e2fsck/pass5.c

   1 /*
   2  * pass5.c --- check block and inode bitmaps against on-disk bitmaps
   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
  13 #include "e2fsck.h"
  14 #include "problem.h"
  15
  16 static void check_block_bitmaps(e2fsck_t ctx);
  17 static void check_inode_bitmaps(e2fsck_t ctx);
  18 static void check_inode_end(e2fsck_t ctx);
  19 static void check_block_end(e2fsck_t ctx);
  20
  21 void e2fsck_pass5(e2fsck_t ctx)
  22 {
  23 #ifdef RESOURCE_TRACK
  24         struct resource_track   rtrack;
  25 #endif
  26         struct problem_context  pctx;
  27
  28 #ifdef MTRACE
  29         mtrace_print("Pass 5");
  30 #endif
  31
  32 #ifdef RESOURCE_TRACK
  33         init_resource_track(&rtrack, ctx->fs->io);
  34 #endif
  35
  36         clear_problem_context(&pctx);
  37
  38         if (!(ctx->options & E2F_OPT_PREEN))
  39                 fix_problem(ctx, PR_5_PASS_HEADER, &pctx);
  40
  41         if (ctx->progress)
  42                 if ((ctx->progress)(ctx, 5, 0, ctx->fs->group_desc_count*2))
  43                         return;
  44
  45         e2fsck_read_bitmaps(ctx);
  46
  47         check_block_bitmaps(ctx);
  48         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
  49                 return;
  50         check_inode_bitmaps(ctx);
  51         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
  52                 return;
  53         check_inode_end(ctx);
  54         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
  55                 return;
  56         check_block_end(ctx);
  57         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
  58                 return;
  59
  60         ext2fs_free_inode_bitmap(ctx->inode_used_map);
  61         ctx->inode_used_map = 0;
  62         ext2fs_free_inode_bitmap(ctx->inode_dir_map);
  63         ctx->inode_dir_map = 0;
  64         ext2fs_free_block_bitmap(ctx->block_found_map);
  65         ctx->block_found_map = 0;
  66
  67 #ifdef RESOURCE_TRACK
  68         if (ctx->options & E2F_OPT_TIME2) {
  69                 e2fsck_clear_progbar(ctx);
  70                 print_resource_track(_("Pass 5"), &rtrack, ctx->fs->io);
  71         }
  72 #endif
  73 }
  74
  75 #define NO_BLK ((blk_t) -1)
  76
  77 static void print_bitmap_problem(e2fsck_t ctx, int problem,
  78                             struct problem_context *pctx)
  79 {
  80         switch (problem) {
  81         case PR_5_BLOCK_UNUSED:
  82                 if (pctx->blk == pctx->blk2)
  83                         pctx->blk2 = 0;
  84                 else
  85                         problem = PR_5_BLOCK_RANGE_UNUSED;
  86                 break;
  87         case PR_5_BLOCK_USED:
  88                 if (pctx->blk == pctx->blk2)
  89                         pctx->blk2 = 0;
  90                 else
  91                         problem = PR_5_BLOCK_RANGE_USED;
  92                 break;
  93         case PR_5_INODE_UNUSED:
  94                 if (pctx->ino == pctx->ino2)
  95                         pctx->ino2 = 0;
  96                 else
  97                         problem = PR_5_INODE_RANGE_UNUSED;
  98                 break;
  99         case PR_5_INODE_USED:
 100                 if (pctx->ino == pctx->ino2)
 101                         pctx->ino2 = 0;
 102                 else
 103                         problem = PR_5_INODE_RANGE_USED;
 104                 break;
 105         }
 106         fix_problem(ctx, problem, pctx);
 107         pctx->blk = pctx->blk2 = NO_BLK;
 108         pctx->ino = pctx->ino2 = 0;
 109 }
 110
 111 static void check_block_bitmaps(e2fsck_t ctx)
 112 {
 113         ext2_filsys fs = ctx->fs;
 114         blk_t   i, super;
 115         int     *free_array;
 116         int     group = 0;
 117         blk_t   blocks = 0;
 118         blk_t   free_blocks = 0;
 119         int     group_free = 0;
 120         int     actual, bitmap;
 121         struct problem_context  pctx;
 122         int     problem, save_problem, fixit, had_problem;
