flock_unix.go

// Copyright (C) 2017 Google Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

// +build linux darwin

package flock

import (
	"os"
	"syscall"
)

func sysTryLock(f *os.File) error {
	return syscall.Flock(int(f.Fd()), syscall.LOCK_EX|syscall.LOCK_NB)
}

func sysUnlock(f *os.File) error {
	return syscall.Flock(int(f.Fd()), syscall.LOCK_UN)
}