diff options
Diffstat (limited to 'vendor/github.com/containerd/continuity/fs')
20 files changed, 0 insertions, 1876 deletions
diff --git a/vendor/github.com/containerd/continuity/fs/copy.go b/vendor/github.com/containerd/continuity/fs/copy.go deleted file mode 100644 index 818bba2cd..000000000 --- a/vendor/github.com/containerd/continuity/fs/copy.go +++ /dev/null @@ -1,176 +0,0 @@ -/* - Copyright The containerd Authors. - - 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. -*/ - -package fs - -import ( - "io/ioutil" - "os" - "path/filepath" - "sync" - - "github.com/pkg/errors" -) - -var bufferPool = &sync.Pool{ - New: func() interface{} { - buffer := make([]byte, 32*1024) - return &buffer - }, -} - -// XAttrErrorHandlers transform a non-nil xattr error. -// Return nil to ignore an error. -// xattrKey can be empty for listxattr operation. -type XAttrErrorHandler func(dst, src, xattrKey string, err error) error - -type copyDirOpts struct { - xeh XAttrErrorHandler -} - -type CopyDirOpt func(*copyDirOpts) error - -// WithXAttrErrorHandler allows specifying XAttrErrorHandler -// If nil XAttrErrorHandler is specified (default), CopyDir stops -// on a non-nil xattr error. -func WithXAttrErrorHandler(xeh XAttrErrorHandler) CopyDirOpt { - return func(o *copyDirOpts) error { - o.xeh = xeh - return nil - } -} - -// WithAllowXAttrErrors allows ignoring xattr errors. -func WithAllowXAttrErrors() CopyDirOpt { - xeh := func(dst, src, xattrKey string, err error) error { - return nil - } - return WithXAttrErrorHandler(xeh) -} - -// CopyDir copies the directory from src to dst. -// Most efficient copy of files is attempted. -func CopyDir(dst, src string, opts ...CopyDirOpt) error { - var o copyDirOpts - for _, opt := range opts { - if err := opt(&o); err != nil { - return err - } - } - inodes := map[uint64]string{} - return copyDirectory(dst, src, inodes, &o) -} - -func copyDirectory(dst, src string, inodes map[uint64]string, o *copyDirOpts) error { - stat, err := os.Stat(src) - if err != nil { - return errors.Wrapf(err, "failed to stat %s", src) - } - if !stat.IsDir() { - return errors.Errorf("source %s is not directory", src) - } - - if st, err := os.Stat(dst); err != nil { - if err := os.Mkdir(dst, stat.Mode()); err != nil { - return errors.Wrapf(err, "failed to mkdir %s", dst) - } - } else if !st.IsDir() { - return errors.Errorf("cannot copy to non-directory: %s", dst) - } else { - if err := os.Chmod(dst, stat.Mode()); err != nil { - return errors.Wrapf(err, "failed to chmod on %s", dst) - } - } - - fis, err := ioutil.ReadDir(src) - if err != nil { - return errors.Wrapf(err, "failed to read %s", src) - } - - if err := copyFileInfo(stat, dst); err != nil { - return errors.Wrapf(err, "failed to copy file info for %s", dst) - } - - if err := copyXAttrs(dst, src, o.xeh); err != nil { - return errors.Wrap(err, "failed to copy xattrs") - } - - for _, fi := range fis { - source := filepath.Join(src, fi.Name()) - target := filepath.Join(dst, fi.Name()) - - switch { - case fi.IsDir(): - if err := copyDirectory(target, source, inodes, o); err != nil { - return err - } - continue - case (fi.Mode() & os.ModeType) == 0: - link, err := getLinkSource(target, fi, inodes) - if err != nil { - return errors.Wrap(err, "failed to get hardlink") - } - if link != "" { - if err := os.Link(link, target); err != nil { - return errors.Wrap(err, "failed to create hard link") - } - } else if err := CopyFile(target, source); err != nil { - return errors.Wrap(err, "failed to copy files") - } - case (fi.Mode() & os.ModeSymlink) == os.ModeSymlink: - link, err := os.Readlink(source) - if err != nil { - return errors.Wrapf(err, "failed to read link: %s", source) - } - if err := os.Symlink(link, target); err != nil { - return errors.Wrapf(err, "failed to create symlink: %s", target) - } - case (fi.Mode() & os.ModeDevice) == os.ModeDevice: - if err := copyDevice(target, fi); err != nil { - return errors.Wrapf(err, "failed to create device") - } - default: - // TODO: Support pipes and sockets - return errors.Wrapf(err, "unsupported mode %s", fi.Mode()) - } - if err := copyFileInfo(fi, target); err != nil { - return errors.Wrap(err, "failed to copy file info") - } - - if err := copyXAttrs(target, source, o.xeh); err != nil { - return errors.Wrap(err, "failed to copy xattrs") - } - } - - return nil -} - -// CopyFile copies the source file to the target. -// The most efficient means of copying is used for the platform. -func CopyFile(target, source string) error { - src, err := os.Open(source) - if err != nil { - return errors.Wrapf(err, "failed to open source %s", source) - } - defer src.Close() - tgt, err := os.Create(target) - if err != nil { - return errors.Wrapf(err, "failed to open target %s", target) - } - defer tgt.Close() - - return copyFileContent(tgt, src) -} diff --git a/vendor/github.com/containerd/continuity/fs/copy_darwinopenbsdsolaris.go b/vendor/github.com/containerd/continuity/fs/copy_darwinopenbsdsolaris.go deleted file mode 100644 index 92ccacf9a..000000000 --- a/vendor/github.com/containerd/continuity/fs/copy_darwinopenbsdsolaris.go +++ /dev/null @@ -1,40 +0,0 @@ -// +build darwin openbsd solaris - -/* - Copyright The containerd Authors. - - 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. -*/ - -package fs - -import ( - "os" - "syscall" - - "github.com/pkg/errors" - "golang.org/x/sys/unix" -) - -func copyDevice(dst string, fi os.FileInfo) error { - st, ok := fi.Sys().