func handlePodVerify(w http.ResponseWriter, r *http.Request) {
	defer r.Body.Close()

	uuid, err := types.NewUUID(r.FormValue("uuid"))
	if err != nil {
		w.WriteHeader(http.StatusBadRequest)
		fmt.Fprintf(w, "uuid field missing or malformed: %v", err)
		return
	}

	content := r.FormValue("content")
	if content == "" {
		w.WriteHeader(http.StatusBadRequest)
		fmt.Fprintf(w, "content field missing")
		return
	}

	sig, err := base64.StdEncoding.DecodeString(r.FormValue("signature"))
	if err != nil {
		w.WriteHeader(http.StatusBadRequest)
		fmt.Fprintf(w, "signature field missing or corrupt: %v", err)
		return
	}

	h := hmac.New(sha512.New, hmacKey[:])
	h.Write((*uuid)[:])
	h.Write([]byte(content))

	if hmac.Equal(sig, h.Sum(nil)) {
		w.WriteHeader(http.StatusOK)
	} else {
		w.WriteHeader(http.StatusForbidden)
	}
}

func handleRegisterApp(w http.ResponseWriter, r *http.Request) {
	defer r.Body.Close()

	uuid, err := types.NewUUID(mux.Vars(r)["uuid"])
	if err != nil {
		w.WriteHeader(http.StatusBadRequest)
		fmt.Fprintf(w, "UUID is missing or malformed: %v", err)
		return
	}

	an := mux.Vars(r)["app"]
	if an == "" {
		w.WriteHeader(http.StatusBadRequest)
		fmt.Fprint(w, "app missing")
		return
	}

	im := &schema.ImageManifest{}
	if err := json.NewDecoder(r.Body).Decode(im); err != nil {
		w.WriteHeader(http.StatusBadRequest)
		fmt.Fprintf(w, "JSON-decoding failed: %v", err)
		return
	}

	err = pods.addApp(uuid, an, im)
	if err != nil {
		w.WriteHeader(http.StatusNotFound)
		fmt.Fprint(w, "Pod with given UUID not found")
		return
	}

	w.WriteHeader(http.StatusOK)
}

func handleRegisterPod(w http.ResponseWriter, r *http.Request) {
	defer r.Body.Close()

	uuid, err := types.NewUUID(mux.Vars(r)["uuid"])
	if err != nil {
		w.WriteHeader(http.StatusBadRequest)
		fmt.Fprintf(w, "UUID is missing or malformed: %v", err)
		return
	}

	token := queryValue(r.URL, "token")
	if token == "" {
		w.WriteHeader(http.StatusBadRequest)
		fmt.Fprint(w, "token missing")
		return
	}

	pm := &schema.PodManifest{}

	if err := json.NewDecoder(r.Body).Decode(pm); err != nil {
		w.WriteHeader(http.StatusBadRequest)
		fmt.Fprintf(w, "JSON-decoding failed: %v", err)
		return
	}

	pods.addPod(uuid, token, pm)

	w.WriteHeader(http.StatusOK)
}

func (s *v1AlphaAPIServer) InspectPod(ctx context.Context, request *v1alpha.InspectPodRequest) (*v1alpha.InspectPodResponse, error) {
	uuid, err := types.NewUUID(request.Id)
	if err != nil {
		log.Printf("Invalid pod id %q: %v", request.Id, err)
		return nil, err
	}

	p, err := getPod(uuid)
	if err != nil {
		log.Printf("Failed to get pod %q: %v", request.Id, err)
		return nil, err
	}
	defer p.Close()

	pod, _, err := getBasicPod(p)
	if err != nil {
		return nil, err
	}

	// Fill the extra pod info that is not available in ListPods().
	if err := fillAppInfo(s.store, p, pod); err != nil {
		return nil, err
	}

