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 #include <libgen.h>
  49
  50 #include "e2p/e2p.h"
  51 #include "et/com_err.h"
  52 #include "e2p/e2p.h"
  53 #include "support/plausible.h"
  54 #include "e2fsck.h"
  55 #include "problem.h"
  56 #include "../version.h"
  57
  58 /* Command line options */
  59 static int cflag;               /* check disk */
  60 static int show_version_only;
  61 static int verbose;
  62
  63 static int replace_bad_blocks;
  64 static int keep_bad_blocks;
  65 static char *bad_blocks_file;
  66
  67 e2fsck_t e2fsck_global_ctx;     /* Try your very best not to use this! */
  68
  69 #ifdef CONFIG_JBD_DEBUG         /* Enabled by configure --enable-jfs-debug */
  70 int journal_enable_debug = -1;
  71 #endif
  72
  73 static void usage(e2fsck_t ctx)
  74 {
  75         fprintf(stderr,
  76                 _("Usage: %s [-panyrcdfvtDFV] [-b superblock] [-B blocksize]\n"
  77                 "\t\t[-I inode_buffer_blocks] [-P process_inode_size]\n"
  78                 "\t\t[-l|-L bad_blocks_file] [-C fd] [-j external_journal]\n"
  79                 "\t\t[-E extended-options] [-z undo_file] device\n"),
  80                 ctx->program_name);
  81
  82         fprintf(stderr, "%s", _("\nEmergency help:\n"
  83                 " -p                   Automatic repair (no questions)\n"
  84                 " -n                   Make no changes to the filesystem\n"
  85                 " -y                   Assume \"yes\" to all questions\n"
  86                 " -c                   Check for bad blocks and add them to the badblock list\n"
  87                 " -f                   Force checking even if filesystem is marked clean\n"));
  88         fprintf(stderr, "%s", _(""
  89                 " -v                   Be verbose\n"
  90                 " -b superblock        Use alternative superblock\n"
  91                 " -B blocksize         Force blocksize when looking for superblock\n"
  92                 " -j external_journal  Set location of the external journal\n"
  93                 " -l bad_blocks_file   Add to badblocks list\n"
  94                 " -L bad_blocks_file   Set badblocks list\n"
  95                 " -z undo_file         Create an undo file\n"
  96                 ));
  97
  98         exit(FSCK_USAGE);
  99 }
 100
 101 static void show_stats(e2fsck_t ctx)
 102 {
 103         ext2_filsys fs = ctx->fs;
 104         ext2_ino_t inodes, inodes_used;
 105         blk64_t blocks, blocks_used;
 106         unsigned int dir_links;
 107         unsigned int num_files, num_links;
 108         __u32 *mask, m;
 109         int frag_percent_file, frag_percent_dir, frag_percent_total;
 110         int i, j, printed = 0;
 111
 112         dir_links = 2 * ctx->fs_directory_count - 1;
 113         num_files = ctx->fs_total_count - dir_links;
 114         num_links = ctx->fs_links_count - dir_links;
 115         inodes = fs->super->s_inodes_count;
 116         inodes_used = (fs->super->s_inodes_count -
 117                        fs->super->s_free_inodes_count);
 118         blocks = ext2fs_blocks_count(fs->super);
 119         blocks_used = (ext2fs_blocks_count(fs->super) -
 120                        ext2fs_free_blocks_count(fs->super));
 121
 122         frag_percent_file = (10000 * ctx->fs_fragmented) / inodes_used;
 123         frag_percent_file = (frag_percent_file + 5) / 10;
 124
 125         frag_percent_dir = (10000 * ctx->fs_fragmented_dir) / inodes_used;
 126         frag_percent_dir = (frag_percent_dir + 5) / 10;
 127
 128         frag_percent_total = ((10000 * (ctx->fs_fragmented +
 129                                         ctx->fs_fragmented_dir))
 130                               / inodes_used);
 131         frag_percent_total = (frag_percent_total + 5) / 10;
 132
 133         if (!verbose) {
 134                 log_out(ctx, _("%s: %u/%u files (%0d.%d%% non-contiguous), "
 135                                "%llu/%llu blocks\n"),
 136                         ctx->device_name, inodes_used, inodes,
 137                         frag_percent_total / 10, frag_percent_total % 10,
 138                         blocks_used, blocks);
 139                 return;
 140         }
 141         profile_get_boolean(ctx->profile, "options", "report_features", 0, 0,
 142                             &i);
 143         if (verbose && i) {
 144                 log_out(ctx, "\nFilesystem features:");
 145                 mask = &ctx->fs->super->s_feature_compat;
 146                 for (i = 0; i < 3; i++, mask++) {
 147                         for (j = 0, m = 1; j < 32; j++, m <<= 1) {
 148                                 if (*mask & m) {
 149                                         log_out(ctx, " %s",
 150                                                 e2p_feature2string(i, m));
 151                                         printed++;
 152                                 }
 153                         }
 154                 }
 155                 if (printed == 0)
 156                         log_out(ctx, " (none)");
 157                 log_out(ctx, "\n");
 158         }
 159
 160         log_out(ctx, P_("\n%12u inode used (%2.2f%%, out of %u)\n",
 161                         "\n%12u inodes used (%2.2f%%, out of %u)\n",
 162                         inodes_used), inodes_used,
 163                 100.0 * inodes_used / inodes, inodes);
 164         log_out(ctx, P_("%12u non-contiguous file (%0d.%d%%)\n",
 165                         "%12u non-contiguous files (%0d.%d%%)\n",
 166                         ctx->fs_fragmented),
 167                 ctx->fs_fragmented, frag_percent_file / 10,
 168                 frag_percent_file % 10);
 169         log_out(ctx, P_("%12u non-contiguous directory (%0d.%d%%)\n",
 170                         "%12u non-contiguous directories (%0d.%d%%)\n",
 171                         ctx->fs_fragmented_dir),
 172                 ctx->fs_fragmented_dir, frag_percent_dir / 10,
 173                 frag_percent_dir % 10);
 174         log_out(ctx, _("             # of inodes with ind/dind/tind blocks: "
 175                        "%u/%u/%u\n"),
 176                 ctx->fs_ind_count, ctx->fs_dind_count, ctx->fs_tind_count);
 177
 178         for (j=MAX_EXTENT_DEPTH_COUNT-1; j >=0; j--)
 179                 if (ctx->extent_depth_count[j])
 180                         break;
 181         if (++j) {
 182                 log_out(ctx, "%s", _("             Extent depth histogram: "));
 183                 for (i=0; i < j; i++) {
 184                         if (i)
 185                                 fputc('/', stdout);
 186                         log_out(ctx, "%u", ctx->extent_depth_count[i]);
 187                 }
 188                 log_out(ctx, "\n");
 189         }
 190
 191         log_out(ctx, P_("%12llu block used (%2.2f%%, out of %llu)\n",
 192                         "%12llu blocks used (%2.2f%%, out of %llu)\n",
 193                    blocks_used),
 194                 blocks_used, 100.0 * blocks_used / blocks, blocks);
 195         log_out(ctx, P_("%12u bad block\n", "%12u bad blocks\n",
 196                         ctx->fs_badblocks_count), ctx->fs_badblocks_count);
 197         log_out(ctx, P_("%12u large file\n", "%12u large files\n",
 198                         ctx->large_files), ctx->large_files);
 199         log_out(ctx, P_("\n%12u regular file\n", "\n%12u regular files\n",
 200                         ctx->fs_regular_count), ctx->fs_regular_count);
 201         log_out(ctx, P_("%12u directory\n", "%12u directories\n",
 202                         ctx->fs_directory_count), ctx->fs_directory_count);
 203         log_out(ctx, P_("%12u character device file\n",
 204                         "%12u character device files\n", ctx->fs_chardev_count),
 205                 ctx->fs_chardev_count);
 206         log_out(ctx, P_("%12u block device file\n", "%12u block device files\n",
 207                         ctx->fs_blockdev_count), ctx->fs_blockdev_count);
 208         log_out(ctx, P_("%12u fifo\n", "%12u fifos\n", ctx->fs_fifo_count),
 209                 ctx->fs_fifo_count);
 210         log_out(ctx, P_("%12u link\n", "%12u links\n", num_links),
 211                 ctx->fs_links_count - dir_links);
 212         log_out(ctx, P_("%12u symbolic link", "%12u symbolic links",
 213                         ctx->fs_symlinks_count), ctx->fs_symlinks_count);
 214         log_out(ctx, P_(" (%u fast symbolic link)\n",
 215                         " (%u fast symbolic links)\n",
 216                         ctx->fs_fast_symlinks_count),
 217                 ctx->fs_fast_symlinks_count);
 218         log_out(ctx, P_("%12u socket\n", "%12u sockets\n",
 219                         ctx->fs_sockets_count),
 220                 ctx->fs_sockets_count);
 221         log_out(ctx, "------------\n");
 222         log_out(ctx, P_("%12u file\n", "%12u files\n", num_files),
 223                 num_files);
 224 }
 225
 226 static void check_mount(e2fsck_t ctx)
 227 {
 228         errcode_t       retval;
 229         int             cont;
 230
 231         retval = ext2fs_check_if_mounted(ctx->filesystem_name,
 232                                          &ctx->mount_flags);
 233         if (retval) {
 234                 com_err("ext2fs_check_if_mount", retval,
 235                         _("while determining whether %s is mounted."),
 236                         ctx->filesystem_name);
 237                 return;
 238         }
 239
 240         /*
 241          * If the filesystem isn't mounted, or it's the root
 242          * filesystem and it's mounted read-only, and we're not doing
 243          * a read/write check, then everything's fine.
