e2fsck/unix.c

   1 /*
   2  * unix.c - The unix-specific code for e2fsck
   3  *
   4  * Copyright (C) 1993, 1994, 1995, 1996, 1997 Theodore Ts'o.
   5  *
   6  * %Begin-Header%
   7  * This file may be redistributed under the terms of the GNU Public
   8  * License.
   9  * %End-Header%
  10  */
  11
  12 #define _XOPEN_SOURCE 600 /* for inclusion of sa_handler in Solaris */
  13
  14 #include "config.h"
  15 #include <stdio.h>
  16 #ifdef HAVE_STDLIB_H
  17 #include <stdlib.h>
  18 #endif
  19 #include <string.h>
  20 #include <fcntl.h>
  21 #include <ctype.h>
  22 #include <time.h>
  23 #ifdef HAVE_SIGNAL_H
  24 #include <signal.h>
  25 #endif
  26 #ifdef HAVE_GETOPT_H
  27 #include <getopt.h>
  28 #else
  29 extern char *optarg;
  30 extern int optind;
  31 #endif
  32 #include <unistd.h>
  33 #ifdef HAVE_ERRNO_H
  34 #include <errno.h>
  35 #endif
  36 #ifdef HAVE_SYS_IOCTL_H
  37 #include <sys/ioctl.h>
  38 #endif
  39 #ifdef HAVE_MALLOC_H
  40 #include <malloc.h>
  41 #endif
  42 #ifdef HAVE_SYS_TYPES_H
  43 #include <sys/types.h>
  44 #endif
  45 #ifdef HAVE_DIRENT_H
  46 #include <dirent.h>
  47 #endif
  48
  49 #include "e2p/e2p.h"
  50 #include "et/com_err.h"
  51 #include "e2p/e2p.h"
  52 #include "e2fsck.h"
  53 #include "problem.h"
  54 #include "../version.h"
  55
  56 /* Command line options */
  57 static int cflag;               /* check disk */
  58 static int show_version_only;
  59 static int verbose;
  60
  61 static int replace_bad_blocks;
  62 static int keep_bad_blocks;
  63 static char *bad_blocks_file;
  64
  65 e2fsck_t e2fsck_global_ctx;     /* Try your very best not to use this! */
  66
  67 #ifdef CONFIG_JBD_DEBUG         /* Enabled by configure --enable-jfs-debug */
  68 int journal_enable_debug = -1;
  69 #endif
  70
  71 static void usage(e2fsck_t ctx)
  72 {
  73         fprintf(stderr,
  74                 _("Usage: %s [-panyrcdfvtDFV] [-b superblock] [-B blocksize]\n"
  75                 "\t\t[-I inode_buffer_blocks] [-P process_inode_size]\n"
  76                 "\t\t[-l|-L bad_blocks_file] [-C fd] [-j external_journal]\n"
  77                 "\t\t[-E extended-options] device\n"),
  78                 ctx->program_name);
  79
  80         fprintf(stderr, _("\nEmergency help:\n"
  81                 " -p                   Automatic repair (no questions)\n"
  82                 " -n                   Make no changes to the filesystem\n"
  83                 " -y                   Assume \"yes\" to all questions\n"
  84                 " -c                   Check for bad blocks and add them to the badblock list\n"
  85                 " -f                   Force checking even if filesystem is marked clean\n"));
  86         fprintf(stderr, _(""
  87                 " -v                   Be verbose\n"
  88                 " -b superblock        Use alternative superblock\n"
  89                 " -B blocksize         Force blocksize when looking for superblock\n"
  90                 " -j external_journal  Set location of the external journal\n"
  91                 " -l bad_blocks_file   Add to badblocks list\n"
  92                 " -L bad_blocks_file   Set badblocks list\n"
  93                 ));
  94
  95         exit(FSCK_USAGE);
  96 }
  97
  98 static void show_stats(e2fsck_t ctx)
  99 {
 100         ext2_filsys fs = ctx->fs;
 101         ext2_ino_t inodes, inodes_used;
 102         blk64_t blocks, blocks_used;
 103         unsigned int dir_links;
 104         unsigned int num_files, num_links;
 105         int frag_percent_file, frag_percent_dir, frag_percent_total;
 106         int i, j;
 107
 108         dir_links = 2 * ctx->fs_directory_count - 1;
 109         num_files = ctx->fs_total_count - dir_links;
 110         num_links = ctx->fs_links_count - dir_links;
 111         inodes = fs->super->s_inodes_count;
 112         inodes_used = (fs->super->s_inodes_count -
 113                        fs->super->s_free_inodes_count);
 114         blocks = ext2fs_blocks_count(fs->super);
 115         blocks_used = (ext2fs_blocks_count(fs->super) -
 116                        ext2fs_free_blocks_count(fs->super));
 117
 118         frag_percent_file = (10000 * ctx->fs_fragmented) / inodes_used;
 119         frag_percent_file = (frag_percent_file + 5) / 10;
 120
 121         frag_percent_dir = (10000 * ctx->fs_fragmented_dir) / inodes_used;
 122         frag_percent_dir = (frag_percent_dir + 5) / 10;
 123
 124         frag_percent_total = ((10000 * (ctx->fs_fragmented +
 125                                         ctx->fs_fragmented_dir))
 126                               / inodes_used);
 127         frag_percent_total = (frag_percent_total + 5) / 10;
 128
 129         if (!verbose) {
 130                 log_out(ctx, _("%s: %u/%u files (%0d.%d%% non-contiguous), "
 131                                "%llu/%llu blocks\n"),
 132                         ctx->device_name, inodes_used, inodes,
 133                         frag_percent_total / 10, frag_percent_total % 10,
 134                         blocks_used, blocks);
 135                 return;
 136         }
 137         log_out(ctx, P_("\n%8u inode used (%2.2f%%)\n",
 138                         "\n%8u inodes used (%2.2f%%)\n",
 139                         inodes_used), inodes_used,
 140                 100.0 * inodes_used / inodes);
 141         log_out(ctx, P_("%8u non-contiguous file (%0d.%d%%)\n",
 142                         "%8u non-contiguous files (%0d.%d%%)\n",
 143                         ctx->fs_fragmented),
 144                 ctx->fs_fragmented, frag_percent_file / 10,
 145                 frag_percent_file % 10);
 146         log_out(ctx, P_("%8u non-contiguous directory (%0d.%d%%)\n",
 147                         "%8u non-contiguous directories (%0d.%d%%)\n",
 148                         ctx->fs_fragmented_dir),
 149                 ctx->fs_fragmented_dir, frag_percent_dir / 10,
 150                 frag_percent_dir % 10);
 151         log_out(ctx, _("         # of inodes with ind/dind/tind blocks: "
 152                        "%u/%u/%u\n"),
 153                 ctx->fs_ind_count, ctx->fs_dind_count, ctx->fs_tind_count);
 154
 155         for (j=MAX_EXTENT_DEPTH_COUNT-1; j >=0; j--)
 156                 if (ctx->extent_depth_count[j])
 157                         break;
 158         if (++j) {
 159                 log_out(ctx, _("         Extent depth histogram: "));
 160                 for (i=0; i < j; i++) {
 161                         if (i)
 162                                 fputc('/', stdout);
 163                         log_out(ctx, "%u", ctx->extent_depth_count[i]);
 164                 }
 165                 log_out(ctx, "\n");
 166         }
 167
 168         log_out(ctx, P_("%8llu block used (%2.2f%%)\n",
 169                         "%8llu blocks used (%2.2f%%)\n",
 170                    blocks_used), blocks_used, 100.0 * blocks_used / blocks);
 171         log_out(ctx, P_("%8u bad block\n", "%8u bad blocks\n",
 172                         ctx->fs_badblocks_count), ctx->fs_badblocks_count);
 173         log_out(ctx, P_("%8u large file\n", "%8u large files\n",
 174                         ctx->large_files), ctx->large_files);
 175         log_out(ctx, P_("\n%8u regular file\n", "\n%8u regular files\n",
 176                         ctx->fs_regular_count), ctx->fs_regular_count);
 177         log_out(ctx, P_("%8u directory\n", "%8u directories\n",
 178                         ctx->fs_directory_count), ctx->fs_directory_count);
 179         log_out(ctx, P_("%8u character device file\n",
 180                         "%8u character device files\n", ctx->fs_chardev_count),
 181                 ctx->fs_chardev_count);
 182         log_out(ctx, P_("%8u block device file\n", "%8u block device files\n",
 183                         ctx->fs_blockdev_count), ctx->fs_blockdev_count);
 184         log_out(ctx, P_("%8u fifo\n", "%8u fifos\n", ctx->fs_fifo_count),
 185                 ctx->fs_fifo_count);
 186         log_out(ctx, P_("%8u link\n", "%8u links\n",
 187                         ctx->fs_links_count - dir_links),
 188                 ctx->fs_links_count - dir_links);
 189         log_out(ctx, P_("%8u symbolic link", "%8u symbolic links",
 190                         ctx->fs_symlinks_count), ctx->fs_symlinks_count);
 191         log_out(ctx, P_(" (%u fast symbolic link)\n",
 192                         " (%u fast symbolic links)\n",
 193                         ctx->fs_fast_symlinks_count),
 194                 ctx->fs_fast_symlinks_count);
 195         log_out(ctx, P_("%8u socket\n", "%8u sockets\n", ctx->fs_sockets_count),
 196                 ctx->fs_sockets_count);
 197         log_out(ctx, "--------\n");
 198         log_out(ctx, P_("%8u file\n", "%8u files\n",
 199                         ctx->fs_total_count - dir_links),
 200                 ctx->fs_total_count - dir_links);
 201 }
 202
 203 static void check_mount(e2fsck_t ctx)
 204 {
 205         errcode_t       retval;
 206         int             cont;
 207
 208         retval = ext2fs_check_if_mounted(ctx->filesystem_name,
 209                                          &ctx->mount_flags);
 210         if (retval) {
 211                 com_err("ext2fs_check_if_mount", retval,
 212                         _("while determining whether %s is mounted."),
 213                         ctx->filesystem_name);
 214                 return;
 215         }
 216
 217         /*
 218          * If the filesystem isn't mounted, or it's the root
 219          * filesystem and it's mounted read-only, and we're not doing
 220          * a read/write check, then everything's fine.
