diff options
| -rw-r--r-- | go.mod | 2 | ||||
| -rw-r--r-- | go.sum | 4 | ||||
| -rw-r--r-- | vendor/github.com/containers/storage/.cirrus.yml | 4 | ||||
| -rw-r--r-- | vendor/github.com/containers/storage/Vagrantfile | 25 | ||||
| -rw-r--r-- | vendor/github.com/containers/storage/go.mod | 1 | ||||
| -rw-r--r-- | vendor/github.com/containers/storage/go.sum | 2 | ||||
| -rw-r--r-- | vendor/github.com/containers/storage/pkg/archive/archive.go | 7 | ||||
| -rw-r--r-- | vendor/github.com/containers/storage/pkg/chunked/storage_linux.go | 327 | ||||
| -rw-r--r-- | vendor/github.com/containers/storage/types/options.go | 4 | ||||
| -rw-r--r-- | vendor/modules.txt | 2 |
10 files changed, 286 insertions, 92 deletions
@@ -17,7 +17,7 @@ require ( github.com/containers/image/v5 v5.17.1-0.20211129144953-4f6d0b45be6c github.com/containers/ocicrypt v1.1.2 github.com/containers/psgo v1.7.1 - github.com/containers/storage v1.37.1-0.20211122214631-59ba58582415 + github.com/containers/storage v1.37.1-0.20211130181259-1a158c89a518 github.com/coreos/go-systemd/v22 v22.3.2 github.com/coreos/stream-metadata-go v0.0.0-20210225230131-70edb9eb47b3 github.com/cyphar/filepath-securejoin v0.2.3 @@ -284,8 +284,8 @@ github.com/containers/storage v1.35.0/go.mod h1:qzYhasQP2/V9D9XdO+vRwkHBhsBO0ozn github.com/containers/storage v1.36.0/go.mod h1:vbd3SKVQNHdmU5qQI6hTEcKPxnZkGqydG4f6uwrI5a8= github.com/containers/storage v1.37.0/go.mod h1:kqeJeS0b7DO2ZT1nVWs0XufrmPFbgV3c+Q/45RlH6r4= github.com/containers/storage v1.37.1-0.20211119174841-bf170b3ddac0/go.mod h1:XjCNlt5JUUmRuTJXhFxHb9hHGPho7DNg3o4N/14prdQ= -github.com/containers/storage v1.37.1-0.20211122214631-59ba58582415 h1:iqTDpYOxZibrkC7Mo7gCXuJDIT7wyIU432RTmRhlZqY= -github.com/containers/storage v1.37.1-0.20211122214631-59ba58582415/go.mod h1:hvKpaiPRALDI7oz4Jx+AEch8iS/viRnc22HPilQROWU= +github.com/containers/storage v1.37.1-0.20211130181259-1a158c89a518 h1:p44O35V8XCefRxOxU1aY6eT9XNMxkWA1drtJpsl211c= +github.com/containers/storage v1.37.1-0.20211130181259-1a158c89a518/go.mod h1:T5DX08T/eKKRs0WGDhC/ztngMSth6YuHq15eF8C/Y5A= github.com/coreos/bbolt v1.3.2/go.mod h1:iRUV2dpdMOn7Bo10OQBFzIJO9kkE559Wcmn+qkEiiKk= github.com/coreos/etcd v3.3.10+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE= github.com/coreos/etcd v3.3.13+incompatible/go.mod h1:uF7uidLiAD3TWHmW31ZFd/JWoc32PjwdhPthX9715RE= diff --git a/vendor/github.com/containers/storage/.cirrus.yml b/vendor/github.com/containers/storage/.cirrus.yml index d080d790c..726acc3ae 100644 --- a/vendor/github.com/containers/storage/.cirrus.yml +++ b/vendor/github.com/containers/storage/.cirrus.yml @@ -17,8 +17,8 @@ env: #### #### Cache-image names to test with (double-quotes around names are critical) ### - FEDORA_NAME: "fedora-34" - PRIOR_FEDORA_NAME: "fedora-33" + FEDORA_NAME: "fedora-35" + PRIOR_FEDORA_NAME: "fedora-34" UBUNTU_NAME: "ubuntu-2104" # GCE project where images live diff --git a/vendor/github.com/containers/storage/Vagrantfile b/vendor/github.com/containers/storage/Vagrantfile deleted file mode 100644 index c82c1f81b..000000000 --- a/vendor/github.com/containers/storage/Vagrantfile +++ /dev/null @@ -1,25 +0,0 @@ -# -*- mode: ruby -*- -# vi: set ft=ruby : -# -# The fedora/28-cloud-base and debian/jessie64 boxes are also available for -# the "virtualbox" provider. Set the VAGRANT_PROVIDER environment variable to -# "virtualbox" to use them instead. -# -Vagrant.configure("2") do |config| - config.vm.define "fedora" do |c| - c.vm.box = "fedora/28-cloud-base" - c.vm.synced_folder ".", "/vagrant", type: "rsync", - rsync__exclude: "bundles", rsync__args: ["-vadz", "--delete"] - c.vm.provision "shell", inline: <<-SHELL - sudo /vagrant/vagrant/provision.sh - SHELL - end - config.vm.define "debian" do |c| - c.vm.box = "debian/jessie64" - c.vm.synced_folder ".", "/vagrant", type: "rsync", - rsync__exclude: "bundles", rsync__args: ["-vadz", "--delete"] - c.vm.provision "shell", inline: <<-SHELL - sudo /vagrant/vagrant/provision.sh - SHELL - end -end diff --git a/vendor/github.com/containers/storage/go.mod b/vendor/github.com/containers/storage/go.mod index 04d5adac4..57b634f17 100644 --- a/vendor/github.com/containers/storage/go.mod +++ b/vendor/github.com/containers/storage/go.mod @@ -7,6 +7,7 @@ require ( github.com/Microsoft/go-winio v0.5.1 github.com/Microsoft/hcsshim v0.9.1 github.com/containerd/stargz-snapshotter/estargz v0.10.1 + github.com/cyphar/filepath-securejoin v0.2.3 github.com/docker/go-units v0.4.0 github.com/google/go-intervals v0.0.2 github.com/hashicorp/go-multierror v1.1.1 diff --git a/vendor/github.com/containers/storage/go.sum b/vendor/github.com/containers/storage/go.sum index 35328e287..94d46b21a 100644 --- a/vendor/github.com/containers/storage/go.sum +++ b/vendor/github.com/containers/storage/go.sum @@ -218,6 +218,8 @@ github.com/cpuguy83/go-md2man/v2 v2.0.0/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsr github.com/creack/pty v1.1.7/go.mod h1:lj5s0c3V2DBrqTV7llrYr5NG6My20zk30Fl46Y7DoTY= github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E= github.com/cyphar/filepath-securejoin v0.2.2/go.mod h1:FpkQEhXnPnOthhzymB7CGsFk2G9VLXONKD9G7QGMM+4= +github.com/cyphar/filepath-securejoin v0.2.3 h1:YX6ebbZCZP7VkM3scTTokDgBL2TY741X51MTk3ycuNI= +github.com/cyphar/filepath-securejoin v0.2.3/go.mod h1:aPGpWjXOXUn2NCNjFvBE6aRxGGx79pTxQpKOJNYHHl4= github.com/d2g/dhcp4 v0.0.0-20170904100407-a1d1b6c41b1c/go.mod h1:Ct2BUK8SB0YC1SMSibvLzxjeJLnrYEVLULFNiHY9YfQ= github.com/d2g/dhcp4client v1.0.0/go.mod h1:j0hNfjhrt2SxUOw55nL0ATM/z4Yt3t2Kd1mW34z5W5s= github.com/d2g/dhcp4server v0.0.0-20181031114812-7d4a0a7f59a5/go.mod h1:Eo87+Kg/IX2hfWJfwxMzLyuSZyxSoAug2nGa1G2QAi8= diff --git a/vendor/github.com/containers/storage/pkg/archive/archive.go b/vendor/github.com/containers/storage/pkg/archive/archive.go index 76544ff28..e7c4cfcf1 100644 --- a/vendor/github.com/containers/storage/pkg/archive/archive.go +++ b/vendor/github.com/containers/storage/pkg/archive/archive.go @@ -77,6 +77,10 @@ const ( containersOverrideXattr = "user.containers.override_stat" ) +var xattrsToIgnore = map[string]interface{}{ + "security.selinux": true, +} + // Archiver allows the reuse of most utility functions of this package with a // pluggable Untar function. To facilitate the passing of specific id mappings // for untar, an archiver can be created with maps which will then be passed to @@ -743,6 +747,9 @@ func createTarFile(path, extractDir string, hdr *tar.Header, reader io.Reader, L var errs []string for key, value := range hdr.Xattrs { + if _, found := xattrsToIgnore[key]; found { + continue + } if err := system.Lsetxattr(path, key, []byte(value), 0); err != nil { if errors.Is(err, syscall.ENOTSUP) || (inUserns && errors.Is(err, syscall.EPERM)) { // We ignore errors here because not all graphdrivers support diff --git a/vendor/github.com/containers/storage/pkg/chunked/storage_linux.go b/vendor/github.com/containers/storage/pkg/chunked/storage_linux.go index d18ab299b..52d21d689 100644 --- a/vendor/github.com/containers/storage/pkg/chunked/storage_linux.go +++ b/vendor/github.com/containers/storage/pkg/chunked/storage_linux.go @@ -13,6 +13,7 @@ import ( "reflect" "sort" "strings" + "sync/atomic" "syscall" "time" @@ -25,6 +26,7 @@ import ( "github.com/containers/storage/pkg/idtools" "github.com/containers/storage/pkg/system" "github.com/containers/storage/types" + securejoin "github.com/cyphar/filepath-securejoin" "github.com/klauspost/compress/zstd" "github.com/klauspost/pgzip" digest "github.com/opencontainers/go-digest" @@ -57,6 +59,10 @@ type chunkedDiffer struct { gzipReader *pgzip.Reader } +var xattrsToIgnore = map[string]interface{}{ + "security.selinux": true, +} + func timeToTimespec(time time.Time) (ts unix.Timespec) { if time.IsZero() { // Return UTIME_OMIT special value @@ -89,7 +95,7 @@ func copyFileContent(srcFd int, destFile string, dirfd int, mode os.FileMode, us src := fmt.Sprintf("/proc/self/fd/%d", srcFd) st, err := os.Stat(src) if err != nil { - return nil, -1, err + return nil, -1, fmt.Errorf("copy file content for %q: %w", destFile, err) } copyWithFileRange, copyWithFileClone := true, true @@ -111,15 +117,15 @@ func copyFileContent(srcFd int, destFile string, dirfd int, mode os.FileMode, us // If the destination file already exists, we shouldn't blow it away dstFile, err := openFileUnderRoot(destFile, dirfd, newFileFlags, mode) if err != nil { - return nil, -1, err + return nil, -1, fmt.Errorf("open file %q under rootfs for copy: %w", destFile, err) } err = driversCopy.CopyRegularToFile(src, dstFile, st, ©WithFileRange, ©WithFileClone) if err != nil { dstFile.Close() - return nil, -1, err + return nil, -1, fmt.Errorf("copy to file %q under rootfs: %w", destFile, err) } - return dstFile, st.Size(), err + return dstFile, st.Size(), nil } func prepareOtherLayersCache(layersMetadata map[string][]internal.FileMetadata) map[string]map[string][]*internal.FileMetadata { @@ -153,7 +159,7 @@ func getLayersCache(store storage.Store) (map[string][]internal.FileMetadata, ma defer manifestReader.Close() manifest, err := ioutil.ReadAll(manifestReader) if err != nil { - return nil, nil, err + return nil, nil, fmt.Errorf("open manifest file for layer %q: %w", r.ID, err) } var toc internal.TOC if err := json.Unmarshal(manifest, &toc); err != nil { @@ -162,7 +168,7 @@ func getLayersCache(store storage.Store) (map[string][]internal.FileMetadata, ma layersMetadata[r.ID] = toc.Entries target, err := store.DifferTarget(r.ID) if err != nil { - return nil, nil, err + return nil, nil, fmt.Errorf("get checkout directory layer %q: %w", r.ID, err) } layersTarget[r.ID] = target } @@ -184,7 +190,7 @@ func GetDiffer(ctx context.Context, store storage.Store, blobSize int64, annotat func makeZstdChunkedDiffer(ctx context.Context, store storage.Store, blobSize int64, annotations map[string]string, iss ImageSourceSeekable) (*chunkedDiffer, error) { manifest, tocOffset, err := readZstdChunkedManifest(iss, blobSize, annotations) if err != nil { - return nil, err + return nil, fmt.Errorf("read zstd:chunked manifest: %w", err) } layersMetadata, layersTarget, err := getLayersCache(store) if err != nil { @@ -204,7 +210,7 @@ func makeZstdChunkedDiffer(ctx context.Context, store storage.Store, blobSize in func makeEstargzChunkedDiffer(ctx context.Context, store storage.Store, blobSize int64, annotations map[string]string, iss ImageSourceSeekable) (*chunkedDiffer, error) { manifest, tocOffset, err := readEstargzChunkedManifest(iss, blobSize, annotations) if err != nil { - return nil, err + return nil, fmt.Errorf("read zstd:chunked manifest: %w", err) } layersMetadata, layersTarget, err := getLayersCache(store) if err != nil { @@ -230,21 +236,21 @@ func makeEstargzChunkedDiffer(ctx context.Context, store storage.Store, blobSize func copyFileFromOtherLayer(file *internal.FileMetadata, source string, otherFile *internal.FileMetadata, dirfd int, useHardLinks bool) (bool, *os.File, int64, error) { srcDirfd, err := unix.Open(source, unix.O_RDONLY, 0) if err != nil { - return false, nil, 0, err + return false, nil, 0, fmt.Errorf("open source file %q: %w", source, err) } defer unix.Close(srcDirfd) srcFile, err := openFileUnderRoot(otherFile.Name, srcDirfd, unix.O_RDONLY, 0) if err != nil { - return false, nil, 0, err + return false, nil, 0, fmt.Errorf("open source file %q under target rootfs: %w", otherFile.Name, err) } defer srcFile.Close() dstFile, written, err := copyFileContent(int(srcFile.Fd()), file.Name, dirfd, 0, useHardLinks) if err != nil { - return false, nil, 0, err + return false, nil, 0, fmt.Errorf("copy content to %q: %w", file.Name, err) } - return true, dstFile, written, err + return true, dstFile, written, nil } // canDedupMetadataWithHardLink says whether it is possible to deduplicate file with otherFile. @@ -280,10 +286,6 @@ func canDedupFileWithHardLink(file *internal.FileMetadata, fd int, s os.FileInfo return false } - xattrsToIgnore := map[string]interface{}{ - "security.selinux": true, - } - xattrs := make(map[string]string) for _, x := range listXattrs { v, err := system.Lgetxattr(path, x) @@ -510,7 +512,7 @@ type missingChunk struct { } // setFileAttrs sets the file attributes for file given metadata -func setFileAttrs(file *os.File, mode os.FileMode, metadata *internal.FileMetadata, options *archive.TarOptions) error { +func setFileAttrs(dirfd int, file *os.File, mode os.FileMode, metadata *internal.FileMetadata, options *archive.TarOptions, usePath bool) error { if file == nil || file.Fd() < 0 { return errors.Errorf("invalid file") } @@ -520,54 +522,237 @@ func setFileAttrs(file *os.File, mode os.FileMode, metadata *internal.FileMetada if err != nil { return err } + + // If it is a symlink, force to use the path if t == tar.TypeSymlink { - return nil + usePath = true + } + + baseName := "" + if usePath { + dirName := filepath.Dir(metadata.Name) + if dirName != "" { + parentFd, err := openFileUnderRoot(dirName, dirfd, unix.O_PATH|unix.O_DIRECTORY, 0) + if err != nil { + return err + } + defer parentFd.Close() + + dirfd = int(parentFd.Fd()) + } + baseName = filepath.Base(metadata.Name) + } + + doChown := func() error { + if usePath { + return unix.Fchownat(dirfd, baseName, metadata.UID, metadata.GID, unix.AT_SYMLINK_NOFOLLOW) + } + return unix.Fchown(fd, metadata.UID, metadata.GID) + } + + doSetXattr := func(k string, v []byte) error { + return unix.Fsetxattr(fd, k, v, 0) + } + + doUtimes := func() error { + ts := []unix.Timespec{timeToTimespec(metadata.AccessTime), timeToTimespec(metadata.ModTime)} + if usePath { + return unix.UtimesNanoAt(dirfd, baseName, ts, unix.AT_SYMLINK_NOFOLLOW) + } + return unix.UtimesNanoAt(unix.AT_FDCWD, fmt.Sprintf("/proc/self/fd/%d", fd), ts, 0) + } + + doChmod := func() error { + if usePath { + return unix.Fchmodat(dirfd, baseName, uint32(mode), unix.AT_SYMLINK_NOFOLLOW) + } + return unix.Fchmod(fd, uint32(mode)) } - if err := unix.Fchown(fd, metadata.UID, metadata.GID); err != nil { + if err := doChown(); err != nil { if !options.IgnoreChownErrors { - return err + return fmt.Errorf("chown %q to %d:%d: %w", metadata.Name, metadata.UID, metadata.GID, err) } } + canIgnore := func(err error) bool { + return err == nil || errors.Is(err, unix.ENOSYS) || errors.Is(err, unix.ENOTSUP) + } + for k, v := range metadata.Xattrs { + if _, found := xattrsToIgnore[k]; found { + continue + } data, err := base64.StdEncoding.DecodeString(v) if err != nil { - return err + return fmt.Errorf("decode xattr %q: %w", v, err) } - if err := unix.Fsetxattr(fd, k, data, 0); err != nil { - return err + if err := doSetXattr(k, data); !canIgnore(err) { + return fmt.Errorf("set xattr %s=%q for %q: %w", k, data, metadata.Name, err) } } - ts := []unix.Timespec{timeToTimespec(metadata.AccessTime), timeToTimespec(metadata.ModTime)} - if err := unix.UtimesNanoAt(fd, "", ts, 0); err != nil && errors.Is(err, unix.ENOSYS) { - return err + if err := doUtimes(); !canIgnore(err) { + return fmt.Errorf("set utimes for %q: %w", metadata.Name, err) } - if err := unix.Fchmod(fd, uint32(mode)); err != nil { - return err + if err := doChmod(); !canIgnore(err) { + return fmt.Errorf("chmod %q: %w", metadata.Name, err) } return nil } +func openFileUnderRootFallback(dirfd int, name string, flags uint64, mode os.FileMode) (int, error) { + root := fmt.Sprintf("/proc/self/fd/%d", dirfd) + + targetRoot, err := os.Readlink(root) + if err != nil { + return -1, err + } + + hasNoFollow := (flags & unix.O_NOFOLLOW) != 0 + + fd := -1 + // If O_NOFOLLOW is specified in the flags, then resolve only the parent directory and use the + // last component as the path to openat(). + if hasNoFollow { + dirName := filepath.Dir(name) + if dirName != "" { + newRoot, err := securejoin.SecureJoin(root, filepath.Dir(name)) + if err != nil { + return -1, err + } + root = newRoot + } + + parentDirfd, err := unix.Open(root, unix.O_PATH, 0) + if err != nil { + return -1, err + } + defer unix.Close(parentDirfd) + + fd, err = unix.Openat(parentDirfd, filepath.Base(name), int(flags), uint32(mode)) + if err != nil { + return -1, err + } + } else { + newPath, err := securejoin.SecureJoin(root, name) + if err != nil { + return -1, err + } + fd, err = unix.Openat(dirfd, newPath, int(flags), uint32(mode)) + if err != nil { + return -1, err + } + } + + target, err := os.Readlink(fmt.Sprintf("/proc/self/fd/%d", fd)) + if err != nil { + unix.Close(fd) + return -1, err + } + + // Add an additional check to make sure the opened fd is inside the rootfs + if !strings.HasPrefix(target, targetRoot) { + unix.Close(fd) + return -1, fmt.Errorf("error while resolving %q. It resolves outside the root directory", name) + } + + return fd, err +} + +func openFileUnderRootOpenat2(dirfd int, name string, flags uint64, mode os.FileMode) (int, error) { + how := unix.OpenHow{ + Flags: flags, + Mode: uint64(mode & 07777), + Resolve: unix.RESOLVE_IN_ROOT, + } + return unix.Openat2(dirfd, name, &how) +} + +// skipOpenat2 is set when openat2 is not supported by the underlying kernel and avoid +// using it again. +var skipOpenat2 int32 + +// openFileUnderRootRaw tries to open a file using openat2 and if it is not supported fallbacks to a +// userspace lookup. +func openFileUnderRootRaw(dirfd int, name string, flags uint64, mode os.FileMode) (int, error) { + var fd int + var err error + if atomic.LoadInt32(&skipOpenat2) > 0 { + fd, err = openFileUnderRootFallback(dirfd, name, flags, mode) + } else { + fd, err = openFileUnderRootOpenat2(dirfd, name, flags, mode) + // If the function failed with ENOSYS, switch off the support for openat2 + // and fallback to using safejoin. + if err != nil && errors.Is(err, unix.ENOSYS) { + atomic.StoreInt32(&skipOpenat2, 1) + fd, err = openFileUnderRootFallback(dirfd, name, flags, mode) + } + } + return fd, err +} + // openFileUnderRoot safely opens a file under the specified root directory using openat2 // name is the path to open relative to dirfd. // dirfd is an open file descriptor to the target checkout directory. -// flags are the