if err != nil {
		return errInvalidArgument
	}
	data := &syscall.Win32finddata{}
	handle, err := syscall.FindFirstFile(globAllP, data)
	if err != nil {
		if err = syscallErrToFileErr(dirPath, err); err == errFileNotFound {
			return nil
		}
		return err
	}
	defer syscall.FindClose(handle)

	for ; ; err = syscall.FindNextFile(handle, data) {
		if err != nil {