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 = 0, frag_percent_dir = 0, frag_percent_total = 0;
 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         if (inodes_used > 0) {
 123                 frag_percent_file = (10000 * ctx->fs_fragmented) / inodes_used;
 124                 frag_percent_file = (frag_percent_file + 5) / 10;
 125
 126                 frag_percent_dir = (10000 * ctx->fs_fragmented_dir) / inodes_used;
 127                 frag_percent_dir = (frag_percent_dir + 5) / 10;
 128
 129                 frag_percent_total = ((10000 * (ctx->fs_fragmented +
 130                                                 ctx->fs_fragmented_dir))
 131                                       / inodes_used);
 132                 frag_percent_total = (frag_percent_total + 5) / 10;
 133         }
 134
 135         if (!verbose) {
 136                 log_out(ctx, _("%s: %u/%u files (%0d.%d%% non-contiguous), "
 137                                "%llu/%llu blocks\n"),
 138                         ctx->device_name, inodes_used, inodes,
 139                         frag_percent_total / 10, frag_percent_total % 10,
 140                         blocks_used, blocks);
 141                 return;
 142         }
 143         profile_get_boolean(ctx->profile, "options", "report_features", 0, 0,
 144                             &i);
 145         if (verbose && i) {
 146                 log_out(ctx, "\nFilesystem features:");
 147                 mask = &ctx->fs->super->s_feature_compat;
 148                 for (i = 0; i < 3; i++, mask++) {
 149                         for (j = 0, m = 1; j < 32; j++, m <<= 1) {
 150                                 if (*mask & m) {
 151                                         log_out(ctx, " %s",
 152                                                 e2p_feature2string(i, m));
 153                                         printed++;
 154                                 }
 155                         }
 156                 }
 157                 if (printed == 0)
 158                         log_out(ctx, " (none)");
 159                 log_out(ctx, "\n");
 160         }
 161
 162         log_out(ctx, P_("\n%12u inode used (%2.2f%%, out of %u)\n",
 163                         "\n%12u inodes used (%2.2f%%, out of %u)\n",
 164                         inodes_used), inodes_used,
 165                 100.0 * inodes_used / inodes, inodes);
 166         log_out(ctx, P_("%12u non-contiguous file (%0d.%d%%)\n",
 167                         "%12u non-contiguous files (%0d.%d%%)\n",
 168                         ctx->fs_fragmented),
 169                 ctx->fs_fragmented, frag_percent_file / 10,
 170                 frag_percent_file % 10);
 171         log_out(ctx, P_("%12u non-contiguous directory (%0d.%d%%)\n",
 172                         "%12u non-contiguous directories (%0d.%d%%)\n",
 173                         ctx->fs_fragmented_dir),
 174                 ctx->fs_fragmented_dir, frag_percent_dir / 10,
 175                 frag_percent_dir % 10);
 176         log_out(ctx, _("             # of inodes with ind/dind/tind blocks: "
 177                        "%u/%u/%u\n"),
 178                 ctx->fs_ind_count, ctx->fs_dind_count, ctx->fs_tind_count);
 179
 180         for (j=MAX_EXTENT_DEPTH_COUNT-1; j >=0; j--)
 181                 if (ctx->extent_depth_count[j])
 182                         break;
 183         if (++j) {
 184                 log_out(ctx, "%s", _("             Extent depth histogram: "));
 185                 for (i=0; i < j; i++) {
 186                         if (i)
 187                                 fputc('/', stdout);
 188                         log_out(ctx, "%u", ctx->extent_depth_count[i]);
 189                 }
 190                 log_out(ctx, "\n");
 191         }
 192
 193         log_out(ctx, P_("%12llu block used (%2.2f%%, out of %llu)\n",
 194                         "%12llu blocks used (%2.2f%%, out of %llu)\n",
 195                    blocks_used),
 196                 blocks_used, 100.0 * blocks_used / blocks, blocks);
 197         log_out(ctx, P_("%12u bad block\n", "%12u bad blocks\n",
 198                         ctx->fs_badblocks_count), ctx->fs_badblocks_count);
 199         log_out(ctx, P_("%12u large file\n", "%12u large files\n",
 200                         ctx->large_files), ctx->large_files);
 201         log_out(ctx, P_("\n%12u regular file\n", "\n%12u regular files\n",
 202                         ctx->fs_regular_count), ctx->fs_regular_count);
 203         log_out(ctx, P_("%12u directory\n", "%12u directories\n",
 204                         ctx->fs_directory_count), ctx->fs_directory_count);
 205         log_out(ctx, P_("%12u character device file\n",
 206                         "%12u character device files\n", ctx->fs_chardev_count),
 207                 ctx->fs_chardev_count);
 208         log_out(ctx, P_("%12u block device file\n", "%12u block device files\n",
 209                         ctx->fs_blockdev_count), ctx->fs_blockdev_count);
 210         log_out(ctx, P_("%12u fifo\n", "%12u fifos\n", ctx->fs_fifo_count),
 211                 ctx->fs_fifo_count);
 212         log_out(ctx, P_("%12u link\n", "%12u links\n", num_links),
 213                 ctx->fs_links_count - dir_links);
 214         log_out(ctx, P_("%12u symbolic link", "%12u symbolic links",
 215                         ctx->fs_symlinks_count), ctx->fs_symlinks_count);
 216         log_out(ctx, P_(" (%u fast symbolic link)\n",
 217                         " (%u fast symbolic links)\n",
 218                         ctx->fs_fast_symlinks_count),
 219                 ctx->fs_fast_symlinks_count);
 220         log_out(ctx, P_("%12u socket\n", "%12u sockets\n",
 221                         ctx->fs_sockets_count),
 222                 ctx->fs_sockets_count);
 223         log_out(ctx, "------------\n");
 224         log_out(ctx, P_("%12u file\n", "%12u files\n", num_files),
 225                 num_files);
 226 }
 227
 228 static void check_mount(e2fsck_t ctx)
 229 {
 230         errcode_t       retval;
 231         int             cont;
 232
 233         retval = ext2fs_check_if_mounted(ctx->filesystem_name,
 234                                          &ctx->mount_flags);
 235         if (retval) {
 236                 com_err("ext2fs_check_if_mount", retval,
 237                         _("while determining whether %s is mounted."),
 238                         ctx->filesystem_name);
 239                 return;
 240         }
 241
 242         /*
 243          * If the filesystem isn't mounted, or it's the root
 244          * filesystem and it's mounted read-only, and we're not doing
 245          * a read/write check, then everything's fine.
 246          */
 247         if ((!(ctx->mount_flags & (EXT2_MF_MOUNTED | EXT2_MF_BUSY))) ||
 248             ((ctx->mount_flags & EXT2_MF_ISROOT) &&
 249              (ctx->mount_flags & EXT2_MF_READONLY) &&
 250              !(ctx->options & E2F_OPT_WRITECHECK)))
 251                 return;
 252
 253         if (((ctx->options & E2F_OPT_READONLY) ||
 254              ((ctx->options & E2F_OPT_FORCE) &&
 255               (ctx->mount_flags & EXT2_MF_READONLY))) &&
 256             !(ctx->options & E2F_OPT_WRITECHECK)) {
 257                 if (ctx->mount_flags & EXT2_MF_MOUNTED)
 258                         log_out(ctx, _("Warning!  %s is mounted.\n"),
 259                                         ctx->filesystem_name);
 260                 else
 261                         log_out(ctx, _("Warning!  %s is in use.\n"),
 262                                         ctx->filesystem_name);
 263                 return;
 264         }
 265
 266         if (ctx->mount_flags & EXT2_MF_MOUNTED)
 267                 log_out(ctx, _("%s is mounted.\n"), ctx->filesystem_name);
 268         else
 269                 log_out(ctx, _("%s is in use.\n"), ctx->filesystem_name);
 270         if (!ctx->interactive || ctx->mount_flags & EXT2_MF_BUSY)
 271                 fatal_error(ctx, _("Cannot continue, aborting.\n\n"));
 272         puts("\007\007\007\007");
 273         log_out(ctx, "%s", _("\n\nWARNING!!!  "
 274                        "The filesystem is mounted.   "
 275                        "If you continue you ***WILL***\n"
 276                        "cause ***SEVERE*** filesystem damage.\n\n"));
 277         puts("\007\007\007");
 278         cont = ask_yn(ctx, _("Do you really want to continue"), 0);
 279         if (!cont) {
 280                 printf("%s", _("check aborted.\n"));
 281                 exit (0);
 282         }
 283         return;
 284 }
 285
 286 static int is_on_batt(void)
 287 {
 288         FILE    *f;
 289         DIR     *d;
 290         char    tmp[80], tmp2[80], fname[NAME_MAX+30];
 291         unsigned int    acflag;
 292         struct dirent*  de;
 293
 294         f = fopen("/sys/class/power_supply/AC/online", "r");
 295         if (f) {
 296                 if (fscanf(f, "%u\n", &acflag) == 1) {
 297                         fclose(f);
 298                         return (!acflag);
 299                 }
 300                 fclose(f);
 301         }
 302         f = fopen("/proc/apm", "r");
 303         if (f) {
 304                 if (fscanf(f, "%s %s %s %x", tmp, tmp, tmp, &acflag) != 4)
 305                         acflag = 1;
 306                 fclose(f);
 307                 return (acflag != 1);
 308         }
 309         d = opendir("/proc/acpi/ac_adapter");
 310         if (d) {
 311                 while ((de=readdir(d)) != NULL) {
 312                         if (!strncmp(".", de->d_name, 1))
 313                                 continue;
 314                         snprintf(fname, sizeof(fname),
 315                                  "/proc/acpi/ac_adapter/%s/state",
 316                                  de->d_name);
 317                         f = fopen(fname, "r");
 318                         if (!f)
 319                                 continue;
 320                         if (fscanf(f, "%s %s", tmp2, tmp) != 2)
 321                                 tmp[0] = 0;
 322                         fclose(f);
 323                         if (strncmp(tmp, "off-line", 8) == 0) {
 324                                 closedir(d);
 325                                 return 1;
 326                         }
 327                 }
 328                 closedir(d);
 329         }
 330         return 0;
 331 }
 332
 333 /*
 334  * This routine checks to see if a filesystem can be skipped; if so,
 335  * it will exit with E2FSCK_OK.  Under some conditions it will print a
 336  * message explaining why a check is being forced.
