1/*-
2 * Copyright (c) 1987, 1988, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30#ifndef _SYS_DISK_MBR_H_
31#define _SYS_DISK_MBR_H_
32
33#include <sys/types.h>
34
35#define DOSBBSECTOR 0 /* DOS boot block relative sector number */
36#define DOSDSNOFF 440 /* WinNT/2K/XP Drive Serial Number offset */
37#define DOSPARTOFF 446
38#define DOSPARTSIZE 16
39#define NDOSPART 4
40#define NEXTDOSPART 32
41#define DOSMAGICOFFSET 510
42#define DOSMAGIC 0xAA55
43
44#define DOSPTYP_EXT 0x05 /* DOS extended partition */
45#define DOSPTYP_FAT16 0x06 /* FAT16 partition */
46#define DOSPTYP_NTFS 0x07 /* NTFS partition */
47#define DOSPTYP_FAT32 0x0b /* FAT32 partition */
48#define DOSPTYP_FAT32LBA 0x0c /* FAT32 with LBA partition */
49#define DOSPTYP_EXTLBA 0x0f /* DOS extended partition */
50#define DOSPTYP_PPCBOOT 0x41 /* PReP/CHRP boot partition */
51#define DOSPTYP_LDM 0x42 /* Win2k dynamic extended partition */
52#define DOSPTYP_DFLYBSD 0x6c /* DragonFlyBSD partition type */
53#define DOSPTYP_LINSWP 0x82 /* Linux swap partition */
54#define DOSPTYP_LINUX 0x83 /* Linux partition */
55#define DOSPTYP_LINLVM 0x8e /* Linux LVM partition */
56#define DOSPTYP_386BSD 0xa5 /* 386BSD partition type */
57#define DOSPTYP_APPLE_UFS 0xa8 /* Apple Mac OS X boot */
58#define DOSPTYP_APPLE_BOOT 0xab /* Apple Mac OS X UFS */
59#define DOSPTYP_HFS 0xaf /* HFS/HFS+ partition type */
60#define DOSPTYP_PMBR 0xee /* GPT Protective MBR */
61#define DOSPTYP_EFI 0xef /* EFI FAT parition */
62#define DOSPTYP_VMFS 0xfb /* VMware VMFS partition */
63#define DOSPTYP_VMKDIAG 0xfc /* VMware vmkDiagnostic partition */
64#define DOSPTYP_LINRAID 0xfd /* Linux raid partition */
65
66struct dos_partition {
67 unsigned char dp_flag; /* bootstrap flags */
68 unsigned char dp_shd; /* starting head */
69 unsigned char dp_ssect; /* starting sector */
70 unsigned char dp_scyl; /* starting cylinder */
71 unsigned char dp_typ; /* partition type */
72 unsigned char dp_ehd; /* end head */
73 unsigned char dp_esect; /* end sector */
74 unsigned char dp_ecyl; /* end cylinder */
75 uint32_t dp_start; /* absolute starting sector number */
76 uint32_t dp_size; /* partition size in sectors */
77};
78#ifdef CTASSERT
79CTASSERT(sizeof (struct dos_partition) == DOSPARTSIZE);
80#endif
81
82#define DPSECT(s) ((s) & 0x3f) /* isolate relevant bits of sector */
83#define DPCYL(c, s) ((c) + (((s) & 0xc0)<<2)) /* and those that are cylinder */
84
85#endif /* !_SYS_DISK_MBR_H_ */