integration-cli/docker_cli_save_load_test.go - third_party/github.com/moby/moby - Git at Google

 package main

 import (
 	"encoding/json"
 	"fmt"
 	"io/ioutil"
 	"os"
 	"os/exec"
 	"path/filepath"
 	"reflect"
 	"regexp"
 	"sort"
 	"strings"
 	"time"

 	"github.com/docker/distribution/digest"
 	"github.com/docker/docker/pkg/integration/checker"
 	"github.com/go-check/check"
 )

 // save a repo using gz compression and try to load it using stdout
 func (s *DockerSuite) TestSaveXzAndLoadRepoStdout(c *check.C) {
 	testRequires(c, DaemonIsLinux)
 	name := "test-save-xz-and-load-repo-stdout"
 	dockerCmd(c, "run", "--name", name, "busybox", "true")

 	repoName := "foobar-save-load-test-xz-gz"
 	out, _ := dockerCmd(c, "commit", name, repoName)

 	dockerCmd(c, "inspect", repoName)

 	repoTarball, _, err := runCommandPipelineWithOutput(
 		exec.Command(dockerBinary, "save", repoName),
 		exec.Command("xz", "-c"),
 		exec.Command("gzip", "-c"))
 	c.Assert(err, checker.IsNil, check.Commentf("failed to save repo: %v %v", out, err))
 	deleteImages(repoName)

 	loadCmd := exec.Command(dockerBinary, "load")
 	loadCmd.Stdin = strings.NewReader(repoTarball)
 	out, _, err = runCommandWithOutput(loadCmd)
 	c.Assert(err, checker.NotNil, check.Commentf("expected error, but succeeded with no error and output: %v", out))

 	after, _, err := dockerCmdWithError("inspect", repoName)
 	c.Assert(err, checker.NotNil, check.Commentf("the repo should not exist: %v", after))
 }

 // save a repo using xz+gz compression and try to load it using stdout
 func (s *DockerSuite) TestSaveXzGzAndLoadRepoStdout(c *check.C) {
 	testRequires(c, DaemonIsLinux)
 	name := "test-save-xz-gz-and-load-repo-stdout"
 	dockerCmd(c, "run", "--name", name, "busybox", "true")

 	repoName := "foobar-save-load-test-xz-gz"
 	dockerCmd(c, "commit", name, repoName)

 	dockerCmd(c, "inspect", repoName)

 	out, _, err := runCommandPipelineWithOutput(
 		exec.Command(dockerBinary, "save", repoName),
 		exec.Command("xz", "-c"),
 		exec.Command("gzip", "-c"))
 	c.Assert(err, checker.IsNil, check.Commentf("failed to save repo: %v %v", out, err))

 	deleteImages(repoName)

 	loadCmd := exec.Command(dockerBinary, "load")
 	loadCmd.Stdin = strings.NewReader(out)
 	out, _, err = runCommandWithOutput(loadCmd)
 	c.Assert(err, checker.NotNil, check.Commentf("expected error, but succeeded with no error and output: %v", out))

 	after, _, err := dockerCmdWithError("inspect", repoName)
 	c.Assert(err, checker.NotNil, check.Commentf("the repo should not exist: %v", after))
 }

 func (s *DockerSuite) TestSaveSingleTag(c *check.C) {
 	testRequires(c, DaemonIsLinux)
 	repoName := "foobar-save-single-tag-test"
 	dockerCmd(c, "tag", "busybox:latest", fmt.Sprintf("%v:latest", repoName))

 	out, _ := dockerCmd(c, "images", "-q", "--no-trunc", repoName)
 	cleanedImageID := strings.TrimSpace(out)

 	out, _, err := runCommandPipelineWithOutput(
 		exec.Command(dockerBinary, "save", fmt.Sprintf("%v:latest", repoName)),
 		exec.Command("tar", "t"),
 		exec.Command("grep", "-E", fmt.Sprintf("(^repositories$|%v)", cleanedImageID)))
 	c.Assert(err, checker.IsNil, check.Commentf("failed to save repo with image ID and 'repositories' file: %s, %v", out, err))
 }

