e2fsck/unix.c

   1 /*
   2  * unix.c - The unix-specific code for e2fsck
   3  *
   4  * Copyright (C) 1993, 1994, 1995, 1996, 1997 Theodore Ts'o.
   5  *
   6  * %Begin-Header%
   7  * This file may be redistributed under the terms of the GNU Public
   8  * License.
   9  * %End-Header%
  10  */
  11
  12 #define _XOPEN_SOURCE 600 /* for inclusion of sa_handler in Solaris */
  13
  14 #include "config.h"
  15 #include <stdio.h>
  16 #ifdef HAVE_STDLIB_H
  17 #include <stdlib.h>
  18 #endif
  19 #include <string.h>
  20 #include <fcntl.h>
  21 #include <ctype.h>
  22 #include <time.h>
  23 #ifdef HAVE_SIGNAL_H
  24 #include <signal.h>
  25 #endif
  26 #ifdef HAVE_GETOPT_H
  27 #include <getopt.h>
  28 #else
  29 extern char *optarg;
  30 extern int optind;
  31 #endif
  32 #include <unistd.h>
  33 #ifdef HAVE_ERRNO_H
  34 #include <errno.h>
  35 #endif
  36 #ifdef HAVE_SYS_IOCTL_H
  37 #include <sys/ioctl.h>
  38 #endif
  39 #ifdef HAVE_MALLOC_H
  40 #include <malloc.h>
  41 #endif
  42 #ifdef HAVE_SYS_TYPES_H
  43 #include <sys/types.h>
  44 #endif
  45 #ifdef HAVE_DIRENT_H
  46 #include <dirent.h>
  47 #endif
  48
  49 #include "e2p/e2p.h"
  50 #include "et/com_err.h"
  51 #include "e2p/e2p.h"
  52 #include "e2fsck.h"
  53 #include "problem.h"
  54 #include "../version.h"
  55
  56 /* Command line options */
  57 static int cflag;               /* check disk */
  58 static int show_version_only;
  59 static int verbose;
  60
  61 static int replace_bad_blocks;
  62 static int keep_bad_blocks;
  63 static char *bad_blocks_file;
  64
  65 e2fsck_t e2fsck_global_ctx;     /* Try your very best not to use this! */
  66
  67 #ifdef CONFIG_JBD_DEBUG         /* Enabled by configure --enable-jfs-debug */
  68 int journal_enable_debug = -1;
  69 #endif
  70
  71 static void usage(e2fsck_t ctx)
  72 {
  73         fprintf(stderr,
  74                 _("Usage: %s [-panyrcdfvtDFV] [-b superblock] [-B blocksize]\n"
  75                 "\t\t[-I inode_buffer_blocks] [-P process_inode_size]\n"
  76                 "\t\t[-l|-L bad_blocks_file] [-C fd] [-j external_journal]\n"
  77                 "\t\t[-E extended-options] device\n"),
  78                 ctx->program_name);
  79
  80         fprintf(stderr, "%s", _("\nEmergency help:\n"
  81                 " -p                   Automatic repair (no questions)\n"
  82                 " -n                   Make no changes to the filesystem\n"
  83                 " -y                   Assume \"yes\" to all questions\n"
  84                 " -c                   Check for bad blocks and add them to the badblock list\n"
  85                 " -f                   Force checking even if filesystem is marked clean\n"));
  86         fprintf(stderr, "%s", _(""
  87                 " -v                   Be verbose\n"
  88                 " -b superblock        Use alternative superblock\n"
  89                 " -B blocksize         Force blocksize when looking for superblock\n"
  90                 " -j external_journal  Set location of the external journal\n"
  91                 " -l bad_blocks_file   Add to badblocks list\n"
  92                 " -L bad_blocks_file   Set badblocks list\n"
  93                 ));
  94
  95         exit(FSCK_USAGE);
  96 }
  97
  98 static void show_stats(e2fsck_t ctx)
  99 {
 100         ext2_filsys fs = ctx->fs;
 101         ext2_ino_t inodes, inodes_used;
 102         blk64_t blocks, blocks_used;
 103         unsigned int dir_links;
 104         unsigned int num_files, num_links;
 105         __u32 *mask, m;
 106         int frag_percent_file, frag_percent_dir, frag_percent_total;
 107         int i, j, printed = 0;
 108
 109         dir_links = 2 * ctx->fs_directory_count - 1;
 110         num_files = ctx->fs_total_count - dir_links;
 111         num_links = ctx->fs_links_count - dir_links;
 112         inodes = fs->super->s_inodes_count;
 113         inodes_used = (fs->super->s_inodes_count -
 114                        fs->super->s_free_inodes_count);
 115         blocks = ext2fs_blocks_count(fs->super);
 116         blocks_used = (ext2fs_blocks_count(fs->super) -
 117                        ext2fs_free_blocks_count(fs->super));
 118
 119         frag_percent_file = (10000 * ctx->fs_fragmented) / inodes_used;
 120         frag_percent_file = (frag_percent_file + 5) / 10;
 121
 122         frag_percent_dir = (10000 * ctx->fs_fragmented_dir) / inodes_used;
 123         frag_percent_dir = (frag_percent_dir + 5) / 10;
 124
 125         frag_percent_total = ((10000 * (ctx->fs_fragmented +
 126                                         ctx->fs_fragmented_dir))
 127                               / inodes_used);
 128         frag_percent_total = (frag_percent_total + 5) / 10;
 129
 130         if (!verbose) {
 131                 log_out(ctx, _("%s: %u/%u files (%0d.%d%% non-contiguous), "
 132                                "%llu/%llu blocks\n"),
 133                         ctx->device_name, inodes_used, inodes,
 134                         frag_percent_total / 10, frag_percent_total % 10,
 135                         blocks_used, blocks);
 136                 return;
 137         }
 138         profile_get_boolean(ctx->profile, "options", "report_features", 0, 0,
 139                             &i);
 140         if (verbose && i) {
 141                 log_out(ctx, "\nFilesystem features:");
 142                 mask = &ctx->fs->super->s_feature_compat;
 143                 for (i = 0; i < 3; i++, mask++) {
 144                         for (j = 0, m = 1; j < 32; j++, m <<= 1) {
 145                                 if (*mask & m) {
 146                                         log_out(ctx, " %s",
 147                                                 e2p_feature2string(i, m));
 148                                         printed++;
 149                                 }
 150                         }
 151                 }
 152                 if (printed == 0)
 153                         log_out(ctx, " (none)");
 154                 log_out(ctx, "\n");
 155         }
 156
 157         log_out(ctx, P_("\n%12u inode used (%2.2f%%, out of %u)\n",
 158                         "\n%12u inodes used (%2.2f%%, out of %u)\n",
 159                         inodes_used), inodes_used,
 160                 100.0 * inodes_used / inodes, inodes);
 161         log_out(ctx, P_("%12u non-contiguous file (%0d.%d%%)\n",
 162                         "%12u non-contiguous files (%0d.%d%%)\n",
 163                         ctx->fs_fragmented),
 164                 ctx->fs_fragmented, frag_percent_file / 10,
 165                 frag_percent_file % 10);
 166         log_out(ctx, P_("%12u non-contiguous directory (%0d.%d%%)\n",
 167                         "%12u non-contiguous directories (%0d.%d%%)\n",
 168                         ctx->fs_fragmented_dir),
 169                 ctx->fs_fragmented_dir, frag_percent_dir / 10,
 170                 frag_percent_dir % 10);
 171         log_out(ctx, _("             # of inodes with ind/dind/tind blocks: "
 172                        "%u/%u/%u\n"),
 173                 ctx->fs_ind_count, ctx->fs_dind_count, ctx->fs_tind_count);
 174
 175         for (j=MAX_EXTENT_DEPTH_COUNT-1; j >=0; j--)
 176                 if (ctx->extent_depth_count[j])
 177                         break;
 178         if (++j) {
 179                 log_out(ctx, "%s", _("             Extent depth histogram: "));
 180                 for (i=0; i < j; i++) {
 181                         if (i)
 182                                 fputc('/', stdout);
 183                         log_out(ctx, "%u", ctx->extent_depth_count[i]);
 184                 }
 185                 log_out(ctx, "\n");
 186         }
 187
 188         log_out(ctx, P_("%12llu block used (%2.2f%%, out of %llu)\n",
 189                         "%12llu blocks used (%2.2f%%, out of %llu)\n",
 190                    blocks_used),
 191                 blocks_used, 100.0 * blocks_used / blocks, blocks);
 192         log_out(ctx, P_("%12u bad block\n", "%12u bad blocks\n",
 193                         ctx->fs_badblocks_count), ctx->fs_badblocks_count);
 194         log_out(ctx, P_("%12u large file\n", "%12u large files\n",
 195                         ctx->large_files), ctx->large_files);
 196         log_out(ctx, P_("\n%12u regular file\n", "\n%12u regular files\n",
 197                         ctx->fs_regular_count), ctx->fs_regular_count);
 198         log_out(ctx, P_("%12u directory\n", "%12u directories\n",
 199                         ctx->fs_directory_count), ctx->fs_directory_count);
 200         log_out(ctx, P_("%12u character device file\n",
 201                         "%12u character device files\n", ctx->fs_chardev_count),
 202                 ctx->fs_chardev_count);
 203         log_out(ctx, P_("%12u block device file\n", "%12u block device files\n",
 204                         ctx->fs_blockdev_count), ctx->fs_blockdev_count);
 205         log_out(ctx, P_("%12u fifo\n", "%12u fifos\n", ctx->fs_fifo_count),
 206                 ctx->fs_fifo_count);
 207         log_out(ctx, P_("%12u link\n", "%12u links\n", num_links),
 208                 ctx->fs_links_count - dir_links);
 209         log_out(ctx, P_("%12u symbolic link", "%12u symbolic links",
 210                         ctx->fs_symlinks_count), ctx->fs_symlinks_count);
 211         log_out(ctx, P_(" (%u fast symbolic link)\n",
 212                         " (%u fast symbolic links)\n",
 213                         ctx->fs_fast_symlinks_count),
 214                 ctx->fs_fast_symlinks_count);
 215         log_out(ctx, P_("%12u socket\n", "%12u sockets\n",
 216                         ctx->fs_sockets_count),
 217                 ctx->fs_sockets_count);
 218         log_out(ctx, "------------\n");
 219         log_out(ctx, P_("%12u file\n", "%12u files\n", num_files),
 220                 num_files);
 221 }
 222
 223 static void check_mount(e2fsck_t ctx)
 224 {
 225         errcode_t       retval;
 226         int             cont;
 227
 228         retval = ext2fs_check_if_mounted(ctx->filesystem_name,
 229                                          &ctx->mount_flags);
 230         if (retval) {
 231                 com_err("ext2fs_check_if_mount", retval,
 232                         _("while determining whether %s is mounted."),
 233                         ctx->filesystem_name);
 234                 return;
 235         }
 236
 237         /*
 238          * If the filesystem isn't mounted, or it's the root
 239          * filesystem and it's mounted read-only, and we're not doing
 240          * a read/write check, then everything's fine.
