#ifndef _DISK_H
#define _DISK_H

#include  <linux/ext2_fs.h>

struct mem_inode_ind_s {
	struct mem_inode_ind_s *next;
	int level;
	int n;
	__u32	to_block;
	char data[0];
};

struct mem_inode_s {
	__u32 inode_nr;
#define EXT2_UNKNOWN_INO 0
	struct ext2_inode inode;
	struct mem_inode_s * next;
	__u32	block;
	int	block_offset;
	__u32	to_block;
	int ok;
	int need_to_write;
	struct mem_inode_ind_s *indirect;
};

extern struct mem_inode_s * mem_inodes;
int find_inodes(int fd);
int is_inode_table( __u32 block );

struct mem_inode_s *find_inode_by_number( int n );
struct mem_inode_s *find_inode_by_firstblock( __u32 block );
struct mem_inode_s *find_inode_by_direct_block( __u32 block );
int add_block_to_inode( struct mem_inode_s *inode, __u32 block );
int write_inodes( int fd );
int write_super( int fd );

/* ------ directories --------- */
struct mem_dir_s {
	struct mem_dir_s	*next;
	__u32	block;
	__u32	inode_nr;
	__u32	parent_nr;
	struct mem_inode_s *inode;
	__u32	to_block;
	int ok;
	int need_to_write;
	char data[0];
};
int find_dirs(int fd);
extern struct mem_dir_s *mem_dirs_first, *mem_dirs, *mem_root_dir_first;

int is_in_dir( char *d, __u32 inum );
int write_dirs( int fd );

/* ------- salvage ------- */

int fill_blokmap( int fd );
int salvage_dir_blocks( void );

int salvage_dir_inodes( void );
int salvage_next_dir_blocks( void );

#endif