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, ino_t ino);
  89 static void add_casefolded_dir(e2fsck_t ctx, 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;
 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_entry2(ctx->fs, entry, NULL, &hash);
 352         if (retval) {
 353                 com_err("check_large_ea_inode", retval,
 354                         _("while hashing entry with e_value_inum = %u"),
 355                         entry->e_value_inum);
 356                 fatal_error(ctx, 0);
 357         }
 358
 359         if (hash == entry->e_hash) {
 360                 *quota_blocks = size_to_quota_blocks(ctx->fs,
 361                                                      entry->e_value_size);
 362         } else {
 363                 /* This might be an old Lustre-style ea_inode reference. */
 364                 if (inode.i_mtime == pctx->ino &&
 365                     inode.i_generation == pctx->inode->i_generation) {
 366                         *quota_blocks = 0;
 367                 } else {
 368                         /* If target inode is also missing EA_INODE flag,
 369                          * this is likely to be a bad reference.
 370                          */
 371                         if (!(inode.i_flags & EXT4_EA_INODE_FL)) {
 372                                 pctx->num = entry->e_value_inum;
 373                                 return PR_1_ATTR_VALUE_EA_INODE;
 374                         } else {
 375                                 pctx->num = entry->e_hash;
 376                                 return PR_1_ATTR_HASH;
 377                         }
 378                 }
 379         }
 380
 381         if (!(inode.i_flags & EXT4_EA_INODE_FL)) {
 382                 pctx->num = entry->e_value_inum;
 383                 if (fix_problem(ctx, PR_1_ATTR_SET_EA_INODE_FL, pctx)) {
 384                         inode.i_flags |= EXT4_EA_INODE_FL;
 385                         e2fsck_pass1_fix_lock(ctx);
 386                         ext2fs_write_inode(ctx->fs, entry->e_value_inum,
 387                                            &inode);
 388                         e2fsck_pass1_fix_unlock(ctx);
 389                 } else {
 390                         return PR_1_ATTR_NO_EA_INODE_FL;
 391                 }
 392         }
 393         return 0;
 394 }
 395
 396 static void inc_ea_inode_refs(e2fsck_t ctx, struct problem_context *pctx,
 397                               struct ext2_ext_attr_entry *first, void *end)
 398 {
 399         struct ext2_ext_attr_entry *entry;
 400
 401         for (entry = first;
 402              (void *)entry < end && !EXT2_EXT_IS_LAST_ENTRY(entry);
 403              entry = EXT2_EXT_ATTR_NEXT(entry)) {
 404                 if (!entry->e_value_inum)
 405                         continue;
 406                 if (!ctx->ea_inode_refs) {
 407                         pctx->errcode = ea_refcount_create(0,
 408                                                            &ctx->ea_inode_refs);
 409                         if (pctx->errcode) {
 410                                 pctx->num = 4;
 411                                 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
 412                                 ctx->flags |= E2F_FLAG_ABORT;
 413                                 return;
 414                         }
 415                 }
 416                 ea_refcount_increment(ctx->ea_inode_refs, entry->e_value_inum,
 417                                       0);
 418         }
 419 }
 420
 421 static void check_ea_in_inode(e2fsck_t ctx, struct problem_context *pctx,
 422                               struct ea_quota *ea_ibody_quota)
 423 {
 424         struct ext2_super_block *sb = ctx->fs->super;
 425         struct ext2_inode_large *inode;
 426         struct ext2_ext_attr_entry *entry;
 427         char *start, *header, *end;
 428         unsigned int storage_size, remain;
 429         problem_t problem = 0;
 430         region_t region = 0;
 431
 432         ea_ibody_quota->blocks = 0;
 433         ea_ibody_quota->inodes = 0;
 434
 435         inode = (struct ext2_inode_large *) pctx->inode;
 436         storage_size = EXT2_INODE_SIZE(ctx->fs->super) - EXT2_GOOD_OLD_INODE_SIZE -
 437                 inode->i_extra_isize;
 438         header = ((char *) inode) + EXT2_GOOD_OLD_INODE_SIZE +
 439                  inode->i_extra_isize;
 440         end = header + storage_size;
 441         start = header + sizeof(__u32);
 442         entry = (struct ext2_ext_attr_entry *) start;
 443
 444         /* scan all entry's headers first */
 445
 446         /* take finish entry 0UL into account */
 447         remain = storage_size - sizeof(__u32);
 448
 449         region = region_create(0, storage_size);
 450         if (!region) {
 451                 fix_problem(ctx, PR_1_EA_ALLOC_REGION_ABORT, pctx);
 452                 problem = 0;
 453                 ctx->flags |= E2F_FLAG_ABORT;
 454                 return;
 455         }
 456         if (region_allocate(region, 0, sizeof(__u32))) {
 457                 problem = PR_1_INODE_EA_ALLOC_COLLISION;
 458                 goto fix;
 459         }
 460
 461         while (remain >= sizeof(struct ext2_ext_attr_entry) &&
 462                !EXT2_EXT_IS_LAST_ENTRY(entry)) {
 463                 __u32 hash;
 464
 465                 if (region_allocate(region, (char *)entry - (char *)header,
 466                                     EXT2_EXT_ATTR_LEN(entry->e_name_len))) {
 467                         problem = PR_1_INODE_EA_ALLOC_COLLISION;
 468                         goto fix;
 469                 }
 470
 471                 /* header eats this space */
 472                 remain -= sizeof(struct ext2_ext_attr_entry);
 473
 474                 /* is attribute name valid? */
 475                 if (EXT2_EXT_ATTR_SIZE(entry->e_name_len) > remain) {
 476                         pctx->num = entry->e_name_len;
 477                         problem = PR_1_ATTR_NAME_LEN;
 478                         goto fix;
 479                 }
 480
 481                 /* attribute len eats this space */
 482                 remain -= EXT2_EXT_ATTR_SIZE(entry->e_name_len);
 483
 484                 if (entry->e_value_inum == 0) {
 485                         /* check value size */
 486                         if (entry->e_value_size > remain) {
 487                                 pctx->num = entry->e_value_size;
 488                                 problem = PR_1_ATTR_VALUE_SIZE;
 489                                 goto fix;
 490                         }
 491
 492                         if (entry->e_value_size &&
 493                             region_allocate(region,
 494                                             sizeof(__u32) + entry->e_value_offs,
 495                                             EXT2_EXT_ATTR_SIZE(
 496                                                 entry->e_value_size))) {
 497                                 problem = PR_1_INODE_EA_ALLOC_COLLISION;
 498                                 goto fix;
 499                         }
 500
 501                         hash = ext2fs_ext_attr_hash_entry(entry,
 502                                                           start + entry->e_value_offs);
 503
 504                         /* e_hash may be 0 in older inode's ea */
 505                         if (entry->e_hash != 0 && entry->e_hash != hash) {
 506                                 pctx->num = entry->e_hash;
 507                                 problem = PR_1_ATTR_HASH;
 508                                 goto fix;
 509                         }
 510                 } else {
 511                         blk64_t quota_blocks;
 512
 513                         problem = check_large_ea_inode(ctx, entry, pctx,
 514                                                        &quota_blocks);
 515                         if (problem != 0)
 516                                 goto fix;
 517
 518                         ea_ibody_quota->blocks += quota_blocks;
 519                         ea_ibody_quota->inodes++;
 520                 }
 521
 522                 /* If EA value is stored in external inode then it does not
 523                  * consume space here */
 524                 if (entry->e_value_inum == 0)
 525                         remain -= entry->e_value_size;
 526
 527                 entry = EXT2_EXT_ATTR_NEXT(entry);
 528         }
 529
 530         if (region_allocate(region, (char *)entry - (char *)header,
 531                             sizeof(__u32))) {
 532                 problem = PR_1_INODE_EA_ALLOC_COLLISION;
 533                 goto fix;
 534         }
 535 fix:
 536         if (region)
 537                 region_free(region);
 538         /*
 539          * it seems like a corruption. it's very unlikely we could repair
 540          * EA(s) in automatic fashion -bzzz
 541          */
 542         if (problem == 0 || !fix_problem(ctx, problem, pctx)) {
 543                 inc_ea_inode_refs(ctx, pctx,
 544                                   (struct ext2_ext_attr_entry *)start, end);
 545                 return;
 546         }
 547
 548         /* simply remove all possible EA(s) */
 549         *((__u32 *)header) = 0UL;
 550         e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
 551                                 EXT2_INODE_SIZE(sb), "pass1");
 552         ea_ibody_quota->blocks = 0;
 553         ea_ibody_quota->inodes = 0;
 554 }
 555
 556 static int check_inode_extra_negative_epoch(__u32 xtime, __u32 extra) {
 557         return (xtime & (1U << 31)) != 0 &&
 558                 (extra & EXT4_EPOCH_MASK) == EXT4_EPOCH_MASK;
 559 }
 560
 561 #define CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, xtime) \
 562         check_inode_extra_negative_epoch(inode->i_##xtime, \
 563                                          inode->i_##xtime##_extra)
 564
 565 /* When today's date is earlier than 2242, we assume that atimes,
 566  * ctimes, crtimes, and mtimes with years in the range 2310..2378 are
 567  * actually pre-1970 dates mis-encoded.
 568  */
 569 #define EXT4_EXTRA_NEGATIVE_DATE_CUTOFF 2 * (1LL << 32)
 570
 571 static void check_inode_extra_space(e2fsck_t ctx, struct problem_context *pctx,
 572                                     struct ea_quota *ea_ibody_quota)
 573 {
 574         struct ext2_super_block *sb = ctx->fs->super;
 575         struct ext2_inode_large *inode;
 576         __u32 *eamagic;
 577         int min, max;
 578
 579         ea_ibody_quota->blocks = 0;
 580         ea_ibody_quota->inodes = 0;
 581
 582         inode = (struct ext2_inode_large *) pctx->inode;
 583         if (EXT2_INODE_SIZE(sb) == EXT2_GOOD_OLD_INODE_SIZE) {
 584                 /* this isn't large inode. so, nothing to check */
 585                 return;
 586         }
 587
 588 #if 0
 589         printf("inode #%u, i_extra_size %d\n", pctx->ino,
 590                         inode->i_extra_isize);
 591 #endif
 592         /* i_extra_isize must cover i_extra_isize + i_checksum_hi at least */
 593         min = sizeof(inode->i_extra_isize) + sizeof(inode->i_checksum_hi);
 594         max = EXT2_INODE_SIZE(sb) - EXT2_GOOD_OLD_INODE_SIZE;
 595         /*
 596          * For now we will allow i_extra_isize to be 0, but really
 597          * implementations should never allow i_extra_isize to be 0
 598          */
 599         if (inode->i_extra_isize &&
 600             (inode->i_extra_isize < min || inode->i_extra_isize > max ||
 601              inode->i_extra_isize & 3)) {
 602                 if (!fix_problem(ctx, PR_1_EXTRA_ISIZE, pctx))
 603                         return;
 604                 if (inode->i_extra_isize < min || inode->i_extra_isize > max)
 605                         inode->i_extra_isize = sb->s_want_extra_isize;
 606                 else
 607                         inode->i_extra_isize = (inode->i_extra_isize + 3) & ~3;
 608                 e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
 609                                         EXT2_INODE_SIZE(sb), "pass1");
 610         }
 611
 612         /* check if there is no place for an EA header */
 613         if (inode->i_extra_isize >= max - sizeof(__u32))
 614                 return;
 615
 616         eamagic = (__u32 *) (((char *) inode) + EXT2_GOOD_OLD_INODE_SIZE +
 617                         inode->i_extra_isize);
 618         if (*eamagic == EXT2_EXT_ATTR_MAGIC) {
 619                 /* it seems inode has an extended attribute(s) in body */
 620                 check_ea_in_inode(ctx, pctx, ea_ibody_quota);
 621         }
 622
 623         /*
 624          * If the inode's extended atime (ctime, crtime, mtime) is stored in
 625          * the old, invalid format, repair it.
 626          */
 627         if (((sizeof(time_t) <= 4) ||
 628              (((sizeof(time_t) > 4) &&
 629                ctx->now < EXT4_EXTRA_NEGATIVE_DATE_CUTOFF))) &&
 630             (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, atime) ||
 631              CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, ctime) ||
 632              CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, crtime) ||
 633              CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, mtime))) {
 634
 635                 if (!fix_problem(ctx, PR_1_EA_TIME_OUT_OF_RANGE, pctx))
 636                         return;
 637
 638                 if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, atime))
 639                         inode->i_atime_extra &= ~EXT4_EPOCH_MASK;
 640                 if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, ctime))
 641                         inode->i_ctime_extra &= ~EXT4_EPOCH_MASK;
 642                 if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, crtime))
 643                         inode->i_crtime_extra &= ~EXT4_EPOCH_MASK;
 644                 if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, mtime))
 645                         inode->i_mtime_extra &= ~EXT4_EPOCH_MASK;
 646                 e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
 647                                         EXT2_INODE_SIZE(sb), "pass1");
 648         }
 649
 650 }
 651
 652 static _INLINE_ int is_blocks_used(e2fsck_t ctx, blk64_t block,
 653                                    unsigned int num)
 654 {
 655         int retval;
 656
 657         /* used to avoid duplicate output from below */
 658         retval = ext2fs_test_block_bitmap_range2_valid(ctx->block_found_map,
 659                                                        block, num);
 660         if (!retval)
 661                 return 0;
 662
 663         retval = ext2fs_test_block_bitmap_range2(ctx->block_found_map, block, num);
 664         if (retval) {
 665                 e2fsck_pass1_block_map_r_lock(ctx);
 666                 if (ctx->global_ctx)
 667                         retval = ext2fs_test_block_bitmap_range2(
 668                                         ctx->global_ctx->block_found_map, block, num);
 669                 e2fsck_pass1_block_map_r_unlock(ctx);
 670                 if (retval)
 671                         return 0;
 672         }
 673
 674         return 1;
 675 }
 676
 677 /*
 678  * Check to see if the inode might really be a directory, despite i_mode
 679  *
 680  * This is a lot of complexity for something for which I'm not really
 681  * convinced happens frequently in the wild.  If for any reason this
 682  * causes any problems, take this code out.
 683  * [tytso:20070331.0827EDT]
 684  */
 685 static void check_is_really_dir(e2fsck_t ctx, struct problem_context *pctx,
 686                                 char *buf)
 687 {
 688         struct ext2_inode *inode = pctx->inode;
 689         struct ext2_dir_entry   *dirent;
 690         errcode_t               retval;
 691         blk64_t                 blk;
 692         unsigned int            i, rec_len, not_device = 0;
 693         int                     extent_fs;
 694         int                     inlinedata_fs;
 695
 696         /*
 697          * If the mode looks OK, we believe it.  If the first block in
 698          * the i_block array is 0, this cannot be a directory. If the
 699          * inode is extent-mapped, it is still the case that the latter
 700          * cannot be 0 - the magic number in the extent header would make
 701          * it nonzero.
 702          */
 703         if (LINUX_S_ISDIR(inode->i_mode) || LINUX_S_ISREG(inode->i_mode) ||
 704             LINUX_S_ISLNK(inode->i_mode) || inode->i_block[0] == 0)
 705                 return;
 706
 707         /*
 708          * Check the block numbers in the i_block array for validity:
 709          * zero blocks are skipped (but the first one cannot be zero -
 710          * see above), other blocks are checked against the first and
 711          * max data blocks (from the the superblock) and against the
 712          * block bitmap. Any invalid block found means this cannot be
 713          * a directory.
 714          *
 715          * If there are non-zero blocks past the fourth entry, then
 716          * this cannot be a device file: we remember that for the next
 717          * check.
 718          *
 719          * For extent mapped files, we don't do any sanity checking:
 720          * just try to get the phys block of logical block 0 and run
 721          * with it.
 722          *
 723          * For inline data files, we just try to get the size of inline
 724          * data.  If it's true, we will treat it as a directory.
 725          */
 726
 727         extent_fs = ext2fs_has_feature_extents(ctx->fs->super);
 728         inlinedata_fs = ext2fs_has_feature_inline_data(ctx->fs->super);
 729         if (inlinedata_fs && (inode->i_flags & EXT4_INLINE_DATA_FL)) {
 730                 size_t size;
 731                 __u32 dotdot;
 732                 unsigned int rec_len2;
 733                 struct ext2_dir_entry de;
 734
 735                 if (ext2fs_inline_data_size(ctx->fs, pctx->ino, &size))
 736                         return;
 737                 /*
 738                  * If the size isn't a multiple of 4, it's probably not a
 739                  * directory??
 740                  */
 741                 if (size & 3)
 742                         return;
 743                 /*
 744                  * If the first 10 bytes don't look like a directory entry,
 745                  * it's probably not a directory.
 746                  */
 747                 memcpy(&dotdot, inode->i_block, sizeof(dotdot));
 748                 memcpy(&de, ((char *)inode->i_block) + EXT4_INLINE_DATA_DOTDOT_SIZE,
 749                        EXT2_DIR_REC_LEN(0));
 750                 dotdot = ext2fs_le32_to_cpu(dotdot);
 751                 de.inode = ext2fs_le32_to_cpu(de.inode);
 752                 de.rec_len = ext2fs_le16_to_cpu(de.rec_len);
 753                 ext2fs_get_rec_len(ctx->fs, &de, &rec_len2);
 754                 if (dotdot >= ctx->fs->super->s_inodes_count ||
 755                     (dotdot < EXT2_FIRST_INO(ctx->fs->super) &&
 756                      dotdot != EXT2_ROOT_INO) ||
 757                     de.inode >= ctx->fs->super->s_inodes_count ||
 758                     (de.inode < EXT2_FIRST_INO(ctx->fs->super) &&
 759                      de.inode != 0) ||
 760                     rec_len2 > EXT4_MIN_INLINE_DATA_SIZE -
 761                               EXT4_INLINE_DATA_DOTDOT_SIZE)
 762                         return;
 763                 /* device files never have a "system.data" entry */
 764                 goto isdir;
 765         } else if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) {
 766                 /* extent mapped */
 767                 if  (ext2fs_bmap2(ctx->fs, pctx->ino, inode, 0, 0, 0, 0,
 768                                  &blk))
 769                         return;
 770                 /* device files are never extent mapped */
 771                 not_device++;
 772         } else {
 773                 for (i=0; i < EXT2_N_BLOCKS; i++) {
 774                         blk = inode->i_block[i];
 775                         if (!blk)
 776                                 continue;
 777                         if (i >= 4)
 778                                 not_device++;
 779
 780                         if (blk < ctx->fs->super->s_first_data_block ||
 781                             blk >= ext2fs_blocks_count(ctx->fs->super) ||
 782                             is_blocks_used(ctx, blk, 1))
 783                                 return; /* Invalid block, can't be dir */
 784                 }
 785                 blk = inode->i_block[0];
 786         }
 787
 788         /*
 789          * If the mode says this is a device file and the i_links_count field
 790          * is sane and we have not ruled it out as a device file previously,
 791          * we declare it a device file, not a directory.
 792          */
 793         if ((LINUX_S_ISCHR(inode->i_mode) || LINUX_S_ISBLK(inode->i_mode)) &&
 794             (inode->i_links_count == 1) && !not_device)
 795                 return;
 796
 797         /* read the first block */
 798         ehandler_operation(_("reading directory block"));
 799         retval = ext2fs_read_dir_block4(ctx->fs, blk, buf, 0, pctx->ino);
 800         ehandler_operation(0);
 801         if (retval)
 802                 return;
 803
 804         dirent = (struct ext2_dir_entry *) buf;
 805         retval = ext2fs_get_rec_len(ctx->fs, dirent, &rec_len);
 806         if (retval)
 807                 return;
 808         if ((ext2fs_dirent_name_len(dirent) != 1) ||
 809             (dirent->name[0] != '.') ||
 810             (dirent->inode != pctx->ino) ||
 811             (rec_len < 12) ||
 812             (rec_len % 4) ||
 813             (rec_len >= ctx->fs->blocksize - 12))
 814                 return;
 815
 816         dirent = (struct ext2_dir_entry *) (buf + rec_len);
 817         retval = ext2fs_get_rec_len(ctx->fs, dirent, &rec_len);
 818         if (retval)
 819                 return;
 820         if ((ext2fs_dirent_name_len(dirent) != 2) ||
 821             (dirent->name[0] != '.') ||
 822             (dirent->name[1] != '.') ||
 823             (rec_len < 12) ||
 824             (rec_len % 4))
 825                 return;
 826
 827 isdir:
 828         if (fix_problem(ctx, PR_1_TREAT_AS_DIRECTORY, pctx)) {
 829                 inode->i_mode = (inode->i_mode & 07777) | LINUX_S_IFDIR;
 830                 e2fsck_write_inode_full(ctx, pctx->ino, inode,
 831                                         EXT2_INODE_SIZE(ctx->fs->super),
 832                                         "check_is_really_dir");
 833         }
 834 }
 835
 836 extern errcode_t e2fsck_setup_icount(e2fsck_t ctx, const char *icount_name,
 837                                      int flags, ext2_icount_t hint,
 838                                      ext2_icount_t *ret)
 839 {
 840         unsigned int            threshold;
 841         unsigned int            save_type;
 842         ext2_ino_t              num_dirs;
 843         errcode_t               retval;
 844         char                    *tdb_dir;
 845         int                     enable;
 846
 847         *ret = 0;
 848
 849         profile_get_string(ctx->profile, "scratch_files", "directory", 0, 0,
 850                            &tdb_dir);
 851         profile_get_uint(ctx->profile, "scratch_files",
 852                          "numdirs_threshold", 0, 0, &threshold);
 853         profile_get_boolean(ctx->profile, "scratch_files",
 854                             "icount", 0, 1, &enable);
 855
 856         retval = ext2fs_get_num_dirs(ctx->fs, &num_dirs);
 857         if (retval)
 858                 num_dirs = 1024;        /* Guess */
 859
 860         if (enable && tdb_dir && !access(tdb_dir, W_OK) &&
 861             (!threshold || num_dirs > threshold)) {
 862                 retval = ext2fs_create_icount_tdb(ctx->fs, tdb_dir,
 863                                                   flags, ret);
 864                 if (retval == 0)
 865                         return 0;
 866         }
 867         e2fsck_set_bitmap_type(ctx->fs, EXT2FS_BMAP64_RBTREE, icount_name,
 868                                &save_type);
 869         if (ctx->options & E2F_OPT_ICOUNT_FULLMAP)
 870                 flags |= EXT2_ICOUNT_OPT_FULLMAP;
 871         retval = ext2fs_create_icount2(ctx->fs, flags, 0, hint, ret);
 872         ctx->fs->default_bitmap_type = save_type;
 873         return retval;
 874 }
 875
 876 static errcode_t recheck_bad_inode_checksum(ext2_filsys fs, ext2_ino_t ino,
 877                                             e2fsck_t ctx,
 878                                             struct problem_context *pctx)
 879 {
 880         errcode_t retval;
 881         struct ext2_inode_large inode;
 882
 883         /*
 884          * Reread inode.  If we don't see checksum error, then this inode
 885          * has been fixed elsewhere.
 886          */
 887         ctx->stashed_ino = 0;
 888         retval = ext2fs_read_inode_full(fs, ino, (struct ext2_inode *)&inode,
 889                                         sizeof(inode));
 890         if (retval && retval != EXT2_ET_INODE_CSUM_INVALID)
 891                 return retval;
 892         if (!retval)
 893                 return 0;
 894
 895         /*
 896          * Checksum still doesn't match.  That implies that the inode passes
 897          * all the sanity checks, so maybe the checksum is simply corrupt.
 898          * See if the user will go for fixing that.
 899          */
 900         if (!fix_problem(ctx, PR_1_INODE_ONLY_CSUM_INVALID, pctx))
 901                 return 0;
 902
 903
 904         e2fsck_pass1_fix_lock(ctx);
 905         retval = ext2fs_write_inode_full(fs, ino, (struct ext2_inode *)&inode,
 906                                          sizeof(inode));
 907         e2fsck_pass1_fix_unlock(ctx);
 908         return retval;
 909 }
 910
 911 static void reserve_block_for_root_repair(e2fsck_t ctx)
 912 {
 913         blk64_t         blk = 0;
 914         errcode_t       err;
 915         ext2_filsys     fs = ctx->fs;
 916
 917         ctx->root_repair_block = 0;
 918         if (ext2fs_test_inode_bitmap2(ctx->inode_used_map, EXT2_ROOT_INO))
 919                 return;
 920
 921         err = ext2fs_new_block2(fs, 0, ctx->block_found_map, &blk);
 922         if (err)
 923                 return;
 924         ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
 925         ctx->root_repair_block = blk;
 926 }
 927
 928 static void reserve_block_for_lnf_repair(e2fsck_t ctx)
 929 {
 930         blk64_t         blk = 0;
 931         errcode_t       err;
 932         ext2_filsys     fs = ctx->fs;
 933         static const char name[] = "lost+found";
 934         ext2_ino_t      ino;
 935
 936         ctx->lnf_repair_block = 0;
 937         if (!ext2fs_lookup(fs, EXT2_ROOT_INO, name, sizeof(name)-1, 0, &ino))
 938                 return;
 939
 940         err = ext2fs_new_block2(fs, 0, ctx->block_found_map, &blk);
 941         if (err)
 942                 return;
 943         ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
 944         ctx->lnf_repair_block = blk;
 945         return;
 946 }
 947
 948 static errcode_t get_inline_data_ea_size(ext2_filsys fs, ext2_ino_t ino,
 949                                          size_t *sz)
 950 {
 951         void *p;
 952         struct ext2_xattr_handle *handle;
 953         errcode_t retval;
 954
 955         retval = ext2fs_xattrs_open(fs, ino, &handle);
 956         if (retval)
 957                 return retval;
 958
 959         retval = ext2fs_xattrs_read(handle);
 960         if (retval)
 961                 goto err;
 962
 963         retval = ext2fs_xattr_get(handle, "system.data", &p, sz);
 964         if (retval)
 965                 goto err;
 966         ext2fs_free_mem(&p);
 967 err:
 968         (void) ext2fs_xattrs_close(&handle);
 969         return retval;
 970 }
 971
 972 static void finish_processing_inode(e2fsck_t ctx, ext2_ino_t ino,
 973                                     struct problem_context *pctx,
 974                                     int failed_csum)
 975 {
 976         if (!failed_csum)
 977                 return;
 978
 979         /*
 980          * If the inode failed the checksum and the user didn't
 981          * clear the inode, test the checksum again -- if it still
 982          * fails, ask the user if the checksum should be corrected.
 983          */
 984         pctx->errcode = recheck_bad_inode_checksum(ctx->fs, ino, ctx, pctx);
 985         if (pctx->errcode)
 986                 ctx->flags |= E2F_FLAG_ABORT;
 987 }
 988 #define FINISH_INODE_LOOP(ctx, ino, pctx, failed_csum) \
 989         do { \
 990                 finish_processing_inode((ctx), (ino), (pctx), (failed_csum)); \
 991                 if ((ctx)->flags & E2F_FLAG_ABORT) \
 992                         return; \
 993         } while (0)
 994
 995 static int could_be_block_map(ext2_filsys fs, struct ext2_inode *inode)
 996 {
 997         __u32 x;
 998         int i;
 999
1000         for (i = 0; i < EXT2_N_BLOCKS; i++) {
1001                 x = inode->i_block[i];
1002 #ifdef WORDS_BIGENDIAN
1003                 x = ext2fs_swab32(x);
1004 #endif
1005                 if (x >= ext2fs_blocks_count(fs->super))
1006                         return 0;
1007         }
1008
1009         return 1;
1010 }
1011
1012 /*
1013  * Figure out what to do with an inode that has both extents and inline data
1014  * inode flags set.  Returns -1 if we decide to erase the inode, 0 otherwise.
