e2fsck/pass1.c

   1 /*
   2  * pass1.c -- pass #1 of e2fsck: sequential scan of the inode table
   3  *
   4  * Copyright (C) 1993, 1994, 1995, 1996, 1997 Theodore Ts'o.
   5  *
   6  * %Begin-Header%
   7  * This file may be redistributed under the terms of the GNU Public
   8  * License.
   9  * %End-Header%
  10  *
  11  * Pass 1 of e2fsck iterates over all the inodes in the filesystems,
  12  * and applies the following tests to each inode:
  13  *
  14  *      - The mode field of the inode must be legal.
  15  *      - The size and block count fields of the inode are correct.
  16  *      - A data block must not be used by another inode
  17  *
  18  * Pass 1 also gathers the collects the following information:
  19  *
  20  *      - A bitmap of which inodes are in use.          (inode_used_map)
  21  *      - A bitmap of which inodes are directories.     (inode_dir_map)
  22  *      - A bitmap of which inodes are regular files.   (inode_reg_map)
  23  *      - A bitmap of which inodes have bad fields.     (inode_bad_map)
  24  *      - A bitmap of which inodes are in bad blocks.   (inode_bb_map)
  25  *      - A bitmap of which inodes are imagic inodes.   (inode_imagic_map)
  26  *      - A bitmap of which inodes are casefolded.      (inode_casefold_map)
  27  *      - A bitmap of which blocks are in use.          (block_found_map)
  28  *      - A bitmap of which blocks are in use by two inodes     (block_dup_map)
  29  *      - The data blocks of the directory inodes.      (dir_map)
  30  *      - Ref counts for ea_inodes.                     (ea_inode_refs)
  31  *      - The encryption policy ID of each encrypted inode. (encrypted_files)
  32  *
  33  * Pass 1 is designed to stash away enough information so that the
  34  * other passes should not need to read in the inode information
  35  * during the normal course of a filesystem check.  (Although if an
  36  * inconsistency is detected, other passes may need to read in an
  37  * inode to fix it.)
  38  *
  39  * Note that pass 1B will be invoked if there are any duplicate blocks
  40  * found.
  41  */
  42
  43 #define _GNU_SOURCE 1 /* get strnlen() */
  44 #include "config.h"
  45 #include <string.h>
  46 #include <time.h>
  47 #ifdef HAVE_ERRNO_H
  48 #include <errno.h>
  49 #endif
  50 #include <assert.h>
  51 #ifdef HAVE_PTHREAD
  52 #include <pthread.h>
  53 #endif
  54
  55 #include "e2fsck.h"
  56 #include <ext2fs/ext2_ext_attr.h>
  57 /* todo remove this finally */
  58 #include <ext2fs/ext2fsP.h>
  59 #include <e2p/e2p.h>
  60
  61 #include "problem.h"
  62
  63 #ifdef NO_INLINE_FUNCS
  64 #define _INLINE_
  65 #else
  66 #define _INLINE_ inline
  67 #endif
  68
  69 #undef DEBUG
  70
  71 struct ea_quota {
  72         blk64_t blocks;
  73         __u64 inodes;
  74 };
  75
  76 static int process_block(ext2_filsys fs, blk64_t        *blocknr,
  77                          e2_blkcnt_t blockcnt, blk64_t ref_blk,
  78                          int ref_offset, void *priv_data);
  79 static int process_bad_block(ext2_filsys fs, blk64_t *block_nr,
  80                              e2_blkcnt_t blockcnt, blk64_t ref_blk,
  81                              int ref_offset, void *priv_data);
  82 static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
  83                          char *block_buf,
  84                          const struct ea_quota *ea_ibody_quota);
  85 static void mark_table_blocks(e2fsck_t ctx);
  86 static void alloc_bb_map(e2fsck_t ctx);
  87 static void alloc_imagic_map(e2fsck_t ctx);
  88 static void mark_inode_bad(e2fsck_t ctx, ino_t ino);
  89 static void add_casefolded_dir(e2fsck_t ctx, ino_t ino);
  90 static void handle_fs_bad_blocks(e2fsck_t ctx);
  91 static EXT2_QSORT_TYPE process_inode_cmp(const void *a, const void *b);
  92 static errcode_t scan_callback(ext2_filsys fs, ext2_inode_scan scan,
  93                                   dgrp_t group, void * priv_data);
  94 static void adjust_extattr_refcount(e2fsck_t ctx, ext2_refcount_t refcount,
  95                                     char *block_buf, int adjust_sign);
  96 /* static char *describe_illegal_block(ext2_filsys fs, blk64_t block); */
  97
  98 struct process_block_struct {
  99         ext2_ino_t      ino;
 100         unsigned        is_dir:1, is_reg:1, clear:1, suppress:1,
 101                                 fragmented:1, compressed:1, bbcheck:1,
 102                                 inode_modified:1;
 103         blk64_t         num_blocks;
 104         blk64_t         max_blocks;
 105         blk64_t         last_block;
 106         e2_blkcnt_t     last_init_lblock;
 107         e2_blkcnt_t     last_db_block;
 108         int             num_illegal_blocks;
 109         blk64_t         previous_block;
 110         struct ext2_inode *inode;
 111         struct problem_context *pctx;
 112         ext2fs_block_bitmap fs_meta_blocks;
 113         e2fsck_t        ctx;
 114         blk64_t         next_lblock;
 115         struct extent_tree_info eti;
 116 };
 117
 118 struct process_inode_block {
 119         ext2_ino_t ino;
 120         struct ea_quota ea_ibody_quota;
 121         struct ext2_inode_large inode;
 122 };
 123
 124 struct scan_callback_struct {
 125         e2fsck_t                         ctx;
 126         char                            *block_buf;
 127         struct process_inode_block      *inodes_to_process;
 128         int                             *process_inode_count;
 129 };
 130
 131 static void process_inodes(e2fsck_t ctx, char *block_buf,
 132                            struct process_inode_block *inodes_to_process,
 133                            int *process_inode_count);
 134
 135 static __u64 ext2_max_sizes[EXT2_MAX_BLOCK_LOG_SIZE -
 136                             EXT2_MIN_BLOCK_LOG_SIZE + 1];
 137
 138 /*
 139  * Check to make sure a device inode is real.  Returns 1 if the device
 140  * checks out, 0 if not.
 141  *
 142  * Note: this routine is now also used to check FIFO's and Sockets,
 143  * since they have the same requirement; the i_block fields should be
 144  * zero.
 145  */
 146 int e2fsck_pass1_check_device_inode(ext2_filsys fs EXT2FS_ATTR((unused)),
 147                                     struct ext2_inode *inode)
 148 {
 149         int     i;
 150
 151         /*
 152          * If the index or extents flag is set, then this is a bogus
 153          * device/fifo/socket
 154          */
 155         if (inode->i_flags & (EXT2_INDEX_FL | EXT4_EXTENTS_FL))
 156                 return 0;
 157
 158         /*
 159          * We should be able to do the test below all the time, but
 160          * because the kernel doesn't forcibly clear the device
 161          * inode's additional i_block fields, there are some rare
 162          * occasions when a legitimate device inode will have non-zero
 163          * additional i_block fields.  So for now, we only complain
 164          * when the immutable flag is set, which should never happen
 165          * for devices.  (And that's when the problem is caused, since
 166          * you can't set or clear immutable flags for devices.)  Once
 167          * the kernel has been fixed we can change this...
 168          */
 169         if (inode->i_flags & (EXT2_IMMUTABLE_FL | EXT2_APPEND_FL)) {
 170                 for (i=4; i < EXT2_N_BLOCKS; i++)
 171                         if (inode->i_block[i])
 172                                 return 0;
 173         }
 174         return 1;
 175 }
 176
 177 /*
 178  * Check to make sure a symlink inode is real.  Returns 1 if the symlink
 179  * checks out, 0 if not.
 180  */
 181 int e2fsck_pass1_check_symlink(ext2_filsys fs, ext2_ino_t ino,
 182                                struct ext2_inode *inode, char *buf)
 183 {
 184         unsigned int buflen;
 185         unsigned int len;
 186
 187         if ((inode->i_size_high || inode->i_size == 0) ||
 188             (inode->i_flags & EXT2_INDEX_FL))
 189                 return 0;
 190
 191         if (inode->i_flags & EXT4_INLINE_DATA_FL) {
 192                 size_t inline_size;
 193
 194                 if (inode->i_flags & EXT4_EXTENTS_FL)
 195                         return 0;
 196                 if (ext2fs_inline_data_size(fs, ino, &inline_size))
 197                         return 0;
 198                 if (inode->i_size != inline_size)
 199                         return 0;
 200
 201                 return 1;
 202         }
 203
 204         if (ext2fs_is_fast_symlink(inode)) {
 205                 if (inode->i_flags & EXT4_EXTENTS_FL)
 206                         return 0;
 207                 buf = (char *)inode->i_block;
 208                 buflen = sizeof(inode->i_block);
 209         } else {
 210                 ext2_extent_handle_t    handle;
 211                 struct ext2_extent_info info;
 212                 struct ext2fs_extent    extent;
 213                 blk64_t blk;
 214                 int i;
 215
 216                 if (inode->i_flags & EXT4_EXTENTS_FL) {
 217                         if (ext2fs_extent_open2(fs, ino, inode, &handle))
 218                                 return 0;
 219                         if (ext2fs_extent_get_info(handle, &info) ||
 220                             (info.num_entries != 1) ||
 221                             (info.max_depth != 0)) {
 222                                 ext2fs_extent_free(handle);
 223                                 return 0;
 224                         }
 225                         if (ext2fs_extent_get(handle, EXT2_EXTENT_ROOT,
 226                                               &extent) ||
 227                             (extent.e_lblk != 0) ||
 228                             (extent.e_len != 1)) {
 229                                 ext2fs_extent_free(handle);
 230                                 return 0;
 231                         }
 232                         blk = extent.e_pblk;
 233                         ext2fs_extent_free(handle);
 234                 } else {
 235                         blk = inode->i_block[0];
 236
 237                         for (i = 1; i < EXT2_N_BLOCKS; i++)
 238                                 if (inode->i_block[i])
 239                                         return 0;
 240                 }
 241
 242                 if (blk < fs->super->s_first_data_block ||
 243                     blk >= ext2fs_blocks_count(fs->super))
 244                         return 0;
 245
 246                 if (io_channel_read_blk64(fs->io, blk, 1, buf))
 247                         return 0;
 248
 249                 buflen = fs->blocksize;
 250         }
 251
 252         if (inode->i_flags & EXT4_ENCRYPT_FL)
 253                 len = ext2fs_le16_to_cpu(*(__u16 *)buf) + 2;
 254         else
 255                 len = strnlen(buf, buflen);
 256
 257         if (len >= buflen)
 258                 return 0;
 259
 260         if (len != inode->i_size)
 261                 return 0;
 262         return 1;
 263 }
 264
 265 /*
 266  * If the extents or inlinedata flags are set on the inode, offer to clear 'em.
 267  */
 268 #define BAD_SPECIAL_FLAGS (EXT4_EXTENTS_FL | EXT4_INLINE_DATA_FL)
 269 static void check_extents_inlinedata(e2fsck_t ctx,
 270                                      struct problem_context *pctx)
 271 {
 272         if (!(pctx->inode->i_flags & BAD_SPECIAL_FLAGS))
 273                 return;
 274
 275         if (!fix_problem(ctx, PR_1_SPECIAL_EXTENTS_IDATA, pctx))
 276                 return;
 277
 278         pctx->inode->i_flags &= ~BAD_SPECIAL_FLAGS;
 279         e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1");
 280 }
 281 #undef BAD_SPECIAL_FLAGS
 282
 283 /*
 284  * If the immutable (or append-only) flag is set on the inode, offer
 285  * to clear it.
 286  */
 287 #define BAD_SPECIAL_FLAGS (EXT2_IMMUTABLE_FL | EXT2_APPEND_FL)
 288 static void check_immutable(e2fsck_t ctx, struct problem_context *pctx)
 289 {
 290         if (!(pctx->inode->i_flags & BAD_SPECIAL_FLAGS))
 291                 return;
 292
 293         if (!fix_problem(ctx, PR_1_SET_IMMUTABLE, pctx))
 294                 return;
 295
 296         pctx->inode->i_flags &= ~BAD_SPECIAL_FLAGS;
 297         e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1");
 298 }
 299
 300 /*
 301  * If device, fifo or socket, check size is zero -- if not offer to
 302  * clear it
 303  */
 304 static void check_size(e2fsck_t ctx, struct problem_context *pctx)
 305 {
 306         struct ext2_inode *inode = pctx->inode;
 307
 308         if (EXT2_I_SIZE(inode) == 0)
 309                 return;
 310
 311         if (!fix_problem(ctx, PR_1_SET_NONZSIZE, pctx))
 312                 return;
 313
 314         ext2fs_inode_size_set(ctx->fs, inode, 0);
 315         e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1");
 316 }
 317
 318 /*
 319  * For a given size, calculate how many blocks would be charged towards quota.
 320  */
 321 static blk64_t size_to_quota_blocks(ext2_filsys fs, size_t size)
 322 {
 323         blk64_t clusters;
 324
 325         clusters = DIV_ROUND_UP(size, fs->blocksize << fs->cluster_ratio_bits);
 326         return EXT2FS_C2B(fs, clusters);
 327 }
 328
 329 /*
 330  * Check validity of EA inode. Return 0 if EA inode is valid, otherwise return
 331  * the problem code.
 332  */
 333 static problem_t check_large_ea_inode(e2fsck_t ctx,
 334                                       struct ext2_ext_attr_entry *entry,
 335                                       struct problem_context *pctx,
 336                                       blk64_t *quota_blocks)
 337 {
 338         struct ext2_inode inode;
 339         __u32 hash;
 340         errcode_t retval;
 341
 342         /* Check if inode is within valid range */
 343         if ((entry->e_value_inum < EXT2_FIRST_INODE(ctx->fs->super)) ||
 344             (entry->e_value_inum > ctx->fs->super->s_inodes_count)) {
 345                 pctx->num = entry->e_value_inum;
 346                 return PR_1_ATTR_VALUE_EA_INODE;
 347         }
 348
 349         e2fsck_read_inode(ctx, entry->e_value_inum, &inode, "pass1");
 350
 351         retval = ext2fs_ext_attr_hash_entry2(ctx->fs, entry, NULL, &hash);
 352         if (retval) {
 353                 com_err("check_large_ea_inode", retval,
 354                         _("while hashing entry with e_value_inum = %u"),
 355                         entry->e_value_inum);
 356                 fatal_error(ctx, 0);
 357         }
 358
 359         if (hash == entry->e_hash) {
 360                 *quota_blocks = size_to_quota_blocks(ctx->fs,
 361                                                      entry->e_value_size);
 362         } else {
 363                 /* This might be an old Lustre-style ea_inode reference. */
 364                 if (inode.i_mtime == pctx->ino &&
 365                     inode.i_generation == pctx->inode->i_generation) {
 366                         *quota_blocks = 0;
 367                 } else {
 368                         /* If target inode is also missing EA_INODE flag,
 369                          * this is likely to be a bad reference.
 370                          */
 371                         if (!(inode.i_flags & EXT4_EA_INODE_FL)) {
 372                                 pctx->num = entry->e_value_inum;
 373                                 return PR_1_ATTR_VALUE_EA_INODE;
 374                         } else {
 375                                 pctx->num = entry->e_hash;
 376                                 return PR_1_ATTR_HASH;
 377                         }
 378                 }
 379         }
 380
 381         if (!(inode.i_flags & EXT4_EA_INODE_FL)) {
 382                 pctx->num = entry->e_value_inum;
 383                 if (fix_problem(ctx, PR_1_ATTR_SET_EA_INODE_FL, pctx)) {
 384                         inode.i_flags |= EXT4_EA_INODE_FL;
 385                         e2fsck_pass1_fix_lock(ctx);
 386                         ext2fs_write_inode(ctx->fs, entry->e_value_inum,
 387                                            &inode);
 388                         e2fsck_pass1_fix_unlock(ctx);
 389                 } else {
 390                         return PR_1_ATTR_NO_EA_INODE_FL;
 391                 }
 392         }
 393         return 0;
 394 }
 395
 396 static void inc_ea_inode_refs(e2fsck_t ctx, struct problem_context *pctx,
 397                               struct ext2_ext_attr_entry *first, void *end)
 398 {
 399         struct ext2_ext_attr_entry *entry;
 400
 401         for (entry = first;
 402              (void *)entry < end && !EXT2_EXT_IS_LAST_ENTRY(entry);
 403              entry = EXT2_EXT_ATTR_NEXT(entry)) {
 404                 if (!entry->e_value_inum)
 405                         continue;
 406                 if (!ctx->ea_inode_refs) {
 407                         pctx->errcode = ea_refcount_create(0,
 408                                                            &ctx->ea_inode_refs);
 409                         if (pctx->errcode) {
 410                                 pctx->num = 4;
 411                                 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
 412                                 ctx->flags |= E2F_FLAG_ABORT;
 413                                 return;
 414                         }
 415                 }
 416                 ea_refcount_increment(ctx->ea_inode_refs, entry->e_value_inum,
 417                                       0);
 418         }
 419 }
 420
 421 static void check_ea_in_inode(e2fsck_t ctx, struct problem_context *pctx,
 422                               struct ea_quota *ea_ibody_quota)
 423 {
 424         struct ext2_super_block *sb = ctx->fs->super;
 425         struct ext2_inode_large *inode;
 426         struct ext2_ext_attr_entry *entry;
 427         char *start, *header, *end;
 428         unsigned int storage_size, remain;
 429         problem_t problem = 0;
 430         region_t region = 0;
 431
 432         ea_ibody_quota->blocks = 0;
 433         ea_ibody_quota->inodes = 0;
 434
 435         inode = (struct ext2_inode_large *) pctx->inode;
 436         storage_size = EXT2_INODE_SIZE(ctx->fs->super) - EXT2_GOOD_OLD_INODE_SIZE -
 437                 inode->i_extra_isize;
 438         header = ((char *) inode) + EXT2_GOOD_OLD_INODE_SIZE +
 439                  inode->i_extra_isize;
 440         end = header + storage_size;
 441         start = header + sizeof(__u32);
 442         entry = (struct ext2_ext_attr_entry *) start;
 443
 444         /* scan all entry's headers first */
 445
 446         /* take finish entry 0UL into account */
 447         remain = storage_size - sizeof(__u32);
 448
 449         region = region_create(0, storage_size);
 450         if (!region) {
 451                 fix_problem(ctx, PR_1_EA_ALLOC_REGION_ABORT, pctx);
 452                 problem = 0;
 453                 ctx->flags |= E2F_FLAG_ABORT;
 454                 return;
 455         }
 456         if (region_allocate(region, 0, sizeof(__u32))) {
 457                 problem = PR_1_INODE_EA_ALLOC_COLLISION;
 458                 goto fix;
 459         }
 460
 461         while (remain >= sizeof(struct ext2_ext_attr_entry) &&
 462                !EXT2_EXT_IS_LAST_ENTRY(entry)) {
 463                 __u32 hash;
 464
 465                 if (region_allocate(region, (char *)entry - (char *)header,
 466                                     EXT2_EXT_ATTR_LEN(entry->e_name_len))) {
 467                         problem = PR_1_INODE_EA_ALLOC_COLLISION;
 468                         goto fix;
 469                 }
 470
 471                 /* header eats this space */
 472                 remain -= sizeof(struct ext2_ext_attr_entry);
 473
 474                 /* is attribute name valid? */
 475                 if (EXT2_EXT_ATTR_SIZE(entry->e_name_len) > remain) {
 476                         pctx->num = entry->e_name_len;
 477                         problem = PR_1_ATTR_NAME_LEN;
 478                         goto fix;
 479                 }
 480
 481                 /* attribute len eats this space */
 482                 remain -= EXT2_EXT_ATTR_SIZE(entry->e_name_len);
 483
 484                 if (entry->e_value_inum == 0) {
 485                         /* check value size */
 486                         if (entry->e_value_size > remain) {
 487                                 pctx->num = entry->e_value_size;
 488                                 problem = PR_1_ATTR_VALUE_SIZE;
 489                                 goto fix;
 490                         }
 491
 492                         if (entry->e_value_size &&
 493                             region_allocate(region,
 494                                             sizeof(__u32) + entry->e_value_offs,
 495                                             EXT2_EXT_ATTR_SIZE(
 496                                                 entry->e_value_size))) {
 497                                 problem = PR_1_INODE_EA_ALLOC_COLLISION;
 498                                 goto fix;
 499                         }
 500
 501                         hash = ext2fs_ext_attr_hash_entry(entry,
 502                                                           start + entry->e_value_offs);
 503
 504                         /* e_hash may be 0 in older inode's ea */
 505                         if (entry->e_hash != 0 && entry->e_hash != hash) {
 506                                 pctx->num = entry->e_hash;
 507                                 problem = PR_1_ATTR_HASH;
 508                                 goto fix;
 509                         }
 510                 } else {
 511                         blk64_t quota_blocks;
 512
 513                         problem = check_large_ea_inode(ctx, entry, pctx,
 514                                                        &quota_blocks);
 515                         if (problem != 0)
 516                                 goto fix;
 517
 518                         ea_ibody_quota->blocks += quota_blocks;
 519                         ea_ibody_quota->inodes++;
 520                 }
 521
 522                 /* If EA value is stored in external inode then it does not
 523                  * consume space here */
 524                 if (entry->e_value_inum == 0)
 525                         remain -= entry->e_value_size;
 526
 527                 entry = EXT2_EXT_ATTR_NEXT(entry);
 528         }
 529
 530         if (region_allocate(region, (char *)entry - (char *)header,
 531                             sizeof(__u32))) {
 532                 problem = PR_1_INODE_EA_ALLOC_COLLISION;
 533                 goto fix;
 534         }
 535 fix:
 536         if (region)
 537                 region_free(region);
 538         /*
 539          * it seems like a corruption. it's very unlikely we could repair
 540          * EA(s) in automatic fashion -bzzz
 541          */
 542         if (problem == 0 || !fix_problem(ctx, problem, pctx)) {
 543                 inc_ea_inode_refs(ctx, pctx,
 544                                   (struct ext2_ext_attr_entry *)start, end);
 545                 return;
 546         }
 547
 548         /* simply remove all possible EA(s) */
 549         *((__u32 *)header) = 0UL;
 550         e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
 551                                 EXT2_INODE_SIZE(sb), "pass1");
 552         ea_ibody_quota->blocks = 0;
 553         ea_ibody_quota->inodes = 0;
 554 }
 555
 556 static int check_inode_extra_negative_epoch(__u32 xtime, __u32 extra) {
 557         return (xtime & (1U << 31)) != 0 &&
 558                 (extra & EXT4_EPOCH_MASK) == EXT4_EPOCH_MASK;
 559 }
 560
 561 #define CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, xtime) \
 562         check_inode_extra_negative_epoch(inode->i_##xtime, \
 563                                          inode->i_##xtime##_extra)
 564
 565 /* When today's date is earlier than 2242, we assume that atimes,
 566  * ctimes, crtimes, and mtimes with years in the range 2310..2378 are
 567  * actually pre-1970 dates mis-encoded.
