72 lines
2.3 KiB
Go
72 lines
2.3 KiB
Go
|
// Copyright 2014 Docker authors. All rights reserved.
|
||
|
|
// Use of this source code is governed by a BSD-style
|
||
|
|
// license that can be found in the DOCKER-LICENSE file.
|
||
|
|
|
||
|
|
package archive
|
||
|
|
|
||
|
|
import (
|
||
|
|
"archive/tar"
|
||
|
|
"fmt"
|
||
|
|
"os"
|
||
|
|
"path/filepath"
|
||
|
|
"strings"
|
||
|
|
|
||
|
|
"github.com/docker/docker/pkg/idtools"
|
||
|
|
"github.com/docker/docker/pkg/longpath"
|
||
|
|
)
|
||
|
|
|
||
|
|
// CanonicalTarNameForPath returns platform-specific filepath
|
||
|
|
// to canonical posix-style path for tar archival. p is relative
|
||
|
|
// path.
|
||
|
|
func CanonicalTarNameForPath(p string) (string, error) {
|
||
|
|
// windows: convert windows style relative path with backslashes
|
||
|
|
// into forward slashes. Since windows does not allow '/' or '\'
|
||
|
|
// in file names, it is mostly safe to replace however we must
|
||
|
|
// check just in case
|
||
|
|
if strings.Contains(p, "/") {
|
||
|
|
return "", fmt.Errorf("Windows path contains forward slash: %s", p)
|
||
|
|
}
|
||
|
|
return strings.Replace(p, string(os.PathSeparator), "/", -1), nil
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
// fixVolumePathPrefix does platform specific processing to ensure that if
|
||
|
|
// the path being passed in is not in a volume path format, convert it to one.
|
||
|
|
func fixVolumePathPrefix(srcPath string) string {
|
||
|
|
return longpath.AddPrefix(srcPath)
|
||
|
|
}
|
||
|
|
|
||
|
|
// getWalkRoot calculates the root path when performing a TarWithOptions.
|
||
|
|
// We use a separate function as this is platform specific.
|
||
|
|
func getWalkRoot(srcPath string, include string) string {
|
||
|
|
return filepath.Join(srcPath, include)
|
||
|
|
}
|
||
|
|
|
||
|
|
func getInodeFromStat(stat interface{}) (inode uint64, err error) {
|
||
|
|
// do nothing. no notion of Inode in stat on Windows
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
func getFileIdentity(stat interface{}) (idtools.Identity, error) {
|
||
|
|
// no notion of file ownership mapping yet on Windows
|
||
|
|
return idtools.Identity{}, nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// chmodTarEntry is used to adjust the file permissions used in tar header based
|
||
|
|
// on the platform the archival is done.
|
||
|
|
func chmodTarEntry(perm os.FileMode) os.FileMode {
|
||
|
|
//perm &= 0755 // this 0-ed out tar flags (like link, regular file, directory marker etc.)
|
||
|
|
permPart := perm & os.ModePerm
|
||
|
|
noPermPart := perm &^ os.ModePerm
|
||
|
|
// Add the x bit: make everything +x from windows
|
||
|
|
permPart |= 0111
|
||
|
|
permPart &= 0755
|
||
|
|
|
||
|
|
return noPermPart | permPart
|
||
|
|
}
|
||
|
|
|
||
|
|
func setHeaderForSpecialDevice(hdr *tar.Header, name string, stat interface{}) (err error) {
|
||
|
|
// do nothing. no notion of Rdev, Nlink in stat on Windows
|
||
|
|
return
|
||
|
|
}
|