Golang treestore.NewStore函数代码示例

func runGCImage(cmd *cobra.Command, args []string) (exit int) {
	s, err := imagestore.NewStore(storeDir())
	if err != nil {
		stderr.PrintE("cannot open store", err)
		return 1
	}

	ts, err := treestore.NewStore(treeStoreDir(), s)
	if err != nil {
		stderr.PrintE("cannot open store", err)
		return
	}

	if err := gcTreeStore(ts); err != nil {
		stderr.PrintE("failed to remove unreferenced treestores", err)
		return 1
	}

	if err := gcStore(s, flagImageGracePeriod); err != nil {
		stderr.Error(err)
		return 1
	}

	return 0
}

// deletePod cleans up files and resource associated with the pod
// pod must be under exclusive lock and be in either ExitedGarbage
// or Garbage state
func deletePod(p *pkgPod.Pod) {
	podState := p.State()
	if podState != pkgPod.ExitedGarbage && podState != pkgPod.Garbage {
		stderr.Panicf("logic error: deletePod called with non-garbage pod %q (status %q)", p.UUID, p.State())
	}

	if podState == pkgPod.ExitedGarbage {
		s, err := imagestore.NewStore(storeDir())
		if err != nil {
			stderr.PrintE("cannot open store", err)
			return
		}
		defer s.Close()

		ts, err := treestore.NewStore(treeStoreDir(), s)
		if err != nil {
			stderr.PrintE("cannot open store", err)
			return
		}

		if globalFlags.Debug {
			stage0.InitDebug()
		}

		if err := mountPodStage1(ts, p); err == nil {
			if err = stage0.GC(p.Path(), p.UUID); err != nil {
				stderr.PrintE(fmt.Sprintf("problem performing stage1 GC on %q", p.UUID), err)
			}
			// an overlay fs can be mounted over itself, let's unmount it here
			// if we mounted it before to avoid problems when running
			// stage0.MountGC
			if p.UsesOverlay() {
				stage1Mnt := common.Stage1RootfsPath(p.Path())
				if err := syscall.Unmount(stage1Mnt, 0); err != nil {
					stderr.PrintE("error unmounting stage1", err)
				}
			}
		} else {
			stderr.PrintE("skipping stage1 GC", err)
		}

		// unmount all leftover mounts
		if err := stage0.MountGC(p.Path(), p.UUID.String()); err != nil {
			stderr.PrintE(fmt.Sprintf("GC of leftover mounts for pod %q failed", p.UUID), err)
			return
		}
	}

	if err := os.RemoveAll(p.Path()); err != nil {
		stderr.PrintE(fmt.Sprintf("unable to remove pod %q", p.UUID), err)
		os.Exit(254)
	}
}

// mountOverlay mounts the app from the overlay-rendered pod to the destination directory.
func mountOverlay(pod *pod, app *schema.RuntimeApp, dest string) error {
	if _, err := os.Stat(dest); err != nil {
		return err
	}

	s, err := imagestore.NewStore(getDataDir())
	if err != nil {
		return errwrap.Wrap(errors.New("cannot open store"), err)
	}

	ts, err := treestore.NewStore(treeStoreDir(), s)
	if err != nil {
		return errwrap.Wrap(errors.New("cannot open treestore"), err)
	}

	treeStoreID, err := pod.getAppTreeStoreID(app.Name)
	if err != nil {
		return err
	}
	lower := ts.GetRootFS(treeStoreID)
	imgDir := filepath.Join(filepath.Join(pod.path(), "overlay"), treeStoreID)
	if _, err := os.Stat(imgDir); err != nil {
		return err
	}
	upper := filepath.Join(imgDir, "upper", app.Name.String())
	if _, err := os.Stat(upper); err != nil {
		return err
	}
	work := filepath.Join(imgDir, "work", app.Name.String())
	if _, err := os.Stat(work); err != nil {
		return err
	}

	if err := overlay.Mount(&overlay.MountCfg{lower, upper, work, dest, ""}); err != nil {
		return errwrap.Wrap(errors.New("problem mounting overlayfs directory"), err)
	}

