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 #include <assert.h>
  51 #ifdef HAVE_PTHREAD
  52 #include <pthread.h>
  53 #endif
  54
  55 #include "e2fsck.h"
  56 #include <ext2fs/ext2_ext_attr.h>
  57 /* todo remove this finally */
  58 #include <ext2fs/ext2fsP.h>
  59 #include <e2p/e2p.h>
  60
  61 #include "problem.h"
  62
  63 #ifdef NO_INLINE_FUNCS
  64 #define _INLINE_
  65 #else
  66 #define _INLINE_ inline
  67 #endif
  68
  69 #undef DEBUG
  70
  71 struct ea_quota {
  72         blk64_t blocks;
  73         __u64 inodes;
  74 };
  75
  76 static int process_block(ext2_filsys fs, blk64_t        *blocknr,
  77                          e2_blkcnt_t blockcnt, blk64_t ref_blk,
  78                          int ref_offset, void *priv_data);
  79 static int process_bad_block(ext2_filsys fs, blk64_t *block_nr,
  80                              e2_blkcnt_t blockcnt, blk64_t ref_blk,
  81                              int ref_offset, void *priv_data);
  82 static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
  83                          char *block_buf,
  84                          const struct ea_quota *ea_ibody_quota);
  85 static void mark_table_blocks(e2fsck_t ctx);
  86 static void alloc_bb_map(e2fsck_t ctx);
  87 static void alloc_imagic_map(e2fsck_t ctx);
  88 static void mark_inode_bad(e2fsck_t ctx, ext2_ino_t ino);
  89 static void add_casefolded_dir(e2fsck_t ctx, ext2_ino_t ino);
  90 static void handle_fs_bad_blocks(e2fsck_t ctx);
  91 static EXT2_QSORT_TYPE process_inode_cmp(const void *a, const void *b);
  92 static errcode_t scan_callback(ext2_filsys fs, ext2_inode_scan scan,
  93                                   dgrp_t group, void * priv_data);
  94 static void adjust_extattr_refcount(e2fsck_t ctx, ext2_refcount_t refcount,
  95                                     char *block_buf, int adjust_sign);
  96 /* static char *describe_illegal_block(ext2_filsys fs, blk64_t block); */
  97
  98 struct process_block_struct {
  99         ext2_ino_t      ino;
 100         unsigned        is_dir:1, is_reg:1, clear:1, suppress:1,
 101                                 fragmented:1, compressed:1, bbcheck:1,
 102                                 inode_modified:1;
 103         blk64_t         num_blocks;
 104         blk64_t         max_blocks;
 105         blk64_t         last_block;
 106         e2_blkcnt_t     last_init_lblock;
 107         e2_blkcnt_t     last_db_block;
 108         int             num_illegal_blocks;
 109         blk64_t         previous_block;
 110         struct ext2_inode *inode;
 111         struct problem_context *pctx;
 112         ext2fs_block_bitmap fs_meta_blocks;
 113         e2fsck_t        ctx;
 114         blk64_t         next_lblock;
 115         struct extent_tree_info eti;
 116 };
 117
 118 struct process_inode_block {
 119         ext2_ino_t ino;
 120         struct ea_quota ea_ibody_quota;
 121         struct ext2_inode_large inode;
 122 };
 123
 124 struct scan_callback_struct {
 125         e2fsck_t                         ctx;
 126         char                            *block_buf;
 127         struct process_inode_block      *inodes_to_process;
 128         int                             *process_inode_count;
 129 };
 130
 131 static void process_inodes(e2fsck_t ctx, char *block_buf,
 132                            struct process_inode_block *inodes_to_process,
 133                            int *process_inode_count);
 134
 135 static __u64 ext2_max_sizes[EXT2_MAX_BLOCK_LOG_SIZE -
 136                             EXT2_MIN_BLOCK_LOG_SIZE + 1];
 137
 138 /*
 139  * Check to make sure a device inode is real.  Returns 1 if the device
 140  * checks out, 0 if not.
 141  *
 142  * Note: this routine is now also used to check FIFO's and Sockets,
 143  * since they have the same requirement; the i_block fields should be
 144  * zero.
 145  */
 146 int e2fsck_pass1_check_device_inode(ext2_filsys fs EXT2FS_ATTR((unused)),
 147                                     struct ext2_inode *inode)
 148 {
 149         int     i;
 150
 151         /*
 152          * If the index or extents flag is set, then this is a bogus
 153          * device/fifo/socket
 154          */
 155         if (inode->i_flags & (EXT2_INDEX_FL | EXT4_EXTENTS_FL))
 156                 return 0;
 157
 158         /*
 159          * We should be able to do the test below all the time, but
 160          * because the kernel doesn't forcibly clear the device
 161          * inode's additional i_block fields, there are some rare
 162          * occasions when a legitimate device inode will have non-zero
 163          * additional i_block fields.  So for now, we only complain
 164          * when the immutable flag is set, which should never happen
 165          * for devices.  (And that's when the problem is caused, since
 166          * you can't set or clear immutable flags for devices.)  Once
 167          * the kernel has been fixed we can change this...
 168          */
 169         if (inode->i_flags & (EXT2_IMMUTABLE_FL | EXT2_APPEND_FL)) {
 170                 for (i=4; i < EXT2_N_BLOCKS; i++)
 171                         if (inode->i_block[i])
 172                                 return 0;
 173         }
 174         return 1;
 175 }
 176
 177 /*
 178  * Check to make sure a symlink inode is real.  Returns 1 if the symlink
 179  * checks out, 0 if not.
 180  */
 181 int e2fsck_pass1_check_symlink(ext2_filsys fs, ext2_ino_t ino,
 182                                struct ext2_inode *inode, char *buf)
 183 {
 184         unsigned int buflen;
 185         unsigned int len;
 186
 187         if ((inode->i_size_high || inode->i_size == 0) ||
 188             (inode->i_flags & EXT2_INDEX_FL))
 189                 return 0;
 190
 191         if (inode->i_flags & EXT4_INLINE_DATA_FL) {
 192                 size_t inline_size;
 193
 194                 if (inode->i_flags & EXT4_EXTENTS_FL)
 195                         return 0;
 196                 if (ext2fs_inline_data_size(fs, ino, &inline_size))
 197                         return 0;
 198                 if (inode->i_size != inline_size)
 199                         return 0;
 200
 201                 return 1;
 202         }
 203
 204         if (ext2fs_is_fast_symlink(inode)) {
 205                 if (inode->i_flags & EXT4_EXTENTS_FL)
 206                         return 0;
 207                 buf = (char *)inode->i_block;
 208                 buflen = sizeof(inode->i_block);
 209         } else {
 210                 ext2_extent_handle_t    handle;
 211                 struct ext2_extent_info info;
 212                 struct ext2fs_extent    extent;
 213                 blk64_t blk;
 214                 int i;
 215
 216                 if (inode->i_flags & EXT4_EXTENTS_FL) {
 217                         if (ext2fs_extent_open2(fs, ino, inode, &handle))
 218                                 return 0;
 219                         if (ext2fs_extent_get_info(handle, &info) ||
 220                             (info.num_entries != 1) ||
 221                             (info.max_depth != 0)) {
 222                                 ext2fs_extent_free(handle);
 223                                 return 0;
 224                         }
 225                         if (ext2fs_extent_get(handle, EXT2_EXTENT_ROOT,
 226                                               &extent) ||
 227                             (extent.e_lblk != 0) ||
 228                             (extent.e_len != 1)) {
 229                                 ext2fs_extent_free(handle);
 230                                 return 0;
 231                         }
 232                         blk = extent.e_pblk;
 233                         ext2fs_extent_free(handle);
 234                 } else {
 235                         blk = inode->i_block[0];
 236
 237                         for (i = 1; i < EXT2_N_BLOCKS; i++)
 238                                 if (inode->i_block[i])
 239                                         return 0;
 240                 }
 241
 242                 if (blk < fs->super->s_first_data_block ||
 243                     blk >= ext2fs_blocks_count(fs->super))
 244                         return 0;
 245
 246                 if (io_channel_read_blk64(fs->io, blk, 1, buf))
 247                         return 0;
 248
 249                 buflen = fs->blocksize;
 250         }
 251
 252         if (inode->i_flags & EXT4_ENCRYPT_FL)
 253                 len = ext2fs_le16_to_cpu(*(__u16 *)buf) + 2;
 254         else
 255                 len = strnlen(buf, buflen);
 256
 257         if (len >= buflen)
 258                 return 0;
 259
 260         if (len != inode->i_size)
 261                 return 0;
 262         return 1;
 263 }
 264
 265 /*
 266  * If the extents or inlinedata flags are set on the inode, offer to clear 'em.
 267  */
 268 #define BAD_SPECIAL_FLAGS (EXT4_EXTENTS_FL | EXT4_INLINE_DATA_FL)
 269 static void check_extents_inlinedata(e2fsck_t ctx,
 270                                      struct problem_context *pctx)
 271 {
 272         if (!(pctx->inode->i_flags & BAD_SPECIAL_FLAGS))
 273                 return;
 274
 275         if (!fix_problem(ctx, PR_1_SPECIAL_EXTENTS_IDATA, pctx))
 276                 return;
 277
 278         pctx->inode->i_flags &= ~BAD_SPECIAL_FLAGS;
 279         e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1");
 280 }
 281 #undef BAD_SPECIAL_FLAGS
 282
 283 /*
 284  * If the immutable (or append-only) flag is set on the inode, offer
 285  * to clear it.
 286  */
 287 #define BAD_SPECIAL_FLAGS (EXT2_IMMUTABLE_FL | EXT2_APPEND_FL)
 288 static void check_immutable(e2fsck_t ctx, struct problem_context *pctx)
 289 {
 290         if (!(pctx->inode->i_flags & BAD_SPECIAL_FLAGS))
 291                 return;
 292
 293         if (!fix_problem(ctx, PR_1_SET_IMMUTABLE, pctx))
 294                 return;
 295
 296         pctx->inode->i_flags &= ~BAD_SPECIAL_FLAGS;
 297         e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1");
 298 }
 299
 300 /*
 301  * If device, fifo or socket, check size is zero -- if not offer to
 302  * clear it
 303  */
 304 static void check_size(e2fsck_t ctx, struct problem_context *pctx)
 305 {
 306         struct ext2_inode *inode = pctx->inode;
 307
 308         if (EXT2_I_SIZE(inode) == 0)
 309                 return;
 310
 311         if (!fix_problem(ctx, PR_1_SET_NONZSIZE, pctx))
 312                 return;
 313
 314         ext2fs_inode_size_set(ctx->fs, inode, 0);
 315         e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1");
 316 }
 317
 318 /*
 319  * For a given size, calculate how many blocks would be charged towards quota.
 320  */
 321 static blk64_t size_to_quota_blocks(ext2_filsys fs, size_t size)
 322 {
 323         blk64_t clusters;
 324
 325         clusters = DIV_ROUND_UP(size, fs->blocksize << fs->cluster_ratio_bits);
 326         return EXT2FS_C2B(fs, clusters);
 327 }
 328
 329 /*
 330  * Check validity of EA inode. Return 0 if EA inode is valid, otherwise return
 331  * the problem code.
 332  */
 333 static problem_t check_large_ea_inode(e2fsck_t ctx,
 334                                       struct ext2_ext_attr_entry *entry,
 335                                       struct problem_context *pctx,
 336                                       blk64_t *quota_blocks)
 337 {
 338         struct ext2_inode inode;
 339         __u32 hash, signed_hash;
 340         errcode_t retval;
 341
 342         /* Check if inode is within valid range */
 343         if ((entry->e_value_inum < EXT2_FIRST_INODE(ctx->fs->super)) ||
 344             (entry->e_value_inum > ctx->fs->super->s_inodes_count)) {
 345                 pctx->num = entry->e_value_inum;
 346                 return PR_1_ATTR_VALUE_EA_INODE;
 347         }
 348
 349         e2fsck_read_inode(ctx, entry->e_value_inum, &inode, "pass1");
 350
 351         retval = ext2fs_ext_attr_hash_entry3(ctx->fs, entry, NULL, &hash,
 352                                              &signed_hash);
 353         if (retval) {
 354                 com_err("check_large_ea_inode", retval,
 355                         _("while hashing entry with e_value_inum = %u"),
 356                         entry->e_value_inum);
 357                 fatal_error(ctx, 0);
 358         }
 359
 360         if ((hash == entry->e_hash) || (signed_hash == entry->e_hash)) {
 361                 *quota_blocks = size_to_quota_blocks(ctx->fs,
 362                                                      entry->e_value_size);
 363         } else {
 364                 /* This might be an old Lustre-style ea_inode reference. */
 365                 if (inode.i_mtime == pctx->ino &&
 366                     inode.i_generation == pctx->inode->i_generation) {
 367                         *quota_blocks = 0;
 368                 } else {
 369                         /* If target inode is also missing EA_INODE flag,
 370                          * this is likely to be a bad reference.
 371                          */
 372                         if (!(inode.i_flags & EXT4_EA_INODE_FL)) {
 373                                 pctx->num = entry->e_value_inum;
 374                                 return PR_1_ATTR_VALUE_EA_INODE;
 375                         } else {
 376                                 pctx->num = entry->e_hash;
 377                                 return PR_1_ATTR_HASH;
 378                         }
 379                 }
 380         }
 381
 382         if (!(inode.i_flags & EXT4_EA_INODE_FL)) {
 383                 pctx->num = entry->e_value_inum;
 384                 if (fix_problem(ctx, PR_1_ATTR_SET_EA_INODE_FL, pctx)) {
 385                         inode.i_flags |= EXT4_EA_INODE_FL;
 386                         e2fsck_pass1_fix_lock(ctx);
 387                         ext2fs_write_inode(ctx->fs, entry->e_value_inum,
 388                                            &inode);
 389                         e2fsck_pass1_fix_unlock(ctx);
 390                 } else {
 391                         return PR_1_ATTR_NO_EA_INODE_FL;
 392                 }
 393         }
 394         return 0;
 395 }
 396
 397 static void inc_ea_inode_refs(e2fsck_t ctx, struct problem_context *pctx,
 398                               struct ext2_ext_attr_entry *first, void *end)
 399 {
 400         struct ext2_ext_attr_entry *entry = first;
 401         struct ext2_ext_attr_entry *np = EXT2_EXT_ATTR_NEXT(entry);
 402
 403         while ((void *) entry < end && (void *) np < end &&
 404                !EXT2_EXT_IS_LAST_ENTRY(entry)) {
 405                 if (!entry->e_value_inum)
 406                         goto next;
 407                 if (!ctx->ea_inode_refs) {
 408                         pctx->errcode = ea_refcount_create(0,
 409                                                            &ctx->ea_inode_refs);
 410                         if (pctx->errcode) {
 411                                 pctx->num = 4;
 412                                 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
 413                                 ctx->flags |= E2F_FLAG_ABORT;
 414                                 return;
 415                         }
 416                 }
 417                 ea_refcount_increment(ctx->ea_inode_refs, entry->e_value_inum,
 418                                       0);
 419         next:
 420                 entry = np;
 421                 np = EXT2_EXT_ATTR_NEXT(entry);
 422         }
 423 }
 424
 425 static void check_ea_in_inode(e2fsck_t ctx, struct problem_context *pctx,
 426                               struct ea_quota *ea_ibody_quota)
 427 {
 428         struct ext2_super_block *sb = ctx->fs->super;
 429         struct ext2_inode_large *inode;
 430         struct ext2_ext_attr_entry *entry;
 431         char *start, *header, *end;
 432         unsigned int storage_size, remain;
 433         problem_t problem = 0;
 434         region_t region = 0;
 435
 436         ea_ibody_quota->blocks = 0;
 437         ea_ibody_quota->inodes = 0;
 438
 439         inode = (struct ext2_inode_large *) pctx->inode;
 440         storage_size = EXT2_INODE_SIZE(ctx->fs->super) - EXT2_GOOD_OLD_INODE_SIZE -
 441                 inode->i_extra_isize;
 442         header = ((char *) inode) + EXT2_GOOD_OLD_INODE_SIZE +
 443                  inode->i_extra_isize;
 444         end = header + storage_size;
 445         start = header + sizeof(__u32);
 446         entry = (struct ext2_ext_attr_entry *) start;
 447
 448         /* scan all entry's headers first */
 449
 450         /* take finish entry 0UL into account */
 451         remain = storage_size - sizeof(__u32);
 452
 453         region = region_create(0, storage_size);
 454         if (!region) {
 455                 fix_problem(ctx, PR_1_EA_ALLOC_REGION_ABORT, pctx);
 456                 problem = 0;
 457                 ctx->flags |= E2F_FLAG_ABORT;
 458                 return;
 459         }
 460         if (region_allocate(region, 0, sizeof(__u32))) {
 461                 problem = PR_1_INODE_EA_ALLOC_COLLISION;
 462                 goto fix;
 463         }
 464
 465         while (remain >= sizeof(struct ext2_ext_attr_entry) &&
 466                !EXT2_EXT_IS_LAST_ENTRY(entry)) {
 467                 __u32 hash;
 468
 469                 if (region_allocate(region, (char *)entry - (char *)header,
 470                                     EXT2_EXT_ATTR_LEN(entry->e_name_len))) {
 471                         problem = PR_1_INODE_EA_ALLOC_COLLISION;
 472                         goto fix;
 473                 }
 474
 475                 /* header eats this space */
 476                 remain -= sizeof(struct ext2_ext_attr_entry);
 477
 478                 /* is attribute name valid? */
 479                 if (EXT2_EXT_ATTR_SIZE(entry->e_name_len) > remain) {
 480                         pctx->num = entry->e_name_len;
 481                         problem = PR_1_ATTR_NAME_LEN;
 482                         goto fix;
 483                 }
 484
 485                 /* attribute len eats this space */
 486                 remain -= EXT2_EXT_ATTR_SIZE(entry->e_name_len);
 487
 488                 if (entry->e_value_inum == 0) {
 489                         /* check value size */
 490                         if (entry->e_value_size > remain) {
 491                                 pctx->num = entry->e_value_size;
 492                                 problem = PR_1_ATTR_VALUE_SIZE;
 493                                 goto fix;
 494                         }
 495
 496                         if (entry->e_value_size &&
 497                             region_allocate(region,
 498                                             sizeof(__u32) + entry->e_value_offs,
 499                                             EXT2_EXT_ATTR_SIZE(
 500                                                 entry->e_value_size))) {
 501                                 problem = PR_1_INODE_EA_ALLOC_COLLISION;
 502                                 goto fix;
 503                         }
 504
 505                         hash = ext2fs_ext_attr_hash_entry(entry,
 506                                                 start + entry->e_value_offs);
 507                         if (entry->e_hash != 0 && entry->e_hash != hash)
 508                                 hash = ext2fs_ext_attr_hash_entry_signed(entry,
 509                                                 start + entry->e_value_offs);
 510
 511                         /* e_hash may be 0 in older inode's ea */
 512                         if (entry->e_hash != 0 && entry->e_hash != hash) {
 513                                 pctx->num = entry->e_hash;
 514                                 problem = PR_1_ATTR_HASH;
 515                                 goto fix;
 516                         }
 517                 } else {
 518                         blk64_t quota_blocks;
 519
 520                         problem = check_large_ea_inode(ctx, entry, pctx,
 521                                                        &quota_blocks);
 522                         if (problem != 0)
 523                                 goto fix;
 524
 525                         ea_ibody_quota->blocks += quota_blocks;
 526                         ea_ibody_quota->inodes++;
 527                 }
 528
 529                 /* If EA value is stored in external inode then it does not
 530                  * consume space here */
 531                 if (entry->e_value_inum == 0)
 532                         remain -= entry->e_value_size;
 533
 534                 entry = EXT2_EXT_ATTR_NEXT(entry);
 535         }
 536
 537         if (region_allocate(region, (char *)entry - (char *)header,
 538                             sizeof(__u32))) {
 539                 problem = PR_1_INODE_EA_ALLOC_COLLISION;
 540                 goto fix;
 541         }
 542 fix:
 543         if (region)
 544                 region_free(region);
 545         /*
 546          * it seems like a corruption. it's very unlikely we could repair
 547          * EA(s) in automatic fashion -bzzz
 548          */
 549         if (problem == 0 || !fix_problem(ctx, problem, pctx)) {
 550                 inc_ea_inode_refs(ctx, pctx,
 551                                   (struct ext2_ext_attr_entry *)start, end);
 552                 return;
 553         }
 554
 555         /* simply remove all possible EA(s) */
 556         *((__u32 *)header) = 0UL;
 557         e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
 558                                 EXT2_INODE_SIZE(sb), "pass1");
 559         ea_ibody_quota->blocks = 0;
 560         ea_ibody_quota->inodes = 0;
 561 }
 562
 563 static int check_inode_extra_negative_epoch(__u32 xtime, __u32 extra) {
 564         return (xtime & (1U << 31)) != 0 &&
 565                 (extra & EXT4_EPOCH_MASK) == EXT4_EPOCH_MASK;
 566 }
 567
 568 #define CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, xtime) \
 569         check_inode_extra_negative_epoch(inode->i_##xtime, \
 570                                          inode->i_##xtime##_extra)
 571
 572 /* When today's date is earlier than 2242, we assume that atimes,
 573  * ctimes, crtimes, and mtimes with years in the range 2310..2378 are
 574  * actually pre-1970 dates mis-encoded.
 575  */
 576 #define EXT4_EXTRA_NEGATIVE_DATE_CUTOFF 2 * (1LL << 32)
 577
 578 static void check_inode_extra_space(e2fsck_t ctx, struct problem_context *pctx,
 579                                     struct ea_quota *ea_ibody_quota)
 580 {
 581         struct ext2_super_block *sb = ctx->fs->super;
 582         struct ext2_inode_large *inode;
 583         __u32 *eamagic;
 584         int min, max;
 585
 586         ea_ibody_quota->blocks = 0;
 587         ea_ibody_quota->inodes = 0;
 588
 589         inode = (struct ext2_inode_large *) pctx->inode;
 590         if (EXT2_INODE_SIZE(sb) == EXT2_GOOD_OLD_INODE_SIZE) {
 591                 /* this isn't large inode. so, nothing to check */
 592                 return;
 593         }
 594
 595 #if 0
 596         printf("inode #%u, i_extra_size %d\n", pctx->ino,
 597                         inode->i_extra_isize);
 598 #endif
 599         /* i_extra_isize must cover i_extra_isize + i_checksum_hi at least */
 600         min = sizeof(inode->i_extra_isize) + sizeof(inode->i_checksum_hi);
 601         max = EXT2_INODE_SIZE(sb) - EXT2_GOOD_OLD_INODE_SIZE;
 602         /*
 603          * For now we will allow i_extra_isize to be 0, but really
 604          * implementations should never allow i_extra_isize to be 0
 605          */
 606         if (inode->i_extra_isize &&
 607             (inode->i_extra_isize < min || inode->i_extra_isize > max ||
 608              inode->i_extra_isize & 3)) {
 609                 if (!fix_problem(ctx, PR_1_EXTRA_ISIZE, pctx))
 610                         return;
 611                 if (inode->i_extra_isize < min || inode->i_extra_isize > max)
 612                         inode->i_extra_isize = sb->s_want_extra_isize;
 613                 else
 614                         inode->i_extra_isize = (inode->i_extra_isize + 3) & ~3;
 615                 e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
 616                                         EXT2_INODE_SIZE(sb), "pass1");
 617         }
 618
 619         /* check if there is no place for an EA header */
 620         if (inode->i_extra_isize >= max - sizeof(__u32))
 621                 return;
 622
 623         eamagic = (__u32 *) (((char *) inode) + EXT2_GOOD_OLD_INODE_SIZE +
 624                         inode->i_extra_isize);
 625         if (*eamagic == EXT2_EXT_ATTR_MAGIC) {
 626                 /* it seems inode has an extended attribute(s) in body */
 627                 check_ea_in_inode(ctx, pctx, ea_ibody_quota);
 628         }
 629
 630         /*
 631          * If the inode's extended atime (ctime, crtime, mtime) is stored in
 632          * the old, invalid format, repair it.
 633          */
 634         if (((sizeof(time_t) <= 4) ||
 635              (((sizeof(time_t) > 4) &&
 636                ctx->now < EXT4_EXTRA_NEGATIVE_DATE_CUTOFF))) &&
 637             (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, atime) ||
 638              CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, ctime) ||
 639              CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, crtime) ||
 640              CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, mtime))) {
 641
 642                 if (!fix_problem(ctx, PR_1_EA_TIME_OUT_OF_RANGE, pctx))
 643                         return;
 644
 645                 if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, atime))
 646                         inode->i_atime_extra &= ~EXT4_EPOCH_MASK;
 647                 if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, ctime))
 648                         inode->i_ctime_extra &= ~EXT4_EPOCH_MASK;
 649                 if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, crtime))
 650                         inode->i_crtime_extra &= ~EXT4_EPOCH_MASK;
 651                 if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, mtime))
 652                         inode->i_mtime_extra &= ~EXT4_EPOCH_MASK;
 653                 e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
 654                                         EXT2_INODE_SIZE(sb), "pass1");
 655         }
 656
 657 }
 658
 659 static _INLINE_ int is_blocks_used(e2fsck_t ctx, blk64_t block,
 660                                    unsigned int num)
 661 {
 662         int retval;
 663
 664         /* used to avoid duplicate output from below */
 665         retval = ext2fs_test_block_bitmap_range2_valid(ctx->block_found_map,
 666                                                        block, num);
 667         if (!retval)
 668                 return 0;
 669
 670         retval = ext2fs_test_block_bitmap_range2(ctx->block_found_map, block, num);
 671         if (retval) {
 672                 e2fsck_pass1_block_map_r_lock(ctx);
 673                 if (ctx->global_ctx)
 674                         retval = ext2fs_test_block_bitmap_range2(
 675                                         ctx->global_ctx->block_found_map, block, num);
 676                 e2fsck_pass1_block_map_r_unlock(ctx);
 677                 if (retval)
 678                         return 0;
 679         }
 680
 681         return 1;
 682 }
 683
 684 /*
 685  * Check to see if the inode might really be a directory, despite i_mode
 686  *
 687  * This is a lot of complexity for something for which I'm not really
 688  * convinced happens frequently in the wild.  If for any reason this
 689  * causes any problems, take this code out.
 690  * [tytso:20070331.0827EDT]
 691  */
 692 static void check_is_really_dir(e2fsck_t ctx, struct problem_context *pctx,
 693                                 char *buf)
 694 {
 695         struct ext2_inode *inode = pctx->inode;
 696         struct ext2_dir_entry   *dirent;
 697         errcode_t               retval;
 698         blk64_t                 blk;
 699         unsigned int            i, rec_len, not_device = 0;
 700         int                     extent_fs;
 701         int                     inlinedata_fs;
 702
 703         /*
 704          * If the mode looks OK, we believe it.  If the first block in
 705          * the i_block array is 0, this cannot be a directory. If the
 706          * inode is extent-mapped, it is still the case that the latter
 707          * cannot be 0 - the magic number in the extent header would make
 708          * it nonzero.
 709          */
 710         if (LINUX_S_ISDIR(inode->i_mode) || LINUX_S_ISREG(inode->i_mode) ||
 711             LINUX_S_ISLNK(inode->i_mode) || inode->i_block[0] == 0)
 712                 return;
 713
 714         /*
 715          * Check the block numbers in the i_block array for validity:
 716          * zero blocks are skipped (but the first one cannot be zero -
 717          * see above), other blocks are checked against the first and
 718          * max data blocks (from the the superblock) and against the
 719          * block bitmap. Any invalid block found means this cannot be
 720          * a directory.
 721          *
 722          * If there are non-zero blocks past the fourth entry, then
 723          * this cannot be a device file: we remember that for the next
 724          * check.
 725          *
 726          * For extent mapped files, we don't do any sanity checking:
 727          * just try to get the phys block of logical block 0 and run
 728          * with it.
 729          *
 730          * For inline data files, we just try to get the size of inline
 731          * data.  If it's true, we will treat it as a directory.
 732          */
 733
 734         extent_fs = ext2fs_has_feature_extents(ctx->fs->super);
 735         inlinedata_fs = ext2fs_has_feature_inline_data(ctx->fs->super);
 736         if (inlinedata_fs && (inode->i_flags & EXT4_INLINE_DATA_FL)) {
 737                 size_t size;
 738                 __u32 dotdot;
 739                 unsigned int rec_len2;
 740                 struct ext2_dir_entry de;
 741
 742                 if (ext2fs_inline_data_size(ctx->fs, pctx->ino, &size))
 743                         return;
 744                 /*
 745                  * If the size isn't a multiple of 4, it's probably not a
 746                  * directory??
 747                  */
 748                 if (size & 3)
 749                         return;
 750                 /*
 751                  * If the first 10 bytes don't look like a directory entry,
 752                  * it's probably not a directory.
 753                  */
 754                 memcpy(&dotdot, inode->i_block, sizeof(dotdot));
 755                 memcpy(&de, ((char *)inode->i_block) + EXT4_INLINE_DATA_DOTDOT_SIZE,
 756                        EXT2_DIR_REC_LEN(0));
 757                 dotdot = ext2fs_le32_to_cpu(dotdot);
 758                 de.inode = ext2fs_le32_to_cpu(de.inode);
 759                 de.rec_len = ext2fs_le16_to_cpu(de.rec_len);
 760                 ext2fs_get_rec_len(ctx->fs, &de, &rec_len2);
 761                 if (dotdot >= ctx->fs->super->s_inodes_count ||
 762                     (dotdot < EXT2_FIRST_INO(ctx->fs->super) &&
 763                      dotdot != EXT2_ROOT_INO) ||
 764                     de.inode >= ctx->fs->super->s_inodes_count ||
 765                     (de.inode < EXT2_FIRST_INO(ctx->fs->super) &&
 766                      de.inode != 0) ||
 767                     rec_len2 > EXT4_MIN_INLINE_DATA_SIZE -
 768                               EXT4_INLINE_DATA_DOTDOT_SIZE)
 769                         return;
 770                 /* device files never have a "system.data" entry */
 771                 goto isdir;
 772         } else if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) {
 773                 /* extent mapped */
 774                 if  (ext2fs_bmap2(ctx->fs, pctx->ino, inode, 0, 0, 0, 0,
 775                                  &blk))
 776                         return;
 777                 /* device files are never extent mapped */
 778                 not_device++;
 779         } else {
 780                 for (i=0; i < EXT2_N_BLOCKS; i++) {
 781                         blk = inode->i_block[i];
 782                         if (!blk)
 783                                 continue;
 784                         if (i >= 4)
 785                                 not_device++;
 786
 787                         if (blk < ctx->fs->super->s_first_data_block ||
 788                             blk >= ext2fs_blocks_count(ctx->fs->super) ||
 789                             is_blocks_used(ctx, blk, 1))
 790                                 return; /* Invalid block, can't be dir */
 791                 }
 792                 blk = inode->i_block[0];
 793         }
 794
 795         /*
 796          * If the mode says this is a device file and the i_links_count field
 797          * is sane and we have not ruled it out as a device file previously,
 798          * we declare it a device file, not a directory.