 568  */
 569 #define EXT4_EXTRA_NEGATIVE_DATE_CUTOFF 2 * (1LL << 32)
 570
 571 static void check_inode_extra_space(e2fsck_t ctx, struct problem_context *pctx,
 572                                     struct ea_quota *ea_ibody_quota)
 573 {
 574         struct ext2_super_block *sb = ctx->fs->super;
 575         struct ext2_inode_large *inode;
 576         __u32 *eamagic;
 577         int min, max;
 578
 579         ea_ibody_quota->blocks = 0;
 580         ea_ibody_quota->inodes = 0;
 581
 582         inode = (struct ext2_inode_large *) pctx->inode;
 583         if (EXT2_INODE_SIZE(sb) == EXT2_GOOD_OLD_INODE_SIZE) {
 584                 /* this isn't large inode. so, nothing to check */
 585                 return;
 586         }
 587
 588 #if 0
 589         printf("inode #%u, i_extra_size %d\n", pctx->ino,
 590                         inode->i_extra_isize);
 591 #endif
 592         /* i_extra_isize must cover i_extra_isize + i_checksum_hi at least */
 593         min = sizeof(inode->i_extra_isize) + sizeof(inode->i_checksum_hi);
 594         max = EXT2_INODE_SIZE(sb) - EXT2_GOOD_OLD_INODE_SIZE;
 595         /*
 596          * For now we will allow i_extra_isize to be 0, but really
 597          * implementations should never allow i_extra_isize to be 0
 598          */
 599         if (inode->i_extra_isize &&
 600             (inode->i_extra_isize < min || inode->i_extra_isize > max ||
 601              inode->i_extra_isize & 3)) {
 602                 if (!fix_problem(ctx, PR_1_EXTRA_ISIZE, pctx))
 603                         return;
 604                 if (inode->i_extra_isize < min || inode->i_extra_isize > max)
 605                         inode->i_extra_isize = sb->s_want_extra_isize;
 606                 else
 607                         inode->i_extra_isize = (inode->i_extra_isize + 3) & ~3;
 608                 e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
 609                                         EXT2_INODE_SIZE(sb), "pass1");
 610         }
 611
 612         /* check if there is no place for an EA header */
 613         if (inode->i_extra_isize >= max - sizeof(__u32))
 614                 return;
 615
 616         eamagic = (__u32 *) (((char *) inode) + EXT2_GOOD_OLD_INODE_SIZE +
 617                         inode->i_extra_isize);
 618         if (*eamagic == EXT2_EXT_ATTR_MAGIC) {
 619                 /* it seems inode has an extended attribute(s) in body */
 620                 check_ea_in_inode(ctx, pctx, ea_ibody_quota);
 621         }
 622
 623         /*
 624          * If the inode's extended atime (ctime, crtime, mtime) is stored in
 625          * the old, invalid format, repair it.
 626          */
 627         if (((sizeof(time_t) <= 4) ||
 628              (((sizeof(time_t) > 4) &&
 629                ctx->now < EXT4_EXTRA_NEGATIVE_DATE_CUTOFF))) &&
 630             (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, atime) ||
 631              CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, ctime) ||
 632              CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, crtime) ||
 633              CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, mtime))) {
 634
 635                 if (!fix_problem(ctx, PR_1_EA_TIME_OUT_OF_RANGE, pctx))
 636                         return;
 637
 638                 if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, atime))
 639                         inode->i_atime_extra &= ~EXT4_EPOCH_MASK;
 640                 if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, ctime))
 641                         inode->i_ctime_extra &= ~EXT4_EPOCH_MASK;
 642                 if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, crtime))
 643                         inode->i_crtime_extra &= ~EXT4_EPOCH_MASK;
 644                 if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, mtime))
 645                         inode->i_mtime_extra &= ~EXT4_EPOCH_MASK;
 646                 e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
 647                                         EXT2_INODE_SIZE(sb), "pass1");
 648         }
 649
 650 }
 651
 652 static _INLINE_ int is_blocks_used(e2fsck_t ctx, blk64_t block,
 653                                    unsigned int num)
 654 {
 655         int retval;
 656
 657         /* used to avoid duplicate output from below */
 658         retval = ext2fs_test_block_bitmap_range2_valid(ctx->block_found_map,
 659                                                        block, num);
 660         if (!retval)
 661                 return 0;
 662
 663         retval = ext2fs_test_block_bitmap_range2(ctx->block_found_map, block, num);
 664         if (retval) {
 665                 e2fsck_pass1_block_map_r_lock(ctx);
 666                 if (ctx->global_ctx)
 667                         retval = ext2fs_test_block_bitmap_range2(
 668                                         ctx->global_ctx->block_found_map, block, num);
 669                 e2fsck_pass1_block_map_r_unlock(ctx);
 670                 if (retval)
 671                         return 0;
 672         }
 673
 674         return 1;
 675 }
 676
 677 /*
 678  * Check to see if the inode might really be a directory, despite i_mode
 679  *
 680  * This is a lot of complexity for something for which I'm not really
 681  * convinced happens frequently in the wild.  If for any reason this
 682  * causes any problems, take this code out.
 683  * [tytso:20070331.0827EDT]
 684  */
 685 static void check_is_really_dir(e2fsck_t ctx, struct problem_context *pctx,
 686                                 char *buf)
 687 {
 688         struct ext2_inode *inode = pctx->inode;
 689         struct ext2_dir_entry   *dirent;
 690         errcode_t               retval;
 691         blk64_t                 blk;
 692         unsigned int            i, rec_len, not_device = 0;
 693         int                     extent_fs;
 694         int                     inlinedata_fs;
 695
 696         /*
 697          * If the mode looks OK, we believe it.  If the first block in
 698          * the i_block array is 0, this cannot be a directory. If the
 699          * inode is extent-mapped, it is still the case that the latter
 700          * cannot be 0 - the magic number in the extent header would make
 701          * it nonzero.
 702          */
 703         if (LINUX_S_ISDIR(inode->i_mode) || LINUX_S_ISREG(inode->i_mode) ||
 704             LINUX_S_ISLNK(inode->i_mode) || inode->i_block[0] == 0)
 705                 return;
 706
 707         /*
 708          * Check the block numbers in the i_block array for validity:
 709          * zero blocks are skipped (but the first one cannot be zero -
 710          * see above), other blocks are checked against the first and
 711          * max data blocks (from the the superblock) and against the
 712          * block bitmap. Any invalid block found means this cannot be
 713          * a directory.
 714          *
 715          * If there are non-zero blocks past the fourth entry, then
 716          * this cannot be a device file: we remember that for the next
 717          * check.
 718          *
 719          * For extent mapped files, we don't do any sanity checking:
 720          * just try to get the phys block of logical block 0 and run
 721          * with it.
 722          *
 723          * For inline data files, we just try to get the size of inline
 724          * data.  If it's true, we will treat it as a directory.
 725          */
 726
 727         extent_fs = ext2fs_has_feature_extents(ctx->fs->super);
 728         inlinedata_fs = ext2fs_has_feature_inline_data(ctx->fs->super);
 729         if (inlinedata_fs && (inode->i_flags & EXT4_INLINE_DATA_FL)) {
 730                 size_t size;
 731                 __u32 dotdot;
 732                 unsigned int rec_len2;
 733                 struct ext2_dir_entry de;
 734
 735                 if (ext2fs_inline_data_size(ctx->fs, pctx->ino, &size))
 736                         return;
 737                 /*
 738                  * If the size isn't a multiple of 4, it's probably not a
 739                  * directory??
 740                  */
 741                 if (size & 3)
 742                         return;
 743                 /*
 744                  * If the first 10 bytes don't look like a directory entry,
 745                  * it's probably not a directory.
 746                  */
 747                 memcpy(&dotdot, inode->i_block, sizeof(dotdot));
 748                 memcpy(&de, ((char *)inode->i_block) + EXT4_INLINE_DATA_DOTDOT_SIZE,
 749                        EXT2_DIR_REC_LEN(0));
 750                 dotdot = ext2fs_le32_to_cpu(dotdot);
 751                 de.inode = ext2fs_le32_to_cpu(de.inode);
 752                 de.rec_len = ext2fs_le16_to_cpu(de.rec_len);
 753                 ext2fs_get_rec_len(ctx->fs, &de, &rec_len2);
 754                 if (dotdot >= ctx->fs->super->s_inodes_count ||
 755                     (dotdot < EXT2_FIRST_INO(ctx->fs->super) &&
 756                      dotdot != EXT2_ROOT_INO) ||
 757                     de.inode >= ctx->fs->super->s_inodes_count ||
 758                     (de.inode < EXT2_FIRST_INO(ctx->fs->super) &&
 759                      de.inode != 0) ||
 760                     rec_len2 > EXT4_MIN_INLINE_DATA_SIZE -
 761                               EXT4_INLINE_DATA_DOTDOT_SIZE)
 762                         return;
 763                 /* device files never have a "system.data" entry */
 764                 goto isdir;
 765         } else if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) {
 766                 /* extent mapped */
 767                 if  (ext2fs_bmap2(ctx->fs, pctx->ino, inode, 0, 0, 0, 0,
 768                                  &blk))
 769                         return;
 770                 /* device files are never extent mapped */
 771                 not_device++;
 772         } else {
 773                 for (i=0; i < EXT2_N_BLOCKS; i++) {
 774                         blk = inode->i_block[i];
 775                         if (!blk)
 776                                 continue;
 777                         if (i >= 4)
 778                                 not_device++;
 779
 780                         if (blk < ctx->fs->super->s_first_data_block ||
 781                             blk >= ext2fs_blocks_count(ctx->fs->super) ||
 782                             is_blocks_used(ctx, blk, 1))
 783                                 return; /* Invalid block, can't be dir */
 784                 }
 785                 blk = inode->i_block[0];
 786         }
 787
 788         /*
 789          * If the mode says this is a device file and the i_links_count field
 790          * is sane and we have not ruled it out as a device file previously,
 791          * we declare it a device file, not a directory.
 792          */
 793         if ((LINUX_S_ISCHR(inode->i_mode) || LINUX_S_ISBLK(inode->i_mode)) &&
 794             (inode->i_links_count == 1) && !not_device)
 795                 return;
 796
 797         /* read the first block */
 798         ehandler_operation(_("reading directory block"));
 799         retval = ext2fs_read_dir_block4(ctx->fs, blk, buf, 0, pctx->ino);
 800         ehandler_operation(0);
 801         if (retval)
 802                 return;
 803
 804         dirent = (struct ext2_dir_entry *) buf;
 805         retval = ext2fs_get_rec_len(ctx->fs, dirent, &rec_len);
 806         if (retval)
 807                 return;
 808         if ((ext2fs_dirent_name_len(dirent) != 1) ||
 809             (dirent->name[0] != '.') ||
 810             (dirent->inode != pctx->ino) ||
 811             (rec_len < 12) ||
 812             (rec_len % 4) ||
 813             (rec_len >= ctx->fs->blocksize - 12))
 814                 return;
 815
 816         dirent = (struct ext2_dir_entry *) (buf + rec_len);
 817         retval = ext2fs_get_rec_len(ctx->fs, dirent, &rec_len);
 818         if (retval)
 819                 return;
 820         if ((ext2fs_dirent_name_len(dirent) != 2) ||
 821             (dirent->name[0] != '.') ||
 822             (dirent->name[1] != '.') ||
 823             (rec_len < 12) ||
 824             (rec_len % 4))
 825                 return;
 826
 827 isdir:
 828         if (fix_problem(ctx, PR_1_TREAT_AS_DIRECTORY, pctx)) {
 829                 inode->i_mode = (inode->i_mode & 07777) | LINUX_S_IFDIR;
 830                 e2fsck_write_inode_full(ctx, pctx->ino, inode,
 831                                         EXT2_INODE_SIZE(ctx->fs->super),
 832                                         "check_is_really_dir");
 833         }
 834 }
 835
 836 extern errcode_t e2fsck_setup_icount(e2fsck_t ctx, const char *icount_name,
 837                                      int flags, ext2_icount_t hint,
 838                                      ext2_icount_t *ret)
 839 {
 840         unsigned int            threshold;
 841         unsigned int            save_type;
 842         ext2_ino_t              num_dirs;
 843         errcode_t               retval;
 844         char                    *tdb_dir;
 845         int                     enable;
 846
 847         *ret = 0;
 848
 849         profile_get_string(ctx->profile, "scratch_files", "directory", 0, 0,
 850                            &tdb_dir);
 851         profile_get_uint(ctx->profile, "scratch_files",
 852                          "numdirs_threshold", 0, 0, &threshold);
 853         profile_get_boolean(ctx->profile, "scratch_files",
 854                             "icount", 0, 1, &enable);
 855
 856         retval = ext2fs_get_num_dirs(ctx->fs, &num_dirs);
 857         if (retval)
 858                 num_dirs = 1024;        /* Guess */
 859
 860         if (enable && tdb_dir && !access(tdb_dir, W_OK) &&
 861             (!threshold || num_dirs > threshold)) {
 862                 retval = ext2fs_create_icount_tdb(ctx->fs, tdb_dir,
 863                                                   flags, ret);
 864                 if (retval == 0)
 865                         return 0;
 866         }
 867         e2fsck_set_bitmap_type(ctx->fs, EXT2FS_BMAP64_RBTREE, icount_name,
 868                                &save_type);
 869         if (ctx->options & E2F_OPT_ICOUNT_FULLMAP)
 870                 flags |= EXT2_ICOUNT_OPT_FULLMAP;
 871         retval = ext2fs_create_icount2(ctx->fs, flags, 0, hint, ret);
 872         ctx->fs->default_bitmap_type = save_type;
 873         return retval;
 874 }
 875
 876 static errcode_t recheck_bad_inode_checksum(ext2_filsys fs, ext2_ino_t ino,
 877                                             e2fsck_t ctx,
 878                                             struct problem_context *pctx)
 879 {
 880         errcode_t retval;
 881         struct ext2_inode_large inode;
 882
 883         /*
 884          * Reread inode.  If we don't see checksum error, then this inode
 885          * has been fixed elsewhere.
 886          */
 887         ctx->stashed_ino = 0;
 888         retval = ext2fs_read_inode_full(fs, ino, (struct ext2_inode *)&inode,
 889                                         sizeof(inode));
 890         if (retval && retval != EXT2_ET_INODE_CSUM_INVALID)
 891                 return retval;
 892         if (!retval)
 893                 return 0;
 894
 895         /*
 896          * Checksum still doesn't match.  That implies that the inode passes
 897          * all the sanity checks, so maybe the checksum is simply corrupt.
 898          * See if the user will go for fixing that.
 899          */
 900         if (!fix_problem(ctx, PR_1_INODE_ONLY_CSUM_INVALID, pctx))
 901                 return 0;
 902
 903
 904         e2fsck_pass1_fix_lock(ctx);
 905         retval = ext2fs_write_inode_full(fs, ino, (struct ext2_inode *)&inode,
 906                                          sizeof(inode));
 907         e2fsck_pass1_fix_unlock(ctx);
 908         return retval;
 909 }
 910
 911 static void reserve_block_for_root_repair(e2fsck_t ctx)
 912 {
 913         blk64_t         blk = 0;
 914         errcode_t       err;
 915         ext2_filsys     fs = ctx->fs;
 916
 917         ctx->root_repair_block = 0;
 918         if (ext2fs_test_inode_bitmap2(ctx->inode_used_map, EXT2_ROOT_INO))
 919                 return;
 920
 921         err = ext2fs_new_block2(fs, 0, ctx->block_found_map, &blk);
 922         if (err)
 923                 return;
 924         ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
 925         ctx->root_repair_block = blk;
 926 }
 927
 928 static void reserve_block_for_lnf_repair(e2fsck_t ctx)
 929 {
 930         blk64_t         blk = 0;
 931         errcode_t       err;
 932         ext2_filsys     fs = ctx->fs;
 933         static const char name[] = "lost+found";
 934         ext2_ino_t      ino;
 935
 936         ctx->lnf_repair_block = 0;
 937         if (!ext2fs_lookup(fs, EXT2_ROOT_INO, name, sizeof(name)-1, 0, &ino))
 938                 return;
 939
 940         err = ext2fs_new_block2(fs, 0, ctx->block_found_map, &blk);
 941         if (err)
 942                 return;
 943         ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
 944         ctx->lnf_repair_block = blk;
 945         return;
 946 }
 947
 948 static errcode_t get_inline_data_ea_size(ext2_filsys fs, ext2_ino_t ino,
 949                                          size_t *sz)
 950 {
 951         void *p;
 952         struct ext2_xattr_handle *handle;
 953         errcode_t retval;
 954
 955         retval = ext2fs_xattrs_open(fs, ino, &handle);
 956         if (retval)
 957                 return retval;
 958
 959         retval = ext2fs_xattrs_read(handle);
 960         if (retval)
 961                 goto err;
 962
 963         retval = ext2fs_xattr_get(handle, "system.data", &p, sz);
 964         if (retval)
 965                 goto err;
 966         ext2fs_free_mem(&p);
 967 err:
 968         (void) ext2fs_xattrs_close(&handle);
 969         return retval;
 970 }
 971
 972 static void finish_processing_inode(e2fsck_t ctx, ext2_ino_t ino,
 973                                     struct problem_context *pctx,
 974                                     int failed_csum)
 975 {
 976         if (!failed_csum)
 977                 return;
 978
 979         /*
 980          * If the inode failed the checksum and the user didn't
 981          * clear the inode, test the checksum again -- if it still
 982          * fails, ask the user if the checksum should be corrected.
 983          */
 984         pctx->errcode = recheck_bad_inode_checksum(ctx->fs, ino, ctx, pctx);
 985         if (pctx->errcode)
 986                 ctx->flags |= E2F_FLAG_ABORT;
 987 }
 988 #define FINISH_INODE_LOOP(ctx, ino, pctx, failed_csum) \
 989         do { \
 990                 finish_processing_inode((ctx), (ino), (pctx), (failed_csum)); \
 991                 if ((ctx)->flags & E2F_FLAG_ABORT) \
 992                         return; \
 993         } while (0)
 994
 995 static int could_be_block_map(ext2_filsys fs, struct ext2_inode *inode)
 996 {
 997         __u32 x;
 998         int i;
 999
1000         for (i = 0; i < EXT2_N_BLOCKS; i++) {
1001                 x = inode->i_block[i];
1002 #ifdef WORDS_BIGENDIAN
1003                 x = ext2fs_swab32(x);
1004 #endif
1005                 if (x >= ext2fs_blocks_count(fs->super))
1006                         return 0;
1007         }
1008
1009         return 1;
1010 }
1011
1012 /*
1013  * Figure out what to do with an inode that has both extents and inline data
1014  * inode flags set.  Returns -1 if we decide to erase the inode, 0 otherwise.
