2 * unix.c - The unix-specific code for e2fsck
4 * Copyright (C) 1993, 1994, 1995, 1996, 1997 Theodore Ts'o.
7 * This file may be redistributed under the terms of the GNU Public
12 #define _XOPEN_SOURCE 600 /* for inclusion of sa_handler in Solaris */
38 #ifdef HAVE_SYS_IOCTL_H
39 #include <sys/ioctl.h>
44 #ifdef HAVE_SYS_TYPES_H
45 #include <sys/types.h>
52 #include "et/com_err.h"
56 #include "../version.h"
58 /* Command line options */
59 static int cflag; /* check disk */
60 static int show_version_only;
63 static int replace_bad_blocks;
64 static int keep_bad_blocks;
65 static char *bad_blocks_file;
67 e2fsck_t e2fsck_global_ctx; /* Try your very best not to use this! */
69 #ifdef CONFIG_JBD_DEBUG /* Enabled by configure --enable-jfs-debug */
70 int journal_enable_debug = -1;
73 static void usage(e2fsck_t ctx)
76 _("Usage: %s [-panyrcdfvtDFV] [-b superblock] [-B blocksize]\n"
77 "\t\t[-I inode_buffer_blocks] [-P process_inode_size]\n"
78 "\t\t[-l|-L bad_blocks_file] [-C fd] [-j external_journal]\n"
79 "\t\t[-E extended-options] device\n"),
82 fprintf(stderr, _("\nEmergency help:\n"
83 " -p Automatic repair (no questions)\n"
84 " -n Make no changes to the filesystem\n"
85 " -y Assume \"yes\" to all questions\n"
86 " -c Check for bad blocks and add them to the badblock list\n"
87 " -f Force checking even if filesystem is marked clean\n"));
90 " -b superblock Use alternative superblock\n"
91 " -B blocksize Force blocksize when looking for superblock\n"
92 " -j external_journal Set location of the external journal\n"
93 " -l bad_blocks_file Add to badblocks list\n"
94 " -L bad_blocks_file Set badblocks list\n"
100 static void show_stats(e2fsck_t ctx)
102 ext2_filsys fs = ctx->fs;
103 ext2_ino_t inodes, inodes_used;
104 blk64_t blocks, blocks_used;
105 unsigned int dir_links;
106 unsigned int num_files, num_links;
107 int frag_percent_file, frag_percent_dir, frag_percent_total;
110 dir_links = 2 * ctx->fs_directory_count - 1;
111 num_files = ctx->fs_total_count - dir_links;
112 num_links = ctx->fs_links_count - dir_links;
113 inodes = fs->super->s_inodes_count;
114 inodes_used = (fs->super->s_inodes_count -
115 fs->super->s_free_inodes_count);
116 blocks = ext2fs_blocks_count(fs->super);
117 blocks_used = (ext2fs_blocks_count(fs->super) -
118 ext2fs_free_blocks_count(fs->super));
120 frag_percent_file = (10000 * ctx->fs_fragmented) / inodes_used;
121 frag_percent_file = (frag_percent_file + 5) / 10;
123 frag_percent_dir = (10000 * ctx->fs_fragmented_dir) / inodes_used;
124 frag_percent_dir = (frag_percent_dir + 5) / 10;
126 frag_percent_total = ((10000 * (ctx->fs_fragmented +
127 ctx->fs_fragmented_dir))
129 frag_percent_total = (frag_percent_total + 5) / 10;
132 printf(_("%s: %u/%u files (%0d.%d%% non-contiguous), %llu/%llu blocks\n"),
133 ctx->device_name, inodes_used, inodes,
134 frag_percent_total / 10, frag_percent_total % 10,
135 blocks_used, blocks);
138 printf (P_("\n%8u inode used (%2.2f%%)\n", "\n%8u inodes used (%2.2f%%)\n",
139 inodes_used), inodes_used, 100.0 * inodes_used / inodes);
140 printf (P_("%8u non-contiguous file (%0d.%d%%)\n",
141 "%8u non-contiguous files (%0d.%d%%)\n",
143 ctx->fs_fragmented, frag_percent_file / 10,
144 frag_percent_file % 10);
145 printf (P_("%8u non-contiguous directory (%0d.%d%%)\n",
146 "%8u non-contiguous directories (%0d.%d%%)\n",
147 ctx->fs_fragmented_dir),
148 ctx->fs_fragmented_dir, frag_percent_dir / 10,
149 frag_percent_dir % 10);
150 printf (_(" # of inodes with ind/dind/tind blocks: %u/%u/%u\n"),
151 ctx->fs_ind_count, ctx->fs_dind_count, ctx->fs_tind_count);
153 for (j=MAX_EXTENT_DEPTH_COUNT-1; j >=0; j--)
154 if (ctx->extent_depth_count[j])
157 printf (_(" Extent depth histogram: "));
158 for (i=0; i < j; i++) {
161 printf("%u", ctx->extent_depth_count[i]);
166 printf (P_("%8llu block used (%2.2f%%)\n",
167 "%8llu blocks used (%2.2f%%)\n",
168 blocks_used), blocks_used, 100.0 * blocks_used / blocks);
169 printf (P_("%8u bad block\n", "%8u bad blocks\n",
170 ctx->fs_badblocks_count), ctx->fs_badblocks_count);
171 printf (P_("%8u large file\n", "%8u large files\n",
172 ctx->large_files), ctx->large_files);
173 printf (P_("\n%8u regular file\n", "\n%8u regular files\n",
174 ctx->fs_regular_count), ctx->fs_regular_count);
175 printf (P_("%8u directory\n", "%8u directories\n",
176 ctx->fs_directory_count), ctx->fs_directory_count);
177 printf (P_("%8u character device file\n",
178 "%8u character device files\n", ctx->fs_chardev_count),
179 ctx->fs_chardev_count);
180 printf (P_("%8u block device file\n", "%8u block device files\n",
181 ctx->fs_blockdev_count), ctx->fs_blockdev_count);
182 printf (P_("%8u fifo\n", "%8u fifos\n", ctx->fs_fifo_count),
184 printf (P_("%8u link\n", "%8u links\n",
185 ctx->fs_links_count - dir_links),
186 ctx->fs_links_count - dir_links);
187 printf (P_("%8u symbolic link", "%8u symbolic links",
188 ctx->fs_symlinks_count), ctx->fs_symlinks_count);
189 printf (P_(" (%u fast symbolic link)\n", " (%u fast symbolic links)\n",
190 ctx->fs_fast_symlinks_count), ctx->fs_fast_symlinks_count);
191 printf (P_("%8u socket\n", "%8u sockets\n", ctx->fs_sockets_count),
192 ctx->fs_sockets_count);
193 printf ("--------\n");
194 printf (P_("%8u file\n", "%8u files\n",
195 ctx->fs_total_count - dir_links),
196 ctx->fs_total_count - dir_links);
199 static void check_mount(e2fsck_t ctx)
204 retval = ext2fs_check_if_mounted(ctx->filesystem_name,
207 com_err("ext2fs_check_if_mount", retval,
208 _("while determining whether %s is mounted."),
209 ctx->filesystem_name);
214 * If the filesystem isn't mounted, or it's the root
215 * filesystem and it's mounted read-only, and we're not doing
216 * a read/write check, then everything's fine.