 221          */
 222         if ((!(ctx->mount_flags & (EXT2_MF_MOUNTED | EXT2_MF_BUSY))) ||
 223             ((ctx->mount_flags & EXT2_MF_ISROOT) &&
 224              (ctx->mount_flags & EXT2_MF_READONLY) &&
 225              !(ctx->options & E2F_OPT_WRITECHECK)))
 226                 return;
 227
 228         if ((ctx->options & E2F_OPT_READONLY) &&
 229             !(ctx->options & E2F_OPT_WRITECHECK)) {
 230                 log_out(ctx, _("Warning!  %s is %s.\n"),
 231                         ctx->filesystem_name,
 232                         ctx->mount_flags & EXT2_MF_MOUNTED ?
 233                                 "mounted" : "in use");
 234                 return;
 235         }
 236
 237         log_out(ctx, _("%s is %s.\n"), ctx->filesystem_name,
 238                 ctx->mount_flags & EXT2_MF_MOUNTED ? "mounted" : "in use");
 239         if (!ctx->interactive || ctx->mount_flags & EXT2_MF_BUSY)
 240                 fatal_error(ctx, _("Cannot continue, aborting.\n\n"));
 241         puts("\007\007\007\007");
 242         log_out(ctx, _("\n\nWARNING!!!  "
 243                        "The filesystem is mounted.   "
 244                        "If you continue you ***WILL***\n"
 245                        "cause ***SEVERE*** filesystem damage.\n\n"));
 246         puts("\007\007\007");
 247         cont = ask_yn(ctx, _("Do you really want to continue"), 0);
 248         if (!cont) {
 249                 printf (_("check aborted.\n"));
 250                 exit (0);
 251         }
 252         return;
 253 }
 254
 255 static int is_on_batt(void)
 256 {
 257         FILE    *f;
 258         DIR     *d;
 259         char    tmp[80], tmp2[80], fname[80];
 260         unsigned int    acflag;
 261         struct dirent*  de;
 262
 263         f = fopen("/sys/class/power_supply/AC/online", "r");
 264         if (f) {
 265                 if (fscanf(f, "%u\n", &acflag) == 1) {
 266                         fclose(f);
 267                         return (!acflag);
 268                 }
 269                 fclose(f);
 270         }
 271         f = fopen("/proc/apm", "r");
 272         if (f) {
 273                 if (fscanf(f, "%s %s %s %x", tmp, tmp, tmp, &acflag) != 4)
 274                         acflag = 1;
 275                 fclose(f);
 276                 return (acflag != 1);
 277         }
 278         d = opendir("/proc/acpi/ac_adapter");
 279         if (d) {
 280                 while ((de=readdir(d)) != NULL) {
 281                         if (!strncmp(".", de->d_name, 1))
 282                                 continue;
 283                         snprintf(fname, 80, "/proc/acpi/ac_adapter/%s/state",
 284                                  de->d_name);
 285                         f = fopen(fname, "r");
 286                         if (!f)
 287                                 continue;
 288                         if (fscanf(f, "%s %s", tmp2, tmp) != 2)
 289                                 tmp[0] = 0;
 290                         fclose(f);
 291                         if (strncmp(tmp, "off-line", 8) == 0) {
 292                                 closedir(d);
 293                                 return 1;
 294                         }
 295                 }
 296                 closedir(d);
 297         }
 298         return 0;
 299 }
 300
 301 /*
 302  * This routine checks to see if a filesystem can be skipped; if so,
 303  * it will exit with E2FSCK_OK.  Under some conditions it will print a
 304  * message explaining why a check is being forced.
 305  */
 306 static void check_if_skip(e2fsck_t ctx)
 307 {
 308         ext2_filsys fs = ctx->fs;
 309         struct problem_context pctx;
 310         const char *reason = NULL;
 311         unsigned int reason_arg = 0;
 312         long next_check;
 313         int batt = is_on_batt();
 314         int defer_check_on_battery;
 315         int broken_system_clock;
 316         time_t lastcheck;
 317
 318         profile_get_boolean(ctx->profile, "options", "broken_system_clock",
 319                             0, 0, &broken_system_clock);
 320         if (ctx->flags & E2F_FLAG_TIME_INSANE)
 321                 broken_system_clock = 1;
 322         profile_get_boolean(ctx->profile, "options",
 323                             "defer_check_on_battery", 0, 1,
 324                             &defer_check_on_battery);
 325         if (!defer_check_on_battery)
 326                 batt = 0;
 327
 328         if ((ctx->options & E2F_OPT_FORCE) || bad_blocks_file || cflag)
 329                 return;
 330
 331         if (ctx->options & E2F_OPT_JOURNAL_ONLY)
 332                 goto skip;
 333
 334         lastcheck = fs->super->s_lastcheck;
 335         if (lastcheck > ctx->now)
 336                 lastcheck -= ctx->time_fudge;
 337         if ((fs->super->s_state & EXT2_ERROR_FS) ||
 338             !ext2fs_test_valid(fs))
 339                 reason = _(" contains a file system with errors");
 340         else if ((fs->super->s_state & EXT2_VALID_FS) == 0)
 341                 reason = _(" was not cleanly unmounted");
 342         else if (check_backup_super_block(ctx))
 343                 reason = _(" primary superblock features different from backup");
 344         else if ((fs->super->s_max_mnt_count > 0) &&
 345                  (fs->super->s_mnt_count >=
 346                   (unsigned) fs->super->s_max_mnt_count)) {
 347                 reason = _(" has been mounted %u times without being checked");
 348                 reason_arg = fs->super->s_mnt_count;
 349                 if (batt && (fs->super->s_mnt_count <
 350                              (unsigned) fs->super->s_max_mnt_count*2))
 351                         reason = 0;
 352         } else if (!broken_system_clock && fs->super->s_checkinterval &&
 353                    (ctx->now < lastcheck)) {
 354                 reason = _(" has filesystem last checked time in the future");
 355                 if (batt)
 356                         reason = 0;
 357         } else if (!broken_system_clock && fs->super->s_checkinterval &&
 358                    ((ctx->now - lastcheck) >=
 359                     ((time_t) fs->super->s_checkinterval))) {
 360                 reason = _(" has gone %u days without being checked");
 361                 reason_arg = (ctx->now - fs->super->s_lastcheck)/(3600*24);
 362                 if (batt && ((ctx->now - fs->super->s_lastcheck) <
 363                              fs->super->s_checkinterval*2))
 364                         reason = 0;
 365         }
 366         if (reason) {
 367                 log_out(ctx, "%s", ctx->device_name);
 368                 log_out(ctx, reason, reason_arg);
 369                 log_out(ctx, _(", check forced.\n"));
 370                 return;
 371         }
 372
 373         /*
 374          * Update the global counts from the block group counts.  This
 375          * is needed since modern kernels don't update the global
 376          * counts so as to avoid locking the entire file system.  So
 377          * if the filesystem is not unmounted cleanly, the global
 378          * counts may not be accurate.  Update them here if we can,
 379          * for the benefit of users who might examine the file system
 380          * using dumpe2fs.  (This is for cosmetic reasons only.)
