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/******************************************************************************
*******************************************************************************
**
** Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
** Copyright (C) 2004 Red Hat, Inc. All rights reserved.
**
** This copyrighted material is made available to anyone wishing to use,
** modify, copy, or redistribute it subject to the terms and conditions
** of the GNU General Public License v.2.
**
*******************************************************************************
******************************************************************************/
#ifndef __INCORE_DOT_H__
#define __INCORE_DOT_H__
#include "osi_user.h"
#include <linux/gfs_ondisk.h>
struct fs_sbd;
struct fs_inode;
struct fs_rgrpd;
struct fs_bitmap;
typedef struct fs_sbd fs_sbd_t;
typedef struct fs_inode fs_inode_t;
typedef struct fs_rgrpd fs_rgrpd_t;
typedef struct fs_bitmap fs_bitmap_t;
/******************************************************************
********* structures that are specific to the fsck *************
******************************************************************/
struct di_info
{
osi_list_t din_list;
uint64 din_addr;
uint32 din_nlink;
uint32 din_dirents;
};
typedef struct di_info di_info_t;
/* Use to manage in core bitmaps */
struct bitmap_list
{
osi_list_t list;
char *bm;
fs_rgrpd_t *rgd;
};
typedef struct bitmap_list bitmap_list_t;
/* Generally used to keep list of blocks */
struct blk_list
{
osi_list_t list;
uint64 blk;
};
typedef struct blk_list blk_list_t;
/******************************************************************
********* structures that are specific to the FS ***************
******************************************************************/
struct fs_bitmap
{
uint32 bi_offset; /* The offset in the buffer of the first byte */
uint32 bi_start; /* The position of the first byte in this block */
uint32 bi_len; /* The number of bytes in this block */
};
/*
* Structure containing information Resource Groups
*/
struct fs_rgrpd
{
fs_sbd_t *rd_sbd; /* ptr to in-core super block */
osi_list_t rd_list; /* Link with superblock */
struct gfs_rindex rd_ri; /* Resource Index structure */
struct gfs_rgrp rd_rg; /* Resource Group structure */
int32 rd_open_count; /* # of open references on this rgrpd */
fs_bitmap_t *rd_bits;
osi_buf_t **rd_bh;
};
/*
* Incore inode structure
*/
struct fs_inode
{
fs_sbd_t *i_sbd; /* GFS superblock pointer */
struct gfs_inum i_num;
struct gfs_dinode i_di; /* Dinode Structure */
};
#define GFS_GHASH_SHIFT (13)
#define GFS_GHASH_SIZE (1 << GFS_GHASH_SHIFT)
#define GFS_GHASH_MASK (GFS_GHASH_SIZE - 1)
/* SBF => SUPER BLOCK FLAG */
#define SBF_RECONSTRUCT_JOURNALS (1)
struct fs_sbd
{
struct gfs_sb sd_sb; /* Super Block */
int sd_diskfd;
uint32 sd_flags;
char sd_fsname[256];
/* Special inodes */
fs_inode_t *sd_lf_dip; /* lost-n-found dir inode */
fs_inode_t *sd_riinode; /* rindex inode */
fs_inode_t *sd_rooti; /* FS's root inode */
fs_inode_t *sd_jiinode; /* jindex inode */
fs_inode_t *sd_qinode; /* quota inode */
fs_inode_t *sd_linode; /* license inode */
/* rgrp stuff */
osi_list_t sd_rglist; /* List of resource groups */
unsigned int sd_rgcount; /* Count of resource groups */
/* journal stuff */
unsigned int sd_journals; /* Number of journals in the FS */
struct gfs_jindex *sd_jindex; /* Array of Jindex structs for this FS's journals */
struct gfs_jindex sd_jdesc; /* Jindex struct for this machine's journal */
/* Constants computed on mount */
uint32 sd_fsb2bb_shift; /* Shift FS Block numbers to the left by
this to get buffer cache blocks */
uint32 sd_diptrs; /* Number of pointers in a dinode */
uint32 sd_inptrs; /* Number of pointers in a indirect block */
uint32 sd_jbsize; /* Size of a journaled data block */
uint32 sd_hash_bsize; /* sizeof(exhash block) */
uint32 sd_hash_ptrs; /* Number of points in a hash block */
uint32 sd_max_height; /* Maximum height of a file's metadata tree */
uint64 sd_heightsize[GFS_MAX_META_HEIGHT];
uint32 sd_max_jheight; /* Max height of a journaled file's metadata tree */
uint64 sd_jheightsize[GFS_MAX_META_HEIGHT];
uint64 sd_last_fs_block;
uint64 sd_last_data_block;
uint64 sd_first_data_block;
/* dirent list contains blk #'s of inodes that have more than one dirent **
** associated with them. This does not include . and .. */
osi_list_t sd_dirent_list;
/* nlink list contains blk #'s of inodes that have link counts greater **
** than 1. This does not include directories, so it is hard linked files*/
osi_list_t sd_nlink_list;
/* bitmaps is an extra bitmap that is tracked by gfsck and compared to **
** what is on disk and maintained in the rgrps. */
osi_list_t sd_bitmaps;
};
#endif /* __INCORE_DOT_H__ */

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