To cover the situation that the process ID got reused, the current
process name is compared to the name of the process that corresponds
to the process ID from the lock file.
If the process names differ, the lock file is considered stale.
[ChangeLog][QtCore][QLockFile] Detection of stale lock files got more
robust and takes the name of the process that belongs to the stored
PID into account.
Task-number: QTBUG-45497
Change-Id: Ic3c0d7e066435451203e77b9b9ce2d70bfb9c570
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>
Reviewed-by: David Faure <david.faure@kdab.com>
Return QLockFile::PermissionError when file does not exist, preventing
the stale file detection logic from triggering.
Add Windows-only autotest trying to create a lock file in
a system folder guarded with checks for elevated processes
and UAC virtualization.
Task-number: QTBUG-45631
Change-Id: I1790f8f925660f6bf1df94c2ced901e6ec57cbb0
Reviewed-by: Joerg Bornemann <joerg.bornemann@theqtcompany.com>
Reviewed-by: Oliver Wolff <oliver.wolff@theqtcompany.com>
[ChangeLog][QtCore][QLockFile] Fixed a deadlock when the lock file
is corrupted.
Task-number: QTBUG-44771
Change-Id: Ic490b09d70ff1cc1733b64949889a73720b2d0f3
Reviewed-by: David Faure <david.faure@kdab.com>
Qt copyrights are now in The Qt Company, so we could update the source
code headers accordingly. In the same go we should also fix the links to
point to qt.io.
Outdated header.LGPL removed (use header.LGPL21 instead)
Old header.LGPL3 renamed to header.LGPL3-COMM to match actual licensing
combination. New header.LGPL-COMM taken in the use file which were
using old header.LGPL3 (src/plugins/platforms/android/extract.cpp)
Added new header.LGPL3 containing Commercial + LGPLv3 + GPLv2 license
combination
Change-Id: I6f49b819a8a20cc4f88b794a8f6726d975e8ffbe
Reviewed-by: Matti Paaso <matti.paaso@theqtcompany.com>
Instead of leaking the QLockFile instance, which causes
leak-checkers to emit false positives, simply call exit(),
which doesn't run the destructors, yet doesn't lead to
leak-checker warnings.
Change-Id: Ia61010671e5218ae412e2bcf873e66255a2c5a99
Reviewed-by: David Faure <david.faure@kdab.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
This test requires building a console application first, deploying
this as part of the APK and then being able to execute the
bundled file from the main application. Since IPC is a limited
use case on Android, we just skip this test instead.
Change-Id: Ie68e495ff64b69e7027924291a411b5de0e2da76
Reviewed-by: BogDan Vatra <bogdan@kde.org>
A "sharing violation" happens when trying to delete the lock file and another
thread/process is reading it at that very moment. Detect the error and try again,
up to 10000 times - to avoid an infinite loop if QFile::remove fails for another
reason such as a sudden change of permissions preventing us from deleting our
own lock file.
On Unix the deletion can't fail because of readers, but it doesn't hurt
to check the return value there too, to catch other reasons for failures
such as a sudden permission change.
Task-number: QTBUG-38853
Change-Id: Icf12a74faed4a4916e3427abc09d9c33aa141476
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
QLockFile "noPermissions" test is not applicable with root
privileges.
Change-Id: I5779da524f24d0f1b9ef519d654856a6200da6bf
Reviewed-by: David Faure <david.faure@kdab.com>
A handful of tests lack QT_NO_PROCESS guards, making them non-compilable
on Qt builds with no QProcess support. This commit does not change
QProcess-specific tests, which should be left out of the build using the
.pro file mechanism.
Change-Id: Iac8562428abc1f59ccbb23bf5c3a919785e41f12
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
OpenProcess + WaitForSingleObject is supposed to fail after the process exits,
but this seems to take some time until Windows notices.
Change-Id: I942a9b4a458c23fc4ac33b28386e28821128e991
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Locking between processes, implemented with open(O_EXCL) on Unix
and CreateFile(CREATE_NEW) on Windows.
Supports detecting stale lock files and deleting them.
Advisory locking is used to prevent deletion of files that are still in use.
Change-Id: Id00ee2a4e77a29483d869037c7047c59cb909339
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
