whereabouts/vendor/golang.org/x/sys/unix/fcntl.go
Christopher Randles 9679a7b096 Use go mod & update dependencies (#8)
* go mod init

* go mod tidy

* go mod vendor

* update glide reference to go mod

* update deps to latest

* use github as import path for etcd to avoid some build errors

* remove glide files

* run fmt
2019-08-22 15:10:46 -04:00

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980 B
Go

// 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 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
// FcntlInt performs a fcntl syscall on fd with the provided command and argument.
func FcntlInt(fd uintptr, cmd, arg int) (int, error) {
valptr, _, errno := Syscall(fcntl64Syscall, fd, uintptr(cmd), uintptr(arg))
var err error
if errno != 0 {
err = errno
}
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 {
_, _, errno := Syscall(fcntl64Syscall, fd, uintptr(cmd), uintptr(unsafe.Pointer(lk)))
if errno == 0 {
return nil
}
return errno
}