JohnHammond
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buildkit
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source: add git source 

Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>
docker-18.09
Tonis Tiigi 2017-07-07 14:35:10 -07:00
parent 88cbbe5345
commit b65989a5e4
93 changed files with 4613 additions and 54 deletions
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4
cache/manager.go vendored
View File

@ -291,3 +291,7 @@ func (cm *cacheManager) DiskUsage(ctx context.Context) ([]*client.UsageInfo, err
return du, nil
}
func IsLocked(err error) bool {
return errors.Cause(err) == errLocked
}

8
client/llb/llb.go
View File

@ -49,6 +49,14 @@ func Image(ref string) *State {
return Source("docker-image://" + ref) // controversial
}
func Git(remote, ref string) *State {
id := remote
if ref != "" {
id += "#" + ref
}
return Source("git://" + id)
}
type exec struct {
meta Meta
mounts []*mount

11
control/control_default.go
View File

@ -14,6 +14,7 @@ import (
"github.com/moby/buildkit/snapshot/blobmapping"
"github.com/moby/buildkit/source"
"github.com/moby/buildkit/source/containerimage"
"github.com/moby/buildkit/source/git"
)
type pullDeps struct {
@ -67,6 +68,16 @@ func defaultControllerOpts(root string, pd pullDeps) (*Opt, error) {
sm.Register(is)
gs, err := git.NewSource(git.Opt{
CacheAccessor: cm,
MetadataStore: md,
})
if err != nil {
return nil, err
}
sm.Register(gs)
return &Opt{
Snapshotter: snapshotter,
CacheManager: cm,

14
examples/buildkit/buildkit.go
View File

@ -11,12 +11,14 @@ import (
type buildOpt struct {
target string
containerd string
runc string
}
func main() {
var opt buildOpt
flag.StringVar(&opt.target, "target", "containerd", "target (standalone, containerd)")
flag.StringVar(&opt.containerd, "containerd", "master", "containerd version")
flag.StringVar(&opt.runc, "runc", "v1.0.0-rc3", "runc version")
flag.Parse()
bk := buildkit(opt)
@ -39,10 +41,12 @@ func goBuildBase() *llb.State {
}
func runc(version string) *llb.State {
return goBuildBase().
With(goFromGit("github.com/opencontainers/runc", version)).
Run(llb.Shlex("go build -o /usr/bin/runc ./")).
Root()
repo := "github.com/opencontainers/runc"
build := goBuildBase().
Run(llb.Shlexf("go build -o /usr/bin/runc %s", repo))
build.AddMount("/go/src/"+repo, llb.Git(repo, version))
return build.Root()
}
func containerd(version string) *llb.State {
@ -66,7 +70,7 @@ func buildkit(opt buildOpt) *llb.State {
r := llb.Image("docker.io/library/alpine:latest").With(
copyFrom(buildctl, "/bin/buildctl", "/bin/"),
copyFrom(runc("v1.0.0-rc3"), "/usr/bin/runc", "/bin/"),
copyFrom(runc(opt.runc), "/usr/bin/runc", "/bin/"),
)
if opt.target == "containerd" {

42
solver/exec.go
View File

@ -2,15 +2,11 @@ package solver
import (
"encoding/json"
"io"
"os"
"sort"
"github.com/moby/buildkit/cache"
"github.com/moby/buildkit/client"
"github.com/moby/buildkit/identity"
"github.com/moby/buildkit/solver/pb"
"github.com/moby/buildkit/util/progress"
"github.com/moby/buildkit/util/progress/logs"
"github.com/moby/buildkit/worker"
digest "github.com/opencontainers/go-digest"
"github.com/pkg/errors"
@ -102,9 +98,8 @@ func (e *execOp) Run(ctx context.Context, inputs []Reference) ([]Reference, erro
Cwd: e.op.Meta.Cwd,
}
stdout := newStreamWriter(ctx, 1)
stdout, stderr := logs.NewLogStreams(ctx)
defer stdout.Close()
stderr := newStreamWriter(ctx, 2)
defer stderr.Close()
if err := e.w.Exec(ctx, meta, root, mounts, stdout, stderr); err != nil {
@ -122,36 +117,3 @@ func (e *execOp) Run(ctx context.Context, inputs []Reference) ([]Reference, erro
}
return refs, nil
}
func newStreamWriter(ctx context.Context, stream int) io.WriteCloser {
pw, _, _ := progress.FromContext(ctx)
return &streamWriter{
pw: pw,
stream: stream,
}
}
type streamWriter struct {
pw progress.Writer
stream int
}
func (sw *streamWriter) Write(dt []byte) (int, error) {
sw.pw.Write(identity.NewID(), client.VertexLog{
Stream: sw.stream,
Data: append([]byte{}, dt...),
})
// TODO: remove debug
switch sw.stream {
case 1:
return os.Stdout.Write(dt)
case 2:
return os.Stderr.Write(dt)
default:
return 0, errors.Errorf("invalid stream %d", sw.stream)
}
}
func (sw *streamWriter) Close() error {
return sw.pw.Close()
}

2
solver/source.go
View File

@ -24,6 +24,7 @@ func newSourceOp(op *pb.Op_Source, sm *source.Manager) (Op, error) {
func (s *sourceOp) instance(ctx context.Context) (source.SourceInstance, error) {
s.mu.Lock()
defer s.mu.Unlock()
if s.src != nil {
return s.src, nil
}
@ -36,7 +37,6 @@ func (s *sourceOp) instance(ctx context.Context) (source.SourceInstance, error)
return nil, err
}
s.src = src
s.mu.Unlock()
return s.src, nil
}

11
source/containerimage/pull.go
View File

@ -1,7 +1,7 @@
package containerimage
import (
"context"
gocontext "context"
"encoding/json"
"net/http"
"sync"
@ -21,6 +21,7 @@ import (
"github.com/opencontainers/image-spec/identity"
ocispec "github.com/opencontainers/image-spec/specs-go/v1"
"github.com/pkg/errors"
"golang.org/x/net/context"
)
// TODO: break apart containerd specifics like contentstore so the resolver
@ -34,8 +35,8 @@ type SourceOpt struct {
}
type blobmapper interface {
GetBlob(ctx context.Context, key string) (digest.Digest, error)
SetBlob(ctx context.Context, key string, blob digest.Digest) error
GetBlob(ctx gocontext.Context, key string) (digest.Digest, error)
SetBlob(ctx gocontext.Context, key string, blob digest.Digest) error
}
type imageSource struct {
@ -74,7 +75,7 @@ type puller struct {
func (is *imageSource) Resolve(ctx context.Context, id source.Identifier) (source.SourceInstance, error) {
imageIdentifier, ok := id.(*source.ImageIdentifier)
if !ok {
return nil, errors.New("invalid identifier")
return nil, errors.Errorf("invalid image identifier %v", id)
}
p := &puller{
@ -128,7 +129,7 @@ func (p *puller) Snapshot(ctx context.Context) (cache.ImmutableRef, error) {
// and snapshots as 1) buildkit shouldn't have a dependency on contentstore
// or 2) cachemanager should manage the contentstore
handlers := []images.Handler{
images.HandlerFunc(func(ctx context.Context, desc ocispec.Descriptor) ([]ocispec.Descriptor, error) {
images.HandlerFunc(func(ctx gocontext.Context, desc ocispec.Descriptor) ([]ocispec.Descriptor, error) {
ongoing.add(desc)
return nil, nil
}),

338
source/git/gitsource.go Normal file
View File

@ -0,0 +1,338 @@
package git
import (
"bytes"
"io"
"os/exec"
"regexp"
"strings"
"github.com/BurntSushi/locker"
"github.com/Sirupsen/logrus"
"github.com/boltdb/bolt"
"github.com/moby/buildkit/cache"
"github.com/moby/buildkit/cache/metadata"
"github.com/moby/buildkit/snapshot"
"github.com/moby/buildkit/source"
"github.com/moby/buildkit/util/progress/logs"
"github.com/pkg/errors"
"golang.org/x/net/context"
)
var validHex = regexp.MustCompile(`^[a-f0-9]{40}$`)
type Opt struct {
CacheAccessor cache.Accessor
MetadataStore *metadata.Store
}
type gitSource struct {
md *metadata.Store
cache cache.Accessor
locker *locker.Locker
}
func NewSource(opt Opt) (source.Source, error) {
gs := &gitSource{
md: opt.MetadataStore,
cache: opt.CacheAccessor,
locker: locker.NewLocker(),
}
if err := exec.Command("git", "version").Run(); err != nil {
return nil, errors.Wrap(err, "failed to find git binary")
}
return gs, nil
}
func (gs *gitSource) ID() string {
return source.GitScheme
}
// needs to be called with repo lock
func (gs *gitSource) mountRemote(ctx context.Context, remote string) (target string, release func(), retErr error) {
remoteKey := "git-remote::" + remote
sis, err := gs.md.Search(remoteKey)
if err != nil {
return "", nil, errors.Wrapf(err, "failed to search metadata for %s", remote)
}
var remoteRef cache.MutableRef
for _, si := range sis {
remoteRef, err = gs.cache.GetMutable(ctx, si.ID())
if err != nil {
if cache.IsLocked(err) {
// should never really happen as no other function should access this metadata, but lets be graceful
logrus.Warnf("mutable ref for %s %s was locked: %v", remote, si.ID(), err)
continue
}
return "", nil, errors.Wrapf(err, "failed to get mutable ref for %s", remote)
}
break
}
initializeRepo := false
if remoteRef == nil {
remoteRef, err = gs.cache.New(ctx, nil)
if err != nil {
return "", nil, errors.Wrapf(err, "failed to create new mutable for %s", remote)
}
initializeRepo = true
}
releaseRemoteRef := func() {
s, err := remoteRef.Freeze() // TODO: remove this
if err == nil {
s.Release(context.TODO())
}
}
defer func() {
if retErr != nil && remoteRef != nil {
releaseRemoteRef()
}
}()
mount, err := remoteRef.Mount(ctx)
if err != nil {
return "", nil, err
}
lm := snapshot.LocalMounter(mount)
dir, err := lm.Mount()
if err != nil {
return "", nil, err
}
defer func() {
if retErr != nil {
lm.Unmount()
}
}()
if initializeRepo {
if _, err := gitWithinDir(ctx, dir, "", "init", "--bare"); err != nil {
return "", nil, errors.Wrapf(err, "failed to init repo at %s", dir)
}
if _, err := gitWithinDir(ctx, dir, "", "remote", "add", "origin", remote); err != nil {
return "", nil, errors.Wrapf(err, "failed add origin repo at %s", dir)
}
// same new remote metadata
si, _ := gs.md.Get(remoteRef.ID())
v, err := metadata.NewValue(remoteKey)
v.Index = remoteKey
if err != nil {
return "", nil, err
}
if err := si.Update(func(b *bolt.Bucket) error {
return si.SetValue(b, "git-repo", *v)
}); err != nil {
return "", nil, err
}
}
return dir, func() {
lm.Unmount()
releaseRemoteRef()
}, nil
}
type gitSourceHandler struct {
*gitSource
src *source.GitIdentifier
cacheKey string
}
func (gs *gitSource) Resolve(ctx context.Context, id source.Identifier) (source.SourceInstance, error) {
gitIdentifier, ok := id.(*source.GitIdentifier)
if !ok {
return nil, errors.Errorf("invalid git identifier %v", id)
}
return &gitSourceHandler{
src: gitIdentifier,
gitSource: gs,
}, nil
}
func (gs *gitSourceHandler) CacheKey(ctx context.Context) (string, error) {
remote := gs.src.Remote
ref := gs.src.Ref
if ref == "" {
ref = "master"
}
gs.locker.Lock(remote)
defer gs.locker.Unlock(remote)
if isCommitSHA(ref) {
gs.cacheKey = ref
return ref, nil
}
gitDir, unmountGitDir, err := gs.mountRemote(ctx, remote)
if err != nil {
return "", err
}
defer unmountGitDir()
// TODO: should we assume that remote tag is immutable? add a timer?
buf, err := gitWithinDir(ctx, gitDir, "", "ls-remote", "origin", ref)
if err != nil {
return "", errors.Wrapf(err, "failed to fetch remote %s", remote)
}
out := buf.String()
idx := strings.Index(out, "\t")
if idx == -1 {
return "", errors.Errorf("failed to find commit SHA from output: %s", string(out))
}
sha := string(out[:idx])
if !isCommitSHA(sha) {
return "", errors.Errorf("invalid commit sha %q", sha)
}
gs.cacheKey = ref
return sha, nil
}
func (gs *gitSourceHandler) Snapshot(ctx context.Context) (out cache.ImmutableRef, retErr error) {
ref := gs.src.Ref
if ref == "" {
ref = "master"
}
cacheKey := gs.cacheKey
if cacheKey == "" {
var err error
cacheKey, err = gs.CacheKey(ctx)
if err != nil {
return nil, err
}
}
snapshotKey := "git-snapshot::" + cacheKey + ":" + gs.src.Subdir
gs.locker.Lock(snapshotKey)
defer gs.locker.Unlock(snapshotKey)
sis, err := gs.md.Search(snapshotKey)
if err != nil {
return nil, errors.Wrapf(err, "failed to search metadata for %s", snapshotKey)
}
if len(sis) > 0 {
return gs.cache.Get(ctx, sis[0].ID())
}
gitDir, unmountGitDir, err := gs.mountRemote(ctx, gs.src.Remote)
if err != nil {
return nil, err
}
defer unmountGitDir()
doFetch := true
if isCommitSHA(ref) {
// skip fetch if commit already exists
if _, err := gitWithinDir(ctx, gitDir, "", "cat-file", "-e", ref+"^{commit}"); err == nil {
doFetch = false
}
}
if doFetch {
args := []string{"fetch", "--recurse-submodules=yes"}
if !isCommitSHA(ref) { // TODO: find a branch from ls-remote?
args = append(args, "--depth=1", "--no-tags")
}
args = append(args, "origin")
if !isCommitSHA(ref) {
args = append(args, ref+":"+ref)
// local refs are needed so they would be advertised on next fetches
// TODO: is there a better way to do this?
}
if _, err := gitWithinDir(ctx, gitDir, "", args...); err != nil {
return nil, errors.Wrapf(err, "failed to fetch remote %s", gs.src.Remote)
}
}
checkoutRef, err := gs.cache.New(ctx, nil)
if err != nil {
return nil, errors.Wrapf(err, "failed to create new mutable for %s", gs.src.Remote)
}
defer func() {
if retErr != nil && checkoutRef != nil {
s, err := checkoutRef.Freeze() // TODO: remove this
if err != nil {
s.Release(context.TODO())
}
}
}()
mount, err := checkoutRef.Mount(ctx)
if err != nil {
return nil, err
}
lm := snapshot.LocalMounter(mount)
checkoutDir, err := lm.Mount()
if err != nil {
return nil, err
}
_, err = gitWithinDir(ctx, gitDir, checkoutDir, "checkout", ref, "--", ".")
lm.Unmount()
if err != nil {
return nil, errors.Wrapf(err, "failed to checkout remote %s", gs.src.Remote)
}
snap, err := checkoutRef.ReleaseAndCommit(ctx)
if err != nil {
return nil, err
}
checkoutRef = nil
defer func() {
if retErr != nil {
snap.Release(context.TODO())
}
}()
si, _ := gs.md.Get(snap.ID())
v, err := metadata.NewValue(snapshotKey)
v.Index = snapshotKey
if err != nil {
return nil, err
}
if err := si.Update(func(b *bolt.Bucket) error {
return si.SetValue(b, "git-snapshot", *v)
}); err != nil {
return nil, err
}
return snap, nil
}
func isCommitSHA(str string) bool {
return validHex.MatchString(str)
}
func gitWithinDir(ctx context.Context, gitDir, workDir string, args ...string) (*bytes.Buffer, error) {
a := []string{"--git-dir", gitDir}
if workDir != "" {
a = append(a, "--work-tree", workDir)
}
return git(ctx, append(a, args...)...)
}
func git(ctx context.Context, args ...string) (*bytes.Buffer, error) {
stdout, stderr := logs.NewLogStreams(ctx)
defer stdout.Close()
defer stderr.Close()
cmd := exec.CommandContext(ctx, "git", args...)
buf := bytes.NewBuffer(nil)
cmd.Stdout = io.MultiWriter(stdout, buf)
cmd.Stderr = stderr
return buf, cmd.Run()
}