	return nil
}

func runRun(cmd *cobra.Command, args []string) (exit int) {
	privateUsers := user.NewBlankUidRange()
	err := parseApps(&rktApps, args, cmd.Flags(), true)
	if err != nil {
		stderr.PrintE("error parsing app image arguments", err)
		return 1
	}

	if flagStoreOnly && flagNoStore {
		stderr.Print("both --store-only and --no-store specified")
		return 1
	}

	if flagPrivateUsers {
		if !common.SupportsUserNS() {
			stderr.Print("--private-users is not supported, kernel compiled without user namespace support")
			return 1
		}
		privateUsers.SetRandomUidRange(user.DefaultRangeCount)
	}

	if len(flagPorts) > 0 && flagNet.None() {
		stderr.Print("--port flag does not work with 'none' networking")
		return 1
	}
	if len(flagPorts) > 0 && flagNet.Host() {
		stderr.Print("--port flag does not work with 'host' networking")
		return 1
	}

	if flagMDSRegister && flagNet.None() {
		stderr.Print("--mds-register flag does not work with --net=none. Please use 'host', 'default' or an equivalent network")
		return 1
	}

	if len(flagPodManifest) > 0 && (len(flagPorts) > 0 || rktApps.Count() > 0 || flagStoreOnly || flagNoStore ||
		flagInheritEnv || !flagExplicitEnv.IsEmpty() || !flagEnvFromFile.IsEmpty() ||
		(*appsVolume)(&rktApps).String() != "" || (*appMount)(&rktApps).String() != "" || (*appExec)(&rktApps).String() != "" ||
		(*appUser)(&rktApps).String() != "" || (*appGroup)(&rktApps).String() != "" ||
		(*appCapsRetain)(&rktApps).String() != "" || (*appCapsRemove)(&rktApps).String() != "") {
		stderr.Print("conflicting flags set with --pod-manifest (see --help)")
		return 1
	}

	if flagInteractive && rktApps.Count() > 1 {
		stderr.Print("interactive option only supports one image")
		return 1
	}

	if rktApps.Count() < 1 && len(flagPodManifest) == 0 {
		stderr.Print("must provide at least one image or specify the pod manifest")
		return 1
	}

	s, err := imagestore.NewStore(storeDir())
	if err != nil {
		stderr.PrintE("cannot open store", err)
		return 1
	}

	ts, err := treestore.NewStore(treeStoreDir(), s)
	if err != nil {
		stderr.PrintE("cannot open treestore", err)
		return 1
	}

	config, err := getConfig()
	if err != nil {
		stderr.PrintE("cannot get configuration", err)
		return 1
	}

	s1img, err := getStage1Hash(s, ts, config)
	if err != nil {
		stderr.Error(err)
		return 1
	}

	fn := &image.Finder{
		S:                  s,
		Ts:                 ts,
		Ks:                 getKeystore(),
		Headers:            config.AuthPerHost,
		DockerAuth:         config.DockerCredentialsPerRegistry,
		InsecureFlags:      globalFlags.InsecureFlags,
		Debug:              globalFlags.Debug,
		TrustKeysFromHTTPS: globalFlags.TrustKeysFromHTTPS,

		StoreOnly: flagStoreOnly,
		NoStore:   flagNoStore,
		WithDeps:  true,
	}
	if err := fn.FindImages(&rktApps); err != nil {
		stderr.Error(err)
		return 1
	}

	p, err := newPod()
	if err != nil {
		stderr.PrintE("error creating new pod", err)
//.........这里部分代码省略.........

