]> git.ipfire.org Git - thirdparty/e2fsprogs.git/blob - e2fsck/unix.c
projects / thirdparty / e2fsprogs.git / blob
? search:
summary | shortlog | log | commit | commitdiff | tree
blame | history | raw | HEAD
Merge branch 'maint' into next
[thirdparty/e2fsprogs.git] / e2fsck / unix.c
1 /*
2 * unix.c - The unix-specific code for e2fsck
3 *
4 * Copyright (C) 1993, 1994, 1995, 1996, 1997 Theodore Ts'o.
5 *
6 * %Begin-Header%
7 * This file may be redistributed under the terms of the GNU Public
8 * License.
9 * %End-Header%
10 */
11
12 #define _XOPEN_SOURCE 600 /* for inclusion of sa_handler in Solaris */
13
14 #include "config.h"
15 #include <stdio.h>
16 #ifdef HAVE_STDLIB_H
17 #include <stdlib.h>
18 #endif
19 #include <string.h>
20 #include <fcntl.h>
21 #include <ctype.h>
22 #include <time.h>
23 #ifdef HAVE_SIGNAL_H
24 #include <signal.h>
25 #endif
26 #ifdef HAVE_GETOPT_H
27 #include <getopt.h>
28 #else
29 extern char *optarg;
30 extern int optind;
31 #endif
32 #include <unistd.h>
33 #ifdef HAVE_ERRNO_H
34 #include <errno.h>
35 #endif
36 #ifdef HAVE_SYS_IOCTL_H
37 #include <sys/ioctl.h>
38 #endif
39 #ifdef HAVE_MALLOC_H
40 #include <malloc.h>
41 #endif
42 #ifdef HAVE_SYS_TYPES_H
43 #include <sys/types.h>
44 #endif
45 #ifdef HAVE_DIRENT_H
46 #include <dirent.h>
47 #endif
48
49 #include "e2p/e2p.h"
50 #include "et/com_err.h"
51 #include "e2p/e2p.h"
52 #include "e2fsck.h"
53 #include "problem.h"
54 #include "../version.h"
55
56 /* Command line options */
57 static int cflag; /* check disk */
58 static int show_version_only;
59 static int verbose;
60
61 static int replace_bad_blocks;
62 static int keep_bad_blocks;
63 static char *bad_blocks_file;
64
65 e2fsck_t e2fsck_global_ctx; /* Try your very best not to use this! */
66
67 #ifdef CONFIG_JBD_DEBUG /* Enabled by configure --enable-jfs-debug */
68 int journal_enable_debug = -1;
69 #endif
70
71 static void usage(e2fsck_t ctx)
72 {
73 fprintf(stderr,
74 _("Usage: %s [-panyrcdfvtDFV] [-b superblock] [-B blocksize]\n"
75 "\t\t[-I inode_buffer_blocks] [-P process_inode_size]\n"
76 "\t\t[-l|-L bad_blocks_file] [-C fd] [-j external_journal]\n"
77 "\t\t[-E extended-options] device\n"),
78 ctx->program_name);
79
80 fprintf(stderr, "%s", _("\nEmergency help:\n"
81 " -p Automatic repair (no questions)\n"
82 " -n Make no changes to the filesystem\n"
83 " -y Assume \"yes\" to all questions\n"
84 " -c Check for bad blocks and add them to the badblock list\n"
85 " -f Force checking even if filesystem is marked clean\n"));
86 fprintf(stderr, "%s", _(""
87 " -v Be verbose\n"
88 " -b superblock Use alternative superblock\n"
89 " -B blocksize Force blocksize when looking for superblock\n"
90 " -j external_journal Set location of the external journal\n"
91 " -l bad_blocks_file Add to badblocks list\n"
92 " -L bad_blocks_file Set badblocks list\n"
93 ));
94
95 exit(FSCK_USAGE);
96 }
97
98 static void show_stats(e2fsck_t ctx)
99 {
100 ext2_filsys fs = ctx->fs;
101 ext2_ino_t inodes, inodes_used;
102 blk64_t blocks, blocks_used;
103 unsigned int dir_links;
104 unsigned int num_files, num_links;
105 __u32 *mask, m;
106 int frag_percent_file, frag_percent_dir, frag_percent_total;
107 int i, j, printed = 0;
108
109 dir_links = 2 * ctx->fs_directory_count - 1;
110 num_files = ctx->fs_total_count - dir_links;
111 num_links = ctx->fs_links_count - dir_links;
112 inodes = fs->super->s_inodes_count;
113 inodes_used = (fs->super->s_inodes_count -
114 fs->super->s_free_inodes_count);
115 blocks = ext2fs_blocks_count(fs->super);
116 blocks_used = (ext2fs_blocks_count(fs->super) -
117 ext2fs_free_blocks_count(fs->super));
118
119 frag_percent_file = (10000 * ctx->fs_fragmented) / inodes_used;
120 frag_percent_file = (frag_percent_file + 5) / 10;
121
122 frag_percent_dir = (10000 * ctx->fs_fragmented_dir) / inodes_used;
123 frag_percent_dir = (frag_percent_dir + 5) / 10;
124
125 frag_percent_total = ((10000 * (ctx->fs_fragmented +
126 ctx->fs_fragmented_dir))
127 / inodes_used);
128 frag_percent_total = (frag_percent_total + 5) / 10;
129
130 if (!verbose) {
131 log_out(ctx, _("%s: %u/%u files (%0d.%d%% non-contiguous), "
132 "%llu/%llu blocks\n"),
133 ctx->device_name, inodes_used, inodes,
134 frag_percent_total / 10, frag_percent_total % 10,
135 blocks_used, blocks);
136 return;
137 }
138 profile_get_boolean(ctx->profile, "options", "report_features", 0, 0,
139 &i);
140 if (verbose && i) {
141 log_out(ctx, "\nFilesystem features:");
142 mask = &ctx->fs->super->s_feature_compat;
143 for (i = 0; i < 3; i++, mask++) {
144 for (j = 0, m = 1; j < 32; j++, m <<= 1) {
145 if (*mask & m) {
146 log_out(ctx, " %s",
147 e2p_feature2string(i, m));
148 printed++;
149 }
150 }
151 }
152 if (printed == 0)
153 log_out(ctx, " (none)");
154 log_out(ctx, "\n");
155 }
156
157 log_out(ctx, P_("\n%12u inode used (%2.2f%%, out of %u)\n",
158 "\n%12u inodes used (%2.2f%%, out of %u)\n",
159 inodes_used), inodes_used,
160 100.0 * inodes_used / inodes, inodes);
161 log_out(ctx, P_("%12u non-contiguous file (%0d.%d%%)\n",
162 "%12u non-contiguous files (%0d.%d%%)\n",
163 ctx->fs_fragmented),
164 ctx->fs_fragmented, frag_percent_file / 10,
165 frag_percent_file % 10);
166 log_out(ctx, P_("%12u non-contiguous directory (%0d.%d%%)\n",
167 "%12u non-contiguous directories (%0d.%d%%)\n",
168 ctx->fs_fragmented_dir),
169 ctx->fs_fragmented_dir, frag_percent_dir / 10,
170 frag_percent_dir % 10);
171 log_out(ctx, _(" # of inodes with ind/dind/tind blocks: "
172 "%u/%u/%u\n"),
173 ctx->fs_ind_count, ctx->fs_dind_count, ctx->fs_tind_count);
174
175 for (j=MAX_EXTENT_DEPTH_COUNT-1; j >=0; j--)
176 if (ctx->extent_depth_count[j])
177 break;
178 if (++j) {
179 log_out(ctx, "%s", _(" Extent depth histogram: "));
180 for (i=0; i < j; i++) {
181 if (i)
182 fputc('/', stdout);
183 log_out(ctx, "%u", ctx->extent_depth_count[i]);
184 }
185 log_out(ctx, "\n");
186 }
187
188 log_out(ctx, P_("%12llu block used (%2.2f%%, out of %llu)\n",
189 "%12llu blocks used (%2.2f%%, out of %llu)\n",
190 blocks_used),
191 blocks_used, 100.0 * blocks_used / blocks, blocks);
192 log_out(ctx, P_("%12u bad block\n", "%12u bad blocks\n",
193 ctx->fs_badblocks_count), ctx->fs_badblocks_count);
194 log_out(ctx, P_("%12u large file\n", "%12u large files\n",
195 ctx->large_files), ctx->large_files);
196 log_out(ctx, P_("\n%12u regular file\n", "\n%12u regular files\n",
197 ctx->fs_regular_count), ctx->fs_regular_count);
198 log_out(ctx, P_("%12u directory\n", "%12u directories\n",
199 ctx->fs_directory_count), ctx->fs_directory_count);
200 log_out(ctx, P_("%12u character device file\n",
201 "%12u character device files\n", ctx->fs_chardev_count),
202 ctx->fs_chardev_count);
203 log_out(ctx, P_("%12u block device file\n", "%12u block device files\n",
204 ctx->fs_blockdev_count), ctx->fs_blockdev_count);
205 log_out(ctx, P_("%12u fifo\n", "%12u fifos\n", ctx->fs_fifo_count),
206 ctx->fs_fifo_count);
207 log_out(ctx, P_("%12u link\n", "%12u links\n", num_links),
208 ctx->fs_links_count - dir_links);
209 log_out(ctx, P_("%12u symbolic link", "%12u symbolic links",
210 ctx->fs_symlinks_count), ctx->fs_symlinks_count);
211 log_out(ctx, P_(" (%u fast symbolic link)\n",
212 " (%u fast symbolic links)\n",
213 ctx->fs_fast_symlinks_count),
214 ctx->fs_fast_symlinks_count);
215 log_out(ctx, P_("%12u socket\n", "%12u sockets\n",
216 ctx->fs_sockets_count),
217 ctx->fs_sockets_count);
218 log_out(ctx, "------------\n");
219 log_out(ctx, P_("%12u file\n", "%12u files\n", num_files),
220 num_files);
221 }
222
223 static void check_mount(e2fsck_t ctx)
224 {
225 errcode_t retval;
226 int cont;
227
228 retval = ext2fs_check_if_mounted(ctx->filesystem_name,
229 &ctx->mount_flags);
230 if (retval) {
231 com_err("ext2fs_check_if_mount", retval,
232 _("while determining whether %s is mounted."),
233 ctx->filesystem_name);
234 return;
235 }
236
237 /*
238 * If the filesystem isn't mounted, or it's the root
239 * filesystem and it's mounted read-only, and we're not doing
240 * a read/write check, then everything's fine.