 244          */
 245         if ((!(ctx->mount_flags & (EXT2_MF_MOUNTED | EXT2_MF_BUSY))) ||
 246             ((ctx->mount_flags & EXT2_MF_ISROOT) &&
 247              (ctx->mount_flags & EXT2_MF_READONLY) &&
 248              !(ctx->options & E2F_OPT_WRITECHECK)))
 249                 return;
 250
 251         if (((ctx->options & E2F_OPT_READONLY) ||
 252              ((ctx->options & E2F_OPT_FORCE) &&
 253               (ctx->mount_flags & EXT2_MF_READONLY))) &&
 254             !(ctx->options & E2F_OPT_WRITECHECK)) {
 255                 if (ctx->mount_flags & EXT2_MF_MOUNTED)
 256                         log_out(ctx, _("Warning!  %s is mounted.\n"),
 257                                         ctx->filesystem_name);
 258                 else
 259                         log_out(ctx, _("Warning!  %s is in use.\n"),
 260                                         ctx->filesystem_name);
 261                 return;
 262         }
 263
 264         if (ctx->mount_flags & EXT2_MF_MOUNTED)
 265                 log_out(ctx, _("%s is mounted.\n"), ctx->filesystem_name);
 266         else
 267                 log_out(ctx, _("%s is in use.\n"), ctx->filesystem_name);
 268         if (!ctx->interactive || ctx->mount_flags & EXT2_MF_BUSY)
 269                 fatal_error(ctx, _("Cannot continue, aborting.\n\n"));
 270         puts("\007\007\007\007");
 271         log_out(ctx, "%s", _("\n\nWARNING!!!  "
 272                        "The filesystem is mounted.   "
 273                        "If you continue you ***WILL***\n"
 274                        "cause ***SEVERE*** filesystem damage.\n\n"));
 275         puts("\007\007\007");
 276         cont = ask_yn(ctx, _("Do you really want to continue"), 0);
 277         if (!cont) {
 278                 printf("%s", _("check aborted.\n"));
 279                 exit (0);
 280         }
 281         return;
 282 }
 283
 284 static int is_on_batt(void)
 285 {
 286         FILE    *f;
 287         DIR     *d;
 288         char    tmp[80], tmp2[80], fname[80];
 289         unsigned int    acflag;
 290         struct dirent*  de;
 291
 292         f = fopen("/sys/class/power_supply/AC/online", "r");
 293         if (f) {
 294                 if (fscanf(f, "%u\n", &acflag) == 1) {
 295                         fclose(f);
 296                         return (!acflag);
 297                 }
 298                 fclose(f);
 299         }
 300         f = fopen("/proc/apm", "r");
 301         if (f) {
 302                 if (fscanf(f, "%s %s %s %x", tmp, tmp, tmp, &acflag) != 4)
 303                         acflag = 1;
 304                 fclose(f);
 305                 return (acflag != 1);
 306         }
 307         d = opendir("/proc/acpi/ac_adapter");
 308         if (d) {
 309                 while ((de=readdir(d)) != NULL) {
 310                         if (!strncmp(".", de->d_name, 1))
 311                                 continue;
 312                         snprintf(fname, 80, "/proc/acpi/ac_adapter/%s/state",
 313                                  de->d_name);
 314                         f = fopen(fname, "r");
 315                         if (!f)
 316                                 continue;
 317                         if (fscanf(f, "%s %s", tmp2, tmp) != 2)
 318                                 tmp[0] = 0;
 319                         fclose(f);
 320                         if (strncmp(tmp, "off-line", 8) == 0) {
 321                                 closedir(d);
 322                                 return 1;
 323                         }
 324                 }
 325                 closedir(d);
 326         }
 327         return 0;
 328 }
 329
 330 /*
 331  * This routine checks to see if a filesystem can be skipped; if so,
 332  * it will exit with E2FSCK_OK.  Under some conditions it will print a
 333  * message explaining why a check is being forced.
 334  */
 335 static void check_if_skip(e2fsck_t ctx)
 336 {
 337         ext2_filsys fs = ctx->fs;
 338         struct problem_context pctx;
 339         const char *reason = NULL;
 340         unsigned int reason_arg = 0;
 341         long next_check;
 342         int batt = is_on_batt();
 343         int defer_check_on_battery;
 344         int broken_system_clock;
 345         time_t lastcheck;
 346
 347         if (ctx->flags & E2F_FLAG_PROBLEMS_FIXED)
 348                 return;
 349
 350         profile_get_boolean(ctx->profile, "options", "broken_system_clock",
 351                             0, 0, &broken_system_clock);
 352         if (ctx->flags & E2F_FLAG_TIME_INSANE)
 353                 broken_system_clock = 1;
 354         profile_get_boolean(ctx->profile, "options",
 355                             "defer_check_on_battery", 0, 1,
 356                             &defer_check_on_battery);
 357         if (!defer_check_on_battery)
 358                 batt = 0;
 359
 360         if ((ctx->options & E2F_OPT_FORCE) || bad_blocks_file || cflag)
 361                 return;
 362
 363         if (ctx->options & E2F_OPT_JOURNAL_ONLY)
 364                 goto skip;
 365
 366         lastcheck = fs->super->s_lastcheck;
 367         if (lastcheck > ctx->now)
 368                 lastcheck -= ctx->time_fudge;
 369         if ((fs->super->s_state & EXT2_ERROR_FS) ||
 370             !ext2fs_test_valid(fs))
 371                 reason = _(" contains a file system with errors");
 372         else if ((fs->super->s_state & EXT2_VALID_FS) == 0)
 373                 reason = _(" was not cleanly unmounted");
 374         else if (check_backup_super_block(ctx))
 375                 reason = _(" primary superblock features different from backup");
 376         else if ((fs->super->s_max_mnt_count > 0) &&
 377                  (fs->super->s_mnt_count >=
 378                   (unsigned) fs->super->s_max_mnt_count)) {
 379                 reason = _(" has been mounted %u times without being checked");
 380                 reason_arg = fs->super->s_mnt_count;
 381                 if (batt && (fs->super->s_mnt_count <
 382                              (unsigned) fs->super->s_max_mnt_count*2))
 383                         reason = 0;
 384         } else if (!broken_system_clock && fs->super->s_checkinterval &&
 385                    (ctx->now < lastcheck)) {
 386                 reason = _(" has filesystem last checked time in the future");
 387                 if (batt)
 388                         reason = 0;
 389         } else if (!broken_system_clock && fs->super->s_checkinterval &&
 390                    ((ctx->now - lastcheck) >=
 391                     ((time_t) fs->super->s_checkinterval))) {
 392                 reason = _(" has gone %u days without being checked");
 393                 reason_arg = (ctx->now - fs->super->s_lastcheck)/(3600*24);
 394                 if (batt && ((ctx->now - fs->super->s_lastcheck) <
 395                              fs->super->s_checkinterval*2))
 396                         reason = 0;
 397         }
 398         if (reason) {
 399                 log_out(ctx, "%s", ctx->device_name);
 400                 log_out(ctx, reason, reason_arg);
 401                 log_out(ctx, "%s", _(", check forced.\n"));
 402                 return;
 403         }
 404
 405         /*
 406          * Update the global counts from the block group counts.  This
 407          * is needed since modern kernels don't update the global
 408          * counts so as to avoid locking the entire file system.  So
 409          * if the filesystem is not unmounted cleanly, the global
 410          * counts may not be accurate.  Update them here if we can,
 411          * for the benefit of users who might examine the file system
 412          * using dumpe2fs.  (This is for cosmetic reasons only.)
 413          */
 414         clear_problem_context(&pctx);
 415         pctx.ino = fs->super->s_free_inodes_count;
 416         pctx.ino2 = ctx->free_inodes;
 417         if ((pctx.ino != pctx.ino2) &&
 418             !(ctx->options & E2F_OPT_READONLY) &&
 419             fix_problem(ctx, PR_0_FREE_INODE_COUNT, &pctx)) {
 420                 fs->super->s_free_inodes_count = ctx->free_inodes;
 421                 ext2fs_mark_super_dirty(fs);
 422         }
 423         clear_problem_context(&pctx);
 424         pctx.blk = ext2fs_free_blocks_count(fs->super);
 425         pctx.blk2 = ctx->free_blocks;
 426         if ((pctx.blk != pctx.blk2) &&
 427             !(ctx->options & E2F_OPT_READONLY) &&
 428             fix_problem(ctx, PR_0_FREE_BLOCK_COUNT, &pctx)) {
 429                 ext2fs_free_blocks_count_set(fs->super, ctx->free_blocks);
 430                 ext2fs_mark_super_dirty(fs);
 431         }
 432
 433         /* Print the summary message when we're skipping a full check */
 434         log_out(ctx, _("%s: clean, %u/%u files, %llu/%llu blocks"),
 435                 ctx->device_name,
 436                 fs->super->s_inodes_count - fs->super->s_free_inodes_count,
 437                 fs->super->s_inodes_count,
 438                 ext2fs_blocks_count(fs->super) -
 439                 ext2fs_free_blocks_count(fs->super),
 440                 ext2fs_blocks_count(fs->super));
 441         next_check = 100000;
 442         if (fs->super->s_max_mnt_count > 0) {
 443                 next_check = fs->super->s_max_mnt_count - fs->super->s_mnt_count;
 444                 if (next_check <= 0)
 445                         next_check = 1;
 446         }
 447         if (!broken_system_clock && fs->super->s_checkinterval &&
 448             ((ctx->now - fs->super->s_lastcheck) >= fs->super->s_checkinterval))
 449                 next_check = 1;
 450         if (next_check <= 5) {
 451                 if (next_check == 1) {
 452                         if (batt)
 453                                 log_out(ctx, "%s",
 454                                         _(" (check deferred; on battery)"));
 455                         else
 456                                 log_out(ctx, "%s",
 457                                         _(" (check after next mount)"));
 458                 } else
 459                         log_out(ctx, _(" (check in %ld mounts)"),
 460                                 next_check);
 461         }
 462         log_out(ctx, "\n");
 463 skip:
 464         ext2fs_close_free(&ctx->fs);
 465         e2fsck_free_context(ctx);
 466         exit(FSCK_OK);
 467 }
 468
 469 /*
 470  * For completion notice
 471  */
 472 struct percent_tbl {
 473         int     max_pass;
 474         int     table[32];
 475 };
 476 static struct percent_tbl e2fsck_tbl = {
 477         5, { 0, 70, 90, 92,  95, 100 }
 478 };
 479 static char bar[128], spaces[128];
 480
 481 static float calc_percent(struct percent_tbl *tbl, int pass, int curr,
 482                           int max)
 483 {
 484         float   percent;
 485
 486         if (pass <= 0)
 487                 return 0.0;
 488         if (pass > tbl->max_pass || max == 0)
 489                 return 100.0;
 490         percent = ((float) curr) / ((float) max);
 491         return ((percent * (tbl->table[pass] - tbl->table[pass-1]))
 492                 + tbl->table[pass-1]);
 493 }
 494
 495 void e2fsck_clear_progbar(e2fsck_t ctx)
 496 {
 497         if (!(ctx->flags & E2F_FLAG_PROG_BAR))
 498                 return;
 499
 500         printf("%s%s\r%s", ctx->start_meta, spaces + (sizeof(spaces) - 80),
 501                ctx->stop_meta);
 502         fflush(stdout);
 503         ctx->flags &= ~E2F_FLAG_PROG_BAR;
 504 }
 505
 506 int e2fsck_simple_progress(e2fsck_t ctx, const char *label, float percent,
 507                            unsigned int dpynum)
 508 {
 509         static const char spinner[] = "\\|/-";
 510         int     i;
 511         unsigned int    tick;
 512         struct timeval  tv;
 513         int dpywidth;
 514         int fixed_percent;
 515
 516         if (ctx->flags & E2F_FLAG_PROG_SUPPRESS)
 517                 return 0;
 518
 519         /*
 520          * Calculate the new progress position.  If the
 521          * percentage hasn't changed, then we skip out right
 522          * away.