 381          */
 382         clear_problem_context(&pctx);
 383         pctx.ino = fs->super->s_free_inodes_count;
 384         pctx.ino2 = ctx->free_inodes;
 385         if ((pctx.ino != pctx.ino2) &&
 386             !(ctx->options & E2F_OPT_READONLY) &&
 387             fix_problem(ctx, PR_0_FREE_INODE_COUNT, &pctx)) {
 388                 fs->super->s_free_inodes_count = ctx->free_inodes;
 389                 ext2fs_mark_super_dirty(fs);
 390         }
 391         clear_problem_context(&pctx);
 392         pctx.blk = ext2fs_free_blocks_count(fs->super);
 393         pctx.blk2 = ctx->free_blocks;
 394         if ((pctx.blk != pctx.blk2) &&
 395             !(ctx->options & E2F_OPT_READONLY) &&
 396             fix_problem(ctx, PR_0_FREE_BLOCK_COUNT, &pctx)) {
 397                 ext2fs_free_blocks_count_set(fs->super, ctx->free_blocks);
 398                 ext2fs_mark_super_dirty(fs);
 399         }
 400
 401         /* Print the summary message when we're skipping a full check */
 402         log_out(ctx, _("%s: clean, %u/%u files, %llu/%llu blocks"),
 403                 ctx->device_name,
 404                 fs->super->s_inodes_count - fs->super->s_free_inodes_count,
 405                 fs->super->s_inodes_count,
 406                 ext2fs_blocks_count(fs->super) -
 407                 ext2fs_free_blocks_count(fs->super),
 408                 ext2fs_blocks_count(fs->super));
 409         next_check = 100000;
 410         if (fs->super->s_max_mnt_count > 0) {
 411                 next_check = fs->super->s_max_mnt_count - fs->super->s_mnt_count;
 412                 if (next_check <= 0)
 413                         next_check = 1;
 414         }
 415         if (!broken_system_clock && fs->super->s_checkinterval &&
 416             ((ctx->now - fs->super->s_lastcheck) >= fs->super->s_checkinterval))
 417                 next_check = 1;
 418         if (next_check <= 5) {
 419                 if (next_check == 1) {
 420                         if (batt)
 421                                 log_out(ctx, _(" (check deferred; "
 422                                                "on battery)"));
 423                         else
 424                                 log_out(ctx, _(" (check after next mount)"));
 425                 } else
 426                         log_out(ctx, _(" (check in %ld mounts)"), next_check);
 427         }
 428         log_out(ctx, "\n");
 429 skip:
 430         ext2fs_close(fs);
 431         ctx->fs = NULL;
 432         e2fsck_free_context(ctx);
 433         exit(FSCK_OK);
 434 }
 435
 436 /*
 437  * For completion notice
 438  */
 439 struct percent_tbl {
 440         int     max_pass;
 441         int     table[32];
 442 };
 443 struct percent_tbl e2fsck_tbl = {
 444         5, { 0, 70, 90, 92,  95, 100 }
 445 };
 446 static char bar[128], spaces[128];
 447
 448 static float calc_percent(struct percent_tbl *tbl, int pass, int curr,
 449                           int max)
 450 {
 451         float   percent;
 452
 453         if (pass <= 0)
 454                 return 0.0;
 455         if (pass > tbl->max_pass || max == 0)
 456                 return 100.0;
 457         percent = ((float) curr) / ((float) max);
 458         return ((percent * (tbl->table[pass] - tbl->table[pass-1]))
 459                 + tbl->table[pass-1]);
 460 }
 461
 462 extern void e2fsck_clear_progbar(e2fsck_t ctx)
 463 {
 464         if (!(ctx->flags & E2F_FLAG_PROG_BAR))
 465                 return;
 466
 467         printf("%s%s\r%s", ctx->start_meta, spaces + (sizeof(spaces) - 80),
 468                ctx->stop_meta);
 469         fflush(stdout);
 470         ctx->flags &= ~E2F_FLAG_PROG_BAR;
 471 }
 472
 473 int e2fsck_simple_progress(e2fsck_t ctx, const char *label, float percent,
 474                            unsigned int dpynum)
 475 {
 476         static const char spinner[] = "\\|/-";
 477         int     i;
 478         unsigned int    tick;
 479         struct timeval  tv;
 480         int dpywidth;
 481         int fixed_percent;
 482
 483         if (ctx->flags & E2F_FLAG_PROG_SUPPRESS)
 484                 return 0;
 485
 486         /*
 487          * Calculate the new progress position.  If the
 488          * percentage hasn't changed, then we skip out right
 489          * away.
 490          */
 491         fixed_percent = (int) ((10 * percent) + 0.5);
 492         if (ctx->progress_last_percent == fixed_percent)
 493                 return 0;
 494         ctx->progress_last_percent = fixed_percent;
 495
 496         /*
 497          * If we've already updated the spinner once within
 498          * the last 1/8th of a second, no point doing it
 499          * again.
 500          */
 501         gettimeofday(&tv, NULL);
 502         tick = (tv.tv_sec << 3) + (tv.tv_usec / (1000000 / 8));
 503         if ((tick == ctx->progress_last_time) &&
 504             (fixed_percent != 0) && (fixed_percent != 1000))
 505                 return 0;
 506         ctx->progress_last_time = tick;
 507
 508         /*
 509          * Advance the spinner, and note that the progress bar
 510          * will be on the screen
 511          */
 512         ctx->progress_pos = (ctx->progress_pos+1) & 3;
 513         ctx->flags |= E2F_FLAG_PROG_BAR;
 514
 515         dpywidth = 66 - strlen(label);
 516         dpywidth = 8 * (dpywidth / 8);
 517         if (dpynum)
 518                 dpywidth -= 8;
 519
 520         i = ((percent * dpywidth) + 50) / 100;
 521         printf("%s%s: |%s%s", ctx->start_meta, label,
 522                bar + (sizeof(bar) - (i+1)),
 523                spaces + (sizeof(spaces) - (dpywidth - i + 1)));
 524         if (fixed_percent == 1000)
 525                 fputc('|', stdout);
 526         else
 527                 fputc(spinner[ctx->progress_pos & 3], stdout);
 528         printf(" %4.1f%%  ", percent);
 529         if (dpynum)
 530                 printf("%u\r", dpynum);
 531         else
 532                 fputs(" \r", stdout);
 533         fputs(ctx->stop_meta, stdout);
 534
 535         if (fixed_percent == 1000)
 536                 e2fsck_clear_progbar(ctx);
 537         fflush(stdout);
 538
 539         return 0;
 540 }
 541
 542 static int e2fsck_update_progress(e2fsck_t ctx, int pass,
 543                                   unsigned long cur, unsigned long max)
 544 {
 545         char buf[1024];
 546         float percent;
 547
 548         if (pass == 0)
 549                 return 0;
 550
 551         if (ctx->progress_fd) {
 552                 snprintf(buf, sizeof(buf), "%d %lu %lu %s\n",
 553                          pass, cur, max, ctx->device_name);
 554                 write_all(ctx->progress_fd, buf, strlen(buf));
 555         } else {
 556                 percent = calc_percent(&e2fsck_tbl, pass, cur, max);
 557                 e2fsck_simple_progress(ctx, ctx->device_name,
 558                                        percent, 0);
 559         }
 560         return 0;
 561 }
 562
 563 #define PATH_SET "PATH=/sbin"
 564
 565 /*
 566  * Make sure 0,1,2 file descriptors are open, so that we don't open
 567  * the filesystem using the same file descriptor as stdout or stderr.
 568  */
 569 static void reserve_stdio_fds(void)
 570 {
 571         int     fd = 0;
 572
 573         while (fd <= 2) {
 574                 fd = open("/dev/null", O_RDWR);
 575                 if (fd < 0) {
 576                         fprintf(stderr, _("ERROR: Couldn't open "
 577                                 "/dev/null (%s)\n"),
 578                                 strerror(errno));
 579                         break;
 580                 }
 581         }
 582 }
 583
 584 #ifdef HAVE_SIGNAL_H
 585 static void signal_progress_on(int sig EXT2FS_ATTR((unused)))
 586 {
 587         e2fsck_t ctx = e2fsck_global_ctx;
 588
 589         if (!ctx)
 590                 return;
 591
 592         ctx->progress = e2fsck_update_progress;
 593 }
 594
 595 static void signal_progress_off(int sig EXT2FS_ATTR((unused)))
 596 {
 597         e2fsck_t ctx = e2fsck_global_ctx;
 598
 599         if (!ctx)
 600                 return;
 601
 602         e2fsck_clear_progbar(ctx);
 603         ctx->progress = 0;
 604 }
 605
 606 static void signal_cancel(int sig EXT2FS_ATTR((unused)))
 607 {
 608         e2fsck_t ctx = e2fsck_global_ctx;
 609
 610         if (!ctx)
 611                 exit(FSCK_CANCELED);
 612
 613         ctx->flags |= E2F_FLAG_CANCEL;
 614 }
 615 #endif
 616
 617 static void initialize_profile_options(e2fsck_t ctx)
 618 {
 619         char *tmp;
 620
 621         /* [options] shared=preserve|lost+found|delete */
 622         tmp = NULL;
 623         ctx->shared = E2F_SHARED_PRESERVE;
 624         profile_get_string(ctx->profile, "options", "shared", 0,
 625                            "preserve", &tmp);
 626         if (tmp) {
 627                 if (strcmp(tmp, "preserve") == 0)
 628                         ctx->shared = E2F_SHARED_PRESERVE;
 629                 else if (strcmp(tmp, "delete") == 0)
 630                         ctx->shared = E2F_SHARED_DELETE;
 631                 else if (strcmp(tmp, "lost+found") == 0)
 632                         ctx->shared = E2F_SHARED_LPF;
 633                 else {
 634                         com_err(ctx->program_name, 0,
 635                                 _("configuration error: 'shared=%s'"), tmp);
 636                         fatal_error(ctx, 0);
 637                 }
 638                 free(tmp);
 639         }
 640
 641         /* [options] clone=dup|zero */
 642         tmp = NULL;
 643         ctx->clone = E2F_CLONE_DUP;
 644         profile_get_string(ctx->profile, "options", "clone", 0,
 645                            "dup", &tmp);
 646         if (tmp) {
 647                 if (strcmp(tmp, "dup") == 0)
 648                         ctx->clone = E2F_CLONE_DUP;
 649                 else if (strcmp(tmp, "zero") == 0)
 650                         ctx->clone = E2F_CLONE_ZERO;
 651                 else {
 652                         com_err(ctx->program_name, 0,
 653                                 _("configuration error: 'clone=%s'"), tmp);
 654                         fatal_error(ctx, 0);
 655                 }
 656                 free(tmp);
 657         }
 658 }
 659
 660 static void parse_extended_opts(e2fsck_t ctx, const char *opts)
 661 {
 662         char    *buf, *token, *next, *p, *arg;
 663         int     ea_ver;
 664         int     extended_usage = 0;
 665
 666         buf = string_copy(ctx, opts, 0);
 667         for (token = buf; token && *token; token = next) {
