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         init_resource_track(&rtrack, ctx->fs->io);
  33         clear_problem_context(&pctx);
  34
  35         if (!(ctx->options & E2F_OPT_PREEN))
  36                 fix_problem(ctx, PR_5_PASS_HEADER, &pctx);
  37
  38         if (ctx->progress)
  39                 if ((ctx->progress)(ctx, 5, 0, ctx->fs->group_desc_count*2))
  40                         return;
  41
  42         e2fsck_read_bitmaps(ctx);
  43
  44         check_block_bitmaps(ctx);
  45         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
  46                 return;
  47         check_inode_bitmaps(ctx);
  48         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
  49                 return;
  50         check_inode_end(ctx);
  51         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
  52                 return;
  53         check_block_end(ctx);
  54         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
  55                 return;
  56
  57         ext2fs_free_inode_bitmap(ctx->inode_used_map);
  58         ctx->inode_used_map = 0;
  59         ext2fs_free_inode_bitmap(ctx->inode_dir_map);
  60         ctx->inode_dir_map = 0;
  61         ext2fs_free_block_bitmap(ctx->block_found_map);
  62         ctx->block_found_map = 0;
  63
  64         print_resource_track(ctx, _("Pass 5"), &rtrack, ctx->fs->io);
  65 }
  66
  67 #define NO_BLK ((blk64_t) -1)
  68
  69 static void print_bitmap_problem(e2fsck_t ctx, int problem,
  70                             struct problem_context *pctx)
  71 {
  72         switch (problem) {
  73         case PR_5_BLOCK_UNUSED:
  74                 if (pctx->blk == pctx->blk2)
  75                         pctx->blk2 = 0;
  76                 else
  77                         problem = PR_5_BLOCK_RANGE_UNUSED;
  78                 break;
  79         case PR_5_BLOCK_USED:
  80                 if (pctx->blk == pctx->blk2)
  81                         pctx->blk2 = 0;
  82                 else
  83                         problem = PR_5_BLOCK_RANGE_USED;
  84                 break;
  85         case PR_5_INODE_UNUSED:
  86                 if (pctx->ino == pctx->ino2)
  87                         pctx->ino2 = 0;
  88                 else
  89                         problem = PR_5_INODE_RANGE_UNUSED;
  90                 break;
  91         case PR_5_INODE_USED:
  92                 if (pctx->ino == pctx->ino2)
  93                         pctx->ino2 = 0;
  94                 else
  95                         problem = PR_5_INODE_RANGE_USED;
  96                 break;
  97         }
  98         fix_problem(ctx, problem, pctx);
  99         pctx->blk = pctx->blk2 = NO_BLK;
 100         pctx->ino = pctx->ino2 = 0;
 101 }
 102
 103 static void check_block_bitmaps(e2fsck_t ctx)
 104 {
 105         ext2_filsys fs = ctx->fs;
 106         blk64_t i;
 107         int     *free_array;
 108         int     group = 0;
 109         int     blocks = 0;
 110         blk64_t free_blocks = 0;
 111         int     group_free = 0;
 112         int     actual, bitmap;
 113         struct problem_context  pctx;
 114         int     problem, save_problem, fixit, had_problem;
 115         errcode_t       retval;
 116         int             csum_flag;
 117         int             skip_group = 0;
 118         int     old_desc_blocks = 0;
 119         int     count = 0;
 120         int     cmp_block = 0;
 121         int     redo_flag = 0;
 122         blk64_t super_blk, old_desc_blk, new_desc_blk;
 123
 124         clear_problem_context(&pctx);
 125         free_array = (int *) e2fsck_allocate_memory(ctx,
 126             fs->group_desc_count * sizeof(int), "free block count array");
 127
 128         if ((fs->super->s_first_data_block <
 129              ext2fs_get_block_bitmap_start2(ctx->block_found_map)) ||
 130             (ext2fs_blocks_count(fs->super)-1 >
 131              ext2fs_get_block_bitmap_end2(ctx->block_found_map))) {
 132                 pctx.num = 1;
 133                 pctx.blk = fs->super->s_first_data_block;
 134                 pctx.blk2 = ext2fs_blocks_count(fs->super) -1;
 135                 pctx.ino = ext2fs_get_block_bitmap_start2(ctx->block_found_map);
 136                 pctx.ino2 = ext2fs_get_block_bitmap_end2(ctx->block_found_map);
 137                 fix_problem(ctx, PR_5_BMAP_ENDPOINTS, &pctx);
 138
 139                 ctx->flags |= E2F_FLAG_ABORT; /* fatal */
 140                 goto errout;
 141         }
 142
 143         if ((fs->super->s_first_data_block <
 144              ext2fs_get_block_bitmap_start2(fs->block_map)) ||