1015  */
1016 static int fix_inline_data_extents_file(e2fsck_t ctx,
1017                                         ext2_ino_t ino,
1018                                         struct ext2_inode *inode,
1019                                         int inode_size,
1020                                         struct problem_context *pctx)
1021 {
1022         size_t max_inline_ea_size;
1023         ext2_filsys fs = ctx->fs;
1024         int dirty = 0;
1025
1026         /* Both feature flags not set?  Just run the regular checks */
1027         if (!ext2fs_has_feature_extents(fs->super) &&
1028             !ext2fs_has_feature_inline_data(fs->super))
1029                 return 0;
1030
1031         /* Clear both flags if it's a special file */
1032         if (LINUX_S_ISCHR(inode->i_mode) ||
1033             LINUX_S_ISBLK(inode->i_mode) ||
1034             LINUX_S_ISFIFO(inode->i_mode) ||
1035             LINUX_S_ISSOCK(inode->i_mode)) {
1036                 check_extents_inlinedata(ctx, pctx);
1037                 return 0;
1038         }
1039
1040         /* If it looks like an extent tree, try to clear inlinedata */
1041         if (ext2fs_extent_header_verify(inode->i_block,
1042                                  sizeof(inode->i_block)) == 0 &&
1043             fix_problem(ctx, PR_1_CLEAR_INLINE_DATA_FOR_EXTENT, pctx)) {
1044                 inode->i_flags &= ~EXT4_INLINE_DATA_FL;
1045                 dirty = 1;
1046                 goto out;
1047         }
1048
1049         /* If it looks short enough to be inline data, try to clear extents */
1050         if (inode_size > EXT2_GOOD_OLD_INODE_SIZE)
1051                 max_inline_ea_size = inode_size -
1052                                      (EXT2_GOOD_OLD_INODE_SIZE +
1053                                       ((struct ext2_inode_large *)inode)->i_extra_isize);
1054         else
1055                 max_inline_ea_size = 0;
1056         if (EXT2_I_SIZE(inode) <
1057             EXT4_MIN_INLINE_DATA_SIZE + max_inline_ea_size &&
1058             fix_problem(ctx, PR_1_CLEAR_EXTENT_FOR_INLINE_DATA, pctx)) {
1059                 inode->i_flags &= ~EXT4_EXTENTS_FL;
1060                 dirty = 1;
1061                 goto out;
1062         }
1063
1064         /*
1065          * Too big for inline data, but no evidence of extent tree -
1066          * maybe it's a block map file?  If the mappings all look valid?
1067          */
1068         if (could_be_block_map(fs, inode) &&
1069             fix_problem(ctx, PR_1_CLEAR_EXTENT_INLINE_DATA_FLAGS, pctx)) {
1070 #ifdef WORDS_BIGENDIAN
1071                 int i;
1072
1073                 for (i = 0; i < EXT2_N_BLOCKS; i++)
1074                         inode->i_block[i] = ext2fs_swab32(inode->i_block[i]);
1075 #endif
1076
1077                 inode->i_flags &= ~(EXT4_EXTENTS_FL | EXT4_INLINE_DATA_FL);
1078                 dirty = 1;
1079                 goto out;
1080         }
1081
1082         /* Oh well, just clear the busted inode. */
1083         if (fix_problem(ctx, PR_1_CLEAR_EXTENT_INLINE_DATA_INODE, pctx)) {
1084                 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1085                 return -1;
1086         }
1087
1088 out:
1089         if (dirty)
1090                 e2fsck_write_inode(ctx, ino, inode, "pass1");
1091
1092         return 0;
1093 }
1094
1095 static void pass1_readahead(e2fsck_t ctx, dgrp_t *group, ext2_ino_t *next_ino)
1096 {
1097         ext2_ino_t inodes_in_group = 0, inodes_per_block, inodes_per_buffer;
1098         dgrp_t start = *group, grp, grp_end = ctx->fs->group_desc_count;
1099         blk64_t blocks_to_read = 0;
1100         errcode_t err = EXT2_ET_INVALID_ARGUMENT;
1101
1102 #ifdef HAVE_PTHREAD
1103         if (ctx->fs->fs_num_threads > 1)
1104                 grp_end = ctx->thread_info.et_group_end;
1105 #endif
1106         if (ctx->readahead_kb == 0)
1107                 goto out;
1108
1109         /* Keep iterating groups until we have enough to readahead */
1110         inodes_per_block = EXT2_INODES_PER_BLOCK(ctx->fs->super);
1111         for (grp = start; grp < grp_end; grp++) {
1112                 if (ext2fs_bg_flags_test(ctx->fs, grp, EXT2_BG_INODE_UNINIT))
1113                         continue;
1114                 inodes_in_group = ctx->fs->super->s_inodes_per_group -
1115                                         ext2fs_bg_itable_unused(ctx->fs, grp);
1116                 blocks_to_read += (inodes_in_group + inodes_per_block - 1) /
1117                                         inodes_per_block;
1118                 if (blocks_to_read * ctx->fs->blocksize >
1119                     ctx->readahead_kb * 1024)
1120                         break;
1121         }
1122
1123         err = e2fsck_readahead(ctx->fs, E2FSCK_READA_ITABLE, start,
1124                                grp - start + 1);
1125         if (err == EAGAIN) {
1126                 ctx->readahead_kb /= 2;
1127                 err = 0;
1128         }
1129
1130 out:
1131         if (err) {
1132                 /* Error; disable itable readahead */
1133                 *group = ctx->fs->group_desc_count;
1134                 *next_ino = ctx->fs->super->s_inodes_count;
1135         } else {
1136                 /*
1137                  * Don't do more readahead until we've reached the first inode
1138                  * of the last inode scan buffer block for the last group.
1139                  */
1140                 *group = grp + 1;
1141                 inodes_per_buffer = (ctx->inode_buffer_blocks ?
1142                                      ctx->inode_buffer_blocks :
1143                                      EXT2_INODE_SCAN_DEFAULT_BUFFER_BLOCKS) *
1144                                     ctx->fs->blocksize /
1145                                     EXT2_INODE_SIZE(ctx->fs->super);
1146                 inodes_in_group--;
1147                 *next_ino = inodes_in_group -
1148                             (inodes_in_group % inodes_per_buffer) + 1 +
1149                             (grp * ctx->fs->super->s_inodes_per_group);
1150         }
1151 }
1152
1153 /*
1154  * Check if the passed ino is one of the used superblock quota inodes.
1155  *
1156  * Before the quota inodes were journaled, older superblock quota inodes
1157  * were just regular files in the filesystem and not reserved inodes.  This
1158  * checks if the passed ino is one of the s_*_quota_inum superblock fields,
1159  * which may not always be the same as the EXT4_*_QUOTA_INO fields.
1160  */
1161 static int quota_inum_is_super(struct ext2_super_block *sb, ext2_ino_t ino)
1162 {
1163         enum quota_type qtype;
1164
1165         for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1166                 if (*quota_sb_inump(sb, qtype) == ino)
1167                         return 1;
1168
1169         return 0;
1170 }
1171
1172 /*
1173  * Check if the passed ino is one of the reserved quota inodes.
1174  * This checks if the inode number is one of the reserved EXT4_*_QUOTA_INO
1175  * inodes.  These inodes may or may not be in use by the quota feature.
1176  */
1177 static int quota_inum_is_reserved(ext2_filsys fs, ext2_ino_t ino)
1178 {
1179         enum quota_type qtype;
1180
1181         for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1182                 if (quota_type2inum(qtype, fs->super) == ino)
1183                         return 1;
1184
1185         return 0;
1186 }
1187
1188 static int e2fsck_should_abort(e2fsck_t ctx)
1189 {
1190         e2fsck_t global_ctx;
1191
1192         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1193                 return 1;
1194
1195         if (ctx->global_ctx) {
1196                 global_ctx = ctx->global_ctx;
1197                 if (global_ctx->flags & E2F_FLAG_SIGNAL_MASK)
1198                         return 1;
1199         }
1200         return 0;
1201 }
1202
1203 static void init_ext2_max_sizes()
1204 {
1205         int     i;
1206         __u64   max_sizes;
1207
1208         /*
1209          * Init ext2_max_sizes which will be immutable and shared between
1210          * threads
1211          */
1212 #define EXT2_BPP(bits) (1ULL << ((bits) - 2))
1213
1214         for (i = EXT2_MIN_BLOCK_LOG_SIZE; i <= EXT2_MAX_BLOCK_LOG_SIZE; i++) {
1215                 max_sizes = EXT2_NDIR_BLOCKS + EXT2_BPP(i);
1216                 max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i);
1217                 max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i) * EXT2_BPP(i);
1218                 max_sizes = (max_sizes * (1UL << i));
1219                 ext2_max_sizes[i - EXT2_MIN_BLOCK_LOG_SIZE] = max_sizes;
1220         }
1221 #undef EXT2_BPP
1222 }
1223
1224 #ifdef HAVE_PTHREAD
1225 /* TODO: tdb needs to be handled properly for multiple threads*/
1226 static int multiple_threads_supported(e2fsck_t ctx)
1227 {
1228 #ifdef  CONFIG_TDB
1229         unsigned int            threshold;
1230         ext2_ino_t              num_dirs;
1231         errcode_t               retval;
1232         char                    *tdb_dir;
1233         int                     enable;
1234
1235         profile_get_string(ctx->profile, "scratch_files", "directory", 0, 0,
1236                            &tdb_dir);
1237         profile_get_uint(ctx->profile, "scratch_files",
1238                          "numdirs_threshold", 0, 0, &threshold);
1239         profile_get_boolean(ctx->profile, "scratch_files",
1240                             "icount", 0, 1, &enable);
1241
1242         retval = ext2fs_get_num_dirs(ctx->fs, &num_dirs);
1243         if (retval)
1244                 num_dirs = 1024;        /* Guess */
1245
1246         /* tdb is unsupported now */
1247         if (enable && tdb_dir && !access(tdb_dir, W_OK) &&
1248             (!threshold || num_dirs > threshold))
1249                 return 0;
1250 #endif
1251         return 1;
1252 }
1253
1254 /**
1255  * Even though we could specify number of threads,
1256  * but it might be more than the whole filesystem
1257  * block groups, correct it here.
1258  */
1259 static void e2fsck_pass1_set_thread_num(e2fsck_t ctx)
1260 {
1261         unsigned flexbg_size = 1;
1262         ext2_filsys fs = ctx->fs;
1263         int num_threads = ctx->fs_num_threads;
1264         int max_threads;
1265
1266         if (num_threads < 1) {
1267                 num_threads = 1;
1268                 goto out;
1269         }
1270
1271         if (!multiple_threads_supported(ctx)) {
1272                 num_threads = 1;
1273                 fprintf(stderr, "Fall through single thread for pass1 "
1274                         "because tdb could not handle properly\n");
1275                 goto out;
1276         }
1277
1278         if (ext2fs_has_feature_flex_bg(fs->super))
1279                 flexbg_size = 1 << fs->super->s_log_groups_per_flex;
1280         max_threads = fs->group_desc_count / flexbg_size;
1281         if (max_threads == 0)
1282                 max_threads = 1;
1283
1284         if (num_threads > max_threads) {
1285                 fprintf(stderr, "Use max possible thread num: %d instead\n",
1286                                 max_threads);
1287                 num_threads = max_threads;
1288         }
1289 out:
1290         ctx->fs_num_threads = num_threads;
1291         ctx->fs->fs_num_threads = num_threads;
1292 }
1293 #endif
1294
1295 /*
1296  * We need call mark_table_blocks() before multiple
1297  * thread start, since all known system blocks should be
1298  * marked and checked later.
1299  */
1300 static errcode_t e2fsck_pass1_prepare(e2fsck_t ctx)
1301 {
1302         struct problem_context pctx;
1303         ext2_filsys fs = ctx->fs;
1304         unsigned long long readahead_kb;
1305
1306         init_ext2_max_sizes();
1307 #ifdef HAVE_PTHREAD
1308         e2fsck_pass1_set_thread_num(ctx);
1309 #endif
1310         /* If we can do readahead, figure out how many groups to pull in. */
1311         if (!e2fsck_can_readahead(ctx->fs))
1312                 ctx->readahead_kb = 0;
1313         else if (ctx->readahead_kb == ~0ULL)
1314                 ctx->readahead_kb = e2fsck_guess_readahead(ctx->fs);
1315
1316 #ifdef HAVE_PTHREAD
1317         /* don't use more than 1/10 of memory for threads checking */
1318         readahead_kb = get_memory_size() / (10 * ctx->fs_num_threads);
1319         /* maybe better disable RA if this is too small? */
1320         if (ctx->readahead_kb > readahead_kb)
1321                 ctx->readahead_kb = readahead_kb;
1322 #endif
1323         clear_problem_context(&pctx);
1324         if (!(ctx->options & E2F_OPT_PREEN))
1325                 fix_problem(ctx, PR_1_PASS_HEADER, &pctx);
1326
1327         pctx.errcode = e2fsck_allocate_subcluster_bitmap(ctx->fs,
1328                         _("in-use block map"), EXT2FS_BMAP64_RBTREE,
1329                         "block_found_map", &ctx->block_found_map);
1330         if (pctx.errcode) {
1331                 pctx.num = 1;
1332                 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
1333                 ctx->flags |= E2F_FLAG_ABORT;
1334                 return pctx.errcode;
1335         }
1336         pctx.errcode = e2fsck_allocate_block_bitmap(ctx->fs,
1337                         _("metadata block map"), EXT2FS_BMAP64_RBTREE,
1338                         "block_metadata_map", &ctx->block_metadata_map);
1339         if (pctx.errcode) {
1340                 pctx.num = 1;
1341                 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
1342                 ctx->flags |= E2F_FLAG_ABORT;
1343                 return pctx.errcode;
1344         }
1345
1346         mark_table_blocks(ctx);
1347         pctx.errcode = ext2fs_convert_subcluster_bitmap(ctx->fs,
1348                                                 &ctx->block_found_map);
1349         if (pctx.errcode) {
1350                 fix_problem(ctx, PR_1_CONVERT_SUBCLUSTER, &pctx);
1351                 ctx->flags |= E2F_FLAG_ABORT;
1352                 return pctx.errcode;
1353         }
1354
1355         pctx.errcode = e2fsck_allocate_block_bitmap(ctx->fs,
1356                         _("multiply claimed block map"),
1357                         EXT2FS_BMAP64_RBTREE, "block_dup_map",
1358                         &ctx->block_dup_map);
1359         if (pctx.errcode) {
1360                 pctx.num = 3;
1361                 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR,
1362                             &pctx);
1363                 /* Should never get here */
1364                 ctx->flags |= E2F_FLAG_ABORT;
1365                 return pctx.errcode;
1366         }
1367
1368         if (ext2fs_has_feature_mmp(fs->super) &&
1369             fs->super->s_mmp_block > fs->super->s_first_data_block &&
1370             fs->super->s_mmp_block < ext2fs_blocks_count(fs->super))
1371                 ext2fs_mark_block_bitmap2(ctx->block_found_map,
1372                                           fs->super->s_mmp_block);
1373 #ifdef  HAVE_PTHREAD
1374         pthread_mutex_init(&ctx->fs_fix_mutex, NULL);
1375         pthread_rwlock_init(&ctx->fs_block_map_rwlock, NULL);
1376 #endif
1377
1378         return 0;
1379 }
1380
1381 static void e2fsck_pass1_post(e2fsck_t ctx)
1382 {
1383         struct problem_context pctx;
1384         ext2_filsys fs = ctx->fs;
1385         char *block_buf;
1386
1387         if (e2fsck_should_abort(ctx))
1388                 return;
1389
1390         block_buf = (char *)e2fsck_allocate_memory(ctx, ctx->fs->blocksize * 3,
1391                                               "block interate buffer");
1392         reserve_block_for_root_repair(ctx);
1393         reserve_block_for_lnf_repair(ctx);
1394
1395         /*
1396          * If any extended attribute blocks' reference counts need to
1397          * be adjusted, either up (ctx->refcount_extra), or down
1398          * (ctx->refcount), then fix them.
1399          */
1400         if (ctx->refcount) {
1401                 adjust_extattr_refcount(ctx, ctx->refcount, block_buf, -1);
1402                 ea_refcount_free(ctx->refcount);
1403                 ctx->refcount = 0;
1404         }
1405         if (ctx->refcount_extra) {
1406                 adjust_extattr_refcount(ctx, ctx->refcount_extra,
1407                                         block_buf, +1);
1408                 ea_refcount_free(ctx->refcount_extra);
1409                 ctx->refcount_extra = 0;
1410         }
1411
1412         if (ctx->invalid_bitmaps)
1413                 handle_fs_bad_blocks(ctx);
1414
1415         /* We don't need the block_ea_map any more */
1416         if (ctx->block_ea_map) {
1417                 ext2fs_free_block_bitmap(ctx->block_ea_map);
1418                 ctx->block_ea_map = 0;
1419         }
1420
1421         if (ctx->flags & E2F_FLAG_RESIZE_INODE) {
1422                 struct ext2_inode *inode;
1423                 int inode_size = EXT2_INODE_SIZE(fs->super);
1424                 inode = e2fsck_allocate_memory(ctx, inode_size,
1425                                                "scratch inode");
1426
1427                 clear_problem_context(&pctx);
1428                 pctx.errcode = ext2fs_create_resize_inode(fs);
1429                 if (pctx.errcode) {
1430                         if (!fix_problem(ctx, PR_1_RESIZE_INODE_CREATE,
1431                                          &pctx)) {
1432                                 ctx->flags |= E2F_FLAG_ABORT;
1433                                 ext2fs_free_mem(&inode);
1434                                 ext2fs_free_mem(&block_buf);
1435                                 return;
1436                         }
1437                         pctx.errcode = 0;
1438                 }
1439                 if (!pctx.errcode) {
1440                         e2fsck_read_inode(ctx, EXT2_RESIZE_INO, inode,
1441                                           "recreate inode");
1442                         inode->i_mtime = ctx->now;
1443                         e2fsck_write_inode(ctx, EXT2_RESIZE_INO, inode,
1444                                            "recreate inode");
1445                 }
1446                 ctx->flags &= ~E2F_FLAG_RESIZE_INODE;
1447                 ext2fs_free_mem(&inode);
1448         }
1449
1450         if (ctx->flags & E2F_FLAG_RESTART) {
1451                 ext2fs_free_mem(&block_buf);
1452                 return;
1453         }
1454
1455         if (ctx->block_dup_map) {
1456                 if (!(ctx->flags & E2F_FLAG_DUP_BLOCK)) {
1457                         ext2fs_free_mem(&block_buf);
1458                         return;
1459                 }
1460                 if (ctx->options & E2F_OPT_PREEN) {
1461                         clear_problem_context(&pctx);
1462                         fix_problem(ctx, PR_1_DUP_BLOCKS_PREENSTOP, &pctx);
1463                 }
1464                 e2fsck_pass1_dupblocks(ctx, block_buf);
1465                 ext2fs_free_mem(&block_buf);
1466                 ctx->flags &= ~E2F_FLAG_DUP_BLOCK;
1467         }
1468
1469         ctx->flags |= E2F_FLAG_ALLOC_OK;
1470 }
1471
1472
1473 void e2fsck_pass1_run(e2fsck_t ctx)
1474 {
1475         int     i;
1476         ext2_filsys fs = ctx->fs;
1477         ext2_ino_t      ino = 0;
1478         struct ext2_inode *inode = NULL;
1479         ext2_inode_scan scan = NULL;
1480         char            *block_buf = NULL;
1481 #ifdef RESOURCE_TRACK
1482         struct resource_track   rtrack;
1483 #endif
1484         unsigned char   frag, fsize;
1485         struct          problem_context pctx;
1486         struct          scan_callback_struct scan_struct;
1487         struct ext2_super_block *sb = ctx->fs->super;
1488         const char      *old_op;
1489         const char      *eop_next_inode = _("getting next inode from scan");
1490         int             imagic_fs, extent_fs, inlinedata_fs, casefold_fs;
1491         int             low_dtime_check = 1;
1492         unsigned int    inode_size = EXT2_INODE_SIZE(fs->super);
1493         unsigned int    bufsize;
1494         int             failed_csum = 0;
1495         ext2_ino_t      ino_threshold = 0;
1496         dgrp_t          ra_group = 0;
1497         struct ea_quota ea_ibody_quota;
1498         struct process_inode_block *inodes_to_process;
1499         int             process_inode_count;
1500
1501         init_resource_track(&rtrack, ctx->fs->io);
1502         clear_problem_context(&pctx);
1503
1504         pass1_readahead(ctx, &ra_group, &ino_threshold);
1505         if (ext2fs_has_feature_dir_index(fs->super) &&
1506             !(ctx->options & E2F_OPT_NO)) {
1507                 if (ext2fs_u32_list_create(&ctx->dirs_to_hash, 50))
1508                         ctx->dirs_to_hash = 0;
1509         }
1510
1511 #ifdef MTRACE
1512         mtrace_print("Pass 1");
1513 #endif
1514
1515         imagic_fs = ext2fs_has_feature_imagic_inodes(sb);
1516         extent_fs = ext2fs_has_feature_extents(sb);
1517         inlinedata_fs = ext2fs_has_feature_inline_data(sb);
1518         casefold_fs = ext2fs_has_feature_casefold(sb);
1519
1520         /*
1521          * Allocate bitmaps structures
1522          */
1523         pctx.errcode = e2fsck_allocate_inode_bitmap(fs, _("in-use inode map"),
1524                                                     EXT2FS_BMAP64_RBTREE,
1525                                                     "inode_used_map",
1526                                                     &ctx->inode_used_map);
1527         if (pctx.errcode) {
1528                 pctx.num = 1;
1529                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1530                 ctx->flags |= E2F_FLAG_ABORT;
1531                 return;
1532         }
1533         pctx.errcode = e2fsck_allocate_inode_bitmap(fs,
1534                         _("directory inode map"),
1535                         ctx->global_ctx ? EXT2FS_BMAP64_RBTREE :
1536                         EXT2FS_BMAP64_AUTODIR,
1537                         "inode_dir_map", &ctx->inode_dir_map);
1538         if (pctx.errcode) {
1539                 pctx.num = 2;
1540                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1541                 ctx->flags |= E2F_FLAG_ABORT;
1542                 return;
1543         }
1544         pctx.errcode = e2fsck_allocate_inode_bitmap(fs,
1545                         _("regular file inode map"), EXT2FS_BMAP64_RBTREE,
1546                         "inode_reg_map", &ctx->inode_reg_map);
1547         if (pctx.errcode) {
1548                 pctx.num = 6;
1549                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1550                 ctx->flags |= E2F_FLAG_ABORT;
1551                 return;
1552         }
1553         if (casefold_fs) {
1554                 pctx.errcode =
1555                         e2fsck_allocate_inode_bitmap(fs,
1556                                                      _("inode casefold map"),
1557                                                      EXT2FS_BMAP64_RBTREE,
1558                                                      "inode_casefold_map",
1559                                                      &ctx->inode_casefold_map);
1560                 if (pctx.errcode) {
1561                         pctx.num = 1;
1562                         fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1563                         ctx->flags |= E2F_FLAG_ABORT;
1564                         return;
1565                 }
1566         }
1567         pctx.errcode = e2fsck_setup_icount(ctx, "inode_link_info", 0, NULL,
1568                                            &ctx->inode_link_info);
1569         if (pctx.errcode) {
1570                 fix_problem(ctx, PR_1_ALLOCATE_ICOUNT, &pctx);
1571                 ctx->flags |= E2F_FLAG_ABORT;
1572                 return;
1573         }
1574         bufsize = inode_size;
1575         if (bufsize < sizeof(struct ext2_inode_large))
1576                 bufsize = sizeof(struct ext2_inode_large);
1577         inode = (struct ext2_inode *)
1578                 e2fsck_allocate_memory(ctx, bufsize, "scratch inode");
1579
1580         inodes_to_process = (struct process_inode_block *)
1581                 e2fsck_allocate_memory(ctx,
1582                                        (ctx->process_inode_size *
1583                                         sizeof(struct process_inode_block)),
1584                                        "array of inodes to process");
1585         process_inode_count = 0;
1586
1587         pctx.errcode = ext2fs_init_dblist(fs, 0);
1588         if (pctx.errcode) {
1589                 fix_problem(ctx, PR_1_ALLOCATE_DBCOUNT, &pctx);
1590                 ctx->flags |= E2F_FLAG_ABORT;
1591                 goto endit;
1592         }
1593
1594         /*
1595          * If the last orphan field is set, clear it, since the pass1
1596          * processing will automatically find and clear the orphans.