	return &v1alpha.InspectPodResponse{Pod: pod}, nil
}

func readUUIDFromFile(path string) (*types.UUID, error) {
	uuid, err := ioutil.ReadFile(path)
	if err != nil {
		return nil, err
	}
	uuid = bytes.TrimSpace(uuid)

	return types.NewUUID(string(uuid))
}

func TestImagePrepareRmIDRun(t *testing.T) {
	imageFile := patchTestACI(unreferencedACI, fmt.Sprintf("--name=%s", unreferencedApp))
	defer os.Remove(imageFile)
	ctx := testutils.NewRktRunCtx()
	defer ctx.Cleanup()

	cmd := fmt.Sprintf("%s --insecure-options=image fetch %s", ctx.Cmd(), imageFile)
	t.Logf("Fetching %s", imageFile)
	spawnAndWaitOrFail(t, cmd, true)

	// at this point we know that RKT_INSPECT_IMAGE env var is not empty
	referencedACI := os.Getenv("RKT_INSPECT_IMAGE")
	cmds := strings.Fields(ctx.Cmd())
	prepareCmd := exec.Command(cmds[0], cmds[1:]...)
	prepareCmd.Args = append(prepareCmd.Args, "--insecure-options=image", "prepare", referencedACI)
	output, err := prepareCmd.Output()
	if err != nil {
		t.Fatalf("Cannot read the output: %v", err)
	}

	podIDStr := strings.TrimSpace(string(output))
	podID, err := types.NewUUID(podIDStr)
	if err != nil {
		t.Fatalf("%q is not a valid UUID: %v", podIDStr, err)
	}

	t.Logf("Retrieving stage1 imageID")
	stage1ImageID, err := getImageID(ctx, stage1App)
	if err != nil {
		t.Fatalf("rkt didn't terminate correctly: %v", err)
	}

	t.Logf("Retrieving %s image ID", referencedApp)
	referencedImageID, err := getImageID(ctx, referencedApp)
	if err != nil {
		t.Fatalf("rkt didn't terminate correctly: %v", err)
	}

	t.Logf("Retrieving %s image ID", unreferencedApp)
	unreferencedImageID, err := getImageID(ctx, unreferencedApp)
	if err != nil {
		t.Fatalf("rkt didn't terminate correctly: %v", err)
	}

	t.Logf("Removing stage1 image (should work)")
	removeImage(t, ctx, stage1ImageID)

	t.Logf("Removing image for app %s (should work)", referencedApp)
	removeImage(t, ctx, referencedImageID)

	t.Logf("Removing image for app %s (should work)", unreferencedApp)
	removeImage(t, ctx, unreferencedImageID)

	cmd = fmt.Sprintf("%s run-prepared --mds-register=false %s", ctx.Cmd(), podID.String())
	t.Logf("Running %s", referencedACI)
	spawnAndWaitOrFail(t, cmd, true)
}

func TestPodStoreAddApp(t *testing.T) {
	ps, _, _, app := setupPodStoreTest(t)

	uuid2, err := types.NewUUID("fe305d54-75b4-431b-adb2-eb6b9e546013")
	if err != nil {
		panic("bad uuid literal")
	}

	im := &schema.ImageManifest{}
	if err = ps.addApp(uuid2, app, im); err != errPodNotFound {
		t.Errorf("addApp with unknown pod returned: %v", err)
	}
}

func validatePodMetadata(metadataURL string, pm *schema.PodManifest) results {
	r := results{}

	uuid, err := metadataGet(metadataURL, "/pod/uuid")
	if err != nil {
		return append(r, err)
	}

