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                         e2fsck_pass1_check_unlock(ctx); \
 993                         return; \
 994                 } \
 995         } while (0)
 996
 997 static int could_be_block_map(ext2_filsys fs, struct ext2_inode *inode)
 998 {
 999         __u32 x;
1000         int i;
1001
1002         for (i = 0; i < EXT2_N_BLOCKS; i++) {
1003                 x = inode->i_block[i];
1004 #ifdef WORDS_BIGENDIAN
1005                 x = ext2fs_swab32(x);
1006 #endif
1007                 if (x >= ext2fs_blocks_count(fs->super))
1008                         return 0;
1009         }
1010
1011         return 1;
1012 }
1013
1014 /*
1015  * Figure out what to do with an inode that has both extents and inline data
1016  * inode flags set.  Returns -1 if we decide to erase the inode, 0 otherwise.
1017  */
1018 static int fix_inline_data_extents_file(e2fsck_t ctx,
1019                                         ext2_ino_t ino,
1020                                         struct ext2_inode *inode,
1021                                         int inode_size,
1022                                         struct problem_context *pctx)
1023 {
1024         size_t max_inline_ea_size;
1025         ext2_filsys fs = ctx->fs;
1026         int dirty = 0;
1027
1028         /* Both feature flags not set?  Just run the regular checks */
1029         if (!ext2fs_has_feature_extents(fs->super) &&
1030             !ext2fs_has_feature_inline_data(fs->super))
1031                 return 0;
1032
1033         /* Clear both flags if it's a special file */
1034         if (LINUX_S_ISCHR(inode->i_mode) ||
1035             LINUX_S_ISBLK(inode->i_mode) ||
1036             LINUX_S_ISFIFO(inode->i_mode) ||
1037             LINUX_S_ISSOCK(inode->i_mode)) {
1038                 check_extents_inlinedata(ctx, pctx);
1039                 return 0;
1040         }
1041
1042         /* If it looks like an extent tree, try to clear inlinedata */
1043         if (ext2fs_extent_header_verify(inode->i_block,
1044                                  sizeof(inode->i_block)) == 0 &&
1045             fix_problem(ctx, PR_1_CLEAR_INLINE_DATA_FOR_EXTENT, pctx)) {
1046                 inode->i_flags &= ~EXT4_INLINE_DATA_FL;
1047                 dirty = 1;
1048                 goto out;
1049         }
1050
1051         /* If it looks short enough to be inline data, try to clear extents */
1052         if (inode_size > EXT2_GOOD_OLD_INODE_SIZE)
1053                 max_inline_ea_size = inode_size -
1054                                      (EXT2_GOOD_OLD_INODE_SIZE +
1055                                       ((struct ext2_inode_large *)inode)->i_extra_isize);
1056         else
1057                 max_inline_ea_size = 0;
1058         if (EXT2_I_SIZE(inode) <
1059             EXT4_MIN_INLINE_DATA_SIZE + max_inline_ea_size &&
1060             fix_problem(ctx, PR_1_CLEAR_EXTENT_FOR_INLINE_DATA, pctx)) {
1061                 inode->i_flags &= ~EXT4_EXTENTS_FL;
1062                 dirty = 1;
1063                 goto out;
1064         }
1065
1066         /*
1067          * Too big for inline data, but no evidence of extent tree -
1068          * maybe it's a block map file?  If the mappings all look valid?
1069          */
1070         if (could_be_block_map(fs, inode) &&
1071             fix_problem(ctx, PR_1_CLEAR_EXTENT_INLINE_DATA_FLAGS, pctx)) {
1072 #ifdef WORDS_BIGENDIAN
1073                 int i;
1074
1075                 for (i = 0; i < EXT2_N_BLOCKS; i++)
1076                         inode->i_block[i] = ext2fs_swab32(inode->i_block[i]);
1077 #endif
1078
1079                 inode->i_flags &= ~(EXT4_EXTENTS_FL | EXT4_INLINE_DATA_FL);
1080                 dirty = 1;
1081                 goto out;
1082         }
1083
1084         /* Oh well, just clear the busted inode. */
1085         if (fix_problem(ctx, PR_1_CLEAR_EXTENT_INLINE_DATA_INODE, pctx)) {
1086                 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1087                 return -1;
1088         }
1089
1090 out:
1091         if (dirty)
1092                 e2fsck_write_inode(ctx, ino, inode, "pass1");
1093
1094         return 0;
1095 }
1096
1097 static void pass1_readahead(e2fsck_t ctx, dgrp_t *group, ext2_ino_t *next_ino)
1098 {
1099         ext2_ino_t inodes_in_group = 0, inodes_per_block, inodes_per_buffer;
1100         dgrp_t start = *group, grp, grp_end = ctx->fs->group_desc_count;
1101         blk64_t blocks_to_read = 0;
1102         errcode_t err = EXT2_ET_INVALID_ARGUMENT;
1103
1104 #ifdef HAVE_PTHREAD
1105         if (ctx->fs->fs_num_threads > 1)
1106                 grp_end = ctx->thread_info.et_group_end;
1107 #endif
1108         if (ctx->readahead_kb == 0)
1109                 goto out;
1110
1111         /* Keep iterating groups until we have enough to readahead */
1112         inodes_per_block = EXT2_INODES_PER_BLOCK(ctx->fs->super);
1113         for (grp = start; grp < grp_end; grp++) {
1114                 if (ext2fs_bg_flags_test(ctx->fs, grp, EXT2_BG_INODE_UNINIT))
1115                         continue;
1116                 inodes_in_group = ctx->fs->super->s_inodes_per_group -
1117                                         ext2fs_bg_itable_unused(ctx->fs, grp);
1118                 blocks_to_read += (inodes_in_group + inodes_per_block - 1) /
1119                                         inodes_per_block;
1120                 if (blocks_to_read * ctx->fs->blocksize >
1121                     ctx->readahead_kb * 1024)
1122                         break;
1123         }
1124
1125         err = e2fsck_readahead(ctx->fs, E2FSCK_READA_ITABLE, start,
1126                                grp - start + 1);
1127         if (err == EAGAIN) {
1128                 ctx->readahead_kb /= 2;
1129                 err = 0;
1130         }
1131
1132 out:
1133         if (err) {
1134                 /* Error; disable itable readahead */
1135                 *group = ctx->fs->group_desc_count;
1136                 *next_ino = ctx->fs->super->s_inodes_count;
1137         } else {
1138                 /*
1139                  * Don't do more readahead until we've reached the first inode
1140                  * of the last inode scan buffer block for the last group.
1141                  */
1142                 *group = grp + 1;
1143                 inodes_per_buffer = (ctx->inode_buffer_blocks ?
1144                                      ctx->inode_buffer_blocks :
1145                                      EXT2_INODE_SCAN_DEFAULT_BUFFER_BLOCKS) *
1146                                     ctx->fs->blocksize /
1147                                     EXT2_INODE_SIZE(ctx->fs->super);
1148                 inodes_in_group--;
1149                 *next_ino = inodes_in_group -
1150                             (inodes_in_group % inodes_per_buffer) + 1 +
1151                             (grp * ctx->fs->super->s_inodes_per_group);
1152         }
1153 }
1154
1155 /*
1156  * Check if the passed ino is one of the used superblock quota inodes.
1157  *
1158  * Before the quota inodes were journaled, older superblock quota inodes
1159  * were just regular files in the filesystem and not reserved inodes.  This
1160  * checks if the passed ino is one of the s_*_quota_inum superblock fields,
1161  * which may not always be the same as the EXT4_*_QUOTA_INO fields.
1162  */
1163 static int quota_inum_is_super(struct ext2_super_block *sb, ext2_ino_t ino)
1164 {
1165         enum quota_type qtype;
1166
1167         for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1168                 if (*quota_sb_inump(sb, qtype) == ino)
1169                         return 1;
1170
1171         return 0;
1172 }
1173
1174 /*
1175  * Check if the passed ino is one of the reserved quota inodes.
1176  * This checks if the inode number is one of the reserved EXT4_*_QUOTA_INO
1177  * inodes.  These inodes may or may not be in use by the quota feature.
1178  */
1179 static int quota_inum_is_reserved(ext2_filsys fs, ext2_ino_t ino)
1180 {
1181         enum quota_type qtype;
1182
1183         for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1184                 if (quota_type2inum(qtype, fs->super) == ino)
1185                         return 1;
1186
1187         return 0;
1188 }
1189
1190 static int e2fsck_should_abort(e2fsck_t ctx)
1191 {
1192         e2fsck_t global_ctx;
1193
1194         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1195                 return 1;
1196
1197         if (ctx->global_ctx) {
1198                 global_ctx = ctx->global_ctx;
1199                 if (global_ctx->flags & E2F_FLAG_SIGNAL_MASK)
1200                         return 1;
1201         }
1202         return 0;
1203 }
1204
1205 static void init_ext2_max_sizes()
1206 {
1207         int     i;
1208         __u64   max_sizes;
1209
1210         /*
1211          * Init ext2_max_sizes which will be immutable and shared between
1212          * threads
1213          */
1214 #define EXT2_BPP(bits) (1ULL << ((bits) - 2))
1215
1216         for (i = EXT2_MIN_BLOCK_LOG_SIZE; i <= EXT2_MAX_BLOCK_LOG_SIZE; i++) {
1217                 max_sizes = EXT2_NDIR_BLOCKS + EXT2_BPP(i);
1218                 max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i);
1219                 max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i) * EXT2_BPP(i);
1220                 max_sizes = (max_sizes * (1UL << i));
1221                 ext2_max_sizes[i - EXT2_MIN_BLOCK_LOG_SIZE] = max_sizes;
1222         }
1223 #undef EXT2_BPP
1224 }
1225
1226 #ifdef HAVE_PTHREAD
1227 /* TODO: tdb needs to be handled properly for multiple threads*/
1228 static int multiple_threads_supported(e2fsck_t ctx)
1229 {
1230 #ifdef  CONFIG_TDB
1231         unsigned int            threshold;
1232         ext2_ino_t              num_dirs;
1233         errcode_t               retval;
1234         char                    *tdb_dir;
1235         int                     enable;
1236
1237         profile_get_string(ctx->profile, "scratch_files", "directory", 0, 0,
1238                            &tdb_dir);
1239         profile_get_uint(ctx->profile, "scratch_files",
1240                          "numdirs_threshold", 0, 0, &threshold);
1241         profile_get_boolean(ctx->profile, "scratch_files",
1242                             "icount", 0, 1, &enable);
1243
1244         retval = ext2fs_get_num_dirs(ctx->fs, &num_dirs);
1245         if (retval)
1246                 num_dirs = 1024;        /* Guess */
1247
1248         /* tdb is unsupported now */
1249         if (enable && tdb_dir && !access(tdb_dir, W_OK) &&
1250             (!threshold || num_dirs > threshold))
1251                 return 0;
1252 #endif
1253         return 1;
1254 }
1255
1256 /**
1257  * Even though we could specify number of threads,
1258  * but it might be more than the whole filesystem
1259  * block groups, correct it here.
1260  */
1261 static void e2fsck_pass1_set_thread_num(e2fsck_t ctx)
1262 {
1263         unsigned flexbg_size = 1;
1264         ext2_filsys fs = ctx->fs;
1265         int num_threads = ctx->pfs_num_threads;
1266         int max_threads;
1267
1268         if (num_threads < 1) {
1269                 num_threads = 1;
1270                 goto out;
1271         }
1272
1273         if (!multiple_threads_supported(ctx)) {
1274                 num_threads = 1;
1275                 fprintf(stderr, "Fall through single thread for pass1 "
1276                         "because tdb could not handle properly\n");
1277                 goto out;
1278         }
1279
1280         if (ext2fs_has_feature_flex_bg(fs->super))
1281                 flexbg_size = 1 << fs->super->s_log_groups_per_flex;
1282         max_threads = fs->group_desc_count / flexbg_size;
1283         if (max_threads == 0)
1284                 max_threads = 1;
1285         if (max_threads > E2FSCK_MAX_THREADS)
1286                 max_threads = E2FSCK_MAX_THREADS;
1287
1288         if (num_threads > max_threads) {
1289                 fprintf(stderr, "Use max possible thread num: %d instead\n",
1290                                 max_threads);
1291                 num_threads = max_threads;
1292         }
1293 out:
1294         ctx->pfs_num_threads = num_threads;
1295         ctx->fs->fs_num_threads = num_threads;
1296 }
1297 #endif
1298
1299 /*
1300  * We need call mark_table_blocks() before multiple
1301  * thread start, since all known system blocks should be
1302  * marked and checked later.
1303  */
1304 static errcode_t e2fsck_pass1_prepare(e2fsck_t ctx)
1305 {
1306         struct problem_context pctx;
1307         ext2_filsys fs = ctx->fs;
1308         unsigned long long readahead_kb;
1309
1310         init_ext2_max_sizes();
1311 #ifdef HAVE_PTHREAD
1312         e2fsck_pass1_set_thread_num(ctx);
1313 #endif
1314         /* If we can do readahead, figure out how many groups to pull in. */
1315         if (!e2fsck_can_readahead(ctx->fs))
1316                 ctx->readahead_kb = 0;
1317         else if (ctx->readahead_kb == ~0ULL)
1318                 ctx->readahead_kb = e2fsck_guess_readahead(ctx->fs);
1319
1320 #ifdef HAVE_PTHREAD
1321         /* don't use more than 1/10 of memory for threads checking */
1322         readahead_kb = get_memory_size() / (10 * ctx->pfs_num_threads);
1323         /* maybe better disable RA if this is too small? */
1324         if (ctx->readahead_kb > readahead_kb)
1325                 ctx->readahead_kb = readahead_kb;
1326 #endif
1327         clear_problem_context(&pctx);
1328         if (!(ctx->options & E2F_OPT_PREEN))
1329                 fix_problem(ctx, PR_1_PASS_HEADER, &pctx);
1330
1331         pctx.errcode = e2fsck_allocate_subcluster_bitmap(ctx->fs,
1332                         _("in-use block map"), EXT2FS_BMAP64_RBTREE,
1333                         "block_found_map", &ctx->block_found_map);
1334         if (pctx.errcode) {
1335                 pctx.num = 1;
1336                 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
1337                 ctx->flags |= E2F_FLAG_ABORT;
1338                 return pctx.errcode;
1339         }
1340         pctx.errcode = e2fsck_allocate_block_bitmap(ctx->fs,
1341                         _("metadata block map"), EXT2FS_BMAP64_RBTREE,
1342                         "block_metadata_map", &ctx->block_metadata_map);
1343         if (pctx.errcode) {
1344                 pctx.num = 1;
1345                 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
1346                 ctx->flags |= E2F_FLAG_ABORT;
1347                 return pctx.errcode;
1348         }
1349
1350         mark_table_blocks(ctx);
1351         pctx.errcode = ext2fs_convert_subcluster_bitmap(ctx->fs,
1352                                                 &ctx->block_found_map);
1353         if (pctx.errcode) {
1354                 fix_problem(ctx, PR_1_CONVERT_SUBCLUSTER, &pctx);
1355                 ctx->flags |= E2F_FLAG_ABORT;
1356                 return pctx.errcode;
1357         }
1358
1359         pctx.errcode = e2fsck_allocate_block_bitmap(ctx->fs,
1360                         _("multiply claimed block map"),
1361                         EXT2FS_BMAP64_RBTREE, "block_dup_map",
1362                         &ctx->block_dup_map);
1363         if (pctx.errcode) {
1364                 pctx.num = 3;
1365                 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR,
1366                             &pctx);
1367                 /* Should never get here */
1368                 ctx->flags |= E2F_FLAG_ABORT;
1369                 return pctx.errcode;
1370         }
1371
1372         if (ext2fs_has_feature_mmp(fs->super) &&
1373             fs->super->s_mmp_block > fs->super->s_first_data_block &&
1374             fs->super->s_mmp_block < ext2fs_blocks_count(fs->super))
1375                 ext2fs_mark_block_bitmap2(ctx->block_found_map,
1376                                           fs->super->s_mmp_block);
1377 #ifdef  HAVE_PTHREAD
1378         pthread_rwlock_init(&ctx->fs_fix_rwlock, NULL);
1379         pthread_rwlock_init(&ctx->fs_block_map_rwlock, NULL);
1380         if (ctx->pfs_num_threads > 1)
1381                 ctx->fs_need_locking = 1;
1382 #endif
1383
1384         return 0;
1385 }
1386
1387 static void e2fsck_pass1_post(e2fsck_t ctx)
1388 {
1389         struct problem_context pctx;
1390         ext2_filsys fs = ctx->fs;
1391         char *block_buf;
1392
1393         if (e2fsck_should_abort(ctx))
1394                 return;
1395
1396         block_buf = (char *)e2fsck_allocate_memory(ctx, ctx->fs->blocksize * 3,
1397                                               "block interate buffer");
1398         reserve_block_for_root_repair(ctx);
1399         reserve_block_for_lnf_repair(ctx);
1400
1401         /*
1402          * If any extended attribute blocks' reference counts need to
1403          * be adjusted, either up (ctx->refcount_extra), or down
1404          * (ctx->refcount), then fix them.
1405          */
1406         if (ctx->refcount) {
1407                 adjust_extattr_refcount(ctx, ctx->refcount, block_buf, -1);
1408                 ea_refcount_free(ctx->refcount);
1409                 ctx->refcount = 0;
1410         }
1411         if (ctx->refcount_extra) {
1412                 adjust_extattr_refcount(ctx, ctx->refcount_extra,
1413                                         block_buf, +1);
1414                 ea_refcount_free(ctx->refcount_extra);
1415                 ctx->refcount_extra = 0;
1416         }
1417
1418         if (ctx->invalid_bitmaps)
1419                 handle_fs_bad_blocks(ctx);
1420
1421         /* We don't need the block_ea_map any more */
1422         if (ctx->block_ea_map) {
1423                 ext2fs_free_block_bitmap(ctx->block_ea_map);
1424                 ctx->block_ea_map = 0;
1425         }
1426
1427         if (ctx->flags & E2F_FLAG_RESIZE_INODE) {
1428                 struct ext2_inode *inode;
1429                 int inode_size = EXT2_INODE_SIZE(fs->super);
1430                 inode = e2fsck_allocate_memory(ctx, inode_size,
1431                                                "scratch inode");
1432
1433                 clear_problem_context(&pctx);
1434                 pctx.errcode = ext2fs_create_resize_inode(fs);
1435                 if (pctx.errcode) {
1436                         if (!fix_problem(ctx, PR_1_RESIZE_INODE_CREATE,
1437                                          &pctx)) {
1438                                 ctx->flags |= E2F_FLAG_ABORT;
1439                                 ext2fs_free_mem(&inode);
1440                                 ext2fs_free_mem(&block_buf);
1441                                 return;
1442                         }
1443                         pctx.errcode = 0;
1444                 }
1445                 if (!pctx.errcode) {
1446                         e2fsck_read_inode(ctx, EXT2_RESIZE_INO, inode,
1447                                           "recreate inode");
1448                         inode->i_mtime = ctx->now;
1449                         e2fsck_write_inode(ctx, EXT2_RESIZE_INO, inode,
1450                                            "recreate inode");
1451                 }
1452                 ctx->flags &= ~E2F_FLAG_RESIZE_INODE;
1453                 ext2fs_free_mem(&inode);
1454         }
1455
1456         if (ctx->flags & E2F_FLAG_RESTART) {
1457                 ext2fs_free_mem(&block_buf);
1458                 return;
1459         }
1460
1461         if (ctx->block_dup_map) {
1462                 if (!(ctx->flags & E2F_FLAG_DUP_BLOCK)) {
1463                         ext2fs_free_mem(&block_buf);
1464                         return;
1465                 }
1466                 if (ctx->options & E2F_OPT_PREEN) {
1467                         clear_problem_context(&pctx);
1468                         fix_problem(ctx, PR_1_DUP_BLOCKS_PREENSTOP, &pctx);
1469                 }
1470                 e2fsck_pass1_dupblocks(ctx, block_buf);
1471                 ext2fs_free_mem(&block_buf);
1472                 ctx->flags &= ~E2F_FLAG_DUP_BLOCK;
1473         }
1474
1475         ctx->flags |= E2F_FLAG_ALLOC_OK;
1476 }
1477
1478
1479 void e2fsck_pass1_run(e2fsck_t ctx)
1480 {
1481         int     i;
1482         ext2_filsys fs = ctx->fs;
1483         ext2_ino_t      ino = 0;
1484         struct ext2_inode *inode = NULL;
1485         ext2_inode_scan scan = NULL;
1486         char            *block_buf = NULL;
1487 #ifdef RESOURCE_TRACK
1488         struct resource_track   rtrack;
1489 #endif
1490         unsigned char   frag, fsize;
1491         struct          problem_context pctx;
1492         struct          scan_callback_struct scan_struct;
1493         struct ext2_super_block *sb = ctx->fs->super;
1494         const char      *old_op;
1495         const char      *eop_next_inode = _("getting next inode from scan");
1496         int             imagic_fs, extent_fs, inlinedata_fs, casefold_fs;
1497         int             low_dtime_check = 1;
1498         unsigned int    inode_size = EXT2_INODE_SIZE(fs->super);
1499         unsigned int    bufsize;
1500         int             failed_csum = 0;
1501         ext2_ino_t      ino_threshold = 0;
1502         dgrp_t          ra_group = 0;
1503         struct ea_quota ea_ibody_quota;
1504         struct process_inode_block *inodes_to_process;
1505         int             process_inode_count, check_mmp;
1506         e2fsck_t        global_ctx = ctx->global_ctx ? ctx->global_ctx : ctx;
1507
1508         init_resource_track(&rtrack, ctx->fs->io);
1509         clear_problem_context(&pctx);
1510
1511         pass1_readahead(ctx, &ra_group, &ino_threshold);
1512         if (ext2fs_has_feature_dir_index(fs->super) &&
1513             !(ctx->options & E2F_OPT_NO)) {
1514                 if (ext2fs_u32_list_create(&ctx->dirs_to_hash, 50))
1515                         ctx->dirs_to_hash = 0;
1516         }
1517
1518 #ifdef MTRACE
1519         mtrace_print("Pass 1");
1520 #endif
1521
1522         imagic_fs = ext2fs_has_feature_imagic_inodes(sb);
1523         extent_fs = ext2fs_has_feature_extents(sb);
1524         inlinedata_fs = ext2fs_has_feature_inline_data(sb);
1525         casefold_fs = ext2fs_has_feature_casefold(sb);
1526
1527         /*
1528          * Allocate bitmaps structures
1529          */
1530         pctx.errcode = e2fsck_allocate_inode_bitmap(fs, _("in-use inode map"),
1531                                                     EXT2FS_BMAP64_RBTREE,
1532                                                     "inode_used_map",
1533                                                     &ctx->inode_used_map);
1534         if (pctx.errcode) {
1535                 pctx.num = 1;
1536                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1537                 ctx->flags |= E2F_FLAG_ABORT;
1538                 return;
1539         }
1540         pctx.errcode = e2fsck_allocate_inode_bitmap(fs,
1541                         _("directory inode map"),
1542                         ctx->global_ctx ? EXT2FS_BMAP64_RBTREE :
1543                         EXT2FS_BMAP64_AUTODIR,
1544                         "inode_dir_map", &ctx->inode_dir_map);
1545         if (pctx.errcode) {
1546                 pctx.num = 2;
1547                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1548                 ctx->flags |= E2F_FLAG_ABORT;
1549                 return;
1550         }
1551         pctx.errcode = e2fsck_allocate_inode_bitmap(fs,
1552                         _("regular file inode map"), EXT2FS_BMAP64_RBTREE,
1553                         "inode_reg_map", &ctx->inode_reg_map);
1554         if (pctx.errcode) {
1555                 pctx.num = 6;
1556                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1557                 ctx->flags |= E2F_FLAG_ABORT;
1558                 return;
1559         }
1560         if (casefold_fs) {
1561                 pctx.errcode =
1562                         e2fsck_allocate_inode_bitmap(fs,
1563                                                      _("inode casefold map"),
1564                                                      EXT2FS_BMAP64_RBTREE,
1565                                                      "inode_casefold_map",
1566                                                      &ctx->inode_casefold_map);
1567                 if (pctx.errcode) {
1568                         pctx.num = 1;
1569                         fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1570                         ctx->flags |= E2F_FLAG_ABORT;
1571                         return;
1572                 }
1573         }
1574         pctx.errcode = e2fsck_setup_icount(ctx, "inode_link_info", 0, NULL,
1575                                            &ctx->inode_link_info);
1576         if (pctx.errcode) {
1577                 fix_problem(ctx, PR_1_ALLOCATE_ICOUNT, &pctx);
1578                 ctx->flags |= E2F_FLAG_ABORT;
1579                 return;
1580         }
1581         bufsize = inode_size;
1582         if (bufsize < sizeof(struct ext2_inode_large))
1583                 bufsize = sizeof(struct ext2_inode_large);
1584         inode = (struct ext2_inode *)
1585                 e2fsck_allocate_memory(ctx, bufsize, "scratch inode");
1586
1587         inodes_to_process = (struct process_inode_block *)
1588                 e2fsck_allocate_memory(ctx,
1589                                        (ctx->process_inode_size *
1590                                         sizeof(struct process_inode_block)),
1591                                        "array of inodes to process");
1592         process_inode_count = 0;
1593
1594         pctx.errcode = ext2fs_init_dblist(fs, 0);
1595         if (pctx.errcode) {
1596                 fix_problem(ctx, PR_1_ALLOCATE_DBCOUNT, &pctx);
1597                 ctx->flags |= E2F_FLAG_ABORT;
1598                 goto endit;
1599         }
1600
1601         /*
1602          * If the last orphan field is set, clear it, since the pass1
1603          * processing will automatically find and clear the orphans.
