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 "uuid/uuid.h"
  54 #include "support/plausible.h"
  55 #include "e2fsck.h"
  56 #include "problem.h"
  57 #include "jfs_user.h"
  58 #include "../version.h"
  59
  60 /* Command line options */
  61 static int cflag;               /* check disk */
  62 static int show_version_only;
  63 static int verbose;
  64
  65 static int replace_bad_blocks;
  66 static int keep_bad_blocks;
  67 static char *bad_blocks_file;
  68
  69 e2fsck_t e2fsck_global_ctx;     /* Try your very best not to use this! */
  70
  71 #ifdef CONFIG_JBD_DEBUG         /* Enabled by configure --enable-jbd-debug */
  72 int journal_enable_debug = -1;
  73 #endif
  74
  75 static void usage(e2fsck_t ctx)
  76 {
  77         fprintf(stderr,
  78                 _("Usage: %s [-panyrcdfktvDFV] [-b superblock] [-B blocksize]\n"
  79                 "\t\t[-l|-L bad_blocks_file] [-C fd] [-j external_journal]\n"
  80                 "\t\t[-E extended-options] [-z undo_file] device\n"),
  81                 ctx->program_name);
  82
  83         fprintf(stderr, "%s", _("\nEmergency help:\n"
  84                 " -p                   Automatic repair (no questions)\n"
  85                 " -n                   Make no changes to the filesystem\n"
  86                 " -y                   Assume \"yes\" to all questions\n"
  87                 " -c                   Check for bad blocks and add them to the badblock list\n"
  88                 " -f                   Force checking even if filesystem is marked clean\n"));
  89         fprintf(stderr, "%s", _(""
  90                 " -v                   Be verbose\n"
  91                 " -b superblock        Use alternative superblock\n"
  92                 " -B blocksize         Force blocksize when looking for superblock\n"
  93                 " -j external_journal  Set location of the external journal\n"
  94                 " -l bad_blocks_file   Add to badblocks list\n"
  95                 " -L bad_blocks_file   Set badblocks list\n"
  96                 " -z undo_file         Create an undo file\n"
  97                 ));
  98
  99         exit(FSCK_USAGE);
 100 }
 101
 102 static void show_stats(e2fsck_t ctx)
 103 {
 104         ext2_filsys fs = ctx->fs;
 105         ext2_ino_t inodes, inodes_used;
 106         blk64_t blocks, blocks_used;
 107         unsigned int dir_links;
 108         unsigned int num_files, num_links;
 109         __u32 *mask, m;
 110         int frag_percent_file = 0, frag_percent_dir = 0, frag_percent_total = 0;
 111         int i, j, printed = 0;
 112
 113         dir_links = 2 * ctx->fs_directory_count - 1;
 114         num_files = ctx->fs_total_count - dir_links;
 115         num_links = ctx->fs_links_count - dir_links;
 116         inodes = fs->super->s_inodes_count;
 117         inodes_used = (fs->super->s_inodes_count -
 118                        fs->super->s_free_inodes_count);
 119         blocks = ext2fs_blocks_count(fs->super);
 120         blocks_used = (ext2fs_blocks_count(fs->super) -
 121                        ext2fs_free_blocks_count(fs->super));
 122
 123         if (inodes_used > 0) {
 124                 frag_percent_file = (10000 * ctx->fs_fragmented) / inodes_used;
 125                 frag_percent_file = (frag_percent_file + 5) / 10;
 126
 127                 frag_percent_dir = (10000 * ctx->fs_fragmented_dir) / inodes_used;
 128                 frag_percent_dir = (frag_percent_dir + 5) / 10;
 129
 130                 frag_percent_total = ((10000 * (ctx->fs_fragmented +
 131                                                 ctx->fs_fragmented_dir))
 132                                       / inodes_used);
 133                 frag_percent_total = (frag_percent_total + 5) / 10;
 134         }
 135
 136         if (!verbose) {
 137                 log_out(ctx, _("%s: %u/%u files (%0d.%d%% non-contiguous), "
 138                                "%llu/%llu blocks\n"),
 139                         ctx->device_name, inodes_used, inodes,
 140                         frag_percent_total / 10, frag_percent_total % 10,
 141                         (unsigned long long) blocks_used,
 142                         (unsigned long long) blocks);
 143                 return;
 144         }
 145         profile_get_boolean(ctx->profile, "options", "report_features", 0, 0,
 146                             &i);
 147         if (verbose && i) {
 148                 log_out(ctx, "\nFilesystem features:");
 149                 mask = &ctx->fs->super->s_feature_compat;
 150                 for (i = 0; i < 3; i++, mask++) {
 151                         for (j = 0, m = 1; j < 32; j++, m <<= 1) {
 152                                 if (*mask & m) {
 153                                         log_out(ctx, " %s",
 154                                                 e2p_feature2string(i, m));
 155                                         printed++;
 156                                 }
 157                         }
 158                 }
 159                 if (printed == 0)
 160                         log_out(ctx, " (none)");
 161                 log_out(ctx, "\n");
 162         }
 163
 164         log_out(ctx, P_("\n%12u inode used (%2.2f%%, out of %u)\n",
 165                         "\n%12u inodes used (%2.2f%%, out of %u)\n",
 166                         inodes_used), inodes_used,
 167                 100.0 * inodes_used / inodes, inodes);
 168         log_out(ctx, P_("%12u non-contiguous file (%0d.%d%%)\n",
 169                         "%12u non-contiguous files (%0d.%d%%)\n",
 170                         ctx->fs_fragmented),
 171                 ctx->fs_fragmented, frag_percent_file / 10,
 172                 frag_percent_file % 10);
 173         log_out(ctx, P_("%12u non-contiguous directory (%0d.%d%%)\n",
 174                         "%12u non-contiguous directories (%0d.%d%%)\n",
 175                         ctx->fs_fragmented_dir),
 176                 ctx->fs_fragmented_dir, frag_percent_dir / 10,
 177                 frag_percent_dir % 10);
 178         log_out(ctx, _("             # of inodes with ind/dind/tind blocks: "
 179                        "%u/%u/%u\n"),
 180                 ctx->fs_ind_count, ctx->fs_dind_count, ctx->fs_tind_count);
 181
 182         for (j=MAX_EXTENT_DEPTH_COUNT-1; j >=0; j--)
 183                 if (ctx->extent_depth_count[j])
 184                         break;
 185         if (++j) {
 186                 log_out(ctx, "%s", _("             Extent depth histogram: "));
 187                 for (i=0; i < j; i++) {
 188                         if (i)
 189                                 fputc('/', stdout);
 190                         log_out(ctx, "%u", ctx->extent_depth_count[i]);
 191                 }
 192                 log_out(ctx, "\n");
 193         }
 194
 195         log_out(ctx, P_("%12llu block used (%2.2f%%, out of %llu)\n",
 196                         "%12llu blocks used (%2.2f%%, out of %llu)\n",
 197                    blocks_used),
 198                 (unsigned long long) blocks_used, 100.0 * blocks_used / blocks,
 199                 (unsigned long long) blocks);
 200         log_out(ctx, P_("%12u bad block\n", "%12u bad blocks\n",
 201                         ctx->fs_badblocks_count), ctx->fs_badblocks_count);
 202         log_out(ctx, P_("%12u large file\n", "%12u large files\n",
 203                         ctx->large_files), ctx->large_files);
 204         log_out(ctx, P_("\n%12u regular file\n", "\n%12u regular files\n",
 205                         ctx->fs_regular_count), ctx->fs_regular_count);
 206         log_out(ctx, P_("%12u directory\n", "%12u directories\n",
 207                         ctx->fs_directory_count), ctx->fs_directory_count);
 208         log_out(ctx, P_("%12u character device file\n",
 209                         "%12u character device files\n", ctx->fs_chardev_count),
 210                 ctx->fs_chardev_count);
 211         log_out(ctx, P_("%12u block device file\n", "%12u block device files\n",
 212                         ctx->fs_blockdev_count), ctx->fs_blockdev_count);
 213         log_out(ctx, P_("%12u fifo\n", "%12u fifos\n", ctx->fs_fifo_count),
 214                 ctx->fs_fifo_count);
 215         log_out(ctx, P_("%12u link\n", "%12u links\n", num_links),
 216                 ctx->fs_links_count - dir_links);
 217         log_out(ctx, P_("%12u symbolic link", "%12u symbolic links",
 218                         ctx->fs_symlinks_count), ctx->fs_symlinks_count);
 219         log_out(ctx, P_(" (%u fast symbolic link)\n",
 220                         " (%u fast symbolic links)\n",
 221                         ctx->fs_fast_symlinks_count),
 222                 ctx->fs_fast_symlinks_count);
 223         log_out(ctx, P_("%12u socket\n", "%12u sockets\n",
 224                         ctx->fs_sockets_count),
 225                 ctx->fs_sockets_count);
 226         log_out(ctx, "------------\n");
 227         log_out(ctx, P_("%12u file\n", "%12u files\n", num_files),
 228                 num_files);
 229 }
 230
 231 static void check_mount(e2fsck_t ctx)
 232 {
 233         errcode_t       retval;
 234         int             cont;
 235
 236         retval = ext2fs_check_if_mounted(ctx->filesystem_name,
 237                                          &ctx->mount_flags);
 238         if (retval) {
 239                 com_err("ext2fs_check_if_mount", retval,
 240                         _("while determining whether %s is mounted."),
 241                         ctx->filesystem_name);
 242                 return;
 243         }
 244
 245         /*
 246          * If the filesystem isn't mounted, or it's the root
 247          * filesystem and it's mounted read-only, and we're not doing
 248          * a read/write check, then everything's fine.
