// Parses a single line from /proc/<xxx>/maps. -PosixErrorOr<ProcMapsEntry> ParseProcMapsLine(absl::string_view line) { - ProcMapsEntry map_entry = {}; - - // Limit splitting to 6 parts so that if there is a file path and it contains - // spaces, the file path is not split. - std::vector<std::string> parts = - absl::StrSplit(line, absl::MaxSplits(' ', 5), absl::SkipEmpty()); - - // parts.size() should be 6 if there is a file name specified, and 5 - // otherwise. - if (parts.size() < 5) { - return PosixError(EINVAL, absl::StrCat("Invalid line: ", line)); - } - - // Address range in the form X-X where X are hex values without leading 0x. - std::vector<std::string> addresses = absl::StrSplit(parts[0], '-'); - if (addresses.size() != 2) { - return PosixError(EINVAL, - absl::StrCat("Invalid address range: ", parts[0])); - } - ASSIGN_OR_RETURN_ERRNO(map_entry.start, AtoiBase(addresses[0], 16)); - ASSIGN_OR_RETURN_ERRNO(map_entry.end, AtoiBase(addresses[1], 16)); - - // Permissions are four bytes of the form rwxp or - if permission not set. - if (parts[1].size() != 4) { - return PosixError(EINVAL, - absl::StrCat("Invalid permission field: ", parts[1])); - } - - map_entry.readable = parts[1][0] == 'r'; - map_entry.writable = parts[1][1] == 'w'; - map_entry.executable = parts[1][2] == 'x'; - map_entry.priv = parts[1][3] == 'p'; - - ASSIGN_OR_RETURN_ERRNO(map_entry.offset, AtoiBase(parts[2], 16)); - - std::vector<std::string> device = absl::StrSplit(parts[3], ':'); - if (device.size() != 2) { - return PosixError(EINVAL, absl::StrCat("Invalid device: ", parts[3])); - } - ASSIGN_OR_RETURN_ERRNO(map_entry.major, AtoiBase(device[0], 16)); - ASSIGN_OR_RETURN_ERRNO(map_entry.minor, AtoiBase(device[1], 16)); - - ASSIGN_OR_RETURN_ERRNO(map_entry.inode, Atoi<int64_t>(parts[4])); - if (parts.size() == 6) { - // A filename is present. However, absl::StrSplit retained the whitespace - // between the inode number and the filename. - map_entry.filename = - std::string(absl::StripLeadingAsciiWhitespace(parts[5])); - } - - return map_entry; -} - -PosixErrorOr<std::vector<ProcMapsEntry>> ParseProcMaps( - absl::string_view contents) { - std::vector<ProcMapsEntry> entries; - auto lines = absl::StrSplit(contents, '\n', absl::SkipEmpty()); - for (const auto& l : lines) { - std::cout << "line: " << l << std::endl; - ASSIGN_OR_RETURN_ERRNO(auto entry, ParseProcMapsLine(l)); - entries.push_back(entry); - } - return entries; -} - -PosixErrorOr<bool> IsVsyscallEnabled() { - ASSIGN_OR_RETURN_ERRNO(auto contents, GetContents("/proc/self/maps")); - ASSIGN_OR_RETURN_ERRNO(auto maps, ParseProcMaps(contents)); - return std::any_of(maps.begin(), maps.end(), [](const ProcMapsEntry& e) { - return e.filename == "[vsyscall]"; - }); -} - -} // namespace testing -} // namespace gvisor diff --git a/test/util/proc_util.h b/test/util/proc_util.h deleted file mode 100644 index af209a51e..000000000 --- a/test/util/proc_util.h +++ /dev/null @@ -1,150 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_UTIL_PROC_UTIL_H_ -#define GVISOR_TEST_UTIL_PROC_UTIL_H_ - -#include <ostream> -#include <string> -#include <vector> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "absl/strings/str_cat.h" -#include "absl/strings/string_view.h" -#include "test/util/fs_util.h" -#include "test/util/posix_error.h" - -namespace gvisor { -namespace testing { - -// ProcMapsEntry contains the data from a single line in /proc/<xxx>/maps. -struct ProcMapsEntry { - uint64_t start; - uint64_t end; - bool readable; - bool writable; - bool executable; - bool priv; - uint64_t offset; - int major; - int minor; - int64_t inode; - std::string filename; -}; - -// Parses a ProcMaps line or returns an error. -PosixErrorOr<ProcMapsEntry> ParseProcMapsLine(absl::string_view line); -PosixErrorOr<std::vector<ProcMapsEntry>> ParseProcMaps( - absl::string_view contents); - -// Returns true if vsyscall (emmulation or not) is enabled. -PosixErrorOr<bool> IsVsyscallEnabled(); - -// Printer for ProcMapsEntry. -inline std::ostream& operator<<(std::ostream& os, const ProcMapsEntry& entry) { - std::string str = - absl::StrCat(absl::Hex(entry.start, absl::PadSpec::kZeroPad8), "-", - absl::Hex(entry.end, absl::PadSpec::kZeroPad8), " "); - - absl::StrAppend(&str, entry.readable ? "r" : "-"); - absl::StrAppend(&str, entry.writable ? "w" : "-"); - absl::StrAppend(&str, entry.executable ? "x" : "-"); - absl::StrAppend(&str, entry.priv ? "p" : "s"); - - absl::StrAppend(&str, " ", absl::Hex(entry.offset, absl::PadSpec::kZeroPad8), - " ", absl::Hex(entry.major, absl::PadSpec::kZeroPad2), ":", - absl::Hex(entry.minor, absl::PadSpec::kZeroPad2), " ", - entry.inode); - if (absl::string_view(entry.filename) != "") { - // Pad to column 74 - int pad = 73 - str.length(); - if (pad > 0) { - absl::StrAppend(&str, std::string(pad, ' ')); - } - absl::StrAppend(&str, entry.filename); - } - os << str; - return os; -} - -// Printer for std::vector<ProcMapsEntry>. -inline std::ostream& operator<<(std::ostream& os, - const std::vector<ProcMapsEntry>& vec) { - for (unsigned int i = 0; i < vec.size(); i++) { - os << vec[i]; - if (i != vec.size() - 1) { - os << "\n"; - } - } - return os; -} - -// GMock printer for std::vector<ProcMapsEntry>. -inline void PrintTo(const std::vector<ProcMapsEntry>& vec, std::ostream* os) { - *os << vec; -} - -// Checks that /proc/pid/maps contains all of the passed mappings. -// -// The major, minor, and inode fields are ignored. -MATCHER_P(ContainsMappings, mappings, - "contains mappings:\n" + ::testing::PrintToString(mappings)) { - auto contents_or = GetContents(absl::StrCat("/proc/", arg, "/maps")); - if (!contents_or.ok()) { - *result_listener << "Unable to read mappings: " - << contents_or.error().ToString(); - return false; - } - - auto maps_or = ParseProcMaps(contents_or.ValueOrDie()); - if (!maps_or.ok()) { - *result_listener << "Unable to parse mappings: " - << maps_or.error().ToString(); - return false; - } - - auto maps = std::move(maps_or).ValueOrDie(); - - // Does maps contain all elements in mappings? The comparator ignores - // the major, minor, and inode fields. - bool all_present = true; - std::for_each(mappings.begin(), mappings.end(), [&](const ProcMapsEntry& e1) { - auto it = - std::find_if(maps.begin(), maps.end(), [&e1](const ProcMapsEntry& e2) { - return e1.start == e2.start && e1.end == e2.end && - e1.readable == e2.readable && e1.writable == e2.writable && - e1.executable == e2.executable && e1.priv == e2.priv && - e1.offset == e2.offset && e1.filename == e2.filename; - }); - if (it == maps.end()) { - // It wasn't found. - if (all_present) { - // We will output the message once and then a line for each mapping - // that wasn't found. - all_present = false; - *result_listener << "Got mappings:\n" - << maps << "\nThat were missing:\n"; - } - *result_listener << e1 << "\n"; - } - }); - - return all_present; -} - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_UTIL_PROC_UTIL_H_ diff --git a/test/util/proc_util_test.cc b/test/util/proc_util_test.cc deleted file mode 100644 index 71dd2355e..000000000 --- a/test/util/proc_util_test.cc +++ /dev/null @@ -1,81 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/util/proc_util.h" - -#include "gmock/gmock.h" -#include "gtest/gtest.h" -#include "test/util/test_util.h" - -using ::testing::IsEmpty; - -namespace gvisor { -namespace testing { - -namespace { - -TEST(ParseProcMapsLineTest, WithoutFilename) { - auto entry = ASSERT_NO_ERRNO_AND_VALUE( - ParseProcMapsLine("2ab4f00b7000-2ab4f00b9000 r-xp 00000000 00:00 0 ")); - EXPECT_EQ(entry.start, 0x2ab4f00b7000); - EXPECT_EQ(entry.end, 0x2ab4f00b9000); - EXPECT_TRUE(entry.readable); - EXPECT_FALSE(entry.writable); - EXPECT_TRUE(entry.executable); - EXPECT_TRUE(entry.priv); - EXPECT_EQ(entry.offset, 0); - EXPECT_EQ(entry.major, 0); - EXPECT_EQ(entry.minor, 0); - EXPECT_EQ(entry.inode, 0); - EXPECT_THAT(entry.filename, IsEmpty()); -} - -TEST(ParseProcMapsLineTest, WithFilename) { - auto entry = ASSERT_NO_ERRNO_AND_VALUE( - ParseProcMapsLine("00407000-00408000 rw-p 00006000 00:0e 10 " - " /bin/cat")); - EXPECT_EQ(entry.start, 0x407000); - EXPECT_EQ(entry.end, 0x408000); - EXPECT_TRUE(entry.readable); - EXPECT_TRUE(entry.writable); - EXPECT_FALSE(entry.executable); - EXPECT_TRUE(entry.priv); - EXPECT_EQ(entry.offset, 0x6000); - EXPECT_EQ(entry.major, 0); - EXPECT_EQ(entry.minor, 0x0e); - EXPECT_EQ(entry.inode, 10); - EXPECT_EQ(entry.filename, "/bin/cat"); -} - -TEST(ParseProcMapsLineTest, WithFilenameContainingSpaces) { - auto entry = ASSERT_NO_ERRNO_AND_VALUE( - ParseProcMapsLine("7f26b3b12000-7f26b3b13000 rw-s 00000000 00:05 1432484 " - " /dev/zero (deleted)")); - EXPECT_EQ(entry.start, 0x7f26b3b12000); - EXPECT_EQ(entry.end, 0x7f26b3b13000); - EXPECT_TRUE(entry.readable); - EXPECT_TRUE(entry.writable); - EXPECT_FALSE(entry.executable); - EXPECT_FALSE(entry.priv); - EXPECT_EQ(entry.offset, 0); - EXPECT_EQ(entry.major, 0); - EXPECT_EQ(entry.minor, 0x05); - EXPECT_EQ(entry.inode, 1432484); - EXPECT_EQ(entry.filename, "/dev/zero (deleted)"); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/util/pty_util.cc b/test/util/pty_util.cc deleted file mode 100644 index c01f916aa..000000000 --- a/test/util/pty_util.cc +++ /dev/null @@ -1,53 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/util/pty_util.h" - -#include <sys/ioctl.h> -#include <termios.h> - -#include "test/util/file_descriptor.h" -#include "test/util/posix_error.h" - -namespace gvisor { -namespace testing { - -PosixErrorOr<FileDescriptor> OpenSlave(const FileDescriptor& master) { - PosixErrorOr<int> n = SlaveID(master); - if (!n.ok()) { - return PosixErrorOr<FileDescriptor>(n.error()); - } - return Open(absl::StrCat("/dev/pts/", n.ValueOrDie()), O_RDWR | O_NONBLOCK); -} - -PosixErrorOr<int> SlaveID(const FileDescriptor& master) { - // Get pty index. - int n; - int ret = ioctl(master.get(), TIOCGPTN, &n); - if (ret < 0) { - return PosixError(errno, "ioctl(TIOCGPTN) failed"); - } - - // Unlock pts. - int unlock = 0; - ret = ioctl(master.get(), TIOCSPTLCK, &unlock); - if (ret < 0) { - return PosixError(errno, "ioctl(TIOSPTLCK) failed"); - } - - return n; -} - -} // namespace testing -} // namespace gvisor diff --git a/test/util/pty_util.h b/test/util/pty_util.h deleted file mode 100644 index 0722da379..000000000 --- a/test/util/pty_util.h +++ /dev/null @@ -1,33 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_UTIL_PTY_UTIL_H_ -#define GVISOR_TEST_UTIL_PTY_UTIL_H_ - -#include "test/util/file_descriptor.h" -#include "test/util/posix_error.h" - -namespace gvisor { -namespace testing { - -// Opens the slave end of the passed master as R/W and nonblocking. -PosixErrorOr<FileDescriptor> OpenSlave(const FileDescriptor& master); - -// Get the number of the slave end of the master. -PosixErrorOr<int> SlaveID(const FileDescriptor& master); - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_UTIL_PTY_UTIL_H_ diff --git a/test/util/rlimit_util.cc b/test/util/rlimit_util.cc deleted file mode 100644 index d7bfc1606..000000000 --- a/test/util/rlimit_util.cc +++ /dev/null @@ -1,45 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/util/rlimit_util.h" - -#include <sys/resource.h> - -#include <cerrno> - -#include "test/util/cleanup.h" -#include "test/util/logging.h" -#include "test/util/posix_error.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -PosixErrorOr<Cleanup> ScopedSetSoftRlimit(int resource, rlim_t newval) { - struct rlimit old_rlim; - if (getrlimit(resource, &old_rlim) != 0) { - return PosixError(errno, "getrlimit failed"); - } - struct rlimit new_rlim = old_rlim; - new_rlim.rlim_cur = newval; - if (setrlimit(resource, &new_rlim) != 0) { - return PosixError(errno, "setrlimit failed"); - } - return Cleanup([resource, old_rlim] { - TEST_PCHECK(setrlimit(resource, &old_rlim) == 0); - }); -} - -} // namespace testing -} // namespace gvisor diff --git a/test/util/rlimit_util.h b/test/util/rlimit_util.h deleted file mode 100644 index 873252a32..000000000 --- a/test/util/rlimit_util.h +++ /dev/null @@ -1,32 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_UTIL_RLIMIT_UTIL_H_ -#define GVISOR_TEST_UTIL_RLIMIT_UTIL_H_ - -#include <sys/resource.h> -#include <sys/time.h> - -#include "test/util/cleanup.h" -#include "test/util/posix_error.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -PosixErrorOr<Cleanup> ScopedSetSoftRlimit(int resource, rlim_t newval); - -} // namespace testing -} // namespace gvisor -#endif // GVISOR_TEST_UTIL_RLIMIT_UTIL_H_ diff --git a/test/util/save_util.cc b/test/util/save_util.cc deleted file mode 100644 index 384d626f0..000000000 --- a/test/util/save_util.cc +++ /dev/null @@ -1,71 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/util/save_util.h" - -#include <stddef.h> -#include <stdlib.h> -#include <unistd.h> - -#include <atomic> -#include <cerrno> - -#define GVISOR_COOPERATIVE_SAVE_TEST "GVISOR_COOPERATIVE_SAVE_TEST" - -namespace gvisor { -namespace testing { -namespace { - -enum class CooperativeSaveMode { - kUnknown = 0, // cooperative_save_mode is statically-initialized to 0 - kAvailable, - kNotAvailable, -}; - -std::atomic<CooperativeSaveMode> cooperative_save_mode; - -bool CooperativeSaveEnabled() { - auto mode = cooperative_save_mode.load(); - if (mode == CooperativeSaveMode::kUnknown) { - mode = (getenv(GVISOR_COOPERATIVE_SAVE_TEST) != nullptr) - ? CooperativeSaveMode::kAvailable - : CooperativeSaveMode::kNotAvailable; - cooperative_save_mode.store(mode); - } - return mode == CooperativeSaveMode::kAvailable; -} - -std::atomic<int> save_disable; - -} // namespace - -DisableSave::DisableSave() { save_disable++; } - -DisableSave::~DisableSave() { reset(); } - -void DisableSave::reset() { - if (!reset_) { - reset_ = true; - save_disable--; - } -} - -namespace internal { -bool ShouldSave() { - return CooperativeSaveEnabled() && (save_disable.load() == 0); -} -} // namespace internal - -} // namespace testing -} // namespace gvisor diff --git a/test/util/save_util.h b/test/util/save_util.h deleted file mode 100644 index bddad6120..000000000 --- a/test/util/save_util.h +++ /dev/null @@ -1,52 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_UTIL_SAVE_UTIL_H_ -#define GVISOR_TEST_UTIL_SAVE_UTIL_H_ - -namespace gvisor { -namespace testing { -// Disable save prevents saving while the given function executes. -// -// This lasts the duration of the object, unless reset is called. -class DisableSave { - public: - DisableSave(); - ~DisableSave(); - DisableSave(DisableSave const&) = delete; - DisableSave(DisableSave&&) = delete; - DisableSave& operator=(DisableSave const&) = delete; - DisableSave& operator=(DisableSave&&) = delete; - - // reset allows saves to continue, and is called implicitly by the destructor. - // It may be called multiple times safely, but is not thread-safe. - void reset(); - - private: - bool reset_ = false; -}; - -// May perform a co-operative save cycle. -// -// errno is guaranteed to be preserved. -void MaybeSave(); - -namespace internal { -bool ShouldSave(); -} // namespace internal - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_UTIL_SAVE_UTIL_H_ diff --git a/test/util/save_util_linux.cc b/test/util/save_util_linux.cc deleted file mode 100644 index d0aea8e6a..000000000 --- a/test/util/save_util_linux.cc +++ /dev/null @@ -1,49 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifdef __linux__ - -#include <errno.h> -#include <sys/syscall.h> -#include <unistd.h> - -#include "test/util/save_util.h" - -#if defined(__x86_64__) || defined(__i386__) -#define SYS_TRIGGER_SAVE SYS_create_module -#elif defined(__aarch64__) -#define SYS_TRIGGER_SAVE SYS_finit_module -#else -#error "Unknown architecture" -#endif - -namespace gvisor { -namespace testing { - -void MaybeSave() { - if (internal::ShouldSave()) { - int orig_errno = errno; - // We use it to trigger saving the sentry state - // when this syscall is called. - // Notice: this needs to be a valid syscall - // that is not used in any of the syscall tests. - syscall(SYS_TRIGGER_SAVE, nullptr, 0); - errno = orig_errno; - } -} - -} // namespace testing -} // namespace gvisor - -#endif diff --git a/test/util/save_util_other.cc b/test/util/save_util_other.cc deleted file mode 100644 index 931af2c29..000000000 --- a/test/util/save_util_other.cc +++ /dev/null @@ -1,27 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef __linux__ - -namespace gvisor { -namespace testing { - -void MaybeSave() { - // Saving is never available in a non-linux environment. -} - -} // namespace testing -} // namespace gvisor - -#endif diff --git a/test/util/signal_util.cc b/test/util/signal_util.cc deleted file mode 100644 index 5ee95ee80..000000000 --- a/test/util/signal_util.cc +++ /dev/null @@ -1,104 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/util/signal_util.h" - -#include <signal.h> - -#include <ostream> - -#include "gtest/gtest.h" -#include "test/util/cleanup.h" -#include "test/util/posix_error.h" -#include "test/util/test_util.h" - -namespace { - -struct Range { - int start; - int end; -}; - -// Format a Range as "start-end" or "start" for single value Ranges. -static ::std::ostream& operator<<(::std::ostream& os, const Range& range) { - if (range.end > range.start) { - return os << range.start << '-' << range.end; - } - - return os << range.start; -} - -} // namespace - -// Format a sigset_t as a comma separated list of numeric ranges. -// Empty sigset: [] -// Full sigset: [1-31,34-64] -::std::ostream& operator<<(::std::ostream& os, const sigset_t& sigset) { - const char* delim = ""; - Range range = {0, 0}; - - os << '['; - - for (int sig = 1; sig <= gvisor::testing::kMaxSignal; ++sig) { - if (sigismember(&sigset, sig)) { - if (range.start) { - range.end = sig; - } else { - range.start = sig; - range.end = sig; - } - } else if (range.start) { - os << delim << range; - delim = ","; - range.start = 0; - range.end = 0; - } - } - - if (range.start) { - os << delim << range; - } - - return os << ']'; -} - -namespace gvisor { -namespace testing { - -PosixErrorOr<Cleanup> ScopedSigaction(int sig, struct sigaction const& sa) { - struct sigaction old_sa; - int rc = sigaction(sig, &sa, &old_sa); - MaybeSave(); - if (rc < 0) { - return PosixError(errno, "sigaction failed"); - } - return Cleanup([sig, old_sa] { - EXPECT_THAT(sigaction(sig, &old_sa, nullptr), SyscallSucceeds()); - }); -} - -PosixErrorOr<Cleanup> ScopedSignalMask(int how, sigset_t const& set) { - sigset_t old; - int rc = sigprocmask(how, &set, &old); - MaybeSave(); - if (rc < 0) { - return PosixError(errno, "sigprocmask failed"); - } - return Cleanup([old] { - EXPECT_THAT(sigprocmask(SIG_SETMASK, &old, nullptr), SyscallSucceeds()); - }); -} - -} // namespace testing -} // namespace gvisor diff --git a/test/util/signal_util.h b/test/util/signal_util.h deleted file mode 100644 index e7b66aa51..000000000 --- a/test/util/signal_util.h +++ /dev/null @@ -1,107 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_UTIL_SIGNAL_UTIL_H_ -#define GVISOR_TEST_UTIL_SIGNAL_UTIL_H_ - -#include <signal.h> -#include <sys/syscall.h> -#include <unistd.h> - -#include <ostream> - -#include "gmock/gmock.h" -#include "test/util/cleanup.h" -#include "test/util/posix_error.h" - -// Format a sigset_t as a comma separated list of numeric ranges. -::std::ostream& operator<<(::std::ostream& os, const sigset_t& sigset); - -namespace gvisor { -namespace testing { - -// The maximum signal number. -static constexpr int kMaxSignal = 64; - -// Wrapper for the tgkill(2) syscall, which glibc does not provide. -inline int tgkill(pid_t tgid, pid_t tid, int sig) { - return syscall(__NR_tgkill, tgid, tid, sig); -} - -// Installs the passed sigaction and returns a cleanup function to restore the -// previous handler when it goes out of scope. -PosixErrorOr<Cleanup> ScopedSigaction(int sig, struct sigaction const& sa); - -// Updates the signal mask as per sigprocmask(2) and returns a cleanup function -// to restore the previous signal mask when it goes out of scope. -PosixErrorOr<Cleanup> ScopedSignalMask(int how, sigset_t const& set); - -// ScopedSignalMask variant that creates a mask of the single signal 'sig'. -inline PosixErrorOr<Cleanup> ScopedSignalMask(int how, int sig) { - sigset_t set; - sigemptyset(&set); - sigaddset(&set, sig); - return ScopedSignalMask(how, set); -} - -// Asserts equality of two sigset_t values. -MATCHER_P(EqualsSigset, value, "equals " + ::testing::PrintToString(value)) { - for (int sig = 1; sig <= kMaxSignal; ++sig) { - if (sigismember(&arg, sig) != sigismember(&value, sig)) { - return false; - } - } - return true; -} - -#ifdef __x86_64__ -// Fault can be used to generate a synchronous SIGSEGV. -// -// This fault can be fixed up in a handler via fixup, below. -inline void Fault() { - // Zero and dereference %ax. - asm("movabs $0, %%rax\r\n" - "mov 0(%%rax), %%rax\r\n" - : - : - : "ax"); -} - -// FixupFault fixes up a fault generated by fault, above. -inline void FixupFault(ucontext_t* ctx) { - // Skip the bad instruction above. - // - // The encoding is 0x48 0xab 0x00. - ctx->uc_mcontext.gregs[REG_RIP] += 3; -} -#elif __aarch64__ -inline void Fault() { - // Zero and dereference x0. - asm("mov xzr, x0\r\n" - "str xzr, [x0]\r\n" - : - : - : "x0"); -} - -inline void FixupFault(ucontext_t* ctx) { - // Skip the bad instruction above. - ctx->uc_mcontext.pc += 4; -} -#endif - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_UTIL_SIGNAL_UTIL_H_ diff --git a/test/util/temp_path.cc b/test/util/temp_path.cc deleted file mode 100644 index 9c10b6674..000000000 --- a/test/util/temp_path.cc +++ /dev/null @@ -1,164 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/util/temp_path.h" - -#include <unistd.h> - -#include <atomic> -#include <cstdlib> -#include <iostream> - -#include "gtest/gtest.h" -#include "absl/time/clock.h" -#include "absl/time/time.h" -#include "test/util/fs_util.h" -#include "test/util/posix_error.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -namespace { - -std::atomic<uint64_t> global_temp_file_number = ATOMIC_VAR_INIT(1); - -// Return a new temp filename, intended to be unique system-wide. -// -// The global file number helps maintain file naming consistency across -// different runs of a test. -// -// The timestamp is necessary because the test infrastructure invokes each -// test case in a separate process (resetting global_temp_file_number) and -// potentially in parallel, which allows for races between selecting and using a -// name. -std::string NextTempBasename() { - return absl::StrCat("gvisor_test_temp_", global_temp_file_number++, "_", - absl::ToUnixNanos(absl::Now())); -} - -void TryDeleteRecursively(std::string const& path) { - if (!path.empty()) { - int undeleted_dirs = 0; - int undeleted_files = 0; - auto status = RecursivelyDelete(path, &undeleted_dirs, &undeleted_files); - if (undeleted_dirs || undeleted_files || !status.ok()) { - std::cerr << path << ": failed to delete " << undeleted_dirs - << " directories and " << undeleted_files - << " files: " << status; - } - } -} - -} // namespace - -constexpr mode_t TempPath::kDefaultFileMode; -constexpr mode_t TempPath::kDefaultDirMode; - -std::string NewTempAbsPathInDir(absl::string_view const dir) { - return JoinPath(dir, NextTempBasename()); -} - -std::string NewTempAbsPath() { - return NewTempAbsPathInDir(GetAbsoluteTestTmpdir()); -} - -std::string NewTempRelPath() { return NextTempBasename(); } - -std::string GetAbsoluteTestTmpdir() { - // Note that TEST_TMPDIR is guaranteed to be set. - char* env_tmpdir = getenv("TEST_TMPDIR"); - std::string tmp_dir = - env_tmpdir != nullptr ? std::string(env_tmpdir) : "/tmp"; - - return MakeAbsolute(tmp_dir, "").ValueOrDie(); -} - -PosixErrorOr<TempPath> TempPath::CreateFileWith(absl::string_view const parent, - absl::string_view const content, - mode_t const mode) { - return CreateIn(parent, [=](absl::string_view path) -> PosixError { - // CreateWithContents will call open(O_WRONLY) with the given mode. If the - // mode is not user-writable, save/restore cannot preserve the fd. Hence - // the little permission dance that's done here. - auto res = CreateWithContents(path, content, mode | 0200); - RETURN_IF_ERRNO(res); - - return Chmod(path, mode); - }); -} - -PosixErrorOr<TempPath> TempPath::CreateDirWith(absl::string_view const parent, - mode_t const mode) { - return CreateIn(parent, - [=](absl::string_view path) { return Mkdir(path, mode); }); -} - -PosixErrorOr<TempPath> TempPath::CreateSymlinkTo(absl::string_view const parent, - std::string const& dest) { - return CreateIn(parent, [=](absl::string_view path) { - int ret = symlink(dest.c_str(), std::string(path).c_str()); - if (ret != 0) { - return PosixError(errno, "symlink failed"); - } - return NoError(); - }); -} - -PosixErrorOr<TempPath> TempPath::CreateFileIn(absl::string_view const parent) { - return TempPath::CreateFileWith(parent, absl::string_view(), - kDefaultFileMode); -} - -PosixErrorOr<TempPath> TempPath::CreateDirIn(absl::string_view const parent) { - return TempPath::CreateDirWith(parent, kDefaultDirMode); -} - -PosixErrorOr<TempPath> TempPath::CreateFileMode(mode_t mode) { - return TempPath::CreateFileWith(GetAbsoluteTestTmpdir(), absl::string_view(), - mode); -} - -PosixErrorOr<TempPath> TempPath::CreateFile() { - return TempPath::CreateFileIn(GetAbsoluteTestTmpdir()); -} - -PosixErrorOr<TempPath> TempPath::CreateDir() { - return TempPath::CreateDirIn(GetAbsoluteTestTmpdir()); -} - -TempPath::~TempPath() { TryDeleteRecursively(path_); } - -TempPath::TempPath(TempPath&& orig) { reset(orig.release()); } - -TempPath& TempPath::operator=(TempPath&& orig) { - reset(orig.release()); - return *this; -} - -std::string TempPath::reset(std::string newpath) { - std::string path = path_; - TryDeleteRecursively(path_); - path_ = std::move(newpath); - return path; -} - -std::string TempPath::release() { - std::string path = path_; - path_ = std::string(); - return path; -} - -} // namespace testing -} // namespace gvisor diff --git a/test/util/temp_path.h b/test/util/temp_path.h deleted file mode 100644 index 9e5ac11f4..000000000 --- a/test/util/temp_path.h +++ /dev/null @@ -1,135 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_UTIL_TEMP_PATH_H_ -#define GVISOR_TEST_UTIL_TEMP_PATH_H_ - -#include <sys/stat.h> - -#include <string> -#include <utility> - -#include "absl/strings/str_cat.h" -#include "absl/strings/string_view.h" -#include "test/util/posix_error.h" - -namespace gvisor { -namespace testing { - -// Returns an absolute path for a file in `dir` that does not yet exist. -// Distinct calls to NewTempAbsPathInDir from the same process, even from -// multiple threads, are guaranteed to return different paths. Distinct calls to -// NewTempAbsPathInDir from different processes are not synchronized. -std::string NewTempAbsPathInDir(absl::string_view const dir); - -// Like NewTempAbsPathInDir, but the returned path is in the test's temporary -// directory, as provided by the testing framework. -std::string NewTempAbsPath(); - -// Like NewTempAbsPathInDir, but the returned path is relative (to the current -// working directory). -std::string NewTempRelPath(); - -// Returns the absolute path for the test temp dir. -std::string GetAbsoluteTestTmpdir(); - -// Represents a temporary file or directory. -class TempPath { - public: - // Default creation mode for files. - static constexpr mode_t kDefaultFileMode = 0644; - - // Default creation mode for directories. - static constexpr mode_t kDefaultDirMode = 0755; - - // Creates a temporary file in directory `parent` with mode `mode` and - // contents `content`. - static PosixErrorOr<TempPath> CreateFileWith(absl::string_view parent, - absl::string_view content, - mode_t mode); - - // Creates an empty temporary subdirectory in directory `parent` with mode - // `mode`. - static PosixErrorOr<TempPath> CreateDirWith(absl::string_view parent, - mode_t mode); - - // Creates a temporary symlink in directory `parent` to destination `dest`. - static PosixErrorOr<TempPath> CreateSymlinkTo(absl::string_view parent, - std::string const& dest); - - // Creates an empty temporary file in directory `parent` with mode - // kDefaultFileMode. - static PosixErrorOr<TempPath> CreateFileIn(absl::string_view parent); - - // Creates an empty temporary subdirectory in directory `parent` with mode - // kDefaultDirMode. - static PosixErrorOr<TempPath> CreateDirIn(absl::string_view parent); - - // Creates an empty temporary file in the test's temporary directory with mode - // `mode`. - static PosixErrorOr<TempPath> CreateFileMode(mode_t mode); - - // Creates an empty temporary file in the test's temporary directory with - // mode kDefaultFileMode. - static PosixErrorOr<TempPath> CreateFile(); - - // Creates