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