#include <linux/fs.h>
  #include <linux/pagemap.h>
  #include <linux/minix_fs.h>
  
  /*
   * change the define below to 0 if you want names > info->s_namelen chars to be
   * truncated. Else they will be disallowed (ENAMETOOLONG).
   */
  #define NO_TRUNCATE 1

  #define INODE_VERSION(inode)	minix_sb(inode->i_sb)->s_version

  #define MINIX_V1		0x0001		/* original minix fs */
  #define MINIX_V2		0x0002		/* minix V2 fs */

  #define MINIX_V3		0x0003		/* minix V3 fs */

  
  /*
   * minix fs inode data in memory
   */
  struct minix_inode_info {
  	union {
  		__u16 i1_data[16];
  		__u32 i2_data[16];
  	} u;
  	struct inode vfs_inode;
  };
  
  /*
   * minix super-block data in memory
   */
  struct minix_sb_info {
  	unsigned long s_ninodes;
  	unsigned long s_nzones;
  	unsigned long s_imap_blocks;
  	unsigned long s_zmap_blocks;
  	unsigned long s_firstdatazone;
  	unsigned long s_log_zone_size;
  	unsigned long s_max_size;
  	int s_dirsize;
  	int s_namelen;
  	int s_link_max;
  	struct buffer_head ** s_imap;
  	struct buffer_head ** s_zmap;
  	struct buffer_head * s_sbh;
  	struct minix_super_block * s_ms;
  	unsigned short s_mount_state;
  	unsigned short s_version;
  };
  
  extern struct minix_inode * minix_V1_raw_inode(struct super_block *, ino_t, struct buffer_head **);
  extern struct minix2_inode * minix_V2_raw_inode(struct super_block *, ino_t, struct buffer_head **);
  extern struct inode * minix_new_inode(const struct inode * dir, int * error);
  extern void minix_free_inode(struct inode * inode);
  extern unsigned long minix_count_free_inodes(struct minix_sb_info *sbi);
  extern int minix_new_block(struct inode * inode);

  extern void minix_free_block(struct inode *inode, unsigned long block);

  extern unsigned long minix_count_free_blocks(struct minix_sb_info *sbi);

  extern int minix_getattr(struct vfsmount *, struct dentry *, struct kstat *);

  extern void V1_minix_truncate(struct inode *);
  extern void V2_minix_truncate(struct inode *);
  extern void minix_truncate(struct inode *);
  extern int minix_sync_inode(struct inode *);
  extern void minix_set_inode(struct inode *, dev_t);
  extern int V1_minix_get_block(struct inode *, long, struct buffer_head *, int);
  extern int V2_minix_get_block(struct inode *, long, struct buffer_head *, int);

  extern unsigned V1_minix_blocks(loff_t, struct super_block *);
  extern unsigned V2_minix_blocks(loff_t, struct super_block *);

  
  extern struct minix_dir_entry *minix_find_entry(struct dentry*, struct page**);
  extern int minix_add_link(struct dentry*, struct inode*);
  extern int minix_delete_entry(struct minix_dir_entry*, struct page*);
  extern int minix_make_empty(struct inode*, struct inode*);
  extern int minix_empty_dir(struct inode*);
  extern void minix_set_link(struct minix_dir_entry*, struct page*, struct inode*);
  extern struct minix_dir_entry *minix_dotdot(struct inode*, struct page**);
  extern ino_t minix_inode_by_name(struct dentry*);

  extern int minix_sync_file(struct file *, struct dentry *, int);

  extern const struct inode_operations minix_file_inode_operations;
  extern const struct inode_operations minix_dir_inode_operations;

  extern const struct file_operations minix_file_operations;
  extern const struct file_operations minix_dir_operations;

  extern struct dentry_operations minix_dentry_operations;
  
  static inline struct minix_sb_info *minix_sb(struct super_block *sb)
  {
  	return sb->s_fs_info;
  }
  
  static inline struct minix_inode_info *minix_i(struct inode *inode)
  {
  	return list_entry(inode, struct minix_inode_info, vfs_inode);
  }