215
source/git/gitsource_test.go Normal file
View File

@ -0,0 +1,215 @@
package git
import (
"context"
"io/ioutil"
"os"
"os/exec"
"path/filepath"
"strings"
"testing"
"github.com/containerd/containerd/namespaces"
"github.com/containerd/containerd/snapshot/naive"
"github.com/moby/buildkit/cache"
"github.com/moby/buildkit/cache/metadata"
"github.com/moby/buildkit/snapshot"
"github.com/moby/buildkit/source"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func TestRepeatedFetch(t *testing.T) {
ctx := namespaces.WithNamespace(context.Background(), "buildkit-test")
tmpdir, err := ioutil.TempDir("", "buildkit-state")
require.NoError(t, err)
defer os.RemoveAll(tmpdir)
gs := setupGitSource(t, tmpdir)
repodir, err := ioutil.TempDir("", "buildkit-gitsource")
require.NoError(t, err)
defer os.RemoveAll(repodir)
setupGitRepo(t, repodir)
id := &source.GitIdentifier{Remote: repodir}
g, err := gs.Resolve(ctx, id)
require.NoError(t, err)
key1, err := g.CacheKey(ctx)
require.NoError(t, err)
require.Equal(t, 40, len(key1))
ref1, err := g.Snapshot(ctx)
require.NoError(t, err)
defer ref1.Release(context.TODO())
mount, err := ref1.Mount(ctx)
require.NoError(t, err)
lm := snapshot.LocalMounter(mount)
dir, err := lm.Mount()
require.NoError(t, err)
defer lm.Unmount()
dt, err := ioutil.ReadFile(filepath.Join(dir, "def"))
require.NoError(t, err)
require.Equal(t, "bar\n", string(dt))
_, err = os.Lstat(filepath.Join(dir, "ghi"))
require.Error(t, err)
require.True(t, os.IsNotExist(err))
// second fetch returns same dir
id = &source.GitIdentifier{Remote: repodir, Ref: "master"}
g, err = gs.Resolve(ctx, id)
require.NoError(t, err)
key2, err := g.CacheKey(ctx)
require.NoError(t, err)
require.Equal(t, key1, key2)
ref2, err := g.Snapshot(ctx)
require.NoError(t, err)
defer ref2.Release(context.TODO())
require.Equal(t, ref1.ID(), ref2.ID())
id = &source.GitIdentifier{Remote: repodir, Ref: "feature"}
g, err = gs.Resolve(ctx, id)
require.NoError(t, err)
key3, err := g.CacheKey(ctx)
require.NoError(t, err)
require.NotEqual(t, key1, key3)
ref3, err := g.Snapshot(ctx)
require.NoError(t, err)
defer ref3.Release(context.TODO())
mount, err = ref3.Mount(ctx)
require.NoError(t, err)
lm = snapshot.LocalMounter(mount)
dir, err = lm.Mount()
require.NoError(t, err)
defer lm.Unmount()
dt, err = ioutil.ReadFile(filepath.Join(dir, "ghi"))
require.NoError(t, err)
require.Equal(t, "baz\n", string(dt))
}
func TestFetchBySHA(t *testing.T) {
ctx := namespaces.WithNamespace(context.Background(), "buildkit-test")
tmpdir, err := ioutil.TempDir("", "buildkit-state")
require.NoError(t, err)
defer os.RemoveAll(tmpdir)
gs := setupGitSource(t, tmpdir)
repodir, err := ioutil.TempDir("", "buildkit-gitsource")
require.NoError(t, err)
defer os.RemoveAll(repodir)
setupGitRepo(t, repodir)
cmd := exec.Command("git", "rev-parse", "feature")
cmd.Dir = repodir
out, err := cmd.Output()
require.NoError(t, err)
sha := strings.TrimSpace(string(out))
require.Equal(t, 40, len(sha))
id := &source.GitIdentifier{Remote: repodir, Ref: sha}
g, err := gs.Resolve(ctx, id)
require.NoError(t, err)
key1, err := g.CacheKey(ctx)
require.NoError(t, err)
require.Equal(t, 40, len(key1))
ref1, err := g.Snapshot(ctx)
require.NoError(t, err)
defer ref1.Release(context.TODO())
mount, err := ref1.Mount(ctx)
require.NoError(t, err)
lm := snapshot.LocalMounter(mount)
dir, err := lm.Mount()
require.NoError(t, err)
defer lm.Unmount()
dt, err := ioutil.ReadFile(filepath.Join(dir, "ghi"))
require.NoError(t, err)
require.Equal(t, "baz\n", string(dt))
}
func setupGitSource(t *testing.T, tmpdir string) source.Source {
snapshotter, err := naive.NewSnapshotter(filepath.Join(tmpdir, "snapshots"))
assert.NoError(t, err)
md, err := metadata.NewStore(filepath.Join(tmpdir, "metadata.db"))
assert.NoError(t, err)
cm, err := cache.NewManager(cache.ManagerOpt{
Snapshotter: snapshotter,
MetadataStore: md,
})
assert.NoError(t, err)
repodir, err := ioutil.TempDir("", "buildkit-gitsource")
require.NoError(t, err)
defer os.RemoveAll(repodir)
gs, err := NewSource(Opt{
CacheAccessor: cm,
MetadataStore: md,
})
require.NoError(t, err)
return gs
}
func setupGitRepo(t *testing.T, dir string) {
runShell(t, dir,
"git init",
"git config --local user.email test",
"git config --local user.name test",
"echo foo > abc",
"git add abc",
"git commit -m initial",
"echo bar > def",
"git add def",
"git commit -m second",
"git checkout -B feature",
"echo baz > ghi",
"git add ghi",
"git commit -m feature",
)
}
func runShell(t *testing.T, dir string, cmds ...string) {
for _, args := range cmds {
cmd := exec.Command("sh", "-c", args)
cmd.Dir = dir
dt, err := cmd.CombinedOutput()
require.NoError(t, err, "command %v returned %s", args, dt)
}
}

70
source/gitidentifier.go Normal file
View File

@ -0,0 +1,70 @@
package source
import (
"net/url"
"strings"
"github.com/docker/docker/pkg/urlutil"
"github.com/pkg/errors"
)
type GitIdentifier struct {
Remote string
Ref string
Subdir string
}
func NewGitIdentifier(remoteURL string) (*GitIdentifier, error) {
repo := GitIdentifier{}
if !isGitTransport(remoteURL) {
remoteURL = "https://" + remoteURL
}
var fragment string
if strings.HasPrefix(remoteURL, "git@") {
// git@.. is not an URL, so cannot be parsed as URL
parts := strings.SplitN(remoteURL, "#", 2)
repo.Remote = parts[0]
if len(parts) == 2 {
fragment = parts[1]
}
repo.Ref, repo.Subdir = getRefAndSubdir(fragment)
} else {
u, err := url.Parse(remoteURL)
if err != nil {
return &repo, err
}
repo.Ref, repo.Subdir = getRefAndSubdir(u.Fragment)
u.Fragment = ""
repo.Remote = u.String()
}
if repo.Subdir != "" {
return nil, errors.Errorf("subdir not supported yet")
}
return &repo, nil
}
func (i *GitIdentifier) ID() string {
return "git"
}
// isGitTransport returns true if the provided str is a git transport by inspecting
// the prefix of the string for known protocols used in git.
func isGitTransport(str string) bool {
return urlutil.IsURL(str) || strings.HasPrefix(str, "git://") || strings.HasPrefix(str, "git@")
}
func getRefAndSubdir(fragment string) (ref string, subdir string) {
refAndDir := strings.SplitN(fragment, ":", 2)
ref = "master"
if len(refAndDir[0]) != 0 {
ref = refAndDir[0]
}
if len(refAndDir) > 1 && len(refAndDir[1]) != 0 {
subdir = refAndDir[1]
}
return
}

3
source/identifier.go
View File

@ -14,6 +14,7 @@ var (
const (
DockerImageScheme = "docker-image"
GitScheme = "git"
)
type Identifier interface {
@ -30,6 +31,8 @@ func FromString(s string) (Identifier, error) {
switch parts[0] {
case DockerImageScheme:
return NewImageIdentifier(parts[1])
case GitScheme:
return NewGitIdentifier(parts[1])
default:
return nil, errors.Wrapf(errNotFound, "unknown schema %s", parts[0])
}

2
source/manager.go
View File

@ -1,11 +1,11 @@
package source
import (
"context"
"sync"
"github.com/moby/buildkit/cache"
"github.com/pkg/errors"
"golang.org/x/net/context"
)
type Source interface {

49
util/progress/logs/logs.go Normal file
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@ -0,0 +1,49 @@
package logs
import (
"context"
"io"
"os"
"github.com/moby/buildkit/client"
"github.com/moby/buildkit/identity"
"github.com/moby/buildkit/util/progress"
"github.com/pkg/errors"
)
func NewLogStreams(ctx context.Context) (io.WriteCloser, io.WriteCloser) {
return newStreamWriter(ctx, 1), newStreamWriter(ctx, 2)
}
func newStreamWriter(ctx context.Context, stream int) io.WriteCloser {
pw, _, _ := progress.FromContext(ctx)
return &streamWriter{
pw: pw,
stream: stream,
}
}
type streamWriter struct {
pw progress.Writer
stream int
}
func (sw *streamWriter) Write(dt []byte) (int, error) {
sw.pw.Write(identity.NewID(), client.VertexLog{
Stream: sw.stream,
Data: append([]byte{}, dt...),
})
// TODO: remove debug
switch sw.stream {
case 1:
return os.Stdout.Write(dt)
case 2:
return os.Stderr.Write(dt)
default:
return 0, errors.Errorf("invalid stream %d", sw.stream)
}
}
func (sw *streamWriter) Close() error {
return sw.pw.Close()
}

5
vendor.conf
View File

@ -30,4 +30,7 @@ github.com/docker/go-events aa2e3b613fbbfdddbe055a7b9e3ce271cfd83eca
github.com/urfave/cli d70f47eeca3afd795160003bc6e28b001d60c67c
github.com/docker/go-units 0dadbb0345b35ec7ef35e228dabb8de89a65bf52
github.com/google/shlex 6f45313302b9c56850fc17f99e40caebce98c716
golang.org/x/time 8be79e1e0910c292df4e79c241bb7e8f7e725959
golang.org/x/time 8be79e1e0910c292df4e79c241bb7e8f7e725959
github.com/BurntSushi/locker 392720b78f44e9d0249fcac6c43b111b47a370b8
github.com/docker/docker 05c7c311390911daebcf5d9519dee813fc02a887

21
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@ -0,0 +1,21 @@
Package locker is a simple package to manage named ReadWrite mutexes. These
appear to be especially useful for synchronizing access to session based
information in web applications.
The common use case is to use the package level functions, which use a package
level set of locks (safe to use from multiple goroutines simultaneously).
However, you may also create a new separate set of locks.
All locks are implemented with read-write mutexes. To use them like a regular
mutex, simply ignore the RLock/RUnlock functions.
### Installation
go get github.com/BurntSushi/locker
### Documentation
http://godoc.org/github.com/BurntSushi/locker

24
vendor/github.com/BurntSushi/locker/UNLICENSE generated vendored Normal file
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@ -0,0 +1,24 @@
This is free and unencumbered software released into the public domain.
Anyone is free to copy, modify, publish, use, compile, sell, or
distribute this software, either in source code form or as a compiled
binary, for any purpose, commercial or non-commercial, and by any
means.
In jurisdictions that recognize copyright laws, the author or authors
of this software dedicate any and all copyright interest in the
software to the public domain. We make this dedication for the benefit
of the public at large and to the detriment of our heirs and
successors. We intend this dedication to be an overt act of
relinquishment in perpetuity of all present and future rights to this
software under copyright law.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
OTHER DEALINGS IN THE SOFTWARE.
For more information, please refer to <http://unlicense.org/>

105
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@ -0,0 +1,105 @@
/*
Package locker is a simple package to manage named ReadWrite mutexes. These
appear to be especially useful for synchronizing access to session based
information in web applications.
The common use case is to use the package level functions, which use a package
level set of locks (safe to use from multiple goroutines simultaneously).
However, you may also create a new separate set of locks.
All locks are implemented with read-write mutexes. To use them like a regular
mutex, simply ignore the RLock/RUnlock functions.
*/
package locker
// BUG(burntsushi): The locker here can grow without bound in long running
// programs. Since it's intended to be used in web applications, this is a
// major problem. Figure out a way to keep the locker lean.
import (
"fmt"
"sync"
)
// Locker represents the set of named ReadWrite mutexes. It is safe to access
// from multiple goroutines simultaneously.
type Locker struct {
locks map[string]*sync.RWMutex
locksRW *sync.RWMutex
}
var locker *Locker
func init() {
locker = NewLocker()
}
func Lock(key string) { locker.Lock(key) }
func Unlock(key string) { locker.Unlock(key) }
func RLock(key string) { locker.RLock(key) }
func RUnlock(key string) { locker.RUnlock(key) }
func NewLocker() *Locker {
return &Locker{
locks: make(map[string]*sync.RWMutex),
locksRW: new(sync.RWMutex),
}
}
func (lker *Locker) Lock(key string) {
lk, ok := lker.getLock(key)
if !ok {
lk = lker.newLock(key)
}
lk.Lock()
}
func (lker *Locker) Unlock(key string) {
lk, ok := lker.getLock(key)
if !ok {
panic(fmt.Errorf("BUG: Lock for key '%s' not initialized.", key))
}
lk.Unlock()
}
func (lker *Locker) RLock(key string) {
lk, ok := lker.getLock(key)
if !ok {
lk = lker.newLock(key)
}
lk.RLock()
}
func (lker *Locker) RUnlock(key string) {
lk, ok := lker.getLock(key)
if !ok {
panic(fmt.Errorf("BUG: Lock for key '%s' not initialized.", key))
}
lk.RUnlock()
}
func (lker *Locker) newLock(key string) *sync.RWMutex {
lker.locksRW.Lock()
defer lker.locksRW.Unlock()
lk := new(sync.RWMutex)
lker.locks[key] = lk
return lk
}
func (lker *Locker) getLock(key string) (*sync.RWMutex, bool) {
lker.locksRW.RLock()
defer lker.locksRW.RUnlock()
lock, ok := lker.locks[key]
return lock, ok
}
func (lker *Locker) deleteLock(key string) {
lker.locksRW.Lock()
defer lker.locksRW.Unlock()
if _, ok := lker.locks[key]; ok {
delete(lker.locks, key)
}
}

191
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@ -0,0 +1,191 @@
Apache License
Version 2.0, January 2004
https://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
the copyright owner that is granting the License.
"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship. For the purposes
of this License, Derivative Works shall not include works that remain
separable from, or merely link (or bind by name) to the interfaces of,
the Work and Derivative Works thereof.
"Contribution" shall mean any work of authorship, including
the original version of the Work and any modifications or additions
to that Work or Derivative Works thereof, that is intentionally
submitted to Licensor for inclusion in the Work by the copyright owner
or by an individual or Legal Entity authorized to submit on behalf of
the copyright owner. For the purposes of this definition, "submitted"
means any form of electronic, verbal, or written communication sent
to the Licensor or its representatives, including but not limited to
communication on electronic mailing lists, source code control systems,
and issue tracking systems that are managed by, or on behalf of, the
Licensor for the purpose of discussing and improving the Work, but
excluding communication that is conspicuously marked or otherwise
designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
subsequently incorporated within the Work.
2. Grant of Copyright License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
copyright license to reproduce, prepare Derivative Works of,
publicly display, publicly perform, sublicense, and distribute the
Work and such Derivative Works in Source or Object form.
3. Grant of Patent License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
(except as stated in this section) patent license to make, have made,
use, offer to sell, sell, import, and otherwise transfer the Work,
where such license applies only to those patent claims licensable
by such Contributor that are necessarily infringed by their
Contribution(s) alone or by combination of their Contribution(s)
with the Work to which such Contribution(s) was submitted. If You
institute patent litigation against any entity (including a
cross-claim or counterclaim in a lawsuit) alleging that the Work
or a Contribution incorporated within the Work constitutes direct
or contributory patent infringement, then any patent licenses
granted to You under this License for that Work shall terminate
as of the date such litigation is filed.
4. Redistribution. You may reproduce and distribute copies of the
Work or Derivative Works thereof in any medium, with or without
modifications, and in Source or Object form, provided that You
meet the following conditions:
(a) You must give any other recipients of the Work or
Derivative Works a copy of this License; and
(b) You must cause any modified files to carry prominent notices
stating that You changed the files; and
(c) You must retain, in the Source form of any Derivative Works
that You distribute, all copyright, patent, trademark, and
attribution notices from the Source form of the Work,
excluding those notices that do not pertain to any part of
the Derivative Works; and
(d) If the Work includes a "NOTICE" text file as part of its
distribution, then any Derivative Works that You distribute must
include a readable copy of the attribution notices contained
within such NOTICE file, excluding those notices that do not
pertain to any part of the Derivative Works, in at least one
of the following places: within a NOTICE text file distributed
as part of the Derivative Works; within the Source form or
documentation, if provided along with the Derivative Works; or,
within a display generated by the Derivative Works, if and
wherever such third-party notices normally appear. The contents
of the NOTICE file are for informational purposes only and
do not modify the License. You may add Your own attribution
notices within Derivative Works that You distribute, alongside
or as an addendum to the NOTICE text from the Work, provided
that such additional attribution notices cannot be construed
as modifying the License.
You may add Your own copyright statement to Your modifications and
may provide additional or different license terms and conditions
for use, reproduction, or distribution of Your modifications, or
for any such Derivative Works as a whole, provided Your use,
reproduction, and distribution of the Work otherwise complies with
the conditions stated in this License.
5. Submission of Contributions. Unless You explicitly state otherwise,
any Contribution intentionally submitted for inclusion in the Work
by You to the Licensor shall be under the terms and conditions of
this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
with Licensor regarding such Contributions.
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor,
except as required for reasonable and customary use in describing the
origin of the Work and reproducing the content of the NOTICE file.
7. Disclaimer of Warranty. Unless required by applicable law or
agreed to in writing, Licensor provides the Work (and each
Contributor provides its Contributions) on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied, including, without limitation, any warranties or conditions
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
Copyright 2013-2017 Docker, Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
https://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

19
vendor/github.com/docker/docker/NOTICE generated vendored Normal file
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@ -0,0 +1,19 @@
Docker
Copyright 2012-2017 Docker, Inc.
This product includes software developed at Docker, Inc. (https://www.docker.com).
This product contains software (https://github.com/kr/pty) developed
by Keith Rarick, licensed under the MIT License.
The following is courtesy of our legal counsel:
Use and transfer of Docker may be subject to certain restrictions by the
United States and other governments.
It is your responsibility to ensure that your use and/or transfer does not
violate applicable laws.
For more information, please see https://www.bis.doc.gov
See also https://www.apache.org/dev/crypto.html and/or seek legal counsel.

90
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### Docker users, see [Moby and Docker](https://mobyproject.org/#moby-and-docker) to clarify the relationship between the projects
### Docker maintainers and contributors, see [Transitioning to Moby](#transitioning-to-moby) for more details
The Moby Project
================
![Moby Project logo](docs/static_files/moby-project-logo.png "The Moby Project")
Moby is an open-source project created by Docker to advance the software containerization movement.
It provides a “Lego set” of dozens of components, the framework for assembling them into custom container-based systems, and a place for all container enthusiasts to experiment and exchange ideas.
# Moby
## Overview
At the core of Moby is a framework to assemble specialized container systems.
It provides:
- A library of containerized components for all vital aspects of a container system: OS, container runtime, orchestration, infrastructure management, networking, storage, security, build, image distribution, etc.
- Tools to assemble the components into runnable artifacts for a variety of platforms and architectures: bare metal (both x86 and Arm); executables for Linux, Mac and Windows; VM images for popular cloud and virtualization providers.
- A set of reference assemblies which can be used as-is, modified, or used as inspiration to create your own.
All Moby components are containers, so creating new components is as easy as building a new OCI-compatible container.
## Principles
Moby is an open project guided by strong principles, but modular, flexible and without too strong an opinion on user experience, so it is open to the community to help set its direction.
The guiding principles are:
- Batteries included but swappable: Moby includes enough components to build fully featured container system, but its modular architecture ensures that most of the components can be swapped by different implementations.
- Usable security: Moby will provide secure defaults without compromising usability.
- Container centric: Moby is built with containers, for running containers.
With Moby, you should be able to describe all the components of your distributed application, from the high-level configuration files down to the kernel you would like to use and build and deploy it easily.
Moby uses [containerd](https://github.com/containerd/containerd) as the default container runtime.
## Audience
Moby is recommended for anyone who wants to assemble a container-based system. This includes:
- Hackers who want to customize or patch their Docker build
- System engineers or integrators building a container system
- Infrastructure providers looking to adapt existing container systems to their environment
- Container enthusiasts who want to experiment with the latest container tech
- Open-source developers looking to test their project in a variety of different systems
- Anyone curious about Docker internals and how it’s built
Moby is NOT recommended for:
- Application developers looking for an easy way to run their applications in containers. We recommend Docker CE instead.
- Enterprise IT and development teams looking for a ready-to-use, commercially supported container platform. We recommend Docker EE instead.
- Anyone curious about containers and looking for an easy way to learn. We recommend the docker.com website instead.
# Transitioning to Moby
Docker is transitioning all of its open source collaborations to the Moby project going forward.
During the transition, all open source activity should continue as usual.
We are proposing the following list of changes:
- splitting up the engine into more open components
- removing the docker UI, SDK etc to keep them in the Docker org
- clarifying that the project is not limited to the engine, but to the assembly of all the individual components of the Docker platform
- open-source new tools & components which we currently use to assemble the Docker product, but could benefit the community
- defining an open, community-centric governance inspired by the Fedora project (a very successful example of balancing the needs of the community with the constraints of the primary corporate sponsor)
-----
Legal
=====
*Brought to you courtesy of our legal counsel. For more context,
please see the [NOTICE](https://github.com/moby/moby/blob/master/NOTICE) document in this repo.*
Use and transfer of Moby may be subject to certain restrictions by the
United States and other governments.
It is your responsibility to ensure that your use and/or transfer does not
violate applicable laws.
For more information, please see https://www.bis.doc.gov
Licensing
=========
Moby is licensed under the Apache License, Version 2.0. See
[LICENSE](https://github.com/moby/moby/blob/master/LICENSE) for the full
license text.