 337  */
 338 static void check_if_skip(e2fsck_t ctx)
 339 {
 340         ext2_filsys fs = ctx->fs;
 341         struct problem_context pctx;
 342         const char *reason = NULL;
 343         unsigned int reason_arg = 0;
 344         long next_check;
 345         int batt = is_on_batt();
 346         int defer_check_on_battery;
 347         int broken_system_clock;
 348         time_t lastcheck;
 349
 350         if (ctx->flags & E2F_FLAG_PROBLEMS_FIXED)
 351                 return;
 352
 353         profile_get_boolean(ctx->profile, "options", "broken_system_clock",
 354                             0, 0, &broken_system_clock);
 355         if (ctx->flags & E2F_FLAG_TIME_INSANE)
 356                 broken_system_clock = 1;
 357         profile_get_boolean(ctx->profile, "options",
 358                             "defer_check_on_battery", 0, 1,
 359                             &defer_check_on_battery);
 360         if (!defer_check_on_battery)
 361                 batt = 0;
 362
 363         if ((ctx->options & E2F_OPT_FORCE) || bad_blocks_file || cflag)
 364                 return;
 365
 366         if (ctx->options & E2F_OPT_JOURNAL_ONLY)
 367                 goto skip;
 368
 369         lastcheck = fs->super->s_lastcheck;
 370         if (lastcheck > ctx->now)
 371                 lastcheck -= ctx->time_fudge;
 372         if ((fs->super->s_state & EXT2_ERROR_FS) ||
 373             !ext2fs_test_valid(fs))
 374                 reason = _(" contains a file system with errors");
 375         else if ((fs->super->s_state & EXT2_VALID_FS) == 0)
 376                 reason = _(" was not cleanly unmounted");
 377         else if (check_backup_super_block(ctx))
 378                 reason = _(" primary superblock features different from backup");
 379         else if ((fs->super->s_max_mnt_count > 0) &&
 380                  (fs->super->s_mnt_count >=
 381                   (unsigned) fs->super->s_max_mnt_count)) {
 382                 reason = _(" has been mounted %u times without being checked");
 383                 reason_arg = fs->super->s_mnt_count;
 384                 if (batt && (fs->super->s_mnt_count <
 385                              (unsigned) fs->super->s_max_mnt_count*2))
 386                         reason = 0;
 387         } else if (!broken_system_clock && fs->super->s_checkinterval &&
 388                    (ctx->now < lastcheck)) {
 389                 reason = _(" has filesystem last checked time in the future");
 390                 if (batt)
 391                         reason = 0;
 392         } else if (!broken_system_clock && fs->super->s_checkinterval &&
 393                    ((ctx->now - lastcheck) >=
 394                     ((time_t) fs->super->s_checkinterval))) {
 395                 reason = _(" has gone %u days without being checked");
 396                 reason_arg = (ctx->now - fs->super->s_lastcheck)/(3600*24);
 397                 if (batt && ((ctx->now - fs->super->s_lastcheck) <
 398                              fs->super->s_checkinterval*2))
 399                         reason = 0;
 400         } else if (broken_system_clock && fs->super->s_checkinterval) {
 401                 log_out(ctx, "%s: ", ctx->device_name);
 402                 log_out(ctx, "%s",
 403                         _("ignoring check interval, broken_system_clock set\n"));
 404         }
 405
 406         if (reason) {
 407                 log_out(ctx, "%s", ctx->device_name);
 408                 log_out(ctx, reason, reason_arg);
 409                 log_out(ctx, "%s", _(", check forced.\n"));
 410                 return;
 411         }
 412
 413         /*
 414          * Update the global counts from the block group counts.  This
 415          * is needed since modern kernels don't update the global
 416          * counts so as to avoid locking the entire file system.  So
 417          * if the filesystem is not unmounted cleanly, the global
 418          * counts may not be accurate.  Update them here if we can,
 419          * for the benefit of users who might examine the file system
 420          * using dumpe2fs.  (This is for cosmetic reasons only.)
 421          */
 422         clear_problem_context(&pctx);
 423         pctx.ino = fs->super->s_free_inodes_count;
 424         pctx.ino2 = ctx->free_inodes;
 425         if ((pctx.ino != pctx.ino2) &&
 426             !(ctx->options & E2F_OPT_READONLY) &&
 427             fix_problem(ctx, PR_0_FREE_INODE_COUNT, &pctx)) {
 428                 fs->super->s_free_inodes_count = ctx->free_inodes;
 429                 ext2fs_mark_super_dirty(fs);
 430         }
 431         clear_problem_context(&pctx);
 432         pctx.blk = ext2fs_free_blocks_count(fs->super);
 433         pctx.blk2 = ctx->free_blocks;
 434         if ((pctx.blk != pctx.blk2) &&
 435             !(ctx->options & E2F_OPT_READONLY) &&
 436             fix_problem(ctx, PR_0_FREE_BLOCK_COUNT, &pctx)) {
 437                 ext2fs_free_blocks_count_set(fs->super, ctx->free_blocks);
 438                 ext2fs_mark_super_dirty(fs);
 439         }
 440
 441         /* Print the summary message when we're skipping a full check */
 442         log_out(ctx, _("%s: clean, %u/%u files, %llu/%llu blocks"),
 443                 ctx->device_name,
 444                 fs->super->s_inodes_count - fs->super->s_free_inodes_count,
 445                 fs->super->s_inodes_count,
 446                 ext2fs_blocks_count(fs->super) -
 447                 ext2fs_free_blocks_count(fs->super),
 448                 ext2fs_blocks_count(fs->super));
 449         next_check = 100000;
 450         if (fs->super->s_max_mnt_count > 0) {
 451                 next_check = fs->super->s_max_mnt_count - fs->super->s_mnt_count;
 452                 if (next_check <= 0)
 453                         next_check = 1;
 454         }
 455         if (!broken_system_clock && fs->super->s_checkinterval &&
 456             ((ctx->now - fs->super->s_lastcheck) >= fs->super->s_checkinterval))
 457                 next_check = 1;
 458         if (next_check <= 5) {
 459                 if (next_check == 1) {
 460                         if (batt)
 461                                 log_out(ctx, "%s",
 462                                         _(" (check deferred; on battery)"));
 463                         else
 464                                 log_out(ctx, "%s",
 465                                         _(" (check after next mount)"));
 466                 } else
 467                         log_out(ctx, _(" (check in %ld mounts)"),
 468                                 next_check);
 469         }
 470         log_out(ctx, "\n");
 471 skip:
 472         ext2fs_close_free(&ctx->fs);
 473         e2fsck_free_context(ctx);
 474         exit(FSCK_OK);
 475 }
 476
 477 /*
 478  * For completion notice
 479  */
 480 struct percent_tbl {
 481         int     max_pass;
 482         int     table[32];
 483 };
 484 static struct percent_tbl e2fsck_tbl = {
 485         5, { 0, 70, 90, 92,  95, 100 }
 486 };
 487 static char bar[128], spaces[128];
 488
 489 static float calc_percent(struct percent_tbl *tbl, int pass, int curr,
 490                           int max)
 491 {
 492         float   percent;
 493
 494         if (pass <= 0)
 495                 return 0.0;
 496         if (pass > tbl->max_pass || max == 0)
 497                 return 100.0;
 498         percent = ((float) curr) / ((float) max);
 499         return ((percent * (tbl->table[pass] - tbl->table[pass-1]))
 500                 + tbl->table[pass-1]);
 501 }
 502
 503 void e2fsck_clear_progbar(e2fsck_t ctx)
 504 {
 505         if (!(ctx->flags & E2F_FLAG_PROG_BAR))
 506                 return;
 507
 508         printf("%s%s\r%s", ctx->start_meta, spaces + (sizeof(spaces) - 80),
 509                ctx->stop_meta);
 510         fflush(stdout);
 511         ctx->flags &= ~E2F_FLAG_PROG_BAR;
 512 }
 513
 514 int e2fsck_simple_progress(e2fsck_t ctx, const char *label, float percent,
 515                            unsigned int dpynum)
 516 {
 517         static const char spinner[] = "\\|/-";
 518         int     i;
 519         unsigned int    tick;
 520         struct timeval  tv;
 521         int dpywidth;
 522         int fixed_percent;
 523
 524         if (ctx->flags & E2F_FLAG_PROG_SUPPRESS)
 525                 return 0;
 526
 527         /*
 528          * Calculate the new progress position.  If the
 529          * percentage hasn't changed, then we skip out right
 530          * away.
 531          */
 532         fixed_percent = (int) ((10 * percent) + 0.5);
 533         if (ctx->progress_last_percent == fixed_percent)
 534                 return 0;
 535         ctx->progress_last_percent = fixed_percent;
 536
 537         /*
 538          * If we've already updated the spinner once within
 539          * the last 1/8th of a second, no point doing it
 540          * again.
 541          */
 542         gettimeofday(&tv, NULL);
 543         tick = (tv.tv_sec << 3) + (tv.tv_usec / (1000000 / 8));
 544         if ((tick == ctx->progress_last_time) &&
 545             (fixed_percent != 0) && (fixed_percent != 1000))
 546                 return 0;
 547         ctx->progress_last_time = tick;
 548
 549         /*
 550          * Advance the spinner, and note that the progress bar
 551          * will be on the screen
 552          */
 553         ctx->progress_pos = (ctx->progress_pos+1) & 3;
 554         ctx->flags |= E2F_FLAG_PROG_BAR;
 555
 556         dpywidth = 66 - strlen(label);
 557         dpywidth = 8 * (dpywidth / 8);
 558         if (dpynum)
 559                 dpywidth -= 8;
 560
 561         i = ((percent * dpywidth) + 50) / 100;
 562         printf("%s%s: |%s%s", ctx->start_meta, label,
 563                bar + (sizeof(bar) - (i+1)),
 564                spaces + (sizeof(spaces) - (dpywidth - i + 1)));
 565         if (fixed_percent == 1000)
 566                 fputc('|', stdout);
 567         else
 568                 fputc(spinner[ctx->progress_pos & 3], stdout);
 569         printf(" %4.1f%%  ", percent);
 570         if (dpynum)
 571                 printf("%u\r", dpynum);
 572         else
 573                 fputs(" \r", stdout);
 574         fputs(ctx->stop_meta, stdout);
 575
 576         if (fixed_percent == 1000)
 577                 e2fsck_clear_progbar(ctx);
 578         fflush(stdout);
 579
 580         return 0;
 581 }
 582
 583 static int e2fsck_update_progress(e2fsck_t ctx, int pass,
 584                                   unsigned long cur, unsigned long max)
 585 {
 586         char buf[1024];
 587         float percent;
 588
 589         if (pass == 0)
 590                 return 0;
 591
 592         if (ctx->progress_fd) {
 593                 snprintf(buf, sizeof(buf), "%d %lu %lu %s\n",
 594                          pass, cur, max, ctx->device_name);
 595                 write_all(ctx->progress_fd, buf, strlen(buf));
 596         } else {
 597                 percent = calc_percent(&e2fsck_tbl, pass, cur, max);
 598                 e2fsck_simple_progress(ctx, ctx->device_name,
 599                                        percent, 0);
 600         }
 601         return 0;
 602 }
 603
 604 #define PATH_SET "PATH=/sbin"
 605
 606 /*
 607  * Make sure 0,1,2 file descriptors are open, so that we don't open
 608  * the filesystem using the same file descriptor as stdout or stderr.
