blob: dd064b86a8aa13b1b244d9f3ffca24d2ba7eb597 (
plain)
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
|
/*
* linux/include/linux/ext2_fs_sb.h
*
* Copyright (C) 1992, 1993, 1994, 1995
* Remy Card (card@masi.ibp.fr)
* Laboratoire MASI - Institut Blaise Pascal
* Universite Pierre et Marie Curie (Paris VI)
*
* from
*
* linux/include/linux/minix_fs_sb.h
*
* Copyright (C) 1991, 1992 Linus Torvalds
*/
#ifndef _LINUX_EXT2_FS_SB
#define _LINUX_EXT2_FS_SB
#include <linux/ext2_fs.h>
/*
* The following is not needed anymore since the descriptors buffer
* heads are now dynamically allocated
*/
/* #define EXT2_MAX_GROUP_DESC 8 */
#define EXT2_MAX_GROUP_LOADED 8
/*
* second extended-fs super-block data in memory
*/
struct ext2_sb_info {
unsigned long s_frag_size; /* Size of a fragment in bytes */
unsigned long s_frags_per_block;/* Number of fragments per block */
unsigned long s_inodes_per_block;/* Number of inodes per block */
unsigned long s_frags_per_group;/* Number of fragments in a group */
unsigned long s_blocks_per_group;/* Number of blocks in a group */
unsigned long s_inodes_per_group;/* Number of inodes in a group */
unsigned long s_itb_per_group; /* Number of inode table blocks per group */
unsigned long s_db_per_group; /* Number of descriptor blocks per group */
unsigned long s_desc_per_block; /* Number of group descriptors per block */
unsigned long s_groups_count; /* Number of groups in the fs */
struct buffer_head * s_sbh; /* Buffer containing the super block */
struct ext2_super_block * s_es; /* Pointer to the super block in the buffer */
struct buffer_head ** s_group_desc;
unsigned short s_loaded_inode_bitmaps;
unsigned short s_loaded_block_bitmaps;
unsigned long s_inode_bitmap_number[EXT2_MAX_GROUP_LOADED];
struct buffer_head * s_inode_bitmap[EXT2_MAX_GROUP_LOADED];
unsigned long s_block_bitmap_number[EXT2_MAX_GROUP_LOADED];
struct buffer_head * s_block_bitmap[EXT2_MAX_GROUP_LOADED];
int s_rename_lock;
struct wait_queue * s_rename_wait;
unsigned long s_mount_opt;
unsigned short s_resuid;
unsigned short s_resgid;
unsigned short s_mount_state;
unsigned short s_pad;
int s_addr_per_block_bits;
int s_desc_per_block_bits;
int s_inode_size;
int s_first_ino;
};
#endif /* _LINUX_EXT2_FS_SB */
|