1015  */
1016 static int fix_inline_data_extents_file(e2fsck_t ctx,
1017                                         ext2_ino_t ino,
1018                                         struct ext2_inode *inode,
1019                                         int inode_size,
1020                                         struct problem_context *pctx)
1021 {
1022         size_t max_inline_ea_size;
1023         ext2_filsys fs = ctx->fs;
1024         int dirty = 0;
1025
1026         /* Both feature flags not set?  Just run the regular checks */
1027         if (!ext2fs_has_feature_extents(fs->super) &&
1028             !ext2fs_has_feature_inline_data(fs->super))
1029                 return 0;
1030
1031         /* Clear both flags if it's a special file */
1032         if (LINUX_S_ISCHR(inode->i_mode) ||
1033             LINUX_S_ISBLK(inode->i_mode) ||
1034             LINUX_S_ISFIFO(inode->i_mode) ||
1035             LINUX_S_ISSOCK(inode->i_mode)) {
1036                 check_extents_inlinedata(ctx, pctx);
1037                 return 0;
1038         }
1039
1040         /* If it looks like an extent tree, try to clear inlinedata */
1041         if (ext2fs_extent_header_verify(inode->i_block,
1042                                  sizeof(inode->i_block)) == 0 &&
1043             fix_problem(ctx, PR_1_CLEAR_INLINE_DATA_FOR_EXTENT, pctx)) {
1044                 inode->i_flags &= ~EXT4_INLINE_DATA_FL;
1045                 dirty = 1;
1046                 goto out;
1047         }
1048
1049         /* If it looks short enough to be inline data, try to clear extents */
1050         if (inode_size > EXT2_GOOD_OLD_INODE_SIZE)
1051                 max_inline_ea_size = inode_size -
1052                                      (EXT2_GOOD_OLD_INODE_SIZE +
1053                                       ((struct ext2_inode_large *)inode)->i_extra_isize);
1054         else
1055                 max_inline_ea_size = 0;
1056         if (EXT2_I_SIZE(inode) <
1057             EXT4_MIN_INLINE_DATA_SIZE + max_inline_ea_size &&
1058             fix_problem(ctx, PR_1_CLEAR_EXTENT_FOR_INLINE_DATA, pctx)) {
1059                 inode->i_flags &= ~EXT4_EXTENTS_FL;
1060                 dirty = 1;
1061                 goto out;
1062         }
1063
1064         /*
1065          * Too big for inline data, but no evidence of extent tree -
1066          * maybe it's a block map file?  If the mappings all look valid?
1067          */
1068         if (could_be_block_map(fs, inode) &&
1069             fix_problem(ctx, PR_1_CLEAR_EXTENT_INLINE_DATA_FLAGS, pctx)) {
1070 #ifdef WORDS_BIGENDIAN
1071                 int i;
1072
1073                 for (i = 0; i < EXT2_N_BLOCKS; i++)
1074                         inode->i_block[i] = ext2fs_swab32(inode->i_block[i]);
1075 #endif
1076
1077                 inode->i_flags &= ~(EXT4_EXTENTS_FL | EXT4_INLINE_DATA_FL);
1078                 dirty = 1;
1079                 goto out;
1080         }
1081
1082         /* Oh well, just clear the busted inode. */
1083         if (fix_problem(ctx, PR_1_CLEAR_EXTENT_INLINE_DATA_INODE, pctx)) {
1084                 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1085                 return -1;
1086         }
1087
1088 out:
1089         if (dirty)
1090                 e2fsck_write_inode(ctx, ino, inode, "pass1");
1091
1092         return 0;
1093 }
1094
1095 static void pass1_readahead(e2fsck_t ctx, dgrp_t *group, ext2_ino_t *next_ino)
1096 {
1097         ext2_ino_t inodes_in_group = 0, inodes_per_block, inodes_per_buffer;
1098         dgrp_t start = *group, grp, grp_end = ctx->fs->group_desc_count;
1099         blk64_t blocks_to_read = 0;
1100         errcode_t err = EXT2_ET_INVALID_ARGUMENT;
1101
1102 #ifdef HAVE_PTHREAD
1103         if (ctx->fs->fs_num_threads > 1)
1104                 grp_end = ctx->thread_info.et_group_end;
1105 #endif
1106         if (ctx->readahead_kb == 0)
1107                 goto out;
1108
1109         /* Keep iterating groups until we have enough to readahead */
1110         inodes_per_block = EXT2_INODES_PER_BLOCK(ctx->fs->super);
1111         for (grp = start; grp < grp_end; grp++) {
1112                 if (ext2fs_bg_flags_test(ctx->fs, grp, EXT2_BG_INODE_UNINIT))
1113                         continue;
1114                 inodes_in_group = ctx->fs->super->s_inodes_per_group -
1115                                         ext2fs_bg_itable_unused(ctx->fs, grp);
1116                 blocks_to_read += (inodes_in_group + inodes_per_block - 1) /
1117                                         inodes_per_block;
1118                 if (blocks_to_read * ctx->fs->blocksize >
1119                     ctx->readahead_kb * 1024)
1120                         break;
1121         }
1122
1123         err = e2fsck_readahead(ctx->fs, E2FSCK_READA_ITABLE, start,
1124                                grp - start + 1);
1125         if (err == EAGAIN) {
1126                 ctx->readahead_kb /= 2;
1127                 err = 0;
1128         }
1129
1130 out:
1131         if (err) {
1132                 /* Error; disable itable readahead */
1133                 *group = ctx->fs->group_desc_count;
1134                 *next_ino = ctx->fs->super->s_inodes_count;
1135         } else {
1136                 /*
1137                  * Don't do more readahead until we've reached the first inode
1138                  * of the last inode scan buffer block for the last group.
1139                  */
1140                 *group = grp + 1;
1141                 inodes_per_buffer = (ctx->inode_buffer_blocks ?
1142                                      ctx->inode_buffer_blocks :
1143                                      EXT2_INODE_SCAN_DEFAULT_BUFFER_BLOCKS) *
1144                                     ctx->fs->blocksize /
1145                                     EXT2_INODE_SIZE(ctx->fs->super);
1146                 inodes_in_group--;
1147                 *next_ino = inodes_in_group -
1148                             (inodes_in_group % inodes_per_buffer) + 1 +
1149                             (grp * ctx->fs->super->s_inodes_per_group);
1150         }
1151 }
1152
1153 /*
1154  * Check if the passed ino is one of the used superblock quota inodes.
1155  *
1156  * Before the quota inodes were journaled, older superblock quota inodes
1157  * were just regular files in the filesystem and not reserved inodes.  This
1158  * checks if the passed ino is one of the s_*_quota_inum superblock fields,
1159  * which may not always be the same as the EXT4_*_QUOTA_INO fields.
1160  */
1161 static int quota_inum_is_super(struct ext2_super_block *sb, ext2_ino_t ino)
1162 {
1163         enum quota_type qtype;
1164
1165         for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1166                 if (*quota_sb_inump(sb, qtype) == ino)
1167                         return 1;
1168
1169         return 0;
1170 }
1171
1172 /*
1173  * Check if the passed ino is one of the reserved quota inodes.
1174  * This checks if the inode number is one of the reserved EXT4_*_QUOTA_INO
1175  * inodes.  These inodes may or may not be in use by the quota feature.
1176  */
1177 static int quota_inum_is_reserved(ext2_filsys fs, ext2_ino_t ino)
1178 {
1179         enum quota_type qtype;
1180
1181         for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1182                 if (quota_type2inum(qtype, fs->super) == ino)
1183                         return 1;
1184
1185         return 0;
1186 }
1187
1188 static int e2fsck_should_abort(e2fsck_t ctx)
1189 {
1190         e2fsck_t global_ctx;
1191
1192         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1193                 return 1;
1194
1195         if (ctx->global_ctx) {
1196                 global_ctx = ctx->global_ctx;
1197                 if (global_ctx->flags & E2F_FLAG_SIGNAL_MASK)
1198                         return 1;
1199         }
1200         return 0;
1201 }
1202
1203 static void init_ext2_max_sizes()
1204 {
1205         int     i;
1206         __u64   max_sizes;
1207
1208         /*
1209          * Init ext2_max_sizes which will be immutable and shared between
1210          * threads
1211          */
1212 #define EXT2_BPP(bits) (1ULL << ((bits) - 2))
1213
1214         for (i = EXT2_MIN_BLOCK_LOG_SIZE; i <= EXT2_MAX_BLOCK_LOG_SIZE; i++) {
1215                 max_sizes = EXT2_NDIR_BLOCKS + EXT2_BPP(i);
1216                 max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i);
1217                 max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i) * EXT2_BPP(i);
1218                 max_sizes = (max_sizes * (1UL << i));
1219                 ext2_max_sizes[i - EXT2_MIN_BLOCK_LOG_SIZE] = max_sizes;
1220         }
1221 #undef EXT2_BPP
1222 }
1223
1224 #ifdef HAVE_PTHREAD
1225 /* TODO: tdb needs to be handled properly for multiple threads*/
1226 static int multiple_threads_supported(e2fsck_t ctx)
1227 {
1228 #ifdef  CONFIG_TDB
1229         unsigned int            threshold;
1230         ext2_ino_t              num_dirs;
1231         errcode_t               retval;
1232         char                    *tdb_dir;
1233         int                     enable;
1234
1235         profile_get_string(ctx->profile, "scratch_files", "directory", 0, 0,
1236                            &tdb_dir);
1237         profile_get_uint(ctx->profile, "scratch_files",
1238                          "numdirs_threshold", 0, 0, &threshold);
1239         profile_get_boolean(ctx->profile, "scratch_files",
1240                             "icount", 0, 1, &enable);
1241
1242         retval = ext2fs_get_num_dirs(ctx->fs, &num_dirs);
1243         if (retval)
1244                 num_dirs = 1024;        /* Guess */
1245
1246         /* tdb is unsupported now */
1247         if (enable && tdb_dir && !access(tdb_dir, W_OK) &&
1248             (!threshold || num_dirs > threshold))
1249                 return 0;
1250 #endif
1251         return 1;
1252 }
1253
1254 /**
1255  * Even though we could specify number of threads,
1256  * but it might be more than the whole filesystem
1257  * block groups, correct it here.
1258  */
1259 static void e2fsck_pass1_set_thread_num(e2fsck_t ctx)
1260 {
1261         unsigned flexbg_size = 1;
1262         ext2_filsys fs = ctx->fs;
1263         int num_threads = ctx->fs_num_threads;
1264         int max_threads;
1265
1266         if (num_threads < 1) {
1267                 num_threads = 1;
1268                 goto out;
1269         }
1270
1271         if (!multiple_threads_supported(ctx)) {
1272                 num_threads = 1;
1273                 fprintf(stderr, "Fall through single thread for pass1 "
1274                         "because tdb could not handle properly\n");
1275                 goto out;
1276         }
1277
1278         if (ext2fs_has_feature_flex_bg(fs->super))
1279                 flexbg_size = 1 << fs->super->s_log_groups_per_flex;
1280         max_threads = fs->group_desc_count / flexbg_size;
1281         if (max_threads == 0)
1282                 max_threads = 1;
1283
1284         if (num_threads > max_threads) {
1285                 fprintf(stderr, "Use max possible thread num: %d instead\n",
1286                                 max_threads);
1287                 num_threads = max_threads;
1288         }
1289 out:
1290         ctx->fs_num_threads = num_threads;
1291         ctx->fs->fs_num_threads = num_threads;
1292 }
1293 #endif
1294
1295 /*
1296  * We need call mark_table_blocks() before multiple
1297  * thread start, since all known system blocks should be
1298  * marked and checked later.
1299  */
1300 static errcode_t e2fsck_pass1_prepare(e2fsck_t ctx)
1301 {
1302         struct problem_context pctx;
1303         ext2_filsys fs = ctx->fs;
1304         unsigned long long readahead_kb;
1305
1306         init_ext2_max_sizes();
1307 #ifdef HAVE_PTHREAD
1308         e2fsck_pass1_set_thread_num(ctx);
1309 #endif
1310         /* If we can do readahead, figure out how many groups to pull in. */
1311         if (!e2fsck_can_readahead(ctx->fs))
1312                 ctx->readahead_kb = 0;
1313         else if (ctx->readahead_kb == ~0ULL)
1314                 ctx->readahead_kb = e2fsck_guess_readahead(ctx->fs);
1315
1316 #ifdef HAVE_PTHREAD
1317         /* don't use more than 1/10 of memory for threads checking */
1318         readahead_kb = get_memory_size() / (10 * ctx->fs_num_threads);
1319         /* maybe better disable RA if this is too small? */
1320         if (ctx->readahead_kb > readahead_kb)
1321                 ctx->readahead_kb = readahead_kb;
1322 #endif
1323         clear_problem_context(&pctx);
1324         if (!(ctx->options & E2F_OPT_PREEN))
1325                 fix_problem(ctx, PR_1_PASS_HEADER, &pctx);
1326
1327         pctx.errcode = e2fsck_allocate_subcluster_bitmap(ctx->fs,
1328                         _("in-use block map"), EXT2FS_BMAP64_RBTREE,
1329                         "block_found_map", &ctx->block_found_map);
1330         if (pctx.errcode) {
1331                 pctx.num = 1;
1332                 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
1333                 ctx->flags |= E2F_FLAG_ABORT;
1334                 return pctx.errcode;
1335         }
1336         pctx.errcode = e2fsck_allocate_block_bitmap(ctx->fs,
1337                         _("metadata block map"), EXT2FS_BMAP64_RBTREE,
1338                         "block_metadata_map", &ctx->block_metadata_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
1346         mark_table_blocks(ctx);
1347         pctx.errcode = ext2fs_convert_subcluster_bitmap(ctx->fs,
1348                                                 &ctx->block_found_map);
1349         if (pctx.errcode) {
1350                 fix_problem(ctx, PR_1_CONVERT_SUBCLUSTER, &pctx);
1351                 ctx->flags |= E2F_FLAG_ABORT;
1352                 return pctx.errcode;
1353         }
1354
1355         pctx.errcode = e2fsck_allocate_block_bitmap(ctx->fs,
1356                         _("multiply claimed block map"),
1357                         EXT2FS_BMAP64_RBTREE, "block_dup_map",
1358                         &ctx->block_dup_map);
1359         if (pctx.errcode) {
1360                 pctx.num = 3;
1361                 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR,
1362                             &pctx);
1363                 /* Should never get here */
1364                 ctx->flags |= E2F_FLAG_ABORT;
1365                 return pctx.errcode;
1366         }
1367
1368         if (ext2fs_has_feature_mmp(fs->super) &&
1369             fs->super->s_mmp_block > fs->super->s_first_data_block &&
1370             fs->super->s_mmp_block < ext2fs_blocks_count(fs->super))
1371                 ext2fs_mark_block_bitmap2(ctx->block_found_map,
1372                                           fs->super->s_mmp_block);
1373 #ifdef  HAVE_PTHREAD
1374         pthread_mutex_init(&ctx->fs_fix_mutex, NULL);
1375         pthread_rwlock_init(&ctx->fs_block_map_rwlock, NULL);
1376 #endif
1377
1378         return 0;
1379 }
1380
1381 static void e2fsck_pass1_post(e2fsck_t ctx)
1382 {
1383         struct problem_context pctx;
1384         ext2_filsys fs = ctx->fs;
1385
1386         char *block_buf =
1387                 (char *)e2fsck_allocate_memory(ctx, ctx->fs->blocksize * 3,
1388                                               "block interate buffer");
1389         reserve_block_for_root_repair(ctx);
1390         reserve_block_for_lnf_repair(ctx);
1391
1392         /*
1393          * If any extended attribute blocks' reference counts need to
1394          * be adjusted, either up (ctx->refcount_extra), or down
1395          * (ctx->refcount), then fix them.
1396          */
1397         if (ctx->refcount) {
1398                 adjust_extattr_refcount(ctx, ctx->refcount, block_buf, -1);
1399                 ea_refcount_free(ctx->refcount);
1400                 ctx->refcount = 0;
1401         }
1402         if (ctx->refcount_extra) {
1403                 adjust_extattr_refcount(ctx, ctx->refcount_extra,
1404                                         block_buf, +1);
1405                 ea_refcount_free(ctx->refcount_extra);
1406                 ctx->refcount_extra = 0;
1407         }
1408
1409         if (ctx->invalid_bitmaps)
1410                 handle_fs_bad_blocks(ctx);
1411
1412         /* We don't need the block_ea_map any more */
1413         if (ctx->block_ea_map) {
1414                 ext2fs_free_block_bitmap(ctx->block_ea_map);
1415                 ctx->block_ea_map = 0;
1416         }
1417
1418         if (ctx->flags & E2F_FLAG_RESIZE_INODE) {
1419                 struct ext2_inode *inode;
1420                 int inode_size = EXT2_INODE_SIZE(fs->super);
1421                 inode = e2fsck_allocate_memory(ctx, inode_size,
1422                                                "scratch inode");
1423
1424                 clear_problem_context(&pctx);
1425                 pctx.errcode = ext2fs_create_resize_inode(fs);
1426                 if (pctx.errcode) {
1427                         if (!fix_problem(ctx, PR_1_RESIZE_INODE_CREATE,
1428                                          &pctx)) {
1429                                 ctx->flags |= E2F_FLAG_ABORT;
1430                                 ext2fs_free_mem(&inode);
1431                                 ext2fs_free_mem(&block_buf);
1432                                 return;
1433                         }
1434                         pctx.errcode = 0;
1435                 }
1436                 if (!pctx.errcode) {
1437                         e2fsck_read_inode(ctx, EXT2_RESIZE_INO, inode,
1438                                           "recreate inode");
1439                         inode->i_mtime = ctx->now;
1440                         e2fsck_write_inode(ctx, EXT2_RESIZE_INO, inode,
1441                                            "recreate inode");
1442                 }
1443                 ctx->flags &= ~E2F_FLAG_RESIZE_INODE;
1444                 ext2fs_free_mem(&inode);
1445         }
1446
1447         if (ctx->flags & E2F_FLAG_RESTART) {
1448                 ext2fs_free_mem(&block_buf);
1449                 return;
1450         }
1451
1452         if (ctx->block_dup_map) {
1453                 if (!(ctx->flags & E2F_FLAG_DUP_BLOCK)) {
1454                         ext2fs_free_mem(&block_buf);
1455                         return;
1456                 }
1457                 if (ctx->options & E2F_OPT_PREEN) {
1458                         clear_problem_context(&pctx);
1459                         fix_problem(ctx, PR_1_DUP_BLOCKS_PREENSTOP, &pctx);
1460                 }
1461                 e2fsck_pass1_dupblocks(ctx, block_buf);
1462                 ext2fs_free_mem(&block_buf);
1463                 ctx->flags &= ~E2F_FLAG_DUP_BLOCK;
1464         }
1465 }
1466
1467
1468 void e2fsck_pass1_run(e2fsck_t ctx)
1469 {
1470         int     i;
1471         ext2_filsys fs = ctx->fs;
1472         ext2_ino_t      ino = 0;
1473         struct ext2_inode *inode = NULL;
1474         ext2_inode_scan scan = NULL;
1475         char            *block_buf = NULL;
1476 #ifdef RESOURCE_TRACK
1477         struct resource_track   rtrack;
1478 #endif
1479         unsigned char   frag, fsize;
1480         struct          problem_context pctx;
1481         struct          scan_callback_struct scan_struct;
1482         struct ext2_super_block *sb = ctx->fs->super;
1483         const char      *old_op;
1484         const char      *eop_next_inode = _("getting next inode from scan");
1485         int             imagic_fs, extent_fs, inlinedata_fs, casefold_fs;
1486         int             low_dtime_check = 1;
1487         unsigned int    inode_size = EXT2_INODE_SIZE(fs->super);
1488         unsigned int    bufsize;
1489         int             failed_csum = 0;
1490         ext2_ino_t      ino_threshold = 0;
1491         dgrp_t          ra_group = 0;
1492         struct ea_quota ea_ibody_quota;
1493         struct process_inode_block *inodes_to_process;
1494         int             process_inode_count;
1495
1496         init_resource_track(&rtrack, ctx->fs->io);
1497         clear_problem_context(&pctx);
1498
1499         pass1_readahead(ctx, &ra_group, &ino_threshold);
1500         if (ext2fs_has_feature_dir_index(fs->super) &&
1501             !(ctx->options & E2F_OPT_NO)) {
1502                 if (ext2fs_u32_list_create(&ctx->dirs_to_hash, 50))
1503                         ctx->dirs_to_hash = 0;
1504         }
1505
1506 #ifdef MTRACE
1507         mtrace_print("Pass 1");
1508 #endif
1509
1510         imagic_fs = ext2fs_has_feature_imagic_inodes(sb);
1511         extent_fs = ext2fs_has_feature_extents(sb);
1512         inlinedata_fs = ext2fs_has_feature_inline_data(sb);
1513         casefold_fs = ext2fs_has_feature_casefold(sb);
1514
1515         /*
1516          * Allocate bitmaps structures
1517          */
1518         pctx.errcode = e2fsck_allocate_inode_bitmap(fs, _("in-use inode map"),
1519                                                     EXT2FS_BMAP64_RBTREE,
1520                                                     "inode_used_map",
1521                                                     &ctx->inode_used_map);
1522         if (pctx.errcode) {
1523                 pctx.num = 1;
1524                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1525                 ctx->flags |= E2F_FLAG_ABORT;
1526                 return;
1527         }
1528         pctx.errcode = e2fsck_allocate_inode_bitmap(fs,
1529                         _("directory inode map"),
1530                         ctx->global_ctx ? EXT2FS_BMAP64_RBTREE :
1531                         EXT2FS_BMAP64_AUTODIR,
1532                         "inode_dir_map", &ctx->inode_dir_map);
1533         if (pctx.errcode) {
1534                 pctx.num = 2;
1535                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1536                 ctx->flags |= E2F_FLAG_ABORT;
1537                 return;
1538         }
1539         pctx.errcode = e2fsck_allocate_inode_bitmap(fs,
1540                         _("regular file inode map"), EXT2FS_BMAP64_RBTREE,
1541                         "inode_reg_map", &ctx->inode_reg_map);
1542         if (pctx.errcode) {
1543                 pctx.num = 6;
1544                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1545                 ctx->flags |= E2F_FLAG_ABORT;
1546                 return;
1547         }
1548         if (casefold_fs) {
1549                 pctx.errcode =
1550                         e2fsck_allocate_inode_bitmap(fs,
1551                                                      _("inode casefold map"),
1552                                                      EXT2FS_BMAP64_RBTREE,
1553                                                      "inode_casefold_map",
1554                                                      &ctx->inode_casefold_map);
1555                 if (pctx.errcode) {
1556                         pctx.num = 1;
1557                         fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1558                         ctx->flags |= E2F_FLAG_ABORT;
1559                         return;
1560                 }
1561         }
1562         pctx.errcode = e2fsck_setup_icount(ctx, "inode_link_info", 0, NULL,
1563                                            &ctx->inode_link_info);
1564         if (pctx.errcode) {
1565                 fix_problem(ctx, PR_1_ALLOCATE_ICOUNT, &pctx);
1566                 ctx->flags |= E2F_FLAG_ABORT;
1567                 return;
1568         }
1569         bufsize = inode_size;
1570         if (bufsize < sizeof(struct ext2_inode_large))
1571                 bufsize = sizeof(struct ext2_inode_large);
1572         inode = (struct ext2_inode *)
1573                 e2fsck_allocate_memory(ctx, bufsize, "scratch inode");
1574
1575         inodes_to_process = (struct process_inode_block *)
1576                 e2fsck_allocate_memory(ctx,
1577                                        (ctx->process_inode_size *
1578                                         sizeof(struct process_inode_block)),
1579                                        "array of inodes to process");
1580         process_inode_count = 0;
1581
1582         pctx.errcode = ext2fs_init_dblist(fs, 0);
1583         if (pctx.errcode) {
1584                 fix_problem(ctx, PR_1_ALLOCATE_DBCOUNT, &pctx);
1585                 ctx->flags |= E2F_FLAG_ABORT;
1586                 goto endit;
1587         }
1588
1589         /*
1590          * If the last orphan field is set, clear it, since the pass1
1591          * processing will automatically find and clear the orphans.
1592          * In the future, we may want to try using the last_orphan
1593          * linked list ourselves, but for now, we clear it so that the
1594          * ext3 mount code won't get confused.
1595          */
1596         if (!(ctx->options & E2F_OPT_READONLY)) {
1597                 if (fs->super->s_last_orphan) {
1598                         fs->super->s_last_orphan = 0;
1599                         ext2fs_mark_super_dirty(fs);
1600                 }
1601         }
1602
1603         block_buf = (char *) e2fsck_allocate_memory(ctx, fs->blocksize * 3,
1604                                                     "block interate buffer");
1605         if (EXT2_INODE_SIZE(fs->super) == EXT2_GOOD_OLD_INODE_SIZE)
1606                 e2fsck_use_inode_shortcuts(ctx, 1);
1607         e2fsck_intercept_block_allocations(ctx);
1608         old_op = ehandler_operation(_("opening inode scan"));
1609         pctx.errcode = ext2fs_open_inode_scan(fs, ctx->inode_buffer_blocks,
1610                                               &scan);
1611         ehandler_operation(old_op);
1612         if (pctx.errcode) {
1613                 fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx);
1614                 ctx->flags |= E2F_FLAG_ABORT;
1615                 goto endit;
1616         }
1617         ext2fs_inode_scan_flags(scan, EXT2_SF_SKIP_MISSING_ITABLE |
1618                                       EXT2_SF_WARN_GARBAGE_INODES, 0);
1619         ctx->stashed_inode = inode;
1620         scan_struct.ctx = ctx;
1621         scan_struct.block_buf = block_buf;
1622         scan_struct.inodes_to_process = inodes_to_process;
1623         scan_struct.process_inode_count = &process_inode_count;
1624         ext2fs_set_inode_callback(scan, scan_callback, &scan_struct);
1625         if (ctx->progress && ((ctx->progress)(ctx, 1, 0,
1626                                               ctx->fs->group_desc_count)))
1627                 goto endit;
1628         if ((fs->super->s_wtime &&
1629              fs->super->s_wtime < fs->super->s_inodes_count) ||
1630             (fs->super->s_mtime &&
1631              fs->super->s_mtime < fs->super->s_inodes_count) ||
1632             (fs->super->s_mkfs_time &&
1633              fs->super->s_mkfs_time < fs->super->s_inodes_count))
1634                 low_dtime_check = 0;
1635
1636         /* Set up ctx->lost_and_found if possible */
1637         (void) e2fsck_get_lost_and_found(ctx, 0);
1638
1639 #ifdef HAVE_PTHREAD
1640         if (ctx->global_ctx) {
1641                 if (ctx->options & E2F_OPT_DEBUG &&
1642                     ctx->options & E2F_OPT_MULTITHREAD)
1643                         fprintf(stderr, "thread %d jumping to group %d\n",
1644                                         ctx->thread_info.et_thread_index,
1645                                         ctx->thread_info.et_group_start);
1646                 pctx.errcode = ext2fs_inode_scan_goto_blockgroup(scan,
1647                                         ctx->thread_info.et_group_start);
1648                 if (pctx.errcode) {
1649                         fix_problem(ctx, PR_1_PASS_HEADER, &pctx);
1650                         ctx->flags |= E2F_FLAG_ABORT;
1651                         goto endit;
1652                 }
1653         }
1654 #endif
1655
1656         while (1) {
1657                 if (ino % (fs->super->s_inodes_per_group * 4) == 1) {
1658                         if (e2fsck_mmp_update(fs))
1659                                 fatal_error(ctx, 0);
1660                 }
1661                 old_op = ehandler_operation(eop_next_inode);
1662                 pctx.errcode = ext2fs_get_next_inode_full(scan, &ino,
1663                                                           inode, inode_size);
1664                 if (ino > ino_threshold)
1665                         pass1_readahead(ctx, &ra_group, &ino_threshold);
1666                 ehandler_operation(old_op);
1667                 if (e2fsck_should_abort(ctx))
1668                         goto endit;
1669                 if (pctx.errcode == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE) {
1670                         /*
1671                          * If badblocks says badblocks is bad, offer to clear
1672                          * the list, update the in-core bb list, and restart
1673                          * the inode scan.
1674                          */
1675                         if (ino == EXT2_BAD_INO &&
1676                             fix_problem(ctx, PR_1_BADBLOCKS_IN_BADBLOCKS,
1677                                         &pctx)) {
1678                                 errcode_t err;
1679
1680                                 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1681                                 ext2fs_badblocks_list_free(ctx->fs->badblocks);
1682                                 ctx->fs->badblocks = NULL;
1683                                 err = ext2fs_read_bb_inode(ctx->fs,
1684                                                         &ctx->fs->badblocks);
1685                                 if (err) {
1686                                         fix_problem(ctx, PR_1_ISCAN_ERROR,
1687                                                     &pctx);
1688                                         ctx->flags |= E2F_FLAG_ABORT;
1689                                 } else
1690                                         ctx->flags |= E2F_FLAG_RESTART;
1691                                 goto endit;
1692                         }
1693                         if (!ctx->inode_bb_map)
1694                                 alloc_bb_map(ctx);
1695                         ext2fs_mark_inode_bitmap2(ctx->inode_bb_map, ino);
1696                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1697                         continue;
1698                 }
1699                 if (pctx.errcode == EXT2_ET_SCAN_FINISHED)
1700                         break;
1701                 if (pctx.errcode &&
1702                     pctx.errcode != EXT2_ET_INODE_CSUM_INVALID &&
1703                     pctx.errcode != EXT2_ET_INODE_IS_GARBAGE) {
1704                         fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx);
1705                         ctx->flags |= E2F_FLAG_ABORT;
1706                         goto endit;
1707                 }
1708                 if (!ino)
1709                         break;
1710 #ifdef HAVE_PTHREAD
1711                 if (ctx->global_ctx)
1712                         ctx->thread_info.et_inode_number++;
1713 #endif
1714                 pctx.ino = ino;
1715                 pctx.inode = inode;
1716                 ctx->stashed_ino = ino;
1717
1718                 /* Clear trashed inode? */
1719                 if (pctx.errcode == EXT2_ET_INODE_IS_GARBAGE &&
1720                     inode->i_links_count > 0 &&
1721                     fix_problem(ctx, PR_1_INODE_IS_GARBAGE, &pctx)) {
1722                         pctx.errcode = 0;
1723                         e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1724                 }
1725                 failed_csum = pctx.errcode != 0;
1726
1727                 /*
1728                  * Check for inodes who might have been part of the
1729                  * orphaned list linked list.  They should have gotten
1730                  * dealt with by now, unless the list had somehow been
1731                  * corrupted.