 func (s *DockerSuite) TestSaveCheckTimes(c *check.C) {
 	testRequires(c, DaemonIsLinux)
 	repoName := "busybox:latest"
 	out, _ := dockerCmd(c, "inspect", repoName)
 	data := []struct {
 		ID      string
 		Created time.Time
 	}{}
 	err := json.Unmarshal([]byte(out), &data)
 	c.Assert(err, checker.IsNil, check.Commentf("failed to marshal from %q: err %v", repoName, err))
 	c.Assert(len(data), checker.Not(checker.Equals), 0, check.Commentf("failed to marshal the data from %q", repoName))
 	tarTvTimeFormat := "2006-01-02 15:04"
 	out, _, err = runCommandPipelineWithOutput(
 		exec.Command(dockerBinary, "save", repoName),
 		exec.Command("tar", "tv"),
 		exec.Command("grep", "-E", fmt.Sprintf("%s %s", data[0].Created.Format(tarTvTimeFormat), digest.Digest(data[0].ID).Hex())))
 	c.Assert(err, checker.IsNil, check.Commentf("failed to save repo with image ID and 'repositories' file: %s, %v", out, err))
 }

 func (s *DockerSuite) TestSaveImageId(c *check.C) {
 	testRequires(c, DaemonIsLinux)
 	repoName := "foobar-save-image-id-test"
 	dockerCmd(c, "tag", "emptyfs:latest", fmt.Sprintf("%v:latest", repoName))

 	out, _ := dockerCmd(c, "images", "-q", "--no-trunc", repoName)
 	cleanedLongImageID := strings.TrimPrefix(strings.TrimSpace(out), "sha256:")

 	out, _ = dockerCmd(c, "images", "-q", repoName)
 	cleanedShortImageID := strings.TrimSpace(out)

 	// Make sure IDs are not empty
 	c.Assert(cleanedLongImageID, checker.Not(check.Equals), "", check.Commentf("Id should not be empty."))
 	c.Assert(cleanedShortImageID, checker.Not(check.Equals), "", check.Commentf("Id should not be empty."))

 	saveCmd := exec.Command(dockerBinary, "save", cleanedShortImageID)
 	tarCmd := exec.Command("tar", "t")

 	var err error
 	tarCmd.Stdin, err = saveCmd.StdoutPipe()
 	c.Assert(err, checker.IsNil, check.Commentf("cannot set stdout pipe for tar: %v", err))
 	grepCmd := exec.Command("grep", cleanedLongImageID)
 	grepCmd.Stdin, err = tarCmd.StdoutPipe()
 	c.Assert(err, checker.IsNil, check.Commentf("cannot set stdout pipe for grep: %v", err))

 	c.Assert(tarCmd.Start(), checker.IsNil, check.Commentf("tar failed with error: %v", err))
 	c.Assert(saveCmd.Start(), checker.IsNil, check.Commentf("docker save failed with error: %v", err))
 	defer func() {
 		saveCmd.Wait()
 		tarCmd.Wait()
 		dockerCmd(c, "rmi", repoName)
 	}()

 	out, _, err = runCommandWithOutput(grepCmd)

 	c.Assert(err, checker.IsNil, check.Commentf("failed to save repo with image ID: %s, %v", out, err))
 }

 // save a repo and try to load it using flags
 func (s *DockerSuite) TestSaveAndLoadRepoFlags(c *check.C) {
 	testRequires(c, DaemonIsLinux)
 	name := "test-save-and-load-repo-flags"
 	dockerCmd(c, "run", "--name", name, "busybox", "true")

 	repoName := "foobar-save-load-test"

 	deleteImages(repoName)
 	dockerCmd(c, "commit", name, repoName)

 	before, _ := dockerCmd(c, "inspect", repoName)

 	out, _, err := runCommandPipelineWithOutput(
 		exec.Command(dockerBinary, "save", repoName),
 		exec.Command(dockerBinary, "load"))
 	c.Assert(err, checker.IsNil, check.Commentf("failed to save and load repo: %s, %v", out, err))

 	after, _ := dockerCmd(c, "inspect", repoName)
 	c.Assert(before, checker.Equals, after, check.Commentf("inspect is not the same after a save / load"))
 }

 func (s *DockerSuite) TestSaveWithNoExistImage(c *check.C) {
 	testRequires(c, DaemonIsLinux)

 	imgName := "foobar-non-existing-image"

 	out, _, err := dockerCmdWithError("save", "-o", "test-img.tar", imgName)
 	c.Assert(err, checker.NotNil, check.Commentf("save image should fail for non-existing image"))
 	c.Assert(out, checker.Contains, fmt.Sprintf("No such image: %s", imgName))
 }

 func (s *DockerSuite) TestSaveMultipleNames(c *check.C) {
 	testRequires(c, DaemonIsLinux)
 	repoName := "foobar-save-multi-name-test"

