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/*
* e2fsck.h
*
* Copyright (C) 1993, 1994 Theodore Ts'o. This file may be
* redistributed under the terms of the GNU Public License.
*
*/
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include <time.h>
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#ifdef HAVE_SETJMP_H
#include <setjmp.h>
#endif
#ifdef HAVE_LINUX_FS_H
#include <linux/fs.h>
#endif
#if EXT2_FLAT_INCLUDES
#include "ext2_fs.h"
#include "ext2fs.h"
#else
#include <linux/ext2_fs.h>
#include "ext2fs/ext2fs.h"
#endif
/* Everything is STDC, these days */
#define NOARGS void
/*
* Exit codes used by fsck-type programs
*/
#define FSCK_OK 0 /* No errors */
#define FSCK_NONDESTRUCT 1 /* File system errors corrected */
#define FSCK_REBOOT 2 /* System should be rebooted */
#define FSCK_UNCORRECTED 4 /* File system errors left uncorrected */
#define FSCK_ERROR 8 /* Operational error */
#define FSCK_USAGE 16 /* Usage or syntax error */
#define FSCK_LIBRARY 128 /* Shared library error */
/*
* The last ext2fs revision level that this version of e2fsck is able to
* support
*/
#define E2FSCK_CURRENT_REV 1
/*
* The directory information structure; stores directory information
* collected in earlier passes, to avoid disk i/o in fetching the
* directory information.
*/
struct dir_info {
ino_t ino; /* Inode number */
ino_t dotdot; /* Parent according to '..' */
ino_t parent; /* Parent according to treewalk */
};
#ifdef RESOURCE_TRACK
/*
* This structure is used for keeping track of how much resources have
* been used for a particular pass of e2fsck.
*/
struct resource_track {
struct timeval time_start;
struct timeval user_start;
struct timeval system_start;
void *brk_start;
};
#endif
/*
* E2fsck options
*/
#define E2F_OPT_READONLY 0x0001
#define E2F_OPT_PREEN 0x0002
#define E2F_OPT_YES 0x0004
#define E2F_OPT_NO 0x0008
#define E2F_OPT_TIME 0x0010
#define E2F_OPT_TIME2 0x0020
#define E2F_OPT_CHECKBLOCKS 0x0040
#define E2F_OPT_DEBUG 0x0080
/*
* E2fsck flags
*/
#define E2F_FLAG_ABORT 0x0001 /* Abort signaled */
#define E2F_FLAG_CANCEL 0x0002 /* Cancel signaled */
#define E2F_FLAG_RESTART 0x0004 /* Restart signaled */
#define E2F_FLAG_SIGNAL_MASK 0x000F
#define E2F_FLAG_SETJMP_OK 0x0010 /* Setjmp valid for abort */
/*
* Defines for indicating the e2fsck pass number
*/
#define E2F_PASS_1 1
#define E2F_PASS_2 2
#define E2F_PASS_3 3
#define E2F_PASS_4 4
#define E2F_PASS_5 5
#define E2F_PASS_1B 6
/*
* This is the global e2fsck structure.
*/
typedef struct e2fsck_struct *e2fsck_t;
struct e2fsck_struct {
ext2_filsys fs;
const char *program_name;
const char *filesystem_name;
const char *device_name;
int flags; /* E2fsck internal flags */
int options;
blk_t use_superblock; /* sb requested by user */
blk_t superblock; /* sb used to open fs */
blk_t num_blocks; /* Total number of blocks */
#ifdef HAVE_SETJMP_H
jmp_buf abort_loc;
#endif
unsigned long abort_code;
int (*progress)(e2fsck_t ctx, int pass, unsigned long cur,
unsigned long max);
ext2fs_inode_bitmap inode_used_map; /* Inodes which are in use */
ext2fs_inode_bitmap inode_bad_map; /* Inodes which are bad somehow */
ext2fs_inode_bitmap inode_dir_map; /* Inodes which are directories */
ext2fs_inode_bitmap inode_bb_map; /* Inodes which are in bad blocks */
ext2fs_block_bitmap block_found_map; /* Blocks which are in use */
ext2fs_block_bitmap block_dup_map; /* Blks referenced more than once */
ext2fs_block_bitmap block_illegal_map; /* Meta-data blocks */
/*
* Inode count arrays
*/
ext2_icount_t inode_count;
ext2_icount_t inode_link_info;
/*
* Array of flags indicating whether an inode bitmap, block
* bitmap, or inode table is invalid
*/
int *invalid_inode_bitmap_flag;
int *invalid_block_bitmap_flag;
int *invalid_inode_table_flag;
int invalid_bitmaps; /* There are invalid bitmaps/itable */
/*
* Block buffer
*/
char *block_buf;
/*
* For pass1_check_directory and pass1_get_blocks
*/
ino_t stashed_ino;
struct ext2_inode *stashed_inode;
/*
* Directory information
*/
int dir_info_count;
int dir_info_size;
struct dir_info *dir_info;
/*
* Tuning parameters
*/
int process_inode_size;
int inode_buffer_blocks;
#ifdef RESOURCE_TRACK
/*
* For timing purposes
*/
struct resource_track global_rtrack;
#endif
/* File counts */
int fs_directory_count;
int fs_regular_count;
int fs_blockdev_count;
int fs_chardev_count;
int fs_links_count;
int fs_symlinks_count;
int fs_fast_symlinks_count;
int fs_fifo_count;
int fs_total_count;
int fs_badblocks_count;
int fs_sockets_count;
int fs_ind_count;
int fs_dind_count;
int fs_tind_count;
int fs_fragmented;
/*
* For the use of callers of the e2fsck functions; not used by
* e2fsck functions themselves.
