1 files changed, 87 insertions, 0 deletions
diff --git a/chrome/browser/importer/firefox_profile_lock.cc b/chrome/browser/importer/firefox_profile_lock.cc
new file mode 100644
index 0000000..aaab891
--- /dev/null
+++ b/chrome/browser/importer/firefox_profile_lock.cc
@@ -0,0 +1,87 @@
+// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// 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 "base/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 <ccarlen@netscape.com>
+*   Brendan Eich <brendan@mozilla.org>
+*   Colin Blake <colin@theblakes.com>
+*   Javier Pedemonte <pedemont@us.ibm.com>
+*   Mats Palmgren <mats.palmgren@bredband.net>
+*
+* 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 ***** */
+
+// static
+wchar_t FirefoxProfileLock::kLockFileName[] = L"parent.lock";
+
+FirefoxProfileLock::FirefoxProfileLock(const std::wstring& path)
+    : lock_handle_(INVALID_HANDLE_VALUE) {
+  lock_file_ = path;
+  file_util::AppendToPath(&lock_file_, kLockFileName);
+  Lock();
+}
+
+FirefoxProfileLock::~FirefoxProfileLock() {
+  Unlock();
+}
+
+void FirefoxProfileLock::Lock() {
+  if (HasAcquired())
+    return;
+  lock_handle_ = CreateFile(lock_file_.c_str(), GENERIC_READ | GENERIC_WRITE,
+                            0, NULL, OPEN_ALWAYS, FILE_FLAG_DELETE_ON_CLOSE,
+                            NULL);
+}
+
+void FirefoxProfileLock::Unlock() {
+  if (!HasAcquired())
+    return;
+  CloseHandle(lock_handle_);
+  lock_handle_ = INVALID_HANDLE_VALUE;
+}
+
+bool FirefoxProfileLock::HasAcquired() {
+  return (lock_handle_ != INVALID_HANDLE_VALUE);
+}
+
+