	_, err = types.NewUUID(string(uuid))
	if err != nil {
		return append(r, fmt.Errorf("malformed UUID returned (%v): %v", string(uuid), err))
	}

	return append(r, validatePodAnnotations(metadataURL, pm)...)
}

func runRktAndGetUUID(t *testing.T, rktCmd string) string {
	child := spawnOrFail(t, rktCmd)
	defer waitOrFail(t, child, true)

	result, out, err := expectRegexWithOutput(child, "\n[0-9a-f-]{36}")
	if err != nil || len(result) != 1 {
		t.Fatalf("Error: %v\nOutput: %v", err, out)
	}

	podIDStr := strings.TrimSpace(result[0])
	podID, err := types.NewUUID(podIDStr)
	if err != nil {
		t.Fatalf("%q is not a valid UUID: %v", podIDStr, err)
	}

	return podID.String()
}

func handleUnregisterPod(w http.ResponseWriter, r *http.Request) {
	defer r.Body.Close()

	uuid, err := types.NewUUID(mux.Vars(r)["uuid"])
	if err != nil {
		w.WriteHeader(http.StatusBadRequest)
		fmt.Fprintf(w, "UUID is missing or malformed: %v", err)
		return
	}

	if err := pods.remove(uuid); err != nil {
		w.WriteHeader(http.StatusNotFound)
		fmt.Fprint(w, err)
		return
	}

	w.WriteHeader(http.StatusOK)
}

func main() {
	flag.Parse()

	if !debug {
		log.SetOutput(ioutil.Discard)
	}

	podID, err := types.NewUUID(flag.Arg(0))
	if err != nil {
		fmt.Fprintln(os.Stderr, "UUID is missing or malformed")
		os.Exit(1)
	}

	if err := gcNetworking(podID); err != nil {
		fmt.Fprintln(os.Stderr, err)
		os.Exit(1)
	}
}

// walkPods iterates over the included directories calling function f for every pod found.
func walkPods(include includeMask, f func(*pod)) error {
	if err := initPods(); err != nil {
		return err
	}

	ls, err := listPods(include)
	if err != nil {
		return fmt.Errorf("failed to get pods: %v", err)
	}
	sort.Strings(ls)

	for _, uuid := range ls {
		u, err := types.NewUUID(uuid)
		if err != nil {
			stderr("Skipping %q: %v", uuid, err)
			continue
		}
		p, err := getPod(u)
		if err != nil {
			stderr("Skipping %q: %v", uuid, err)
			continue
		}

		// omit pods found in unrequested states
		// this is to cover a race between listPods finding the uuids and pod states changing
		// it's preferable to keep these operations lock-free, for example a `rkt gc` shouldn't block `rkt run`.
		if p.isEmbryo && include&includeEmbryoDir == 0 ||
			p.isExitedGarbage && include&includeExitedGarbageDir == 0 ||
			p.isGarbage && include&includeGarbageDir == 0 ||
			p.isPrepared && include&includePreparedDir == 0 ||
			((p.isPreparing || p.isAbortedPrepare) && include&includePrepareDir == 0) ||
			p.isRunning() && include&includeRunDir == 0 {
			p.Close()
			continue
		}

		f(p)
		p.Close()
	}

	return nil
}

func setupPodStoreTest(t *testing.T) (*podStore, *types.UUID, string, string) {
	ps := newPodStore()

	uuid, err := types.NewUUID("de305d54-75b4-431b-adb2-eb6b9e546013")
	if err != nil {
		panic("bad uuid literal")
	}

	ip := "1.2.3.4"
	app := "myapp"

	pm := &schema.PodManifest{}
	ps.addPod(uuid, ip, pm)

	im := &schema.ImageManifest{}
	err = ps.addApp(uuid, app, im)
	if err != nil {
		t.Fatalf("addApp failed with %v", err)
	}

	return ps, uuid, ip, app
}

// resolveUUID attempts to resolve the uuid specified as uuid against all pods present.
// An unambiguously matched uuid or nil is returned.
func resolveUUID(uuid string) (*types.UUID, error) {
	uuid = strings.ToLower(uuid)
	m, err := matchUUID(uuid)
	if err != nil {
		return nil, err
	}