func runImageRender(cmd *cobra.Command, args []string) (exit int) {
	if len(args) != 2 {
		cmd.Usage()
		return 254
	}
	outputDir := args[1]

	s, err := imagestore.NewStore(storeDir())
	if err != nil {
		stderr.PrintE("cannot open store", err)
		return 254
	}

	ts, err := treestore.NewStore(treeStoreDir(), s)
	if err != nil {
		stderr.PrintE("cannot open store", err)
		return
	}

	key, err := getStoreKeyFromAppOrHash(s, args[0])
	if err != nil {
		stderr.Error(err)
		return 254
	}

	id, _, err := ts.Render(key, false)
	if err != nil {
		stderr.PrintE("error rendering ACI", err)
		return 254
	}
	if _, err := ts.Check(id); err != nil {
		stderr.Print("warning: tree cache is in a bad state. Rebuilding...")
		var err error
		if id, _, err = ts.Render(key, true); err != nil {
			stderr.PrintE("error rendering ACI", err)
			return 254
		}
	}

	if _, err := os.Stat(outputDir); err == nil {
		if !flagRenderOverwrite {
			stderr.Print("output directory exists (try --overwrite)")
			return 254
		}

		// don't allow the user to delete the root filesystem by mistake
		if outputDir == "/" {
			stderr.Print("this would delete your root filesystem. Refusing.")
			return 254
		}

		if err := os.RemoveAll(outputDir); err != nil {
			stderr.PrintE("error removing existing output dir", err)
			return 254
		}
	}
	rootfsOutDir := outputDir
	if !flagRenderRootfsOnly {
		if err := os.MkdirAll(outputDir, 0755); err != nil {
			stderr.PrintE("error creating output directory", err)
			return 254
		}
		rootfsOutDir = filepath.Join(rootfsOutDir, "rootfs")

		manifest, err := s.GetImageManifest(key)
		if err != nil {
			stderr.PrintE("error getting manifest", err)
			return 254
		}

		mb, err := json.Marshal(manifest)
		if err != nil {
			stderr.PrintE("error marshalling image manifest", err)
			return 254
		}

		if err := ioutil.WriteFile(filepath.Join(outputDir, "manifest"), mb, 0700); err != nil {
			stderr.PrintE("error writing image manifest", err)
			return 254
		}
	}

	cachedTreePath := ts.GetRootFS(id)
	if err := fileutil.CopyTree(cachedTreePath, rootfsOutDir, user.NewBlankUidRange()); err != nil {
		stderr.PrintE("error copying ACI rootfs", err)
		return 254
	}

	return 0
}

func runAppAdd(cmd *cobra.Command, args []string) (exit int) {
	if len(args) < 2 {
		stderr.Print("must provide the pod UUID and an IMAGEID")
		return 254
	}

	err := parseApps(&rktApps, args[1:], cmd.Flags(), true)
	if err != nil {
		stderr.PrintE("error parsing app image arguments", err)
		return 254
	}

	if rktApps.Count() > 1 {
		stderr.Print("must give only one app")
		return 254
	}

	p, err := pkgPod.PodFromUUIDString(getDataDir(), args[0])
	if err != nil {
		stderr.PrintE("problem retrieving pod", err)
		return 254
	}
	defer p.Close()

	if p.State() != pkgPod.Running {
		stderr.Printf("pod %q isn't currently running", p.UUID)
		return 254
	}

	if !p.IsSupervisorReady() {
		stderr.Printf("supervisor for pod %q is not yet ready", p.UUID)
		return 254
	}

	s, err := imagestore.NewStore(storeDir())
	if err != nil {
		stderr.PrintE("cannot open store", err)
		return 254
	}

	ts, err := treestore.NewStore(treeStoreDir(), s)
	if err != nil {
		stderr.PrintE("cannot open treestore", err)
		return 254
	}

	fn := &image.Finder{
		S:  s,
		Ts: ts,
		Ks: getKeystore(),

		StoreOnly: true,
		NoStore:   false,
	}

	img, err := fn.FindImage(args[1], "")
	if err != nil {
		stderr.PrintE("error finding images", err)
		return 254
	}

	podPID, err := p.ContainerPid1()
	if err != nil {
		stderr.PrintE(fmt.Sprintf("unable to determine the pid for pod %q", p.UUID), err)
		return 254
	}

	ccfg := stage0.CommonConfig{
		DataDir:   getDataDir(),
		Store:     s,
		TreeStore: ts,
		UUID:      p.UUID,
		Debug:     globalFlags.Debug,
	}