 523          */
 524         fixed_percent = (int) ((10 * percent) + 0.5);
 525         if (ctx->progress_last_percent == fixed_percent)
 526                 return 0;
 527         ctx->progress_last_percent = fixed_percent;
 528
 529         /*
 530          * If we've already updated the spinner once within
 531          * the last 1/8th of a second, no point doing it
 532          * again.
 533          */
 534         gettimeofday(&tv, NULL);
 535         tick = (tv.tv_sec << 3) + (tv.tv_usec / (1000000 / 8));
 536         if ((tick == ctx->progress_last_time) &&
 537             (fixed_percent != 0) && (fixed_percent != 1000))
 538                 return 0;
 539         ctx->progress_last_time = tick;
 540
 541         /*
 542          * Advance the spinner, and note that the progress bar
 543          * will be on the screen
 544          */
 545         ctx->progress_pos = (ctx->progress_pos+1) & 3;
 546         ctx->flags |= E2F_FLAG_PROG_BAR;
 547
 548         dpywidth = 66 - strlen(label);
 549         dpywidth = 8 * (dpywidth / 8);
 550         if (dpynum)
 551                 dpywidth -= 8;
 552
 553         i = ((percent * dpywidth) + 50) / 100;
 554         printf("%s%s: |%s%s", ctx->start_meta, label,
 555                bar + (sizeof(bar) - (i+1)),
 556                spaces + (sizeof(spaces) - (dpywidth - i + 1)));
 557         if (fixed_percent == 1000)
 558                 fputc('|', stdout);
 559         else
 560                 fputc(spinner[ctx->progress_pos & 3], stdout);
 561         printf(" %4.1f%%  ", percent);
 562         if (dpynum)
 563                 printf("%u\r", dpynum);
 564         else
 565                 fputs(" \r", stdout);
 566         fputs(ctx->stop_meta, stdout);
 567
 568         if (fixed_percent == 1000)
 569                 e2fsck_clear_progbar(ctx);
 570         fflush(stdout);
 571
 572         return 0;
 573 }
 574
 575 static int e2fsck_update_progress(e2fsck_t ctx, int pass,
 576                                   unsigned long cur, unsigned long max)
 577 {
 578         char buf[1024];
 579         float percent;
 580
 581         if (pass == 0)
 582                 return 0;
 583
 584         if (ctx->progress_fd) {
 585                 snprintf(buf, sizeof(buf), "%d %lu %lu %s\n",
 586                          pass, cur, max, ctx->device_name);
 587                 write_all(ctx->progress_fd, buf, strlen(buf));
 588         } else {
 589                 percent = calc_percent(&e2fsck_tbl, pass, cur, max);
 590                 e2fsck_simple_progress(ctx, ctx->device_name,
 591                                        percent, 0);
 592         }
 593         return 0;
 594 }
 595
 596 #define PATH_SET "PATH=/sbin"
 597
 598 /*
 599  * Make sure 0,1,2 file descriptors are open, so that we don't open
 600  * the filesystem using the same file descriptor as stdout or stderr.
 601  */
 602 static void reserve_stdio_fds(void)
 603 {
 604         int     fd = 0;
 605
 606         while (fd <= 2) {
 607                 fd = open("/dev/null", O_RDWR);
 608                 if (fd < 0) {
 609                         fprintf(stderr, _("ERROR: Couldn't open "
 610                                 "/dev/null (%s)\n"),
 611                                 strerror(errno));
 612                         break;
 613                 }
 614         }
 615 }
 616
 617 #ifdef HAVE_SIGNAL_H
 618 static void signal_progress_on(int sig EXT2FS_ATTR((unused)))
 619 {
 620         e2fsck_t ctx = e2fsck_global_ctx;
 621
 622         if (!ctx)
 623                 return;
 624
 625         ctx->progress = e2fsck_update_progress;
 626 }
 627
 628 static void signal_progress_off(int sig EXT2FS_ATTR((unused)))
 629 {
 630         e2fsck_t ctx = e2fsck_global_ctx;
 631
 632         if (!ctx)
 633                 return;
 634
 635         e2fsck_clear_progbar(ctx);
 636         ctx->progress = 0;
 637 }
 638
 639 static void signal_cancel(int sig EXT2FS_ATTR((unused)))
 640 {
 641         e2fsck_t ctx = e2fsck_global_ctx;
 642
 643         if (!ctx)
 644                 exit(FSCK_CANCELED);
 645
 646         ctx->flags |= E2F_FLAG_CANCEL;
 647 }
 648 #endif
 649
 650 static void parse_extended_opts(e2fsck_t ctx, const char *opts)
 651 {
 652         char    *buf, *token, *next, *p, *arg;
 653         int     ea_ver;
 654         int     extended_usage = 0;
 655         unsigned long long reada_kb;
 656
 657         buf = string_copy(ctx, opts, 0);
 658         for (token = buf; token && *token; token = next) {
 659                 p = strchr(token, ',');
 660                 next = 0;
 661                 if (p) {
 662                         *p = 0;
 663                         next = p+1;
 664                 }
 665                 arg = strchr(token, '=');
 666                 if (arg) {
 667                         *arg = 0;
 668                         arg++;
 669                 }
 670                 if (strcmp(token, "ea_ver") == 0) {
 671                         if (!arg) {
 672                                 extended_usage++;
 673                                 continue;
 674                         }
 675                         ea_ver = strtoul(arg, &p, 0);
 676                         if (*p ||
 677                             ((ea_ver != 1) && (ea_ver != 2))) {
 678                                 fprintf(stderr, "%s",
 679                                         _("Invalid EA version.\n"));
 680                                 extended_usage++;
 681                                 continue;
 682                         }
 683                         ctx->ext_attr_ver = ea_ver;
 684                 } else if (strcmp(token, "readahead_kb") == 0) {
 685                         if (!arg) {
 686                                 extended_usage++;
 687                                 continue;
 688                         }
 689                         reada_kb = strtoull(arg, &p, 0);
 690                         if (*p) {
 691                                 fprintf(stderr, "%s",
 692                                         _("Invalid readahead buffer size.\n"));
 693                                 extended_usage++;
 694                                 continue;
 695                         }
 696                         ctx->readahead_kb = reada_kb;
 697                 } else if (strcmp(token, "fragcheck") == 0) {
 698                         ctx->options |= E2F_OPT_FRAGCHECK;
 699                         continue;
 700                 } else if (strcmp(token, "journal_only") == 0) {
 701                         if (arg) {
 702                                 extended_usage++;
 703                                 continue;
 704                         }
 705                         ctx->options |= E2F_OPT_JOURNAL_ONLY;
 706                 } else if (strcmp(token, "discard") == 0) {
 707                         ctx->options |= E2F_OPT_DISCARD;
 708                         continue;
 709                 } else if (strcmp(token, "nodiscard") == 0) {
 710                         ctx->options &= ~E2F_OPT_DISCARD;
 711                         continue;
 712                 } else if (strcmp(token, "log_filename") == 0) {
 713                         if (!arg)
 714                                 extended_usage++;
 715                         else
 716                                 ctx->log_fn = string_copy(ctx, arg, 0);
 717                         continue;
 718                 } else if (strcmp(token, "bmap2extent") == 0) {
 719                         ctx->options |= E2F_OPT_CONVERT_BMAP;
 720                         continue;
 721                 } else if (strcmp(token, "fixes_only") == 0) {
 722                         ctx->options |= E2F_OPT_FIXES_ONLY;
 723                         continue;
 724                 } else {
 725                         fprintf(stderr, _("Unknown extended option: %s\n"),
 726                                 token);
 727                         extended_usage++;
 728                 }
 729         }
 730         free(buf);
 731
 732         if (extended_usage) {
 733                 fputs(("\nExtended options are separated by commas, "
 734                        "and may take an argument which\n"
 735                        "is set off by an equals ('=') sign.  "
 736                        "Valid extended options are:\n"), stderr);
 737                 fputs(("\tea_ver=<ea_version (1 or 2)>\n"), stderr);
 738                 fputs(("\tfragcheck\n"), stderr);
 739                 fputs(("\tjournal_only\n"), stderr);
 740                 fputs(("\tdiscard\n"), stderr);
 741                 fputs(("\tnodiscard\n"), stderr);
 742                 fputs(("\treadahead_kb=<buffer size>\n"), stderr);
 743                 fputs(("\tbmap2extent\n"), stderr);
 744                 fputc('\n', stderr);
 745                 exit(1);
 746         }
 747 }
 748
 749 static void syntax_err_report(const char *filename, long err, int line_num)
 750 {
 751         fprintf(stderr,
 752                 _("Syntax error in e2fsck config file (%s, line #%d)\n\t%s\n"),
 753                 filename, line_num, error_message(err));
 754         exit(FSCK_ERROR);
