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
  49 #include "e2p/e2p.h"
  50 #include "et/com_err.h"
  51 #include "e2p/e2p.h"
  52 #include "e2fsck.h"
  53 #include "problem.h"
  54 #include "../version.h"
  55
  56 /* Command line options */
  57 static int cflag;               /* check disk */
  58 static int show_version_only;
  59 static int verbose;
  60
  61 static int replace_bad_blocks;
  62 static int keep_bad_blocks;
  63 static char *bad_blocks_file;
  64
  65 e2fsck_t e2fsck_global_ctx;     /* Try your very best not to use this! */
  66
  67 #ifdef CONFIG_JBD_DEBUG         /* Enabled by configure --enable-jfs-debug */
  68 int journal_enable_debug = -1;
  69 #endif
  70
  71 static void usage(e2fsck_t ctx)
  72 {
  73         fprintf(stderr,
  74                 _("Usage: %s [-panyrcdfvtDFV] [-b superblock] [-B blocksize]\n"
  75                 "\t\t[-I inode_buffer_blocks] [-P process_inode_size]\n"
  76                 "\t\t[-l|-L bad_blocks_file] [-C fd] [-j external_journal]\n"
  77                 "\t\t[-E extended-options] device\n"),
  78                 ctx->program_name);
  79
  80         fprintf(stderr, _("\nEmergency help:\n"
  81                 " -p                   Automatic repair (no questions)\n"
  82                 " -n                   Make no changes to the filesystem\n"
  83                 " -y                   Assume \"yes\" to all questions\n"
  84                 " -c                   Check for bad blocks and add them to the badblock list\n"
  85                 " -f                   Force checking even if filesystem is marked clean\n"));
  86         fprintf(stderr, _(""
  87                 " -v                   Be verbose\n"
  88                 " -b superblock        Use alternative superblock\n"
  89                 " -B blocksize         Force blocksize when looking for superblock\n"
  90                 " -j external_journal  Set location of the external journal\n"
  91                 " -l bad_blocks_file   Add to badblocks list\n"
  92                 " -L bad_blocks_file   Set badblocks list\n"
  93                 ));
  94
  95         exit(FSCK_USAGE);
  96 }
  97
  98 static void show_stats(e2fsck_t ctx)
  99 {
 100         ext2_filsys fs = ctx->fs;
 101         ext2_ino_t inodes, inodes_used;
 102         blk64_t blocks, blocks_used;
 103         unsigned int dir_links;
 104         unsigned int num_files, num_links;
 105         int frag_percent_file, frag_percent_dir, frag_percent_total;
 106         int i, j;
 107
 108         dir_links = 2 * ctx->fs_directory_count - 1;
 109         num_files = ctx->fs_total_count - dir_links;
 110         num_links = ctx->fs_links_count - dir_links;
 111         inodes = fs->super->s_inodes_count;
 112         inodes_used = (fs->super->s_inodes_count -
 113                        fs->super->s_free_inodes_count);
 114         blocks = ext2fs_blocks_count(fs->super);
 115         blocks_used = (ext2fs_blocks_count(fs->super) -
 116                        ext2fs_free_blocks_count(fs->super));
 117
 118         frag_percent_file = (10000 * ctx->fs_fragmented) / inodes_used;
 119         frag_percent_file = (frag_percent_file + 5) / 10;
 120
 121         frag_percent_dir = (10000 * ctx->fs_fragmented_dir) / inodes_used;
 122         frag_percent_dir = (frag_percent_dir + 5) / 10;
 123
 124         frag_percent_total = ((10000 * (ctx->fs_fragmented +
 125                                         ctx->fs_fragmented_dir))
 126                               / inodes_used);
 127         frag_percent_total = (frag_percent_total + 5) / 10;
 128
 129         if (!verbose) {
 130                 log_out(ctx, _("%s: %u/%u files (%0d.%d%% non-contiguous), "
 131                                "%llu/%llu blocks\n"),
 132                         ctx->device_name, inodes_used, inodes,
 133                         frag_percent_total / 10, frag_percent_total % 10,
 134                         blocks_used, blocks);
 135                 return;
 136         }
 137         log_out(ctx, P_("\n%8u inode used (%2.2f%%)\n",
 138                         "\n%8u inodes used (%2.2f%%)\n",
 139                         inodes_used), inodes_used,
 140                 100.0 * inodes_used / inodes);
 141         log_out(ctx, P_("%8u non-contiguous file (%0d.%d%%)\n",
 142                         "%8u non-contiguous files (%0d.%d%%)\n",
 143                         ctx->fs_fragmented),
 144                 ctx->fs_fragmented, frag_percent_file / 10,
 145                 frag_percent_file % 10);
 146         log_out(ctx, P_("%8u non-contiguous directory (%0d.%d%%)\n",
 147                         "%8u non-contiguous directories (%0d.%d%%)\n",
 148                         ctx->fs_fragmented_dir),
 149                 ctx->fs_fragmented_dir, frag_percent_dir / 10,
 150                 frag_percent_dir % 10);
 151         log_out(ctx, _("         # of inodes with ind/dind/tind blocks: "
 152                        "%u/%u/%u\n"),
 153                 ctx->fs_ind_count, ctx->fs_dind_count, ctx->fs_tind_count);
 154
 155         for (j=MAX_EXTENT_DEPTH_COUNT-1; j >=0; j--)
 156                 if (ctx->extent_depth_count[j])
 157                         break;
 158         if (++j) {
 159                 log_out(ctx, _("         Extent depth histogram: "));
 160                 for (i=0; i < j; i++) {
 161                         if (i)
 162                                 fputc('/', stdout);
 163                         log_out(ctx, "%u", ctx->extent_depth_count[i]);
 164                 }
 165                 log_out(ctx, "\n");
 166         }
 167
 168         log_out(ctx, P_("%8llu block used (%2.2f%%)\n",
 169                         "%8llu blocks used (%2.2f%%)\n",
 170                    blocks_used), blocks_used, 100.0 * blocks_used / blocks);
 171         log_out(ctx, P_("%8u bad block\n", "%8u bad blocks\n",
 172                         ctx->fs_badblocks_count), ctx->fs_badblocks_count);
 173         log_out(ctx, P_("%8u large file\n", "%8u large files\n",
 174                         ctx->large_files), ctx->large_files);
 175         log_out(ctx, P_("\n%8u regular file\n", "\n%8u regular files\n",
 176                         ctx->fs_regular_count), ctx->fs_regular_count);
 177         log_out(ctx, P_("%8u directory\n", "%8u directories\n",
 178                         ctx->fs_directory_count), ctx->fs_directory_count);
 179         log_out(ctx, P_("%8u character device file\n",
 180                         "%8u character device files\n", ctx->fs_chardev_count),
 181                 ctx->fs_chardev_count);
 182         log_out(ctx, P_("%8u block device file\n", "%8u block device files\n",
 183                         ctx->fs_blockdev_count), ctx->fs_blockdev_count);
 184         log_out(ctx, P_("%8u fifo\n", "%8u fifos\n", ctx->fs_fifo_count),
 185                 ctx->fs_fifo_count);
 186         log_out(ctx, P_("%8u link\n", "%8u links\n",
 187                         ctx->fs_links_count - dir_links),
 188                 ctx->fs_links_count - dir_links);
 189         log_out(ctx, P_("%8u symbolic link", "%8u symbolic links",
 190                         ctx->fs_symlinks_count), ctx->fs_symlinks_count);
 191         log_out(ctx, P_(" (%u fast symbolic link)\n",
 192                         " (%u fast symbolic links)\n",
 193                         ctx->fs_fast_symlinks_count),
 194                 ctx->fs_fast_symlinks_count);
 195         log_out(ctx, P_("%8u socket\n", "%8u sockets\n", ctx->fs_sockets_count),
 196                 ctx->fs_sockets_count);
 197         log_out(ctx, "--------\n");
 198         log_out(ctx, P_("%8u file\n", "%8u files\n",
 199                         ctx->fs_total_count - dir_links),
 200                 ctx->fs_total_count - dir_links);
 201 }
 202
 203 static void check_mount(e2fsck_t ctx)
 204 {
 205         errcode_t       retval;
 206         int             cont;
 207
 208         retval = ext2fs_check_if_mounted(ctx->filesystem_name,
 209                                          &ctx->mount_flags);
 210         if (retval) {
 211                 com_err("ext2fs_check_if_mount", retval,
 212                         _("while determining whether %s is mounted."),
 213                         ctx->filesystem_name);
 214                 return;
 215         }
 216
 217         /*
 218          * If the filesystem isn't mounted, or it's the root
 219          * filesystem and it's mounted read-only, and we're not doing
 220          * a read/write check, then everything's fine.
 221          */
 222         if ((!(ctx->mount_flags & (EXT2_MF_MOUNTED | EXT2_MF_BUSY))) ||
 223             ((ctx->mount_flags & EXT2_MF_ISROOT) &&
 224              (ctx->mount_flags & EXT2_MF_READONLY) &&
 225              !(ctx->options & E2F_OPT_WRITECHECK)))
 226                 return;
 227
 228         if ((ctx->options & E2F_OPT_READONLY) &&
 229             !(ctx->options & E2F_OPT_WRITECHECK)) {
 230                 log_out(ctx, _("Warning!  %s is %s.\n"),
 231                         ctx->filesystem_name,
 232                         ctx->mount_flags & EXT2_MF_MOUNTED ?