 668                 p = strchr(token, ',');
 669                 next = 0;
 670                 if (p) {
 671                         *p = 0;
 672                         next = p+1;
 673                 }
 674                 arg = strchr(token, '=');
 675                 if (arg) {
 676                         *arg = 0;
 677                         arg++;
 678                 }
 679                 if (strcmp(token, "ea_ver") == 0) {
 680                         if (!arg) {
 681                                 extended_usage++;
 682                                 continue;
 683                         }
 684                         ea_ver = strtoul(arg, &p, 0);
 685                         if (*p ||
 686                             ((ea_ver != 1) && (ea_ver != 2))) {
 687                                 fprintf(stderr,
 688                                         _("Invalid EA version.\n"));
 689                                 extended_usage++;
 690                                 continue;
 691                         }
 692                         ctx->ext_attr_ver = ea_ver;
 693                 } else if (strcmp(token, "fragcheck") == 0) {
 694                         ctx->options |= E2F_OPT_FRAGCHECK;
 695                         continue;
 696                 /* -E shared=preserve|lost+found|delete */
 697                 } else if (strcmp(token, "shared") == 0) {
 698                         if (!arg) {
 699                                 extended_usage++;
 700                                 continue;
 701                         }
 702                         if (strcmp(arg, "preserve") == 0) {
 703                                 ctx->shared = E2F_SHARED_PRESERVE;
 704                         } else if (strcmp(arg, "lost+found") == 0) {
 705                                 ctx->shared = E2F_SHARED_LPF;
 706                         } else if (strcmp(arg, "delete") == 0) {
 707                                 ctx->shared = E2F_SHARED_DELETE;
 708                         } else {
 709                                 extended_usage++;
 710                                 continue;
 711                         }
 712                 /* -E clone=dup|zero */
 713                 } else if (strcmp(token, "clone") == 0) {
 714                         if (!arg) {
 715                                 extended_usage++;
 716                                 continue;
 717                         }
 718                         if (strcmp(arg, "dup") == 0) {
 719                                 ctx->clone = E2F_CLONE_DUP;
 720                         } else if (strcmp(arg, "zero") == 0) {
 721                                 ctx->clone = E2F_CLONE_ZERO;
 722                         } else {
 723                                 extended_usage++;
 724                                 continue;
 725                         }
 726                 } else if (strcmp(token, "journal_only") == 0) {
 727                         if (arg) {
 728                                 extended_usage++;
 729                                 continue;
 730                         }
 731                         ctx->options |= E2F_OPT_JOURNAL_ONLY;
 732                 } else if (strcmp(token, "discard") == 0) {
 733                         ctx->options |= E2F_OPT_DISCARD;
 734                         continue;
 735                 } else if (strcmp(token, "nodiscard") == 0) {
 736                         ctx->options &= ~E2F_OPT_DISCARD;
 737                         continue;
 738                 } else if (strcmp(token, "log_filename") == 0) {
 739                         if (!arg)
 740                                 extended_usage++;
 741                         else
 742                                 ctx->log_fn = string_copy(ctx, arg, 0);
 743                         continue;
 744                 } else {
 745                         fprintf(stderr, _("Unknown extended option: %s\n"),
 746                                 token);
 747                         extended_usage++;
 748                 }
 749         }
 750         free(buf);
 751
 752         if (extended_usage) {
 753                 fputs(("\nExtended options are separated by commas, "
 754                        "and may take an argument which\n"
 755                        "is set off by an equals ('=') sign.  "
 756                        "Valid extended options are:\n"), stderr);
 757                 fputs(("\tea_ver=<ea_version (1 or 2)>\n"), stderr);
 758                 fputs(("\tfragcheck\n"), stderr);
 759                 fputs(("\tjournal_only\n"), stderr);
 760                 fputs(("\tdiscard\n"), stderr);
 761                 fputs(("\tnodiscard\n"), stderr);
 762                 fputs(("\tshared=<preserve|lost+found|delete>\n"), stderr);
 763                 fputs(("\tclone=<dup|zero>\n"), stderr);
 764                 fputc('\n', stderr);
 765                 exit(1);
 766         }
 767 }
 768
 769 static void syntax_err_report(const char *filename, long err, int line_num)
 770 {
 771         fprintf(stderr,
 772                 _("Syntax error in e2fsck config file (%s, line #%d)\n\t%s\n"),
 773                 filename, line_num, error_message(err));
 774         exit(FSCK_ERROR);
 775 }
 776
 777 static const char *config_fn[] = { ROOT_SYSCONFDIR "/e2fsck.conf", 0 };
 778
 779 static errcode_t PRS(int argc, char *argv[], e2fsck_t *ret_ctx)
 780 {
 781         int             flush = 0;
 782         int             c, fd;
 783 #ifdef MTRACE
 784         extern void     *mallwatch;
 785 #endif
 786         e2fsck_t        ctx;
 787         errcode_t       retval;
 788 #ifdef HAVE_SIGNAL_H
 789         struct sigaction        sa;
 790 #endif
 791         char            *cp;
 792         int             res;            /* result of sscanf */
 793 #ifdef CONFIG_JBD_DEBUG
 794         char            *jbd_debug;
 795 #endif
 796
 797         retval = e2fsck_allocate_context(&ctx);
 798         if (retval)
 799                 return retval;
 800
 801         *ret_ctx = ctx;
 802
 803         setvbuf(stdout, NULL, _IONBF, BUFSIZ);
 804         setvbuf(stderr, NULL, _IONBF, BUFSIZ);
 805         if (isatty(0) && isatty(1)) {
 806                 ctx->interactive = 1;
 807         } else {
 808                 ctx->start_meta[0] = '\001';
 809                 ctx->stop_meta[0] = '\002';
 810         }
 811         memset(bar, '=', sizeof(bar)-1);
 812         memset(spaces, ' ', sizeof(spaces)-1);
 813         add_error_table(&et_ext2_error_table);
 814         add_error_table(&et_prof_error_table);
 815         blkid_get_cache(&ctx->blkid, NULL);
 816
 817         if (argc && *argv)
 818                 ctx->program_name = *argv;
 819         else
 820                 ctx->program_name = "e2fsck";
 821
 822         cp = getenv("E2FSCK_CONFIG");
 823         if (cp != NULL)
 824                 config_fn[0] = cp;
 825         profile_set_syntax_err_cb(syntax_err_report);
 826         profile_init(config_fn, &ctx->profile);
 827
 828         initialize_profile_options(ctx);
 829
 830         while ((c = getopt (argc, argv, "panyrcC:B:dE:fvtFVM:b:I:j:P:l:L:N:SsDk")) != EOF)
 831                 switch (c) {
 832                 case 'C':
 833                         ctx->progress = e2fsck_update_progress;
 834                         res = sscanf(optarg, "%d", &ctx->progress_fd);
 835                         if (res != 1)
 836                                 goto sscanf_err;
 837
 838                         if (ctx->progress_fd < 0) {
 839                                 ctx->progress = 0;
 840                                 ctx->progress_fd = ctx->progress_fd * -1;
 841                         }
 842                         if (!ctx->progress_fd)
 843                                 break;
 844                         /* Validate the file descriptor to avoid disasters */
 845                         fd = dup(ctx->progress_fd);
 846                         if (fd < 0) {
 847                                 fprintf(stderr,
 848                                 _("Error validating file descriptor %d: %s\n"),
 849                                         ctx->progress_fd,
 850                                         error_message(errno));
 851                                 fatal_error(ctx,
 852                         _("Invalid completion information file descriptor"));
 853                         } else
 854                                 close(fd);
 855                         break;
 856                 case 'D':
 857                         ctx->options |= E2F_OPT_COMPRESS_DIRS;
 858                         break;
 859                 case 'E':
 860                         parse_extended_opts(ctx, optarg);
 861                         break;
 862                 case 'p':
 863                 case 'a':
 864                         if (ctx->options & (E2F_OPT_YES|E2F_OPT_NO)) {
 865                         conflict_opt:
 866                                 fatal_error(ctx,
 867         _("Only one of the options -p/-a, -n or -y may be specified."));
 868                         }
 869                         ctx->options |= E2F_OPT_PREEN;
 870                         break;
 871                 case 'n':
 872                         if (ctx->options & (E2F_OPT_YES|E2F_OPT_PREEN))
 873                                 goto conflict_opt;
 874                         ctx->options |= E2F_OPT_NO;
 875                         break;
 876                 case 'y':
 877                         if (ctx->options & (E2F_OPT_PREEN|E2F_OPT_NO))
 878                                 goto conflict_opt;
 879                         ctx->options |= E2F_OPT_YES;
 880                         break;
 881                 case 't':
 882 #ifdef RESOURCE_TRACK
 883                         if (ctx->options & E2F_OPT_TIME)
 884                                 ctx->options |= E2F_OPT_TIME2;
 885                         else
 886                                 ctx->options |= E2F_OPT_TIME;
 887 #else
 888                         fprintf(stderr, _("The -t option is not "
 889                                 "supported on this version of e2fsck.\n"));
 890 #endif
 891                         break;
 892                 case 'c':
 893                         if (cflag++)
 894                                 ctx->options |= E2F_OPT_WRITECHECK;
 895                         ctx->options |= E2F_OPT_CHECKBLOCKS;
 896                         break;
 897                 case 'r':