218 if ((!(ctx->mount_flags & EXT2_MF_MOUNTED)) ||
219 ((ctx->mount_flags & EXT2_MF_ISROOT) &&
220 (ctx->mount_flags & EXT2_MF_READONLY) &&
221 !(ctx->options & E2F_OPT_WRITECHECK)))
224 if ((ctx->options & E2F_OPT_READONLY) &&
225 !(ctx->options & E2F_OPT_WRITECHECK)) {
226 printf(_("Warning! %s is mounted.\n"), ctx->filesystem_name);
230 printf(_("%s is mounted. "), ctx->filesystem_name);
231 if (!ctx->interactive)
232 fatal_error(ctx, _("Cannot continue, aborting.\n\n"));
233 printf(_("\n\n\007\007\007\007WARNING!!! "
234 "The filesystem is mounted. If you continue you ***WILL***\n"
235 "cause ***SEVERE*** filesystem damage.\007\007\007\n\n"));
236 cont = ask_yn(_("Do you really want to continue"), 0);
238 printf (_("check aborted.\n"));
244 static int is_on_batt(void)
248 char tmp[80], tmp2[80], fname[80];
252 f = fopen("/proc/apm", "r");
254 if (fscanf(f, "%s %s %s %x", tmp, tmp, tmp, &acflag) != 4)
257 return (acflag != 1);
259 d = opendir("/proc/acpi/ac_adapter");
261 while ((de=readdir(d)) != NULL) {
262 if (!strncmp(".", de->d_name, 1))
264 snprintf(fname, 80, "/proc/acpi/ac_adapter/%s/state",
266 f = fopen(fname, "r");
269 if (fscanf(f, "%s %s", tmp2, tmp) != 2)
272 if (strncmp(tmp, "off-line", 8) == 0) {
283 * This routine checks to see if a filesystem can be skipped; if so,
284 * it will exit with E2FSCK_OK. Under some conditions it will print a
285 * message explaining why a check is being forced.
287 static void check_if_skip(e2fsck_t ctx)
289 ext2_filsys fs = ctx->fs;
290 struct problem_context pctx;
291 const char *reason = NULL;
292 unsigned int reason_arg = 0;
294 int batt = is_on_batt();
295 int defer_check_on_battery;
296 int broken_system_clock;
299 profile_get_boolean(ctx->profile, "options", "broken_system_clock",
300 0, 0, &broken_system_clock);
301 if (ctx->flags & E2F_FLAG_TIME_INSANE)
302 broken_system_clock = 1;
303 profile_get_boolean(ctx->profile, "options",
304 "defer_check_on_battery", 0, 1,
305 &defer_check_on_battery);
306 if (!defer_check_on_battery)
309 if ((ctx->options & E2F_OPT_FORCE) || bad_blocks_file || cflag)
312 if (ctx->options & E2F_OPT_JOURNAL_ONLY)
315 lastcheck = fs->super->s_lastcheck;
316 if (lastcheck > ctx->now)
317 lastcheck -= ctx->time_fudge;
318 if ((fs->super->s_state & EXT2_ERROR_FS) ||
319 !ext2fs_test_valid(fs))
320 reason = _(" contains a file system with errors");
321 else if ((fs->super->s_state & EXT2_VALID_FS) == 0)
322 reason = _(" was not cleanly unmounted");
323 else if (check_backup_super_block(ctx))
324 reason = _(" primary superblock features different from backup");
325 else if ((fs->super->s_max_mnt_count > 0) &&
326 (fs->super->s_mnt_count >=
327 (unsigned) fs->super->s_max_mnt_count)) {
328 reason = _(" has been mounted %u times without being checked");
329 reason_arg = fs->super->s_mnt_count;
330 if (batt && (fs->super->s_mnt_count <
331 (unsigned) fs->super->s_max_mnt_count*2))
333 } else if (!broken_system_clock && fs->super->s_checkinterval &&
334 (ctx->now < lastcheck)) {
335 reason = _(" has filesystem last checked time in the future");
338 } else if (!broken_system_clock && fs->super->s_checkinterval &&
339 ((ctx->now - lastcheck) >=
340 ((time_t) fs->super->s_checkinterval))) {
341 reason = _(" has gone %u days without being checked");
342 reason_arg = (ctx->now - fs->super->s_lastcheck)/(3600*24);
343 if (batt && ((ctx->now - fs->super->s_lastcheck) <
344 fs->super->s_checkinterval*2))
348 fputs(ctx->device_name, stdout);
349 printf(reason, reason_arg);
350 fputs(_(", check forced.\n"), stdout);
355 * Update the global counts from the block group counts. This
356 * is needed since modern kernels don't update the global
357 * counts so as to avoid locking the entire file system. So
358 * if the filesystem is not unmounted cleanly, the global
359 * counts may not be accurate. Update them here if we can,
360 * for the benefit of users who might examine the file system
361 * using dumpe2fs. (This is for cosmetic reasons only.)
