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 #include <libgen.h>
49
50 #include "e2p/e2p.h"
51 #include "et/com_err.h"
52 #include "e2p/e2p.h"
53 #include "uuid/uuid.h"
54 #include "support/plausible.h"
55 #include "e2fsck.h"
56 #include "problem.h"
57 #include "jfs_user.h"
58 #include "../version.h"
59
60 /* Command line options */
61 static int cflag; /* check disk */
62 static int show_version_only;
63 static int verbose;
64
65 static int replace_bad_blocks;
66 static int keep_bad_blocks;
67 static char *bad_blocks_file;
68
69 e2fsck_t e2fsck_global_ctx; /* Try your very best not to use this! */
70
71 #ifdef CONFIG_JBD_DEBUG /* Enabled by configure --enable-jbd-debug */
72 int journal_enable_debug = -1;
73 #endif
74
usage(e2fsck_t ctx)75 static void usage(e2fsck_t ctx)
76 {
77 fprintf(stderr,
78 _("Usage: %s [-panyrcdfktvDFV] [-b superblock] [-B blocksize]\n"
79 "\t\t[-l|-L bad_blocks_file] [-C fd] [-j external_journal]\n"
80 "\t\t[-E extended-options] [-z undo_file] device\n"),
81 ctx->program_name);
82
83 fprintf(stderr, "%s", _("\nEmergency help:\n"
84 " -p Automatic repair (no questions)\n"
85 " -n Make no changes to the filesystem\n"
86 " -y Assume \"yes\" to all questions\n"
87 " -c Check for bad blocks and add them to the badblock list\n"
88 " -f Force checking even if filesystem is marked clean\n"));
89 fprintf(stderr, "%s", _(""
90 " -v Be verbose\n"
91 " -b superblock Use alternative superblock\n"
92 " -B blocksize Force blocksize when looking for superblock\n"
93 " -j external_journal Set location of the external journal\n"
94 " -l bad_blocks_file Add to badblocks list\n"
95 " -L bad_blocks_file Set badblocks list\n"
96 " -z undo_file Create an undo file\n"
97 ));
98
99 exit(FSCK_USAGE);
100 }
101
show_stats(e2fsck_t ctx)102 static void show_stats(e2fsck_t ctx)
103 {
104 ext2_filsys fs = ctx->fs;
105 ext2_ino_t inodes, inodes_used;
106 blk64_t blocks, blocks_used;
107 unsigned int dir_links;
108 unsigned int num_files, num_links;
109 __u32 *mask, m;
110 int frag_percent_file = 0, frag_percent_dir = 0, frag_percent_total = 0;
111 int i, j, printed = 0;
112
113 dir_links = 2 * ctx->fs_directory_count - 1;
114 num_files = ctx->fs_total_count - dir_links;
115 num_links = ctx->fs_links_count - dir_links;
116 inodes = fs->super->s_inodes_count;
117 inodes_used = (fs->super->s_inodes_count -
118 fs->super->s_free_inodes_count);
119 blocks = ext2fs_blocks_count(fs->super);
120 blocks_used = (ext2fs_blocks_count(fs->super) -
121 ext2fs_free_blocks_count(fs->super));
122
123 if (inodes_used > 0) {
124 frag_percent_file = (10000 * ctx->fs_fragmented) / inodes_used;
125 frag_percent_file = (frag_percent_file + 5) / 10;
126
127 frag_percent_dir = (10000 * ctx->fs_fragmented_dir) / inodes_used;
128 frag_percent_dir = (frag_percent_dir + 5) / 10;
129
130 frag_percent_total = ((10000 * (ctx->fs_fragmented +
131 ctx->fs_fragmented_dir))
132 / inodes_used);
133 frag_percent_total = (frag_percent_total + 5) / 10;
134 }
135
136 if (!verbose) {
137 log_out(ctx, _("%s: %u/%u files (%0d.%d%% non-contiguous), "
138 "%llu/%llu blocks\n"),
139 ctx->device_name, inodes_used, inodes,
140 frag_percent_total / 10, frag_percent_total % 10,
141 (unsigned long long) blocks_used,
142 (unsigned long long) blocks);
143 return;
144 }
145 profile_get_boolean(ctx->profile, "options", "report_features", 0, 0,
146 &i);
147 if (verbose && i) {
148 log_out(ctx, "\nFilesystem features:");
149 mask = &ctx->fs->super->s_feature_compat;
150 for (i = 0; i < 3; i++, mask++) {
151 for (j = 0, m = 1; j < 32; j++, m <<= 1) {
152 if (*mask & m) {
153 log_out(ctx, " %s",
154 e2p_feature2string(i, m));
155 printed++;
156 }
157 }
158 }
159 if (printed == 0)
160 log_out(ctx, " (none)");
161 log_out(ctx, "\n");
162 }
163
164 log_out(ctx, P_("\n%12u inode used (%2.2f%%, out of %u)\n",
165 "\n%12u inodes used (%2.2f%%, out of %u)\n",
166 inodes_used), inodes_used,
167 100.0 * inodes_used / inodes, inodes);
168 log_out(ctx, P_("%12u non-contiguous file (%0d.%d%%)\n",
169 "%12u non-contiguous files (%0d.%d%%)\n",
170 ctx->fs_fragmented),
171 ctx->fs_fragmented, frag_percent_file / 10,
172 frag_percent_file % 10);
173 log_out(ctx, P_("%12u non-contiguous directory (%0d.%d%%)\n",
174 "%12u non-contiguous directories (%0d.%d%%)\n",
175 ctx->fs_fragmented_dir),
176 ctx->fs_fragmented_dir, frag_percent_dir / 10,
177 frag_percent_dir % 10);
178 log_out(ctx, _(" # of inodes with ind/dind/tind blocks: "
179 "%u/%u/%u\n"),
180 ctx->fs_ind_count, ctx->fs_dind_count, ctx->fs_tind_count);
181
182 for (j=MAX_EXTENT_DEPTH_COUNT-1; j >=0; j--)
183 if (ctx->extent_depth_count[j])
184 break;
185 if (++j) {
186 log_out(ctx, "%s", _(" Extent depth histogram: "));
187 for (i=0; i < j; i++) {
188 if (i)
189 fputc('/', stdout);
190 log_out(ctx, "%u", ctx->extent_depth_count[i]);
191 }
192 log_out(ctx, "\n");
193 }
194
195 log_out(ctx, P_("%12llu block used (%2.2f%%, out of %llu)\n",
196 "%12llu blocks used (%2.2f%%, out of %llu)\n",
197 blocks_used),
198 (unsigned long long) blocks_used, 100.0 * blocks_used / blocks,
199 (unsigned long long) blocks);
200 log_out(ctx, P_("%12u bad block\n", "%12u bad blocks\n",
201 ctx->fs_badblocks_count), ctx->fs_badblocks_count);
202 log_out(ctx, P_("%12u large file\n", "%12u large files\n",
203 ctx->large_files), ctx->large_files);
204 log_out(ctx, P_("\n%12u regular file\n", "\n%12u regular files\n",
205 ctx->fs_regular_count), ctx->fs_regular_count);
206 log_out(ctx, P_("%12u directory\n", "%12u directories\n",
207 ctx->fs_directory_count), ctx->fs_directory_count);
208 log_out(ctx, P_("%12u character device file\n",
209 "%12u character device files\n", ctx->fs_chardev_count),
210 ctx->fs_chardev_count);
211 log_out(ctx, P_("%12u block device file\n", "%12u block device files\n",
212 ctx->fs_blockdev_count), ctx->fs_blockdev_count);
213 log_out(ctx, P_("%12u fifo\n", "%12u fifos\n", ctx->fs_fifo_count),
214 ctx->fs_fifo_count);
215 log_out(ctx, P_("%12u link\n", "%12u links\n", num_links),
216 ctx->fs_links_count - dir_links);
217 log_out(ctx, P_("%12u symbolic link", "%12u symbolic links",
218 ctx->fs_symlinks_count), ctx->fs_symlinks_count);
219 log_out(ctx, P_(" (%u fast symbolic link)\n",
220 " (%u fast symbolic links)\n",
221 ctx->fs_fast_symlinks_count),
222 ctx->fs_fast_symlinks_count);
223 log_out(ctx, P_("%12u socket\n", "%12u sockets\n",
224 ctx->fs_sockets_count),
225 ctx->fs_sockets_count);
226 log_out(ctx, "------------\n");
227 log_out(ctx, P_("%12u file\n", "%12u files\n", num_files),
228 num_files);
229 }
230
check_mount(e2fsck_t ctx)231 static void check_mount(e2fsck_t ctx)
232 {
233 errcode_t retval;
234 int cont;
235
236 retval = ext2fs_check_if_mounted(ctx->filesystem_name,
237 &ctx->mount_flags);
238 if (retval) {
239 com_err("ext2fs_check_if_mount", retval,
240 _("while determining whether %s is mounted."),
241 ctx->filesystem_name);
242 return;
243 }
244
245 /*
246 * If the filesystem isn't mounted, or it's the root
247 * filesystem and it's mounted read-only, and we're not doing
248 * a read/write check, then everything's fine.
