Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/dvrabel...
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / fs / freevxfs / vxfs_olt.h
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1 /*
2 * Copyright (c) 2000-2001 Christoph Hellwig.
3 * All rights reserved.
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 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions, and the following disclaimer,
10 * without modification.
11 * 2. The name of the author may not be used to endorse or promote products
12 * derived from this software without specific prior written permission.
14 * Alternatively, this software may be distributed under the terms of the
15 * GNU General Public License ("GPL").
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
21 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
30 #ifndef _VXFS_OLT_H_
31 #define _VXFS_OLT_H_
34 * Veritas filesystem driver - Object Location Table data structures.
36 * This file contains definitions for the Object Location Table used
37 * by the Veritas Filesystem version 2 and newer.
42 * OLT magic number (vxfs_olt->olt_magic).
44 #define VXFS_OLT_MAGIC 0xa504FCF5
47 * VxFS OLT entry types.
49 enum {
50 VXFS_OLT_FREE = 1,
51 VXFS_OLT_FSHEAD = 2,
52 VXFS_OLT_CUT = 3,
53 VXFS_OLT_ILIST = 4,
54 VXFS_OLT_DEV = 5,
55 VXFS_OLT_SB = 6
59 * VxFS OLT header.
61 * The Object Location Table header is placed at the beginning of each
62 * OLT extent. It is used to fing certain filesystem-wide metadata, e.g.
63 * the inital inode list, the fileset header or the device configuration.
65 struct vxfs_olt {
66 u_int32_t olt_magic; /* magic number */
67 u_int32_t olt_size; /* size of this entry */
68 u_int32_t olt_checksum; /* checksum of extent */
69 u_int32_t __unused1; /* ??? */
70 u_int32_t olt_mtime; /* time of last mod. (sec) */
71 u_int32_t olt_mutime; /* time of last mod. (usec) */
72 u_int32_t olt_totfree; /* free space in OLT extent */
73 vx_daddr_t olt_extents[2]; /* addr of this extent, replica */
74 u_int32_t olt_esize; /* size of this extent */
75 vx_daddr_t olt_next[2]; /* addr of next extent, replica */
76 u_int32_t olt_nsize; /* size of next extent */
77 u_int32_t __unused2; /* align to 8 byte boundary */
81 * VxFS common OLT entry (on disk).
83 struct vxfs_oltcommon {
84 u_int32_t olt_type; /* type of this record */
85 u_int32_t olt_size; /* size of this record */
89 * VxFS free OLT entry (on disk).
91 struct vxfs_oltfree {
92 u_int32_t olt_type; /* type of this record */
93 u_int32_t olt_fsize; /* size of this free record */
97 * VxFS initial-inode list (on disk).
99 struct vxfs_oltilist {
100 u_int32_t olt_type; /* type of this record */
101 u_int32_t olt_size; /* size of this record */
102 vx_ino_t olt_iext[2]; /* initial inode list, replica */
106 * Current Usage Table
108 struct vxfs_oltcut {
109 u_int32_t olt_type; /* type of this record */
110 u_int32_t olt_size; /* size of this record */
111 vx_ino_t olt_cutino; /* inode of current usage table */
112 u_int32_t __pad; /* unused, 8 byte align */
116 * Inodes containing Superblock, Intent log and OLTs
118 struct vxfs_oltsb {
119 u_int32_t olt_type; /* type of this record */
120 u_int32_t olt_size; /* size of this record */
121 vx_ino_t olt_sbino; /* inode of superblock file */
122 u_int32_t __unused1; /* ??? */
123 vx_ino_t olt_logino[2]; /* inode of log file,replica */
124 vx_ino_t olt_oltino[2]; /* inode of OLT, replica */
128 * Inode containing device configuration + it's replica
130 struct vxfs_oltdev {
131 u_int32_t olt_type; /* type of this record */
132 u_int32_t olt_size; /* size of this record */
133 vx_ino_t olt_devino[2]; /* inode of device config files */
137 * Fileset header
139 struct vxfs_oltfshead {
140 u_int32_t olt_type; /* type number */
141 u_int32_t olt_size; /* size of this record */
142 vx_ino_t olt_fsino[2]; /* inodes of fileset header */
145 #endif /* _VXFS_OLT_H_ */