 145             (ext2fs_blocks_count(fs->super)-1 >
 146              ext2fs_get_block_bitmap_end2(fs->block_map))) {
 147                 pctx.num = 2;
 148                 pctx.blk = fs->super->s_first_data_block;
 149                 pctx.blk2 = ext2fs_blocks_count(fs->super) -1;
 150                 pctx.ino = ext2fs_get_block_bitmap_start2(fs->block_map);
 151                 pctx.ino2 = ext2fs_get_block_bitmap_end2(fs->block_map);
 152                 fix_problem(ctx, PR_5_BMAP_ENDPOINTS, &pctx);
 153
 154                 ctx->flags |= E2F_FLAG_ABORT; /* fatal */
 155                 goto errout;
 156         }
 157
 158         csum_flag = EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
 159                                                EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
 160 redo_counts:
 161         had_problem = 0;
 162         save_problem = 0;
 163         pctx.blk = pctx.blk2 = NO_BLK;
 164         if (csum_flag &&
 165             (ext2fs_bg_flags_test(fs, group, EXT2_BG_BLOCK_UNINIT)))
 166                 skip_group++;
 167         for (i = fs->super->s_first_data_block;
 168              i < ext2fs_blocks_count(fs->super);
 169              i++) {
 170                 actual = ext2fs_fast_test_block_bitmap2(ctx->block_found_map, i);
 171
 172                 if (skip_group) {
 173                         if ((i - fs->super->s_first_data_block) %
 174                             fs->super->s_blocks_per_group == 0) {
 175                                 super_blk = 0;
 176                                 old_desc_blk = 0;
 177                                 new_desc_blk = 0;
 178                                 ext2fs_super_and_bgd_loc2(fs, group, &super_blk,
 179                                          &old_desc_blk, &new_desc_blk, 0);
 180
 181                                 if (fs->super->s_feature_incompat &
 182                                                 EXT2_FEATURE_INCOMPAT_META_BG)
 183                                         old_desc_blocks =
 184                                                 fs->super->s_first_meta_bg;
 185                                 else
 186                                         old_desc_blocks = fs->desc_blocks +
 187                                         fs->super->s_reserved_gdt_blocks;
 188
 189                                 count = 0;
 190                                 cmp_block = fs->super->s_blocks_per_group;
 191                                 if (group == (int)fs->group_desc_count - 1)
 192                                         cmp_block =
 193                                                 ext2fs_blocks_count(fs->super) %
 194                                                 fs->super->s_blocks_per_group;
 195                         }
 196
 197                         bitmap = 0;
 198                         if ((i == super_blk) ||
 199                             (old_desc_blk && old_desc_blocks &&
 200                              (i >= old_desc_blk) &&
 201                              (i < old_desc_blk + old_desc_blocks)) ||
 202                             (new_desc_blk && (i == new_desc_blk)) ||
 203                             (i == ext2fs_block_bitmap_loc(fs, group)) ||
 204                             (i == ext2fs_inode_bitmap_loc(fs, group)) ||
 205                             (i >= ext2fs_inode_table_loc(fs, group) &&
 206                              (i < ext2fs_inode_table_loc(fs, group) +
 207                               fs->inode_blocks_per_group))) {
 208                                 bitmap = 1;
 209                                 actual = (actual != 0);
 210                                 count++;
 211                                 cmp_block--;
 212                         } else if ((i - count - fs->super->s_first_data_block) %
 213                                   fs->super->s_blocks_per_group == 0) {
 214                                 /*
 215                                  * When the compare data blocks in block bitmap
 216                                  * are 0, count the free block,
 217                                  * skip the current block group.
 218                                  */
 219                                 if (ext2fs_test_block_bitmap_range2(
 220                                             ctx->block_found_map, i,
 221                                             cmp_block)) {
 222                                         /*
 223                                          * -1 means to skip the current block
 224                                          * group.
