disklabel.h revision 1.4 
1/* $NetBSD: disklabel.h,v 1.4 1999/04/02 07:32:33 cgd Exp $ */
2
3/*
4 * Copyright (c) 1994, 1999 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 *      for the NetBSD Project.
19 * 4. The name of the author may not be used to endorse or promote products
20 *    derived from this software without specific prior written permission
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34#ifndef _MACHINE_DISKLABEL_H_
35#define _MACHINE_DISKLABEL_H_
36
37#define	LABELSECTOR	0			/* sector containing label */
38#define	LABELOFFSET	64			/* offset of label in sector */
39#define	MAXPARTITIONS	8			/* number of partitions */
40#define	RAW_PART	2			/* raw partition: xx?c */
41
42#include <sys/dkbad.h>
43
44/* Just a dummy */
45struct cpu_disklabel {
46	struct dkbad bad;			/* bad-sector information */
47};
48
49/*
50 * Alpha (disk, but also tape) Boot Block.  See Section (III) 3.6.1 of the
51 * Alpha Architecture Reference Manual.
52 */
53
54struct boot_block {
55	u_int64_t bb_pad[60];		/* disklabel lives in here */
56	u_int64_t bb_secsize;		/* secondary size (blocks) */
57	u_int64_t bb_secstart;		/* secondary start (blocks) */
58	u_int64_t bb_flags;		/* unknown; always zero */
59	u_int64_t bb_cksum;		/* checksum of the the boot block,
60					 * taken as u_int64_t's
61					 */
62};
63
64#define	BOOT_BLOCK_BLOCKSIZE	512	/* block size for sec. size/start */
65
66#endif /* _MACHINE_DISKLABEL_H_ */
67