docker
/
buildx
mirror of https://github.com/docker/buildx.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

Merge pull request #1477 from crazy-max/git-wsl 

build: lookup the right git binary on WSL
This commit is contained in:
Tõnis Tiigi 2022-12-15 18:00:52 -08:00 committed by GitHub
parent fbbe1c1b91 551b8f6785
commit 64e4c19971
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
23 changed files with 1058 additions and 111 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
build/build.go
View File

@ -594,10 +594,6 @@ func toSolveOpt(ctx context.Context, node builder.Node, multiDriver bool, opt Op
so.FrontendAttrs["attest:provenance"] = "mode=min,inline-only=true"
}
for k, v := range getGitAttributes(ctx, opt.Inputs.ContextPath, opt.Inputs.DockerfilePath) {
so.FrontendAttrs[k] = v
}
// set platforms
if len(opt.Platforms) != 0 {
pp := make([]string, len(opt.Platforms))
@ -852,6 +848,10 @@ func BuildWithResultHandler(ctx context.Context, nodes []builder.Node, opt map[s
for k, opt := range opt {
multiDriver := len(m[k]) > 1
hasMobyDriver := false
gitattrs, err := getGitAttributes(ctx, opt.Inputs.ContextPath, opt.Inputs.DockerfilePath)
if err != nil {
logrus.Warn(err)
}
for i, np := range m[k] {
node := nodes[np.driverIndex]
if node.Driver.IsMobyDriver() {
@ -861,6 +861,9 @@ func BuildWithResultHandler(ctx context.Context, nodes []builder.Node, opt map[s
so, release, err := toSolveOpt(ctx, node, multiDriver, opt, np.bopts, configDir, w, func(name string) (io.WriteCloser, func(), error) {
return docker.LoadImage(ctx, name, w)
})
for k, v := range gitattrs {
so.FrontendAttrs[k] = v
}
if err != nil {
return nil, err
}

72
build/git.go
View File

@ -3,18 +3,19 @@ package build
import (
"context"
"os"
"path"
"path/filepath"
"strconv"
"strings"
"github.com/docker/buildx/util/gitutil"
specs "github.com/opencontainers/image-spec/specs-go/v1"
"github.com/sirupsen/logrus"
"github.com/pkg/errors"
)
const DockerfileLabel = "com.docker.image.source.entrypoint"
func getGitAttributes(ctx context.Context, contextPath string, dockerfilePath string) (res map[string]string) {
func getGitAttributes(ctx context.Context, contextPath string, dockerfilePath string) (res map[string]string, _ error) {
res = make(map[string]string)
if contextPath == "" {
return
@ -48,27 +49,50 @@ func getGitAttributes(ctx context.Context, contextPath string, dockerfilePath st
wd, _ = filepath.Abs(filepath.Join(cwd, contextPath))
}
gitc := gitutil.New(gitutil.WithContext(ctx), gitutil.WithWorkingDir(wd))
if !gitc.IsInsideWorkTree() {
logrus.Warnf("Unable to determine Git information")
gitc, err := gitutil.New(gitutil.WithContext(ctx), gitutil.WithWorkingDir(wd))
if err != nil {
if st, err := os.Stat(path.Join(wd, ".git")); err == nil && st.IsDir() {
return res, errors.New("git was not found in the system. Current commit information was not captured by the build")
}
return
}
var resRevision, resSource, resDockerfilePath string
if !gitc.IsInsideWorkTree() {
if st, err := os.Stat(path.Join(wd, ".git")); err == nil && st.IsDir() {
return res, errors.New("failed to read current commit information with git rev-parse --is-inside-work-tree")
}
return res, nil
}
if sha, err := gitc.FullCommit(); err == nil && sha != "" {
resRevision = sha
if sha, err := gitc.FullCommit(); err != nil {
return res, errors.Wrapf(err, "failed to get git commit")
} else if sha != "" {
if gitc.IsDirty() {
resRevision += "-dirty"
sha += "-dirty"
}
if setGitLabels {
res["label:"+specs.AnnotationRevision] = sha
}
if setGitInfo {
res["vcs:revision"] = sha
}
}
if rurl, err := gitc.RemoteURL(); err == nil && rurl != "" {
resSource = rurl
if rurl, err := gitc.RemoteURL(); err != nil {
return res, errors.Wrapf(err, "failed to get git remote url")
} else if rurl != "" {
if setGitLabels {
res["label:"+specs.AnnotationSource] = rurl
}
if setGitInfo {
res["vcs:source"] = rurl
}
}
if setGitLabels {
if root, err := gitc.RootDir(); err == nil && root != "" {
if root, err := gitc.RootDir(); err != nil {
return res, errors.Wrapf(err, "failed to get git root dir")
} else if root != "" {
if dockerfilePath == "" {
dockerfilePath = filepath.Join(wd, "Dockerfile")
}
@ -78,32 +102,10 @@ func getGitAttributes(ctx context.Context, contextPath string, dockerfilePath st
}
dockerfilePath, _ = filepath.Rel(root, dockerfilePath)
if !strings.HasPrefix(dockerfilePath, "..") {
resDockerfilePath = dockerfilePath
res["label:"+DockerfileLabel] = dockerfilePath
}
}
}
if resSource != "" {
if setGitLabels {
res["label:"+specs.AnnotationSource] = resSource
}
if setGitInfo {
res["vcs:source"] = resSource
}
}
if resRevision != "" {
if setGitLabels {
res["label:"+specs.AnnotationRevision] = resRevision
}
if setGitInfo {
res["vcs:revision"] = resRevision
}
}
if resDockerfilePath != "" {
if setGitLabels {
res["label:"+DockerfileLabel] = resDockerfilePath
}
}
return
}

