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vendor: github.com/moby/go-archive v0.1.0

Browse Source 
full diff: https://github.com/moby/go-archive/compare/21f3f3385ab7...v0.1.0

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
This commit is contained in:
Sebastiaan van Stijn 2025-04-16 14:00:21 +02:00
parent 7fbda524e5
commit 3f0a42ece3
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GPG Key ID: 76698F39D527CE8C
24 changed files with 579 additions and 474 deletions
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2
go.mod
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@ -48,7 +48,7 @@ require (
github.com/klauspost/compress v1.18.0
github.com/mitchellh/hashstructure/v2 v2.0.2
github.com/moby/docker-image-spec v1.3.1
github.com/moby/go-archive v0.0.0-20250404171912-21f3f3385ab7
github.com/moby/go-archive v0.1.0
github.com/moby/locker v1.0.1
github.com/moby/patternmatcher v0.6.0
github.com/moby/sys/mountinfo v0.7.2

4
go.sum
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@ -274,8 +274,8 @@ github.com/mitchellh/hashstructure/v2 v2.0.2/go.mod h1:MG3aRVU/N29oo/V/IhBX8GR/z
github.com/mndrix/tap-go v0.0.0-20171203230836-629fa407e90b/go.mod h1:pzzDgJWZ34fGzaAZGFW22KVZDfyrYW+QABMrWnJBnSs=
github.com/moby/docker-image-spec v1.3.1 h1:jMKff3w6PgbfSa69GfNg+zN/XLhfXJGnEx3Nl2EsFP0=
github.com/moby/docker-image-spec v1.3.1/go.mod h1:eKmb5VW8vQEh/BAr2yvVNvuiJuY6UIocYsFu/DxxRpo=
github.com/moby/go-archive v0.0.0-20250404171912-21f3f3385ab7 h1:CWAY9uG9JhmLmnM7T64+bV0C9IraDrvxEwXq1HJ7hhk=
github.com/moby/go-archive v0.0.0-20250404171912-21f3f3385ab7/go.mod h1:G9B+YoujNohJmrIYFBpSd54GTUB4lt9S+xVQvsJyFuo=
github.com/moby/go-archive v0.1.0 h1:Kk/5rdW/g+H8NHdJW2gsXyZ7UnzvJNOy6VKJqueWdcQ=
github.com/moby/go-archive v0.1.0/go.mod h1:G9B+YoujNohJmrIYFBpSd54GTUB4lt9S+xVQvsJyFuo=
github.com/moby/locker v1.0.1 h1:fOXqR41zeveg4fFODix+1Ch4mj/gT0NE1XJbp/epuBg=
github.com/moby/locker v1.0.1/go.mod h1:S7SDdo5zpBK84bzzVlKr2V0hz+7x9hWbYC/kq7oQppc=
github.com/moby/patternmatcher v0.6.0 h1:GmP9lR19aU5GqSSFko+5pRqHi+Ohk1O69aFiKkVGiPk=

5
solver/llbsolver/file/unpack.go
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@ -6,8 +6,9 @@ import (
"time"
"github.com/containerd/continuity/fs"
archive "github.com/moby/go-archive"
"github.com/moby/go-archive"
"github.com/moby/go-archive/chrootarchive"
"github.com/moby/go-archive/compression"
"github.com/moby/sys/user"
copy "github.com/tonistiigi/fsutil/copy"
)
@ -57,7 +58,7 @@ func isArchivePath(path string) bool {
return false
}
defer file.Close()
rdr, err := archive.DecompressStream(file)
rdr, err := compression.DecompressStream(file)
if err != nil {
return false
}

2
vendor/github.com/moby/go-archive/.gitattributes generated vendored Normal file
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@ -0,0 +1,2 @@
*.go -text diff=golang
*.go text eol=lf

1
vendor/github.com/moby/go-archive/.gitignore generated vendored Normal file
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@ -0,0 +1 @@
/coverage.txt

33
vendor/github.com/moby/go-archive/.golangci.yml generated vendored Normal file
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@ -0,0 +1,33 @@
version: "2"
issues:
# Disable maximum issues count per one linter.
max-issues-per-linter: 0
# Disable maximum count of issues with the same text.
max-same-issues: 0
linters:
enable:
- errorlint
- unconvert
- unparam
exclusions:
generated: disable
presets:
- comments
- std-error-handling
settings:
staticcheck:
# Enable all options, with some exceptions.
# For defaults, see https://golangci-lint.run/usage/linters/#staticcheck
checks:
- all
- -QF1008 # Omit embedded fields from selector expression; https://staticcheck.dev/docs/checks/#QF1008
- -ST1003 # Poorly chosen identifier; https://staticcheck.dev/docs/checks/#ST1003
formatters:
enable:
- gofumpt
- goimports
exclusions:
generated: disable