363 clear_problem_context(&pctx);
364 pctx.ino = fs->super->s_free_inodes_count;
365 pctx.ino2 = ctx->free_inodes;
366 if ((pctx.ino != pctx.ino2) &&
367 !(ctx->options & E2F_OPT_READONLY) &&
368 fix_problem(ctx, PR_0_FREE_INODE_COUNT, &pctx)) {
369 fs->super->s_free_inodes_count = ctx->free_inodes;
370 ext2fs_mark_super_dirty(fs);
372 clear_problem_context(&pctx);
373 pctx.blk = ext2fs_free_blocks_count(fs->super);
374 pctx.blk2 = ctx->free_blocks;
375 if ((pctx.blk != pctx.blk2) &&
376 !(ctx->options & E2F_OPT_READONLY) &&
377 fix_problem(ctx, PR_0_FREE_BLOCK_COUNT, &pctx)) {
378 ext2fs_free_blocks_count_set(fs->super, ctx->free_blocks);
379 ext2fs_mark_super_dirty(fs);
382 /* Print the summary message when we're skipping a full check */
383 printf(_("%s: clean, %u/%u files, %llu/%llu blocks"), ctx->device_name,
384 fs->super->s_inodes_count - fs->super->s_free_inodes_count,
385 fs->super->s_inodes_count,
386 ext2fs_blocks_count(fs->super) -
387 ext2fs_free_blocks_count(fs->super),
388 ext2fs_blocks_count(fs->super));
390 if (fs->super->s_max_mnt_count > 0) {
391 next_check = fs->super->s_max_mnt_count - fs->super->s_mnt_count;
395 if (!broken_system_clock && fs->super->s_checkinterval &&
396 ((ctx->now - fs->super->s_lastcheck) >= fs->super->s_checkinterval))
398 if (next_check <= 5) {
399 if (next_check == 1) {
401 fputs(_(" (check deferred; on battery)"),
404 fputs(_(" (check after next mount)"), stdout);
406 printf(_(" (check in %ld mounts)"), next_check);
412 e2fsck_free_context(ctx);
417 * For completion notice
423 struct percent_tbl e2fsck_tbl = {
424 5, { 0, 70, 90, 92, 95, 100 }
426 static char bar[128], spaces[128];
428 static float calc_percent(struct percent_tbl *tbl, int pass, int curr,
435 if (pass > tbl->max_pass || max == 0)
437 percent = ((float) curr) / ((float) max);
438 return ((percent * (tbl->table[pass] - tbl->table[pass-1]))
439 + tbl->table[pass-1]);
442 extern void e2fsck_clear_progbar(e2fsck_t ctx)
444 if (!(ctx->flags & E2F_FLAG_PROG_BAR))
447 printf("%s%s\r%s", ctx->start_meta, spaces + (sizeof(spaces) - 80),
450 ctx->flags &= ~E2F_FLAG_PROG_BAR;
453 int e2fsck_simple_progress(e2fsck_t ctx, const char *label, float percent,
456 static const char spinner[] = "\\|/-";
463 if (ctx->flags & E2F_FLAG_PROG_SUPPRESS)
467 * Calculate the new progress position. If the
468 * percentage hasn't changed, then we skip out right
471 fixed_percent = (int) ((10 * percent) + 0.5);
472 if (ctx->progress_last_percent == fixed_percent)
474 ctx->progress_last_percent = fixed_percent;
477 * If we've already updated the spinner once within
478 * the last 1/8th of a second, no point doing it
481 gettimeofday(&tv, NULL);
482 tick = (tv.tv_sec << 3) + (tv.tv_usec / (1000000 / 8));
483 if ((tick == ctx->progress_last_time) &&
484 (fixed_percent != 0) && (fixed_percent != 1000))
486 ctx->progress_last_time = tick;
489 * Advance the spinner, and note that the progress bar
490 * will be on the screen
492 ctx->progress_pos = (ctx->progress_pos+1) & 3;
493 ctx->flags |= E2F_FLAG_PROG_BAR;
495 dpywidth = 66 - strlen(label);
496 dpywidth = 8 * (dpywidth / 8);
500 i = ((percent * dpywidth) + 50) / 100;
501 printf("%s%s: |%s%s", ctx->start_meta, label,
502 bar + (sizeof(bar) - (i+1)),
503 spaces + (sizeof(spaces) - (dpywidth - i + 1)));
504 if (fixed_percent == 1000)
507 fputc(spinner[ctx->progress_pos & 3], stdout);
508 printf(" %4.1f%% ", percent);
510 printf("%u\r", dpynum);
512 fputs(" \r", stdout);
513 fputs(ctx->stop_meta, stdout);
515 if (fixed_percent == 1000)
516 e2fsck_clear_progbar(ctx);
522 static int e2fsck_update_progress(e2fsck_t ctx, int pass,
523 unsigned long cur, unsigned long max)
531 if (ctx->progress_fd) {
532 snprintf(buf, sizeof(buf), "%d %lu %lu %s\n",
533 pass, cur, max, ctx->device_name);
534 write_all(ctx->progress_fd, buf, strlen(buf));
536 percent = calc_percent(&e2fsck_tbl, pass, cur, max);
537 e2fsck_simple_progress(ctx, ctx->device_name,
543 #define PATH_SET "PATH=/sbin"
545 static void reserve_stdio_fds(void)
550 fd = open("/dev/null", O_RDWR);
554 fprintf(stderr, _("ERROR: Couldn't open "
564 static void signal_progress_on(int sig EXT2FS_ATTR((unused)))
566 e2fsck_t ctx = e2fsck_global_ctx;
571 ctx->progress = e2fsck_update_progress;