 233                                 "mounted" : "in use");
 234                 return;
 235         }
 236
 237         log_out(ctx, _("%s is %s.\n"), ctx->filesystem_name,
 238                 ctx->mount_flags & EXT2_MF_MOUNTED ? "mounted" : "in use");
 239         if (!ctx->interactive || ctx->mount_flags & EXT2_MF_BUSY)
 240                 fatal_error(ctx, _("Cannot continue, aborting.\n\n"));
 241         puts("\007\007\007\007");
 242         log_out(ctx, _("\n\nWARNING!!!  "
 243                        "The filesystem is mounted.   "
 244                        "If you continue you ***WILL***\n"
 245                        "cause ***SEVERE*** filesystem damage.\n\n"));
 246         puts("\007\007\007");
 247         cont = ask_yn(ctx, _("Do you really want to continue"), 0);
 248         if (!cont) {
 249                 printf (_("check aborted.\n"));
 250                 exit (0);
 251         }
 252         return;
 253 }
 254
 255 static int is_on_batt(void)
 256 {
 257         FILE    *f;
 258         DIR     *d;
 259         char    tmp[80], tmp2[80], fname[80];
 260         unsigned int    acflag;
 261         struct dirent*  de;
 262
 263         f = fopen("/sys/class/power_supply/AC/online", "r");
 264         if (f) {
 265                 if (fscanf(f, "%u\n", &acflag) == 1) {
 266                         fclose(f);
 267                         return (!acflag);
 268                 }
 269                 fclose(f);
 270         }
 271         f = fopen("/proc/apm", "r");
 272         if (f) {
 273                 if (fscanf(f, "%s %s %s %x", tmp, tmp, tmp, &acflag) != 4)
 274                         acflag = 1;
 275                 fclose(f);
 276                 return (acflag != 1);
 277         }
 278         d = opendir("/proc/acpi/ac_adapter");
 279         if (d) {
 280                 while ((de=readdir(d)) != NULL) {
 281                         if (!strncmp(".", de->d_name, 1))
 282                                 continue;
 283                         snprintf(fname, 80, "/proc/acpi/ac_adapter/%s/state",
 284                                  de->d_name);
 285                         f = fopen(fname, "r");
 286                         if (!f)
 287                                 continue;
 288                         if (fscanf(f, "%s %s", tmp2, tmp) != 2)
 289                                 tmp[0] = 0;
 290                         fclose(f);
 291                         if (strncmp(tmp, "off-line", 8) == 0) {
 292                                 closedir(d);
 293                                 return 1;
 294                         }
 295                 }
 296                 closedir(d);
 297         }
 298         return 0;
 299 }
 300
 301 /*
 302  * This routine checks to see if a filesystem can be skipped; if so,
 303  * it will exit with E2FSCK_OK.  Under some conditions it will print a
 304  * message explaining why a check is being forced.
 305  */
 306 static void check_if_skip(e2fsck_t ctx)
 307 {
 308         ext2_filsys fs = ctx->fs;
 309         struct problem_context pctx;
 310         const char *reason = NULL;
 311         unsigned int reason_arg = 0;
 312         long next_check;
 313         int batt = is_on_batt();
 314         int defer_check_on_battery;
 315         int broken_system_clock;
 316         time_t lastcheck;
 317
 318         profile_get_boolean(ctx->profile, "options", "broken_system_clock",
 319                             0, 0, &broken_system_clock);
 320         if (ctx->flags & E2F_FLAG_TIME_INSANE)
 321                 broken_system_clock = 1;
 322         profile_get_boolean(ctx->profile, "options",
 323                             "defer_check_on_battery", 0, 1,
 324                             &defer_check_on_battery);
 325         if (!defer_check_on_battery)
 326                 batt = 0;
 327
 328         if ((ctx->options & E2F_OPT_FORCE) || bad_blocks_file || cflag)
 329                 return;
 330
 331         if (ctx->options & E2F_OPT_JOURNAL_ONLY)
 332                 goto skip;
 333
 334         lastcheck = fs->super->s_lastcheck;
 335         if (lastcheck > ctx->now)
 336                 lastcheck -= ctx->time_fudge;
 337         if ((fs->super->s_state & EXT2_ERROR_FS) ||
 338             !ext2fs_test_valid(fs))
 339                 reason = _(" contains a file system with errors");
 340         else if ((fs->super->s_state & EXT2_VALID_FS) == 0)
 341                 reason = _(" was not cleanly unmounted");
 342         else if (check_backup_super_block(ctx))
 343                 reason = _(" primary superblock features different from backup");
 344         else if ((fs->super->s_max_mnt_count > 0) &&
 345                  (fs->super->s_mnt_count >=
 346                   (unsigned) fs->super->s_max_mnt_count)) {
 347                 reason = _(" has been mounted %u times without being checked");
 348                 reason_arg = fs->super->s_mnt_count;
 349                 if (batt && (fs->super->s_mnt_count <
 350                              (unsigned) fs->super->s_max_mnt_count*2))
 351                         reason = 0;
 352         } else if (!broken_system_clock && fs->super->s_checkinterval &&
 353                    (ctx->now < lastcheck)) {
 354                 reason = _(" has filesystem last checked time in the future");
 355                 if (batt)
 356                         reason = 0;
 357         } else if (!broken_system_clock && fs->super->s_checkinterval &&
 358                    ((ctx->now - lastcheck) >=
 359                     ((time_t) fs->super->s_checkinterval))) {
 360                 reason = _(" has gone %u days without being checked");
 361                 reason_arg = (ctx->now - fs->super->s_lastcheck)/(3600*24);
 362                 if (batt && ((ctx->now - fs->super->s_lastcheck) <
 363                              fs->super->s_checkinterval*2))
 364                         reason = 0;
 365         }
 366         if (reason) {
 367                 log_out(ctx, "%s", ctx->device_name);
 368                 log_out(ctx, reason, reason_arg);
 369                 log_out(ctx, _(", check forced.\n"));
 370                 return;
 371         }
 372
 373         /*
 374          * Update the global counts from the block group counts.  This
 375          * is needed since modern kernels don't update the global
 376          * counts so as to avoid locking the entire file system.  So
 377          * if the filesystem is not unmounted cleanly, the global
 378          * counts may not be accurate.  Update them here if we can,
 379          * for the benefit of users who might examine the file system
 380          * using dumpe2fs.  (This is for cosmetic reasons only.)
 381          */
 382         clear_problem_context(&pctx);
 383         pctx.ino = fs->super->s_free_inodes_count;
 384         pctx.ino2 = ctx->free_inodes;
 385         if ((pctx.ino != pctx.ino2) &&
 386             !(ctx->options & E2F_OPT_READONLY) &&
 387             fix_problem(ctx, PR_0_FREE_INODE_COUNT, &pctx)) {
 388                 fs->super->s_free_inodes_count = ctx->free_inodes;
 389                 ext2fs_mark_super_dirty(fs);
 390         }
 391         clear_problem_context(&pctx);
 392         pctx.blk = ext2fs_free_blocks_count(fs->super);
 393         pctx.blk2 = ctx->free_blocks;
 394         if ((pctx.blk != pctx.blk2) &&
 395             !(ctx->options & E2F_OPT_READONLY) &&
 396             fix_problem(ctx, PR_0_FREE_BLOCK_COUNT, &pctx)) {
 397                 ext2fs_free_blocks_count_set(fs->super, ctx->free_blocks);
 398                 ext2fs_mark_super_dirty(fs);
 399         }
 400
 401         /* Print the summary message when we're skipping a full check */
 402         log_out(ctx, _("%s: clean, %u/%u files, %llu/%llu blocks"),
 403                 ctx->device_name,
 404                 fs->super->s_inodes_count - fs->super->s_free_inodes_count,
 405                 fs->super->s_inodes_count,
 406                 ext2fs_blocks_count(fs->super) -
 407                 ext2fs_free_blocks_count(fs->super),
 408                 ext2fs_blocks_count(fs->super));
 409         next_check = 100000;
 410         if (fs->super->s_max_mnt_count > 0) {
 411                 next_check = fs->super->s_max_mnt_count - fs->super->s_mnt_count;
 412                 if (next_check <= 0)
 413                         next_check = 1;
 414         }
 415         if (!broken_system_clock && fs->super->s_checkinterval &&
 416             ((ctx->now - fs->super->s_lastcheck) >= fs->super->s_checkinterval))
 417                 next_check = 1;
 418         if (next_check <= 5) {
 419                 if (next_check == 1) {
 420                         if (batt)
 421                                 log_out(ctx, _(" (check deferred; "
 422                                                "on battery)"));
 423                         else
 424                                 log_out(ctx, _(" (check after next mount)"));
 425                 } else
 426                         log_out(ctx, _(" (check in %ld mounts)"), next_check);
 427         }
 428         log_out(ctx, "\n");
 429 skip:
 430         ext2fs_close(fs);
 431         ctx->fs = NULL;
 432         e2fsck_free_context(ctx);
 433         exit(FSCK_OK);
 434 }
 435
 436 /*
 437  * For completion notice
 438  */
 439 struct percent_tbl {
 440         int     max_pass;
 441         int     table[32];
 442 };
 443 struct percent_tbl e2fsck_tbl = {
 444         5, { 0, 70, 90, 92,  95, 100 }
 445 };
 446 static char bar[128], spaces[128];
 447
 448 static float calc_percent(struct percent_tbl *tbl, int pass, int curr,
 449                           int max)
 450 {
 451         float   percent;
 452
 453         if (pass <= 0)
 454                 return 0.0;
 455         if (pass > tbl->max_pass || max == 0)
 456                 return 100.0;
 457         percent = ((float) curr) / ((float) max);
 458         return ((percent * (tbl->table[pass] - tbl->table[pass-1]))
 459                 + tbl->table[pass-1]);
 460 }
 461
 462 extern void e2fsck_clear_progbar(e2fsck_t ctx)
 463 {
 464         if (!(ctx->flags & E2F_FLAG_PROG_BAR))
 465                 return;
 466
 467         printf("%s%s\r%s", ctx->start_meta, spaces + (sizeof(spaces) - 80),
 468                ctx->stop_meta);
 469         fflush(stdout);
 470         ctx->flags &= ~E2F_FLAG_PROG_BAR;
 471 }
 472
 473 int e2fsck_simple_progress(e2fsck_t ctx, const char *label, float percent,
 474                            unsigned int dpynum)
 475 {
 476         static const char spinner[] = "\\|/-";
 477         int     i;
 478         unsigned int    tick;
 479         struct timeval  tv;
 480         int dpywidth;
 481         int fixed_percent;
 482
 483         if (ctx->flags & E2F_FLAG_PROG_SUPPRESS)
 484                 return 0;
 485
 486         /*
 487          * Calculate the new progress position.  If the
 488          * percentage hasn't changed, then we skip out right
 489          * away.
