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      1 /**
      2  * fsck.h
      3  *
      4  * Copyright (c) 2013 Samsung Electronics Co., Ltd.
      5  *             http://www.samsung.com/
      6  *
      7  * This program is free software; you can redistribute it and/or modify
      8  * it under the terms of the GNU General Public License version 2 as
      9  * published by the Free Software Foundation.
     10  */
     11 #ifndef _FSCK_H_
     12 #define _FSCK_H_
     13 
     14 #include "f2fs.h"
     15 
     16 /* fsck.c */
     17 struct orphan_info {
     18 	u32 nr_inodes;
     19 	u32 *ino_list;
     20 };
     21 
     22 struct f2fs_fsck {
     23 	struct f2fs_sb_info sbi;
     24 
     25 	struct orphan_info orphani;
     26 	struct chk_result {
     27 		u64 valid_blk_cnt;
     28 		u32 valid_nat_entry_cnt;
     29 		u32 valid_node_cnt;
     30 		u32 valid_inode_cnt;
     31 		u32 multi_hard_link_files;
     32 		u64 sit_valid_blocks;
     33 		u32 sit_free_segs;
     34 	} chk;
     35 
     36 	struct hard_link_node *hard_link_list_head;
     37 
     38 	char *main_seg_usage;
     39 	char *main_area_bitmap;
     40 	char *nat_area_bitmap;
     41 	char *sit_area_bitmap;
     42 
     43 	u64 main_area_bitmap_sz;
     44 	u32 nat_area_bitmap_sz;
     45 	u32 sit_area_bitmap_sz;
     46 
     47 	u64 nr_main_blks;
     48 	u32 nr_nat_entries;
     49 
     50 	u32 dentry_depth;
     51 };
     52 
     53 #define BLOCK_SZ		4096
     54 struct block {
     55 	unsigned char buf[BLOCK_SZ];
     56 };
     57 
     58 enum NODE_TYPE {
     59 	TYPE_INODE = 37,
     60 	TYPE_DIRECT_NODE = 43,
     61 	TYPE_INDIRECT_NODE = 53,
     62 	TYPE_DOUBLE_INDIRECT_NODE = 67
     63 };
     64 
     65 struct hard_link_node {
     66 	u32 nid;
     67 	u32 links;
     68 	struct hard_link_node *next;
     69 };
     70 
     71 enum seg_type {
     72 	SEG_TYPE_DATA,
     73 	SEG_TYPE_CUR_DATA,
     74 	SEG_TYPE_NODE,
     75 	SEG_TYPE_CUR_NODE,
     76 	SEG_TYPE_MAX,
     77 };
     78 
     79 extern int fsck_chk_xattr_blk(struct f2fs_sb_info *sbi, u32 ino, u32 x_nid, u32 *blk_cnt);
     80 extern int fsck_chk_orphan_node(struct f2fs_sb_info *sbi);
     81 
     82 extern int fsck_chk_node_blk(struct f2fs_sb_info *sbi,
     83 		struct f2fs_inode *inode,
     84 		u32 nid,
     85 		enum FILE_TYPE ftype,
     86 		enum NODE_TYPE ntype,
     87 		u32 *blk_cnt);
     88 
     89 extern int fsck_chk_inode_blk(struct f2fs_sb_info *sbi,
     90 		u32 nid,
     91 		enum FILE_TYPE ftype,
     92 		struct f2fs_node *node_blk,
     93 		u32 *blk_cnt,
     94 		struct node_info *ni);
     95 
     96 extern int fsck_chk_dnode_blk(struct f2fs_sb_info *sbi,
     97 		struct f2fs_inode *inode,
     98 		u32 nid,
     99 		enum FILE_TYPE ftype,
    100 		struct f2fs_node *node_blk,
    101 		u32 *blk_cnt,
    102 		struct node_info *ni);
    103 
    104 extern int fsck_chk_idnode_blk(struct f2fs_sb_info *sbi,
    105 		struct f2fs_inode *inode,
    106 		enum FILE_TYPE ftype,
    107 		struct f2fs_node *node_blk,
    108 		u32 *blk_cnt);
    109 
    110 extern int fsck_chk_didnode_blk(struct f2fs_sb_info *sbi,
    111 		struct f2fs_inode *inode,
    112 		enum FILE_TYPE ftype,
    113 		struct f2fs_node *node_blk,
    114 		u32 *blk_cnt);
    115 
    116 extern int fsck_chk_data_blk(struct f2fs_sb_info *sbi,
    117 		u32 blk_addr,
    118 		u32 *child_cnt,
    119 		u32 *child_files,
    120 		int last_blk,
    121 		enum FILE_TYPE ftype,
    122 		u32 parent_nid,
    123 		u16 idx_in_node,
    124 		u8 ver);
    125 
    126 extern int fsck_chk_dentry_blk(struct f2fs_sb_info *sbi,
    127 		u32 blk_addr,
    128 		u32 *child_cnt,
    129 		u32 *child_files,
    130 		int last_blk);
    131 
    132 extern void print_node_info(struct f2fs_node *node_block);
    133 extern void print_inode_info(struct f2fs_inode *inode);
    134 extern struct seg_entry *get_seg_entry(struct f2fs_sb_info *sbi, unsigned int segno);
    135 extern int get_sum_block(struct f2fs_sb_info *sbi, unsigned int segno, struct f2fs_summary_block *sum_blk);
    136 extern int get_sum_entry(struct f2fs_sb_info *sbi, u32 blk_addr, struct f2fs_summary *sum_entry);
    137 extern int get_node_info(struct f2fs_sb_info *sbi, nid_t nid, struct node_info *ni);
    138 extern void build_nat_area_bitmap(struct f2fs_sb_info *sbi);
    139 extern int build_sit_area_bitmap(struct f2fs_sb_info *sbi);
    140 extern int fsck_init(struct f2fs_sb_info *sbi);
    141 extern int fsck_verify(struct f2fs_sb_info *sbi);
    142 extern void fsck_free(struct f2fs_sb_info *sbi);
    143 extern int f2fs_do_mount(struct f2fs_sb_info *sbi);
    144 extern void f2fs_do_umount(struct f2fs_sb_info *sbi);
    145 
    146 /* dump.c */
    147 struct dump_option {
    148 	nid_t nid;
    149 	int start_sit;
    150 	int end_sit;
    151 	int start_ssa;
    152 	int end_ssa;
    153 	int32_t blk_addr;
    154 };
    155 
    156 extern void sit_dump(struct f2fs_sb_info *sbi, int start_sit, int end_sit);
    157 extern void ssa_dump(struct f2fs_sb_info *sbi, int start_ssa, int end_ssa);
    158 extern int dump_node(struct f2fs_sb_info *sbi, nid_t nid);
    159 extern int dump_inode_from_blkaddr(struct f2fs_sb_info *sbi, u32 blk_addr);
    160 
    161 #endif /* _FSCK_H_ */
    162