	rktgid, err := common.LookupGid(common.RktGroup)
	if err != nil {
		stderr.Printf("group %q not found, will use default gid when rendering images", common.RktGroup)
		rktgid = -1
	}

	cfg := stage0.AddConfig{
		CommonConfig: &ccfg,
		Image:        *img,
		Apps:         &rktApps,
		RktGid:       rktgid,
		UsesOverlay:  p.UsesOverlay(),
		PodPath:      p.Path(),
		PodPID:       podPID,
	}

	if globalFlags.Debug {
		stage0.InitDebug()
	}

	err = stage0.AddApp(cfg)
	if err != nil {
		stderr.PrintE("error adding app to pod", err)
		return 254
	}
//.........这里部分代码省略.........

func runRunPrepared(cmd *cobra.Command, args []string) (exit int) {
	if len(args) != 1 {
		cmd.Usage()
		return 254
	}

	p, err := pkgPod.PodFromUUIDString(getDataDir(), args[0])
	if err != nil {
		stderr.PrintE("problem retrieving pod", err)
		return 254
	}
	defer p.Close()

	s, err := imagestore.NewStore(storeDir())
	if err != nil {
		stderr.PrintE("cannot open store", err)
		return 254
	}

	ts, err := treestore.NewStore(treeStoreDir(), s)
	if err != nil {
		stderr.PrintE("cannot open treestore", err)
		return 254
	}

	if p.State() != pkgPod.Prepared {
		stderr.Printf("pod %q is not prepared", p.UUID)
		return 254
	}

	_, manifest, err := p.PodManifest()
	if err != nil {
		stderr.PrintE("cannot read pod manifest", err)
		return 254
	}

	if flagInteractive {
		if len(manifest.Apps) > 1 {
			stderr.Print("interactive option only supports pods with one app")
			return 254
		}
	}

	// Make sure we have a metadata service available before we move to
	// run state so that the user can rerun the command without needing
	// to prepare the image again.
	if flagMDSRegister {
		if err := stage0.CheckMdsAvailability(); err != nil {
			stderr.Error(err)
			return 254
		}
	}

	if err := p.ToRun(); err != nil {
		stderr.PrintE("cannot transition to run", err)
		return 254
	}

	lfd, err := p.Fd()
	if err != nil {
		stderr.PrintE("unable to get lock fd", err)
		return 254
	}

	rktgid, err := common.LookupGid(common.RktGroup)
	if err != nil {
		stderr.Printf("group %q not found, will use default gid when rendering images", common.RktGroup)
		rktgid = -1
	}

	ovlOk := true
	if err := common.PathSupportsOverlay(getDataDir()); err != nil {
		if oerr, ok := err.(common.ErrOverlayUnsupported); ok {
			stderr.Printf("disabling overlay support: %q", oerr.Error())
			ovlOk = false
		} else {
			stderr.PrintE("error determining overlay support", err)
			return 254
		}
	}

	ovlPrep := p.UsesOverlay()

	// should not happen, maybe the data directory moved from an overlay-enabled fs to another location
	// between prepare and run-prepared
	if ovlPrep && !ovlOk {
		stderr.Print("unable to run prepared overlay-enabled pod: overlay not supported")
		return 254
	}

	DNSConfMode, DNSConfig, HostsEntries, err := parseDNSFlags(flagHostsEntries, flagDNS, flagDNSSearch, flagDNSOpt, flagDNSDomain)
	if err != nil {
		stderr.PrintE("error with dns flags", err)
		return 254
	}

	rcfg := stage0.RunConfig{
		CommonConfig: &stage0.CommonConfig{
			DataDir:   getDataDir(),
			Store:     s,
//.........这里部分代码省略.........

