package archive // import "github.com/docker/docker/pkg/archive" import ( "archive/tar" "os" "path/filepath" "github.com/docker/docker/pkg/idtools" "github.com/docker/docker/pkg/longpath" ) // 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) } // CanonicalTarNameForPath returns platform-specific filepath // to canonical posix-style path for tar archival. p is relative // path. func CanonicalTarNameForPath(p string) string { return filepath.ToSlash(p) } // 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 } func getInodeFromStat(stat interface{}) (inode uint64, err error) { // do nothing. no notion of Inode in stat on Windows return } // handleTarTypeBlockCharFifo is an OS-specific helper function used by // createTarFile to handle the following types of header: Block; Char; Fifo func handleTarTypeBlockCharFifo(hdr *tar.Header, path string) error { return nil } func handleLChmod(hdr *tar.Header, path string, hdrInfo os.FileInfo) error { return nil } func getFileUIDGID(stat interface{}) (idtools.Identity, error) { // no notion of file ownership mapping yet on Windows return idtools.Identity{UID: 0, GID: 0}, nil }