| // Copyright 2019 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| package unix |
| |
| import "unsafe" |
| |
| // FcntlInt performs a fcntl syscall on fd with the provided command and argument. |
| func FcntlInt(fd uintptr, cmd, arg int) (int, error) { |
| 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 := fcntl(int(fd), cmd, int(uintptr(unsafe.Pointer(lk)))) |
| return err |
| } |
| |
| // FcntlFstore performs a fcntl syscall for the F_PREALLOCATE command. |
| func FcntlFstore(fd uintptr, cmd int, fstore *Fstore_t) error { |
| _, err := fcntl(int(fd), cmd, int(uintptr(unsafe.Pointer(fstore)))) |
| return err |
| } |