mirror of
https://github.com/StackExchange/dnscontrol.git
synced 2024-05-11 05:55:12 +00:00
1940ff4ac1
* govendor: Update github.com/golang/protobuf * govendor: Update github.com/gobwas/glob github.com/google/go-github * govendor: Update 3 github.com/robertkrimen/otto * govendor: Update 4 golang.org/x golang.org/x/crypto golang.org/x/net golang.org/x/sys golang.org/x/text golang.org/x/time golang.org/x/crypto * govendor: Update 5 github.com/aws/aws-sdk-go * govendor: Update 6 GCLOUD dependencies
33 lines
980 B
Go
33 lines
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
|
|
}
|