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, ext2_ino_t ino);
  83 static void add_casefolded_dir(e2fsck_t ctx, ext2_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, signed_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_entry3(ctx->fs, entry, NULL, &hash,
 347                                              &signed_hash);
 348         if (retval) {
 349                 com_err("check_large_ea_inode", retval,
 350                         _("while hashing entry with e_value_inum = %u"),
 351                         entry->e_value_inum);
 352                 fatal_error(ctx, 0);
 353         }
 354
 355         if ((hash == entry->e_hash) || (signed_hash == entry->e_hash)) {
 356                 *quota_blocks = size_to_quota_blocks(ctx->fs,
 357                                                      entry->e_value_size);
 358         } else {
 359                 /* This might be an old Lustre-style ea_inode reference. */
 360                 if (inode.i_mtime == pctx->ino &&
 361                     inode.i_generation == pctx->inode->i_generation) {
 362                         *quota_blocks = 0;
 363                 } else {
 364                         /* If target inode is also missing EA_INODE flag,
 365                          * this is likely to be a bad reference.
 366                          */
 367                         if (!(inode.i_flags & EXT4_EA_INODE_FL)) {
 368                                 pctx->num = entry->e_value_inum;
 369                                 return PR_1_ATTR_VALUE_EA_INODE;
 370                         } else {
 371                                 pctx->num = entry->e_hash;
 372                                 return PR_1_ATTR_HASH;
 373                         }
 374                 }
 375         }
 376
 377         if (!(inode.i_flags & EXT4_EA_INODE_FL)) {
 378                 pctx->num = entry->e_value_inum;
 379                 if (fix_problem(ctx, PR_1_ATTR_SET_EA_INODE_FL, pctx)) {
 380                         inode.i_flags |= EXT4_EA_INODE_FL;
 381                         ext2fs_write_inode(ctx->fs, entry->e_value_inum,
 382                                            &inode);
 383                 } else {
 384                         return PR_1_ATTR_NO_EA_INODE_FL;
 385                 }
 386         }
 387         return 0;
 388 }
 389
 390 static void inc_ea_inode_refs(e2fsck_t ctx, struct problem_context *pctx,
 391                               struct ext2_ext_attr_entry *first, void *end)
 392 {
 393         struct ext2_ext_attr_entry *entry = first;
 394         struct ext2_ext_attr_entry *np = EXT2_EXT_ATTR_NEXT(entry);
 395
 396         while ((void *) entry < end && (void *) np < end &&
 397                !EXT2_EXT_IS_LAST_ENTRY(entry)) {
 398                 if (!entry->e_value_inum)
 399                         goto next;
 400                 if (!ctx->ea_inode_refs) {
 401                         pctx->errcode = ea_refcount_create(0,
 402                                                            &ctx->ea_inode_refs);
 403                         if (pctx->errcode) {
 404                                 pctx->num = 4;
 405                                 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
 406                                 ctx->flags |= E2F_FLAG_ABORT;
 407                                 return;
 408                         }
 409                 }
 410                 ea_refcount_increment(ctx->ea_inode_refs, entry->e_value_inum,
 411                                       0);
 412         next:
 413                 entry = np;
 414                 np = EXT2_EXT_ATTR_NEXT(entry);
 415         }
 416 }
 417
 418 static void check_ea_in_inode(e2fsck_t ctx, struct problem_context *pctx,
 419                               struct ea_quota *ea_ibody_quota)
 420 {
 421         struct ext2_super_block *sb = ctx->fs->super;
 422         struct ext2_inode_large *inode;
 423         struct ext2_ext_attr_entry *entry;
 424         char *start, *header, *end;
 425         unsigned int storage_size, remain;
 426         problem_t problem = 0;
 427         region_t region = 0;
 428
 429         ea_ibody_quota->blocks = 0;
 430         ea_ibody_quota->inodes = 0;
 431
 432         inode = (struct ext2_inode_large *) pctx->inode;
 433         storage_size = EXT2_INODE_SIZE(ctx->fs->super) - EXT2_GOOD_OLD_INODE_SIZE -
 434                 inode->i_extra_isize;
 435         header = ((char *) inode) + EXT2_GOOD_OLD_INODE_SIZE +
 436                  inode->i_extra_isize;
 437         end = header + storage_size;
 438         start = header + sizeof(__u32);
 439         entry = (struct ext2_ext_attr_entry *) start;
 440
 441         /* scan all entry's headers first */
 442
 443         /* take finish entry 0UL into account */
 444         remain = storage_size - sizeof(__u32);
 445
 446         region = region_create(0, storage_size);
 447         if (!region) {
 448                 fix_problem(ctx, PR_1_EA_ALLOC_REGION_ABORT, pctx);
 449                 problem = 0;
 450                 ctx->flags |= E2F_FLAG_ABORT;
 451                 return;
 452         }
 453         if (region_allocate(region, 0, sizeof(__u32))) {
 454                 problem = PR_1_INODE_EA_ALLOC_COLLISION;
 455                 goto fix;
 456         }
 457
 458         while (remain >= sizeof(struct ext2_ext_attr_entry) &&
 459                !EXT2_EXT_IS_LAST_ENTRY(entry)) {
 460                 __u32 hash;
 461
 462                 if (region_allocate(region, (char *)entry - (char *)header,
 463                                     EXT2_EXT_ATTR_LEN(entry->e_name_len))) {
 464                         problem = PR_1_INODE_EA_ALLOC_COLLISION;
 465                         goto fix;
 466                 }
 467
 468                 /* header eats this space */
 469                 remain -= sizeof(struct ext2_ext_attr_entry);
 470
 471                 /* is attribute name valid? */
 472                 if (EXT2_EXT_ATTR_SIZE(entry->e_name_len) > remain) {
 473                         pctx->num = entry->e_name_len;
 474                         problem = PR_1_ATTR_NAME_LEN;
 475                         goto fix;
 476                 }
 477
 478                 /* attribute len eats this space */
 479                 remain -= EXT2_EXT_ATTR_SIZE(entry->e_name_len);
 480
 481                 if (entry->e_value_inum == 0) {
 482                         /* check value size */
 483                         if (entry->e_value_size > remain) {
 484                                 pctx->num = entry->e_value_size;
 485                                 problem = PR_1_ATTR_VALUE_SIZE;
 486                                 goto fix;
 487                         }
 488
 489                         if (entry->e_value_size &&
 490                             region_allocate(region,
 491                                             sizeof(__u32) + entry->e_value_offs,
 492                                             EXT2_EXT_ATTR_SIZE(
 493                                                 entry->e_value_size))) {
 494                                 problem = PR_1_INODE_EA_ALLOC_COLLISION;
 495                                 goto fix;
 496                         }
 497
 498                         hash = ext2fs_ext_attr_hash_entry(entry,
 499                                                 start + entry->e_value_offs);
 500                         if (entry->e_hash != 0 && entry->e_hash != hash)
 501                                 hash = ext2fs_ext_attr_hash_entry_signed(entry,
 502                                                 start + entry->e_value_offs);
 503
 504                         /* e_hash may be 0 in older inode's ea */
 505                         if (entry->e_hash != 0 && entry->e_hash != hash) {
 506                                 pctx->num = entry->e_hash;
 507                                 problem = PR_1_ATTR_HASH;
 508                                 goto fix;
 509                         }
 510                 } else {
 511                         blk64_t quota_blocks;
 512
 513                         problem = check_large_ea_inode(ctx, entry, pctx,
 514                                                        &quota_blocks);
 515                         if (problem != 0)
 516                                 goto fix;
 517
 518                         ea_ibody_quota->blocks += quota_blocks;
 519                         ea_ibody_quota->inodes++;
 520                 }
 521
 522                 /* If EA value is stored in external inode then it does not
 523                  * consume space here */
 524                 if (entry->e_value_inum == 0)
 525                         remain -= entry->e_value_size;
 526
 527                 entry = EXT2_EXT_ATTR_NEXT(entry);
 528         }
 529
 530         if (region_allocate(region, (char *)entry - (char *)header,
 531                             sizeof(__u32))) {
 532                 problem = PR_1_INODE_EA_ALLOC_COLLISION;
 533                 goto fix;
 534         }
 535 fix:
 536         if (region)
 537                 region_free(region);
 538         /*
 539          * it seems like a corruption. it's very unlikely we could repair
 540          * EA(s) in automatic fashion -bzzz
 541          */
 542         if (problem == 0 || !fix_problem(ctx, problem, pctx)) {
 543                 inc_ea_inode_refs(ctx, pctx,
 544                                   (struct ext2_ext_attr_entry *)start, end);
 545                 return;
 546         }
 547
 548         /* simply remove all possible EA(s) */
 549         *((__u32 *)header) = 0UL;
 550         e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
 551                                 EXT2_INODE_SIZE(sb), "pass1");
 552         ea_ibody_quota->blocks = 0;
 553         ea_ibody_quota->inodes = 0;
 554 }
 555
 556 static int check_inode_extra_negative_epoch(__u32 xtime, __u32 extra) {
 557         return (xtime & (1U << 31)) != 0 &&
 558                 (extra & EXT4_EPOCH_MASK) == EXT4_EPOCH_MASK;
 559 }
 560
 561 #define CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, xtime) \
 562         check_inode_extra_negative_epoch(inode->i_##xtime, \
 563                                          inode->i_##xtime##_extra)
 564
 565 /* When today's date is earlier than 2242, we assume that atimes,
 566  * ctimes, crtimes, and mtimes with years in the range 2310..2378 are
 567  * actually pre-1970 dates mis-encoded.
 568  */
 569 #define EXT4_EXTRA_NEGATIVE_DATE_CUTOFF 2 * (1LL << 32)
 570
 571 static void check_inode_extra_space(e2fsck_t ctx, struct problem_context *pctx,
 572                                     struct ea_quota *ea_ibody_quota)
 573 {
 574         struct ext2_super_block *sb = ctx->fs->super;
 575         struct ext2_inode_large *inode;
 576         __u32 *eamagic;
 577         int min, max;
 578
 579         ea_ibody_quota->blocks = 0;
 580         ea_ibody_quota->inodes = 0;
 581
 582         inode = (struct ext2_inode_large *) pctx->inode;
 583         if (EXT2_INODE_SIZE(sb) == EXT2_GOOD_OLD_INODE_SIZE) {
 584                 /* this isn't large inode. so, nothing to check */
 585                 return;
 586         }
 587
 588 #if 0
 589         printf("inode #%u, i_extra_size %d\n", pctx->ino,
 590                         inode->i_extra_isize);
 591 #endif
 592         /* i_extra_isize must cover i_extra_isize + i_checksum_hi at least */
 593         min = sizeof(inode->i_extra_isize) + sizeof(inode->i_checksum_hi);
 594         max = EXT2_INODE_SIZE(sb) - EXT2_GOOD_OLD_INODE_SIZE;
 595         /*
 596          * For now we will allow i_extra_isize to be 0, but really
 597          * implementations should never allow i_extra_isize to be 0
 598          */
 599         if (inode->i_extra_isize &&
 600             (inode->i_extra_isize < min || inode->i_extra_isize > max ||
 601              inode->i_extra_isize & 3)) {
 602                 if (!fix_problem(ctx, PR_1_EXTRA_ISIZE, pctx))
 603                         return;
 604                 if (inode->i_extra_isize < min || inode->i_extra_isize > max)
 605                         inode->i_extra_isize = sb->s_want_extra_isize;
 606                 else
 607                         inode->i_extra_isize = (inode->i_extra_isize + 3) & ~3;
 608                 e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
 609                                         EXT2_INODE_SIZE(sb), "pass1");
 610         }
 611
 612         /* check if there is no place for an EA header */
 613         if (inode->i_extra_isize >= max - sizeof(__u32))
 614                 return;
 615
 616         eamagic = (__u32 *) (((char *) inode) + EXT2_GOOD_OLD_INODE_SIZE +
 617                         inode->i_extra_isize);
 618         if (*eamagic == EXT2_EXT_ATTR_MAGIC) {
 619                 /* it seems inode has an extended attribute(s) in body */
 620                 check_ea_in_inode(ctx, pctx, ea_ibody_quota);
 621         }
 622
 623         /*
 624          * If the inode's extended atime (ctime, crtime, mtime) is stored in
 625          * the old, invalid format, repair it.
 626          */
 627         if (((sizeof(time_t) <= 4) ||
 628              (((sizeof(time_t) > 4) &&
 629                ctx->now < EXT4_EXTRA_NEGATIVE_DATE_CUTOFF))) &&
 630             (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, atime) ||
 631              CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, ctime) ||
 632              CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, crtime) ||
 633              CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, mtime))) {
 634
 635                 if (!fix_problem(ctx, PR_1_EA_TIME_OUT_OF_RANGE, pctx))
 636                         return;
 637
 638                 if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, atime))
 639                         inode->i_atime_extra &= ~EXT4_EPOCH_MASK;
 640                 if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, ctime))
 641                         inode->i_ctime_extra &= ~EXT4_EPOCH_MASK;
 642                 if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, crtime))
 643                         inode->i_crtime_extra &= ~EXT4_EPOCH_MASK;
 644                 if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, mtime))
 645                         inode->i_mtime_extra &= ~EXT4_EPOCH_MASK;
 646                 e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
 647                                         EXT2_INODE_SIZE(sb), "pass1");
 648         }
 649
 650 }
 651
 652 /*
 653  * Check to see if the inode might really be a directory, despite i_mode
 654  *
 655  * This is a lot of complexity for something for which I'm not really
 656  * convinced happens frequently in the wild.  If for any reason this
 657  * causes any problems, take this code out.
 658  * [tytso:20070331.0827EDT]
 659  */
 660 static void check_is_really_dir(e2fsck_t ctx, struct problem_context *pctx,
 661                                 char *buf)
 662 {
 663         struct ext2_inode *inode = pctx->inode;
 664         struct ext2_dir_entry   *dirent;
 665         errcode_t               retval;
 666         blk64_t                 blk;
 667         unsigned int            i, rec_len, not_device = 0;
 668         int                     extent_fs;
 669         int                     inlinedata_fs;
 670
 671         /*
 672          * If the mode looks OK, we believe it.  If the first block in
 673          * the i_block array is 0, this cannot be a directory. If the
 674          * inode is extent-mapped, it is still the case that the latter
 675          * cannot be 0 - the magic number in the extent header would make
 676          * it nonzero.
 677          */
 678         if (LINUX_S_ISDIR(inode->i_mode) || LINUX_S_ISREG(inode->i_mode) ||
 679             LINUX_S_ISLNK(inode->i_mode) || inode->i_block[0] == 0)
 680                 return;
 681
 682         /*
 683          * Check the block numbers in the i_block array for validity:
 684          * zero blocks are skipped (but the first one cannot be zero -
 685          * see above), other blocks are checked against the first and
 686          * max data blocks (from the the superblock) and against the
 687          * block bitmap. Any invalid block found means this cannot be
 688          * a directory.
 689          *
 690          * If there are non-zero blocks past the fourth entry, then
 691          * this cannot be a device file: we remember that for the next
 692          * check.
 693          *
 694          * For extent mapped files, we don't do any sanity checking:
 695          * just try to get the phys block of logical block 0 and run
 696          * with it.
 697          *
 698          * For inline data files, we just try to get the size of inline
 699          * data.  If it's true, we will treat it as a directory.
 700          */
 701
 702         extent_fs = ext2fs_has_feature_extents(ctx->fs->super);
 703         inlinedata_fs = ext2fs_has_feature_inline_data(ctx->fs->super);
 704         if (inlinedata_fs && (inode->i_flags & EXT4_INLINE_DATA_FL)) {
 705                 size_t size;
 706                 __u32 dotdot;
 707                 unsigned int rec_len2;
 708                 struct ext2_dir_entry de;
 709
 710                 if (ext2fs_inline_data_size(ctx->fs, pctx->ino, &size))
 711                         return;
 712                 /*
 713                  * If the size isn't a multiple of 4, it's probably not a
 714                  * directory??
 715                  */
 716                 if (size & 3)
 717                         return;
 718                 /*
 719                  * If the first 10 bytes don't look like a directory entry,
 720                  * it's probably not a directory.
 721                  */
 722                 memcpy(&dotdot, inode->i_block, sizeof(dotdot));
 723                 memcpy(&de, ((char *)inode->i_block) + EXT4_INLINE_DATA_DOTDOT_SIZE,
 724                        EXT2_DIR_REC_LEN(0));
 725                 dotdot = ext2fs_le32_to_cpu(dotdot);
 726                 de.inode = ext2fs_le32_to_cpu(de.inode);
 727                 de.rec_len = ext2fs_le16_to_cpu(de.rec_len);
 728                 ext2fs_get_rec_len(ctx->fs, &de, &rec_len2);
 729                 if (dotdot >= ctx->fs->super->s_inodes_count ||
 730                     (dotdot < EXT2_FIRST_INO(ctx->fs->super) &&
 731                      dotdot != EXT2_ROOT_INO) ||
 732                     de.inode >= ctx->fs->super->s_inodes_count ||
 733                     (de.inode < EXT2_FIRST_INO(ctx->fs->super) &&
 734                      de.inode != 0) ||
 735                     rec_len2 > EXT4_MIN_INLINE_DATA_SIZE -
 736                               EXT4_INLINE_DATA_DOTDOT_SIZE)
 737                         return;
 738                 /* device files never have a "system.data" entry */
 739                 goto isdir;
 740         } else if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) {
 741                 /* extent mapped */
 742                 if  (ext2fs_bmap2(ctx->fs, pctx->ino, inode, 0, 0, 0, 0,
 743                                  &blk))
 744                         return;
 745                 /* device files are never extent mapped */
 746                 not_device++;
 747         } else {
 748                 for (i=0; i < EXT2_N_BLOCKS; i++) {
 749                         blk = inode->i_block[i];
 750                         if (!blk)
 751                                 continue;
 752                         if (i >= 4)
 753                                 not_device++;
 754
 755                         if (blk < ctx->fs->super->s_first_data_block ||
 756                             blk >= ext2fs_blocks_count(ctx->fs->super) ||
 757                             ext2fs_fast_test_block_bitmap2(ctx->block_found_map,
 758                                                            blk))
 759                                 return; /* Invalid block, can't be dir */
 760                 }
 761                 blk = inode->i_block[0];
 762         }
 763
 764         /*
 765          * If the mode says this is a device file and the i_links_count field
 766          * is sane and we have not ruled it out as a device file previously,
 767          * we declare it a device file, not a directory.
 768          */
 769         if ((LINUX_S_ISCHR(inode->i_mode) || LINUX_S_ISBLK(inode->i_mode)) &&
 770             (inode->i_links_count == 1) && !not_device)
 771                 return;
 772
 773         /* read the first block */
 774         ehandler_operation(_("reading directory block"));
 775         retval = ext2fs_read_dir_block4(ctx->fs, blk, buf, 0, pctx->ino);
 776         ehandler_operation(0);
 777         if (retval)
 778                 return;
 779
 780         dirent = (struct ext2_dir_entry *) buf;
 781         retval = ext2fs_get_rec_len(ctx->fs, dirent, &rec_len);
 782         if (retval)
 783                 return;
 784         if ((ext2fs_dirent_name_len(dirent) != 1) ||
 785             (dirent->name[0] != '.') ||
 786             (dirent->inode != pctx->ino) ||
 787             (rec_len < 12) ||
 788             (rec_len % 4) ||
 789             (rec_len >= ctx->fs->blocksize - 12))
 790                 return;
 791
 792         dirent = (struct ext2_dir_entry *) (buf + rec_len);
 793         retval = ext2fs_get_rec_len(ctx->fs, dirent, &rec_len);
 794         if (retval)
 795                 return;
 796         if ((ext2fs_dirent_name_len(dirent) != 2) ||
 797             (dirent->name[0] != '.') ||
 798             (dirent->name[1] != '.') ||
 799             (rec_len < 12) ||
 800             (rec_len % 4))
 801                 return;
 802
 803 isdir:
 804         if (fix_problem(ctx, PR_1_TREAT_AS_DIRECTORY, pctx)) {
 805                 inode->i_mode = (inode->i_mode & 07777) | LINUX_S_IFDIR;
 806                 e2fsck_write_inode_full(ctx, pctx->ino, inode,
 807                                         EXT2_INODE_SIZE(ctx->fs->super),
 808                                         "check_is_really_dir");
 809         }
 810 }
 811
 812 extern errcode_t e2fsck_setup_icount(e2fsck_t ctx, const char *icount_name,
 813                                      int flags, ext2_icount_t hint,
 814                                      ext2_icount_t *ret)
 815 {
 816         unsigned int            threshold;
 817         unsigned int            save_type;
 818         ext2_ino_t              num_dirs;
 819         errcode_t               retval;
 820         char                    *tdb_dir;
 821         int                     enable;
 822
 823         *ret = 0;
 824
 825         profile_get_string(ctx->profile, "scratch_files", "directory", 0, 0,
 826                            &tdb_dir);
 827         profile_get_uint(ctx->profile, "scratch_files",
 828                          "numdirs_threshold", 0, 0, &threshold);
 829         profile_get_boolean(ctx->profile, "scratch_files",
 830                             "icount", 0, 1, &enable);
 831
 832         retval = ext2fs_get_num_dirs(ctx->fs, &num_dirs);
 833         if (retval)
 834                 num_dirs = 1024;        /* Guess */
 835
 836         if (enable && tdb_dir && !access(tdb_dir, W_OK) &&
 837             (!threshold || num_dirs > threshold)) {
 838                 retval = ext2fs_create_icount_tdb(ctx->fs, tdb_dir,
 839                                                   flags, ret);
 840                 if (retval == 0)
 841                         return 0;
 842         }
 843         e2fsck_set_bitmap_type(ctx->fs, EXT2FS_BMAP64_RBTREE, icount_name,
 844                                &save_type);
 845         if (ctx->options & E2F_OPT_ICOUNT_FULLMAP)
 846                 flags |= EXT2_ICOUNT_OPT_FULLMAP;
 847         retval = ext2fs_create_icount2(ctx->fs, flags, 0, hint, ret);
 848         ctx->fs->default_bitmap_type = save_type;
 849         return retval;
 850 }
 851
 852 static errcode_t recheck_bad_inode_checksum(ext2_filsys fs, ext2_ino_t ino,
 853                                             e2fsck_t ctx,
 854                                             struct problem_context *pctx)
 855 {
 856         errcode_t retval;
 857         struct ext2_inode_large inode;
 858
 859         /*
 860          * Reread inode.  If we don't see checksum error, then this inode
 861          * has been fixed elsewhere.