249 */
250 if ((!(ctx->mount_flags & (EXT2_MF_MOUNTED | EXT2_MF_BUSY))) ||
251 ((ctx->mount_flags & EXT2_MF_ISROOT) &&
252 (ctx->mount_flags & EXT2_MF_READONLY) &&
253 !(ctx->options & E2F_OPT_WRITECHECK)))
254 return;
255
256 if (((ctx->options & E2F_OPT_READONLY) ||
257 ((ctx->options & E2F_OPT_FORCE) &&
258 (ctx->mount_flags & EXT2_MF_READONLY))) &&
259 !(ctx->options & E2F_OPT_WRITECHECK)) {
260 if (ctx->mount_flags & EXT2_MF_MOUNTED)
261 log_out(ctx, _("Warning! %s is mounted.\n"),
262 ctx->filesystem_name);
263 else
264 log_out(ctx, _("Warning! %s is in use.\n"),
265 ctx->filesystem_name);
266 return;
267 }
268
269 if (ctx->mount_flags & EXT2_MF_MOUNTED)
270 log_out(ctx, _("%s is mounted.\n"), ctx->filesystem_name);
271 else
272 log_out(ctx, _("%s is in use.\n"), ctx->filesystem_name);
273 if (!ctx->interactive || ctx->mount_flags & EXT2_MF_BUSY)
274 fatal_error(ctx, _("Cannot continue, aborting.\n\n"));
275 puts("\007\007\007\007");
276 log_out(ctx, "%s", _("\n\nWARNING!!! "
277 "The filesystem is mounted. "
278 "If you continue you ***WILL***\n"
279 "cause ***SEVERE*** filesystem damage.\n\n"));
280 puts("\007\007\007");
281 cont = ask_yn(ctx, _("Do you really want to continue"), 0);
282 if (!cont) {
283 printf("%s", _("check aborted.\n"));
284 exit (0);
285 }
286 return;
287 }
288
is_on_batt(void)289 static int is_on_batt(void)
290 {
291 FILE *f;
292 DIR *d;
293 char tmp[80], tmp2[80], fname[NAME_MAX+30];
294 unsigned int acflag;
295 struct dirent* de;
296
297 f = fopen("/sys/class/power_supply/AC/online", "r");
298 if (f) {
299 if (fscanf(f, "%u\n", &acflag) == 1) {
300 fclose(f);
301 return (!acflag);
302 }
303 fclose(f);
304 }
305 f = fopen("/proc/apm", "r");
306 if (f) {
307 if (fscanf(f, "%79s %79s %79s %x", tmp, tmp, tmp, &acflag) != 4)
308 acflag = 1;
309 fclose(f);
310 return (acflag != 1);
311 }
312 d = opendir("/proc/acpi/ac_adapter");
313 if (d) {
314 while ((de=readdir(d)) != NULL) {
315 if (!strncmp(".", de->d_name, 1))
316 continue;
317 snprintf(fname, sizeof(fname),
318 "/proc/acpi/ac_adapter/%s/state",
319 de->d_name);
320 f = fopen(fname, "r");
321 if (!f)
322 continue;
323 if (fscanf(f, "%79s %79s", tmp2, tmp) != 2)
324 tmp[0] = 0;
325 fclose(f);
326 if (strncmp(tmp, "off-line", 8) == 0) {
327 closedir(d);
328 return 1;
329 }
330 }
331 closedir(d);
332 }
333 return 0;
334 }
335
336 /*
337 * This routine checks to see if a filesystem can be skipped; if so,
338 * it will exit with E2FSCK_OK. Under some conditions it will print a
339 * message explaining why a check is being forced.
340 */
check_if_skip(e2fsck_t ctx)341 static void check_if_skip(e2fsck_t ctx)
342 {
343 ext2_filsys fs = ctx->fs;
344 struct problem_context pctx;
345 const char *reason = NULL;
346 unsigned int reason_arg = 0;
347 long next_check;
348 int batt = is_on_batt();
349 int defer_check_on_battery;
350 int broken_system_clock;
351 time_t lastcheck;
352
353 if (ctx->flags & E2F_FLAG_PROBLEMS_FIXED)
354 return;
355
356 profile_get_boolean(ctx->profile, "options", "broken_system_clock",
357 0, 0, &broken_system_clock);
358 if (ctx->flags & E2F_FLAG_TIME_INSANE)
359 broken_system_clock = 1;
360 profile_get_boolean(ctx->profile, "options",
361 "defer_check_on_battery", 0, 1,
362 &defer_check_on_battery);
363 if (!defer_check_on_battery)
364 batt = 0;
365
366 if ((ctx->options & E2F_OPT_FORCE) || bad_blocks_file || cflag)
367 return;
368
369 if (ctx->options & E2F_OPT_JOURNAL_ONLY)
370 goto skip;
371
372 lastcheck = fs->super->s_lastcheck;
373 if (lastcheck > ctx->now)
374 lastcheck -= ctx->time_fudge;
375 if ((fs->super->s_state & EXT2_ERROR_FS) ||
376 !ext2fs_test_valid(fs))
377 reason = _(" contains a file system with errors");
378 else if ((fs->super->s_state & EXT2_VALID_FS) == 0)
379 reason = _(" was not cleanly unmounted");
380 else if (check_backup_super_block(ctx))
381 reason = _(" primary superblock features different from backup");
382 else if ((fs->super->s_max_mnt_count > 0) &&
383 (fs->super->s_mnt_count >=
384 (unsigned) fs->super->s_max_mnt_count)) {
385 reason = _(" has been mounted %u times without being checked");
386 reason_arg = fs->super->s_mnt_count;
387 if (batt && (fs->super->s_mnt_count <
388 (unsigned) fs->super->s_max_mnt_count*2))
389 reason = 0;
390 } else if (!broken_system_clock && fs->super->s_checkinterval &&
391 (ctx->now < lastcheck)) {
392 reason = _(" has filesystem last checked time in the future");
393 if (batt)
394 reason = 0;
395 } else if (!broken_system_clock && fs->super->s_checkinterval &&
396 ((ctx->now - lastcheck) >=
397 ((time_t) fs->super->s_checkinterval))) {
398 reason = _(" has gone %u days without being checked");
399 reason_arg = (ctx->now - fs->super->s_lastcheck)/(3600*24);
400 if (batt && ((ctx->now - fs->super->s_lastcheck) <
401 fs->super->s_checkinterval*2))
402 reason = 0;
403 } else if (broken_system_clock && fs->super->s_checkinterval) {
404 log_out(ctx, "%s: ", ctx->device_name);
405 log_out(ctx, "%s",
406 _("ignoring check interval, broken_system_clock set\n"));
407 }
408
409 if (reason) {
410 log_out(ctx, "%s", ctx->device_name);
411 log_out(ctx, reason, reason_arg);
412 log_out(ctx, "%s", _(", check forced.\n"));
413 return;
414 }
415
416 /*
417 * Update the global counts from the block group counts. This
418 * is needed since modern kernels don't update the global
419 * counts so as to avoid locking the entire file system. So
420 * if the filesystem is not unmounted cleanly, the global
421 * counts may not be accurate. Update them here if we can,
422 * for the benefit of users who might examine the file system
423 * using dumpe2fs. (This is for cosmetic reasons only.)
424 */
425 clear_problem_context(&pctx);
426 pctx.ino = fs->super->s_free_inodes_count;
427 pctx.ino2 = ctx->free_inodes;
428 if ((pctx.ino != pctx.ino2) &&
429 !(ctx->options & E2F_OPT_READONLY) &&
430 fix_problem(ctx, PR_0_FREE_INODE_COUNT, &pctx)) {
431 fs->super->s_free_inodes_count = ctx->free_inodes;
432 ext2fs_mark_super_dirty(fs);
433 }
434 clear_problem_context(&pctx);
435 pctx.blk = ext2fs_free_blocks_count(fs->super);
436 pctx.blk2 = ctx->free_blocks;
437 if ((pctx.blk != pctx.blk2) &&
438 !(ctx->options & E2F_OPT_READONLY) &&
439 fix_problem(ctx, PR_0_FREE_BLOCK_COUNT, &pctx)) {
440 ext2fs_free_blocks_count_set(fs->super, ctx->free_blocks);
441 ext2fs_mark_super_dirty(fs);
442 }
443
444 /* Print the summary message when we're skipping a full check */
445 log_out(ctx, _("%s: clean, %u/%u files, %llu/%llu blocks"),
446 ctx->device_name,
447 fs->super->s_inodes_count - fs->super->s_free_inodes_count,
448 fs->super->s_inodes_count,
449 (unsigned long long) ext2fs_blocks_count(fs->super) -
450 ext2fs_free_blocks_count(fs->super),
451 (unsigned long long) ext2fs_blocks_count(fs->super));
452 next_check = 100000;
453 if (fs->super->s_max_mnt_count > 0) {
454 next_check = fs->super->s_max_mnt_count - fs->super->s_mnt_count;
455 if (next_check <= 0)
456 next_check = 1;
457 }
458 if (!broken_system_clock && fs->super->s_checkinterval &&
459 ((ctx->now - fs->super->s_lastcheck) >= fs->super->s_checkinterval))
460 next_check = 1;
461 if (next_check <= 5) {
462 if (next_check == 1) {
463 if (batt)
464 log_out(ctx, "%s",
465 _(" (check deferred; on battery)"));
466 else
467 log_out(ctx, "%s",
468 _(" (check after next mount)"));
469 } else
470 log_out(ctx, _(" (check in %ld mounts)"),
471 next_check);
472 }
473 log_out(ctx, "\n");
474 skip:
475 ext2fs_close_free(&ctx->fs);
476 e2fsck_free_context(ctx);
477 exit(FSCK_OK);
478 }
479
480 /*
481 * For completion notice
482 */
483 struct percent_tbl {
484 int max_pass;
485 int table[32];
486 };
487 static struct percent_tbl e2fsck_tbl = {
488 5, { 0, 70, 90, 92, 95, 100 }
489 };
490 static char bar[128], spaces[128];
491
calc_percent(struct percent_tbl * tbl,int pass,int curr,int max)492 static float calc_percent(struct percent_tbl *tbl, int pass, int curr,
493 int max)
494 {
495 float percent;
496
497 if (pass <= 0)
498 return 0.0;
499 if (pass > tbl->max_pass || max == 0)
500 return 100.0;
501 percent = ((float) curr) / ((float) max);
502 return ((percent * (tbl->table[pass] - tbl->table[pass-1]))
503 + tbl->table[pass-1]);
504 }
505
e2fsck_clear_progbar(e2fsck_t ctx)506 void e2fsck_clear_progbar(e2fsck_t ctx)
507 {
508 if (!(ctx->flags & E2F_FLAG_PROG_BAR))
509 return;
510
511 printf("%s%s\r%s", ctx->start_meta, spaces + (sizeof(spaces) - 80),
512 ctx->stop_meta);
513 fflush(stdout);
514 ctx->flags &= ~E2F_FLAG_PROG_BAR;
515 }
516
e2fsck_simple_progress(e2fsck_t ctx,const char * label,float percent,unsigned int dpynum)517 int e2fsck_simple_progress(e2fsck_t ctx, const char *label, float percent,
518 unsigned int dpynum)
519 {
520 static const char spinner[] = "\\|/-";
521 int i;
522 unsigned int tick;
523 struct timeval tv;
524 int dpywidth;
525 int fixed_percent;
526
527 if (ctx->flags & E2F_FLAG_PROG_SUPPRESS)
528 return 0;
529
530 /*
531 * Calculate the new progress position. If the
532 * percentage hasn't changed, then we skip out right
533 * away.
534 */
535 fixed_percent = (int) ((10 * percent) + 0.5);
536 if (ctx->progress_last_percent == fixed_percent)
537 return 0;
538 ctx->progress_last_percent = fixed_percent;
539
540 /*
541 * If we've already updated the spinner once within
542 * the last 1/8th of a second, no point doing it
543 * again.
