netfs/client/VolumeManager.cpp

25 		: fLock("volume event queue"),
28 		fCounterSem = create_sem(0, "volume event count");
101 	: Locker("volume manager"),
134 	const char* parameters, int32 len, Volume** volume)
166 	// create the volume event queue
177 			"volume event deliverer", B_NORMAL_PRIORITY, this);
180 			"volume event deliverer", B_NORMAL_PRIORITY, this);
185 	// create the root volume
196 	// add the root volume
203 	// mount the root volume
212 	*volume = rootVolume;
229 			"root volume!\n"));
249 // The caller must have a reference to the volume and retains it.
251 VolumeManager::AddVolume(Volume* volume)
253 	if (!volume)
258 	if (fVolumes->Contains(volume))
261 	// add the volume
262 	return fVolumes->Add(volume);
270 	Volume* volume = fNodeIDs2Volumes->Get(nodeID);
271 	if (volume && GetVolume(volume))
272 		return volume;
278 VolumeManager::GetVolume(Volume* volume)
280 	if (!volume)
284 	if (fVolumes->Contains(volume)) {
286 		volume->AcquireReference();
287 		return volume;
296 VolumeManager::PutVolume(Volume* volume)
298 	if (!volume)
301 	// If the volume is marked unmounting and is not yet marked removed, we
306 //volume, volume->CountReferences()));
307 		if (volume->IsUnmounting() && !volume->IsRemoved()) {
309 //"removed and removing all nodes.\n", volume));
311 			volume->MarkRemoved();
313 			// get parent volume
314 			Volume* parentVolume = volume->GetParentVolume();
321 			volume->PrepareToUnmount();
323 			// remove from parent volume
325 				parentVolume->RemoveChildVolume(volume);
331 	// If the volume is marked removed and it's reference count drops to 0,
335 		if (volume->ReleaseReference() && volume->IsRemoved()) {
336 			PRINT("VolumeManager::PutVolume(%p): Removed volume "
337 				"unreferenced. Unmounting...\n", volume);
338 			// remove from volume set -- now noone can get a reference to it
340 			fVolumes->Remove(volume);
344 			// unmount and delete the volume
345 // TODO: At some point all the volume's node IDs have to be removed from
346 // fNodeIDs2Volumes. For the time being we expect the volume to do that itself
348 			volume->Unmount();
349 			delete volume;
356 VolumeManager::NewNodeID(Volume* volume)
358 	if (!volume)
363 	status_t error = fNodeIDs2Volumes->Put(nodeID, volume);
399 		if (Volume* volume = GetVolume(event->GetTarget())) {
400 			volume->HandleEvent(event);
401 			PutVolume(volume);