i386/libsaio/fdisk.h

   1 /*
   2  * Copyright (c) 1999-2003 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Portions Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights
   7  * Reserved.  This file contains Original Code and/or Modifications of
   8  * Original Code as defined in and that are subject to the Apple Public
   9  * Source License Version 2.0 (the "License").  You may not use this file
  10  * except in compliance with the License.  Please obtain a copy of the
  11  * License at http://www.apple.com/publicsource and read it before using
  12  * this file.
  13  *
  14  * The Original Code and all software distributed under the License are
  15  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  16  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  17  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT.  Please see the
  19  * License for the specific language governing rights and limitations
  20  * under the License.
  21  *
  22  * @APPLE_LICENSE_HEADER_END@
  23  */
  24 /*
  25  * Copyright (c) 1992 NeXT Computer, Inc.
  26  *
  27  * IBM PC disk partitioning data structures.
  28  *
  29  * HISTORY
  30  *
  31  * 8 July 1992 David E. Bohman at NeXT
  32  *    Created.
  33  */
  34
  35 #ifndef __LIBSAIO_FDISK_H
  36 #define __LIBSAIO_FDISK_H
  37
  38 #define DISK_BLK0       0       /* blkno of boot block */
  39 #define DISK_BLK0SZ     512     /* size of boot block */
  40 #define DISK_BOOTSZ     446     /* size of boot code in boot block */
  41 #define DISK_SIGNATURE  0xAA55  /* signature of the boot record */
  42 #define FDISK_NPART     4       /* number of entries in fdisk table */
  43 #define FDISK_ACTIVE    0x80    /* indicator of active partition */
  44 #define FDISK_NEXTNAME  0xA7    /* indicator of NeXT partition */
  45 #define FDISK_DOS12     0x01    /* 12-bit fat < 10MB dos partition */
  46 #define FDISK_DOS16S    0x04    /* 16-bit fat < 32MB dos partition */
  47 #define FDISK_DOSEXT    0x05    /* extended dos partition */
  48 #define FDISK_DOS16B    0x06    /* 16-bit fat >= 32MB dos partition */
  49 #define FDISK_NTFS      0x07    /* NTFS partition */
  50 #define FDISK_FAT32     0x0c    /* FAT32 partition */
  51 #define FDISK_UFS       0xa8    /* Apple UFS partition */
  52 #define FDISK_HFS       0xaf    /* Apple HFS partition */
  53 #define FDISK_BOOTER    0xab    /* Apple booter partition */
  54
  55 /*
  56  * Format of fdisk partion entry (if present).
  57  */
  58 struct fdisk_part {
  59     unsigned char    bootid;    /* bootable or not */
  60     unsigned char    beghead;   /* begining head, sector, cylinder */
  61     unsigned char    begsect;   /* begcyl is a 10-bit number */
  62     unsigned char    begcyl;    /* High 2 bits are in begsect */
  63     unsigned char    systid;    /* OS type */
  64     unsigned char    endhead;   /* ending head, sector, cylinder */
  65     unsigned char    endsect;   /* endcyl is a 10-bit number */
  66     unsigned char    endcyl;    /* High 2 bits are in endsect */
  67     unsigned long    relsect;   /* partion physical offset on disk */
  68     unsigned long    numsect;   /* number of sectors in partition */
  69 };
  70
  71 /*
  72  * Format of boot block.
  73  */
  74 struct disk_blk0 {
  75     unsigned char    bootcode[DISK_BOOTSZ];
  76     unsigned char    parts[FDISK_NPART][sizeof (struct fdisk_part)];
  77     unsigned short   signature;
  78 };
  79
  80 #endif /* !__LIBSAIO_FDISK_H */