544 */
545 gettimeofday(&tv, NULL);
546 tick = (tv.tv_sec << 3) + (tv.tv_usec / (1000000 / 8));
547 if ((tick == ctx->progress_last_time) &&
548 (fixed_percent != 0) && (fixed_percent != 1000))
549 return 0;
550 ctx->progress_last_time = tick;
551
552 /*
553 * Advance the spinner, and note that the progress bar
554 * will be on the screen
555 */
556 ctx->progress_pos = (ctx->progress_pos+1) & 3;
557 ctx->flags |= E2F_FLAG_PROG_BAR;
558
559 dpywidth = 66 - strlen(label);
560 dpywidth = 8 * (dpywidth / 8);
561 if (dpynum)
562 dpywidth -= 8;
563
564 i = ((percent * dpywidth) + 50) / 100;
565 printf("%s%s: |%s%s", ctx->start_meta, label,
566 bar + (sizeof(bar) - (i+1)),
567 spaces + (sizeof(spaces) - (dpywidth - i + 1)));
568 if (fixed_percent == 1000)
569 fputc('|', stdout);
570 else
571 fputc(spinner[ctx->progress_pos & 3], stdout);
572 printf(" %4.1f%% ", percent);
573 if (dpynum)
574 printf("%u\r", dpynum);
575 else
576 fputs(" \r", stdout);
577 fputs(ctx->stop_meta, stdout);
578
579 if (fixed_percent == 1000)
580 e2fsck_clear_progbar(ctx);
581 fflush(stdout);
582
583 return 0;
584 }
585
e2fsck_update_progress(e2fsck_t ctx,int pass,unsigned long cur,unsigned long max)586 static int e2fsck_update_progress(e2fsck_t ctx, int pass,
587 unsigned long cur, unsigned long max)
588 {
589 char buf[1024];
590 float percent;
591
592 if (pass == 0)
593 return 0;
594
595 if (ctx->progress_fd) {
596 snprintf(buf, sizeof(buf), "%d %lu %lu %s\n",
597 pass, cur, max, ctx->device_name);
598 write_all(ctx->progress_fd, buf, strlen(buf));
599 } else {
600 percent = calc_percent(&e2fsck_tbl, pass, cur, max);
601 e2fsck_simple_progress(ctx, ctx->device_name,
602 percent, 0);
603 }
604 return 0;
605 }
606
607 #define PATH_SET "PATH=/sbin"
608
609 /*
610 * Make sure 0,1,2 file descriptors are open, so that we don't open
611 * the filesystem using the same file descriptor as stdout or stderr.
612 */
reserve_stdio_fds(void)613 static void reserve_stdio_fds(void)
614 {
615 int fd = 0;
616
617 while (fd <= 2) {
618 fd = open("/dev/null", O_RDWR);
619 if (fd < 0) {
620 fprintf(stderr, _("ERROR: Couldn't open "
621 "/dev/null (%s)\n"),
622 strerror(errno));
623 return;
624 }
625 }
626 (void) close(fd);
627 }
628
629 #ifdef HAVE_SIGNAL_H
signal_progress_on(int sig EXT2FS_ATTR ((unused)))630 static void signal_progress_on(int sig EXT2FS_ATTR((unused)))
631 {
632 e2fsck_t ctx = e2fsck_global_ctx;
633
634 if (!ctx)
635 return;
636
637 ctx->progress = e2fsck_update_progress;
638 }
639
signal_progress_off(int sig EXT2FS_ATTR ((unused)))640 static void signal_progress_off(int sig EXT2FS_ATTR((unused)))
641 {
642 e2fsck_t ctx = e2fsck_global_ctx;
643
644 if (!ctx)
645 return;
646
647 e2fsck_clear_progbar(ctx);
648 ctx->progress = 0;
649 }
650
signal_cancel(int sig EXT2FS_ATTR ((unused)))651 static void signal_cancel(int sig EXT2FS_ATTR((unused)))
652 {
653 e2fsck_t ctx = e2fsck_global_ctx;
654
655 if (!ctx)
656 exit(FSCK_CANCELED);
657
658 ctx->flags |= E2F_FLAG_CANCEL;
659 }
660 #endif
661
parse_extended_opts(e2fsck_t ctx,const char * opts)662 static void parse_extended_opts(e2fsck_t ctx, const char *opts)
663 {
664 char *buf, *token, *next, *p, *arg;
665 int ea_ver;
666 int extended_usage = 0;
667 unsigned long long reada_kb;
668
669 buf = string_copy(ctx, opts, 0);
670 for (token = buf; token && *token; token = next) {
671 p = strchr(token, ',');
672 next = 0;
673 if (p) {
674 *p = 0;
675 next = p+1;
676 }
677 arg = strchr(token, '=');
678 if (arg) {
679 *arg = 0;
680 arg++;
681 }
682 if (strcmp(token, "ea_ver") == 0) {
683 if (!arg) {
684 extended_usage++;
685 continue;
686 }
687 ea_ver = strtoul(arg, &p, 0);
688 if (*p ||
689 ((ea_ver != 1) && (ea_ver != 2))) {
690 fprintf(stderr, "%s",
691 _("Invalid EA version.\n"));
692 extended_usage++;
693 continue;
694 }
695 ctx->ext_attr_ver = ea_ver;
696 } else if (strcmp(token, "readahead_kb") == 0) {
697 if (!arg) {
698 extended_usage++;
699 continue;
700 }
701 reada_kb = strtoull(arg, &p, 0);
702 if (*p) {
703 fprintf(stderr, "%s",
704 _("Invalid readahead buffer size.\n"));
705 extended_usage++;
706 continue;
707 }
708 ctx->readahead_kb = reada_kb;
709 } else if (strcmp(token, "fragcheck") == 0) {
710 ctx->options |= E2F_OPT_FRAGCHECK;
711 continue;
712 } else if (strcmp(token, "journal_only") == 0) {
713 if (arg) {
714 extended_usage++;
715 continue;
716 }
717 ctx->options |= E2F_OPT_JOURNAL_ONLY;
718 } else if (strcmp(token, "discard") == 0) {
719 ctx->options |= E2F_OPT_DISCARD;
720 continue;
721 } else if (strcmp(token, "nodiscard") == 0) {
722 ctx->options &= ~E2F_OPT_DISCARD;
723 continue;
724 } else if (strcmp(token, "optimize_extents") == 0) {
725 ctx->options &= ~E2F_OPT_NOOPT_EXTENTS;
726 continue;
727 } else if (strcmp(token, "no_optimize_extents") == 0) {
728 ctx->options |= E2F_OPT_NOOPT_EXTENTS;
729 continue;
730 } else if (strcmp(token, "inode_count_fullmap") == 0) {
731 ctx->options |= E2F_OPT_ICOUNT_FULLMAP;
732 continue;
733 } else if (strcmp(token, "no_inode_count_fullmap") == 0) {
734 ctx->options &= ~E2F_OPT_ICOUNT_FULLMAP;
735 continue;
736 } else if (strcmp(token, "log_filename") == 0) {
737 if (!arg)
738 extended_usage++;
739 else
740 ctx->log_fn = string_copy(ctx, arg, 0);
741 continue;
742 } else if (strcmp(token, "problem_log") == 0) {
743 if (!arg)
744 extended_usage++;
745 else
746 ctx->problem_log_fn = string_copy(ctx, arg, 0);
747 continue;
748 } else if (strcmp(token, "bmap2extent") == 0) {
749 ctx->options |= E2F_OPT_CONVERT_BMAP;
750 continue;
751 } else if (strcmp(token, "fixes_only") == 0) {
752 ctx->options |= E2F_OPT_FIXES_ONLY;
753 continue;
754 } else if (strcmp(token, "unshare_blocks") == 0) {
755 ctx->options |= E2F_OPT_UNSHARE_BLOCKS;
756 ctx->options |= E2F_OPT_FORCE;
757 continue;
758 } else if (strcmp(token, "check_encoding") == 0) {
759 ctx->options |= E2F_OPT_CHECK_ENCODING;
760 continue;
761 #ifdef CONFIG_DEVELOPER_FEATURES
762 } else if (strcmp(token, "clear_all_uninit_bits") == 0) {
763 ctx->options |= E2F_OPT_CLEAR_UNINIT;
764 continue;
765 #endif
766 } else {
767 fprintf(stderr, _("Unknown extended option: %s\n"),
768 token);
769 extended_usage++;
770 }
771 }
772 free(buf);
773
774 if (extended_usage) {
775 fputs(_("\nExtended options are separated by commas, "
776 "and may take an argument which\n"
777 "is set off by an equals ('=') sign. "
778 "Valid extended options are:\n\n"), stderr);
779 fputs(_("\tea_ver=<ea_version (1 or 2)>\n"), stderr);
780 fputs("\tfragcheck\n", stderr);
781 fputs("\tjournal_only\n", stderr);
782 fputs("\tdiscard\n", stderr);
783 fputs("\tnodiscard\n", stderr);
784 fputs("\toptimize_extents\n", stderr);
785 fputs("\tno_optimize_extents\n", stderr);
786 fputs("\tinode_count_fullmap\n", stderr);
787 fputs("\tno_inode_count_fullmap\n", stderr);
788 fputs(_("\treadahead_kb=<buffer size>\n"), stderr);
789 fputs("\tbmap2extent\n", stderr);
790 fputs("\tunshare_blocks\n", stderr);
791 fputs("\tfixes_only\n", stderr);
792 fputs("\tcheck_encoding\n", stderr);
793 fputc('\n', stderr);
794 exit(1);
795 }
796 }
797
syntax_err_report(const char * filename,long err,int line_num)798 static void syntax_err_report(const char *filename, long err, int line_num)
799 {
800 fprintf(stderr,
801 _("Syntax error in e2fsck config file (%s, line #%d)\n\t%s\n"),
802 filename, line_num, error_message(err));
803 exit(FSCK_ERROR);
804 }
805
806 static const char *config_fn[] = { ROOT_SYSCONFDIR "/e2fsck.conf", 0 };
807
PRS(int argc,char * argv[],e2fsck_t * ret_ctx)808 static errcode_t PRS(int argc, char *argv[], e2fsck_t *ret_ctx)
809 {
810 int flush = 0;
811 int c, fd;
812 #ifdef MTRACE
813 extern void *mallwatch;
