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 "jfs_user.h"
  57 #include "../version.h"
  58
  59 /* Command line options */
  60 static int cflag;               /* check disk */
  61 static int show_version_only;
  62 static int verbose;
  63
  64 static int replace_bad_blocks;
  65 static int keep_bad_blocks;
  66 static char *bad_blocks_file;
  67
  68 e2fsck_t e2fsck_global_ctx;     /* Try your very best not to use this! */
  69
  70 #ifdef CONFIG_JBD_DEBUG         /* Enabled by configure --enable-jbd-debug */
  71 int journal_enable_debug = -1;
  72 #endif
  73
  74 static void usage(e2fsck_t ctx)
  75 {
  76         fprintf(stderr,
  77                 _("Usage: %s [-panyrcdfktvDFV] [-b superblock] [-B blocksize]\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, "optimize_extents") == 0) {
 713                         ctx->options &= ~E2F_OPT_NOOPT_EXTENTS;
 714                         continue;
 715                 } else if (strcmp(token, "no_optimize_extents") == 0) {
 716                         ctx->options |= E2F_OPT_NOOPT_EXTENTS;
 717                         continue;
 718                 } else if (strcmp(token, "inode_count_fullmap") == 0) {
 719                         ctx->options |= E2F_OPT_ICOUNT_FULLMAP;
 720                         continue;
 721                 } else if (strcmp(token, "no_inode_count_fullmap") == 0) {
 722                         ctx->options &= ~E2F_OPT_ICOUNT_FULLMAP;
 723                         continue;
 724                 } else if (strcmp(token, "log_filename") == 0) {
 725                         if (!arg)
 726                                 extended_usage++;
 727                         else
 728                                 ctx->log_fn = string_copy(ctx, arg, 0);
 729                         continue;
 730                 } else if (strcmp(token, "bmap2extent") == 0) {
 731                         ctx->options |= E2F_OPT_CONVERT_BMAP;
 732                         continue;
 733                 } else if (strcmp(token, "fixes_only") == 0) {
 734                         ctx->options |= E2F_OPT_FIXES_ONLY;
 735                         continue;
 736                 } else {
 737                         fprintf(stderr, _("Unknown extended option: %s\n"),
 738                                 token);
 739                         extended_usage++;
 740                 }
 741         }
 742         free(buf);
 743
 744         if (extended_usage) {
 745                 fputs(_("\nExtended options are separated by commas, "
 746                        "and may take an argument which\n"
 747                        "is set off by an equals ('=') sign.  "
 748                        "Valid extended options are:\n\n"), stderr);
 749                 fputs(_("\tea_ver=<ea_version (1 or 2)>\n"), stderr);
 750                 fputs("\tfragcheck\n", stderr);
 751                 fputs("\tjournal_only\n", stderr);
 752                 fputs("\tdiscard\n", stderr);
 753                 fputs("\tnodiscard\n", stderr);
 754                 fputs("\toptimize_extents\n", stderr);
 755                 fputs("\tno_optimize_extents\n", stderr);
 756                 fputs("\tinode_count_fullmap\n", stderr);
 757                 fputs("\tno_inode_count_fullmap\n", stderr);
 758                 fputs(_("\treadahead_kb=<buffer size>\n"), stderr);
 759                 fputs("\tbmap2extent\n", stderr);
 760                 fputc('\n', stderr);
 761                 exit(1);
 762         }
 763 }
 764
 765 static void syntax_err_report(const char *filename, long err, int line_num)
 766 {
 767         fprintf(stderr,
 768                 _("Syntax error in e2fsck config file (%s, line #%d)\n\t%s\n"),
 769                 filename, line_num, error_message(err));
 770         exit(FSCK_ERROR);
 771 }
 772
 773 static const char *config_fn[] = { ROOT_SYSCONFDIR "/e2fsck.conf", 0 };
 774
 775 static errcode_t PRS(int argc, char *argv[], e2fsck_t *ret_ctx)
 776 {
 777         int             flush = 0;
 778         int             c, fd;
 779 #ifdef MTRACE
 780         extern void     *mallwatch;
 781 #endif
 782         e2fsck_t        ctx;
 783         errcode_t       retval;
 784 #ifdef HAVE_SIGNAL_H
 785         struct sigaction        sa;
 786 #endif
 787         char            *extended_opts = 0;
 788         char            *cp;
 789         int             res;            /* result of sscanf */
 790 #ifdef CONFIG_JBD_DEBUG
 791         char            *jbd_debug;
 792 #endif
 793         unsigned long long phys_mem_kb;
 794
 795         retval = e2fsck_allocate_context(&ctx);
 796         if (retval)
 797                 return retval;
 798
 799         *ret_ctx = ctx;
 800         e2fsck_global_ctx = ctx;
 801
 802         setvbuf(stdout, NULL, _IONBF, BUFSIZ);
 803         setvbuf(stderr, NULL, _IONBF, BUFSIZ);
 804         if (getenv("E2FSCK_FORCE_INTERACTIVE") || (isatty(0) && isatty(1))) {
 805                 ctx->interactive = 1;
 806         } else {
 807                 ctx->start_meta[0] = '\001';
 808                 ctx->stop_meta[0] = '\002';
 809         }
 810         memset(bar, '=', sizeof(bar)-1);
 811         memset(spaces, ' ', sizeof(spaces)-1);
 812         add_error_table(&et_ext2_error_table);
 813         add_error_table(&et_prof_error_table);
 814         blkid_get_cache(&ctx->blkid, NULL);
 815
 816         if (argc && *argv)
 817                 ctx->program_name = *argv;
 818         else
 819                 ctx->program_name = "e2fsck";
 820
 821         phys_mem_kb = get_memory_size() / 1024;
 822         ctx->readahead_kb = ~0ULL;
 823         while ((c = getopt(argc, argv, "panyrcC:B:dE:fvtFVM:b:I:j:P:l:L:N:SsDkz:")) != EOF)
 824                 switch (c) {
 825                 case 'C':
 826                         ctx->progress = e2fsck_update_progress;
 827                         res = sscanf(optarg, "%d", &ctx->progress_fd);
 828                         if (res != 1)
 829                                 goto sscanf_err;
 830
 831                         if (ctx->progress_fd < 0) {
 832                                 ctx->progress = 0;
 833                                 ctx->progress_fd = ctx->progress_fd * -1;
 834                         }
 835                         if (!ctx->progress_fd)
 836                                 break;
 837                         /* Validate the file descriptor to avoid disasters */
 838                         fd = dup(ctx->progress_fd);
 839                         if (fd < 0) {
 840                                 fprintf(stderr,
 841                                 _("Error validating file descriptor %d: %s\n"),
 842                                         ctx->progress_fd,
 843                                         error_message(errno));
 844                                 fatal_error(ctx,
 845                         _("Invalid completion information file descriptor"));
 846                         } else
 847                                 close(fd);
 848                         break;
 849                 case 'D':
 850                         ctx->options |= E2F_OPT_COMPRESS_DIRS;
 851                         break;
 852                 case 'E':
 853                         extended_opts = optarg;
 854                         break;
 855                 case 'p':
 856                 case 'a':
 857                         if (ctx->options & (E2F_OPT_YES|E2F_OPT_NO)) {
 858                         conflict_opt:
 859                                 fatal_error(ctx,
