[github/fretlink/terraform-provider-statuscake.git] / vendor / github.com / fsouza / go-dockerclient / external / golang.org / x / sys / unix / flock.go

// +build linux darwin freebsd openbsd netbsd dragonfly

// Copyright 2014 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.

// +build darwin dragonfly freebsd linux netbsd openbsd

package unix

import "unsafe"

// fcntl64Syscall is usually SYS_FCNTL, but is overridden on 32-bit Linux
// systems by flock_linux_32bit.go to be SYS_FCNTL64.
var fcntl64Syscall uintptr = SYS_FCNTL

// 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 {
	_, _, errno := Syscall(fcntl64Syscall, fd, uintptr(cmd), uintptr(unsafe.Pointer(lk)))
	if errno == 0 {
		return nil
	}
	return errno
}
Commit	Line	Data
9b12e4fe JC	1	// +build linux darwin freebsd openbsd netbsd dragonfly
	2
	3	// Copyright 2014 The Go Authors. All rights reserved.
	4	// Use of this source code is governed by a BSD-style
	5	// license that can be found in the LICENSE file.
	6
	7	// +build darwin dragonfly freebsd linux netbsd openbsd
	8
	9	package unix
	10
	11	import "unsafe"
	12
	13	// fcntl64Syscall is usually SYS_FCNTL, but is overridden on 32-bit Linux
	14	// systems by flock_linux_32bit.go to be SYS_FCNTL64.
	15	var fcntl64Syscall uintptr = SYS_FCNTL
	16
	17	// FcntlFlock performs a fcntl syscall for the F_GETLK, F_SETLK or F_SETLKW command.
	18	func FcntlFlock(fd uintptr, cmd int, lk *Flock_t) error {
	19	_, _, errno := Syscall(fcntl64Syscall, fd, uintptr(cmd), uintptr(unsafe.Pointer(lk)))
	20	if errno == 0 {
	21	return nil
	22	}
	23	return errno
	24	}