2003-05-02 07:59:23 +04:00
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2002
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Conrad Carlen <ccarlen@netscape.com>
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* Brendan Eich <brendan@mozilla.org>
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* Colin Blake <colin@theblakes.com>
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* Javier Pedemonte <pedemont@us.ibm.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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2004-05-26 22:46:42 +04:00
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#include "nsProfileStringTypes.h"
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2003-05-02 07:59:23 +04:00
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#include "nsProfileLock.h"
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#if defined(XP_MAC) || defined(XP_MACOSX)
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#include <Processes.h>
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#include <CFBundle.h>
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#endif
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#ifdef XP_UNIX
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#include <unistd.h>
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#include <fcntl.h>
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#include <errno.h>
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#include <signal.h>
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#include <stdlib.h>
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#include "prnetdb.h"
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#include "prsystem.h"
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#include "prprf.h"
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#endif
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#ifdef VMS
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#include <rmsdef.h>
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#endif
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// **********************************************************************
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// class nsProfileLock
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2003-06-04 01:14:16 +04:00
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//
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// This code was moved from profile/src/nsProfileAccess.
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2003-05-02 07:59:23 +04:00
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// **********************************************************************
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nsProfileLock::nsProfileLock() :
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mHaveLock(PR_FALSE)
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2003-06-04 01:14:16 +04:00
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#if defined (XP_WIN)
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2003-05-02 07:59:23 +04:00
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,mLockFileHandle(INVALID_HANDLE_VALUE)
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#elif defined (XP_OS2)
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,mLockFileHandle(-1)
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#elif defined (XP_UNIX)
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,mPidLockFileName(nsnull)
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,mLockFileDesc(-1)
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#endif
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{
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#if defined (XP_UNIX)
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next = prev = this;
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#endif
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}
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nsProfileLock::nsProfileLock(nsProfileLock& src)
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{
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*this = src;
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}
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nsProfileLock& nsProfileLock::operator=(nsProfileLock& rhs)
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{
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Unlock();
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mHaveLock = rhs.mHaveLock;
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rhs.mHaveLock = PR_FALSE;
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2003-06-04 01:14:16 +04:00
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#if defined (XP_WIN)
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2003-05-02 07:59:23 +04:00
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mLockFileHandle = rhs.mLockFileHandle;
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rhs.mLockFileHandle = INVALID_HANDLE_VALUE;
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#elif defined (XP_OS2)
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mLockFileHandle = rhs.mLockFileHandle;
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rhs.mLockFileHandle = -1;
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#elif defined (XP_UNIX)
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mLockFileDesc = rhs.mLockFileDesc;
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rhs.mLockFileDesc = -1;
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mPidLockFileName = rhs.mPidLockFileName;
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rhs.mPidLockFileName = nsnull;
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if (mPidLockFileName)
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{
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// rhs had a symlink lock, therefore it was on the list.
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PR_REMOVE_LINK(&rhs);
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PR_APPEND_LINK(this, &mPidLockList);
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}
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#endif
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return *this;
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}
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nsProfileLock::~nsProfileLock()
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{
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Unlock();
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}
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#if defined (XP_UNIX)
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static int setupPidLockCleanup;
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PRCList nsProfileLock::mPidLockList =
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PR_INIT_STATIC_CLIST(&nsProfileLock::mPidLockList);
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void nsProfileLock::RemovePidLockFiles()
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{
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while (!PR_CLIST_IS_EMPTY(&mPidLockList))
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{
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nsProfileLock *lock = NS_STATIC_CAST(nsProfileLock*, mPidLockList.next);
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lock->Unlock();
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}
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}
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static struct sigaction SIGHUP_oldact;
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static struct sigaction SIGINT_oldact;
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static struct sigaction SIGQUIT_oldact;
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static struct sigaction SIGILL_oldact;
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static struct sigaction SIGABRT_oldact;
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static struct sigaction SIGSEGV_oldact;
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static struct sigaction SIGTERM_oldact;
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void nsProfileLock::FatalSignalHandler(int signo)
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{
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// Remove any locks still held.
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RemovePidLockFiles();
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// Chain to the old handler, which may exit.