73
build/git_test.go
View File

@ -3,6 +3,7 @@ package build
import (
"context"
"os"
"path"
"path/filepath"
"strings"
"testing"
@ -10,21 +11,42 @@ import (
"github.com/docker/buildx/util/gitutil"
specs "github.com/opencontainers/image-spec/specs-go/v1"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
func setupTest(tb testing.TB) {
gitutil.Mktmp(tb)
gitutil.GitInit(tb)
c, err := gitutil.New()
require.NoError(tb, err)
gitutil.GitInit(c, tb)
df := []byte("FROM alpine:latest\n")
assert.NoError(tb, os.WriteFile("Dockerfile", df, 0644))
gitutil.GitAdd(tb, "Dockerfile")
gitutil.GitCommit(tb, "initial commit")
gitutil.GitAdd(c, tb, "Dockerfile")
gitutil.GitCommit(c, tb, "initial commit")
gitutil.GitSetRemote(c, tb, "git@github.com:docker/buildx.git")
}
func TestGetGitAttributesNotGitRepo(t *testing.T) {
_, err := getGitAttributes(context.Background(), t.TempDir(), "Dockerfile")
assert.NoError(t, err)
}
func TestGetGitAttributesBadGitRepo(t *testing.T) {
tmp := t.TempDir()
require.NoError(t, os.MkdirAll(path.Join(tmp, ".git"), 0755))
_, err := getGitAttributes(context.Background(), tmp, "Dockerfile")
assert.Error(t, err)
}
func TestGetGitAttributesNoContext(t *testing.T) {
setupTest(t)
gitattrs := getGitAttributes(context.Background(), "", "Dockerfile")
gitattrs, err := getGitAttributes(context.Background(), "", "Dockerfile")
assert.NoError(t, err)
assert.Empty(t, gitattrs)
}
@ -41,6 +63,7 @@ func TestGetGitAttributes(t *testing.T) {
envGitInfo: "",
expected: []string{
"vcs:revision",
"vcs:source",
},
},
{
@ -55,6 +78,7 @@ func TestGetGitAttributes(t *testing.T) {
envGitInfo: "true",
expected: []string{
"vcs:revision",
"vcs:source",
},
},
{
@ -64,6 +88,7 @@ func TestGetGitAttributes(t *testing.T) {
expected: []string{
"label:" + DockerfileLabel,
"label:" + specs.AnnotationRevision,
"label:" + specs.AnnotationSource,
},
},
{
@ -73,7 +98,9 @@ func TestGetGitAttributes(t *testing.T) {
expected: []string{
"label:" + DockerfileLabel,
"label:" + specs.AnnotationRevision,
"label:" + specs.AnnotationSource,
"vcs:revision",
"vcs:source",
},
},
}
@ -87,52 +114,42 @@ func TestGetGitAttributes(t *testing.T) {
if tt.envGitInfo != "" {
t.Setenv("BUILDX_GIT_INFO", tt.envGitInfo)
}
gitattrs := getGitAttributes(context.Background(), ".", "Dockerfile")
gitattrs, err := getGitAttributes(context.Background(), ".", "Dockerfile")
require.NoError(t, err)
for _, e := range tt.expected {
assert.Contains(t, gitattrs, e)
assert.NotEmpty(t, gitattrs[e])
if e == "label:"+DockerfileLabel {
assert.Equal(t, "Dockerfile", gitattrs[e])
} else if e == "label:"+specs.AnnotationSource || e == "vcs:source" {
assert.Equal(t, "git@github.com:docker/buildx.git", gitattrs[e])
}
}
})
}
}
func TestGetGitAttributesWithRemote(t *testing.T) {
setupTest(t)
gitutil.GitSetRemote(t, "git@github.com:docker/buildx.git")
t.Setenv("BUILDX_GIT_LABELS", "true")
gitattrs := getGitAttributes(context.Background(), ".", "Dockerfile")
assert.Equal(t, 5, len(gitattrs))
assert.Contains(t, gitattrs, "label:"+DockerfileLabel)
assert.Equal(t, "Dockerfile", gitattrs["label:"+DockerfileLabel])
assert.Contains(t, gitattrs, "label:"+specs.AnnotationRevision)
assert.NotEmpty(t, gitattrs["label:"+specs.AnnotationRevision])
assert.Contains(t, gitattrs, "label:"+specs.AnnotationSource)
assert.Equal(t, "git@github.com:docker/buildx.git", gitattrs["label:"+specs.AnnotationSource])
assert.Contains(t, gitattrs, "vcs:revision")
assert.NotEmpty(t, gitattrs["vcs:revision"])
assert.Contains(t, gitattrs, "vcs:source")
assert.Equal(t, "git@github.com:docker/buildx.git", gitattrs["vcs:source"])
}
func TestGetGitAttributesDirty(t *testing.T) {
setupTest(t)
// make a change to test dirty flag
df := []byte("FROM alpine:edge\n")
assert.NoError(t, os.Mkdir("dir", 0755))
assert.NoError(t, os.WriteFile(filepath.Join("dir", "Dockerfile"), df, 0644))
require.NoError(t, os.Mkdir("dir", 0755))
require.NoError(t, os.WriteFile(filepath.Join("dir", "Dockerfile"), df, 0644))
t.Setenv("BUILDX_GIT_LABELS", "true")
gitattrs := getGitAttributes(context.Background(), ".", "Dockerfile")
assert.Equal(t, 3, len(gitattrs))
gitattrs, _ := getGitAttributes(context.Background(), ".", "Dockerfile")
assert.Equal(t, 5, len(gitattrs))
assert.Contains(t, gitattrs, "label:"+DockerfileLabel)
assert.Equal(t, "Dockerfile", gitattrs["label:"+DockerfileLabel])
assert.Contains(t, gitattrs, "label:"+specs.AnnotationSource)
assert.Equal(t, "git@github.com:docker/buildx.git", gitattrs["label:"+specs.AnnotationSource])
assert.Contains(t, gitattrs, "label:"+specs.AnnotationRevision)
assert.True(t, strings.HasSuffix(gitattrs["label:"+specs.AnnotationRevision], "-dirty"))
assert.Contains(t, gitattrs, "vcs:source")
assert.Equal(t, "git@github.com:docker/buildx.git", gitattrs["vcs:source"])
assert.Contains(t, gitattrs, "vcs:revision")
assert.True(t, strings.HasSuffix(gitattrs["vcs:revision"], "-dirty"))
}

