1 #include <linux/fs.h> 2 #include <linux/pagemap.h> 3 #include <linux/minix_fs.h> 4 5 /* 6 * change the define below to 0 if you want names > info->s_namelen chars to be 7 * truncated. Else they will be disallowed (ENAMETOOLONG). 8 */ 9 #define NO_TRUNCATE 1 10 11 #define INODE_VERSION(inode) minix_sb(inode->i_sb)->s_version 12 13 #define MINIX_V1 0x0001 /* original minix fs */ 14 #define MINIX_V2 0x0002 /* minix V2 fs */ 15 16 /* 17 * minix fs inode data in memory 18 */ 19 struct minix_inode_info { 20 union { 21 __u16 i1_data[16]; 22 __u32 i2_data[16]; 23 } u; 24 struct inode vfs_inode; 25 }; 26 27 /* 28 * minix super-block data in memory 29 */ 30 struct minix_sb_info { 31 unsigned long s_ninodes; 32 unsigned long s_nzones; 33 unsigned long s_imap_blocks; 34 unsigned long s_zmap_blocks; 35 unsigned long s_firstdatazone; 36 unsigned long s_log_zone_size; 37 unsigned long s_max_size; 38 int s_dirsize; 39 int s_namelen; 40 int s_link_max; 41 struct buffer_head ** s_imap; 42 struct buffer_head ** s_zmap; 43 struct buffer_head * s_sbh; 44 struct minix_super_block * s_ms; 45 unsigned short s_mount_state; 46 unsigned short s_version; 47 }; 48 49 extern struct minix_inode * minix_V1_raw_inode(struct super_block *, ino_t, struct buffer_head **); 50 extern struct minix2_inode * minix_V2_raw_inode(struct super_block *, ino_t, struct buffer_head **); 51 extern struct inode * minix_new_inode(const struct inode * dir, int * error); 52 extern void minix_free_inode(struct inode * inode); 53 extern unsigned long minix_count_free_inodes(struct minix_sb_info *sbi); 54 extern int minix_new_block(struct inode * inode); 55 extern void minix_free_block(struct inode * inode, int block); 56 extern unsigned long minix_count_free_blocks(struct minix_sb_info *sbi); 57 58 extern int minix_getattr(struct vfsmount *, struct dentry *, struct kstat *); 59 60 extern void V2_minix_truncate(struct inode *); 61 extern void V1_minix_truncate(struct inode *); 62 extern void V2_minix_truncate(struct inode *); 63 extern void minix_truncate(struct inode *); 64 extern int minix_sync_inode(struct inode *); 65 extern void minix_set_inode(struct inode *, dev_t); 66 extern int V1_minix_get_block(struct inode *, long, struct buffer_head *, int); 67 extern int V2_minix_get_block(struct inode *, long, struct buffer_head *, int); 68 extern unsigned V1_minix_blocks(loff_t); 69 extern unsigned V2_minix_blocks(loff_t); 70 71 extern struct minix_dir_entry *minix_find_entry(struct dentry*, struct page**); 72 extern int minix_add_link(struct dentry*, struct inode*); 73 extern int minix_delete_entry(struct minix_dir_entry*, struct page*); 74 extern int minix_make_empty(struct inode*, struct inode*); 75 extern int minix_empty_dir(struct inode*); 76 extern void minix_set_link(struct minix_dir_entry*, struct page*, struct inode*); 77 extern struct minix_dir_entry *minix_dotdot(struct inode*, struct page**); 78 extern ino_t minix_inode_by_name(struct dentry*); 79 80 extern int minix_sync_file(struct file *, struct dentry *, int); 81 82 extern struct inode_operations minix_file_inode_operations; 83 extern struct inode_operations minix_dir_inode_operations; 84 extern struct file_operations minix_file_operations; 85 extern struct file_operations minix_dir_operations; 86 extern struct dentry_operations minix_dentry_operations; 87 88 static inline struct minix_sb_info *minix_sb(struct super_block *sb) 89 { 90 return sb->s_fs_info; 91 } 92 93 static inline struct minix_inode_info *minix_i(struct inode *inode) 94 { 95 return list_entry(inode, struct minix_inode_info, vfs_inode); 96 } 97