574 static void signal_progress_off(int sig EXT2FS_ATTR((unused)))
576 e2fsck_t ctx = e2fsck_global_ctx;
581 e2fsck_clear_progbar(ctx);
585 static void signal_cancel(int sig EXT2FS_ATTR((unused)))
587 e2fsck_t ctx = e2fsck_global_ctx;
592 ctx->flags |= E2F_FLAG_CANCEL;
596 static void parse_extended_opts(e2fsck_t ctx, const char *opts)
598 char *buf, *token, *next, *p, *arg;
600 int extended_usage = 0;
602 buf = string_copy(ctx, opts, 0);
603 for (token = buf; token && *token; token = next) {
604 p = strchr(token, ',');
610 arg = strchr(token, '=');
615 if (strcmp(token, "ea_ver") == 0) {
620 ea_ver = strtoul(arg, &p, 0);
622 ((ea_ver != 1) && (ea_ver != 2))) {
624 _("Invalid EA version.\n"));
628 ctx->ext_attr_ver = ea_ver;
629 } else if (strcmp(token, "fragcheck") == 0) {
630 ctx->options |= E2F_OPT_FRAGCHECK;
632 } else if (strcmp(token, "journal_only") == 0) {
637 ctx->options |= E2F_OPT_JOURNAL_ONLY;
638 } else if (strcmp(token, "discard") == 0) {
639 ctx->options |= E2F_OPT_DISCARD;
641 } else if (strcmp(token, "nodiscard") == 0) {
642 ctx->options &= ~E2F_OPT_DISCARD;
645 fprintf(stderr, _("Unknown extended option: %s\n"),
652 if (extended_usage) {
653 fputs(("\nExtended options are separated by commas, "
654 "and may take an argument which\n"
655 "is set off by an equals ('=') sign. "
656 "Valid extended options are:\n"), stderr);
657 fputs(("\tea_ver=<ea_version (1 or 2)>\n"), stderr);
658 fputs(("\tfragcheck\n"), stderr);
659 fputs(("\tjournal_only\n"), stderr);
660 fputs(("\tdiscard\n"), stderr);
661 fputs(("\tnodiscard\n"), stderr);
667 static void syntax_err_report(const char *filename, long err, int line_num)
670 _("Syntax error in e2fsck config file (%s, line #%d)\n\t%s\n"),
671 filename, line_num, error_message(err));
675 static const char *config_fn[] = { ROOT_SYSCONFDIR "/e2fsck.conf", 0 };
677 static errcode_t PRS(int argc, char *argv[], e2fsck_t *ret_ctx)
682 extern void *mallwatch;
689 char *extended_opts = 0;
691 int res; /* result of sscanf */
692 #ifdef CONFIG_JBD_DEBUG
696 retval = e2fsck_allocate_context(&ctx);
702 setvbuf(stdout, NULL, _IONBF, BUFSIZ);
703 setvbuf(stderr, NULL, _IONBF, BUFSIZ);
704 if (isatty(0) && isatty(1)) {
705 ctx->interactive = 1;
707 ctx->start_meta[0] = '\001';
708 ctx->stop_meta[0] = '\002';
710 memset(bar, '=', sizeof(bar)-1);
711 memset(spaces, ' ', sizeof(spaces)-1);
712 add_error_table(&et_ext2_error_table);
713 add_error_table(&et_prof_error_table);
714 blkid_get_cache(&ctx->blkid, NULL);
717 ctx->program_name = *argv;
719 ctx->program_name = "e2fsck";
721 while ((c = getopt (argc, argv, "panyrcC:B:dE:fvtFVM:b:I:j:P:l:L:N:SsDk")) != EOF)
724 ctx->progress = e2fsck_update_progress;
725 res = sscanf(optarg, "%d", &ctx->progress_fd);
729 if (ctx->progress_fd < 0) {
731 ctx->progress_fd = ctx->progress_fd * -1;
733 if (!ctx->progress_fd)
735 /* Validate the file descriptor to avoid disasters */
736 fd = dup(ctx->progress_fd);
739 _("Error validating file descriptor %d: %s\n"),
741 error_message(errno));
743 _("Invalid completion information file descriptor"));
748 ctx->options |= E2F_OPT_COMPRESS_DIRS;
751 extended_opts = optarg;
755 if (ctx->options & (E2F_OPT_YES|E2F_OPT_NO)) {
758 _("Only one of the options -p/-a, -n or -y may be specified."));
760 ctx->options |= E2F_OPT_PREEN;
763 if (ctx->options & (E2F_OPT_YES|E2F_OPT_PREEN))
765 ctx->options |= E2F_OPT_NO;
768 if (ctx->options & (E2F_OPT_PREEN|E2F_OPT_NO))
770 ctx->options |= E2F_OPT_YES;
773 #ifdef RESOURCE_TRACK
774 if (ctx->options & E2F_OPT_TIME)
775 ctx->options |= E2F_OPT_TIME2;
777 ctx->options |= E2F_OPT_TIME;
779 fprintf(stderr, _("The -t option is not "
780 "supported on this version of e2fsck.\n"));
785 ctx->options |= E2F_OPT_WRITECHECK;
786 ctx->options |= E2F_OPT_CHECKBLOCKS;
789 /* What we do by default, anyway! */
792 res = sscanf(optarg, "%llu", &ctx->use_superblock);
795 ctx->flags |= E2F_FLAG_SB_SPECIFIED;
798 ctx->blocksize = atoi(optarg);
801 res = sscanf(optarg, "%d", &ctx->inode_buffer_blocks);
806 ctx->journal_name = blkid_get_devname(ctx->blkid,
808 if (!ctx->journal_name) {
809 com_err(ctx->program_name, 0,
810 _("Unable to resolve '%s'"),
816 res = sscanf(optarg, "%d", &ctx->process_inode_size);
821 replace_bad_blocks++;
823 bad_blocks_file = string_copy(ctx, optarg, 0);
826 ctx->options |= E2F_OPT_DEBUG;
829 ctx->options |= E2F_OPT_FORCE;
838 show_version_only = 1;
842 mallwatch = (void *) strtol(optarg, NULL, 0);
846 ctx->device_name = string_copy(ctx, optarg, 0);
854 if (show_version_only)
856 if (optind != argc - 1)
858 if ((ctx->options & E2F_OPT_NO) &&
859 (ctx->options & E2F_OPT_COMPRESS_DIRS)) {
860 com_err(ctx->program_name, 0,
861 _("The -n and -D options are incompatible."));
864 if ((ctx->options & E2F_OPT_NO) && cflag) {
865 com_err(ctx->program_name, 0,
866 _("The -n and -c options are incompatible."));
869 if ((ctx->options & E2F_OPT_NO) && bad_blocks_file) {
870 com_err(ctx->program_name, 0,
871 _("The -n and -l/-L options are incompatible."));
874 if (ctx->options & E2F_OPT_NO)
875 ctx->options |= E2F_OPT_READONLY;
877 ctx->io_options = strchr(argv[optind], '?');
879 *ctx->io_options++ = 0;
880 ctx->filesystem_name = blkid_get_devname(ctx->blkid, argv[optind], 0);
881 if (!ctx->filesystem_name) {
882 com_err(ctx->program_name, 0, _("Unable to resolve '%s'"),
887 parse_extended_opts(ctx, extended_opts);
889 if ((cp = getenv("E2FSCK_CONFIG")) != NULL)
891 profile_set_syntax_err_cb(syntax_err_report);
892 profile_init(config_fn, &ctx->profile);
895 fd = open(ctx->filesystem_name, O_RDONLY, 0);
897 com_err("open", errno,
898 _("while opening %s for flushing"),
899 ctx->filesystem_name);
902 if ((retval = ext2fs_sync_device(fd, 1))) {
903 com_err("ext2fs_sync_device", retval,
904 _("while trying to flush %s"),
905 ctx->filesystem_name);
910 if (cflag && bad_blocks_file) {
911 fprintf(stderr, _("The -c and the -l/-L options may "
912 "not be both used at the same time.\n"));
917 * Set up signal action
919 memset(&sa, 0, sizeof(struct sigaction));
920 sa.sa_handler = signal_cancel;
921 sigaction(SIGINT, &sa, 0);
922 sigaction(SIGTERM, &sa, 0);
924 sa.sa_flags = SA_RESTART;
926 e2fsck_global_ctx = ctx;
927 sa.sa_handler = signal_progress_on;
928 sigaction(SIGUSR1, &sa, 0);
929 sa.sa_handler = signal_progress_off;
930 sigaction(SIGUSR2, &sa, 0);
933 /* Update our PATH to include /sbin if we need to run badblocks */
935 char *oldpath = getenv("PATH");
937 int len = sizeof(PATH_SET) + 1;
940 len += strlen(oldpath);
942 newpath = malloc(len);
944 fatal_error(ctx, "Couldn't malloc() newpath");
945 strcpy(newpath, PATH_SET);
948 strcat(newpath, ":");
949 strcat(newpath, oldpath);
953 #ifdef CONFIG_JBD_DEBUG
954 jbd_debug = getenv("E2FSCK_JBD_DEBUG");
956 res = sscanf(jbd_debug, "%d", &journal_enable_debug);
959 _("E2FSCK_JBD_DEBUG \"%s\" not an integer\n\n"),
968 fprintf(stderr, _("\nInvalid non-numeric argument to -%c (\"%s\")\n\n"),
973 static errcode_t try_open_fs(e2fsck_t ctx, int flags, io_manager io_ptr,
979 if (ctx->superblock && ctx->blocksize) {
980 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
981 flags, ctx->superblock, ctx->blocksize,
983 } else if (ctx->superblock) {
985 for (blocksize = EXT2_MIN_BLOCK_SIZE;
986 blocksize <= EXT2_MAX_BLOCK_SIZE; blocksize *= 2) {
988 ext2fs_free(*ret_fs);
991 retval = ext2fs_open2(ctx->filesystem_name,
992 ctx->io_options, flags,
993 ctx->superblock, blocksize,
999 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
1000 flags, 0, 0, io_ptr, ret_fs);
1004 static const char *my_ver_string = E2FSPROGS_VERSION;
1005 static const char *my_ver_date = E2FSPROGS_DATE;
1007 int main (int argc, char *argv[])
1009 errcode_t retval = 0, retval2 = 0, orig_retval = 0;
1010 int exit_value = FSCK_OK;
1013 struct ext2_super_block *sb;
1014 const char *lib_ver_date;
1015 int my_ver, lib_ver;
1017 blk_t orig_superblock;
1018 struct problem_context pctx;
1019 int flags, run_result;
1021 int sysval, sys_page_size = 4096;
1026 clear_problem_context(&pctx);
1034 setlocale(LC_MESSAGES, "");
1035 setlocale(LC_CTYPE, "");
1036 bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1037 textdomain(NLS_CAT_NAME);
1039 my_ver = ext2fs_parse_version_string(my_ver_string);
1040 lib_ver = ext2fs_get_library_version(0, &lib_ver_date);
1041 if (my_ver > lib_ver) {
1042 fprintf( stderr, _("Error: ext2fs library version "
1044 show_version_only++;
1047 retval = PRS(argc, argv, &ctx);
1049 com_err("e2fsck", retval,
1050 _("while trying to initialize program"));
1053 reserve_stdio_fds();
1055 init_resource_track(&ctx->global_rtrack, NULL);
