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-rw-r--r--test/e2e/exec_test.go221
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diff --git a/test/e2e/exec_test.go b/test/e2e/exec_test.go
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-// Copyright 2018 The gVisor Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT 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/runsc/dockerutil"
-)
-
-func TestExecCapabilities(t *testing.T) {
- if err := dockerutil.Pull("alpine"); err != nil {
- t.Fatalf("docker pull failed: %v", err)
- }
- d := dockerutil.MakeDocker("exec-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")
- }
- capString := matches[1]
- t.Log("Root capabilities:", capString)
-
- // CAP_NET_RAW was in the capability set for the container, but was
- // removed. However, `exec` does not remove it. Verify that it's not
- // set in the container, then re-add it for comparison.
- caps, err := strconv.ParseUint(capString, 16, 64)
- if err != nil {
- t.Fatalf("failed to convert capabilities %q: %v", capString, err)
- }
- if caps&(1<<uint64(linux.CAP_NET_RAW)) != 0 {
- t.Fatalf("CAP_NET_RAW should be filtered, but is set in the container: %x", caps)
- }
- caps |= 1 << uint64(linux.CAP_NET_RAW)
- want := fmt.Sprintf("CapEff:\t%016x\n", caps)
-
- // 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)
- }
- 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 want := "BAR"; !strings.Contains(got, want) {
- t.Errorf("wanted exec output to contain %q, got %q", want, got)
- }
-}
-
-// 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-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)
- }
-}