 799          */
 800         if ((LINUX_S_ISCHR(inode->i_mode) || LINUX_S_ISBLK(inode->i_mode)) &&
 801             (inode->i_links_count == 1) && !not_device)
 802                 return;
 803
 804         /* read the first block */
 805         ehandler_operation(_("reading directory block"));
 806         retval = ext2fs_read_dir_block4(ctx->fs, blk, buf, 0, pctx->ino);
 807         ehandler_operation(0);
 808         if (retval)
 809                 return;
 810
 811         dirent = (struct ext2_dir_entry *) buf;
 812         retval = ext2fs_get_rec_len(ctx->fs, dirent, &rec_len);
 813         if (retval)
 814                 return;
 815         if ((ext2fs_dirent_name_len(dirent) != 1) ||
 816             (dirent->name[0] != '.') ||
 817             (dirent->inode != pctx->ino) ||
 818             (rec_len < 12) ||
 819             (rec_len % 4) ||
 820             (rec_len >= ctx->fs->blocksize - 12))
 821                 return;
 822
 823         dirent = (struct ext2_dir_entry *) (buf + rec_len);
 824         retval = ext2fs_get_rec_len(ctx->fs, dirent, &rec_len);
 825         if (retval)
 826                 return;
 827         if ((ext2fs_dirent_name_len(dirent) != 2) ||
 828             (dirent->name[0] != '.') ||
 829             (dirent->name[1] != '.') ||
 830             (rec_len < 12) ||
 831             (rec_len % 4))
 832                 return;
 833
 834 isdir:
 835         if (fix_problem(ctx, PR_1_TREAT_AS_DIRECTORY, pctx)) {
 836                 inode->i_mode = (inode->i_mode & 07777) | LINUX_S_IFDIR;
 837                 e2fsck_write_inode_full(ctx, pctx->ino, inode,
 838                                         EXT2_INODE_SIZE(ctx->fs->super),
 839                                         "check_is_really_dir");
 840         }
 841 }
 842
 843 extern errcode_t e2fsck_setup_icount(e2fsck_t ctx, const char *icount_name,
 844                                      int flags, ext2_icount_t hint,
 845                                      ext2_icount_t *ret)
 846 {
 847         unsigned int            threshold;
 848         unsigned int            save_type;
 849         ext2_ino_t              num_dirs;
 850         errcode_t               retval;
 851         char                    *tdb_dir;
 852         int                     enable;
 853
 854         *ret = 0;
 855
 856         profile_get_string(ctx->profile, "scratch_files", "directory", 0, 0,
 857                            &tdb_dir);
 858         profile_get_uint(ctx->profile, "scratch_files",
 859                          "numdirs_threshold", 0, 0, &threshold);
 860         profile_get_boolean(ctx->profile, "scratch_files",
 861                             "icount", 0, 1, &enable);
 862
 863         retval = ext2fs_get_num_dirs(ctx->fs, &num_dirs);
 864         if (retval)
 865                 num_dirs = 1024;        /* Guess */
 866
 867         if (enable && tdb_dir && !access(tdb_dir, W_OK) &&
 868             (!threshold || num_dirs > threshold)) {
 869                 retval = ext2fs_create_icount_tdb(ctx->fs, tdb_dir,
 870                                                   flags, ret);
 871                 if (retval == 0)
 872                         return 0;
 873         }
 874         e2fsck_set_bitmap_type(ctx->fs, EXT2FS_BMAP64_RBTREE, icount_name,
 875                                &save_type);
 876         if (ctx->options & E2F_OPT_ICOUNT_FULLMAP)
 877                 flags |= EXT2_ICOUNT_OPT_FULLMAP;
 878         retval = ext2fs_create_icount2(ctx->fs, flags, 0, hint, ret);
 879         ctx->fs->default_bitmap_type = save_type;
 880         return retval;
 881 }
 882
 883 static errcode_t recheck_bad_inode_checksum(ext2_filsys fs, ext2_ino_t ino,
 884                                             e2fsck_t ctx,
 885                                             struct problem_context *pctx)
 886 {
 887         errcode_t retval;
 888         struct ext2_inode_large inode;
 889
 890         /*
 891          * Reread inode.  If we don't see checksum error, then this inode
 892          * has been fixed elsewhere.
 893          */
 894         ctx->stashed_ino = 0;
 895         retval = ext2fs_read_inode_full(fs, ino, (struct ext2_inode *)&inode,
 896                                         sizeof(inode));
 897         if (retval && retval != EXT2_ET_INODE_CSUM_INVALID)
 898                 return retval;
 899         if (!retval)
 900                 return 0;
 901
 902         /*
 903          * Checksum still doesn't match.  That implies that the inode passes
 904          * all the sanity checks, so maybe the checksum is simply corrupt.
 905          * See if the user will go for fixing that.
 906          */
 907         if (!fix_problem(ctx, PR_1_INODE_ONLY_CSUM_INVALID, pctx))
 908                 return 0;
 909
 910
 911         e2fsck_pass1_fix_lock(ctx);
 912         retval = ext2fs_write_inode_full(fs, ino, (struct ext2_inode *)&inode,
 913                                          sizeof(inode));
 914         e2fsck_pass1_fix_unlock(ctx);
 915         return retval;
 916 }
 917
 918 static void reserve_block_for_root_repair(e2fsck_t ctx)
 919 {
 920         blk64_t         blk = 0;
 921         errcode_t       err;
 922         ext2_filsys     fs = ctx->fs;
 923
 924         ctx->root_repair_block = 0;
 925         if (ext2fs_test_inode_bitmap2(ctx->inode_used_map, EXT2_ROOT_INO))
 926                 return;
 927
 928         err = ext2fs_new_block2(fs, 0, ctx->block_found_map, &blk);
 929         if (err)
 930                 return;
 931         ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
 932         ctx->root_repair_block = blk;
 933 }
 934
 935 static void reserve_block_for_lnf_repair(e2fsck_t ctx)
 936 {
 937         blk64_t         blk = 0;
 938         errcode_t       err;
 939         ext2_filsys     fs = ctx->fs;
 940         static const char name[] = "lost+found";
 941         ext2_ino_t      ino;
 942
 943         ctx->lnf_repair_block = 0;
 944         if (!ext2fs_lookup(fs, EXT2_ROOT_INO, name, sizeof(name)-1, 0, &ino))
 945                 return;
 946
 947         err = ext2fs_new_block2(fs, 0, ctx->block_found_map, &blk);
 948         if (err)
 949                 return;
 950         ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
 951         ctx->lnf_repair_block = blk;
 952         return;
 953 }
 954
 955 static errcode_t get_inline_data_ea_size(ext2_filsys fs, ext2_ino_t ino,
 956                                          struct ext2_inode *inode,
 957                                          size_t *sz)
 958 {
 959         void *p;
 960         struct ext2_xattr_handle *handle;
 961         errcode_t retval;
 962
 963         retval = ext2fs_xattrs_open(fs, ino, &handle);
 964         if (retval)
 965                 return retval;
 966
 967         retval = ext2fs_xattrs_read_inode(handle,
 968                                           (struct ext2_inode_large *)inode);
 969         if (retval)
 970                 goto err;
 971
 972         retval = ext2fs_xattr_get(handle, "system.data", &p, sz);
 973         if (retval)
 974                 goto err;
 975         ext2fs_free_mem(&p);
 976 err:
 977         (void) ext2fs_xattrs_close(&handle);
 978         return retval;
 979 }
 980
 981 static void finish_processing_inode(e2fsck_t ctx, ext2_ino_t ino,
 982                                     struct problem_context *pctx,
 983                                     int failed_csum)
 984 {
 985         if (!failed_csum)
 986                 return;
 987
 988         /*
 989          * If the inode failed the checksum and the user didn't
 990          * clear the inode, test the checksum again -- if it still
 991          * fails, ask the user if the checksum should be corrected.
 992          */
 993         pctx->errcode = recheck_bad_inode_checksum(ctx->fs, ino, ctx, pctx);
 994         if (pctx->errcode)
 995                 ctx->flags |= E2F_FLAG_ABORT;
 996 }
 997 #define FINISH_INODE_LOOP(ctx, ino, pctx, failed_csum) \
 998         do { \
 999                 finish_processing_inode((ctx), (ino), (pctx), (failed_csum)); \
1000                 if ((ctx)->flags & E2F_FLAG_ABORT) \
1001                         return; \
1002         } while (0)
1003
1004 static int could_be_block_map(ext2_filsys fs, struct ext2_inode *inode)
1005 {
1006         __u32 x;
1007         int i;
1008
1009         for (i = 0; i < EXT2_N_BLOCKS; i++) {
1010                 x = inode->i_block[i];
1011 #ifdef WORDS_BIGENDIAN
1012                 x = ext2fs_swab32(x);
1013 #endif
1014                 if (x >= ext2fs_blocks_count(fs->super))
1015                         return 0;
1016         }
1017
1018         return 1;
1019 }
1020
1021 /*
1022  * Figure out what to do with an inode that has both extents and inline data
1023  * inode flags set.  Returns -1 if we decide to erase the inode, 0 otherwise.
1024  */
1025 static int fix_inline_data_extents_file(e2fsck_t ctx,
1026                                         ext2_ino_t ino,
1027                                         struct ext2_inode *inode,
1028                                         int inode_size,
1029                                         struct problem_context *pctx)
1030 {
1031         size_t max_inline_ea_size;
1032         ext2_filsys fs = ctx->fs;
1033         int dirty = 0;
1034
1035         /* Both feature flags not set?  Just run the regular checks */
1036         if (!ext2fs_has_feature_extents(fs->super) &&
1037             !ext2fs_has_feature_inline_data(fs->super))
1038                 return 0;
1039
1040         /* Clear both flags if it's a special file */
1041         if (LINUX_S_ISCHR(inode->i_mode) ||
1042             LINUX_S_ISBLK(inode->i_mode) ||
1043             LINUX_S_ISFIFO(inode->i_mode) ||
1044             LINUX_S_ISSOCK(inode->i_mode)) {
1045                 check_extents_inlinedata(ctx, pctx);
1046                 return 0;
1047         }
1048
1049         /* If it looks like an extent tree, try to clear inlinedata */
1050         if (ext2fs_extent_header_verify(inode->i_block,
1051                                  sizeof(inode->i_block)) == 0 &&
1052             fix_problem(ctx, PR_1_CLEAR_INLINE_DATA_FOR_EXTENT, pctx)) {
1053                 inode->i_flags &= ~EXT4_INLINE_DATA_FL;
1054                 dirty = 1;
1055                 goto out;
1056         }
1057
1058         /* If it looks short enough to be inline data, try to clear extents */
1059         if (inode_size > EXT2_GOOD_OLD_INODE_SIZE)
1060                 max_inline_ea_size = inode_size -
1061                                      (EXT2_GOOD_OLD_INODE_SIZE +
1062                                       ((struct ext2_inode_large *)inode)->i_extra_isize);
1063         else
1064                 max_inline_ea_size = 0;
1065         if (EXT2_I_SIZE(inode) <
1066             EXT4_MIN_INLINE_DATA_SIZE + max_inline_ea_size &&
1067             fix_problem(ctx, PR_1_CLEAR_EXTENT_FOR_INLINE_DATA, pctx)) {
1068                 inode->i_flags &= ~EXT4_EXTENTS_FL;
1069                 dirty = 1;
1070                 goto out;
1071         }
1072
1073         /*
1074          * Too big for inline data, but no evidence of extent tree -
1075          * maybe it's a block map file?  If the mappings all look valid?
1076          */
1077         if (could_be_block_map(fs, inode) &&
1078             fix_problem(ctx, PR_1_CLEAR_EXTENT_INLINE_DATA_FLAGS, pctx)) {
1079 #ifdef WORDS_BIGENDIAN
1080                 int i;
1081
1082                 for (i = 0; i < EXT2_N_BLOCKS; i++)
1083                         inode->i_block[i] = ext2fs_swab32(inode->i_block[i]);
1084 #endif
1085
1086                 inode->i_flags &= ~(EXT4_EXTENTS_FL | EXT4_INLINE_DATA_FL);
1087                 dirty = 1;
1088                 goto out;
1089         }
1090
1091         /* Oh well, just clear the busted inode. */
1092         if (fix_problem(ctx, PR_1_CLEAR_EXTENT_INLINE_DATA_INODE, pctx)) {
1093                 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1094                 return -1;
1095         }
1096
1097 out:
1098         if (dirty)
1099                 e2fsck_write_inode(ctx, ino, inode, "pass1");
1100
1101         return 0;
1102 }
1103
1104 static void pass1_readahead(e2fsck_t ctx, dgrp_t *group, ext2_ino_t *next_ino)
1105 {
1106         ext2_ino_t inodes_in_group = 0, inodes_per_block, inodes_per_buffer;
1107         dgrp_t start = *group, grp, grp_end = ctx->fs->group_desc_count;
1108         blk64_t blocks_to_read = 0;
1109         errcode_t err = EXT2_ET_INVALID_ARGUMENT;
1110
1111 #ifdef HAVE_PTHREAD
1112         if (ctx->fs->fs_num_threads > 1)
1113                 grp_end = ctx->thread_info.et_group_end;
1114 #endif
1115         if (ctx->readahead_kb == 0)
1116                 goto out;
1117
1118         /* Keep iterating groups until we have enough to readahead */
1119         inodes_per_block = EXT2_INODES_PER_BLOCK(ctx->fs->super);
1120         for (grp = start; grp < grp_end; grp++) {
1121                 if (ext2fs_bg_flags_test(ctx->fs, grp, EXT2_BG_INODE_UNINIT))
1122                         continue;
1123                 inodes_in_group = ctx->fs->super->s_inodes_per_group -
1124                                         ext2fs_bg_itable_unused(ctx->fs, grp);
1125                 blocks_to_read += (inodes_in_group + inodes_per_block - 1) /
1126                                         inodes_per_block;
1127                 if (blocks_to_read * ctx->fs->blocksize >
1128                     ctx->readahead_kb * 1024)
1129                         break;
1130         }
1131
1132         err = e2fsck_readahead(ctx->fs, E2FSCK_READA_ITABLE, start,
1133                                grp - start + 1);
1134         if (err == EAGAIN) {
1135                 ctx->readahead_kb /= 2;
1136                 err = 0;
1137         }
1138
1139 out:
1140         if (err) {
1141                 /* Error; disable itable readahead */
1142                 *group = ctx->fs->group_desc_count;
1143                 *next_ino = ctx->fs->super->s_inodes_count;
1144         } else {
1145                 /*
1146                  * Don't do more readahead until we've reached the first inode
1147                  * of the last inode scan buffer block for the last group.
1148                  */
1149                 *group = grp + 1;
1150                 inodes_per_buffer = (ctx->inode_buffer_blocks ?
1151                                      ctx->inode_buffer_blocks :
1152                                      EXT2_INODE_SCAN_DEFAULT_BUFFER_BLOCKS) *
1153                                     ctx->fs->blocksize /
1154                                     EXT2_INODE_SIZE(ctx->fs->super);
1155                 inodes_in_group--;
1156                 *next_ino = inodes_in_group -
1157                             (inodes_in_group % inodes_per_buffer) + 1 +
1158                             (grp * ctx->fs->super->s_inodes_per_group);
1159         }
1160 }
1161
1162 /*
1163  * Check if the passed ino is one of the used superblock quota inodes.
1164  *
1165  * Before the quota inodes were journaled, older superblock quota inodes
1166  * were just regular files in the filesystem and not reserved inodes.  This
1167  * checks if the passed ino is one of the s_*_quota_inum superblock fields,
1168  * which may not always be the same as the EXT4_*_QUOTA_INO fields.
1169  */
1170 static int quota_inum_is_super(struct ext2_super_block *sb, ext2_ino_t ino)
1171 {
1172         enum quota_type qtype;
1173
1174         for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1175                 if (*quota_sb_inump(sb, qtype) == ino)
1176                         return 1;
1177
1178         return 0;
1179 }
1180
1181 /*
1182  * Check if the passed ino is one of the reserved quota inodes.
1183  * This checks if the inode number is one of the reserved EXT4_*_QUOTA_INO
1184  * inodes.  These inodes may or may not be in use by the quota feature.
1185  */
1186 static int quota_inum_is_reserved(ext2_filsys fs, ext2_ino_t ino)
1187 {
1188         enum quota_type qtype;
1189
1190         for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1191                 if (quota_type2inum(qtype, fs->super) == ino)
1192                         return 1;
1193
1194         return 0;
1195 }
1196
1197 static int e2fsck_should_abort(e2fsck_t ctx)
1198 {
1199         e2fsck_t global_ctx;
1200
1201         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1202                 return 1;
1203
1204         if (ctx->global_ctx) {
1205                 global_ctx = ctx->global_ctx;
1206                 if (global_ctx->flags & E2F_FLAG_SIGNAL_MASK)
1207                         return 1;
1208         }
1209         return 0;
1210 }
1211
1212 static void init_ext2_max_sizes()
1213 {
1214         int     i;
1215         __u64   max_sizes;
1216
1217         /*
1218          * Init ext2_max_sizes which will be immutable and shared between
1219          * threads
1220          */
1221 #define EXT2_BPP(bits) (1ULL << ((bits) - 2))
1222
1223         for (i = EXT2_MIN_BLOCK_LOG_SIZE; i <= EXT2_MAX_BLOCK_LOG_SIZE; i++) {
1224                 max_sizes = EXT2_NDIR_BLOCKS + EXT2_BPP(i);
1225                 max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i);
1226                 max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i) * EXT2_BPP(i);
1227                 max_sizes = (max_sizes * (1UL << i));
1228                 ext2_max_sizes[i - EXT2_MIN_BLOCK_LOG_SIZE] = max_sizes;
1229         }
1230 #undef EXT2_BPP
1231 }
1232
1233 #ifdef HAVE_PTHREAD
1234 /* TODO: tdb needs to be handled properly for multiple threads*/
1235 static int multiple_threads_supported(e2fsck_t ctx)
1236 {
1237 #ifdef  CONFIG_TDB
1238         unsigned int            threshold;
1239         ext2_ino_t              num_dirs;
1240         errcode_t               retval;
1241         char                    *tdb_dir;
1242         int                     enable;
1243
1244         profile_get_string(ctx->profile, "scratch_files", "directory", 0, 0,
1245                            &tdb_dir);
1246         profile_get_uint(ctx->profile, "scratch_files",
1247                          "numdirs_threshold", 0, 0, &threshold);
1248         profile_get_boolean(ctx->profile, "scratch_files",
1249                             "icount", 0, 1, &enable);
1250
1251         retval = ext2fs_get_num_dirs(ctx->fs, &num_dirs);
1252         if (retval)
1253                 num_dirs = 1024;        /* Guess */
1254
1255         /* tdb is unsupported now */
1256         if (enable && tdb_dir && !access(tdb_dir, W_OK) &&
1257             (!threshold || num_dirs > threshold))
1258                 return 0;
1259 #endif
1260         return 1;
1261 }
1262
1263 /**
1264  * Even though we could specify number of threads,
1265  * but it might be more than the whole filesystem
1266  * block groups, correct it here.
1267  */
1268 static void e2fsck_pass1_set_thread_num(e2fsck_t ctx)
1269 {
1270         unsigned flexbg_size = 1;
1271         ext2_filsys fs = ctx->fs;
1272         int num_threads = ctx->fs_num_threads;
1273         int max_threads;
1274
1275         if (num_threads < 1) {
1276                 num_threads = 1;
1277                 goto out;
1278         }
1279
1280         if (!multiple_threads_supported(ctx)) {
1281                 num_threads = 1;
1282                 fprintf(stderr, "Fall through single thread for pass1 "
1283                         "because tdb could not handle properly\n");
1284                 goto out;
1285         }
1286
1287         if (ext2fs_has_feature_flex_bg(fs->super))
1288                 flexbg_size = 1 << fs->super->s_log_groups_per_flex;
1289         max_threads = fs->group_desc_count / flexbg_size;
1290         if (max_threads == 0)
1291                 max_threads = 1;
1292
1293         if (num_threads > max_threads) {
1294                 fprintf(stderr, "Use max possible thread num: %d instead\n",
1295                                 max_threads);
1296                 num_threads = max_threads;
1297         }
1298 out:
1299         ctx->fs_num_threads = num_threads;
1300         ctx->fs->fs_num_threads = num_threads;
1301 }
1302 #endif
1303
1304 /*
1305  * We need call mark_table_blocks() before multiple
1306  * thread start, since all known system blocks should be
1307  * marked and checked later.
1308  */
1309 static errcode_t e2fsck_pass1_prepare(e2fsck_t ctx)
1310 {
1311         struct problem_context pctx;
1312         ext2_filsys fs = ctx->fs;
1313         unsigned long long readahead_kb;
1314
1315         init_ext2_max_sizes();
1316 #ifdef HAVE_PTHREAD
1317         e2fsck_pass1_set_thread_num(ctx);
1318 #endif
1319         /* If we can do readahead, figure out how many groups to pull in. */
1320         if (!e2fsck_can_readahead(ctx->fs))
1321                 ctx->readahead_kb = 0;
1322         else if (ctx->readahead_kb == ~0ULL)
1323                 ctx->readahead_kb = e2fsck_guess_readahead(ctx->fs);
1324
1325 #ifdef HAVE_PTHREAD
1326         /* don't use more than 1/10 of memory for threads checking */
1327         readahead_kb = get_memory_size() / (10 * ctx->fs_num_threads);
1328         /* maybe better disable RA if this is too small? */
1329         if (ctx->readahead_kb > readahead_kb)
1330                 ctx->readahead_kb = readahead_kb;
1331 #endif
1332         clear_problem_context(&pctx);
1333         if (!(ctx->options & E2F_OPT_PREEN))
1334                 fix_problem(ctx, PR_1_PASS_HEADER, &pctx);
1335
1336         pctx.errcode = e2fsck_allocate_subcluster_bitmap(ctx->fs,
1337                         _("in-use block map"), EXT2FS_BMAP64_RBTREE,
1338                         "block_found_map", &ctx->block_found_map);
1339         if (pctx.errcode) {
1340                 pctx.num = 1;
1341                 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
1342                 ctx->flags |= E2F_FLAG_ABORT;
1343                 return pctx.errcode;
1344         }
1345         pctx.errcode = e2fsck_allocate_block_bitmap(ctx->fs,
1346                         _("metadata block map"), EXT2FS_BMAP64_RBTREE,
1347                         "block_metadata_map", &ctx->block_metadata_map);
1348         if (pctx.errcode) {
1349                 pctx.num = 1;
1350                 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
1351                 ctx->flags |= E2F_FLAG_ABORT;
1352                 return pctx.errcode;
1353         }
1354
1355         mark_table_blocks(ctx);
1356         pctx.errcode = ext2fs_convert_subcluster_bitmap(ctx->fs,
1357                                                 &ctx->block_found_map);
1358         if (pctx.errcode) {
1359                 fix_problem(ctx, PR_1_CONVERT_SUBCLUSTER, &pctx);
1360                 ctx->flags |= E2F_FLAG_ABORT;
1361                 return pctx.errcode;
1362         }
1363
1364         pctx.errcode = e2fsck_allocate_block_bitmap(ctx->fs,
1365                         _("multiply claimed block map"),
1366                         EXT2FS_BMAP64_RBTREE, "block_dup_map",
1367                         &ctx->block_dup_map);
1368         if (pctx.errcode) {
1369                 pctx.num = 3;
1370                 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR,
1371                             &pctx);
1372                 /* Should never get here */
1373                 ctx->flags |= E2F_FLAG_ABORT;
1374                 return pctx.errcode;
1375         }
1376
1377         if (ext2fs_has_feature_mmp(fs->super) &&
1378             fs->super->s_mmp_block > fs->super->s_first_data_block &&
1379             fs->super->s_mmp_block < ext2fs_blocks_count(fs->super))
1380                 ext2fs_mark_block_bitmap2(ctx->block_found_map,
1381                                           fs->super->s_mmp_block);
1382 #ifdef  HAVE_PTHREAD
1383         pthread_mutex_init(&ctx->fs_fix_mutex, NULL);
1384         pthread_rwlock_init(&ctx->fs_block_map_rwlock, NULL);
1385 #endif
1386
1387         return 0;
1388 }
1389
1390 static void e2fsck_pass1_post(e2fsck_t ctx)
1391 {
1392         struct problem_context pctx;
1393         ext2_filsys fs = ctx->fs;
1394
1395         char *block_buf =
1396                 (char *)e2fsck_allocate_memory(ctx, ctx->fs->blocksize * 3,
1397                                               "block interate buffer");
1398         reserve_block_for_root_repair(ctx);
1399         reserve_block_for_lnf_repair(ctx);
1400
1401         /*
1402          * If any extended attribute blocks' reference counts need to
1403          * be adjusted, either up (ctx->refcount_extra), or down
1404          * (ctx->refcount), then fix them.
1405          */
1406         if (ctx->refcount) {
1407                 adjust_extattr_refcount(ctx, ctx->refcount, block_buf, -1);
1408                 ea_refcount_free(ctx->refcount);
1409                 ctx->refcount = 0;
1410         }
1411         if (ctx->refcount_extra) {
1412                 adjust_extattr_refcount(ctx, ctx->refcount_extra,
1413                                         block_buf, +1);
1414                 ea_refcount_free(ctx->refcount_extra);
1415                 ctx->refcount_extra = 0;
1416         }
1417
1418         if (ctx->invalid_bitmaps)
1419                 handle_fs_bad_blocks(ctx);
1420
1421         /* We don't need the block_ea_map any more */
1422         if (ctx->block_ea_map) {
1423                 ext2fs_free_block_bitmap(ctx->block_ea_map);
1424                 ctx->block_ea_map = 0;
1425         }
1426
1427         if (ctx->flags & E2F_FLAG_RESIZE_INODE) {
1428                 struct ext2_inode *inode;
1429                 int inode_size = EXT2_INODE_SIZE(fs->super);
1430                 inode = e2fsck_allocate_memory(ctx, inode_size,
1431                                                "scratch inode");
1432
1433                 clear_problem_context(&pctx);
1434                 pctx.errcode = ext2fs_create_resize_inode(fs);
1435                 if (pctx.errcode) {
1436                         if (!fix_problem(ctx, PR_1_RESIZE_INODE_CREATE,
1437                                          &pctx)) {
1438                                 ctx->flags |= E2F_FLAG_ABORT;
1439                                 ext2fs_free_mem(&inode);
1440                                 ext2fs_free_mem(&block_buf);
1441                                 return;
1442                         }
1443                         pctx.errcode = 0;
1444                 }
1445                 if (!pctx.errcode) {
1446                         e2fsck_read_inode(ctx, EXT2_RESIZE_INO, inode,
1447                                           "recreate inode");
1448                         inode->i_mtime = ctx->now;
1449                         e2fsck_write_inode(ctx, EXT2_RESIZE_INO, inode,
1450                                            "recreate inode");
1451                 }
1452                 ctx->flags &= ~E2F_FLAG_RESIZE_INODE;
1453                 ext2fs_free_mem(&inode);
1454         }
1455
1456         if (ctx->flags & E2F_FLAG_RESTART) {
1457                 ext2fs_free_mem(&block_buf);
1458                 return;
1459         }
1460
1461         if (ctx->block_dup_map) {
1462                 if (!(ctx->flags & E2F_FLAG_DUP_BLOCK)) {
1463                         ext2fs_free_mem(&block_buf);
1464                         return;
1465                 }
1466                 if (ctx->options & E2F_OPT_PREEN) {
1467                         clear_problem_context(&pctx);
1468                         fix_problem(ctx, PR_1_DUP_BLOCKS_PREENSTOP, &pctx);
1469                 }
1470                 e2fsck_pass1_dupblocks(ctx, block_buf);
1471                 ext2fs_free_mem(&block_buf);
1472                 ctx->flags &= ~E2F_FLAG_DUP_BLOCK;
1473         }
1474 }
1475
1476
1477 void e2fsck_pass1_run(e2fsck_t ctx)
1478 {
1479         int     i;
1480         ext2_filsys fs = ctx->fs;
1481         ext2_ino_t      ino = 0;
1482         struct ext2_inode *inode = NULL;
1483         ext2_inode_scan scan = NULL;
1484         char            *block_buf = NULL;
1485 #ifdef RESOURCE_TRACK
1486         struct resource_track   rtrack;
1487 #endif
1488         unsigned char   frag, fsize;
1489         struct          problem_context pctx;
1490         struct          scan_callback_struct scan_struct;
1491         struct ext2_super_block *sb = ctx->fs->super;
1492         const char      *old_op;
1493         const char      *eop_next_inode = _("getting next inode from scan");
1494         int             imagic_fs, extent_fs, inlinedata_fs, casefold_fs;
1495         int             low_dtime_check = 1;
1496         unsigned int    inode_size = EXT2_INODE_SIZE(fs->super);
1497         unsigned int    bufsize;
1498         int             failed_csum = 0;
1499         ext2_ino_t      ino_threshold = 0;
1500         dgrp_t          ra_group = 0;
1501         struct ea_quota ea_ibody_quota;
1502         struct process_inode_block *inodes_to_process;
1503         int             process_inode_count;
1504
1505         init_resource_track(&rtrack, ctx->fs->io);
1506         clear_problem_context(&pctx);
1507
1508         pass1_readahead(ctx, &ra_group, &ino_threshold);
1509         if (ext2fs_has_feature_dir_index(fs->super) &&
1510             !(ctx->options & E2F_OPT_NO)) {
1511                 if (ext2fs_u32_list_create(&ctx->dirs_to_hash, 50))
1512                         ctx->dirs_to_hash = 0;
1513         }
1514
1515 #ifdef MTRACE
1516         mtrace_print("Pass 1");
1517 #endif
1518
1519         imagic_fs = ext2fs_has_feature_imagic_inodes(sb);
1520         extent_fs = ext2fs_has_feature_extents(sb);
1521         inlinedata_fs = ext2fs_has_feature_inline_data(sb);
1522         casefold_fs = ext2fs_has_feature_casefold(sb);
1523
1524         /*
1525          * Allocate bitmaps structures
1526          */
1527         pctx.errcode = e2fsck_allocate_inode_bitmap(fs, _("in-use inode map"),
1528                                                     EXT2FS_BMAP64_RBTREE,
1529                                                     "inode_used_map",
1530                                                     &ctx->inode_used_map);
1531         if (pctx.errcode) {
1532                 pctx.num = 1;
1533                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1534                 ctx->flags |= E2F_FLAG_ABORT;
1535                 return;
1536         }
1537         pctx.errcode = e2fsck_allocate_inode_bitmap(fs,
1538                         _("directory inode map"),
1539                         ctx->global_ctx ? EXT2FS_BMAP64_RBTREE :
1540                         EXT2FS_BMAP64_AUTODIR,
1541                         "inode_dir_map", &ctx->inode_dir_map);
1542         if (pctx.errcode) {
1543                 pctx.num = 2;
1544                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1545                 ctx->flags |= E2F_FLAG_ABORT;
1546                 return;
1547         }
1548         pctx.errcode = e2fsck_allocate_inode_bitmap(fs,
1549                         _("regular file inode map"), EXT2FS_BMAP64_RBTREE,
1550                         "inode_reg_map", &ctx->inode_reg_map);
1551         if (pctx.errcode) {
1552                 pctx.num = 6;
1553                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1554                 ctx->flags |= E2F_FLAG_ABORT;
1555                 return;
1556         }
1557         if (casefold_fs) {
1558                 pctx.errcode =
1559                         e2fsck_allocate_inode_bitmap(fs,
1560                                                      _("inode casefold map"),
1561                                                      EXT2FS_BMAP64_RBTREE,
1562                                                      "inode_casefold_map",
1563                                                      &ctx->inode_casefold_map);
1564                 if (pctx.errcode) {
1565                         pctx.num = 1;
1566                         fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1567                         ctx->flags |= E2F_FLAG_ABORT;
1568                         return;
1569                 }
1570         }
1571         pctx.errcode = e2fsck_setup_icount(ctx, "inode_link_info", 0, NULL,
1572                                            &ctx->inode_link_info);
1573         if (pctx.errcode) {
1574                 fix_problem(ctx, PR_1_ALLOCATE_ICOUNT, &pctx);
1575                 ctx->flags |= E2F_FLAG_ABORT;
1576                 return;
1577         }
1578         bufsize = inode_size;
1579         if (bufsize < sizeof(struct ext2_inode_large))
1580                 bufsize = sizeof(struct ext2_inode_large);
1581         inode = (struct ext2_inode *)
1582                 e2fsck_allocate_memory(ctx, bufsize, "scratch inode");
1583
1584         inodes_to_process = (struct process_inode_block *)
1585                 e2fsck_allocate_memory(ctx,
1586                                        (ctx->process_inode_size *
1587                                         sizeof(struct process_inode_block)),
1588                                        "array of inodes to process");
1589         process_inode_count = 0;
1590
1591         pctx.errcode = ext2fs_init_dblist(fs, 0);
1592         if (pctx.errcode) {
1593                 fix_problem(ctx, PR_1_ALLOCATE_DBCOUNT, &pctx);
1594                 ctx->flags |= E2F_FLAG_ABORT;
1595                 goto endit;
1596         }
1597
1598         /*
1599          * If the last orphan field is set, clear it, since the pass1
1600          * processing will automatically find and clear the orphans.