func runFetch(cmd *cobra.Command, args []string) (exit int) {
	if err := parseApps(&rktApps, args, cmd.Flags(), false); err != nil {
		stderr.PrintE("unable to parse arguments", err)
		return 254
	}

	if rktApps.Count() < 1 {
		stderr.Print("must provide at least one image")
		return 254
	}

	if flagStoreOnly && flagNoStore {
		stderr.Print("both --store-only and --no-store specified")
		return 254
	}

	s, err := imagestore.NewStore(storeDir())
	if err != nil {
		stderr.PrintE("cannot open store", err)
		return 254
	}

	ts, err := treestore.NewStore(treeStoreDir(), s)
	if err != nil {
		stderr.PrintE("cannot open treestore", err)
		return 254
	}

	ks := getKeystore()
	config, err := getConfig()
	if err != nil {
		stderr.PrintE("cannot get configuration", err)
		return 254
	}
	ft := &image.Fetcher{
		S:                  s,
		Ts:                 ts,
		Ks:                 ks,
		Headers:            config.AuthPerHost,
		DockerAuth:         config.DockerCredentialsPerRegistry,
		InsecureFlags:      globalFlags.InsecureFlags,
		Debug:              globalFlags.Debug,
		TrustKeysFromHTTPS: globalFlags.TrustKeysFromHTTPS,

		StoreOnly: flagStoreOnly,
		NoStore:   flagNoStore,
		WithDeps:  true,
	}

	err = rktApps.Walk(func(app *apps.App) error {
		hash, err := ft.FetchImage(app.Image, app.Asc, app.ImType)
		if err != nil {
			return err
		}
		if !flagFullHash {
			hash = types.ShortHash(hash)
		}
		stdout.Print(hash)
		return nil
	})
	if err != nil {
		stderr.Error(err)
		return 254
	}

	return
}

func runEnter(cmd *cobra.Command, args []string) (exit int) {
	if len(args) < 1 {
		cmd.Usage()
		return 254
	}

	p, err := pkgPod.PodFromUUIDString(getDataDir(), args[0])
	if err != nil {
		stderr.PrintE("problem retrieving pod", err)
		return 254
	}
	defer p.Close()

	if p.State() != pkgPod.Running {
		stderr.Printf("pod %q isn't currently running", p.UUID)
		return 254
	}

	podPID, err := p.ContainerPid1()
	if err != nil {
		stderr.PrintE(fmt.Sprintf("unable to determine the pid for pod %q", p.UUID), err)
		return 254
	}

	appName, err := getAppName(p)
	if err != nil {
		stderr.PrintE("unable to determine app name", err)
		return 254
	}

	argv, err := getEnterArgv(p, args)
	if err != nil {
		stderr.PrintE("enter failed", err)
		return 254
	}

	s, err := imagestore.NewStore(storeDir())
	if err != nil {
		stderr.PrintE("cannot open store", err)
		return 254
	}

	ts, err := treestore.NewStore(treeStoreDir(), s)
	if err != nil {
		stderr.PrintE("cannot open store", err)
		return 254
	}

	stage1TreeStoreID, err := p.GetStage1TreeStoreID()
	if err != nil {
		stderr.PrintE("error getting stage1 treeStoreID", err)
		return 254
	}

	stage1RootFS := ts.GetRootFS(stage1TreeStoreID)

	if err = stage0.Enter(p.Path(), podPID, *appName, stage1RootFS, argv); err != nil {
		stderr.PrintE("enter failed", err)
		return 254
	}
	// not reached when stage0.Enter execs /enter
	return 0
}

func runAppSandbox(cmd *cobra.Command, args []string) int {
	s, err := imagestore.NewStore(storeDir())
	if err != nil {
		stderr.PrintE("cannot open store", err)
		return 1
	}

	ts, err := treestore.NewStore(treeStoreDir(), s)
	if err != nil {
		stderr.PrintE("cannot open treestore", err)
		return 1
	}

	config, err := getConfig()
	if err != nil {
		stderr.PrintE("cannot get configuration", err)
		return 1
	}

	s1img, err := getStage1Hash(s, ts, config)
	if err != nil {
		stderr.Error(err)
		return 1
	}

	p, err := pod.NewPod(getDataDir())
	if err != nil {
		stderr.PrintE("error creating new pod", err)
		return 1
	}