 860         _("Only one of the options -p/-a, -n or -y may be specified."));
 861                         }
 862                         ctx->options |= E2F_OPT_PREEN;
 863                         break;
 864                 case 'n':
 865                         if (ctx->options & (E2F_OPT_YES|E2F_OPT_PREEN))
 866                                 goto conflict_opt;
 867                         ctx->options |= E2F_OPT_NO;
 868                         break;
 869                 case 'y':
 870                         if (ctx->options & (E2F_OPT_PREEN|E2F_OPT_NO))
 871                                 goto conflict_opt;
 872                         ctx->options |= E2F_OPT_YES;
 873                         break;
 874                 case 't':
 875 #ifdef RESOURCE_TRACK
 876                         if (ctx->options & E2F_OPT_TIME)
 877                                 ctx->options |= E2F_OPT_TIME2;
 878                         else
 879                                 ctx->options |= E2F_OPT_TIME;
 880 #else
 881                         fprintf(stderr, _("The -t option is not "
 882                                 "supported on this version of e2fsck.\n"));
 883 #endif
 884                         break;
 885                 case 'c':
 886                         if (cflag++)
 887                                 ctx->options |= E2F_OPT_WRITECHECK;
 888                         ctx->options |= E2F_OPT_CHECKBLOCKS;
 889                         break;
 890                 case 'r':
 891                         /* What we do by default, anyway! */
 892                         break;
 893                 case 'b':
 894                         res = sscanf(optarg, "%llu", &ctx->use_superblock);
 895                         if (res != 1)
 896                                 goto sscanf_err;
 897                         ctx->flags |= E2F_FLAG_SB_SPECIFIED;
 898                         break;
 899                 case 'B':
 900                         ctx->blocksize = atoi(optarg);
 901                         break;
 902                 case 'I':
 903                         res = sscanf(optarg, "%d", &ctx->inode_buffer_blocks);
 904                         if (res != 1)
 905                                 goto sscanf_err;
 906                         break;
 907                 case 'j':
 908                         ctx->journal_name = blkid_get_devname(ctx->blkid,
 909                                                               optarg, NULL);
 910                         if (!ctx->journal_name) {
 911                                 com_err(ctx->program_name, 0,
 912                                         _("Unable to resolve '%s'"),
 913                                         optarg);
 914                                 fatal_error(ctx, 0);
 915                         }
 916                         break;
 917                 case 'P':
 918                         res = sscanf(optarg, "%d", &ctx->process_inode_size);
 919                         if (res != 1)
 920                                 goto sscanf_err;
 921                         break;
 922                 case 'L':
 923                         replace_bad_blocks++;
 924                 case 'l':
 925                         if (bad_blocks_file)
 926                                 free(bad_blocks_file);
 927                         bad_blocks_file = string_copy(ctx, optarg, 0);
 928                         break;
 929                 case 'd':
 930                         ctx->options |= E2F_OPT_DEBUG;
 931                         break;
 932                 case 'f':
 933                         ctx->options |= E2F_OPT_FORCE;
 934                         break;
 935                 case 'F':
 936                         flush = 1;
 937                         break;
 938                 case 'v':
 939                         verbose = 1;
 940                         break;
 941                 case 'V':
 942                         show_version_only = 1;
 943                         break;
 944 #ifdef MTRACE
 945                 case 'M':
 946                         mallwatch = (void *) strtol(optarg, NULL, 0);
 947                         break;
 948 #endif
 949                 case 'N':
 950                         ctx->device_name = string_copy(ctx, optarg, 0);
 951                         break;
 952                 case 'k':
 953                         keep_bad_blocks++;
 954                         break;
 955                 case 'z':
 956                         ctx->undo_file = optarg;
 957                         break;
 958                 default:
 959                         usage(ctx);
 960                 }
 961         if (show_version_only)
 962                 return 0;
 963         if (optind != argc - 1)
 964                 usage(ctx);
 965         if ((ctx->options & E2F_OPT_NO) &&
 966             (ctx->options & E2F_OPT_COMPRESS_DIRS)) {
 967                 com_err(ctx->program_name, 0, "%s",
 968                         _("The -n and -D options are incompatible."));
 969                 fatal_error(ctx, 0);
 970         }
 971         if ((ctx->options & E2F_OPT_NO) && cflag) {
 972                 com_err(ctx->program_name, 0, "%s",
 973                         _("The -n and -c options are incompatible."));
 974                 fatal_error(ctx, 0);
 975         }
 976         if ((ctx->options & E2F_OPT_NO) && bad_blocks_file) {
 977                 com_err(ctx->program_name, 0, "%s",
 978                         _("The -n and -l/-L options are incompatible."));
 979                 fatal_error(ctx, 0);
 980         }
 981         if (ctx->options & E2F_OPT_NO)
 982                 ctx->options |= E2F_OPT_READONLY;
 983
 984         ctx->io_options = strchr(argv[optind], '?');
 985         if (ctx->io_options)
 986                 *ctx->io_options++ = 0;
 987         ctx->filesystem_name = blkid_get_devname(ctx->blkid, argv[optind], 0);
 988         if (!ctx->filesystem_name) {
 989                 com_err(ctx->program_name, 0, _("Unable to resolve '%s'"),
 990                         argv[optind]);
 991                 fatal_error(ctx, 0);
 992         }
 993         if (extended_opts)
 994                 parse_extended_opts(ctx, extended_opts);
 995
 996         /* Complain about mutually exclusive rebuilding activities */
 997         if (getenv("E2FSCK_FIXES_ONLY"))
 998                 ctx->options |= E2F_OPT_FIXES_ONLY;
 999         if ((ctx->options & E2F_OPT_COMPRESS_DIRS) &&
1000             (ctx->options & E2F_OPT_FIXES_ONLY)) {
1001                 com_err(ctx->program_name, 0, "%s",
1002                         _("The -D and -E fixes_only options are incompatible."));
1003                 fatal_error(ctx, 0);
1004         }
1005         if ((ctx->options & E2F_OPT_CONVERT_BMAP) &&
1006             (ctx->options & E2F_OPT_FIXES_ONLY)) {
1007                 com_err(ctx->program_name, 0, "%s",
1008                         _("The -E bmap2extent and fixes_only options are incompatible."));
1009                 fatal_error(ctx, 0);
1010         }
1011
1012         if ((cp = getenv("E2FSCK_CONFIG")) != NULL)
1013                 config_fn[0] = cp;
1014         profile_set_syntax_err_cb(syntax_err_report);
1015         profile_init(config_fn, &ctx->profile);
1016
1017         profile_get_boolean(ctx->profile, "options", "report_time", 0, 0,
1018                             &c);
1019         if (c)
1020                 ctx->options |= E2F_OPT_TIME | E2F_OPT_TIME2;