814 #endif
815 e2fsck_t ctx;
816 errcode_t retval;
817 #ifdef HAVE_SIGNAL_H
818 struct sigaction sa;
819 #endif
820 char *extended_opts = 0;
821 char *cp;
822 int res; /* result of sscanf */
823 #ifdef CONFIG_JBD_DEBUG
824 char *jbd_debug;
825 #endif
826 unsigned long long phys_mem_kb, blk;
827
828 retval = e2fsck_allocate_context(&ctx);
829 if (retval)
830 return retval;
831
832 *ret_ctx = ctx;
833 e2fsck_global_ctx = ctx;
834
835 setvbuf(stdout, NULL, _IONBF, BUFSIZ);
836 setvbuf(stderr, NULL, _IONBF, BUFSIZ);
837 if (getenv("E2FSCK_FORCE_INTERACTIVE") || (isatty(0) && isatty(1))) {
838 ctx->interactive = 1;
839 } else {
840 ctx->start_meta[0] = '\001';
841 ctx->stop_meta[0] = '\002';
842 }
843 memset(bar, '=', sizeof(bar)-1);
844 memset(spaces, ' ', sizeof(spaces)-1);
845 add_error_table(&et_ext2_error_table);
846 add_error_table(&et_prof_error_table);
847 blkid_get_cache(&ctx->blkid, NULL);
848
849 if (argc && *argv)
850 ctx->program_name = *argv;
851 else
852 ctx->program_name = "e2fsck";
853
854 phys_mem_kb = get_memory_size() / 1024;
855 ctx->readahead_kb = ~0ULL;
856 while ((c = getopt(argc, argv, "panyrcC:B:dE:fvtFVM:b:I:j:P:l:L:N:SsDkz:")) != EOF)
857 switch (c) {
858 case 'C':
859 ctx->progress = e2fsck_update_progress;
860 res = sscanf(optarg, "%d", &ctx->progress_fd);
861 if (res != 1)
862 goto sscanf_err;
863
864 if (ctx->progress_fd < 0) {
865 ctx->progress = 0;
866 ctx->progress_fd = ctx->progress_fd * -1;
867 }
868 if (!ctx->progress_fd)
869 break;
870 /* Validate the file descriptor to avoid disasters */
871 fd = dup(ctx->progress_fd);
872 if (fd < 0) {
873 fprintf(stderr,
874 _("Error validating file descriptor %d: %s\n"),
875 ctx->progress_fd,
876 error_message(errno));
877 fatal_error(ctx,
878 _("Invalid completion information file descriptor"));
879 } else
880 close(fd);
881 break;
882 case 'D':
883 ctx->options |= E2F_OPT_COMPRESS_DIRS;
884 break;
885 case 'E':
886 extended_opts = optarg;
887 break;
888 case 'p':
889 case 'a':
890 if (ctx->options & (E2F_OPT_YES|E2F_OPT_NO)) {
891 conflict_opt:
892 fatal_error(ctx,
893 _("Only one of the options -p/-a, -n or -y may be specified."));
894 }
895 ctx->options |= E2F_OPT_PREEN;
896 break;
897 case 'n':
898 if (ctx->options & (E2F_OPT_YES|E2F_OPT_PREEN))
899 goto conflict_opt;
900 ctx->options |= E2F_OPT_NO;
901 break;
902 case 'y':
903 if (ctx->options & (E2F_OPT_PREEN|E2F_OPT_NO))
904 goto conflict_opt;
905 ctx->options |= E2F_OPT_YES;
906 break;
907 case 't':
908 #ifdef RESOURCE_TRACK
909 if (ctx->options & E2F_OPT_TIME)
910 ctx->options |= E2F_OPT_TIME2;
911 else
912 ctx->options |= E2F_OPT_TIME;
913 #else
914 fprintf(stderr, _("The -t option is not "
915 "supported on this version of e2fsck.\n"));
916 #endif
917 break;
918 case 'c':
919 if (cflag++)
920 ctx->options |= E2F_OPT_WRITECHECK;
921 ctx->options |= E2F_OPT_CHECKBLOCKS;
922 break;
923 case 'r':
924 /* What we do by default, anyway! */
925 break;
926 case 'b':
927 res = sscanf(optarg, "%llu", &blk);
928 ctx->use_superblock = blk;
929 if (res != 1)
930 goto sscanf_err;
931 ctx->flags |= E2F_FLAG_SB_SPECIFIED;
932 break;
933 case 'B':
934 ctx->blocksize = atoi(optarg);
935 break;
936 case 'I':
937 res = sscanf(optarg, "%d", &ctx->inode_buffer_blocks);
938 if (res != 1)
939 goto sscanf_err;
940 break;
941 case 'j':
942 ctx->journal_name = blkid_get_devname(ctx->blkid,
943 optarg, NULL);
944 if (!ctx->journal_name) {
945 com_err(ctx->program_name, 0,
946 _("Unable to resolve '%s'"),
947 optarg);
948 fatal_error(ctx, 0);
949 }
950 break;
951 case 'P':
952 res = sscanf(optarg, "%d", &ctx->process_inode_size);
953 if (res != 1)
954 goto sscanf_err;
955 break;
956 case 'L':
957 replace_bad_blocks++;
958 /* fall through */
959 case 'l':
960 if (bad_blocks_file)
961 free(bad_blocks_file);
962 bad_blocks_file = string_copy(ctx, optarg, 0);
963 break;
964 case 'd':
965 ctx->options |= E2F_OPT_DEBUG;
966 break;
967 case 'f':
968 ctx->options |= E2F_OPT_FORCE;
969 break;
970 case 'F':
971 flush = 1;
972 break;
973 case 'v':
974 verbose = 1;
975 break;
976 case 'V':
977 show_version_only = 1;
978 break;
979 #ifdef MTRACE
980 case 'M':
981 mallwatch = (void *) strtol(optarg, NULL, 0);
982 break;
983 #endif
984 case 'N':
985 ctx->device_name = string_copy(ctx, optarg, 0);
986 break;
987 case 'k':
988 keep_bad_blocks++;
989 break;
990 case 'z':
991 ctx->undo_file = optarg;
992 break;
993 default:
994 usage(ctx);
995 }
996 if (show_version_only)
997 return 0;
998 if (optind != argc - 1)
999 usage(ctx);
1000 if ((ctx->options & E2F_OPT_NO) &&
1001 (ctx->options & E2F_OPT_COMPRESS_DIRS)) {
1002 com_err(ctx->program_name, 0, "%s",
1003 _("The -n and -D options are incompatible."));
1004 fatal_error(ctx, 0);
1005 }
1006 if ((ctx->options & E2F_OPT_NO) && cflag) {
1007 com_err(ctx->program_name, 0, "%s",
1008 _("The -n and -c options are incompatible."));
1009 fatal_error(ctx, 0);
1010 }
1011 if ((ctx->options & E2F_OPT_NO) && bad_blocks_file) {
1012 com_err(ctx->program_name, 0, "%s",
1013 _("The -n and -l/-L options are incompatible."));
1014 fatal_error(ctx, 0);
1015 }
1016 if (ctx->options & E2F_OPT_NO)
1017 ctx->options |= E2F_OPT_READONLY;
1018
1019 ctx->io_options = strchr(argv[optind], '?');
1020 if (ctx->io_options)
1021 *ctx->io_options++ = 0;
1022 ctx->filesystem_name = blkid_get_devname(ctx->blkid, argv[optind], 0);
1023 if (!ctx->filesystem_name) {
1024 com_err(ctx->program_name, 0, _("Unable to resolve '%s'"),
1025 argv[optind]);
1026 fatal_error(ctx, 0);
1027 }
1028 if (extended_opts)
1029 parse_extended_opts(ctx, extended_opts);
1030
1031 /* Complain about mutually exclusive rebuilding activities */
1032 if (getenv("E2FSCK_FIXES_ONLY"))
1033 ctx->options |= E2F_OPT_FIXES_ONLY;
1034 if ((ctx->options & E2F_OPT_COMPRESS_DIRS) &&
1035 (ctx->options & E2F_OPT_FIXES_ONLY)) {
1036 com_err(ctx->program_name, 0, "%s",
1037 _("The -D and -E fixes_only options are incompatible."));
1038 fatal_error(ctx, 0);
1039 }
1040 if ((ctx->options & E2F_OPT_CONVERT_BMAP) &&
1041 (ctx->options & E2F_OPT_FIXES_ONLY)) {
1042 com_err(ctx->program_name, 0, "%s",
1043 _("The -E bmap2extent and fixes_only options are incompatible."));
1044 fatal_error(ctx, 0);
1045 }
1046
1047 if ((cp = getenv("E2FSCK_CONFIG")) != NULL)
1048 config_fn[0] = cp;
1049 profile_set_syntax_err_cb(syntax_err_report);
1050 profile_init(config_fn, &ctx->profile);
1051
1052 profile_get_boolean(ctx->profile, "options", "report_time", 0, 0,
1053 &c);
1054 if (c)
1055 ctx->options |= E2F_OPT_TIME | E2F_OPT_TIME2;
1056 profile_get_boolean(ctx->profile, "options", "report_verbose", 0, 0,
1057 &c);
1058 if (c)
1059 verbose = 1;
1060
1061 profile_get_boolean(ctx->profile, "options", "no_optimize_extents",
1062 0, 0, &c);
1063 if (c)
1064 ctx->options |= E2F_OPT_NOOPT_EXTENTS;
1065
1066 profile_get_boolean(ctx->profile, "options", "inode_count_fullmap",
1067 0, 0, &c);
1068 if (c)
1069 ctx->options |= E2F_OPT_ICOUNT_FULLMAP;
1070
1071 if (ctx->readahead_kb == ~0ULL) {
1072 profile_get_integer(ctx->profile, "options",
1073 "readahead_mem_pct", 0, -1, &c);
1074 if (c >= 0 && c <= 100)
1075 ctx->readahead_kb = phys_mem_kb * c / 100;
1076 profile_get_integer(ctx->profile, "options",
1077 "readahead_kb", 0, -1, &c);
1078 if (c >= 0)
1079 ctx->readahead_kb = c;
1080 if (ctx->readahead_kb != ~0ULL &&
1081 ctx->readahead_kb > phys_mem_kb)
1082 ctx->readahead_kb = phys_mem_kb;
1083 }
1084
1085 /* Turn off discard in read-only mode */
1086 if ((ctx->options & E2F_OPT_NO) &&
1087 (ctx->options & E2F_OPT_DISCARD))
1088 ctx->options &= ~E2F_OPT_DISCARD;
1089
1090 if (flush) {
1091 fd = open(ctx->filesystem_name, O_RDONLY, 0);