1732                  *
1733                  * FIXME: In the future, inodes which are still in use
1734                  * (and which are therefore) pending truncation should
1735                  * be handled specially.  Right now we just clear the
1736                  * dtime field, and the normal e2fsck handling of
1737                  * inodes where i_size and the inode blocks are
1738                  * inconsistent is to fix i_size, instead of releasing
1739                  * the extra blocks.  This won't catch the inodes that
1740                  * was at the end of the orphan list, but it's better
1741                  * than nothing.  The right answer is that there
1742                  * shouldn't be any bugs in the orphan list handling.  :-)
1743                  */
1744                 if (inode->i_dtime && low_dtime_check &&
1745                     inode->i_dtime < ctx->fs->super->s_inodes_count) {
1746                         if (fix_problem(ctx, PR_1_LOW_DTIME, &pctx)) {
1747                                 inode->i_dtime = inode->i_links_count ?
1748                                         0 : ctx->now;
1749                                 e2fsck_write_inode(ctx, ino, inode,
1750                                                    "pass1");
1751                                 failed_csum = 0;
1752                         }
1753                 }
1754
1755                 if (inode->i_links_count) {
1756                         pctx.errcode = ext2fs_icount_store(ctx->inode_link_info,
1757                                            ino, inode->i_links_count);
1758                         if (pctx.errcode) {
1759                                 pctx.num = inode->i_links_count;
1760                                 fix_problem(ctx, PR_1_ICOUNT_STORE, &pctx);
1761                                 ctx->flags |= E2F_FLAG_ABORT;
1762                                 goto endit;
1763                         }
1764                 } else if ((ino >= EXT2_FIRST_INODE(fs->super)) &&
1765                            !quota_inum_is_reserved(fs, ino)) {
1766                         if (!inode->i_dtime && inode->i_mode) {
1767                                 if (fix_problem(ctx,
1768                                             PR_1_ZERO_DTIME, &pctx)) {
1769                                         inode->i_dtime = ctx->now;
1770                                         e2fsck_write_inode(ctx, ino, inode,
1771                                                            "pass1");
1772                                         failed_csum = 0;
1773                                 }
1774                         }
1775                         FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1776                         continue;
1777                 }
1778
1779                 if ((inode->i_flags & EXT4_CASEFOLD_FL) &&
1780                     ((!LINUX_S_ISDIR(inode->i_mode) &&
1781                       fix_problem(ctx, PR_1_CASEFOLD_NONDIR, &pctx)) ||
1782                      (!casefold_fs &&
1783                       fix_problem(ctx, PR_1_CASEFOLD_FEATURE, &pctx)))) {
1784                         inode->i_flags &= ~EXT4_CASEFOLD_FL;
1785                         e2fsck_write_inode(ctx, ino, inode, "pass1");
1786                 }
1787
1788                 /* Conflicting inlinedata/extents inode flags? */
1789                 if ((inode->i_flags & EXT4_INLINE_DATA_FL) &&
1790                     (inode->i_flags & EXT4_EXTENTS_FL)) {
1791                         int res = fix_inline_data_extents_file(ctx, ino, inode,
1792                                                                inode_size,
1793                                                                &pctx);
1794                         if (res < 0) {
1795                                 /* skip FINISH_INODE_LOOP */
1796                                 continue;
1797                         }
1798                 }
1799
1800                 /* Test for incorrect inline_data flags settings. */
1801                 if ((inode->i_flags & EXT4_INLINE_DATA_FL) && !inlinedata_fs &&
1802                     (ino >= EXT2_FIRST_INODE(fs->super))) {
1803                         size_t size = 0;
1804
1805                         pctx.errcode = get_inline_data_ea_size(fs, ino, &size);
1806                         if (!pctx.errcode &&
1807                             fix_problem(ctx, PR_1_INLINE_DATA_FEATURE, &pctx)) {
1808                                 e2fsck_pass1_fix_lock(ctx);
1809                                 ext2fs_set_feature_inline_data(sb);
1810                                 ext2fs_mark_super_dirty(fs);
1811                                 e2fsck_pass1_fix_unlock(ctx);
1812                                 inlinedata_fs = 1;
1813                         } else if (fix_problem(ctx, PR_1_INLINE_DATA_SET, &pctx)) {
1814                                 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1815                                 /* skip FINISH_INODE_LOOP */
1816                                 continue;
1817                         }
1818                 }
1819
1820                 /* Test for inline data flag but no attr */
1821                 if ((inode->i_flags & EXT4_INLINE_DATA_FL) && inlinedata_fs &&
1822                     (ino >= EXT2_FIRST_INODE(fs->super))) {
1823                         size_t size = 0;
1824                         errcode_t err;
1825                         int flags;
1826
1827                         flags = fs->flags;
1828                         if (failed_csum)
1829                                 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
1830                         err = get_inline_data_ea_size(fs, ino, &size);
1831                         fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
1832                                     (fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
1833
1834                         switch (err) {
1835                         case 0:
1836                                 /* Everything is awesome... */
1837                                 break;
1838                         case EXT2_ET_BAD_EA_BLOCK_NUM:
1839                         case EXT2_ET_BAD_EA_HASH:
1840                         case EXT2_ET_BAD_EA_HEADER:
1841                         case EXT2_ET_EA_BAD_NAME_LEN:
1842                         case EXT2_ET_EA_BAD_VALUE_SIZE:
1843                         case EXT2_ET_EA_KEY_NOT_FOUND:
1844                         case EXT2_ET_EA_NO_SPACE:
1845                         case EXT2_ET_MISSING_EA_FEATURE:
1846                         case EXT2_ET_INLINE_DATA_CANT_ITERATE:
1847                         case EXT2_ET_INLINE_DATA_NO_BLOCK:
1848                         case EXT2_ET_INLINE_DATA_NO_SPACE:
1849                         case EXT2_ET_NO_INLINE_DATA:
1850                         case EXT2_ET_EXT_ATTR_CSUM_INVALID:
1851                         case EXT2_ET_EA_BAD_VALUE_OFFSET:
1852                         case EXT2_ET_EA_INODE_CORRUPTED:
1853                                 /* broken EA or no system.data EA; truncate */
1854                                 if (fix_problem(ctx, PR_1_INLINE_DATA_NO_ATTR,
1855                                                 &pctx)) {
1856                                         err = ext2fs_inode_size_set(fs, inode, 0);
1857                                         if (err) {
1858                                                 pctx.errcode = err;
1859                                                 ctx->flags |= E2F_FLAG_ABORT;
1860                                                 goto endit;
1861                                         }
1862                                         inode->i_flags &= ~EXT4_INLINE_DATA_FL;
1863                                         memset(&inode->i_block, 0,
1864                                                sizeof(inode->i_block));
1865                                         e2fsck_write_inode(ctx, ino, inode,
1866                                                            "pass1");
1867                                         failed_csum = 0;
1868                                 }
1869                                 break;
1870                         default:
1871                                 /* Some other kind of non-xattr error? */
1872                                 pctx.errcode = err;
1873                                 ctx->flags |= E2F_FLAG_ABORT;
1874                                 goto endit;
1875                         }
1876                 }
1877
1878                 /*
1879                  * Test for incorrect extent flag settings.
1880                  *
1881                  * On big-endian machines we must be careful:
1882                  * When the inode is read, the i_block array is not swapped
1883                  * if the extent flag is set.  Therefore if we are testing
1884                  * for or fixing a wrongly-set flag, we must potentially
1885                  * (un)swap before testing, or after fixing.
1886                  */
1887
1888                 /*
1889                  * In this case the extents flag was set when read, so
1890                  * extent_header_verify is ok.  If the inode is cleared,
1891                  * no need to swap... so no extra swapping here.
1892                  */
1893                 if ((inode->i_flags & EXT4_EXTENTS_FL) && !extent_fs &&
1894                     (inode->i_links_count || (ino == EXT2_BAD_INO) ||
1895                      (ino == EXT2_ROOT_INO) || (ino == EXT2_JOURNAL_INO))) {
1896                         if ((ext2fs_extent_header_verify(inode->i_block,
1897                                                  sizeof(inode->i_block)) == 0) &&
1898                             fix_problem(ctx, PR_1_EXTENT_FEATURE, &pctx)) {
1899                                 e2fsck_pass1_fix_lock(ctx);
1900                                 ext2fs_set_feature_extents(sb);
1901                                 ext2fs_mark_super_dirty(fs);
1902                                 extent_fs = 1;
1903                                 e2fsck_pass1_fix_unlock(ctx);
1904                         } else if (fix_problem(ctx, PR_1_EXTENTS_SET, &pctx)) {
1905                         clear_inode:
1906                                 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1907                                 if (ino == EXT2_BAD_INO)
1908                                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map,
1909                                                                  ino);
1910                                 /* skip FINISH_INODE_LOOP */
1911                                 continue;
1912                         }
1913                 }
1914
1915                 /*
1916                  * For big-endian machines:
1917                  * If the inode didn't have the extents flag set when it
1918                  * was read, then the i_blocks array was swapped.  To test
1919                  * as an extents header, we must swap it back first.
1920                  * IF we then set the extents flag, the entire i_block
1921                  * array must be un/re-swapped to make it proper extents data.
1922                  */
1923                 if (extent_fs && !(inode->i_flags & EXT4_EXTENTS_FL) &&
1924                     (inode->i_links_count || (ino == EXT2_BAD_INO) ||
1925                      (ino == EXT2_ROOT_INO) || (ino == EXT2_JOURNAL_INO)) &&
1926                     (LINUX_S_ISREG(inode->i_mode) ||
1927                      LINUX_S_ISDIR(inode->i_mode))) {
1928                         void *ehp;
1929 #ifdef WORDS_BIGENDIAN
1930                         __u32 tmp_block[EXT2_N_BLOCKS];
1931
1932                         for (i = 0; i < EXT2_N_BLOCKS; i++)
1933                                 tmp_block[i] = ext2fs_swab32(inode->i_block[i]);
1934                         ehp = tmp_block;
1935 #else
1936                         ehp = inode->i_block;
1937 #endif
1938                         if ((ext2fs_extent_header_verify(ehp,
1939                                          sizeof(inode->i_block)) == 0) &&
1940                             (fix_problem(ctx, PR_1_UNSET_EXTENT_FL, &pctx))) {
1941                                 inode->i_flags |= EXT4_EXTENTS_FL;
1942 #ifdef WORDS_BIGENDIAN
1943                                 memcpy(inode->i_block, tmp_block,
1944                                        sizeof(inode->i_block));
1945 #endif
1946                                 e2fsck_write_inode(ctx, ino, inode, "pass1");
1947                                 failed_csum = 0;
1948                         }
1949                 }
1950
1951                 if (ino == EXT2_BAD_INO) {
1952                         struct process_block_struct pb;
1953
1954                         if ((failed_csum || inode->i_mode || inode->i_uid ||
1955                              inode->i_gid || inode->i_links_count ||
1956                              (inode->i_flags & EXT4_INLINE_DATA_FL) ||
1957                              inode->i_file_acl) &&
1958                             fix_problem(ctx, PR_1_INVALID_BAD_INODE, &pctx)) {
1959                                 memset(inode, 0, sizeof(struct ext2_inode));
1960                                 e2fsck_write_inode(ctx, ino, inode,
1961                                                    "clear bad inode");
1962                                 failed_csum = 0;
1963                         }
1964
1965                         e2fsck_pass1_block_map_r_lock(ctx);
1966                         pctx.errcode = ext2fs_copy_bitmap(ctx->global_ctx ?
1967                                         ctx->global_ctx->block_found_map :
1968                                         ctx->block_found_map, &pb.fs_meta_blocks);
1969                         e2fsck_pass1_block_map_r_unlock(ctx);
1970                         if (pctx.errcode) {
1971                                 pctx.num = 4;
1972                                 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
1973                                 ctx->flags |= E2F_FLAG_ABORT;
1974                                 goto endit;
1975                         }
1976                         pb.ino = EXT2_BAD_INO;
1977                         pb.num_blocks = pb.last_block = 0;
1978                         pb.last_db_block = -1;
1979                         pb.num_illegal_blocks = 0;
1980                         pb.suppress = 0; pb.clear = 0; pb.is_dir = 0;
1981                         pb.is_reg = 0; pb.fragmented = 0; pb.bbcheck = 0;
1982                         pb.inode = inode;
1983                         pb.pctx = &pctx;
1984                         pb.ctx = ctx;
1985                         pctx.errcode = ext2fs_block_iterate3(fs, ino, 0,
1986                                      block_buf, process_bad_block, &pb);
1987                         ext2fs_free_block_bitmap(pb.fs_meta_blocks);
1988                         if (pctx.errcode) {
1989                                 fix_problem(ctx, PR_1_BLOCK_ITERATE, &pctx);
1990                                 ctx->flags |= E2F_FLAG_ABORT;
1991                                 goto endit;
1992                         }
1993                         if (pb.bbcheck)
1994                                 if (!fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK_PROMPT, &pctx)) {
1995                                 ctx->flags |= E2F_FLAG_ABORT;
1996                                 goto endit;
1997                         }
1998                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1999                         clear_problem_context(&pctx);
2000                         FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
2001                         continue;
2002                 } else if (ino == EXT2_ROOT_INO) {
2003                         /*
2004                          * Make sure the root inode is a directory; if
2005                          * not, offer to clear it.  It will be
2006                          * regenerated in pass #3.
2007                          */
2008                         if (!LINUX_S_ISDIR(inode->i_mode)) {
2009                                 if (fix_problem(ctx, PR_1_ROOT_NO_DIR, &pctx))
2010                                         goto clear_inode;
2011                         }
2012                         /*
2013                          * If dtime is set, offer to clear it.  mke2fs
2014                          * version 0.2b created filesystems with the
2015                          * dtime field set for the root and lost+found
2016                          * directories.  We won't worry about
2017                          * /lost+found, since that can be regenerated
2018                          * easily.  But we will fix the root directory
2019                          * as a special case.
2020                          */
2021                         if (inode->i_dtime && inode->i_links_count) {
2022                                 if (fix_problem(ctx, PR_1_ROOT_DTIME, &pctx)) {
2023                                         inode->i_dtime = 0;
2024                                         e2fsck_write_inode(ctx, ino, inode,
2025                                                            "pass1");
2026                                         failed_csum = 0;
2027                                 }
2028                         }
2029                 } else if (ino == EXT2_JOURNAL_INO) {
2030                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
2031                         if (fs->super->s_journal_inum == EXT2_JOURNAL_INO) {
2032                                 if (!LINUX_S_ISREG(inode->i_mode) &&
2033                                     fix_problem(ctx, PR_1_JOURNAL_BAD_MODE,
2034                                                 &pctx)) {
2035                                         inode->i_mode = LINUX_S_IFREG;
2036                                         e2fsck_write_inode(ctx, ino, inode,
2037                                                            "pass1");
2038                                         failed_csum = 0;
2039                                 }
2040                                 check_blocks(ctx, &pctx, block_buf, NULL);
2041                                 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
2042                                 continue;
2043                         }
2044                         if ((inode->i_links_count ||
2045                              inode->i_blocks || inode->i_block[0]) &&
2046                             fix_problem(ctx, PR_1_JOURNAL_INODE_NOT_CLEAR,
2047                                         &pctx)) {
2048                                 memset(inode, 0, inode_size);
2049                                 ext2fs_icount_store(ctx->inode_link_info,
2050                                                     ino, 0);
2051                                 e2fsck_write_inode_full(ctx, ino, inode,
2052                                                         inode_size, "pass1");
2053                                 failed_csum = 0;
2054                         }
2055                 } else if (quota_inum_is_reserved(fs, ino)) {
2056                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
2057                         if (ext2fs_has_feature_quota(fs->super) &&
2058                             quota_inum_is_super(fs->super, ino)) {
2059                                 if (!LINUX_S_ISREG(inode->i_mode) &&
2060                                     fix_problem(ctx, PR_1_QUOTA_BAD_MODE,
2061                                                         &pctx)) {
2062                                         inode->i_mode = LINUX_S_IFREG;
2063                                         e2fsck_write_inode(ctx, ino, inode,
2064                                                         "pass1");
2065                                         failed_csum = 0;
2066                                 }
2067                                 check_blocks(ctx, &pctx, block_buf, NULL);
2068                                 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
2069                                 continue;
2070                         }
2071                         if ((inode->i_links_count ||
2072                              inode->i_blocks || inode->i_block[0]) &&
2073                             fix_problem(ctx, PR_1_QUOTA_INODE_NOT_CLEAR,
2074                                         &pctx)) {
2075                                 memset(inode, 0, inode_size);
2076                                 ext2fs_icount_store(ctx->inode_link_info,
2077                                                     ino, 0);
2078                                 e2fsck_write_inode_full(ctx, ino, inode,
2079                                                         inode_size, "pass1");
2080                                 failed_csum = 0;
2081                         }
2082                 } else if (ino < EXT2_FIRST_INODE(fs->super)) {
2083                         problem_t problem = 0;
2084
2085                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
2086                         if (ino == EXT2_BOOT_LOADER_INO) {
2087                                 if (LINUX_S_ISDIR(inode->i_mode))
2088                                         problem = PR_1_RESERVED_BAD_MODE;
2089                         } else if (ino == EXT2_RESIZE_INO) {
2090                                 if (inode->i_mode &&
2091                                     !LINUX_S_ISREG(inode->i_mode))
2092                                         problem = PR_1_RESERVED_BAD_MODE;
2093                         } else {
2094                                 if (inode->i_mode != 0)
2095                                         problem = PR_1_RESERVED_BAD_MODE;
2096                         }
2097                         if (problem) {
2098                                 if (fix_problem(ctx, problem, &pctx)) {
2099                                         inode->i_mode = 0;
2100                                         e2fsck_write_inode(ctx, ino, inode,
2101                                                            "pass1");
2102                                         failed_csum = 0;
2103                                 }
2104                         }
2105                         check_blocks(ctx, &pctx, block_buf, NULL);
2106                         FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
2107                         continue;
2108                 }
2109
2110                 if (!inode->i_links_count) {
2111                         FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
2112                         continue;
2113                 }
2114                 /*
2115                  * n.b.  0.3c ext2fs code didn't clear i_links_count for
2116                  * deleted files.  Oops.
2117                  *
2118                  * Since all new ext2 implementations get this right,
2119                  * we now assume that the case of non-zero
2120                  * i_links_count and non-zero dtime means that we
2121                  * should keep the file, not delete it.
2122                  *
2123                  */
2124                 if (inode->i_dtime) {
2125                         if (fix_problem(ctx, PR_1_SET_DTIME, &pctx)) {
2126                                 inode->i_dtime = 0;
2127                                 e2fsck_write_inode(ctx, ino, inode, "pass1");
2128                                 failed_csum = 0;
2129                         }
2130                 }
2131
2132                 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
2133                 switch (fs->super->s_creator_os) {
2134                     case EXT2_OS_HURD:
2135                         frag = inode->osd2.hurd2.h_i_frag;
2136                         fsize = inode->osd2.hurd2.h_i_fsize;
2137                         break;
2138                     default:
2139                         frag = fsize = 0;
2140                 }
2141
2142                 if (inode->i_faddr || frag || fsize ||
2143                     (!ext2fs_has_feature_largedir(fs->super) &&
2144                     (LINUX_S_ISDIR(inode->i_mode) && inode->i_size_high)))
2145                         mark_inode_bad(ctx, ino);
2146                 if ((fs->super->s_creator_os != EXT2_OS_HURD) &&
2147                     !ext2fs_has_feature_64bit(fs->super) &&
2148                     inode->osd2.linux2.l_i_file_acl_high != 0)
2149                         mark_inode_bad(ctx, ino);
2150                 if ((fs->super->s_creator_os != EXT2_OS_HURD) &&
2151                     !ext2fs_has_feature_huge_file(fs->super) &&
2152                     (inode->osd2.linux2.l_i_blocks_hi != 0))
2153                         mark_inode_bad(ctx, ino);
2154                 if (inode->i_flags & EXT2_IMAGIC_FL) {
2155                         if (imagic_fs) {
2156                                 if (!ctx->inode_imagic_map)
2157                                         alloc_imagic_map(ctx);
2158                                 ext2fs_mark_inode_bitmap2(ctx->inode_imagic_map,
2159                                                          ino);
2160                         } else {
2161                                 if (fix_problem(ctx, PR_1_SET_IMAGIC, &pctx)) {
2162                                         inode->i_flags &= ~EXT2_IMAGIC_FL;
2163                                         e2fsck_write_inode(ctx, ino,
2164                                                            inode, "pass1");
2165                                         failed_csum = 0;
2166                                 }
2167                         }
2168                 }
2169
2170                 check_inode_extra_space(ctx, &pctx, &ea_ibody_quota);
2171                 check_is_really_dir(ctx, &pctx, block_buf);
2172
2173                 /*
2174                  * ext2fs_inode_has_valid_blocks2 does not actually look
2175                  * at i_block[] values, so not endian-sensitive here.
2176                  */
2177                 if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL) &&
2178                     LINUX_S_ISLNK(inode->i_mode) &&
2179                     !ext2fs_inode_has_valid_blocks2(fs, inode) &&
2180                     fix_problem(ctx, PR_1_FAST_SYMLINK_EXTENT_FL, &pctx)) {
2181                         inode->i_flags &= ~EXT4_EXTENTS_FL;
2182                         e2fsck_write_inode(ctx, ino, inode, "pass1");
2183                         failed_csum = 0;
2184                 }
2185
2186                 if ((inode->i_flags & EXT4_ENCRYPT_FL) &&
2187                     add_encrypted_file(ctx, &pctx) < 0)
2188                         goto clear_inode;
2189
2190                 if (casefold_fs && inode->i_flags & EXT4_CASEFOLD_FL)
2191                         ext2fs_mark_inode_bitmap2(ctx->inode_casefold_map, ino);
2192
2193                 if (LINUX_S_ISDIR(inode->i_mode)) {
2194                         ext2fs_mark_inode_bitmap2(ctx->inode_dir_map, ino);
2195                         e2fsck_add_dir_info(ctx, ino, 0);
2196                         ctx->fs_directory_count++;
2197                         if (inode->i_flags & EXT4_CASEFOLD_FL)
2198                                 add_casefolded_dir(ctx, ino);
2199                 } else if (LINUX_S_ISREG (inode->i_mode)) {
2200                         ext2fs_mark_inode_bitmap2(ctx->inode_reg_map, ino);
2201                         ctx->fs_regular_count++;
2202                 } else if (LINUX_S_ISCHR (inode->i_mode) &&
2203                            e2fsck_pass1_check_device_inode(fs, inode)) {
2204                         check_extents_inlinedata(ctx, &pctx);
2205                         check_immutable(ctx, &pctx);
2206                         check_size(ctx, &pctx);
2207                         ctx->fs_chardev_count++;
2208                 } else if (LINUX_S_ISBLK (inode->i_mode) &&
2209                            e2fsck_pass1_check_device_inode(fs, inode)) {
2210                         check_extents_inlinedata(ctx, &pctx);
2211                         check_immutable(ctx, &pctx);
2212                         check_size(ctx, &pctx);
2213                         ctx->fs_blockdev_count++;
2214                 } else if (LINUX_S_ISLNK (inode->i_mode) &&
2215                            e2fsck_pass1_check_symlink(fs, ino, inode,
2216                                                       block_buf)) {
2217                         check_immutable(ctx, &pctx);
2218                         ctx->fs_symlinks_count++;
2219                         if (inode->i_flags & EXT4_INLINE_DATA_FL) {
2220                                 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
2221                                 continue;
2222                         } else if (ext2fs_is_fast_symlink(inode)) {
2223                                 ctx->fs_fast_symlinks_count++;
2224                                 check_blocks(ctx, &pctx, block_buf,
2225                                              &ea_ibody_quota);
2226                                 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
2227                                 continue;
2228                         }
2229                 }
2230                 else if (LINUX_S_ISFIFO (inode->i_mode) &&
2231                          e2fsck_pass1_check_device_inode(fs, inode)) {
2232                         check_extents_inlinedata(ctx, &pctx);
2233                         check_immutable(ctx, &pctx);
2234                         check_size(ctx, &pctx);
2235                         ctx->fs_fifo_count++;
2236                 } else if ((LINUX_S_ISSOCK (inode->i_mode)) &&
2237                            e2fsck_pass1_check_device_inode(fs, inode)) {
2238                         check_extents_inlinedata(ctx, &pctx);
2239                         check_immutable(ctx, &pctx);
2240                         check_size(ctx, &pctx);
2241                         ctx->fs_sockets_count++;
2242                 } else
2243                         mark_inode_bad(ctx, ino);
2244                 if (!(inode->i_flags & EXT4_EXTENTS_FL) &&
2245                     !(inode->i_flags & EXT4_INLINE_DATA_FL)) {
2246                         if (inode->i_block[EXT2_IND_BLOCK])
2247                                 ctx->fs_ind_count++;
2248                         if (inode->i_block[EXT2_DIND_BLOCK])
2249                                 ctx->fs_dind_count++;
2250                         if (inode->i_block[EXT2_TIND_BLOCK])
2251                                 ctx->fs_tind_count++;
2252                 }
2253                 if (!(inode->i_flags & EXT4_EXTENTS_FL) &&
2254                     !(inode->i_flags & EXT4_INLINE_DATA_FL) &&
2255                     (inode->i_block[EXT2_IND_BLOCK] ||
2256                      inode->i_block[EXT2_DIND_BLOCK] ||
2257                      inode->i_block[EXT2_TIND_BLOCK] ||
2258                      ext2fs_file_acl_block(fs, inode))) {
2259                         struct process_inode_block *itp;
2260
2261                         itp = &inodes_to_process[process_inode_count];
2262                         itp->ino = ino;
2263                         itp->ea_ibody_quota = ea_ibody_quota;
2264                         if (inode_size < sizeof(struct ext2_inode_large))
2265                                 memcpy(&itp->inode, inode, inode_size);
2266                         else
2267                                 memcpy(&itp->inode, inode, sizeof(itp->inode));
2268                         process_inode_count++;
2269                 } else
2270                         check_blocks(ctx, &pctx, block_buf, &ea_ibody_quota);
2271
2272                 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
2273
2274                 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
2275                         goto endit;
2276
2277                 if (process_inode_count >= ctx->process_inode_size) {
2278                         process_inodes(ctx, block_buf, inodes_to_process,
2279                                        &process_inode_count);
2280
2281                         if (e2fsck_should_abort(ctx))
2282                                 goto endit;
2283                 }
2284         }
2285         process_inodes(ctx, block_buf, inodes_to_process,
2286                        &process_inode_count);
2287         ext2fs_close_inode_scan(scan);
2288         scan = NULL;
2289
2290         if (ctx->ea_block_quota_blocks) {
2291                 ea_refcount_free(ctx->ea_block_quota_blocks);
2292                 ctx->ea_block_quota_blocks = 0;
2293         }
2294
2295         if (ctx->ea_block_quota_inodes) {
2296                 ea_refcount_free(ctx->ea_block_quota_inodes);
2297                 ctx->ea_block_quota_inodes = 0;
2298         }
2299
2300         /* We don't need the encryption policy => ID map any more */
2301         destroy_encryption_policy_map(ctx);
2302
2303         if (ctx->flags & E2F_FLAG_RESTART) {
2304                 /*
2305                  * Only the master copy of the superblock and block
2306                  * group descriptors are going to be written during a
2307                  * restart, so set the superblock to be used to be the
2308                  * master superblock.