435
vendor/github.com/moby/go-archive/archive.go generated vendored
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@ -3,32 +3,24 @@ package archive
import (
"archive/tar"
"bufio"
"bytes"
"compress/bzip2"
"compress/gzip"
"context"
"encoding/binary"
"errors"
"fmt"
"io"
"os"
"os/exec"
"path/filepath"
"runtime"
"runtime/debug"
"strconv"
"strings"
"sync"
"sync/atomic"
"syscall"
"time"
"github.com/containerd/log"
"github.com/klauspost/compress/zstd"
"github.com/moby/patternmatcher"
"github.com/moby/sys/sequential"
"github.com/moby/sys/user"
"github.com/moby/go-archive/compression"
"github.com/moby/go-archive/tarheader"
)
// ImpliedDirectoryMode represents the mode (Unix permissions) applied to directories that are implied by files in a
@ -45,7 +37,9 @@ const ImpliedDirectoryMode = 0o755
type (
// Compression is the state represents if compressed or not.
Compression int
//
// Deprecated: use [compression.Compression].
Compression = compression.Compression
// WhiteoutFormat is the format of whiteouts unpacked
WhiteoutFormat int
@ -58,7 +52,7 @@ type (
TarOptions struct {
IncludeFiles []string
ExcludePatterns []string
Compression Compression
Compression compression.Compression
NoLchown bool
IDMap user.IdentityMapping
ChownOpts *ChownOpts
@ -102,11 +96,11 @@ func NewDefaultArchiver() *Archiver {
type breakoutError error
const (
Uncompressed Compression = 0 // Uncompressed represents the uncompressed.
Bzip2 Compression = 1 // Bzip2 is bzip2 compression algorithm.
Gzip Compression = 2 // Gzip is gzip compression algorithm.
Xz Compression = 3 // Xz is xz compression algorithm.
Zstd Compression = 4 // Zstd is zstd compression algorithm.
Uncompressed = compression.None // Deprecated: use [compression.None].
Bzip2 = compression.Bzip2 // Deprecated: use [compression.Bzip2].
Gzip = compression.Gzip // Deprecated: use [compression.Gzip].
Xz = compression.Xz // Deprecated: use [compression.Xz].
Zstd = compression.Zstd // Deprecated: use [compression.Zstd].
)
const (
@ -122,7 +116,7 @@ func IsArchivePath(path string) bool {
return false
}
defer file.Close()
rdr, err := DecompressStream(file)
rdr, err := compression.DecompressStream(file)
if err != nil {
return false
}
@ -132,242 +126,25 @@ func IsArchivePath(path string) bool {
return err == nil
}
const (
zstdMagicSkippableStart = 0x184D2A50
zstdMagicSkippableMask = 0xFFFFFFF0
)
var (
bzip2Magic = []byte{0x42, 0x5A, 0x68}
gzipMagic = []byte{0x1F, 0x8B, 0x08}
xzMagic = []byte{0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00}
zstdMagic = []byte{0x28, 0xb5, 0x2f, 0xfd}
)
type matcher = func([]byte) bool
func magicNumberMatcher(m []byte) matcher {
return func(source []byte) bool {
return bytes.HasPrefix(source, m)
}
}
// zstdMatcher detects zstd compression algorithm.
// Zstandard compressed data is made of one or more frames.
// There are two frame formats defined by Zstandard: Zstandard frames and Skippable frames.
// See https://datatracker.ietf.org/doc/html/rfc8878#section-3 for more details.
func zstdMatcher() matcher {
return func(source []byte) bool {
if bytes.HasPrefix(source, zstdMagic) {
// Zstandard frame
return true
}
// skippable frame
if len(source) < 8 {
return false
}
// magic number from 0x184D2A50 to 0x184D2A5F.
if binary.LittleEndian.Uint32(source[:4])&zstdMagicSkippableMask == zstdMagicSkippableStart {
return true
}
return false
}
}
// DetectCompression detects the compression algorithm of the source.
func DetectCompression(source []byte) Compression {
compressionMap := map[Compression]matcher{
Bzip2: magicNumberMatcher(bzip2Magic),
Gzip: magicNumberMatcher(gzipMagic),
Xz: magicNumberMatcher(xzMagic),
Zstd: zstdMatcher(),
}
for _, compression := range []Compression{Bzip2, Gzip, Xz, Zstd} {
fn := compressionMap[compression]
if fn(source) {
return compression
}
}
return Uncompressed
}
func xzDecompress(ctx context.Context, archive io.Reader) (io.ReadCloser, error) {
args := []string{"xz", "-d", "-c", "-q"}
return cmdStream(exec.CommandContext(ctx, args[0], args[1:]...), archive)
}
func gzDecompress(ctx context.Context, buf io.Reader) (io.ReadCloser, error) {
if noPigzEnv := os.Getenv("MOBY_DISABLE_PIGZ"); noPigzEnv != "" {
noPigz, err := strconv.ParseBool(noPigzEnv)
if err != nil {
log.G(ctx).WithError(err).Warn("invalid value in MOBY_DISABLE_PIGZ env var")
}
if noPigz {
log.G(ctx).Debugf("Use of pigz is disabled due to MOBY_DISABLE_PIGZ=%s", noPigzEnv)
return gzip.NewReader(buf)
}
}
unpigzPath, err := exec.LookPath("unpigz")
if err != nil {
log.G(ctx).Debugf("unpigz binary not found, falling back to go gzip library")
return gzip.NewReader(buf)
}
log.G(ctx).Debugf("Using %s to decompress", unpigzPath)
return cmdStream(exec.CommandContext(ctx, unpigzPath, "-d", "-c"), buf)
}
type readCloserWrapper struct {
io.Reader
closer func() error
closed atomic.Bool
}
func (r *readCloserWrapper) Close() error {
if !r.closed.CompareAndSwap(false, true) {
log.G(context.TODO()).Error("subsequent attempt to close readCloserWrapper")
if log.GetLevel() >= log.DebugLevel {
log.G(context.TODO()).Errorf("stack trace: %s", string(debug.Stack()))
}
return nil
}
if r.closer != nil {
return r.closer()
}
return nil
}
var bufioReader32KPool = &sync.Pool{
New: func() interface{} { return bufio.NewReaderSize(nil, 32*1024) },
}
type bufferedReader struct {
buf *bufio.Reader
}
func newBufferedReader(r io.Reader) *bufferedReader {
buf := bufioReader32KPool.Get().(*bufio.Reader)
buf.Reset(r)
return &bufferedReader{buf}
}
func (r *bufferedReader) Read(p []byte) (int, error) {
if r.buf == nil {
return 0, io.EOF
}
n, err := r.buf.Read(p)
if err == io.EOF {
r.buf.Reset(nil)
bufioReader32KPool.Put(r.buf)
r.buf = nil
}
return n, err
}
func (r *bufferedReader) Peek(n int) ([]byte, error) {
if r.buf == nil {
return nil, io.EOF
}
return r.buf.Peek(n)
//
// Deprecated: use [compression.Detect].
func DetectCompression(source []byte) compression.Compression {
return compression.Detect(source)
}
// DecompressStream decompresses the archive and returns a ReaderCloser with the decompressed archive.
//
// Deprecated: use [compression.DecompressStream].
func DecompressStream(archive io.Reader) (io.ReadCloser, error) {
buf := newBufferedReader(archive)
bs, err := buf.Peek(10)
if err != nil && err != io.EOF {
// Note: we'll ignore any io.EOF error because there are some odd
// cases where the layer.tar file will be empty (zero bytes) and
// that results in an io.EOF from the Peek() call. So, in those
// cases we'll just treat it as a non-compressed stream and
// that means just create an empty layer.
// See Issue 18170
return nil, err
}
compression := DetectCompression(bs)
switch compression {
case Uncompressed:
return &readCloserWrapper{
Reader: buf,
}, nil
case Gzip:
ctx, cancel := context.WithCancel(context.Background())
gzReader, err := gzDecompress(ctx, buf)
if err != nil {
cancel()
return nil, err
}
return &readCloserWrapper{
Reader: gzReader,
closer: func() error {
cancel()
return gzReader.Close()
},
}, nil
case Bzip2:
bz2Reader := bzip2.NewReader(buf)
return &readCloserWrapper{
Reader: bz2Reader,
}, nil
case Xz:
ctx, cancel := context.WithCancel(context.Background())
xzReader, err := xzDecompress(ctx, buf)
if err != nil {
cancel()
return nil, err
}
return &readCloserWrapper{
Reader: xzReader,
closer: func() error {
cancel()
return xzReader.Close()
},
}, nil
case Zstd:
zstdReader, err := zstd.NewReader(buf)
if err != nil {
return nil, err
}
return &readCloserWrapper{
Reader: zstdReader,
closer: func() error {
zstdReader.Close()
return nil
},
}, nil
default:
return nil, fmt.Errorf("Unsupported compression format %s", (&compression).Extension())
}
return compression.DecompressStream(archive)
}
type nopWriteCloser struct {
io.Writer
}
func (nopWriteCloser) Close() error { return nil }
// CompressStream compresses the dest with specified compression algorithm.
func CompressStream(dest io.Writer, compression Compression) (io.WriteCloser, error) {
switch compression {
case Uncompressed:
return nopWriteCloser{dest}, nil
case Gzip:
return gzip.NewWriter(dest), nil
case Bzip2, Xz:
// archive/bzip2 does not support writing, and there is no xz support at all
// However, this is not a problem as docker only currently generates gzipped tars
return nil, fmt.Errorf("Unsupported compression format %s", (&compression).Extension())
default:
return nil, fmt.Errorf("Unsupported compression format %s", (&compression).Extension())
}
//
// Deprecated: use [compression.CompressStream].
func CompressStream(dest io.Writer, comp compression.Compression) (io.WriteCloser, error) {
return compression.CompressStream(dest, comp)
}
// TarModifierFunc is a function that can be passed to ReplaceFileTarWrapper to
@ -416,7 +193,7 @@ func ReplaceFileTarWrapper(inputTarStream io.ReadCloser, mods map[string]TarModi
var originalHeader *tar.Header
for {
originalHeader, err = tarReader.Next()
if err == io.EOF {
if errors.Is(err, io.EOF) {
break
}
if err != nil {
@ -458,90 +235,11 @@ func ReplaceFileTarWrapper(inputTarStream io.ReadCloser, mods map[string]TarModi
return pipeReader
}
// Extension returns the extension of a file that uses the specified compression algorithm.
func (compression *Compression) Extension() string {
switch *compression {
case Uncompressed:
return "tar"
case Bzip2:
return "tar.bz2"
case Gzip:
return "tar.gz"
case Xz:
return "tar.xz"