1
go.mod
View File

@ -17,6 +17,7 @@ require (
github.com/hashicorp/go-cty-funcs v0.0.0-20200930094925-2721b1e36840
github.com/hashicorp/hcl/v2 v2.8.2
github.com/moby/buildkit v0.11.0-rc1.0.20221213193744-862b22d7e7cf
github.com/moby/sys/mountinfo v0.6.2
github.com/morikuni/aec v1.0.0
github.com/opencontainers/go-digest v1.0.0
github.com/opencontainers/image-spec v1.0.3-0.20220303224323-02efb9a75ee1

2
go.sum
View File

@ -411,6 +411,7 @@ github.com/moby/spdystream v0.2.0 h1:cjW1zVyyoiM0T7b6UoySUFqzXMoqRckQtXwGPiBhOM8
github.com/moby/spdystream v0.2.0/go.mod h1:f7i0iNDQJ059oMTcWxx8MA/zKFIuD/lY+0GqbN2Wy8c=
github.com/moby/sys/mountinfo v0.5.0/go.mod h1:3bMD3Rg+zkqx8MRYPi7Pyb0Ie97QEBmdxbhnCLlSvSU=
github.com/moby/sys/mountinfo v0.6.2 h1:BzJjoreD5BMFNmD9Rus6gdd1pLuecOFPt8wC+Vygl78=
github.com/moby/sys/mountinfo v0.6.2/go.mod h1:IJb6JQeOklcdMU9F5xQ8ZALD+CUr5VlGpwtX+VE0rpI=
github.com/moby/sys/sequential v0.5.0 h1:OPvI35Lzn9K04PBbCLW0g4LcFAJgHsvXsRyewg5lXtc=
github.com/moby/sys/sequential v0.5.0/go.mod h1:tH2cOOs5V9MlPiXcQzRC+eEyab644PWKGRYaaV5ZZlo=
github.com/moby/sys/signal v0.7.0 h1:25RW3d5TnQEoKvRbEKUGay6DCQ46IxAVTT9CUMgmsSI=
@ -780,6 +781,7 @@ golang.org/x/sys v0.0.0-20211025201205-69cdffdb9359/go.mod h1:oPkhp1MJrh7nUepCBc
golang.org/x/sys v0.0.0-20211116061358-0a5406a5449c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20211216021012-1d35b9e2eb4e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220114195835-da31bd327af9/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.3.0 h1:w8ZOecv6NaNa/zC8944JTU3vz4u6Lagfk4RPQxv92NQ=
golang.org/x/sys v0.3.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=

42
util/gitutil/gitpath_unix.go Normal file
View File

@ -0,0 +1,42 @@
//go:build !windows
// +build !windows
package gitutil
import (
"os"
"os/exec"
"path/filepath"
"github.com/moby/sys/mountinfo"
)
func gitPath(wd string) (string, error) {
// On WSL2 we need to check if the current working directory is mounted on
// a Windows drive and if so, we need to use the Windows git executable.
if os.Getenv("WSL_DISTRO_NAME") != "" && wd != "" {
// ensure any symlinks are resolved
wdPath, err := filepath.EvalSymlinks(wd)
if err != nil {
return "", err
}
mi, err := mountinfo.GetMounts(mountinfo.ParentsFilter(wdPath))
if err != nil {
return "", err
}
// find the longest mount point
var idx, maxlen int
for i := range mi {
if len(mi[i].Mountpoint) > maxlen {
maxlen = len(mi[i].Mountpoint)
idx = i
}
}
if mi[idx].FSType == "9p" {
if p, err := exec.LookPath("git.exe"); err == nil {
return p, nil
}
}
}
return exec.LookPath("git")
}

9
util/gitutil/gitpath_windows.go Normal file
View File

@ -0,0 +1,9 @@
package gitutil
import (
"os/exec"
)
func gitPath(wd string) (string, error) {
return exec.LookPath("git.exe")
}