1601          * In the future, we may want to try using the last_orphan
1602          * linked list ourselves, but for now, we clear it so that the
1603          * ext3 mount code won't get confused.
1604          */
1605         if (!(ctx->options & E2F_OPT_READONLY)) {
1606                 if (fs->super->s_last_orphan) {
1607                         fs->super->s_last_orphan = 0;
1608                         ext2fs_mark_super_dirty(fs);
1609                 }
1610         }
1611
1612         block_buf = (char *) e2fsck_allocate_memory(ctx, fs->blocksize * 3,
1613                                                     "block iterate buffer");
1614         if (EXT2_INODE_SIZE(fs->super) == EXT2_GOOD_OLD_INODE_SIZE)
1615                 e2fsck_use_inode_shortcuts(ctx, 1);
1616         e2fsck_intercept_block_allocations(ctx);
1617         old_op = ehandler_operation(_("opening inode scan"));
1618         pctx.errcode = ext2fs_open_inode_scan(fs, ctx->inode_buffer_blocks,
1619                                               &scan);
1620         ehandler_operation(old_op);
1621         if (pctx.errcode) {
1622                 fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx);
1623                 ctx->flags |= E2F_FLAG_ABORT;
1624                 goto endit;
1625         }
1626         ext2fs_inode_scan_flags(scan, EXT2_SF_SKIP_MISSING_ITABLE |
1627                                       EXT2_SF_WARN_GARBAGE_INODES, 0);
1628         ctx->stashed_inode = inode;
1629         scan_struct.ctx = ctx;
1630         scan_struct.block_buf = block_buf;
1631         scan_struct.inodes_to_process = inodes_to_process;
1632         scan_struct.process_inode_count = &process_inode_count;
1633         ext2fs_set_inode_callback(scan, scan_callback, &scan_struct);
1634         if (ctx->progress && ((ctx->progress)(ctx, 1, 0,
1635                                               ctx->fs->group_desc_count)))
1636                 goto endit;
1637         if ((fs->super->s_wtime &&
1638              fs->super->s_wtime < fs->super->s_inodes_count) ||
1639             (fs->super->s_mtime &&
1640              fs->super->s_mtime < fs->super->s_inodes_count) ||
1641             (fs->super->s_mkfs_time &&
1642              fs->super->s_mkfs_time < fs->super->s_inodes_count))
1643                 low_dtime_check = 0;
1644
1645         /* Set up ctx->lost_and_found if possible */
1646         (void) e2fsck_get_lost_and_found(ctx, 0);
1647
1648 #ifdef HAVE_PTHREAD
1649         if (ctx->global_ctx) {
1650                 if (ctx->options & E2F_OPT_DEBUG &&
1651                     ctx->options & E2F_OPT_MULTITHREAD)
1652                         fprintf(stderr, "thread %d jumping to group %d\n",
1653                                         ctx->thread_info.et_thread_index,
1654                                         ctx->thread_info.et_group_start);
1655                 pctx.errcode = ext2fs_inode_scan_goto_blockgroup(scan,
1656                                         ctx->thread_info.et_group_start);
1657                 if (pctx.errcode) {
1658                         fix_problem(ctx, PR_1_PASS_HEADER, &pctx);
1659                         ctx->flags |= E2F_FLAG_ABORT;
1660                         goto endit;
1661                 }
1662         }
1663 #endif
1664
1665         while (1) {
1666                 if (ino % (fs->super->s_inodes_per_group * 4) == 1) {
1667                         if (e2fsck_mmp_update(fs))
1668                                 fatal_error(ctx, 0);
1669                 }
1670                 old_op = ehandler_operation(eop_next_inode);
1671                 pctx.errcode = ext2fs_get_next_inode_full(scan, &ino,
1672                                                           inode, inode_size);
1673                 if (ino > ino_threshold)
1674                         pass1_readahead(ctx, &ra_group, &ino_threshold);
1675                 ehandler_operation(old_op);
1676                 if (e2fsck_should_abort(ctx))
1677                         goto endit;
1678                 if (pctx.errcode == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE) {
1679                         /*
1680                          * If badblocks says badblocks is bad, offer to clear
1681                          * the list, update the in-core bb list, and restart
1682                          * the inode scan.
1683                          */
1684                         if (ino == EXT2_BAD_INO &&
1685                             fix_problem(ctx, PR_1_BADBLOCKS_IN_BADBLOCKS,
1686                                         &pctx)) {
1687                                 errcode_t err;
1688
1689                                 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1690                                 ext2fs_badblocks_list_free(ctx->fs->badblocks);
1691                                 ctx->fs->badblocks = NULL;
1692                                 err = ext2fs_read_bb_inode(ctx->fs,
1693                                                         &ctx->fs->badblocks);
1694                                 if (err) {
1695                                         fix_problem(ctx, PR_1_ISCAN_ERROR,
1696                                                     &pctx);
1697                                         ctx->flags |= E2F_FLAG_ABORT;
1698                                 } else
1699                                         ctx->flags |= E2F_FLAG_RESTART;
1700                                 goto endit;
1701                         }
1702                         if (!ctx->inode_bb_map)
1703                                 alloc_bb_map(ctx);
1704                         ext2fs_mark_inode_bitmap2(ctx->inode_bb_map, ino);
1705                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1706                         continue;
1707                 }
1708                 if (pctx.errcode == EXT2_ET_SCAN_FINISHED)
1709                         break;
1710                 if (pctx.errcode &&
1711                     pctx.errcode != EXT2_ET_INODE_CSUM_INVALID &&
1712                     pctx.errcode != EXT2_ET_INODE_IS_GARBAGE) {
1713                         fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx);
1714                         ctx->flags |= E2F_FLAG_ABORT;
1715                         goto endit;
1716                 }
1717                 if (!ino)
1718                         break;
1719 #ifdef HAVE_PTHREAD
1720                 if (ctx->global_ctx)
1721                         ctx->thread_info.et_inode_number++;
1722 #endif
1723                 pctx.ino = ino;
1724                 pctx.inode = inode;
1725                 ctx->stashed_ino = ino;
1726
1727                 /* Clear trashed inode? */
1728                 if (pctx.errcode == EXT2_ET_INODE_IS_GARBAGE &&
1729                     inode->i_links_count > 0 &&
1730                     fix_problem(ctx, PR_1_INODE_IS_GARBAGE, &pctx)) {
1731                         pctx.errcode = 0;
1732                         e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1733                 }
1734                 failed_csum = pctx.errcode != 0;
1735
1736                 /*
1737                  * Check for inodes who might have been part of the
1738                  * orphaned list linked list.  They should have gotten
1739                  * dealt with by now, unless the list had somehow been
1740                  * corrupted.
1741                  *
1742                  * FIXME: In the future, inodes which are still in use
1743                  * (and which are therefore) pending truncation should
1744                  * be handled specially.  Right now we just clear the
1745                  * dtime field, and the normal e2fsck handling of
1746                  * inodes where i_size and the inode blocks are
1747                  * inconsistent is to fix i_size, instead of releasing
1748                  * the extra blocks.  This won't catch the inodes that
1749                  * was at the end of the orphan list, but it's better
1750                  * than nothing.  The right answer is that there
1751                  * shouldn't be any bugs in the orphan list handling.  :-)
1752                  */
1753                 if (inode->i_dtime && low_dtime_check &&
1754                     inode->i_dtime < ctx->fs->super->s_inodes_count) {
1755                         if (fix_problem(ctx, PR_1_LOW_DTIME, &pctx)) {
1756                                 inode->i_dtime = inode->i_links_count ?
1757                                         0 : ctx->now;
1758                                 e2fsck_write_inode(ctx, ino, inode,
1759                                                    "pass1");
1760                                 failed_csum = 0;
1761                         }
1762                 }
1763
1764                 if (inode->i_links_count) {
1765                         pctx.errcode = ext2fs_icount_store(ctx->inode_link_info,
1766                                            ino, inode->i_links_count);
1767                         if (pctx.errcode) {
1768                                 pctx.num = inode->i_links_count;
1769                                 fix_problem(ctx, PR_1_ICOUNT_STORE, &pctx);
1770                                 ctx->flags |= E2F_FLAG_ABORT;
1771                                 goto endit;
1772                         }
1773                 } else if ((ino >= EXT2_FIRST_INODE(fs->super)) &&
1774                            !quota_inum_is_reserved(fs, ino)) {
1775                         if (!inode->i_dtime && inode->i_mode) {
1776                                 if (fix_problem(ctx,
1777                                             PR_1_ZERO_DTIME, &pctx)) {
1778                                         inode->i_dtime = ctx->now;
1779                                         e2fsck_write_inode(ctx, ino, inode,
1780                                                            "pass1");
1781                                         failed_csum = 0;
1782                                 }
1783                         }
1784                         FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1785                         continue;
1786                 }
1787
1788                 if ((inode->i_flags & EXT4_CASEFOLD_FL) &&
1789                     ((!LINUX_S_ISDIR(inode->i_mode) &&
1790                       fix_problem(ctx, PR_1_CASEFOLD_NONDIR, &pctx)) ||
1791                      (!casefold_fs &&
1792                       fix_problem(ctx, PR_1_CASEFOLD_FEATURE, &pctx)))) {
1793                         inode->i_flags &= ~EXT4_CASEFOLD_FL;
1794                         e2fsck_write_inode(ctx, ino, inode, "pass1");
1795                 }
1796
1797                 /* Conflicting inlinedata/extents inode flags? */
1798                 if ((inode->i_flags & EXT4_INLINE_DATA_FL) &&
1799                     (inode->i_flags & EXT4_EXTENTS_FL)) {
1800                         int res = fix_inline_data_extents_file(ctx, ino, inode,
1801                                                                inode_size,
1802                                                                &pctx);
1803                         if (res < 0) {
1804                                 /* skip FINISH_INODE_LOOP */
1805                                 continue;
1806                         }
1807                 }
1808
1809                 /* Test for incorrect inline_data flags settings. */
1810                 if ((inode->i_flags & EXT4_INLINE_DATA_FL) && !inlinedata_fs &&
1811                     (ino >= EXT2_FIRST_INODE(fs->super))) {
1812                         size_t size = 0;
1813
1814                         pctx.errcode = get_inline_data_ea_size(fs, ino, inode,
1815                                                                &size);
1816                         if (!pctx.errcode &&
1817                             fix_problem(ctx, PR_1_INLINE_DATA_FEATURE, &pctx)) {
1818                                 e2fsck_pass1_fix_lock(ctx);
1819                                 ext2fs_set_feature_inline_data(sb);
1820                                 ext2fs_mark_super_dirty(fs);
1821                                 e2fsck_pass1_fix_unlock(ctx);
1822                                 inlinedata_fs = 1;
1823                         } else if (fix_problem(ctx, PR_1_INLINE_DATA_SET, &pctx)) {
1824                                 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1825                                 /* skip FINISH_INODE_LOOP */
1826                                 continue;
1827                         }
1828                 }
1829
1830                 /* Test for inline data flag but no attr */
1831                 if ((inode->i_flags & EXT4_INLINE_DATA_FL) && inlinedata_fs &&
1832                     (ino >= EXT2_FIRST_INODE(fs->super))) {
1833                         size_t size = 0;
1834                         errcode_t err;
1835                         int flags;
1836
1837                         flags = fs->flags;
1838                         if (failed_csum)
1839                                 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
1840                         err = get_inline_data_ea_size(fs, ino, inode, &size);
1841                         fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
1842                                     (fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
1843
1844                         switch (err) {
1845                         case 0:
1846                                 /* Everything is awesome... */
1847                                 break;
1848                         case EXT2_ET_BAD_EA_BLOCK_NUM:
1849                         case EXT2_ET_BAD_EA_HASH:
1850                         case EXT2_ET_BAD_EA_HEADER:
1851                         case EXT2_ET_EA_BAD_NAME_LEN:
1852                         case EXT2_ET_EA_BAD_VALUE_SIZE:
1853                         case EXT2_ET_EA_KEY_NOT_FOUND:
1854                         case EXT2_ET_EA_NO_SPACE:
1855                         case EXT2_ET_MISSING_EA_FEATURE:
1856                         case EXT2_ET_INLINE_DATA_CANT_ITERATE:
1857                         case EXT2_ET_INLINE_DATA_NO_BLOCK:
1858                         case EXT2_ET_INLINE_DATA_NO_SPACE:
1859                         case EXT2_ET_NO_INLINE_DATA:
1860                         case EXT2_ET_EXT_ATTR_CSUM_INVALID:
1861                         case EXT2_ET_EA_BAD_VALUE_OFFSET:
1862                         case EXT2_ET_EA_INODE_CORRUPTED:
1863                                 /* broken EA or no system.data EA; truncate */
1864                                 if (fix_problem(ctx, PR_1_INLINE_DATA_NO_ATTR,
1865                                                 &pctx)) {
1866                                         err = ext2fs_inode_size_set(fs, inode, 0);
1867                                         if (err) {
1868                                                 pctx.errcode = err;
1869                                                 ctx->flags |= E2F_FLAG_ABORT;
1870                                                 goto endit;
1871                                         }
1872                                         inode->i_flags &= ~EXT4_INLINE_DATA_FL;
1873                                         memset(&inode->i_block, 0,
1874                                                sizeof(inode->i_block));
1875                                         e2fsck_write_inode(ctx, ino, inode,
1876                                                            "pass1");
1877                                         failed_csum = 0;
1878                                 }
1879                                 break;
1880                         default:
1881                                 /* Some other kind of non-xattr error? */
1882                                 pctx.errcode = err;
1883                                 ctx->flags |= E2F_FLAG_ABORT;
1884                                 goto endit;
1885                         }
1886                 }
1887
1888                 /*
1889                  * Test for incorrect extent flag settings.
1890                  *
1891                  * On big-endian machines we must be careful:
1892                  * When the inode is read, the i_block array is not swapped
1893                  * if the extent flag is set.  Therefore if we are testing
1894                  * for or fixing a wrongly-set flag, we must potentially
1895                  * (un)swap before testing, or after fixing.
1896                  */
1897
1898                 /*
1899                  * In this case the extents flag was set when read, so
1900                  * extent_header_verify is ok.  If the inode is cleared,
1901                  * no need to swap... so no extra swapping here.
1902                  */
1903                 if ((inode->i_flags & EXT4_EXTENTS_FL) && !extent_fs &&
1904                     (inode->i_links_count || (ino == EXT2_BAD_INO) ||
1905                      (ino == EXT2_ROOT_INO) || (ino == EXT2_JOURNAL_INO))) {
1906                         if ((ext2fs_extent_header_verify(inode->i_block,
1907                                                  sizeof(inode->i_block)) == 0) &&
1908                             fix_problem(ctx, PR_1_EXTENT_FEATURE, &pctx)) {
1909                                 e2fsck_pass1_fix_lock(ctx);
1910                                 ext2fs_set_feature_extents(sb);
1911                                 ext2fs_mark_super_dirty(fs);
1912                                 extent_fs = 1;
1913                                 e2fsck_pass1_fix_unlock(ctx);
1914                         } else if (fix_problem(ctx, PR_1_EXTENTS_SET, &pctx)) {
1915                         clear_inode:
1916                                 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1917                                 if (ino == EXT2_BAD_INO)
1918                                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map,
1919                                                                  ino);
1920                                 /* skip FINISH_INODE_LOOP */
1921                                 continue;
1922                         }
1923                 }
1924
1925                 /*
1926                  * For big-endian machines:
1927                  * If the inode didn't have the extents flag set when it
1928                  * was read, then the i_blocks array was swapped.  To test
1929                  * as an extents header, we must swap it back first.
1930                  * IF we then set the extents flag, the entire i_block
1931                  * array must be un/re-swapped to make it proper extents data.
1932                  */
1933                 if (extent_fs && !(inode->i_flags & EXT4_EXTENTS_FL) &&
1934                     (inode->i_links_count || (ino == EXT2_BAD_INO) ||
1935                      (ino == EXT2_ROOT_INO) || (ino == EXT2_JOURNAL_INO)) &&
1936                     (LINUX_S_ISREG(inode->i_mode) ||
1937                      LINUX_S_ISDIR(inode->i_mode))) {
1938                         void *ehp;
1939 #ifdef WORDS_BIGENDIAN
1940                         __u32 tmp_block[EXT2_N_BLOCKS];
1941
1942                         for (i = 0; i < EXT2_N_BLOCKS; i++)
1943                                 tmp_block[i] = ext2fs_swab32(inode->i_block[i]);
1944                         ehp = tmp_block;
1945 #else
1946                         ehp = inode->i_block;
1947 #endif
1948                         if ((ext2fs_extent_header_verify(ehp,
1949                                          sizeof(inode->i_block)) == 0) &&
1950                             (fix_problem(ctx, PR_1_UNSET_EXTENT_FL, &pctx))) {
1951                                 inode->i_flags |= EXT4_EXTENTS_FL;
1952 #ifdef WORDS_BIGENDIAN
1953                                 memcpy(inode->i_block, tmp_block,
1954                                        sizeof(inode->i_block));
1955 #endif
1956                                 e2fsck_write_inode(ctx, ino, inode, "pass1");
1957                                 failed_csum = 0;
1958                         }
1959                 }
1960
1961                 if (ino == EXT2_BAD_INO) {
1962                         struct process_block_struct pb;
1963
1964                         if ((failed_csum || inode->i_mode || inode->i_uid ||
1965                              inode->i_gid || inode->i_links_count ||
1966                              (inode->i_flags & EXT4_INLINE_DATA_FL) ||
1967                              inode->i_file_acl) &&
1968                             fix_problem(ctx, PR_1_INVALID_BAD_INODE, &pctx)) {
1969                                 memset(inode, 0, sizeof(struct ext2_inode));
1970                                 e2fsck_write_inode(ctx, ino, inode,
1971                                                    "clear bad inode");
1972                                 failed_csum = 0;
1973                         }
1974
1975                         e2fsck_pass1_block_map_r_lock(ctx);
1976                         pctx.errcode = ext2fs_copy_bitmap(ctx->global_ctx ?
1977                                         ctx->global_ctx->block_found_map :
1978                                         ctx->block_found_map, &pb.fs_meta_blocks);
1979                         e2fsck_pass1_block_map_r_unlock(ctx);
1980                         if (pctx.errcode) {
1981                                 pctx.num = 4;
1982                                 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
1983                                 ctx->flags |= E2F_FLAG_ABORT;
1984                                 goto endit;
1985                         }
1986                         pb.ino = EXT2_BAD_INO;
1987                         pb.num_blocks = pb.last_block = 0;
1988                         pb.last_db_block = -1;
1989                         pb.num_illegal_blocks = 0;
1990                         pb.suppress = 0; pb.clear = 0; pb.is_dir = 0;
1991                         pb.is_reg = 0; pb.fragmented = 0; pb.bbcheck = 0;
1992                         pb.inode = inode;
1993                         pb.pctx = &pctx;
1994                         pb.ctx = ctx;
1995                         pctx.errcode = ext2fs_block_iterate3(fs, ino, 0,
1996                                      block_buf, process_bad_block, &pb);
1997                         ext2fs_free_block_bitmap(pb.fs_meta_blocks);
1998                         if (pctx.errcode) {
1999                                 fix_problem(ctx, PR_1_BLOCK_ITERATE, &pctx);
2000                                 ctx->flags |= E2F_FLAG_ABORT;
2001                                 goto endit;
2002                         }
2003                         if (pb.bbcheck)
2004                                 if (!fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK_PROMPT, &pctx)) {
2005                                 ctx->flags |= E2F_FLAG_ABORT;
2006                                 goto endit;
2007                         }
2008                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
2009                         clear_problem_context(&pctx);
2010                         FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
2011                         continue;
2012                 } else if (ino == EXT2_ROOT_INO) {
2013                         /*
2014                          * Make sure the root inode is a directory; if
2015                          * not, offer to clear it.  It will be
2016                          * regenerated in pass #3.
2017                          */
2018                         if (!LINUX_S_ISDIR(inode->i_mode)) {
2019                                 if (fix_problem(ctx, PR_1_ROOT_NO_DIR, &pctx))
2020                                         goto clear_inode;
2021                         }
2022                         /*
2023                          * If dtime is set, offer to clear it.  mke2fs
2024                          * version 0.2b created filesystems with the
2025                          * dtime field set for the root and lost+found
2026                          * directories.  We won't worry about
2027                          * /lost+found, since that can be regenerated
2028                          * easily.  But we will fix the root directory
2029                          * as a special case.
2030                          */
2031                         if (inode->i_dtime && inode->i_links_count) {
2032                                 if (fix_problem(ctx, PR_1_ROOT_DTIME, &pctx)) {
2033                                         inode->i_dtime = 0;
2034                                         e2fsck_write_inode(ctx, ino, inode,
2035                                                            "pass1");
2036                                         failed_csum = 0;
2037                                 }
2038                         }
2039                 } else if (ino == EXT2_JOURNAL_INO) {
2040                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
2041                         if (fs->super->s_journal_inum == EXT2_JOURNAL_INO) {
2042                                 if (!LINUX_S_ISREG(inode->i_mode) &&
2043                                     fix_problem(ctx, PR_1_JOURNAL_BAD_MODE,
2044                                                 &pctx)) {
2045                                         inode->i_mode = LINUX_S_IFREG;
2046                                         e2fsck_write_inode(ctx, ino, inode,
2047                                                            "pass1");
2048                                         failed_csum = 0;
2049                                 }
2050                                 check_blocks(ctx, &pctx, block_buf, NULL);
2051                                 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
2052                                 continue;
2053                         }
2054                         if ((inode->i_links_count ||
2055                              inode->i_blocks || inode->i_block[0]) &&
2056                             fix_problem(ctx, PR_1_JOURNAL_INODE_NOT_CLEAR,
2057                                         &pctx)) {
2058                                 memset(inode, 0, inode_size);
2059                                 ext2fs_icount_store(ctx->inode_link_info,
2060                                                     ino, 0);
2061                                 e2fsck_write_inode_full(ctx, ino, inode,
2062                                                         inode_size, "pass1");
2063                                 failed_csum = 0;
2064                         }
2065                 } else if (quota_inum_is_reserved(fs, ino)) {
2066                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
2067                         if (ext2fs_has_feature_quota(fs->super) &&
2068                             quota_inum_is_super(fs->super, ino)) {
2069                                 if (!LINUX_S_ISREG(inode->i_mode) &&
2070                                     fix_problem(ctx, PR_1_QUOTA_BAD_MODE,
2071                                                         &pctx)) {
2072                                         inode->i_mode = LINUX_S_IFREG;
2073                                         e2fsck_write_inode(ctx, ino, inode,
2074                                                         "pass1");
2075                                         failed_csum = 0;
2076                                 }
2077                                 check_blocks(ctx, &pctx, block_buf, NULL);
2078                                 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
2079                                 continue;
2080                         }
2081                         if ((inode->i_links_count ||
2082                              inode->i_blocks || inode->i_block[0]) &&
2083                             fix_problem(ctx, PR_1_QUOTA_INODE_NOT_CLEAR,
2084                                         &pctx)) {
2085                                 memset(inode, 0, inode_size);
2086                                 ext2fs_icount_store(ctx->inode_link_info,
2087                                                     ino, 0);
2088                                 e2fsck_write_inode_full(ctx, ino, inode,
2089                                                         inode_size, "pass1");
2090                                 failed_csum = 0;
2091                         }
2092                 } else if (ino == fs->super->s_orphan_file_inum) {
2093                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
2094                         if (ext2fs_has_feature_orphan_file(fs->super)) {
2095                                 if (!LINUX_S_ISREG(inode->i_mode) &&
2096                                     fix_problem(ctx, PR_1_ORPHAN_FILE_BAD_MODE,
2097                                                 &pctx)) {
2098                                         inode->i_mode = LINUX_S_IFREG;
2099                                         e2fsck_write_inode(ctx, ino, inode,
2100                                                            "pass1");
2101                                         failed_csum = 0;
2102                                 }
2103                                 check_blocks(ctx, &pctx, block_buf, NULL);
2104                                 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
2105                                 continue;
2106                         }
2107                         if ((inode->i_links_count ||
2108                              inode->i_blocks || inode->i_block[0]) &&
2109                             fix_problem(ctx, PR_1_ORPHAN_FILE_NOT_CLEAR,
2110                                         &pctx)) {
2111                                 memset(inode, 0, inode_size);
2112                                 ext2fs_icount_store(ctx->inode_link_info, ino,
2113                                                     0);
2114                                 e2fsck_write_inode_full(ctx, ino, inode,
2115                                                         inode_size, "pass1");
2116                                 failed_csum = 0;
2117                         }
2118                 } else if (ino < EXT2_FIRST_INODE(fs->super)) {
2119                         problem_t problem = 0;
2120
2121                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
2122                         if (ino == EXT2_BOOT_LOADER_INO) {
2123                                 if (LINUX_S_ISDIR(inode->i_mode))
2124                                         problem = PR_1_RESERVED_BAD_MODE;
2125                         } else if (ino == EXT2_RESIZE_INO) {
2126                                 if (inode->i_mode &&
2127                                     !LINUX_S_ISREG(inode->i_mode))
2128                                         problem = PR_1_RESERVED_BAD_MODE;
2129                         } else {
2130                                 if (inode->i_mode != 0)
2131                                         problem = PR_1_RESERVED_BAD_MODE;
2132                         }
2133                         if (problem) {
2134                                 if (fix_problem(ctx, problem, &pctx)) {
2135                                         inode->i_mode = 0;
2136                                         e2fsck_write_inode(ctx, ino, inode,
2137                                                            "pass1");
2138                                         failed_csum = 0;
2139                                 }
2140                         }
2141                         check_blocks(ctx, &pctx, block_buf, NULL);
2142                         FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
2143                         continue;
2144                 }
2145
2146                 if (!inode->i_links_count) {
2147                         FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
2148                         continue;
2149                 }
2150                 /*
2151                  * n.b.  0.3c ext2fs code didn't clear i_links_count for
2152                  * deleted files.  Oops.
2153                  *
2154                  * Since all new ext2 implementations get this right,
2155                  * we now assume that the case of non-zero
2156                  * i_links_count and non-zero dtime means that we
2157                  * should keep the file, not delete it.
2158                  *
2159                  */
2160                 if (inode->i_dtime) {
2161                         if (fix_problem(ctx, PR_1_SET_DTIME, &pctx)) {
2162                                 inode->i_dtime = 0;
2163                                 e2fsck_write_inode(ctx, ino, inode, "pass1");
2164                                 failed_csum = 0;
2165                         }
2166                 }
2167
2168                 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
2169                 switch (fs->super->s_creator_os) {
2170                     case EXT2_OS_HURD:
2171                         frag = inode->osd2.hurd2.h_i_frag;
2172                         fsize = inode->osd2.hurd2.h_i_fsize;
2173                         break;
2174                     default:
2175                         frag = fsize = 0;
2176                 }
2177
2178                 if (inode->i_faddr || frag || fsize ||
2179                     (!ext2fs_has_feature_largedir(fs->super) &&
2180                     (LINUX_S_ISDIR(inode->i_mode) && inode->i_size_high)))
2181                         mark_inode_bad(ctx, ino);
2182                 if ((fs->super->s_creator_os != EXT2_OS_HURD) &&
2183                     !ext2fs_has_feature_64bit(fs->super) &&
2184                     inode->osd2.linux2.l_i_file_acl_high != 0)
2185                         mark_inode_bad(ctx, ino);
2186                 if ((fs->super->s_creator_os != EXT2_OS_HURD) &&
2187                     !ext2fs_has_feature_huge_file(fs->super) &&
2188                     (inode->osd2.linux2.l_i_blocks_hi != 0))
2189                         mark_inode_bad(ctx, ino);
2190                 if (inode->i_flags & EXT2_IMAGIC_FL) {
2191                         if (imagic_fs) {
2192                                 if (!ctx->inode_imagic_map)
2193                                         alloc_imagic_map(ctx);
2194                                 ext2fs_mark_inode_bitmap2(ctx->inode_imagic_map,
2195                                                          ino);
2196                         } else {
2197                                 if (fix_problem(ctx, PR_1_SET_IMAGIC, &pctx)) {
2198                                         inode->i_flags &= ~EXT2_IMAGIC_FL;
2199                                         e2fsck_write_inode(ctx, ino,
2200                                                            inode, "pass1");
2201                                         failed_csum = 0;
2202                                 }
2203                         }
2204                 }
2205
2206                 check_inode_extra_space(ctx, &pctx, &ea_ibody_quota);
2207                 check_is_really_dir(ctx, &pctx, block_buf);
2208
2209                 /*
2210                  * ext2fs_inode_has_valid_blocks2 does not actually look
2211                  * at i_block[] values, so not endian-sensitive here.