1604          * In the future, we may want to try using the last_orphan
1605          * linked list ourselves, but for now, we clear it so that the
1606          * ext3 mount code won't get confused.
1607          */
1608         if (!(ctx->options & E2F_OPT_READONLY)) {
1609                 if (fs->super->s_last_orphan) {
1610                         fs->super->s_last_orphan = 0;
1611                         ext2fs_mark_super_dirty(fs);
1612                 }
1613         }
1614
1615         block_buf = (char *) e2fsck_allocate_memory(ctx, fs->blocksize * 3,
1616                                                     "block interate buffer");
1617         if (EXT2_INODE_SIZE(fs->super) == EXT2_GOOD_OLD_INODE_SIZE)
1618                 e2fsck_use_inode_shortcuts(ctx, 1);
1619         e2fsck_intercept_block_allocations(ctx);
1620         old_op = ehandler_operation(_("opening inode scan"));
1621         pctx.errcode = ext2fs_open_inode_scan(fs, ctx->inode_buffer_blocks,
1622                                               &scan);
1623         ehandler_operation(old_op);
1624         if (pctx.errcode) {
1625                 fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx);
1626                 ctx->flags |= E2F_FLAG_ABORT;
1627                 goto endit;
1628         }
1629         ext2fs_inode_scan_flags(scan, EXT2_SF_SKIP_MISSING_ITABLE |
1630                                       EXT2_SF_WARN_GARBAGE_INODES, 0);
1631         ctx->stashed_inode = inode;
1632         scan_struct.ctx = ctx;
1633         scan_struct.block_buf = block_buf;
1634         scan_struct.inodes_to_process = inodes_to_process;
1635         scan_struct.process_inode_count = &process_inode_count;
1636         ext2fs_set_inode_callback(scan, scan_callback, &scan_struct);
1637         if (ctx->progress && ((ctx->progress)(ctx, 1, 0,
1638                                               ctx->fs->group_desc_count)))
1639                 goto endit;
1640         if ((fs->super->s_wtime &&
1641              fs->super->s_wtime < fs->super->s_inodes_count) ||
1642             (fs->super->s_mtime &&
1643              fs->super->s_mtime < fs->super->s_inodes_count) ||
1644             (fs->super->s_mkfs_time &&
1645              fs->super->s_mkfs_time < fs->super->s_inodes_count))
1646                 low_dtime_check = 0;
1647
1648         /* Set up ctx->lost_and_found if possible */
1649         (void) e2fsck_get_lost_and_found(ctx, 0);
1650
1651 #ifdef HAVE_PTHREAD
1652         if (ctx->global_ctx) {
1653                 if (ctx->options & E2F_OPT_DEBUG &&
1654                     ctx->options & E2F_OPT_MULTITHREAD)
1655                         fprintf(stderr, "thread %d jumping to group %u\n",
1656                                         ctx->thread_info.et_thread_index,
1657                                         ctx->thread_info.et_group_start);
1658                 pctx.errcode = ext2fs_inode_scan_goto_blockgroup(scan,
1659                                         ctx->thread_info.et_group_start);
1660                 if (pctx.errcode) {
1661                         fix_problem(ctx, PR_1_PASS_HEADER, &pctx);
1662                         ctx->flags |= E2F_FLAG_ABORT;
1663                         goto endit;
1664                 }
1665         }
1666 #endif
1667
1668         while (1) {
1669                 check_mmp = 0;
1670                 e2fsck_pass1_check_lock(ctx);
1671 #ifdef  HAVE_PTHREAD
1672                 if (!global_ctx->mmp_update_thread) {
1673                         e2fsck_pass1_block_map_w_lock(ctx);
1674                         if (!global_ctx->mmp_update_thread) {
1675                                 global_ctx->mmp_update_thread =
1676                                         ctx->thread_info.et_thread_index + 1;
1677                                 check_mmp = 1;
1678                         }
1679                         e2fsck_pass1_block_map_w_unlock(ctx);
1680                 }
1681
1682                 /* only one active thread could update mmp block. */
1683                 e2fsck_pass1_block_map_r_lock(ctx);
1684                 if (global_ctx->mmp_update_thread ==
1685                     ctx->thread_info.et_thread_index + 1)
1686                         check_mmp = 1;
1687                 e2fsck_pass1_block_map_r_unlock(ctx);
1688 #else
1689                 check_mmp = 1;
1690 #endif
1691
1692                 if (check_mmp && (ino % (fs->super->s_inodes_per_group * 4) == 1)) {
1693                         if (e2fsck_mmp_update(fs))
1694                                 fatal_error(ctx, 0);
1695                 }
1696                 old_op = ehandler_operation(eop_next_inode);
1697                 pctx.errcode = ext2fs_get_next_inode_full(scan, &ino,
1698                                                           inode, inode_size);
1699                 if (ino > ino_threshold)
1700                         pass1_readahead(ctx, &ra_group, &ino_threshold);
1701                 ehandler_operation(old_op);
1702                 if (e2fsck_should_abort(ctx)) {
1703                         e2fsck_pass1_check_unlock(ctx);
1704                         goto endit;
1705                 }
1706                 if (pctx.errcode == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE) {
1707                         /*
1708                          * If badblocks says badblocks is bad, offer to clear
1709                          * the list, update the in-core bb list, and restart
1710                          * the inode scan.
1711                          */
1712                         if (ino == EXT2_BAD_INO &&
1713                             fix_problem(ctx, PR_1_BADBLOCKS_IN_BADBLOCKS,
1714                                         &pctx)) {
1715                                 errcode_t err;
1716
1717                                 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1718                                 ext2fs_badblocks_list_free(ctx->fs->badblocks);
1719                                 ctx->fs->badblocks = NULL;
1720                                 err = ext2fs_read_bb_inode(ctx->fs,
1721                                                         &ctx->fs->badblocks);
1722                                 if (err) {
1723                                         fix_problem(ctx, PR_1_ISCAN_ERROR,
1724                                                     &pctx);
1725                                         ctx->flags |= E2F_FLAG_ABORT;
1726                                         e2fsck_pass1_check_unlock(ctx);
1727                                         goto endit;
1728                                 } else
1729                                         ctx->flags |= E2F_FLAG_RESTART;
1730                                 err = ext2fs_inode_scan_goto_blockgroup(scan,
1731                                                                         0);
1732                                 if (err) {
1733                                         fix_problem(ctx, PR_1_ISCAN_ERROR,
1734                                                     &pctx);
1735                                         ctx->flags |= E2F_FLAG_ABORT;
1736                                         e2fsck_pass1_check_unlock(ctx);
1737                                         goto endit;
1738                                 }
1739                                 e2fsck_pass1_check_unlock(ctx);
1740                                 continue;
1741                         }
1742                         if (!ctx->inode_bb_map)
1743                                 alloc_bb_map(ctx);
1744                         ext2fs_mark_inode_bitmap2(ctx->inode_bb_map, ino);
1745                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1746                         e2fsck_pass1_check_unlock(ctx);
1747                         continue;
1748                 }
1749                 if (pctx.errcode == EXT2_ET_SCAN_FINISHED) {
1750                         e2fsck_pass1_check_unlock(ctx);
1751                         break;
1752                 }
1753                 if (pctx.errcode &&
1754                     pctx.errcode != EXT2_ET_INODE_CSUM_INVALID &&
1755                     pctx.errcode != EXT2_ET_INODE_IS_GARBAGE) {
1756                         fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx);
1757                         ctx->flags |= E2F_FLAG_ABORT;
1758                         e2fsck_pass1_check_unlock(ctx);
1759                         goto endit;
1760                 }
1761                 if (!ino) {
1762                         e2fsck_pass1_check_unlock(ctx);
1763                         break;
1764                 }
1765 #ifdef HAVE_PTHREAD
1766                 if (ctx->global_ctx)
1767                         ctx->thread_info.et_inode_number++;
1768 #endif
1769                 pctx.ino = ino;
1770                 pctx.inode = inode;
1771                 ctx->stashed_ino = ino;
1772
1773                 /* Clear trashed inode? */
1774                 if (pctx.errcode == EXT2_ET_INODE_IS_GARBAGE &&
1775                     inode->i_links_count > 0 &&
1776                     fix_problem(ctx, PR_1_INODE_IS_GARBAGE, &pctx)) {
1777                         pctx.errcode = 0;
1778                         e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1779                 }
1780                 failed_csum = pctx.errcode != 0;
1781
1782                 /*
1783                  * Check for inodes who might have been part of the
1784                  * orphaned list linked list.  They should have gotten
1785                  * dealt with by now, unless the list had somehow been
1786                  * corrupted.
1787                  *
1788                  * FIXME: In the future, inodes which are still in use
1789                  * (and which are therefore) pending truncation should
1790                  * be handled specially.  Right now we just clear the
1791                  * dtime field, and the normal e2fsck handling of
1792                  * inodes where i_size and the inode blocks are
1793                  * inconsistent is to fix i_size, instead of releasing
1794                  * the extra blocks.  This won't catch the inodes that
1795                  * was at the end of the orphan list, but it's better
1796                  * than nothing.  The right answer is that there
1797                  * shouldn't be any bugs in the orphan list handling.  :-)
1798                  */
1799                 if (inode->i_dtime && low_dtime_check &&
1800                     inode->i_dtime < ctx->fs->super->s_inodes_count) {
1801                         if (fix_problem(ctx, PR_1_LOW_DTIME, &pctx)) {
1802                                 inode->i_dtime = inode->i_links_count ?
1803                                         0 : ctx->now;
1804                                 e2fsck_write_inode(ctx, ino, inode,
1805                                                    "pass1");
1806                                 failed_csum = 0;
1807                         }
1808                 }
1809
1810                 if (inode->i_links_count) {
1811                         pctx.errcode = ext2fs_icount_store(ctx->inode_link_info,
1812                                            ino, inode->i_links_count);
1813                         if (pctx.errcode) {
1814                                 pctx.num = inode->i_links_count;
1815                                 fix_problem(ctx, PR_1_ICOUNT_STORE, &pctx);
1816                                 ctx->flags |= E2F_FLAG_ABORT;
1817                                 e2fsck_pass1_check_unlock(ctx);
1818                                 goto endit;
1819                         }
1820                 } else if ((ino >= EXT2_FIRST_INODE(fs->super)) &&
1821                            !quota_inum_is_reserved(fs, ino)) {
1822                         if (!inode->i_dtime && inode->i_mode) {
1823                                 if (fix_problem(ctx,
1824                                             PR_1_ZERO_DTIME, &pctx)) {
1825                                         inode->i_dtime = ctx->now;
1826                                         e2fsck_write_inode(ctx, ino, inode,
1827                                                            "pass1");
1828                                         failed_csum = 0;
1829                                 }
1830                         }
1831                         FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1832                         e2fsck_pass1_check_unlock(ctx);
1833                         continue;
1834                 }
1835
1836                 if ((inode->i_flags & EXT4_CASEFOLD_FL) &&
1837                     ((!LINUX_S_ISDIR(inode->i_mode) &&
1838                       fix_problem(ctx, PR_1_CASEFOLD_NONDIR, &pctx)) ||
1839                      (!casefold_fs &&
1840                       fix_problem(ctx, PR_1_CASEFOLD_FEATURE, &pctx)))) {
1841                         inode->i_flags &= ~EXT4_CASEFOLD_FL;
1842                         e2fsck_write_inode(ctx, ino, inode, "pass1");
1843                 }
1844
1845                 /* Conflicting inlinedata/extents inode flags? */
1846                 if ((inode->i_flags & EXT4_INLINE_DATA_FL) &&
1847                     (inode->i_flags & EXT4_EXTENTS_FL)) {
1848                         int res = fix_inline_data_extents_file(ctx, ino, inode,
1849                                                                inode_size,
1850                                                                &pctx);
1851                         if (res < 0) {
1852                                 /* skip FINISH_INODE_LOOP */
1853                                 e2fsck_pass1_check_unlock(ctx);
1854                                 continue;
1855                         }
1856                 }
1857
1858                 /* Test for incorrect inline_data flags settings. */
1859                 if ((inode->i_flags & EXT4_INLINE_DATA_FL) && !inlinedata_fs &&
1860                     (ino >= EXT2_FIRST_INODE(fs->super))) {
1861                         size_t size = 0;
1862
1863                         pctx.errcode = get_inline_data_ea_size(fs, ino, &size);
1864                         if (!pctx.errcode &&
1865                             fix_problem(ctx, PR_1_INLINE_DATA_FEATURE, &pctx)) {
1866                                 e2fsck_pass1_fix_lock(ctx);
1867                                 ext2fs_set_feature_inline_data(sb);
1868                                 ext2fs_mark_super_dirty(fs);
1869                                 e2fsck_pass1_fix_unlock(ctx);
1870                                 inlinedata_fs = 1;
1871                         } else if (fix_problem(ctx, PR_1_INLINE_DATA_SET, &pctx)) {
1872                                 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1873                                 /* skip FINISH_INODE_LOOP */
1874                                 e2fsck_pass1_check_unlock(ctx);
1875                                 continue;
1876                         }
1877                 }
1878
1879                 /* Test for inline data flag but no attr */
1880                 if ((inode->i_flags & EXT4_INLINE_DATA_FL) && inlinedata_fs &&
1881                     (ino >= EXT2_FIRST_INODE(fs->super))) {
1882                         size_t size = 0;
1883                         errcode_t err;
1884                         int flags;
1885
1886                         flags = fs->flags;
1887                         if (failed_csum)
1888                                 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
1889                         err = get_inline_data_ea_size(fs, ino, &size);
1890                         fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
1891                                     (fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
1892
1893                         switch (err) {
1894                         case 0:
1895                                 /* Everything is awesome... */
1896                                 break;
1897                         case EXT2_ET_BAD_EA_BLOCK_NUM:
1898                         case EXT2_ET_BAD_EA_HASH:
1899                         case EXT2_ET_BAD_EA_HEADER:
1900                         case EXT2_ET_EA_BAD_NAME_LEN:
1901                         case EXT2_ET_EA_BAD_VALUE_SIZE:
1902                         case EXT2_ET_EA_KEY_NOT_FOUND:
1903                         case EXT2_ET_EA_NO_SPACE:
1904                         case EXT2_ET_MISSING_EA_FEATURE:
1905                         case EXT2_ET_INLINE_DATA_CANT_ITERATE:
1906                         case EXT2_ET_INLINE_DATA_NO_BLOCK:
1907                         case EXT2_ET_INLINE_DATA_NO_SPACE:
1908                         case EXT2_ET_NO_INLINE_DATA:
1909                         case EXT2_ET_EXT_ATTR_CSUM_INVALID:
1910                         case EXT2_ET_EA_BAD_VALUE_OFFSET:
1911                         case EXT2_ET_EA_INODE_CORRUPTED:
1912                                 /* broken EA or no system.data EA; truncate */
1913                                 if (fix_problem(ctx, PR_1_INLINE_DATA_NO_ATTR,
1914                                                 &pctx)) {
1915                                         err = ext2fs_inode_size_set(fs, inode, 0);
1916                                         if (err) {
1917                                                 pctx.errcode = err;
1918                                                 ctx->flags |= E2F_FLAG_ABORT;
1919                                                 e2fsck_pass1_check_unlock(ctx);
1920                                                 goto endit;
1921                                         }
1922                                         inode->i_flags &= ~EXT4_INLINE_DATA_FL;
1923                                         memset(&inode->i_block, 0,
1924                                                sizeof(inode->i_block));
1925                                         e2fsck_write_inode(ctx, ino, inode,
1926                                                            "pass1");
1927                                         failed_csum = 0;
1928                                 }
1929                                 break;
1930                         default:
1931                                 /* Some other kind of non-xattr error? */
1932                                 pctx.errcode = err;
1933                                 ctx->flags |= E2F_FLAG_ABORT;
1934                                 e2fsck_pass1_check_unlock(ctx);
1935                                 goto endit;
1936                         }
1937                 }
1938
1939                 /*
1940                  * Test for incorrect extent flag settings.
1941                  *
1942                  * On big-endian machines we must be careful:
1943                  * When the inode is read, the i_block array is not swapped
1944                  * if the extent flag is set.  Therefore if we are testing
1945                  * for or fixing a wrongly-set flag, we must potentially
1946                  * (un)swap before testing, or after fixing.
1947                  */
1948
1949                 /*
1950                  * In this case the extents flag was set when read, so
1951                  * extent_header_verify is ok.  If the inode is cleared,
1952                  * no need to swap... so no extra swapping here.
1953                  */
1954                 if ((inode->i_flags & EXT4_EXTENTS_FL) && !extent_fs &&
1955                     (inode->i_links_count || (ino == EXT2_BAD_INO) ||
1956                      (ino == EXT2_ROOT_INO) || (ino == EXT2_JOURNAL_INO))) {
1957                         if ((ext2fs_extent_header_verify(inode->i_block,
1958                                                  sizeof(inode->i_block)) == 0) &&
1959                             fix_problem(ctx, PR_1_EXTENT_FEATURE, &pctx)) {
1960                                 e2fsck_pass1_fix_lock(ctx);
1961                                 ext2fs_set_feature_extents(sb);
1962                                 ext2fs_mark_super_dirty(fs);
1963                                 extent_fs = 1;
1964                                 e2fsck_pass1_fix_unlock(ctx);
1965                         } else if (fix_problem(ctx, PR_1_EXTENTS_SET, &pctx)) {
1966                         clear_inode:
1967                                 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1968                                 if (ino == EXT2_BAD_INO)
1969                                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map,
1970                                                                  ino);
1971                                 /* skip FINISH_INODE_LOOP */
1972                                 e2fsck_pass1_check_unlock(ctx);
1973                                 continue;
1974                         }
1975                 }
1976
1977                 /*
1978                  * For big-endian machines:
1979                  * If the inode didn't have the extents flag set when it
1980                  * was read, then the i_blocks array was swapped.  To test
1981                  * as an extents header, we must swap it back first.
1982                  * IF we then set the extents flag, the entire i_block
1983                  * array must be un/re-swapped to make it proper extents data.
1984                  */
1985                 if (extent_fs && !(inode->i_flags & EXT4_EXTENTS_FL) &&
1986                     (inode->i_links_count || (ino == EXT2_BAD_INO) ||
1987                      (ino == EXT2_ROOT_INO) || (ino == EXT2_JOURNAL_INO)) &&
1988                     (LINUX_S_ISREG(inode->i_mode) ||
1989                      LINUX_S_ISDIR(inode->i_mode))) {
1990                         void *ehp;
1991 #ifdef WORDS_BIGENDIAN
1992                         __u32 tmp_block[EXT2_N_BLOCKS];
1993
1994                         for (i = 0; i < EXT2_N_BLOCKS; i++)
1995                                 tmp_block[i] = ext2fs_swab32(inode->i_block[i]);
1996                         ehp = tmp_block;
1997 #else
1998                         ehp = inode->i_block;
1999 #endif
2000                         if ((ext2fs_extent_header_verify(ehp,
2001                                          sizeof(inode->i_block)) == 0) &&
2002                             (fix_problem(ctx, PR_1_UNSET_EXTENT_FL, &pctx))) {
2003                                 inode->i_flags |= EXT4_EXTENTS_FL;
2004 #ifdef WORDS_BIGENDIAN
2005                                 memcpy(inode->i_block, tmp_block,
2006                                        sizeof(inode->i_block));
2007 #endif
2008                                 e2fsck_write_inode(ctx, ino, inode, "pass1");
2009                                 failed_csum = 0;
2010                         }
2011                 }
2012
2013                 if (ino == EXT2_BAD_INO) {
2014                         struct process_block_struct pb;
2015
2016                         if ((failed_csum || inode->i_mode || inode->i_uid ||
2017                              inode->i_gid || inode->i_links_count ||
2018                              (inode->i_flags & EXT4_INLINE_DATA_FL) ||
2019                              inode->i_file_acl) &&
2020                             fix_problem(ctx, PR_1_INVALID_BAD_INODE, &pctx)) {
2021                                 memset(inode, 0, sizeof(struct ext2_inode));
2022                                 e2fsck_write_inode(ctx, ino, inode,
2023                                                    "clear bad inode");
2024                                 failed_csum = 0;
2025                         }
2026
2027                         e2fsck_pass1_block_map_r_lock(ctx);
2028                         pctx.errcode = ext2fs_copy_bitmap(ctx->global_ctx ?
2029                                         ctx->global_ctx->block_found_map :
2030                                         ctx->block_found_map, &pb.fs_meta_blocks);
2031                         e2fsck_pass1_block_map_r_unlock(ctx);
2032                         if (pctx.errcode) {
2033                                 pctx.num = 4;
2034                                 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
2035                                 ctx->flags |= E2F_FLAG_ABORT;
2036                                 e2fsck_pass1_check_unlock(ctx);
2037                                 goto endit;
2038                         }
2039                         pb.ino = EXT2_BAD_INO;
2040                         pb.num_blocks = pb.last_block = 0;
2041                         pb.last_db_block = -1;
2042                         pb.num_illegal_blocks = 0;
2043                         pb.suppress = 0; pb.clear = 0; pb.is_dir = 0;
2044                         pb.is_reg = 0; pb.fragmented = 0; pb.bbcheck = 0;
2045                         pb.inode = inode;
2046                         pb.pctx = &pctx;
2047                         pb.ctx = ctx;
2048                         pctx.errcode = ext2fs_block_iterate3(fs, ino, 0,
2049                                      block_buf, process_bad_block, &pb);
2050                         ext2fs_free_block_bitmap(pb.fs_meta_blocks);
2051                         if (pctx.errcode) {
2052                                 fix_problem(ctx, PR_1_BLOCK_ITERATE, &pctx);
2053                                 ctx->flags |= E2F_FLAG_ABORT;
2054                                 e2fsck_pass1_check_unlock(ctx);
2055                                 goto endit;
2056                         }
2057                         if (pb.bbcheck)
2058                                 if (!fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK_PROMPT, &pctx)) {
2059                                 ctx->flags |= E2F_FLAG_ABORT;
2060                                 e2fsck_pass1_check_unlock(ctx);
2061                                 goto endit;
2062                         }
2063                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
2064                         clear_problem_context(&pctx);
2065                         FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
2066                         e2fsck_pass1_check_unlock(ctx);
2067                         continue;
2068                 } else if (ino == EXT2_ROOT_INO) {
2069                         /*
2070                          * Make sure the root inode is a directory; if
2071                          * not, offer to clear it.  It will be
2072                          * regenerated in pass #3.
2073                          */
2074                         if (!LINUX_S_ISDIR(inode->i_mode)) {
2075                                 if (fix_problem(ctx, PR_1_ROOT_NO_DIR, &pctx))
2076                                         goto clear_inode;
2077                         }
2078                         /*
2079                          * If dtime is set, offer to clear it.  mke2fs
2080                          * version 0.2b created filesystems with the
2081                          * dtime field set for the root and lost+found
2082                          * directories.  We won't worry about
2083                          * /lost+found, since that can be regenerated
2084                          * easily.  But we will fix the root directory
2085                          * as a special case.
2086                          */
2087                         if (inode->i_dtime && inode->i_links_count) {
2088                                 if (fix_problem(ctx, PR_1_ROOT_DTIME, &pctx)) {
2089                                         inode->i_dtime = 0;
2090                                         e2fsck_write_inode(ctx, ino, inode,
2091                                                            "pass1");
2092                                         failed_csum = 0;
2093                                 }
2094                         }
2095                 } else if (ino == EXT2_JOURNAL_INO) {
2096                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
2097                         if (fs->super->s_journal_inum == EXT2_JOURNAL_INO) {
2098                                 if (!LINUX_S_ISREG(inode->i_mode) &&
2099                                     fix_problem(ctx, PR_1_JOURNAL_BAD_MODE,
2100                                                 &pctx)) {
2101                                         inode->i_mode = LINUX_S_IFREG;
2102                                         e2fsck_write_inode(ctx, ino, inode,
2103                                                            "pass1");
2104                                         failed_csum = 0;
2105                                 }
2106                                 check_blocks(ctx, &pctx, block_buf, NULL);
2107                                 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
2108                                 e2fsck_pass1_check_unlock(ctx);
2109                                 continue;
2110                         }
2111                         if ((inode->i_links_count ||
2112                              inode->i_blocks || inode->i_block[0]) &&
2113                             fix_problem(ctx, PR_1_JOURNAL_INODE_NOT_CLEAR,
2114                                         &pctx)) {
2115                                 memset(inode, 0, inode_size);
2116                                 ext2fs_icount_store(ctx->inode_link_info,
2117                                                     ino, 0);
2118                                 e2fsck_write_inode_full(ctx, ino, inode,
2119                                                         inode_size, "pass1");
2120                                 failed_csum = 0;
2121                         }
2122                 } else if (quota_inum_is_reserved(fs, ino)) {
2123                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
2124                         if (ext2fs_has_feature_quota(fs->super) &&
2125                             quota_inum_is_super(fs->super, ino)) {
2126                                 if (!LINUX_S_ISREG(inode->i_mode) &&
2127                                     fix_problem(ctx, PR_1_QUOTA_BAD_MODE,
2128                                                         &pctx)) {
2129                                         inode->i_mode = LINUX_S_IFREG;
2130                                         e2fsck_write_inode(ctx, ino, inode,
2131                                                         "pass1");
2132                                         failed_csum = 0;
2133                                 }
2134                                 check_blocks(ctx, &pctx, block_buf, NULL);
2135                                 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
2136                                 e2fsck_pass1_check_unlock(ctx);
2137                                 continue;
2138                         }
2139                         if ((inode->i_links_count ||
2140                              inode->i_blocks || inode->i_block[0]) &&
2141                             fix_problem(ctx, PR_1_QUOTA_INODE_NOT_CLEAR,
2142                                         &pctx)) {
2143                                 memset(inode, 0, inode_size);
2144                                 ext2fs_icount_store(ctx->inode_link_info,
2145                                                     ino, 0);
2146                                 e2fsck_write_inode_full(ctx, ino, inode,
2147                                                         inode_size, "pass1");
2148                                 failed_csum = 0;
2149                         }
2150                 } else if (ino < EXT2_FIRST_INODE(fs->super)) {
2151                         problem_t problem = 0;
2152
2153                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
2154                         if (ino == EXT2_BOOT_LOADER_INO) {
2155                                 if (LINUX_S_ISDIR(inode->i_mode))
2156                                         problem = PR_1_RESERVED_BAD_MODE;
2157                         } else if (ino == EXT2_RESIZE_INO) {
2158                                 if (inode->i_mode &&
2159                                     !LINUX_S_ISREG(inode->i_mode))
2160                                         problem = PR_1_RESERVED_BAD_MODE;
2161                         } else {
2162                                 if (inode->i_mode != 0)
2163                                         problem = PR_1_RESERVED_BAD_MODE;
2164                         }
2165                         if (problem) {
2166                                 if (fix_problem(ctx, problem, &pctx)) {
2167                                         inode->i_mode = 0;
2168                                         e2fsck_write_inode(ctx, ino, inode,
2169                                                            "pass1");
2170                                         failed_csum = 0;
2171                                 }
2172                         }
2173                         check_blocks(ctx, &pctx, block_buf, NULL);
2174                         FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
2175                         e2fsck_pass1_check_unlock(ctx);
2176                         continue;
2177                 }
2178
2179                 if (!inode->i_links_count) {
2180                         FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
2181                         e2fsck_pass1_check_unlock(ctx);
2182                         continue;
2183                 }
2184                 /*
2185                  * n.b.  0.3c ext2fs code didn't clear i_links_count for
2186                  * deleted files.  Oops.