 241          */
 242         if ((!(ctx->mount_flags & (EXT2_MF_MOUNTED | EXT2_MF_BUSY))) ||
 243             ((ctx->mount_flags & EXT2_MF_ISROOT) &&
 244              (ctx->mount_flags & EXT2_MF_READONLY) &&
 245              !(ctx->options & E2F_OPT_WRITECHECK)))
 246                 return;
 247
 248         if (((ctx->options & E2F_OPT_READONLY) ||
 249              ((ctx->options & E2F_OPT_FORCE) &&
 250               (ctx->mount_flags & EXT2_MF_READONLY))) &&
 251             !(ctx->options & E2F_OPT_WRITECHECK)) {
 252                 if (ctx->mount_flags & EXT2_MF_MOUNTED)
 253                         log_out(ctx, _("Warning!  %s is mounted.\n"),
 254                                         ctx->filesystem_name);
 255                 else
 256                         log_out(ctx, _("Warning!  %s is in use.\n"),
 257                                         ctx->filesystem_name);
 258                 return;
 259         }
 260
 261         if (ctx->mount_flags & EXT2_MF_MOUNTED)
 262                 log_out(ctx, _("%s is mounted.\n"), ctx->filesystem_name);
 263         else
 264                 log_out(ctx, _("%s is in use.\n"), ctx->filesystem_name);
 265         if (!ctx->interactive || ctx->mount_flags & EXT2_MF_BUSY)
 266                 fatal_error(ctx, _("Cannot continue, aborting.\n\n"));
 267         puts("\007\007\007\007");
 268         log_out(ctx, "%s", _("\n\nWARNING!!!  "
 269                        "The filesystem is mounted.   "
 270                        "If you continue you ***WILL***\n"
 271                        "cause ***SEVERE*** filesystem damage.\n\n"));
 272         puts("\007\007\007");
 273         cont = ask_yn(ctx, _("Do you really want to continue"), 0);
 274         if (!cont) {
 275                 printf("%s", _("check aborted.\n"));
 276                 exit (0);
 277         }
 278         return;
 279 }
 280
 281 static int is_on_batt(void)
 282 {
 283         FILE    *f;
 284         DIR     *d;
 285         char    tmp[80], tmp2[80], fname[80];
 286         unsigned int    acflag;
 287         struct dirent*  de;
 288
 289         f = fopen("/sys/class/power_supply/AC/online", "r");
 290         if (f) {
 291                 if (fscanf(f, "%u\n", &acflag) == 1) {
 292                         fclose(f);
 293                         return (!acflag);
 294                 }
 295                 fclose(f);
 296         }
 297         f = fopen("/proc/apm", "r");
 298         if (f) {
 299                 if (fscanf(f, "%s %s %s %x", tmp, tmp, tmp, &acflag) != 4)
 300                         acflag = 1;
 301                 fclose(f);
 302                 return (acflag != 1);
 303         }
 304         d = opendir("/proc/acpi/ac_adapter");
 305         if (d) {
 306                 while ((de=readdir(d)) != NULL) {
 307                         if (!strncmp(".", de->d_name, 1))
 308                                 continue;
 309                         snprintf(fname, 80, "/proc/acpi/ac_adapter/%s/state",
 310                                  de->d_name);
 311                         f = fopen(fname, "r");
 312                         if (!f)
 313                                 continue;
 314                         if (fscanf(f, "%s %s", tmp2, tmp) != 2)
 315                                 tmp[0] = 0;
 316                         fclose(f);
 317                         if (strncmp(tmp, "off-line", 8) == 0) {
 318                                 closedir(d);
 319                                 return 1;
 320                         }
 321                 }
 322                 closedir(d);
 323         }
 324         return 0;
 325 }
 326
 327 /*
 328  * This routine checks to see if a filesystem can be skipped; if so,
 329  * it will exit with E2FSCK_OK.  Under some conditions it will print a
 330  * message explaining why a check is being forced.
 331  */
 332 static void check_if_skip(e2fsck_t ctx)
 333 {
 334         ext2_filsys fs = ctx->fs;
 335         struct problem_context pctx;
 336         const char *reason = NULL;
 337         unsigned int reason_arg = 0;
 338         long next_check;
 339         int batt = is_on_batt();
 340         int defer_check_on_battery;
 341         int broken_system_clock;
 342         time_t lastcheck;
 343
 344         if (ctx->flags & E2F_FLAG_PROBLEMS_FIXED)
 345                 return;
 346
 347         profile_get_boolean(ctx->profile, "options", "broken_system_clock",
 348                             0, 0, &broken_system_clock);
 349         if (ctx->flags & E2F_FLAG_TIME_INSANE)
 350                 broken_system_clock = 1;
 351         profile_get_boolean(ctx->profile, "options",
 352                             "defer_check_on_battery", 0, 1,
 353                             &defer_check_on_battery);
 354         if (!defer_check_on_battery)
 355                 batt = 0;
 356
 357         if ((ctx->options & E2F_OPT_FORCE) || bad_blocks_file || cflag)
 358                 return;
 359
 360         if (ctx->options & E2F_OPT_JOURNAL_ONLY)
 361                 goto skip;
 362
 363         lastcheck = fs->super->s_lastcheck;
 364         if (lastcheck > ctx->now)
 365                 lastcheck -= ctx->time_fudge;
 366         if ((fs->super->s_state & EXT2_ERROR_FS) ||
 367             !ext2fs_test_valid(fs))
 368                 reason = _(" contains a file system with errors");
 369         else if ((fs->super->s_state & EXT2_VALID_FS) == 0)
 370                 reason = _(" was not cleanly unmounted");
 371         else if (check_backup_super_block(ctx))
 372                 reason = _(" primary superblock features different from backup");
 373         else if ((fs->super->s_max_mnt_count > 0) &&
 374                  (fs->super->s_mnt_count >=
 375                   (unsigned) fs->super->s_max_mnt_count)) {
 376                 reason = _(" has been mounted %u times without being checked");
 377                 reason_arg = fs->super->s_mnt_count;
 378                 if (batt && (fs->super->s_mnt_count <
 379                              (unsigned) fs->super->s_max_mnt_count*2))
 380                         reason = 0;
 381         } else if (!broken_system_clock && fs->super->s_checkinterval &&
 382                    (ctx->now < lastcheck)) {
 383                 reason = _(" has filesystem last checked time in the future");
 384                 if (batt)
 385                         reason = 0;
 386         } else if (!broken_system_clock && fs->super->s_checkinterval &&
 387                    ((ctx->now - lastcheck) >=
 388                     ((time_t) fs->super->s_checkinterval))) {
 389                 reason = _(" has gone %u days without being checked");
 390                 reason_arg = (ctx->now - fs->super->s_lastcheck)/(3600*24);
 391                 if (batt && ((ctx->now - fs->super->s_lastcheck) <
 392                              fs->super->s_checkinterval*2))
 393                         reason = 0;
 394         }
 395         if (reason) {
 396                 log_out(ctx, "%s", ctx->device_name);
 397                 log_out(ctx, reason, reason_arg);
 398                 log_out(ctx, "%s", _(", check forced.\n"));
 399                 return;
 400         }
 401
 402         /*
 403          * Update the global counts from the block group counts.  This
 404          * is needed since modern kernels don't update the global
 405          * counts so as to avoid locking the entire file system.  So
 406          * if the filesystem is not unmounted cleanly, the global
 407          * counts may not be accurate.  Update them here if we can,
 408          * for the benefit of users who might examine the file system
 409          * using dumpe2fs.  (This is for cosmetic reasons only.)
