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1 /*
2 * e2fsck.h
3 *
4 * Copyright (C) 1993, 1994 Theodore Ts'o. This file may be
5 * redistributed under the terms of the GNU Public License.
6 *
7 */
8
9 #ifndef _E2FSCK_H
10 #define _E2FSCK_H
11
12 #include <stdio.h>
13 #include <string.h>
14 #ifdef HAVE_UNISTD_H
15 #include <unistd.h>
16 #endif
17 #include <stdlib.h>
18 #include <time.h>
19 #ifdef HAVE_SYS_TYPES_H
20 #include <sys/types.h>
21 #endif
22 #ifdef HAVE_SYS_TIME_H
23 #include <sys/time.h>
24 #endif
25 #ifdef HAVE_SETJMP_H
26 #include <setjmp.h>
27 #endif
28
29 #if EXT2_FLAT_INCLUDES
30 #include "ext2_fs.h"
31 #include "ext2fs.h"
32 #include "blkid.h"
33 #else
34 #include "ext2fs/ext2_fs.h"
35 #include "ext2fs/ext2fs.h"
36 #include "blkid/blkid.h"
37 #endif
38
39 #include "profile.h"
40 #include "prof_err.h"
41
42 #ifdef ENABLE_NLS
43 #include <libintl.h>
44 #include <locale.h>
45 #define _(a) (gettext (a))
46 #ifdef gettext_noop
47 #define N_(a) gettext_noop (a)
48 #else
49 #define N_(a) (a)
50 #endif
51 #define P_(singular, plural, n) (ngettext (singular, plural, n))
52 #ifndef NLS_CAT_NAME
53 #define NLS_CAT_NAME "e2fsprogs"
54 #endif
55 #ifndef LOCALEDIR
56 #define LOCALEDIR "/usr/share/locale"
57 #endif
58 #else
59 #define _(a) (a)
60 #define N_(a) a
61 #define P_(singular, plural, n) ((n) == 1 ? (singular) : (plural))
62 #endif
63
64 #ifdef __GNUC__
65 #define E2FSCK_ATTR(x) __attribute__(x)
66 #else
67 #define E2FSCK_ATTR(x)
68 #endif
69
70 #include "quota/quotaio.h"
71
72 /*
73 * Exit codes used by fsck-type programs
74 */
75 #define FSCK_OK 0 /* No errors */
76 #define FSCK_NONDESTRUCT 1 /* File system errors corrected */
77 #define FSCK_REBOOT 2 /* System should be rebooted */
78 #define FSCK_UNCORRECTED 4 /* File system errors left uncorrected */
79 #define FSCK_ERROR 8 /* Operational error */
80 #define FSCK_USAGE 16 /* Usage or syntax error */
81 #define FSCK_CANCELED 32 /* Aborted with a signal or ^C */
82 #define FSCK_LIBRARY 128 /* Shared library error */
83
84 /*
85 * The last ext2fs revision level that this version of e2fsck is able to
86 * support
87 */
88 #define E2FSCK_CURRENT_REV 1
89
90 /*
91 * The directory information structure; stores directory information
92 * collected in earlier passes, to avoid disk i/o in fetching the
93 * directory information.
94 */
95 struct dir_info {
96 ext2_ino_t ino; /* Inode number */
97 ext2_ino_t dotdot; /* Parent according to '..' */
98 ext2_ino_t parent; /* Parent according to treewalk */
99 };
100
101
102 /*
103 * The indexed directory information structure; stores information for
104 * directories which contain a hash tree index.