 490          */
 491         fixed_percent = (int) ((10 * percent) + 0.5);
 492         if (ctx->progress_last_percent == fixed_percent)
 493                 return 0;
 494         ctx->progress_last_percent = fixed_percent;
 495
 496         /*
 497          * If we've already updated the spinner once within
 498          * the last 1/8th of a second, no point doing it
 499          * again.
 500          */
 501         gettimeofday(&tv, NULL);
 502         tick = (tv.tv_sec << 3) + (tv.tv_usec / (1000000 / 8));
 503         if ((tick == ctx->progress_last_time) &&
 504             (fixed_percent != 0) && (fixed_percent != 1000))
 505                 return 0;
 506         ctx->progress_last_time = tick;
 507
 508         /*
 509          * Advance the spinner, and note that the progress bar
 510          * will be on the screen
 511          */
 512         ctx->progress_pos = (ctx->progress_pos+1) & 3;
 513         ctx->flags |= E2F_FLAG_PROG_BAR;
 514
 515         dpywidth = 66 - strlen(label);
 516         dpywidth = 8 * (dpywidth / 8);
 517         if (dpynum)
 518                 dpywidth -= 8;
 519
 520         i = ((percent * dpywidth) + 50) / 100;
 521         printf("%s%s: |%s%s", ctx->start_meta, label,
 522                bar + (sizeof(bar) - (i+1)),
 523                spaces + (sizeof(spaces) - (dpywidth - i + 1)));
 524         if (fixed_percent == 1000)
 525                 fputc('|', stdout);
 526         else
 527                 fputc(spinner[ctx->progress_pos & 3], stdout);
 528         printf(" %4.1f%%  ", percent);
 529         if (dpynum)
 530                 printf("%u\r", dpynum);
 531         else
 532                 fputs(" \r", stdout);
 533         fputs(ctx->stop_meta, stdout);
 534
 535         if (fixed_percent == 1000)
 536                 e2fsck_clear_progbar(ctx);
 537         fflush(stdout);
 538
 539         return 0;
 540 }
 541
 542 static int e2fsck_update_progress(e2fsck_t ctx, int pass,
 543                                   unsigned long cur, unsigned long max)
 544 {
 545         char buf[1024];
 546         float percent;
 547
 548         if (pass == 0)
 549                 return 0;
 550
 551         if (ctx->progress_fd) {
 552                 snprintf(buf, sizeof(buf), "%d %lu %lu %s\n",
 553                          pass, cur, max, ctx->device_name);
 554                 write_all(ctx->progress_fd, buf, strlen(buf));
 555         } else {
 556                 percent = calc_percent(&e2fsck_tbl, pass, cur, max);
 557                 e2fsck_simple_progress(ctx, ctx->device_name,
 558                                        percent, 0);
 559         }
 560         return 0;
 561 }
 562
 563 #define PATH_SET "PATH=/sbin"
 564
 565 /*
 566  * Make sure 0,1,2 file descriptors are open, so that we don't open
 567  * the filesystem using the same file descriptor as stdout or stderr.
 568  */
 569 static void reserve_stdio_fds(void)
 570 {
 571         int     fd = 0;
 572
 573         while (fd <= 2) {
 574                 fd = open("/dev/null", O_RDWR);
 575                 if (fd < 0) {
 576                         fprintf(stderr, _("ERROR: Couldn't open "
 577                                 "/dev/null (%s)\n"),
 578                                 strerror(errno));
 579                         break;
 580                 }
 581         }
 582 }
 583
 584 #ifdef HAVE_SIGNAL_H
 585 static void signal_progress_on(int sig EXT2FS_ATTR((unused)))
 586 {
 587         e2fsck_t ctx = e2fsck_global_ctx;
 588
 589         if (!ctx)
 590                 return;
 591
 592         ctx->progress = e2fsck_update_progress;
 593 }
 594
 595 static void signal_progress_off(int sig EXT2FS_ATTR((unused)))
 596 {
 597         e2fsck_t ctx = e2fsck_global_ctx;
 598
 599         if (!ctx)
 600                 return;
 601
 602         e2fsck_clear_progbar(ctx);
 603         ctx->progress = 0;
 604 }
 605
 606 static void signal_cancel(int sig EXT2FS_ATTR((unused)))
 607 {
 608         e2fsck_t ctx = e2fsck_global_ctx;
 609
 610         if (!ctx)
 611                 exit(FSCK_CANCELED);
 612
 613         ctx->flags |= E2F_FLAG_CANCEL;
 614 }
 615 #endif
 616
 617 static void initialize_profile_options(e2fsck_t ctx)
 618 {
 619         char *tmp;
 620
 621         /* [options] shared=preserve|lost+found|delete */
 622         tmp = NULL;
 623         ctx->shared = E2F_SHARED_PRESERVE;
 624         profile_get_string(ctx->profile, "options", "shared", 0,
 625                            "preserve", &tmp);
 626         if (tmp) {
 627                 if (strcmp(tmp, "preserve") == 0)
 628                         ctx->shared = E2F_SHARED_PRESERVE;
 629                 else if (strcmp(tmp, "delete") == 0)
 630                         ctx->shared = E2F_SHARED_DELETE;
 631                 else if (strcmp(tmp, "lost+found") == 0)
 632                         ctx->shared = E2F_SHARED_LPF;
 633                 else {
 634                         com_err(ctx->program_name, 0,
 635                                 _("configuration error: 'shared=%s'"), tmp);
 636                         fatal_error(ctx, 0);
 637                 }
 638                 free(tmp);
 639         }
 640
 641         /* [options] clone=dup|zero */
 642         tmp = NULL;
 643         ctx->clone = E2F_CLONE_DUP;
 644         profile_get_string(ctx->profile, "options", "clone", 0,
 645                            "dup", &tmp);
 646         if (tmp) {
 647                 if (strcmp(tmp, "dup") == 0)
 648                         ctx->clone = E2F_CLONE_DUP;
 649                 else if (strcmp(tmp, "zero") == 0)
 650                         ctx->clone = E2F_CLONE_ZERO;
 651                 else {
 652                         com_err(ctx->program_name, 0,
 653                                 _("configuration error: 'clone=%s'"), tmp);
 654                         fatal_error(ctx, 0);
 655                 }
 656                 free(tmp);
 657         }
 658 }
 659
 660 static void parse_extended_opts(e2fsck_t ctx, const char *opts)
 661 {
 662         char    *buf, *token, *next, *p, *arg;
 663         int     ea_ver;
 664         int     extended_usage = 0;
 665
 666         buf = string_copy(ctx, opts, 0);
 667         for (token = buf; token && *token; token = next) {
 668                 p = strchr(token, ',');
 669                 next = 0;
 670                 if (p) {
 671                         *p = 0;
 672                         next = p+1;
 673                 }
 674                 arg = strchr(token, '=');
 675                 if (arg) {
 676                         *arg = 0;
 677                         arg++;
 678                 }
 679                 if (strcmp(token, "ea_ver") == 0) {
 680                         if (!arg) {
 681                                 extended_usage++;
 682                                 continue;
 683                         }
 684                         ea_ver = strtoul(arg, &p, 0);
 685                         if (*p ||
 686                             ((ea_ver != 1) && (ea_ver != 2))) {
 687                                 fprintf(stderr,
 688                                         _("Invalid EA version.\n"));
 689                                 extended_usage++;
 690                                 continue;
 691                         }
 692                         ctx->ext_attr_ver = ea_ver;
 693                 } else if (strcmp(token, "fragcheck") == 0) {
 694                         ctx->options |= E2F_OPT_FRAGCHECK;
 695                         continue;
 696                 /* -E shared=preserve|lost+found|delete */
 697                 } else if (strcmp(token, "shared") == 0) {
 698                         if (!arg) {
 699                                 extended_usage++;
 700                                 continue;
 701                         }
 702                         if (strcmp(arg, "preserve") == 0) {
 703                                 ctx->shared = E2F_SHARED_PRESERVE;
 704                         } else if (strcmp(arg, "lost+found") == 0) {
 705                                 ctx->shared = E2F_SHARED_LPF;
 706                         } else if (strcmp(arg, "delete") == 0) {
 707                                 ctx->shared = E2F_SHARED_DELETE;
 708                         } else {
 709                                 extended_usage++;
 710                                 continue;
 711                         }
 712                 /* -E clone=dup|zero */
 713                 } else if (strcmp(token, "clone") == 0) {
 714                         if (!arg) {
 715                                 extended_usage++;
 716                                 continue;
 717                         }
 718                         if (strcmp(arg, "dup") == 0) {
 719                                 ctx->clone = E2F_CLONE_DUP;
 720                         } else if (strcmp(arg, "zero") == 0) {
 721                                 ctx->clone = E2F_CLONE_ZERO;
 722                         } else {
 723                                 extended_usage++;
 724                                 continue;
 725                         }
 726                 } else if (strcmp(token, "expand_extra_isize") == 0) {
 727                         ctx->flags |= E2F_FLAG_EXPAND_EISIZE;
 728                         if (arg) {
 729                                 extended_usage++;
 730                                 continue;
 731                         }
 732                 /* -E inode_badness_threshold=<value> */