2187                  *
2188                  * Since all new ext2 implementations get this right,
2189                  * we now assume that the case of non-zero
2190                  * i_links_count and non-zero dtime means that we
2191                  * should keep the file, not delete it.
2192                  *
2193                  */
2194                 if (inode->i_dtime) {
2195                         if (fix_problem(ctx, PR_1_SET_DTIME, &pctx)) {
2196                                 inode->i_dtime = 0;
2197                                 e2fsck_write_inode(ctx, ino, inode, "pass1");
2198                                 failed_csum = 0;
2199                         }
2200                 }
2201
2202                 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
2203                 switch (fs->super->s_creator_os) {
2204                     case EXT2_OS_HURD:
2205                         frag = inode->osd2.hurd2.h_i_frag;
2206                         fsize = inode->osd2.hurd2.h_i_fsize;
2207                         break;
2208                     default:
2209                         frag = fsize = 0;
2210                 }
2211
2212                 if (inode->i_faddr || frag || fsize ||
2213                     (!ext2fs_has_feature_largedir(fs->super) &&
2214                     (LINUX_S_ISDIR(inode->i_mode) && inode->i_size_high)))
2215                         mark_inode_bad(ctx, ino);
2216                 if ((fs->super->s_creator_os != EXT2_OS_HURD) &&
2217                     !ext2fs_has_feature_64bit(fs->super) &&
2218                     inode->osd2.linux2.l_i_file_acl_high != 0)
2219                         mark_inode_bad(ctx, ino);
2220                 if ((fs->super->s_creator_os != EXT2_OS_HURD) &&
2221                     !ext2fs_has_feature_huge_file(fs->super) &&
2222                     (inode->osd2.linux2.l_i_blocks_hi != 0))
2223                         mark_inode_bad(ctx, ino);
2224                 if (inode->i_flags & EXT2_IMAGIC_FL) {
2225                         if (imagic_fs) {
2226                                 if (!ctx->inode_imagic_map)
2227                                         alloc_imagic_map(ctx);
2228                                 ext2fs_mark_inode_bitmap2(ctx->inode_imagic_map,
2229                                                          ino);
2230                         } else {
2231                                 if (fix_problem(ctx, PR_1_SET_IMAGIC, &pctx)) {
2232                                         inode->i_flags &= ~EXT2_IMAGIC_FL;
2233                                         e2fsck_write_inode(ctx, ino,
2234                                                            inode, "pass1");
2235                                         failed_csum = 0;
2236                                 }
2237                         }
2238                 }
2239
2240                 check_inode_extra_space(ctx, &pctx, &ea_ibody_quota);
2241                 check_is_really_dir(ctx, &pctx, block_buf);
2242
2243                 /*
2244                  * ext2fs_inode_has_valid_blocks2 does not actually look
2245                  * at i_block[] values, so not endian-sensitive here.
2246                  */
2247                 if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL) &&
2248                     LINUX_S_ISLNK(inode->i_mode) &&
2249                     !ext2fs_inode_has_valid_blocks2(fs, inode) &&
2250                     fix_problem(ctx, PR_1_FAST_SYMLINK_EXTENT_FL, &pctx)) {
2251                         inode->i_flags &= ~EXT4_EXTENTS_FL;
2252                         e2fsck_write_inode(ctx, ino, inode, "pass1");
2253                         failed_csum = 0;
2254                 }
2255
2256                 if ((inode->i_flags & EXT4_ENCRYPT_FL) &&
2257                     add_encrypted_file(ctx, &pctx) < 0)
2258                         goto clear_inode;
2259
2260                 if (casefold_fs && inode->i_flags & EXT4_CASEFOLD_FL)
2261                         ext2fs_mark_inode_bitmap2(ctx->inode_casefold_map, ino);
2262
2263                 if (LINUX_S_ISDIR(inode->i_mode)) {
2264                         ext2fs_mark_inode_bitmap2(ctx->inode_dir_map, ino);
2265                         e2fsck_add_dir_info(ctx, ino, 0);
2266                         ctx->fs_directory_count++;
2267                         if (inode->i_flags & EXT4_CASEFOLD_FL)
2268                                 add_casefolded_dir(ctx, ino);
2269                 } else if (LINUX_S_ISREG (inode->i_mode)) {
2270                         ext2fs_mark_inode_bitmap2(ctx->inode_reg_map, ino);
2271                         ctx->fs_regular_count++;
2272                 } else if (LINUX_S_ISCHR (inode->i_mode) &&
2273                            e2fsck_pass1_check_device_inode(fs, inode)) {
2274                         check_extents_inlinedata(ctx, &pctx);
2275                         check_immutable(ctx, &pctx);
2276                         check_size(ctx, &pctx);
2277                         ctx->fs_chardev_count++;
2278                 } else if (LINUX_S_ISBLK (inode->i_mode) &&
2279                            e2fsck_pass1_check_device_inode(fs, inode)) {
2280                         check_extents_inlinedata(ctx, &pctx);
2281                         check_immutable(ctx, &pctx);
2282                         check_size(ctx, &pctx);
2283                         ctx->fs_blockdev_count++;
2284                 } else if (LINUX_S_ISLNK (inode->i_mode) &&
2285                            e2fsck_pass1_check_symlink(fs, ino, inode,
2286                                                       block_buf)) {
2287                         check_immutable(ctx, &pctx);
2288                         ctx->fs_symlinks_count++;
2289                         if (inode->i_flags & EXT4_INLINE_DATA_FL) {
2290                                 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
2291                                 e2fsck_pass1_check_unlock(ctx);
2292                                 continue;
2293                         } else if (ext2fs_is_fast_symlink(inode)) {
2294                                 ctx->fs_fast_symlinks_count++;
2295                                 check_blocks(ctx, &pctx, block_buf,
2296                                              &ea_ibody_quota);
2297                                 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
2298                                 e2fsck_pass1_check_unlock(ctx);
2299                                 continue;
2300                         }
2301                 }
2302                 else if (LINUX_S_ISFIFO (inode->i_mode) &&
2303                          e2fsck_pass1_check_device_inode(fs, inode)) {
2304                         check_extents_inlinedata(ctx, &pctx);
2305                         check_immutable(ctx, &pctx);
2306                         check_size(ctx, &pctx);
2307                         ctx->fs_fifo_count++;
2308                 } else if ((LINUX_S_ISSOCK (inode->i_mode)) &&
2309                            e2fsck_pass1_check_device_inode(fs, inode)) {
2310                         check_extents_inlinedata(ctx, &pctx);
2311                         check_immutable(ctx, &pctx);
2312                         check_size(ctx, &pctx);
2313                         ctx->fs_sockets_count++;
2314                 } else
2315                         mark_inode_bad(ctx, ino);
2316                 if (!(inode->i_flags & EXT4_EXTENTS_FL) &&
2317                     !(inode->i_flags & EXT4_INLINE_DATA_FL)) {
2318                         if (inode->i_block[EXT2_IND_BLOCK])
2319                                 ctx->fs_ind_count++;
2320                         if (inode->i_block[EXT2_DIND_BLOCK])
2321                                 ctx->fs_dind_count++;
2322                         if (inode->i_block[EXT2_TIND_BLOCK])
2323                                 ctx->fs_tind_count++;
2324                 }
2325                 if (!(inode->i_flags & EXT4_EXTENTS_FL) &&
2326                     !(inode->i_flags & EXT4_INLINE_DATA_FL) &&
2327                     (inode->i_block[EXT2_IND_BLOCK] ||
2328                      inode->i_block[EXT2_DIND_BLOCK] ||
2329                      inode->i_block[EXT2_TIND_BLOCK] ||
2330                      ext2fs_file_acl_block(fs, inode))) {
2331                         struct process_inode_block *itp;
2332
2333                         itp = &inodes_to_process[process_inode_count];
2334                         itp->ino = ino;
2335                         itp->ea_ibody_quota = ea_ibody_quota;
2336                         if (inode_size < sizeof(struct ext2_inode_large))
2337                                 memcpy(&itp->inode, inode, inode_size);
2338                         else
2339                                 memcpy(&itp->inode, inode, sizeof(itp->inode));
2340                         process_inode_count++;
2341                 } else
2342                         check_blocks(ctx, &pctx, block_buf, &ea_ibody_quota);
2343
2344                 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
2345
2346                 if (e2fsck_should_abort(ctx)) {
2347                         e2fsck_pass1_check_unlock(ctx);
2348                         goto endit;
2349                 }
2350
2351                 if (process_inode_count >= ctx->process_inode_size) {
2352                         process_inodes(ctx, block_buf, inodes_to_process,
2353                                        &process_inode_count);
2354
2355                         if (e2fsck_should_abort(ctx)) {
2356                                 e2fsck_pass1_check_unlock(ctx);
2357                                 goto endit;
2358                         }
2359                 }
2360                 e2fsck_pass1_check_unlock(ctx);
2361         }
2362         process_inodes(ctx, block_buf, inodes_to_process,
2363                        &process_inode_count);
2364         ext2fs_close_inode_scan(scan);
2365         scan = NULL;
2366
2367         if (ctx->ea_block_quota_blocks) {
2368                 ea_refcount_free(ctx->ea_block_quota_blocks);
2369                 ctx->ea_block_quota_blocks = 0;
2370         }
2371
2372         if (ctx->ea_block_quota_inodes) {
2373                 ea_refcount_free(ctx->ea_block_quota_inodes);
2374                 ctx->ea_block_quota_inodes = 0;
2375         }
2376
2377         /* We don't need the encryption policy => ID map any more */
2378         destroy_encryption_policy_map(ctx);
2379
2380         if (ctx->flags & E2F_FLAG_RESTART) {
2381                 /*
2382                  * Only the master copy of the superblock and block
2383                  * group descriptors are going to be written during a
2384                  * restart, so set the superblock to be used to be the
2385                  * master superblock.
2386                  */
2387                 ctx->use_superblock = 0;
2388                 goto endit;
2389         }
2390
2391         if (ctx->large_dirs && !ext2fs_has_feature_largedir(ctx->fs->super)) {
2392                 ext2_filsys fs = ctx->fs;
2393
2394                 if (fix_problem(ctx, PR_2_FEATURE_LARGE_DIRS, &pctx)) {
2395                         ext2fs_set_feature_largedir(fs->super);
2396                         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
2397                         ext2fs_mark_super_dirty(fs);
2398                 }
2399                 if (fs->super->s_rev_level == EXT2_GOOD_OLD_REV &&
2400                     fix_problem(ctx, PR_1_FS_REV_LEVEL, &pctx)) {
2401                         ext2fs_update_dynamic_rev(fs);
2402                         ext2fs_mark_super_dirty(fs);
2403                 }
2404         }
2405
2406         ctx->flags |= E2F_FLAG_ALLOC_OK;
2407         ext2fs_free_mem(&inodes_to_process);
2408 endit:
2409         e2fsck_use_inode_shortcuts(ctx, 0);
2410         ext2fs_free_mem(&inodes_to_process);
2411         inodes_to_process = 0;
2412
2413         if (scan)
2414                 ext2fs_close_inode_scan(scan);
2415         if (block_buf)
2416                 ext2fs_free_mem(&block_buf);
2417         if (inode)
2418                 ext2fs_free_mem(&inode);
2419
2420         /*
2421          * The l+f inode may have been cleared, so zap it now and
2422          * later passes will recalculate it if necessary
2423          */
2424         ctx->lost_and_found = 0;
2425
2426         if ((ctx->flags & E2F_FLAG_SIGNAL_MASK) == 0)
2427                 print_resource_track(ctx, _("Pass 1"), &rtrack, ctx->fs->io);
2428         else
2429                 ctx->invalid_bitmaps++;
2430 #ifdef  HAVE_PTHREAD
2431         /* reset update_thread after this thread exit */
2432         e2fsck_pass1_block_map_w_lock(ctx);
2433         if (check_mmp)
2434                 global_ctx->mmp_update_thread = 0;
2435         e2fsck_pass1_block_map_w_unlock(ctx);
2436 #endif
2437 }
2438
2439 #ifdef HAVE_PTHREAD
2440 static errcode_t e2fsck_pass1_copy_bitmap(ext2_filsys fs, ext2fs_generic_bitmap *src,
2441                                           ext2fs_generic_bitmap *dest)
2442 {
2443         errcode_t ret;
2444
2445         ret = ext2fs_copy_bitmap(*src, dest);
2446         if (ret)
2447                 return ret;
2448
2449         (*dest)->fs = fs;
2450
2451         return 0;
2452 }
2453
2454 static void e2fsck_pass1_free_bitmap(ext2fs_generic_bitmap *bitmap)
2455 {
2456         if (*bitmap) {
2457                 ext2fs_free_generic_bmap(*bitmap);
2458                 *bitmap = NULL;
2459         }
2460
2461 }
2462
2463 static errcode_t e2fsck_pass1_merge_bitmap(ext2_filsys fs, ext2fs_generic_bitmap *src,
2464                                           ext2fs_generic_bitmap *dest)
2465 {
2466         errcode_t ret = 0;
2467
2468         if (*src) {
2469                 if (*dest == NULL) {
2470                         *dest = *src;
2471                         *src = NULL;
2472                 } else {
2473                         ret = ext2fs_merge_bitmap(*src, *dest, NULL, NULL);
2474                         if (ret)
2475                                 return ret;
2476                 }
2477                 (*dest)->fs = fs;
2478         }
2479
2480         return 0;
2481 }
2482
2483 static errcode_t e2fsck_pass1_copy_fs(ext2_filsys dest, e2fsck_t src_context,
2484                                       ext2_filsys src)
2485 {
2486         errcode_t       retval;
2487
2488         memcpy(dest, src, sizeof(struct struct_ext2_filsys));
2489         dest->inode_map = NULL;
2490         dest->block_map = NULL;
2491         dest->badblocks = NULL;
2492         if (dest->dblist)
2493                 dest->dblist->fs = dest;
2494         if (src->block_map) {
2495                 retval = e2fsck_pass1_copy_bitmap(dest, &src->block_map,
2496                                                   &dest->block_map);
2497                 if (retval)
2498                         return retval;
2499         }
2500         if (src->inode_map) {
2501                 retval = e2fsck_pass1_copy_bitmap(dest, &src->inode_map,
2502                                                   &dest->inode_map);
2503                 if (retval)
2504                         return retval;
2505         }
2506
2507         if (src->badblocks) {
2508                 retval = ext2fs_badblocks_copy(src->badblocks,
2509                                                &dest->badblocks);
2510                 if (retval)
2511                         return retval;
2512         }
2513
2514         /* disable it for now */
2515         src_context->openfs_flags &= ~EXT2_FLAG_EXCLUSIVE;
2516         retval = ext2fs_open_channel(dest, src_context->io_options,
2517                                      src_context->io_manager,
2518                                      src_context->openfs_flags,
2519                                      src->io->block_size);
2520         if (retval)
2521                 return retval;
2522
2523         /* Block size might not be default */
2524         io_channel_set_blksize(dest->io, src->io->block_size);
2525         ehandler_init(dest->io);
2526
2527         assert(dest->io->magic == src->io->magic);
2528         assert(dest->io->manager == src->io->manager);
2529         assert(strcmp(dest->io->name, src->io->name) == 0);
2530         assert(dest->io->block_size == src->io->block_size);
2531         assert(dest->io->read_error == src->io->read_error);
2532         assert(dest->io->write_error == src->io->write_error);
2533         assert(dest->io->refcount == src->io->refcount);
2534         assert(dest->io->flags == src->io->flags);
2535         assert(dest->io->app_data == dest);
2536         assert(src->io->app_data == src);
2537         assert(dest->io->align == src->io->align);
2538
2539         /* The data should be written to disk immediately */
2540         dest->io->flags |= CHANNEL_FLAGS_WRITETHROUGH;
2541         /* icache will be rebuilt if needed, so do not copy from @src */
2542         src->icache = NULL;
2543         return 0;
2544 }
2545
2546 static int e2fsck_pass1_merge_fs(ext2_filsys dest, ext2_filsys src)
2547 {
2548         struct ext2_inode_cache *icache = dest->icache;
2549         errcode_t retval = 0;
2550         io_channel dest_io;
2551         io_channel dest_image_io;
2552         ext2fs_inode_bitmap inode_map;
2553         ext2fs_block_bitmap block_map;
2554         ext2_badblocks_list badblocks;
2555         ext2_dblist dblist;
2556         int flags;
2557         e2fsck_t dest_ctx = dest->priv_data;
2558
2559         dest_io = dest->io;
2560         dest_image_io = dest->image_io;
2561         inode_map = dest->inode_map;
2562         block_map = dest->block_map;
2563         badblocks = dest->badblocks;
2564         dblist = dest->dblist;
2565         flags = dest->flags;
2566
2567         memcpy(dest, src, sizeof(struct struct_ext2_filsys));
2568         dest->io = dest_io;
2569         dest->image_io = dest_image_io;
2570         dest->icache = icache;
2571         dest->inode_map = inode_map;
2572         dest->block_map = block_map;
2573         dest->badblocks = badblocks;
2574         dest->dblist = dblist;
2575         dest->priv_data = dest_ctx;
2576         if (dest->dblist)
2577                 dest->dblist->fs = dest;
2578         dest->flags = src->flags | flags;
2579         if (!(src->flags & EXT2_FLAG_VALID) || !(flags & EXT2_FLAG_VALID))
2580                 ext2fs_unmark_valid(dest);
2581
2582         if (src->icache) {
2583                 ext2fs_free_inode_cache(src->icache);
2584                 src->icache = NULL;
2585         }
2586
2587         retval = e2fsck_pass1_merge_bitmap(dest, &src->inode_map,
2588                                            &dest->inode_map);
2589         if (retval)
2590                 goto out;
2591
2592         retval = e2fsck_pass1_merge_bitmap(dest, &src->block_map,
2593                                           &dest->block_map);
2594         if (retval)
2595                 goto out;
2596
2597         if (src->dblist) {
2598                 if (dest->dblist) {
2599                         retval = ext2fs_merge_dblist(src->dblist,
2600                                                      dest->dblist);
2601                         if (retval)
2602                                 goto out;
2603                 } else {
2604                         dest->dblist = src->dblist;
2605                         dest->dblist->fs = dest;
2606                         src->dblist = NULL;
2607                 }
2608         }
2609
2610         if (src->badblocks) {
2611                 if (dest->badblocks == NULL)
2612                         retval = ext2fs_badblocks_copy(src->badblocks,
2613                                                        &dest->badblocks);
2614                 else
2615                         retval = ext2fs_badblocks_merge(src->badblocks,
2616                                                         dest->badblocks);
2617         }
2618 out:
2619         io_channel_close(src->io);
2620         if (src->inode_map)
2621                 ext2fs_free_generic_bmap(src->inode_map);
2622         if (src->block_map)
2623                 ext2fs_free_generic_bmap(src->block_map);
2624         if (src->badblocks)
2625                 ext2fs_badblocks_list_free(src->badblocks);
2626         if (src->dblist)
2627                 ext2fs_free_dblist(src->dblist);
2628
2629         return retval;
2630 }
2631
2632 static void e2fsck_pass1_copy_invalid_bitmaps(e2fsck_t global_ctx,
2633                                               e2fsck_t thread_ctx)
2634 {
2635         dgrp_t i, j;
2636         dgrp_t grp_start = thread_ctx->thread_info.et_group_start;
2637         dgrp_t grp_end = thread_ctx->thread_info.et_group_end;
2638         dgrp_t total = grp_end - grp_start;
2639
2640         thread_ctx->invalid_inode_bitmap_flag =
2641                         e2fsck_allocate_memory(global_ctx, sizeof(int) * total,
2642                                                 "invalid_inode_bitmap");
2643         thread_ctx->invalid_block_bitmap_flag =
2644                         e2fsck_allocate_memory(global_ctx, sizeof(int) * total,
2645                                                "invalid_block_bitmap");
2646         thread_ctx->invalid_inode_table_flag =
2647                         e2fsck_allocate_memory(global_ctx, sizeof(int) * total,
2648                                                "invalid_inode_table");
2649
2650         memcpy(thread_ctx->invalid_block_bitmap_flag,
2651                &global_ctx->invalid_block_bitmap_flag[grp_start],
2652                total * sizeof(int));
2653         memcpy(thread_ctx->invalid_inode_bitmap_flag,
2654                &global_ctx->invalid_inode_bitmap_flag[grp_start],
2655                total * sizeof(int));
2656         memcpy(thread_ctx->invalid_inode_table_flag,
2657                &global_ctx->invalid_inode_table_flag[grp_start],
2658                total * sizeof(int));
2659
2660         thread_ctx->invalid_bitmaps = 0;
2661         for (i = grp_start, j = 0; i < grp_end; i++, j++) {
2662                 if (thread_ctx->invalid_block_bitmap_flag[j])
2663                         thread_ctx->invalid_bitmaps++;
2664                 if (thread_ctx->invalid_inode_bitmap_flag[j])
2665                         thread_ctx->invalid_bitmaps++;
2666                 if (thread_ctx->invalid_inode_table_flag[j])
2667                         thread_ctx->invalid_bitmaps++;
2668         }
2669 }
2670
2671 static void e2fsck_pass1_merge_invalid_bitmaps(e2fsck_t global_ctx,
2672                                                e2fsck_t thread_ctx)
2673 {
2674         dgrp_t i, j;
2675         dgrp_t grp_start = thread_ctx->thread_info.et_group_start;
2676         dgrp_t grp_end = thread_ctx->thread_info.et_group_end;
2677         dgrp_t total = grp_end - grp_start;
2678
2679         memcpy(&global_ctx->invalid_block_bitmap_flag[grp_start],
2680                thread_ctx->invalid_block_bitmap_flag, total * sizeof(int));
2681         memcpy(&global_ctx->invalid_inode_bitmap_flag[grp_start],
2682                thread_ctx->invalid_inode_bitmap_flag, total * sizeof(int));
2683         memcpy(&global_ctx->invalid_inode_table_flag[grp_start],
2684                thread_ctx->invalid_inode_table_flag, total * sizeof(int));
2685         global_ctx->invalid_bitmaps += thread_ctx->invalid_bitmaps;
2686 }
2687
2688 static errcode_t e2fsck_pass1_thread_prepare(e2fsck_t global_ctx, e2fsck_t *thread_ctx,
2689                                              int thread_index, int num_threads,
2690                                              dgrp_t average_group)
2691 {
2692         errcode_t               retval;
2693         e2fsck_t                thread_context;
2694         ext2_filsys             thread_fs;
2695         ext2_filsys             global_fs = global_ctx->fs;
2696         struct e2fsck_thread    *tinfo;
2697
2698         assert(global_ctx->inode_used_map == NULL);
2699         assert(global_ctx->inode_dir_map == NULL);
2700         assert(global_ctx->inode_bb_map == NULL);
2701         assert(global_ctx->inode_imagic_map == NULL);
2702         assert(global_ctx->inode_reg_map == NULL);
2703         assert(global_ctx->inodes_to_rebuild == NULL);
2704
2705         assert(global_ctx->block_found_map != NULL);
2706         assert(global_ctx->block_metadata_map != NULL);
2707         assert(global_ctx->block_dup_map != NULL);
2708         assert(global_ctx->block_ea_map == NULL);
2709         assert(global_ctx->fs->dblist == NULL);
2710
2711         retval = ext2fs_get_mem(sizeof(struct e2fsck_struct), &thread_context);
2712         if (retval) {
2713                 com_err(global_ctx->program_name, retval, "while allocating memory");
2714                 return retval;
2715         }
2716         memcpy(thread_context, global_ctx, sizeof(struct e2fsck_struct));
2717         thread_context->block_dup_map = NULL;
2718
2719         retval = e2fsck_allocate_block_bitmap(global_ctx->fs,
2720                                 _("in-use block map"), EXT2FS_BMAP64_RBTREE,
2721                                 "block_found_map", &thread_context->block_found_map);
2722         if (retval)
2723                 goto out_context;
2724
2725         thread_context->global_ctx = global_ctx;
2726         retval = ext2fs_get_mem(sizeof(struct struct_ext2_filsys), &thread_fs);
2727         if (retval) {
2728                 com_err(global_ctx->program_name, retval, "while allocating memory");
2729                 goto out_context;
2730         }
2731
2732         io_channel_flush_cleanup(global_fs->io);
2733         retval = e2fsck_pass1_copy_fs(thread_fs, global_ctx, global_fs);
2734         if (retval) {
2735                 com_err(global_ctx->program_name, retval, "while copying fs");
2736                 goto out_fs;
2737         }
2738         thread_fs->priv_data = thread_context;
2739
2740         thread_context->thread_info.et_thread_index = thread_index;
2741         set_up_logging(thread_context);
2742
2743         tinfo = &thread_context->thread_info;
2744         tinfo->et_group_start = average_group * thread_index;
2745         if (thread_index == global_fs->fs_num_threads - 1)
2746                 tinfo->et_group_end = thread_fs->group_desc_count;
2747         else
2748                 tinfo->et_group_end = average_group * (thread_index + 1);
2749         tinfo->et_group_next = tinfo->et_group_start;
2750         tinfo->et_inode_number = 0;
2751         tinfo->et_log_buf[0] = '\0';
2752         tinfo->et_log_length = 0;
2753         if (thread_context->options & E2F_OPT_MULTITHREAD)
2754                 log_out(thread_context, _("Scan group range [%d, %d)\n"),
2755                         tinfo->et_group_start, tinfo->et_group_end);
