#include <linux/fs.h>
  #include <linux/qnx4_fs.h>
  
  #define QNX4_DEBUG 0
  
  #if QNX4_DEBUG
  #define QNX4DEBUG(X) printk X
  #else
  #define QNX4DEBUG(X) (void) 0
  #endif
  
  struct qnx4_sb_info {
  	struct buffer_head	*sb_buf;	/* superblock buffer */
  	struct qnx4_super_block	*sb;		/* our superblock */
  	unsigned int		Version;	/* may be useful */
  	struct qnx4_inode_entry	*BitMap;	/* useful */
  };
  
  struct qnx4_inode_info {
  	struct qnx4_inode_entry raw;
  	loff_t mmu_private;
  	struct inode vfs_inode;
  };
  
  extern struct inode *qnx4_iget(struct super_block *, unsigned long);
  extern struct dentry *qnx4_lookup(struct inode *dir, struct dentry *dentry, struct nameidata *nd);
  extern unsigned long qnx4_count_free_blocks(struct super_block *sb);
  extern unsigned long qnx4_block_map(struct inode *inode, long iblock);
  
  extern struct buffer_head *qnx4_bread(struct inode *, int, int);

  extern const struct inode_operations qnx4_dir_inode_operations;

  extern const struct file_operations qnx4_dir_operations;
  extern int qnx4_is_free(struct super_block *sb, long block);

  
  static inline struct qnx4_sb_info *qnx4_sb(struct super_block *sb)
  {
  	return sb->s_fs_info;
  }
  
  static inline struct qnx4_inode_info *qnx4_i(struct inode *inode)
  {
  	return container_of(inode, struct qnx4_inode_info, vfs_inode);
  }
  
  static inline struct qnx4_inode_entry *qnx4_raw_inode(struct inode *inode)
  {
  	return &qnx4_i(inode)->raw;
  }