 	// Make one image
 	dockerCmd(c, "tag", "emptyfs:latest", fmt.Sprintf("%v-one:latest", repoName))

 	// Make two images
 	dockerCmd(c, "tag", "emptyfs:latest", fmt.Sprintf("%v-two:latest", repoName))

 	out, _, err := runCommandPipelineWithOutput(
 		exec.Command(dockerBinary, "save", fmt.Sprintf("%v-one", repoName), fmt.Sprintf("%v-two:latest", repoName)),
 		exec.Command("tar", "xO", "repositories"),
 		exec.Command("grep", "-q", "-E", "(-one|-two)"),
 	)
 	c.Assert(err, checker.IsNil, check.Commentf("failed to save multiple repos: %s, %v", out, err))
 }

 func (s *DockerSuite) TestSaveRepoWithMultipleImages(c *check.C) {
 	testRequires(c, DaemonIsLinux)
 	makeImage := func(from string, tag string) string {
 		var (
 			out string
 		)
 		out, _ = dockerCmd(c, "run", "-d", from, "true")
 		cleanedContainerID := strings.TrimSpace(out)

 		out, _ = dockerCmd(c, "commit", cleanedContainerID, tag)
 		imageID := strings.TrimSpace(out)
 		return imageID
 	}

 	repoName := "foobar-save-multi-images-test"
 	tagFoo := repoName + ":foo"
 	tagBar := repoName + ":bar"

 	idFoo := makeImage("busybox:latest", tagFoo)
 	idBar := makeImage("busybox:latest", tagBar)

 	deleteImages(repoName)

 	// create the archive
 	out, _, err := runCommandPipelineWithOutput(
 		exec.Command(dockerBinary, "save", repoName, "busybox:latest"),
 		exec.Command("tar", "t"))
 	c.Assert(err, checker.IsNil, check.Commentf("failed to save multiple images: %s, %v", out, err))

 	lines := strings.Split(strings.TrimSpace(out), "\n")
 	var actual []string
 	for _, l := range lines {
 		if regexp.MustCompile("^[a-f0-9]{64}\\.json$").Match([]byte(l)) {
 			actual = append(actual, strings.TrimSuffix(l, ".json"))
 		}
 	}

 	// make the list of expected layers
 	out = inspectField(c, "busybox:latest", "Id")
 	expected := []string{strings.TrimSpace(out), idFoo, idBar}

 	// prefixes are not in tar
 	for i := range expected {
 		expected[i] = digest.Digest(expected[i]).Hex()
 	}

 	sort.Strings(actual)
 	sort.Strings(expected)
 	c.Assert(actual, checker.DeepEquals, expected, check.Commentf("archive does not contains the right layers: got %v, expected %v, output: %q", actual, expected, out))
 }

 // Issue #6722 #5892 ensure directories are included in changes
 func (s *DockerSuite) TestSaveDirectoryPermissions(c *check.C) {
 	testRequires(c, DaemonIsLinux)
 	layerEntries := []string{"opt/", "opt/a/", "opt/a/b/", "opt/a/b/c"}
 	layerEntriesAUFS := []string{"./", ".wh..wh.aufs", ".wh..wh.orph/", ".wh..wh.plnk/", "opt/", "opt/a/", "opt/a/b/", "opt/a/b/c"}

 	name := "save-directory-permissions"
 	tmpDir, err := ioutil.TempDir("", "save-layers-with-directories")
 	c.Assert(err, checker.IsNil, check.Commentf("failed to create temporary directory: %s", err))
 	extractionDirectory := filepath.Join(tmpDir, "image-extraction-dir")
 	os.Mkdir(extractionDirectory, 0777)

 	defer os.RemoveAll(tmpDir)
 	_, err = buildImage(name,
 		`FROM busybox
 	RUN adduser -D user && mkdir -p /opt/a/b && chown -R user:user /opt/a
 	RUN touch /opt/a/b/c && chown user:user /opt/a/b/c`,
 		true)
 	c.Assert(err, checker.IsNil, check.Commentf("%v", err))

