diff --git a/libcontainer/mount/nodes/nodes.go b/libcontainer/mount/nodes/nodes.go index 14b6f5a..f8e6e97 100644 --- a/libcontainer/mount/nodes/nodes.go +++ b/libcontainer/mount/nodes/nodes.go @@ -14,12 +14,12 @@ import ( // Default list of device nodes to copy var DefaultNodes = []string{ - "null", - "zero", - "full", - "random", - "urandom", - "tty", + "/dev/null", + "/dev/zero", + "/dev/full", + "/dev/random", + "/dev/urandom", + "/dev/tty", } // CopyN copies the device node from the host into the rootfs @@ -39,7 +39,7 @@ func CopyN(rootfs string, nodesToCopy []string, shouldExist bool) error { // on the host system does not exist and the boolean flag is passed // an error will be returned func Copy(rootfs, node string, shouldExist bool) error { - stat, err := os.Stat(filepath.Join("/dev", node)) + stat, err := os.Stat(node) if err != nil { if os.IsNotExist(err) && !shouldExist { return nil @@ -48,27 +48,41 @@ func Copy(rootfs, node string, shouldExist bool) error { } var ( - dest = filepath.Join(rootfs, "dev", node) - st = stat.Sys().(*syscall.Stat_t) + dest = filepath.Join(rootfs, node) + st = stat.Sys().(*syscall.Stat_t) + parent = filepath.Dir(dest) ) + if err := os.MkdirAll(parent, 0755); err != nil { + return err + } + if err := system.Mknod(dest, st.Mode, int(st.Rdev)); err != nil && !os.IsExist(err) { return fmt.Errorf("mknod %s %s", node, err) } return nil } -func GetHostDeviceNodes() ([]string, error) { - files, err := ioutil.ReadDir("/dev") +func getNodes(path string) ([]string, error) { + out := []string{} + files, err := ioutil.ReadDir(path) if err != nil { return nil, err } - - out := []string{} for _, f := range files { - if f.Mode()&os.ModeDevice == os.ModeDevice { - out = append(out, f.Name()) + if f.IsDir() && f.Name() != "pts" && f.Name() != "shm" { + sub, err := getNodes(filepath.Join(path, f.Name())) + if err != nil { + return nil, err + } + out = append(out, sub...) + } else if f.Mode()&os.ModeDevice == os.ModeDevice { + out = append(out, filepath.Join(path, f.Name())) } } return out, nil } + +func GetHostDeviceNodes() ([]string, error) { + return getNodes("/dev") +}