bool QFSFileEngine::setSize(qint64 size)
{
Q_D(QFSFileEngine);
bool ret = false;
if (d->fd != -1)
ret = QT_FTRUNCATE(d->fd, size) == 0;
else if (d->fh)
ret = QT_FTRUNCATE(QT_FILENO(d->fh), size) == 0;
else
ret = QT_TRUNCATE(d->fileEntry.nativeFilePath().constData(), size) == 0;
if (!ret)
setError(QFile::ResizeError, qt_error_string(errno));
return ret;
}
bool QFSFileEngine::setSize(qint64 size)
{
Q_D(QFSFileEngine);
if (d->fd != -1)
return !QT_FTRUNCATE(d->fd, size);
return !QT_TRUNCATE(d->nativeFilePath.constData(), size);
}
bool QFSFileEngine::setSize(qint64 size)
{
Q_D(QFSFileEngine);
bool ret = false;
TInt err = KErrNone;
if (d->symbianFile.SubSessionHandle()) {
TInt err = d->symbianFile.SetSize(size);
ret = (err == KErrNone);
if (ret && d->symbianFilePos > size)
d->symbianFilePos = size;
}
else if (d->fd != -1)
ret = QT_FTRUNCATE(d->fd, size) == 0;
else if (d->fh)
ret = QT_FTRUNCATE(QT_FILENO(d->fh), size) == 0;
else {
RFile tmp;
QString symbianFilename(d->fileEntry.nativeFilePath());
err = tmp.Open(qt_s60GetRFs(), qt_QString2TPtrC(symbianFilename), EFileWrite);
if (err == KErrNone)
{
err = tmp.SetSize(size);
tmp.Close();
}
ret = (err == KErrNone);
}
if (!ret) {
QSystemError error;
if (err)
error = QSystemError(err, QSystemError::NativeError);
else
error = QSystemError(errno, QSystemError::StandardLibraryError);
setError(QFile::ResizeError, error.toString());
}
return ret;
}
bool QSharedMemoryPrivate::create(int size)
{
if (!handle())
return false;
const QByteArray shmName = QFile::encodeName(makePlatformSafeKey(key));
int fd;
#ifdef O_CLOEXEC
// First try with O_CLOEXEC flag, if that fails, fall back to normal flags
EINTR_LOOP(fd, ::shm_open(shmName.constData(), O_RDWR | O_CREAT | O_EXCL | O_CLOEXEC, 0600));
if (fd == -1)
EINTR_LOOP(fd, ::shm_open(shmName.constData(), O_RDWR | O_CREAT | O_EXCL, 0600));
#else
EINTR_LOOP(fd, ::shm_open(shmName.constData(), O_RDWR | O_CREAT | O_EXCL, 0600));
#endif
if (fd == -1) {
const int errorNumber = errno;
const QLatin1String function("QSharedMemory::attach (shm_open)");
switch (errorNumber) {
case ENAMETOOLONG:
case EINVAL:
errorString = QSharedMemory::tr("%1: bad name").arg(function);
error = QSharedMemory::KeyError;
break;
default:
setErrorString(function);
}
return false;
}
// the size may only be set once
int ret;
EINTR_LOOP(ret, QT_FTRUNCATE(fd, size));
if (ret == -1) {
setErrorString(QLatin1String("QSharedMemory::create (ftruncate)"));
qt_safe_close(fd);
return false;
}
qt_safe_close(fd);
return true;
}