241 */
242 if ((!(ctx->mount_flags & (EXT2_MF_MOUNTED | EXT2_MF_BUSY))) ||
243 ((ctx->mount_flags & EXT2_MF_ISROOT) &&
244 (ctx->mount_flags & EXT2_MF_READONLY) &&
245 !(ctx->options & E2F_OPT_WRITECHECK)))
246 return;
247
248 if (((ctx->options & E2F_OPT_READONLY) ||
249 ((ctx->options & E2F_OPT_FORCE) &&
250 (ctx->mount_flags & EXT2_MF_READONLY))) &&
251 !(ctx->options & E2F_OPT_WRITECHECK)) {
252 if (ctx->mount_flags & EXT2_MF_MOUNTED)
253 log_out(ctx, _("Warning! %s is mounted.\n"),
254 ctx->filesystem_name);
255 else
256 log_out(ctx, _("Warning! %s is in use.\n"),
257 ctx->filesystem_name);
258 return;
259 }
260
261 if (ctx->mount_flags & EXT2_MF_MOUNTED)
262 log_out(ctx, _("%s is mounted.\n"), ctx->filesystem_name);
263 else
264 log_out(ctx, _("%s is in use.\n"), ctx->filesystem_name);
265 if (!ctx->interactive || ctx->mount_flags & EXT2_MF_BUSY)
266 fatal_error(ctx, _("Cannot continue, aborting.\n\n"));
267 puts("\007\007\007\007");
268 log_out(ctx, "%s", _("\n\nWARNING!!! "
269 "The filesystem is mounted. "
270 "If you continue you ***WILL***\n"
271 "cause ***SEVERE*** filesystem damage.\n\n"));
272 puts("\007\007\007");
273 cont = ask_yn(ctx, _("Do you really want to continue"), 0);
274 if (!cont) {
275 printf("%s", _("check aborted.\n"));
276 exit (0);
277 }
278 return;
279 }
280
281 static int is_on_batt(void)
282 {
283 FILE *f;
284 DIR *d;
285 char tmp[80], tmp2[80], fname[80];
286 unsigned int acflag;
287 struct dirent* de;
288
289 f = fopen("/sys/class/power_supply/AC/online", "r");
290 if (f) {
291 if (fscanf(f, "%u\n", &acflag) == 1) {
292 fclose(f);
293 return (!acflag);
294 }
295 fclose(f);
296 }
297 f = fopen("/proc/apm", "r");
298 if (f) {
299 if (fscanf(f, "%s %s %s %x", tmp, tmp, tmp, &acflag) != 4)
300 acflag = 1;
301 fclose(f);
302 return (acflag != 1);
303 }
304 d = opendir("/proc/acpi/ac_adapter");
305 if (d) {
306 while ((de=readdir(d)) != NULL) {
307 if (!strncmp(".", de->d_name, 1))
308 continue;
309 snprintf(fname, 80, "/proc/acpi/ac_adapter/%s/state",
310 de->d_name);
311 f = fopen(fname, "r");
312 if (!f)
313 continue;
314 if (fscanf(f, "%s %s", tmp2, tmp) != 2)
315 tmp[0] = 0;
316 fclose(f);
317 if (strncmp(tmp, "off-line", 8) == 0) {
318 closedir(d);
319 return 1;
320 }
321 }
322 closedir(d);
323 }
324 return 0;
325 }
326
327 /*
328 * This routine checks to see if a filesystem can be skipped; if so,
329 * it will exit with E2FSCK_OK. Under some conditions it will print a
330 * message explaining why a check is being forced.
331 */
332 static void check_if_skip(e2fsck_t ctx)
333 {
334 ext2_filsys fs = ctx->fs;
335 struct problem_context pctx;
336 const char *reason = NULL;
337 unsigned int reason_arg = 0;
338 long next_check;
339 int batt = is_on_batt();
340 int defer_check_on_battery;
341 int broken_system_clock;
342 time_t lastcheck;
343
344 if (ctx->flags & E2F_FLAG_PROBLEMS_FIXED)
345 return;
346
347 profile_get_boolean(ctx->profile, "options", "broken_system_clock",
348 0, 0, &broken_system_clock);
349 if (ctx->flags & E2F_FLAG_TIME_INSANE)
350 broken_system_clock = 1;
351 profile_get_boolean(ctx->profile, "options",
352 "defer_check_on_battery", 0, 1,
353 &defer_check_on_battery);
354 if (!defer_check_on_battery)
355 batt = 0;
356
357 if ((ctx->options & E2F_OPT_FORCE) || bad_blocks_file || cflag)
358 return;
359
360 if (ctx->options & E2F_OPT_JOURNAL_ONLY)
361 goto skip;
362
363 lastcheck = fs->super->s_lastcheck;
364 if (lastcheck > ctx->now)
365 lastcheck -= ctx->time_fudge;
366 if ((fs->super->s_state & EXT2_ERROR_FS) ||
367 !ext2fs_test_valid(fs))
368 reason = _(" contains a file system with errors");
369 else if ((fs->super->s_state & EXT2_VALID_FS) == 0)
370 reason = _(" was not cleanly unmounted");
371 else if (check_backup_super_block(ctx))
372 reason = _(" primary superblock features different from backup");
373 else if ((fs->super->s_max_mnt_count > 0) &&
374 (fs->super->s_mnt_count >=
375 (unsigned) fs->super->s_max_mnt_count)) {
376 reason = _(" has been mounted %u times without being checked");
377 reason_arg = fs->super->s_mnt_count;
378 if (batt && (fs->super->s_mnt_count <
379 (unsigned) fs->super->s_max_mnt_count*2))
380 reason = 0;
381 } else if (!broken_system_clock && fs->super->s_checkinterval &&
382 (ctx->now < lastcheck)) {
383 reason = _(" has filesystem last checked time in the future");
384 if (batt)
385 reason = 0;
386 } else if (!broken_system_clock && fs->super->s_checkinterval &&
387 ((ctx->now - lastcheck) >=
388 ((time_t) fs->super->s_checkinterval))) {
389 reason = _(" has gone %u days without being checked");
390 reason_arg = (ctx->now - fs->super->s_lastcheck)/(3600*24);
391 if (batt && ((ctx->now - fs->super->s_lastcheck) <
392 fs->super->s_checkinterval*2))
393 reason = 0;
394 }
395 if (reason) {
396 log_out(ctx, "%s", ctx->device_name);
397 log_out(ctx, reason, reason_arg);
398 log_out(ctx, "%s", _(", check forced.\n"));
399 return;
400 }
401
402 /*
403 * Update the global counts from the block group counts. This
404 * is needed since modern kernels don't update the global
405 * counts so as to avoid locking the entire file system. So
406 * if the filesystem is not unmounted cleanly, the global
407 * counts may not be accurate. Update them here if we can,
408 * for the benefit of users who might examine the file system
409 * using dumpe2fs. (This is for cosmetic reasons only.)