2212                  */
2213                 if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL) &&
2214                     LINUX_S_ISLNK(inode->i_mode) &&
2215                     !ext2fs_inode_has_valid_blocks2(fs, inode) &&
2216                     fix_problem(ctx, PR_1_FAST_SYMLINK_EXTENT_FL, &pctx)) {
2217                         inode->i_flags &= ~EXT4_EXTENTS_FL;
2218                         e2fsck_write_inode(ctx, ino, inode, "pass1");
2219                         failed_csum = 0;
2220                 }
2221
2222                 if ((inode->i_flags & EXT4_ENCRYPT_FL) &&
2223                     add_encrypted_file(ctx, &pctx) < 0)
2224                         goto clear_inode;
2225
2226                 if (casefold_fs && inode->i_flags & EXT4_CASEFOLD_FL)
2227                         ext2fs_mark_inode_bitmap2(ctx->inode_casefold_map, ino);
2228
2229                 if (LINUX_S_ISDIR(inode->i_mode)) {
2230                         ext2fs_mark_inode_bitmap2(ctx->inode_dir_map, ino);
2231                         e2fsck_add_dir_info(ctx, ino, 0);
2232                         ctx->fs_directory_count++;
2233                         if (inode->i_flags & EXT4_CASEFOLD_FL)
2234                                 add_casefolded_dir(ctx, ino);
2235                 } else if (LINUX_S_ISREG (inode->i_mode)) {
2236                         ext2fs_mark_inode_bitmap2(ctx->inode_reg_map, ino);
2237                         ctx->fs_regular_count++;
2238                 } else if (LINUX_S_ISCHR (inode->i_mode) &&
2239                            e2fsck_pass1_check_device_inode(fs, inode)) {
2240                         check_extents_inlinedata(ctx, &pctx);
2241                         check_immutable(ctx, &pctx);
2242                         check_size(ctx, &pctx);
2243                         ctx->fs_chardev_count++;
2244                 } else if (LINUX_S_ISBLK (inode->i_mode) &&
2245                            e2fsck_pass1_check_device_inode(fs, inode)) {
2246                         check_extents_inlinedata(ctx, &pctx);
2247                         check_immutable(ctx, &pctx);
2248                         check_size(ctx, &pctx);
2249                         ctx->fs_blockdev_count++;
2250                 } else if (LINUX_S_ISLNK (inode->i_mode) &&
2251                            e2fsck_pass1_check_symlink(fs, ino, inode,
2252                                                       block_buf)) {
2253                         check_immutable(ctx, &pctx);
2254                         ctx->fs_symlinks_count++;
2255                         if (inode->i_flags & EXT4_INLINE_DATA_FL) {
2256                                 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
2257                                 continue;
2258                         } else if (ext2fs_is_fast_symlink(inode)) {
2259                                 ctx->fs_fast_symlinks_count++;
2260                                 check_blocks(ctx, &pctx, block_buf,
2261                                              &ea_ibody_quota);
2262                                 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
2263                                 continue;
2264                         }
2265                 }
2266                 else if (LINUX_S_ISFIFO (inode->i_mode) &&
2267                          e2fsck_pass1_check_device_inode(fs, inode)) {
2268                         check_extents_inlinedata(ctx, &pctx);
2269                         check_immutable(ctx, &pctx);
2270                         check_size(ctx, &pctx);
2271                         ctx->fs_fifo_count++;
2272                 } else if ((LINUX_S_ISSOCK (inode->i_mode)) &&
2273                            e2fsck_pass1_check_device_inode(fs, inode)) {
2274                         check_extents_inlinedata(ctx, &pctx);
2275                         check_immutable(ctx, &pctx);
2276                         check_size(ctx, &pctx);
2277                         ctx->fs_sockets_count++;
2278                 } else
2279                         mark_inode_bad(ctx, ino);
2280                 if (!(inode->i_flags & EXT4_EXTENTS_FL) &&
2281                     !(inode->i_flags & EXT4_INLINE_DATA_FL)) {
2282                         if (inode->i_block[EXT2_IND_BLOCK])
2283                                 ctx->fs_ind_count++;
2284                         if (inode->i_block[EXT2_DIND_BLOCK])
2285                                 ctx->fs_dind_count++;
2286                         if (inode->i_block[EXT2_TIND_BLOCK])
2287                                 ctx->fs_tind_count++;
2288                 }
2289                 if (!(inode->i_flags & EXT4_EXTENTS_FL) &&
2290                     !(inode->i_flags & EXT4_INLINE_DATA_FL) &&
2291                     (inode->i_block[EXT2_IND_BLOCK] ||
2292                      inode->i_block[EXT2_DIND_BLOCK] ||
2293                      inode->i_block[EXT2_TIND_BLOCK] ||
2294                      ext2fs_file_acl_block(fs, inode))) {
2295                         struct process_inode_block *itp;
2296
2297                         itp = &inodes_to_process[process_inode_count];
2298                         itp->ino = ino;
2299                         itp->ea_ibody_quota = ea_ibody_quota;
2300                         if (inode_size < sizeof(struct ext2_inode_large))
2301                                 memcpy(&itp->inode, inode, inode_size);
2302                         else
2303                                 memcpy(&itp->inode, inode, sizeof(itp->inode));
2304                         process_inode_count++;
2305                 } else
2306                         check_blocks(ctx, &pctx, block_buf, &ea_ibody_quota);
2307
2308                 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
2309
2310                 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
2311                         goto endit;
2312
2313                 if (process_inode_count >= ctx->process_inode_size) {
2314                         process_inodes(ctx, block_buf, inodes_to_process,
2315                                        &process_inode_count);
2316
2317                         if (e2fsck_should_abort(ctx))
2318                                 goto endit;
2319                 }
2320         }
2321         process_inodes(ctx, block_buf, inodes_to_process,
2322                        &process_inode_count);
2323         ext2fs_close_inode_scan(scan);
2324         scan = NULL;
2325
2326         if (ctx->ea_block_quota_blocks) {
2327                 ea_refcount_free(ctx->ea_block_quota_blocks);
2328                 ctx->ea_block_quota_blocks = 0;
2329         }
2330
2331         if (ctx->ea_block_quota_inodes) {
2332                 ea_refcount_free(ctx->ea_block_quota_inodes);
2333                 ctx->ea_block_quota_inodes = 0;
2334         }
2335
2336         /* We don't need the encryption policy => ID map any more */
2337         destroy_encryption_policy_map(ctx);
2338
2339         if (ctx->flags & E2F_FLAG_RESTART) {
2340                 /*
2341                  * Only the master copy of the superblock and block
2342                  * group descriptors are going to be written during a
2343                  * restart, so set the superblock to be used to be the
2344                  * master superblock.
2345                  */
2346                 ctx->use_superblock = 0;
2347                 goto endit;
2348         }
2349
2350         if (ctx->large_dirs && !ext2fs_has_feature_largedir(fs->super)) {
2351                 if (fix_problem(ctx, PR_2_FEATURE_LARGE_DIRS, &pctx)) {
2352                         ext2fs_set_feature_largedir(fs->super);
2353                         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
2354                         ext2fs_mark_super_dirty(fs);
2355                 }
2356                 if (fs->super->s_rev_level == EXT2_GOOD_OLD_REV &&
2357                     fix_problem(ctx, PR_1_FS_REV_LEVEL, &pctx)) {
2358                         ext2fs_update_dynamic_rev(fs);
2359                         ext2fs_mark_super_dirty(fs);
2360                 }
2361         }
2362
2363         ctx->flags |= E2F_FLAG_ALLOC_OK;
2364 endit:
2365         e2fsck_use_inode_shortcuts(ctx, 0);
2366         ext2fs_free_mem(&inodes_to_process);
2367         inodes_to_process = 0;
2368
2369         if (scan)
2370                 ext2fs_close_inode_scan(scan);
2371         if (block_buf)
2372                 ext2fs_free_mem(&block_buf);
2373         if (inode)
2374                 ext2fs_free_mem(&inode);
2375
2376         /*
2377          * The l+f inode may have been cleared, so zap it now and
2378          * later passes will recalculate it if necessary
2379          */
2380         ctx->lost_and_found = 0;
2381
2382         if ((ctx->flags & E2F_FLAG_SIGNAL_MASK) == 0)
2383                 print_resource_track(ctx, _("Pass 1"), &rtrack, ctx->fs->io);
2384         else
2385                 ctx->invalid_bitmaps++;
2386 }
2387
2388 #ifdef HAVE_PTHREAD
2389 static errcode_t e2fsck_pass1_copy_bitmap(ext2_filsys fs, ext2fs_generic_bitmap *src,
2390                                           ext2fs_generic_bitmap *dest)
2391 {
2392         errcode_t ret;
2393
2394         ret = ext2fs_copy_bitmap(*src, dest);
2395         if (ret)
2396                 return ret;
2397
2398         (*dest)->fs = fs;
2399
2400         return 0;
2401 }
2402
2403 static void e2fsck_pass1_free_bitmap(ext2fs_generic_bitmap *bitmap)
2404 {
2405         if (*bitmap) {
2406                 ext2fs_free_generic_bmap(*bitmap);
2407                 *bitmap = NULL;
2408         }
2409
2410 }
2411
2412 static errcode_t e2fsck_pass1_merge_bitmap(ext2_filsys fs, ext2fs_generic_bitmap *src,
2413                                           ext2fs_generic_bitmap *dest)
2414 {
2415         errcode_t ret = 0;
2416
2417         if (*src) {
2418                 if (*dest == NULL) {
2419                         *dest = *src;
2420                         *src = NULL;
2421                 } else {
2422                         ret = ext2fs_merge_bitmap(*src, *dest, NULL, NULL);
2423                         if (ret)
2424                                 return ret;
2425                 }
2426                 (*dest)->fs = fs;
2427         }
2428
2429         return 0;
2430 }
2431
2432 static errcode_t e2fsck_pass1_copy_fs(ext2_filsys dest, e2fsck_t src_context,
2433                                       ext2_filsys src)
2434 {
2435         errcode_t       retval;
2436
2437         memcpy(dest, src, sizeof(struct struct_ext2_filsys));
2438         dest->inode_map = NULL;
2439         dest->block_map = NULL;
2440         dest->badblocks = NULL;
2441         if (dest->dblist)
2442                 dest->dblist->fs = dest;
2443         if (src->block_map) {
2444                 retval = e2fsck_pass1_copy_bitmap(dest, &src->block_map,
2445                                                   &dest->block_map);
2446                 if (retval)
2447                         return retval;
2448         }
2449         if (src->inode_map) {
2450                 retval = e2fsck_pass1_copy_bitmap(dest, &src->inode_map,
2451                                                   &dest->inode_map);
2452                 if (retval)
2453                         return retval;
2454         }
2455
2456         if (src->badblocks) {
2457                 retval = ext2fs_badblocks_copy(src->badblocks,
2458                                                &dest->badblocks);
2459                 if (retval)
2460                         return retval;
2461         }
2462
2463         /* disable it for now */
2464         src_context->openfs_flags &= ~EXT2_FLAG_EXCLUSIVE;
2465         retval = ext2fs_open_channel(dest, src_context->io_options,
2466                                      src_context->io_manager,
2467                                      src_context->openfs_flags,
2468                                      src->io->block_size);
2469         if (retval)
2470                 return retval;
2471
2472         /* Block size might not be default */
2473         io_channel_set_blksize(dest->io, src->io->block_size);
2474         ehandler_init(dest->io);
2475
2476         assert(dest->io->magic == src->io->magic);
2477         assert(dest->io->manager == src->io->manager);
2478         assert(strcmp(dest->io->name, src->io->name) == 0);
2479         assert(dest->io->block_size == src->io->block_size);
2480         assert(dest->io->read_error == src->io->read_error);
2481         assert(dest->io->write_error == src->io->write_error);
2482         assert(dest->io->refcount == src->io->refcount);
2483         assert(dest->io->flags == src->io->flags);
2484         assert(dest->io->app_data == dest);
2485         assert(src->io->app_data == src);
2486         assert(dest->io->align == src->io->align);
2487
2488         /* The data should be written to disk immediately */
2489         dest->io->flags |= CHANNEL_FLAGS_WRITETHROUGH;
2490         /* icache will be rebuilt if needed, so do not copy from @src */
2491         src->icache = NULL;
2492         return 0;
2493 }
2494
2495 static int e2fsck_pass1_merge_fs(ext2_filsys dest, ext2_filsys src)
2496 {
2497         struct ext2_inode_cache *icache = dest->icache;
2498         errcode_t retval = 0;
2499         io_channel dest_io;
2500         io_channel dest_image_io;
2501         ext2fs_inode_bitmap inode_map;
2502         ext2fs_block_bitmap block_map;
2503         ext2_badblocks_list badblocks;
2504         ext2_dblist dblist;
2505         int flags;
2506         e2fsck_t dest_ctx = dest->priv_data;
2507
2508         dest_io = dest->io;
2509         dest_image_io = dest->image_io;
2510         inode_map = dest->inode_map;
2511         block_map = dest->block_map;
2512         badblocks = dest->badblocks;
2513         dblist = dest->dblist;
2514         flags = dest->flags;
2515
2516         memcpy(dest, src, sizeof(struct struct_ext2_filsys));
2517         dest->io = dest_io;
2518         dest->image_io = dest_image_io;
2519         dest->icache = icache;
2520         dest->inode_map = inode_map;
2521         dest->block_map = block_map;
2522         dest->badblocks = badblocks;
2523         dest->dblist = dblist;
2524         dest->priv_data = dest_ctx;
2525         if (dest->dblist)
2526                 dest->dblist->fs = dest;
2527         dest->flags = src->flags | flags;
2528         if (!(src->flags & EXT2_FLAG_VALID) || !(flags & EXT2_FLAG_VALID))
2529                 ext2fs_unmark_valid(dest);
2530
2531         if (src->icache) {
2532                 ext2fs_free_inode_cache(src->icache);
2533                 src->icache = NULL;
2534         }
2535
2536         retval = e2fsck_pass1_merge_bitmap(dest, &src->inode_map,
2537                                            &dest->inode_map);
2538         if (retval)
2539                 goto out;
2540
2541         retval = e2fsck_pass1_merge_bitmap(dest, &src->block_map,
2542                                           &dest->block_map);
2543         if (retval)
2544                 goto out;
2545
2546         if (src->dblist) {
2547                 if (dest->dblist) {
2548                         retval = ext2fs_merge_dblist(src->dblist,
2549                                                      dest->dblist);
2550                         if (retval)
2551                                 goto out;
2552                 } else {
2553                         dest->dblist = src->dblist;
2554                         dest->dblist->fs = dest;
2555                         src->dblist = NULL;
2556                 }
2557         }
2558
2559         if (src->badblocks) {
2560                 if (dest->badblocks == NULL)
2561                         retval = ext2fs_badblocks_copy(src->badblocks,
2562                                                        &dest->badblocks);
2563                 else
2564                         retval = ext2fs_badblocks_merge(src->badblocks,
2565                                                         dest->badblocks);
2566         }
2567 out:
2568         io_channel_close(src->io);
2569         if (src->inode_map)
2570                 ext2fs_free_generic_bmap(src->inode_map);
2571         if (src->block_map)
2572                 ext2fs_free_generic_bmap(src->block_map);
2573         if (src->badblocks)
2574                 ext2fs_badblocks_list_free(src->badblocks);
2575         if (src->dblist)
2576                 ext2fs_free_dblist(src->dblist);
2577
2578         return retval;
2579 }
2580
2581 static void e2fsck_pass1_copy_invalid_bitmaps(e2fsck_t global_ctx,
2582                                               e2fsck_t thread_ctx)
2583 {
2584         dgrp_t i, j;
2585         dgrp_t grp_start = thread_ctx->thread_info.et_group_start;
2586         dgrp_t grp_end = thread_ctx->thread_info.et_group_end;
2587         dgrp_t total = grp_end - grp_start;
2588
2589         thread_ctx->invalid_inode_bitmap_flag =
2590                         e2fsck_allocate_memory(global_ctx, sizeof(int) * total,
2591                                                 "invalid_inode_bitmap");
2592         thread_ctx->invalid_block_bitmap_flag =
2593                         e2fsck_allocate_memory(global_ctx, sizeof(int) * total,
2594                                                "invalid_block_bitmap");
2595         thread_ctx->invalid_inode_table_flag =
2596                         e2fsck_allocate_memory(global_ctx, sizeof(int) * total,
2597                                                "invalid_inode_table");
2598
2599         memcpy(thread_ctx->invalid_block_bitmap_flag,
2600                &global_ctx->invalid_block_bitmap_flag[grp_start],
2601                total * sizeof(int));
2602         memcpy(thread_ctx->invalid_inode_bitmap_flag,
2603                &global_ctx->invalid_inode_bitmap_flag[grp_start],
2604                total * sizeof(int));
2605         memcpy(thread_ctx->invalid_inode_table_flag,
2606                &global_ctx->invalid_inode_table_flag[grp_start],
2607                total * sizeof(int));
2608
2609         thread_ctx->invalid_bitmaps = 0;
2610         for (i = grp_start, j = 0; i < grp_end; i++, j++) {
2611                 if (thread_ctx->invalid_block_bitmap_flag[j])
2612                         thread_ctx->invalid_bitmaps++;
2613                 if (thread_ctx->invalid_inode_bitmap_flag[j])
2614                         thread_ctx->invalid_bitmaps++;
2615                 if (thread_ctx->invalid_inode_table_flag[j])
2616                         thread_ctx->invalid_bitmaps++;
2617         }
2618 }
2619
2620 static void e2fsck_pass1_merge_invalid_bitmaps(e2fsck_t global_ctx,
2621                                                e2fsck_t thread_ctx)
2622 {
2623         dgrp_t grp_start = thread_ctx->thread_info.et_group_start;
2624         dgrp_t grp_end = thread_ctx->thread_info.et_group_end;
2625         dgrp_t total = grp_end - grp_start;
2626
2627         memcpy(&global_ctx->invalid_block_bitmap_flag[grp_start],
2628                thread_ctx->invalid_block_bitmap_flag, total * sizeof(int));
2629         memcpy(&global_ctx->invalid_inode_bitmap_flag[grp_start],
2630                thread_ctx->invalid_inode_bitmap_flag, total * sizeof(int));
2631         memcpy(&global_ctx->invalid_inode_table_flag[grp_start],
2632                thread_ctx->invalid_inode_table_flag, total * sizeof(int));
2633         global_ctx->invalid_bitmaps += thread_ctx->invalid_bitmaps;
2634 }
2635
2636 static errcode_t e2fsck_pass1_thread_prepare(e2fsck_t global_ctx, e2fsck_t *thread_ctx,
2637                                              int thread_index, int num_threads,
2638                                              dgrp_t average_group)
2639 {
2640         errcode_t               retval;
2641         e2fsck_t                thread_context;
2642         ext2_filsys             thread_fs;
2643         ext2_filsys             global_fs = global_ctx->fs;
2644         struct e2fsck_thread    *tinfo;
2645
2646         assert(global_ctx->inode_used_map == NULL);
2647         assert(global_ctx->inode_dir_map == NULL);
2648         assert(global_ctx->inode_bb_map == NULL);
2649         assert(global_ctx->inode_imagic_map == NULL);
2650         assert(global_ctx->inode_reg_map == NULL);
2651         assert(global_ctx->inodes_to_rebuild == NULL);
2652
2653         assert(global_ctx->block_found_map != NULL);
2654         assert(global_ctx->block_metadata_map != NULL);
2655         assert(global_ctx->block_dup_map != NULL);
2656         assert(global_ctx->block_ea_map == NULL);
2657         assert(global_ctx->fs->dblist == NULL);
2658
2659         retval = ext2fs_get_mem(sizeof(struct e2fsck_struct), &thread_context);
2660         if (retval) {
2661                 com_err(global_ctx->program_name, retval, "while allocating memory");
2662                 return retval;
2663         }
2664         memcpy(thread_context, global_ctx, sizeof(struct e2fsck_struct));
2665         thread_context->block_dup_map = NULL;
2666         thread_context->casefolded_dirs = NULL;
2667
2668         retval = e2fsck_allocate_block_bitmap(global_ctx->fs,
2669                                 _("in-use block map"), EXT2FS_BMAP64_RBTREE,
2670                                 "block_found_map", &thread_context->block_found_map);
2671         if (retval)
2672                 goto out_context;
2673
2674         thread_context->global_ctx = global_ctx;
2675         retval = ext2fs_get_mem(sizeof(struct struct_ext2_filsys), &thread_fs);
2676         if (retval) {
2677                 com_err(global_ctx->program_name, retval, "while allocating memory");
2678                 goto out_context;
2679         }
2680
2681         io_channel_flush_cleanup(global_fs->io);
2682         retval = e2fsck_pass1_copy_fs(thread_fs, global_ctx, global_fs);
2683         if (retval) {
2684                 com_err(global_ctx->program_name, retval, "while copying fs");
2685                 goto out_fs;
2686         }
2687         thread_fs->priv_data = thread_context;
2688
2689         thread_context->thread_info.et_thread_index = thread_index;
2690         set_up_logging(thread_context);
2691
2692         tinfo = &thread_context->thread_info;
2693         tinfo->et_group_start = average_group * thread_index;
2694         if (thread_index == global_fs->fs_num_threads - 1)
2695                 tinfo->et_group_end = thread_fs->group_desc_count;
2696         else
2697                 tinfo->et_group_end = average_group * (thread_index + 1);
2698         tinfo->et_group_next = tinfo->et_group_start;
2699         tinfo->et_inode_number = 0;
2700         tinfo->et_log_buf[0] = '\0';
2701         tinfo->et_log_length = 0;
2702         if (thread_context->options & E2F_OPT_MULTITHREAD)
2703                 log_out(thread_context, _("Scan group range [%d, %d)\n"),
2704                         tinfo->et_group_start, tinfo->et_group_end);
2705         thread_context->fs = thread_fs;
2706         retval = quota_init_context(&thread_context->qctx, thread_fs, 0);
2707         if (retval) {
2708                 com_err(global_ctx->program_name, retval,
2709                         "while init quota context");
2710                 goto out_fs;
2711         }
2712         *thread_ctx = thread_context;
2713         e2fsck_pass1_copy_invalid_bitmaps(global_ctx, thread_context);
2714         return 0;
2715 out_fs:
2716         ext2fs_free_mem(&thread_fs);
2717 out_context:
2718         if (thread_context->block_found_map)
2719                 ext2fs_free_mem(&thread_context->block_found_map);
2720         ext2fs_free_mem(&thread_context);
2721         return retval;
2722 }
2723
2724 static void e2fsck_pass1_merge_dir_info(e2fsck_t global_ctx, e2fsck_t thread_ctx)
2725 {
2726         if (thread_ctx->dir_info == NULL)
2727                 return;
2728
2729         if (global_ctx->dir_info == NULL) {
2730                 global_ctx->dir_info = thread_ctx->dir_info;
2731                 thread_ctx->dir_info = NULL;
2732                 return;
2733         }
2734
2735         e2fsck_merge_dir_info(global_ctx, thread_ctx->dir_info,
2736                               global_ctx->dir_info);
2737 }
2738
2739 static void e2fsck_pass1_merge_dx_dir(e2fsck_t global_ctx, e2fsck_t thread_ctx)
2740 {
2741         if (thread_ctx->dx_dir_info == NULL)
2742                 return;
2743
2744         if (global_ctx->dx_dir_info == NULL) {
2745                 global_ctx->dx_dir_info = thread_ctx->dx_dir_info;
2746                 global_ctx->dx_dir_info_size = thread_ctx->dx_dir_info_size;
2747                 global_ctx->dx_dir_info_count = thread_ctx->dx_dir_info_count;
2748                 thread_ctx->dx_dir_info = NULL;
2749                 return;
2750         }
2751
2752         e2fsck_merge_dx_dir(global_ctx, thread_ctx);
2753 }
2754
2755 static inline errcode_t
2756 e2fsck_pass1_merge_icount(ext2_icount_t *dest_icount,
2757                           ext2_icount_t *src_icount)
2758 {
2759         if (*src_icount) {
2760                 if (*dest_icount == NULL) {
2761                         *dest_icount = *src_icount;
2762                         *src_icount = NULL;
2763                 } else {
2764                         errcode_t ret;
2765
2766                         ret = ext2fs_icount_merge(*src_icount,
2767                                                   *dest_icount);
2768                         if (ret)
2769                                 return ret;
2770                 }
2771         }
2772
2773         return 0;
2774 }
2775
2776 static errcode_t e2fsck_pass1_merge_icounts(e2fsck_t global_ctx, e2fsck_t thread_ctx)
2777 {
2778         errcode_t ret;
2779
2780         ret = e2fsck_pass1_merge_icount(&global_ctx->inode_count,
2781                                         &thread_ctx->inode_count);
2782         if (ret)
2783                 return ret;
2784         ret = e2fsck_pass1_merge_icount(&global_ctx->inode_link_info,
2785                                         &thread_ctx->inode_link_info);
2786
2787         return ret;
2788 }
2789
2790 static errcode_t e2fsck_pass1_merge_dirs_to_hash(e2fsck_t global_ctx,
2791                                                  e2fsck_t thread_ctx)
2792 {
2793         errcode_t retval = 0;
2794
2795         if (!thread_ctx->dirs_to_hash)
2796                 return 0;
2797
2798         if (!global_ctx->dirs_to_hash)
2799                 retval = ext2fs_badblocks_copy(thread_ctx->dirs_to_hash,
2800                                                &global_ctx->dirs_to_hash);
2801         else
2802                 retval = ext2fs_badblocks_merge(thread_ctx->dirs_to_hash,
2803                                                 global_ctx->dirs_to_hash);
2804
2805         return retval;
2806 }
2807
2808 static errcode_t e2fsck_pass1_merge_ea_inode_refs(e2fsck_t global_ctx,
2809                                                   e2fsck_t thread_ctx)
2810 {
2811         ea_value_t count;
2812         blk64_t blk;
2813         errcode_t retval;
2814
2815         if (!thread_ctx->ea_inode_refs)
2816                 return 0;
2817
2818         if (!global_ctx->ea_inode_refs) {
2819                 global_ctx->ea_inode_refs = thread_ctx->ea_inode_refs;
2820                 thread_ctx->ea_inode_refs = NULL;
2821                 return 0;
2822         }
2823
2824         ea_refcount_intr_begin(thread_ctx->ea_inode_refs);
2825         while (1) {
2826                 if ((blk = ea_refcount_intr_next(thread_ctx->ea_inode_refs,
2827                                                  &count)) == 0)
2828                         break;
2829                 if (!global_ctx->block_ea_map ||
2830                     !ext2fs_fast_test_block_bitmap2(global_ctx->block_ea_map,
2831                                                     blk)) {
2832                         retval = ea_refcount_store(global_ctx->ea_inode_refs,
2833                                                    blk, count);
2834                         if (retval)
2835                                 return retval;
2836                 }
2837         }
2838
2839         return retval;
2840 }
2841
2842 static ea_value_t ea_refcount_usage(e2fsck_t ctx, blk64_t blk,
2843                                     ea_value_t *orig)
2844 {
2845         ea_value_t count_cur;
2846         ea_value_t count_extra = 0;
2847         ea_value_t count_orig;
2848
2849         ea_refcount_fetch(ctx->refcount_orig, blk, &count_orig);
2850         ea_refcount_fetch(ctx->refcount, blk, &count_cur);
2851         /* most of time this is not needed */
2852         if (ctx->refcount_extra && count_cur == 0)
2853                 ea_refcount_fetch(ctx->refcount_extra, blk, &count_extra);
2854
2855         if (!count_orig)
2856                 count_orig = *orig;
2857         else if (orig)
2858                 *orig = count_orig;
2859
2860         return count_orig + count_extra - count_cur;
2861 }
2862
2863 static errcode_t e2fsck_pass1_merge_ea_refcount(e2fsck_t global_ctx,
2864                                                 e2fsck_t thread_ctx)
2865 {
2866         ea_value_t count;
2867         blk64_t blk;
2868         errcode_t retval = 0;
2869
2870         if (!thread_ctx->refcount)
2871                 return 0;
2872
2873         if (!global_ctx->refcount) {
2874                 global_ctx->refcount = thread_ctx->refcount;
2875                 thread_ctx->refcount = NULL;
2876                 global_ctx->refcount_extra = thread_ctx->refcount;
2877                 thread_ctx->refcount_extra = NULL;
2878                 return 0;
2879         }
2880
2881         ea_refcount_intr_begin(thread_ctx->refcount);
2882         while (1) {
2883                 if ((blk = ea_refcount_intr_next(thread_ctx->refcount,
2884                                                  &count)) == 0)
2885                         break;
2886                 /**
2887                  * this EA has never seen before, so just store its
2888                  * refcount and refcount_extra into global_ctx if needed.
