xref: /illumos-gate/usr/src/boot/sys/sys/diskmbr.h (revision 199767f8919635c4928607450d9e0abb932109ce)
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  * $FreeBSD$
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 UFS */
59 #define	DOSPTYP_APPLE_BOOT	0xab	/* Apple Mac OS X boot */
60 #define	DOSPTYP_HFS	0xaf	/* HFS/HFS+ partition type */
61 #define	DOSPTYP_SUNIXOS2 0xbf	/* Solaris2 partition */
62 #define	DOSPTYP_PMBR	0xee	/* GPT Protective MBR */
63 #define	DOSPTYP_EFI	0xef	/* EFI FAT parition */
64 #define	DOSPTYP_VMFS	0xfb	/* VMware VMFS partition */
65 #define	DOSPTYP_VMKDIAG	0xfc	/* VMware vmkDiagnostic partition */
66 #define	DOSPTYP_LINRAID	0xfd	/* Linux raid partition */
67 
68 struct dos_partition {
69 	unsigned char	dp_flag;	/* bootstrap flags */
70 	unsigned char	dp_shd;		/* starting head */
71 	unsigned char	dp_ssect;	/* starting sector */
72 	unsigned char	dp_scyl;	/* starting cylinder */
73 	unsigned char	dp_typ;		/* partition type */
74 	unsigned char	dp_ehd;		/* end head */
75 	unsigned char	dp_esect;	/* end sector */
76 	unsigned char	dp_ecyl;	/* end cylinder */
77 	u_int32_t	dp_start;	/* absolute starting sector number */
78 	u_int32_t	dp_size;	/* partition size in sectors */
79 };
80 #ifdef CTASSERT
81 CTASSERT(sizeof (struct dos_partition) == DOSPARTSIZE);
82 #endif
83 
84 void dos_partition_dec(void const *pp, struct dos_partition *d);
85 void dos_partition_enc(void *pp, struct dos_partition *d);
86 
87 #define	DPSECT(s) ((s) & 0x3f)		/* isolate relevant bits of sector */
88 #define	DPCYL(c, s) ((c) + (((s) & 0xc0)<<2)) /* and those that are cylinder */
89 
90 #define DIOCSMBR 	_IOW('M', 129, u_char[512])
91 
92 #endif /* !_SYS_DISKMBR_H_ */
93