 249          */
 250         if ((!(ctx->mount_flags & (EXT2_MF_MOUNTED | EXT2_MF_BUSY))) ||
 251             ((ctx->mount_flags & EXT2_MF_ISROOT) &&
 252              (ctx->mount_flags & EXT2_MF_READONLY) &&
 253              !(ctx->options & E2F_OPT_WRITECHECK)))
 254                 return;
 255
 256         if (((ctx->options & E2F_OPT_READONLY) ||
 257              ((ctx->options & E2F_OPT_FORCE) &&
 258               (ctx->mount_flags & EXT2_MF_READONLY))) &&
 259             !(ctx->options & E2F_OPT_WRITECHECK)) {
 260                 if (ctx->mount_flags & EXT2_MF_MOUNTED)
 261                         log_out(ctx, _("Warning!  %s is mounted.\n"),
 262                                         ctx->filesystem_name);
 263                 else
 264                         log_out(ctx, _("Warning!  %s is in use.\n"),
 265                                         ctx->filesystem_name);
 266                 return;
 267         }
 268
 269         if (ctx->mount_flags & EXT2_MF_MOUNTED)
 270                 log_out(ctx, _("%s is mounted.\n"), ctx->filesystem_name);
 271         else
 272                 log_out(ctx, _("%s is in use.\n"), ctx->filesystem_name);
 273         if (!ctx->interactive || ctx->mount_flags & EXT2_MF_BUSY)
 274                 fatal_error(ctx, _("Cannot continue, aborting.\n\n"));
 275         puts("\007\007\007\007");
 276         log_out(ctx, "%s", _("\n\nWARNING!!!  "
 277                        "The filesystem is mounted.   "
 278                        "If you continue you ***WILL***\n"
 279                        "cause ***SEVERE*** filesystem damage.\n\n"));
 280         puts("\007\007\007");
 281         cont = ask_yn(ctx, _("Do you really want to continue"), 0);
 282         if (!cont) {
 283                 printf("%s", _("check aborted.\n"));
 284                 exit (0);
 285         }
 286         return;
 287 }
 288
 289 static int is_on_batt(void)
 290 {
 291         FILE    *f;
 292         DIR     *d;
 293         char    tmp[80], tmp2[80], fname[NAME_MAX+30];
 294         unsigned int    acflag;
 295         struct dirent*  de;
 296
 297         f = fopen("/sys/class/power_supply/AC/online", "r");
 298         if (f) {
 299                 if (fscanf(f, "%u\n", &acflag) == 1) {
 300                         fclose(f);
 301                         return (!acflag);
 302                 }
 303                 fclose(f);
 304         }
 305         f = fopen("/proc/apm", "r");
 306         if (f) {
 307                 if (fscanf(f, "%79s %79s %79s %x", tmp, tmp, tmp, &acflag) != 4)
 308                         acflag = 1;
 309                 fclose(f);
 310                 return (acflag != 1);
 311         }
 312         d = opendir("/proc/acpi/ac_adapter");
 313         if (d) {
 314                 while ((de=readdir(d)) != NULL) {
 315                         if (!strncmp(".", de->d_name, 1))
 316                                 continue;
 317                         snprintf(fname, sizeof(fname),
 318                                  "/proc/acpi/ac_adapter/%s/state",
 319                                  de->d_name);
 320                         f = fopen(fname, "r");
 321                         if (!f)
 322                                 continue;
 323                         if (fscanf(f, "%79s %79s", tmp2, tmp) != 2)
 324                                 tmp[0] = 0;
 325                         fclose(f);
 326                         if (strncmp(tmp, "off-line", 8) == 0) {
 327                                 closedir(d);
 328                                 return 1;
 329                         }
 330                 }
 331                 closedir(d);
 332         }
 333         return 0;
 334 }
 335
 336 /*
 337  * This routine checks to see if a filesystem can be skipped; if so,
 338  * it will exit with E2FSCK_OK.  Under some conditions it will print a
 339  * message explaining why a check is being forced.
 340  */
 341 static void check_if_skip(e2fsck_t ctx)
 342 {
 343         ext2_filsys fs = ctx->fs;
 344         struct problem_context pctx;
 345         const char *reason = NULL;
 346         unsigned int reason_arg = 0;
 347         long next_check;
 348         int batt = is_on_batt();
 349         int defer_check_on_battery;
 350         int broken_system_clock;
 351         time_t lastcheck;
 352
 353         if (ctx->flags & E2F_FLAG_PROBLEMS_FIXED)
 354                 return;
 355
 356         profile_get_boolean(ctx->profile, "options", "broken_system_clock",
 357                             0, 0, &broken_system_clock);
 358         if (ctx->flags & E2F_FLAG_TIME_INSANE)
 359                 broken_system_clock = 1;
 360         profile_get_boolean(ctx->profile, "options",
 361                             "defer_check_on_battery", 0, 1,
 362                             &defer_check_on_battery);
 363         if (!defer_check_on_battery)
 364                 batt = 0;
 365
 366         if ((ctx->options & E2F_OPT_FORCE) || bad_blocks_file || cflag)
 367                 return;
 368
 369         if (ctx->options & E2F_OPT_JOURNAL_ONLY)
 370                 goto skip;
 371
 372         lastcheck = fs->super->s_lastcheck;
 373         if (lastcheck > ctx->now)
 374                 lastcheck -= ctx->time_fudge;
 375         if ((fs->super->s_state & EXT2_ERROR_FS) ||
 376             !ext2fs_test_valid(fs))
 377                 reason = _(" contains a file system with errors");
 378         else if ((fs->super->s_state & EXT2_VALID_FS) == 0)
 379                 reason = _(" was not cleanly unmounted");
 380         else if (check_backup_super_block(ctx))
 381                 reason = _(" primary superblock features different from backup");
 382         else if ((fs->super->s_max_mnt_count > 0) &&
 383                  (fs->super->s_mnt_count >=
 384                   (unsigned) fs->super->s_max_mnt_count)) {
 385                 reason = _(" has been mounted %u times without being checked");
 386                 reason_arg = fs->super->s_mnt_count;
 387                 if (batt && (fs->super->s_mnt_count <
 388                              (unsigned) fs->super->s_max_mnt_count*2))
 389                         reason = 0;
 390         } else if (!broken_system_clock && fs->super->s_checkinterval &&
 391                    (ctx->now < lastcheck)) {
 392                 reason = _(" has filesystem last checked time in the future");
 393                 if (batt)
 394                         reason = 0;
 395         } else if (!broken_system_clock && fs->super->s_checkinterval &&
 396                    ((ctx->now - lastcheck) >=
 397                     ((time_t) fs->super->s_checkinterval))) {
 398                 reason = _(" has gone %u days without being checked");
 399                 reason_arg = (ctx->now - fs->super->s_lastcheck)/(3600*24);
 400                 if (batt && ((ctx->now - fs->super->s_lastcheck) <
 401                              fs->super->s_checkinterval*2))
 402                         reason = 0;
 403         } else if (broken_system_clock && fs->super->s_checkinterval) {
 404                 log_out(ctx, "%s: ", ctx->device_name);
 405                 log_out(ctx, "%s",
 406                         _("ignoring check interval, broken_system_clock set\n"));
 407         }
 408
 409         if (reason) {
 410                 log_out(ctx, "%s", ctx->device_name);
 411                 log_out(ctx, reason, reason_arg);
 412                 log_out(ctx, "%s", _(", check forced.\n"));
 413                 return;
 414         }
 415
 416         /*
 417          * Update the global counts from the block group counts.  This
 418          * is needed since modern kernels don't update the global
 419          * counts so as to avoid locking the entire file system.  So
 420          * if the filesystem is not unmounted cleanly, the global
 421          * counts may not be accurate.  Update them here if we can,
 422          * for the benefit of users who might examine the file system
 423          * using dumpe2fs.  (This is for cosmetic reasons only.)
 424          */
 425         clear_problem_context(&pctx);
 426         pctx.ino = fs->super->s_free_inodes_count;
 427         pctx.ino2 = ctx->free_inodes;
 428         if ((pctx.ino != pctx.ino2) &&
 429             !(ctx->options & E2F_OPT_READONLY) &&
 430             fix_problem(ctx, PR_0_FREE_INODE_COUNT, &pctx)) {
 431                 fs->super->s_free_inodes_count = ctx->free_inodes;
 432                 ext2fs_mark_super_dirty(fs);
 433         }
 434         clear_problem_context(&pctx);
 435         pctx.blk = ext2fs_free_blocks_count(fs->super);
 436         pctx.blk2 = ctx->free_blocks;
 437         if ((pctx.blk != pctx.blk2) &&
 438             !(ctx->options & E2F_OPT_READONLY) &&
 439             fix_problem(ctx, PR_0_FREE_BLOCK_COUNT, &pctx)) {
 440                 ext2fs_free_blocks_count_set(fs->super, ctx->free_blocks);
 441                 ext2fs_mark_super_dirty(fs);
 442         }
 443
 444         /* Print the summary message when we're skipping a full check */
 445         log_out(ctx, _("%s: clean, %u/%u files, %llu/%llu blocks"),
 446                 ctx->device_name,
 447                 fs->super->s_inodes_count - fs->super->s_free_inodes_count,
 448                 fs->super->s_inodes_count,
 449                 (unsigned long long) ext2fs_blocks_count(fs->super) -
 450                 ext2fs_free_blocks_count(fs->super),
 451                 (unsigned long long) ext2fs_blocks_count(fs->super));
 452         next_check = 100000;
 453         if (fs->super->s_max_mnt_count > 0) {
 454                 next_check = fs->super->s_max_mnt_count - fs->super->s_mnt_count;
 455                 if (next_check <= 0)
 456                         next_check = 1;
 457         }
 458         if (!broken_system_clock && fs->super->s_checkinterval &&
 459             ((ctx->now - fs->super->s_lastcheck) >= fs->super->s_checkinterval))
 460                 next_check = 1;
 461         if (next_check <= 5) {
 462                 if (next_check == 1) {
 463                         if (batt)
 464                                 log_out(ctx, "%s",
 465                                         _(" (check deferred; on battery)"));
 466                         else
 467                                 log_out(ctx, "%s",
 468                                         _(" (check after next mount)"));
 469                 } else
 470                         log_out(ctx, _(" (check in %ld mounts)"),
 471                                 next_check);
 472         }
 473         log_out(ctx, "\n");
 474 skip:
 475         ext2fs_close_free(&ctx->fs);
 476         e2fsck_free_context(ctx);
 477         exit(FSCK_OK);
 478 }
 479
 480 /*
 481  * For completion notice
 482  */
 483 struct percent_tbl {
 484         int     max_pass;
 485         int     table[32];
 486 };
 487 static struct percent_tbl e2fsck_tbl = {
 488         5, { 0, 70, 90, 92,  95, 100 }
 489 };
 490 static char bar[128], spaces[128];
 491
 492 static float calc_percent(struct percent_tbl *tbl, int pass, int curr,
 493                           int max)
 494 {
 495         float   percent;
 496
 497         if (pass <= 0)
 498                 return 0.0;
 499         if (pass > tbl->max_pass || max == 0)
 500                 return 100.0;
 501         percent = ((float) curr) / ((float) max);
 502         return ((percent * (tbl->table[pass] - tbl->table[pass-1]))
 503                 + tbl->table[pass-1]);
 504 }
 505
 506 void e2fsck_clear_progbar(e2fsck_t ctx)
 507 {
 508         if (!(ctx->flags & E2F_FLAG_PROG_BAR))
 509                 return;
 510
 511         printf("%s%s\r%s", ctx->start_meta, spaces + (sizeof(spaces) - 80),
 512                ctx->stop_meta);
 513         fflush(stdout);
 514         ctx->flags &= ~E2F_FLAG_PROG_BAR;
 515 }
 516
 517 int e2fsck_simple_progress(e2fsck_t ctx, const char *label, float percent,
 518                            unsigned int dpynum)
 519 {
 520         static const char spinner[] = "\\|/-";
 521         int     i;
 522         unsigned int    tick;
 523         struct timeval  tv;
 524         int dpywidth;
 525         int fixed_percent;
 526
 527         if (ctx->flags & E2F_FLAG_PROG_SUPPRESS)
 528                 return 0;
 529
 530         /*
 531          * Calculate the new progress position.  If the
 532          * percentage hasn't changed, then we skip out right
 533          * away.