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## About
This directory contains a collection of scripts used to build and manage this
repository. If there are any issues regarding the intention of a particular
script (or even part of a certain script), please reach out to us.
It may help us either refine our current scripts, or add on new ones
that are appropriate for a given use case.
## DinD (dind.sh)
DinD is a wrapper script which allows Docker to be run inside a Docker
container. DinD requires the container to
be run with privileged mode enabled.
## Generate Authors (generate-authors.sh)
Generates AUTHORS; a file with all the names and corresponding emails of
individual contributors. AUTHORS can be found in the home directory of
this repository.
## Install (install.sh)
Executable install script for installing Docker. If updates to this are
desired, please use hack/release.sh during a normal release. The following
one-liner may be used for script hotfixes:
- `aws s3 cp --acl public-read hack/install.sh s3://get.docker.com/index`
## Make
There are two make files, each with different extensions. Neither are supposed
to be called directly; only invoke `make`. Both scripts run inside a Docker
container.
### make.ps1
- The Windows native build script that uses PowerShell semantics; it is limited
unlike `hack\make.sh` since it does not provide support for the full set of
operations provided by the Linux counterpart, `make.sh`. However, `make.ps1`
does provide support for local Windows development and Windows to Windows CI.
More information is found within `make.ps1` by the author, @jhowardmsft
### make.sh
- Referenced via `make test` when running tests on a local machine,
or directly referenced when running tests inside a Docker development container.
- When running on a local machine, `make test` to run all tests found in
`test`, `test-unit`, `test-integration-cli`, and `test-docker-py` on
your local machine. The default timeout is set in `make.sh` to 60 minutes
(`${TIMEOUT:=60m}`), since it currently takes up to an hour to run
all of the tests.
- When running inside a Docker development container, `hack/make.sh` does
not have a single target that runs all the tests. You need to provide a
single command line with multiple targets that performs the same thing.
An example referenced from [Run targets inside a development container](https://docs.docker.com/opensource/project/test-and-docs/#run-targets-inside-a-development-container): `root@5f8630b873fe:/go/src/github.com/moby/moby# hack/make.sh dynbinary binary cross test-unit test-integration-cli test-docker-py`
- For more information related to testing outside the scope of this README,
refer to
[Run tests and test documentation](https://docs.docker.com/opensource/project/test-and-docs/)
## Release (release.sh)
Releases any bundles built by `make` on a public AWS S3 bucket.
For information regarding configuration, please view `release.sh`.
## Vendor (vendor.sh)
A shell script that is a wrapper around Vndr. For information on how to use
this, please refer to [vndr's README](https://github.com/LK4D4/vndr/blob/master/README.md)

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# Integration Testing on Swarm
IT on Swarm allows you to execute integration test in parallel across a Docker Swarm cluster
## Architecture
### Master service
- Works as a funker caller
- Calls a worker funker (`-worker-service`) with a chunk of `-check.f` filter strings (passed as a file via `-input` flag, typically `/mnt/input`)
### Worker service
- Works as a funker callee
- Executes an equivalent of `TESTFLAGS=-check.f TestFoo|TestBar|TestBaz ... make test-integration-cli` using the bind-mounted API socket (`docker.sock`)
### Client
- Controls master and workers via `docker stack`
- No need to have a local daemon
Typically, the master and workers are supposed to be running on a cloud environment,
while the client is supposed to be running on a laptop, e.g. Docker for Mac/Windows.
## Requirement
- Docker daemon 1.13 or later
- Private registry for distributed execution with multiple nodes
## Usage
### Step 1: Prepare images
$ make build-integration-cli-on-swarm
Following environment variables are known to work in this step:
- `BUILDFLAGS`
- `DOCKER_INCREMENTAL_BINARY`
Note: during the transition into Moby Project, you might need to create a symbolic link `$GOPATH/src/github.com/docker/docker` to `$GOPATH/src/github.com/moby/moby`.
### Step 2: Execute tests
$ ./hack/integration-cli-on-swarm/integration-cli-on-swarm -replicas 40 -push-worker-image YOUR_REGISTRY.EXAMPLE.COM/integration-cli-worker:latest
Following environment variables are known to work in this step:
- `DOCKER_GRAPHDRIVER`
- `DOCKER_EXPERIMENTAL`
#### Flags
Basic flags:
- `-replicas N`: the number of worker service replicas. i.e. degree of parallelism.
- `-chunks N`: the number of chunks. By default, `chunks` == `replicas`.
- `-push-worker-image REGISTRY/IMAGE:TAG`: push the worker image to the registry. Note that if you have only single node and hence you do not need a private registry, you do not need to specify `-push-worker-image`.
Experimental flags for mitigating makespan nonuniformity:
- `-shuffle`: Shuffle the test filter strings
Flags for debugging IT on Swarm itself:
- `-rand-seed N`: the random seed. This flag is useful for deterministic replaying. By default(0), the timestamp is used.
- `-filters-file FILE`: the file contains `-check.f` strings. By default, the file is automatically generated.
- `-dry-run`: skip the actual workload
- `keep-executor`: do not auto-remove executor containers, which is used for running privileged programs on Swarm

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# dependencies specific to worker (i.e. github.com/docker/docker/...) are not vendored here
github.com/bfirsh/funker-go eaa0a2e06f30e72c9a0b7f858951e581e26ef773

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pkg/ is a collection of utility packages used by the Docker project without being specific to its internals.
Utility packages are kept separate from the docker core codebase to keep it as small and concise as possible.
If some utilities grow larger and their APIs stabilize, they may be moved to their own repository under the
Docker organization, to facilitate re-use by other projects. However that is not the priority.
The directory `pkg` is named after the same directory in the camlistore project. Since Brad is a core
Go maintainer, we thought it made sense to copy his methods for organizing Go code :) Thanks Brad!
Because utility packages are small and neatly separated from the rest of the codebase, they are a good
place to start for aspiring maintainers and contributors. Get in touch if you want to help maintain them!

26
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// longpath introduces some constants and helper functions for handling long paths
// in Windows, which are expected to be prepended with `\\?\` and followed by either
// a drive letter, a UNC server\share, or a volume identifier.
package longpath
import (
"strings"
)
// Prefix is the longpath prefix for Windows file paths.
const Prefix = `\\?\`
// AddPrefix will add the Windows long path prefix to the path provided if
// it does not already have it.
func AddPrefix(path string) string {
if !strings.HasPrefix(path, Prefix) {
if strings.HasPrefix(path, `\\`) {
// This is a UNC path, so we need to add 'UNC' to the path as well.
path = Prefix + `UNC` + path[1:]
} else {
path = Prefix + path
}
}
return path
}

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vendor/github.com/docker/docker/pkg/mount/flags.go generated vendored Normal file
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package mount
import (
"fmt"
"strings"
)
var flags = map[string]struct {
clear bool
flag int
}{
"defaults": {false, 0},
"ro": {false, RDONLY},
"rw": {true, RDONLY},
"suid": {true, NOSUID},
"nosuid": {false, NOSUID},
"dev": {true, NODEV},
"nodev": {false, NODEV},
"exec": {true, NOEXEC},
"noexec": {false, NOEXEC},
"sync": {false, SYNCHRONOUS},
"async": {true, SYNCHRONOUS},
"dirsync": {false, DIRSYNC},
"remount": {false, REMOUNT},
"mand": {false, MANDLOCK},
"nomand": {true, MANDLOCK},
"atime": {true, NOATIME},
"noatime": {false, NOATIME},
"diratime": {true, NODIRATIME},
"nodiratime": {false, NODIRATIME},
"bind": {false, BIND},
"rbind": {false, RBIND},
"unbindable": {false, UNBINDABLE},
"runbindable": {false, RUNBINDABLE},
"private": {false, PRIVATE},
"rprivate": {false, RPRIVATE},
"shared": {false, SHARED},
"rshared": {false, RSHARED},
"slave": {false, SLAVE},
"rslave": {false, RSLAVE},
"relatime": {false, RELATIME},
"norelatime": {true, RELATIME},
"strictatime": {false, STRICTATIME},
"nostrictatime": {true, STRICTATIME},
}
var validFlags = map[string]bool{
"": true,
"size": true,
"mode": true,
"uid": true,
"gid": true,
"nr_inodes": true,
"nr_blocks": true,
"mpol": true,
}
var propagationFlags = map[string]bool{
"bind": true,
"rbind": true,
"unbindable": true,
"runbindable": true,
"private": true,
"rprivate": true,
"shared": true,
"rshared": true,
"slave": true,
"rslave": true,
}
// MergeTmpfsOptions merge mount options to make sure there is no duplicate.
func MergeTmpfsOptions(options []string) ([]string, error) {
// We use collisions maps to remove duplicates.
// For flag, the key is the flag value (the key for propagation flag is -1)
// For data=value, the key is the data
flagCollisions := map[int]bool{}
dataCollisions := map[string]bool{}
var newOptions []string
// We process in reverse order
for i := len(options) - 1; i >= 0; i-- {
option := options[i]
if option == "defaults" {
continue
}
if f, ok := flags[option]; ok && f.flag != 0 {
// There is only one propagation mode
key := f.flag
if propagationFlags[option] {
key = -1
}
// Check to see if there is collision for flag
if !flagCollisions[key] {
// We prepend the option and add to collision map
newOptions = append([]string{option}, newOptions...)
flagCollisions[key] = true
}
continue
}
opt := strings.SplitN(option, "=", 2)
if len(opt) != 2 || !validFlags[opt[0]] {
return nil, fmt.Errorf("Invalid tmpfs option %q", opt)
}
if !dataCollisions[opt[0]] {
// We prepend the option and add to collision map
newOptions = append([]string{option}, newOptions...)
dataCollisions[opt[0]] = true
}
}
return newOptions, nil
}
// Parse fstab type mount options into mount() flags
// and device specific data
func parseOptions(options string) (int, string) {
var (
flag int
data []string
)
for _, o := range strings.Split(options, ",") {
// If the option does not exist in the flags table or the flag
// is not supported on the platform,
// then it is a data value for a specific fs type
if f, exists := flags[o]; exists && f.flag != 0 {
if f.clear {
flag &= ^f.flag
} else {
flag |= f.flag
}
} else {
data = append(data, o)
}
}
return flag, strings.Join(data, ",")
}
// ParseTmpfsOptions parse fstab type mount options into flags and data
func ParseTmpfsOptions(options string) (int, string, error) {
flags, data := parseOptions(options)
for _, o := range strings.Split(data, ",") {
opt := strings.SplitN(o, "=", 2)
if !validFlags[opt[0]] {
return 0, "", fmt.Errorf("Invalid tmpfs option %q", opt)
}
}
return flags, data, nil
}

49
vendor/github.com/docker/docker/pkg/mount/flags_freebsd.go generated vendored Normal file
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// +build freebsd,cgo
package mount
/*
#include <sys/mount.h>
*/
import "C"
const (
// RDONLY will mount the filesystem as read-only.
RDONLY = C.MNT_RDONLY
// NOSUID will not allow set-user-identifier or set-group-identifier bits to
// take effect.
NOSUID = C.MNT_NOSUID
// NOEXEC will not allow execution of any binaries on the mounted file system.
NOEXEC = C.MNT_NOEXEC
// SYNCHRONOUS will allow any I/O to the file system to be done synchronously.
SYNCHRONOUS = C.MNT_SYNCHRONOUS
// NOATIME will not update the file access time when reading from a file.
NOATIME = C.MNT_NOATIME
)
// These flags are unsupported.
const (
BIND = 0
DIRSYNC = 0
MANDLOCK = 0
NODEV = 0
NODIRATIME = 0
UNBINDABLE = 0
RUNBINDABLE = 0
PRIVATE = 0
RPRIVATE = 0
SHARED = 0
RSHARED = 0
SLAVE = 0
RSLAVE = 0
RBIND = 0
RELATIVE = 0
RELATIME = 0
REMOUNT = 0
STRICTATIME = 0
mntDetach = 0
)

87
vendor/github.com/docker/docker/pkg/mount/flags_linux.go generated vendored Normal file
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package mount
import (
"syscall"
)
const (
// RDONLY will mount the file system read-only.
RDONLY = syscall.MS_RDONLY
// NOSUID will not allow set-user-identifier or set-group-identifier bits to
// take effect.
NOSUID = syscall.MS_NOSUID
// NODEV will not interpret character or block special devices on the file
// system.
NODEV = syscall.MS_NODEV
// NOEXEC will not allow execution of any binaries on the mounted file system.
NOEXEC = syscall.MS_NOEXEC
// SYNCHRONOUS will allow I/O to the file system to be done synchronously.
SYNCHRONOUS = syscall.MS_SYNCHRONOUS
// DIRSYNC will force all directory updates within the file system to be done
// synchronously. This affects the following system calls: create, link,
// unlink, symlink, mkdir, rmdir, mknod and rename.
DIRSYNC = syscall.MS_DIRSYNC
// REMOUNT will attempt to remount an already-mounted file system. This is
// commonly used to change the mount flags for a file system, especially to
// make a readonly file system writeable. It does not change device or mount
// point.
REMOUNT = syscall.MS_REMOUNT
// MANDLOCK will force mandatory locks on a filesystem.
MANDLOCK = syscall.MS_MANDLOCK
// NOATIME will not update the file access time when reading from a file.
NOATIME = syscall.MS_NOATIME
// NODIRATIME will not update the directory access time.
NODIRATIME = syscall.MS_NODIRATIME
// BIND remounts a subtree somewhere else.
BIND = syscall.MS_BIND
// RBIND remounts a subtree and all possible submounts somewhere else.
RBIND = syscall.MS_BIND | syscall.MS_REC
// UNBINDABLE creates a mount which cannot be cloned through a bind operation.
UNBINDABLE = syscall.MS_UNBINDABLE
// RUNBINDABLE marks the entire mount tree as UNBINDABLE.
RUNBINDABLE = syscall.MS_UNBINDABLE | syscall.MS_REC
// PRIVATE creates a mount which carries no propagation abilities.
PRIVATE = syscall.MS_PRIVATE
// RPRIVATE marks the entire mount tree as PRIVATE.
RPRIVATE = syscall.MS_PRIVATE | syscall.MS_REC
// SLAVE creates a mount which receives propagation from its master, but not
// vice versa.
SLAVE = syscall.MS_SLAVE
// RSLAVE marks the entire mount tree as SLAVE.
RSLAVE = syscall.MS_SLAVE | syscall.MS_REC
// SHARED creates a mount which provides the ability to create mirrors of
// that mount such that mounts and unmounts within any of the mirrors
// propagate to the other mirrors.
SHARED = syscall.MS_SHARED
// RSHARED marks the entire mount tree as SHARED.
RSHARED = syscall.MS_SHARED | syscall.MS_REC
// RELATIME updates inode access times relative to modify or change time.
RELATIME = syscall.MS_RELATIME
// STRICTATIME allows to explicitly request full atime updates. This makes
// it possible for the kernel to default to relatime or noatime but still
// allow userspace to override it.
STRICTATIME = syscall.MS_STRICTATIME
mntDetach = syscall.MNT_DETACH
)

31
vendor/github.com/docker/docker/pkg/mount/flags_unsupported.go generated vendored Normal file
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// +build !linux,!freebsd freebsd,!cgo solaris,!cgo
package mount
// These flags are unsupported.
const (
BIND = 0
DIRSYNC = 0
MANDLOCK = 0
NOATIME = 0
NODEV = 0
NODIRATIME = 0
NOEXEC = 0
NOSUID = 0
UNBINDABLE = 0
RUNBINDABLE = 0
PRIVATE = 0
RPRIVATE = 0
SHARED = 0
RSHARED = 0
SLAVE = 0
RSLAVE = 0
RBIND = 0
RELATIME = 0
RELATIVE = 0
REMOUNT = 0
STRICTATIME = 0
SYNCHRONOUS = 0
RDONLY = 0
mntDetach = 0
)

86
vendor/github.com/docker/docker/pkg/mount/mount.go generated vendored Normal file
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package mount
import (
"sort"
"strings"
)
// GetMounts retrieves a list of mounts for the current running process.
func GetMounts() ([]*Info, error) {
return parseMountTable()
}
// Mounted determines if a specified mountpoint has been mounted.
// On Linux it looks at /proc/self/mountinfo and on Solaris at mnttab.
func Mounted(mountpoint string) (bool, error) {
entries, err := parseMountTable()
if err != nil {
return false, err
}
// Search the table for the mountpoint
for _, e := range entries {
if e.Mountpoint == mountpoint {
return true, nil
}
}
return false, nil
}
// Mount will mount filesystem according to the specified configuration, on the
// condition that the target path is *not* already mounted. Options must be
// specified like the mount or fstab unix commands: "opt1=val1,opt2=val2". See
// flags.go for supported option flags.
func Mount(device, target, mType, options string) error {
flag, _ := parseOptions(options)
if flag&REMOUNT != REMOUNT {
if mounted, err := Mounted(target); err != nil || mounted {
return err
}
}
return ForceMount(device, target, mType, options)
}
// ForceMount will mount a filesystem according to the specified configuration,
// *regardless* if the target path is not already mounted. Options must be
// specified like the mount or fstab unix commands: "opt1=val1,opt2=val2". See
// flags.go for supported option flags.
func ForceMount(device, target, mType, options string) error {
flag, data := parseOptions(options)
return mount(device, target, mType, uintptr(flag), data)
}
// Unmount lazily unmounts a filesystem on supported platforms, otherwise
// does a normal unmount.
func Unmount(target string) error {
if mounted, err := Mounted(target); err != nil || !mounted {
return err
}
return unmount(target, mntDetach)
}
// RecursiveUnmount unmounts the target and all mounts underneath, starting with
// the deepsest mount first.
func RecursiveUnmount(target string) error {
mounts, err := GetMounts()
if err != nil {
return err
}
// Make the deepest mount be first
sort.Sort(sort.Reverse(byMountpoint(mounts)))
for i, m := range mounts {
if !strings.HasPrefix(m.Mountpoint, target) {
continue
}
if err := Unmount(m.Mountpoint); err != nil && i == len(mounts)-1 {
if mounted, err := Mounted(m.Mountpoint); err != nil || mounted {
return err
}
// Ignore errors for submounts and continue trying to unmount others
// The final unmount should fail if there ane any submounts remaining
}
}
return nil
}

