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 69