/*!
Convenience function that attempts to unlock the file with identifier \a id that was locked by \c QMail::fileLock.
Returns \c true for success or \c false otherwise.
\sa QMail::fileLock()
*/
bool QMail::fileUnlock(int id)
{
#ifdef Q_OS_WIN
QMap<int, HANDLE>::iterator it = lockedFiles.find(id);
if (it != lockedFiles.end()) {
if (::UnlockFile(it.value(), 0, 0, 1, 0) == FALSE) {
qWarning() << "Unable to unlock file:" << lastSystemErrorMessage();
} else {
if (::CloseHandle(it.value()) == FALSE) {
qWarning() << "Unable to close handle:" << lastSystemErrorMessage();
}
lockedFiles.erase(it);
return true;
}
}
return false;
#else
int result = -1;
result = ::close(id);
if (result == -1)
return false;
return true;
#endif
}
/*!
Convenience function that attempts to unlock the file with identifier \a id that was locked by \c QMail::fileLock.
Returns \c true for success or \c false otherwise.
\sa QMail::fileLock()
*/
bool QMail::fileUnlock(int id)
{
#ifdef Q_OS_WIN
QMap<int, HANDLE>::iterator it = lockedFiles.find(id);
if (it != lockedFiles.end()) {
if (::UnlockFile(it.value(), 0, 0, 1, 0) == FALSE) {
qWarning() << "Unable to unlock file:" << lastSystemErrorMessage();
} else {
if (::CloseHandle(it.value()) == FALSE) {
qWarning() << "Unable to close handle:" << lastSystemErrorMessage();
}
lockedFiles.erase(it);
return true;
}
}
return false;
#else
struct flock fl;
fl.l_type = F_UNLCK;
fl.l_whence = SEEK_SET;
fl.l_start = 0;
fl.l_len = 0;
int result = -1;
if((result = ::fcntl(id,F_SETLK, &fl)) == -1)
return false;
if((result = ::close(id)) == -1)
return false;
return true;
#endif
}
