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_ */
86