e2fsck/pass1.c

   1 /*
   2  * pass1.c -- pass #1 of e2fsck: sequential scan of the inode table
   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  * Pass 1 of e2fsck iterates over all the inodes in the filesystems,
  12  * and applies the following tests to each inode:
  13  *
  14  *      - The mode field of the inode must be legal.
  15  *      - The size and block count fields of the inode are correct.
  16  *      - A data block must not be used by another inode
  17  *
  18  * Pass 1 also gathers the collects the following information:
  19  *
  20  *      - A bitmap of which inodes are in use.          (inode_used_map)
  21  *      - A bitmap of which inodes are directories.     (inode_dir_map)
  22  *      - A bitmap of which inodes are regular files.   (inode_reg_map)
  23  *      - A bitmap of which inodes have bad fields.     (inode_bad_map)
  24  *      - A bitmap of which inodes are in bad blocks.   (inode_bb_map)
  25  *      - A bitmap of which inodes are imagic inodes.   (inode_imagic_map)
  26  *      - A bitmap of which inodes are casefolded.      (inode_casefold_map)
  27  *      - A bitmap of which blocks are in use.          (block_found_map)
  28  *      - A bitmap of which blocks are in use by two inodes     (block_dup_map)
  29  *      - The data blocks of the directory inodes.      (dir_map)
  30  *      - Ref counts for ea_inodes.                     (ea_inode_refs)
  31  *      - The encryption policy ID of each encrypted inode. (encrypted_files)
  32  *
  33  * Pass 1 is designed to stash away enough information so that the
  34  * other passes should not need to read in the inode information
  35  * during the normal course of a filesystem check.  (Although if an
  36  * inconsistency is detected, other passes may need to read in an
  37  * inode to fix it.)
  38  *
  39  * Note that pass 1B will be invoked if there are any duplicate blocks
  40  * found.
  41  */
  42
  43 #define _GNU_SOURCE 1 /* get strnlen() */
  44 #include "config.h"
  45 #include <string.h>
  46 #include <time.h>
  47 #ifdef HAVE_ERRNO_H
  48 #include <errno.h>
  49 #endif
  50
  51 #include "e2fsck.h"
  52 #include <ext2fs/ext2_ext_attr.h>
  53 #include <e2p/e2p.h>
  54
  55 #include "problem.h"
  56
  57 #ifdef NO_INLINE_FUNCS
  58 #define _INLINE_
  59 #else
  60 #define _INLINE_ inline
  61 #endif
  62
  63 #undef DEBUG
  64
  65 struct ea_quota {
  66         blk64_t blocks;
  67         __u64 inodes;
  68 };
  69
  70 static int process_block(ext2_filsys fs, blk64_t        *blocknr,
  71                          e2_blkcnt_t blockcnt, blk64_t ref_blk,
  72                          int ref_offset, void *priv_data);
  73 static int process_bad_block(ext2_filsys fs, blk64_t *block_nr,
  74                              e2_blkcnt_t blockcnt, blk64_t ref_blk,
  75                              int ref_offset, void *priv_data);
  76 static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
  77                          char *block_buf,
  78                          const struct ea_quota *ea_ibody_quota);
  79 static void mark_table_blocks(e2fsck_t ctx);
  80 static void alloc_bb_map(e2fsck_t ctx);
  81 static void alloc_imagic_map(e2fsck_t ctx);
  82 static void mark_inode_bad(e2fsck_t ctx, ino_t ino);
  83 static void add_casefolded_dir(e2fsck_t ctx, ino_t ino);
  84 static void handle_fs_bad_blocks(e2fsck_t ctx);
  85 static void process_inodes(e2fsck_t ctx, char *block_buf);
  86 static EXT2_QSORT_TYPE process_inode_cmp(const void *a, const void *b);
  87 static errcode_t scan_callback(ext2_filsys fs, ext2_inode_scan scan,
  88                                   dgrp_t group, void * priv_data);
  89 static void adjust_extattr_refcount(e2fsck_t ctx, ext2_refcount_t refcount,
  90                                     char *block_buf, int adjust_sign);
  91 /* static char *describe_illegal_block(ext2_filsys fs, blk64_t block); */
  92
  93 struct process_block_struct {
  94         ext2_ino_t      ino;
  95         unsigned        is_dir:1, is_reg:1, clear:1, suppress:1,
  96                                 fragmented:1, compressed:1, bbcheck:1,
  97                                 inode_modified:1;
  98         blk64_t         num_blocks;
  99         blk64_t         max_blocks;
 100         blk64_t         last_block;
 101         e2_blkcnt_t     last_init_lblock;
 102         e2_blkcnt_t     last_db_block;
 103         int             num_illegal_blocks;
 104         blk64_t         previous_block;
 105         struct ext2_inode *inode;
 106         struct problem_context *pctx;
 107         ext2fs_block_bitmap fs_meta_blocks;
 108         e2fsck_t        ctx;
 109         blk64_t         next_lblock;
 110         struct extent_tree_info eti;
 111 };
 112
 113 struct process_inode_block {
 114         ext2_ino_t ino;
 115         struct ea_quota ea_ibody_quota;
 116         struct ext2_inode_large inode;
 117 };
 118
 119 struct scan_callback_struct {
 120         e2fsck_t        ctx;
 121         char            *block_buf;
 122 };
 123
 124 /*
 125  * For the inodes to process list.
 126  */
 127 static struct process_inode_block *inodes_to_process;
 128 static int process_inode_count;
 129
 130 static __u64 ext2_max_sizes[EXT2_MAX_BLOCK_LOG_SIZE -
 131                             EXT2_MIN_BLOCK_LOG_SIZE + 1];
 132
 133 /*
 134  * Check to make sure a device inode is real.  Returns 1 if the device
 135  * checks out, 0 if not.
 136  *
 137  * Note: this routine is now also used to check FIFO's and Sockets,
 138  * since they have the same requirement; the i_block fields should be
 139  * zero.
 140  */
 141 int e2fsck_pass1_check_device_inode(ext2_filsys fs EXT2FS_ATTR((unused)),
 142                                     struct ext2_inode *inode)
 143 {
 144         int     i;
 145
 146         /*
 147          * If the index or extents flag is set, then this is a bogus
 148          * device/fifo/socket
 149          */
 150         if (inode->i_flags & (EXT2_INDEX_FL | EXT4_EXTENTS_FL))
 151                 return 0;
 152
 153         /*
 154          * We should be able to do the test below all the time, but
 155          * because the kernel doesn't forcibly clear the device
 156          * inode's additional i_block fields, there are some rare
 157          * occasions when a legitimate device inode will have non-zero
 158          * additional i_block fields.  So for now, we only complain
 159          * when the immutable flag is set, which should never happen
 160          * for devices.  (And that's when the problem is caused, since
 161          * you can't set or clear immutable flags for devices.)  Once
 162          * the kernel has been fixed we can change this...
 163          */
 164         if (inode->i_flags & (EXT2_IMMUTABLE_FL | EXT2_APPEND_FL)) {
 165                 for (i=4; i < EXT2_N_BLOCKS; i++)
 166                         if (inode->i_block[i])
 167                                 return 0;
 168         }
 169         return 1;
 170 }
 171
 172 /*
 173  * Check to make sure a symlink inode is real.  Returns 1 if the symlink
 174  * checks out, 0 if not.
 175  */
 176 int e2fsck_pass1_check_symlink(ext2_filsys fs, ext2_ino_t ino,
 177                                struct ext2_inode *inode, char *buf)
 178 {
 179         unsigned int buflen;
 180         unsigned int len;
 181
 182         if ((inode->i_size_high || inode->i_size == 0) ||
 183             (inode->i_flags & EXT2_INDEX_FL))
 184                 return 0;
 185
 186         if (inode->i_flags & EXT4_INLINE_DATA_FL) {
 187                 size_t inline_size;
 188
 189                 if (inode->i_flags & EXT4_EXTENTS_FL)
 190                         return 0;
 191                 if (ext2fs_inline_data_size(fs, ino, &inline_size))
 192                         return 0;
 193                 if (inode->i_size != inline_size)
 194                         return 0;
 195
 196                 return 1;
 197         }
 198
 199         if (ext2fs_is_fast_symlink(inode)) {
 200                 if (inode->i_flags & EXT4_EXTENTS_FL)
 201                         return 0;
 202                 buf = (char *)inode->i_block;
 203                 buflen = sizeof(inode->i_block);
 204         } else {
 205                 ext2_extent_handle_t    handle;
 206                 struct ext2_extent_info info;
 207                 struct ext2fs_extent    extent;
 208                 blk64_t blk;
 209                 int i;
 210
 211                 if (inode->i_flags & EXT4_EXTENTS_FL) {
 212                         if (ext2fs_extent_open2(fs, ino, inode, &handle))
 213                                 return 0;
 214                         if (ext2fs_extent_get_info(handle, &info) ||
 215                             (info.num_entries != 1) ||
 216                             (info.max_depth != 0)) {
 217                                 ext2fs_extent_free(handle);
 218                                 return 0;
 219                         }
 220                         if (ext2fs_extent_get(handle, EXT2_EXTENT_ROOT,
 221                                               &extent) ||
 222                             (extent.e_lblk != 0) ||
 223                             (extent.e_len != 1)) {
 224                                 ext2fs_extent_free(handle);
 225                                 return 0;
 226                         }
 227                         blk = extent.e_pblk;
 228                         ext2fs_extent_free(handle);
 229                 } else {
 230                         blk = inode->i_block[0];
 231
 232                         for (i = 1; i < EXT2_N_BLOCKS; i++)
 233                                 if (inode->i_block[i])
 234                                         return 0;
 235                 }
 236
 237                 if (blk < fs->super->s_first_data_block ||
 238                     blk >= ext2fs_blocks_count(fs->super))
 239                         return 0;
 240
 241                 if (io_channel_read_blk64(fs->io, blk, 1, buf))
 242                         return 0;
 243
 244                 buflen = fs->blocksize;
 245         }
 246
 247         if (inode->i_flags & EXT4_ENCRYPT_FL)
 248                 len = ext2fs_le16_to_cpu(*(__u16 *)buf) + 2;
 249         else
 250                 len = strnlen(buf, buflen);
 251
 252         if (len >= buflen)
 253                 return 0;
 254
 255         if (len != inode->i_size)
 256                 return 0;
 257         return 1;
 258 }
 259
 260 /*
 261  * If the extents or inlinedata flags are set on the inode, offer to clear 'em.
 262  */
 263 #define BAD_SPECIAL_FLAGS (EXT4_EXTENTS_FL | EXT4_INLINE_DATA_FL)
 264 static void check_extents_inlinedata(e2fsck_t ctx,
 265                                      struct problem_context *pctx)
 266 {
 267         if (!(pctx->inode->i_flags & BAD_SPECIAL_FLAGS))
 268                 return;
 269
 270         if (!fix_problem(ctx, PR_1_SPECIAL_EXTENTS_IDATA, pctx))
 271                 return;
 272
 273         pctx->inode->i_flags &= ~BAD_SPECIAL_FLAGS;
 274         e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1");
 275 }
 276 #undef BAD_SPECIAL_FLAGS
 277
 278 /*
 279  * If the immutable (or append-only) flag is set on the inode, offer
 280  * to clear it.
 281  */
 282 #define BAD_SPECIAL_FLAGS (EXT2_IMMUTABLE_FL | EXT2_APPEND_FL)
 283 static void check_immutable(e2fsck_t ctx, struct problem_context *pctx)
 284 {
 285         if (!(pctx->inode->i_flags & BAD_SPECIAL_FLAGS))
 286                 return;
 287
 288         if (!fix_problem(ctx, PR_1_SET_IMMUTABLE, pctx))
 289                 return;
 290
 291         pctx->inode->i_flags &= ~BAD_SPECIAL_FLAGS;
 292         e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1");
 293 }
 294
 295 /*
 296  * If device, fifo or socket, check size is zero -- if not offer to
 297  * clear it
 298  */
 299 static void check_size(e2fsck_t ctx, struct problem_context *pctx)
 300 {
 301         struct ext2_inode *inode = pctx->inode;
 302
 303         if (EXT2_I_SIZE(inode) == 0)
 304                 return;
 305
 306         if (!fix_problem(ctx, PR_1_SET_NONZSIZE, pctx))
 307                 return;
 308
 309         ext2fs_inode_size_set(ctx->fs, inode, 0);
 310         e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1");
 311 }
 312
 313 /*
 314  * For a given size, calculate how many blocks would be charged towards quota.
 315  */
 316 static blk64_t size_to_quota_blocks(ext2_filsys fs, size_t size)
 317 {
 318         blk64_t clusters;
 319
 320         clusters = DIV_ROUND_UP(size, fs->blocksize << fs->cluster_ratio_bits);
 321         return EXT2FS_C2B(fs, clusters);
 322 }
 323
 324 /*
 325  * Check validity of EA inode. Return 0 if EA inode is valid, otherwise return
 326  * the problem code.
 327  */
 328 static problem_t check_large_ea_inode(e2fsck_t ctx,
 329                                       struct ext2_ext_attr_entry *entry,
 330                                       struct problem_context *pctx,
 331                                       blk64_t *quota_blocks)
 332 {
 333         struct ext2_inode inode;
 334         __u32 hash;
 335         errcode_t retval;
 336
 337         /* Check if inode is within valid range */
 338         if ((entry->e_value_inum < EXT2_FIRST_INODE(ctx->fs->super)) ||
 339             (entry->e_value_inum > ctx->fs->super->s_inodes_count)) {
 340                 pctx->num = entry->e_value_inum;
 341                 return PR_1_ATTR_VALUE_EA_INODE;
 342         }
 343
 344         e2fsck_read_inode(ctx, entry->e_value_inum, &inode, "pass1");
 345
 346         retval = ext2fs_ext_attr_hash_entry2(ctx->fs, entry, NULL, &hash);
 347         if (retval) {
 348                 com_err("check_large_ea_inode", retval,
 349                         _("while hashing entry with e_value_inum = %u"),
 350                         entry->e_value_inum);
 351                 fatal_error(ctx, 0);
 352         }
 353
 354         if (hash == entry->e_hash) {
 355                 *quota_blocks = size_to_quota_blocks(ctx->fs,
 356                                                      entry->e_value_size);
 357         } else {
 358                 /* This might be an old Lustre-style ea_inode reference. */
 359                 if (inode.i_mtime == pctx->ino &&
 360                     inode.i_generation == pctx->inode->i_generation) {
 361                         *quota_blocks = 0;
 362                 } else {
 363                         /* If target inode is also missing EA_INODE flag,
 364                          * this is likely to be a bad reference.
 365                          */
 366                         if (!(inode.i_flags & EXT4_EA_INODE_FL)) {
 367                                 pctx->num = entry->e_value_inum;
 368                                 return PR_1_ATTR_VALUE_EA_INODE;
 369                         } else {
 370                                 pctx->num = entry->e_hash;
 371                                 return PR_1_ATTR_HASH;
 372                         }
 373                 }
 374         }
 375
 376         if (!(inode.i_flags & EXT4_EA_INODE_FL)) {
 377                 pctx->num = entry->e_value_inum;
 378                 if (fix_problem(ctx, PR_1_ATTR_SET_EA_INODE_FL, pctx)) {
 379                         inode.i_flags |= EXT4_EA_INODE_FL;
 380                         ext2fs_write_inode(ctx->fs, entry->e_value_inum,
 381                                            &inode);
 382                 } else {
 383                         return PR_1_ATTR_NO_EA_INODE_FL;
 384                 }
 385         }
 386         return 0;
 387 }
 388
 389 static void inc_ea_inode_refs(e2fsck_t ctx, struct problem_context *pctx,
 390                               struct ext2_ext_attr_entry *first, void *end)
 391 {
 392         struct ext2_ext_attr_entry *entry;
 393
 394         for (entry = first;
 395              (void *)entry < end && !EXT2_EXT_IS_LAST_ENTRY(entry);
 396              entry = EXT2_EXT_ATTR_NEXT(entry)) {
 397                 if (!entry->e_value_inum)
 398                         continue;
 399                 if (!ctx->ea_inode_refs) {
 400                         pctx->errcode = ea_refcount_create(0,
 401                                                            &ctx->ea_inode_refs);
 402                         if (pctx->errcode) {
 403                                 pctx->num = 4;
 404                                 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
 405                                 ctx->flags |= E2F_FLAG_ABORT;
 406                                 return;
 407                         }
 408                 }
 409                 ea_refcount_increment(ctx->ea_inode_refs, entry->e_value_inum,
 410                                       0);
 411         }
 412 }
 413
 414 static void check_ea_in_inode(e2fsck_t ctx, struct problem_context *pctx,
 415                               struct ea_quota *ea_ibody_quota)
 416 {
 417         struct ext2_super_block *sb = ctx->fs->super;
 418         struct ext2_inode_large *inode;
 419         struct ext2_ext_attr_entry *entry;
 420         char *start, *header, *end;
 421         unsigned int storage_size, remain;
 422         problem_t problem = 0;
 423         region_t region = 0;
 424
 425         ea_ibody_quota->blocks = 0;
 426         ea_ibody_quota->inodes = 0;
 427
 428         inode = (struct ext2_inode_large *) pctx->inode;
 429         storage_size = EXT2_INODE_SIZE(ctx->fs->super) - EXT2_GOOD_OLD_INODE_SIZE -
 430                 inode->i_extra_isize;
 431         header = ((char *) inode) + EXT2_GOOD_OLD_INODE_SIZE +
 432                  inode->i_extra_isize;
 433         end = header + storage_size;
 434         start = header + sizeof(__u32);
 435         entry = (struct ext2_ext_attr_entry *) start;
 436
 437         /* scan all entry's headers first */
 438
 439         /* take finish entry 0UL into account */
 440         remain = storage_size - sizeof(__u32);
 441
 442         region = region_create(0, storage_size);
 443         if (!region) {
 444                 fix_problem(ctx, PR_1_EA_ALLOC_REGION_ABORT, pctx);
 445                 problem = 0;
 446                 ctx->flags |= E2F_FLAG_ABORT;
 447                 return;
 448         }
 449         if (region_allocate(region, 0, sizeof(__u32))) {
 450                 problem = PR_1_INODE_EA_ALLOC_COLLISION;
 451                 goto fix;
 452         }
 453
 454         while (remain >= sizeof(struct ext2_ext_attr_entry) &&
 455                !EXT2_EXT_IS_LAST_ENTRY(entry)) {
 456                 __u32 hash;
 457
 458                 if (region_allocate(region, (char *)entry - (char *)header,
 459                                     EXT2_EXT_ATTR_LEN(entry->e_name_len))) {
 460                         problem = PR_1_INODE_EA_ALLOC_COLLISION;
 461                         goto fix;
 462                 }
 463
 464                 /* header eats this space */
 465                 remain -= sizeof(struct ext2_ext_attr_entry);
 466
 467                 /* is attribute name valid? */
 468                 if (EXT2_EXT_ATTR_SIZE(entry->e_name_len) > remain) {
 469                         pctx->num = entry->e_name_len;
 470                         problem = PR_1_ATTR_NAME_LEN;
 471                         goto fix;
 472                 }
 473
 474                 /* attribute len eats this space */
 475                 remain -= EXT2_EXT_ATTR_SIZE(entry->e_name_len);
 476
 477                 if (entry->e_value_inum == 0) {
 478                         /* check value size */
 479                         if (entry->e_value_size > remain) {
 480                                 pctx->num = entry->e_value_size;
 481                                 problem = PR_1_ATTR_VALUE_SIZE;
 482                                 goto fix;
 483                         }
 484
 485                         if (entry->e_value_size &&
 486                             region_allocate(region,
 487                                             sizeof(__u32) + entry->e_value_offs,
 488                                             EXT2_EXT_ATTR_SIZE(
 489                                                 entry->e_value_size))) {
 490                                 problem = PR_1_INODE_EA_ALLOC_COLLISION;
 491                                 goto fix;
 492                         }
 493
 494                         hash = ext2fs_ext_attr_hash_entry(entry,
 495                                                           start + entry->e_value_offs);
 496
 497                         /* e_hash may be 0 in older inode's ea */
 498                         if (entry->e_hash != 0 && entry->e_hash != hash) {
 499                                 pctx->num = entry->e_hash;
 500                                 problem = PR_1_ATTR_HASH;
 501                                 goto fix;
 502                         }
 503                 } else {
 504                         blk64_t quota_blocks;
 505
 506                         problem = check_large_ea_inode(ctx, entry, pctx,
 507                                                        &quota_blocks);
 508                         if (problem != 0)
 509                                 goto fix;
 510
 511                         ea_ibody_quota->blocks += quota_blocks;
 512                         ea_ibody_quota->inodes++;
 513                 }
 514
 515                 /* If EA value is stored in external inode then it does not
 516                  * consume space here */
 517                 if (entry->e_value_inum == 0)
 518                         remain -= entry->e_value_size;
 519
 520                 entry = EXT2_EXT_ATTR_NEXT(entry);
 521         }
 522
 523         if (region_allocate(region, (char *)entry - (char *)header,
 524                             sizeof(__u32))) {
 525                 problem = PR_1_INODE_EA_ALLOC_COLLISION;
 526                 goto fix;
 527         }
 528 fix:
 529         if (region)
 530                 region_free(region);
 531         /*
 532          * it seems like a corruption. it's very unlikely we could repair
 533          * EA(s) in automatic fashion -bzzz
 534          */
 535         if (problem == 0 || !fix_problem(ctx, problem, pctx)) {
 536                 inc_ea_inode_refs(ctx, pctx,
 537                                   (struct ext2_ext_attr_entry *)start, end);
 538                 return;
 539         }
 540
 541         /* simply remove all possible EA(s) */
 542         *((__u32 *)header) = 0UL;
 543         e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
 544                                 EXT2_INODE_SIZE(sb), "pass1");
 545         ea_ibody_quota->blocks = 0;
 546         ea_ibody_quota->inodes = 0;
 547 }
 548
 549 static int check_inode_extra_negative_epoch(__u32 xtime, __u32 extra) {
 550         return (xtime & (1U << 31)) != 0 &&
 551                 (extra & EXT4_EPOCH_MASK) == EXT4_EPOCH_MASK;
 552 }
 553
 554 #define CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, xtime) \
 555         check_inode_extra_negative_epoch(inode->i_##xtime, \
 556                                          inode->i_##xtime##_extra)
 557
 558 /* When today's date is earlier than 2242, we assume that atimes,
 559  * ctimes, crtimes, and mtimes with years in the range 2310..2378 are
 560  * actually pre-1970 dates mis-encoded.
 561  */
 562 #define EXT4_EXTRA_NEGATIVE_DATE_CUTOFF 2 * (1LL << 32)
 563
 564 static void check_inode_extra_space(e2fsck_t ctx, struct problem_context *pctx,
 565                                     struct ea_quota *ea_ibody_quota)
 566 {
 567         struct ext2_super_block *sb = ctx->fs->super;
 568         struct ext2_inode_large *inode;
 569         __u32 *eamagic;
 570         int min, max;
 571
 572         ea_ibody_quota->blocks = 0;
 573         ea_ibody_quota->inodes = 0;
 574
 575         inode = (struct ext2_inode_large *) pctx->inode;
 576         if (EXT2_INODE_SIZE(sb) == EXT2_GOOD_OLD_INODE_SIZE) {
 577                 /* this isn't large inode. so, nothing to check */
 578                 return;
 579         }
 580
 581 #if 0
 582         printf("inode #%u, i_extra_size %d\n", pctx->ino,
 583                         inode->i_extra_isize);
 584 #endif
 585         /* i_extra_isize must cover i_extra_isize + i_checksum_hi at least */
 586         min = sizeof(inode->i_extra_isize) + sizeof(inode->i_checksum_hi);
 587         max = EXT2_INODE_SIZE(sb) - EXT2_GOOD_OLD_INODE_SIZE;
 588         /*
 589          * For now we will allow i_extra_isize to be 0, but really
 590          * implementations should never allow i_extra_isize to be 0
 591          */
 592         if (inode->i_extra_isize &&
 593             (inode->i_extra_isize < min || inode->i_extra_isize > max ||
 594              inode->i_extra_isize & 3)) {
 595                 if (!fix_problem(ctx, PR_1_EXTRA_ISIZE, pctx))
 596                         return;
 597                 if (inode->i_extra_isize < min || inode->i_extra_isize > max)
 598                         inode->i_extra_isize = sb->s_want_extra_isize;
 599                 else
 600                         inode->i_extra_isize = (inode->i_extra_isize + 3) & ~3;
 601                 e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
 602                                         EXT2_INODE_SIZE(sb), "pass1");
 603         }
 604
 605         /* check if there is no place for an EA header */
 606         if (inode->i_extra_isize >= max - sizeof(__u32))
 607                 return;
 608
 609         eamagic = (__u32 *) (((char *) inode) + EXT2_GOOD_OLD_INODE_SIZE +
 610                         inode->i_extra_isize);
 611         if (*eamagic == EXT2_EXT_ATTR_MAGIC) {
 612                 /* it seems inode has an extended attribute(s) in body */
 613                 check_ea_in_inode(ctx, pctx, ea_ibody_quota);
 614         }
 615
 616         /*
 617          * If the inode's extended atime (ctime, crtime, mtime) is stored in
 618          * the old, invalid format, repair it.
