mbr.h revision 1.8 
1/*	$OpenBSD: mbr.h,v 1.8 2002/01/04 08:35:06 kjell Exp $	*/
2
3/*
4 * Copyright (c) 1997 Tobias Weingartner
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 *    must display the following acknowledgement:
17 *    This product includes software developed by Tobias Weingartner.
18 * 4. The name of the author may not be used to endorse or promote products
19 *    derived from this software without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32
33#ifndef _MBR_H
34#define _MBR_H
35
36#include "part.h"
37
38/* Various constants */
39#define MBR_CODE_SIZE 0x1BE
40#define MBR_PART_SIZE	0x10
41#define MBR_PART_OFF 0x1BE
42#define MBR_SIG_OFF 0x1FE
43
44
45/* MBR type */
46typedef struct _mbr_t {
47	off_t reloffset;
48	off_t offset;
49	unsigned char code[MBR_CODE_SIZE];
50	prt_t part[NDOSPART];
51	unsigned short signature;
52} mbr_t;
53
54/* Prototypes */
55void MBR_print_disk __P((char *));
56void MBR_print __P((mbr_t *));
57void MBR_parse __P((disk_t *, char *, off_t, off_t, mbr_t *));
58void MBR_make __P((mbr_t *, char *));
59void MBR_init __P((disk_t *, mbr_t *));
60int MBR_read __P((int, off_t, char *));
61int MBR_write __P((int, off_t, char *));
62void MBR_pcopy __P((disk_t *, mbr_t *));
63
64/* Sanity check */
65#include <machine/param.h>
66#if (DEV_BSIZE != 512)
67#error "DEV_BSIZE != 512, somebody better fix me!"
68#endif
69
70#endif /* _MBR_H */
71
72