if err != nil {
			return false
		}
		return len(entries) == 0
	}
	var stat syscall.Stat_t
	if err := syscall.Stat(dirname, &stat); err != nil {
		return false
	}
	return stat.Mode&syscall.S_IFMT == syscall.S_IFDIR && stat.Nlink == 2

	// but these seem to be the values agreed on by tools.
	s_IFMT   = 0xf000
	s_IFSOCK = 0xc000
	s_IFLNK  = 0xa000
	s_IFREG  = 0x8000
	s_IFBLK  = 0x6000
	s_IFDIR  = 0x4000
	s_IFCHR  = 0x2000
	s_IFIFO  = 0x1000
	s_ISUID  = 0x800
	s_ISGID  = 0x400
	s_ISVTX  = 0x200

	msdosDir      = 0x10
	msdosReadOnly = 0x01
)

pkg syscall, const SO_RCVBUF ideal-int
pkg syscall, const SO_REUSEADDR ideal-int
pkg syscall, const SO_SNDBUF ideal-int
pkg syscall, const S_IFBLK ideal-int
pkg syscall, const S_IFCHR ideal-int
pkg syscall, const S_IFDIR ideal-int
pkg syscall, const S_IFIFO ideal-int
pkg syscall, const S_IFLNK ideal-int
pkg syscall, const S_IFMT ideal-int
pkg syscall, const S_IFREG ideal-int
pkg syscall, const S_IFSOCK ideal-int

pkg syscall, const SOCK_RAW = 3
pkg syscall, const SOCK_SEQPACKET = 5
pkg syscall, const SOCK_STREAM = 1
pkg syscall, const S_IFBLK = 24576
pkg syscall, const S_IFCHR = 8192
pkg syscall, const S_IFDIR = 16384
pkg syscall, const S_IFIFO = 4096
pkg syscall, const S_IFLNK = 40960
pkg syscall, const S_IFREG = 32768
pkg syscall, const S_IFSOCK = 49152
pkg syscall, const S_IRUSR = 256