	if flagUUIDFileSave != "" {
		if err := pod.WriteUUIDToFile(p.UUID, flagUUIDFileSave); err != nil {
			stderr.PrintE("error saving pod UUID to file", err)
			return 1
		}
	}

	processLabel, mountLabel, err := label.InitLabels("/var/run/rkt/mcs", []string{})
	if err != nil {
		stderr.PrintE("error initialising SELinux", err)
		return 1
	}

	p.MountLabel = mountLabel
	cfg := stage0.CommonConfig{
		DataDir:      getDataDir(),
		MountLabel:   mountLabel,
		ProcessLabel: processLabel,
		Store:        s,
		TreeStore:    ts,
		Stage1Image:  *s1img,
		UUID:         p.UUID,
		Debug:        globalFlags.Debug,
		Mutable:      true,
	}

	ovlOk := true
	if err := common.PathSupportsOverlay(getDataDir()); err != nil {
		if oerr, ok := err.(common.ErrOverlayUnsupported); ok {
			stderr.Printf("disabling overlay support: %q", oerr.Error())
			ovlOk = false
		} else {
			stderr.PrintE("error determining overlay support", err)
			return 1
		}
	}

	useOverlay := !flagNoOverlay && ovlOk

	pcfg := stage0.PrepareConfig{
		CommonConfig:       &cfg,
		UseOverlay:         useOverlay,
		PrivateUsers:       user.NewBlankUidRange(),
		SkipTreeStoreCheck: globalFlags.InsecureFlags.SkipOnDiskCheck(),
		Apps:               &rktApps,
		Ports:              []types.ExposedPort(flagAppPorts),
		UserAnnotations:    parseAnnotations(&flagAnnotations),
		UserLabels:         parseLabels(&flagLabels),
	}

	if globalFlags.Debug {
		stage0.InitDebug()
	}

	keyLock, err := lock.SharedKeyLock(lockDir(), common.PrepareLock)
	if err != nil {
		stderr.PrintE("cannot get shared prepare lock", err)
		return 1
	}

	err = stage0.Prepare(pcfg, p.Path(), p.UUID)
	if err != nil {
		stderr.PrintE("error setting up stage0", err)
		keyLock.Close()
		return 1
	}
	keyLock.Close()

	// get the lock fd for run
//.........这里部分代码省略.........

func runPrepare(cmd *cobra.Command, args []string) (exit int) {
	var err error
	origStdout := os.Stdout
	privateUsers := user.NewBlankUidRange()
	if flagQuiet {
		if os.Stdout, err = os.Open("/dev/null"); err != nil {
			stderr.PrintE("unable to open /dev/null", err)
			return 254
		}
	}

	if flagStoreOnly && flagNoStore {
		stderr.Print("both --store-only and --no-store specified")
		return 254
	}

	if flagPrivateUsers {
		if !common.SupportsUserNS() {
			stderr.Print("--private-users is not supported, kernel compiled without user namespace support")
			return 254
		}
		privateUsers.SetRandomUidRange(user.DefaultRangeCount)
	}

	if err = parseApps(&rktApps, args, cmd.Flags(), true); err != nil {
		stderr.PrintE("error parsing app image arguments", err)
		return 254
	}

	if len(flagPodManifest) > 0 && (rktApps.Count() > 0 ||
		(*appsVolume)(&rktApps).String() != "" || (*appMount)(&rktApps).String() != "" ||
		len(flagPorts) > 0 || flagStoreOnly || flagNoStore ||
		flagInheritEnv || !flagExplicitEnv.IsEmpty() || !flagEnvFromFile.IsEmpty()) {
		stderr.Print("conflicting flags set with --pod-manifest (see --help)")
		return 254
	}

	if rktApps.Count() < 1 && len(flagPodManifest) == 0 {
		stderr.Print("must provide at least one image or specify the pod manifest")
		return 254
	}

	s, err := imagestore.NewStore(storeDir())
	if err != nil {
		stderr.PrintE("cannot open store", err)
		return 254
	}

	ts, err := treestore.NewStore(treeStoreDir(), s)
	if err != nil {
		stderr.PrintE("cannot open treestore", err)
		return 254
	}