 619          */
 620         if (((sizeof(time_t) <= 4) ||
 621              (((sizeof(time_t) > 4) &&
 622                ctx->now < EXT4_EXTRA_NEGATIVE_DATE_CUTOFF))) &&
 623             (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, atime) ||
 624              CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, ctime) ||
 625              CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, crtime) ||
 626              CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, mtime))) {
 627
 628                 if (!fix_problem(ctx, PR_1_EA_TIME_OUT_OF_RANGE, pctx))
 629                         return;
 630
 631                 if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, atime))
 632                         inode->i_atime_extra &= ~EXT4_EPOCH_MASK;
 633                 if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, ctime))
 634                         inode->i_ctime_extra &= ~EXT4_EPOCH_MASK;
 635                 if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, crtime))
 636                         inode->i_crtime_extra &= ~EXT4_EPOCH_MASK;
 637                 if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, mtime))
 638                         inode->i_mtime_extra &= ~EXT4_EPOCH_MASK;
 639                 e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
 640                                         EXT2_INODE_SIZE(sb), "pass1");
 641         }
 642
 643 }
 644
 645 /*
 646  * Check to see if the inode might really be a directory, despite i_mode
 647  *
 648  * This is a lot of complexity for something for which I'm not really
 649  * convinced happens frequently in the wild.  If for any reason this
 650  * causes any problems, take this code out.
 651  * [tytso:20070331.0827EDT]
 652  */
 653 static void check_is_really_dir(e2fsck_t ctx, struct problem_context *pctx,
 654                                 char *buf)
 655 {
 656         struct ext2_inode *inode = pctx->inode;
 657         struct ext2_dir_entry   *dirent;
 658         errcode_t               retval;
 659         blk64_t                 blk;
 660         unsigned int            i, rec_len, not_device = 0;
 661         int                     extent_fs;
 662         int                     inlinedata_fs;
 663
 664         /*
 665          * If the mode looks OK, we believe it.  If the first block in
 666          * the i_block array is 0, this cannot be a directory. If the
 667          * inode is extent-mapped, it is still the case that the latter
 668          * cannot be 0 - the magic number in the extent header would make
 669          * it nonzero.
 670          */
 671         if (LINUX_S_ISDIR(inode->i_mode) || LINUX_S_ISREG(inode->i_mode) ||
 672             LINUX_S_ISLNK(inode->i_mode) || inode->i_block[0] == 0)
 673                 return;
 674
 675         /*
 676          * Check the block numbers in the i_block array for validity:
 677          * zero blocks are skipped (but the first one cannot be zero -
 678          * see above), other blocks are checked against the first and
 679          * max data blocks (from the the superblock) and against the
 680          * block bitmap. Any invalid block found means this cannot be
 681          * a directory.
 682          *
 683          * If there are non-zero blocks past the fourth entry, then
 684          * this cannot be a device file: we remember that for the next
 685          * check.
 686          *
 687          * For extent mapped files, we don't do any sanity checking:
 688          * just try to get the phys block of logical block 0 and run
 689          * with it.
 690          *
 691          * For inline data files, we just try to get the size of inline
 692          * data.  If it's true, we will treat it as a directory.
 693          */
 694
 695         extent_fs = ext2fs_has_feature_extents(ctx->fs->super);
 696         inlinedata_fs = ext2fs_has_feature_inline_data(ctx->fs->super);
 697         if (inlinedata_fs && (inode->i_flags & EXT4_INLINE_DATA_FL)) {
 698                 size_t size;
 699                 __u32 dotdot;
 700                 unsigned int rec_len2;
 701                 struct ext2_dir_entry de;
 702
 703                 if (ext2fs_inline_data_size(ctx->fs, pctx->ino, &size))
 704                         return;
 705                 /*
 706                  * If the size isn't a multiple of 4, it's probably not a
 707                  * directory??
 708                  */
 709                 if (size & 3)
 710                         return;
 711                 /*
 712                  * If the first 10 bytes don't look like a directory entry,
 713                  * it's probably not a directory.
 714                  */
 715                 memcpy(&dotdot, inode->i_block, sizeof(dotdot));
 716                 memcpy(&de, ((char *)inode->i_block) + EXT4_INLINE_DATA_DOTDOT_SIZE,
 717                        EXT2_DIR_REC_LEN(0));
 718                 dotdot = ext2fs_le32_to_cpu(dotdot);
 719                 de.inode = ext2fs_le32_to_cpu(de.inode);
 720                 de.rec_len = ext2fs_le16_to_cpu(de.rec_len);
 721                 ext2fs_get_rec_len(ctx->fs, &de, &rec_len2);
 722                 if (dotdot >= ctx->fs->super->s_inodes_count ||
 723                     (dotdot < EXT2_FIRST_INO(ctx->fs->super) &&
 724                      dotdot != EXT2_ROOT_INO) ||
 725                     de.inode >= ctx->fs->super->s_inodes_count ||
 726                     (de.inode < EXT2_FIRST_INO(ctx->fs->super) &&
 727                      de.inode != 0) ||
 728                     rec_len2 > EXT4_MIN_INLINE_DATA_SIZE -
 729                               EXT4_INLINE_DATA_DOTDOT_SIZE)
 730                         return;
 731                 /* device files never have a "system.data" entry */
 732                 goto isdir;
 733         } else if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) {
 734                 /* extent mapped */
 735                 if  (ext2fs_bmap2(ctx->fs, pctx->ino, inode, 0, 0, 0, 0,
 736                                  &blk))
 737                         return;
 738                 /* device files are never extent mapped */
 739                 not_device++;
 740         } else {
 741                 for (i=0; i < EXT2_N_BLOCKS; i++) {
 742                         blk = inode->i_block[i];
 743                         if (!blk)
 744                                 continue;
 745                         if (i >= 4)
 746                                 not_device++;
 747
 748                         if (blk < ctx->fs->super->s_first_data_block ||
 749                             blk >= ext2fs_blocks_count(ctx->fs->super) ||
 750                             ext2fs_fast_test_block_bitmap2(ctx->block_found_map,
 751                                                            blk))
 752                                 return; /* Invalid block, can't be dir */
 753                 }
 754                 blk = inode->i_block[0];
 755         }
 756
 757         /*
 758          * If the mode says this is a device file and the i_links_count field
 759          * is sane and we have not ruled it out as a device file previously,
 760          * we declare it a device file, not a directory.
 761          */
 762         if ((LINUX_S_ISCHR(inode->i_mode) || LINUX_S_ISBLK(inode->i_mode)) &&
 763             (inode->i_links_count == 1) && !not_device)
 764                 return;
 765
 766         /* read the first block */
 767         ehandler_operation(_("reading directory block"));
 768         retval = ext2fs_read_dir_block4(ctx->fs, blk, buf, 0, pctx->ino);
 769         ehandler_operation(0);
 770         if (retval)
 771                 return;
 772
 773         dirent = (struct ext2_dir_entry *) buf;
 774         retval = ext2fs_get_rec_len(ctx->fs, dirent, &rec_len);
 775         if (retval)
 776                 return;
 777         if ((ext2fs_dirent_name_len(dirent) != 1) ||
 778             (dirent->name[0] != '.') ||
 779             (dirent->inode != pctx->ino) ||
 780             (rec_len < 12) ||
 781             (rec_len % 4) ||
 782             (rec_len >= ctx->fs->blocksize - 12))
 783                 return;
 784
 785         dirent = (struct ext2_dir_entry *) (buf + rec_len);
 786         retval = ext2fs_get_rec_len(ctx->fs, dirent, &rec_len);
 787         if (retval)
 788                 return;
 789         if ((ext2fs_dirent_name_len(dirent) != 2) ||
 790             (dirent->name[0] != '.') ||
 791             (dirent->name[1] != '.') ||
 792             (rec_len < 12) ||
 793             (rec_len % 4))
 794                 return;
 795
 796 isdir:
 797         if (fix_problem(ctx, PR_1_TREAT_AS_DIRECTORY, pctx)) {
 798                 inode->i_mode = (inode->i_mode & 07777) | LINUX_S_IFDIR;
 799                 e2fsck_write_inode_full(ctx, pctx->ino, inode,
 800                                         EXT2_INODE_SIZE(ctx->fs->super),
 801                                         "check_is_really_dir");
 802         }
 803 }
 804
 805 extern errcode_t e2fsck_setup_icount(e2fsck_t ctx, const char *icount_name,
 806                                      int flags, ext2_icount_t hint,
 807                                      ext2_icount_t *ret)
 808 {
 809         unsigned int            threshold;
 810         unsigned int            save_type;
 811         ext2_ino_t              num_dirs;
 812         errcode_t               retval;
 813         char                    *tdb_dir;
 814         int                     enable;
 815
 816         *ret = 0;
 817
 818         profile_get_string(ctx->profile, "scratch_files", "directory", 0, 0,
 819                            &tdb_dir);
 820         profile_get_uint(ctx->profile, "scratch_files",
 821                          "numdirs_threshold", 0, 0, &threshold);
 822         profile_get_boolean(ctx->profile, "scratch_files",
 823                             "icount", 0, 1, &enable);
 824
 825         retval = ext2fs_get_num_dirs(ctx->fs, &num_dirs);
 826         if (retval)
 827                 num_dirs = 1024;        /* Guess */
 828
 829         if (enable && tdb_dir && !access(tdb_dir, W_OK) &&
 830             (!threshold || num_dirs > threshold)) {
 831                 retval = ext2fs_create_icount_tdb(ctx->fs, tdb_dir,
 832                                                   flags, ret);
 833                 if (retval == 0)
 834                         return 0;
 835         }
 836         e2fsck_set_bitmap_type(ctx->fs, EXT2FS_BMAP64_RBTREE, icount_name,
 837                                &save_type);
 838         if (ctx->options & E2F_OPT_ICOUNT_FULLMAP)
 839                 flags |= EXT2_ICOUNT_OPT_FULLMAP;
 840         retval = ext2fs_create_icount2(ctx->fs, flags, 0, hint, ret);
 841         ctx->fs->default_bitmap_type = save_type;
 842         return retval;
 843 }
 844
 845 static errcode_t recheck_bad_inode_checksum(ext2_filsys fs, ext2_ino_t ino,
 846                                             e2fsck_t ctx,
 847                                             struct problem_context *pctx)
 848 {
 849         errcode_t retval;
 850         struct ext2_inode_large inode;
 851
 852         /*
 853          * Reread inode.  If we don't see checksum error, then this inode
 854          * has been fixed elsewhere.
 855          */
 856         ctx->stashed_ino = 0;
 857         retval = ext2fs_read_inode_full(fs, ino, (struct ext2_inode *)&inode,
 858                                         sizeof(inode));
 859         if (retval && retval != EXT2_ET_INODE_CSUM_INVALID)
 860                 return retval;
 861         if (!retval)
 862                 return 0;
 863
 864         /*
 865          * Checksum still doesn't match.  That implies that the inode passes
 866          * all the sanity checks, so maybe the checksum is simply corrupt.
 867          * See if the user will go for fixing that.
 868          */
 869         if (!fix_problem(ctx, PR_1_INODE_ONLY_CSUM_INVALID, pctx))
 870                 return 0;
 871
 872         retval = ext2fs_write_inode_full(fs, ino, (struct ext2_inode *)&inode,
 873                                          sizeof(inode));
 874         return retval;
 875 }
 876
 877 static void reserve_block_for_root_repair(e2fsck_t ctx)
 878 {
 879         blk64_t         blk = 0;
 880         errcode_t       err;
 881         ext2_filsys     fs = ctx->fs;
 882
 883         ctx->root_repair_block = 0;
 884         if (ext2fs_test_inode_bitmap2(ctx->inode_used_map, EXT2_ROOT_INO))
 885                 return;
 886
 887         err = ext2fs_new_block2(fs, 0, ctx->block_found_map, &blk);
 888         if (err)
 889                 return;
 890         ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
 891         ctx->root_repair_block = blk;
 892 }
 893
 894 static void reserve_block_for_lnf_repair(e2fsck_t ctx)
 895 {
 896         blk64_t         blk = 0;
 897         errcode_t       err;
 898         ext2_filsys     fs = ctx->fs;
 899         static const char name[] = "lost+found";
 900         ext2_ino_t      ino;
 901
 902         ctx->lnf_repair_block = 0;
 903         if (!ext2fs_lookup(fs, EXT2_ROOT_INO, name, sizeof(name)-1, 0, &ino))
 904                 return;
 905
 906         err = ext2fs_new_block2(fs, 0, ctx->block_found_map, &blk);
 907         if (err)
 908                 return;
 909         ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
 910         ctx->lnf_repair_block = blk;
 911 }
 912
 913 static errcode_t get_inline_data_ea_size(ext2_filsys fs, ext2_ino_t ino,
 914                                          size_t *sz)
 915 {
 916         void *p;
 917         struct ext2_xattr_handle *handle;
 918         errcode_t retval;
 919
 920         retval = ext2fs_xattrs_open(fs, ino, &handle);
 921         if (retval)
 922                 return retval;
 923
 924         retval = ext2fs_xattrs_read(handle);
 925         if (retval)
 926                 goto err;
 927
 928         retval = ext2fs_xattr_get(handle, "system.data", &p, sz);
 929         if (retval)
 930                 goto err;
 931         ext2fs_free_mem(&p);
 932 err:
 933         (void) ext2fs_xattrs_close(&handle);
 934         return retval;
 935 }
 936
 937 static void finish_processing_inode(e2fsck_t ctx, ext2_ino_t ino,
 938                                     struct problem_context *pctx,
 939                                     int failed_csum)
 940 {
 941         if (!failed_csum)
 942                 return;
 943
 944         /*
 945          * If the inode failed the checksum and the user didn't
 946          * clear the inode, test the checksum again -- if it still
 947          * fails, ask the user if the checksum should be corrected.
 948          */
 949         pctx->errcode = recheck_bad_inode_checksum(ctx->fs, ino, ctx, pctx);
 950         if (pctx->errcode)
 951                 ctx->flags |= E2F_FLAG_ABORT;
 952 }
 953 #define FINISH_INODE_LOOP(ctx, ino, pctx, failed_csum) \
 954         do { \
 955                 finish_processing_inode((ctx), (ino), (pctx), (failed_csum)); \
 956                 if ((ctx)->flags & E2F_FLAG_ABORT) \
 957                         return; \
 958         } while (0)
 959
 960 static int could_be_block_map(ext2_filsys fs, struct ext2_inode *inode)
 961 {
 962         __u32 x;
 963         int i;
 964
 965         for (i = 0; i < EXT2_N_BLOCKS; i++) {
 966                 x = inode->i_block[i];
 967 #ifdef WORDS_BIGENDIAN
 968                 x = ext2fs_swab32(x);
 969 #endif
 970                 if (x >= ext2fs_blocks_count(fs->super))
 971                         return 0;
 972         }
 973
 974         return 1;
 975 }
 976
 977 /*
 978  * Figure out what to do with an inode that has both extents and inline data
 979  * inode flags set.  Returns -1 if we decide to erase the inode, 0 otherwise.
 980  */
 981 static int fix_inline_data_extents_file(e2fsck_t ctx,
 982                                         ext2_ino_t ino,
 983                                         struct ext2_inode *inode,
 984                                         int inode_size,
 985                                         struct problem_context *pctx)
 986 {
 987         size_t max_inline_ea_size;
 988         ext2_filsys fs = ctx->fs;
 989         int dirty = 0;
 990
 991         /* Both feature flags not set?  Just run the regular checks */
 992         if (!ext2fs_has_feature_extents(fs->super) &&
 993             !ext2fs_has_feature_inline_data(fs->super))
 994                 return 0;
 995
 996         /* Clear both flags if it's a special file */
 997         if (LINUX_S_ISCHR(inode->i_mode) ||
 998             LINUX_S_ISBLK(inode->i_mode) ||
 999             LINUX_S_ISFIFO(inode->i_mode) ||
1000             LINUX_S_ISSOCK(inode->i_mode)) {
1001                 check_extents_inlinedata(ctx, pctx);
1002                 return 0;
1003         }
1004
1005         /* If it looks like an extent tree, try to clear inlinedata */
1006         if (ext2fs_extent_header_verify(inode->i_block,
1007                                  sizeof(inode->i_block)) == 0 &&
1008             fix_problem(ctx, PR_1_CLEAR_INLINE_DATA_FOR_EXTENT, pctx)) {
1009                 inode->i_flags &= ~EXT4_INLINE_DATA_FL;
1010                 dirty = 1;
1011                 goto out;
1012         }
1013
1014         /* If it looks short enough to be inline data, try to clear extents */
1015         if (inode_size > EXT2_GOOD_OLD_INODE_SIZE)
1016                 max_inline_ea_size = inode_size -
1017                                      (EXT2_GOOD_OLD_INODE_SIZE +
1018                                       ((struct ext2_inode_large *)inode)->i_extra_isize);
1019         else
1020                 max_inline_ea_size = 0;
1021         if (EXT2_I_SIZE(inode) <
1022             EXT4_MIN_INLINE_DATA_SIZE + max_inline_ea_size &&
1023             fix_problem(ctx, PR_1_CLEAR_EXTENT_FOR_INLINE_DATA, pctx)) {
1024                 inode->i_flags &= ~EXT4_EXTENTS_FL;
1025                 dirty = 1;
1026                 goto out;
1027         }
1028
1029         /*
1030          * Too big for inline data, but no evidence of extent tree -
1031          * maybe it's a block map file?  If the mappings all look valid?
1032          */
1033         if (could_be_block_map(fs, inode) &&
1034             fix_problem(ctx, PR_1_CLEAR_EXTENT_INLINE_DATA_FLAGS, pctx)) {
1035 #ifdef WORDS_BIGENDIAN
1036                 int i;
1037
1038                 for (i = 0; i < EXT2_N_BLOCKS; i++)
1039                         inode->i_block[i] = ext2fs_swab32(inode->i_block[i]);
1040 #endif
1041
1042                 inode->i_flags &= ~(EXT4_EXTENTS_FL | EXT4_INLINE_DATA_FL);
1043                 dirty = 1;
1044                 goto out;
1045         }
1046
1047         /* Oh well, just clear the busted inode. */
1048         if (fix_problem(ctx, PR_1_CLEAR_EXTENT_INLINE_DATA_INODE, pctx)) {
1049                 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1050                 return -1;
1051         }
1052
1053 out:
1054         if (dirty)
1055                 e2fsck_write_inode(ctx, ino, inode, "pass1");
1056
1057         return 0;
1058 }
1059
1060 static void pass1_readahead(e2fsck_t ctx, dgrp_t *group, ext2_ino_t *next_ino)
1061 {
1062         ext2_ino_t inodes_in_group = 0, inodes_per_block, inodes_per_buffer;
1063         dgrp_t start = *group, grp;
1064         blk64_t blocks_to_read = 0;
1065         errcode_t err = EXT2_ET_INVALID_ARGUMENT;
1066
1067         if (ctx->readahead_kb == 0)
1068                 goto out;
1069
1070         /* Keep iterating groups until we have enough to readahead */
1071         inodes_per_block = EXT2_INODES_PER_BLOCK(ctx->fs->super);
1072         for (grp = start; grp < ctx->fs->group_desc_count; grp++) {
1073                 if (ext2fs_bg_flags_test(ctx->fs, grp, EXT2_BG_INODE_UNINIT))
1074                         continue;
1075                 inodes_in_group = ctx->fs->super->s_inodes_per_group -
1076                                         ext2fs_bg_itable_unused(ctx->fs, grp);
1077                 blocks_to_read += (inodes_in_group + inodes_per_block - 1) /
1078                                         inodes_per_block;
1079                 if (blocks_to_read * ctx->fs->blocksize >
1080                     ctx->readahead_kb * 1024)
1081                         break;
1082         }
1083
1084         err = e2fsck_readahead(ctx->fs, E2FSCK_READA_ITABLE, start,
1085                                grp - start + 1);
1086         if (err == EAGAIN) {
1087                 ctx->readahead_kb /= 2;
1088                 err = 0;
1089         }
1090
1091 out:
1092         if (err) {
1093                 /* Error; disable itable readahead */
1094                 *group = ctx->fs->group_desc_count;
1095                 *next_ino = ctx->fs->super->s_inodes_count;
1096         } else {
1097                 /*
1098                  * Don't do more readahead until we've reached the first inode
1099                  * of the last inode scan buffer block for the last group.
1100                  */
1101                 *group = grp + 1;
1102                 inodes_per_buffer = (ctx->inode_buffer_blocks ?
1103                                      ctx->inode_buffer_blocks :
1104                                      EXT2_INODE_SCAN_DEFAULT_BUFFER_BLOCKS) *
1105                                     ctx->fs->blocksize /
1106                                     EXT2_INODE_SIZE(ctx->fs->super);
1107                 inodes_in_group--;
1108                 *next_ino = inodes_in_group -
1109                             (inodes_in_group % inodes_per_buffer) + 1 +
1110                             (grp * ctx->fs->super->s_inodes_per_group);
1111         }
1112 }
1113
1114 /*
1115  * Check if the passed ino is one of the used superblock quota inodes.
1116  *
1117  * Before the quota inodes were journaled, older superblock quota inodes
1118  * were just regular files in the filesystem and not reserved inodes.  This
1119  * checks if the passed ino is one of the s_*_quota_inum superblock fields,
1120  * which may not always be the same as the EXT4_*_QUOTA_INO fields.
1121  */
1122 static int quota_inum_is_super(struct ext2_super_block *sb, ext2_ino_t ino)
1123 {
1124         enum quota_type qtype;
1125
1126         for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1127                 if (*quota_sb_inump(sb, qtype) == ino)
1128                         return 1;
1129
1130         return 0;
1131 }
1132
1133 /*
1134  * Check if the passed ino is one of the reserved quota inodes.
1135  * This checks if the inode number is one of the reserved EXT4_*_QUOTA_INO
1136  * inodes.  These inodes may or may not be in use by the quota feature.