1021         profile_get_boolean(ctx->profile, "options", "report_verbose", 0, 0,
1022                             &c);
1023         if (c)
1024                 verbose = 1;
1025
1026         profile_get_boolean(ctx->profile, "options", "no_optimize_extents",
1027                             0, 0, &c);
1028         if (c)
1029                 ctx->options |= E2F_OPT_NOOPT_EXTENTS;
1030
1031         profile_get_boolean(ctx->profile, "options", "inode_count_fullmap",
1032                             0, 0, &c);
1033         if (c)
1034                 ctx->options |= E2F_OPT_ICOUNT_FULLMAP;
1035
1036         if (ctx->readahead_kb == ~0ULL) {
1037                 profile_get_integer(ctx->profile, "options",
1038                                     "readahead_mem_pct", 0, -1, &c);
1039                 if (c >= 0 && c <= 100)
1040                         ctx->readahead_kb = phys_mem_kb * c / 100;
1041                 profile_get_integer(ctx->profile, "options",
1042                                     "readahead_kb", 0, -1, &c);
1043                 if (c >= 0)
1044                         ctx->readahead_kb = c;
1045                 if (ctx->readahead_kb != ~0ULL &&
1046                     ctx->readahead_kb > phys_mem_kb)
1047                         ctx->readahead_kb = phys_mem_kb;
1048         }
1049
1050         /* Turn off discard in read-only mode */
1051         if ((ctx->options & E2F_OPT_NO) &&
1052             (ctx->options & E2F_OPT_DISCARD))
1053                 ctx->options &= ~E2F_OPT_DISCARD;
1054
1055         if (flush) {
1056                 fd = open(ctx->filesystem_name, O_RDONLY, 0);
1057                 if (fd < 0) {
1058                         com_err("open", errno,
1059                                 _("while opening %s for flushing"),
1060                                 ctx->filesystem_name);
1061                         fatal_error(ctx, 0);
1062                 }
1063                 if ((retval = ext2fs_sync_device(fd, 1))) {
1064                         com_err("ext2fs_sync_device", retval,
1065                                 _("while trying to flush %s"),
1066                                 ctx->filesystem_name);
1067                         fatal_error(ctx, 0);
1068                 }
1069                 close(fd);
1070         }
1071         if (cflag && bad_blocks_file) {
1072                 fprintf(stderr, "%s", _("The -c and the -l/-L options may not "
1073                                         "be both used at the same time.\n"));
1074                 exit(FSCK_USAGE);
1075         }
1076 #ifdef HAVE_SIGNAL_H
1077         /*
1078          * Set up signal action
1079          */
1080         memset(&sa, 0, sizeof(struct sigaction));
1081         sa.sa_handler = signal_cancel;
1082         sigaction(SIGINT, &sa, 0);
1083         sigaction(SIGTERM, &sa, 0);
1084 #ifdef SA_RESTART
1085         sa.sa_flags = SA_RESTART;
1086 #endif
1087         sa.sa_handler = signal_progress_on;
1088         sigaction(SIGUSR1, &sa, 0);
1089         sa.sa_handler = signal_progress_off;
1090         sigaction(SIGUSR2, &sa, 0);
1091 #endif
1092
1093         /* Update our PATH to include /sbin if we need to run badblocks  */
1094         if (cflag) {
1095                 char *oldpath = getenv("PATH");
1096                 char *newpath;
1097                 int len = sizeof(PATH_SET) + 1;
1098
1099                 if (oldpath)
1100                         len += strlen(oldpath);
1101
1102                 newpath = malloc(len);
1103                 if (!newpath)
1104                         fatal_error(ctx, "Couldn't malloc() newpath");
1105                 strcpy(newpath, PATH_SET);
1106
1107                 if (oldpath) {
1108                         strcat(newpath, ":");
1109                         strcat(newpath, oldpath);
1110                 }
1111                 putenv(newpath);
1112         }
1113 #ifdef CONFIG_JBD_DEBUG
1114         jbd_debug = getenv("E2FSCK_JBD_DEBUG");
1115         if (jbd_debug) {
1116                 res = sscanf(jbd_debug, "%d", &journal_enable_debug);
1117                 if (res != 1) {
1118                         fprintf(stderr,
1119                                 _("E2FSCK_JBD_DEBUG \"%s\" not an integer\n\n"),
1120                                 jbd_debug);
1121                         exit (1);
1122                 }
1123         }
1124 #endif
1125         return 0;
1126
1127 sscanf_err:
1128         fprintf(stderr, _("\nInvalid non-numeric argument to -%c (\"%s\")\n\n"),
1129                 c, optarg);
1130         exit (1);
1131 }
1132
1133 static errcode_t try_open_fs(e2fsck_t ctx, int flags, io_manager io_ptr,
1134                              ext2_filsys *ret_fs)
1135 {
1136         errcode_t retval;
1137
1138         *ret_fs = NULL;
1139         if (ctx->superblock && ctx->blocksize) {
1140                 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
1141                                       flags, ctx->superblock, ctx->blocksize,
1142                                       io_ptr, ret_fs);
1143         } else if (ctx->superblock) {
1144                 int blocksize;
1145                 for (blocksize = EXT2_MIN_BLOCK_SIZE;
1146                      blocksize <= EXT2_MAX_BLOCK_SIZE; blocksize *= 2) {
1147                         if (*ret_fs) {
1148                                 ext2fs_free(*ret_fs);
1149                                 *ret_fs = NULL;
1150                         }
1151                         retval = ext2fs_open2(ctx->filesystem_name,
1152                                               ctx->io_options, flags,
1153                                               ctx->superblock, blocksize,
1154                                               io_ptr, ret_fs);
1155                         if (!retval)
1156                                 break;
1157                 }
1158         } else
1159                 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
1160                                       flags, 0, 0, io_ptr, ret_fs);
1161
1162         if (retval == 0) {
1163                 (*ret_fs)->priv_data = ctx;
1164                 e2fsck_set_bitmap_type(*ret_fs, EXT2FS_BMAP64_RBTREE,
1165                                        "default", NULL);
1166         }
1167         return retval;
1168 }
1169
1170 static const char *my_ver_string = E2FSPROGS_VERSION;
1171 static const char *my_ver_date = E2FSPROGS_DATE;
1172
1173 static errcode_t e2fsck_check_mmp(ext2_filsys fs, e2fsck_t ctx)
1174 {
1175         struct mmp_struct *mmp_s;
1176         unsigned int mmp_check_interval;
1177         errcode_t retval = 0;
1178         struct problem_context pctx;
1179         unsigned int wait_time = 0;
1180
1181         clear_problem_context(&pctx);
1182         if (fs->mmp_buf == NULL) {
1183                 retval = ext2fs_get_mem(fs->blocksize, &fs->mmp_buf);
1184                 if (retval)
1185                         goto check_error;
1186         }
1187
1188         retval = ext2fs_mmp_read(fs, fs->super->s_mmp_block, fs->mmp_buf);
1189         if (retval)
1190                 goto check_error;
1191
1192         mmp_s = fs->mmp_buf;
1193
1194         mmp_check_interval = fs->super->s_mmp_update_interval;
1195         if (mmp_check_interval < EXT4_MMP_MIN_CHECK_INTERVAL)
1196                 mmp_check_interval = EXT4_MMP_MIN_CHECK_INTERVAL;
1197
1198         /*
1199          * If check_interval in MMP block is larger, use that instead of
1200          * check_interval from the superblock.