 	out, _, err := runCommandPipelineWithOutput(
 		exec.Command(dockerBinary, "save", name),
 		exec.Command("tar", "-xf", "-", "-C", extractionDirectory),
 	)
 	c.Assert(err, checker.IsNil, check.Commentf("failed to save and extract image: %s", out))

 	dirs, err := ioutil.ReadDir(extractionDirectory)
 	c.Assert(err, checker.IsNil, check.Commentf("failed to get a listing of the layer directories: %s", err))

 	found := false
 	for _, entry := range dirs {
 		var entriesSansDev []string
 		if entry.IsDir() {
 			layerPath := filepath.Join(extractionDirectory, entry.Name(), "layer.tar")

 			f, err := os.Open(layerPath)
 			c.Assert(err, checker.IsNil, check.Commentf("failed to open %s: %s", layerPath, err))

 			entries, err := listTar(f)
 			for _, e := range entries {
 				if !strings.Contains(e, "dev/") {
 					entriesSansDev = append(entriesSansDev, e)
 				}
 			}
 			c.Assert(err, checker.IsNil, check.Commentf("encountered error while listing tar entries: %s", err))

 			if reflect.DeepEqual(entriesSansDev, layerEntries) || reflect.DeepEqual(entriesSansDev, layerEntriesAUFS) {
 				found = true
 				break
 			}
 		}
 	}

 	c.Assert(found, checker.Equals, true, check.Commentf("failed to find the layer with the right content listing"))

 }

 // Test loading a weird image where one of the layers is of zero size.
 // The layer.tar file is actually zero bytes, no padding or anything else.
 // See issue: 18170
 func (s *DockerSuite) TestLoadZeroSizeLayer(c *check.C) {
 	testRequires(c, DaemonIsLinux)

 	dockerCmd(c, "load", "-i", "fixtures/load/emptyLayer.tar")
 }

 func (s *DockerSuite) TestSaveLoadParents(c *check.C) {
 	testRequires(c, DaemonIsLinux)

 	makeImage := func(from string, addfile string) string {
 		var (
 			out string
 		)
 		out, _ = dockerCmd(c, "run", "-d", from, "touch", addfile)
 		cleanedContainerID := strings.TrimSpace(out)

 		out, _ = dockerCmd(c, "commit", cleanedContainerID)
 		imageID := strings.TrimSpace(out)

 		dockerCmd(c, "rm", "-f", cleanedContainerID)
 		return imageID
 	}

 	idFoo := makeImage("busybox", "foo")
 	idBar := makeImage(idFoo, "bar")

 	tmpDir, err := ioutil.TempDir("", "save-load-parents")
 	c.Assert(err, checker.IsNil)
 	defer os.RemoveAll(tmpDir)

 	c.Log("tmpdir", tmpDir)

 	outfile := filepath.Join(tmpDir, "out.tar")

 	dockerCmd(c, "save", "-o", outfile, idBar, idFoo)
 	dockerCmd(c, "rmi", idBar)
 	dockerCmd(c, "load", "-i", outfile)

 	inspectOut := inspectField(c, idBar, "Parent")
 	c.Assert(inspectOut, checker.Equals, idFoo)

 	inspectOut = inspectField(c, idFoo, "Parent")
 	c.Assert(inspectOut, checker.Equals, "")
 }

 func (s *DockerSuite) TestSaveLoadNoTag(c *check.C) {
 	testRequires(c, DaemonIsLinux)

 	name := "saveloadnotag"

 	_, err := buildImage(name, "FROM busybox\nENV foo=bar", true)
 	c.Assert(err, checker.IsNil, check.Commentf("%v", err))

 	id := inspectField(c, name, "Id")

 	// Test to make sure that save w/o name just shows imageID during load
 	out, _, err := runCommandPipelineWithOutput(
 		exec.Command(dockerBinary, "save", id),
 		exec.Command(dockerBinary, "load"))
 	c.Assert(err, checker.IsNil, check.Commentf("failed to save and load repo: %s, %v", out, err))

 	// Should not show 'name' but should show the image ID during the load
 	c.Assert(out, checker.Not(checker.Contains), "Loaded image: ")
 	c.Assert(out, checker.Contains, "Loaded image ID:")
 	c.Assert(out, checker.Contains, id)