59
vendor/github.com/docker/docker/pkg/mount/mounter_freebsd.go generated vendored Normal file
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package mount
/*
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <sys/_iovec.h>
#include <sys/mount.h>
#include <sys/param.h>
*/
import "C"
import (
"fmt"
"strings"
"syscall"
"unsafe"
)
func allocateIOVecs(options []string) []C.struct_iovec {
out := make([]C.struct_iovec, len(options))
for i, option := range options {
out[i].iov_base = unsafe.Pointer(C.CString(option))
out[i].iov_len = C.size_t(len(option) + 1)
}
return out
}
func mount(device, target, mType string, flag uintptr, data string) error {
isNullFS := false
xs := strings.Split(data, ",")
for _, x := range xs {
if x == "bind" {
isNullFS = true
}
}
options := []string{"fspath", target}
if isNullFS {
options = append(options, "fstype", "nullfs", "target", device)
} else {
options = append(options, "fstype", mType, "from", device)
}
rawOptions := allocateIOVecs(options)
for _, rawOption := range rawOptions {
defer C.free(rawOption.iov_base)
}
if errno := C.nmount(&rawOptions[0], C.uint(len(options)), C.int(flag)); errno != 0 {
reason := C.GoString(C.strerror(*C.__error()))
return fmt.Errorf("Failed to call nmount: %s", reason)
}
return nil
}
func unmount(target string, flag int) error {
return syscall.Unmount(target, flag)
}

56
vendor/github.com/docker/docker/pkg/mount/mounter_linux.go generated vendored Normal file
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package mount
import (
"syscall"
)
const (
// ptypes is the set propagation types.
ptypes = syscall.MS_SHARED | syscall.MS_PRIVATE | syscall.MS_SLAVE | syscall.MS_UNBINDABLE
// pflags is the full set valid flags for a change propagation call.
pflags = ptypes | syscall.MS_REC | syscall.MS_SILENT
// broflags is the combination of bind and read only
broflags = syscall.MS_BIND | syscall.MS_RDONLY
)
// isremount returns true if either device name or flags identify a remount request, false otherwise.
func isremount(device string, flags uintptr) bool {
switch {
// We treat device "" and "none" as a remount request to provide compatibility with
// requests that don't explicitly set MS_REMOUNT such as those manipulating bind mounts.
case flags&syscall.MS_REMOUNT != 0, device == "", device == "none":
return true
default:
return false
}
}
func mount(device, target, mType string, flags uintptr, data string) error {
oflags := flags &^ ptypes
if !isremount(device, flags) {
// Initial call applying all non-propagation flags.
if err := syscall.Mount(device, target, mType, oflags, data); err != nil {
return err
}
}
if flags&ptypes != 0 {
// Change the propagation type.
if err := syscall.Mount("", target, "", flags&pflags, ""); err != nil {
return err
}
}
if oflags&broflags == broflags {
// Remount the bind to apply read only.
return syscall.Mount("", target, "", oflags|syscall.MS_REMOUNT, "")
}
return nil
}
func unmount(target string, flag int) error {
return syscall.Unmount(target, flag)
}

33
vendor/github.com/docker/docker/pkg/mount/mounter_solaris.go generated vendored Normal file
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@ -0,0 +1,33 @@
// +build solaris,cgo
package mount
import (
"golang.org/x/sys/unix"
"unsafe"
)
// #include <stdlib.h>
// #include <stdio.h>
// #include <sys/mount.h>
// int Mount(const char *spec, const char *dir, int mflag,
// char *fstype, char *dataptr, int datalen, char *optptr, int optlen) {
// return mount(spec, dir, mflag, fstype, dataptr, datalen, optptr, optlen);
// }
import "C"
func mount(device, target, mType string, flag uintptr, data string) error {
spec := C.CString(device)
dir := C.CString(target)
fstype := C.CString(mType)
_, err := C.Mount(spec, dir, C.int(flag), fstype, nil, 0, nil, 0)
C.free(unsafe.Pointer(spec))
C.free(unsafe.Pointer(dir))
C.free(unsafe.Pointer(fstype))
return err
}
func unmount(target string, flag int) error {
err := unix.Unmount(target, flag)
return err
}

11
vendor/github.com/docker/docker/pkg/mount/mounter_unsupported.go generated vendored Normal file
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@ -0,0 +1,11 @@
// +build !linux,!freebsd,!solaris freebsd,!cgo solaris,!cgo
package mount
func mount(device, target, mType string, flag uintptr, data string) error {
panic("Not implemented")
}
func unmount(target string, flag int) error {
panic("Not implemented")
}

54
vendor/github.com/docker/docker/pkg/mount/mountinfo.go generated vendored Normal file
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package mount
// Info reveals information about a particular mounted filesystem. This
// struct is populated from the content in the /proc/<pid>/mountinfo file.
type Info struct {
// ID is a unique identifier of the mount (may be reused after umount).
ID int
// Parent indicates the ID of the mount parent (or of self for the top of the
// mount tree).
Parent int
// Major indicates one half of the device ID which identifies the device class.
Major int
// Minor indicates one half of the device ID which identifies a specific
// instance of device.
Minor int
// Root of the mount within the filesystem.
Root string
// Mountpoint indicates the mount point relative to the process's root.
Mountpoint string
// Opts represents mount-specific options.
Opts string
// Optional represents optional fields.
Optional string
// Fstype indicates the type of filesystem, such as EXT3.
Fstype string
// Source indicates filesystem specific information or "none".
Source string
// VfsOpts represents per super block options.
VfsOpts string
}
type byMountpoint []*Info
func (by byMountpoint) Len() int {
return len(by)
}
func (by byMountpoint) Less(i, j int) bool {
return by[i].Mountpoint < by[j].Mountpoint
}
func (by byMountpoint) Swap(i, j int) {
by[i], by[j] = by[j], by[i]
}

41
vendor/github.com/docker/docker/pkg/mount/mountinfo_freebsd.go generated vendored Normal file
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@ -0,0 +1,41 @@
package mount
/*
#include <sys/param.h>
#include <sys/ucred.h>
#include <sys/mount.h>
*/
import "C"
import (
"fmt"
"reflect"
"unsafe"
)
// Parse /proc/self/mountinfo because comparing Dev and ino does not work from
// bind mounts.
func parseMountTable() ([]*Info, error) {
var rawEntries *C.struct_statfs
count := int(C.getmntinfo(&rawEntries, C.MNT_WAIT))
if count == 0 {
return nil, fmt.Errorf("Failed to call getmntinfo")
}
var entries []C.struct_statfs
header := (*reflect.SliceHeader)(unsafe.Pointer(&entries))
header.Cap = count
header.Len = count
header.Data = uintptr(unsafe.Pointer(rawEntries))
var out []*Info
for _, entry := range entries {
var mountinfo Info
mountinfo.Mountpoint = C.GoString(&entry.f_mntonname[0])
mountinfo.Source = C.GoString(&entry.f_mntfromname[0])
mountinfo.Fstype = C.GoString(&entry.f_fstypename[0])
out = append(out, &mountinfo)
}
return out, nil
}

95
vendor/github.com/docker/docker/pkg/mount/mountinfo_linux.go generated vendored Normal file
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// +build linux
package mount
import (
"bufio"
"fmt"
"io"
"os"
"strings"
)
const (
/* 36 35 98:0 /mnt1 /mnt2 rw,noatime master:1 - ext3 /dev/root rw,errors=continue
(1)(2)(3) (4) (5) (6) (7) (8) (9) (10) (11)
(1) mount ID: unique identifier of the mount (may be reused after umount)
(2) parent ID: ID of parent (or of self for the top of the mount tree)
(3) major:minor: value of st_dev for files on filesystem
(4) root: root of the mount within the filesystem
(5) mount point: mount point relative to the process's root
(6) mount options: per mount options
(7) optional fields: zero or more fields of the form "tag[:value]"
(8) separator: marks the end of the optional fields
(9) filesystem type: name of filesystem of the form "type[.subtype]"
(10) mount source: filesystem specific information or "none"
(11) super options: per super block options*/
mountinfoFormat = "%d %d %d:%d %s %s %s %s"
)
// Parse /proc/self/mountinfo because comparing Dev and ino does not work from
// bind mounts
func parseMountTable() ([]*Info, error) {
f, err := os.Open("/proc/self/mountinfo")
if err != nil {
return nil, err
}
defer f.Close()
return parseInfoFile(f)
}
func parseInfoFile(r io.Reader) ([]*Info, error) {
var (
s = bufio.NewScanner(r)
out = []*Info{}
)
for s.Scan() {
if err := s.Err(); err != nil {
return nil, err
}
var (
p = &Info{}
text = s.Text()
optionalFields string
)
if _, err := fmt.Sscanf(text, mountinfoFormat,
&p.ID, &p.Parent, &p.Major, &p.Minor,
&p.Root, &p.Mountpoint, &p.Opts, &optionalFields); err != nil {
return nil, fmt.Errorf("Scanning '%s' failed: %s", text, err)
}
// Safe as mountinfo encodes mountpoints with spaces as \040.
index := strings.Index(text, " - ")
postSeparatorFields := strings.Fields(text[index+3:])
if len(postSeparatorFields) < 3 {
return nil, fmt.Errorf("Error found less than 3 fields post '-' in %q", text)
}
if optionalFields != "-" {
p.Optional = optionalFields
}
p.Fstype = postSeparatorFields[0]
p.Source = postSeparatorFields[1]
p.VfsOpts = strings.Join(postSeparatorFields[2:], " ")
out = append(out, p)
}
return out, nil
}
// PidMountInfo collects the mounts for a specific process ID. If the process
// ID is unknown, it is better to use `GetMounts` which will inspect
// "/proc/self/mountinfo" instead.
func PidMountInfo(pid int) ([]*Info, error) {
f, err := os.Open(fmt.Sprintf("/proc/%d/mountinfo", pid))
if err != nil {
return nil, err
}
defer f.Close()
return parseInfoFile(f)
}

37
vendor/github.com/docker/docker/pkg/mount/mountinfo_solaris.go generated vendored Normal file
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@ -0,0 +1,37 @@
// +build solaris,cgo
package mount
/*
#include <stdio.h>
#include <sys/mnttab.h>
*/
import "C"
import (
"fmt"
)
func parseMountTable() ([]*Info, error) {
mnttab := C.fopen(C.CString(C.MNTTAB), C.CString("r"))
if mnttab == nil {
return nil, fmt.Errorf("Failed to open %s", C.MNTTAB)
}
var out []*Info
var mp C.struct_mnttab
ret := C.getmntent(mnttab, &mp)
for ret == 0 {
var mountinfo Info
mountinfo.Mountpoint = C.GoString(mp.mnt_mountp)
mountinfo.Source = C.GoString(mp.mnt_special)
mountinfo.Fstype = C.GoString(mp.mnt_fstype)
mountinfo.Opts = C.GoString(mp.mnt_mntopts)
out = append(out, &mountinfo)
ret = C.getmntent(mnttab, &mp)
}
C.fclose(mnttab)
return out, nil
}

12
vendor/github.com/docker/docker/pkg/mount/mountinfo_unsupported.go generated vendored Normal file
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// +build !windows,!linux,!freebsd,!solaris freebsd,!cgo solaris,!cgo
package mount
import (
"fmt"
"runtime"
)
func parseMountTable() ([]*Info, error) {
return nil, fmt.Errorf("mount.parseMountTable is not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
}

6
vendor/github.com/docker/docker/pkg/mount/mountinfo_windows.go generated vendored Normal file
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@ -0,0 +1,6 @@
package mount
func parseMountTable() ([]*Info, error) {
// Do NOT return an error!
return nil, nil
}

69
vendor/github.com/docker/docker/pkg/mount/sharedsubtree_linux.go generated vendored Normal file
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// +build linux
package mount
// MakeShared ensures a mounted filesystem has the SHARED mount option enabled.
// See the supported options in flags.go for further reference.
func MakeShared(mountPoint string) error {
return ensureMountedAs(mountPoint, "shared")
}
// MakeRShared ensures a mounted filesystem has the RSHARED mount option enabled.
// See the supported options in flags.go for further reference.
func MakeRShared(mountPoint string) error {
return ensureMountedAs(mountPoint, "rshared")
}
// MakePrivate ensures a mounted filesystem has the PRIVATE mount option enabled.
// See the supported options in flags.go for further reference.
func MakePrivate(mountPoint string) error {
return ensureMountedAs(mountPoint, "private")
}
// MakeRPrivate ensures a mounted filesystem has the RPRIVATE mount option
// enabled. See the supported options in flags.go for further reference.
func MakeRPrivate(mountPoint string) error {
return ensureMountedAs(mountPoint, "rprivate")
}
// MakeSlave ensures a mounted filesystem has the SLAVE mount option enabled.
// See the supported options in flags.go for further reference.
func MakeSlave(mountPoint string) error {
return ensureMountedAs(mountPoint, "slave")
}
// MakeRSlave ensures a mounted filesystem has the RSLAVE mount option enabled.
// See the supported options in flags.go for further reference.
func MakeRSlave(mountPoint string) error {
return ensureMountedAs(mountPoint, "rslave")
}
// MakeUnbindable ensures a mounted filesystem has the UNBINDABLE mount option
// enabled. See the supported options in flags.go for further reference.
func MakeUnbindable(mountPoint string) error {
return ensureMountedAs(mountPoint, "unbindable")
}
// MakeRUnbindable ensures a mounted filesystem has the RUNBINDABLE mount
// option enabled. See the supported options in flags.go for further reference.
func MakeRUnbindable(mountPoint string) error {
return ensureMountedAs(mountPoint, "runbindable")
}
func ensureMountedAs(mountPoint, options string) error {
mounted, err := Mounted(mountPoint)
if err != nil {
return err
}
if !mounted {
if err := Mount(mountPoint, mountPoint, "none", "bind,rw"); err != nil {
return err
}
}
if _, err = Mounted(mountPoint); err != nil {
return err
}
return ForceMount("", mountPoint, "none", options)
}

58
vendor/github.com/docker/docker/pkg/mount/sharedsubtree_solaris.go generated vendored Normal file
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// +build solaris
package mount
// MakeShared ensures a mounted filesystem has the SHARED mount option enabled.
// See the supported options in flags.go for further reference.
func MakeShared(mountPoint string) error {
return ensureMountedAs(mountPoint, "shared")
}
// MakeRShared ensures a mounted filesystem has the RSHARED mount option enabled.
// See the supported options in flags.go for further reference.
func MakeRShared(mountPoint string) error {
return ensureMountedAs(mountPoint, "rshared")
}
// MakePrivate ensures a mounted filesystem has the PRIVATE mount option enabled.
// See the supported options in flags.go for further reference.
func MakePrivate(mountPoint string) error {
return ensureMountedAs(mountPoint, "private")
}
// MakeRPrivate ensures a mounted filesystem has the RPRIVATE mount option
// enabled. See the supported options in flags.go for further reference.
func MakeRPrivate(mountPoint string) error {
return ensureMountedAs(mountPoint, "rprivate")
}
// MakeSlave ensures a mounted filesystem has the SLAVE mount option enabled.
// See the supported options in flags.go for further reference.
func MakeSlave(mountPoint string) error {
return ensureMountedAs(mountPoint, "slave")
}
// MakeRSlave ensures a mounted filesystem has the RSLAVE mount option enabled.
// See the supported options in flags.go for further reference.
func MakeRSlave(mountPoint string) error {
return ensureMountedAs(mountPoint, "rslave")
}
// MakeUnbindable ensures a mounted filesystem has the UNBINDABLE mount option
// enabled. See the supported options in flags.go for further reference.
func MakeUnbindable(mountPoint string) error {
return ensureMountedAs(mountPoint, "unbindable")
}
// MakeRUnbindable ensures a mounted filesystem has the RUNBINDABLE mount
// option enabled. See the supported options in flags.go for further reference.
func MakeRUnbindable(mountPoint string) error {
return ensureMountedAs(mountPoint, "runbindable")
}
func ensureMountedAs(mountPoint, options string) error {
// TODO: Solaris does not support bind mounts.
// Evaluate lofs and also look at the relevant
// mount flags to be supported.
return nil
}

191
vendor/github.com/docker/docker/pkg/symlink/LICENSE.APACHE generated vendored Normal file
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Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
and distribution as defined by Sections 1 through 9 of this document.
"Licensor" shall mean the copyright owner or entity authorized by
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"Legal Entity" shall mean the union of the acting entity and all
other entities that control, are controlled by, or are under common
control with that entity. For the purposes of this definition,
"control" means (i) the power, direct or indirect, to cause the
direction or management of such entity, whether by contract or
otherwise, or (ii) ownership of fifty percent (50%) or more of the
outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship. For the purposes
of this License, Derivative Works shall not include works that remain
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"Contribution" shall mean any work of authorship, including
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communication on electronic mailing lists, source code control systems,
and issue tracking systems that are managed by, or on behalf of, the
Licensor for the purpose of discussing and improving the Work, but
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designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
subsequently incorporated within the Work.
2. Grant of Copyright License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
copyright license to reproduce, prepare Derivative Works of,
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Work and such Derivative Works in Source or Object form.
3. Grant of Patent License. Subject to the terms and conditions of
this License, each Contributor hereby grants to You a perpetual,
worldwide, non-exclusive, no-charge, royalty-free, irrevocable
(except as stated in this section) patent license to make, have made,
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where such license applies only to those patent claims licensable
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or a Contribution incorporated within the Work constitutes direct
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4. Redistribution. You may reproduce and distribute copies of the
Work or Derivative Works thereof in any medium, with or without
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meet the following conditions:
(a) You must give any other recipients of the Work or
Derivative Works a copy of this License; and
(b) You must cause any modified files to carry prominent notices
stating that You changed the files; and
(c) You must retain, in the Source form of any Derivative Works
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of the following places: within a NOTICE text file distributed
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within a display generated by the Derivative Works, if and
wherever such third-party notices normally appear. The contents
of the NOTICE file are for informational purposes only and
do not modify the License. You may add Your own attribution
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as modifying the License.
You may add Your own copyright statement to Your modifications and
may provide additional or different license terms and conditions
for use, reproduction, or distribution of Your modifications, or
for any such Derivative Works as a whole, provided Your use,
reproduction, and distribution of the Work otherwise complies with
the conditions stated in this License.
5. Submission of Contributions. Unless You explicitly state otherwise,
any Contribution intentionally submitted for inclusion in the Work
by You to the Licensor shall be under the terms and conditions of
this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
with Licensor regarding such Contributions.
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor,
except as required for reasonable and customary use in describing the
origin of the Work and reproducing the content of the NOTICE file.
7. Disclaimer of Warranty. Unless required by applicable law or
agreed to in writing, Licensor provides the Work (and each
Contributor provides its Contributions) on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied, including, without limitation, any warranties or conditions
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
Copyright 2014-2017 Docker, Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

27
vendor/github.com/docker/docker/pkg/symlink/LICENSE.BSD generated vendored Normal file
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Copyright (c) 2014-2017 The Docker & Go Authors. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

6
vendor/github.com/docker/docker/pkg/symlink/README.md generated vendored Normal file
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Package symlink implements EvalSymlinksInScope which is an extension of filepath.EvalSymlinks,
as well as a Windows long-path aware version of filepath.EvalSymlinks
from the [Go standard library](https://golang.org/pkg/path/filepath).
The code from filepath.EvalSymlinks has been adapted in fs.go.
Please read the LICENSE.BSD file that governs fs.go and LICENSE.APACHE for fs_test.go.