 609  */
 610 static void reserve_stdio_fds(void)
 611 {
 612         int     fd = 0;
 613
 614         while (fd <= 2) {
 615                 fd = open("/dev/null", O_RDWR);
 616                 if (fd < 0) {
 617                         fprintf(stderr, _("ERROR: Couldn't open "
 618                                 "/dev/null (%s)\n"),
 619                                 strerror(errno));
 620                         return;
 621                 }
 622         }
 623         (void) close(fd);
 624 }
 625
 626 #ifdef HAVE_SIGNAL_H
 627 static void signal_progress_on(int sig EXT2FS_ATTR((unused)))
 628 {
 629         e2fsck_t ctx = e2fsck_global_ctx;
 630
 631         if (!ctx)
 632                 return;
 633
 634         ctx->progress = e2fsck_update_progress;
 635 }
 636
 637 static void signal_progress_off(int sig EXT2FS_ATTR((unused)))
 638 {
 639         e2fsck_t ctx = e2fsck_global_ctx;
 640
 641         if (!ctx)
 642                 return;
 643
 644         e2fsck_clear_progbar(ctx);
 645         ctx->progress = 0;
 646 }
 647
 648 static void signal_cancel(int sig EXT2FS_ATTR((unused)))
 649 {
 650         e2fsck_t ctx = e2fsck_global_ctx;
 651
 652         if (!ctx)
 653                 exit(FSCK_CANCELED);
 654
 655         ctx->flags |= E2F_FLAG_CANCEL;
 656 }
 657 #endif
 658
 659 static void parse_extended_opts(e2fsck_t ctx, const char *opts)
 660 {
 661         char    *buf, *token, *next, *p, *arg;
 662         int     ea_ver;
 663         int     extended_usage = 0;
 664         unsigned long long reada_kb;
 665
 666         buf = string_copy(ctx, opts, 0);
 667         for (token = buf; token && *token; token = next) {
 668                 p = strchr(token, ',');
 669                 next = 0;
 670                 if (p) {
 671                         *p = 0;
 672                         next = p+1;
 673                 }
 674                 arg = strchr(token, '=');
 675                 if (arg) {
 676                         *arg = 0;
 677                         arg++;
 678                 }
 679                 if (strcmp(token, "ea_ver") == 0) {
 680                         if (!arg) {
 681                                 extended_usage++;
 682                                 continue;
 683                         }
 684                         ea_ver = strtoul(arg, &p, 0);
 685                         if (*p ||
 686                             ((ea_ver != 1) && (ea_ver != 2))) {
 687                                 fprintf(stderr, "%s",
 688                                         _("Invalid EA version.\n"));
 689                                 extended_usage++;
 690                                 continue;
 691                         }
 692                         ctx->ext_attr_ver = ea_ver;
 693                 } else if (strcmp(token, "readahead_kb") == 0) {
 694                         if (!arg) {
 695                                 extended_usage++;
 696                                 continue;
 697                         }
 698                         reada_kb = strtoull(arg, &p, 0);
 699                         if (*p) {
 700                                 fprintf(stderr, "%s",
 701                                         _("Invalid readahead buffer size.\n"));
 702                                 extended_usage++;
 703                                 continue;
 704                         }
 705                         ctx->readahead_kb = reada_kb;
 706                 } else if (strcmp(token, "fragcheck") == 0) {
 707                         ctx->options |= E2F_OPT_FRAGCHECK;
 708                         continue;
 709                 } else if (strcmp(token, "journal_only") == 0) {
 710                         if (arg) {
 711                                 extended_usage++;
 712                                 continue;
 713                         }
 714                         ctx->options |= E2F_OPT_JOURNAL_ONLY;
 715                 } else if (strcmp(token, "discard") == 0) {
 716                         ctx->options |= E2F_OPT_DISCARD;
 717                         continue;
 718                 } else if (strcmp(token, "nodiscard") == 0) {
 719                         ctx->options &= ~E2F_OPT_DISCARD;
 720                         continue;
 721                 } else if (strcmp(token, "optimize_extents") == 0) {
 722                         ctx->options &= ~E2F_OPT_NOOPT_EXTENTS;
 723                         continue;
 724                 } else if (strcmp(token, "no_optimize_extents") == 0) {
 725                         ctx->options |= E2F_OPT_NOOPT_EXTENTS;
 726                         continue;
 727                 } else if (strcmp(token, "inode_count_fullmap") == 0) {
 728                         ctx->options |= E2F_OPT_ICOUNT_FULLMAP;
 729                         continue;
 730                 } else if (strcmp(token, "no_inode_count_fullmap") == 0) {
 731                         ctx->options &= ~E2F_OPT_ICOUNT_FULLMAP;
 732                         continue;
 733                 } else if (strcmp(token, "log_filename") == 0) {
 734                         if (!arg)
 735                                 extended_usage++;
 736                         else
 737                                 ctx->log_fn = string_copy(ctx, arg, 0);
 738                         continue;
 739                 } else if (strcmp(token, "bmap2extent") == 0) {
 740                         ctx->options |= E2F_OPT_CONVERT_BMAP;
 741                         continue;
 742                 } else if (strcmp(token, "fixes_only") == 0) {
 743                         ctx->options |= E2F_OPT_FIXES_ONLY;
 744                         continue;
 745                 } else if (strcmp(token, "unshare_blocks") == 0) {
 746                         ctx->options |= E2F_OPT_UNSHARE_BLOCKS;
 747                         ctx->options |= E2F_OPT_FORCE;
 748                         continue;
 749                 } else {
 750                         fprintf(stderr, _("Unknown extended option: %s\n"),
 751                                 token);
 752                         extended_usage++;
 753                 }
 754         }
 755         free(buf);
 756
 757         if (extended_usage) {
 758                 fputs(_("\nExtended options are separated by commas, "
 759                        "and may take an argument which\n"
 760                        "is set off by an equals ('=') sign.  "
 761                        "Valid extended options are:\n\n"), stderr);
 762                 fputs(_("\tea_ver=<ea_version (1 or 2)>\n"), stderr);
 763                 fputs("\tfragcheck\n", stderr);
 764                 fputs("\tjournal_only\n", stderr);
 765                 fputs("\tdiscard\n", stderr);
 766                 fputs("\tnodiscard\n", stderr);
 767                 fputs("\toptimize_extents\n", stderr);
 768                 fputs("\tno_optimize_extents\n", stderr);
 769                 fputs("\tinode_count_fullmap\n", stderr);
 770                 fputs("\tno_inode_count_fullmap\n", stderr);
 771                 fputs(_("\treadahead_kb=<buffer size>\n"), stderr);
 772                 fputs("\tbmap2extent\n", stderr);
 773                 fputs("\tunshare_blocks\n", stderr);
 774                 fputs("\tfixes_only\n", stderr);
 775                 fputc('\n', stderr);
 776                 exit(1);
 777         }
 778 }
 779
 780 static void syntax_err_report(const char *filename, long err, int line_num)
 781 {
 782         fprintf(stderr,
 783                 _("Syntax error in e2fsck config file (%s, line #%d)\n\t%s\n"),
 784                 filename, line_num, error_message(err));
 785         exit(FSCK_ERROR);
 786 }
 787
 788 static const char *config_fn[] = { ROOT_SYSCONFDIR "/e2fsck.conf", 0 };
 789
 790 static errcode_t PRS(int argc, char *argv[], e2fsck_t *ret_ctx)
 791 {
 792         int             flush = 0;
 793         int             c, fd;
 794 #ifdef MTRACE
 795         extern void     *mallwatch;
 796 #endif
 797         e2fsck_t        ctx;
 798         errcode_t       retval;
 799 #ifdef HAVE_SIGNAL_H
 800         struct sigaction        sa;
 801 #endif
 802         char            *extended_opts = 0;
 803         char            *cp;
 804         int             res;            /* result of sscanf */
 805 #ifdef CONFIG_JBD_DEBUG
 806         char            *jbd_debug;
 807 #endif
 808         unsigned long long phys_mem_kb;
 809
 810         retval = e2fsck_allocate_context(&ctx);
 811         if (retval)
 812                 return retval;
 813
 814         *ret_ctx = ctx;
 815         e2fsck_global_ctx = ctx;
 816
 817         setvbuf(stdout, NULL, _IONBF, BUFSIZ);
 818         setvbuf(stderr, NULL, _IONBF, BUFSIZ);
 819         if (getenv("E2FSCK_FORCE_INTERACTIVE") || (isatty(0) && isatty(1))) {
 820                 ctx->interactive = 1;
 821         } else {
 822                 ctx->start_meta[0] = '\001';
 823                 ctx->stop_meta[0] = '\002';
 824         }
 825         memset(bar, '=', sizeof(bar)-1);
 826         memset(spaces, ' ', sizeof(spaces)-1);
 827         add_error_table(&et_ext2_error_table);
 828         add_error_table(&et_prof_error_table);
 829         blkid_get_cache(&ctx->blkid, NULL);
 830
 831         if (argc && *argv)
 832                 ctx->program_name = *argv;
 833         else
 834                 ctx->program_name = "e2fsck";
 835
 836         phys_mem_kb = get_memory_size() / 1024;
 837         ctx->readahead_kb = ~0ULL;
 838         while ((c = getopt(argc, argv, "panyrcC:B:dE:fvtFVM:b:I:j:P:l:L:N:SsDkz:")) != EOF)
 839                 switch (c) {
 840                 case 'C':
 841                         ctx->progress = e2fsck_update_progress;
 842                         res = sscanf(optarg, "%d", &ctx->progress_fd);
 843                         if (res != 1)
 844                                 goto sscanf_err;
 845
 846                         if (ctx->progress_fd < 0) {
 847                                 ctx->progress = 0;
 848                                 ctx->progress_fd = ctx->progress_fd * -1;
 849                         }
 850                         if (!ctx->progress_fd)
 851                                 break;
 852                         /* Validate the file descriptor to avoid disasters */
 853                         fd = dup(ctx->progress_fd);
 854                         if (fd < 0) {
 855                                 fprintf(stderr,
 856                                 _("Error validating file descriptor %d: %s\n"),
