rom/partition/partitionmbr.h

   1 #ifndef PARTITIONMBR_H
   2 #define PARTITIONMBR_H
   3
   4 /*
   5     Copyright © 2007-2017, The AROS Development Team. All rights reserved.
   6     $Id$
   7 */
   8
   9 #include <exec/types.h>
  10 #include <libraries/partition.h>
  11
  12 #include "partition_intern.h"
  13
  14 struct PCPartitionTable {
  15    UBYTE status;
  16    UBYTE start_head;
  17    UBYTE start_sector;
  18    UBYTE start_cylinder;
  19    UBYTE type;
  20    UBYTE end_head;
  21    UBYTE end_sector;
  22    UBYTE end_cylinder;
  23    ULONG first_sector;
  24    ULONG count_sector;
  25 } __attribute__((packed));
  26
  27 struct MBR {
  28    BYTE boot_data[0x1BE];
  29    struct PCPartitionTable pcpt[4];
  30    UWORD magic;
  31 } __attribute__((packed));
  32
  33 #define MBR_MAGIC 0xAA55
  34 #define MBR_STATUS_VALID(status) ((!(status & 0x0F)) || (status & 0x80))
  35
  36 LONG MBRCheckPartitionTable(struct Library *PartitionBase, struct PartitionHandle *root, void *buffer);
  37 void PartitionMBRSetGeometry
  38     (
  39         struct PartitionHandle *root,
  40         struct PCPartitionTable *entry,
  41         ULONG sector,
  42         ULONG count,
  43         ULONG relative_sector
  44     );
  45 ULONG PartitionMBRDestroyPartitionTable(struct Library *PartitionBase,
  46     struct PartitionHandle *root);
  47
  48 #define MBR_MAX_PARTITIONS (4)
  49 #define MBRT_EXTENDED      (0x05)
  50 #define MBRT_EXTENDED2     (0x0f)
  51
  52
  53 #endif /* PARTITIONMBR_H */