23
util/gitutil/gitutil.go
View File

@ -11,8 +11,9 @@ import (
// Git represents an active git object
type Git struct {
ctx context.Context
wd string
ctx context.Context
wd string
gitpath string
}
// Option provides a variadic option for configuring the git client.
@ -33,14 +34,22 @@ func WithWorkingDir(wd string) Option {
}
// New initializes a new git client
func New(opts ...Option) *Git {
func New(opts ...Option) (*Git, error) {
var err error
c := &Git{
ctx: context.Background(),
}
for _, opt := range opts {
opt(c)
}
return c
c.gitpath, err = gitPath(c.wd)
if err != nil {
return nil, errors.New("git not found in PATH")
}
return c, nil
}
func (c *Git) IsInsideWorkTree() bool {
@ -89,16 +98,12 @@ func (c *Git) Tag() (string, error) {
}
func (c *Git) run(args ...string) (string, error) {
if _, err := exec.LookPath("git"); err != nil {
return "", errors.New("git not present in PATH")
}
var extraArgs = []string{
"-c", "log.showSignature=false",
}
args = append(extraArgs, args...)
cmd := exec.Command("git", args...)
cmd := exec.CommandContext(c.ctx, c.gitpath, args...)
if c.wd != "" {
cmd.Dir = c.wd
}

48
util/gitutil/gitutil_test.go
View File

@ -7,7 +7,9 @@ import (
)
func TestGit(t *testing.T) {
c := New()
c, err := New()
require.NoError(t, err)
out, err := c.run("status")
require.NoError(t, err)
require.NotEmpty(t, out)
@ -20,10 +22,12 @@ func TestGit(t *testing.T) {
func TestGitFullCommit(t *testing.T) {
Mktmp(t)
GitInit(t)
GitCommit(t, "bar")
c, err := New()
require.NoError(t, err)
GitInit(c, t)
GitCommit(c, t, "bar")
c := New()
out, err := c.FullCommit()
require.NoError(t, err)
require.Equal(t, 40, len(out))
@ -31,10 +35,12 @@ func TestGitFullCommit(t *testing.T) {
func TestGitShortCommit(t *testing.T) {
Mktmp(t)
GitInit(t)
GitCommit(t, "bar")
c, err := New()
require.NoError(t, err)
GitInit(c, t)
GitCommit(c, t, "bar")
c := New()
out, err := c.ShortCommit()
require.NoError(t, err)
require.Equal(t, 7, len(out))
@ -42,13 +48,15 @@ func TestGitShortCommit(t *testing.T) {
func TestGitTagsPointsAt(t *testing.T) {
Mktmp(t)
GitInit(t)
GitCommit(t, "bar")
GitTag(t, "v0.8.0")
GitCommit(t, "foo")
GitTag(t, "v0.9.0")
c, err := New()
require.NoError(t, err)
GitInit(c, t)
GitCommit(c, t, "bar")
GitTag(c, t, "v0.8.0")
GitCommit(c, t, "foo")
GitTag(c, t, "v0.9.0")
c := New()
out, err := c.clean(c.run("tag", "--points-at", "HEAD", "--sort", "-version:creatordate"))
require.NoError(t, err)
require.Equal(t, "v0.9.0", out)
@ -56,13 +64,15 @@ func TestGitTagsPointsAt(t *testing.T) {
func TestGitDescribeTags(t *testing.T) {
Mktmp(t)
GitInit(t)
GitCommit(t, "bar")
GitTag(t, "v0.8.0")
GitCommit(t, "foo")
GitTag(t, "v0.9.0")
c, err := New()
require.NoError(t, err)
GitInit(c, t)
GitCommit(c, t, "bar")
GitTag(c, t, "v0.8.0")
GitCommit(c, t, "foo")
GitTag(c, t, "v0.9.0")
c := New()
out, err := c.clean(c.run("describe", "--tags", "--abbrev=0"))
require.NoError(t, err)
require.Equal(t, "v0.9.0", out)

31
util/gitutil/testutil.go
View File

@ -7,46 +7,46 @@ import (
"github.com/stretchr/testify/require"
)
func GitInit(tb testing.TB) {
func GitInit(c *Git, tb testing.TB) {
tb.Helper()
out, err := fakeGit("init")
out, err := fakeGit(c, "init")
require.NoError(tb, err)
require.Contains(tb, out, "Initialized empty Git repository")
require.NoError(tb, err)
GitCheckoutBranch(tb, "main")
_, _ = fakeGit("branch", "-D", "master")
GitCheckoutBranch(c, tb, "main")
_, _ = fakeGit(c, "branch", "-D", "master")
}
func GitCommit(tb testing.TB, msg string) {
func GitCommit(c *Git, tb testing.TB, msg string) {
tb.Helper()
out, err := fakeGit("commit", "--allow-empty", "-m", msg)
out, err := fakeGit(c, "commit", "--allow-empty", "-m", msg)
require.NoError(tb, err)
require.Contains(tb, out, "main", msg)
}
func GitTag(tb testing.TB, tag string) {
func GitTag(c *Git, tb testing.TB, tag string) {
tb.Helper()
out, err := fakeGit("tag", tag)
out, err := fakeGit(c, "tag", tag)
require.NoError(tb, err)
require.Empty(tb, out)
}
func GitCheckoutBranch(tb testing.TB, name string) {
func GitCheckoutBranch(c *Git, tb testing.TB, name string) {
tb.Helper()
out, err := fakeGit("checkout", "-b", name)
out, err := fakeGit(c, "checkout", "-b", name)
require.NoError(tb, err)
require.Empty(tb, out)
}
func GitAdd(tb testing.TB, file string) {
func GitAdd(c *Git, tb testing.TB, file string) {
tb.Helper()
_, err := fakeGit("add", file)
_, err := fakeGit(c, "add", file)
require.NoError(tb, err)
}
func GitSetRemote(tb testing.TB, url string) {
func GitSetRemote(c *Git, tb testing.TB, url string) {
tb.Helper()
_, err := fakeGit("remote", "add", "origin", url)
_, err := fakeGit(c, "remote", "add", "origin", url)
require.NoError(tb, err)
}
@ -62,7 +62,7 @@ func Mktmp(tb testing.TB) string {
return folder
}
func fakeGit(args ...string) (string, error) {
func fakeGit(c *Git, args ...string) (string, error) {
allArgs := []string{
"-c", "user.name=buildx",
"-c", "user.email=buildx@docker.com",
@ -71,6 +71,5 @@ func fakeGit(args ...string) (string, error) {
"-c", "log.showSignature=false",
}
allArgs = append(allArgs, args...)
c := New()
return c.clean(c.run(allArgs...))
}

