/*
 * 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