 898                         /* What we do by default, anyway! */
 899                         break;
 900                 case 'b':
 901                         res = sscanf(optarg, "%llu", &ctx->use_superblock);
 902                         if (res != 1)
 903                                 goto sscanf_err;
 904                         ctx->flags |= E2F_FLAG_SB_SPECIFIED;
 905                         break;
 906                 case 'B':
 907                         ctx->blocksize = atoi(optarg);
 908                         break;
 909                 case 'I':
 910                         res = sscanf(optarg, "%d", &ctx->inode_buffer_blocks);
 911                         if (res != 1)
 912                                 goto sscanf_err;
 913                         break;
 914                 case 'j':
 915                         ctx->journal_name = blkid_get_devname(ctx->blkid,
 916                                                               optarg, NULL);
 917                         if (!ctx->journal_name) {
 918                                 com_err(ctx->program_name, 0,
 919                                         _("Unable to resolve '%s'"),
 920                                         optarg);
 921                                 fatal_error(ctx, 0);
 922                         }
 923                         break;
 924                 case 'P':
 925                         res = sscanf(optarg, "%d", &ctx->process_inode_size);
 926                         if (res != 1)
 927                                 goto sscanf_err;
 928                         break;
 929                 case 'L':
 930                         replace_bad_blocks++;
 931                 case 'l':
 932                         bad_blocks_file = string_copy(ctx, optarg, 0);
 933                         break;
 934                 case 'd':
 935                         ctx->options |= E2F_OPT_DEBUG;
 936                         break;
 937                 case 'f':
 938                         ctx->options |= E2F_OPT_FORCE;
 939                         break;
 940                 case 'F':
 941                         flush = 1;
 942                         break;
 943                 case 'v':
 944                         verbose = 1;
 945                         break;
 946                 case 'V':
 947                         show_version_only = 1;
 948                         break;
 949 #ifdef MTRACE
 950                 case 'M':
 951                         mallwatch = (void *) strtol(optarg, NULL, 0);
 952                         break;
 953 #endif
 954                 case 'N':
 955                         ctx->device_name = string_copy(ctx, optarg, 0);
 956                         break;
 957                 case 'k':
 958                         keep_bad_blocks++;
 959                         break;
 960                 default:
 961                         usage(ctx);
 962                 }
 963         if (show_version_only)
 964                 return 0;
 965         if (optind != argc - 1)
 966                 usage(ctx);
 967         if ((ctx->options & E2F_OPT_NO) &&
 968             (ctx->options & E2F_OPT_COMPRESS_DIRS)) {
 969                 com_err(ctx->program_name, 0,
 970                         _("The -n and -D options are incompatible."));
 971                 fatal_error(ctx, 0);
 972         }
 973         if ((ctx->options & E2F_OPT_NO) && cflag) {
 974                 com_err(ctx->program_name, 0,
 975                         _("The -n and -c options are incompatible."));
 976                 fatal_error(ctx, 0);
 977         }
 978         if ((ctx->options & E2F_OPT_NO) && bad_blocks_file) {
 979                 com_err(ctx->program_name, 0,
 980                         _("The -n and -l/-L options are incompatible."));
 981                 fatal_error(ctx, 0);
 982         }
 983         if (ctx->options & E2F_OPT_NO)
 984                 ctx->options |= E2F_OPT_READONLY;
 985
 986         ctx->io_options = strchr(argv[optind], '?');
 987         if (ctx->io_options)
 988                 *ctx->io_options++ = 0;
 989         ctx->filesystem_name = blkid_get_devname(ctx->blkid, argv[optind], 0);
 990         if (!ctx->filesystem_name) {
 991                 com_err(ctx->program_name, 0, _("Unable to resolve '%s'"),
 992                         argv[optind]);
 993                 fatal_error(ctx, 0);
 994         }
 995
 996         /* Turn off discard in read-only mode */
 997         if ((ctx->options & E2F_OPT_NO) &&
 998             (ctx->options & E2F_OPT_DISCARD))
 999                 ctx->options &= ~E2F_OPT_DISCARD;
1000
1001         if (flush) {
1002                 fd = open(ctx->filesystem_name, O_RDONLY, 0);
1003                 if (fd < 0) {
1004                         com_err("open", errno,
1005                                 _("while opening %s for flushing"),
1006                                 ctx->filesystem_name);
1007                         fatal_error(ctx, 0);
1008                 }
1009                 if ((retval = ext2fs_sync_device(fd, 1))) {
1010                         com_err("ext2fs_sync_device", retval,
1011                                 _("while trying to flush %s"),
1012                                 ctx->filesystem_name);
1013                         fatal_error(ctx, 0);
1014                 }
1015                 close(fd);
1016         }
1017         if (cflag && bad_blocks_file) {
1018                 fprintf(stderr, _("The -c and the -l/-L options may "
1019                                   "not be both used at the same time.\n"));
1020                 exit(FSCK_USAGE);
1021         }
1022 #ifdef HAVE_SIGNAL_H
1023         /*
1024          * Set up signal action
1025          */
1026         memset(&sa, 0, sizeof(struct sigaction));
1027         sa.sa_handler = signal_cancel;
1028         sigaction(SIGINT, &sa, 0);
1029         sigaction(SIGTERM, &sa, 0);
1030 #ifdef SA_RESTART
1031         sa.sa_flags = SA_RESTART;
1032 #endif
1033         e2fsck_global_ctx = ctx;
1034         sa.sa_handler = signal_progress_on;
1035         sigaction(SIGUSR1, &sa, 0);
1036         sa.sa_handler = signal_progress_off;
1037         sigaction(SIGUSR2, &sa, 0);
1038 #endif
1039
1040         /* Update our PATH to include /sbin if we need to run badblocks  */
1041         if (cflag) {
1042                 char *oldpath = getenv("PATH");
1043                 char *newpath;
1044                 int len = sizeof(PATH_SET) + 1;
1045
1046                 if (oldpath)
1047                         len += strlen(oldpath);
1048
1049                 newpath = malloc(len);
1050                 if (!newpath)
1051                         fatal_error(ctx, "Couldn't malloc() newpath");
1052                 strcpy(newpath, PATH_SET);
1053
1054                 if (oldpath) {
1055                         strcat(newpath, ":");
1056                         strcat(newpath, oldpath);
1057                 }
1058                 putenv(newpath);
1059         }
1060 #ifdef CONFIG_JBD_DEBUG
1061         jbd_debug = getenv("E2FSCK_JBD_DEBUG");
1062         if (jbd_debug) {
1063                 res = sscanf(jbd_debug, "%d", &journal_enable_debug);
1064                 if (res != 1) {
1065                         fprintf(stderr,
1066                                 _("E2FSCK_JBD_DEBUG \"%s\" not an integer\n\n"),
1067                                 jbd_debug);
1068                         exit (1);
1069                 }
1070         }
1071 #endif
1072         return 0;
1073
1074 sscanf_err:
1075         fprintf(stderr, _("\nInvalid non-numeric argument to -%c (\"%s\")\n\n"),
1076                 c, optarg);
1077         exit (1);
1078 }
1079
1080 static errcode_t try_open_fs(e2fsck_t ctx, int flags, io_manager io_ptr,
1081                              ext2_filsys *ret_fs)
1082 {
1083         errcode_t retval;
1084
1085         *ret_fs = NULL;
1086         if (ctx->superblock && ctx->blocksize) {
1087                 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
1088                                       flags, ctx->superblock, ctx->blocksize,
1089                                       io_ptr, ret_fs);
1090         } else if (ctx->superblock) {
1091                 int blocksize;
1092                 for (blocksize = EXT2_MIN_BLOCK_SIZE;
1093                      blocksize <= EXT2_MAX_BLOCK_SIZE; blocksize *= 2) {
1094                         if (*ret_fs) {
1095                                 ext2fs_free(*ret_fs);
1096                                 *ret_fs = NULL;
1097                         }
1098                         retval = ext2fs_open2(ctx->filesystem_name,
1099                                               ctx->io_options, flags,
1100                                               ctx->superblock, blocksize,
1101                                               io_ptr, ret_fs);
1102                         if (!retval)
1103                                 break;
1104                 }
1105         } else
1106                 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
1107                                       flags, 0, 0, io_ptr, ret_fs);
1108
1109         if (ret_fs)
1110                 e2fsck_set_bitmap_type(*ret_fs, EXT2FS_BMAP64_RBTREE,
1111                                        "default", NULL);
1112         return retval;
1113 }
1114
1115 static const char *my_ver_string = E2FSPROGS_VERSION;
1116 static const char *my_ver_date = E2FSPROGS_DATE;
1117
1118 static int e2fsck_check_mmp(ext2_filsys fs, e2fsck_t ctx)
1119 {
1120         struct mmp_struct *mmp_s;
1121         unsigned int mmp_check_interval;
1122         errcode_t retval = 0;
1123         struct problem_context pctx;
1124         unsigned int wait_time = 0;
1125
1126         clear_problem_context(&pctx);
1127         if (fs->mmp_buf == NULL) {
1128                 retval = ext2fs_get_mem(fs->blocksize, &fs->mmp_buf);
1129                 if (retval)
1130                         goto check_error;
1131         }
1132
1133         retval = ext2fs_mmp_read(fs, fs->super->s_mmp_block, fs->mmp_buf);
1134         if (retval)
1135                 goto check_error;
1136
1137         mmp_s = fs->mmp_buf;
1138
1139         mmp_check_interval = fs->super->s_mmp_update_interval;
1140         if (mmp_check_interval < EXT4_MMP_MIN_CHECK_INTERVAL)
1141                 mmp_check_interval = EXT4_MMP_MIN_CHECK_INTERVAL;
1142
1143         /*
1144          * If check_interval in MMP block is larger, use that instead of
1145          * check_interval from the superblock.