an empty temporary subdirectory in the test's temporary directory - // with mode kDefaultDirMode. - static PosixErrorOr<TempPath> CreateDir(); - - // Constructs a TempPath that represents nothing. - TempPath() = default; - - // Constructs a TempPath that represents the given path, which will be deleted - // when the TempPath is destroyed. - explicit TempPath(std::string path) : path_(std::move(path)) {} - - // Attempts to delete the represented temporary file or directory (in the - // latter case, also attempts to delete its contents). - ~TempPath(); - - // Attempts to delete the represented temporary file or directory, then - // transfers ownership of the path represented by orig to this TempPath. - TempPath(TempPath&& orig); - TempPath& operator=(TempPath&& orig); - - // Changes the path this TempPath represents. If the TempPath already - // represented a path, deletes and returns that path. Otherwise returns the - // empty string. - std::string reset(std::string newpath); - std::string reset() { return reset(""); } - - // Forgets and returns the path this TempPath represents. The path is not - // deleted. - std::string release(); - - // Returns the path this TempPath represents. - std::string path() const { return path_; } - - private: - template <typename F> - static PosixErrorOr<TempPath> CreateIn(absl::string_view const parent, - F const& f) { - std::string path = NewTempAbsPathInDir(parent); - RETURN_IF_ERRNO(f(path)); - return TempPath(std::move(path)); - } - - std::string path_; -}; - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_UTIL_TEMP_PATH_H_ diff --git a/test/util/test_main.cc b/test/util/test_main.cc deleted file mode 100644 index 5c7ee0064..000000000 --- a/test/util/test_main.cc +++ /dev/null @@ -1,20 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/util/test_util.h" - -int main(int argc, char** argv) { - gvisor::testing::TestInit(&argc, &argv); - return RUN_ALL_TESTS(); -} diff --git a/test/util/test_util.cc b/test/util/test_util.cc deleted file mode 100644 index 95e1e0c96..000000000 --- a/test/util/test_util.cc +++ /dev/null @@ -1,224 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/util/test_util.h" - -#include <limits.h> -#include <stdlib.h> -#include <string.h> -#include <sys/stat.h> -#include <sys/types.h> -#include <sys/uio.h> -#include <sys/utsname.h> -#include <unistd.h> - -#include <ctime> -#include <iostream> -#include <vector> - -#include "absl/base/attributes.h" -#include "absl/flags/flag.h" // IWYU pragma: keep -#include "absl/flags/parse.h" // IWYU pragma: keep -#include "absl/strings/numbers.h" -#include "absl/strings/str_cat.h" -#include "absl/strings/str_split.h" -#include "absl/time/time.h" -#include "test/util/fs_util.h" -#include "test/util/posix_error.h" - -namespace gvisor { -namespace testing { - -#define TEST_ON_GVISOR "TEST_ON_GVISOR" -#define GVISOR_NETWORK "GVISOR_NETWORK" - -bool IsRunningOnGvisor() { return GvisorPlatform() != Platform::kNative; } - -const std::string GvisorPlatform() { - // Set by runner.go. - char* env = getenv(TEST_ON_GVISOR); - if (!env) { - return Platform::kNative; - } - return std::string(env); -} - -bool IsRunningWithHostinet() { - char* env = getenv(GVISOR_NETWORK); - return env && strcmp(env, "host") == 0; -} - -// Inline cpuid instruction. Preserve %ebx/%rbx register. In PIC compilations -// %ebx contains the address of the global offset table. %rbx is occasionally -// used to address stack variables in presence of dynamic allocas. -#if defined(__x86_64__) -#define GETCPUID(a, b, c, d, a_inp, c_inp) \ - asm("mov %%rbx, %%rdi\n" \ - "cpuid\n" \ - "xchg %%rdi, %%rbx\n" \ - : "=a"(a), "=D"(b), "=c"(c), "=d"(d) \ - : "a"(a_inp), "2"(c_inp)) - -CPUVendor GetCPUVendor() { - uint32_t eax, ebx, ecx, edx; - std::string vendor_str; - // Get vendor string (issue CPUID with eax = 0) - GETCPUID(eax, ebx, ecx, edx, 0, 0); - vendor_str.append(reinterpret_cast<char*>(&ebx), 4); - vendor_str.append(reinterpret_cast<char*>(&edx), 4); - vendor_str.append(reinterpret_cast<char*>(&ecx), 4); - if (vendor_str == "GenuineIntel") { - return CPUVendor::kIntel; - } else if (vendor_str == "AuthenticAMD") { - return CPUVendor::kAMD; - } - return CPUVendor::kUnknownVendor; -} -#endif // defined(__x86_64__) - -bool operator==(const KernelVersion& first, const KernelVersion& second) { - return first.major == second.major && first.minor == second.minor && - first.micro == second.micro; -} - -PosixErrorOr<KernelVersion> ParseKernelVersion(absl::string_view vers_str) { - KernelVersion version = {}; - std::vector<std::string> values = - absl::StrSplit(vers_str, absl::ByAnyChar(".-")); - if (values.size() == 2) { - ASSIGN_OR_RETURN_ERRNO(version.major, Atoi<int>(values[0])); - ASSIGN_OR_RETURN_ERRNO(version.minor, Atoi<int>(values[1])); - return version; - } else if (values.size() >= 3) { - ASSIGN_OR_RETURN_ERRNO(version.major, Atoi<int>(values[0])); - ASSIGN_OR_RETURN_ERRNO(version.minor, Atoi<int>(values[1])); - ASSIGN_OR_RETURN_ERRNO(version.micro, Atoi<int>(values[2])); - return version; - } - return PosixError(EINVAL, absl::StrCat("Unknown kernel release: ", vers_str)); -} - -PosixErrorOr<KernelVersion> GetKernelVersion() { - utsname buf; - RETURN_ERROR_IF_SYSCALL_FAIL(uname(&buf)); - return ParseKernelVersion(buf.release); -} - -std::string CPUSetToString(const cpu_set_t& set, size_t cpus) { - std::string str = "cpuset["; - for (unsigned int n = 0; n < cpus; n++) { - if (CPU_ISSET(n, &set)) { - if (n != 0) { - absl::StrAppend(&str, " "); - } - absl::StrAppend(&str, n); - } - } - absl::StrAppend(&str, "]"); - return str; -} - -// An overloaded operator<< makes it easy to dump the value of an OpenFd. -std::ostream& operator<<(std::ostream& out, OpenFd const& ofd) { - out << ofd.fd << " -> " << ofd.link; - return out; -} - -// An overloaded operator<< makes it easy to dump a vector of OpenFDs. -std::ostream& operator<<(std::ostream& out, std::vector<OpenFd> const& v) { - for (const auto& ofd : v) { - out << ofd << std::endl; - } - return out; -} - -PosixErrorOr<std::vector<OpenFd>> GetOpenFDs() { - // Get the results from /proc/self/fd. - ASSIGN_OR_RETURN_ERRNO(auto dir_list, - ListDir("/proc/self/fd", /*skipdots=*/true)); - - std::vector<OpenFd> ret_fds; - for (const auto& str_fd : dir_list) { - OpenFd open_fd = {}; - ASSIGN_OR_RETURN_ERRNO(open_fd.fd, Atoi<int>(str_fd)); - std::string path = absl::StrCat("/proc/self/fd/", open_fd.fd); - - // Resolve the link. - char buf[PATH_MAX] = {}; - int ret = readlink(path.c_str(), buf, sizeof(buf)); - if (ret < 0) { - if (errno == ENOENT) { - // The FD may have been closed, let's be resilient. - continue; - } - - return PosixError( - errno, absl::StrCat("readlink of ", path, " returned errno ", errno)); - } - open_fd.link = std::string(buf, ret); - ret_fds.emplace_back(std::move(open_fd)); - } - return ret_fds; -} - -PosixErrorOr<uint64_t> Links(const std::string& path) { - struct stat st; - if (stat(path.c_str(), &st)) { - return PosixError(errno, absl::StrCat("Failed to stat ", path)); - } - return static_cast<uint64_t>(st.st_nlink); -} - -void RandomizeBuffer(void* buffer, size_t len) { - struct timespec ts = {}; - clock_gettime(CLOCK_MONOTONIC, &ts); - uint32_t seed = static_cast<uint32_t>(ts.tv_nsec); - char* const buf = static_cast<char*>(buffer); - for (size_t i = 0; i < len; i++) { - buf[i] = rand_r(&seed) % 255; - } -} - -std::vector<std::vector<struct iovec>> GenerateIovecs(uint64_t total_size, - void* buf, - size_t buflen) { - std::vector<std::vector<struct iovec>> result; - for (uint64_t offset = 0; offset < total_size;) { - auto& iovec_array = *result.emplace(result.end()); - - for (; offset < total_size && iovec_array.size() < IOV_MAX; - offset += buflen) { - struct iovec iov = {}; - iov.iov_base = buf; - iov.iov_len = std::min<uint64_t>(total_size - offset, buflen); - iovec_array.push_back(iov); - } - } - - return result; -} - -uint64_t Megabytes(uint64_t n) { - // Overflow check, upper 20 bits in n shouldn't be set. - TEST_CHECK(!(0xfffff00000000000 & n)); - return n << 20; -} - -bool Equivalent(uint64_t current, uint64_t target, double tolerance) { - auto abs_diff = target > current ? target - current : current - target; - return abs_diff <= static_cast<uint64_t>(tolerance * target); -} - -} // namespace testing -} // namespace gvisor diff --git a/test/util/test_util.h b/test/util/test_util.h deleted file mode 100644 index 2d22b0eb8..000000000 --- a/test/util/test_util.h +++ /dev/null @@ -1,778 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -// Utilities for syscall testing. -// -// Initialization -// ============== -// -// Prior to calling RUN_ALL_TESTS, all tests must use TestInit(&argc, &argv). -// See the TestInit function for exact side-effects and semantics. -// -// Configuration -// ============= -// -// IsRunningOnGvisor returns true if the test is known to be running on gVisor. -// GvisorPlatform can be used to get more detail: -// -// if (GvisorPlatform() == Platform::kPtrace) { -// ... -// } -// -// SetupGvisorDeathTest ensures that signal handling does not interfere with -/// tests that rely on fatal signals. -// -// Matchers -// ======== -// -// ElementOf(xs) matches if the matched value is equal to an element of the -// container xs. Example: -// -// // PASS -// EXPECT_THAT(1, ElementOf({0, 1, 2})); -// -// // FAIL -// // Value of: 3 -// // Expected: one of {0, 1, 2} -// // Actual: 3 -// EXPECT_THAT(3, ElementOf({0, 1, 2})); -// -// SyscallSucceeds() matches if the syscall is successful. A successful syscall -// is defined by either a return value not equal to -1, or a return value of -1 -// with an errno of 0 (which is a possible successful return for e.g. -// PTRACE_PEEK). Example: -// -// // PASS -// EXPECT_THAT(open("/dev/null", O_RDONLY), SyscallSucceeds()); -// -// // FAIL -// // Value of: open("/", O_RDWR) -// // Expected: not -1 (success) -// // Actual: -1 (of type int), with errno 21 (Is a directory) -// EXPECT_THAT(open("/", O_RDWR), SyscallSucceeds()); -// -// SyscallSucceedsWithValue(m) matches if the syscall is successful, and the -// value also matches m. Example: -// -// // PASS -// EXPECT_THAT(read(4, buf, 8192), SyscallSucceedsWithValue(8192)); -// -// // FAIL -// // Value of: read(-1, buf, 8192) -// // Expected: is equal to 8192 -// // Actual: -1 (of type long), with errno 9 (Bad file number) -// EXPECT_THAT(read(-1, buf, 8192), SyscallSucceedsWithValue(8192)); -// -// // FAIL -// // Value of: read(4, buf, 1) -// // Expected: is > 4096 -// // Actual: 1 (of type long) -// EXPECT_THAT(read(4, buf, 1), SyscallSucceedsWithValue(Gt(4096))); -// -// SyscallFails() matches if the syscall is unsuccessful. An unsuccessful -// syscall is defined by a return value of -1 with a non-zero errno. Example: -// -// // PASS -// EXPECT_THAT(open("/", O_RDWR), SyscallFails()); -// -// // FAIL -// // Value of: open("/dev/null", O_RDONLY) -// // Expected: -1 (failure) -// // Actual: 0 (of type int) -// EXPECT_THAT(open("/dev/null", O_RDONLY), SyscallFails()); -// -// SyscallFailsWithErrno(m) matches if the syscall is unsuccessful, and errno -// matches m. Example: -// -// // PASS -// EXPECT_THAT(open("/", O_RDWR), SyscallFailsWithErrno(EISDIR)); -// -// // PASS -// EXPECT_THAT(open("/etc/passwd", O_RDWR | O_DIRECTORY), -// SyscallFailsWithErrno(AnyOf(EACCES, ENOTDIR))); -// -// // FAIL -// // Value of: open("/dev/null", O_RDONLY) -// // Expected: -1 (failure) with errno 21 (Is a directory) -// // Actual: 0 (of type int) -// EXPECT_THAT(open("/dev/null", O_RDONLY), SyscallFailsWithErrno(EISDIR)); -// -// // FAIL -// // Value of: open("/", O_RDWR) -// // Expected: -1 (failure) with errno 22 (Invalid argument) -// // Actual: -1 (of type int), failure, but with errno 21 (Is a directory) -// EXPECT_THAT(open("/", O_RDWR), SyscallFailsWithErrno(EINVAL)); -// -// Because the syscall matchers encode save/restore functionality, their meaning -// should not be inverted via Not. That is, AnyOf(SyscallSucceedsWithValue(1), -// SyscallSucceedsWithValue(2)) is permitted, but not -// Not(SyscallFailsWithErrno(EPERM)). -// -// Syscalls -// ======== -// -// RetryEINTR wraps a function that returns -1 and sets errno on failure -// to be automatically retried when EINTR occurs. Example: -// -// auto rv = RetryEINTR(waitpid)(pid, &status, 0); -// -// ReadFd/WriteFd/PreadFd/PwriteFd are interface-compatible wrappers around the -// read/write/pread/pwrite syscalls to handle both EINTR and partial -// reads/writes. Example: -// -// EXPECT_THAT(ReadFd(fd, &buf, size), SyscallSucceedsWithValue(size)); -// -// General Utilities -// ================= -// -// ApplyVec(f, xs) returns a vector containing the result of applying function -// `f` to each value in `xs`. -// -// AllBitwiseCombinations takes a variadic number of ranges containing integers -// and returns a vector containing every integer that can be formed by ORing -// together exactly one integer from each list. List<T> is an alias for -// std::initializer_list<T> that makes AllBitwiseCombinations more ergonomic to -// use with list literals (initializer lists do not otherwise participate in -// template argument deduction). Example: -// -// EXPECT_THAT( -// AllBitwiseCombinations<int>( -// List<int>{SOCK_DGRAM, SOCK_STREAM}, -// List<int>{0, SOCK_NONBLOCK}), -// Contains({SOCK_DGRAM, SOCK_STREAM, SOCK_DGRAM | SOCK_NONBLOCK, -// SOCK_STREAM | SOCK_NONBLOCK})); -// -// VecCat takes a variadic number of containers and returns a vector containing -// the concatenated contents. -// -// VecAppend takes an initial container and a variadic number of containers and -// appends each to the initial container. -// -// RandomizeBuffer will use MTRandom to fill the given buffer with random bytes. -// -// GenerateIovecs will return the smallest number of iovec arrays for writing a -// given total number of bytes to a file, each iovec array size up to IOV_MAX, -// each iovec in each array pointing to the same buffer. - -#ifndef GVISOR_TEST_UTIL_TEST_UTIL_H_ -#define GVISOR_TEST_UTIL_TEST_UTIL_H_ - -#include <stddef.h> -#include <stdlib.h> -#include <sys/uio.h> -#include <unistd.h> - -#include <algorithm> -#include <cerrno> -#include <initializer_list> -#include <iterator> -#include <string> -#include <thread> // NOLINT: using std::thread::hardware_concurrency(). -#include <utility> -#include <vector> - -#include "gmock/gmock.h" -#include "absl/strings/str_cat.h" -#include "absl/strings/str_format.h" -#include "absl/strings/string_view.h" -#include "absl/time/time.h" -#include "test/util/fs_util.h" -#include "test/util/logging.h" -#include "test/util/posix_error.h" -#include "test/util/save_util.h" - -namespace gvisor { -namespace testing { - -// TestInit must be called prior to RUN_ALL_TESTS. -// -// This parses all arguments and adjusts argc and argv appropriately. -// -// TestInit may create background threads. -void TestInit(int* argc, char*** argv); - -// SKIP_IF may be used to skip a test case. -// -// These cases are still emitted, but a SKIPPED line will appear. -#define SKIP_IF(expr) \ - do { \ - if (expr) GTEST_SKIP() << #expr; \ - } while (0) - -// Platform contains platform names. -namespace Platform { -constexpr char kNative[] = "native"; -constexpr char kPtrace[] = "ptrace"; -constexpr char kKVM[] = "kvm"; -} // namespace Platform - -bool IsRunningOnGvisor(); -const std::string GvisorPlatform(); -bool IsRunningWithHostinet(); - -#ifdef __linux__ -void SetupGvisorDeathTest(); -#endif - -struct KernelVersion { - int major; - int minor; - int micro; -}; - -bool operator==(const KernelVersion& first, const KernelVersion& second); - -PosixErrorOr<KernelVersion> ParseKernelVersion(absl::string_view vers_string); -PosixErrorOr<KernelVersion> GetKernelVersion(); - -static const size_t kPageSize = sysconf(_SC_PAGESIZE); - -enum class CPUVendor { kIntel, kAMD, kUnknownVendor }; - -CPUVendor GetCPUVendor(); - -inline int NumCPUs() { return std::thread::hardware_concurrency(); } - -// Converts cpu_set_t to a std::string for easy examination. -std::string CPUSetToString(const cpu_set_t& set, size_t cpus = CPU_SETSIZE); - -struct OpenFd { - // fd is the open file descriptor number. - int fd = -1; - - // link is the resolution of the symbolic link. - std::string link; -}; - -// Make it easier to log OpenFds to error streams. -std::ostream& operator<<(std::ostream& out, std::vector<OpenFd> const& v); -std::ostream& operator<<(std::ostream& out, OpenFd const& ofd); - -// Gets a detailed list of open fds for this process. -PosixErrorOr<std::vector<OpenFd>> GetOpenFDs(); - -// Returns the number of hard links to a path. -PosixErrorOr<uint64_t> Links(const std::string& path); - -namespace internal { - -template <typename Container> -class ElementOfMatcher { - public: - explicit ElementOfMatcher(Container container) - : container_(::std::move(container)) {} - - template <typename T> - bool MatchAndExplain(T const& rv, - ::testing::MatchResultListener* const listener) const { - using std::count; - return count(container_.begin(), container_.end(), rv) != 0; - } - - void DescribeTo(::std::ostream* const os) const { - *os << "one of {"; - char const* sep = ""; - for (auto const& elem : container_) { - *os << sep << elem; - sep = ", "; - } - *os << "}"; - } - - void DescribeNegationTo(::std::ostream* const os) const { - *os << "none of {"; - char const* sep = ""; - for (auto const& elem : container_) { - *os << sep << elem; - sep = ", "; - } - *os << "}"; - } - - private: - Container const container_; -}; - -template <typename E> -class SyscallSuccessMatcher { - public: - explicit SyscallSuccessMatcher(E expected) - : expected_(::std::move(expected)) {} - - template <typename T> - operator ::testing::Matcher<T>() const { - // E is one of three things: - // - T, or a type losslessly and implicitly convertible to T. - // - A monomorphic Matcher<T>. - // - A polymorphic matcher. - // SafeMatcherCast handles any of the above correctly. - // - // Similarly, gMock will invoke this conversion operator to obtain a - // monomorphic matcher (this is how polymorphic matchers are implemented). - return ::testing::MakeMatcher( - new Impl<T>(::testing::SafeMatcherCast<T>(expected_))); - } - - private: - template <typename T> - class Impl : public ::testing::MatcherInterface<T> { - public: - explicit Impl(::testing::Matcher<T> matcher) - : matcher_(::std::move(matcher)) {} - - bool MatchAndExplain( - T const& rv, - ::testing::MatchResultListener* const listener) const override { - if (rv == static_cast<decltype(rv)>(-1) && errno != 0) { - *listener << "with errno " << PosixError(errno); - return false; - } - bool match = matcher_.MatchAndExplain(rv, listener); - if (match) { - MaybeSave(); - } - return match; - } - - void DescribeTo(::std::ostream* const os) const override { - matcher_.DescribeTo(os); - } - - void DescribeNegationTo(::std::ostream* const os) const override { - matcher_.DescribeNegationTo(os); - } - - private: - ::testing::Matcher<T> matcher_; - }; - - private: - E expected_; -}; - -// A polymorphic matcher equivalent to ::testing::internal::AnyMatcher, except -// not in