 862          */
 863         ctx->stashed_ino = 0;
 864         retval = ext2fs_read_inode_full(fs, ino, (struct ext2_inode *)&inode,
 865                                         sizeof(inode));
 866         if (retval && retval != EXT2_ET_INODE_CSUM_INVALID)
 867                 return retval;
 868         if (!retval)
 869                 return 0;
 870
 871         /*
 872          * Checksum still doesn't match.  That implies that the inode passes
 873          * all the sanity checks, so maybe the checksum is simply corrupt.
 874          * See if the user will go for fixing that.
 875          */
 876         if (!fix_problem(ctx, PR_1_INODE_ONLY_CSUM_INVALID, pctx))
 877                 return 0;
 878
 879         retval = ext2fs_write_inode_full(fs, ino, (struct ext2_inode *)&inode,
 880                                          sizeof(inode));
 881         return retval;
 882 }
 883
 884 static void reserve_block_for_root_repair(e2fsck_t ctx)
 885 {
 886         blk64_t         blk = 0;
 887         errcode_t       err;
 888         ext2_filsys     fs = ctx->fs;
 889
 890         ctx->root_repair_block = 0;
 891         if (ext2fs_test_inode_bitmap2(ctx->inode_used_map, EXT2_ROOT_INO))
 892                 return;
 893
 894         err = ext2fs_new_block2(fs, 0, ctx->block_found_map, &blk);
 895         if (err)
 896                 return;
 897         ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
 898         ctx->root_repair_block = blk;
 899 }
 900
 901 static void reserve_block_for_lnf_repair(e2fsck_t ctx)
 902 {
 903         blk64_t         blk = 0;
 904         errcode_t       err;
 905         ext2_filsys     fs = ctx->fs;
 906         static const char name[] = "lost+found";
 907         ext2_ino_t      ino;
 908
 909         ctx->lnf_repair_block = 0;
 910         if (!ext2fs_lookup(fs, EXT2_ROOT_INO, name, sizeof(name)-1, 0, &ino))
 911                 return;
 912
 913         err = ext2fs_new_block2(fs, 0, ctx->block_found_map, &blk);
 914         if (err)
 915                 return;
 916         ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
 917         ctx->lnf_repair_block = blk;
 918 }
 919
 920 static errcode_t get_inline_data_ea_size(ext2_filsys fs, ext2_ino_t ino,
 921                                          struct ext2_inode *inode,
 922                                          size_t *sz)
 923 {
 924         void *p;
 925         struct ext2_xattr_handle *handle;
 926         errcode_t retval;
 927
 928         retval = ext2fs_xattrs_open(fs, ino, &handle);
 929         if (retval)
 930                 return retval;
 931
 932         retval = ext2fs_xattrs_read_inode(handle,
 933                                           (struct ext2_inode_large *)inode);
 934         if (retval)
 935                 goto err;
 936
 937         retval = ext2fs_xattr_get(handle, "system.data", &p, sz);
 938         if (retval)
 939                 goto err;
 940         ext2fs_free_mem(&p);
 941 err:
 942         (void) ext2fs_xattrs_close(&handle);
 943         return retval;
 944 }
 945
 946 static void finish_processing_inode(e2fsck_t ctx, ext2_ino_t ino,
 947                                     struct problem_context *pctx,
 948                                     int failed_csum)
 949 {
 950         if (!failed_csum)
 951                 return;
 952
 953         /*
 954          * If the inode failed the checksum and the user didn't
 955          * clear the inode, test the checksum again -- if it still
 956          * fails, ask the user if the checksum should be corrected.
 957          */
 958         pctx->errcode = recheck_bad_inode_checksum(ctx->fs, ino, ctx, pctx);
 959         if (pctx->errcode)
 960                 ctx->flags |= E2F_FLAG_ABORT;
 961 }
 962 #define FINISH_INODE_LOOP(ctx, ino, pctx, failed_csum) \
 963         do { \
 964                 finish_processing_inode((ctx), (ino), (pctx), (failed_csum)); \
 965                 if ((ctx)->flags & E2F_FLAG_ABORT) \
 966                         return; \
 967         } while (0)
 968
 969 static int could_be_block_map(ext2_filsys fs, struct ext2_inode *inode)
 970 {
 971         __u32 x;
 972         int i;
 973
 974         for (i = 0; i < EXT2_N_BLOCKS; i++) {
 975                 x = inode->i_block[i];
 976 #ifdef WORDS_BIGENDIAN
 977                 x = ext2fs_swab32(x);
 978 #endif
 979                 if (x >= ext2fs_blocks_count(fs->super))
 980                         return 0;
 981         }
 982
 983         return 1;
 984 }
 985
 986 /*
 987  * Figure out what to do with an inode that has both extents and inline data
 988  * inode flags set.  Returns -1 if we decide to erase the inode, 0 otherwise.
 989  */
 990 static int fix_inline_data_extents_file(e2fsck_t ctx,
 991                                         ext2_ino_t ino,
 992                                         struct ext2_inode *inode,
 993                                         int inode_size,
 994                                         struct problem_context *pctx)
 995 {
 996         size_t max_inline_ea_size;
 997         ext2_filsys fs = ctx->fs;
 998         int dirty = 0;
 999
1000         /* Both feature flags not set?  Just run the regular checks */
1001         if (!ext2fs_has_feature_extents(fs->super) &&
1002             !ext2fs_has_feature_inline_data(fs->super))
1003                 return 0;
1004
1005         /* Clear both flags if it's a special file */
1006         if (LINUX_S_ISCHR(inode->i_mode) ||
1007             LINUX_S_ISBLK(inode->i_mode) ||
1008             LINUX_S_ISFIFO(inode->i_mode) ||
1009             LINUX_S_ISSOCK(inode->i_mode)) {
1010                 check_extents_inlinedata(ctx, pctx);
1011                 return 0;
1012         }
1013
1014         /* If it looks like an extent tree, try to clear inlinedata */
1015         if (ext2fs_extent_header_verify(inode->i_block,
1016                                  sizeof(inode->i_block)) == 0 &&
1017             fix_problem(ctx, PR_1_CLEAR_INLINE_DATA_FOR_EXTENT, pctx)) {
1018                 inode->i_flags &= ~EXT4_INLINE_DATA_FL;
1019                 dirty = 1;
1020                 goto out;
1021         }
1022
1023         /* If it looks short enough to be inline data, try to clear extents */
1024         if (inode_size > EXT2_GOOD_OLD_INODE_SIZE)
1025                 max_inline_ea_size = inode_size -
1026                                      (EXT2_GOOD_OLD_INODE_SIZE +
1027                                       ((struct ext2_inode_large *)inode)->i_extra_isize);
1028         else
1029                 max_inline_ea_size = 0;
1030         if (EXT2_I_SIZE(inode) <
1031             EXT4_MIN_INLINE_DATA_SIZE + max_inline_ea_size &&
1032             fix_problem(ctx, PR_1_CLEAR_EXTENT_FOR_INLINE_DATA, pctx)) {
1033                 inode->i_flags &= ~EXT4_EXTENTS_FL;
1034                 dirty = 1;
1035                 goto out;
1036         }
1037
1038         /*
1039          * Too big for inline data, but no evidence of extent tree -
1040          * maybe it's a block map file?  If the mappings all look valid?
1041          */
1042         if (could_be_block_map(fs, inode) &&
1043             fix_problem(ctx, PR_1_CLEAR_EXTENT_INLINE_DATA_FLAGS, pctx)) {
1044 #ifdef WORDS_BIGENDIAN
1045                 int i;
1046
1047                 for (i = 0; i < EXT2_N_BLOCKS; i++)
1048                         inode->i_block[i] = ext2fs_swab32(inode->i_block[i]);
1049 #endif
1050
1051                 inode->i_flags &= ~(EXT4_EXTENTS_FL | EXT4_INLINE_DATA_FL);
1052                 dirty = 1;
1053                 goto out;
1054         }
1055
1056         /* Oh well, just clear the busted inode. */
1057         if (fix_problem(ctx, PR_1_CLEAR_EXTENT_INLINE_DATA_INODE, pctx)) {
1058                 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1059                 return -1;
1060         }
1061
1062 out:
1063         if (dirty)
1064                 e2fsck_write_inode(ctx, ino, inode, "pass1");
1065
1066         return 0;
1067 }
1068
1069 static void pass1_readahead(e2fsck_t ctx, dgrp_t *group, ext2_ino_t *next_ino)
1070 {
1071         ext2_ino_t inodes_in_group = 0, inodes_per_block, inodes_per_buffer;
1072         dgrp_t start = *group, grp;
1073         blk64_t blocks_to_read = 0;
1074         errcode_t err = EXT2_ET_INVALID_ARGUMENT;
1075
1076         if (ctx->readahead_kb == 0)
1077                 goto out;
1078
1079         /* Keep iterating groups until we have enough to readahead */
1080         inodes_per_block = EXT2_INODES_PER_BLOCK(ctx->fs->super);
1081         for (grp = start; grp < ctx->fs->group_desc_count; grp++) {
1082                 if (ext2fs_bg_flags_test(ctx->fs, grp, EXT2_BG_INODE_UNINIT))
1083                         continue;
1084                 inodes_in_group = ctx->fs->super->s_inodes_per_group -
1085                                         ext2fs_bg_itable_unused(ctx->fs, grp);
1086                 blocks_to_read += (inodes_in_group + inodes_per_block - 1) /
1087                                         inodes_per_block;
1088                 if (blocks_to_read * ctx->fs->blocksize >
1089                     ctx->readahead_kb * 1024)
1090                         break;
1091         }
1092
1093         err = e2fsck_readahead(ctx->fs, E2FSCK_READA_ITABLE, start,
1094                                grp - start + 1);
1095         if (err == EAGAIN) {
1096                 ctx->readahead_kb /= 2;
1097                 err = 0;
1098         }
1099
1100 out:
1101         if (err) {
1102                 /* Error; disable itable readahead */
1103                 *group = ctx->fs->group_desc_count;
1104                 *next_ino = ctx->fs->super->s_inodes_count;
1105         } else {
1106                 /*
1107                  * Don't do more readahead until we've reached the first inode
1108                  * of the last inode scan buffer block for the last group.
1109                  */
1110                 *group = grp + 1;
1111                 inodes_per_buffer = (ctx->inode_buffer_blocks ?
1112                                      ctx->inode_buffer_blocks :
1113                                      EXT2_INODE_SCAN_DEFAULT_BUFFER_BLOCKS) *
1114                                     ctx->fs->blocksize /
1115                                     EXT2_INODE_SIZE(ctx->fs->super);
1116                 inodes_in_group--;
1117                 *next_ino = inodes_in_group -
1118                             (inodes_in_group % inodes_per_buffer) + 1 +
1119                             (grp * ctx->fs->super->s_inodes_per_group);
1120         }
1121 }
1122
1123 /*
1124  * Check if the passed ino is one of the used superblock quota inodes.
1125  *
1126  * Before the quota inodes were journaled, older superblock quota inodes
1127  * were just regular files in the filesystem and not reserved inodes.  This
1128  * checks if the passed ino is one of the s_*_quota_inum superblock fields,
1129  * which may not always be the same as the EXT4_*_QUOTA_INO fields.
1130  */
1131 static int quota_inum_is_super(struct ext2_super_block *sb, ext2_ino_t ino)
1132 {
1133         enum quota_type qtype;
1134
1135         for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1136                 if (*quota_sb_inump(sb, qtype) == ino)
1137                         return 1;
1138
1139         return 0;
1140 }
1141
1142 /*
1143  * Check if the passed ino is one of the reserved quota inodes.
1144  * This checks if the inode number is one of the reserved EXT4_*_QUOTA_INO
1145  * inodes.  These inodes may or may not be in use by the quota feature.
1146  */
1147 static int quota_inum_is_reserved(ext2_filsys fs, ext2_ino_t ino)
1148 {
1149         enum quota_type qtype;
1150
1151         for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1152                 if (quota_type2inum(qtype, fs->super) == ino)
1153                         return 1;
1154
1155         return 0;
1156 }
1157
1158 void e2fsck_pass1(e2fsck_t ctx)
1159 {
1160         int     i;
1161         __u64   max_sizes;
1162         ext2_filsys fs = ctx->fs;
1163         ext2_ino_t      ino = 0;
1164         struct ext2_inode *inode = NULL;
1165         ext2_inode_scan scan = NULL;
1166         char            *block_buf = NULL;
1167 #ifdef RESOURCE_TRACK
1168         struct resource_track   rtrack;
1169 #endif
1170         unsigned char   frag, fsize;
1171         struct          problem_context pctx;
1172         struct          scan_callback_struct scan_struct;
1173         struct ext2_super_block *sb = ctx->fs->super;
1174         const char      *old_op;
1175         const char      *eop_next_inode = _("getting next inode from scan");
1176         int             imagic_fs, extent_fs, inlinedata_fs, casefold_fs;
1177         int             low_dtime_check = 1;
1178         unsigned int    inode_size = EXT2_INODE_SIZE(fs->super);
1179         unsigned int    bufsize;
1180         int             failed_csum = 0;
1181         ext2_ino_t      ino_threshold = 0;
1182         dgrp_t          ra_group = 0;
1183         struct ea_quota ea_ibody_quota;
1184         time_t          tm;
1185
1186         init_resource_track(&rtrack, ctx->fs->io);
1187         clear_problem_context(&pctx);
1188
1189         /* If we can do readahead, figure out how many groups to pull in. */
1190         if (!e2fsck_can_readahead(ctx->fs))
1191                 ctx->readahead_kb = 0;
1192         else if (ctx->readahead_kb == ~0ULL)
1193                 ctx->readahead_kb = e2fsck_guess_readahead(ctx->fs);
1194         pass1_readahead(ctx, &ra_group, &ino_threshold);
1195
1196         if (!(ctx->options & E2F_OPT_PREEN))
1197                 fix_problem(ctx, PR_1_PASS_HEADER, &pctx);
1198
1199         if (ext2fs_has_feature_dir_index(fs->super) &&
1200             !(ctx->options & E2F_OPT_NO)) {
1201                 if (ext2fs_u32_list_create(&ctx->dirs_to_hash, 50))
1202                         ctx->dirs_to_hash = 0;
1203         }
1204
1205 #ifdef MTRACE
1206         mtrace_print("Pass 1");
1207 #endif
1208
1209 #define EXT2_BPP(bits) (1ULL << ((bits) - 2))
1210
1211         for (i = EXT2_MIN_BLOCK_LOG_SIZE; i <= EXT2_MAX_BLOCK_LOG_SIZE; i++) {
1212                 max_sizes = EXT2_NDIR_BLOCKS + EXT2_BPP(i);
1213                 max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i);
1214                 max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i) * EXT2_BPP(i);
1215                 max_sizes = (max_sizes * (1UL << i));
1216                 ext2_max_sizes[i - EXT2_MIN_BLOCK_LOG_SIZE] = max_sizes;
1217         }
1218 #undef EXT2_BPP
1219
1220         imagic_fs = ext2fs_has_feature_imagic_inodes(sb);
1221         extent_fs = ext2fs_has_feature_extents(sb);
1222         inlinedata_fs = ext2fs_has_feature_inline_data(sb);
1223         casefold_fs = ext2fs_has_feature_casefold(sb);
1224
1225         /*
1226          * Allocate bitmaps structures
1227          */
1228         pctx.errcode = e2fsck_allocate_inode_bitmap(fs, _("in-use inode map"),
1229                                                     EXT2FS_BMAP64_RBTREE,
1230                                                     "inode_used_map",
1231                                                     &ctx->inode_used_map);
1232         if (pctx.errcode) {
1233                 pctx.num = 1;
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                         _("directory inode map"),
1240                         EXT2FS_BMAP64_AUTODIR,
1241                         "inode_dir_map", &ctx->inode_dir_map);
1242         if (pctx.errcode) {
1243                 pctx.num = 2;
1244                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1245                 ctx->flags |= E2F_FLAG_ABORT;
1246                 return;
1247         }
1248         pctx.errcode = e2fsck_allocate_inode_bitmap(fs,
1249                         _("regular file inode map"), EXT2FS_BMAP64_RBTREE,
1250                         "inode_reg_map", &ctx->inode_reg_map);
1251         if (pctx.errcode) {
1252                 pctx.num = 6;
1253                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1254                 ctx->flags |= E2F_FLAG_ABORT;
1255                 return;
1256         }
1257         pctx.errcode = e2fsck_allocate_subcluster_bitmap(fs,
1258                         _("in-use block map"), EXT2FS_BMAP64_RBTREE,
1259                         "block_found_map", &ctx->block_found_map);
1260         if (pctx.errcode) {
1261                 pctx.num = 1;
1262                 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
1263                 ctx->flags |= E2F_FLAG_ABORT;
1264                 return;
1265         }
1266         pctx.errcode = e2fsck_allocate_block_bitmap(fs,
1267                         _("metadata block map"), EXT2FS_BMAP64_RBTREE,
1268                         "block_metadata_map", &ctx->block_metadata_map);
1269         if (pctx.errcode) {
1270                 pctx.num = 1;
1271                 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
1272                 ctx->flags |= E2F_FLAG_ABORT;
1273                 return;
1274         }
1275         if (casefold_fs) {
1276                 pctx.errcode =
1277                         e2fsck_allocate_inode_bitmap(fs,
1278                                                      _("inode casefold map"),
1279                                                      EXT2FS_BMAP64_RBTREE,
1280                                                      "inode_casefold_map",
1281                                                      &ctx->inode_casefold_map);
1282                 if (pctx.errcode) {
1283                         pctx.num = 1;
1284                         fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1285                         ctx->flags |= E2F_FLAG_ABORT;
1286                         return;
1287                 }
1288         }
1289         pctx.errcode = e2fsck_setup_icount(ctx, "inode_link_info", 0, NULL,
1290                                            &ctx->inode_link_info);
1291         if (pctx.errcode) {
1292                 fix_problem(ctx, PR_1_ALLOCATE_ICOUNT, &pctx);
1293                 ctx->flags |= E2F_FLAG_ABORT;
1294                 return;
1295         }
1296         bufsize = inode_size;
1297         if (bufsize < sizeof(struct ext2_inode_large))
1298                 bufsize = sizeof(struct ext2_inode_large);
1299         inode = (struct ext2_inode *)
1300                 e2fsck_allocate_memory(ctx, bufsize, "scratch inode");
1301
1302         inodes_to_process = (struct process_inode_block *)
1303                 e2fsck_allocate_memory(ctx,
1304                                        (ctx->process_inode_size *
1305                                         sizeof(struct process_inode_block)),
1306                                        "array of inodes to process");
1307         process_inode_count = 0;
1308
1309         pctx.errcode = ext2fs_init_dblist(fs, 0);
1310         if (pctx.errcode) {
1311                 fix_problem(ctx, PR_1_ALLOCATE_DBCOUNT, &pctx);
1312                 ctx->flags |= E2F_FLAG_ABORT;
1313                 goto endit;
1314         }
1315
1316         /*
1317          * If the last orphan field is set, clear it, since the pass1
1318          * processing will automatically find and clear the orphans.
1319          * In the future, we may want to try using the last_orphan
1320          * linked list ourselves, but for now, we clear it so that the
1321          * ext3 mount code won't get confused.
1322          */
1323         if (!(ctx->options & E2F_OPT_READONLY)) {
1324                 if (fs->super->s_last_orphan) {
1325                         fs->super->s_last_orphan = 0;
1326                         ext2fs_mark_super_dirty(fs);
1327                 }
1328         }
1329
1330         mark_table_blocks(ctx);
1331         pctx.errcode = ext2fs_convert_subcluster_bitmap(fs,
1332                                                 &ctx->block_found_map);
1333         if (pctx.errcode) {
1334                 fix_problem(ctx, PR_1_CONVERT_SUBCLUSTER, &pctx);
1335                 ctx->flags |= E2F_FLAG_ABORT;
1336                 goto endit;
1337         }
1338         block_buf = (char *) e2fsck_allocate_memory(ctx, fs->blocksize * 3,
1339                                                     "block iterate buffer");
1340         if (EXT2_INODE_SIZE(fs->super) == EXT2_GOOD_OLD_INODE_SIZE)
1341                 e2fsck_use_inode_shortcuts(ctx, 1);
1342         e2fsck_intercept_block_allocations(ctx);
1343         old_op = ehandler_operation(_("opening inode scan"));
1344         pctx.errcode = ext2fs_open_inode_scan(fs, ctx->inode_buffer_blocks,
1345                                               &scan);
1346         ehandler_operation(old_op);
1347         if (pctx.errcode) {
1348                 fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx);
1349                 ctx->flags |= E2F_FLAG_ABORT;
1350                 goto endit;
1351         }
1352         ext2fs_inode_scan_flags(scan, EXT2_SF_SKIP_MISSING_ITABLE |
1353                                       EXT2_SF_WARN_GARBAGE_INODES, 0);
1354         ctx->stashed_inode = inode;
1355         scan_struct.ctx = ctx;
1356         scan_struct.block_buf = block_buf;
1357         ext2fs_set_inode_callback(scan, scan_callback, &scan_struct);
1358         if (ctx->progress && ((ctx->progress)(ctx, 1, 0,
1359                                               ctx->fs->group_desc_count)))
1360                 goto endit;
1361
1362         if (((tm = ext2fs_get_tstamp(fs->super, s_wtime)) &&
1363              tm < fs->super->s_inodes_count) ||
1364             ((tm = ext2fs_get_tstamp(fs->super, s_mtime)) &&
1365              tm < fs->super->s_inodes_count) ||
1366             ((tm = ext2fs_get_tstamp(fs->super, s_mkfs_time)) &&
1367              tm < fs->super->s_inodes_count))
1368                 low_dtime_check = 0;
1369
1370         if (ext2fs_has_feature_mmp(fs->super) &&
1371             fs->super->s_mmp_block > fs->super->s_first_data_block &&
1372             fs->super->s_mmp_block < ext2fs_blocks_count(fs->super))
1373                 ext2fs_mark_block_bitmap2(ctx->block_found_map,
1374                                           fs->super->s_mmp_block);
1375
1376         /* Set up ctx->lost_and_found if possible */
1377         (void) e2fsck_get_lost_and_found(ctx, 0);
1378
1379         while (1) {
1380                 if (ino % (fs->super->s_inodes_per_group * 4) == 1) {
1381                         if (e2fsck_mmp_update(fs))
1382                                 fatal_error(ctx, 0);
1383                 }
1384                 old_op = ehandler_operation(eop_next_inode);
1385                 pctx.errcode = ext2fs_get_next_inode_full(scan, &ino,
1386                                                           inode, inode_size);
1387                 if (ino > ino_threshold)
1388                         pass1_readahead(ctx, &ra_group, &ino_threshold);
1389                 ehandler_operation(old_op);
1390                 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1391                         goto endit;
1392                 if (pctx.errcode == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE) {
1393                         /*
1394                          * If badblocks says badblocks is bad, offer to clear
1395                          * the list, update the in-core bb list, and restart
1396                          * the inode scan.