1597          * In the future, we may want to try using the last_orphan
1598          * linked list ourselves, but for now, we clear it so that the
1599          * ext3 mount code won't get confused.
1600          */
1601         if (!(ctx->options & E2F_OPT_READONLY)) {
1602                 if (fs->super->s_last_orphan) {
1603                         fs->super->s_last_orphan = 0;
1604                         ext2fs_mark_super_dirty(fs);
1605                 }
1606         }
1607
1608         block_buf = (char *) e2fsck_allocate_memory(ctx, fs->blocksize * 3,
1609                                                     "block interate buffer");
1610         if (EXT2_INODE_SIZE(fs->super) == EXT2_GOOD_OLD_INODE_SIZE)
1611                 e2fsck_use_inode_shortcuts(ctx, 1);
1612         e2fsck_intercept_block_allocations(ctx);
1613         old_op = ehandler_operation(_("opening inode scan"));
1614         pctx.errcode = ext2fs_open_inode_scan(fs, ctx->inode_buffer_blocks,
1615                                               &scan);
1616         ehandler_operation(old_op);
1617         if (pctx.errcode) {
1618                 fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx);
1619                 ctx->flags |= E2F_FLAG_ABORT;
1620                 goto endit;
1621         }
1622         ext2fs_inode_scan_flags(scan, EXT2_SF_SKIP_MISSING_ITABLE |
1623                                       EXT2_SF_WARN_GARBAGE_INODES, 0);
1624         ctx->stashed_inode = inode;
1625         scan_struct.ctx = ctx;
1626         scan_struct.block_buf = block_buf;
1627         scan_struct.inodes_to_process = inodes_to_process;
1628         scan_struct.process_inode_count = &process_inode_count;
1629         ext2fs_set_inode_callback(scan, scan_callback, &scan_struct);
1630         if (ctx->progress && ((ctx->progress)(ctx, 1, 0,
1631                                               ctx->fs->group_desc_count)))
1632                 goto endit;
1633         if ((fs->super->s_wtime &&
1634              fs->super->s_wtime < fs->super->s_inodes_count) ||
1635             (fs->super->s_mtime &&
1636              fs->super->s_mtime < fs->super->s_inodes_count) ||
1637             (fs->super->s_mkfs_time &&
1638              fs->super->s_mkfs_time < fs->super->s_inodes_count))
1639                 low_dtime_check = 0;
1640
1641         /* Set up ctx->lost_and_found if possible */
1642         (void) e2fsck_get_lost_and_found(ctx, 0);
1643
1644 #ifdef HAVE_PTHREAD
1645         if (ctx->global_ctx) {
1646                 if (ctx->options & E2F_OPT_DEBUG &&
1647                     ctx->options & E2F_OPT_MULTITHREAD)
1648                         fprintf(stderr, "thread %d jumping to group %d\n",
1649                                         ctx->thread_info.et_thread_index,
1650                                         ctx->thread_info.et_group_start);
1651                 pctx.errcode = ext2fs_inode_scan_goto_blockgroup(scan,
1652                                         ctx->thread_info.et_group_start);
1653                 if (pctx.errcode) {
1654                         fix_problem(ctx, PR_1_PASS_HEADER, &pctx);
1655                         ctx->flags |= E2F_FLAG_ABORT;
1656                         goto endit;
1657                 }
1658         }
1659 #endif
1660
1661         while (1) {
1662                 if (ino % (fs->super->s_inodes_per_group * 4) == 1) {
1663                         if (e2fsck_mmp_update(fs))
1664                                 fatal_error(ctx, 0);
1665                 }
1666                 old_op = ehandler_operation(eop_next_inode);
1667                 pctx.errcode = ext2fs_get_next_inode_full(scan, &ino,
1668                                                           inode, inode_size);
1669                 if (ino > ino_threshold)
1670                         pass1_readahead(ctx, &ra_group, &ino_threshold);
1671                 ehandler_operation(old_op);
1672                 if (e2fsck_should_abort(ctx))
1673                         goto endit;
1674                 if (pctx.errcode == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE) {
1675                         /*
1676                          * If badblocks says badblocks is bad, offer to clear
1677                          * the list, update the in-core bb list, and restart
1678                          * the inode scan.
1679                          */
1680                         if (ino == EXT2_BAD_INO &&
1681                             fix_problem(ctx, PR_1_BADBLOCKS_IN_BADBLOCKS,
1682                                         &pctx)) {
1683                                 errcode_t err;
1684
1685                                 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1686                                 ext2fs_badblocks_list_free(ctx->fs->badblocks);
1687                                 ctx->fs->badblocks = NULL;
1688                                 err = ext2fs_read_bb_inode(ctx->fs,
1689                                                         &ctx->fs->badblocks);
1690                                 if (err) {
1691                                         fix_problem(ctx, PR_1_ISCAN_ERROR,
1692                                                     &pctx);
1693                                         ctx->flags |= E2F_FLAG_ABORT;
1694                                 } else
1695                                         ctx->flags |= E2F_FLAG_RESTART;
1696                                 goto endit;
1697                         }
1698                         if (!ctx->inode_bb_map)
1699                                 alloc_bb_map(ctx);
1700                         ext2fs_mark_inode_bitmap2(ctx->inode_bb_map, ino);
1701                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1702                         continue;
1703                 }
1704                 if (pctx.errcode == EXT2_ET_SCAN_FINISHED)
1705                         break;
1706                 if (pctx.errcode &&
1707                     pctx.errcode != EXT2_ET_INODE_CSUM_INVALID &&
1708                     pctx.errcode != EXT2_ET_INODE_IS_GARBAGE) {
1709                         fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx);
1710                         ctx->flags |= E2F_FLAG_ABORT;
1711                         goto endit;
1712                 }
1713                 if (!ino)
1714                         break;
1715 #ifdef HAVE_PTHREAD
1716                 if (ctx->global_ctx)
1717                         ctx->thread_info.et_inode_number++;
1718 #endif
1719                 pctx.ino = ino;
1720                 pctx.inode = inode;
1721                 ctx->stashed_ino = ino;
1722
1723                 /* Clear trashed inode? */
1724                 if (pctx.errcode == EXT2_ET_INODE_IS_GARBAGE &&
1725                     inode->i_links_count > 0 &&
1726                     fix_problem(ctx, PR_1_INODE_IS_GARBAGE, &pctx)) {
1727                         pctx.errcode = 0;
1728                         e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1729                 }
1730                 failed_csum = pctx.errcode != 0;
1731
1732                 /*
1733                  * Check for inodes who might have been part of the
1734                  * orphaned list linked list.  They should have gotten
1735                  * dealt with by now, unless the list had somehow been
1736                  * corrupted.
1737                  *
1738                  * FIXME: In the future, inodes which are still in use
1739                  * (and which are therefore) pending truncation should
1740                  * be handled specially.  Right now we just clear the
1741                  * dtime field, and the normal e2fsck handling of
1742                  * inodes where i_size and the inode blocks are
1743                  * inconsistent is to fix i_size, instead of releasing
1744                  * the extra blocks.  This won't catch the inodes that
1745                  * was at the end of the orphan list, but it's better
1746                  * than nothing.  The right answer is that there
1747                  * shouldn't be any bugs in the orphan list handling.  :-)
1748                  */
1749                 if (inode->i_dtime && low_dtime_check &&
1750                     inode->i_dtime < ctx->fs->super->s_inodes_count) {
1751                         if (fix_problem(ctx, PR_1_LOW_DTIME, &pctx)) {
1752                                 inode->i_dtime = inode->i_links_count ?
1753                                         0 : ctx->now;
1754                                 e2fsck_write_inode(ctx, ino, inode,
1755                                                    "pass1");
1756                                 failed_csum = 0;
1757                         }
1758                 }
1759
1760                 if (inode->i_links_count) {
1761                         pctx.errcode = ext2fs_icount_store(ctx->inode_link_info,
1762                                            ino, inode->i_links_count);
1763                         if (pctx.errcode) {
1764                                 pctx.num = inode->i_links_count;
1765                                 fix_problem(ctx, PR_1_ICOUNT_STORE, &pctx);
1766                                 ctx->flags |= E2F_FLAG_ABORT;
1767                                 goto endit;
1768                         }
1769                 } else if ((ino >= EXT2_FIRST_INODE(fs->super)) &&
1770                            !quota_inum_is_reserved(fs, ino)) {
1771                         if (!inode->i_dtime && inode->i_mode) {
1772                                 if (fix_problem(ctx,
1773                                             PR_1_ZERO_DTIME, &pctx)) {
1774                                         inode->i_dtime = ctx->now;
1775                                         e2fsck_write_inode(ctx, ino, inode,
1776                                                            "pass1");
1777                                         failed_csum = 0;
1778                                 }
1779                         }
1780                         FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1781                         continue;
1782                 }
1783
1784                 if ((inode->i_flags & EXT4_CASEFOLD_FL) &&
1785                     ((!LINUX_S_ISDIR(inode->i_mode) &&
1786                       fix_problem(ctx, PR_1_CASEFOLD_NONDIR, &pctx)) ||
1787                      (!casefold_fs &&
1788                       fix_problem(ctx, PR_1_CASEFOLD_FEATURE, &pctx)))) {
1789                         inode->i_flags &= ~EXT4_CASEFOLD_FL;
1790                         e2fsck_write_inode(ctx, ino, inode, "pass1");
1791                 }
1792
1793                 /* Conflicting inlinedata/extents inode flags? */
1794                 if ((inode->i_flags & EXT4_INLINE_DATA_FL) &&
1795                     (inode->i_flags & EXT4_EXTENTS_FL)) {
1796                         int res = fix_inline_data_extents_file(ctx, ino, inode,
1797                                                                inode_size,
1798                                                                &pctx);
1799                         if (res < 0) {
1800                                 /* skip FINISH_INODE_LOOP */
1801                                 continue;
1802                         }
1803                 }
1804
1805                 /* Test for incorrect inline_data flags settings. */
1806                 if ((inode->i_flags & EXT4_INLINE_DATA_FL) && !inlinedata_fs &&
1807                     (ino >= EXT2_FIRST_INODE(fs->super))) {
1808                         size_t size = 0;
1809
1810                         pctx.errcode = get_inline_data_ea_size(fs, ino, &size);
1811                         if (!pctx.errcode &&
1812                             fix_problem(ctx, PR_1_INLINE_DATA_FEATURE, &pctx)) {
1813                                 e2fsck_pass1_fix_lock(ctx);
1814                                 ext2fs_set_feature_inline_data(sb);
1815                                 ext2fs_mark_super_dirty(fs);
1816                                 e2fsck_pass1_fix_unlock(ctx);
1817                                 inlinedata_fs = 1;
1818                         } else if (fix_problem(ctx, PR_1_INLINE_DATA_SET, &pctx)) {
1819                                 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1820                                 /* skip FINISH_INODE_LOOP */
1821                                 continue;
1822                         }
1823                 }
1824
1825                 /* Test for inline data flag but no attr */
1826                 if ((inode->i_flags & EXT4_INLINE_DATA_FL) && inlinedata_fs &&
1827                     (ino >= EXT2_FIRST_INODE(fs->super))) {
1828                         size_t size = 0;
1829                         errcode_t err;
1830                         int flags;
1831
1832                         flags = fs->flags;
1833                         if (failed_csum)
1834                                 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
1835                         err = get_inline_data_ea_size(fs, ino, &size);
1836                         fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
1837                                     (fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
1838
1839                         switch (err) {
1840                         case 0:
1841                                 /* Everything is awesome... */
1842                                 break;
1843                         case EXT2_ET_BAD_EA_BLOCK_NUM:
1844                         case EXT2_ET_BAD_EA_HASH:
1845                         case EXT2_ET_BAD_EA_HEADER:
1846                         case EXT2_ET_EA_BAD_NAME_LEN:
1847                         case EXT2_ET_EA_BAD_VALUE_SIZE:
1848                         case EXT2_ET_EA_KEY_NOT_FOUND:
1849                         case EXT2_ET_EA_NO_SPACE:
1850                         case EXT2_ET_MISSING_EA_FEATURE:
1851                         case EXT2_ET_INLINE_DATA_CANT_ITERATE:
1852                         case EXT2_ET_INLINE_DATA_NO_BLOCK:
1853                         case EXT2_ET_INLINE_DATA_NO_SPACE:
1854                         case EXT2_ET_NO_INLINE_DATA:
1855                         case EXT2_ET_EXT_ATTR_CSUM_INVALID:
1856                         case EXT2_ET_EA_BAD_VALUE_OFFSET:
1857                         case EXT2_ET_EA_INODE_CORRUPTED:
1858                                 /* broken EA or no system.data EA; truncate */
1859                                 if (fix_problem(ctx, PR_1_INLINE_DATA_NO_ATTR,
1860                                                 &pctx)) {
1861                                         err = ext2fs_inode_size_set(fs, inode, 0);
1862                                         if (err) {
1863                                                 pctx.errcode = err;
1864                                                 ctx->flags |= E2F_FLAG_ABORT;
1865                                                 goto endit;
1866                                         }
1867                                         inode->i_flags &= ~EXT4_INLINE_DATA_FL;
1868                                         memset(&inode->i_block, 0,
1869                                                sizeof(inode->i_block));
1870                                         e2fsck_write_inode(ctx, ino, inode,
1871                                                            "pass1");
1872                                         failed_csum = 0;
1873                                 }
1874                                 break;
1875                         default:
1876                                 /* Some other kind of non-xattr error? */
1877                                 pctx.errcode = err;
1878                                 ctx->flags |= E2F_FLAG_ABORT;
1879                                 goto endit;
1880                         }
1881                 }
1882
1883                 /*
1884                  * Test for incorrect extent flag settings.
1885                  *
1886                  * On big-endian machines we must be careful:
1887                  * When the inode is read, the i_block array is not swapped
1888                  * if the extent flag is set.  Therefore if we are testing
1889                  * for or fixing a wrongly-set flag, we must potentially
1890                  * (un)swap before testing, or after fixing.
1891                  */
1892
1893                 /*
1894                  * In this case the extents flag was set when read, so
1895                  * extent_header_verify is ok.  If the inode is cleared,
1896                  * no need to swap... so no extra swapping here.
1897                  */
1898                 if ((inode->i_flags & EXT4_EXTENTS_FL) && !extent_fs &&
1899                     (inode->i_links_count || (ino == EXT2_BAD_INO) ||
1900                      (ino == EXT2_ROOT_INO) || (ino == EXT2_JOURNAL_INO))) {
1901                         if ((ext2fs_extent_header_verify(inode->i_block,
1902                                                  sizeof(inode->i_block)) == 0) &&
1903                             fix_problem(ctx, PR_1_EXTENT_FEATURE, &pctx)) {
1904                                 e2fsck_pass1_fix_lock(ctx);
1905                                 ext2fs_set_feature_extents(sb);
1906                                 ext2fs_mark_super_dirty(fs);
1907                                 extent_fs = 1;
1908                                 e2fsck_pass1_fix_unlock(ctx);
1909                         } else if (fix_problem(ctx, PR_1_EXTENTS_SET, &pctx)) {
1910                         clear_inode:
1911                                 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1912                                 if (ino == EXT2_BAD_INO)
1913                                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map,
1914                                                                  ino);
1915                                 /* skip FINISH_INODE_LOOP */
1916                                 continue;
1917                         }
1918                 }
1919
1920                 /*
1921                  * For big-endian machines:
1922                  * If the inode didn't have the extents flag set when it
1923                  * was read, then the i_blocks array was swapped.  To test
1924                  * as an extents header, we must swap it back first.
1925                  * IF we then set the extents flag, the entire i_block
1926                  * array must be un/re-swapped to make it proper extents data.