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struct sigaction *oldact = nsnull;
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switch (signo) {
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case SIGHUP:
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oldact = &SIGHUP_oldact;
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break;
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case SIGINT:
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oldact = &SIGINT_oldact;
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break;
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case SIGQUIT:
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oldact = &SIGQUIT_oldact;
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break;
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case SIGILL:
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oldact = &SIGILL_oldact;
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break;
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case SIGABRT:
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oldact = &SIGABRT_oldact;
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break;
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case SIGSEGV:
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oldact = &SIGSEGV_oldact;
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break;
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case SIGTERM:
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oldact = &SIGTERM_oldact;
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break;
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default:
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NS_NOTREACHED("bad signo");
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break;
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}
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2004-01-09 02:02:21 +03:00
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if (oldact) {
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if (oldact->sa_handler == SIG_DFL) {
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// Make sure the default sig handler is executed
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// We need it to get Mozilla to dump core.
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sigaction(signo,oldact,NULL);
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// Now that we've restored the default handler, unmask the
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// signal and invoke it.
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sigset_t unblock_sigs;
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sigemptyset(&unblock_sigs);
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sigaddset(&unblock_sigs, signo);
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sigprocmask(SIG_UNBLOCK, &unblock_sigs, NULL);
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raise(signo);
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}
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else if (oldact->sa_handler && oldact->sa_handler != SIG_IGN)
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{
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oldact->sa_handler(signo);
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}
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2003-05-02 07:59:23 +04:00
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}
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// Backstop exit call, just in case.
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_exit(signo);
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}
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2003-06-04 01:14:16 +04:00
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nsresult nsProfileLock::LockWithFcntl(const nsACString& lockFilePath)
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{
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2004-10-21 05:55:36 +04:00
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nsresult rv = NS_OK;
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mLockFileDesc = open(PromiseFlatCString(lockFilePath).get(),
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O_WRONLY | O_CREAT | O_TRUNC, 0666);
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if (mLockFileDesc != -1)
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{
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struct flock lock;
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lock.l_start = 0;
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lock.l_len = 0; // len = 0 means entire file
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lock.l_type = F_WRLCK;
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lock.l_whence = SEEK_SET;
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if (fcntl(mLockFileDesc, F_SETLK, &lock) == -1)
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{
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close(mLockFileDesc);
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mLockFileDesc = -1;
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// With OS X, on NFS, errno == ENOTSUP
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// XXX Check for that and return specific rv for it?
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2003-06-04 01:14:16 +04:00
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#ifdef DEBUG
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2004-10-21 05:55:36 +04:00
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printf("fcntl(F_SETLK) failed. errno = %d\n", errno);
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2003-06-04 01:14:16 +04:00
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#endif
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2004-10-21 05:55:36 +04:00
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if (errno == EAGAIN || errno == EACCES)
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rv = NS_ERROR_FILE_ACCESS_DENIED;
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else
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rv = NS_ERROR_FAILURE;
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}
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else
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mHaveLock = PR_TRUE;
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}
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else
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{
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NS_ERROR("Failed to open lock file.");
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rv = NS_ERROR_FAILURE;
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}
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return rv;
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2003-06-04 01:14:16 +04:00
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}
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nsresult nsProfileLock::LockWithSymlink(const nsACString& lockFilePath)
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{
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2004-10-21 05:55:36 +04:00
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nsresult rv;
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struct in_addr inaddr;
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inaddr.s_addr = htonl(INADDR_LOOPBACK);
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char hostname[256];
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PRStatus status = PR_GetSystemInfo(PR_SI_HOSTNAME, hostname, sizeof hostname);
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if (status == PR_SUCCESS)
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{
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char netdbbuf[PR_NETDB_BUF_SIZE];
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PRHostEnt hostent;
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status = PR_GetHostByName(hostname, netdbbuf, sizeof netdbbuf, &hostent);
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if (status == PR_SUCCESS)
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memcpy(&inaddr, hostent.h_addr, sizeof inaddr);
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}
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char *signature =
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PR_smprintf("%s:%lu", inet_ntoa(inaddr), (unsigned long)getpid());
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const nsPromiseFlatCString& flat = PromiseFlatCString(lockFilePath);
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const char *fileName = flat.get();
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int symlink_rv, symlink_errno, tries = 0;
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// use ns4.x-compatible symlinks if the FS supports them
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while ((symlink_rv = symlink(signature, fileName)) < 0)
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{
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symlink_errno = errno;
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if (symlink_errno != EEXIST)
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break;
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// the link exists; see if it's from this machine, and if
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// so if the process is still active
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char buf[1024];
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int len = readlink(fileName, buf, sizeof buf - 1);
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if (len > 0)
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{
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buf[len] = '\0';
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char *colon = strchr(buf, ':');
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if (colon)
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{
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*colon++ = '\0';
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unsigned long addr = inet_addr(buf);
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if (addr != (unsigned long) -1)
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{
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char *after = nsnull;
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pid_t pid = strtol(colon, &after, 0);
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if (pid != 0 && *after == '\0')
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{
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if (addr != inaddr.s_addr)
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{
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// Remote lock: give up even if stuck.
