//sys	Fchown(fd int, uid int, gid int) (err error)
//sys	Fstatfs(fd int, buf *Statfs_t) (err error)
//sys	Ftruncate(fd int, length int64) (err error)
//sysnb	Getegid() (egid int)
//sysnb	Geteuid() (euid int)
//sysnb	Getgid() (gid int)
//sysnb	Getuid() (uid int)
//sys	Listen(s int, n int) (err error)
//sys	pread(fd int, p []byte, offset int64) (n int, err error) = SYS_PREAD64

		got.Start--
		got.Len++
		if err := syscall.FcntlFlock(3, syscall.F_GETLK, &got); err != nil {
			t.Fatalf("FcntlFlock(F_GETLK) failed: %v", err)
		}
		flock.Pid = int32(syscall.Getppid())
		// Linux kernel always set Whence to 0
		flock.Whence = 0
		if got.Type == flock.Type && got.Start == flock.Start && got.Len == flock.Len && got.Pid == flock.Pid && got.Whence == flock.Whence {
			os.Exit(0)
		}