1397                          */
1398                         if (ino == EXT2_BAD_INO &&
1399                             fix_problem(ctx, PR_1_BADBLOCKS_IN_BADBLOCKS,
1400                                         &pctx)) {
1401                                 errcode_t err;
1402
1403                                 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1404                                 ext2fs_badblocks_list_free(ctx->fs->badblocks);
1405                                 ctx->fs->badblocks = NULL;
1406                                 err = ext2fs_read_bb_inode(ctx->fs,
1407                                                         &ctx->fs->badblocks);
1408                                 if (err) {
1409                                         fix_problem(ctx, PR_1_ISCAN_ERROR,
1410                                                     &pctx);
1411                                         ctx->flags |= E2F_FLAG_ABORT;
1412                                 } else
1413                                         ctx->flags |= E2F_FLAG_RESTART;
1414                                 goto endit;
1415                         }
1416                         if (!ctx->inode_bb_map)
1417                                 alloc_bb_map(ctx);
1418                         ext2fs_mark_inode_bitmap2(ctx->inode_bb_map, ino);
1419                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1420                         continue;
1421                 }
1422                 if (pctx.errcode &&
1423                     pctx.errcode != EXT2_ET_INODE_CSUM_INVALID &&
1424                     pctx.errcode != EXT2_ET_INODE_IS_GARBAGE) {
1425                         fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx);
1426                         ctx->flags |= E2F_FLAG_ABORT;
1427                         goto endit;
1428                 }
1429                 if (!ino)
1430                         break;
1431                 pctx.ino = ino;
1432                 pctx.inode = inode;
1433                 ctx->stashed_ino = ino;
1434
1435                 /* Clear trashed inode? */
1436                 if (pctx.errcode == EXT2_ET_INODE_IS_GARBAGE &&
1437                     inode->i_links_count > 0 &&
1438                     fix_problem(ctx, PR_1_INODE_IS_GARBAGE, &pctx)) {
1439                         pctx.errcode = 0;
1440                         e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1441                 }
1442                 failed_csum = pctx.errcode != 0;
1443
1444                 /*
1445                  * Check for inodes who might have been part of the
1446                  * orphaned list linked list.  They should have gotten
1447                  * dealt with by now, unless the list had somehow been
1448                  * corrupted.
1449                  *
1450                  * FIXME: In the future, inodes which are still in use
1451                  * (and which are therefore) pending truncation should
1452                  * be handled specially.  Right now we just clear the
1453                  * dtime field, and the normal e2fsck handling of
1454                  * inodes where i_size and the inode blocks are
1455                  * inconsistent is to fix i_size, instead of releasing
1456                  * the extra blocks.  This won't catch the inodes that
1457                  * was at the end of the orphan list, but it's better
1458                  * than nothing.  The right answer is that there
1459                  * shouldn't be any bugs in the orphan list handling.  :-)
1460                  */
1461                 if (inode->i_dtime && low_dtime_check &&
1462                     inode->i_dtime < ctx->fs->super->s_inodes_count) {
1463                         if (fix_problem(ctx, PR_1_LOW_DTIME, &pctx)) {
1464                                 inode->i_dtime = inode->i_links_count ?
1465                                         0 : ctx->now;
1466                                 e2fsck_write_inode(ctx, ino, inode,
1467                                                    "pass1");
1468                                 failed_csum = 0;
1469                         }
1470                 }
1471
1472                 if (inode->i_links_count) {
1473                         pctx.errcode = ext2fs_icount_store(ctx->inode_link_info,
1474                                            ino, inode->i_links_count);
1475                         if (pctx.errcode) {
1476                                 pctx.num = inode->i_links_count;
1477                                 fix_problem(ctx, PR_1_ICOUNT_STORE, &pctx);
1478                                 ctx->flags |= E2F_FLAG_ABORT;
1479                                 goto endit;
1480                         }
1481                 } else if ((ino >= EXT2_FIRST_INODE(fs->super)) &&
1482                            !quota_inum_is_reserved(fs, ino)) {
1483                         if (!inode->i_dtime && inode->i_mode) {
1484                                 if (fix_problem(ctx,
1485                                             PR_1_ZERO_DTIME, &pctx)) {
1486                                         ext2fs_set_dtime(fs, inode);
1487                                         e2fsck_write_inode(ctx, ino, inode,
1488                                                            "pass1");
1489                                         failed_csum = 0;
1490                                 }
1491                         }
1492                         FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1493                         continue;
1494                 }
1495
1496                 if ((inode->i_flags & EXT4_CASEFOLD_FL) &&
1497                     ((!LINUX_S_ISDIR(inode->i_mode) &&
1498                       fix_problem(ctx, PR_1_CASEFOLD_NONDIR, &pctx)) ||
1499                      (!casefold_fs &&
1500                       fix_problem(ctx, PR_1_CASEFOLD_FEATURE, &pctx)))) {
1501                         inode->i_flags &= ~EXT4_CASEFOLD_FL;
1502                         e2fsck_write_inode(ctx, ino, inode, "pass1");
1503                 }
1504
1505                 /* Conflicting inlinedata/extents inode flags? */
1506                 if ((inode->i_flags & EXT4_INLINE_DATA_FL) &&
1507                     (inode->i_flags & EXT4_EXTENTS_FL)) {
1508                         int res = fix_inline_data_extents_file(ctx, ino, inode,
1509                                                                inode_size,
1510                                                                &pctx);
1511                         if (res < 0) {
1512                                 /* skip FINISH_INODE_LOOP */
1513                                 continue;
1514                         }
1515                 }
1516
1517                 /* Test for incorrect inline_data flags settings. */
1518                 if ((inode->i_flags & EXT4_INLINE_DATA_FL) && !inlinedata_fs &&
1519                     (ino >= EXT2_FIRST_INODE(fs->super))) {
1520                         size_t size = 0;
1521
1522                         pctx.errcode = get_inline_data_ea_size(fs, ino, inode,
1523                                                                &size);
1524                         if (!pctx.errcode &&
1525                             fix_problem(ctx, PR_1_INLINE_DATA_FEATURE, &pctx)) {
1526                                 ext2fs_set_feature_inline_data(sb);
1527                                 ext2fs_mark_super_dirty(fs);
1528                                 inlinedata_fs = 1;
1529                         } else if (fix_problem(ctx, PR_1_INLINE_DATA_SET, &pctx)) {
1530                                 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1531                                 /* skip FINISH_INODE_LOOP */
1532                                 continue;
1533                         }
1534                 }
1535
1536                 /* Test for inline data flag but no attr */
1537                 if ((inode->i_flags & EXT4_INLINE_DATA_FL) && inlinedata_fs &&
1538                     (ino >= EXT2_FIRST_INODE(fs->super))) {
1539                         size_t size = 0;
1540                         errcode_t err;
1541                         int flags;
1542
1543                         flags = fs->flags;
1544                         if (failed_csum)
1545                                 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
1546                         err = get_inline_data_ea_size(fs, ino, inode, &size);
1547                         fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
1548                                     (fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
1549
1550                         switch (err) {
1551                         case 0:
1552                                 /* Everything is awesome... */
1553                                 break;
1554                         case EXT2_ET_BAD_EA_BLOCK_NUM:
1555                         case EXT2_ET_BAD_EA_HASH:
1556                         case EXT2_ET_BAD_EA_HEADER:
1557                         case EXT2_ET_EA_BAD_NAME_LEN:
1558                         case EXT2_ET_EA_BAD_VALUE_SIZE:
1559                         case EXT2_ET_EA_KEY_NOT_FOUND:
1560                         case EXT2_ET_EA_NO_SPACE:
1561                         case EXT2_ET_MISSING_EA_FEATURE:
1562                         case EXT2_ET_INLINE_DATA_CANT_ITERATE:
1563                         case EXT2_ET_INLINE_DATA_NO_BLOCK:
1564                         case EXT2_ET_INLINE_DATA_NO_SPACE:
1565                         case EXT2_ET_NO_INLINE_DATA:
1566                         case EXT2_ET_EXT_ATTR_CSUM_INVALID:
1567                         case EXT2_ET_EA_BAD_VALUE_OFFSET:
1568                         case EXT2_ET_EA_INODE_CORRUPTED:
1569                                 /* broken EA or no system.data EA; truncate */
1570                                 if (fix_problem(ctx, PR_1_INLINE_DATA_NO_ATTR,
1571                                                 &pctx)) {
1572                                         err = ext2fs_inode_size_set(fs, inode, 0);
1573                                         if (err) {
1574                                                 pctx.errcode = err;
1575                                                 ctx->flags |= E2F_FLAG_ABORT;
1576                                                 goto endit;
1577                                         }
1578                                         inode->i_flags &= ~EXT4_INLINE_DATA_FL;
1579                                         memset(&inode->i_block, 0,
1580                                                sizeof(inode->i_block));
1581                                         e2fsck_write_inode(ctx, ino, inode,
1582                                                            "pass1");
1583                                         failed_csum = 0;
1584                                 }
1585                                 break;
1586                         default:
1587                                 /* Some other kind of non-xattr error? */
1588                                 pctx.errcode = err;
1589                                 ctx->flags |= E2F_FLAG_ABORT;
1590                                 goto endit;
1591                         }
1592                 }
1593
1594                 /*
1595                  * Test for incorrect extent flag settings.
1596                  *
1597                  * On big-endian machines we must be careful:
1598                  * When the inode is read, the i_block array is not swapped
1599                  * if the extent flag is set.  Therefore if we are testing
1600                  * for or fixing a wrongly-set flag, we must potentially
1601                  * (un)swap before testing, or after fixing.
1602                  */
1603
1604                 /*
1605                  * In this case the extents flag was set when read, so
1606                  * extent_header_verify is ok.  If the inode is cleared,
1607                  * no need to swap... so no extra swapping here.
1608                  */
1609                 if ((inode->i_flags & EXT4_EXTENTS_FL) && !extent_fs &&
1610                     (inode->i_links_count || (ino == EXT2_BAD_INO) ||
1611                      (ino == EXT2_ROOT_INO) || (ino == EXT2_JOURNAL_INO))) {
1612                         if ((ext2fs_extent_header_verify(inode->i_block,
1613                                                  sizeof(inode->i_block)) == 0) &&
1614                             fix_problem(ctx, PR_1_EXTENT_FEATURE, &pctx)) {
1615                                 ext2fs_set_feature_extents(sb);
1616                                 ext2fs_mark_super_dirty(fs);
1617                                 extent_fs = 1;
1618                         } else if (fix_problem(ctx, PR_1_EXTENTS_SET, &pctx)) {
1619                         clear_inode:
1620                                 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1621                                 if (ino == EXT2_BAD_INO)
1622                                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map,
1623                                                                  ino);
1624                                 /* skip FINISH_INODE_LOOP */
1625                                 continue;
1626                         }
1627                 }
1628
1629                 /*
1630                  * For big-endian machines:
1631                  * If the inode didn't have the extents flag set when it
1632                  * was read, then the i_blocks array was swapped.  To test
1633                  * as an extents header, we must swap it back first.
1634                  * IF we then set the extents flag, the entire i_block
1635                  * array must be un/re-swapped to make it proper extents data.
1636                  */
1637                 if (extent_fs && !(inode->i_flags & EXT4_EXTENTS_FL) &&
1638                     (inode->i_links_count || (ino == EXT2_BAD_INO) ||
1639                      (ino == EXT2_ROOT_INO) || (ino == EXT2_JOURNAL_INO)) &&
1640                     (LINUX_S_ISREG(inode->i_mode) ||
1641                      LINUX_S_ISDIR(inode->i_mode))) {
1642                         void *ehp;
1643 #ifdef WORDS_BIGENDIAN
1644                         __u32 tmp_block[EXT2_N_BLOCKS];
1645
1646                         for (i = 0; i < EXT2_N_BLOCKS; i++)
1647                                 tmp_block[i] = ext2fs_swab32(inode->i_block[i]);
1648                         ehp = tmp_block;
1649 #else
1650                         ehp = inode->i_block;
1651 #endif
1652                         if ((ext2fs_extent_header_verify(ehp,
1653                                          sizeof(inode->i_block)) == 0) &&
1654                             (fix_problem(ctx, PR_1_UNSET_EXTENT_FL, &pctx))) {
1655                                 inode->i_flags |= EXT4_EXTENTS_FL;
1656 #ifdef WORDS_BIGENDIAN
1657                                 memcpy(inode->i_block, tmp_block,
1658                                        sizeof(inode->i_block));
1659 #endif
1660                                 e2fsck_write_inode(ctx, ino, inode, "pass1");
1661                                 failed_csum = 0;
1662                         }
1663                 }
1664
1665                 if (ino == EXT2_BAD_INO) {
1666                         struct process_block_struct pb;
1667
1668                         if ((failed_csum || inode->i_mode || inode->i_uid ||
1669                              inode->i_gid || inode->i_links_count ||
1670                              (inode->i_flags & EXT4_INLINE_DATA_FL) ||
1671                              inode->i_file_acl) &&
1672                             fix_problem(ctx, PR_1_INVALID_BAD_INODE, &pctx)) {
1673                                 memset(inode, 0, sizeof(struct ext2_inode));
1674                                 e2fsck_write_inode(ctx, ino, inode,
1675                                                    "clear bad inode");
1676                                 failed_csum = 0;
1677                         }
1678
1679                         pctx.errcode = ext2fs_copy_bitmap(ctx->block_found_map,
1680                                                           &pb.fs_meta_blocks);
1681                         if (pctx.errcode) {
1682                                 pctx.num = 4;
1683                                 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
1684                                 ctx->flags |= E2F_FLAG_ABORT;
1685                                 goto endit;
1686                         }
1687                         pb.ino = EXT2_BAD_INO;
1688                         pb.num_blocks = pb.last_block = 0;
1689                         pb.last_db_block = -1;
1690                         pb.num_illegal_blocks = 0;
1691                         pb.suppress = 0; pb.clear = 0; pb.is_dir = 0;
1692                         pb.is_reg = 0; pb.fragmented = 0; pb.bbcheck = 0;
1693                         pb.inode = inode;
1694                         pb.pctx = &pctx;
1695                         pb.ctx = ctx;
1696                         pctx.errcode = ext2fs_block_iterate3(fs, ino, 0,
1697                                      block_buf, process_bad_block, &pb);
1698                         ext2fs_free_block_bitmap(pb.fs_meta_blocks);
1699                         if (pctx.errcode) {
1700                                 fix_problem(ctx, PR_1_BLOCK_ITERATE, &pctx);
1701                                 ctx->flags |= E2F_FLAG_ABORT;
1702                                 goto endit;
1703                         }
1704                         if (pb.bbcheck)
1705                                 if (!fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK_PROMPT, &pctx)) {
1706                                 ctx->flags |= E2F_FLAG_ABORT;
1707                                 goto endit;
1708                         }
1709                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1710                         clear_problem_context(&pctx);
1711                         FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1712                         continue;
1713                 } else if (ino == EXT2_ROOT_INO) {
1714                         /*
1715                          * Make sure the root inode is a directory; if
1716                          * not, offer to clear it.  It will be
1717                          * regenerated in pass #3.
1718                          */
1719                         if (!LINUX_S_ISDIR(inode->i_mode)) {
1720                                 if (fix_problem(ctx, PR_1_ROOT_NO_DIR, &pctx))
1721                                         goto clear_inode;
1722                         }
1723                         /*
1724                          * If dtime is set, offer to clear it.  mke2fs
1725                          * version 0.2b created filesystems with the
1726                          * dtime field set for the root and lost+found
1727                          * directories.  We won't worry about
1728                          * /lost+found, since that can be regenerated
1729                          * easily.  But we will fix the root directory
1730                          * as a special case.
1731                          */
1732                         if (inode->i_dtime && inode->i_links_count) {
1733                                 if (fix_problem(ctx, PR_1_ROOT_DTIME, &pctx)) {
1734                                         inode->i_dtime = 0;
1735                                         e2fsck_write_inode(ctx, ino, inode,
1736                                                            "pass1");
1737                                         failed_csum = 0;
1738                                 }
1739                         }
1740                 } else if (ino == EXT2_JOURNAL_INO) {
1741                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1742                         if (fs->super->s_journal_inum == EXT2_JOURNAL_INO) {
1743                                 if (!LINUX_S_ISREG(inode->i_mode) &&
1744                                     fix_problem(ctx, PR_1_JOURNAL_BAD_MODE,
1745                                                 &pctx)) {
1746                                         inode->i_mode = LINUX_S_IFREG;
1747                                         e2fsck_write_inode(ctx, ino, inode,
1748                                                            "pass1");
1749                                         failed_csum = 0;
1750                                 }
1751                                 check_blocks(ctx, &pctx, block_buf, NULL);
1752                                 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1753                                 continue;
1754                         }
1755                         if ((inode->i_links_count ||
1756                              inode->i_blocks || inode->i_block[0]) &&
1757                             fix_problem(ctx, PR_1_JOURNAL_INODE_NOT_CLEAR,
1758                                         &pctx)) {
1759                                 memset(inode, 0, inode_size);
1760                                 ext2fs_icount_store(ctx->inode_link_info,
1761                                                     ino, 0);
1762                                 e2fsck_write_inode_full(ctx, ino, inode,
1763                                                         inode_size, "pass1");
1764                                 failed_csum = 0;
1765                         }
1766                 } else if (quota_inum_is_reserved(fs, ino)) {
1767                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1768                         if (ext2fs_has_feature_quota(fs->super) &&
1769                             quota_inum_is_super(fs->super, ino)) {
1770                                 if (!LINUX_S_ISREG(inode->i_mode) &&
1771                                     fix_problem(ctx, PR_1_QUOTA_BAD_MODE,
1772                                                         &pctx)) {
1773                                         inode->i_mode = LINUX_S_IFREG;
1774                                         e2fsck_write_inode(ctx, ino, inode,
1775                                                         "pass1");
1776                                         failed_csum = 0;
1777                                 }
1778                                 check_blocks(ctx, &pctx, block_buf, NULL);
1779                                 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1780                                 continue;
1781                         }
1782                         if ((inode->i_links_count ||
1783                              inode->i_blocks || inode->i_block[0]) &&
1784                             fix_problem(ctx, PR_1_QUOTA_INODE_NOT_CLEAR,
1785                                         &pctx)) {
1786                                 memset(inode, 0, inode_size);
1787                                 ext2fs_icount_store(ctx->inode_link_info,
1788                                                     ino, 0);
1789                                 e2fsck_write_inode_full(ctx, ino, inode,
1790                                                         inode_size, "pass1");
1791                                 failed_csum = 0;
1792                         }
1793                 } else if (ino == fs->super->s_orphan_file_inum) {
1794                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1795                         if (ext2fs_has_feature_orphan_file(fs->super)) {
1796                                 if (!LINUX_S_ISREG(inode->i_mode) &&
1797                                     fix_problem(ctx, PR_1_ORPHAN_FILE_BAD_MODE,
1798                                                 &pctx)) {
1799                                         inode->i_mode = LINUX_S_IFREG;
1800                                         e2fsck_write_inode(ctx, ino, inode,
1801                                                            "pass1");
1802                                         failed_csum = 0;
1803                                 }
1804                                 check_blocks(ctx, &pctx, block_buf, NULL);
1805                                 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1806                                 continue;
1807                         }
1808                         if ((inode->i_links_count ||
1809                              inode->i_blocks || inode->i_block[0]) &&
1810                             fix_problem(ctx, PR_1_ORPHAN_FILE_NOT_CLEAR,
1811                                         &pctx)) {
1812                                 memset(inode, 0, inode_size);
1813                                 ext2fs_icount_store(ctx->inode_link_info, ino,
1814                                                     0);
1815                                 e2fsck_write_inode_full(ctx, ino, inode,
1816                                                         inode_size, "pass1");
1817                                 failed_csum = 0;
1818                         }
1819                 } else if (ino < EXT2_FIRST_INODE(fs->super)) {
1820                         problem_t problem = 0;
1821
1822                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1823                         if (ino == EXT2_BOOT_LOADER_INO) {
1824                                 if (LINUX_S_ISDIR(inode->i_mode))
1825                                         problem = PR_1_RESERVED_BAD_MODE;
1826                         } else if (ino == EXT2_RESIZE_INO) {
1827                                 if (inode->i_mode &&
1828                                     !LINUX_S_ISREG(inode->i_mode))
1829                                         problem = PR_1_RESERVED_BAD_MODE;
1830                         } else {
1831                                 if (inode->i_mode != 0)
1832                                         problem = PR_1_RESERVED_BAD_MODE;
1833                         }
1834                         if (problem) {
1835                                 if (fix_problem(ctx, problem, &pctx)) {
1836                                         inode->i_mode = 0;
1837                                         e2fsck_write_inode(ctx, ino, inode,
1838                                                            "pass1");
1839                                         failed_csum = 0;
1840                                 }
1841                         }
1842                         check_blocks(ctx, &pctx, block_buf, NULL);
1843                         FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1844                         continue;
1845                 }
1846
1847                 if (!inode->i_links_count) {
1848                         FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1849                         continue;
1850                 }
1851                 /*
1852                  * n.b.  0.3c ext2fs code didn't clear i_links_count for
1853                  * deleted files.  Oops.
1854                  *
1855                  * Since all new ext2 implementations get this right,
1856                  * we now assume that the case of non-zero
1857                  * i_links_count and non-zero dtime means that we
1858                  * should keep the file, not delete it.
