t.Helper()
		fi, err := d.Readdir(n)
		if err != wantErr {
			t.Fatalf("Readdir of %d got error %v, want %v", n, err, wantErr)
		}
		if g, e := len(fi), want; g != e {
			t.Errorf("Readdir of %d got %d files, want %d", n, g, e)
		}
	}

	readDirExpect := func(n, want int, wantErr error) {
		t.Helper()
		de, err := d.ReadDir(n)
		if err != wantErr {

	if !found {
		return "", false
	}
	return filepath.ToSlash(after), true
}

// readDir calls ctxt.ReadDir (if not nil) or else os.ReadDir.
func (ctxt *Context) readDir(path string) ([]fs.DirEntry, error) {
	// TODO: add a fs.DirEntry version of Context.ReadDir
	if f := ctxt.ReadDir; f != nil {
		fis, err := f(path)
		if err != nil {
			return nil, err
		}
		des := make([]fs.DirEntry, len(fis))

		// to verify for legacy version.
		if formatLegacy {
			// We only need this code if we are moving
			// from `xl.json` to `xl.meta`, we can avoid
			// one extra readdir operation here for all
			// new deployments.
			entries, err := readDir(currentDataPath)
			if err != nil && err != errFileNotFound {
				return res, osErrToFileErr(err)
			}
			for _, entry := range entries {

	list, _ := os.ReadDir(dir)
	for _, info := range list {
		if info.Type().IsRegular() && strings.HasSuffix(info.Name(), ".go") {
			if com := findImportComment(filepath.Join(dir, info.Name())); com != "" {
				return com, nil
			}
		}
	}
	for _, info1 := range list {
		if info1.IsDir() {
			files, _ := os.ReadDir(filepath.Join(dir, info1.Name()))

	return filepath.Join(t.dir, strings.Replace(t.goFile, ".go", ".dir", -1))
}

// goDirFiles returns .go files in dir.
func goDirFiles(dir string) (filter []fs.DirEntry, _ error) {
	files, err := os.ReadDir(dir)
	if err != nil {
		return nil, err
	}
	for _, goFile := range files {
		if filepath.Ext(goFile.Name()) == ".go" {
			filter = append(filter, goFile)
		}
	}
	return filter, nil
}

}

func calcRestartCountByLogDir(path string) (int, error) {
	// if the path doesn't exist then it's not an error
	if _, err := os.Stat(path); err != nil {
		return 0, nil
	}
	files, err := os.ReadDir(path)
	if err != nil {
		return 0, err
	}
	if len(files) == 0 {
		return 0, nil
	}
	restartCount := 0
	restartCountLogFileRegex := regexp.MustCompile(`^(\d+)\.log(\..*)?`)

	path   string // as opened
	entpos int
}

func (f *fakeFile) Close() error               { return nil }
func (f *fakeFile) Stat() (fs.FileInfo, error) { return f.fi, nil }
func (f *fakeFile) Readdir(count int) ([]fs.FileInfo, error) {
	if !f.fi.dir {
		return nil, fs.ErrInvalid
	}
	var fis []fs.FileInfo

	limit := f.entpos + count
	if count <= 0 || limit > len(f.fi.ents) {
		limit = len(f.fi.ents)

func Readdir(dir uintptr) (dirent *Dirent, err error) {
	runtime.EnterSyscall()
	r0, e2, e1 := CallLeFuncWithErr(GetZosLibVec()+SYS___READDIR_A<<4, uintptr(dir))
	runtime.ExitSyscall()
	dirent = (*Dirent)(unsafe.Pointer(r0))
	if int64(r0) == -1 {
		err = errnoErr2(e1, e2)
	}
	return
}

	h := cache.NewHash("open")
	info, err := os.Stat(name)
	if err != nil {
		fmt.Fprintf(h, "err %v\n", err)
		return h.Sum(), nil
	}
	hashWriteStat(h, info)
	if info.IsDir() {
		files, err := os.ReadDir(name)
		if err != nil {
			fmt.Fprintf(h, "err %v\n", err)
		}
		for _, f := range files {
			fmt.Fprintf(h, "file %s ", f.Name())
			finfo, err := f.Info()
			if err != nil {

  dependencies:
    bytes "3.1.2"
    http-errors "2.0.0"
    iconv-lite "0.4.24"
    unpipe "1.0.0"

readdirp@~3.6.0:
  version "3.6.0"
  resolved "https://registry.yarnpkg.com/readdirp/-/readdirp-3.6.0.tgz#74a370bd857116e245b29cc97340cd431a02a6c7"
  integrity sha512-hOS089on8RduqdbhvQ5Z37A0ESjsqz6qnRcffsMU3495FuTdqSm+7bhJ29JvIOsBDEEnan5DPu9t3To9VRlMzA==
  dependencies: