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	kuid_t s_uid;
23	kgid_t 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 */
47extern const struct file_operations omfs_dir_operations;
48extern const struct inode_operations omfs_dir_inops;
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 */
54extern const struct file_operations omfs_file_operations;
55extern const struct inode_operations omfs_file_inops;
56extern const struct address_space_operations omfs_aops;
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 buffer_head *omfs_bread(struct super_block *sb, sector_t block);
62extern struct inode *omfs_iget(struct super_block *sb, ino_t inode);
63extern struct inode *omfs_new_inode(struct inode *dir, umode_t mode);
64extern int omfs_reserve_block(struct super_block *sb, sector_t block);
65extern int omfs_find_empty_block(struct super_block *sb, int mode, ino_t *ino);
66extern int omfs_sync_inode(struct inode *inode);
67
68#endif

 1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef _OMFS_H
 3#define _OMFS_H
 4
 5#include <linux/module.h>
 6#include <linux/fs.h>
 7
 8#include "omfs_fs.h"
 9
10/* In-memory structures */
11struct omfs_sb_info {
12	u64 s_num_blocks;
13	u64 s_bitmap_ino;
14	u64 s_root_ino;
15	u32 s_blocksize;
16	u32 s_mirrors;
17	u32 s_sys_blocksize;
18	u32 s_clustersize;
19	int s_block_shift;
20	unsigned long **s_imap;
21	int s_imap_size;
22	struct mutex s_bitmap_lock;
23	kuid_t s_uid;
24	kgid_t s_gid;
25	int s_dmask;
26	int s_fmask;
27};
28
29/* convert a cluster number to a scaled block number */
30static inline sector_t clus_to_blk(struct omfs_sb_info *sbi, sector_t block)
31{
32	return block << sbi->s_block_shift;
33}
34
35static inline struct omfs_sb_info *OMFS_SB(struct super_block *sb)
36{
37	return sb->s_fs_info;
38}
39
40/* bitmap.c */
41extern unsigned long omfs_count_free(struct super_block *sb);
42extern int omfs_allocate_block(struct super_block *sb, u64 block);
43extern int omfs_allocate_range(struct super_block *sb, int min_request,
44			int max_request, u64 *return_block, int *return_size);
45extern int omfs_clear_range(struct super_block *sb, u64 block, int count);
46
47/* dir.c */
48extern const struct file_operations omfs_dir_operations;
49extern const struct inode_operations omfs_dir_inops;
50extern int omfs_make_empty(struct inode *inode, struct super_block *sb);
51extern int omfs_is_bad(struct omfs_sb_info *sbi, struct omfs_header *header,
52			u64 fsblock);
53
54/* file.c */
55extern const struct file_operations omfs_file_operations;
56extern const struct inode_operations omfs_file_inops;
57extern const struct address_space_operations omfs_aops;
58extern void omfs_make_empty_table(struct buffer_head *bh, int offset);
59extern int omfs_shrink_inode(struct inode *inode);
60
61/* inode.c */
62extern struct buffer_head *omfs_bread(struct super_block *sb, sector_t block);
63extern struct inode *omfs_iget(struct super_block *sb, ino_t inode);
64extern struct inode *omfs_new_inode(struct inode *dir, umode_t mode);
65extern int omfs_reserve_block(struct super_block *sb, sector_t block);
66extern int omfs_find_empty_block(struct super_block *sb, int mode, ino_t *ino);
67extern int omfs_sync_inode(struct inode *inode);
68
69#endif