1201          */
1202         if (mmp_s->mmp_check_interval > mmp_check_interval)
1203                 mmp_check_interval = mmp_s->mmp_check_interval;
1204
1205         wait_time = mmp_check_interval * 2 + 1;
1206
1207         if (mmp_s->mmp_seq == EXT4_MMP_SEQ_CLEAN)
1208                 retval = 0;
1209         else if (mmp_s->mmp_seq == EXT4_MMP_SEQ_FSCK)
1210                 retval = EXT2_ET_MMP_FSCK_ON;
1211         else if (mmp_s->mmp_seq > EXT4_MMP_SEQ_MAX)
1212                 retval = EXT2_ET_MMP_UNKNOWN_SEQ;
1213
1214         if (retval)
1215                 goto check_error;
1216
1217         /* Print warning if e2fsck will wait for more than 20 secs. */
1218         if (verbose || wait_time > EXT4_MMP_MIN_CHECK_INTERVAL * 4) {
1219                 log_out(ctx, _("MMP interval is %u seconds and total wait "
1220                                "time is %u seconds. Please wait...\n"),
1221                         mmp_check_interval, wait_time * 2);
1222         }
1223
1224         return 0;
1225
1226 check_error:
1227
1228         if (retval == EXT2_ET_MMP_BAD_BLOCK) {
1229                 if (fix_problem(ctx, PR_0_MMP_INVALID_BLK, &pctx)) {
1230                         fs->super->s_mmp_block = 0;
1231                         ext2fs_mark_super_dirty(fs);
1232                         retval = 0;
1233                 }
1234         } else if (retval == EXT2_ET_MMP_FAILED) {
1235                 com_err(ctx->program_name, retval, "%s",
1236                         _("while checking MMP block"));
1237                 dump_mmp_msg(fs->mmp_buf, NULL);
1238         } else if (retval == EXT2_ET_MMP_FSCK_ON ||
1239                    retval == EXT2_ET_MMP_UNKNOWN_SEQ) {
1240                 com_err(ctx->program_name, retval, "%s",
1241                         _("while checking MMP block"));
1242                 dump_mmp_msg(fs->mmp_buf,
1243                              _("If you are sure the filesystem is not "
1244                                "in use on any node, run:\n"
1245                                "'tune2fs -f -E clear_mmp {device}'\n"));
1246         } else if (retval == EXT2_ET_MMP_MAGIC_INVALID) {
1247                 if (fix_problem(ctx, PR_0_MMP_INVALID_MAGIC, &pctx)) {
1248                         ext2fs_mmp_clear(fs);
1249                         retval = 0;
1250                 }
1251         } else if (retval == EXT2_ET_MMP_CSUM_INVALID) {
1252                 if (fix_problem(ctx, PR_0_MMP_CSUM_INVALID, &pctx)) {
1253                         ext2fs_mmp_clear(fs);
1254                         retval = 0;
1255                 }
1256         } else
1257                 com_err(ctx->program_name, retval, "%s",
1258                         _("while reading MMP block"));
1259         return retval;
1260 }
1261
1262 static int e2fsck_setup_tdb(e2fsck_t ctx, io_manager *io_ptr)
1263 {
1264         errcode_t retval = ENOMEM;
1265         char *tdb_dir = NULL, *tdb_file = NULL;
1266         char *dev_name, *tmp_name;
1267         int free_tdb_dir = 0;
1268
1269         /* (re)open a specific undo file */
1270         if (ctx->undo_file && ctx->undo_file[0] != 0) {
1271                 retval = set_undo_io_backing_manager(*io_ptr);
1272                 if (retval)
1273                         goto err;
1274                 *io_ptr = undo_io_manager;
1275                 retval = set_undo_io_backup_file(ctx->undo_file);
1276                 if (retval)
1277                         goto err;
1278                 printf(_("Overwriting existing filesystem; this can be undone "
1279                          "using the command:\n"
1280                          "    e2undo %s %s\n\n"),
1281                         ctx->undo_file, ctx->filesystem_name);
1282                 return retval;
1283         }
1284
1285         /*
1286          * Configuration via a conf file would be
1287          * nice
1288          */
1289         tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
1290         if (!tdb_dir) {
1291                 profile_get_string(ctx->profile, "defaults",
1292                                    "undo_dir", 0, "/var/lib/e2fsprogs",
1293                                    &tdb_dir);
1294                 free_tdb_dir = 1;
1295         }
1296
1297         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
1298             access(tdb_dir, W_OK)) {
1299                 if (free_tdb_dir)
1300                         free(tdb_dir);
1301                 return 0;
1302         }
1303
1304         tmp_name = strdup(ctx->filesystem_name);
1305         if (!tmp_name)
1306                 goto errout;
1307         dev_name = basename(tmp_name);
1308         tdb_file = malloc(strlen(tdb_dir) + 8 + strlen(dev_name) + 7 + 1);
1309         if (!tdb_file) {
1310                 free(tmp_name);
1311                 goto errout;
1312         }
1313         sprintf(tdb_file, "%s/e2fsck-%s.e2undo", tdb_dir, dev_name);
1314         free(tmp_name);
1315
1316         if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
1317                 retval = errno;
1318                 com_err(ctx->program_name, retval,
1319                         _("while trying to delete %s"), tdb_file);
1320                 goto errout;
1321         }
1322
1323         retval = set_undo_io_backing_manager(*io_ptr);
1324         if (retval)
1325                 goto errout;
1326         *io_ptr = undo_io_manager;
1327         retval = set_undo_io_backup_file(tdb_file);
1328         if (retval)
1329                 goto errout;
1330         printf(_("Overwriting existing filesystem; this can be undone "
1331                  "using the command:\n"
1332                  "    e2undo %s %s\n\n"), tdb_file, ctx->filesystem_name);
1333
1334         if (free_tdb_dir)
1335                 free(tdb_dir);
1336         free(tdb_file);
1337         return 0;
1338
1339 errout:
1340         if (free_tdb_dir)
1341                 free(tdb_dir);
1342         free(tdb_file);
1343 err:
1344         com_err(ctx->program_name, retval, "%s",
1345                 _("while trying to setup undo file\n"));
1346         return retval;
1347 }
1348
1349 int main (int argc, char *argv[])
1350 {
1351         errcode_t       retval = 0, retval2 = 0, orig_retval = 0;
1352         int             exit_value = FSCK_OK;
1353         ext2_filsys     fs = 0;
1354         io_manager      io_ptr;
1355         struct ext2_super_block *sb;
1356         const char      *lib_ver_date;
1357         int             my_ver, lib_ver;
1358         e2fsck_t        ctx;
1359         blk64_t         orig_superblock;
1360         struct problem_context pctx;
1361         int flags, run_result, was_changed;
1362         int journal_size;
1363         int sysval, sys_page_size = 4096;
1364         int old_bitmaps;
1365         __u32 features[3];
1366         char *cp;
1367         enum quota_type qtype;
1368
1369         clear_problem_context(&pctx);
1370         sigcatcher_setup();
1371 #ifdef MTRACE
1372         mtrace();
1373 #endif
1374 #ifdef MCHECK
1375         mcheck(0);
1376 #endif
1377 #ifdef ENABLE_NLS
1378         setlocale(LC_MESSAGES, "");
1379         setlocale(LC_CTYPE, "");
1380         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1381         textdomain(NLS_CAT_NAME);
1382         set_com_err_gettext(gettext);
1383 #endif
1384         my_ver = ext2fs_parse_version_string(my_ver_string);
1385         lib_ver = ext2fs_get_library_version(0, &lib_ver_date);
1386         if (my_ver > lib_ver) {
1387                 fprintf( stderr, "%s",
1388                          _("Error: ext2fs library version out of date!\n"));
1389                 show_version_only++;
1390         }
1391
1392         retval = PRS(argc, argv, &ctx);