1859                  *
1860                  */
1861                 if (inode->i_dtime) {
1862                         if (fix_problem(ctx, PR_1_SET_DTIME, &pctx)) {
1863                                 inode->i_dtime = 0;
1864                                 e2fsck_write_inode(ctx, ino, inode, "pass1");
1865                                 failed_csum = 0;
1866                         }
1867                 }
1868
1869                 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1870                 switch (fs->super->s_creator_os) {
1871                     case EXT2_OS_HURD:
1872                         frag = inode->osd2.hurd2.h_i_frag;
1873                         fsize = inode->osd2.hurd2.h_i_fsize;
1874                         break;
1875                     default:
1876                         frag = fsize = 0;
1877                 }
1878
1879                 if (inode->i_faddr || frag || fsize ||
1880                     (!ext2fs_has_feature_largedir(fs->super) &&
1881                     (LINUX_S_ISDIR(inode->i_mode) && inode->i_size_high)))
1882                         mark_inode_bad(ctx, ino);
1883                 if ((fs->super->s_creator_os != EXT2_OS_HURD) &&
1884                     !ext2fs_has_feature_64bit(fs->super) &&
1885                     inode->osd2.linux2.l_i_file_acl_high != 0)
1886                         mark_inode_bad(ctx, ino);
1887                 if ((fs->super->s_creator_os != EXT2_OS_HURD) &&
1888                     !ext2fs_has_feature_huge_file(fs->super) &&
1889                     (inode->osd2.linux2.l_i_blocks_hi != 0))
1890                         mark_inode_bad(ctx, ino);
1891                 if (inode->i_flags & EXT2_IMAGIC_FL) {
1892                         if (imagic_fs) {
1893                                 if (!ctx->inode_imagic_map)
1894                                         alloc_imagic_map(ctx);
1895                                 ext2fs_mark_inode_bitmap2(ctx->inode_imagic_map,
1896                                                          ino);
1897                         } else {
1898                                 if (fix_problem(ctx, PR_1_SET_IMAGIC, &pctx)) {
1899                                         inode->i_flags &= ~EXT2_IMAGIC_FL;
1900                                         e2fsck_write_inode(ctx, ino,
1901                                                            inode, "pass1");
1902                                         failed_csum = 0;
1903                                 }
1904                         }
1905                 }
1906
1907                 check_inode_extra_space(ctx, &pctx, &ea_ibody_quota);
1908                 check_is_really_dir(ctx, &pctx, block_buf);
1909
1910                 /*
1911                  * ext2fs_inode_has_valid_blocks2 does not actually look
1912                  * at i_block[] values, so not endian-sensitive here.
1913                  */
1914                 if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL) &&
1915                     LINUX_S_ISLNK(inode->i_mode) &&
1916                     !ext2fs_inode_has_valid_blocks2(fs, inode) &&
1917                     fix_problem(ctx, PR_1_FAST_SYMLINK_EXTENT_FL, &pctx)) {
1918                         inode->i_flags &= ~EXT4_EXTENTS_FL;
1919                         e2fsck_write_inode(ctx, ino, inode, "pass1");
1920                         failed_csum = 0;
1921                 }
1922
1923                 if ((inode->i_flags & EXT4_ENCRYPT_FL) &&
1924                     add_encrypted_file(ctx, &pctx) < 0)
1925                         goto clear_inode;
1926
1927                 if (casefold_fs && inode->i_flags & EXT4_CASEFOLD_FL)
1928                         ext2fs_mark_inode_bitmap2(ctx->inode_casefold_map, ino);
1929
1930                 if (LINUX_S_ISDIR(inode->i_mode)) {
1931                         ext2fs_mark_inode_bitmap2(ctx->inode_dir_map, ino);
1932                         e2fsck_add_dir_info(ctx, ino, 0);
1933                         ctx->fs_directory_count++;
1934                         if (inode->i_flags & EXT4_CASEFOLD_FL)
1935                                 add_casefolded_dir(ctx, ino);
1936                 } else if (LINUX_S_ISREG (inode->i_mode)) {
1937                         ext2fs_mark_inode_bitmap2(ctx->inode_reg_map, ino);
1938                         ctx->fs_regular_count++;
1939                 } else if (LINUX_S_ISCHR (inode->i_mode) &&
1940                            e2fsck_pass1_check_device_inode(fs, inode)) {
1941                         check_extents_inlinedata(ctx, &pctx);
1942                         check_immutable(ctx, &pctx);
1943                         check_size(ctx, &pctx);
1944                         ctx->fs_chardev_count++;
1945                 } else if (LINUX_S_ISBLK (inode->i_mode) &&
1946                            e2fsck_pass1_check_device_inode(fs, inode)) {
1947                         check_extents_inlinedata(ctx, &pctx);
1948                         check_immutable(ctx, &pctx);
1949                         check_size(ctx, &pctx);
1950                         ctx->fs_blockdev_count++;
1951                 } else if (LINUX_S_ISLNK (inode->i_mode) &&
1952                            e2fsck_pass1_check_symlink(fs, ino, inode,
1953                                                       block_buf)) {
1954                         check_immutable(ctx, &pctx);
1955                         ctx->fs_symlinks_count++;
1956                         if (inode->i_flags & EXT4_INLINE_DATA_FL) {
1957                                 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1958                                 continue;
1959                         } else if (ext2fs_is_fast_symlink(inode)) {
1960                                 ctx->fs_fast_symlinks_count++;
1961                                 check_blocks(ctx, &pctx, block_buf,
1962                                              &ea_ibody_quota);
1963                                 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1964                                 continue;
1965                         }
1966                 }
1967                 else if (LINUX_S_ISFIFO (inode->i_mode) &&
1968                          e2fsck_pass1_check_device_inode(fs, inode)) {
1969                         check_extents_inlinedata(ctx, &pctx);
1970                         check_immutable(ctx, &pctx);
1971                         check_size(ctx, &pctx);
1972                         ctx->fs_fifo_count++;
1973                 } else if ((LINUX_S_ISSOCK (inode->i_mode)) &&
1974                            e2fsck_pass1_check_device_inode(fs, inode)) {
1975                         check_extents_inlinedata(ctx, &pctx);
1976                         check_immutable(ctx, &pctx);
1977                         check_size(ctx, &pctx);
1978                         ctx->fs_sockets_count++;
1979                 } else
1980                         mark_inode_bad(ctx, ino);
1981                 if (!(inode->i_flags & EXT4_EXTENTS_FL) &&
1982                     !(inode->i_flags & EXT4_INLINE_DATA_FL)) {
1983                         if (inode->i_block[EXT2_IND_BLOCK])
1984                                 ctx->fs_ind_count++;
1985                         if (inode->i_block[EXT2_DIND_BLOCK])
1986                                 ctx->fs_dind_count++;
1987                         if (inode->i_block[EXT2_TIND_BLOCK])
1988                                 ctx->fs_tind_count++;
1989                 }
1990                 if (!(inode->i_flags & EXT4_EXTENTS_FL) &&
1991                     !(inode->i_flags & EXT4_INLINE_DATA_FL) &&
1992                     (inode->i_block[EXT2_IND_BLOCK] ||
1993                      inode->i_block[EXT2_DIND_BLOCK] ||
1994                      inode->i_block[EXT2_TIND_BLOCK] ||
1995                      ext2fs_file_acl_block(fs, inode))) {
1996                         struct process_inode_block *itp;
1997
1998                         itp = &inodes_to_process[process_inode_count];
1999                         itp->ino = ino;
2000                         itp->ea_ibody_quota = ea_ibody_quota;
2001                         if (inode_size < sizeof(struct ext2_inode_large))
2002                                 memcpy(&itp->inode, inode, inode_size);
2003                         else
2004                                 memcpy(&itp->inode, inode, sizeof(itp->inode));
2005                         process_inode_count++;
2006                 } else
2007                         check_blocks(ctx, &pctx, block_buf, &ea_ibody_quota);
2008
2009                 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
2010
2011                 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
2012                         goto endit;
2013
2014                 if (process_inode_count >= ctx->process_inode_size) {
2015                         process_inodes(ctx, block_buf);
2016
2017                         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
2018                                 goto endit;
2019                 }
2020         }
2021         process_inodes(ctx, block_buf);
2022         ext2fs_close_inode_scan(scan);
2023         scan = NULL;
2024
2025         reserve_block_for_root_repair(ctx);
2026         reserve_block_for_lnf_repair(ctx);
2027
2028         /*
2029          * If any extended attribute blocks' reference counts need to
2030          * be adjusted, either up (ctx->refcount_extra), or down
2031          * (ctx->refcount), then fix them.
2032          */
2033         if (ctx->refcount) {
2034                 adjust_extattr_refcount(ctx, ctx->refcount, block_buf, -1);
2035                 ea_refcount_free(ctx->refcount);
2036                 ctx->refcount = 0;
2037         }
2038         if (ctx->refcount_extra) {
2039                 adjust_extattr_refcount(ctx, ctx->refcount_extra,
2040                                         block_buf, +1);
2041                 ea_refcount_free(ctx->refcount_extra);
2042                 ctx->refcount_extra = 0;
2043         }
2044
2045         if (ctx->ea_block_quota_blocks) {
2046                 ea_refcount_free(ctx->ea_block_quota_blocks);
2047                 ctx->ea_block_quota_blocks = 0;
2048         }
2049
2050         if (ctx->ea_block_quota_inodes) {
2051                 ea_refcount_free(ctx->ea_block_quota_inodes);
2052                 ctx->ea_block_quota_inodes = 0;
2053         }
2054
2055         if (ctx->invalid_bitmaps)
2056                 handle_fs_bad_blocks(ctx);
2057
2058         /* We don't need the block_ea_map any more */
2059         if (ctx->block_ea_map) {
2060                 ext2fs_free_block_bitmap(ctx->block_ea_map);
2061                 ctx->block_ea_map = 0;
2062         }
2063
2064         /* We don't need the encryption policy => ID map any more */
2065         destroy_encryption_policy_map(ctx);
2066
2067         if (ctx->flags & E2F_FLAG_RESIZE_INODE) {
2068                 clear_problem_context(&pctx);
2069                 pctx.errcode = ext2fs_create_resize_inode(fs);
2070                 if (pctx.errcode) {
2071                         if (!fix_problem(ctx, PR_1_RESIZE_INODE_CREATE,
2072                                          &pctx)) {
2073                                 ctx->flags |= E2F_FLAG_ABORT;
2074                                 goto endit;
2075                         }
2076                         pctx.errcode = 0;
2077                 }
2078                 if (!pctx.errcode) {
2079                         e2fsck_read_inode(ctx, EXT2_RESIZE_INO, inode,
2080                                           "recreate inode");
2081                         ext2fs_inode_xtime_set(inode, i_mtime, ctx->now);
2082                         e2fsck_write_inode(ctx, EXT2_RESIZE_INO, inode,
2083                                            "recreate inode");
2084                 }
2085                 ctx->flags &= ~E2F_FLAG_RESIZE_INODE;
2086         }
2087
2088         if (ctx->flags & E2F_FLAG_RESTART) {
2089                 /*
2090                  * Only the master copy of the superblock and block
2091                  * group descriptors are going to be written during a
2092                  * restart, so set the superblock to be used to be the
2093                  * master superblock.
2094                  */
2095                 ctx->use_superblock = 0;
2096                 goto endit;
2097         }
2098
2099         if (ctx->large_dirs && !ext2fs_has_feature_largedir(fs->super)) {
2100                 if (fix_problem(ctx, PR_2_FEATURE_LARGE_DIRS, &pctx)) {
2101                         ext2fs_set_feature_largedir(fs->super);
2102                         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
2103                         ext2fs_mark_super_dirty(fs);
2104                 }
2105                 if (fs->super->s_rev_level == EXT2_GOOD_OLD_REV &&
2106                     fix_problem(ctx, PR_1_FS_REV_LEVEL, &pctx)) {
2107                         ext2fs_update_dynamic_rev(fs);
2108                         ext2fs_mark_super_dirty(fs);
2109                 }
2110         }
2111
2112         if (ctx->block_dup_map) {
2113                 if (ctx->options & E2F_OPT_PREEN) {
2114                         clear_problem_context(&pctx);
2115                         fix_problem(ctx, PR_1_DUP_BLOCKS_PREENSTOP, &pctx);
2116                 }
2117                 e2fsck_pass1_dupblocks(ctx, block_buf);
2118         }
2119         ctx->flags |= E2F_FLAG_ALLOC_OK;
2120 endit:
2121         e2fsck_use_inode_shortcuts(ctx, 0);
2122         ext2fs_free_mem(&inodes_to_process);
2123         inodes_to_process = 0;
2124
2125         if (scan)
2126                 ext2fs_close_inode_scan(scan);
2127         if (block_buf)
2128                 ext2fs_free_mem(&block_buf);
2129         if (inode)
2130                 ext2fs_free_mem(&inode);
2131
2132         /*
2133          * The l+f inode may have been cleared, so zap it now and
2134          * later passes will recalculate it if necessary
2135          */
2136         ctx->lost_and_found = 0;
2137
2138         if ((ctx->flags & E2F_FLAG_SIGNAL_MASK) == 0)
2139                 print_resource_track(ctx, _("Pass 1"), &rtrack, ctx->fs->io);
2140         else
2141                 ctx->invalid_bitmaps++;
2142 }
2143 #undef FINISH_INODE_LOOP
2144
2145 /*
2146  * When the inode_scan routines call this callback at the end of the
2147  * glock group, call process_inodes.
2148  */
2149 static errcode_t scan_callback(ext2_filsys fs,
2150                                ext2_inode_scan scan EXT2FS_ATTR((unused)),
2151                                dgrp_t group, void * priv_data)
2152 {
2153         struct scan_callback_struct *scan_struct;
2154         e2fsck_t ctx;
2155
2156         scan_struct = (struct scan_callback_struct *) priv_data;
2157         ctx = scan_struct->ctx;
2158
2159         process_inodes((e2fsck_t) fs->priv_data, scan_struct->block_buf);
2160
2161         if (ctx->progress)
2162                 if ((ctx->progress)(ctx, 1, group+1,
2163                                     ctx->fs->group_desc_count))
2164                         return EXT2_ET_CANCEL_REQUESTED;
2165
2166         return 0;
2167 }
2168
2169 /*
2170  * Process the inodes in the "inodes to process" list.
2171  */
2172 static void process_inodes(e2fsck_t ctx, char *block_buf)
2173 {
2174         int                     i;
2175         struct ext2_inode       *old_stashed_inode;
2176         ext2_ino_t              old_stashed_ino;
2177         const char              *old_operation;
2178         char                    buf[80];
2179         struct problem_context  pctx;
2180
2181 #if 0
2182         printf("begin process_inodes: ");
2183 #endif
2184         if (process_inode_count == 0)
2185                 return;
2186         old_operation = ehandler_operation(0);
2187         old_stashed_inode = ctx->stashed_inode;
2188         old_stashed_ino = ctx->stashed_ino;
2189         qsort(inodes_to_process, process_inode_count,
2190                       sizeof(struct process_inode_block), process_inode_cmp);
2191         clear_problem_context(&pctx);
2192         for (i=0; i < process_inode_count; i++) {
2193                 pctx.inode = ctx->stashed_inode =
2194                         (struct ext2_inode *) &inodes_to_process[i].inode;
2195                 pctx.ino = ctx->stashed_ino = inodes_to_process[i].ino;
2196
2197 #if 0
2198                 printf("%u ", pctx.ino);
2199 #endif
2200                 sprintf(buf, _("reading indirect blocks of inode %u"),
2201                         pctx.ino);
2202                 ehandler_operation(buf);
2203                 check_blocks(ctx, &pctx, block_buf,
2204                              &inodes_to_process[i].ea_ibody_quota);
2205                 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
2206                         break;
2207         }
2208         ctx->stashed_inode = old_stashed_inode;
2209         ctx->stashed_ino = old_stashed_ino;
2210         process_inode_count = 0;
2211 #if 0
2212         printf("end process inodes\n");
2213 #endif
2214         ehandler_operation(old_operation);
2215 }
2216
2217 static EXT2_QSORT_TYPE process_inode_cmp(const void *a, const void *b)
2218 {
2219         const struct process_inode_block *ib_a =
2220                 (const struct process_inode_block *) a;
2221         const struct process_inode_block *ib_b =
2222                 (const struct process_inode_block *) b;
2223         int     ret;
2224
2225         ret = (ib_a->inode.i_block[EXT2_IND_BLOCK] -
2226                ib_b->inode.i_block[EXT2_IND_BLOCK]);
2227         if (ret == 0)
2228                 /*
2229                  * We only call process_inodes() for non-extent
2230                  * inodes, so it's OK to pass NULL to
2231                  * ext2fs_file_acl_block() here.
2232                  */
2233                 ret = ext2fs_file_acl_block(0, ext2fs_const_inode(&ib_a->inode)) -
2234                         ext2fs_file_acl_block(0, ext2fs_const_inode(&ib_b->inode));
2235         if (ret == 0)
2236                 ret = ib_a->ino - ib_b->ino;
2237         return ret;
2238 }
2239
2240 /*
2241  * Mark an inode as being bad in some what
2242  */
2243 static void mark_inode_bad(e2fsck_t ctx, ext2_ino_t ino)
2244 {
2245         struct          problem_context pctx;
2246
2247         if (!ctx->inode_bad_map) {
2248                 clear_problem_context(&pctx);
2249
2250                 pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
2251                                 _("bad inode map"), EXT2FS_BMAP64_RBTREE,
2252                                 "inode_bad_map", &ctx->inode_bad_map);
2253                 if (pctx.errcode) {
2254                         pctx.num = 3;
2255                         fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
2256                         /* Should never get here */
2257                         ctx->flags |= E2F_FLAG_ABORT;
2258                         return;
2259                 }
2260         }
2261         ext2fs_mark_inode_bitmap2(ctx->inode_bad_map, ino);
2262 }
2263
2264 static void add_casefolded_dir(e2fsck_t ctx, ext2_ino_t ino)
2265 {
2266         struct          problem_context pctx;
2267
2268         if (!ctx->casefolded_dirs) {
2269                 pctx.errcode = ext2fs_u32_list_create(&ctx->casefolded_dirs, 0);
2270                 if (pctx.errcode)
2271                         goto error;
2272         }
2273         pctx.errcode = ext2fs_u32_list_add(ctx->casefolded_dirs, ino);
2274         if (pctx.errcode == 0)
2275                 return;
2276 error:
2277         fix_problem(ctx, PR_1_ALLOCATE_CASEFOLDED_DIRLIST, &pctx);
2278         /* Should never get here */
2279         ctx->flags |= E2F_FLAG_ABORT;
2280 }
2281
2282 /*
2283  * This procedure will allocate the inode "bb" (badblock) map table
2284  */
2285 static void alloc_bb_map(e2fsck_t ctx)
2286 {
2287         struct          problem_context pctx;
2288
2289         clear_problem_context(&pctx);
2290         pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
2291                         _("inode in bad block map"), EXT2FS_BMAP64_RBTREE,
2292                         "inode_bb_map", &ctx->inode_bb_map);
2293         if (pctx.errcode) {
2294                 pctx.num = 4;
2295                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
2296                 /* Should never get here */
2297                 ctx->flags |= E2F_FLAG_ABORT;
2298                 return;
2299         }
2300 }
2301
2302 /*
2303  * This procedure will allocate the inode imagic table
2304  */
2305 static void alloc_imagic_map(e2fsck_t ctx)
2306 {
2307         struct          problem_context pctx;
2308
2309         clear_problem_context(&pctx);
2310         pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
2311                         _("imagic inode map"), EXT2FS_BMAP64_RBTREE,
2312                         "inode_imagic_map", &ctx->inode_imagic_map);
2313         if (pctx.errcode) {
2314                 pctx.num = 5;
2315                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
2316                 /* Should never get here */
2317                 ctx->flags |= E2F_FLAG_ABORT;
2318                 return;
2319         }
2320 }
2321
2322 /*
2323  * Marks a block as in use, setting the dup_map if it's been set
2324  * already.  Called by process_block and process_bad_block.
2325  *
2326  * WARNING: Assumes checks have already been done to make sure block
2327  * is valid.  This is true in both process_block and process_bad_block.
2328  */
2329 static _INLINE_ void mark_block_used(e2fsck_t ctx, blk64_t block)
2330 {
2331         struct          problem_context pctx;
2332
2333         clear_problem_context(&pctx);
2334
2335         if (ext2fs_fast_test_block_bitmap2(ctx->block_found_map, block)) {
2336                 if (ext2fs_has_feature_shared_blocks(ctx->fs->super) &&
2337                     !(ctx->options & E2F_OPT_UNSHARE_BLOCKS)) {
2338                         return;
2339                 }
2340                 if (!ctx->block_dup_map) {
2341                         pctx.errcode = e2fsck_allocate_block_bitmap(ctx->fs,
2342                                         _("multiply claimed block map"),
2343                                         EXT2FS_BMAP64_RBTREE, "block_dup_map",
2344                                         &ctx->block_dup_map);
2345                         if (pctx.errcode) {
2346                                 pctx.num = 3;
2347                                 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR,
2348                                             &pctx);
2349                                 /* Should never get here */
2350                                 ctx->flags |= E2F_FLAG_ABORT;
2351                                 return;
2352                         }
2353                 }
2354                 ext2fs_fast_mark_block_bitmap2(ctx->block_dup_map, block);
2355         } else {
2356                 ext2fs_fast_mark_block_bitmap2(ctx->block_found_map, block);
2357         }
2358 }
2359
2360 /*
2361  * When cluster size is greater than one block, it is caller's responsibility
2362  * to make sure block parameter starts at a cluster boundary.
2363  */
2364 static _INLINE_ void mark_blocks_used(e2fsck_t ctx, blk64_t block,
2365                                       unsigned int num)
2366 {
2367         if (ext2fs_test_block_bitmap_range2(ctx->block_found_map, block, num))
2368                 ext2fs_mark_block_bitmap_range2(ctx->block_found_map, block, num);
2369         else {
2370                 unsigned int i;
2371
2372                 for (i = 0; i < num; i += EXT2FS_CLUSTER_RATIO(ctx->fs))
2373                         mark_block_used(ctx, block + i);
2374         }
2375 }
2376
2377 /*
2378  * Adjust the extended attribute block's reference counts at the end
2379  * of pass 1, either by subtracting out references for EA blocks that
2380  * are still referenced in ctx->refcount, or by adding references for
2381  * EA blocks that had extra references as accounted for in
2382  * ctx->refcount_extra.