 410          */
 411         clear_problem_context(&pctx);
 412         pctx.ino = fs->super->s_free_inodes_count;
 413         pctx.ino2 = ctx->free_inodes;
 414         if ((pctx.ino != pctx.ino2) &&
 415             !(ctx->options & E2F_OPT_READONLY) &&
 416             fix_problem(ctx, PR_0_FREE_INODE_COUNT, &pctx)) {
 417                 fs->super->s_free_inodes_count = ctx->free_inodes;
 418                 ext2fs_mark_super_dirty(fs);
 419         }
 420         clear_problem_context(&pctx);
 421         pctx.blk = ext2fs_free_blocks_count(fs->super);
 422         pctx.blk2 = ctx->free_blocks;
 423         if ((pctx.blk != pctx.blk2) &&
 424             !(ctx->options & E2F_OPT_READONLY) &&
 425             fix_problem(ctx, PR_0_FREE_BLOCK_COUNT, &pctx)) {
 426                 ext2fs_free_blocks_count_set(fs->super, ctx->free_blocks);
 427                 ext2fs_mark_super_dirty(fs);
 428         }
 429
 430         /* Print the summary message when we're skipping a full check */
 431         log_out(ctx, _("%s: clean, %u/%u files, %llu/%llu blocks"),
 432                 ctx->device_name,
 433                 fs->super->s_inodes_count - fs->super->s_free_inodes_count,
 434                 fs->super->s_inodes_count,
 435                 ext2fs_blocks_count(fs->super) -
 436                 ext2fs_free_blocks_count(fs->super),
 437                 ext2fs_blocks_count(fs->super));
 438         next_check = 100000;
 439         if (fs->super->s_max_mnt_count > 0) {
 440                 next_check = fs->super->s_max_mnt_count - fs->super->s_mnt_count;
 441                 if (next_check <= 0)
 442                         next_check = 1;
 443         }
 444         if (!broken_system_clock && fs->super->s_checkinterval &&
 445             ((ctx->now - fs->super->s_lastcheck) >= fs->super->s_checkinterval))
 446                 next_check = 1;
 447         if (next_check <= 5) {
 448                 if (next_check == 1) {
 449                         if (batt)
 450                                 log_out(ctx, "%s",
 451                                         _(" (check deferred; on battery)"));
 452                         else
 453                                 log_out(ctx, "%s",
 454                                         _(" (check after next mount)"));
 455                 } else
 456                         log_out(ctx, _(" (check in %ld mounts)"),
 457                                 next_check);
 458         }
 459         log_out(ctx, "\n");
 460 skip:
 461         ext2fs_close_free(&ctx->fs);
 462         e2fsck_free_context(ctx);
 463         exit(FSCK_OK);
 464 }
 465
 466 /*
 467  * For completion notice
 468  */
 469 struct percent_tbl {
 470         int     max_pass;
 471         int     table[32];
 472 };
 473 static struct percent_tbl e2fsck_tbl = {
 474         5, { 0, 70, 90, 92,  95, 100 }
 475 };
 476 static char bar[128], spaces[128];
 477
 478 static float calc_percent(struct percent_tbl *tbl, int pass, int curr,
 479                           int max)
 480 {
 481         float   percent;
 482
 483         if (pass <= 0)
 484                 return 0.0;
 485         if (pass > tbl->max_pass || max == 0)
 486                 return 100.0;
 487         percent = ((float) curr) / ((float) max);
 488         return ((percent * (tbl->table[pass] - tbl->table[pass-1]))
 489                 + tbl->table[pass-1]);
 490 }
 491
 492 void e2fsck_clear_progbar(e2fsck_t ctx)
 493 {
 494         if (!(ctx->flags & E2F_FLAG_PROG_BAR))
 495                 return;
 496
 497         printf("%s%s\r%s", ctx->start_meta, spaces + (sizeof(spaces) - 80),
 498                ctx->stop_meta);
 499         fflush(stdout);
 500         ctx->flags &= ~E2F_FLAG_PROG_BAR;
 501 }
 502
 503 int e2fsck_simple_progress(e2fsck_t ctx, const char *label, float percent,
 504                            unsigned int dpynum)
 505 {
 506         static const char spinner[] = "\\|/-";
 507         int     i;
 508         unsigned int    tick;
 509         struct timeval  tv;
 510         int dpywidth;
 511         int fixed_percent;
 512
 513         if (ctx->flags & E2F_FLAG_PROG_SUPPRESS)
 514                 return 0;
 515
 516         /*
 517          * Calculate the new progress position.  If the
 518          * percentage hasn't changed, then we skip out right
 519          * away.
 520          */
 521         fixed_percent = (int) ((10 * percent) + 0.5);
 522         if (ctx->progress_last_percent == fixed_percent)
 523                 return 0;
 524         ctx->progress_last_percent = fixed_percent;
 525
 526         /*
 527          * If we've already updated the spinner once within
 528          * the last 1/8th of a second, no point doing it
 529          * again.
 530          */
 531         gettimeofday(&tv, NULL);
 532         tick = (tv.tv_sec << 3) + (tv.tv_usec / (1000000 / 8));
 533         if ((tick == ctx->progress_last_time) &&
 534             (fixed_percent != 0) && (fixed_percent != 1000))
 535                 return 0;
 536         ctx->progress_last_time = tick;
 537
 538         /*
 539          * Advance the spinner, and note that the progress bar
 540          * will be on the screen
 541          */
 542         ctx->progress_pos = (ctx->progress_pos+1) & 3;
 543         ctx->flags |= E2F_FLAG_PROG_BAR;
 544
 545         dpywidth = 66 - strlen(label);
 546         dpywidth = 8 * (dpywidth / 8);
 547         if (dpynum)
 548                 dpywidth -= 8;
 549
 550         i = ((percent * dpywidth) + 50) / 100;
 551         printf("%s%s: |%s%s", ctx->start_meta, label,
 552                bar + (sizeof(bar) - (i+1)),
 553                spaces + (sizeof(spaces) - (dpywidth - i + 1)));
 554         if (fixed_percent == 1000)
 555                 fputc('|', stdout);
 556         else
 557                 fputc(spinner[ctx->progress_pos & 3], stdout);
 558         printf(" %4.1f%%  ", percent);
 559         if (dpynum)
 560                 printf("%u\r", dpynum);
 561         else
 562                 fputs(" \r", stdout);
 563         fputs(ctx->stop_meta, stdout);
 564
 565         if (fixed_percent == 1000)
 566                 e2fsck_clear_progbar(ctx);
 567         fflush(stdout);
 568
 569         return 0;
 570 }
 571
 572 static int e2fsck_update_progress(e2fsck_t ctx, int pass,
 573                                   unsigned long cur, unsigned long max)
 574 {
 575         char buf[1024];
 576         float percent;
 577
 578         if (pass == 0)
 579                 return 0;
 580
 581         if (ctx->progress_fd) {
 582                 snprintf(buf, sizeof(buf), "%d %lu %lu %s\n",
 583                          pass, cur, max, ctx->device_name);
 584                 write_all(ctx->progress_fd, buf, strlen(buf));
 585         } else {
 586                 percent = calc_percent(&e2fsck_tbl, pass, cur, max);
 587                 e2fsck_simple_progress(ctx, ctx->device_name,
 588                                        percent, 0);
 589         }
 590         return 0;
 591 }
 592
 593 #define PATH_SET "PATH=/sbin"
 594
 595 /*
 596  * Make sure 0,1,2 file descriptors are open, so that we don't open
 597  * the filesystem using the same file descriptor as stdout or stderr.
 598  */
 599 static void reserve_stdio_fds(void)
 600 {
 601         int     fd = 0;
 602
 603         while (fd <= 2) {
 604                 fd = open("/dev/null", O_RDWR);
 605                 if (fd < 0) {
 606                         fprintf(stderr, _("ERROR: Couldn't open "
 607                                 "/dev/null (%s)\n"),
 608                                 strerror(errno));
 609                         break;
 610                 }
 611         }
 612 }
 613
 614 #ifdef HAVE_SIGNAL_H
 615 static void signal_progress_on(int sig EXT2FS_ATTR((unused)))
 616 {
 617         e2fsck_t ctx = e2fsck_global_ctx;
 618
 619         if (!ctx)
 620                 return;
 621
 622         ctx->progress = e2fsck_update_progress;
 623 }
 624
 625 static void signal_progress_off(int sig EXT2FS_ATTR((unused)))
 626 {
 627         e2fsck_t ctx = e2fsck_global_ctx;
 628
 629         if (!ctx)
 630                 return;
 631
 632         e2fsck_clear_progbar(ctx);
 633         ctx->progress = 0;
 634 }
 635
 636 static void signal_cancel(int sig EXT2FS_ATTR((unused)))
 637 {
 638         e2fsck_t ctx = e2fsck_global_ctx;
 639
 640         if (!ctx)
 641                 exit(FSCK_CANCELED);
 642
 643         ctx->flags |= E2F_FLAG_CANCEL;
 644 }
 645 #endif
 646
 647 static void initialize_profile_options(e2fsck_t ctx)
 648 {
 649         char *tmp;
 650
 651         /* [options] shared=preserve|lost+found|delete */
 652         tmp = NULL;
 653         ctx->shared = E2F_SHARED_PRESERVE;
 654         profile_get_string(ctx->profile, "options", "shared", 0,
 655                            "preserve", &tmp);
 656         if (tmp) {
 657                 if (strcmp(tmp, "preserve") == 0)
 658                         ctx->shared = E2F_SHARED_PRESERVE;
 659                 else if (strcmp(tmp, "delete") == 0)
 660                         ctx->shared = E2F_SHARED_DELETE;
 661                 else if (strcmp(tmp, "lost+found") == 0)
 662                         ctx->shared = E2F_SHARED_LPF;
 663                 else {
 664                         com_err(ctx->program_name, 0,
 665                                 _("configuration error: 'shared=%s'"), tmp);
 666                         fatal_error(ctx, 0);
 667                 }
 668                 free(tmp);
 669         }
 670
 671         /* [options] clone=dup|zero */
 672         tmp = NULL;
 673         ctx->clone = E2F_CLONE_DUP;
 674         profile_get_string(ctx->profile, "options", "clone", 0,
 675                            "dup", &tmp);
 676         if (tmp) {
 677                 if (strcmp(tmp, "dup") == 0)
 678                         ctx->clone = E2F_CLONE_DUP;
 679                 else if (strcmp(tmp, "zero") == 0)
 680                         ctx->clone = E2F_CLONE_ZERO;
 681                 else {
 682                         com_err(ctx->program_name, 0,
 683                                 _("configuration error: 'clone=%s'"), tmp);
 684                         fatal_error(ctx, 0);
 685                 }
 686                 free(tmp);
 687         }
 688 }
 689
 690 static void parse_extended_opts(e2fsck_t ctx, const char *opts)
 691 {
 692         char    *buf, *token, *next, *p, *arg;
 693         int     ea_ver;
 694         int     extended_usage = 0;
 695
 696         buf = string_copy(ctx, opts, 0);
 697         for (token = buf; token && *token; token = next) {
 698                 p = strchr(token, ',');
 699                 next = 0;
 700                 if (p) {
 701                         *p = 0;
 702                         next = p+1;
 703                 }
 704                 arg = strchr(token, '=');
 705                 if (arg) {
 706                         *arg = 0;
 707                         arg++;
 708                 }
 709                 if (strcmp(token, "ea_ver") == 0) {
 710                         if (!arg) {
 711                                 extended_usage++;
