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gerrit-public.fairphone.software / kernel / msm-4.19 / 9af13be2acac60ca5593e41a601d4a5b6bc35302 / . / fs / omfs / omfs.h
blob: ebe2fdbe535ec07f95aa0981e2cc53f12d912cdf [file] [log] [blame]
Bob Copeland1b002d72008-07-25 19:45:15 -0700[diff] [blame]1#ifndef _OMFS_H
2#define _OMFS_H
3
4#include <linux/module.h>
5#include <linux/fs.h>
6
7#include "omfs_fs.h"
8
9/* In-memory structures */
10struct omfs_sb_info {
11 u64 s_num_blocks;
12 u64 s_bitmap_ino;
13 u64 s_root_ino;
14 u32 s_blocksize;
15 u32 s_mirrors;
16 u32 s_sys_blocksize;
17 u32 s_clustersize;
18 int s_block_shift;
19 unsigned long **s_imap;
20 int s_imap_size;
21 struct mutex s_bitmap_lock;
22 int s_uid;
23 int s_gid;
24 int s_dmask;
25 int s_fmask;
26};
27
28/* convert a cluster number to a scaled block number */
29static inline sector_t clus_to_blk(struct omfs_sb_info *sbi, sector_t block)
30{
31 return block << sbi->s_block_shift;
32}
33
34static inline struct omfs_sb_info *OMFS_SB(struct super_block *sb)
35{
36 return sb->s_fs_info;
37}
38
39/* bitmap.c */
40extern unsigned long omfs_count_free(struct super_block *sb);
41extern int omfs_allocate_block(struct super_block *sb, u64 block);
42extern int omfs_allocate_range(struct super_block *sb, int min_request,
43 int max_request, u64 *return_block, int *return_size);
44extern int omfs_clear_range(struct super_block *sb, u64 block, int count);
45
46/* dir.c */
Alexey Dobriyan828c0952009-10-01 15:43:56 -0700[diff] [blame]47extern const struct file_operations omfs_dir_operations;
Alexey Dobriyan6e1d5dc2009-09-21 17:01:11 -0700[diff] [blame]48extern const struct inode_operations omfs_dir_inops;
Bob Copeland1b002d72008-07-25 19:45:15 -0700[diff] [blame]49extern int omfs_make_empty(struct inode *inode, struct super_block *sb);
50extern int omfs_is_bad(struct omfs_sb_info *sbi, struct omfs_header *header,
51 u64 fsblock);
52
53/* file.c */
Alexey Dobriyan828c0952009-10-01 15:43:56 -0700[diff] [blame]54extern const struct file_operations omfs_file_operations;
Alexey Dobriyan6e1d5dc2009-09-21 17:01:11 -0700[diff] [blame]55extern const struct inode_operations omfs_file_inops;
Alexey Dobriyan7f094102009-09-21 17:01:10 -0700[diff] [blame]56extern const struct address_space_operations omfs_aops;
Bob Copeland1b002d72008-07-25 19:45:15 -0700[diff] [blame]57extern void omfs_make_empty_table(struct buffer_head *bh, int offset);
58extern int omfs_shrink_inode(struct inode *inode);
59
60/* inode.c */
61extern struct inode *omfs_iget(struct super_block *sb, ino_t inode);
62extern struct inode *omfs_new_inode(struct inode *dir, int mode);
63extern int omfs_reserve_block(struct super_block *sb, sector_t block);
64extern int omfs_find_empty_block(struct super_block *sb, int mode, ino_t *ino);
65extern int omfs_sync_inode(struct inode *inode);
66
67#endif