| 1 |
1275 |
phoenix |
/*
|
| 2 |
|
|
* Copyright (c) 2000-2001 Christoph Hellwig.
|
| 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 |
|
|
* 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.
|
| 13 |
|
|
*
|
| 14 |
|
|
* Alternatively, this software may be distributed under the terms of the
|
| 15 |
|
|
* GNU General Public License ("GPL").
|
| 16 |
|
|
*
|
| 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.
|
| 28 |
|
|
*
|
| 29 |
|
|
*/
|
| 30 |
|
|
#ifndef _VXFS_OLT_H_
|
| 31 |
|
|
#define _VXFS_OLT_H_
|
| 32 |
|
|
|
| 33 |
|
|
#ident "$Id: vxfs_olt.h,v 1.1.1.1 2004-04-15 01:11:44 phoenix Exp $"
|
| 34 |
|
|
|
| 35 |
|
|
/*
|
| 36 |
|
|
* Veritas filesystem driver - Object Location Table data structures.
|
| 37 |
|
|
*
|
| 38 |
|
|
* This file contains definitions for the Object Location Table used
|
| 39 |
|
|
* by the Veritas Filesystem version 2 and newer.
|
| 40 |
|
|
*/
|
| 41 |
|
|
|
| 42 |
|
|
|
| 43 |
|
|
/*
|
| 44 |
|
|
* OLT magic number (vxfs_olt->olt_magic).
|
| 45 |
|
|
*/
|
| 46 |
|
|
#define VXFS_OLT_MAGIC 0xa504FCF5
|
| 47 |
|
|
|
| 48 |
|
|
/*
|
| 49 |
|
|
* VxFS OLT entry types.
|
| 50 |
|
|
*/
|
| 51 |
|
|
enum {
|
| 52 |
|
|
VXFS_OLT_FREE = 1,
|
| 53 |
|
|
VXFS_OLT_FSHEAD = 2,
|
| 54 |
|
|
VXFS_OLT_CUT = 3,
|
| 55 |
|
|
VXFS_OLT_ILIST = 4,
|
| 56 |
|
|
VXFS_OLT_DEV = 5,
|
| 57 |
|
|
VXFS_OLT_SB = 6
|
| 58 |
|
|
};
|
| 59 |
|
|
|
| 60 |
|
|
/*
|
| 61 |
|
|
* VxFS OLT header.
|
| 62 |
|
|
*
|
| 63 |
|
|
* The Object Location Table header is placed at the beginning of each
|
| 64 |
|
|
* OLT extent. It is used to fing certain filesystem-wide metadata, e.g.
|
| 65 |
|
|
* the inital inode list, the fileset header or the device configuration.
|
| 66 |
|
|
*/
|
| 67 |
|
|
struct vxfs_olt {
|
| 68 |
|
|
u_int32_t olt_magic; /* magic number */
|
| 69 |
|
|
u_int32_t olt_size; /* size of this entry */
|
| 70 |
|
|
u_int32_t olt_checksum; /* checksum of extent */
|
| 71 |
|
|
u_int32_t __unused1; /* ??? */
|
| 72 |
|
|
u_int32_t olt_mtime; /* time of last mod. (sec) */
|
| 73 |
|
|
u_int32_t olt_mutime; /* time of last mod. (usec) */
|
| 74 |
|
|
u_int32_t olt_totfree; /* free space in OLT extent */
|
| 75 |
|
|
vx_daddr_t olt_extents[2]; /* addr of this extent, replica */
|
| 76 |
|
|
u_int32_t olt_esize; /* size of this extent */
|
| 77 |
|
|
vx_daddr_t olt_next[2]; /* addr of next extent, replica */
|
| 78 |
|
|
u_int32_t olt_nsize; /* size of next extent */
|
| 79 |
|
|
u_int32_t __unused2; /* align to 8 byte boundary */
|
| 80 |
|
|
};
|
| 81 |
|
|
|
| 82 |
|
|
/*
|
| 83 |
|
|
* VxFS common OLT entry (on disk).