 534          */
 535         fixed_percent = (int) ((10 * percent) + 0.5);
 536         if (ctx->progress_last_percent == fixed_percent)
 537                 return 0;
 538         ctx->progress_last_percent = fixed_percent;
 539
 540         /*
 541          * If we've already updated the spinner once within
 542          * the last 1/8th of a second, no point doing it
 543          * again.
 544          */
 545         gettimeofday(&tv, NULL);
 546         tick = (tv.tv_sec << 3) + (tv.tv_usec / (1000000 / 8));
 547         if ((tick == ctx->progress_last_time) &&
 548             (fixed_percent != 0) && (fixed_percent != 1000))
 549                 return 0;
 550         ctx->progress_last_time = tick;
 551
 552         /*
 553          * Advance the spinner, and note that the progress bar
 554          * will be on the screen
 555          */
 556         ctx->progress_pos = (ctx->progress_pos+1) & 3;
 557         ctx->flags |= E2F_FLAG_PROG_BAR;
 558
 559         dpywidth = 66 - strlen(label);
 560         dpywidth = 8 * (dpywidth / 8);
 561         if (dpynum)
 562                 dpywidth -= 8;
 563
 564         i = ((percent * dpywidth) + 50) / 100;
 565         printf("%s%s: |%s%s", ctx->start_meta, label,
 566                bar + (sizeof(bar) - (i+1)),
 567                spaces + (sizeof(spaces) - (dpywidth - i + 1)));
 568         if (fixed_percent == 1000)
 569                 fputc('|', stdout);
 570         else
 571                 fputc(spinner[ctx->progress_pos & 3], stdout);
 572         printf(" %4.1f%%  ", percent);
 573         if (dpynum)
 574                 printf("%u\r", dpynum);
 575         else
 576                 fputs(" \r", stdout);
 577         fputs(ctx->stop_meta, stdout);
 578
 579         if (fixed_percent == 1000)
 580                 e2fsck_clear_progbar(ctx);
 581         fflush(stdout);
 582
 583         return 0;
 584 }
 585
 586 static int e2fsck_update_progress(e2fsck_t ctx, int pass,
 587                                   unsigned long cur, unsigned long max)
 588 {
 589         char buf[1024];
 590         float percent;
 591
 592         if (pass == 0)
 593                 return 0;
 594
 595         if (ctx->progress_fd) {
 596                 snprintf(buf, sizeof(buf), "%d %lu %lu %s\n",
 597                          pass, cur, max, ctx->device_name);
 598                 write_all(ctx->progress_fd, buf, strlen(buf));
 599         } else {
 600                 percent = calc_percent(&e2fsck_tbl, pass, cur, max);
 601                 e2fsck_simple_progress(ctx, ctx->device_name,
 602                                        percent, 0);
 603         }
 604         return 0;
 605 }
 606
 607 #define PATH_SET "PATH=/sbin"
 608
 609 /*
 610  * Make sure 0,1,2 file descriptors are open, so that we don't open
 611  * the filesystem using the same file descriptor as stdout or stderr.
 612  */
 613 static void reserve_stdio_fds(void)
 614 {
 615         int     fd = 0;
 616
 617         while (fd <= 2) {
 618                 fd = open("/dev/null", O_RDWR);
 619                 if (fd < 0) {
 620                         fprintf(stderr, _("ERROR: Couldn't open "
 621                                 "/dev/null (%s)\n"),
 622                                 strerror(errno));
 623                         return;
 624                 }
 625         }
 626         (void) close(fd);
 627 }
 628
 629 #ifdef HAVE_SIGNAL_H
 630 static void signal_progress_on(int sig EXT2FS_ATTR((unused)))
 631 {
 632         e2fsck_t ctx = e2fsck_global_ctx;
 633
 634         if (!ctx)
 635                 return;
 636
 637         ctx->progress = e2fsck_update_progress;
 638 }
 639
 640 static void signal_progress_off(int sig EXT2FS_ATTR((unused)))
 641 {
 642         e2fsck_t ctx = e2fsck_global_ctx;
 643
 644         if (!ctx)
 645                 return;
 646
 647         e2fsck_clear_progbar(ctx);
 648         ctx->progress = 0;
 649 }
 650
 651 static void signal_cancel(int sig EXT2FS_ATTR((unused)))
 652 {
 653         e2fsck_t ctx = e2fsck_global_ctx;
 654
 655         if (!ctx)
 656                 exit(FSCK_CANCELED);
 657
 658         ctx->flags |= E2F_FLAG_CANCEL;
 659 }
 660 #endif
 661
 662 static void parse_extended_opts(e2fsck_t ctx, const char *opts)
 663 {
 664         char    *buf, *token, *next, *p, *arg;
 665         int     ea_ver;
 666         int     extended_usage = 0;
 667         unsigned long long reada_kb;
 668
 669         buf = string_copy(ctx, opts, 0);
 670         for (token = buf; token && *token; token = next) {
 671                 p = strchr(token, ',');
 672                 next = 0;
 673                 if (p) {
 674                         *p = 0;
 675                         next = p+1;
 676                 }
 677                 arg = strchr(token, '=');
 678                 if (arg) {
 679                         *arg = 0;
 680                         arg++;
 681                 }
 682                 if (strcmp(token, "ea_ver") == 0) {
 683                         if (!arg) {
 684                                 extended_usage++;
 685                                 continue;
 686                         }
 687                         ea_ver = strtoul(arg, &p, 0);
 688                         if (*p ||
 689                             ((ea_ver != 1) && (ea_ver != 2))) {
 690                                 fprintf(stderr, "%s",
 691                                         _("Invalid EA version.\n"));
 692                                 extended_usage++;
 693                                 continue;
 694                         }
 695                         ctx->ext_attr_ver = ea_ver;
 696                 } else if (strcmp(token, "readahead_kb") == 0) {
 697                         if (!arg) {
 698                                 extended_usage++;
 699                                 continue;
 700                         }
 701                         reada_kb = strtoull(arg, &p, 0);
 702                         if (*p) {
 703                                 fprintf(stderr, "%s",
 704                                         _("Invalid readahead buffer size.\n"));
 705                                 extended_usage++;
 706                                 continue;
 707                         }
 708                         ctx->readahead_kb = reada_kb;
 709                 } else if (strcmp(token, "fragcheck") == 0) {
 710                         ctx->options |= E2F_OPT_FRAGCHECK;
 711                         continue;
 712                 } else if (strcmp(token, "journal_only") == 0) {
 713                         if (arg) {
 714                                 extended_usage++;
 715                                 continue;
 716                         }
 717                         ctx->options |= E2F_OPT_JOURNAL_ONLY;
 718                 } else if (strcmp(token, "discard") == 0) {
 719                         ctx->options |= E2F_OPT_DISCARD;
 720                         continue;
 721                 } else if (strcmp(token, "nodiscard") == 0) {
 722                         ctx->options &= ~E2F_OPT_DISCARD;
 723                         continue;
 724                 } else if (strcmp(token, "optimize_extents") == 0) {
 725                         ctx->options &= ~E2F_OPT_NOOPT_EXTENTS;
 726                         continue;
 727                 } else if (strcmp(token, "no_optimize_extents") == 0) {
 728                         ctx->options |= E2F_OPT_NOOPT_EXTENTS;
 729                         continue;
 730                 } else if (strcmp(token, "inode_count_fullmap") == 0) {
 731                         ctx->options |= E2F_OPT_ICOUNT_FULLMAP;
 732                         continue;
 733                 } else if (strcmp(token, "no_inode_count_fullmap") == 0) {
 734                         ctx->options &= ~E2F_OPT_ICOUNT_FULLMAP;
 735                         continue;
 736                 } else if (strcmp(token, "log_filename") == 0) {
 737                         if (!arg)
 738                                 extended_usage++;
 739                         else
 740                                 ctx->log_fn = string_copy(ctx, arg, 0);
 741                         continue;
 742                 } else if (strcmp(token, "problem_log") == 0) {
 743                         if (!arg)
 744                                 extended_usage++;
 745                         else
 746                                 ctx->problem_log_fn = string_copy(ctx, arg, 0);
 747                         continue;
 748                 } else if (strcmp(token, "bmap2extent") == 0) {
 749                         ctx->options |= E2F_OPT_CONVERT_BMAP;
 750                         continue;
 751                 } else if (strcmp(token, "fixes_only") == 0) {
 752                         ctx->options |= E2F_OPT_FIXES_ONLY;
 753                         continue;
 754                 } else if (strcmp(token, "unshare_blocks") == 0) {
 755                         ctx->options |= E2F_OPT_UNSHARE_BLOCKS;
 756                         ctx->options |= E2F_OPT_FORCE;
 757                         continue;
 758                 } else if (strcmp(token, "check_encoding") == 0) {
 759                         ctx->options |= E2F_OPT_CHECK_ENCODING;
 760                         continue;
 761 #ifdef CONFIG_DEVELOPER_FEATURES
 762                 } else if (strcmp(token, "clear_all_uninit_bits") == 0) {
 763                         ctx->options |= E2F_OPT_CLEAR_UNINIT;
 764                         continue;
 765 #endif
 766                 } else {
 767                         fprintf(stderr, _("Unknown extended option: %s\n"),
 768                                 token);
 769                         extended_usage++;
 770                 }
 771         }
 772         free(buf);
 773
 774         if (extended_usage) {
 775                 fputs(_("\nExtended options are separated by commas, "
 776                        "and may take an argument which\n"
 777                        "is set off by an equals ('=') sign.  "
 778                        "Valid extended options are:\n\n"), stderr);
 779                 fputs(_("\tea_ver=<ea_version (1 or 2)>\n"), stderr);
 780                 fputs("\tfragcheck\n", stderr);
 781                 fputs("\tjournal_only\n", stderr);
 782                 fputs("\tdiscard\n", stderr);
 783                 fputs("\tnodiscard\n", stderr);
 784                 fputs("\toptimize_extents\n", stderr);
 785                 fputs("\tno_optimize_extents\n", stderr);
 786                 fputs("\tinode_count_fullmap\n", stderr);
 787                 fputs("\tno_inode_count_fullmap\n", stderr);
 788                 fputs(_("\treadahead_kb=<buffer size>\n"), stderr);
 789                 fputs("\tbmap2extent\n", stderr);
 790                 fputs("\tunshare_blocks\n", stderr);
 791                 fputs("\tfixes_only\n", stderr);
 792                 fputs("\tcheck_encoding\n", stderr);
 793                 fputc('\n', stderr);
 794                 exit(1);
 795         }
 796 }
 797
 798 static void syntax_err_report(const char *filename, long err, int line_num)
 799 {
 800         fprintf(stderr,
 801                 _("Syntax error in e2fsck config file (%s, line #%d)\n\t%s\n"),
 802                 filename, line_num, error_message(err));
 803         exit(FSCK_ERROR);
 804 }
 805
 806 static const char *config_fn[] = { ROOT_SYSCONFDIR "/e2fsck.conf", 0 };
 807
 808 static errcode_t PRS(int argc, char *argv[], e2fsck_t *ret_ctx)
 809 {
 810         int             flush = 0;
 811         int             c, fd;
 812 #ifdef MTRACE
 813         extern void     *mallwatch;
 814 #endif