 	// Test to make sure that save by name shows that name during load
 	out, _, err = runCommandPipelineWithOutput(
 		exec.Command(dockerBinary, "save", name),
 		exec.Command(dockerBinary, "load"))
 	c.Assert(err, checker.IsNil, check.Commentf("failed to save and load repo: %s, %v", out, err))
 	c.Assert(out, checker.Contains, "Loaded image: "+name+":latest")
 	c.Assert(out, checker.Not(checker.Contains), "Loaded image ID:")
 }
	package main

	import (
	"encoding/json"
	"fmt"
	"io/ioutil"
	"os"
	"os/exec"
	"path/filepath"
	"reflect"
	"regexp"
	"sort"
	"strings"
	"time"

	"github.com/docker/distribution/digest"
	"github.com/docker/docker/pkg/integration/checker"
	"github.com/go-check/check"
	)

	// save a repo using gz compression and try to load it using stdout
	func (s DockerSuite) TestSaveXzAndLoadRepoStdout(c check.C) {
	testRequires(c, DaemonIsLinux)
	name := "test-save-xz-and-load-repo-stdout"
	dockerCmd(c, "run", "--name", name, "busybox", "true")

	repoName := "foobar-save-load-test-xz-gz"
	out, _ := dockerCmd(c, "commit", name, repoName)

	dockerCmd(c, "inspect", repoName)

	repoTarball, _, err := runCommandPipelineWithOutput(
	exec.Command(dockerBinary, "save", repoName),
	exec.Command("xz", "-c"),
	exec.Command("gzip", "-c"))
	c.Assert(err, checker.IsNil, check.Commentf("failed to save repo: %v %v", out, err))
	deleteImages(repoName)

	loadCmd := exec.Command(dockerBinary, "load")
	loadCmd.Stdin = strings.NewReader(repoTarball)
	out, _, err = runCommandWithOutput(loadCmd)
	c.Assert(err, checker.NotNil, check.Commentf("expected error, but succeeded with no error and output: %v", out))

	after, _, err := dockerCmdWithError("inspect", repoName)
	c.Assert(err, checker.NotNil, check.Commentf("the repo should not exist: %v", after))
	}

	// save a repo using xz+gz compression and try to load it using stdout
	func (s DockerSuite) TestSaveXzGzAndLoadRepoStdout(c check.C) {
	testRequires(c, DaemonIsLinux)
	name := "test-save-xz-gz-and-load-repo-stdout"
	dockerCmd(c, "run", "--name", name, "busybox", "true")

	repoName := "foobar-save-load-test-xz-gz"
	dockerCmd(c, "commit", name, repoName)

	dockerCmd(c, "inspect", repoName)

	out, _, err := runCommandPipelineWithOutput(
	exec.Command(dockerBinary, "save", repoName),
	exec.Command("xz", "-c"),
	exec.Command("gzip", "-c"))
	c.Assert(err, checker.IsNil, check.Commentf("failed to save repo: %v %v", out, err))

	deleteImages(repoName)

	loadCmd := exec.Command(dockerBinary, "load")
	loadCmd.Stdin = strings.NewReader(out)
	out, _, err = runCommandWithOutput(loadCmd)
	c.Assert(err, checker.NotNil, check.Commentf("expected error, but succeeded with no error and output: %v", out))

	after, _, err := dockerCmdWithError("inspect", repoName)
	c.Assert(err, checker.NotNil, check.Commentf("the repo should not exist: %v", after))
	}

	func (s DockerSuite) TestSaveSingleTag(c check.C) {
	testRequires(c, DaemonIsLinux)
	repoName := "foobar-save-single-tag-test"
	dockerCmd(c, "tag", "busybox:latest", fmt.Sprintf("%v:latest", repoName))

	out, _ := dockerCmd(c, "images", "-q", "--no-trunc", repoName)
	cleanedImageID := strings.TrimSpace(out)

	out, _, err := runCommandPipelineWithOutput(
	exec.Command(dockerBinary, "save", fmt.Sprintf("%v:latest", repoName)),
	exec.Command("tar", "t"),
	exec.Command("grep", "-E", fmt.Sprintf("(^repositories$\|%v)", cleanedImageID)))
	c.Assert(err, checker.IsNil, check.Commentf("failed to save repo with image ID and 'repositories' file: %s, %v", out, err))
	}

