diff options
Diffstat (limited to 'apt-pkg/deb/debsystem.cc')
| -rw-r--r-- | apt-pkg/deb/debsystem.cc | 53 |
1 files changed, 46 insertions, 7 deletions
diff --git a/apt-pkg/deb/debsystem.cc b/apt-pkg/deb/debsystem.cc index c183ab000..11aa2cfd7 100644 --- a/apt-pkg/deb/debsystem.cc +++ b/apt-pkg/deb/debsystem.cc @@ -44,10 +44,11 @@ debSystem debSys; class APT_HIDDEN debSystemPrivate { public: - debSystemPrivate() : LockFD(-1), LockCount(0), StatusFile(0) + debSystemPrivate() : FrontendLockFD(-1), LockFD(-1), LockCount(0), StatusFile(0) { } // For locking support + int FrontendLockFD; int LockFD; unsigned LockCount; @@ -85,21 +86,29 @@ bool debSystem::Lock() // Create the lockfile string AdminDir = flNotFile(_config->FindFile("Dir::State::status")); - d->LockFD = GetLock(AdminDir + "lock"); - if (d->LockFD == -1) + string FrontendLockFile = AdminDir + "lock-frontend"; + d->FrontendLockFD = GetLock(FrontendLockFile); + if (d->FrontendLockFD == -1) { if (errno == EACCES || errno == EAGAIN) - return _error->Error(_("Unable to lock the administration directory (%s), " - "is another process using it?"),AdminDir.c_str()); + return _error->Error(_("Unable to acquire the dpkg frontend lock (%s), " + "is another process using it?"),FrontendLockFile.c_str()); else - return _error->Error(_("Unable to lock the administration directory (%s), " - "are you root?"),AdminDir.c_str()); + return _error->Error(_("Unable to acquire the dpkg frontend lock (%s), " + "are you root?"),FrontendLockFile.c_str()); + } + if (LockInner() == false) + { + close(d->FrontendLockFD); + return false; } // See if we need to abort with a dirty journal if (CheckUpdates() == true) { close(d->LockFD); + close(d->FrontendLockFD); + d->FrontendLockFD = -1; d->LockFD = -1; const char *cmd; if (getenv("SUDO_USER") != NULL) @@ -116,6 +125,21 @@ bool debSystem::Lock() return true; } + +bool debSystem::LockInner() { + string AdminDir = flNotFile(_config->FindFile("Dir::State::status")); + d->LockFD = GetLock(AdminDir + "lock"); + if (d->LockFD == -1) + { + if (errno == EACCES || errno == EAGAIN) + return _error->Error(_("Unable to lock the administration directory (%s), " + "is another process using it?"),AdminDir.c_str()); + else + return _error->Error(_("Unable to lock the administration directory (%s), " + "are you root?"),AdminDir.c_str()); + } + return true; +} /*}}}*/ // System::UnLock - Drop a lock /*{{{*/ // --------------------------------------------------------------------- @@ -129,12 +153,27 @@ bool debSystem::UnLock(bool NoErrors) return _error->Error(_("Not locked")); if (--d->LockCount == 0) { + close(d->FrontendLockFD); close(d->LockFD); d->LockCount = 0; } return true; } +bool debSystem::UnLockInner(bool NoErrors) { + (void) NoErrors; + close(d->LockFD); + return true; +} + /*}}}*/ +// System::IsLocked - Check if system is locked /*{{{*/ +// --------------------------------------------------------------------- +/* This checks if the frontend lock is hold. The inner lock might be + * released. */ +bool debSystem::IsLocked() +{ + return d->LockCount > 0; +} /*}}}*/ // System::CheckUpdates - Check if the updates dir is dirty /*{{{*/ // --------------------------------------------------------------------- |