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                         blocks_used, blocks);
 142                 return;
 143         }
 144         profile_get_boolean(ctx->profile, "options", "report_features", 0, 0,
 145                             &i);
 146         if (verbose && i) {
 147                 log_out(ctx, "\nFilesystem features:");
 148                 mask = &ctx->fs->super->s_feature_compat;
 149                 for (i = 0; i < 3; i++, mask++) {
 150                         for (j = 0, m = 1; j < 32; j++, m <<= 1) {
 151                                 if (*mask & m) {
 152                                         log_out(ctx, " %s",
 153                                                 e2p_feature2string(i, m));
 154                                         printed++;
 155                                 }
 156                         }
 157                 }
 158                 if (printed == 0)
 159                         log_out(ctx, " (none)");
 160                 log_out(ctx, "\n");
 161         }
 162
 163         log_out(ctx, P_("\n%12u inode used (%2.2f%%, out of %u)\n",
 164                         "\n%12u inodes used (%2.2f%%, out of %u)\n",
 165                         inodes_used), inodes_used,
 166                 100.0 * inodes_used / inodes, inodes);
 167         log_out(ctx, P_("%12u non-contiguous file (%0d.%d%%)\n",
 168                         "%12u non-contiguous files (%0d.%d%%)\n",
 169                         ctx->fs_fragmented),
 170                 ctx->fs_fragmented, frag_percent_file / 10,
 171                 frag_percent_file % 10);
 172         log_out(ctx, P_("%12u non-contiguous directory (%0d.%d%%)\n",
 173                         "%12u non-contiguous directories (%0d.%d%%)\n",
 174                         ctx->fs_fragmented_dir),
 175                 ctx->fs_fragmented_dir, frag_percent_dir / 10,
 176                 frag_percent_dir % 10);
 177         log_out(ctx, _("             # of inodes with ind/dind/tind blocks: "
 178                        "%u/%u/%u\n"),
 179                 ctx->fs_ind_count, ctx->fs_dind_count, ctx->fs_tind_count);
 180
 181         for (j=MAX_EXTENT_DEPTH_COUNT-1; j >=0; j--)
 182                 if (ctx->extent_depth_count[j])
 183                         break;
 184         if (++j) {
 185                 log_out(ctx, "%s", _("             Extent depth histogram: "));
 186                 for (i=0; i < j; i++) {
 187                         if (i)
 188                                 fputc('/', stdout);
 189                         log_out(ctx, "%u", ctx->extent_depth_count[i]);
 190                 }
 191                 log_out(ctx, "\n");
 192         }
 193
 194         log_out(ctx, P_("%12llu block used (%2.2f%%, out of %llu)\n",
 195                         "%12llu blocks used (%2.2f%%, out of %llu)\n",
 196                    blocks_used),
 197                 blocks_used, 100.0 * blocks_used / blocks, blocks);
 198         log_out(ctx, P_("%12u bad block\n", "%12u bad blocks\n",
 199                         ctx->fs_badblocks_count), ctx->fs_badblocks_count);
 200         log_out(ctx, P_("%12u large file\n", "%12u large files\n",
 201                         ctx->large_files), ctx->large_files);
 202         log_out(ctx, P_("\n%12u regular file\n", "\n%12u regular files\n",
 203                         ctx->fs_regular_count), ctx->fs_regular_count);
 204         log_out(ctx, P_("%12u directory\n", "%12u directories\n",
 205                         ctx->fs_directory_count), ctx->fs_directory_count);
 206         log_out(ctx, P_("%12u character device file\n",
 207                         "%12u character device files\n", ctx->fs_chardev_count),
 208                 ctx->fs_chardev_count);
 209         log_out(ctx, P_("%12u block device file\n", "%12u block device files\n",
 210                         ctx->fs_blockdev_count), ctx->fs_blockdev_count);
 211         log_out(ctx, P_("%12u fifo\n", "%12u fifos\n", ctx->fs_fifo_count),
 212                 ctx->fs_fifo_count);
 213         log_out(ctx, P_("%12u link\n", "%12u links\n", num_links),
 214                 ctx->fs_links_count - dir_links);
 215         log_out(ctx, P_("%12u symbolic link", "%12u symbolic links",
 216                         ctx->fs_symlinks_count), ctx->fs_symlinks_count);
 217         log_out(ctx, P_(" (%u fast symbolic link)\n",
 218                         " (%u fast symbolic links)\n",
 219                         ctx->fs_fast_symlinks_count),
 220                 ctx->fs_fast_symlinks_count);
 221         log_out(ctx, P_("%12u socket\n", "%12u sockets\n",
 222                         ctx->fs_sockets_count),
 223                 ctx->fs_sockets_count);
 224         log_out(ctx, "------------\n");
 225         log_out(ctx, P_("%12u file\n", "%12u files\n", num_files),
 226                 num_files);
 227 }
 228
 229 static void check_mount(e2fsck_t ctx)
 230 {
 231         errcode_t       retval;
 232         int             cont;
 233
 234         retval = ext2fs_check_if_mounted(ctx->filesystem_name,
 235                                          &ctx->mount_flags);
 236         if (retval) {
 237                 com_err("ext2fs_check_if_mount", retval,
 238                         _("while determining whether %s is mounted."),
 239                         ctx->filesystem_name);
 240                 return;
 241         }
 242
 243         /*
 244          * If the filesystem isn't mounted, or it's the root
 245          * filesystem and it's mounted read-only, and we're not doing
 246          * a read/write check, then everything's fine.
 247          */
 248         if ((!(ctx->mount_flags & (EXT2_MF_MOUNTED | EXT2_MF_BUSY))) ||
 249             ((ctx->mount_flags & EXT2_MF_ISROOT) &&
 250              (ctx->mount_flags & EXT2_MF_READONLY) &&
 251              !(ctx->options & E2F_OPT_WRITECHECK)))
 252                 return;
 253
 254         if (((ctx->options & E2F_OPT_READONLY) ||
 255              ((ctx->options & E2F_OPT_FORCE) &&
 256               (ctx->mount_flags & EXT2_MF_READONLY))) &&
 257             !(ctx->options & E2F_OPT_WRITECHECK)) {
 258                 if (ctx->mount_flags & EXT2_MF_MOUNTED)
 259                         log_out(ctx, _("Warning!  %s is mounted.\n"),
 260                                         ctx->filesystem_name);
 261                 else
 262                         log_out(ctx, _("Warning!  %s is in use.\n"),
 263                                         ctx->filesystem_name);
 264                 return;
 265         }
 266
 267         if (ctx->mount_flags & EXT2_MF_MOUNTED)
 268                 log_out(ctx, _("%s is mounted.\n"), ctx->filesystem_name);
 269         else
 270                 log_out(ctx, _("%s is in use.\n"), ctx->filesystem_name);
 271         if (!ctx->interactive || ctx->mount_flags & EXT2_MF_BUSY)
 272                 fatal_error(ctx, _("Cannot continue, aborting.\n\n"));
 273         puts("\007\007\007\007");
 274         log_out(ctx, "%s", _("\n\nWARNING!!!  "
 275                        "The filesystem is mounted.   "
 276                        "If you continue you ***WILL***\n"
 277                        "cause ***SEVERE*** filesystem damage.\n\n"));
 278         puts("\007\007\007");
 279         cont = ask_yn(ctx, _("Do you really want to continue"), 0);
 280         if (!cont) {
 281                 printf("%s", _("check aborted.\n"));
 282                 exit (0);
 283         }
 284         return;
 285 }
 286
 287 static int is_on_batt(void)
 288 {
 289         FILE    *f;
 290         DIR     *d;
 291         char    tmp[80], tmp2[80], fname[NAME_MAX+30];
 292         unsigned int    acflag;
 293         struct dirent*  de;
 294
 295         f = fopen("/sys/class/power_supply/AC/online", "r");
 296         if (f) {
 297                 if (fscanf(f, "%u\n", &acflag) == 1) {
 298                         fclose(f);
 299                         return (!acflag);
 300                 }
 301                 fclose(f);
 302         }
 303         f = fopen("/proc/apm", "r");
 304         if (f) {
 305                 if (fscanf(f, "%s %s %s %x", tmp, tmp, tmp, &acflag) != 4)
 306                         acflag = 1;
 307                 fclose(f);
 308                 return (acflag != 1);
 309         }
 310         d = opendir("/proc/acpi/ac_adapter");
 311         if (d) {
 312                 while ((de=readdir(d)) != NULL) {
 313                         if (!strncmp(".", de->d_name, 1))
 314                                 continue;
 315                         snprintf(fname, sizeof(fname),
 316                                  "/proc/acpi/ac_adapter/%s/state",
 317                                  de->d_name);
 318                         f = fopen(fname, "r");
 319                         if (!f)
 320                                 continue;
 321                         if (fscanf(f, "%s %s", tmp2, tmp) != 2)
 322                                 tmp[0] = 0;
 323                         fclose(f);
 324                         if (strncmp(tmp, "off-line", 8) == 0) {
 325                                 closedir(d);
 326                                 return 1;
 327                         }
 328                 }
 329                 closedir(d);
 330         }
 331         return 0;
 332 }
 333
 334 /*
 335  * This routine checks to see if a filesystem can be skipped; if so,
 336  * it will exit with E2FSCK_OK.  Under some conditions it will print a
 337  * message explaining why a check is being forced.
