113 lines
3.8 KiB
C++
113 lines
3.8 KiB
C++
/* -*- 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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*
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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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#ifndef __nsProfileLock_h___
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#define __nsProfileLock_h___
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#include "nsILocalFile.h"
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class nsIProfileUnlocker;
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#if defined (XP_WIN)
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#include <windows.h>
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#endif
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#if defined (XP_OS2)
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#define INCL_DOSERRORS
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#define INCL_DOSFILEMGR
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#include <os2.h>
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#endif
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#if defined (XP_UNIX)
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#include "prclist.h"
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#endif
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class nsProfileLock
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#if defined (XP_UNIX)
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: public PRCList
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#endif
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{
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public:
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nsProfileLock();
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nsProfileLock(nsProfileLock& src);
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~nsProfileLock();
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nsProfileLock& operator=(nsProfileLock& rhs);
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/**
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* Attempt to lock a profile directory.
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*
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* @param aProfileDir [in] The profile directory to lock.
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* @param aUnlocker [out] Optional. This is only returned when locking
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* fails with NS_ERROR_FILE_ACCESS_DENIED, and may not
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* be returned at all.
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* @throws NS_ERROR_FILE_ACCESS_DENIED if the profile is locked.
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*/
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nsresult Lock(nsILocalFile* aProfileDir, nsIProfileUnlocker* *aUnlocker);
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nsresult Unlock();
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private:
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PRPackedBool mHaveLock;
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#if defined (XP_WIN)
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HANDLE mLockFileHandle;
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#elif defined (XP_OS2)
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LHANDLE mLockFileHandle;
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#elif defined (XP_UNIX)
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static void RemovePidLockFiles();
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static void FatalSignalHandler(int signo);
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static PRCList mPidLockList;
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nsresult LockWithFcntl(const nsACString& lockFilePath);
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/**
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* @param aHaveFcntlLock if true, we've already acquired an fcntl lock so this
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* lock is merely an "obsolete" lock to keep out old Firefoxes
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*/
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nsresult LockWithSymlink(const nsACString& lockFilePath, PRBool aHaveFcntlLock);
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char* mPidLockFileName;
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int mLockFileDesc;
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#endif
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};
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#endif /* __nsProfileLock_h___ */
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