 815         e2fsck_t        ctx;
 816         errcode_t       retval;
 817 #ifdef HAVE_SIGNAL_H
 818         struct sigaction        sa;
 819 #endif
 820         char            *extended_opts = 0;
 821         char            *cp;
 822         int             res;            /* result of sscanf */
 823 #ifdef CONFIG_JBD_DEBUG
 824         char            *jbd_debug;
 825 #endif
 826         unsigned long long phys_mem_kb, blk;
 827
 828         retval = e2fsck_allocate_context(&ctx);
 829         if (retval)
 830                 return retval;
 831
 832         *ret_ctx = ctx;
 833         e2fsck_global_ctx = ctx;
 834
 835         setvbuf(stdout, NULL, _IONBF, BUFSIZ);
 836         setvbuf(stderr, NULL, _IONBF, BUFSIZ);
 837         if (getenv("E2FSCK_FORCE_INTERACTIVE") || (isatty(0) && isatty(1))) {
 838                 ctx->interactive = 1;
 839         } else {
 840                 ctx->start_meta[0] = '\001';
 841                 ctx->stop_meta[0] = '\002';
 842         }
 843         memset(bar, '=', sizeof(bar)-1);
 844         memset(spaces, ' ', sizeof(spaces)-1);
 845         add_error_table(&et_ext2_error_table);
 846         add_error_table(&et_prof_error_table);
 847         blkid_get_cache(&ctx->blkid, NULL);
 848
 849         if (argc && *argv)
 850                 ctx->program_name = *argv;
 851         else
 852                 ctx->program_name = "e2fsck";
 853
 854         phys_mem_kb = get_memory_size() / 1024;
 855         ctx->readahead_kb = ~0ULL;
 856         while ((c = getopt(argc, argv, "panyrcC:B:dE:fvtFVM:b:I:j:P:l:L:N:SsDkz:")) != EOF)
 857                 switch (c) {
 858                 case 'C':
 859                         ctx->progress = e2fsck_update_progress;
 860                         res = sscanf(optarg, "%d", &ctx->progress_fd);
 861                         if (res != 1)
 862                                 goto sscanf_err;
 863
 864                         if (ctx->progress_fd < 0) {
 865                                 ctx->progress = 0;
 866                                 ctx->progress_fd = ctx->progress_fd * -1;
 867                         }
 868                         if (!ctx->progress_fd)
 869                                 break;
 870                         /* Validate the file descriptor to avoid disasters */
 871                         fd = dup(ctx->progress_fd);
 872                         if (fd < 0) {
 873                                 fprintf(stderr,
 874                                 _("Error validating file descriptor %d: %s\n"),
 875                                         ctx->progress_fd,
 876                                         error_message(errno));
 877                                 fatal_error(ctx,
 878                         _("Invalid completion information file descriptor"));
 879                         } else
 880                                 close(fd);
 881                         break;
 882                 case 'D':
 883                         ctx->options |= E2F_OPT_COMPRESS_DIRS;
 884                         break;
 885                 case 'E':
 886                         extended_opts = optarg;
 887                         break;
 888                 case 'p':
 889                 case 'a':
 890                         if (ctx->options & (E2F_OPT_YES|E2F_OPT_NO)) {
 891                         conflict_opt:
 892                                 fatal_error(ctx,
 893         _("Only one of the options -p/-a, -n or -y may be specified."));
 894                         }
 895                         ctx->options |= E2F_OPT_PREEN;
 896                         break;
 897                 case 'n':
 898                         if (ctx->options & (E2F_OPT_YES|E2F_OPT_PREEN))
 899                                 goto conflict_opt;
 900                         ctx->options |= E2F_OPT_NO;
 901                         break;
 902                 case 'y':
 903                         if (ctx->options & (E2F_OPT_PREEN|E2F_OPT_NO))
 904                                 goto conflict_opt;
 905                         ctx->options |= E2F_OPT_YES;
 906                         break;
 907                 case 't':
 908 #ifdef RESOURCE_TRACK
 909                         if (ctx->options & E2F_OPT_TIME)
 910                                 ctx->options |= E2F_OPT_TIME2;
 911                         else
 912                                 ctx->options |= E2F_OPT_TIME;
 913 #else
 914                         fprintf(stderr, _("The -t option is not "
 915                                 "supported on this version of e2fsck.\n"));
 916 #endif
 917                         break;
 918                 case 'c':
 919                         if (cflag++)
 920                                 ctx->options |= E2F_OPT_WRITECHECK;
 921                         ctx->options |= E2F_OPT_CHECKBLOCKS;
 922                         break;
 923                 case 'r':
 924                         /* What we do by default, anyway! */
 925                         break;
 926                 case 'b':
 927                         res = sscanf(optarg, "%llu", &blk);
 928                         ctx->use_superblock = blk;
 929                         if (res != 1)
 930                                 goto sscanf_err;
 931                         ctx->flags |= E2F_FLAG_SB_SPECIFIED;
 932                         break;
 933                 case 'B':
 934                         ctx->blocksize = atoi(optarg);
 935                         break;
 936                 case 'I':
 937                         res = sscanf(optarg, "%d", &ctx->inode_buffer_blocks);
 938                         if (res != 1)
 939                                 goto sscanf_err;
 940                         break;
 941                 case 'j':
 942                         ctx->journal_name = blkid_get_devname(ctx->blkid,
 943                                                               optarg, NULL);
 944                         if (!ctx->journal_name) {
 945                                 com_err(ctx->program_name, 0,
 946                                         _("Unable to resolve '%s'"),
 947                                         optarg);
 948                                 fatal_error(ctx, 0);
 949                         }
 950                         break;
 951                 case 'P':
 952                         res = sscanf(optarg, "%d", &ctx->process_inode_size);
 953                         if (res != 1)
 954                                 goto sscanf_err;
 955                         break;
 956                 case 'L':
 957                         replace_bad_blocks++;
 958                         /* fall through */
 959                 case 'l':
 960                         if (bad_blocks_file)
 961                                 free(bad_blocks_file);
 962                         bad_blocks_file = string_copy(ctx, optarg, 0);
 963                         break;
 964                 case 'd':
 965                         ctx->options |= E2F_OPT_DEBUG;
 966                         break;
 967                 case 'f':
 968                         ctx->options |= E2F_OPT_FORCE;
 969                         break;
 970                 case 'F':
 971                         flush = 1;
 972                         break;
 973                 case 'v':
 974                         verbose = 1;
 975                         break;
 976                 case 'V':
 977                         show_version_only = 1;
 978                         break;
 979 #ifdef MTRACE
 980                 case 'M':
 981                         mallwatch = (void *) strtol(optarg, NULL, 0);
 982                         break;
 983 #endif
 984                 case 'N':
 985                         ctx->device_name = string_copy(ctx, optarg, 0);
 986                         break;
 987                 case 'k':
 988                         keep_bad_blocks++;
 989                         break;
 990                 case 'z':
 991                         ctx->undo_file = optarg;
 992                         break;
 993                 default:
 994                         usage(ctx);
 995                 }
 996         if (show_version_only)
 997                 return 0;
 998         if (optind != argc - 1)
 999                 usage(ctx);
1000         if ((ctx->options & E2F_OPT_NO) &&
1001             (ctx->options & E2F_OPT_COMPRESS_DIRS)) {
1002                 com_err(ctx->program_name, 0, "%s",
1003                         _("The -n and -D options are incompatible."));
1004                 fatal_error(ctx, 0);
1005         }
1006         if ((ctx->options & E2F_OPT_NO) && cflag) {
1007                 com_err(ctx->program_name, 0, "%s",
1008                         _("The -n and -c options are incompatible."));
1009                 fatal_error(ctx, 0);
1010         }
1011         if ((ctx->options & E2F_OPT_NO) && bad_blocks_file) {
1012                 com_err(ctx->program_name, 0, "%s",
1013                         _("The -n and -l/-L options are incompatible."));
1014                 fatal_error(ctx, 0);
1015         }
1016         if (ctx->options & E2F_OPT_NO)
1017                 ctx->options |= E2F_OPT_READONLY;
1018
1019         ctx->io_options = strchr(argv[optind], '?');
1020         if (ctx->io_options)
1021                 *ctx->io_options++ = 0;
1022         ctx->filesystem_name = blkid_get_devname(ctx->blkid, argv[optind], 0);
1023         if (!ctx->filesystem_name) {
1024                 com_err(ctx->program_name, 0, _("Unable to resolve '%s'"),
1025                         argv[optind]);
1026                 fatal_error(ctx, 0);
1027         }
1028         if (extended_opts)
1029                 parse_extended_opts(ctx, extended_opts);
1030
1031         /* Complain about mutually exclusive rebuilding activities */
1032         if (getenv("E2FSCK_FIXES_ONLY"))
1033                 ctx->options |= E2F_OPT_FIXES_ONLY;
1034         if ((ctx->options & E2F_OPT_COMPRESS_DIRS) &&
1035             (ctx->options & E2F_OPT_FIXES_ONLY)) {
1036                 com_err(ctx->program_name, 0, "%s",
1037                         _("The -D and -E fixes_only options are incompatible."));
1038                 fatal_error(ctx, 0);
1039         }
1040         if ((ctx->options & E2F_OPT_CONVERT_BMAP) &&
1041             (ctx->options & E2F_OPT_FIXES_ONLY)) {
1042                 com_err(ctx->program_name, 0, "%s",
1043                         _("The -E bmap2extent and fixes_only options are incompatible."));
1044                 fatal_error(ctx, 0);
1045         }
1046
1047         if ((cp = getenv("E2FSCK_CONFIG")) != NULL)
1048                 config_fn[0] = cp;
1049         profile_set_syntax_err_cb(syntax_err_report);
1050         profile_init(config_fn, &ctx->profile);
1051
1052         profile_get_boolean(ctx->profile, "options", "report_time", 0, 0,
1053                             &c);
1054         if (c)
1055                 ctx->options |= E2F_OPT_TIME | E2F_OPT_TIME2;
1056         profile_get_boolean(ctx->profile, "options", "report_verbose", 0, 0,
1057                             &c);
1058         if (c)
1059                 verbose = 1;
1060
1061         profile_get_boolean(ctx->profile, "options", "no_optimize_extents",
1062                             0, 0, &c);
1063         if (c)
1064                 ctx->options |= E2F_OPT_NOOPT_EXTENTS;
1065
1066         profile_get_boolean(ctx->profile, "options", "inode_count_fullmap",
1067                             0, 0, &c);
1068         if (c)
1069                 ctx->options |= E2F_OPT_ICOUNT_FULLMAP;
1070
1071         if (ctx->readahead_kb == ~0ULL) {