105 */
106 struct dx_dir_info {
107 ext2_ino_t ino; /* Inode number */
108 int numblocks; /* number of blocks */
109 int hashversion;
110 short depth; /* depth of tree */
111 struct dx_dirblock_info *dx_block; /* Array of size numblocks */
112 };
113
114 #define DX_DIRBLOCK_ROOT 1
115 #define DX_DIRBLOCK_LEAF 2
116 #define DX_DIRBLOCK_NODE 3
117 #define DX_DIRBLOCK_CORRUPT 4
118 #define DX_DIRBLOCK_CLEARED 8
119
120 struct dx_dirblock_info {
121 int type;
122 blk64_t phys;
123 int flags;
124 blk64_t parent;
125 ext2_dirhash_t min_hash;
126 ext2_dirhash_t max_hash;
127 ext2_dirhash_t node_min_hash;
128 ext2_dirhash_t node_max_hash;
129 };
130
131 #define DX_FLAG_REFERENCED 1
132 #define DX_FLAG_DUP_REF 2
133 #define DX_FLAG_FIRST 4
134 #define DX_FLAG_LAST 8
135
136 #define RESOURCE_TRACK
137
138 #ifdef RESOURCE_TRACK
139 /*
140 * This structure is used for keeping track of how much resources have
141 * been used for a particular pass of e2fsck.
142 */
143 struct resource_track {
144 struct timeval time_start;
145 struct timeval user_start;
146 struct timeval system_start;
147 void *brk_start;
148 unsigned long long bytes_read;
149 unsigned long long bytes_written;
150 };
151 #endif
152
153 /*
154 * E2fsck options
155 */
156 #define E2F_OPT_READONLY 0x0001
157 #define E2F_OPT_PREEN 0x0002
158 #define E2F_OPT_YES 0x0004
159 #define E2F_OPT_NO 0x0008
160 #define E2F_OPT_TIME 0x0010
161 #define E2F_OPT_TIME2 0x0020
162 #define E2F_OPT_CHECKBLOCKS 0x0040
163 #define E2F_OPT_DEBUG 0x0080
164 #define E2F_OPT_FORCE 0x0100
165 #define E2F_OPT_WRITECHECK 0x0200
166 #define E2F_OPT_COMPRESS_DIRS 0x0400
167 #define E2F_OPT_FRAGCHECK 0x0800
168 #define E2F_OPT_JOURNAL_ONLY 0x1000 /* only replay the journal */
169 #define E2F_OPT_DISCARD 0x2000
170
171 /*
172 * E2fsck flags
173 */
174 #define E2F_FLAG_ABORT 0x0001 /* Abort signaled */
175 #define E2F_FLAG_CANCEL 0x0002 /* Cancel signaled */
176 #define E2F_FLAG_SIGNAL_MASK 0x0003
177 #define E2F_FLAG_RESTART 0x0004 /* Restart signaled */
178 #define E2F_FLAG_RESTART_LATER 0x0008 /* Restart after all iterations done */
179
180 #define E2F_FLAG_SETJMP_OK 0x0010 /* Setjmp valid for abort */
181
182 #define E2F_FLAG_PROG_BAR 0x0020 /* Progress bar on screen */
183 #define E2F_FLAG_PROG_SUPPRESS 0x0040 /* Progress suspended */
184 #define E2F_FLAG_JOURNAL_INODE 0x0080 /* Create a new ext3 journal inode */
185 #define E2F_FLAG_SB_SPECIFIED 0x0100 /* The superblock was explicitly
186 * specified by the user */
187 #define E2F_FLAG_RESTARTED 0x0200 /* E2fsck has been restarted */
188 #define E2F_FLAG_RESIZE_INODE 0x0400 /* Request to recreate resize inode */
189 #define E2F_FLAG_GOT_DEVSIZE 0x0800 /* Device size has been fetched */
190 #define E2F_FLAG_EXITING 0x1000 /* E2fsck exiting due to errors */
191 #define E2F_FLAG_TIME_INSANE 0x2000 /* Time is insane */
192 #define E2F_FLAG_PROBLEMS_FIXED 0x4000 /* At least one problem was fixed */
193
194 #define E2F_RESET_FLAGS (E2F_FLAG_TIME_INSANE | E2F_FLAG_PROBLEMS_FIXED)
195
196 /*
197 * Defines for indicating the e2fsck pass number
198 */
199 #define E2F_PASS_1 1
200 #define E2F_PASS_2 2
201 #define E2F_PASS_3 3
202 #define E2F_PASS_4 4
203 #define E2F_PASS_5 5
204 #define E2F_PASS_1B 6
205
206 /*
207 * Define the extended attribute refcount structure
208 */
209 typedef struct ea_refcount *ext2_refcount_t;
210
211 /*
212 * This is the global e2fsck structure.
