Esempio n. 1
0
status_t
_user_move_partition(partition_id partitionID, int32* changeCounter,
	partition_id childID, int32* childChangeCounter, off_t newOffset,
	partition_id* descendantIDs, int32* descendantChangeCounters,
	int32 descendantCount)
{
#if 0
	KDiskDeviceManager *manager = KDiskDeviceManager::Default();
	// get the partition
	KPartition *partition = manager->WriteLockPartition(partitionID);
	if (!partition)
		return B_ENTRY_NOT_FOUND;
	PartitionRegistrar registrar1(partition, true);
	PartitionRegistrar registrar2(partition->Device(), true);
	DeviceWriteLocker locker(partition->Device(), true);
	// check the new offset
	if (newOffset == partition->Offset())
		return B_OK;
	off_t proposedOffset = newOffset;
	status_t error = validate_move_partition(partition, changeCounter,
		&proposedOffset, true);
	if (error != B_OK)
		return error;
	if (proposedOffset != newOffset)
		return B_BAD_VALUE;
	// new offset is fine -- move the thing
	off_t moveBy = newOffset - partition->Offset();
	move_descendants(partition, moveBy);
	partition->Changed(B_PARTITION_CHANGED_OFFSET);
	// implicit partitioning system changes
	error = partition->Parent()->DiskSystem()->ShadowPartitionChanged(
		partition->Parent(), partition, B_PARTITION_MOVE_CHILD);
	if (error != B_OK)
		return error;
	// implicit descendants' content disk system changes
	return move_descendants_contents(partition);
#endif
return B_BAD_VALUE;
}
Esempio n. 2
0
status_t
_user_set_partition_parameters(partition_id partitionID, int32* _changeCounter,
	partition_id childID, int32* _childChangeCounter, const char* _parameters)
{
	// copy parameters in
	UserStringParameter<true> parameters;
	int32 changeCounter;
	int32 childChangeCounter;

	status_t error
		= parameters.Init(_parameters, B_DISK_DEVICE_MAX_PARAMETER_SIZE);
	if (error == B_OK)
		error = copy_from_user_value(changeCounter, _changeCounter);
	if (error == B_OK)
		error = copy_from_user_value(childChangeCounter, _childChangeCounter);
	if (error != B_OK)
		return error;

	// get the partition
	KDiskDeviceManager* manager = KDiskDeviceManager::Default();
	KPartition* partition = manager->WriteLockPartition(partitionID);
	if (partition == NULL)
		return B_ENTRY_NOT_FOUND;

	PartitionRegistrar registrar1(partition, true);
	PartitionRegistrar registrar2(partition->Device(), true);
	DeviceWriteLocker locker(partition->Device(), true);

	// register child
	KPartition* child = manager->RegisterPartition(childID);
	if (child == NULL)
		return B_ENTRY_NOT_FOUND;

	PartitionRegistrar registrar3(child, true);

	// check change counters
	if (changeCounter != partition->ChangeCounter()
		|| childChangeCounter != child->ChangeCounter()) {
		return B_BAD_VALUE;
	}

	// the partition must be initialized
	KDiskSystem* diskSystem = partition->DiskSystem();
	if (diskSystem == NULL)
		return B_BAD_VALUE;

	// child must indeed be a child of partition
	if (child->Parent() != partition)
		return B_BAD_VALUE;

	// mark the partition busy and unlock
	if (partition->IsBusy() || child->IsBusy())
		return B_BUSY;
	partition->SetBusy(true);
	child->SetBusy(true);
	locker.Unlock();

	// set the child parameters
	error = diskSystem->SetParameters(child, parameters.value, DUMMY_JOB_ID);

	// re-lock and unmark busy
	locker.Lock();
	partition->SetBusy(false);
	child->SetBusy(false);

	if (error != B_OK)
		return error;

	// return change counters
	error = copy_to_user_value(_changeCounter, partition->ChangeCounter());
	if (error == B_OK)
		error = copy_to_user_value(_childChangeCounter, child->ChangeCounter());
	return error;
}
Esempio n. 3
0
status_t
_user_delete_child_partition(partition_id partitionID, int32* _changeCounter,
	partition_id childID, int32 childChangeCounter)
{
	// copy parameters in
	int32 changeCounter;

	status_t error;
	if ((error = copy_from_user_value(changeCounter, _changeCounter)) != B_OK)
		return error;

	// get the partition
	KDiskDeviceManager* manager = KDiskDeviceManager::Default();
	KPartition* partition = manager->WriteLockPartition(partitionID);
	if (partition == NULL)
		return B_ENTRY_NOT_FOUND;

	PartitionRegistrar registrar1(partition, true);
	PartitionRegistrar registrar2(partition->Device(), true);
	DeviceWriteLocker locker(partition->Device(), true);

	// register child
	KPartition* child = manager->RegisterPartition(childID);
	if (child == NULL)
		return B_ENTRY_NOT_FOUND;

	PartitionRegistrar registrar3(child, true);

	// check change counters
	if (changeCounter != partition->ChangeCounter()
		|| childChangeCounter != child->ChangeCounter()) {
		return B_BAD_VALUE;
	}

	// the partition must be initialized
	KDiskSystem* diskSystem = partition->DiskSystem();
	if (diskSystem == NULL)
		return B_BAD_VALUE;

	// child must indeed be a child of partition
	if (child->Parent() != partition)
		return B_BAD_VALUE;

	// mark the partition and child busy and unlock
	if (partition->IsBusy() || !child->CheckAndMarkBusy(true))
		return B_BUSY;
	partition->SetBusy(true);
	locker.Unlock();