 712                                 continue;
 713                         }
 714                         ea_ver = strtoul(arg, &p, 0);
 715                         if (*p ||
 716                             ((ea_ver != 1) && (ea_ver != 2))) {
 717                                 fprintf(stderr, "%s",
 718                                         _("Invalid EA version.\n"));
 719                                 extended_usage++;
 720                                 continue;
 721                         }
 722                         ctx->ext_attr_ver = ea_ver;
 723                 } else if (strcmp(token, "fragcheck") == 0) {
 724                         ctx->options |= E2F_OPT_FRAGCHECK;
 725                         continue;
 726                 /* -E shared=preserve|lost+found|delete */
 727                 } else if (strcmp(token, "shared") == 0) {
 728                         if (!arg) {
 729                                 extended_usage++;
 730                                 continue;
 731                         }
 732                         if (strcmp(arg, "preserve") == 0) {
 733                                 ctx->shared = E2F_SHARED_PRESERVE;
 734                         } else if (strcmp(arg, "lost+found") == 0) {
 735                                 ctx->shared = E2F_SHARED_LPF;
 736                         } else if (strcmp(arg, "delete") == 0) {
 737                                 ctx->shared = E2F_SHARED_DELETE;
 738                         } else {
 739                                 extended_usage++;
 740                                 continue;
 741                         }
 742                 /* -E clone=dup|zero */
 743                 } else if (strcmp(token, "clone") == 0) {
 744                         if (!arg) {
 745                                 extended_usage++;
 746                                 continue;
 747                         }
 748                         if (strcmp(arg, "dup") == 0) {
 749                                 ctx->clone = E2F_CLONE_DUP;
 750                         } else if (strcmp(arg, "zero") == 0) {
 751                                 ctx->clone = E2F_CLONE_ZERO;
 752                         } else {
 753                                 extended_usage++;
 754                                 continue;
 755                         }
 756                 } else if (strcmp(token, "expand_extra_isize") == 0) {
 757                         ctx->flags |= E2F_FLAG_EXPAND_EISIZE;
 758                         if (arg) {
 759                                 extended_usage++;
 760                                 continue;
 761                         }
 762                 /* -E inode_badness_threshold=<value> */
 763                 } else if (strcmp(token, "inode_badness_threshold") == 0) {
 764                         if (!arg) {
 765                                 extended_usage++;
 766                                 continue;
 767                         }
 768                         ctx->inode_badness_threshold = strtoul(arg, &p, 0);
 769                         if (*p != '\0' || ctx->inode_badness_threshold > 200) {
 770                                 fprintf(stderr, _("Invalid badness value.\n"));
 771                                 extended_usage++;
 772                                 continue;
 773                         }
 774                 } else if (strcmp(token, "journal_only") == 0) {
 775                         if (arg) {
 776                                 extended_usage++;
 777                                 continue;
 778                         }
 779                         ctx->options |= E2F_OPT_JOURNAL_ONLY;
 780                 } else if (strcmp(token, "discard") == 0) {
 781                         ctx->options |= E2F_OPT_DISCARD;
 782                         continue;
 783                 } else if (strcmp(token, "nodiscard") == 0) {
 784                         ctx->options &= ~E2F_OPT_DISCARD;
 785                         continue;
 786                 } else if (strcmp(token, "log_filename") == 0) {
 787                         if (!arg)
 788                                 extended_usage++;
 789                         else
 790                                 ctx->log_fn = string_copy(ctx, arg, 0);
 791                         continue;
 792                 } else {
 793                         fprintf(stderr, _("Unknown extended option: %s\n"),
 794                                 token);
 795                         extended_usage++;
 796                 }
 797         }
 798         free(buf);
 799
 800         if (extended_usage) {
 801                 fputs(("\nExtended options are separated by commas, "
 802                        "and may take an argument which\n"
 803                        "is set off by an equals ('=') sign.  "
 804                        "Valid extended options are:\n"), stderr);
 805                 fputs(("\tea_ver=<ea_version (1 or 2)>\n"), stderr);
 806                 fputs(("\tfragcheck\n"), stderr);
 807                 fputs(("\tjournal_only\n"), stderr);
 808                 fputs(("\tdiscard\n"), stderr);
 809                 fputs(("\tnodiscard\n"), stderr);
 810                 fputs(("\tshared=<preserve|lost+found|delete>\n"), stderr);
 811                 fputs(("\tclone=<dup|zero>\n"), stderr);
 812                 fputs(("\texpand_extra_isize\n"), stderr);
 813                 fputs(("\tinode_badness_threhold=(value)\n"), stderr);
 814                 fputc('\n', stderr);
 815                 exit(1);
 816         }
 817 }
 818
 819 static void syntax_err_report(const char *filename, long err, int line_num)
 820 {
 821         fprintf(stderr,
 822                 _("Syntax error in e2fsck config file (%s, line #%d)\n\t%s\n"),
 823                 filename, line_num, error_message(err));
 824         exit(FSCK_ERROR);
 825 }
 826
 827 static const char *config_fn[] = { ROOT_SYSCONFDIR "/e2fsck.conf", 0 };
 828
 829 static errcode_t PRS(int argc, char *argv[], e2fsck_t *ret_ctx)
 830 {
 831         int             flush = 0;
 832         int             c, fd;
 833 #ifdef MTRACE
 834         extern void     *mallwatch;
 835 #endif
 836         e2fsck_t        ctx;
 837         errcode_t       retval;
 838 #ifdef HAVE_SIGNAL_H
 839         struct sigaction        sa;
 840 #endif
 841         char            *cp;
 842         int             res;            /* result of sscanf */
 843 #ifdef CONFIG_JBD_DEBUG
 844         char            *jbd_debug;
 845 #endif
 846
 847         retval = e2fsck_allocate_context(&ctx);
 848         if (retval)
 849                 return retval;
 850
 851         *ret_ctx = ctx;
 852         e2fsck_global_ctx = ctx;
 853
 854         setvbuf(stdout, NULL, _IONBF, BUFSIZ);
 855         setvbuf(stderr, NULL, _IONBF, BUFSIZ);
 856         if (isatty(0) && isatty(1)) {
 857                 ctx->interactive = 1;
 858         } else {
 859                 ctx->start_meta[0] = '\001';
 860                 ctx->stop_meta[0] = '\002';
 861         }
 862         memset(bar, '=', sizeof(bar)-1);
 863         memset(spaces, ' ', sizeof(spaces)-1);
 864         add_error_table(&et_ext2_error_table);
 865         add_error_table(&et_prof_error_table);
 866         blkid_get_cache(&ctx->blkid, NULL);
 867
 868         if (argc && *argv)
 869                 ctx->program_name = *argv;
 870         else
 871                 ctx->program_name = "e2fsck";
 872
 873         cp = getenv("E2FSCK_CONFIG");
 874         if (cp != NULL)
 875                 config_fn[0] = cp;
 876         profile_set_syntax_err_cb(syntax_err_report);
 877         profile_init(config_fn, &ctx->profile);
 878
 879         initialize_profile_options(ctx);
 880
 881         ctx->inode_badness_threshold = BADNESS_THRESHOLD;
 882
 883         while ((c = getopt (argc, argv, "panyrcC:B:dE:fvtFVM:b:I:j:P:l:L:N:SsDk")) != EOF)
 884                 switch (c) {
 885                 case 'C':
 886                         ctx->progress = e2fsck_update_progress;
 887                         res = sscanf(optarg, "%d", &ctx->progress_fd);
 888                         if (res != 1)
 889                                 goto sscanf_err;
 890
 891                         if (ctx->progress_fd < 0) {
 892                                 ctx->progress = 0;
 893                                 ctx->progress_fd = ctx->progress_fd * -1;
 894                         }
 895                         if (!ctx->progress_fd)
 896                                 break;
 897                         /* Validate the file descriptor to avoid disasters */
 898                         fd = dup(ctx->progress_fd);
 899                         if (fd < 0) {
 900                                 fprintf(stderr,
 901                                 _("Error validating file descriptor %d: %s\n"),
 902                                         ctx->progress_fd,
 903                                         error_message(errno));
 904                                 fatal_error(ctx,
 905                         _("Invalid completion information file descriptor"));
 906                         } else
 907                                 close(fd);
 908                         break;
 909                 case 'D':
 910                         ctx->options |= E2F_OPT_COMPRESS_DIRS;
 911                         break;
 912                 case 'E':
 913                         parse_extended_opts(ctx, optarg);
 914                         break;
 915                 case 'p':
 916                 case 'a':
 917                         if (ctx->options & (E2F_OPT_YES|E2F_OPT_NO)) {
 918                         conflict_opt:
 919                                 fatal_error(ctx,
 920         _("Only one of the options -p/-a, -n or -y may be specified."));
 921                         }
 922                         ctx->options |= E2F_OPT_PREEN;
 923                         break;
 924                 case 'n':
 925                         if (ctx->options & (E2F_OPT_YES|E2F_OPT_PREEN))
 926                                 goto conflict_opt;
 927                         ctx->options |= E2F_OPT_NO;
 928                         break;
 929                 case 'y':
 930                         if (ctx->options & (E2F_OPT_PREEN|E2F_OPT_NO))
 931                                 goto conflict_opt;
 932                         ctx->options |= E2F_OPT_YES;
 933                         break;
 934                 case 't':
 935 #ifdef RESOURCE_TRACK
 936                         if (ctx->options & E2F_OPT_TIME)
 937                                 ctx->options |= E2F_OPT_TIME2;
 938                         else
 939                                 ctx->options |= E2F_OPT_TIME;
 940 #else
 941                         fprintf(stderr, _("The -t option is not "
 942                                 "supported on this version of e2fsck.\n"));
 943 #endif
 944                         break;
 945                 case 'c':
 946                         if (cflag++)
 947                                 ctx->options |= E2F_OPT_WRITECHECK;
 948                         ctx->options |= E2F_OPT_CHECKBLOCKS;
