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