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