1393         if (retval) {
1394                 com_err("e2fsck", retval, "%s",
1395                         _("while trying to initialize program"));
1396                 exit(FSCK_ERROR);
1397         }
1398         reserve_stdio_fds();
1399
1400         set_up_logging(ctx);
1401         if (ctx->logf) {
1402                 int i;
1403                 fputs("E2fsck run: ", ctx->logf);
1404                 for (i = 0; i < argc; i++) {
1405                         if (i)
1406                                 fputc(' ', ctx->logf);
1407                         fputs(argv[i], ctx->logf);
1408                 }
1409                 fputc('\n', ctx->logf);
1410         }
1411
1412         init_resource_track(&ctx->global_rtrack, NULL);
1413         if (!(ctx->options & E2F_OPT_PREEN) || show_version_only)
1414                 log_err(ctx, "e2fsck %s (%s)\n", my_ver_string,
1415                          my_ver_date);
1416
1417         if (show_version_only) {
1418                 log_err(ctx, _("\tUsing %s, %s\n"),
1419                         error_message(EXT2_ET_BASE), lib_ver_date);
1420                 exit(FSCK_OK);
1421         }
1422
1423         check_mount(ctx);
1424
1425         if (!(ctx->options & E2F_OPT_PREEN) &&
1426             !(ctx->options & E2F_OPT_NO) &&
1427             !(ctx->options & E2F_OPT_YES)) {
1428                 if (!ctx->interactive)
1429                         fatal_error(ctx,
1430                                     _("need terminal for interactive repairs"));
1431         }
1432         ctx->superblock = ctx->use_superblock;
1433
1434         flags = EXT2_FLAG_SKIP_MMP;
1435 restart:
1436 #ifdef CONFIG_TESTIO_DEBUG
1437         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1438                 io_ptr = test_io_manager;
1439                 test_io_backing_manager = unix_io_manager;
1440         } else
1441 #endif
1442                 io_ptr = unix_io_manager;
1443         flags |= EXT2_FLAG_NOFREE_ON_ERROR;
1444         profile_get_boolean(ctx->profile, "options", "old_bitmaps", 0, 0,
1445                             &old_bitmaps);
1446         if (!old_bitmaps)
1447                 flags |= EXT2_FLAG_64BITS;
1448         if ((ctx->options & E2F_OPT_READONLY) == 0) {
1449                 flags |= EXT2_FLAG_RW;
1450                 if (!(ctx->mount_flags & EXT2_MF_ISROOT &&
1451                       ctx->mount_flags & EXT2_MF_READONLY))
1452                         flags |= EXT2_FLAG_EXCLUSIVE;
1453                 if ((ctx->mount_flags & EXT2_MF_READONLY) &&
1454                     (ctx->options & E2F_OPT_FORCE))
1455                         flags &= ~EXT2_FLAG_EXCLUSIVE;
1456         }
1457
1458         if (ctx->undo_file) {
1459                 retval = e2fsck_setup_tdb(ctx, &io_ptr);
1460                 if (retval)
1461                         exit(FSCK_ERROR);
1462         }
1463
1464         ctx->openfs_flags = flags;
1465         retval = try_open_fs(ctx, flags, io_ptr, &fs);
1466
1467         if (!ctx->superblock && !(ctx->options & E2F_OPT_PREEN) &&
1468             !(ctx->flags & E2F_FLAG_SB_SPECIFIED) &&
1469             ((retval == EXT2_ET_BAD_MAGIC) ||
1470              (retval == EXT2_ET_SB_CSUM_INVALID) ||
1471              (retval == EXT2_ET_CORRUPT_SUPERBLOCK) ||
1472              ((retval == 0) && (retval2 = ext2fs_check_desc(fs))))) {
1473                 if (retval) {
1474                         pctx.errcode = retval;
1475                         fix_problem(ctx, PR_0_OPEN_FAILED, &pctx);
1476                 }
1477                 if (retval2) {
1478                         pctx.errcode = retval2;
1479                         fix_problem(ctx, PR_0_CHECK_DESC_FAILED, &pctx);
1480                 }
1481                 pctx.errcode = 0;
1482                 if (retval2 == ENOMEM || retval2 == EXT2_ET_NO_MEMORY) {
1483                         retval = retval2;
1484                         goto failure;
1485                 }
1486                 if (fs->flags & EXT2_FLAG_NOFREE_ON_ERROR) {
1487                         ext2fs_free(fs);
1488                         fs = NULL;
1489                 }
1490                 if (!fs || (fs->group_desc_count > 1)) {
1491                         log_out(ctx, _("%s: %s trying backup blocks...\n"),
1492                                 ctx->program_name,
1493                                 retval ? _("Superblock invalid,") :
1494                                 _("Group descriptors look bad..."));
1495                         orig_superblock = ctx->superblock;
1496                         get_backup_sb(ctx, fs, ctx->filesystem_name, io_ptr);
1497                         if (fs)
1498                                 ext2fs_close_free(&fs);
1499                         orig_retval = retval;
1500                         retval = try_open_fs(ctx, flags, io_ptr, &fs);
1501                         if ((orig_retval == 0) && retval != 0) {
1502                                 if (fs)
1503                                         ext2fs_close_free(&fs);
1504                                 log_out(ctx, _("%s: %s while using the "
1505                                                "backup blocks"),
1506                                         ctx->program_name,
1507                                         error_message(retval));
1508                                 log_out(ctx, _("%s: going back to original "
1509                                                "superblock\n"),
1510                                         ctx->program_name);
1511                                 ctx->superblock = orig_superblock;
1512                                 retval = try_open_fs(ctx, flags, io_ptr, &fs);
1513                         }
1514                 }
1515         }
1516         if (((retval == EXT2_ET_UNSUPP_FEATURE) ||
1517              (retval == EXT2_ET_RO_UNSUPP_FEATURE)) &&
1518             fs && fs->super) {
1519                 sb = fs->super;
1520                 features[0] = (sb->s_feature_compat &
1521                                ~EXT2_LIB_FEATURE_COMPAT_SUPP);
1522                 features[1] = (sb->s_feature_incompat &
1523                                ~EXT2_LIB_FEATURE_INCOMPAT_SUPP);
1524                 features[2] = (sb->s_feature_ro_compat &
1525                                ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
1526                 if (features[0] || features[1] || features[2])
1527                         goto print_unsupp_features;
1528         }
1529 failure:
1530         if (retval) {
1531                 if (orig_retval)
1532                         retval = orig_retval;
1533                 com_err(ctx->program_name, retval, _("while trying to open %s"),
1534                         ctx->filesystem_name);
1535                 if (retval == EXT2_ET_REV_TOO_HIGH) {
1536                         log_out(ctx, "%s",
1537                                 _("The filesystem revision is apparently "
1538                                   "too high for this version of e2fsck.\n"
1539                                   "(Or the filesystem superblock "
1540                                   "is corrupt)\n\n"));
1541                         fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
1542                 } else if (retval == EXT2_ET_SHORT_READ)
1543                         log_out(ctx, "%s",
1544                                 _("Could this be a zero-length partition?\n"));
1545                 else if ((retval == EPERM) || (retval == EACCES))
1546                         log_out(ctx, _("You must have %s access to the "
1547                                        "filesystem or be root\n"),
1548                                (ctx->options & E2F_OPT_READONLY) ?
