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Fix broken safe saves across file systems

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* Fix #2888
* Qt has an undocumented rename implementation for QTemporaryFile that does not fallback to the copy implementation. Forcing the use of QFile::rename(...) allows for this fallback and protects against cross-device link errors.
This commit is contained in:
Jonathan White 2019-03-26 18:49:26 -04:00
parent 835e1b8787
commit ec82931573
1 changed files with 5 additions and 9 deletions
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14
src/core/Database.cpp
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@ -241,20 +241,16 @@ bool Database::save(const QString& filePath, QString* error, bool atomic, bool b
// Delete the original db and move the temp file in place
QFile::remove(filePath);
#ifdef Q_OS_LINUX
// workaround to make this workaround work, see: https://bugreports.qt.io/browse/QTBUG-64008
if (tempFile.copy(filePath)) {
// successfully saved database file
return true;
}
#else
if (tempFile.rename(filePath)) {
// Note: call into the QFile rename instead of QTemporaryFile
// due to an undocumented difference in how the function handles
// errors. This prevents errors when saving across file systems.
if (tempFile.QFile::rename(filePath)) {
// successfully saved database file
tempFile.setAutoRemove(false);
setFilePath(filePath);
return true;
}
#endif
}
if (error) {
*error = tempFile.errorString();