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2 * Copyright (c) 2000-2001 Christoph Hellwig.
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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.
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.
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).
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
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
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
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 */
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_ */