1137  */
1138 static int quota_inum_is_reserved(ext2_filsys fs, ext2_ino_t ino)
1139 {
1140         enum quota_type qtype;
1141
1142         for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1143                 if (quota_type2inum(qtype, fs->super) == ino)
1144                         return 1;
1145
1146         return 0;
1147 }
1148
1149 void e2fsck_pass1(e2fsck_t ctx)
1150 {
1151         int     i;
1152         __u64   max_sizes;
1153         ext2_filsys fs = ctx->fs;
1154         ext2_ino_t      ino = 0;
1155         struct ext2_inode *inode = NULL;
1156         ext2_inode_scan scan = NULL;
1157         char            *block_buf = NULL;
1158 #ifdef RESOURCE_TRACK
1159         struct resource_track   rtrack;
1160 #endif
1161         unsigned char   frag, fsize;
1162         struct          problem_context pctx;
1163         struct          scan_callback_struct scan_struct;
1164         struct ext2_super_block *sb = ctx->fs->super;
1165         const char      *old_op;
1166         const char      *eop_next_inode = _("getting next inode from scan");
1167         int             imagic_fs, extent_fs, inlinedata_fs, casefold_fs;
1168         int             low_dtime_check = 1;
1169         unsigned int    inode_size = EXT2_INODE_SIZE(fs->super);
1170         unsigned int    bufsize;
1171         int             failed_csum = 0;
1172         ext2_ino_t      ino_threshold = 0;
1173         dgrp_t          ra_group = 0;
1174         struct ea_quota ea_ibody_quota;
1175
1176         init_resource_track(&rtrack, ctx->fs->io);
1177         clear_problem_context(&pctx);
1178
1179         /* If we can do readahead, figure out how many groups to pull in. */
1180         if (!e2fsck_can_readahead(ctx->fs))
1181                 ctx->readahead_kb = 0;
1182         else if (ctx->readahead_kb == ~0ULL)
1183                 ctx->readahead_kb = e2fsck_guess_readahead(ctx->fs);
1184         pass1_readahead(ctx, &ra_group, &ino_threshold);
1185
1186         if (!(ctx->options & E2F_OPT_PREEN))
1187                 fix_problem(ctx, PR_1_PASS_HEADER, &pctx);
1188
1189         if (ext2fs_has_feature_dir_index(fs->super) &&
1190             !(ctx->options & E2F_OPT_NO)) {
1191                 if (ext2fs_u32_list_create(&ctx->dirs_to_hash, 50))
1192                         ctx->dirs_to_hash = 0;
1193         }
1194
1195 #ifdef MTRACE
1196         mtrace_print("Pass 1");
1197 #endif
1198
1199 #define EXT2_BPP(bits) (1ULL << ((bits) - 2))
1200
1201         for (i = EXT2_MIN_BLOCK_LOG_SIZE; i <= EXT2_MAX_BLOCK_LOG_SIZE; i++) {
1202                 max_sizes = EXT2_NDIR_BLOCKS + EXT2_BPP(i);
1203                 max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i);
1204                 max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i) * EXT2_BPP(i);
1205                 max_sizes = (max_sizes * (1UL << i));
1206                 ext2_max_sizes[i - EXT2_MIN_BLOCK_LOG_SIZE] = max_sizes;
1207         }
1208 #undef EXT2_BPP
1209
1210         imagic_fs = ext2fs_has_feature_imagic_inodes(sb);
1211         extent_fs = ext2fs_has_feature_extents(sb);
1212         inlinedata_fs = ext2fs_has_feature_inline_data(sb);
1213         casefold_fs = ext2fs_has_feature_casefold(sb);
1214
1215         /*
1216          * Allocate bitmaps structures
1217          */
1218         pctx.errcode = e2fsck_allocate_inode_bitmap(fs, _("in-use inode map"),
1219                                                     EXT2FS_BMAP64_RBTREE,
1220                                                     "inode_used_map",
1221                                                     &ctx->inode_used_map);
1222         if (pctx.errcode) {
1223                 pctx.num = 1;
1224                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1225                 ctx->flags |= E2F_FLAG_ABORT;
1226                 return;
1227         }
1228         pctx.errcode = e2fsck_allocate_inode_bitmap(fs,
1229                         _("directory inode map"),
1230                         EXT2FS_BMAP64_AUTODIR,
1231                         "inode_dir_map", &ctx->inode_dir_map);
1232         if (pctx.errcode) {
1233                 pctx.num = 2;
1234                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1235                 ctx->flags |= E2F_FLAG_ABORT;
1236                 return;
1237         }
1238         pctx.errcode = e2fsck_allocate_inode_bitmap(fs,
1239                         _("regular file inode map"), EXT2FS_BMAP64_RBTREE,
1240                         "inode_reg_map", &ctx->inode_reg_map);
1241         if (pctx.errcode) {
1242                 pctx.num = 6;
1243                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1244                 ctx->flags |= E2F_FLAG_ABORT;
1245                 return;
1246         }
1247         pctx.errcode = e2fsck_allocate_subcluster_bitmap(fs,
1248                         _("in-use block map"), EXT2FS_BMAP64_RBTREE,
1249                         "block_found_map", &ctx->block_found_map);
1250         if (pctx.errcode) {
1251                 pctx.num = 1;
1252                 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
1253                 ctx->flags |= E2F_FLAG_ABORT;
1254                 return;
1255         }
1256         pctx.errcode = e2fsck_allocate_block_bitmap(fs,
1257                         _("metadata block map"), EXT2FS_BMAP64_RBTREE,
1258                         "block_metadata_map", &ctx->block_metadata_map);
1259         if (pctx.errcode) {
1260                 pctx.num = 1;
1261                 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
1262                 ctx->flags |= E2F_FLAG_ABORT;
1263                 return;
1264         }
1265         if (casefold_fs) {
1266                 pctx.errcode =
1267                         e2fsck_allocate_inode_bitmap(fs,
1268                                                      _("inode casefold map"),
1269                                                      EXT2FS_BMAP64_RBTREE,
1270                                                      "inode_casefold_map",
1271                                                      &ctx->inode_casefold_map);
1272                 if (pctx.errcode) {
1273                         pctx.num = 1;
1274                         fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1275                         ctx->flags |= E2F_FLAG_ABORT;
1276                         return;
1277                 }
1278         }
1279         pctx.errcode = e2fsck_setup_icount(ctx, "inode_link_info", 0, NULL,
1280                                            &ctx->inode_link_info);
1281         if (pctx.errcode) {
1282                 fix_problem(ctx, PR_1_ALLOCATE_ICOUNT, &pctx);
1283                 ctx->flags |= E2F_FLAG_ABORT;
1284                 return;
1285         }
1286         bufsize = inode_size;
1287         if (bufsize < sizeof(struct ext2_inode_large))
1288                 bufsize = sizeof(struct ext2_inode_large);
1289         inode = (struct ext2_inode *)
1290                 e2fsck_allocate_memory(ctx, bufsize, "scratch inode");
1291
1292         inodes_to_process = (struct process_inode_block *)
1293                 e2fsck_allocate_memory(ctx,
1294                                        (ctx->process_inode_size *
1295                                         sizeof(struct process_inode_block)),
1296                                        "array of inodes to process");
1297         process_inode_count = 0;
1298
1299         pctx.errcode = ext2fs_init_dblist(fs, 0);
1300         if (pctx.errcode) {
1301                 fix_problem(ctx, PR_1_ALLOCATE_DBCOUNT, &pctx);
1302                 ctx->flags |= E2F_FLAG_ABORT;
1303                 goto endit;
1304         }
1305
1306         /*
1307          * If the last orphan field is set, clear it, since the pass1
1308          * processing will automatically find and clear the orphans.
1309          * In the future, we may want to try using the last_orphan
1310          * linked list ourselves, but for now, we clear it so that the
1311          * ext3 mount code won't get confused.
1312          */
1313         if (!(ctx->options & E2F_OPT_READONLY)) {
1314                 if (fs->super->s_last_orphan) {
1315                         fs->super->s_last_orphan = 0;
1316                         ext2fs_mark_super_dirty(fs);
1317                 }
1318         }
1319
1320         mark_table_blocks(ctx);
1321         pctx.errcode = ext2fs_convert_subcluster_bitmap(fs,
1322                                                 &ctx->block_found_map);
1323         if (pctx.errcode) {
1324                 fix_problem(ctx, PR_1_CONVERT_SUBCLUSTER, &pctx);
1325                 ctx->flags |= E2F_FLAG_ABORT;
1326                 goto endit;
1327         }
1328         block_buf = (char *) e2fsck_allocate_memory(ctx, fs->blocksize * 3,
1329                                                     "block interate buffer");
1330         if (EXT2_INODE_SIZE(fs->super) == EXT2_GOOD_OLD_INODE_SIZE)
1331                 e2fsck_use_inode_shortcuts(ctx, 1);
1332         e2fsck_intercept_block_allocations(ctx);
1333         old_op = ehandler_operation(_("opening inode scan"));
1334         pctx.errcode = ext2fs_open_inode_scan(fs, ctx->inode_buffer_blocks,
1335                                               &scan);
1336         ehandler_operation(old_op);
1337         if (pctx.errcode) {
1338                 fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx);
1339                 ctx->flags |= E2F_FLAG_ABORT;
1340                 goto endit;
1341         }
1342         ext2fs_inode_scan_flags(scan, EXT2_SF_SKIP_MISSING_ITABLE |
1343                                       EXT2_SF_WARN_GARBAGE_INODES, 0);
1344         ctx->stashed_inode = inode;
1345         scan_struct.ctx = ctx;
1346         scan_struct.block_buf = block_buf;
1347         ext2fs_set_inode_callback(scan, scan_callback, &scan_struct);
1348         if (ctx->progress && ((ctx->progress)(ctx, 1, 0,
1349                                               ctx->fs->group_desc_count)))
1350                 goto endit;
1351         if ((fs->super->s_wtime &&
1352              fs->super->s_wtime < fs->super->s_inodes_count) ||
1353             (fs->super->s_mtime &&
1354              fs->super->s_mtime < fs->super->s_inodes_count) ||
1355             (fs->super->s_mkfs_time &&
1356              fs->super->s_mkfs_time < fs->super->s_inodes_count))
1357                 low_dtime_check = 0;
1358
1359         if (ext2fs_has_feature_mmp(fs->super) &&
1360             fs->super->s_mmp_block > fs->super->s_first_data_block &&
1361             fs->super->s_mmp_block < ext2fs_blocks_count(fs->super))
1362                 ext2fs_mark_block_bitmap2(ctx->block_found_map,
1363                                           fs->super->s_mmp_block);
1364
1365         /* Set up ctx->lost_and_found if possible */
1366         (void) e2fsck_get_lost_and_found(ctx, 0);
1367
1368         while (1) {
1369                 if (ino % (fs->super->s_inodes_per_group * 4) == 1) {
1370                         if (e2fsck_mmp_update(fs))
1371                                 fatal_error(ctx, 0);
1372                 }
1373                 old_op = ehandler_operation(eop_next_inode);
1374                 pctx.errcode = ext2fs_get_next_inode_full(scan, &ino,
1375                                                           inode, inode_size);
1376                 if (ino > ino_threshold)
1377                         pass1_readahead(ctx, &ra_group, &ino_threshold);
1378                 ehandler_operation(old_op);
1379                 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1380                         goto endit;
1381                 if (pctx.errcode == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE) {
1382                         /*
1383                          * If badblocks says badblocks is bad, offer to clear
1384                          * the list, update the in-core bb list, and restart
1385                          * the inode scan.
1386                          */
1387                         if (ino == EXT2_BAD_INO &&
1388                             fix_problem(ctx, PR_1_BADBLOCKS_IN_BADBLOCKS,
1389                                         &pctx)) {
1390                                 errcode_t err;
1391
1392                                 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1393                                 ext2fs_badblocks_list_free(ctx->fs->badblocks);
1394                                 ctx->fs->badblocks = NULL;
1395                                 err = ext2fs_read_bb_inode(ctx->fs,
1396                                                         &ctx->fs->badblocks);
1397                                 if (err) {
1398                                         fix_problem(ctx, PR_1_ISCAN_ERROR,
1399                                                     &pctx);
1400                                         ctx->flags |= E2F_FLAG_ABORT;
1401                                 } else
1402                                         ctx->flags |= E2F_FLAG_RESTART;
1403                                 goto endit;
1404                         }
1405                         if (!ctx->inode_bb_map)
1406                                 alloc_bb_map(ctx);
1407                         ext2fs_mark_inode_bitmap2(ctx->inode_bb_map, ino);
1408                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1409                         continue;
1410                 }
1411                 if (pctx.errcode &&
1412                     pctx.errcode != EXT2_ET_INODE_CSUM_INVALID &&
1413                     pctx.errcode != EXT2_ET_INODE_IS_GARBAGE) {
1414                         fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx);
1415                         ctx->flags |= E2F_FLAG_ABORT;
1416                         goto endit;
1417                 }
1418                 if (!ino)
1419                         break;
1420                 pctx.ino = ino;
1421                 pctx.inode = inode;
1422                 ctx->stashed_ino = ino;
1423
1424                 /* Clear trashed inode? */
1425                 if (pctx.errcode == EXT2_ET_INODE_IS_GARBAGE &&
1426                     inode->i_links_count > 0 &&
1427                     fix_problem(ctx, PR_1_INODE_IS_GARBAGE, &pctx)) {
1428                         pctx.errcode = 0;
1429                         e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1430                 }
1431                 failed_csum = pctx.errcode != 0;
1432
1433                 /*
1434                  * Check for inodes who might have been part of the
1435                  * orphaned list linked list.  They should have gotten
1436                  * dealt with by now, unless the list had somehow been
1437                  * corrupted.
1438                  *
1439                  * FIXME: In the future, inodes which are still in use
1440                  * (and which are therefore) pending truncation should
1441                  * be handled specially.  Right now we just clear the
1442                  * dtime field, and the normal e2fsck handling of
1443                  * inodes where i_size and the inode blocks are
1444                  * inconsistent is to fix i_size, instead of releasing
1445                  * the extra blocks.  This won't catch the inodes that
1446                  * was at the end of the orphan list, but it's better
1447                  * than nothing.  The right answer is that there
1448                  * shouldn't be any bugs in the orphan list handling.  :-)
1449                  */
1450                 if (inode->i_dtime && low_dtime_check &&
1451                     inode->i_dtime < ctx->fs->super->s_inodes_count) {
1452                         if (fix_problem(ctx, PR_1_LOW_DTIME, &pctx)) {
1453                                 inode->i_dtime = inode->i_links_count ?
1454                                         0 : ctx->now;
1455                                 e2fsck_write_inode(ctx, ino, inode,
1456                                                    "pass1");
1457                                 failed_csum = 0;
1458                         }
1459                 }
1460
1461                 if (inode->i_links_count) {
1462                         pctx.errcode = ext2fs_icount_store(ctx->inode_link_info,
1463                                            ino, inode->i_links_count);
1464                         if (pctx.errcode) {
1465                                 pctx.num = inode->i_links_count;
1466                                 fix_problem(ctx, PR_1_ICOUNT_STORE, &pctx);
1467                                 ctx->flags |= E2F_FLAG_ABORT;
1468                                 goto endit;
1469                         }
1470                 } else if ((ino >= EXT2_FIRST_INODE(fs->super)) &&
1471                            !quota_inum_is_reserved(fs, ino)) {
1472                         if (!inode->i_dtime && inode->i_mode) {
1473                                 if (fix_problem(ctx,
1474                                             PR_1_ZERO_DTIME, &pctx)) {
1475                                         inode->i_dtime = ctx->now;
1476                                         e2fsck_write_inode(ctx, ino, inode,
1477                                                            "pass1");
1478                                         failed_csum = 0;
1479                                 }
1480                         }
1481                         FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1482                         continue;
1483                 }
1484
1485                 if ((inode->i_flags & EXT4_CASEFOLD_FL) &&
1486                     ((!LINUX_S_ISDIR(inode->i_mode) &&
1487                       fix_problem(ctx, PR_1_CASEFOLD_NONDIR, &pctx)) ||
1488                      (!casefold_fs &&
1489                       fix_problem(ctx, PR_1_CASEFOLD_FEATURE, &pctx)))) {
1490                         inode->i_flags &= ~EXT4_CASEFOLD_FL;
1491                         e2fsck_write_inode(ctx, ino, inode, "pass1");
1492                 }
1493
1494                 /* Conflicting inlinedata/extents inode flags? */
1495                 if ((inode->i_flags & EXT4_INLINE_DATA_FL) &&
1496                     (inode->i_flags & EXT4_EXTENTS_FL)) {
1497                         int res = fix_inline_data_extents_file(ctx, ino, inode,
1498                                                                inode_size,
1499                                                                &pctx);
1500                         if (res < 0) {
1501                                 /* skip FINISH_INODE_LOOP */
1502                                 continue;
1503                         }
1504                 }
1505
1506                 /* Test for incorrect inline_data flags settings. */
1507                 if ((inode->i_flags & EXT4_INLINE_DATA_FL) && !inlinedata_fs &&
1508                     (ino >= EXT2_FIRST_INODE(fs->super))) {
1509                         size_t size = 0;
1510
1511                         pctx.errcode = get_inline_data_ea_size(fs, ino, &size);
1512                         if (!pctx.errcode &&
1513                             fix_problem(ctx, PR_1_INLINE_DATA_FEATURE, &pctx)) {
1514                                 ext2fs_set_feature_inline_data(sb);
1515                                 ext2fs_mark_super_dirty(fs);
1516                                 inlinedata_fs = 1;
1517                         } else if (fix_problem(ctx, PR_1_INLINE_DATA_SET, &pctx)) {
1518                                 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1519                                 /* skip FINISH_INODE_LOOP */
1520                                 continue;
1521                         }
1522                 }
1523
1524                 /* Test for inline data flag but no attr */
1525                 if ((inode->i_flags & EXT4_INLINE_DATA_FL) && inlinedata_fs &&
1526                     (ino >= EXT2_FIRST_INODE(fs->super))) {
1527                         size_t size = 0;
1528                         errcode_t err;
1529                         int flags;
1530
1531                         flags = fs->flags;
1532                         if (failed_csum)
1533                                 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
1534                         err = get_inline_data_ea_size(fs, ino, &size);
1535                         fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
1536                                     (fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
1537
1538                         switch (err) {
1539                         case 0:
1540                                 /* Everything is awesome... */
1541                                 break;
1542                         case EXT2_ET_BAD_EA_BLOCK_NUM:
1543                         case EXT2_ET_BAD_EA_HASH:
1544                         case EXT2_ET_BAD_EA_HEADER:
1545                         case EXT2_ET_EA_BAD_NAME_LEN:
1546                         case EXT2_ET_EA_BAD_VALUE_SIZE:
1547                         case EXT2_ET_EA_KEY_NOT_FOUND:
1548                         case EXT2_ET_EA_NO_SPACE:
1549                         case EXT2_ET_MISSING_EA_FEATURE:
1550                         case EXT2_ET_INLINE_DATA_CANT_ITERATE:
1551                         case EXT2_ET_INLINE_DATA_NO_BLOCK:
1552                         case EXT2_ET_INLINE_DATA_NO_SPACE:
1553                         case EXT2_ET_NO_INLINE_DATA:
1554                         case EXT2_ET_EXT_ATTR_CSUM_INVALID:
1555                         case EXT2_ET_EA_BAD_VALUE_OFFSET:
1556                         case EXT2_ET_EA_INODE_CORRUPTED:
1557                                 /* broken EA or no system.data EA; truncate */
1558                                 if (fix_problem(ctx, PR_1_INLINE_DATA_NO_ATTR,
1559                                                 &pctx)) {
1560                                         err = ext2fs_inode_size_set(fs, inode, 0);
1561                                         if (err) {
1562                                                 pctx.errcode = err;
1563                                                 ctx->flags |= E2F_FLAG_ABORT;
1564                                                 goto endit;
1565                                         }
1566                                         inode->i_flags &= ~EXT4_INLINE_DATA_FL;
1567                                         memset(&inode->i_block, 0,
1568                                                sizeof(inode->i_block));
1569                                         e2fsck_write_inode(ctx, ino, inode,
1570                                                            "pass1");
1571                                         failed_csum = 0;
1572                                 }
1573                                 break;
1574                         default:
1575                                 /* Some other kind of non-xattr error? */
1576                                 pctx.errcode = err;
1577                                 ctx->flags |= E2F_FLAG_ABORT;
1578                                 goto endit;
1579                         }
1580                 }
1581
1582                 /*
1583                  * Test for incorrect extent flag settings.
1584                  *
1585                  * On big-endian machines we must be careful:
1586                  * When the inode is read, the i_block array is not swapped
1587                  * if the extent flag is set.  Therefore if we are testing
1588                  * for or fixing a wrongly-set flag, we must potentially
1589                  * (un)swap before testing, or after fixing.
1590                  */
1591
1592                 /*
1593                  * In this case the extents flag was set when read, so
1594                  * extent_header_verify is ok.  If the inode is cleared,
1595                  * no need to swap... so no extra swapping here.
1596                  */
1597                 if ((inode->i_flags & EXT4_EXTENTS_FL) && !extent_fs &&
1598                     (inode->i_links_count || (ino == EXT2_BAD_INO) ||
1599                      (ino == EXT2_ROOT_INO) || (ino == EXT2_JOURNAL_INO))) {
1600                         if ((ext2fs_extent_header_verify(inode->i_block,
1601                                                  sizeof(inode->i_block)) == 0) &&
1602                             fix_problem(ctx, PR_1_EXTENT_FEATURE, &pctx)) {
1603                                 ext2fs_set_feature_extents(sb);
1604                                 ext2fs_mark_super_dirty(fs);
1605                                 extent_fs = 1;
1606                         } else if (fix_problem(ctx, PR_1_EXTENTS_SET, &pctx)) {
1607                         clear_inode:
1608                                 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1609                                 if (ino == EXT2_BAD_INO)
1610                                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map,
1611                                                                  ino);
1612                                 /* skip FINISH_INODE_LOOP */
1613                                 continue;
1614                         }
1615                 }
1616
1617                 /*
1618                  * For big-endian machines:
1619                  * If the inode didn't have the extents flag set when it
1620                  * was read, then the i_blocks array was swapped.  To test
1621                  * as an extents header, we must swap it back first.
1622                  * IF we then set the extents flag, the entire i_block
1623                  * array must be un/re-swapped to make it proper extents data.
1624                  */
1625                 if (extent_fs && !(inode->i_flags & EXT4_EXTENTS_FL) &&
1626                     (inode->i_links_count || (ino == EXT2_BAD_INO) ||
1627                      (ino == EXT2_ROOT_INO) || (ino == EXT2_JOURNAL_INO)) &&
1628                     (LINUX_S_ISREG(inode->i_mode) ||
1629                      LINUX_S_ISDIR(inode->i_mode))) {
1630                         void *ehp;
1631 #ifdef WORDS_BIGENDIAN
1632                         __u32 tmp_block[EXT2_N_BLOCKS];
1633
1634                         for (i = 0; i < EXT2_N_BLOCKS; i++)
1635                                 tmp_block[i] = ext2fs_swab32(inode->i_block[i]);
1636                         ehp = tmp_block;
1637 #else
1638                         ehp = inode->i_block;
1639 #endif
1640                         if ((ext2fs_extent_header_verify(ehp,
1641                                          sizeof(inode->i_block)) == 0) &&
1642                             (fix_problem(ctx, PR_1_UNSET_EXTENT_FL, &pctx))) {
1643                                 inode->i_flags |= EXT4_EXTENTS_FL;
1644 #ifdef WORDS_BIGENDIAN
1645                                 memcpy(inode->i_block, tmp_block,
1646                                        sizeof(inode->i_block));
1647 #endif
1648                                 e2fsck_write_inode(ctx, ino, inode, "pass1");
1649                                 failed_csum = 0;
1650                         }
1651                 }
1652
1653                 if (ino == EXT2_BAD_INO) {
1654                         struct process_block_struct pb;
1655
1656                         if ((failed_csum || inode->i_mode || inode->i_uid ||
1657                              inode->i_gid || inode->i_links_count ||
1658                              (inode->i_flags & EXT4_INLINE_DATA_FL) ||
1659                              inode->i_file_acl) &&
1660                             fix_problem(ctx, PR_1_INVALID_BAD_INODE, &pctx)) {
1661                                 memset(inode, 0, sizeof(struct ext2_inode));
1662                                 e2fsck_write_inode(ctx, ino, inode,
1663                                                    "clear bad inode");
1664                                 failed_csum = 0;
1665                         }
1666
1667                         pctx.errcode = ext2fs_copy_bitmap(ctx->block_found_map,
1668                                                           &pb.fs_meta_blocks);
1669                         if (pctx.errcode) {
1670                                 pctx.num = 4;
1671                                 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
1672                                 ctx->flags |= E2F_FLAG_ABORT;
1673                                 goto endit;
1674                         }
1675                         pb.ino = EXT2_BAD_INO;
1676                         pb.num_blocks = pb.last_block = 0;
1677                         pb.last_db_block = -1;
1678                         pb.num_illegal_blocks = 0;
1679                         pb.suppress = 0; pb.clear = 0; pb.is_dir = 0;
1680                         pb.is_reg = 0; pb.fragmented = 0; pb.bbcheck = 0;
1681                         pb.inode = inode;
1682                         pb.pctx = &pctx;
1683                         pb.ctx = ctx;
1684                         pctx.errcode = ext2fs_block_iterate3(fs, ino, 0,
1685                                      block_buf, process_bad_block, &pb);
1686                         ext2fs_free_block_bitmap(pb.fs_meta_blocks);
1687                         if (pctx.errcode) {
1688                                 fix_problem(ctx, PR_1_BLOCK_ITERATE, &pctx);
1689                                 ctx->flags |= E2F_FLAG_ABORT;
1690                                 goto endit;
1691                         }
1692                         if (pb.bbcheck)
1693                                 if (!fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK_PROMPT, &pctx)) {
1694                                 ctx->flags |= E2F_FLAG_ABORT;
1695                                 goto endit;
1696                         }
1697                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1698                         clear_problem_context(&pctx);
1699                         FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1700                         continue;
1701                 } else if (ino == EXT2_ROOT_INO) {
1702                         /*
1703                          * Make sure the root inode is a directory; if
1704                          * not, offer to clear it.  It will be
1705                          * regenerated in pass #3.
