1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
|
/*
* 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>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#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_SIGNAL_MASK 0x0003
#define E2F_FLAG_RESTART 0x0004 /* Restart signaled */
#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
/*
* How we display the progress update (for unix)
*/
int progress_fd;
int progress_pos;
/* 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;
int large_files;
/*
* 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);
errcode_t e2fsck_get_device_size(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);
|