2309                  */
2310                 ctx->use_superblock = 0;
2311                 goto endit;
2312         }
2313
2314         if (ctx->large_dirs && !ext2fs_has_feature_largedir(ctx->fs->super)) {
2315                 ext2_filsys fs = ctx->fs;
2316
2317                 if (fix_problem(ctx, PR_2_FEATURE_LARGE_DIRS, &pctx)) {
2318                         ext2fs_set_feature_largedir(fs->super);
2319                         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
2320                         ext2fs_mark_super_dirty(fs);
2321                 }
2322                 if (fs->super->s_rev_level == EXT2_GOOD_OLD_REV &&
2323                     fix_problem(ctx, PR_1_FS_REV_LEVEL, &pctx)) {
2324                         ext2fs_update_dynamic_rev(fs);
2325                         ext2fs_mark_super_dirty(fs);
2326                 }
2327         }
2328
2329         ctx->flags |= E2F_FLAG_ALLOC_OK;
2330 endit:
2331         e2fsck_use_inode_shortcuts(ctx, 0);
2332         ext2fs_free_mem(&inodes_to_process);
2333         inodes_to_process = 0;
2334
2335         if (scan)
2336                 ext2fs_close_inode_scan(scan);
2337         if (block_buf)
2338                 ext2fs_free_mem(&block_buf);
2339         if (inode)
2340                 ext2fs_free_mem(&inode);
2341
2342         /*
2343          * The l+f inode may have been cleared, so zap it now and
2344          * later passes will recalculate it if necessary
2345          */
2346         ctx->lost_and_found = 0;
2347
2348         if ((ctx->flags & E2F_FLAG_SIGNAL_MASK) == 0)
2349                 print_resource_track(ctx, _("Pass 1"), &rtrack, ctx->fs->io);
2350         else
2351                 ctx->invalid_bitmaps++;
2352 }
2353
2354 #ifdef HAVE_PTHREAD
2355 static errcode_t e2fsck_pass1_copy_bitmap(ext2_filsys fs, ext2fs_generic_bitmap *src,
2356                                           ext2fs_generic_bitmap *dest)
2357 {
2358         errcode_t ret;
2359
2360         ret = ext2fs_copy_bitmap(*src, dest);
2361         if (ret)
2362                 return ret;
2363
2364         (*dest)->fs = fs;
2365
2366         return 0;
2367 }
2368
2369 static void e2fsck_pass1_free_bitmap(ext2fs_generic_bitmap *bitmap)
2370 {
2371         if (*bitmap) {
2372                 ext2fs_free_generic_bmap(*bitmap);
2373                 *bitmap = NULL;
2374         }
2375
2376 }
2377
2378 static errcode_t e2fsck_pass1_merge_bitmap(ext2_filsys fs, ext2fs_generic_bitmap *src,
2379                                           ext2fs_generic_bitmap *dest)
2380 {
2381         errcode_t ret = 0;
2382
2383         if (*src) {
2384                 if (*dest == NULL) {
2385                         *dest = *src;
2386                         *src = NULL;
2387                 } else {
2388                         ret = ext2fs_merge_bitmap(*src, *dest, NULL, NULL);
2389                         if (ret)
2390                                 return ret;
2391                 }
2392                 (*dest)->fs = fs;
2393         }
2394
2395         return 0;
2396 }
2397
2398 static errcode_t e2fsck_pass1_copy_fs(ext2_filsys dest, e2fsck_t src_context,
2399                                       ext2_filsys src)
2400 {
2401         errcode_t       retval;
2402
2403         memcpy(dest, src, sizeof(struct struct_ext2_filsys));
2404         dest->inode_map = NULL;
2405         dest->block_map = NULL;
2406         dest->badblocks = NULL;
2407         if (dest->dblist)
2408                 dest->dblist->fs = dest;
2409         if (src->block_map) {
2410                 retval = e2fsck_pass1_copy_bitmap(dest, &src->block_map,
2411                                                   &dest->block_map);
2412                 if (retval)
2413                         return retval;
2414         }
2415         if (src->inode_map) {
2416                 retval = e2fsck_pass1_copy_bitmap(dest, &src->inode_map,
2417                                                   &dest->inode_map);
2418                 if (retval)
2419                         return retval;
2420         }
2421
2422         if (src->badblocks) {
2423                 retval = ext2fs_badblocks_copy(src->badblocks,
2424                                                &dest->badblocks);
2425                 if (retval)
2426                         return retval;
2427         }
2428
2429         /* disable it for now */
2430         src_context->openfs_flags &= ~EXT2_FLAG_EXCLUSIVE;
2431         retval = ext2fs_open_channel(dest, src_context->io_options,
2432                                      src_context->io_manager,
2433                                      src_context->openfs_flags,
2434                                      src->io->block_size);
2435         if (retval)
2436                 return retval;
2437
2438         /* Block size might not be default */
2439         io_channel_set_blksize(dest->io, src->io->block_size);
2440         ehandler_init(dest->io);
2441
2442         assert(dest->io->magic == src->io->magic);
2443         assert(dest->io->manager == src->io->manager);
2444         assert(strcmp(dest->io->name, src->io->name) == 0);
2445         assert(dest->io->block_size == src->io->block_size);
2446         assert(dest->io->read_error == src->io->read_error);
2447         assert(dest->io->write_error == src->io->write_error);
2448         assert(dest->io->refcount == src->io->refcount);
2449         assert(dest->io->flags == src->io->flags);
2450         assert(dest->io->app_data == dest);
2451         assert(src->io->app_data == src);
2452         assert(dest->io->align == src->io->align);
2453
2454         /* The data should be written to disk immediately */
2455         dest->io->flags |= CHANNEL_FLAGS_WRITETHROUGH;
2456         /* icache will be rebuilt if needed, so do not copy from @src */
2457         src->icache = NULL;
2458         return 0;
2459 }
2460
2461 static int e2fsck_pass1_merge_fs(ext2_filsys dest, ext2_filsys src)
2462 {
2463         struct ext2_inode_cache *icache = dest->icache;
2464         errcode_t retval = 0;
2465         io_channel dest_io;
2466         io_channel dest_image_io;
2467         ext2fs_inode_bitmap inode_map;
2468         ext2fs_block_bitmap block_map;
2469         ext2_badblocks_list badblocks;
2470         ext2_dblist dblist;
2471         int flags;
2472         e2fsck_t dest_ctx = dest->priv_data;
2473
2474         dest_io = dest->io;
2475         dest_image_io = dest->image_io;
2476         inode_map = dest->inode_map;
2477         block_map = dest->block_map;
2478         badblocks = dest->badblocks;
2479         dblist = dest->dblist;
2480         flags = dest->flags;
2481
2482         memcpy(dest, src, sizeof(struct struct_ext2_filsys));
2483         dest->io = dest_io;
2484         dest->image_io = dest_image_io;
2485         dest->icache = icache;
2486         dest->inode_map = inode_map;
2487         dest->block_map = block_map;
2488         dest->badblocks = badblocks;
2489         dest->dblist = dblist;
2490         dest->priv_data = dest_ctx;
2491         if (dest->dblist)
2492                 dest->dblist->fs = dest;
2493         dest->flags = src->flags | flags;
2494         if (!(src->flags & EXT2_FLAG_VALID) || !(flags & EXT2_FLAG_VALID))
2495                 ext2fs_unmark_valid(dest);
2496
2497         if (src->icache) {
2498                 ext2fs_free_inode_cache(src->icache);
2499                 src->icache = NULL;
2500         }
2501
2502         retval = e2fsck_pass1_merge_bitmap(dest, &src->inode_map,
2503                                            &dest->inode_map);
2504         if (retval)
2505                 goto out;
2506
2507         retval = e2fsck_pass1_merge_bitmap(dest, &src->block_map,
2508                                           &dest->block_map);
2509         if (retval)
2510                 goto out;
2511
2512         if (src->dblist) {
2513                 if (dest->dblist) {
2514                         retval = ext2fs_merge_dblist(src->dblist,
2515                                                      dest->dblist);
2516                         if (retval)
2517                                 goto out;
2518                 } else {
2519                         dest->dblist = src->dblist;
2520                         dest->dblist->fs = dest;
2521                         src->dblist = NULL;
2522                 }
2523         }
2524
2525         if (src->badblocks) {
2526                 if (dest->badblocks == NULL)
2527                         retval = ext2fs_badblocks_copy(src->badblocks,
2528                                                        &dest->badblocks);
2529                 else
2530                         retval = ext2fs_badblocks_merge(src->badblocks,
2531                                                         dest->badblocks);
2532         }
2533 out:
2534         io_channel_close(src->io);
2535         if (src->inode_map)
2536                 ext2fs_free_generic_bmap(src->inode_map);
2537         if (src->block_map)
2538                 ext2fs_free_generic_bmap(src->block_map);
2539         if (src->badblocks)
2540                 ext2fs_badblocks_list_free(src->badblocks);
2541         if (src->dblist)
2542                 ext2fs_free_dblist(src->dblist);
2543
2544         return retval;
2545 }
2546
2547 static void e2fsck_pass1_copy_invalid_bitmaps(e2fsck_t global_ctx,
2548                                               e2fsck_t thread_ctx)
2549 {
2550         dgrp_t i, j;
2551         dgrp_t grp_start = thread_ctx->thread_info.et_group_start;
2552         dgrp_t grp_end = thread_ctx->thread_info.et_group_end;
2553         dgrp_t total = grp_end - grp_start;
2554
2555         thread_ctx->invalid_inode_bitmap_flag =
2556                         e2fsck_allocate_memory(global_ctx, sizeof(int) * total,
2557                                                 "invalid_inode_bitmap");
2558         thread_ctx->invalid_block_bitmap_flag =
2559                         e2fsck_allocate_memory(global_ctx, sizeof(int) * total,
2560                                                "invalid_block_bitmap");
2561         thread_ctx->invalid_inode_table_flag =
2562                         e2fsck_allocate_memory(global_ctx, sizeof(int) * total,
2563                                                "invalid_inode_table");
2564
2565         memcpy(thread_ctx->invalid_block_bitmap_flag,
2566                &global_ctx->invalid_block_bitmap_flag[grp_start],
2567                total * sizeof(int));
2568         memcpy(thread_ctx->invalid_inode_bitmap_flag,
2569                &global_ctx->invalid_inode_bitmap_flag[grp_start],
2570                total * sizeof(int));
2571         memcpy(thread_ctx->invalid_inode_table_flag,
2572                &global_ctx->invalid_inode_table_flag[grp_start],
2573                total * sizeof(int));
2574
2575         thread_ctx->invalid_bitmaps = 0;
2576         for (i = grp_start, j = 0; i < grp_end; i++, j++) {
2577                 if (thread_ctx->invalid_block_bitmap_flag[j])
2578                         thread_ctx->invalid_bitmaps++;
2579                 if (thread_ctx->invalid_inode_bitmap_flag[j])
2580                         thread_ctx->invalid_bitmaps++;
2581                 if (thread_ctx->invalid_inode_table_flag[j])
2582                         thread_ctx->invalid_bitmaps++;
2583         }
2584 }
2585
2586 static void e2fsck_pass1_merge_invalid_bitmaps(e2fsck_t global_ctx,
2587                                                e2fsck_t thread_ctx)
2588 {
2589         dgrp_t i, j;
2590         dgrp_t grp_start = thread_ctx->thread_info.et_group_start;
2591         dgrp_t grp_end = thread_ctx->thread_info.et_group_end;
2592         dgrp_t total = grp_end - grp_start;
2593
2594         memcpy(&global_ctx->invalid_block_bitmap_flag[grp_start],
2595                thread_ctx->invalid_block_bitmap_flag, total * sizeof(int));
2596         memcpy(&global_ctx->invalid_inode_bitmap_flag[grp_start],
2597                thread_ctx->invalid_inode_bitmap_flag, total * sizeof(int));
2598         memcpy(&global_ctx->invalid_inode_table_flag[grp_start],
2599                thread_ctx->invalid_inode_table_flag, total * sizeof(int));
2600         global_ctx->invalid_bitmaps += thread_ctx->invalid_bitmaps;
2601 }
2602
2603 static errcode_t e2fsck_pass1_thread_prepare(e2fsck_t global_ctx, e2fsck_t *thread_ctx,
2604                                              int thread_index, int num_threads,
2605                                              dgrp_t average_group)
2606 {
2607         errcode_t               retval;
2608         e2fsck_t                thread_context;
2609         ext2_filsys             thread_fs;
2610         ext2_filsys             global_fs = global_ctx->fs;
2611         struct e2fsck_thread    *tinfo;
2612
2613         assert(global_ctx->inode_used_map == NULL);
2614         assert(global_ctx->inode_dir_map == NULL);
2615         assert(global_ctx->inode_bb_map == NULL);
2616         assert(global_ctx->inode_imagic_map == NULL);
2617         assert(global_ctx->inode_reg_map == NULL);
2618         assert(global_ctx->inodes_to_rebuild == NULL);
2619
2620         assert(global_ctx->block_found_map != NULL);
2621         assert(global_ctx->block_metadata_map != NULL);
2622         assert(global_ctx->block_dup_map != NULL);
2623         assert(global_ctx->block_ea_map == NULL);
2624         assert(global_ctx->fs->dblist == NULL);
2625
2626         retval = ext2fs_get_mem(sizeof(struct e2fsck_struct), &thread_context);
2627         if (retval) {
2628                 com_err(global_ctx->program_name, retval, "while allocating memory");
2629                 return retval;
2630         }
2631         memcpy(thread_context, global_ctx, sizeof(struct e2fsck_struct));
2632         thread_context->block_dup_map = NULL;
2633
2634         retval = e2fsck_allocate_block_bitmap(global_ctx->fs,
2635                                 _("in-use block map"), EXT2FS_BMAP64_RBTREE,
2636                                 "block_found_map", &thread_context->block_found_map);
2637         if (retval)
2638                 goto out_context;
2639
2640         thread_context->global_ctx = global_ctx;
2641         retval = ext2fs_get_mem(sizeof(struct struct_ext2_filsys), &thread_fs);
2642         if (retval) {
2643                 com_err(global_ctx->program_name, retval, "while allocating memory");
2644                 goto out_context;
2645         }
2646
2647         io_channel_flush_cleanup(global_fs->io);
2648         retval = e2fsck_pass1_copy_fs(thread_fs, global_ctx, global_fs);
2649         if (retval) {
2650                 com_err(global_ctx->program_name, retval, "while copying fs");
2651                 goto out_fs;
2652         }
2653         thread_fs->priv_data = thread_context;
2654
2655         thread_context->thread_info.et_thread_index = thread_index;
2656         set_up_logging(thread_context);
2657
2658         tinfo = &thread_context->thread_info;
2659         tinfo->et_group_start = average_group * thread_index;
2660         if (thread_index == global_fs->fs_num_threads - 1)
2661                 tinfo->et_group_end = thread_fs->group_desc_count;
2662         else
2663                 tinfo->et_group_end = average_group * (thread_index + 1);
2664         tinfo->et_group_next = tinfo->et_group_start;
2665         tinfo->et_inode_number = 0;
2666         tinfo->et_log_buf[0] = '\0';
2667         tinfo->et_log_length = 0;
2668         if (thread_context->options & E2F_OPT_MULTITHREAD)
2669                 log_out(thread_context, _("Scan group range [%d, %d)\n"),
2670                         tinfo->et_group_start, tinfo->et_group_end);
2671         thread_context->fs = thread_fs;
2672         retval = quota_init_context(&thread_context->qctx, thread_fs, 0);
2673         if (retval) {
2674                 com_err(global_ctx->program_name, retval,
2675                         "while init quota context");
2676                 goto out_fs;
2677         }
2678         *thread_ctx = thread_context;
2679         e2fsck_pass1_copy_invalid_bitmaps(global_ctx, thread_context);
2680         return 0;
2681 out_fs:
2682         ext2fs_free_mem(&thread_fs);
2683 out_context:
2684         if (thread_context->block_found_map)
2685                 ext2fs_free_mem(&thread_context->block_found_map);
2686         ext2fs_free_mem(&thread_context);
2687         return retval;
2688 }
2689
2690 static void e2fsck_pass1_merge_dir_info(e2fsck_t global_ctx, e2fsck_t thread_ctx)
2691 {
2692         if (thread_ctx->dir_info == NULL)
2693                 return;
2694
2695         if (global_ctx->dir_info == NULL) {
2696                 global_ctx->dir_info = thread_ctx->dir_info;
2697                 thread_ctx->dir_info = NULL;
2698                 return;
2699         }
2700
2701         e2fsck_merge_dir_info(global_ctx, thread_ctx->dir_info,
2702                               global_ctx->dir_info);
2703 }
2704
2705 static void e2fsck_pass1_merge_dx_dir(e2fsck_t global_ctx, e2fsck_t thread_ctx)
2706 {
2707         if (thread_ctx->dx_dir_info == NULL)
2708                 return;
2709
2710         if (global_ctx->dx_dir_info == NULL) {
2711                 global_ctx->dx_dir_info = thread_ctx->dx_dir_info;
2712                 global_ctx->dx_dir_info_size = thread_ctx->dx_dir_info_size;
2713                 global_ctx->dx_dir_info_count = thread_ctx->dx_dir_info_count;
2714                 thread_ctx->dx_dir_info = NULL;
2715                 return;
2716         }
2717
2718         e2fsck_merge_dx_dir(global_ctx, thread_ctx);
2719 }
2720
2721 static inline errcode_t
2722 e2fsck_pass1_merge_icount(ext2_icount_t *dest_icount,
2723                           ext2_icount_t *src_icount)
2724 {
2725         if (*src_icount) {
2726                 if (*dest_icount == NULL) {
2727                         *dest_icount = *src_icount;
2728                         *src_icount = NULL;
2729                 } else {
2730                         errcode_t ret;
2731
2732                         ret = ext2fs_icount_merge(*src_icount,
2733                                                   *dest_icount);
2734                         if (ret)
2735                                 return ret;
2736                 }
2737         }
2738
2739         return 0;
2740 }
2741
2742 static errcode_t e2fsck_pass1_merge_icounts(e2fsck_t global_ctx, e2fsck_t thread_ctx)
2743 {
2744         errcode_t ret;
2745
2746         ret = e2fsck_pass1_merge_icount(&global_ctx->inode_count,
2747                                         &thread_ctx->inode_count);
2748         if (ret)
2749                 return ret;
2750         ret = e2fsck_pass1_merge_icount(&global_ctx->inode_link_info,
2751                                         &thread_ctx->inode_link_info);
2752
2753         return ret;
2754 }
2755
2756 static errcode_t e2fsck_pass1_merge_dirs_to_hash(e2fsck_t global_ctx,
2757                                                  e2fsck_t thread_ctx)
2758 {
2759         errcode_t retval = 0;
2760
2761         if (!thread_ctx->dirs_to_hash)
2762                 return 0;
2763
2764         if (!global_ctx->dirs_to_hash)
2765                 retval = ext2fs_badblocks_copy(thread_ctx->dirs_to_hash,
2766                                                &global_ctx->dirs_to_hash);
2767         else
2768                 retval = ext2fs_badblocks_merge(thread_ctx->dirs_to_hash,
2769                                                 global_ctx->dirs_to_hash);
2770
2771         return retval;
2772 }
2773
2774 static errcode_t e2fsck_pass1_merge_ea_inode_refs(e2fsck_t global_ctx,
2775                                                   e2fsck_t thread_ctx)
2776 {
2777         ea_value_t count;
2778         blk64_t blk;
2779         errcode_t retval;
2780
2781         if (!thread_ctx->ea_inode_refs)
2782                 return 0;
2783
2784         if (!global_ctx->ea_inode_refs) {
2785                 global_ctx->ea_inode_refs = thread_ctx->ea_inode_refs;
2786                 thread_ctx->ea_inode_refs = NULL;
2787                 return 0;
2788         }
2789
2790         ea_refcount_intr_begin(thread_ctx->ea_inode_refs);
2791         while (1) {
2792                 if ((blk = ea_refcount_intr_next(thread_ctx->ea_inode_refs,
2793                                                  &count)) == 0)
2794                         break;
2795                 if (!global_ctx->block_ea_map ||
2796                     !ext2fs_fast_test_block_bitmap2(global_ctx->block_ea_map,
2797                                                     blk)) {
2798                         retval = ea_refcount_store(global_ctx->ea_inode_refs,
2799                                                    blk, count);
2800                         if (retval)
2801                                 return retval;
2802                 }
2803         }
2804
2805         return retval;
2806 }
2807
2808 static ea_value_t ea_refcount_usage(e2fsck_t ctx, blk64_t blk,
2809                                     ea_value_t *orig)
2810 {
2811         ea_value_t count_cur;
2812         ea_value_t count_extra = 0;
2813         ea_value_t count_orig;
2814
2815         ea_refcount_fetch(ctx->refcount_orig, blk, &count_orig);
2816         ea_refcount_fetch(ctx->refcount, blk, &count_cur);
2817         /* most of time this is not needed */
2818         if (ctx->refcount_extra && count_cur == 0)
2819                 ea_refcount_fetch(ctx->refcount_extra, blk, &count_extra);
2820
2821         if (!count_orig)
2822                 count_orig = *orig;
2823         else if (orig)
2824                 *orig = count_orig;
2825
2826         return count_orig + count_extra - count_cur;
2827 }
2828
2829 static errcode_t e2fsck_pass1_merge_ea_refcount(e2fsck_t global_ctx,
2830                                                 e2fsck_t thread_ctx)
2831 {
2832         ea_value_t count;
2833         blk64_t blk;
2834         errcode_t retval = 0;
2835
2836         if (!thread_ctx->refcount)
2837                 return 0;
2838
2839         if (!global_ctx->refcount) {
2840                 global_ctx->refcount = thread_ctx->refcount;
2841                 thread_ctx->refcount = NULL;
2842                 global_ctx->refcount_extra = thread_ctx->refcount;
2843                 thread_ctx->refcount_extra = NULL;
2844                 return 0;
2845         }
2846
2847         ea_refcount_intr_begin(thread_ctx->refcount);
2848         while (1) {
2849                 if ((blk = ea_refcount_intr_next(thread_ctx->refcount,
2850                                                  &count)) == 0)
2851                         break;
2852                 /**
2853                  * this EA has never seen before, so just store its
2854                  * refcount and refcount_extra into global_ctx if needed.
2855                  */
2856                 if (!global_ctx->block_ea_map ||
2857                     !ext2fs_fast_test_block_bitmap2(global_ctx->block_ea_map,
2858                                                     blk)) {
2859                         ea_value_t extra;
2860
2861                         retval = ea_refcount_store(global_ctx->refcount,
2862                                                    blk, count);
2863                         if (retval)
2864                                 return retval;
2865
2866                         if (count > 0 || !thread_ctx->refcount_extra)
2867                                 continue;
2868                         ea_refcount_fetch(thread_ctx->refcount_extra, blk,
2869                                           &extra);
2870                         if (extra == 0)
2871                                 continue;
2872
2873                         if (!global_ctx->refcount_extra) {
2874                                 retval = ea_refcount_create(0,
2875                                                 &global_ctx->refcount_extra);
2876                                 if (retval)
2877                                         return retval;
2878                         }
2879                         retval = ea_refcount_store(global_ctx->refcount_extra,
2880                                                    blk, extra);
2881                         if (retval)
2882                                 return retval;
2883                 } else {
2884                         ea_value_t orig;
2885                         ea_value_t thread_usage;
2886                         ea_value_t global_usage;
2887                         ea_value_t new;
2888
2889                         thread_usage = ea_refcount_usage(thread_ctx,
2890                                                          blk, &orig);
2891                         global_usage = ea_refcount_usage(global_ctx,
2892                                                          blk, &orig);
2893                         if (thread_usage + global_usage <= orig) {
2894                                 new = orig - thread_usage - global_usage;
2895                                 retval = ea_refcount_store(global_ctx->refcount,
2896                                                            blk, new);
2897                                 if (retval)
2898                                         return retval;
2899                                 continue;
2900                         }
2901                         /* update it is as zero */
2902                         retval = ea_refcount_store(global_ctx->refcount,
2903                                                    blk, 0);
2904                         if (retval)
2905                                 return retval;
2906                         /* Ooops, this EA was referenced more than it stated */
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                         new = global_usage + thread_usage - orig;
2914                         retval = ea_refcount_store(global_ctx->refcount_extra,
2915                                                    blk, new);
2916                         if (retval)
2917                                 return retval;
2918                 }
2919         }
2920
2921         return retval;
2922 }
2923
2924 static errcode_t e2fsck_pass1_merge_context(e2fsck_t global_ctx,
2925                                             e2fsck_t thread_ctx)
2926 {
2927         ext2_filsys global_fs = global_ctx->fs;
2928         errcode_t retval;
2929         int i;
2930
2931         global_ctx->fs_directory_count += thread_ctx->fs_directory_count;
2932         global_ctx->fs_regular_count += thread_ctx->fs_regular_count;
2933         global_ctx->fs_blockdev_count += thread_ctx->fs_blockdev_count;
2934         global_ctx->fs_chardev_count += thread_ctx->fs_chardev_count;
2935         global_ctx->fs_links_count += thread_ctx->fs_links_count;
2936         global_ctx->fs_symlinks_count += thread_ctx->fs_symlinks_count;
2937         global_ctx->fs_fast_symlinks_count += thread_ctx->fs_fast_symlinks_count;
2938         global_ctx->fs_fifo_count += thread_ctx->fs_fifo_count;
2939         global_ctx->fs_total_count += thread_ctx->fs_total_count;
2940         global_ctx->fs_badblocks_count += thread_ctx->fs_badblocks_count;
2941         global_ctx->fs_sockets_count += thread_ctx->fs_sockets_count;
2942         global_ctx->fs_ind_count += thread_ctx->fs_ind_count;
2943         global_ctx->fs_dind_count += thread_ctx->fs_dind_count;
2944         global_ctx->fs_tind_count += thread_ctx->fs_tind_count;
2945         global_ctx->fs_fragmented += thread_ctx->fs_fragmented;
2946         global_ctx->fs_fragmented_dir += thread_ctx->fs_fragmented_dir;
2947         global_ctx->large_files += thread_ctx->large_files;
2948         /* threads might enable E2F_OPT_YES */
2949         global_ctx->options |= thread_ctx->options;
2950         global_ctx->flags |= thread_ctx->flags;
2951         /*
2952          * The l+f inode may have been cleared, so zap it now and
2953          * later passes will recalculate it if necessary
2954          */
2955         global_ctx->lost_and_found = 0;
2956         /* merge extent depth count */
2957         for (i = 0; i < MAX_EXTENT_DEPTH_COUNT; i++)
2958                 global_ctx->extent_depth_count[i] +=
2959                         thread_ctx->extent_depth_count[i];
2960
2961         e2fsck_pass1_merge_dir_info(global_ctx, thread_ctx);
2962         e2fsck_pass1_merge_dx_dir(global_ctx, thread_ctx);
2963
2964         retval = e2fsck_pass1_merge_fs(global_ctx->fs, thread_ctx->fs);
2965         if (retval) {
2966                 com_err(global_ctx->program_name, 0, _("while merging fs\n"));
2967                 return retval;
2968         }
2969         retval = e2fsck_pass1_merge_icounts(global_ctx, thread_ctx);
2970         if (retval) {
2971                 com_err(global_ctx->program_name, 0,
2972                         _("while merging icounts\n"));
2973                 return retval;
2974         }
2975
2976         retval = e2fsck_pass1_merge_dirs_to_hash(global_ctx, thread_ctx);
2977         if (retval) {
2978                 com_err(global_ctx->program_name, 0,
2979                         _("while merging dirs to hash\n"));
2980                 return retval;
2981         }
2982
2983         e2fsck_pass1_merge_ea_inode_refs(global_ctx, thread_ctx);
2984         e2fsck_pass1_merge_ea_refcount(global_ctx, thread_ctx);
2985         retval = quota_merge_and_update_usage(global_ctx->qctx,
2986                                               thread_ctx->qctx);
2987         if (retval)
2988                 return retval;
2989
2990         e2fsck_pass1_merge_invalid_bitmaps(global_ctx, thread_ctx);
2991
2992         retval = e2fsck_pass1_merge_bitmap(global_fs,
2993                                 &thread_ctx->inode_used_map,
2994                                 &global_ctx->inode_used_map);
2995         if (retval)
2996                 return retval;
2997
2998         retval = e2fsck_pass1_merge_bitmap(global_fs,
2999                                 &thread_ctx->inode_bad_map,
3000                                 &global_ctx->inode_bad_map);
3001         if (retval)
3002                 return retval;
3003         retval = e2fsck_pass1_merge_bitmap(global_fs,
3004                                         &thread_ctx->inode_dir_map,
3005                                         &global_ctx->inode_dir_map);
3006         if (retval)
3007                 return retval;
3008         retval = e2fsck_pass1_merge_bitmap(global_fs,
3009                                 &thread_ctx->inode_bb_map,
3010                                 &global_ctx->inode_bb_map);
3011         if (retval)
3012                 return retval;
3013         retval = e2fsck_pass1_merge_bitmap(global_fs,
3014                                 &thread_ctx->inode_imagic_map,
3015                                 &global_ctx->inode_imagic_map);
3016         if (retval)
3017                 return retval;
3018         retval = e2fsck_pass1_merge_bitmap(global_fs,
3019                                 &thread_ctx->inode_reg_map,
3020                                 &global_ctx->inode_reg_map);
3021         if (retval)
3022                 return retval;
3023         retval = e2fsck_pass1_merge_bitmap(global_fs,
3024                                 &thread_ctx->inodes_to_rebuild,
3025                                 &global_ctx->inodes_to_rebuild);
3026         if (retval)
3027                 return retval;
3028         retval = e2fsck_pass1_merge_bitmap(global_fs,
3029                                 &thread_ctx->block_ea_map,
3030                                 &global_ctx->block_ea_map);
3031         if (retval)
3032                 return retval;
3033
3034         if (ext2fs_has_feature_shared_blocks(global_fs->super) &&
3035             !(global_ctx->options & E2F_OPT_UNSHARE_BLOCKS))
3036                 return 0;
3037         /*
3038          * This need be done after merging block_ea_map
3039          * because ea block might be shared, we need exclude
3040          * them from dup blocks.