1056 if (!(ctx->options & E2F_OPT_PREEN) || show_version_only)
1057 fprintf(stderr, "e2fsck %s (%s)\n", my_ver_string,
1060 if (show_version_only) {
1061 fprintf(stderr, _("\tUsing %s, %s\n"),
1062 error_message(EXT2_ET_BASE), lib_ver_date);
1068 if (!(ctx->options & E2F_OPT_PREEN) &&
1069 !(ctx->options & E2F_OPT_NO) &&
1070 !(ctx->options & E2F_OPT_YES)) {
1071 if (!ctx->interactive)
1073 _("need terminal for interactive repairs"));
1075 ctx->superblock = ctx->use_superblock;
1077 #ifdef CONFIG_TESTIO_DEBUG
1078 if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1079 io_ptr = test_io_manager;
1080 test_io_backing_manager = unix_io_manager;
1083 io_ptr = unix_io_manager;
1084 flags = EXT2_FLAG_NOFREE_ON_ERROR;
1085 profile_get_boolean(ctx->profile, "options", "old_bitmaps", 0, 0,
1088 flags |= EXT2_FLAG_64BITS;
1089 if ((ctx->options & E2F_OPT_READONLY) == 0)
1090 flags |= EXT2_FLAG_RW;
1091 if ((ctx->mount_flags & EXT2_MF_MOUNTED) == 0)
1092 flags |= EXT2_FLAG_EXCLUSIVE;
1094 retval = try_open_fs(ctx, flags, io_ptr, &fs);
1096 if (!ctx->superblock && !(ctx->options & E2F_OPT_PREEN) &&
1097 !(ctx->flags & E2F_FLAG_SB_SPECIFIED) &&
1098 ((retval == EXT2_ET_BAD_MAGIC) ||
1099 (retval == EXT2_ET_CORRUPT_SUPERBLOCK) ||
1100 ((retval == 0) && (retval2 = ext2fs_check_desc(fs))))) {
1101 if (retval2 == ENOMEM) {
1105 if (fs->flags & EXT2_FLAG_NOFREE_ON_ERROR) {
1109 if (!fs || (fs->group_desc_count > 1)) {
1110 printf(_("%s: %s trying backup blocks...\n"),
1112 retval ? _("Superblock invalid,") :
1113 _("Group descriptors look bad..."));
1114 orig_superblock = ctx->superblock;
1115 get_backup_sb(ctx, fs, ctx->filesystem_name, io_ptr);
1118 orig_retval = retval;
1119 retval = try_open_fs(ctx, flags, io_ptr, &fs);
1120 if ((orig_retval == 0) && retval != 0) {
1123 com_err(ctx->program_name, retval,
1124 "when using the backup blocks");
1125 printf(_("%s: going back to original "
1126 "superblock\n"), ctx->program_name);
1127 ctx->superblock = orig_superblock;
1128 retval = try_open_fs(ctx, flags, io_ptr, &fs);
1132 if (((retval == EXT2_ET_UNSUPP_FEATURE) ||
1133 (retval == EXT2_ET_RO_UNSUPP_FEATURE)) &&
1136 features[0] = (sb->s_feature_compat &
1137 ~EXT2_LIB_FEATURE_COMPAT_SUPP);
1138 features[1] = (sb->s_feature_incompat &
1139 ~EXT2_LIB_FEATURE_INCOMPAT_SUPP);
1140 features[2] = (sb->s_feature_ro_compat &
1141 ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
1142 if (features[0] || features[1] || features[2])
1143 goto print_unsupp_features;
1148 retval = orig_retval;
1149 com_err(ctx->program_name, retval, _("while trying to open %s"),
1150 ctx->filesystem_name);
1151 if (retval == EXT2_ET_REV_TOO_HIGH) {
1152 printf(_("The filesystem revision is apparently "
1153 "too high for this version of e2fsck.\n"
1154 "(Or the filesystem superblock "
1155 "is corrupt)\n\n"));
1156 fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
1157 } else if (retval == EXT2_ET_SHORT_READ)
1158 printf(_("Could this be a zero-length partition?\n"));
1159 else if ((retval == EPERM) || (retval == EACCES))
1160 printf(_("You must have %s access to the "
1161 "filesystem or be root\n"),
1162 (ctx->options & E2F_OPT_READONLY) ?
1164 else if (retval == ENXIO)
1165 printf(_("Possibly non-existent or swap device?\n"));
1166 else if (retval == EBUSY)
1167 printf(_("Filesystem mounted or opened exclusively "
1168 "by another program?\n"));
1169 else if (retval == ENOENT)
1170 printf(_("Possibly non-existent device?\n"));
1172 else if (retval == EROFS)
1173 printf(_("Disk write-protected; use the -n option "
1174 "to do a read-only\n"
1175 "check of the device.\n"));
1178 fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
1179 fatal_error(ctx, 0);
1182 * We only update the master superblock because (a) paranoia;
1183 * we don't want to corrupt the backup superblocks, and (b) we
1184 * don't need to update the mount count and last checked
1185 * fields in the backup superblock (the kernel doesn't update
1186 * the backup superblocks anyway). With newer versions of the
1187 * library this flag is set by ext2fs_open2(), but we set this
1188 * here just to be sure. (No, we don't support e2fsck running
1189 * with some other libext2fs than the one that it was shipped
1190 * with, but just in case....)
