sun_disklabel.h revision 113816 
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 113816 2003-04-21 19:31:42Z phk $
46 */
47
48/*
49 * SunOS disk label layout (only relevant portions discovered here).
50 */
51
52#define	SUN_DKMAGIC	55998
53
54/* geometry info */
55struct sun_dkgeom {
56	u_short	sdkc_ncylinders;	/* data cylinders */
57	u_short	sdkc_acylinders;	/* alternate cylinders */
58	u_short	sdkc_xxx1;
59	u_short	sdkc_ntracks;		/* tracks per cylinder */
60	u_short	sdkc_xxx2;
61	u_short	sdkc_nsectors;		/* sectors per track */
62	u_short	sdkc_interleave;	/* interleave factor */
63	u_short	sdkc_xxx3;
64	u_short	sdkc_xxx4;
65	u_short	sdkc_sparespercyl;	/* spare sectors per cylinder */
66	u_short	sdkc_rpm;		/* rotational speed */
67	u_short	sdkc_pcylinders;	/* physical cylinders */
68	u_short	sdkc_xxx5[7];
69};
70
71/* controller info */
72struct sun_dkctlr {
73	int	sdkc_addr;		/* controller address */
74	short	sdkc_unit;		/* unit (slave) address */
75	short	sdkc_type;		/* controller type */
76	short	sdkc_flags;		/* flags */
77};
78
79/* partition info */
80struct sun_dkpart {
81	u_int32_t	sdkp_cyloffset;		/* starting cylinder */
82	u_int32_t	sdkp_nsectors;		/* number of sectors */
83};
84
85struct sun_disklabel {			/* total size = 512 bytes */
86	char		sl_text[128];
87	char		sl_xxx1[292];
88	u_int16_t	sl_rpm;		/* rotational speed */
89	u_int16_t	sl_pcylinders;		/* number of physical cyls */
90	u_int16_t	sl_sparespercyl;	/* spare sectors per cylinder */
91	char		sl_xxx3[4];
92	u_int16_t	sl_interleave;		/* interleave factor */
93	u_int16_t	sl_ncylinders;		/* data cylinders */
94	u_int16_t	sl_acylinders;		/* alternate cylinders */
95	u_int16_t	sl_ntracks;		/* tracks per cylinder */
96	u_int16_t	sl_nsectors;		/* sectors per track */
97	char		sl_xxx4[4];
98	struct sun_dkpart sl_part[8];	/* partition layout */
99	u_int16_t	sl_magic;		/* == SUN_DKMAGIC */
100	u_int16_t	sl_cksum;		/* xor checksum of all shorts */
101};
102
103#ifdef CTASSERT
104CTASSERT(sizeof (struct sun_disklabel) == 512);
105#endif
106
107int sunlabel_dec(void const *pp, struct sun_disklabel *sl);
108void sunlabel_enc(void *pp, struct sun_disklabel *sl);
109