202
vendor/github.com/moby/sys/mountinfo/LICENSE generated vendored Normal file
View File

@ -0,0 +1,202 @@
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
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
APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "[]"
replaced with your own identifying information. (Don't include
the brackets!) The text should be enclosed in the appropriate
comment syntax for the file format. We also recommend that a
file or class name and description of purpose be included on the
same "printed page" as the copyright notice for easier
identification within third-party archives.
Copyright [yyyy] [name of copyright owner]
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.

44
vendor/github.com/moby/sys/mountinfo/doc.go generated vendored Normal file
View File

@ -0,0 +1,44 @@
// Package mountinfo provides a set of functions to retrieve information about OS mounts.
//
// Currently it supports Linux. For historical reasons, there is also some support for FreeBSD and OpenBSD,
// and a shallow implementation for Windows, but in general this is Linux-only package, so
// the rest of the document only applies to Linux, unless explicitly specified otherwise.
//
// In Linux, information about mounts seen by the current process is available from
// /proc/self/mountinfo. Note that due to mount namespaces, different processes can
// see different mounts. A per-process mountinfo table is available from /proc/<PID>/mountinfo,
// where <PID> is a numerical process identifier.
//
// In general, /proc is not a very efficient interface, and mountinfo is not an exception.
// For example, there is no way to get information about a specific mount point (i.e. it
// is all-or-nothing). This package tries to hide the /proc ineffectiveness by using
// parse filters while reading mountinfo. A filter can skip some entries, or stop
// processing the rest of the file once the needed information is found.
//
// For mountinfo filters that accept path as an argument, the path must be absolute,
// having all symlinks resolved, and being cleaned (i.e. no extra slashes or dots).
// One way to achieve all of the above is to employ filepath.Abs followed by
// filepath.EvalSymlinks (the latter calls filepath.Clean on the result so
// there is no need to explicitly call filepath.Clean).
//
// NOTE that in many cases there is no need to consult mountinfo at all. Here are some
// of the cases where mountinfo should not be parsed:
//
// 1. Before performing a mount. Usually, this is not needed, but if required (say to
// prevent over-mounts), to check whether a directory is mounted, call os.Lstat
// on it and its parent directory, and compare their st.Sys().(*syscall.Stat_t).Dev
// fields -- if they differ, then the directory is the mount point. NOTE this does
// not work for bind mounts. Optionally, the filesystem type can also be checked
// by calling unix.Statfs and checking the Type field (i.e. filesystem type).
//
// 2. After performing a mount. If there is no error returned, the mount succeeded;
// checking the mount table for a new mount is redundant and expensive.
//
// 3. Before performing an unmount. It is more efficient to do an unmount and ignore
// a specific error (EINVAL) which tells the directory is not mounted.
//
// 4. After performing an unmount. If there is no error returned, the unmount succeeded.
//
// 5. To find the mount point root of a specific directory. You can perform os.Stat()
// on the directory and traverse up until the Dev field of a parent directory differs.
package mountinfo

101
vendor/github.com/moby/sys/mountinfo/mounted_linux.go generated vendored Normal file
View File

@ -0,0 +1,101 @@
package mountinfo
import (
"os"
"path/filepath"
"golang.org/x/sys/unix"
)
// MountedFast is a method of detecting a mount point without reading
// mountinfo from procfs. A caller can only trust the result if no error
// and sure == true are returned. Otherwise, other methods (e.g. parsing
// /proc/mounts) have to be used. If unsure, use Mounted instead (which
// uses MountedFast, but falls back to parsing mountinfo if needed).
//
// If a non-existent path is specified, an appropriate error is returned.
// In case the caller is not interested in this particular error, it should
// be handled separately using e.g. errors.Is(err, fs.ErrNotExist).
//
// This function is only available on Linux. When available (since kernel
// v5.6), openat2(2) syscall is used to reliably detect all mounts. Otherwise,
// the implementation falls back to using stat(2), which can reliably detect
// normal (but not bind) mounts.
func MountedFast(path string) (mounted, sure bool, err error) {
// Root is always mounted.
if path == string(os.PathSeparator) {
return true, true, nil
}
path, err = normalizePath(path)
if err != nil {
return false, false, err
}
mounted, sure, err = mountedFast(path)
return
}
// mountedByOpenat2 is a method of detecting a mount that works for all kinds
// of mounts (incl. bind mounts), but requires a recent (v5.6+) linux kernel.
func mountedByOpenat2(path string) (bool, error) {
dir, last := filepath.Split(path)
dirfd, err := unix.Openat2(unix.AT_FDCWD, dir, &unix.OpenHow{
Flags: unix.O_PATH | unix.O_CLOEXEC,
})
if err != nil {
return false, &os.PathError{Op: "openat2", Path: dir, Err: err}
}
fd, err := unix.Openat2(dirfd, last, &unix.OpenHow{
Flags: unix.O_PATH | unix.O_CLOEXEC | unix.O_NOFOLLOW,
Resolve: unix.RESOLVE_NO_XDEV,
})
_ = unix.Close(dirfd)
switch err { //nolint:errorlint // unix errors are bare
case nil: // definitely not a mount
_ = unix.Close(fd)
return false, nil
case unix.EXDEV: // definitely a mount
return true, nil
}
// not sure
return false, &os.PathError{Op: "openat2", Path: path, Err: err}
}
// mountedFast is similar to MountedFast, except it expects a normalized path.
func mountedFast(path string) (mounted, sure bool, err error) {
// Root is always mounted.
if path == string(os.PathSeparator) {
return true, true, nil
}
// Try a fast path, using openat2() with RESOLVE_NO_XDEV.
mounted, err = mountedByOpenat2(path)
if err == nil {
return mounted, true, nil
}
// Another fast path: compare st.st_dev fields.
mounted, err = mountedByStat(path)
// This does not work for bind mounts, so false negative
// is possible, therefore only trust if return is true.
if mounted && err == nil {
return true, true, nil
}
return
}
func mounted(path string) (bool, error) {
path, err := normalizePath(path)
if err != nil {
return false, err
}
mounted, sure, err := mountedFast(path)
if sure && err == nil {
return mounted, nil
}
// Fallback to parsing mountinfo.
return mountedByMountinfo(path)
}