|
| 84 |
|
|
*/
|
| 85 |
|
|
struct vxfs_oltcommon {
|
| 86 |
|
|
u_int32_t olt_type; /* type of this record */
|
| 87 |
|
|
u_int32_t olt_size; /* size of this record */
|
| 88 |
|
|
};
|
| 89 |
|
|
|
| 90 |
|
|
/*
|
| 91 |
|
|
* VxFS free OLT entry (on disk).
|
| 92 |
|
|
*/
|
| 93 |
|
|
struct vxfs_oltfree {
|
| 94 |
|
|
u_int32_t olt_type; /* type of this record */
|
| 95 |
|
|
u_int32_t olt_fsize; /* size of this free record */
|
| 96 |
|
|
};
|
| 97 |
|
|
|
| 98 |
|
|
/*
|
| 99 |
|
|
* VxFS initial-inode list (on disk).
|
| 100 |
|
|
*/
|
| 101 |
|
|
struct vxfs_oltilist {
|
| 102 |
|
|
u_int32_t olt_type; /* type of this record */
|
| 103 |
|
|
u_int32_t olt_size; /* size of this record */
|
| 104 |
|
|
vx_ino_t olt_iext[2]; /* initial inode list, replica */
|
| 105 |
|
|
};
|
| 106 |
|
|
|
| 107 |
|
|
/*
|
| 108 |
|
|
* Current Usage Table
|
| 109 |
|
|
*/
|
| 110 |
|
|
struct vxfs_oltcut {
|
| 111 |
|
|
u_int32_t olt_type; /* type of this record */
|
| 112 |
|
|
u_int32_t olt_size; /* size of this record */
|
| 113 |
|
|
vx_ino_t olt_cutino; /* inode of current usage table */
|
| 114 |
|
|
u_int32_t __pad; /* unused, 8 byte align */
|
| 115 |
|
|
};
|
| 116 |
|
|
|
| 117 |
|
|
/*
|
| 118 |
|
|
* Inodes containing Superblock, Intent log and OLTs
|
| 119 |
|
|
*/
|
| 120 |
|
|
struct vxfs_oltsb {
|
| 121 |
|
|
u_int32_t olt_type; /* type of this record */
|
| 122 |
|
|
u_int32_t olt_size; /* size of this record */
|
| 123 |
|
|
vx_ino_t olt_sbino; /* inode of superblock file */
|
| 124 |
|
|
u_int32_t __unused1; /* ??? */
|
| 125 |
|
|
vx_ino_t olt_logino[2]; /* inode of log file,replica */
|
| 126 |
|
|
vx_ino_t olt_oltino[2]; /* inode of OLT, replica */
|
| 127 |
|
|
};
|
| 128 |
|
|
|
| 129 |
|
|
/*
|
| 130 |
|
|
* Inode containing device configuration + it's replica
|
| 131 |
|
|
*/
|
| 132 |
|
|
struct vxfs_oltdev {
|
| 133 |
|
|
u_int32_t olt_type; /* type of this record */
|
| 134 |
|
|
u_int32_t olt_size; /* size of this record */
|
| 135 |
|
|
vx_ino_t olt_devino[2]; /* inode of device config files */
|
| 136 |
|
|
};
|
| 137 |
|
|
|
| 138 |
|
|
/*
|
| 139 |
|
|
* Fileset header
|
| 140 |
|
|
*/
|
| 141 |
|
|
struct vxfs_oltfshead {
|
| 142 |
|
|
u_int32_t olt_type; /* type number */
|
| 143 |
|
|
u_int32_t olt_size; /* size of this record */
|
| 144 |
|
|
vx_ino_t olt_fsino[2]; /* inodes of fileset header */
|
| 145 |
|
|
};
|
| 146 |
|
|
|
| 147 |
|
|
#endif /* _VXFS_OLT_H_ */
|