 755 }
 756
 757 static const char *config_fn[] = { ROOT_SYSCONFDIR "/e2fsck.conf", 0 };
 758
 759 static errcode_t PRS(int argc, char *argv[], e2fsck_t *ret_ctx)
 760 {
 761         int             flush = 0;
 762         int             c, fd;
 763 #ifdef MTRACE
 764         extern void     *mallwatch;
 765 #endif
 766         e2fsck_t        ctx;
 767         errcode_t       retval;
 768 #ifdef HAVE_SIGNAL_H
 769         struct sigaction        sa;
 770 #endif
 771         char            *extended_opts = 0;
 772         char            *cp;
 773         int             res;            /* result of sscanf */
 774 #ifdef CONFIG_JBD_DEBUG
 775         char            *jbd_debug;
 776 #endif
 777         unsigned long long phys_mem_kb;
 778
 779         retval = e2fsck_allocate_context(&ctx);
 780         if (retval)
 781                 return retval;
 782
 783         *ret_ctx = ctx;
 784         e2fsck_global_ctx = ctx;
 785
 786         setvbuf(stdout, NULL, _IONBF, BUFSIZ);
 787         setvbuf(stderr, NULL, _IONBF, BUFSIZ);
 788         if (getenv("E2FSCK_FORCE_INTERACTIVE") || (isatty(0) && isatty(1))) {
 789                 ctx->interactive = 1;
 790         } else {
 791                 ctx->start_meta[0] = '\001';
 792                 ctx->stop_meta[0] = '\002';
 793         }
 794         memset(bar, '=', sizeof(bar)-1);
 795         memset(spaces, ' ', sizeof(spaces)-1);
 796         add_error_table(&et_ext2_error_table);
 797         add_error_table(&et_prof_error_table);
 798         blkid_get_cache(&ctx->blkid, NULL);
 799
 800         if (argc && *argv)
 801                 ctx->program_name = *argv;
 802         else
 803                 ctx->program_name = "e2fsck";
 804
 805         phys_mem_kb = get_memory_size() / 1024;
 806         ctx->readahead_kb = ~0ULL;
 807         while ((c = getopt(argc, argv, "panyrcC:B:dE:fvtFVM:b:I:j:P:l:L:N:SsDkz:")) != EOF)
 808                 switch (c) {
 809                 case 'C':
 810                         ctx->progress = e2fsck_update_progress;
 811                         res = sscanf(optarg, "%d", &ctx->progress_fd);
 812                         if (res != 1)
 813                                 goto sscanf_err;
 814
 815                         if (ctx->progress_fd < 0) {
 816                                 ctx->progress = 0;
 817                                 ctx->progress_fd = ctx->progress_fd * -1;
 818                         }
 819                         if (!ctx->progress_fd)
 820                                 break;
 821                         /* Validate the file descriptor to avoid disasters */
 822                         fd = dup(ctx->progress_fd);
 823                         if (fd < 0) {
 824                                 fprintf(stderr,
 825                                 _("Error validating file descriptor %d: %s\n"),
 826                                         ctx->progress_fd,
 827                                         error_message(errno));
 828                                 fatal_error(ctx,
 829                         _("Invalid completion information file descriptor"));
 830                         } else
 831                                 close(fd);
 832                         break;
 833                 case 'D':
 834                         ctx->options |= E2F_OPT_COMPRESS_DIRS;
 835                         break;
 836                 case 'E':
 837                         extended_opts = optarg;
 838                         break;
 839                 case 'p':
 840                 case 'a':
 841                         if (ctx->options & (E2F_OPT_YES|E2F_OPT_NO)) {
 842                         conflict_opt:
 843                                 fatal_error(ctx,
 844         _("Only one of the options -p/-a, -n or -y may be specified."));
 845                         }
 846                         ctx->options |= E2F_OPT_PREEN;
 847                         break;
 848                 case 'n':
 849                         if (ctx->options & (E2F_OPT_YES|E2F_OPT_PREEN))
 850                                 goto conflict_opt;
 851                         ctx->options |= E2F_OPT_NO;
 852                         break;
 853                 case 'y':
 854                         if (ctx->options & (E2F_OPT_PREEN|E2F_OPT_NO))
 855                                 goto conflict_opt;
 856                         ctx->options |= E2F_OPT_YES;
 857                         break;
 858                 case 't':
 859 #ifdef RESOURCE_TRACK
 860                         if (ctx->options & E2F_OPT_TIME)
 861                                 ctx->options |= E2F_OPT_TIME2;
 862                         else
 863                                 ctx->options |= E2F_OPT_TIME;
 864 #else
 865                         fprintf(stderr, _("The -t option is not "
 866                                 "supported on this version of e2fsck.\n"));
 867 #endif
 868                         break;
 869                 case 'c':
 870                         if (cflag++)
 871                                 ctx->options |= E2F_OPT_WRITECHECK;
 872                         ctx->options |= E2F_OPT_CHECKBLOCKS;
 873                         break;
 874                 case 'r':
 875                         /* What we do by default, anyway! */
 876                         break;
 877                 case 'b':
 878                         res = sscanf(optarg, "%llu", &ctx->use_superblock);
 879                         if (res != 1)
 880                                 goto sscanf_err;
 881                         ctx->flags |= E2F_FLAG_SB_SPECIFIED;
 882                         break;
 883                 case 'B':
 884                         ctx->blocksize = atoi(optarg);
 885                         break;
 886                 case 'I':
 887                         res = sscanf(optarg, "%d", &ctx->inode_buffer_blocks);
 888                         if (res != 1)
 889                                 goto sscanf_err;
 890                         break;
 891                 case 'j':
 892                         ctx->journal_name = blkid_get_devname(ctx->blkid,
 893                                                               optarg, NULL);
 894                         if (!ctx->journal_name) {
 895                                 com_err(ctx->program_name, 0,
 896                                         _("Unable to resolve '%s'"),
 897                                         optarg);
 898                                 fatal_error(ctx, 0);
 899                         }
 900                         break;
 901                 case 'P':
 902                         res = sscanf(optarg, "%d", &ctx->process_inode_size);
 903                         if (res != 1)
 904                                 goto sscanf_err;
 905                         break;
 906                 case 'L':
 907                         replace_bad_blocks++;
 908                 case 'l':
 909                         if (bad_blocks_file)
 910                                 free(bad_blocks_file);
 911                         bad_blocks_file = string_copy(ctx, optarg, 0);
 912                         break;
 913                 case 'd':
 914                         ctx->options |= E2F_OPT_DEBUG;
 915                         break;
 916                 case 'f':
 917                         ctx->options |= E2F_OPT_FORCE;
 918                         break;
 919                 case 'F':
 920                         flush = 1;
 921                         break;
 922                 case 'v':
 923                         verbose = 1;
 924                         break;
 925                 case 'V':
 926                         show_version_only = 1;
 927                         break;
 928 #ifdef MTRACE
 929                 case 'M':
 930                         mallwatch = (void *) strtol(optarg, NULL, 0);
 931                         break;
 932 #endif
 933                 case 'N':
 934                         ctx->device_name = string_copy(ctx, optarg, 0);
 935                         break;
 936                 case 'k':
 937                         keep_bad_blocks++;
 938                         break;
 939                 case 'z':
 940                         ctx->undo_file = optarg;
 941                         break;
 942                 default:
 943                         usage(ctx);
 944                 }
 945         if (show_version_only)
 946                 return 0;
 947         if (optind != argc - 1)
 948                 usage(ctx);
 949         if ((ctx->options & E2F_OPT_NO) &&
 950             (ctx->options & E2F_OPT_COMPRESS_DIRS)) {
 951                 com_err(ctx->program_name, 0, "%s",
 952                         _("The -n and -D options are incompatible."));
 953                 fatal_error(ctx, 0);
 954         }
 955         if ((ctx->options & E2F_OPT_NO) && cflag) {
 956                 com_err(ctx->program_name, 0, "%s",
 957                         _("The -n and -c options are incompatible."));
 958                 fatal_error(ctx, 0);
 959         }
 960         if ((ctx->options & E2F_OPT_NO) && bad_blocks_file) {