1072                 profile_get_integer(ctx->profile, "options",
1073                                     "readahead_mem_pct", 0, -1, &c);
1074                 if (c >= 0 && c <= 100)
1075                         ctx->readahead_kb = phys_mem_kb * c / 100;
1076                 profile_get_integer(ctx->profile, "options",
1077                                     "readahead_kb", 0, -1, &c);
1078                 if (c >= 0)
1079                         ctx->readahead_kb = c;
1080                 if (ctx->readahead_kb != ~0ULL &&
1081                     ctx->readahead_kb > phys_mem_kb)
1082                         ctx->readahead_kb = phys_mem_kb;
1083         }
1084
1085         /* Turn off discard in read-only mode */
1086         if ((ctx->options & E2F_OPT_NO) &&
1087             (ctx->options & E2F_OPT_DISCARD))
1088                 ctx->options &= ~E2F_OPT_DISCARD;
1089
1090         if (flush) {
1091                 fd = open(ctx->filesystem_name, O_RDONLY, 0);
1092                 if (fd < 0) {
1093                         com_err("open", errno,
1094                                 _("while opening %s for flushing"),
1095                                 ctx->filesystem_name);
1096                         fatal_error(ctx, 0);
1097                 }
1098                 if ((retval = ext2fs_sync_device(fd, 1))) {
1099                         com_err("ext2fs_sync_device", retval,
1100                                 _("while trying to flush %s"),
1101                                 ctx->filesystem_name);
1102                         fatal_error(ctx, 0);
1103                 }
1104                 close(fd);
1105         }
1106         if (cflag && bad_blocks_file) {
1107                 fprintf(stderr, "%s", _("The -c and the -l/-L options may not "
1108                                         "be both used at the same time.\n"));
1109                 exit(FSCK_USAGE);
1110         }
1111 #ifdef HAVE_SIGNAL_H
1112         /*
1113          * Set up signal action
1114          */
1115         memset(&sa, 0, sizeof(struct sigaction));
1116         sa.sa_handler = signal_cancel;
1117         sigaction(SIGINT, &sa, 0);
1118         sigaction(SIGTERM, &sa, 0);
1119 #ifdef SA_RESTART
1120         sa.sa_flags = SA_RESTART;
1121 #endif
1122         sa.sa_handler = signal_progress_on;
1123         sigaction(SIGUSR1, &sa, 0);
1124         sa.sa_handler = signal_progress_off;
1125         sigaction(SIGUSR2, &sa, 0);
1126 #endif
1127
1128         /* Update our PATH to include /sbin if we need to run badblocks  */
1129         if (cflag) {
1130                 char *oldpath = getenv("PATH");
1131                 char *newpath;
1132                 int len = sizeof(PATH_SET) + 1;
1133
1134                 if (oldpath)
1135                         len += strlen(oldpath);
1136
1137                 newpath = malloc(len);
1138                 if (!newpath)
1139                         fatal_error(ctx, "Couldn't malloc() newpath");
1140                 strcpy(newpath, PATH_SET);
1141
1142                 if (oldpath) {
1143                         strcat(newpath, ":");
1144                         strcat(newpath, oldpath);
1145                 }
1146                 putenv(newpath);
1147         }
1148 #ifdef CONFIG_JBD_DEBUG
1149         jbd_debug = getenv("E2FSCK_JBD_DEBUG");
1150         if (jbd_debug) {
1151                 res = sscanf(jbd_debug, "%d", &journal_enable_debug);
1152                 if (res != 1) {
1153                         fprintf(stderr,
1154                                 _("E2FSCK_JBD_DEBUG \"%s\" not an integer\n\n"),
1155                                 jbd_debug);
1156                         exit (1);
1157                 }
1158         }
1159 #endif
1160         return 0;
1161
1162 sscanf_err:
1163         fprintf(stderr, _("\nInvalid non-numeric argument to -%c (\"%s\")\n\n"),
1164                 c, optarg);
1165         exit (1);
1166 }
1167
1168 static errcode_t try_open_fs(e2fsck_t ctx, int flags, io_manager io_ptr,
1169                              ext2_filsys *ret_fs)
1170 {
1171         errcode_t retval;
1172
1173         *ret_fs = NULL;
1174
1175         if (ctx->superblock) {
1176                 unsigned long blocksize = ctx->blocksize;
1177
1178                 if (!blocksize) {
1179                         for (blocksize = EXT2_MIN_BLOCK_SIZE;
1180                              blocksize <= EXT2_MAX_BLOCK_SIZE; blocksize *= 2) {
1181
1182                                 retval = ext2fs_open2(ctx->filesystem_name,
1183                                                       ctx->io_options, flags,
1184                                                       ctx->superblock, blocksize,
1185                                                       unix_io_manager, ret_fs);
1186                                 if (*ret_fs) {
1187                                         ext2fs_free(*ret_fs);
1188                                         *ret_fs = NULL;
1189                                 }
1190                                 if (!retval)
1191                                         break;
1192                         }
1193                         if (retval)
1194                                 return retval;
1195                 }
1196
1197                 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
1198                                       flags, ctx->superblock, blocksize,
1199                                       io_ptr, ret_fs);
1200         } else
1201                 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
1202                                       flags, 0, 0, io_ptr, ret_fs);
1203
1204         if (retval == 0) {
1205                 (*ret_fs)->priv_data = ctx;
1206                 e2fsck_set_bitmap_type(*ret_fs, EXT2FS_BMAP64_RBTREE,
1207                                        "default", NULL);
1208         }
1209         return retval;
1210 }
1211
1212 static const char *my_ver_string = E2FSPROGS_VERSION;
1213 static const char *my_ver_date = E2FSPROGS_DATE;
1214
1215 static errcode_t e2fsck_check_mmp(ext2_filsys fs, e2fsck_t ctx)
1216 {
1217         struct mmp_struct *mmp_s;
1218         unsigned int mmp_check_interval;
1219         errcode_t retval = 0;
1220         struct problem_context pctx;
1221         unsigned int wait_time = 0;
1222
1223         clear_problem_context(&pctx);
1224         if (fs->mmp_buf == NULL) {
1225                 retval = ext2fs_get_mem(fs->blocksize, &fs->mmp_buf);
1226                 if (retval)
1227                         goto check_error;
1228         }
1229
1230         retval = ext2fs_mmp_read(fs, fs->super->s_mmp_block, fs->mmp_buf);
1231         if (retval)
1232                 goto check_error;
1233
1234         mmp_s = fs->mmp_buf;
1235
1236         mmp_check_interval = fs->super->s_mmp_update_interval;
1237         if (mmp_check_interval < EXT4_MMP_MIN_CHECK_INTERVAL)
1238                 mmp_check_interval = EXT4_MMP_MIN_CHECK_INTERVAL;
1239
1240         /*
1241          * If check_interval in MMP block is larger, use that instead of
1242          * check_interval from the superblock.
1243          */
1244         if (mmp_s->mmp_check_interval > mmp_check_interval)
1245                 mmp_check_interval = mmp_s->mmp_check_interval;
1246
1247         wait_time = mmp_check_interval * 2 + 1;
1248
1249         if (mmp_s->mmp_seq == EXT4_MMP_SEQ_CLEAN)
1250                 retval = 0;
1251         else if (mmp_s->mmp_seq == EXT4_MMP_SEQ_FSCK)
1252                 retval = EXT2_ET_MMP_FSCK_ON;
1253         else if (mmp_s->mmp_seq > EXT4_MMP_SEQ_MAX)
1254                 retval = EXT2_ET_MMP_UNKNOWN_SEQ;
1255
1256         if (retval)
1257                 goto check_error;
1258
1259         /* Print warning if e2fsck will wait for more than 20 secs. */
1260         if (verbose || wait_time > EXT4_MMP_MIN_CHECK_INTERVAL * 4) {
1261                 log_out(ctx, _("MMP interval is %u seconds and total wait "
1262                                "time is %u seconds. Please wait...\n"),
1263                         mmp_check_interval, wait_time * 2);
1264         }
1265
1266         return 0;
1267
1268 check_error:
1269
1270         if (retval == EXT2_ET_MMP_BAD_BLOCK) {
1271                 if (fix_problem(ctx, PR_0_MMP_INVALID_BLK, &pctx)) {
1272                         fs->super->s_mmp_block = 0;
1273                         ext2fs_mark_super_dirty(fs);
1274                         retval = 0;
1275                 }
1276         } else if (retval == EXT2_ET_MMP_FAILED) {
1277                 com_err(ctx->program_name, retval, "%s",
1278                         _("while checking MMP block"));
1279                 dump_mmp_msg(fs->mmp_buf, NULL);
1280         } else if (retval == EXT2_ET_MMP_FSCK_ON ||
1281                    retval == EXT2_ET_MMP_UNKNOWN_SEQ) {
1282                 com_err(ctx->program_name, retval, "%s",
1283                         _("while checking MMP block"));
1284                 dump_mmp_msg(fs->mmp_buf,
1285                              _("If you are sure the filesystem is not "
1286                                "in use on any node, run:\n"
1287                                "'tune2fs -f -E clear_mmp %s'\n"),
1288                              ctx->device_name);
1289         } else if (retval == EXT2_ET_MMP_MAGIC_INVALID) {
1290                 if (fix_problem(ctx, PR_0_MMP_INVALID_MAGIC, &pctx)) {
1291                         ext2fs_mmp_clear(fs);
1292                         retval = 0;
1293                 }
1294         } else if (retval == EXT2_ET_MMP_CSUM_INVALID) {
1295                 if (fix_problem(ctx, PR_0_MMP_CSUM_INVALID, &pctx)) {
1296                         ext2fs_mmp_clear(fs);
1297                         retval = 0;
1298                 }
1299         } else
1300                 com_err(ctx->program_name, retval, "%s",
1301                         _("while reading MMP block"));
1302         return retval;
1303 }
1304
1305 static int e2fsck_setup_tdb(e2fsck_t ctx, io_manager *io_ptr)
1306 {
1307         errcode_t retval = ENOMEM;
1308         char *tdb_dir = NULL, *tdb_file = NULL;
1309         char *dev_name, *tmp_name;
1310         int free_tdb_dir = 0;
1311
1312         /* (re)open a specific undo file */
1313         if (ctx->undo_file && ctx->undo_file[0] != 0) {
1314                 retval = set_undo_io_backing_manager(*io_ptr);
1315                 if (retval)
1316                         goto err;
1317                 *io_ptr = undo_io_manager;
1318                 retval = set_undo_io_backup_file(ctx->undo_file);
1319                 if (retval)
1320                         goto err;
1321                 printf(_("Overwriting existing filesystem; this can be undone "
1322                          "using the command:\n"
1323                          "    e2undo %s %s\n\n"),
1324                         ctx->undo_file, ctx->filesystem_name);
1325                 return retval;
1326         }
1327
1328         /*
1329          * Configuration via a conf file would be
1330          * nice
1331          */
1332         tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
1333         if (!tdb_dir) {
1334                 profile_get_string(ctx->profile, "defaults",
1335                                    "undo_dir", 0, "/var/lib/e2fsprogs",
1336                                    &tdb_dir);
1337                 free_tdb_dir = 1;
1338         }
1339
1340         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
1341             access(tdb_dir, W_OK)) {
1342                 if (free_tdb_dir)
1343                         free(tdb_dir);
1344                 return 0;
1345         }
1346
1347         tmp_name = strdup(ctx->filesystem_name);
