type lockedSource struct {
	lk sync.Mutex
	s  *rngSource
}

func (r *lockedSource) Int63() (n int64) {
	r.lk.Lock()
	n = r.s.Int63()
	r.lk.Unlock()
	return
}

func (r *lockedSource) Uint64() (n uint64) {
	r.lk.Lock()
	n = r.s.Uint64()
	r.lk.Unlock()
	return
}

func (r *lockedSource) Seed(seed int64) {
	r.lk.Lock()
	r.seed(seed)
	r.lk.Unlock()
}

		Object:    object,
		VersionID: versionID,
		DiskCount: len(storageDisks),
	}

	if !opts.NoLock {
		lk := er.NewNSLock(bucket, object)
		lkctx, err := lk.GetLock(ctx, globalOperationTimeout)
		if err != nil {
			return result, err
		}
		ctx = lkctx.Context()
		defer lk.Unlock(lkctx)
	}

	// Re-read when we have lock...

		if err != nil {
			return oi, err
		}
	}

	if !opts.NoLock {
		lk := er.NewNSLock(bucket, object)
		lkctx, err := lk.GetLock(ctx, globalOperationTimeout)
		if err != nil {
			return ObjectInfo{}, err
		}
		ctx = lkctx.Context()
		defer lk.Unlock(lkctx)
	}

	// Accept encrypted checksum from incoming request.

	return fcntl(int(fd), cmd, arg)
}

// FcntlFlock performs a fcntl syscall for the F_GETLK, F_SETLK or F_SETLKW command.
func FcntlFlock(fd uintptr, cmd int, lk *Flock_t) error {
	_, err := fcntlPtr(int(fd), cmd, unsafe.Pointer(lk))
	return err
}

//sys	ppoll(fds *PollFd, nfds int, timeout *Timespec, sigmask *Sigset_t) (n int, err error)

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// FcntlFlock performs a fcntl syscall for the [F_GETLK], [F_SETLK] or [F_SETLKW] command.
func FcntlFlock(fd uintptr, cmd int, lk *Flock_t) error {
	_, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&libc_fcntl)), 3, uintptr(fd), uintptr(cmd), uintptr(unsafe.Pointer(lk)), 0, 0, 0)
	if e1 != 0 {
		return e1
	}
	return nil
}

func anyToSockaddr(rsa *RawSockaddrAny) (Sockaddr, error) {

			erasureLockers[endpoint.Host] = newLockAPI(endpoint)
		}
	}

	var wg sync.WaitGroup
	var lk sync.Mutex
	for i := 0; i < setCount; i++ {
		lockerEpSet := set.NewStringSet()
		for j := 0; j < setDriveCount; j++ {
			wg.Add(1)
			go func(i int, endpoint Endpoint) {
				defer wg.Done()

				lk.Lock()
				// Only add lockers only one per endpoint and per erasure set.

	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

func FcntlFlock(fd uintptr, cmd int, lk *Flock_t) (err error) {
	_, e1 := callfcntl(fd, cmd, uintptr(unsafe.Pointer(lk)))
	if e1 != 0 {
		err = errnoErr(e1)
	}
	return
}

// THIS FILE IS GENERATED BY THE COMMAND AT THE TOP; DO NOT EDIT

//sys	FcntlInt(fd uintptr, cmd int, arg int) (r int,err error) = fcntl

// FcntlFlock performs a fcntl syscall for the F_GETLK, F_SETLK or F_SETLKW command.
//sys	FcntlFlock(fd uintptr, cmd int, lk *Flock_t) (err error) = fcntl

//sys	fcntl(fd int, cmd int, arg int) (val int, err error)

//sys	fsyncRange(fd int, how int, start int64, length int64) (err error) = fsync_range

func Fsync(fd int) error {

	}
	return int(valptr), err
}

// FcntlFlock performs a fcntl syscall for the F_GETLK, F_SETLK or F_SETLKW command.
func FcntlFlock(fd uintptr, cmd int, lk *Flock_t) error {
	_, _, e1 := sysvicall6(uintptr(unsafe.Pointer(&procfcntl)), 3, uintptr(fd), uintptr(cmd), uintptr(unsafe.Pointer(lk)), 0, 0, 0)
	if e1 != 0 {
		return e1
	}
	return nil
}

//sys	futimesat(fildes int, path *byte, times *[2]Timeval) (err error)