case Zstd:
return "tar.zst"
}
return ""
}
// assert that we implement [tar.FileInfoNames].
//
// TODO(thaJeztah): disabled to allow compiling on < go1.23. un-comment once we drop support for older versions of go.
// var _ tar.FileInfoNames = (*nosysFileInfo)(nil)
// nosysFileInfo hides the system-dependent info of the wrapped FileInfo to
// prevent tar.FileInfoHeader from introspecting it and potentially calling into
// glibc.
//
// It implements [tar.FileInfoNames] to further prevent [tar.FileInfoHeader]
// from performing any lookups on go1.23 and up. see https://go.dev/issue/50102
type nosysFileInfo struct {
os.FileInfo
}
// Uname stubs out looking up username. It implements [tar.FileInfoNames]
// to prevent [tar.FileInfoHeader] from loading libraries to perform
// username lookups.
func (fi nosysFileInfo) Uname() (string, error) {
return "", nil
}
// Gname stubs out looking up group-name. It implements [tar.FileInfoNames]
// to prevent [tar.FileInfoHeader] from loading libraries to perform
// username lookups.
func (fi nosysFileInfo) Gname() (string, error) {
return "", nil
}
func (fi nosysFileInfo) Sys() interface{} {
// A Sys value of type *tar.Header is safe as it is system-independent.
// The tar.FileInfoHeader function copies the fields into the returned
// header without performing any OS lookups.
if sys, ok := fi.FileInfo.Sys().(*tar.Header); ok {
return sys
}
return nil
}
// sysStat, if non-nil, populates hdr from system-dependent fields of fi.
var sysStat func(fi os.FileInfo, hdr *tar.Header) error
// FileInfoHeaderNoLookups creates a partially-populated tar.Header from fi.
//
// Compared to the archive/tar.FileInfoHeader function, this function is safe to
// call from a chrooted process as it does not populate fields which would
// require operating system lookups. It behaves identically to
// tar.FileInfoHeader when fi is a FileInfo value returned from
// tar.Header.FileInfo().
//
// When fi is a FileInfo for a native file, such as returned from os.Stat() and
// os.Lstat(), the returned Header value differs from one returned from
// tar.FileInfoHeader in the following ways. The Uname and Gname fields are not
// set as OS lookups would be required to populate them. The AccessTime and
// ChangeTime fields are not currently set (not yet implemented) although that
// is subject to change. Callers which require the AccessTime or ChangeTime
// fields to be zeroed should explicitly zero them out in the returned Header
// value to avoid any compatibility issues in the future.
// Deprecated: use [tarheader.FileInfoHeaderNoLookups].
func FileInfoHeaderNoLookups(fi os.FileInfo, link string) (*tar.Header, error) {
hdr, err := tar.FileInfoHeader(nosysFileInfo{fi}, link)
if err != nil {
return nil, err
}
if sysStat != nil {
return hdr, sysStat(fi, hdr)
}
return hdr, nil
return tarheader.FileInfoHeaderNoLookups(fi, link)
}
// FileInfoHeader creates a populated Header from fi.
@ -552,7 +250,7 @@ func FileInfoHeaderNoLookups(fi os.FileInfo, link string) (*tar.Header, error) {
// precision, and the Uname and Gname fields are only set when fi is a FileInfo
// value returned from tar.Header.FileInfo().
func FileInfoHeader(name string, fi os.FileInfo, link string) (*tar.Header, error) {
hdr, err := FileInfoHeaderNoLookups(fi, link)
hdr, err := tarheader.FileInfoHeaderNoLookups(fi, link)
if err != nil {
return nil, err
}
@ -768,7 +466,7 @@ func createTarFile(path, extractDir string, hdr *tar.Header, reader io.Reader, o
case tar.TypeDir:
// Create directory unless it exists as a directory already.
// In that case we just want to merge the two
if fi, err := os.Lstat(path); !(err == nil && fi.IsDir()) {
if fi, err := os.Lstat(path); err != nil || !fi.IsDir() {
if err := os.Mkdir(path, hdrInfo.Mode()); err != nil {
return err
}
@ -908,8 +606,8 @@ func createTarFile(path, extractDir string, hdr *tar.Header, reader io.Reader, o
// Tar creates an archive from the directory at `path`, and returns it as a
// stream of bytes.
func Tar(path string, compression Compression) (io.ReadCloser, error) {
return TarWithOptions(path, &TarOptions{Compression: compression})
func Tar(path string, comp compression.Compression) (io.ReadCloser, error) {
return TarWithOptions(path, &TarOptions{Compression: comp})
}
// TarWithOptions creates an archive from the directory at `path`, only including files whose relative
@ -945,7 +643,7 @@ func NewTarballer(srcPath string, options *TarOptions) (*Tarballer, error) {
pipeReader, pipeWriter := io.Pipe()
compressWriter, err := CompressStream(pipeWriter, options.Compression)
compressWriter, err := compression.CompressStream(pipeWriter, options.Compression)
if err != nil {
return nil, err
}
@ -1031,7 +729,8 @@ func (t *Tarballer) Do() {
)
walkRoot := getWalkRoot(t.srcPath, include)
filepath.WalkDir(walkRoot, func(filePath string, f os.DirEntry, err error) error {
// TODO(thaJeztah): should this error be handled?
_ = filepath.WalkDir(walkRoot, func(filePath string, f os.DirEntry, err error) error {
if err != nil {
log.G(context.TODO()).Errorf("Tar: Can't stat file %s to tar: %s", t.srcPath, err)
return nil
@ -1135,7 +834,7 @@ func (t *Tarballer) Do() {
if err := ta.addTarFile(filePath, relFilePath); err != nil {
log.G(context.TODO()).Errorf("Can't add file %s to tar: %s", filePath, err)
// if pipe is broken, stop writing tar stream to it
if err == io.ErrClosedPipe {
if errors.Is(err, io.ErrClosedPipe) {
return err
}
}
@ -1155,7 +854,7 @@ func Unpack(decompressedArchive io.Reader, dest string, options *TarOptions) err
loop:
for {
hdr, err := tr.Next()
if err == io.EOF {
if errors.Is(err, io.EOF) {
// end of tar archive
break
}
@ -1217,7 +916,7 @@ loop:
continue
}
if !(fi.IsDir() && hdr.Typeflag == tar.TypeDir) {
if !fi.IsDir() || hdr.Typeflag != tar.TypeDir {
if err := os.RemoveAll(path); err != nil {
return err
}
@ -1309,7 +1008,7 @@ func UntarUncompressed(tarArchive io.Reader, dest string, options *TarOptions) e
// Handler for teasing out the automatic decompression
func untarHandler(tarArchive io.Reader, dest string, options *TarOptions, decompress bool) error {
if tarArchive == nil {
return fmt.Errorf("Empty archive")
return errors.New("empty archive")
}
dest = filepath.Clean(dest)
if options == nil {
@ -1321,7 +1020,7 @@ func untarHandler(tarArchive io.Reader, dest string, options *TarOptions, decomp
r := tarArchive
if decompress {
decompressedArchive, err := DecompressStream(tarArchive)
decompressedArchive, err := compression.DecompressStream(tarArchive)
if err != nil {
return err
}
@ -1335,15 +1034,14 @@ func untarHandler(tarArchive io.Reader, dest string, options *TarOptions, decomp
// TarUntar is a convenience function which calls Tar and Untar, with the output of one piped into the other.
// If either Tar or Untar fails, TarUntar aborts and returns the error.
func (archiver *Archiver) TarUntar(src, dst string) error {
archive, err := TarWithOptions(src, &TarOptions{Compression: Uncompressed})
archive, err := Tar(src, compression.None)
if err != nil {
return err
}
defer archive.Close()
options := &TarOptions{
return archiver.Untar(archive, dst, &TarOptions{
IDMap: archiver.IDMapping,
}
return archiver.Untar(archive, dst, options)
})
}
// UntarPath untar a file from path to a destination, src is the source tar file path.
@ -1353,10 +1051,9 @@ func (archiver *Archiver) UntarPath(src, dst string) error {
return err
}
defer archive.Close()
options := &TarOptions{
return archiver.Untar(archive, dst, &TarOptions{
IDMap: archiver.IDMapping,
}
return archiver.Untar(archive, dst, options)
})
}
// CopyWithTar creates a tar archive of filesystem path `src`, and
@ -1393,7 +1090,7 @@ func (archiver *Archiver) CopyFileWithTar(src, dst string) (err error) {
}
if srcSt.IsDir() {
return fmt.Errorf("Can't copy a directory")
return errors.New("can't copy a directory")
}
// Clean up the trailing slash. This must be done in an operating
@ -1421,7 +1118,7 @@ func (archiver *Archiver) CopyFileWithTar(src, dst string) (err error) {
}
defer srcF.Close()
hdr, err := FileInfoHeaderNoLookups(srcSt, "")
hdr, err := tarheader.FileInfoHeaderNoLookups(srcSt, "")
if err != nil {
return err
}
@ -1470,43 +1167,3 @@ func remapIDs(idMapping user.IdentityMapping, hdr *tar.Header) error {
hdr.Uid, hdr.Gid = uid, gid
return err
}
// cmdStream executes a command, and returns its stdout as a stream.
// If the command fails to run or doesn't complete successfully, an error
// will be returned, including anything written on stderr.
func cmdStream(cmd *exec.Cmd, input io.Reader) (io.ReadCloser, error) {
cmd.Stdin = input
pipeR, pipeW := io.Pipe()
cmd.Stdout = pipeW
var errBuf bytes.Buffer
cmd.Stderr = &errBuf
// Run the command and return the pipe
if err := cmd.Start(); err != nil {
return nil, err
}
// Ensure the command has exited before we clean anything up
done := make(chan struct{})
// Copy stdout to the returned pipe
go func() {
if err := cmd.Wait(); err != nil {
pipeW.CloseWithError(fmt.Errorf("%s: %s", err, errBuf.String()))
} else {
pipeW.Close()
}
close(done)
}()
return &readCloserWrapper{
Reader: pipeR,
closer: func() error {
// Close pipeR, and then wait for the command to complete before returning. We have to close pipeR first, as
// cmd.Wait waits for any non-file stdout/stderr/stdin to close.
err := pipeR.Close()
<-done
return err
},
}, nil
}