3041          */
3042         e2fsck_pass1_block_map_w_lock(thread_ctx);
3043         retval = ext2fs_merge_bitmap(thread_ctx->block_found_map,
3044                                      global_ctx->block_found_map,
3045                                      global_ctx->block_dup_map,
3046                                      global_ctx->block_ea_map);
3047         e2fsck_pass1_block_map_w_unlock(thread_ctx);
3048         if (retval == EEXIST)
3049                 global_ctx->flags |= E2F_FLAG_DUP_BLOCK;
3050
3051         return 0;
3052 }
3053
3054 static int e2fsck_pass1_thread_join(e2fsck_t global_ctx, e2fsck_t thread_ctx)
3055 {
3056         errcode_t       retval;
3057
3058         retval = e2fsck_pass1_merge_context(global_ctx, thread_ctx);
3059         ext2fs_free_mem(&thread_ctx->fs);
3060         if (thread_ctx->logf)
3061                 fclose(thread_ctx->logf);
3062         if (thread_ctx->problem_logf) {
3063                 fputs("</problem_log>\n", thread_ctx->problem_logf);
3064                 fclose(thread_ctx->problem_logf);
3065         }
3066         e2fsck_pass1_free_bitmap(&thread_ctx->inode_used_map);
3067         e2fsck_pass1_free_bitmap(&thread_ctx->inode_bad_map);
3068         e2fsck_pass1_free_bitmap(&thread_ctx->inode_dir_map);
3069         e2fsck_pass1_free_bitmap(&thread_ctx->inode_bb_map);
3070         e2fsck_pass1_free_bitmap(&thread_ctx->inode_imagic_map);
3071         e2fsck_pass1_free_bitmap(&thread_ctx->inode_reg_map);
3072         e2fsck_pass1_free_bitmap(&thread_ctx->inodes_to_rebuild);
3073         e2fsck_pass1_free_bitmap(&thread_ctx->block_found_map);
3074         e2fsck_pass1_free_bitmap(&thread_ctx->block_ea_map);
3075         if (thread_ctx->refcount)
3076                 ea_refcount_free(thread_ctx->refcount);
3077         if (thread_ctx->refcount_extra)
3078                 ea_refcount_free(thread_ctx->refcount_extra);
3079         if (thread_ctx->ea_inode_refs)
3080                 ea_refcount_free(thread_ctx->ea_inode_refs);
3081         if (thread_ctx->refcount_orig)
3082                 ea_refcount_free(thread_ctx->refcount_orig);
3083         e2fsck_free_dir_info(thread_ctx);
3084         ext2fs_free_icount(thread_ctx->inode_count);
3085         ext2fs_free_icount(thread_ctx->inode_link_info);
3086         if (thread_ctx->dirs_to_hash)
3087                 ext2fs_badblocks_list_free(thread_ctx->dirs_to_hash);
3088         quota_release_context(&thread_ctx->qctx);
3089         ext2fs_free_mem(&thread_ctx->invalid_block_bitmap_flag);
3090         ext2fs_free_mem(&thread_ctx->invalid_inode_bitmap_flag);
3091         ext2fs_free_mem(&thread_ctx->invalid_inode_table_flag);
3092         ext2fs_free_mem(&thread_ctx);
3093
3094         return retval;
3095 }
3096
3097 static int e2fsck_pass1_threads_join(struct e2fsck_thread_info *infos,
3098                                      e2fsck_t global_ctx)
3099 {
3100         errcode_t                        rc;
3101         errcode_t                        ret = 0;
3102         int                              i;
3103         struct e2fsck_thread_info       *pinfo;
3104         int                              num_threads = global_ctx->fs_num_threads;
3105
3106         /* merge invalid bitmaps will recalculate it */
3107         global_ctx->invalid_bitmaps = 0;
3108         for (i = 0; i < num_threads; i++) {
3109                 pinfo = &infos[i];
3110
3111                 if (!pinfo->eti_started)
3112                         continue;
3113
3114                 rc = pthread_join(pinfo->eti_thread_id, NULL);
3115                 if (rc) {
3116                         com_err(global_ctx->program_name, rc,
3117                                 _("while joining thread\n"));
3118                         if (ret == 0)
3119                                 ret = rc;
3120                 }
3121                 rc = e2fsck_pass1_thread_join(global_ctx, infos[i].eti_thread_ctx);
3122                 if (rc) {
3123                         com_err(global_ctx->program_name, rc,
3124                                 _("while joining pass1 thread\n"));
3125                         if (ret == 0)
3126                                 ret = rc;
3127                 }
3128         }
3129         free(infos);
3130
3131         return ret;
3132 }
3133
3134 static void *e2fsck_pass1_thread(void *arg)
3135 {
3136         struct e2fsck_thread_info       *info = arg;
3137         e2fsck_t                         thread_ctx = info->eti_thread_ctx;
3138 #ifdef DEBUG_THREADS
3139         struct e2fsck_thread_debug      *thread_debug = info->eti_debug;
3140 #endif
3141
3142 #ifdef DEBUG_THREADS
3143         pthread_mutex_lock(&thread_debug->etd_mutex);
3144         while (info->eti_thread_index > thread_debug->etd_finished_threads) {
3145                 pthread_cond_wait(&thread_debug->etd_cond,
3146                                   &thread_debug->etd_mutex);
3147         }
3148         pthread_mutex_unlock(&thread_debug->etd_mutex);
3149 #endif
3150
3151 #ifdef HAVE_SETJMP_H
3152         /*
3153          * When fatal_error() happens, jump to here. The thread
3154          * context's flags will be saved, but its abort_loc will
3155          * be overwritten by original jump buffer for the later
3156          * tests.
3157          */
3158         if (setjmp(thread_ctx->abort_loc)) {
3159                 thread_ctx->flags &= ~E2F_FLAG_SETJMP_OK;
3160                 goto out;
3161         }
3162         thread_ctx->flags |= E2F_FLAG_SETJMP_OK;
3163 #endif
3164
3165         e2fsck_pass1_run(thread_ctx);
3166
3167 out:
3168         if (thread_ctx->options & E2F_OPT_MULTITHREAD)
3169                 log_out(thread_ctx,
3170                         _("Scanned group range [%lu, %lu), inodes %lu\n"),
3171                         thread_ctx->thread_info.et_group_start,
3172                         thread_ctx->thread_info.et_group_end,
3173                         thread_ctx->thread_info.et_inode_number);
3174
3175 #ifdef DEBUG_THREADS
3176         pthread_mutex_lock(&thread_debug->etd_mutex);
3177         thread_debug->etd_finished_threads++;
3178         pthread_cond_broadcast(&thread_debug->etd_cond);
3179         pthread_mutex_unlock(&thread_debug->etd_mutex);
3180 #endif
3181
3182         return NULL;
3183 }
3184
3185 static int e2fsck_pass1_threads_start(struct e2fsck_thread_info **pinfo,
3186                                       e2fsck_t global_ctx)
3187 {
3188         struct e2fsck_thread_info       *infos;
3189         pthread_attr_t                   attr;
3190         errcode_t                        retval;
3191         errcode_t                        ret;
3192         struct e2fsck_thread_info       *tmp_pinfo;
3193         int                              i;
3194         e2fsck_t                         thread_ctx;
3195         dgrp_t                           average_group;
3196         int                              num_threads = global_ctx->fs_num_threads;
3197 #ifdef DEBUG_THREADS
3198         struct e2fsck_thread_debug       thread_debug =
3199                 {PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0};
3200
3201         thread_debug.etd_finished_threads = 0;
3202 #endif
3203
3204         retval = pthread_attr_init(&attr);
3205         if (retval) {
3206                 com_err(global_ctx->program_name, retval,
3207                         _("while setting pthread attribute\n"));
3208                 return retval;
3209         }
3210
3211         infos = calloc(num_threads, sizeof(struct e2fsck_thread_info));
3212         if (infos == NULL) {
3213                 retval = -ENOMEM;
3214                 com_err(global_ctx->program_name, retval,
3215                         _("while allocating memory for threads\n"));
3216                 pthread_attr_destroy(&attr);
3217                 return retval;
3218         }
3219
3220         average_group = ext2fs_get_avg_group(global_ctx->fs);
3221         for (i = 0; i < num_threads; i++) {
3222                 tmp_pinfo = &infos[i];
3223                 tmp_pinfo->eti_thread_index = i;
3224 #ifdef DEBUG_THREADS
3225                 tmp_pinfo->eti_debug = &thread_debug;
3226 #endif
3227                 retval = e2fsck_pass1_thread_prepare(global_ctx, &thread_ctx,
3228                                                      i, num_threads,
3229                                                      average_group);
3230                 if (retval) {
3231                         com_err(global_ctx->program_name, retval,
3232                                 _("while preparing pass1 thread\n"));
3233                         break;
3234                 }
3235                 tmp_pinfo->eti_thread_ctx = thread_ctx;
3236
3237                 retval = pthread_create(&tmp_pinfo->eti_thread_id, &attr,
3238                                         &e2fsck_pass1_thread, tmp_pinfo);
3239                 if (retval) {
3240                         com_err(global_ctx->program_name, retval,
3241                                 _("while creating thread\n"));
3242                         e2fsck_pass1_thread_join(global_ctx, thread_ctx);
3243                         break;
3244                 }
3245
3246                 tmp_pinfo->eti_started = 1;
3247         }
3248
3249         /* destroy the thread attribute object, since it is no longer needed */
3250         ret = pthread_attr_destroy(&attr);
3251         if (ret) {
3252                 com_err(global_ctx->program_name, ret,
3253                         _("while destroying thread attribute\n"));
3254                 if (retval == 0)
3255                         retval = ret;
3256         }
3257
3258         if (retval) {
3259                 e2fsck_pass1_threads_join(infos, global_ctx);
3260                 return retval;
3261         }
3262         *pinfo = infos;
3263         return 0;
3264 }
3265
3266 static void e2fsck_pass1_multithread(e2fsck_t global_ctx)
3267 {
3268         struct e2fsck_thread_info *infos = NULL;
3269         errcode_t retval;
3270
3271         retval = e2fsck_pass1_threads_start(&infos, global_ctx);
3272         if (retval) {
3273                 com_err(global_ctx->program_name, retval,
3274                         _("while starting pass1 threads\n"));
3275                 goto out_abort;
3276         }
3277
3278         retval = e2fsck_pass1_threads_join(infos, global_ctx);
3279         if (retval) {
3280                 com_err(global_ctx->program_name, retval,
3281                         _("while joining pass1 threads\n"));
3282                 goto out_abort;
3283         }
3284         return;
3285 out_abort:
3286         global_ctx->flags |= E2F_FLAG_ABORT;
3287         return;
3288 }
3289 #endif
3290
3291 void e2fsck_pass1(e2fsck_t ctx)
3292 {
3293         errcode_t retval;
3294         int need_single = 1;
3295
3296         retval = e2fsck_pass1_prepare(ctx);
3297         if (retval)
3298                 return;
3299 #ifdef HAVE_PTHREAD
3300         if (ctx->fs_num_threads > 1 ||
3301             ctx->options & E2F_OPT_MULTITHREAD) {
3302                 need_single = 0;
3303                 e2fsck_pass1_multithread(ctx);
3304         }
3305 #endif
3306         if (need_single)
3307                 e2fsck_pass1_run(ctx);
3308         e2fsck_pass1_post(ctx);
3309 }
3310
3311 #undef FINISH_INODE_LOOP
3312
3313 /*
3314  * When the inode_scan routines call this callback at the end of the
3315  * glock group, call process_inodes.
3316  */
3317 static errcode_t scan_callback(ext2_filsys fs,
3318                                ext2_inode_scan scan EXT2FS_ATTR((unused)),
3319                                dgrp_t group, void * priv_data)
3320 {
3321         struct scan_callback_struct *scan_struct;
3322         e2fsck_t ctx;
3323         struct e2fsck_thread *tinfo;
3324
3325         scan_struct = (struct scan_callback_struct *) priv_data;
3326         ctx = scan_struct->ctx;
3327
3328         process_inodes((e2fsck_t) fs->priv_data, scan_struct->block_buf,
3329                        scan_struct->inodes_to_process,
3330                        scan_struct->process_inode_count);
3331
3332         if (ctx->progress)
3333                 if ((ctx->progress)(ctx, 1, group+1,
3334                                     ctx->fs->group_desc_count))
3335                         return EXT2_ET_CANCEL_REQUESTED;
3336
3337 #ifdef HAVE_PTHREAD
3338         if (ctx->global_ctx) {
3339                 tinfo = &ctx->thread_info;
3340                 tinfo->et_group_next++;
3341                 if (ctx->options & E2F_OPT_DEBUG &&
3342                     ctx->options & E2F_OPT_MULTITHREAD)
3343                         log_out(ctx, _("group %d finished\n"),
3344                                 tinfo->et_group_next);
3345                 if (tinfo->et_group_next >= tinfo->et_group_end)
3346                         return EXT2_ET_SCAN_FINISHED;
3347         }
3348 #endif
3349
3350         return 0;
3351 }
3352
3353 /*
3354  * Process the inodes in the "inodes to process" list.
3355  */
3356 static void process_inodes(e2fsck_t ctx, char *block_buf,
3357                            struct process_inode_block *inodes_to_process,
3358                            int *process_inode_count)
3359 {
3360         int                     i;
3361         struct ext2_inode       *old_stashed_inode;
3362         ext2_ino_t              old_stashed_ino;
3363         const char              *old_operation;
3364         char                    buf[80];
3365         struct problem_context  pctx;
3366
3367 #if 0
3368         printf("begin process_inodes: ");
3369 #endif
3370         if (*process_inode_count == 0)
3371                 return;
3372         old_operation = ehandler_operation(0);
3373         old_stashed_inode = ctx->stashed_inode;
3374         old_stashed_ino = ctx->stashed_ino;
3375         qsort(inodes_to_process, *process_inode_count,
3376                       sizeof(struct process_inode_block), process_inode_cmp);
3377         clear_problem_context(&pctx);
3378         for (i=0; i < *process_inode_count; i++) {
3379                 pctx.inode = ctx->stashed_inode =
3380                         (struct ext2_inode *) &inodes_to_process[i].inode;
3381                 pctx.ino = ctx->stashed_ino = inodes_to_process[i].ino;
3382
3383 #if 0
3384                 printf("%u ", pctx.ino);
3385 #endif
3386                 sprintf(buf, _("reading indirect blocks of inode %u"),
3387                         pctx.ino);
3388                 ehandler_operation(buf);
3389                 check_blocks(ctx, &pctx, block_buf,
3390                              &inodes_to_process[i].ea_ibody_quota);
3391                 if (e2fsck_should_abort(ctx))
3392                         break;
3393         }
3394         ctx->stashed_inode = old_stashed_inode;
3395         ctx->stashed_ino = old_stashed_ino;
3396         *process_inode_count = 0;
3397 #if 0
3398         printf("end process inodes\n");
3399 #endif
3400         ehandler_operation(old_operation);
3401 }
3402
3403 static EXT2_QSORT_TYPE process_inode_cmp(const void *a, const void *b)
3404 {
3405         const struct process_inode_block *ib_a =
3406                 (const struct process_inode_block *) a;
3407         const struct process_inode_block *ib_b =
3408                 (const struct process_inode_block *) b;
3409         int     ret;
3410
3411         ret = (ib_a->inode.i_block[EXT2_IND_BLOCK] -
3412                ib_b->inode.i_block[EXT2_IND_BLOCK]);
3413         if (ret == 0)
3414                 /*
3415                  * We only call process_inodes() for non-extent
3416                  * inodes, so it's OK to pass NULL to
3417                  * ext2fs_file_acl_block() here.
3418                  */
3419                 ret = ext2fs_file_acl_block(0, ext2fs_const_inode(&ib_a->inode)) -
3420                         ext2fs_file_acl_block(0, ext2fs_const_inode(&ib_b->inode));
3421         if (ret == 0)
3422                 ret = ib_a->ino - ib_b->ino;
3423         return ret;
3424 }
3425
3426 /*
3427  * Mark an inode as being bad in some what
3428  */
3429 static void mark_inode_bad(e2fsck_t ctx, ino_t ino)
3430 {
3431         struct          problem_context pctx;
3432
3433         if (!ctx->inode_bad_map) {
3434                 clear_problem_context(&pctx);
3435
3436                 pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
3437                                 _("bad inode map"), EXT2FS_BMAP64_RBTREE,
3438                                 "inode_bad_map", &ctx->inode_bad_map);
3439                 if (pctx.errcode) {
3440                         pctx.num = 3;
3441                         fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
3442                         /* Should never get here */
3443                         ctx->flags |= E2F_FLAG_ABORT;
3444                         return;
3445                 }
3446         }
3447         ext2fs_mark_inode_bitmap2(ctx->inode_bad_map, ino);
3448 }
3449
3450 static void add_casefolded_dir(e2fsck_t ctx, ino_t ino)
3451 {
3452         struct          problem_context pctx;
3453
3454         if (!ctx->casefolded_dirs) {
3455                 pctx.errcode = ext2fs_u32_list_create(&ctx->casefolded_dirs, 0);
3456                 if (pctx.errcode)
3457                         goto error;
3458         }
3459         pctx.errcode = ext2fs_u32_list_add(ctx->casefolded_dirs, ino);
3460         if (pctx.errcode == 0)
3461                 return;
3462 error:
3463         fix_problem(ctx, PR_1_ALLOCATE_CASEFOLDED_DIRLIST, &pctx);
3464         /* Should never get here */
3465         ctx->flags |= E2F_FLAG_ABORT;
3466 }
3467
3468 /*
3469  * This procedure will allocate the inode "bb" (badblock) map table
3470  */
3471 static void alloc_bb_map(e2fsck_t ctx)
3472 {
3473         struct          problem_context pctx;
3474
3475         clear_problem_context(&pctx);
3476         pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
3477                         _("inode in bad block map"), EXT2FS_BMAP64_RBTREE,
3478                         "inode_bb_map", &ctx->inode_bb_map);
3479         if (pctx.errcode) {
3480                 pctx.num = 4;
3481                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
3482                 /* Should never get here */
3483                 ctx->flags |= E2F_FLAG_ABORT;
3484                 return;
3485         }
3486 }
3487
3488 /*
3489  * This procedure will allocate the inode imagic table
3490  */
3491 static void alloc_imagic_map(e2fsck_t ctx)
3492 {
3493         struct          problem_context pctx;
3494
3495         clear_problem_context(&pctx);
3496         pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
3497                         _("imagic inode map"), EXT2FS_BMAP64_RBTREE,
3498                         "inode_imagic_map", &ctx->inode_imagic_map);
3499         if (pctx.errcode) {
3500                 pctx.num = 5;
3501                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
3502                 /* Should never get here */
3503                 ctx->flags |= E2F_FLAG_ABORT;
3504                 return;
3505         }
3506 }
3507
3508 /*
3509  * Marks a block as in use, setting the dup_map if it's been set
3510  * already.  Called by process_block and process_bad_block.
3511  *
3512  * WARNING: Assumes checks have already been done to make sure block
3513  * is valid.  This is true in both process_block and process_bad_block.
3514  */
3515 static _INLINE_ void mark_block_used(e2fsck_t ctx, blk64_t block)
3516 {
3517         struct problem_context pctx;
3518         e2fsck_t global_ctx = ctx->global_ctx ? ctx->global_ctx : ctx;
3519
3520         clear_problem_context(&pctx);
3521
3522         if (is_blocks_used(ctx, block, 1)) {
3523                 if (ext2fs_has_feature_shared_blocks(ctx->fs->super) &&
3524                     !(ctx->options & E2F_OPT_UNSHARE_BLOCKS)) {
3525                         return;
3526                 }
3527                 ctx->flags |= E2F_FLAG_DUP_BLOCK;
3528                 e2fsck_pass1_block_map_w_lock(ctx);
3529                 ext2fs_fast_mark_block_bitmap2(global_ctx->block_dup_map, block);
3530                 e2fsck_pass1_block_map_w_unlock(ctx);
3531         } else {
3532                 ext2fs_fast_mark_block_bitmap2(ctx->block_found_map, block);
3533         }
3534 }
3535
3536 /*
3537  * When cluster size is greater than one block, it is caller's responsibility
3538  * to make sure block parameter starts at a cluster boundary.
3539  */
3540 static _INLINE_ void mark_blocks_used(e2fsck_t ctx, blk64_t block,
3541                                       unsigned int num)
3542 {
3543         if (!is_blocks_used(ctx, block, num)) {
3544                 ext2fs_mark_block_bitmap_range2(ctx->block_found_map, block, num);
3545         } else {
3546                 unsigned int i;
3547
3548                 for (i = 0; i < num; i += EXT2FS_CLUSTER_RATIO(ctx->fs))
3549                         mark_block_used(ctx, block + i);
3550         }
3551 }
3552
3553 static errcode_t _INLINE_ e2fsck_write_ext_attr3(e2fsck_t ctx, blk64_t block,
3554                                                  void *inbuf, ext2_ino_t inum)
3555 {
3556         errcode_t retval;
3557         ext2_filsys fs = ctx->fs;
3558
3559         e2fsck_pass1_fix_lock(ctx);
3560         retval = ext2fs_write_ext_attr3(fs, block, inbuf, inum);
3561         e2fsck_pass1_fix_unlock(ctx);
3562
3563         return retval;
3564 }
3565 /*
3566  * Adjust the extended attribute block's reference counts at the end
3567  * of pass 1, either by subtracting out references for EA blocks that
3568  * are still referenced in ctx->refcount, or by adding references for
3569  * EA blocks that had extra references as accounted for in
3570  * ctx->refcount_extra.
3571  */
3572 static void adjust_extattr_refcount(e2fsck_t ctx, ext2_refcount_t refcount,
3573                                     char *block_buf, int adjust_sign)
3574 {
3575         struct ext2_ext_attr_header     *header;
3576         struct problem_context          pctx;
3577         ext2_filsys                     fs = ctx->fs;
3578         blk64_t                         blk;
3579         __u32                           should_be;
3580         ea_value_t                      count;
3581
3582         clear_problem_context(&pctx);
3583
3584         ea_refcount_intr_begin(refcount);
3585         while (1) {
3586                 if ((blk = ea_refcount_intr_next(refcount, &count)) == 0)
3587                         break;
3588                 pctx.blk = blk;
3589                 pctx.errcode = ext2fs_read_ext_attr3(fs, blk, block_buf,
3590                                                      pctx.ino);
3591                 if (pctx.errcode) {
3592                         fix_problem(ctx, PR_1_EXTATTR_READ_ABORT, &pctx);
3593                         return;
3594                 }
3595                 header = (struct ext2_ext_attr_header *) block_buf;
3596                 pctx.blkcount = header->h_refcount;
3597                 should_be = header->h_refcount + adjust_sign * (int)count;
3598                 pctx.num = should_be;
3599                 if (fix_problem(ctx, PR_1_EXTATTR_REFCOUNT, &pctx)) {
3600                         header->h_refcount = should_be;
3601                         pctx.errcode = e2fsck_write_ext_attr3(ctx, blk,
3602                                                              block_buf,
3603                                                              pctx.ino);
3604                         if (pctx.errcode) {
3605                                 fix_problem(ctx, PR_1_EXTATTR_WRITE_ABORT,
3606                                             &pctx);
3607                                 continue;
3608                         }
3609                 }
3610         }
3611 }
3612
3613 /*
3614  * Handle processing the extended attribute blocks
3615  */
3616 static int check_ext_attr(e2fsck_t ctx, struct problem_context *pctx,
3617                            char *block_buf, struct ea_quota *ea_block_quota)
3618 {
3619         ext2_filsys fs = ctx->fs;
3620         ext2_ino_t      ino = pctx->ino;
3621         struct ext2_inode *inode = pctx->inode;
3622         blk64_t         blk;
3623         char *          end;
3624         struct ext2_ext_attr_header *header;
3625         struct ext2_ext_attr_entry *first, *entry;
3626         blk64_t         quota_blocks = EXT2FS_C2B(fs, 1);
3627         __u64           quota_inodes = 0;
3628         region_t        region = 0;
3629         int             failed_csum = 0;
3630
3631         ea_block_quota->blocks = 0;
3632         ea_block_quota->inodes = 0;
3633
3634         blk = ext2fs_file_acl_block(fs, inode);
3635         if (blk == 0)
3636                 return 0;
3637
3638         /*
3639          * If the Extended attribute flag isn't set, then a non-zero
3640          * file acl means that the inode is corrupted.
3641          *
3642          * Or if the extended attribute block is an invalid block,
3643          * then the inode is also corrupted.