2383  */
2384 static void adjust_extattr_refcount(e2fsck_t ctx, ext2_refcount_t refcount,
2385                                     char *block_buf, int adjust_sign)
2386 {
2387         struct ext2_ext_attr_header     *header;
2388         struct problem_context          pctx;
2389         ext2_filsys                     fs = ctx->fs;
2390         blk64_t                         blk;
2391         __u32                           should_be;
2392         ea_value_t                      count;
2393
2394         clear_problem_context(&pctx);
2395
2396         ea_refcount_intr_begin(refcount);
2397         while (1) {
2398                 if ((blk = ea_refcount_intr_next(refcount, &count)) == 0)
2399                         break;
2400                 pctx.blk = blk;
2401                 pctx.errcode = ext2fs_read_ext_attr3(fs, blk, block_buf,
2402                                                      pctx.ino);
2403                 if (pctx.errcode) {
2404                         fix_problem(ctx, PR_1_EXTATTR_READ_ABORT, &pctx);
2405                         return;
2406                 }
2407                 header = (struct ext2_ext_attr_header *) block_buf;
2408                 pctx.blkcount = header->h_refcount;
2409                 should_be = header->h_refcount + adjust_sign * (int)count;
2410                 pctx.num = should_be;
2411                 if (fix_problem(ctx, PR_1_EXTATTR_REFCOUNT, &pctx)) {
2412                         header->h_refcount = should_be;
2413                         pctx.errcode = ext2fs_write_ext_attr3(fs, blk,
2414                                                              block_buf,
2415                                                              pctx.ino);
2416                         if (pctx.errcode) {
2417                                 fix_problem(ctx, PR_1_EXTATTR_WRITE_ABORT,
2418                                             &pctx);
2419                                 continue;
2420                         }
2421                 }
2422         }
2423 }
2424
2425 /*
2426  * Handle processing the extended attribute blocks
2427  */
2428 static int check_ext_attr(e2fsck_t ctx, struct problem_context *pctx,
2429                            char *block_buf, struct ea_quota *ea_block_quota)
2430 {
2431         ext2_filsys fs = ctx->fs;
2432         ext2_ino_t      ino = pctx->ino;
2433         struct ext2_inode *inode = pctx->inode;
2434         blk64_t         blk;
2435         char *          end;
2436         struct ext2_ext_attr_header *header;
2437         struct ext2_ext_attr_entry *first, *entry;
2438         blk64_t         quota_blocks = EXT2FS_C2B(fs, 1);
2439         __u64           quota_inodes = 0;
2440         region_t        region = 0;
2441         int             failed_csum = 0;
2442
2443         ea_block_quota->blocks = 0;
2444         ea_block_quota->inodes = 0;
2445
2446         blk = ext2fs_file_acl_block(fs, inode);
2447         if (blk == 0)
2448                 return 0;
2449
2450         /*
2451          * If the Extended attribute flag isn't set, then a non-zero
2452          * file acl means that the inode is corrupted.
2453          *
2454          * Or if the extended attribute block is an invalid block,
2455          * then the inode is also corrupted.
2456          */
2457         if (!ext2fs_has_feature_xattr(fs->super) ||
2458             (blk < fs->super->s_first_data_block) ||
2459             (blk >= ext2fs_blocks_count(fs->super))) {
2460                 mark_inode_bad(ctx, ino);
2461                 return 0;
2462         }
2463
2464         /* If ea bitmap hasn't been allocated, create it */
2465         if (!ctx->block_ea_map) {
2466                 pctx->errcode = e2fsck_allocate_block_bitmap(fs,
2467                                         _("ext attr block map"),
2468                                         EXT2FS_BMAP64_RBTREE, "block_ea_map",
2469                                         &ctx->block_ea_map);
2470                 if (pctx->errcode) {
2471                         pctx->num = 2;
2472                         fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, pctx);
2473                         ctx->flags |= E2F_FLAG_ABORT;
2474                         return 0;
2475                 }
2476         }
2477
2478         /* Create the EA refcount structure if necessary */
2479         if (!ctx->refcount) {
2480                 pctx->errcode = ea_refcount_create(0, &ctx->refcount);
2481                 if (pctx->errcode) {
2482                         pctx->num = 1;
2483                         fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
2484                         ctx->flags |= E2F_FLAG_ABORT;
2485                         return 0;
2486                 }
2487         }
2488
2489 #if 0
2490         /* Debugging text */
2491         printf("Inode %u has EA block %u\n", ino, blk);
2492 #endif
2493
2494         /* Have we seen this EA block before? */
2495         if (ext2fs_fast_test_block_bitmap2(ctx->block_ea_map, blk)) {
2496                 ea_block_quota->blocks = EXT2FS_C2B(fs, 1);
2497                 ea_block_quota->inodes = 0;
2498
2499                 if (ctx->ea_block_quota_blocks) {
2500                         ea_refcount_fetch(ctx->ea_block_quota_blocks, blk,
2501                                           &quota_blocks);
2502                         if (quota_blocks)
2503                                 ea_block_quota->blocks = quota_blocks;
2504                 }
2505
2506                 if (ctx->ea_block_quota_inodes)
2507                         ea_refcount_fetch(ctx->ea_block_quota_inodes, blk,
2508                                           &ea_block_quota->inodes);
2509
2510                 if (ea_refcount_decrement(ctx->refcount, blk, 0) == 0)
2511                         return 1;
2512                 /* Ooops, this EA was referenced more than it stated */
2513                 if (!ctx->refcount_extra) {
2514                         pctx->errcode = ea_refcount_create(0,
2515                                            &ctx->refcount_extra);
2516                         if (pctx->errcode) {
2517                                 pctx->num = 2;
2518                                 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
2519                                 ctx->flags |= E2F_FLAG_ABORT;
2520                                 return 0;
2521                         }
2522                 }
2523                 ea_refcount_increment(ctx->refcount_extra, blk, 0);
2524                 return 1;
2525         }
2526
2527         /*
2528          * OK, we haven't seen this EA block yet.  So we need to
2529          * validate it
2530          */
2531         pctx->blk = blk;
2532         pctx->errcode = ext2fs_read_ext_attr3(fs, blk, block_buf, pctx->ino);
2533         if (pctx->errcode == EXT2_ET_EXT_ATTR_CSUM_INVALID) {
2534                 pctx->errcode = 0;
2535                 failed_csum = 1;
2536         } else if (pctx->errcode == EXT2_ET_BAD_EA_HEADER)
2537                 pctx->errcode = 0;
2538
2539         if (pctx->errcode &&
2540             fix_problem(ctx, PR_1_READ_EA_BLOCK, pctx)) {
2541                 pctx->errcode = 0;
2542                 goto clear_extattr;
2543         }
2544         header = (struct ext2_ext_attr_header *) block_buf;
2545         pctx->blk = ext2fs_file_acl_block(fs, inode);
2546         if (((ctx->ext_attr_ver == 1) &&
2547              (header->h_magic != EXT2_EXT_ATTR_MAGIC_v1)) ||
2548             ((ctx->ext_attr_ver == 2) &&
2549              (header->h_magic != EXT2_EXT_ATTR_MAGIC))) {
2550                 if (fix_problem(ctx, PR_1_BAD_EA_BLOCK, pctx))
2551                         goto clear_extattr;
2552         }
2553
2554         if (header->h_blocks != 1) {
2555                 if (fix_problem(ctx, PR_1_EA_MULTI_BLOCK, pctx))
2556                         goto clear_extattr;
2557         }
2558
2559         if (pctx->errcode && fix_problem(ctx, PR_1_READ_EA_BLOCK, pctx))
2560                 goto clear_extattr;
2561
2562         region = region_create(0, fs->blocksize);
2563         if (!region) {
2564                 fix_problem(ctx, PR_1_EA_ALLOC_REGION_ABORT, pctx);
2565                 ctx->flags |= E2F_FLAG_ABORT;
2566                 return 0;
2567         }
2568         if (region_allocate(region, 0, sizeof(struct ext2_ext_attr_header))) {
2569                 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
2570                         goto clear_extattr;
2571         }
2572
2573         first = (struct ext2_ext_attr_entry *)(header+1);
2574         end = block_buf + fs->blocksize;
2575         entry = first;
2576         while ((char *)entry < end && *(__u32 *)entry) {
2577                 __u32 hash;
2578
2579                 if (region_allocate(region, (char *)entry - (char *)header,
2580                                    EXT2_EXT_ATTR_LEN(entry->e_name_len))) {
2581                         if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
2582                                 goto clear_extattr;
2583                         break;
2584                 }
2585                 if ((ctx->ext_attr_ver == 1 &&
2586                      (entry->e_name_len == 0 || entry->e_name_index != 0)) ||
2587                     (ctx->ext_attr_ver == 2 &&
2588                      entry->e_name_index == 0)) {
2589                         if (fix_problem(ctx, PR_1_EA_BAD_NAME, pctx))
2590                                 goto clear_extattr;
2591                         break;
2592                 }
2593                 if (entry->e_value_inum == 0) {
2594                         if (entry->e_value_size > EXT2_XATTR_SIZE_MAX ||
2595                             (entry->e_value_offs + entry->e_value_size >
2596                              fs->blocksize)) {
2597                                 if (fix_problem(ctx, PR_1_EA_BAD_VALUE, pctx))
2598                                         goto clear_extattr;
2599                                 break;
2600                         }
2601                         if (entry->e_value_size &&
2602                             region_allocate(region, entry->e_value_offs,
2603                                             EXT2_EXT_ATTR_SIZE(entry->e_value_size))) {
2604                                 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION,
2605                                                 pctx))
2606                                         goto clear_extattr;
2607                         }
2608
2609                         hash = ext2fs_ext_attr_hash_entry(entry, block_buf +
2610                                                           entry->e_value_offs);
2611                         if (entry->e_hash != hash)
2612                                 hash = ext2fs_ext_attr_hash_entry_signed(entry,
2613                                         block_buf + entry->e_value_offs);
2614
2615                         if (entry->e_hash != hash) {
2616                                 pctx->num = entry->e_hash;
2617                                 if (fix_problem(ctx, PR_1_ATTR_HASH, pctx))
2618                                         goto clear_extattr;
2619                                 entry->e_hash = hash;
2620                         }
2621                 } else {
2622                         problem_t problem;
2623                         blk64_t entry_quota_blocks;
2624
2625                         problem = check_large_ea_inode(ctx, entry, pctx,
2626                                                        &entry_quota_blocks);
2627                         if (problem && fix_problem(ctx, problem, pctx))
2628                                 goto clear_extattr;
2629
2630                         quota_blocks += entry_quota_blocks;
2631                         quota_inodes++;
2632                 }
2633
2634                 entry = EXT2_EXT_ATTR_NEXT(entry);
2635         }
2636         if (region_allocate(region, (char *)entry - (char *)header, 4)) {
2637                 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
2638                         goto clear_extattr;
2639         }
2640         region_free(region);
2641
2642         /*
2643          * We only get here if there was no other errors that were fixed.
2644          * If there was a checksum fail, ask to correct it.
2645          */
2646         if (failed_csum &&
2647             fix_problem(ctx, PR_1_EA_BLOCK_ONLY_CSUM_INVALID, pctx)) {
2648                 pctx->errcode = ext2fs_write_ext_attr3(fs, blk, block_buf,
2649                                                        pctx->ino);
2650                 if (pctx->errcode)
2651                         return 0;
2652         }
2653
2654         if (quota_blocks != EXT2FS_C2B(fs, 1U)) {
2655                 if (!ctx->ea_block_quota_blocks) {
2656                         pctx->errcode = ea_refcount_create(0,
2657                                                 &ctx->ea_block_quota_blocks);
2658                         if (pctx->errcode) {
2659                                 pctx->num = 3;
2660                                 goto refcount_fail;
2661                         }
2662                 }
2663                 ea_refcount_store(ctx->ea_block_quota_blocks, blk,
2664                                   quota_blocks);
2665         }
2666
2667         if (quota_inodes) {
2668                 if (!ctx->ea_block_quota_inodes) {
2669                         pctx->errcode = ea_refcount_create(0,
2670                                                 &ctx->ea_block_quota_inodes);
2671                         if (pctx->errcode) {
2672                                 pctx->num = 4;
2673 refcount_fail:
2674                                 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
2675                                 ctx->flags |= E2F_FLAG_ABORT;
2676                                 return 0;
2677                         }
2678                 }
2679
2680                 ea_refcount_store(ctx->ea_block_quota_inodes, blk,
2681                                   quota_inodes);
2682         }
2683         ea_block_quota->blocks = quota_blocks;
2684         ea_block_quota->inodes = quota_inodes;
2685
2686         inc_ea_inode_refs(ctx, pctx, first, end);
2687         ea_refcount_store(ctx->refcount, blk, header->h_refcount - 1);
2688         mark_block_used(ctx, blk);
2689         ext2fs_fast_mark_block_bitmap2(ctx->block_ea_map, blk);
2690         return 1;
2691
2692 clear_extattr:
2693         if (region)
2694                 region_free(region);
2695         ext2fs_file_acl_block_set(fs, inode, 0);
2696         e2fsck_write_inode(ctx, ino, inode, "check_ext_attr");
2697         return 0;
2698 }
2699
2700 /* Returns 1 if bad htree, 0 if OK */
2701 static int handle_htree(e2fsck_t ctx, struct problem_context *pctx,
2702                         ext2_ino_t ino, struct ext2_inode *inode,
2703                         char *block_buf)
2704 {
2705         struct ext2_dx_root_info        *root;
2706         ext2_filsys                     fs = ctx->fs;
2707         errcode_t                       retval;
2708         blk64_t                         blk;
2709
2710         if ((!LINUX_S_ISDIR(inode->i_mode) &&
2711              fix_problem(ctx, PR_1_HTREE_NODIR, pctx)) ||
2712             (!ext2fs_has_feature_dir_index(fs->super) &&
2713              fix_problem(ctx, PR_1_HTREE_SET, pctx)))
2714                 return 1;
2715
2716         pctx->errcode = ext2fs_bmap2(fs, ino, inode, 0, 0, 0, 0, &blk);
2717
2718         if ((pctx->errcode) ||
2719             (blk == 0) ||
2720             (blk < fs->super->s_first_data_block) ||
2721             (blk >= ext2fs_blocks_count(fs->super))) {
2722                 if (fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
2723                         return 1;
2724                 else
2725                         return 0;
2726         }
2727
2728         retval = io_channel_read_blk64(fs->io, blk, 1, block_buf);
2729         if (retval && fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
2730                 return 1;
2731
2732         /* XXX should check that beginning matches a directory */
2733         root = (struct ext2_dx_root_info *) (block_buf + 24);
2734
2735         if ((root->reserved_zero || root->info_length < 8) &&
2736             fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
2737                 return 1;
2738
2739         pctx->num = root->hash_version;
2740         if ((root->hash_version != EXT2_HASH_LEGACY) &&
2741             (root->hash_version != EXT2_HASH_HALF_MD4) &&
2742             (root->hash_version != EXT2_HASH_TEA) &&
2743             (root->hash_version != EXT2_HASH_SIPHASH) &&
2744             fix_problem(ctx, PR_1_HTREE_HASHV, pctx))
2745                 return 1;
2746
2747         if (ext4_hash_in_dirent(inode)) {
2748                 if (root->hash_version != EXT2_HASH_SIPHASH &&
2749                     fix_problem(ctx, PR_1_HTREE_NEEDS_SIPHASH, pctx))
2750                         return 1;
2751         } else {
2752                 if (root->hash_version == EXT2_HASH_SIPHASH &&
2753                    fix_problem(ctx, PR_1_HTREE_CANNOT_SIPHASH, pctx))
2754                         return 1;
2755         }
2756
2757         if ((root->unused_flags & EXT2_HASH_FLAG_INCOMPAT) &&
2758             fix_problem(ctx, PR_1_HTREE_INCOMPAT, pctx))
2759                 return 1;
2760
2761         pctx->num = root->indirect_levels;
2762         /* if htree level is clearly too high, consider it to be broken */
2763         if (root->indirect_levels > EXT4_HTREE_LEVEL &&
2764             fix_problem(ctx, PR_1_HTREE_DEPTH, pctx))
2765                 return 1;
2766
2767         /* if level is only maybe too high, LARGE_DIR feature could be unset */
2768         if (root->indirect_levels > ext2_dir_htree_level(fs) &&
2769             !ext2fs_has_feature_largedir(fs->super)) {
2770                 int blockbits = EXT2_BLOCK_SIZE_BITS(fs->super) + 10;
2771                 unsigned idx_pb = 1 << (blockbits - 3);
2772
2773                 /* compare inode size/blocks vs. max-sized 2-level htree */
2774                 if (EXT2_I_SIZE(pctx->inode) <
2775                     (idx_pb - 1) * (idx_pb - 2) << blockbits &&
2776                     pctx->inode->i_blocks <
2777                     (idx_pb - 1) * (idx_pb - 2) << (blockbits - 9) &&
2778                     fix_problem(ctx, PR_1_HTREE_DEPTH, pctx))
2779                         return 1;
2780         }
2781
2782         if (root->indirect_levels > EXT4_HTREE_LEVEL_COMPAT ||
2783             ext2fs_needs_large_file_feature(EXT2_I_SIZE(inode)))
2784                 ctx->large_dirs++;
2785
2786         return 0;
2787 }
2788
2789 void e2fsck_clear_inode(e2fsck_t ctx, ext2_ino_t ino,
2790                         struct ext2_inode *inode, int restart_flag,
2791                         const char *source)
2792 {
2793         inode->i_flags = 0;
2794         inode->i_links_count = 0;
2795         ext2fs_icount_store(ctx->inode_link_info, ino, 0);
2796         ext2fs_set_dtime(ctx->fs, inode);
2797
2798         /*
2799          * If a special inode has such rotten block mappings that we
2800          * want to clear the whole inode, be sure to actually zap
2801          * the block maps because i_links_count isn't checked for
2802          * special inodes, and we'll end up right back here the next
2803          * time we run fsck.
2804          */
2805         if (ino < EXT2_FIRST_INODE(ctx->fs->super))
2806                 memset(inode->i_block, 0, sizeof(inode->i_block));
2807
2808         ext2fs_unmark_inode_bitmap2(ctx->inode_dir_map, ino);
2809         ext2fs_unmark_inode_bitmap2(ctx->inode_used_map, ino);
2810         if (ctx->inode_reg_map)
2811                 ext2fs_unmark_inode_bitmap2(ctx->inode_reg_map, ino);
2812         if (ctx->inode_bad_map)
2813                 ext2fs_unmark_inode_bitmap2(ctx->inode_bad_map, ino);
2814
2815         /*
2816          * If the inode was partially accounted for before processing
2817          * was aborted, we need to restart the pass 1 scan.
2818          */
2819         ctx->flags |= restart_flag;
2820
2821         if (ino == EXT2_BAD_INO)
2822                 memset(inode, 0, sizeof(struct ext2_inode));
2823
2824         e2fsck_write_inode(ctx, ino, inode, source);
2825 }
2826
2827 /*
2828  * Use the multiple-blocks reclamation code to fix alignment problems in
2829  * a bigalloc filesystem.  We want a logical cluster to map to *only* one
2830  * physical cluster, and we want the block offsets within that cluster to
2831  * line up.
2832  */
2833 static int has_unaligned_cluster_map(e2fsck_t ctx,
2834                                      blk64_t last_pblk, blk64_t last_lblk,
2835                                      blk64_t pblk, blk64_t lblk)
2836 {
2837         blk64_t cluster_mask;
2838
2839         if (!ctx->fs->cluster_ratio_bits)
2840                 return 0;
2841         cluster_mask = EXT2FS_CLUSTER_MASK(ctx->fs);
2842
2843         /*
2844          * If the block in the logical cluster doesn't align with the block in
2845          * the physical cluster...
2846          */
2847         if ((lblk & cluster_mask) != (pblk & cluster_mask))
2848                 return 1;
2849
2850         /*
2851          * If we cross a physical cluster boundary within a logical cluster...
2852          */
2853         if (last_pblk && (lblk & cluster_mask) != 0 &&
2854             EXT2FS_B2C(ctx->fs, lblk) == EXT2FS_B2C(ctx->fs, last_lblk) &&
2855             EXT2FS_B2C(ctx->fs, pblk) != EXT2FS_B2C(ctx->fs, last_pblk))
2856                 return 1;
2857
2858         return 0;
2859 }
2860
2861 static void scan_extent_node(e2fsck_t ctx, struct problem_context *pctx,
2862                              struct process_block_struct *pb,
2863                              blk64_t start_block, blk64_t end_block,
2864                              blk64_t eof_block,
2865                              ext2_extent_handle_t ehandle,
2866                              int try_repairs)
2867 {
2868         struct ext2fs_extent    extent;
2869         blk64_t                 blk, last_lblk;
2870         unsigned int            i, n;
2871         int                     is_dir, is_leaf;
2872         problem_t               problem;
2873         struct ext2_extent_info info;
2874         int                     failed_csum = 0;
2875
2876         if (pctx->errcode == EXT2_ET_EXTENT_CSUM_INVALID)
2877                 failed_csum = 1;
2878
2879         pctx->errcode = ext2fs_extent_get_info(ehandle, &info);
2880         if (pctx->errcode)
2881                 return;
2882         if (!(ctx->options & E2F_OPT_FIXES_ONLY) &&
2883             !pb->eti.force_rebuild &&
2884             info.curr_level < MAX_EXTENT_DEPTH_COUNT) {
2885                 struct extent_tree_level *etl;
2886
2887                 etl = pb->eti.ext_info + info.curr_level;
2888                 etl->num_extents += info.num_entries;
2889                 etl->max_extents += info.max_entries;
2890                 /*
2891                  * Implementation wart: Splitting extent blocks when appending
2892                  * will leave the old block with one free entry.  Therefore
2893                  * unless the node is totally full, pretend that a non-root
2894                  * extent block can hold one fewer entry than it actually does,
2895                  * so that we don't repeatedly rebuild the extent tree.