213 */
214 typedef struct e2fsck_struct *e2fsck_t;
215
216 #define MAX_EXTENT_DEPTH_COUNT 5
217
218 struct e2fsck_struct {
219 ext2_filsys fs;
220 const char *program_name;
221 char *filesystem_name;
222 char *device_name;
223 char *io_options;
224 FILE *logf;
225 char *log_fn;
226 int flags; /* E2fsck internal flags */
227 int options;
228 int blocksize; /* blocksize */
229 blk64_t use_superblock; /* sb requested by user */
230 blk64_t superblock; /* sb used to open fs */
231 blk64_t num_blocks; /* Total number of blocks */
232 blk64_t free_blocks;
233 ino_t free_inodes;
234 int mount_flags;
235 blkid_cache blkid; /* blkid cache */
236
237 #ifdef HAVE_SETJMP_H
238 jmp_buf abort_loc;
239 #endif
240 unsigned long abort_code;
241
242 int (*progress)(e2fsck_t ctx, int pass, unsigned long cur,
243 unsigned long max);
244
245 ext2fs_inode_bitmap inode_used_map; /* Inodes which are in use */
246 ext2fs_inode_bitmap inode_bad_map; /* Inodes which are bad somehow */
247 ext2fs_inode_bitmap inode_dir_map; /* Inodes which are directories */
248 ext2fs_inode_bitmap inode_bb_map; /* Inodes which are in bad blocks */
249 ext2fs_inode_bitmap inode_imagic_map; /* AFS inodes */
250 ext2fs_inode_bitmap inode_reg_map; /* Inodes which are regular files*/
251
252 ext2fs_block_bitmap block_found_map; /* Blocks which are in use */
253 ext2fs_block_bitmap block_dup_map; /* Blks referenced more than once */
254 ext2fs_block_bitmap block_ea_map; /* Blocks which are used by EA's */
255
256 /*
257 * Inode count arrays
258 */
259 ext2_icount_t inode_count;
260 ext2_icount_t inode_link_info;
261
262 ext2_refcount_t refcount;
263 ext2_refcount_t refcount_extra;
264
265 /*
266 * Array of flags indicating whether an inode bitmap, block
267 * bitmap, or inode table is invalid
268 */
269 int *invalid_inode_bitmap_flag;
270 int *invalid_block_bitmap_flag;
271 int *invalid_inode_table_flag;
272 int invalid_bitmaps; /* There are invalid bitmaps/itable */
273
274 /*
275 * Block buffer
276 */
277 char *block_buf;
278
279 /*
280 * For pass1_check_directory and pass1_get_blocks
281 */
282 ext2_ino_t stashed_ino;
283 struct ext2_inode *stashed_inode;
284
285 /*
286 * Location of the lost and found directory
287 */
288 ext2_ino_t lost_and_found;
289 int bad_lost_and_found;
290
291 /*
292 * Directory information
293 */
294 struct dir_info_db *dir_info;
295
296 /*
297 * Indexed directory information
298 */
299 int dx_dir_info_count;
300 int dx_dir_info_size;
301 struct dx_dir_info *dx_dir_info;
302
303 /*
304 * Directories to hash
305 */
306 ext2_u32_list dirs_to_hash;
307
308 /*
309 * Tuning parameters
310 */
311 int process_inode_size;
312 int inode_buffer_blocks;
313 unsigned int htree_slack_percentage;
314
315 /*
316 * ext3 journal support
317 */
318 io_channel journal_io;
319 char *journal_name;
320
321 /*
322 * Ext4 quota support
323 */
324 quota_ctx_t qctx;
325 #ifdef RESOURCE_TRACK
326 /*
327 * For timing purposes
328 */
329 struct resource_track global_rtrack;
330 #endif
331
332 /*
333 * How we display the progress update (for unix)
334 */
335 int progress_fd;
336 int progress_pos;
337 int progress_last_percent;
338 unsigned int progress_last_time;
339 int interactive; /* Are we connected directly to a tty? */
340 char start_meta[2], stop_meta[2];
341
342 /* File counts */
343 __u32 fs_directory_count;
344 __u32 fs_regular_count;
345 __u32 fs_blockdev_count;
346 __u32 fs_chardev_count;
347 __u32 fs_links_count;
348 __u32 fs_symlinks_count;
349 __u32 fs_fast_symlinks_count;
350 __u32 fs_fifo_count;
351 __u32 fs_total_count;
352 __u32 fs_badblocks_count;
353 __u32 fs_sockets_count;
354 __u32 fs_ind_count;
355 __u32 fs_dind_count;
356 __u32 fs_tind_count;
357 __u32 fs_fragmented;
358 __u32 fs_fragmented_dir;
359 __u32 large_files;
360 __u32 fs_ext_attr_inodes;
361 __u32 fs_ext_attr_blocks;
362 __u32 extent_depth_count[MAX_EXTENT_DEPTH_COUNT];
363
364 /* misc fields */
365 time_t now;
366 time_t time_fudge; /* For working around buggy init scripts */
367 int ext_attr_ver;
368 profile_t profile;
369 int blocks_per_page;
370
371 /*
372 * For the use of callers of the e2fsck functions; not used by
373 * e2fsck functions themselves.
