// Copyright 2009 The Chromium Authors // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #include "chrome/browser/importer/firefox_profile_lock.h" #include <errno.h> #include <fcntl.h> #include <sys/stat.h> #include <sys/types.h> #include "base/file_descriptor_posix.h" #include "base/files/file_util.h" // This class is based on Firefox code in: // profile/dirserviceprovider/src/nsProfileLock.cpp // The license block is: /* ***** BEGIN LICENSE BLOCK ***** * Version: MPL 1.1/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Mozilla Public License Version * 1.1 (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.mozilla.org/MPL/ * * Software distributed under the License is distributed on an "AS IS" basis, * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License * for the specific language governing rights and limitations under the * License. * * The Original Code is mozilla.org code. * * The Initial Developer of the Original Code is * Netscape Communications Corporation. * Portions created by the Initial Developer are Copyright (C) 2002 * the Initial Developer. All Rights Reserved. * * Contributor(s): * Conrad Carlen <[email protected]> * Brendan Eich <[email protected]> * Colin Blake <[email protected]> * Javier Pedemonte <[email protected]> * Mats Palmgren <[email protected]> * * Alternatively, the contents of this file may be used under the terms of * either the GNU General Public License Version 2 or later (the "GPL"), or * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), * in which case the provisions of the GPL or the LGPL are applicable instead * of those above. If you wish to allow use of your version of this file only * under the terms of either the GPL or the LGPL, and not to allow others to * use your version of this file under the terms of the MPL, indicate your * decision by deleting the provisions above and replace them with the notice * and other provisions required by the GPL or the LGPL. If you do not delete * the provisions above, a recipient may use your version of this file under * the terms of any one of the MPL, the GPL or the LGPL. * * ***** END LICENSE BLOCK ***** */ void FirefoxProfileLock::Init() { … } void FirefoxProfileLock::Lock() { … } void FirefoxProfileLock::Unlock() { … } bool FirefoxProfileLock::HasAcquired() { … } // This function tries to lock Firefox profile using fcntl(). The return // value of this function together with HasAcquired() tells the current status // of lock. // if return == false: Another process has lock to the profile. // if return == true && HasAcquired() == true: successfully acquired the lock. // if return == false && HasAcquired() == false: Failed to acquire lock due // to some error (so that we can try alternate method of profile lock). bool FirefoxProfileLock::LockWithFcntl() { … }
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