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 */ 10 struct 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 */ 29 static inline sector_t clus_to_blk(struct omfs_sb_info *sbi, sector_t block) 30 { 31 return block << sbi->s_block_shift; 32 } 33 34 static inline struct omfs_sb_info *OMFS_SB(struct super_block *sb) 35 { 36 return sb->s_fs_info; 37 } 38 39 /* bitmap.c */ 40 extern unsigned long omfs_count_free(struct super_block *sb); 41 extern int omfs_allocate_block(struct super_block *sb, u64 block); 42 extern int omfs_allocate_range(struct super_block *sb, int min_request, 43 int max_request, u64 *return_block, int *return_size); 44 extern int omfs_clear_range(struct super_block *sb, u64 block, int count); 45 46 /* dir.c */ 47 extern struct file_operations omfs_dir_operations; 48 extern struct inode_operations omfs_dir_inops; 49 extern int omfs_make_empty(struct inode *inode, struct super_block *sb); 50 extern int omfs_is_bad(struct omfs_sb_info *sbi, struct omfs_header *header, 51 u64 fsblock); 52 53 /* file.c */ 54 extern struct file_operations omfs_file_operations; 55 extern struct inode_operations omfs_file_inops; 56 extern struct address_space_operations omfs_aops; 57 extern void omfs_make_empty_table(struct buffer_head *bh, int offset); 58 extern int omfs_shrink_inode(struct inode *inode); 59 60 /* inode.c */ 61 extern struct inode *omfs_iget(struct super_block *sb, ino_t inode); 62 extern struct inode *omfs_new_inode(struct inode *dir, int mode); 63 extern int omfs_reserve_block(struct super_block *sb, sector_t block); 64 extern int omfs_find_empty_block(struct super_block *sb, int mode, ino_t *ino); 65 extern int omfs_sync_inode(struct inode *inode); 66 67 #endif 68