sun_disklabel.h revision 113894 
1/*
2 * Copyright (c) 1992, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * This software was developed by the Computer Systems Engineering group
6 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
7 * contributed to Berkeley.
8 *
9 * All advertising materials mentioning features or use of this software
10 * must display the following acknowledgement:
11 *	This product includes software developed by the University of
12 *	California, Lawrence Berkeley Laboratory.
13 *
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
16 * are met:
17 * 1. Redistributions of source code must retain the above copyright
18 *    notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 *    notice, this list of conditions and the following disclaimer in the
21 *    documentation and/or other materials provided with the distribution.
22 * 3. All advertising materials mentioning features or use of this software
23 *    must display the following acknowledgement:
24 *	This product includes software developed by the University of
25 *	California, Berkeley and its contributors.
26 * 4. Neither the name of the University nor the names of its contributors
27 *    may be used to endorse or promote products derived from this software
28 *    without specific prior written permission.
29 *
30 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
31 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
32 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
33 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
34 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
35 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
36 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
37 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
38 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
39 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
40 * SUCH DAMAGE.
41 *
42 *	@(#)sun_disklabel.h	8.1 (Berkeley) 6/11/93
43 *	$NetBSD: disklabel.h,v 1.2 1998/08/22 14:55:28 mrg Exp $
44 *
45 * $FreeBSD: head/sys/sys/sun_disklabel.h 113894 2003-04-23 08:04:30Z phk $
46 */
47
48#ifndef _SYS_SUN_DISKLABEL_H_
49#define	_SYS_SUN_DISKLABEL_H_
50
51/*
52 * SunOS/Solaris disk label layout (partial).
53 *
54 * Suns disk label format contains a lot of historical baggage which we
55 * ignore entirely.  The structure below contains the relevant bits and the
56 * _enc/_dec functions encode/decode only these fields.
57 */
58
59#define	SUN_DKMAGIC	55998
60#define	SUN_NPART	8
61#define	SUN_RAWPART	2
62#define	SUN_SIZE	512
63/*
64 * XXX: I am actually not sure if this should be "16 sectors" or "8192 bytes".
65 * XXX: Considering that Sun went to the effort of getting 512 byte compatible
66 * XXX: CDROM drives produced my guess is that Sun computers stand little or
67 * XXX: even no chance of running, much less booting on !=512 byte media.
68 * XXX: Define this is in terms of bytes since that is easier for us.
69 */
70#define	SUN_BOOTSIZE	8192
71
72/* partition info */
73struct sun_dkpart {
74	u_int32_t	sdkp_cyloffset;		/* starting cylinder */
75	u_int32_t	sdkp_nsectors;		/* number of sectors */
76};
77
78struct sun_disklabel {
79	char		sl_text[128];
80	u_int16_t	sl_rpm;			/* rotational speed */
81	u_int16_t	sl_pcylinders;		/* number of physical cyls */
82	u_int16_t	sl_sparespercyl;	/* spare sectors per cylinder */
83	u_int16_t	sl_interleave;		/* interleave factor */
84	u_int16_t	sl_ncylinders;		/* data cylinders */
85	u_int16_t	sl_acylinders;		/* alternate cylinders */
86	u_int16_t	sl_ntracks;		/* tracks per cylinder */
87	u_int16_t	sl_nsectors;		/* sectors per track */
88	struct sun_dkpart sl_part[SUN_NPART];	/* partition layout */
89	u_int16_t	sl_magic;		/* == SUN_DKMAGIC */
90};
91
92int sunlabel_dec(void const *pp, struct sun_disklabel *sl);
93void sunlabel_enc(void *pp, struct sun_disklabel *sl);
94
95#endif /* _SYS_SUN_DISKLABEL_H_ */
96