144
vendor/github.com/docker/docker/pkg/symlink/fs.go generated vendored Normal file
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// Copyright 2012 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE.BSD file.
// This code is a modified version of path/filepath/symlink.go from the Go standard library.
package symlink
import (
"bytes"
"errors"
"os"
"path/filepath"
"strings"
"github.com/docker/docker/pkg/system"
)
// FollowSymlinkInScope is a wrapper around evalSymlinksInScope that returns an
// absolute path. This function handles paths in a platform-agnostic manner.
func FollowSymlinkInScope(path, root string) (string, error) {
path, err := filepath.Abs(filepath.FromSlash(path))
if err != nil {
return "", err
}
root, err = filepath.Abs(filepath.FromSlash(root))
if err != nil {
return "", err
}
return evalSymlinksInScope(path, root)
}
// evalSymlinksInScope will evaluate symlinks in `path` within a scope `root` and return
// a result guaranteed to be contained within the scope `root`, at the time of the call.
// Symlinks in `root` are not evaluated and left as-is.
// Errors encountered while attempting to evaluate symlinks in path will be returned.
// Non-existing paths are valid and do not constitute an error.
// `path` has to contain `root` as a prefix, or else an error will be returned.
// Trying to break out from `root` does not constitute an error.
//
// Example:
// If /foo/bar -> /outside,
// FollowSymlinkInScope("/foo/bar", "/foo") == "/foo/outside" instead of "/outside"
//
// IMPORTANT: it is the caller's responsibility to call evalSymlinksInScope *after* relevant symlinks
// are created and not to create subsequently, additional symlinks that could potentially make a
// previously-safe path, unsafe. Example: if /foo/bar does not exist, evalSymlinksInScope("/foo/bar", "/foo")
// would return "/foo/bar". If one makes /foo/bar a symlink to /baz subsequently, then "/foo/bar" should
// no longer be considered safely contained in "/foo".
func evalSymlinksInScope(path, root string) (string, error) {
root = filepath.Clean(root)
if path == root {
return path, nil
}
if !strings.HasPrefix(path, root) {
return "", errors.New("evalSymlinksInScope: " + path + " is not in " + root)
}
const maxIter = 255
originalPath := path
// given root of "/a" and path of "/a/b/../../c" we want path to be "/b/../../c"
path = path[len(root):]
if root == string(filepath.Separator) {
path = string(filepath.Separator) + path
}
if !strings.HasPrefix(path, string(filepath.Separator)) {
return "", errors.New("evalSymlinksInScope: " + path + " is not in " + root)
}
path = filepath.Clean(path)
// consume path by taking each frontmost path element,
// expanding it if it's a symlink, and appending it to b
var b bytes.Buffer
// b here will always be considered to be the "current absolute path inside
// root" when we append paths to it, we also append a slash and use
// filepath.Clean after the loop to trim the trailing slash
for n := 0; path != ""; n++ {
if n > maxIter {
return "", errors.New("evalSymlinksInScope: too many links in " + originalPath)
}
// find next path component, p
i := strings.IndexRune(path, filepath.Separator)
var p string
if i == -1 {
p, path = path, ""
} else {
p, path = path[:i], path[i+1:]
}
if p == "" {
continue
}
// this takes a b.String() like "b/../" and a p like "c" and turns it
// into "/b/../c" which then gets filepath.Cleaned into "/c" and then
// root gets prepended and we Clean again (to remove any trailing slash
// if the first Clean gave us just "/")
cleanP := filepath.Clean(string(filepath.Separator) + b.String() + p)
if isDriveOrRoot(cleanP) {
// never Lstat "/" itself, or drive letters on Windows
b.Reset()
continue
}
fullP := filepath.Clean(root + cleanP)
fi, err := os.Lstat(fullP)
if os.IsNotExist(err) {
// if p does not exist, accept it
b.WriteString(p)
b.WriteRune(filepath.Separator)
continue
}
if err != nil {
return "", err
}
if fi.Mode()&os.ModeSymlink == 0 {
b.WriteString(p)
b.WriteRune(filepath.Separator)
continue
}
// it's a symlink, put it at the front of path
dest, err := os.Readlink(fullP)
if err != nil {
return "", err
}
if system.IsAbs(dest) {
b.Reset()
}
path = dest + string(filepath.Separator) + path
}
// see note above on "fullP := ..." for why this is double-cleaned and
// what's happening here
return filepath.Clean(root + filepath.Clean(string(filepath.Separator)+b.String())), nil
}
// EvalSymlinks returns the path name after the evaluation of any symbolic
// links.
// If path is relative the result will be relative to the current directory,
// unless one of the components is an absolute symbolic link.
// This version has been updated to support long paths prepended with `\\?\`.
func EvalSymlinks(path string) (string, error) {
return evalSymlinks(path)
}

15
vendor/github.com/docker/docker/pkg/symlink/fs_unix.go generated vendored Normal file
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// +build !windows
package symlink
import (
"path/filepath"
)
func evalSymlinks(path string) (string, error) {
return filepath.EvalSymlinks(path)
}
func isDriveOrRoot(p string) bool {
return p == string(filepath.Separator)
}

169
vendor/github.com/docker/docker/pkg/symlink/fs_windows.go generated vendored Normal file
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package symlink
import (
"bytes"
"errors"
"os"
"path/filepath"
"strings"
"syscall"
"github.com/docker/docker/pkg/longpath"
)
func toShort(path string) (string, error) {
p, err := syscall.UTF16FromString(path)
if err != nil {
return "", err
}
b := p // GetShortPathName says we can reuse buffer
n, err := syscall.GetShortPathName(&p[0], &b[0], uint32(len(b)))
if err != nil {
return "", err
}
if n > uint32(len(b)) {
b = make([]uint16, n)
if _, err = syscall.GetShortPathName(&p[0], &b[0], uint32(len(b))); err != nil {
return "", err
}
}
return syscall.UTF16ToString(b), nil
}
func toLong(path string) (string, error) {
p, err := syscall.UTF16FromString(path)
if err != nil {
return "", err
}
b := p // GetLongPathName says we can reuse buffer
n, err := syscall.GetLongPathName(&p[0], &b[0], uint32(len(b)))
if err != nil {
return "", err
}
if n > uint32(len(b)) {
b = make([]uint16, n)
n, err = syscall.GetLongPathName(&p[0], &b[0], uint32(len(b)))
if err != nil {
return "", err
}
}
b = b[:n]
return syscall.UTF16ToString(b), nil
}
func evalSymlinks(path string) (string, error) {
path, err := walkSymlinks(path)
if err != nil {
return "", err
}
p, err := toShort(path)
if err != nil {
return "", err
}
p, err = toLong(p)
if err != nil {
return "", err
}
// syscall.GetLongPathName does not change the case of the drive letter,
// but the result of EvalSymlinks must be unique, so we have
// EvalSymlinks(`c:\a`) == EvalSymlinks(`C:\a`).
// Make drive letter upper case.
if len(p) >= 2 && p[1] == ':' && 'a' <= p[0] && p[0] <= 'z' {
p = string(p[0]+'A'-'a') + p[1:]
} else if len(p) >= 6 && p[5] == ':' && 'a' <= p[4] && p[4] <= 'z' {
p = p[:3] + string(p[4]+'A'-'a') + p[5:]
}
return filepath.Clean(p), nil
}
const utf8RuneSelf = 0x80
func walkSymlinks(path string) (string, error) {
const maxIter = 255
originalPath := path
// consume path by taking each frontmost path element,
// expanding it if it's a symlink, and appending it to b
var b bytes.Buffer
for n := 0; path != ""; n++ {
if n > maxIter {
return "", errors.New("EvalSymlinks: too many links in " + originalPath)
}
// A path beginning with `\\?\` represents the root, so automatically
// skip that part and begin processing the next segment.
if strings.HasPrefix(path, longpath.Prefix) {
b.WriteString(longpath.Prefix)
path = path[4:]
continue
}
// find next path component, p
var i = -1
for j, c := range path {
if c < utf8RuneSelf && os.IsPathSeparator(uint8(c)) {
i = j
break
}
}
var p string
if i == -1 {
p, path = path, ""
} else {
p, path = path[:i], path[i+1:]
}
if p == "" {
if b.Len() == 0 {
// must be absolute path
b.WriteRune(filepath.Separator)
}
continue
}
// If this is the first segment after the long path prefix, accept the
// current segment as a volume root or UNC share and move on to the next.
if b.String() == longpath.Prefix {
b.WriteString(p)
b.WriteRune(filepath.Separator)
continue
}
fi, err := os.Lstat(b.String() + p)
if err != nil {
return "", err
}
if fi.Mode()&os.ModeSymlink == 0 {
b.WriteString(p)
if path != "" || (b.Len() == 2 && len(p) == 2 && p[1] == ':') {
b.WriteRune(filepath.Separator)
}
continue
}
// it's a symlink, put it at the front of path
dest, err := os.Readlink(b.String() + p)
if err != nil {
return "", err
}
if filepath.IsAbs(dest) || os.IsPathSeparator(dest[0]) {
b.Reset()
}
path = dest + string(filepath.Separator) + path
}
return filepath.Clean(b.String()), nil
}
func isDriveOrRoot(p string) bool {
if p == string(filepath.Separator) {
return true
}
length := len(p)
if length >= 2 {
if p[length-1] == ':' && (('a' <= p[length-2] && p[length-2] <= 'z') || ('A' <= p[length-2] && p[length-2] <= 'Z')) {
return true
}
}
return false
}

35
vendor/github.com/docker/docker/pkg/system/chtimes.go generated vendored Normal file
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package system
import (
"os"
"time"
)
// Chtimes changes the access time and modified time of a file at the given path
func Chtimes(name string, atime time.Time, mtime time.Time) error {
unixMinTime := time.Unix(0, 0)
unixMaxTime := maxTime
// If the modified time is prior to the Unix Epoch, or after the
// end of Unix Time, os.Chtimes has undefined behavior
// default to Unix Epoch in this case, just in case
if atime.Before(unixMinTime) || atime.After(unixMaxTime) {
atime = unixMinTime
}
if mtime.Before(unixMinTime) || mtime.After(unixMaxTime) {
mtime = unixMinTime
}
if err := os.Chtimes(name, atime, mtime); err != nil {
return err
}
// Take platform specific action for setting create time.
if err := setCTime(name, mtime); err != nil {
return err
}
return nil
}

14
vendor/github.com/docker/docker/pkg/system/chtimes_unix.go generated vendored Normal file
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@ -0,0 +1,14 @@
// +build !windows
package system
import (
"time"
)
//setCTime will set the create time on a file. On Unix, the create
//time is updated as a side effect of setting the modified time, so
//no action is required.
func setCTime(path string, ctime time.Time) error {
return nil
}

27
vendor/github.com/docker/docker/pkg/system/chtimes_windows.go generated vendored Normal file
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@ -0,0 +1,27 @@
// +build windows
package system
import (
"syscall"
"time"
)
//setCTime will set the create time on a file. On Windows, this requires
//calling SetFileTime and explicitly including the create time.
func setCTime(path string, ctime time.Time) error {
ctimespec := syscall.NsecToTimespec(ctime.UnixNano())
pathp, e := syscall.UTF16PtrFromString(path)
if e != nil {
return e
}
h, e := syscall.CreateFile(pathp,
syscall.FILE_WRITE_ATTRIBUTES, syscall.FILE_SHARE_WRITE, nil,
syscall.OPEN_EXISTING, syscall.FILE_FLAG_BACKUP_SEMANTICS, 0)
if e != nil {
return e
}
defer syscall.Close(h)
c := syscall.NsecToFiletime(syscall.TimespecToNsec(ctimespec))
return syscall.SetFileTime(h, &c, nil, nil)
}

10
vendor/github.com/docker/docker/pkg/system/errors.go generated vendored Normal file
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package system
import (
"errors"
)
var (
// ErrNotSupportedPlatform means the platform is not supported.
ErrNotSupportedPlatform = errors.New("platform and architecture is not supported")
)

85
vendor/github.com/docker/docker/pkg/system/events_windows.go generated vendored Normal file
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package system
// This file implements syscalls for Win32 events which are not implemented
// in golang.
import (
"syscall"
"unsafe"
"golang.org/x/sys/windows"
)
var (
procCreateEvent = modkernel32.NewProc("CreateEventW")
procOpenEvent = modkernel32.NewProc("OpenEventW")
procSetEvent = modkernel32.NewProc("SetEvent")
procResetEvent = modkernel32.NewProc("ResetEvent")
procPulseEvent = modkernel32.NewProc("PulseEvent")
)
// CreateEvent implements win32 CreateEventW func in golang. It will create an event object.
func CreateEvent(eventAttributes *syscall.SecurityAttributes, manualReset bool, initialState bool, name string) (handle syscall.Handle, err error) {
namep, _ := syscall.UTF16PtrFromString(name)
var _p1 uint32
if manualReset {
_p1 = 1
}
var _p2 uint32
if initialState {
_p2 = 1
}
r0, _, e1 := procCreateEvent.Call(uintptr(unsafe.Pointer(eventAttributes)), uintptr(_p1), uintptr(_p2), uintptr(unsafe.Pointer(namep)))
use(unsafe.Pointer(namep))
handle = syscall.Handle(r0)
if handle == syscall.InvalidHandle {
err = e1
}
return
}
// OpenEvent implements win32 OpenEventW func in golang. It opens an event object.
func OpenEvent(desiredAccess uint32, inheritHandle bool, name string) (handle syscall.Handle, err error) {
namep, _ := syscall.UTF16PtrFromString(name)
var _p1 uint32
if inheritHandle {
_p1 = 1
}
r0, _, e1 := procOpenEvent.Call(uintptr(desiredAccess), uintptr(_p1), uintptr(unsafe.Pointer(namep)))
use(unsafe.Pointer(namep))
handle = syscall.Handle(r0)
if handle == syscall.InvalidHandle {
err = e1
}
return
}
// SetEvent implements win32 SetEvent func in golang.
func SetEvent(handle syscall.Handle) (err error) {
return setResetPulse(handle, procSetEvent)
}
// ResetEvent implements win32 ResetEvent func in golang.
func ResetEvent(handle syscall.Handle) (err error) {
return setResetPulse(handle, procResetEvent)
}
// PulseEvent implements win32 PulseEvent func in golang.
func PulseEvent(handle syscall.Handle) (err error) {
return setResetPulse(handle, procPulseEvent)
}
func setResetPulse(handle syscall.Handle, proc *windows.LazyProc) (err error) {
r0, _, _ := proc.Call(uintptr(handle))
if r0 != 0 {
err = syscall.Errno(r0)
}
return
}
var temp unsafe.Pointer
// use ensures a variable is kept alive without the GC freeing while still needed
func use(p unsafe.Pointer) {
temp = p
}

33
vendor/github.com/docker/docker/pkg/system/exitcode.go generated vendored Normal file
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package system
import (
"fmt"
"os/exec"
"syscall"
)
// GetExitCode returns the ExitStatus of the specified error if its type is
// exec.ExitError, returns 0 and an error otherwise.
func GetExitCode(err error) (int, error) {
exitCode := 0
if exiterr, ok := err.(*exec.ExitError); ok {
if procExit, ok := exiterr.Sys().(syscall.WaitStatus); ok {
return procExit.ExitStatus(), nil
}
}
return exitCode, fmt.Errorf("failed to get exit code")
}
// ProcessExitCode process the specified error and returns the exit status code
// if the error was of type exec.ExitError, returns nothing otherwise.
func ProcessExitCode(err error) (exitCode int) {
if err != nil {
var exiterr error
if exitCode, exiterr = GetExitCode(err); exiterr != nil {
// TODO: Fix this so we check the error's text.
// we've failed to retrieve exit code, so we set it to 127
exitCode = 127
}
}
return
}