1146          */
1147         if (mmp_s->mmp_check_interval > mmp_check_interval)
1148                 mmp_check_interval = mmp_s->mmp_check_interval;
1149
1150         wait_time = mmp_check_interval * 2 + 1;
1151
1152         if (mmp_s->mmp_seq == EXT4_MMP_SEQ_CLEAN)
1153                 retval = 0;
1154         else if (mmp_s->mmp_seq == EXT4_MMP_SEQ_FSCK)
1155                 retval = EXT2_ET_MMP_FSCK_ON;
1156         else if (mmp_s->mmp_seq > EXT4_MMP_SEQ_MAX)
1157                 retval = EXT2_ET_MMP_UNKNOWN_SEQ;
1158
1159         if (retval)
1160                 goto check_error;
1161
1162         /* Print warning if e2fck will wait for more than 20 secs. */
1163         if (verbose || wait_time > EXT4_MMP_MIN_CHECK_INTERVAL * 4) {
1164                 log_out(ctx, _("MMP interval is %u seconds and total wait "
1165                                "time is %u seconds. Please wait...\n"),
1166                         mmp_check_interval, wait_time * 2);
1167         }
1168
1169         return 0;
1170
1171 check_error:
1172
1173         if (retval == EXT2_ET_MMP_BAD_BLOCK) {
1174                 if (fix_problem(ctx, PR_0_MMP_INVALID_BLK, &pctx)) {
1175                         fs->super->s_mmp_block = 0;
1176                         ext2fs_mark_super_dirty(fs);
1177                         retval = 0;
1178                 }
1179         } else if (retval == EXT2_ET_MMP_FAILED) {
1180                 com_err(ctx->program_name, retval,
1181                         _("while checking MMP block"));
1182                 dump_mmp_msg(fs->mmp_buf, NULL);
1183         } else if (retval == EXT2_ET_MMP_FSCK_ON ||
1184                    retval == EXT2_ET_MMP_UNKNOWN_SEQ) {
1185                 com_err(ctx->program_name, retval,
1186                         _("while checking MMP block"));
1187                 dump_mmp_msg(fs->mmp_buf,
1188                              _("If you are sure the filesystem is not "
1189                                "in use on any node, run:\n"
1190                                "'tune2fs -f -E clear_mmp {device}'\n"));
1191         } else if (retval == EXT2_ET_MMP_MAGIC_INVALID) {
1192                 if (fix_problem(ctx, PR_0_MMP_INVALID_MAGIC, &pctx)) {
1193                         ext2fs_mmp_clear(fs);
1194                         retval = 0;
1195                 }
1196         }
1197         return retval;
1198 }
1199
1200 int main (int argc, char *argv[])
1201 {
1202         errcode_t       retval = 0, retval2 = 0, orig_retval = 0;
1203         int             exit_value = FSCK_OK;
1204         ext2_filsys     fs = 0;
1205         io_manager      io_ptr;
1206         struct ext2_super_block *sb;
1207         const char      *lib_ver_date;
1208         int             my_ver, lib_ver;
1209         e2fsck_t        ctx;
1210         blk_t           orig_superblock;
1211         struct problem_context pctx;
1212         int flags, run_result;
1213         int journal_size;
1214         int sysval, sys_page_size = 4096;
1215         int old_bitmaps;
1216         __u32 features[3];
1217         char *cp;
1218         int qtype;  /* quota type */
1219
1220         clear_problem_context(&pctx);
1221         sigcatcher_setup();
1222 #ifdef MTRACE
1223         mtrace();
1224 #endif
1225 #ifdef MCHECK
1226         mcheck(0);
1227 #endif
1228 #ifdef ENABLE_NLS
1229         setlocale(LC_MESSAGES, "");
1230         setlocale(LC_CTYPE, "");
1231         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1232         textdomain(NLS_CAT_NAME);
1233         set_com_err_gettext(gettext);
1234 #endif
1235         my_ver = ext2fs_parse_version_string(my_ver_string);
1236         lib_ver = ext2fs_get_library_version(0, &lib_ver_date);
1237         if (my_ver > lib_ver) {
1238                 fprintf( stderr, _("Error: ext2fs library version "
1239                         "out of date!\n"));
1240                 show_version_only++;
1241         }
1242
1243         retval = PRS(argc, argv, &ctx);
1244         if (retval) {
1245                 com_err("e2fsck", retval,
1246                         _("while trying to initialize program"));
1247                 exit(FSCK_ERROR);
1248         }
1249         reserve_stdio_fds();
1250
1251         set_up_logging(ctx);
1252         if (ctx->logf) {
1253                 int i;
1254                 fputs("E2fsck run: ", ctx->logf);
1255                 for (i = 0; i < argc; i++) {
1256                         if (i)
1257                                 fputc(' ', ctx->logf);
1258                         fputs(argv[i], ctx->logf);
1259                 }
1260                 fputc('\n', ctx->logf);
1261         }
1262
1263         init_resource_track(&ctx->global_rtrack, NULL);
1264         if (!(ctx->options & E2F_OPT_PREEN) || show_version_only)
1265                 log_err(ctx, "e2fsck %s (%s)\n", my_ver_string,
1266                          my_ver_date);
1267
1268         if (show_version_only) {
1269                 log_err(ctx, _("\tUsing %s, %s\n"),
1270                         error_message(EXT2_ET_BASE), lib_ver_date);
1271                 exit(FSCK_OK);
1272         }
1273
1274         check_mount(ctx);
1275
1276         if (!(ctx->options & E2F_OPT_PREEN) &&
1277             !(ctx->options & E2F_OPT_NO) &&
1278             !(ctx->options & E2F_OPT_YES)) {
1279                 if (!ctx->interactive)
1280                         fatal_error(ctx,
1281                                     _("need terminal for interactive repairs"));
1282         }
1283         ctx->superblock = ctx->use_superblock;
1284
1285         flags = EXT2_FLAG_SKIP_MMP;
1286 restart:
1287 #ifdef CONFIG_TESTIO_DEBUG
1288         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1289                 io_ptr = test_io_manager;
1290                 test_io_backing_manager = unix_io_manager;
1291         } else
1292 #endif
1293                 io_ptr = unix_io_manager;
1294         flags |= EXT2_FLAG_NOFREE_ON_ERROR;
1295         profile_get_boolean(ctx->profile, "options", "old_bitmaps", 0, 0,
1296                             &old_bitmaps);
1297         if (!old_bitmaps)
1298                 flags |= EXT2_FLAG_64BITS;
1299         if ((ctx->options & E2F_OPT_READONLY) == 0)
1300                 flags |= EXT2_FLAG_RW | EXT2_FLAG_EXCLUSIVE;
1301
1302         retval = try_open_fs(ctx, flags, io_ptr, &fs);
1303
1304         if (!ctx->superblock && !(ctx->options & E2F_OPT_PREEN) &&
1305             !(ctx->flags & E2F_FLAG_SB_SPECIFIED) &&
1306             ((retval == EXT2_ET_BAD_MAGIC) ||
1307              (retval == EXT2_ET_CORRUPT_SUPERBLOCK) ||
1308              ((retval == 0) && (retval2 = ext2fs_check_desc(fs))))) {
1309                 if (retval) {
1310                         pctx.errcode = retval;
1311                         fix_problem(ctx, PR_0_OPEN_FAILED, &pctx);
1312                 }
1313                 if (retval2) {
1314                         pctx.errcode = retval2;
1315                         fix_problem(ctx, PR_0_CHECK_DESC_FAILED, &pctx);
1316                 }
1317                 pctx.errcode = 0;
1318                 if (retval2 == ENOMEM || retval2 == EXT2_ET_NO_MEMORY) {
1319                         retval = retval2;
1320                         goto failure;
1321                 }
1322                 if (fs->flags & EXT2_FLAG_NOFREE_ON_ERROR) {
1323                         ext2fs_free(fs);
1324                         fs = NULL;
1325                 }
1326                 if (!fs || (fs->group_desc_count > 1)) {
1327                         log_out(ctx, _("%s: %s trying backup blocks...\n"),
1328                                 ctx->program_name,
1329                                 retval ? _("Superblock invalid,") :
1330                                 _("Group descriptors look bad..."));
1331                         orig_superblock = ctx->superblock;
1332                         get_backup_sb(ctx, fs, ctx->filesystem_name, io_ptr);
1333                         if (fs)
1334                                 ext2fs_close(fs);
1335                         orig_retval = retval;
1336                         retval = try_open_fs(ctx, flags, io_ptr, &fs);
1337                         if ((orig_retval == 0) && retval != 0) {
1338                                 if (fs)
1339                                         ext2fs_close(fs);
1340                                 log_out(ctx, _("%s: %s while using the "
1341                                                "backup blocks"),
1342                                         ctx->program_name,
1343                                         error_message(retval));
1344                                 log_out(ctx, _("%s: going back to original "
1345                                                "superblock\n"),
1346                                         ctx->program_name);
1347                                 ctx->superblock = orig_superblock;
1348                                 retval = try_open_fs(ctx, flags, io_ptr, &fs);
1349                         }
1350                 }
1351         }
1352         if (((retval == EXT2_ET_UNSUPP_FEATURE) ||
1353              (retval == EXT2_ET_RO_UNSUPP_FEATURE)) &&
1354             fs && fs->super) {
1355                 sb = fs->super;
1356                 features[0] = (sb->s_feature_compat &
1357                                ~EXT2_LIB_FEATURE_COMPAT_SUPP);
1358                 features[1] = (sb->s_feature_incompat &
1359                                ~EXT2_LIB_FEATURE_INCOMPAT_SUPP);
1360                 features[2] = (sb->s_feature_ro_compat &
1361                                ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
1362                 if (features[0] || features[1] || features[2])
1363                         goto print_unsupp_features;
1364         }
1365 failure:
1366         if (retval) {
1367                 if (orig_retval)
1368                         retval = orig_retval;
1369                 com_err(ctx->program_name, retval, _("while trying to open %s"),
1370                         ctx->filesystem_name);
1371                 if (retval == EXT2_ET_REV_TOO_HIGH) {
1372                         log_out(ctx, _("The filesystem revision is apparently "
1373                                "too high for this version of e2fsck.\n"
1374                                "(Or the filesystem superblock "
1375                                "is corrupt)\n\n"));
1376                         fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
1377                 } else if (retval == EXT2_ET_SHORT_READ)
1378                         log_out(ctx, _("Could this be a zero-length "
1379                                        "partition?\n"));
1380                 else if ((retval == EPERM) || (retval == EACCES))
1381                         log_out(ctx, _("You must have %s access to the "
1382                                "filesystem or be root\n"),
1383                                (ctx->options & E2F_OPT_READONLY) ?
