fs.mode |= ModeSetuid
	}
	if fs.sys.Mode&syscall.S_ISVTX != 0 {
		fs.mode |= ModeSticky
	}
}

func stTimespecToTime(ts syscall.StTimespec_t) time.Time {
	return time.Unix(int64(ts.Sec), int64(ts.Nsec))
}

// For testing.
func atime(fi FileInfo) time.Time {
	return stTimespecToTime(fi.Sys().(*syscall.Stat_t).Atim)