1549                                "r/o" : "r/w");
1550                 else if (retval == ENXIO)
1551                         log_out(ctx, "%s",
1552                                 _("Possibly non-existent or swap device?\n"));
1553                 else if (retval == EBUSY)
1554                         log_out(ctx, "%s", _("Filesystem mounted or opened "
1555                                          "exclusively by another program?\n"));
1556                 else if (retval == ENOENT)
1557                         log_out(ctx, "%s",
1558                                 _("Possibly non-existent device?\n"));
1559 #ifdef EROFS
1560                 else if (retval == EROFS)
1561                         log_out(ctx, "%s", _("Disk write-protected; use the "
1562                                              "-n option to do a read-only\n"
1563                                              "check of the device.\n"));
1564 #endif
1565                 else {
1566                         fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
1567                         if (retval == EXT2_ET_BAD_MAGIC)
1568                                 check_plausibility(ctx->filesystem_name,
1569                                                    CHECK_FS_EXIST, NULL);
1570                 }
1571                 fatal_error(ctx, 0);
1572         }
1573         /*
1574          * We only update the master superblock because (a) paranoia;
1575          * we don't want to corrupt the backup superblocks, and (b) we
1576          * don't need to update the mount count and last checked
1577          * fields in the backup superblock (the kernel doesn't update
1578          * the backup superblocks anyway).  With newer versions of the
1579          * library this flag is set by ext2fs_open2(), but we set this
1580          * here just to be sure.  (No, we don't support e2fsck running
1581          * with some other libext2fs than the one that it was shipped
1582          * with, but just in case....)
1583          */
1584         fs->flags |= EXT2_FLAG_MASTER_SB_ONLY;
1585
1586         if (!(ctx->flags & E2F_FLAG_GOT_DEVSIZE)) {
1587                 __u32 blocksize = EXT2_BLOCK_SIZE(fs->super);
1588                 int need_restart = 0;
1589
1590                 pctx.errcode = ext2fs_get_device_size2(ctx->filesystem_name,
1591                                                        blocksize,
1592                                                        &ctx->num_blocks);
1593                 /*
1594                  * The floppy driver refuses to allow anyone else to
1595                  * open the device if has been opened with O_EXCL;
1596                  * this is unlike other block device drivers in Linux.
1597                  * To handle this, we close the filesystem and then
1598                  * reopen the filesystem after we get the device size.
1599                  */
1600                 if (pctx.errcode == EBUSY) {
1601                         ext2fs_close_free(&fs);
1602                         need_restart++;
1603                         pctx.errcode =
1604                                 ext2fs_get_device_size2(ctx->filesystem_name,
1605                                                         blocksize,
1606                                                         &ctx->num_blocks);
1607                 }
1608                 if (pctx.errcode == EXT2_ET_UNIMPLEMENTED)
1609                         ctx->num_blocks = 0;
1610                 else if (pctx.errcode) {
1611                         fix_problem(ctx, PR_0_GETSIZE_ERROR, &pctx);
1612                         ctx->flags |= E2F_FLAG_ABORT;
1613                         fatal_error(ctx, 0);
1614                 }
1615                 ctx->flags |= E2F_FLAG_GOT_DEVSIZE;
1616                 if (need_restart)
1617                         goto restart;
1618         }
1619
1620         ctx->fs = fs;
1621         fs->now = ctx->now;
1622         sb = fs->super;
1623
1624         if (sb->s_rev_level > E2FSCK_CURRENT_REV) {
1625                 com_err(ctx->program_name, EXT2_ET_REV_TOO_HIGH,
1626                         _("while trying to open %s"),
1627                         ctx->filesystem_name);
1628         get_newer:
1629                 fatal_error(ctx, _("Get a newer version of e2fsck!"));
1630         }
1631
1632         /*
1633          * Set the device name, which is used whenever we print error
1634          * or informational messages to the user.
1635          */
1636         if (ctx->device_name == 0 &&
1637             (sb->s_volume_name[0] != 0)) {
1638                 ctx->device_name = string_copy(ctx, sb->s_volume_name,
1639                                                sizeof(sb->s_volume_name));
1640         }
1641         if (ctx->device_name == 0)
1642                 ctx->device_name = string_copy(ctx, ctx->filesystem_name, 0);
1643         for (cp = ctx->device_name; *cp; cp++)
1644                 if (isspace(*cp) || *cp == ':')
1645                         *cp = '_';
1646
1647         ehandler_init(fs->io);
1648
1649         if (ext2fs_has_feature_mmp(fs->super) &&
1650             (flags & EXT2_FLAG_SKIP_MMP)) {
1651                 if (e2fsck_check_mmp(fs, ctx))
1652                         fatal_error(ctx, 0);
1653
1654                 /*
1655                  * Restart in order to reopen fs but this time start mmp.
1656                  */
1657                 ext2fs_close_free(&ctx->fs);
1658                 flags &= ~EXT2_FLAG_SKIP_MMP;
1659                 goto restart;
1660         }
1661
1662         if (ctx->logf)
1663                 fprintf(ctx->logf, "Filesystem UUID: %s\n",
1664                         e2p_uuid2str(sb->s_uuid));
1665
1666         /*
1667          * Make sure the ext3 superblock fields are consistent.
1668          */
1669         if ((ctx->mount_flags & (EXT2_MF_MOUNTED | EXT2_MF_BUSY)) == 0) {
1670                 retval = e2fsck_check_ext3_journal(ctx);
1671                 if (retval) {
1672                         com_err(ctx->program_name, retval,
1673                                 _("while checking journal for %s"),
1674                                 ctx->device_name);
1675                         fatal_error(ctx,
1676                                 _("Cannot proceed with file system check"));
1677                 }
1678         }
1679
1680         /*
1681          * Check to see if we need to do ext3-style recovery.  If so,
1682          * do it, and then restart the fsck.