 857                                         ctx->progress_fd,
 858                                         error_message(errno));
 859                                 fatal_error(ctx,
 860                         _("Invalid completion information file descriptor"));
 861                         } else
 862                                 close(fd);
 863                         break;
 864                 case 'D':
 865                         ctx->options |= E2F_OPT_COMPRESS_DIRS;
 866                         break;
 867                 case 'E':
 868                         extended_opts = optarg;
 869                         break;
 870                 case 'p':
 871                 case 'a':
 872                         if (ctx->options & (E2F_OPT_YES|E2F_OPT_NO)) {
 873                         conflict_opt:
 874                                 fatal_error(ctx,
 875         _("Only one of the options -p/-a, -n or -y may be specified."));
 876                         }
 877                         ctx->options |= E2F_OPT_PREEN;
 878                         break;
 879                 case 'n':
 880                         if (ctx->options & (E2F_OPT_YES|E2F_OPT_PREEN))
 881                                 goto conflict_opt;
 882                         ctx->options |= E2F_OPT_NO;
 883                         break;
 884                 case 'y':
 885                         if (ctx->options & (E2F_OPT_PREEN|E2F_OPT_NO))
 886                                 goto conflict_opt;
 887                         ctx->options |= E2F_OPT_YES;
 888                         break;
 889                 case 't':
 890 #ifdef RESOURCE_TRACK
 891                         if (ctx->options & E2F_OPT_TIME)
 892                                 ctx->options |= E2F_OPT_TIME2;
 893                         else
 894                                 ctx->options |= E2F_OPT_TIME;
 895 #else
 896                         fprintf(stderr, _("The -t option is not "
 897                                 "supported on this version of e2fsck.\n"));
 898 #endif
 899                         break;
 900                 case 'c':
 901                         if (cflag++)
 902                                 ctx->options |= E2F_OPT_WRITECHECK;
 903                         ctx->options |= E2F_OPT_CHECKBLOCKS;
 904                         break;
 905                 case 'r':
 906                         /* What we do by default, anyway! */
 907                         break;
 908                 case 'b':
 909                         res = sscanf(optarg, "%llu", &ctx->use_superblock);
 910                         if (res != 1)
 911                                 goto sscanf_err;
 912                         ctx->flags |= E2F_FLAG_SB_SPECIFIED;
 913                         break;
 914                 case 'B':
 915                         ctx->blocksize = atoi(optarg);
 916                         break;
 917                 case 'I':
 918                         res = sscanf(optarg, "%d", &ctx->inode_buffer_blocks);
 919                         if (res != 1)
 920                                 goto sscanf_err;
 921                         break;
 922                 case 'j':
 923                         ctx->journal_name = blkid_get_devname(ctx->blkid,
 924                                                               optarg, NULL);
 925                         if (!ctx->journal_name) {
 926                                 com_err(ctx->program_name, 0,
 927                                         _("Unable to resolve '%s'"),
 928                                         optarg);
 929                                 fatal_error(ctx, 0);
 930                         }
 931                         break;
 932                 case 'P':
 933                         res = sscanf(optarg, "%d", &ctx->process_inode_size);
 934                         if (res != 1)
 935                                 goto sscanf_err;
 936                         break;
 937                 case 'L':
 938                         replace_bad_blocks++;
 939                         /* fall through */
 940                 case 'l':
 941                         if (bad_blocks_file)
 942                                 free(bad_blocks_file);
 943                         bad_blocks_file = string_copy(ctx, optarg, 0);
 944                         break;
 945                 case 'd':
 946                         ctx->options |= E2F_OPT_DEBUG;
 947                         break;
 948                 case 'f':
 949                         ctx->options |= E2F_OPT_FORCE;
 950                         break;
 951                 case 'F':
 952                         flush = 1;
 953                         break;
 954                 case 'v':
 955                         verbose = 1;
 956                         break;
 957                 case 'V':
 958                         show_version_only = 1;
 959                         break;
 960 #ifdef MTRACE
 961                 case 'M':
 962                         mallwatch = (void *) strtol(optarg, NULL, 0);
 963                         break;
 964 #endif
 965                 case 'N':
 966                         ctx->device_name = string_copy(ctx, optarg, 0);
 967                         break;
 968                 case 'k':
 969                         keep_bad_blocks++;
 970                         break;
 971                 case 'z':
 972                         ctx->undo_file = optarg;
 973                         break;
 974                 default:
 975                         usage(ctx);
 976                 }
 977         if (show_version_only)
 978                 return 0;
 979         if (optind != argc - 1)
 980                 usage(ctx);
 981         if ((ctx->options & E2F_OPT_NO) &&
 982             (ctx->options & E2F_OPT_COMPRESS_DIRS)) {
 983                 com_err(ctx->program_name, 0, "%s",
 984                         _("The -n and -D options are incompatible."));
 985                 fatal_error(ctx, 0);
 986         }
 987         if ((ctx->options & E2F_OPT_NO) && cflag) {
 988                 com_err(ctx->program_name, 0, "%s",
 989                         _("The -n and -c options are incompatible."));
 990                 fatal_error(ctx, 0);
 991         }
 992         if ((ctx->options & E2F_OPT_NO) && bad_blocks_file) {
 993                 com_err(ctx->program_name, 0, "%s",
 994                         _("The -n and -l/-L options are incompatible."));
 995                 fatal_error(ctx, 0);
 996         }
 997         if (ctx->options & E2F_OPT_NO)
 998                 ctx->options |= E2F_OPT_READONLY;
 999
1000         ctx->io_options = strchr(argv[optind], '?');
1001         if (ctx->io_options)
1002                 *ctx->io_options++ = 0;
1003         ctx->filesystem_name = blkid_get_devname(ctx->blkid, argv[optind], 0);
1004         if (!ctx->filesystem_name) {
1005                 com_err(ctx->program_name, 0, _("Unable to resolve '%s'"),
1006                         argv[optind]);
1007                 fatal_error(ctx, 0);
1008         }
1009         if (extended_opts)
1010                 parse_extended_opts(ctx, extended_opts);
1011
1012         /* Complain about mutually exclusive rebuilding activities */
1013         if (getenv("E2FSCK_FIXES_ONLY"))
1014                 ctx->options |= E2F_OPT_FIXES_ONLY;
1015         if ((ctx->options & E2F_OPT_COMPRESS_DIRS) &&
1016             (ctx->options & E2F_OPT_FIXES_ONLY)) {
1017                 com_err(ctx->program_name, 0, "%s",
1018                         _("The -D and -E fixes_only options are incompatible."));
1019                 fatal_error(ctx, 0);
1020         }
1021         if ((ctx->options & E2F_OPT_CONVERT_BMAP) &&
1022             (ctx->options & E2F_OPT_FIXES_ONLY)) {
1023                 com_err(ctx->program_name, 0, "%s",
1024                         _("The -E bmap2extent and fixes_only options are incompatible."));
1025                 fatal_error(ctx, 0);
1026         }
1027
1028         if ((cp = getenv("E2FSCK_CONFIG")) != NULL)
1029                 config_fn[0] = cp;
1030         profile_set_syntax_err_cb(syntax_err_report);
1031         profile_init(config_fn, &ctx->profile);
1032
1033         profile_get_boolean(ctx->profile, "options", "report_time", 0, 0,
1034                             &c);
1035         if (c)
1036                 ctx->options |= E2F_OPT_TIME | E2F_OPT_TIME2;
1037         profile_get_boolean(ctx->profile, "options", "report_verbose", 0, 0,
1038                             &c);
1039         if (c)
1040                 verbose = 1;
1041
1042         profile_get_boolean(ctx->profile, "options", "no_optimize_extents",
1043                             0, 0, &c);
1044         if (c)
1045                 ctx->options |= E2F_OPT_NOOPT_EXTENTS;
1046
1047         profile_get_boolean(ctx->profile, "options", "inode_count_fullmap",
1048                             0, 0, &c);
1049         if (c)
1050                 ctx->options |= E2F_OPT_ICOUNT_FULLMAP;
1051
1052         if (ctx->readahead_kb == ~0ULL) {
1053                 profile_get_integer(ctx->profile, "options",
1054                                     "readahead_mem_pct", 0, -1, &c);
1055                 if (c >= 0 && c <= 100)
1056                         ctx->readahead_kb = phys_mem_kb * c / 100;
1057                 profile_get_integer(ctx->profile, "options",
1058                                     "readahead_kb", 0, -1, &c);
1059                 if (c >= 0)
1060                         ctx->readahead_kb = c;
1061                 if (ctx->readahead_kb != ~0ULL &&
1062                     ctx->readahead_kb > phys_mem_kb)
1063                         ctx->readahead_kb = phys_mem_kb;
1064         }
1065
1066         /* Turn off discard in read-only mode */
1067         if ((ctx->options & E2F_OPT_NO) &&
1068             (ctx->options & E2F_OPT_DISCARD))
1069                 ctx->options &= ~E2F_OPT_DISCARD;
1070
1071         if (flush) {
1072                 fd = open(ctx->filesystem_name, O_RDONLY, 0);
1073                 if (fd < 0) {
1074                         com_err("open", errno,
1075                                 _("while opening %s for flushing"),
1076                                 ctx->filesystem_name);
1077                         fatal_error(ctx, 0);
1078                 }
1079                 if ((retval = ext2fs_sync_device(fd, 1))) {
1080                         com_err("ext2fs_sync_device", retval,