39
vendor/github.com/moby/go-archive/archive_unix.go generated vendored
View File

@ -7,17 +7,12 @@ import (
"errors"
"os"
"path/filepath"
"runtime"
"strings"
"syscall"
"golang.org/x/sys/unix"
)
func init() {
sysStat = statUnix
}
// addLongPathPrefix adds the Windows long path prefix to the path provided if
// it does not already have it. It is a no-op on platforms other than Windows.
func addLongPathPrefix(srcPath string) string {
@ -38,40 +33,6 @@ func chmodTarEntry(perm os.FileMode) os.FileMode {
return perm // noop for unix as golang APIs provide perm bits correctly
}
// statUnix populates hdr from system-dependent fields of fi without performing
// any OS lookups.
func statUnix(fi os.FileInfo, hdr *tar.Header) error {
// Devmajor and Devminor are only needed for special devices.
// In FreeBSD, RDev for regular files is -1 (unless overridden by FS):
// https://cgit.freebsd.org/src/tree/sys/kern/vfs_default.c?h=stable/13#n1531
// (NODEV is -1: https://cgit.freebsd.org/src/tree/sys/sys/param.h?h=stable/13#n241).
// ZFS in particular does not override the default:
// https://cgit.freebsd.org/src/tree/sys/contrib/openzfs/module/os/freebsd/zfs/zfs_vnops_os.c?h=stable/13#n2027
// Since `Stat_t.Rdev` is uint64, the cast turns -1 into (2^64 - 1).
// Such large values cannot be encoded in a tar header.
if runtime.GOOS == "freebsd" && hdr.Typeflag != tar.TypeBlock && hdr.Typeflag != tar.TypeChar {
return nil
}
s, ok := fi.Sys().(*syscall.Stat_t)
if !ok {
return nil
}
hdr.Uid = int(s.Uid)
hdr.Gid = int(s.Gid)
if s.Mode&unix.S_IFBLK != 0 ||
s.Mode&unix.S_IFCHR != 0 {
hdr.Devmajor = int64(unix.Major(uint64(s.Rdev))) //nolint: unconvert
hdr.Devminor = int64(unix.Minor(uint64(s.Rdev))) //nolint: unconvert
}
return nil
}
func getInodeFromStat(stat interface{}) (uint64, error) {
s, ok := stat.(*syscall.Stat_t)
if !ok {