	if len(m) == 0 {
		return nil, fmt.Errorf("no matches found for %q", uuid)
	}

	if len(m) > 1 {
		return nil, fmt.Errorf("ambiguous uuid, %d matches", len(m))
	}

	u, err := types.NewUUID(m[0])
	if err != nil {
		return nil, fmt.Errorf("invalid UUID: %v", err)
	}

	return u, nil
}

// newPod creates a new pod directory in the "preparing" state, allocating a unique uuid for it in the process.
// The returned pod is always left in an exclusively locked state (preparing is locked in the prepared directory)
// The pod must be closed using pod.Close()
func newPod() (*pod, error) {
	if err := initPods(); err != nil {
		return nil, err
	}

	p := &pod{
		createdByMe: true,
		isEmbryo:    true, // starts as an embryo, then xToPreparing locks, renames, and sets isPreparing
		// rest start false.
	}

	var err error
	p.uuid, err = types.NewUUID(uuid.New())
	if err != nil {
		return nil, fmt.Errorf("error creating UUID: %v", err)
	}

	err = os.Mkdir(p.embryoPath(), 0750)
	if err != nil {
		return nil, err
	}

	p.FileLock, err = lock.NewLock(p.embryoPath(), lock.Dir)
	if err != nil {
		os.Remove(p.embryoPath())
		return nil, err
	}

	err = p.xToPreparing()
	if err != nil {
		return nil, err
	}

	// At this point we we have:
	// /var/lib/rkt/pods/prepare/$uuid << exclusively locked to indicate "preparing"

	return p, nil
}

func runRktAndGetUUID(t *testing.T, rktCmd string) string {
	child, err := gexpect.Spawn(rktCmd)
	if err != nil {
		t.Fatalf("cannot exec rkt: %v", err)
	}

	result, out, err := expectRegexWithOutput(child, "\n[0-9a-f-]{36}")
	if err != nil || len(result) != 1 {
		t.Fatalf("Error: %v\nOutput: %v", err, out)
	}

	if err = child.Wait(); err != nil {
		t.Fatalf("rkt didn't terminate correctly: %v", err)
	}

	podIDStr := strings.TrimSpace(result[0])
	podID, err := types.NewUUID(podIDStr)
	if err != nil {
		t.Fatalf("%q is not a valid UUID: %v", podIDStr, err)
	}

	return podID.String()
}

//.........这里部分代码省略.........
		},
		{
			// Simple read after write with read-only volume mounted, no apps in pod manifest.
			// This should fail as the volume is read-only.
			"rkt-test-run-pod-manifest-vol-ro-no-app.aci",
			[]string{
				"--exec=/inspect --write-file --read-file --file-name=/dir1/file --content=baz",
				"--mounts=dir1,path=/dir1,readOnly=false",
			},
			&schema.PodManifest{
				Apps: []schema.RuntimeApp{
					{Name: baseAppName},
				},
				Volumes: []types.Volume{
					{"dir1", "host", tmpdir, &boolTrue},
				},
			},
			false,
			`Cannot write to file "/dir1/file": open /dir1/file: read-only file system`,
		},
	}

	for i, tt := range tests {
		patchTestACI(tt.imageName, tt.imagePatches...)
		hash := importImageAndFetchHash(t, ctx, tt.imageName)
		defer os.Remove(tt.imageName)

		tt.podManifest.ACKind = schema.PodManifestKind
		tt.podManifest.ACVersion = schema.AppContainerVersion

		imgName := types.MustACIdentifier(tt.imageName)
		imgID, err := types.NewHash(hash)
		if err != nil {
			t.Fatalf("Cannot generate types.Hash from %v: %v", hash, err)
		}

		for i := range tt.podManifest.Apps {
			ra := &tt.podManifest.Apps[i]
			ra.Image.Name = imgName
			ra.Image.ID = *imgID
		}
		manifestFile := generatePodManifestFile(t, tt.podManifest)
		defer os.Remove(manifestFile)