1081                                 _("while trying to flush %s"),
1082                                 ctx->filesystem_name);
1083                         fatal_error(ctx, 0);
1084                 }
1085                 close(fd);
1086         }
1087         if (cflag && bad_blocks_file) {
1088                 fprintf(stderr, "%s", _("The -c and the -l/-L options may not "
1089                                         "be both used at the same time.\n"));
1090                 exit(FSCK_USAGE);
1091         }
1092 #ifdef HAVE_SIGNAL_H
1093         /*
1094          * Set up signal action
1095          */
1096         memset(&sa, 0, sizeof(struct sigaction));
1097         sa.sa_handler = signal_cancel;
1098         sigaction(SIGINT, &sa, 0);
1099         sigaction(SIGTERM, &sa, 0);
1100 #ifdef SA_RESTART
1101         sa.sa_flags = SA_RESTART;
1102 #endif
1103         sa.sa_handler = signal_progress_on;
1104         sigaction(SIGUSR1, &sa, 0);
1105         sa.sa_handler = signal_progress_off;
1106         sigaction(SIGUSR2, &sa, 0);
1107 #endif
1108
1109         /* Update our PATH to include /sbin if we need to run badblocks  */
1110         if (cflag) {
1111                 char *oldpath = getenv("PATH");
1112                 char *newpath;
1113                 int len = sizeof(PATH_SET) + 1;
1114
1115                 if (oldpath)
1116                         len += strlen(oldpath);
1117
1118                 newpath = malloc(len);
1119                 if (!newpath)
1120                         fatal_error(ctx, "Couldn't malloc() newpath");
1121                 strcpy(newpath, PATH_SET);
1122
1123                 if (oldpath) {
1124                         strcat(newpath, ":");
1125                         strcat(newpath, oldpath);
1126                 }
1127                 putenv(newpath);
1128         }
1129 #ifdef CONFIG_JBD_DEBUG
1130         jbd_debug = getenv("E2FSCK_JBD_DEBUG");
1131         if (jbd_debug) {
1132                 res = sscanf(jbd_debug, "%d", &journal_enable_debug);
1133                 if (res != 1) {
1134                         fprintf(stderr,
1135                                 _("E2FSCK_JBD_DEBUG \"%s\" not an integer\n\n"),
1136                                 jbd_debug);
1137                         exit (1);
1138                 }
1139         }
1140 #endif
1141         return 0;
1142
1143 sscanf_err:
1144         fprintf(stderr, _("\nInvalid non-numeric argument to -%c (\"%s\")\n\n"),
1145                 c, optarg);
1146         exit (1);
1147 }
1148
1149 static errcode_t try_open_fs(e2fsck_t ctx, int flags, io_manager io_ptr,
1150                              ext2_filsys *ret_fs)
1151 {
1152         errcode_t retval;
1153
1154         *ret_fs = NULL;
1155         if (ctx->superblock && ctx->blocksize) {
1156                 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
1157                                       flags, ctx->superblock, ctx->blocksize,
1158                                       io_ptr, ret_fs);
1159         } else if (ctx->superblock) {
1160                 int blocksize;
1161                 for (blocksize = EXT2_MIN_BLOCK_SIZE;
1162                      blocksize <= EXT2_MAX_BLOCK_SIZE; blocksize *= 2) {
1163                         if (*ret_fs) {
1164                                 ext2fs_free(*ret_fs);
1165                                 *ret_fs = NULL;
1166                         }
1167                         retval = ext2fs_open2(ctx->filesystem_name,
1168                                               ctx->io_options, flags,
1169                                               ctx->superblock, blocksize,
1170                                               io_ptr, ret_fs);
1171                         if (!retval)
1172                                 break;
1173                 }
1174         } else
1175                 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
1176                                       flags, 0, 0, io_ptr, ret_fs);
1177
1178         if (retval == 0) {
1179                 (*ret_fs)->priv_data = ctx;
1180                 e2fsck_set_bitmap_type(*ret_fs, EXT2FS_BMAP64_RBTREE,
1181                                        "default", NULL);
1182         }
1183         return retval;
1184 }
1185
1186 static const char *my_ver_string = E2FSPROGS_VERSION;
1187 static const char *my_ver_date = E2FSPROGS_DATE;
1188
1189 static errcode_t e2fsck_check_mmp(ext2_filsys fs, e2fsck_t ctx)
1190 {
1191         struct mmp_struct *mmp_s;
1192         unsigned int mmp_check_interval;
1193         errcode_t retval = 0;
1194         struct problem_context pctx;
1195         unsigned int wait_time = 0;
1196
1197         clear_problem_context(&pctx);
1198         if (fs->mmp_buf == NULL) {
1199                 retval = ext2fs_get_mem(fs->blocksize, &fs->mmp_buf);
1200                 if (retval)
1201                         goto check_error;
1202         }
1203
1204         retval = ext2fs_mmp_read(fs, fs->super->s_mmp_block, fs->mmp_buf);
1205         if (retval)
1206                 goto check_error;
1207
1208         mmp_s = fs->mmp_buf;
1209
1210         mmp_check_interval = fs->super->s_mmp_update_interval;
1211         if (mmp_check_interval < EXT4_MMP_MIN_CHECK_INTERVAL)
1212                 mmp_check_interval = EXT4_MMP_MIN_CHECK_INTERVAL;
1213
1214         /*
1215          * If check_interval in MMP block is larger, use that instead of
1216          * check_interval from the superblock.
1217          */
1218         if (mmp_s->mmp_check_interval > mmp_check_interval)
1219                 mmp_check_interval = mmp_s->mmp_check_interval;
1220
1221         wait_time = mmp_check_interval * 2 + 1;
1222
1223         if (mmp_s->mmp_seq == EXT4_MMP_SEQ_CLEAN)
1224                 retval = 0;
1225         else if (mmp_s->mmp_seq == EXT4_MMP_SEQ_FSCK)
1226                 retval = EXT2_ET_MMP_FSCK_ON;
1227         else if (mmp_s->mmp_seq > EXT4_MMP_SEQ_MAX)
1228                 retval = EXT2_ET_MMP_UNKNOWN_SEQ;
1229
1230         if (retval)
1231                 goto check_error;
1232
1233         /* Print warning if e2fsck will wait for more than 20 secs. */
1234         if (verbose || wait_time > EXT4_MMP_MIN_CHECK_INTERVAL * 4) {
1235                 log_out(ctx, _("MMP interval is %u seconds and total wait "
1236                                "time is %u seconds. Please wait...\n"),
1237                         mmp_check_interval, wait_time * 2);
1238         }
1239
1240         return 0;
1241
1242 check_error:
1243
1244         if (retval == EXT2_ET_MMP_BAD_BLOCK) {
1245                 if (fix_problem(ctx, PR_0_MMP_INVALID_BLK, &pctx)) {
1246                         fs->super->s_mmp_block = 0;
1247                         ext2fs_mark_super_dirty(fs);
1248                         retval = 0;
1249                 }
1250         } else if (retval == EXT2_ET_MMP_FAILED) {
1251                 com_err(ctx->program_name, retval, "%s",
1252                         _("while checking MMP block"));
1253                 dump_mmp_msg(fs->mmp_buf, NULL);
1254         } else if (retval == EXT2_ET_MMP_FSCK_ON ||
1255                    retval == EXT2_ET_MMP_UNKNOWN_SEQ) {
1256                 com_err(ctx->program_name, retval, "%s",
1257                         _("while checking MMP block"));
1258                 dump_mmp_msg(fs->mmp_buf,
1259                              _("If you are sure the filesystem is not "
1260                                "in use on any node, run:\n"
1261                                "'tune2fs -f -E clear_mmp %s'\n"),
1262                              ctx->device_name);
1263         } else if (retval == EXT2_ET_MMP_MAGIC_INVALID) {
1264                 if (fix_problem(ctx, PR_0_MMP_INVALID_MAGIC, &pctx)) {
1265                         ext2fs_mmp_clear(fs);
1266                         retval = 0;
1267                 }
1268         } else if (retval == EXT2_ET_MMP_CSUM_INVALID) {
1269                 if (fix_problem(ctx, PR_0_MMP_CSUM_INVALID, &pctx)) {
1270                         ext2fs_mmp_clear(fs);
1271                         retval = 0;
1272                 }
1273         } else
1274                 com_err(ctx->program_name, retval, "%s",
1275                         _("while reading MMP block"));
1276         return retval;
1277 }
1278
1279 static int e2fsck_setup_tdb(e2fsck_t ctx, io_manager *io_ptr)
1280 {
1281         errcode_t retval = ENOMEM;
1282         char *tdb_dir = NULL, *tdb_file = NULL;
1283         char *dev_name, *tmp_name;
1284         int free_tdb_dir = 0;
1285
1286         /* (re)open a specific undo file */
1287         if (ctx->undo_file && ctx->undo_file[0] != 0) {
1288                 retval = set_undo_io_backing_manager(*io_ptr);
1289                 if (retval)
1290                         goto err;
1291                 *io_ptr = undo_io_manager;
1292                 retval = set_undo_io_backup_file(ctx->undo_file);
1293                 if (retval)
1294                         goto err;
1295                 printf(_("Overwriting existing filesystem; this can be undone "
1296                          "using the command:\n"
1297                          "    e2undo %s %s\n\n"),
1298                         ctx->undo_file, ctx->filesystem_name);
1299                 return retval;
1300         }
1301
1302         /*
1303          * Configuration via a conf file would be
1304          * nice
1305          */
1306         tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
1307         if (!tdb_dir) {
1308                 profile_get_string(ctx->profile, "defaults",
1309                                    "undo_dir", 0, "/var/lib/e2fsprogs",
1310                                    &tdb_dir);
1311                 free_tdb_dir = 1;
1312         }
1313
1314         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
1315             access(tdb_dir, W_OK)) {
1316                 if (free_tdb_dir)
1317                         free(tdb_dir);
1318                 return 0;
1319         }
1320
1321         tmp_name = strdup(ctx->filesystem_name);
1322         if (!tmp_name)
1323                 goto errout;
1324         dev_name = basename(tmp_name);
1325         tdb_file = malloc(strlen(tdb_dir) + 8 + strlen(dev_name) + 7 + 1);
1326         if (!tdb_file) {
1327                 free(tmp_name);
1328                 goto errout;
1329         }
1330         sprintf(tdb_file, "%s/e2fsck-%s.e2undo", tdb_dir, dev_name);
1331         free(tmp_name);
1332
