Commit | Line | Data |
---|---|---|
0b1e987c | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
1da177e4 LT |
2 | /* |
3 | * Copyright (c) 2000-2001 Christoph Hellwig. | |
1da177e4 LT |
4 | */ |
5 | #ifndef _VXFS_OLT_H_ | |
6 | #define _VXFS_OLT_H_ | |
7 | ||
8 | /* | |
9 | * Veritas filesystem driver - Object Location Table data structures. | |
10 | * | |
11 | * This file contains definitions for the Object Location Table used | |
12 | * by the Veritas Filesystem version 2 and newer. | |
13 | */ | |
14 | ||
15 | ||
16 | /* | |
17 | * OLT magic number (vxfs_olt->olt_magic). | |
18 | */ | |
19 | #define VXFS_OLT_MAGIC 0xa504FCF5 | |
20 | ||
21 | /* | |
22 | * VxFS OLT entry types. | |
23 | */ | |
24 | enum { | |
25 | VXFS_OLT_FREE = 1, | |
26 | VXFS_OLT_FSHEAD = 2, | |
27 | VXFS_OLT_CUT = 3, | |
28 | VXFS_OLT_ILIST = 4, | |
29 | VXFS_OLT_DEV = 5, | |
30 | VXFS_OLT_SB = 6 | |
31 | }; | |
32 | ||
33 | /* | |
34 | * VxFS OLT header. | |
35 | * | |
36 | * The Object Location Table header is placed at the beginning of each | |
37 | * OLT extent. It is used to fing certain filesystem-wide metadata, e.g. | |
25985edc | 38 | * the initial inode list, the fileset header or the device configuration. |
1da177e4 LT |
39 | */ |
40 | struct vxfs_olt { | |
0d83f7fc KB |
41 | __fs32 olt_magic; /* magic number */ |
42 | __fs32 olt_size; /* size of this entry */ | |
43 | __fs32 olt_checksum; /* checksum of extent */ | |
44 | __u32 __unused1; /* ??? */ | |
45 | __fs32 olt_mtime; /* time of last mod. (sec) */ | |
46 | __fs32 olt_mutime; /* time of last mod. (usec) */ | |
47 | __fs32 olt_totfree; /* free space in OLT extent */ | |
48 | __fs32 olt_extents[2]; /* addr of this extent, replica */ | |
49 | __fs32 olt_esize; /* size of this extent */ | |
50 | __fs32 olt_next[2]; /* addr of next extent, replica */ | |
51 | __fs32 olt_nsize; /* size of next extent */ | |
52 | __u32 __unused2; /* align to 8 byte boundary */ | |
1da177e4 LT |
53 | }; |
54 | ||
55 | /* | |
56 | * VxFS common OLT entry (on disk). | |
57 | */ | |
58 | struct vxfs_oltcommon { | |
0d83f7fc KB |
59 | __fs32 olt_type; /* type of this record */ |
60 | __fs32 olt_size; /* size of this record */ | |
1da177e4 LT |
61 | }; |
62 | ||
63 | /* | |
64 | * VxFS free OLT entry (on disk). | |
65 | */ | |
66 | struct vxfs_oltfree { | |
0d83f7fc KB |
67 | __fs32 olt_type; /* type of this record */ |
68 | __fs32 olt_fsize; /* size of this free record */ | |
1da177e4 LT |
69 | }; |
70 | ||
71 | /* | |
72 | * VxFS initial-inode list (on disk). | |
73 | */ | |
74 | struct vxfs_oltilist { | |
0d83f7fc KB |
75 | __fs32 olt_type; /* type of this record */ |
76 | __fs32 olt_size; /* size of this record */ | |
77 | __fs32 olt_iext[2]; /* initial inode list, replica */ | |
1da177e4 LT |
78 | }; |
79 | ||
80 | /* | |
81 | * Current Usage Table | |
82 | */ | |
83 | struct vxfs_oltcut { | |
0d83f7fc KB |
84 | __fs32 olt_type; /* type of this record */ |
85 | __fs32 olt_size; /* size of this record */ | |
86 | __fs32 olt_cutino; /* inode of current usage table */ | |
87 | __u8 __pad; /* unused, 8 byte align */ | |
1da177e4 LT |
88 | }; |
89 | ||
90 | /* | |
91 | * Inodes containing Superblock, Intent log and OLTs | |
92 | */ | |
93 | struct vxfs_oltsb { | |
0d83f7fc KB |
94 | __fs32 olt_type; /* type of this record */ |
95 | __fs32 olt_size; /* size of this record */ | |
96 | __fs32 olt_sbino; /* inode of superblock file */ | |
97 | __u32 __unused1; /* ??? */ | |
98 | __fs32 olt_logino[2]; /* inode of log file,replica */ | |
99 | __fs32 olt_oltino[2]; /* inode of OLT, replica */ | |
1da177e4 LT |
100 | }; |
101 | ||
102 | /* | |
103 | * Inode containing device configuration + it's replica | |
104 | */ | |
105 | struct vxfs_oltdev { | |
0d83f7fc KB |
106 | __fs32 olt_type; /* type of this record */ |
107 | __fs32 olt_size; /* size of this record */ | |
108 | __fs32 olt_devino[2]; /* inode of device config files */ | |
1da177e4 LT |
109 | }; |
110 | ||
111 | /* | |
112 | * Fileset header | |
113 | */ | |
114 | struct vxfs_oltfshead { | |
0d83f7fc KB |
115 | __fs32 olt_type; /* type number */ |
116 | __fs32 olt_size; /* size of this record */ | |
117 | __fs32 olt_fsino[2]; /* inodes of fileset header */ | |
1da177e4 LT |
118 | }; |
119 | ||
120 | #endif /* _VXFS_OLT_H_ */ |