 123         errcode_t       retval;
 124         int             lazy_flag, csum_flag;
 125         int             skip_group = 0;
 126
 127         clear_problem_context(&pctx);
 128         free_array = (int *) e2fsck_allocate_memory(ctx,
 129             fs->group_desc_count * sizeof(int), "free block count array");
 130
 131         if ((fs->super->s_first_data_block <
 132              ext2fs_get_block_bitmap_start(ctx->block_found_map)) ||
 133             (fs->super->s_blocks_count-1 >
 134              ext2fs_get_block_bitmap_end(ctx->block_found_map))) {
 135                 pctx.num = 1;
 136                 pctx.blk = fs->super->s_first_data_block;
 137                 pctx.blk2 = fs->super->s_blocks_count -1;
 138                 pctx.ino = ext2fs_get_block_bitmap_start(ctx->block_found_map);
 139                 pctx.ino2 = ext2fs_get_block_bitmap_end(ctx->block_found_map);
 140                 fix_problem(ctx, PR_5_BMAP_ENDPOINTS, &pctx);
 141
 142                 ctx->flags |= E2F_FLAG_ABORT; /* fatal */
 143                 goto errout;
 144         }
 145
 146         if ((fs->super->s_first_data_block <
 147              ext2fs_get_block_bitmap_start(fs->block_map)) ||
 148             (fs->super->s_blocks_count-1 >
 149              ext2fs_get_block_bitmap_end(fs->block_map))) {
 150                 pctx.num = 2;
 151                 pctx.blk = fs->super->s_first_data_block;
 152                 pctx.blk2 = fs->super->s_blocks_count -1;
 153                 pctx.ino = ext2fs_get_block_bitmap_start(fs->block_map);
 154                 pctx.ino2 = ext2fs_get_block_bitmap_end(fs->block_map);
 155                 fix_problem(ctx, PR_5_BMAP_ENDPOINTS, &pctx);
 156
 157                 ctx->flags |= E2F_FLAG_ABORT; /* fatal */
 158                 goto errout;
 159         }
 160
 161         lazy_flag = EXT2_HAS_COMPAT_FEATURE(fs->super,
 162                                             EXT2_FEATURE_COMPAT_LAZY_BG);
 163         csum_flag = EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
 164                                                EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
 165 redo_counts:
 166         had_problem = 0;
 167         save_problem = 0;
 168         pctx.blk = pctx.blk2 = NO_BLK;
 169         if ((lazy_flag || csum_flag) &&
 170             (fs->group_desc[group].bg_flags & EXT2_BG_BLOCK_UNINIT))
 171                 skip_group++;
 172         super = fs->super->s_first_data_block;
 173         for (i = fs->super->s_first_data_block;
 174              i < fs->super->s_blocks_count;
 175              i++) {
 176                 actual = ext2fs_fast_test_block_bitmap(ctx->block_found_map, i);
 177
 178                 if (skip_group) {
 179                         if ((i >= super) &&
 180                             (i <= super + fs->desc_blocks) &&
 181                             ext2fs_bg_has_super(fs, group))
 182                                 bitmap = 1;
 183                         else if (i == fs->group_desc[group].bg_block_bitmap)
 184                                 bitmap = 1;
 185                         else if (i == fs->group_desc[group].bg_inode_bitmap)
 186                                 bitmap = 1;
 187                         else if (i >= fs->group_desc[group].bg_inode_table &&
 188                                  (i < fs->group_desc[group].bg_inode_table
 189                                   + fs->inode_blocks_per_group))
 190                                 bitmap = 1;
 191                         else
 192                                 bitmap = 0;
 193                         actual = (actual != 0);
 194                 } else
 195                         bitmap = ext2fs_fast_test_block_bitmap(fs->block_map, i);
 196
 197                 if (actual == bitmap)
 198                         goto do_counts;
 199
 200                 if (!actual && bitmap) {
 201                         /*
 202                          * Block not used, but marked in use in the bitmap.