 733                 } else if (strcmp(token, "inode_badness_threshold") == 0) {
 734                         if (!arg) {
 735                                 extended_usage++;
 736                                 continue;
 737                         }
 738                         ctx->inode_badness_threshold = strtoul(arg, &p, 0);
 739                         if (*p != '\0' || ctx->inode_badness_threshold > 200) {
 740                                 fprintf(stderr, _("Invalid badness value.\n"));
 741                                 extended_usage++;
 742                                 continue;
 743                         }
 744                 } else if (strcmp(token, "journal_only") == 0) {
 745                         if (arg) {
 746                                 extended_usage++;
 747                                 continue;
 748                         }
 749                         ctx->options |= E2F_OPT_JOURNAL_ONLY;
 750                 } else if (strcmp(token, "discard") == 0) {
 751                         ctx->options |= E2F_OPT_DISCARD;
 752                         continue;
 753                 } else if (strcmp(token, "nodiscard") == 0) {
 754                         ctx->options &= ~E2F_OPT_DISCARD;
 755                         continue;
 756                 } else if (strcmp(token, "log_filename") == 0) {
 757                         if (!arg)
 758                                 extended_usage++;
 759                         else
 760                                 ctx->log_fn = string_copy(ctx, arg, 0);
 761                         continue;
 762                 } else {
 763                         fprintf(stderr, _("Unknown extended option: %s\n"),
 764                                 token);
 765                         extended_usage++;
 766                 }
 767         }
 768         free(buf);
 769
 770         if (extended_usage) {
 771                 fputs(("\nExtended options are separated by commas, "
 772                        "and may take an argument which\n"
 773                        "is set off by an equals ('=') sign.  "
 774                        "Valid extended options are:\n"), stderr);
 775                 fputs(("\tea_ver=<ea_version (1 or 2)>\n"), stderr);
 776                 fputs(("\tfragcheck\n"), stderr);
 777                 fputs(("\tjournal_only\n"), stderr);
 778                 fputs(("\tdiscard\n"), stderr);
 779                 fputs(("\tnodiscard\n"), stderr);
 780                 fputs(("\tshared=<preserve|lost+found|delete>\n"), stderr);
 781                 fputs(("\tclone=<dup|zero>\n"), stderr);
 782                 fputs(("\texpand_extra_isize\n"), stderr);
 783                 fputs(("\tinode_badness_threhold=(value)\n"), stderr);
 784                 fputc('\n', stderr);
 785                 exit(1);
 786         }
 787 }
 788
 789 static void syntax_err_report(const char *filename, long err, int line_num)
 790 {
 791         fprintf(stderr,
 792                 _("Syntax error in e2fsck config file (%s, line #%d)\n\t%s\n"),
 793                 filename, line_num, error_message(err));
 794         exit(FSCK_ERROR);
 795 }
 796
 797 static const char *config_fn[] = { ROOT_SYSCONFDIR "/e2fsck.conf", 0 };
 798
 799 static errcode_t PRS(int argc, char *argv[], e2fsck_t *ret_ctx)
 800 {
 801         int             flush = 0;
 802         int             c, fd;
 803 #ifdef MTRACE
 804         extern void     *mallwatch;
 805 #endif
 806         e2fsck_t        ctx;
 807         errcode_t       retval;
 808 #ifdef HAVE_SIGNAL_H
 809         struct sigaction        sa;
 810 #endif
 811         char            *cp;
 812         int             res;            /* result of sscanf */
 813 #ifdef CONFIG_JBD_DEBUG
 814         char            *jbd_debug;
 815 #endif
 816
 817         retval = e2fsck_allocate_context(&ctx);
 818         if (retval)
 819                 return retval;
 820
 821         *ret_ctx = ctx;
 822
 823         setvbuf(stdout, NULL, _IONBF, BUFSIZ);
 824         setvbuf(stderr, NULL, _IONBF, BUFSIZ);
 825         if (isatty(0) && isatty(1)) {
 826                 ctx->interactive = 1;
 827         } else {
 828                 ctx->start_meta[0] = '\001';
 829                 ctx->stop_meta[0] = '\002';
 830         }
 831         memset(bar, '=', sizeof(bar)-1);
 832         memset(spaces, ' ', sizeof(spaces)-1);
 833         add_error_table(&et_ext2_error_table);
 834         add_error_table(&et_prof_error_table);
 835         blkid_get_cache(&ctx->blkid, NULL);
 836
 837         if (argc && *argv)
 838                 ctx->program_name = *argv;
 839         else
 840                 ctx->program_name = "e2fsck";
 841
 842         cp = getenv("E2FSCK_CONFIG");
 843         if (cp != NULL)
 844                 config_fn[0] = cp;
 845         profile_set_syntax_err_cb(syntax_err_report);
 846         profile_init(config_fn, &ctx->profile);
 847
 848         initialize_profile_options(ctx);
 849
 850         ctx->inode_badness_threshold = BADNESS_THRESHOLD;
 851
 852         while ((c = getopt (argc, argv, "panyrcC:B:dE:fvtFVM:b:I:j:P:l:L:N:SsDk")) != EOF)
 853                 switch (c) {
 854                 case 'C':
 855                         ctx->progress = e2fsck_update_progress;
 856                         res = sscanf(optarg, "%d", &ctx->progress_fd);
 857                         if (res != 1)
 858                                 goto sscanf_err;
 859
 860                         if (ctx->progress_fd < 0) {
 861                                 ctx->progress = 0;
 862                                 ctx->progress_fd = ctx->progress_fd * -1;
 863                         }
 864                         if (!ctx->progress_fd)
 865                                 break;
 866                         /* Validate the file descriptor to avoid disasters */
 867                         fd = dup(ctx->progress_fd);
 868                         if (fd < 0) {
 869                                 fprintf(stderr,
 870                                 _("Error validating file descriptor %d: %s\n"),
 871                                         ctx->progress_fd,
 872                                         error_message(errno));
 873                                 fatal_error(ctx,
 874                         _("Invalid completion information file descriptor"));
 875                         } else
 876                                 close(fd);
 877                         break;
 878                 case 'D':
 879                         ctx->options |= E2F_OPT_COMPRESS_DIRS;
 880                         break;
 881                 case 'E':
 882                         parse_extended_opts(ctx, optarg);
 883                         break;
 884                 case 'p':
 885                 case 'a':
 886                         if (ctx->options & (E2F_OPT_YES|E2F_OPT_NO)) {
 887                         conflict_opt:
 888                                 fatal_error(ctx,
 889         _("Only one of the options -p/-a, -n or -y may be specified."));
 890                         }
 891                         ctx->options |= E2F_OPT_PREEN;
 892                         break;
 893                 case 'n':
 894                         if (ctx->options & (E2F_OPT_YES|E2F_OPT_PREEN))
 895                                 goto conflict_opt;
 896                         ctx->options |= E2F_OPT_NO;
 897                         break;
 898                 case 'y':
 899                         if (ctx->options & (E2F_OPT_PREEN|E2F_OPT_NO))
 900                                 goto conflict_opt;
 901                         ctx->options |= E2F_OPT_YES;
 902                         break;
 903                 case 't':
 904 #ifdef RESOURCE_TRACK
 905                         if (ctx->options & E2F_OPT_TIME)
 906                                 ctx->options |= E2F_OPT_TIME2;
 907                         else
 908                                 ctx->options |= E2F_OPT_TIME;
 909 #else
 910                         fprintf(stderr, _("The -t option is not "
 911                                 "supported on this version of e2fsck.\n"));
 912 #endif
 913                         break;
 914                 case 'c':
 915                         if (cflag++)
 916                                 ctx->options |= E2F_OPT_WRITECHECK;
 917                         ctx->options |= E2F_OPT_CHECKBLOCKS;
 918                         break;
 919                 case 'r':
 920                         /* What we do by default, anyway! */
 921                         break;
 922                 case 'b':
 923                         res = sscanf(optarg, "%llu", &ctx->use_superblock);
 924                         if (res != 1)
 925                                 goto sscanf_err;
 926                         ctx->flags |= E2F_FLAG_SB_SPECIFIED;
 927                         break;
 928                 case 'B':
 929                         ctx->blocksize = atoi(optarg);
 930                         break;
 931                 case 'I':
 932                         res = sscanf(optarg, "%d", &ctx->inode_buffer_blocks);
 933                         if (res != 1)
 934                                 goto sscanf_err;
 935                         break;
 936                 case 'j':
 937                         ctx->journal_name = blkid_get_devname(ctx->blkid,
 938                                                               optarg, NULL);
 939                         if (!ctx->journal_name) {