		// 1. Test 'rkt run'.
		runCmd := fmt.Sprintf("%s run --pod-manifest=%s", ctx.cmd(), manifestFile)
		t.Logf("Running 'run' test #%v: %v", i, runCmd)
		child, err := gexpect.Spawn(runCmd)
		if err != nil {
			t.Fatalf("Cannot exec rkt #%v: %v", i, err)
		}

		if tt.expectedResult != "" {
			if err := child.Expect(tt.expectedResult); err != nil {
				t.Fatalf("Expected %q but not found: %v", tt.expectedResult, err)
			}
		}
		if err := child.Wait(); err != nil {
			if tt.shouldSuccess {
				t.Fatalf("rkt didn't terminate correctly: %v", err)
			}
		}
		verifyHostFile(t, tmpdir, "file", i, tt.expectedResult)

		// 2. Test 'rkt prepare' + 'rkt run-prepared'.
		cmds := strings.Fields(ctx.cmd())
		prepareCmd := exec.Command(cmds[0], cmds[1:]...)
		prepareArg := fmt.Sprintf("--pod-manifest=%s", manifestFile)
		prepareCmd.Args = append(prepareCmd.Args, "--insecure-skip-verify", "prepare", prepareArg)
		output, err := prepareCmd.Output()
		if err != nil {
			t.Fatalf("Cannot read the output: %v", err)
		}

		podIDStr := strings.TrimSpace(string(output))
		podID, err := types.NewUUID(podIDStr)
		if err != nil {
			t.Fatalf("%q is not a valid UUID: %v", podIDStr, err)
		}

		runPreparedCmd := fmt.Sprintf("%s run-prepared %s", ctx.cmd(), podID.String())
		t.Logf("Running 'run' test #%v: %v", i, runPreparedCmd)
		child, err = gexpect.Spawn(runPreparedCmd)
		if err != nil {
			t.Fatalf("Cannot exec rkt #%v: %v", i, err)
		}

		if tt.expectedResult != "" {
			if err := child.Expect(tt.expectedResult); err != nil {
				t.Fatalf("Expected %q but not found: %v", tt.expectedResult, err)
			}
		}
		if err := child.Wait(); err != nil {
			if tt.shouldSuccess {
				t.Fatalf("rkt didn't terminate correctly: %v", err)
			}
		}
		verifyHostFile(t, tmpdir, "file", i, tt.expectedResult)
	}
}

func stage1() int {
	uuid, err := types.NewUUID(flag.Arg(0))
	if err != nil {
		fmt.Fprintln(os.Stderr, "UUID is missing or malformed")
		return 1
	}

	root := "."
	p, err := LoadPod(root, uuid)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to load pod: %v\n", err)
		return 1
	}

	// set close-on-exec flag on RKT_LOCK_FD so it gets correctly closed when invoking
	// network plugins
	lfd, err := common.GetRktLockFD()
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to get rkt lock fd: %v\n", err)
		return 1
	}

	if err := sys.CloseOnExec(lfd, true); err != nil {
		fmt.Fprintf(os.Stderr, "Failed to set FD_CLOEXEC on rkt lock: %v\n", err)
		return 1
	}

	mirrorLocalZoneInfo(p.Root)

	if privNet.Any() {
		fps, err := forwardedPorts(p)
		if err != nil {
			fmt.Fprintln(os.Stderr, err.Error())
			return 6
		}

		n, err := networking.Setup(root, p.UUID, fps, privNet)
		if err != nil {
			fmt.Fprintf(os.Stderr, "Failed to setup network: %v\n", err)
			return 6
		}

		if err = n.Save(); err != nil {
			fmt.Fprintf(os.Stderr, "Failed to save networking state %v\n", err)
			n.Teardown()
			return 6
		}

		if len(mdsToken) > 0 {
			hostIP, err := n.GetDefaultHostIP()
			if err != nil {
				fmt.Fprintf(os.Stderr, "Failed to get default Host IP: %v\n", err)
				return 6
			}