2889                  */
2890                 if (!global_ctx->block_ea_map ||
2891                     !ext2fs_fast_test_block_bitmap2(global_ctx->block_ea_map,
2892                                                     blk)) {
2893                         ea_value_t extra;
2894
2895                         retval = ea_refcount_store(global_ctx->refcount,
2896                                                    blk, count);
2897                         if (retval)
2898                                 return retval;
2899
2900                         if (count > 0 || !thread_ctx->refcount_extra)
2901                                 continue;
2902                         ea_refcount_fetch(thread_ctx->refcount_extra, blk,
2903                                           &extra);
2904                         if (extra == 0)
2905                                 continue;
2906
2907                         if (!global_ctx->refcount_extra) {
2908                                 retval = ea_refcount_create(0,
2909                                                 &global_ctx->refcount_extra);
2910                                 if (retval)
2911                                         return retval;
2912                         }
2913                         retval = ea_refcount_store(global_ctx->refcount_extra,
2914                                                    blk, extra);
2915                         if (retval)
2916                                 return retval;
2917                 } else {
2918                         ea_value_t orig;
2919                         ea_value_t thread_usage;
2920                         ea_value_t global_usage;
2921                         ea_value_t new;
2922
2923                         thread_usage = ea_refcount_usage(thread_ctx,
2924                                                          blk, &orig);
2925                         global_usage = ea_refcount_usage(global_ctx,
2926                                                          blk, &orig);
2927                         if (thread_usage + global_usage <= orig) {
2928                                 new = orig - thread_usage - global_usage;
2929                                 retval = ea_refcount_store(global_ctx->refcount,
2930                                                            blk, new);
2931                                 if (retval)
2932                                         return retval;
2933                                 continue;
2934                         }
2935                         /* update it is as zero */
2936                         retval = ea_refcount_store(global_ctx->refcount,
2937                                                    blk, 0);
2938                         if (retval)
2939                                 return retval;
2940                         /* Ooops, this EA was referenced more than it stated */
2941                         if (!global_ctx->refcount_extra) {
2942                                 retval = ea_refcount_create(0,
2943                                                 &global_ctx->refcount_extra);
2944                                 if (retval)
2945                                         return retval;
2946                         }
2947                         new = global_usage + thread_usage - orig;
2948                         retval = ea_refcount_store(global_ctx->refcount_extra,
2949                                                    blk, new);
2950                         if (retval)
2951                                 return retval;
2952                 }
2953         }
2954
2955         return retval;
2956 }
2957
2958 static errcode_t e2fsck_pass1_merge_casefolded_dirs(e2fsck_t global_ctx,
2959                                                    e2fsck_t thread_ctx)
2960 {
2961         errcode_t retval = 0;
2962
2963         if (!thread_ctx->casefolded_dirs)
2964                 return 0;
2965
2966         if (!global_ctx->casefolded_dirs)
2967                 retval = ext2fs_badblocks_copy(thread_ctx->casefolded_dirs,
2968                                                &global_ctx->casefolded_dirs);
2969         else
2970                 retval = ext2fs_badblocks_merge(thread_ctx->casefolded_dirs,
2971                                                 global_ctx->casefolded_dirs);
2972
2973         return retval;
2974 }
2975
2976 static errcode_t e2fsck_pass1_merge_context(e2fsck_t global_ctx,
2977                                             e2fsck_t thread_ctx)
2978 {
2979         ext2_filsys global_fs = global_ctx->fs;
2980         errcode_t retval;
2981         int i;
2982
2983         global_ctx->fs_directory_count += thread_ctx->fs_directory_count;
2984         global_ctx->fs_regular_count += thread_ctx->fs_regular_count;
2985         global_ctx->fs_blockdev_count += thread_ctx->fs_blockdev_count;
2986         global_ctx->fs_chardev_count += thread_ctx->fs_chardev_count;
2987         global_ctx->fs_links_count += thread_ctx->fs_links_count;
2988         global_ctx->fs_symlinks_count += thread_ctx->fs_symlinks_count;
2989         global_ctx->fs_fast_symlinks_count += thread_ctx->fs_fast_symlinks_count;
2990         global_ctx->fs_fifo_count += thread_ctx->fs_fifo_count;
2991         global_ctx->fs_total_count += thread_ctx->fs_total_count;
2992         global_ctx->fs_badblocks_count += thread_ctx->fs_badblocks_count;
2993         global_ctx->fs_sockets_count += thread_ctx->fs_sockets_count;
2994         global_ctx->fs_ind_count += thread_ctx->fs_ind_count;
2995         global_ctx->fs_dind_count += thread_ctx->fs_dind_count;
2996         global_ctx->fs_tind_count += thread_ctx->fs_tind_count;
2997         global_ctx->fs_fragmented += thread_ctx->fs_fragmented;
2998         global_ctx->fs_fragmented_dir += thread_ctx->fs_fragmented_dir;
2999         global_ctx->large_files += thread_ctx->large_files;
3000         /* threads might enable E2F_OPT_YES */
3001         global_ctx->options |= thread_ctx->options;
3002         global_ctx->flags |= thread_ctx->flags;
3003         /*
3004          * The l+f inode may have been cleared, so zap it now and
3005          * later passes will recalculate it if necessary
3006          */
3007         global_ctx->lost_and_found = 0;
3008         /* merge extent depth count */
3009         for (i = 0; i < MAX_EXTENT_DEPTH_COUNT; i++)
3010                 global_ctx->extent_depth_count[i] +=
3011                         thread_ctx->extent_depth_count[i];
3012
3013         e2fsck_pass1_merge_dir_info(global_ctx, thread_ctx);
3014         e2fsck_pass1_merge_dx_dir(global_ctx, thread_ctx);
3015
3016         retval = e2fsck_pass1_merge_fs(global_ctx->fs, thread_ctx->fs);
3017         if (retval) {
3018                 com_err(global_ctx->program_name, 0, _("while merging fs\n"));
3019                 return retval;
3020         }
3021         retval = e2fsck_pass1_merge_icounts(global_ctx, thread_ctx);
3022         if (retval) {
3023                 com_err(global_ctx->program_name, 0,
3024                         _("while merging icounts\n"));
3025                 return retval;
3026         }
3027
3028         retval = e2fsck_pass1_merge_dirs_to_hash(global_ctx, thread_ctx);
3029         if (retval) {
3030                 com_err(global_ctx->program_name, 0,
3031                         _("while merging dirs to hash\n"));
3032                 return retval;
3033         }
3034
3035         e2fsck_pass1_merge_ea_inode_refs(global_ctx, thread_ctx);
3036         e2fsck_pass1_merge_ea_refcount(global_ctx, thread_ctx);
3037         retval = quota_merge_and_update_usage(global_ctx->qctx,
3038                                               thread_ctx->qctx);
3039         if (retval)
3040                 return retval;
3041
3042         retval = e2fsck_pass1_merge_casefolded_dirs(global_ctx, thread_ctx);
3043         if (retval) {
3044                 com_err(global_ctx->program_name, 0,
3045                         _("while merging casefolded dirs\n"));
3046                 return retval;
3047         }
3048
3049         e2fsck_pass1_merge_invalid_bitmaps(global_ctx, thread_ctx);
3050
3051         retval = e2fsck_pass1_merge_bitmap(global_fs,
3052                                 &thread_ctx->inode_used_map,
3053                                 &global_ctx->inode_used_map);
3054         if (retval)
3055                 return retval;
3056
3057         retval = e2fsck_pass1_merge_bitmap(global_fs,
3058                                 &thread_ctx->inode_bad_map,
3059                                 &global_ctx->inode_bad_map);
3060         if (retval)
3061                 return retval;
3062         retval = e2fsck_pass1_merge_bitmap(global_fs,
3063                                         &thread_ctx->inode_dir_map,
3064                                         &global_ctx->inode_dir_map);
3065         if (retval)
3066                 return retval;
3067         retval = e2fsck_pass1_merge_bitmap(global_fs,
3068                                 &thread_ctx->inode_bb_map,
3069                                 &global_ctx->inode_bb_map);
3070         if (retval)
3071                 return retval;
3072         retval = e2fsck_pass1_merge_bitmap(global_fs,
3073                                 &thread_ctx->inode_imagic_map,
3074                                 &global_ctx->inode_imagic_map);
3075         if (retval)
3076                 return retval;
3077         retval = e2fsck_pass1_merge_bitmap(global_fs,
3078                                 &thread_ctx->inode_reg_map,
3079                                 &global_ctx->inode_reg_map);
3080         if (retval)
3081                 return retval;
3082         retval = e2fsck_pass1_merge_bitmap(global_fs,
3083                                 &thread_ctx->inodes_to_rebuild,
3084                                 &global_ctx->inodes_to_rebuild);
3085         if (retval)
3086                 return retval;
3087         retval = e2fsck_pass1_merge_bitmap(global_fs,
3088                                 &thread_ctx->block_ea_map,
3089                                 &global_ctx->block_ea_map);
3090         if (retval)
3091                 return retval;
3092
3093         if (ext2fs_has_feature_shared_blocks(global_fs->super) &&
3094             !(global_ctx->options & E2F_OPT_UNSHARE_BLOCKS))
3095                 return 0;
3096         /*
3097          * This need be done after merging block_ea_map
3098          * because ea block might be shared, we need exclude
3099          * them from dup blocks.
3100          */
3101         e2fsck_pass1_block_map_w_lock(thread_ctx);
3102         retval = ext2fs_merge_bitmap(thread_ctx->block_found_map,
3103                                      global_ctx->block_found_map,
3104                                      global_ctx->block_dup_map,
3105                                      global_ctx->block_ea_map);
3106         e2fsck_pass1_block_map_w_unlock(thread_ctx);
3107         if (retval == EEXIST)
3108                 global_ctx->flags |= E2F_FLAG_DUP_BLOCK;
3109
3110         return 0;
3111 }
3112
3113 static int e2fsck_pass1_thread_join(e2fsck_t global_ctx, e2fsck_t thread_ctx)
3114 {
3115         errcode_t       retval;
3116
3117         retval = e2fsck_pass1_merge_context(global_ctx, thread_ctx);
3118         ext2fs_free_mem(&thread_ctx->fs);
3119         if (thread_ctx->logf)
3120                 fclose(thread_ctx->logf);
3121         if (thread_ctx->problem_logf) {
3122                 fputs("</problem_log>\n", thread_ctx->problem_logf);
3123                 fclose(thread_ctx->problem_logf);
3124         }
3125         e2fsck_pass1_free_bitmap(&thread_ctx->inode_used_map);
3126         e2fsck_pass1_free_bitmap(&thread_ctx->inode_bad_map);
3127         e2fsck_pass1_free_bitmap(&thread_ctx->inode_dir_map);
3128         e2fsck_pass1_free_bitmap(&thread_ctx->inode_bb_map);
3129         e2fsck_pass1_free_bitmap(&thread_ctx->inode_imagic_map);
3130         e2fsck_pass1_free_bitmap(&thread_ctx->inode_reg_map);
3131         e2fsck_pass1_free_bitmap(&thread_ctx->inodes_to_rebuild);
3132         e2fsck_pass1_free_bitmap(&thread_ctx->block_found_map);
3133         e2fsck_pass1_free_bitmap(&thread_ctx->block_ea_map);
3134         if (thread_ctx->refcount)
3135                 ea_refcount_free(thread_ctx->refcount);
3136         if (thread_ctx->refcount_extra)
3137                 ea_refcount_free(thread_ctx->refcount_extra);
3138         if (thread_ctx->ea_inode_refs)
3139                 ea_refcount_free(thread_ctx->ea_inode_refs);
3140         if (thread_ctx->refcount_orig)
3141                 ea_refcount_free(thread_ctx->refcount_orig);
3142         e2fsck_free_dir_info(thread_ctx);
3143         ext2fs_free_icount(thread_ctx->inode_count);
3144         ext2fs_free_icount(thread_ctx->inode_link_info);
3145         if (thread_ctx->dirs_to_hash)
3146                 ext2fs_badblocks_list_free(thread_ctx->dirs_to_hash);
3147         quota_release_context(&thread_ctx->qctx);
3148         ext2fs_free_mem(&thread_ctx->invalid_block_bitmap_flag);
3149         ext2fs_free_mem(&thread_ctx->invalid_inode_bitmap_flag);
3150         ext2fs_free_mem(&thread_ctx->invalid_inode_table_flag);
3151         ext2fs_free_mem(&thread_ctx);
3152
3153         return retval;
3154 }
3155
3156 static int e2fsck_pass1_threads_join(struct e2fsck_thread_info *infos,
3157                                      e2fsck_t global_ctx)
3158 {
3159         errcode_t                        rc;
3160         errcode_t                        ret = 0;
3161         int                              i;
3162         struct e2fsck_thread_info       *pinfo;
3163         int                              num_threads = global_ctx->fs_num_threads;
3164
3165         /* merge invalid bitmaps will recalculate it */
3166         global_ctx->invalid_bitmaps = 0;
3167         for (i = 0; i < num_threads; i++) {
3168                 pinfo = &infos[i];
3169
3170                 if (!pinfo->eti_started)
3171                         continue;
3172
3173                 rc = pthread_join(pinfo->eti_thread_id, NULL);
3174                 if (rc) {
3175                         com_err(global_ctx->program_name, rc,
3176                                 _("while joining thread\n"));
3177                         if (ret == 0)
3178                                 ret = rc;
3179                 }
3180                 rc = e2fsck_pass1_thread_join(global_ctx, infos[i].eti_thread_ctx);
3181                 if (rc) {
3182                         com_err(global_ctx->program_name, rc,
3183                                 _("while joining pass1 thread\n"));
3184                         if (ret == 0)
3185                                 ret = rc;
3186                 }
3187         }
3188         free(infos);
3189
3190         return ret;
3191 }
3192
3193 static void *e2fsck_pass1_thread(void *arg)
3194 {
3195         struct e2fsck_thread_info       *info = arg;
3196         e2fsck_t                         thread_ctx = info->eti_thread_ctx;
3197 #ifdef DEBUG_THREADS
3198         struct e2fsck_thread_debug      *thread_debug = info->eti_debug;
3199 #endif
3200
3201 #ifdef DEBUG_THREADS
3202         pthread_mutex_lock(&thread_debug->etd_mutex);
3203         while (info->eti_thread_index > thread_debug->etd_finished_threads) {
3204                 pthread_cond_wait(&thread_debug->etd_cond,
3205                                   &thread_debug->etd_mutex);
3206         }
3207         pthread_mutex_unlock(&thread_debug->etd_mutex);
3208 #endif
3209
3210 #ifdef HAVE_SETJMP_H
3211         /*
3212          * When fatal_error() happens, jump to here. The thread
3213          * context's flags will be saved, but its abort_loc will
3214          * be overwritten by original jump buffer for the later
3215          * tests.
3216          */
3217         if (setjmp(thread_ctx->abort_loc)) {
3218                 thread_ctx->flags &= ~E2F_FLAG_SETJMP_OK;
3219                 goto out;
3220         }
3221         thread_ctx->flags |= E2F_FLAG_SETJMP_OK;
3222 #endif
3223
3224         e2fsck_pass1_run(thread_ctx);
3225
3226 out:
3227         if (thread_ctx->options & E2F_OPT_MULTITHREAD)
3228                 log_out(thread_ctx,
3229                         _("Scanned group range [%lu, %lu), inodes %lu\n"),
3230                         thread_ctx->thread_info.et_group_start,
3231                         thread_ctx->thread_info.et_group_end,
3232                         thread_ctx->thread_info.et_inode_number);
3233
3234 #ifdef DEBUG_THREADS
3235         pthread_mutex_lock(&thread_debug->etd_mutex);
3236         thread_debug->etd_finished_threads++;
3237         pthread_cond_broadcast(&thread_debug->etd_cond);
3238         pthread_mutex_unlock(&thread_debug->etd_mutex);
3239 #endif
3240
3241         return NULL;
3242 }
3243
3244 static dgrp_t ext2fs_get_avg_group(ext2_filsys fs)
3245 {
3246 #ifdef HAVE_PTHREAD
3247         dgrp_t average_group;
3248         unsigned flexbg_size;
3249
3250         if (fs->fs_num_threads <= 1)
3251                 return fs->group_desc_count;
3252
3253         average_group = fs->group_desc_count / fs->fs_num_threads;
3254         if (average_group <= 1)
3255                 return 1;
3256
3257         if (ext2fs_has_feature_flex_bg(fs->super)) {
3258                 int times = 1;
3259
3260                 flexbg_size = 1 << fs->super->s_log_groups_per_flex;
3261                 if (average_group % flexbg_size) {
3262                         times = average_group / flexbg_size;
3263                         average_group = times * flexbg_size;
3264                 }
3265         }
3266
3267         return average_group;
3268 #else
3269         return fs->group_desc_count;
3270 #endif
3271 }
3272
3273 static int e2fsck_pass1_threads_start(struct e2fsck_thread_info **pinfo,
3274                                       e2fsck_t global_ctx)
3275 {
3276         struct e2fsck_thread_info       *infos;
3277         pthread_attr_t                   attr;
3278         errcode_t                        retval;
3279         errcode_t                        ret;
3280         struct e2fsck_thread_info       *tmp_pinfo;
3281         int                              i;
3282         e2fsck_t                         thread_ctx;
3283         dgrp_t                           average_group;
3284         int                              num_threads = global_ctx->fs_num_threads;
3285 #ifdef DEBUG_THREADS
3286         struct e2fsck_thread_debug       thread_debug =
3287                 {PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0};
3288
3289         thread_debug.etd_finished_threads = 0;
3290 #endif
3291
3292         retval = pthread_attr_init(&attr);
3293         if (retval) {
3294                 com_err(global_ctx->program_name, retval,
3295                         _("while setting pthread attribute\n"));
3296                 return retval;
3297         }
3298
3299         infos = calloc(num_threads, sizeof(struct e2fsck_thread_info));
3300         if (infos == NULL) {
3301                 retval = -ENOMEM;
3302                 com_err(global_ctx->program_name, retval,
3303                         _("while allocating memory for threads\n"));
3304                 pthread_attr_destroy(&attr);
3305                 return retval;
3306         }
3307
3308         average_group = ext2fs_get_avg_group(global_ctx->fs);
3309         for (i = 0; i < num_threads; i++) {
3310                 tmp_pinfo = &infos[i];
3311                 tmp_pinfo->eti_thread_index = i;
3312 #ifdef DEBUG_THREADS
3313                 tmp_pinfo->eti_debug = &thread_debug;
3314 #endif
3315                 retval = e2fsck_pass1_thread_prepare(global_ctx, &thread_ctx,
3316                                                      i, num_threads,
3317                                                      average_group);
3318                 if (retval) {
3319                         com_err(global_ctx->program_name, retval,
3320                                 _("while preparing pass1 thread\n"));
3321                         break;
3322                 }
3323                 tmp_pinfo->eti_thread_ctx = thread_ctx;
3324
3325                 retval = pthread_create(&tmp_pinfo->eti_thread_id, &attr,
3326                                         &e2fsck_pass1_thread, tmp_pinfo);
3327                 if (retval) {
3328                         com_err(global_ctx->program_name, retval,
3329                                 _("while creating thread\n"));
3330                         e2fsck_pass1_thread_join(global_ctx, thread_ctx);
3331                         break;
3332                 }
3333
3334                 tmp_pinfo->eti_started = 1;
3335         }
3336
3337         /* destroy the thread attribute object, since it is no longer needed */
3338         ret = pthread_attr_destroy(&attr);
3339         if (ret) {
3340                 com_err(global_ctx->program_name, ret,
3341                         _("while destroying thread attribute\n"));
3342                 if (retval == 0)
3343                         retval = ret;
3344         }
3345
3346         if (retval) {
3347                 e2fsck_pass1_threads_join(infos, global_ctx);
3348                 return retval;
3349         }
3350         *pinfo = infos;
3351         return 0;
3352 }
3353
3354 static void e2fsck_pass1_multithread(e2fsck_t global_ctx)
3355 {
3356         struct e2fsck_thread_info *infos = NULL;
3357         errcode_t retval;
3358
3359         retval = e2fsck_pass1_threads_start(&infos, global_ctx);
3360         if (retval) {
3361                 com_err(global_ctx->program_name, retval,
3362                         _("while starting pass1 threads\n"));
3363                 goto out_abort;
3364         }
3365
3366         retval = e2fsck_pass1_threads_join(infos, global_ctx);
3367         if (retval) {
3368                 com_err(global_ctx->program_name, retval,
3369                         _("while joining pass1 threads\n"));
3370                 goto out_abort;
3371         }
3372         return;
3373 out_abort:
3374         global_ctx->flags |= E2F_FLAG_ABORT;
3375         return;
3376 }
3377 #endif
3378
3379 void e2fsck_pass1(e2fsck_t ctx)
3380 {
3381         errcode_t retval;
3382         int need_single = 1;
3383
3384         retval = e2fsck_pass1_prepare(ctx);
3385         if (retval)
3386                 return;
3387 #ifdef HAVE_PTHREAD
3388         if (ctx->fs_num_threads > 1 ||
3389             ctx->options & E2F_OPT_MULTITHREAD) {
3390                 need_single = 0;
3391                 e2fsck_pass1_multithread(ctx);
3392         }
3393 #endif
3394         if (need_single)
3395                 e2fsck_pass1_run(ctx);
3396         e2fsck_pass1_post(ctx);
3397 }
3398
3399 #undef FINISH_INODE_LOOP
3400
3401 /*
3402  * When the inode_scan routines call this callback at the end of the
3403  * glock group, call process_inodes.
3404  */
3405 static errcode_t scan_callback(ext2_filsys fs,
3406                                ext2_inode_scan scan EXT2FS_ATTR((unused)),
3407                                dgrp_t group, void * priv_data)
3408 {
3409         struct scan_callback_struct *scan_struct;
3410         e2fsck_t ctx;
3411         struct e2fsck_thread *tinfo;
3412
3413         scan_struct = (struct scan_callback_struct *) priv_data;
3414         ctx = scan_struct->ctx;
3415
3416         process_inodes((e2fsck_t) fs->priv_data, scan_struct->block_buf,
3417                        scan_struct->inodes_to_process,
3418                        scan_struct->process_inode_count);
3419
3420         if (ctx->progress)
3421                 if ((ctx->progress)(ctx, 1, group+1,
3422                                     ctx->fs->group_desc_count))
3423                         return EXT2_ET_CANCEL_REQUESTED;
3424
3425 #ifdef HAVE_PTHREAD
3426         if (ctx->global_ctx) {
3427                 tinfo = &ctx->thread_info;
3428                 tinfo->et_group_next++;
3429                 if (ctx->options & E2F_OPT_DEBUG &&
3430                     ctx->options & E2F_OPT_MULTITHREAD)
3431                         log_out(ctx, _("group %d finished\n"),
3432                                 tinfo->et_group_next);
3433                 if (tinfo->et_group_next >= tinfo->et_group_end)
3434                         return EXT2_ET_SCAN_FINISHED;
3435         }
3436 #endif
3437
3438         return 0;
3439 }
3440
3441 /*
3442  * Process the inodes in the "inodes to process" list.
3443  */
3444 static void process_inodes(e2fsck_t ctx, char *block_buf,
3445                            struct process_inode_block *inodes_to_process,
3446                            int *process_inode_count)
3447 {
3448         int                     i;
3449         struct ext2_inode       *old_stashed_inode;
3450         ext2_ino_t              old_stashed_ino;
3451         const char              *old_operation;
3452         char                    buf[80];
3453         struct problem_context  pctx;
3454
3455 #if 0
3456         printf("begin process_inodes: ");
3457 #endif
3458         if (*process_inode_count == 0)
3459                 return;
3460         old_operation = ehandler_operation(0);
3461         old_stashed_inode = ctx->stashed_inode;
3462         old_stashed_ino = ctx->stashed_ino;
3463         qsort(inodes_to_process, *process_inode_count,
3464                       sizeof(struct process_inode_block), process_inode_cmp);
3465         clear_problem_context(&pctx);
3466         for (i=0; i < *process_inode_count; i++) {
3467                 pctx.inode = ctx->stashed_inode =
3468                         (struct ext2_inode *) &inodes_to_process[i].inode;
3469                 pctx.ino = ctx->stashed_ino = inodes_to_process[i].ino;
3470
3471 #if 0
3472                 printf("%u ", pctx.ino);
3473 #endif
3474                 sprintf(buf, _("reading indirect blocks of inode %u"),
3475                         pctx.ino);
3476                 ehandler_operation(buf);
3477                 check_blocks(ctx, &pctx, block_buf,
3478                              &inodes_to_process[i].ea_ibody_quota);
3479                 if (e2fsck_should_abort(ctx))
3480                         break;
3481         }
3482         ctx->stashed_inode = old_stashed_inode;
3483         ctx->stashed_ino = old_stashed_ino;
3484         *process_inode_count = 0;
3485 #if 0
3486         printf("end process inodes\n");
3487 #endif
3488         ehandler_operation(old_operation);
3489 }
3490
3491 static EXT2_QSORT_TYPE process_inode_cmp(const void *a, const void *b)
3492 {
3493         const struct process_inode_block *ib_a =
3494                 (const struct process_inode_block *) a;
3495         const struct process_inode_block *ib_b =
3496                 (const struct process_inode_block *) b;
3497         int     ret;
3498
3499         ret = (ib_a->inode.i_block[EXT2_IND_BLOCK] -
3500                ib_b->inode.i_block[EXT2_IND_BLOCK]);
3501         if (ret == 0)
3502                 /*
3503                  * We only call process_inodes() for non-extent
3504                  * inodes, so it's OK to pass NULL to
3505                  * ext2fs_file_acl_block() here.
3506                  */
3507                 ret = ext2fs_file_acl_block(0, ext2fs_const_inode(&ib_a->inode)) -
3508                         ext2fs_file_acl_block(0, ext2fs_const_inode(&ib_b->inode));
3509         if (ret == 0)
3510                 ret = ib_a->ino - ib_b->ino;
3511         return ret;
3512 }
3513
3514 /*
3515  * Mark an inode as being bad in some what
3516  */
3517 static void mark_inode_bad(e2fsck_t ctx, ext2_ino_t ino)
3518 {
3519         struct          problem_context pctx;
3520
3521         if (!ctx->inode_bad_map) {
3522                 clear_problem_context(&pctx);
3523
3524                 pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
3525                                 _("bad inode map"), EXT2FS_BMAP64_RBTREE,
3526                                 "inode_bad_map", &ctx->inode_bad_map);
3527                 if (pctx.errcode) {
3528                         pctx.num = 3;
3529                         fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
3530                         /* Should never get here */
3531                         ctx->flags |= E2F_FLAG_ABORT;
3532                         return;
3533                 }
3534         }
3535         ext2fs_mark_inode_bitmap2(ctx->inode_bad_map, ino);
3536 }
3537
3538 static void add_casefolded_dir(e2fsck_t ctx, ext2_ino_t ino)
3539 {
3540         struct          problem_context pctx;
3541
3542         if (!ctx->casefolded_dirs) {
3543                 pctx.errcode = ext2fs_u32_list_create(&ctx->casefolded_dirs, 0);
3544                 if (pctx.errcode)
3545                         goto error;
3546         }
3547         pctx.errcode = ext2fs_u32_list_add(ctx->casefolded_dirs, ino);
3548         if (pctx.errcode == 0)
3549                 return;
3550 error:
3551         fix_problem(ctx, PR_1_ALLOCATE_CASEFOLDED_DIRLIST, &pctx);
3552         /* Should never get here */
3553         ctx->flags |= E2F_FLAG_ABORT;
3554 }
3555
3556 /*
3557  * This procedure will allocate the inode "bb" (badblock) map table
3558  */
3559 static void alloc_bb_map(e2fsck_t ctx)
3560 {
3561         struct          problem_context pctx;
3562
3563         clear_problem_context(&pctx);
3564         pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
3565                         _("inode in bad block map"), EXT2FS_BMAP64_RBTREE,
3566                         "inode_bb_map", &ctx->inode_bb_map);
3567         if (pctx.errcode) {
3568                 pctx.num = 4;
3569                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
3570                 /* Should never get here */
3571                 ctx->flags |= E2F_FLAG_ABORT;
3572                 return;
3573         }
3574 }
3575
3576 /*
3577  * This procedure will allocate the inode imagic table
3578  */
3579 static void alloc_imagic_map(e2fsck_t ctx)
3580 {
3581         struct          problem_context pctx;
3582
3583         clear_problem_context(&pctx);
3584         pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
3585                         _("imagic inode map"), EXT2FS_BMAP64_RBTREE,
3586                         "inode_imagic_map", &ctx->inode_imagic_map);
3587         if (pctx.errcode) {
3588                 pctx.num = 5;
3589                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
3590                 /* Should never get here */
3591                 ctx->flags |= E2F_FLAG_ABORT;
3592                 return;
3593         }
3594 }
3595
3596 /*
3597  * Marks a block as in use, setting the dup_map if it's been set
3598  * already.  Called by process_block and process_bad_block.
3599  *
3600  * WARNING: Assumes checks have already been done to make sure block
3601  * is valid.  This is true in both process_block and process_bad_block.
3602  */
3603 static _INLINE_ void mark_block_used(e2fsck_t ctx, blk64_t block)
3604 {
3605         struct problem_context pctx;
3606         e2fsck_t global_ctx = ctx->global_ctx ? ctx->global_ctx : ctx;
3607
3608         clear_problem_context(&pctx);
3609
3610         if (is_blocks_used(ctx, block, 1)) {
3611                 if (ext2fs_has_feature_shared_blocks(ctx->fs->super) &&
3612                     !(ctx->options & E2F_OPT_UNSHARE_BLOCKS)) {
3613                         return;
3614                 }
3615                 ctx->flags |= E2F_FLAG_DUP_BLOCK;
3616                 e2fsck_pass1_block_map_w_lock(ctx);
3617                 ext2fs_fast_mark_block_bitmap2(global_ctx->block_dup_map, block);
3618                 e2fsck_pass1_block_map_w_unlock(ctx);
3619         } else {
3620                 ext2fs_fast_mark_block_bitmap2(ctx->block_found_map, block);
3621         }
3622 }
3623
3624 /*
3625  * When cluster size is greater than one block, it is caller's responsibility
3626  * to make sure block parameter starts at a cluster boundary.
3627  */
3628 static _INLINE_ void mark_blocks_used(e2fsck_t ctx, blk64_t block,
3629                                       unsigned int num)
3630 {
3631         if (!is_blocks_used(ctx, block, num)) {
3632                 ext2fs_mark_block_bitmap_range2(ctx->block_found_map, block, num);
3633         } else {
3634                 unsigned int i;
3635
3636                 for (i = 0; i < num; i += EXT2FS_CLUSTER_RATIO(ctx->fs))
3637                         mark_block_used(ctx, block + i);
3638         }
3639 }
3640
3641 static errcode_t _INLINE_ e2fsck_write_ext_attr3(e2fsck_t ctx, blk64_t block,
3642                                                  void *inbuf, ext2_ino_t inum)
3643 {
3644         errcode_t retval;
3645         ext2_filsys fs = ctx->fs;
3646
3647         e2fsck_pass1_fix_lock(ctx);
3648         retval = ext2fs_write_ext_attr3(fs, block, inbuf, inum);
3649         e2fsck_pass1_fix_unlock(ctx);
3650
3651         return retval;
3652 }
3653 /*
3654  * Adjust the extended attribute block's reference counts at the end
3655  * of pass 1, either by subtracting out references for EA blocks that
3656  * are still referenced in ctx->refcount, or by adding references for
3657  * EA blocks that had extra references as accounted for in
3658  * ctx->refcount_extra.