 940                                 com_err(ctx->program_name, 0,
 941                                         _("Unable to resolve '%s'"),
 942                                         optarg);
 943                                 fatal_error(ctx, 0);
 944                         }
 945                         break;
 946                 case 'P':
 947                         res = sscanf(optarg, "%d", &ctx->process_inode_size);
 948                         if (res != 1)
 949                                 goto sscanf_err;
 950                         break;
 951                 case 'L':
 952                         replace_bad_blocks++;
 953                 case 'l':
 954                         bad_blocks_file = string_copy(ctx, optarg, 0);
 955                         break;
 956                 case 'd':
 957                         ctx->options |= E2F_OPT_DEBUG;
 958                         break;
 959                 case 'f':
 960                         ctx->options |= E2F_OPT_FORCE;
 961                         break;
 962                 case 'F':
 963                         flush = 1;
 964                         break;
 965                 case 'v':
 966                         verbose = 1;
 967                         break;
 968                 case 'V':
 969                         show_version_only = 1;
 970                         break;
 971 #ifdef MTRACE
 972                 case 'M':
 973                         mallwatch = (void *) strtol(optarg, NULL, 0);
 974                         break;
 975 #endif
 976                 case 'N':
 977                         ctx->device_name = string_copy(ctx, optarg, 0);
 978                         break;
 979                 case 'k':
 980                         keep_bad_blocks++;
 981                         break;
 982                 default:
 983                         usage(ctx);
 984                 }
 985         if (show_version_only)
 986                 return 0;
 987         if (optind != argc - 1)
 988                 usage(ctx);
 989         if ((ctx->options & E2F_OPT_NO) &&
 990             (ctx->options & E2F_OPT_COMPRESS_DIRS)) {
 991                 com_err(ctx->program_name, 0,
 992                         _("The -n and -D options are incompatible."));
 993                 fatal_error(ctx, 0);
 994         }
 995         if ((ctx->options & E2F_OPT_NO) && cflag) {
 996                 com_err(ctx->program_name, 0,
 997                         _("The -n and -c options are incompatible."));
 998                 fatal_error(ctx, 0);
 999         }
1000         if ((ctx->options & E2F_OPT_NO) && bad_blocks_file) {
1001                 com_err(ctx->program_name, 0,
1002                         _("The -n and -l/-L options are incompatible."));
1003                 fatal_error(ctx, 0);
1004         }
1005         if (ctx->options & E2F_OPT_NO)
1006                 ctx->options |= E2F_OPT_READONLY;
1007
1008         ctx->io_options = strchr(argv[optind], '?');
1009         if (ctx->io_options)
1010                 *ctx->io_options++ = 0;
1011         ctx->filesystem_name = blkid_get_devname(ctx->blkid, argv[optind], 0);
1012         if (!ctx->filesystem_name) {
1013                 com_err(ctx->program_name, 0, _("Unable to resolve '%s'"),
1014                         argv[optind]);
1015                 fatal_error(ctx, 0);
1016         }
1017
1018         /* Turn off discard in read-only mode */
1019         if ((ctx->options & E2F_OPT_NO) &&
1020             (ctx->options & E2F_OPT_DISCARD))
1021                 ctx->options &= ~E2F_OPT_DISCARD;
1022
1023         if (flush) {
1024                 fd = open(ctx->filesystem_name, O_RDONLY, 0);
1025                 if (fd < 0) {
1026                         com_err("open", errno,
1027                                 _("while opening %s for flushing"),
1028                                 ctx->filesystem_name);
1029                         fatal_error(ctx, 0);
1030                 }
1031                 if ((retval = ext2fs_sync_device(fd, 1))) {
1032                         com_err("ext2fs_sync_device", retval,
1033                                 _("while trying to flush %s"),
1034                                 ctx->filesystem_name);
1035                         fatal_error(ctx, 0);
1036                 }
1037                 close(fd);
1038         }
1039         if (cflag && bad_blocks_file) {
1040                 fprintf(stderr, _("The -c and the -l/-L options may "
1041                                   "not be both used at the same time.\n"));
1042                 exit(FSCK_USAGE);
1043         }
1044 #ifdef HAVE_SIGNAL_H
1045         /*
1046          * Set up signal action
1047          */
1048         memset(&sa, 0, sizeof(struct sigaction));
1049         sa.sa_handler = signal_cancel;
1050         sigaction(SIGINT, &sa, 0);
1051         sigaction(SIGTERM, &sa, 0);
1052 #ifdef SA_RESTART
1053         sa.sa_flags = SA_RESTART;
1054 #endif
1055         e2fsck_global_ctx = ctx;
1056         sa.sa_handler = signal_progress_on;
1057         sigaction(SIGUSR1, &sa, 0);
1058         sa.sa_handler = signal_progress_off;
1059         sigaction(SIGUSR2, &sa, 0);
1060 #endif
1061
1062         /* Update our PATH to include /sbin if we need to run badblocks  */
1063         if (cflag) {
1064                 char *oldpath = getenv("PATH");
1065                 char *newpath;
1066                 int len = sizeof(PATH_SET) + 1;
1067
1068                 if (oldpath)
1069                         len += strlen(oldpath);
1070
1071                 newpath = malloc(len);
1072                 if (!newpath)
1073                         fatal_error(ctx, "Couldn't malloc() newpath");
1074                 strcpy(newpath, PATH_SET);
1075
1076                 if (oldpath) {
1077                         strcat(newpath, ":");
1078                         strcat(newpath, oldpath);
1079                 }
1080                 putenv(newpath);
1081         }
1082 #ifdef CONFIG_JBD_DEBUG
1083         jbd_debug = getenv("E2FSCK_JBD_DEBUG");
1084         if (jbd_debug) {
1085                 res = sscanf(jbd_debug, "%d", &journal_enable_debug);
1086                 if (res != 1) {
1087                         fprintf(stderr,
1088                                 _("E2FSCK_JBD_DEBUG \"%s\" not an integer\n\n"),
1089                                 jbd_debug);
1090                         exit (1);
1091                 }
1092         }
1093 #endif
1094         return 0;
1095
1096 sscanf_err:
1097         fprintf(stderr, _("\nInvalid non-numeric argument to -%c (\"%s\")\n\n"),
1098                 c, optarg);
1099         exit (1);
1100 }
1101
1102 static errcode_t try_open_fs(e2fsck_t ctx, int flags, io_manager io_ptr,
1103                              ext2_filsys *ret_fs)
1104 {
1105         errcode_t retval;
1106
1107         *ret_fs = NULL;
1108         if (ctx->superblock && ctx->blocksize) {
1109                 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
1110                                       flags, ctx->superblock, ctx->blocksize,
1111                                       io_ptr, ret_fs);
1112         } else if (ctx->superblock) {
1113                 int blocksize;
1114                 for (blocksize = EXT2_MIN_BLOCK_SIZE;
1115                      blocksize <= EXT2_MAX_BLOCK_SIZE; blocksize *= 2) {
1116                         if (*ret_fs) {
1117                                 ext2fs_free(*ret_fs);
1118                                 *ret_fs = NULL;
1119                         }
1120                         retval = ext2fs_open2(ctx->filesystem_name,
1121                                               ctx->io_options, flags,
1122                                               ctx->superblock, blocksize,
1123                                               io_ptr, ret_fs);
1124                         if (!retval)
1125                                 break;
1126                 }
1127         } else
1128                 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
1129                                       flags, 0, 0, io_ptr, ret_fs);
1130
1131         if (ret_fs)
1132                 e2fsck_set_bitmap_type(*ret_fs, EXT2FS_BMAP64_RBTREE,
1133                                        "default", NULL);
1134         return retval;
1135 }
1136
1137 static const char *my_ver_string = E2FSPROGS_VERSION;
1138 static const char *my_ver_date = E2FSPROGS_DATE;
1139
1140 static int e2fsck_check_mmp(ext2_filsys fs, e2fsck_t ctx)
1141 {
1142         struct mmp_struct *mmp_s;
1143         unsigned int mmp_check_interval;
1144         errcode_t retval = 0;
1145         struct problem_context pctx;
1146         unsigned int wait_time = 0;
1147
1148         clear_problem_context(&pctx);
1149         if (fs->mmp_buf == NULL) {
1150                 retval = ext2fs_get_mem(fs->blocksize, &fs->mmp_buf);
1151                 if (retval)
1152                         goto check_error;
1153         }
1154
1155         retval = ext2fs_mmp_read(fs, fs->super->s_mmp_block, fs->mmp_buf);
1156         if (retval)
1157                 goto check_error;
1158
1159         mmp_s = fs->mmp_buf;
1160
1161         mmp_check_interval = fs->super->s_mmp_update_interval;
1162         if (mmp_check_interval < EXT4_MMP_MIN_CHECK_INTERVAL)
1163                 mmp_check_interval = EXT4_MMP_MIN_CHECK_INTERVAL;
1164
1165         /*
1166          * If check_interval in MMP block is larger, use that instead of
1167          * check_interval from the superblock.