			p.MetadataServiceURL = common.MetadataServicePublicURL(hostIP, mdsToken)
		}
	} else {
		if len(mdsToken) > 0 {
			p.MetadataServiceURL = common.MetadataServicePublicURL(localhostIP, mdsToken)
		}
	}

	flavor, systemdStage1Version, err := p.getFlavor()
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to get stage1 flavor: %v\n", err)
		return 3
	}

	if err = p.WritePrepareAppTemplate(systemdStage1Version); err != nil {
		fmt.Fprintf(os.Stderr, "Failed to write prepare-app service template: %v\n", err)
		return 2
	}

	if err = p.PodToSystemd(interactive); err != nil {
		fmt.Fprintf(os.Stderr, "Failed to configure systemd: %v\n", err)
		return 2
	}

	args, env, err := getArgsEnv(p, flavor, systemdStage1Version, debug)
	if err != nil {
		fmt.Fprintf(os.Stderr, "%v\n", err)
		return 3
	}

	// create a separate mount namespace so the cgroup filesystems
	// are unmounted when exiting the pod
	if err := syscall.Unshare(syscall.CLONE_NEWNS); err != nil {
		log.Fatalf("error unsharing: %v", err)
	}

	// we recursively make / a "shared and slave" so mount events from the
	// new namespace don't propagate to the host namespace but mount events
	// from the host propagate to the new namespace and are forwarded to
	// its peer group
	// See https://www.kernel.org/doc/Documentation/filesystems/sharedsubtree.txt
	if err := syscall.Mount("", "/", "none", syscall.MS_REC|syscall.MS_SLAVE, ""); err != nil {
		log.Fatalf("error making / a slave mount: %v", err)
	}
	if err := syscall.Mount("", "/", "none", syscall.MS_REC|syscall.MS_SHARED, ""); err != nil {
//.........这里部分代码省略.........

func stage1() int {
	uuid, err := types.NewUUID(flag.Arg(0))
	if err != nil {
		fmt.Fprintln(os.Stderr, "UUID is missing or malformed")
		return 1
	}

	root := "."
	p, err := stage1commontypes.LoadPod(root, uuid)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to load pod: %v\n", err)
		return 1
	}

	// set close-on-exec flag on RKT_LOCK_FD so it gets correctly closed when invoking
	// network plugins
	lfd, err := common.GetRktLockFD()
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to get rkt lock fd: %v\n", err)
		return 1
	}

	if err := sys.CloseOnExec(lfd, true); err != nil {
		fmt.Fprintf(os.Stderr, "Failed to set FD_CLOEXEC on rkt lock: %v\n", err)
		return 1
	}

	mirrorLocalZoneInfo(p.Root)

	flavor, _, err := stage1initcommon.GetFlavor(p)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to get stage1 flavor: %v\n", err)
		return 3
	}

	var n *networking.Networking
	if netList.Contained() {
		fps, err := forwardedPorts(p)
		if err != nil {
			fmt.Fprintln(os.Stderr, err.Error())
			return 6
		}

		n, err = networking.Setup(root, p.UUID, fps, netList, localConfig, flavor)
		if err != nil {
			fmt.Fprintf(os.Stderr, "Failed to setup network: %v\n", err)
			return 6
		}

		if err = n.Save(); err != nil {
			fmt.Fprintf(os.Stderr, "Failed to save networking state %v\n", err)
			n.Teardown(flavor)
			return 6
		}

		if len(mdsToken) > 0 {
			hostIP, err := n.GetDefaultHostIP()
			if err != nil {
				fmt.Fprintf(os.Stderr, "Failed to get default Host IP: %v\n", err)
				return 6
			}

