i386/libsaio/fdisk.h

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