 338  */
 339 static void check_if_skip(e2fsck_t ctx)
 340 {
 341         ext2_filsys fs = ctx->fs;
 342         struct problem_context pctx;
 343         const char *reason = NULL;
 344         unsigned int reason_arg = 0;
 345         long next_check;
 346         int batt = is_on_batt();
 347         int defer_check_on_battery;
 348         int broken_system_clock;
 349         time_t lastcheck;
 350
 351         if (ctx->flags & E2F_FLAG_PROBLEMS_FIXED)
 352                 return;
 353
 354         profile_get_boolean(ctx->profile, "options", "broken_system_clock",
 355                             0, 0, &broken_system_clock);
 356         if (ctx->flags & E2F_FLAG_TIME_INSANE)
 357                 broken_system_clock = 1;
 358         profile_get_boolean(ctx->profile, "options",
 359                             "defer_check_on_battery", 0, 1,
 360                             &defer_check_on_battery);
 361         if (!defer_check_on_battery)
 362                 batt = 0;
 363
 364         if ((ctx->options & E2F_OPT_FORCE) || bad_blocks_file || cflag)
 365                 return;
 366
 367         if (ctx->options & E2F_OPT_JOURNAL_ONLY)
 368                 goto skip;
 369
 370         lastcheck = fs->super->s_lastcheck;
 371         if (lastcheck > ctx->now)
 372                 lastcheck -= ctx->time_fudge;
 373         if ((fs->super->s_state & EXT2_ERROR_FS) ||
 374             !ext2fs_test_valid(fs))
 375                 reason = _(" contains a file system with errors");
 376         else if ((fs->super->s_state & EXT2_VALID_FS) == 0)
 377                 reason = _(" was not cleanly unmounted");
 378         else if (check_backup_super_block(ctx))
 379                 reason = _(" primary superblock features different from backup");
 380         else if ((fs->super->s_max_mnt_count > 0) &&
 381                  (fs->super->s_mnt_count >=
 382                   (unsigned) fs->super->s_max_mnt_count)) {
 383                 reason = _(" has been mounted %u times without being checked");
 384                 reason_arg = fs->super->s_mnt_count;
 385                 if (batt && (fs->super->s_mnt_count <
 386                              (unsigned) fs->super->s_max_mnt_count*2))
 387                         reason = 0;
 388         } else if (!broken_system_clock && fs->super->s_checkinterval &&
 389                    (ctx->now < lastcheck)) {
 390                 reason = _(" has filesystem last checked time in the future");
 391                 if (batt)
 392                         reason = 0;
 393         } else if (!broken_system_clock && fs->super->s_checkinterval &&
 394                    ((ctx->now - lastcheck) >=
 395                     ((time_t) fs->super->s_checkinterval))) {
 396                 reason = _(" has gone %u days without being checked");
 397                 reason_arg = (ctx->now - fs->super->s_lastcheck)/(3600*24);
 398                 if (batt && ((ctx->now - fs->super->s_lastcheck) <
 399                              fs->super->s_checkinterval*2))
 400                         reason = 0;
 401         } else if (broken_system_clock && fs->super->s_checkinterval) {
 402                 log_out(ctx, "%s: ", ctx->device_name);
 403                 log_out(ctx, "%s",
 404                         _("ignoring check interval, broken_system_clock set\n"));
 405         }
 406
 407         if (reason) {
 408                 log_out(ctx, "%s", ctx->device_name);
 409                 log_out(ctx, reason, reason_arg);
 410                 log_out(ctx, "%s", _(", check forced.\n"));
 411                 return;
 412         }
 413
 414         /*
 415          * Update the global counts from the block group counts.  This
 416          * is needed since modern kernels don't update the global
 417          * counts so as to avoid locking the entire file system.  So
 418          * if the filesystem is not unmounted cleanly, the global
 419          * counts may not be accurate.  Update them here if we can,
 420          * for the benefit of users who might examine the file system
 421          * using dumpe2fs.  (This is for cosmetic reasons only.)
 422          */
 423         clear_problem_context(&pctx);
 424         pctx.ino = fs->super->s_free_inodes_count;
 425         pctx.ino2 = ctx->free_inodes;
 426         if ((pctx.ino != pctx.ino2) &&
 427             !(ctx->options & E2F_OPT_READONLY) &&
 428             fix_problem(ctx, PR_0_FREE_INODE_COUNT, &pctx)) {
 429                 fs->super->s_free_inodes_count = ctx->free_inodes;
 430                 ext2fs_mark_super_dirty(fs);
 431         }
 432         clear_problem_context(&pctx);
 433         pctx.blk = ext2fs_free_blocks_count(fs->super);
 434         pctx.blk2 = ctx->free_blocks;
 435         if ((pctx.blk != pctx.blk2) &&
 436             !(ctx->options & E2F_OPT_READONLY) &&
 437             fix_problem(ctx, PR_0_FREE_BLOCK_COUNT, &pctx)) {
 438                 ext2fs_free_blocks_count_set(fs->super, ctx->free_blocks);
 439                 ext2fs_mark_super_dirty(fs);
 440         }
 441
 442         /* Print the summary message when we're skipping a full check */
 443         log_out(ctx, _("%s: clean, %u/%u files, %llu/%llu blocks"),
 444                 ctx->device_name,
 445                 fs->super->s_inodes_count - fs->super->s_free_inodes_count,
 446                 fs->super->s_inodes_count,
 447                 ext2fs_blocks_count(fs->super) -
 448                 ext2fs_free_blocks_count(fs->super),
 449                 ext2fs_blocks_count(fs->super));
 450         next_check = 100000;
 451         if (fs->super->s_max_mnt_count > 0) {
 452                 next_check = fs->super->s_max_mnt_count - fs->super->s_mnt_count;
 453                 if (next_check <= 0)
 454                         next_check = 1;
 455         }
 456         if (!broken_system_clock && fs->super->s_checkinterval &&
 457             ((ctx->now - fs->super->s_lastcheck) >= fs->super->s_checkinterval))
 458                 next_check = 1;
 459         if (next_check <= 5) {
 460                 if (next_check == 1) {
 461                         if (batt)
 462                                 log_out(ctx, "%s",
 463                                         _(" (check deferred; on battery)"));
 464                         else
 465                                 log_out(ctx, "%s",
 466                                         _(" (check after next mount)"));
 467                 } else
 468                         log_out(ctx, _(" (check in %ld mounts)"),
 469                                 next_check);
 470         }
 471         log_out(ctx, "\n");
 472 skip:
 473         ext2fs_close_free(&ctx->fs);
 474         e2fsck_free_context(ctx);
 475         exit(FSCK_OK);
 476 }
 477
 478 /*
 479  * For completion notice
 480  */
 481 struct percent_tbl {
 482         int     max_pass;
 483         int     table[32];
 484 };
 485 static struct percent_tbl e2fsck_tbl = {
 486         5, { 0, 70, 90, 92,  95, 100 }
 487 };
 488 static char bar[128], spaces[128];
 489
 490 static float calc_percent(struct percent_tbl *tbl, int pass, int curr,
 491                           int max)
 492 {
 493         float   percent;
 494
 495         if (pass <= 0)
 496                 return 0.0;
 497         if (pass > tbl->max_pass || max == 0)
 498                 return 100.0;
 499         percent = ((float) curr) / ((float) max);
 500         return ((percent * (tbl->table[pass] - tbl->table[pass-1]))
 501                 + tbl->table[pass-1]);
 502 }
 503
 504 void e2fsck_clear_progbar(e2fsck_t ctx)
 505 {
 506         if (!(ctx->flags & E2F_FLAG_PROG_BAR))
 507                 return;
 508
 509         printf("%s%s\r%s", ctx->start_meta, spaces + (sizeof(spaces) - 80),
 510                ctx->stop_meta);
 511         fflush(stdout);
 512         ctx->flags &= ~E2F_FLAG_PROG_BAR;
 513 }
 514
 515 int e2fsck_simple_progress(e2fsck_t ctx, const char *label, float percent,
 516                            unsigned int dpynum)
 517 {
 518         static const char spinner[] = "\\|/-";
 519         int     i;
 520         unsigned int    tick;
 521         struct timeval  tv;
 522         int dpywidth;
 523         int fixed_percent;
 524
 525         if (ctx->flags & E2F_FLAG_PROG_SUPPRESS)
 526                 return 0;
 527
 528         /*
 529          * Calculate the new progress position.  If the
 530          * percentage hasn't changed, then we skip out right
 531          * away.
 532          */
 533         fixed_percent = (int) ((10 * percent) + 0.5);
 534         if (ctx->progress_last_percent == fixed_percent)
 535                 return 0;
 536         ctx->progress_last_percent = fixed_percent;
 537
 538         /*
 539          * If we've already updated the spinner once within
 540          * the last 1/8th of a second, no point doing it
 541          * again.
 542          */
 543         gettimeofday(&tv, NULL);
 544         tick = (tv.tv_sec << 3) + (tv.tv_usec / (1000000 / 8));
 545         if ((tick == ctx->progress_last_time) &&
 546             (fixed_percent != 0) && (fixed_percent != 1000))
 547                 return 0;
 548         ctx->progress_last_time = tick;
 549
 550         /*
 551          * Advance the spinner, and note that the progress bar
 552          * will be on the screen
 553          */
 554         ctx->progress_pos = (ctx->progress_pos+1) & 3;
 555         ctx->flags |= E2F_FLAG_PROG_BAR;
 556
 557         dpywidth = 66 - strlen(label);
 558         dpywidth = 8 * (dpywidth / 8);
 559         if (dpynum)
 560                 dpywidth -= 8;
 561
 562         i = ((percent * dpywidth) + 50) / 100;
 563         printf("%s%s: |%s%s", ctx->start_meta, label,
 564                bar + (sizeof(bar) - (i+1)),
 565                spaces + (sizeof(spaces) - (dpywidth - i + 1)));
 566         if (fixed_percent == 1000)
 567                 fputc('|', stdout);
 568         else
 569                 fputc(spinner[ctx->progress_pos & 3], stdout);
 570         printf(" %4.1f%%  ", percent);
 571         if (dpynum)
 572                 printf("%u\r", dpynum);
 573         else
 574                 fputs(" \r", stdout);
 575         fputs(ctx->stop_meta, stdout);
 576
 577         if (fixed_percent == 1000)
 578                 e2fsck_clear_progbar(ctx);
 579         fflush(stdout);
 580
 581         return 0;
 582 }
 583
 584 static int e2fsck_update_progress(e2fsck_t ctx, int pass,
 585                                   unsigned long cur, unsigned long max)
 586 {
 587         char buf[1024];
 588         float percent;
 589
 590         if (pass == 0)
 591                 return 0;
 592
 593         if (ctx->progress_fd) {
 594                 snprintf(buf, sizeof(buf), "%d %lu %lu %s\n",
 595                          pass, cur, max, ctx->device_name);
 596                 write_all(ctx->progress_fd, buf, strlen(buf));
 597         } else {
 598                 percent = calc_percent(&e2fsck_tbl, pass, cur, max);
 599                 e2fsck_simple_progress(ctx, ctx->device_name,
 600                                        percent, 0);
 601         }
 602         return 0;
 603 }
 604
 605 #define PATH_SET "PATH=/sbin"
 606
 607 /*
 608  * Make sure 0,1,2 file descriptors are open, so that we don't open
 609  * the filesystem using the same file descriptor as stdout or stderr.