1927                  */
1928                 if (extent_fs && !(inode->i_flags & EXT4_EXTENTS_FL) &&
1929                     (inode->i_links_count || (ino == EXT2_BAD_INO) ||
1930                      (ino == EXT2_ROOT_INO) || (ino == EXT2_JOURNAL_INO)) &&
1931                     (LINUX_S_ISREG(inode->i_mode) ||
1932                      LINUX_S_ISDIR(inode->i_mode))) {
1933                         void *ehp;
1934 #ifdef WORDS_BIGENDIAN
1935                         __u32 tmp_block[EXT2_N_BLOCKS];
1936
1937                         for (i = 0; i < EXT2_N_BLOCKS; i++)
1938                                 tmp_block[i] = ext2fs_swab32(inode->i_block[i]);
1939                         ehp = tmp_block;
1940 #else
1941                         ehp = inode->i_block;
1942 #endif
1943                         if ((ext2fs_extent_header_verify(ehp,
1944                                          sizeof(inode->i_block)) == 0) &&
1945                             (fix_problem(ctx, PR_1_UNSET_EXTENT_FL, &pctx))) {
1946                                 inode->i_flags |= EXT4_EXTENTS_FL;
1947 #ifdef WORDS_BIGENDIAN
1948                                 memcpy(inode->i_block, tmp_block,
1949                                        sizeof(inode->i_block));
1950 #endif
1951                                 e2fsck_write_inode(ctx, ino, inode, "pass1");
1952                                 failed_csum = 0;
1953                         }
1954                 }
1955
1956                 if (ino == EXT2_BAD_INO) {
1957                         struct process_block_struct pb;
1958
1959                         if ((failed_csum || inode->i_mode || inode->i_uid ||
1960                              inode->i_gid || inode->i_links_count ||
1961                              (inode->i_flags & EXT4_INLINE_DATA_FL) ||
1962                              inode->i_file_acl) &&
1963                             fix_problem(ctx, PR_1_INVALID_BAD_INODE, &pctx)) {
1964                                 memset(inode, 0, sizeof(struct ext2_inode));
1965                                 e2fsck_write_inode(ctx, ino, inode,
1966                                                    "clear bad inode");
1967                                 failed_csum = 0;
1968                         }
1969
1970                         e2fsck_pass1_block_map_r_lock(ctx);
1971                         pctx.errcode = ext2fs_copy_bitmap(ctx->global_ctx ?
1972                                         ctx->global_ctx->block_found_map :
1973                                         ctx->block_found_map, &pb.fs_meta_blocks);
1974                         e2fsck_pass1_block_map_r_unlock(ctx);
1975                         if (pctx.errcode) {
1976                                 pctx.num = 4;
1977                                 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
1978                                 ctx->flags |= E2F_FLAG_ABORT;
1979                                 goto endit;
1980                         }
1981                         pb.ino = EXT2_BAD_INO;
1982                         pb.num_blocks = pb.last_block = 0;
1983                         pb.last_db_block = -1;
1984                         pb.num_illegal_blocks = 0;
1985                         pb.suppress = 0; pb.clear = 0; pb.is_dir = 0;
1986                         pb.is_reg = 0; pb.fragmented = 0; pb.bbcheck = 0;
1987                         pb.inode = inode;
1988                         pb.pctx = &pctx;
1989                         pb.ctx = ctx;
1990                         pctx.errcode = ext2fs_block_iterate3(fs, ino, 0,
1991                                      block_buf, process_bad_block, &pb);
1992                         ext2fs_free_block_bitmap(pb.fs_meta_blocks);
1993                         if (pctx.errcode) {
1994                                 fix_problem(ctx, PR_1_BLOCK_ITERATE, &pctx);
1995                                 ctx->flags |= E2F_FLAG_ABORT;
1996                                 goto endit;
1997                         }
1998                         if (pb.bbcheck)
1999                                 if (!fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK_PROMPT, &pctx)) {
2000                                 ctx->flags |= E2F_FLAG_ABORT;
2001                                 goto endit;
2002                         }
2003                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
2004                         clear_problem_context(&pctx);
2005                         FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
2006                         continue;
2007                 } else if (ino == EXT2_ROOT_INO) {
2008                         /*
2009                          * Make sure the root inode is a directory; if
2010                          * not, offer to clear it.  It will be
2011                          * regenerated in pass #3.
2012                          */
2013                         if (!LINUX_S_ISDIR(inode->i_mode)) {
2014                                 if (fix_problem(ctx, PR_1_ROOT_NO_DIR, &pctx))
2015                                         goto clear_inode;
2016                         }
2017                         /*
2018                          * If dtime is set, offer to clear it.  mke2fs
2019                          * version 0.2b created filesystems with the
2020                          * dtime field set for the root and lost+found
2021                          * directories.  We won't worry about
2022                          * /lost+found, since that can be regenerated
2023                          * easily.  But we will fix the root directory
2024                          * as a special case.
2025                          */
2026                         if (inode->i_dtime && inode->i_links_count) {
2027                                 if (fix_problem(ctx, PR_1_ROOT_DTIME, &pctx)) {
2028                                         inode->i_dtime = 0;
2029                                         e2fsck_write_inode(ctx, ino, inode,
2030                                                            "pass1");
2031                                         failed_csum = 0;
2032                                 }
2033                         }
2034                 } else if (ino == EXT2_JOURNAL_INO) {
2035                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
2036                         if (fs->super->s_journal_inum == EXT2_JOURNAL_INO) {
2037                                 if (!LINUX_S_ISREG(inode->i_mode) &&
2038                                     fix_problem(ctx, PR_1_JOURNAL_BAD_MODE,
2039                                                 &pctx)) {
2040                                         inode->i_mode = LINUX_S_IFREG;
2041                                         e2fsck_write_inode(ctx, ino, inode,
2042                                                            "pass1");
2043                                         failed_csum = 0;
2044                                 }
2045                                 check_blocks(ctx, &pctx, block_buf, NULL);
2046                                 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
2047                                 continue;
2048                         }
2049                         if ((inode->i_links_count ||
2050                              inode->i_blocks || inode->i_block[0]) &&
2051                             fix_problem(ctx, PR_1_JOURNAL_INODE_NOT_CLEAR,
2052                                         &pctx)) {
2053                                 memset(inode, 0, inode_size);
2054                                 ext2fs_icount_store(ctx->inode_link_info,
2055                                                     ino, 0);
2056                                 e2fsck_write_inode_full(ctx, ino, inode,
2057                                                         inode_size, "pass1");
2058                                 failed_csum = 0;
2059                         }
2060                 } else if (quota_inum_is_reserved(fs, ino)) {
2061                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
2062                         if (ext2fs_has_feature_quota(fs->super) &&
2063                             quota_inum_is_super(fs->super, ino)) {
2064                                 if (!LINUX_S_ISREG(inode->i_mode) &&
2065                                     fix_problem(ctx, PR_1_QUOTA_BAD_MODE,
2066                                                         &pctx)) {
2067                                         inode->i_mode = LINUX_S_IFREG;
2068                                         e2fsck_write_inode(ctx, ino, inode,
2069                                                         "pass1");
2070                                         failed_csum = 0;
2071                                 }
2072                                 check_blocks(ctx, &pctx, block_buf, NULL);
2073                                 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
2074                                 continue;
2075                         }
2076                         if ((inode->i_links_count ||
2077                              inode->i_blocks || inode->i_block[0]) &&
2078                             fix_problem(ctx, PR_1_QUOTA_INODE_NOT_CLEAR,
2079                                         &pctx)) {
2080                                 memset(inode, 0, inode_size);
2081                                 ext2fs_icount_store(ctx->inode_link_info,
2082                                                     ino, 0);
2083                                 e2fsck_write_inode_full(ctx, ino, inode,
2084                                                         inode_size, "pass1");
2085                                 failed_csum = 0;
2086                         }
2087                 } else if (ino < EXT2_FIRST_INODE(fs->super)) {
2088                         problem_t problem = 0;
2089
2090                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
2091                         if (ino == EXT2_BOOT_LOADER_INO) {
2092                                 if (LINUX_S_ISDIR(inode->i_mode))
2093                                         problem = PR_1_RESERVED_BAD_MODE;
2094                         } else if (ino == EXT2_RESIZE_INO) {
2095                                 if (inode->i_mode &&
2096                                     !LINUX_S_ISREG(inode->i_mode))
2097                                         problem = PR_1_RESERVED_BAD_MODE;
2098                         } else {
2099                                 if (inode->i_mode != 0)
2100                                         problem = PR_1_RESERVED_BAD_MODE;
2101                         }
2102                         if (problem) {
2103                                 if (fix_problem(ctx, problem, &pctx)) {
2104                                         inode->i_mode = 0;
2105                                         e2fsck_write_inode(ctx, ino, inode,
2106                                                            "pass1");
2107                                         failed_csum = 0;
2108                                 }
2109                         }
2110                         check_blocks(ctx, &pctx, block_buf, NULL);
2111                         FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
2112                         continue;
2113                 }
2114
2115                 if (!inode->i_links_count) {
2116                         FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
2117                         continue;
2118                 }
2119                 /*
2120                  * n.b.  0.3c ext2fs code didn't clear i_links_count for
2121                  * deleted files.  Oops.
2122                  *
2123                  * Since all new ext2 implementations get this right,
2124                  * we now assume that the case of non-zero
2125                  * i_links_count and non-zero dtime means that we
2126                  * should keep the file, not delete it.
2127                  *
2128                  */
2129                 if (inode->i_dtime) {
2130                         if (fix_problem(ctx, PR_1_SET_DTIME, &pctx)) {
2131                                 inode->i_dtime = 0;
2132                                 e2fsck_write_inode(ctx, ino, inode, "pass1");
2133                                 failed_csum = 0;
2134                         }
2135                 }
2136
2137                 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
2138                 switch (fs->super->s_creator_os) {
2139                     case EXT2_OS_HURD:
2140                         frag = inode->osd2.hurd2.h_i_frag;
2141                         fsize = inode->osd2.hurd2.h_i_fsize;
2142                         break;
2143                     default:
2144                         frag = fsize = 0;
2145                 }
2146
2147                 if (inode->i_faddr || frag || fsize ||
2148                     (!ext2fs_has_feature_largedir(fs->super) &&
2149                     (LINUX_S_ISDIR(inode->i_mode) && inode->i_size_high)))
2150                         mark_inode_bad(ctx, ino);
2151                 if ((fs->super->s_creator_os != EXT2_OS_HURD) &&
2152                     !ext2fs_has_feature_64bit(fs->super) &&
2153                     inode->osd2.linux2.l_i_file_acl_high != 0)
2154                         mark_inode_bad(ctx, ino);
2155                 if ((fs->super->s_creator_os != EXT2_OS_HURD) &&
2156                     !ext2fs_has_feature_huge_file(fs->super) &&
2157                     (inode->osd2.linux2.l_i_blocks_hi != 0))
2158                         mark_inode_bad(ctx, ino);
2159                 if (inode->i_flags & EXT2_IMAGIC_FL) {
2160                         if (imagic_fs) {
2161                                 if (!ctx->inode_imagic_map)
2162                                         alloc_imagic_map(ctx);
2163                                 ext2fs_mark_inode_bitmap2(ctx->inode_imagic_map,
2164                                                          ino);
2165                         } else {
2166                                 if (fix_problem(ctx, PR_1_SET_IMAGIC, &pctx)) {
2167                                         inode->i_flags &= ~EXT2_IMAGIC_FL;
2168                                         e2fsck_write_inode(ctx, ino,
2169                                                            inode, "pass1");
2170                                         failed_csum = 0;
2171                                 }
2172                         }
2173                 }
2174
2175                 check_inode_extra_space(ctx, &pctx, &ea_ibody_quota);
2176                 check_is_really_dir(ctx, &pctx, block_buf);
2177
2178                 /*
2179                  * ext2fs_inode_has_valid_blocks2 does not actually look
2180                  * at i_block[] values, so not endian-sensitive here.
2181                  */
2182                 if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL) &&
2183                     LINUX_S_ISLNK(inode->i_mode) &&
2184                     !ext2fs_inode_has_valid_blocks2(fs, inode) &&
2185                     fix_problem(ctx, PR_1_FAST_SYMLINK_EXTENT_FL, &pctx)) {
2186                         inode->i_flags &= ~EXT4_EXTENTS_FL;
2187                         e2fsck_write_inode(ctx, ino, inode, "pass1");
2188                         failed_csum = 0;
2189                 }
2190
2191                 if ((inode->i_flags & EXT4_ENCRYPT_FL) &&
2192                     add_encrypted_file(ctx, &pctx) < 0)
2193                         goto clear_inode;
2194
2195                 if (casefold_fs && inode->i_flags & EXT4_CASEFOLD_FL)
2196                         ext2fs_mark_inode_bitmap2(ctx->inode_casefold_map, ino);
2197
2198                 if (LINUX_S_ISDIR(inode->i_mode)) {
2199                         ext2fs_mark_inode_bitmap2(ctx->inode_dir_map, ino);
2200                         e2fsck_add_dir_info(ctx, ino, 0);
2201                         ctx->fs_directory_count++;
2202                         if (inode->i_flags & EXT4_CASEFOLD_FL)
2203                                 add_casefolded_dir(ctx, ino);
2204                 } else if (LINUX_S_ISREG (inode->i_mode)) {
2205                         ext2fs_mark_inode_bitmap2(ctx->inode_reg_map, ino);
2206                         ctx->fs_regular_count++;
2207                 } else if (LINUX_S_ISCHR (inode->i_mode) &&
2208                            e2fsck_pass1_check_device_inode(fs, inode)) {
2209                         check_extents_inlinedata(ctx, &pctx);
2210                         check_immutable(ctx, &pctx);
2211                         check_size(ctx, &pctx);
2212                         ctx->fs_chardev_count++;
2213                 } else if (LINUX_S_ISBLK (inode->i_mode) &&
2214                            e2fsck_pass1_check_device_inode(fs, inode)) {
2215                         check_extents_inlinedata(ctx, &pctx);
2216                         check_immutable(ctx, &pctx);
2217                         check_size(ctx, &pctx);
2218                         ctx->fs_blockdev_count++;
2219                 } else if (LINUX_S_ISLNK (inode->i_mode) &&
2220                            e2fsck_pass1_check_symlink(fs, ino, inode,
2221                                                       block_buf)) {
2222                         check_immutable(ctx, &pctx);
2223                         ctx->fs_symlinks_count++;
2224                         if (inode->i_flags & EXT4_INLINE_DATA_FL) {
2225                                 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
2226                                 continue;
2227                         } else if (ext2fs_is_fast_symlink(inode)) {
2228                                 ctx->fs_fast_symlinks_count++;
2229                                 check_blocks(ctx, &pctx, block_buf,
2230                                              &ea_ibody_quota);
2231                                 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
2232                                 continue;
2233                         }
2234                 }
2235                 else if (LINUX_S_ISFIFO (inode->i_mode) &&
2236                          e2fsck_pass1_check_device_inode(fs, inode)) {
2237                         check_extents_inlinedata(ctx, &pctx);
2238                         check_immutable(ctx, &pctx);
2239                         check_size(ctx, &pctx);
2240                         ctx->fs_fifo_count++;
2241                 } else if ((LINUX_S_ISSOCK (inode->i_mode)) &&
2242                            e2fsck_pass1_check_device_inode(fs, inode)) {
2243                         check_extents_inlinedata(ctx, &pctx);
2244                         check_immutable(ctx, &pctx);
2245                         check_size(ctx, &pctx);
2246                         ctx->fs_sockets_count++;
2247                 } else
2248                         mark_inode_bad(ctx, ino);
2249                 if (!(inode->i_flags & EXT4_EXTENTS_FL) &&
2250                     !(inode->i_flags & EXT4_INLINE_DATA_FL)) {
2251                         if (inode->i_block[EXT2_IND_BLOCK])
2252                                 ctx->fs_ind_count++;
2253                         if (inode->i_block[EXT2_DIND_BLOCK])
2254                                 ctx->fs_dind_count++;
2255                         if (inode->i_block[EXT2_TIND_BLOCK])
2256                                 ctx->fs_tind_count++;
2257                 }
2258                 if (!(inode->i_flags & EXT4_EXTENTS_FL) &&
2259                     !(inode->i_flags & EXT4_INLINE_DATA_FL) &&
2260                     (inode->i_block[EXT2_IND_BLOCK] ||
2261                      inode->i_block[EXT2_DIND_BLOCK] ||
2262                      inode->i_block[EXT2_TIND_BLOCK] ||
2263                      ext2fs_file_acl_block(fs, inode))) {
2264                         struct process_inode_block *itp;
2265
2266                         itp = &inodes_to_process[process_inode_count];
2267                         itp->ino = ino;
2268                         itp->ea_ibody_quota = ea_ibody_quota;
2269                         if (inode_size < sizeof(struct ext2_inode_large))
2270                                 memcpy(&itp->inode, inode, inode_size);
2271                         else
2272                                 memcpy(&itp->inode, inode, sizeof(itp->inode));
2273                         process_inode_count++;
2274                 } else
2275                         check_blocks(ctx, &pctx, block_buf, &ea_ibody_quota);
2276
2277                 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
2278
2279                 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
2280                         goto endit;
2281
2282                 if (process_inode_count >= ctx->process_inode_size) {
2283                         process_inodes(ctx, block_buf, inodes_to_process,
2284                                        &process_inode_count);
2285
2286                         if (e2fsck_should_abort(ctx))
2287                                 goto endit;
2288                 }
2289         }
2290         process_inodes(ctx, block_buf, inodes_to_process,
2291                        &process_inode_count);
2292         ext2fs_close_inode_scan(scan);
2293         scan = NULL;
2294
2295         if (ctx->ea_block_quota_blocks) {
2296                 ea_refcount_free(ctx->ea_block_quota_blocks);
2297                 ctx->ea_block_quota_blocks = 0;
2298         }
2299
2300         if (ctx->ea_block_quota_inodes) {
2301                 ea_refcount_free(ctx->ea_block_quota_inodes);
2302                 ctx->ea_block_quota_inodes = 0;
2303         }
2304
2305         /* We don't need the encryption policy => ID map any more */
2306         destroy_encryption_policy_map(ctx);
2307
2308         if (ctx->flags & E2F_FLAG_RESTART) {
2309                 /*
2310                  * Only the master copy of the superblock and block
2311                  * group descriptors are going to be written during a
2312                  * restart, so set the superblock to be used to be the
2313                  * master superblock.
