162306a36Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 262306a36Sopenharmony_ci#ifndef _OMFS_H 362306a36Sopenharmony_ci#define _OMFS_H 462306a36Sopenharmony_ci 562306a36Sopenharmony_ci#include <linux/module.h> 662306a36Sopenharmony_ci#include <linux/fs.h> 762306a36Sopenharmony_ci 862306a36Sopenharmony_ci#include "omfs_fs.h" 962306a36Sopenharmony_ci 1062306a36Sopenharmony_ci/* In-memory structures */ 1162306a36Sopenharmony_cistruct omfs_sb_info { 1262306a36Sopenharmony_ci u64 s_num_blocks; 1362306a36Sopenharmony_ci u64 s_bitmap_ino; 1462306a36Sopenharmony_ci u64 s_root_ino; 1562306a36Sopenharmony_ci u32 s_blocksize; 1662306a36Sopenharmony_ci u32 s_mirrors; 1762306a36Sopenharmony_ci u32 s_sys_blocksize; 1862306a36Sopenharmony_ci u32 s_clustersize; 1962306a36Sopenharmony_ci int s_block_shift; 2062306a36Sopenharmony_ci unsigned long **s_imap; 2162306a36Sopenharmony_ci int s_imap_size; 2262306a36Sopenharmony_ci struct mutex s_bitmap_lock; 2362306a36Sopenharmony_ci kuid_t s_uid; 2462306a36Sopenharmony_ci kgid_t s_gid; 2562306a36Sopenharmony_ci int s_dmask; 2662306a36Sopenharmony_ci int s_fmask; 2762306a36Sopenharmony_ci}; 2862306a36Sopenharmony_ci 2962306a36Sopenharmony_ci/* convert a cluster number to a scaled block number */ 3062306a36Sopenharmony_cistatic inline sector_t clus_to_blk(struct omfs_sb_info *sbi, sector_t block) 3162306a36Sopenharmony_ci{ 3262306a36Sopenharmony_ci return block << sbi->s_block_shift; 3362306a36Sopenharmony_ci} 3462306a36Sopenharmony_ci 3562306a36Sopenharmony_cistatic inline struct omfs_sb_info *OMFS_SB(struct super_block *sb) 3662306a36Sopenharmony_ci{ 3762306a36Sopenharmony_ci return sb->s_fs_info; 3862306a36Sopenharmony_ci} 3962306a36Sopenharmony_ci 4062306a36Sopenharmony_ci/* bitmap.c */ 4162306a36Sopenharmony_ciextern unsigned long omfs_count_free(struct super_block *sb); 4262306a36Sopenharmony_ciextern int omfs_allocate_block(struct super_block *sb, u64 block); 4362306a36Sopenharmony_ciextern int omfs_allocate_range(struct super_block *sb, int min_request, 4462306a36Sopenharmony_ci int max_request, u64 *return_block, int *return_size); 4562306a36Sopenharmony_ciextern int omfs_clear_range(struct super_block *sb, u64 block, int count); 4662306a36Sopenharmony_ci 4762306a36Sopenharmony_ci/* dir.c */ 4862306a36Sopenharmony_ciextern const struct file_operations omfs_dir_operations; 4962306a36Sopenharmony_ciextern const struct inode_operations omfs_dir_inops; 5062306a36Sopenharmony_ciextern int omfs_make_empty(struct inode *inode, struct super_block *sb); 5162306a36Sopenharmony_ciextern int omfs_is_bad(struct omfs_sb_info *sbi, struct omfs_header *header, 5262306a36Sopenharmony_ci u64 fsblock); 5362306a36Sopenharmony_ci 5462306a36Sopenharmony_ci/* file.c */ 5562306a36Sopenharmony_ciextern const struct file_operations omfs_file_operations; 5662306a36Sopenharmony_ciextern const struct inode_operations omfs_file_inops; 5762306a36Sopenharmony_ciextern const struct address_space_operations omfs_aops; 5862306a36Sopenharmony_ciextern void omfs_make_empty_table(struct buffer_head *bh, int offset); 5962306a36Sopenharmony_ciextern int omfs_shrink_inode(struct inode *inode); 6062306a36Sopenharmony_ci 6162306a36Sopenharmony_ci/* inode.c */ 6262306a36Sopenharmony_ciextern struct buffer_head *omfs_bread(struct super_block *sb, sector_t block); 6362306a36Sopenharmony_ciextern struct inode *omfs_iget(struct super_block *sb, ino_t inode); 6462306a36Sopenharmony_ciextern struct inode *omfs_new_inode(struct inode *dir, umode_t mode); 6562306a36Sopenharmony_ciextern int omfs_reserve_block(struct super_block *sb, sector_t block); 6662306a36Sopenharmony_ciextern int omfs_find_empty_block(struct super_block *sb, int mode, ino_t *ino); 6762306a36Sopenharmony_ciextern int omfs_sync_inode(struct inode *inode); 6862306a36Sopenharmony_ci 6962306a36Sopenharmony_ci#endif 70