diskmbr.h revision 282861 
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 * 4. 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 *	@(#)disklabel.h	8.2 (Berkeley) 7/10/94
30 * $FreeBSD: stable/10/sys/sys/diskmbr.h 282861 2015-05-13 14:05:53Z ae $
31 */
32
33#ifndef _SYS_DISKMBR_H_
34#define	_SYS_DISKMBR_H_
35
36#include <sys/ioccom.h>
37
38#define	DOSBBSECTOR	0	/* DOS boot block relative sector number */
39#define	DOSDSNOFF	440	/* WinNT/2K/XP Drive Serial Number offset */
40#define	DOSPARTOFF	446
41#define	DOSPARTSIZE	16
42#define	NDOSPART	4
43#define	NEXTDOSPART	32
44#define	DOSMAGICOFFSET	510
45#define	DOSMAGIC	0xAA55
46
47#define	DOSPTYP_EXT	0x05	/* DOS extended partition */
48#define	DOSPTYP_FAT16	0x06	/* FAT16 partition */
49#define	DOSPTYP_NTFS	0x07	/* NTFS partition */
50#define	DOSPTYP_FAT32	0x0b	/* FAT32 partition */
51#define	DOSPTYP_EXTLBA	0x0f	/* DOS extended partition */
52#define	DOSPTYP_PPCBOOT	0x41	/* PReP/CHRP boot partition */
53#define	DOSPTYP_LDM	0x42	/* Win2k dynamic extended partition */
54#define	DOSPTYP_LINSWP	0x82	/* Linux swap partition */
55#define	DOSPTYP_LINUX	0x83	/* Linux partition */
56#define	DOSPTYP_LINLVM	0x8e	/* Linux LVM partition */
57#define	DOSPTYP_386BSD	0xa5	/* 386BSD partition type */
58#define	DOSPTYP_APPLE_UFS	0xa8	/* Apple Mac OS X boot */
59#define	DOSPTYP_APPLE_BOOT	0xab	/* Apple Mac OS X UFS */
60#define	DOSPTYP_HFS	0xaf	/* HFS/HFS+ partition type */
61#define	DOSPTYP_PMBR	0xee	/* GPT Protective MBR */
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	u_int32_t	dp_start;	/* absolute starting sector number */
76	u_int32_t	dp_size;	/* partition size in sectors */
77};
78#ifdef CTASSERT
79CTASSERT(sizeof (struct dos_partition) == DOSPARTSIZE);
80#endif
81
82void dos_partition_dec(void const *pp, struct dos_partition *d);
83void dos_partition_enc(void *pp, struct dos_partition *d);
84
85#define	DPSECT(s) ((s) & 0x3f)		/* isolate relevant bits of sector */
86#define	DPCYL(c, s) ((c) + (((s) & 0xc0)<<2)) /* and those that are cylinder */
87
88#define DIOCSMBR 	_IOW('M', 129, u_char[512])
89
90#endif /* !_SYS_DISKMBR_H_ */
91