3659  */
3660 static void adjust_extattr_refcount(e2fsck_t ctx, ext2_refcount_t refcount,
3661                                     char *block_buf, int adjust_sign)
3662 {
3663         struct ext2_ext_attr_header     *header;
3664         struct problem_context          pctx;
3665         ext2_filsys                     fs = ctx->fs;
3666         blk64_t                         blk;
3667         __u32                           should_be;
3668         ea_value_t                      count;
3669
3670         clear_problem_context(&pctx);
3671
3672         ea_refcount_intr_begin(refcount);
3673         while (1) {
3674                 if ((blk = ea_refcount_intr_next(refcount, &count)) == 0)
3675                         break;
3676                 pctx.blk = blk;
3677                 pctx.errcode = ext2fs_read_ext_attr3(fs, blk, block_buf,
3678                                                      pctx.ino);
3679                 if (pctx.errcode) {
3680                         fix_problem(ctx, PR_1_EXTATTR_READ_ABORT, &pctx);
3681                         return;
3682                 }
3683                 header = (struct ext2_ext_attr_header *) block_buf;
3684                 pctx.blkcount = header->h_refcount;
3685                 should_be = header->h_refcount + adjust_sign * (int)count;
3686                 pctx.num = should_be;
3687                 if (fix_problem(ctx, PR_1_EXTATTR_REFCOUNT, &pctx)) {
3688                         header->h_refcount = should_be;
3689                         pctx.errcode = e2fsck_write_ext_attr3(ctx, blk,
3690                                                              block_buf,
3691                                                              pctx.ino);
3692                         if (pctx.errcode) {
3693                                 fix_problem(ctx, PR_1_EXTATTR_WRITE_ABORT,
3694                                             &pctx);
3695                                 continue;
3696                         }
3697                 }
3698         }
3699 }
3700
3701 /*
3702  * Handle processing the extended attribute blocks
3703  */
3704 static int check_ext_attr(e2fsck_t ctx, struct problem_context *pctx,
3705                            char *block_buf, struct ea_quota *ea_block_quota)
3706 {
3707         ext2_filsys fs = ctx->fs;
3708         ext2_ino_t      ino = pctx->ino;
3709         struct ext2_inode *inode = pctx->inode;
3710         blk64_t         blk;
3711         char *          end;
3712         struct ext2_ext_attr_header *header;
3713         struct ext2_ext_attr_entry *first, *entry;
3714         blk64_t         quota_blocks = EXT2FS_C2B(fs, 1);
3715         __u64           quota_inodes = 0;
3716         region_t        region = 0;
3717         int             failed_csum = 0;
3718
3719         ea_block_quota->blocks = 0;
3720         ea_block_quota->inodes = 0;
3721
3722         blk = ext2fs_file_acl_block(fs, inode);
3723         if (blk == 0)
3724                 return 0;
3725
3726         /*
3727          * If the Extended attribute flag isn't set, then a non-zero
3728          * file acl means that the inode is corrupted.
3729          *
3730          * Or if the extended attribute block is an invalid block,
3731          * then the inode is also corrupted.
3732          */
3733         if (!ext2fs_has_feature_xattr(fs->super) ||
3734             (blk < fs->super->s_first_data_block) ||
3735             (blk >= ext2fs_blocks_count(fs->super))) {
3736                 mark_inode_bad(ctx, ino);
3737                 return 0;
3738         }
3739
3740         /* If ea bitmap hasn't been allocated, create it */
3741         if (!ctx->block_ea_map) {
3742                 pctx->errcode = e2fsck_allocate_block_bitmap(fs,
3743                                         _("ext attr block map"),
3744                                         EXT2FS_BMAP64_RBTREE, "block_ea_map",
3745                                         &ctx->block_ea_map);
3746                 if (pctx->errcode) {
3747                         pctx->num = 2;
3748                         fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, pctx);
3749                         ctx->flags |= E2F_FLAG_ABORT;
3750                         return 0;
3751                 }
3752         }
3753
3754         /* Create the EA refcount structure if necessary */
3755         if (!ctx->refcount) {
3756                 pctx->errcode = ea_refcount_create(0,
3757                                         &ctx->refcount_orig);
3758                 if (pctx->errcode) {
3759                         pctx->num = 1;
3760                         fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
3761                         ctx->flags |= E2F_FLAG_ABORT;
3762                         return 0;
3763                 }
3764
3765                 pctx->errcode = ea_refcount_create(0, &ctx->refcount);
3766                 if (pctx->errcode) {
3767                         pctx->num = 1;
3768                         fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
3769                         ctx->flags |= E2F_FLAG_ABORT;
3770                         return 0;
3771                 }
3772         }
3773
3774 #if 0
3775         /* Debugging text */
3776         printf("Inode %u has EA block %u\n", ino, blk);
3777 #endif
3778
3779         /* Have we seen this EA block before? */
3780         if (ext2fs_fast_test_block_bitmap2(ctx->block_ea_map, blk)) {
3781                 ea_block_quota->blocks = EXT2FS_C2B(fs, 1);
3782                 ea_block_quota->inodes = 0;
3783
3784                 if (ctx->ea_block_quota_blocks) {
3785                         ea_refcount_fetch(ctx->ea_block_quota_blocks, blk,
3786                                           &quota_blocks);
3787                         if (quota_blocks)
3788                                 ea_block_quota->blocks = quota_blocks;
3789                 }
3790
3791                 if (ctx->ea_block_quota_inodes)
3792                         ea_refcount_fetch(ctx->ea_block_quota_inodes, blk,
3793                                           &ea_block_quota->inodes);
3794
3795                 if (ea_refcount_decrement(ctx->refcount, blk, 0) == 0)
3796                         return 1;
3797                 /* Ooops, this EA was referenced more than it stated */
3798                 if (!ctx->refcount_extra) {
3799                         pctx->errcode = ea_refcount_create(0,
3800                                            &ctx->refcount_extra);
3801                         if (pctx->errcode) {
3802                                 pctx->num = 2;
3803                                 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
3804                                 ctx->flags |= E2F_FLAG_ABORT;
3805                                 return 0;
3806                         }
3807                 }
3808                 ea_refcount_increment(ctx->refcount_extra, blk, 0);
3809                 return 1;
3810         }
3811
3812         /*
3813          * OK, we haven't seen this EA block yet.  So we need to
3814          * validate it
3815          */
3816         pctx->blk = blk;
3817         pctx->errcode = ext2fs_read_ext_attr3(fs, blk, block_buf, pctx->ino);
3818         if (pctx->errcode == EXT2_ET_EXT_ATTR_CSUM_INVALID) {
3819                 pctx->errcode = 0;
3820                 failed_csum = 1;
3821         } else if (pctx->errcode == EXT2_ET_BAD_EA_HEADER)
3822                 pctx->errcode = 0;
3823
3824         if (pctx->errcode &&
3825             fix_problem(ctx, PR_1_READ_EA_BLOCK, pctx)) {
3826                 pctx->errcode = 0;
3827                 goto clear_extattr;
3828         }
3829         header = (struct ext2_ext_attr_header *) block_buf;
3830         pctx->blk = ext2fs_file_acl_block(fs, inode);
3831         if (((ctx->ext_attr_ver == 1) &&
3832              (header->h_magic != EXT2_EXT_ATTR_MAGIC_v1)) ||
3833             ((ctx->ext_attr_ver == 2) &&
3834              (header->h_magic != EXT2_EXT_ATTR_MAGIC))) {
3835                 if (fix_problem(ctx, PR_1_BAD_EA_BLOCK, pctx))
3836                         goto clear_extattr;
3837         }
3838
3839         if (header->h_blocks != 1) {
3840                 if (fix_problem(ctx, PR_1_EA_MULTI_BLOCK, pctx))
3841                         goto clear_extattr;
3842         }
3843
3844         if (pctx->errcode && fix_problem(ctx, PR_1_READ_EA_BLOCK, pctx))
3845                 goto clear_extattr;
3846
3847         region = region_create(0, fs->blocksize);
3848         if (!region) {
3849                 fix_problem(ctx, PR_1_EA_ALLOC_REGION_ABORT, pctx);
3850                 ctx->flags |= E2F_FLAG_ABORT;
3851                 return 0;
3852         }
3853         if (region_allocate(region, 0, sizeof(struct ext2_ext_attr_header))) {
3854                 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
3855                         goto clear_extattr;
3856         }
3857
3858         first = (struct ext2_ext_attr_entry *)(header+1);
3859         end = block_buf + fs->blocksize;
3860         entry = first;
3861         while ((char *)entry < end && *(__u32 *)entry) {
3862                 __u32 hash;
3863
3864                 if (region_allocate(region, (char *)entry - (char *)header,
3865                                    EXT2_EXT_ATTR_LEN(entry->e_name_len))) {
3866                         if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
3867                                 goto clear_extattr;
3868                         break;
3869                 }
3870                 if ((ctx->ext_attr_ver == 1 &&
3871                      (entry->e_name_len == 0 || entry->e_name_index != 0)) ||
3872                     (ctx->ext_attr_ver == 2 &&
3873                      entry->e_name_index == 0)) {
3874                         if (fix_problem(ctx, PR_1_EA_BAD_NAME, pctx))
3875                                 goto clear_extattr;
3876                         break;
3877                 }
3878                 if (entry->e_value_inum == 0) {
3879                         if (entry->e_value_size > EXT2_XATTR_SIZE_MAX ||
3880                             (entry->e_value_offs + entry->e_value_size >
3881                              fs->blocksize)) {
3882                                 if (fix_problem(ctx, PR_1_EA_BAD_VALUE, pctx))
3883                                         goto clear_extattr;
3884                                 break;
3885                         }
3886                         if (entry->e_value_size &&
3887                             region_allocate(region, entry->e_value_offs,
3888                                             EXT2_EXT_ATTR_SIZE(entry->e_value_size))) {
3889                                 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION,
3890                                                 pctx))
3891                                         goto clear_extattr;
3892                         }
3893
3894                         hash = ext2fs_ext_attr_hash_entry(entry, block_buf +
3895                                                           entry->e_value_offs);
3896                         if (entry->e_hash != hash)
3897                                 hash = ext2fs_ext_attr_hash_entry_signed(entry,
3898                                         block_buf + entry->e_value_offs);
3899
3900                         if (entry->e_hash != hash) {
3901                                 pctx->num = entry->e_hash;
3902                                 if (fix_problem(ctx, PR_1_ATTR_HASH, pctx))
3903                                         goto clear_extattr;
3904                                 entry->e_hash = hash;
3905                         }
3906                 } else {
3907                         problem_t problem;
3908                         blk64_t entry_quota_blocks;
3909
3910                         problem = check_large_ea_inode(ctx, entry, pctx,
3911                                                        &entry_quota_blocks);
3912                         if (problem && fix_problem(ctx, problem, pctx))
3913                                 goto clear_extattr;
3914
3915                         quota_blocks += entry_quota_blocks;
3916                         quota_inodes++;
3917                 }
3918
3919                 entry = EXT2_EXT_ATTR_NEXT(entry);
3920         }
3921         if (region_allocate(region, (char *)entry - (char *)header, 4)) {
3922                 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
3923                         goto clear_extattr;
3924         }
3925         region_free(region);
3926
3927         /*
3928          * We only get here if there was no other errors that were fixed.
3929          * If there was a checksum fail, ask to correct it.
3930          */
3931         if (failed_csum &&
3932             fix_problem(ctx, PR_1_EA_BLOCK_ONLY_CSUM_INVALID, pctx)) {
3933                 pctx->errcode = e2fsck_write_ext_attr3(ctx, blk, block_buf,
3934                                                        pctx->ino);
3935                 if (pctx->errcode)
3936                         return 0;
3937         }
3938
3939         if (quota_blocks != EXT2FS_C2B(fs, 1U)) {
3940                 if (!ctx->ea_block_quota_blocks) {
3941                         pctx->errcode = ea_refcount_create(0,
3942                                                 &ctx->ea_block_quota_blocks);
3943                         if (pctx->errcode) {
3944                                 pctx->num = 3;
3945                                 goto refcount_fail;
3946                         }
3947                 }
3948                 ea_refcount_store(ctx->ea_block_quota_blocks, blk,
3949                                   quota_blocks);
3950         }
3951
3952         if (quota_inodes) {
3953                 if (!ctx->ea_block_quota_inodes) {
3954                         pctx->errcode = ea_refcount_create(0,
3955                                                 &ctx->ea_block_quota_inodes);
3956                         if (pctx->errcode) {
3957                                 pctx->num = 4;
3958 refcount_fail:
3959                                 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
3960                                 ctx->flags |= E2F_FLAG_ABORT;
3961                                 return 0;
3962                         }
3963                 }
3964
3965                 ea_refcount_store(ctx->ea_block_quota_inodes, blk,
3966                                   quota_inodes);
3967         }
3968         ea_block_quota->blocks = quota_blocks;
3969         ea_block_quota->inodes = quota_inodes;
3970
3971         inc_ea_inode_refs(ctx, pctx, first, end);
3972         ea_refcount_store(ctx->refcount, blk, header->h_refcount - 1);
3973         ea_refcount_store(ctx->refcount_orig, blk, header->h_refcount);
3974         /**
3975          * It might be racy that this block has been merged in the
3976          * global found map.
3977          */
3978         if (!is_blocks_used(ctx, blk, 1))
3979                 ext2fs_fast_mark_block_bitmap2(ctx->block_found_map, blk);
3980         ext2fs_fast_mark_block_bitmap2(ctx->block_ea_map, blk);
3981         return 1;
3982
3983 clear_extattr:
3984         if (region)
3985                 region_free(region);
3986         ext2fs_file_acl_block_set(fs, inode, 0);
3987         e2fsck_write_inode(ctx, ino, inode, "check_ext_attr");
3988         return 0;
3989 }
3990
3991 /* Returns 1 if bad htree, 0 if OK */
3992 static int handle_htree(e2fsck_t ctx, struct problem_context *pctx,
3993                         ext2_ino_t ino, struct ext2_inode *inode,
3994                         char *block_buf)
3995 {
3996         struct ext2_dx_root_info        *root;
3997         ext2_filsys                     fs = ctx->fs;
3998         errcode_t                       retval;
3999         blk64_t                         blk;
4000
4001         if ((!LINUX_S_ISDIR(inode->i_mode) &&
4002              fix_problem(ctx, PR_1_HTREE_NODIR, pctx)) ||
4003             (!ext2fs_has_feature_dir_index(fs->super) &&
4004              fix_problem(ctx, PR_1_HTREE_SET, pctx)))
4005                 return 1;
4006
4007         pctx->errcode = ext2fs_bmap2(fs, ino, inode, 0, 0, 0, 0, &blk);
4008
4009         if ((pctx->errcode) ||
4010             (blk == 0) ||
4011             (blk < fs->super->s_first_data_block) ||
4012             (blk >= ext2fs_blocks_count(fs->super))) {
4013                 if (fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
4014                         return 1;
4015                 else
4016                         return 0;
4017         }
4018
4019         retval = io_channel_read_blk64(fs->io, blk, 1, block_buf);
4020         if (retval && fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
4021                 return 1;
4022
4023         /* XXX should check that beginning matches a directory */
4024         root = (struct ext2_dx_root_info *) (block_buf + 24);
4025
4026         if ((root->reserved_zero || root->info_length < 8) &&
4027             fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
4028                 return 1;
4029
4030         pctx->num = root->hash_version;
4031         if ((root->hash_version != EXT2_HASH_LEGACY) &&
4032             (root->hash_version != EXT2_HASH_HALF_MD4) &&
4033             (root->hash_version != EXT2_HASH_TEA) &&
4034             (root->hash_version != EXT2_HASH_SIPHASH) &&
4035             fix_problem(ctx, PR_1_HTREE_HASHV, pctx))
4036                 return 1;
4037
4038         if (ext4_hash_in_dirent(inode)) {
4039                 if (root->hash_version != EXT2_HASH_SIPHASH &&
4040                     fix_problem(ctx, PR_1_HTREE_NEEDS_SIPHASH, pctx))
4041                         return 1;
4042         } else {
4043                 if (root->hash_version == EXT2_HASH_SIPHASH &&
4044                    fix_problem(ctx, PR_1_HTREE_CANNOT_SIPHASH, pctx))
4045                         return 1;
4046         }
4047
4048         if ((root->unused_flags & EXT2_HASH_FLAG_INCOMPAT) &&
4049             fix_problem(ctx, PR_1_HTREE_INCOMPAT, pctx))
4050                 return 1;
4051
4052         pctx->num = root->indirect_levels;
4053         /* if htree level is clearly too high, consider it to be broken */
4054         if (root->indirect_levels > EXT4_HTREE_LEVEL &&
4055             fix_problem(ctx, PR_1_HTREE_DEPTH, pctx))
4056                 return 1;
4057
4058         /* if level is only maybe too high, LARGE_DIR feature could be unset */
4059         if (root->indirect_levels > ext2_dir_htree_level(fs) &&
4060             !ext2fs_has_feature_largedir(fs->super)) {
4061                 int blockbits = EXT2_BLOCK_SIZE_BITS(fs->super) + 10;
4062                 unsigned idx_pb = 1 << (blockbits - 3);
4063
4064                 /* compare inode size/blocks vs. max-sized 2-level htree */
4065                 if (EXT2_I_SIZE(pctx->inode) <
4066                     (idx_pb - 1) * (idx_pb - 2) << blockbits &&
4067                     pctx->inode->i_blocks <
4068                     (idx_pb - 1) * (idx_pb - 2) << (blockbits - 9) &&
4069                     fix_problem(ctx, PR_1_HTREE_DEPTH, pctx))
4070                         return 1;
4071         }
4072
4073         if (root->indirect_levels > EXT4_HTREE_LEVEL_COMPAT ||
4074             ext2fs_needs_large_file_feature(EXT2_I_SIZE(inode)))
4075                 ctx->large_dirs++;
4076
4077         return 0;
4078 }
4079
4080 void e2fsck_clear_inode(e2fsck_t ctx, ext2_ino_t ino,
4081                         struct ext2_inode *inode, int restart_flag,
4082                         const char *source)
4083 {
4084         inode->i_flags = 0;
4085         inode->i_links_count = 0;
4086         ext2fs_icount_store(ctx->inode_link_info, ino, 0);
4087         inode->i_dtime = ctx->now;
4088
4089         /*
4090          * If a special inode has such rotten block mappings that we
4091          * want to clear the whole inode, be sure to actually zap
4092          * the block maps because i_links_count isn't checked for
4093          * special inodes, and we'll end up right back here the next
4094          * time we run fsck.
4095          */
4096         if (ino < EXT2_FIRST_INODE(ctx->fs->super))
4097                 memset(inode->i_block, 0, sizeof(inode->i_block));
4098
4099         ext2fs_unmark_inode_bitmap2(ctx->inode_dir_map, ino);
4100         ext2fs_unmark_inode_bitmap2(ctx->inode_used_map, ino);
4101         if (ctx->inode_reg_map)
4102                 ext2fs_unmark_inode_bitmap2(ctx->inode_reg_map, ino);
4103         if (ctx->inode_bad_map)
4104                 ext2fs_unmark_inode_bitmap2(ctx->inode_bad_map, ino);
4105
4106         /*
4107          * If the inode was partially accounted for before processing
4108          * was aborted, we need to restart the pass 1 scan.
4109          */
4110         ctx->flags |= restart_flag;
4111
4112         if (ino == EXT2_BAD_INO)
4113                 memset(inode, 0, sizeof(struct ext2_inode));
4114
4115         e2fsck_write_inode(ctx, ino, inode, source);
4116 }
4117
4118 /*
4119  * Use the multiple-blocks reclamation code to fix alignment problems in
4120  * a bigalloc filesystem.  We want a logical cluster to map to *only* one
4121  * physical cluster, and we want the block offsets within that cluster to
4122  * line up.
4123  */
4124 static int has_unaligned_cluster_map(e2fsck_t ctx,
4125                                      blk64_t last_pblk, blk64_t last_lblk,
4126                                      blk64_t pblk, blk64_t lblk)
4127 {
4128         blk64_t cluster_mask;
4129
4130         if (!ctx->fs->cluster_ratio_bits)
4131                 return 0;
4132         cluster_mask = EXT2FS_CLUSTER_MASK(ctx->fs);
4133
4134         /*
4135          * If the block in the logical cluster doesn't align with the block in
4136          * the physical cluster...
4137          */
4138         if ((lblk & cluster_mask) != (pblk & cluster_mask))
4139                 return 1;
4140
4141         /*
4142          * If we cross a physical cluster boundary within a logical cluster...
4143          */
4144         if (last_pblk && (lblk & cluster_mask) != 0 &&
4145             EXT2FS_B2C(ctx->fs, lblk) == EXT2FS_B2C(ctx->fs, last_lblk) &&
4146             EXT2FS_B2C(ctx->fs, pblk) != EXT2FS_B2C(ctx->fs, last_pblk))
4147                 return 1;
4148
4149         return 0;
4150 }
4151
4152 static void scan_extent_node(e2fsck_t ctx, struct problem_context *pctx,
4153                              struct process_block_struct *pb,
4154                              blk64_t start_block, blk64_t end_block,
4155                              blk64_t eof_block,
4156                              ext2_extent_handle_t ehandle,
4157                              int try_repairs)
4158 {
4159         struct ext2fs_extent    extent;
4160         blk64_t                 blk, last_lblk;
4161         unsigned int            i, n;
4162         int                     is_dir, is_leaf;
4163         problem_t               problem;
4164         struct ext2_extent_info info;
4165         int                     failed_csum = 0;
4166
4167         if (pctx->errcode == EXT2_ET_EXTENT_CSUM_INVALID)
4168                 failed_csum = 1;
4169
4170         pctx->errcode = ext2fs_extent_get_info(ehandle, &info);
4171         if (pctx->errcode)
4172                 return;
4173         if (!(ctx->options & E2F_OPT_FIXES_ONLY) &&
4174             !pb->eti.force_rebuild &&
4175             info.curr_level < MAX_EXTENT_DEPTH_COUNT) {
4176                 struct extent_tree_level *etl;
4177
4178                 etl = pb->eti.ext_info + info.curr_level;
4179                 etl->num_extents += info.num_entries;
4180                 etl->max_extents += info.max_entries;
4181                 /*
4182                  * Implementation wart: Splitting extent blocks when appending
4183                  * will leave the old block with one free entry.  Therefore
4184                  * unless the node is totally full, pretend that a non-root
4185                  * extent block can hold one fewer entry than it actually does,
4186                  * so that we don't repeatedly rebuild the extent tree.
4187                  */
4188                 if (info.curr_level && info.num_entries < info.max_entries)
4189                         etl->max_extents--;
4190         }
4191
4192         pctx->errcode = ext2fs_extent_get(ehandle, EXT2_EXTENT_FIRST_SIB,
4193                                           &extent);
4194         while ((pctx->errcode == 0 ||
4195                 pctx->errcode == EXT2_ET_EXTENT_CSUM_INVALID) &&
4196                info.num_entries-- > 0) {
4197                 is_leaf = extent.e_flags & EXT2_EXTENT_FLAGS_LEAF;
4198                 is_dir = LINUX_S_ISDIR(pctx->inode->i_mode);
4199                 last_lblk = extent.e_lblk + extent.e_len - 1;
4200
4201                 problem = 0;
4202                 pctx->blk = extent.e_pblk;
4203                 pctx->blk2 = extent.e_lblk;
4204                 pctx->num = extent.e_len;
4205                 pctx->blkcount = extent.e_lblk + extent.e_len;
4206
4207                 if (extent.e_pblk == 0 ||
4208                     extent.e_pblk < ctx->fs->super->s_first_data_block ||
4209                     extent.e_pblk >= ext2fs_blocks_count(ctx->fs->super))
4210                         problem = PR_1_EXTENT_BAD_START_BLK;
4211                 else if (extent.e_lblk < start_block)
4212                         problem = PR_1_OUT_OF_ORDER_EXTENTS;
4213                 else if ((end_block && last_lblk > end_block) &&
4214                          !(last_lblk > eof_block &&
4215                            ((extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT) ||
4216                             (pctx->inode->i_flags & EXT4_VERITY_FL))))
4217                         problem = PR_1_EXTENT_END_OUT_OF_BOUNDS;
4218                 else if (is_leaf && extent.e_len == 0)
4219                         problem = PR_1_EXTENT_LENGTH_ZERO;
4220                 else if (is_leaf &&
4221                          (extent.e_pblk + extent.e_len) >
4222                          ext2fs_blocks_count(ctx->fs->super))
4223                         problem = PR_1_EXTENT_ENDS_BEYOND;
4224                 else if (is_leaf && is_dir && !pctx->inode->i_size_high &&
4225                          !ext2fs_has_feature_largedir(ctx->fs->super) &&
4226                          ((extent.e_lblk + extent.e_len) >
4227                           (1U << (21 - ctx->fs->super->s_log_block_size))))
4228                         problem = PR_1_TOOBIG_DIR;
4229
4230                 if (is_leaf && problem == 0 && extent.e_len > 0) {
4231 #if 0
4232                         printf("extent_region(ino=%u, expect=%llu, "
4233                                "lblk=%llu, len=%u)\n", pb->ino,
4234                                (unsigned long long) pb->next_lblock,
4235                                (unsigned long long) extent.e_lblk,
4236                                extent.e_len);
4237 #endif
4238                         if (extent.e_lblk < pb->next_lblock)
4239                                 problem = PR_1_EXTENT_COLLISION;
4240                         else if (extent.e_lblk + extent.e_len > pb->next_lblock)
4241                                 pb->next_lblock = extent.e_lblk + extent.e_len;
4242                 }
4243
4244                 /*
4245                  * Uninitialized blocks in a directory?  Clear the flag and
4246                  * we'll interpret the blocks later.
4247                  */
4248                 if (try_repairs && is_dir && problem == 0 &&
4249                     (extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT) &&
4250                     fix_problem(ctx, PR_1_UNINIT_DBLOCK, pctx)) {
4251                         e2fsck_pass1_fix_lock(ctx);
4252                         extent.e_flags &= ~EXT2_EXTENT_FLAGS_UNINIT;
4253                         pb->inode_modified = 1;
4254                         pctx->errcode = ext2fs_extent_replace(ehandle, 0,
4255                                                               &extent);
4256                         e2fsck_pass1_fix_unlock(ctx);
4257                         if (pctx->errcode)
4258                                 return;
4259                         failed_csum = 0;
4260                 }
4261 #ifdef CONFIG_DEVELOPER_FEATURES
4262                 if (try_repairs && !is_dir && problem == 0 &&
4263                     (ctx->options & E2F_OPT_CLEAR_UNINIT) &&
4264                     (extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT) &&
4265                     fix_problem(ctx, PR_1_CLEAR_UNINIT_EXTENT, pctx)) {
4266                         extent.e_flags &= ~EXT2_EXTENT_FLAGS_UNINIT;
4267                         pb->inode_modified = 1;
4268                         pctx->errcode = ext2fs_extent_replace(ehandle, 0,
4269                                                               &extent);
4270                         if (pctx->errcode)
4271                                 return;
4272                         failed_csum = 0;
4273                 }
4274 #endif
4275                 if (try_repairs && problem) {
4276 report_problem:
4277                         if (fix_problem(ctx, problem, pctx)) {
4278                                 if (ctx->invalid_bitmaps) {
4279                                         /*
4280                                          * If fsck knows the bitmaps are bad,
4281                                          * skip to the next extent and
4282                                          * try to clear this extent again
4283                                          * after fixing the bitmaps, by
4284                                          * restarting fsck.
4285                                          */
4286                                         pctx->errcode = ext2fs_extent_get(
4287                                                           ehandle,
4288                                                           EXT2_EXTENT_NEXT_SIB,
4289                                                           &extent);
4290                                         ctx->flags |= E2F_FLAG_RESTART_LATER;
4291                                         if (pctx->errcode ==
4292                                                     EXT2_ET_NO_CURRENT_NODE) {
4293                                                 pctx->errcode = 0;
4294                                                 break;
4295                                         }
4296                                         continue;
4297                                 }
4298                                 e2fsck_pass1_fix_lock(ctx);
4299                                 e2fsck_read_bitmaps(ctx);
4300                                 pb->inode_modified = 1;
4301                                 pctx->errcode =
4302                                         ext2fs_extent_delete(ehandle, 0);
4303                                 e2fsck_pass1_fix_unlock(ctx);
4304                                 if (pctx->errcode) {
4305                                         pctx->str = "ext2fs_extent_delete";
4306                                         return;
4307                                 }
4308                                 e2fsck_pass1_fix_lock(ctx);
4309                                 pctx->errcode = ext2fs_extent_fix_parents(ehandle);
4310                                 e2fsck_pass1_fix_unlock(ctx);
4311                                 if (pctx->errcode &&
4312                                     pctx->errcode != EXT2_ET_NO_CURRENT_NODE) {
4313                                         pctx->str = "ext2fs_extent_fix_parents";
4314                                         return;
4315                                 }
4316                                 pctx->errcode = ext2fs_extent_get(ehandle,
4317                                                                   EXT2_EXTENT_CURRENT,
4318                                                                   &extent);
4319                                 if (pctx->errcode == EXT2_ET_NO_CURRENT_NODE) {
4320                                         pctx->errcode = 0;
4321                                         break;
4322                                 }
4323                                 failed_csum = 0;
4324                                 continue;
4325                         }
4326                         goto next;
4327                 }
4328
4329                 if (!is_leaf) {
4330                         blk64_t lblk = extent.e_lblk;
4331                         int next_try_repairs = 1;
4332
4333                         blk = extent.e_pblk;
4334
4335                         /*
4336                          * If this lower extent block collides with critical
4337                          * metadata, don't try to repair the damage.  Pass 1b
4338                          * will reallocate the block; then we can try again.