1092 if (fd < 0) {
1093 com_err("open", errno,
1094 _("while opening %s for flushing"),
1095 ctx->filesystem_name);
1096 fatal_error(ctx, 0);
1097 }
1098 if ((retval = ext2fs_sync_device(fd, 1))) {
1099 com_err("ext2fs_sync_device", retval,
1100 _("while trying to flush %s"),
1101 ctx->filesystem_name);
1102 fatal_error(ctx, 0);
1103 }
1104 close(fd);
1105 }
1106 if (cflag && bad_blocks_file) {
1107 fprintf(stderr, "%s", _("The -c and the -l/-L options may not "
1108 "be both used at the same time.\n"));
1109 exit(FSCK_USAGE);
1110 }
1111 #ifdef HAVE_SIGNAL_H
1112 /*
1113 * Set up signal action
1114 */
1115 memset(&sa, 0, sizeof(struct sigaction));
1116 sa.sa_handler = signal_cancel;
1117 sigaction(SIGINT, &sa, 0);
1118 sigaction(SIGTERM, &sa, 0);
1119 #ifdef SA_RESTART
1120 sa.sa_flags = SA_RESTART;
1121 #endif
1122 sa.sa_handler = signal_progress_on;
1123 sigaction(SIGUSR1, &sa, 0);
1124 sa.sa_handler = signal_progress_off;
1125 sigaction(SIGUSR2, &sa, 0);
1126 #endif
1127
1128 /* Update our PATH to include /sbin if we need to run badblocks */
1129 if (cflag) {
1130 char *oldpath = getenv("PATH");
1131 char *newpath;
1132 int len = sizeof(PATH_SET) + 1;
1133
1134 if (oldpath)
1135 len += strlen(oldpath);
1136
1137 newpath = malloc(len);
1138 if (!newpath)
1139 fatal_error(ctx, "Couldn't malloc() newpath");
1140 strcpy(newpath, PATH_SET);
1141
1142 if (oldpath) {
1143 strcat(newpath, ":");
1144 strcat(newpath, oldpath);
1145 }
1146 putenv(newpath);
1147 }
1148 #ifdef CONFIG_JBD_DEBUG
1149 jbd_debug = getenv("E2FSCK_JBD_DEBUG");
1150 if (jbd_debug) {
1151 res = sscanf(jbd_debug, "%d", &journal_enable_debug);
1152 if (res != 1) {
1153 fprintf(stderr,
1154 _("E2FSCK_JBD_DEBUG \"%s\" not an integer\n\n"),
1155 jbd_debug);
1156 exit (1);
1157 }
1158 }
1159 #endif
1160 return 0;
1161
1162 sscanf_err:
1163 fprintf(stderr, _("\nInvalid non-numeric argument to -%c (\"%s\")\n\n"),
1164 c, optarg);
1165 exit (1);
1166 }
1167
try_open_fs(e2fsck_t ctx,int flags,io_manager io_ptr,ext2_filsys * ret_fs)1168 static errcode_t try_open_fs(e2fsck_t ctx, int flags, io_manager io_ptr,
1169 ext2_filsys *ret_fs)
1170 {
1171 errcode_t retval;
1172
1173 *ret_fs = NULL;
1174 if (ctx->superblock && ctx->blocksize) {
1175 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
1176 flags, ctx->superblock, ctx->blocksize,
1177 io_ptr, ret_fs);
1178 } else if (ctx->superblock) {
1179 int blocksize;
1180 for (blocksize = EXT2_MIN_BLOCK_SIZE;
1181 blocksize <= EXT2_MAX_BLOCK_SIZE; blocksize *= 2) {
1182 if (*ret_fs) {
1183 ext2fs_free(*ret_fs);
1184 *ret_fs = NULL;
1185 }
1186 retval = ext2fs_open2(ctx->filesystem_name,
1187 ctx->io_options, flags,
1188 ctx->superblock, blocksize,
1189 io_ptr, ret_fs);
1190 if (!retval)
1191 break;
1192 }
1193 } else
1194 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
1195 flags, 0, 0, io_ptr, ret_fs);
1196
1197 if (retval == 0) {
1198 (*ret_fs)->priv_data = ctx;
1199 e2fsck_set_bitmap_type(*ret_fs, EXT2FS_BMAP64_RBTREE,
1200 "default", NULL);
1201 }
1202 return retval;
1203 }
1204
1205 static const char *my_ver_string = E2FSPROGS_VERSION;
1206 static const char *my_ver_date = E2FSPROGS_DATE;
1207
e2fsck_check_mmp(ext2_filsys fs,e2fsck_t ctx)1208 static errcode_t e2fsck_check_mmp(ext2_filsys fs, e2fsck_t ctx)
1209 {
1210 struct mmp_struct *mmp_s;
1211 unsigned int mmp_check_interval;
1212 errcode_t retval = 0;
1213 struct problem_context pctx;
1214 unsigned int wait_time = 0;
1215
1216 clear_problem_context(&pctx);
1217 if (fs->mmp_buf == NULL) {
1218 retval = ext2fs_get_mem(fs->blocksize, &fs->mmp_buf);
1219 if (retval)
1220 goto check_error;
1221 }
1222
1223 retval = ext2fs_mmp_read(fs, fs->super->s_mmp_block, fs->mmp_buf);
1224 if (retval)
1225 goto check_error;
1226
1227 mmp_s = fs->mmp_buf;
1228
1229 mmp_check_interval = fs->super->s_mmp_update_interval;
1230 if (mmp_check_interval < EXT4_MMP_MIN_CHECK_INTERVAL)
1231 mmp_check_interval = EXT4_MMP_MIN_CHECK_INTERVAL;
1232
1233 /*
1234 * If check_interval in MMP block is larger, use that instead of
1235 * check_interval from the superblock.
1236 */
1237 if (mmp_s->mmp_check_interval > mmp_check_interval)
1238 mmp_check_interval = mmp_s->mmp_check_interval;
1239
1240 wait_time = mmp_check_interval * 2 + 1;
1241
1242 if (mmp_s->mmp_seq == EXT4_MMP_SEQ_CLEAN)
1243 retval = 0;
1244 else if (mmp_s->mmp_seq == EXT4_MMP_SEQ_FSCK)
1245 retval = EXT2_ET_MMP_FSCK_ON;
1246 else if (mmp_s->mmp_seq > EXT4_MMP_SEQ_MAX)
1247 retval = EXT2_ET_MMP_UNKNOWN_SEQ;
1248
1249 if (retval)
1250 goto check_error;
1251
1252 /* Print warning if e2fsck will wait for more than 20 secs. */
1253 if (verbose || wait_time > EXT4_MMP_MIN_CHECK_INTERVAL * 4) {
1254 log_out(ctx, _("MMP interval is %u seconds and total wait "
1255 "time is %u seconds. Please wait...\n"),
1256 mmp_check_interval, wait_time * 2);
1257 }
1258
1259 return 0;
1260
1261 check_error:
1262
1263 if (retval == EXT2_ET_MMP_BAD_BLOCK) {
1264 if (fix_problem(ctx, PR_0_MMP_INVALID_BLK, &pctx)) {
1265 fs->super->s_mmp_block = 0;
1266 ext2fs_mark_super_dirty(fs);
1267 retval = 0;
1268 }
1269 } else if (retval == EXT2_ET_MMP_FAILED) {
1270 com_err(ctx->program_name, retval, "%s",
1271 _("while checking MMP block"));
1272 dump_mmp_msg(fs->mmp_buf, NULL);
1273 } else if (retval == EXT2_ET_MMP_FSCK_ON ||
1274 retval == EXT2_ET_MMP_UNKNOWN_SEQ) {
1275 com_err(ctx->program_name, retval, "%s",
1276 _("while checking MMP block"));
1277 dump_mmp_msg(fs->mmp_buf,
1278 _("If you are sure the filesystem is not "
1279 "in use on any node, run:\n"
1280 "'tune2fs -f -E clear_mmp %s'\n"),
1281 ctx->device_name);
1282 } else if (retval == EXT2_ET_MMP_MAGIC_INVALID) {
1283 if (fix_problem(ctx, PR_0_MMP_INVALID_MAGIC, &pctx)) {
1284 ext2fs_mmp_clear(fs);
1285 retval = 0;
1286 }
1287 } else if (retval == EXT2_ET_MMP_CSUM_INVALID) {
1288 if (fix_problem(ctx, PR_0_MMP_CSUM_INVALID, &pctx)) {
1289 ext2fs_mmp_clear(fs);
1290 retval = 0;
1291 }
1292 } else
1293 com_err(ctx->program_name, retval, "%s",
1294 _("while reading MMP block"));
1295 return retval;
1296 }
1297
e2fsck_setup_tdb(e2fsck_t ctx,io_manager * io_ptr)1298 static int e2fsck_setup_tdb(e2fsck_t ctx, io_manager *io_ptr)
1299 {
1300 errcode_t retval = ENOMEM;
1301 char *tdb_dir = NULL, *tdb_file = NULL;
1302 char *dev_name, *tmp_name;
1303 int free_tdb_dir = 0;
1304
1305 /* (re)open a specific undo file */
1306 if (ctx->undo_file && ctx->undo_file[0] != 0) {
1307 retval = set_undo_io_backing_manager(*io_ptr);
1308 if (retval)
1309 goto err;
1310 *io_ptr = undo_io_manager;
1311 retval = set_undo_io_backup_file(ctx->undo_file);
1312 if (retval)
1313 goto err;
1314 printf(_("Overwriting existing filesystem; this can be undone "
1315 "using the command:\n"
1316 " e2undo %s %s\n\n"),
1317 ctx->undo_file, ctx->filesystem_name);
1318 return retval;
1319 }
1320
1321 /*
1322 * Configuration via a conf file would be
1323 * nice
1324 */
1325 tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
1326 if (!tdb_dir) {
1327 profile_get_string(ctx->profile, "defaults",
1328 "undo_dir", 0, "/var/lib/e2fsprogs",
1329 &tdb_dir);
1330 free_tdb_dir = 1;
1331 }
1332
1333 if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
1334 access(tdb_dir, W_OK)) {
1335 if (free_tdb_dir)
1336 free(tdb_dir);
1337 return 0;
1338 }
1339
1340 tmp_name = strdup(ctx->filesystem_name);
1341 if (!tmp_name)
1342 goto errout;
1343 dev_name = basename(tmp_name);
1344 tdb_file = malloc(strlen(tdb_dir) + 8 + strlen(dev_name) + 7 + 1);
1345 if (!tdb_file) {
1346 free(tmp_name);
1347 goto errout;
1348 }
1349 sprintf(tdb_file, "%s/e2fsck-%s.e2undo", tdb_dir, dev_name);
1350 free(tmp_name);
