FreeBSD/Linux Kernel Cross Reference
sys/sys/disk/vtoc.h
1 /*-
2 * Copyright (c) 2008 Marcel Moolenaar
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 * $FreeBSD$
27 */
28
29 #ifndef _SYS_DISK_VTOC_H_
30 #define _SYS_DISK_VTOC_H_
31
32 #include <sys/types.h>
33
34 #define VTOC_TAG_UNASSIGNED 0x00
35 #define VTOC_TAG_BOOT 0x01
36 #define VTOC_TAG_ROOT 0x02
37 #define VTOC_TAG_SWAP 0x03
38 #define VTOC_TAG_USR 0x04
39 #define VTOC_TAG_BACKUP 0x05 /* "c" partition */
40 #define VTOC_TAG_STAND 0x06
41 #define VTOC_TAG_VAR 0x07
42 #define VTOC_TAG_HOME 0x08
43 #define VTOC_TAG_ALTSCTR 0x09 /* alternate sector partition */
44 #define VTOC_TAG_CACHE 0x0a /* Solaris cachefs partition */
45 #define VTOC_TAG_VXVM_PUB 0x0e /* VxVM public region */
46 #define VTOC_TAG_VXVM_PRIV 0x0f /* VxVM private region */
47
48 /* NetBSD/mips defines this */
49 #define VTOC_TAG_NETBSD_FFS 0xff
50
51 /* FreeBSD tags: the high byte equals ELFOSABI_FREEBSD */
52 #define VTOC_TAG_FREEBSD_SWAP 0x0901
53 #define VTOC_TAG_FREEBSD_UFS 0x0902
54 #define VTOC_TAG_FREEBSD_VINUM 0x0903
55 #define VTOC_TAG_FREEBSD_ZFS 0x0904
56 #define VTOC_TAG_FREEBSD_NANDFS 0x0905
57
58 #define VTOC_FLAG_UNMNT 0x01 /* unmountable partition */
59 #define VTOC_FLAG_RDONLY 0x10 /* partition is read/only */
60
61 #define VTOC_ASCII_LEN 128
62 #define VTOC_BOOTSIZE 8192 /* 16 sectors */
63 #define VTOC_MAGIC 0xdabe
64 #define VTOC_RAW_PART 2
65 #define VTOC_SANITY 0x600ddeee
66 #define VTOC_VERSION 1
67 #define VTOC_VOLUME_LEN 8
68
69 #define VTOC8_NPARTS 8
70
71 struct vtoc8 {
72 char ascii[VTOC_ASCII_LEN];
73 uint32_t version;
74 char volume[VTOC_VOLUME_LEN];
75 uint16_t nparts;
76 struct {
77 uint16_t tag;
78 uint16_t flag;
79 } part[VTOC8_NPARTS];
80 uint16_t __alignment;
81 uint32_t bootinfo[3];
82 uint32_t sanity;
83 uint32_t reserved[10];
84 uint32_t timestamp[VTOC8_NPARTS];
85 uint16_t wskip;
86 uint16_t rskip;
87 char padding[152];
88 uint16_t rpm;
89 uint16_t physcyls;
90 uint16_t sparesecs;
91 uint16_t spare1[2];
92 uint16_t interleave;
93 uint16_t ncyls;
94 uint16_t altcyls;
95 uint16_t nheads;
96 uint16_t nsecs;
97 uint16_t spare2[2];
98 struct {
99 uint32_t cyl;
100 uint32_t nblks;
101 } map[VTOC8_NPARTS];
102 uint16_t magic;
103 uint16_t cksum;
104 };
105
106 #ifdef CTASSERT
107 CTASSERT(sizeof(struct vtoc8) == 512);
108 #endif
109
110 #endif /* _SYS_DISK_VTOC_H_ */
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