410 */
411 clear_problem_context(&pctx);
412 pctx.ino = fs->super->s_free_inodes_count;
413 pctx.ino2 = ctx->free_inodes;
414 if ((pctx.ino != pctx.ino2) &&
415 !(ctx->options & E2F_OPT_READONLY) &&
416 fix_problem(ctx, PR_0_FREE_INODE_COUNT, &pctx)) {
417 fs->super->s_free_inodes_count = ctx->free_inodes;
418 ext2fs_mark_super_dirty(fs);
419 }
420 clear_problem_context(&pctx);
421 pctx.blk = ext2fs_free_blocks_count(fs->super);
422 pctx.blk2 = ctx->free_blocks;
423 if ((pctx.blk != pctx.blk2) &&
424 !(ctx->options & E2F_OPT_READONLY) &&
425 fix_problem(ctx, PR_0_FREE_BLOCK_COUNT, &pctx)) {
426 ext2fs_free_blocks_count_set(fs->super, ctx->free_blocks);
427 ext2fs_mark_super_dirty(fs);
428 }
429
430 /* Print the summary message when we're skipping a full check */
431 log_out(ctx, _("%s: clean, %u/%u files, %llu/%llu blocks"),
432 ctx->device_name,
433 fs->super->s_inodes_count - fs->super->s_free_inodes_count,
434 fs->super->s_inodes_count,
435 ext2fs_blocks_count(fs->super) -
436 ext2fs_free_blocks_count(fs->super),
437 ext2fs_blocks_count(fs->super));
438 next_check = 100000;
439 if (fs->super->s_max_mnt_count > 0) {
440 next_check = fs->super->s_max_mnt_count - fs->super->s_mnt_count;
441 if (next_check <= 0)
442 next_check = 1;
443 }
444 if (!broken_system_clock && fs->super->s_checkinterval &&
445 ((ctx->now - fs->super->s_lastcheck) >= fs->super->s_checkinterval))
446 next_check = 1;
447 if (next_check <= 5) {
448 if (next_check == 1) {
449 if (batt)
450 log_out(ctx, "%s",
451 _(" (check deferred; on battery)"));
452 else
453 log_out(ctx, "%s",
454 _(" (check after next mount)"));
455 } else
456 log_out(ctx, _(" (check in %ld mounts)"),
457 next_check);
458 }
459 log_out(ctx, "\n");
460 skip:
461 ext2fs_close(fs);
462 ctx->fs = NULL;
463 e2fsck_free_context(ctx);
464 exit(FSCK_OK);
465 }
466
467 /*
468 * For completion notice
469 */
470 struct percent_tbl {
471 int max_pass;
472 int table[32];
473 };
474 static struct percent_tbl e2fsck_tbl = {
475 5, { 0, 70, 90, 92, 95, 100 }
476 };
477 static char bar[128], spaces[128];
478
479 static float calc_percent(struct percent_tbl *tbl, int pass, int curr,
480 int max)
481 {
482 float percent;
483
484 if (pass <= 0)
485 return 0.0;
486 if (pass > tbl->max_pass || max == 0)
487 return 100.0;
488 percent = ((float) curr) / ((float) max);
489 return ((percent * (tbl->table[pass] - tbl->table[pass-1]))
490 + tbl->table[pass-1]);
491 }
492
493 void e2fsck_clear_progbar(e2fsck_t ctx)
494 {
495 if (!(ctx->flags & E2F_FLAG_PROG_BAR))
496 return;
497
498 printf("%s%s\r%s", ctx->start_meta, spaces + (sizeof(spaces) - 80),
499 ctx->stop_meta);
500 fflush(stdout);
501 ctx->flags &= ~E2F_FLAG_PROG_BAR;
502 }
503
504 int e2fsck_simple_progress(e2fsck_t ctx, const char *label, float percent,
505 unsigned int dpynum)
506 {
507 static const char spinner[] = "\\|/-";
508 int i;
509 unsigned int tick;
510 struct timeval tv;
511 int dpywidth;
512 int fixed_percent;
513
514 if (ctx->flags & E2F_FLAG_PROG_SUPPRESS)
515 return 0;
516
517 /*
518 * Calculate the new progress position. If the
519 * percentage hasn't changed, then we skip out right
520 * away.
521 */
522 fixed_percent = (int) ((10 * percent) + 0.5);
523 if (ctx->progress_last_percent == fixed_percent)
524 return 0;
525 ctx->progress_last_percent = fixed_percent;
526
527 /*
528 * If we've already updated the spinner once within
529 * the last 1/8th of a second, no point doing it
530 * again.
531 */
532 gettimeofday(&tv, NULL);
533 tick = (tv.tv_sec << 3) + (tv.tv_usec / (1000000 / 8));
534 if ((tick == ctx->progress_last_time) &&
535 (fixed_percent != 0) && (fixed_percent != 1000))
536 return 0;
537 ctx->progress_last_time = tick;
538
539 /*
540 * Advance the spinner, and note that the progress bar
541 * will be on the screen
542 */
543 ctx->progress_pos = (ctx->progress_pos+1) & 3;
544 ctx->flags |= E2F_FLAG_PROG_BAR;
545
546 dpywidth = 66 - strlen(label);
547 dpywidth = 8 * (dpywidth / 8);
548 if (dpynum)
549 dpywidth -= 8;
550
551 i = ((percent * dpywidth) + 50) / 100;
552 printf("%s%s: |%s%s", ctx->start_meta, label,
553 bar + (sizeof(bar) - (i+1)),
554 spaces + (sizeof(spaces) - (dpywidth - i + 1)));
555 if (fixed_percent == 1000)
556 fputc('|', stdout);
557 else
558 fputc(spinner[ctx->progress_pos & 3], stdout);
559 printf(" %4.1f%% ", percent);
560 if (dpynum)
561 printf("%u\r", dpynum);
562 else
563 fputs(" \r", stdout);
564 fputs(ctx->stop_meta, stdout);
565
566 if (fixed_percent == 1000)
567 e2fsck_clear_progbar(ctx);
568 fflush(stdout);
569
570 return 0;
571 }
572
573 static int e2fsck_update_progress(e2fsck_t ctx, int pass,
574 unsigned long cur, unsigned long max)
575 {
576 char buf[1024];
577 float percent;
578
579 if (pass == 0)
580 return 0;
581
582 if (ctx->progress_fd) {
583 snprintf(buf, sizeof(buf), "%d %lu %lu %s\n",
584 pass, cur, max, ctx->device_name);
585 write_all(ctx->progress_fd, buf, strlen(buf));
586 } else {
587 percent = calc_percent(&e2fsck_tbl, pass, cur, max);
588 e2fsck_simple_progress(ctx, ctx->device_name,
589 percent, 0);
590 }
591 return 0;
592 }
593
594 #define PATH_SET "PATH=/sbin"
595
596 /*
597 * Make sure 0,1,2 file descriptors are open, so that we don't open
598 * the filesystem using the same file descriptor as stdout or stderr.
