/**
 * fsck.h
 *
 * Copyright (c) 2013 Samsung Electronics Co., Ltd.
 *             http://www.samsung.com/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
#ifndef _FSCK_H_
#define _FSCK_H_

#include "f2fs.h"

/* fsck.c */
struct orphan_info {
	u32 nr_inodes;
	u32 *ino_list;
};

struct f2fs_fsck {
	struct f2fs_sb_info sbi;

	struct orphan_info orphani;
	struct chk_result {
		u64 valid_blk_cnt;
		u32 valid_nat_entry_cnt;
		u32 valid_node_cnt;
		u32 valid_inode_cnt;
		u32 multi_hard_link_files;
		u64 sit_valid_blocks;
		u32 sit_free_segs;
		u32 free_segs;
	} chk;

	struct hard_link_node *hard_link_list_head;

	char *main_seg_usage;
	char *main_area_bitmap;
	char *nat_area_bitmap;
	char *sit_area_bitmap;

	u64 main_area_bitmap_sz;
	u32 nat_area_bitmap_sz;
	u32 sit_area_bitmap_sz;

	u64 nr_main_blks;
	u32 nr_nat_entries;

	u32 dentry_depth;
};

#define BLOCK_SZ		4096
struct block {
	unsigned char buf[BLOCK_SZ];
};

enum NODE_TYPE {
	TYPE_INODE = 37,
	TYPE_DIRECT_NODE = 43,
	TYPE_INDIRECT_NODE = 53,
	TYPE_DOUBLE_INDIRECT_NODE = 67,
	TYPE_XATTR = 77
};

struct hard_link_node {
	u32 nid;
	u32 links;
	u32 actual_links;
	struct hard_link_node *next;
};

enum seg_type {
	SEG_TYPE_DATA,
	SEG_TYPE_CUR_DATA,
	SEG_TYPE_NODE,
	SEG_TYPE_CUR_NODE,
	SEG_TYPE_MAX,
};

extern void fsck_chk_orphan_node(struct f2fs_sb_info *);
extern int fsck_chk_node_blk(struct f2fs_sb_info *, struct f2fs_inode *, u32,
		u8 *, enum FILE_TYPE, enum NODE_TYPE, u32 *);
extern void fsck_chk_inode_blk(struct f2fs_sb_info *, u32, enum FILE_TYPE,
		struct f2fs_node *, u32 *, struct node_info *);
extern int fsck_chk_dnode_blk(struct f2fs_sb_info *, struct f2fs_inode *,
		u32, enum FILE_TYPE, struct f2fs_node *, u32 *,
		struct node_info *);
extern int fsck_chk_idnode_blk(struct f2fs_sb_info *, struct f2fs_inode *,
		enum FILE_TYPE, struct f2fs_node *, u32 *);
extern int fsck_chk_didnode_blk(struct f2fs_sb_info *, struct f2fs_inode *,
		enum FILE_TYPE, struct f2fs_node *, u32 *);
extern int fsck_chk_data_blk(struct f2fs_sb_info *sbi, u32, u32 *, u32 *,
		int, enum FILE_TYPE, u32, u16, u8);
extern int fsck_chk_dentry_blk(struct f2fs_sb_info *, u32, u32 *, u32 *, int);
int fsck_chk_inline_dentries(struct f2fs_sb_info *, struct f2fs_node *,
		u32 *, u32 *);

void print_cp_state(u32);
extern void print_node_info(struct f2fs_node *);
extern void print_inode_info(struct f2fs_inode *, int);
extern struct seg_entry *get_seg_entry(struct f2fs_sb_info *, unsigned int);
extern struct f2fs_summary_block *get_sum_block(struct f2fs_sb_info *,
				unsigned int, int *);
extern int get_sum_entry(struct f2fs_sb_info *, u32, struct f2fs_summary *);
extern void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *);
extern void nullify_nat_entry(struct f2fs_sb_info *, u32);
extern void rewrite_sit_area_bitmap(struct f2fs_sb_info *);
extern void build_nat_area_bitmap(struct f2fs_sb_info *);
extern void build_sit_area_bitmap(struct f2fs_sb_info *);
extern void fsck_init(struct f2fs_sb_info *);
extern int fsck_verify(struct f2fs_sb_info *);
extern void fsck_free(struct f2fs_sb_info *);
extern int f2fs_do_mount(struct f2fs_sb_info *);
extern void f2fs_do_umount(struct f2fs_sb_info *);

/* dump.c */
struct dump_option {
	nid_t nid;
	int start_sit;
	int end_sit;
	int start_ssa;
	int end_ssa;
	int32_t blk_addr;
};

extern void sit_dump(struct f2fs_sb_info *, int, int);
extern void ssa_dump(struct f2fs_sb_info *, int, int);
extern void dump_node(struct f2fs_sb_info *, nid_t);
extern int dump_info_from_blkaddr(struct f2fs_sb_info *, u32);

#endif /* _FSCK_H_ */