src/add-ons/kernel/file_systems/udf/MetadataPartition.h

   1 /*
   2  * Copyright 2012, Jérôme Duval, korli@users.berlios.de.
   3  * Copyright 2003 Tyler Dauwalder, tyler@dauwalder.net
   4  * This file may be used under the terms of the MIT License.
   5  */
   6 #ifndef _UDF_METADATA_PARTITION_H
   7 #define _UDF_METADATA_PARTITION_H
   8
   9 /*! \file MetadataPartition.h
  10 */
  11
  12 #include <util/kernel_cpp.h>
  13
  14 #include "UdfDebug.h"
  15 #include "Volume.h"
  16
  17
  18 /*! \brief Type 2 metadata partition
  19
  20         Metadata partitions allow for clustering of metadata (ICBs, directory
  21         contents, etc.) and also provide the option of metadata duplication.
  22
  23         See also UDF-2.50 2.2.10, UDF-2.50 2.2.13
  24 */
  25 class MetadataPartition : public Partition {
  26 public:
  27         MetadataPartition(Volume *volume, uint16 partition, Partition &parentPartition,
  28                         uint32 metadataFileLocation, uint32 metadataMirrorFileLocation,
  29                         uint32 metadataBitmapFileLocation, uint32 allocationUnitSize,
  30                         uint16 alignmentUnitSize, bool metadataIsDuplicated);
  31         virtual ~MetadataPartition();
  32         virtual status_t MapBlock(uint32 logicalBlock, off_t &physicalBlock);
  33
  34         status_t InitCheck();
  35
  36         uint32 AllocationUnitSize() const { return fAllocationUnitSize; }
  37         uint16 AlignmentUnitSize() const { return fAlignmentUnitSize; }
  38         uint32 MetadataIsDuplicated() const { return fMetadataIsDuplicated; }
  39 private:
  40         uint16 fPartition;
  41         Partition &fParentPartition;
  42         uint32 fAllocationUnitSize;
  43         uint16 fAlignmentUnitSize;
  44         bool fMetadataIsDuplicated;
  45         status_t fInitStatus;
  46         Icb     *fMetadataIcb;
  47         Icb     *fMetadataMirrorIcb;
  48 };
  49
  50 #endif  // _UDF_METADATA_PARTITION_H