/*
 * Copyright 2012, Jérôme Duval, korli@users.berlios.de.
 * Copyright 2003 Tyler Dauwalder, tyler@dauwalder.net
 * This file may be used under the terms of the MIT License.
 */
#ifndef _UDF_METADATA_PARTITION_H
#define _UDF_METADATA_PARTITION_H

/*! \file MetadataPartition.h
*/

#include <util/kernel_cpp.h>

#include "UdfDebug.h"
#include "Volume.h"


/*! \brief Type 2 metadata partition

	Metadata partitions allow for clustering of metadata (ICBs, directory
	contents, etc.) and also provide the option of metadata duplication.
	
	See also UDF-2.50 2.2.10, UDF-2.50 2.2.13
*/
class MetadataPartition : public Partition {
public:
	MetadataPartition(Volume *volume, uint16 partition, Partition &parentPartition, 
			uint32 metadataFileLocation, uint32 metadataMirrorFileLocation,
			uint32 metadataBitmapFileLocation, uint32 allocationUnitSize,
			uint16 alignmentUnitSize, bool metadataIsDuplicated);
	virtual ~MetadataPartition();
	virtual status_t MapBlock(uint32 logicalBlock, off_t &physicalBlock);
	
	status_t InitCheck();

	uint32 AllocationUnitSize() const { return fAllocationUnitSize; }
	uint16 AlignmentUnitSize() const { return fAlignmentUnitSize; }
	uint32 MetadataIsDuplicated() const { return fMetadataIsDuplicated; }
private:
	uint16 fPartition;
	Partition &fParentPartition;
	uint32 fAllocationUnitSize;
	uint16 fAlignmentUnitSize;
	bool fMetadataIsDuplicated;
	status_t fInitStatus;
	Icb	*fMetadataIcb;
	Icb	*fMetadataMirrorIcb;
};

#endif	// _UDF_METADATA_PARTITION_H