 225                                          */
 226                                         blocks = fs->super->s_blocks_per_group
 227                                                                         - 1;
 228                                         group_free = cmp_block;
 229                                         free_blocks += cmp_block;
 230                                         /*
 231                                          * The current block group's last block
 232                                          * is set to i.
 233                                          */
 234                                         i += cmp_block - 1;
 235                                         bitmap = 1;
 236                                         goto do_counts;
 237                                 }
 238                         }
 239                 } else if (redo_flag)
 240                         bitmap = actual;
 241                 else
 242                         bitmap = ext2fs_fast_test_block_bitmap2(fs->block_map, i);
 243
 244                 if (actual == bitmap)
 245                         goto do_counts;
 246
 247                 if (!actual && bitmap) {
 248                         /*
 249                          * Block not used, but marked in use in the bitmap.
 250                          */
 251                         problem = PR_5_BLOCK_UNUSED;
 252                 } else {
 253                         /*
 254                          * Block used, but not marked in use in the bitmap.
 255                          */
 256                         problem = PR_5_BLOCK_USED;
 257
 258                         if (skip_group) {
 259                                 struct problem_context pctx2;
 260                                 pctx2.blk = i;
 261                                 pctx2.group = group;
 262                                 if (fix_problem(ctx, PR_5_BLOCK_UNINIT,&pctx2)){
 263                                         ext2fs_bg_flags_clear(fs, group, EXT2_BG_BLOCK_UNINIT);
 264                                         skip_group = 0;
 265                                 }
 266                         }
 267                 }
 268                 if (pctx.blk == NO_BLK) {
 269                         pctx.blk = pctx.blk2 = i;
 270                         save_problem = problem;
 271                 } else {
 272                         if ((problem == save_problem) &&
 273                             (pctx.blk2 == i-1))
 274                                 pctx.blk2++;
 275                         else {
 276                                 print_bitmap_problem(ctx, save_problem, &pctx);
 277                                 pctx.blk = pctx.blk2 = i;
 278                                 save_problem = problem;
 279                         }
 280                 }
 281                 ctx->flags |= E2F_FLAG_PROG_SUPPRESS;
 282                 had_problem++;
 283
 284         do_counts:
 285                 if (!bitmap && (!skip_group || csum_flag)) {
 286                         group_free++;
 287                         free_blocks++;
 288                 }
 289                 blocks ++;
 290                 if ((blocks == fs->super->s_blocks_per_group) ||
 291                     (i == ext2fs_blocks_count(fs->super)-1)) {
 292                         free_array[group] = group_free;
 293                         group ++;
 294                         blocks = 0;
 295                         group_free = 0;
 296                         skip_group = 0;
 297                         if (ctx->progress)
 298                                 if ((ctx->progress)(ctx, 5, group,
 299                                                     fs->group_desc_count*2))
 300                                         goto errout;
 301                         if (csum_flag &&
 302                             (i != ext2fs_blocks_count(fs->super)-1) &&
 303                             ext2fs_bg_flags_test(fs, group,
 304                                                 EXT2_BG_BLOCK_UNINIT))
 305                                 skip_group++;
 306                 }
 307         }
 308         if (pctx.blk != NO_BLK)
 309                 print_bitmap_problem(ctx, save_problem, &pctx);
 310         if (had_problem)
 311                 fixit = end_problem_latch(ctx, PR_LATCH_BBITMAP);
 312         else
 313                 fixit = -1;
 314         ctx->flags &= ~E2F_FLAG_PROG_SUPPRESS;
 315
 316         if (fixit == 1) {
 317                 ext2fs_free_block_bitmap(fs->block_map);
 318                 retval = ext2fs_copy_bitmap(ctx->block_found_map,
 319                                                   &fs->block_map);
 320                 if (retval) {
 321                         clear_problem_context(&pctx);
 322                         fix_problem(ctx, PR_5_COPY_BBITMAP_ERROR, &pctx);
 323                         ctx->flags |= E2F_FLAG_ABORT;
 324                         goto errout;
 325                 }
 326                 ext2fs_set_bitmap_padding(fs->block_map);