	func (s DockerSuite) TestSaveCheckTimes(c check.C) {
	testRequires(c, DaemonIsLinux)
	repoName := "busybox:latest"
	out, _ := dockerCmd(c, "inspect", repoName)
	data := []struct {
	ID string
	Created time.Time
	}{}
	err := json.Unmarshal([]byte(out), &data)
	c.Assert(err, checker.IsNil, check.Commentf("failed to marshal from %q: err %v", repoName, err))
	c.Assert(len(data), checker.Not(checker.Equals), 0, check.Commentf("failed to marshal the data from %q", repoName))
	tarTvTimeFormat := "2006-01-02 15:04"
	out, _, err = runCommandPipelineWithOutput(
	exec.Command(dockerBinary, "save", repoName),
	exec.Command("tar", "tv"),
	exec.Command("grep", "-E", fmt.Sprintf("%s %s", data[0].Created.Format(tarTvTimeFormat), digest.Digest(data[0].ID).Hex())))
	c.Assert(err, checker.IsNil, check.Commentf("failed to save repo with image ID and 'repositories' file: %s, %v", out, err))
	}

	func (s DockerSuite) TestSaveImageId(c check.C) {
	testRequires(c, DaemonIsLinux)
	repoName := "foobar-save-image-id-test"
	dockerCmd(c, "tag", "emptyfs:latest", fmt.Sprintf("%v:latest", repoName))

	out, _ := dockerCmd(c, "images", "-q", "--no-trunc", repoName)
	cleanedLongImageID := strings.TrimPrefix(strings.TrimSpace(out), "sha256:")

	out, _ = dockerCmd(c, "images", "-q", repoName)
	cleanedShortImageID := strings.TrimSpace(out)

	// Make sure IDs are not empty
	c.Assert(cleanedLongImageID, checker.Not(check.Equals), "", check.Commentf("Id should not be empty."))
	c.Assert(cleanedShortImageID, checker.Not(check.Equals), "", check.Commentf("Id should not be empty."))

	saveCmd := exec.Command(dockerBinary, "save", cleanedShortImageID)
	tarCmd := exec.Command("tar", "t")

	var err error
	tarCmd.Stdin, err = saveCmd.StdoutPipe()
	c.Assert(err, checker.IsNil, check.Commentf("cannot set stdout pipe for tar: %v", err))
	grepCmd := exec.Command("grep", cleanedLongImageID)
	grepCmd.Stdin, err = tarCmd.StdoutPipe()
	c.Assert(err, checker.IsNil, check.Commentf("cannot set stdout pipe for grep: %v", err))

	c.Assert(tarCmd.Start(), checker.IsNil, check.Commentf("tar failed with error: %v", err))
	c.Assert(saveCmd.Start(), checker.IsNil, check.Commentf("docker save failed with error: %v", err))
	defer func() {
	saveCmd.Wait()
	tarCmd.Wait()
	dockerCmd(c, "rmi", repoName)
	}()

	out, _, err = runCommandWithOutput(grepCmd)

	c.Assert(err, checker.IsNil, check.Commentf("failed to save repo with image ID: %s, %v", out, err))
	}

	// save a repo and try to load it using flags
	func (s DockerSuite) TestSaveAndLoadRepoFlags(c check.C) {
	testRequires(c, DaemonIsLinux)
	name := "test-save-and-load-repo-flags"
	dockerCmd(c, "run", "--name", name, "busybox", "true")

	repoName := "foobar-save-load-test"

	deleteImages(repoName)
	dockerCmd(c, "commit", name, repoName)

	before, _ := dockerCmd(c, "inspect", repoName)

	out, _, err := runCommandPipelineWithOutput(
	exec.Command(dockerBinary, "save", repoName),
	exec.Command(dockerBinary, "load"))
	c.Assert(err, checker.IsNil, check.Commentf("failed to save and load repo: %s, %v", out, err))

	after, _ := dockerCmd(c, "inspect", repoName)
	c.Assert(before, checker.Equals, after, check.Commentf("inspect is not the same after a save / load"))
	}

	func (s DockerSuite) TestSaveWithNoExistImage(c check.C) {
	testRequires(c, DaemonIsLinux)

	imgName := "foobar-non-existing-image"

	out, _, err := dockerCmdWithError("save", "-o", "test-img.tar", imgName)
	c.Assert(err, checker.NotNil, check.Commentf("save image should fail for non-existing image"))
	c.Assert(out, checker.Contains, fmt.Sprintf("No such image: %s", imgName))
	}

	func (s DockerSuite) TestSaveMultipleNames(c check.C) {
	testRequires(c, DaemonIsLinux)
	repoName := "foobar-save-multi-name-test"