67
vendor/github.com/docker/docker/pkg/system/filesys.go generated vendored Normal file
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// +build !windows
package system
import (
"io/ioutil"
"os"
"path/filepath"
)
// MkdirAllWithACL is a wrapper for MkdirAll on unix systems.
func MkdirAllWithACL(path string, perm os.FileMode, sddl string) error {
return MkdirAll(path, perm, sddl)
}
// MkdirAll creates a directory named path along with any necessary parents,
// with permission specified by attribute perm for all dir created.
func MkdirAll(path string, perm os.FileMode, sddl string) error {
return os.MkdirAll(path, perm)
}
// IsAbs is a platform-specific wrapper for filepath.IsAbs.
func IsAbs(path string) bool {
return filepath.IsAbs(path)
}
// The functions below here are wrappers for the equivalents in the os and ioutils packages.
// They are passthrough on Unix platforms, and only relevant on Windows.
// CreateSequential creates the named file with mode 0666 (before umask), truncating
// it if it already exists. If successful, methods on the returned
// File can be used for I/O; the associated file descriptor has mode
// O_RDWR.
// If there is an error, it will be of type *PathError.
func CreateSequential(name string) (*os.File, error) {
return os.Create(name)
}
// OpenSequential opens the named file for reading. If successful, methods on
// the returned file can be used for reading; the associated file
// descriptor has mode O_RDONLY.
// If there is an error, it will be of type *PathError.
func OpenSequential(name string) (*os.File, error) {
return os.Open(name)
}
// OpenFileSequential is the generalized open call; most users will use Open
// or Create instead. It opens the named file with specified flag
// (O_RDONLY etc.) and perm, (0666 etc.) if applicable. If successful,
// methods on the returned File can be used for I/O.
// If there is an error, it will be of type *PathError.
func OpenFileSequential(name string, flag int, perm os.FileMode) (*os.File, error) {
return os.OpenFile(name, flag, perm)
}
// TempFileSequential creates a new temporary file in the directory dir
// with a name beginning with prefix, opens the file for reading
// and writing, and returns the resulting *os.File.
// If dir is the empty string, TempFile uses the default directory
// for temporary files (see os.TempDir).
// Multiple programs calling TempFile simultaneously
// will not choose the same file. The caller can use f.Name()
// to find the pathname of the file. It is the caller's responsibility
// to remove the file when no longer needed.
func TempFileSequential(dir, prefix string) (f *os.File, err error) {
return ioutil.TempFile(dir, prefix)
}

298
vendor/github.com/docker/docker/pkg/system/filesys_windows.go generated vendored Normal file
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// +build windows
package system
import (
"os"
"path/filepath"
"regexp"
"strconv"
"strings"
"sync"
"syscall"
"time"
"unsafe"
winio "github.com/Microsoft/go-winio"
)
const (
// SddlAdministratorsLocalSystem is local administrators plus NT AUTHORITY\System
SddlAdministratorsLocalSystem = "D:P(A;OICI;GA;;;BA)(A;OICI;GA;;;SY)"
// SddlNtvmAdministratorsLocalSystem is NT VIRTUAL MACHINE\Virtual Machines plus local administrators plus NT AUTHORITY\System
SddlNtvmAdministratorsLocalSystem = "D:P(A;OICI;GA;;;S-1-5-83-0)(A;OICI;GA;;;BA)(A;OICI;GA;;;SY)"
)
// MkdirAllWithACL is a wrapper for MkdirAll that creates a directory
// with an appropriate SDDL defined ACL.
func MkdirAllWithACL(path string, perm os.FileMode, sddl string) error {
return mkdirall(path, true, sddl)
}
// MkdirAll implementation that is volume path aware for Windows.
func MkdirAll(path string, _ os.FileMode, sddl string) error {
return mkdirall(path, false, sddl)
}
// mkdirall is a custom version of os.MkdirAll modified for use on Windows
// so that it is both volume path aware, and can create a directory with
// a DACL.
func mkdirall(path string, applyACL bool, sddl string) error {
if re := regexp.MustCompile(`^\\\\\?\\Volume{[a-z0-9-]+}$`); re.MatchString(path) {
return nil
}
// The rest of this method is largely copied from os.MkdirAll and should be kept
// as-is to ensure compatibility.
// Fast path: if we can tell whether path is a directory or file, stop with success or error.
dir, err := os.Stat(path)
if err == nil {
if dir.IsDir() {
return nil
}
return &os.PathError{
Op: "mkdir",
Path: path,
Err: syscall.ENOTDIR,
}
}
// Slow path: make sure parent exists and then call Mkdir for path.
i := len(path)
for i > 0 && os.IsPathSeparator(path[i-1]) { // Skip trailing path separator.
i--
}
j := i
for j > 0 && !os.IsPathSeparator(path[j-1]) { // Scan backward over element.
j--
}
if j > 1 {
// Create parent
err = mkdirall(path[0:j-1], false, sddl)
if err != nil {
return err
}
}
// Parent now exists; invoke os.Mkdir or mkdirWithACL and use its result.
if applyACL {
err = mkdirWithACL(path, sddl)
} else {
err = os.Mkdir(path, 0)
}
if err != nil {
// Handle arguments like "foo/." by
// double-checking that directory doesn't exist.
dir, err1 := os.Lstat(path)
if err1 == nil && dir.IsDir() {
return nil
}
return err
}
return nil
}
// mkdirWithACL creates a new directory. If there is an error, it will be of
// type *PathError. .
//
// This is a modified and combined version of os.Mkdir and syscall.Mkdir
// in golang to cater for creating a directory am ACL permitting full
// access, with inheritance, to any subfolder/file for Built-in Administrators
// and Local System.
func mkdirWithACL(name string, sddl string) error {
sa := syscall.SecurityAttributes{Length: 0}
sd, err := winio.SddlToSecurityDescriptor(sddl)
if err != nil {
return &os.PathError{Op: "mkdir", Path: name, Err: err}
}
sa.Length = uint32(unsafe.Sizeof(sa))
sa.InheritHandle = 1
sa.SecurityDescriptor = uintptr(unsafe.Pointer(&sd[0]))
namep, err := syscall.UTF16PtrFromString(name)
if err != nil {
return &os.PathError{Op: "mkdir", Path: name, Err: err}
}
e := syscall.CreateDirectory(namep, &sa)
if e != nil {
return &os.PathError{Op: "mkdir", Path: name, Err: e}
}
return nil
}
// IsAbs is a platform-specific wrapper for filepath.IsAbs. On Windows,
// golang filepath.IsAbs does not consider a path \windows\system32 as absolute
// as it doesn't start with a drive-letter/colon combination. However, in
// docker we need to verify things such as WORKDIR /windows/system32 in
// a Dockerfile (which gets translated to \windows\system32 when being processed
// by the daemon. This SHOULD be treated as absolute from a docker processing
// perspective.
func IsAbs(path string) bool {
if !filepath.IsAbs(path) {
if !strings.HasPrefix(path, string(os.PathSeparator)) {
return false
}
}
return true
}
// The origin of the functions below here are the golang OS and syscall packages,
// slightly modified to only cope with files, not directories due to the
// specific use case.
//
// The alteration is to allow a file on Windows to be opened with
// FILE_FLAG_SEQUENTIAL_SCAN (particular for docker load), to avoid eating
// the standby list, particularly when accessing large files such as layer.tar.
// CreateSequential creates the named file with mode 0666 (before umask), truncating
// it if it already exists. If successful, methods on the returned
// File can be used for I/O; the associated file descriptor has mode
// O_RDWR.
// If there is an error, it will be of type *PathError.
func CreateSequential(name string) (*os.File, error) {
return OpenFileSequential(name, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0)
}
// OpenSequential opens the named file for reading. If successful, methods on
// the returned file can be used for reading; the associated file
// descriptor has mode O_RDONLY.
// If there is an error, it will be of type *PathError.
func OpenSequential(name string) (*os.File, error) {
return OpenFileSequential(name, os.O_RDONLY, 0)
}
// OpenFileSequential is the generalized open call; most users will use Open
// or Create instead.
// If there is an error, it will be of type *PathError.
func OpenFileSequential(name string, flag int, _ os.FileMode) (*os.File, error) {
if name == "" {
return nil, &os.PathError{Op: "open", Path: name, Err: syscall.ENOENT}
}
r, errf := syscallOpenFileSequential(name, flag, 0)
if errf == nil {
return r, nil
}
return nil, &os.PathError{Op: "open", Path: name, Err: errf}
}
func syscallOpenFileSequential(name string, flag int, _ os.FileMode) (file *os.File, err error) {
r, e := syscallOpenSequential(name, flag|syscall.O_CLOEXEC, 0)
if e != nil {
return nil, e
}
return os.NewFile(uintptr(r), name), nil
}
func makeInheritSa() *syscall.SecurityAttributes {
var sa syscall.SecurityAttributes
sa.Length = uint32(unsafe.Sizeof(sa))
sa.InheritHandle = 1
return &sa
}
func syscallOpenSequential(path string, mode int, _ uint32) (fd syscall.Handle, err error) {
if len(path) == 0 {
return syscall.InvalidHandle, syscall.ERROR_FILE_NOT_FOUND
}
pathp, err := syscall.UTF16PtrFromString(path)
if err != nil {
return syscall.InvalidHandle, err
}
var access uint32
switch mode & (syscall.O_RDONLY | syscall.O_WRONLY | syscall.O_RDWR) {
case syscall.O_RDONLY:
access = syscall.GENERIC_READ
case syscall.O_WRONLY:
access = syscall.GENERIC_WRITE
case syscall.O_RDWR:
access = syscall.GENERIC_READ | syscall.GENERIC_WRITE
}
if mode&syscall.O_CREAT != 0 {
access |= syscall.GENERIC_WRITE
}
if mode&syscall.O_APPEND != 0 {
access &^= syscall.GENERIC_WRITE
access |= syscall.FILE_APPEND_DATA
}
sharemode := uint32(syscall.FILE_SHARE_READ | syscall.FILE_SHARE_WRITE)
var sa *syscall.SecurityAttributes
if mode&syscall.O_CLOEXEC == 0 {
sa = makeInheritSa()
}
var createmode uint32
switch {
case mode&(syscall.O_CREAT|syscall.O_EXCL) == (syscall.O_CREAT | syscall.O_EXCL):
createmode = syscall.CREATE_NEW
case mode&(syscall.O_CREAT|syscall.O_TRUNC) == (syscall.O_CREAT | syscall.O_TRUNC):
createmode = syscall.CREATE_ALWAYS
case mode&syscall.O_CREAT == syscall.O_CREAT:
createmode = syscall.OPEN_ALWAYS
case mode&syscall.O_TRUNC == syscall.O_TRUNC:
createmode = syscall.TRUNCATE_EXISTING
default:
createmode = syscall.OPEN_EXISTING
}
// Use FILE_FLAG_SEQUENTIAL_SCAN rather than FILE_ATTRIBUTE_NORMAL as implemented in golang.
//https://msdn.microsoft.com/en-us/library/windows/desktop/aa363858(v=vs.85).aspx
const fileFlagSequentialScan = 0x08000000 // FILE_FLAG_SEQUENTIAL_SCAN
h, e := syscall.CreateFile(pathp, access, sharemode, sa, createmode, fileFlagSequentialScan, 0)
return h, e
}
// Helpers for TempFileSequential
var rand uint32
var randmu sync.Mutex
func reseed() uint32 {
return uint32(time.Now().UnixNano() + int64(os.Getpid()))
}
func nextSuffix() string {
randmu.Lock()
r := rand
if r == 0 {
r = reseed()
}
r = r*1664525 + 1013904223 // constants from Numerical Recipes
rand = r
randmu.Unlock()
return strconv.Itoa(int(1e9 + r%1e9))[1:]
}
// TempFileSequential is a copy of ioutil.TempFile, modified to use sequential
// file access. Below is the original comment from golang:
// TempFile creates a new temporary file in the directory dir
// with a name beginning with prefix, opens the file for reading
// and writing, and returns the resulting *os.File.
// If dir is the empty string, TempFile uses the default directory
// for temporary files (see os.TempDir).
// Multiple programs calling TempFile simultaneously
// will not choose the same file. The caller can use f.Name()
// to find the pathname of the file. It is the caller's responsibility
// to remove the file when no longer needed.
func TempFileSequential(dir, prefix string) (f *os.File, err error) {
if dir == "" {
dir = os.TempDir()
}
nconflict := 0
for i := 0; i < 10000; i++ {
name := filepath.Join(dir, prefix+nextSuffix())
f, err = OpenFileSequential(name, os.O_RDWR|os.O_CREATE|os.O_EXCL, 0600)
if os.IsExist(err) {
if nconflict++; nconflict > 10 {
randmu.Lock()
rand = reseed()
randmu.Unlock()
}
continue
}
break
}
return
}

22
vendor/github.com/docker/docker/pkg/system/init.go generated vendored Normal file
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package system
import (
"syscall"
"time"
"unsafe"
)
// Used by chtimes
var maxTime time.Time
func init() {
// chtimes initialization
if unsafe.Sizeof(syscall.Timespec{}.Nsec) == 8 {
// This is a 64 bit timespec
// os.Chtimes limits time to the following
maxTime = time.Unix(0, 1<<63-1)
} else {
// This is a 32 bit timespec
maxTime = time.Unix(1<<31-1, 0)
}
}

17
vendor/github.com/docker/docker/pkg/system/init_windows.go generated vendored Normal file
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package system
import "os"
// LCOWSupported determines if Linux Containers on Windows are supported.
// Note: This feature is in development (06/17) and enabled through an
// environment variable. At a future time, it will be enabled based
// on build number. @jhowardmsft
var lcowSupported = false
func init() {
// LCOW initialization
if os.Getenv("LCOW_SUPPORTED") != "" {
lcowSupported = true
}
}

8
vendor/github.com/docker/docker/pkg/system/lcow_unix.go generated vendored Normal file
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// +build !windows
package system
// LCOWSupported returns true if Linux containers on Windows are supported.
func LCOWSupported() bool {
return false
}

6
vendor/github.com/docker/docker/pkg/system/lcow_windows.go generated vendored Normal file
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package system
// LCOWSupported returns true if Linux containers on Windows are supported.
func LCOWSupported() bool {
return lcowSupported
}

17
vendor/github.com/docker/docker/pkg/system/lstat_unix.go generated vendored Normal file
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// +build !windows
package system
import "syscall"
// Lstat takes a path to a file and returns
// a system.StatT type pertaining to that file.
//
// Throws an error if the file does not exist
func Lstat(path string) (*StatT, error) {
s := &syscall.Stat_t{}
if err := syscall.Lstat(path, s); err != nil {
return nil, err
}
return fromStatT(s)
}

14
vendor/github.com/docker/docker/pkg/system/lstat_windows.go generated vendored Normal file
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package system
import "os"
// Lstat calls os.Lstat to get a fileinfo interface back.
// This is then copied into our own locally defined structure.
func Lstat(path string) (*StatT, error) {
fi, err := os.Lstat(path)
if err != nil {
return nil, err
}
return fromStatT(&fi)
}

17
vendor/github.com/docker/docker/pkg/system/meminfo.go generated vendored Normal file
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package system
// MemInfo contains memory statistics of the host system.
type MemInfo struct {
// Total usable RAM (i.e. physical RAM minus a few reserved bits and the
// kernel binary code).
MemTotal int64
// Amount of free memory.
MemFree int64
// Total amount of swap space available.
SwapTotal int64
// Amount of swap space that is currently unused.
SwapFree int64
}

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vendor/github.com/docker/docker/pkg/system/meminfo_linux.go generated vendored Normal file
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package system
import (
"bufio"
"io"
"os"
"strconv"
"strings"
"github.com/docker/go-units"
)
// ReadMemInfo retrieves memory statistics of the host system and returns a
// MemInfo type.
func ReadMemInfo() (*MemInfo, error) {
file, err := os.Open("/proc/meminfo")
if err != nil {
return nil, err
}
defer file.Close()
return parseMemInfo(file)
}
// parseMemInfo parses the /proc/meminfo file into
// a MemInfo object given an io.Reader to the file.
// Throws error if there are problems reading from the file
func parseMemInfo(reader io.Reader) (*MemInfo, error) {
meminfo := &MemInfo{}
scanner := bufio.NewScanner(reader)
for scanner.Scan() {
// Expected format: ["MemTotal:", "1234", "kB"]
parts := strings.Fields(scanner.Text())
// Sanity checks: Skip malformed entries.
if len(parts) < 3 || parts[2] != "kB" {
continue
}
// Convert to bytes.
size, err := strconv.Atoi(parts[1])
if err != nil {
continue
}
bytes := int64(size) * units.KiB
switch parts[0] {
case "MemTotal:":
meminfo.MemTotal = bytes
case "MemFree:":
meminfo.MemFree = bytes
case "SwapTotal:":
meminfo.SwapTotal = bytes
case "SwapFree:":
meminfo.SwapFree = bytes
}
}
// Handle errors that may have occurred during the reading of the file.
if err := scanner.Err(); err != nil {
return nil, err
}
return meminfo, nil
}

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vendor/github.com/docker/docker/pkg/system/meminfo_solaris.go generated vendored Normal file
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// +build solaris,cgo
package system
import (
"fmt"
"unsafe"
)
// #cgo CFLAGS: -std=c99
// #cgo LDFLAGS: -lkstat
// #include <unistd.h>
// #include <stdlib.h>
// #include <stdio.h>
// #include <kstat.h>
// #include <sys/swap.h>
// #include <sys/param.h>
// struct swaptable *allocSwaptable(int num) {
// struct swaptable *st;
// struct swapent *swapent;
// st = (struct swaptable *)malloc(num * sizeof(swapent_t) + sizeof (int));
// swapent = st->swt_ent;
// for (int i = 0; i < num; i++,swapent++) {
// swapent->ste_path = (char *)malloc(MAXPATHLEN * sizeof (char));
// }
// st->swt_n = num;
// return st;
//}
// void freeSwaptable (struct swaptable *st) {
// struct swapent *swapent = st->swt_ent;
// for (int i = 0; i < st->swt_n; i++,swapent++) {
// free(swapent->ste_path);
// }
// free(st);
// }
// swapent_t getSwapEnt(swapent_t *ent, int i) {
// return ent[i];
// }
// int64_t getPpKernel() {
// int64_t pp_kernel = 0;
// kstat_ctl_t *ksc;
// kstat_t *ks;
// kstat_named_t *knp;
// kid_t kid;
//
// if ((ksc = kstat_open()) == NULL) {
// return -1;
// }
// if ((ks = kstat_lookup(ksc, "unix", 0, "system_pages")) == NULL) {
// return -1;
// }
// if (((kid = kstat_read(ksc, ks, NULL)) == -1) ||
// ((knp = kstat_data_lookup(ks, "pp_kernel")) == NULL)) {
// return -1;
// }
// switch (knp->data_type) {
// case KSTAT_DATA_UINT64:
// pp_kernel = knp->value.ui64;
// break;
// case KSTAT_DATA_UINT32:
// pp_kernel = knp->value.ui32;
// break;
// }
// pp_kernel *= sysconf(_SC_PAGESIZE);
// return (pp_kernel > 0 ? pp_kernel : -1);
// }
import "C"
// Get the system memory info using sysconf same as prtconf
func getTotalMem() int64 {
pagesize := C.sysconf(C._SC_PAGESIZE)
npages := C.sysconf(C._SC_PHYS_PAGES)
return int64(pagesize * npages)
}
func getFreeMem() int64 {
pagesize := C.sysconf(C._SC_PAGESIZE)
npages := C.sysconf(C._SC_AVPHYS_PAGES)
return int64(pagesize * npages)
}
// ReadMemInfo retrieves memory statistics of the host system and returns a
// MemInfo type.
func ReadMemInfo() (*MemInfo, error) {
ppKernel := C.getPpKernel()
MemTotal := getTotalMem()
MemFree := getFreeMem()
SwapTotal, SwapFree, err := getSysSwap()
if ppKernel < 0 || MemTotal < 0 || MemFree < 0 || SwapTotal < 0 ||
SwapFree < 0 {
return nil, fmt.Errorf("error getting system memory info %v\n", err)
}
meminfo := &MemInfo{}
// Total memory is total physical memory less than memory locked by kernel
meminfo.MemTotal = MemTotal - int64(ppKernel)
meminfo.MemFree = MemFree
meminfo.SwapTotal = SwapTotal
meminfo.SwapFree = SwapFree
return meminfo, nil
}
func getSysSwap() (int64, int64, error) {
var tSwap int64
var fSwap int64
var diskblksPerPage int64
num, err := C.swapctl(C.SC_GETNSWP, nil)
if err != nil {
return -1, -1, err
}
st := C.allocSwaptable(num)
_, err = C.swapctl(C.SC_LIST, unsafe.Pointer(st))
if err != nil {
C.freeSwaptable(st)
return -1, -1, err
}
diskblksPerPage = int64(C.sysconf(C._SC_PAGESIZE) >> C.DEV_BSHIFT)
for i := 0; i < int(num); i++ {
swapent := C.getSwapEnt(&st.swt_ent[0], C.int(i))
tSwap += int64(swapent.ste_pages) * diskblksPerPage
fSwap += int64(swapent.ste_free) * diskblksPerPage
}
C.freeSwaptable(st)
return tSwap, fSwap, nil
}