2314                  */
2315                 ctx->use_superblock = 0;
2316                 goto endit;
2317         }
2318
2319         if (ctx->large_dirs && !ext2fs_has_feature_largedir(ctx->fs->super)) {
2320                 ext2_filsys fs = ctx->fs;
2321
2322                 if (fix_problem(ctx, PR_2_FEATURE_LARGE_DIRS, &pctx)) {
2323                         ext2fs_set_feature_largedir(fs->super);
2324                         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
2325                         ext2fs_mark_super_dirty(fs);
2326                 }
2327                 if (fs->super->s_rev_level == EXT2_GOOD_OLD_REV &&
2328                     fix_problem(ctx, PR_1_FS_REV_LEVEL, &pctx)) {
2329                         ext2fs_update_dynamic_rev(fs);
2330                         ext2fs_mark_super_dirty(fs);
2331                 }
2332         }
2333
2334         ctx->flags |= E2F_FLAG_ALLOC_OK;
2335         ext2fs_free_mem(&inodes_to_process);
2336 endit:
2337         e2fsck_use_inode_shortcuts(ctx, 0);
2338         ext2fs_free_mem(&inodes_to_process);
2339         inodes_to_process = 0;
2340
2341         if (scan)
2342                 ext2fs_close_inode_scan(scan);
2343         if (block_buf)
2344                 ext2fs_free_mem(&block_buf);
2345         if (inode)
2346                 ext2fs_free_mem(&inode);
2347
2348         /*
2349          * The l+f inode may have been cleared, so zap it now and
2350          * later passes will recalculate it if necessary
2351          */
2352         ctx->lost_and_found = 0;
2353
2354         if ((ctx->flags & E2F_FLAG_SIGNAL_MASK) == 0)
2355                 print_resource_track(ctx, _("Pass 1"), &rtrack, ctx->fs->io);
2356         else
2357                 ctx->invalid_bitmaps++;
2358 }
2359
2360 #ifdef HAVE_PTHREAD
2361 static errcode_t e2fsck_pass1_copy_bitmap(ext2_filsys fs, ext2fs_generic_bitmap *src,
2362                                           ext2fs_generic_bitmap *dest)
2363 {
2364         errcode_t ret;
2365
2366         ret = ext2fs_copy_bitmap(*src, dest);
2367         if (ret)
2368                 return ret;
2369
2370         (*dest)->fs = fs;
2371
2372         return 0;
2373 }
2374
2375 static void e2fsck_pass1_free_bitmap(ext2fs_generic_bitmap *bitmap)
2376 {
2377         if (*bitmap) {
2378                 ext2fs_free_generic_bmap(*bitmap);
2379                 *bitmap = NULL;
2380         }
2381
2382 }
2383
2384 static errcode_t e2fsck_pass1_merge_bitmap(ext2_filsys fs, ext2fs_generic_bitmap *src,
2385                                           ext2fs_generic_bitmap *dest)
2386 {
2387         errcode_t ret = 0;
2388
2389         if (*src) {
2390                 if (*dest == NULL) {
2391                         *dest = *src;
2392                         *src = NULL;
2393                 } else {
2394                         ret = ext2fs_merge_bitmap(*src, *dest, NULL, NULL);
2395                         if (ret)
2396                                 return ret;
2397                 }
2398                 (*dest)->fs = fs;
2399         }
2400
2401         return 0;
2402 }
2403
2404 static errcode_t e2fsck_pass1_copy_fs(ext2_filsys dest, e2fsck_t src_context,
2405                                       ext2_filsys src)
2406 {
2407         errcode_t       retval;
2408
2409         memcpy(dest, src, sizeof(struct struct_ext2_filsys));
2410         dest->inode_map = NULL;
2411         dest->block_map = NULL;
2412         dest->badblocks = NULL;
2413         if (dest->dblist)
2414                 dest->dblist->fs = dest;
2415         if (src->block_map) {
2416                 retval = e2fsck_pass1_copy_bitmap(dest, &src->block_map,
2417                                                   &dest->block_map);
2418                 if (retval)
2419                         return retval;
2420         }
2421         if (src->inode_map) {
2422                 retval = e2fsck_pass1_copy_bitmap(dest, &src->inode_map,
2423                                                   &dest->inode_map);
2424                 if (retval)
2425                         return retval;
2426         }
2427
2428         if (src->badblocks) {
2429                 retval = ext2fs_badblocks_copy(src->badblocks,
2430                                                &dest->badblocks);
2431                 if (retval)
2432                         return retval;
2433         }
2434
2435         /* disable it for now */
2436         src_context->openfs_flags &= ~EXT2_FLAG_EXCLUSIVE;
2437         retval = ext2fs_open_channel(dest, src_context->io_options,
2438                                      src_context->io_manager,
2439                                      src_context->openfs_flags,
2440                                      src->io->block_size);
2441         if (retval)
2442                 return retval;
2443
2444         /* Block size might not be default */
2445         io_channel_set_blksize(dest->io, src->io->block_size);
2446         ehandler_init(dest->io);
2447
2448         assert(dest->io->magic == src->io->magic);
2449         assert(dest->io->manager == src->io->manager);
2450         assert(strcmp(dest->io->name, src->io->name) == 0);
2451         assert(dest->io->block_size == src->io->block_size);
2452         assert(dest->io->read_error == src->io->read_error);
2453         assert(dest->io->write_error == src->io->write_error);
2454         assert(dest->io->refcount == src->io->refcount);
2455         assert(dest->io->flags == src->io->flags);
2456         assert(dest->io->app_data == dest);
2457         assert(src->io->app_data == src);
2458         assert(dest->io->align == src->io->align);
2459
2460         /* The data should be written to disk immediately */
2461         dest->io->flags |= CHANNEL_FLAGS_WRITETHROUGH;
2462         /* icache will be rebuilt if needed, so do not copy from @src */
2463         src->icache = NULL;
2464         return 0;
2465 }
2466
2467 static int e2fsck_pass1_merge_fs(ext2_filsys dest, ext2_filsys src)
2468 {
2469         struct ext2_inode_cache *icache = dest->icache;
2470         errcode_t retval = 0;
2471         io_channel dest_io;
2472         io_channel dest_image_io;
2473         ext2fs_inode_bitmap inode_map;
2474         ext2fs_block_bitmap block_map;
2475         ext2_badblocks_list badblocks;
2476         ext2_dblist dblist;
2477         int flags;
2478         e2fsck_t dest_ctx = dest->priv_data;
2479
2480         dest_io = dest->io;
2481         dest_image_io = dest->image_io;
2482         inode_map = dest->inode_map;
2483         block_map = dest->block_map;
2484         badblocks = dest->badblocks;
2485         dblist = dest->dblist;
2486         flags = dest->flags;
2487
2488         memcpy(dest, src, sizeof(struct struct_ext2_filsys));
2489         dest->io = dest_io;
2490         dest->image_io = dest_image_io;
2491         dest->icache = icache;
2492         dest->inode_map = inode_map;
2493         dest->block_map = block_map;
2494         dest->badblocks = badblocks;
2495         dest->dblist = dblist;
2496         dest->priv_data = dest_ctx;
2497         if (dest->dblist)
2498                 dest->dblist->fs = dest;
2499         dest->flags = src->flags | flags;
2500         if (!(src->flags & EXT2_FLAG_VALID) || !(flags & EXT2_FLAG_VALID))
2501                 ext2fs_unmark_valid(dest);
2502
2503         if (src->icache) {
2504                 ext2fs_free_inode_cache(src->icache);
2505                 src->icache = NULL;
2506         }
2507
2508         retval = e2fsck_pass1_merge_bitmap(dest, &src->inode_map,
2509                                            &dest->inode_map);
2510         if (retval)
2511                 goto out;
2512
2513         retval = e2fsck_pass1_merge_bitmap(dest, &src->block_map,
2514                                           &dest->block_map);
2515         if (retval)
2516                 goto out;
2517
2518         if (src->dblist) {
2519                 if (dest->dblist) {
2520                         retval = ext2fs_merge_dblist(src->dblist,
2521                                                      dest->dblist);
2522                         if (retval)
2523                                 goto out;
2524                 } else {
2525                         dest->dblist = src->dblist;
2526                         dest->dblist->fs = dest;
2527                         src->dblist = NULL;
2528                 }
2529         }
2530
2531         if (src->badblocks) {
2532                 if (dest->badblocks == NULL)
2533                         retval = ext2fs_badblocks_copy(src->badblocks,
2534                                                        &dest->badblocks);
2535                 else
2536                         retval = ext2fs_badblocks_merge(src->badblocks,
2537                                                         dest->badblocks);
2538         }
2539 out:
2540         io_channel_close(src->io);
2541         if (src->inode_map)
2542                 ext2fs_free_generic_bmap(src->inode_map);
2543         if (src->block_map)
2544                 ext2fs_free_generic_bmap(src->block_map);
2545         if (src->badblocks)
2546                 ext2fs_badblocks_list_free(src->badblocks);
2547         if (src->dblist)
2548                 ext2fs_free_dblist(src->dblist);
2549
2550         return retval;
2551 }
2552
2553 static void e2fsck_pass1_copy_invalid_bitmaps(e2fsck_t global_ctx,
2554                                               e2fsck_t thread_ctx)
2555 {
2556         dgrp_t i, j;
2557         dgrp_t grp_start = thread_ctx->thread_info.et_group_start;
2558         dgrp_t grp_end = thread_ctx->thread_info.et_group_end;
2559         dgrp_t total = grp_end - grp_start;
2560
2561         thread_ctx->invalid_inode_bitmap_flag =
2562                         e2fsck_allocate_memory(global_ctx, sizeof(int) * total,
2563                                                 "invalid_inode_bitmap");
2564         thread_ctx->invalid_block_bitmap_flag =
2565                         e2fsck_allocate_memory(global_ctx, sizeof(int) * total,
2566                                                "invalid_block_bitmap");
2567         thread_ctx->invalid_inode_table_flag =
2568                         e2fsck_allocate_memory(global_ctx, sizeof(int) * total,
2569                                                "invalid_inode_table");
2570
2571         memcpy(thread_ctx->invalid_block_bitmap_flag,
2572                &global_ctx->invalid_block_bitmap_flag[grp_start],
2573                total * sizeof(int));
2574         memcpy(thread_ctx->invalid_inode_bitmap_flag,
2575                &global_ctx->invalid_inode_bitmap_flag[grp_start],
2576                total * sizeof(int));
2577         memcpy(thread_ctx->invalid_inode_table_flag,
2578                &global_ctx->invalid_inode_table_flag[grp_start],
2579                total * sizeof(int));
2580
2581         thread_ctx->invalid_bitmaps = 0;
2582         for (i = grp_start, j = 0; i < grp_end; i++, j++) {
2583                 if (thread_ctx->invalid_block_bitmap_flag[j])
2584                         thread_ctx->invalid_bitmaps++;
2585                 if (thread_ctx->invalid_inode_bitmap_flag[j])
2586                         thread_ctx->invalid_bitmaps++;
2587                 if (thread_ctx->invalid_inode_table_flag[j])
2588                         thread_ctx->invalid_bitmaps++;
2589         }
2590 }
2591
2592 static void e2fsck_pass1_merge_invalid_bitmaps(e2fsck_t global_ctx,
2593                                                e2fsck_t thread_ctx)
2594 {
2595         dgrp_t i, j;
2596         dgrp_t grp_start = thread_ctx->thread_info.et_group_start;
2597         dgrp_t grp_end = thread_ctx->thread_info.et_group_end;
2598         dgrp_t total = grp_end - grp_start;
2599
2600         memcpy(&global_ctx->invalid_block_bitmap_flag[grp_start],
2601                thread_ctx->invalid_block_bitmap_flag, total * sizeof(int));
2602         memcpy(&global_ctx->invalid_inode_bitmap_flag[grp_start],
2603                thread_ctx->invalid_inode_bitmap_flag, total * sizeof(int));
2604         memcpy(&global_ctx->invalid_inode_table_flag[grp_start],
2605                thread_ctx->invalid_inode_table_flag, total * sizeof(int));
2606         global_ctx->invalid_bitmaps += thread_ctx->invalid_bitmaps;
2607 }
2608
2609 static errcode_t e2fsck_pass1_thread_prepare(e2fsck_t global_ctx, e2fsck_t *thread_ctx,
2610                                              int thread_index, int num_threads,
2611                                              dgrp_t average_group)
2612 {
2613         errcode_t               retval;
2614         e2fsck_t                thread_context;
2615         ext2_filsys             thread_fs;
2616         ext2_filsys             global_fs = global_ctx->fs;
2617         struct e2fsck_thread    *tinfo;
2618
2619         assert(global_ctx->inode_used_map == NULL);
2620         assert(global_ctx->inode_dir_map == NULL);
2621         assert(global_ctx->inode_bb_map == NULL);
2622         assert(global_ctx->inode_imagic_map == NULL);
2623         assert(global_ctx->inode_reg_map == NULL);
2624         assert(global_ctx->inodes_to_rebuild == NULL);
2625
2626         assert(global_ctx->block_found_map != NULL);
2627         assert(global_ctx->block_metadata_map != NULL);
2628         assert(global_ctx->block_dup_map != NULL);
2629         assert(global_ctx->block_ea_map == NULL);
2630         assert(global_ctx->fs->dblist == NULL);
2631
2632         retval = ext2fs_get_mem(sizeof(struct e2fsck_struct), &thread_context);
2633         if (retval) {
2634                 com_err(global_ctx->program_name, retval, "while allocating memory");
2635                 return retval;
2636         }
2637         memcpy(thread_context, global_ctx, sizeof(struct e2fsck_struct));
2638         thread_context->block_dup_map = NULL;
2639
2640         retval = e2fsck_allocate_block_bitmap(global_ctx->fs,
2641                                 _("in-use block map"), EXT2FS_BMAP64_RBTREE,
2642                                 "block_found_map", &thread_context->block_found_map);
2643         if (retval)
2644                 goto out_context;
2645
2646         thread_context->global_ctx = global_ctx;
2647         retval = ext2fs_get_mem(sizeof(struct struct_ext2_filsys), &thread_fs);
2648         if (retval) {
2649                 com_err(global_ctx->program_name, retval, "while allocating memory");
2650                 goto out_context;
2651         }
2652
2653         io_channel_flush_cleanup(global_fs->io);
2654         retval = e2fsck_pass1_copy_fs(thread_fs, global_ctx, global_fs);
2655         if (retval) {
2656                 com_err(global_ctx->program_name, retval, "while copying fs");
2657                 goto out_fs;
2658         }
2659         thread_fs->priv_data = thread_context;
2660
2661         thread_context->thread_info.et_thread_index = thread_index;
2662         set_up_logging(thread_context);
2663
2664         tinfo = &thread_context->thread_info;
2665         tinfo->et_group_start = average_group * thread_index;
2666         if (thread_index == global_fs->fs_num_threads - 1)
2667                 tinfo->et_group_end = thread_fs->group_desc_count;
2668         else
2669                 tinfo->et_group_end = average_group * (thread_index + 1);
2670         tinfo->et_group_next = tinfo->et_group_start;
2671         tinfo->et_inode_number = 0;
2672         tinfo->et_log_buf[0] = '\0';
2673         tinfo->et_log_length = 0;
2674         if (thread_context->options & E2F_OPT_MULTITHREAD)
2675                 log_out(thread_context, _("Scan group range [%d, %d)\n"),
2676                         tinfo->et_group_start, tinfo->et_group_end);
2677         thread_context->fs = thread_fs;
2678         retval = quota_init_context(&thread_context->qctx, thread_fs, 0);
2679         if (retval) {
2680                 com_err(global_ctx->program_name, retval,
2681                         "while init quota context");
2682                 goto out_fs;
2683         }
2684         *thread_ctx = thread_context;
2685         e2fsck_pass1_copy_invalid_bitmaps(global_ctx, thread_context);
2686         return 0;
2687 out_fs:
2688         ext2fs_free_mem(&thread_fs);
2689 out_context:
2690         if (thread_context->block_found_map)
2691                 ext2fs_free_mem(&thread_context->block_found_map);
2692         ext2fs_free_mem(&thread_context);
2693         return retval;
2694 }
2695
2696 static void e2fsck_pass1_merge_dir_info(e2fsck_t global_ctx, e2fsck_t thread_ctx)
2697 {
2698         if (thread_ctx->dir_info == NULL)
2699                 return;
2700
2701         if (global_ctx->dir_info == NULL) {
2702                 global_ctx->dir_info = thread_ctx->dir_info;
2703                 thread_ctx->dir_info = NULL;
2704                 return;
2705         }
2706
2707         e2fsck_merge_dir_info(global_ctx, thread_ctx->dir_info,
2708                               global_ctx->dir_info);
2709 }
2710
2711 static void e2fsck_pass1_merge_dx_dir(e2fsck_t global_ctx, e2fsck_t thread_ctx)
2712 {
2713         if (thread_ctx->dx_dir_info == NULL)
2714                 return;
2715
2716         if (global_ctx->dx_dir_info == NULL) {
2717                 global_ctx->dx_dir_info = thread_ctx->dx_dir_info;
2718                 global_ctx->dx_dir_info_size = thread_ctx->dx_dir_info_size;
2719                 global_ctx->dx_dir_info_count = thread_ctx->dx_dir_info_count;
2720                 thread_ctx->dx_dir_info = NULL;
2721                 return;
2722         }
2723
2724         e2fsck_merge_dx_dir(global_ctx, thread_ctx);
2725 }
2726
2727 static inline errcode_t
2728 e2fsck_pass1_merge_icount(ext2_icount_t *dest_icount,
2729                           ext2_icount_t *src_icount)
2730 {
2731         if (*src_icount) {
2732                 if (*dest_icount == NULL) {
2733                         *dest_icount = *src_icount;
2734                         *src_icount = NULL;
2735                 } else {
2736                         errcode_t ret;
2737
2738                         ret = ext2fs_icount_merge(*src_icount,
2739                                                   *dest_icount);
2740                         if (ret)
2741                                 return ret;
2742                 }
2743         }
2744
2745         return 0;
2746 }
2747
2748 static errcode_t e2fsck_pass1_merge_icounts(e2fsck_t global_ctx, e2fsck_t thread_ctx)
2749 {
2750         errcode_t ret;
2751
2752         ret = e2fsck_pass1_merge_icount(&global_ctx->inode_count,
2753                                         &thread_ctx->inode_count);
2754         if (ret)
2755                 return ret;
2756         ret = e2fsck_pass1_merge_icount(&global_ctx->inode_link_info,
2757                                         &thread_ctx->inode_link_info);
2758
2759         return ret;
2760 }
2761
2762 static errcode_t e2fsck_pass1_merge_dirs_to_hash(e2fsck_t global_ctx,
2763                                                  e2fsck_t thread_ctx)
2764 {
2765         errcode_t retval = 0;
2766
2767         if (!thread_ctx->dirs_to_hash)
2768                 return 0;
2769
2770         if (!global_ctx->dirs_to_hash)
2771                 retval = ext2fs_badblocks_copy(thread_ctx->dirs_to_hash,
2772                                                &global_ctx->dirs_to_hash);
2773         else
2774                 retval = ext2fs_badblocks_merge(thread_ctx->dirs_to_hash,
2775                                                 global_ctx->dirs_to_hash);
2776
2777         return retval;
2778 }
2779
2780 static errcode_t e2fsck_pass1_merge_ea_inode_refs(e2fsck_t global_ctx,
2781                                                   e2fsck_t thread_ctx)
2782 {
2783         ea_value_t count;
2784         blk64_t blk;
2785         errcode_t retval;
2786
2787         if (!thread_ctx->ea_inode_refs)
2788                 return 0;
2789
2790         if (!global_ctx->ea_inode_refs) {
2791                 global_ctx->ea_inode_refs = thread_ctx->ea_inode_refs;
2792                 thread_ctx->ea_inode_refs = NULL;
2793                 return 0;
2794         }
2795
2796         ea_refcount_intr_begin(thread_ctx->ea_inode_refs);
2797         while (1) {
2798                 if ((blk = ea_refcount_intr_next(thread_ctx->ea_inode_refs,
2799                                                  &count)) == 0)
2800                         break;
2801                 if (!global_ctx->block_ea_map ||
2802                     !ext2fs_fast_test_block_bitmap2(global_ctx->block_ea_map,
2803                                                     blk)) {
2804                         retval = ea_refcount_store(global_ctx->ea_inode_refs,
2805                                                    blk, count);
2806                         if (retval)
2807                                 return retval;
2808                 }
2809         }
2810
2811         return retval;
2812 }
2813
2814 static ea_value_t ea_refcount_usage(e2fsck_t ctx, blk64_t blk,
2815                                     ea_value_t *orig)
2816 {
2817         ea_value_t count_cur;
2818         ea_value_t count_extra = 0;
2819         ea_value_t count_orig;
2820
2821         ea_refcount_fetch(ctx->refcount_orig, blk, &count_orig);
2822         ea_refcount_fetch(ctx->refcount, blk, &count_cur);
2823         /* most of time this is not needed */
2824         if (ctx->refcount_extra && count_cur == 0)
2825                 ea_refcount_fetch(ctx->refcount_extra, blk, &count_extra);
2826
2827         if (!count_orig)
2828                 count_orig = *orig;
2829         else if (orig)
2830                 *orig = count_orig;
2831
2832         return count_orig + count_extra - count_cur;
2833 }
2834
2835 static errcode_t e2fsck_pass1_merge_ea_refcount(e2fsck_t global_ctx,
2836                                                 e2fsck_t thread_ctx)
2837 {
2838         ea_value_t count;
2839         blk64_t blk;
2840         errcode_t retval = 0;
2841
2842         if (!thread_ctx->refcount)
2843                 return 0;
2844
2845         if (!global_ctx->refcount) {
2846                 global_ctx->refcount = thread_ctx->refcount;
2847                 thread_ctx->refcount = NULL;
2848                 global_ctx->refcount_extra = thread_ctx->refcount;
2849                 thread_ctx->refcount_extra = NULL;
2850                 return 0;
2851         }
2852
2853         ea_refcount_intr_begin(thread_ctx->refcount);
2854         while (1) {
2855                 if ((blk = ea_refcount_intr_next(thread_ctx->refcount,
2856                                                  &count)) == 0)
2857                         break;
2858                 /**
2859                  * this EA has never seen before, so just store its
2860                  * refcount and refcount_extra into global_ctx if needed.