2756         thread_context->fs = thread_fs;
2757         retval = quota_init_context(&thread_context->qctx, thread_fs, 0);
2758         if (retval) {
2759                 com_err(global_ctx->program_name, retval,
2760                         "while init quota context");
2761                 goto out_fs;
2762         }
2763         *thread_ctx = thread_context;
2764         e2fsck_pass1_copy_invalid_bitmaps(global_ctx, thread_context);
2765         return 0;
2766 out_fs:
2767         ext2fs_free_mem(&thread_fs);
2768 out_context:
2769         if (thread_context->block_found_map)
2770                 ext2fs_free_mem(&thread_context->block_found_map);
2771         ext2fs_free_mem(&thread_context);
2772         return retval;
2773 }
2774
2775 static void e2fsck_pass1_merge_dir_info(e2fsck_t global_ctx, e2fsck_t thread_ctx)
2776 {
2777         if (thread_ctx->dir_info == NULL)
2778                 return;
2779
2780         if (global_ctx->dir_info == NULL) {
2781                 global_ctx->dir_info = thread_ctx->dir_info;
2782                 thread_ctx->dir_info = NULL;
2783                 return;
2784         }
2785
2786         e2fsck_merge_dir_info(global_ctx, thread_ctx->dir_info,
2787                               global_ctx->dir_info);
2788 }
2789
2790 static void e2fsck_pass1_merge_dx_dir(e2fsck_t global_ctx, e2fsck_t thread_ctx)
2791 {
2792         if (thread_ctx->dx_dir_info == NULL)
2793                 return;
2794
2795         if (global_ctx->dx_dir_info == NULL) {
2796                 global_ctx->dx_dir_info = thread_ctx->dx_dir_info;
2797                 global_ctx->dx_dir_info_size = thread_ctx->dx_dir_info_size;
2798                 global_ctx->dx_dir_info_count = thread_ctx->dx_dir_info_count;
2799                 thread_ctx->dx_dir_info = NULL;
2800                 return;
2801         }
2802
2803         e2fsck_merge_dx_dir(global_ctx, thread_ctx);
2804 }
2805
2806 static inline errcode_t
2807 e2fsck_pass1_merge_icount(ext2_icount_t *dest_icount,
2808                           ext2_icount_t *src_icount)
2809 {
2810         if (*src_icount) {
2811                 if (*dest_icount == NULL) {
2812                         *dest_icount = *src_icount;
2813                         *src_icount = NULL;
2814                 } else {
2815                         errcode_t ret;
2816
2817                         ret = ext2fs_icount_merge(*src_icount,
2818                                                   *dest_icount);
2819                         if (ret)
2820                                 return ret;
2821                 }
2822         }
2823
2824         return 0;
2825 }
2826
2827 static errcode_t e2fsck_pass1_merge_icounts(e2fsck_t global_ctx, e2fsck_t thread_ctx)
2828 {
2829         errcode_t ret;
2830
2831         ret = e2fsck_pass1_merge_icount(&global_ctx->inode_count,
2832                                         &thread_ctx->inode_count);
2833         if (ret)
2834                 return ret;
2835         ret = e2fsck_pass1_merge_icount(&global_ctx->inode_link_info,
2836                                         &thread_ctx->inode_link_info);
2837
2838         return ret;
2839 }
2840
2841 static errcode_t e2fsck_pass1_merge_dirs_to_hash(e2fsck_t global_ctx,
2842                                                  e2fsck_t thread_ctx)
2843 {
2844         errcode_t retval = 0;
2845
2846         if (!thread_ctx->dirs_to_hash)
2847                 return 0;
2848
2849         if (!global_ctx->dirs_to_hash)
2850                 retval = ext2fs_badblocks_copy(thread_ctx->dirs_to_hash,
2851                                                &global_ctx->dirs_to_hash);
2852         else
2853                 retval = ext2fs_badblocks_merge(thread_ctx->dirs_to_hash,
2854                                                 global_ctx->dirs_to_hash);
2855
2856         return retval;
2857 }
2858
2859 static errcode_t e2fsck_pass1_merge_ea_inode_refs(e2fsck_t global_ctx,
2860                                                   e2fsck_t thread_ctx)
2861 {
2862         ea_value_t count;
2863         blk64_t blk;
2864         errcode_t retval;
2865
2866         if (!thread_ctx->ea_inode_refs)
2867                 return 0;
2868
2869         if (!global_ctx->ea_inode_refs) {
2870                 global_ctx->ea_inode_refs = thread_ctx->ea_inode_refs;
2871                 thread_ctx->ea_inode_refs = NULL;
2872                 return 0;
2873         }
2874
2875         ea_refcount_intr_begin(thread_ctx->ea_inode_refs);
2876         while (1) {
2877                 if ((blk = ea_refcount_intr_next(thread_ctx->ea_inode_refs,
2878                                                  &count)) == 0)
2879                         break;
2880                 if (!global_ctx->block_ea_map ||
2881                     !ext2fs_fast_test_block_bitmap2(global_ctx->block_ea_map,
2882                                                     blk)) {
2883                         retval = ea_refcount_store(global_ctx->ea_inode_refs,
2884                                                    blk, count);
2885                         if (retval)
2886                                 return retval;
2887                 }
2888         }
2889
2890         return retval;
2891 }
2892
2893 static ea_value_t ea_refcount_usage(e2fsck_t ctx, blk64_t blk,
2894                                     ea_value_t *orig)
2895 {
2896         ea_value_t count_cur;
2897         ea_value_t count_extra = 0;
2898         ea_value_t count_orig;
2899
2900         ea_refcount_fetch(ctx->refcount_orig, blk, &count_orig);
2901         ea_refcount_fetch(ctx->refcount, blk, &count_cur);
2902         /* most of time this is not needed */
2903         if (ctx->refcount_extra && count_cur == 0)
2904                 ea_refcount_fetch(ctx->refcount_extra, blk, &count_extra);
2905
2906         if (!count_orig)
2907                 count_orig = *orig;
2908         else if (orig)
2909                 *orig = count_orig;
2910
2911         return count_orig + count_extra - count_cur;
2912 }
2913
2914 static errcode_t e2fsck_pass1_merge_ea_refcount(e2fsck_t global_ctx,
2915                                                 e2fsck_t thread_ctx)
2916 {
2917         ea_value_t count;
2918         blk64_t blk;
2919         errcode_t retval = 0;
2920
2921         if (!thread_ctx->refcount)
2922                 return 0;
2923
2924         if (!global_ctx->refcount) {
2925                 global_ctx->refcount = thread_ctx->refcount;
2926                 thread_ctx->refcount = NULL;
2927                 global_ctx->refcount_extra = thread_ctx->refcount;
2928                 thread_ctx->refcount_extra = NULL;
2929                 return 0;
2930         }
2931
2932         ea_refcount_intr_begin(thread_ctx->refcount);
2933         while (1) {
2934                 if ((blk = ea_refcount_intr_next(thread_ctx->refcount,
2935                                                  &count)) == 0)
2936                         break;
2937                 /**
2938                  * this EA has never seen before, so just store its
2939                  * refcount and refcount_extra into global_ctx if needed.
2940                  */
2941                 if (!global_ctx->block_ea_map ||
2942                     !ext2fs_fast_test_block_bitmap2(global_ctx->block_ea_map,
2943                                                     blk)) {
2944                         ea_value_t extra;
2945
2946                         retval = ea_refcount_store(global_ctx->refcount,
2947                                                    blk, count);
2948                         if (retval)
2949                                 return retval;
2950
2951                         if (count > 0 || !thread_ctx->refcount_extra)
2952                                 continue;
2953                         ea_refcount_fetch(thread_ctx->refcount_extra, blk,
2954                                           &extra);
2955                         if (extra == 0)
2956                                 continue;
2957
2958                         if (!global_ctx->refcount_extra) {
2959                                 retval = ea_refcount_create(0,
2960                                                 &global_ctx->refcount_extra);
2961                                 if (retval)
2962                                         return retval;
2963                         }
2964                         retval = ea_refcount_store(global_ctx->refcount_extra,
2965                                                    blk, extra);
2966                         if (retval)
2967                                 return retval;
2968                 } else {
2969                         ea_value_t orig;
2970                         ea_value_t thread_usage;
2971                         ea_value_t global_usage;
2972                         ea_value_t new;
2973
2974                         thread_usage = ea_refcount_usage(thread_ctx,
2975                                                          blk, &orig);
2976                         global_usage = ea_refcount_usage(global_ctx,
2977                                                          blk, &orig);
2978                         if (thread_usage + global_usage <= orig) {
2979                                 new = orig - thread_usage - global_usage;
2980                                 retval = ea_refcount_store(global_ctx->refcount,
2981                                                            blk, new);
2982                                 if (retval)
2983                                         return retval;
2984                                 continue;
2985                         }
2986                         /* update it is as zero */
2987                         retval = ea_refcount_store(global_ctx->refcount,
2988                                                    blk, 0);
2989                         if (retval)
2990                                 return retval;
2991                         /* Ooops, this EA was referenced more than it stated */
2992                         if (!global_ctx->refcount_extra) {
2993                                 retval = ea_refcount_create(0,
2994                                                 &global_ctx->refcount_extra);
2995                                 if (retval)
2996                                         return retval;
2997                         }
2998                         new = global_usage + thread_usage - orig;
2999                         retval = ea_refcount_store(global_ctx->refcount_extra,
3000                                                    blk, new);
3001                         if (retval)
3002                                 return retval;
3003                 }
3004         }
3005
3006         return retval;
3007 }
3008
3009 static errcode_t e2fsck_pass1_merge_context(e2fsck_t global_ctx,
3010                                             e2fsck_t thread_ctx)
3011 {
3012         ext2_filsys global_fs = global_ctx->fs;
3013         errcode_t retval;
3014         int i;
3015
3016         global_ctx->fs_directory_count += thread_ctx->fs_directory_count;
3017         global_ctx->fs_regular_count += thread_ctx->fs_regular_count;
3018         global_ctx->fs_blockdev_count += thread_ctx->fs_blockdev_count;
3019         global_ctx->fs_chardev_count += thread_ctx->fs_chardev_count;
3020         global_ctx->fs_links_count += thread_ctx->fs_links_count;
3021         global_ctx->fs_symlinks_count += thread_ctx->fs_symlinks_count;
3022         global_ctx->fs_fast_symlinks_count += thread_ctx->fs_fast_symlinks_count;
3023         global_ctx->fs_fifo_count += thread_ctx->fs_fifo_count;
3024         global_ctx->fs_total_count += thread_ctx->fs_total_count;
3025         global_ctx->fs_badblocks_count += thread_ctx->fs_badblocks_count;
3026         global_ctx->fs_sockets_count += thread_ctx->fs_sockets_count;
3027         global_ctx->fs_ind_count += thread_ctx->fs_ind_count;
3028         global_ctx->fs_dind_count += thread_ctx->fs_dind_count;
3029         global_ctx->fs_tind_count += thread_ctx->fs_tind_count;
3030         global_ctx->fs_fragmented += thread_ctx->fs_fragmented;
3031         global_ctx->fs_fragmented_dir += thread_ctx->fs_fragmented_dir;
3032         global_ctx->large_files += thread_ctx->large_files;
3033         /* threads might enable E2F_OPT_YES */
3034         global_ctx->options |= thread_ctx->options;
3035         global_ctx->flags |= thread_ctx->flags;
3036         /*
3037          * The l+f inode may have been cleared, so zap it now and
3038          * later passes will recalculate it if necessary
3039          */
3040         global_ctx->lost_and_found = 0;
3041         /* merge extent depth count */
3042         for (i = 0; i < MAX_EXTENT_DEPTH_COUNT; i++)
3043                 global_ctx->extent_depth_count[i] +=
3044                         thread_ctx->extent_depth_count[i];
3045
3046         e2fsck_pass1_merge_dir_info(global_ctx, thread_ctx);
3047         e2fsck_pass1_merge_dx_dir(global_ctx, thread_ctx);
3048
3049         retval = e2fsck_pass1_merge_fs(global_ctx->fs, thread_ctx->fs);
3050         if (retval) {
3051                 com_err(global_ctx->program_name, 0, _("while merging fs\n"));
3052                 return retval;
3053         }
3054         retval = e2fsck_pass1_merge_icounts(global_ctx, thread_ctx);
3055         if (retval) {
3056                 com_err(global_ctx->program_name, 0,
3057                         _("while merging icounts\n"));
3058                 return retval;
3059         }
3060
3061         retval = e2fsck_pass1_merge_dirs_to_hash(global_ctx, thread_ctx);
3062         if (retval) {
3063                 com_err(global_ctx->program_name, 0,
3064                         _("while merging dirs to hash\n"));
3065                 return retval;
3066         }
3067
3068         e2fsck_pass1_merge_ea_inode_refs(global_ctx, thread_ctx);
3069         e2fsck_pass1_merge_ea_refcount(global_ctx, thread_ctx);
3070         retval = quota_merge_and_update_usage(global_ctx->qctx,
3071                                               thread_ctx->qctx);
3072         if (retval)
3073                 return retval;
3074
3075         e2fsck_pass1_merge_invalid_bitmaps(global_ctx, thread_ctx);
3076
3077         retval = e2fsck_pass1_merge_bitmap(global_fs,
3078                                 &thread_ctx->inode_used_map,
3079                                 &global_ctx->inode_used_map);
3080         if (retval)
3081                 return retval;
3082
3083         retval = e2fsck_pass1_merge_bitmap(global_fs,
3084                                 &thread_ctx->inode_bad_map,
3085                                 &global_ctx->inode_bad_map);
3086         if (retval)
3087                 return retval;
3088         retval = e2fsck_pass1_merge_bitmap(global_fs,
3089                                         &thread_ctx->inode_dir_map,
3090                                         &global_ctx->inode_dir_map);
3091         if (retval)
3092                 return retval;
3093         retval = e2fsck_pass1_merge_bitmap(global_fs,
3094                                 &thread_ctx->inode_bb_map,
3095                                 &global_ctx->inode_bb_map);
3096         if (retval)
3097                 return retval;
3098         retval = e2fsck_pass1_merge_bitmap(global_fs,
3099                                 &thread_ctx->inode_imagic_map,
3100                                 &global_ctx->inode_imagic_map);
3101         if (retval)
3102                 return retval;
3103         retval = e2fsck_pass1_merge_bitmap(global_fs,
3104                                 &thread_ctx->inode_reg_map,
3105                                 &global_ctx->inode_reg_map);
3106         if (retval)
3107                 return retval;
3108         retval = e2fsck_pass1_merge_bitmap(global_fs,
3109                                 &thread_ctx->inodes_to_rebuild,
3110                                 &global_ctx->inodes_to_rebuild);
3111         if (retval)
3112                 return retval;
3113         retval = e2fsck_pass1_merge_bitmap(global_fs,
3114                                 &thread_ctx->block_ea_map,
3115                                 &global_ctx->block_ea_map);
3116         if (retval)
3117                 return retval;
3118
3119         if (ext2fs_has_feature_shared_blocks(global_fs->super) &&
3120             !(global_ctx->options & E2F_OPT_UNSHARE_BLOCKS))
3121                 return 0;
3122         /*
3123          * This need be done after merging block_ea_map
3124          * because ea block might be shared, we need exclude
3125          * them from dup blocks.
3126          */
3127         e2fsck_pass1_block_map_w_lock(thread_ctx);
3128         retval = ext2fs_merge_bitmap(thread_ctx->block_found_map,
3129                                      global_ctx->block_found_map,
3130                                      global_ctx->block_dup_map,
3131                                      global_ctx->block_ea_map);
3132         e2fsck_pass1_block_map_w_unlock(thread_ctx);
3133         if (retval == EEXIST)
3134                 global_ctx->flags |= E2F_FLAG_DUP_BLOCK;
3135
3136         return 0;
3137 }
3138
3139 static int e2fsck_pass1_thread_join(e2fsck_t global_ctx, e2fsck_t thread_ctx)
3140 {
3141         errcode_t       retval;
3142
3143         retval = e2fsck_pass1_merge_context(global_ctx, thread_ctx);
3144         ext2fs_free_mem(&thread_ctx->fs);
3145         if (thread_ctx->logf)
3146                 fclose(thread_ctx->logf);
3147         if (thread_ctx->problem_logf) {
3148                 fputs("</problem_log>\n", thread_ctx->problem_logf);
3149                 fclose(thread_ctx->problem_logf);
3150         }
3151
3152         quota_release_context(&thread_ctx->qctx);
3153         /*
3154          * @block_metadata_map and @block_dup_map are
3155          * shared, so we don't free them.
3156          */
3157         thread_ctx->block_metadata_map = NULL;
3158         thread_ctx->block_dup_map = NULL;
3159         e2fsck_reset_context(thread_ctx);
3160         ext2fs_free_mem(&thread_ctx);
3161
3162         return retval;
3163 }
3164
3165 static int e2fsck_pass1_threads_join(struct e2fsck_thread_info *infos,
3166                                      e2fsck_t global_ctx)
3167 {
3168         errcode_t rc;
3169         errcode_t ret = 0;
3170         struct e2fsck_thread_info *pinfo;
3171         int num_threads = global_ctx->pfs_num_threads;
3172         int i;
3173
3174         /* merge invalid bitmaps will recalculate it */
3175         global_ctx->invalid_bitmaps = 0;
3176         for (i = 0; i < num_threads; i++) {
3177                 pinfo = &infos[i];
3178
3179                 if (!pinfo->eti_started)
3180                         continue;
3181
3182                 rc = pthread_join(pinfo->eti_thread_id, NULL);
3183                 if (rc) {
3184                         com_err(global_ctx->program_name, rc,
3185                                 _("while joining thread\n"));
3186                         if (ret == 0)
3187                                 ret = rc;
3188                 }
3189                 rc = e2fsck_pass1_thread_join(global_ctx, infos[i].eti_thread_ctx);
3190                 if (rc) {
3191                         com_err(global_ctx->program_name, rc,
3192                                 _("while joining pass1 thread\n"));
3193                         if (ret == 0)
3194                                 ret = rc;
3195                 }
3196         }
3197         free(infos);
3198
3199         return ret;
3200 }
3201
3202 static void *e2fsck_pass1_thread(void *arg)
3203 {
3204         struct e2fsck_thread_info       *info = arg;
3205         e2fsck_t                         thread_ctx = info->eti_thread_ctx;
3206 #ifdef DEBUG_THREADS
3207         struct e2fsck_thread_debug      *thread_debug = info->eti_debug;
3208 #endif
3209
3210 #ifdef DEBUG_THREADS
3211         pthread_mutex_lock(&thread_debug->etd_mutex);
3212         while (info->eti_thread_index > thread_debug->etd_finished_threads) {
3213                 pthread_cond_wait(&thread_debug->etd_cond,
3214                                   &thread_debug->etd_mutex);
3215         }
3216         pthread_mutex_unlock(&thread_debug->etd_mutex);
3217 #endif
3218
3219 #ifdef HAVE_SETJMP_H
3220         /*
3221          * When fatal_error() happens, jump to here. The thread
3222          * context's flags will be saved, but its abort_loc will
3223          * be overwritten by original jump buffer for the later
3224          * tests.
3225          */
3226         if (setjmp(thread_ctx->abort_loc)) {
3227                 thread_ctx->flags &= ~E2F_FLAG_SETJMP_OK;
3228                 goto out;
3229         }
3230         thread_ctx->flags |= E2F_FLAG_SETJMP_OK;
3231 #endif
3232
3233         e2fsck_pass1_run(thread_ctx);
3234
3235 out:
3236         if (thread_ctx->options & E2F_OPT_MULTITHREAD)
3237                 log_out(thread_ctx,
3238                         _("Scanned group range [%u, %u), inodes %u\n"),
3239                         thread_ctx->thread_info.et_group_start,
3240                         thread_ctx->thread_info.et_group_end,
3241                         thread_ctx->thread_info.et_inode_number);
3242
3243 #ifdef DEBUG_THREADS
3244         pthread_mutex_lock(&thread_debug->etd_mutex);
3245         thread_debug->etd_finished_threads++;
3246         pthread_cond_broadcast(&thread_debug->etd_cond);
3247         pthread_mutex_unlock(&thread_debug->etd_mutex);
3248 #endif
3249
3250         return NULL;
3251 }
3252
3253 static int e2fsck_pass1_threads_start(struct e2fsck_thread_info **pinfo,
3254                                       e2fsck_t global_ctx)
3255 {
3256         struct e2fsck_thread_info       *infos;
3257         pthread_attr_t                   attr;
3258         errcode_t                        retval;
3259         errcode_t                        ret;
3260         struct e2fsck_thread_info       *tmp_pinfo;
3261         int                              i;
3262         e2fsck_t                         thread_ctx;
3263         dgrp_t                           average_group;
3264         int num_threads = global_ctx->pfs_num_threads;
3265 #ifdef DEBUG_THREADS
3266         struct e2fsck_thread_debug       thread_debug =
3267                 {PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0};
3268
3269         thread_debug.etd_finished_threads = 0;
3270 #endif
3271
3272         retval = pthread_attr_init(&attr);
3273         if (retval) {
3274                 com_err(global_ctx->program_name, retval,
3275                         _("while setting pthread attribute\n"));
3276                 return retval;
3277         }
3278
3279         infos = calloc(num_threads, sizeof(struct e2fsck_thread_info));
3280         if (infos == NULL) {
3281                 retval = -ENOMEM;
3282                 com_err(global_ctx->program_name, retval,
3283                         _("while allocating memory for threads\n"));
3284                 pthread_attr_destroy(&attr);
3285                 return retval;
3286         }
3287
3288         average_group = ext2fs_get_avg_group(global_ctx->fs);
3289         for (i = 0; i < num_threads; i++) {
3290                 tmp_pinfo = &infos[i];
3291                 tmp_pinfo->eti_thread_index = i;
3292 #ifdef DEBUG_THREADS
3293                 tmp_pinfo->eti_debug = &thread_debug;
3294 #endif
3295                 retval = e2fsck_pass1_thread_prepare(global_ctx, &thread_ctx,
3296                                                      i, num_threads,
3297                                                      average_group);
3298                 if (retval) {
3299                         com_err(global_ctx->program_name, retval,
3300                                 _("while preparing pass1 thread\n"));
3301                         break;
3302                 }
3303                 tmp_pinfo->eti_thread_ctx = thread_ctx;
3304
3305                 retval = pthread_create(&tmp_pinfo->eti_thread_id, &attr,
3306                                         &e2fsck_pass1_thread, tmp_pinfo);
3307                 if (retval) {
3308                         com_err(global_ctx->program_name, retval,
3309                                 _("while creating thread\n"));
3310                         e2fsck_pass1_thread_join(global_ctx, thread_ctx);
3311                         break;
3312                 }
3313
3314                 tmp_pinfo->eti_started = 1;
3315         }
3316
3317         /* destroy the thread attribute object, since it is no longer needed */
3318         ret = pthread_attr_destroy(&attr);
3319         if (ret) {
3320                 com_err(global_ctx->program_name, ret,
3321                         _("while destroying thread attribute\n"));
3322                 if (retval == 0)
3323                         retval = ret;
3324         }
3325
3326         if (retval) {
3327                 e2fsck_pass1_threads_join(infos, global_ctx);
3328                 return retval;
3329         }
3330         *pinfo = infos;
3331         return 0;
3332 }
3333
3334 static void e2fsck_pass1_multithread(e2fsck_t global_ctx)
3335 {
3336         struct e2fsck_thread_info *infos = NULL;
3337         errcode_t retval;
3338
3339         retval = e2fsck_pass1_threads_start(&infos, global_ctx);
3340         if (retval) {
3341                 com_err(global_ctx->program_name, retval,
3342                         _("while starting pass1 threads\n"));
3343                 goto out_abort;
3344         }
3345
3346         retval = e2fsck_pass1_threads_join(infos, global_ctx);
3347         if (retval) {
3348                 com_err(global_ctx->program_name, retval,
3349                         _("while joining pass1 threads\n"));
3350                 goto out_abort;
3351         }
3352         return;
3353 out_abort:
3354         global_ctx->flags |= E2F_FLAG_ABORT;
3355         return;
3356 }
3357 #endif
3358
3359 void e2fsck_pass1(e2fsck_t ctx)
3360 {
3361         errcode_t retval;
3362         int need_single = 1;
3363
3364         retval = e2fsck_pass1_prepare(ctx);
3365         if (retval)
3366                 return;
3367 #ifdef HAVE_PTHREAD
3368         if (ctx->pfs_num_threads > 1 || ctx->options & E2F_OPT_MULTITHREAD) {
3369                 need_single = 0;
3370                 e2fsck_pass1_multithread(ctx);
3371         }
3372         /* No lock is needed at this time */
3373         ctx->fs_need_locking = 0;
3374 #endif
3375         if (need_single)
3376                 e2fsck_pass1_run(ctx);
3377         e2fsck_pass1_post(ctx);
3378 }
3379
3380 #undef FINISH_INODE_LOOP
3381
3382 /*
3383  * When the inode_scan routines call this callback at the end of the
3384  * glock group, call process_inodes.