1168          */
1169         if (mmp_s->mmp_check_interval > mmp_check_interval)
1170                 mmp_check_interval = mmp_s->mmp_check_interval;
1171
1172         wait_time = mmp_check_interval * 2 + 1;
1173
1174         if (mmp_s->mmp_seq == EXT4_MMP_SEQ_CLEAN)
1175                 retval = 0;
1176         else if (mmp_s->mmp_seq == EXT4_MMP_SEQ_FSCK)
1177                 retval = EXT2_ET_MMP_FSCK_ON;
1178         else if (mmp_s->mmp_seq > EXT4_MMP_SEQ_MAX)
1179                 retval = EXT2_ET_MMP_UNKNOWN_SEQ;
1180
1181         if (retval)
1182                 goto check_error;
1183
1184         /* Print warning if e2fck will wait for more than 20 secs. */
1185         if (verbose || wait_time > EXT4_MMP_MIN_CHECK_INTERVAL * 4) {
1186                 log_out(ctx, _("MMP interval is %u seconds and total wait "
1187                                "time is %u seconds. Please wait...\n"),
1188                         mmp_check_interval, wait_time * 2);
1189         }
1190
1191         return 0;
1192
1193 check_error:
1194
1195         if (retval == EXT2_ET_MMP_BAD_BLOCK) {
1196                 if (fix_problem(ctx, PR_0_MMP_INVALID_BLK, &pctx)) {
1197                         fs->super->s_mmp_block = 0;
1198                         ext2fs_mark_super_dirty(fs);
1199                         retval = 0;
1200                 }
1201         } else if (retval == EXT2_ET_MMP_FAILED) {
1202                 com_err(ctx->program_name, retval,
1203                         _("while checking MMP block"));
1204                 dump_mmp_msg(fs->mmp_buf, NULL);
1205         } else if (retval == EXT2_ET_MMP_FSCK_ON ||
1206                    retval == EXT2_ET_MMP_UNKNOWN_SEQ) {
1207                 com_err(ctx->program_name, retval,
1208                         _("while checking MMP block"));
1209                 dump_mmp_msg(fs->mmp_buf,
1210                              _("If you are sure the filesystem is not "
1211                                "in use on any node, run:\n"
1212                                "'tune2fs -f -E clear_mmp {device}'\n"));
1213         } else if (retval == EXT2_ET_MMP_MAGIC_INVALID) {
1214                 if (fix_problem(ctx, PR_0_MMP_INVALID_MAGIC, &pctx)) {
1215                         ext2fs_mmp_clear(fs);
1216                         retval = 0;
1217                 }
1218         }
1219         return retval;
1220 }
1221
1222 int main (int argc, char *argv[])
1223 {
1224         errcode_t       retval = 0, retval2 = 0, orig_retval = 0;
1225         int             exit_value = FSCK_OK;
1226         ext2_filsys     fs = 0;
1227         io_manager      io_ptr;
1228         struct ext2_super_block *sb;
1229         const char      *lib_ver_date;
1230         int             my_ver, lib_ver;
1231         e2fsck_t        ctx;
1232         blk_t           orig_superblock;
1233         struct problem_context pctx;
1234         int flags, run_result;
1235         int journal_size;
1236         int sysval, sys_page_size = 4096;
1237         int old_bitmaps;
1238         __u32 features[3];
1239         char *cp;
1240         int qtype;  /* quota type */
1241
1242         clear_problem_context(&pctx);
1243         sigcatcher_setup();
1244 #ifdef MTRACE
1245         mtrace();
1246 #endif
1247 #ifdef MCHECK
1248         mcheck(0);
1249 #endif
1250 #ifdef ENABLE_NLS
1251         setlocale(LC_MESSAGES, "");
1252         setlocale(LC_CTYPE, "");
1253         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1254         textdomain(NLS_CAT_NAME);
1255         set_com_err_gettext(gettext);
1256 #endif
1257         my_ver = ext2fs_parse_version_string(my_ver_string);
1258         lib_ver = ext2fs_get_library_version(0, &lib_ver_date);
1259         if (my_ver > lib_ver) {
1260                 fprintf( stderr, _("Error: ext2fs library version "
1261                         "out of date!\n"));
1262                 show_version_only++;
1263         }
1264
1265         retval = PRS(argc, argv, &ctx);
1266         if (retval) {
1267                 com_err("e2fsck", retval,
1268                         _("while trying to initialize program"));
1269                 exit(FSCK_ERROR);
1270         }
1271         reserve_stdio_fds();
1272
1273         set_up_logging(ctx);
1274         if (ctx->logf) {
1275                 int i;
1276                 fputs("E2fsck run: ", ctx->logf);
1277                 for (i = 0; i < argc; i++) {
1278                         if (i)
1279                                 fputc(' ', ctx->logf);
1280                         fputs(argv[i], ctx->logf);
1281                 }
1282                 fputc('\n', ctx->logf);
1283         }
1284
1285         init_resource_track(&ctx->global_rtrack, NULL);
1286         if (!(ctx->options & E2F_OPT_PREEN) || show_version_only)
1287                 log_err(ctx, "e2fsck %s (%s)\n", my_ver_string,
1288                          my_ver_date);
1289
1290         if (show_version_only) {
1291                 log_err(ctx, _("\tUsing %s, %s\n"),
1292                         error_message(EXT2_ET_BASE), lib_ver_date);
1293                 exit(FSCK_OK);
1294         }
1295
1296         check_mount(ctx);
1297
1298         if (!(ctx->options & E2F_OPT_PREEN) &&
1299             !(ctx->options & E2F_OPT_NO) &&
1300             !(ctx->options & E2F_OPT_YES)) {
1301                 if (!ctx->interactive)
1302                         fatal_error(ctx,
1303                                     _("need terminal for interactive repairs"));
1304         }
1305         ctx->superblock = ctx->use_superblock;
1306
1307         flags = EXT2_FLAG_SKIP_MMP;
1308 restart:
1309 #ifdef CONFIG_TESTIO_DEBUG
1310         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1311                 io_ptr = test_io_manager;
1312                 test_io_backing_manager = unix_io_manager;
1313         } else
1314 #endif
1315                 io_ptr = unix_io_manager;
1316         flags |= EXT2_FLAG_NOFREE_ON_ERROR;
1317         profile_get_boolean(ctx->profile, "options", "old_bitmaps", 0, 0,
1318                             &old_bitmaps);
1319         if (!old_bitmaps)
1320                 flags |= EXT2_FLAG_64BITS;
1321         if ((ctx->options & E2F_OPT_READONLY) == 0)
1322                 flags |= EXT2_FLAG_RW | EXT2_FLAG_EXCLUSIVE;
1323
1324         retval = try_open_fs(ctx, flags, io_ptr, &fs);
1325
1326         if (!ctx->superblock && !(ctx->options & E2F_OPT_PREEN) &&
1327             !(ctx->flags & E2F_FLAG_SB_SPECIFIED) &&
1328             ((retval == EXT2_ET_BAD_MAGIC) ||
1329              (retval == EXT2_ET_CORRUPT_SUPERBLOCK) ||
1330              ((retval == 0) && (retval2 = ext2fs_check_desc(fs))))) {
1331                 if (retval) {
1332                         pctx.errcode = retval;
1333                         fix_problem(ctx, PR_0_OPEN_FAILED, &pctx);
1334                 }
1335                 if (retval2) {
1336                         pctx.errcode = retval2;
1337                         fix_problem(ctx, PR_0_CHECK_DESC_FAILED, &pctx);
1338                 }
1339                 pctx.errcode = 0;
1340                 if (retval2 == ENOMEM || retval2 == EXT2_ET_NO_MEMORY) {
1341                         retval = retval2;
1342                         goto failure;
1343                 }
1344                 if (fs->flags & EXT2_FLAG_NOFREE_ON_ERROR) {
1345                         ext2fs_free(fs);
1346                         fs = NULL;
1347                 }
1348                 if (!fs || (fs->group_desc_count > 1)) {
1349                         log_out(ctx, _("%s: %s trying backup blocks...\n"),
1350                                 ctx->program_name,
1351                                 retval ? _("Superblock invalid,") :
1352                                 _("Group descriptors look bad..."));
1353                         orig_superblock = ctx->superblock;
1354                         get_backup_sb(ctx, fs, ctx->filesystem_name, io_ptr);
1355                         if (fs)
1356                                 ext2fs_close(fs);
1357                         orig_retval = retval;
1358                         retval = try_open_fs(ctx, flags, io_ptr, &fs);
1359                         if ((orig_retval == 0) && retval != 0) {
1360                                 if (fs)
1361                                         ext2fs_close(fs);
1362                                 log_out(ctx, _("%s: %s while using the "
1363                                                "backup blocks"),
1364                                         ctx->program_name,
1365                                         error_message(retval));
1366                                 log_out(ctx, _("%s: going back to original "
1367                                                "superblock\n"),
1368                                         ctx->program_name);
1369                                 ctx->superblock = orig_superblock;
1370                                 retval = try_open_fs(ctx, flags, io_ptr, &fs);
1371                         }
1372                 }
1373         }
1374         if (((retval == EXT2_ET_UNSUPP_FEATURE) ||
1375              (retval == EXT2_ET_RO_UNSUPP_FEATURE)) &&
1376             fs && fs->super) {
1377                 sb = fs->super;
1378                 features[0] = (sb->s_feature_compat &
1379                                ~EXT2_LIB_FEATURE_COMPAT_SUPP);
1380                 features[1] = (sb->s_feature_incompat &
1381                                ~EXT2_LIB_FEATURE_INCOMPAT_SUPP);
1382                 features[2] = (sb->s_feature_ro_compat &
1383                                ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
1384                 if (features[0] || features[1] || features[2])
1385                         goto print_unsupp_features;
1386         }
1387 failure:
1388         if (retval) {
1389                 if (orig_retval)
1390                         retval = orig_retval;
1391                 com_err(ctx->program_name, retval, _("while trying to open %s"),
1392                         ctx->filesystem_name);
1393                 if (retval == EXT2_ET_REV_TOO_HIGH) {
1394                         log_out(ctx, _("The filesystem revision is apparently "
1395                                "too high for this version of e2fsck.\n"
1396                                "(Or the filesystem superblock "
1397                                "is corrupt)\n\n"));
1398                         fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
1399                 } else if (retval == EXT2_ET_SHORT_READ)
1400                         log_out(ctx, _("Could this be a zero-length "
1401                                        "partition?\n"));
1402                 else if ((retval == EPERM) || (retval == EACCES))
1403                         log_out(ctx, _("You must have %s access to the "
1404                                "filesystem or be root\n"),
1405                                (ctx->options & E2F_OPT_READONLY) ?
1406                                "r/o" : "r/w");
1407                 else if (retval == ENXIO)
1408                         log_out(ctx, _("Possibly non-existent or "
1409                                        "swap device?\n"));
1410                 else if (retval == EBUSY)
1411                         log_out(ctx, _("Filesystem mounted or opened "
1412                                  "exclusively by another program?\n"));
1413                 else if (retval == ENOENT)
1414                         log_out(ctx, _("Possibly non-existent device?\n"));
1415 #ifdef EROFS
1416                 else if (retval == EROFS)
1417                         log_out(ctx, _("Disk write-protected; use the -n "
1418                                        "option to do a read-only\n"
1419                                        "check of the device.\n"));
1420 #endif
1421                 else
1422                         fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
1423                 fatal_error(ctx, 0);
1424         }
1425         /*
1426          * We only update the master superblock because (a) paranoia;
1427          * we don't want to corrupt the backup superblocks, and (b) we
1428          * don't need to update the mount count and last checked
1429          * fields in the backup superblock (the kernel doesn't update
1430          * the backup superblocks anyway).  With newer versions of the
1431          * library this flag is set by ext2fs_open2(), but we set this
1432          * here just to be sure.  (No, we don't support e2fsck running
1433          * with some other libext2fs than the one that it was shipped
1434          * with, but just in case....)