	config, err := getConfig()
	if err != nil {
		stderr.PrintE("cannot get configuration", err)
		return 254
	}

	s1img, err := getStage1Hash(s, ts, config)
	if err != nil {
		stderr.Error(err)
		return 254
	}

	fn := &image.Finder{
		S:                  s,
		Ts:                 ts,
		Ks:                 getKeystore(),
		Headers:            config.AuthPerHost,
		DockerAuth:         config.DockerCredentialsPerRegistry,
		InsecureFlags:      globalFlags.InsecureFlags,
		Debug:              globalFlags.Debug,
		TrustKeysFromHTTPS: globalFlags.TrustKeysFromHTTPS,

		StoreOnly: flagStoreOnly,
		NoStore:   flagNoStore,
		WithDeps:  true,
	}
	if err := fn.FindImages(&rktApps); err != nil {
		stderr.PrintE("error finding images", err)
		return 254
	}

	p, err := pkgPod.NewPod(getDataDir())
	if err != nil {
		stderr.PrintE("error creating new pod", err)
		return 254
	}

	cfg := stage0.CommonConfig{
		DataDir:     getDataDir(),
		Store:       s,
		TreeStore:   ts,
		Stage1Image: *s1img,
		UUID:        p.UUID,
		Debug:       globalFlags.Debug,
	}

//.........这里部分代码省略.........

func runRunPrepared(cmd *cobra.Command, args []string) (exit int) {
	if len(args) != 1 {
		cmd.Usage()
		return 1
	}

	p, err := getPodFromUUIDString(args[0])
	if err != nil {
		stderr.PrintE("problem retrieving pod", err)
		return 1
	}
	defer p.Close()

	s, err := imagestore.NewStore(storeDir())
	if err != nil {
		stderr.PrintE("cannot open store", err)
		return 1
	}

	ts, err := treestore.NewStore(treeStoreDir(), s)
	if err != nil {
		stderr.PrintE("cannot open treestore", err)
		return 1
	}

	if !p.isPrepared {
		stderr.Printf("pod %q is not prepared", p.uuid)
		return 1
	}

	if flagInteractive {
		ac, err := p.getAppCount()
		if err != nil {
			stderr.PrintE("cannot get pod's app count", err)
			return 1
		}
		if ac > 1 {
			stderr.Print("interactive option only supports pods with one app")
			return 1
		}
	}

	// Make sure we have a metadata service available before we move to
	// run state so that the user can rerun the command without needing
	// to prepare the image again.
	if flagMDSRegister {
		if err := stage0.CheckMdsAvailability(); err != nil {
			stderr.Error(err)
			return 1
		}
	}

	if err := p.xToRun(); err != nil {
		stderr.PrintE("cannot transition to run", err)
		return 1
	}

	lfd, err := p.Fd()
	if err != nil {
		stderr.PrintE("unable to get lock fd", err)
		return 1
	}

	apps, err := p.getApps()
	if err != nil {
		stderr.PrintE("unable to get app list", err)
		return 1
	}

	rktgid, err := common.LookupGid(common.RktGroup)
	if err != nil {
		stderr.Printf("group %q not found, will use default gid when rendering images", common.RktGroup)
		rktgid = -1
	}

	rcfg := stage0.RunConfig{
		CommonConfig: &stage0.CommonConfig{
			Store:     s,
			TreeStore: ts,
			UUID:      p.uuid,
			Debug:     globalFlags.Debug,
		},
		Net:         flagNet,
		LockFd:      lfd,
		Interactive: flagInteractive,
		DNS:         flagDNS,
		DNSSearch:   flagDNSSearch,
		DNSOpt:      flagDNSOpt,
		MDSRegister: flagMDSRegister,
		Apps:        apps,
		RktGid:      rktgid,
		Hostname:    flagHostname,
	}
	if globalFlags.Debug {
		stage0.InitDebug()
	}
	stage0.Run(rcfg, p.path(), getDataDir()) // execs, never returns
	return 1
}