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 */ 16 struct 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 */ 27 struct 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 46 extern struct inode *minix_iget(struct super_block *, unsigned long); 47 extern struct minix_inode * minix_V1_raw_inode(struct super_block *, ino_t, struct buffer_head **); 48 extern struct minix2_inode * minix_V2_raw_inode(struct super_block *, ino_t, struct buffer_head **); 49 extern struct inode * minix_new_inode(const struct inode * dir, int * error); 50 extern void minix_free_inode(struct inode * inode); 51 extern unsigned long minix_count_free_inodes(struct minix_sb_info *sbi); 52 extern int minix_new_block(struct inode * inode); 53 extern void minix_free_block(struct inode *inode, unsigned long block); 54 extern unsigned long minix_count_free_blocks(struct minix_sb_info *sbi); 55 extern int minix_getattr(struct vfsmount *, struct dentry *, struct kstat *); 56 extern int __minix_write_begin(struct file *file, struct address_space *mapping, 57 loff_t pos, unsigned len, unsigned flags, 58 struct page **pagep, void **fsdata); 59 60 extern void V1_minix_truncate(struct inode *); 61 extern void V2_minix_truncate(struct inode *); 62 extern void minix_truncate(struct inode *); 63 extern void minix_set_inode(struct inode *, dev_t); 64 extern int V1_minix_get_block(struct inode *, long, struct buffer_head *, int); 65 extern int V2_minix_get_block(struct inode *, long, struct buffer_head *, int); 66 extern unsigned V1_minix_blocks(loff_t, struct super_block *); 67 extern unsigned V2_minix_blocks(loff_t, struct super_block *); 68 69 extern struct minix_dir_entry *minix_find_entry(struct dentry*, struct page**); 70 extern int minix_add_link(struct dentry*, struct inode*); 71 extern int minix_delete_entry(struct minix_dir_entry*, struct page*); 72 extern int minix_make_empty(struct inode*, struct inode*); 73 extern int minix_empty_dir(struct inode*); 74 extern void minix_set_link(struct minix_dir_entry*, struct page*, struct inode*); 75 extern struct minix_dir_entry *minix_dotdot(struct inode*, struct page**); 76 extern ino_t minix_inode_by_name(struct dentry*); 77 78 extern const struct inode_operations minix_file_inode_operations; 79 extern const struct inode_operations minix_dir_inode_operations; 80 extern const struct file_operations minix_file_operations; 81 extern const struct file_operations minix_dir_operations; 82 83 static inline struct minix_sb_info *minix_sb(struct super_block *sb) 84 { 85 return sb->s_fs_info; 86 } 87 88 static inline struct minix_inode_info *minix_i(struct inode *inode) 89 { 90 return list_entry(inode, struct minix_inode_info, vfs_inode); 91 } 92 93 #endif /* FS_MINIX_H */ 94