 610  */
 611 static void reserve_stdio_fds(void)
 612 {
 613         int     fd = 0;
 614
 615         while (fd <= 2) {
 616                 fd = open("/dev/null", O_RDWR);
 617                 if (fd < 0) {
 618                         fprintf(stderr, _("ERROR: Couldn't open "
 619                                 "/dev/null (%s)\n"),
 620                                 strerror(errno));
 621                         return;
 622                 }
 623         }
 624         (void) close(fd);
 625 }
 626
 627 #ifdef HAVE_SIGNAL_H
 628 static void signal_progress_on(int sig EXT2FS_ATTR((unused)))
 629 {
 630         e2fsck_t ctx = e2fsck_global_ctx;
 631
 632         if (!ctx)
 633                 return;
 634
 635         ctx->progress = e2fsck_update_progress;
 636 }
 637
 638 static void signal_progress_off(int sig EXT2FS_ATTR((unused)))
 639 {
 640         e2fsck_t ctx = e2fsck_global_ctx;
 641
 642         if (!ctx)
 643                 return;
 644
 645         e2fsck_clear_progbar(ctx);
 646         ctx->progress = 0;
 647 }
 648
 649 static void signal_cancel(int sig EXT2FS_ATTR((unused)))
 650 {
 651         e2fsck_t ctx = e2fsck_global_ctx;
 652
 653         if (!ctx)
 654                 exit(FSCK_CANCELED);
 655
 656         ctx->flags |= E2F_FLAG_CANCEL;
 657 }
 658 #endif
 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         unsigned long long reada_kb;
 666
 667         buf = string_copy(ctx, opts, 0);
 668         for (token = buf; token && *token; token = next) {
 669                 p = strchr(token, ',');
 670                 next = 0;
 671                 if (p) {
 672                         *p = 0;
 673                         next = p+1;
 674                 }
 675                 arg = strchr(token, '=');
 676                 if (arg) {
 677                         *arg = 0;
 678                         arg++;
 679                 }
 680                 if (strcmp(token, "ea_ver") == 0) {
 681                         if (!arg) {
 682                                 extended_usage++;
 683                                 continue;
 684                         }
 685                         ea_ver = strtoul(arg, &p, 0);
 686                         if (*p ||
 687                             ((ea_ver != 1) && (ea_ver != 2))) {
 688                                 fprintf(stderr, "%s",
 689                                         _("Invalid EA version.\n"));
 690                                 extended_usage++;
 691                                 continue;
 692                         }
 693                         ctx->ext_attr_ver = ea_ver;
 694                 } else if (strcmp(token, "readahead_kb") == 0) {
 695                         if (!arg) {
 696                                 extended_usage++;
 697                                 continue;
 698                         }
 699                         reada_kb = strtoull(arg, &p, 0);
 700                         if (*p) {
 701                                 fprintf(stderr, "%s",
 702                                         _("Invalid readahead buffer size.\n"));
 703                                 extended_usage++;
 704                                 continue;
 705                         }
 706                         ctx->readahead_kb = reada_kb;
 707                 } else if (strcmp(token, "fragcheck") == 0) {
 708                         ctx->options |= E2F_OPT_FRAGCHECK;
 709                         continue;
 710                 } else if (strcmp(token, "journal_only") == 0) {
 711                         if (arg) {
 712                                 extended_usage++;
 713                                 continue;
 714                         }
 715                         ctx->options |= E2F_OPT_JOURNAL_ONLY;
 716                 } else if (strcmp(token, "discard") == 0) {
 717                         ctx->options |= E2F_OPT_DISCARD;
 718                         continue;
 719                 } else if (strcmp(token, "nodiscard") == 0) {
 720                         ctx->options &= ~E2F_OPT_DISCARD;
 721                         continue;
 722                 } else if (strcmp(token, "optimize_extents") == 0) {
 723                         ctx->options &= ~E2F_OPT_NOOPT_EXTENTS;
 724                         continue;
 725                 } else if (strcmp(token, "no_optimize_extents") == 0) {
 726                         ctx->options |= E2F_OPT_NOOPT_EXTENTS;
 727                         continue;
 728                 } else if (strcmp(token, "inode_count_fullmap") == 0) {
 729                         ctx->options |= E2F_OPT_ICOUNT_FULLMAP;
 730                         continue;
 731                 } else if (strcmp(token, "no_inode_count_fullmap") == 0) {
 732                         ctx->options &= ~E2F_OPT_ICOUNT_FULLMAP;
 733                         continue;
 734                 } else if (strcmp(token, "log_filename") == 0) {
 735                         if (!arg)
 736                                 extended_usage++;
 737                         else
 738                                 ctx->log_fn = string_copy(ctx, arg, 0);
 739                         continue;
 740                 } else if (strcmp(token, "problem_log") == 0) {
 741                         if (!arg)
 742                                 extended_usage++;
 743                         else
 744                                 ctx->problem_log_fn = string_copy(ctx, arg, 0);
 745                         continue;
 746                 } else if (strcmp(token, "bmap2extent") == 0) {
 747                         ctx->options |= E2F_OPT_CONVERT_BMAP;
 748                         continue;
 749                 } else if (strcmp(token, "fixes_only") == 0) {
 750                         ctx->options |= E2F_OPT_FIXES_ONLY;
 751                         continue;
 752                 } else if (strcmp(token, "unshare_blocks") == 0) {
 753                         ctx->options |= E2F_OPT_UNSHARE_BLOCKS;
 754                         ctx->options |= E2F_OPT_FORCE;
 755                         continue;
 756                 } else {
 757                         fprintf(stderr, _("Unknown extended option: %s\n"),
 758                                 token);
 759                         extended_usage++;
 760                 }
 761         }
 762         free(buf);
 763
 764         if (extended_usage) {
 765                 fputs(_("\nExtended options are separated by commas, "
 766                        "and may take an argument which\n"
 767                        "is set off by an equals ('=') sign.  "
 768                        "Valid extended options are:\n\n"), stderr);
 769                 fputs(_("\tea_ver=<ea_version (1 or 2)>\n"), stderr);
 770                 fputs("\tfragcheck\n", stderr);
 771                 fputs("\tjournal_only\n", stderr);
 772                 fputs("\tdiscard\n", stderr);
 773                 fputs("\tnodiscard\n", stderr);
 774                 fputs("\toptimize_extents\n", stderr);
 775                 fputs("\tno_optimize_extents\n", stderr);
 776                 fputs("\tinode_count_fullmap\n", stderr);
 777                 fputs("\tno_inode_count_fullmap\n", stderr);
 778                 fputs(_("\treadahead_kb=<buffer size>\n"), stderr);
 779                 fputs("\tbmap2extent\n", stderr);
 780                 fputs("\tunshare_blocks\n", stderr);
 781                 fputs("\tfixes_only\n", stderr);
 782                 fputc('\n', stderr);
 783                 exit(1);
 784         }
 785 }
 786
 787 static void syntax_err_report(const char *filename, long err, int line_num)
 788 {
 789         fprintf(stderr,
 790                 _("Syntax error in e2fsck config file (%s, line #%d)\n\t%s\n"),
 791                 filename, line_num, error_message(err));
 792         exit(FSCK_ERROR);
 793 }
 794
 795 static const char *config_fn[] = { ROOT_SYSCONFDIR "/e2fsck.conf", 0 };
 796
 797 static errcode_t PRS(int argc, char *argv[], e2fsck_t *ret_ctx)
 798 {
 799         int             flush = 0;
 800         int             c, fd;
 801 #ifdef MTRACE
 802         extern void     *mallwatch;
 803 #endif
 804         e2fsck_t        ctx;
 805         errcode_t       retval;
 806 #ifdef HAVE_SIGNAL_H
 807         struct sigaction        sa;
 808 #endif
 809         char            *cp;
 810         int             res;            /* result of sscanf */
 811 #ifdef CONFIG_JBD_DEBUG
 812         char            *jbd_debug;
 813 #endif
 814         unsigned long long phys_mem_kb;
 815
 816         retval = e2fsck_allocate_context(&ctx);
 817         if (retval)
 818                 return retval;
 819
 820         *ret_ctx = ctx;
 821         e2fsck_global_ctx = ctx;
 822
 823         setvbuf(stdout, NULL, _IONBF, BUFSIZ);
 824         setvbuf(stderr, NULL, _IONBF, BUFSIZ);
 825         if (getenv("E2FSCK_FORCE_INTERACTIVE") || (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         phys_mem_kb = get_memory_size() / 1024;
 849         ctx->readahead_kb = ~0ULL;
 850         while ((c = getopt(argc, argv, "panyrcC:B:dE:fvtFVM:b:I:j:P:l:L:N:SsDkz:")) != EOF)
 851                 switch (c) {
 852                 case 'C':
 853                         ctx->progress = e2fsck_update_progress;
 854                         res = sscanf(optarg, "%d", &ctx->progress_fd);
 855                         if (res != 1)
 856                                 goto sscanf_err;
 857
 858                         if (ctx->progress_fd < 0) {
 859                                 ctx->progress = 0;
 860                                 ctx->progress_fd = ctx->progress_fd * -1;
 861                         }
 862                         if (!ctx->progress_fd)
 863                                 break;
 864                         /* Validate the file descriptor to avoid disasters */
 865                         fd = dup(ctx->progress_fd);
 866                         if (fd < 0) {
 867                                 fprintf(stderr,
 868                                 _("Error validating file descriptor %d: %s\n"),
 869                                         ctx->progress_fd,
 870                                         error_message(errno));
 871                                 fatal_error(ctx,
 872                         _("Invalid completion information file descriptor"));
 873                         } else
 874                                 close(fd);
 875                         break;
 876                 case 'D':
 877                         ctx->options |= E2F_OPT_COMPRESS_DIRS;
 878                         break;
 879                 case 'E':
 880                         parse_extended_opts(ctx, optarg);
 881                         break;
 882                 case 'p':
 883                 case 'a':
 884                         if (ctx->options & (E2F_OPT_YES|E2F_OPT_NO)) {
 885                         conflict_opt:
 886                                 fatal_error(ctx,
 887         _("Only one of the options -p/-a, -n or -y may be specified."));
 888                         }
 889                         ctx->options |= E2F_OPT_PREEN;
 890                         break;
 891                 case 'n':
 892                         if (ctx->options & (E2F_OPT_YES|E2F_OPT_PREEN))
 893                                 goto conflict_opt;
 894                         ctx->options |= E2F_OPT_NO;
 895                         break;
 896                 case 'y':
 897                         if (ctx->options & (E2F_OPT_PREEN|E2F_OPT_NO))
 898                                 goto conflict_opt;
 899                         ctx->options |= E2F_OPT_YES;
 900                         break;
 901                 case 't':
 902 #ifdef RESOURCE_TRACK
 903                         if (ctx->options & E2F_OPT_TIME)
 904                                 ctx->options |= E2F_OPT_TIME2;
 905                         else
 906                                 ctx->options |= E2F_OPT_TIME;
 907 #else
 908                         fprintf(stderr, _("The -t option is not "
 909                                 "supported on this version of e2fsck.\n"));
 910 #endif
 911                         break;
 912                 case 'c':
 913                         if (cflag++)
 914                                 ctx->options |= E2F_OPT_WRITECHECK;
 915                         ctx->options |= E2F_OPT_CHECKBLOCKS;
 916                         break;
 917                 case 'r':
 918                         /* What we do by default, anyway! */
 919                         break;
 920                 case 'b':
 921                         res = sscanf(optarg, "%llu", &ctx->use_superblock);
 922                         if (res != 1)
 923                                 goto sscanf_err;
 924                         ctx->flags |= E2F_FLAG_SB_SPECIFIED;
 925                         break;