3644          */
3645         if (!ext2fs_has_feature_xattr(fs->super) ||
3646             (blk < fs->super->s_first_data_block) ||
3647             (blk >= ext2fs_blocks_count(fs->super))) {
3648                 mark_inode_bad(ctx, ino);
3649                 return 0;
3650         }
3651
3652         /* If ea bitmap hasn't been allocated, create it */
3653         if (!ctx->block_ea_map) {
3654                 pctx->errcode = e2fsck_allocate_block_bitmap(fs,
3655                                         _("ext attr block map"),
3656                                         EXT2FS_BMAP64_RBTREE, "block_ea_map",
3657                                         &ctx->block_ea_map);
3658                 if (pctx->errcode) {
3659                         pctx->num = 2;
3660                         fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, pctx);
3661                         ctx->flags |= E2F_FLAG_ABORT;
3662                         return 0;
3663                 }
3664         }
3665
3666         /* Create the EA refcount structure if necessary */
3667         if (!ctx->refcount) {
3668                 pctx->errcode = ea_refcount_create(0,
3669                                         &ctx->refcount_orig);
3670                 if (pctx->errcode) {
3671                         pctx->num = 1;
3672                         fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
3673                         ctx->flags |= E2F_FLAG_ABORT;
3674                         return 0;
3675                 }
3676
3677                 pctx->errcode = ea_refcount_create(0, &ctx->refcount);
3678                 if (pctx->errcode) {
3679                         pctx->num = 1;
3680                         fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
3681                         ctx->flags |= E2F_FLAG_ABORT;
3682                         return 0;
3683                 }
3684         }
3685
3686 #if 0
3687         /* Debugging text */
3688         printf("Inode %u has EA block %u\n", ino, blk);
3689 #endif
3690
3691         /* Have we seen this EA block before? */
3692         if (ext2fs_fast_test_block_bitmap2(ctx->block_ea_map, blk)) {
3693                 ea_block_quota->blocks = EXT2FS_C2B(fs, 1);
3694                 ea_block_quota->inodes = 0;
3695
3696                 if (ctx->ea_block_quota_blocks) {
3697                         ea_refcount_fetch(ctx->ea_block_quota_blocks, blk,
3698                                           &quota_blocks);
3699                         if (quota_blocks)
3700                                 ea_block_quota->blocks = quota_blocks;
3701                 }
3702
3703                 if (ctx->ea_block_quota_inodes)
3704                         ea_refcount_fetch(ctx->ea_block_quota_inodes, blk,
3705                                           &ea_block_quota->inodes);
3706
3707                 if (ea_refcount_decrement(ctx->refcount, blk, 0) == 0)
3708                         return 1;
3709                 /* Ooops, this EA was referenced more than it stated */
3710                 if (!ctx->refcount_extra) {
3711                         pctx->errcode = ea_refcount_create(0,
3712                                            &ctx->refcount_extra);
3713                         if (pctx->errcode) {
3714                                 pctx->num = 2;
3715                                 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
3716                                 ctx->flags |= E2F_FLAG_ABORT;
3717                                 return 0;
3718                         }
3719                 }
3720                 ea_refcount_increment(ctx->refcount_extra, blk, 0);
3721                 return 1;
3722         }
3723
3724         /*
3725          * OK, we haven't seen this EA block yet.  So we need to
3726          * validate it
3727          */
3728         pctx->blk = blk;
3729         pctx->errcode = ext2fs_read_ext_attr3(fs, blk, block_buf, pctx->ino);
3730         if (pctx->errcode == EXT2_ET_EXT_ATTR_CSUM_INVALID) {
3731                 pctx->errcode = 0;
3732                 failed_csum = 1;
3733         } else if (pctx->errcode == EXT2_ET_BAD_EA_HEADER)
3734                 pctx->errcode = 0;
3735
3736         if (pctx->errcode &&
3737             fix_problem(ctx, PR_1_READ_EA_BLOCK, pctx)) {
3738                 pctx->errcode = 0;
3739                 goto clear_extattr;
3740         }
3741         header = (struct ext2_ext_attr_header *) block_buf;
3742         pctx->blk = ext2fs_file_acl_block(fs, inode);
3743         if (((ctx->ext_attr_ver == 1) &&
3744              (header->h_magic != EXT2_EXT_ATTR_MAGIC_v1)) ||
3745             ((ctx->ext_attr_ver == 2) &&
3746              (header->h_magic != EXT2_EXT_ATTR_MAGIC))) {
3747                 if (fix_problem(ctx, PR_1_BAD_EA_BLOCK, pctx))
3748                         goto clear_extattr;
3749         }
3750
3751         if (header->h_blocks != 1) {
3752                 if (fix_problem(ctx, PR_1_EA_MULTI_BLOCK, pctx))
3753                         goto clear_extattr;
3754         }
3755
3756         if (pctx->errcode && fix_problem(ctx, PR_1_READ_EA_BLOCK, pctx))
3757                 goto clear_extattr;
3758
3759         region = region_create(0, fs->blocksize);
3760         if (!region) {
3761                 fix_problem(ctx, PR_1_EA_ALLOC_REGION_ABORT, pctx);
3762                 ctx->flags |= E2F_FLAG_ABORT;
3763                 return 0;
3764         }
3765         if (region_allocate(region, 0, sizeof(struct ext2_ext_attr_header))) {
3766                 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
3767                         goto clear_extattr;
3768         }
3769
3770         first = (struct ext2_ext_attr_entry *)(header+1);
3771         end = block_buf + fs->blocksize;
3772         entry = first;
3773         while ((char *)entry < end && *(__u32 *)entry) {
3774                 __u32 hash;
3775
3776                 if (region_allocate(region, (char *)entry - (char *)header,
3777                                    EXT2_EXT_ATTR_LEN(entry->e_name_len))) {
3778                         if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
3779                                 goto clear_extattr;
3780                         break;
3781                 }
3782                 if ((ctx->ext_attr_ver == 1 &&
3783                      (entry->e_name_len == 0 || entry->e_name_index != 0)) ||
3784                     (ctx->ext_attr_ver == 2 &&
3785                      entry->e_name_index == 0)) {
3786                         if (fix_problem(ctx, PR_1_EA_BAD_NAME, pctx))
3787                                 goto clear_extattr;
3788                         break;
3789                 }
3790                 if (entry->e_value_inum == 0) {
3791                         if (entry->e_value_offs + entry->e_value_size >
3792                             fs->blocksize) {
3793                                 if (fix_problem(ctx, PR_1_EA_BAD_VALUE, pctx))
3794                                         goto clear_extattr;
3795                                 break;
3796                         }
3797                         if (entry->e_value_size &&
3798                             region_allocate(region, entry->e_value_offs,
3799                                             EXT2_EXT_ATTR_SIZE(entry->e_value_size))) {
3800                                 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION,
3801                                                 pctx))
3802                                         goto clear_extattr;
3803                         }
3804
3805                         hash = ext2fs_ext_attr_hash_entry(entry, block_buf +
3806                                                           entry->e_value_offs);
3807
3808                         if (entry->e_hash != hash) {
3809                                 pctx->num = entry->e_hash;
3810                                 if (fix_problem(ctx, PR_1_ATTR_HASH, pctx))
3811                                         goto clear_extattr;
3812                                 entry->e_hash = hash;
3813                         }
3814                 } else {
3815                         problem_t problem;
3816                         blk64_t entry_quota_blocks;
3817
3818                         problem = check_large_ea_inode(ctx, entry, pctx,
3819                                                        &entry_quota_blocks);
3820                         if (problem && fix_problem(ctx, problem, pctx))
3821                                 goto clear_extattr;
3822
3823                         quota_blocks += entry_quota_blocks;
3824                         quota_inodes++;
3825                 }
3826
3827                 entry = EXT2_EXT_ATTR_NEXT(entry);
3828         }
3829         if (region_allocate(region, (char *)entry - (char *)header, 4)) {
3830                 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
3831                         goto clear_extattr;
3832         }
3833         region_free(region);
3834
3835         /*
3836          * We only get here if there was no other errors that were fixed.
3837          * If there was a checksum fail, ask to correct it.
3838          */
3839         if (failed_csum &&
3840             fix_problem(ctx, PR_1_EA_BLOCK_ONLY_CSUM_INVALID, pctx)) {
3841                 pctx->errcode = e2fsck_write_ext_attr3(ctx, blk, block_buf,
3842                                                        pctx->ino);
3843                 if (pctx->errcode)
3844                         return 0;
3845         }
3846
3847         if (quota_blocks != EXT2FS_C2B(fs, 1U)) {
3848                 if (!ctx->ea_block_quota_blocks) {
3849                         pctx->errcode = ea_refcount_create(0,
3850                                                 &ctx->ea_block_quota_blocks);
3851                         if (pctx->errcode) {
3852                                 pctx->num = 3;
3853                                 goto refcount_fail;
3854                         }
3855                 }
3856                 ea_refcount_store(ctx->ea_block_quota_blocks, blk,
3857                                   quota_blocks);
3858         }
3859
3860         if (quota_inodes) {
3861                 if (!ctx->ea_block_quota_inodes) {
3862                         pctx->errcode = ea_refcount_create(0,
3863                                                 &ctx->ea_block_quota_inodes);
3864                         if (pctx->errcode) {
3865                                 pctx->num = 4;
3866 refcount_fail:
3867                                 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
3868                                 ctx->flags |= E2F_FLAG_ABORT;
3869                                 return 0;
3870                         }
3871                 }
3872
3873                 ea_refcount_store(ctx->ea_block_quota_inodes, blk,
3874                                   quota_inodes);
3875         }
3876         ea_block_quota->blocks = quota_blocks;
3877         ea_block_quota->inodes = quota_inodes;
3878
3879         inc_ea_inode_refs(ctx, pctx, first, end);
3880         ea_refcount_store(ctx->refcount, blk, header->h_refcount - 1);
3881         ea_refcount_store(ctx->refcount_orig, blk, header->h_refcount);
3882         /**
3883          * It might be racy that this block has been merged in the
3884          * global found map.
3885          */
3886         if (!is_blocks_used(ctx, blk, 1))
3887                 ext2fs_fast_mark_block_bitmap2(ctx->block_found_map, blk);
3888         ext2fs_fast_mark_block_bitmap2(ctx->block_ea_map, blk);
3889         return 1;
3890
3891 clear_extattr:
3892         if (region)
3893                 region_free(region);
3894         ext2fs_file_acl_block_set(fs, inode, 0);
3895         e2fsck_write_inode(ctx, ino, inode, "check_ext_attr");
3896         return 0;
3897 }
3898
3899 /* Returns 1 if bad htree, 0 if OK */
3900 static int handle_htree(e2fsck_t ctx, struct problem_context *pctx,
3901                         ext2_ino_t ino, struct ext2_inode *inode,
3902                         char *block_buf)
3903 {
3904         struct ext2_dx_root_info        *root;
3905         ext2_filsys                     fs = ctx->fs;
3906         errcode_t                       retval;
3907         blk64_t                         blk;
3908
3909         if ((!LINUX_S_ISDIR(inode->i_mode) &&
3910              fix_problem(ctx, PR_1_HTREE_NODIR, pctx)) ||
3911             (!ext2fs_has_feature_dir_index(fs->super) &&
3912              fix_problem(ctx, PR_1_HTREE_SET, pctx)))
3913                 return 1;
3914
3915         pctx->errcode = ext2fs_bmap2(fs, ino, inode, 0, 0, 0, 0, &blk);
3916
3917         if ((pctx->errcode) ||
3918             (blk == 0) ||
3919             (blk < fs->super->s_first_data_block) ||
3920             (blk >= ext2fs_blocks_count(fs->super))) {
3921                 if (fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
3922                         return 1;
3923                 else
3924                         return 0;
3925         }
3926
3927         retval = io_channel_read_blk64(fs->io, blk, 1, block_buf);
3928         if (retval && fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
3929                 return 1;
3930
3931         /* XXX should check that beginning matches a directory */
3932         root = (struct ext2_dx_root_info *) (block_buf + 24);
3933
3934         if ((root->reserved_zero || root->info_length < 8) &&
3935             fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
3936                 return 1;
3937
3938         pctx->num = root->hash_version;
3939         if ((root->hash_version != EXT2_HASH_LEGACY) &&
3940             (root->hash_version != EXT2_HASH_HALF_MD4) &&
3941             (root->hash_version != EXT2_HASH_TEA) &&
3942             (root->hash_version != EXT2_HASH_SIPHASH) &&
3943             fix_problem(ctx, PR_1_HTREE_HASHV, pctx))
3944                 return 1;
3945
3946         if (ext4_hash_in_dirent(inode)) {
3947                 if (root->hash_version != EXT2_HASH_SIPHASH &&
3948                     fix_problem(ctx, PR_1_HTREE_NEEDS_SIPHASH, pctx))
3949                         return 1;
3950         } else {
3951                 if (root->hash_version == EXT2_HASH_SIPHASH &&
3952                    fix_problem(ctx, PR_1_HTREE_CANNOT_SIPHASH, pctx))
3953                         return 1;
3954         }
3955
3956         if ((root->unused_flags & EXT2_HASH_FLAG_INCOMPAT) &&
3957             fix_problem(ctx, PR_1_HTREE_INCOMPAT, pctx))
3958                 return 1;
3959
3960         pctx->num = root->indirect_levels;
3961         /* if htree level is clearly too high, consider it to be broken */
3962         if (root->indirect_levels > EXT4_HTREE_LEVEL &&
3963             fix_problem(ctx, PR_1_HTREE_DEPTH, pctx))
3964                 return 1;
3965
3966         /* if level is only maybe too high, LARGE_DIR feature could be unset */
3967         if (root->indirect_levels > ext2_dir_htree_level(fs) &&
3968             !ext2fs_has_feature_largedir(fs->super)) {
3969                 int blockbits = EXT2_BLOCK_SIZE_BITS(fs->super) + 10;
3970                 int idx_pb = 1 << (blockbits - 3);
3971
3972                 /* compare inode size/blocks vs. max-sized 2-level htree */
3973                 if (EXT2_I_SIZE(pctx->inode) <
3974                     (idx_pb - 1) * (idx_pb - 2) << blockbits &&
3975                     pctx->inode->i_blocks <
3976                     (idx_pb - 1) * (idx_pb - 2) << (blockbits - 9) &&
3977                     fix_problem(ctx, PR_1_HTREE_DEPTH, pctx))
3978                         return 1;
3979         }
3980
3981         if (root->indirect_levels > EXT4_HTREE_LEVEL_COMPAT ||
3982             ext2fs_needs_large_file_feature(EXT2_I_SIZE(inode)))
3983                 ctx->large_dirs++;
3984
3985         return 0;
3986 }
3987
3988 void e2fsck_clear_inode(e2fsck_t ctx, ext2_ino_t ino,
3989                         struct ext2_inode *inode, int restart_flag,
3990                         const char *source)
3991 {
3992         inode->i_flags = 0;
3993         inode->i_links_count = 0;
3994         ext2fs_icount_store(ctx->inode_link_info, ino, 0);
3995         inode->i_dtime = ctx->now;
3996
3997         /*
3998          * If a special inode has such rotten block mappings that we
3999          * want to clear the whole inode, be sure to actually zap
4000          * the block maps because i_links_count isn't checked for
4001          * special inodes, and we'll end up right back here the next
4002          * time we run fsck.
4003          */
4004         if (ino < EXT2_FIRST_INODE(ctx->fs->super))
4005                 memset(inode->i_block, 0, sizeof(inode->i_block));
4006
4007         ext2fs_unmark_inode_bitmap2(ctx->inode_dir_map, ino);
4008         ext2fs_unmark_inode_bitmap2(ctx->inode_used_map, ino);
4009         if (ctx->inode_reg_map)
4010                 ext2fs_unmark_inode_bitmap2(ctx->inode_reg_map, ino);
4011         if (ctx->inode_bad_map)
4012                 ext2fs_unmark_inode_bitmap2(ctx->inode_bad_map, ino);
4013
4014         /*
4015          * If the inode was partially accounted for before processing
4016          * was aborted, we need to restart the pass 1 scan.
4017          */
4018         ctx->flags |= restart_flag;
4019
4020         if (ino == EXT2_BAD_INO)
4021                 memset(inode, 0, sizeof(struct ext2_inode));
4022
4023         e2fsck_write_inode(ctx, ino, inode, source);
4024 }
4025
4026 /*
4027  * Use the multiple-blocks reclamation code to fix alignment problems in
4028  * a bigalloc filesystem.  We want a logical cluster to map to *only* one
4029  * physical cluster, and we want the block offsets within that cluster to
4030  * line up.
4031  */
4032 static int has_unaligned_cluster_map(e2fsck_t ctx,
4033                                      blk64_t last_pblk, blk64_t last_lblk,
4034                                      blk64_t pblk, blk64_t lblk)
4035 {
4036         blk64_t cluster_mask;
4037
4038         if (!ctx->fs->cluster_ratio_bits)
4039                 return 0;
4040         cluster_mask = EXT2FS_CLUSTER_MASK(ctx->fs);
4041
4042         /*
4043          * If the block in the logical cluster doesn't align with the block in
4044          * the physical cluster...
4045          */
4046         if ((lblk & cluster_mask) != (pblk & cluster_mask))
4047                 return 1;
4048
4049         /*
4050          * If we cross a physical cluster boundary within a logical cluster...
4051          */
4052         if (last_pblk && (lblk & cluster_mask) != 0 &&
4053             EXT2FS_B2C(ctx->fs, lblk) == EXT2FS_B2C(ctx->fs, last_lblk) &&
4054             EXT2FS_B2C(ctx->fs, pblk) != EXT2FS_B2C(ctx->fs, last_pblk))
4055                 return 1;
4056
4057         return 0;
4058 }
4059
4060 static void scan_extent_node(e2fsck_t ctx, struct problem_context *pctx,
4061                              struct process_block_struct *pb,
4062                              blk64_t start_block, blk64_t end_block,
4063                              blk64_t eof_block,
4064                              ext2_extent_handle_t ehandle,
4065                              int try_repairs)
4066 {
4067         struct ext2fs_extent    extent;
4068         blk64_t                 blk, last_lblk;
4069         unsigned int            i, n;
4070         int                     is_dir, is_leaf;
4071         problem_t               problem;
4072         struct ext2_extent_info info;
4073         int                     failed_csum = 0;
4074
4075         if (pctx->errcode == EXT2_ET_EXTENT_CSUM_INVALID)
4076                 failed_csum = 1;
4077
4078         pctx->errcode = ext2fs_extent_get_info(ehandle, &info);
4079         if (pctx->errcode)
4080                 return;
4081         if (!(ctx->options & E2F_OPT_FIXES_ONLY) &&
4082             !pb->eti.force_rebuild) {
4083                 struct extent_tree_level *etl;
4084
4085                 etl = pb->eti.ext_info + info.curr_level;
4086                 etl->num_extents += info.num_entries;
4087                 etl->max_extents += info.max_entries;
4088                 /*
4089                  * Implementation wart: Splitting extent blocks when appending
4090                  * will leave the old block with one free entry.  Therefore
4091                  * unless the node is totally full, pretend that a non-root
4092                  * extent block can hold one fewer entry than it actually does,
4093                  * so that we don't repeatedly rebuild the extent tree.
4094                  */
4095                 if (info.curr_level && info.num_entries < info.max_entries)
4096                         etl->max_extents--;
4097         }
4098
4099         pctx->errcode = ext2fs_extent_get(ehandle, EXT2_EXTENT_FIRST_SIB,
4100                                           &extent);
4101         while ((pctx->errcode == 0 ||
4102                 pctx->errcode == EXT2_ET_EXTENT_CSUM_INVALID) &&
4103                info.num_entries-- > 0) {
4104                 is_leaf = extent.e_flags & EXT2_EXTENT_FLAGS_LEAF;
4105                 is_dir = LINUX_S_ISDIR(pctx->inode->i_mode);
4106                 last_lblk = extent.e_lblk + extent.e_len - 1;
4107
4108                 problem = 0;
4109                 pctx->blk = extent.e_pblk;
4110                 pctx->blk2 = extent.e_lblk;
4111                 pctx->num = extent.e_len;
4112                 pctx->blkcount = extent.e_lblk + extent.e_len;
4113
4114                 if (extent.e_pblk == 0 ||
4115                     extent.e_pblk < ctx->fs->super->s_first_data_block ||
4116                     extent.e_pblk >= ext2fs_blocks_count(ctx->fs->super))
4117                         problem = PR_1_EXTENT_BAD_START_BLK;
4118                 else if (extent.e_lblk < start_block)
4119                         problem = PR_1_OUT_OF_ORDER_EXTENTS;
4120                 else if ((end_block && last_lblk > end_block) &&
4121                          !(last_lblk > eof_block &&
4122                            ((extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT) ||
4123                             (pctx->inode->i_flags & EXT4_VERITY_FL))))
4124                         problem = PR_1_EXTENT_END_OUT_OF_BOUNDS;
4125                 else if (is_leaf && extent.e_len == 0)
4126                         problem = PR_1_EXTENT_LENGTH_ZERO;
4127                 else if (is_leaf &&
4128                          (extent.e_pblk + extent.e_len) >
4129                          ext2fs_blocks_count(ctx->fs->super))
4130                         problem = PR_1_EXTENT_ENDS_BEYOND;
4131                 else if (is_leaf && is_dir && !pctx->inode->i_size_high &&
4132                          !ext2fs_has_feature_largedir(ctx->fs->super) &&
4133                          ((extent.e_lblk + extent.e_len) >
4134                           (1U << (21 - ctx->fs->super->s_log_block_size))))
4135                         problem = PR_1_TOOBIG_DIR;
4136
4137                 if (is_leaf && problem == 0 && extent.e_len > 0) {
4138 #if 0
4139                         printf("extent_region(ino=%u, expect=%llu, "
4140                                "lblk=%llu, len=%u)\n", pb->ino,
4141                                (unsigned long long) pb->next_lblock,
4142                                (unsigned long long) extent.e_lblk,
4143                                extent.e_len);
4144 #endif
4145                         if (extent.e_lblk < pb->next_lblock)
4146                                 problem = PR_1_EXTENT_COLLISION;
4147                         else if (extent.e_lblk + extent.e_len > pb->next_lblock)
4148                                 pb->next_lblock = extent.e_lblk + extent.e_len;
4149                 }
4150
4151                 /*
4152                  * Uninitialized blocks in a directory?  Clear the flag and
4153                  * we'll interpret the blocks later.
4154                  */
4155                 if (try_repairs && is_dir && problem == 0 &&
4156                     (extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT) &&
4157                     fix_problem(ctx, PR_1_UNINIT_DBLOCK, pctx)) {
4158                         e2fsck_pass1_fix_lock(ctx);
4159                         extent.e_flags &= ~EXT2_EXTENT_FLAGS_UNINIT;
4160                         pb->inode_modified = 1;
4161                         pctx->errcode = ext2fs_extent_replace(ehandle, 0,
4162                                                               &extent);
4163                         e2fsck_pass1_fix_unlock(ctx);
4164                         if (pctx->errcode)
4165                                 return;
4166                         failed_csum = 0;
4167                 }
4168 #ifdef CONFIG_DEVELOPER_FEATURES
4169                 if (try_repairs && !is_dir && problem == 0 &&
4170                     (ctx->options & E2F_OPT_CLEAR_UNINIT) &&
4171                     (extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT) &&
4172                     fix_problem(ctx, PR_1_CLEAR_UNINIT_EXTENT, pctx)) {
4173                         extent.e_flags &= ~EXT2_EXTENT_FLAGS_UNINIT;
4174                         pb->inode_modified = 1;
4175                         pctx->errcode = ext2fs_extent_replace(ehandle, 0,
4176                                                               &extent);
4177                         if (pctx->errcode)
4178                                 return;
4179                         failed_csum = 0;
4180                 }
4181 #endif
4182                 if (try_repairs && problem) {
4183 report_problem:
4184                         if (fix_problem(ctx, problem, pctx)) {
4185                                 if (ctx->invalid_bitmaps) {
4186                                         /*
4187                                          * If fsck knows the bitmaps are bad,
4188                                          * skip to the next extent and
4189                                          * try to clear this extent again
4190                                          * after fixing the bitmaps, by
4191                                          * restarting fsck.
4192                                          */
4193                                         pctx->errcode = ext2fs_extent_get(
4194                                                           ehandle,
4195                                                           EXT2_EXTENT_NEXT_SIB,
4196                                                           &extent);
4197                                         ctx->flags |= E2F_FLAG_RESTART_LATER;
4198                                         if (pctx->errcode ==
4199                                                     EXT2_ET_NO_CURRENT_NODE) {
4200                                                 pctx->errcode = 0;
4201                                                 break;
4202                                         }
4203                                         continue;
4204                                 }
4205                                 e2fsck_pass1_fix_lock(ctx);
4206                                 e2fsck_read_bitmaps(ctx);
4207                                 pb->inode_modified = 1;
4208                                 pctx->errcode =
4209                                         ext2fs_extent_delete(ehandle, 0);
4210                                 e2fsck_pass1_fix_unlock(ctx);
4211                                 if (pctx->errcode) {
4212                                         pctx->str = "ext2fs_extent_delete";
4213                                         return;
4214                                 }
4215                                 e2fsck_pass1_fix_lock(ctx);
4216                                 pctx->errcode = ext2fs_extent_fix_parents(ehandle);
4217                                 e2fsck_pass1_fix_unlock(ctx);
4218                                 if (pctx->errcode &&
4219                                     pctx->errcode != EXT2_ET_NO_CURRENT_NODE) {
4220                                         pctx->str = "ext2fs_extent_fix_parents";
4221                                         return;
4222                                 }
4223                                 pctx->errcode = ext2fs_extent_get(ehandle,
4224                                                                   EXT2_EXTENT_CURRENT,
4225                                                                   &extent);
4226                                 if (pctx->errcode == EXT2_ET_NO_CURRENT_NODE) {
4227                                         pctx->errcode = 0;
4228                                         break;
4229                                 }
4230                                 failed_csum = 0;
4231                                 continue;
4232                         }
4233                         goto next;
4234                 }
4235
4236                 if (!is_leaf) {
4237                         blk64_t lblk = extent.e_lblk;
4238                         int next_try_repairs = 1;
4239
4240                         blk = extent.e_pblk;
4241
4242                         /*
4243                          * If this lower extent block collides with critical
4244                          * metadata, don't try to repair the damage.  Pass 1b
4245                          * will reallocate the block; then we can try again.
4246                          */
4247                         if (pb->ino != EXT2_RESIZE_INO &&
4248                             extent.e_pblk < ctx->fs->super->s_blocks_count &&
4249                             ext2fs_test_block_bitmap2(ctx->block_metadata_map,
4250                                                       extent.e_pblk)) {
4251                                 next_try_repairs = 0;
4252                                 pctx->blk = blk;
4253                                 fix_problem(ctx,
4254                                             PR_1_CRITICAL_METADATA_COLLISION,
4255                                             pctx);
4256                                 if ((ctx->options & E2F_OPT_NO) == 0)
4257                                         ctx->flags |= E2F_FLAG_RESTART_LATER;
4258                         }
4259                         pctx->errcode = ext2fs_extent_get(ehandle,
4260                                                   EXT2_EXTENT_DOWN, &extent);
4261                         if (pctx->errcode &&
4262                             pctx->errcode != EXT2_ET_EXTENT_CSUM_INVALID) {
4263                                 pctx->str = "EXT2_EXTENT_DOWN";
4264                                 problem = PR_1_EXTENT_HEADER_INVALID;
4265                                 if (!next_try_repairs)
4266                                         return;
4267                                 if (pctx->errcode == EXT2_ET_EXTENT_HEADER_BAD)
4268                                         goto report_problem;
4269                                 return;
4270                         }
4271                         /* The next extent should match this index's logical start */
4272                         if (extent.e_lblk != lblk) {
4273                                 struct ext2_extent_info e_info;
4274
4275                                 pctx->errcode = ext2fs_extent_get_info(ehandle,
4276                                                                        &e_info);
4277                                 if (pctx->errcode) {
4278                                         pctx->str = "ext2fs_extent_get_info";
4279                                         return;
4280                                 }
4281                                 pctx->blk = lblk;
4282                                 pctx->blk2 = extent.e_lblk;
4283                                 pctx->num = e_info.curr_level - 1;
4284                                 problem = PR_1_EXTENT_INDEX_START_INVALID;
4285                                 if (fix_problem(ctx, problem, pctx)) {
4286                                         e2fsck_pass1_fix_lock(ctx);
4287                                         pb->inode_modified = 1;
4288                                         pctx->errcode =
4289                                                 ext2fs_extent_fix_parents(ehandle);
4290                                         e2fsck_pass1_fix_unlock(ctx);
4291                                         if (pctx->errcode) {
4292                                                 pctx->str = "ext2fs_extent_fix_parents";
4293                                                 return;
4294                                         }
4295                                 }
4296                         }
4297                         scan_extent_node(ctx, pctx, pb, extent.e_lblk,
4298                                          last_lblk, eof_block, ehandle,
4299                                          next_try_repairs);
4300                         if (pctx->errcode)
4301                                 return;
4302                         pctx->errcode = ext2fs_extent_get(ehandle,
4303                                                   EXT2_EXTENT_UP, &extent);
4304                         if (pctx->errcode) {
4305                                 pctx->str = "EXT2_EXTENT_UP";
4306                                 return;
4307                         }
4308                         mark_block_used(ctx, blk);
4309                         pb->num_blocks++;
4310                         goto next;
4311                 }
4312
4313                 if ((pb->previous_block != 0) &&
4314                     (pb->previous_block+1 != extent.e_pblk)) {
4315                         if (ctx->options & E2F_OPT_FRAGCHECK) {
4316                                 char type = '?';
4317
4318                                 if (pb->is_dir)
4319                                         type = 'd';
4320                                 else if (pb->is_reg)
4321                                         type = 'f';
4322
4323                                 printf(("%6lu(%c): expecting %6lu "
4324                                         "actual extent "
4325                                         "phys %6lu log %lu len %lu\n"),
4326                                        (unsigned long) pctx->ino, type,
4327                                        (unsigned long) pb->previous_block+1,
4328                                        (unsigned long) extent.e_pblk,
4329                                        (unsigned long) extent.e_lblk,
4330                                        (unsigned long) extent.e_len);
4331                         }
4332                         pb->fragmented = 1;
4333                 }
4334                 /*
4335                  * If we notice a gap in the logical block mappings of an
4336                  * extent-mapped directory, offer to close the hole by
4337                  * moving the logical block down, otherwise we'll go mad in
4338                  * pass 3 allocating empty directory blocks to fill the hole.