599 */
600 static void reserve_stdio_fds(void)
601 {
602 int fd = 0;
603
604 while (fd <= 2) {
605 fd = open("/dev/null", O_RDWR);
606 if (fd < 0) {
607 fprintf(stderr, _("ERROR: Couldn't open "
608 "/dev/null (%s)\n"),
609 strerror(errno));
610 break;
611 }
612 }
613 }
614
615 #ifdef HAVE_SIGNAL_H
616 static void signal_progress_on(int sig EXT2FS_ATTR((unused)))
617 {
618 e2fsck_t ctx = e2fsck_global_ctx;
619
620 if (!ctx)
621 return;
622
623 ctx->progress = e2fsck_update_progress;
624 }
625
626 static void signal_progress_off(int sig EXT2FS_ATTR((unused)))
627 {
628 e2fsck_t ctx = e2fsck_global_ctx;
629
630 if (!ctx)
631 return;
632
633 e2fsck_clear_progbar(ctx);
634 ctx->progress = 0;
635 }
636
637 static void signal_cancel(int sig EXT2FS_ATTR((unused)))
638 {
639 e2fsck_t ctx = e2fsck_global_ctx;
640
641 if (!ctx)
642 exit(FSCK_CANCELED);
643
644 ctx->flags |= E2F_FLAG_CANCEL;
645 }
646 #endif
647
648 static void parse_extended_opts(e2fsck_t ctx, const char *opts)
649 {
650 char *buf, *token, *next, *p, *arg;
651 int ea_ver;
652 int extended_usage = 0;
653
654 buf = string_copy(ctx, opts, 0);
655 for (token = buf; token && *token; token = next) {
656 p = strchr(token, ',');
657 next = 0;
658 if (p) {
659 *p = 0;
660 next = p+1;
661 }
662 arg = strchr(token, '=');
663 if (arg) {
664 *arg = 0;
665 arg++;
666 }
667 if (strcmp(token, "ea_ver") == 0) {
668 if (!arg) {
669 extended_usage++;
670 continue;
671 }
672 ea_ver = strtoul(arg, &p, 0);
673 if (*p ||
674 ((ea_ver != 1) && (ea_ver != 2))) {
675 fprintf(stderr, "%s",
676 _("Invalid EA version.\n"));
677 extended_usage++;
678 continue;
679 }
680 ctx->ext_attr_ver = ea_ver;
681 } else if (strcmp(token, "fragcheck") == 0) {
682 ctx->options |= E2F_OPT_FRAGCHECK;
683 continue;
684 } else if (strcmp(token, "journal_only") == 0) {
685 if (arg) {
686 extended_usage++;
687 continue;
688 }
689 ctx->options |= E2F_OPT_JOURNAL_ONLY;
690 } else if (strcmp(token, "discard") == 0) {
691 ctx->options |= E2F_OPT_DISCARD;
692 continue;
693 } else if (strcmp(token, "nodiscard") == 0) {
694 ctx->options &= ~E2F_OPT_DISCARD;
695 continue;
696 } else if (strcmp(token, "log_filename") == 0) {
697 if (!arg)
698 extended_usage++;
699 else
700 ctx->log_fn = string_copy(ctx, arg, 0);
701 continue;
702 } else {
703 fprintf(stderr, _("Unknown extended option: %s\n"),
704 token);
705 extended_usage++;
706 }
707 }
708 free(buf);
709
710 if (extended_usage) {
711 fputs(("\nExtended options are separated by commas, "
712 "and may take an argument which\n"
713 "is set off by an equals ('=') sign. "
714 "Valid extended options are:\n"), stderr);
715 fputs(("\tea_ver=<ea_version (1 or 2)>\n"), stderr);
716 fputs(("\tfragcheck\n"), stderr);
717 fputs(("\tjournal_only\n"), stderr);
718 fputs(("\tdiscard\n"), stderr);
719 fputs(("\tnodiscard\n"), stderr);
720 fputc('\n', stderr);
721 exit(1);
722 }
723 }
724
725 static void syntax_err_report(const char *filename, long err, int line_num)
726 {
727 fprintf(stderr,
728 _("Syntax error in e2fsck config file (%s, line #%d)\n\t%s\n"),
729 filename, line_num, error_message(err));
730 exit(FSCK_ERROR);
731 }
732
733 static const char *config_fn[] = { ROOT_SYSCONFDIR "/e2fsck.conf", 0 };
734
735 static errcode_t PRS(int argc, char *argv[], e2fsck_t *ret_ctx)
736 {
737 int flush = 0;
738 int c, fd;
739 #ifdef MTRACE
740 extern void *mallwatch;
741 #endif
742 e2fsck_t ctx;
743 errcode_t retval;
744 #ifdef HAVE_SIGNAL_H
745 struct sigaction sa;
746 #endif
747 char *extended_opts = 0;
748 char *cp;
749 int res; /* result of sscanf */
750 #ifdef CONFIG_JBD_DEBUG
751 char *jbd_debug;
752 #endif
753
754 retval = e2fsck_allocate_context(&ctx);
755 if (retval)
756 return retval;
757
758 *ret_ctx = ctx;
759 e2fsck_global_ctx = ctx;
760
761 setvbuf(stdout, NULL, _IONBF, BUFSIZ);
762 setvbuf(stderr, NULL, _IONBF, BUFSIZ);
763 if (isatty(0) && isatty(1)) {
764 ctx->interactive = 1;
765 } else {
766 ctx->start_meta[0] = '\001';
767 ctx->stop_meta[0] = '\002';
768 }
769 memset(bar, '=', sizeof(bar)-1);
770 memset(spaces, ' ', sizeof(spaces)-1);
771 add_error_table(&et_ext2_error_table);
772 add_error_table(&et_prof_error_table);
773 blkid_get_cache(&ctx->blkid, NULL);
774
775 if (argc && *argv)
776 ctx->program_name = *argv;
777 else
778 ctx->program_name = "e2fsck";
779
780 while ((c = getopt (argc, argv, "panyrcC:B:dE:fvtFVM:b:I:j:P:l:L:N:SsDk")) != EOF)
781 switch (c) {
782 case 'C':
783 ctx->progress = e2fsck_update_progress;
784 res = sscanf(optarg, "%d", &ctx->progress_fd);
785 if (res != 1)
786 goto sscanf_err;
787
788 if (ctx->progress_fd < 0) {
789 ctx->progress = 0;
790 ctx->progress_fd = ctx->progress_fd * -1;
791 }
792 if (!ctx->progress_fd)
793 break;
794 /* Validate the file descriptor to avoid disasters */
795 fd = dup(ctx->progress_fd);
796 if (fd < 0) {
797 fprintf(stderr,
798 _("Error validating file descriptor %d: %s\n"),
799 ctx->progress_fd,
800 error_message(errno));
801 fatal_error(ctx,
802 _("Invalid completion information file descriptor"));
803 } else
804 close(fd);
805 break;
806 case 'D':
807 ctx->options |= E2F_OPT_COMPRESS_DIRS;
808 break;
809 case 'E':
810 extended_opts = optarg;
811 break;
812 case 'p':
813 case 'a':
814 if (ctx->options & (E2F_OPT_YES|E2F_OPT_NO)) {
815 conflict_opt:
816 fatal_error(ctx,
817 _("Only one of the options -p/-a, -n or -y may be specified."));
818 }
819 ctx->options |= E2F_OPT_PREEN;
820 break;
821 case 'n':
822 if (ctx->options & (E2F_OPT_YES|E2F_OPT_PREEN))
823 goto conflict_opt;
824 ctx->options |= E2F_OPT_NO;
825 break;
826 case 'y':
827 if (ctx->options & (E2F_OPT_PREEN|E2F_OPT_NO))
828 goto conflict_opt;
829 ctx->options |= E2F_OPT_YES;
830 break;
831 case 't':
832 #ifdef RESOURCE_TRACK
833 if (ctx->options & E2F_OPT_TIME)
834 ctx->options |= E2F_OPT_TIME2;
835 else
836 ctx->options |= E2F_OPT_TIME;
837 #else
838 fprintf(stderr, _("The -t option is not "
839 "supported on this version of e2fsck.\n"));
840 #endif
841 break;
842 case 'c':
843 if (cflag++)
844 ctx->options |= E2F_OPT_WRITECHECK;
845 ctx->options |= E2F_OPT_CHECKBLOCKS;
846 break;
847 case 'r':
848 /* What we do by default, anyway! */
849 break;
850 case 'b':
851 res = sscanf(optarg, "%llu", &ctx->use_superblock);
852 if (res != 1)
853 goto sscanf_err;
854 ctx->flags |= E2F_FLAG_SB_SPECIFIED;
855 break;
856 case 'B':
857 ctx->blocksize = atoi(optarg);
858 break;
859 case 'I':
860 res = sscanf(optarg, "%d", &ctx->inode_buffer_blocks);
861 if (res != 1)
862 goto sscanf_err;
863 break;
864 case 'j':
865 ctx->journal_name = blkid_get_devname(ctx->blkid,
866 optarg, NULL);
867 if (!ctx->journal_name) {
868 com_err(ctx->program_name, 0,