1435          */
1436         fs->flags |= EXT2_FLAG_MASTER_SB_ONLY;
1437
1438         if (!(ctx->flags & E2F_FLAG_GOT_DEVSIZE)) {
1439                 __u32 blocksize = EXT2_BLOCK_SIZE(fs->super);
1440                 int need_restart = 0;
1441
1442                 pctx.errcode = ext2fs_get_device_size2(ctx->filesystem_name,
1443                                                        blocksize,
1444                                                        &ctx->num_blocks);
1445                 /*
1446                  * The floppy driver refuses to allow anyone else to
1447                  * open the device if has been opened with O_EXCL;
1448                  * this is unlike other block device drivers in Linux.
1449                  * To handle this, we close the filesystem and then
1450                  * reopen the filesystem after we get the device size.
1451                  */
1452                 if (pctx.errcode == EBUSY) {
1453                         ext2fs_close(fs);
1454                         need_restart++;
1455                         pctx.errcode =
1456                                 ext2fs_get_device_size2(ctx->filesystem_name,
1457                                                         blocksize,
1458                                                         &ctx->num_blocks);
1459                 }
1460                 if (pctx.errcode == EXT2_ET_UNIMPLEMENTED)
1461                         ctx->num_blocks = 0;
1462                 else if (pctx.errcode) {
1463                         fix_problem(ctx, PR_0_GETSIZE_ERROR, &pctx);
1464                         ctx->flags |= E2F_FLAG_ABORT;
1465                         fatal_error(ctx, 0);
1466                 }
1467                 ctx->flags |= E2F_FLAG_GOT_DEVSIZE;
1468                 if (need_restart)
1469                         goto restart;
1470         }
1471
1472         ctx->fs = fs;
1473         fs->priv_data = ctx;
1474         fs->now = ctx->now;
1475         sb = fs->super;
1476
1477         if (sb->s_rev_level > E2FSCK_CURRENT_REV) {
1478                 com_err(ctx->program_name, EXT2_ET_REV_TOO_HIGH,
1479                         _("while trying to open %s"),
1480                         ctx->filesystem_name);
1481         get_newer:
1482                 fatal_error(ctx, _("Get a newer version of e2fsck!"));
1483         }
1484
1485         /*
1486          * Set the device name, which is used whenever we print error
1487          * or informational messages to the user.
1488          */
1489         if (ctx->device_name == 0 &&
1490             (sb->s_volume_name[0] != 0)) {
1491                 ctx->device_name = string_copy(ctx, sb->s_volume_name,
1492                                                sizeof(sb->s_volume_name));
1493         }
1494         if (ctx->device_name == 0)
1495                 ctx->device_name = string_copy(ctx, ctx->filesystem_name, 0);
1496         for (cp = ctx->device_name; *cp; cp++)
1497                 if (isspace(*cp) || *cp == ':')
1498                         *cp = '_';
1499
1500         ehandler_init(fs->io);
1501
1502         if ((fs->super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_MMP) &&
1503             (flags & EXT2_FLAG_SKIP_MMP)) {
1504                 if (e2fsck_check_mmp(fs, ctx))
1505                         fatal_error(ctx, 0);
1506
1507                 /*
1508                  * Restart in order to reopen fs but this time start mmp.
1509                  */
1510                 ext2fs_close(fs);
1511                 ctx->fs = NULL;
1512                 flags &= ~EXT2_FLAG_SKIP_MMP;
1513                 goto restart;
1514         }
1515
1516         if (ctx->logf)
1517                 fprintf(ctx->logf, "Filesystem UUID: %s\n",
1518                         e2p_uuid2str(sb->s_uuid));
1519
1520         if ((ctx->mount_flags & EXT2_MF_MOUNTED) &&
1521             !(sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER))
1522                 goto skip_journal;
1523
1524         /*
1525          * Make sure the ext3 superblock fields are consistent.
1526          */
1527         retval = e2fsck_check_ext3_journal(ctx);
1528         if (retval) {
1529                 com_err(ctx->program_name, retval,
1530                         _("while checking ext3 journal for %s"),
1531                         ctx->device_name);
1532                 fatal_error(ctx, 0);
1533         }
1534
1535         /*
1536          * Check to see if we need to do ext3-style recovery.  If so,
1537          * do it, and then restart the fsck.
1538          */
1539         if (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_RECOVER) {
1540                 if (ctx->options & E2F_OPT_READONLY) {
1541                         log_out(ctx, _("Warning: skipping journal recovery "
1542                                        "because doing a read-only filesystem "
1543                                        "check.\n"));
1544                         io_channel_flush(ctx->fs->io);
1545                 } else {
1546                         if (ctx->flags & E2F_FLAG_RESTARTED) {
1547                                 /*
1548                                  * Whoops, we attempted to run the
1549                                  * journal twice.  This should never
1550                                  * happen, unless the hardware or
1551                                  * device driver is being bogus.
1552                                  */
1553                                 com_err(ctx->program_name, 0,
1554                                         _("unable to set superblock flags on %s\n"), ctx->device_name);
1555                                 fatal_error(ctx, 0);
1556                         }
1557                         retval = e2fsck_run_ext3_journal(ctx);
1558                         if (retval) {
1559                                 com_err(ctx->program_name, retval,
1560                                 _("while recovering ext3 journal of %s"),
1561                                         ctx->device_name);
1562                                 fatal_error(ctx, 0);
1563                         }
1564                         ext2fs_close(ctx->fs);
1565                         ctx->fs = 0;
1566                         ctx->flags |= E2F_FLAG_RESTARTED;
1567                         goto restart;
1568                 }
1569         }
1570
1571 skip_journal:
1572         /*
1573          * Check for compatibility with the feature sets.  We need to
1574          * be more stringent than ext2fs_open().
1575          */
1576         features[0] = sb->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP;
1577         features[1] = sb->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP;
1578         features[2] = (sb->s_feature_ro_compat &
1579                        ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
1580 print_unsupp_features:
1581         if (features[0] || features[1] || features[2]) {
1582                 int     i, j;
1583                 __u32   *mask = features, m;
1584
1585                 log_err(ctx, _("%s has unsupported feature(s):"),
1586                         ctx->filesystem_name);
1587
1588                 for (i=0; i <3; i++,mask++) {
1589                         for (j=0,m=1; j < 32; j++, m<<=1) {
1590                                 if (*mask & m)
1591                                         log_err(ctx, " %s",
1592                                                 e2p_feature2string(i, m));
1593                         }
1594                 }
1595                 log_err(ctx, "\n");
1596                 goto get_newer;
1597         }
1598 #ifdef ENABLE_COMPRESSION
1599         if (sb->s_feature_incompat & EXT2_FEATURE_INCOMPAT_COMPRESSION)
1600                 log_err(ctx, _("%s: warning: compression support "
1601                                "is experimental.\n"),
1602                         ctx->program_name);
1603 #endif
1604 #ifndef ENABLE_HTREE
1605         if (sb->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) {
1606                 log_err(ctx, _("%s: e2fsck not compiled with HTREE support,\n\t"
1607                           "but filesystem %s has HTREE directories.\n"),
1608                         ctx->program_name, ctx->device_name);
1609                 goto get_newer;
1610         }
1611 #endif
1612
1613         /*
1614          * If the user specified a specific superblock, presumably the
1615          * master superblock has been trashed.  So we mark the
1616          * superblock as dirty, so it can be written out.
1617          */
1618         if (ctx->superblock &&
1619             !(ctx->options & E2F_OPT_READONLY))
1620                 ext2fs_mark_super_dirty(fs);
1621
1622         /*
1623          * Calculate the number of filesystem blocks per pagesize.  If
1624          * fs->blocksize > page_size, set the number of blocks per
1625          * pagesize to 1 to avoid division by zero errors.
1626          */
1627 #ifdef _SC_PAGESIZE
1628         sysval = sysconf(_SC_PAGESIZE);
1629         if (sysval > 0)
1630                 sys_page_size = sysval;
1631 #endif /* _SC_PAGESIZE */
1632         ctx->blocks_per_page = sys_page_size / fs->blocksize;
1633         if (ctx->blocks_per_page == 0)
1634                 ctx->blocks_per_page = 1;
1635
1636         if (ctx->superblock)
1637                 set_latch_flags(PR_LATCH_RELOC, PRL_LATCHED, 0);
1638         ext2fs_mark_valid(fs);
1639         check_super_block(ctx);
1640         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1641                 fatal_error(ctx, 0);
1642         check_if_skip(ctx);
1643
1644         if (EXT2_GOOD_OLD_INODE_SIZE + sb->s_want_extra_isize >
1645                                                         EXT2_INODE_SIZE(sb)) {
1646                 if (fix_problem(ctx, PR_0_WANT_EXTRA_ISIZE_INVALID, &pctx))
1647                         sb->s_want_extra_isize =
1648                                 sizeof(struct ext2_inode_large) -
1649                                 EXT2_GOOD_OLD_INODE_SIZE;
1650         }
1651         if (EXT2_GOOD_OLD_INODE_SIZE + sb->s_min_extra_isize >
1652                                                         EXT2_INODE_SIZE(sb)) {
1653                 if (fix_problem(ctx, PR_0_MIN_EXTRA_ISIZE_INVALID, &pctx))
1654                         sb->s_min_extra_isize = 0;
1655         }
1656         if (EXT2_INODE_SIZE(sb) > EXT2_GOOD_OLD_INODE_SIZE) {
1657                 ctx->want_extra_isize = sizeof(struct ext2_inode_large) -
1658                                                      EXT2_GOOD_OLD_INODE_SIZE;
1659                 ctx->min_extra_isize = ~0L;
1660                 if (EXT2_HAS_RO_COMPAT_FEATURE(sb,
1661                                        EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE)) {
1662                         if (ctx->want_extra_isize < sb->s_want_extra_isize)
1663                                 ctx->want_extra_isize = sb->s_want_extra_isize;
1664                         if (ctx->want_extra_isize < sb->s_min_extra_isize)
1665                                 ctx->want_extra_isize = sb->s_min_extra_isize;
1666                 }
1667         } else {
1668                 if (sb->s_feature_ro_compat &
1669                     EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE) {
1670                         fix_problem(ctx, PR_0_CLEAR_EXTRA_ISIZE, &pctx);
1671                         sb->s_feature_ro_compat &=
1672                                         ~EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE;
1673                 }
1674                 sb->s_want_extra_isize = 0;
1675                 sb->s_min_extra_isize = 0;
1676                 ctx->flags &= ~E2F_FLAG_EXPAND_EISIZE;
1677         }
1678
1679         if (ctx->options & E2F_OPT_READONLY) {
1680                 if (ctx->flags & (E2F_FLAG_EXPAND_EISIZE)) {
1681                         fprintf(stderr, _("Cannot enable EXTRA_ISIZE feature "
1682                                           "on read-only filesystem\n"));
1683                         exit(1);
1684                 }
1685         } else {
1686                 if (sb->s_want_extra_isize > sb->s_min_extra_isize &&
1687                     (sb->s_feature_ro_compat &
1688                      EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE))
1689                         ctx->flags |= E2F_FLAG_EXPAND_EISIZE;
1690         }
1691
1692         check_resize_inode(ctx);
1693         if (bad_blocks_file)
1694                 read_bad_blocks_file(ctx, bad_blocks_file, replace_bad_blocks);
1695         else if (cflag)
1696                 read_bad_blocks_file(ctx, 0, !keep_bad_blocks); /* Test disk */
1697         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1698                 fatal_error(ctx, 0);
1699
1700         /*
1701          * Mark the system as valid, 'til proven otherwise
1702          */
1703         ext2fs_mark_valid(fs);
1704
1705         retval = ext2fs_read_bb_inode(fs, &fs->badblocks);
1706         if (retval) {
1707                 log_out(ctx, _("%s: %s while reading bad blocks inode\n"),
1708                         ctx->program_name, error_message(retval));
1709                 preenhalt(ctx);
1710                 log_out(ctx, _("This doesn't bode well, "
1711                                "but we'll try to go on...\n"));
1712         }
1713
1714         /*
1715          * Save the journal size in megabytes.