3385  */
3386 static errcode_t scan_callback(ext2_filsys fs,
3387                                ext2_inode_scan scan EXT2FS_ATTR((unused)),
3388                                dgrp_t group, void * priv_data)
3389 {
3390         struct scan_callback_struct *scan_struct;
3391         e2fsck_t ctx;
3392         struct e2fsck_thread *tinfo;
3393
3394         scan_struct = (struct scan_callback_struct *) priv_data;
3395         ctx = scan_struct->ctx;
3396
3397         process_inodes((e2fsck_t) fs->priv_data, scan_struct->block_buf,
3398                        scan_struct->inodes_to_process,
3399                        scan_struct->process_inode_count);
3400
3401         if (ctx->progress)
3402                 if ((ctx->progress)(ctx, 1, group+1,
3403                                     ctx->fs->group_desc_count))
3404                         return EXT2_ET_CANCEL_REQUESTED;
3405
3406 #ifdef HAVE_PTHREAD
3407         if (ctx->global_ctx) {
3408                 tinfo = &ctx->thread_info;
3409                 tinfo->et_group_next++;
3410                 if (ctx->options & E2F_OPT_DEBUG &&
3411                     ctx->options & E2F_OPT_MULTITHREAD)
3412                         log_out(ctx, _("group %d finished\n"),
3413                                 tinfo->et_group_next);
3414                 if (tinfo->et_group_next >= tinfo->et_group_end)
3415                         return EXT2_ET_SCAN_FINISHED;
3416         }
3417 #endif
3418
3419         return 0;
3420 }
3421
3422 /*
3423  * Process the inodes in the "inodes to process" list.
3424  */
3425 static void process_inodes(e2fsck_t ctx, char *block_buf,
3426                            struct process_inode_block *inodes_to_process,
3427                            int *process_inode_count)
3428 {
3429         int                     i;
3430         struct ext2_inode       *old_stashed_inode;
3431         ext2_ino_t              old_stashed_ino;
3432         const char              *old_operation;
3433         char                    buf[80];
3434         struct problem_context  pctx;
3435
3436 #if 0
3437         printf("begin process_inodes: ");
3438 #endif
3439         if (*process_inode_count == 0)
3440                 return;
3441         old_operation = ehandler_operation(0);
3442         old_stashed_inode = ctx->stashed_inode;
3443         old_stashed_ino = ctx->stashed_ino;
3444         qsort(inodes_to_process, *process_inode_count,
3445                       sizeof(struct process_inode_block), process_inode_cmp);
3446         clear_problem_context(&pctx);
3447         for (i=0; i < *process_inode_count; i++) {
3448                 pctx.inode = ctx->stashed_inode =
3449                         (struct ext2_inode *) &inodes_to_process[i].inode;
3450                 pctx.ino = ctx->stashed_ino = inodes_to_process[i].ino;
3451
3452 #if 0
3453                 printf("%u ", pctx.ino);
3454 #endif
3455                 sprintf(buf, _("reading indirect blocks of inode %u"),
3456                         pctx.ino);
3457                 ehandler_operation(buf);
3458                 check_blocks(ctx, &pctx, block_buf,
3459                              &inodes_to_process[i].ea_ibody_quota);
3460                 if (e2fsck_should_abort(ctx))
3461                         break;
3462         }
3463         ctx->stashed_inode = old_stashed_inode;
3464         ctx->stashed_ino = old_stashed_ino;
3465         *process_inode_count = 0;
3466 #if 0
3467         printf("end process inodes\n");
3468 #endif
3469         ehandler_operation(old_operation);
3470 }
3471
3472 static EXT2_QSORT_TYPE process_inode_cmp(const void *a, const void *b)
3473 {
3474         const struct process_inode_block *ib_a =
3475                 (const struct process_inode_block *) a;
3476         const struct process_inode_block *ib_b =
3477                 (const struct process_inode_block *) b;
3478         int     ret;
3479
3480         ret = (ib_a->inode.i_block[EXT2_IND_BLOCK] -
3481                ib_b->inode.i_block[EXT2_IND_BLOCK]);
3482         if (ret == 0)
3483                 /*
3484                  * We only call process_inodes() for non-extent
3485                  * inodes, so it's OK to pass NULL to
3486                  * ext2fs_file_acl_block() here.
3487                  */
3488                 ret = ext2fs_file_acl_block(0, ext2fs_const_inode(&ib_a->inode)) -
3489                         ext2fs_file_acl_block(0, ext2fs_const_inode(&ib_b->inode));
3490         if (ret == 0)
3491                 ret = ib_a->ino - ib_b->ino;
3492         return ret;
3493 }
3494
3495 /*
3496  * Mark an inode as being bad in some what
3497  */
3498 static void mark_inode_bad(e2fsck_t ctx, ino_t ino)
3499 {
3500         struct          problem_context pctx;
3501
3502         if (!ctx->inode_bad_map) {
3503                 clear_problem_context(&pctx);
3504
3505                 pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
3506                                 _("bad inode map"), EXT2FS_BMAP64_RBTREE,
3507                                 "inode_bad_map", &ctx->inode_bad_map);
3508                 if (pctx.errcode) {
3509                         pctx.num = 3;
3510                         fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
3511                         /* Should never get here */
3512                         ctx->flags |= E2F_FLAG_ABORT;
3513                         return;
3514                 }
3515         }
3516         ext2fs_mark_inode_bitmap2(ctx->inode_bad_map, ino);
3517 }
3518
3519 static void add_casefolded_dir(e2fsck_t ctx, ino_t ino)
3520 {
3521         struct          problem_context pctx;
3522
3523         if (!ctx->casefolded_dirs) {
3524                 pctx.errcode = ext2fs_u32_list_create(&ctx->casefolded_dirs, 0);
3525                 if (pctx.errcode)
3526                         goto error;
3527         }
3528         pctx.errcode = ext2fs_u32_list_add(ctx->casefolded_dirs, ino);
3529         if (pctx.errcode == 0)
3530                 return;
3531 error:
3532         fix_problem(ctx, PR_1_ALLOCATE_CASEFOLDED_DIRLIST, &pctx);
3533         /* Should never get here */
3534         ctx->flags |= E2F_FLAG_ABORT;
3535 }
3536
3537 /*
3538  * This procedure will allocate the inode "bb" (badblock) map table
3539  */
3540 static void alloc_bb_map(e2fsck_t ctx)
3541 {
3542         struct          problem_context pctx;
3543
3544         clear_problem_context(&pctx);
3545         pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
3546                         _("inode in bad block map"), EXT2FS_BMAP64_RBTREE,
3547                         "inode_bb_map", &ctx->inode_bb_map);
3548         if (pctx.errcode) {
3549                 pctx.num = 4;
3550                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
3551                 /* Should never get here */
3552                 ctx->flags |= E2F_FLAG_ABORT;
3553                 return;
3554         }
3555 }
3556
3557 /*
3558  * This procedure will allocate the inode imagic table
3559  */
3560 static void alloc_imagic_map(e2fsck_t ctx)
3561 {
3562         struct          problem_context pctx;
3563
3564         clear_problem_context(&pctx);
3565         pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
3566                         _("imagic inode map"), EXT2FS_BMAP64_RBTREE,
3567                         "inode_imagic_map", &ctx->inode_imagic_map);
3568         if (pctx.errcode) {
3569                 pctx.num = 5;
3570                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
3571                 /* Should never get here */
3572                 ctx->flags |= E2F_FLAG_ABORT;
3573                 return;
3574         }
3575 }
3576
3577 /*
3578  * Marks a block as in use, setting the dup_map if it's been set
3579  * already.  Called by process_block and process_bad_block.
3580  *
3581  * WARNING: Assumes checks have already been done to make sure block
3582  * is valid.  This is true in both process_block and process_bad_block.
3583  */
3584 static _INLINE_ void mark_block_used(e2fsck_t ctx, blk64_t block)
3585 {
3586         struct problem_context pctx;
3587         e2fsck_t global_ctx = ctx->global_ctx ? ctx->global_ctx : ctx;
3588
3589         clear_problem_context(&pctx);
3590
3591         if (is_blocks_used(ctx, block, 1)) {
3592                 if (ext2fs_has_feature_shared_blocks(ctx->fs->super) &&
3593                     !(ctx->options & E2F_OPT_UNSHARE_BLOCKS)) {
3594                         return;
3595                 }
3596                 ctx->flags |= E2F_FLAG_DUP_BLOCK;
3597                 e2fsck_pass1_block_map_w_lock(ctx);
3598                 ext2fs_fast_mark_block_bitmap2(global_ctx->block_dup_map, block);
3599                 e2fsck_pass1_block_map_w_unlock(ctx);
3600         } else {
3601                 ext2fs_fast_mark_block_bitmap2(ctx->block_found_map, block);
3602         }
3603 }
3604
3605 /*
3606  * When cluster size is greater than one block, it is caller's responsibility
3607  * to make sure block parameter starts at a cluster boundary.
3608  */
3609 static _INLINE_ void mark_blocks_used(e2fsck_t ctx, blk64_t block,
3610                                       unsigned int num)
3611 {
3612         if (!is_blocks_used(ctx, block, num)) {
3613                 ext2fs_mark_block_bitmap_range2(ctx->block_found_map, block, num);
3614         } else {
3615                 unsigned int i;
3616
3617                 for (i = 0; i < num; i += EXT2FS_CLUSTER_RATIO(ctx->fs))
3618                         mark_block_used(ctx, block + i);
3619         }
3620 }
3621
3622 static errcode_t _INLINE_ e2fsck_write_ext_attr3(e2fsck_t ctx, blk64_t block,
3623                                                  void *inbuf, ext2_ino_t inum)
3624 {
3625         errcode_t retval;
3626         ext2_filsys fs = ctx->fs;
3627
3628         e2fsck_pass1_fix_lock(ctx);
3629         retval = ext2fs_write_ext_attr3(fs, block, inbuf, inum);
3630         e2fsck_pass1_fix_unlock(ctx);
3631
3632         return retval;
3633 }
3634 /*
3635  * Adjust the extended attribute block's reference counts at the end
3636  * of pass 1, either by subtracting out references for EA blocks that
3637  * are still referenced in ctx->refcount, or by adding references for
3638  * EA blocks that had extra references as accounted for in
3639  * ctx->refcount_extra.
3640  */
3641 static void adjust_extattr_refcount(e2fsck_t ctx, ext2_refcount_t refcount,
3642                                     char *block_buf, int adjust_sign)
3643 {
3644         struct ext2_ext_attr_header     *header;
3645         struct problem_context          pctx;
3646         ext2_filsys                     fs = ctx->fs;
3647         blk64_t                         blk;
3648         __u32                           should_be;
3649         ea_value_t                      count;
3650
3651         clear_problem_context(&pctx);
3652
3653         ea_refcount_intr_begin(refcount);
3654         while (1) {
3655                 if ((blk = ea_refcount_intr_next(refcount, &count)) == 0)
3656                         break;
3657                 pctx.blk = blk;
3658                 pctx.errcode = ext2fs_read_ext_attr3(fs, blk, block_buf,
3659                                                      pctx.ino);
3660                 if (pctx.errcode) {
3661                         fix_problem(ctx, PR_1_EXTATTR_READ_ABORT, &pctx);
3662                         return;
3663                 }
3664                 header = (struct ext2_ext_attr_header *) block_buf;
3665                 pctx.blkcount = header->h_refcount;
3666                 should_be = header->h_refcount + adjust_sign * (int)count;
3667                 pctx.num = should_be;
3668                 if (fix_problem(ctx, PR_1_EXTATTR_REFCOUNT, &pctx)) {
3669                         header->h_refcount = should_be;
3670                         pctx.errcode = e2fsck_write_ext_attr3(ctx, blk,
3671                                                              block_buf,
3672                                                              pctx.ino);
3673                         if (pctx.errcode) {
3674                                 fix_problem(ctx, PR_1_EXTATTR_WRITE_ABORT,
3675                                             &pctx);
3676                                 continue;
3677                         }
3678                 }
3679         }
3680 }
3681
3682 /*
3683  * Handle processing the extended attribute blocks
3684  */
3685 static int check_ext_attr(e2fsck_t ctx, struct problem_context *pctx,
3686                            char *block_buf, struct ea_quota *ea_block_quota)
3687 {
3688         ext2_filsys fs = ctx->fs;
3689         ext2_ino_t      ino = pctx->ino;
3690         struct ext2_inode *inode = pctx->inode;
3691         blk64_t         blk;
3692         char *          end;
3693         struct ext2_ext_attr_header *header;
3694         struct ext2_ext_attr_entry *first, *entry;
3695         blk64_t         quota_blocks = EXT2FS_C2B(fs, 1);
3696         __u64           quota_inodes = 0;
3697         region_t        region = 0;
3698         int             failed_csum = 0;
3699
3700         ea_block_quota->blocks = 0;
3701         ea_block_quota->inodes = 0;
3702
3703         blk = ext2fs_file_acl_block(fs, inode);
3704         if (blk == 0)
3705                 return 0;
3706
3707         /*
3708          * If the Extended attribute flag isn't set, then a non-zero
3709          * file acl means that the inode is corrupted.
3710          *
3711          * Or if the extended attribute block is an invalid block,
3712          * then the inode is also corrupted.
3713          */
3714         if (!ext2fs_has_feature_xattr(fs->super) ||
3715             (blk < fs->super->s_first_data_block) ||
3716             (blk >= ext2fs_blocks_count(fs->super))) {
3717                 mark_inode_bad(ctx, ino);
3718                 return 0;
3719         }
3720
3721         /* If ea bitmap hasn't been allocated, create it */
3722         if (!ctx->block_ea_map) {
3723                 pctx->errcode = e2fsck_allocate_block_bitmap(fs,
3724                                         _("ext attr block map"),
3725                                         EXT2FS_BMAP64_RBTREE, "block_ea_map",
3726                                         &ctx->block_ea_map);
3727                 if (pctx->errcode) {
3728                         pctx->num = 2;
3729                         fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, pctx);
3730                         ctx->flags |= E2F_FLAG_ABORT;
3731                         return 0;
3732                 }
3733         }
3734
3735         /* Create the EA refcount structure if necessary */
3736         if (!ctx->refcount) {
3737                 pctx->errcode = ea_refcount_create(0,
3738                                         &ctx->refcount_orig);
3739                 if (pctx->errcode) {
3740                         pctx->num = 1;
3741                         fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
3742                         ctx->flags |= E2F_FLAG_ABORT;
3743                         return 0;
3744                 }
3745
3746                 pctx->errcode = ea_refcount_create(0, &ctx->refcount);
3747                 if (pctx->errcode) {
3748                         pctx->num = 1;
3749                         fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
3750                         ctx->flags |= E2F_FLAG_ABORT;
3751                         return 0;
3752                 }
3753         }
3754
3755 #if 0
3756         /* Debugging text */
3757         printf("Inode %u has EA block %u\n", ino, blk);
3758 #endif
3759
3760         /* Have we seen this EA block before? */
3761         if (ext2fs_fast_test_block_bitmap2(ctx->block_ea_map, blk)) {
3762                 ea_block_quota->blocks = EXT2FS_C2B(fs, 1);
3763                 ea_block_quota->inodes = 0;
3764
3765                 if (ctx->ea_block_quota_blocks) {
3766                         ea_refcount_fetch(ctx->ea_block_quota_blocks, blk,
3767                                           &quota_blocks);
3768                         if (quota_blocks)
3769                                 ea_block_quota->blocks = quota_blocks;
3770                 }
3771
3772                 if (ctx->ea_block_quota_inodes)
3773                         ea_refcount_fetch(ctx->ea_block_quota_inodes, blk,
3774                                           &ea_block_quota->inodes);
3775
3776                 if (ea_refcount_decrement(ctx->refcount, blk, 0) == 0)
3777                         return 1;
3778                 /* Ooops, this EA was referenced more than it stated */
3779                 if (!ctx->refcount_extra) {
3780                         pctx->errcode = ea_refcount_create(0,
3781                                            &ctx->refcount_extra);
3782                         if (pctx->errcode) {
3783                                 pctx->num = 2;
3784                                 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
3785                                 ctx->flags |= E2F_FLAG_ABORT;
3786                                 return 0;
3787                         }
3788                 }
3789                 ea_refcount_increment(ctx->refcount_extra, blk, 0);
3790                 return 1;
3791         }
3792
3793         /*
3794          * OK, we haven't seen this EA block yet.  So we need to
3795          * validate it
3796          */
3797         pctx->blk = blk;
3798         pctx->errcode = ext2fs_read_ext_attr3(fs, blk, block_buf, pctx->ino);
3799         if (pctx->errcode == EXT2_ET_EXT_ATTR_CSUM_INVALID) {
3800                 pctx->errcode = 0;
3801                 failed_csum = 1;
3802         } else if (pctx->errcode == EXT2_ET_BAD_EA_HEADER)
3803                 pctx->errcode = 0;
3804
3805         if (pctx->errcode &&
3806             fix_problem(ctx, PR_1_READ_EA_BLOCK, pctx)) {
3807                 pctx->errcode = 0;
3808                 goto clear_extattr;
3809         }
3810         header = (struct ext2_ext_attr_header *) block_buf;
3811         pctx->blk = ext2fs_file_acl_block(fs, inode);
3812         if (((ctx->ext_attr_ver == 1) &&
3813              (header->h_magic != EXT2_EXT_ATTR_MAGIC_v1)) ||
3814             ((ctx->ext_attr_ver == 2) &&
3815              (header->h_magic != EXT2_EXT_ATTR_MAGIC))) {
3816                 if (fix_problem(ctx, PR_1_BAD_EA_BLOCK, pctx))
3817                         goto clear_extattr;
3818         }
3819
3820         if (header->h_blocks != 1) {
3821                 if (fix_problem(ctx, PR_1_EA_MULTI_BLOCK, pctx))
3822                         goto clear_extattr;
3823         }
3824
3825         if (pctx->errcode && fix_problem(ctx, PR_1_READ_EA_BLOCK, pctx))
3826                 goto clear_extattr;
3827
3828         region = region_create(0, fs->blocksize);
3829         if (!region) {
3830                 fix_problem(ctx, PR_1_EA_ALLOC_REGION_ABORT, pctx);
3831                 ctx->flags |= E2F_FLAG_ABORT;
3832                 return 0;
3833         }
3834         if (region_allocate(region, 0, sizeof(struct ext2_ext_attr_header))) {
3835                 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
3836                         goto clear_extattr;
3837         }
3838
3839         first = (struct ext2_ext_attr_entry *)(header+1);
3840         end = block_buf + fs->blocksize;
3841         entry = first;
3842         while ((char *)entry < end && *(__u32 *)entry) {
3843                 __u32 hash;
3844
3845                 if (region_allocate(region, (char *)entry - (char *)header,
3846                                    EXT2_EXT_ATTR_LEN(entry->e_name_len))) {
3847                         if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
3848                                 goto clear_extattr;
3849                         break;
3850                 }
3851                 if ((ctx->ext_attr_ver == 1 &&
3852                      (entry->e_name_len == 0 || entry->e_name_index != 0)) ||
3853                     (ctx->ext_attr_ver == 2 &&
3854                      entry->e_name_index == 0)) {
3855                         if (fix_problem(ctx, PR_1_EA_BAD_NAME, pctx))
3856                                 goto clear_extattr;
3857                         break;
3858                 }
3859                 if (entry->e_value_inum == 0) {
3860                         if (entry->e_value_offs + entry->e_value_size >
3861                             fs->blocksize) {
3862                                 if (fix_problem(ctx, PR_1_EA_BAD_VALUE, pctx))
3863                                         goto clear_extattr;
3864                                 break;
3865                         }
3866                         if (entry->e_value_size &&
3867                             region_allocate(region, entry->e_value_offs,
3868                                             EXT2_EXT_ATTR_SIZE(entry->e_value_size))) {
3869                                 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION,
3870                                                 pctx))
3871                                         goto clear_extattr;
3872                         }
3873
3874                         hash = ext2fs_ext_attr_hash_entry(entry, block_buf +
3875                                                           entry->e_value_offs);
3876
3877                         if (entry->e_hash != hash) {
3878                                 pctx->num = entry->e_hash;
3879                                 if (fix_problem(ctx, PR_1_ATTR_HASH, pctx))
3880                                         goto clear_extattr;
3881                                 entry->e_hash = hash;
3882                         }
3883                 } else {
3884                         problem_t problem;
3885                         blk64_t entry_quota_blocks;
3886
3887                         problem = check_large_ea_inode(ctx, entry, pctx,
3888                                                        &entry_quota_blocks);
3889                         if (problem && fix_problem(ctx, problem, pctx))
3890                                 goto clear_extattr;
3891
3892                         quota_blocks += entry_quota_blocks;
3893                         quota_inodes++;
3894                 }
3895
3896                 entry = EXT2_EXT_ATTR_NEXT(entry);
3897         }
3898         if (region_allocate(region, (char *)entry - (char *)header, 4)) {
3899                 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
3900                         goto clear_extattr;
3901         }
3902         region_free(region);
3903
3904         /*
3905          * We only get here if there was no other errors that were fixed.
3906          * If there was a checksum fail, ask to correct it.
3907          */
3908         if (failed_csum &&
3909             fix_problem(ctx, PR_1_EA_BLOCK_ONLY_CSUM_INVALID, pctx)) {
3910                 pctx->errcode = e2fsck_write_ext_attr3(ctx, blk, block_buf,
3911                                                        pctx->ino);
3912                 if (pctx->errcode)
3913                         return 0;
3914         }
3915
3916         if (quota_blocks != EXT2FS_C2B(fs, 1U)) {
3917                 if (!ctx->ea_block_quota_blocks) {
3918                         pctx->errcode = ea_refcount_create(0,
3919                                                 &ctx->ea_block_quota_blocks);
3920                         if (pctx->errcode) {
3921                                 pctx->num = 3;
3922                                 goto refcount_fail;
3923                         }
3924                 }
3925                 ea_refcount_store(ctx->ea_block_quota_blocks, blk,
3926                                   quota_blocks);
3927         }
3928
3929         if (quota_inodes) {
3930                 if (!ctx->ea_block_quota_inodes) {
3931                         pctx->errcode = ea_refcount_create(0,
3932                                                 &ctx->ea_block_quota_inodes);
3933                         if (pctx->errcode) {
3934                                 pctx->num = 4;
3935 refcount_fail:
3936                                 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
3937                                 ctx->flags |= E2F_FLAG_ABORT;
3938                                 return 0;
3939                         }
3940                 }
3941
3942                 ea_refcount_store(ctx->ea_block_quota_inodes, blk,
3943                                   quota_inodes);
3944         }
3945         ea_block_quota->blocks = quota_blocks;
3946         ea_block_quota->inodes = quota_inodes;
3947
3948         inc_ea_inode_refs(ctx, pctx, first, end);
3949         ea_refcount_store(ctx->refcount, blk, header->h_refcount - 1);
3950         ea_refcount_store(ctx->refcount_orig, blk, header->h_refcount);
3951         /**
3952          * It might be racy that this block has been merged in the
3953          * global found map.