869 _("Unable to resolve '%s'"),
870 optarg);
871 fatal_error(ctx, 0);
872 }
873 break;
874 case 'P':
875 res = sscanf(optarg, "%d", &ctx->process_inode_size);
876 if (res != 1)
877 goto sscanf_err;
878 break;
879 case 'L':
880 replace_bad_blocks++;
881 case 'l':
882 if (bad_blocks_file)
883 free(bad_blocks_file);
884 bad_blocks_file = string_copy(ctx, optarg, 0);
885 break;
886 case 'd':
887 ctx->options |= E2F_OPT_DEBUG;
888 break;
889 case 'f':
890 ctx->options |= E2F_OPT_FORCE;
891 break;
892 case 'F':
893 flush = 1;
894 break;
895 case 'v':
896 verbose = 1;
897 break;
898 case 'V':
899 show_version_only = 1;
900 break;
901 #ifdef MTRACE
902 case 'M':
903 mallwatch = (void *) strtol(optarg, NULL, 0);
904 break;
905 #endif
906 case 'N':
907 ctx->device_name = string_copy(ctx, optarg, 0);
908 break;
909 case 'k':
910 keep_bad_blocks++;
911 break;
912 default:
913 usage(ctx);
914 }
915 if (show_version_only)
916 return 0;
917 if (optind != argc - 1)
918 usage(ctx);
919 if ((ctx->options & E2F_OPT_NO) &&
920 (ctx->options & E2F_OPT_COMPRESS_DIRS)) {
921 com_err(ctx->program_name, 0, "%s",
922 _("The -n and -D options are incompatible."));
923 fatal_error(ctx, 0);
924 }
925 if ((ctx->options & E2F_OPT_NO) && cflag) {
926 com_err(ctx->program_name, 0, "%s",
927 _("The -n and -c options are incompatible."));
928 fatal_error(ctx, 0);
929 }
930 if ((ctx->options & E2F_OPT_NO) && bad_blocks_file) {
931 com_err(ctx->program_name, 0, "%s",
932 _("The -n and -l/-L options are incompatible."));
933 fatal_error(ctx, 0);
934 }
935 if (ctx->options & E2F_OPT_NO)
936 ctx->options |= E2F_OPT_READONLY;
937
938 ctx->io_options = strchr(argv[optind], '?');
939 if (ctx->io_options)
940 *ctx->io_options++ = 0;
941 ctx->filesystem_name = blkid_get_devname(ctx->blkid, argv[optind], 0);
942 if (!ctx->filesystem_name) {
943 com_err(ctx->program_name, 0, _("Unable to resolve '%s'"),
944 argv[optind]);
945 fatal_error(ctx, 0);
946 }
947 if (extended_opts)
948 parse_extended_opts(ctx, extended_opts);
949
950 if ((cp = getenv("E2FSCK_CONFIG")) != NULL)
951 config_fn[0] = cp;
952 profile_set_syntax_err_cb(syntax_err_report);
953 profile_init(config_fn, &ctx->profile);
954
955 profile_get_boolean(ctx->profile, "options", "report_time", 0, 0,
956 &c);
957 if (c)
958 ctx->options |= E2F_OPT_TIME | E2F_OPT_TIME2;
959 profile_get_boolean(ctx->profile, "options", "report_verbose", 0, 0,
960 &c);
961 if (c)
962 verbose = 1;
963
964 /* Turn off discard in read-only mode */
965 if ((ctx->options & E2F_OPT_NO) &&
966 (ctx->options & E2F_OPT_DISCARD))
967 ctx->options &= ~E2F_OPT_DISCARD;
968
969 if (flush) {
970 fd = open(ctx->filesystem_name, O_RDONLY, 0);
971 if (fd < 0) {
972 com_err("open", errno,
973 _("while opening %s for flushing"),
974 ctx->filesystem_name);
975 fatal_error(ctx, 0);
976 }
977 if ((retval = ext2fs_sync_device(fd, 1))) {
978 com_err("ext2fs_sync_device", retval,
979 _("while trying to flush %s"),
980 ctx->filesystem_name);
981 fatal_error(ctx, 0);
982 }
983 close(fd);
984 }
985 if (cflag && bad_blocks_file) {
986 fprintf(stderr, "%s", _("The -c and the -l/-L options may not "
987 "be both used at the same time.\n"));
988 exit(FSCK_USAGE);
989 }
990 #ifdef HAVE_SIGNAL_H
991 /*
992 * Set up signal action
993 */
994 memset(&sa, 0, sizeof(struct sigaction));
995 sa.sa_handler = signal_cancel;
996 sigaction(SIGINT, &sa, 0);
997 sigaction(SIGTERM, &sa, 0);
998 #ifdef SA_RESTART
999 sa.sa_flags = SA_RESTART;
1000 #endif
1001 sa.sa_handler = signal_progress_on;
1002 sigaction(SIGUSR1, &sa, 0);
1003 sa.sa_handler = signal_progress_off;
1004 sigaction(SIGUSR2, &sa, 0);
1005 #endif
1006
1007 /* Update our PATH to include /sbin if we need to run badblocks */
1008 if (cflag) {
1009 char *oldpath = getenv("PATH");
1010 char *newpath;
1011 int len = sizeof(PATH_SET) + 1;
1012
1013 if (oldpath)
1014 len += strlen(oldpath);
1015
1016 newpath = malloc(len);
1017 if (!newpath)
1018 fatal_error(ctx, "Couldn't malloc() newpath");
1019 strcpy(newpath, PATH_SET);
1020
1021 if (oldpath) {
1022 strcat(newpath, ":");
1023 strcat(newpath, oldpath);
1024 }
1025 putenv(newpath);
1026 }
1027 #ifdef CONFIG_JBD_DEBUG
1028 jbd_debug = getenv("E2FSCK_JBD_DEBUG");
1029 if (jbd_debug) {
1030 res = sscanf(jbd_debug, "%d", &journal_enable_debug);
1031 if (res != 1) {
1032 fprintf(stderr,
1033 _("E2FSCK_JBD_DEBUG \"%s\" not an integer\n\n"),
1034 jbd_debug);
1035 exit (1);
1036 }
1037 }
1038 #endif
1039 return 0;
1040
1041 sscanf_err:
1042 fprintf(stderr, _("\nInvalid non-numeric argument to -%c (\"%s\")\n\n"),
1043 c, optarg);
1044 exit (1);
1045 }
1046
1047 static errcode_t try_open_fs(e2fsck_t ctx, int flags, io_manager io_ptr,
1048 ext2_filsys *ret_fs)
1049 {
1050 errcode_t retval;
1051
1052 *ret_fs = NULL;
1053 if (ctx->superblock && ctx->blocksize) {
1054 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
1055 flags, ctx->superblock, ctx->blocksize,
1056 io_ptr, ret_fs);
1057 } else if (ctx->superblock) {
1058 int blocksize;
1059 for (blocksize = EXT2_MIN_BLOCK_SIZE;
1060 blocksize <= EXT2_MAX_BLOCK_SIZE; blocksize *= 2) {
1061 if (*ret_fs) {
1062 ext2fs_free(*ret_fs);
1063 *ret_fs = NULL;
1064 }
1065 retval = ext2fs_open2(ctx->filesystem_name,
1066 ctx->io_options, flags,
1067 ctx->superblock, blocksize,
1068 io_ptr, ret_fs);
1069 if (!retval)
1070 break;
1071 }
1072 } else
1073 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
1074 flags, 0, 0, io_ptr, ret_fs);
1075
1076 if (retval == 0) {
1077 (*ret_fs)->priv_data = ctx;
1078 e2fsck_set_bitmap_type(*ret_fs, EXT2FS_BMAP64_RBTREE,
1079 "default", NULL);
1080 }
1081 return retval;
1082 }
1083
1084 static const char *my_ver_string = E2FSPROGS_VERSION;
1085 static const char *my_ver_date = E2FSPROGS_DATE;
1086
1087 static errcode_t e2fsck_check_mmp(ext2_filsys fs, e2fsck_t ctx)
1088 {
1089 struct mmp_struct *mmp_s;
1090 unsigned int mmp_check_interval;
1091 errcode_t retval = 0;
1092 struct problem_context pctx;
1093 unsigned int wait_time = 0;
1094
1095 clear_problem_context(&pctx);
1096 if (fs->mmp_buf == NULL) {
1097 retval = ext2fs_get_mem(fs->blocksize, &fs->mmp_buf);
1098 if (retval)
1099 goto check_error;
1100 }
1101
1102 retval = ext2fs_mmp_read(fs, fs->super->s_mmp_block, fs->mmp_buf);
1103 if (retval)
1104 goto check_error;
1105
1106 mmp_s = fs->mmp_buf;
1107
1108 mmp_check_interval = fs->super->s_mmp_update_interval;
1109 if (mmp_check_interval < EXT4_MMP_MIN_CHECK_INTERVAL)
1110 mmp_check_interval = EXT4_MMP_MIN_CHECK_INTERVAL;
1111
1112 /*
1113 * If check_interval in MMP block is larger, use that instead of
1114 * check_interval from the superblock.