 961                 com_err(ctx->program_name, 0, "%s",
 962                         _("The -n and -l/-L options are incompatible."));
 963                 fatal_error(ctx, 0);
 964         }
 965         if (ctx->options & E2F_OPT_NO)
 966                 ctx->options |= E2F_OPT_READONLY;
 967
 968         ctx->io_options = strchr(argv[optind], '?');
 969         if (ctx->io_options)
 970                 *ctx->io_options++ = 0;
 971         ctx->filesystem_name = blkid_get_devname(ctx->blkid, argv[optind], 0);
 972         if (!ctx->filesystem_name) {
 973                 com_err(ctx->program_name, 0, _("Unable to resolve '%s'"),
 974                         argv[optind]);
 975                 fatal_error(ctx, 0);
 976         }
 977         if (extended_opts)
 978                 parse_extended_opts(ctx, extended_opts);
 979
 980         /* Complain about mutually exclusive rebuilding activities */
 981         if (getenv("E2FSCK_FIXES_ONLY"))
 982                 ctx->options |= E2F_OPT_FIXES_ONLY;
 983         if ((ctx->options & E2F_OPT_COMPRESS_DIRS) &&
 984             (ctx->options & E2F_OPT_FIXES_ONLY)) {
 985                 com_err(ctx->program_name, 0, "%s",
 986                         _("The -D and -E fixes_only options are incompatible."));
 987                 fatal_error(ctx, 0);
 988         }
 989         if ((ctx->options & E2F_OPT_CONVERT_BMAP) &&
 990             (ctx->options & E2F_OPT_FIXES_ONLY)) {
 991                 com_err(ctx->program_name, 0, "%s",
 992                         _("The -E bmap2extent and fixes_only options are incompatible."));
 993                 fatal_error(ctx, 0);
 994         }
 995
 996         if ((cp = getenv("E2FSCK_CONFIG")) != NULL)
 997                 config_fn[0] = cp;
 998         profile_set_syntax_err_cb(syntax_err_report);
 999         profile_init(config_fn, &ctx->profile);
1000
1001         profile_get_boolean(ctx->profile, "options", "report_time", 0, 0,
1002                             &c);
1003         if (c)
1004                 ctx->options |= E2F_OPT_TIME | E2F_OPT_TIME2;
1005         profile_get_boolean(ctx->profile, "options", "report_verbose", 0, 0,
1006                             &c);
1007         if (c)
1008                 verbose = 1;
1009
1010         if (ctx->readahead_kb == ~0ULL) {
1011                 profile_get_integer(ctx->profile, "options",
1012                                     "readahead_mem_pct", 0, -1, &c);
1013                 if (c >= 0 && c <= 100)
1014                         ctx->readahead_kb = phys_mem_kb * c / 100;
1015                 profile_get_integer(ctx->profile, "options",
1016                                     "readahead_kb", 0, -1, &c);
1017                 if (c >= 0)
1018                         ctx->readahead_kb = c;
1019                 if (ctx->readahead_kb != ~0ULL &&
1020                     ctx->readahead_kb > phys_mem_kb)
1021                         ctx->readahead_kb = phys_mem_kb;
1022         }
1023
1024         /* Turn off discard in read-only mode */
1025         if ((ctx->options & E2F_OPT_NO) &&
1026             (ctx->options & E2F_OPT_DISCARD))
1027                 ctx->options &= ~E2F_OPT_DISCARD;
1028
1029         if (flush) {
1030                 fd = open(ctx->filesystem_name, O_RDONLY, 0);
1031                 if (fd < 0) {
1032                         com_err("open", errno,
1033                                 _("while opening %s for flushing"),
1034                                 ctx->filesystem_name);
1035                         fatal_error(ctx, 0);
1036                 }
1037                 if ((retval = ext2fs_sync_device(fd, 1))) {
1038                         com_err("ext2fs_sync_device", retval,
1039                                 _("while trying to flush %s"),
1040                                 ctx->filesystem_name);
1041                         fatal_error(ctx, 0);
1042                 }
1043                 close(fd);
1044         }
1045         if (cflag && bad_blocks_file) {
1046                 fprintf(stderr, "%s", _("The -c and the -l/-L options may not "
1047                                         "be both used at the same time.\n"));
1048                 exit(FSCK_USAGE);
1049         }
1050 #ifdef HAVE_SIGNAL_H
1051         /*
1052          * Set up signal action
1053          */
1054         memset(&sa, 0, sizeof(struct sigaction));
1055         sa.sa_handler = signal_cancel;
1056         sigaction(SIGINT, &sa, 0);
1057         sigaction(SIGTERM, &sa, 0);
1058 #ifdef SA_RESTART
1059         sa.sa_flags = SA_RESTART;
1060 #endif
1061         sa.sa_handler = signal_progress_on;
1062         sigaction(SIGUSR1, &sa, 0);
1063         sa.sa_handler = signal_progress_off;
1064         sigaction(SIGUSR2, &sa, 0);
1065 #endif
1066
1067         /* Update our PATH to include /sbin if we need to run badblocks  */
1068         if (cflag) {
1069                 char *oldpath = getenv("PATH");
1070                 char *newpath;
1071                 int len = sizeof(PATH_SET) + 1;
1072
1073                 if (oldpath)
1074                         len += strlen(oldpath);
1075
1076                 newpath = malloc(len);
1077                 if (!newpath)
1078                         fatal_error(ctx, "Couldn't malloc() newpath");
1079                 strcpy(newpath, PATH_SET);
1080
1081                 if (oldpath) {
1082                         strcat(newpath, ":");
1083                         strcat(newpath, oldpath);
1084                 }
1085                 putenv(newpath);
1086         }
1087 #ifdef CONFIG_JBD_DEBUG
1088         jbd_debug = getenv("E2FSCK_JBD_DEBUG");
1089         if (jbd_debug) {
1090                 res = sscanf(jbd_debug, "%d", &journal_enable_debug);
1091                 if (res != 1) {
1092                         fprintf(stderr,
1093                                 _("E2FSCK_JBD_DEBUG \"%s\" not an integer\n\n"),
1094                                 jbd_debug);
1095                         exit (1);
1096                 }
1097         }
1098 #endif
1099         return 0;
1100
1101 sscanf_err:
1102         fprintf(stderr, _("\nInvalid non-numeric argument to -%c (\"%s\")\n\n"),
1103                 c, optarg);
1104         exit (1);
1105 }
1106
1107 static errcode_t try_open_fs(e2fsck_t ctx, int flags, io_manager io_ptr,
1108                              ext2_filsys *ret_fs)
1109 {
1110         errcode_t retval;
1111
1112         *ret_fs = NULL;
1113         if (ctx->superblock && ctx->blocksize) {
1114                 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
1115                                       flags, ctx->superblock, ctx->blocksize,
1116                                       io_ptr, ret_fs);
1117         } else if (ctx->superblock) {
1118                 int blocksize;
1119                 for (blocksize = EXT2_MIN_BLOCK_SIZE;
1120                      blocksize <= EXT2_MAX_BLOCK_SIZE; blocksize *= 2) {
1121                         if (*ret_fs) {
1122                                 ext2fs_free(*ret_fs);
1123                                 *ret_fs = NULL;
1124                         }
1125                         retval = ext2fs_open2(ctx->filesystem_name,
1126                                               ctx->io_options, flags,
1127                                               ctx->superblock, blocksize,
1128                                               io_ptr, ret_fs);
1129                         if (!retval)
1130                                 break;
1131                 }
1132         } else
1133                 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
1134                                       flags, 0, 0, io_ptr, ret_fs);
1135
1136         if (retval == 0) {
1137                 (*ret_fs)->priv_data = ctx;
1138                 e2fsck_set_bitmap_type(*ret_fs, EXT2FS_BMAP64_RBTREE,
1139                                        "default", NULL);
1140         }
1141         return retval;
1142 }
1143
1144 static const char *my_ver_string = E2FSPROGS_VERSION;
1145 static const char *my_ver_date = E2FSPROGS_DATE;
1146
1147 static errcode_t e2fsck_check_mmp(ext2_filsys fs, e2fsck_t ctx)
1148 {
1149         struct mmp_struct *mmp_s;
1150         unsigned int mmp_check_interval;
1151         errcode_t retval = 0;
1152         struct problem_context pctx;
1153         unsigned int wait_time = 0;
1154
1155         clear_problem_context(&pctx);
1156         if (fs->mmp_buf == NULL) {
1157                 retval = ext2fs_get_mem(fs->blocksize, &fs->mmp_buf);
1158                 if (retval)
1159                         goto check_error;
1160         }
1161
1162         retval = ext2fs_mmp_read(fs, fs->super->s_mmp_block, fs->mmp_buf);
1163         if (retval)
1164                 goto check_error;
1165
1166         mmp_s = fs->mmp_buf;
1167
1168         mmp_check_interval = fs->super->s_mmp_update_interval;
1169         if (mmp_check_interval < EXT4_MMP_MIN_CHECK_INTERVAL)
1170                 mmp_check_interval = EXT4_MMP_MIN_CHECK_INTERVAL;
1171
1172         /*
1173          * If check_interval in MMP block is larger, use that instead of
1174          * check_interval from the superblock.
