func MakePrivate(mountPoint string) error {
mounted, err := mount.Mounted(mountPoint)
if err != nil {
return err
}
if !mounted {
if err := mount.Mount(mountPoint, mountPoint, "none", "bind,rw"); err != nil {
return err
}
}
return mount.ForceMount("", mountPoint, "none", "private")
}
// Test recursive bind mount works by default
func TestDockerRunWithVolumesIsRecursive(t *testing.T) {
tmpDir, err := ioutil.TempDir("", "docker_recursive_mount_test")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(tmpDir)
// Create a temporary tmpfs mount.
tmpfsDir := filepath.Join(tmpDir, "tmpfs")
if err := os.MkdirAll(tmpfsDir, 0777); err != nil {
t.Fatalf("failed to mkdir at %s - %s", tmpfsDir, err)
}
if err := mount.Mount("tmpfs", tmpfsDir, "tmpfs", ""); err != nil {
t.Fatalf("failed to create a tmpfs mount at %s - %s", tmpfsDir, err)
}
f, err := ioutil.TempFile(tmpfsDir, "touch-me")
if err != nil {
t.Fatal(err)
}
defer f.Close()
runCmd := exec.Command(dockerBinary, "run", "--name", "test-data", "--volume", fmt.Sprintf("%s:/tmp:ro", tmpDir), "busybox:latest", "ls", "/tmp/tmpfs")
out, stderr, exitCode, err := runCommandWithStdoutStderr(runCmd)
if err != nil && exitCode != 0 {
t.Fatal(out, stderr, err)
}
if !strings.Contains(out, filepath.Base(f.Name())) {
t.Fatal("Recursive bind mount test failed. Expected file not found")
}
deleteAllContainers()
logDone("run - volumes are bind mounted recuursively")
}