 926                 case 'B':
 927                         ctx->blocksize = atoi(optarg);
 928                         break;
 929                 case 'I':
 930                         res = sscanf(optarg, "%d", &ctx->inode_buffer_blocks);
 931                         if (res != 1)
 932                                 goto sscanf_err;
 933                         break;
 934                 case 'j':
 935                         ctx->journal_name = blkid_get_devname(ctx->blkid,
 936                                                               optarg, NULL);
 937                         if (!ctx->journal_name) {
 938                                 com_err(ctx->program_name, 0,
 939                                         _("Unable to resolve '%s'"),
 940                                         optarg);
 941                                 fatal_error(ctx, 0);
 942                         }
 943                         break;
 944                 case 'P':
 945                         res = sscanf(optarg, "%d", &ctx->process_inode_size);
 946                         if (res != 1)
 947                                 goto sscanf_err;
 948                         break;
 949                 case 'L':
 950                         replace_bad_blocks++;
 951                         /* fall through */
 952                 case 'l':
 953                         if (bad_blocks_file)
 954                                 free(bad_blocks_file);
 955                         bad_blocks_file = string_copy(ctx, optarg, 0);
 956                         break;
 957                 case 'd':
 958                         ctx->options |= E2F_OPT_DEBUG;
 959                         break;
 960                 case 'f':
 961                         ctx->options |= E2F_OPT_FORCE;
 962                         break;
 963                 case 'F':
 964                         flush = 1;
 965                         break;
 966                 case 'v':
 967                         verbose = 1;
 968                         break;
 969                 case 'V':
 970                         show_version_only = 1;
 971                         break;
 972 #ifdef MTRACE
 973                 case 'M':
 974                         mallwatch = (void *) strtol(optarg, NULL, 0);
 975                         break;
 976 #endif
 977                 case 'N':
 978                         ctx->device_name = string_copy(ctx, optarg, 0);
 979                         break;
 980                 case 'k':
 981                         keep_bad_blocks++;
 982                         break;
 983                 case 'z':
 984                         ctx->undo_file = optarg;
 985                         break;
 986                 default:
 987                         usage(ctx);
 988                 }
 989         if (show_version_only)
 990                 return 0;
 991         if (optind != argc - 1)
 992                 usage(ctx);
 993         if ((ctx->options & E2F_OPT_NO) &&
 994             (ctx->options & E2F_OPT_COMPRESS_DIRS)) {
 995                 com_err(ctx->program_name, 0, "%s",
 996                         _("The -n and -D options are incompatible."));
 997                 fatal_error(ctx, 0);
 998         }
 999         if ((ctx->options & E2F_OPT_NO) && cflag) {
1000                 com_err(ctx->program_name, 0, "%s",
1001                         _("The -n and -c options are incompatible."));
1002                 fatal_error(ctx, 0);
1003         }
1004         if ((ctx->options & E2F_OPT_NO) && bad_blocks_file) {
1005                 com_err(ctx->program_name, 0, "%s",
1006                         _("The -n and -l/-L options are incompatible."));
1007                 fatal_error(ctx, 0);
1008         }
1009         if (ctx->options & E2F_OPT_NO)
1010                 ctx->options |= E2F_OPT_READONLY;
1011
1012         ctx->io_options = strchr(argv[optind], '?');
1013         if (ctx->io_options)
1014                 *ctx->io_options++ = 0;
1015         ctx->filesystem_name = blkid_get_devname(ctx->blkid, argv[optind], 0);
1016         if (!ctx->filesystem_name) {
1017                 com_err(ctx->program_name, 0, _("Unable to resolve '%s'"),
1018                         argv[optind]);
1019                 fatal_error(ctx, 0);
1020         }
1021
1022         /* Complain about mutually exclusive rebuilding activities */
1023         if (getenv("E2FSCK_FIXES_ONLY"))
1024                 ctx->options |= E2F_OPT_FIXES_ONLY;
1025         if ((ctx->options & E2F_OPT_COMPRESS_DIRS) &&
1026             (ctx->options & E2F_OPT_FIXES_ONLY)) {
1027                 com_err(ctx->program_name, 0, "%s",
1028                         _("The -D and -E fixes_only options are incompatible."));
1029                 fatal_error(ctx, 0);
1030         }
1031         if ((ctx->options & E2F_OPT_CONVERT_BMAP) &&
1032             (ctx->options & E2F_OPT_FIXES_ONLY)) {
1033                 com_err(ctx->program_name, 0, "%s",
1034                         _("The -E bmap2extent and fixes_only options are incompatible."));
1035                 fatal_error(ctx, 0);
1036         }
1037
1038         profile_get_boolean(ctx->profile, "options", "report_time", 0, 0,
1039                             &c);
1040         if (c)
1041                 ctx->options |= E2F_OPT_TIME | E2F_OPT_TIME2;
1042         profile_get_boolean(ctx->profile, "options", "report_verbose", 0, 0,
1043                             &c);
1044         if (c)
1045                 verbose = 1;
1046
1047         profile_get_boolean(ctx->profile, "options", "no_optimize_extents",
1048                             0, 0, &c);
1049         if (c)
1050                 ctx->options |= E2F_OPT_NOOPT_EXTENTS;
1051
1052         profile_get_boolean(ctx->profile, "options", "inode_count_fullmap",
1053                             0, 0, &c);
1054         if (c)
1055                 ctx->options |= E2F_OPT_ICOUNT_FULLMAP;
1056
1057         if (ctx->readahead_kb == ~0ULL) {
1058                 profile_get_integer(ctx->profile, "options",
1059                                     "readahead_mem_pct", 0, -1, &c);
1060                 if (c >= 0 && c <= 100)
1061                         ctx->readahead_kb = phys_mem_kb * c / 100;
1062                 profile_get_integer(ctx->profile, "options",
1063                                     "readahead_kb", 0, -1, &c);
1064                 if (c >= 0)
1065                         ctx->readahead_kb = c;
1066                 if (ctx->readahead_kb != ~0ULL &&
1067                     ctx->readahead_kb > phys_mem_kb)
1068                         ctx->readahead_kb = phys_mem_kb;
1069         }
1070
1071         /* Turn off discard in read-only mode */
1072         if ((ctx->options & E2F_OPT_NO) &&
1073             (ctx->options & E2F_OPT_DISCARD))
1074                 ctx->options &= ~E2F_OPT_DISCARD;
1075
1076         if (flush) {
1077                 fd = open(ctx->filesystem_name, O_RDONLY, 0);
1078                 if (fd < 0) {
1079                         com_err("open", errno,
1080                                 _("while opening %s for flushing"),
1081                                 ctx->filesystem_name);
1082                         fatal_error(ctx, 0);
1083                 }
1084                 if ((retval = ext2fs_sync_device(fd, 1))) {
1085                         com_err("ext2fs_sync_device", retval,
1086                                 _("while trying to flush %s"),
1087                                 ctx->filesystem_name);
1088                         fatal_error(ctx, 0);
1089                 }
1090                 close(fd);
1091         }
1092         if (cflag && bad_blocks_file) {
1093                 fprintf(stderr, "%s", _("The -c and the -l/-L options may not "
1094                                         "be both used at the same time.\n"));
1095                 exit(FSCK_USAGE);
1096         }
1097 #ifdef HAVE_SIGNAL_H
1098         /*
1099          * Set up signal action
1100          */
1101         memset(&sa, 0, sizeof(struct sigaction));
1102         sa.sa_handler = signal_cancel;
1103         sigaction(SIGINT, &sa, 0);
1104         sigaction(SIGTERM, &sa, 0);
1105 #ifdef SA_RESTART
1106         sa.sa_flags = SA_RESTART;
1107 #endif
1108         sa.sa_handler = signal_progress_on;
1109         sigaction(SIGUSR1, &sa, 0);
1110         sa.sa_handler = signal_progress_off;
1111         sigaction(SIGUSR2, &sa, 0);
1112 #endif
1113
1114         /* Update our PATH to include /sbin if we need to run badblocks  */
1115         if (cflag) {
1116                 char *oldpath = getenv("PATH");
1117                 char *newpath;
1118                 int len = sizeof(PATH_SET) + 1;
1119
1120                 if (oldpath)
1121                         len += strlen(oldpath);
1122
1123                 newpath = malloc(len);
1124                 if (!newpath)
1125                         fatal_error(ctx, "Couldn't malloc() newpath");
1126                 strcpy(newpath, PATH_SET);
1127
1128                 if (oldpath) {
1129                         strcat(newpath, ":");
1130                         strcat(newpath, oldpath);
1131                 }
1132                 putenv(newpath);
1133         }
1134 #ifdef CONFIG_JBD_DEBUG
1135         jbd_debug = getenv("E2FSCK_JBD_DEBUG");
1136         if (jbd_debug) {
1137                 res = sscanf(jbd_debug, "%d", &journal_enable_debug);
1138                 if (res != 1) {
1139                         fprintf(stderr,
1140                                 _("E2FSCK_JBD_DEBUG \"%s\" not an integer\n\n"),
1141                                 jbd_debug);
1142                         exit (1);
1143                 }
1144         }
1145 #endif
1146         return 0;
1147
1148 sscanf_err:
1149         fprintf(stderr, _("\nInvalid non-numeric argument to -%c (\"%s\")\n\n"),
1150                 c, optarg);
1151         exit (1);
1152 }
1153
1154 static errcode_t try_open_fs(e2fsck_t ctx, int flags, io_manager io_ptr,
1155                              ext2_filsys *ret_fs)
1156 {
1157         errcode_t retval;
1158
1159         *ret_fs = NULL;
1160         if (ctx->superblock && ctx->blocksize) {
1161                 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
1162                                       flags, ctx->superblock, ctx->blocksize,
1163                                       io_ptr, ret_fs);
1164         } else if (ctx->superblock) {
1165                 int blocksize;
1166                 for (blocksize = EXT2_MIN_BLOCK_SIZE;
1167                      blocksize <= EXT2_MAX_BLOCK_SIZE; blocksize *= 2) {
1168                         if (*ret_fs) {
1169                                 ext2fs_free(*ret_fs);
1170                                 *ret_fs = NULL;
1171                         }
1172                         retval = ext2fs_open2(ctx->filesystem_name,
1173                                               ctx->io_options, flags,
1174                                               ctx->superblock, blocksize,
1175                                               io_ptr, ret_fs);
1176                         if (!retval)
1177                                 break;
1178                 }
1179         } else
1180                 retval = ext2fs_open2(ctx->filesystem_name, ctx->io_options,
1181                                       flags, 0, 0, io_ptr, ret_fs);
1182
1183         if (retval == 0) {
1184                 (*ret_fs)->priv_data = ctx;
1185                 e2fsck_set_bitmap_type(*ret_fs, EXT2FS_BMAP64_RBTREE,
1186                                        "default", NULL);
1187         }
1188         return retval;
1189 }
1190
1191 static const char *my_ver_string = E2FSPROGS_VERSION;
1192 static const char *my_ver_date = E2FSPROGS_DATE;
1193
1194 static errcode_t e2fsck_check_mmp(ext2_filsys fs, e2fsck_t ctx)
1195 {
1196         struct mmp_struct *mmp_s;
1197         unsigned int mmp_check_interval;
1198         errcode_t retval = 0;
1199         struct problem_context pctx;
1200         unsigned int wait_time = 0;
1201
1202         clear_problem_context(&pctx);
1203         if (fs->mmp_buf == NULL) {
1204                 retval = ext2fs_get_mem(fs->blocksize, &fs->mmp_buf);
1205                 if (retval)
1206                         goto check_error;
1207         }
1208
1209         retval = ext2fs_mmp_read(fs, fs->super->s_mmp_block, fs->mmp_buf);
1210         if (retval)
1211                 goto check_error;
1212
1213         mmp_s = fs->mmp_buf;
1214
1215         mmp_check_interval = fs->super->s_mmp_update_interval;
1216         if (mmp_check_interval < EXT4_MMP_MIN_CHECK_INTERVAL)
1217                 mmp_check_interval = EXT4_MMP_MIN_CHECK_INTERVAL;
1218
1219         /*
1220          * If check_interval in MMP block is larger, use that instead of
1221          * check_interval from the superblock.