8
vendor/github.com/docker/docker/pkg/system/meminfo_unsupported.go generated vendored Normal file
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@ -0,0 +1,8 @@
// +build !linux,!windows,!solaris
package system
// ReadMemInfo is not supported on platforms other than linux and windows.
func ReadMemInfo() (*MemInfo, error) {
return nil, ErrNotSupportedPlatform
}

45
vendor/github.com/docker/docker/pkg/system/meminfo_windows.go generated vendored Normal file
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@ -0,0 +1,45 @@
package system
import (
"unsafe"
"golang.org/x/sys/windows"
)
var (
modkernel32 = windows.NewLazySystemDLL("kernel32.dll")
procGlobalMemoryStatusEx = modkernel32.NewProc("GlobalMemoryStatusEx")
)
// https://msdn.microsoft.com/en-us/library/windows/desktop/aa366589(v=vs.85).aspx
// https://msdn.microsoft.com/en-us/library/windows/desktop/aa366770(v=vs.85).aspx
type memorystatusex struct {
dwLength uint32
dwMemoryLoad uint32
ullTotalPhys uint64
ullAvailPhys uint64
ullTotalPageFile uint64
ullAvailPageFile uint64
ullTotalVirtual uint64
ullAvailVirtual uint64
ullAvailExtendedVirtual uint64
}
// ReadMemInfo retrieves memory statistics of the host system and returns a
// MemInfo type.
func ReadMemInfo() (*MemInfo, error) {
msi := &memorystatusex{
dwLength: 64,
}
r1, _, _ := procGlobalMemoryStatusEx.Call(uintptr(unsafe.Pointer(msi)))
if r1 == 0 {
return &MemInfo{}, nil
}
return &MemInfo{
MemTotal: int64(msi.ullTotalPhys),
MemFree: int64(msi.ullAvailPhys),
SwapTotal: int64(msi.ullTotalPageFile),
SwapFree: int64(msi.ullAvailPageFile),
}, nil
}

22
vendor/github.com/docker/docker/pkg/system/mknod.go generated vendored Normal file
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@ -0,0 +1,22 @@
// +build !windows
package system
import (
"syscall"
)
// Mknod creates a filesystem node (file, device special file or named pipe) named path
// with attributes specified by mode and dev.
func Mknod(path string, mode uint32, dev int) error {
return syscall.Mknod(path, mode, dev)
}
// Mkdev is used to build the value of linux devices (in /dev/) which specifies major
// and minor number of the newly created device special file.
// Linux device nodes are a bit weird due to backwards compat with 16 bit device nodes.
// They are, from low to high: the lower 8 bits of the minor, then 12 bits of the major,
// then the top 12 bits of the minor.
func Mkdev(major int64, minor int64) uint32 {
return uint32(((minor & 0xfff00) << 12) | ((major & 0xfff) << 8) | (minor & 0xff))
}

13
vendor/github.com/docker/docker/pkg/system/mknod_windows.go generated vendored Normal file
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@ -0,0 +1,13 @@
// +build windows
package system
// Mknod is not implemented on Windows.
func Mknod(path string, mode uint32, dev int) error {
return ErrNotSupportedPlatform
}
// Mkdev is not implemented on Windows.
func Mkdev(major int64, minor int64) uint32 {
panic("Mkdev not implemented on Windows.")
}

21
vendor/github.com/docker/docker/pkg/system/path.go generated vendored Normal file
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@ -0,0 +1,21 @@
package system
import "runtime"
const defaultUnixPathEnv = "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
// DefaultPathEnv is unix style list of directories to search for
// executables. Each directory is separated from the next by a colon
// ':' character .
func DefaultPathEnv(platform string) string {
if runtime.GOOS == "windows" {
if platform != runtime.GOOS && LCOWSupported() {
return defaultUnixPathEnv
}
// Deliberately empty on Windows containers on Windows as the default path will be set by
// the container. Docker has no context of what the default path should be.
return ""
}
return defaultUnixPathEnv
}

9
vendor/github.com/docker/docker/pkg/system/path_unix.go generated vendored Normal file
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@ -0,0 +1,9 @@
// +build !windows
package system
// CheckSystemDriveAndRemoveDriveLetter verifies that a path, if it includes a drive letter,
// is the system drive. This is a no-op on Linux.
func CheckSystemDriveAndRemoveDriveLetter(path string) (string, error) {
return path, nil
}

33
vendor/github.com/docker/docker/pkg/system/path_windows.go generated vendored Normal file
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@ -0,0 +1,33 @@
// +build windows
package system
import (
"fmt"
"path/filepath"
"strings"
)
// CheckSystemDriveAndRemoveDriveLetter verifies and manipulates a Windows path.
// This is used, for example, when validating a user provided path in docker cp.
// If a drive letter is supplied, it must be the system drive. The drive letter
// is always removed. Also, it translates it to OS semantics (IOW / to \). We
// need the path in this syntax so that it can ultimately be concatenated with
// a Windows long-path which doesn't support drive-letters. Examples:
// C: --> Fail
// C:\ --> \
// a --> a
// /a --> \a
// d:\ --> Fail
func CheckSystemDriveAndRemoveDriveLetter(path string) (string, error) {
if len(path) == 2 && string(path[1]) == ":" {
return "", fmt.Errorf("No relative path specified in %q", path)
}
if !filepath.IsAbs(path) || len(path) < 2 {
return filepath.FromSlash(path), nil
}
if string(path[1]) == ":" && !strings.EqualFold(string(path[0]), "c") {
return "", fmt.Errorf("The specified path is not on the system drive (C:)")
}
return filepath.FromSlash(path[2:]), nil
}

22
vendor/github.com/docker/docker/pkg/system/process_unix.go generated vendored Normal file
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@ -0,0 +1,22 @@
// +build linux freebsd solaris darwin
package system
import (
"syscall"
)
// IsProcessAlive returns true if process with a given pid is running.
func IsProcessAlive(pid int) bool {
err := syscall.Kill(pid, syscall.Signal(0))
if err == nil || err == syscall.EPERM {
return true
}
return false
}
// KillProcess force-stops a process.
func KillProcess(pid int) {
syscall.Kill(pid, syscall.SIGKILL)
}

80
vendor/github.com/docker/docker/pkg/system/rm.go generated vendored Normal file
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@ -0,0 +1,80 @@
package system
import (
"os"
"syscall"
"time"
"github.com/docker/docker/pkg/mount"
"github.com/pkg/errors"
)
// EnsureRemoveAll wraps `os.RemoveAll` to check for specific errors that can
// often be remedied.
// Only use `EnsureRemoveAll` if you really want to make every effort to remove
// a directory.
//
// Because of the way `os.Remove` (and by extension `os.RemoveAll`) works, there
// can be a race between reading directory entries and then actually attempting
// to remove everything in the directory.
// These types of errors do not need to be returned since it's ok for the dir to
// be gone we can just retry the remove operation.
//
// This should not return a `os.ErrNotExist` kind of error under any circumstances
func EnsureRemoveAll(dir string) error {
notExistErr := make(map[string]bool)
// track retries
exitOnErr := make(map[string]int)
maxRetry := 5
// Attempt to unmount anything beneath this dir first
mount.RecursiveUnmount(dir)
for {
err := os.RemoveAll(dir)
if err == nil {
return err
}
pe, ok := err.(*os.PathError)
if !ok {
return err
}
if os.IsNotExist(err) {
if notExistErr[pe.Path] {
return err
}
notExistErr[pe.Path] = true
// There is a race where some subdir can be removed but after the parent
// dir entries have been read.
// So the path could be from `os.Remove(subdir)`
// If the reported non-existent path is not the passed in `dir` we
// should just retry, but otherwise return with no error.
if pe.Path == dir {
return nil
}
continue
}
if pe.Err != syscall.EBUSY {
return err
}
if mounted, _ := mount.Mounted(pe.Path); mounted {
if e := mount.Unmount(pe.Path); e != nil {
if mounted, _ := mount.Mounted(pe.Path); mounted {
return errors.Wrapf(e, "error while removing %s", dir)
}
}
}
if exitOnErr[pe.Path] == maxRetry {
return err
}
exitOnErr[pe.Path]++
time.Sleep(100 * time.Millisecond)
}
}

13
vendor/github.com/docker/docker/pkg/system/stat_darwin.go generated vendored Normal file
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@ -0,0 +1,13 @@
package system
import "syscall"
// fromStatT converts a syscall.Stat_t type to a system.Stat_t type
func fromStatT(s *syscall.Stat_t) (*StatT, error) {
return &StatT{size: s.Size,
mode: uint32(s.Mode),
uid: s.Uid,
gid: s.Gid,
rdev: uint64(s.Rdev),
mtim: s.Mtimespec}, nil
}

13
vendor/github.com/docker/docker/pkg/system/stat_freebsd.go generated vendored Normal file
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@ -0,0 +1,13 @@
package system
import "syscall"
// fromStatT converts a syscall.Stat_t type to a system.Stat_t type
func fromStatT(s *syscall.Stat_t) (*StatT, error) {
return &StatT{size: s.Size,
mode: uint32(s.Mode),
uid: s.Uid,
gid: s.Gid,
rdev: uint64(s.Rdev),
mtim: s.Mtimespec}, nil
}

19
vendor/github.com/docker/docker/pkg/system/stat_linux.go generated vendored Normal file
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@ -0,0 +1,19 @@
package system
import "syscall"
// fromStatT converts a syscall.Stat_t type to a system.Stat_t type
func fromStatT(s *syscall.Stat_t) (*StatT, error) {
return &StatT{size: s.Size,
mode: uint32(s.Mode),
uid: s.Uid,
gid: s.Gid,
rdev: uint64(s.Rdev),
mtim: s.Mtim}, nil
}
// FromStatT converts a syscall.Stat_t type to a system.Stat_t type
// This is exposed on Linux as pkg/archive/changes uses it.
func FromStatT(s *syscall.Stat_t) (*StatT, error) {
return fromStatT(s)
}

13
vendor/github.com/docker/docker/pkg/system/stat_openbsd.go generated vendored Normal file
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@ -0,0 +1,13 @@
package system
import "syscall"
// fromStatT converts a syscall.Stat_t type to a system.Stat_t type
func fromStatT(s *syscall.Stat_t) (*StatT, error) {
return &StatT{size: s.Size,
mode: uint32(s.Mode),
uid: s.Uid,
gid: s.Gid,
rdev: uint64(s.Rdev),
mtim: s.Mtim}, nil
}

13
vendor/github.com/docker/docker/pkg/system/stat_solaris.go generated vendored Normal file
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@ -0,0 +1,13 @@
package system
import "syscall"
// fromStatT converts a syscall.Stat_t type to a system.Stat_t type
func fromStatT(s *syscall.Stat_t) (*StatT, error) {
return &StatT{size: s.Size,
mode: uint32(s.Mode),
uid: s.Uid,
gid: s.Gid,
rdev: uint64(s.Rdev),
mtim: s.Mtim}, nil
}

58
vendor/github.com/docker/docker/pkg/system/stat_unix.go generated vendored Normal file
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@ -0,0 +1,58 @@
// +build !windows
package system
import "syscall"
// StatT type contains status of a file. It contains metadata
// like permission, owner, group, size, etc about a file.
type StatT struct {
mode uint32
uid uint32
gid uint32
rdev uint64
size int64
mtim syscall.Timespec
}
// Mode returns file's permission mode.
func (s StatT) Mode() uint32 {
return s.mode
}
// UID returns file's user id of owner.
func (s StatT) UID() uint32 {
return s.uid
}
// GID returns file's group id of owner.
func (s StatT) GID() uint32 {
return s.gid
}
// Rdev returns file's device ID (if it's special file).
func (s StatT) Rdev() uint64 {
return s.rdev
}
// Size returns file's size.
func (s StatT) Size() int64 {
return s.size
}
// Mtim returns file's last modification time.
func (s StatT) Mtim() syscall.Timespec {
return s.mtim
}
// Stat takes a path to a file and returns
// a system.StatT type pertaining to that file.
//
// Throws an error if the file does not exist
func Stat(path string) (*StatT, error) {
s := &syscall.Stat_t{}
if err := syscall.Stat(path, s); err != nil {
return nil, err
}
return fromStatT(s)
}

49
vendor/github.com/docker/docker/pkg/system/stat_windows.go generated vendored Normal file
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@ -0,0 +1,49 @@
package system
import (
"os"
"time"
)
// StatT type contains status of a file. It contains metadata
// like permission, size, etc about a file.
type StatT struct {
mode os.FileMode
size int64
mtim time.Time
}
// Size returns file's size.
func (s StatT) Size() int64 {
return s.size
}
// Mode returns file's permission mode.
func (s StatT) Mode() os.FileMode {
return os.FileMode(s.mode)
}
// Mtim returns file's last modification time.
func (s StatT) Mtim() time.Time {
return time.Time(s.mtim)
}
// Stat takes a path to a file and returns
// a system.StatT type pertaining to that file.
//
// Throws an error if the file does not exist
func Stat(path string) (*StatT, error) {
fi, err := os.Stat(path)
if err != nil {
return nil, err
}
return fromStatT(&fi)
}
// fromStatT converts a os.FileInfo type to a system.StatT type
func fromStatT(fi *os.FileInfo) (*StatT, error) {
return &StatT{
size: (*fi).Size(),
mode: (*fi).Mode(),
mtim: (*fi).ModTime()}, nil
}

17
vendor/github.com/docker/docker/pkg/system/syscall_unix.go generated vendored Normal file
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@ -0,0 +1,17 @@
// +build linux freebsd
package system
import "syscall"
// Unmount is a platform-specific helper function to call
// the unmount syscall.
func Unmount(dest string) error {
return syscall.Unmount(dest, 0)
}
// CommandLineToArgv should not be used on Unix.
// It simply returns commandLine in the only element in the returned array.
func CommandLineToArgv(commandLine string) ([]string, error) {
return []string{commandLine}, nil
}

122
vendor/github.com/docker/docker/pkg/system/syscall_windows.go generated vendored Normal file
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@ -0,0 +1,122 @@
package system
import (
"syscall"
"unsafe"
"github.com/Sirupsen/logrus"
)
var (
ntuserApiset = syscall.NewLazyDLL("ext-ms-win-ntuser-window-l1-1-0")
procGetVersionExW = modkernel32.NewProc("GetVersionExW")
procGetProductInfo = modkernel32.NewProc("GetProductInfo")
)
// OSVersion is a wrapper for Windows version information
// https://msdn.microsoft.com/en-us/library/windows/desktop/ms724439(v=vs.85).aspx
type OSVersion struct {
Version uint32
MajorVersion uint8
MinorVersion uint8
Build uint16
}
// https://msdn.microsoft.com/en-us/library/windows/desktop/ms724833(v=vs.85).aspx
type osVersionInfoEx struct {
OSVersionInfoSize uint32
MajorVersion uint32
MinorVersion uint32
BuildNumber uint32
PlatformID uint32
CSDVersion [128]uint16
ServicePackMajor uint16
ServicePackMinor uint16
SuiteMask uint16
ProductType byte
Reserve byte
}
// GetOSVersion gets the operating system version on Windows. Note that
// docker.exe must be manifested to get the correct version information.
func GetOSVersion() OSVersion {
var err error
osv := OSVersion{}
osv.Version, err = syscall.GetVersion()
if err != nil {
// GetVersion never fails.
panic(err)
}
osv.MajorVersion = uint8(osv.Version & 0xFF)
osv.MinorVersion = uint8(osv.Version >> 8 & 0xFF)
osv.Build = uint16(osv.Version >> 16)
return osv
}
// IsWindowsClient returns true if the SKU is client
// @engine maintainers - this function should not be removed or modified as it
// is used to enforce licensing restrictions on Windows.
func IsWindowsClient() bool {
osviex := &osVersionInfoEx{OSVersionInfoSize: 284}
r1, _, err := procGetVersionExW.Call(uintptr(unsafe.Pointer(osviex)))
if r1 == 0 {
logrus.Warnf("GetVersionExW failed - assuming server SKU: %v", err)
return false
}
const verNTWorkstation = 0x00000001
return osviex.ProductType == verNTWorkstation
}
// IsIoTCore returns true if the currently running image is based off of
// Windows 10 IoT Core.
// @engine maintainers - this function should not be removed or modified as it
// is used to enforce licensing restrictions on Windows.
func IsIoTCore() bool {
var returnedProductType uint32
r1, _, err := procGetProductInfo.Call(6, 1, 0, 0, uintptr(unsafe.Pointer(&returnedProductType)))
if r1 == 0 {
logrus.Warnf("GetProductInfo failed - assuming this is not IoT: %v", err)
return false
}
const productIoTUAP = 0x0000007B
const productIoTUAPCommercial = 0x00000083
return returnedProductType == productIoTUAP || returnedProductType == productIoTUAPCommercial
}
// Unmount is a platform-specific helper function to call
// the unmount syscall. Not supported on Windows
func Unmount(dest string) error {
return nil
}
// CommandLineToArgv wraps the Windows syscall to turn a commandline into an argument array.
func CommandLineToArgv(commandLine string) ([]string, error) {
var argc int32
argsPtr, err := syscall.UTF16PtrFromString(commandLine)
if err != nil {
return nil, err
}
argv, err := syscall.CommandLineToArgv(argsPtr, &argc)
if err != nil {
return nil, err
}
defer syscall.LocalFree(syscall.Handle(uintptr(unsafe.Pointer(argv))))
newArgs := make([]string, argc)
for i, v := range (*argv)[:argc] {
newArgs[i] = string(syscall.UTF16ToString((*v)[:]))
}
return newArgs, nil
}
// HasWin32KSupport determines whether containers that depend on win32k can
// run on this machine. Win32k is the driver used to implement windowing.
func HasWin32KSupport() bool {
// For now, check for ntuser API support on the host. In the future, a host
// may support win32k in containers even if the host does not support ntuser
// APIs.
return ntuserApiset.Load() == nil
}