 327                 ext2fs_mark_bb_dirty(fs);
 328
 329                 /* Redo the counts */
 330                 blocks = 0; free_blocks = 0; group_free = 0; group = 0;
 331                 memset(free_array, 0, fs->group_desc_count * sizeof(int));
 332                 redo_flag++;
 333                 goto redo_counts;
 334         } else if (fixit == 0)
 335                 ext2fs_unmark_valid(fs);
 336
 337         for (i = 0; i < fs->group_desc_count; i++) {
 338                 if (free_array[i] != ext2fs_bg_free_blocks_count(fs, i)) {
 339                         pctx.group = i;
 340                         pctx.blk = ext2fs_bg_free_blocks_count(fs, i);
 341                         pctx.blk2 = free_array[i];
 342
 343                         if (fix_problem(ctx, PR_5_FREE_BLOCK_COUNT_GROUP,
 344                                         &pctx)) {
 345                                 ext2fs_bg_free_blocks_count_set(fs, i, free_array[i]);
 346                                 ext2fs_mark_super_dirty(fs);
 347                         } else
 348                                 ext2fs_unmark_valid(fs);
 349                 }
 350         }
 351         if (free_blocks != ext2fs_free_blocks_count(fs->super)) {
 352                 pctx.group = 0;
 353                 pctx.blk = ext2fs_free_blocks_count(fs->super);
 354                 pctx.blk2 = free_blocks;
 355
 356                 if (fix_problem(ctx, PR_5_FREE_BLOCK_COUNT, &pctx)) {
 357                         ext2fs_free_blocks_count_set(fs->super, free_blocks);
 358                         ext2fs_mark_super_dirty(fs);
 359                 } else
 360                         ext2fs_unmark_valid(fs);
 361         }
 362 errout:
 363         ext2fs_free_mem(&free_array);
 364 }
 365
 366 static void check_inode_bitmaps(e2fsck_t ctx)
 367 {
 368         ext2_filsys fs = ctx->fs;
 369         ext2_ino_t      i;
 370         unsigned int    free_inodes = 0;
 371         int             group_free = 0;
 372         int             dirs_count = 0;
 373         int             group = 0;
 374         unsigned int    inodes = 0;
 375         int             *free_array;
 376         int             *dir_array;
 377         int             actual, bitmap;
 378         errcode_t       retval;
 379         struct problem_context  pctx;
 380         int             problem, save_problem, fixit, had_problem;
 381         int             csum_flag;
 382         int             skip_group = 0;
 383         int             redo_flag = 0;
 384
 385         clear_problem_context(&pctx);
 386         free_array = (int *) e2fsck_allocate_memory(ctx,
 387             fs->group_desc_count * sizeof(int), "free inode count array");
 388
 389         dir_array = (int *) e2fsck_allocate_memory(ctx,
 390            fs->group_desc_count * sizeof(int), "directory count array");
 391
 392         if ((1 < ext2fs_get_inode_bitmap_start2(ctx->inode_used_map)) ||
 393             (fs->super->s_inodes_count >
 394              ext2fs_get_inode_bitmap_end2(ctx->inode_used_map))) {
 395                 pctx.num = 3;
 396                 pctx.blk = 1;
 397                 pctx.blk2 = fs->super->s_inodes_count;
 398                 pctx.ino = ext2fs_get_inode_bitmap_start2(ctx->inode_used_map);
 399                 pctx.ino2 = ext2fs_get_inode_bitmap_end2(ctx->inode_used_map);
 400                 fix_problem(ctx, PR_5_BMAP_ENDPOINTS, &pctx);
 401
 402                 ctx->flags |= E2F_FLAG_ABORT; /* fatal */
 403                 goto errout;
 404         }
 405         if ((1 < ext2fs_get_inode_bitmap_start2(fs->inode_map)) ||
 406             (fs->super->s_inodes_count >
 407              ext2fs_get_inode_bitmap_end2(fs->inode_map))) {
 408                 pctx.num = 4;
 409                 pctx.blk = 1;
 410                 pctx.blk2 = fs->super->s_inodes_count;
 411                 pctx.ino = ext2fs_get_inode_bitmap_start2(fs->inode_map);
 412                 pctx.ino2 = ext2fs_get_inode_bitmap_end2(fs->inode_map);
 413                 fix_problem(ctx, PR_5_BMAP_ENDPOINTS, &pctx);
 414
 415                 ctx->flags |= E2F_FLAG_ABORT; /* fatal */
 416                 goto errout;
 417         }
 418
 419         csum_flag = EXT2_HAS_RO_COMPAT_FEATURE(fs->super,
 420                                                EXT4_FEATURE_RO_COMPAT_GDT_CSUM);
 421 redo_counts:
 422         had_problem = 0;
 423         save_problem = 0;
 424         pctx.ino = pctx.ino2 = 0;
 425         if (csum_flag &&
 426             (ext2fs_bg_flags_test(fs, group, EXT2_BG_INODE_UNINIT)))
 427                 skip_group++;
 428
 429         /* Protect loop from wrap-around if inodes_count is maxed */
 430         for (i = 1; i <= fs->super->s_inodes_count && i > 0; i++) {
 431                 bitmap = 0;
 432                 if (skip_group &&
 433                     i % fs->super->s_inodes_per_group == 1) {
 434                         /*
 435                          * Current inode is the first inode
 436                          * in the current block group.