1222          */
1223         if (mmp_s->mmp_check_interval > mmp_check_interval)
1224                 mmp_check_interval = mmp_s->mmp_check_interval;
1225
1226         wait_time = mmp_check_interval * 2 + 1;
1227
1228         if (mmp_s->mmp_seq == EXT4_MMP_SEQ_CLEAN)
1229                 retval = 0;
1230         else if (mmp_s->mmp_seq == EXT4_MMP_SEQ_FSCK)
1231                 retval = EXT2_ET_MMP_FSCK_ON;
1232         else if (mmp_s->mmp_seq > EXT4_MMP_SEQ_MAX)
1233                 retval = EXT2_ET_MMP_UNKNOWN_SEQ;
1234
1235         if (retval)
1236                 goto check_error;
1237
1238         /* Print warning if e2fsck will wait for more than 20 secs. */
1239         if (verbose || wait_time > EXT4_MMP_MIN_CHECK_INTERVAL * 4) {
1240                 log_out(ctx, _("MMP interval is %u seconds and total wait "
1241                                "time is %u seconds. Please wait...\n"),
1242                         mmp_check_interval, wait_time * 2);
1243         }
1244
1245         return 0;
1246
1247 check_error:
1248
1249         if (retval == EXT2_ET_MMP_BAD_BLOCK) {
1250                 if (fix_problem(ctx, PR_0_MMP_INVALID_BLK, &pctx)) {
1251                         fs->super->s_mmp_block = 0;
1252                         ext2fs_mark_super_dirty(fs);
1253                         retval = 0;
1254                 }
1255         } else if (retval == EXT2_ET_MMP_FAILED) {
1256                 com_err(ctx->program_name, retval, "%s",
1257                         _("while checking MMP block"));
1258                 dump_mmp_msg(fs->mmp_buf, NULL);
1259         } else if (retval == EXT2_ET_MMP_FSCK_ON ||
1260                    retval == EXT2_ET_MMP_UNKNOWN_SEQ) {
1261                 com_err(ctx->program_name, retval, "%s",
1262                         _("while checking MMP block"));
1263                 dump_mmp_msg(fs->mmp_buf,
1264                              _("If you are sure the filesystem is not "
1265                                "in use on any node, run:\n"
1266                                "'tune2fs -f -E clear_mmp %s'\n"),
1267                              ctx->device_name);
1268         } else if (retval == EXT2_ET_MMP_MAGIC_INVALID) {
1269                 if (fix_problem(ctx, PR_0_MMP_INVALID_MAGIC, &pctx)) {
1270                         ext2fs_mmp_clear(fs);
1271                         retval = 0;
1272                 }
1273         } else if (retval == EXT2_ET_MMP_CSUM_INVALID) {
1274                 if (fix_problem(ctx, PR_0_MMP_CSUM_INVALID, &pctx)) {
1275                         ext2fs_mmp_clear(fs);
1276                         retval = 0;
1277                 }
1278         } else
1279                 com_err(ctx->program_name, retval, "%s",
1280                         _("while reading MMP block"));
1281         return retval;
1282 }
1283
1284 static int e2fsck_setup_tdb(e2fsck_t ctx, io_manager *io_ptr)
1285 {
1286         errcode_t retval = ENOMEM;
1287         char *tdb_dir = NULL, *tdb_file = NULL;
1288         char *dev_name, *tmp_name;
1289         int free_tdb_dir = 0;
1290
1291         /* (re)open a specific undo file */
1292         if (ctx->undo_file && ctx->undo_file[0] != 0) {
1293                 retval = set_undo_io_backing_manager(*io_ptr);
1294                 if (retval)
1295                         goto err;
1296                 *io_ptr = undo_io_manager;
1297                 retval = set_undo_io_backup_file(ctx->undo_file);
1298                 if (retval)
1299                         goto err;
1300                 printf(_("Overwriting existing filesystem; this can be undone "
1301                          "using the command:\n"
1302                          "    e2undo %s %s\n\n"),
1303                         ctx->undo_file, ctx->filesystem_name);
1304                 return retval;
1305         }
1306
1307         /*
1308          * Configuration via a conf file would be
1309          * nice
1310          */
1311         tdb_dir = getenv("E2FSPROGS_UNDO_DIR");
1312         if (!tdb_dir) {
1313                 profile_get_string(ctx->profile, "defaults",
1314                                    "undo_dir", 0, "/var/lib/e2fsprogs",
1315                                    &tdb_dir);
1316                 free_tdb_dir = 1;
1317         }
1318
1319         if (!strcmp(tdb_dir, "none") || (tdb_dir[0] == 0) ||
1320             access(tdb_dir, W_OK)) {
1321                 if (free_tdb_dir)
1322                         free(tdb_dir);
1323                 return 0;
1324         }
1325
1326         tmp_name = strdup(ctx->filesystem_name);
1327         if (!tmp_name)
1328                 goto errout;
1329         dev_name = basename(tmp_name);
1330         tdb_file = malloc(strlen(tdb_dir) + 8 + strlen(dev_name) + 7 + 1);
1331         if (!tdb_file) {
1332                 free(tmp_name);
1333                 goto errout;
1334         }
1335         sprintf(tdb_file, "%s/e2fsck-%s.e2undo", tdb_dir, dev_name);
1336         free(tmp_name);
1337
1338         if ((unlink(tdb_file) < 0) && (errno != ENOENT)) {
1339                 retval = errno;
1340                 com_err(ctx->program_name, retval,
1341                         _("while trying to delete %s"), tdb_file);
1342                 goto errout;
1343         }
1344
1345         retval = set_undo_io_backing_manager(*io_ptr);
1346         if (retval)
1347                 goto errout;
1348         *io_ptr = undo_io_manager;
1349         retval = set_undo_io_backup_file(tdb_file);
1350         if (retval)
1351                 goto errout;
1352         printf(_("Overwriting existing filesystem; this can be undone "
1353                  "using the command:\n"
1354                  "    e2undo %s %s\n\n"), tdb_file, ctx->filesystem_name);
1355
1356         if (free_tdb_dir)
1357                 free(tdb_dir);
1358         free(tdb_file);
1359         return 0;
1360
1361 errout:
1362         if (free_tdb_dir)
1363                 free(tdb_dir);
1364         free(tdb_file);
1365 err:
1366         com_err(ctx->program_name, retval, "%s",
1367                 _("while trying to setup undo file\n"));
1368         return retval;
1369 }
1370
1371 int main (int argc, char *argv[])
1372 {
1373         errcode_t       retval = 0, retval2 = 0, orig_retval = 0;
1374         int             exit_value = FSCK_OK;
1375         ext2_filsys     fs = 0;
1376         io_manager      io_ptr;
1377         struct ext2_super_block *sb;
1378         const char      *lib_ver_date;
1379         int             my_ver, lib_ver;
1380         e2fsck_t        ctx;
1381         blk64_t         orig_superblock = ~(blk64_t)0;
1382         struct problem_context pctx;
1383         int flags, run_result, was_changed;
1384         int journal_size;
1385         int sysval, sys_page_size = 4096;
1386         int old_bitmaps;
1387         __u32 features[3];
1388         char *cp;
1389         enum quota_type qtype;
1390
1391         clear_problem_context(&pctx);
1392         sigcatcher_setup();
1393 #ifdef MTRACE
1394         mtrace();
1395 #endif
1396 #ifdef MCHECK
1397         mcheck(0);
1398 #endif
1399 #ifdef ENABLE_NLS
1400         setlocale(LC_MESSAGES, "");
1401         setlocale(LC_CTYPE, "");
1402         bindtextdomain(NLS_CAT_NAME, LOCALEDIR);
1403         textdomain(NLS_CAT_NAME);
1404         set_com_err_gettext(gettext);
1405 #endif
1406         my_ver = ext2fs_parse_version_string(my_ver_string);
1407         lib_ver = ext2fs_get_library_version(0, &lib_ver_date);
1408         if (my_ver > lib_ver) {
1409                 fprintf( stderr, "%s",
1410                          _("Error: ext2fs library version out of date!\n"));
1411                 show_version_only++;
1412         }
1413
1414         retval = PRS(argc, argv, &ctx);
1415         if (retval) {
1416                 com_err("e2fsck", retval, "%s",
1417                         _("while trying to initialize program"));
1418                 exit(FSCK_ERROR);
1419         }
1420         reserve_stdio_fds();
1421
1422         set_up_logging(ctx);
1423         if (ctx->logf) {
1424                 int i;
1425
1426                 fputs("E2fsck run: ", ctx->logf);
1427                 for (i = 0; i < argc; i++) {
1428                         if (i)
1429                                 fputc(' ', ctx->logf);
1430                         fputs(argv[i], ctx->logf);
1431                 }
1432                 fputc('\n', ctx->logf);
1433         }
1434         if (ctx->problem_logf) {
1435                 int i;
1436
1437                 fputs("<?xml version=\"1.0\" encoding=\"utf-8\"?>\n",
1438                       ctx->problem_logf);
1439                 fprintf(ctx->problem_logf, "<problem_log time=\"%lu\">\n",
1440                         ctx->now);
1441                 fprintf(ctx->problem_logf, "<invocation prog=\"%s\"",
1442                         argv[0]);
1443                 for (i = 1; i < argc; i++)
1444                         fprintf(ctx->problem_logf, " arg%d=\"%s\"", i, argv[i]);
1445                 fputs("/>\n", ctx->problem_logf);
1446         }
1447
