Annotation of sys/dev/sun/disklabel.h, Revision 1.1.1.1
1.1 nbrk 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: };
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