 437                          */
 438                         if (ext2fs_test_inode_bitmap_range(
 439                                     ctx->inode_used_map, i,
 440                                     fs->super->s_inodes_per_group)) {
 441                                 /*
 442                                  * When the compared inodes in inodes bitmap
 443                                  * are 0, count the free inode,
 444                                  * skip the current block group.
 445                                  */
 446                                 inodes = fs->super->s_inodes_per_group - 1;
 447                                 group_free = inodes;
 448                                 free_inodes += inodes;
 449                                 i += inodes;
 450                                 skip_group = 0;
 451                                 goto do_counts;
 452                         }
 453                 }
 454
 455                 actual = ext2fs_fast_test_inode_bitmap2(ctx->inode_used_map, i);
 456                 if (redo_flag)
 457                         bitmap = actual;
 458                 else if (!skip_group)
 459                         bitmap = ext2fs_fast_test_inode_bitmap2(fs->inode_map, i);
 460                 if (actual == bitmap)
 461                         goto do_counts;
 462
 463                 if (!actual && bitmap) {
 464                         /*
 465                          * Inode wasn't used, but marked in bitmap
 466                          */
 467                         problem = PR_5_INODE_UNUSED;
 468                 } else /* if (actual && !bitmap) */ {
 469                         /*
 470                          * Inode used, but not in bitmap
 471                          */
 472                         problem = PR_5_INODE_USED;
 473
 474                         /* We should never hit this, because it means that
 475                          * inodes were marked in use that weren't noticed
 476                          * in pass1 or pass 2. It is easier to fix the problem
 477                          * than to kill e2fsck and leave the user stuck. */
 478                         if (skip_group) {
 479                                 struct problem_context pctx2;
 480                                 pctx2.blk = i;
 481                                 pctx2.group = group;
 482                                 if (fix_problem(ctx, PR_5_INODE_UNINIT,&pctx2)){
 483                                         ext2fs_bg_flags_clear(fs, group, EXT2_BG_INODE_UNINIT);
 484                                         skip_group = 0;
 485                                 }
 486                         }
 487                 }
 488                 if (pctx.ino == 0) {
 489                         pctx.ino = pctx.ino2 = i;
 490                         save_problem = problem;
 491                 } else {
 492                         if ((problem == save_problem) &&
 493                             (pctx.ino2 == i-1))
 494                                 pctx.ino2++;
 495                         else {
 496                                 print_bitmap_problem(ctx, save_problem, &pctx);
 497                                 pctx.ino = pctx.ino2 = i;
 498                                 save_problem = problem;
 499                         }
 500                 }
 501                 ctx->flags |= E2F_FLAG_PROG_SUPPRESS;
 502                 had_problem++;
 503
 504 do_counts:
 505                 if (bitmap) {
 506                         if (ext2fs_test_inode_bitmap2(ctx->inode_dir_map, i))
 507                                 dirs_count++;
 508                 } else if (!skip_group || csum_flag) {
 509                         group_free++;
 510                         free_inodes++;
 511                 }
 512                 inodes++;
 513                 if ((inodes == fs->super->s_inodes_per_group) ||
 514                     (i == fs->super->s_inodes_count)) {
 515                         free_array[group] = group_free;
 516                         dir_array[group] = dirs_count;
 517                         group ++;