4339                  */
4340                 if (try_repairs && is_dir &&
4341                     pb->last_block + 1 < extent.e_lblk) {
4342                         blk64_t new_lblk;
4343
4344                         new_lblk = pb->last_block + 1;
4345                         if (EXT2FS_CLUSTER_RATIO(ctx->fs) > 1)
4346                                 new_lblk = ((new_lblk +
4347                                              EXT2FS_CLUSTER_RATIO(ctx->fs) - 1) &
4348                                             ~EXT2FS_CLUSTER_MASK(ctx->fs)) |
4349                                            (extent.e_pblk &
4350                                             EXT2FS_CLUSTER_MASK(ctx->fs));
4351                         pctx->blk = extent.e_lblk;
4352                         pctx->blk2 = new_lblk;
4353                         if (fix_problem(ctx, PR_1_COLLAPSE_DBLOCK, pctx)) {
4354                                 e2fsck_pass1_fix_lock(ctx);
4355                                 extent.e_lblk = new_lblk;
4356                                 pb->inode_modified = 1;
4357                                 pctx->errcode = ext2fs_extent_replace(ehandle,
4358                                                                 0, &extent);
4359                                 e2fsck_pass1_fix_unlock(ctx);
4360                                 if (pctx->errcode) {
4361                                         pctx->errcode = 0;
4362                                         goto alloc_later;
4363                                 }
4364                                 e2fsck_pass1_fix_lock(ctx);
4365                                 pctx->errcode = ext2fs_extent_fix_parents(ehandle);
4366                                 e2fsck_pass1_fix_unlock(ctx);
4367                                 if (pctx->errcode)
4368                                         goto failed_add_dir_block;
4369                                 pctx->errcode = ext2fs_extent_goto(ehandle,
4370                                                                 extent.e_lblk);
4371                                 if (pctx->errcode)
4372                                         goto failed_add_dir_block;
4373                                 last_lblk = extent.e_lblk + extent.e_len - 1;
4374                                 failed_csum = 0;
4375                         }
4376                 }
4377 alloc_later:
4378                 if (is_dir) {
4379                         while (++pb->last_db_block <
4380                                (e2_blkcnt_t) extent.e_lblk) {
4381                                 pctx->errcode = ext2fs_add_dir_block2(
4382                                                         ctx->fs->dblist,
4383                                                         pb->ino, 0,
4384                                                         pb->last_db_block);
4385                                 if (pctx->errcode) {
4386                                         pctx->blk = 0;
4387                                         pctx->num = pb->last_db_block;
4388                                         goto failed_add_dir_block;
4389                                 }
4390                         }
4391
4392                         for (i = 0; i < extent.e_len; i++) {
4393                                 pctx->errcode = ext2fs_add_dir_block2(
4394                                                         ctx->fs->dblist,
4395                                                         pctx->ino,
4396                                                         extent.e_pblk + i,
4397                                                         extent.e_lblk + i);
4398                                 if (pctx->errcode) {
4399                                         pctx->blk = extent.e_pblk + i;
4400                                         pctx->num = extent.e_lblk + i;
4401                                 failed_add_dir_block:
4402                                         fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
4403                                         /* Should never get here */
4404                                         ctx->flags |= E2F_FLAG_ABORT;
4405                                         return;
4406                                 }
4407                         }
4408                         if (extent.e_len > 0)
4409                                 pb->last_db_block = extent.e_lblk + extent.e_len - 1;
4410                 }
4411                 if (has_unaligned_cluster_map(ctx, pb->previous_block,
4412                                               pb->last_block,
4413                                               extent.e_pblk,
4414                                               extent.e_lblk)) {
4415                         for (i = 0; i < extent.e_len; i++) {
4416                                 pctx->blk = extent.e_lblk + i;
4417                                 pctx->blk2 = extent.e_pblk + i;
4418                                 fix_problem(ctx, PR_1_MISALIGNED_CLUSTER, pctx);
4419                                 mark_block_used(ctx, extent.e_pblk + i);
4420                                 mark_block_used(ctx, extent.e_pblk + i);
4421                         }
4422                 }
4423
4424                 /*
4425                  * Check whether first cluster got marked in previous iteration.
4426                  */
4427                 if (ctx->fs->cluster_ratio_bits &&
4428                     pb->previous_block &&
4429                     (EXT2FS_B2C(ctx->fs, extent.e_pblk) ==
4430                      EXT2FS_B2C(ctx->fs, pb->previous_block)))
4431                         /* Set blk to the beginning of next cluster. */
4432                         blk = EXT2FS_C2B(
4433                                 ctx->fs,
4434                                 EXT2FS_B2C(ctx->fs, extent.e_pblk) + 1);
4435                 else
4436                         /* Set blk to the beginning of current cluster. */
4437                         blk = EXT2FS_C2B(ctx->fs,
4438                                          EXT2FS_B2C(ctx->fs, extent.e_pblk));
4439
4440                 if (blk < extent.e_pblk + extent.e_len) {
4441                         mark_blocks_used(ctx, blk,
4442                                          extent.e_pblk + extent.e_len - blk);
4443                         n = DIV_ROUND_UP(extent.e_pblk + extent.e_len - blk,
4444                                          EXT2FS_CLUSTER_RATIO(ctx->fs));
4445                         pb->num_blocks += n;
4446                 }
4447                 pb->last_block = extent.e_lblk + extent.e_len - 1;
4448                 pb->previous_block = extent.e_pblk + extent.e_len - 1;
4449                 start_block = pb->last_block = last_lblk;
4450                 if (is_leaf && !is_dir &&
4451                     !(extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT))
4452                         pb->last_init_lblock = last_lblk;
4453         next:
4454                 pctx->errcode = ext2fs_extent_get(ehandle,
4455                                                   EXT2_EXTENT_NEXT_SIB,
4456                                                   &extent);
4457         }
4458
4459         /* Failed csum but passes checks?  Ask to fix checksum. */
4460         if (failed_csum &&
4461             fix_problem(ctx, PR_1_EXTENT_ONLY_CSUM_INVALID, pctx)) {
4462                 e2fsck_pass1_fix_lock(ctx);
4463                 pb->inode_modified = 1;
4464                 pctx->errcode = ext2fs_extent_replace(ehandle, 0, &extent);
4465                 e2fsck_pass1_fix_unlock(ctx);
4466                 if (pctx->errcode)
4467                         return;
4468         }
4469
4470         if (pctx->errcode == EXT2_ET_EXTENT_NO_NEXT)
4471                 pctx->errcode = 0;
4472 }
4473
4474 static void check_blocks_extents(e2fsck_t ctx, struct problem_context *pctx,
4475                                  struct process_block_struct *pb)
4476 {
4477         struct ext2_extent_info info;
4478         struct ext2_inode       *inode = pctx->inode;
4479         ext2_extent_handle_t    ehandle;
4480         ext2_filsys             fs = ctx->fs;
4481         ext2_ino_t              ino = pctx->ino;
4482         errcode_t               retval;
4483         blk64_t                 eof_lblk;
4484         struct ext3_extent_header       *eh;
4485
4486         /* Check for a proper extent header... */
4487         eh = (struct ext3_extent_header *) &inode->i_block[0];
4488         retval = ext2fs_extent_header_verify(eh, sizeof(inode->i_block));
4489         if (retval) {
4490                 if (fix_problem(ctx, PR_1_MISSING_EXTENT_HEADER, pctx))
4491                         e2fsck_clear_inode(ctx, ino, inode, 0,
4492                                            "check_blocks_extents");
4493                 pctx->errcode = 0;
4494                 return;
4495         }
4496
4497         /* ...since this function doesn't fail if i_block is zeroed. */
4498         pctx->errcode = ext2fs_extent_open2(fs, ino, inode, &ehandle);
4499         if (pctx->errcode) {
4500                 if (fix_problem(ctx, PR_1_READ_EXTENT, pctx))
4501                         e2fsck_clear_inode(ctx, ino, inode, 0,
4502                                            "check_blocks_extents");
4503                 pctx->errcode = 0;
4504                 return;
4505         }
4506
4507         retval = ext2fs_extent_get_info(ehandle, &info);
4508         if (retval == 0) {
4509                 int max_depth = info.max_depth;
4510
4511                 if (max_depth >= MAX_EXTENT_DEPTH_COUNT)
4512                         max_depth = MAX_EXTENT_DEPTH_COUNT-1;
4513                 ctx->extent_depth_count[max_depth]++;
4514         }
4515
4516         /* Check maximum extent depth */
4517         pctx->blk = info.max_depth;
4518         pctx->blk2 = ext2fs_max_extent_depth(ehandle);
4519         if (pctx->blk2 < pctx->blk &&
4520             fix_problem(ctx, PR_1_EXTENT_BAD_MAX_DEPTH, pctx))
4521                 pb->eti.force_rebuild = 1;
4522
4523         /* Can we collect extent tree level stats? */
4524         pctx->blk = MAX_EXTENT_DEPTH_COUNT;
4525         if (pctx->blk2 > pctx->blk)
4526                 fix_problem(ctx, PR_1E_MAX_EXTENT_TREE_DEPTH, pctx);
4527         memset(pb->eti.ext_info, 0, sizeof(pb->eti.ext_info));
4528         pb->eti.ino = pb->ino;
4529
4530         pb->next_lblock = 0;
4531
4532         eof_lblk = ((EXT2_I_SIZE(inode) + fs->blocksize - 1) >>
4533                 EXT2_BLOCK_SIZE_BITS(fs->super)) - 1;
4534         scan_extent_node(ctx, pctx, pb, 0, 0, eof_lblk, ehandle, 1);
4535         if (pctx->errcode &&
4536             fix_problem(ctx, PR_1_EXTENT_ITERATE_FAILURE, pctx)) {
4537                 pb->num_blocks = 0;
4538                 inode->i_blocks = 0;
4539                 e2fsck_clear_inode(ctx, ino, inode, E2F_FLAG_RESTART,
4540                                    "check_blocks_extents");
4541                 pctx->errcode = 0;
4542         }
4543         ext2fs_extent_free(ehandle);
4544
4545         /* Rebuild unless it's a dir and we're rehashing it */
4546         if (LINUX_S_ISDIR(inode->i_mode) &&
4547             e2fsck_dir_will_be_rehashed(ctx, ino))
4548                 return;
4549
4550         if (ctx->options & E2F_OPT_CONVERT_BMAP)
4551                 e2fsck_rebuild_extents_later(ctx, ino);
4552         else
4553                 e2fsck_should_rebuild_extents(ctx, pctx, &pb->eti, &info);
4554 }
4555
4556 /*
4557  * In fact we don't need to check blocks for an inode with inline data
4558  * because this inode doesn't have any blocks.  In this function all
4559  * we need to do is add this inode into dblist when it is a directory.
4560  */
4561 static void check_blocks_inline_data(e2fsck_t ctx, struct problem_context *pctx,
4562                                      struct process_block_struct *pb)
4563 {
4564         int     flags;
4565         size_t  inline_data_size = 0;
4566
4567         if (!pb->is_dir) {
4568                 pctx->errcode = 0;
4569                 return;
4570         }
4571
4572         /* Process the dirents in i_block[] as the "first" block. */
4573         pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist, pb->ino, 0, 0);
4574         if (pctx->errcode)
4575                 goto err;
4576
4577         /* Process the dirents in the EA as a "second" block. */
4578         flags = ctx->fs->flags;
4579         ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
4580         pctx->errcode = ext2fs_inline_data_size(ctx->fs, pb->ino,
4581                                                 &inline_data_size);
4582         ctx->fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
4583                          (ctx->fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
4584         if (pctx->errcode) {
4585                 pctx->errcode = 0;
4586                 return;
4587         }
4588
4589         if (inline_data_size <= EXT4_MIN_INLINE_DATA_SIZE)
4590                 return;
4591
4592         pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist, pb->ino, 0, 1);
4593         if (pctx->errcode)
4594                 goto err;
4595
4596         return;
4597 err:
4598         pctx->blk = 0;
4599         pctx->num = 0;
4600         fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
4601         ctx->flags |= E2F_FLAG_ABORT;
4602 }
4603
4604 /*
4605  * This subroutine is called on each inode to account for all of the
4606  * blocks used by that inode.
4607  */
4608 static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
4609                          char *block_buf, const struct ea_quota *ea_ibody_quota)
4610 {
4611         ext2_filsys fs = ctx->fs;
4612         struct process_block_struct pb;
4613         ext2_ino_t      ino = pctx->ino;
4614         struct ext2_inode *inode = pctx->inode;
4615         unsigned        bad_size = 0;
4616         int             dirty_inode = 0;
4617         int             extent_fs;
4618         int             inlinedata_fs;
4619         __u64           size;
4620         struct ea_quota ea_block_quota;
4621
4622         pb.ino = ino;
4623         pb.num_blocks = EXT2FS_B2C(ctx->fs,
4624                                    ea_ibody_quota ? ea_ibody_quota->blocks : 0);
4625         pb.last_block = ~0;
4626         pb.last_init_lblock = -1;
4627         pb.last_db_block = -1;
4628         pb.num_illegal_blocks = 0;
4629         pb.suppress = 0; pb.clear = 0;
4630         pb.fragmented = 0;
4631         pb.compressed = 0;
4632         pb.previous_block = 0;
4633         pb.is_dir = LINUX_S_ISDIR(inode->i_mode);
4634         pb.is_reg = LINUX_S_ISREG(inode->i_mode);
4635         pb.max_blocks = 1U << (31 - fs->super->s_log_block_size);
4636         pb.inode = inode;
4637         pb.pctx = pctx;
4638         pb.ctx = ctx;
4639         pb.inode_modified = 0;
4640         pb.eti.force_rebuild = 0;
4641         pctx->ino = ino;
4642         pctx->errcode = 0;
4643
4644         extent_fs = ext2fs_has_feature_extents(ctx->fs->super);
4645         inlinedata_fs = ext2fs_has_feature_inline_data(ctx->fs->super);
4646
4647         if (check_ext_attr(ctx, pctx, block_buf, &ea_block_quota)) {
4648                 if (e2fsck_should_abort(ctx))
4649                         goto out;
4650                 pb.num_blocks += EXT2FS_B2C(ctx->fs, ea_block_quota.blocks);
4651         }
4652
4653         if (inlinedata_fs && (inode->i_flags & EXT4_INLINE_DATA_FL))
4654                 check_blocks_inline_data(ctx, pctx, &pb);
4655         else if (ext2fs_inode_has_valid_blocks2(fs, inode)) {
4656                 if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL))
4657                         check_blocks_extents(ctx, pctx, &pb);
4658                 else {
4659                         int flags;
4660                         /*
4661                          * If we've modified the inode, write it out before
4662                          * iterate() tries to use it.
4663                          */
4664                         if (dirty_inode) {
4665                                 e2fsck_write_inode(ctx, ino, inode,
4666                                                    "check_blocks");
4667                                 dirty_inode = 0;
4668                         }
4669                         flags = fs->flags;
4670                         fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
4671                         pctx->errcode = ext2fs_block_iterate3(fs, ino,
4672                                                 pb.is_dir ? BLOCK_FLAG_HOLE : 0,
4673                                                 block_buf, process_block, &pb);
4674                         /*
4675                          * We do not have uninitialized extents in non extent
4676                          * files.
4677                          */
4678                         pb.last_init_lblock = pb.last_block;
4679                         /*
4680                          * If iterate() changed a block mapping, we have to
4681                          * re-read the inode.  If we decide to clear the
4682                          * inode after clearing some stuff, we'll re-write the
4683                          * bad mappings into the inode!
4684                          */
4685                         if (pb.inode_modified)
4686                                 e2fsck_read_inode(ctx, ino, inode,
4687                                                   "check_blocks");
4688                         fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
4689                                     (fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
4690
4691                         if (ctx->options & E2F_OPT_CONVERT_BMAP) {
4692 #ifdef DEBUG
4693                                 printf("bmap rebuild ino=%d\n", ino);
4694 #endif
4695                                 if (!LINUX_S_ISDIR(inode->i_mode) ||
4696                                     !e2fsck_dir_will_be_rehashed(ctx, ino))
4697                                         e2fsck_rebuild_extents_later(ctx, ino);
4698                         }
4699                 }
4700         }
4701         end_problem_latch(ctx, PR_LATCH_BLOCK);
4702         end_problem_latch(ctx, PR_LATCH_TOOBIG);
4703         if (e2fsck_should_abort(ctx))
4704                 goto out;
4705         if (pctx->errcode)
4706                 fix_problem(ctx, PR_1_BLOCK_ITERATE, pctx);
4707
4708         if (pb.fragmented && pb.num_blocks < fs->super->s_blocks_per_group) {
4709                 if (LINUX_S_ISDIR(inode->i_mode))
4710                         ctx->fs_fragmented_dir++;
4711                 else
4712                         ctx->fs_fragmented++;
4713         }
4714
4715         if (pb.clear) {
4716                 e2fsck_clear_inode(ctx, ino, inode, E2F_FLAG_RESTART,
4717                                    "check_blocks");
4718                 return;
4719         }
4720
4721         if (inode->i_flags & EXT2_INDEX_FL) {
4722                 if (handle_htree(ctx, pctx, ino, inode, block_buf)) {
4723                         inode->i_flags &= ~EXT2_INDEX_FL;
4724                         dirty_inode++;
4725                 } else {
4726                         e2fsck_add_dx_dir(ctx, ino, inode, pb.last_block+1);
4727                 }
4728         }
4729
4730         if (!pb.num_blocks && pb.is_dir &&
4731             !(inode->i_flags & EXT4_INLINE_DATA_FL)) {
4732                 if (fix_problem(ctx, PR_1_ZERO_LENGTH_DIR, pctx)) {
4733                         e2fsck_clear_inode(ctx, ino, inode, 0, "check_blocks");
4734                         ctx->fs_directory_count--;
4735                         return;
4736                 }
4737         }
4738
4739         if (ino != quota_type2inum(PRJQUOTA, fs->super) &&
4740             (ino == EXT2_ROOT_INO || ino >= EXT2_FIRST_INODE(ctx->fs->super)) &&
4741             !(inode->i_flags & EXT4_EA_INODE_FL)) {
4742                 quota_data_add(ctx->qctx, (struct ext2_inode_large *) inode,
4743                                ino,
4744                                pb.num_blocks * EXT2_CLUSTER_SIZE(fs->super));
4745                 quota_data_inodes(ctx->qctx, (struct ext2_inode_large *) inode,
4746                                   ino, (ea_ibody_quota ?
4747                                         ea_ibody_quota->inodes : 0) +
4748                                                 ea_block_quota.inodes + 1);
4749         }
4750
4751         if (!ext2fs_has_feature_huge_file(fs->super) ||
4752             !(inode->i_flags & EXT4_HUGE_FILE_FL))
4753                 pb.num_blocks *= (fs->blocksize / 512);
4754         pb.num_blocks *= EXT2FS_CLUSTER_RATIO(fs);
4755 #if 0
4756         printf("inode %u, i_size = %u, last_block = %llu, i_blocks=%llu, num_blocks = %llu\n",
4757                ino, inode->i_size, (unsigned long long) pb.last_block,
4758                (unsigned long long) ext2fs_inode_i_blocks(fs, inode),
4759                (unsigned long long) pb.num_blocks);
4760 #endif
4761         size = EXT2_I_SIZE(inode);
4762         if (pb.is_dir) {
4763                 unsigned nblock = size >> EXT2_BLOCK_SIZE_BITS(fs->super);
4764                 if (inode->i_flags & EXT4_INLINE_DATA_FL) {
4765                         int flags;
4766                         size_t sz = 0;
4767                         errcode_t err;
4768
4769                         flags = ctx->fs->flags;
4770                         ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
4771                         err = ext2fs_inline_data_size(ctx->fs, pctx->ino,
4772                                                       &sz);
4773                         ctx->fs->flags = (flags &
4774                                           EXT2_FLAG_IGNORE_CSUM_ERRORS) |
4775                                          (ctx->fs->flags &
4776                                           ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
4777                         if (err || sz != size) {
4778                                 bad_size = 7;
4779                                 pctx->num = sz;
4780                         }
4781                 } else if (size & (fs->blocksize - 1))
4782                         bad_size = 5;
4783                 else if (nblock > (pb.last_block + 1))
4784                         bad_size = 1;
4785                 else if (nblock < (pb.last_block + 1)) {
4786                         if (((pb.last_block + 1) - nblock) >
4787                             fs->super->s_prealloc_dir_blocks)
4788                                 bad_size = 2;
4789                 }
4790         } else {
4791                 if ((pb.last_init_lblock >= 0) &&
4792                     /* Do not allow initialized allocated blocks past i_size*/
4793                     (size < (__u64)pb.last_init_lblock * fs->blocksize) &&
4794                     !(inode->i_flags & EXT4_VERITY_FL))
4795                         bad_size = 3;
4796                 else if (!(extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) &&
4797                          size > ext2_max_sizes[fs->super->s_log_block_size])
4798                         /* too big for a direct/indirect-mapped file */
4799                         bad_size = 4;
4800                 else if ((extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) &&
4801                          size >
4802                          ((1ULL << (32 + EXT2_BLOCK_SIZE_BITS(fs->super))) - 1))
4803                         /* too big for an extent-based file - 32bit ee_block */
4804                         bad_size = 6;
4805         }
4806         /* i_size for symlinks is checked elsewhere */
4807         if (bad_size && !LINUX_S_ISLNK(inode->i_mode)) {
4808                 /* Did inline_data set pctx->num earlier? */
4809                 if (bad_size != 7)
4810                         pctx->num = (pb.last_block + 1) * fs->blocksize;
4811                 pctx->group = bad_size;
4812                 if (fix_problem(ctx, PR_1_BAD_I_SIZE, pctx)) {
4813                         ext2fs_inode_size_set(fs, inode, pctx->num);
4814                         if (EXT2_I_SIZE(inode) == 0 &&
4815                             (inode->i_flags & EXT4_INLINE_DATA_FL)) {
4816                                 memset(inode->i_block, 0,
4817                                        sizeof(inode->i_block));
4818                                 inode->i_flags &= ~EXT4_INLINE_DATA_FL;
4819                         }
4820                         dirty_inode++;
4821                 }
4822                 pctx->num = 0;
4823         }
4824         if (LINUX_S_ISREG(inode->i_mode) &&
4825             ext2fs_needs_large_file_feature(EXT2_I_SIZE(inode)))
4826                 ctx->large_files++;
4827         if ((fs->super->s_creator_os != EXT2_OS_HURD) &&
4828             ((pb.num_blocks != ext2fs_inode_i_blocks(fs, inode)) ||
4829              (ext2fs_has_feature_huge_file(fs->super) &&
4830               (inode->i_flags & EXT4_HUGE_FILE_FL) &&
4831               (inode->osd2.linux2.l_i_blocks_hi != 0)))) {
4832                 pctx->num = pb.num_blocks;
4833                 if (fix_problem(ctx, PR_1_BAD_I_BLOCKS, pctx)) {
4834                         inode->i_blocks = pb.num_blocks;
4835                         inode->osd2.linux2.l_i_blocks_hi = pb.num_blocks >> 32;
4836                         dirty_inode++;
4837                 }
4838                 pctx->num = 0;
4839         }
4840
4841         /*
4842          * The kernel gets mad if we ask it to allocate bigalloc clusters to
4843          * a block mapped file, so rebuild it as an extent file.  We can skip
4844          * symlinks because they're never rewritten.
4845          */
4846         if (ext2fs_has_feature_bigalloc(fs->super) &&
4847             (LINUX_S_ISREG(inode->i_mode) || LINUX_S_ISDIR(inode->i_mode)) &&
4848             ext2fs_inode_data_blocks2(fs, inode) > 0 &&
4849             (ino == EXT2_ROOT_INO || ino >= EXT2_FIRST_INO(fs->super)) &&
4850             !(inode->i_flags & (EXT4_EXTENTS_FL | EXT4_INLINE_DATA_FL)) &&
4851             fix_problem(ctx, PR_1_NO_BIGALLOC_BLOCKMAP_FILES, pctx)) {
4852                 pctx->errcode = e2fsck_rebuild_extents_later(ctx, ino);
4853                 if (pctx->errcode)
4854                         goto out;
4855         }
4856
4857         if (ctx->dirs_to_hash && pb.is_dir &&
4858             !(ctx->lost_and_found && ctx->lost_and_found == ino) &&
4859             !(inode->i_flags & EXT2_INDEX_FL) &&
4860             ((inode->i_size / fs->blocksize) >= 3))
4861                 e2fsck_rehash_dir_later(ctx, ino);
4862
4863 out:
4864         if (dirty_inode)
4865                 e2fsck_write_inode(ctx, ino, inode, "check_blocks");
4866 }
4867
4868 #if 0
4869 /*
4870  * Helper function called by process block when an illegal block is
4871  * found.  It returns a description about why the block is illegal
4872  */
4873 static char *describe_illegal_block(ext2_filsys fs, blk64_t block)
4874 {
4875         blk64_t super;
4876         int     i;
4877         static char     problem[80];
4878
4879         super = fs->super->s_first_data_block;
4880         strcpy(problem, "PROGRAMMING ERROR: Unknown reason for illegal block");
4881         if (block < super) {
4882                 sprintf(problem, "< FIRSTBLOCK (%u)", super);
4883                 return(problem);
4884         } else if (block >= ext2fs_blocks_count(fs->super)) {
4885                 sprintf(problem, "> BLOCKS (%u)", ext2fs_blocks_count(fs->super));
4886                 return(problem);
4887         }
4888         for (i = 0; i < fs->group_desc_count; i++) {
4889                 if (block == super) {
4890                         sprintf(problem, "is the superblock in group %d", i);
4891                         break;
4892                 }
4893                 if (block > super &&
4894                     block <= (super + fs->desc_blocks)) {
4895                         sprintf(problem, "is in the group descriptors "
4896                                 "of group %d", i);
4897                         break;
4898                 }
4899                 if (block == ext2fs_block_bitmap_loc(fs, i)) {
4900                         sprintf(problem, "is the block bitmap of group %d", i);
4901                         break;
4902                 }
4903                 if (block == ext2fs_inode_bitmap_loc(fs, i)) {
4904                         sprintf(problem, "is the inode bitmap of group %d", i);
4905                         break;
4906                 }
4907                 if (block >= ext2fs_inode_table_loc(fs, i) &&
4908                     (block < ext2fs_inode_table_loc(fs, i)
4909                      + fs->inode_blocks_per_group)) {
4910                         sprintf(problem, "is in the inode table of group %d",
4911                                 i);
4912                         break;
4913                 }
4914                 super += fs->super->s_blocks_per_group;
4915         }
4916         return(problem);
4917 }
4918 #endif
4919
4920 /*
4921  * This is a helper function for check_blocks().
4922  */
4923 static int process_block(ext2_filsys fs,
4924                   blk64_t       *block_nr,
4925                   e2_blkcnt_t blockcnt,
4926                   blk64_t ref_block EXT2FS_ATTR((unused)),
4927                   int ref_offset EXT2FS_ATTR((unused)),
4928                   void *priv_data)
4929 {
4930         struct process_block_struct *p;
4931         struct problem_context *pctx;
4932         blk64_t blk = *block_nr;
4933         int     ret_code = 0;
4934         problem_t       problem = 0;
4935         e2fsck_t        ctx;
4936
4937         p = (struct process_block_struct *) priv_data;
4938         pctx = p->pctx;
4939         ctx = p->ctx;
4940
4941         /*
4942          * For a directory, add logical block zero for processing even if it's
4943          * not mapped or we'll be perennially stuck with broken "." and ".."
4944          * entries.
4945          */
4946         if (p->is_dir && blockcnt == 0 && blk == 0) {
4947                 pctx->errcode = ext2fs_add_dir_block2(fs->dblist, p->ino, 0, 0);
4948                 if (pctx->errcode) {
4949                         pctx->blk = blk;
4950                         pctx->num = blockcnt;
4951                         goto failed_add_dir_block;
4952                 }
4953                 p->last_db_block++;
4954         }
4955
4956         if (blk == 0)
4957                 return 0;
4958
4959 #if 0
4960         printf("Process_block, inode %lu, block %u, #%d\n", p->ino, blk,
4961                blockcnt);
4962 #endif
4963
4964         /*
4965          * Simplistic fragmentation check.  We merely require that the
4966          * file be contiguous.  (Which can never be true for really
4967          * big files that are greater than a block group.)
4968          */
4969         if (p->previous_block && p->ino != EXT2_RESIZE_INO) {
4970                 if (p->previous_block+1 != blk) {
4971                         if (ctx->options & E2F_OPT_FRAGCHECK) {
4972                                 char type = '?';
4973
4974                                 if (p->is_dir)
4975                                         type = 'd';
4976                                 else if (p->is_reg)
4977                                         type = 'f';
4978
4979                                 printf(_("%6lu(%c): expecting %6lu "
4980                                          "got phys %6lu (blkcnt %lld)\n"),
4981                                        (unsigned long) pctx->ino, type,
4982                                        (unsigned long) p->previous_block+1,
4983                                        (unsigned long) blk,
4984                                        (long long) blockcnt);
4985                         }
4986                         p->fragmented = 1;
4987                 }
4988         }
4989
4990         if (p->is_dir && !ext2fs_has_feature_largedir(fs->super) &&
4991             !pctx->inode->i_size_high &&
4992             blockcnt > (1 << (21 - fs->super->s_log_block_size)))
4993                 problem = PR_1_TOOBIG_DIR;
4994         if (p->is_dir && p->num_blocks + 1 >= p->max_blocks)
4995                 problem = PR_1_TOOBIG_DIR;
4996         if (p->is_reg && p->num_blocks + 1 >= p->max_blocks)
4997                 problem = PR_1_TOOBIG_REG;
4998         if (!p->is_dir && !p->is_reg && blockcnt > 0)
4999                 problem = PR_1_TOOBIG_SYMLINK;
5000
5001         if (blk < fs->super->s_first_data_block ||
5002             blk >= ext2fs_blocks_count(fs->super))
5003                 problem = PR_1_ILLEGAL_BLOCK_NUM;
5004
5005         /*
5006          * If this IND/DIND/TIND block is squatting atop some critical metadata
5007          * (group descriptors, superblock, bitmap, inode table), any write to
5008          * "fix" mapping problems will destroy the metadata.  We'll let pass 1b
5009          * fix that and restart fsck.