13
vendor/github.com/docker/docker/pkg/system/umask.go generated vendored Normal file
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@ -0,0 +1,13 @@
// +build !windows
package system
import (
"syscall"
)
// Umask sets current process's file mode creation mask to newmask
// and returns oldmask.
func Umask(newmask int) (oldmask int, err error) {
return syscall.Umask(newmask), nil
}

9
vendor/github.com/docker/docker/pkg/system/umask_windows.go generated vendored Normal file
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@ -0,0 +1,9 @@
// +build windows
package system
// Umask is not supported on the windows platform.
func Umask(newmask int) (oldmask int, err error) {
// should not be called on cli code path
return 0, ErrNotSupportedPlatform
}

22
vendor/github.com/docker/docker/pkg/system/utimes_freebsd.go generated vendored Normal file
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@ -0,0 +1,22 @@
package system
import (
"syscall"
"unsafe"
)
// LUtimesNano is used to change access and modification time of the specified path.
// It's used for symbol link file because syscall.UtimesNano doesn't support a NOFOLLOW flag atm.
func LUtimesNano(path string, ts []syscall.Timespec) error {
var _path *byte
_path, err := syscall.BytePtrFromString(path)
if err != nil {
return err
}
if _, _, err := syscall.Syscall(syscall.SYS_LUTIMES, uintptr(unsafe.Pointer(_path)), uintptr(unsafe.Pointer(&ts[0])), 0); err != 0 && err != syscall.ENOSYS {
return err
}
return nil
}

26
vendor/github.com/docker/docker/pkg/system/utimes_linux.go generated vendored Normal file
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@ -0,0 +1,26 @@
package system
import (
"syscall"
"unsafe"
)
// LUtimesNano is used to change access and modification time of the specified path.
// It's used for symbol link file because syscall.UtimesNano doesn't support a NOFOLLOW flag atm.
func LUtimesNano(path string, ts []syscall.Timespec) error {
// These are not currently available in syscall
atFdCwd := -100
atSymLinkNoFollow := 0x100
var _path *byte
_path, err := syscall.BytePtrFromString(path)
if err != nil {
return err
}
if _, _, err := syscall.Syscall6(syscall.SYS_UTIMENSAT, uintptr(atFdCwd), uintptr(unsafe.Pointer(_path)), uintptr(unsafe.Pointer(&ts[0])), uintptr(atSymLinkNoFollow), 0, 0); err != 0 && err != syscall.ENOSYS {
return err
}
return nil
}

10
vendor/github.com/docker/docker/pkg/system/utimes_unsupported.go generated vendored Normal file
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@ -0,0 +1,10 @@
// +build !linux,!freebsd
package system
import "syscall"
// LUtimesNano is only supported on linux and freebsd.
func LUtimesNano(path string, ts []syscall.Timespec) error {
return ErrNotSupportedPlatform
}

63
vendor/github.com/docker/docker/pkg/system/xattrs_linux.go generated vendored Normal file
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@ -0,0 +1,63 @@
package system
import (
"syscall"
"unsafe"
)
// Lgetxattr retrieves the value of the extended attribute identified by attr
// and associated with the given path in the file system.
// It will returns a nil slice and nil error if the xattr is not set.
func Lgetxattr(path string, attr string) ([]byte, error) {
pathBytes, err := syscall.BytePtrFromString(path)
if err != nil {
return nil, err
}
attrBytes, err := syscall.BytePtrFromString(attr)
if err != nil {
return nil, err
}
dest := make([]byte, 128)
destBytes := unsafe.Pointer(&dest[0])
sz, _, errno := syscall.Syscall6(syscall.SYS_LGETXATTR, uintptr(unsafe.Pointer(pathBytes)), uintptr(unsafe.Pointer(attrBytes)), uintptr(destBytes), uintptr(len(dest)), 0, 0)
if errno == syscall.ENODATA {
return nil, nil
}
if errno == syscall.ERANGE {
dest = make([]byte, sz)
destBytes := unsafe.Pointer(&dest[0])
sz, _, errno = syscall.Syscall6(syscall.SYS_LGETXATTR, uintptr(unsafe.Pointer(pathBytes)), uintptr(unsafe.Pointer(attrBytes)), uintptr(destBytes), uintptr(len(dest)), 0, 0)
}
if errno != 0 {
return nil, errno
}
return dest[:sz], nil
}
var _zero uintptr
// Lsetxattr sets the value of the extended attribute identified by attr
// and associated with the given path in the file system.
func Lsetxattr(path string, attr string, data []byte, flags int) error {
pathBytes, err := syscall.BytePtrFromString(path)
if err != nil {
return err
}
attrBytes, err := syscall.BytePtrFromString(attr)
if err != nil {
return err
}
var dataBytes unsafe.Pointer
if len(data) > 0 {
dataBytes = unsafe.Pointer(&data[0])
} else {
dataBytes = unsafe.Pointer(&_zero)
}
_, _, errno := syscall.Syscall6(syscall.SYS_LSETXATTR, uintptr(unsafe.Pointer(pathBytes)), uintptr(unsafe.Pointer(attrBytes)), uintptr(dataBytes), uintptr(len(data)), uintptr(flags), 0)
if errno != 0 {
return errno
}
return nil
}

13
vendor/github.com/docker/docker/pkg/system/xattrs_unsupported.go generated vendored Normal file
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@ -0,0 +1,13 @@
// +build !linux
package system
// Lgetxattr is not supported on platforms other than linux.
func Lgetxattr(path string, attr string) ([]byte, error) {
return nil, ErrNotSupportedPlatform
}
// Lsetxattr is not supported on platforms other than linux.
func Lsetxattr(path string, attr string, data []byte, flags int) error {
return ErrNotSupportedPlatform
}

44
vendor/github.com/docker/docker/pkg/urlutil/urlutil.go generated vendored Normal file
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@ -0,0 +1,44 @@
// Package urlutil provides helper function to check urls kind.
// It supports http urls, git urls and transport url (tcp://, …)
package urlutil
import (
"regexp"
"strings"
)
var (
validPrefixes = map[string][]string{
"url": {"http://", "https://"},
"git": {"git://", "github.com/", "git@"},
"transport": {"tcp://", "tcp+tls://", "udp://", "unix://", "unixgram://"},
}
urlPathWithFragmentSuffix = regexp.MustCompile(".git(?:#.+)?$")
)
// IsURL returns true if the provided str is an HTTP(S) URL.
func IsURL(str string) bool {
return checkURL(str, "url")
}
// IsGitURL returns true if the provided str is a git repository URL.
func IsGitURL(str string) bool {
if IsURL(str) && urlPathWithFragmentSuffix.MatchString(str) {
return true
}
return checkURL(str, "git")
}
// IsTransportURL returns true if the provided str is a transport (tcp, tcp+tls, udp, unix) URL.
func IsTransportURL(str string) bool {
return checkURL(str, "transport")
}
func checkURL(str, kind string) bool {
for _, prefix := range validPrefixes[kind] {
if strings.HasPrefix(str, prefix) {
return true
}
}
return false
}

137
vendor/github.com/docker/docker/vendor.conf generated vendored Normal file
View File

@ -0,0 +1,137 @@
# the following lines are in sorted order, FYI
github.com/Azure/go-ansiterm 388960b655244e76e24c75f48631564eaefade62
github.com/Microsoft/hcsshim v0.5.25
github.com/Microsoft/go-winio v0.4.2
github.com/Sirupsen/logrus v0.11.0
github.com/davecgh/go-spew 346938d642f2ec3594ed81d874461961cd0faa76
github.com/docker/libtrust 9cbd2a1374f46905c68a4eb3694a130610adc62a
github.com/go-check/check 4ed411733c5785b40214c70bce814c3a3a689609 https://github.com/cpuguy83/check.git
github.com/gorilla/context v1.1
github.com/gorilla/mux v1.1
github.com/jhowardmsft/opengcs v0.0.7
github.com/kr/pty 5cf931ef8f
github.com/mattn/go-shellwords v1.0.3
github.com/tchap/go-patricia v2.2.6
github.com/vdemeester/shakers 24d7f1d6a71aa5d9cbe7390e4afb66b7eef9e1b3
golang.org/x/net 7dcfb8076726a3fdd9353b6b8a1f1b6be6811bd6
golang.org/x/sys 8f0908ab3b2457e2e15403d3697c9ef5cb4b57a9
github.com/docker/go-units 9e638d38cf6977a37a8ea0078f3ee75a7cdb2dd1
github.com/docker/go-connections 3ede32e2033de7505e6500d6c868c2b9ed9f169d
golang.org/x/text f72d8390a633d5dfb0cc84043294db9f6c935756
github.com/stretchr/testify 4d4bfba8f1d1027c4fdbe371823030df51419987
github.com/pmezard/go-difflib v1.0.0
github.com/RackSec/srslog 456df3a81436d29ba874f3590eeeee25d666f8a5
github.com/imdario/mergo 0.2.1
golang.org/x/sync de49d9dcd27d4f764488181bea099dfe6179bcf0
#get libnetwork packages
github.com/docker/libnetwork 6426d1e66f33c0b0c8bb135b7ee547447f54d043
github.com/docker/go-events 18b43f1bc85d9cdd42c05a6cd2d444c7a200a894
github.com/armon/go-radix e39d623f12e8e41c7b5529e9a9dd67a1e2261f80
github.com/armon/go-metrics eb0af217e5e9747e41dd5303755356b62d28e3ec
github.com/hashicorp/go-msgpack 71c2886f5a673a35f909803f38ece5810165097b
github.com/hashicorp/memberlist v0.1.0
github.com/sean-/seed e2103e2c35297fb7e17febb81e49b312087a2372
github.com/hashicorp/go-sockaddr acd314c5781ea706c710d9ea70069fd2e110d61d
github.com/hashicorp/go-multierror fcdddc395df1ddf4247c69bd436e84cfa0733f7e
github.com/hashicorp/serf 598c54895cc5a7b1a24a398d635e8c0ea0959870
github.com/docker/libkv 1d8431073ae03cdaedb198a89722f3aab6d418ef
github.com/vishvananda/netns 604eaf189ee867d8c147fafc28def2394e878d25
github.com/vishvananda/netlink bd6d5de5ccef2d66b0a26177928d0d8895d7f969
github.com/BurntSushi/toml f706d00e3de6abe700c994cdd545a1a4915af060
github.com/samuel/go-zookeeper d0e0d8e11f318e000a8cc434616d69e329edc374
github.com/deckarep/golang-set ef32fa3046d9f249d399f98ebaf9be944430fd1d
github.com/coreos/etcd ea5389a79f40206170582c1ea076191b8622cb8e https://github.com/aaronlehmann/etcd # for https://github.com/coreos/etcd/pull/7830
github.com/ugorji/go f1f1a805ed361a0e078bb537e4ea78cd37dcf065
github.com/hashicorp/consul v0.5.2
github.com/boltdb/bolt fff57c100f4dea1905678da7e90d92429dff2904
github.com/miekg/dns 75e6e86cc601825c5dbcd4e0c209eab180997cd7
# get graph and distribution packages
github.com/docker/distribution b38e5838b7b2f2ad48e06ec4b500011976080621
github.com/vbatts/tar-split v0.10.1
github.com/opencontainers/go-digest a6d0ee40d4207ea02364bd3b9e8e77b9159ba1eb
# get go-zfs packages
github.com/mistifyio/go-zfs 22c9b32c84eb0d0c6f4043b6e90fc94073de92fa
github.com/pborman/uuid v1.0
google.golang.org/grpc v1.3.0
# When updating, also update RUNC_COMMIT in hack/dockerfile/binaries-commits accordingly
github.com/opencontainers/runc 2d41c047c83e09a6d61d464906feb2a2f3c52aa4 https://github.com/docker/runc
github.com/opencontainers/image-spec f03dbe35d449c54915d235f1a3cf8f585a24babe
github.com/opencontainers/runtime-spec d42f1eb741e6361e858d83fc75aa6893b66292c4 # specs
github.com/seccomp/libseccomp-golang 32f571b70023028bd57d9288c20efbcb237f3ce0
# libcontainer deps (see src/github.com/opencontainers/runc/Godeps/Godeps.json)
github.com/coreos/go-systemd v4
github.com/godbus/dbus v4.0.0
github.com/syndtr/gocapability 2c00daeb6c3b45114c80ac44119e7b8801fdd852
github.com/golang/protobuf 7a211bcf3bce0e3f1d74f9894916e6f116ae83b4
# gelf logging driver deps
github.com/Graylog2/go-gelf 7029da823dad4ef3a876df61065156acb703b2ea
github.com/fluent/fluent-logger-golang v1.2.1
# fluent-logger-golang deps
github.com/philhofer/fwd 98c11a7a6ec829d672b03833c3d69a7fae1ca972
github.com/tinylib/msgp 75ee40d2601edf122ef667e2a07d600d4c44490c
# fsnotify
github.com/fsnotify/fsnotify v1.2.11
# awslogs deps
github.com/aws/aws-sdk-go v1.4.22
github.com/go-ini/ini 060d7da055ba6ec5ea7a31f116332fe5efa04ce0
github.com/jmespath/go-jmespath 0b12d6b521d83fc7f755e7cfc1b1fbdd35a01a74
# logentries
github.com/bsphere/le_go 7a984a84b5492ae539b79b62fb4a10afc63c7bcf
# gcplogs deps
golang.org/x/oauth2 96382aa079b72d8c014eb0c50f6c223d1e6a2de0
google.golang.org/api 3cc2e591b550923a2c5f0ab5a803feda924d5823
cloud.google.com/go 9d965e63e8cceb1b5d7977a202f0fcb8866d6525
github.com/googleapis/gax-go da06d194a00e19ce00d9011a13931c3f6f6887c7
google.golang.org/genproto d80a6e20e776b0b17a324d0ba1ab50a39c8e8944
# containerd
github.com/containerd/containerd 3addd840653146c90a254301d6c3a663c7fd6429
github.com/tonistiigi/fifo 1405643975692217d6720f8b54aeee1bf2cd5cf4
github.com/stevvooe/continuity cd7a8e21e2b6f84799f5dd4b65faf49c8d3ee02d
github.com/tonistiigi/fsutil 0ac4c11b053b9c5c7c47558f81f96c7100ce50fb
# cluster
github.com/docker/swarmkit 79381d0840be27f8b3f5c667b348a4467d866eeb
github.com/gogo/protobuf v0.4
github.com/cloudflare/cfssl 7fb22c8cba7ecaf98e4082d22d65800cf45e042a
github.com/google/certificate-transparency d90e65c3a07988180c5b1ece71791c0b6506826e
golang.org/x/crypto 3fbbcd23f1cb824e69491a5930cfeff09b12f4d2
golang.org/x/time a4bde12657593d5e90d0533a3e4fd95e635124cb
github.com/hashicorp/go-memdb cb9a474f84cc5e41b273b20c6927680b2a8776ad
github.com/hashicorp/go-immutable-radix 8e8ed81f8f0bf1bdd829593fdd5c29922c1ea990
github.com/hashicorp/golang-lru a0d98a5f288019575c6d1f4bb1573fef2d1fcdc4
github.com/coreos/pkg fa29b1d70f0beaddd4c7021607cc3c3be8ce94b8
github.com/pivotal-golang/clock 3fd3c1944c59d9742e1cd333672181cd1a6f9fa0
github.com/prometheus/client_golang 52437c81da6b127a9925d17eb3a382a2e5fd395e
github.com/beorn7/perks 4c0e84591b9aa9e6dcfdf3e020114cd81f89d5f9
github.com/prometheus/client_model fa8ad6fec33561be4280a8f0514318c79d7f6cb6
github.com/prometheus/common ebdfc6da46522d58825777cf1f90490a5b1ef1d8
github.com/prometheus/procfs abf152e5f3e97f2fafac028d2cc06c1feb87ffa5
github.com/matttproud/golang_protobuf_extensions v1.0.0
github.com/pkg/errors 839d9e913e063e28dfd0e6c7b7512793e0a48be9
github.com/grpc-ecosystem/go-grpc-prometheus 6b7015e65d366bf3f19b2b2a000a831940f0f7e0
# cli
github.com/spf13/cobra v1.5.1 https://github.com/dnephin/cobra.git
github.com/spf13/pflag 9ff6c6923cfffbcd502984b8e0c80539a94968b7
github.com/inconshreveable/mousetrap 76626ae9c91c4f2a10f34cad8ce83ea42c93bb75
github.com/Nvveen/Gotty a8b993ba6abdb0e0c12b0125c603323a71c7790c https://github.com/ijc25/Gotty
# metrics
github.com/docker/go-metrics d466d4f6fd960e01820085bd7e1a24426ee7ef18
github.com/opencontainers/selinux v1.0.0-rc1

11
worker/runcworker/worker.go
View File

@ -13,6 +13,7 @@ import (
"github.com/Sirupsen/logrus"
"github.com/containerd/containerd/mount"
runc "github.com/containerd/go-runc"
"github.com/docker/docker/pkg/symlink"
"github.com/moby/buildkit/cache"
"github.com/moby/buildkit/worker"
"github.com/moby/buildkit/worker/oci"
@ -87,10 +88,18 @@ func (w *runcworker) Exec(ctx context.Context, meta worker.Meta, root cache.Moun
}
defer mount.Unmount(rootFSPath, 0)
spec.Root.Path = rootFSPath
if _, ok := root.(cache.ImmutableRef); ok {
if _, ok := root.(cache.ImmutableRef); ok { // TODO: pass in with mount, not ref type
spec.Root.Readonly = true
}
newp, err := symlink.FollowSymlinkInScope(filepath.Join(rootFSPath, meta.Cwd), rootFSPath)
if err != nil {
return errors.Wrapf(err, "working dir %s points to invalid target", newp)
}
if err := os.MkdirAll(newp, 0700); err != nil {
return errors.Wrapf(err, "failed to create working directory %s", newp)
}
if err := json.NewEncoder(f).Encode(spec); err != nil {
return err
}