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 */ |
11 | struct 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 */ |
30 | static inline sector_t clus_to_blk(struct omfs_sb_info *sbi, sector_t block) |
31 | { |
32 | return block << sbi->s_block_shift; |
33 | } |
34 | |
35 | static inline struct omfs_sb_info *OMFS_SB(struct super_block *sb) |
36 | { |
37 | return sb->s_fs_info; |
38 | } |
39 | |
40 | /* bitmap.c */ |
41 | extern unsigned long omfs_count_free(struct super_block *sb); |
42 | extern int omfs_allocate_block(struct super_block *sb, u64 block); |
43 | extern int omfs_allocate_range(struct super_block *sb, int min_request, |
44 | int max_request, u64 *return_block, int *return_size); |
45 | extern int omfs_clear_range(struct super_block *sb, u64 block, int count); |
46 | |
47 | /* dir.c */ |
48 | extern const struct file_operations omfs_dir_operations; |
49 | extern const struct inode_operations omfs_dir_inops; |
50 | extern int omfs_make_empty(struct inode *inode, struct super_block *sb); |
51 | extern int omfs_is_bad(struct omfs_sb_info *sbi, struct omfs_header *, |
52 | u64 fsblock); |
53 | |
54 | /* file.c */ |
55 | extern const struct file_operations omfs_file_operations; |
56 | extern const struct inode_operations omfs_file_inops; |
57 | extern const struct address_space_operations omfs_aops; |
58 | extern void omfs_make_empty_table(struct buffer_head *bh, int offset); |
59 | extern int omfs_shrink_inode(struct inode *inode); |
60 | |
61 | /* inode.c */ |
62 | extern struct buffer_head *omfs_bread(struct super_block *sb, sector_t block); |
63 | extern struct inode *omfs_iget(struct super_block *sb, ino_t inode); |
64 | extern struct inode *omfs_new_inode(struct inode *dir, umode_t mode); |
65 | extern int omfs_reserve_block(struct super_block *sb, sector_t block); |
66 | extern int omfs_find_empty_block(struct super_block *sb, int mode, ino_t *ino); |
67 | extern int omfs_sync_inode(struct inode *inode); |
68 | |
69 | #endif |
70 | |