1448         init_resource_track(&ctx->global_rtrack, NULL);
1449         if (!(ctx->options & E2F_OPT_PREEN) || show_version_only)
1450                 log_err(ctx, "e2fsck %s (%s)\n", my_ver_string,
1451                          my_ver_date);
1452
1453         if (show_version_only) {
1454                 log_err(ctx, _("\tUsing %s, %s\n"),
1455                         error_message(EXT2_ET_BASE), lib_ver_date);
1456                 exit(FSCK_OK);
1457         }
1458
1459         check_mount(ctx);
1460
1461         if (!(ctx->options & E2F_OPT_PREEN) &&
1462             !(ctx->options & E2F_OPT_NO) &&
1463             !(ctx->options & E2F_OPT_YES)) {
1464                 if (!ctx->interactive)
1465                         fatal_error(ctx,
1466                                     _("need terminal for interactive repairs"));
1467         }
1468         ctx->superblock = ctx->use_superblock;
1469
1470         flags = EXT2_FLAG_SKIP_MMP;
1471 restart:
1472 #ifdef CONFIG_TESTIO_DEBUG
1473         if (getenv("TEST_IO_FLAGS") || getenv("TEST_IO_BLOCK")) {
1474                 io_ptr = test_io_manager;
1475                 test_io_backing_manager = unix_io_manager;
1476         } else
1477 #endif
1478                 io_ptr = unix_io_manager;
1479         flags |= EXT2_FLAG_NOFREE_ON_ERROR;
1480         profile_get_boolean(ctx->profile, "options", "old_bitmaps", 0, 0,
1481                             &old_bitmaps);
1482         if (!old_bitmaps)
1483                 flags |= EXT2_FLAG_64BITS;
1484         if ((ctx->options & E2F_OPT_READONLY) == 0) {
1485                 flags |= EXT2_FLAG_RW;
1486                 if (!(ctx->mount_flags & EXT2_MF_ISROOT &&
1487                       ctx->mount_flags & EXT2_MF_READONLY))
1488                         flags |= EXT2_FLAG_EXCLUSIVE;
1489                 if ((ctx->mount_flags & EXT2_MF_READONLY) &&
1490                     (ctx->options & E2F_OPT_FORCE))
1491                         flags &= ~EXT2_FLAG_EXCLUSIVE;
1492         }
1493
1494         if (ctx->undo_file) {
1495                 retval = e2fsck_setup_tdb(ctx, &io_ptr);
1496                 if (retval)
1497                         exit(FSCK_ERROR);
1498         }
1499
1500         ctx->openfs_flags = flags;
1501         retval = try_open_fs(ctx, flags, io_ptr, &fs);
1502
1503         if (!ctx->superblock && !(ctx->options & E2F_OPT_PREEN) &&
1504             !(ctx->flags & E2F_FLAG_SB_SPECIFIED) &&
1505             ((retval == EXT2_ET_BAD_MAGIC) ||
1506              (retval == EXT2_ET_SB_CSUM_INVALID) ||
1507              (retval == EXT2_ET_CORRUPT_SUPERBLOCK) ||
1508              ((retval == 0) && (retval2 = ext2fs_check_desc(fs))))) {
1509                 if (retval) {
1510                         pctx.errcode = retval;
1511                         fix_problem(ctx, PR_0_OPEN_FAILED, &pctx);
1512                 }
1513                 if (retval2) {
1514                         pctx.errcode = retval2;
1515                         fix_problem(ctx, PR_0_CHECK_DESC_FAILED, &pctx);
1516                 }
1517                 pctx.errcode = 0;
1518                 if (retval2 == ENOMEM || retval2 == EXT2_ET_NO_MEMORY) {
1519                         retval = retval2;
1520                         goto failure;
1521                 }
1522                 if (fs->flags & EXT2_FLAG_NOFREE_ON_ERROR) {
1523                         ext2fs_free(fs);
1524                         fs = NULL;
1525                 }
1526                 if (!fs || (fs->group_desc_count > 1)) {
1527                         log_out(ctx, _("%s: %s trying backup blocks...\n"),
1528                                 ctx->program_name,
1529                                 retval ? _("Superblock invalid,") :
1530                                 _("Group descriptors look bad..."));
1531                         orig_superblock = ctx->superblock;
1532                         get_backup_sb(ctx, fs, ctx->filesystem_name, io_ptr);
1533                         if (fs)
1534                                 ext2fs_close_free(&fs);
1535                         orig_retval = retval;
1536                         retval = try_open_fs(ctx, flags, io_ptr, &fs);
1537                         if ((orig_retval == 0) && retval != 0) {
1538                                 if (fs)
1539                                         ext2fs_close_free(&fs);
1540                                 log_out(ctx, _("%s: %s while using the "
1541                                                "backup blocks"),
1542                                         ctx->program_name,
1543                                         error_message(retval));
1544                                 log_out(ctx, _("%s: going back to original "
1545                                                "superblock\n"),
1546                                         ctx->program_name);
1547                                 ctx->superblock = orig_superblock;
1548                                 retval = try_open_fs(ctx, flags, io_ptr, &fs);
1549                         }
1550                 }
1551         }
1552         if (((retval == EXT2_ET_UNSUPP_FEATURE) ||
1553              (retval == EXT2_ET_RO_UNSUPP_FEATURE)) &&
1554             fs && fs->super) {
1555                 sb = fs->super;
1556                 features[0] = (sb->s_feature_compat &
1557                                ~EXT2_LIB_FEATURE_COMPAT_SUPP);
1558                 features[1] = (sb->s_feature_incompat &
1559                                ~EXT2_LIB_FEATURE_INCOMPAT_SUPP);
1560                 features[2] = (sb->s_feature_ro_compat &
1561                                ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
1562                 if (features[0] || features[1] || features[2])
1563                         goto print_unsupp_features;
1564         }
1565 failure:
1566         if (retval) {
1567                 if (orig_retval)
1568                         retval = orig_retval;
1569                 com_err(ctx->program_name, retval, _("while trying to open %s"),
1570                         ctx->filesystem_name);
1571                 if (retval == EXT2_ET_REV_TOO_HIGH) {
1572                         log_out(ctx, "%s",
1573                                 _("The filesystem revision is apparently "
1574                                   "too high for this version of e2fsck.\n"
1575                                   "(Or the filesystem superblock "
1576                                   "is corrupt)\n\n"));
1577                         fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
1578                 } else if (retval == EXT2_ET_SHORT_READ)
1579                         log_out(ctx, "%s",
1580                                 _("Could this be a zero-length partition?\n"));
1581                 else if ((retval == EPERM) || (retval == EACCES))
1582                         log_out(ctx, _("You must have %s access to the "
1583                                        "filesystem or be root\n"),
1584                                (ctx->options & E2F_OPT_READONLY) ?
1585                                "r/o" : "r/w");
1586                 else if (retval == ENXIO)
1587                         log_out(ctx, "%s",
1588                                 _("Possibly non-existent or swap device?\n"));
1589                 else if (retval == EBUSY)
1590                         log_out(ctx, "%s", _("Filesystem mounted or opened "
1591                                          "exclusively by another program?\n"));
1592                 else if (retval == ENOENT)
1593                         log_out(ctx, "%s",
1594                                 _("Possibly non-existent device?\n"));
1595 #ifdef EROFS
1596                 else if (retval == EROFS)
1597                         log_out(ctx, "%s", _("Disk write-protected; use the "
1598                                              "-n option to do a read-only\n"
1599                                              "check of the device.\n"));
1600 #endif
1601                 else {
1602                         /*
1603                          * Let's try once more will less consistency checking
1604                          * so that we are able to recover from more errors
1605                          * (e.g. some tool messing up some value in the sb).
1606                          */
1607                         if ((retval == EXT2_ET_CORRUPT_SUPERBLOCK) &&
1608                             !(flags & EXT2_FLAG_IGNORE_SB_ERRORS)) {
1609                                 if (fs)
1610                                         ext2fs_close_free(&fs);
1611                                 log_out(ctx, _("%s: Trying to load superblock "
1612                                         "despite errors...\n"),
1613                                         ctx->program_name);
1614                                 flags |= EXT2_FLAG_IGNORE_SB_ERRORS;
1615                                 /*
1616                                  * If we tried backup sb, revert to the
1617                                  * original one now.