1683          */
1684         if (ext2fs_has_feature_journal_needs_recovery(sb)) {
1685                 if (ctx->options & E2F_OPT_READONLY) {
1686                         log_out(ctx, "%s",
1687                                 _("Warning: skipping journal recovery because "
1688                                   "doing a read-only filesystem check.\n"));
1689                         io_channel_flush(ctx->fs->io);
1690                 } else {
1691                         if (ctx->flags & E2F_FLAG_RESTARTED) {
1692                                 /*
1693                                  * Whoops, we attempted to run the
1694                                  * journal twice.  This should never
1695                                  * happen, unless the hardware or
1696                                  * device driver is being bogus.
1697                                  */
1698                                 com_err(ctx->program_name, 0,
1699                                         _("unable to set superblock flags "
1700                                           "on %s\n"), ctx->device_name);
1701                                 fatal_error(ctx, 0);
1702                         }
1703                         retval = e2fsck_run_ext3_journal(ctx);
1704                         if (retval == EFSBADCRC) {
1705                                 log_out(ctx, _("Journal checksum error "
1706                                                "found in %s\n"),
1707                                         ctx->device_name);
1708                         } else if (retval == EFSCORRUPTED) {
1709                                 log_out(ctx, _("Journal corrupted in %s\n"),
1710                                         ctx->device_name);
1711                         } else if (retval) {
1712                                 com_err(ctx->program_name, retval,
1713                                 _("while recovering journal of %s"),
1714                                         ctx->device_name);
1715                         }
1716                         ext2fs_close_free(&ctx->fs);
1717                         ctx->flags |= E2F_FLAG_RESTARTED;
1718                         goto restart;
1719                 }
1720         }
1721
1722         /*
1723          * Check for compatibility with the feature sets.  We need to
1724          * be more stringent than ext2fs_open().
1725          */
1726         features[0] = sb->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP;
1727         features[1] = sb->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP;
1728         features[2] = (sb->s_feature_ro_compat &
1729                        ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
1730 print_unsupp_features:
1731         if (features[0] || features[1] || features[2]) {
1732                 int     i, j;
1733                 __u32   *mask = features, m;
1734
1735                 log_err(ctx, _("%s has unsupported feature(s):"),
1736                         ctx->filesystem_name);
1737
1738                 for (i=0; i <3; i++,mask++) {
1739                         for (j=0,m=1; j < 32; j++, m<<=1) {
1740                                 if (*mask & m)
1741                                         log_err(ctx, " %s",
1742                                                 e2p_feature2string(i, m));
1743                         }
1744                 }
1745                 log_err(ctx, "\n");
1746                 goto get_newer;
1747         }
1748
1749         /*
1750          * If the user specified a specific superblock, presumably the
1751          * master superblock has been trashed.  So we mark the
1752          * superblock as dirty, so it can be written out.
1753          */
1754         if (ctx->superblock &&
1755             !(ctx->options & E2F_OPT_READONLY))
1756                 ext2fs_mark_super_dirty(fs);
1757
1758         /*
1759          * Calculate the number of filesystem blocks per pagesize.  If
1760          * fs->blocksize > page_size, set the number of blocks per
1761          * pagesize to 1 to avoid division by zero errors.
1762          */
1763 #ifdef _SC_PAGESIZE
1764         sysval = sysconf(_SC_PAGESIZE);
1765         if (sysval > 0)
1766                 sys_page_size = sysval;
1767 #endif /* _SC_PAGESIZE */
1768         ctx->blocks_per_page = sys_page_size / fs->blocksize;
1769         if (ctx->blocks_per_page == 0)
1770                 ctx->blocks_per_page = 1;
1771
1772         if (ctx->superblock)
1773                 set_latch_flags(PR_LATCH_RELOC, PRL_LATCHED, 0);
1774         ext2fs_mark_valid(fs);
1775         check_super_block(ctx);
1776         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1777                 fatal_error(ctx, 0);
1778         check_if_skip(ctx);
1779         check_resize_inode(ctx);
1780         if (bad_blocks_file)
1781                 read_bad_blocks_file(ctx, bad_blocks_file, replace_bad_blocks);
1782         else if (cflag)
1783                 read_bad_blocks_file(ctx, 0, !keep_bad_blocks); /* Test disk */
1784         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1785                 fatal_error(ctx, 0);
1786
1787         /*
1788          * Mark the system as valid, 'til proven otherwise
1789          */
1790         ext2fs_mark_valid(fs);
1791
1792         retval = ext2fs_read_bb_inode(fs, &fs->badblocks);
1793         if (retval) {
1794                 log_out(ctx, _("%s: %s while reading bad blocks inode\n"),
1795                         ctx->program_name, error_message(retval));
1796                 preenhalt(ctx);
1797                 log_out(ctx, "%s", _("This doesn't bode well, "
1798                                      "but we'll try to go on...\n"));
1799         }
1800
1801         /*
1802          * Save the journal size in megabytes.
1803          * Try and use the journal size from the backup else let e2fsck
1804          * find the default journal size.
1805          */
1806         if (sb->s_jnl_backup_type == EXT3_JNL_BACKUP_BLOCKS)
1807                 journal_size = (sb->s_jnl_blocks[15] << (32 - 20)) |
1808                                (sb->s_jnl_blocks[16] >> 20);
1809         else
1810                 journal_size = -1;
1811
1812         if (ext2fs_has_feature_quota(sb)) {
1813                 /* Quotas were enabled. Do quota accounting during fsck. */
1814                 clear_problem_context(&pctx);
1815                 pctx.errcode = quota_init_context(&ctx->qctx, ctx->fs, 0);
1816                 if (pctx.errcode) {
1817                         fix_problem(ctx, PR_0_QUOTA_INIT_CTX, &pctx);
1818                         fatal_error(ctx, 0);
1819                 }
1820         }
1821
1822         run_result = e2fsck_run(ctx);
1823         e2fsck_clear_progbar(ctx);
1824
1825         if (!ctx->invalid_bitmaps &&
1826             (ctx->flags & E2F_FLAG_JOURNAL_INODE)) {
1827                 if (fix_problem(ctx, PR_6_RECREATE_JOURNAL, &pctx)) {
1828                         if (journal_size < 1024)
1829                                 journal_size = ext2fs_default_journal_size(ext2fs_blocks_count(fs->super));
1830                         if (journal_size < 0) {
1831                                 ext2fs_clear_feature_journal(fs->super);
1832                                 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1833                                 log_out(ctx, "%s: Couldn't determine "
1834                                         "journal size\n", ctx->program_name);
1835                                 goto no_journal;
1836                         }
1837                         log_out(ctx, _("Creating journal (%d blocks): "),
1838                                journal_size);
1839                         fflush(stdout);
1840                         retval = ext2fs_add_journal_inode(fs,
1841                                                           journal_size, 0);
1842                         if (retval) {
1843                                 log_out(ctx, "%s: while trying to create "
1844                                         "journal\n", error_message(retval));
1845                                 goto no_journal;
1846                         }
1847                         log_out(ctx, "%s", _(" Done.\n"));
1848                         log_out(ctx, "%s",
1849                                 _("\n*** journal has been regenerated ***\n"));
1850                 }
1851         }
1852 no_journal:
1853
1854         if (run_result & E2F_FLAG_ABORT) {
1855                 fatal_error(ctx, _("aborted"));
1856         } else if (run_result & E2F_FLAG_CANCEL) {
1857                 log_out(ctx, _("%s: e2fsck canceled.\n"), ctx->device_name ?