5
vendor/github.com/moby/go-archive/archive_windows.go generated vendored
View File

@ -41,11 +41,6 @@ func chmodTarEntry(perm os.FileMode) os.FileMode {
return perm | 0o111
}
func setHeaderForSpecialDevice(hdr *tar.Header, name string, stat interface{}) (err error) {
// do nothing. no notion of Rdev, Nlink in stat on Windows
return
}
func getInodeFromStat(stat interface{}) (uint64, error) {
// do nothing. no notion of Inode in stat on Windows
return 0, nil

4
vendor/github.com/moby/go-archive/changes.go generated vendored
View File

@ -75,7 +75,7 @@ func sameFsTime(a, b time.Time) bool {
// Changes walks the path rw and determines changes for the files in the path,
// with respect to the parent layers
func Changes(layers []string, rw string) ([]Change, error) {
return changes(layers, rw, aufsDeletedFile, aufsMetadataSkip)
return collectChanges(layers, rw, aufsDeletedFile, aufsMetadataSkip)
}
func aufsMetadataSkip(path string) (skip bool, err error) {
@ -103,7 +103,7 @@ type (
deleteChange func(string, string, os.FileInfo) (string, error)
)
func changes(layers []string, rw string, dc deleteChange, sc skipChange) ([]Change, error) {
func collectChanges(layers []string, rw string, dc deleteChange, sc skipChange) ([]Change, error) {
var (
changes []Change
changedDirs = make(map[string]struct{})

9
vendor/github.com/moby/go-archive/changes_linux.go generated vendored
View File

@ -132,14 +132,7 @@ func (w *walker) walk(path string, i1, i2 os.FileInfo) (err error) {
ix1 := 0
ix2 := 0
for {
if ix1 >= len(names1) {
break
}
if ix2 >= len(names2) {
break
}
for ix1 < len(names1) && ix2 < len(names2) {
ni1 := names1[ix1]
ni2 := names2[ix2]

7
vendor/github.com/moby/go-archive/chrootarchive/archive.go generated vendored
View File

@ -1,7 +1,7 @@
package chrootarchive
import (
"fmt"
"errors"
"io"
"os"
"path/filepath"
@ -9,6 +9,7 @@ import (
"github.com/moby/sys/user"
"github.com/moby/go-archive"
"github.com/moby/go-archive/compression"
)
// NewArchiver returns a new Archiver which uses chrootarchive.Untar
@ -53,7 +54,7 @@ func UntarUncompressed(tarArchive io.Reader, dest string, options *archive.TarOp
// Handler for teasing out the automatic decompression
func untarHandler(tarArchive io.Reader, dest string, options *archive.TarOptions, decompress bool, root string) error {
if tarArchive == nil {
return fmt.Errorf("Empty archive")
return errors.New("empty archive")
}
if options == nil {
options = &archive.TarOptions{}
@ -77,7 +78,7 @@ func untarHandler(tarArchive io.Reader, dest string, options *archive.TarOptions
r := io.NopCloser(tarArchive)
if decompress {
decompressedArchive, err := archive.DecompressStream(tarArchive)
decompressedArchive, err := compression.DecompressStream(tarArchive)
if err != nil {
return err
}

3
vendor/github.com/moby/go-archive/chrootarchive/diff_unix.go generated vendored
View File

@ -9,6 +9,7 @@ import (
"github.com/moby/sys/userns"
"github.com/moby/go-archive"
"github.com/moby/go-archive/compression"
)
// applyLayerHandler parses a diff in the standard layer format from `layer`, and
@ -16,7 +17,7 @@ import (
// contents of the layer.
func applyLayerHandler(dest string, layer io.Reader, options *archive.TarOptions, decompress bool) (size int64, _ error) {
if decompress {
decompressed, err := archive.DecompressStream(layer)
decompressed, err := compression.DecompressStream(layer)
if err != nil {
return 0, err
}

5
vendor/github.com/moby/go-archive/chrootarchive/diff_windows.go generated vendored
View File

@ -6,6 +6,7 @@ import (
"path/filepath"
"github.com/moby/go-archive"
"github.com/moby/go-archive/compression"
)
// applyLayerHandler parses a diff in the standard layer format from `layer`, and
@ -13,7 +14,7 @@ import (
// contents of the layer.
func applyLayerHandler(dest string, layer io.Reader, options *archive.TarOptions, decompress bool) (size int64, err error) {
if decompress {
decompressed, err := archive.DecompressStream(layer)
decompressed, err := compression.DecompressStream(layer)
if err != nil {
return 0, err
}
@ -26,7 +27,7 @@ func applyLayerHandler(dest string, layer io.Reader, options *archive.TarOptions
dest = addLongPathPrefix(filepath.Clean(dest))
s, err := archive.UnpackLayer(dest, layer, nil)
if err != nil {
return 0, fmt.Errorf("ApplyLayer %s failed UnpackLayer to %s: %s", layer, dest, err)
return 0, fmt.Errorf("ApplyLayer %s failed UnpackLayer to %s: %w", layer, dest, err)
}
return s, nil

263
vendor/github.com/moby/go-archive/compression/compression.go generated vendored Normal file
View File