namespace ::testing::internal, and describing SyscallSucceeds()'s -// match constraints (which are enforced by SyscallSuccessMatcher::Impl). -class AnySuccessValueMatcher { - public: - template <typename T> - operator ::testing::Matcher<T>() const { - return ::testing::MakeMatcher(new Impl<T>()); - } - - private: - template <typename T> - class Impl : public ::testing::MatcherInterface<T> { - public: - bool MatchAndExplain( - T const& rv, - ::testing::MatchResultListener* const listener) const override { - return true; - } - - void DescribeTo(::std::ostream* const os) const override { - *os << "not -1 (success)"; - } - - void DescribeNegationTo(::std::ostream* const os) const override { - *os << "-1 (failure)"; - } - }; -}; - -class SyscallFailureMatcher { - public: - explicit SyscallFailureMatcher(::testing::Matcher<int> errno_matcher) - : errno_matcher_(std::move(errno_matcher)) {} - - template <typename T> - bool MatchAndExplain(T const& rv, - ::testing::MatchResultListener* const listener) const { - if (rv != static_cast<decltype(rv)>(-1)) { - return false; - } - int actual_errno = errno; - *listener << "with errno " << PosixError(actual_errno); - bool match = errno_matcher_.MatchAndExplain(actual_errno, listener); - if (match) { - MaybeSave(); - } - return match; - } - - void DescribeTo(::std::ostream* const os) const { - *os << "-1 (failure), with errno "; - errno_matcher_.DescribeTo(os); - } - - void DescribeNegationTo(::std::ostream* const os) const { - *os << "not -1 (success), with errno "; - errno_matcher_.DescribeNegationTo(os); - } - - private: - ::testing::Matcher<int> errno_matcher_; -}; - -class SpecificErrnoMatcher : public ::testing::MatcherInterface<int> { - public: - explicit SpecificErrnoMatcher(int const expected) : expected_(expected) {} - - bool MatchAndExplain( - int const actual_errno, - ::testing::MatchResultListener* const listener) const override { - return actual_errno == expected_; - } - - void DescribeTo(::std::ostream* const os) const override { - *os << PosixError(expected_); - } - - void DescribeNegationTo(::std::ostream* const os) const override { - *os << "not " << PosixError(expected_); - } - - private: - int const expected_; -}; - -inline ::testing::Matcher<int> SpecificErrno(int const expected) { - return ::testing::MakeMatcher(new SpecificErrnoMatcher(expected)); -} - -} // namespace internal - -template <typename Container> -inline ::testing::PolymorphicMatcher<internal::ElementOfMatcher<Container>> -ElementOf(Container container) { - return ::testing::MakePolymorphicMatcher( - internal::ElementOfMatcher<Container>(::std::move(container))); -} - -template <typename T> -inline ::testing::PolymorphicMatcher< - internal::ElementOfMatcher<::std::vector<T>>> -ElementOf(::std::initializer_list<T> elems) { - return ::testing::MakePolymorphicMatcher( - internal::ElementOfMatcher<::std::vector<T>>(::std::vector<T>(elems))); -} - -template <typename E> -inline internal::SyscallSuccessMatcher<E> SyscallSucceedsWithValue(E expected) { - return internal::SyscallSuccessMatcher<E>(::std::move(expected)); -} - -inline internal::SyscallSuccessMatcher<internal::AnySuccessValueMatcher> -SyscallSucceeds() { - return SyscallSucceedsWithValue( - ::gvisor::testing::internal::AnySuccessValueMatcher()); -} - -inline ::testing::PolymorphicMatcher<internal::SyscallFailureMatcher> -SyscallFailsWithErrno(::testing::Matcher<int> expected) { - return ::testing::MakePolymorphicMatcher( - internal::SyscallFailureMatcher(::std::move(expected))); -} - -// Overload taking an int so that SyscallFailsWithErrno(<specific errno>) uses -// internal::SpecificErrno (which stringifies the errno) rather than -// ::testing::Eq (which doesn't). -inline ::testing::PolymorphicMatcher<internal::SyscallFailureMatcher> -SyscallFailsWithErrno(int const expected) { - return SyscallFailsWithErrno(internal::SpecificErrno(expected)); -} - -inline ::testing::PolymorphicMatcher<internal::SyscallFailureMatcher> -SyscallFails() { - return SyscallFailsWithErrno(::testing::Gt(0)); -} - -// As of GCC 7.2, -Wall => -Wc++17-compat => -Wnoexcept-type generates an -// irrelevant, non-actionable warning about ABI compatibility when -// RetryEINTRImpl is constructed with a noexcept function, such as glibc's -// syscall(). See https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80985. -#if defined(__GNUC__) && !defined(__clang__) && \ - (__GNUC__ > 7 || (__GNUC__ == 7 && __GNUC_MINOR__ >= 2)) -#pragma GCC diagnostic push -#pragma GCC diagnostic ignored "-Wnoexcept-type" -#endif - -namespace internal { - -template <typename F> -struct RetryEINTRImpl { - F const f; - - explicit constexpr RetryEINTRImpl(F f) : f(std::move(f)) {} - - template <typename... Args> - auto operator()(Args&&... args) const - -> decltype(f(std::forward<Args>(args)...)) { - while (true) { - errno = 0; - auto const ret = f(std::forward<Args>(args)...); - if (ret != -1 || errno != EINTR) { - return ret; - } - } - } -}; - -} // namespace internal - -template <typename F> -constexpr internal::RetryEINTRImpl<F> RetryEINTR(F&& f) { - return internal::RetryEINTRImpl<F>(std::forward<F>(f)); -} - -#if defined(__GNUC__) && !defined(__clang__) && \ - (__GNUC__ > 7 || (__GNUC__ == 7 && __GNUC_MINOR__ >= 2)) -#pragma GCC diagnostic pop -#endif - -namespace internal { - -template <typename F> -ssize_t ApplyFileIoSyscall(F const& f, size_t const count) { - size_t completed = 0; - // `do ... while` because some callers actually want to make a syscall with a - // count of 0. - do { - auto const cur = RetryEINTR(f)(completed); - if (cur < 0) { - return cur; - } else if (cur == 0) { - break; - } - completed += cur; - } while (completed < count); - return completed; -} - -} // namespace internal - -inline ssize_t ReadFd(int fd, void* buf, size_t count) { - return internal::ApplyFileIoSyscall( - [&](size_t completed) { - return read(fd, static_cast<char*>(buf) + completed, count - completed); - }, - count); -} - -inline ssize_t WriteFd(int fd, void const* buf, size_t count) { - return internal::ApplyFileIoSyscall( - [&](size_t completed) { - return write(fd, static_cast<char const*>(buf) + completed, - count - completed); - }, - count); -} - -inline ssize_t PreadFd(int fd, void* buf, size_t count, off_t offset) { - return internal::ApplyFileIoSyscall( - [&](size_t completed) { - return pread(fd, static_cast<char*>(buf) + completed, count - completed, - offset + completed); - }, - count); -} - -inline ssize_t PwriteFd(int fd, void const* buf, size_t count, off_t offset) { - return internal::ApplyFileIoSyscall( - [&](size_t completed) { - return pwrite(fd, static_cast<char const*>(buf) + completed, - count - completed, offset + completed); - }, - count); -} - -template <typename T> -using List = std::initializer_list<T>; - -namespace internal { - -template <typename T> -void AppendAllBitwiseCombinations(std::vector<T>* combinations, T current) { - combinations->push_back(current); -} - -template <typename T, typename Arg, typename... Args> -void AppendAllBitwiseCombinations(std::vector<T>* combinations, T current, - Arg&& next, Args&&... rest) { - for (auto const option : next) { - AppendAllBitwiseCombinations(combinations, current | option, rest...); - } -} - -inline size_t CombinedSize(size_t accum) { return accum; } - -template <typename T, typename... Args> -size_t CombinedSize(size_t accum, T const& x, Args&&... xs) { - return CombinedSize(accum + x.size(), std::forward<Args>(xs)...); -} - -// Base case: no more containers, so do nothing. -template <typename T> -void DoMoveExtendContainer(T* c) {} - -// Append each container next to c. -template <typename T, typename U, typename... Args> -void DoMoveExtendContainer(T* c, U&& next, Args&&... rest) { - std::move(std::begin(next), std::end(next), std::back_inserter(*c)); - DoMoveExtendContainer(c, std::forward<Args>(rest)...); -} - -} // namespace internal - -template <typename T = int> -std::vector<T> AllBitwiseCombinations() { - return std::vector<T>(); -} - -template <typename T = int, typename... Args> -std::vector<T> AllBitwiseCombinations(Args&&... args) { - std::vector<T> combinations; - internal::AppendAllBitwiseCombinations(&combinations, 0, args...); - return combinations; -} - -template <typename T, typename U, typename F> -std::vector<T> ApplyVec(F const& f, std::vector<U> const& us) { - std::vector<T> vec; - vec.reserve(us.size()); - for (auto const& u : us) { - vec.push_back(f(u)); - } - return vec; -} - -template <typename T, typename U> -std::vector<T> ApplyVecToVec(std::vector<std::function<T(U)>> const& fs, - std::vector<U> const& us) { - std::vector<T> vec; - vec.reserve(us.size() * fs.size()); - for (auto const& f : fs) { - for (auto const& u : us) { - vec.push_back(f(u)); - } - } - return vec; -} - -// Moves all elements from the containers `args` to the end of `c`. -template <typename T, typename... Args> -void VecAppend(T* c, Args&&... args) { - c->reserve(internal::CombinedSize(c->size(), args...)); - internal::DoMoveExtendContainer(c, std::forward<Args>(args)...); -} - -// Returns a vector containing the concatenated contents of the containers -// `args`. -template <typename T, typename... Args> -std::vector<T> VecCat(Args&&... args) { - std::vector<T> combined; - VecAppend(&combined, std::forward<Args>(args)...); - return combined; -} - -#define RETURN_ERROR_IF_SYSCALL_FAIL(syscall) \ - do { \ - if ((syscall) < 0 && errno != 0) { \ - return PosixError(errno, #syscall); \ - } \ - } while (false) - -// Fill the given buffer with random bytes. -void