374 */
375 void *priv_data;
376 };
377
378 /* Used by the region allocation code */
379 typedef __u32 region_addr_t;
380 typedef struct region_struct *region_t;
381
382 #ifndef HAVE_STRNLEN
383 #define strnlen(str, x) e2fsck_strnlen((str),(x))
384 extern int e2fsck_strnlen(const char * s, int count);
385 #endif
386
387 /*
388 * Procedure declarations
389 */
390
391 extern void e2fsck_pass1(e2fsck_t ctx);
392 extern void e2fsck_pass1_dupblocks(e2fsck_t ctx, char *block_buf);
393 extern void e2fsck_pass2(e2fsck_t ctx);
394 extern void e2fsck_pass3(e2fsck_t ctx);
395 extern void e2fsck_pass4(e2fsck_t ctx);
396 extern void e2fsck_pass5(e2fsck_t ctx);
397
398 /* e2fsck.c */
399 extern errcode_t e2fsck_allocate_context(e2fsck_t *ret);
400 extern errcode_t e2fsck_reset_context(e2fsck_t ctx);
401 extern void e2fsck_free_context(e2fsck_t ctx);
402 extern int e2fsck_run(e2fsck_t ctx);
403
404
405 /* badblock.c */
406 extern void read_bad_blocks_file(e2fsck_t ctx, const char *bad_blocks_file,
407 int replace_bad_blocks);
408
409 /* dirinfo.c */
410 extern void e2fsck_add_dir_info(e2fsck_t ctx, ext2_ino_t ino, ext2_ino_t parent);
411 extern void e2fsck_free_dir_info(e2fsck_t ctx);
412 extern int e2fsck_get_num_dirinfo(e2fsck_t ctx);
413 extern struct dir_info_iter *e2fsck_dir_info_iter_begin(e2fsck_t ctx);
414 extern struct dir_info *e2fsck_dir_info_iter(e2fsck_t ctx,
415 struct dir_info_iter *);
416 extern void e2fsck_dir_info_iter_end(e2fsck_t ctx, struct dir_info_iter *);
417 extern int e2fsck_dir_info_set_parent(e2fsck_t ctx, ext2_ino_t ino,
418 ext2_ino_t parent);
419 extern int e2fsck_dir_info_set_dotdot(e2fsck_t ctx, ext2_ino_t ino,
420 ext2_ino_t dotdot);
421 extern int e2fsck_dir_info_get_parent(e2fsck_t ctx, ext2_ino_t ino,
422 ext2_ino_t *parent);
423 extern int e2fsck_dir_info_get_dotdot(e2fsck_t ctx, ext2_ino_t ino,
424 ext2_ino_t *dotdot);
425
426 /* dx_dirinfo.c */
427 extern void e2fsck_add_dx_dir(e2fsck_t ctx, ext2_ino_t ino, int num_blocks);
428 extern struct dx_dir_info *e2fsck_get_dx_dir_info(e2fsck_t ctx, ext2_ino_t ino);
429 extern void e2fsck_free_dx_dir_info(e2fsck_t ctx);
430 extern int e2fsck_get_num_dx_dirinfo(e2fsck_t ctx);
431 extern struct dx_dir_info *e2fsck_dx_dir_info_iter(e2fsck_t ctx, int *control);
432
433 /* ea_refcount.c */
434 extern errcode_t ea_refcount_create(int size, ext2_refcount_t *ret);
435 extern void ea_refcount_free(ext2_refcount_t refcount);
436 extern errcode_t ea_refcount_fetch(ext2_refcount_t refcount, blk64_t blk, int *ret);
437 extern errcode_t ea_refcount_increment(ext2_refcount_t refcount,
438 blk64_t blk, int *ret);
439 extern errcode_t ea_refcount_decrement(ext2_refcount_t refcount,
440 blk64_t blk, int *ret);
441 extern errcode_t ea_refcount_store(ext2_refcount_t refcount,
442 blk64_t blk, int count);
