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// Copyright (c) 2012, Suryandaru Triandana <syndtr@gmail.com>
// All rights reserved.
//
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// +build solaris
package storage
import (
"os"
"syscall"
)
type unixFileLock struct {
f *os.File
}
func (fl *unixFileLock) release() error {
if err := setFileLock(fl.f, false, false); err != nil {
return err
}
return fl.f.Close()
}
func newFileLock(path string, readOnly bool) (fl fileLock, err error) {
var flag int
if readOnly {
flag = os.O_RDONLY
} else {
flag = os.O_RDWR
}
f, err := os.OpenFile(path, flag, 0)
if os.IsNotExist(err) {
f, err = os.OpenFile(path, flag|os.O_CREATE, 0644)
}
if err != nil {
return
}
err = setFileLock(f, readOnly, true)
if err != nil {
f.Close()
return
}
fl = &unixFileLock{f: f}
return
}
func setFileLock(f *os.File, readOnly, lock bool) error {
flock := syscall.Flock_t{
Type: syscall.F_UNLCK,
Start: 0,
Len: 0,
Whence: 1,
}
if lock {
if readOnly {
flock.Type = syscall.F_RDLCK
} else {
flock.Type = syscall.F_WRLCK
}
}
return syscall.FcntlFlock(f.Fd(), syscall.F_SETLK, &flock)
}
func rename(oldpath, newpath string) error {
return os.Rename(oldpath, newpath)
}
func syncDir(name string) error {
f, err := os.Open(name)
if err != nil {
return err
}
defer f.Close()
if err := f.Sync(); err != nil {
return err
}
return nil
}
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