1384                                "r/o" : "r/w");
1385                 else if (retval == ENXIO)
1386                         log_out(ctx, _("Possibly non-existent or "
1387                                        "swap device?\n"));
1388                 else if (retval == EBUSY)
1389                         log_out(ctx, _("Filesystem mounted or opened "
1390                                  "exclusively by another program?\n"));
1391                 else if (retval == ENOENT)
1392                         log_out(ctx, _("Possibly non-existent device?\n"));
1393 #ifdef EROFS
1394                 else if (retval == EROFS)
1395                         log_out(ctx, _("Disk write-protected; use the -n "
1396                                        "option to do a read-only\n"
1397                                        "check of the device.\n"));
1398 #endif
1399                 else
1400                         fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
1401                 fatal_error(ctx, 0);
1402         }
1403         /*
1404          * We only update the master superblock because (a) paranoia;
1405          * we don't want to corrupt the backup superblocks, and (b) we
1406          * don't need to update the mount count and last checked
1407          * fields in the backup superblock (the kernel doesn't update
1408          * the backup superblocks anyway).  With newer versions of the
1409          * library this flag is set by ext2fs_open2(), but we set this
1410          * here just to be sure.  (No, we don't support e2fsck running
1411          * with some other libext2fs than the one that it was shipped
1412          * with, but just in case....)
1413          */
1414         fs->flags |= EXT2_FLAG_MASTER_SB_ONLY;
1415
1416         if (!(ctx->flags & E2F_FLAG_GOT_DEVSIZE)) {
1417                 __u32 blocksize = EXT2_BLOCK_SIZE(fs->super);
1418                 int need_restart = 0;
1419
1420                 pctx.errcode = ext2fs_get_device_size2(ctx->filesystem_name,
1421                                                        blocksize,
1422                                                        &ctx->num_blocks);
1423                 /*
1424                  * The floppy driver refuses to allow anyone else to
1425                  * open the device if has been opened with O_EXCL;
1426                  * this is unlike other block device drivers in Linux.
1427                  * To handle this, we close the filesystem and then
1428                  * reopen the filesystem after we get the device size.
1429                  */
1430                 if (pctx.errcode == EBUSY) {
1431                         ext2fs_close(fs);
1432                         need_restart++;
1433                         pctx.errcode =
1434                                 ext2fs_get_device_size2(ctx->filesystem_name,
1435                                                         blocksize,
1436                                                         &ctx->num_blocks);
1437                 }
1438                 if (pctx.errcode == EXT2_ET_UNIMPLEMENTED)
1439                         ctx->num_blocks = 0;
1440                 else if (pctx.errcode) {
1441                         fix_problem(ctx, PR_0_GETSIZE_ERROR, &pctx);
1442                         ctx->flags |= E2F_FLAG_ABORT;
1443                         fatal_error(ctx, 0);
1444                 }
1445                 ctx->flags |= E2F_FLAG_GOT_DEVSIZE;
1446                 if (need_restart)
1447                         goto restart;
1448         }
1449
1450         ctx->fs = fs;
1451         fs->priv_data = ctx;
1452         fs->now = ctx->now;
1453         sb = fs->super;
1454
1455         if (sb->s_rev_level > E2FSCK_CURRENT_REV) {
1456                 com_err(ctx->program_name, EXT2_ET_REV_TOO_HIGH,
1457                         _("while trying to open %s"),
1458                         ctx->filesystem_name);
1459         get_newer:
1460                 fatal_error(ctx, _("Get a newer version of e2fsck!"));
1461         }
1462
1463         /*
1464          * Set the device name, which is used whenever we print error
1465          * or informational messages to the user.
1466          */
1467         if (ctx->device_name == 0 &&
1468             (sb->s_volume_name[0] != 0)) {
1469                 ctx->device_name = string_copy(ctx, sb->s_volume_name,
1470                                                sizeof(sb->s_volume_name));
1471         }
1472         if (ctx->device_name == 0)
1473                 ctx->device_name = string_copy(ctx, ctx->filesystem_name, 0);
1474         for (cp = ctx->device_name; *cp; cp++)
1475                 if (isspace(*cp) || *cp == ':')
1476                         *cp = '_';
1477
1478         ehandler_init(fs->io);
1479
1480         if ((fs->super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_MMP) &&
1481             (flags & EXT2_FLAG_SKIP_MMP)) {
1482                 if (e2fsck_check_mmp(fs, ctx))
1483                         fatal_error(ctx, 0);
1484
1485                 /*
1486                  * Restart in order to reopen fs but this time start mmp.
1487                  */
1488                 ext2fs_close(fs);
1489                 ctx->fs = NULL;
1490                 flags &= ~EXT2_FLAG_SKIP_MMP;
1491                 goto restart;
1492         }
1493
1494         if (ctx->logf)
1495                 fprintf(ctx->logf, "Filesystem UUID: %s\n",
1496                         e2p_uuid2str(sb->s_uuid));
1497
1498         if ((ctx->mount_flags & EXT2_MF_MOUNTED) &&
1499             !(sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER))
1500                 goto skip_journal;
1501
1502         /*
1503          * Make sure the ext3 superblock fields are consistent.
1504          */
1505         retval = e2fsck_check_ext3_journal(ctx);
1506         if (retval) {
1507                 com_err(ctx->program_name, retval,
1508                         _("while checking ext3 journal for %s"),
1509                         ctx->device_name);
1510                 fatal_error(ctx, 0);
1511         }
1512
1513         /*
1514          * Check to see if we need to do ext3-style recovery.  If so,
1515          * do it, and then restart the fsck.
1516          */
1517         if (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) {
1518                 if (ctx->options & E2F_OPT_READONLY) {
1519                         log_out(ctx, _("Warning: skipping journal recovery "
1520                                        "because doing a read-only filesystem "
1521                                        "check.\n"));
1522                         io_channel_flush(ctx->fs->io);
1523                 } else {
1524                         if (ctx->flags & E2F_FLAG_RESTARTED) {
1525                                 /*
1526                                  * Whoops, we attempted to run the
1527                                  * journal twice.  This should never
1528                                  * happen, unless the hardware or
1529                                  * device driver is being bogus.
1530                                  */
1531                                 com_err(ctx->program_name, 0,
1532                                         _("unable to set superblock flags on %s\n"), ctx->device_name);
1533                                 fatal_error(ctx, 0);
1534                         }
1535                         retval = e2fsck_run_ext3_journal(ctx);
1536                         if (retval) {
1537                                 com_err(ctx->program_name, retval,
1538                                 _("while recovering ext3 journal of %s"),
1539                                         ctx->device_name);
1540                                 fatal_error(ctx, 0);
1541                         }
1542                         ext2fs_close(ctx->fs);
1543                         ctx->fs = 0;
1544                         ctx->flags |= E2F_FLAG_RESTARTED;
1545                         goto restart;
1546                 }
1547         }
1548
1549 skip_journal:
1550         /*
1551          * Check for compatibility with the feature sets.  We need to
1552          * be more stringent than ext2fs_open().
1553          */
1554         features[0] = sb->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP;
1555         features[1] = sb->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP;
1556         features[2] = (sb->s_feature_ro_compat &
1557                        ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
1558 print_unsupp_features:
1559         if (features[0] || features[1] || features[2]) {
1560                 int     i, j;
1561                 __u32   *mask = features, m;
1562
1563                 log_err(ctx, _("%s has unsupported feature(s):"),
1564                         ctx->filesystem_name);
1565
1566                 for (i=0; i <3; i++,mask++) {
1567                         for (j=0,m=1; j < 32; j++, m<<=1) {
1568                                 if (*mask & m)
1569                                         log_err(ctx, " %s",
1570                                                 e2p_feature2string(i, m));
1571                         }
1572                 }
1573                 log_err(ctx, "\n");
1574                 goto get_newer;
1575         }
1576 #ifdef ENABLE_COMPRESSION
1577         if (sb->s_feature_incompat & EXT2_FEATURE_INCOMPAT_COMPRESSION)
1578                 log_err(ctx, _("%s: warning: compression support "
1579                                "is experimental.\n"),
1580                         ctx->program_name);
1581 #endif
1582 #ifndef ENABLE_HTREE
1583         if (sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) {
1584                 log_err(ctx, _("%s: e2fsck not compiled with HTREE support,\n\t"
1585                           "but filesystem %s has HTREE directories.\n"),
1586                         ctx->program_name, ctx->device_name);
1587                 goto get_newer;
1588         }
1589 #endif
1590
1591         /*
1592          * If the user specified a specific superblock, presumably the
1593          * master superblock has been trashed.  So we mark the
1594          * superblock as dirty, so it can be written out.