flags top pass to the open syscall. +// flags are the flags to pass to the open syscall. // mode specifies the mode to use for newly created files. func openFileUnderRoot(name string, dirfd int, flags uint64, mode os.FileMode) (*os.File, error) { - how := unix.OpenHow{ - Flags: flags, - Mode: uint64(mode & 07777), - Resolve: unix.RESOLVE_IN_ROOT, + fd, err := openFileUnderRootRaw(dirfd, name, flags, mode) + if err == nil { + return os.NewFile(uintptr(fd), name), nil + } + + hasCreate := (flags & unix.O_CREAT) != 0 + if errors.Is(err, unix.ENOENT) && hasCreate { + parent := filepath.Dir(name) + if parent != "" { + newDirfd, err2 := openOrCreateDirUnderRoot(parent, dirfd, 0) + if err2 == nil { + defer newDirfd.Close() + fd, err := openFileUnderRootRaw(dirfd, name, flags, mode) + if err == nil { + return os.NewFile(uintptr(fd), name), nil + } + } + } } + return nil, fmt.Errorf("open %q under the rootfs: %w", name, err) +} - fd, err := unix.Openat2(dirfd, name, &how) - if err != nil { - return nil, err +// openOrCreateDirUnderRoot safely opens a directory or create it if it is missing. +// name is the path to open relative to dirfd. +// dirfd is an open file descriptor to the target checkout directory. +// mode specifies the mode to use for newly created files. +func openOrCreateDirUnderRoot(name string, dirfd int, mode os.FileMode) (*os.File, error) { + fd, err := openFileUnderRootRaw(dirfd, name, unix.O_DIRECTORY|unix.O_RDONLY, mode) + if err == nil { + return os.NewFile(uintptr(fd), name), nil + } + + if errors.Is(err, unix.ENOENT) { + parent := filepath.Dir(name) + if parent != "" { + pDir, err2 := openOrCreateDirUnderRoot(parent, dirfd, mode) + if err2 != nil { + return nil, err + } + defer pDir.Close() + + baseName := filepath.Base(name) + + if err2 := unix.Mkdirat(int(pDir.Fd()), baseName, 0755); err2 != nil { + return nil, err + } + + fd, err = openFileUnderRootRaw(int(pDir.Fd()), baseName, unix.O_DIRECTORY|unix.O_RDONLY, mode) + if err == nil { + return os.NewFile(uintptr(fd), name), nil + } + } } - return os.NewFile(uintptr(fd), name), nil + return nil, err } func (c *chunkedDiffer) createFileFromCompressedStream(dest string, dirfd int, reader io.Reader, mode os.FileMode, metadata *internal.FileMetadata, options *archive.TarOptions) (err error) { @@ -631,7 +816,7 @@ func (c *chunkedDiffer) createFileFromCompressedStream(dest string, dirfd int, r if digester.Digest() != manifestChecksum { return fmt.Errorf("checksum mismatch for %q", dest) } - return setFileAttrs(file, mode, metadata, options) + return setFileAttrs(dirfd, file, mode, metadata, options, false) } func (c *chunkedDiffer) storeMissingFiles(streams chan io.ReadCloser, errs chan error, dest string, dirfd int, missingChunks []missingChunk, options *archive.TarOptions) error { @@ -755,13 +940,13 @@ func (c *chunkedDiffer) retrieveMissingFiles(dest string, dirfd int, missingChun return nil } -func safeMkdir(dirfd int, mode os.FileMode, metadata *internal.FileMetadata, options *archive.TarOptions) error { - parent := filepath.Dir(metadata.Name) - base := filepath.Base(metadata.Name) +func safeMkdir(dirfd int, mode os.FileMode, name string, metadata *internal.FileMetadata, options *archive.TarOptions) error { + parent := filepath.Dir(name) + base := filepath.Base(name) parentFd := dirfd if parent != "." { - parentFile, err := openFileUnderRoot(parent, dirfd, unix.O_DIRECTORY|unix.O_PATH|unix.O_RDONLY, 0) + parentFile, err := openOrCreateDirUnderRoot(parent, dirfd, 0) if err != nil { return err } @@ -771,21 +956,21 @@ func safeMkdir(dirfd int, mode os.FileMode, metadata *internal.FileMetadata, opt if err := unix.Mkdirat(parentFd, base, uint32(mode)); err != nil { if !os.IsExist(err) { - return err + return fmt.Errorf("mkdir %q: %w", name, err) } } - file, err := openFileUnderRoot(metadata.Name, dirfd, unix.O_RDONLY, 0) + file, err := openFileUnderRoot(name, dirfd, unix.O_DIRECTORY|unix.O_RDONLY, 0) if err != nil { return err } defer file.Close() - return setFileAttrs(file, mode, metadata, options) + return setFileAttrs(dirfd, file, mode, metadata, options, false) } func safeLink(dirfd int, mode os.FileMode, metadata *internal.FileMetadata, options *archive.TarOptions) error { - sourceFile, err := openFileUnderRoot(metadata.Linkname, dirfd, unix.O_RDONLY, 0) + sourceFile, err := openFileUnderRoot(metadata.Linkname, dirfd, unix.O_PATH|unix.O_RDONLY|unix.O_NOFOLLOW, 0) if err != nil { return err } @@ -794,7 +979,7 @@ func safeLink(dirfd int, mode os.FileMode, metadata *internal.FileMetadata, opti destDir, destBase := filepath.Dir(metadata.Name), filepath.Base(metadata.Name) destDirFd := dirfd if destDir != "." { - f, err := openFileUnderRoot(destDir, dirfd, unix.O_RDONLY, 0) + f, err := openOrCreateDirUnderRoot(destDir, dirfd, 0) if err != nil { return err } @@ -804,23 +989,33 @@ func safeLink(dirfd int, mode os.FileMode, metadata *internal.FileMetadata, opti err = doHardLink(int(sourceFile.Fd()), destDirFd, destBase) if err != nil { - return err + return fmt.Errorf("create hardlink %q pointing to %q: %w", metadata.Name, metadata.Linkname, err) } - newFile, err := openFileUnderRoot(metadata.Name, dirfd, unix.O_WRONLY, 0) + newFile, err := openFileUnderRoot(metadata.Name, dirfd, unix.O_WRONLY|unix.O_NOFOLLOW, 0) if err != nil { + // If the target is a symlink, open the file with O_PATH. + if errors.Is(err, unix.ELOOP) { + newFile, err := openFileUnderRoot(metadata.Name, dirfd, unix.O_PATH|unix.O_NOFOLLOW, 0) + if err != nil { + return err + } + defer newFile.Close() + + return setFileAttrs(dirfd, newFile, mode, metadata, options, true) + } return err } defer newFile.Close() - return setFileAttrs(newFile, mode, metadata, options) + return setFileAttrs(dirfd, newFile, mode, metadata, options, false) } func safeSymlink(dirfd int, mode os.FileMode, metadata *internal.FileMetadata, options *archive.TarOptions) error { destDir, destBase := filepath.Dir(metadata.Name), filepath.Base(metadata.Name) destDirFd := dirfd if destDir != "." { - f, err := openFileUnderRoot(destDir, dirfd, unix.O_RDONLY, 0) + f, err := openOrCreateDirUnderRoot(destDir, dirfd, 0) if err != nil { return err } @@ -828,7 +1023,10 @@ func safeSymlink(dirfd int, mode os.FileMode, metadata *internal.FileMetadata, o destDirFd = int(f.Fd()) } - return unix.Symlinkat(metadata.Linkname, destDirFd, destBase) + if err := unix.Symlinkat(metadata.Linkname, destDirFd, destBase); err != nil { + return fmt.Errorf("create symlink %q pointing to %q: %w", metadata.Name, metadata.Linkname, err) + } + return nil } type whiteoutHandler struct { @@ -837,13 +1035,16 @@ type whiteoutHandler struct { } func (d whiteoutHandler) Setxattr(path, name string, value []byte) error { - file, err := openFileUnderRoot(path, d.Dirfd, unix.O_RDONLY, 0) + file, err := openOrCreateDirUnderRoot(path, d.Dirfd, 0) if err != nil { return err } defer file.Close() - return unix.Fsetxattr(int(file.Fd()), name, value, 0) + if err := unix.Fsetxattr(int(file.Fd()), name, value, 0); err != nil { + return fmt.Errorf("set xattr %s=%q for %q: %w", name, value, path, err) + } + return nil } func (d whiteoutHandler) Mknod(path string, mode uint32, dev int) error { @@ -852,7 +1053,7 @@ func (d whiteoutHandler) Mknod(path string, mode uint32, dev int) error { dirfd := d.Dirfd if dir != "" { - dir, err := openFileUnderRoot(dir, d.Dirfd, unix.O_RDONLY, 0) + dir, err := openOrCreateDirUnderRoot(dir, d.Dirfd, 0) if err != nil { return err } @@ -861,12 +1062,16 @@ func (d whiteoutHandler) Mknod(path string, mode uint32, dev int) error { dirfd = int(dir.Fd()) } - return unix.Mknodat(dirfd, base, mode, dev) + if err := unix.Mknodat(dirfd, base, mode, dev); err != nil { + return fmt.Errorf("mknod %q: %w", path, err) + } + + return nil } func checkChownErr(err error, name string, uid, gid int) error { if errors.Is(err, syscall.EINVAL) { - return errors.Wrapf(err, "potentially insufficient UIDs or GIDs available in user namespace (requested %d:%d for %s): Check /etc/subuid and /etc/subgid if configured locally", uid, gid, name) + return fmt.Errorf("potentially insufficient UIDs or GIDs available in user namespace (requested %d:%d for %s): Check /etc/subuid and /etc/subgid if configured locally: %w", uid, gid, name, err) } return err } @@ -961,7 +1166,7 @@ func (c *chunkedDiffer) ApplyDiff(dest string, options *archive.TarOptions) (gra dirfd, err := unix.Open(dest, unix.O_RDONLY|unix.O_PATH, 0) if err != nil { - return output, err + return output, fmt.Errorf("cannot open %q: %w", dest, err) } defer unix.Close(dirfd) @@ -1021,7 +1226,7 @@ func (c *chunkedDiffer) ApplyDiff(dest string, options *archive.TarOptions) (gra return err } defer file.Close() - if err := setFileAttrs(file, mode, &r, options); err != nil { + if err := setFileAttrs(dirfd, file, mode, &r, options, false); err != nil { return err } return nil @@ -1033,7 +1238,7 @@ func (c *chunkedDiffer) ApplyDiff(dest string, options *archive.TarOptions) (gra } case tar.TypeDir: - if err := safeMkdir(dirfd, mode, &r, options); err != nil { + if err := safeMkdir(dirfd, mode, r.Name, &r, options); err != nil { return output, err } continue @@ -1070,7 +1275,7 @@ func (c *chunkedDiffer) ApplyDiff(dest string, options *archive.TarOptions) (gra finalizeFile := func(dstFile *os.File) error { if dstFile != nil { defer dstFile.Close() - if err := setFileAttrs(dstFile, mode, &r, options); err != nil { + if err := setFileAttrs(dirfd, dstFile, mode, &r, options, false); err != nil { return err } } diff --git a/vendor/github.com/containers/storage/types/options.go b/vendor/github.com/containers/storage/types/options.go index 8a3858d9f..fe4274efd 100644 --- a/vendor/github.com/containers/storage/types/options.go +++ b/vendor/github.com/containers/storage/types/options.go @@ -42,6 +42,10 @@ func init() { defaultStoreOptions.GraphDriverName = "" if _, err := os.Stat(defaultOverrideConfigFile); err == nil { + // The DefaultConfigFile(rootless) function returns the path + // of the used storage.conf file, by returning defaultConfigFile + // If override exists containers/storage uses it by default. + defaultConfigFile = defaultOverrideConfigFile ReloadConfigurationFileIfNeeded(defaultOverrideConfigFile, &defaultStoreOptions) } else { if !os.IsNotExist(err) { diff --git a/vendor/modules.txt b/vendor/modules.txt index 66fa7f194..04f15620c 100644 --- a/vendor/modules.txt +++ b/vendor/modules.txt @@ -219,7 +219,7 @@ github.com/containers/psgo/internal/dev github.com/containers/psgo/internal/host github.com/containers/psgo/internal/proc github.com/containers/psgo/internal/process -# github.com/containers/storage v1.37.1-0.20211122214631-59ba58582415 +# github.com/containers/storage v1.37.1-0.20211130181259-1a158c89a518 ## explicit github.com/containers/storage github.com/containers/storage/drivers |