 949                         break;
 950                 case 'r':
 951                         /* What we do by default, anyway! */
 952                         break;
 953                 case 'b':
 954                         res = sscanf(optarg, "%llu", &ctx->use_superblock);
 955                         if (res != 1)
 956                                 goto sscanf_err;
 957                         ctx->flags |= E2F_FLAG_SB_SPECIFIED;
 958                         break;
 959                 case 'B':
 960                         ctx->blocksize = atoi(optarg);
 961                         break;
 962                 case 'I':
 963                         res = sscanf(optarg, "%d", &ctx->inode_buffer_blocks);
 964                         if (res != 1)
 965                                 goto sscanf_err;
 966                         break;
 967                 case 'j':
 968                         ctx->journal_name = blkid_get_devname(ctx->blkid,
 969                                                               optarg, NULL);
 970                         if (!ctx->journal_name) {
 971                                 com_err(ctx->program_name, 0,
 972                                         _("Unable to resolve '%s'"),
 973                                         optarg);
 974                                 fatal_error(ctx, 0);
 975                         }
 976                         break;
 977                 case 'P':
 978                         res = sscanf(optarg, "%d", &ctx->process_inode_size);
 979                         if (res != 1)
 980                                 goto sscanf_err;
 981                         break;
 982                 case 'L':
 983                         replace_bad_blocks++;
 984                 case 'l':
 985                         if (bad_blocks_file)
 986                                 free(bad_blocks_file);
 987                         bad_blocks_file = string_copy(ctx, optarg, 0);
 988                         break;
 989                 case 'd':
 990                         ctx->options |= E2F_OPT_DEBUG;
 991                         break;
 992                 case 'f':
 993                         ctx->options |= E2F_OPT_FORCE;
 994                         break;
 995                 case 'F':
 996                         flush = 1;
 997                         break;
 998                 case 'v':
 999                         verbose = 1;
1000                         break;
1001                 case 'V':
1002                         show_version_only = 1;
1003                         break;
1004 #ifdef MTRACE
1005                 case 'M':
1006                         mallwatch = (void *) strtol(optarg, NULL, 0);
1007                         break;
1008 #endif
1009                 case 'N':
1010                         ctx->device_name = string_copy(ctx, optarg, 0);
1011                         break;
1012                 case 'k':
1013                         keep_bad_blocks++;
1014                         break;
1015                 default:
1016                         usage(ctx);
1017                 }
1018         if (show_version_only)
1019                 return 0;
1020         if (optind != argc - 1)
1021                 usage(ctx);
1022         if ((ctx->options & E2F_OPT_NO) &&
1023             (ctx->options & E2F_OPT_COMPRESS_DIRS)) {
1024                 com_err(ctx->program_name, 0, "%s",
1025                         _("The -n and -D options are incompatible."));
1026                 fatal_error(ctx, 0);
1027         }
1028         if ((ctx->options & E2F_OPT_NO) && cflag) {
1029                 com_err(ctx->program_name, 0, "%s",
1030                         _("The -n and -c options are incompatible."));
1031                 fatal_error(ctx, 0);
1032         }
1033         if ((ctx->options & E2F_OPT_NO) && bad_blocks_file) {
1034                 com_err(ctx->program_name, 0, "%s",
1035                         _("The -n and -l/-L options are incompatible."));
1036                 fatal_error(ctx, 0);
1037         }
1038         if (ctx->options & E2F_OPT_NO)
1039                 ctx->options |= E2F_OPT_READONLY;
1040
1041         ctx->io_options = strchr(argv[optind], '?');
1042         if (ctx->io_options)
1043                 *ctx->io_options++ = 0;
1044         ctx->filesystem_name = blkid_get_devname(ctx->blkid, argv[optind], 0);
1045         if (!ctx->filesystem_name) {
1046                 com_err(ctx->program_name, 0, _("Unable to resolve '%s'"),
1047                         argv[optind]);
1048                 fatal_error(ctx, 0);
1049         }
1050
1051         profile_get_boolean(ctx->profile, "options", "report_time", 0, 0,
1052                             &c);
1053         if (c)
1054                 ctx->options |= E2F_OPT_TIME | E2F_OPT_TIME2;
1055         profile_get_boolean(ctx->profile, "options", "report_verbose", 0, 0,
1056                             &c);
1057         if (c)
1058                 verbose = 1;
1059
1060         /* Turn off discard in read-only mode */
1061         if ((ctx->options & E2F_OPT_NO) &&
1062             (ctx->options & E2F_OPT_DISCARD))
1063                 ctx->options &= ~E2F_OPT_DISCARD;
1064
1065         if (flush) {
1066                 fd = open(ctx->filesystem_name, O_RDONLY, 0);
1067                 if (fd < 0) {
1068                         com_err("open", errno,
1069                                 _("while opening %s for flushing"),
1070                                 ctx->filesystem_name);
1071                         fatal_error(ctx, 0);
1072                 }
1073                 if ((retval = ext2fs_sync_device(fd, 1))) {
1074                         com_err("ext2fs_sync_device", retval,
1075                                 _("while trying to flush %s"),
1076                                 ctx->filesystem_name);
1077                         fatal_error(ctx, 0);
1078                 }
1079                 close(fd);
1080         }
1081         if (cflag && bad_blocks_file) {
1082                 fprintf(stderr, "%s", _("The -c and the -l/-L options may not "
1083                                         "be both used at the same time.\n"));
1084                 exit(FSCK_USAGE);
1085         }
1086 #ifdef HAVE_SIGNAL_H
1087         /*
1088          * Set up signal action
1089          */
1090         memset(&sa, 0, sizeof(struct sigaction));
1091         sa.sa_handler = signal_cancel;
1092         sigaction(SIGINT, &sa, 0);
1093         sigaction(SIGTERM, &sa, 0);
1094 #ifdef SA_RESTART
1095         sa.sa_flags = SA_RESTART;
1096 #endif
1097         sa.sa_handler = signal_progress_on;
1098         sigaction(SIGUSR1, &sa, 0);
1099         sa.sa_handler = signal_progress_off;
1100         sigaction(SIGUSR2, &sa, 0);
1101 #endif
1102
1103         /* Update our PATH to include /sbin if we need to run badblocks  */
1104         if (cflag) {
1105                 char *oldpath = getenv("PATH");
1106                 char *newpath;
1107                 int len = sizeof(PATH_SET) + 1;
1108
1109                 if (oldpath)
1110                         len += strlen(oldpath);
1111
1112                 newpath = malloc(len);
1113                 if (!newpath)
1114                         fatal_error(ctx, "Couldn't malloc() newpath");
1115                 strcpy(newpath, PATH_SET);
1116
1117                 if (oldpath) {
1118                         strcat(newpath, ":");
1119                         strcat(newpath, oldpath);
1120                 }
1121                 putenv(newpath);
1122         }
1123 #ifdef CONFIG_JBD_DEBUG
1124         jbd_debug = getenv("E2FSCK_JBD_DEBUG");
1125         if (jbd_debug) {
1126                 res = sscanf(jbd_debug, "%d", &journal_enable_debug);
1127                 if (res != 1) {
1128                         fprintf(stderr,
1129                                 _("E2FSCK_JBD_DEBUG \"%s\" not an integer\n\n"),
1130                                 jbd_debug);
1131                         exit (1);
1132                 }
1133         }
1134 #endif
1135         return 0;
1136
1137 sscanf_err:
1138         fprintf(stderr, _("\nInvalid non-numeric argument to -%c (\"%s\")\n\n"),
1139                 c, optarg);
1140         exit (1);
1141 }
1142
1143 static errcode_t try_open_fs(e2fsck_t ctx, int flags, io_manager io_ptr,
1144                              ext2_filsys *ret_fs)
1145 {
1146         errcode_t retval;
1147
1148         *ret_fs = NULL;
1149         if (ctx->superblock && ctx->blocksize) {
1150                 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
1151                                       flags, ctx->superblock, ctx->blocksize,
1152                                       io_ptr, ret_fs);
1153         } else if (ctx->superblock) {
1154                 int blocksize;
1155                 for (blocksize = EXT2_MIN_BLOCK_SIZE;
1156                      blocksize <= EXT2_MAX_BLOCK_SIZE; blocksize *= 2) {
1157                         if (*ret_fs) {
1158                                 ext2fs_free(*ret_fs);
1159                                 *ret_fs = NULL;
1160                         }
1161                         retval = ext2fs_open2(ctx->filesystem_name,
1162                                               ctx->io_options, flags,
1163                                               ctx->superblock, blocksize,
1164                                               io_ptr, ret_fs);
1165                         if (!retval)
1166                                 break;
1167                 }
1168         } else
1169                 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
1170                                       flags, 0, 0, io_ptr, ret_fs);
1171
1172         if (retval == 0) {
1173                 (*ret_fs)->priv_data = ctx;
1174                 e2fsck_set_bitmap_type(*ret_fs, EXT2FS_BMAP64_RBTREE,
1175                                        "default", NULL);
1176         }
1177         return retval;
1178 }
1179
1180 static const char *my_ver_string = E2FSPROGS_VERSION;
1181 static const char *my_ver_date = E2FSPROGS_DATE;
1182
1183 static errcode_t e2fsck_check_mmp(ext2_filsys fs, e2fsck_t ctx)
1184 {
1185         struct mmp_struct *mmp_s;
1186         unsigned int mmp_check_interval;
1187         errcode_t retval = 0;
1188         struct problem_context pctx;
1189         unsigned int wait_time = 0;
1190
1191         clear_problem_context(&pctx);
1192         if (fs->mmp_buf == NULL) {
1193                 retval = ext2fs_get_mem(fs->blocksize, &fs->mmp_buf);
1194                 if (retval)
1195                         goto check_error;
1196         }
1197
1198         retval = ext2fs_mmp_read(fs, fs->super->s_mmp_block, fs->mmp_buf);
1199         if (retval)
1200                 goto check_error;
1201
1202         mmp_s = fs->mmp_buf;
1203
1204         mmp_check_interval = fs->super->s_mmp_update_interval;
1205         if (mmp_check_interval < EXT4_MMP_MIN_CHECK_INTERVAL)
1206                 mmp_check_interval = EXT4_MMP_MIN_CHECK_INTERVAL;
1207
1208         /*
1209          * If check_interval in MMP block is larger, use that instead of
1210          * check_interval from the superblock.
