1 /* $OpenBSD: disklabel.h,v 1.4 2007/05/31 00:30:10 deraadt Exp $ */
2 /* $NetBSD: disklabel.h,v 1.2 1998/08/22 14:55:28 mrg Exp $ */
3
4 /*
5 * Copyright (c) 1992, 1993
6 * The Regents of the University of California. All rights reserved.
7 *
8 * This software was developed by the Computer Systems Engineering group
9 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
10 * contributed to Berkeley.
11 *
12 * All advertising materials mentioning features or use of this software
13 * must display the following acknowledgement:
14 * This product includes software developed by the University of
15 * California, Lawrence Berkeley Laboratory.
16 *
17 * Redistribution and use in source and binary forms, with or without
18 * modification, are permitted provided that the following conditions
19 * are met:
20 * 1. Redistributions of source code must retain the above copyright
21 * notice, this list of conditions and the following disclaimer.
22 * 2. Redistributions in binary form must reproduce the above copyright
23 * notice, this list of conditions and the following disclaimer in the
24 * documentation and/or other materials provided with the distribution.
25 * 3. Neither the name of the University nor the names of its contributors
26 * may be used to endorse or promote products derived from this software
27 * without specific prior written permission.
28 *
29 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
30 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
31 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
32 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
33 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
34 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
35 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
36 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
37 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
38 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
39 * SUCH DAMAGE.
40 *
41 * @(#)sun_disklabel.h 8.1 (Berkeley) 6/11/93
42 */
43
44 /*
45 * SunOS disk label layout (only relevant portions discovered here).
46 */
47
48 #define SUN_DKMAGIC 55998
49
50 /* partition info */
51 struct sun_dkpart {
52 int sdkp_cyloffset; /* starting cylinder */
53 int sdkp_nsectors; /* number of sectors */
54 };
55
56 #define SUNXPART 8
57 #define SL_XPMAG (0x199d1fe2+SUNXPART)
58 #define SL_XPMAGTYP (0x199d1fe2+SUNXPART+1) /* contains types */
59
60 struct sun_disklabel { /* total size = 512 bytes */
61 char sl_text[128];
62 u_int sl_xpsum; /* additive cksum, [xl_xpmag,sl_xx1) */
63 u_int sl_xpmag; /* "extended" magic number */
64 struct sun_dkpart sl_xpart[SUNXPART]; /* "extended" partitions, i through p */
65 u_char sl_types[MAXPARTITIONS];
66 u_int8_t sl_fragblock[MAXPARTITIONS];
67 u_int16_t sl_cpg[MAXPARTITIONS];
68 char sl_xxx1[292 - sizeof(u_int) - sizeof(u_int) -
69 (sizeof(struct sun_dkpart) * SUNXPART) -
70 sizeof(u_char) * MAXPARTITIONS -
71 sizeof(u_int8_t) * MAXPARTITIONS -
72 sizeof(u_int16_t) * MAXPARTITIONS];
73 u_short sl_rpm; /* rotational speed */
74 u_short sl_pcylinders; /* number of physical cyls */
75 #define sl_pcyl sl_pcylinders /* XXX: old sun3 */
76 u_short sl_sparespercyl; /* spare sectors per cylinder */
77 char sl_xxx3[4];
78 u_short sl_interleave; /* interleave factor */
79 u_short sl_ncylinders; /* data cylinders */
80 u_short sl_acylinders; /* alternate cylinders */
81 u_short sl_ntracks; /* tracks per cylinder */
82 u_short sl_nsectors; /* sectors per track */
83 char sl_xxx4[4];
84 struct sun_dkpart sl_part[8]; /* partition layout */
85 u_short sl_magic; /* == SUN_DKMAGIC */
86 u_short sl_cksum; /* xor checksum of all shorts */
87 };