1706                          */
1707                         if (!LINUX_S_ISDIR(inode->i_mode)) {
1708                                 if (fix_problem(ctx, PR_1_ROOT_NO_DIR, &pctx))
1709                                         goto clear_inode;
1710                         }
1711                         /*
1712                          * If dtime is set, offer to clear it.  mke2fs
1713                          * version 0.2b created filesystems with the
1714                          * dtime field set for the root and lost+found
1715                          * directories.  We won't worry about
1716                          * /lost+found, since that can be regenerated
1717                          * easily.  But we will fix the root directory
1718                          * as a special case.
1719                          */
1720                         if (inode->i_dtime && inode->i_links_count) {
1721                                 if (fix_problem(ctx, PR_1_ROOT_DTIME, &pctx)) {
1722                                         inode->i_dtime = 0;
1723                                         e2fsck_write_inode(ctx, ino, inode,
1724                                                            "pass1");
1725                                         failed_csum = 0;
1726                                 }
1727                         }
1728                 } else if (ino == EXT2_JOURNAL_INO) {
1729                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1730                         if (fs->super->s_journal_inum == EXT2_JOURNAL_INO) {
1731                                 if (!LINUX_S_ISREG(inode->i_mode) &&
1732                                     fix_problem(ctx, PR_1_JOURNAL_BAD_MODE,
1733                                                 &pctx)) {
1734                                         inode->i_mode = LINUX_S_IFREG;
1735                                         e2fsck_write_inode(ctx, ino, inode,
1736                                                            "pass1");
1737                                         failed_csum = 0;
1738                                 }
1739                                 check_blocks(ctx, &pctx, block_buf, NULL);
1740                                 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1741                                 continue;
1742                         }
1743                         if ((inode->i_links_count ||
1744                              inode->i_blocks || inode->i_block[0]) &&
1745                             fix_problem(ctx, PR_1_JOURNAL_INODE_NOT_CLEAR,
1746                                         &pctx)) {
1747                                 memset(inode, 0, inode_size);
1748                                 ext2fs_icount_store(ctx->inode_link_info,
1749                                                     ino, 0);
1750                                 e2fsck_write_inode_full(ctx, ino, inode,
1751                                                         inode_size, "pass1");
1752                                 failed_csum = 0;
1753                         }
1754                 } else if (quota_inum_is_reserved(fs, ino)) {
1755                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1756                         if (ext2fs_has_feature_quota(fs->super) &&
1757                             quota_inum_is_super(fs->super, ino)) {
1758                                 if (!LINUX_S_ISREG(inode->i_mode) &&
1759                                     fix_problem(ctx, PR_1_QUOTA_BAD_MODE,
1760                                                         &pctx)) {
1761                                         inode->i_mode = LINUX_S_IFREG;
1762                                         e2fsck_write_inode(ctx, ino, inode,
1763                                                         "pass1");
1764                                         failed_csum = 0;
1765                                 }
1766                                 check_blocks(ctx, &pctx, block_buf, NULL);
1767                                 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1768                                 continue;
1769                         }
1770                         if ((inode->i_links_count ||
1771                              inode->i_blocks || inode->i_block[0]) &&
1772                             fix_problem(ctx, PR_1_QUOTA_INODE_NOT_CLEAR,
1773                                         &pctx)) {
1774                                 memset(inode, 0, inode_size);
1775                                 ext2fs_icount_store(ctx->inode_link_info,
1776                                                     ino, 0);
1777                                 e2fsck_write_inode_full(ctx, ino, inode,
1778                                                         inode_size, "pass1");
1779                                 failed_csum = 0;
1780                         }
1781                 } else if (ino < EXT2_FIRST_INODE(fs->super)) {
1782                         problem_t problem = 0;
1783
1784                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1785                         if (ino == EXT2_BOOT_LOADER_INO) {
1786                                 if (LINUX_S_ISDIR(inode->i_mode))
1787                                         problem = PR_1_RESERVED_BAD_MODE;
1788                         } else if (ino == EXT2_RESIZE_INO) {
1789                                 if (inode->i_mode &&
1790                                     !LINUX_S_ISREG(inode->i_mode))
1791                                         problem = PR_1_RESERVED_BAD_MODE;
1792                         } else {
1793                                 if (inode->i_mode != 0)
1794                                         problem = PR_1_RESERVED_BAD_MODE;
1795                         }
1796                         if (problem) {
1797                                 if (fix_problem(ctx, problem, &pctx)) {
1798                                         inode->i_mode = 0;
1799                                         e2fsck_write_inode(ctx, ino, inode,
1800                                                            "pass1");
1801                                         failed_csum = 0;
1802                                 }
1803                         }
1804                         check_blocks(ctx, &pctx, block_buf, NULL);
1805                         FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1806                         continue;
1807                 }
1808
1809                 if (!inode->i_links_count) {
1810                         FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1811                         continue;
1812                 }
1813                 /*
1814                  * n.b.  0.3c ext2fs code didn't clear i_links_count for
1815                  * deleted files.  Oops.
1816                  *
1817                  * Since all new ext2 implementations get this right,
1818                  * we now assume that the case of non-zero
1819                  * i_links_count and non-zero dtime means that we
1820                  * should keep the file, not delete it.
1821                  *
1822                  */
1823                 if (inode->i_dtime) {
1824                         if (fix_problem(ctx, PR_1_SET_DTIME, &pctx)) {
1825                                 inode->i_dtime = 0;
1826                                 e2fsck_write_inode(ctx, ino, inode, "pass1");
1827                                 failed_csum = 0;
1828                         }
1829                 }
1830
1831                 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1832                 switch (fs->super->s_creator_os) {
1833                     case EXT2_OS_HURD:
1834                         frag = inode->osd2.hurd2.h_i_frag;
1835                         fsize = inode->osd2.hurd2.h_i_fsize;
1836                         break;
1837                     default:
1838                         frag = fsize = 0;
1839                 }
1840
1841                 if (inode->i_faddr || frag || fsize ||
1842                     (!ext2fs_has_feature_largedir(fs->super) &&
1843                     (LINUX_S_ISDIR(inode->i_mode) && inode->i_size_high)))
1844                         mark_inode_bad(ctx, ino);
1845                 if ((fs->super->s_creator_os != EXT2_OS_HURD) &&
1846                     !ext2fs_has_feature_64bit(fs->super) &&
1847                     inode->osd2.linux2.l_i_file_acl_high != 0)
1848                         mark_inode_bad(ctx, ino);
1849                 if ((fs->super->s_creator_os != EXT2_OS_HURD) &&
1850                     !ext2fs_has_feature_huge_file(fs->super) &&
1851                     (inode->osd2.linux2.l_i_blocks_hi != 0))
1852                         mark_inode_bad(ctx, ino);
1853                 if (inode->i_flags & EXT2_IMAGIC_FL) {
1854                         if (imagic_fs) {
1855                                 if (!ctx->inode_imagic_map)
1856                                         alloc_imagic_map(ctx);
1857                                 ext2fs_mark_inode_bitmap2(ctx->inode_imagic_map,
1858                                                          ino);
1859                         } else {
1860                                 if (fix_problem(ctx, PR_1_SET_IMAGIC, &pctx)) {
1861                                         inode->i_flags &= ~EXT2_IMAGIC_FL;
1862                                         e2fsck_write_inode(ctx, ino,
1863                                                            inode, "pass1");
1864                                         failed_csum = 0;
1865                                 }
1866                         }
1867                 }
1868
1869                 check_inode_extra_space(ctx, &pctx, &ea_ibody_quota);
1870                 check_is_really_dir(ctx, &pctx, block_buf);
1871
1872                 /*
1873                  * ext2fs_inode_has_valid_blocks2 does not actually look
1874                  * at i_block[] values, so not endian-sensitive here.
1875                  */
1876                 if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL) &&
1877                     LINUX_S_ISLNK(inode->i_mode) &&
1878                     !ext2fs_inode_has_valid_blocks2(fs, inode) &&
1879                     fix_problem(ctx, PR_1_FAST_SYMLINK_EXTENT_FL, &pctx)) {
1880                         inode->i_flags &= ~EXT4_EXTENTS_FL;
1881                         e2fsck_write_inode(ctx, ino, inode, "pass1");
1882                         failed_csum = 0;
1883                 }
1884
1885                 if ((inode->i_flags & EXT4_ENCRYPT_FL) &&
1886                     add_encrypted_file(ctx, &pctx) < 0)
1887                         goto clear_inode;
1888
1889                 if (casefold_fs && inode->i_flags & EXT4_CASEFOLD_FL)
1890                         ext2fs_mark_inode_bitmap2(ctx->inode_casefold_map, ino);
1891
1892                 if (LINUX_S_ISDIR(inode->i_mode)) {
1893                         ext2fs_mark_inode_bitmap2(ctx->inode_dir_map, ino);
1894                         e2fsck_add_dir_info(ctx, ino, 0);
1895                         ctx->fs_directory_count++;
1896                         if (inode->i_flags & EXT4_CASEFOLD_FL)
1897                                 add_casefolded_dir(ctx, ino);
1898                 } else if (LINUX_S_ISREG (inode->i_mode)) {
1899                         ext2fs_mark_inode_bitmap2(ctx->inode_reg_map, ino);
1900                         ctx->fs_regular_count++;
1901                 } else if (LINUX_S_ISCHR (inode->i_mode) &&
1902                            e2fsck_pass1_check_device_inode(fs, inode)) {
1903                         check_extents_inlinedata(ctx, &pctx);
1904                         check_immutable(ctx, &pctx);
1905                         check_size(ctx, &pctx);
1906                         ctx->fs_chardev_count++;
1907                 } else if (LINUX_S_ISBLK (inode->i_mode) &&
1908                            e2fsck_pass1_check_device_inode(fs, inode)) {
1909                         check_extents_inlinedata(ctx, &pctx);
1910                         check_immutable(ctx, &pctx);
1911                         check_size(ctx, &pctx);
1912                         ctx->fs_blockdev_count++;
1913                 } else if (LINUX_S_ISLNK (inode->i_mode) &&
1914                            e2fsck_pass1_check_symlink(fs, ino, inode,
1915                                                       block_buf)) {
1916                         check_immutable(ctx, &pctx);
1917                         ctx->fs_symlinks_count++;
1918                         if (inode->i_flags & EXT4_INLINE_DATA_FL) {
1919                                 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1920                                 continue;
1921                         } else if (ext2fs_is_fast_symlink(inode)) {
1922                                 ctx->fs_fast_symlinks_count++;
1923                                 check_blocks(ctx, &pctx, block_buf,
1924                                              &ea_ibody_quota);
1925                                 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1926                                 continue;
1927                         }
1928                 }
1929                 else if (LINUX_S_ISFIFO (inode->i_mode) &&
1930                          e2fsck_pass1_check_device_inode(fs, inode)) {
1931                         check_extents_inlinedata(ctx, &pctx);
1932                         check_immutable(ctx, &pctx);
1933                         check_size(ctx, &pctx);
1934                         ctx->fs_fifo_count++;
1935                 } else if ((LINUX_S_ISSOCK (inode->i_mode)) &&
1936                            e2fsck_pass1_check_device_inode(fs, inode)) {
1937                         check_extents_inlinedata(ctx, &pctx);
1938                         check_immutable(ctx, &pctx);
1939                         check_size(ctx, &pctx);
1940                         ctx->fs_sockets_count++;
1941                 } else
1942                         mark_inode_bad(ctx, ino);
1943                 if (!(inode->i_flags & EXT4_EXTENTS_FL) &&
1944                     !(inode->i_flags & EXT4_INLINE_DATA_FL)) {
1945                         if (inode->i_block[EXT2_IND_BLOCK])
1946                                 ctx->fs_ind_count++;
1947                         if (inode->i_block[EXT2_DIND_BLOCK])
1948                                 ctx->fs_dind_count++;
1949                         if (inode->i_block[EXT2_TIND_BLOCK])
1950                                 ctx->fs_tind_count++;
1951                 }
1952                 if (!(inode->i_flags & EXT4_EXTENTS_FL) &&
1953                     !(inode->i_flags & EXT4_INLINE_DATA_FL) &&
1954                     (inode->i_block[EXT2_IND_BLOCK] ||
1955                      inode->i_block[EXT2_DIND_BLOCK] ||
1956                      inode->i_block[EXT2_TIND_BLOCK] ||
1957                      ext2fs_file_acl_block(fs, inode))) {
1958                         struct process_inode_block *itp;
1959
1960                         itp = &inodes_to_process[process_inode_count];
1961                         itp->ino = ino;
1962                         itp->ea_ibody_quota = ea_ibody_quota;
1963                         if (inode_size < sizeof(struct ext2_inode_large))
1964                                 memcpy(&itp->inode, inode, inode_size);
1965                         else
1966                                 memcpy(&itp->inode, inode, sizeof(itp->inode));
1967                         process_inode_count++;
1968                 } else
1969                         check_blocks(ctx, &pctx, block_buf, &ea_ibody_quota);
1970
1971                 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1972
1973                 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1974                         goto endit;
1975
1976                 if (process_inode_count >= ctx->process_inode_size) {
1977                         process_inodes(ctx, block_buf);
1978
1979                         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1980                                 goto endit;
1981                 }
1982         }
1983         process_inodes(ctx, block_buf);
1984         ext2fs_close_inode_scan(scan);
1985         scan = NULL;
1986
1987         reserve_block_for_root_repair(ctx);
1988         reserve_block_for_lnf_repair(ctx);
1989
1990         /*
1991          * If any extended attribute blocks' reference counts need to
1992          * be adjusted, either up (ctx->refcount_extra), or down
1993          * (ctx->refcount), then fix them.
1994          */
1995         if (ctx->refcount) {
1996                 adjust_extattr_refcount(ctx, ctx->refcount, block_buf, -1);
1997                 ea_refcount_free(ctx->refcount);
1998                 ctx->refcount = 0;
1999         }
2000         if (ctx->refcount_extra) {
2001                 adjust_extattr_refcount(ctx, ctx->refcount_extra,
2002                                         block_buf, +1);
2003                 ea_refcount_free(ctx->refcount_extra);
2004                 ctx->refcount_extra = 0;
2005         }
2006
2007         if (ctx->ea_block_quota_blocks) {
2008                 ea_refcount_free(ctx->ea_block_quota_blocks);
2009                 ctx->ea_block_quota_blocks = 0;
2010         }
2011
2012         if (ctx->ea_block_quota_inodes) {
2013                 ea_refcount_free(ctx->ea_block_quota_inodes);
2014                 ctx->ea_block_quota_inodes = 0;
2015         }
2016
2017         if (ctx->invalid_bitmaps)
2018                 handle_fs_bad_blocks(ctx);
2019
2020         /* We don't need the block_ea_map any more */
2021         if (ctx->block_ea_map) {
2022                 ext2fs_free_block_bitmap(ctx->block_ea_map);
2023                 ctx->block_ea_map = 0;
2024         }
2025
2026         /* We don't need the encryption policy => ID map any more */
2027         destroy_encryption_policy_map(ctx);
2028
2029         if (ctx->flags & E2F_FLAG_RESIZE_INODE) {
2030                 clear_problem_context(&pctx);
2031                 pctx.errcode = ext2fs_create_resize_inode(fs);
2032                 if (pctx.errcode) {
2033                         if (!fix_problem(ctx, PR_1_RESIZE_INODE_CREATE,
2034                                          &pctx)) {
2035                                 ctx->flags |= E2F_FLAG_ABORT;
2036                                 goto endit;
2037                         }
2038                         pctx.errcode = 0;
2039                 }
2040                 if (!pctx.errcode) {
2041                         e2fsck_read_inode(ctx, EXT2_RESIZE_INO, inode,
2042                                           "recreate inode");
2043                         inode->i_mtime = ctx->now;
2044                         e2fsck_write_inode(ctx, EXT2_RESIZE_INO, inode,
2045                                            "recreate inode");
2046                 }
2047                 ctx->flags &= ~E2F_FLAG_RESIZE_INODE;
2048         }
2049
2050         if (ctx->flags & E2F_FLAG_RESTART) {
2051                 /*
2052                  * Only the master copy of the superblock and block
2053                  * group descriptors are going to be written during a
2054                  * restart, so set the superblock to be used to be the
2055                  * master superblock.
2056                  */
2057                 ctx->use_superblock = 0;
2058                 goto endit;
2059         }
2060
2061         if (ctx->large_dirs && !ext2fs_has_feature_largedir(fs->super)) {
2062                 if (fix_problem(ctx, PR_2_FEATURE_LARGE_DIRS, &pctx)) {
2063                         ext2fs_set_feature_largedir(fs->super);
2064                         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
2065                         ext2fs_mark_super_dirty(fs);
2066                 }
2067                 if (fs->super->s_rev_level == EXT2_GOOD_OLD_REV &&
2068                     fix_problem(ctx, PR_1_FS_REV_LEVEL, &pctx)) {
2069                         ext2fs_update_dynamic_rev(fs);
2070                         ext2fs_mark_super_dirty(fs);
2071                 }
2072         }
2073
2074         if (ctx->block_dup_map) {
2075                 if (ctx->options & E2F_OPT_PREEN) {
2076                         clear_problem_context(&pctx);
2077                         fix_problem(ctx, PR_1_DUP_BLOCKS_PREENSTOP, &pctx);
2078                 }
2079                 e2fsck_pass1_dupblocks(ctx, block_buf);
2080         }
2081         ctx->flags |= E2F_FLAG_ALLOC_OK;
2082 endit:
2083         e2fsck_use_inode_shortcuts(ctx, 0);
2084         ext2fs_free_mem(&inodes_to_process);
2085         inodes_to_process = 0;
2086
2087         if (scan)
2088                 ext2fs_close_inode_scan(scan);
2089         if (block_buf)
2090                 ext2fs_free_mem(&block_buf);
2091         if (inode)
2092                 ext2fs_free_mem(&inode);
2093
2094         /*
2095          * The l+f inode may have been cleared, so zap it now and
2096          * later passes will recalculate it if necessary
2097          */
2098         ctx->lost_and_found = 0;
2099
2100         if ((ctx->flags & E2F_FLAG_SIGNAL_MASK) == 0)
2101                 print_resource_track(ctx, _("Pass 1"), &rtrack, ctx->fs->io);
2102         else
2103                 ctx->invalid_bitmaps++;
2104 }
2105 #undef FINISH_INODE_LOOP
2106
2107 /*
2108  * When the inode_scan routines call this callback at the end of the
2109  * glock group, call process_inodes.
2110  */
2111 static errcode_t scan_callback(ext2_filsys fs,
2112                                ext2_inode_scan scan EXT2FS_ATTR((unused)),
2113                                dgrp_t group, void * priv_data)
2114 {
2115         struct scan_callback_struct *scan_struct;
2116         e2fsck_t ctx;
2117
2118         scan_struct = (struct scan_callback_struct *) priv_data;
2119         ctx = scan_struct->ctx;
2120
2121         process_inodes((e2fsck_t) fs->priv_data, scan_struct->block_buf);
2122
2123         if (ctx->progress)
2124                 if ((ctx->progress)(ctx, 1, group+1,
2125                                     ctx->fs->group_desc_count))
2126                         return EXT2_ET_CANCEL_REQUESTED;
2127
2128         return 0;
2129 }
2130
2131 /*
2132  * Process the inodes in the "inodes to process" list.
2133  */
2134 static void process_inodes(e2fsck_t ctx, char *block_buf)
2135 {
2136         int                     i;
2137         struct ext2_inode       *old_stashed_inode;
2138         ext2_ino_t              old_stashed_ino;
2139         const char              *old_operation;
2140         char                    buf[80];
2141         struct problem_context  pctx;
2142
2143 #if 0
2144         printf("begin process_inodes: ");
2145 #endif
2146         if (process_inode_count == 0)
2147                 return;
2148         old_operation = ehandler_operation(0);
2149         old_stashed_inode = ctx->stashed_inode;
2150         old_stashed_ino = ctx->stashed_ino;
2151         qsort(inodes_to_process, process_inode_count,
2152                       sizeof(struct process_inode_block), process_inode_cmp);
2153         clear_problem_context(&pctx);
2154         for (i=0; i < process_inode_count; i++) {
2155                 pctx.inode = ctx->stashed_inode =
2156                         (struct ext2_inode *) &inodes_to_process[i].inode;
2157                 pctx.ino = ctx->stashed_ino = inodes_to_process[i].ino;
2158
2159 #if 0
2160                 printf("%u ", pctx.ino);
2161 #endif
2162                 sprintf(buf, _("reading indirect blocks of inode %u"),
2163                         pctx.ino);
2164                 ehandler_operation(buf);
2165                 check_blocks(ctx, &pctx, block_buf,
2166                              &inodes_to_process[i].ea_ibody_quota);
2167                 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
2168                         break;
2169         }
2170         ctx->stashed_inode = old_stashed_inode;
2171         ctx->stashed_ino = old_stashed_ino;
2172         process_inode_count = 0;
2173 #if 0
2174         printf("end process inodes\n");
2175 #endif
2176         ehandler_operation(old_operation);
2177 }
2178
2179 static EXT2_QSORT_TYPE process_inode_cmp(const void *a, const void *b)
2180 {
2181         const struct process_inode_block *ib_a =
2182                 (const struct process_inode_block *) a;
2183         const struct process_inode_block *ib_b =
2184                 (const struct process_inode_block *) b;
2185         int     ret;
2186
2187         ret = (ib_a->inode.i_block[EXT2_IND_BLOCK] -
2188                ib_b->inode.i_block[EXT2_IND_BLOCK]);
2189         if (ret == 0)
2190                 /*
2191                  * We only call process_inodes() for non-extent
2192                  * inodes, so it's OK to pass NULL to
2193                  * ext2fs_file_acl_block() here.