@ -0,0 +1,263 @@
package compression
import (
"bufio"
"bytes"
"compress/bzip2"
"compress/gzip"
"context"
"errors"
"fmt"
"io"
"os"
"os/exec"
"strconv"
"sync"
"github.com/containerd/log"
"github.com/klauspost/compress/zstd"
)
// Compression is the state represents if compressed or not.
type Compression int
const (
None Compression = 0 // None represents the uncompressed.
Bzip2 Compression = 1 // Bzip2 is bzip2 compression algorithm.
Gzip Compression = 2 // Gzip is gzip compression algorithm.
Xz Compression = 3 // Xz is xz compression algorithm.
Zstd Compression = 4 // Zstd is zstd compression algorithm.
)
// Extension returns the extension of a file that uses the specified compression algorithm.
func (c *Compression) Extension() string {
switch *c {
case None:
return "tar"
case Bzip2:
return "tar.bz2"
case Gzip:
return "tar.gz"
case Xz:
return "tar.xz"
case Zstd:
return "tar.zst"
default:
return ""
}
}
type readCloserWrapper struct {
io.Reader
closer func() error
}
func (r *readCloserWrapper) Close() error {
if r.closer != nil {
return r.closer()
}
return nil
}
type nopWriteCloser struct {
io.Writer
}
func (nopWriteCloser) Close() error { return nil }
var bufioReader32KPool = &sync.Pool{
New: func() interface{} { return bufio.NewReaderSize(nil, 32*1024) },
}
type bufferedReader struct {
buf *bufio.Reader
}
func newBufferedReader(r io.Reader) *bufferedReader {
buf := bufioReader32KPool.Get().(*bufio.Reader)
buf.Reset(r)
return &bufferedReader{buf}
}
func (r *bufferedReader) Read(p []byte) (int, error) {
if r.buf == nil {
return 0, io.EOF
}
n, err := r.buf.Read(p)
if errors.Is(err, io.EOF) {
r.buf.Reset(nil)
bufioReader32KPool.Put(r.buf)
r.buf = nil
}
return n, err
}
func (r *bufferedReader) Peek(n int) ([]byte, error) {
if r.buf == nil {
return nil, io.EOF
}
return r.buf.Peek(n)
}
// DecompressStream decompresses the archive and returns a ReaderCloser with the decompressed archive.
func DecompressStream(archive io.Reader) (io.ReadCloser, error) {
buf := newBufferedReader(archive)
bs, err := buf.Peek(10)
if err != nil && !errors.Is(err, io.EOF) {
// Note: we'll ignore any io.EOF error because there are some odd
// cases where the layer.tar file will be empty (zero bytes) and
// that results in an io.EOF from the Peek() call. So, in those
// cases we'll just treat it as a non-compressed stream and
// that means just create an empty layer.
// See Issue 18170
return nil, err
}
switch compression := Detect(bs); compression {
case None:
return &readCloserWrapper{
Reader: buf,
}, nil
case Gzip:
ctx, cancel := context.WithCancel(context.Background())
gzReader, err := gzipDecompress(ctx, buf)
if err != nil {
cancel()
return nil, err
}
return &readCloserWrapper{
Reader: gzReader,
closer: func() error {
cancel()
return gzReader.Close()
},
}, nil
case Bzip2:
bz2Reader := bzip2.NewReader(buf)
return &readCloserWrapper{
Reader: bz2Reader,
}, nil
case Xz:
ctx, cancel := context.WithCancel(context.Background())
xzReader, err := xzDecompress(ctx, buf)
if err != nil {
cancel()
return nil, err
}
return &readCloserWrapper{
Reader: xzReader,
closer: func() error {
cancel()
return xzReader.Close()
},
}, nil
case Zstd:
zstdReader, err := zstd.NewReader(buf)
if err != nil {
return nil, err
}
return &readCloserWrapper{
Reader: zstdReader,
closer: func() error {
zstdReader.Close()
return nil
},
}, nil
default:
return nil, fmt.Errorf("unsupported compression format (%d)", compression)
}
}
// CompressStream compresses the dest with specified compression algorithm.
func CompressStream(dest io.Writer, compression Compression) (io.WriteCloser, error) {
switch compression {
case None:
return nopWriteCloser{dest}, nil
case Gzip:
return gzip.NewWriter(dest), nil
case Bzip2:
// archive/bzip2 does not support writing.
return nil, errors.New("unsupported compression format: tar.bz2")
case Xz:
// there is no xz support at all
// However, this is not a problem as docker only currently generates gzipped tars
return nil, errors.New("unsupported compression format: tar.xz")
default:
return nil, fmt.Errorf("unsupported compression format (%d)", compression)
}
}
func xzDecompress(ctx context.Context, archive io.Reader) (io.ReadCloser, error) {
args := []string{"xz", "-d", "-c", "-q"}
return cmdStream(exec.CommandContext(ctx, args[0], args[1:]...), archive)
}
func gzipDecompress(ctx context.Context, buf io.Reader) (io.ReadCloser, error) {
if noPigzEnv := os.Getenv("MOBY_DISABLE_PIGZ"); noPigzEnv != "" {
noPigz, err := strconv.ParseBool(noPigzEnv)
if err != nil {
log.G(ctx).WithError(err).Warn("invalid value in MOBY_DISABLE_PIGZ env var")
}
if noPigz {
log.G(ctx).Debugf("Use of pigz is disabled due to MOBY_DISABLE_PIGZ=%s", noPigzEnv)
return gzip.NewReader(buf)
}
}
unpigzPath, err := exec.LookPath("unpigz")
if err != nil {
log.G(ctx).Debugf("unpigz binary not found, falling back to go gzip library")
return gzip.NewReader(buf)
}
log.G(ctx).Debugf("Using %s to decompress", unpigzPath)
return cmdStream(exec.CommandContext(ctx, unpigzPath, "-d", "-c"), buf)
}
// cmdStream executes a command, and returns its stdout as a stream.
// If the command fails to run or doesn't complete successfully, an error
// will be returned, including anything written on stderr.
func cmdStream(cmd *exec.Cmd, in io.Reader) (io.ReadCloser, error) {
reader, writer := io.Pipe()
cmd.Stdin = in
cmd.Stdout = writer
var errBuf bytes.Buffer
cmd.Stderr = &errBuf
// Run the command and return the pipe
if err := cmd.Start(); err != nil {
return nil, err
}
// Ensure the command has exited before we clean anything up
done := make(chan struct{})
// Copy stdout to the returned pipe
go func() {
if err := cmd.Wait(); err != nil {
_ = writer.CloseWithError(fmt.Errorf("%w: %s", err, errBuf.String()))
} else {
_ = writer.Close()
}
close(done)
}()
return &readCloserWrapper{
Reader: reader,
closer: func() error {
// Close pipeR, and then wait for the command to complete before returning. We have to close pipeR first, as
// cmd.Wait waits for any non-file stdout/stderr/stdin to close.
err := reader.Close()
<-done
return err
},
}, nil
}

65
vendor/github.com/moby/go-archive/compression/compression_detect.go generated vendored Normal file
View File