2861                  */
2862                 if (!global_ctx->block_ea_map ||
2863                     !ext2fs_fast_test_block_bitmap2(global_ctx->block_ea_map,
2864                                                     blk)) {
2865                         ea_value_t extra;
2866
2867                         retval = ea_refcount_store(global_ctx->refcount,
2868                                                    blk, count);
2869                         if (retval)
2870                                 return retval;
2871
2872                         if (count > 0 || !thread_ctx->refcount_extra)
2873                                 continue;
2874                         ea_refcount_fetch(thread_ctx->refcount_extra, blk,
2875                                           &extra);
2876                         if (extra == 0)
2877                                 continue;
2878
2879                         if (!global_ctx->refcount_extra) {
2880                                 retval = ea_refcount_create(0,
2881                                                 &global_ctx->refcount_extra);
2882                                 if (retval)
2883                                         return retval;
2884                         }
2885                         retval = ea_refcount_store(global_ctx->refcount_extra,
2886                                                    blk, extra);
2887                         if (retval)
2888                                 return retval;
2889                 } else {
2890                         ea_value_t orig;
2891                         ea_value_t thread_usage;
2892                         ea_value_t global_usage;
2893                         ea_value_t new;
2894
2895                         thread_usage = ea_refcount_usage(thread_ctx,
2896                                                          blk, &orig);
2897                         global_usage = ea_refcount_usage(global_ctx,
2898                                                          blk, &orig);
2899                         if (thread_usage + global_usage <= orig) {
2900                                 new = orig - thread_usage - global_usage;
2901                                 retval = ea_refcount_store(global_ctx->refcount,
2902                                                            blk, new);
2903                                 if (retval)
2904                                         return retval;
2905                                 continue;
2906                         }
2907                         /* update it is as zero */
2908                         retval = ea_refcount_store(global_ctx->refcount,
2909                                                    blk, 0);
2910                         if (retval)
2911                                 return retval;
2912                         /* Ooops, this EA was referenced more than it stated */
2913                         if (!global_ctx->refcount_extra) {
2914                                 retval = ea_refcount_create(0,
2915                                                 &global_ctx->refcount_extra);
2916                                 if (retval)
2917                                         return retval;
2918                         }
2919                         new = global_usage + thread_usage - orig;
2920                         retval = ea_refcount_store(global_ctx->refcount_extra,
2921                                                    blk, new);
2922                         if (retval)
2923                                 return retval;
2924                 }
2925         }
2926
2927         return retval;
2928 }
2929
2930 static errcode_t e2fsck_pass1_merge_context(e2fsck_t global_ctx,
2931                                             e2fsck_t thread_ctx)
2932 {
2933         ext2_filsys global_fs = global_ctx->fs;
2934         errcode_t retval;
2935         int i;
2936
2937         global_ctx->fs_directory_count += thread_ctx->fs_directory_count;
2938         global_ctx->fs_regular_count += thread_ctx->fs_regular_count;
2939         global_ctx->fs_blockdev_count += thread_ctx->fs_blockdev_count;
2940         global_ctx->fs_chardev_count += thread_ctx->fs_chardev_count;
2941         global_ctx->fs_links_count += thread_ctx->fs_links_count;
2942         global_ctx->fs_symlinks_count += thread_ctx->fs_symlinks_count;
2943         global_ctx->fs_fast_symlinks_count += thread_ctx->fs_fast_symlinks_count;
2944         global_ctx->fs_fifo_count += thread_ctx->fs_fifo_count;
2945         global_ctx->fs_total_count += thread_ctx->fs_total_count;
2946         global_ctx->fs_badblocks_count += thread_ctx->fs_badblocks_count;
2947         global_ctx->fs_sockets_count += thread_ctx->fs_sockets_count;
2948         global_ctx->fs_ind_count += thread_ctx->fs_ind_count;
2949         global_ctx->fs_dind_count += thread_ctx->fs_dind_count;
2950         global_ctx->fs_tind_count += thread_ctx->fs_tind_count;
2951         global_ctx->fs_fragmented += thread_ctx->fs_fragmented;
2952         global_ctx->fs_fragmented_dir += thread_ctx->fs_fragmented_dir;
2953         global_ctx->large_files += thread_ctx->large_files;
2954         /* threads might enable E2F_OPT_YES */
2955         global_ctx->options |= thread_ctx->options;
2956         global_ctx->flags |= thread_ctx->flags;
2957         /*
2958          * The l+f inode may have been cleared, so zap it now and
2959          * later passes will recalculate it if necessary
2960          */
2961         global_ctx->lost_and_found = 0;
2962         /* merge extent depth count */
2963         for (i = 0; i < MAX_EXTENT_DEPTH_COUNT; i++)
2964                 global_ctx->extent_depth_count[i] +=
2965                         thread_ctx->extent_depth_count[i];
2966
2967         e2fsck_pass1_merge_dir_info(global_ctx, thread_ctx);
2968         e2fsck_pass1_merge_dx_dir(global_ctx, thread_ctx);
2969
2970         retval = e2fsck_pass1_merge_fs(global_ctx->fs, thread_ctx->fs);
2971         if (retval) {
2972                 com_err(global_ctx->program_name, 0, _("while merging fs\n"));
2973                 return retval;
2974         }
2975         retval = e2fsck_pass1_merge_icounts(global_ctx, thread_ctx);
2976         if (retval) {
2977                 com_err(global_ctx->program_name, 0,
2978                         _("while merging icounts\n"));
2979                 return retval;
2980         }
2981
2982         retval = e2fsck_pass1_merge_dirs_to_hash(global_ctx, thread_ctx);
2983         if (retval) {
2984                 com_err(global_ctx->program_name, 0,
2985                         _("while merging dirs to hash\n"));
2986                 return retval;
2987         }
2988
2989         e2fsck_pass1_merge_ea_inode_refs(global_ctx, thread_ctx);
2990         e2fsck_pass1_merge_ea_refcount(global_ctx, thread_ctx);
2991         retval = quota_merge_and_update_usage(global_ctx->qctx,
2992                                               thread_ctx->qctx);
2993         if (retval)
2994                 return retval;
2995
2996         e2fsck_pass1_merge_invalid_bitmaps(global_ctx, thread_ctx);
2997
2998         retval = e2fsck_pass1_merge_bitmap(global_fs,
2999                                 &thread_ctx->inode_used_map,
3000                                 &global_ctx->inode_used_map);
3001         if (retval)
3002                 return retval;
3003
3004         retval = e2fsck_pass1_merge_bitmap(global_fs,
3005                                 &thread_ctx->inode_bad_map,
3006                                 &global_ctx->inode_bad_map);
3007         if (retval)
3008                 return retval;
3009         retval = e2fsck_pass1_merge_bitmap(global_fs,
3010                                         &thread_ctx->inode_dir_map,
3011                                         &global_ctx->inode_dir_map);
3012         if (retval)
3013                 return retval;
3014         retval = e2fsck_pass1_merge_bitmap(global_fs,
3015                                 &thread_ctx->inode_bb_map,
3016                                 &global_ctx->inode_bb_map);
3017         if (retval)
3018                 return retval;
3019         retval = e2fsck_pass1_merge_bitmap(global_fs,
3020                                 &thread_ctx->inode_imagic_map,
3021                                 &global_ctx->inode_imagic_map);
3022         if (retval)
3023                 return retval;
3024         retval = e2fsck_pass1_merge_bitmap(global_fs,
3025                                 &thread_ctx->inode_reg_map,
3026                                 &global_ctx->inode_reg_map);
3027         if (retval)
3028                 return retval;
3029         retval = e2fsck_pass1_merge_bitmap(global_fs,
3030                                 &thread_ctx->inodes_to_rebuild,
3031                                 &global_ctx->inodes_to_rebuild);
3032         if (retval)
3033                 return retval;
3034         retval = e2fsck_pass1_merge_bitmap(global_fs,
3035                                 &thread_ctx->block_ea_map,
3036                                 &global_ctx->block_ea_map);
3037         if (retval)
3038                 return retval;
3039
3040         if (ext2fs_has_feature_shared_blocks(global_fs->super) &&
3041             !(global_ctx->options & E2F_OPT_UNSHARE_BLOCKS))
3042                 return 0;
3043         /*
3044          * This need be done after merging block_ea_map
3045          * because ea block might be shared, we need exclude
3046          * them from dup blocks.
3047          */
3048         e2fsck_pass1_block_map_w_lock(thread_ctx);
3049         retval = ext2fs_merge_bitmap(thread_ctx->block_found_map,
3050                                      global_ctx->block_found_map,
3051                                      global_ctx->block_dup_map,
3052                                      global_ctx->block_ea_map);
3053         e2fsck_pass1_block_map_w_unlock(thread_ctx);
3054         if (retval == EEXIST)
3055                 global_ctx->flags |= E2F_FLAG_DUP_BLOCK;
3056
3057         return 0;
3058 }
3059
3060 static int e2fsck_pass1_thread_join(e2fsck_t global_ctx, e2fsck_t thread_ctx)
3061 {
3062         errcode_t       retval;
3063
3064         retval = e2fsck_pass1_merge_context(global_ctx, thread_ctx);
3065         ext2fs_free_mem(&thread_ctx->fs);
3066         if (thread_ctx->logf)
3067                 fclose(thread_ctx->logf);
3068         if (thread_ctx->problem_logf) {
3069                 fputs("</problem_log>\n", thread_ctx->problem_logf);
3070                 fclose(thread_ctx->problem_logf);
3071         }
3072         e2fsck_pass1_free_bitmap(&thread_ctx->inode_used_map);
3073         e2fsck_pass1_free_bitmap(&thread_ctx->inode_bad_map);
3074         e2fsck_pass1_free_bitmap(&thread_ctx->inode_dir_map);
3075         e2fsck_pass1_free_bitmap(&thread_ctx->inode_bb_map);
3076         e2fsck_pass1_free_bitmap(&thread_ctx->inode_imagic_map);
3077         e2fsck_pass1_free_bitmap(&thread_ctx->inode_reg_map);
3078         e2fsck_pass1_free_bitmap(&thread_ctx->inodes_to_rebuild);
3079         e2fsck_pass1_free_bitmap(&thread_ctx->block_found_map);
3080         e2fsck_pass1_free_bitmap(&thread_ctx->block_ea_map);
3081         if (thread_ctx->refcount)
3082                 ea_refcount_free(thread_ctx->refcount);
3083         if (thread_ctx->refcount_extra)
3084                 ea_refcount_free(thread_ctx->refcount_extra);
3085         if (thread_ctx->ea_inode_refs)
3086                 ea_refcount_free(thread_ctx->ea_inode_refs);
3087         if (thread_ctx->refcount_orig)
3088                 ea_refcount_free(thread_ctx->refcount_orig);
3089         e2fsck_free_dir_info(thread_ctx);
3090         ext2fs_free_icount(thread_ctx->inode_count);
3091         ext2fs_free_icount(thread_ctx->inode_link_info);
3092         if (thread_ctx->dirs_to_hash)
3093                 ext2fs_badblocks_list_free(thread_ctx->dirs_to_hash);
3094         quota_release_context(&thread_ctx->qctx);
3095         ext2fs_free_mem(&thread_ctx->invalid_block_bitmap_flag);
3096         ext2fs_free_mem(&thread_ctx->invalid_inode_bitmap_flag);
3097         ext2fs_free_mem(&thread_ctx->invalid_inode_table_flag);
3098         ext2fs_free_mem(&thread_ctx);
3099
3100         return retval;
3101 }
3102
3103 static int e2fsck_pass1_threads_join(struct e2fsck_thread_info *infos,
3104                                      e2fsck_t global_ctx)
3105 {
3106         errcode_t                        rc;
3107         errcode_t                        ret = 0;
3108         int                              i;
3109         struct e2fsck_thread_info       *pinfo;
3110         int                              num_threads = global_ctx->fs_num_threads;
3111
3112         /* merge invalid bitmaps will recalculate it */
3113         global_ctx->invalid_bitmaps = 0;
3114         for (i = 0; i < num_threads; i++) {
3115                 pinfo = &infos[i];
3116
3117                 if (!pinfo->eti_started)
3118                         continue;
3119
3120                 rc = pthread_join(pinfo->eti_thread_id, NULL);
3121                 if (rc) {
3122                         com_err(global_ctx->program_name, rc,
3123                                 _("while joining thread\n"));
3124                         if (ret == 0)
3125                                 ret = rc;
3126                 }
3127                 rc = e2fsck_pass1_thread_join(global_ctx, infos[i].eti_thread_ctx);
3128                 if (rc) {
3129                         com_err(global_ctx->program_name, rc,
3130                                 _("while joining pass1 thread\n"));
3131                         if (ret == 0)
3132                                 ret = rc;
3133                 }
3134         }
3135         free(infos);
3136
3137         return ret;
3138 }
3139
3140 static void *e2fsck_pass1_thread(void *arg)
3141 {
3142         struct e2fsck_thread_info       *info = arg;
3143         e2fsck_t                         thread_ctx = info->eti_thread_ctx;
3144 #ifdef DEBUG_THREADS
3145         struct e2fsck_thread_debug      *thread_debug = info->eti_debug;
3146 #endif
3147
3148 #ifdef DEBUG_THREADS
3149         pthread_mutex_lock(&thread_debug->etd_mutex);
3150         while (info->eti_thread_index > thread_debug->etd_finished_threads) {
3151                 pthread_cond_wait(&thread_debug->etd_cond,
3152                                   &thread_debug->etd_mutex);
3153         }
3154         pthread_mutex_unlock(&thread_debug->etd_mutex);
3155 #endif
3156
3157 #ifdef HAVE_SETJMP_H
3158         /*
3159          * When fatal_error() happens, jump to here. The thread
3160          * context's flags will be saved, but its abort_loc will
3161          * be overwritten by original jump buffer for the later
3162          * tests.
3163          */
3164         if (setjmp(thread_ctx->abort_loc)) {
3165                 thread_ctx->flags &= ~E2F_FLAG_SETJMP_OK;
3166                 goto out;
3167         }
3168         thread_ctx->flags |= E2F_FLAG_SETJMP_OK;
3169 #endif
3170
3171         e2fsck_pass1_run(thread_ctx);
3172
3173 out:
3174         if (thread_ctx->options & E2F_OPT_MULTITHREAD)
3175                 log_out(thread_ctx,
3176                         _("Scanned group range [%lu, %lu), inodes %lu\n"),
3177                         thread_ctx->thread_info.et_group_start,
3178                         thread_ctx->thread_info.et_group_end,
3179                         thread_ctx->thread_info.et_inode_number);
3180
3181 #ifdef DEBUG_THREADS
3182         pthread_mutex_lock(&thread_debug->etd_mutex);
3183         thread_debug->etd_finished_threads++;
3184         pthread_cond_broadcast(&thread_debug->etd_cond);
3185         pthread_mutex_unlock(&thread_debug->etd_mutex);
3186 #endif
3187
3188         return NULL;
3189 }
3190
3191 static int e2fsck_pass1_threads_start(struct e2fsck_thread_info **pinfo,
3192                                       e2fsck_t global_ctx)
3193 {
3194         struct e2fsck_thread_info       *infos;
3195         pthread_attr_t                   attr;
3196         errcode_t                        retval;
3197         errcode_t                        ret;
3198         struct e2fsck_thread_info       *tmp_pinfo;
3199         int                              i;
3200         e2fsck_t                         thread_ctx;
3201         dgrp_t                           average_group;
3202         int                              num_threads = global_ctx->fs_num_threads;
3203 #ifdef DEBUG_THREADS
3204         struct e2fsck_thread_debug       thread_debug =
3205                 {PTHREAD_MUTEX_INITIALIZER, PTHREAD_COND_INITIALIZER, 0};
3206
3207         thread_debug.etd_finished_threads = 0;
3208 #endif
3209
3210         retval = pthread_attr_init(&attr);
3211         if (retval) {
3212                 com_err(global_ctx->program_name, retval,
3213                         _("while setting pthread attribute\n"));
3214                 return retval;
3215         }
3216
3217         infos = calloc(num_threads, sizeof(struct e2fsck_thread_info));
3218         if (infos == NULL) {
3219                 retval = -ENOMEM;
3220                 com_err(global_ctx->program_name, retval,
3221                         _("while allocating memory for threads\n"));
3222                 pthread_attr_destroy(&attr);
3223                 return retval;
3224         }
3225
3226         average_group = ext2fs_get_avg_group(global_ctx->fs);
3227         for (i = 0; i < num_threads; i++) {
3228                 tmp_pinfo = &infos[i];
3229                 tmp_pinfo->eti_thread_index = i;
3230 #ifdef DEBUG_THREADS
3231                 tmp_pinfo->eti_debug = &thread_debug;
3232 #endif
3233                 retval = e2fsck_pass1_thread_prepare(global_ctx, &thread_ctx,
3234                                                      i, num_threads,
3235                                                      average_group);
3236                 if (retval) {
3237                         com_err(global_ctx->program_name, retval,
3238                                 _("while preparing pass1 thread\n"));
3239                         break;
3240                 }
3241                 tmp_pinfo->eti_thread_ctx = thread_ctx;
3242
3243                 retval = pthread_create(&tmp_pinfo->eti_thread_id, &attr,
3244                                         &e2fsck_pass1_thread, tmp_pinfo);
3245                 if (retval) {
3246                         com_err(global_ctx->program_name, retval,
3247                                 _("while creating thread\n"));
3248                         e2fsck_pass1_thread_join(global_ctx, thread_ctx);
3249                         break;
3250                 }
3251
3252                 tmp_pinfo->eti_started = 1;
3253         }
3254
3255         /* destroy the thread attribute object, since it is no longer needed */
3256         ret = pthread_attr_destroy(&attr);
3257         if (ret) {
3258                 com_err(global_ctx->program_name, ret,
3259                         _("while destroying thread attribute\n"));
3260                 if (retval == 0)
3261                         retval = ret;
3262         }
3263
3264         if (retval) {
3265                 e2fsck_pass1_threads_join(infos, global_ctx);
3266                 return retval;
3267         }
3268         *pinfo = infos;
3269         return 0;
3270 }
3271
3272 static void e2fsck_pass1_multithread(e2fsck_t global_ctx)
3273 {
3274         struct e2fsck_thread_info *infos = NULL;
3275         errcode_t retval;
3276
3277         retval = e2fsck_pass1_threads_start(&infos, global_ctx);
3278         if (retval) {
3279                 com_err(global_ctx->program_name, retval,
3280                         _("while starting pass1 threads\n"));
3281                 goto out_abort;
3282         }
3283
3284         retval = e2fsck_pass1_threads_join(infos, global_ctx);
3285         if (retval) {
3286                 com_err(global_ctx->program_name, retval,
3287                         _("while joining pass1 threads\n"));
3288                 goto out_abort;
3289         }
3290         return;
3291 out_abort:
3292         global_ctx->flags |= E2F_FLAG_ABORT;
3293         return;
3294 }
3295 #endif
3296
3297 void e2fsck_pass1(e2fsck_t ctx)
3298 {
3299         errcode_t retval;
3300         int need_single = 1;
3301
3302         retval = e2fsck_pass1_prepare(ctx);
3303         if (retval)
3304                 return;
3305 #ifdef HAVE_PTHREAD
3306         if (ctx->fs_num_threads > 1 ||
3307             ctx->options & E2F_OPT_MULTITHREAD) {
3308                 need_single = 0;
3309                 e2fsck_pass1_multithread(ctx);
3310         }
3311 #endif
3312         if (need_single)
3313                 e2fsck_pass1_run(ctx);
3314         e2fsck_pass1_post(ctx);
3315 }
3316
3317 #undef FINISH_INODE_LOOP
3318
3319 /*
3320  * When the inode_scan routines call this callback at the end of the
3321  * glock group, call process_inodes.
3322  */
3323 static errcode_t scan_callback(ext2_filsys fs,
3324                                ext2_inode_scan scan EXT2FS_ATTR((unused)),
3325                                dgrp_t group, void * priv_data)
3326 {
3327         struct scan_callback_struct *scan_struct;
3328         e2fsck_t ctx;
3329         struct e2fsck_thread *tinfo;
3330
3331         scan_struct = (struct scan_callback_struct *) priv_data;
3332         ctx = scan_struct->ctx;
3333
3334         process_inodes((e2fsck_t) fs->priv_data, scan_struct->block_buf,
3335                        scan_struct->inodes_to_process,
3336                        scan_struct->process_inode_count);
3337
3338         if (ctx->progress)
3339                 if ((ctx->progress)(ctx, 1, group+1,
3340                                     ctx->fs->group_desc_count))
3341                         return EXT2_ET_CANCEL_REQUESTED;
3342
3343 #ifdef HAVE_PTHREAD
3344         if (ctx->global_ctx) {
3345                 tinfo = &ctx->thread_info;
3346                 tinfo->et_group_next++;
3347                 if (ctx->options & E2F_OPT_DEBUG &&
3348                     ctx->options & E2F_OPT_MULTITHREAD)
3349                         log_out(ctx, _("group %d finished\n"),
3350                                 tinfo->et_group_next);
3351                 if (tinfo->et_group_next >= tinfo->et_group_end)
3352                         return EXT2_ET_SCAN_FINISHED;
3353         }
3354 #endif
3355
3356         return 0;
3357 }
3358
3359 /*
3360  * Process the inodes in the "inodes to process" list.