3954          */
3955         if (!is_blocks_used(ctx, blk, 1))
3956                 ext2fs_fast_mark_block_bitmap2(ctx->block_found_map, blk);
3957         ext2fs_fast_mark_block_bitmap2(ctx->block_ea_map, blk);
3958         return 1;
3959
3960 clear_extattr:
3961         if (region)
3962                 region_free(region);
3963         ext2fs_file_acl_block_set(fs, inode, 0);
3964         e2fsck_write_inode(ctx, ino, inode, "check_ext_attr");
3965         return 0;
3966 }
3967
3968 /* Returns 1 if bad htree, 0 if OK */
3969 static int handle_htree(e2fsck_t ctx, struct problem_context *pctx,
3970                         ext2_ino_t ino, struct ext2_inode *inode,
3971                         char *block_buf)
3972 {
3973         struct ext2_dx_root_info        *root;
3974         ext2_filsys                     fs = ctx->fs;
3975         errcode_t                       retval;
3976         blk64_t                         blk;
3977
3978         if ((!LINUX_S_ISDIR(inode->i_mode) &&
3979              fix_problem(ctx, PR_1_HTREE_NODIR, pctx)) ||
3980             (!ext2fs_has_feature_dir_index(fs->super) &&
3981              fix_problem(ctx, PR_1_HTREE_SET, pctx)))
3982                 return 1;
3983
3984         pctx->errcode = ext2fs_bmap2(fs, ino, inode, 0, 0, 0, 0, &blk);
3985
3986         if ((pctx->errcode) ||
3987             (blk == 0) ||
3988             (blk < fs->super->s_first_data_block) ||
3989             (blk >= ext2fs_blocks_count(fs->super))) {
3990                 if (fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
3991                         return 1;
3992                 else
3993                         return 0;
3994         }
3995
3996         retval = io_channel_read_blk64(fs->io, blk, 1, block_buf);
3997         if (retval && fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
3998                 return 1;
3999
4000         /* XXX should check that beginning matches a directory */
4001         root = (struct ext2_dx_root_info *) (block_buf + 24);
4002
4003         if ((root->reserved_zero || root->info_length < 8) &&
4004             fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
4005                 return 1;
4006
4007         pctx->num = root->hash_version;
4008         if ((root->hash_version != EXT2_HASH_LEGACY) &&
4009             (root->hash_version != EXT2_HASH_HALF_MD4) &&
4010             (root->hash_version != EXT2_HASH_TEA) &&
4011             (root->hash_version != EXT2_HASH_SIPHASH) &&
4012             fix_problem(ctx, PR_1_HTREE_HASHV, pctx))
4013                 return 1;
4014
4015         if (ext4_hash_in_dirent(inode)) {
4016                 if (root->hash_version != EXT2_HASH_SIPHASH &&
4017                     fix_problem(ctx, PR_1_HTREE_NEEDS_SIPHASH, pctx))
4018                         return 1;
4019         } else {
4020                 if (root->hash_version == EXT2_HASH_SIPHASH &&
4021                    fix_problem(ctx, PR_1_HTREE_CANNOT_SIPHASH, pctx))
4022                         return 1;
4023         }
4024
4025         if ((root->unused_flags & EXT2_HASH_FLAG_INCOMPAT) &&
4026             fix_problem(ctx, PR_1_HTREE_INCOMPAT, pctx))
4027                 return 1;
4028
4029         pctx->num = root->indirect_levels;
4030         /* if htree level is clearly too high, consider it to be broken */
4031         if (root->indirect_levels > EXT4_HTREE_LEVEL &&
4032             fix_problem(ctx, PR_1_HTREE_DEPTH, pctx))
4033                 return 1;
4034
4035         /* if level is only maybe too high, LARGE_DIR feature could be unset */
4036         if (root->indirect_levels > ext2_dir_htree_level(fs) &&
4037             !ext2fs_has_feature_largedir(fs->super)) {
4038                 int blockbits = EXT2_BLOCK_SIZE_BITS(fs->super) + 10;
4039                 int idx_pb = 1 << (blockbits - 3);
4040
4041                 /* compare inode size/blocks vs. max-sized 2-level htree */
4042                 if (EXT2_I_SIZE(pctx->inode) <
4043                     (idx_pb - 1) * (idx_pb - 2) << blockbits &&
4044                     pctx->inode->i_blocks <
4045                     (idx_pb - 1) * (idx_pb - 2) << (blockbits - 9) &&
4046                     fix_problem(ctx, PR_1_HTREE_DEPTH, pctx))
4047                         return 1;
4048         }
4049
4050         if (root->indirect_levels > EXT4_HTREE_LEVEL_COMPAT ||
4051             ext2fs_needs_large_file_feature(EXT2_I_SIZE(inode)))
4052                 ctx->large_dirs++;
4053
4054         return 0;
4055 }
4056
4057 void e2fsck_clear_inode(e2fsck_t ctx, ext2_ino_t ino,
4058                         struct ext2_inode *inode, int restart_flag,
4059                         const char *source)
4060 {
4061         inode->i_flags = 0;
4062         inode->i_links_count = 0;
4063         ext2fs_icount_store(ctx->inode_link_info, ino, 0);
4064         inode->i_dtime = ctx->now;
4065
4066         /*
4067          * If a special inode has such rotten block mappings that we
4068          * want to clear the whole inode, be sure to actually zap
4069          * the block maps because i_links_count isn't checked for
4070          * special inodes, and we'll end up right back here the next
4071          * time we run fsck.
4072          */
4073         if (ino < EXT2_FIRST_INODE(ctx->fs->super))
4074                 memset(inode->i_block, 0, sizeof(inode->i_block));
4075
4076         ext2fs_unmark_inode_bitmap2(ctx->inode_dir_map, ino);
4077         ext2fs_unmark_inode_bitmap2(ctx->inode_used_map, ino);
4078         if (ctx->inode_reg_map)
4079                 ext2fs_unmark_inode_bitmap2(ctx->inode_reg_map, ino);
4080         if (ctx->inode_bad_map)
4081                 ext2fs_unmark_inode_bitmap2(ctx->inode_bad_map, ino);
4082
4083         /*
4084          * If the inode was partially accounted for before processing
4085          * was aborted, we need to restart the pass 1 scan.
4086          */
4087         ctx->flags |= restart_flag;
4088
4089         if (ino == EXT2_BAD_INO)
4090                 memset(inode, 0, sizeof(struct ext2_inode));
4091
4092         e2fsck_write_inode(ctx, ino, inode, source);
4093 }
4094
4095 /*
4096  * Use the multiple-blocks reclamation code to fix alignment problems in
4097  * a bigalloc filesystem.  We want a logical cluster to map to *only* one
4098  * physical cluster, and we want the block offsets within that cluster to
4099  * line up.
4100  */
4101 static int has_unaligned_cluster_map(e2fsck_t ctx,
4102                                      blk64_t last_pblk, blk64_t last_lblk,
4103                                      blk64_t pblk, blk64_t lblk)
4104 {
4105         blk64_t cluster_mask;
4106
4107         if (!ctx->fs->cluster_ratio_bits)
4108                 return 0;
4109         cluster_mask = EXT2FS_CLUSTER_MASK(ctx->fs);
4110
4111         /*
4112          * If the block in the logical cluster doesn't align with the block in
4113          * the physical cluster...
4114          */
4115         if ((lblk & cluster_mask) != (pblk & cluster_mask))
4116                 return 1;
4117
4118         /*
4119          * If we cross a physical cluster boundary within a logical cluster...
4120          */
4121         if (last_pblk && (lblk & cluster_mask) != 0 &&
4122             EXT2FS_B2C(ctx->fs, lblk) == EXT2FS_B2C(ctx->fs, last_lblk) &&
4123             EXT2FS_B2C(ctx->fs, pblk) != EXT2FS_B2C(ctx->fs, last_pblk))
4124                 return 1;
4125
4126         return 0;
4127 }
4128
4129 static void scan_extent_node(e2fsck_t ctx, struct problem_context *pctx,
4130                              struct process_block_struct *pb,
4131                              blk64_t start_block, blk64_t end_block,
4132                              blk64_t eof_block,
4133                              ext2_extent_handle_t ehandle,
4134                              int try_repairs)
4135 {
4136         struct ext2fs_extent    extent;
4137         blk64_t                 blk, last_lblk;
4138         unsigned int            i, n;
4139         int                     is_dir, is_leaf;
4140         problem_t               problem;
4141         struct ext2_extent_info info;
4142         int                     failed_csum = 0;
4143
4144         if (pctx->errcode == EXT2_ET_EXTENT_CSUM_INVALID)
4145                 failed_csum = 1;
4146
4147         pctx->errcode = ext2fs_extent_get_info(ehandle, &info);
4148         if (pctx->errcode)
4149                 return;
4150         if (!(ctx->options & E2F_OPT_FIXES_ONLY) &&
4151             !pb->eti.force_rebuild) {
4152                 struct extent_tree_level *etl;
4153
4154                 etl = pb->eti.ext_info + info.curr_level;
4155                 etl->num_extents += info.num_entries;
4156                 etl->max_extents += info.max_entries;
4157                 /*
4158                  * Implementation wart: Splitting extent blocks when appending
4159                  * will leave the old block with one free entry.  Therefore
4160                  * unless the node is totally full, pretend that a non-root
4161                  * extent block can hold one fewer entry than it actually does,
4162                  * so that we don't repeatedly rebuild the extent tree.
4163                  */
4164                 if (info.curr_level && info.num_entries < info.max_entries)
4165                         etl->max_extents--;
4166         }
4167
4168         pctx->errcode = ext2fs_extent_get(ehandle, EXT2_EXTENT_FIRST_SIB,
4169                                           &extent);
4170         while ((pctx->errcode == 0 ||
4171                 pctx->errcode == EXT2_ET_EXTENT_CSUM_INVALID) &&
4172                info.num_entries-- > 0) {
4173                 is_leaf = extent.e_flags & EXT2_EXTENT_FLAGS_LEAF;
4174                 is_dir = LINUX_S_ISDIR(pctx->inode->i_mode);
4175                 last_lblk = extent.e_lblk + extent.e_len - 1;
4176
4177                 problem = 0;
4178                 pctx->blk = extent.e_pblk;
4179                 pctx->blk2 = extent.e_lblk;
4180                 pctx->num = extent.e_len;
4181                 pctx->blkcount = extent.e_lblk + extent.e_len;
4182
4183                 if (extent.e_pblk == 0 ||
4184                     extent.e_pblk < ctx->fs->super->s_first_data_block ||
4185                     extent.e_pblk >= ext2fs_blocks_count(ctx->fs->super))
4186                         problem = PR_1_EXTENT_BAD_START_BLK;
4187                 else if (extent.e_lblk < start_block)
4188                         problem = PR_1_OUT_OF_ORDER_EXTENTS;
4189                 else if ((end_block && last_lblk > end_block) &&
4190                          !(last_lblk > eof_block &&
4191                            ((extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT) ||
4192                             (pctx->inode->i_flags & EXT4_VERITY_FL))))
4193                         problem = PR_1_EXTENT_END_OUT_OF_BOUNDS;
4194                 else if (is_leaf && extent.e_len == 0)
4195                         problem = PR_1_EXTENT_LENGTH_ZERO;
4196                 else if (is_leaf &&
4197                          (extent.e_pblk + extent.e_len) >
4198                          ext2fs_blocks_count(ctx->fs->super))
4199                         problem = PR_1_EXTENT_ENDS_BEYOND;
4200                 else if (is_leaf && is_dir && !pctx->inode->i_size_high &&
4201                          !ext2fs_has_feature_largedir(ctx->fs->super) &&
4202                          ((extent.e_lblk + extent.e_len) >
4203                           (1U << (21 - ctx->fs->super->s_log_block_size))))
4204                         problem = PR_1_TOOBIG_DIR;
4205
4206                 if (is_leaf && problem == 0 && extent.e_len > 0) {
4207 #if 0
4208                         printf("extent_region(ino=%u, expect=%llu, "
4209                                "lblk=%llu, len=%u)\n", pb->ino,
4210                                (unsigned long long) pb->next_lblock,
4211                                (unsigned long long) extent.e_lblk,
4212                                extent.e_len);
4213 #endif
4214                         if (extent.e_lblk < pb->next_lblock)
4215                                 problem = PR_1_EXTENT_COLLISION;
4216                         else if (extent.e_lblk + extent.e_len > pb->next_lblock)
4217                                 pb->next_lblock = extent.e_lblk + extent.e_len;
4218                 }
4219
4220                 /*
4221                  * Uninitialized blocks in a directory?  Clear the flag and
4222                  * we'll interpret the blocks later.
4223                  */
4224                 if (try_repairs && is_dir && problem == 0 &&
4225                     (extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT) &&
4226                     fix_problem(ctx, PR_1_UNINIT_DBLOCK, pctx)) {
4227                         e2fsck_pass1_fix_lock(ctx);
4228                         extent.e_flags &= ~EXT2_EXTENT_FLAGS_UNINIT;
4229                         pb->inode_modified = 1;
4230                         pctx->errcode = ext2fs_extent_replace(ehandle, 0,
4231                                                               &extent);
4232                         e2fsck_pass1_fix_unlock(ctx);
4233                         if (pctx->errcode)
4234                                 return;
4235                         failed_csum = 0;
4236                 }
4237 #ifdef CONFIG_DEVELOPER_FEATURES
4238                 if (try_repairs && !is_dir && problem == 0 &&
4239                     (ctx->options & E2F_OPT_CLEAR_UNINIT) &&
4240                     (extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT) &&
4241                     fix_problem(ctx, PR_1_CLEAR_UNINIT_EXTENT, pctx)) {
4242                         extent.e_flags &= ~EXT2_EXTENT_FLAGS_UNINIT;
4243                         pb->inode_modified = 1;
4244                         pctx->errcode = ext2fs_extent_replace(ehandle, 0,
4245                                                               &extent);
4246                         if (pctx->errcode)
4247                                 return;
4248                         failed_csum = 0;
4249                 }
4250 #endif
4251                 if (try_repairs && problem) {
4252 report_problem:
4253                         if (fix_problem(ctx, problem, pctx)) {
4254                                 if (ctx->invalid_bitmaps) {
4255                                         /*
4256                                          * If fsck knows the bitmaps are bad,
4257                                          * skip to the next extent and
4258                                          * try to clear this extent again
4259                                          * after fixing the bitmaps, by
4260                                          * restarting fsck.
4261                                          */
4262                                         pctx->errcode = ext2fs_extent_get(
4263                                                           ehandle,
4264                                                           EXT2_EXTENT_NEXT_SIB,
4265                                                           &extent);
4266                                         ctx->flags |= E2F_FLAG_RESTART_LATER;
4267                                         if (pctx->errcode ==
4268                                                     EXT2_ET_NO_CURRENT_NODE) {
4269                                                 pctx->errcode = 0;
4270                                                 break;
4271                                         }
4272                                         continue;
4273                                 }
4274                                 e2fsck_pass1_fix_lock(ctx);
4275                                 e2fsck_read_bitmaps(ctx);
4276                                 pb->inode_modified = 1;
4277                                 pctx->errcode =
4278                                         ext2fs_extent_delete(ehandle, 0);
4279                                 e2fsck_pass1_fix_unlock(ctx);
4280                                 if (pctx->errcode) {
4281                                         pctx->str = "ext2fs_extent_delete";
4282                                         return;
4283                                 }
4284                                 e2fsck_pass1_fix_lock(ctx);
4285                                 pctx->errcode = ext2fs_extent_fix_parents(ehandle);
4286                                 e2fsck_pass1_fix_unlock(ctx);
4287                                 if (pctx->errcode &&
4288                                     pctx->errcode != EXT2_ET_NO_CURRENT_NODE) {
4289                                         pctx->str = "ext2fs_extent_fix_parents";
4290                                         return;
4291                                 }
4292                                 pctx->errcode = ext2fs_extent_get(ehandle,
4293                                                                   EXT2_EXTENT_CURRENT,
4294                                                                   &extent);
4295                                 if (pctx->errcode == EXT2_ET_NO_CURRENT_NODE) {
4296                                         pctx->errcode = 0;
4297                                         break;
4298                                 }
4299                                 failed_csum = 0;
4300                                 continue;
4301                         }
4302                         goto next;
4303                 }
4304
4305                 if (!is_leaf) {
4306                         blk64_t lblk = extent.e_lblk;
4307                         int next_try_repairs = 1;
4308
4309                         blk = extent.e_pblk;
4310
4311                         /*
4312                          * If this lower extent block collides with critical
4313                          * metadata, don't try to repair the damage.  Pass 1b
4314                          * will reallocate the block; then we can try again.
4315                          */
4316                         if (pb->ino != EXT2_RESIZE_INO &&
4317                             extent.e_pblk < ctx->fs->super->s_blocks_count &&
4318                             ext2fs_test_block_bitmap2(ctx->block_metadata_map,
4319                                                       extent.e_pblk)) {
4320                                 next_try_repairs = 0;
4321                                 pctx->blk = blk;
4322                                 fix_problem(ctx,
4323                                             PR_1_CRITICAL_METADATA_COLLISION,
4324                                             pctx);
4325                                 if ((ctx->options & E2F_OPT_NO) == 0)
4326                                         ctx->flags |= E2F_FLAG_RESTART_LATER;
4327                         }
4328                         pctx->errcode = ext2fs_extent_get(ehandle,
4329                                                   EXT2_EXTENT_DOWN, &extent);
4330                         if (pctx->errcode &&
4331                             pctx->errcode != EXT2_ET_EXTENT_CSUM_INVALID) {
4332                                 pctx->str = "EXT2_EXTENT_DOWN";
4333                                 problem = PR_1_EXTENT_HEADER_INVALID;
4334                                 if (!next_try_repairs)
4335                                         return;
4336                                 if (pctx->errcode == EXT2_ET_EXTENT_HEADER_BAD)
4337                                         goto report_problem;
4338                                 return;
4339                         }
4340                         /* The next extent should match this index's logical start */
4341                         if (extent.e_lblk != lblk) {
4342                                 struct ext2_extent_info e_info;
4343
4344                                 pctx->errcode = ext2fs_extent_get_info(ehandle,
4345                                                                        &e_info);
4346                                 if (pctx->errcode) {
4347                                         pctx->str = "ext2fs_extent_get_info";
4348                                         return;
4349                                 }
4350                                 pctx->blk = lblk;
4351                                 pctx->blk2 = extent.e_lblk;
4352                                 pctx->num = e_info.curr_level - 1;
4353                                 problem = PR_1_EXTENT_INDEX_START_INVALID;
4354                                 if (fix_problem(ctx, problem, pctx)) {
4355                                         e2fsck_pass1_fix_lock(ctx);
4356                                         pb->inode_modified = 1;
4357                                         pctx->errcode =
4358                                                 ext2fs_extent_fix_parents(ehandle);
4359                                         e2fsck_pass1_fix_unlock(ctx);
4360                                         if (pctx->errcode) {
4361                                                 pctx->str = "ext2fs_extent_fix_parents";
4362                                                 return;
4363                                         }
4364                                 }
4365                         }
4366                         scan_extent_node(ctx, pctx, pb, extent.e_lblk,
4367                                          last_lblk, eof_block, ehandle,
4368                                          next_try_repairs);
4369                         if (pctx->errcode)
4370                                 return;
4371                         pctx->errcode = ext2fs_extent_get(ehandle,
4372                                                   EXT2_EXTENT_UP, &extent);
4373                         if (pctx->errcode) {
4374                                 pctx->str = "EXT2_EXTENT_UP";
4375                                 return;
4376                         }
4377                         mark_block_used(ctx, blk);
4378                         pb->num_blocks++;
4379                         goto next;
4380                 }
4381
4382                 if ((pb->previous_block != 0) &&
4383                     (pb->previous_block+1 != extent.e_pblk)) {
4384                         if (ctx->options & E2F_OPT_FRAGCHECK) {
4385                                 char type = '?';
4386
4387                                 if (pb->is_dir)
4388                                         type = 'd';
4389                                 else if (pb->is_reg)
4390                                         type = 'f';
4391
4392                                 printf(("%6lu(%c): expecting %6lu "
4393                                         "actual extent "
4394                                         "phys %6lu log %lu len %lu\n"),
4395                                        (unsigned long) pctx->ino, type,
4396                                        (unsigned long) pb->previous_block+1,
4397                                        (unsigned long) extent.e_pblk,
4398                                        (unsigned long) extent.e_lblk,
4399                                        (unsigned long) extent.e_len);
4400                         }
4401                         pb->fragmented = 1;
4402                 }
4403                 /*
4404                  * If we notice a gap in the logical block mappings of an
4405                  * extent-mapped directory, offer to close the hole by
4406                  * moving the logical block down, otherwise we'll go mad in
4407                  * pass 3 allocating empty directory blocks to fill the hole.
4408                  */
4409                 if (try_repairs && is_dir &&
4410                     pb->last_block + 1 < extent.e_lblk) {
4411                         blk64_t new_lblk;
4412
4413                         new_lblk = pb->last_block + 1;
4414                         if (EXT2FS_CLUSTER_RATIO(ctx->fs) > 1)
4415                                 new_lblk = ((new_lblk +
4416                                              EXT2FS_CLUSTER_RATIO(ctx->fs) - 1) &
4417                                             ~EXT2FS_CLUSTER_MASK(ctx->fs)) |
4418                                            (extent.e_pblk &
4419                                             EXT2FS_CLUSTER_MASK(ctx->fs));
4420                         pctx->blk = extent.e_lblk;
4421                         pctx->blk2 = new_lblk;
4422                         if (fix_problem(ctx, PR_1_COLLAPSE_DBLOCK, pctx)) {
4423                                 e2fsck_pass1_fix_lock(ctx);
4424                                 extent.e_lblk = new_lblk;
4425                                 pb->inode_modified = 1;
4426                                 pctx->errcode = ext2fs_extent_replace(ehandle,
4427                                                                 0, &extent);
4428                                 e2fsck_pass1_fix_unlock(ctx);
4429                                 if (pctx->errcode) {
4430                                         pctx->errcode = 0;
4431                                         goto alloc_later;
4432                                 }
4433                                 e2fsck_pass1_fix_lock(ctx);
4434                                 pctx->errcode = ext2fs_extent_fix_parents(ehandle);
4435                                 e2fsck_pass1_fix_unlock(ctx);
4436                                 if (pctx->errcode)
4437                                         goto failed_add_dir_block;
4438                                 pctx->errcode = ext2fs_extent_goto(ehandle,
4439                                                                 extent.e_lblk);
4440                                 if (pctx->errcode)
4441                                         goto failed_add_dir_block;
4442                                 last_lblk = extent.e_lblk + extent.e_len - 1;
4443                                 failed_csum = 0;
4444                         }
4445                 }
4446 alloc_later:
4447                 if (is_dir) {
4448                         while (++pb->last_db_block <
4449                                (e2_blkcnt_t) extent.e_lblk) {
4450                                 pctx->errcode = ext2fs_add_dir_block2(
4451                                                         ctx->fs->dblist,
4452                                                         pb->ino, 0,
4453                                                         pb->last_db_block);
4454                                 if (pctx->errcode) {
4455                                         pctx->blk = 0;
4456                                         pctx->num = pb->last_db_block;
4457                                         goto failed_add_dir_block;
4458                                 }
4459                         }
4460
4461                         for (i = 0; i < extent.e_len; i++) {
4462                                 pctx->errcode = ext2fs_add_dir_block2(
4463                                                         ctx->fs->dblist,
4464                                                         pctx->ino,
4465                                                         extent.e_pblk + i,
4466                                                         extent.e_lblk + i);
4467                                 if (pctx->errcode) {
4468                                         pctx->blk = extent.e_pblk + i;
4469                                         pctx->num = extent.e_lblk + i;
4470                                 failed_add_dir_block:
4471                                         fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
4472                                         /* Should never get here */
4473                                         ctx->flags |= E2F_FLAG_ABORT;
4474                                         return;
4475                                 }
4476                         }
4477                         if (extent.e_len > 0)
4478                                 pb->last_db_block = extent.e_lblk + extent.e_len - 1;
4479                 }
4480                 if (has_unaligned_cluster_map(ctx, pb->previous_block,
4481                                               pb->last_block,
4482                                               extent.e_pblk,
4483                                               extent.e_lblk)) {
4484                         for (i = 0; i < extent.e_len; i++) {
4485                                 pctx->blk = extent.e_lblk + i;
4486                                 pctx->blk2 = extent.e_pblk + i;
4487                                 fix_problem(ctx, PR_1_MISALIGNED_CLUSTER, pctx);
4488                                 mark_block_used(ctx, extent.e_pblk + i);
4489                                 mark_block_used(ctx, extent.e_pblk + i);
4490                         }
4491                 }
4492
4493                 /*
4494                  * Check whether first cluster got marked in previous iteration.