443 extern blk_t ext2fs_get_refcount_size(ext2_refcount_t refcount);
444 extern void ea_refcount_intr_begin(ext2_refcount_t refcount);
445 extern blk64_t ea_refcount_intr_next(ext2_refcount_t refcount, int *ret);
446
447 /* ehandler.c */
448 extern const char *ehandler_operation(const char *op);
449 extern void ehandler_init(io_channel channel);
450
451 /* journal.c */
452 extern errcode_t e2fsck_check_ext3_journal(e2fsck_t ctx);
453 extern errcode_t e2fsck_run_ext3_journal(e2fsck_t ctx);
454 extern void e2fsck_move_ext3_journal(e2fsck_t ctx);
455 extern int e2fsck_fix_ext3_journal_hint(e2fsck_t ctx);
456
457 /* logfile.c */
458 extern void set_up_logging(e2fsck_t ctx);
459
460 /* quota.c */
461 extern void e2fsck_hide_quota(e2fsck_t ctx);
462
463 /* pass1.c */
464 extern void e2fsck_setup_tdb_icount(e2fsck_t ctx, int flags,
465 ext2_icount_t *ret);
466 extern void e2fsck_use_inode_shortcuts(e2fsck_t ctx, int use_shortcuts);
467 extern int e2fsck_pass1_check_device_inode(ext2_filsys fs,
468 struct ext2_inode *inode);
469 extern int e2fsck_pass1_check_symlink(ext2_filsys fs, ext2_ino_t ino,
470 struct ext2_inode *inode, char *buf);
471 extern void e2fsck_clear_inode(e2fsck_t ctx, ext2_ino_t ino,
472 struct ext2_inode *inode, int restart_flag,
473 const char *source);
474
475 /* pass2.c */
476 extern int e2fsck_process_bad_inode(e2fsck_t ctx, ext2_ino_t dir,
477 ext2_ino_t ino, char *buf);
478
479 /* pass3.c */
480 extern int e2fsck_reconnect_file(e2fsck_t ctx, ext2_ino_t inode);
481 extern errcode_t e2fsck_expand_directory(e2fsck_t ctx, ext2_ino_t dir,
482 int num, int gauranteed_size);
483 extern ext2_ino_t e2fsck_get_lost_and_found(e2fsck_t ctx, int fix);
484 extern errcode_t e2fsck_adjust_inode_count(e2fsck_t ctx, ext2_ino_t ino,
485 int adj);
486
487
488 /* region.c */
489 extern region_t region_create(region_addr_t min, region_addr_t max);
490 extern void region_free(region_t region);
491 extern int region_allocate(region_t region, region_addr_t start, int n);
492
493 /* rehash.c */
494 void e2fsck_rehash_dir_later(e2fsck_t ctx, ext2_ino_t ino);
495 int e2fsck_dir_will_be_rehashed(e2fsck_t ctx, ext2_ino_t ino);
496 errcode_t e2fsck_rehash_dir(e2fsck_t ctx, ext2_ino_t ino);
497 void e2fsck_rehash_directories(e2fsck_t ctx);
498
499 /* sigcatcher.c */
500 void sigcatcher_setup(void);
501
502 /* super.c */
503 void check_super_block(e2fsck_t ctx);
504 int check_backup_super_block(e2fsck_t ctx);
505 void check_resize_inode(e2fsck_t ctx);
506
507 /* util.c */
508 extern void *e2fsck_allocate_memory(e2fsck_t ctx, unsigned int size,
509 const char *description);
510 extern int ask(e2fsck_t ctx, const char * string, int def);
511 extern int ask_yn(e2fsck_t ctx, const char * string, int def);
512 extern void fatal_error(e2fsck_t ctx, const char * fmt_string);
513 extern void log_out(e2fsck_t ctx, const char *fmt, ...)