4339                          */
4340                         if (pb->ino != EXT2_RESIZE_INO &&
4341                             extent.e_pblk < ctx->fs->super->s_blocks_count &&
4342                             ext2fs_test_block_bitmap2(ctx->block_metadata_map,
4343                                                       extent.e_pblk)) {
4344                                 next_try_repairs = 0;
4345                                 pctx->blk = blk;
4346                                 fix_problem(ctx,
4347                                             PR_1_CRITICAL_METADATA_COLLISION,
4348                                             pctx);
4349                                 if ((ctx->options & E2F_OPT_NO) == 0)
4350                                         ctx->flags |= E2F_FLAG_RESTART_LATER;
4351                         }
4352                         pctx->errcode = ext2fs_extent_get(ehandle,
4353                                                   EXT2_EXTENT_DOWN, &extent);
4354                         if (pctx->errcode &&
4355                             pctx->errcode != EXT2_ET_EXTENT_CSUM_INVALID) {
4356                                 pctx->str = "EXT2_EXTENT_DOWN";
4357                                 problem = PR_1_EXTENT_HEADER_INVALID;
4358                                 if (!next_try_repairs)
4359                                         return;
4360                                 if (pctx->errcode == EXT2_ET_EXTENT_HEADER_BAD)
4361                                         goto report_problem;
4362                                 return;
4363                         }
4364                         /* The next extent should match this index's logical start */
4365                         if (extent.e_lblk != lblk) {
4366                                 struct ext2_extent_info e_info;
4367
4368                                 pctx->errcode = ext2fs_extent_get_info(ehandle,
4369                                                                        &e_info);
4370                                 if (pctx->errcode) {
4371                                         pctx->str = "ext2fs_extent_get_info";
4372                                         return;
4373                                 }
4374                                 pctx->blk = lblk;
4375                                 pctx->blk2 = extent.e_lblk;
4376                                 pctx->num = e_info.curr_level - 1;
4377                                 problem = PR_1_EXTENT_INDEX_START_INVALID;
4378                                 if (fix_problem(ctx, problem, pctx)) {
4379                                         e2fsck_pass1_fix_lock(ctx);
4380                                         pb->inode_modified = 1;
4381                                         pctx->errcode =
4382                                                 ext2fs_extent_fix_parents(ehandle);
4383                                         e2fsck_pass1_fix_unlock(ctx);
4384                                         if (pctx->errcode) {
4385                                                 pctx->str = "ext2fs_extent_fix_parents";
4386                                                 return;
4387                                         }
4388                                 }
4389                         }
4390                         scan_extent_node(ctx, pctx, pb, extent.e_lblk,
4391                                          last_lblk, eof_block, ehandle,
4392                                          next_try_repairs);
4393                         if (pctx->errcode)
4394                                 return;
4395                         pctx->errcode = ext2fs_extent_get(ehandle,
4396                                                   EXT2_EXTENT_UP, &extent);
4397                         if (pctx->errcode) {
4398                                 pctx->str = "EXT2_EXTENT_UP";
4399                                 return;
4400                         }
4401                         mark_block_used(ctx, blk);
4402                         pb->num_blocks++;
4403                         goto next;
4404                 }
4405
4406                 if ((pb->previous_block != 0) &&
4407                     (pb->previous_block+1 != extent.e_pblk)) {
4408                         if (ctx->options & E2F_OPT_FRAGCHECK) {
4409                                 char type = '?';
4410
4411                                 if (pb->is_dir)
4412                                         type = 'd';
4413                                 else if (pb->is_reg)
4414                                         type = 'f';
4415
4416                                 printf(("%6lu(%c): expecting %6lu "
4417                                         "actual extent "
4418                                         "phys %6lu log %lu len %lu\n"),
4419                                        (unsigned long) pctx->ino, type,
4420                                        (unsigned long) pb->previous_block+1,
4421                                        (unsigned long) extent.e_pblk,
4422                                        (unsigned long) extent.e_lblk,
4423                                        (unsigned long) extent.e_len);
4424                         }
4425                         pb->fragmented = 1;
4426                 }
4427                 /*
4428                  * If we notice a gap in the logical block mappings of an
4429                  * extent-mapped directory, offer to close the hole by
4430                  * moving the logical block down, otherwise we'll go mad in
4431                  * pass 3 allocating empty directory blocks to fill the hole.
4432                  */
4433                 if (try_repairs && is_dir &&
4434                     pb->last_block + 1 < extent.e_lblk) {
4435                         blk64_t new_lblk;
4436
4437                         new_lblk = pb->last_block + 1;
4438                         if (EXT2FS_CLUSTER_RATIO(ctx->fs) > 1)
4439                                 new_lblk = ((new_lblk +
4440                                              EXT2FS_CLUSTER_RATIO(ctx->fs) - 1) &
4441                                             ~EXT2FS_CLUSTER_MASK(ctx->fs)) |
4442                                            (extent.e_pblk &
4443                                             EXT2FS_CLUSTER_MASK(ctx->fs));
4444                         pctx->blk = extent.e_lblk;
4445                         pctx->blk2 = new_lblk;
4446                         if (fix_problem(ctx, PR_1_COLLAPSE_DBLOCK, pctx)) {
4447                                 e2fsck_pass1_fix_lock(ctx);
4448                                 extent.e_lblk = new_lblk;
4449                                 pb->inode_modified = 1;
4450                                 pctx->errcode = ext2fs_extent_replace(ehandle,
4451                                                                 0, &extent);
4452                                 e2fsck_pass1_fix_unlock(ctx);
4453                                 if (pctx->errcode) {
4454                                         pctx->errcode = 0;
4455                                         goto alloc_later;
4456                                 }
4457                                 e2fsck_pass1_fix_lock(ctx);
4458                                 pctx->errcode = ext2fs_extent_fix_parents(ehandle);
4459                                 e2fsck_pass1_fix_unlock(ctx);
4460                                 if (pctx->errcode)
4461                                         goto failed_add_dir_block;
4462                                 pctx->errcode = ext2fs_extent_goto(ehandle,
4463                                                                 extent.e_lblk);
4464                                 if (pctx->errcode)
4465                                         goto failed_add_dir_block;
4466                                 last_lblk = extent.e_lblk + extent.e_len - 1;
4467                                 failed_csum = 0;
4468                         }
4469                 }
4470 alloc_later:
4471                 if (is_dir) {
4472                         while (++pb->last_db_block <
4473                                (e2_blkcnt_t) extent.e_lblk) {
4474                                 pctx->errcode = ext2fs_add_dir_block2(
4475                                                         ctx->fs->dblist,
4476                                                         pb->ino, 0,
4477                                                         pb->last_db_block);
4478                                 if (pctx->errcode) {
4479                                         pctx->blk = 0;
4480                                         pctx->num = pb->last_db_block;
4481                                         goto failed_add_dir_block;
4482                                 }
4483                         }
4484
4485                         for (i = 0; i < extent.e_len; i++) {
4486                                 pctx->errcode = ext2fs_add_dir_block2(
4487                                                         ctx->fs->dblist,
4488                                                         pctx->ino,
4489                                                         extent.e_pblk + i,
4490                                                         extent.e_lblk + i);
4491                                 if (pctx->errcode) {
4492                                         pctx->blk = extent.e_pblk + i;
4493                                         pctx->num = extent.e_lblk + i;
4494                                 failed_add_dir_block:
4495                                         fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
4496                                         /* Should never get here */
4497                                         ctx->flags |= E2F_FLAG_ABORT;
4498                                         return;
4499                                 }
4500                         }
4501                         if (extent.e_len > 0)
4502                                 pb->last_db_block = extent.e_lblk + extent.e_len - 1;
4503                 }
4504                 if (has_unaligned_cluster_map(ctx, pb->previous_block,
4505                                               pb->last_block,
4506                                               extent.e_pblk,
4507                                               extent.e_lblk)) {
4508                         for (i = 0; i < extent.e_len; i++) {
4509                                 pctx->blk = extent.e_lblk + i;
4510                                 pctx->blk2 = extent.e_pblk + i;
4511                                 fix_problem(ctx, PR_1_MISALIGNED_CLUSTER, pctx);
4512                                 mark_block_used(ctx, extent.e_pblk + i);
4513                                 mark_block_used(ctx, extent.e_pblk + i);
4514                         }
4515                 }
4516
4517                 /*
4518                  * Check whether first cluster got marked in previous iteration.
4519                  */
4520                 if (ctx->fs->cluster_ratio_bits &&
4521                     pb->previous_block &&
4522                     (EXT2FS_B2C(ctx->fs, extent.e_pblk) ==
4523                      EXT2FS_B2C(ctx->fs, pb->previous_block)))
4524                         /* Set blk to the beginning of next cluster. */
4525                         blk = EXT2FS_C2B(
4526                                 ctx->fs,
4527                                 EXT2FS_B2C(ctx->fs, extent.e_pblk) + 1);
4528                 else
4529                         /* Set blk to the beginning of current cluster. */
4530                         blk = EXT2FS_C2B(ctx->fs,
4531                                          EXT2FS_B2C(ctx->fs, extent.e_pblk));
4532
4533                 if (blk < extent.e_pblk + extent.e_len) {
4534                         mark_blocks_used(ctx, blk,
4535                                          extent.e_pblk + extent.e_len - blk);
4536                         n = DIV_ROUND_UP(extent.e_pblk + extent.e_len - blk,
4537                                          EXT2FS_CLUSTER_RATIO(ctx->fs));
4538                         pb->num_blocks += n;
4539                 }
4540                 pb->last_block = extent.e_lblk + extent.e_len - 1;
4541                 pb->previous_block = extent.e_pblk + extent.e_len - 1;
4542                 start_block = pb->last_block = last_lblk;
4543                 if (is_leaf && !is_dir &&
4544                     !(extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT))
4545                         pb->last_init_lblock = last_lblk;
4546         next:
4547                 pctx->errcode = ext2fs_extent_get(ehandle,
4548                                                   EXT2_EXTENT_NEXT_SIB,
4549                                                   &extent);
4550         }
4551
4552         /* Failed csum but passes checks?  Ask to fix checksum. */
4553         if (failed_csum &&
4554             fix_problem(ctx, PR_1_EXTENT_ONLY_CSUM_INVALID, pctx)) {
4555                 e2fsck_pass1_fix_lock(ctx);
4556                 pb->inode_modified = 1;
4557                 pctx->errcode = ext2fs_extent_replace(ehandle, 0, &extent);
4558                 e2fsck_pass1_fix_unlock(ctx);
4559                 if (pctx->errcode)
4560                         return;
4561         }
4562
4563         if (pctx->errcode == EXT2_ET_EXTENT_NO_NEXT)
4564                 pctx->errcode = 0;
4565 }
4566
4567 static void check_blocks_extents(e2fsck_t ctx, struct problem_context *pctx,
4568                                  struct process_block_struct *pb)
4569 {
4570         struct ext2_extent_info info;
4571         struct ext2_inode       *inode = pctx->inode;
4572         ext2_extent_handle_t    ehandle;
4573         ext2_filsys             fs = ctx->fs;
4574         ext2_ino_t              ino = pctx->ino;
4575         errcode_t               retval;
4576         blk64_t                 eof_lblk;
4577         struct ext3_extent_header       *eh;
4578
4579         /* Check for a proper extent header... */
4580         eh = (struct ext3_extent_header *) &inode->i_block[0];
4581         retval = ext2fs_extent_header_verify(eh, sizeof(inode->i_block));
4582         if (retval) {
4583                 if (fix_problem(ctx, PR_1_MISSING_EXTENT_HEADER, pctx))
4584                         e2fsck_clear_inode(ctx, ino, inode, 0,
4585                                            "check_blocks_extents");
4586                 pctx->errcode = 0;
4587                 return;
4588         }
4589
4590         /* ...since this function doesn't fail if i_block is zeroed. */
4591         pctx->errcode = ext2fs_extent_open2(fs, ino, inode, &ehandle);
4592         if (pctx->errcode) {
4593                 if (fix_problem(ctx, PR_1_READ_EXTENT, pctx))
4594                         e2fsck_clear_inode(ctx, ino, inode, 0,
4595                                            "check_blocks_extents");
4596                 pctx->errcode = 0;
4597                 return;
4598         }
4599
4600         retval = ext2fs_extent_get_info(ehandle, &info);
4601         if (retval == 0) {
4602                 int max_depth = info.max_depth;
4603
4604                 if (max_depth >= MAX_EXTENT_DEPTH_COUNT)
4605                         max_depth = MAX_EXTENT_DEPTH_COUNT-1;
4606                 ctx->extent_depth_count[max_depth]++;
4607         }
4608
4609         /* Check maximum extent depth */
4610         pctx->blk = info.max_depth;
4611         pctx->blk2 = ext2fs_max_extent_depth(ehandle);
4612         if (pctx->blk2 < pctx->blk &&
4613             fix_problem(ctx, PR_1_EXTENT_BAD_MAX_DEPTH, pctx))
4614                 pb->eti.force_rebuild = 1;
4615
4616         /* Can we collect extent tree level stats? */
4617         pctx->blk = MAX_EXTENT_DEPTH_COUNT;
4618         if (pctx->blk2 > pctx->blk)
4619                 fix_problem(ctx, PR_1E_MAX_EXTENT_TREE_DEPTH, pctx);
4620         memset(pb->eti.ext_info, 0, sizeof(pb->eti.ext_info));
4621         pb->eti.ino = pb->ino;
4622
4623         pb->next_lblock = 0;
4624
4625         eof_lblk = ((EXT2_I_SIZE(inode) + fs->blocksize - 1) >>
4626                 EXT2_BLOCK_SIZE_BITS(fs->super)) - 1;
4627         scan_extent_node(ctx, pctx, pb, 0, 0, eof_lblk, ehandle, 1);
4628         if (pctx->errcode &&
4629             fix_problem(ctx, PR_1_EXTENT_ITERATE_FAILURE, pctx)) {
4630                 pb->num_blocks = 0;
4631                 inode->i_blocks = 0;
4632                 e2fsck_clear_inode(ctx, ino, inode, E2F_FLAG_RESTART,
4633                                    "check_blocks_extents");
4634                 pctx->errcode = 0;
4635         }
4636         ext2fs_extent_free(ehandle);
4637
4638         /* Rebuild unless it's a dir and we're rehashing it */
4639         if (LINUX_S_ISDIR(inode->i_mode) &&
4640             e2fsck_dir_will_be_rehashed(ctx, ino))
4641                 return;
4642
4643         if (ctx->options & E2F_OPT_CONVERT_BMAP)
4644                 e2fsck_rebuild_extents_later(ctx, ino);
4645         else
4646                 e2fsck_should_rebuild_extents(ctx, pctx, &pb->eti, &info);
4647 }
4648
4649 /*
4650  * In fact we don't need to check blocks for an inode with inline data
4651  * because this inode doesn't have any blocks.  In this function all
4652  * we need to do is add this inode into dblist when it is a directory.
4653  */
4654 static void check_blocks_inline_data(e2fsck_t ctx, struct problem_context *pctx,
4655                                      struct process_block_struct *pb)
4656 {
4657         int     flags;
4658         size_t  inline_data_size = 0;
4659
4660         if (!pb->is_dir) {
4661                 pctx->errcode = 0;
4662                 return;
4663         }
4664
4665         /* Process the dirents in i_block[] as the "first" block. */
4666         pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist, pb->ino, 0, 0);
4667         if (pctx->errcode)
4668                 goto err;
4669
4670         /* Process the dirents in the EA as a "second" block. */
4671         flags = ctx->fs->flags;
4672         ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
4673         pctx->errcode = ext2fs_inline_data_size(ctx->fs, pb->ino,
4674                                                 &inline_data_size);
4675         ctx->fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
4676                          (ctx->fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
4677         if (pctx->errcode) {
4678                 pctx->errcode = 0;
4679                 return;
4680         }
4681
4682         if (inline_data_size <= EXT4_MIN_INLINE_DATA_SIZE)
4683                 return;
4684
4685         pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist, pb->ino, 0, 1);
4686         if (pctx->errcode)
4687                 goto err;
4688
4689         return;
4690 err:
4691         pctx->blk = 0;
4692         pctx->num = 0;
4693         fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
4694         ctx->flags |= E2F_FLAG_ABORT;
4695 }
4696
4697 /*
4698  * This subroutine is called on each inode to account for all of the
4699  * blocks used by that inode.
4700  */
4701 static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
4702                          char *block_buf, const struct ea_quota *ea_ibody_quota)
4703 {
4704         ext2_filsys fs = ctx->fs;
4705         struct process_block_struct pb;
4706         ext2_ino_t      ino = pctx->ino;
4707         struct ext2_inode *inode = pctx->inode;
4708         unsigned        bad_size = 0;
4709         int             dirty_inode = 0;
4710         int             extent_fs;
4711         int             inlinedata_fs;
4712         __u64           size;
4713         struct ea_quota ea_block_quota;
4714
4715         pb.ino = ino;
4716         pb.num_blocks = EXT2FS_B2C(ctx->fs,
4717                                    ea_ibody_quota ? ea_ibody_quota->blocks : 0);
4718         pb.last_block = ~0;
4719         pb.last_init_lblock = -1;
4720         pb.last_db_block = -1;
4721         pb.num_illegal_blocks = 0;
4722         pb.suppress = 0; pb.clear = 0;
4723         pb.fragmented = 0;
4724         pb.compressed = 0;
4725         pb.previous_block = 0;
4726         pb.is_dir = LINUX_S_ISDIR(inode->i_mode);
4727         pb.is_reg = LINUX_S_ISREG(inode->i_mode);
4728         pb.max_blocks = 1U << (31 - fs->super->s_log_block_size);
4729         pb.inode = inode;
4730         pb.pctx = pctx;
4731         pb.ctx = ctx;
4732         pb.inode_modified = 0;
4733         pb.eti.force_rebuild = 0;
4734         pctx->ino = ino;
4735         pctx->errcode = 0;
4736
4737         extent_fs = ext2fs_has_feature_extents(ctx->fs->super);
4738         inlinedata_fs = ext2fs_has_feature_inline_data(ctx->fs->super);
4739
4740         if (check_ext_attr(ctx, pctx, block_buf, &ea_block_quota)) {
4741                 if (e2fsck_should_abort(ctx))
4742                         goto out;
4743                 pb.num_blocks += EXT2FS_B2C(ctx->fs, ea_block_quota.blocks);
4744         }
4745
4746         if (inlinedata_fs && (inode->i_flags & EXT4_INLINE_DATA_FL))
4747                 check_blocks_inline_data(ctx, pctx, &pb);
4748         else if (ext2fs_inode_has_valid_blocks2(fs, inode)) {
4749                 if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL))
4750                         check_blocks_extents(ctx, pctx, &pb);
4751                 else {
4752                         int flags;
4753                         /*
4754                          * If we've modified the inode, write it out before
4755                          * iterate() tries to use it.
4756                          */
4757                         if (dirty_inode) {
4758                                 e2fsck_write_inode(ctx, ino, inode,
4759                                                    "check_blocks");
4760                                 dirty_inode = 0;
4761                         }
4762                         flags = fs->flags;
4763                         fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
4764                         pctx->errcode = ext2fs_block_iterate3(fs, ino,
4765                                                 pb.is_dir ? BLOCK_FLAG_HOLE : 0,
4766                                                 block_buf, process_block, &pb);
4767                         /*
4768                          * We do not have uninitialized extents in non extent
4769                          * files.
4770                          */
4771                         pb.last_init_lblock = pb.last_block;
4772                         /*
4773                          * If iterate() changed a block mapping, we have to
4774                          * re-read the inode.  If we decide to clear the
4775                          * inode after clearing some stuff, we'll re-write the
4776                          * bad mappings into the inode!
4777                          */
4778                         if (pb.inode_modified)
4779                                 e2fsck_read_inode(ctx, ino, inode,
4780                                                   "check_blocks");
4781                         fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
4782                                     (fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
4783
4784                         if (ctx->options & E2F_OPT_CONVERT_BMAP) {
4785 #ifdef DEBUG
4786                                 printf("bmap rebuild ino=%d\n", ino);
4787 #endif
4788                                 if (!LINUX_S_ISDIR(inode->i_mode) ||
4789                                     !e2fsck_dir_will_be_rehashed(ctx, ino))
4790                                         e2fsck_rebuild_extents_later(ctx, ino);
4791                         }
4792                 }
4793         }
4794         end_problem_latch(ctx, PR_LATCH_BLOCK);
4795         end_problem_latch(ctx, PR_LATCH_TOOBIG);
4796         if (e2fsck_should_abort(ctx))
4797                 goto out;
4798         if (pctx->errcode)
4799                 fix_problem(ctx, PR_1_BLOCK_ITERATE, pctx);
4800
4801         if (pb.fragmented && pb.num_blocks < fs->super->s_blocks_per_group) {
4802                 if (LINUX_S_ISDIR(inode->i_mode))
4803                         ctx->fs_fragmented_dir++;
4804                 else
4805                         ctx->fs_fragmented++;
4806         }
4807
4808         if (pb.clear) {
4809                 e2fsck_clear_inode(ctx, ino, inode, E2F_FLAG_RESTART,
4810                                    "check_blocks");
4811                 return;
4812         }
4813
4814         if (inode->i_flags & EXT2_INDEX_FL) {
4815                 if (handle_htree(ctx, pctx, ino, inode, block_buf)) {
4816                         inode->i_flags &= ~EXT2_INDEX_FL;
4817                         dirty_inode++;
4818                 } else {
4819                         e2fsck_add_dx_dir(ctx, ino, inode, pb.last_block+1);
4820                 }
4821         }
4822
4823         if (!pb.num_blocks && pb.is_dir &&
4824             !(inode->i_flags & EXT4_INLINE_DATA_FL)) {
4825                 if (fix_problem(ctx, PR_1_ZERO_LENGTH_DIR, pctx)) {
4826                         e2fsck_clear_inode(ctx, ino, inode, 0, "check_blocks");
4827                         ctx->fs_directory_count--;
4828                         return;
4829                 }
4830         }
4831
4832         if (ino != quota_type2inum(PRJQUOTA, fs->super) &&
4833             ino != fs->super->s_orphan_file_inum &&
4834             (ino == EXT2_ROOT_INO || ino >= EXT2_FIRST_INODE(ctx->fs->super)) &&
4835             !(inode->i_flags & EXT4_EA_INODE_FL)) {
4836                 quota_data_add(ctx->qctx, (struct ext2_inode_large *) inode,
4837                                ino,
4838                                pb.num_blocks * EXT2_CLUSTER_SIZE(fs->super));
4839                 quota_data_inodes(ctx->qctx, (struct ext2_inode_large *) inode,
4840                                   ino, (ea_ibody_quota ?
4841                                         ea_ibody_quota->inodes : 0) +
4842                                                 ea_block_quota.inodes + 1);
4843         }
4844
4845         if (!ext2fs_has_feature_huge_file(fs->super) ||
4846             !(inode->i_flags & EXT4_HUGE_FILE_FL))
4847                 pb.num_blocks *= (fs->blocksize / 512);
4848         pb.num_blocks *= EXT2FS_CLUSTER_RATIO(fs);
4849 #if 0
4850         printf("inode %u, i_size = %u, last_block = %llu, i_blocks=%llu, num_blocks = %llu\n",
4851                ino, inode->i_size, (unsigned long long) pb.last_block,
4852                (unsigned long long) ext2fs_inode_i_blocks(fs, inode),
4853                (unsigned long long) pb.num_blocks);
4854 #endif
4855         size = EXT2_I_SIZE(inode);
4856         if (pb.is_dir) {
4857                 unsigned nblock = size >> EXT2_BLOCK_SIZE_BITS(fs->super);
4858                 if (inode->i_flags & EXT4_INLINE_DATA_FL) {
4859                         int flags;
4860                         size_t sz = 0;
4861                         errcode_t err;
4862
4863                         flags = ctx->fs->flags;
4864                         ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
4865                         err = ext2fs_inline_data_size(ctx->fs, pctx->ino,
4866                                                       &sz);
4867                         ctx->fs->flags = (flags &
4868                                           EXT2_FLAG_IGNORE_CSUM_ERRORS) |
4869                                          (ctx->fs->flags &
4870                                           ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
4871                         if (err || sz != size) {
4872                                 bad_size = 7;
4873                                 pctx->num = sz;
4874                         }
4875                 } else if (size & (fs->blocksize - 1))
4876                         bad_size = 5;
4877                 else if (nblock > (pb.last_block + 1))
4878                         bad_size = 1;
4879                 else if (nblock < (pb.last_block + 1)) {
4880                         if (((pb.last_block + 1) - nblock) >
4881                             fs->super->s_prealloc_dir_blocks)
4882                                 bad_size = 2;
4883                 }
4884         } else {
4885                 if ((pb.last_init_lblock >= 0) &&
4886                     /* Do not allow initialized allocated blocks past i_size*/
4887                     (size < (__u64)pb.last_init_lblock * fs->blocksize) &&
4888                     !(inode->i_flags & EXT4_VERITY_FL))
4889                         bad_size = 3;
4890                 else if (!(extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) &&
4891                          size > ext2_max_sizes[fs->super->s_log_block_size])
4892                         /* too big for a direct/indirect-mapped file */
4893                         bad_size = 4;
4894                 else if ((extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) &&
4895                          size >
4896                          ((1ULL << (32 + EXT2_BLOCK_SIZE_BITS(fs->super))) - 1))
4897                         /* too big for an extent-based file - 32bit ee_block */
4898                         bad_size = 6;
4899         }
4900         /* i_size for symlinks is checked elsewhere */
4901         if (bad_size && !LINUX_S_ISLNK(inode->i_mode)) {
4902                 /* Did inline_data set pctx->num earlier? */
4903                 if (bad_size != 7)
4904                         pctx->num = (pb.last_block + 1) * fs->blocksize;
4905                 pctx->group = bad_size;
4906                 if (fix_problem(ctx, PR_1_BAD_I_SIZE, pctx)) {
4907                         ext2fs_inode_size_set(fs, inode, pctx->num);
4908                         if (EXT2_I_SIZE(inode) == 0 &&
4909                             (inode->i_flags & EXT4_INLINE_DATA_FL)) {
4910                                 memset(inode->i_block, 0,
4911                                        sizeof(inode->i_block));
4912                                 inode->i_flags &= ~EXT4_INLINE_DATA_FL;
4913                         }
4914                         dirty_inode++;
4915                 }
4916                 pctx->num = 0;
4917         }
4918         if (LINUX_S_ISREG(inode->i_mode) &&
4919             ext2fs_needs_large_file_feature(EXT2_I_SIZE(inode)))
4920                 ctx->large_files++;
4921         if ((fs->super->s_creator_os != EXT2_OS_HURD) &&
4922             ((pb.num_blocks != ext2fs_inode_i_blocks(fs, inode)) ||
4923              (ext2fs_has_feature_huge_file(fs->super) &&
4924               (inode->i_flags & EXT4_HUGE_FILE_FL) &&
4925               (inode->osd2.linux2.l_i_blocks_hi != 0)))) {
4926                 pctx->num = pb.num_blocks;
4927                 if (fix_problem(ctx, PR_1_BAD_I_BLOCKS, pctx)) {
4928                         inode->i_blocks = pb.num_blocks;
4929                         inode->osd2.linux2.l_i_blocks_hi = pb.num_blocks >> 32;
4930                         dirty_inode++;
4931                 }
4932                 pctx->num = 0;
4933         }
4934
4935         /*
4936          * The kernel gets mad if we ask it to allocate bigalloc clusters to
4937          * a block mapped file, so rebuild it as an extent file.  We can skip
4938          * symlinks because they're never rewritten.
4939          */
4940         if (ext2fs_has_feature_bigalloc(fs->super) &&
4941             (LINUX_S_ISREG(inode->i_mode) || LINUX_S_ISDIR(inode->i_mode)) &&
4942             ext2fs_inode_data_blocks2(fs, inode) > 0 &&
4943             (ino == EXT2_ROOT_INO || ino >= EXT2_FIRST_INO(fs->super)) &&
4944             !(inode->i_flags & (EXT4_EXTENTS_FL | EXT4_INLINE_DATA_FL)) &&
4945             fix_problem(ctx, PR_1_NO_BIGALLOC_BLOCKMAP_FILES, pctx)) {
4946                 pctx->errcode = e2fsck_rebuild_extents_later(ctx, ino);
4947                 if (pctx->errcode)
4948                         goto out;
4949         }
4950
4951         if (ctx->dirs_to_hash && pb.is_dir &&
4952             !(ctx->lost_and_found && ctx->lost_and_found == ino) &&
4953             !(inode->i_flags & EXT2_INDEX_FL) &&
4954             ((inode->i_size / fs->blocksize) >= 3))
4955                 e2fsck_rehash_dir_later(ctx, ino);
4956
4957 out:
4958         if (dirty_inode)
4959                 e2fsck_write_inode(ctx, ino, inode, "check_blocks");
4960 }
4961
4962 #if 0
4963 /*
4964  * Helper function called by process block when an illegal block is
4965  * found.  It returns a description about why the block is illegal
4966  */
4967 static char *describe_illegal_block(ext2_filsys fs, blk64_t block)
4968 {
4969         blk64_t super;
4970         int     i;
4971         static char     problem[80];
4972
4973         super = fs->super->s_first_data_block;
4974         strcpy(problem, "PROGRAMMING ERROR: Unknown reason for illegal block");
4975         if (block < super) {
4976                 sprintf(problem, "< FIRSTBLOCK (%u)", super);
4977                 return(problem);
4978         } else if (block >= ext2fs_blocks_count(fs->super)) {
4979                 sprintf(problem, "> BLOCKS (%u)", ext2fs_blocks_count(fs->super));
4980                 return(problem);
4981         }
4982         for (i = 0; i < fs->group_desc_count; i++) {
4983                 if (block == super) {
4984                         sprintf(problem, "is the superblock in group %d", i);
4985                         break;
4986                 }
4987                 if (block > super &&
4988                     block <= (super + fs->desc_blocks)) {
4989                         sprintf(problem, "is in the group descriptors "
4990                                 "of group %d", i);
4991                         break;
4992                 }
4993                 if (block == ext2fs_block_bitmap_loc(fs, i)) {
4994                         sprintf(problem, "is the block bitmap of group %d", i);
4995                         break;
4996                 }
4997                 if (block == ext2fs_inode_bitmap_loc(fs, i)) {
4998                         sprintf(problem, "is the inode bitmap of group %d", i);
4999                         break;
5000                 }
5001                 if (block >= ext2fs_inode_table_loc(fs, i) &&
5002                     (block < ext2fs_inode_table_loc(fs, i)
5003                      + fs->inode_blocks_per_group)) {
5004                         sprintf(problem, "is in the inode table of group %d",
5005                                 i);
5006                         break;
5007                 }
5008                 super += fs->super->s_blocks_per_group;
5009         }
5010         return(problem);
5011 }
5012 #endif
5013
5014 /*
5015  * This is a helper function for check_blocks().
5016  */
5017 static int process_block(ext2_filsys fs,
5018                   blk64_t       *block_nr,
5019                   e2_blkcnt_t blockcnt,
5020                   blk64_t ref_block EXT2FS_ATTR((unused)),
5021                   int ref_offset EXT2FS_ATTR((unused)),
5022                   void *priv_data)
5023 {
5024         struct process_block_struct *p;
5025         struct problem_context *pctx;
5026         blk64_t blk = *block_nr;
5027         int     ret_code = 0;
5028         problem_t       problem = 0;
5029         e2fsck_t        ctx;
5030
5031         p = (struct process_block_struct *) priv_data;
5032         pctx = p->pctx;
5033         ctx = p->ctx;
5034
5035         /*
5036          * For a directory, add logical block zero for processing even if it's
5037          * not mapped or we'll be perennially stuck with broken "." and ".."