53
vendor/github.com/moby/sys/mountinfo/mounted_unix.go generated vendored Normal file
View File

@ -0,0 +1,53 @@
//go:build linux || freebsd || openbsd || darwin
// +build linux freebsd openbsd darwin
package mountinfo
import (
"os"
"path/filepath"
"golang.org/x/sys/unix"
)
func mountedByStat(path string) (bool, error) {
var st unix.Stat_t
if err := unix.Lstat(path, &st); err != nil {
return false, &os.PathError{Op: "stat", Path: path, Err: err}
}
dev := st.Dev
parent := filepath.Dir(path)
if err := unix.Lstat(parent, &st); err != nil {
return false, &os.PathError{Op: "stat", Path: parent, Err: err}
}
if dev != st.Dev {
// Device differs from that of parent,
// so definitely a mount point.
return true, nil
}
// NB: this does not detect bind mounts on Linux.
return false, nil
}
func normalizePath(path string) (realPath string, err error) {
if realPath, err = filepath.Abs(path); err != nil {
return "", err
}
if realPath, err = filepath.EvalSymlinks(realPath); err != nil {
return "", err
}
if _, err := os.Stat(realPath); err != nil {
return "", err
}
return realPath, nil
}
func mountedByMountinfo(path string) (bool, error) {
entries, err := GetMounts(SingleEntryFilter(path))
if err != nil {
return false, err
}
return len(entries) > 0, nil
}

67
vendor/github.com/moby/sys/mountinfo/mountinfo.go generated vendored Normal file
View File

@ -0,0 +1,67 @@
package mountinfo
import (
"os"
)
// GetMounts retrieves a list of mounts for the current running process,
// with an optional filter applied (use nil for no filter).
func GetMounts(f FilterFunc) ([]*Info, error) {
return parseMountTable(f)
}
// Mounted determines if a specified path is a mount point. In case of any
// error, false (and an error) is returned.
//
// If a non-existent path is specified, an appropriate error is returned.
// In case the caller is not interested in this particular error, it should
// be handled separately using e.g. errors.Is(err, fs.ErrNotExist).
func Mounted(path string) (bool, error) {
// root is always mounted
if path == string(os.PathSeparator) {
return true, nil
}
return mounted(path)
}
// 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 is the ID of the parent mount (or of self for the root
// of this mount namespace's mount tree).
Parent int
// Major and Minor are the major and the minor components of the Dev
// field of unix.Stat_t structure returned by unix.*Stat calls for
// files on this filesystem.
Major, Minor int
// Root is the pathname of the directory in the filesystem which forms
// the root of this mount.
Root string
// Mountpoint is the pathname of the mount point relative to the
// process's root directory.
Mountpoint string
// Options is a comma-separated list of mount options.
Options string
// Optional are zero or more fields of the form "tag[:value]",
// separated by a space. Currently, the possible optional fields are
// "shared", "master", "propagate_from", and "unbindable". For more
// information, see mount_namespaces(7) Linux man page.
Optional string
// FSType is the filesystem type in the form "type[.subtype]".
FSType string
// Source is filesystem-specific information, or "none".
Source string
// VFSOptions is a comma-separated list of superblock options.
VFSOptions string
}

56
vendor/github.com/moby/sys/mountinfo/mountinfo_bsd.go generated vendored Normal file
View File

@ -0,0 +1,56 @@
//go:build freebsd || openbsd || darwin
// +build freebsd openbsd darwin
package mountinfo
import "golang.org/x/sys/unix"
// parseMountTable returns information about mounted filesystems
func parseMountTable(filter FilterFunc) ([]*Info, error) {
count, err := unix.Getfsstat(nil, unix.MNT_WAIT)
if err != nil {
return nil, err
}
entries := make([]unix.Statfs_t, count)
_, err = unix.Getfsstat(entries, unix.MNT_WAIT)
if err != nil {
return nil, err
}
var out []*Info
for _, entry := range entries {
var skip, stop bool
mountinfo := getMountinfo(&entry)
if filter != nil {
// filter out entries we're not interested in
skip, stop = filter(mountinfo)
if skip {
continue
}
}
out = append(out, mountinfo)
if stop {
break
}
}
return out, nil
}
func mounted(path string) (bool, error) {
path, err := normalizePath(path)
if err != nil {
return false, err
}
// Fast path: compare st.st_dev fields.
// This should always work for FreeBSD and OpenBSD.
mounted, err := mountedByStat(path)
if err == nil {
return mounted, nil
}
// Fallback to parsing mountinfo
return mountedByMountinfo(path)
}