(*syscall.Stat_t) - if !ok { - return errors.New("unsupported stat type") - } - return unix.Mknod(dst, uint32(fi.Mode()), int(st.Rdev)) -} - -func utimesNano(name string, atime, mtime syscall.Timespec) error { - timespec := []syscall.Timespec{atime, mtime} - return syscall.UtimesNano(name, timespec) -} diff --git a/vendor/github.com/containerd/continuity/fs/copy_freebsd.go b/vendor/github.com/containerd/continuity/fs/copy_freebsd.go deleted file mode 100644 index 4b116c95e..000000000 --- a/vendor/github.com/containerd/continuity/fs/copy_freebsd.go +++ /dev/null @@ -1,42 +0,0 @@ -// +build freebsd - -/* - Copyright The containerd Authors. - - 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. -*/ - -package fs - -import ( - "os" - "syscall" - - "github.com/pkg/errors" - "golang.org/x/sys/unix" -) - -func copyDevice(dst string, fi os.FileInfo) error { - st, ok := fi.Sys().(*syscall.Stat_t) - if !ok { - return errors.New("unsupported stat type") - } - return unix.Mknod(dst, uint32(fi.Mode()), st.Rdev) -} - -func utimesNano(name string, atime, mtime syscall.Timespec) error { - at := unix.NsecToTimespec(atime.Nano()) - mt := unix.NsecToTimespec(mtime.Nano()) - utimes := [2]unix.Timespec{at, mt} - return unix.UtimesNanoAt(unix.AT_FDCWD, name, utimes[0:], unix.AT_SYMLINK_NOFOLLOW) -} diff --git a/vendor/github.com/containerd/continuity/fs/copy_linux.go b/vendor/github.com/containerd/continuity/fs/copy_linux.go deleted file mode 100644 index 72bae7d4e..000000000 --- a/vendor/github.com/containerd/continuity/fs/copy_linux.go +++ /dev/null @@ -1,147 +0,0 @@ -/* - Copyright The containerd Authors. - - 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. -*/ - -package fs - -import ( - "io" - "os" - "syscall" - - "github.com/containerd/continuity/sysx" - "github.com/pkg/errors" - "golang.org/x/sys/unix" -) - -func copyFileInfo(fi os.FileInfo, name string) error { - st := fi.Sys().(*syscall.Stat_t) - if err := os.Lchown(name, int(st.Uid), int(st.Gid)); err != nil { - if os.IsPermission(err) { - // Normally if uid/gid are the same this would be a no-op, but some - // filesystems may still return EPERM... for instance NFS does this. - // In such a case, this is not an error. - if dstStat, err2 := os.Lstat(name); err2 == nil { - st2 := dstStat.Sys().(*syscall.Stat_t) - if st.Uid == st2.Uid && st.Gid == st2.Gid { - err = nil - } - } - } - if err != nil { - return errors.Wrapf(err, "failed to chown %s", name) - } - } - - if (fi.Mode() & os.ModeSymlink) != os.ModeSymlink { - if err := os.Chmod(name, fi.Mode()); err != nil { - return errors.Wrapf(err, "failed to chmod %s", name) - } - } - - timespec := []unix.Timespec{ - unix.NsecToTimespec(syscall.TimespecToNsec(StatAtime(st))), - unix.NsecToTimespec(syscall.TimespecToNsec(StatMtime(st))), - } - if err := unix.UtimesNanoAt(unix.AT_FDCWD, name, timespec, unix.AT_SYMLINK_NOFOLLOW); err != nil { - return errors.Wrapf(err, "failed to utime %s", name) - } - - return nil -} - -const maxSSizeT = int64(^uint(0) >> 1) - -func copyFileContent(dst, src *os.File) error { - st, err := src.Stat() - if err != nil { - return errors.Wrap(err, "unable to stat source") - } - - size := st.Size() - first := true - srcFd := int(src.Fd()) - dstFd := int(dst.Fd()) - - for size > 0 { - // Ensure that we are never trying to copy more than SSIZE_MAX at a - // time and at the same time avoids overflows when the file is larger - // than 4GB on 32-bit systems. - var copySize int - if size > maxSSizeT { - copySize = int(maxSSizeT) - } else { - copySize = int(size) - } - n, err := unix.CopyFileRange(srcFd, nil, dstFd, nil, copySize, 0) - if err != nil { - if (err != unix.ENOSYS && err != unix.EXDEV) || !first { - return errors.Wrap(err, "copy file range failed") - } - - buf := bufferPool.Get().(*[]byte) - _, err = io.CopyBuffer(dst, src, *buf) - bufferPool.Put(buf) - return errors.Wrap(err, "userspace copy failed") - } - - first = false - size -= int64(n) - } - - return nil -} - -func copyXAttrs(dst, src string, xeh XAttrErrorHandler) error { - xattrKeys, err := sysx.LListxattr(src) - if err != nil { - e := errors.Wrapf(err, "failed to list xattrs on %s", src) - if xeh != nil { - e = xeh(dst, src, "", e) - } - return e - } - for _, xattr := range xattrKeys { - data, err := sysx.LGetxattr(src, xattr) - if err != nil { - e := errors.Wrapf(err, "failed to get xattr %q on %s", xattr, src) - if xeh != nil { - if e = xeh(dst, src, xattr, e); e == nil { - continue - } - } - return e - } - if err := sysx.LSetxattr(dst, xattr, data, 0); err != nil { - e := errors.Wrapf(err, "failed to set xattr %q on %s", xattr, dst) - if xeh != nil { - if e = xeh(dst, src, xattr, e); e == nil { - continue - } - } - return e - } - } - - return nil -} - -func copyDevice(dst string, fi os.FileInfo) error { - st, ok := fi.Sys().(*syscall.Stat_t) - if !ok { - return errors.New("unsupported stat type") - } - return unix.Mknod(dst, uint32(fi.Mode()), int(st.Rdev)) -} diff --git a/vendor/github.com/containerd/continuity/fs/copy_unix.go b/vendor/github.com/containerd/continuity/fs/copy_unix.go deleted file mode 100644 index dfd857aaa..000000000 --- a/vendor/github.com/containerd/continuity/fs/copy_unix.go +++ /dev/null @@ -1,102 +0,0 @@ -// +build darwin freebsd openbsd solaris - -/* - Copyright The containerd Authors. - - 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. -*/ - -package fs - -import ( - "io" - "os" - "syscall" - - "github.com/containerd/continuity/sysx" - "github.com/pkg/errors" -) - -func copyFileInfo(fi os.FileInfo, name string) error { - st := fi.Sys().