4495                  */
4496                 if (ctx->fs->cluster_ratio_bits &&
4497                     pb->previous_block &&
4498                     (EXT2FS_B2C(ctx->fs, extent.e_pblk) ==
4499                      EXT2FS_B2C(ctx->fs, pb->previous_block)))
4500                         /* Set blk to the beginning of next cluster. */
4501                         blk = EXT2FS_C2B(
4502                                 ctx->fs,
4503                                 EXT2FS_B2C(ctx->fs, extent.e_pblk) + 1);
4504                 else
4505                         /* Set blk to the beginning of current cluster. */
4506                         blk = EXT2FS_C2B(ctx->fs,
4507                                          EXT2FS_B2C(ctx->fs, extent.e_pblk));
4508
4509                 if (blk < extent.e_pblk + extent.e_len) {
4510                         mark_blocks_used(ctx, blk,
4511                                          extent.e_pblk + extent.e_len - blk);
4512                         n = DIV_ROUND_UP(extent.e_pblk + extent.e_len - blk,
4513                                          EXT2FS_CLUSTER_RATIO(ctx->fs));
4514                         pb->num_blocks += n;
4515                 }
4516                 pb->last_block = extent.e_lblk + extent.e_len - 1;
4517                 pb->previous_block = extent.e_pblk + extent.e_len - 1;
4518                 start_block = pb->last_block = last_lblk;
4519                 if (is_leaf && !is_dir &&
4520                     !(extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT))
4521                         pb->last_init_lblock = last_lblk;
4522         next:
4523                 pctx->errcode = ext2fs_extent_get(ehandle,
4524                                                   EXT2_EXTENT_NEXT_SIB,
4525                                                   &extent);
4526         }
4527
4528         /* Failed csum but passes checks?  Ask to fix checksum. */
4529         if (failed_csum &&
4530             fix_problem(ctx, PR_1_EXTENT_ONLY_CSUM_INVALID, pctx)) {
4531                 e2fsck_pass1_fix_lock(ctx);
4532                 pb->inode_modified = 1;
4533                 pctx->errcode = ext2fs_extent_replace(ehandle, 0, &extent);
4534                 e2fsck_pass1_fix_unlock(ctx);
4535                 if (pctx->errcode)
4536                         return;
4537         }
4538
4539         if (pctx->errcode == EXT2_ET_EXTENT_NO_NEXT)
4540                 pctx->errcode = 0;
4541 }
4542
4543 static void check_blocks_extents(e2fsck_t ctx, struct problem_context *pctx,
4544                                  struct process_block_struct *pb)
4545 {
4546         struct ext2_extent_info info;
4547         struct ext2_inode       *inode = pctx->inode;
4548         ext2_extent_handle_t    ehandle;
4549         ext2_filsys             fs = ctx->fs;
4550         ext2_ino_t              ino = pctx->ino;
4551         errcode_t               retval;
4552         blk64_t                 eof_lblk;
4553         struct ext3_extent_header       *eh;
4554
4555         /* Check for a proper extent header... */
4556         eh = (struct ext3_extent_header *) &inode->i_block[0];
4557         retval = ext2fs_extent_header_verify(eh, sizeof(inode->i_block));
4558         if (retval) {
4559                 if (fix_problem(ctx, PR_1_MISSING_EXTENT_HEADER, pctx))
4560                         e2fsck_clear_inode(ctx, ino, inode, 0,
4561                                            "check_blocks_extents");
4562                 pctx->errcode = 0;
4563                 return;
4564         }
4565
4566         /* ...since this function doesn't fail if i_block is zeroed. */
4567         pctx->errcode = ext2fs_extent_open2(fs, ino, inode, &ehandle);
4568         if (pctx->errcode) {
4569                 if (fix_problem(ctx, PR_1_READ_EXTENT, pctx))
4570                         e2fsck_clear_inode(ctx, ino, inode, 0,
4571                                            "check_blocks_extents");
4572                 pctx->errcode = 0;
4573                 return;
4574         }
4575
4576         retval = ext2fs_extent_get_info(ehandle, &info);
4577         if (retval == 0) {
4578                 int max_depth = info.max_depth;
4579
4580                 if (max_depth >= MAX_EXTENT_DEPTH_COUNT)
4581                         max_depth = MAX_EXTENT_DEPTH_COUNT-1;
4582                 ctx->extent_depth_count[max_depth]++;
4583         }
4584
4585         /* Check maximum extent depth */
4586         pctx->blk = info.max_depth;
4587         pctx->blk2 = ext2fs_max_extent_depth(ehandle);
4588         if (pctx->blk2 < pctx->blk &&
4589             fix_problem(ctx, PR_1_EXTENT_BAD_MAX_DEPTH, pctx))
4590                 pb->eti.force_rebuild = 1;
4591
4592         /* Can we collect extent tree level stats? */
4593         pctx->blk = MAX_EXTENT_DEPTH_COUNT;
4594         if (pctx->blk2 > pctx->blk)
4595                 fix_problem(ctx, PR_1E_MAX_EXTENT_TREE_DEPTH, pctx);
4596         memset(pb->eti.ext_info, 0, sizeof(pb->eti.ext_info));
4597         pb->eti.ino = pb->ino;
4598
4599         pb->next_lblock = 0;
4600
4601         eof_lblk = ((EXT2_I_SIZE(inode) + fs->blocksize - 1) >>
4602                 EXT2_BLOCK_SIZE_BITS(fs->super)) - 1;
4603         scan_extent_node(ctx, pctx, pb, 0, 0, eof_lblk, ehandle, 1);
4604         if (pctx->errcode &&
4605             fix_problem(ctx, PR_1_EXTENT_ITERATE_FAILURE, pctx)) {
4606                 pb->num_blocks = 0;
4607                 inode->i_blocks = 0;
4608                 e2fsck_clear_inode(ctx, ino, inode, E2F_FLAG_RESTART,
4609                                    "check_blocks_extents");
4610                 pctx->errcode = 0;
4611         }
4612         ext2fs_extent_free(ehandle);
4613
4614         /* Rebuild unless it's a dir and we're rehashing it */
4615         if (LINUX_S_ISDIR(inode->i_mode) &&
4616             e2fsck_dir_will_be_rehashed(ctx, ino))
4617                 return;
4618
4619         if (ctx->options & E2F_OPT_CONVERT_BMAP)
4620                 e2fsck_rebuild_extents_later(ctx, ino);
4621         else
4622                 e2fsck_should_rebuild_extents(ctx, pctx, &pb->eti, &info);
4623 }
4624
4625 /*
4626  * In fact we don't need to check blocks for an inode with inline data
4627  * because this inode doesn't have any blocks.  In this function all
4628  * we need to do is add this inode into dblist when it is a directory.
4629  */
4630 static void check_blocks_inline_data(e2fsck_t ctx, struct problem_context *pctx,
4631                                      struct process_block_struct *pb)
4632 {
4633         int     flags;
4634         size_t  inline_data_size = 0;
4635
4636         if (!pb->is_dir) {
4637                 pctx->errcode = 0;
4638                 return;
4639         }
4640
4641         /* Process the dirents in i_block[] as the "first" block. */
4642         pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist, pb->ino, 0, 0);
4643         if (pctx->errcode)
4644                 goto err;
4645
4646         /* Process the dirents in the EA as a "second" block. */
4647         flags = ctx->fs->flags;
4648         ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
4649         pctx->errcode = ext2fs_inline_data_size(ctx->fs, pb->ino,
4650                                                 &inline_data_size);
4651         ctx->fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
4652                          (ctx->fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
4653         if (pctx->errcode) {
4654                 pctx->errcode = 0;
4655                 return;
4656         }
4657
4658         if (inline_data_size <= EXT4_MIN_INLINE_DATA_SIZE)
4659                 return;
4660
4661         pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist, pb->ino, 0, 1);
4662         if (pctx->errcode)
4663                 goto err;
4664
4665         return;
4666 err:
4667         pctx->blk = 0;
4668         pctx->num = 0;
4669         fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
4670         ctx->flags |= E2F_FLAG_ABORT;
4671 }
4672
4673 /*
4674  * This subroutine is called on each inode to account for all of the
4675  * blocks used by that inode.
4676  */
4677 static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
4678                          char *block_buf, const struct ea_quota *ea_ibody_quota)
4679 {
4680         ext2_filsys fs = ctx->fs;
4681         struct process_block_struct pb;
4682         ext2_ino_t      ino = pctx->ino;
4683         struct ext2_inode *inode = pctx->inode;
4684         unsigned        bad_size = 0;
4685         int             dirty_inode = 0;
4686         int             extent_fs;
4687         int             inlinedata_fs;
4688         __u64           size;
4689         struct ea_quota ea_block_quota;
4690
4691         pb.ino = ino;
4692         pb.num_blocks = EXT2FS_B2C(ctx->fs,
4693                                    ea_ibody_quota ? ea_ibody_quota->blocks : 0);
4694         pb.last_block = ~0;
4695         pb.last_init_lblock = -1;
4696         pb.last_db_block = -1;
4697         pb.num_illegal_blocks = 0;
4698         pb.suppress = 0; pb.clear = 0;
4699         pb.fragmented = 0;
4700         pb.compressed = 0;
4701         pb.previous_block = 0;
4702         pb.is_dir = LINUX_S_ISDIR(inode->i_mode);
4703         pb.is_reg = LINUX_S_ISREG(inode->i_mode);
4704         pb.max_blocks = 1U << (31 - fs->super->s_log_block_size);
4705         pb.inode = inode;
4706         pb.pctx = pctx;
4707         pb.ctx = ctx;
4708         pb.inode_modified = 0;
4709         pb.eti.force_rebuild = 0;
4710         pctx->ino = ino;
4711         pctx->errcode = 0;
4712
4713         extent_fs = ext2fs_has_feature_extents(ctx->fs->super);
4714         inlinedata_fs = ext2fs_has_feature_inline_data(ctx->fs->super);
4715
4716         if (check_ext_attr(ctx, pctx, block_buf, &ea_block_quota)) {
4717                 if (e2fsck_should_abort(ctx))
4718                         goto out;
4719                 pb.num_blocks += EXT2FS_B2C(ctx->fs, ea_block_quota.blocks);
4720         }
4721
4722         if (inlinedata_fs && (inode->i_flags & EXT4_INLINE_DATA_FL))
4723                 check_blocks_inline_data(ctx, pctx, &pb);
4724         else if (ext2fs_inode_has_valid_blocks2(fs, inode)) {
4725                 if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL))
4726                         check_blocks_extents(ctx, pctx, &pb);
4727                 else {
4728                         int flags;
4729                         /*
4730                          * If we've modified the inode, write it out before
4731                          * iterate() tries to use it.
4732                          */
4733                         if (dirty_inode) {
4734                                 e2fsck_write_inode(ctx, ino, inode,
4735                                                    "check_blocks");
4736                                 dirty_inode = 0;
4737                         }
4738                         flags = fs->flags;
4739                         fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
4740                         pctx->errcode = ext2fs_block_iterate3(fs, ino,
4741                                                 pb.is_dir ? BLOCK_FLAG_HOLE : 0,
4742                                                 block_buf, process_block, &pb);
4743                         /*
4744                          * We do not have uninitialized extents in non extent
4745                          * files.
4746                          */
4747                         pb.last_init_lblock = pb.last_block;
4748                         /*
4749                          * If iterate() changed a block mapping, we have to
4750                          * re-read the inode.  If we decide to clear the
4751                          * inode after clearing some stuff, we'll re-write the
4752                          * bad mappings into the inode!
4753                          */
4754                         if (pb.inode_modified)
4755                                 e2fsck_read_inode(ctx, ino, inode,
4756                                                   "check_blocks");
4757                         fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
4758                                     (fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
4759
4760                         if (ctx->options & E2F_OPT_CONVERT_BMAP) {
4761 #ifdef DEBUG
4762                                 printf("bmap rebuild ino=%d\n", ino);
4763 #endif
4764                                 if (!LINUX_S_ISDIR(inode->i_mode) ||
4765                                     !e2fsck_dir_will_be_rehashed(ctx, ino))
4766                                         e2fsck_rebuild_extents_later(ctx, ino);
4767                         }
4768                 }
4769         }
4770         end_problem_latch(ctx, PR_LATCH_BLOCK);
4771         end_problem_latch(ctx, PR_LATCH_TOOBIG);
4772         if (e2fsck_should_abort(ctx))
4773                 goto out;
4774         if (pctx->errcode)
4775                 fix_problem(ctx, PR_1_BLOCK_ITERATE, pctx);
4776
4777         if (pb.fragmented && pb.num_blocks < fs->super->s_blocks_per_group) {
4778                 if (LINUX_S_ISDIR(inode->i_mode))
4779                         ctx->fs_fragmented_dir++;
4780                 else
4781                         ctx->fs_fragmented++;
4782         }
4783
4784         if (pb.clear) {
4785                 e2fsck_clear_inode(ctx, ino, inode, E2F_FLAG_RESTART,
4786                                    "check_blocks");
4787                 return;
4788         }
4789
4790         if (inode->i_flags & EXT2_INDEX_FL) {
4791                 if (handle_htree(ctx, pctx, ino, inode, block_buf)) {
4792                         inode->i_flags &= ~EXT2_INDEX_FL;
4793                         dirty_inode++;
4794                 } else {
4795                         e2fsck_add_dx_dir(ctx, ino, inode, pb.last_block+1);
4796                 }
4797         }
4798
4799         if (!pb.num_blocks && pb.is_dir &&
4800             !(inode->i_flags & EXT4_INLINE_DATA_FL)) {
4801                 if (fix_problem(ctx, PR_1_ZERO_LENGTH_DIR, pctx)) {
4802                         e2fsck_clear_inode(ctx, ino, inode, 0, "check_blocks");
4803                         ctx->fs_directory_count--;
4804                         return;
4805                 }
4806         }
4807
4808         if (ino != quota_type2inum(PRJQUOTA, fs->super) &&
4809             (ino == EXT2_ROOT_INO || ino >= EXT2_FIRST_INODE(ctx->fs->super)) &&
4810             !(inode->i_flags & EXT4_EA_INODE_FL)) {
4811                 quota_data_add(ctx->qctx, (struct ext2_inode_large *) inode,
4812                                ino,
4813                                pb.num_blocks * EXT2_CLUSTER_SIZE(fs->super));
4814                 quota_data_inodes(ctx->qctx, (struct ext2_inode_large *) inode,
4815                                   ino, (ea_ibody_quota ?
4816                                         ea_ibody_quota->inodes : 0) +
4817                                                 ea_block_quota.inodes + 1);
4818         }
4819
4820         if (!ext2fs_has_feature_huge_file(fs->super) ||
4821             !(inode->i_flags & EXT4_HUGE_FILE_FL))
4822                 pb.num_blocks *= (fs->blocksize / 512);
4823         pb.num_blocks *= EXT2FS_CLUSTER_RATIO(fs);
4824 #if 0
4825         printf("inode %u, i_size = %u, last_block = %llu, i_blocks=%llu, num_blocks = %llu\n",
4826                ino, inode->i_size, (unsigned long long) pb.last_block,
4827                (unsigned long long) ext2fs_inode_i_blocks(fs, inode),
4828                (unsigned long long) pb.num_blocks);
4829 #endif
4830         size = EXT2_I_SIZE(inode);
4831         if (pb.is_dir) {
4832                 unsigned nblock = size >> EXT2_BLOCK_SIZE_BITS(fs->super);
4833                 if (inode->i_flags & EXT4_INLINE_DATA_FL) {
4834                         int flags;
4835                         size_t sz = 0;
4836                         errcode_t err;
4837
4838                         flags = ctx->fs->flags;
4839                         ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
4840                         err = ext2fs_inline_data_size(ctx->fs, pctx->ino,
4841                                                       &sz);
4842                         ctx->fs->flags = (flags &
4843                                           EXT2_FLAG_IGNORE_CSUM_ERRORS) |
4844                                          (ctx->fs->flags &
4845                                           ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
4846                         if (err || sz != size) {
4847                                 bad_size = 7;
4848                                 pctx->num = sz;
4849                         }
4850                 } else if (size & (fs->blocksize - 1))
4851                         bad_size = 5;
4852                 else if (nblock > (pb.last_block + 1))
4853                         bad_size = 1;
4854                 else if (nblock < (pb.last_block + 1)) {
4855                         if (((pb.last_block + 1) - nblock) >
4856                             fs->super->s_prealloc_dir_blocks)
4857                                 bad_size = 2;
4858                 }
4859         } else {
4860                 if ((pb.last_init_lblock >= 0) &&
4861                     /* Do not allow initialized allocated blocks past i_size*/
4862                     (size < (__u64)pb.last_init_lblock * fs->blocksize) &&
4863                     !(inode->i_flags & EXT4_VERITY_FL))
4864                         bad_size = 3;
4865                 else if (!(extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) &&
4866                          size > ext2_max_sizes[fs->super->s_log_block_size])
4867                         /* too big for a direct/indirect-mapped file */
4868                         bad_size = 4;
4869                 else if ((extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) &&
4870                          size >
4871                          ((1ULL << (32 + EXT2_BLOCK_SIZE_BITS(fs->super))) - 1))
4872                         /* too big for an extent-based file - 32bit ee_block */
4873                         bad_size = 6;
4874         }
4875         /* i_size for symlinks is checked elsewhere */
4876         if (bad_size && !LINUX_S_ISLNK(inode->i_mode)) {
4877                 /* Did inline_data set pctx->num earlier? */
4878                 if (bad_size != 7)
4879                         pctx->num = (pb.last_block + 1) * fs->blocksize;
4880                 pctx->group = bad_size;
4881                 if (fix_problem(ctx, PR_1_BAD_I_SIZE, pctx)) {
4882                         ext2fs_inode_size_set(fs, inode, pctx->num);
4883                         if (EXT2_I_SIZE(inode) == 0 &&
4884                             (inode->i_flags & EXT4_INLINE_DATA_FL)) {
4885                                 memset(inode->i_block, 0,
4886                                        sizeof(inode->i_block));
4887                                 inode->i_flags &= ~EXT4_INLINE_DATA_FL;
4888                         }
4889                         dirty_inode++;
4890                 }
4891                 pctx->num = 0;
4892         }
4893         if (LINUX_S_ISREG(inode->i_mode) &&
4894             ext2fs_needs_large_file_feature(EXT2_I_SIZE(inode)))
4895                 ctx->large_files++;
4896         if ((fs->super->s_creator_os != EXT2_OS_HURD) &&
4897             ((pb.num_blocks != ext2fs_inode_i_blocks(fs, inode)) ||
4898              (ext2fs_has_feature_huge_file(fs->super) &&
4899               (inode->i_flags & EXT4_HUGE_FILE_FL) &&
4900               (inode->osd2.linux2.l_i_blocks_hi != 0)))) {
4901                 pctx->num = pb.num_blocks;
4902                 if (fix_problem(ctx, PR_1_BAD_I_BLOCKS, pctx)) {
4903                         inode->i_blocks = pb.num_blocks;
4904                         inode->osd2.linux2.l_i_blocks_hi = pb.num_blocks >> 32;
4905                         dirty_inode++;
4906                 }
4907                 pctx->num = 0;
4908         }
4909
4910         /*
4911          * The kernel gets mad if we ask it to allocate bigalloc clusters to
4912          * a block mapped file, so rebuild it as an extent file.  We can skip
4913          * symlinks because they're never rewritten.
4914          */
4915         if (ext2fs_has_feature_bigalloc(fs->super) &&
4916             (LINUX_S_ISREG(inode->i_mode) || LINUX_S_ISDIR(inode->i_mode)) &&
4917             ext2fs_inode_data_blocks2(fs, inode) > 0 &&
4918             (ino == EXT2_ROOT_INO || ino >= EXT2_FIRST_INO(fs->super)) &&
4919             !(inode->i_flags & (EXT4_EXTENTS_FL | EXT4_INLINE_DATA_FL)) &&
4920             fix_problem(ctx, PR_1_NO_BIGALLOC_BLOCKMAP_FILES, pctx)) {
4921                 pctx->errcode = e2fsck_rebuild_extents_later(ctx, ino);
4922                 if (pctx->errcode)
4923                         goto out;
4924         }
4925
4926         if (ctx->dirs_to_hash && pb.is_dir &&
4927             !(ctx->lost_and_found && ctx->lost_and_found == ino) &&
4928             !(inode->i_flags & EXT2_INDEX_FL) &&
4929             ((inode->i_size / fs->blocksize) >= 3))
4930                 e2fsck_rehash_dir_later(ctx, ino);
4931
4932 out:
4933         if (dirty_inode)
4934                 e2fsck_write_inode(ctx, ino, inode, "check_blocks");
4935 }
4936
4937 #if 0
4938 /*
4939  * Helper function called by process block when an illegal block is
4940  * found.  It returns a description about why the block is illegal
4941  */
4942 static char *describe_illegal_block(ext2_filsys fs, blk64_t block)
4943 {
4944         blk64_t super;
4945         int     i;
4946         static char     problem[80];
4947
4948         super = fs->super->s_first_data_block;
4949         strcpy(problem, "PROGRAMMING ERROR: Unknown reason for illegal block");
4950         if (block < super) {
4951                 sprintf(problem, "< FIRSTBLOCK (%u)", super);
4952                 return(problem);
4953         } else if (block >= ext2fs_blocks_count(fs->super)) {
4954                 sprintf(problem, "> BLOCKS (%u)", ext2fs_blocks_count(fs->super));
4955                 return(problem);
4956         }
4957         for (i = 0; i < fs->group_desc_count; i++) {
4958                 if (block == super) {
4959                         sprintf(problem, "is the superblock in group %d", i);
4960                         break;
4961                 }
4962                 if (block > super &&
4963                     block <= (super + fs->desc_blocks)) {
4964                         sprintf(problem, "is in the group descriptors "
4965                                 "of group %d", i);
4966                         break;
4967                 }
4968                 if (block == ext2fs_block_bitmap_loc(fs, i)) {
4969                         sprintf(problem, "is the block bitmap of group %d", i);
4970                         break;
4971                 }
4972                 if (block == ext2fs_inode_bitmap_loc(fs, i)) {
4973                         sprintf(problem, "is the inode bitmap of group %d", i);
4974                         break;
4975                 }
4976                 if (block >= ext2fs_inode_table_loc(fs, i) &&
4977                     (block < ext2fs_inode_table_loc(fs, i)
4978                      + fs->inode_blocks_per_group)) {
4979                         sprintf(problem, "is in the inode table of group %d",
4980                                 i);
4981                         break;
4982                 }
4983                 super += fs->super->s_blocks_per_group;
4984         }
4985         return(problem);
4986 }
4987 #endif
4988
4989 /*
4990  * This is a helper function for check_blocks().
4991  */
4992 static int process_block(ext2_filsys fs,
4993                   blk64_t       *block_nr,
4994                   e2_blkcnt_t blockcnt,
4995                   blk64_t ref_block EXT2FS_ATTR((unused)),
4996                   int ref_offset EXT2FS_ATTR((unused)),
4997                   void *priv_data)
4998 {
4999         struct process_block_struct *p;
5000         struct problem_context *pctx;
5001         blk64_t blk = *block_nr;
5002         int     ret_code = 0;
5003         problem_t       problem = 0;
5004         e2fsck_t        ctx;
5005
5006         p = (struct process_block_struct *) priv_data;
5007         pctx = p->pctx;
5008         ctx = p->ctx;
5009
5010         /*
5011          * For a directory, add logical block zero for processing even if it's
5012          * not mapped or we'll be perennially stuck with broken "." and ".."
5013          * entries.
5014          */
5015         if (p->is_dir && blockcnt == 0 && blk == 0) {
5016                 pctx->errcode = ext2fs_add_dir_block2(fs->dblist, p->ino, 0, 0);
5017                 if (pctx->errcode) {
5018                         pctx->blk = blk;
5019                         pctx->num = blockcnt;
5020                         goto failed_add_dir_block;
5021                 }
5022                 p->last_db_block++;
5023         }
5024
5025         if (blk == 0)
5026                 return 0;
5027
5028 #if 0
5029         printf("Process_block, inode %lu, block %u, #%d\n", p->ino, blk,
5030                blockcnt);
5031 #endif
5032
5033         /*
5034          * Simplistic fragmentation check.  We merely require that the
5035          * file be contiguous.  (Which can never be true for really
5036          * big files that are greater than a block group.)
5037          */
5038         if (p->previous_block && p->ino != EXT2_RESIZE_INO) {
5039                 if (p->previous_block+1 != blk) {
5040                         if (ctx->options & E2F_OPT_FRAGCHECK) {
5041                                 char type = '?';
5042
5043                                 if (p->is_dir)
5044                                         type = 'd';
5045                                 else if (p->is_reg)
5046                                         type = 'f';
5047
5048                                 printf(_("%6lu(%c): expecting %6lu "
5049                                          "got phys %6lu (blkcnt %lld)\n"),
5050                                        (unsigned long) pctx->ino, type,
5051                                        (unsigned long) p->previous_block+1,
5052                                        (unsigned long) blk,
5053                                        (long long) blockcnt);
5054                         }
5055                         p->fragmented = 1;
5056                 }
5057         }
5058
5059         if (p->is_dir && !ext2fs_has_feature_largedir(fs->super) &&
5060             !pctx->inode->i_size_high &&
5061             blockcnt > (1 << (21 - fs->super->s_log_block_size)))
5062                 problem = PR_1_TOOBIG_DIR;
5063         if (p->is_dir && p->num_blocks + 1 >= p->max_blocks)
5064                 problem = PR_1_TOOBIG_DIR;
5065         if (p->is_reg && p->num_blocks + 1 >= p->max_blocks)
5066                 problem = PR_1_TOOBIG_REG;
5067         if (!p->is_dir && !p->is_reg && blockcnt > 0)
5068                 problem = PR_1_TOOBIG_SYMLINK;
5069
5070         if (blk < fs->super->s_first_data_block ||
5071             blk >= ext2fs_blocks_count(fs->super))
5072                 problem = PR_1_ILLEGAL_BLOCK_NUM;
5073
5074         /*
5075          * If this IND/DIND/TIND block is squatting atop some critical metadata
5076          * (group descriptors, superblock, bitmap, inode table), any write to
5077          * "fix" mapping problems will destroy the metadata.  We'll let pass 1b
5078          * fix that and restart fsck.
5079          */
5080         if (blockcnt < 0 &&
5081             p->ino != EXT2_RESIZE_INO &&
5082             blk < ctx->fs->super->s_blocks_count &&
5083             ext2fs_test_block_bitmap2(ctx->block_metadata_map, blk)) {
5084                 pctx->blk = blk;
5085                 fix_problem(ctx, PR_1_CRITICAL_METADATA_COLLISION, pctx);
5086                 if ((ctx->options & E2F_OPT_NO) == 0)
5087                         ctx->flags |= E2F_FLAG_RESTART_LATER;
5088         }
5089
5090         if (problem) {
5091                 p->num_illegal_blocks++;
5092                 /*
5093                  * A bit of subterfuge here -- we're trying to fix a block
5094                  * mapping, but the IND/DIND/TIND block could have collided
5095                  * with some critical metadata.  So, fix the in-core mapping so
5096                  * iterate won't go insane, but return 0 instead of
5097                  * BLOCK_CHANGED so that it won't write the remapping out to
5098                  * our multiply linked block.
5099                  *
5100                  * Even if we previously determined that an *IND block
5101                  * conflicts with critical metadata, we must still try to
5102                  * iterate the *IND block as if it is an *IND block to find and
5103                  * mark the blocks it points to.  Better to be overly cautious
5104                  * with the used_blocks map so that we don't move the *IND
5105                  * block to a block that's really in use!
5106                  */
5107                 if (p->ino != EXT2_RESIZE_INO &&
5108                     ref_block != 0 &&
5109                     ext2fs_test_block_bitmap2(ctx->block_metadata_map,
5110                                               ref_block)) {
5111                         *block_nr = 0;
5112                         return 0;
5113                 }
5114                 if (!p->suppress && (p->num_illegal_blocks % 12) == 0) {
5115                         if (fix_problem(ctx, PR_1_TOO_MANY_BAD_BLOCKS, pctx)) {
5116                                 p->clear = 1;
5117                                 return BLOCK_ABORT;
5118                         }
5119                         if (fix_problem(ctx, PR_1_SUPPRESS_MESSAGES, pctx)) {
5120                                 p->suppress = 1;
5121                                 set_latch_flags(PR_LATCH_BLOCK,
5122                                                 PRL_SUPPRESS, 0);
5123                         }
5124                 }
5125                 pctx->blk = blk;
5126                 pctx->blkcount = blockcnt;
5127                 if (fix_problem(ctx, problem, pctx)) {
5128                         blk = *block_nr = 0;
5129                         ret_code = BLOCK_CHANGED;
5130                         p->inode_modified = 1;
5131                         /*
5132                          * If the directory block is too big and is beyond the
5133                          * end of the FS, don't bother trying to add it for
5134                          * processing -- the kernel would never have created a
5135                          * directory this large, and we risk an ENOMEM abort.