1348         if (!tmp_name)
1349                 goto errout;
1350         dev_name = basename(tmp_name);
1351         tdb_file = malloc(strlen(tdb_dir) + 8 + strlen(dev_name) + 7 + 1);
1352         if (!tdb_file) {
1353                 free(tmp_name);
1354                 goto errout;
1355         }
1356         sprintf(tdb_file, "%s/e2fsck-%s.e2undo", tdb_dir, dev_name);
1357         free(tmp_name);
1358
1359         if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
1360                 retval = errno;
1361                 com_err(ctx->program_name, retval,
1362                         _("while trying to delete %s"), tdb_file);
1363                 goto errout;
1364         }
1365
1366         retval = set_undo_io_backing_manager(*io_ptr);
1367         if (retval)
1368                 goto errout;
1369         *io_ptr = undo_io_manager;
1370         retval = set_undo_io_backup_file(tdb_file);
1371         if (retval)
1372                 goto errout;
1373         printf(_("Overwriting existing filesystem; this can be undone "
1374                  "using the command:\n"
1375                  "    e2undo %s %s\n\n"), tdb_file, ctx->filesystem_name);
1376
1377         if (free_tdb_dir)
1378                 free(tdb_dir);
1379         free(tdb_file);
1380         return 0;
1381
1382 errout:
1383         if (free_tdb_dir)
1384                 free(tdb_dir);
1385         free(tdb_file);
1386 err:
1387         com_err(ctx->program_name, retval, "%s",
1388                 _("while trying to setup undo file\n"));
1389         return retval;
1390 }
1391
1392 int main (int argc, char *argv[])
1393 {
1394         errcode_t       retval = 0, retval2 = 0, orig_retval = 0;
1395         int             exit_value = FSCK_OK;
1396         ext2_filsys     fs = 0;
1397         io_manager      io_ptr;
1398         struct ext2_super_block *sb;
1399         const char      *lib_ver_date;
1400         int             my_ver, lib_ver;
1401         e2fsck_t        ctx;
1402         blk64_t         orig_superblock = ~(blk64_t)0;
1403         struct problem_context pctx;
1404         int flags, run_result, was_changed;
1405         int journal_size;
1406         int sysval, sys_page_size = 4096;
1407         int old_bitmaps;
1408         __u32 features[3];
1409         char *cp;
1410         enum quota_type qtype;
1411         struct ext2fs_journal_params jparams;
1412
1413         clear_problem_context(&pctx);
1414         sigcatcher_setup();
1415 #ifdef MTRACE
1416         mtrace();
1417 #endif
1418 #ifdef MCHECK
1419         mcheck(0);
1420 #endif
1421 #ifdef ENABLE_NLS
1422         setlocale(LC_MESSAGES, "");
1423         setlocale(LC_CTYPE, "");
1424         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1425         textdomain(NLS_CAT_NAME);
1426         set_com_err_gettext(gettext);
1427 #endif
1428         my_ver = ext2fs_parse_version_string(my_ver_string);
1429         lib_ver = ext2fs_get_library_version(0, &lib_ver_date);
1430         if (my_ver > lib_ver) {
1431                 fprintf( stderr, "%s",
1432                          _("Error: ext2fs library version out of date!\n"));
1433                 show_version_only++;
1434         }
1435
1436         retval = PRS(argc, argv, &ctx);
1437         if (retval) {
1438                 com_err("e2fsck", retval, "%s",
1439                         _("while trying to initialize program"));
1440                 exit(FSCK_ERROR);
1441         }
1442         reserve_stdio_fds();
1443
1444         set_up_logging(ctx);
1445         if (ctx->logf) {
1446                 int i;
1447
1448                 fputs("E2fsck run: ", ctx->logf);
1449                 for (i = 0; i < argc; i++) {
1450                         if (i)
1451                                 fputc(' ', ctx->logf);
1452                         fputs(argv[i], ctx->logf);
1453                 }
1454                 fputc('\n', ctx->logf);
1455         }
1456         if (ctx->problem_logf) {
1457                 int i;
1458
1459                 fputs("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n",
1460                       ctx->problem_logf);
1461                 fprintf(ctx->problem_logf, "<problem_log time=\"%lu\">\n",
1462                         (unsigned long) ctx->now);
1463                 fprintf(ctx->problem_logf, "<invocation prog=\"%s\"",
1464                         argv[0]);
1465                 for (i = 1; i < argc; i++)
1466                         fprintf(ctx->problem_logf, " arg%d=\"%s\"", i, argv[i]);
1467                 fputs("/>\n", ctx->problem_logf);
1468         }
1469
1470         init_resource_track(&ctx->global_rtrack, NULL);
1471         if (!(ctx->options & E2F_OPT_PREEN) || show_version_only)
1472                 log_err(ctx, "e2fsck %s (%s)\n", my_ver_string,
1473                          my_ver_date);
1474
1475         if (show_version_only) {
1476                 log_err(ctx, _("\tUsing %s, %s\n"),
1477                         error_message(EXT2_ET_BASE), lib_ver_date);
1478                 exit(FSCK_OK);
1479         }
1480
1481         check_mount(ctx);
1482
1483         if (!(ctx->options & E2F_OPT_PREEN) &&
1484             !(ctx->options & E2F_OPT_NO) &&
1485             !(ctx->options & E2F_OPT_YES)) {
1486                 if (!ctx->interactive)
1487                         fatal_error(ctx,
1488                                     _("need terminal for interactive repairs"));
1489         }
1490         ctx->superblock = ctx->use_superblock;
1491
1492         flags = EXT2_FLAG_SKIP_MMP | EXT2_FLAG_THREADS;
1493 restart:
1494 #ifdef CONFIG_TESTIO_DEBUG
1495         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1496                 io_ptr = test_io_manager;
1497                 test_io_backing_manager = unix_io_manager;
1498         } else
1499 #endif
1500                 io_ptr = unix_io_manager;
1501         flags |= EXT2_FLAG_NOFREE_ON_ERROR;
1502         profile_get_boolean(ctx->profile, "options", "old_bitmaps", 0, 0,
1503                             &old_bitmaps);
1504         if (!old_bitmaps)
1505                 flags |= EXT2_FLAG_64BITS;
1506         if ((ctx->options & E2F_OPT_READONLY) == 0) {
1507                 flags |= EXT2_FLAG_RW;
1508                 if (!(ctx->mount_flags & EXT2_MF_ISROOT &&
1509                       ctx->mount_flags & EXT2_MF_READONLY))
1510                         flags |= EXT2_FLAG_EXCLUSIVE;
1511                 if ((ctx->mount_flags & EXT2_MF_READONLY) &&
1512                     (ctx->options & E2F_OPT_FORCE))
1513                         flags &= ~EXT2_FLAG_EXCLUSIVE;
1514         }
1515
1516         if (ctx->undo_file) {
1517                 retval = e2fsck_setup_tdb(ctx, &io_ptr);
1518                 if (retval)
1519                         exit(FSCK_ERROR);
1520         }
1521
1522         ctx->openfs_flags = flags;
1523         retval = try_open_fs(ctx, flags, io_ptr, &fs);
1524
1525         if (!ctx->superblock && !(ctx->options & E2F_OPT_PREEN) &&
1526             !(ctx->flags & E2F_FLAG_SB_SPECIFIED) &&
1527             ((retval == EXT2_ET_BAD_MAGIC) ||
1528              (retval == EXT2_ET_SB_CSUM_INVALID) ||
1529              (retval == EXT2_ET_CORRUPT_SUPERBLOCK) ||
1530              ((retval == 0) && (retval2 = ext2fs_check_desc(fs))))) {
1531                 if (retval) {
1532                         pctx.errcode = retval;
1533                         fix_problem(ctx, PR_0_OPEN_FAILED, &pctx);
1534                 }
1535                 if (retval2) {
1536                         pctx.errcode = retval2;
1537                         fix_problem(ctx, PR_0_CHECK_DESC_FAILED, &pctx);
1538                 }
1539                 pctx.errcode = 0;
1540                 if (retval2 == ENOMEM || retval2 == EXT2_ET_NO_MEMORY) {
1541                         retval = retval2;
1542                         goto failure;
1543                 }
1544                 if (fs->flags & EXT2_FLAG_NOFREE_ON_ERROR) {
1545                         ext2fs_free(fs);
1546                         fs = NULL;
1547                 }
1548                 if (!fs || (fs->group_desc_count > 1)) {
1549                         log_out(ctx, _("%s: %s trying backup blocks...\n"),
1550                                 ctx->program_name,
1551                                 retval ? _("Superblock invalid,") :
1552                                 _("Group descriptors look bad..."));
1553                         orig_superblock = ctx->superblock;
1554                         get_backup_sb(ctx, fs, ctx->filesystem_name, io_ptr);
1555                         if (fs)
1556                                 ext2fs_close_free(&fs);
1557                         orig_retval = retval;
1558                         retval = try_open_fs(ctx, flags, io_ptr, &fs);
1559                         if ((orig_retval == 0) && retval != 0) {
1560                                 if (fs)
1561                                         ext2fs_close_free(&fs);
1562                                 log_out(ctx, _("%s: %s while using the "
1563                                                "backup blocks"),
1564                                         ctx->program_name,
1565                                         error_message(retval));
1566                                 log_out(ctx, _("%s: going back to original "
1567                                                "superblock\n"),
1568                                         ctx->program_name);
1569                                 ctx->superblock = orig_superblock;
1570                                 retval = try_open_fs(ctx, flags, io_ptr, &fs);
1571                         }
1572                 }
1573         }
1574         if (((retval == EXT2_ET_UNSUPP_FEATURE) ||
1575              (retval == EXT2_ET_RO_UNSUPP_FEATURE)) &&
1576             fs && fs->super) {
1577                 sb = fs->super;
1578                 features[0] = (sb->s_feature_compat &
1579                                ~EXT2_LIB_FEATURE_COMPAT_SUPP);
1580                 features[1] = (sb->s_feature_incompat &
1581                                ~EXT2_LIB_FEATURE_INCOMPAT_SUPP);
1582                 features[2] = (sb->s_feature_ro_compat &
1583                                ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
1584                 if (features[0] || features[1] || features[2])
1585                         goto print_unsupp_features;
1586         }
1587 failure:
1588         if (retval) {
1589                 if (orig_retval)
1590                         retval = orig_retval;
1591                 com_err(ctx->program_name, retval, _("while trying to open %s"),
1592                         ctx->filesystem_name);
1593                 if (retval == EXT2_ET_REV_TOO_HIGH) {
1594                         log_out(ctx, "%s",
1595                                 _("The filesystem revision is apparently "
1596                                   "too high for this version of e2fsck.\n"
1597                                   "(Or the filesystem superblock "
1598                                   "is corrupt)\n\n"));
1599                         fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
1600                 } else if (retval == EXT2_ET_SHORT_READ)
1601                         log_out(ctx, "%s",
1602                                 _("Could this be a zero-length partition?\n"));
1603                 else if ((retval == EPERM) || (retval == EACCES))
1604                         log_out(ctx, _("You must have %s access to the "
1605                                        "filesystem or be root\n"),
1606                                (ctx->options & E2F_OPT_READONLY) ?