1351
1352 if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
1353 retval = errno;
1354 com_err(ctx->program_name, retval,
1355 _("while trying to delete %s"), tdb_file);
1356 goto errout;
1357 }
1358
1359 retval = set_undo_io_backing_manager(*io_ptr);
1360 if (retval)
1361 goto errout;
1362 *io_ptr = undo_io_manager;
1363 retval = set_undo_io_backup_file(tdb_file);
1364 if (retval)
1365 goto errout;
1366 printf(_("Overwriting existing filesystem; this can be undone "
1367 "using the command:\n"
1368 " e2undo %s %s\n\n"), tdb_file, ctx->filesystem_name);
1369
1370 if (free_tdb_dir)
1371 free(tdb_dir);
1372 free(tdb_file);
1373 return 0;
1374
1375 errout:
1376 if (free_tdb_dir)
1377 free(tdb_dir);
1378 free(tdb_file);
1379 err:
1380 com_err(ctx->program_name, retval, "%s",
1381 _("while trying to setup undo file\n"));
1382 return retval;
1383 }
1384
main(int argc,char * argv[])1385 int main (int argc, char *argv[])
1386 {
1387 errcode_t retval = 0, retval2 = 0, orig_retval = 0;
1388 int exit_value = FSCK_OK;
1389 ext2_filsys fs = 0;
1390 io_manager io_ptr;
1391 struct ext2_super_block *sb;
1392 const char *lib_ver_date;
1393 int my_ver, lib_ver;
1394 e2fsck_t ctx;
1395 blk64_t orig_superblock = ~(blk64_t)0;
1396 struct problem_context pctx;
1397 int flags, run_result, was_changed;
1398 int journal_size;
1399 int sysval, sys_page_size = 4096;
1400 int old_bitmaps;
1401 __u32 features[3];
1402 char *cp;
1403 enum quota_type qtype;
1404 struct ext2fs_journal_params jparams;
1405
1406 clear_problem_context(&pctx);
1407 sigcatcher_setup();
1408 #ifdef MTRACE
1409 mtrace();
1410 #endif
1411 #ifdef MCHECK
1412 mcheck(0);
1413 #endif
1414 #ifdef ENABLE_NLS
1415 setlocale(LC_MESSAGES, "");
1416 setlocale(LC_CTYPE, "");
1417 bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1418 textdomain(NLS_CAT_NAME);
1419 set_com_err_gettext(gettext);
1420 #endif
1421 my_ver = ext2fs_parse_version_string(my_ver_string);
1422 lib_ver = ext2fs_get_library_version(0, &lib_ver_date);
1423 if (my_ver > lib_ver) {
1424 fprintf( stderr, "%s",
1425 _("Error: ext2fs library version out of date!\n"));
1426 show_version_only++;
1427 }
1428
1429 retval = PRS(argc, argv, &ctx);
1430 if (retval) {
1431 com_err("e2fsck", retval, "%s",
1432 _("while trying to initialize program"));
1433 exit(FSCK_ERROR);
1434 }
1435 reserve_stdio_fds();
1436
1437 set_up_logging(ctx);
1438 if (ctx->logf) {
1439 int i;
1440
1441 fputs("E2fsck run: ", ctx->logf);
1442 for (i = 0; i < argc; i++) {
1443 if (i)
1444 fputc(' ', ctx->logf);
1445 fputs(argv[i], ctx->logf);
1446 }
1447 fputc('\n', ctx->logf);
1448 }
1449 if (ctx->problem_logf) {
1450 int i;
1451
1452 fputs("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n",
1453 ctx->problem_logf);
1454 fprintf(ctx->problem_logf, "<problem_log time=\"%lu\">\n",
1455 (unsigned long) ctx->now);
1456 fprintf(ctx->problem_logf, "<invocation prog=\"%s\"",
1457 argv[0]);
1458 for (i = 1; i < argc; i++)
1459 fprintf(ctx->problem_logf, " arg%d=\"%s\"", i, argv[i]);
1460 fputs("/>\n", ctx->problem_logf);
1461 }
1462
1463 init_resource_track(&ctx->global_rtrack, NULL);
1464 if (!(ctx->options & E2F_OPT_PREEN) || show_version_only)
1465 log_err(ctx, "e2fsck %s (%s)\n", my_ver_string,
1466 my_ver_date);
1467
1468 if (show_version_only) {
1469 log_err(ctx, _("\tUsing %s, %s\n"),
1470 error_message(EXT2_ET_BASE), lib_ver_date);
1471 exit(FSCK_OK);
1472 }
1473
1474 check_mount(ctx);
1475
1476 if (!(ctx->options & E2F_OPT_PREEN) &&
1477 !(ctx->options & E2F_OPT_NO) &&
1478 !(ctx->options & E2F_OPT_YES)) {
1479 if (!ctx->interactive)
1480 fatal_error(ctx,
1481 _("need terminal for interactive repairs"));
1482 }
1483 ctx->superblock = ctx->use_superblock;
1484
1485 flags = EXT2_FLAG_SKIP_MMP | EXT2_FLAG_THREADS;
1486 restart:
1487 #ifdef CONFIG_TESTIO_DEBUG
1488 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1489 io_ptr = test_io_manager;
1490 test_io_backing_manager = unix_io_manager;
1491 } else
1492 #endif
1493 io_ptr = unix_io_manager;
1494 flags |= EXT2_FLAG_NOFREE_ON_ERROR;
1495 profile_get_boolean(ctx->profile, "options", "old_bitmaps", 0, 0,
1496 &old_bitmaps);
1497 if (!old_bitmaps)
1498 flags |= EXT2_FLAG_64BITS;
1499 if ((ctx->options & E2F_OPT_READONLY) == 0) {
1500 flags |= EXT2_FLAG_RW;
1501 if (!(ctx->mount_flags & EXT2_MF_ISROOT &&
1502 ctx->mount_flags & EXT2_MF_READONLY))
1503 flags |= EXT2_FLAG_EXCLUSIVE;
1504 if ((ctx->mount_flags & EXT2_MF_READONLY) &&
1505 (ctx->options & E2F_OPT_FORCE))
1506 flags &= ~EXT2_FLAG_EXCLUSIVE;
1507 }
1508
1509 if (ctx->undo_file) {
1510 retval = e2fsck_setup_tdb(ctx, &io_ptr);
1511 if (retval)
1512 exit(FSCK_ERROR);
1513 }
1514
1515 ctx->openfs_flags = flags;
1516 retval = try_open_fs(ctx, flags, io_ptr, &fs);
1517
1518 if (!ctx->superblock && !(ctx->options & E2F_OPT_PREEN) &&
1519 !(ctx->flags & E2F_FLAG_SB_SPECIFIED) &&
1520 ((retval == EXT2_ET_BAD_MAGIC) ||
1521 (retval == EXT2_ET_SB_CSUM_INVALID) ||
1522 (retval == EXT2_ET_CORRUPT_SUPERBLOCK) ||
1523 ((retval == 0) && (retval2 = ext2fs_check_desc(fs))))) {
1524 if (retval) {
1525 pctx.errcode = retval;
1526 fix_problem(ctx, PR_0_OPEN_FAILED, &pctx);
1527 }
1528 if (retval2) {
1529 pctx.errcode = retval2;
1530 fix_problem(ctx, PR_0_CHECK_DESC_FAILED, &pctx);
1531 }
1532 pctx.errcode = 0;
1533 if (retval2 == ENOMEM || retval2 == EXT2_ET_NO_MEMORY) {
1534 retval = retval2;
1535 goto failure;
1536 }
1537 if (fs->flags & EXT2_FLAG_NOFREE_ON_ERROR) {
1538 ext2fs_free(fs);
1539 fs = NULL;
1540 }
1541 if (!fs || (fs->group_desc_count > 1)) {
1542 log_out(ctx, _("%s: %s trying backup blocks...\n"),
1543 ctx->program_name,
1544 retval ? _("Superblock invalid,") :
1545 _("Group descriptors look bad..."));
1546 orig_superblock = ctx->superblock;
1547 get_backup_sb(ctx, fs, ctx->filesystem_name, io_ptr);
1548 if (fs)
1549 ext2fs_close_free(&fs);
1550 orig_retval = retval;
1551 retval = try_open_fs(ctx, flags, io_ptr, &fs);
1552 if ((orig_retval == 0) && retval != 0) {
1553 if (fs)
1554 ext2fs_close_free(&fs);
1555 log_out(ctx, _("%s: %s while using the "
1556 "backup blocks"),
1557 ctx->program_name,
1558 error_message(retval));
1559 log_out(ctx, _("%s: going back to original "
1560 "superblock\n"),
1561 ctx->program_name);
1562 ctx->superblock = orig_superblock;
1563 retval = try_open_fs(ctx, flags, io_ptr, &fs);
1564 }
1565 }
1566 }
1567 if (((retval == EXT2_ET_UNSUPP_FEATURE) ||
1568 (retval == EXT2_ET_RO_UNSUPP_FEATURE)) &&
1569 fs && fs->super) {
1570 sb = fs->super;
1571 features[0] = (sb->s_feature_compat &
1572 ~EXT2_LIB_FEATURE_COMPAT_SUPP);
1573 features[1] = (sb->s_feature_incompat &
1574 ~EXT2_LIB_FEATURE_INCOMPAT_SUPP);
1575 features[2] = (sb->s_feature_ro_compat &
1576 ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
1577 if (features[0] || features[1] || features[2])
1578 goto print_unsupp_features;
1579 }
1580 failure:
1581 if (retval) {
1582 if (orig_retval)
1583 retval = orig_retval;
1584 com_err(ctx->program_name, retval, _("while trying to open %s"),
1585 ctx->filesystem_name);
1586 if (retval == EXT2_ET_REV_TOO_HIGH) {
1587 log_out(ctx, "%s",
1588 _("The filesystem revision is apparently "
1589 "too high for this version of e2fsck.\n"
1590 "(Or the filesystem superblock "
1591 "is corrupt)\n\n"));
1592 fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
1593 } else if (retval == EXT2_ET_SHORT_READ)
1594 log_out(ctx, "%s",
1595 _("Could this be a zero-length partition?\n"));
1596 else if ((retval == EPERM) || (retval == EACCES))
1597 log_out(ctx, _("You must have %s access to the "
1598 "filesystem or be root\n"),
1599 (ctx->options & E2F_OPT_READONLY) ?
