profile/dirserviceprovider/src/nsProfileLock.h@97036ab72558 (annotated)
profile/dirserviceprovider/src/nsProfileLock.h
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ |
| michael@0 | 2 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | #ifndef __nsProfileLock_h___ |
| michael@0 | 7 | #define __nsProfileLock_h___ |
| michael@0 | 8 | |
| michael@0 | 9 | #include "nsIFile.h" |
| michael@0 | 10 | |
| michael@0 | 11 | class nsIProfileUnlocker; |
| michael@0 | 12 | |
| michael@0 | 13 | #if defined (XP_WIN) |
| michael@0 | 14 | #include <windows.h> |
| michael@0 | 15 | #endif |
| michael@0 | 16 | |
| michael@0 | 17 | #if defined (XP_UNIX) |
| michael@0 | 18 | #include <signal.h> |
| michael@0 | 19 | #include "prclist.h" |
| michael@0 | 20 | #endif |
| michael@0 | 21 | |
| michael@0 | 22 | class nsProfileLock |
| michael@0 | 23 | #if defined (XP_UNIX) |
| michael@0 | 24 | : public PRCList |
| michael@0 | 25 | #endif |
| michael@0 | 26 | { |
| michael@0 | 27 | public: |
| michael@0 | 28 | nsProfileLock(); |
| michael@0 | 29 | nsProfileLock(nsProfileLock& src); |
| michael@0 | 30 | |
| michael@0 | 31 | ~nsProfileLock(); |
| michael@0 | 32 | |
| michael@0 | 33 | nsProfileLock& operator=(nsProfileLock& rhs); |
| michael@0 | 34 | |
| michael@0 | 35 | /** |
| michael@0 | 36 | * Attempt to lock a profile directory. |
| michael@0 | 37 | * |
| michael@0 | 38 | * @param aProfileDir [in] The profile directory to lock. |
| michael@0 | 39 | * @param aUnlocker [out] Optional. This is only returned when locking |
| michael@0 | 40 | * fails with NS_ERROR_FILE_ACCESS_DENIED, and may not |
| michael@0 | 41 | * be returned at all. |
| michael@0 | 42 | * @throws NS_ERROR_FILE_ACCESS_DENIED if the profile is locked. |
| michael@0 | 43 | */ |
| michael@0 | 44 | nsresult Lock(nsIFile* aProfileDir, nsIProfileUnlocker* *aUnlocker); |
| michael@0 | 45 | |
| michael@0 | 46 | /** |
| michael@0 | 47 | * Unlock a profile directory. If you're unlocking the directory because |
| michael@0 | 48 | * the application is in the process of shutting down because of a fatal |
| michael@0 | 49 | * signal, set aFatalSignal to true. |
| michael@0 | 50 | */ |
| michael@0 | 51 | nsresult Unlock(bool aFatalSignal = false); |
| michael@0 | 52 | |
| michael@0 | 53 | /** |
| michael@0 | 54 | * Get the modification time of a replaced profile lock, otherwise 0. |
| michael@0 | 55 | */ |
| michael@0 | 56 | nsresult GetReplacedLockTime(PRTime* aResult); |
| michael@0 | 57 | |
| michael@0 | 58 | private: |
| michael@0 | 59 | bool mHaveLock; |
| michael@0 | 60 | PRTime mReplacedLockTime; |
| michael@0 | 61 | |
| michael@0 | 62 | #if defined (XP_WIN) |
| michael@0 | 63 | HANDLE mLockFileHandle; |
| michael@0 | 64 | #elif defined (XP_UNIX) |
| michael@0 | 65 | |
| michael@0 | 66 | struct RemovePidLockFilesExiting { |
| michael@0 | 67 | RemovePidLockFilesExiting() {} |
| michael@0 | 68 | ~RemovePidLockFilesExiting() { |
| michael@0 | 69 | RemovePidLockFiles(false); |
| michael@0 | 70 | } |
| michael@0 | 71 | }; |
| michael@0 | 72 | |
| michael@0 | 73 | static void RemovePidLockFiles(bool aFatalSignal); |
| michael@0 | 74 | static void FatalSignalHandler(int signo |
| michael@0 | 75 | #ifdef SA_SIGINFO |
| michael@0 | 76 | , siginfo_t *info, void *context |
| michael@0 | 77 | #endif |
| michael@0 | 78 | ); |
| michael@0 | 79 | static PRCList mPidLockList; |
| michael@0 | 80 | |
| michael@0 | 81 | nsresult LockWithFcntl(nsIFile *aLockFile); |
| michael@0 | 82 | |
| michael@0 | 83 | /** |
| michael@0 | 84 | * @param aHaveFcntlLock if true, we've already acquired an fcntl lock so this |
| michael@0 | 85 | * lock is merely an "obsolete" lock to keep out old Firefoxes |
| michael@0 | 86 | */ |
| michael@0 | 87 | nsresult LockWithSymlink(nsIFile *aLockFile, bool aHaveFcntlLock); |
| michael@0 | 88 | |
| michael@0 | 89 | char* mPidLockFileName; |
| michael@0 | 90 | int mLockFileDesc; |
| michael@0 | 91 | #endif |
| michael@0 | 92 | |
| michael@0 | 93 | }; |
| michael@0 | 94 | |
| michael@0 | 95 | #endif /* __nsProfileLock_h___ */ |