			p.MetadataServiceURL = common.MetadataServicePublicURL(hostIP, mdsToken)
		}
	} else {
		if flavor == "kvm" {
			fmt.Fprintf(os.Stderr, "Flavor kvm requires private network configuration (try --net).\n")
			return 6
		}
		if len(mdsToken) > 0 {
			p.MetadataServiceURL = common.MetadataServicePublicURL(localhostIP, mdsToken)
		}
	}

	if err = stage1initcommon.WriteDefaultTarget(p); err != nil {
		fmt.Fprintf(os.Stderr, "Failed to write default.target: %v\n", err)
		return 2
	}

	if err = stage1initcommon.WritePrepareAppTemplate(p); err != nil {
		fmt.Fprintf(os.Stderr, "Failed to write prepare-app service template: %v\n", err)
		return 2
	}

	if err := stage1initcommon.SetJournalPermissions(p); err != nil {
		fmt.Fprintf(os.Stderr, "Warning: error setting journal ACLs, you'll need root to read the pod journal: %v", err)
	}

	if flavor == "kvm" {
		if err := KvmPodToSystemd(p, n); err != nil {
			fmt.Fprintf(os.Stderr, "Failed to configure systemd for kvm: %v\n", err)
			return 2
		}
	}

	if err = stage1initcommon.PodToSystemd(p, interactive, flavor, privateUsers); err != nil {
		fmt.Fprintf(os.Stderr, "Failed to configure systemd: %v\n", err)
		return 2
	}

//.........这里部分代码省略.........

func stage1() int {
	uuid, err := types.NewUUID(flag.Arg(0))
	if err != nil {
		fmt.Fprintln(os.Stderr, "UUID is missing or malformed")
		return 1
	}

	root := "."
	p, err := LoadPod(root, uuid)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to load pod: %v\n", err)
		return 1
	}

	// set close-on-exec flag on RKT_LOCK_FD so it gets correctly closed when invoking
	// network plugins
	lfd, err := common.GetRktLockFD()
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to get rkt lock fd: %v\n", err)
		return 1
	}

	if err := sys.CloseOnExec(lfd, true); err != nil {
		fmt.Fprintf(os.Stderr, "Failed to set FD_CLOEXEC on rkt lock: %v\n", err)
		return 1
	}

	mirrorLocalZoneInfo(p.Root)

	if privNet {
		fps, err := forwardedPorts(p)
		if err != nil {
			fmt.Fprintln(os.Stderr, err.Error())
			return 6
		}

		n, err := networking.Setup(root, p.UUID, fps)
		if err != nil {
			fmt.Fprintf(os.Stderr, "Failed to setup network: %v\n", err)
			return 6
		}
		defer n.Teardown()

		if err = n.Save(); err != nil {
			fmt.Fprintf(os.Stderr, "Failed to save networking state %v\n", err)
			return 6
		}

		p.MetadataServiceURL = common.MetadataServicePublicURL(n.GetDefaultHostIP())

		if err = registerPod(p, n.GetDefaultIP()); err != nil {
			fmt.Fprintf(os.Stderr, "Failed to register pod: %v\n", err)
			return 6
		}
		defer unregisterPod(p)
	}

	if err = p.PodToSystemd(interactive); err != nil {
		fmt.Fprintf(os.Stderr, "Failed to configure systemd: %v\n", err)
		return 2
	}

	args, env, err := getArgsEnv(p, debug)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to get execution parameters: %v\n", err)
		return 3
	}

	var execFn func() error

	if privNet {
		cmd := exec.Cmd{
			Path:   args[0],
			Args:   args,
			Stdin:  os.Stdin,
			Stdout: os.Stdout,
			Stderr: os.Stderr,
			Env:    env,
		}
		execFn = cmd.Run
	} else {
		execFn = func() error {
			return syscall.Exec(args[0], args, env)
		}
	}

	err = withClearedCloExec(lfd, execFn)
	if err != nil {
		fmt.Fprintf(os.Stderr, "Failed to execute nspawn: %v\n", err)
		return 5
	}

	return 0
}