diff options
Diffstat (limited to 'test/e2e')
| -rw-r--r-- | test/e2e/BUILD | 33 | ||||
| -rw-r--r-- | test/e2e/exec_test.go | 275 | ||||
| -rw-r--r-- | test/e2e/integration.go | 16 | ||||
| -rw-r--r-- | test/e2e/integration_test.go | 348 | ||||
| -rw-r--r-- | test/e2e/regression_test.go | 45 |
5 files changed, 717 insertions, 0 deletions
diff --git a/test/e2e/BUILD b/test/e2e/BUILD new file mode 100644 index 000000000..4fe03a220 --- /dev/null +++ b/test/e2e/BUILD @@ -0,0 +1,33 @@ +load("@io_bazel_rules_go//go:def.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", + ], + embed = [":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"], + importpath = "gvisor.dev/gvisor/test/integration", +) diff --git a/test/e2e/exec_test.go b/test/e2e/exec_test.go new file mode 100644 index 000000000..c962a3159 --- /dev/null +++ b/test/e2e/exec_test.go @@ -0,0 +1,275 @@ +// Copyright 2018 The gVisor Authors. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT 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", 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 new file mode 100644 index 000000000..4cd5f6c24 --- /dev/null +++ b/test/e2e/integration.go @@ -0,0 +1,16 @@ +// Copyright 2018 The gVisor Authors. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT 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 new file mode 100644 index 000000000..7cc0de129 --- /dev/null +++ b/test/e2e/integration_test.go @@ -0,0 +1,348 @@ +// Copyright 2018 The gVisor Authors. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT 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) + } + + 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 new file mode 100644 index 000000000..2488be383 --- /dev/null +++ b/test/e2e/regression_test.go @@ -0,0 +1,45 @@ +// 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() +} |