 203                          */
 204                         problem = PR_5_BLOCK_UNUSED;
 205                 } else {
 206                         /*
 207                          * Block used, but not marked in use in the bitmap.
 208                          */
 209                         problem = PR_5_BLOCK_USED;
 210
 211                         if (skip_group) {
 212                                 struct problem_context pctx2;
 213                                 pctx2.blk = i;
 214                                 pctx2.group = group;
 215                                 if (fix_problem(ctx, PR_5_BLOCK_UNINIT,&pctx2)){
 216                                         fs->group_desc[group].bg_flags &=
 217                                                 ~EXT2_BG_BLOCK_UNINIT;
 218                                         skip_group = 0;
 219                                 }
 220                         }
 221                 }
 222                 if (pctx.blk == NO_BLK) {
 223                         pctx.blk = pctx.blk2 = i;
 224                         save_problem = problem;
 225                 } else {
 226                         if ((problem == save_problem) &&
 227                             (pctx.blk2 == i-1))
 228                                 pctx.blk2++;
 229                         else {
 230                                 print_bitmap_problem(ctx, save_problem, &pctx);
 231                                 pctx.blk = pctx.blk2 = i;
 232                                 save_problem = problem;
 233                         }
 234                 }
 235                 ctx->flags |= E2F_FLAG_PROG_SUPPRESS;
 236                 had_problem++;
 237
 238         do_counts:
 239                 if (!bitmap && (!skip_group || csum_flag)) {
 240                         group_free++;
 241                         free_blocks++;
 242                 }
 243                 blocks ++;
 244                 if ((blocks == fs->super->s_blocks_per_group) ||
 245                     (i == fs->super->s_blocks_count-1)) {
 246                         free_array[group] = group_free;
 247                         group ++;
 248                         blocks = 0;
 249                         group_free = 0;
 250                         skip_group = 0;
 251                         super += fs->super->s_blocks_per_group;
 252                         if (ctx->progress)
 253                                 if ((ctx->progress)(ctx, 5, group,
 254                                                     fs->group_desc_count*2))
 255                                         goto errout;
 256                         if ((lazy_flag || csum_flag) &&
 257                             (i != fs->super->s_blocks_count-1) &&
 258                             (fs->group_desc[group].bg_flags &
 259                              EXT2_BG_BLOCK_UNINIT))
 260                                 skip_group++;
 261                 }
 262         }
 263         if (pctx.blk != NO_BLK)
 264                 print_bitmap_problem(ctx, save_problem, &pctx);
 265         if (had_problem)
 266                 fixit = end_problem_latch(ctx, PR_LATCH_BBITMAP);
 267         else
 268                 fixit = -1;
 269         ctx->flags &= ~E2F_FLAG_PROG_SUPPRESS;
 270
 271         if (fixit == 1) {
 272                 ext2fs_free_block_bitmap(fs->block_map);
 273                 retval = ext2fs_copy_bitmap(ctx->block_found_map,
 274                                                   &fs->block_map);
 275                 if (retval) {
 276                         clear_problem_context(&pctx);
 277                         fix_problem(ctx, PR_5_COPY_BBITMAP_ERROR, &pctx);
 278                         ctx->flags |= E2F_FLAG_ABORT;
 279                         goto errout;
 280                 }
 281                 ext2fs_set_bitmap_padding(fs->block_map);
 282                 ext2fs_mark_bb_dirty(fs);
 283
 284                 /* Redo the counts */
 285                 blocks = 0; free_blocks = 0; group_free = 0; group = 0;
 286                 memset(free_array, 0, fs->group_desc_count * sizeof(int));