514 E2FSCK_ATTR((format(printf, 2, 3)));
515 extern void log_err(e2fsck_t ctx, const char *fmt, ...)
516 E2FSCK_ATTR((format(printf, 2, 3)));
517 extern void e2fsck_read_bitmaps(e2fsck_t ctx);
518 extern void e2fsck_write_bitmaps(e2fsck_t ctx);
519 extern void preenhalt(e2fsck_t ctx);
520 extern char *string_copy(e2fsck_t ctx, const char *str, int len);
521 extern errcode_t e2fsck_zero_blocks(ext2_filsys fs, blk_t blk, int num,
522 blk_t *ret_blk, int *ret_count);
523 extern int fs_proc_check(const char *fs_name);
524 extern int check_for_modules(const char *fs_name);
525 #ifdef RESOURCE_TRACK
526 extern void print_resource_track(e2fsck_t ctx,
527 const char *desc,
528 struct resource_track *track,
529 io_channel channel);
530 extern void init_resource_track(struct resource_track *track,
531 io_channel channel);
532 #else
533 #define print_resource_track(ctx, desc, track, channel) do { } while (0)
534 #define init_resource_track(track, channel) do { } while (0)
535 #endif
536 extern int inode_has_valid_blocks(struct ext2_inode *inode);
537 extern void e2fsck_read_inode(e2fsck_t ctx, unsigned long ino,
538 struct ext2_inode * inode, const char * proc);
539 extern void e2fsck_read_inode_full(e2fsck_t ctx, unsigned long ino,
540 struct ext2_inode *inode,
541 const int bufsize, const char *proc);
542 extern void e2fsck_write_inode(e2fsck_t ctx, unsigned long ino,
543 struct ext2_inode * inode, const char * proc);
544 extern void e2fsck_write_inode_full(e2fsck_t ctx, unsigned long ino,
545 struct ext2_inode * inode, int bufsize,
546 const char *proc);
547 #ifdef MTRACE
548 extern void mtrace_print(char *mesg);
549 #endif
550 extern blk64_t get_backup_sb(e2fsck_t ctx, ext2_filsys fs,
551 const char *name, io_manager manager);
552 extern int ext2_file_type(unsigned int mode);
553 extern int write_all(int fd, char *buf, size_t count);
554 void dump_mmp_msg(struct mmp_struct *mmp, const char *msg);
555 errcode_t e2fsck_mmp_update(ext2_filsys fs);
556
557 extern void e2fsck_set_bitmap_type(ext2_filsys fs,
558 unsigned int default_type,
559 const char *profile_name,
560 unsigned int *old_type);
561 extern errcode_t e2fsck_allocate_inode_bitmap(ext2_filsys fs,
562 const char *descr,
563 int default_type,
564 const char *profile_name,
565 ext2fs_inode_bitmap *ret);
566 extern errcode_t e2fsck_allocate_block_bitmap(ext2_filsys fs,
567 const char *descr,
568 int default_type,
569 const char *profile_name,
570 ext2fs_block_bitmap *ret);
571 extern errcode_t e2fsck_allocate_subcluster_bitmap(ext2_filsys fs,
572 const char *descr,
573 int default_type,
574 const char *profile_name,
575 ext2fs_block_bitmap *ret);
576
577 /* unix.c */
578 extern void e2fsck_clear_progbar(e2fsck_t ctx);
579 extern int e2fsck_simple_progress(e2fsck_t ctx, const char *label,
580 float percent, unsigned int dpynum);
581 #endif /* _E2FSCK_H */