1// Copyright 2019 The Go Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style 3// license that can be found in the LICENSE file. 4 5package unix 6 7import "unsafe" 8 9// FcntlInt performs a fcntl syscall on fd with the provided command and argument. 10func FcntlInt(fd uintptr, cmd, arg int) (int, error) { 11 return fcntl(int(fd), cmd, arg) 12} 13 14// FcntlFlock performs a fcntl syscall for the F_GETLK, F_SETLK or F_SETLKW command. 15func FcntlFlock(fd uintptr, cmd int, lk *Flock_t) error { 16 _, err := fcntl(int(fd), cmd, int(uintptr(unsafe.Pointer(lk)))) 17 return err 18} 19 20// FcntlFstore performs a fcntl syscall for the F_PREALLOCATE command. 21func FcntlFstore(fd uintptr, cmd int, fstore *Fstore_t) error { 22 _, err := fcntl(int(fd), cmd, int(uintptr(unsafe.Pointer(fstore)))) 23 return err 24} 25