 287                 goto redo_counts;
 288         } else if (fixit == 0)
 289                 ext2fs_unmark_valid(fs);
 290
 291         for (i = 0; i < fs->group_desc_count; i++) {
 292                 if (free_array[i] != fs->group_desc[i].bg_free_blocks_count) {
 293                         pctx.group = i;
 294                         pctx.blk = fs->group_desc[i].bg_free_blocks_count;
 295                         pctx.blk2 = free_array[i];
 296
 297                         if (fix_problem(ctx, PR_5_FREE_BLOCK_COUNT_GROUP,
 298                                         &pctx)) {
 299                                 fs->group_desc[i].bg_free_blocks_count =
 300                                         free_array[i];
 301                                 ext2fs_mark_super_dirty(fs);
 302                         } else
 303                                 ext2fs_unmark_valid(fs);
 304                 }
 305         }
 306         if (free_blocks != fs->super->s_free_blocks_count) {
 307                 pctx.group = 0;
 308                 pctx.blk = fs->super->s_free_blocks_count;
 309                 pctx.blk2 = free_blocks;
 310
 311                 if (fix_problem(ctx, PR_5_FREE_BLOCK_COUNT, &pctx)) {
 312                         fs->super->s_free_blocks_count = free_blocks;
 313                         ext2fs_mark_super_dirty(fs);
 314                 } else
 315                         ext2fs_unmark_valid(fs);
 316         }
 317 errout:
 318         ext2fs_free_mem(&free_array);
 319 }
 320
 321 static void check_inode_bitmaps(e2fsck_t ctx)
 322 {
 323         ext2_filsys fs = ctx->fs;
 324         ext2_ino_t      i;
 325         unsigned int    free_inodes = 0;
 326         int             group_free = 0;
 327         int             dirs_count = 0;
 328         int             group = 0;
 329         unsigned int    inodes = 0;
 330         int             *free_array;
 331         int             *dir_array;
 332         int             actual, bitmap;
 333         errcode_t       retval;
 334         struct problem_context  pctx;
 335         int             problem, save_problem, fixit, had_problem;
 336         int             lazy_flag, csum_flag;
 337         int             skip_group = 0;
 338
 339         clear_problem_context(&pctx);
 340         free_array = (int *) e2fsck_allocate_memory(ctx,
 341             fs->group_desc_count * sizeof(int), "free inode count array");
 342
 343         dir_array = (int *) e2fsck_allocate_memory(ctx,
 344            fs->group_desc_count * sizeof(int), "directory count array");
 345
 346         if ((1 < ext2fs_get_inode_bitmap_start(ctx->inode_used_map)) ||
 347             (fs->super->s_inodes_count >
 348              ext2fs_get_inode_bitmap_end(ctx->inode_used_map))) {
 349                 pctx.num = 3;
 350                 pctx.blk = 1;
 351                 pctx.blk2 = fs->super->s_inodes_count;
 352                 pctx.ino = ext2fs_get_inode_bitmap_start(ctx->inode_used_map);
 353                 pctx.ino2 = ext2fs_get_inode_bitmap_end(ctx->inode_used_map);
 354                 fix_problem(ctx, PR_5_BMAP_ENDPOINTS, &pctx);
 355
 356                 ctx->flags |= E2F_FLAG_ABORT; /* fatal */
 357                 goto errout;
 358         }
 359         if ((1 < ext2fs_get_inode_bitmap_start(fs->inode_map)) ||
 360             (fs->super->s_inodes_count >
 361              ext2fs_get_inode_bitmap_end(fs->inode_map))) {
 362                 pctx.num = 4;
 363                 pctx.blk = 1;
 364                 pctx.blk2 = fs->super->s_inodes_count;
 365                 pctx.ino = ext2fs_get_inode_bitmap_start(fs->inode_map);
 366                 pctx.ino2 = ext2fs_get_inode_bitmap_end(fs->inode_map);
 367                 fix_problem(ctx, PR_5_BMAP_ENDPOINTS, &pctx);
 368
 369                 ctx->flags |= E2F_FLAG_ABORT; /* fatal */
 370                 goto errout;
 371         }
 372
 373         lazy_flag = EXT2_HAS_COMPAT_FEATURE(fs->super,
 374                                             EXT2_FEATURE_COMPAT_LAZY_BG);