5038          * entries.
5039          */
5040         if (p->is_dir && blockcnt == 0 && blk == 0) {
5041                 pctx->errcode = ext2fs_add_dir_block2(fs->dblist, p->ino, 0, 0);
5042                 if (pctx->errcode) {
5043                         pctx->blk = blk;
5044                         pctx->num = blockcnt;
5045                         goto failed_add_dir_block;
5046                 }
5047                 p->last_db_block++;
5048         }
5049
5050         if (blk == 0)
5051                 return 0;
5052
5053 #if 0
5054         printf("Process_block, inode %lu, block %u, #%d\n", p->ino, blk,
5055                blockcnt);
5056 #endif
5057
5058         /*
5059          * Simplistic fragmentation check.  We merely require that the
5060          * file be contiguous.  (Which can never be true for really
5061          * big files that are greater than a block group.)
5062          */
5063         if (p->previous_block && p->ino != EXT2_RESIZE_INO) {
5064                 if (p->previous_block+1 != blk) {
5065                         if (ctx->options & E2F_OPT_FRAGCHECK) {
5066                                 char type = '?';
5067
5068                                 if (p->is_dir)
5069                                         type = 'd';
5070                                 else if (p->is_reg)
5071                                         type = 'f';
5072
5073                                 printf(_("%6lu(%c): expecting %6lu "
5074                                          "got phys %6lu (blkcnt %lld)\n"),
5075                                        (unsigned long) pctx->ino, type,
5076                                        (unsigned long) p->previous_block+1,
5077                                        (unsigned long) blk,
5078                                        (long long) blockcnt);
5079                         }
5080                         p->fragmented = 1;
5081                 }
5082         }
5083
5084         if (p->is_dir && !ext2fs_has_feature_largedir(fs->super) &&
5085             !pctx->inode->i_size_high &&
5086             blockcnt > (1 << (21 - fs->super->s_log_block_size)))
5087                 problem = PR_1_TOOBIG_DIR;
5088         if (p->is_dir && p->num_blocks + 1 >= p->max_blocks)
5089                 problem = PR_1_TOOBIG_DIR;
5090         if (p->is_reg && p->num_blocks + 1 >= p->max_blocks)
5091                 problem = PR_1_TOOBIG_REG;
5092         if (!p->is_dir && !p->is_reg && blockcnt > 0)
5093                 problem = PR_1_TOOBIG_SYMLINK;
5094
5095         if (blk < fs->super->s_first_data_block ||
5096             blk >= ext2fs_blocks_count(fs->super))
5097                 problem = PR_1_ILLEGAL_BLOCK_NUM;
5098
5099         /*
5100          * If this IND/DIND/TIND block is squatting atop some critical metadata
5101          * (group descriptors, superblock, bitmap, inode table), any write to
5102          * "fix" mapping problems will destroy the metadata.  We'll let pass 1b
5103          * fix that and restart fsck.
5104          */
5105         if (blockcnt < 0 &&
5106             p->ino != EXT2_RESIZE_INO &&
5107             blk < ctx->fs->super->s_blocks_count &&
5108             ext2fs_test_block_bitmap2(ctx->block_metadata_map, blk)) {
5109                 pctx->blk = blk;
5110                 fix_problem(ctx, PR_1_CRITICAL_METADATA_COLLISION, pctx);
5111                 if ((ctx->options & E2F_OPT_NO) == 0)
5112                         ctx->flags |= E2F_FLAG_RESTART_LATER;
5113         }
5114
5115         if (problem) {
5116                 p->num_illegal_blocks++;
5117                 /*
5118                  * A bit of subterfuge here -- we're trying to fix a block
5119                  * mapping, but the IND/DIND/TIND block could have collided
5120                  * with some critical metadata.  So, fix the in-core mapping so
5121                  * iterate won't go insane, but return 0 instead of
5122                  * BLOCK_CHANGED so that it won't write the remapping out to
5123                  * our multiply linked block.
5124                  *
5125                  * Even if we previously determined that an *IND block
5126                  * conflicts with critical metadata, we must still try to
5127                  * iterate the *IND block as if it is an *IND block to find and
5128                  * mark the blocks it points to.  Better to be overly cautious
5129                  * with the used_blocks map so that we don't move the *IND
5130                  * block to a block that's really in use!
5131                  */
5132                 if (p->ino != EXT2_RESIZE_INO &&
5133                     ref_block != 0 &&
5134                     ext2fs_test_block_bitmap2(ctx->block_metadata_map,
5135                                               ref_block)) {
5136                         *block_nr = 0;
5137                         return 0;
5138                 }
5139                 if (!p->suppress && (p->num_illegal_blocks % 12) == 0) {
5140                         if (fix_problem(ctx, PR_1_TOO_MANY_BAD_BLOCKS, pctx)) {
5141                                 p->clear = 1;
5142                                 return BLOCK_ABORT;
5143                         }
5144                         if (fix_problem(ctx, PR_1_SUPPRESS_MESSAGES, pctx)) {
5145                                 p->suppress = 1;
5146                                 set_latch_flags(PR_LATCH_BLOCK,
5147                                                 PRL_SUPPRESS, 0);
5148                         }
5149                 }
5150                 pctx->blk = blk;
5151                 pctx->blkcount = blockcnt;
5152                 if (fix_problem(ctx, problem, pctx)) {
5153                         blk = *block_nr = 0;
5154                         ret_code = BLOCK_CHANGED;
5155                         p->inode_modified = 1;
5156                         /*
5157                          * If the directory block is too big and is beyond the
5158                          * end of the FS, don't bother trying to add it for
5159                          * processing -- the kernel would never have created a
5160                          * directory this large, and we risk an ENOMEM abort.
5161                          * In any case, the toobig handler for extent-based
5162                          * directories also doesn't feed toobig blocks to
5163                          * pass 2.
5164                          */
5165                         if (problem == PR_1_TOOBIG_DIR)
5166                                 return ret_code;
5167                         goto mark_dir;
5168                 } else
5169                         return 0;
5170         }
5171
5172         if (p->ino == EXT2_RESIZE_INO) {
5173                 /*
5174                  * The resize inode has already be sanity checked
5175                  * during pass #0 (the superblock checks).  All we
5176                  * have to do is mark the double indirect block as
5177                  * being in use; all of the other blocks are handled
5178                  * by mark_table_blocks()).
5179                  */
5180                 if (blockcnt == BLOCK_COUNT_DIND)
5181                         mark_block_used(ctx, blk);
5182                 p->num_blocks++;
5183         } else if (!(ctx->fs->cluster_ratio_bits &&
5184                      p->previous_block &&
5185                      (EXT2FS_B2C(ctx->fs, blk) ==
5186                       EXT2FS_B2C(ctx->fs, p->previous_block)) &&
5187                      (blk & EXT2FS_CLUSTER_MASK(ctx->fs)) ==
5188                      ((unsigned) blockcnt & EXT2FS_CLUSTER_MASK(ctx->fs)))) {
5189                 mark_block_used(ctx, blk);
5190                 p->num_blocks++;
5191         } else if (has_unaligned_cluster_map(ctx, p->previous_block,
5192                                              p->last_block, blk, blockcnt)) {
5193                 pctx->blk = blockcnt;
5194                 pctx->blk2 = blk;
5195                 fix_problem(ctx, PR_1_MISALIGNED_CLUSTER, pctx);
5196                 mark_block_used(ctx, blk);
5197                 mark_block_used(ctx, blk);
5198         }
5199         if (blockcnt >= 0)
5200                 p->last_block = blockcnt;
5201         p->previous_block = blk;
5202 mark_dir:
5203         if (p->is_dir && (blockcnt >= 0)) {
5204                 while (++p->last_db_block < blockcnt) {
5205                         pctx->errcode = ext2fs_add_dir_block2(fs->dblist,
5206                                                               p->ino, 0,
5207                                                               p->last_db_block);
5208                         if (pctx->errcode) {
5209                                 pctx->blk = 0;
5210                                 pctx->num = p->last_db_block;
5211                                 goto failed_add_dir_block;
5212                         }
5213                 }
5214                 pctx->errcode = ext2fs_add_dir_block2(fs->dblist, p->ino,
5215                                                       blk, blockcnt);
5216                 if (pctx->errcode) {
5217                         pctx->blk = blk;
5218                         pctx->num = blockcnt;
5219                 failed_add_dir_block:
5220                         fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
5221                         /* Should never get here */
5222                         ctx->flags |= E2F_FLAG_ABORT;
5223                         return BLOCK_ABORT;
5224                 }
5225         }
5226         return ret_code;
5227 }
5228
5229 static int process_bad_block(ext2_filsys fs,
5230                       blk64_t *block_nr,
5231                       e2_blkcnt_t blockcnt,
5232                       blk64_t ref_block EXT2FS_ATTR((unused)),
5233                       int ref_offset EXT2FS_ATTR((unused)),
5234                       void *priv_data)
5235 {
5236         struct process_block_struct *p;
5237         blk64_t         blk = *block_nr;
5238         blk64_t         first_block;
5239         dgrp_t          i;
5240         struct problem_context *pctx;
5241         e2fsck_t        ctx;
5242
5243         if (!blk)
5244                 return 0;
5245
5246         p = (struct process_block_struct *) priv_data;
5247         ctx = p->ctx;
5248         pctx = p->pctx;
5249
5250         pctx->ino = EXT2_BAD_INO;
5251         pctx->blk = blk;
5252         pctx->blkcount = blockcnt;
5253
5254         if ((blk < fs->super->s_first_data_block) ||
5255             (blk >= ext2fs_blocks_count(fs->super))) {
5256                 if (fix_problem(ctx, PR_1_BB_ILLEGAL_BLOCK_NUM, pctx)) {
5257                         *block_nr = 0;
5258                         return BLOCK_CHANGED;
5259                 } else
5260                         return 0;
5261         }
5262
5263         if (blockcnt < 0) {
5264                 if (ext2fs_test_block_bitmap2(p->fs_meta_blocks, blk)) {
5265                         p->bbcheck = 1;
5266                         if (fix_problem(ctx, PR_1_BB_FS_BLOCK, pctx)) {
5267                                 *block_nr = 0;
5268                                 return BLOCK_CHANGED;
5269                         }
5270                 } else if (is_blocks_used(ctx, blk, 1)) {
5271                         p->bbcheck = 1;
5272                         if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK,
5273                                         pctx)) {
5274                                 *block_nr = 0;
5275                                 return BLOCK_CHANGED;
5276                         }
5277                         if (e2fsck_should_abort(ctx))
5278                                 return BLOCK_ABORT;
5279                 } else {
5280                         mark_block_used(ctx, blk);
5281                 }
5282                 return 0;
5283         }
5284 #if 0
5285         printf ("DEBUG: Marking %u as bad.\n", blk);
5286 #endif
5287         ctx->fs_badblocks_count++;
5288         /*
5289          * If the block is not used, then mark it as used and return.
5290          * If it is already marked as found, this must mean that
5291          * there's an overlap between the filesystem table blocks
5292          * (bitmaps and inode table) and the bad block list.
5293          */
5294         if (!is_blocks_used(ctx, blk, 1)) {
5295                 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
5296                 return 0;
5297         }
5298         /*
5299          * Try to find the where the filesystem block was used...
5300          */
5301         first_block = fs->super->s_first_data_block;
5302
5303         for (i = 0; i < fs->group_desc_count; i++ ) {
5304                 pctx->group = i;
5305                 pctx->blk = blk;
5306                 if (!ext2fs_bg_has_super(fs, i))
5307                         goto skip_super;
5308                 if (blk == first_block) {
5309                         if (i == 0) {
5310                                 if (fix_problem(ctx,
5311                                                 PR_1_BAD_PRIMARY_SUPERBLOCK,
5312                                                 pctx)) {
5313                                         *block_nr = 0;
5314                                         return BLOCK_CHANGED;
5315                                 }
5316                                 return 0;
5317                         }
5318                         fix_problem(ctx, PR_1_BAD_SUPERBLOCK, pctx);
5319                         return 0;
5320                 }
5321                 if ((blk > first_block) &&
5322                     (blk <= first_block + fs->desc_blocks)) {
5323                         if (i == 0) {
5324                                 pctx->blk = *block_nr;
5325                                 if (fix_problem(ctx,
5326                         PR_1_BAD_PRIMARY_GROUP_DESCRIPTOR, pctx)) {
5327                                         *block_nr = 0;
5328                                         return BLOCK_CHANGED;
5329                                 }
5330                                 return 0;
5331                         }
5332                         fix_problem(ctx, PR_1_BAD_GROUP_DESCRIPTORS, pctx);
5333                         return 0;
5334                 }
5335         skip_super:
5336                 if (blk == ext2fs_block_bitmap_loc(fs, i)) {
5337                         if (fix_problem(ctx, PR_1_BB_BAD_BLOCK, pctx)) {
5338                                 ctx->invalid_block_bitmap_flag[i]++;
5339                                 ctx->invalid_bitmaps++;
5340                         }
5341                         return 0;
5342                 }
5343                 if (blk == ext2fs_inode_bitmap_loc(fs, i)) {
5344                         if (fix_problem(ctx, PR_1_IB_BAD_BLOCK, pctx)) {
5345                                 ctx->invalid_inode_bitmap_flag[i]++;
5346                                 ctx->invalid_bitmaps++;
5347                         }
5348                         return 0;
5349                 }
5350                 if ((blk >= ext2fs_inode_table_loc(fs, i)) &&
5351                     (blk < (ext2fs_inode_table_loc(fs, i) +
5352                             fs->inode_blocks_per_group))) {
5353                         /*
5354                          * If there are bad blocks in the inode table,
5355                          * the inode scan code will try to do
5356                          * something reasonable automatically.
5357                          */
5358                         return 0;
5359                 }
5360                 first_block += fs->super->s_blocks_per_group;
5361         }
5362         /*
5363          * If we've gotten to this point, then the only
5364          * possibility is that the bad block inode meta data
5365          * is using a bad block.
5366          */
5367         if ((blk == p->inode->i_block[EXT2_IND_BLOCK]) ||
5368             (blk == p->inode->i_block[EXT2_DIND_BLOCK]) ||
5369             (blk == p->inode->i_block[EXT2_TIND_BLOCK])) {
5370                 p->bbcheck = 1;
5371                 if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK, pctx)) {
5372                         *block_nr = 0;
5373                         return BLOCK_CHANGED;
5374                 }
5375                 if (e2fsck_should_abort(ctx))
5376                         return BLOCK_ABORT;
5377                 return 0;
5378         }
5379
5380         pctx->group = -1;
5381
5382         /* Warn user that the block wasn't claimed */
5383         fix_problem(ctx, PR_1_PROGERR_CLAIMED_BLOCK, pctx);
5384
5385         return 0;
5386 }
5387
5388 static void new_table_block(e2fsck_t ctx, blk64_t first_block, dgrp_t group,
5389                             const char *name, int num, blk64_t *new_block)
5390 {
5391         ext2_filsys fs = ctx->fs;
5392         dgrp_t          last_grp;
5393         blk64_t         old_block = *new_block;
5394         blk64_t         last_block;
5395         dgrp_t          flexbg;
5396         unsigned        flexbg_size;
5397         int             i, is_flexbg;
5398         char            *buf;
5399         struct problem_context  pctx;
5400
5401         clear_problem_context(&pctx);
5402
5403         pctx.group = group;
5404         pctx.blk = old_block;
5405         pctx.str = name;
5406
5407         /*
5408          * For flex_bg filesystems, first try to allocate the metadata
5409          * within the flex_bg, and if that fails then try finding the
5410          * space anywhere in the filesystem.
5411          */
5412         is_flexbg = ext2fs_has_feature_flex_bg(fs->super);
5413         if (is_flexbg) {
5414                 flexbg_size = 1U << fs->super->s_log_groups_per_flex;
5415                 flexbg = group / flexbg_size;
5416                 first_block = ext2fs_group_first_block2(fs,
5417                                                         flexbg_size * flexbg);
5418                 last_grp = group | (flexbg_size - 1);
5419                 if (last_grp >= fs->group_desc_count)
5420                         last_grp = fs->group_desc_count - 1;
5421                 last_block = ext2fs_group_last_block2(fs, last_grp);
5422         } else
5423                 last_block = ext2fs_group_last_block2(fs, group);
5424         pctx.errcode = ext2fs_get_free_blocks2(fs, first_block, last_block,
5425                                                num, ctx->block_found_map,
5426                                                new_block);
5427         if (is_flexbg && (pctx.errcode == EXT2_ET_BLOCK_ALLOC_FAIL))
5428                 pctx.errcode = ext2fs_get_free_blocks2(fs,
5429                                 fs->super->s_first_data_block,
5430                                 ext2fs_blocks_count(fs->super),
5431                                 num, ctx->block_found_map, new_block);
5432         if (pctx.errcode) {
5433                 pctx.num = num;
5434                 fix_problem(ctx, PR_1_RELOC_BLOCK_ALLOCATE, &pctx);
5435                 ext2fs_unmark_valid(fs);
5436                 ctx->flags |= E2F_FLAG_ABORT;
5437                 return;
5438         }
5439         pctx.errcode = ext2fs_get_mem(fs->blocksize, &buf);
5440         if (pctx.errcode) {
5441                 fix_problem(ctx, PR_1_RELOC_MEMORY_ALLOCATE, &pctx);
5442                 ext2fs_unmark_valid(fs);
5443                 ctx->flags |= E2F_FLAG_ABORT;
5444                 return;
5445         }
5446         ext2fs_mark_super_dirty(fs);
5447         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
5448         pctx.blk2 = *new_block;
5449         fix_problem(ctx, (old_block ? PR_1_RELOC_FROM_TO :
5450                           PR_1_RELOC_TO), &pctx);
5451         pctx.blk2 = 0;
5452         for (i = 0; i < num; i++) {
5453                 pctx.blk = i;
5454                 ext2fs_mark_block_bitmap2(ctx->block_found_map, (*new_block)+i);
5455                 if (old_block) {
5456                         pctx.errcode = io_channel_read_blk64(fs->io,
5457                                    old_block + i, 1, buf);
5458                         if (pctx.errcode)
5459                                 fix_problem(ctx, PR_1_RELOC_READ_ERR, &pctx);
5460                         pctx.blk = (*new_block) + i;
5461                         pctx.errcode = io_channel_write_blk64(fs->io, pctx.blk,
5462                                                               1, buf);
5463                 } else {
5464                         pctx.blk = (*new_block) + i;
5465                         pctx.errcode = ext2fs_zero_blocks2(fs, pctx.blk, 1,
5466                                                            NULL, NULL);
5467                 }
5468
5469                 if (pctx.errcode)
5470                         fix_problem(ctx, PR_1_RELOC_WRITE_ERR, &pctx);
5471         }
5472         ext2fs_free_mem(&buf);
5473 }
5474
5475 /*
5476  * This routine gets called at the end of pass 1 if bad blocks are
5477  * detected in the superblock, group descriptors, inode_bitmaps, or
5478  * block bitmaps.  At this point, all of the blocks have been mapped
5479  * out, so we can try to allocate new block(s) to replace the bad
5480  * blocks.
5481  */
5482 static void handle_fs_bad_blocks(e2fsck_t ctx)
5483 {
5484         ext2_filsys fs = ctx->fs;
5485         dgrp_t          i;
5486         blk64_t         first_block;
5487         blk64_t         new_blk;
5488
5489         for (i = 0; i < fs->group_desc_count; i++) {
5490                 first_block = ext2fs_group_first_block2(fs, i);
5491
5492                 if (ctx->invalid_block_bitmap_flag[i]) {
5493                         new_blk = ext2fs_block_bitmap_loc(fs, i);
5494                         new_table_block(ctx, first_block, i, _("block bitmap"),
5495                                         1, &new_blk);
5496                         ext2fs_block_bitmap_loc_set(fs, i, new_blk);
5497                 }
5498                 if (ctx->invalid_inode_bitmap_flag[i]) {
5499                         new_blk = ext2fs_inode_bitmap_loc(fs, i);
5500                         new_table_block(ctx, first_block, i, _("inode bitmap"),
5501                                         1, &new_blk);
5502                         ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
5503                 }
5504                 if (ctx->invalid_inode_table_flag[i]) {
5505                         new_blk = ext2fs_inode_table_loc(fs, i);
5506                         new_table_block(ctx, first_block, i, _("inode table"),
5507                                         fs->inode_blocks_per_group,
5508                                         &new_blk);
5509                         ext2fs_inode_table_loc_set(fs, i, new_blk);
5510                         ctx->flags |= E2F_FLAG_RESTART;
5511                 }
5512         }
5513         ctx->invalid_bitmaps = 0;
5514 }
5515
5516 /*
5517  * This routine marks all blocks which are used by the superblock,
5518  * group descriptors, inode bitmaps, and block bitmaps.
5519  */
5520 static void mark_table_blocks(e2fsck_t ctx)
5521 {
5522         ext2_filsys fs = ctx->fs;
5523         blk64_t b;
5524         dgrp_t  i;
5525         unsigned int    j;
5526         struct problem_context pctx;
5527
5528         clear_problem_context(&pctx);
5529
5530         for (i = 0; i < fs->group_desc_count; i++) {
5531                 pctx.group = i;
5532
5533                 ext2fs_reserve_super_and_bgd(fs, i, ctx->block_found_map);
5534                 ext2fs_reserve_super_and_bgd(fs, i, ctx->block_metadata_map);
5535
5536                 /*
5537                  * Mark the blocks used for the inode table
5538                  */
5539                 if (ext2fs_inode_table_loc(fs, i)) {
5540                         for (j = 0, b = ext2fs_inode_table_loc(fs, i);
5541                              j < fs->inode_blocks_per_group;
5542                              j++, b++) {
5543                                 if (ext2fs_test_block_bitmap2(ctx->block_found_map,
5544                                                              b)) {
5545                                         pctx.blk = b;
5546                                         if (!ctx->invalid_inode_table_flag[i] &&
5547                                             fix_problem(ctx,
5548                                                 PR_1_ITABLE_CONFLICT, &pctx)) {
5549                                                 ctx->invalid_inode_table_flag[i]++;
5550                                                 ctx->invalid_bitmaps++;
5551                                         }
5552                                 } else {
5553                                     ext2fs_mark_block_bitmap2(
5554                                                 ctx->block_found_map, b);
5555                                     ext2fs_mark_block_bitmap2(
5556                                                 ctx->block_metadata_map, b);
5557                                 }
5558                         }
5559                 }
5560
5561                 /*
5562                  * Mark block used for the block bitmap
5563                  */
5564                 if (ext2fs_block_bitmap_loc(fs, i)) {
5565                         if (ext2fs_test_block_bitmap2(ctx->block_found_map,
5566                                      ext2fs_block_bitmap_loc(fs, i))) {
5567                                 pctx.blk = ext2fs_block_bitmap_loc(fs, i);
5568                                 if (fix_problem(ctx, PR_1_BB_CONFLICT, &pctx)) {
5569                                         ctx->invalid_block_bitmap_flag[i]++;
5570                                         ctx->invalid_bitmaps++;
5571                                 }
5572                         } else {
5573                             ext2fs_mark_block_bitmap2(ctx->block_found_map,
5574                                      ext2fs_block_bitmap_loc(fs, i));
5575                             ext2fs_mark_block_bitmap2(ctx->block_metadata_map,
5576                                      ext2fs_block_bitmap_loc(fs, i));
5577                         }
5578                 }
5579                 /*
5580                  * Mark block used for the inode bitmap
5581                  */
5582                 if (ext2fs_inode_bitmap_loc(fs, i)) {
5583                         if (ext2fs_test_block_bitmap2(ctx->block_found_map,
5584                                      ext2fs_inode_bitmap_loc(fs, i))) {
5585                                 pctx.blk = ext2fs_inode_bitmap_loc(fs, i);
5586                                 if (fix_problem(ctx, PR_1_IB_CONFLICT, &pctx)) {
5587                                         ctx->invalid_inode_bitmap_flag[i]++;
5588                                         ctx->invalid_bitmaps++;
5589                                 }
5590                         } else {
5591                             ext2fs_mark_block_bitmap2(ctx->block_metadata_map,
5592                                      ext2fs_inode_bitmap_loc(fs, i));
5593                             ext2fs_mark_block_bitmap2(ctx->block_found_map,
5594                                      ext2fs_inode_bitmap_loc(fs, i));
5595                         }
5596                 }
5597         }
5598 }
5599
5600 /*
5601  * These subroutines short circuits ext2fs_get_blocks and
5602  * ext2fs_check_directory; we use them since we already have the inode
5603  * structure, so there's no point in letting the ext2fs library read
5604  * the inode again.
5605  */
5606 static errcode_t pass1_get_blocks(ext2_filsys fs, ext2_ino_t ino,
5607                                   blk_t *blocks)
5608 {
5609         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
5610         int     i;
5611
5612         if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
5613                 return EXT2_ET_CALLBACK_NOTHANDLED;
5614
5615         for (i=0; i < EXT2_N_BLOCKS; i++)
5616                 blocks[i] = ctx->stashed_inode->i_block[i];
5617         return 0;
5618 }
5619
5620 static errcode_t pass1_read_inode(ext2_filsys fs, ext2_ino_t ino,
5621                                   struct ext2_inode *inode)
5622 {
5623         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
5624
5625         if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
5626                 return EXT2_ET_CALLBACK_NOTHANDLED;
5627         *inode = *ctx->stashed_inode;
5628         return 0;
5629 }
5630
5631 static errcode_t pass1_write_inode(ext2_filsys fs, ext2_ino_t ino,
5632                             struct ext2_inode *inode)
5633 {
5634         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
5635
5636         if ((ino == ctx->stashed_ino) && ctx->stashed_inode &&
5637                 (inode != ctx->stashed_inode))
5638                 *ctx->stashed_inode = *inode;
5639         return EXT2_ET_CALLBACK_NOTHANDLED;
5640 }
5641
5642 static errcode_t pass1_check_directory(ext2_filsys fs, ext2_ino_t ino)
5643 {
5644         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
5645
5646         if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
5647                 return EXT2_ET_CALLBACK_NOTHANDLED;
5648
5649         if (!LINUX_S_ISDIR(ctx->stashed_inode->i_mode))
5650                 return EXT2_ET_NO_DIRECTORY;
5651         return 0;
5652 }
5653
5654 static errcode_t e2fsck_get_alloc_block(ext2_filsys fs, blk64_t goal,
5655                                         blk64_t *ret)
5656 {
5657         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
5658         errcode_t       retval;
5659         blk64_t         new_block;
5660
5661         if (ctx->block_found_map) {
5662                 retval = ext2fs_new_block2(fs, goal, ctx->block_found_map,
5663                                            &new_block);
5664                 if (retval)
5665                         return retval;
5666                 if (fs->block_map) {
5667                         ext2fs_mark_block_bitmap2(fs->block_map, new_block);
5668                         ext2fs_mark_bb_dirty(fs);
5669                 }
5670         } else {
5671                 if (!fs->block_map) {
5672                         retval = ext2fs_read_block_bitmap(fs);
5673                         if (retval)
5674                                 return retval;
5675                 }
5676
5677                 retval = ext2fs_new_block2(fs, goal, fs->block_map, &new_block);
5678                 if (retval)
5679                         return retval;
5680         }
5681
5682         *ret = new_block;
5683         return (0);
5684 }
5685
5686 static errcode_t e2fsck_new_range(ext2_filsys fs, int flags, blk64_t goal,
5687                                   blk64_t len, blk64_t *pblk, blk64_t *plen)
5688 {
5689         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
5690         errcode_t       retval;
5691
5692         if (ctx->block_found_map)
5693                 return ext2fs_new_range(fs, flags, goal, len,
5694                                         ctx->block_found_map, pblk, plen);
5695
5696         if (!fs->block_map) {
5697                 retval = ext2fs_read_block_bitmap(fs);
5698                 if (retval)
5699                         return retval;
5700         }
5701
5702         return ext2fs_new_range(fs, flags, goal, len, fs->block_map,
5703                                 pblk, plen);
5704 }
5705
5706 static void e2fsck_block_alloc_stats(ext2_filsys fs, blk64_t blk, int inuse)
5707 {
5708         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
5709
5710         /* Never free a critical metadata block */
5711         if (ctx->block_found_map &&
5712             ctx->block_metadata_map &&
5713             inuse < 0 &&
5714             ext2fs_test_block_bitmap2(ctx->block_metadata_map, blk))
5715                 return;
5716
5717         if (ctx->block_found_map) {
5718                 if (inuse > 0)
5719                         ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
5720                 else
5721                         ext2fs_unmark_block_bitmap2(ctx->block_found_map, blk);
5722         }
5723 }
5724
5725 static void e2fsck_block_alloc_stats_range(ext2_filsys fs, blk64_t blk,
5726                                            blk_t num, int inuse)
5727 {
5728         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
5729
5730         /* Never free a critical metadata block */
5731         if (ctx->block_found_map &&
5732             ctx->block_metadata_map &&
5733             inuse < 0 &&
5734             ext2fs_test_block_bitmap_range2(ctx->block_metadata_map, blk, num))
5735                 return;
5736
5737         if (ctx->block_found_map) {
5738                 if (inuse > 0)
5739                         ext2fs_mark_block_bitmap_range2(ctx->block_found_map,
5740                                                         blk, num);
5741                 else
5742                         ext2fs_unmark_block_bitmap_range2(ctx->block_found_map,
5743                                                         blk, num);
5744         }
5745 }
5746
5747 void e2fsck_use_inode_shortcuts(e2fsck_t ctx, int use_shortcuts)
5748 {
5749         ext2_filsys fs = ctx->fs;
5750
5751         if (use_shortcuts) {
5752                 fs->get_blocks = pass1_get_blocks;
5753                 fs->check_directory = pass1_check_directory;
5754                 fs->read_inode = pass1_read_inode;
5755                 fs->write_inode = pass1_write_inode;
5756                 ctx->stashed_ino = 0;
5757         } else {
5758                 fs->get_blocks = 0;
5759                 fs->check_directory = 0;
5760                 fs->read_inode = 0;
5761                 fs->write_inode = 0;
5762         }
5763 }
5764
5765 void e2fsck_intercept_block_allocations(e2fsck_t ctx)
5766 {
5767         ext2fs_set_alloc_block_callback(ctx->fs, e2fsck_get_alloc_block, 0);
5768         ext2fs_set_block_alloc_stats_callback(ctx->fs,
5769                                                 e2fsck_block_alloc_stats, 0);
5770         ext2fs_set_new_range_callback(ctx->fs, e2fsck_new_range, NULL);
5771         ext2fs_set_block_alloc_stats_range_callback(ctx->fs,
5772                                         e2fsck_block_alloc_stats_range, NULL);
5773 }