1115 */
1116 if (mmp_s->mmp_check_interval > mmp_check_interval)
1117 mmp_check_interval = mmp_s->mmp_check_interval;
1118
1119 wait_time = mmp_check_interval * 2 + 1;
1120
1121 if (mmp_s->mmp_seq == EXT4_MMP_SEQ_CLEAN)
1122 retval = 0;
1123 else if (mmp_s->mmp_seq == EXT4_MMP_SEQ_FSCK)
1124 retval = EXT2_ET_MMP_FSCK_ON;
1125 else if (mmp_s->mmp_seq > EXT4_MMP_SEQ_MAX)
1126 retval = EXT2_ET_MMP_UNKNOWN_SEQ;
1127
1128 if (retval)
1129 goto check_error;
1130
1131 /* Print warning if e2fck will wait for more than 20 secs. */
1132 if (verbose || wait_time > EXT4_MMP_MIN_CHECK_INTERVAL * 4) {
1133 log_out(ctx, _("MMP interval is %u seconds and total wait "
1134 "time is %u seconds. Please wait...\n"),
1135 mmp_check_interval, wait_time * 2);
1136 }
1137
1138 return 0;
1139
1140 check_error:
1141
1142 if (retval == EXT2_ET_MMP_BAD_BLOCK) {
1143 if (fix_problem(ctx, PR_0_MMP_INVALID_BLK, &pctx)) {
1144 fs->super->s_mmp_block = 0;
1145 ext2fs_mark_super_dirty(fs);
1146 retval = 0;
1147 }
1148 } else if (retval == EXT2_ET_MMP_FAILED) {
1149 com_err(ctx->program_name, retval, "%s",
1150 _("while checking MMP block"));
1151 dump_mmp_msg(fs->mmp_buf, NULL);
1152 } else if (retval == EXT2_ET_MMP_FSCK_ON ||
1153 retval == EXT2_ET_MMP_UNKNOWN_SEQ) {
1154 com_err(ctx->program_name, retval, "%s",
1155 _("while checking MMP block"));
1156 dump_mmp_msg(fs->mmp_buf,
1157 _("If you are sure the filesystem is not "
1158 "in use on any node, run:\n"
1159 "'tune2fs -f -E clear_mmp {device}'\n"));
1160 } else if (retval == EXT2_ET_MMP_MAGIC_INVALID) {
1161 if (fix_problem(ctx, PR_0_MMP_INVALID_MAGIC, &pctx)) {
1162 ext2fs_mmp_clear(fs);
1163 retval = 0;
1164 }
1165 } else if (retval == EXT2_ET_MMP_CSUM_INVALID) {
1166 if (fix_problem(ctx, PR_0_MMP_CSUM_INVALID, &pctx)) {
1167 ext2fs_mmp_clear(fs);
1168 retval = 0;
1169 }
1170 }
1171 return retval;
1172 }
1173
1174 int main (int argc, char *argv[])
1175 {
1176 errcode_t retval = 0, retval2 = 0, orig_retval = 0;
1177 int exit_value = FSCK_OK;
1178 ext2_filsys fs = 0;
1179 io_manager io_ptr;
1180 struct ext2_super_block *sb;
1181 const char *lib_ver_date;
1182 int my_ver, lib_ver;
1183 e2fsck_t ctx;
1184 blk64_t orig_superblock;
1185 struct problem_context pctx;
1186 int flags, run_result;
1187 int journal_size;
1188 int sysval, sys_page_size = 4096;
1189 int old_bitmaps;
1190 __u32 features[3];
1191 char *cp;
1192 int qtype = -99; /* quota type */
1193
1194 clear_problem_context(&pctx);
1195 sigcatcher_setup();
1196 #ifdef MTRACE
1197 mtrace();
1198 #endif
1199 #ifdef MCHECK
1200 mcheck(0);
1201 #endif
1202 #ifdef ENABLE_NLS
1203 setlocale(LC_MESSAGES, "");
1204 setlocale(LC_CTYPE, "");
1205 bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1206 textdomain(NLS_CAT_NAME);
1207 set_com_err_gettext(gettext);
1208 #endif
1209 my_ver = ext2fs_parse_version_string(my_ver_string);
1210 lib_ver = ext2fs_get_library_version(0, &lib_ver_date);
1211 if (my_ver > lib_ver) {
1212 fprintf( stderr, "%s",
1213 _("Error: ext2fs library version out of date!\n"));
1214 show_version_only++;
1215 }
1216
1217 retval = PRS(argc, argv, &ctx);
1218 if (retval) {
1219 com_err("e2fsck", retval, "%s",
1220 _("while trying to initialize program"));
1221 exit(FSCK_ERROR);
1222 }
1223 reserve_stdio_fds();
1224
1225 set_up_logging(ctx);
1226 if (ctx->logf) {
1227 int i;
1228 fputs("E2fsck run: ", ctx->logf);
1229 for (i = 0; i < argc; i++) {
1230 if (i)
1231 fputc(' ', ctx->logf);
1232 fputs(argv[i], ctx->logf);
1233 }
1234 fputc('\n', ctx->logf);
1235 }
1236
1237 init_resource_track(&ctx->global_rtrack, NULL);
1238 if (!(ctx->options & E2F_OPT_PREEN) || show_version_only)
1239 log_err(ctx, "e2fsck %s (%s)\n", my_ver_string,
1240 my_ver_date);
1241
1242 if (show_version_only) {
1243 log_err(ctx, _("\tUsing %s, %s\n"),
1244 error_message(EXT2_ET_BASE), lib_ver_date);
1245 exit(FSCK_OK);
1246 }
1247
1248 check_mount(ctx);
1249
1250 if (!(ctx->options & E2F_OPT_PREEN) &&
1251 !(ctx->options & E2F_OPT_NO) &&
1252 !(ctx->options & E2F_OPT_YES)) {
1253 if (!ctx->interactive)
1254 fatal_error(ctx,
1255 _("need terminal for interactive repairs"));
1256 }
1257 ctx->superblock = ctx->use_superblock;
1258
1259 flags = EXT2_FLAG_SKIP_MMP;
1260 restart:
1261 #ifdef CONFIG_TESTIO_DEBUG
1262 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1263 io_ptr = test_io_manager;
1264 test_io_backing_manager = unix_io_manager;
1265 } else
1266 #endif
1267 io_ptr = unix_io_manager;
1268 flags |= EXT2_FLAG_NOFREE_ON_ERROR;
1269 profile_get_boolean(ctx->profile, "options", "old_bitmaps", 0, 0,
1270 &old_bitmaps);
1271 if (!old_bitmaps)
1272 flags |= EXT2_FLAG_64BITS;
1273 if ((ctx->options & E2F_OPT_READONLY) == 0) {
1274 flags |= EXT2_FLAG_RW;
1275 if (!(ctx->mount_flags & EXT2_MF_ISROOT &&
1276 ctx->mount_flags & EXT2_MF_READONLY))
1277 flags |= EXT2_FLAG_EXCLUSIVE;
1278 if ((ctx->mount_flags & EXT2_MF_READONLY) &&
1279 (ctx->options & E2F_OPT_FORCE))
1280 flags &= ~EXT2_FLAG_EXCLUSIVE;
1281 }
1282
1283 retval = try_open_fs(ctx, flags, io_ptr, &fs);
1284
1285 if (!ctx->superblock && !(ctx->options & E2F_OPT_PREEN) &&
1286 !(ctx->flags & E2F_FLAG_SB_SPECIFIED) &&
1287 ((retval == EXT2_ET_BAD_MAGIC) ||
1288 (retval == EXT2_ET_SB_CSUM_INVALID) ||
1289 (retval == EXT2_ET_CORRUPT_SUPERBLOCK) ||
1290 ((retval == 0) && (retval2 = ext2fs_check_desc(fs))))) {
1291 if (retval) {
1292 pctx.errcode = retval;
1293 fix_problem(ctx, PR_0_OPEN_FAILED, &pctx);
1294 }
1295 if (retval2) {
1296 pctx.errcode = retval2;
1297 fix_problem(ctx, PR_0_CHECK_DESC_FAILED, &pctx);
1298 }
1299 pctx.errcode = 0;
1300 if (retval2 == ENOMEM || retval2 == EXT2_ET_NO_MEMORY) {
1301 retval = retval2;
1302 goto failure;
1303 }
1304 if (fs->flags & EXT2_FLAG_NOFREE_ON_ERROR) {
1305 ext2fs_free(fs);
1306 fs = NULL;
1307 }
1308 if (!fs || (fs->group_desc_count > 1)) {
1309 log_out(ctx, _("%s: %s trying backup blocks...\n"),
1310 ctx->program_name,
1311 retval ? _("Superblock invalid,") :
1312 _("Group descriptors look bad..."));
1313 orig_superblock = ctx->superblock;
1314 get_backup_sb(ctx, fs, ctx->filesystem_name, io_ptr);
1315 if (fs)
1316 ext2fs_close(fs);
1317 orig_retval = retval;
1318 retval = try_open_fs(ctx, flags, io_ptr, &fs);
1319 if ((orig_retval == 0) && retval != 0) {
1320 if (fs)
1321 ext2fs_close(fs);
1322 log_out(ctx, _("%s: %s while using the "
1323 "backup blocks"),
1324 ctx->program_name,
1325 error_message(retval));
1326 log_out(ctx, _("%s: going back to original "
1327 "superblock\n"),
1328 ctx->program_name);
1329 ctx->superblock = orig_superblock;
1330 retval = try_open_fs(ctx, flags, io_ptr, &fs);
1331 }
1332 }
1333 }
1334 if (((retval == EXT2_ET_UNSUPP_FEATURE) ||
1335 (retval == EXT2_ET_RO_UNSUPP_FEATURE)) &&
1336 fs && fs->super) {
1337 sb = fs->super;
1338 features[0] = (sb->s_feature_compat &
1339 ~EXT2_LIB_FEATURE_COMPAT_SUPP);
1340 features[1] = (sb->s_feature_incompat &
1341 ~EXT2_LIB_FEATURE_INCOMPAT_SUPP);
1342 features[2] = (sb->s_feature_ro_compat &
1343 ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
1344 if (features[0] || features[1] || features[2])
1345 goto print_unsupp_features;
1346 }
1347 failure:
1348 if (retval) {
1349 if (orig_retval)
1350 retval = orig_retval;
1351 com_err(ctx->program_name, retval, _("while trying to open %s"),
1352 ctx->filesystem_name);
1353 if (retval == EXT2_ET_REV_TOO_HIGH) {
1354 log_out(ctx, "%s",
1355 _("The filesystem revision is apparently "
1356 "too high for this version of e2fsck.\n"
1357 "(Or the filesystem superblock "
1358 "is corrupt)\n\n"));
1359 fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
1360 } else if (retval == EXT2_ET_SHORT_READ)
1361 log_out(ctx, "%s",
1362 _("Could this be a zero-length partition?\n"));
1363 else if ((retval == EPERM) || (retval == EACCES))
1364 log_out(ctx, _("You must have %s access to the "
1365 "filesystem or be root\n"),
1366 (ctx->options & E2F_OPT_READONLY) ?