 375         csum_flag = EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
 376                                                EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
 377 redo_counts:
 378         had_problem = 0;
 379         save_problem = 0;
 380         pctx.ino = pctx.ino2 = 0;
 381         if ((lazy_flag || csum_flag) &&
 382             (fs->group_desc[group].bg_flags & EXT2_BG_INODE_UNINIT))
 383                 skip_group++;
 384
 385         /* Protect loop from wrap-around if inodes_count is maxed */
 386         for (i = 1; i <= fs->super->s_inodes_count && i > 0; i++) {
 387                 actual = ext2fs_fast_test_inode_bitmap(ctx->inode_used_map, i);
 388                 if (skip_group)
 389                         bitmap = 0;
 390                 else
 391                         bitmap = ext2fs_fast_test_inode_bitmap(fs->inode_map, i);
 392                 if (actual == bitmap)
 393                         goto do_counts;
 394
 395                 if (!actual && bitmap) {
 396                         /*
 397                          * Inode wasn't used, but marked in bitmap
 398                          */
 399                         problem = PR_5_INODE_UNUSED;
 400                 } else /* if (actual && !bitmap) */ {
 401                         /*
 402                          * Inode used, but not in bitmap
 403                          */
 404                         problem = PR_5_INODE_USED;
 405
 406                         /* We should never hit this, because it means that
 407                          * inodes were marked in use that weren't noticed
 408                          * in pass1 or pass 2. It is easier to fix the problem
 409                          * than to kill e2fsck and leave the user stuck. */
 410                         if (skip_group) {
 411                                 struct problem_context pctx2;
 412                                 pctx2.blk = i;
 413                                 pctx2.group = group;
 414                                 if (fix_problem(ctx, PR_5_INODE_UNINIT,&pctx2)){
 415                                         fs->group_desc[group].bg_flags &=
 416                                                 ~EXT2_BG_INODE_UNINIT;
 417                                         skip_group = 0;
 418                                 }
 419                         }
 420                 }
 421                 if (pctx.ino == 0) {
 422                         pctx.ino = pctx.ino2 = i;
 423                         save_problem = problem;
 424                 } else {
 425                         if ((problem == save_problem) &&
 426                             (pctx.ino2 == i-1))
 427                                 pctx.ino2++;
 428                         else {
 429                                 print_bitmap_problem(ctx, save_problem, &pctx);
 430                                 pctx.ino = pctx.ino2 = i;
 431                                 save_problem = problem;
 432                         }
 433                 }
 434                 ctx->flags |= E2F_FLAG_PROG_SUPPRESS;
 435                 had_problem++;
 436
 437 do_counts:
 438                 if (bitmap) {
 439                         if (ext2fs_test_inode_bitmap(ctx->inode_dir_map, i))
 440                                 dirs_count++;
 441                 } else if (!skip_group || csum_flag) {
 442                         group_free++;
 443                         free_inodes++;
 444                 }
 445                 inodes++;
 446                 if ((inodes == fs->super->s_inodes_per_group) ||
 447                     (i == fs->super->s_inodes_count)) {
 448                         free_array[group] = group_free;
 449                         dir_array[group] = dirs_count;
 450                         group ++;
 451                         inodes = 0;
 452                         skip_group = 0;
 453                         group_free = 0;
 454                         dirs_count = 0;
 455                         if (ctx->progress)
 456                                 if ((ctx->progress)(ctx, 5,