@ -0,0 +1,65 @@
package compression
import (
"bytes"
"encoding/binary"
)
const (
zstdMagicSkippableStart = 0x184D2A50
zstdMagicSkippableMask = 0xFFFFFFF0
)
var (
bzip2Magic = []byte{0x42, 0x5A, 0x68}
gzipMagic = []byte{0x1F, 0x8B, 0x08}
xzMagic = []byte{0xFD, 0x37, 0x7A, 0x58, 0x5A, 0x00}
zstdMagic = []byte{0x28, 0xb5, 0x2f, 0xfd}
)
type matcher = func([]byte) bool
// Detect detects the compression algorithm of the source.
func Detect(source []byte) Compression {
compressionMap := map[Compression]matcher{
Bzip2: magicNumberMatcher(bzip2Magic),
Gzip: magicNumberMatcher(gzipMagic),
Xz: magicNumberMatcher(xzMagic),
Zstd: zstdMatcher(),
}
for _, compression := range []Compression{Bzip2, Gzip, Xz, Zstd} {
fn := compressionMap[compression]
if fn(source) {
return compression
}
}
return None
}
func magicNumberMatcher(m []byte) matcher {
return func(source []byte) bool {
return bytes.HasPrefix(source, m)
}
}
// zstdMatcher detects zstd compression algorithm.
// Zstandard compressed data is made of one or more frames.
// There are two frame formats defined by Zstandard: Zstandard frames and Skippable frames.
// See https://datatracker.ietf.org/doc/html/rfc8878#section-3 for more details.
func zstdMatcher() matcher {
return func(source []byte) bool {
if bytes.HasPrefix(source, zstdMagic) {
// Zstandard frame
return true
}
// skippable frame
if len(source) < 8 {
return false
}
// magic number from 0x184D2A50 to 0x184D2A5F.
if binary.LittleEndian.Uint32(source[:4])&zstdMagicSkippableMask == zstdMagicSkippableStart {
return true
}
return false
}
}

3
vendor/github.com/moby/go-archive/copy.go generated vendored
View File

@ -128,7 +128,6 @@ func TarResourceRebase(sourcePath, rebaseName string) (content io.ReadCloser, _
func TarResourceRebaseOpts(sourceBase string, rebaseName string) *TarOptions {
filter := []string{sourceBase}
return &TarOptions{
Compression: Uncompressed,
IncludeFiles: filter,
IncludeSourceDir: true,
RebaseNames: map[string]string{
@ -335,7 +334,7 @@ func RebaseArchiveEntries(srcContent io.Reader, oldBase, newBase string) io.Read
for {
hdr, err := srcTar.Next()
if err == io.EOF {
if errors.Is(err, io.EOF) {
// Signals end of archive.
rebasedTar.Close()
w.Close()

4
vendor/github.com/moby/go-archive/dev_freebsd.go generated vendored
View File

@ -4,4 +4,6 @@ package archive
import "golang.org/x/sys/unix"
var mknod = unix.Mknod
func mknod(path string, mode uint32, dev uint64) error {
return unix.Mknod(path, mode, dev)
}

19
vendor/github.com/moby/go-archive/diff.go generated vendored
View File

@ -3,6 +3,7 @@ package archive
import (
"archive/tar"
"context"
"errors"
"fmt"
"io"
"os"
@ -11,6 +12,8 @@ import (
"strings"
"github.com/containerd/log"
"github.com/moby/go-archive/compression"
)
// UnpackLayer unpack `layer` to a `dest`. The stream `layer` can be
@ -35,7 +38,7 @@ func UnpackLayer(dest string, layer io.Reader, options *TarOptions) (size int64,
// Iterate through the files in the archive.
for {
hdr, err := tr.Next()
if err == io.EOF {
if errors.Is(err, io.EOF) {
// end of tar archive
break
}
@ -149,7 +152,7 @@ func UnpackLayer(dest string, layer io.Reader, options *TarOptions) (size int64,
// the layer is also a directory. Then we want to merge them (i.e.
// just apply the metadata from the layer).
if fi, err := os.Lstat(path); err == nil {
if !(fi.IsDir() && hdr.Typeflag == tar.TypeDir) {
if !fi.IsDir() || hdr.Typeflag != tar.TypeDir {
if err := os.RemoveAll(path); err != nil {
return 0, err
}
@ -165,7 +168,7 @@ func UnpackLayer(dest string, layer io.Reader, options *TarOptions) (size int64,
linkBasename := filepath.Base(hdr.Linkname)
srcHdr = aufsHardlinks[linkBasename]
if srcHdr == nil {
return 0, fmt.Errorf("Invalid aufs hardlink")
return 0, errors.New("invalid aufs hardlink")
}
tmpFile, err := os.Open(filepath.Join(aufsTempdir, linkBasename))
if err != nil {
@ -221,18 +224,18 @@ func ApplyUncompressedLayer(dest string, layer io.Reader, options *TarOptions) (
// IsEmpty checks if the tar archive is empty (doesn't contain any entries).
func IsEmpty(rd io.Reader) (bool, error) {
decompRd, err := DecompressStream(rd)
decompRd, err := compression.DecompressStream(rd)
if err != nil {
return true, fmt.Errorf("failed to decompress archive: %v", err)
return true, fmt.Errorf("failed to decompress archive: %w", err)
}
defer decompRd.Close()
tarReader := tar.NewReader(decompRd)
if _, err := tarReader.Next(); err != nil {
if err == io.EOF {
if errors.Is(err, io.EOF) {
return true, nil
}
return false, fmt.Errorf("failed to read next archive header: %v", err)
return false, fmt.Errorf("failed to read next archive header: %w", err)
}
return false, nil
@ -247,7 +250,7 @@ func applyLayerHandler(dest string, layer io.Reader, options *TarOptions, decomp
defer restore()
if decompress {
decompLayer, err := DecompressStream(layer)
decompLayer, err := compression.DecompressStream(layer)
if err != nil {
return 0, err
}

16
vendor/github.com/moby/go-archive/internal/mounttree/switchroot_linux.go generated vendored
View File

@ -26,7 +26,7 @@ func SwitchRoot(path string) error {
// setup oldRoot for pivot_root
pivotDir, err := os.MkdirTemp(path, ".pivot_root")
if err != nil {
return fmt.Errorf("Error setting up pivot dir: %v", err)
return fmt.Errorf("error setting up pivot dir: %w", err)
}
var mounted bool
@ -45,7 +45,7 @@ func SwitchRoot(path string) error {
// pivotDir doesn't exist if pivot_root failed and chroot+chdir was successful
// because we already cleaned it up on failed pivot_root
if errCleanup != nil && !os.IsNotExist(errCleanup) {
errCleanup = fmt.Errorf("Error cleaning up after pivot: %v", errCleanup)
errCleanup = fmt.Errorf("error cleaning up after pivot: %w", errCleanup)
if err == nil {
err = errCleanup
}
@ -55,7 +55,7 @@ func SwitchRoot(path string) error {
if err := unix.PivotRoot(path, pivotDir); err != nil {
// If pivot fails, fall back to the normal chroot after cleaning up temp dir
if err := os.Remove(pivotDir); err != nil {
return fmt.Errorf("Error cleaning up after failed pivot: %v", err)
return fmt.Errorf("error cleaning up after failed pivot: %w", err)
}
return realChroot(path)
}
@ -66,17 +66,17 @@ func SwitchRoot(path string) error {
pivotDir = filepath.Join("/", filepath.Base(pivotDir))
if err := unix.Chdir("/"); err != nil {
return fmt.Errorf("Error changing to new root: %v", err)
return fmt.Errorf("error changing to new root: %w", err)
}
// Make the pivotDir (where the old root lives) private so it can be unmounted without propagating to the host
if err := unix.Mount("", pivotDir, "", unix.MS_PRIVATE|unix.MS_REC, ""); err != nil {
return fmt.Errorf("Error making old root private after pivot: %v", err)
return fmt.Errorf("error making old root private after pivot: %w", err)
}
// Now unmount the old root so it's no longer visible from the new root
if err := unix.Unmount(pivotDir, unix.MNT_DETACH); err != nil {
return fmt.Errorf("Error while unmounting old root after pivot: %v", err)
return fmt.Errorf("error while unmounting old root after pivot: %w", err)
}
mounted = false
@ -85,10 +85,10 @@ func SwitchRoot(path string) error {
func realChroot(path string) error {
if err := unix.Chroot(path); err != nil {
return fmt.Errorf("Error after fallback to chroot: %v", err)
return fmt.Errorf("error after fallback to chroot: %w", err)
}
if err := unix.Chdir("/"); err != nil {
return fmt.Errorf("Error changing to new root after chroot: %v", err)
return fmt.Errorf("error changing to new root after chroot: %w", err)
}
return nil
}