(*syscall.Stat_t) - if err := os.Lchown(name, int(st.Uid), int(st.Gid)); err != nil { - if os.IsPermission(err) { - // Normally if uid/gid are the same this would be a no-op, but some - // filesystems may still return EPERM... for instance NFS does this. - // In such a case, this is not an error. - if dstStat, err2 := os.Lstat(name); err2 == nil { - st2 := dstStat.Sys().(*syscall.Stat_t) - if st.Uid == st2.Uid && st.Gid == st2.Gid { - err = nil - } - } - } - if err != nil { - return errors.Wrapf(err, "failed to chown %s", name) - } - } - - if (fi.Mode() & os.ModeSymlink) != os.ModeSymlink { - if err := os.Chmod(name, fi.Mode()); err != nil { - return errors.Wrapf(err, "failed to chmod %s", name) - } - } - - if err := utimesNano(name, StatAtime(st), StatMtime(st)); err != nil { - return errors.Wrapf(err, "failed to utime %s", name) - } - - return nil -} - -func copyFileContent(dst, src *os.File) error { - buf := bufferPool.Get().(*[]byte) - _, err := io.CopyBuffer(dst, src, *buf) - bufferPool.Put(buf) - - return err -} - -func copyXAttrs(dst, src string, xeh XAttrErrorHandler) error { - xattrKeys, err := sysx.LListxattr(src) - if err != nil { - e := errors.Wrapf(err, "failed to list xattrs on %s", src) - if xeh != nil { - e = xeh(dst, src, "", e) - } - return e - } - for _, xattr := range xattrKeys { - data, err := sysx.LGetxattr(src, xattr) - if err != nil { - e := errors.Wrapf(err, "failed to get xattr %q on %s", xattr, src) - if xeh != nil { - if e = xeh(dst, src, xattr, e); e == nil { - continue - } - } - return e - } - if err := sysx.LSetxattr(dst, xattr, data, 0); err != nil { - e := errors.Wrapf(err, "failed to set xattr %q on %s", xattr, dst) - if xeh != nil { - if e = xeh(dst, src, xattr, e); e == nil { - continue - } - } - return e - } - } - - return nil -} diff --git a/vendor/github.com/containerd/continuity/fs/copy_windows.go b/vendor/github.com/containerd/continuity/fs/copy_windows.go deleted file mode 100644 index 27c7d7dbb..000000000 --- a/vendor/github.com/containerd/continuity/fs/copy_windows.go +++ /dev/null @@ -1,49 +0,0 @@ -/* - Copyright The containerd Authors. - - 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. -*/ - -package fs - -import ( - "io" - "os" - - "github.com/pkg/errors" -) - -func copyFileInfo(fi os.FileInfo, name string) error { - if err := os.Chmod(name, fi.Mode()); err != nil { - return errors.Wrapf(err, "failed to chmod %s", name) - } - - // TODO: copy windows specific metadata - - return nil -} - -func copyFileContent(dst, src *os.File) error { - buf := bufferPool.Get().(*[]byte) - _, err := io.CopyBuffer(dst, src, *buf) - bufferPool.Put(buf) - return err -} - -func copyXAttrs(dst, src string, xeh XAttrErrorHandler) error { - return nil -} - -func copyDevice(dst string, fi os.FileInfo) error { - return errors.New("device copy not supported") -} diff --git a/vendor/github.com/containerd/continuity/fs/diff.go b/vendor/github.com/containerd/continuity/fs/diff.go deleted file mode 100644 index e64f9e73d..000000000 --- a/vendor/github.com/containerd/continuity/fs/diff.go +++ /dev/null @@ -1,326 +0,0 @@ -/* - Copyright The containerd Authors. - - 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. -*/ - -package fs - -import ( - "context" - "os" - "path/filepath" - "strings" - - "golang.org/x/sync/errgroup" - - "github.com/sirupsen/logrus" -) - -// ChangeKind is the type of modification that -// a change is making. -type ChangeKind int - -const ( - // ChangeKindUnmodified represents an unmodified - // file - ChangeKindUnmodified = iota - - // ChangeKindAdd represents an addition of - // a file - ChangeKindAdd - - // ChangeKindModify represents a change to - // an existing file - ChangeKindModify - - // ChangeKindDelete represents a delete of - // a file - ChangeKindDelete -) - -func (k ChangeKind) String() string { - switch k { - case ChangeKindUnmodified: - return "unmodified" - case ChangeKindAdd: - return "add" - case ChangeKindModify: - return "modify" - case ChangeKindDelete: - return "delete" - default: - return "" - } -} - -// Change represents single change between a diff and its parent. -type Change struct { - Kind ChangeKind - Path string -} - -// ChangeFunc is the type of function called for each change -// computed during a directory changes calculation. -type ChangeFunc func(ChangeKind, string, os.FileInfo, error) error - -// Changes computes changes between two directories calling the -// given change function for each computed change. The first -// directory is intended to the base directory and second -// directory the changed directory. -// -// The change callback is called by the order of path names and -// should be appliable in that order. -// Due to this apply ordering, the following is true -// - Removed directory trees only create a single change for the root -// directory removed. Remaining changes are implied. -// - A directory which is modified to become a file will not have -// delete entries for sub-path items, their removal is implied -// by the removal of the parent directory. -// -// Opaque directories will not be treated specially and each file -// removed from the base directory will show up as a removal. -// -// File content comparisons will be done on files which have timestamps -// which may have been truncated. If either of the files being compared -// has a zero value nanosecond value, each byte will be compared for -// differences. If 2 files have the same seconds value but different -// nanosecond values where one of those values is