	// delete the child
	error = diskSystem->DeleteChild(child, DUMMY_JOB_ID);

	// re-lock and unmark busy
	locker.Lock();
	partition->SetBusy(false);
	child->UnmarkBusy(true);

	if (error != B_OK)
		return error;

	// return change counter
	return copy_to_user_value(_changeCounter, partition->ChangeCounter());
}
Esempio n. 4
0
status_t
_user_resize_partition(partition_id partitionID, int32* _changeCounter,
	partition_id childID, int32* _childChangeCounter, off_t size,
	off_t contentSize)
{
	// copy parameters in
	int32 changeCounter;
	int32 childChangeCounter;

	status_t error = copy_from_user_value(changeCounter, _changeCounter);
	if (error == B_OK)
		error = copy_from_user_value(childChangeCounter, _childChangeCounter);
	if (error != B_OK)
		return error;

	// get the partition
	KDiskDeviceManager* manager = KDiskDeviceManager::Default();
	KPartition* partition = manager->WriteLockPartition(partitionID);
	if (partition == NULL)
		return B_ENTRY_NOT_FOUND;

	PartitionRegistrar registrar1(partition, true);
	PartitionRegistrar registrar2(partition->Device(), true);
	DeviceWriteLocker locker(partition->Device(), true);

	// register child
	KPartition* child = manager->RegisterPartition(childID);
	if (child == NULL)
		return B_ENTRY_NOT_FOUND;

	PartitionRegistrar registrar3(child, true);

	// check change counters
	if (changeCounter != partition->ChangeCounter()
		|| childChangeCounter != child->ChangeCounter()) {
		return B_BAD_VALUE;
	}

	// the partition must be initialized
	KDiskSystem* diskSystem = partition->DiskSystem();
	if (diskSystem == NULL)
		return B_BAD_VALUE;

	// child must indeed be a child of partition
	if (child->Parent() != partition)
		return B_BAD_VALUE;

	// check sizes
	if (size < 0 || contentSize < 0 || size < contentSize
		|| size > partition->ContentSize()) {
		return B_BAD_VALUE;
	}

	// mark the partitions busy and unlock
	if (partition->IsBusy() || child->IsBusy())
		return B_BUSY;
	partition->SetBusy(true);
	child->SetBusy(true);
	locker.Unlock();

	// resize contents first, if shrinking
	if (child->DiskSystem() && contentSize < child->ContentSize())
		error = child->DiskSystem()->Resize(child, contentSize, DUMMY_JOB_ID);

	// resize the partition
	if (error == B_OK && size != child->Size())
		error = diskSystem->ResizeChild(child, size, DUMMY_JOB_ID);

	// resize contents last, if growing
	if (error == B_OK && child->DiskSystem()
		&& contentSize > child->ContentSize()) {
		error = child->DiskSystem()->Resize(child, contentSize, DUMMY_JOB_ID);
	}

	// re-lock and unmark busy
	locker.Lock();
	partition->SetBusy(false);
	child->SetBusy(false);

	if (error != B_OK)
		return error;

	// return change counters
	error = copy_to_user_value(_changeCounter, partition->ChangeCounter());
	if (error == B_OK)
		error = copy_to_user_value(_childChangeCounter, child->ChangeCounter());
	return error;
}
Esempio n. 5
0
status_t
_user_set_partition_name(partition_id partitionID, int32* _changeCounter,
	partition_id childID, int32* _childChangeCounter, const char* _name)
{
	// copy parameters in
	UserStringParameter<false> name;
	int32 changeCounter;
	int32 childChangeCounter;

	status_t error;
	if ((error = name.Init(_name, B_DISK_DEVICE_NAME_LENGTH)) != B_OK
		|| (error = copy_from_user_value(changeCounter, _changeCounter))
			!= B_OK
		|| (error = copy_from_user_value(childChangeCounter,
			_childChangeCounter)) != B_OK) {
		return error;
	}

	// get the partition
	KDiskDeviceManager* manager = KDiskDeviceManager::Default();
	KPartition* partition = manager->WriteLockPartition(partitionID);
	if (!partition)
		return B_ENTRY_NOT_FOUND;

	PartitionRegistrar registrar1(partition, true);
	PartitionRegistrar registrar2(partition->Device(), true);
	DeviceWriteLocker locker(partition->Device(), true);

	// register child
	KPartition* child = manager->RegisterPartition(childID);
	if (!child)
		return B_ENTRY_NOT_FOUND;

	PartitionRegistrar registrar3(child, true);

	// check change counters
	if (changeCounter != partition->ChangeCounter()
		|| childChangeCounter != child->ChangeCounter()) {
		return B_BAD_VALUE;
	}

	// the partition must be initialized
	KDiskSystem* diskSystem = partition->DiskSystem();
	if (!diskSystem)
		return B_BAD_VALUE;

	// child must indeed be a child of partition
	if (child->Parent() != partition)
		return B_BAD_VALUE;

	// mark the partitions busy and unlock
	if (partition->IsBusy() || child->IsBusy())
		return B_BUSY;
	partition->SetBusy(true);
	child->SetBusy(true);
	locker.Unlock();

	// set the child name
	error = diskSystem->SetName(child, name.value, DUMMY_JOB_ID);

	// re-lock and unmark busy
	locker.Lock();
	partition->SetBusy(false);
	child->SetBusy(false);

	if (error != B_OK)
		return error;

	// return change counters
	if ((error = copy_to_user_value(_changeCounter, partition->ChangeCounter()))
			!= B_OK
		|| (error = copy_to_user_value(_childChangeCounter,
			child->ChangeCounter())) != B_OK) {
		return error;
	}

	return B_OK;
}