 518                         inodes = 0;
 519                         skip_group = 0;
 520                         group_free = 0;
 521                         dirs_count = 0;
 522                         if (ctx->progress)
 523                                 if ((ctx->progress)(ctx, 5,
 524                                             group + fs->group_desc_count,
 525                                             fs->group_desc_count*2))
 526                                         goto errout;
 527                         if (csum_flag &&
 528                             (i != fs->super->s_inodes_count) &&
 529                             (ext2fs_bg_flags_test(fs, group, EXT2_BG_INODE_UNINIT)
 530                              ))
 531                                 skip_group++;
 532                 }
 533         }
 534         if (pctx.ino)
 535                 print_bitmap_problem(ctx, save_problem, &pctx);
 536
 537         if (had_problem)
 538                 fixit = end_problem_latch(ctx, PR_LATCH_IBITMAP);
 539         else
 540                 fixit = -1;
 541         ctx->flags &= ~E2F_FLAG_PROG_SUPPRESS;
 542
 543         if (fixit == 1) {
 544                 ext2fs_free_inode_bitmap(fs->inode_map);
 545                 retval = ext2fs_copy_bitmap(ctx->inode_used_map,
 546                                                   &fs->inode_map);
 547                 if (retval) {
 548                         clear_problem_context(&pctx);
 549                         fix_problem(ctx, PR_5_COPY_IBITMAP_ERROR, &pctx);
 550                         ctx->flags |= E2F_FLAG_ABORT;
 551                         goto errout;
 552                 }
 553                 ext2fs_set_bitmap_padding(fs->inode_map);
 554                 ext2fs_mark_ib_dirty(fs);
 555
 556                 /* redo counts */
 557                 inodes = 0; free_inodes = 0; group_free = 0;
 558                 dirs_count = 0; group = 0;
 559                 memset(free_array, 0, fs->group_desc_count * sizeof(int));
 560                 memset(dir_array, 0, fs->group_desc_count * sizeof(int));
 561                 redo_flag++;
 562                 goto redo_counts;
 563         } else if (fixit == 0)
 564                 ext2fs_unmark_valid(fs);
 565
 566         for (i = 0; i < fs->group_desc_count; i++) {
 567                 if (free_array[i] != ext2fs_bg_free_inodes_count(fs, i)) {
 568                         pctx.group = i;
 569                         pctx.ino = ext2fs_bg_free_inodes_count(fs, i);
 570                         pctx.ino2 = free_array[i];
 571                         if (fix_problem(ctx, PR_5_FREE_INODE_COUNT_GROUP,
 572                                         &pctx)) {
 573                                 ext2fs_bg_free_inodes_count_set(fs, i, free_array[i]);
 574                                 ext2fs_mark_super_dirty(fs);
 575                         } else
 576                                 ext2fs_unmark_valid(fs);
 577                 }
 578                 if (dir_array[i] != ext2fs_bg_used_dirs_count(fs, i)) {
 579                         pctx.group = i;
 580                         pctx.ino = ext2fs_bg_used_dirs_count(fs, i);
 581                         pctx.ino2 = dir_array[i];
 582
 583                         if (fix_problem(ctx, PR_5_FREE_DIR_COUNT_GROUP,
 584                                         &pctx)) {
 585                                 ext2fs_bg_used_dirs_count_set(fs, i, dir_array[i]);
 586                                 ext2fs_mark_super_dirty(fs);
 587                         } else
 588                                 ext2fs_unmark_valid(fs);
 589                 }
 590         }
 591         if (free_inodes != fs->super->s_free_inodes_count) {
 592                 pctx.group = -1;
 593                 pctx.ino = fs->super->s_free_inodes_count;
 594                 pctx.ino2 = free_inodes;
 595
 596                 if (fix_problem(ctx, PR_5_FREE_INODE_COUNT, &pctx)) {
 597                         fs->super->s_free_inodes_count = free_inodes;
 598                         ext2fs_mark_super_dirty(fs);
 599                 } else
 600                         ext2fs_unmark_valid(fs);
 601         }