67
vendor/github.com/moby/go-archive/tarheader/tarheader.go generated vendored Normal file
View File

@ -0,0 +1,67 @@
package tarheader
import (
"archive/tar"
"os"
)
// assert that we implement [tar.FileInfoNames].
var _ tar.FileInfoNames = (*nosysFileInfo)(nil)
// nosysFileInfo hides the system-dependent info of the wrapped FileInfo to
// prevent tar.FileInfoHeader from introspecting it and potentially calling into
// glibc.
//
// It implements [tar.FileInfoNames] to further prevent [tar.FileInfoHeader]
// from performing any lookups on go1.23 and up. see https://go.dev/issue/50102
type nosysFileInfo struct {
os.FileInfo
}
// Uname stubs out looking up username. It implements [tar.FileInfoNames]
// to prevent [tar.FileInfoHeader] from loading libraries to perform
// username lookups.
func (fi nosysFileInfo) Uname() (string, error) {
return "", nil
}
// Gname stubs out looking up group-name. It implements [tar.FileInfoNames]
// to prevent [tar.FileInfoHeader] from loading libraries to perform
// username lookups.
func (fi nosysFileInfo) Gname() (string, error) {
return "", nil
}
func (fi nosysFileInfo) Sys() interface{} {
// A Sys value of type *tar.Header is safe as it is system-independent.
// The tar.FileInfoHeader function copies the fields into the returned
// header without performing any OS lookups.
if sys, ok := fi.FileInfo.Sys().(*tar.Header); ok {
return sys
}
return nil
}
// FileInfoHeaderNoLookups creates a partially-populated tar.Header from fi.
//
// Compared to the archive/tar.FileInfoHeader function, this function is safe to
// call from a chrooted process as it does not populate fields which would
// require operating system lookups. It behaves identically to
// tar.FileInfoHeader when fi is a FileInfo value returned from
// tar.Header.FileInfo().
//
// When fi is a FileInfo for a native file, such as returned from os.Stat() and
// os.Lstat(), the returned Header value differs from one returned from
// tar.FileInfoHeader in the following ways. The Uname and Gname fields are not
// set as OS lookups would be required to populate them. The AccessTime and
// ChangeTime fields are not currently set (not yet implemented) although that
// is subject to change. Callers which require the AccessTime or ChangeTime
// fields to be zeroed should explicitly zero them out in the returned Header
// value to avoid any compatibility issues in the future.
func FileInfoHeaderNoLookups(fi os.FileInfo, link string) (*tar.Header, error) {
hdr, err := tar.FileInfoHeader(nosysFileInfo{fi}, link)
if err != nil {
return nil, err
}
return hdr, sysStat(fi, hdr)
}

46
vendor/github.com/moby/go-archive/tarheader/tarheader_unix.go generated vendored Normal file
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@ -0,0 +1,46 @@
//go:build !windows
package tarheader
import (
"archive/tar"
"os"
"runtime"
"syscall"
"golang.org/x/sys/unix"
)
// sysStat populates hdr from system-dependent fields of fi without performing
// any OS lookups.
func sysStat(fi os.FileInfo, hdr *tar.Header) error {
// Devmajor and Devminor are only needed for special devices.
// In FreeBSD, RDev for regular files is -1 (unless overridden by FS):
// https://cgit.freebsd.org/src/tree/sys/kern/vfs_default.c?h=stable/13#n1531
// (NODEV is -1: https://cgit.freebsd.org/src/tree/sys/sys/param.h?h=stable/13#n241).
// ZFS in particular does not override the default:
// https://cgit.freebsd.org/src/tree/sys/contrib/openzfs/module/os/freebsd/zfs/zfs_vnops_os.c?h=stable/13#n2027
// Since `Stat_t.Rdev` is uint64, the cast turns -1 into (2^64 - 1).
// Such large values cannot be encoded in a tar header.
if runtime.GOOS == "freebsd" && hdr.Typeflag != tar.TypeBlock && hdr.Typeflag != tar.TypeChar {
return nil
}
s, ok := fi.Sys().(*syscall.Stat_t)
if !ok {
return nil
}
hdr.Uid = int(s.Uid)
hdr.Gid = int(s.Gid)
if s.Mode&unix.S_IFBLK != 0 ||
s.Mode&unix.S_IFCHR != 0 {
hdr.Devmajor = int64(unix.Major(uint64(s.Rdev))) //nolint: unconvert
hdr.Devminor = int64(unix.Minor(uint64(s.Rdev))) //nolint: unconvert
}
return nil
}

12
vendor/github.com/moby/go-archive/tarheader/tarheader_windows.go generated vendored Normal file
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@ -0,0 +1,12 @@
package tarheader
import (
"archive/tar"
"os"
)
// sysStat populates hdr from system-dependent fields of fi without performing
// any OS lookups. It is a no-op on Windows.
func sysStat(os.FileInfo, *tar.Header) error {
return nil
}

4
vendor/modules.txt vendored
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@ -622,12 +622,14 @@ github.com/mitchellh/hashstructure/v2
# github.com/moby/docker-image-spec v1.3.1
## explicit; go 1.18
github.com/moby/docker-image-spec/specs-go/v1
# github.com/moby/go-archive v0.0.0-20250404171912-21f3f3385ab7
# github.com/moby/go-archive v0.1.0
## explicit; go 1.23.0
github.com/moby/go-archive
github.com/moby/go-archive/chrootarchive
github.com/moby/go-archive/compression
github.com/moby/go-archive/internal/mounttree
github.com/moby/go-archive/internal/unshare
github.com/moby/go-archive/tarheader
# github.com/moby/locker v1.0.1
## explicit; go 1.13
github.com/moby/locker