1618                                  */
1619                                 if (orig_superblock != ~(blk64_t)0)
1620                                         ctx->superblock = orig_superblock;
1621                                 goto restart;
1622                         }
1623                         fix_problem(ctx, PR_0_SB_CORRUPT, &pctx);
1624                         if (retval == EXT2_ET_BAD_MAGIC)
1625                                 check_plausibility(ctx->filesystem_name,
1626                                                    CHECK_FS_EXIST, NULL);
1627                 }
1628                 fatal_error(ctx, 0);
1629         }
1630         /*
1631          * We only update the master superblock because (a) paranoia;
1632          * we don't want to corrupt the backup superblocks, and (b) we
1633          * don't need to update the mount count and last checked
1634          * fields in the backup superblock (the kernel doesn't update
1635          * the backup superblocks anyway).  With newer versions of the
1636          * library this flag is set by ext2fs_open2(), but we set this
1637          * here just to be sure.  (No, we don't support e2fsck running
1638          * with some other libext2fs than the one that it was shipped
1639          * with, but just in case....)
1640          */
1641         fs->flags |= EXT2_FLAG_MASTER_SB_ONLY;
1642
1643         if (!(ctx->flags & E2F_FLAG_GOT_DEVSIZE)) {
1644                 __u32 blocksize = EXT2_BLOCK_SIZE(fs->super);
1645                 int need_restart = 0;
1646
1647                 pctx.errcode = ext2fs_get_device_size2(ctx->filesystem_name,
1648                                                        blocksize,
1649                                                        &ctx->num_blocks);
1650                 /*
1651                  * The floppy driver refuses to allow anyone else to
1652                  * open the device if has been opened with O_EXCL;
1653                  * this is unlike other block device drivers in Linux.
1654                  * To handle this, we close the filesystem and then
1655                  * reopen the filesystem after we get the device size.
1656                  */
1657                 if (pctx.errcode == EBUSY) {
1658                         ext2fs_close_free(&fs);
1659                         need_restart++;
1660                         pctx.errcode =
1661                                 ext2fs_get_device_size2(ctx->filesystem_name,
1662                                                         blocksize,
1663                                                         &ctx->num_blocks);
1664                 }
1665                 if (pctx.errcode == EXT2_ET_UNIMPLEMENTED)
1666                         ctx->num_blocks = 0;
1667                 else if (pctx.errcode) {
1668                         fix_problem(ctx, PR_0_GETSIZE_ERROR, &pctx);
1669                         ctx->flags |= E2F_FLAG_ABORT;
1670                         fatal_error(ctx, 0);
1671                 }
1672                 ctx->flags |= E2F_FLAG_GOT_DEVSIZE;
1673                 if (need_restart)
1674                         goto restart;
1675         }
1676
1677         ctx->fs = fs;
1678         fs->now = ctx->now;
1679         sb = fs->super;
1680
1681         if (sb->s_rev_level > E2FSCK_CURRENT_REV) {
1682                 com_err(ctx->program_name, EXT2_ET_REV_TOO_HIGH,
1683                         _("while trying to open %s"),
1684                         ctx->filesystem_name);
1685         get_newer:
1686                 fatal_error(ctx, _("Get a newer version of e2fsck!"));
1687         }
1688
1689         /*
1690          * Set the device name, which is used whenever we print error
1691          * or informational messages to the user.
1692          */
1693         if (ctx->device_name == 0 &&
1694             (sb->s_volume_name[0] != 0)) {
1695                 ctx->device_name = string_copy(ctx, sb->s_volume_name,
1696                                                sizeof(sb->s_volume_name));
1697         }
1698         if (ctx->device_name == 0)
1699                 ctx->device_name = string_copy(ctx, ctx->filesystem_name, 0);
1700         for (cp = ctx->device_name; *cp; cp++)
1701                 if (isspace(*cp) || *cp == ':')
1702                         *cp = '_';
1703
1704         if (ctx->problem_logf) {
1705                 char buf[48];
1706
1707                 fprintf(ctx->problem_logf, "<filesystem dev=\"%s\"",
1708                         ctx->filesystem_name);
1709                 if (!uuid_is_null(sb->s_uuid)) {
1710                         uuid_unparse(sb->s_uuid, buf);
1711                         fprintf(ctx->problem_logf, " uuid=\"%s\"", buf);
1712                 }
1713                 if (sb->s_volume_name[0]) {
1714                         memset(buf, 0, sizeof(buf));
1715                         strncpy(buf, sb->s_volume_name, sizeof(buf));
1716                         fprintf(ctx->problem_logf, " label=\"%s\"", buf);
1717                 }
1718                 fputs("/>\n", ctx->problem_logf);
1719         }
1720
1721         ehandler_init(fs->io);
1722
1723         if (ext2fs_has_feature_mmp(fs->super) &&
1724             (flags & EXT2_FLAG_SKIP_MMP)) {
1725                 if (e2fsck_check_mmp(fs, ctx))
1726                         fatal_error(ctx, 0);
1727
1728                 /*
1729                  * Restart in order to reopen fs but this time start mmp.
1730                  */
1731                 ext2fs_close_free(&ctx->fs);
1732                 flags &= ~EXT2_FLAG_SKIP_MMP;
1733                 goto restart;
1734         }
1735
1736         if (ctx->logf)
1737                 fprintf(ctx->logf, "Filesystem UUID: %s\n",
1738                         e2p_uuid2str(sb->s_uuid));
1739
1740         /*
1741          * Make sure the ext3 superblock fields are consistent.
1742          */
1743         if ((ctx->mount_flags & (EXT2_MF_MOUNTED | EXT2_MF_BUSY)) == 0) {
1744                 retval = e2fsck_check_ext3_journal(ctx);
1745                 if (retval) {
1746                         com_err(ctx->program_name, retval,
1747                                 _("while checking journal for %s"),
1748                                 ctx->device_name);
1749                         fatal_error(ctx,
1750                                 _("Cannot proceed with file system check"));
1751                 }
1752         }
1753
1754         /*
1755          * Check to see if we need to do ext3-style recovery.  If so,
1756          * do it, and then restart the fsck.
1757          */
1758         if (ext2fs_has_feature_journal_needs_recovery(sb)) {
1759                 if (ctx->options & E2F_OPT_READONLY) {
1760                         log_out(ctx, "%s",
1761                                 _("Warning: skipping journal recovery because "
1762                                   "doing a read-only filesystem check.\n"));
1763                         io_channel_flush(ctx->fs->io);
1764                 } else {
1765                         if (ctx->flags & E2F_FLAG_RESTARTED) {
1766                                 /*
1767                                  * Whoops, we attempted to run the
1768                                  * journal twice.  This should never
1769                                  * happen, unless the hardware or
1770                                  * device driver is being bogus.
1771                                  */
1772                                 com_err(ctx->program_name, 0,
1773                                         _("unable to set superblock flags "
1774                                           "on %s\n"), ctx->device_name);
1775                                 fatal_error(ctx, 0);
1776                         }
1777                         retval = e2fsck_run_ext3_journal(ctx);
1778                         if (retval == EFSBADCRC) {
1779                                 log_out(ctx, _("Journal checksum error "
1780                                                "found in %s\n"),
1781                                         ctx->device_name);
1782                         } else if (retval == EFSCORRUPTED) {
1783                                 log_out(ctx, _("Journal corrupted in %s\n"),
1784                                         ctx->device_name);
1785                         } else if (retval) {
1786                                 com_err(ctx->program_name, retval,
1787                                 _("while recovering journal of %s"),
1788                                         ctx->device_name);
1789                         }
1790                         ext2fs_close_free(&ctx->fs);
1791                         ctx->flags |= E2F_FLAG_RESTARTED;
1792                         goto restart;
1793                 }
1794         }
1795
1796         /*
1797          * Check for compatibility with the feature sets.  We need to
1798          * be more stringent than ext2fs_open().
1799          */
1800         features[0] = sb->s_feature_compat & ~EXT2_LIB_FEATURE_COMPAT_SUPP;
1801         features[1] = sb->s_feature_incompat & ~EXT2_LIB_FEATURE_INCOMPAT_SUPP;
1802         features[2] = (sb->s_feature_ro_compat &
1803                        ~EXT2_LIB_FEATURE_RO_COMPAT_SUPP);
1804 print_unsupp_features:
1805         if (features[0] || features[1] || features[2]) {
1806                 int     i, j;
1807                 __u32   *mask = features, m;
1808
1809                 log_err(ctx, _("%s has unsupported feature(s):"),
1810                         ctx->filesystem_name);
1811
1812                 for (i=0; i <3; i++,mask++) {
1813                         for (j=0,m=1; j < 32; j++, m<<=1) {
1814                                 if (*mask & m)
1815                                         log_err(ctx, " %s",
1816                                                 e2p_feature2string(i, m));
1817                         }
1818                 }
1819                 log_err(ctx, "\n");
1820                 goto get_newer;
1821         }
1822
1823         if (ext2fs_has_feature_casefold(sb) && !fs->encoding) {
1824                 log_err(ctx, _("%s has unsupported encoding: %0x\n"),
1825                         ctx->filesystem_name, sb->s_encoding);
1826                 goto get_newer;
1827         }
1828
1829         /*
1830          * If the user specified a specific superblock, presumably the
1831          * master superblock has been trashed.  So we mark the
1832          * superblock as dirty, so it can be written out.
1833          */
1834         if (ctx->superblock &&
1835             !(ctx->options & E2F_OPT_READONLY))
1836                 ext2fs_mark_super_dirty(fs);
1837
1838         /*
1839          * Calculate the number of filesystem blocks per pagesize.  If
1840          * fs->blocksize > page_size, set the number of blocks per
1841          * pagesize to 1 to avoid division by zero errors.