	// Make one image
	dockerCmd(c, "tag", "emptyfs:latest", fmt.Sprintf("%v-one:latest", repoName))

	// Make two images
	dockerCmd(c, "tag", "emptyfs:latest", fmt.Sprintf("%v-two:latest", repoName))

	out, _, err := runCommandPipelineWithOutput(
	exec.Command(dockerBinary, "save", fmt.Sprintf("%v-one", repoName), fmt.Sprintf("%v-two:latest", repoName)),
	exec.Command("tar", "xO", "repositories"),
	exec.Command("grep", "-q", "-E", "(-one\|-two)"),
	)
	c.Assert(err, checker.IsNil, check.Commentf("failed to save multiple repos: %s, %v", out, err))
	}

	func (s DockerSuite) TestSaveRepoWithMultipleImages(c check.C) {
	testRequires(c, DaemonIsLinux)
	makeImage := func(from string, tag string) string {
	var (
	out string
	)
	out, _ = dockerCmd(c, "run", "-d", from, "true")
	cleanedContainerID := strings.TrimSpace(out)

	out, _ = dockerCmd(c, "commit", cleanedContainerID, tag)
	imageID := strings.TrimSpace(out)
	return imageID
	}

	repoName := "foobar-save-multi-images-test"
	tagFoo := repoName + ":foo"
	tagBar := repoName + ":bar"

	idFoo := makeImage("busybox:latest", tagFoo)
	idBar := makeImage("busybox:latest", tagBar)

	deleteImages(repoName)

	// create the archive
	out, _, err := runCommandPipelineWithOutput(
	exec.Command(dockerBinary, "save", repoName, "busybox:latest"),
	exec.Command("tar", "t"))
	c.Assert(err, checker.IsNil, check.Commentf("failed to save multiple images: %s, %v", out, err))

	lines := strings.Split(strings.TrimSpace(out), "\n")
	var actual []string
	for _, l := range lines {
	if regexp.MustCompile("^[a-f0-9]{64}\\.json$").Match([]byte(l)) {
	actual = append(actual, strings.TrimSuffix(l, ".json"))
	}
	}

	// make the list of expected layers
	out = inspectField(c, "busybox:latest", "Id")
	expected := []string{strings.TrimSpace(out), idFoo, idBar}

	// prefixes are not in tar
	for i := range expected {
	expected[i] = digest.Digest(expected[i]).Hex()
	}

	sort.Strings(actual)
	sort.Strings(expected)
	c.Assert(actual, checker.DeepEquals, expected, check.Commentf("archive does not contains the right layers: got %v, expected %v, output: %q", actual, expected, out))
	}

	// Issue #6722 #5892 ensure directories are included in changes
	func (s DockerSuite) TestSaveDirectoryPermissions(c check.C) {
	testRequires(c, DaemonIsLinux)
	layerEntries := []string{"opt/", "opt/a/", "opt/a/b/", "opt/a/b/c"}
	layerEntriesAUFS := []string{"./", ".wh..wh.aufs", ".wh..wh.orph/", ".wh..wh.plnk/", "opt/", "opt/a/", "opt/a/b/", "opt/a/b/c"}

	name := "save-directory-permissions"
	tmpDir, err := ioutil.TempDir("", "save-layers-with-directories")
	c.Assert(err, checker.IsNil, check.Commentf("failed to create temporary directory: %s", err))
	extractionDirectory := filepath.Join(tmpDir, "image-extraction-dir")
	os.Mkdir(extractionDirectory, 0777)

	defer os.RemoveAll(tmpDir)
	_, err = buildImage(name,
	`FROM busybox
	RUN adduser -D user && mkdir -p /opt/a/b && chown -R user:user /opt/a
	RUN touch /opt/a/b/c && chown user:user /opt/a/b/c`,
	true)
	c.Assert(err, checker.IsNil, check.Commentf("%v", err))

	out, _, err := runCommandPipelineWithOutput(
	exec.Command(dockerBinary, "save", name),
	exec.Command("tar", "-xf", "-", "-C", extractionDirectory),
	)
	c.Assert(err, checker.IsNil, check.Commentf("failed to save and extract image: %s", out))

