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QSaveFile: Check for EINTR in fsync()/fdatasync()

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[ChangeLog][QtCore][QSaveFile] Fixed an issue that would cause
QSaveFile::commit() to fail if Unix signals were delivered at the same
time.

Task-number: QTBUG-66268
Change-Id: I3debfc11127e4516b505fffd151148e70662cd5e
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Reviewed-by: David Faure <david.faure@kdab.com>
This commit is contained in:
Thiago Macieira 2018-02-07 23:25:06 -08:00
parent c48f4bde00
commit 4ba535616b
1 changed files with 3 additions and 2 deletions
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5
src/corelib/io/qfsfileengine_unix.cpp
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@ -180,10 +180,11 @@ bool QFSFileEnginePrivate::nativeFlush()
bool QFSFileEnginePrivate::nativeSyncToDisk()
{
Q_Q(QFSFileEngine);
int ret;
#if defined(_POSIX_SYNCHRONIZED_IO) && _POSIX_SYNCHRONIZED_IO > 0
const int ret = fdatasync(nativeHandle());
EINTR_LOOP(ret, fdatasync(nativeHandle()));
#else
const int ret = fsync(nativeHandle());
EINTR_LOOP(ret, fsync(nativeHandle()));
#endif
if (ret != 0)
q->setError(QFile::WriteError, qt_error_string(errno));