1175          */
1176         if (mmp_s->mmp_check_interval > mmp_check_interval)
1177                 mmp_check_interval = mmp_s->mmp_check_interval;
1178
1179         wait_time = mmp_check_interval * 2 + 1;
1180
1181         if (mmp_s->mmp_seq == EXT4_MMP_SEQ_CLEAN)
1182                 retval = 0;
1183         else if (mmp_s->mmp_seq == EXT4_MMP_SEQ_FSCK)
1184                 retval = EXT2_ET_MMP_FSCK_ON;
1185         else if (mmp_s->mmp_seq > EXT4_MMP_SEQ_MAX)
1186                 retval = EXT2_ET_MMP_UNKNOWN_SEQ;
1187
1188         if (retval)
1189                 goto check_error;
1190
1191         /* Print warning if e2fck will wait for more than 20 secs. */
1192         if (verbose || wait_time > EXT4_MMP_MIN_CHECK_INTERVAL * 4) {
1193                 log_out(ctx, _("MMP interval is %u seconds and total wait "
1194                                "time is %u seconds. Please wait...\n"),
1195                         mmp_check_interval, wait_time * 2);
1196         }
1197
1198         return 0;
1199
1200 check_error:
1201
1202         if (retval == EXT2_ET_MMP_BAD_BLOCK) {
1203                 if (fix_problem(ctx, PR_0_MMP_INVALID_BLK, &pctx)) {
1204                         fs->super->s_mmp_block = 0;
1205                         ext2fs_mark_super_dirty(fs);
1206                         retval = 0;
1207                 }
1208         } else if (retval == EXT2_ET_MMP_FAILED) {
1209                 com_err(ctx->program_name, retval, "%s",
1210                         _("while checking MMP block"));
1211                 dump_mmp_msg(fs->mmp_buf, NULL);
1212         } else if (retval == EXT2_ET_MMP_FSCK_ON ||
1213                    retval == EXT2_ET_MMP_UNKNOWN_SEQ) {
1214                 com_err(ctx->program_name, retval, "%s",
1215                         _("while checking MMP block"));
1216                 dump_mmp_msg(fs->mmp_buf,
1217                              _("If you are sure the filesystem is not "
1218                                "in use on any node, run:\n"
1219                                "'tune2fs -f -E clear_mmp {device}'\n"));
1220         } else if (retval == EXT2_ET_MMP_MAGIC_INVALID) {
1221                 if (fix_problem(ctx, PR_0_MMP_INVALID_MAGIC, &pctx)) {
1222                         ext2fs_mmp_clear(fs);
1223                         retval = 0;
1224                 }
1225         } else if (retval == EXT2_ET_MMP_CSUM_INVALID) {
1226                 if (fix_problem(ctx, PR_0_MMP_CSUM_INVALID, &pctx)) {
1227                         ext2fs_mmp_clear(fs);
1228                         retval = 0;
1229                 }
1230         } else
1231                 com_err(ctx->program_name, retval, "%s",
1232                         _("while reading MMP block"));
1233         return retval;
1234 }
1235
1236 static int e2fsck_setup_tdb(e2fsck_t ctx, io_manager *io_ptr)
1237 {
1238         errcode_t retval = ENOMEM;
1239         char *tdb_dir = NULL, *tdb_file = NULL;
1240         char *dev_name, *tmp_name;
1241         int free_tdb_dir = 0;
1242
1243         /* (re)open a specific undo file */
1244         if (ctx->undo_file && ctx->undo_file[0] != 0) {
1245                 retval = set_undo_io_backing_manager(*io_ptr);
1246                 if (retval)
1247                         goto err;
1248                 *io_ptr = undo_io_manager;
1249                 retval = set_undo_io_backup_file(ctx->undo_file);
1250                 if (retval)
1251                         goto err;
1252                 printf(_("Overwriting existing filesystem; this can be undone "
1253                          "using the command:\n"
1254                          "    e2undo %s %s\n\n"),
1255                         ctx->undo_file, ctx->filesystem_name);
1256                 return retval;
1257         }
1258
1259         /*
1260          * Configuration via a conf file would be
1261          * nice
1262          */
1263         tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
1264         if (!tdb_dir) {
1265                 profile_get_string(ctx->profile, "defaults",
1266                                    "undo_dir", 0, "/var/lib/e2fsprogs",
1267                                    &tdb_dir);
1268                 free_tdb_dir = 1;
1269         }
1270
1271         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
1272             access(tdb_dir, W_OK)) {
1273                 if (free_tdb_dir)
1274                         free(tdb_dir);
1275                 return 0;
1276         }
1277
1278         tmp_name = strdup(ctx->filesystem_name);
1279         if (!tmp_name)
1280                 goto errout;
1281         dev_name = basename(tmp_name);
1282         tdb_file = malloc(strlen(tdb_dir) + 8 + strlen(dev_name) + 7 + 1);
1283         if (!tdb_file) {
1284                 free(tmp_name);
1285                 goto errout;
1286         }
1287         sprintf(tdb_file, "%s/e2fsck-%s.e2undo", tdb_dir, dev_name);
1288         free(tmp_name);
1289
1290         if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
1291                 retval = errno;
1292                 com_err(ctx->program_name, retval,
1293                         _("while trying to delete %s"), tdb_file);
1294                 goto errout;
1295         }
1296
1297         retval = set_undo_io_backing_manager(*io_ptr);
1298         if (retval)
1299                 goto errout;
1300         *io_ptr = undo_io_manager;
1301         retval = set_undo_io_backup_file(tdb_file);
1302         if (retval)
1303                 goto errout;
1304         printf(_("Overwriting existing filesystem; this can be undone "
1305                  "using the command:\n"
1306                  "    e2undo %s %s\n\n"), tdb_file, ctx->filesystem_name);
1307
1308         if (free_tdb_dir)
1309                 free(tdb_dir);
1310         free(tdb_file);
1311         return 0;
1312
1313 errout:
1314         if (free_tdb_dir)
1315                 free(tdb_dir);
1316         free(tdb_file);
1317 err:
1318         com_err(ctx->program_name, retval, "%s",
1319                 _("while trying to setup undo file\n"));
1320         return retval;
1321 }
1322
1323 int main (int argc, char *argv[])
1324 {
1325         errcode_t       retval = 0, retval2 = 0, orig_retval = 0;
1326         int             exit_value = FSCK_OK;
1327         ext2_filsys     fs = 0;
1328         io_manager      io_ptr;
1329         struct ext2_super_block *sb;
1330         const char      *lib_ver_date;
1331         int             my_ver, lib_ver;
1332         e2fsck_t        ctx;
1333         blk64_t         orig_superblock;
1334         struct problem_context pctx;
1335         int flags, run_result, was_changed;
1336         int journal_size;
1337         int sysval, sys_page_size = 4096;
1338         int old_bitmaps;
1339         __u32 features[3];
1340         char *cp;
1341         unsigned int qtype_bits = 0;
1342         enum quota_type qtype;
1343
1344         clear_problem_context(&pctx);
1345         sigcatcher_setup();
1346 #ifdef MTRACE
1347         mtrace();
1348 #endif
1349 #ifdef MCHECK
1350         mcheck(0);
1351 #endif
1352 #ifdef ENABLE_NLS
1353         setlocale(LC_MESSAGES, "");
1354         setlocale(LC_CTYPE, "");
1355         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1356         textdomain(NLS_CAT_NAME);
1357         set_com_err_gettext(gettext);
1358 #endif
1359         my_ver = ext2fs_parse_version_string(my_ver_string);
1360         lib_ver = ext2fs_get_library_version(0, &lib_ver_date);
1361         if (my_ver > lib_ver) {
1362                 fprintf( stderr, "%s",
1363                          _("Error: ext2fs library version out of date!\n"));
1364                 show_version_only++;
1365         }
1366
1367         retval = PRS(argc, argv, &ctx);
1368         if (retval) {
1369                 com_err("e2fsck", retval, "%s",
1370                         _("while trying to initialize program"));
1371                 exit(FSCK_ERROR);
1372         }
1373         reserve_stdio_fds();
1374
1375         set_up_logging(ctx);
1376         if (ctx->logf) {
1377                 int i;
1378                 fputs("E2fsck run: ", ctx->logf);
1379                 for (i = 0; i < argc; i++) {
1380                         if (i)
1381                                 fputc(' ', ctx->logf);
1382                         fputs(argv[i], ctx->logf);
1383                 }
1384                 fputc('\n', ctx->logf);
1385         }
1386
1387         init_resource_track(&ctx->global_rtrack, NULL);
1388         if (!(ctx->options & E2F_OPT_PREEN) || show_version_only)
1389                 log_err(ctx, "e2fsck %s (%s)\n", my_ver_string,
1390                          my_ver_date);
1391
1392         if (show_version_only) {
1393                 log_err(ctx, _("\tUsing %s, %s\n"),
1394                         error_message(EXT2_ET_BASE), lib_ver_date);
1395                 exit(FSCK_OK);
1396         }
1397
1398         check_mount(ctx);
1399
1400         if (!(ctx->options & E2F_OPT_PREEN) &&
1401             !(ctx->options & E2F_OPT_NO) &&
1402             !(ctx->options & E2F_OPT_YES)) {
1403                 if (!ctx->interactive)
1404                         fatal_error(ctx,
1405                                     _("need terminal for interactive repairs"));
1406         }
1407         ctx->superblock = ctx->use_superblock;
1408
1409         flags = EXT2_FLAG_SKIP_MMP;
1410 restart:
1411 #ifdef CONFIG_TESTIO_DEBUG
1412         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1413                 io_ptr = test_io_manager;
1414                 test_io_backing_manager = unix_io_manager;
1415         } else
1416 #endif
1417                 io_ptr = unix_io_manager;
1418         flags |= EXT2_FLAG_NOFREE_ON_ERROR;
1419         profile_get_boolean(ctx->profile, "options", "old_bitmaps", 0, 0,
1420                             &old_bitmaps);
1421         if (!old_bitmaps)
1422                 flags |= EXT2_FLAG_64BITS;
1423         if ((ctx->options & E2F_OPT_READONLY) == 0) {
1424                 flags |= EXT2_FLAG_RW;
1425                 if (!(ctx->mount_flags & EXT2_MF_ISROOT &&
1426                       ctx->mount_flags & EXT2_MF_READONLY))
1427                         flags |= EXT2_FLAG_EXCLUSIVE;
1428                 if ((ctx->mount_flags & EXT2_MF_READONLY) &&
1429                     (ctx->options & E2F_OPT_FORCE))
1430                         flags &= ~EXT2_FLAG_EXCLUSIVE;
1431         }
1432
1433         if (ctx->undo_file) {
1434                 retval = e2fsck_setup_tdb(ctx, &io_ptr);
1435                 if (retval)
1436                         exit(FSCK_ERROR);
1437         }
1438
1439         ctx->openfs_flags = flags;
1440         retval = try_open_fs(ctx, flags, io_ptr, &fs);
1441
1442         if (!ctx->superblock && !(ctx->options & E2F_OPT_PREEN) &&
1443             !(ctx->flags & E2F_FLAG_SB_SPECIFIED) &&
1444             ((retval == EXT2_ET_BAD_MAGIC) ||
1445              (retval == EXT2_ET_SB_CSUM_INVALID) ||
1446              (retval == EXT2_ET_CORRUPT_SUPERBLOCK) ||
1447              ((retval == 0) && (retval2 = ext2fs_check_desc(fs))))) {
1448                 if (retval) {
1449                         pctx.errcode = retval;
1450                         fix_problem(ctx, PR_0_OPEN_FAILED, &pctx);
1451                 }
1452                 if (retval2) {
1453                         pctx.errcode = retval2;
1454                         fix_problem(ctx, PR_0_CHECK_DESC_FAILED, &pctx);
1455                 }
1456                 pctx.errcode = 0;
1457                 if (retval2 == ENOMEM || retval2 == EXT2_ET_NO_MEMORY) {
1458                         retval = retval2;
1459                         goto failure;
1460                 }
1461                 if (fs->flags & EXT2_FLAG_NOFREE_ON_ERROR) {
1462                         ext2fs_free(fs);
1463                         fs = NULL;
1464                 }
1465                 if (!fs || (fs->group_desc_count > 1)) {
1466                         log_out(ctx, _("%s: %s trying backup blocks...\n"),
1467                                 ctx->program_name,
1468                                 retval ? _("Superblock invalid,") :
1469                                 _("Group descriptors look bad..."));
1470                         orig_superblock = ctx->superblock;
1471                         get_backup_sb(ctx, fs, ctx->filesystem_name, io_ptr);
1472                         if (fs)
1473                                 ext2fs_close_free(&fs);
1474                         orig_retval = retval;
1475                         retval = try_open_fs(ctx, flags, io_ptr, &fs);
1476                         if ((orig_retval == 0) && retval != 0) {
1477                                 if (fs)
1478                                         ext2fs_close_free(&fs);
1479                                 log_out(ctx, _("%s: %s while using the "
1480                                                "backup blocks"),
1481                                         ctx->program_name,
1482                                         error_message(retval));
1483                                 log_out(ctx, _("%s: going back to original "
1484                                                "superblock\n"),
1485                                         ctx->program_name);
1486                                 ctx->superblock = orig_superblock;
1487                                 retval = try_open_fs(ctx, flags, io_ptr, &fs);
1488                         }
1489                 }
1490         }
1491         if (((retval == EXT2_ET_UNSUPP_FEATURE) ||
1492              (retval == EXT2_ET_RO_UNSUPP_FEATURE)) &&
1493             fs && fs->super) {
1494                 sb = fs->super;
1495                 features[0] = (sb->s_feature_compat &
1496                                ~EXT2_LIB_FEATURE_COMPAT_SUPP);
1497                 features[1] = (sb->s_feature_incompat &
1498                                ~EXT2_LIB_FEATURE_INCOMPAT_SUPP);
1499                 features[2] = (sb->s_feature_ro_compat &
1500                                ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
1501                 if (features[0] || features[1] || features[2])
1502                         goto print_unsupp_features;
1503         }
1504 failure:
1505         if (retval) {
1506                 if (orig_retval)
1507                         retval = orig_retval;
1508                 com_err(ctx->program_name, retval, _("while trying to open %s"),
1509                         ctx->filesystem_name);
1510                 if (retval == EXT2_ET_REV_TOO_HIGH) {
1511                         log_out(ctx, "%s",
1512                                 _("The filesystem revision is apparently "
1513                                   "too high for this version of e2fsck.\n"
1514                                   "(Or the filesystem superblock "
1515                                   "is corrupt)\n\n"));
1516                         fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
1517                 } else if (retval == EXT2_ET_SHORT_READ)
1518                         log_out(ctx, "%s",
1519                                 _("Could this be a zero-length partition?\n"));
1520                 else if ((retval == EPERM) || (retval == EACCES))
1521                         log_out(ctx, _("You must have %s access to the "
1522                                        "filesystem or be root\n"),
1523                                (ctx->options & E2F_OPT_READONLY) ?