	dirs, err := ioutil.ReadDir(extractionDirectory)
	c.Assert(err, checker.IsNil, check.Commentf("failed to get a listing of the layer directories: %s", err))

	found := false
	for _, entry := range dirs {
	var entriesSansDev []string
	if entry.IsDir() {
	layerPath := filepath.Join(extractionDirectory, entry.Name(), "layer.tar")

	f, err := os.Open(layerPath)
	c.Assert(err, checker.IsNil, check.Commentf("failed to open %s: %s", layerPath, err))

	entries, err := listTar(f)
	for _, e := range entries {
	if !strings.Contains(e, "dev/") {
	entriesSansDev = append(entriesSansDev, e)
	}
	}
	c.Assert(err, checker.IsNil, check.Commentf("encountered error while listing tar entries: %s", err))

	if reflect.DeepEqual(entriesSansDev, layerEntries) \|\| reflect.DeepEqual(entriesSansDev, layerEntriesAUFS) {
	found = true
	break
	}
	}
	}

	c.Assert(found, checker.Equals, true, check.Commentf("failed to find the layer with the right content listing"))

	}

	// Test loading a weird image where one of the layers is of zero size.
	// The layer.tar file is actually zero bytes, no padding or anything else.
	// See issue: 18170
	func (s DockerSuite) TestLoadZeroSizeLayer(c check.C) {
	testRequires(c, DaemonIsLinux)

	dockerCmd(c, "load", "-i", "fixtures/load/emptyLayer.tar")
	}

	func (s DockerSuite) TestSaveLoadParents(c check.C) {
	testRequires(c, DaemonIsLinux)

	makeImage := func(from string, addfile string) string {
	var (
	out string
	)
	out, _ = dockerCmd(c, "run", "-d", from, "touch", addfile)
	cleanedContainerID := strings.TrimSpace(out)

	out, _ = dockerCmd(c, "commit", cleanedContainerID)
	imageID := strings.TrimSpace(out)

	dockerCmd(c, "rm", "-f", cleanedContainerID)
	return imageID
	}

	idFoo := makeImage("busybox", "foo")
	idBar := makeImage(idFoo, "bar")

	tmpDir, err := ioutil.TempDir("", "save-load-parents")
	c.Assert(err, checker.IsNil)
	defer os.RemoveAll(tmpDir)

	c.Log("tmpdir", tmpDir)

	outfile := filepath.Join(tmpDir, "out.tar")

	dockerCmd(c, "save", "-o", outfile, idBar, idFoo)
	dockerCmd(c, "rmi", idBar)
	dockerCmd(c, "load", "-i", outfile)

	inspectOut := inspectField(c, idBar, "Parent")
	c.Assert(inspectOut, checker.Equals, idFoo)

	inspectOut = inspectField(c, idFoo, "Parent")
	c.Assert(inspectOut, checker.Equals, "")
	}

	func (s DockerSuite) TestSaveLoadNoTag(c check.C) {
	testRequires(c, DaemonIsLinux)

	name := "saveloadnotag"

	_, err := buildImage(name, "FROM busybox\nENV foo=bar", true)
	c.Assert(err, checker.IsNil, check.Commentf("%v", err))

	id := inspectField(c, name, "Id")

	// Test to make sure that save w/o name just shows imageID during load
	out, _, err := runCommandPipelineWithOutput(
	exec.Command(dockerBinary, "save", id),
	exec.Command(dockerBinary, "load"))
	c.Assert(err, checker.IsNil, check.Commentf("failed to save and load repo: %s, %v", out, err))

	// Should not show 'name' but should show the image ID during the load
	c.Assert(out, checker.Not(checker.Contains), "Loaded image: ")
	c.Assert(out, checker.Contains, "Loaded image ID:")
	c.Assert(out, checker.Contains, id)

	// Test to make sure that save by name shows that name during load
	out, _, err = runCommandPipelineWithOutput(
	exec.Command(dockerBinary, "save", name),
	exec.Command(dockerBinary, "load"))
	c.Assert(err, checker.IsNil, check.Commentf("failed to save and load repo: %s, %v", out, err))
	c.Assert(out, checker.Contains, "Loaded image: "+name+":latest")
	c.Assert(out, checker.Not(checker.Contains), "Loaded image ID:")
	}