1 files changed, 0 insertions, 311 deletions
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 := &currentPath{
-			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
-	}
-}