63
vendor/github.com/moby/sys/mountinfo/mountinfo_filters.go generated vendored Normal file
View File

@ -0,0 +1,63 @@
package mountinfo
import "strings"
// FilterFunc is a type defining a callback function for GetMount(),
// used to filter out mountinfo entries we're not interested in,
// and/or stop further processing if we found what we wanted.
//
// It takes a pointer to the Info struct (fully populated with all available
// fields on the GOOS platform), and returns two booleans:
//
// skip: true if the entry should be skipped;
//
// stop: true if parsing should be stopped after the entry.
type FilterFunc func(*Info) (skip, stop bool)
// PrefixFilter discards all entries whose mount points do not start with, or
// are equal to the path specified in prefix. The prefix path must be absolute,
// have all symlinks resolved, and cleaned (i.e. no extra slashes or dots).
//
// PrefixFilter treats prefix as a path, not a partial prefix, which means that
// given "/foo", "/foo/bar" and "/foobar" entries, PrefixFilter("/foo") returns
// "/foo" and "/foo/bar", and discards "/foobar".
func PrefixFilter(prefix string) FilterFunc {
return func(m *Info) (bool, bool) {
skip := !strings.HasPrefix(m.Mountpoint+"/", prefix+"/")
return skip, false
}
}
// SingleEntryFilter looks for a specific entry.
func SingleEntryFilter(mp string) FilterFunc {
return func(m *Info) (bool, bool) {
if m.Mountpoint == mp {
return false, true // don't skip, stop now
}
return true, false // skip, keep going
}
}
// ParentsFilter returns all entries whose mount points
// can be parents of a path specified, discarding others.
//
// For example, given /var/lib/docker/something, entries
// like /var/lib/docker, /var and / are returned.
func ParentsFilter(path string) FilterFunc {
return func(m *Info) (bool, bool) {
skip := !strings.HasPrefix(path, m.Mountpoint)
return skip, false
}
}
// FSTypeFilter returns all entries that match provided fstype(s).
func FSTypeFilter(fstype ...string) FilterFunc {
return func(m *Info) (bool, bool) {
for _, t := range fstype {
if m.FSType == t {
return false, false // don't skip, keep going
}
}
return true, false // skip, keep going
}
}

14
vendor/github.com/moby/sys/mountinfo/mountinfo_freebsdlike.go generated vendored Normal file
View File

@ -0,0 +1,14 @@
//go:build freebsd || darwin
// +build freebsd darwin
package mountinfo
import "golang.org/x/sys/unix"
func getMountinfo(entry *unix.Statfs_t) *Info {
return &Info{
Mountpoint: unix.ByteSliceToString(entry.Mntonname[:]),
FSType: unix.ByteSliceToString(entry.Fstypename[:]),
Source: unix.ByteSliceToString(entry.Mntfromname[:]),
}
}

214
vendor/github.com/moby/sys/mountinfo/mountinfo_linux.go generated vendored Normal file
View File