2896                  */
2897                 if (info.curr_level && info.num_entries < info.max_entries)
2898                         etl->max_extents--;
2899         }
2900
2901         pctx->errcode = ext2fs_extent_get(ehandle, EXT2_EXTENT_FIRST_SIB,
2902                                           &extent);
2903         while ((pctx->errcode == 0 ||
2904                 pctx->errcode == EXT2_ET_EXTENT_CSUM_INVALID) &&
2905                info.num_entries-- > 0) {
2906                 is_leaf = extent.e_flags & EXT2_EXTENT_FLAGS_LEAF;
2907                 is_dir = LINUX_S_ISDIR(pctx->inode->i_mode);
2908                 last_lblk = extent.e_lblk + extent.e_len - 1;
2909
2910                 problem = 0;
2911                 pctx->blk = extent.e_pblk;
2912                 pctx->blk2 = extent.e_lblk;
2913                 pctx->num = extent.e_len;
2914                 pctx->blkcount = extent.e_lblk + extent.e_len;
2915
2916                 if (extent.e_pblk == 0 ||
2917                     extent.e_pblk < ctx->fs->super->s_first_data_block ||
2918                     extent.e_pblk >= ext2fs_blocks_count(ctx->fs->super))
2919                         problem = PR_1_EXTENT_BAD_START_BLK;
2920                 else if (extent.e_lblk < start_block)
2921                         problem = PR_1_OUT_OF_ORDER_EXTENTS;
2922                 else if ((end_block && last_lblk > end_block) &&
2923                          !(last_lblk > eof_block &&
2924                            ((extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT) ||
2925                             (pctx->inode->i_flags & EXT4_VERITY_FL))))
2926                         problem = PR_1_EXTENT_END_OUT_OF_BOUNDS;
2927                 else if (is_leaf && extent.e_len == 0)
2928                         problem = PR_1_EXTENT_LENGTH_ZERO;
2929                 else if (is_leaf &&
2930                          (extent.e_pblk + extent.e_len) >
2931                          ext2fs_blocks_count(ctx->fs->super))
2932                         problem = PR_1_EXTENT_ENDS_BEYOND;
2933                 else if (is_leaf && is_dir && !pctx->inode->i_size_high &&
2934                          !ext2fs_has_feature_largedir(ctx->fs->super) &&
2935                          ((extent.e_lblk + extent.e_len) >
2936                           (1U << (21 - ctx->fs->super->s_log_block_size))))
2937                         problem = PR_1_TOOBIG_DIR;
2938
2939                 if (is_leaf && problem == 0 && extent.e_len > 0) {
2940 #if 0
2941                         printf("extent_region(ino=%u, expect=%llu, "
2942                                "lblk=%llu, len=%u)\n", pb->ino,
2943                                (unsigned long long) pb->next_lblock,
2944                                (unsigned long long) extent.e_lblk,
2945                                extent.e_len);
2946 #endif
2947                         if (extent.e_lblk < pb->next_lblock)
2948                                 problem = PR_1_EXTENT_COLLISION;
2949                         else if (extent.e_lblk + extent.e_len > pb->next_lblock)
2950                                 pb->next_lblock = extent.e_lblk + extent.e_len;
2951                 }
2952
2953                 /*
2954                  * Uninitialized blocks in a directory?  Clear the flag and
2955                  * we'll interpret the blocks later.
2956                  */
2957                 if (try_repairs && is_dir && problem == 0 &&
2958                     (extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT) &&
2959                     fix_problem(ctx, PR_1_UNINIT_DBLOCK, pctx)) {
2960                         extent.e_flags &= ~EXT2_EXTENT_FLAGS_UNINIT;
2961                         pb->inode_modified = 1;
2962                         pctx->errcode = ext2fs_extent_replace(ehandle, 0,
2963                                                               &extent);
2964                         if (pctx->errcode)
2965                                 return;
2966                         failed_csum = 0;
2967                 }
2968 #ifdef CONFIG_DEVELOPER_FEATURES
2969                 if (try_repairs && !is_dir && problem == 0 &&
2970                     (ctx->options & E2F_OPT_CLEAR_UNINIT) &&
2971                     (extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT) &&
2972                     fix_problem(ctx, PR_1_CLEAR_UNINIT_EXTENT, pctx)) {
2973                         extent.e_flags &= ~EXT2_EXTENT_FLAGS_UNINIT;
2974                         pb->inode_modified = 1;
2975                         pctx->errcode = ext2fs_extent_replace(ehandle, 0,
2976                                                               &extent);
2977                         if (pctx->errcode)
2978                                 return;
2979                         failed_csum = 0;
2980                 }
2981 #endif
2982                 if (try_repairs && problem) {
2983 report_problem:
2984                         if (fix_problem(ctx, problem, pctx)) {
2985                                 if (ctx->invalid_bitmaps) {
2986                                         /*
2987                                          * If fsck knows the bitmaps are bad,
2988                                          * skip to the next extent and
2989                                          * try to clear this extent again
2990                                          * after fixing the bitmaps, by
2991                                          * restarting fsck.
2992                                          */
2993                                         pctx->errcode = ext2fs_extent_get(
2994                                                           ehandle,
2995                                                           EXT2_EXTENT_NEXT_SIB,
2996                                                           &extent);
2997                                         ctx->flags |= E2F_FLAG_RESTART_LATER;
2998                                         if (pctx->errcode ==
2999                                                     EXT2_ET_NO_CURRENT_NODE) {
3000                                                 pctx->errcode = 0;
3001                                                 break;
3002                                         }
3003                                         continue;
3004                                 }
3005                                 e2fsck_read_bitmaps(ctx);
3006                                 pb->inode_modified = 1;
3007                                 pctx->errcode =
3008                                         ext2fs_extent_delete(ehandle, 0);
3009                                 if (pctx->errcode) {
3010                                         pctx->str = "ext2fs_extent_delete";
3011                                         return;
3012                                 }
3013                                 pctx->errcode = ext2fs_extent_fix_parents(ehandle);
3014                                 if (pctx->errcode &&
3015                                     pctx->errcode != EXT2_ET_NO_CURRENT_NODE) {
3016                                         pctx->str = "ext2fs_extent_fix_parents";
3017                                         return;
3018                                 }
3019                                 pctx->errcode = ext2fs_extent_get(ehandle,
3020                                                                   EXT2_EXTENT_CURRENT,
3021                                                                   &extent);
3022                                 if (pctx->errcode == EXT2_ET_NO_CURRENT_NODE) {
3023                                         pctx->errcode = 0;
3024                                         break;
3025                                 }
3026                                 failed_csum = 0;
3027                                 continue;
3028                         }
3029                         goto next;
3030                 }
3031
3032                 if (!is_leaf) {
3033                         blk64_t lblk = extent.e_lblk;
3034                         int next_try_repairs = 1;
3035
3036                         blk = extent.e_pblk;
3037
3038                         /*
3039                          * If this lower extent block collides with critical
3040                          * metadata, don't try to repair the damage.  Pass 1b
3041                          * will reallocate the block; then we can try again.
3042                          */
3043                         if (pb->ino != EXT2_RESIZE_INO &&
3044                             extent.e_pblk < ctx->fs->super->s_blocks_count &&
3045                             ext2fs_test_block_bitmap2(ctx->block_metadata_map,
3046                                                       extent.e_pblk)) {
3047                                 next_try_repairs = 0;
3048                                 pctx->blk = blk;
3049                                 fix_problem(ctx,
3050                                             PR_1_CRITICAL_METADATA_COLLISION,
3051                                             pctx);
3052                                 if ((ctx->options & E2F_OPT_NO) == 0)
3053                                         ctx->flags |= E2F_FLAG_RESTART_LATER;
3054                         }
3055                         pctx->errcode = ext2fs_extent_get(ehandle,
3056                                                   EXT2_EXTENT_DOWN, &extent);
3057                         if (pctx->errcode &&
3058                             pctx->errcode != EXT2_ET_EXTENT_CSUM_INVALID) {
3059                                 pctx->str = "EXT2_EXTENT_DOWN";
3060                                 problem = PR_1_EXTENT_HEADER_INVALID;
3061                                 if (!next_try_repairs)
3062                                         return;
3063                                 if (pctx->errcode == EXT2_ET_EXTENT_HEADER_BAD)
3064                                         goto report_problem;
3065                                 return;
3066                         }
3067                         /* The next extent should match this index's logical start */
3068                         if (extent.e_lblk != lblk) {
3069                                 struct ext2_extent_info e_info;
3070
3071                                 pctx->errcode = ext2fs_extent_get_info(ehandle,
3072                                                                        &e_info);
3073                                 if (pctx->errcode) {
3074                                         pctx->str = "ext2fs_extent_get_info";
3075                                         return;
3076                                 }
3077                                 pctx->blk = lblk;
3078                                 pctx->blk2 = extent.e_lblk;
3079                                 pctx->num = e_info.curr_level - 1;
3080                                 problem = PR_1_EXTENT_INDEX_START_INVALID;
3081                                 if (fix_problem(ctx, problem, pctx)) {
3082                                         pb->inode_modified = 1;
3083                                         pctx->errcode =
3084                                                 ext2fs_extent_fix_parents(ehandle);
3085                                         if (pctx->errcode) {
3086                                                 pctx->str = "ext2fs_extent_fix_parents";
3087                                                 return;
3088                                         }
3089                                 }
3090                         }
3091                         scan_extent_node(ctx, pctx, pb, extent.e_lblk,
3092                                          last_lblk, eof_block, ehandle,
3093                                          next_try_repairs);
3094                         if (pctx->errcode)
3095                                 return;
3096                         pctx->errcode = ext2fs_extent_get(ehandle,
3097                                                   EXT2_EXTENT_UP, &extent);
3098                         if (pctx->errcode) {
3099                                 pctx->str = "EXT2_EXTENT_UP";
3100                                 return;
3101                         }
3102                         mark_block_used(ctx, blk);
3103                         pb->num_blocks++;
3104                         goto next;
3105                 }
3106
3107                 if ((pb->previous_block != 0) &&
3108                     (pb->previous_block+1 != extent.e_pblk)) {
3109                         if (ctx->options & E2F_OPT_FRAGCHECK) {
3110                                 char type = '?';
3111
3112                                 if (pb->is_dir)
3113                                         type = 'd';
3114                                 else if (pb->is_reg)
3115                                         type = 'f';
3116
3117                                 printf(("%6lu(%c): expecting %6lu "
3118                                         "actual extent "
3119                                         "phys %6lu log %lu len %lu\n"),
3120                                        (unsigned long) pctx->ino, type,
3121                                        (unsigned long) pb->previous_block+1,
3122                                        (unsigned long) extent.e_pblk,
3123                                        (unsigned long) extent.e_lblk,
3124                                        (unsigned long) extent.e_len);
3125                         }
3126                         pb->fragmented = 1;
3127                 }
3128                 /*
3129                  * If we notice a gap in the logical block mappings of an
3130                  * extent-mapped directory, offer to close the hole by
3131                  * moving the logical block down, otherwise we'll go mad in
3132                  * pass 3 allocating empty directory blocks to fill the hole.
3133                  */
3134                 if (try_repairs && is_dir &&
3135                     pb->last_block + 1 < extent.e_lblk) {
3136                         blk64_t new_lblk;
3137
3138                         new_lblk = pb->last_block + 1;
3139                         if (EXT2FS_CLUSTER_RATIO(ctx->fs) > 1)
3140                                 new_lblk = ((new_lblk +
3141                                              EXT2FS_CLUSTER_RATIO(ctx->fs) - 1) &
3142                                             ~EXT2FS_CLUSTER_MASK(ctx->fs)) |
3143                                            (extent.e_pblk &
3144                                             EXT2FS_CLUSTER_MASK(ctx->fs));
3145                         pctx->blk = extent.e_lblk;
3146                         pctx->blk2 = new_lblk;
3147                         if (fix_problem(ctx, PR_1_COLLAPSE_DBLOCK, pctx)) {
3148                                 extent.e_lblk = new_lblk;
3149                                 pb->inode_modified = 1;
3150                                 pctx->errcode = ext2fs_extent_replace(ehandle,
3151                                                                 0, &extent);
3152                                 if (pctx->errcode) {
3153                                         pctx->errcode = 0;
3154                                         goto alloc_later;
3155                                 }
3156                                 pctx->errcode = ext2fs_extent_fix_parents(ehandle);
3157                                 if (pctx->errcode)
3158                                         goto failed_add_dir_block;
3159                                 pctx->errcode = ext2fs_extent_goto(ehandle,
3160                                                                 extent.e_lblk);
3161                                 if (pctx->errcode)
3162                                         goto failed_add_dir_block;
3163                                 last_lblk = extent.e_lblk + extent.e_len - 1;
3164                                 failed_csum = 0;
3165                         }
3166                 }
3167 alloc_later:
3168                 if (is_dir) {
3169                         while (++pb->last_db_block <
3170                                (e2_blkcnt_t) extent.e_lblk) {
3171                                 pctx->errcode = ext2fs_add_dir_block2(
3172                                                         ctx->fs->dblist,
3173                                                         pb->ino, 0,
3174                                                         pb->last_db_block);
3175                                 if (pctx->errcode) {
3176                                         pctx->blk = 0;
3177                                         pctx->num = pb->last_db_block;
3178                                         goto failed_add_dir_block;
3179                                 }
3180                         }
3181
3182                         for (i = 0; i < extent.e_len; i++) {
3183                                 pctx->errcode = ext2fs_add_dir_block2(
3184                                                         ctx->fs->dblist,
3185                                                         pctx->ino,
3186                                                         extent.e_pblk + i,
3187                                                         extent.e_lblk + i);
3188                                 if (pctx->errcode) {
3189                                         pctx->blk = extent.e_pblk + i;
3190                                         pctx->num = extent.e_lblk + i;
3191                                 failed_add_dir_block:
3192                                         fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
3193                                         /* Should never get here */
3194                                         ctx->flags |= E2F_FLAG_ABORT;
3195                                         return;
3196                                 }
3197                         }
3198                         if (extent.e_len > 0)
3199                                 pb->last_db_block = extent.e_lblk + extent.e_len - 1;
3200                 }
3201                 if (has_unaligned_cluster_map(ctx, pb->previous_block,
3202                                               pb->last_block,
3203                                               extent.e_pblk,
3204                                               extent.e_lblk)) {
3205                         for (i = 0; i < extent.e_len; i++) {
3206                                 pctx->blk = extent.e_lblk + i;
3207                                 pctx->blk2 = extent.e_pblk + i;
3208                                 fix_problem(ctx, PR_1_MISALIGNED_CLUSTER, pctx);
3209                                 mark_block_used(ctx, extent.e_pblk + i);
3210                                 mark_block_used(ctx, extent.e_pblk + i);
3211                         }
3212                 }
3213
3214                 /*
3215                  * Check whether first cluster got marked in previous iteration.
3216                  */
3217                 if (ctx->fs->cluster_ratio_bits &&
3218                     pb->previous_block &&
3219                     (EXT2FS_B2C(ctx->fs, extent.e_pblk) ==
3220                      EXT2FS_B2C(ctx->fs, pb->previous_block)))
3221                         /* Set blk to the beginning of next cluster. */
3222                         blk = EXT2FS_C2B(
3223                                 ctx->fs,
3224                                 EXT2FS_B2C(ctx->fs, extent.e_pblk) + 1);
3225                 else
3226                         /* Set blk to the beginning of current cluster. */
3227                         blk = EXT2FS_C2B(ctx->fs,
3228                                          EXT2FS_B2C(ctx->fs, extent.e_pblk));
3229
3230                 if (blk < extent.e_pblk + extent.e_len) {
3231                         mark_blocks_used(ctx, blk,
3232                                          extent.e_pblk + extent.e_len - blk);
3233                         n = DIV_ROUND_UP(extent.e_pblk + extent.e_len - blk,
3234                                          EXT2FS_CLUSTER_RATIO(ctx->fs));
3235                         pb->num_blocks += n;
3236                 }
3237                 pb->last_block = extent.e_lblk + extent.e_len - 1;
3238                 pb->previous_block = extent.e_pblk + extent.e_len - 1;
3239                 start_block = pb->last_block = last_lblk;
3240                 if (is_leaf && !is_dir &&
3241                     !(extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT))
3242                         pb->last_init_lblock = last_lblk;
3243         next:
3244                 pctx->errcode = ext2fs_extent_get(ehandle,
3245                                                   EXT2_EXTENT_NEXT_SIB,
3246                                                   &extent);
3247         }
3248
3249         /* Failed csum but passes checks?  Ask to fix checksum. */
3250         if (failed_csum &&
3251             fix_problem(ctx, PR_1_EXTENT_ONLY_CSUM_INVALID, pctx)) {
3252                 pb->inode_modified = 1;
3253                 pctx->errcode = ext2fs_extent_replace(ehandle, 0, &extent);
3254                 if (pctx->errcode)
3255                         return;
3256         }
3257
3258         if (pctx->errcode == EXT2_ET_EXTENT_NO_NEXT)
3259                 pctx->errcode = 0;
3260 }
3261
3262 static void check_blocks_extents(e2fsck_t ctx, struct problem_context *pctx,
3263                                  struct process_block_struct *pb)
3264 {
3265         struct ext2_extent_info info;
3266         struct ext2_inode       *inode = pctx->inode;
3267         ext2_extent_handle_t    ehandle;
3268         ext2_filsys             fs = ctx->fs;
3269         ext2_ino_t              ino = pctx->ino;
3270         errcode_t               retval;
3271         blk64_t                 eof_lblk;
3272         struct ext3_extent_header       *eh;
3273
3274         /* Check for a proper extent header... */
3275         eh = (struct ext3_extent_header *) &inode->i_block[0];
3276         retval = ext2fs_extent_header_verify(eh, sizeof(inode->i_block));
3277         if (retval) {
3278                 if (fix_problem(ctx, PR_1_MISSING_EXTENT_HEADER, pctx))
3279                         e2fsck_clear_inode(ctx, ino, inode, 0,
3280                                            "check_blocks_extents");
3281                 pctx->errcode = 0;
3282                 return;
3283         }
3284
3285         /* ...since this function doesn't fail if i_block is zeroed. */
3286         pctx->errcode = ext2fs_extent_open2(fs, ino, inode, &ehandle);
3287         if (pctx->errcode) {
3288                 if (fix_problem(ctx, PR_1_READ_EXTENT, pctx))
3289                         e2fsck_clear_inode(ctx, ino, inode, 0,
3290                                            "check_blocks_extents");
3291                 pctx->errcode = 0;
3292                 return;
3293         }
3294
3295         retval = ext2fs_extent_get_info(ehandle, &info);
3296         if (retval == 0) {
3297                 int max_depth = info.max_depth;
3298
3299                 if (max_depth >= MAX_EXTENT_DEPTH_COUNT)
3300                         max_depth = MAX_EXTENT_DEPTH_COUNT-1;
3301                 ctx->extent_depth_count[max_depth]++;
3302         }
3303
3304         /* Check maximum extent depth */
3305         pctx->blk = info.max_depth;
3306         pctx->blk2 = ext2fs_max_extent_depth(ehandle);
3307         if (pctx->blk2 < pctx->blk &&
3308             fix_problem(ctx, PR_1_EXTENT_BAD_MAX_DEPTH, pctx))
3309                 pb->eti.force_rebuild = 1;
3310
3311         /* Can we collect extent tree level stats? */
3312         pctx->blk = MAX_EXTENT_DEPTH_COUNT;
3313         if (pctx->blk2 > pctx->blk)
3314                 fix_problem(ctx, PR_1E_MAX_EXTENT_TREE_DEPTH, pctx);
3315         memset(pb->eti.ext_info, 0, sizeof(pb->eti.ext_info));
3316         pb->eti.ino = pb->ino;
3317
3318         pb->next_lblock = 0;
3319
3320         eof_lblk = ((EXT2_I_SIZE(inode) + fs->blocksize - 1) >>
3321                 EXT2_BLOCK_SIZE_BITS(fs->super)) - 1;
3322         scan_extent_node(ctx, pctx, pb, 0, 0, eof_lblk, ehandle, 1);
3323         if (pctx->errcode &&
3324             fix_problem(ctx, PR_1_EXTENT_ITERATE_FAILURE, pctx)) {
3325                 pb->num_blocks = 0;
3326                 inode->i_blocks = 0;
3327                 e2fsck_clear_inode(ctx, ino, inode, E2F_FLAG_RESTART,
3328                                    "check_blocks_extents");
3329                 pctx->errcode = 0;
3330         }
3331         ext2fs_extent_free(ehandle);
3332
3333         /* Rebuild unless it's a dir and we're rehashing it */
3334         if (LINUX_S_ISDIR(inode->i_mode) &&
3335             e2fsck_dir_will_be_rehashed(ctx, ino))
3336                 return;
3337
3338         if (ctx->options & E2F_OPT_CONVERT_BMAP)
3339                 e2fsck_rebuild_extents_later(ctx, ino);
3340         else
3341                 e2fsck_should_rebuild_extents(ctx, pctx, &pb->eti, &info);
3342 }
3343
3344 /*
3345  * In fact we don't need to check blocks for an inode with inline data
3346  * because this inode doesn't have any blocks.  In this function all
3347  * we need to do is add this inode into dblist when it is a directory.
3348  */
3349 static void check_blocks_inline_data(e2fsck_t ctx, struct problem_context *pctx,
3350                                      struct process_block_struct *pb)
3351 {
3352         int     flags;
3353         size_t  inline_data_size = 0;
3354
3355         if (!pb->is_dir) {
3356                 pctx->errcode = 0;
3357                 return;
3358         }
3359
3360         /* Process the dirents in i_block[] as the "first" block. */
3361         pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist, pb->ino, 0, 0);
3362         if (pctx->errcode)
3363                 goto err;
3364
3365         /* Process the dirents in the EA as a "second" block. */
3366         flags = ctx->fs->flags;
3367         ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3368         pctx->errcode = ext2fs_inline_data_size(ctx->fs, pb->ino,
3369                                                 &inline_data_size);
3370         ctx->fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
3371                          (ctx->fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
3372         if (pctx->errcode) {
3373                 pctx->errcode = 0;
3374                 return;
3375         }
3376
3377         if (inline_data_size <= EXT4_MIN_INLINE_DATA_SIZE)
3378                 return;
3379
3380         pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist, pb->ino, 0, 1);
3381         if (pctx->errcode)
3382                 goto err;
3383
3384         return;
3385 err:
3386         pctx->blk = 0;
3387         pctx->num = 0;
3388         fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
3389         ctx->flags |= E2F_FLAG_ABORT;
3390 }
3391
3392 /*
3393  * This subroutine is called on each inode to account for all of the
3394  * blocks used by that inode.
