forked from github/multus-cni
ae4a28b689
Multus community decide that multus support the Kubernetes that Kubernetes community supports, so changed vendor code to the oldest version of currently supported.
37 lines
1.0 KiB
Go
37 lines
1.0 KiB
Go
// Copyright 2014 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build dragonfly freebsd linux netbsd openbsd
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package unix
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import "unsafe"
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// fcntl64Syscall is usually SYS_FCNTL, but is overridden on 32-bit Linux
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// systems by fcntl_linux_32bit.go to be SYS_FCNTL64.
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var fcntl64Syscall uintptr = SYS_FCNTL
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func fcntl(fd int, cmd, arg int) (int, error) {
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valptr, _, errno := Syscall(fcntl64Syscall, uintptr(fd), uintptr(cmd), uintptr(arg))
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var err error
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if errno != 0 {
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err = errno
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}
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return int(valptr), err
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}
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// FcntlInt performs a fcntl syscall on fd with the provided command and argument.
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func FcntlInt(fd uintptr, cmd, arg int) (int, error) {
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return fcntl(int(fd), cmd, arg)
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}
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// FcntlFlock performs a fcntl syscall for the F_GETLK, F_SETLK or F_SETLKW command.
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func FcntlFlock(fd uintptr, cmd int, lk *Flock_t) error {
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_, _, errno := Syscall(fcntl64Syscall, fd, uintptr(cmd), uintptr(unsafe.Pointer(lk)))
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if errno == 0 {
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return nil
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}
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return errno
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}
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