1595          */
1596         if (ctx->superblock &&
1597             !(ctx->options & E2F_OPT_READONLY))
1598                 ext2fs_mark_super_dirty(fs);
1599
1600         /*
1601          * Calculate the number of filesystem blocks per pagesize.  If
1602          * fs->blocksize > page_size, set the number of blocks per
1603          * pagesize to 1 to avoid division by zero errors.
1604          */
1605 #ifdef _SC_PAGESIZE
1606         sysval = sysconf(_SC_PAGESIZE);
1607         if (sysval > 0)
1608                 sys_page_size = sysval;
1609 #endif /* _SC_PAGESIZE */
1610         ctx->blocks_per_page = sys_page_size / fs->blocksize;
1611         if (ctx->blocks_per_page == 0)
1612                 ctx->blocks_per_page = 1;
1613
1614         if (ctx->superblock)
1615                 set_latch_flags(PR_LATCH_RELOC, PRL_LATCHED, 0);
1616         ext2fs_mark_valid(fs);
1617         check_super_block(ctx);
1618         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1619                 fatal_error(ctx, 0);
1620         check_if_skip(ctx);
1621         check_resize_inode(ctx);
1622         if (bad_blocks_file)
1623                 read_bad_blocks_file(ctx, bad_blocks_file, replace_bad_blocks);
1624         else if (cflag)
1625                 read_bad_blocks_file(ctx, 0, !keep_bad_blocks); /* Test disk */
1626         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1627                 fatal_error(ctx, 0);
1628
1629         /*
1630          * Mark the system as valid, 'til proven otherwise
1631          */
1632         ext2fs_mark_valid(fs);
1633
1634         retval = ext2fs_read_bb_inode(fs, &fs->badblocks);
1635         if (retval) {
1636                 log_out(ctx, _("%s: %s while reading bad blocks inode\n"),
1637                         ctx->program_name, error_message(retval));
1638                 preenhalt(ctx);
1639                 log_out(ctx, _("This doesn't bode well, "
1640                                "but we'll try to go on...\n"));
1641         }
1642
1643         /*
1644          * Save the journal size in megabytes.
1645          * Try and use the journal size from the backup else let e2fsck
1646          * find the default journal size.
1647          */
1648         if (sb->s_jnl_backup_type == EXT3_JNL_BACKUP_BLOCKS)
1649                 journal_size = (sb->s_jnl_blocks[15] << (32 - 20)) |
1650                                (sb->s_jnl_blocks[16] >> 20);
1651         else
1652                 journal_size = -1;
1653
1654         if (sb->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_QUOTA) {
1655                 /* Quotas were enabled. Do quota accounting during fsck. */
1656                 if ((sb->s_usr_quota_inum && sb->s_grp_quota_inum) ||
1657                     (!sb->s_usr_quota_inum && !sb->s_grp_quota_inum))
1658                         qtype = -1;
1659                 else
1660                         qtype = sb->s_usr_quota_inum ? USRQUOTA : GRPQUOTA;
1661
1662                 quota_init_context(&ctx->qctx, ctx->fs, qtype);
1663         }
1664
1665         run_result = e2fsck_run(ctx);
1666         e2fsck_clear_progbar(ctx);
1667
1668         if (ctx->flags & E2F_FLAG_JOURNAL_INODE) {
1669                 if (fix_problem(ctx, PR_6_RECREATE_JOURNAL, &pctx)) {
1670                         if (journal_size < 1024)
1671                                 journal_size = ext2fs_default_journal_size(ext2fs_blocks_count(fs->super));
1672                         if (journal_size < 0) {
1673                                 fs->super->s_feature_compat &=
1674                                         ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
1675                                 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1676                                 log_out(ctx, "%s: Couldn't determine "
1677                                         "journal size\n", ctx->program_name);
1678                                 goto no_journal;
1679                         }
1680                         log_out(ctx, _("Creating journal (%d blocks): "),
1681                                journal_size);
1682                         fflush(stdout);
1683                         retval = ext2fs_add_journal_inode(fs,
1684                                                           journal_size, 0);
1685                         if (retval) {
1686                                 log_out(ctx, "%s: while trying to create "
1687                                         "journal\n", error_message(retval));
1688                                 goto no_journal;
1689                         }
1690                         log_out(ctx, _(" Done.\n"));
1691                         log_out(ctx, _("\n*** journal has been re-created - "
1692                                        "filesystem is now ext3 again ***\n"));
1693                 }
1694         }
1695 no_journal:
1696
1697         if (ctx->qctx) {
1698                 int i, needs_writeout;
1699                 for (i = 0; i < MAXQUOTAS; i++) {
1700                         if (qtype != -1 && qtype != i)
1701                                 continue;
1702                         needs_writeout = 0;
1703                         pctx.num = i;
1704                         retval = quota_compare_and_update(ctx->qctx, i,
1705                                                           &needs_writeout);
1706                         if ((retval || needs_writeout) &&
1707                             fix_problem(ctx, PR_6_UPDATE_QUOTAS, &pctx))
1708                                 quota_write_inode(ctx->qctx, i);
1709                 }
1710                 quota_release_context(&ctx->qctx);
1711         }
1712
1713         if (run_result == E2F_FLAG_RESTART) {
1714                 log_out(ctx, _("Restarting e2fsck from the beginning...\n"));
1715                 retval = e2fsck_reset_context(ctx);
1716                 if (retval) {
1717                         com_err(ctx->program_name, retval,
1718                                 _("while resetting context"));
1719                         fatal_error(ctx, 0);
1720                 }
1721                 ext2fs_close(fs);
1722                 goto restart;
1723         }
1724         if (run_result & E2F_FLAG_CANCEL) {
1725                 log_out(ctx, _("%s: e2fsck canceled.\n"), ctx->device_name ?
1726                         ctx->device_name : ctx->filesystem_name);
1727                 exit_value |= FSCK_CANCELED;
1728         }
1729         if (run_result & E2F_FLAG_ABORT)
1730                 fatal_error(ctx, _("aborted"));
1731         if (check_backup_super_block(ctx)) {
1732                 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1733                 ext2fs_mark_super_dirty(fs);
1734         }
1735
1736 #ifdef MTRACE
1737         mtrace_print("Cleanup");
1738 #endif
1739         if (ext2fs_test_changed(fs)) {
1740                 exit_value |= FSCK_NONDESTRUCT;
1741                 if (!(ctx->options & E2F_OPT_PREEN))
1742                         log_out(ctx, _("\n%s: ***** FILE SYSTEM WAS "
1743                                        "MODIFIED *****\n"),
1744                                 ctx->device_name);
1745                 if (ctx->mount_flags & EXT2_MF_ISROOT) {
1746                         log_out(ctx, _("%s: ***** REBOOT LINUX *****\n"),
1747                                 ctx->device_name);
1748                         exit_value |= FSCK_REBOOT;
1749                 }
1750         }
1751         if (!ext2fs_test_valid(fs) ||
1752             ((exit_value & FSCK_CANCELED) &&
1753              (sb->s_state & EXT2_ERROR_FS))) {
1754                 log_out(ctx, _("\n%s: ********** WARNING: Filesystem still has "
1755                                "errors **********\n\n"), ctx->device_name);
1756                 exit_value |= FSCK_UNCORRECTED;
1757                 exit_value &= ~FSCK_NONDESTRUCT;
1758         }
1759         if (exit_value & FSCK_CANCELED) {
1760                 int     allow_cancellation;
1761
1762                 profile_get_boolean(ctx->profile, "options",
1763                                     "allow_cancellation", 0, 0,
1764                                     &allow_cancellation);
1765                 exit_value &= ~FSCK_NONDESTRUCT;
1766                 if (allow_cancellation && ext2fs_test_valid(fs) &&
1767                     (sb->s_state & EXT2_VALID_FS) &&
1768                     !(sb->s_state & EXT2_ERROR_FS))
1769                         exit_value = 0;
1770         } else {
1771                 show_stats(ctx);
1772                 if (!(ctx->options & E2F_OPT_READONLY)) {
1773                         if (ext2fs_test_valid(fs)) {
1774                                 if (!(sb->s_state & EXT2_VALID_FS))
1775                                         exit_value |= FSCK_NONDESTRUCT;
1776                                 sb->s_state = EXT2_VALID_FS;
1777                         } else
1778                                 sb->s_state &= ~EXT2_VALID_FS;
1779                         sb->s_mnt_count = 0;
1780                         if (!(ctx->flags & E2F_FLAG_TIME_INSANE))
1781                                 sb->s_lastcheck = ctx->now;
1782                         memset(((char *) sb) + EXT4_S_ERR_START, 0,
1783                                EXT4_S_ERR_LEN);
1784                         ext2fs_mark_super_dirty(fs);
1785                 }
1786         }
1787
1788         if ((run_result & E2F_FLAG_CANCEL) == 0 &&
1789             sb->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_GDT_CSUM &&
1790             !(ctx->options & E2F_OPT_READONLY)) {
1791                 retval = ext2fs_set_gdt_csum(ctx->fs);
1792                 if (retval) {
1793                         com_err(ctx->program_name, retval,
1794                                 _("while setting block group checksum info"));
1795                         fatal_error(ctx, 0);
1796                 }
1797         }
1798
1799         e2fsck_write_bitmaps(ctx);
1800         io_channel_flush(ctx->fs->io);
1801         print_resource_track(ctx, NULL, &ctx->global_rtrack, ctx->fs->io);
1802
1803         ext2fs_close(fs);
1804         ctx->fs = NULL;
1805         free(ctx->journal_name);
1806
1807         e2fsck_free_context(ctx);
1808         remove_error_table(&et_ext2_error_table);
1809         remove_error_table(&et_prof_error_table);
1810         return exit_value;
1811 }