RandomizeBuffer(void* buffer, size_t len); - -template <typename T> -inline PosixErrorOr<T> Atoi(absl::string_view str) { - T ret; - if (!absl::SimpleAtoi<T>(str, &ret)) { - return PosixError(EINVAL, "String not a number."); - } - return ret; -} - -inline PosixErrorOr<uint64_t> AtoiBase(absl::string_view str, int base) { - if (base > 255 || base < 2) { - return PosixError(EINVAL, "Invalid Base"); - } - - uint64_t ret = 0; - if (!absl::numbers_internal::safe_strtou64_base(str, &ret, base)) { - return PosixError(EINVAL, "String not a number."); - } - - return ret; -} - -inline PosixErrorOr<double> Atod(absl::string_view str) { - double ret; - if (!absl::SimpleAtod(str, &ret)) { - return PosixError(EINVAL, "String not a double type."); - } - return ret; -} - -inline PosixErrorOr<float> Atof(absl::string_view str) { - float ret; - if (!absl::SimpleAtof(str, &ret)) { - return PosixError(EINVAL, "String not a float type."); - } - return ret; -} - -// Return the smallest number of iovec arrays that can be used to write -// "total_bytes" number of bytes, each iovec writing one "buf". -std::vector<std::vector<struct iovec>> GenerateIovecs(uint64_t total_size, - void* buf, size_t buflen); - -// Returns bytes in 'n' megabytes. Used for readability. -uint64_t Megabytes(uint64_t n); - -// Predicate for checking that a value is within some tolerance of another -// value. Returns true iff current is in the range [target * (1 - tolerance), -// target * (1 + tolerance)]. -bool Equivalent(uint64_t current, uint64_t target, double tolerance); - -// Matcher wrapping the Equivalent predicate. -MATCHER_P2(EquivalentWithin, target, tolerance, - std::string(negation ? "Isn't" : "Is") + - ::absl::StrFormat(" within %.2f%% of the target of %zd bytes", - tolerance * 100, target)) { - if (target == 0) { - *result_listener << ::absl::StreamFormat("difference of infinity%%"); - } else { - int64_t delta = static_cast<int64_t>(arg) - static_cast<int64_t>(target); - double delta_percent = - static_cast<double>(delta) / static_cast<double>(target) * 100; - *result_listener << ::absl::StreamFormat("difference of %.2f%%", - delta_percent); - } - return Equivalent(arg, target, tolerance); -} - -// Returns the absolute path to the a data dependency. 'path' is the runfile -// location relative to workspace root. -#ifdef __linux__ -std::string RunfilePath(std::string path); -#endif - -void TestInit(int* argc, char*** argv); - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_UTIL_TEST_UTIL_H_ diff --git a/test/util/test_util_impl.cc b/test/util/test_util_impl.cc deleted file mode 100644 index ba7c0a85b..000000000 --- a/test/util/test_util_impl.cc +++ /dev/null @@ -1,38 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include <signal.h> - -#include "gtest/gtest.h" -#include "absl/flags/flag.h" -#include "absl/flags/parse.h" -#include "test/util/logging.h" - -namespace gvisor { -namespace testing { - -void SetupGvisorDeathTest() {} - -void TestInit(int* argc, char*** argv) { - ::testing::InitGoogleTest(argc, *argv); - ::absl::ParseCommandLine(*argc, *argv); - - // Always mask SIGPIPE as it's common and tests aren't expected to handle it. - struct sigaction sa = {}; - sa.sa_handler = SIG_IGN; - TEST_CHECK(sigaction(SIGPIPE, &sa, nullptr) == 0); -} - -} // namespace testing -} // namespace gvisor diff --git a/test/util/test_util_runfiles.cc b/test/util/test_util_runfiles.cc deleted file mode 100644 index 694d21692..000000000 --- a/test/util/test_util_runfiles.cc +++ /dev/null @@ -1,50 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef __fuchsia__ - -#include <iostream> -#include <string> - -#include "test/util/fs_util.h" -#include "test/util/test_util.h" -#include "tools/cpp/runfiles/runfiles.h" - -namespace gvisor { -namespace testing { - -std::string RunfilePath(std::string path) { - static const bazel::tools::cpp::runfiles::Runfiles* const runfiles = [] { - std::string error; - auto* runfiles = - bazel::tools::cpp::runfiles::Runfiles::CreateForTest(&error); - if (runfiles == nullptr) { - std::cerr << "Unable to find runfiles: " << error << std::endl; - } - return runfiles; - }(); - - if (!runfiles) { - // Can't find runfiles? This probably won't work, but __main__/path is our - // best guess. - return JoinPath("__main__", path); - } - - return runfiles->Rlocation(JoinPath("__main__", path)); -} - -} // namespace testing -} // namespace gvisor - -#endif // __fuchsia__ diff --git a/test/util/test_util_test.cc b/test/util/test_util_test.cc deleted file mode 100644 index f42100374..000000000 --- a/test/util/test_util_test.cc +++ /dev/null @@ -1,251 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/util/test_util.h" - -#include <errno.h> - -#include <vector> - -#include "gmock/gmock.h" -#include "gtest/gtest.h" - -using ::testing::AnyOf; -using ::testing::Gt; -using ::testing::IsEmpty; -using ::testing::Lt; -using ::testing::Not; -using ::testing::TypedEq; -using ::testing::UnorderedElementsAre; -using ::testing::UnorderedElementsAreArray; - -namespace gvisor { -namespace testing { - -namespace { - -TEST(KernelVersionParsing, ValidateParsing) { - KernelVersion v = ASSERT_NO_ERRNO_AND_VALUE( - ParseKernelVersion("4.18.10-1foo2-amd64 baz blah")); - ASSERT_TRUE(v == KernelVersion({4, 18, 10})); - - v = ASSERT_NO_ERRNO_AND_VALUE(ParseKernelVersion("4.18.10-1foo2-amd64")); - ASSERT_TRUE(v == KernelVersion({4, 18, 10})); - - v = ASSERT_NO_ERRNO_AND_VALUE(ParseKernelVersion("4.18.10-14-amd64")); - ASSERT_TRUE(v == KernelVersion({4, 18, 10})); - - v = ASSERT_NO_ERRNO_AND_VALUE(ParseKernelVersion("4.18.10-amd64")); - ASSERT_TRUE(v == KernelVersion({4, 18, 10})); - - v = ASSERT_NO_ERRNO_AND_VALUE(ParseKernelVersion("4.18.10")); - ASSERT_TRUE(v == KernelVersion({4, 18, 10})); - - v = ASSERT_NO_ERRNO_AND_VALUE(ParseKernelVersion("4.0.10")); - ASSERT_TRUE(v == KernelVersion({4, 0, 10})); - - v = ASSERT_NO_ERRNO_AND_VALUE(ParseKernelVersion("4.0")); - ASSERT_TRUE(v == KernelVersion({4, 0, 0})); - - ASSERT_THAT(ParseKernelVersion("4.a"), PosixErrorIs(EINVAL, ::testing::_)); - ASSERT_THAT(ParseKernelVersion("3"), PosixErrorIs(EINVAL, ::testing::_)); - ASSERT_THAT(ParseKernelVersion(""), PosixErrorIs(EINVAL, ::testing::_)); - ASSERT_THAT(ParseKernelVersion("version 3.3.10"), - PosixErrorIs(EINVAL, ::testing::_)); -} - -TEST(MatchersTest, SyscallSucceeds) { - EXPECT_THAT(0, SyscallSucceeds()); - EXPECT_THAT(0L, SyscallSucceeds()); - - errno = 0; - EXPECT_THAT(-1, SyscallSucceeds()); - EXPECT_THAT(-1L, SyscallSucceeds()); - - errno = ENOMEM; - EXPECT_THAT(-1, Not(SyscallSucceeds())); - EXPECT_THAT(-1L, Not(SyscallSucceeds())); -} - -TEST(MatchersTest, SyscallSucceedsWithValue) { - EXPECT_THAT(0, SyscallSucceedsWithValue(0)); - EXPECT_THAT(1, SyscallSucceedsWithValue(Lt(3))); - EXPECT_THAT(-1, Not(SyscallSucceedsWithValue(Lt(3)))); - EXPECT_THAT(4, Not(SyscallSucceedsWithValue(Lt(3)))); - - // Non-int -1 - EXPECT_THAT(-1L, Not(SyscallSucceedsWithValue(0))); - - // Non-int, truncates to -1 if converted to int, with expected value - EXPECT_THAT(0xffffffffL, SyscallSucceedsWithValue(0xffffffffL)); - - // Non-int, truncates to -1 if converted to int, with monomorphic matcher - EXPECT_THAT(0xffffffffL, - SyscallSucceedsWithValue(TypedEq<long>(0xffffffffL))); - - // Non-int, truncates to -1 if converted to int, with polymorphic matcher - EXPECT_THAT(0xffffffffL, SyscallSucceedsWithValue(Gt(1))); -} - -TEST(MatchersTest, SyscallFails) { - EXPECT_THAT(0, Not(SyscallFails())); - EXPECT_THAT(0L, Not(SyscallFails())); - - errno = 0; - EXPECT_THAT(-1, Not(SyscallFails())); - EXPECT_THAT(-1L, Not(SyscallFails())); - - errno = ENOMEM; - EXPECT_THAT(-1, SyscallFails()); - EXPECT_THAT(-1L, SyscallFails()); -} - -TEST(MatchersTest, SyscallFailsWithErrno) { - EXPECT_THAT(0, Not(SyscallFailsWithErrno(EINVAL))); - EXPECT_THAT(0L, Not(SyscallFailsWithErrno(EINVAL))); - - errno = ENOMEM; - EXPECT_THAT(-1, Not(SyscallFailsWithErrno(EINVAL))); - EXPECT_THAT(-1L, Not(SyscallFailsWithErrno(EINVAL))); - - errno = EINVAL; - EXPECT_THAT(-1, SyscallFailsWithErrno(EINVAL)); - EXPECT_THAT(-1L, SyscallFailsWithErrno(EINVAL)); - - EXPECT_THAT(-1, SyscallFailsWithErrno(AnyOf(EINVAL, ENOMEM))); - EXPECT_THAT(-1L, SyscallFailsWithErrno(AnyOf(EINVAL, ENOMEM))); - - std::vector<int> expected_errnos({EINVAL, ENOMEM}); - errno = ENOMEM; - EXPECT_THAT(-1, SyscallFailsWithErrno(ElementOf(expected_errnos))); - EXPECT_THAT(-1L, SyscallFailsWithErrno(ElementOf(expected_errnos))); -} - -TEST(AllBitwiseCombinationsTest, NoArguments) { - EXPECT_THAT(AllBitwiseCombinations(), IsEmpty()); -} - -TEST(AllBitwiseCombinationsTest, EmptyList) { - EXPECT_THAT(AllBitwiseCombinations(List<int>{}), IsEmpty()); -} - -TEST(AllBitwiseCombinationsTest, SingleElementList) { - EXPECT_THAT(AllBitwiseCombinations(List<int>{5}), UnorderedElementsAre(5)); -} - -TEST(AllBitwiseCombinationsTest, SingleList) { - EXPECT_THAT(AllBitwiseCombinations(List<int>{0, 1, 2, 4}), - UnorderedElementsAre(0, 1, 2, 4)); -} - -TEST(AllBitwiseCombinationsTest, MultipleLists) { - EXPECT_THAT( - AllBitwiseCombinations(List<int>{0, 1, 2, 3}, List<int>{0, 4, 8, 12}), - UnorderedElementsAreArray( - {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15})); -} - -TEST(RandomizeBuffer, Works) { - const std::vector<char> original(4096); - std::vector<char> buffer = original; - RandomizeBuffer(buffer.data(), buffer.size()); - EXPECT_NE(buffer, original); -} - -// Enable comparison of vectors of iovec arrays for the following test. -MATCHER_P(IovecsListEq, expected, "") { - if (arg.size() != expected.size()) { - *result_listener << "sizes are different (actual: " << arg.size() - << ", expected: " << expected.size() << ")"; - return false; - } - - for (uint64_t i = 0; i < expected.size(); ++i) { - const std::vector<struct iovec>& actual_iovecs = arg[i]; - const std::vector<struct iovec>& expected_iovecs = expected[i]; - if (actual_iovecs.size() != expected_iovecs.size()) { - *result_listener << "iovec array size at position " << i - << " is different (actual: " << actual_iovecs.size() - << ", expected: " << expected_iovecs.size() << ")"; - return false; - } - - for (uint64_t j = 0; j < expected_iovecs.size(); ++j) { - const struct iovec& actual_iov = actual_iovecs[j]; - const struct iovec& expected_iov = expected_iovecs[j]; - if (actual_iov.iov_base != expected_iov.iov_base) { - *result_listener << "iovecs in array " << i << " at position " << j - << " are different (expected iov_base: " - << expected_iov.iov_base - << ", got: " << actual_iov.iov_base << ")"; - return false; - } - if (actual_iov.iov_len != expected_iov.iov_len) { - *result_listener << "iovecs in array " << i << " at position " << j - << " are different (expected iov_len: " - << expected_iov.iov_len - << ", got: " << actual_iov.iov_len << ")"; - return false; - } - } - } - - return true; -} - -// Verify empty iovec list generation. -TEST(GenerateIovecs, EmptyList) { - std::vector<char> buffer = {'a', 'b', 'c'}; - - EXPECT_THAT(GenerateIovecs(0, buffer.data(), buffer.size()), - IovecsListEq(std::vector<std::vector<struct iovec>>())); -} - -// Verify generating a single array of only one, partial, iovec. -TEST(GenerateIovecs, OneArray) { - std::vector<char> buffer = {'a', 'b', 'c'}; - - std::vector<std::vector<struct iovec>> expected; - struct iovec iov = {}; - iov.iov_base = buffer.data(); - iov.iov_len = 2; - expected.push_back(std::vector<struct iovec>({iov})); - EXPECT_THAT(GenerateIovecs(2, buffer.data(), buffer.size()), - IovecsListEq(expected)); -} - -// Verify that it wraps around after IOV_MAX iovecs. -TEST(GenerateIovecs, WrapsAtIovMax) { - std::vector<char> buffer = {'a', 'b', 'c'}; - - std::vector<std::vector<struct iovec>> expected; - struct iovec iov = {}; - iov.iov_base = buffer.data(); - iov.iov_len = buffer.size(); - expected.emplace_back(); - for (int i = 0; i < IOV_MAX; ++i) { - expected[0].push_back(iov); - } - iov.iov_len = 1; - expected.push_back(std::vector<struct iovec>({iov})); - - EXPECT_THAT( - GenerateIovecs(IOV_MAX * buffer.size() + 1, buffer.data(), buffer.size()), - IovecsListEq(expected)); -} - -} // namespace - -} // namespace testing -} // namespace gvisor diff --git a/test/util/thread_util.h b/test/util/thread_util.h deleted file mode 100644 index 923c4fe10..000000000 --- a/test/util/thread_util.h +++ /dev/null @@ -1,93 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_UTIL_THREAD_UTIL_H_ -#define GVISOR_TEST_UTIL_THREAD_UTIL_H_ - -#include <pthread.h> -#ifdef __linux__ -#include <sys/syscall.h> -#endif -#include <unistd.h> - -#include <functional> -#include <utility> - -#include "test/util/logging.h" - -namespace gvisor { -namespace testing { - -// ScopedThread is a minimal wrapper around pthreads. -// -// This is used in lieu of more complex mechanisms because it provides very -// predictable behavior (no messing with timers, etc.) The thread will -// automatically joined when it is destructed (goes out of scope), but can be -// joined manually as well. -class ScopedThread { - public: - // Constructs a thread that executes f exactly once. - explicit ScopedThread(std::function<void*()> f) : f_(std::move(f)) { - CreateThread(); - } - - explicit ScopedThread(const std::function<void()>& f) { - f_ = [=] { - f(); - return nullptr; - }; - CreateThread(); - } - - ScopedThread(const ScopedThread& other) = delete; - ScopedThread& operator=(const ScopedThread& other) = delete; - - // Joins the thread. - ~ScopedThread() { Join(); } - - // Waits until this thread has finished executing. Join is idempotent and may - // be called multiple times, however Join itself is not thread-safe. - void* Join() { - if (!joined_) { - TEST_PCHECK(pthread_join(pt_, &retval_) == 0); - joined_ = true; - } - return retval_; - } - - private: - void CreateThread() { - TEST_PCHECK_MSG(pthread_create( - &pt_, /* attr = */ nullptr, - +[](void* arg) -> void* { - return static_cast<ScopedThread*>(arg)->f_(); - }, - this) == 0, - "thread creation failed"); - } - - std::function<void*()> f_; - pthread_t pt_; - bool joined_ = false; - void* retval_ = nullptr; -}; - -#ifdef __linux__ -inline pid_t gettid() { return syscall(SYS_gettid); } -#endif - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_UTIL_THREAD_UTIL_H_ diff --git a/test/util/time_util.cc b/test/util/time_util.cc deleted file mode 100644 index 1ddfbfc9c..000000000 --- a/test/util/time_util.cc +++ /dev/null @@ -1,41 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/util/time_util.h" - -#include <sys/syscall.h> -#include <unistd.h> - -#include "absl/time/time.h" - -namespace gvisor { -namespace testing { - -void SleepSafe(absl::Duration duration) { - if (duration == absl::ZeroDuration()) { - return; - } - - struct timespec ts = absl::ToTimespec(duration); - int ret; - while (1) { - ret = syscall(__NR_nanosleep, &ts, &ts); - if (ret == 0 || (ret <= 0 && errno != EINTR)) { - break; - } - } -} - -} // namespace testing -} // namespace gvisor diff --git a/test/util/time_util.h b/test/util/time_util.h deleted file mode 100644 index f3ddc9fde..000000000 --- a/test/util/time_util.h +++ /dev/null @@ -1,29 +0,0 @@ -// Copyright 2019 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_UTIL_TIME_UTIL_H_ -#define GVISOR_TEST_UTIL_TIME_UTIL_H_ - -#include "absl/time/time.h" - -namespace gvisor { -namespace testing { - -// Sleep for at least the specified duration. Avoids glibc. -void SleepSafe(absl::Duration duration); - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_UTIL_TIME_UTIL_H_ diff --git a/test/util/timer_util.cc b/test/util/timer_util.cc deleted file mode 100644 index 43a26b0d3..000000000 --- a/test/util/timer_util.cc +++ /dev/null @@ -1,27 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/util/timer_util.h" - -namespace gvisor { -namespace testing { - -absl::Time Now(clockid_t id) { - struct timespec now; - TEST_PCHECK(clock_gettime(id, &now) == 0); - return absl::TimeFromTimespec(now); -} - -} // namespace testing -} // namespace gvisor diff --git a/test/util/timer_util.h b/test/util/timer_util.h deleted file mode 100644 index 31aea4fc6..000000000 --- a/test/util/timer_util.h +++ /dev/null @@ -1,74 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_UTIL_TIMER_UTIL_H_ -#define GVISOR_TEST_UTIL_TIMER_UTIL_H_ - -#include <errno.h> -#include <sys/time.h> - -#include <functional> - -#include "gmock/gmock.h" -#include "absl/time/time.h" -#include "test/util/cleanup.h" -#include "test/util/logging.h" -#include "test/util/posix_error.h" -#include "test/util/test_util.h" - -namespace gvisor { -namespace testing { - -// MonotonicTimer is a simple timer that uses a monotonic clock. -class MonotonicTimer { - public: - MonotonicTimer() {} - absl::Duration Duration() { - struct timespec ts; - TEST_CHECK(clock_gettime(CLOCK_MONOTONIC, &ts) == 0); - return absl::TimeFromTimespec(ts) - start_; - } - - void Start() { - struct timespec ts; - TEST_CHECK(clock_gettime(CLOCK_MONOTONIC, &ts) == 0); - start_ = absl::TimeFromTimespec(ts); - } - - protected: - absl::Time start_; -}; - -// Sets the given itimer and returns a cleanup function that restores the -// previous itimer when it goes out of scope. -inline PosixErrorOr<Cleanup> ScopedItimer(int which, - struct itimerval const& new_value) { - struct itimerval old_value; - int rc = setitimer(which, &new_value, &old_value); - MaybeSave(); - if (rc < 0) { - return PosixError(errno, "setitimer failed"); - } - return Cleanup(std::function<void(void)>([which, old_value] { - EXPECT_THAT(setitimer(which, &old_value, nullptr), SyscallSucceeds()); - })); -} - -// Returns the current time. -absl::Time Now(clockid_t id); - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_UTIL_TIMER_UTIL_H_ diff --git a/test/util/uid_util.cc b/test/util/uid_util.cc deleted file mode 100644 index b131b4b99..000000000 --- a/test/util/uid_util.cc +++ /dev/null @@ -1,44 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#include "test/util/posix_error.h" -#include "test/util/save_util.h" - -namespace gvisor { -namespace testing { - -PosixErrorOr<bool> IsRoot() { - uid_t ruid, euid, suid; - int rc = getresuid(&ruid, &euid, &suid); - MaybeSave(); - if (rc < 0) { - return PosixError(errno, "getresuid"); - } - if (ruid != 0 || euid != 0 || suid != 0) { - return false; - } - gid_t rgid, egid, sgid; - rc = getresgid(&rgid, &egid, &sgid); - MaybeSave(); - if (rc < 0) { - return PosixError(errno, "getresgid"); - } - if (rgid != 0 || egid != 0 || sgid != 0) { - return false; - } - return true; -} - -} // namespace testing -} // namespace gvisor diff --git a/test/util/uid_util.h b/test/util/uid_util.h deleted file mode 100644 index 2cd387fb0..000000000 --- a/test/util/uid_util.h +++ /dev/null @@ -1,29 +0,0 @@ -// Copyright 2018 The gVisor Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. - -#ifndef GVISOR_TEST_SYSCALLS_UID_UTIL_H_ -#define GVISOR_TEST_SYSCALLS_UID_UTIL_H_ - -#include "test/util/posix_error.h" - -namespace gvisor { -namespace testing { - -// Returns true if the caller's real/effective/saved user/group IDs are all 0. -PosixErrorOr<bool> IsRoot(); - -} // namespace testing -} // namespace gvisor - -#endif // GVISOR_TEST_SYSCALLS_UID_UTIL_H_ |