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#define INODE_VERSION(inode) minix_sb(inode->i_sb)->s_version 11#define MINIX_V1 0x0001 /* original minix fs */ 12#define MINIX_V2 0x0002 /* minix V2 fs */ 13#define MINIX_V3 0x0003 /* minix V3 fs */ 14 15/* 16 * minix fs inode data in memory 17 */ 18struct minix_inode_info { 19 union { 20 __u16 i1_data[16]; 21 __u32 i2_data[16]; 22 } u; 23 struct inode vfs_inode; 24}; 25 26/* 27 * minix super-block data in memory 28 */ 29struct minix_sb_info { 30 unsigned long s_ninodes; 31 unsigned long s_nzones; 32 unsigned long s_imap_blocks; 33 unsigned long s_zmap_blocks; 34 unsigned long s_firstdatazone; 35 unsigned long s_log_zone_size; 36 unsigned long s_max_size; 37 int s_dirsize; 38 int s_namelen; 39 int s_link_max; 40 struct buffer_head ** s_imap; 41 struct buffer_head ** s_zmap; 42 struct buffer_head * s_sbh; 43 struct minix_super_block * s_ms; 44 unsigned short s_mount_state; 45 unsigned short s_version; 46}; 47 48extern struct minix_inode * minix_V1_raw_inode(struct super_block *, ino_t, struct buffer_head **); 49extern struct minix2_inode * minix_V2_raw_inode(struct super_block *, ino_t, struct buffer_head **); 50extern struct inode * minix_new_inode(const struct inode * dir, int * error); 51extern void minix_free_inode(struct inode * inode); 52extern unsigned long minix_count_free_inodes(struct minix_sb_info *sbi); 53extern int minix_new_block(struct inode * inode); 54extern void minix_free_block(struct inode *inode, unsigned long block); 55extern unsigned long minix_count_free_blocks(struct minix_sb_info *sbi); 56extern int minix_getattr(struct vfsmount *, struct dentry *, struct kstat *); 57 58extern void V1_minix_truncate(struct inode *); 59extern void V2_minix_truncate(struct inode *); 60extern void minix_truncate(struct inode *); 61extern int minix_sync_inode(struct inode *); 62extern void minix_set_inode(struct inode *, dev_t); 63extern int V1_minix_get_block(struct inode *, long, struct buffer_head *, int); 64extern int V2_minix_get_block(struct inode *, long, struct buffer_head *, int); 65extern unsigned V1_minix_blocks(loff_t, struct super_block *); 66extern unsigned V2_minix_blocks(loff_t, struct super_block *); 67 68extern struct minix_dir_entry *minix_find_entry(struct dentry*, struct page**); 69extern int minix_add_link(struct dentry*, struct inode*); 70extern int minix_delete_entry(struct minix_dir_entry*, struct page*); 71extern int minix_make_empty(struct inode*, struct inode*); 72extern int minix_empty_dir(struct inode*); 73extern void minix_set_link(struct minix_dir_entry*, struct page*, struct inode*); 74extern struct minix_dir_entry *minix_dotdot(struct inode*, struct page**); 75extern ino_t minix_inode_by_name(struct dentry*); 76extern int minix_sync_file(struct file *, struct dentry *, int); 77 78extern const struct inode_operations minix_file_inode_operations; 79extern const struct inode_operations minix_dir_inode_operations; 80extern const struct file_operations minix_file_operations; 81extern const struct file_operations minix_dir_operations; 82extern struct dentry_operations minix_dentry_operations; 83 84static inline struct minix_sb_info *minix_sb(struct super_block *sb) 85{ 86 return sb->s_fs_info; 87} 88 89static inline struct minix_inode_info *minix_i(struct inode *inode) 90{ 91 return list_entry(inode, struct minix_inode_info, vfs_inode); 92} 93