1524                                "r/o" : "r/w");
1525                 else if (retval == ENXIO)
1526                         log_out(ctx, "%s",
1527                                 _("Possibly non-existent or swap device?\n"));
1528                 else if (retval == EBUSY)
1529                         log_out(ctx, "%s", _("Filesystem mounted or opened "
1530                                          "exclusively by another program?\n"));
1531                 else if (retval == ENOENT)
1532                         log_out(ctx, "%s",
1533                                 _("Possibly non-existent device?\n"));
1534 #ifdef EROFS
1535                 else if (retval == EROFS)
1536                         log_out(ctx, "%s", _("Disk write-protected; use the "
1537                                              "-n option to do a read-only\n"
1538                                              "check of the device.\n"));
1539 #endif
1540                 else {
1541                         fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
1542                         if (retval == EXT2_ET_BAD_MAGIC)
1543                                 check_plausibility(ctx->filesystem_name,
1544                                                    CHECK_FS_EXIST, NULL);
1545                 }
1546                 fatal_error(ctx, 0);
1547         }
1548         /*
1549          * We only update the master superblock because (a) paranoia;
1550          * we don't want to corrupt the backup superblocks, and (b) we
1551          * don't need to update the mount count and last checked
1552          * fields in the backup superblock (the kernel doesn't update
1553          * the backup superblocks anyway).  With newer versions of the
1554          * library this flag is set by ext2fs_open2(), but we set this
1555          * here just to be sure.  (No, we don't support e2fsck running
1556          * with some other libext2fs than the one that it was shipped
1557          * with, but just in case....)
1558          */
1559         fs->flags |= EXT2_FLAG_MASTER_SB_ONLY;
1560
1561         if (!(ctx->flags & E2F_FLAG_GOT_DEVSIZE)) {
1562                 __u32 blocksize = EXT2_BLOCK_SIZE(fs->super);
1563                 int need_restart = 0;
1564
1565                 pctx.errcode = ext2fs_get_device_size2(ctx->filesystem_name,
1566                                                        blocksize,
1567                                                        &ctx->num_blocks);
1568                 /*
1569                  * The floppy driver refuses to allow anyone else to
1570                  * open the device if has been opened with O_EXCL;
1571                  * this is unlike other block device drivers in Linux.
1572                  * To handle this, we close the filesystem and then
1573                  * reopen the filesystem after we get the device size.
1574                  */
1575                 if (pctx.errcode == EBUSY) {
1576                         ext2fs_close_free(&fs);
1577                         need_restart++;
1578                         pctx.errcode =
1579                                 ext2fs_get_device_size2(ctx->filesystem_name,
1580                                                         blocksize,
1581                                                         &ctx->num_blocks);
1582                 }
1583                 if (pctx.errcode == EXT2_ET_UNIMPLEMENTED)
1584                         ctx->num_blocks = 0;
1585                 else if (pctx.errcode) {
1586                         fix_problem(ctx, PR_0_GETSIZE_ERROR, &pctx);
1587                         ctx->flags |= E2F_FLAG_ABORT;
1588                         fatal_error(ctx, 0);
1589                 }
1590                 ctx->flags |= E2F_FLAG_GOT_DEVSIZE;
1591                 if (need_restart)
1592                         goto restart;
1593         }
1594
1595         ctx->fs = fs;
1596         fs->now = ctx->now;
1597         sb = fs->super;
1598
1599         if (sb->s_rev_level > E2FSCK_CURRENT_REV) {
1600                 com_err(ctx->program_name, EXT2_ET_REV_TOO_HIGH,
1601                         _("while trying to open %s"),
1602                         ctx->filesystem_name);
1603         get_newer:
1604                 fatal_error(ctx, _("Get a newer version of e2fsck!"));
1605         }
1606
1607         /*
1608          * Set the device name, which is used whenever we print error
1609          * or informational messages to the user.
1610          */
1611         if (ctx->device_name == 0 &&
1612             (sb->s_volume_name[0] != 0)) {
1613                 ctx->device_name = string_copy(ctx, sb->s_volume_name,
1614                                                sizeof(sb->s_volume_name));
1615         }
1616         if (ctx->device_name == 0)
1617                 ctx->device_name = string_copy(ctx, ctx->filesystem_name, 0);
1618         for (cp = ctx->device_name; *cp; cp++)
1619                 if (isspace(*cp) || *cp == ':')
1620                         *cp = '_';
1621
1622         ehandler_init(fs->io);
1623
1624         if (ext2fs_has_feature_mmp(fs->super) &&
1625             (flags & EXT2_FLAG_SKIP_MMP)) {
1626                 if (e2fsck_check_mmp(fs, ctx))
1627                         fatal_error(ctx, 0);
1628
1629                 /*
1630                  * Restart in order to reopen fs but this time start mmp.
1631                  */
1632                 ext2fs_close_free(&ctx->fs);
1633                 flags &= ~EXT2_FLAG_SKIP_MMP;
1634                 goto restart;
1635         }
1636
1637         if (ctx->logf)
1638                 fprintf(ctx->logf, "Filesystem UUID: %s\n",
1639                         e2p_uuid2str(sb->s_uuid));
1640
1641         /*
1642          * Make sure the ext3 superblock fields are consistent.
1643          */
1644         if ((ctx->mount_flags & (EXT2_MF_MOUNTED | EXT2_MF_BUSY)) == 0) {
1645                 retval = e2fsck_check_ext3_journal(ctx);
1646                 if (retval) {
1647                         com_err(ctx->program_name, retval,
1648                                 _("while checking ext3 journal for %s"),
1649                                 ctx->device_name);
1650                         fatal_error(ctx, 0);
1651                 }
1652         }
1653
1654         /*
1655          * Check to see if we need to do ext3-style recovery.  If so,
1656          * do it, and then restart the fsck.
1657          */
1658         if (ext2fs_has_feature_journal_needs_recovery(sb)) {
1659                 if (ctx->options & E2F_OPT_READONLY) {
1660                         log_out(ctx, "%s",
1661                                 _("Warning: skipping journal recovery because "
1662                                   "doing a read-only filesystem check.\n"));
1663                         io_channel_flush(ctx->fs->io);
1664                 } else {
1665                         if (ctx->flags & E2F_FLAG_RESTARTED) {
1666                                 /*
1667                                  * Whoops, we attempted to run the
1668                                  * journal twice.  This should never
1669                                  * happen, unless the hardware or
1670                                  * device driver is being bogus.
1671                                  */
1672                                 com_err(ctx->program_name, 0,
1673                                         _("unable to set superblock flags "
1674                                           "on %s\n"), ctx->device_name);
1675                                 fatal_error(ctx, 0);
1676                         }
1677                         retval = e2fsck_run_ext3_journal(ctx);
1678                         if (retval) {
1679                                 com_err(ctx->program_name, retval,
1680                                 _("while recovering ext3 journal of %s"),
1681                                         ctx->device_name);
1682                                 fatal_error(ctx, 0);
1683                         }
1684                         ext2fs_close_free(&ctx->fs);
1685                         ctx->flags |= E2F_FLAG_RESTARTED;
1686                         goto restart;
1687                 }
1688         }
1689
1690         /*
1691          * Check for compatibility with the feature sets.  We need to
1692          * be more stringent than ext2fs_open().
1693          */
1694         features[0] = sb->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP;
1695         features[1] = sb->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP;
1696         features[2] = (sb->s_feature_ro_compat &
1697                        ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
1698 print_unsupp_features:
1699         if (features[0] || features[1] || features[2]) {
1700                 int     i, j;
1701                 __u32   *mask = features, m;
1702
1703                 log_err(ctx, _("%s has unsupported feature(s):"),
1704                         ctx->filesystem_name);
1705
1706                 for (i=0; i <3; i++,mask++) {
1707                         for (j=0,m=1; j < 32; j++, m<<=1) {
1708                                 if (*mask & m)
1709                                         log_err(ctx, " %s",
1710                                                 e2p_feature2string(i, m));
1711                         }
1712                 }
1713                 log_err(ctx, "\n");
1714                 goto get_newer;
1715         }
1716
1717         /*
1718          * If the user specified a specific superblock, presumably the
1719          * master superblock has been trashed.  So we mark the
1720          * superblock as dirty, so it can be written out.