1211          */
1212         if (mmp_s->mmp_check_interval > mmp_check_interval)
1213                 mmp_check_interval = mmp_s->mmp_check_interval;
1214
1215         wait_time = mmp_check_interval * 2 + 1;
1216
1217         if (mmp_s->mmp_seq == EXT4_MMP_SEQ_CLEAN)
1218                 retval = 0;
1219         else if (mmp_s->mmp_seq == EXT4_MMP_SEQ_FSCK)
1220                 retval = EXT2_ET_MMP_FSCK_ON;
1221         else if (mmp_s->mmp_seq > EXT4_MMP_SEQ_MAX)
1222                 retval = EXT2_ET_MMP_UNKNOWN_SEQ;
1223
1224         if (retval)
1225                 goto check_error;
1226
1227         /* Print warning if e2fck will wait for more than 20 secs. */
1228         if (verbose || wait_time > EXT4_MMP_MIN_CHECK_INTERVAL * 4) {
1229                 log_out(ctx, _("MMP interval is %u seconds and total wait "
1230                                "time is %u seconds. Please wait...\n"),
1231                         mmp_check_interval, wait_time * 2);
1232         }
1233
1234         return 0;
1235
1236 check_error:
1237
1238         if (retval == EXT2_ET_MMP_BAD_BLOCK) {
1239                 if (fix_problem(ctx, PR_0_MMP_INVALID_BLK, &pctx)) {
1240                         fs->super->s_mmp_block = 0;
1241                         ext2fs_mark_super_dirty(fs);
1242                         retval = 0;
1243                 }
1244         } else if (retval == EXT2_ET_MMP_FAILED) {
1245                 com_err(ctx->program_name, retval, "%s",
1246                         _("while checking MMP block"));
1247                 dump_mmp_msg(fs->mmp_buf, NULL);
1248         } else if (retval == EXT2_ET_MMP_FSCK_ON ||
1249                    retval == EXT2_ET_MMP_UNKNOWN_SEQ) {
1250                 com_err(ctx->program_name, retval, "%s",
1251                         _("while checking MMP block"));
1252                 dump_mmp_msg(fs->mmp_buf,
1253                              _("If you are sure the filesystem is not "
1254                                "in use on any node, run:\n"
1255                                "'tune2fs -f -E clear_mmp {device}'\n"));
1256         } else if (retval == EXT2_ET_MMP_MAGIC_INVALID) {
1257                 if (fix_problem(ctx, PR_0_MMP_INVALID_MAGIC, &pctx)) {
1258                         ext2fs_mmp_clear(fs);
1259                         retval = 0;
1260                 }
1261         }
1262         return retval;
1263 }
1264
1265 int main (int argc, char *argv[])
1266 {
1267         errcode_t       retval = 0, retval2 = 0, orig_retval = 0;
1268         int             exit_value = FSCK_OK;
1269         ext2_filsys     fs = 0;
1270         io_manager      io_ptr;
1271         struct ext2_super_block *sb;
1272         const char      *lib_ver_date;
1273         int             my_ver, lib_ver;
1274         e2fsck_t        ctx;
1275         blk64_t         orig_superblock;
1276         struct problem_context pctx;
1277         int flags, run_result, was_changed;
1278         int journal_size;
1279         int sysval, sys_page_size = 4096;
1280         int old_bitmaps;
1281         __u32 features[3];
1282         char *cp;
1283         unsigned int qtype_bits = 0;
1284         enum quota_type qtype;
1285
1286         clear_problem_context(&pctx);
1287         sigcatcher_setup();
1288 #ifdef MTRACE
1289         mtrace();
1290 #endif
1291 #ifdef MCHECK
1292         mcheck(0);
1293 #endif
1294 #ifdef ENABLE_NLS
1295         setlocale(LC_MESSAGES, "");
1296         setlocale(LC_CTYPE, "");
1297         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1298         textdomain(NLS_CAT_NAME);
1299         set_com_err_gettext(gettext);
1300 #endif
1301         my_ver = ext2fs_parse_version_string(my_ver_string);
1302         lib_ver = ext2fs_get_library_version(0, &lib_ver_date);
1303         if (my_ver > lib_ver) {
1304                 fprintf( stderr, "%s",
1305                          _("Error: ext2fs library version out of date!\n"));
1306                 show_version_only++;
1307         }
1308
1309         retval = PRS(argc, argv, &ctx);
1310         if (retval) {
1311                 com_err("e2fsck", retval, "%s",
1312                         _("while trying to initialize program"));
1313                 exit(FSCK_ERROR);
1314         }
1315         reserve_stdio_fds();
1316
1317         set_up_logging(ctx);
1318         if (ctx->logf) {
1319                 int i;
1320                 fputs("E2fsck run: ", ctx->logf);
1321                 for (i = 0; i < argc; i++) {
1322                         if (i)
1323                                 fputc(' ', ctx->logf);
1324                         fputs(argv[i], ctx->logf);
1325                 }
1326                 fputc('\n', ctx->logf);
1327         }
1328
1329         init_resource_track(&ctx->global_rtrack, NULL);
1330         if (!(ctx->options & E2F_OPT_PREEN) || show_version_only)
1331                 log_err(ctx, "e2fsck %s (%s)\n", my_ver_string,
1332                          my_ver_date);
1333
1334         if (show_version_only) {
1335                 log_err(ctx, _("\tUsing %s, %s\n"),
1336                         error_message(EXT2_ET_BASE), lib_ver_date);
1337                 exit(FSCK_OK);
1338         }
1339
1340         check_mount(ctx);
1341
1342         if (!(ctx->options & E2F_OPT_PREEN) &&
1343             !(ctx->options & E2F_OPT_NO) &&
1344             !(ctx->options & E2F_OPT_YES)) {
1345                 if (!ctx->interactive)
1346                         fatal_error(ctx,
1347                                     _("need terminal for interactive repairs"));
1348         }
1349         ctx->superblock = ctx->use_superblock;
1350
1351         flags = EXT2_FLAG_SKIP_MMP;
1352 restart:
1353 #ifdef CONFIG_TESTIO_DEBUG
1354         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1355                 io_ptr = test_io_manager;
1356                 test_io_backing_manager = unix_io_manager;
1357         } else
1358 #endif
1359                 io_ptr = unix_io_manager;
1360         flags |= EXT2_FLAG_NOFREE_ON_ERROR;
1361         profile_get_boolean(ctx->profile, "options", "old_bitmaps", 0, 0,
1362                             &old_bitmaps);
1363         if (!old_bitmaps)
1364                 flags |= EXT2_FLAG_64BITS;
1365         if ((ctx->options & E2F_OPT_READONLY) == 0) {
1366                 flags |= EXT2_FLAG_RW;
1367                 if (!(ctx->mount_flags & EXT2_MF_ISROOT &&
1368                       ctx->mount_flags & EXT2_MF_READONLY))
1369                         flags |= EXT2_FLAG_EXCLUSIVE;
1370                 if ((ctx->mount_flags & EXT2_MF_READONLY) &&
1371                     (ctx->options & E2F_OPT_FORCE))
1372                         flags &= ~EXT2_FLAG_EXCLUSIVE;
1373         }
1374
1375         ctx->openfs_flags = flags;
1376         retval = try_open_fs(ctx, flags, io_ptr, &fs);
1377
1378         if (!ctx->superblock && !(ctx->options & E2F_OPT_PREEN) &&
1379             !(ctx->flags & E2F_FLAG_SB_SPECIFIED) &&
1380             ((retval == EXT2_ET_BAD_MAGIC) ||
1381              (retval == EXT2_ET_CORRUPT_SUPERBLOCK) ||
1382              ((retval == 0) && (retval2 = ext2fs_check_desc(fs))))) {
1383                 if (retval) {
1384                         pctx.errcode = retval;
1385                         fix_problem(ctx, PR_0_OPEN_FAILED, &pctx);
1386                 }
1387                 if (retval2) {
1388                         pctx.errcode = retval2;
1389                         fix_problem(ctx, PR_0_CHECK_DESC_FAILED, &pctx);
1390                 }
1391                 pctx.errcode = 0;
1392                 if (retval2 == ENOMEM || retval2 == EXT2_ET_NO_MEMORY) {
1393                         retval = retval2;
1394                         goto failure;
1395                 }
1396                 if (fs->flags & EXT2_FLAG_NOFREE_ON_ERROR) {
1397                         ext2fs_free(fs);
1398                         fs = NULL;
1399                 }
1400                 if (!fs || (fs->group_desc_count > 1)) {
1401                         log_out(ctx, _("%s: %s trying backup blocks...\n"),
1402                                 ctx->program_name,
1403                                 retval ? _("Superblock invalid,") :
1404                                 _("Group descriptors look bad..."));
1405                         orig_superblock = ctx->superblock;
1406                         get_backup_sb(ctx, fs, ctx->filesystem_name, io_ptr);
1407                         if (fs)
1408                                 ext2fs_close_free(&fs);
1409                         orig_retval = retval;
1410                         retval = try_open_fs(ctx, flags, io_ptr, &fs);
1411                         if ((orig_retval == 0) && retval != 0) {
1412                                 if (fs)
1413                                         ext2fs_close_free(&fs);
1414                                 log_out(ctx, _("%s: %s while using the "
1415                                                "backup blocks"),
1416                                         ctx->program_name,
1417                                         error_message(retval));
1418                                 log_out(ctx, _("%s: going back to original "
1419                                                "superblock\n"),
1420                                         ctx->program_name);
1421                                 ctx->superblock = orig_superblock;
1422                                 retval = try_open_fs(ctx, flags, io_ptr, &fs);
1423                         }
1424                 }
1425         }
1426         if (((retval == EXT2_ET_UNSUPP_FEATURE) ||
1427              (retval == EXT2_ET_RO_UNSUPP_FEATURE)) &&
1428             fs && fs->super) {
1429                 sb = fs->super;
1430                 features[0] = (sb->s_feature_compat &
1431                                ~EXT2_LIB_FEATURE_COMPAT_SUPP);
1432                 features[1] = (sb->s_feature_incompat &
1433                                ~EXT2_LIB_FEATURE_INCOMPAT_SUPP);
1434                 features[2] = (sb->s_feature_ro_compat &
1435                                ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
1436                 if (features[0] || features[1] || features[2])
1437                         goto print_unsupp_features;
1438         }
1439 failure:
1440         if (retval) {
1441                 if (orig_retval)
1442                         retval = orig_retval;
1443                 com_err(ctx->program_name, retval, _("while trying to open %s"),
1444                         ctx->filesystem_name);
1445                 if (retval == EXT2_ET_REV_TOO_HIGH) {
1446                         log_out(ctx, "%s",
1447                                 _("The filesystem revision is apparently "
1448                                   "too high for this version of e2fsck.\n"
1449                                   "(Or the filesystem superblock "
1450                                   "is corrupt)\n\n"));
1451                         fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
1452                 } else if (retval == EXT2_ET_SHORT_READ)
1453                         log_out(ctx, "%s",
1454                                 _("Could this be a zero-length partition?\n"));
1455                 else if ((retval == EPERM) || (retval == EACCES))
1456                         log_out(ctx, _("You must have %s access to the "
1457                                        "filesystem or be root\n"),
1458                                (ctx->options & E2F_OPT_READONLY) ?
