1#ifndef FS_MINIX_H 2#define FS_MINIX_H 3 4#include <linux/fs.h> 5#include <linux/pagemap.h> 6#include <linux/minix_fs.h> 7 8#define INODE_VERSION(inode) minix_sb(inode->i_sb)->s_version 9#define MINIX_V1 0x0001 /* original minix fs */ 10#define MINIX_V2 0x0002 /* minix V2 fs */ 11#define MINIX_V3 0x0003 /* minix V3 fs */ 12 13/* 14 * minix fs inode data in memory 15 */ 16struct minix_inode_info { 17 union { 18 __u16 i1_data[16]; 19 __u32 i2_data[16]; 20 } u; 21 struct inode vfs_inode; 22}; 23 24/* 25 * minix super-block data in memory 26 */ 27struct minix_sb_info { 28 unsigned long s_ninodes; 29 unsigned long s_nzones; 30 unsigned long s_imap_blocks; 31 unsigned long s_zmap_blocks; 32 unsigned long s_firstdatazone; 33 unsigned long s_log_zone_size; 34 unsigned long s_max_size; 35 int s_dirsize; 36 int s_namelen; 37 int s_link_max; 38 struct buffer_head ** s_imap; 39 struct buffer_head ** s_zmap; 40 struct buffer_head * s_sbh; 41 struct minix_super_block * s_ms; 42 unsigned short s_mount_state; 43 unsigned short s_version; 44}; 45 46extern struct inode *minix_iget(struct super_block *, unsigned long); 47extern struct minix_inode * minix_V1_raw_inode(struct super_block *, ino_t, struct buffer_head **); 48extern struct minix2_inode * minix_V2_raw_inode(struct super_block *, ino_t, struct buffer_head **); 49extern struct inode * minix_new_inode(const struct inode *, int, int *); 50extern void minix_free_inode(struct inode * inode); 51extern unsigned long minix_count_free_inodes(struct minix_sb_info *sbi); 52extern int minix_new_block(struct inode * inode); 53extern void minix_free_block(struct inode *inode, unsigned long block); 54extern unsigned long minix_count_free_blocks(struct minix_sb_info *sbi); 55extern int minix_getattr(struct vfsmount *, struct dentry *, struct kstat *); 56extern int minix_prepare_chunk(struct page *page, loff_t pos, unsigned len); 57 58extern void V1_minix_truncate(struct inode *); 59extern void V2_minix_truncate(struct inode *); 60extern void minix_truncate(struct inode *); 61extern void minix_set_inode(struct inode *, dev_t); 62extern int V1_minix_get_block(struct inode *, long, struct buffer_head *, int); 63extern int V2_minix_get_block(struct inode *, long, struct buffer_head *, int); 64extern unsigned V1_minix_blocks(loff_t, struct super_block *); 65extern unsigned V2_minix_blocks(loff_t, struct super_block *); 66 67extern struct minix_dir_entry *minix_find_entry(struct dentry*, struct page**); 68extern int minix_add_link(struct dentry*, struct inode*); 69extern int minix_delete_entry(struct minix_dir_entry*, struct page*); 70extern int minix_make_empty(struct inode*, struct inode*); 71extern int minix_empty_dir(struct inode*); 72extern void minix_set_link(struct minix_dir_entry*, struct page*, struct inode*); 73extern struct minix_dir_entry *minix_dotdot(struct inode*, struct page**); 74extern ino_t minix_inode_by_name(struct dentry*); 75 76extern const struct inode_operations minix_file_inode_operations; 77extern const struct inode_operations minix_dir_inode_operations; 78extern const struct file_operations minix_file_operations; 79extern const struct file_operations minix_dir_operations; 80 81static inline struct minix_sb_info *minix_sb(struct super_block *sb) 82{ 83 return sb->s_fs_info; 84} 85 86static inline struct minix_inode_info *minix_i(struct inode *inode) 87{ 88 return list_entry(inode, struct minix_inode_info, vfs_inode); 89} 90 91#endif /* FS_MINIX_H */ 92