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break;
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}
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// kill(pid,0) is a neat trick to check if a
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// process exists
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if (kill(pid, 0) == 0 || errno != ESRCH)
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{
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// Local process appears to be alive, ass-u-me it
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// is another Mozilla instance, or a compatible
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// derivative, that's currently using the profile.
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// XXX need an "are you Mozilla?" protocol
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break;
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}
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}
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}
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}
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}
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// Lock seems to be bogus: try to claim it. Give up after a large
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// number of attempts (100 comes from the 4.x codebase).
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(void) unlink(fileName);
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if (++tries > 100)
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break;
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}
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PR_smprintf_free(signature);
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signature = nsnull;
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if (symlink_rv == 0)
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{
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// We exclusively created the symlink: record its name for eventual
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// unlock-via-unlink.
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rv = NS_OK;
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mHaveLock = PR_TRUE;
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mPidLockFileName = strdup(fileName);
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if (mPidLockFileName)
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{
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PR_APPEND_LINK(this, &mPidLockList);
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if (!setupPidLockCleanup++)
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{
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// Clean up on normal termination.
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atexit(RemovePidLockFiles);
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// Clean up on abnormal termination, using POSIX sigaction.
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// Don't arm a handler if the signal is being ignored, e.g.,
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// because mozilla is run via nohup.
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struct sigaction act, oldact;
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act.sa_handler = FatalSignalHandler;
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act.sa_flags = 0;
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sigfillset(&act.sa_mask);
|
2003-06-04 01:14:16 +04:00
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#define CATCH_SIGNAL(signame) \
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PR_BEGIN_MACRO \
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2004-10-21 05:55:36 +04:00