1716          * Try and use the journal size from the backup else let e2fsck
1717          * find the default journal size.
1718          */
1719         if (sb->s_jnl_backup_type == EXT3_JNL_BACKUP_BLOCKS)
1720                 journal_size = (sb->s_jnl_blocks[15] << (32 - 20)) |
1721                                (sb->s_jnl_blocks[16] >> 20);
1722         else
1723                 journal_size = -1;
1724
1725         if (sb->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_QUOTA) {
1726                 /* Quotas were enabled. Do quota accounting during fsck. */
1727                 if ((sb->s_usr_quota_inum && sb->s_grp_quota_inum) ||
1728                     (!sb->s_usr_quota_inum && !sb->s_grp_quota_inum))
1729                         qtype = -1;
1730                 else
1731                         qtype = sb->s_usr_quota_inum ? USRQUOTA : GRPQUOTA;
1732
1733                 quota_init_context(&ctx->qctx, ctx->fs, qtype);
1734         }
1735
1736         run_result = e2fsck_run(ctx);
1737         e2fsck_clear_progbar(ctx);
1738
1739         if (ctx->flags & E2F_FLAG_JOURNAL_INODE) {
1740                 if (fix_problem(ctx, PR_6_RECREATE_JOURNAL, &pctx)) {
1741                         if (journal_size < 1024)
1742                                 journal_size = ext2fs_default_journal_size(ext2fs_blocks_count(fs->super));
1743                         if (journal_size < 0) {
1744                                 fs->super->s_feature_compat &=
1745                                         ~EXT3_FEATURE_COMPAT_HAS_JOURNAL;
1746                                 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1747                                 log_out(ctx, "%s: Couldn't determine "
1748                                         "journal size\n", ctx->program_name);
1749                                 goto no_journal;
1750                         }
1751                         log_out(ctx, _("Creating journal (%d blocks): "),
1752                                journal_size);
1753                         fflush(stdout);
1754                         retval = ext2fs_add_journal_inode(fs,
1755                                                           journal_size, 0);
1756                         if (retval) {
1757                                 log_out(ctx, "%s: while trying to create "
1758                                         "journal\n", error_message(retval));
1759                                 goto no_journal;
1760                         }
1761                         log_out(ctx, _(" Done.\n"));
1762                         log_out(ctx, _("\n*** journal has been re-created - "
1763                                        "filesystem is now ext3 again ***\n"));
1764                 }
1765         }
1766 no_journal:
1767
1768         if (ctx->qctx) {
1769                 int i, needs_writeout;
1770                 for (i = 0; i < MAXQUOTAS; i++) {
1771                         if (qtype != -1 && qtype != i)
1772                                 continue;
1773                         needs_writeout = 0;
1774                         pctx.num = i;
1775                         retval = quota_compare_and_update(ctx->qctx, i,
1776                                                           &needs_writeout);
1777                         if ((retval || needs_writeout) &&
1778                             fix_problem(ctx, PR_6_UPDATE_QUOTAS, &pctx))
1779                                 quota_write_inode(ctx->qctx, i);
1780                 }
1781                 quota_release_context(&ctx->qctx);
1782         }
1783
1784         if (run_result == E2F_FLAG_RESTART) {
1785                 log_out(ctx, _("Restarting e2fsck from the beginning...\n"));
1786                 retval = e2fsck_reset_context(ctx);
1787                 if (retval) {
1788                         com_err(ctx->program_name, retval,
1789                                 _("while resetting context"));
1790                         fatal_error(ctx, 0);
1791                 }
1792                 ext2fs_close(fs);
1793                 goto restart;
1794         }
1795         if (run_result & E2F_FLAG_CANCEL) {
1796                 log_out(ctx, _("%s: e2fsck canceled.\n"), ctx->device_name ?
1797                         ctx->device_name : ctx->filesystem_name);
1798                 exit_value |= FSCK_CANCELED;
1799         }
1800         if (run_result & E2F_FLAG_ABORT)
1801                 fatal_error(ctx, _("aborted"));
1802         if (check_backup_super_block(ctx)) {
1803                 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1804                 ext2fs_mark_super_dirty(fs);
1805         }
1806
1807 #ifdef MTRACE
1808         mtrace_print("Cleanup");
1809 #endif
1810         if (ext2fs_test_changed(fs)) {
1811                 exit_value |= FSCK_NONDESTRUCT;
1812                 if (!(ctx->options & E2F_OPT_PREEN))
1813                         log_out(ctx, _("\n%s: ***** FILE SYSTEM WAS "
1814                                        "MODIFIED *****\n"),
1815                                 ctx->device_name);
1816                 if (ctx->mount_flags & EXT2_MF_ISROOT) {
1817                         log_out(ctx, _("%s: ***** REBOOT LINUX *****\n"),
1818                                 ctx->device_name);
1819                         exit_value |= FSCK_REBOOT;
1820                 }
1821         }
1822         if (!ext2fs_test_valid(fs) ||
1823             ((exit_value & FSCK_CANCELED) &&
1824              (sb->s_state & EXT2_ERROR_FS))) {
1825                 log_out(ctx, _("\n%s: ********** WARNING: Filesystem still has "
1826                                "errors **********\n\n"), ctx->device_name);
1827                 exit_value |= FSCK_UNCORRECTED;
1828                 exit_value &= ~FSCK_NONDESTRUCT;
1829         }
1830         if (exit_value & FSCK_CANCELED) {
1831                 int     allow_cancellation;
1832
1833                 profile_get_boolean(ctx->profile, "options",
1834                                     "allow_cancellation", 0, 0,
1835                                     &allow_cancellation);
1836                 exit_value &= ~FSCK_NONDESTRUCT;
1837                 if (allow_cancellation && ext2fs_test_valid(fs) &&
1838                     (sb->s_state & EXT2_VALID_FS) &&
1839                     !(sb->s_state & EXT2_ERROR_FS))
1840                         exit_value = 0;
1841         } else {
1842                 show_stats(ctx);
1843                 if (!(ctx->options & E2F_OPT_READONLY)) {
1844                         if (ext2fs_test_valid(fs)) {
1845                                 if (!(sb->s_state & EXT2_VALID_FS))
1846                                         exit_value |= FSCK_NONDESTRUCT;
1847                                 sb->s_state = EXT2_VALID_FS;
1848                         } else
1849                                 sb->s_state &= ~EXT2_VALID_FS;
1850                         sb->s_mnt_count = 0;
1851                         if (!(ctx->flags & E2F_FLAG_TIME_INSANE))
1852                                 sb->s_lastcheck = ctx->now;
1853                         memset(((char *) sb) + EXT4_S_ERR_START, 0,
1854                                EXT4_S_ERR_LEN);
1855                         ext2fs_mark_super_dirty(fs);
1856                 }
1857         }
1858
1859         if ((run_result & E2F_FLAG_CANCEL) == 0 &&
1860             sb->s_feature_ro_compat & EXT4_FEATURE_RO_COMPAT_GDT_CSUM &&
1861             !(ctx->options & E2F_OPT_READONLY)) {
1862                 retval = ext2fs_set_gdt_csum(ctx->fs);
1863                 if (retval) {
1864                         com_err(ctx->program_name, retval,
1865                                 _("while setting block group checksum info"));
1866                         fatal_error(ctx, 0);
1867                 }
1868         }
1869
1870         e2fsck_write_bitmaps(ctx);
1871         io_channel_flush(ctx->fs->io);
1872         print_resource_track(ctx, NULL, &ctx->global_rtrack, ctx->fs->io);
1873
1874         ext2fs_close(fs);
1875         ctx->fs = NULL;
1876         free(ctx->journal_name);
1877
1878         e2fsck_free_context(ctx);
1879         remove_error_table(&et_ext2_error_table);
1880         remove_error_table(&et_prof_error_table);
1881         return exit_value;
1882 }