1607                                "r/o" : "r/w");
1608                 else if (retval == ENXIO)
1609                         log_out(ctx, "%s",
1610                                 _("Possibly non-existent or swap device?\n"));
1611                 else if (retval == EBUSY)
1612                         log_out(ctx, "%s", _("Filesystem mounted or opened "
1613                                          "exclusively by another program?\n"));
1614                 else if (retval == ENOENT)
1615                         log_out(ctx, "%s",
1616                                 _("Possibly non-existent device?\n"));
1617 #ifdef EROFS
1618                 else if (retval == EROFS)
1619                         log_out(ctx, "%s", _("Disk write-protected; use the "
1620                                              "-n option to do a read-only\n"
1621                                              "check of the device.\n"));
1622 #endif
1623                 else {
1624                         /*
1625                          * Let's try once more will less consistency checking
1626                          * so that we are able to recover from more errors
1627                          * (e.g. some tool messing up some value in the sb).
1628                          */
1629                         if (((retval == EXT2_ET_CORRUPT_SUPERBLOCK) ||
1630                              (retval == EXT2_ET_BAD_DESC_SIZE)) &&
1631                             !(flags & EXT2_FLAG_IGNORE_SB_ERRORS)) {
1632                                 if (fs)
1633                                         ext2fs_close_free(&fs);
1634                                 log_out(ctx, _("%s: Trying to load superblock "
1635                                         "despite errors...\n"),
1636                                         ctx->program_name);
1637                                 flags |= EXT2_FLAG_IGNORE_SB_ERRORS;
1638                                 /*
1639                                  * If we tried backup sb, revert to the
1640                                  * original one now.
1641                                  */
1642                                 if (orig_superblock != ~(blk64_t)0)
1643                                         ctx->superblock = orig_superblock;
1644                                 goto restart;
1645                         }
1646                         fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
1647                         if (retval == EXT2_ET_BAD_MAGIC)
1648                                 check_plausibility(ctx->filesystem_name,
1649                                                    CHECK_FS_EXIST, NULL);
1650                 }
1651                 fatal_error(ctx, 0);
1652         }
1653         /*
1654          * We only update the master superblock because (a) paranoia;
1655          * we don't want to corrupt the backup superblocks, and (b) we
1656          * don't need to update the mount count and last checked
1657          * fields in the backup superblock (the kernel doesn't update
1658          * the backup superblocks anyway).  With newer versions of the
1659          * library this flag is set by ext2fs_open2(), but we set this
1660          * here just to be sure.  (No, we don't support e2fsck running
1661          * with some other libext2fs than the one that it was shipped
1662          * with, but just in case....)
1663          */
1664         fs->flags |= EXT2_FLAG_MASTER_SB_ONLY;
1665
1666         if (!(ctx->flags & E2F_FLAG_GOT_DEVSIZE)) {
1667                 __u32 blocksize = EXT2_BLOCK_SIZE(fs->super);
1668                 int need_restart = 0;
1669
1670                 pctx.errcode = ext2fs_get_device_size2(ctx->filesystem_name,
1671                                                        blocksize,
1672                                                        &ctx->num_blocks);
1673                 /*
1674                  * The floppy driver refuses to allow anyone else to
1675                  * open the device if has been opened with O_EXCL;
1676                  * this is unlike other block device drivers in Linux.
1677                  * To handle this, we close the filesystem and then
1678                  * reopen the filesystem after we get the device size.
1679                  */
1680                 if (pctx.errcode == EBUSY) {
1681                         ext2fs_close_free(&fs);
1682                         need_restart++;
1683                         pctx.errcode =
1684                                 ext2fs_get_device_size2(ctx->filesystem_name,
1685                                                         blocksize,
1686                                                         &ctx->num_blocks);
1687                 }
1688                 if (pctx.errcode == EXT2_ET_UNIMPLEMENTED)
1689                         ctx->num_blocks = 0;
1690                 else if (pctx.errcode) {
1691                         fix_problem(ctx, PR_0_GETSIZE_ERROR, &pctx);
1692                         ctx->flags |= E2F_FLAG_ABORT;
1693                         fatal_error(ctx, 0);
1694                 }
1695                 ctx->flags |= E2F_FLAG_GOT_DEVSIZE;
1696                 if (need_restart)
1697                         goto restart;
1698         }
1699
1700         ctx->fs = fs;
1701         fs->now = ctx->now;
1702         sb = fs->super;
1703
1704         if (sb->s_rev_level > E2FSCK_CURRENT_REV) {
1705                 com_err(ctx->program_name, EXT2_ET_REV_TOO_HIGH,
1706                         _("while trying to open %s"),
1707                         ctx->filesystem_name);
1708         get_newer:
1709                 fatal_error(ctx, _("Get a newer version of e2fsck!"));
1710         }
1711
1712         /*
1713          * Set the device name, which is used whenever we print error
1714          * or informational messages to the user.
1715          */
1716         if (ctx->device_name == 0 && sb->s_volume_name[0])
1717                 ctx->device_name = string_copy(ctx, (char *) sb->s_volume_name,
1718                                                sizeof(sb->s_volume_name));
1719
1720         if (ctx->device_name == 0)
1721                 ctx->device_name = string_copy(ctx, ctx->filesystem_name, 0);
1722         for (cp = ctx->device_name; *cp; cp++)
1723                 if (isspace(*cp) || *cp == ':')
1724                         *cp = '_';
1725
1726         if (ctx->problem_logf) {
1727
1728                 fprintf(ctx->problem_logf, "<filesystem dev=\"%s\"",
1729                         ctx->filesystem_name);
1730                 if (!uuid_is_null(sb->s_uuid)) {
1731                         char buf[48];
1732
1733                         uuid_unparse(sb->s_uuid, buf);
1734                         fprintf(ctx->problem_logf, " uuid=\"%s\"", buf);
1735                 }
1736                 if (sb->s_volume_name[0])
1737                         fprintf(ctx->problem_logf, " label=\"%.*s\"",
1738                                 EXT2_LEN_STR(sb->s_volume_name));
1739
1740                 fputs("/>\n", ctx->problem_logf);
1741         }
1742
1743         ehandler_init(fs->io);
1744
1745         if (ext2fs_has_feature_mmp(fs->super) &&
1746             (flags & EXT2_FLAG_SKIP_MMP)) {
1747                 if (e2fsck_check_mmp(fs, ctx))
1748                         fatal_error(ctx, 0);
1749
1750                 /*
1751                  * Restart in order to reopen fs but this time start mmp.
1752                  */
1753                 ext2fs_close_free(&ctx->fs);
1754                 flags &= ~EXT2_FLAG_SKIP_MMP;
1755                 goto restart;
1756         }
1757
1758         if (ctx->logf)
1759                 fprintf(ctx->logf, "Filesystem UUID: %s\n",
1760                         e2p_uuid2str(sb->s_uuid));
1761
1762         /*
1763          * Make sure the ext3 superblock fields are consistent.
1764          */
1765         if ((ctx->mount_flags & (EXT2_MF_MOUNTED | EXT2_MF_BUSY)) == 0) {
1766                 retval = e2fsck_check_ext3_journal(ctx);
1767                 if (retval) {
1768                         com_err(ctx->program_name, retval,
1769                                 _("while checking journal for %s"),
1770                                 ctx->device_name);
1771                         fatal_error(ctx,
1772                                 _("Cannot proceed with file system check"));
1773                 }
1774         }
1775
1776         /*
1777          * Check to see if we need to do ext3-style recovery.  If so,
1778          * do it, and then restart the fsck.
1779          */
1780         if (ext2fs_has_feature_journal_needs_recovery(sb)) {
1781                 if (ctx->options & E2F_OPT_READONLY) {
1782                         log_out(ctx, "%s",
1783                                 _("Warning: skipping journal recovery because "
1784                                   "doing a read-only filesystem check.\n"));
1785                         io_channel_flush(ctx->fs->io);
1786                 } else {
1787                         if (ctx->flags & E2F_FLAG_RESTARTED) {
1788                                 /*
1789                                  * Whoops, we attempted to run the
1790                                  * journal twice.  This should never
1791                                  * happen, unless the hardware or
1792                                  * device driver is being bogus.
1793                                  */
1794                                 com_err(ctx->program_name, 0,
1795                                         _("unable to set superblock flags "
1796                                           "on %s\n"), ctx->device_name);
1797                                 fatal_error(ctx, 0);
1798                         }
1799                         retval = e2fsck_run_ext3_journal(ctx);
1800                         if (retval == EFSBADCRC) {
1801                                 log_out(ctx, _("Journal checksum error "
1802                                                "found in %s\n"),
1803                                         ctx->device_name);
1804                         } else if (retval == EFSCORRUPTED) {
1805                                 log_out(ctx, _("Journal corrupted in %s\n"),
1806                                         ctx->device_name);
1807                         } else if (retval) {
1808                                 com_err(ctx->program_name, retval,
1809                                 _("while recovering journal of %s"),
1810                                         ctx->device_name);
1811                         }
1812                         ext2fs_close_free(&ctx->fs);
1813                         ctx->flags |= E2F_FLAG_RESTARTED;
1814                         goto restart;
1815                 }
1816         }
1817
1818         /*
1819          * Check for compatibility with the feature sets.  We need to
1820          * be more stringent than ext2fs_open().
1821          */
1822         features[0] = sb->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP;
1823         features[1] = sb->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP;
1824         features[2] = (sb->s_feature_ro_compat &
1825                        ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
1826 print_unsupp_features:
1827         if (features[0] || features[1] || features[2]) {
1828                 int     i, j;
1829                 __u32   *mask = features, m;
1830
1831                 log_err(ctx, _("%s has unsupported feature(s):"),
1832                         ctx->filesystem_name);
1833
1834                 for (i=0; i <3; i++,mask++) {
1835                         for (j=0,m=1; j < 32; j++, m<<=1) {
1836                                 if (*mask & m)
1837                                         log_err(ctx, " %s",
1838                                                 e2p_feature2string(i, m));
1839                         }
1840                 }
1841                 log_err(ctx, "\n");
1842                 goto get_newer;
1843         }
1844
1845         if (ext2fs_has_feature_casefold(sb) && !fs->encoding) {
1846                 log_err(ctx, _("%s has unsupported encoding: %0x\n"),
1847                         ctx->filesystem_name, sb->s_encoding);
1848                 goto get_newer;
1849         }
1850
1851         /*
1852          * If the user specified a specific superblock, presumably the
1853          * master superblock has been trashed.  So we mark the
1854          * superblock as dirty, so it can be written out.
1855          */
1856         if (ctx->superblock &&
1857             !(ctx->options & E2F_OPT_READONLY))
1858                 ext2fs_mark_super_dirty(fs);
1859
1860         /*
1861          * Calculate the number of filesystem blocks per pagesize.  If
1862          * fs->blocksize > page_size, set the number of blocks per
1863          * pagesize to 1 to avoid division by zero errors.