2194                  */
2195                 ret = ext2fs_file_acl_block(0, ext2fs_const_inode(&ib_a->inode)) -
2196                         ext2fs_file_acl_block(0, ext2fs_const_inode(&ib_b->inode));
2197         if (ret == 0)
2198                 ret = ib_a->ino - ib_b->ino;
2199         return ret;
2200 }
2201
2202 /*
2203  * Mark an inode as being bad in some what
2204  */
2205 static void mark_inode_bad(e2fsck_t ctx, ino_t ino)
2206 {
2207         struct          problem_context pctx;
2208
2209         if (!ctx->inode_bad_map) {
2210                 clear_problem_context(&pctx);
2211
2212                 pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
2213                                 _("bad inode map"), EXT2FS_BMAP64_RBTREE,
2214                                 "inode_bad_map", &ctx->inode_bad_map);
2215                 if (pctx.errcode) {
2216                         pctx.num = 3;
2217                         fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
2218                         /* Should never get here */
2219                         ctx->flags |= E2F_FLAG_ABORT;
2220                         return;
2221                 }
2222         }
2223         ext2fs_mark_inode_bitmap2(ctx->inode_bad_map, ino);
2224 }
2225
2226 static void add_casefolded_dir(e2fsck_t ctx, ino_t ino)
2227 {
2228         struct          problem_context pctx;
2229
2230         if (!ctx->casefolded_dirs) {
2231                 pctx.errcode = ext2fs_u32_list_create(&ctx->casefolded_dirs, 0);
2232                 if (pctx.errcode)
2233                         goto error;
2234         }
2235         pctx.errcode = ext2fs_u32_list_add(ctx->casefolded_dirs, ino);
2236         if (pctx.errcode == 0)
2237                 return;
2238 error:
2239         fix_problem(ctx, PR_1_ALLOCATE_CASEFOLDED_DIRLIST, &pctx);
2240         /* Should never get here */
2241         ctx->flags |= E2F_FLAG_ABORT;
2242 }
2243
2244 /*
2245  * This procedure will allocate the inode "bb" (badblock) map table
2246  */
2247 static void alloc_bb_map(e2fsck_t ctx)
2248 {
2249         struct          problem_context pctx;
2250
2251         clear_problem_context(&pctx);
2252         pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
2253                         _("inode in bad block map"), EXT2FS_BMAP64_RBTREE,
2254                         "inode_bb_map", &ctx->inode_bb_map);
2255         if (pctx.errcode) {
2256                 pctx.num = 4;
2257                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
2258                 /* Should never get here */
2259                 ctx->flags |= E2F_FLAG_ABORT;
2260                 return;
2261         }
2262 }
2263
2264 /*
2265  * This procedure will allocate the inode imagic table
2266  */
2267 static void alloc_imagic_map(e2fsck_t ctx)
2268 {
2269         struct          problem_context pctx;
2270
2271         clear_problem_context(&pctx);
2272         pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
2273                         _("imagic inode map"), EXT2FS_BMAP64_RBTREE,
2274                         "inode_imagic_map", &ctx->inode_imagic_map);
2275         if (pctx.errcode) {
2276                 pctx.num = 5;
2277                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
2278                 /* Should never get here */
2279                 ctx->flags |= E2F_FLAG_ABORT;
2280                 return;
2281         }
2282 }
2283
2284 /*
2285  * Marks a block as in use, setting the dup_map if it's been set
2286  * already.  Called by process_block and process_bad_block.
2287  *
2288  * WARNING: Assumes checks have already been done to make sure block
2289  * is valid.  This is true in both process_block and process_bad_block.
2290  */
2291 static _INLINE_ void mark_block_used(e2fsck_t ctx, blk64_t block)
2292 {
2293         struct          problem_context pctx;
2294
2295         clear_problem_context(&pctx);
2296
2297         if (ext2fs_fast_test_block_bitmap2(ctx->block_found_map, block)) {
2298                 if (ext2fs_has_feature_shared_blocks(ctx->fs->super) &&
2299                     !(ctx->options & E2F_OPT_UNSHARE_BLOCKS)) {
2300                         return;
2301                 }
2302                 if (!ctx->block_dup_map) {
2303                         pctx.errcode = e2fsck_allocate_block_bitmap(ctx->fs,
2304                                         _("multiply claimed block map"),
2305                                         EXT2FS_BMAP64_RBTREE, "block_dup_map",
2306                                         &ctx->block_dup_map);
2307                         if (pctx.errcode) {
2308                                 pctx.num = 3;
2309                                 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR,
2310                                             &pctx);
2311                                 /* Should never get here */
2312                                 ctx->flags |= E2F_FLAG_ABORT;
2313                                 return;
2314                         }
2315                 }
2316                 ext2fs_fast_mark_block_bitmap2(ctx->block_dup_map, block);
2317         } else {
2318                 ext2fs_fast_mark_block_bitmap2(ctx->block_found_map, block);
2319         }
2320 }
2321
2322 /*
2323  * When cluster size is greater than one block, it is caller's responsibility
2324  * to make sure block parameter starts at a cluster boundary.
2325  */
2326 static _INLINE_ void mark_blocks_used(e2fsck_t ctx, blk64_t block,
2327                                       unsigned int num)
2328 {
2329         if (ext2fs_test_block_bitmap_range2(ctx->block_found_map, block, num))
2330                 ext2fs_mark_block_bitmap_range2(ctx->block_found_map, block, num);
2331         else {
2332                 unsigned int i;
2333
2334                 for (i = 0; i < num; i += EXT2FS_CLUSTER_RATIO(ctx->fs))
2335                         mark_block_used(ctx, block + i);
2336         }
2337 }
2338
2339 /*
2340  * Adjust the extended attribute block's reference counts at the end
2341  * of pass 1, either by subtracting out references for EA blocks that
2342  * are still referenced in ctx->refcount, or by adding references for
2343  * EA blocks that had extra references as accounted for in
2344  * ctx->refcount_extra.
2345  */
2346 static void adjust_extattr_refcount(e2fsck_t ctx, ext2_refcount_t refcount,
2347                                     char *block_buf, int adjust_sign)
2348 {
2349         struct ext2_ext_attr_header     *header;
2350         struct problem_context          pctx;
2351         ext2_filsys                     fs = ctx->fs;
2352         blk64_t                         blk;
2353         __u32                           should_be;
2354         ea_value_t                      count;
2355
2356         clear_problem_context(&pctx);
2357
2358         ea_refcount_intr_begin(refcount);
2359         while (1) {
2360                 if ((blk = ea_refcount_intr_next(refcount, &count)) == 0)
2361                         break;
2362                 pctx.blk = blk;
2363                 pctx.errcode = ext2fs_read_ext_attr3(fs, blk, block_buf,
2364                                                      pctx.ino);
2365                 if (pctx.errcode) {
2366                         fix_problem(ctx, PR_1_EXTATTR_READ_ABORT, &pctx);
2367                         return;
2368                 }
2369                 header = (struct ext2_ext_attr_header *) block_buf;
2370                 pctx.blkcount = header->h_refcount;
2371                 should_be = header->h_refcount + adjust_sign * (int)count;
2372                 pctx.num = should_be;
2373                 if (fix_problem(ctx, PR_1_EXTATTR_REFCOUNT, &pctx)) {
2374                         header->h_refcount = should_be;
2375                         pctx.errcode = ext2fs_write_ext_attr3(fs, blk,
2376                                                              block_buf,
2377                                                              pctx.ino);
2378                         if (pctx.errcode) {
2379                                 fix_problem(ctx, PR_1_EXTATTR_WRITE_ABORT,
2380                                             &pctx);
2381                                 continue;
2382                         }
2383                 }
2384         }
2385 }
2386
2387 /*
2388  * Handle processing the extended attribute blocks
2389  */
2390 static int check_ext_attr(e2fsck_t ctx, struct problem_context *pctx,
2391                            char *block_buf, struct ea_quota *ea_block_quota)
2392 {
2393         ext2_filsys fs = ctx->fs;
2394         ext2_ino_t      ino = pctx->ino;
2395         struct ext2_inode *inode = pctx->inode;
2396         blk64_t         blk;
2397         char *          end;
2398         struct ext2_ext_attr_header *header;
2399         struct ext2_ext_attr_entry *first, *entry;
2400         blk64_t         quota_blocks = EXT2FS_C2B(fs, 1);
2401         __u64           quota_inodes = 0;
2402         region_t        region = 0;
2403         int             failed_csum = 0;
2404
2405         ea_block_quota->blocks = 0;
2406         ea_block_quota->inodes = 0;
2407
2408         blk = ext2fs_file_acl_block(fs, inode);
2409         if (blk == 0)
2410                 return 0;
2411
2412         /*
2413          * If the Extended attribute flag isn't set, then a non-zero
2414          * file acl means that the inode is corrupted.
2415          *
2416          * Or if the extended attribute block is an invalid block,
2417          * then the inode is also corrupted.
2418          */
2419         if (!ext2fs_has_feature_xattr(fs->super) ||
2420             (blk < fs->super->s_first_data_block) ||
2421             (blk >= ext2fs_blocks_count(fs->super))) {
2422                 mark_inode_bad(ctx, ino);
2423                 return 0;
2424         }
2425
2426         /* If ea bitmap hasn't been allocated, create it */
2427         if (!ctx->block_ea_map) {
2428                 pctx->errcode = e2fsck_allocate_block_bitmap(fs,
2429                                         _("ext attr block map"),
2430                                         EXT2FS_BMAP64_RBTREE, "block_ea_map",
2431                                         &ctx->block_ea_map);
2432                 if (pctx->errcode) {
2433                         pctx->num = 2;
2434                         fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, pctx);
2435                         ctx->flags |= E2F_FLAG_ABORT;
2436                         return 0;
2437                 }
2438         }
2439
2440         /* Create the EA refcount structure if necessary */
2441         if (!ctx->refcount) {
2442                 pctx->errcode = ea_refcount_create(0, &ctx->refcount);
2443                 if (pctx->errcode) {
2444                         pctx->num = 1;
2445                         fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
2446                         ctx->flags |= E2F_FLAG_ABORT;
2447                         return 0;
2448                 }
2449         }
2450
2451 #if 0
2452         /* Debugging text */
2453         printf("Inode %u has EA block %u\n", ino, blk);
2454 #endif
2455
2456         /* Have we seen this EA block before? */
2457         if (ext2fs_fast_test_block_bitmap2(ctx->block_ea_map, blk)) {
2458                 ea_block_quota->blocks = EXT2FS_C2B(fs, 1);
2459                 ea_block_quota->inodes = 0;
2460
2461                 if (ctx->ea_block_quota_blocks) {
2462                         ea_refcount_fetch(ctx->ea_block_quota_blocks, blk,
2463                                           &quota_blocks);
2464                         if (quota_blocks)
2465                                 ea_block_quota->blocks = quota_blocks;
2466                 }
2467
2468                 if (ctx->ea_block_quota_inodes)
2469                         ea_refcount_fetch(ctx->ea_block_quota_inodes, blk,
2470                                           &ea_block_quota->inodes);
2471
2472                 if (ea_refcount_decrement(ctx->refcount, blk, 0) == 0)
2473                         return 1;
2474                 /* Ooops, this EA was referenced more than it stated */
2475                 if (!ctx->refcount_extra) {
2476                         pctx->errcode = ea_refcount_create(0,
2477                                            &ctx->refcount_extra);
2478                         if (pctx->errcode) {
2479                                 pctx->num = 2;
2480                                 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
2481                                 ctx->flags |= E2F_FLAG_ABORT;
2482                                 return 0;
2483                         }
2484                 }
2485                 ea_refcount_increment(ctx->refcount_extra, blk, 0);
2486                 return 1;
2487         }
2488
2489         /*
2490          * OK, we haven't seen this EA block yet.  So we need to
2491          * validate it
2492          */
2493         pctx->blk = blk;
2494         pctx->errcode = ext2fs_read_ext_attr3(fs, blk, block_buf, pctx->ino);
2495         if (pctx->errcode == EXT2_ET_EXT_ATTR_CSUM_INVALID) {
2496                 pctx->errcode = 0;
2497                 failed_csum = 1;
2498         } else if (pctx->errcode == EXT2_ET_BAD_EA_HEADER)
2499                 pctx->errcode = 0;
2500
2501         if (pctx->errcode &&
2502             fix_problem(ctx, PR_1_READ_EA_BLOCK, pctx)) {
2503                 pctx->errcode = 0;
2504                 goto clear_extattr;
2505         }
2506         header = (struct ext2_ext_attr_header *) block_buf;
2507         pctx->blk = ext2fs_file_acl_block(fs, inode);
2508         if (((ctx->ext_attr_ver == 1) &&
2509              (header->h_magic != EXT2_EXT_ATTR_MAGIC_v1)) ||
2510             ((ctx->ext_attr_ver == 2) &&
2511              (header->h_magic != EXT2_EXT_ATTR_MAGIC))) {
2512                 if (fix_problem(ctx, PR_1_BAD_EA_BLOCK, pctx))
2513                         goto clear_extattr;
2514         }
2515
2516         if (header->h_blocks != 1) {
2517                 if (fix_problem(ctx, PR_1_EA_MULTI_BLOCK, pctx))
2518                         goto clear_extattr;
2519         }
2520
2521         if (pctx->errcode && fix_problem(ctx, PR_1_READ_EA_BLOCK, pctx))
2522                 goto clear_extattr;
2523
2524         region = region_create(0, fs->blocksize);
2525         if (!region) {
2526                 fix_problem(ctx, PR_1_EA_ALLOC_REGION_ABORT, pctx);
2527                 ctx->flags |= E2F_FLAG_ABORT;
2528                 return 0;
2529         }
2530         if (region_allocate(region, 0, sizeof(struct ext2_ext_attr_header))) {
2531                 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
2532                         goto clear_extattr;
2533         }
2534
2535         first = (struct ext2_ext_attr_entry *)(header+1);
2536         end = block_buf + fs->blocksize;
2537         entry = first;
2538         while ((char *)entry < end && *(__u32 *)entry) {
2539                 __u32 hash;
2540
2541                 if (region_allocate(region, (char *)entry - (char *)header,
2542                                    EXT2_EXT_ATTR_LEN(entry->e_name_len))) {
2543                         if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
2544                                 goto clear_extattr;
2545                         break;
2546                 }
2547                 if ((ctx->ext_attr_ver == 1 &&
2548                      (entry->e_name_len == 0 || entry->e_name_index != 0)) ||
2549                     (ctx->ext_attr_ver == 2 &&
2550                      entry->e_name_index == 0)) {
2551                         if (fix_problem(ctx, PR_1_EA_BAD_NAME, pctx))
2552                                 goto clear_extattr;
2553                         break;
2554                 }
2555                 if (entry->e_value_inum == 0) {
2556                         if (entry->e_value_offs + entry->e_value_size >
2557                             fs->blocksize) {
2558                                 if (fix_problem(ctx, PR_1_EA_BAD_VALUE, pctx))
2559                                         goto clear_extattr;
2560                                 break;
2561                         }
2562                         if (entry->e_value_size &&
2563                             region_allocate(region, entry->e_value_offs,
2564                                             EXT2_EXT_ATTR_SIZE(entry->e_value_size))) {
2565                                 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION,
2566                                                 pctx))
2567                                         goto clear_extattr;
2568                         }
2569
2570                         hash = ext2fs_ext_attr_hash_entry(entry, block_buf +
2571                                                           entry->e_value_offs);
2572
2573                         if (entry->e_hash != hash) {
2574                                 pctx->num = entry->e_hash;
2575                                 if (fix_problem(ctx, PR_1_ATTR_HASH, pctx))
2576                                         goto clear_extattr;
2577                                 entry->e_hash = hash;
2578                         }
2579                 } else {
2580                         problem_t problem;
2581                         blk64_t entry_quota_blocks;
2582
2583                         problem = check_large_ea_inode(ctx, entry, pctx,
2584                                                        &entry_quota_blocks);
2585                         if (problem && fix_problem(ctx, problem, pctx))
2586                                 goto clear_extattr;
2587
2588                         quota_blocks += entry_quota_blocks;
2589                         quota_inodes++;
2590                 }
2591
2592                 entry = EXT2_EXT_ATTR_NEXT(entry);
2593         }
2594         if (region_allocate(region, (char *)entry - (char *)header, 4)) {
2595                 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
2596                         goto clear_extattr;
2597         }
2598         region_free(region);
2599
2600         /*
2601          * We only get here if there was no other errors that were fixed.
2602          * If there was a checksum fail, ask to correct it.
2603          */
2604         if (failed_csum &&
2605             fix_problem(ctx, PR_1_EA_BLOCK_ONLY_CSUM_INVALID, pctx)) {
2606                 pctx->errcode = ext2fs_write_ext_attr3(fs, blk, block_buf,
2607                                                        pctx->ino);
2608                 if (pctx->errcode)
2609                         return 0;
2610         }
2611
2612         if (quota_blocks != EXT2FS_C2B(fs, 1U)) {
2613                 if (!ctx->ea_block_quota_blocks) {
2614                         pctx->errcode = ea_refcount_create(0,
2615                                                 &ctx->ea_block_quota_blocks);
2616                         if (pctx->errcode) {
2617                                 pctx->num = 3;
2618                                 goto refcount_fail;
2619                         }
2620                 }
2621                 ea_refcount_store(ctx->ea_block_quota_blocks, blk,
2622                                   quota_blocks);
2623         }
2624
2625         if (quota_inodes) {
2626                 if (!ctx->ea_block_quota_inodes) {
2627                         pctx->errcode = ea_refcount_create(0,
2628                                                 &ctx->ea_block_quota_inodes);
2629                         if (pctx->errcode) {
2630                                 pctx->num = 4;
2631 refcount_fail:
2632                                 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
2633                                 ctx->flags |= E2F_FLAG_ABORT;
2634                                 return 0;
2635                         }
2636                 }
2637
2638                 ea_refcount_store(ctx->ea_block_quota_inodes, blk,
2639                                   quota_inodes);
2640         }
2641         ea_block_quota->blocks = quota_blocks;
2642         ea_block_quota->inodes = quota_inodes;
2643
2644         inc_ea_inode_refs(ctx, pctx, first, end);
2645         ea_refcount_store(ctx->refcount, blk, header->h_refcount - 1);
2646         mark_block_used(ctx, blk);
2647         ext2fs_fast_mark_block_bitmap2(ctx->block_ea_map, blk);
2648         return 1;
2649
2650 clear_extattr:
2651         if (region)
2652                 region_free(region);
2653         ext2fs_file_acl_block_set(fs, inode, 0);
2654         e2fsck_write_inode(ctx, ino, inode, "check_ext_attr");
2655         return 0;
2656 }
2657
2658 /* Returns 1 if bad htree, 0 if OK */
2659 static int handle_htree(e2fsck_t ctx, struct problem_context *pctx,
2660                         ext2_ino_t ino, struct ext2_inode *inode,
2661                         char *block_buf)
2662 {
2663         struct ext2_dx_root_info        *root;
2664         ext2_filsys                     fs = ctx->fs;
2665         errcode_t                       retval;
2666         blk64_t                         blk;
2667
2668         if ((!LINUX_S_ISDIR(inode->i_mode) &&
2669              fix_problem(ctx, PR_1_HTREE_NODIR, pctx)) ||
2670             (!ext2fs_has_feature_dir_index(fs->super) &&
2671              fix_problem(ctx, PR_1_HTREE_SET, pctx)))
2672                 return 1;
2673
2674         pctx->errcode = ext2fs_bmap2(fs, ino, inode, 0, 0, 0, 0, &blk);
2675
2676         if ((pctx->errcode) ||
2677             (blk == 0) ||
2678             (blk < fs->super->s_first_data_block) ||
2679             (blk >= ext2fs_blocks_count(fs->super))) {
2680                 if (fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
2681                         return 1;
2682                 else
2683                         return 0;
2684         }
2685
2686         retval = io_channel_read_blk64(fs->io, blk, 1, block_buf);
2687         if (retval && fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
2688                 return 1;
2689
2690         /* XXX should check that beginning matches a directory */
2691         root = (struct ext2_dx_root_info *) (block_buf + 24);
2692
2693         if ((root->reserved_zero || root->info_length < 8) &&
2694             fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
2695                 return 1;
2696
2697         pctx->num = root->hash_version;
2698         if ((root->hash_version != EXT2_HASH_LEGACY) &&
2699             (root->hash_version != EXT2_HASH_HALF_MD4) &&
2700             (root->hash_version != EXT2_HASH_TEA) &&
2701             (root->hash_version != EXT2_HASH_SIPHASH) &&
2702             fix_problem(ctx, PR_1_HTREE_HASHV, pctx))
2703                 return 1;
2704
2705         if (ext4_hash_in_dirent(inode)) {
2706                 if (root->hash_version != EXT2_HASH_SIPHASH &&
2707                     fix_problem(ctx, PR_1_HTREE_NEEDS_SIPHASH, pctx))
2708                         return 1;
2709         } else {
2710                 if (root->hash_version == EXT2_HASH_SIPHASH &&
2711                    fix_problem(ctx, PR_1_HTREE_CANNOT_SIPHASH, pctx))
2712                         return 1;
2713         }
2714
2715         if ((root->unused_flags & EXT2_HASH_FLAG_INCOMPAT) &&
2716             fix_problem(ctx, PR_1_HTREE_INCOMPAT, pctx))
2717                 return 1;
2718
2719         pctx->num = root->indirect_levels;
2720         /* if htree level is clearly too high, consider it to be broken */
2721         if (root->indirect_levels > EXT4_HTREE_LEVEL &&
2722             fix_problem(ctx, PR_1_HTREE_DEPTH, pctx))
2723                 return 1;
2724
2725         /* if level is only maybe too high, LARGE_DIR feature could be unset */
2726         if (root->indirect_levels > ext2_dir_htree_level(fs) &&
2727             !ext2fs_has_feature_largedir(fs->super)) {
2728                 int blockbits = EXT2_BLOCK_SIZE_BITS(fs->super) + 10;
2729                 unsigned idx_pb = 1 << (blockbits - 3);
2730
2731                 /* compare inode size/blocks vs. max-sized 2-level htree */
2732                 if (EXT2_I_SIZE(pctx->inode) <
2733                     (idx_pb - 1) * (idx_pb - 2) << blockbits &&
2734                     pctx->inode->i_blocks <
2735                     (idx_pb - 1) * (idx_pb - 2) << (blockbits - 9) &&
2736                     fix_problem(ctx, PR_1_HTREE_DEPTH, pctx))
2737                         return 1;
2738         }
2739
2740         if (root->indirect_levels > EXT4_HTREE_LEVEL_COMPAT ||
2741             ext2fs_needs_large_file_feature(EXT2_I_SIZE(inode)))
2742                 ctx->large_dirs++;
2743
2744         return 0;
2745 }
2746
2747 void e2fsck_clear_inode(e2fsck_t ctx, ext2_ino_t ino,
2748                         struct ext2_inode *inode, int restart_flag,
2749                         const char *source)
2750 {
2751         inode->i_flags = 0;
2752         inode->i_links_count = 0;
2753         ext2fs_icount_store(ctx->inode_link_info, ino, 0);
2754         inode->i_dtime = ctx->now;
2755
2756         /*
2757          * If a special inode has such rotten block mappings that we
2758          * want to clear the whole inode, be sure to actually zap
2759          * the block maps because i_links_count isn't checked for
2760          * special inodes, and we'll end up right back here the next
2761          * time we run fsck.
2762          */
2763         if (ino < EXT2_FIRST_INODE(ctx->fs->super))
2764                 memset(inode->i_block, 0, sizeof(inode->i_block));
2765
2766         ext2fs_unmark_inode_bitmap2(ctx->inode_dir_map, ino);
2767         ext2fs_unmark_inode_bitmap2(ctx->inode_used_map, ino);
2768         if (ctx->inode_reg_map)
2769                 ext2fs_unmark_inode_bitmap2(ctx->inode_reg_map, ino);
2770         if (ctx->inode_bad_map)
2771                 ext2fs_unmark_inode_bitmap2(ctx->inode_bad_map, ino);
2772
2773         /*
2774          * If the inode was partially accounted for before processing
2775          * was aborted, we need to restart the pass 1 scan.