5010          */
5011         if (blockcnt < 0 &&
5012             p->ino != EXT2_RESIZE_INO &&
5013             blk < ctx->fs->super->s_blocks_count &&
5014             ext2fs_test_block_bitmap2(ctx->block_metadata_map, blk)) {
5015                 pctx->blk = blk;
5016                 fix_problem(ctx, PR_1_CRITICAL_METADATA_COLLISION, pctx);
5017                 if ((ctx->options & E2F_OPT_NO) == 0)
5018                         ctx->flags |= E2F_FLAG_RESTART_LATER;
5019         }
5020
5021         if (problem) {
5022                 p->num_illegal_blocks++;
5023                 /*
5024                  * A bit of subterfuge here -- we're trying to fix a block
5025                  * mapping, but the IND/DIND/TIND block could have collided
5026                  * with some critical metadata.  So, fix the in-core mapping so
5027                  * iterate won't go insane, but return 0 instead of
5028                  * BLOCK_CHANGED so that it won't write the remapping out to
5029                  * our multiply linked block.
5030                  *
5031                  * Even if we previously determined that an *IND block
5032                  * conflicts with critical metadata, we must still try to
5033                  * iterate the *IND block as if it is an *IND block to find and
5034                  * mark the blocks it points to.  Better to be overly cautious
5035                  * with the used_blocks map so that we don't move the *IND
5036                  * block to a block that's really in use!
5037                  */
5038                 if (p->ino != EXT2_RESIZE_INO &&
5039                     ref_block != 0 &&
5040                     ext2fs_test_block_bitmap2(ctx->block_metadata_map,
5041                                               ref_block)) {
5042                         *block_nr = 0;
5043                         return 0;
5044                 }
5045                 if (!p->suppress && (p->num_illegal_blocks % 12) == 0) {
5046                         if (fix_problem(ctx, PR_1_TOO_MANY_BAD_BLOCKS, pctx)) {
5047                                 p->clear = 1;
5048                                 return BLOCK_ABORT;
5049                         }
5050                         if (fix_problem(ctx, PR_1_SUPPRESS_MESSAGES, pctx)) {
5051                                 p->suppress = 1;
5052                                 set_latch_flags(PR_LATCH_BLOCK,
5053                                                 PRL_SUPPRESS, 0);
5054                         }
5055                 }
5056                 pctx->blk = blk;
5057                 pctx->blkcount = blockcnt;
5058                 if (fix_problem(ctx, problem, pctx)) {
5059                         blk = *block_nr = 0;
5060                         ret_code = BLOCK_CHANGED;
5061                         p->inode_modified = 1;
5062                         /*
5063                          * If the directory block is too big and is beyond the
5064                          * end of the FS, don't bother trying to add it for
5065                          * processing -- the kernel would never have created a
5066                          * directory this large, and we risk an ENOMEM abort.
5067                          * In any case, the toobig handler for extent-based
5068                          * directories also doesn't feed toobig blocks to
5069                          * pass 2.
5070                          */
5071                         if (problem == PR_1_TOOBIG_DIR)
5072                                 return ret_code;
5073                         goto mark_dir;
5074                 } else
5075                         return 0;
5076         }
5077
5078         if (p->ino == EXT2_RESIZE_INO) {
5079                 /*
5080                  * The resize inode has already be sanity checked
5081                  * during pass #0 (the superblock checks).  All we
5082                  * have to do is mark the double indirect block as
5083                  * being in use; all of the other blocks are handled
5084                  * by mark_table_blocks()).
5085                  */
5086                 if (blockcnt == BLOCK_COUNT_DIND)
5087                         mark_block_used(ctx, blk);
5088                 p->num_blocks++;
5089         } else if (!(ctx->fs->cluster_ratio_bits &&
5090                      p->previous_block &&
5091                      (EXT2FS_B2C(ctx->fs, blk) ==
5092                       EXT2FS_B2C(ctx->fs, p->previous_block)) &&
5093                      (blk & EXT2FS_CLUSTER_MASK(ctx->fs)) ==
5094                      ((unsigned) blockcnt & EXT2FS_CLUSTER_MASK(ctx->fs)))) {
5095                 mark_block_used(ctx, blk);
5096                 p->num_blocks++;
5097         } else if (has_unaligned_cluster_map(ctx, p->previous_block,
5098                                              p->last_block, blk, blockcnt)) {
5099                 pctx->blk = blockcnt;
5100                 pctx->blk2 = blk;
5101                 fix_problem(ctx, PR_1_MISALIGNED_CLUSTER, pctx);
5102                 mark_block_used(ctx, blk);
5103                 mark_block_used(ctx, blk);
5104         }
5105         if (blockcnt >= 0)
5106                 p->last_block = blockcnt;
5107         p->previous_block = blk;
5108 mark_dir:
5109         if (p->is_dir && (blockcnt >= 0)) {
5110                 while (++p->last_db_block < blockcnt) {
5111                         pctx->errcode = ext2fs_add_dir_block2(fs->dblist,
5112                                                               p->ino, 0,
5113                                                               p->last_db_block);
5114                         if (pctx->errcode) {
5115                                 pctx->blk = 0;
5116                                 pctx->num = p->last_db_block;
5117                                 goto failed_add_dir_block;
5118                         }
5119                 }
5120                 pctx->errcode = ext2fs_add_dir_block2(fs->dblist, p->ino,
5121                                                       blk, blockcnt);
5122                 if (pctx->errcode) {
5123                         pctx->blk = blk;
5124                         pctx->num = blockcnt;
5125                 failed_add_dir_block:
5126                         fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
5127                         /* Should never get here */
5128                         ctx->flags |= E2F_FLAG_ABORT;
5129                         return BLOCK_ABORT;
5130                 }
5131         }
5132         return ret_code;
5133 }
5134
5135 static int process_bad_block(ext2_filsys fs,
5136                       blk64_t *block_nr,
5137                       e2_blkcnt_t blockcnt,
5138                       blk64_t ref_block EXT2FS_ATTR((unused)),
5139                       int ref_offset EXT2FS_ATTR((unused)),
5140                       void *priv_data)
5141 {
5142         struct process_block_struct *p;
5143         blk64_t         blk = *block_nr;
5144         blk64_t         first_block;
5145         dgrp_t          i;
5146         struct problem_context *pctx;
5147         e2fsck_t        ctx;
5148
5149         if (!blk)
5150                 return 0;
5151
5152         p = (struct process_block_struct *) priv_data;
5153         ctx = p->ctx;
5154         pctx = p->pctx;
5155
5156         pctx->ino = EXT2_BAD_INO;
5157         pctx->blk = blk;
5158         pctx->blkcount = blockcnt;
5159
5160         if ((blk < fs->super->s_first_data_block) ||
5161             (blk >= ext2fs_blocks_count(fs->super))) {
5162                 if (fix_problem(ctx, PR_1_BB_ILLEGAL_BLOCK_NUM, pctx)) {
5163                         *block_nr = 0;
5164                         return BLOCK_CHANGED;
5165                 } else
5166                         return 0;
5167         }
5168
5169         if (blockcnt < 0) {
5170                 if (ext2fs_test_block_bitmap2(p->fs_meta_blocks, blk)) {
5171                         p->bbcheck = 1;
5172                         if (fix_problem(ctx, PR_1_BB_FS_BLOCK, pctx)) {
5173                                 *block_nr = 0;
5174                                 return BLOCK_CHANGED;
5175                         }
5176                 } else if (is_blocks_used(ctx, blk, 1)) {
5177                         p->bbcheck = 1;
5178                         if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK,
5179                                         pctx)) {
5180                                 *block_nr = 0;
5181                                 return BLOCK_CHANGED;
5182                         }
5183                         if (e2fsck_should_abort(ctx))
5184                                 return BLOCK_ABORT;
5185                 } else {
5186                         mark_block_used(ctx, blk);
5187                 }
5188                 return 0;
5189         }
5190 #if 0
5191         printf ("DEBUG: Marking %u as bad.\n", blk);
5192 #endif
5193         ctx->fs_badblocks_count++;
5194         /*
5195          * If the block is not used, then mark it as used and return.
5196          * If it is already marked as found, this must mean that
5197          * there's an overlap between the filesystem table blocks
5198          * (bitmaps and inode table) and the bad block list.
5199          */
5200         if (!is_blocks_used(ctx, blk, 1)) {
5201                 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
5202                 return 0;
5203         }
5204         /*
5205          * Try to find the where the filesystem block was used...
5206          */
5207         first_block = fs->super->s_first_data_block;
5208
5209         for (i = 0; i < fs->group_desc_count; i++ ) {
5210                 pctx->group = i;
5211                 pctx->blk = blk;
5212                 if (!ext2fs_bg_has_super(fs, i))
5213                         goto skip_super;
5214                 if (blk == first_block) {
5215                         if (i == 0) {
5216                                 if (fix_problem(ctx,
5217                                                 PR_1_BAD_PRIMARY_SUPERBLOCK,
5218                                                 pctx)) {
5219                                         *block_nr = 0;
5220                                         return BLOCK_CHANGED;
5221                                 }
5222                                 return 0;
5223                         }
5224                         fix_problem(ctx, PR_1_BAD_SUPERBLOCK, pctx);
5225                         return 0;
5226                 }
5227                 if ((blk > first_block) &&
5228                     (blk <= first_block + fs->desc_blocks)) {
5229                         if (i == 0) {
5230                                 pctx->blk = *block_nr;
5231                                 if (fix_problem(ctx,
5232                         PR_1_BAD_PRIMARY_GROUP_DESCRIPTOR, pctx)) {
5233                                         *block_nr = 0;
5234                                         return BLOCK_CHANGED;
5235                                 }
5236                                 return 0;
5237                         }
5238                         fix_problem(ctx, PR_1_BAD_GROUP_DESCRIPTORS, pctx);
5239                         return 0;
5240                 }
5241         skip_super:
5242                 if (blk == ext2fs_block_bitmap_loc(fs, i)) {
5243                         if (fix_problem(ctx, PR_1_BB_BAD_BLOCK, pctx)) {
5244                                 ctx->invalid_block_bitmap_flag[i]++;
5245                                 ctx->invalid_bitmaps++;
5246                         }
5247                         return 0;
5248                 }
5249                 if (blk == ext2fs_inode_bitmap_loc(fs, i)) {
5250                         if (fix_problem(ctx, PR_1_IB_BAD_BLOCK, pctx)) {
5251                                 ctx->invalid_inode_bitmap_flag[i]++;
5252                                 ctx->invalid_bitmaps++;
5253                         }
5254                         return 0;
5255                 }
5256                 if ((blk >= ext2fs_inode_table_loc(fs, i)) &&
5257                     (blk < (ext2fs_inode_table_loc(fs, i) +
5258                             fs->inode_blocks_per_group))) {
5259                         /*
5260                          * If there are bad blocks in the inode table,
5261                          * the inode scan code will try to do
5262                          * something reasonable automatically.
5263                          */
5264                         return 0;
5265                 }
5266                 first_block += fs->super->s_blocks_per_group;
5267         }
5268         /*
5269          * If we've gotten to this point, then the only
5270          * possibility is that the bad block inode meta data
5271          * is using a bad block.
5272          */
5273         if ((blk == p->inode->i_block[EXT2_IND_BLOCK]) ||
5274             (blk == p->inode->i_block[EXT2_DIND_BLOCK]) ||
5275             (blk == p->inode->i_block[EXT2_TIND_BLOCK])) {
5276                 p->bbcheck = 1;
5277                 if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK, pctx)) {
5278                         *block_nr = 0;
5279                         return BLOCK_CHANGED;
5280                 }
5281                 if (e2fsck_should_abort(ctx))
5282                         return BLOCK_ABORT;
5283                 return 0;
5284         }
5285
5286         pctx->group = -1;
5287
5288         /* Warn user that the block wasn't claimed */
5289         fix_problem(ctx, PR_1_PROGERR_CLAIMED_BLOCK, pctx);
5290
5291         return 0;
5292 }
5293
5294 static void new_table_block(e2fsck_t ctx, blk64_t first_block, dgrp_t group,
5295                             const char *name, int num, blk64_t *new_block)
5296 {
5297         ext2_filsys fs = ctx->fs;
5298         dgrp_t          last_grp;
5299         blk64_t         old_block = *new_block;
5300         blk64_t         last_block;
5301         dgrp_t          flexbg;
5302         unsigned        flexbg_size;
5303         int             i, is_flexbg;
5304         char            *buf;
5305         struct problem_context  pctx;
5306
5307         clear_problem_context(&pctx);
5308
5309         pctx.group = group;
5310         pctx.blk = old_block;
5311         pctx.str = name;
5312
5313         /*
5314          * For flex_bg filesystems, first try to allocate the metadata
5315          * within the flex_bg, and if that fails then try finding the
5316          * space anywhere in the filesystem.
5317          */
5318         is_flexbg = ext2fs_has_feature_flex_bg(fs->super);
5319         if (is_flexbg) {
5320                 flexbg_size = 1 << fs->super->s_log_groups_per_flex;
5321                 flexbg = group / flexbg_size;
5322                 first_block = ext2fs_group_first_block2(fs,
5323                                                         flexbg_size * flexbg);
5324                 last_grp = group | (flexbg_size - 1);
5325                 if (last_grp >= fs->group_desc_count)
5326                         last_grp = fs->group_desc_count - 1;
5327                 last_block = ext2fs_group_last_block2(fs, last_grp);
5328         } else
5329                 last_block = ext2fs_group_last_block2(fs, group);
5330         pctx.errcode = ext2fs_get_free_blocks2(fs, first_block, last_block,
5331                                                num, ctx->block_found_map,
5332                                                new_block);
5333         if (is_flexbg && (pctx.errcode == EXT2_ET_BLOCK_ALLOC_FAIL))
5334                 pctx.errcode = ext2fs_get_free_blocks2(fs,
5335                                 fs->super->s_first_data_block,
5336                                 ext2fs_blocks_count(fs->super),
5337                                 num, ctx->block_found_map, new_block);
5338         if (pctx.errcode) {
5339                 pctx.num = num;
5340                 fix_problem(ctx, PR_1_RELOC_BLOCK_ALLOCATE, &pctx);
5341                 ext2fs_unmark_valid(fs);
5342                 ctx->flags |= E2F_FLAG_ABORT;
5343                 return;
5344         }
5345         pctx.errcode = ext2fs_get_mem(fs->blocksize, &buf);
5346         if (pctx.errcode) {
5347                 fix_problem(ctx, PR_1_RELOC_MEMORY_ALLOCATE, &pctx);
5348                 ext2fs_unmark_valid(fs);
5349                 ctx->flags |= E2F_FLAG_ABORT;
5350                 return;
5351         }
5352         ext2fs_mark_super_dirty(fs);
5353         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
5354         pctx.blk2 = *new_block;
5355         fix_problem(ctx, (old_block ? PR_1_RELOC_FROM_TO :
5356                           PR_1_RELOC_TO), &pctx);
5357         pctx.blk2 = 0;
5358         for (i = 0; i < num; i++) {
5359                 pctx.blk = i;
5360                 ext2fs_mark_block_bitmap2(ctx->block_found_map, (*new_block)+i);
5361                 if (old_block) {
5362                         pctx.errcode = io_channel_read_blk64(fs->io,
5363                                    old_block + i, 1, buf);
5364                         if (pctx.errcode)
5365                                 fix_problem(ctx, PR_1_RELOC_READ_ERR, &pctx);
5366                         pctx.blk = (*new_block) + i;
5367                         pctx.errcode = io_channel_write_blk64(fs->io, pctx.blk,
5368                                                               1, buf);
5369                 } else {
5370                         pctx.blk = (*new_block) + i;
5371                         pctx.errcode = ext2fs_zero_blocks2(fs, pctx.blk, 1,
5372                                                            NULL, NULL);
5373                 }
5374
5375                 if (pctx.errcode)
5376                         fix_problem(ctx, PR_1_RELOC_WRITE_ERR, &pctx);
5377         }
5378         ext2fs_free_mem(&buf);
5379 }
5380
5381 /*
5382  * This routine gets called at the end of pass 1 if bad blocks are
5383  * detected in the superblock, group descriptors, inode_bitmaps, or
5384  * block bitmaps.  At this point, all of the blocks have been mapped
5385  * out, so we can try to allocate new block(s) to replace the bad
5386  * blocks.
5387  */
5388 static void handle_fs_bad_blocks(e2fsck_t ctx)
5389 {
5390         ext2_filsys fs = ctx->fs;
5391         dgrp_t          i;
5392         blk64_t         first_block;
5393         blk64_t         new_blk;
5394
5395         for (i = 0; i < fs->group_desc_count; i++) {
5396                 first_block = ext2fs_group_first_block2(fs, i);
5397
5398                 if (ctx->invalid_block_bitmap_flag[i]) {
5399                         new_blk = ext2fs_block_bitmap_loc(fs, i);
5400                         new_table_block(ctx, first_block, i, _("block bitmap"),
5401                                         1, &new_blk);
5402                         ext2fs_block_bitmap_loc_set(fs, i, new_blk);
5403                 }
5404                 if (ctx->invalid_inode_bitmap_flag[i]) {
5405                         new_blk = ext2fs_inode_bitmap_loc(fs, i);
5406                         new_table_block(ctx, first_block, i, _("inode bitmap"),
5407                                         1, &new_blk);
5408                         ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
5409                 }
5410                 if (ctx->invalid_inode_table_flag[i]) {
5411                         new_blk = ext2fs_inode_table_loc(fs, i);
5412                         new_table_block(ctx, first_block, i, _("inode table"),
5413                                         fs->inode_blocks_per_group,
5414                                         &new_blk);
5415                         ext2fs_inode_table_loc_set(fs, i, new_blk);
5416                         ctx->flags |= E2F_FLAG_RESTART;
5417                 }
5418         }
5419         ctx->invalid_bitmaps = 0;
5420 }
5421
5422 /*
5423  * This routine marks all blocks which are used by the superblock,
5424  * group descriptors, inode bitmaps, and block bitmaps.
5425  */
5426 static void mark_table_blocks(e2fsck_t ctx)
5427 {
5428         ext2_filsys fs = ctx->fs;
5429         blk64_t b;
5430         dgrp_t  i;
5431         unsigned int    j;
5432         struct problem_context pctx;
5433
5434         clear_problem_context(&pctx);
5435
5436         for (i = 0; i < fs->group_desc_count; i++) {
5437                 pctx.group = i;
5438
5439                 ext2fs_reserve_super_and_bgd(fs, i, ctx->block_found_map);
5440                 ext2fs_reserve_super_and_bgd(fs, i, ctx->block_metadata_map);
5441
5442                 /*
5443                  * Mark the blocks used for the inode table
5444                  */
5445                 if (ext2fs_inode_table_loc(fs, i)) {
5446                         for (j = 0, b = ext2fs_inode_table_loc(fs, i);
5447                              j < fs->inode_blocks_per_group;
5448                              j++, b++) {
5449                                 if (ext2fs_test_block_bitmap2(ctx->block_found_map,
5450                                                              b)) {
5451                                         pctx.blk = b;
5452                                         if (!ctx->invalid_inode_table_flag[i] &&
5453                                             fix_problem(ctx,
5454                                                 PR_1_ITABLE_CONFLICT, &pctx)) {
5455                                                 ctx->invalid_inode_table_flag[i]++;
5456                                                 ctx->invalid_bitmaps++;
5457                                         }
5458                                 } else {
5459                                     ext2fs_mark_block_bitmap2(
5460                                                 ctx->block_found_map, b);
5461                                     ext2fs_mark_block_bitmap2(
5462                                                 ctx->block_metadata_map, b);
5463                                 }
5464                         }
5465                 }
5466
5467                 /*
5468                  * Mark block used for the block bitmap
5469                  */
5470                 if (ext2fs_block_bitmap_loc(fs, i)) {
5471                         if (ext2fs_test_block_bitmap2(ctx->block_found_map,
5472                                      ext2fs_block_bitmap_loc(fs, i))) {
5473                                 pctx.blk = ext2fs_block_bitmap_loc(fs, i);
5474                                 if (fix_problem(ctx, PR_1_BB_CONFLICT, &pctx)) {
5475                                         ctx->invalid_block_bitmap_flag[i]++;
5476                                         ctx->invalid_bitmaps++;
5477                                 }
5478                         } else {
5479                             ext2fs_mark_block_bitmap2(ctx->block_found_map,
5480                                      ext2fs_block_bitmap_loc(fs, i));
5481                             ext2fs_mark_block_bitmap2(ctx->block_metadata_map,
5482                                      ext2fs_block_bitmap_loc(fs, i));
5483                         }
5484                 }
5485                 /*
5486                  * Mark block used for the inode bitmap
5487                  */
5488                 if (ext2fs_inode_bitmap_loc(fs, i)) {
5489                         if (ext2fs_test_block_bitmap2(ctx->block_found_map,
5490                                      ext2fs_inode_bitmap_loc(fs, i))) {
5491                                 pctx.blk = ext2fs_inode_bitmap_loc(fs, i);
5492                                 if (fix_problem(ctx, PR_1_IB_CONFLICT, &pctx)) {
5493                                         ctx->invalid_inode_bitmap_flag[i]++;
5494                                         ctx->invalid_bitmaps++;
5495                                 }
5496                         } else {
5497                             ext2fs_mark_block_bitmap2(ctx->block_metadata_map,
5498                                      ext2fs_inode_bitmap_loc(fs, i));
5499                             ext2fs_mark_block_bitmap2(ctx->block_found_map,
5500                                      ext2fs_inode_bitmap_loc(fs, i));
5501                         }
5502                 }
5503         }
5504 }
5505
5506 /*
5507  * These subroutines short circuits ext2fs_get_blocks and
5508  * ext2fs_check_directory; we use them since we already have the inode
5509  * structure, so there's no point in letting the ext2fs library read
5510  * the inode again.
5511  */
5512 static errcode_t pass1_get_blocks(ext2_filsys fs, ext2_ino_t ino,
5513                                   blk_t *blocks)
5514 {
5515         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
5516         int     i;
5517
5518         if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
5519                 return EXT2_ET_CALLBACK_NOTHANDLED;
5520
5521         for (i=0; i < EXT2_N_BLOCKS; i++)
5522                 blocks[i] = ctx->stashed_inode->i_block[i];
5523         return 0;
5524 }
5525
5526 static errcode_t pass1_read_inode(ext2_filsys fs, ext2_ino_t ino,
5527                                   struct ext2_inode *inode)
5528 {
5529         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
5530
5531         if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
5532                 return EXT2_ET_CALLBACK_NOTHANDLED;
5533         *inode = *ctx->stashed_inode;
5534         return 0;
5535 }
5536
5537 static errcode_t pass1_write_inode(ext2_filsys fs, ext2_ino_t ino,
5538                             struct ext2_inode *inode)
5539 {
5540         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
5541
5542         if ((ino == ctx->stashed_ino) && ctx->stashed_inode &&
5543                 (inode != ctx->stashed_inode))
5544                 *ctx->stashed_inode = *inode;
5545         return EXT2_ET_CALLBACK_NOTHANDLED;
5546 }
5547
5548 static errcode_t pass1_check_directory(ext2_filsys fs, ext2_ino_t ino)
5549 {
5550         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
5551
5552         if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
5553                 return EXT2_ET_CALLBACK_NOTHANDLED;
5554
5555         if (!LINUX_S_ISDIR(ctx->stashed_inode->i_mode))
5556                 return EXT2_ET_NO_DIRECTORY;
5557         return 0;
5558 }
5559
5560 static errcode_t e2fsck_get_alloc_block(ext2_filsys fs, blk64_t goal,
5561                                         blk64_t *ret)
5562 {
5563         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
5564         errcode_t       retval;
5565         blk64_t         new_block;
5566
5567         if (ctx->block_found_map) {
5568                 retval = ext2fs_new_block2(fs, goal, ctx->block_found_map,
5569                                            &new_block);
5570                 if (retval)
5571                         return retval;
5572                 if (fs->block_map) {
5573                         ext2fs_mark_block_bitmap2(fs->block_map, new_block);
5574                         ext2fs_mark_bb_dirty(fs);
5575                 }
5576         } else {
5577                 if (!fs->block_map) {
5578                         retval = ext2fs_read_block_bitmap(fs);
5579                         if (retval)
5580                                 return retval;
5581                 }
5582
5583                 retval = ext2fs_new_block2(fs, goal, fs->block_map, &new_block);
5584                 if (retval)
5585                         return retval;
5586         }
5587
5588         *ret = new_block;
5589         return (0);
5590 }
5591
5592 static errcode_t e2fsck_new_range(ext2_filsys fs, int flags, blk64_t goal,
5593                                   blk64_t len, blk64_t *pblk, blk64_t *plen)
5594 {
5595         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
5596         errcode_t       retval;
5597
5598         if (ctx->block_found_map)
5599                 return ext2fs_new_range(fs, flags, goal, len,
5600                                         ctx->block_found_map, pblk, plen);
5601
5602         if (!fs->block_map) {
5603                 retval = ext2fs_read_block_bitmap(fs);
5604                 if (retval)
5605                         return retval;
5606         }
5607
5608         return ext2fs_new_range(fs, flags, goal, len, fs->block_map,
5609                                 pblk, plen);
5610 }
5611
5612 static void e2fsck_block_alloc_stats(ext2_filsys fs, blk64_t blk, int inuse)
5613 {
5614         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
5615
5616         /* Never free a critical metadata block */
5617         if (ctx->block_found_map &&
5618             ctx->block_metadata_map &&
5619             inuse < 0 &&
5620             ext2fs_test_block_bitmap2(ctx->block_metadata_map, blk))
5621                 return;
5622
5623         if (ctx->block_found_map) {
5624                 if (inuse > 0)
5625                         ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
5626                 else
5627                         ext2fs_unmark_block_bitmap2(ctx->block_found_map, blk);
5628         }
5629 }
5630
5631 static void e2fsck_block_alloc_stats_range(ext2_filsys fs, blk64_t blk,
5632                                            blk_t num, int inuse)
5633 {
5634         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
5635
5636         /* Never free a critical metadata block */
5637         if (ctx->block_found_map &&
5638             ctx->block_metadata_map &&
5639             inuse < 0 &&
5640             ext2fs_test_block_bitmap_range2(ctx->block_metadata_map, blk, num))
5641                 return;
5642
5643         if (ctx->block_found_map) {
5644                 if (inuse > 0)
5645                         ext2fs_mark_block_bitmap_range2(ctx->block_found_map,
5646                                                         blk, num);
5647                 else
5648                         ext2fs_unmark_block_bitmap_range2(ctx->block_found_map,
5649                                                         blk, num);
5650         }
5651 }
5652
5653 void e2fsck_use_inode_shortcuts(e2fsck_t ctx, int use_shortcuts)
5654 {
5655         ext2_filsys fs = ctx->fs;
5656
5657         if (use_shortcuts) {
5658                 fs->get_blocks = pass1_get_blocks;
5659                 fs->check_directory = pass1_check_directory;
5660                 fs->read_inode = pass1_read_inode;
5661                 fs->write_inode = pass1_write_inode;
5662                 ctx->stashed_ino = 0;
5663         } else {
5664                 fs->get_blocks = 0;
5665                 fs->check_directory = 0;
5666                 fs->read_inode = 0;
5667                 fs->write_inode = 0;
5668         }
5669 }
5670
5671 void e2fsck_intercept_block_allocations(e2fsck_t ctx)
5672 {
5673         ext2fs_set_alloc_block_callback(ctx->fs, e2fsck_get_alloc_block, 0);
5674         ext2fs_set_block_alloc_stats_callback(ctx->fs,
5675                                                 e2fsck_block_alloc_stats, 0);
5676         ext2fs_set_new_range_callback(ctx->fs, e2fsck_new_range, NULL);
5677         ext2fs_set_block_alloc_stats_range_callback(ctx->fs,
5678                                         e2fsck_block_alloc_stats_range, NULL);
5679 }