1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/profile/dirserviceprovider/src/nsProfileLock.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,95 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#ifndef __nsProfileLock_h___
1.10 +#define __nsProfileLock_h___
1.11 +
1.12 +#include "nsIFile.h"
1.13 +
1.14 +class nsIProfileUnlocker;
1.15 +
1.16 +#if defined (XP_WIN)
1.17 +#include <windows.h>
1.18 +#endif
1.19 +
1.20 +#if defined (XP_UNIX)
1.21 +#include <signal.h>
1.22 +#include "prclist.h"
1.23 +#endif
1.24 +
1.25 +class nsProfileLock
1.26 +#if defined (XP_UNIX)
1.27 + : public PRCList
1.28 +#endif
1.29 +{
1.30 +public:
1.31 + nsProfileLock();
1.32 + nsProfileLock(nsProfileLock& src);
1.33 +
1.34 + ~nsProfileLock();
1.35 +
1.36 + nsProfileLock& operator=(nsProfileLock& rhs);
1.37 +
1.38 + /**
1.39 + * Attempt to lock a profile directory.
1.40 + *
1.41 + * @param aProfileDir [in] The profile directory to lock.
1.42 + * @param aUnlocker [out] Optional. This is only returned when locking
1.43 + * fails with NS_ERROR_FILE_ACCESS_DENIED, and may not
1.44 + * be returned at all.
1.45 + * @throws NS_ERROR_FILE_ACCESS_DENIED if the profile is locked.
1.46 + */
1.47 + nsresult Lock(nsIFile* aProfileDir, nsIProfileUnlocker* *aUnlocker);
1.48 +
1.49 + /**
1.50 + * Unlock a profile directory. If you're unlocking the directory because
1.51 + * the application is in the process of shutting down because of a fatal
1.52 + * signal, set aFatalSignal to true.
1.53 + */
1.54 + nsresult Unlock(bool aFatalSignal = false);
1.55 +
1.56 + /**
1.57 + * Get the modification time of a replaced profile lock, otherwise 0.
1.58 + */
1.59 + nsresult GetReplacedLockTime(PRTime* aResult);
1.60 +
1.61 +private:
1.62 + bool mHaveLock;
1.63 + PRTime mReplacedLockTime;
1.64 +
1.65 +#if defined (XP_WIN)
1.66 + HANDLE mLockFileHandle;
1.67 +#elif defined (XP_UNIX)
1.68 +
1.69 + struct RemovePidLockFilesExiting {
1.70 + RemovePidLockFilesExiting() {}
1.71 + ~RemovePidLockFilesExiting() {
1.72 + RemovePidLockFiles(false);
1.73 + }
1.74 + };
1.75 +
1.76 + static void RemovePidLockFiles(bool aFatalSignal);
1.77 + static void FatalSignalHandler(int signo
1.78 +#ifdef SA_SIGINFO
1.79 + , siginfo_t *info, void *context
1.80 +#endif
1.81 + );
1.82 + static PRCList mPidLockList;
1.83 +
1.84 + nsresult LockWithFcntl(nsIFile *aLockFile);
1.85 +
1.86 + /**
1.87 + * @param aHaveFcntlLock if true, we've already acquired an fcntl lock so this
1.88 + * lock is merely an "obsolete" lock to keep out old Firefoxes
1.89 + */
1.90 + nsresult LockWithSymlink(nsIFile *aLockFile, bool aHaveFcntlLock);
1.91 +
1.92 + char* mPidLockFileName;
1.93 + int mLockFileDesc;
1.94 +#endif
1.95 +
1.96 +};
1.97 +
1.98 +#endif /* __nsProfileLock_h___ */