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if (sigaction(signame, NULL, &oldact) == 0 && \
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oldact.sa_handler != SIG_IGN) \
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{ \
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sigaction(signame, &act, &signame##_oldact); \
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} \
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PR_END_MACRO
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CATCH_SIGNAL(SIGHUP);
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CATCH_SIGNAL(SIGINT);
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CATCH_SIGNAL(SIGQUIT);
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|
CATCH_SIGNAL(SIGILL);
|
|
|
|
CATCH_SIGNAL(SIGABRT);
|
|
|
|
CATCH_SIGNAL(SIGSEGV);
|
|
|
|
CATCH_SIGNAL(SIGTERM);
|
2003-06-04 01:14:16 +04:00
|
|
|
|
|
|
|
#undef CATCH_SIGNAL
|
2004-10-21 05:55:36 +04:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else if (symlink_errno == EEXIST)
|
|
|
|
rv = NS_ERROR_FILE_ACCESS_DENIED;
|
|
|
|
else
|
|
|
|
{
|
2003-06-04 01:14:16 +04:00
|
|
|
#ifdef DEBUG
|
2004-10-21 05:55:36 +04:00
|
|
|
printf("symlink() failed. errno = %d\n", errno);
|
2003-06-04 01:14:16 +04:00
|
|
|
#endif
|
2004-10-21 05:55:36 +04:00
|
|
|
rv = NS_ERROR_FAILURE;
|
|
|
|
}
|
|
|
|
return rv;
|
2003-06-04 01:14:16 +04:00
|
|
|
}
|
2003-05-02 07:59:23 +04:00
|
|
|
#endif /* XP_UNIX */
|
|
|
|
|
|
|
|
nsresult nsProfileLock::Lock(nsILocalFile* aFile)
|
|
|
|
{
|
2003-06-04 01:14:16 +04:00
|
|
|
#if defined (XP_MACOSX)
|
2003-05-02 07:59:23 +04:00
|
|
|
NS_NAMED_LITERAL_STRING(LOCKFILE_NAME, ".parentlock");
|
|
|
|
NS_NAMED_LITERAL_STRING(OLD_LOCKFILE_NAME, "parent.lock");
|
|
|
|
#elif defined (XP_UNIX)
|
|
|
|
NS_NAMED_LITERAL_STRING(OLD_LOCKFILE_NAME, "lock");
|
|
|
|
NS_NAMED_LITERAL_STRING(LOCKFILE_NAME, ".parentlock");
|
|
|
|
#else
|
|
|
|
NS_NAMED_LITERAL_STRING(LOCKFILE_NAME, "parent.lock");
|
|
|
|
#endif
|
|
|
|
|
|
|
|
nsresult rv;
|
|
|
|
NS_ENSURE_STATE(!mHaveLock);
|
|
|
|
|
|
|
|
PRBool isDir;
|
|
|
|
rv = aFile->IsDirectory(&isDir);
|
|
|
|
if (NS_FAILED(rv))
|
|
|
|
return rv;
|
|
|
|
if (!isDir)
|
|
|
|
return NS_ERROR_FILE_NOT_DIRECTORY;
|
|
|
|
|
|
|
|
nsCOMPtr<nsILocalFile> lockFile;
|
|
|
|
rv = aFile->Clone((nsIFile **)((void **)getter_AddRefs(lockFile)));
|
|
|
|
if (NS_FAILED(rv))
|
|
|
|
return rv;
|
|
|
|
|
|
|
|
rv = lockFile->Append(LOCKFILE_NAME);
|
|
|
|
if (NS_FAILED(rv))
|
|
|
|
return rv;
|
|
|
|
|
2003-06-04 01:14:16 +04:00
|
|
|
#if defined(XP_MACOSX)
|
|
|
|
// First, try locking using fcntl. It is more reliable on
|
|
|
|
// a local machine, but may not be supported by an NFS server.
|
2003-05-02 07:59:23 +04:00
|
|
|
nsCAutoString filePath;
|
|
|
|
rv = lockFile->GetNativePath(filePath);
|
|
|
|
if (NS_FAILED(rv))
|
2004-10-21 05:55:36 +04:00
|
|
|
return rv;
|
2003-06-04 01:14:16 +04:00
|
|
|
rv = LockWithFcntl(filePath);
|
|
|
|
if (NS_FAILED(rv) && (rv != NS_ERROR_FILE_ACCESS_DENIED))
|
2003-05-02 07:59:23 +04:00
|
|
|
{
|
2003-06-04 01:14:16 +04:00
|
|
|
// If that failed for any reason other than NS_ERROR_FILE_ACCESS_DENIED,
|
|
|
|
// assume we tried an NFS that does not support it. Now, try with symlink.
|
|
|
|
rv = LockWithSymlink(filePath);
|
2003-05-02 07:59:23 +04:00
|
|
|
}
|
2003-06-04 01:14:16 +04:00
|
|
|
if (NS_SUCCEEDED(rv))
|
2004-10-21 05:55:36 +04:00
|
|
|
{
|
2003-06-04 01:14:16 +04:00
|
|
|
// Check for the old-style lock used by pre-mozilla 1.3 builds.
|
|
|
|
// Those builds used an earlier check to prevent the application
|
|
|
|
// from launching if another instance was already running. Because
|
|
|
|
// of that, we don't need to create an old-style lock as well.