1600 "r/o" : "r/w");
1601 else if (retval == ENXIO)
1602 log_out(ctx, "%s",
1603 _("Possibly non-existent or swap device?\n"));
1604 else if (retval == EBUSY)
1605 log_out(ctx, "%s", _("Filesystem mounted or opened "
1606 "exclusively by another program?\n"));
1607 else if (retval == ENOENT)
1608 log_out(ctx, "%s",
1609 _("Possibly non-existent device?\n"));
1610 #ifdef EROFS
1611 else if (retval == EROFS)
1612 log_out(ctx, "%s", _("Disk write-protected; use the "
1613 "-n option to do a read-only\n"
1614 "check of the device.\n"));
1615 #endif
1616 else {
1617 /*
1618 * Let's try once more will less consistency checking
1619 * so that we are able to recover from more errors
1620 * (e.g. some tool messing up some value in the sb).
1621 */
1622 if ((retval == EXT2_ET_CORRUPT_SUPERBLOCK) &&
1623 !(flags & EXT2_FLAG_IGNORE_SB_ERRORS)) {
1624 if (fs)
1625 ext2fs_close_free(&fs);
1626 log_out(ctx, _("%s: Trying to load superblock "
1627 "despite errors...\n"),
1628 ctx->program_name);
1629 flags |= EXT2_FLAG_IGNORE_SB_ERRORS;
1630 /*
1631 * If we tried backup sb, revert to the
1632 * original one now.
1633 */
1634 if (orig_superblock != ~(blk64_t)0)
1635 ctx->superblock = orig_superblock;
1636 goto restart;
1637 }
1638 fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
1639 if (retval == EXT2_ET_BAD_MAGIC)
1640 check_plausibility(ctx->filesystem_name,
1641 CHECK_FS_EXIST, NULL);
1642 }
1643 fatal_error(ctx, 0);
1644 }
1645 /*
1646 * We only update the master superblock because (a) paranoia;
1647 * we don't want to corrupt the backup superblocks, and (b) we
1648 * don't need to update the mount count and last checked
1649 * fields in the backup superblock (the kernel doesn't update
1650 * the backup superblocks anyway). With newer versions of the
1651 * library this flag is set by ext2fs_open2(), but we set this
1652 * here just to be sure. (No, we don't support e2fsck running
1653 * with some other libext2fs than the one that it was shipped
1654 * with, but just in case....)
1655 */
1656 fs->flags |= EXT2_FLAG_MASTER_SB_ONLY;
1657
1658 if (!(ctx->flags & E2F_FLAG_GOT_DEVSIZE)) {
1659 __u32 blocksize = EXT2_BLOCK_SIZE(fs->super);
1660 int need_restart = 0;
1661
1662 pctx.errcode = ext2fs_get_device_size2(ctx->filesystem_name,
1663 blocksize,
1664 &ctx->num_blocks);
1665 /*
1666 * The floppy driver refuses to allow anyone else to
1667 * open the device if has been opened with O_EXCL;
1668 * this is unlike other block device drivers in Linux.
1669 * To handle this, we close the filesystem and then
1670 * reopen the filesystem after we get the device size.
1671 */
1672 if (pctx.errcode == EBUSY) {
1673 ext2fs_close_free(&fs);
1674 need_restart++;
1675 pctx.errcode =
1676 ext2fs_get_device_size2(ctx->filesystem_name,
1677 blocksize,
1678 &ctx->num_blocks);
1679 }
1680 if (pctx.errcode == EXT2_ET_UNIMPLEMENTED)
1681 ctx->num_blocks = 0;
1682 else if (pctx.errcode) {
1683 fix_problem(ctx, PR_0_GETSIZE_ERROR, &pctx);
1684 ctx->flags |= E2F_FLAG_ABORT;
1685 fatal_error(ctx, 0);
1686 }
1687 ctx->flags |= E2F_FLAG_GOT_DEVSIZE;
1688 if (need_restart)
1689 goto restart;
1690 }
1691
1692 ctx->fs = fs;
1693 fs->now = ctx->now;
1694 sb = fs->super;
1695
1696 if (sb->s_rev_level > E2FSCK_CURRENT_REV) {
1697 com_err(ctx->program_name, EXT2_ET_REV_TOO_HIGH,
1698 _("while trying to open %s"),
1699 ctx->filesystem_name);
1700 get_newer:
1701 fatal_error(ctx, _("Get a newer version of e2fsck!"));
1702 }
1703
1704 /*
1705 * Set the device name, which is used whenever we print error
1706 * or informational messages to the user.
1707 */
1708 if (ctx->device_name == 0 && sb->s_volume_name[0])
1709 ctx->device_name = string_copy(ctx, (char *) sb->s_volume_name,
1710 sizeof(sb->s_volume_name));
1711
1712 if (ctx->device_name == 0)
1713 ctx->device_name = string_copy(ctx, ctx->filesystem_name, 0);
1714 for (cp = ctx->device_name; *cp; cp++)
1715 if (isspace(*cp) || *cp == ':')
1716 *cp = '_';
1717
1718 if (ctx->problem_logf) {
1719
1720 fprintf(ctx->problem_logf, "<filesystem dev=\"%s\"",
1721 ctx->filesystem_name);
1722 if (!uuid_is_null(sb->s_uuid)) {
1723 char buf[48];
1724
1725 uuid_unparse(sb->s_uuid, buf);
1726 fprintf(ctx->problem_logf, " uuid=\"%s\"", buf);
1727 }
1728 if (sb->s_volume_name[0])
1729 fprintf(ctx->problem_logf, " label=\"%.*s\"",
1730 EXT2_LEN_STR(sb->s_volume_name));
1731
1732 fputs("/>\n", ctx->problem_logf);
1733 }
1734
1735 ehandler_init(fs->io);
1736
1737 if (ext2fs_has_feature_mmp(fs->super) &&
1738 (flags & EXT2_FLAG_SKIP_MMP)) {
1739 if (e2fsck_check_mmp(fs, ctx))
1740 fatal_error(ctx, 0);
1741
1742 /*
1743 * Restart in order to reopen fs but this time start mmp.
1744 */
1745 ext2fs_close_free(&ctx->fs);
1746 flags &= ~EXT2_FLAG_SKIP_MMP;
1747 goto restart;
1748 }
1749
1750 if (ctx->logf)
1751 fprintf(ctx->logf, "Filesystem UUID: %s\n",
1752 e2p_uuid2str(sb->s_uuid));
1753
1754 /*
1755 * Make sure the ext3 superblock fields are consistent.
1756 */
1757 if ((ctx->mount_flags & (EXT2_MF_MOUNTED | EXT2_MF_BUSY)) == 0) {
1758 retval = e2fsck_check_ext3_journal(ctx);
1759 if (retval) {
1760 com_err(ctx->program_name, retval,
1761 _("while checking journal for %s"),
1762 ctx->device_name);
1763 fatal_error(ctx,
1764 _("Cannot proceed with file system check"));
1765 }
1766 }
1767
1768 /*
1769 * Check to see if we need to do ext3-style recovery. If so,
1770 * do it, and then restart the fsck.
1771 */
1772 if (ext2fs_has_feature_journal_needs_recovery(sb)) {
1773 if (ctx->options & E2F_OPT_READONLY) {
1774 log_out(ctx, "%s",
1775 _("Warning: skipping journal recovery because "
1776 "doing a read-only filesystem check.\n"));
1777 io_channel_flush(ctx->fs->io);
1778 } else {
1779 if (ctx->flags & E2F_FLAG_RESTARTED) {
1780 /*
1781 * Whoops, we attempted to run the
1782 * journal twice. This should never
1783 * happen, unless the hardware or
1784 * device driver is being bogus.
1785 */
1786 com_err(ctx->program_name, 0,
1787 _("unable to set superblock flags "
1788 "on %s\n"), ctx->device_name);
1789 fatal_error(ctx, 0);
1790 }
1791 retval = e2fsck_run_ext3_journal(ctx);
1792 if (retval == EFSBADCRC) {
1793 log_out(ctx, _("Journal checksum error "
1794 "found in %s\n"),
1795 ctx->device_name);
1796 } else if (retval == EFSCORRUPTED) {
1797 log_out(ctx, _("Journal corrupted in %s\n"),
1798 ctx->device_name);
1799 } else if (retval) {
1800 com_err(ctx->program_name, retval,
1801 _("while recovering journal of %s"),
1802 ctx->device_name);
1803 }
1804 ext2fs_close_free(&ctx->fs);
1805 ctx->flags |= E2F_FLAG_RESTARTED;
1806 goto restart;
1807 }
1808 }
1809
1810 /*
1811 * Check for compatibility with the feature sets. We need to
1812 * be more stringent than ext2fs_open().
1813 */
1814 features[0] = sb->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP;
1815 features[1] = sb->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP;
1816 features[2] = (sb->s_feature_ro_compat &
1817 ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
1818 print_unsupp_features:
1819 if (features[0] || features[1] || features[2]) {
1820 int i, j;
1821 __u32 *mask = features, m;
1822
1823 log_err(ctx, _("%s has unsupported feature(s):"),
1824 ctx->filesystem_name);
1825
1826 for (i=0; i <3; i++,mask++) {
1827 for (j=0,m=1; j < 32; j++, m<<=1) {
1828 if (*mask & m)
1829 log_err(ctx, " %s",
1830 e2p_feature2string(i, m));
1831 }
1832 }
1833 log_err(ctx, "\n");
1834 goto get_newer;
1835 }
1836
1837 if (ext2fs_has_feature_casefold(sb) && !fs->encoding) {
1838 log_err(ctx, _("%s has unsupported encoding: %0x\n"),
1839 ctx->filesystem_name, sb->s_encoding);
1840 goto get_newer;
1841 }
1842
1843 /*
1844 * If the user specified a specific superblock, presumably the
1845 * master superblock has been trashed. So we mark the
1846 * superblock as dirty, so it can be written out.
1847 */
1848 if (ctx->superblock &&
1849 !(ctx->options & E2F_OPT_READONLY))
1850 ext2fs_mark_super_dirty(fs);
1851
1852 /*
1853 * Calculate the number of filesystem blocks per pagesize. If
1854 * fs->blocksize > page_size, set the number of blocks per
1855 * pagesize to 1 to avoid division by zero errors.