1367 "r/o" : "r/w");
1368 else if (retval == ENXIO)
1369 log_out(ctx, "%s",
1370 _("Possibly non-existent or swap device?\n"));
1371 else if (retval == EBUSY)
1372 log_out(ctx, "%s", _("Filesystem mounted or opened "
1373 "exclusively by another program?\n"));
1374 else if (retval == ENOENT)
1375 log_out(ctx, "%s",
1376 _("Possibly non-existent device?\n"));
1377 #ifdef EROFS
1378 else if (retval == EROFS)
1379 log_out(ctx, "%s", _("Disk write-protected; use the "
1380 "-n option to do a read-only\n"
1381 "check of the device.\n"));
1382 #endif
1383 else
1384 fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
1385 fatal_error(ctx, 0);
1386 }
1387 /*
1388 * We only update the master superblock because (a) paranoia;
1389 * we don't want to corrupt the backup superblocks, and (b) we
1390 * don't need to update the mount count and last checked
1391 * fields in the backup superblock (the kernel doesn't update
1392 * the backup superblocks anyway). With newer versions of the
1393 * library this flag is set by ext2fs_open2(), but we set this
1394 * here just to be sure. (No, we don't support e2fsck running
1395 * with some other libext2fs than the one that it was shipped
1396 * with, but just in case....)
1397 */
1398 fs->flags |= EXT2_FLAG_MASTER_SB_ONLY;
1399
1400 if (!(ctx->flags & E2F_FLAG_GOT_DEVSIZE)) {
1401 __u32 blocksize = EXT2_BLOCK_SIZE(fs->super);
1402 int need_restart = 0;
1403
1404 pctx.errcode = ext2fs_get_device_size2(ctx->filesystem_name,
1405 blocksize,
1406 &ctx->num_blocks);
1407 /*
1408 * The floppy driver refuses to allow anyone else to
1409 * open the device if has been opened with O_EXCL;
1410 * this is unlike other block device drivers in Linux.
1411 * To handle this, we close the filesystem and then
1412 * reopen the filesystem after we get the device size.
1413 */
1414 if (pctx.errcode == EBUSY) {
1415 ext2fs_close(fs);
1416 need_restart++;
1417 pctx.errcode =
1418 ext2fs_get_device_size2(ctx->filesystem_name,
1419 blocksize,
1420 &ctx->num_blocks);
1421 }
1422 if (pctx.errcode == EXT2_ET_UNIMPLEMENTED)
1423 ctx->num_blocks = 0;
1424 else if (pctx.errcode) {
1425 fix_problem(ctx, PR_0_GETSIZE_ERROR, &pctx);
1426 ctx->flags |= E2F_FLAG_ABORT;
1427 fatal_error(ctx, 0);
1428 }
1429 ctx->flags |= E2F_FLAG_GOT_DEVSIZE;
1430 if (need_restart)
1431 goto restart;
1432 }
1433
1434 ctx->fs = fs;
1435 fs->now = ctx->now;
1436 sb = fs->super;
1437
1438 if (sb->s_rev_level > E2FSCK_CURRENT_REV) {
1439 com_err(ctx->program_name, EXT2_ET_REV_TOO_HIGH,
1440 _("while trying to open %s"),
1441 ctx->filesystem_name);
1442 get_newer:
1443 fatal_error(ctx, _("Get a newer version of e2fsck!"));
1444 }
1445
1446 /*
1447 * Set the device name, which is used whenever we print error
1448 * or informational messages to the user.
1449 */
1450 if (ctx->device_name == 0 &&
1451 (sb->s_volume_name[0] != 0)) {
1452 ctx->device_name = string_copy(ctx, sb->s_volume_name,
1453 sizeof(sb->s_volume_name));
1454 }
1455 if (ctx->device_name == 0)
1456 ctx->device_name = string_copy(ctx, ctx->filesystem_name, 0);
1457 for (cp = ctx->device_name; *cp; cp++)
1458 if (isspace(*cp) || *cp == ':')
1459 *cp = '_';
1460
1461 ehandler_init(fs->io);
1462
1463 if ((fs->super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_MMP) &&
1464 (flags & EXT2_FLAG_SKIP_MMP)) {
1465 if (e2fsck_check_mmp(fs, ctx))
1466 fatal_error(ctx, 0);
1467
1468 /*
1469 * Restart in order to reopen fs but this time start mmp.
1470 */
1471 ext2fs_close(fs);
1472 ctx->fs = NULL;
1473 flags &= ~EXT2_FLAG_SKIP_MMP;
1474 goto restart;
1475 }
1476
1477 if (ctx->logf)
1478 fprintf(ctx->logf, "Filesystem UUID: %s\n",
1479 e2p_uuid2str(sb->s_uuid));
1480
1481 /*
1482 * Make sure the ext3 superblock fields are consistent.
1483 */
1484 retval = e2fsck_check_ext3_journal(ctx);
1485 if (retval) {
1486 com_err(ctx->program_name, retval,
1487 _("while checking ext3 journal for %s"),
1488 ctx->device_name);
1489 fatal_error(ctx, 0);
1490 }
1491
1492 /*
1493 * Check to see if we need to do ext3-style recovery. If so,
1494 * do it, and then restart the fsck.
1495 */
1496 if (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) {
1497 if (ctx->options & E2F_OPT_READONLY) {
1498 log_out(ctx, "%s",
1499 _("Warning: skipping journal recovery because "
1500 "doing a read-only filesystem check.\n"));
1501 io_channel_flush(ctx->fs->io);
1502 } else {
1503 if (ctx->flags & E2F_FLAG_RESTARTED) {
1504 /*
1505 * Whoops, we attempted to run the
1506 * journal twice. This should never
1507 * happen, unless the hardware or
1508 * device driver is being bogus.
1509 */
1510 com_err(ctx->program_name, 0,
1511 _("unable to set superblock flags "
1512 "on %s\n"), ctx->device_name);
1513 fatal_error(ctx, 0);
1514 }
1515 retval = e2fsck_run_ext3_journal(ctx);
1516 if (retval) {
1517 com_err(ctx->program_name, retval,
1518 _("while recovering ext3 journal of %s"),
1519 ctx->device_name);
1520 fatal_error(ctx, 0);
1521 }
1522 ext2fs_close(ctx->fs);
1523 ctx->fs = 0;
1524 ctx->flags |= E2F_FLAG_RESTARTED;
1525 goto restart;
1526 }
1527 }
1528
1529 /*
1530 * Check for compatibility with the feature sets. We need to
1531 * be more stringent than ext2fs_open().
1532 */
1533 features[0] = sb->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP;
1534 features[1] = sb->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP;
1535 features[2] = (sb->s_feature_ro_compat &
1536 ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
1537 print_unsupp_features:
1538 if (features[0] || features[1] || features[2]) {
1539 int i, j;
1540 __u32 *mask = features, m;
1541
1542 log_err(ctx, _("%s has unsupported feature(s):"),
1543 ctx->filesystem_name);
1544
1545 for (i=0; i <3; i++,mask++) {
1546 for (j=0,m=1; j < 32; j++, m<<=1) {
1547 if (*mask & m)
1548 log_err(ctx, " %s",
1549 e2p_feature2string(i, m));
1550 }
1551 }
1552 log_err(ctx, "\n");
1553 goto get_newer;
1554 }
1555 #ifdef ENABLE_COMPRESSION
1556 if (sb->s_feature_incompat & EXT2_FEATURE_INCOMPAT_COMPRESSION)
1557 log_err(ctx, _("%s: warning: compression support "
1558 "is experimental.\n"),
1559 ctx->program_name);
1560 #endif
1561 #ifndef ENABLE_HTREE
1562 if (sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) {
1563 log_err(ctx, _("%s: e2fsck not compiled with HTREE support,\n\t"
1564 "but filesystem %s has HTREE directories.\n"),
1565 ctx->program_name, ctx->device_name);
1566 goto get_newer;
1567 }
1568 #endif
1569
1570 /*
1571 * If the user specified a specific superblock, presumably the
1572 * master superblock has been trashed. So we mark the
1573 * superblock as dirty, so it can be written out.
1574 */
1575 if (ctx->superblock &&
1576 !(ctx->options & E2F_OPT_READONLY))
1577 ext2fs_mark_super_dirty(fs);
1578
1579 /*
1580 * Calculate the number of filesystem blocks per pagesize. If
1581 * fs->blocksize > page_size, set the number of blocks per
1582 * pagesize to 1 to avoid division by zero errors.