|
|
|
|
struct LockProcessInfo
|
|
|
|
{
|
|
|
|
ProcessSerialNumber psn;
|
|
|
|
unsigned long launchDate;
|
|
|
|
};
|
2004-10-21 05:55:36 +04:00
|
|
|
|
2003-06-04 01:14:16 +04:00
|
|
|
PRFileDesc *fd = nsnull;
|
|
|
|
PRInt32 ioBytes;
|
|
|
|
ProcessInfoRec processInfo;
|
|
|
|
LockProcessInfo lockProcessInfo;
|
2004-10-21 05:55:36 +04:00
|
|
|
|
2003-06-04 01:14:16 +04:00
|
|
|
rv = lockFile->SetLeafName(OLD_LOCKFILE_NAME);
|
2003-05-02 07:59:23 +04:00
|
|
|
if (NS_FAILED(rv))
|
|
|
|
return rv;
|
2003-06-04 01:14:16 +04:00
|
|
|
rv = lockFile->OpenNSPRFileDesc(PR_RDONLY, 0, &fd);
|
|
|
|
if (NS_SUCCEEDED(rv))
|
2003-05-02 07:59:23 +04:00
|
|
|
{
|
2003-06-04 01:14:16 +04:00
|
|
|
ioBytes = PR_Read(fd, &lockProcessInfo, sizeof(LockProcessInfo));
|
|
|
|
PR_Close(fd);
|
2004-10-21 05:55:36 +04:00
|
|
|
|
2003-06-04 01:14:16 +04:00
|
|
|
if (ioBytes == sizeof(LockProcessInfo))
|
2003-05-02 07:59:23 +04:00
|
|
|
{
|
2003-06-04 01:14:16 +04:00
|
|
|
processInfo.processAppSpec = nsnull;
|
|
|
|
processInfo.processName = nsnull;
|
|
|
|
processInfo.processInfoLength = sizeof(ProcessInfoRec);
|
|
|
|
if (::GetProcessInformation(&lockProcessInfo.psn, &processInfo) == noErr &&
|
|
|
|
processInfo.processLaunchDate == lockProcessInfo.launchDate)
|
|
|
|
{
|
|
|
|
return NS_ERROR_FILE_ACCESS_DENIED;
|
|
|
|
}
|
2003-05-02 07:59:23 +04:00
|
|
|
}
|
2003-06-04 01:14:16 +04:00
|
|
|
else
|
2003-05-02 07:59:23 +04:00
|
|
|
{
|
2003-06-04 01:14:16 +04:00
|
|
|
NS_WARNING("Could not read lock file - ignoring lock");
|
2003-05-02 07:59:23 +04:00
|
|
|
}
|
|
|
|
}
|
2003-06-04 01:14:16 +04:00
|
|
|
rv = NS_OK; // Don't propagate error from OpenNSPRFileDesc.
|
2003-05-02 07:59:23 +04:00
|
|
|
}
|
|
|
|
#elif defined(XP_WIN)
|
|
|
|
nsCAutoString filePath;
|
|
|
|
rv = lockFile->GetNativePath(filePath);
|
|
|
|
if (NS_FAILED(rv))
|
|
|
|
return rv;
|
|
|
|
mLockFileHandle = CreateFile(filePath.get(),
|
|
|
|
GENERIC_READ | GENERIC_WRITE,
|
|
|
|
0, // no sharing - of course
|
|
|
|
nsnull,
|
|
|
|
OPEN_ALWAYS,
|
|
|
|
FILE_FLAG_DELETE_ON_CLOSE,
|
|
|
|
nsnull);
|
|
|
|
if (mLockFileHandle == INVALID_HANDLE_VALUE)
|
|
|
|
return NS_ERROR_FILE_ACCESS_DENIED;
|
|
|
|
#elif defined(XP_OS2)
|
|
|
|
nsCAutoString filePath;
|
|
|
|
rv = lockFile->GetNativePath(filePath);
|
|
|
|
if (NS_FAILED(rv))
|
|
|
|
return rv;
|
|
|
|
|
|
|
|
ULONG ulAction = 0;
|
|
|
|
APIRET rc;
|
|
|
|
rc = DosOpen(filePath.get(),
|
|
|
|
&mLockFileHandle,
|
|
|
|
&ulAction,
|
|
|
|
0,
|
|
|
|
FILE_NORMAL,
|
|
|
|
OPEN_ACTION_CREATE_IF_NEW | OPEN_ACTION_OPEN_IF_EXISTS,
|
|
|
|
OPEN_ACCESS_READWRITE | OPEN_SHARE_DENYREADWRITE | OPEN_FLAGS_NOINHERIT,
|
|
|
|
0 );
|
|
|
|
if (rc != NO_ERROR)
|
|
|
|
{
|
|
|
|
mLockFileHandle = -1;
|
|
|
|
return NS_ERROR_FILE_ACCESS_DENIED;
|
|
|
|
}
|
|
|
|
#elif defined(VMS)
|
|
|
|
nsCAutoString filePath;
|
|
|
|
rv = lockFile->GetNativePath(filePath);
|
|
|
|
if (NS_FAILED(rv))
|
|
|
|
return rv;