2776          */
2777         ctx->flags |= restart_flag;
2778
2779         if (ino == EXT2_BAD_INO)
2780                 memset(inode, 0, sizeof(struct ext2_inode));
2781
2782         e2fsck_write_inode(ctx, ino, inode, source);
2783 }
2784
2785 /*
2786  * Use the multiple-blocks reclamation code to fix alignment problems in
2787  * a bigalloc filesystem.  We want a logical cluster to map to *only* one
2788  * physical cluster, and we want the block offsets within that cluster to
2789  * line up.
2790  */
2791 static int has_unaligned_cluster_map(e2fsck_t ctx,
2792                                      blk64_t last_pblk, blk64_t last_lblk,
2793                                      blk64_t pblk, blk64_t lblk)
2794 {
2795         blk64_t cluster_mask;
2796
2797         if (!ctx->fs->cluster_ratio_bits)
2798                 return 0;
2799         cluster_mask = EXT2FS_CLUSTER_MASK(ctx->fs);
2800
2801         /*
2802          * If the block in the logical cluster doesn't align with the block in
2803          * the physical cluster...
2804          */
2805         if ((lblk & cluster_mask) != (pblk & cluster_mask))
2806                 return 1;
2807
2808         /*
2809          * If we cross a physical cluster boundary within a logical cluster...
2810          */
2811         if (last_pblk && (lblk & cluster_mask) != 0 &&
2812             EXT2FS_B2C(ctx->fs, lblk) == EXT2FS_B2C(ctx->fs, last_lblk) &&
2813             EXT2FS_B2C(ctx->fs, pblk) != EXT2FS_B2C(ctx->fs, last_pblk))
2814                 return 1;
2815
2816         return 0;
2817 }
2818
2819 static void scan_extent_node(e2fsck_t ctx, struct problem_context *pctx,
2820                              struct process_block_struct *pb,
2821                              blk64_t start_block, blk64_t end_block,
2822                              blk64_t eof_block,
2823                              ext2_extent_handle_t ehandle,
2824                              int try_repairs)
2825 {
2826         struct ext2fs_extent    extent;
2827         blk64_t                 blk, last_lblk;
2828         unsigned int            i, n;
2829         int                     is_dir, is_leaf;
2830         problem_t               problem;
2831         struct ext2_extent_info info;
2832         int                     failed_csum = 0;
2833
2834         if (pctx->errcode == EXT2_ET_EXTENT_CSUM_INVALID)
2835                 failed_csum = 1;
2836
2837         pctx->errcode = ext2fs_extent_get_info(ehandle, &info);
2838         if (pctx->errcode)
2839                 return;
2840         if (!(ctx->options & E2F_OPT_FIXES_ONLY) &&
2841             !pb->eti.force_rebuild) {
2842                 struct extent_tree_level *etl;
2843
2844                 etl = pb->eti.ext_info + info.curr_level;
2845                 etl->num_extents += info.num_entries;
2846                 etl->max_extents += info.max_entries;
2847                 /*
2848                  * Implementation wart: Splitting extent blocks when appending
2849                  * will leave the old block with one free entry.  Therefore
2850                  * unless the node is totally full, pretend that a non-root
2851                  * extent block can hold one fewer entry than it actually does,
2852                  * so that we don't repeatedly rebuild the extent tree.
2853                  */
2854                 if (info.curr_level && info.num_entries < info.max_entries)
2855                         etl->max_extents--;
2856         }
2857
2858         pctx->errcode = ext2fs_extent_get(ehandle, EXT2_EXTENT_FIRST_SIB,
2859                                           &extent);
2860         while ((pctx->errcode == 0 ||
2861                 pctx->errcode == EXT2_ET_EXTENT_CSUM_INVALID) &&
2862                info.num_entries-- > 0) {
2863                 is_leaf = extent.e_flags & EXT2_EXTENT_FLAGS_LEAF;
2864                 is_dir = LINUX_S_ISDIR(pctx->inode->i_mode);
2865                 last_lblk = extent.e_lblk + extent.e_len - 1;
2866
2867                 problem = 0;
2868                 pctx->blk = extent.e_pblk;
2869                 pctx->blk2 = extent.e_lblk;
2870                 pctx->num = extent.e_len;
2871                 pctx->blkcount = extent.e_lblk + extent.e_len;
2872
2873                 if (extent.e_pblk == 0 ||
2874                     extent.e_pblk < ctx->fs->super->s_first_data_block ||
2875                     extent.e_pblk >= ext2fs_blocks_count(ctx->fs->super))
2876                         problem = PR_1_EXTENT_BAD_START_BLK;
2877                 else if (extent.e_lblk < start_block)
2878                         problem = PR_1_OUT_OF_ORDER_EXTENTS;
2879                 else if ((end_block && last_lblk > end_block) &&
2880                          !(last_lblk > eof_block &&
2881                            ((extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT) ||
2882                             (pctx->inode->i_flags & EXT4_VERITY_FL))))
2883                         problem = PR_1_EXTENT_END_OUT_OF_BOUNDS;
2884                 else if (is_leaf && extent.e_len == 0)
2885                         problem = PR_1_EXTENT_LENGTH_ZERO;
2886                 else if (is_leaf &&
2887                          (extent.e_pblk + extent.e_len) >
2888                          ext2fs_blocks_count(ctx->fs->super))
2889                         problem = PR_1_EXTENT_ENDS_BEYOND;
2890                 else if (is_leaf && is_dir && !pctx->inode->i_size_high &&
2891                          !ext2fs_has_feature_largedir(ctx->fs->super) &&
2892                          ((extent.e_lblk + extent.e_len) >
2893                           (1U << (21 - ctx->fs->super->s_log_block_size))))
2894                         problem = PR_1_TOOBIG_DIR;
2895
2896                 if (is_leaf && problem == 0 && extent.e_len > 0) {
2897 #if 0
2898                         printf("extent_region(ino=%u, expect=%llu, "
2899                                "lblk=%llu, len=%u)\n", pb->ino,
2900                                (unsigned long long) pb->next_lblock,
2901                                (unsigned long long) extent.e_lblk,
2902                                extent.e_len);
2903 #endif
2904                         if (extent.e_lblk < pb->next_lblock)
2905                                 problem = PR_1_EXTENT_COLLISION;
2906                         else if (extent.e_lblk + extent.e_len > pb->next_lblock)
2907                                 pb->next_lblock = extent.e_lblk + extent.e_len;
2908                 }
2909
2910                 /*
2911                  * Uninitialized blocks in a directory?  Clear the flag and
2912                  * we'll interpret the blocks later.
2913                  */
2914                 if (try_repairs && is_dir && problem == 0 &&
2915                     (extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT) &&
2916                     fix_problem(ctx, PR_1_UNINIT_DBLOCK, pctx)) {
2917                         extent.e_flags &= ~EXT2_EXTENT_FLAGS_UNINIT;
2918                         pb->inode_modified = 1;
2919                         pctx->errcode = ext2fs_extent_replace(ehandle, 0,
2920                                                               &extent);
2921                         if (pctx->errcode)
2922                                 return;
2923                         failed_csum = 0;
2924                 }
2925 #ifdef CONFIG_DEVELOPER_FEATURES
2926                 if (try_repairs && !is_dir && problem == 0 &&
2927                     (ctx->options & E2F_OPT_CLEAR_UNINIT) &&
2928                     (extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT) &&
2929                     fix_problem(ctx, PR_1_CLEAR_UNINIT_EXTENT, pctx)) {
2930                         extent.e_flags &= ~EXT2_EXTENT_FLAGS_UNINIT;
2931                         pb->inode_modified = 1;
2932                         pctx->errcode = ext2fs_extent_replace(ehandle, 0,
2933                                                               &extent);
2934                         if (pctx->errcode)
2935                                 return;
2936                         failed_csum = 0;
2937                 }
2938 #endif
2939                 if (try_repairs && problem) {
2940 report_problem:
2941                         if (fix_problem(ctx, problem, pctx)) {
2942                                 if (ctx->invalid_bitmaps) {
2943                                         /*
2944                                          * If fsck knows the bitmaps are bad,
2945                                          * skip to the next extent and
2946                                          * try to clear this extent again
2947                                          * after fixing the bitmaps, by
2948                                          * restarting fsck.
2949                                          */
2950                                         pctx->errcode = ext2fs_extent_get(
2951                                                           ehandle,
2952                                                           EXT2_EXTENT_NEXT_SIB,
2953                                                           &extent);
2954                                         ctx->flags |= E2F_FLAG_RESTART_LATER;
2955                                         if (pctx->errcode ==
2956                                                     EXT2_ET_NO_CURRENT_NODE) {
2957                                                 pctx->errcode = 0;
2958                                                 break;
2959                                         }
2960                                         continue;
2961                                 }
2962                                 e2fsck_read_bitmaps(ctx);
2963                                 pb->inode_modified = 1;
2964                                 pctx->errcode =
2965                                         ext2fs_extent_delete(ehandle, 0);
2966                                 if (pctx->errcode) {
2967                                         pctx->str = "ext2fs_extent_delete";
2968                                         return;
2969                                 }
2970                                 pctx->errcode = ext2fs_extent_fix_parents(ehandle);
2971                                 if (pctx->errcode &&
2972                                     pctx->errcode != EXT2_ET_NO_CURRENT_NODE) {
2973                                         pctx->str = "ext2fs_extent_fix_parents";
2974                                         return;
2975                                 }
2976                                 pctx->errcode = ext2fs_extent_get(ehandle,
2977                                                                   EXT2_EXTENT_CURRENT,
2978                                                                   &extent);
2979                                 if (pctx->errcode == EXT2_ET_NO_CURRENT_NODE) {
2980                                         pctx->errcode = 0;
2981                                         break;
2982                                 }
2983                                 failed_csum = 0;
2984                                 continue;
2985                         }
2986                         goto next;
2987                 }
2988
2989                 if (!is_leaf) {
2990                         blk64_t lblk = extent.e_lblk;
2991                         int next_try_repairs = 1;
2992
2993                         blk = extent.e_pblk;
2994
2995                         /*
2996                          * If this lower extent block collides with critical
2997                          * metadata, don't try to repair the damage.  Pass 1b
2998                          * will reallocate the block; then we can try again.
2999                          */
3000                         if (pb->ino != EXT2_RESIZE_INO &&
3001                             extent.e_pblk < ctx->fs->super->s_blocks_count &&
3002                             ext2fs_test_block_bitmap2(ctx->block_metadata_map,
3003                                                       extent.e_pblk)) {
3004                                 next_try_repairs = 0;
3005                                 pctx->blk = blk;
3006                                 fix_problem(ctx,
3007                                             PR_1_CRITICAL_METADATA_COLLISION,
3008                                             pctx);
3009                                 if ((ctx->options & E2F_OPT_NO) == 0)
3010                                         ctx->flags |= E2F_FLAG_RESTART_LATER;
3011                         }
3012                         pctx->errcode = ext2fs_extent_get(ehandle,
3013                                                   EXT2_EXTENT_DOWN, &extent);
3014                         if (pctx->errcode &&
3015                             pctx->errcode != EXT2_ET_EXTENT_CSUM_INVALID) {
3016                                 pctx->str = "EXT2_EXTENT_DOWN";
3017                                 problem = PR_1_EXTENT_HEADER_INVALID;
3018                                 if (!next_try_repairs)
3019                                         return;
3020                                 if (pctx->errcode == EXT2_ET_EXTENT_HEADER_BAD)
3021                                         goto report_problem;
3022                                 return;
3023                         }
3024                         /* The next extent should match this index's logical start */
3025                         if (extent.e_lblk != lblk) {
3026                                 struct ext2_extent_info e_info;
3027
3028                                 pctx->errcode = ext2fs_extent_get_info(ehandle,
3029                                                                        &e_info);
3030                                 if (pctx->errcode) {
3031                                         pctx->str = "ext2fs_extent_get_info";
3032                                         return;
3033                                 }
3034                                 pctx->blk = lblk;
3035                                 pctx->blk2 = extent.e_lblk;
3036                                 pctx->num = e_info.curr_level - 1;
3037                                 problem = PR_1_EXTENT_INDEX_START_INVALID;
3038                                 if (fix_problem(ctx, problem, pctx)) {
3039                                         pb->inode_modified = 1;
3040                                         pctx->errcode =
3041                                                 ext2fs_extent_fix_parents(ehandle);
3042                                         if (pctx->errcode) {
3043                                                 pctx->str = "ext2fs_extent_fix_parents";
3044                                                 return;
3045                                         }
3046                                 }
3047                         }
3048                         scan_extent_node(ctx, pctx, pb, extent.e_lblk,
3049                                          last_lblk, eof_block, ehandle,
3050                                          next_try_repairs);
3051                         if (pctx->errcode)
3052                                 return;
3053                         pctx->errcode = ext2fs_extent_get(ehandle,
3054                                                   EXT2_EXTENT_UP, &extent);
3055                         if (pctx->errcode) {
3056                                 pctx->str = "EXT2_EXTENT_UP";
3057                                 return;
3058                         }
3059                         mark_block_used(ctx, blk);
3060                         pb->num_blocks++;
3061                         goto next;
3062                 }
3063
3064                 if ((pb->previous_block != 0) &&
3065                     (pb->previous_block+1 != extent.e_pblk)) {
3066                         if (ctx->options & E2F_OPT_FRAGCHECK) {
3067                                 char type = '?';
3068
3069                                 if (pb->is_dir)
3070                                         type = 'd';
3071                                 else if (pb->is_reg)
3072                                         type = 'f';
3073
3074                                 printf(("%6lu(%c): expecting %6lu "
3075                                         "actual extent "
3076                                         "phys %6lu log %lu len %lu\n"),
3077                                        (unsigned long) pctx->ino, type,
3078                                        (unsigned long) pb->previous_block+1,
3079                                        (unsigned long) extent.e_pblk,
3080                                        (unsigned long) extent.e_lblk,
3081                                        (unsigned long) extent.e_len);
3082                         }
3083                         pb->fragmented = 1;
3084                 }
3085                 /*
3086                  * If we notice a gap in the logical block mappings of an
3087                  * extent-mapped directory, offer to close the hole by
3088                  * moving the logical block down, otherwise we'll go mad in
3089                  * pass 3 allocating empty directory blocks to fill the hole.
3090                  */
3091                 if (try_repairs && is_dir &&
3092                     pb->last_block + 1 < extent.e_lblk) {
3093                         blk64_t new_lblk;
3094
3095                         new_lblk = pb->last_block + 1;
3096                         if (EXT2FS_CLUSTER_RATIO(ctx->fs) > 1)
3097                                 new_lblk = ((new_lblk +
3098                                              EXT2FS_CLUSTER_RATIO(ctx->fs) - 1) &
3099                                             ~EXT2FS_CLUSTER_MASK(ctx->fs)) |
3100                                            (extent.e_pblk &
3101                                             EXT2FS_CLUSTER_MASK(ctx->fs));
3102                         pctx->blk = extent.e_lblk;
3103                         pctx->blk2 = new_lblk;
3104                         if (fix_problem(ctx, PR_1_COLLAPSE_DBLOCK, pctx)) {
3105                                 extent.e_lblk = new_lblk;
3106                                 pb->inode_modified = 1;
3107                                 pctx->errcode = ext2fs_extent_replace(ehandle,
3108                                                                 0, &extent);
3109                                 if (pctx->errcode) {
3110                                         pctx->errcode = 0;
3111                                         goto alloc_later;
3112                                 }
3113                                 pctx->errcode = ext2fs_extent_fix_parents(ehandle);
3114                                 if (pctx->errcode)
3115                                         goto failed_add_dir_block;
3116                                 pctx->errcode = ext2fs_extent_goto(ehandle,
3117                                                                 extent.e_lblk);
3118                                 if (pctx->errcode)
3119                                         goto failed_add_dir_block;
3120                                 last_lblk = extent.e_lblk + extent.e_len - 1;
3121                                 failed_csum = 0;
3122                         }
3123                 }
3124 alloc_later:
3125                 if (is_dir) {
3126                         while (++pb->last_db_block <
3127                                (e2_blkcnt_t) extent.e_lblk) {
3128                                 pctx->errcode = ext2fs_add_dir_block2(
3129                                                         ctx->fs->dblist,
3130                                                         pb->ino, 0,
3131                                                         pb->last_db_block);
3132                                 if (pctx->errcode) {
3133                                         pctx->blk = 0;
3134                                         pctx->num = pb->last_db_block;
3135                                         goto failed_add_dir_block;
3136                                 }
3137                         }
3138
3139                         for (i = 0; i < extent.e_len; i++) {
3140                                 pctx->errcode = ext2fs_add_dir_block2(
3141                                                         ctx->fs->dblist,
3142                                                         pctx->ino,
3143                                                         extent.e_pblk + i,
3144                                                         extent.e_lblk + i);
3145                                 if (pctx->errcode) {
3146                                         pctx->blk = extent.e_pblk + i;
3147                                         pctx->num = extent.e_lblk + i;
3148                                 failed_add_dir_block:
3149                                         fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
3150                                         /* Should never get here */
3151                                         ctx->flags |= E2F_FLAG_ABORT;
3152                                         return;
3153                                 }
3154                         }
3155                         if (extent.e_len > 0)
3156                                 pb->last_db_block = extent.e_lblk + extent.e_len - 1;
3157                 }
3158                 if (has_unaligned_cluster_map(ctx, pb->previous_block,
3159                                               pb->last_block,
3160                                               extent.e_pblk,
3161                                               extent.e_lblk)) {
3162                         for (i = 0; i < extent.e_len; i++) {
3163                                 pctx->blk = extent.e_lblk + i;
3164                                 pctx->blk2 = extent.e_pblk + i;
3165                                 fix_problem(ctx, PR_1_MISALIGNED_CLUSTER, pctx);
3166                                 mark_block_used(ctx, extent.e_pblk + i);
3167                                 mark_block_used(ctx, extent.e_pblk + i);
3168                         }
3169                 }
3170
3171                 /*
3172                  * Check whether first cluster got marked in previous iteration.
3173                  */
3174                 if (ctx->fs->cluster_ratio_bits &&
3175                     pb->previous_block &&
3176                     (EXT2FS_B2C(ctx->fs, extent.e_pblk) ==
3177                      EXT2FS_B2C(ctx->fs, pb->previous_block)))
3178                         /* Set blk to the beginning of next cluster. */
3179                         blk = EXT2FS_C2B(
3180                                 ctx->fs,
3181                                 EXT2FS_B2C(ctx->fs, extent.e_pblk) + 1);
3182                 else
3183                         /* Set blk to the beginning of current cluster. */
3184                         blk = EXT2FS_C2B(ctx->fs,
3185                                          EXT2FS_B2C(ctx->fs, extent.e_pblk));
3186
3187                 if (blk < extent.e_pblk + extent.e_len) {
3188                         mark_blocks_used(ctx, blk,
3189                                          extent.e_pblk + extent.e_len - blk);
3190                         n = DIV_ROUND_UP(extent.e_pblk + extent.e_len - blk,
3191                                          EXT2FS_CLUSTER_RATIO(ctx->fs));
3192                         pb->num_blocks += n;
3193                 }
3194                 pb->last_block = extent.e_lblk + extent.e_len - 1;
3195                 pb->previous_block = extent.e_pblk + extent.e_len - 1;
3196                 start_block = pb->last_block = last_lblk;
3197                 if (is_leaf && !is_dir &&
3198                     !(extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT))
3199                         pb->last_init_lblock = last_lblk;
3200         next:
3201                 pctx->errcode = ext2fs_extent_get(ehandle,
3202                                                   EXT2_EXTENT_NEXT_SIB,
3203                                                   &extent);
3204         }
3205
3206         /* Failed csum but passes checks?  Ask to fix checksum. */
3207         if (failed_csum &&
3208             fix_problem(ctx, PR_1_EXTENT_ONLY_CSUM_INVALID, pctx)) {
3209                 pb->inode_modified = 1;
3210                 pctx->errcode = ext2fs_extent_replace(ehandle, 0, &extent);
3211                 if (pctx->errcode)
3212                         return;
3213         }
3214
3215         if (pctx->errcode == EXT2_ET_EXTENT_NO_NEXT)
3216                 pctx->errcode = 0;
3217 }
3218
3219 static void check_blocks_extents(e2fsck_t ctx, struct problem_context *pctx,
3220                                  struct process_block_struct *pb)
3221 {
3222         struct ext2_extent_info info;
3223         struct ext2_inode       *inode = pctx->inode;
3224         ext2_extent_handle_t    ehandle;
3225         ext2_filsys             fs = ctx->fs;
3226         ext2_ino_t              ino = pctx->ino;
3227         errcode_t               retval;
3228         blk64_t                 eof_lblk;
3229         struct ext3_extent_header       *eh;
3230
3231         /* Check for a proper extent header... */
3232         eh = (struct ext3_extent_header *) &inode->i_block[0];
3233         retval = ext2fs_extent_header_verify(eh, sizeof(inode->i_block));
3234         if (retval) {
3235                 if (fix_problem(ctx, PR_1_MISSING_EXTENT_HEADER, pctx))
3236                         e2fsck_clear_inode(ctx, ino, inode, 0,
3237                                            "check_blocks_extents");
3238                 pctx->errcode = 0;
3239                 return;
3240         }
3241
3242         /* ...since this function doesn't fail if i_block is zeroed. */
3243         pctx->errcode = ext2fs_extent_open2(fs, ino, inode, &ehandle);
3244         if (pctx->errcode) {
3245                 if (fix_problem(ctx, PR_1_READ_EXTENT, pctx))
3246                         e2fsck_clear_inode(ctx, ino, inode, 0,
3247                                            "check_blocks_extents");
3248                 pctx->errcode = 0;
3249                 return;
3250         }
3251
3252         retval = ext2fs_extent_get_info(ehandle, &info);
3253         if (retval == 0) {
3254                 int max_depth = info.max_depth;
3255
3256                 if (max_depth >= MAX_EXTENT_DEPTH_COUNT)
3257                         max_depth = MAX_EXTENT_DEPTH_COUNT-1;
3258                 ctx->extent_depth_count[max_depth]++;
3259         }
3260
3261         /* Check maximum extent depth */
3262         pctx->blk = info.max_depth;
3263         pctx->blk2 = ext2fs_max_extent_depth(ehandle);
3264         if (pctx->blk2 < pctx->blk &&
3265             fix_problem(ctx, PR_1_EXTENT_BAD_MAX_DEPTH, pctx))
3266                 pb->eti.force_rebuild = 1;
3267
3268         /* Can we collect extent tree level stats? */
3269         pctx->blk = MAX_EXTENT_DEPTH_COUNT;
3270         if (pctx->blk2 > pctx->blk)
3271                 fix_problem(ctx, PR_1E_MAX_EXTENT_TREE_DEPTH, pctx);
3272         memset(pb->eti.ext_info, 0, sizeof(pb->eti.ext_info));
3273         pb->eti.ino = pb->ino;
3274
3275         pb->next_lblock = 0;
3276
3277         eof_lblk = ((EXT2_I_SIZE(inode) + fs->blocksize - 1) >>
3278                 EXT2_BLOCK_SIZE_BITS(fs->super)) - 1;
3279         scan_extent_node(ctx, pctx, pb, 0, 0, eof_lblk, ehandle, 1);
3280         if (pctx->errcode &&
3281             fix_problem(ctx, PR_1_EXTENT_ITERATE_FAILURE, pctx)) {
3282                 pb->num_blocks = 0;
3283                 inode->i_blocks = 0;
3284                 e2fsck_clear_inode(ctx, ino, inode, E2F_FLAG_RESTART,
3285                                    "check_blocks_extents");
3286                 pctx->errcode = 0;
3287         }
3288         ext2fs_extent_free(ehandle);
3289
3290         /* Rebuild unless it's a dir and we're rehashing it */
3291         if (LINUX_S_ISDIR(inode->i_mode) &&
3292             e2fsck_dir_will_be_rehashed(ctx, ino))
3293                 return;
3294
3295         if (ctx->options & E2F_OPT_CONVERT_BMAP)
3296                 e2fsck_rebuild_extents_later(ctx, ino);
3297         else
3298                 e2fsck_should_rebuild_extents(ctx, pctx, &pb->eti, &info);
3299 }
3300
3301 /*
3302  * In fact we don't need to check blocks for an inode with inline data
3303  * because this inode doesn't have any blocks.  In this function all
3304  * we need to do is add this inode into dblist when it is a directory.