1192 fs->flags |= EXT2_FLAG_MASTER_SB_ONLY;
1194 if (!(ctx->flags & E2F_FLAG_GOT_DEVSIZE)) {
1195 __u32 blocksize = EXT2_BLOCK_SIZE(fs->super);
1196 int need_restart = 0;
1198 pctx.errcode = ext2fs_get_device_size2(ctx->filesystem_name,
1202 * The floppy driver refuses to allow anyone else to
1203 * open the device if has been opened with O_EXCL;
1204 * this is unlike other block device drivers in Linux.
1205 * To handle this, we close the filesystem and then
1206 * reopen the filesystem after we get the device size.
1208 if (pctx.errcode == EBUSY) {
1212 ext2fs_get_device_size2(ctx->filesystem_name,
1216 if (pctx.errcode == EXT2_ET_UNIMPLEMENTED)
1217 ctx->num_blocks = 0;
1218 else if (pctx.errcode) {
1219 fix_problem(ctx, PR_0_GETSIZE_ERROR, &pctx);
1220 ctx->flags |= E2F_FLAG_ABORT;
1221 fatal_error(ctx, 0);
1223 ctx->flags |= E2F_FLAG_GOT_DEVSIZE;
1229 fs->priv_data = ctx;
1232 if (sb->s_rev_level > E2FSCK_CURRENT_REV) {
1233 com_err(ctx->program_name, EXT2_ET_REV_TOO_HIGH,
1234 _("while trying to open %s"),
1235 ctx->filesystem_name);
1237 fatal_error(ctx, _("Get a newer version of e2fsck!"));
1241 * Set the device name, which is used whenever we print error
1242 * or informational messages to the user.
1244 if (ctx->device_name == 0 &&
1245 (sb->s_volume_name[0] != 0)) {
1246 ctx->device_name = string_copy(ctx, sb->s_volume_name,
1247 sizeof(sb->s_volume_name));
1249 if (ctx->device_name == 0)
1250 ctx->device_name = string_copy(ctx, ctx->filesystem_name, 0);
1251 for (cp = ctx->device_name; *cp; cp++)
1252 if (isspace(*cp) || *cp == ':')
1255 ehandler_init(fs->io);
1257 if ((ctx->mount_flags & EXT2_MF_MOUNTED) &&
1258 !(sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER))
1262 * Make sure the ext3 superblock fields are consistent.
1264 retval = e2fsck_check_ext3_journal(ctx);
1266 com_err(ctx->program_name, retval,
1267 _("while checking ext3 journal for %s"),
1269 fatal_error(ctx, 0);
1273 * Check to see if we need to do ext3-style recovery. If so,
1274 * do it, and then restart the fsck.
1276 if (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) {
1277 if (ctx->options & E2F_OPT_READONLY) {
1278 printf(_("Warning: skipping journal recovery "
1279 "because doing a read-only filesystem "
1281 io_channel_flush(ctx->fs->io);
1283 if (ctx->flags & E2F_FLAG_RESTARTED) {
1285 * Whoops, we attempted to run the
1286 * journal twice. This should never
1287 * happen, unless the hardware or
1288 * device driver is being bogus.
1290 com_err(ctx->program_name, 0,
1291 _("unable to set superblock flags on %s\n"), ctx->device_name);
1292 fatal_error(ctx, 0);
1294 retval = e2fsck_run_ext3_journal(ctx);
1296 com_err(ctx->program_name, retval,
1297 _("while recovering ext3 journal of %s"),
1299 fatal_error(ctx, 0);
1301 ext2fs_close(ctx->fs);
1303 ctx->flags |= E2F_FLAG_RESTARTED;
1310 * Check for compatibility with the feature sets. We need to
1311 * be more stringent than ext2fs_open().
1313 features[0] = sb->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP;
1314 features[1] = sb->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP;
1315 features[2] = (sb->s_feature_ro_compat &
1316 ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
1317 print_unsupp_features:
1318 if (features[0] || features[1] || features[2]) {
1320 __u32 *mask = features, m;
1322 fprintf(stderr, _("%s has unsupported feature(s):"),
1323 ctx->filesystem_name);
1325 for (i=0; i <3; i++,mask++) {
1326 for (j=0,m=1; j < 32; j++, m<<=1) {
1328 fprintf(stderr, " %s",
1329 e2p_feature2string(i, m));
1335 #ifdef ENABLE_COMPRESSION
1336 if (sb->s_feature_incompat & EXT2_FEATURE_INCOMPAT_COMPRESSION)
1337 com_err(ctx->program_name, 0,
1338 _("Warning: compression support is experimental.\n"));
1340 #ifndef ENABLE_HTREE
1341 if (sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) {
1342 com_err(ctx->program_name, 0,
1343 _("E2fsck not compiled with HTREE support,\n\t"
1344 "but filesystem %s has HTREE directories.\n"),
1351 * If the user specified a specific superblock, presumably the
1352 * master superblock has been trashed. So we mark the
1353 * superblock as dirty, so it can be written out.
1355 if (ctx->superblock &&
1356 !(ctx->options & E2F_OPT_READONLY))
1357 ext2fs_mark_super_dirty(fs);
1360 * Calculate the number of filesystem blocks per pagesize. If
1361 * fs->blocksize > page_size, set the number of blocks per
1362 * pagesize to 1 to avoid division by zero errors.
