274     auto vol = VolumeManager::Instance()->findVolume(volId);  in mount()  local
275     if (vol == nullptr) {  in mount()
279     vol->setMountFlags(mountFlags);  in mount()
280     vol->setMountUserId(mountUserId);  in mount()
282     vol->setMountCallback(callback);  in mount()
283     int res = vol->mount();  in mount()
284     vol->setMountCallback(nullptr);  in mount()
298     auto vol = VolumeManager::Instance()->findVolume(volId);  in unmount()  local
299     if (vol == nullptr) {  in unmount()
302     return translate(vol->unmount());  in unmount()
310     auto vol = VolumeManager::Instance()->findVolume(volId);  in format()  local
311     if (vol == nullptr) {  in format()
314     return translate(vol->format(fsType));  in format()
321         auto vol = VolumeManager::Instance()->findVolume(volId);  in pathForVolId()  local
322         if (vol == nullptr) {  in pathForVolId()
325         if (vol->getType() != VolumeBase::Type::kPrivate) {  in pathForVolId()
328         if (vol->getState() != VolumeBase::State::kMounted) {  in pathForVolId()
331         *path = vol->getPath();  in pathForVolId()