1333         if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
1334                 retval = errno;
1335                 com_err(ctx->program_name, retval,
1336                         _("while trying to delete %s"), tdb_file);
1337                 goto errout;
1338         }
1339
1340         retval = set_undo_io_backing_manager(*io_ptr);
1341         if (retval)
1342                 goto errout;
1343         *io_ptr = undo_io_manager;
1344         retval = set_undo_io_backup_file(tdb_file);
1345         if (retval)
1346                 goto errout;
1347         printf(_("Overwriting existing filesystem; this can be undone "
1348                  "using the command:\n"
1349                  "    e2undo %s %s\n\n"), tdb_file, ctx->filesystem_name);
1350
1351         if (free_tdb_dir)
1352                 free(tdb_dir);
1353         free(tdb_file);
1354         return 0;
1355
1356 errout:
1357         if (free_tdb_dir)
1358                 free(tdb_dir);
1359         free(tdb_file);
1360 err:
1361         com_err(ctx->program_name, retval, "%s",
1362                 _("while trying to setup undo file\n"));
1363         return retval;
1364 }
1365
1366 int main (int argc, char *argv[])
1367 {
1368         errcode_t       retval = 0, retval2 = 0, orig_retval = 0;
1369         int             exit_value = FSCK_OK;
1370         ext2_filsys     fs = 0;
1371         io_manager      io_ptr;
1372         struct ext2_super_block *sb;
1373         const char      *lib_ver_date;
1374         int             my_ver, lib_ver;
1375         e2fsck_t        ctx;
1376         blk64_t         orig_superblock = ~(blk64_t)0;
1377         struct problem_context pctx;
1378         int flags, run_result, was_changed;
1379         int journal_size;
1380         int sysval, sys_page_size = 4096;
1381         int old_bitmaps;
1382         __u32 features[3];
1383         char *cp;
1384         enum quota_type qtype;
1385
1386         clear_problem_context(&pctx);
1387         sigcatcher_setup();
1388 #ifdef MTRACE
1389         mtrace();
1390 #endif
1391 #ifdef MCHECK
1392         mcheck(0);
1393 #endif
1394 #ifdef ENABLE_NLS
1395         setlocale(LC_MESSAGES, "");
1396         setlocale(LC_CTYPE, "");
1397         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1398         textdomain(NLS_CAT_NAME);
1399         set_com_err_gettext(gettext);
1400 #endif
1401         my_ver = ext2fs_parse_version_string(my_ver_string);
1402         lib_ver = ext2fs_get_library_version(0, &lib_ver_date);
1403         if (my_ver > lib_ver) {
1404                 fprintf( stderr, "%s",
1405                          _("Error: ext2fs library version out of date!\n"));
1406                 show_version_only++;
1407         }
1408
1409         retval = PRS(argc, argv, &ctx);
1410         if (retval) {
1411                 com_err("e2fsck", retval, "%s",
1412                         _("while trying to initialize program"));
1413                 exit(FSCK_ERROR);
1414         }
1415         reserve_stdio_fds();
1416
1417         set_up_logging(ctx);
1418         if (ctx->logf) {
1419                 int i;
1420                 fputs("E2fsck run: ", ctx->logf);
1421                 for (i = 0; i < argc; i++) {
1422                         if (i)
1423                                 fputc(' ', ctx->logf);
1424                         fputs(argv[i], ctx->logf);
1425                 }
1426                 fputc('\n', ctx->logf);
1427         }
1428
1429         init_resource_track(&ctx->global_rtrack, NULL);
1430         if (!(ctx->options & E2F_OPT_PREEN) || show_version_only)
1431                 log_err(ctx, "e2fsck %s (%s)\n", my_ver_string,
1432                          my_ver_date);
1433
1434         if (show_version_only) {
1435                 log_err(ctx, _("\tUsing %s, %s\n"),
1436                         error_message(EXT2_ET_BASE), lib_ver_date);
1437                 exit(FSCK_OK);
1438         }
1439
1440         check_mount(ctx);
1441
1442         if (!(ctx->options & E2F_OPT_PREEN) &&
1443             !(ctx->options & E2F_OPT_NO) &&
1444             !(ctx->options & E2F_OPT_YES)) {
1445                 if (!ctx->interactive)
1446                         fatal_error(ctx,
1447                                     _("need terminal for interactive repairs"));
1448         }
1449         ctx->superblock = ctx->use_superblock;
1450
1451         flags = EXT2_FLAG_SKIP_MMP;
1452 restart:
1453 #ifdef CONFIG_TESTIO_DEBUG
1454         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1455                 io_ptr = test_io_manager;
1456                 test_io_backing_manager = unix_io_manager;
1457         } else
1458 #endif
1459                 io_ptr = unix_io_manager;
1460         flags |= EXT2_FLAG_NOFREE_ON_ERROR;
1461         profile_get_boolean(ctx->profile, "options", "old_bitmaps", 0, 0,
1462                             &old_bitmaps);
1463         if (!old_bitmaps)
1464                 flags |= EXT2_FLAG_64BITS;
1465         if ((ctx->options & E2F_OPT_READONLY) == 0) {
1466                 flags |= EXT2_FLAG_RW;
1467                 if (!(ctx->mount_flags & EXT2_MF_ISROOT &&
1468                       ctx->mount_flags & EXT2_MF_READONLY))
1469                         flags |= EXT2_FLAG_EXCLUSIVE;
1470                 if ((ctx->mount_flags & EXT2_MF_READONLY) &&
1471                     (ctx->options & E2F_OPT_FORCE))
1472                         flags &= ~EXT2_FLAG_EXCLUSIVE;
1473         }
1474
1475         if (ctx->undo_file) {
1476                 retval = e2fsck_setup_tdb(ctx, &io_ptr);
1477                 if (retval)
1478                         exit(FSCK_ERROR);
1479         }
1480
1481         ctx->openfs_flags = flags;
1482         retval = try_open_fs(ctx, flags, io_ptr, &fs);
1483
1484         if (!ctx->superblock && !(ctx->options & E2F_OPT_PREEN) &&
1485             !(ctx->flags & E2F_FLAG_SB_SPECIFIED) &&
1486             ((retval == EXT2_ET_BAD_MAGIC) ||
1487              (retval == EXT2_ET_SB_CSUM_INVALID) ||
1488              (retval == EXT2_ET_CORRUPT_SUPERBLOCK) ||
1489              ((retval == 0) && (retval2 = ext2fs_check_desc(fs))))) {
1490                 if (retval) {
1491                         pctx.errcode = retval;
1492                         fix_problem(ctx, PR_0_OPEN_FAILED, &pctx);
1493                 }
1494                 if (retval2) {
1495                         pctx.errcode = retval2;
1496                         fix_problem(ctx, PR_0_CHECK_DESC_FAILED, &pctx);
1497                 }
1498                 pctx.errcode = 0;
1499                 if (retval2 == ENOMEM || retval2 == EXT2_ET_NO_MEMORY) {
1500                         retval = retval2;
1501                         goto failure;
1502                 }
1503                 if (fs->flags & EXT2_FLAG_NOFREE_ON_ERROR) {
1504                         ext2fs_free(fs);
1505                         fs = NULL;
1506                 }
1507                 if (!fs || (fs->group_desc_count > 1)) {
1508                         log_out(ctx, _("%s: %s trying backup blocks...\n"),
1509                                 ctx->program_name,
1510                                 retval ? _("Superblock invalid,") :
1511                                 _("Group descriptors look bad..."));
1512                         orig_superblock = ctx->superblock;
1513                         get_backup_sb(ctx, fs, ctx->filesystem_name, io_ptr);
1514                         if (fs)
1515                                 ext2fs_close_free(&fs);
1516                         orig_retval = retval;
1517                         retval = try_open_fs(ctx, flags, io_ptr, &fs);
1518                         if ((orig_retval == 0) && retval != 0) {
1519                                 if (fs)
1520                                         ext2fs_close_free(&fs);
1521                                 log_out(ctx, _("%s: %s while using the "
1522                                                "backup blocks"),
1523                                         ctx->program_name,
1524                                         error_message(retval));
1525                                 log_out(ctx, _("%s: going back to original "
1526                                                "superblock\n"),
1527                                         ctx->program_name);
1528                                 ctx->superblock = orig_superblock;
1529                                 retval = try_open_fs(ctx, flags, io_ptr, &fs);
1530                         }
1531                 }
1532         }
1533         if (((retval == EXT2_ET_UNSUPP_FEATURE) ||
1534              (retval == EXT2_ET_RO_UNSUPP_FEATURE)) &&
1535             fs && fs->super) {
1536                 sb = fs->super;
1537                 features[0] = (sb->s_feature_compat &
1538                                ~EXT2_LIB_FEATURE_COMPAT_SUPP);
1539                 features[1] = (sb->s_feature_incompat &
1540                                ~EXT2_LIB_FEATURE_INCOMPAT_SUPP);
1541                 features[2] = (sb->s_feature_ro_compat &
1542                                ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
1543                 if (features[0] || features[1] || features[2])
1544                         goto print_unsupp_features;
1545         }
1546 failure:
1547         if (retval) {
1548                 if (orig_retval)
1549                         retval = orig_retval;
1550                 com_err(ctx->program_name, retval, _("while trying to open %s"),
1551                         ctx->filesystem_name);
1552                 if (retval == EXT2_ET_REV_TOO_HIGH) {
1553                         log_out(ctx, "%s",
1554                                 _("The filesystem revision is apparently "
1555                                   "too high for this version of e2fsck.\n"
1556                                   "(Or the filesystem superblock "
1557                                   "is corrupt)\n\n"));
1558                         fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
1559                 } else if (retval == EXT2_ET_SHORT_READ)
1560                         log_out(ctx, "%s",
1561                                 _("Could this be a zero-length partition?\n"));
1562                 else if ((retval == EPERM) || (retval == EACCES))
1563                         log_out(ctx, _("You must have %s access to the "
1564                                        "filesystem or be root\n"),
1565                                (ctx->options & E2F_OPT_READONLY) ?