1856 */
1857 #ifdef _SC_PAGESIZE
1858 sysval = sysconf(_SC_PAGESIZE);
1859 if (sysval > 0)
1860 sys_page_size = sysval;
1861 #endif /* _SC_PAGESIZE */
1862 ctx->blocks_per_page = sys_page_size / fs->blocksize;
1863 if (ctx->blocks_per_page == 0)
1864 ctx->blocks_per_page = 1;
1865
1866 if (ctx->superblock)
1867 set_latch_flags(PR_LATCH_RELOC, PRL_LATCHED, 0);
1868 ext2fs_mark_valid(fs);
1869 check_super_block(ctx);
1870 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1871 fatal_error(ctx, 0);
1872 check_if_skip(ctx);
1873 check_resize_inode(ctx);
1874 if (bad_blocks_file)
1875 read_bad_blocks_file(ctx, bad_blocks_file, replace_bad_blocks);
1876 else if (cflag)
1877 read_bad_blocks_file(ctx, 0, !keep_bad_blocks); /* Test disk */
1878 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1879 fatal_error(ctx, 0);
1880
1881 /*
1882 * Mark the system as valid, 'til proven otherwise
1883 */
1884 ext2fs_mark_valid(fs);
1885
1886 retval = ext2fs_read_bb_inode(fs, &fs->badblocks);
1887 if (retval) {
1888 log_out(ctx, _("%s: %s while reading bad blocks inode\n"),
1889 ctx->program_name, error_message(retval));
1890 preenhalt(ctx);
1891 log_out(ctx, "%s", _("This doesn't bode well, "
1892 "but we'll try to go on...\n"));
1893 }
1894
1895 /*
1896 * Save the journal size in megabytes.
1897 * Try and use the journal size from the backup else let e2fsck
1898 * find the default journal size. If fast commit feature is enabled,
1899 * it is not clear how many of the journal blocks were fast commit
1900 * blocks. So, ignore the size of journal found in backup.
1901 *
1902 * TODO: Add a new backup type that captures fast commit info as
1903 * well.
1904 */
1905 if (sb->s_jnl_backup_type == EXT3_JNL_BACKUP_BLOCKS &&
1906 !ext2fs_has_feature_fast_commit(sb))
1907 journal_size = (sb->s_jnl_blocks[15] << (32 - 20)) |
1908 (sb->s_jnl_blocks[16] >> 20);
1909 else
1910 journal_size = -1;
1911
1912 if (ext2fs_has_feature_quota(sb)) {
1913 /* Quotas were enabled. Do quota accounting during fsck. */
1914 clear_problem_context(&pctx);
1915 pctx.errcode = quota_init_context(&ctx->qctx, ctx->fs, 0);
1916 if (pctx.errcode) {
1917 fix_problem(ctx, PR_0_QUOTA_INIT_CTX, &pctx);
1918 fatal_error(ctx, 0);
1919 }
1920 }
1921
1922 run_result = e2fsck_run(ctx);
1923 e2fsck_clear_progbar(ctx);
1924
1925 if (!ctx->invalid_bitmaps &&
1926 (ctx->flags & E2F_FLAG_JOURNAL_INODE)) {
1927 if (fix_problem(ctx, PR_6_RECREATE_JOURNAL, &pctx)) {
1928 if (journal_size < 1024) {
1929 ext2fs_get_journal_params(&jparams, fs);
1930 } else {
1931 jparams.num_journal_blocks = journal_size;
1932 jparams.num_fc_blocks = 0;
1933 }
1934 log_out(ctx, _("Creating journal (%d blocks): "),
1935 jparams.num_journal_blocks);
1936 fflush(stdout);
1937 retval = ext2fs_add_journal_inode3(fs, &jparams, ~0ULL, 0);
1938 if (retval) {
1939 log_out(ctx, "%s: while trying to create "
1940 "journal\n", error_message(retval));
1941 goto no_journal;
1942 }
1943 log_out(ctx, "%s", _(" Done.\n"));
1944 log_out(ctx, "%s",
1945 _("\n*** journal has been regenerated ***\n"));
1946 }
1947 }
1948 no_journal:
1949
1950 if (run_result & E2F_FLAG_ABORT) {
1951 fatal_error(ctx, _("aborted"));
1952 } else if (run_result & E2F_FLAG_CANCEL) {
1953 log_out(ctx, _("%s: e2fsck canceled.\n"), ctx->device_name ?
1954 ctx->device_name : ctx->filesystem_name);
1955 exit_value |= FSCK_CANCELED;
1956 } else if (ctx->qctx && !ctx->invalid_bitmaps) {
1957 int needs_writeout;
1958
1959 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1960 if (*quota_sb_inump(sb, qtype) == 0)
1961 continue;
1962 needs_writeout = 0;
1963 pctx.num = qtype;
1964 retval = quota_compare_and_update(ctx->qctx, qtype,
1965 &needs_writeout);
1966 if ((retval || needs_writeout) &&
1967 fix_problem(ctx, PR_6_UPDATE_QUOTAS, &pctx)) {
1968 pctx.errcode = quota_write_inode(ctx->qctx,
1969 1 << qtype);
1970 if (pctx.errcode)
1971 (void) fix_problem(ctx,
1972 PR_6_WRITE_QUOTAS, &pctx);
1973 }
1974 }
1975 quota_release_context(&ctx->qctx);
1976 }
1977
1978 if (run_result == E2F_FLAG_RESTART) {
1979 log_out(ctx, "%s",
1980 _("Restarting e2fsck from the beginning...\n"));
1981 retval = e2fsck_reset_context(ctx);
1982 if (retval) {
1983 com_err(ctx->program_name, retval, "%s",
1984 _("while resetting context"));
1985 fatal_error(ctx, 0);
1986 }
1987 ext2fs_close_free(&ctx->fs);
1988 goto restart;
1989 }
1990
1991 #ifdef MTRACE
1992 mtrace_print("Cleanup");
1993 #endif
1994 was_changed = ext2fs_test_changed(fs);
1995 if (!(ctx->flags & E2F_FLAG_RUN_RETURN) &&
1996 !(ctx->options & E2F_OPT_READONLY)) {
1997 if (ext2fs_test_valid(fs)) {
1998 if (!(sb->s_state & EXT2_VALID_FS))
1999 exit_value |= FSCK_NONDESTRUCT;
2000 sb->s_state = EXT2_VALID_FS;
2001 if (check_backup_super_block(ctx))
2002 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
2003 } else
2004 sb->s_state &= ~EXT2_VALID_FS;
2005 if (!(ctx->flags & E2F_FLAG_TIME_INSANE))
2006 sb->s_lastcheck = ctx->now;
2007 sb->s_mnt_count = 0;
2008 memset(((char *) sb) + EXT4_S_ERR_START, 0, EXT4_S_ERR_LEN);
2009 pctx.errcode = ext2fs_set_gdt_csum(ctx->fs);
2010 if (pctx.errcode)
2011 fix_problem(ctx, PR_6_SET_BG_CHECKSUM, &pctx);
2012 ext2fs_mark_super_dirty(fs);
2013 }
2014
2015 if (ext2fs_has_feature_shared_blocks(ctx->fs->super) &&
2016 (ctx->options & E2F_OPT_UNSHARE_BLOCKS) &&
2017 (ctx->options & E2F_OPT_NO))
2018 /* Don't try to write or flush I/O, we just wanted to know whether or
2019 * not there were enough free blocks to undo deduplication.
2020 */
2021 goto skip_write;
2022
2023 if (!(ctx->options & E2F_OPT_READONLY)) {
2024 e2fsck_write_bitmaps(ctx);
2025 if (fs->flags & EXT2_FLAG_DIRTY) {
2026 pctx.errcode = ext2fs_flush(ctx->fs);
2027 if (pctx.errcode)
2028 fix_problem(ctx, PR_6_FLUSH_FILESYSTEM, &pctx);
2029 }
2030 pctx.errcode = io_channel_flush(ctx->fs->io);
2031 if (pctx.errcode)
2032 fix_problem(ctx, PR_6_IO_FLUSH, &pctx);
2033 }
2034
2035 if (was_changed) {
2036 int fs_fixed = (ctx->flags & E2F_FLAG_PROBLEMS_FIXED);
2037
2038 if (fs_fixed)
2039 exit_value |= FSCK_NONDESTRUCT;
2040 if (!(ctx->options & E2F_OPT_PREEN)) {
2041 #if 0 /* Do this later; it breaks too many tests' golden outputs */
2042 log_out(ctx, fs_fixed ?
2043 _("\n%s: ***** FILE SYSTEM ERRORS "
2044 "CORRECTED *****\n") :
2045 _("%s: File system was modified.\n"),
2046 ctx->device_name);
2047 #else
2048 log_out(ctx,
2049 _("\n%s: ***** FILE SYSTEM WAS MODIFIED *****\n"),
2050 ctx->device_name);
2051 #endif
2052 }
2053 if (ctx->mount_flags & EXT2_MF_ISROOT) {
2054 log_out(ctx, _("%s: ***** REBOOT SYSTEM *****\n"),
2055 ctx->device_name);
2056 exit_value |= FSCK_REBOOT;
2057 }
2058 }
2059
2060 skip_write:
2061 if (!ext2fs_test_valid(fs) ||
2062 ((exit_value & FSCK_CANCELED) &&
2063 (sb->s_state & EXT2_ERROR_FS))) {
2064 log_out(ctx, _("\n%s: ********** WARNING: Filesystem still has "
2065 "errors **********\n\n"), ctx->device_name);
2066 exit_value |= FSCK_UNCORRECTED;
2067 exit_value &= ~FSCK_NONDESTRUCT;
2068 }
2069 if (exit_value & FSCK_CANCELED) {
2070 int allow_cancellation;
2071
2072 profile_get_boolean(ctx->profile, "options",
2073 "allow_cancellation", 0, 0,
2074 &allow_cancellation);
2075 exit_value &= ~FSCK_NONDESTRUCT;
2076 if (allow_cancellation && ext2fs_test_valid(fs) &&
2077 (sb->s_state & EXT2_VALID_FS) &&
2078 !(sb->s_state & EXT2_ERROR_FS))
2079 exit_value = 0;
2080 } else
2081 show_stats(ctx);
2082
2083 print_resource_track(ctx, NULL, &ctx->global_rtrack, ctx->fs->io);
2084
2085 ext2fs_close_free(&ctx->fs);
2086 free(ctx->journal_name);
2087
2088 if (ctx->logf)
2089 fprintf(ctx->logf, "Exit status: %d\n", exit_value);
2090 e2fsck_free_context(ctx);
2091 remove_error_table(&et_ext2_error_table);
2092 remove_error_table(&et_prof_error_table);
2093 return exit_value;
2094 }
2095