// reach out into testdata from parent packages.
func adbCopyTree(deviceCwd, subdir string) error {
	dir := ""
	for {
		for _, name := range []string{"testdata", "go.mod", "go.sum"} {
			hostPath := filepath.Join(dir, name)
			if _, err := os.Stat(hostPath); err != nil {
				continue
			}
			devicePath := path.Join(deviceCwd, dir)
			if err := adb("exec-out", "mkdir", "-p", devicePath); err != nil {
				return err
			}

// CreateHeader and CreateRaw.
func (w *Writer) prepare(fh *FileHeader) error {
	if w.last != nil && !w.last.closed {
		if err := w.last.close(); err != nil {
			return err
		}
	}
	if len(w.dir) > 0 && w.dir[len(w.dir)-1].FileHeader == fh {
		// See https://golang.org/issue/11144 confusion.
		return errors.New("archive/zip: invalid duplicate FileHeader")
	}
	return nil
}

pkg syscall (freebsd-arm64), const DLT_C_HDLC = 104
pkg syscall (freebsd-arm64), const DLT_C_HDLC ideal-int
pkg syscall (freebsd-arm64), const DLT_C_HDLC_WITH_DIR = 205
pkg syscall (freebsd-arm64), const DLT_C_HDLC_WITH_DIR ideal-int
pkg syscall (freebsd-arm64), const DLT_CAN_SOCKETCAN = 227
pkg syscall (freebsd-arm64), const DLT_CAN_SOCKETCAN ideal-int
pkg syscall (freebsd-arm64), const DLT_CAN20B = 190

pkg syscall (freebsd-riscv64), const DLT_C_HDLC = 104 #53466
pkg syscall (freebsd-riscv64), const DLT_C_HDLC ideal-int #53466
pkg syscall (freebsd-riscv64), const DLT_C_HDLC_WITH_DIR = 205 #53466
pkg syscall (freebsd-riscv64), const DLT_C_HDLC_WITH_DIR ideal-int #53466
pkg syscall (freebsd-riscv64), const DLT_DBUS = 231 #53466
pkg syscall (freebsd-riscv64), const DLT_DBUS ideal-int #53466

pkg syscall (darwin-arm64), const DT_BLK ideal-int
pkg syscall (darwin-arm64), const DT_CHR = 2
pkg syscall (darwin-arm64), const DT_CHR ideal-int
pkg syscall (darwin-arm64), const DT_DIR = 4
pkg syscall (darwin-arm64), const DT_DIR ideal-int
pkg syscall (darwin-arm64), const DT_FIFO = 1
pkg syscall (darwin-arm64), const DT_FIFO ideal-int
pkg syscall (darwin-arm64), const DT_LNK = 10

			testClose{nil},
		},
	}, {
		// Automatically promote zero value of Typeflag depending on the name.
		file: "testdata/file-and-dir.tar",
		tests: []testFnc{
			testHeader{Header{Name: "small.txt", Size: 5}, nil},
			testWrite{"Kilts", 5, nil},
			testHeader{Header{Name: "dir/"}, nil},
			testClose{nil},
		},
	}}

	equalError := func(x, y error) bool {
		_, ok1 := x.(headerError)

			Mode:     0660,
			Size:     0,
			ModTime:  time.Unix(1360578954, 0),
			Typeflag: TypeBlock,
		},
		fm: 0660 | fs.ModeDevice,
	}, {
		// directory.
		h: &Header{
			Name:     "dir/",
			Mode:     0755,
			Size:     0,
			ModTime:  time.Unix(1360601116, 0),
			Typeflag: TypeDir,
		},
		fm: 0755 | fs.ModeDir,
	}, {
		// fifo node.
		h: &Header{
			Name:     "dev/initctl",

	MSR	R6, RNDR                                         // ERROR "system register is not writable"
	MRS	DBGDTRTX_EL0, R5                                 // ERROR "system register is not readable"
	MRS	ICV_DIR_EL1, R5                                  // ERROR "system register is not readable"
	MRS	ICC_SGI1R_EL1, R5                                // ERROR "system register is not readable"