5136                          * In any case, the toobig handler for extent-based
5137                          * directories also doesn't feed toobig blocks to
5138                          * pass 2.
5139                          */
5140                         if (problem == PR_1_TOOBIG_DIR)
5141                                 return ret_code;
5142                         goto mark_dir;
5143                 } else
5144                         return 0;
5145         }
5146
5147         if (p->ino == EXT2_RESIZE_INO) {
5148                 /*
5149                  * The resize inode has already be sanity checked
5150                  * during pass #0 (the superblock checks).  All we
5151                  * have to do is mark the double indirect block as
5152                  * being in use; all of the other blocks are handled
5153                  * by mark_table_blocks()).
5154                  */
5155                 if (blockcnt == BLOCK_COUNT_DIND)
5156                         mark_block_used(ctx, blk);
5157                 p->num_blocks++;
5158         } else if (!(ctx->fs->cluster_ratio_bits &&
5159                      p->previous_block &&
5160                      (EXT2FS_B2C(ctx->fs, blk) ==
5161                       EXT2FS_B2C(ctx->fs, p->previous_block)) &&
5162                      (blk & EXT2FS_CLUSTER_MASK(ctx->fs)) ==
5163                      ((unsigned) blockcnt & EXT2FS_CLUSTER_MASK(ctx->fs)))) {
5164                 mark_block_used(ctx, blk);
5165                 p->num_blocks++;
5166         } else if (has_unaligned_cluster_map(ctx, p->previous_block,
5167                                              p->last_block, blk, blockcnt)) {
5168                 pctx->blk = blockcnt;
5169                 pctx->blk2 = blk;
5170                 fix_problem(ctx, PR_1_MISALIGNED_CLUSTER, pctx);
5171                 mark_block_used(ctx, blk);
5172                 mark_block_used(ctx, blk);
5173         }
5174         if (blockcnt >= 0)
5175                 p->last_block = blockcnt;
5176         p->previous_block = blk;
5177 mark_dir:
5178         if (p->is_dir && (blockcnt >= 0)) {
5179                 while (++p->last_db_block < blockcnt) {
5180                         pctx->errcode = ext2fs_add_dir_block2(fs->dblist,
5181                                                               p->ino, 0,
5182                                                               p->last_db_block);
5183                         if (pctx->errcode) {
5184                                 pctx->blk = 0;
5185                                 pctx->num = p->last_db_block;
5186                                 goto failed_add_dir_block;
5187                         }
5188                 }
5189                 pctx->errcode = ext2fs_add_dir_block2(fs->dblist, p->ino,
5190                                                       blk, blockcnt);
5191                 if (pctx->errcode) {
5192                         pctx->blk = blk;
5193                         pctx->num = blockcnt;
5194                 failed_add_dir_block:
5195                         fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
5196                         /* Should never get here */
5197                         ctx->flags |= E2F_FLAG_ABORT;
5198                         return BLOCK_ABORT;
5199                 }
5200         }
5201         return ret_code;
5202 }
5203
5204 static int process_bad_block(ext2_filsys fs,
5205                       blk64_t *block_nr,
5206                       e2_blkcnt_t blockcnt,
5207                       blk64_t ref_block EXT2FS_ATTR((unused)),
5208                       int ref_offset EXT2FS_ATTR((unused)),
5209                       void *priv_data)
5210 {
5211         struct process_block_struct *p;
5212         blk64_t         blk = *block_nr;
5213         blk64_t         first_block;
5214         dgrp_t          i;
5215         struct problem_context *pctx;
5216         e2fsck_t        ctx;
5217
5218         if (!blk)
5219                 return 0;
5220
5221         p = (struct process_block_struct *) priv_data;
5222         ctx = p->ctx;
5223         pctx = p->pctx;
5224
5225         pctx->ino = EXT2_BAD_INO;
5226         pctx->blk = blk;
5227         pctx->blkcount = blockcnt;
5228
5229         if ((blk < fs->super->s_first_data_block) ||
5230             (blk >= ext2fs_blocks_count(fs->super))) {
5231                 if (fix_problem(ctx, PR_1_BB_ILLEGAL_BLOCK_NUM, pctx)) {
5232                         *block_nr = 0;
5233                         return BLOCK_CHANGED;
5234                 } else
5235                         return 0;
5236         }
5237
5238         if (blockcnt < 0) {
5239                 if (ext2fs_test_block_bitmap2(p->fs_meta_blocks, blk)) {
5240                         p->bbcheck = 1;
5241                         if (fix_problem(ctx, PR_1_BB_FS_BLOCK, pctx)) {
5242                                 *block_nr = 0;
5243                                 return BLOCK_CHANGED;
5244                         }
5245                 } else if (is_blocks_used(ctx, blk, 1)) {
5246                         p->bbcheck = 1;
5247                         if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK,
5248                                         pctx)) {
5249                                 *block_nr = 0;
5250                                 return BLOCK_CHANGED;
5251                         }
5252                         if (e2fsck_should_abort(ctx))
5253                                 return BLOCK_ABORT;
5254                 } else {
5255                         mark_block_used(ctx, blk);
5256                 }
5257                 return 0;
5258         }
5259 #if 0
5260         printf ("DEBUG: Marking %u as bad.\n", blk);
5261 #endif
5262         ctx->fs_badblocks_count++;
5263         /*
5264          * If the block is not used, then mark it as used and return.
5265          * If it is already marked as found, this must mean that
5266          * there's an overlap between the filesystem table blocks
5267          * (bitmaps and inode table) and the bad block list.
5268          */
5269         if (!is_blocks_used(ctx, blk, 1)) {
5270                 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
5271                 return 0;
5272         }
5273         /*
5274          * Try to find the where the filesystem block was used...
5275          */
5276         first_block = fs->super->s_first_data_block;
5277
5278         for (i = 0; i < fs->group_desc_count; i++ ) {
5279                 pctx->group = i;
5280                 pctx->blk = blk;
5281                 if (!ext2fs_bg_has_super(fs, i))
5282                         goto skip_super;
5283                 if (blk == first_block) {
5284                         if (i == 0) {
5285                                 if (fix_problem(ctx,
5286                                                 PR_1_BAD_PRIMARY_SUPERBLOCK,
5287                                                 pctx)) {
5288                                         *block_nr = 0;
5289                                         return BLOCK_CHANGED;
5290                                 }
5291                                 return 0;
5292                         }
5293                         fix_problem(ctx, PR_1_BAD_SUPERBLOCK, pctx);
5294                         return 0;
5295                 }
5296                 if ((blk > first_block) &&
5297                     (blk <= first_block + fs->desc_blocks)) {
5298                         if (i == 0) {
5299                                 pctx->blk = *block_nr;
5300                                 if (fix_problem(ctx,
5301                         PR_1_BAD_PRIMARY_GROUP_DESCRIPTOR, pctx)) {
5302                                         *block_nr = 0;
5303                                         return BLOCK_CHANGED;
5304                                 }
5305                                 return 0;
5306                         }
5307                         fix_problem(ctx, PR_1_BAD_GROUP_DESCRIPTORS, pctx);
5308                         return 0;
5309                 }
5310         skip_super:
5311                 if (blk == ext2fs_block_bitmap_loc(fs, i)) {
5312                         if (fix_problem(ctx, PR_1_BB_BAD_BLOCK, pctx)) {
5313                                 ctx->invalid_block_bitmap_flag[i]++;
5314                                 ctx->invalid_bitmaps++;
5315                         }
5316                         return 0;
5317                 }
5318                 if (blk == ext2fs_inode_bitmap_loc(fs, i)) {
5319                         if (fix_problem(ctx, PR_1_IB_BAD_BLOCK, pctx)) {
5320                                 ctx->invalid_inode_bitmap_flag[i]++;
5321                                 ctx->invalid_bitmaps++;
5322                         }
5323                         return 0;
5324                 }
5325                 if ((blk >= ext2fs_inode_table_loc(fs, i)) &&
5326                     (blk < (ext2fs_inode_table_loc(fs, i) +
5327                             fs->inode_blocks_per_group))) {
5328                         /*
5329                          * If there are bad blocks in the inode table,
5330                          * the inode scan code will try to do
5331                          * something reasonable automatically.
5332                          */
5333                         return 0;
5334                 }
5335                 first_block += fs->super->s_blocks_per_group;
5336         }
5337         /*
5338          * If we've gotten to this point, then the only
5339          * possibility is that the bad block inode meta data
5340          * is using a bad block.
5341          */
5342         if ((blk == p->inode->i_block[EXT2_IND_BLOCK]) ||
5343             (blk == p->inode->i_block[EXT2_DIND_BLOCK]) ||
5344             (blk == p->inode->i_block[EXT2_TIND_BLOCK])) {
5345                 p->bbcheck = 1;
5346                 if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK, pctx)) {
5347                         *block_nr = 0;
5348                         return BLOCK_CHANGED;
5349                 }
5350                 if (e2fsck_should_abort(ctx))
5351                         return BLOCK_ABORT;
5352                 return 0;
5353         }
5354
5355         pctx->group = -1;
5356
5357         /* Warn user that the block wasn't claimed */
5358         fix_problem(ctx, PR_1_PROGERR_CLAIMED_BLOCK, pctx);
5359
5360         return 0;
5361 }
5362
5363 static void new_table_block(e2fsck_t ctx, blk64_t first_block, dgrp_t group,
5364                             const char *name, int num, blk64_t *new_block)
5365 {
5366         ext2_filsys fs = ctx->fs;
5367         dgrp_t          last_grp;
5368         blk64_t         old_block = *new_block;
5369         blk64_t         last_block;
5370         dgrp_t          flexbg;
5371         unsigned        flexbg_size;
5372         int             i, is_flexbg;
5373         char            *buf;
5374         struct problem_context  pctx;
5375
5376         clear_problem_context(&pctx);
5377
5378         pctx.group = group;
5379         pctx.blk = old_block;
5380         pctx.str = name;
5381
5382         /*
5383          * For flex_bg filesystems, first try to allocate the metadata
5384          * within the flex_bg, and if that fails then try finding the
5385          * space anywhere in the filesystem.
5386          */
5387         is_flexbg = ext2fs_has_feature_flex_bg(fs->super);
5388         if (is_flexbg) {
5389                 flexbg_size = 1 << fs->super->s_log_groups_per_flex;
5390                 flexbg = group / flexbg_size;
5391                 first_block = ext2fs_group_first_block2(fs,
5392                                                         flexbg_size * flexbg);
5393                 last_grp = group | (flexbg_size - 1);
5394                 if (last_grp >= fs->group_desc_count)
5395                         last_grp = fs->group_desc_count - 1;
5396                 last_block = ext2fs_group_last_block2(fs, last_grp);
5397         } else
5398                 last_block = ext2fs_group_last_block2(fs, group);
5399         pctx.errcode = ext2fs_get_free_blocks2(fs, first_block, last_block,
5400                                                num, ctx->block_found_map,
5401                                                new_block);
5402         if (is_flexbg && (pctx.errcode == EXT2_ET_BLOCK_ALLOC_FAIL))
5403                 pctx.errcode = ext2fs_get_free_blocks2(fs,
5404                                 fs->super->s_first_data_block,
5405                                 ext2fs_blocks_count(fs->super),
5406                                 num, ctx->block_found_map, new_block);
5407         if (pctx.errcode) {
5408                 pctx.num = num;
5409                 fix_problem(ctx, PR_1_RELOC_BLOCK_ALLOCATE, &pctx);
5410                 ext2fs_unmark_valid(fs);
5411                 ctx->flags |= E2F_FLAG_ABORT;
5412                 return;
5413         }
5414         pctx.errcode = ext2fs_get_mem(fs->blocksize, &buf);
5415         if (pctx.errcode) {
5416                 fix_problem(ctx, PR_1_RELOC_MEMORY_ALLOCATE, &pctx);
5417                 ext2fs_unmark_valid(fs);
5418                 ctx->flags |= E2F_FLAG_ABORT;
5419                 return;
5420         }
5421         ext2fs_mark_super_dirty(fs);
5422         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
5423         pctx.blk2 = *new_block;
5424         fix_problem(ctx, (old_block ? PR_1_RELOC_FROM_TO :
5425                           PR_1_RELOC_TO), &pctx);
5426         pctx.blk2 = 0;
5427         for (i = 0; i < num; i++) {
5428                 pctx.blk = i;
5429                 ext2fs_mark_block_bitmap2(ctx->block_found_map, (*new_block)+i);
5430                 if (old_block) {
5431                         pctx.errcode = io_channel_read_blk64(fs->io,
5432                                    old_block + i, 1, buf);
5433                         if (pctx.errcode)
5434                                 fix_problem(ctx, PR_1_RELOC_READ_ERR, &pctx);
5435                         pctx.blk = (*new_block) + i;
5436                         pctx.errcode = io_channel_write_blk64(fs->io, pctx.blk,
5437                                                               1, buf);
5438                 } else {
5439                         pctx.blk = (*new_block) + i;
5440                         pctx.errcode = ext2fs_zero_blocks2(fs, pctx.blk, 1,
5441                                                            NULL, NULL);
5442                 }
5443
5444                 if (pctx.errcode)
5445                         fix_problem(ctx, PR_1_RELOC_WRITE_ERR, &pctx);
5446         }
5447         ext2fs_free_mem(&buf);
5448 }
5449
5450 /*
5451  * This routine gets called at the end of pass 1 if bad blocks are
5452  * detected in the superblock, group descriptors, inode_bitmaps, or
5453  * block bitmaps.  At this point, all of the blocks have been mapped
5454  * out, so we can try to allocate new block(s) to replace the bad
5455  * blocks.
5456  */
5457 static void handle_fs_bad_blocks(e2fsck_t ctx)
5458 {
5459         ext2_filsys fs = ctx->fs;
5460         dgrp_t          i;
5461         blk64_t         first_block;
5462         blk64_t         new_blk;
5463
5464         for (i = 0; i < fs->group_desc_count; i++) {
5465                 first_block = ext2fs_group_first_block2(fs, i);
5466
5467                 if (ctx->invalid_block_bitmap_flag[i]) {
5468                         new_blk = ext2fs_block_bitmap_loc(fs, i);
5469                         new_table_block(ctx, first_block, i, _("block bitmap"),
5470                                         1, &new_blk);
5471                         ext2fs_block_bitmap_loc_set(fs, i, new_blk);
5472                 }
5473                 if (ctx->invalid_inode_bitmap_flag[i]) {
5474                         new_blk = ext2fs_inode_bitmap_loc(fs, i);
5475                         new_table_block(ctx, first_block, i, _("inode bitmap"),
5476                                         1, &new_blk);
5477                         ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
5478                 }
5479                 if (ctx->invalid_inode_table_flag[i]) {
5480                         new_blk = ext2fs_inode_table_loc(fs, i);
5481                         new_table_block(ctx, first_block, i, _("inode table"),
5482                                         fs->inode_blocks_per_group,
5483                                         &new_blk);
5484                         ext2fs_inode_table_loc_set(fs, i, new_blk);
5485                         ctx->flags |= E2F_FLAG_RESTART;
5486                 }
5487         }
5488         ctx->invalid_bitmaps = 0;
5489 }
5490
5491 /*
5492  * This routine marks all blocks which are used by the superblock,
5493  * group descriptors, inode bitmaps, and block bitmaps.
5494  */
5495 static void mark_table_blocks(e2fsck_t ctx)
5496 {
5497         ext2_filsys fs = ctx->fs;
5498         blk64_t b;
5499         dgrp_t  i;
5500         unsigned int    j;
5501         struct problem_context pctx;
5502
5503         clear_problem_context(&pctx);
5504
5505         for (i = 0; i < fs->group_desc_count; i++) {
5506                 pctx.group = i;
5507
5508                 ext2fs_reserve_super_and_bgd(fs, i, ctx->block_found_map);
5509                 ext2fs_reserve_super_and_bgd(fs, i, ctx->block_metadata_map);
5510
5511                 /*
5512                  * Mark the blocks used for the inode table
5513                  */
5514                 if (ext2fs_inode_table_loc(fs, i)) {
5515                         for (j = 0, b = ext2fs_inode_table_loc(fs, i);
5516                              j < fs->inode_blocks_per_group;
5517                              j++, b++) {
5518                                 if (ext2fs_test_block_bitmap2(ctx->block_found_map,
5519                                                              b)) {
5520                                         pctx.blk = b;
5521                                         if (!ctx->invalid_inode_table_flag[i] &&
5522                                             fix_problem(ctx,
5523                                                 PR_1_ITABLE_CONFLICT, &pctx)) {
5524                                                 ctx->invalid_inode_table_flag[i]++;
5525                                                 ctx->invalid_bitmaps++;
5526                                         }
5527                                 } else {
5528                                     ext2fs_mark_block_bitmap2(
5529                                                 ctx->block_found_map, b);
5530                                     ext2fs_mark_block_bitmap2(
5531                                                 ctx->block_metadata_map, b);
5532                                 }
5533                         }
5534                 }
5535
5536                 /*
5537                  * Mark block used for the block bitmap
5538                  */
5539                 if (ext2fs_block_bitmap_loc(fs, i)) {
5540                         if (ext2fs_test_block_bitmap2(ctx->block_found_map,
5541                                      ext2fs_block_bitmap_loc(fs, i))) {
5542                                 pctx.blk = ext2fs_block_bitmap_loc(fs, i);
5543                                 if (fix_problem(ctx, PR_1_BB_CONFLICT, &pctx)) {
5544                                         ctx->invalid_block_bitmap_flag[i]++;
5545                                         ctx->invalid_bitmaps++;
5546                                 }
5547                         } else {
5548                             ext2fs_mark_block_bitmap2(ctx->block_found_map,
5549                                      ext2fs_block_bitmap_loc(fs, i));
5550                             ext2fs_mark_block_bitmap2(ctx->block_metadata_map,
5551                                      ext2fs_block_bitmap_loc(fs, i));
5552                         }
5553                 }
5554                 /*
5555                  * Mark block used for the inode bitmap
5556                  */
5557                 if (ext2fs_inode_bitmap_loc(fs, i)) {
5558                         if (ext2fs_test_block_bitmap2(ctx->block_found_map,
5559                                      ext2fs_inode_bitmap_loc(fs, i))) {
5560                                 pctx.blk = ext2fs_inode_bitmap_loc(fs, i);
5561                                 if (fix_problem(ctx, PR_1_IB_CONFLICT, &pctx)) {
5562                                         ctx->invalid_inode_bitmap_flag[i]++;
5563                                         ctx->invalid_bitmaps++;
5564                                 }
5565                         } else {
5566                             ext2fs_mark_block_bitmap2(ctx->block_metadata_map,
5567                                      ext2fs_inode_bitmap_loc(fs, i));
5568                             ext2fs_mark_block_bitmap2(ctx->block_found_map,
5569                                      ext2fs_inode_bitmap_loc(fs, i));
5570                         }
5571                 }
5572         }
5573 }
5574
5575 /*
5576  * These subroutines short circuits ext2fs_get_blocks and
5577  * ext2fs_check_directory; we use them since we already have the inode
5578  * structure, so there's no point in letting the ext2fs library read
5579  * the inode again.
5580  */
5581 static errcode_t pass1_get_blocks(ext2_filsys fs, ext2_ino_t ino,
5582                                   blk_t *blocks)
5583 {
5584         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
5585         int     i;
5586
5587         if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
5588                 return EXT2_ET_CALLBACK_NOTHANDLED;
5589
5590         for (i=0; i < EXT2_N_BLOCKS; i++)
5591                 blocks[i] = ctx->stashed_inode->i_block[i];
5592         return 0;
5593 }
5594
5595 static errcode_t pass1_read_inode(ext2_filsys fs, ext2_ino_t ino,
5596                                   struct ext2_inode *inode)
5597 {
5598         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
5599
5600         if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
5601                 return EXT2_ET_CALLBACK_NOTHANDLED;
5602         *inode = *ctx->stashed_inode;
5603         return 0;
5604 }
5605
5606 static errcode_t pass1_write_inode(ext2_filsys fs, ext2_ino_t ino,
5607                             struct ext2_inode *inode)
5608 {
5609         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
5610
5611         if ((ino == ctx->stashed_ino) && ctx->stashed_inode &&
5612                 (inode != ctx->stashed_inode))
5613                 *ctx->stashed_inode = *inode;
5614         return EXT2_ET_CALLBACK_NOTHANDLED;
5615 }
5616
5617 static errcode_t pass1_check_directory(ext2_filsys fs, ext2_ino_t ino)
5618 {
5619         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
5620
5621         if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
5622                 return EXT2_ET_CALLBACK_NOTHANDLED;
5623
5624         if (!LINUX_S_ISDIR(ctx->stashed_inode->i_mode))
5625                 return EXT2_ET_NO_DIRECTORY;
5626         return 0;
5627 }
5628
5629 static errcode_t e2fsck_get_alloc_block(ext2_filsys fs, blk64_t goal,
5630                                         blk64_t *ret)
5631 {
5632         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
5633         errcode_t       retval;
5634         blk64_t         new_block;
5635
5636         if (ctx->block_found_map) {
5637                 retval = ext2fs_new_block2(fs, goal, ctx->block_found_map,
5638                                            &new_block);
5639                 if (retval)
5640                         return retval;
5641                 if (fs->block_map) {
5642                         ext2fs_mark_block_bitmap2(fs->block_map, new_block);
5643                         ext2fs_mark_bb_dirty(fs);
5644                 }
5645         } else {
5646                 if (!fs->block_map) {
5647                         retval = ext2fs_read_block_bitmap(fs);
5648                         if (retval)
5649                                 return retval;
5650                 }
5651
5652                 retval = ext2fs_new_block2(fs, goal, fs->block_map, &new_block);
5653                 if (retval)
5654                         return retval;
5655         }
5656
5657         *ret = new_block;
5658         return (0);
5659 }
5660
5661 static errcode_t e2fsck_new_range(ext2_filsys fs, int flags, blk64_t goal,
5662                                   blk64_t len, blk64_t *pblk, blk64_t *plen)
5663 {
5664         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
5665         errcode_t       retval;
5666
5667         if (ctx->block_found_map)
5668                 return ext2fs_new_range(fs, flags, goal, len,
5669                                         ctx->block_found_map, pblk, plen);
5670
5671         if (!fs->block_map) {
5672                 retval = ext2fs_read_block_bitmap(fs);
5673                 if (retval)
5674                         return retval;
5675         }
5676
5677         return ext2fs_new_range(fs, flags, goal, len, fs->block_map,
5678                                 pblk, plen);
5679 }
5680
5681 static void e2fsck_block_alloc_stats(ext2_filsys fs, blk64_t blk, int inuse)
5682 {
5683         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
5684
5685         /* Never free a critical metadata block */
5686         if (ctx->block_found_map &&
5687             ctx->block_metadata_map &&
5688             inuse < 0 &&
5689             ext2fs_test_block_bitmap2(ctx->block_metadata_map, blk))
5690                 return;
5691
5692         if (ctx->block_found_map) {
5693                 if (inuse > 0)
5694                         ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
5695                 else
5696                         ext2fs_unmark_block_bitmap2(ctx->block_found_map, blk);
5697         }
5698 }
5699
5700 static void e2fsck_block_alloc_stats_range(ext2_filsys fs, blk64_t blk,
5701                                            blk_t num, int inuse)
5702 {
5703         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
5704
5705         /* Never free a critical metadata block */
5706         if (ctx->block_found_map &&
5707             ctx->block_metadata_map &&
5708             inuse < 0 &&
5709             ext2fs_test_block_bitmap_range2(ctx->block_metadata_map, blk, num))
5710                 return;
5711
5712         if (ctx->block_found_map) {
5713                 if (inuse > 0)
5714                         ext2fs_mark_block_bitmap_range2(ctx->block_found_map,
5715                                                         blk, num);
5716                 else
5717                         ext2fs_unmark_block_bitmap_range2(ctx->block_found_map,
5718                                                         blk, num);
5719         }
5720 }
5721
5722 void e2fsck_use_inode_shortcuts(e2fsck_t ctx, int use_shortcuts)
5723 {
5724         ext2_filsys fs = ctx->fs;
5725
5726         if (use_shortcuts) {
5727                 fs->get_blocks = pass1_get_blocks;
5728                 fs->check_directory = pass1_check_directory;
5729                 fs->read_inode = pass1_read_inode;
5730                 fs->write_inode = pass1_write_inode;
5731                 ctx->stashed_ino = 0;
5732         } else {
5733                 fs->get_blocks = 0;
5734                 fs->check_directory = 0;
5735                 fs->read_inode = 0;
5736                 fs->write_inode = 0;
5737         }
5738 }
5739
5740 void e2fsck_intercept_block_allocations(e2fsck_t ctx)
5741 {
5742         ext2fs_set_alloc_block_callback(ctx->fs, e2fsck_get_alloc_block, 0);
5743         ext2fs_set_block_alloc_stats_callback(ctx->fs,
5744                                                 e2fsck_block_alloc_stats, 0);
5745         ext2fs_set_new_range_callback(ctx->fs, e2fsck_new_range, NULL);
5746         ext2fs_set_block_alloc_stats_range_callback(ctx->fs,
5747                                         e2fsck_block_alloc_stats_range, NULL);
5748 }