1566                                "r/o" : "r/w");
1567                 else if (retval == ENXIO)
1568                         log_out(ctx, "%s",
1569                                 _("Possibly non-existent or swap device?\n"));
1570                 else if (retval == EBUSY)
1571                         log_out(ctx, "%s", _("Filesystem mounted or opened "
1572                                          "exclusively by another program?\n"));
1573                 else if (retval == ENOENT)
1574                         log_out(ctx, "%s",
1575                                 _("Possibly non-existent device?\n"));
1576 #ifdef EROFS
1577                 else if (retval == EROFS)
1578                         log_out(ctx, "%s", _("Disk write-protected; use the "
1579                                              "-n option to do a read-only\n"
1580                                              "check of the device.\n"));
1581 #endif
1582                 else {
1583                         /*
1584                          * Let's try once more will less consistency checking
1585                          * so that we are able to recover from more errors
1586                          * (e.g. some tool messing up some value in the sb).
1587                          */
1588                         if ((retval == EXT2_ET_CORRUPT_SUPERBLOCK) &&
1589                             !(flags & EXT2_FLAG_IGNORE_SB_ERRORS)) {
1590                                 if (fs)
1591                                         ext2fs_close_free(&fs);
1592                                 log_out(ctx, _("%s: Trying to load superblock "
1593                                         "despite errors...\n"),
1594                                         ctx->program_name);
1595                                 flags |= EXT2_FLAG_IGNORE_SB_ERRORS;
1596                                 /*
1597                                  * If we tried backup sb, revert to the
1598                                  * original one now.
1599                                  */
1600                                 if (orig_superblock != ~(blk64_t)0)
1601                                         ctx->superblock = orig_superblock;
1602                                 goto restart;
1603                         }
1604                         fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
1605                         if (retval == EXT2_ET_BAD_MAGIC)
1606                                 check_plausibility(ctx->filesystem_name,
1607                                                    CHECK_FS_EXIST, NULL);
1608                 }
1609                 fatal_error(ctx, 0);
1610         }
1611         /*
1612          * We only update the master superblock because (a) paranoia;
1613          * we don't want to corrupt the backup superblocks, and (b) we
1614          * don't need to update the mount count and last checked
1615          * fields in the backup superblock (the kernel doesn't update
1616          * the backup superblocks anyway).  With newer versions of the
1617          * library this flag is set by ext2fs_open2(), but we set this
1618          * here just to be sure.  (No, we don't support e2fsck running
1619          * with some other libext2fs than the one that it was shipped
1620          * with, but just in case....)
1621          */
1622         fs->flags |= EXT2_FLAG_MASTER_SB_ONLY;
1623
1624         if (!(ctx->flags & E2F_FLAG_GOT_DEVSIZE)) {
1625                 __u32 blocksize = EXT2_BLOCK_SIZE(fs->super);
1626                 int need_restart = 0;
1627
1628                 pctx.errcode = ext2fs_get_device_size2(ctx->filesystem_name,
1629                                                        blocksize,
1630                                                        &ctx->num_blocks);
1631                 /*
1632                  * The floppy driver refuses to allow anyone else to
1633                  * open the device if has been opened with O_EXCL;
1634                  * this is unlike other block device drivers in Linux.
1635                  * To handle this, we close the filesystem and then
1636                  * reopen the filesystem after we get the device size.
1637                  */
1638                 if (pctx.errcode == EBUSY) {
1639                         ext2fs_close_free(&fs);
1640                         need_restart++;
1641                         pctx.errcode =
1642                                 ext2fs_get_device_size2(ctx->filesystem_name,
1643                                                         blocksize,
1644                                                         &ctx->num_blocks);
1645                 }
1646                 if (pctx.errcode == EXT2_ET_UNIMPLEMENTED)
1647                         ctx->num_blocks = 0;
1648                 else if (pctx.errcode) {
1649                         fix_problem(ctx, PR_0_GETSIZE_ERROR, &pctx);
1650                         ctx->flags |= E2F_FLAG_ABORT;
1651                         fatal_error(ctx, 0);
1652                 }
1653                 ctx->flags |= E2F_FLAG_GOT_DEVSIZE;
1654                 if (need_restart)
1655                         goto restart;
1656         }
1657
1658         ctx->fs = fs;
1659         fs->now = ctx->now;
1660         sb = fs->super;
1661
1662         if (sb->s_rev_level > E2FSCK_CURRENT_REV) {
1663                 com_err(ctx->program_name, EXT2_ET_REV_TOO_HIGH,
1664                         _("while trying to open %s"),
1665                         ctx->filesystem_name);
1666         get_newer:
1667                 fatal_error(ctx, _("Get a newer version of e2fsck!"));
1668         }
1669
1670         /*
1671          * Set the device name, which is used whenever we print error
1672          * or informational messages to the user.
1673          */
1674         if (ctx->device_name == 0 &&
1675             (sb->s_volume_name[0] != 0)) {
1676                 ctx->device_name = string_copy(ctx, sb->s_volume_name,
1677                                                sizeof(sb->s_volume_name));
1678         }
1679         if (ctx->device_name == 0)
1680                 ctx->device_name = string_copy(ctx, ctx->filesystem_name, 0);
1681         for (cp = ctx->device_name; *cp; cp++)
1682                 if (isspace(*cp) || *cp == ':')
1683                         *cp = '_';
1684
1685         ehandler_init(fs->io);
1686
1687         if (ext2fs_has_feature_mmp(fs->super) &&
1688             (flags & EXT2_FLAG_SKIP_MMP)) {
1689                 if (e2fsck_check_mmp(fs, ctx))
1690                         fatal_error(ctx, 0);
1691
1692                 /*
1693                  * Restart in order to reopen fs but this time start mmp.
1694                  */
1695                 ext2fs_close_free(&ctx->fs);
1696                 flags &= ~EXT2_FLAG_SKIP_MMP;
1697                 goto restart;
1698         }
1699
1700         if (ctx->logf)
1701                 fprintf(ctx->logf, "Filesystem UUID: %s\n",
1702                         e2p_uuid2str(sb->s_uuid));
1703
1704         /*
1705          * Make sure the ext3 superblock fields are consistent.
1706          */
1707         if ((ctx->mount_flags & (EXT2_MF_MOUNTED | EXT2_MF_BUSY)) == 0) {
1708                 retval = e2fsck_check_ext3_journal(ctx);
1709                 if (retval) {
1710                         com_err(ctx->program_name, retval,
1711                                 _("while checking journal for %s"),
1712                                 ctx->device_name);
1713                         fatal_error(ctx,
1714                                 _("Cannot proceed with file system check"));
1715                 }
1716         }
1717
1718         /*
1719          * Check to see if we need to do ext3-style recovery.  If so,
1720          * do it, and then restart the fsck.
1721          */
1722         if (ext2fs_has_feature_journal_needs_recovery(sb)) {
1723                 if (ctx->options & E2F_OPT_READONLY) {
1724                         log_out(ctx, "%s",
1725                                 _("Warning: skipping journal recovery because "
1726                                   "doing a read-only filesystem check.\n"));
1727                         io_channel_flush(ctx->fs->io);
1728                 } else {
1729                         if (ctx->flags & E2F_FLAG_RESTARTED) {
1730                                 /*
1731                                  * Whoops, we attempted to run the
1732                                  * journal twice.  This should never
1733                                  * happen, unless the hardware or
1734                                  * device driver is being bogus.
1735                                  */
1736                                 com_err(ctx->program_name, 0,
1737                                         _("unable to set superblock flags "
1738                                           "on %s\n"), ctx->device_name);
1739                                 fatal_error(ctx, 0);
1740                         }
1741                         retval = e2fsck_run_ext3_journal(ctx);
1742                         if (retval == EFSBADCRC) {
1743                                 log_out(ctx, _("Journal checksum error "
1744                                                "found in %s\n"),
1745                                         ctx->device_name);
1746                         } else if (retval == EFSCORRUPTED) {
1747                                 log_out(ctx, _("Journal corrupted in %s\n"),
1748                                         ctx->device_name);
1749                         } else if (retval) {
1750                                 com_err(ctx->program_name, retval,
1751                                 _("while recovering journal of %s"),
1752                                         ctx->device_name);
1753                         }
1754                         ext2fs_close_free(&ctx->fs);
1755                         ctx->flags |= E2F_FLAG_RESTARTED;
1756                         goto restart;
1757                 }
1758         }
1759
1760         /*
1761          * Check for compatibility with the feature sets.  We need to
1762          * be more stringent than ext2fs_open().
1763          */
1764         features[0] = sb->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP;
1765         features[1] = sb->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP;
1766         features[2] = (sb->s_feature_ro_compat &
1767                        ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
1768 print_unsupp_features:
1769         if (features[0] || features[1] || features[2]) {
1770                 int     i, j;
1771                 __u32   *mask = features, m;
1772
1773                 log_err(ctx, _("%s has unsupported feature(s):"),
1774                         ctx->filesystem_name);
1775
1776                 for (i=0; i <3; i++,mask++) {
1777                         for (j=0,m=1; j < 32; j++, m<<=1) {
1778                                 if (*mask & m)
1779                                         log_err(ctx, " %s",
1780                                                 e2p_feature2string(i, m));
1781                         }
1782                 }
1783                 log_err(ctx, "\n");
1784                 goto get_newer;
1785         }
1786
1787         if (ext2fs_has_feature_casefold(sb) && !fs->encoding) {
1788                 log_err(ctx, _("%s has unsupported encoding: %0x\n"),
1789                         ctx->filesystem_name, sb->s_encoding);
1790                 goto get_newer;
1791         }
1792
1793         /*
1794          * If the user specified a specific superblock, presumably the
1795          * master superblock has been trashed.  So we mark the
1796          * superblock as dirty, so it can be written out.
1797          */
1798         if (ctx->superblock &&
1799             !(ctx->options & E2F_OPT_READONLY))
1800                 ext2fs_mark_super_dirty(fs);
1801
1802         /*
1803          * Calculate the number of filesystem blocks per pagesize.  If
1804          * fs->blocksize > page_size, set the number of blocks per
1805          * pagesize to 1 to avoid division by zero errors.