3395  */
3396 static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
3397                          char *block_buf, const struct ea_quota *ea_ibody_quota)
3398 {
3399         ext2_filsys fs = ctx->fs;
3400         struct process_block_struct pb;
3401         ext2_ino_t      ino = pctx->ino;
3402         struct ext2_inode *inode = pctx->inode;
3403         unsigned        bad_size = 0;
3404         int             dirty_inode = 0;
3405         int             extent_fs;
3406         int             inlinedata_fs;
3407         __u64           size;
3408         struct ea_quota ea_block_quota;
3409
3410         pb.ino = ino;
3411         pb.num_blocks = EXT2FS_B2C(ctx->fs,
3412                                    ea_ibody_quota ? ea_ibody_quota->blocks : 0);
3413         pb.last_block = ~0;
3414         pb.last_init_lblock = -1;
3415         pb.last_db_block = -1;
3416         pb.num_illegal_blocks = 0;
3417         pb.suppress = 0; pb.clear = 0;
3418         pb.fragmented = 0;
3419         pb.compressed = 0;
3420         pb.previous_block = 0;
3421         pb.is_dir = LINUX_S_ISDIR(inode->i_mode);
3422         pb.is_reg = LINUX_S_ISREG(inode->i_mode);
3423         pb.max_blocks = 1U << (31 - fs->super->s_log_block_size);
3424         pb.inode = inode;
3425         pb.pctx = pctx;
3426         pb.ctx = ctx;
3427         pb.inode_modified = 0;
3428         pb.eti.force_rebuild = 0;
3429         pctx->ino = ino;
3430         pctx->errcode = 0;
3431
3432         extent_fs = ext2fs_has_feature_extents(ctx->fs->super);
3433         inlinedata_fs = ext2fs_has_feature_inline_data(ctx->fs->super);
3434
3435         if (check_ext_attr(ctx, pctx, block_buf, &ea_block_quota)) {
3436                 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
3437                         goto out;
3438                 pb.num_blocks += EXT2FS_B2C(ctx->fs, ea_block_quota.blocks);
3439         }
3440
3441         if (inlinedata_fs && (inode->i_flags & EXT4_INLINE_DATA_FL))
3442                 check_blocks_inline_data(ctx, pctx, &pb);
3443         else if (ext2fs_inode_has_valid_blocks2(fs, inode)) {
3444                 if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL))
3445                         check_blocks_extents(ctx, pctx, &pb);
3446                 else {
3447                         int flags;
3448                         /*
3449                          * If we've modified the inode, write it out before
3450                          * iterate() tries to use it.
3451                          */
3452                         if (dirty_inode) {
3453                                 e2fsck_write_inode(ctx, ino, inode,
3454                                                    "check_blocks");
3455                                 dirty_inode = 0;
3456                         }
3457                         flags = fs->flags;
3458                         fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3459                         pctx->errcode = ext2fs_block_iterate3(fs, ino,
3460                                                 pb.is_dir ? BLOCK_FLAG_HOLE : 0,
3461                                                 block_buf, process_block, &pb);
3462                         /*
3463                          * We do not have uninitialized extents in non extent
3464                          * files.
3465                          */
3466                         pb.last_init_lblock = pb.last_block;
3467                         /*
3468                          * If iterate() changed a block mapping, we have to
3469                          * re-read the inode.  If we decide to clear the
3470                          * inode after clearing some stuff, we'll re-write the
3471                          * bad mappings into the inode!
3472                          */
3473                         if (pb.inode_modified)
3474                                 e2fsck_read_inode(ctx, ino, inode,
3475                                                   "check_blocks");
3476                         fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
3477                                     (fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
3478
3479                         if (ctx->options & E2F_OPT_CONVERT_BMAP) {
3480 #ifdef DEBUG
3481                                 printf("bmap rebuild ino=%d\n", ino);
3482 #endif
3483                                 if (!LINUX_S_ISDIR(inode->i_mode) ||
3484                                     !e2fsck_dir_will_be_rehashed(ctx, ino))
3485                                         e2fsck_rebuild_extents_later(ctx, ino);
3486                         }
3487                 }
3488         }
3489         end_problem_latch(ctx, PR_LATCH_BLOCK);
3490         end_problem_latch(ctx, PR_LATCH_TOOBIG);
3491         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
3492                 goto out;
3493         if (pctx->errcode)
3494                 fix_problem(ctx, PR_1_BLOCK_ITERATE, pctx);
3495
3496         if (pb.fragmented && pb.num_blocks < fs->super->s_blocks_per_group) {
3497                 if (LINUX_S_ISDIR(inode->i_mode))
3498                         ctx->fs_fragmented_dir++;
3499                 else
3500                         ctx->fs_fragmented++;
3501         }
3502
3503         if (pb.clear) {
3504                 e2fsck_clear_inode(ctx, ino, inode, E2F_FLAG_RESTART,
3505                                    "check_blocks");
3506                 return;
3507         }
3508
3509         if (inode->i_flags & EXT2_INDEX_FL) {
3510                 if (handle_htree(ctx, pctx, ino, inode, block_buf)) {
3511                         inode->i_flags &= ~EXT2_INDEX_FL;
3512                         dirty_inode++;
3513                 } else {
3514                         e2fsck_add_dx_dir(ctx, ino, inode, pb.last_block+1);
3515                 }
3516         }
3517
3518         if (!pb.num_blocks && pb.is_dir &&
3519             !(inode->i_flags & EXT4_INLINE_DATA_FL)) {
3520                 if (fix_problem(ctx, PR_1_ZERO_LENGTH_DIR, pctx)) {
3521                         e2fsck_clear_inode(ctx, ino, inode, 0, "check_blocks");
3522                         ctx->fs_directory_count--;
3523                         return;
3524                 }
3525         }
3526
3527         if (ino != quota_type2inum(PRJQUOTA, fs->super) &&
3528             ino != fs->super->s_orphan_file_inum &&
3529             (ino == EXT2_ROOT_INO || ino >= EXT2_FIRST_INODE(ctx->fs->super)) &&
3530             !(inode->i_flags & EXT4_EA_INODE_FL)) {
3531                 quota_data_add(ctx->qctx, (struct ext2_inode_large *) inode,
3532                                ino,
3533                                pb.num_blocks * EXT2_CLUSTER_SIZE(fs->super));
3534                 quota_data_inodes(ctx->qctx, (struct ext2_inode_large *) inode,
3535                                   ino, (ea_ibody_quota ?
3536                                         ea_ibody_quota->inodes : 0) +
3537                                                 ea_block_quota.inodes + 1);
3538         }
3539
3540         if (!ext2fs_has_feature_huge_file(fs->super) ||
3541             !(inode->i_flags & EXT4_HUGE_FILE_FL))
3542                 pb.num_blocks *= (fs->blocksize / 512);
3543         pb.num_blocks *= EXT2FS_CLUSTER_RATIO(fs);
3544 #if 0
3545         printf("inode %u, i_size = %u, last_block = %llu, i_blocks=%llu, num_blocks = %llu\n",
3546                ino, inode->i_size, (unsigned long long) pb.last_block,
3547                (unsigned long long) ext2fs_inode_i_blocks(fs, inode),
3548                (unsigned long long) pb.num_blocks);
3549 #endif
3550         size = EXT2_I_SIZE(inode);
3551         if (pb.is_dir) {
3552                 unsigned nblock = size >> EXT2_BLOCK_SIZE_BITS(fs->super);
3553                 if (inode->i_flags & EXT4_INLINE_DATA_FL) {
3554                         int flags;
3555                         size_t sz = 0;
3556                         errcode_t err;
3557
3558                         flags = ctx->fs->flags;
3559                         ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3560                         err = ext2fs_inline_data_size(ctx->fs, pctx->ino,
3561                                                       &sz);
3562                         ctx->fs->flags = (flags &
3563                                           EXT2_FLAG_IGNORE_CSUM_ERRORS) |
3564                                          (ctx->fs->flags &
3565                                           ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
3566                         if (err || sz != size) {
3567                                 bad_size = 7;
3568                                 pctx->num = sz;
3569                         }
3570                 } else if (size & (fs->blocksize - 1))
3571                         bad_size = 5;
3572                 else if (nblock > (pb.last_block + 1))
3573                         bad_size = 1;
3574                 else if (nblock < (pb.last_block + 1)) {
3575                         if (((pb.last_block + 1) - nblock) >
3576                             fs->super->s_prealloc_dir_blocks)
3577                                 bad_size = 2;
3578                 }
3579         } else {
3580                 if ((pb.last_init_lblock >= 0) &&
3581                     /* Do not allow initialized allocated blocks past i_size*/
3582                     (size < (__u64)pb.last_init_lblock * fs->blocksize) &&
3583                     !(inode->i_flags & EXT4_VERITY_FL))
3584                         bad_size = 3;
3585                 else if (!(extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) &&
3586                          size > ext2_max_sizes[fs->super->s_log_block_size])
3587                         /* too big for a direct/indirect-mapped file */
3588                         bad_size = 4;
3589                 else if ((extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) &&
3590                          size >
3591                          ((1ULL << (32 + EXT2_BLOCK_SIZE_BITS(fs->super))) - 1))
3592                         /* too big for an extent-based file - 32bit ee_block */
3593                         bad_size = 6;
3594         }
3595         /* i_size for symlinks is checked elsewhere */
3596         if (bad_size && !LINUX_S_ISLNK(inode->i_mode)) {
3597                 /* Did inline_data set pctx->num earlier? */
3598                 if (bad_size != 7)
3599                         pctx->num = (pb.last_block + 1) * fs->blocksize;
3600                 pctx->group = bad_size;
3601                 if (fix_problem(ctx, PR_1_BAD_I_SIZE, pctx)) {
3602                         ext2fs_inode_size_set(fs, inode, pctx->num);
3603                         if (EXT2_I_SIZE(inode) == 0 &&
3604                             (inode->i_flags & EXT4_INLINE_DATA_FL)) {
3605                                 memset(inode->i_block, 0,
3606                                        sizeof(inode->i_block));
3607                                 inode->i_flags &= ~EXT4_INLINE_DATA_FL;
3608                         }
3609                         dirty_inode++;
3610                 }
3611                 pctx->num = 0;
3612         }
3613         if (LINUX_S_ISREG(inode->i_mode) &&
3614             ext2fs_needs_large_file_feature(EXT2_I_SIZE(inode)))
3615                 ctx->large_files++;
3616         if ((fs->super->s_creator_os != EXT2_OS_HURD) &&
3617             ((pb.num_blocks != ext2fs_inode_i_blocks(fs, inode)) ||
3618              (ext2fs_has_feature_huge_file(fs->super) &&
3619               (inode->i_flags & EXT4_HUGE_FILE_FL) &&
3620               (inode->osd2.linux2.l_i_blocks_hi != 0)))) {
3621                 pctx->num = pb.num_blocks;
3622                 if (fix_problem(ctx, PR_1_BAD_I_BLOCKS, pctx)) {
3623                         inode->i_blocks = pb.num_blocks;
3624                         inode->osd2.linux2.l_i_blocks_hi = pb.num_blocks >> 32;
3625                         dirty_inode++;
3626                 }
3627                 pctx->num = 0;
3628         }
3629
3630         /*
3631          * The kernel gets mad if we ask it to allocate bigalloc clusters to
3632          * a block mapped file, so rebuild it as an extent file.  We can skip
3633          * symlinks because they're never rewritten.
3634          */
3635         if (ext2fs_has_feature_bigalloc(fs->super) &&
3636             (LINUX_S_ISREG(inode->i_mode) || LINUX_S_ISDIR(inode->i_mode)) &&
3637             ext2fs_inode_data_blocks2(fs, inode) > 0 &&
3638             (ino == EXT2_ROOT_INO || ino >= EXT2_FIRST_INO(fs->super)) &&
3639             !(inode->i_flags & (EXT4_EXTENTS_FL | EXT4_INLINE_DATA_FL)) &&
3640             fix_problem(ctx, PR_1_NO_BIGALLOC_BLOCKMAP_FILES, pctx)) {
3641                 pctx->errcode = e2fsck_rebuild_extents_later(ctx, ino);
3642                 if (pctx->errcode)
3643                         goto out;
3644         }
3645
3646         if (ctx->dirs_to_hash && pb.is_dir &&
3647             !(ctx->lost_and_found && ctx->lost_and_found == ino) &&
3648             !(inode->i_flags & EXT2_INDEX_FL) &&
3649             ((inode->i_size / fs->blocksize) >= 3))
3650                 e2fsck_rehash_dir_later(ctx, ino);
3651
3652 out:
3653         if (dirty_inode)
3654                 e2fsck_write_inode(ctx, ino, inode, "check_blocks");
3655 }
3656
3657 #if 0
3658 /*
3659  * Helper function called by process block when an illegal block is
3660  * found.  It returns a description about why the block is illegal
3661  */
3662 static char *describe_illegal_block(ext2_filsys fs, blk64_t block)
3663 {
3664         blk64_t super;
3665         int     i;
3666         static char     problem[80];
3667
3668         super = fs->super->s_first_data_block;
3669         strcpy(problem, "PROGRAMMING ERROR: Unknown reason for illegal block");
3670         if (block < super) {
3671                 sprintf(problem, "< FIRSTBLOCK (%u)", super);
3672                 return(problem);
3673         } else if (block >= ext2fs_blocks_count(fs->super)) {
3674                 sprintf(problem, "> BLOCKS (%u)", ext2fs_blocks_count(fs->super));
3675                 return(problem);
3676         }
3677         for (i = 0; i < fs->group_desc_count; i++) {
3678                 if (block == super) {
3679                         sprintf(problem, "is the superblock in group %d", i);
3680                         break;
3681                 }
3682                 if (block > super &&
3683                     block <= (super + fs->desc_blocks)) {
3684                         sprintf(problem, "is in the group descriptors "
3685                                 "of group %d", i);
3686                         break;
3687                 }
3688                 if (block == ext2fs_block_bitmap_loc(fs, i)) {
3689                         sprintf(problem, "is the block bitmap of group %d", i);
3690                         break;
3691                 }
3692                 if (block == ext2fs_inode_bitmap_loc(fs, i)) {
3693                         sprintf(problem, "is the inode bitmap of group %d", i);
3694                         break;
3695                 }
3696                 if (block >= ext2fs_inode_table_loc(fs, i) &&
3697                     (block < ext2fs_inode_table_loc(fs, i)
3698                      + fs->inode_blocks_per_group)) {
3699                         sprintf(problem, "is in the inode table of group %d",
3700                                 i);
3701                         break;
3702                 }
3703                 super += fs->super->s_blocks_per_group;
3704         }
3705         return(problem);
3706 }
3707 #endif
3708
3709 /*
3710  * This is a helper function for check_blocks().
3711  */
3712 static int process_block(ext2_filsys fs,
3713                   blk64_t       *block_nr,
3714                   e2_blkcnt_t blockcnt,
3715                   blk64_t ref_block EXT2FS_ATTR((unused)),
3716                   int ref_offset EXT2FS_ATTR((unused)),
3717                   void *priv_data)
3718 {
3719         struct process_block_struct *p;
3720         struct problem_context *pctx;
3721         blk64_t blk = *block_nr;
3722         int     ret_code = 0;
3723         problem_t       problem = 0;
3724         e2fsck_t        ctx;
3725
3726         p = (struct process_block_struct *) priv_data;
3727         pctx = p->pctx;
3728         ctx = p->ctx;
3729
3730         /*
3731          * For a directory, add logical block zero for processing even if it's
3732          * not mapped or we'll be perennially stuck with broken "." and ".."
3733          * entries.
3734          */
3735         if (p->is_dir && blockcnt == 0 && blk == 0) {
3736                 pctx->errcode = ext2fs_add_dir_block2(fs->dblist, p->ino, 0, 0);
3737                 if (pctx->errcode) {
3738                         pctx->blk = blk;
3739                         pctx->num = blockcnt;
3740                         goto failed_add_dir_block;
3741                 }
3742                 p->last_db_block++;
3743         }
3744
3745         if (blk == 0)
3746                 return 0;
3747
3748 #if 0
3749         printf("Process_block, inode %lu, block %u, #%d\n", p->ino, blk,
3750                blockcnt);
3751 #endif
3752
3753         /*
3754          * Simplistic fragmentation check.  We merely require that the
3755          * file be contiguous.  (Which can never be true for really
3756          * big files that are greater than a block group.)
3757          */
3758         if (p->previous_block && p->ino != EXT2_RESIZE_INO) {
3759                 if (p->previous_block+1 != blk) {
3760                         if (ctx->options & E2F_OPT_FRAGCHECK) {
3761                                 char type = '?';
3762
3763                                 if (p->is_dir)
3764                                         type = 'd';
3765                                 else if (p->is_reg)
3766                                         type = 'f';
3767
3768                                 printf(_("%6lu(%c): expecting %6lu "
3769                                          "got phys %6lu (blkcnt %lld)\n"),
3770                                        (unsigned long) pctx->ino, type,
3771                                        (unsigned long) p->previous_block+1,
3772                                        (unsigned long) blk,
3773                                        (long long) blockcnt);
3774                         }
3775                         p->fragmented = 1;
3776                 }
3777         }
3778
3779         if (p->is_dir && !ext2fs_has_feature_largedir(fs->super) &&
3780             !pctx->inode->i_size_high &&
3781             blockcnt > (1 << (21 - fs->super->s_log_block_size)))
3782                 problem = PR_1_TOOBIG_DIR;
3783         if (p->is_dir && p->num_blocks + 1 >= p->max_blocks)
3784                 problem = PR_1_TOOBIG_DIR;
3785         if (p->is_reg && p->num_blocks + 1 >= p->max_blocks)
3786                 problem = PR_1_TOOBIG_REG;
3787         if (!p->is_dir && !p->is_reg && blockcnt > 0)
3788                 problem = PR_1_TOOBIG_SYMLINK;
3789
3790         if (blk < fs->super->s_first_data_block ||
3791             blk >= ext2fs_blocks_count(fs->super))
3792                 problem = PR_1_ILLEGAL_BLOCK_NUM;
3793
3794         /*
3795          * If this IND/DIND/TIND block is squatting atop some critical metadata
3796          * (group descriptors, superblock, bitmap, inode table), any write to
3797          * "fix" mapping problems will destroy the metadata.  We'll let pass 1b
3798          * fix that and restart fsck.
3799          */
3800         if (blockcnt < 0 &&
3801             p->ino != EXT2_RESIZE_INO &&
3802             blk < ctx->fs->super->s_blocks_count &&
3803             ext2fs_test_block_bitmap2(ctx->block_metadata_map, blk)) {
3804                 pctx->blk = blk;
3805                 fix_problem(ctx, PR_1_CRITICAL_METADATA_COLLISION, pctx);
3806                 if ((ctx->options & E2F_OPT_NO) == 0)
3807                         ctx->flags |= E2F_FLAG_RESTART_LATER;
3808         }
3809
3810         if (problem) {
3811                 p->num_illegal_blocks++;
3812                 /*
3813                  * A bit of subterfuge here -- we're trying to fix a block
3814                  * mapping, but the IND/DIND/TIND block could have collided
3815                  * with some critical metadata.  So, fix the in-core mapping so
3816                  * iterate won't go insane, but return 0 instead of
3817                  * BLOCK_CHANGED so that it won't write the remapping out to
3818                  * our multiply linked block.
3819                  *
3820                  * Even if we previously determined that an *IND block
3821                  * conflicts with critical metadata, we must still try to
3822                  * iterate the *IND block as if it is an *IND block to find and
3823                  * mark the blocks it points to.  Better to be overly cautious
3824                  * with the used_blocks map so that we don't move the *IND
3825                  * block to a block that's really in use!
3826                  */
3827                 if (p->ino != EXT2_RESIZE_INO &&
3828                     ref_block != 0 &&
3829                     ext2fs_test_block_bitmap2(ctx->block_metadata_map,
3830                                               ref_block)) {
3831                         *block_nr = 0;
3832                         return 0;
3833                 }
3834                 if (!p->suppress && (p->num_illegal_blocks % 12) == 0) {
3835                         if (fix_problem(ctx, PR_1_TOO_MANY_BAD_BLOCKS, pctx)) {
3836                                 p->clear = 1;
3837                                 return BLOCK_ABORT;
3838                         }
3839                         if (fix_problem(ctx, PR_1_SUPPRESS_MESSAGES, pctx)) {
3840                                 p->suppress = 1;
3841                                 set_latch_flags(PR_LATCH_BLOCK,
3842                                                 PRL_SUPPRESS, 0);
3843                         }
3844                 }
3845                 pctx->blk = blk;
3846                 pctx->blkcount = blockcnt;
3847                 if (fix_problem(ctx, problem, pctx)) {
3848                         blk = *block_nr = 0;
3849                         ret_code = BLOCK_CHANGED;
3850                         p->inode_modified = 1;
3851                         /*
3852                          * If the directory block is too big and is beyond the
3853                          * end of the FS, don't bother trying to add it for
3854                          * processing -- the kernel would never have created a
3855                          * directory this large, and we risk an ENOMEM abort.
3856                          * In any case, the toobig handler for extent-based
3857                          * directories also doesn't feed toobig blocks to
3858                          * pass 2.
3859                          */
3860                         if (problem == PR_1_TOOBIG_DIR)
3861                                 return ret_code;
3862                         goto mark_dir;
3863                 } else
3864                         return 0;
3865         }
3866
3867         if (p->ino == EXT2_RESIZE_INO) {
3868                 /*
3869                  * The resize inode has already be sanity checked
3870                  * during pass #0 (the superblock checks).  All we
3871                  * have to do is mark the double indirect block as
3872                  * being in use; all of the other blocks are handled
3873                  * by mark_table_blocks()).