zero, the files will -// be considered unchanged if the content is the same. This behavior -// is to account for timestamp truncation during archiving. -func Changes(ctx context.Context, a, b string, changeFn ChangeFunc) error { - if a == "" { - logrus.Debugf("Using single walk diff for %s", b) - return addDirChanges(ctx, changeFn, b) - } else if diffOptions := detectDirDiff(b, a); diffOptions != nil { - logrus.Debugf("Using single walk diff for %s from %s", diffOptions.diffDir, a) - return diffDirChanges(ctx, changeFn, a, diffOptions) - } - - logrus.Debugf("Using double walk diff for %s from %s", b, a) - return doubleWalkDiff(ctx, changeFn, a, b) -} - -func addDirChanges(ctx context.Context, changeFn ChangeFunc, root string) error { - return filepath.Walk(root, func(path string, f os.FileInfo, err error) error { - if err != nil { - return err - } - - // Rebase path - path, err = filepath.Rel(root, path) - if err != nil { - return err - } - - path = filepath.Join(string(os.PathSeparator), path) - - // Skip root - if path == string(os.PathSeparator) { - return nil - } - - return changeFn(ChangeKindAdd, path, f, nil) - }) -} - -// diffDirOptions is used when the diff can be directly calculated from -// a diff directory to its base, without walking both trees. -type diffDirOptions struct { - diffDir string - skipChange func(string) (bool, error) - deleteChange func(string, string, os.FileInfo) (string, error) -} - -// diffDirChanges walks the diff directory and compares changes against the base. -func diffDirChanges(ctx context.Context, changeFn ChangeFunc, base string, o *diffDirOptions) error { - changedDirs := make(map[string]struct{}) - return filepath.Walk(o.diffDir, func(path string, f os.FileInfo, err error) error { - if err != nil { - return err - } - - // Rebase path - path, err = filepath.Rel(o.diffDir, path) - if err != nil { - return err - } - - path = filepath.Join(string(os.PathSeparator), path) - - // Skip root - if path == string(os.PathSeparator) { - return nil - } - - // TODO: handle opaqueness, start new double walker at this - // location to get deletes, and skip tree in single walker - - if o.skipChange != nil { - if skip, err := o.skipChange(path); skip { - return err - } - } - - var kind ChangeKind - - deletedFile, err := o.deleteChange(o.diffDir, path, f) - if err != nil { - return err - } - - // Find out what kind of modification happened - if deletedFile != "" { - path = deletedFile - kind = ChangeKindDelete - f = nil - } else { - // Otherwise, the file was added - kind = ChangeKindAdd - - // ...Unless it already existed in a base, in which case, it's a modification - stat, err := os.Stat(filepath.Join(base, path)) - if err != nil && !os.IsNotExist(err) { - return err - } - if err == nil { - // The file existed in the base, so that's a modification - - // However, if it's a directory, maybe it wasn't actually modified. - // If you modify /foo/bar/baz, then /foo will be part of the changed files only because it's the parent of bar - if stat.IsDir() && f.IsDir() { - if f.Size() == stat.Size() && f.Mode() == stat.Mode() && sameFsTime(f.ModTime(), stat.ModTime()) { - // Both directories are the same, don't record the change - return nil - } - } - kind = ChangeKindModify - } - } - - // If /foo/bar/file.txt is modified, then /foo/bar must be part of the changed files. - // This block is here to ensure the change is recorded even if the - // modify time, mode and size of the parent directory in the rw and ro layers are all equal. - // Check https://github.com/docker/docker/pull/13590 for details. - if f.IsDir() { - changedDirs[path] = struct{}{} - } - if kind == ChangeKindAdd || kind == ChangeKindDelete { - parent := filepath.Dir(path) - if _, ok := changedDirs[parent]; !ok && parent != "/" { - pi, err := os.Stat(filepath.Join(o.diffDir, parent)) - if err := changeFn(ChangeKindModify, parent, pi, err); err != nil { - return err - } - changedDirs[parent] = struct{}{} - } - } - - return changeFn(kind, path, f, nil) - }) -} - -// doubleWalkDiff walks both directories to create a diff -func doubleWalkDiff(ctx context.Context, changeFn ChangeFunc, a, b string) (err error) { - g, ctx := errgroup.WithContext(ctx) - - var ( - c1 = make(chan *currentPath) - c2 = make(chan *currentPath) - - f1, f2 *currentPath - rmdir string - ) - g.Go(func() error { - defer close(c1) - return pathWalk(ctx, a, c1) - }) - g.Go(func() error { - defer close(c2) - return pathWalk(ctx, b, c2) - }) - g.Go(func() error { - for c1 != nil || c2 != nil { - if f1 == nil && c1 != nil { - f1, err = nextPath(ctx, c1) - if err != nil { - return err - } - if f1 == nil { - c1 = nil - } - } - - if f2 == nil && c2 != nil { - f2, err = nextPath(ctx, c2) - if err != nil { - return err - } - if f2 == nil { - c2 = nil - } - } - if f1 == nil && f2 == nil { - continue - } - - var f os.FileInfo - k, p := pathChange(f1, f2) - switch k { - case ChangeKindAdd: - if rmdir != "" { - rmdir = "" - } - f = f2.f - f2 = nil - case ChangeKindDelete: - // Check if this file is already removed by being - // under of a removed directory - if rmdir != "" && strings.HasPrefix(f1.path, rmdir) { - f1 = nil - continue - } else if f1.f.IsDir() { - rmdir = f1.path + string(os.PathSeparator) - } else if rmdir != "" { - rmdir = "" - } - f1 = nil - case ChangeKindModify: - same, err := sameFile(f1, f2) - if err != nil { - return err - } - if f1.f.IsDir() && !f2.f.IsDir() { - rmdir = f1.path + string(os.PathSeparator) - } else if rmdir != "" { - rmdir = "" - } - f = f2.f - f1 = nil - f2 = nil - if same { - if !isLinked(f) { - continue - } - k = ChangeKindUnmodified - } - } - if err := changeFn(k, p, f, nil); err != nil { - return err - } - } - return nil - }) - - return g.Wait() -} diff --git a/vendor/github.com/containerd/continuity/fs/diff_unix.go b/vendor/github.com/containerd/continuity/fs/diff_unix.go deleted file mode 100644 index 7913af27d..000000000 --- a/vendor/github.com/containerd/continuity/fs/diff_unix.go +++ /dev/null @@ -1,74 +0,0 @@ -// +build !windows - -/* - Copyright The containerd Authors. - - 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. -*/ - -package fs - -import ( - "bytes" - "os" - "syscall" - - "github.com/containerd/continuity/sysx" - "github.com/pkg/errors" -) - -// detectDirDiff returns diff dir options if a directory could -// be found in the mount info for upper which is the direct -// diff with the provided lower directory -func detectDirDiff(upper, lower string) *diffDirOptions { - // TODO: get mount options for upper - // TODO: detect AUFS - // TODO: detect overlay - return nil -} - -// compareSysStat returns whether the stats are equivalent, -// whether the files are considered the same file, and -// an error -func compareSysStat(s1, s2 interface{}) (bool, error) { - ls1, ok := s1.(*syscall.Stat_t) - if !ok { - return false, nil - } - ls2, ok := s2.(*syscall.Stat_t) - if !ok { - return false, nil - } - - return ls1.Mode == ls2.Mode && ls1.Uid == ls2.Uid && ls1.Gid == ls2.Gid && ls1.Rdev == ls2.Rdev, nil -} - -func compareCapabilities(p1, p2 string) (bool, error) { - c1, err := sysx.LGetxattr(p1, "security.capability") - if err != nil && err != sysx.ENODATA { - return false, errors.Wrapf(err, "failed to get xattr for %s", p1) - } - c2, err := sysx.LGetxattr(p2, "security.capability") - if err != nil && err != sysx.ENODATA { - return false, errors.Wrapf(err, "failed to get xattr for %s", p2) - } - return bytes.Equal(c1, c2), nil -} - -func isLinked(f os.FileInfo) bool { - s, ok := f.Sys().(*syscall.Stat_t) - if !ok { - return false - } - return !f.IsDir() && s.Nlink > 1 -} diff --git a/vendor/github.com/containerd/continuity/fs/diff_windows.go b/vendor/github.com/containerd/continuity/fs/diff_windows.go deleted file mode 100644 index 4bfa72d3a..000000000 --- a/vendor/github.com/containerd/continuity/fs/diff_windows.go +++ /dev/null @@ -1,48 +0,0 @@ -/* - Copyright The containerd Authors. - - 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. -*/ - -package fs - -import ( - "os" - - "golang.org/x/sys/windows" -) - -func detectDirDiff(upper, lower string) *diffDirOptions { - return nil -} - -func compareSysStat(s1, s2 interface{}) (bool, error) { - f1, ok := s1.(windows.Win32FileAttributeData) - if !ok { - return false, nil - } - f2, ok := s2.(windows.Win32FileAttributeData) - if !ok { - return false, nil - } - return f1.FileAttributes == f2.FileAttributes, nil -} - -func compareCapabilities(p1, p2 string) (bool, error) { - // TODO: Use windows equivalent - return true, nil -} - -func isLinked(os.FileInfo) bool { - return false -} diff --git a/vendor/github.com/containerd/continuity/fs/dtype_linux.go b/vendor/github.com/containerd/continuity/fs/dtype_linux.go deleted file mode 100644 index 10510d8de..000000000 --- a/vendor/github.com/containerd/continuity/fs/dtype_linux.go +++ /dev/null @@ -1,103 +0,0 @@ -// +build linux - -/* - Copyright The containerd Authors. - - 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. -*/ - -package fs - -import ( - "fmt" - "io/ioutil" - "os" - "syscall" - "unsafe" -) - -func locateDummyIfEmpty(path string) (string, error) { - children, err := ioutil.ReadDir(path) - if err != nil { - return "", err - } - if len(children) != 0 { - return "", nil - } - dummyFile, err := ioutil.TempFile(path, "fsutils-dummy") - if err != nil { - return "", err - } - name := dummyFile.Name() - err = dummyFile.Close() - return name, err -} - -// SupportsDType returns whether the filesystem mounted on path supports d_type -func SupportsDType(path string) (bool, error) { - // locate dummy so that we have at least one dirent - dummy, err := locateDummyIfEmpty(path) - if err != nil { - return false, err - } - if dummy != "" { - defer os.Remove(dummy) - } - - visited := 0 - supportsDType := true - fn := func(ent *syscall.Dirent) bool { - visited++ - if ent.Type == syscall.DT_UNKNOWN { - supportsDType = false - // stop iteration - return true - } - // continue iteration - return false - } - if err = iterateReadDir(path, fn); err != nil { - return false, err - } - if visited == 0 { - return false, fmt.Errorf("did not hit any dirent during iteration %s", path) - } - return supportsDType, nil -} - -func iterateReadDir(path string, fn func(*syscall.Dirent) bool) error { - d, err := os.Open(path) - if err != nil { - return err - } - defer d.Close() - fd := int(d.Fd()) - buf := make([]byte, 4096) - for { - nbytes, err := syscall.ReadDirent(fd, buf) - if err != nil { - return err - } - if nbytes == 0 { - break - } - for off := 0; off < nbytes; { - ent := (*syscall.Dirent)(unsafe.Pointer(&buf[off])) - if stop := fn(ent); stop { - return nil - } - off += int(ent.Reclen) - } - } - return nil -} diff --git a/vendor/github.com/containerd/continuity/fs/du.go b/vendor/github.com/containerd/continuity/fs/du.go deleted file mode 100644 index fccc985dc..000000000 --- a/vendor/github.com/containerd/continuity/fs/du.go +++ /dev/null @@ -1,38 +0,0 @@ -/* - Copyright The containerd Authors. - - 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. -*/ - -package fs - -import "context" - -// Usage of disk information -type Usage struct { - Inodes int64 - Size int64 -} - -// DiskUsage counts the number of inodes and disk usage for the resources under -// path. -func DiskUsage(ctx context.Context, roots ...string) (Usage, error) { - return diskUsage(ctx, roots...) -} - -// DiffUsage counts the numbers of inodes and disk usage in the -// diff between the 2 directories. The first path is intended -// as the base directory and the second as the changed directory. -func DiffUsage(ctx context.Context, a, b string) (Usage, error) { - return diffUsage(ctx, a, b) -} diff --git a/vendor/github.com/containerd/continuity/fs/du_unix.go b/vendor/github.com/containerd/continuity/fs/du_unix.go deleted file mode 100644 index 9da43d1bc..000000000 --- a/vendor/github.com/containerd/continuity/fs/du_unix.go +++ /dev/null @@ -1,120 +0,0 @@ -// +build !windows - -/* - Copyright The containerd Authors. - - 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. -*/ - -package fs - -import ( - "context" - "os" - "path/filepath" - "syscall" -) - -// blocksUnitSize is the unit used by `st_blocks` in `stat` in bytes. -// See https://man7.org/linux/man-pages/man2/stat.2.html -// st_blocks -// This field indicates the number of blocks allocated to the -// file, in 512-byte units. (This may be smaller than -// st_size/512 when the file has holes.) -const blocksUnitSize = 512 - -type inode struct { - // TODO(stevvooe): Can probably reduce memory usage by not tracking - // device, but we can leave this right for now. - dev, ino uint64 -} - -func newInode(stat *syscall.Stat_t) inode { - return inode{ - // Dev is uint32 on darwin/bsd, uint64 on linux/solaris/freebsd - dev: uint64(stat.Dev), // nolint: unconvert - // Ino is uint32 on bsd, uint64 on darwin/linux/solaris/freebsd - ino: uint64(stat.Ino), // nolint: unconvert - } -} - -func diskUsage(ctx context.Context, roots ...string) (Usage, error) { - - var ( - size int64 - inodes = map[inode]struct{}{} // expensive! - ) - - for _, root := range roots { - if err := filepath.Walk(root, func(path string, fi os.FileInfo, err error) error { - if err != nil { - return err - } - - select { - case <-ctx.Done(): - return ctx.Err() - default: - } - - stat := fi.Sys().(*syscall.Stat_t) - inoKey := newInode(stat) - if _, ok := inodes[inoKey]; !ok { - inodes[inoKey] = struct{}{} - size += stat.Blocks * blocksUnitSize - } - - return nil - }); err != nil { - return Usage{}, err - } - } - - return Usage{ - Inodes: int64(len(inodes)), - Size: size, - }, nil -} - -func diffUsage(ctx context.Context, a, b string) (Usage, error) { - var ( - size int64 - inodes = map[inode]struct{}{} // expensive! - ) - - if err := Changes(ctx, a, b, func(kind ChangeKind, _ string, fi os.FileInfo, err error) error { - if err != nil { - return err - } - - if kind == ChangeKindAdd || kind == ChangeKindModify { - stat := fi.Sys().(*syscall.Stat_t) - inoKey := newInode(stat) - if _, ok := inodes[inoKey]; !ok { - inodes[inoKey] = struct{}{} - size += stat.Blocks * blocksUnitSize - } - - return nil - - } - return nil - }); err != nil { - return Usage{}, err - } - - return Usage{ - Inodes: int64(len(inodes)), - Size: size, - }, nil -} diff --git a/vendor/github.com/containerd/continuity/fs/du_windows.go b/vendor/github.com/containerd/continuity/fs/du_windows.go deleted file mode 100644 index 8f25ec59c..000000000 --- a/vendor/github.com/containerd/continuity/fs/du_windows.go +++ /dev/null @@ -1,82 +0,0 @@ -// +build windows - -/* - Copyright The containerd Authors. - - 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. -*/ - -package fs - -import ( - "context" - "os" - "path/filepath" -) - -func diskUsage(ctx context.Context, roots ...string) (Usage, error) { - var ( - size int64 - ) - - // TODO(stevvooe): Support inodes (or equivalent) for windows. - - for _, root := range roots { - if err := filepath.Walk(root, func(path string, fi os.FileInfo, err error) error { - if err != nil { - return err - } - - select { - case <-ctx.Done(): - return ctx.Err() - default: - } - - size += fi.Size() - return nil - }); err != nil { - return Usage{}, err - } - } - - return Usage{ - Size: size, - }, nil -} - -func diffUsage(ctx context.Context, a, b string) (Usage, error) { - var ( - size int64 - ) - - if err := Changes(ctx, a, b, func(kind ChangeKind, _ string, fi os.FileInfo, err error) error { - if err != nil { - return err - } - - if kind == ChangeKindAdd || kind == ChangeKindModify { - size += fi.Size() - - return nil - - } - return nil - }); err != nil { - return Usage{}, err - } - - return Usage{ - Size: size, - }, nil -} diff --git a/vendor/github.com/containerd/continuity/fs/hardlink.go b/vendor/github.com/containerd/continuity/fs/hardlink.go deleted file mode 100644 index 762aa45e6..000000000 --- a/vendor/github.com/containerd/continuity/fs/hardlink.go +++ /dev/null @@ -1,43 +0,0 @@ -/* - Copyright The containerd Authors. - - 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. -*/ - -package fs - -import "os" - -// GetLinkInfo returns an identifier representing the node a hardlink is pointing -// to. If the file is not hard linked then 0 will be returned. -func GetLinkInfo(fi os.FileInfo) (uint64, bool) { - return getLinkInfo(fi) -} - -// getLinkSource returns a path for the given name and -// file info to its link source in the provided inode -// map. If the given file name is not in the map and -// has other links, it is added to the inode map -// to be a source for other link locations. -func getLinkSource(name string, fi os.FileInfo, inodes map[uint64]string) (string, error) { - inode, isHardlink := getLinkInfo(fi) - if !isHardlink { - return "", nil - } - - path, ok := inodes[inode] - if !ok { - inodes[inode] = name - } - return path, nil -} diff --git a/vendor/github.com/containerd/continuity/fs/hardlink_unix.go b/vendor/github.com/containerd/continuity/fs/hardlink_unix.go deleted file mode 100644 index f95f0904c..000000000 --- a/vendor/github.com/containerd/continuity/fs/hardlink_unix.go +++ /dev/null @@ -1,34 +0,0 @@ -// +build !windows - -/* - Copyright The containerd Authors. - - 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. -*/ - -package fs - -import ( - "os" - "syscall" -) - -func getLinkInfo(fi os.FileInfo) (uint64, bool) { - s, ok := fi.Sys().