1806          */
1807 #ifdef _SC_PAGESIZE
1808         sysval = sysconf(_SC_PAGESIZE);
1809         if (sysval > 0)
1810                 sys_page_size = sysval;
1811 #endif /* _SC_PAGESIZE */
1812         ctx->blocks_per_page = sys_page_size / fs->blocksize;
1813         if (ctx->blocks_per_page == 0)
1814                 ctx->blocks_per_page = 1;
1815
1816         if (ctx->superblock)
1817                 set_latch_flags(PR_LATCH_RELOC, PRL_LATCHED, 0);
1818         ext2fs_mark_valid(fs);
1819         check_super_block(ctx);
1820         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1821                 fatal_error(ctx, 0);
1822         check_if_skip(ctx);
1823         check_resize_inode(ctx);
1824         if (bad_blocks_file)
1825                 read_bad_blocks_file(ctx, bad_blocks_file, replace_bad_blocks);
1826         else if (cflag)
1827                 read_bad_blocks_file(ctx, 0, !keep_bad_blocks); /* Test disk */
1828         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1829                 fatal_error(ctx, 0);
1830
1831         /*
1832          * Mark the system as valid, 'til proven otherwise
1833          */
1834         ext2fs_mark_valid(fs);
1835
1836         retval = ext2fs_read_bb_inode(fs, &fs->badblocks);
1837         if (retval) {
1838                 log_out(ctx, _("%s: %s while reading bad blocks inode\n"),
1839                         ctx->program_name, error_message(retval));
1840                 preenhalt(ctx);
1841                 log_out(ctx, "%s", _("This doesn't bode well, "
1842                                      "but we'll try to go on...\n"));
1843         }
1844
1845         /*
1846          * Save the journal size in megabytes.
1847          * Try and use the journal size from the backup else let e2fsck
1848          * find the default journal size.
1849          */
1850         if (sb->s_jnl_backup_type == EXT3_JNL_BACKUP_BLOCKS)
1851                 journal_size = (sb->s_jnl_blocks[15] << (32 - 20)) |
1852                                (sb->s_jnl_blocks[16] >> 20);
1853         else
1854                 journal_size = -1;
1855
1856         if (ext2fs_has_feature_quota(sb)) {
1857                 /* Quotas were enabled. Do quota accounting during fsck. */
1858                 clear_problem_context(&pctx);
1859                 pctx.errcode = quota_init_context(&ctx->qctx, ctx->fs, 0);
1860                 if (pctx.errcode) {
1861                         fix_problem(ctx, PR_0_QUOTA_INIT_CTX, &pctx);
1862                         fatal_error(ctx, 0);
1863                 }
1864         }
1865
1866         run_result = e2fsck_run(ctx);
1867         e2fsck_clear_progbar(ctx);
1868
1869         if (!ctx->invalid_bitmaps &&
1870             (ctx->flags & E2F_FLAG_JOURNAL_INODE)) {
1871                 if (fix_problem(ctx, PR_6_RECREATE_JOURNAL, &pctx)) {
1872                         if (journal_size < 1024)
1873                                 journal_size = ext2fs_default_journal_size(ext2fs_blocks_count(fs->super));
1874                         if (journal_size < 0) {
1875                                 ext2fs_clear_feature_journal(fs->super);
1876                                 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1877                                 log_out(ctx, "%s: Couldn't determine "
1878                                         "journal size\n", ctx->program_name);
1879                                 goto no_journal;
1880                         }
1881                         log_out(ctx, _("Creating journal (%d blocks): "),
1882                                journal_size);
1883                         fflush(stdout);
1884                         retval = ext2fs_add_journal_inode(fs,
1885                                                           journal_size, 0);
1886                         if (retval) {
1887                                 log_out(ctx, "%s: while trying to create "
1888                                         "journal\n", error_message(retval));
1889                                 goto no_journal;
1890                         }
1891                         log_out(ctx, "%s", _(" Done.\n"));
1892                         log_out(ctx, "%s",
1893                                 _("\n*** journal has been regenerated ***\n"));
1894                 }
1895         }
1896 no_journal:
1897
1898         if (run_result & E2F_FLAG_ABORT) {
1899                 fatal_error(ctx, _("aborted"));
1900         } else if (run_result & E2F_FLAG_CANCEL) {
1901                 log_out(ctx, _("%s: e2fsck canceled.\n"), ctx->device_name ?
1902                         ctx->device_name : ctx->filesystem_name);
1903                 exit_value |= FSCK_CANCELED;
1904         } else if (ctx->qctx && !ctx->invalid_bitmaps) {
1905                 int needs_writeout;
1906
1907                 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1908                         if (*quota_sb_inump(sb, qtype) == 0)
1909                                 continue;
1910                         needs_writeout = 0;
1911                         pctx.num = qtype;
1912                         retval = quota_compare_and_update(ctx->qctx, qtype,
1913                                                           &needs_writeout);
1914                         if ((retval || needs_writeout) &&
1915                             fix_problem(ctx, PR_6_UPDATE_QUOTAS, &pctx)) {
1916                                 pctx.errcode = quota_write_inode(ctx->qctx,
1917                                                                  1 << qtype);
1918                                 if (pctx.errcode)
1919                                         (void) fix_problem(ctx,
1920                                                 PR_6_WRITE_QUOTAS, &pctx);
1921                         }
1922                 }
1923                 quota_release_context(&ctx->qctx);
1924         }
1925
1926         if (run_result == E2F_FLAG_RESTART) {
1927                 log_out(ctx, "%s",
1928                         _("Restarting e2fsck from the beginning...\n"));
1929                 retval = e2fsck_reset_context(ctx);
1930                 if (retval) {
1931                         com_err(ctx->program_name, retval, "%s",
1932                                 _("while resetting context"));
1933                         fatal_error(ctx, 0);
1934                 }
1935                 ext2fs_close_free(&ctx->fs);
1936                 goto restart;
1937         }
1938
1939 #ifdef MTRACE
1940         mtrace_print("Cleanup");
1941 #endif
1942         was_changed = ext2fs_test_changed(fs);
1943         if (!(ctx->flags & E2F_FLAG_RUN_RETURN) &&
1944             !(ctx->options & E2F_OPT_READONLY)) {
1945                 if (ext2fs_test_valid(fs)) {
1946                         if (!(sb->s_state & EXT2_VALID_FS))
1947                                 exit_value |= FSCK_NONDESTRUCT;
1948                         sb->s_state = EXT2_VALID_FS;
1949                         if (check_backup_super_block(ctx))
1950                                 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1951                 } else
1952                         sb->s_state &= ~EXT2_VALID_FS;
1953                 if (!(ctx->flags & E2F_FLAG_TIME_INSANE))
1954                         sb->s_lastcheck = ctx->now;
1955                 sb->s_mnt_count = 0;
1956                 memset(((char *) sb) + EXT4_S_ERR_START, 0, EXT4_S_ERR_LEN);
1957                 pctx.errcode = ext2fs_set_gdt_csum(ctx->fs);
1958                 if (pctx.errcode)
1959                         fix_problem(ctx, PR_6_SET_BG_CHECKSUM, &pctx);
1960                 ext2fs_mark_super_dirty(fs);
1961         }
1962
1963         if (ext2fs_has_feature_shared_blocks(ctx->fs->super) &&
1964             (ctx->options & E2F_OPT_UNSHARE_BLOCKS) &&
1965             (ctx->options & E2F_OPT_NO))
1966                 /* Don't try to write or flush I/O, we just wanted to know whether or
1967                  * not there were enough free blocks to undo deduplication.
1968                  */
1969                 goto skip_write;
1970
1971         if (!(ctx->options & E2F_OPT_READONLY)) {
1972                 e2fsck_write_bitmaps(ctx);
1973                 if (fs->flags & EXT2_FLAG_DIRTY) {
1974                         pctx.errcode = ext2fs_flush(ctx->fs);
1975                         if (pctx.errcode)
1976                                 fix_problem(ctx, PR_6_FLUSH_FILESYSTEM, &pctx);
1977                 }
1978                 pctx.errcode = io_channel_flush(ctx->fs->io);
1979                 if (pctx.errcode)
1980                         fix_problem(ctx, PR_6_IO_FLUSH, &pctx);
1981         }
1982
1983         if (was_changed) {
1984                 int fs_fixed = (ctx->flags & E2F_FLAG_PROBLEMS_FIXED);
1985
1986                 if (fs_fixed)
1987                         exit_value |= FSCK_NONDESTRUCT;
1988                 if (!(ctx->options & E2F_OPT_PREEN)) {
1989 #if 0   /* Do this later; it breaks too many tests' golden outputs */
1990                         log_out(ctx, fs_fixed ?
1991                                 _("\n%s: ***** FILE SYSTEM ERRORS "
1992                                   "CORRECTED *****\n") :
1993                                 _("%s: File system was modified.\n"),
1994                                 ctx->device_name);
1995 #else
1996                         log_out(ctx,
1997                                 _("\n%s: ***** FILE SYSTEM WAS MODIFIED *****\n"),
1998                                 ctx->device_name);
1999 #endif
2000                 }
2001                 if (ctx->mount_flags & EXT2_MF_ISROOT) {
2002                         log_out(ctx, _("%s: ***** REBOOT SYSTEM *****\n"),
2003                                 ctx->device_name);
2004                         exit_value |= FSCK_REBOOT;
2005                 }
2006         }
2007
2008 skip_write:
2009         if (!ext2fs_test_valid(fs) ||
2010             ((exit_value & FSCK_CANCELED) &&
2011              (sb->s_state & EXT2_ERROR_FS))) {
2012                 log_out(ctx, _("\n%s: ********** WARNING: Filesystem still has "
2013                                "errors **********\n\n"), ctx->device_name);
2014                 exit_value |= FSCK_UNCORRECTED;
2015                 exit_value &= ~FSCK_NONDESTRUCT;
2016         }
2017         if (exit_value & FSCK_CANCELED) {
2018                 int     allow_cancellation;
2019
2020                 profile_get_boolean(ctx->profile, "options",
2021                                     "allow_cancellation", 0, 0,
2022                                     &allow_cancellation);
2023                 exit_value &= ~FSCK_NONDESTRUCT;
2024                 if (allow_cancellation && ext2fs_test_valid(fs) &&
2025                     (sb->s_state & EXT2_VALID_FS) &&
2026                     !(sb->s_state & EXT2_ERROR_FS))
2027                         exit_value = 0;
2028         } else
2029                 show_stats(ctx);
2030
2031         print_resource_track(ctx, NULL, &ctx->global_rtrack, ctx->fs->io);
2032
2033         ext2fs_close_free(&ctx->fs);
2034         free(ctx->journal_name);
2035
2036         if (ctx->logf)
2037                 fprintf(ctx->logf, "Exit status: %d\n", exit_value);
2038         e2fsck_free_context(ctx);
2039         remove_error_table(&et_ext2_error_table);
2040         remove_error_table(&et_prof_error_table);
2041         return exit_value;
2042 }