1459                                "r/o" : "r/w");
1460                 else if (retval == ENXIO)
1461                         log_out(ctx, "%s",
1462                                 _("Possibly non-existent or swap device?\n"));
1463                 else if (retval == EBUSY)
1464                         log_out(ctx, "%s", _("Filesystem mounted or opened "
1465                                          "exclusively by another program?\n"));
1466                 else if (retval == ENOENT)
1467                         log_out(ctx, "%s",
1468                                 _("Possibly non-existent device?\n"));
1469 #ifdef EROFS
1470                 else if (retval == EROFS)
1471                         log_out(ctx, "%s", _("Disk write-protected; use the "
1472                                              "-n option to do a read-only\n"
1473                                              "check of the device.\n"));
1474 #endif
1475                 else
1476                         fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
1477                 fatal_error(ctx, 0);
1478         }
1479         /*
1480          * We only update the master superblock because (a) paranoia;
1481          * we don't want to corrupt the backup superblocks, and (b) we
1482          * don't need to update the mount count and last checked
1483          * fields in the backup superblock (the kernel doesn't update
1484          * the backup superblocks anyway).  With newer versions of the
1485          * library this flag is set by ext2fs_open2(), but we set this
1486          * here just to be sure.  (No, we don't support e2fsck running
1487          * with some other libext2fs than the one that it was shipped
1488          * with, but just in case....)
1489          */
1490         fs->flags |= EXT2_FLAG_MASTER_SB_ONLY;
1491
1492         if (!(ctx->flags & E2F_FLAG_GOT_DEVSIZE)) {
1493                 __u32 blocksize = EXT2_BLOCK_SIZE(fs->super);
1494                 int need_restart = 0;
1495
1496                 pctx.errcode = ext2fs_get_device_size2(ctx->filesystem_name,
1497                                                        blocksize,
1498                                                        &ctx->num_blocks);
1499                 /*
1500                  * The floppy driver refuses to allow anyone else to
1501                  * open the device if has been opened with O_EXCL;
1502                  * this is unlike other block device drivers in Linux.
1503                  * To handle this, we close the filesystem and then
1504                  * reopen the filesystem after we get the device size.
1505                  */
1506                 if (pctx.errcode == EBUSY) {
1507                         ext2fs_close_free(&fs);
1508                         need_restart++;
1509                         pctx.errcode =
1510                                 ext2fs_get_device_size2(ctx->filesystem_name,
1511                                                         blocksize,
1512                                                         &ctx->num_blocks);
1513                 }
1514                 if (pctx.errcode == EXT2_ET_UNIMPLEMENTED)
1515                         ctx->num_blocks = 0;
1516                 else if (pctx.errcode) {
1517                         fix_problem(ctx, PR_0_GETSIZE_ERROR, &pctx);
1518                         ctx->flags |= E2F_FLAG_ABORT;
1519                         fatal_error(ctx, 0);
1520                 }
1521                 ctx->flags |= E2F_FLAG_GOT_DEVSIZE;
1522                 if (need_restart)
1523                         goto restart;
1524         }
1525
1526         ctx->fs = fs;
1527         fs->now = ctx->now;
1528         sb = fs->super;
1529
1530         if (sb->s_rev_level > E2FSCK_CURRENT_REV) {
1531                 com_err(ctx->program_name, EXT2_ET_REV_TOO_HIGH,
1532                         _("while trying to open %s"),
1533                         ctx->filesystem_name);
1534         get_newer:
1535                 fatal_error(ctx, _("Get a newer version of e2fsck!"));
1536         }
1537
1538         /*
1539          * Set the device name, which is used whenever we print error
1540          * or informational messages to the user.
1541          */
1542         if (ctx->device_name == 0 &&
1543             (sb->s_volume_name[0] != 0)) {
1544                 ctx->device_name = string_copy(ctx, sb->s_volume_name,
1545                                                sizeof(sb->s_volume_name));
1546         }
1547         if (ctx->device_name == 0)
1548                 ctx->device_name = string_copy(ctx, ctx->filesystem_name, 0);
1549         for (cp = ctx->device_name; *cp; cp++)
1550                 if (isspace(*cp) || *cp == ':')
1551                         *cp = '_';
1552
1553         ehandler_init(fs->io);
1554
1555         if ((fs->super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_MMP) &&
1556             (flags & EXT2_FLAG_SKIP_MMP)) {
1557                 if (e2fsck_check_mmp(fs, ctx))
1558                         fatal_error(ctx, 0);
1559
1560                 /*
1561                  * Restart in order to reopen fs but this time start mmp.
1562                  */
1563                 ext2fs_close_free(&ctx->fs);
1564                 flags &= ~EXT2_FLAG_SKIP_MMP;
1565                 goto restart;
1566         }
1567
1568         if (ctx->logf)
1569                 fprintf(ctx->logf, "Filesystem UUID: %s\n",
1570                         e2p_uuid2str(sb->s_uuid));
1571
1572         /*
1573          * Make sure the ext3 superblock fields are consistent.
1574          */
1575         retval = e2fsck_check_ext3_journal(ctx);
1576         if (retval) {
1577                 com_err(ctx->program_name, retval,
1578                         _("while checking ext3 journal for %s"),
1579                         ctx->device_name);
1580                 fatal_error(ctx, 0);
1581         }
1582
1583         /*
1584          * Check to see if we need to do ext3-style recovery.  If so,
1585          * do it, and then restart the fsck.
1586          */
1587         if (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) {
1588                 if (ctx->options & E2F_OPT_READONLY) {
1589                         log_out(ctx, "%s",
1590                                 _("Warning: skipping journal recovery because "
1591                                   "doing a read-only filesystem check.\n"));
1592                         io_channel_flush(ctx->fs->io);
1593                 } else {
1594                         if (ctx->flags & E2F_FLAG_RESTARTED) {
1595                                 /*
1596                                  * Whoops, we attempted to run the
1597                                  * journal twice.  This should never
1598                                  * happen, unless the hardware or
1599                                  * device driver is being bogus.
1600                                  */
1601                                 com_err(ctx->program_name, 0,
1602                                         _("unable to set superblock flags "
1603                                           "on %s\n"), ctx->device_name);
1604                                 fatal_error(ctx, 0);
1605                         }
1606                         retval = e2fsck_run_ext3_journal(ctx);
1607                         if (retval) {
1608                                 com_err(ctx->program_name, retval,
1609                                 _("while recovering ext3 journal of %s"),
1610                                         ctx->device_name);
1611                                 fatal_error(ctx, 0);
1612                         }
1613                         ext2fs_close_free(&ctx->fs);
1614                         ctx->flags |= E2F_FLAG_RESTARTED;
1615                         goto restart;
1616                 }
1617         }
1618
1619         /*
1620          * Check for compatibility with the feature sets.  We need to
1621          * be more stringent than ext2fs_open().
1622          */
1623         features[0] = sb->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP;
1624         features[1] = sb->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP;
1625         features[2] = (sb->s_feature_ro_compat &
1626                        ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
1627 print_unsupp_features:
1628         if (features[0] || features[1] || features[2]) {
1629                 int     i, j;
1630                 __u32   *mask = features, m;
1631
1632                 log_err(ctx, _("%s has unsupported feature(s):"),
1633                         ctx->filesystem_name);
1634
1635                 for (i=0; i <3; i++,mask++) {
1636                         for (j=0,m=1; j < 32; j++, m<<=1) {
1637                                 if (*mask & m)
1638                                         log_err(ctx, " %s",
1639                                                 e2p_feature2string(i, m));
1640                         }
1641                 }
1642                 log_err(ctx, "\n");
1643                 goto get_newer;
1644         }
1645 #ifdef ENABLE_COMPRESSION
1646         if (sb->s_feature_incompat & EXT2_FEATURE_INCOMPAT_COMPRESSION)
1647                 log_err(ctx, _("%s: warning: compression support "
1648                                "is experimental.\n"),
1649                         ctx->program_name);
1650 #endif
1651 #ifndef ENABLE_HTREE
1652         if (sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) {
1653                 log_err(ctx, _("%s: e2fsck not compiled with HTREE support,\n\t"
1654                           "but filesystem %s has HTREE directories.\n"),
1655                         ctx->program_name, ctx->device_name);
1656                 goto get_newer;
1657         }
1658 #endif
1659
1660         /*
1661          * If the user specified a specific superblock, presumably the
1662          * master superblock has been trashed.  So we mark the
1663          * superblock as dirty, so it can be written out.
1664          */
1665         if (ctx->superblock &&
1666             !(ctx->options & E2F_OPT_READONLY))
1667                 ext2fs_mark_super_dirty(fs);
1668
1669         /*
1670          * Calculate the number of filesystem blocks per pagesize.  If
1671          * fs->blocksize > page_size, set the number of blocks per
1672          * pagesize to 1 to avoid division by zero errors.
