1 // Copyright (c) 2008 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #include "chrome/browser/importer/firefox_profile_lock.h"
6
7 #include <windows.h>
8
9 // This class is based on Firefox code in:
10 // profile/dirserviceprovider/src/nsProfileLock.cpp
11 // The license block is:
12
13 /* ***** BEGIN LICENSE BLOCK *****
14 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
15 *
16 * The contents of this file are subject to the Mozilla Public License Version
17 * 1.1 (the "License"); you may not use this file except in compliance with
18 * the License. You may obtain a copy of the License at
19 * http://www.mozilla.org/MPL/
20 *
21 * Software distributed under the License is distributed on an "AS IS" basis,
22 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
23 * for the specific language governing rights and limitations under the
24 * License.
25 *
26 * The Original Code is mozilla.org code.
27 *
28 * The Initial Developer of the Original Code is
29 * Netscape Communications Corporation.
30 * Portions created by the Initial Developer are Copyright (C) 2002
31 * the Initial Developer. All Rights Reserved.
32 *
33 * Contributor(s):
34 * Conrad Carlen <ccarlen@netscape.com>
35 * Brendan Eich <brendan@mozilla.org>
36 * Colin Blake <colin@theblakes.com>
37 * Javier Pedemonte <pedemont@us.ibm.com>
38 * Mats Palmgren <mats.palmgren@bredband.net>
39 *
40 * Alternatively, the contents of this file may be used under the terms of
41 * either the GNU General Public License Version 2 or later (the "GPL"), or
42 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
43 * in which case the provisions of the GPL or the LGPL are applicable instead
44 * of those above. If you wish to allow use of your version of this file only
45 * under the terms of either the GPL or the LGPL, and not to allow others to
46 * use your version of this file under the terms of the MPL, indicate your
47 * decision by deleting the provisions above and replace them with the notice
48 * and other provisions required by the GPL or the LGPL. If you do not delete
49 * the provisions above, a recipient may use your version of this file under
50 * the terms of any one of the MPL, the GPL or the LGPL.
51 *
52 * ***** END LICENSE BLOCK ***** */
53
Init()54 void FirefoxProfileLock::Init() {
55 lock_handle_ = INVALID_HANDLE_VALUE;
56 }
57
Lock()58 void FirefoxProfileLock::Lock() {
59 if (HasAcquired())
60 return;
61 lock_handle_ = CreateFile(lock_file_.value().c_str(),
62 GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_ALWAYS,
63 FILE_FLAG_DELETE_ON_CLOSE, NULL);
64 }
65
Unlock()66 void FirefoxProfileLock::Unlock() {
67 if (!HasAcquired())
68 return;
69 CloseHandle(lock_handle_);
70 lock_handle_ = INVALID_HANDLE_VALUE;
71 }
72
HasAcquired()73 bool FirefoxProfileLock::HasAcquired() {
74 return (lock_handle_ != INVALID_HANDLE_VALUE);
75 }
76