3305  */
3306 static void check_blocks_inline_data(e2fsck_t ctx, struct problem_context *pctx,
3307                                      struct process_block_struct *pb)
3308 {
3309         int     flags;
3310         size_t  inline_data_size = 0;
3311
3312         if (!pb->is_dir) {
3313                 pctx->errcode = 0;
3314                 return;
3315         }
3316
3317         /* Process the dirents in i_block[] as the "first" block. */
3318         pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist, pb->ino, 0, 0);
3319         if (pctx->errcode)
3320                 goto err;
3321
3322         /* Process the dirents in the EA as a "second" block. */
3323         flags = ctx->fs->flags;
3324         ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3325         pctx->errcode = ext2fs_inline_data_size(ctx->fs, pb->ino,
3326                                                 &inline_data_size);
3327         ctx->fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
3328                          (ctx->fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
3329         if (pctx->errcode) {
3330                 pctx->errcode = 0;
3331                 return;
3332         }
3333
3334         if (inline_data_size <= EXT4_MIN_INLINE_DATA_SIZE)
3335                 return;
3336
3337         pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist, pb->ino, 0, 1);
3338         if (pctx->errcode)
3339                 goto err;
3340
3341         return;
3342 err:
3343         pctx->blk = 0;
3344         pctx->num = 0;
3345         fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
3346         ctx->flags |= E2F_FLAG_ABORT;
3347 }
3348
3349 /*
3350  * This subroutine is called on each inode to account for all of the
3351  * blocks used by that inode.
3352  */
3353 static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
3354                          char *block_buf, const struct ea_quota *ea_ibody_quota)
3355 {
3356         ext2_filsys fs = ctx->fs;
3357         struct process_block_struct pb;
3358         ext2_ino_t      ino = pctx->ino;
3359         struct ext2_inode *inode = pctx->inode;
3360         unsigned        bad_size = 0;
3361         int             dirty_inode = 0;
3362         int             extent_fs;
3363         int             inlinedata_fs;
3364         __u64           size;
3365         struct ea_quota ea_block_quota;
3366
3367         pb.ino = ino;
3368         pb.num_blocks = EXT2FS_B2C(ctx->fs,
3369                                    ea_ibody_quota ? ea_ibody_quota->blocks : 0);
3370         pb.last_block = ~0;
3371         pb.last_init_lblock = -1;
3372         pb.last_db_block = -1;
3373         pb.num_illegal_blocks = 0;
3374         pb.suppress = 0; pb.clear = 0;
3375         pb.fragmented = 0;
3376         pb.compressed = 0;
3377         pb.previous_block = 0;
3378         pb.is_dir = LINUX_S_ISDIR(inode->i_mode);
3379         pb.is_reg = LINUX_S_ISREG(inode->i_mode);
3380         pb.max_blocks = 1U << (31 - fs->super->s_log_block_size);
3381         pb.inode = inode;
3382         pb.pctx = pctx;
3383         pb.ctx = ctx;
3384         pb.inode_modified = 0;
3385         pb.eti.force_rebuild = 0;
3386         pctx->ino = ino;
3387         pctx->errcode = 0;
3388
3389         extent_fs = ext2fs_has_feature_extents(ctx->fs->super);
3390         inlinedata_fs = ext2fs_has_feature_inline_data(ctx->fs->super);
3391
3392         if (check_ext_attr(ctx, pctx, block_buf, &ea_block_quota)) {
3393                 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
3394                         goto out;
3395                 pb.num_blocks += EXT2FS_B2C(ctx->fs, ea_block_quota.blocks);
3396         }
3397
3398         if (inlinedata_fs && (inode->i_flags & EXT4_INLINE_DATA_FL))
3399                 check_blocks_inline_data(ctx, pctx, &pb);
3400         else if (ext2fs_inode_has_valid_blocks2(fs, inode)) {
3401                 if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL))
3402                         check_blocks_extents(ctx, pctx, &pb);
3403                 else {
3404                         int flags;
3405                         /*
3406                          * If we've modified the inode, write it out before
3407                          * iterate() tries to use it.
3408                          */
3409                         if (dirty_inode) {
3410                                 e2fsck_write_inode(ctx, ino, inode,
3411                                                    "check_blocks");
3412                                 dirty_inode = 0;
3413                         }
3414                         flags = fs->flags;
3415                         fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3416                         pctx->errcode = ext2fs_block_iterate3(fs, ino,
3417                                                 pb.is_dir ? BLOCK_FLAG_HOLE : 0,
3418                                                 block_buf, process_block, &pb);
3419                         /*
3420                          * We do not have uninitialized extents in non extent
3421                          * files.
3422                          */
3423                         pb.last_init_lblock = pb.last_block;
3424                         /*
3425                          * If iterate() changed a block mapping, we have to
3426                          * re-read the inode.  If we decide to clear the
3427                          * inode after clearing some stuff, we'll re-write the
3428                          * bad mappings into the inode!
3429                          */
3430                         if (pb.inode_modified)
3431                                 e2fsck_read_inode(ctx, ino, inode,
3432                                                   "check_blocks");
3433                         fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
3434                                     (fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
3435
3436                         if (ctx->options & E2F_OPT_CONVERT_BMAP) {
3437 #ifdef DEBUG
3438                                 printf("bmap rebuild ino=%d\n", ino);
3439 #endif
3440                                 if (!LINUX_S_ISDIR(inode->i_mode) ||
3441                                     !e2fsck_dir_will_be_rehashed(ctx, ino))
3442                                         e2fsck_rebuild_extents_later(ctx, ino);
3443                         }
3444                 }
3445         }
3446         end_problem_latch(ctx, PR_LATCH_BLOCK);
3447         end_problem_latch(ctx, PR_LATCH_TOOBIG);
3448         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
3449                 goto out;
3450         if (pctx->errcode)
3451                 fix_problem(ctx, PR_1_BLOCK_ITERATE, pctx);
3452
3453         if (pb.fragmented && pb.num_blocks < fs->super->s_blocks_per_group) {
3454                 if (LINUX_S_ISDIR(inode->i_mode))
3455                         ctx->fs_fragmented_dir++;
3456                 else
3457                         ctx->fs_fragmented++;
3458         }
3459
3460         if (pb.clear) {
3461                 e2fsck_clear_inode(ctx, ino, inode, E2F_FLAG_RESTART,
3462                                    "check_blocks");
3463                 return;
3464         }
3465
3466         if (inode->i_flags & EXT2_INDEX_FL) {
3467                 if (handle_htree(ctx, pctx, ino, inode, block_buf)) {
3468                         inode->i_flags &= ~EXT2_INDEX_FL;
3469                         dirty_inode++;
3470                 } else {
3471                         e2fsck_add_dx_dir(ctx, ino, inode, pb.last_block+1);
3472                 }
3473         }
3474
3475         if (!pb.num_blocks && pb.is_dir &&
3476             !(inode->i_flags & EXT4_INLINE_DATA_FL)) {
3477                 if (fix_problem(ctx, PR_1_ZERO_LENGTH_DIR, pctx)) {
3478                         e2fsck_clear_inode(ctx, ino, inode, 0, "check_blocks");
3479                         ctx->fs_directory_count--;
3480                         return;
3481                 }
3482         }
3483
3484         if (ino != quota_type2inum(PRJQUOTA, fs->super) &&
3485             (ino == EXT2_ROOT_INO || ino >= EXT2_FIRST_INODE(ctx->fs->super)) &&
3486             !(inode->i_flags & EXT4_EA_INODE_FL)) {
3487                 quota_data_add(ctx->qctx, (struct ext2_inode_large *) inode,
3488                                ino,
3489                                pb.num_blocks * EXT2_CLUSTER_SIZE(fs->super));
3490                 quota_data_inodes(ctx->qctx, (struct ext2_inode_large *) inode,
3491                                   ino, (ea_ibody_quota ?
3492                                         ea_ibody_quota->inodes : 0) +
3493                                                 ea_block_quota.inodes + 1);
3494         }
3495
3496         if (!ext2fs_has_feature_huge_file(fs->super) ||
3497             !(inode->i_flags & EXT4_HUGE_FILE_FL))
3498                 pb.num_blocks *= (fs->blocksize / 512);
3499         pb.num_blocks *= EXT2FS_CLUSTER_RATIO(fs);
3500 #if 0
3501         printf("inode %u, i_size = %u, last_block = %llu, i_blocks=%llu, num_blocks = %llu\n",
3502                ino, inode->i_size, (unsigned long long) pb.last_block,
3503                (unsigned long long) ext2fs_inode_i_blocks(fs, inode),
3504                (unsigned long long) pb.num_blocks);
3505 #endif
3506         size = EXT2_I_SIZE(inode);
3507         if (pb.is_dir) {
3508                 unsigned nblock = size >> EXT2_BLOCK_SIZE_BITS(fs->super);
3509                 if (inode->i_flags & EXT4_INLINE_DATA_FL) {
3510                         int flags;
3511                         size_t sz = 0;
3512                         errcode_t err;
3513
3514                         flags = ctx->fs->flags;
3515                         ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3516                         err = ext2fs_inline_data_size(ctx->fs, pctx->ino,
3517                                                       &sz);
3518                         ctx->fs->flags = (flags &
3519                                           EXT2_FLAG_IGNORE_CSUM_ERRORS) |
3520                                          (ctx->fs->flags &
3521                                           ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
3522                         if (err || sz != size) {
3523                                 bad_size = 7;
3524                                 pctx->num = sz;
3525                         }
3526                 } else if (size & (fs->blocksize - 1))
3527                         bad_size = 5;
3528                 else if (nblock > (pb.last_block + 1))
3529                         bad_size = 1;
3530                 else if (nblock < (pb.last_block + 1)) {
3531                         if (((pb.last_block + 1) - nblock) >
3532                             fs->super->s_prealloc_dir_blocks)
3533                                 bad_size = 2;
3534                 }
3535         } else {
3536                 if ((pb.last_init_lblock >= 0) &&
3537                     /* Do not allow initialized allocated blocks past i_size*/
3538                     (size < (__u64)pb.last_init_lblock * fs->blocksize) &&
3539                     !(inode->i_flags & EXT4_VERITY_FL))
3540                         bad_size = 3;
3541                 else if (!(extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) &&
3542                          size > ext2_max_sizes[fs->super->s_log_block_size])
3543                         /* too big for a direct/indirect-mapped file */
3544                         bad_size = 4;
3545                 else if ((extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) &&
3546                          size >
3547                          ((1ULL << (32 + EXT2_BLOCK_SIZE_BITS(fs->super))) - 1))
3548                         /* too big for an extent-based file - 32bit ee_block */
3549                         bad_size = 6;
3550         }
3551         /* i_size for symlinks is checked elsewhere */
3552         if (bad_size && !LINUX_S_ISLNK(inode->i_mode)) {
3553                 /* Did inline_data set pctx->num earlier? */
3554                 if (bad_size != 7)
3555                         pctx->num = (pb.last_block + 1) * fs->blocksize;
3556                 pctx->group = bad_size;
3557                 if (fix_problem(ctx, PR_1_BAD_I_SIZE, pctx)) {
3558                         ext2fs_inode_size_set(fs, inode, pctx->num);
3559                         if (EXT2_I_SIZE(inode) == 0 &&
3560                             (inode->i_flags & EXT4_INLINE_DATA_FL)) {
3561                                 memset(inode->i_block, 0,
3562                                        sizeof(inode->i_block));
3563                                 inode->i_flags &= ~EXT4_INLINE_DATA_FL;
3564                         }
3565                         dirty_inode++;
3566                 }
3567                 pctx->num = 0;
3568         }
3569         if (LINUX_S_ISREG(inode->i_mode) &&
3570             ext2fs_needs_large_file_feature(EXT2_I_SIZE(inode)))
3571                 ctx->large_files++;
3572         if ((fs->super->s_creator_os != EXT2_OS_HURD) &&
3573             ((pb.num_blocks != ext2fs_inode_i_blocks(fs, inode)) ||
3574              (ext2fs_has_feature_huge_file(fs->super) &&
3575               (inode->i_flags & EXT4_HUGE_FILE_FL) &&
3576               (inode->osd2.linux2.l_i_blocks_hi != 0)))) {
3577                 pctx->num = pb.num_blocks;
3578                 if (fix_problem(ctx, PR_1_BAD_I_BLOCKS, pctx)) {
3579                         inode->i_blocks = pb.num_blocks;
3580                         inode->osd2.linux2.l_i_blocks_hi = pb.num_blocks >> 32;
3581                         dirty_inode++;
3582                 }
3583                 pctx->num = 0;
3584         }
3585
3586         /*
3587          * The kernel gets mad if we ask it to allocate bigalloc clusters to
3588          * a block mapped file, so rebuild it as an extent file.  We can skip
3589          * symlinks because they're never rewritten.
3590          */
3591         if (ext2fs_has_feature_bigalloc(fs->super) &&
3592             (LINUX_S_ISREG(inode->i_mode) || LINUX_S_ISDIR(inode->i_mode)) &&
3593             ext2fs_inode_data_blocks2(fs, inode) > 0 &&
3594             (ino == EXT2_ROOT_INO || ino >= EXT2_FIRST_INO(fs->super)) &&
3595             !(inode->i_flags & (EXT4_EXTENTS_FL | EXT4_INLINE_DATA_FL)) &&
3596             fix_problem(ctx, PR_1_NO_BIGALLOC_BLOCKMAP_FILES, pctx)) {
3597                 pctx->errcode = e2fsck_rebuild_extents_later(ctx, ino);
3598                 if (pctx->errcode)
3599                         goto out;
3600         }
3601
3602         if (ctx->dirs_to_hash && pb.is_dir &&
3603             !(ctx->lost_and_found && ctx->lost_and_found == ino) &&
3604             !(inode->i_flags & EXT2_INDEX_FL) &&
3605             ((inode->i_size / fs->blocksize) >= 3))
3606                 e2fsck_rehash_dir_later(ctx, ino);
3607
3608 out:
3609         if (dirty_inode)
3610                 e2fsck_write_inode(ctx, ino, inode, "check_blocks");
3611 }
3612
3613 #if 0
3614 /*
3615  * Helper function called by process block when an illegal block is
3616  * found.  It returns a description about why the block is illegal
3617  */
3618 static char *describe_illegal_block(ext2_filsys fs, blk64_t block)
3619 {
3620         blk64_t super;
3621         int     i;
3622         static char     problem[80];
3623
3624         super = fs->super->s_first_data_block;
3625         strcpy(problem, "PROGRAMMING ERROR: Unknown reason for illegal block");
3626         if (block < super) {
3627                 sprintf(problem, "< FIRSTBLOCK (%u)", super);
3628                 return(problem);
3629         } else if (block >= ext2fs_blocks_count(fs->super)) {
3630                 sprintf(problem, "> BLOCKS (%u)", ext2fs_blocks_count(fs->super));
3631                 return(problem);
3632         }
3633         for (i = 0; i < fs->group_desc_count; i++) {
3634                 if (block == super) {
3635                         sprintf(problem, "is the superblock in group %d", i);
3636                         break;
3637                 }
3638                 if (block > super &&
3639                     block <= (super + fs->desc_blocks)) {
3640                         sprintf(problem, "is in the group descriptors "
3641                                 "of group %d", i);
3642                         break;
3643                 }
3644                 if (block == ext2fs_block_bitmap_loc(fs, i)) {
3645                         sprintf(problem, "is the block bitmap of group %d", i);
3646                         break;
3647                 }
3648                 if (block == ext2fs_inode_bitmap_loc(fs, i)) {
3649                         sprintf(problem, "is the inode bitmap of group %d", i);
3650                         break;
3651                 }
3652                 if (block >= ext2fs_inode_table_loc(fs, i) &&
3653                     (block < ext2fs_inode_table_loc(fs, i)
3654                      + fs->inode_blocks_per_group)) {
3655                         sprintf(problem, "is in the inode table of group %d",
3656                                 i);
3657                         break;
3658                 }
3659                 super += fs->super->s_blocks_per_group;
3660         }
3661         return(problem);
3662 }
3663 #endif
3664
3665 /*
3666  * This is a helper function for check_blocks().
3667  */
3668 static int process_block(ext2_filsys fs,
3669                   blk64_t       *block_nr,
3670                   e2_blkcnt_t blockcnt,
3671                   blk64_t ref_block EXT2FS_ATTR((unused)),
3672                   int ref_offset EXT2FS_ATTR((unused)),
3673                   void *priv_data)
3674 {
3675         struct process_block_struct *p;
3676         struct problem_context *pctx;
3677         blk64_t blk = *block_nr;
3678         int     ret_code = 0;
3679         problem_t       problem = 0;
3680         e2fsck_t        ctx;
3681
3682         p = (struct process_block_struct *) priv_data;
3683         pctx = p->pctx;
3684         ctx = p->ctx;
3685
3686         /*
3687          * For a directory, add logical block zero for processing even if it's
3688          * not mapped or we'll be perennially stuck with broken "." and ".."
3689          * entries.
3690          */
3691         if (p->is_dir && blockcnt == 0 && blk == 0) {
3692                 pctx->errcode = ext2fs_add_dir_block2(fs->dblist, p->ino, 0, 0);
3693                 if (pctx->errcode) {
3694                         pctx->blk = blk;
3695                         pctx->num = blockcnt;
3696                         goto failed_add_dir_block;
3697                 }
3698                 p->last_db_block++;
3699         }
3700
3701         if (blk == 0)
3702                 return 0;
3703
3704 #if 0
3705         printf("Process_block, inode %lu, block %u, #%d\n", p->ino, blk,
3706                blockcnt);
3707 #endif
3708
3709         /*
3710          * Simplistic fragmentation check.  We merely require that the
3711          * file be contiguous.  (Which can never be true for really
3712          * big files that are greater than a block group.)
3713          */
3714         if (p->previous_block && p->ino != EXT2_RESIZE_INO) {
3715                 if (p->previous_block+1 != blk) {
3716                         if (ctx->options & E2F_OPT_FRAGCHECK) {
3717                                 char type = '?';
3718
3719                                 if (p->is_dir)
3720                                         type = 'd';
3721                                 else if (p->is_reg)
3722                                         type = 'f';
3723
3724                                 printf(_("%6lu(%c): expecting %6lu "
3725                                          "got phys %6lu (blkcnt %lld)\n"),
3726                                        (unsigned long) pctx->ino, type,
3727                                        (unsigned long) p->previous_block+1,
3728                                        (unsigned long) blk,
3729                                        (long long) blockcnt);
3730                         }
3731                         p->fragmented = 1;
3732                 }
3733         }
3734
3735         if (p->is_dir && !ext2fs_has_feature_largedir(fs->super) &&
3736             !pctx->inode->i_size_high &&
3737             blockcnt > (1 << (21 - fs->super->s_log_block_size)))
3738                 problem = PR_1_TOOBIG_DIR;
3739         if (p->is_dir && p->num_blocks + 1 >= p->max_blocks)
3740                 problem = PR_1_TOOBIG_DIR;
3741         if (p->is_reg && p->num_blocks + 1 >= p->max_blocks)
3742                 problem = PR_1_TOOBIG_REG;
3743         if (!p->is_dir && !p->is_reg && blockcnt > 0)
3744                 problem = PR_1_TOOBIG_SYMLINK;
3745
3746         if (blk < fs->super->s_first_data_block ||
3747             blk >= ext2fs_blocks_count(fs->super))
3748                 problem = PR_1_ILLEGAL_BLOCK_NUM;
3749
3750         /*
3751          * If this IND/DIND/TIND block is squatting atop some critical metadata
3752          * (group descriptors, superblock, bitmap, inode table), any write to
3753          * "fix" mapping problems will destroy the metadata.  We'll let pass 1b
3754          * fix that and restart fsck.
3755          */
3756         if (blockcnt < 0 &&
3757             p->ino != EXT2_RESIZE_INO &&
3758             blk < ctx->fs->super->s_blocks_count &&
3759             ext2fs_test_block_bitmap2(ctx->block_metadata_map, blk)) {
3760                 pctx->blk = blk;
3761                 fix_problem(ctx, PR_1_CRITICAL_METADATA_COLLISION, pctx);
3762                 if ((ctx->options & E2F_OPT_NO) == 0)
3763                         ctx->flags |= E2F_FLAG_RESTART_LATER;
3764         }
3765
3766         if (problem) {
3767                 p->num_illegal_blocks++;
3768                 /*
3769                  * A bit of subterfuge here -- we're trying to fix a block
3770                  * mapping, but the IND/DIND/TIND block could have collided
3771                  * with some critical metadata.  So, fix the in-core mapping so
3772                  * iterate won't go insane, but return 0 instead of
3773                  * BLOCK_CHANGED so that it won't write the remapping out to
3774                  * our multiply linked block.
3775                  *
3776                  * Even if we previously determined that an *IND block
3777                  * conflicts with critical metadata, we must still try to
3778                  * iterate the *IND block as if it is an *IND block to find and
3779                  * mark the blocks it points to.  Better to be overly cautious
3780                  * with the used_blocks map so that we don't move the *IND
3781                  * block to a block that's really in use!
3782                  */
3783                 if (p->ino != EXT2_RESIZE_INO &&
3784                     ref_block != 0 &&
3785                     ext2fs_test_block_bitmap2(ctx->block_metadata_map,
3786                                               ref_block)) {
3787                         *block_nr = 0;
3788                         return 0;
3789                 }
3790                 if (!p->suppress && (p->num_illegal_blocks % 12) == 0) {
3791                         if (fix_problem(ctx, PR_1_TOO_MANY_BAD_BLOCKS, pctx)) {
3792                                 p->clear = 1;
3793                                 return BLOCK_ABORT;
3794                         }
3795                         if (fix_problem(ctx, PR_1_SUPPRESS_MESSAGES, pctx)) {
3796                                 p->suppress = 1;
3797                                 set_latch_flags(PR_LATCH_BLOCK,
3798                                                 PRL_SUPPRESS, 0);
3799                         }
3800                 }
3801                 pctx->blk = blk;
3802                 pctx->blkcount = blockcnt;
3803                 if (fix_problem(ctx, problem, pctx)) {
3804                         blk = *block_nr = 0;
3805                         ret_code = BLOCK_CHANGED;
3806                         p->inode_modified = 1;
3807                         /*
3808                          * If the directory block is too big and is beyond the
3809                          * end of the FS, don't bother trying to add it for
3810                          * processing -- the kernel would never have created a
3811                          * directory this large, and we risk an ENOMEM abort.
3812                          * In any case, the toobig handler for extent-based
3813                          * directories also doesn't feed toobig blocks to
3814                          * pass 2.
3815                          */
3816                         if (problem == PR_1_TOOBIG_DIR)
3817                                 return ret_code;
3818                         goto mark_dir;
3819                 } else
3820                         return 0;
3821         }
3822
3823         if (p->ino == EXT2_RESIZE_INO) {
3824                 /*
3825                  * The resize inode has already be sanity checked
3826                  * during pass #0 (the superblock checks).  All we
3827                  * have to do is mark the double indirect block as
3828                  * being in use; all of the other blocks are handled
3829                  * by mark_table_blocks()).