 457                                             group + fs->group_desc_count,
 458                                             fs->group_desc_count*2))
 459                                         goto errout;
 460                         if ((lazy_flag || csum_flag) &&
 461                             (i != fs->super->s_inodes_count) &&
 462                             (fs->group_desc[group].bg_flags &
 463                              EXT2_BG_INODE_UNINIT))
 464                                 skip_group++;
 465                 }
 466         }
 467         if (pctx.ino)
 468                 print_bitmap_problem(ctx, save_problem, &pctx);
 469
 470         if (had_problem)
 471                 fixit = end_problem_latch(ctx, PR_LATCH_IBITMAP);
 472         else
 473                 fixit = -1;
 474         ctx->flags &= ~E2F_FLAG_PROG_SUPPRESS;
 475
 476         if (fixit == 1) {
 477                 ext2fs_free_inode_bitmap(fs->inode_map);
 478                 retval = ext2fs_copy_bitmap(ctx->inode_used_map,
 479                                                   &fs->inode_map);
 480                 if (retval) {
 481                         clear_problem_context(&pctx);
 482                         fix_problem(ctx, PR_5_COPY_IBITMAP_ERROR, &pctx);
 483                         ctx->flags |= E2F_FLAG_ABORT;
 484                         goto errout;
 485                 }
 486                 ext2fs_set_bitmap_padding(fs->inode_map);
 487                 ext2fs_mark_ib_dirty(fs);
 488
 489                 /* redo counts */
 490                 inodes = 0; free_inodes = 0; group_free = 0;
 491                 dirs_count = 0; group = 0;
 492                 memset(free_array, 0, fs->group_desc_count * sizeof(int));
 493                 memset(dir_array, 0, fs->group_desc_count * sizeof(int));
 494                 goto redo_counts;
 495         } else if (fixit == 0)
 496                 ext2fs_unmark_valid(fs);
 497
 498         for (i = 0; i < fs->group_desc_count; i++) {
 499                 if (free_array[i] != fs->group_desc[i].bg_free_inodes_count) {
 500                         pctx.group = i;
 501                         pctx.ino = fs->group_desc[i].bg_free_inodes_count;
 502                         pctx.ino2 = free_array[i];
 503                         if (fix_problem(ctx, PR_5_FREE_INODE_COUNT_GROUP,
 504                                         &pctx)) {
 505                                 fs->group_desc[i].bg_free_inodes_count =
 506                                         free_array[i];
 507                                 ext2fs_mark_super_dirty(fs);
 508                         } else
 509                                 ext2fs_unmark_valid(fs);
 510                 }
 511                 if (dir_array[i] != fs->group_desc[i].bg_used_dirs_count) {
 512                         pctx.group = i;
 513                         pctx.ino = fs->group_desc[i].bg_used_dirs_count;
 514                         pctx.ino2 = dir_array[i];
 515
 516                         if (fix_problem(ctx, PR_5_FREE_DIR_COUNT_GROUP,
 517                                         &pctx)) {
 518                                 fs->group_desc[i].bg_used_dirs_count =
 519                                         dir_array[i];
 520                                 ext2fs_mark_super_dirty(fs);
 521                         } else
 522                                 ext2fs_unmark_valid(fs);
 523                 }
 524         }
 525         if (free_inodes != fs->super->s_free_inodes_count) {
 526                 pctx.group = -1;
 527                 pctx.ino = fs->super->s_free_inodes_count;
 528                 pctx.ino2 = free_inodes;
 529
 530                 if (fix_problem(ctx, PR_5_FREE_INODE_COUNT, &pctx)) {
 531                         fs->super->s_free_inodes_count = free_inodes;
 532                         ext2fs_mark_super_dirty(fs);
 533                 } else
 534                         ext2fs_unmark_valid(fs);
 535         }
 536 errout:
 537         ext2fs_free_mem(&free_array);
 538         ext2fs_free_mem(&dir_array);