1583 */
1584 #ifdef _SC_PAGESIZE
1585 sysval = sysconf(_SC_PAGESIZE);
1586 if (sysval > 0)
1587 sys_page_size = sysval;
1588 #endif /* _SC_PAGESIZE */
1589 ctx->blocks_per_page = sys_page_size / fs->blocksize;
1590 if (ctx->blocks_per_page == 0)
1591 ctx->blocks_per_page = 1;
1592
1593 if (ctx->superblock)
1594 set_latch_flags(PR_LATCH_RELOC, PRL_LATCHED, 0);
1595 ext2fs_mark_valid(fs);
1596 check_super_block(ctx);
1597 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1598 fatal_error(ctx, 0);
1599 check_if_skip(ctx);
1600 check_resize_inode(ctx);
1601 if (bad_blocks_file)
1602 read_bad_blocks_file(ctx, bad_blocks_file, replace_bad_blocks);
1603 else if (cflag)
1604 read_bad_blocks_file(ctx, 0, !keep_bad_blocks); /* Test disk */
1605 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1606 fatal_error(ctx, 0);
1607
1608 /*
1609 * Mark the system as valid, 'til proven otherwise
1610 */
1611 ext2fs_mark_valid(fs);
1612
1613 retval = ext2fs_read_bb_inode(fs, &fs->badblocks);
1614 if (retval) {
1615 log_out(ctx, _("%s: %s while reading bad blocks inode\n"),
1616 ctx->program_name, error_message(retval));
1617 preenhalt(ctx);
1618 log_out(ctx, "%s", _("This doesn't bode well, "
1619 "but we'll try to go on...\n"));
1620 }
1621
1622 /*
1623 * Save the journal size in megabytes.
1624 * Try and use the journal size from the backup else let e2fsck
1625 * find the default journal size.
1626 */
1627 if (sb->s_jnl_backup_type == EXT3_JNL_BACKUP_BLOCKS)
1628 journal_size = (sb->s_jnl_blocks[15] << (32 - 20)) |
1629 (sb->s_jnl_blocks[16] >> 20);
1630 else
1631 journal_size = -1;
1632
1633 if (sb->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_QUOTA) {
1634 /* Quotas were enabled. Do quota accounting during fsck. */
1635 if ((sb->s_usr_quota_inum && sb->s_grp_quota_inum) ||
1636 (!sb->s_usr_quota_inum && !sb->s_grp_quota_inum))
1637 qtype = -1;
1638 else
1639 qtype = sb->s_usr_quota_inum ? USRQUOTA : GRPQUOTA;
1640
1641 quota_init_context(&ctx->qctx, ctx->fs, qtype);
1642 }
1643
1644 run_result = e2fsck_run(ctx);
1645 e2fsck_clear_progbar(ctx);
1646
1647 if (ctx->flags & E2F_FLAG_JOURNAL_INODE) {
1648 if (fix_problem(ctx, PR_6_RECREATE_JOURNAL, &pctx)) {
1649 if (journal_size < 1024)
1650 journal_size = ext2fs_default_journal_size(ext2fs_blocks_count(fs->super));
1651 if (journal_size < 0) {
1652 fs->super->s_feature_compat &=
1653 ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
1654 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1655 log_out(ctx, "%s: Couldn't determine "
1656 "journal size\n", ctx->program_name);
1657 goto no_journal;
1658 }
1659 log_out(ctx, _("Creating journal (%d blocks): "),
1660 journal_size);
1661 fflush(stdout);
1662 retval = ext2fs_add_journal_inode(fs,
1663 journal_size, 0);
1664 if (retval) {
1665 log_out(ctx, "%s: while trying to create "
1666 "journal\n", error_message(retval));
1667 goto no_journal;
1668 }
1669 log_out(ctx, "%s", _(" Done.\n"));
1670 log_out(ctx, "%s",
1671 _("\n*** journal has been re-created - "
1672 "filesystem is now ext3 again ***\n"));
1673 }
1674 }
1675 no_journal:
1676
1677 if (ctx->qctx) {
1678 int i, needs_writeout;
1679 for (i = 0; i < MAXQUOTAS; i++) {
1680 if (qtype != -1 && qtype != i)
1681 continue;
1682 needs_writeout = 0;
1683 pctx.num = i;
1684 retval = quota_compare_and_update(ctx->qctx, i,
1685 &needs_writeout);
1686 if ((retval || needs_writeout) &&
1687 fix_problem(ctx, PR_6_UPDATE_QUOTAS, &pctx))
1688 quota_write_inode(ctx->qctx, i);
1689 }
1690 quota_release_context(&ctx->qctx);
1691 }
1692
1693 if (run_result == E2F_FLAG_RESTART) {
1694 log_out(ctx, "%s",
1695 _("Restarting e2fsck from the beginning...\n"));
1696 retval = e2fsck_reset_context(ctx);
1697 if (retval) {
1698 com_err(ctx->program_name, retval, "%s",
1699 _("while resetting context"));
1700 fatal_error(ctx, 0);
1701 }
1702 ext2fs_close(fs);
1703 goto restart;
1704 }
1705 if (run_result & E2F_FLAG_CANCEL) {
1706 log_out(ctx, _("%s: e2fsck canceled.\n"), ctx->device_name ?
1707 ctx->device_name : ctx->filesystem_name);
1708 exit_value |= FSCK_CANCELED;
1709 }
1710 if (run_result & E2F_FLAG_ABORT)
1711 fatal_error(ctx, _("aborted"));
1712 if (check_backup_super_block(ctx)) {
1713 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1714 ext2fs_mark_super_dirty(fs);
1715 }
1716
1717 #ifdef MTRACE
1718 mtrace_print("Cleanup");
1719 #endif
1720 if (ext2fs_test_changed(fs)) {
1721 exit_value |= FSCK_NONDESTRUCT;
1722 if (!(ctx->options & E2F_OPT_PREEN))
1723 log_out(ctx, _("\n%s: ***** FILE SYSTEM WAS "
1724 "MODIFIED *****\n"),
1725 ctx->device_name);
1726 if (ctx->mount_flags & EXT2_MF_ISROOT) {
1727 log_out(ctx, _("%s: ***** REBOOT LINUX *****\n"),
1728 ctx->device_name);
1729 exit_value |= FSCK_REBOOT;
1730 }
1731 }
1732 if (!ext2fs_test_valid(fs) ||
1733 ((exit_value & FSCK_CANCELED) &&
1734 (sb->s_state & EXT2_ERROR_FS))) {
1735 log_out(ctx, _("\n%s: ********** WARNING: Filesystem still has "
1736 "errors **********\n\n"), ctx->device_name);
1737 exit_value |= FSCK_UNCORRECTED;
1738 exit_value &= ~FSCK_NONDESTRUCT;
1739 }
1740 if (exit_value & FSCK_CANCELED) {
1741 int allow_cancellation;
1742
1743 profile_get_boolean(ctx->profile, "options",
1744 "allow_cancellation", 0, 0,
1745 &allow_cancellation);
1746 exit_value &= ~FSCK_NONDESTRUCT;
1747 if (allow_cancellation && ext2fs_test_valid(fs) &&
1748 (sb->s_state & EXT2_VALID_FS) &&
1749 !(sb->s_state & EXT2_ERROR_FS))
1750 exit_value = 0;
1751 } else {
1752 show_stats(ctx);
1753 if (!(ctx->options & E2F_OPT_READONLY)) {
1754 if (ext2fs_test_valid(fs)) {
1755 if (!(sb->s_state & EXT2_VALID_FS))
1756 exit_value |= FSCK_NONDESTRUCT;
1757 sb->s_state = EXT2_VALID_FS;
1758 } else
1759 sb->s_state &= ~EXT2_VALID_FS;
1760 sb->s_mnt_count = 0;
1761 if (!(ctx->flags & E2F_FLAG_TIME_INSANE))
1762 sb->s_lastcheck = ctx->now;
1763 memset(((char *) sb) + EXT4_S_ERR_START, 0,
1764 EXT4_S_ERR_LEN);
1765 ext2fs_mark_super_dirty(fs);
1766 }
1767 }
1768
1769 if ((run_result & E2F_FLAG_CANCEL) == 0 &&
1770 ext2fs_has_group_desc_csum(ctx->fs) &&
1771 !(ctx->options & E2F_OPT_READONLY)) {
1772 retval = ext2fs_set_gdt_csum(ctx->fs);
1773 if (retval) {
1774 com_err(ctx->program_name, retval, "%s",
1775 _("while setting block group checksum info"));
1776 fatal_error(ctx, 0);
1777 }
1778 }
1779
1780 e2fsck_write_bitmaps(ctx);
1781 io_channel_flush(ctx->fs->io);
1782 print_resource_track(ctx, NULL, &ctx->global_rtrack, ctx->fs->io);
1783
1784 ext2fs_close(fs);
1785 ctx->fs = NULL;
1786 free(ctx->journal_name);
1787
1788 e2fsck_free_context(ctx);
1789 remove_error_table(&et_ext2_error_table);
1790 remove_error_table(&et_prof_error_table);
1791 return exit_value;
1792 }
Unnamed repository; edit this file 'description' to name the repository.