1864          */
1865 #ifdef _SC_PAGESIZE
1866         sysval = sysconf(_SC_PAGESIZE);
1867         if (sysval > 0)
1868                 sys_page_size = sysval;
1869 #endif /* _SC_PAGESIZE */
1870         ctx->blocks_per_page = sys_page_size / fs->blocksize;
1871         if (ctx->blocks_per_page == 0)
1872                 ctx->blocks_per_page = 1;
1873
1874         if (ctx->superblock)
1875                 set_latch_flags(PR_LATCH_RELOC, PRL_LATCHED, 0);
1876         ext2fs_mark_valid(fs);
1877         check_super_block(ctx);
1878         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1879                 fatal_error(ctx, 0);
1880         check_if_skip(ctx);
1881         check_resize_inode(ctx);
1882         if (bad_blocks_file)
1883                 read_bad_blocks_file(ctx, bad_blocks_file, replace_bad_blocks);
1884         else if (cflag)
1885                 read_bad_blocks_file(ctx, 0, !keep_bad_blocks); /* Test disk */
1886         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1887                 fatal_error(ctx, 0);
1888
1889         /*
1890          * Mark the system as valid, 'til proven otherwise
1891          */
1892         ext2fs_mark_valid(fs);
1893
1894         retval = ext2fs_read_bb_inode(fs, &fs->badblocks);
1895         if (retval) {
1896                 log_out(ctx, _("%s: %s while reading bad blocks inode\n"),
1897                         ctx->program_name, error_message(retval));
1898                 preenhalt(ctx);
1899                 log_out(ctx, "%s", _("This doesn't bode well, "
1900                                      "but we'll try to go on...\n"));
1901         }
1902
1903         /*
1904          * Save the journal size in megabytes.
1905          * Try and use the journal size from the backup else let e2fsck
1906          * find the default journal size. If fast commit feature is enabled,
1907          * it is not clear how many of the journal blocks were fast commit
1908          * blocks. So, ignore the size of journal found in backup.
1909          *
1910          * TODO: Add a new backup type that captures fast commit info as
1911          * well.
1912          */
1913         if (sb->s_jnl_backup_type == EXT3_JNL_BACKUP_BLOCKS &&
1914                 !ext2fs_has_feature_fast_commit(sb))
1915                 journal_size = (sb->s_jnl_blocks[15] << (32 - 20)) |
1916                                (sb->s_jnl_blocks[16] >> 20);
1917         else
1918                 journal_size = -1;
1919
1920         if (ext2fs_has_feature_quota(sb)) {
1921                 /* Quotas were enabled. Do quota accounting during fsck. */
1922                 clear_problem_context(&pctx);
1923                 pctx.errcode = quota_init_context(&ctx->qctx, ctx->fs, 0);
1924                 if (pctx.errcode) {
1925                         fix_problem(ctx, PR_0_QUOTA_INIT_CTX, &pctx);
1926                         fatal_error(ctx, 0);
1927                 }
1928         }
1929
1930         run_result = e2fsck_run(ctx);
1931         e2fsck_clear_progbar(ctx);
1932
1933         if (!ctx->invalid_bitmaps &&
1934             (ctx->flags & E2F_FLAG_JOURNAL_INODE)) {
1935                 if (fix_problem(ctx, PR_6_RECREATE_JOURNAL, &pctx)) {
1936                         if (journal_size < 1024) {
1937                                 ext2fs_get_journal_params(&jparams, fs);
1938                         } else {
1939                                 jparams.num_journal_blocks = journal_size;
1940                                 jparams.num_fc_blocks = 0;
1941                         }
1942                         log_out(ctx, _("Creating journal (%d blocks): "),
1943                                jparams.num_journal_blocks);
1944                         fflush(stdout);
1945                         retval = ext2fs_add_journal_inode3(fs, &jparams, ~0ULL, 0);
1946                         if (retval) {
1947                                 log_out(ctx, "%s: while trying to create "
1948                                         "journal\n", error_message(retval));
1949                                 goto no_journal;
1950                         }
1951                         log_out(ctx, "%s", _(" Done.\n"));
1952                         log_out(ctx, "%s",
1953                                 _("\n*** journal has been regenerated ***\n"));
1954                 }
1955         }
1956 no_journal:
1957
1958         if (run_result & E2F_FLAG_ABORT) {
1959                 fatal_error(ctx, _("aborted"));
1960         } else if (run_result & E2F_FLAG_CANCEL) {
1961                 log_out(ctx, _("%s: e2fsck canceled.\n"), ctx->device_name ?
1962                         ctx->device_name : ctx->filesystem_name);
1963                 exit_value |= FSCK_CANCELED;
1964         } else if (ctx->qctx && !ctx->invalid_bitmaps) {
1965                 int needs_writeout;
1966
1967                 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1968                         if (*quota_sb_inump(sb, qtype) == 0)
1969                                 continue;
1970                         needs_writeout = 0;
1971                         pctx.num = qtype;
1972                         retval = quota_compare_and_update(ctx->qctx, qtype,
1973                                                           &needs_writeout);
1974                         if ((retval || needs_writeout) &&
1975                             fix_problem(ctx, PR_6_UPDATE_QUOTAS, &pctx)) {
1976                                 pctx.errcode = quota_write_inode(ctx->qctx,
1977                                                                  1 << qtype);
1978                                 if (pctx.errcode)
1979                                         (void) fix_problem(ctx,
1980                                                 PR_6_WRITE_QUOTAS, &pctx);
1981                         }
1982                 }
1983                 quota_release_context(&ctx->qctx);
1984         }
1985
1986         if (run_result == E2F_FLAG_RESTART) {
1987                 log_out(ctx, "%s",
1988                         _("Restarting e2fsck from the beginning...\n"));
1989                 retval = e2fsck_reset_context(ctx);
1990                 if (retval) {
1991                         com_err(ctx->program_name, retval, "%s",
1992                                 _("while resetting context"));
1993                         fatal_error(ctx, 0);
1994                 }
1995                 ext2fs_close_free(&ctx->fs);
1996                 goto restart;
1997         }
1998
1999 #ifdef MTRACE
2000         mtrace_print("Cleanup");
2001 #endif
2002         was_changed = ext2fs_test_changed(fs);
2003         if (!(ctx->flags & E2F_FLAG_RUN_RETURN) &&
2004             !(ctx->options & E2F_OPT_READONLY)) {
2005                 if (ext2fs_test_valid(fs)) {
2006                         if (!(sb->s_state & EXT2_VALID_FS))
2007                                 exit_value |= FSCK_NONDESTRUCT;
2008                         sb->s_state = EXT2_VALID_FS;
2009                         if (check_backup_super_block(ctx))
2010                                 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
2011                 } else
2012                         sb->s_state &= ~EXT2_VALID_FS;
2013                 if (!(ctx->flags & E2F_FLAG_TIME_INSANE))
2014                         sb->s_lastcheck = ctx->now;
2015                 sb->s_mnt_count = 0;
2016                 memset(((char *) sb) + EXT4_S_ERR_START, 0, EXT4_S_ERR_LEN);
2017                 pctx.errcode = ext2fs_set_gdt_csum(ctx->fs);
2018                 if (pctx.errcode)
2019                         fix_problem(ctx, PR_6_SET_BG_CHECKSUM, &pctx);
2020                 ext2fs_mark_super_dirty(fs);
2021         }
2022
2023         if (ext2fs_has_feature_shared_blocks(ctx->fs->super) &&
2024             (ctx->options & E2F_OPT_UNSHARE_BLOCKS) &&
2025             (ctx->options & E2F_OPT_NO))
2026                 /* Don't try to write or flush I/O, we just wanted to know whether or
2027                  * not there were enough free blocks to undo deduplication.
2028                  */
2029                 goto skip_write;
2030
2031         if (!(ctx->options & E2F_OPT_READONLY)) {
2032                 e2fsck_write_bitmaps(ctx);
2033                 if (fs->flags & EXT2_FLAG_DIRTY) {
2034                         pctx.errcode = ext2fs_flush(ctx->fs);
2035                         if (pctx.errcode)
2036                                 fix_problem(ctx, PR_6_FLUSH_FILESYSTEM, &pctx);
2037                 }
2038                 pctx.errcode = io_channel_flush(ctx->fs->io);
2039                 if (pctx.errcode)
2040                         fix_problem(ctx, PR_6_IO_FLUSH, &pctx);
2041         }
2042
2043         if (was_changed) {
2044                 int fs_fixed = (ctx->flags & E2F_FLAG_PROBLEMS_FIXED);
2045
2046                 if (fs_fixed)
2047                         exit_value |= FSCK_NONDESTRUCT;
2048                 if (!(ctx->options & E2F_OPT_PREEN)) {
2049 #if 0   /* Do this later; it breaks too many tests' golden outputs */
2050                         log_out(ctx, fs_fixed ?
2051                                 _("\n%s: ***** FILE SYSTEM ERRORS "
2052                                   "CORRECTED *****\n") :
2053                                 _("%s: File system was modified.\n"),
2054                                 ctx->device_name);
2055 #else
2056                         log_out(ctx,
2057                                 _("\n%s: ***** FILE SYSTEM WAS MODIFIED *****\n"),
2058                                 ctx->device_name);
2059 #endif
2060                 }
2061                 if (ctx->mount_flags & EXT2_MF_ISROOT) {
2062                         log_out(ctx, _("%s: ***** REBOOT SYSTEM *****\n"),
2063                                 ctx->device_name);
2064                         exit_value |= FSCK_REBOOT;
2065                 }
2066         }
2067
2068 skip_write:
2069         if (!ext2fs_test_valid(fs) ||
2070             ((exit_value & FSCK_CANCELED) &&
2071              (sb->s_state & EXT2_ERROR_FS))) {
2072                 log_out(ctx, _("\n%s: ********** WARNING: Filesystem still has "
2073                                "errors **********\n\n"), ctx->device_name);
2074                 exit_value |= FSCK_UNCORRECTED;
2075                 exit_value &= ~FSCK_NONDESTRUCT;
2076         }
2077         if (exit_value & FSCK_CANCELED) {
2078                 int     allow_cancellation;
2079
2080                 profile_get_boolean(ctx->profile, "options",
2081                                     "allow_cancellation", 0, 0,
2082                                     &allow_cancellation);
2083                 exit_value &= ~FSCK_NONDESTRUCT;
2084                 if (allow_cancellation && ext2fs_test_valid(fs) &&
2085                     (sb->s_state & EXT2_VALID_FS) &&
2086                     !(sb->s_state & EXT2_ERROR_FS))
2087                         exit_value = 0;
2088         } else
2089                 show_stats(ctx);
2090
2091         print_resource_track(ctx, NULL, &ctx->global_rtrack, ctx->fs->io);
2092
2093         ext2fs_close_free(&ctx->fs);
2094         free(ctx->journal_name);
2095
2096         if (ctx->logf)
2097                 fprintf(ctx->logf, "Exit status: %d\n", exit_value);
2098         e2fsck_free_context(ctx);
2099         remove_error_table(&et_ext2_error_table);
2100         remove_error_table(&et_prof_error_table);
2101         return exit_value;
2102 }