src/add-ons/kernel/partitioning_systems/intel/PartitionMapParser.h

   1 /*
   2  * Copyright 2003-2009, Haiku, Inc. All Rights Reserved.
   3  * Distributed under the terms of the MIT License.
   4  *
   5  * Authors:
   6  *              Ingo Weinhold, bonefish@cs.tu-berlin.de
   7  */
   8
   9 /*!     \file PartitionMapParser.h
  10         \brief Implementation of disk parser for "intel" style partitions.
  11
  12         Parser reads primary and logical partitions from the disk (according to
  13         Master Boot and Extended Boot Records) and fills \c PartitionMap structure
  14         with partition representation.
  15 */
  16 #ifndef PARTITION_MAP_PARSER_H
  17 #define PARTITION_MAP_PARSER_H
  18
  19
  20 #include <SupportDefs.h>
  21
  22
  23 class Partition;
  24 class PartitionMap;
  25 class PrimaryPartition;
  26 struct partition_table;
  27
  28 class PartitionMapParser {
  29 public:
  30                                                                 PartitionMapParser(int deviceFD,
  31                                                                         off_t sessionOffset, off_t sessionSize,
  32                                                                         uint32 blockSize);
  33                                                                 ~PartitionMapParser();
  34
  35                         status_t                        Parse(const uint8* block, PartitionMap* map);
  36
  37                         int32                           CountPartitions() const;
  38                         const Partition*        PartitionAt(int32 index) const;
  39
  40 private:
  41                         status_t                        _ParsePrimary(const partition_table* table,
  42                                                                         bool& hadToReFitSize);
  43                         status_t                        _ParseExtended(PrimaryPartition* primary,
  44                                                                         off_t offset);
  45                         status_t                        _ReadPartitionTable(off_t offset,
  46                                                                         partition_table* table = NULL);
  47
  48 private:
  49                         int                                     fDeviceFD;
  50                         uint32                          fBlockSize;
  51                         off_t                           fSessionOffset;
  52                         off_t                           fSessionSize;
  53                         partition_table*        fPartitionTable;        // while parsing
  54                         PartitionMap*           fMap;
  55 };
  56
  57 #endif  // PARTITION_MAP_PARSER_H