|
|
|
|
|
|
|
|
mLockFileDesc = open_noshr(filePath.get(), O_CREAT, 0666);
|
|
|
|
if (mLockFileDesc == -1)
|
|
|
|
{
|
|
|
|
if ((errno == EVMSERR) && (vaxc$errno == RMS$_FLK))
|
|
|
|
{
|
|
|
|
return NS_ERROR_FILE_ACCESS_DENIED;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
NS_ERROR("Failed to open lock file.");
|
|
|
|
return NS_ERROR_FAILURE;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#elif defined(XP_UNIX)
|
2003-06-04 01:14:16 +04:00
|
|
|
nsCOMPtr<nsIFile> oldLockFile;
|
|
|
|
rv = aFile->Clone(getter_AddRefs(oldLockFile));
|
|
|
|
if (NS_SUCCEEDED(rv))
|
2003-05-02 07:59:23 +04:00
|
|
|
{
|
2003-06-04 01:14:16 +04:00
|
|
|
rv = oldLockFile->Append(OLD_LOCKFILE_NAME);
|
|
|
|
if (NS_SUCCEEDED(rv))
|
2003-05-02 07:59:23 +04:00
|
|
|
{
|
2003-06-04 01:14:16 +04:00
|
|
|
nsCAutoString filePath;
|
|
|
|
rv = oldLockFile->GetNativePath(filePath);
|
|
|
|
if (NS_SUCCEEDED(rv))
|
2003-05-02 07:59:23 +04:00
|
|
|
{
|
2003-06-04 01:14:16 +04:00
|
|
|
// First, try the 4.x-compatible symlink technique, which works
|
|
|
|
// with NFS without depending on (broken or missing, too often)
|
|
|
|
// lockd.
|
|
|
|
rv = LockWithSymlink(filePath);
|
|
|
|
if (NS_FAILED(rv) && rv != NS_ERROR_FILE_ACCESS_DENIED)
|
2003-05-02 07:59:23 +04:00
|
|
|
{
|
2003-06-04 01:14:16 +04:00
|
|
|
// If that failed with an error other than
|
|
|
|
// NS_ERROR_FILE_ACCESS_DENIED, symlinks aren't
|
|
|
|
// supported (for example, on Win32 SAMBA servers).
|
|
|
|
// Try locking with fcntl.
|
|
|
|
rv = lockFile->GetNativePath(filePath);
|
|
|
|
if (NS_SUCCEEDED(rv))
|
|
|
|
rv = LockWithFcntl(filePath);
|
2003-05-02 07:59:23 +04:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
2003-06-04 01:14:16 +04:00
|
|
|
if (NS_FAILED(rv))
|
|
|
|
return rv;
|
2003-05-02 07:59:23 +04:00
|
|
|
#endif /* XP_UNIX */
|
|
|
|
|
|
|
|
mHaveLock = PR_TRUE;
|
|
|
|
|
|
|
|
return rv;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
nsresult nsProfileLock::Unlock()
|
|
|
|
{
|
|
|
|
nsresult rv = NS_OK;
|
|
|
|
|
|
|
|
if (mHaveLock)
|
|
|
|
{
|
2003-06-04 01:14:16 +04:00
|
|
|
#if defined (XP_WIN)
|
2003-05-02 07:59:23 +04:00
|
|
|
if (mLockFileHandle != INVALID_HANDLE_VALUE)
|
|
|
|
{
|
|
|
|
CloseHandle(mLockFileHandle);
|
|
|
|
mLockFileHandle = INVALID_HANDLE_VALUE;
|
|
|
|
}
|
|
|
|
#elif defined (XP_OS2)
|
|
|
|
if (mLockFileHandle != -1)
|
|
|
|
{
|
|
|
|
DosClose(mLockFileHandle);
|
|
|
|
mLockFileHandle = -1;
|
|
|
|
}
|
|
|
|
#elif defined (XP_UNIX)
|
|
|
|
if (mPidLockFileName)
|
|
|
|
{
|
|
|
|
PR_REMOVE_LINK(this);
|
|
|
|
(void) unlink(mPidLockFileName);
|
|
|
|
free(mPidLockFileName);
|
|
|
|
mPidLockFileName = nsnull;
|
|
|
|
}
|
|
|
|
else if (mLockFileDesc != -1)
|
|
|
|
{
|
|
|
|
close(mLockFileDesc);
|
|
|
|
mLockFileDesc = -1;
|
|
|
|
// Don't remove it
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
mHaveLock = PR_FALSE;
|
|
|
|
}
|
|
|
|
|
|
|
|
return rv;
|
|
|
|
}
|