@ -0,0 +1,214 @@
package mountinfo
import (
"bufio"
"fmt"
"io"
"os"
"strconv"
"strings"
)
// GetMountsFromReader retrieves a list of mounts from the
// reader provided, with an optional filter applied (use nil
// for no filter). This can be useful in tests or benchmarks
// that provide fake mountinfo data, or when a source other
// than /proc/self/mountinfo needs to be read from.
//
// This function is Linux-specific.
func GetMountsFromReader(r io.Reader, filter FilterFunc) ([]*Info, error) {
s := bufio.NewScanner(r)
out := []*Info{}
for s.Scan() {
var err error
/*
See http://man7.org/linux/man-pages/man5/proc.5.html
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
In other words, we have:
* 6 mandatory fields (1)..(6)
* 0 or more optional fields (7)
* a separator field (8)
* 3 mandatory fields (9)..(11)
*/
text := s.Text()
fields := strings.Split(text, " ")
numFields := len(fields)
if numFields < 10 {
// should be at least 10 fields
return nil, fmt.Errorf("parsing '%s' failed: not enough fields (%d)", text, numFields)
}
// separator field
sepIdx := numFields - 4
// In Linux <= 3.9 mounting a cifs with spaces in a share
// name (like "//srv/My Docs") _may_ end up having a space
// in the last field of mountinfo (like "unc=//serv/My Docs").
// Since kernel 3.10-rc1, cifs option "unc=" is ignored,
// so spaces should not appear.
//
// Check for a separator, and work around the spaces bug
for fields[sepIdx] != "-" {
sepIdx--
if sepIdx == 5 {
return nil, fmt.Errorf("parsing '%s' failed: missing - separator", text)
}
}
p := &Info{}
p.Mountpoint, err = unescape(fields[4])
if err != nil {
return nil, fmt.Errorf("parsing '%s' failed: mount point: %w", fields[4], err)
}
p.FSType, err = unescape(fields[sepIdx+1])
if err != nil {
return nil, fmt.Errorf("parsing '%s' failed: fstype: %w", fields[sepIdx+1], err)
}
p.Source, err = unescape(fields[sepIdx+2])
if err != nil {
return nil, fmt.Errorf("parsing '%s' failed: source: %w", fields[sepIdx+2], err)
}
p.VFSOptions = fields[sepIdx+3]
// ignore any numbers parsing errors, as there should not be any
p.ID, _ = strconv.Atoi(fields[0])
p.Parent, _ = strconv.Atoi(fields[1])
mm := strings.SplitN(fields[2], ":", 3)
if len(mm) != 2 {
return nil, fmt.Errorf("parsing '%s' failed: unexpected major:minor pair %s", text, mm)
}
p.Major, _ = strconv.Atoi(mm[0])
p.Minor, _ = strconv.Atoi(mm[1])
p.Root, err = unescape(fields[3])
if err != nil {
return nil, fmt.Errorf("parsing '%s' failed: root: %w", fields[3], err)
}
p.Options = fields[5]
// zero or more optional fields
p.Optional = strings.Join(fields[6:sepIdx], " ")
// Run the filter after parsing all fields.
var skip, stop bool
if filter != nil {
skip, stop = filter(p)
if skip {
continue
}
}
out = append(out, p)
if stop {
break
}
}
if err := s.Err(); err != nil {
return nil, err
}
return out, nil
}
func parseMountTable(filter FilterFunc) ([]*Info, error) {
f, err := os.Open("/proc/self/mountinfo")
if err != nil {
return nil, err
}
defer f.Close()
return GetMountsFromReader(f, filter)
}
// PidMountInfo retrieves the list of mounts from a given process' mount
// namespace. Unless there is a need to get mounts from a mount namespace
// different from that of a calling process, use GetMounts.
//
// This function is Linux-specific.
//
// Deprecated: this will be removed before v1; use GetMountsFromReader with
// opened /proc/<pid>/mountinfo as an argument 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 GetMountsFromReader(f, nil)
}
// A few specific characters in mountinfo path entries (root and mountpoint)
// are escaped using a backslash followed by a character's ascii code in octal.
//
// space -- as \040
// tab (aka \t) -- as \011
// newline (aka \n) -- as \012
// backslash (aka \\) -- as \134
//
// This function converts path from mountinfo back, i.e. it unescapes the above sequences.
func unescape(path string) (string, error) {
// try to avoid copying
if strings.IndexByte(path, '\\') == -1 {
return path, nil
}
// The following code is UTF-8 transparent as it only looks for some
// specific characters (backslash and 0..7) with values < utf8.RuneSelf,
// and everything else is passed through as is.
buf := make([]byte, len(path))
bufLen := 0
for i := 0; i < len(path); i++ {
if path[i] != '\\' {
buf[bufLen] = path[i]
bufLen++
continue
}
s := path[i:]
if len(s) < 4 {
// too short
return "", fmt.Errorf("bad escape sequence %q: too short", s)
}
c := s[1]
switch c {
case '0', '1', '2', '3', '4', '5', '6', '7':
v := c - '0'
for j := 2; j < 4; j++ { // one digit already; two more
if s[j] < '0' || s[j] > '7' {
return "", fmt.Errorf("bad escape sequence %q: not a digit", s[:3])
}
x := s[j] - '0'
v = (v << 3) | x
}
if v > 255 {
return "", fmt.Errorf("bad escape sequence %q: out of range" + s[:3])
}
buf[bufLen] = v
bufLen++
i += 3
continue
default:
return "", fmt.Errorf("bad escape sequence %q: not a digit" + s[:3])
}
}
return string(buf[:bufLen]), nil
}

11
vendor/github.com/moby/sys/mountinfo/mountinfo_openbsd.go generated vendored Normal file
View File

@ -0,0 +1,11 @@
package mountinfo
import "golang.org/x/sys/unix"
func getMountinfo(entry *unix.Statfs_t) *Info {
return &Info{
Mountpoint: unix.ByteSliceToString(entry.F_mntonname[:]),
FSType: unix.ByteSliceToString(entry.F_fstypename[:]),
Source: unix.ByteSliceToString(entry.F_mntfromname[:]),
}
}

19
vendor/github.com/moby/sys/mountinfo/mountinfo_unsupported.go generated vendored Normal file
View File

@ -0,0 +1,19 @@
//go:build !windows && !linux && !freebsd && !openbsd && !darwin
// +build !windows,!linux,!freebsd,!openbsd,!darwin
package mountinfo
import (
"fmt"
"runtime"
)
var errNotImplemented = fmt.Errorf("not implemented on %s/%s", runtime.GOOS, runtime.GOARCH)
func parseMountTable(_ FilterFunc) ([]*Info, error) {
return nil, errNotImplemented
}
func mounted(path string) (bool, error) {
return false, errNotImplemented
}

10
vendor/github.com/moby/sys/mountinfo/mountinfo_windows.go generated vendored Normal file
View File

@ -0,0 +1,10 @@
package mountinfo
func parseMountTable(_ FilterFunc) ([]*Info, error) {
// Do NOT return an error!
return nil, nil
}
func mounted(_ string) (bool, error) {
return false, nil
}

3
vendor/modules.txt vendored
View File

@ -510,6 +510,9 @@ github.com/moby/patternmatcher
## explicit; go 1.13
github.com/moby/spdystream
github.com/moby/spdystream/spdy
# github.com/moby/sys/mountinfo v0.6.2
## explicit; go 1.16
github.com/moby/sys/mountinfo
# github.com/moby/sys/sequential v0.5.0
## explicit; go 1.17
github.com/moby/sys/sequential