1842          */
1843 #ifdef _SC_PAGESIZE
1844         sysval = sysconf(_SC_PAGESIZE);
1845         if (sysval > 0)
1846                 sys_page_size = sysval;
1847 #endif /* _SC_PAGESIZE */
1848         ctx->blocks_per_page = sys_page_size / fs->blocksize;
1849         if (ctx->blocks_per_page == 0)
1850                 ctx->blocks_per_page = 1;
1851
1852         if (ctx->superblock)
1853                 set_latch_flags(PR_LATCH_RELOC, PRL_LATCHED, 0);
1854         ext2fs_mark_valid(fs);
1855         check_super_block(ctx);
1856         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1857                 fatal_error(ctx, 0);
1858         check_if_skip(ctx);
1859         check_resize_inode(ctx);
1860         if (bad_blocks_file)
1861                 read_bad_blocks_file(ctx, bad_blocks_file, replace_bad_blocks);
1862         else if (cflag)
1863                 read_bad_blocks_file(ctx, 0, !keep_bad_blocks); /* Test disk */
1864         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1865                 fatal_error(ctx, 0);
1866
1867         /*
1868          * Mark the system as valid, 'til proven otherwise
1869          */
1870         ext2fs_mark_valid(fs);
1871
1872         retval = ext2fs_read_bb_inode(fs, &fs->badblocks);
1873         if (retval) {
1874                 log_out(ctx, _("%s: %s while reading bad blocks inode\n"),
1875                         ctx->program_name, error_message(retval));
1876                 preenhalt(ctx);
1877                 log_out(ctx, "%s", _("This doesn't bode well, "
1878                                      "but we'll try to go on...\n"));
1879         }
1880
1881         /*
1882          * Save the journal size in megabytes.
1883          * Try and use the journal size from the backup else let e2fsck
1884          * find the default journal size.
1885          */
1886         if (sb->s_jnl_backup_type == EXT3_JNL_BACKUP_BLOCKS)
1887                 journal_size = (sb->s_jnl_blocks[15] << (32 - 20)) |
1888                                (sb->s_jnl_blocks[16] >> 20);
1889         else
1890                 journal_size = -1;
1891
1892         if (ext2fs_has_feature_quota(sb)) {
1893                 /* Quotas were enabled. Do quota accounting during fsck. */
1894                 clear_problem_context(&pctx);
1895                 pctx.errcode = quota_init_context(&ctx->qctx, ctx->fs, 0);
1896                 if (pctx.errcode) {
1897                         fix_problem(ctx, PR_0_QUOTA_INIT_CTX, &pctx);
1898                         fatal_error(ctx, 0);
1899                 }
1900         }
1901
1902         run_result = e2fsck_run(ctx);
1903         e2fsck_clear_progbar(ctx);
1904
1905         if (!ctx->invalid_bitmaps &&
1906             (ctx->flags & E2F_FLAG_JOURNAL_INODE)) {
1907                 if (fix_problem(ctx, PR_6_RECREATE_JOURNAL, &pctx)) {
1908                         if (journal_size < 1024)
1909                                 journal_size = ext2fs_default_journal_size(ext2fs_blocks_count(fs->super));
1910                         if (journal_size < 0) {
1911                                 ext2fs_clear_feature_journal(fs->super);
1912                                 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1913                                 log_out(ctx, "%s: Couldn't determine "
1914                                         "journal size\n", ctx->program_name);
1915                                 goto no_journal;
1916                         }
1917                         log_out(ctx, _("Creating journal (%d blocks): "),
1918                                journal_size);
1919                         fflush(stdout);
1920                         retval = ext2fs_add_journal_inode(fs,
1921                                                           journal_size, 0);
1922                         if (retval) {
1923                                 log_out(ctx, "%s: while trying to create "
1924                                         "journal\n", error_message(retval));
1925                                 goto no_journal;
1926                         }
1927                         log_out(ctx, "%s", _(" Done.\n"));
1928                         log_out(ctx, "%s",
1929                                 _("\n*** journal has been regenerated ***\n"));
1930                 }
1931         }
1932 no_journal:
1933
1934         if (run_result & E2F_FLAG_ABORT) {
1935                 fatal_error(ctx, _("aborted"));
1936         } else if (run_result & E2F_FLAG_CANCEL) {
1937                 log_out(ctx, _("%s: e2fsck canceled.\n"), ctx->device_name ?
1938                         ctx->device_name : ctx->filesystem_name);
1939                 exit_value |= FSCK_CANCELED;
1940         } else if (ctx->qctx && !ctx->invalid_bitmaps) {
1941                 int needs_writeout;
1942
1943                 for (qtype = 0; qtype < MAXQUOTAS; qtype++) {
1944                         if (*quota_sb_inump(sb, qtype) == 0)
1945                                 continue;
1946                         needs_writeout = 0;
1947                         pctx.num = qtype;
1948                         retval = quota_compare_and_update(ctx->qctx, qtype,
1949                                                           &needs_writeout);
1950                         if ((retval || needs_writeout) &&
1951                             fix_problem(ctx, PR_6_UPDATE_QUOTAS, &pctx)) {
1952                                 pctx.errcode = quota_write_inode(ctx->qctx,
1953                                                                  1 << qtype);
1954                                 if (pctx.errcode)
1955                                         (void) fix_problem(ctx,
1956                                                 PR_6_WRITE_QUOTAS, &pctx);
1957                         }
1958                 }
1959                 quota_release_context(&ctx->qctx);
1960         }
1961
1962         if (run_result == E2F_FLAG_RESTART) {
1963                 log_out(ctx, "%s",
1964                         _("Restarting e2fsck from the beginning...\n"));
1965                 retval = e2fsck_reset_context(ctx);
1966                 if (retval) {
1967                         com_err(ctx->program_name, retval, "%s",
1968                                 _("while resetting context"));
1969                         fatal_error(ctx, 0);
1970                 }
1971                 ext2fs_close_free(&ctx->fs);
1972                 goto restart;
1973         }
1974
1975 #ifdef MTRACE
1976         mtrace_print("Cleanup");
1977 #endif
1978         was_changed = ext2fs_test_changed(fs);
1979         if (!(ctx->flags & E2F_FLAG_RUN_RETURN) &&
1980             !(ctx->options & E2F_OPT_READONLY)) {
1981                 if (ext2fs_test_valid(fs)) {
1982                         if (!(sb->s_state & EXT2_VALID_FS))
1983                                 exit_value |= FSCK_NONDESTRUCT;
1984                         sb->s_state = EXT2_VALID_FS;
1985                         if (check_backup_super_block(ctx))
1986                                 fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
1987                 } else
1988                         sb->s_state &= ~EXT2_VALID_FS;
1989                 if (!(ctx->flags & E2F_FLAG_TIME_INSANE))
1990                         sb->s_lastcheck = ctx->now;
1991                 sb->s_mnt_count = 0;
1992                 memset(((char *) sb) + EXT4_S_ERR_START, 0, EXT4_S_ERR_LEN);
1993                 pctx.errcode = ext2fs_set_gdt_csum(ctx->fs);
1994                 if (pctx.errcode)
1995                         fix_problem(ctx, PR_6_SET_BG_CHECKSUM, &pctx);
1996                 ext2fs_mark_super_dirty(fs);
1997         }
1998
1999         if (ext2fs_has_feature_shared_blocks(ctx->fs->super) &&
2000             (ctx->options & E2F_OPT_UNSHARE_BLOCKS) &&
2001             (ctx->options & E2F_OPT_NO))
2002                 /* Don't try to write or flush I/O, we just wanted to know whether or
2003                  * not there were enough free blocks to undo deduplication.
2004                  */
2005                 goto skip_write;
2006
2007         if (!(ctx->options & E2F_OPT_READONLY)) {
2008                 e2fsck_write_bitmaps(ctx);
2009                 if (fs->flags & EXT2_FLAG_DIRTY) {
2010                         pctx.errcode = ext2fs_flush(ctx->fs);
2011                         if (pctx.errcode)
2012                                 fix_problem(ctx, PR_6_FLUSH_FILESYSTEM, &pctx);
2013                 }
2014                 pctx.errcode = io_channel_flush(ctx->fs->io);
2015                 if (pctx.errcode)
2016                         fix_problem(ctx, PR_6_IO_FLUSH, &pctx);
2017         }
2018
2019         if (was_changed) {
2020                 int fs_fixed = (ctx->flags & E2F_FLAG_PROBLEMS_FIXED);
2021
2022                 if (fs_fixed)
2023                         exit_value |= FSCK_NONDESTRUCT;
2024                 if (!(ctx->options & E2F_OPT_PREEN)) {
2025 #if 0   /* Do this later; it breaks too many tests' golden outputs */
2026                         log_out(ctx, fs_fixed ?
2027                                 _("\n%s: ***** FILE SYSTEM ERRORS "
2028                                   "CORRECTED *****\n") :
2029                                 _("%s: File system was modified.\n"),
2030                                 ctx->device_name);
2031 #else
2032                         log_out(ctx,
2033                                 _("\n%s: ***** FILE SYSTEM WAS MODIFIED *****\n"),
2034                                 ctx->device_name);
2035 #endif
2036                 }
2037                 if (ctx->mount_flags & EXT2_MF_ISROOT) {
2038                         log_out(ctx, _("%s: ***** REBOOT SYSTEM *****\n"),
2039                                 ctx->device_name);
2040                         exit_value |= FSCK_REBOOT;
2041                 }
2042         }
2043
2044 skip_write:
2045         if (!ext2fs_test_valid(fs) ||
2046             ((exit_value & FSCK_CANCELED) &&
2047              (sb->s_state & EXT2_ERROR_FS))) {
2048                 log_out(ctx, _("\n%s: ********** WARNING: Filesystem still has "
2049                                "errors **********\n\n"), ctx->device_name);
2050                 exit_value |= FSCK_UNCORRECTED;
2051                 exit_value &= ~FSCK_NONDESTRUCT;
2052         }
2053         if (exit_value & FSCK_CANCELED) {
2054                 int     allow_cancellation;
2055
2056                 profile_get_boolean(ctx->profile, "options",
2057                                     "allow_cancellation", 0, 0,
2058                                     &allow_cancellation);
2059                 exit_value &= ~FSCK_NONDESTRUCT;
2060                 if (allow_cancellation && ext2fs_test_valid(fs) &&
2061                     (sb->s_state & EXT2_VALID_FS) &&
2062                     !(sb->s_state & EXT2_ERROR_FS))
2063                         exit_value = 0;
2064         } else
2065                 show_stats(ctx);
2066
2067         print_resource_track(ctx, NULL, &ctx->global_rtrack, ctx->fs->io);
2068
2069         ext2fs_close_free(&ctx->fs);
2070         free(ctx->journal_name);
2071
2072         if (ctx->logf)
2073                 fprintf(ctx->logf, "Exit status: %d\n", exit_value);
2074         e2fsck_free_context(ctx);
2075         remove_error_table(&et_ext2_error_table);
2076         remove_error_table(&et_prof_error_table);
2077         return exit_value;
2078 }