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69 lines
2.1 KiB
69 lines
2.1 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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#ifndef _OMFS_H |
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#define _OMFS_H |
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#include <linux/module.h> |
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#include <linux/fs.h> |
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#include "omfs_fs.h" |
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/* In-memory structures */ |
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struct omfs_sb_info { |
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u64 s_num_blocks; |
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u64 s_bitmap_ino; |
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u64 s_root_ino; |
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u32 s_blocksize; |
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u32 s_mirrors; |
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u32 s_sys_blocksize; |
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u32 s_clustersize; |
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int s_block_shift; |
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unsigned long **s_imap; |
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int s_imap_size; |
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struct mutex s_bitmap_lock; |
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kuid_t s_uid; |
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kgid_t s_gid; |
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int s_dmask; |
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int s_fmask; |
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}; |
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/* convert a cluster number to a scaled block number */ |
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static inline sector_t clus_to_blk(struct omfs_sb_info *sbi, sector_t block) |
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{ |
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return block << sbi->s_block_shift; |
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} |
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static inline struct omfs_sb_info *OMFS_SB(struct super_block *sb) |
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{ |
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return sb->s_fs_info; |
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} |
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/* bitmap.c */ |
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extern unsigned long omfs_count_free(struct super_block *sb); |
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extern int omfs_allocate_block(struct super_block *sb, u64 block); |
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extern int omfs_allocate_range(struct super_block *sb, int min_request, |
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int max_request, u64 *return_block, int *return_size); |
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extern int omfs_clear_range(struct super_block *sb, u64 block, int count); |
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/* dir.c */ |
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extern const struct file_operations omfs_dir_operations; |
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extern const struct inode_operations omfs_dir_inops; |
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extern int omfs_make_empty(struct inode *inode, struct super_block *sb); |
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extern int omfs_is_bad(struct omfs_sb_info *sbi, struct omfs_header *header, |
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u64 fsblock); |
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/* file.c */ |
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extern const struct file_operations omfs_file_operations; |
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extern const struct inode_operations omfs_file_inops; |
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extern const struct address_space_operations omfs_aops; |
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extern void omfs_make_empty_table(struct buffer_head *bh, int offset); |
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extern int omfs_shrink_inode(struct inode *inode); |
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/* inode.c */ |
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extern struct buffer_head *omfs_bread(struct super_block *sb, sector_t block); |
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extern struct inode *omfs_iget(struct super_block *sb, ino_t inode); |
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extern struct inode *omfs_new_inode(struct inode *dir, umode_t mode); |
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extern int omfs_reserve_block(struct super_block *sb, sector_t block); |
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extern int omfs_find_empty_block(struct super_block *sb, int mode, ino_t *ino); |
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extern int omfs_sync_inode(struct inode *inode); |
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#endif
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