(*syscall.Stat_t) - if !ok { - return 0, false - } - - // Ino is uint32 on bsd, uint64 on darwin/linux/solaris - return uint64(s.Ino), !fi.IsDir() && s.Nlink > 1 // nolint: unconvert -} diff --git a/vendor/github.com/containerd/continuity/fs/hardlink_windows.go b/vendor/github.com/containerd/continuity/fs/hardlink_windows.go deleted file mode 100644 index 748554714..000000000 --- a/vendor/github.com/containerd/continuity/fs/hardlink_windows.go +++ /dev/null @@ -1,23 +0,0 @@ -/* - Copyright The containerd Authors. - - 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. -*/ - -package fs - -import "os" - -func getLinkInfo(fi os.FileInfo) (uint64, bool) { - return 0, false -} diff --git a/vendor/github.com/containerd/continuity/fs/path.go b/vendor/github.com/containerd/continuity/fs/path.go deleted file mode 100644 index c26be7989..000000000 --- a/vendor/github.com/containerd/continuity/fs/path.go +++ /dev/null @@ -1,311 +0,0 @@ -/* - Copyright The containerd Authors. - - 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. -*/ - -package fs - -import ( - "bytes" - "context" - "io" - "os" - "path/filepath" - - "github.com/pkg/errors" -) - -var ( - errTooManyLinks = errors.New("too many links") -) - -type currentPath struct { - path string - f os.FileInfo - fullPath string -} - -func pathChange(lower, upper *currentPath) (ChangeKind, string) { - if lower == nil { - if upper == nil { - panic("cannot compare nil paths") - } - return ChangeKindAdd, upper.path - } - if upper == nil { - return ChangeKindDelete, lower.path - } - - switch i := directoryCompare(lower.path, upper.path); { - case i < 0: - // File in lower that is not in upper - return ChangeKindDelete, lower.path - case i > 0: - // File in upper that is not in lower - return ChangeKindAdd, upper.path - default: - return ChangeKindModify, upper.path - } -} - -func directoryCompare(a, b string) int { - l := len(a) - if len(b) < l { - l = len(b) - } - for i := 0; i < l; i++ { - c1, c2 := a[i], b[i] - if c1 == filepath.Separator { - c1 = byte(0) - } - if c2 == filepath.Separator { - c2 = byte(0) - } - if c1 < c2 { - return -1 - } - if c1 > c2 { - return +1 - } - } - if len(a) < len(b) { - return -1 - } - if len(a) > len(b) { - return +1 - } - return 0 -} - -func sameFile(f1, f2 *currentPath) (bool, error) { - if os.SameFile(f1.f, f2.f) { - return true, nil - } - - equalStat, err := compareSysStat(f1.f.Sys(), f2.f.Sys()) - if err != nil || !equalStat { - return equalStat, err - } - - if eq, err := compareCapabilities(f1.fullPath, f2.fullPath); err != nil || !eq { - return eq, err - } - - // If not a directory also check size, modtime, and content - if !f1.f.IsDir() { - if f1.f.Size() != f2.f.Size() { - return false, nil - } - t1 := f1.f.ModTime() - t2 := f2.f.ModTime() - - if t1.Unix() != t2.Unix() { - return false, nil - } - - // If the timestamp may have been truncated in both of the - // files, check content of file to determine difference - if t1.Nanosecond() == 0 && t2.Nanosecond() == 0 { - if (f1.f.Mode() & os.ModeSymlink) == os.ModeSymlink { - return compareSymlinkTarget(f1.fullPath, f2.fullPath) - } - if f1.f.Size() == 0 { // if file sizes are zero length, the files are the same by definition - return true, nil - } - return compareFileContent(f1.fullPath, f2.fullPath) - } else if t1.Nanosecond() != t2.Nanosecond() { - return false, nil - } - } - - return true, nil -} - -func compareSymlinkTarget(p1, p2 string) (bool, error) { - t1, err := os.Readlink(p1) - if err != nil { - return false, err - } - t2, err := os.Readlink(p2) - if err != nil { - return false, err - } - return t1 == t2, nil -} - -const compareChuckSize = 32 * 1024 - -// compareFileContent compares the content of 2 same sized files -// by comparing each byte. -func compareFileContent(p1, p2 string) (bool, error) { - f1, err := os.Open(p1) - if err != nil { - return false, err - } - defer f1.Close() - f2, err := os.Open(p2) - if err != nil { - return false, err - } - defer f2.Close() - - b1 := make([]byte, compareChuckSize) - b2 := make([]byte, compareChuckSize) - for { - n1, err1 := f1.Read(b1) - if err1 != nil && err1 != io.EOF { - return false, err1 - } - n2, err2 := f2.Read(b2) - if err2 != nil && err2 != io.EOF { - return false, err2 - } - if n1 != n2 || !bytes.Equal(b1[:n1], b2[:n2]) { - return false, nil - } - if err1 == io.EOF && err2 == io.EOF { - return true, nil - } - } -} - -func pathWalk(ctx context.Context, root string, pathC chan<- *currentPath) error { - return filepath.Walk(root, func(path string, f os.FileInfo, err error) error { - if err != nil { - return err - } - - // Rebase path - path, err = filepath.Rel(root, path) - if err != nil { - return err - } - - path = filepath.Join(string(os.PathSeparator), path) - - // Skip root - if path == string(os.PathSeparator) { - return nil - } - - p := ¤tPath{ - path: path, - f: f, - fullPath: filepath.Join(root, path), - } - - select { - case <-ctx.Done(): - return ctx.Err() - case pathC <- p: - return nil - } - }) -} - -func nextPath(ctx context.Context, pathC <-chan *currentPath) (*currentPath, error) { - select { - case <-ctx.Done(): - return nil, ctx.Err() - case p := <-pathC: - return p, nil - } -} - -// RootPath joins a path with a root, evaluating and bounding any -// symlink to the root directory. -func RootPath(root, path string) (string, error) { - if path == "" { - return root, nil - } - var linksWalked int // to protect against cycles - for { - i := linksWalked - newpath, err := walkLinks(root, path, &linksWalked) - if err != nil { - return "", err - } - path = newpath - if i == linksWalked { - newpath = filepath.Join("/", newpath) - if path == newpath { - return filepath.Join(root, newpath), nil - } - path = newpath - } - } -} - -func walkLink(root, path string, linksWalked *int) (newpath string, islink bool, err error) { - if *linksWalked > 255 { - return "", false, errTooManyLinks - } - - path = filepath.Join("/", path) - if path == "/" { - return path, false, nil - } - realPath := filepath.Join(root, path) - - fi, err := os.Lstat(realPath) - if err != nil { - // If path does not yet exist, treat as non-symlink - if os.IsNotExist(err) { - return path, false, nil - } - return "", false, err - } - if fi.Mode()&os.ModeSymlink == 0 { - return path, false, nil - } - newpath, err = os.Readlink(realPath) - if err != nil { - return "", false, err - } - *linksWalked++ - return newpath, true, nil -} - -func walkLinks(root, path string, linksWalked *int) (string, error) { - switch dir, file := filepath.Split(path); { - case dir == "": - newpath, _, err := walkLink(root, file, linksWalked) - return newpath, err - case file == "": - if os.IsPathSeparator(dir[len(dir)-1]) { - if dir == "/" { - return dir, nil - } - return walkLinks(root, dir[:len(dir)-1], linksWalked) - } - newpath, _, err := walkLink(root, dir, linksWalked) - return newpath, err - default: - newdir, err := walkLinks(root, dir, linksWalked) - if err != nil { - return "", err - } - newpath, islink, err := walkLink(root, filepath.Join(newdir, file), linksWalked) - if err != nil { - return "", err - } - if !islink { - return newpath, nil - } - if filepath.IsAbs(newpath) { - return newpath, nil - } - return filepath.Join(newdir, newpath), nil - } -} diff --git a/vendor/github.com/containerd/continuity/fs/stat_darwinfreebsd.go b/vendor/github.com/containerd/continuity/fs/stat_darwinfreebsd.go deleted file mode 100644 index cb7400a33..000000000 --- a/vendor/github.com/containerd/continuity/fs/stat_darwinfreebsd.go +++ /dev/null @@ -1,44 +0,0 @@ -// +build darwin freebsd - -/* - Copyright The containerd Authors. - - 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. -*/ - -package fs - -import ( - "syscall" - "time" -) - -// StatAtime returns the access time from a stat struct -func StatAtime(st *syscall.Stat_t) syscall.Timespec { - return st.Atimespec -} - -// StatCtime returns the created time from a stat struct -func StatCtime(st *syscall.Stat_t) syscall.Timespec { - return st.Ctimespec -} - -// StatMtime returns the modified time from a stat struct -func StatMtime(st *syscall.Stat_t) syscall.Timespec { - return st.Mtimespec -} - -// StatATimeAsTime returns the access time as a time.Time -func StatATimeAsTime(st *syscall.Stat_t) time.Time { - return time.Unix(int64(st.Atimespec.Sec), int64(st.Atimespec.Nsec)) // nolint: unconvert -} diff --git a/vendor/github.com/containerd/continuity/fs/stat_linuxopenbsd.go b/vendor/github.com/containerd/continuity/fs/stat_linuxopenbsd.go deleted file mode 100644 index c68df6e58..000000000 --- a/vendor/github.com/containerd/continuity/fs/stat_linuxopenbsd.go +++ /dev/null @@ -1,45 +0,0 @@ -// +build linux openbsd - -/* - Copyright The containerd Authors. - - 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. -*/ - -package fs - -import ( - "syscall" - "time" -) - -// StatAtime returns the Atim -func StatAtime(st *syscall.Stat_t) syscall.Timespec { - return st.Atim -} - -// StatCtime returns the Ctim -func StatCtime(st *syscall.Stat_t) syscall.Timespec { - return st.Ctim -} - -// StatMtime returns the Mtim -func StatMtime(st *syscall.Stat_t) syscall.Timespec { - return st.Mtim -} - -// StatATimeAsTime returns st.Atim as a time.Time -func StatATimeAsTime(st *syscall.Stat_t) time.Time { - // The int64 conversions ensure the line compiles for 32-bit systems as well. - return time.Unix(int64(st.Atim.Sec), int64(st.Atim.Nsec)) // nolint: unconvert -} diff --git a/vendor/github.com/containerd/continuity/fs/time.go b/vendor/github.com/containerd/continuity/fs/time.go deleted file mode 100644 index cde456123..000000000 --- a/vendor/github.com/containerd/continuity/fs/time.go +++ /dev/null @@ -1,29 +0,0 @@ -/* - Copyright The containerd Authors. - - 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. -*/ - -package fs - -import "time" - -// Gnu tar and the go tar writer don't have sub-second mtime -// precision, which is problematic when we apply changes via tar -// files, we handle this by comparing for exact times, *or* same -// second count and either a or b having exactly 0 nanoseconds -func sameFsTime(a, b time.Time) bool { - return a == b || - (a.Unix() == b.Unix() && - (a.Nanosecond() == 0 || b.Nanosecond() == 0)) -} |