3830                  */
3831                 if (blockcnt == BLOCK_COUNT_DIND)
3832                         mark_block_used(ctx, blk);
3833                 p->num_blocks++;
3834         } else if (!(ctx->fs->cluster_ratio_bits &&
3835                      p->previous_block &&
3836                      (EXT2FS_B2C(ctx->fs, blk) ==
3837                       EXT2FS_B2C(ctx->fs, p->previous_block)) &&
3838                      (blk & EXT2FS_CLUSTER_MASK(ctx->fs)) ==
3839                      ((unsigned) blockcnt & EXT2FS_CLUSTER_MASK(ctx->fs)))) {
3840                 mark_block_used(ctx, blk);
3841                 p->num_blocks++;
3842         } else if (has_unaligned_cluster_map(ctx, p->previous_block,
3843                                              p->last_block, blk, blockcnt)) {
3844                 pctx->blk = blockcnt;
3845                 pctx->blk2 = blk;
3846                 fix_problem(ctx, PR_1_MISALIGNED_CLUSTER, pctx);
3847                 mark_block_used(ctx, blk);
3848                 mark_block_used(ctx, blk);
3849         }
3850         if (blockcnt >= 0)
3851                 p->last_block = blockcnt;
3852         p->previous_block = blk;
3853 mark_dir:
3854         if (p->is_dir && (blockcnt >= 0)) {
3855                 while (++p->last_db_block < blockcnt) {
3856                         pctx->errcode = ext2fs_add_dir_block2(fs->dblist,
3857                                                               p->ino, 0,
3858                                                               p->last_db_block);
3859                         if (pctx->errcode) {
3860                                 pctx->blk = 0;
3861                                 pctx->num = p->last_db_block;
3862                                 goto failed_add_dir_block;
3863                         }
3864                 }
3865                 pctx->errcode = ext2fs_add_dir_block2(fs->dblist, p->ino,
3866                                                       blk, blockcnt);
3867                 if (pctx->errcode) {
3868                         pctx->blk = blk;
3869                         pctx->num = blockcnt;
3870                 failed_add_dir_block:
3871                         fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
3872                         /* Should never get here */
3873                         ctx->flags |= E2F_FLAG_ABORT;
3874                         return BLOCK_ABORT;
3875                 }
3876         }
3877         return ret_code;
3878 }
3879
3880 static int process_bad_block(ext2_filsys fs,
3881                       blk64_t *block_nr,
3882                       e2_blkcnt_t blockcnt,
3883                       blk64_t ref_block EXT2FS_ATTR((unused)),
3884                       int ref_offset EXT2FS_ATTR((unused)),
3885                       void *priv_data)
3886 {
3887         struct process_block_struct *p;
3888         blk64_t         blk = *block_nr;
3889         blk64_t         first_block;
3890         dgrp_t          i;
3891         struct problem_context *pctx;
3892         e2fsck_t        ctx;
3893
3894         if (!blk)
3895                 return 0;
3896
3897         p = (struct process_block_struct *) priv_data;
3898         ctx = p->ctx;
3899         pctx = p->pctx;
3900
3901         pctx->ino = EXT2_BAD_INO;
3902         pctx->blk = blk;
3903         pctx->blkcount = blockcnt;
3904
3905         if ((blk < fs->super->s_first_data_block) ||
3906             (blk >= ext2fs_blocks_count(fs->super))) {
3907                 if (fix_problem(ctx, PR_1_BB_ILLEGAL_BLOCK_NUM, pctx)) {
3908                         *block_nr = 0;
3909                         return BLOCK_CHANGED;
3910                 } else
3911                         return 0;
3912         }
3913
3914         if (blockcnt < 0) {
3915                 if (ext2fs_test_block_bitmap2(p->fs_meta_blocks, blk)) {
3916                         p->bbcheck = 1;
3917                         if (fix_problem(ctx, PR_1_BB_FS_BLOCK, pctx)) {
3918                                 *block_nr = 0;
3919                                 return BLOCK_CHANGED;
3920                         }
3921                 } else if (ext2fs_test_block_bitmap2(ctx->block_found_map,
3922                                                     blk)) {
3923                         p->bbcheck = 1;
3924                         if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK,
3925                                         pctx)) {
3926                                 *block_nr = 0;
3927                                 return BLOCK_CHANGED;
3928                         }
3929                         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
3930                                 return BLOCK_ABORT;
3931                 } else
3932                         mark_block_used(ctx, blk);
3933                 return 0;
3934         }
3935 #if 0
3936         printf ("DEBUG: Marking %u as bad.\n", blk);
3937 #endif
3938         ctx->fs_badblocks_count++;
3939         /*
3940          * If the block is not used, then mark it as used and return.
3941          * If it is already marked as found, this must mean that
3942          * there's an overlap between the filesystem table blocks
3943          * (bitmaps and inode table) and the bad block list.
3944          */
3945         if (!ext2fs_test_block_bitmap2(ctx->block_found_map, blk)) {
3946                 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
3947                 return 0;
3948         }
3949         /*
3950          * Try to find the where the filesystem block was used...
3951          */
3952         first_block = fs->super->s_first_data_block;
3953
3954         for (i = 0; i < fs->group_desc_count; i++ ) {
3955                 pctx->group = i;
3956                 pctx->blk = blk;
3957                 if (!ext2fs_bg_has_super(fs, i))
3958                         goto skip_super;
3959                 if (blk == first_block) {
3960                         if (i == 0) {
3961                                 if (fix_problem(ctx,
3962                                                 PR_1_BAD_PRIMARY_SUPERBLOCK,
3963                                                 pctx)) {
3964                                         *block_nr = 0;
3965                                         return BLOCK_CHANGED;
3966                                 }
3967                                 return 0;
3968                         }
3969                         fix_problem(ctx, PR_1_BAD_SUPERBLOCK, pctx);
3970                         return 0;
3971                 }
3972                 if ((blk > first_block) &&
3973                     (blk <= first_block + fs->desc_blocks)) {
3974                         if (i == 0) {
3975                                 pctx->blk = *block_nr;
3976                                 if (fix_problem(ctx,
3977                         PR_1_BAD_PRIMARY_GROUP_DESCRIPTOR, pctx)) {
3978                                         *block_nr = 0;
3979                                         return BLOCK_CHANGED;
3980                                 }
3981                                 return 0;
3982                         }
3983                         fix_problem(ctx, PR_1_BAD_GROUP_DESCRIPTORS, pctx);
3984                         return 0;
3985                 }
3986         skip_super:
3987                 if (blk == ext2fs_block_bitmap_loc(fs, i)) {
3988                         if (fix_problem(ctx, PR_1_BB_BAD_BLOCK, pctx)) {
3989                                 ctx->invalid_block_bitmap_flag[i]++;
3990                                 ctx->invalid_bitmaps++;
3991                         }
3992                         return 0;
3993                 }
3994                 if (blk == ext2fs_inode_bitmap_loc(fs, i)) {
3995                         if (fix_problem(ctx, PR_1_IB_BAD_BLOCK, pctx)) {
3996                                 ctx->invalid_inode_bitmap_flag[i]++;
3997                                 ctx->invalid_bitmaps++;
3998                         }
3999                         return 0;
4000                 }
4001                 if ((blk >= ext2fs_inode_table_loc(fs, i)) &&
4002                     (blk < (ext2fs_inode_table_loc(fs, i) +
4003                             fs->inode_blocks_per_group))) {
4004                         /*
4005                          * If there are bad blocks in the inode table,
4006                          * the inode scan code will try to do
4007                          * something reasonable automatically.
4008                          */
4009                         return 0;
4010                 }
4011                 first_block += fs->super->s_blocks_per_group;
4012         }
4013         /*
4014          * If we've gotten to this point, then the only
4015          * possibility is that the bad block inode meta data
4016          * is using a bad block.
4017          */
4018         if ((blk == p->inode->i_block[EXT2_IND_BLOCK]) ||
4019             (blk == p->inode->i_block[EXT2_DIND_BLOCK]) ||
4020             (blk == p->inode->i_block[EXT2_TIND_BLOCK])) {
4021                 p->bbcheck = 1;
4022                 if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK, pctx)) {
4023                         *block_nr = 0;
4024                         return BLOCK_CHANGED;
4025                 }
4026                 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
4027                         return BLOCK_ABORT;
4028                 return 0;
4029         }
4030
4031         pctx->group = -1;
4032
4033         /* Warn user that the block wasn't claimed */
4034         fix_problem(ctx, PR_1_PROGERR_CLAIMED_BLOCK, pctx);
4035
4036         return 0;
4037 }
4038
4039 static void new_table_block(e2fsck_t ctx, blk64_t first_block, dgrp_t group,
4040                             const char *name, int num, blk64_t *new_block)
4041 {
4042         ext2_filsys fs = ctx->fs;
4043         dgrp_t          last_grp;
4044         blk64_t         old_block = *new_block;
4045         blk64_t         last_block;
4046         dgrp_t          flexbg;
4047         unsigned        flexbg_size;
4048         int             i, is_flexbg;
4049         char            *buf;
4050         struct problem_context  pctx;
4051
4052         clear_problem_context(&pctx);
4053
4054         pctx.group = group;
4055         pctx.blk = old_block;
4056         pctx.str = name;
4057
4058         /*
4059          * For flex_bg filesystems, first try to allocate the metadata
4060          * within the flex_bg, and if that fails then try finding the
4061          * space anywhere in the filesystem.
4062          */
4063         is_flexbg = ext2fs_has_feature_flex_bg(fs->super);
4064         if (is_flexbg) {
4065                 flexbg_size = 1 << fs->super->s_log_groups_per_flex;
4066                 flexbg = group / flexbg_size;
4067                 first_block = ext2fs_group_first_block2(fs,
4068                                                         flexbg_size * flexbg);
4069                 last_grp = group | (flexbg_size - 1);
4070                 if (last_grp >= fs->group_desc_count)
4071                         last_grp = fs->group_desc_count - 1;
4072                 last_block = ext2fs_group_last_block2(fs, last_grp);
4073         } else
4074                 last_block = ext2fs_group_last_block2(fs, group);
4075         pctx.errcode = ext2fs_get_free_blocks2(fs, first_block, last_block,
4076                                                num, ctx->block_found_map,
4077                                                new_block);
4078         if (is_flexbg && (pctx.errcode == EXT2_ET_BLOCK_ALLOC_FAIL))
4079                 pctx.errcode = ext2fs_get_free_blocks2(fs,
4080                                 fs->super->s_first_data_block,
4081                                 ext2fs_blocks_count(fs->super),
4082                                 num, ctx->block_found_map, new_block);
4083         if (pctx.errcode) {
4084                 pctx.num = num;
4085                 fix_problem(ctx, PR_1_RELOC_BLOCK_ALLOCATE, &pctx);
4086                 ext2fs_unmark_valid(fs);
4087                 ctx->flags |= E2F_FLAG_ABORT;
4088                 return;
4089         }
4090         pctx.errcode = ext2fs_get_mem(fs->blocksize, &buf);
4091         if (pctx.errcode) {
4092                 fix_problem(ctx, PR_1_RELOC_MEMORY_ALLOCATE, &pctx);
4093                 ext2fs_unmark_valid(fs);
4094                 ctx->flags |= E2F_FLAG_ABORT;
4095                 return;
4096         }
4097         ext2fs_mark_super_dirty(fs);
4098         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
4099         pctx.blk2 = *new_block;
4100         fix_problem(ctx, (old_block ? PR_1_RELOC_FROM_TO :
4101                           PR_1_RELOC_TO), &pctx);
4102         pctx.blk2 = 0;
4103         for (i = 0; i < num; i++) {
4104                 pctx.blk = i;
4105                 ext2fs_mark_block_bitmap2(ctx->block_found_map, (*new_block)+i);
4106                 if (old_block) {
4107                         pctx.errcode = io_channel_read_blk64(fs->io,
4108                                    old_block + i, 1, buf);
4109                         if (pctx.errcode)
4110                                 fix_problem(ctx, PR_1_RELOC_READ_ERR, &pctx);
4111                         pctx.blk = (*new_block) + i;
4112                         pctx.errcode = io_channel_write_blk64(fs->io, pctx.blk,
4113                                                               1, buf);
4114                 } else {
4115                         pctx.blk = (*new_block) + i;
4116                         pctx.errcode = ext2fs_zero_blocks2(fs, pctx.blk, 1,
4117                                                            NULL, NULL);
4118                 }
4119
4120                 if (pctx.errcode)
4121                         fix_problem(ctx, PR_1_RELOC_WRITE_ERR, &pctx);
4122         }
4123         ext2fs_free_mem(&buf);
4124 }
4125
4126 /*
4127  * This routine gets called at the end of pass 1 if bad blocks are
4128  * detected in the superblock, group descriptors, inode_bitmaps, or
4129  * block bitmaps.  At this point, all of the blocks have been mapped
4130  * out, so we can try to allocate new block(s) to replace the bad
4131  * blocks.
4132  */
4133 static void handle_fs_bad_blocks(e2fsck_t ctx)
4134 {
4135         ext2_filsys fs = ctx->fs;
4136         dgrp_t          i;
4137         blk64_t         first_block;
4138         blk64_t         new_blk;
4139
4140         for (i = 0; i < fs->group_desc_count; i++) {
4141                 first_block = ext2fs_group_first_block2(fs, i);
4142
4143                 if (ctx->invalid_block_bitmap_flag[i]) {
4144                         new_blk = ext2fs_block_bitmap_loc(fs, i);
4145                         new_table_block(ctx, first_block, i, _("block bitmap"),
4146                                         1, &new_blk);
4147                         ext2fs_block_bitmap_loc_set(fs, i, new_blk);
4148                 }
4149                 if (ctx->invalid_inode_bitmap_flag[i]) {
4150                         new_blk = ext2fs_inode_bitmap_loc(fs, i);
4151                         new_table_block(ctx, first_block, i, _("inode bitmap"),
4152                                         1, &new_blk);
4153                         ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
4154                 }
4155                 if (ctx->invalid_inode_table_flag[i]) {
4156                         new_blk = ext2fs_inode_table_loc(fs, i);
4157                         new_table_block(ctx, first_block, i, _("inode table"),
4158                                         fs->inode_blocks_per_group,
4159                                         &new_blk);
4160                         ext2fs_inode_table_loc_set(fs, i, new_blk);
4161                         ctx->flags |= E2F_FLAG_RESTART;
4162                 }
4163         }
4164         ctx->invalid_bitmaps = 0;
4165 }
4166
4167 /*
4168  * This routine marks all blocks which are used by the superblock,
4169  * group descriptors, inode bitmaps, and block bitmaps.
4170  */
4171 static void mark_table_blocks(e2fsck_t ctx)
4172 {
4173         ext2_filsys fs = ctx->fs;
4174         blk64_t b;
4175         dgrp_t  i;
4176         unsigned int    j;
4177         struct problem_context pctx;
4178
4179         clear_problem_context(&pctx);
4180
4181         for (i = 0; i < fs->group_desc_count; i++) {
4182                 pctx.group = i;
4183
4184                 ext2fs_reserve_super_and_bgd(fs, i, ctx->block_found_map);
4185                 ext2fs_reserve_super_and_bgd(fs, i, ctx->block_metadata_map);
4186
4187                 /*
4188                  * Mark the blocks used for the inode table
4189                  */
4190                 if (ext2fs_inode_table_loc(fs, i)) {
4191                         for (j = 0, b = ext2fs_inode_table_loc(fs, i);
4192                              j < fs->inode_blocks_per_group;
4193                              j++, b++) {
4194                                 if (ext2fs_test_block_bitmap2(ctx->block_found_map,
4195                                                              b)) {
4196                                         pctx.blk = b;
4197                                         if (!ctx->invalid_inode_table_flag[i] &&
4198                                             fix_problem(ctx,
4199                                                 PR_1_ITABLE_CONFLICT, &pctx)) {
4200                                                 ctx->invalid_inode_table_flag[i]++;
4201                                                 ctx->invalid_bitmaps++;
4202                                         }
4203                                 } else {
4204                                     ext2fs_mark_block_bitmap2(
4205                                                 ctx->block_found_map, b);
4206                                     ext2fs_mark_block_bitmap2(
4207                                                 ctx->block_metadata_map, b);
4208                                 }
4209                         }
4210                 }
4211
4212                 /*
4213                  * Mark block used for the block bitmap
4214                  */
4215                 if (ext2fs_block_bitmap_loc(fs, i)) {
4216                         if (ext2fs_test_block_bitmap2(ctx->block_found_map,
4217                                      ext2fs_block_bitmap_loc(fs, i))) {
4218                                 pctx.blk = ext2fs_block_bitmap_loc(fs, i);
4219                                 if (fix_problem(ctx, PR_1_BB_CONFLICT, &pctx)) {
4220                                         ctx->invalid_block_bitmap_flag[i]++;
4221                                         ctx->invalid_bitmaps++;
4222                                 }
4223                         } else {
4224                             ext2fs_mark_block_bitmap2(ctx->block_found_map,
4225                                      ext2fs_block_bitmap_loc(fs, i));
4226                             ext2fs_mark_block_bitmap2(ctx->block_metadata_map,
4227                                      ext2fs_block_bitmap_loc(fs, i));
4228                         }
4229                 }
4230                 /*
4231                  * Mark block used for the inode bitmap
4232                  */
4233                 if (ext2fs_inode_bitmap_loc(fs, i)) {
4234                         if (ext2fs_test_block_bitmap2(ctx->block_found_map,
4235                                      ext2fs_inode_bitmap_loc(fs, i))) {
4236                                 pctx.blk = ext2fs_inode_bitmap_loc(fs, i);
4237                                 if (fix_problem(ctx, PR_1_IB_CONFLICT, &pctx)) {
4238                                         ctx->invalid_inode_bitmap_flag[i]++;
4239                                         ctx->invalid_bitmaps++;
4240                                 }
4241                         } else {
4242                             ext2fs_mark_block_bitmap2(ctx->block_metadata_map,
4243                                      ext2fs_inode_bitmap_loc(fs, i));
4244                             ext2fs_mark_block_bitmap2(ctx->block_found_map,
4245                                      ext2fs_inode_bitmap_loc(fs, i));
4246                         }
4247                 }
4248         }
4249 }
4250
4251 /*
4252  * These subroutines short circuits ext2fs_get_blocks and
4253  * ext2fs_check_directory; we use them since we already have the inode
4254  * structure, so there's no point in letting the ext2fs library read
4255  * the inode again.
4256  */
4257 static errcode_t pass1_get_blocks(ext2_filsys fs, ext2_ino_t ino,
4258                                   blk_t *blocks)
4259 {
4260         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4261         int     i;
4262
4263         if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
4264                 return EXT2_ET_CALLBACK_NOTHANDLED;
4265
4266         for (i=0; i < EXT2_N_BLOCKS; i++)
4267                 blocks[i] = ctx->stashed_inode->i_block[i];
4268         return 0;
4269 }
4270
4271 static errcode_t pass1_read_inode(ext2_filsys fs, ext2_ino_t ino,
4272                                   struct ext2_inode *inode)
4273 {
4274         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4275
4276         if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
4277                 return EXT2_ET_CALLBACK_NOTHANDLED;
4278         *inode = *ctx->stashed_inode;
4279         return 0;
4280 }
4281
4282 static errcode_t pass1_write_inode(ext2_filsys fs, ext2_ino_t ino,
4283                             struct ext2_inode *inode)
4284 {
4285         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4286
4287         if ((ino == ctx->stashed_ino) && ctx->stashed_inode &&
4288                 (inode != ctx->stashed_inode))
4289                 *ctx->stashed_inode = *inode;
4290         return EXT2_ET_CALLBACK_NOTHANDLED;
4291 }
4292
4293 static errcode_t pass1_check_directory(ext2_filsys fs, ext2_ino_t ino)
4294 {
4295         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4296
4297         if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
4298                 return EXT2_ET_CALLBACK_NOTHANDLED;
4299
4300         if (!LINUX_S_ISDIR(ctx->stashed_inode->i_mode))
4301                 return EXT2_ET_NO_DIRECTORY;
4302         return 0;
4303 }
4304
4305 static errcode_t e2fsck_get_alloc_block(ext2_filsys fs, blk64_t goal,
4306                                         blk64_t *ret)
4307 {
4308         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4309         errcode_t       retval;
4310         blk64_t         new_block;
4311
4312         if (ctx->block_found_map) {
4313                 retval = ext2fs_new_block2(fs, goal, ctx->block_found_map,
4314                                            &new_block);
4315                 if (retval)
4316                         return retval;
4317                 if (fs->block_map) {
4318                         ext2fs_mark_block_bitmap2(fs->block_map, new_block);
4319                         ext2fs_mark_bb_dirty(fs);
4320                 }
4321         } else {
4322                 if (!fs->block_map) {
4323                         retval = ext2fs_read_block_bitmap(fs);
4324                         if (retval)
4325                                 return retval;
4326                 }
4327
4328                 retval = ext2fs_new_block2(fs, goal, fs->block_map, &new_block);
4329                 if (retval)
4330                         return retval;
4331         }
4332
4333         *ret = new_block;
4334         return (0);
4335 }
4336
4337 static errcode_t e2fsck_new_range(ext2_filsys fs, int flags, blk64_t goal,
4338                                   blk64_t len, blk64_t *pblk, blk64_t *plen)
4339 {
4340         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4341         errcode_t       retval;
4342
4343         if (ctx->block_found_map)
4344                 return ext2fs_new_range(fs, flags, goal, len,
4345                                         ctx->block_found_map, pblk, plen);
4346
4347         if (!fs->block_map) {
4348                 retval = ext2fs_read_block_bitmap(fs);
4349                 if (retval)
4350                         return retval;
4351         }
4352
4353         return ext2fs_new_range(fs, flags, goal, len, fs->block_map,
4354                                 pblk, plen);
4355 }
4356
4357 static void e2fsck_block_alloc_stats(ext2_filsys fs, blk64_t blk, int inuse)
4358 {
4359         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4360
4361         /* Never free a critical metadata block */
4362         if (ctx->block_found_map &&
4363             ctx->block_metadata_map &&
4364             inuse < 0 &&
4365             ext2fs_test_block_bitmap2(ctx->block_metadata_map, blk))
4366                 return;
4367
4368         if (ctx->block_found_map) {
4369                 if (inuse > 0)
4370                         ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
4371                 else
4372                         ext2fs_unmark_block_bitmap2(ctx->block_found_map, blk);
4373         }
4374 }
4375
4376 static void e2fsck_block_alloc_stats_range(ext2_filsys fs, blk64_t blk,
4377                                            blk_t num, int inuse)
4378 {
4379         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4380
4381         /* Never free a critical metadata block */
4382         if (ctx->block_found_map &&
4383             ctx->block_metadata_map &&
4384             inuse < 0 &&
4385             ext2fs_test_block_bitmap_range2(ctx->block_metadata_map, blk, num))
4386                 return;
4387
4388         if (ctx->block_found_map) {
4389                 if (inuse > 0)
4390                         ext2fs_mark_block_bitmap_range2(ctx->block_found_map,
4391                                                         blk, num);
4392                 else
4393                         ext2fs_unmark_block_bitmap_range2(ctx->block_found_map,
4394                                                         blk, num);
4395         }
4396 }
4397
4398 void e2fsck_use_inode_shortcuts(e2fsck_t ctx, int use_shortcuts)
4399 {
4400         ext2_filsys fs = ctx->fs;
4401
4402         if (use_shortcuts) {
4403                 fs->get_blocks = pass1_get_blocks;
4404                 fs->check_directory = pass1_check_directory;
4405                 fs->read_inode = pass1_read_inode;
4406                 fs->write_inode = pass1_write_inode;
4407                 ctx->stashed_ino = 0;
4408         } else {
4409                 fs->get_blocks = 0;
4410                 fs->check_directory = 0;
4411                 fs->read_inode = 0;
4412                 fs->write_inode = 0;
4413         }
4414 }
4415
4416 void e2fsck_intercept_block_allocations(e2fsck_t ctx)
4417 {
4418         ext2fs_set_alloc_block_callback(ctx->fs, e2fsck_get_alloc_block, 0);
4419         ext2fs_set_block_alloc_stats_callback(ctx->fs,
4420                                                 e2fsck_block_alloc_stats, 0);
4421         ext2fs_set_new_range_callback(ctx->fs, e2fsck_new_range, NULL);
4422         ext2fs_set_block_alloc_stats_range_callback(ctx->fs,
4423                                         e2fsck_block_alloc_stats_range, NULL);
4424 }