 602 errout:
 603         ext2fs_free_mem(&free_array);
 604         ext2fs_free_mem(&dir_array);
 605 }
 606
 607 static void check_inode_end(e2fsck_t ctx)
 608 {
 609         ext2_filsys fs = ctx->fs;
 610         ext2_ino_t      end, save_inodes_count, i;
 611         struct problem_context  pctx;
 612
 613         clear_problem_context(&pctx);
 614
 615         end = EXT2_INODES_PER_GROUP(fs->super) * fs->group_desc_count;
 616         pctx.errcode = ext2fs_fudge_inode_bitmap_end(fs->inode_map, end,
 617                                                      &save_inodes_count);
 618         if (pctx.errcode) {
 619                 pctx.num = 1;
 620                 fix_problem(ctx, PR_5_FUDGE_BITMAP_ERROR, &pctx);
 621                 ctx->flags |= E2F_FLAG_ABORT; /* fatal */
 622                 return;
 623         }
 624         if (save_inodes_count == end)
 625                 return;
 626
 627         /* protect loop from wrap-around if end is maxed */
 628         for (i = save_inodes_count + 1; i <= end && i > save_inodes_count; i++) {
 629                 if (!ext2fs_test_inode_bitmap(fs->inode_map, i)) {
 630                         if (fix_problem(ctx, PR_5_INODE_BMAP_PADDING, &pctx)) {
 631                                 for (; i <= end; i++)
 632                                         ext2fs_mark_inode_bitmap(fs->inode_map,
 633                                                                  i);
 634                                 ext2fs_mark_ib_dirty(fs);
 635                         } else
 636                                 ext2fs_unmark_valid(fs);
 637                         break;
 638                 }
 639         }
 640
 641         pctx.errcode = ext2fs_fudge_inode_bitmap_end(fs->inode_map,
 642                                                      save_inodes_count, 0);
 643         if (pctx.errcode) {
 644                 pctx.num = 2;
 645                 fix_problem(ctx, PR_5_FUDGE_BITMAP_ERROR, &pctx);
 646                 ctx->flags |= E2F_FLAG_ABORT; /* fatal */
 647                 return;
 648         }
 649 }
 650
 651 static void check_block_end(e2fsck_t ctx)
 652 {
 653         ext2_filsys fs = ctx->fs;
 654         blk64_t end, save_blocks_count, i;
 655         struct problem_context  pctx;
 656
 657         clear_problem_context(&pctx);
 658
 659         end = ext2fs_get_block_bitmap_start2(fs->block_map) +
 660                 ((blk64_t)EXT2_BLOCKS_PER_GROUP(fs->super) * fs->group_desc_count) - 1;
 661         pctx.errcode = ext2fs_fudge_block_bitmap_end2(fs->block_map, end,
 662                                                      &save_blocks_count);
 663         if (pctx.errcode) {
 664                 pctx.num = 3;
 665                 fix_problem(ctx, PR_5_FUDGE_BITMAP_ERROR, &pctx);
 666                 ctx->flags |= E2F_FLAG_ABORT; /* fatal */
 667                 return;
 668         }
 669         if (save_blocks_count == end)
 670                 return;
 671
 672         /* Protect loop from wrap-around if end is maxed */
 673         for (i = save_blocks_count + 1; i <= end && i > save_blocks_count; i++) {
 674                 if (!ext2fs_test_block_bitmap2(fs->block_map, i)) {
 675                         if (fix_problem(ctx, PR_5_BLOCK_BMAP_PADDING, &pctx)) {
 676                                 for (; i <= end; i++)
 677                                         ext2fs_mark_block_bitmap2(fs->block_map,
 678                                                                   i);
 679                                 ext2fs_mark_bb_dirty(fs);
 680                         } else
 681                                 ext2fs_unmark_valid(fs);
 682                         break;
 683                 }
 684         }
 685
 686         pctx.errcode = ext2fs_fudge_block_bitmap_end2(fs->block_map,
 687                                                      save_blocks_count, 0);
 688         if (pctx.errcode) {
 689                 pctx.num = 4;
 690                 fix_problem(ctx, PR_5_FUDGE_BITMAP_ERROR, &pctx);
 691                 ctx->flags |= E2F_FLAG_ABORT; /* fatal */
 692                 return;
 693         }
 694 }
 695
 696
 697