1858                         ctx->device_name : ctx->filesystem_name);
1859                 exit_value |= FSCK_CANCELED;
1860         } else if (ctx->qctx && !ctx->invalid_bitmaps) {
1861                 int needs_writeout;
1862
1863                 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1864                         if (*quota_sb_inump(sb, qtype) == 0)
1865                                 continue;
1866                         needs_writeout = 0;
1867                         pctx.num = qtype;
1868                         retval = quota_compare_and_update(ctx->qctx, qtype,
1869                                                           &needs_writeout);
1870                         if ((retval || needs_writeout) &&
1871                             fix_problem(ctx, PR_6_UPDATE_QUOTAS, &pctx)) {
1872                                 pctx.errcode = quota_write_inode(ctx->qctx,
1873                                                                  1 << qtype);
1874                                 if (pctx.errcode)
1875                                         (void) fix_problem(ctx,
1876                                                 PR_6_WRITE_QUOTAS, &pctx);
1877                         }
1878                 }
1879                 quota_release_context(&ctx->qctx);
1880         }
1881
1882         if (run_result == E2F_FLAG_RESTART) {
1883                 log_out(ctx, "%s",
1884                         _("Restarting e2fsck from the beginning...\n"));
1885                 retval = e2fsck_reset_context(ctx);
1886                 if (retval) {
1887                         com_err(ctx->program_name, retval, "%s",
1888                                 _("while resetting context"));
1889                         fatal_error(ctx, 0);
1890                 }
1891                 ext2fs_close_free(&ctx->fs);
1892                 goto restart;
1893         }
1894
1895 #ifdef MTRACE
1896         mtrace_print("Cleanup");
1897 #endif
1898         was_changed = ext2fs_test_changed(fs);
1899         if (!(ctx->flags & E2F_FLAG_RUN_RETURN) &&
1900             !(ctx->options & E2F_OPT_READONLY)) {
1901                 if (ext2fs_test_valid(fs)) {
1902                         if (!(sb->s_state & EXT2_VALID_FS))
1903                                 exit_value |= FSCK_NONDESTRUCT;
1904                         sb->s_state = EXT2_VALID_FS;
1905                         if (check_backup_super_block(ctx))
1906                                 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1907                 } else
1908                         sb->s_state &= ~EXT2_VALID_FS;
1909                 if (!(ctx->flags & E2F_FLAG_TIME_INSANE))
1910                         sb->s_lastcheck = ctx->now;
1911                 sb->s_mnt_count = 0;
1912                 memset(((char *) sb) + EXT4_S_ERR_START, 0, EXT4_S_ERR_LEN);
1913                 pctx.errcode = ext2fs_set_gdt_csum(ctx->fs);
1914                 if (pctx.errcode)
1915                         fix_problem(ctx, PR_6_SET_BG_CHECKSUM, &pctx);
1916                 ext2fs_mark_super_dirty(fs);
1917         }
1918
1919         if (!(ctx->options & E2F_OPT_READONLY)) {
1920                 e2fsck_write_bitmaps(ctx);
1921                 if (fs->flags & EXT2_FLAG_DIRTY) {
1922                         pctx.errcode = ext2fs_flush(ctx->fs);
1923                         if (pctx.errcode)
1924                                 fix_problem(ctx, PR_6_FLUSH_FILESYSTEM, &pctx);
1925                 }
1926                 pctx.errcode = io_channel_flush(ctx->fs->io);
1927                 if (pctx.errcode)
1928                         fix_problem(ctx, PR_6_IO_FLUSH, &pctx);
1929         }
1930
1931         if (was_changed) {
1932                 int fs_fixed = (ctx->flags & E2F_FLAG_PROBLEMS_FIXED);
1933
1934                 if (fs_fixed)
1935                         exit_value |= FSCK_NONDESTRUCT;
1936                 if (!(ctx->options & E2F_OPT_PREEN)) {
1937 #if 0   /* Do this later; it breaks too many tests' golden outputs */
1938                         log_out(ctx, fs_fixed ?
1939                                 _("\n%s: ***** FILE SYSTEM ERRORS "
1940                                   "CORRECTED *****\n") :
1941                                 _("%s: File system was modified.\n"),
1942                                 ctx->device_name);
1943 #else
1944                         log_out(ctx,
1945                                 _("\n%s: ***** FILE SYSTEM WAS MODIFIED *****\n"),
1946                                 ctx->device_name);
1947 #endif
1948                 }
1949                 if (ctx->mount_flags & EXT2_MF_ISROOT) {
1950                         log_out(ctx, _("%s: ***** REBOOT SYSTEM *****\n"),
1951                                 ctx->device_name);
1952                         exit_value |= FSCK_REBOOT;
1953                 }
1954         }
1955         if (!ext2fs_test_valid(fs) ||
1956             ((exit_value & FSCK_CANCELED) &&
1957              (sb->s_state & EXT2_ERROR_FS))) {
1958                 log_out(ctx, _("\n%s: ********** WARNING: Filesystem still has "
1959                                "errors **********\n\n"), ctx->device_name);
1960                 exit_value |= FSCK_UNCORRECTED;
1961                 exit_value &= ~FSCK_NONDESTRUCT;
1962         }
1963         if (exit_value & FSCK_CANCELED) {
1964                 int     allow_cancellation;
1965
1966                 profile_get_boolean(ctx->profile, "options",
1967                                     "allow_cancellation", 0, 0,
1968                                     &allow_cancellation);
1969                 exit_value &= ~FSCK_NONDESTRUCT;
1970                 if (allow_cancellation && ext2fs_test_valid(fs) &&
1971                     (sb->s_state & EXT2_VALID_FS) &&
1972                     !(sb->s_state & EXT2_ERROR_FS))
1973                         exit_value = 0;
1974         } else
1975                 show_stats(ctx);
1976
1977         print_resource_track(ctx, NULL, &ctx->global_rtrack, ctx->fs->io);
1978
1979         ext2fs_close_free(&ctx->fs);
1980         free(ctx->journal_name);
1981
1982         if (ctx->logf)
1983                 fprintf(ctx->logf, "Exit status: %d\n", exit_value);
1984         e2fsck_free_context(ctx);
1985         remove_error_table(&et_ext2_error_table);
1986         remove_error_table(&et_prof_error_table);
1987         return exit_value;
1988 }