1365 sysval = sysconf(_SC_PAGESIZE);
1367 sys_page_size = sysval;
1368 #endif /* _SC_PAGESIZE */
1369 ctx->blocks_per_page = sys_page_size / fs->blocksize;
1370 if (ctx->blocks_per_page == 0)
1371 ctx->blocks_per_page = 1;
1373 if (ctx->superblock)
1374 set_latch_flags(PR_LATCH_RELOC, PRL_LATCHED, 0);
1375 ext2fs_mark_valid(fs);
1376 check_super_block(ctx);
1377 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1378 fatal_error(ctx, 0);
1380 check_resize_inode(ctx);
1381 if (bad_blocks_file)
1382 read_bad_blocks_file(ctx, bad_blocks_file, replace_bad_blocks);
1384 read_bad_blocks_file(ctx, 0, !keep_bad_blocks); /* Test disk */
1385 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1386 fatal_error(ctx, 0);
1389 * Mark the system as valid, 'til proven otherwise
1391 ext2fs_mark_valid(fs);
1393 retval = ext2fs_read_bb_inode(fs, &fs->badblocks);
1395 com_err(ctx->program_name, retval,
1396 _("while reading bad blocks inode"));
1398 printf(_("This doesn't bode well,"
1399 " but we'll try to go on...\n"));
1403 * Save the journal size in megabytes.
1404 * Try and use the journal size from the backup else let e2fsck
1405 * find the default journal size.
1407 if (sb->s_jnl_backup_type == EXT3_JNL_BACKUP_BLOCKS)
1408 journal_size = (sb->s_jnl_blocks[15] << (32 - 20)) |
1409 (sb->s_jnl_blocks[16] >> 20);
1413 run_result = e2fsck_run(ctx);
1414 e2fsck_clear_progbar(ctx);
1416 if (ctx->flags & E2F_FLAG_JOURNAL_INODE) {
1417 if (fix_problem(ctx, PR_6_RECREATE_JOURNAL, &pctx)) {
1418 if (journal_size < 1024)
1419 journal_size = ext2fs_default_journal_size(ext2fs_blocks_count(fs->super));
1420 if (journal_size < 0) {
1421 fs->super->s_feature_compat &=
1422 ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
1423 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1424 com_err(ctx->program_name, 0,
1425 _("Couldn't determine journal size"));
1428 printf(_("Creating journal (%d blocks): "),
1431 retval = ext2fs_add_journal_inode(fs,
1434 com_err("Error ", retval,
1435 _("\n\twhile trying to create journal"));
1438 printf(_(" Done.\n"));
1439 printf(_("\n*** journal has been re-created - "
1440 "filesystem is now ext3 again ***\n"));
1445 if (run_result == E2F_FLAG_RESTART) {
1446 printf(_("Restarting e2fsck from the beginning...\n"));
1447 retval = e2fsck_reset_context(ctx);
1449 com_err(ctx->program_name, retval,
1450 _("while resetting context"));
1451 fatal_error(ctx, 0);
1456 if (run_result & E2F_FLAG_CANCEL) {
1457 printf(_("%s: e2fsck canceled.\n"), ctx->device_name ?
1458 ctx->device_name : ctx->filesystem_name);
1459 exit_value |= FSCK_CANCELED;
1461 if (run_result & E2F_FLAG_ABORT)
1462 fatal_error(ctx, _("aborted"));
1463 if (check_backup_super_block(ctx)) {
1464 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1465 ext2fs_mark_super_dirty(fs);
1469 mtrace_print("Cleanup");
1471 if (ext2fs_test_changed(fs)) {
1472 exit_value |= FSCK_NONDESTRUCT;
1473 if (!(ctx->options & E2F_OPT_PREEN))
1474 printf(_("\n%s: ***** FILE SYSTEM WAS MODIFIED *****\n"),
1476 if (ctx->mount_flags & EXT2_MF_ISROOT) {
1477 printf(_("%s: ***** REBOOT LINUX *****\n"),
1479 exit_value |= FSCK_REBOOT;
1482 if (!ext2fs_test_valid(fs) ||
1483 ((exit_value & FSCK_CANCELED) &&
1484 (sb->s_state & EXT2_ERROR_FS))) {
1485 printf(_("\n%s: ********** WARNING: Filesystem still has "
1486 "errors **********\n\n"), ctx->device_name);
1487 exit_value |= FSCK_UNCORRECTED;
1488 exit_value &= ~FSCK_NONDESTRUCT;
1490 if (exit_value & FSCK_CANCELED) {
1491 int allow_cancellation;
1493 profile_get_boolean(ctx->profile, "options",
1494 "allow_cancellation", 0, 0,
1495 &allow_cancellation);
1496 exit_value &= ~FSCK_NONDESTRUCT;
1497 if (allow_cancellation && ext2fs_test_valid(fs) &&
1498 (sb->s_state & EXT2_VALID_FS) &&
1499 !(sb->s_state & EXT2_ERROR_FS))
1503 if (!(ctx->options & E2F_OPT_READONLY)) {
1504 if (ext2fs_test_valid(fs)) {
1505 if (!(sb->s_state & EXT2_VALID_FS))
1506 exit_value |= FSCK_NONDESTRUCT;
1507 sb->s_state = EXT2_VALID_FS;
1509 sb->s_state &= ~EXT2_VALID_FS;
1510 sb->s_mnt_count = 0;
1511 if (!(ctx->flags & E2F_FLAG_TIME_INSANE))
1512 sb->s_lastcheck = ctx->now;
1513 memset(((char *) sb) + EXT4_S_ERR_START, 0,
1515 ext2fs_mark_super_dirty(fs);
1519 if ((run_result & E2F_FLAG_CANCEL) == 0 &&
1520 sb->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_GDT_CSUM &&
1521 !(ctx->options & E2F_OPT_READONLY)) {
1522 retval = ext2fs_set_gdt_csum(ctx->fs);
1524 com_err(ctx->program_name, retval,
1525 _("while setting block group checksum info"));
1526 fatal_error(ctx, 0);
1530 e2fsck_write_bitmaps(ctx);
1531 io_channel_flush(ctx->fs->io);
1532 print_resource_track(ctx, NULL, &ctx->global_rtrack, ctx->fs->io);
1536 free(ctx->journal_name);
1538 e2fsck_free_context(ctx);
1539 remove_error_table(&et_ext2_error_table);
1540 remove_error_table(&et_prof_error_table);