 539 }
 540
 541 static void check_inode_end(e2fsck_t ctx)
 542 {
 543         ext2_filsys fs = ctx->fs;
 544         ext2_ino_t      end, save_inodes_count, i;
 545         struct problem_context  pctx;
 546
 547         clear_problem_context(&pctx);
 548
 549         end = EXT2_INODES_PER_GROUP(fs->super) * fs->group_desc_count;
 550         pctx.errcode = ext2fs_fudge_inode_bitmap_end(fs->inode_map, end,
 551                                                      &save_inodes_count);
 552         if (pctx.errcode) {
 553                 pctx.num = 1;
 554                 fix_problem(ctx, PR_5_FUDGE_BITMAP_ERROR, &pctx);
 555                 ctx->flags |= E2F_FLAG_ABORT; /* fatal */
 556                 return;
 557         }
 558         if (save_inodes_count == end)
 559                 return;
 560
 561         /* protect loop from wrap-around if end is maxed */
 562         for (i = save_inodes_count + 1; i <= end && i > save_inodes_count; i++) {
 563                 if (!ext2fs_test_inode_bitmap(fs->inode_map, i)) {
 564                         if (fix_problem(ctx, PR_5_INODE_BMAP_PADDING, &pctx)) {
 565                                 for (i = save_inodes_count + 1; i <= end; i++)
 566                                         ext2fs_mark_inode_bitmap(fs->inode_map,
 567                                                                  i);
 568                                 ext2fs_mark_ib_dirty(fs);
 569                         } else
 570                                 ext2fs_unmark_valid(fs);
 571                         break;
 572                 }
 573         }
 574
 575         pctx.errcode = ext2fs_fudge_inode_bitmap_end(fs->inode_map,
 576                                                      save_inodes_count, 0);
 577         if (pctx.errcode) {
 578                 pctx.num = 2;
 579                 fix_problem(ctx, PR_5_FUDGE_BITMAP_ERROR, &pctx);
 580                 ctx->flags |= E2F_FLAG_ABORT; /* fatal */
 581                 return;
 582         }
 583 }
 584
 585 static void check_block_end(e2fsck_t ctx)
 586 {
 587         ext2_filsys fs = ctx->fs;
 588         blk_t   end, save_blocks_count, i;
 589         struct problem_context  pctx;
 590
 591         clear_problem_context(&pctx);
 592
 593         end = ext2fs_get_block_bitmap_start(fs->block_map) +
 594                 (EXT2_BLOCKS_PER_GROUP(fs->super) * fs->group_desc_count) - 1;
 595         pctx.errcode = ext2fs_fudge_block_bitmap_end(fs->block_map, end,
 596                                                      &save_blocks_count);
 597         if (pctx.errcode) {
 598                 pctx.num = 3;
 599                 fix_problem(ctx, PR_5_FUDGE_BITMAP_ERROR, &pctx);
 600                 ctx->flags |= E2F_FLAG_ABORT; /* fatal */
 601                 return;
 602         }
 603         if (save_blocks_count == end)
 604                 return;
 605
 606         /* Protect loop from wrap-around if end is maxed */
 607         for (i = save_blocks_count + 1; i <= end && i > save_blocks_count; i++) {
 608                 if (!ext2fs_test_block_bitmap(fs->block_map, i)) {
 609                         if (fix_problem(ctx, PR_5_BLOCK_BMAP_PADDING, &pctx)) {
 610                                 for (i = save_blocks_count + 1; i <= end; i++)
 611                                         ext2fs_mark_block_bitmap(fs->block_map,
 612                                                                  i);
 613                                 ext2fs_mark_bb_dirty(fs);
 614                         } else
 615                                 ext2fs_unmark_valid(fs);
 616                         break;
 617                 }
 618         }
 619
 620         pctx.errcode = ext2fs_fudge_block_bitmap_end(fs->block_map,
 621                                                      save_blocks_count, 0);
 622         if (pctx.errcode) {
 623                 pctx.num = 4;
 624                 fix_problem(ctx, PR_5_FUDGE_BITMAP_ERROR, &pctx);
 625                 ctx->flags |= E2F_FLAG_ABORT; /* fatal */
 626                 return;
 627         }
 628 }
 629
 630
 631