FreeBSD/Linux Kernel Cross Reference
sys/dev/dec/dec_boot.h
1 /* $NetBSD: dec_boot.h,v 1.6 2003/08/07 16:30:54 agc Exp $ */
2
3 /*
4 * Copyright (c) 1992, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Ralph Campbell.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * @(#)dec_boot.h 8.1 (Berkeley) 6/10/93
35 *
36 * from: Header: /sprite/src/kernel/dev/RCS/devDiskLabel.h,
37 * v 9.4 90/03/01 12:22:36 jhh Exp SPRITE (Berkeley)
38 */
39
40 #ifndef _DEV_DEC_DEC_BOOT_H_
41 #define _DEV_DEC_DEC_BOOT_H_
42
43 /* The following describes the ULTRIX partition tables.
44 */
45 /*
46 * DEC_NUM_DISK_PARTS is the number of partitions that are recorded in
47 * the label information. The size of the padding in the Dec_DiskLabel
48 * type is dependent on this number...
49 */
50 #define DEC_NUM_DISK_PARTS 8
51
52 /*
53 * A disk is divided into partitions and this type specifies where a
54 * partition starts and how many bytes it contains.
55 */
56 typedef struct dec_disk_map {
57 int32_t num_blocks; /* Number of 512 byte blocks in partition. */
58 int32_t start_block; /* Start of partition in blocks. */
59 } dec_disk_map;
60
61 /*
62 * Label information on the 31st (DEC_LABEL_SECTOR) sector.
63 */
64 typedef struct dec_disklabel {
65 u_int8_t pad0[440]; /* DIFFERENT from sprite!!! */
66 int32_t magic; /* DEC_LABEL_MAGIC */
67 int32_t is_partitioned; /* 1 if disk is partitioned. */
68 dec_disk_map map[DEC_NUM_DISK_PARTS]; /* Indicates disk partitions. */
69 } dec_disklabel;
70
71 #define DEC_LABEL_MAGIC 0x00032957
72 #define DEC_LABEL_SECTOR 31
73
74 #endif /* !_DEV_DEC_DEC_BOOT_H_ */
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