1721          */
1722         if (ctx->superblock &&
1723             !(ctx->options & E2F_OPT_READONLY))
1724                 ext2fs_mark_super_dirty(fs);
1725
1726         /*
1727          * Calculate the number of filesystem blocks per pagesize.  If
1728          * fs->blocksize > page_size, set the number of blocks per
1729          * pagesize to 1 to avoid division by zero errors.
1730          */
1731 #ifdef _SC_PAGESIZE
1732         sysval = sysconf(_SC_PAGESIZE);
1733         if (sysval > 0)
1734                 sys_page_size = sysval;
1735 #endif /* _SC_PAGESIZE */
1736         ctx->blocks_per_page = sys_page_size / fs->blocksize;
1737         if (ctx->blocks_per_page == 0)
1738                 ctx->blocks_per_page = 1;
1739
1740         if (ctx->superblock)
1741                 set_latch_flags(PR_LATCH_RELOC, PRL_LATCHED, 0);
1742         ext2fs_mark_valid(fs);
1743         check_super_block(ctx);
1744         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1745                 fatal_error(ctx, 0);
1746         check_if_skip(ctx);
1747         check_resize_inode(ctx);
1748         if (bad_blocks_file)
1749                 read_bad_blocks_file(ctx, bad_blocks_file, replace_bad_blocks);
1750         else if (cflag)
1751                 read_bad_blocks_file(ctx, 0, !keep_bad_blocks); /* Test disk */
1752         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1753                 fatal_error(ctx, 0);
1754
1755         /*
1756          * Mark the system as valid, 'til proven otherwise
1757          */
1758         ext2fs_mark_valid(fs);
1759
1760         retval = ext2fs_read_bb_inode(fs, &fs->badblocks);
1761         if (retval) {
1762                 log_out(ctx, _("%s: %s while reading bad blocks inode\n"),
1763                         ctx->program_name, error_message(retval));
1764                 preenhalt(ctx);
1765                 log_out(ctx, "%s", _("This doesn't bode well, "
1766                                      "but we'll try to go on...\n"));
1767         }
1768
1769         /*
1770          * Save the journal size in megabytes.
1771          * Try and use the journal size from the backup else let e2fsck
1772          * find the default journal size.
1773          */
1774         if (sb->s_jnl_backup_type == EXT3_JNL_BACKUP_BLOCKS)
1775                 journal_size = (sb->s_jnl_blocks[15] << (32 - 20)) |
1776                                (sb->s_jnl_blocks[16] >> 20);
1777         else
1778                 journal_size = -1;
1779
1780         if (ext2fs_has_feature_quota(sb)) {
1781                 /* Quotas were enabled. Do quota accounting during fsck. */
1782                 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1783                         if (*quota_sb_inump(sb, qtype) != 0)
1784                                 qtype_bits |= 1 << qtype;
1785                 }
1786
1787                 quota_init_context(&ctx->qctx, ctx->fs, qtype_bits);
1788         }
1789
1790         run_result = e2fsck_run(ctx);
1791         e2fsck_clear_progbar(ctx);
1792
1793         if (!ctx->invalid_bitmaps &&
1794             (ctx->flags & E2F_FLAG_JOURNAL_INODE)) {
1795                 if (fix_problem(ctx, PR_6_RECREATE_JOURNAL, &pctx)) {
1796                         if (journal_size < 1024)
1797                                 journal_size = ext2fs_default_journal_size(ext2fs_blocks_count(fs->super));
1798                         if (journal_size < 0) {
1799                                 ext2fs_clear_feature_journal(fs->super);
1800                                 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1801                                 log_out(ctx, "%s: Couldn't determine "
1802                                         "journal size\n", ctx->program_name);
1803                                 goto no_journal;
1804                         }
1805                         log_out(ctx, _("Creating journal (%d blocks): "),
1806                                journal_size);
1807                         fflush(stdout);
1808                         retval = ext2fs_add_journal_inode(fs,
1809                                                           journal_size, 0);
1810                         if (retval) {
1811                                 log_out(ctx, "%s: while trying to create "
1812                                         "journal\n", error_message(retval));
1813                                 goto no_journal;
1814                         }
1815                         log_out(ctx, "%s", _(" Done.\n"));
1816                         log_out(ctx, "%s",
1817                                 _("\n*** journal has been regenerated ***\n"));
1818                 }
1819         }
1820 no_journal:
1821
1822         if (run_result & E2F_FLAG_ABORT) {
1823                 fatal_error(ctx, _("aborted"));
1824         } else if (run_result & E2F_FLAG_CANCEL) {
1825                 log_out(ctx, _("%s: e2fsck canceled.\n"), ctx->device_name ?
1826                         ctx->device_name : ctx->filesystem_name);
1827                 exit_value |= FSCK_CANCELED;
1828         } else if (ctx->qctx && !ctx->invalid_bitmaps) {
1829                 int needs_writeout;
1830
1831                 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1832                         if (((1 << qtype) & qtype_bits) == 0)
1833                                 continue;
1834                         needs_writeout = 0;
1835                         pctx.num = qtype;
1836                         retval = quota_compare_and_update(ctx->qctx, qtype,
1837                                                           &needs_writeout);
1838                         if ((retval || needs_writeout) &&
1839                             fix_problem(ctx, PR_6_UPDATE_QUOTAS, &pctx))
1840                                 quota_write_inode(ctx->qctx, 1 << qtype);
1841                 }
1842                 quota_release_context(&ctx->qctx);
1843         }
1844
1845         if (run_result == E2F_FLAG_RESTART) {
1846                 log_out(ctx, "%s",
1847                         _("Restarting e2fsck from the beginning...\n"));
1848                 retval = e2fsck_reset_context(ctx);
1849                 if (retval) {
1850                         com_err(ctx->program_name, retval, "%s",
1851                                 _("while resetting context"));
1852                         fatal_error(ctx, 0);
1853                 }
1854                 ext2fs_close_free(&ctx->fs);
1855                 goto restart;
1856         }
1857
1858 #ifdef MTRACE
1859         mtrace_print("Cleanup");
1860 #endif
1861         was_changed = ext2fs_test_changed(fs);
1862         if (!(ctx->flags & E2F_FLAG_RUN_RETURN) &&
1863             !(ctx->options & E2F_OPT_READONLY)) {
1864                 if (ext2fs_test_valid(fs)) {
1865                         if (!(sb->s_state & EXT2_VALID_FS))
1866                                 exit_value |= FSCK_NONDESTRUCT;
1867                         sb->s_state = EXT2_VALID_FS;
1868                         if (check_backup_super_block(ctx))
1869                                 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1870                 } else
1871                         sb->s_state &= ~EXT2_VALID_FS;
1872                 if (!(ctx->flags & E2F_FLAG_TIME_INSANE))
1873                         sb->s_lastcheck = ctx->now;
1874                 sb->s_mnt_count = 0;
1875                 memset(((char *) sb) + EXT4_S_ERR_START, 0, EXT4_S_ERR_LEN);
1876                 pctx.errcode = ext2fs_set_gdt_csum(ctx->fs);
1877                 if (pctx.errcode)
1878                         fix_problem(ctx, PR_6_SET_BG_CHECKSUM, &pctx);
1879                 ext2fs_mark_super_dirty(fs);
1880         }
1881
1882         e2fsck_write_bitmaps(ctx);
1883         if (fs->flags & EXT2_FLAG_DIRTY) {
1884                 pctx.errcode = ext2fs_flush(ctx->fs);
1885                 if (pctx.errcode)
1886                         fix_problem(ctx, PR_6_FLUSH_FILESYSTEM, &pctx);
1887         }
1888         pctx.errcode = io_channel_flush(ctx->fs->io);
1889         if (pctx.errcode)
1890                 fix_problem(ctx, PR_6_IO_FLUSH, &pctx);
1891
1892         if (was_changed) {
1893                 exit_value |= FSCK_NONDESTRUCT;
1894                 if (!(ctx->options & E2F_OPT_PREEN))
1895                         log_out(ctx, _("\n%s: ***** FILE SYSTEM WAS "
1896                                        "MODIFIED *****\n"),
1897                                 ctx->device_name);
1898                 if (ctx->mount_flags & EXT2_MF_ISROOT) {
1899                         log_out(ctx, _("%s: ***** REBOOT SYSTEM *****\n"),
1900                                 ctx->device_name);
1901                         exit_value |= FSCK_REBOOT;
1902                 }
1903         }
1904         if (!ext2fs_test_valid(fs) ||
1905             ((exit_value & FSCK_CANCELED) &&
1906              (sb->s_state & EXT2_ERROR_FS))) {
1907                 log_out(ctx, _("\n%s: ********** WARNING: Filesystem still has "
1908                                "errors **********\n\n"), ctx->device_name);
1909                 exit_value |= FSCK_UNCORRECTED;
1910                 exit_value &= ~FSCK_NONDESTRUCT;
1911         }
1912         if (exit_value & FSCK_CANCELED) {
1913                 int     allow_cancellation;
1914
1915                 profile_get_boolean(ctx->profile, "options",
1916                                     "allow_cancellation", 0, 0,
1917                                     &allow_cancellation);
1918                 exit_value &= ~FSCK_NONDESTRUCT;
1919                 if (allow_cancellation && ext2fs_test_valid(fs) &&
1920                     (sb->s_state & EXT2_VALID_FS) &&
1921                     !(sb->s_state & EXT2_ERROR_FS))
1922                         exit_value = 0;
1923         } else
1924                 show_stats(ctx);
1925
1926         print_resource_track(ctx, NULL, &ctx->global_rtrack, ctx->fs->io);
1927
1928         ext2fs_close_free(&ctx->fs);
1929         free(ctx->journal_name);
1930
1931         e2fsck_free_context(ctx);
1932         remove_error_table(&et_ext2_error_table);
1933         remove_error_table(&et_prof_error_table);
1934         return exit_value;
1935 }