1673          */
1674 #ifdef _SC_PAGESIZE
1675         sysval = sysconf(_SC_PAGESIZE);
1676         if (sysval > 0)
1677                 sys_page_size = sysval;
1678 #endif /* _SC_PAGESIZE */
1679         ctx->blocks_per_page = sys_page_size / fs->blocksize;
1680         if (ctx->blocks_per_page == 0)
1681                 ctx->blocks_per_page = 1;
1682
1683         if (ctx->superblock)
1684                 set_latch_flags(PR_LATCH_RELOC, PRL_LATCHED, 0);
1685         ext2fs_mark_valid(fs);
1686         check_super_block(ctx);
1687         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1688                 fatal_error(ctx, 0);
1689         check_if_skip(ctx);
1690
1691         if (EXT2_GOOD_OLD_INODE_SIZE + sb->s_want_extra_isize >
1692                                                         EXT2_INODE_SIZE(sb)) {
1693                 if (fix_problem(ctx, PR_0_WANT_EXTRA_ISIZE_INVALID, &pctx))
1694                         sb->s_want_extra_isize =
1695                                 sizeof(struct ext2_inode_large) -
1696                                 EXT2_GOOD_OLD_INODE_SIZE;
1697         }
1698         if (EXT2_GOOD_OLD_INODE_SIZE + sb->s_min_extra_isize >
1699                                                         EXT2_INODE_SIZE(sb)) {
1700                 if (fix_problem(ctx, PR_0_MIN_EXTRA_ISIZE_INVALID, &pctx))
1701                         sb->s_min_extra_isize = 0;
1702         }
1703         if (EXT2_INODE_SIZE(sb) > EXT2_GOOD_OLD_INODE_SIZE) {
1704                 ctx->want_extra_isize = sizeof(struct ext2_inode_large) -
1705                                                      EXT2_GOOD_OLD_INODE_SIZE;
1706                 ctx->min_extra_isize = ~0L;
1707                 if (EXT2_HAS_RO_COMPAT_FEATURE(sb,
1708                                        EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE)) {
1709                         if (ctx->want_extra_isize < sb->s_want_extra_isize)
1710                                 ctx->want_extra_isize = sb->s_want_extra_isize;
1711                         if (ctx->want_extra_isize < sb->s_min_extra_isize)
1712                                 ctx->want_extra_isize = sb->s_min_extra_isize;
1713                 }
1714         } else {
1715                 /* Leave extra_isize set, it is harmless, and clearing it
1716                  * here breaks some regression tests by printing an extra
1717                  * message to the output for very little value. */
1718                 sb->s_want_extra_isize = 0;
1719                 sb->s_min_extra_isize = 0;
1720                 ctx->flags &= ~E2F_FLAG_EXPAND_EISIZE;
1721         }
1722
1723         if (ctx->options & E2F_OPT_READONLY) {
1724                 if (ctx->flags & (E2F_FLAG_EXPAND_EISIZE)) {
1725                         fprintf(stderr, _("Cannot enable EXTRA_ISIZE feature "
1726                                           "on read-only filesystem\n"));
1727                         exit(1);
1728                 }
1729         } else {
1730                 if (sb->s_want_extra_isize > sb->s_min_extra_isize &&
1731                     (sb->s_feature_ro_compat &
1732                      EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE))
1733                         ctx->flags |= E2F_FLAG_EXPAND_EISIZE;
1734         }
1735
1736         check_resize_inode(ctx);
1737         if (bad_blocks_file)
1738                 read_bad_blocks_file(ctx, bad_blocks_file, replace_bad_blocks);
1739         else if (cflag)
1740                 read_bad_blocks_file(ctx, 0, !keep_bad_blocks); /* Test disk */
1741         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1742                 fatal_error(ctx, 0);
1743
1744         /*
1745          * Mark the system as valid, 'til proven otherwise
1746          */
1747         ext2fs_mark_valid(fs);
1748
1749         retval = ext2fs_read_bb_inode(fs, &fs->badblocks);
1750         if (retval) {
1751                 log_out(ctx, _("%s: %s while reading bad blocks inode\n"),
1752                         ctx->program_name, error_message(retval));
1753                 preenhalt(ctx);
1754                 log_out(ctx, "%s", _("This doesn't bode well, "
1755                                      "but we'll try to go on...\n"));
1756         }
1757
1758         /*
1759          * Save the journal size in megabytes.
1760          * Try and use the journal size from the backup else let e2fsck
1761          * find the default journal size.
1762          */
1763         if (sb->s_jnl_backup_type == EXT3_JNL_BACKUP_BLOCKS)
1764                 journal_size = (sb->s_jnl_blocks[15] << (32 - 20)) |
1765                                (sb->s_jnl_blocks[16] >> 20);
1766         else
1767                 journal_size = -1;
1768
1769         if (sb->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_QUOTA) {
1770                 /* Quotas were enabled. Do quota accounting during fsck. */
1771                 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1772                         if (*quota_sb_inump(sb, qtype) != 0)
1773                                 qtype_bits |= 1 << qtype;
1774                 }
1775
1776                 quota_init_context(&ctx->qctx, ctx->fs, qtype_bits);
1777         }
1778
1779         run_result = e2fsck_run(ctx);
1780         e2fsck_clear_progbar(ctx);
1781
1782         if (!ctx->invalid_bitmaps &&
1783             (ctx->flags & E2F_FLAG_JOURNAL_INODE)) {
1784                 if (fix_problem(ctx, PR_6_RECREATE_JOURNAL, &pctx)) {
1785                         if (journal_size < 1024)
1786                                 journal_size = ext2fs_default_journal_size(ext2fs_blocks_count(fs->super));
1787                         if (journal_size < 0) {
1788                                 fs->super->s_feature_compat &=
1789                                         ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
1790                                 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1791                                 log_out(ctx, "%s: Couldn't determine "
1792                                         "journal size\n", ctx->program_name);
1793                                 goto no_journal;
1794                         }
1795                         log_out(ctx, _("Creating journal (%d blocks): "),
1796                                journal_size);
1797                         fflush(stdout);
1798                         retval = ext2fs_add_journal_inode(fs,
1799                                                           journal_size, 0);
1800                         if (retval) {
1801                                 log_out(ctx, "%s: while trying to create "
1802                                         "journal\n", error_message(retval));
1803                                 goto no_journal;
1804                         }
1805                         log_out(ctx, "%s", _(" Done.\n"));
1806                         log_out(ctx, "%s",
1807                                 _("\n*** journal has been re-created - "
1808                                   "filesystem is now ext3 again ***\n"));
1809                 }
1810         }
1811 no_journal:
1812
1813         if (run_result & E2F_FLAG_ABORT) {
1814                 fatal_error(ctx, _("aborted"));
1815         } else if (run_result & E2F_FLAG_CANCEL) {
1816                 log_out(ctx, _("%s: e2fsck canceled.\n"), ctx->device_name ?
1817                         ctx->device_name : ctx->filesystem_name);
1818                 exit_value |= FSCK_CANCELED;
1819         } else if (ctx->qctx && !ctx->invalid_bitmaps) {
1820                 int needs_writeout;
1821
1822                 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1823                         if (((1 << qtype) & qtype_bits) == 0)
1824                                 continue;
1825                         needs_writeout = 0;
1826                         pctx.num = qtype;
1827                         retval = quota_compare_and_update(ctx->qctx, qtype,
1828                                                           &needs_writeout);
1829                         if ((retval || needs_writeout) &&
1830                             fix_problem(ctx, PR_6_UPDATE_QUOTAS, &pctx))
1831                                 quota_write_inode(ctx->qctx, 1 << qtype);
1832                 }
1833                 quota_release_context(&ctx->qctx);
1834         }
1835
1836         if (run_result == E2F_FLAG_RESTART) {
1837                 log_out(ctx, "%s",
1838                         _("Restarting e2fsck from the beginning...\n"));
1839                 retval = e2fsck_reset_context(ctx);
1840                 if (retval) {
1841                         com_err(ctx->program_name, retval, "%s",
1842                                 _("while resetting context"));
1843                         fatal_error(ctx, 0);
1844                 }
1845                 ext2fs_close_free(&ctx->fs);
1846                 goto restart;
1847         }
1848
1849 #ifdef MTRACE
1850         mtrace_print("Cleanup");
1851 #endif
1852         was_changed = ext2fs_test_changed(fs);
1853         if (!(ctx->flags & E2F_FLAG_RUN_RETURN) &&
1854             !(ctx->options & E2F_OPT_READONLY)) {
1855                 if (ext2fs_test_valid(fs)) {
1856                         if (!(sb->s_state & EXT2_VALID_FS))
1857                                 exit_value |= FSCK_NONDESTRUCT;
1858                         sb->s_state = EXT2_VALID_FS;
1859                         if (check_backup_super_block(ctx))
1860                                 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1861                 } else
1862                         sb->s_state &= ~EXT2_VALID_FS;
1863                 if (!(ctx->flags & E2F_FLAG_TIME_INSANE))
1864                         sb->s_lastcheck = ctx->now;
1865                 sb->s_mnt_count = 0;
1866                 memset(((char *) sb) + EXT4_S_ERR_START, 0, EXT4_S_ERR_LEN);
1867                 pctx.errcode = ext2fs_set_gdt_csum(ctx->fs);
1868                 if (pctx.errcode)
1869                         fix_problem(ctx, PR_6_SET_BG_CHECKSUM, &pctx);
1870                 ext2fs_mark_super_dirty(fs);
1871         }
1872
1873         e2fsck_write_bitmaps(ctx);
1874         if (fs->flags & EXT2_FLAG_DIRTY) {
1875                 pctx.errcode = ext2fs_flush(ctx->fs);
1876                 if (pctx.errcode)
1877                         fix_problem(ctx, PR_6_FLUSH_FILESYSTEM, &pctx);
1878         }
1879         pctx.errcode = io_channel_flush(ctx->fs->io);
1880         if (pctx.errcode)
1881                 fix_problem(ctx, PR_6_IO_FLUSH, &pctx);
1882
1883         if (was_changed) {
1884                 exit_value |= FSCK_NONDESTRUCT;
1885                 if (!(ctx->options & E2F_OPT_PREEN))
1886                         log_out(ctx, _("\n%s: ***** FILE SYSTEM WAS "
1887                                        "MODIFIED *****\n"),
1888                                 ctx->device_name);
1889                 if (ctx->mount_flags & EXT2_MF_ISROOT) {
1890                         log_out(ctx, _("%s: ***** REBOOT LINUX *****\n"),
1891                                 ctx->device_name);
1892                         exit_value |= FSCK_REBOOT;
1893                 }
1894         }
1895         if (!ext2fs_test_valid(fs) ||
1896             ((exit_value & FSCK_CANCELED) &&
1897              (sb->s_state & EXT2_ERROR_FS))) {
1898                 log_out(ctx, _("\n%s: ********** WARNING: Filesystem still has "
1899                                "errors **********\n\n"), ctx->device_name);
1900                 exit_value |= FSCK_UNCORRECTED;
1901                 exit_value &= ~FSCK_NONDESTRUCT;
1902         }
1903         if (exit_value & FSCK_CANCELED) {
1904                 int     allow_cancellation;
1905
1906                 profile_get_boolean(ctx->profile, "options",
1907                                     "allow_cancellation", 0, 0,
1908                                     &allow_cancellation);
1909                 exit_value &= ~FSCK_NONDESTRUCT;
1910                 if (allow_cancellation && ext2fs_test_valid(fs) &&
1911                     (sb->s_state & EXT2_VALID_FS) &&
1912                     !(sb->s_state & EXT2_ERROR_FS))
1913                         exit_value = 0;
1914         } else
1915                 show_stats(ctx);
1916
1917         print_resource_track(ctx, NULL, &ctx->global_rtrack, ctx->fs->io);
1918
1919         ext2fs_close_free(&ctx->fs);
1920         free(ctx->journal_name);
1921
1922         e2fsck_free_context(ctx);
1923         remove_error_table(&et_ext2_error_table);
1924         remove_error_table(&et_prof_error_table);
1925         return exit_value;
1926 }