1/* $NetBSD: disklabel.h,v 1.16 2011/08/30 12:39:55 bouyer Exp $ */
2
3/*
4 * Copyright (c) 1994 Christopher G. Demetriou
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 Christopher G. Demetriou.
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 _I386_DISKLABEL_H_
34#define _I386_DISKLABEL_H_
35
36#define LABELUSESMBR 1 /* use MBR partitionning */
37#define LABELSECTOR 1 /* sector containing label */
38#define LABELOFFSET 0 /* offset of label in sector */
39#define MAXPARTITIONS 16 /* number of partitions */
40#define OLDMAXPARTITIONS 8 /* number of partitions before 1.6 */
41#define RAW_PART 3 /* raw partition: XX?d (XXX) */
42
43/*
44 * We use the highest bit of the minor number for the partition number.
45 * This maintains backward compatibility with device nodes created before
46 * MAXPARTITIONS was increased.
47 */
48#define __I386_MAXDISKS ((1 << 20) / MAXPARTITIONS)
49#define DISKUNIT(dev) ((minor(dev) / OLDMAXPARTITIONS) % __I386_MAXDISKS)
50#define DISKPART(dev) ((minor(dev) % OLDMAXPARTITIONS) + \
51 ((minor(dev) / (__I386_MAXDISKS * OLDMAXPARTITIONS)) * OLDMAXPARTITIONS))
52#define DISKMINOR(unit, part) \
53 (((unit) * OLDMAXPARTITIONS) + ((part) % OLDMAXPARTITIONS) + \
54 ((part) / OLDMAXPARTITIONS) * (__I386_MAXDISKS * OLDMAXPARTITIONS))
55
56/* Pull in MBR partition definitions. */
57#if HAVE_NBTOOL_CONFIG_H
58#include <nbinclude/sys/bootblock.h>
59#else
60#include <sys/bootblock.h>
61#endif /* HAVE_NBTOOL_CONFIG_H */
62
63#ifndef __ASSEMBLER__
64#if HAVE_NBTOOL_CONFIG_H
65#include <nbinclude/sys/dkbad.h>
66#else
67#include <sys/dkbad.h>
68#endif /* HAVE_NBTOOL_CONFIG_H */
69struct cpu_disklabel {
70#define __HAVE_DISKLABEL_DKBAD
71 struct dkbad bad;
72};
73#endif
74
75#endif /* _I386_DISKLABEL_H_ */
76