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

   1 /*
   2  * Copyright 2003-2009, Haiku, Inc. All Rights Reserved.
   3  * Distributed under the terms of the MIT License.
   4  *
   5  * Authors:
   6  *              Tomas Kucera, kucerat@centrum.cz
   7  *              Bryce Groff, brycegroff@gmail.com
   8  */
   9
  10 /*!
  11         \file PartitionMapWriter.h
  12         \ingroup intel_module
  13         \brief Implementation of disk writer for "intel" style partitions.
  14
  15         Writer can write \b Master \b Boot \b Record or \b Extended \b Boot
  16         \b Records to the disk according to partitions defined in \c PartitionMap
  17         structure.
  18 */
  19
  20
  21 #ifndef PARTITION_MAP_WRITER_H
  22 #define PARTITION_MAP_WRITER_H
  23
  24
  25 #include <SupportDefs.h>
  26
  27
  28 class PartitionMap;
  29 class LogicalPartition;
  30 class PrimaryPartition;
  31 struct partition_table;
  32
  33 bool check_logical_location(const LogicalPartition* logical,
  34         const PrimaryPartition* primary);
  35
  36 /*!
  37   \brief Writer for "Intel" style partitions.
  38
  39   This class serves for writing \a primary and \a logical \a partitions to disk.
  40 */
  41 class PartitionMapWriter {
  42 public:
  43                                                                 PartitionMapWriter(int deviceFD,
  44                                                                         uint32 blockSize);
  45                                                                 ~PartitionMapWriter();
  46
  47                         status_t                        WriteMBR(const PartitionMap* map,
  48                                                                         bool writeBootCode);
  49                         status_t                        WriteLogical(const LogicalPartition* logical,
  50                                                                         const PrimaryPartition* primary,
  51                                                                         bool clearCode);
  52                         status_t                        WriteExtendedHead(
  53                                                                         const LogicalPartition* logical,
  54                                                                         const PrimaryPartition* primary,
  55                                                                         bool clearCode);
  56
  57                         status_t                        ClearExtendedHead(
  58                                                                         const PrimaryPartition* primary);
  59
  60 private:
  61                         status_t                        _ReadBlock(off_t offset,
  62                                                                         partition_table& partitionTable);
  63                         status_t                        _WriteBlock(off_t offset,
  64                                                                         const partition_table& partitionTable);
  65
  66 private:
  67                         int                                     fDeviceFD;
  68                         int32                           fBlockSize;
  69
  70 };
  71
  72 #endif  // PARTITION_MAP_WRITER_H