*/
void *priv_data;
};
/*
* Procedure declarations
*/
extern void e2fsck_pass1(e2fsck_t ctx);
extern void e2fsck_pass1_dupblocks(e2fsck_t ctx, char *block_buf);
extern void e2fsck_pass2(e2fsck_t ctx);
extern void e2fsck_pass3(e2fsck_t ctx);
extern void e2fsck_pass4(e2fsck_t ctx);
extern void e2fsck_pass5(e2fsck_t ctx);
/* e2fsck.c */
extern errcode_t e2fsck_allocate_context(e2fsck_t *ret);
extern errcode_t e2fsck_reset_context(e2fsck_t ctx);
extern void e2fsck_free_context(e2fsck_t ctx);
extern int e2fsck_run(e2fsck_t ctx);
/* pass1.c */
extern errcode_t pass1_check_directory(ext2_filsys fs, ino_t ino);
extern errcode_t pass1_get_blocks(ext2_filsys fs, ino_t ino, blk_t *blocks);
extern errcode_t pass1_read_inode(ext2_filsys fs, ino_t ino,
struct ext2_inode *inode);
extern errcode_t pass1_write_inode(ext2_filsys fs, ino_t ino,
struct ext2_inode *inode);
extern int e2fsck_pass1_check_device_inode(struct ext2_inode *inode);
/* badblock.c */
extern void read_bad_blocks_file(e2fsck_t ctx, const char *bad_blocks_file,
int replace_bad_blocks);
extern void test_disk(e2fsck_t ctx);
/* dirinfo.c */
extern void e2fsck_add_dir_info(e2fsck_t ctx, ino_t ino, ino_t parent);
extern struct dir_info *e2fsck_get_dir_info(e2fsck_t ctx, ino_t ino);
extern void e2fsck_free_dir_info(e2fsck_t ctx);
extern int e2fsck_get_num_dirs(e2fsck_t ctx);
extern int e2fsck_get_num_dirinfo(e2fsck_t ctx);
extern struct dir_info *e2fsck_dir_info_iter(e2fsck_t ctx, int *control);
/* ehandler.c */
extern const char *ehandler_operation(const char *op);
extern void ehandler_init(io_channel channel);
/* super.c */
void check_super_block(e2fsck_t ctx);
/* swapfs.c */
void swap_filesys(e2fsck_t ctx);
/* util.c */
extern void *e2fsck_allocate_memory(e2fsck_t ctx, unsigned int size,
const char *description);
extern int ask(e2fsck_t ctx, const char * string, int def);
extern int ask_yn(const char * string, int def);
extern void fatal_error(e2fsck_t ctx, const char * fmt_string);
extern void e2fsck_read_bitmaps(e2fsck_t ctx);
extern void e2fsck_write_bitmaps(e2fsck_t ctx);
extern void preenhalt(e2fsck_t ctx);
#ifdef RESOURCE_TRACK
extern void print_resource_track(const char *desc,
struct resource_track *track);
extern void init_resource_track(struct resource_track *track);
#endif
extern int inode_has_valid_blocks(struct ext2_inode *inode);
extern void e2fsck_read_inode(e2fsck_t ctx, unsigned long ino,
struct ext2_inode * inode, const char * proc);
extern void e2fsck_write_inode(e2fsck_t ctx, unsigned long ino,
struct ext2_inode * inode, const char * proc);
#ifdef MTRACE
extern void mtrace_print(char *mesg);
#endif
extern blk_t get_backup_sb(ext2_filsys fs);
/*
* pass3.c
*/
extern int e2fsck_reconnect_file(e2fsck_t ctx, ino_t inode);
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