121 lines
3.0 KiB
C
121 lines
3.0 KiB
C
|
/* 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_ */
|