path: root/Godeps/_workspace/src/github.com/syndtr/goleveldb/leveldb/storage/file_storage_solaris.go

// 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); err != nil {
        return err
    }
    return fl.f.Close()
}

func newFileLock(path string) (fl fileLock, err error) {
    f, err := os.OpenFile(path, os.O_RDWR|os.O_CREATE, 0644)
    if err != nil {
        return
    }
    err = setFileLock(f, true)
    if err != nil {
        f.Close()
        return
    }
    fl = &unixFileLock{f: f}
    return
}

func setFileLock(f *os.File, lock bool) error {
    flock := syscall.Flock_t{
        Type:   syscall.F_UNLCK,
        Start:  0,
        Len:    0,
        Whence: 1,
    }
    if lock {
        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
}