3874                  */
3875                 if (blockcnt == BLOCK_COUNT_DIND)
3876                         mark_block_used(ctx, blk);
3877                 p->num_blocks++;
3878         } else if (!(ctx->fs->cluster_ratio_bits &&
3879                      p->previous_block &&
3880                      (EXT2FS_B2C(ctx->fs, blk) ==
3881                       EXT2FS_B2C(ctx->fs, p->previous_block)) &&
3882                      (blk & EXT2FS_CLUSTER_MASK(ctx->fs)) ==
3883                      ((unsigned) blockcnt & EXT2FS_CLUSTER_MASK(ctx->fs)))) {
3884                 mark_block_used(ctx, blk);
3885                 p->num_blocks++;
3886         } else if (has_unaligned_cluster_map(ctx, p->previous_block,
3887                                              p->last_block, blk, blockcnt)) {
3888                 pctx->blk = blockcnt;
3889                 pctx->blk2 = blk;
3890                 fix_problem(ctx, PR_1_MISALIGNED_CLUSTER, pctx);
3891                 mark_block_used(ctx, blk);
3892                 mark_block_used(ctx, blk);
3893         }
3894         if (blockcnt >= 0)
3895                 p->last_block = blockcnt;
3896         p->previous_block = blk;
3897 mark_dir:
3898         if (p->is_dir && (blockcnt >= 0)) {
3899                 while (++p->last_db_block < blockcnt) {
3900                         pctx->errcode = ext2fs_add_dir_block2(fs->dblist,
3901                                                               p->ino, 0,
3902                                                               p->last_db_block);
3903                         if (pctx->errcode) {
3904                                 pctx->blk = 0;
3905                                 pctx->num = p->last_db_block;
3906                                 goto failed_add_dir_block;
3907                         }
3908                 }
3909                 pctx->errcode = ext2fs_add_dir_block2(fs->dblist, p->ino,
3910                                                       blk, blockcnt);
3911                 if (pctx->errcode) {
3912                         pctx->blk = blk;
3913                         pctx->num = blockcnt;
3914                 failed_add_dir_block:
3915                         fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
3916                         /* Should never get here */
3917                         ctx->flags |= E2F_FLAG_ABORT;
3918                         return BLOCK_ABORT;
3919                 }
3920         }
3921         return ret_code;
3922 }
3923
3924 static int process_bad_block(ext2_filsys fs,
3925                       blk64_t *block_nr,
3926                       e2_blkcnt_t blockcnt,
3927                       blk64_t ref_block EXT2FS_ATTR((unused)),
3928                       int ref_offset EXT2FS_ATTR((unused)),
3929                       void *priv_data)
3930 {
3931         struct process_block_struct *p;
3932         blk64_t         blk = *block_nr;
3933         blk64_t         first_block;
3934         dgrp_t          i;
3935         struct problem_context *pctx;
3936         e2fsck_t        ctx;
3937
3938         if (!blk)
3939                 return 0;
3940
3941         p = (struct process_block_struct *) priv_data;
3942         ctx = p->ctx;
3943         pctx = p->pctx;
3944
3945         pctx->ino = EXT2_BAD_INO;
3946         pctx->blk = blk;
3947         pctx->blkcount = blockcnt;
3948
3949         if ((blk < fs->super->s_first_data_block) ||
3950             (blk >= ext2fs_blocks_count(fs->super))) {
3951                 if (fix_problem(ctx, PR_1_BB_ILLEGAL_BLOCK_NUM, pctx)) {
3952                         *block_nr = 0;
3953                         return BLOCK_CHANGED;
3954                 } else
3955                         return 0;
3956         }
3957
3958         if (blockcnt < 0) {
3959                 if (ext2fs_test_block_bitmap2(p->fs_meta_blocks, blk)) {
3960                         p->bbcheck = 1;
3961                         if (fix_problem(ctx, PR_1_BB_FS_BLOCK, pctx)) {
3962                                 *block_nr = 0;
3963                                 return BLOCK_CHANGED;
3964                         }
3965                 } else if (ext2fs_test_block_bitmap2(ctx->block_found_map,
3966                                                     blk)) {
3967                         p->bbcheck = 1;
3968                         if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK,
3969                                         pctx)) {
3970                                 *block_nr = 0;
3971                                 return BLOCK_CHANGED;
3972                         }
3973                         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
3974                                 return BLOCK_ABORT;
3975                 } else
3976                         mark_block_used(ctx, blk);
3977                 return 0;
3978         }
3979 #if 0
3980         printf ("DEBUG: Marking %u as bad.\n", blk);
3981 #endif
3982         ctx->fs_badblocks_count++;
3983         /*
3984          * If the block is not used, then mark it as used and return.
3985          * If it is already marked as found, this must mean that
3986          * there's an overlap between the filesystem table blocks
3987          * (bitmaps and inode table) and the bad block list.
3988          */
3989         if (!ext2fs_test_block_bitmap2(ctx->block_found_map, blk)) {
3990                 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
3991                 return 0;
3992         }
3993         /*
3994          * Try to find the where the filesystem block was used...
3995          */
3996         first_block = fs->super->s_first_data_block;
3997
3998         for (i = 0; i < fs->group_desc_count; i++ ) {
3999                 pctx->group = i;
4000                 pctx->blk = blk;
4001                 if (!ext2fs_bg_has_super(fs, i))
4002                         goto skip_super;
4003                 if (blk == first_block) {
4004                         if (i == 0) {
4005                                 if (fix_problem(ctx,
4006                                                 PR_1_BAD_PRIMARY_SUPERBLOCK,
4007                                                 pctx)) {
4008                                         *block_nr = 0;
4009                                         return BLOCK_CHANGED;
4010                                 }
4011                                 return 0;
4012                         }
4013                         fix_problem(ctx, PR_1_BAD_SUPERBLOCK, pctx);
4014                         return 0;
4015                 }
4016                 if ((blk > first_block) &&
4017                     (blk <= first_block + fs->desc_blocks)) {
4018                         if (i == 0) {
4019                                 pctx->blk = *block_nr;
4020                                 if (fix_problem(ctx,
4021                         PR_1_BAD_PRIMARY_GROUP_DESCRIPTOR, pctx)) {
4022                                         *block_nr = 0;
4023                                         return BLOCK_CHANGED;
4024                                 }
4025                                 return 0;
4026                         }
4027                         fix_problem(ctx, PR_1_BAD_GROUP_DESCRIPTORS, pctx);
4028                         return 0;
4029                 }
4030         skip_super:
4031                 if (blk == ext2fs_block_bitmap_loc(fs, i)) {
4032                         if (fix_problem(ctx, PR_1_BB_BAD_BLOCK, pctx)) {
4033                                 ctx->invalid_block_bitmap_flag[i]++;
4034                                 ctx->invalid_bitmaps++;
4035                         }
4036                         return 0;
4037                 }
4038                 if (blk == ext2fs_inode_bitmap_loc(fs, i)) {
4039                         if (fix_problem(ctx, PR_1_IB_BAD_BLOCK, pctx)) {
4040                                 ctx->invalid_inode_bitmap_flag[i]++;
4041                                 ctx->invalid_bitmaps++;
4042                         }
4043                         return 0;
4044                 }
4045                 if ((blk >= ext2fs_inode_table_loc(fs, i)) &&
4046                     (blk < (ext2fs_inode_table_loc(fs, i) +
4047                             fs->inode_blocks_per_group))) {
4048                         /*
4049                          * If there are bad blocks in the inode table,
4050                          * the inode scan code will try to do
4051                          * something reasonable automatically.
4052                          */
4053                         return 0;
4054                 }
4055                 first_block += fs->super->s_blocks_per_group;
4056         }
4057         /*
4058          * If we've gotten to this point, then the only
4059          * possibility is that the bad block inode meta data
4060          * is using a bad block.
4061          */
4062         if ((blk == p->inode->i_block[EXT2_IND_BLOCK]) ||
4063             (blk == p->inode->i_block[EXT2_DIND_BLOCK]) ||
4064             (blk == p->inode->i_block[EXT2_TIND_BLOCK])) {
4065                 p->bbcheck = 1;
4066                 if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK, pctx)) {
4067                         *block_nr = 0;
4068                         return BLOCK_CHANGED;
4069                 }
4070                 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
4071                         return BLOCK_ABORT;
4072                 return 0;
4073         }
4074
4075         pctx->group = -1;
4076
4077         /* Warn user that the block wasn't claimed */
4078         fix_problem(ctx, PR_1_PROGERR_CLAIMED_BLOCK, pctx);
4079
4080         return 0;
4081 }
4082
4083 static void new_table_block(e2fsck_t ctx, blk64_t first_block, dgrp_t group,
4084                             const char *name, int num, blk64_t *new_block)
4085 {
4086         ext2_filsys fs = ctx->fs;
4087         dgrp_t          last_grp;
4088         blk64_t         old_block = *new_block;
4089         blk64_t         last_block;
4090         dgrp_t          flexbg;
4091         unsigned        flexbg_size;
4092         int             i, is_flexbg;
4093         char            *buf;
4094         struct problem_context  pctx;
4095
4096         clear_problem_context(&pctx);
4097
4098         pctx.group = group;
4099         pctx.blk = old_block;
4100         pctx.str = name;
4101
4102         /*
4103          * For flex_bg filesystems, first try to allocate the metadata
4104          * within the flex_bg, and if that fails then try finding the
4105          * space anywhere in the filesystem.
4106          */
4107         is_flexbg = ext2fs_has_feature_flex_bg(fs->super);
4108         if (is_flexbg) {
4109                 flexbg_size = 1U << fs->super->s_log_groups_per_flex;
4110                 flexbg = group / flexbg_size;
4111                 first_block = ext2fs_group_first_block2(fs,
4112                                                         flexbg_size * flexbg);
4113                 last_grp = group | (flexbg_size - 1);
4114                 if (last_grp >= fs->group_desc_count)
4115                         last_grp = fs->group_desc_count - 1;
4116                 last_block = ext2fs_group_last_block2(fs, last_grp);
4117         } else
4118                 last_block = ext2fs_group_last_block2(fs, group);
4119         pctx.errcode = ext2fs_get_free_blocks2(fs, first_block, last_block,
4120                                                num, ctx->block_found_map,
4121                                                new_block);
4122         if (is_flexbg && (pctx.errcode == EXT2_ET_BLOCK_ALLOC_FAIL))
4123                 pctx.errcode = ext2fs_get_free_blocks2(fs,
4124                                 fs->super->s_first_data_block,
4125                                 ext2fs_blocks_count(fs->super),
4126                                 num, ctx->block_found_map, new_block);
4127         if (pctx.errcode) {
4128                 pctx.num = num;
4129                 fix_problem(ctx, PR_1_RELOC_BLOCK_ALLOCATE, &pctx);
4130                 ext2fs_unmark_valid(fs);
4131                 ctx->flags |= E2F_FLAG_ABORT;
4132                 return;
4133         }
4134         pctx.errcode = ext2fs_get_mem(fs->blocksize, &buf);
4135         if (pctx.errcode) {
4136                 fix_problem(ctx, PR_1_RELOC_MEMORY_ALLOCATE, &pctx);
4137                 ext2fs_unmark_valid(fs);
4138                 ctx->flags |= E2F_FLAG_ABORT;
4139                 return;
4140         }
4141         ext2fs_mark_super_dirty(fs);
4142         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
4143         pctx.blk2 = *new_block;
4144         fix_problem(ctx, (old_block ? PR_1_RELOC_FROM_TO :
4145                           PR_1_RELOC_TO), &pctx);
4146         pctx.blk2 = 0;
4147         for (i = 0; i < num; i++) {
4148                 pctx.blk = i;
4149                 ext2fs_mark_block_bitmap2(ctx->block_found_map, (*new_block)+i);
4150                 if (old_block) {
4151                         pctx.errcode = io_channel_read_blk64(fs->io,
4152                                    old_block + i, 1, buf);
4153                         if (pctx.errcode)
4154                                 fix_problem(ctx, PR_1_RELOC_READ_ERR, &pctx);
4155                         pctx.blk = (*new_block) + i;
4156                         pctx.errcode = io_channel_write_blk64(fs->io, pctx.blk,
4157                                                               1, buf);
4158                 } else {
4159                         pctx.blk = (*new_block) + i;
4160                         pctx.errcode = ext2fs_zero_blocks2(fs, pctx.blk, 1,
4161                                                            NULL, NULL);
4162                 }
4163
4164                 if (pctx.errcode)
4165                         fix_problem(ctx, PR_1_RELOC_WRITE_ERR, &pctx);
4166         }
4167         ext2fs_free_mem(&buf);
4168 }
4169
4170 /*
4171  * This routine gets called at the end of pass 1 if bad blocks are
4172  * detected in the superblock, group descriptors, inode_bitmaps, or
4173  * block bitmaps.  At this point, all of the blocks have been mapped
4174  * out, so we can try to allocate new block(s) to replace the bad
4175  * blocks.
4176  */
4177 static void handle_fs_bad_blocks(e2fsck_t ctx)
4178 {
4179         ext2_filsys fs = ctx->fs;
4180         dgrp_t          i;
4181         blk64_t         first_block;
4182         blk64_t         new_blk;
4183
4184         for (i = 0; i < fs->group_desc_count; i++) {
4185                 first_block = ext2fs_group_first_block2(fs, i);
4186
4187                 if (ctx->invalid_block_bitmap_flag[i]) {
4188                         new_blk = ext2fs_block_bitmap_loc(fs, i);
4189                         new_table_block(ctx, first_block, i, _("block bitmap"),
4190                                         1, &new_blk);
4191                         ext2fs_block_bitmap_loc_set(fs, i, new_blk);
4192                 }
4193                 if (ctx->invalid_inode_bitmap_flag[i]) {
4194                         new_blk = ext2fs_inode_bitmap_loc(fs, i);
4195                         new_table_block(ctx, first_block, i, _("inode bitmap"),
4196                                         1, &new_blk);
4197                         ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
4198                 }
4199                 if (ctx->invalid_inode_table_flag[i]) {
4200                         new_blk = ext2fs_inode_table_loc(fs, i);
4201                         new_table_block(ctx, first_block, i, _("inode table"),
4202                                         fs->inode_blocks_per_group,
4203                                         &new_blk);
4204                         ext2fs_inode_table_loc_set(fs, i, new_blk);
4205                         ctx->flags |= E2F_FLAG_RESTART;
4206                 }
4207         }
4208         ctx->invalid_bitmaps = 0;
4209 }
4210
4211 /*
4212  * This routine marks all blocks which are used by the superblock,
4213  * group descriptors, inode bitmaps, and block bitmaps.
4214  */
4215 static void mark_table_blocks(e2fsck_t ctx)
4216 {
4217         ext2_filsys fs = ctx->fs;
4218         blk64_t b;
4219         dgrp_t  i;
4220         unsigned int    j;
4221         struct problem_context pctx;
4222
4223         clear_problem_context(&pctx);
4224
4225         for (i = 0; i < fs->group_desc_count; i++) {
4226                 pctx.group = i;
4227
4228                 ext2fs_reserve_super_and_bgd(fs, i, ctx->block_found_map);
4229                 ext2fs_reserve_super_and_bgd(fs, i, ctx->block_metadata_map);
4230
4231                 /*
4232                  * Mark the blocks used for the inode table
4233                  */
4234                 if (ext2fs_inode_table_loc(fs, i)) {
4235                         for (j = 0, b = ext2fs_inode_table_loc(fs, i);
4236                              j < fs->inode_blocks_per_group;
4237                              j++, b++) {
4238                                 if (ext2fs_test_block_bitmap2(ctx->block_found_map,
4239                                                              b)) {
4240                                         pctx.blk = b;
4241                                         if (!ctx->invalid_inode_table_flag[i] &&
4242                                             fix_problem(ctx,
4243                                                 PR_1_ITABLE_CONFLICT, &pctx)) {
4244                                                 ctx->invalid_inode_table_flag[i]++;
4245                                                 ctx->invalid_bitmaps++;
4246                                         }
4247                                 } else {
4248                                     ext2fs_mark_block_bitmap2(
4249                                                 ctx->block_found_map, b);
4250                                     ext2fs_mark_block_bitmap2(
4251                                                 ctx->block_metadata_map, b);
4252                                 }
4253                         }
4254                 }
4255
4256                 /*
4257                  * Mark block used for the block bitmap
4258                  */
4259                 if (ext2fs_block_bitmap_loc(fs, i)) {
4260                         if (ext2fs_test_block_bitmap2(ctx->block_found_map,
4261                                      ext2fs_block_bitmap_loc(fs, i))) {
4262                                 pctx.blk = ext2fs_block_bitmap_loc(fs, i);
4263                                 if (fix_problem(ctx, PR_1_BB_CONFLICT, &pctx)) {
4264                                         ctx->invalid_block_bitmap_flag[i]++;
4265                                         ctx->invalid_bitmaps++;
4266                                 }
4267                         } else {
4268                             ext2fs_mark_block_bitmap2(ctx->block_found_map,
4269                                      ext2fs_block_bitmap_loc(fs, i));
4270                             ext2fs_mark_block_bitmap2(ctx->block_metadata_map,
4271                                      ext2fs_block_bitmap_loc(fs, i));
4272                         }
4273                 }
4274                 /*
4275                  * Mark block used for the inode bitmap
4276                  */
4277                 if (ext2fs_inode_bitmap_loc(fs, i)) {
4278                         if (ext2fs_test_block_bitmap2(ctx->block_found_map,
4279                                      ext2fs_inode_bitmap_loc(fs, i))) {
4280                                 pctx.blk = ext2fs_inode_bitmap_loc(fs, i);
4281                                 if (fix_problem(ctx, PR_1_IB_CONFLICT, &pctx)) {
4282                                         ctx->invalid_inode_bitmap_flag[i]++;
4283                                         ctx->invalid_bitmaps++;
4284                                 }
4285                         } else {
4286                             ext2fs_mark_block_bitmap2(ctx->block_metadata_map,
4287                                      ext2fs_inode_bitmap_loc(fs, i));
4288                             ext2fs_mark_block_bitmap2(ctx->block_found_map,
4289                                      ext2fs_inode_bitmap_loc(fs, i));
4290                         }
4291                 }
4292         }
4293 }
4294
4295 /*
4296  * These subroutines short circuits ext2fs_get_blocks and
4297  * ext2fs_check_directory; we use them since we already have the inode
4298  * structure, so there's no point in letting the ext2fs library read
4299  * the inode again.
4300  */
4301 static errcode_t pass1_get_blocks(ext2_filsys fs, ext2_ino_t ino,
4302                                   blk_t *blocks)
4303 {
4304         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4305         int     i;
4306
4307         if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
4308                 return EXT2_ET_CALLBACK_NOTHANDLED;
4309
4310         for (i=0; i < EXT2_N_BLOCKS; i++)
4311                 blocks[i] = ctx->stashed_inode->i_block[i];
4312         return 0;
4313 }
4314
4315 static errcode_t pass1_read_inode(ext2_filsys fs, ext2_ino_t ino,
4316                                   struct ext2_inode *inode)
4317 {
4318         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4319
4320         if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
4321                 return EXT2_ET_CALLBACK_NOTHANDLED;
4322         *inode = *ctx->stashed_inode;
4323         return 0;
4324 }
4325
4326 static errcode_t pass1_write_inode(ext2_filsys fs, ext2_ino_t ino,
4327                             struct ext2_inode *inode)
4328 {
4329         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4330
4331         if ((ino == ctx->stashed_ino) && ctx->stashed_inode &&
4332                 (inode != ctx->stashed_inode))
4333                 *ctx->stashed_inode = *inode;
4334         return EXT2_ET_CALLBACK_NOTHANDLED;
4335 }
4336
4337 static errcode_t pass1_check_directory(ext2_filsys fs, ext2_ino_t ino)
4338 {
4339         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4340
4341         if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
4342                 return EXT2_ET_CALLBACK_NOTHANDLED;
4343
4344         if (!LINUX_S_ISDIR(ctx->stashed_inode->i_mode))
4345                 return EXT2_ET_NO_DIRECTORY;
4346         return 0;
4347 }
4348
4349 static errcode_t e2fsck_get_alloc_block(ext2_filsys fs, blk64_t goal,
4350                                         blk64_t *ret)
4351 {
4352         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4353         errcode_t       retval;
4354         blk64_t         new_block;
4355
4356         if (ctx->block_found_map) {
4357                 retval = ext2fs_new_block2(fs, goal, ctx->block_found_map,
4358                                            &new_block);
4359                 if (retval)
4360                         return retval;
4361                 if (fs->block_map) {
4362                         ext2fs_mark_block_bitmap2(fs->block_map, new_block);
4363                         ext2fs_mark_bb_dirty(fs);
4364                 }
4365         } else {
4366                 if (!fs->block_map) {
4367                         retval = ext2fs_read_block_bitmap(fs);
4368                         if (retval)
4369                                 return retval;
4370                 }
4371
4372                 retval = ext2fs_new_block2(fs, goal, fs->block_map, &new_block);
4373                 if (retval)
4374                         return retval;
4375         }
4376
4377         *ret = new_block;
4378         return (0);
4379 }
4380
4381 static errcode_t e2fsck_new_range(ext2_filsys fs, int flags, blk64_t goal,
4382                                   blk64_t len, blk64_t *pblk, blk64_t *plen)
4383 {
4384         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4385         errcode_t       retval;
4386
4387         if (ctx->block_found_map)
4388                 return ext2fs_new_range(fs, flags, goal, len,
4389                                         ctx->block_found_map, pblk, plen);
4390
4391         if (!fs->block_map) {
4392                 retval = ext2fs_read_block_bitmap(fs);
4393                 if (retval)
4394                         return retval;
4395         }
4396
4397         return ext2fs_new_range(fs, flags, goal, len, fs->block_map,
4398                                 pblk, plen);
4399 }
4400
4401 static void e2fsck_block_alloc_stats(ext2_filsys fs, blk64_t blk, int inuse)
4402 {
4403         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4404
4405         /* Never free a critical metadata block */
4406         if (ctx->block_found_map &&
4407             ctx->block_metadata_map &&
4408             inuse < 0 &&
4409             ext2fs_test_block_bitmap2(ctx->block_metadata_map, blk))
4410                 return;
4411
4412         if (ctx->block_found_map) {
4413                 if (inuse > 0)
4414                         ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
4415                 else
4416                         ext2fs_unmark_block_bitmap2(ctx->block_found_map, blk);
4417         }
4418 }
4419
4420 static void e2fsck_block_alloc_stats_range(ext2_filsys fs, blk64_t blk,
4421                                            blk_t num, int inuse)
4422 {
4423         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4424
4425         /* Never free a critical metadata block */
4426         if (ctx->block_found_map &&
4427             ctx->block_metadata_map &&
4428             inuse < 0 &&
4429             ext2fs_test_block_bitmap_range2(ctx->block_metadata_map, blk, num))
4430                 return;
4431
4432         if (ctx->block_found_map) {
4433                 if (inuse > 0)
4434                         ext2fs_mark_block_bitmap_range2(ctx->block_found_map,
4435                                                         blk, num);
4436                 else
4437                         ext2fs_unmark_block_bitmap_range2(ctx->block_found_map,
4438                                                         blk, num);
4439         }
4440 }
4441
4442 void e2fsck_use_inode_shortcuts(e2fsck_t ctx, int use_shortcuts)
4443 {
4444         ext2_filsys fs = ctx->fs;
4445
4446         if (use_shortcuts) {
4447                 fs->get_blocks = pass1_get_blocks;
4448                 fs->check_directory = pass1_check_directory;
4449                 fs->read_inode = pass1_read_inode;
4450                 fs->write_inode = pass1_write_inode;
4451                 ctx->stashed_ino = 0;
4452         } else {
4453                 fs->get_blocks = 0;
4454                 fs->check_directory = 0;
4455                 fs->read_inode = 0;
4456                 fs->write_inode = 0;
4457         }
4458 }
4459
4460 void e2fsck_intercept_block_allocations(e2fsck_t ctx)
4461 {
4462         ext2fs_set_alloc_block_callback(ctx->fs, e2fsck_get_alloc_block, 0);
4463         ext2fs_set_block_alloc_stats_callback(ctx->fs,
4464                                                 e2fsck_block_alloc_stats, 0);
4465         ext2fs_set_new_range_callback(ctx->fs, e2fsck_new_range, NULL);
4466         ext2fs_set_block_alloc_stats_range_callback(ctx->fs,
4467                                         e2fsck_block_alloc_stats_range, NULL);
4468 }