3361  */
3362 static void process_inodes(e2fsck_t ctx, char *block_buf,
3363                            struct process_inode_block *inodes_to_process,
3364                            int *process_inode_count)
3365 {
3366         int                     i;
3367         struct ext2_inode       *old_stashed_inode;
3368         ext2_ino_t              old_stashed_ino;
3369         const char              *old_operation;
3370         char                    buf[80];
3371         struct problem_context  pctx;
3372
3373 #if 0
3374         printf("begin process_inodes: ");
3375 #endif
3376         if (*process_inode_count == 0)
3377                 return;
3378         old_operation = ehandler_operation(0);
3379         old_stashed_inode = ctx->stashed_inode;
3380         old_stashed_ino = ctx->stashed_ino;
3381         qsort(inodes_to_process, *process_inode_count,
3382                       sizeof(struct process_inode_block), process_inode_cmp);
3383         clear_problem_context(&pctx);
3384         for (i=0; i < *process_inode_count; i++) {
3385                 pctx.inode = ctx->stashed_inode =
3386                         (struct ext2_inode *) &inodes_to_process[i].inode;
3387                 pctx.ino = ctx->stashed_ino = inodes_to_process[i].ino;
3388
3389 #if 0
3390                 printf("%u ", pctx.ino);
3391 #endif
3392                 sprintf(buf, _("reading indirect blocks of inode %u"),
3393                         pctx.ino);
3394                 ehandler_operation(buf);
3395                 check_blocks(ctx, &pctx, block_buf,
3396                              &inodes_to_process[i].ea_ibody_quota);
3397                 if (e2fsck_should_abort(ctx))
3398                         break;
3399         }
3400         ctx->stashed_inode = old_stashed_inode;
3401         ctx->stashed_ino = old_stashed_ino;
3402         *process_inode_count = 0;
3403 #if 0
3404         printf("end process inodes\n");
3405 #endif
3406         ehandler_operation(old_operation);
3407 }
3408
3409 static EXT2_QSORT_TYPE process_inode_cmp(const void *a, const void *b)
3410 {
3411         const struct process_inode_block *ib_a =
3412                 (const struct process_inode_block *) a;
3413         const struct process_inode_block *ib_b =
3414                 (const struct process_inode_block *) b;
3415         int     ret;
3416
3417         ret = (ib_a->inode.i_block[EXT2_IND_BLOCK] -
3418                ib_b->inode.i_block[EXT2_IND_BLOCK]);
3419         if (ret == 0)
3420                 /*
3421                  * We only call process_inodes() for non-extent
3422                  * inodes, so it's OK to pass NULL to
3423                  * ext2fs_file_acl_block() here.
3424                  */
3425                 ret = ext2fs_file_acl_block(0, ext2fs_const_inode(&ib_a->inode)) -
3426                         ext2fs_file_acl_block(0, ext2fs_const_inode(&ib_b->inode));
3427         if (ret == 0)
3428                 ret = ib_a->ino - ib_b->ino;
3429         return ret;
3430 }
3431
3432 /*
3433  * Mark an inode as being bad in some what
3434  */
3435 static void mark_inode_bad(e2fsck_t ctx, ino_t ino)
3436 {
3437         struct          problem_context pctx;
3438
3439         if (!ctx->inode_bad_map) {
3440                 clear_problem_context(&pctx);
3441
3442                 pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
3443                                 _("bad inode map"), EXT2FS_BMAP64_RBTREE,
3444                                 "inode_bad_map", &ctx->inode_bad_map);
3445                 if (pctx.errcode) {
3446                         pctx.num = 3;
3447                         fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
3448                         /* Should never get here */
3449                         ctx->flags |= E2F_FLAG_ABORT;
3450                         return;
3451                 }
3452         }
3453         ext2fs_mark_inode_bitmap2(ctx->inode_bad_map, ino);
3454 }
3455
3456 static void add_casefolded_dir(e2fsck_t ctx, ino_t ino)
3457 {
3458         struct          problem_context pctx;
3459
3460         if (!ctx->casefolded_dirs) {
3461                 pctx.errcode = ext2fs_u32_list_create(&ctx->casefolded_dirs, 0);
3462                 if (pctx.errcode)
3463                         goto error;
3464         }
3465         pctx.errcode = ext2fs_u32_list_add(ctx->casefolded_dirs, ino);
3466         if (pctx.errcode == 0)
3467                 return;
3468 error:
3469         fix_problem(ctx, PR_1_ALLOCATE_CASEFOLDED_DIRLIST, &pctx);
3470         /* Should never get here */
3471         ctx->flags |= E2F_FLAG_ABORT;
3472 }
3473
3474 /*
3475  * This procedure will allocate the inode "bb" (badblock) map table
3476  */
3477 static void alloc_bb_map(e2fsck_t ctx)
3478 {
3479         struct          problem_context pctx;
3480
3481         clear_problem_context(&pctx);
3482         pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
3483                         _("inode in bad block map"), EXT2FS_BMAP64_RBTREE,
3484                         "inode_bb_map", &ctx->inode_bb_map);
3485         if (pctx.errcode) {
3486                 pctx.num = 4;
3487                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
3488                 /* Should never get here */
3489                 ctx->flags |= E2F_FLAG_ABORT;
3490                 return;
3491         }
3492 }
3493
3494 /*
3495  * This procedure will allocate the inode imagic table
3496  */
3497 static void alloc_imagic_map(e2fsck_t ctx)
3498 {
3499         struct          problem_context pctx;
3500
3501         clear_problem_context(&pctx);
3502         pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
3503                         _("imagic inode map"), EXT2FS_BMAP64_RBTREE,
3504                         "inode_imagic_map", &ctx->inode_imagic_map);
3505         if (pctx.errcode) {
3506                 pctx.num = 5;
3507                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
3508                 /* Should never get here */
3509                 ctx->flags |= E2F_FLAG_ABORT;
3510                 return;
3511         }
3512 }
3513
3514 /*
3515  * Marks a block as in use, setting the dup_map if it's been set
3516  * already.  Called by process_block and process_bad_block.
3517  *
3518  * WARNING: Assumes checks have already been done to make sure block
3519  * is valid.  This is true in both process_block and process_bad_block.
3520  */
3521 static _INLINE_ void mark_block_used(e2fsck_t ctx, blk64_t block)
3522 {
3523         struct problem_context pctx;
3524         e2fsck_t global_ctx = ctx->global_ctx ? ctx->global_ctx : ctx;
3525
3526         clear_problem_context(&pctx);
3527
3528         if (is_blocks_used(ctx, block, 1)) {
3529                 if (ext2fs_has_feature_shared_blocks(ctx->fs->super) &&
3530                     !(ctx->options & E2F_OPT_UNSHARE_BLOCKS)) {
3531                         return;
3532                 }
3533                 ctx->flags |= E2F_FLAG_DUP_BLOCK;
3534                 e2fsck_pass1_block_map_w_lock(ctx);
3535                 ext2fs_fast_mark_block_bitmap2(global_ctx->block_dup_map, block);
3536                 e2fsck_pass1_block_map_w_unlock(ctx);
3537         } else {
3538                 ext2fs_fast_mark_block_bitmap2(ctx->block_found_map, block);
3539         }
3540 }
3541
3542 /*
3543  * When cluster size is greater than one block, it is caller's responsibility
3544  * to make sure block parameter starts at a cluster boundary.
3545  */
3546 static _INLINE_ void mark_blocks_used(e2fsck_t ctx, blk64_t block,
3547                                       unsigned int num)
3548 {
3549         if (!is_blocks_used(ctx, block, num)) {
3550                 ext2fs_mark_block_bitmap_range2(ctx->block_found_map, block, num);
3551         } else {
3552                 unsigned int i;
3553
3554                 for (i = 0; i < num; i += EXT2FS_CLUSTER_RATIO(ctx->fs))
3555                         mark_block_used(ctx, block + i);
3556         }
3557 }
3558
3559 static errcode_t _INLINE_ e2fsck_write_ext_attr3(e2fsck_t ctx, blk64_t block,
3560                                                  void *inbuf, ext2_ino_t inum)
3561 {
3562         errcode_t retval;
3563         ext2_filsys fs = ctx->fs;
3564
3565         e2fsck_pass1_fix_lock(ctx);
3566         retval = ext2fs_write_ext_attr3(fs, block, inbuf, inum);
3567         e2fsck_pass1_fix_unlock(ctx);
3568
3569         return retval;
3570 }
3571 /*
3572  * Adjust the extended attribute block's reference counts at the end
3573  * of pass 1, either by subtracting out references for EA blocks that
3574  * are still referenced in ctx->refcount, or by adding references for
3575  * EA blocks that had extra references as accounted for in
3576  * ctx->refcount_extra.
3577  */
3578 static void adjust_extattr_refcount(e2fsck_t ctx, ext2_refcount_t refcount,
3579                                     char *block_buf, int adjust_sign)
3580 {
3581         struct ext2_ext_attr_header     *header;
3582         struct problem_context          pctx;
3583         ext2_filsys                     fs = ctx->fs;
3584         blk64_t                         blk;
3585         __u32                           should_be;
3586         ea_value_t                      count;
3587
3588         clear_problem_context(&pctx);
3589
3590         ea_refcount_intr_begin(refcount);
3591         while (1) {
3592                 if ((blk = ea_refcount_intr_next(refcount, &count)) == 0)
3593                         break;
3594                 pctx.blk = blk;
3595                 pctx.errcode = ext2fs_read_ext_attr3(fs, blk, block_buf,
3596                                                      pctx.ino);
3597                 if (pctx.errcode) {
3598                         fix_problem(ctx, PR_1_EXTATTR_READ_ABORT, &pctx);
3599                         return;
3600                 }
3601                 header = (struct ext2_ext_attr_header *) block_buf;
3602                 pctx.blkcount = header->h_refcount;
3603                 should_be = header->h_refcount + adjust_sign * (int)count;
3604                 pctx.num = should_be;
3605                 if (fix_problem(ctx, PR_1_EXTATTR_REFCOUNT, &pctx)) {
3606                         header->h_refcount = should_be;
3607                         pctx.errcode = e2fsck_write_ext_attr3(ctx, blk,
3608                                                              block_buf,
3609                                                              pctx.ino);
3610                         if (pctx.errcode) {
3611                                 fix_problem(ctx, PR_1_EXTATTR_WRITE_ABORT,
3612                                             &pctx);
3613                                 continue;
3614                         }
3615                 }
3616         }
3617 }
3618
3619 /*
3620  * Handle processing the extended attribute blocks
3621  */
3622 static int check_ext_attr(e2fsck_t ctx, struct problem_context *pctx,
3623                            char *block_buf, struct ea_quota *ea_block_quota)
3624 {
3625         ext2_filsys fs = ctx->fs;
3626         ext2_ino_t      ino = pctx->ino;
3627         struct ext2_inode *inode = pctx->inode;
3628         blk64_t         blk;
3629         char *          end;
3630         struct ext2_ext_attr_header *header;
3631         struct ext2_ext_attr_entry *first, *entry;
3632         blk64_t         quota_blocks = EXT2FS_C2B(fs, 1);
3633         __u64           quota_inodes = 0;
3634         region_t        region = 0;
3635         int             failed_csum = 0;
3636
3637         ea_block_quota->blocks = 0;
3638         ea_block_quota->inodes = 0;
3639
3640         blk = ext2fs_file_acl_block(fs, inode);
3641         if (blk == 0)
3642                 return 0;
3643
3644         /*
3645          * If the Extended attribute flag isn't set, then a non-zero
3646          * file acl means that the inode is corrupted.
3647          *
3648          * Or if the extended attribute block is an invalid block,
3649          * then the inode is also corrupted.
3650          */
3651         if (!ext2fs_has_feature_xattr(fs->super) ||
3652             (blk < fs->super->s_first_data_block) ||
3653             (blk >= ext2fs_blocks_count(fs->super))) {
3654                 mark_inode_bad(ctx, ino);
3655                 return 0;
3656         }
3657
3658         /* If ea bitmap hasn't been allocated, create it */
3659         if (!ctx->block_ea_map) {
3660                 pctx->errcode = e2fsck_allocate_block_bitmap(fs,
3661                                         _("ext attr block map"),
3662                                         EXT2FS_BMAP64_RBTREE, "block_ea_map",
3663                                         &ctx->block_ea_map);
3664                 if (pctx->errcode) {
3665                         pctx->num = 2;
3666                         fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, pctx);
3667                         ctx->flags |= E2F_FLAG_ABORT;
3668                         return 0;
3669                 }
3670         }
3671
3672         /* Create the EA refcount structure if necessary */
3673         if (!ctx->refcount) {
3674                 pctx->errcode = ea_refcount_create(0,
3675                                         &ctx->refcount_orig);
3676                 if (pctx->errcode) {
3677                         pctx->num = 1;
3678                         fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
3679                         ctx->flags |= E2F_FLAG_ABORT;
3680                         return 0;
3681                 }
3682
3683                 pctx->errcode = ea_refcount_create(0, &ctx->refcount);
3684                 if (pctx->errcode) {
3685                         pctx->num = 1;
3686                         fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
3687                         ctx->flags |= E2F_FLAG_ABORT;
3688                         return 0;
3689                 }
3690         }
3691
3692 #if 0
3693         /* Debugging text */
3694         printf("Inode %u has EA block %u\n", ino, blk);
3695 #endif
3696
3697         /* Have we seen this EA block before? */
3698         if (ext2fs_fast_test_block_bitmap2(ctx->block_ea_map, blk)) {
3699                 ea_block_quota->blocks = EXT2FS_C2B(fs, 1);
3700                 ea_block_quota->inodes = 0;
3701
3702                 if (ctx->ea_block_quota_blocks) {
3703                         ea_refcount_fetch(ctx->ea_block_quota_blocks, blk,
3704                                           &quota_blocks);
3705                         if (quota_blocks)
3706                                 ea_block_quota->blocks = quota_blocks;
3707                 }
3708
3709                 if (ctx->ea_block_quota_inodes)
3710                         ea_refcount_fetch(ctx->ea_block_quota_inodes, blk,
3711                                           &ea_block_quota->inodes);
3712
3713                 if (ea_refcount_decrement(ctx->refcount, blk, 0) == 0)
3714                         return 1;
3715                 /* Ooops, this EA was referenced more than it stated */
3716                 if (!ctx->refcount_extra) {
3717                         pctx->errcode = ea_refcount_create(0,
3718                                            &ctx->refcount_extra);
3719                         if (pctx->errcode) {
3720                                 pctx->num = 2;
3721                                 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
3722                                 ctx->flags |= E2F_FLAG_ABORT;
3723                                 return 0;
3724                         }
3725                 }
3726                 ea_refcount_increment(ctx->refcount_extra, blk, 0);
3727                 return 1;
3728         }
3729
3730         /*
3731          * OK, we haven't seen this EA block yet.  So we need to
3732          * validate it
3733          */
3734         pctx->blk = blk;
3735         pctx->errcode = ext2fs_read_ext_attr3(fs, blk, block_buf, pctx->ino);
3736         if (pctx->errcode == EXT2_ET_EXT_ATTR_CSUM_INVALID) {
3737                 pctx->errcode = 0;
3738                 failed_csum = 1;
3739         } else if (pctx->errcode == EXT2_ET_BAD_EA_HEADER)
3740                 pctx->errcode = 0;
3741
3742         if (pctx->errcode &&
3743             fix_problem(ctx, PR_1_READ_EA_BLOCK, pctx)) {
3744                 pctx->errcode = 0;
3745                 goto clear_extattr;
3746         }
3747         header = (struct ext2_ext_attr_header *) block_buf;
3748         pctx->blk = ext2fs_file_acl_block(fs, inode);
3749         if (((ctx->ext_attr_ver == 1) &&
3750              (header->h_magic != EXT2_EXT_ATTR_MAGIC_v1)) ||
3751             ((ctx->ext_attr_ver == 2) &&
3752              (header->h_magic != EXT2_EXT_ATTR_MAGIC))) {
3753                 if (fix_problem(ctx, PR_1_BAD_EA_BLOCK, pctx))
3754                         goto clear_extattr;
3755         }
3756
3757         if (header->h_blocks != 1) {
3758                 if (fix_problem(ctx, PR_1_EA_MULTI_BLOCK, pctx))
3759                         goto clear_extattr;
3760         }
3761
3762         if (pctx->errcode && fix_problem(ctx, PR_1_READ_EA_BLOCK, pctx))
3763                 goto clear_extattr;
3764
3765         region = region_create(0, fs->blocksize);
3766         if (!region) {
3767                 fix_problem(ctx, PR_1_EA_ALLOC_REGION_ABORT, pctx);
3768                 ctx->flags |= E2F_FLAG_ABORT;
3769                 return 0;
3770         }
3771         if (region_allocate(region, 0, sizeof(struct ext2_ext_attr_header))) {
3772                 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
3773                         goto clear_extattr;
3774         }
3775
3776         first = (struct ext2_ext_attr_entry *)(header+1);
3777         end = block_buf + fs->blocksize;
3778         entry = first;
3779         while ((char *)entry < end && *(__u32 *)entry) {
3780                 __u32 hash;
3781
3782                 if (region_allocate(region, (char *)entry - (char *)header,
3783                                    EXT2_EXT_ATTR_LEN(entry->e_name_len))) {
3784                         if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
3785                                 goto clear_extattr;
3786                         break;
3787                 }
3788                 if ((ctx->ext_attr_ver == 1 &&
3789                      (entry->e_name_len == 0 || entry->e_name_index != 0)) ||
3790                     (ctx->ext_attr_ver == 2 &&
3791                      entry->e_name_index == 0)) {
3792                         if (fix_problem(ctx, PR_1_EA_BAD_NAME, pctx))
3793                                 goto clear_extattr;
3794                         break;
3795                 }
3796                 if (entry->e_value_inum == 0) {
3797                         if (entry->e_value_offs + entry->e_value_size >
3798                             fs->blocksize) {
3799                                 if (fix_problem(ctx, PR_1_EA_BAD_VALUE, pctx))
3800                                         goto clear_extattr;
3801                                 break;
3802                         }
3803                         if (entry->e_value_size &&
3804                             region_allocate(region, entry->e_value_offs,
3805                                             EXT2_EXT_ATTR_SIZE(entry->e_value_size))) {
3806                                 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION,
3807                                                 pctx))
3808                                         goto clear_extattr;
3809                         }
3810
3811                         hash = ext2fs_ext_attr_hash_entry(entry, block_buf +
3812                                                           entry->e_value_offs);
3813
3814                         if (entry->e_hash != hash) {
3815                                 pctx->num = entry->e_hash;
3816                                 if (fix_problem(ctx, PR_1_ATTR_HASH, pctx))
3817                                         goto clear_extattr;
3818                                 entry->e_hash = hash;
3819                         }
3820                 } else {
3821                         problem_t problem;
3822                         blk64_t entry_quota_blocks;
3823
3824                         problem = check_large_ea_inode(ctx, entry, pctx,
3825                                                        &entry_quota_blocks);
3826                         if (problem && fix_problem(ctx, problem, pctx))
3827                                 goto clear_extattr;
3828
3829                         quota_blocks += entry_quota_blocks;
3830                         quota_inodes++;
3831                 }
3832
3833                 entry = EXT2_EXT_ATTR_NEXT(entry);
3834         }
3835         if (region_allocate(region, (char *)entry - (char *)header, 4)) {
3836                 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
3837                         goto clear_extattr;
3838         }
3839         region_free(region);
3840
3841         /*
3842          * We only get here if there was no other errors that were fixed.
3843          * If there was a checksum fail, ask to correct it.
3844          */
3845         if (failed_csum &&
3846             fix_problem(ctx, PR_1_EA_BLOCK_ONLY_CSUM_INVALID, pctx)) {
3847                 pctx->errcode = e2fsck_write_ext_attr3(ctx, blk, block_buf,
3848                                                        pctx->ino);
3849                 if (pctx->errcode)
3850                         return 0;
3851         }
3852
3853         if (quota_blocks != EXT2FS_C2B(fs, 1U)) {
3854                 if (!ctx->ea_block_quota_blocks) {
3855                         pctx->errcode = ea_refcount_create(0,
3856                                                 &ctx->ea_block_quota_blocks);
3857                         if (pctx->errcode) {
3858                                 pctx->num = 3;
3859                                 goto refcount_fail;
3860                         }
3861                 }
3862                 ea_refcount_store(ctx->ea_block_quota_blocks, blk,
3863                                   quota_blocks);
3864         }
3865
3866         if (quota_inodes) {
3867                 if (!ctx->ea_block_quota_inodes) {
3868                         pctx->errcode = ea_refcount_create(0,
3869                                                 &ctx->ea_block_quota_inodes);
3870                         if (pctx->errcode) {
3871                                 pctx->num = 4;
3872 refcount_fail:
3873                                 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
3874                                 ctx->flags |= E2F_FLAG_ABORT;
3875                                 return 0;
3876                         }
3877                 }
3878
3879                 ea_refcount_store(ctx->ea_block_quota_inodes, blk,
3880                                   quota_inodes);
3881         }
3882         ea_block_quota->blocks = quota_blocks;
3883         ea_block_quota->inodes = quota_inodes;
3884
3885         inc_ea_inode_refs(ctx, pctx, first, end);
3886         ea_refcount_store(ctx->refcount, blk, header->h_refcount - 1);
3887         ea_refcount_store(ctx->refcount_orig, blk, header->h_refcount);
3888         /**
3889          * It might be racy that this block has been merged in the
3890          * global found map.
3891          */
3892         if (!is_blocks_used(ctx, blk, 1))
3893                 ext2fs_fast_mark_block_bitmap2(ctx->block_found_map, blk);
3894         ext2fs_fast_mark_block_bitmap2(ctx->block_ea_map, blk);
3895         return 1;
3896
3897 clear_extattr:
3898         if (region)
3899                 region_free(region);
3900         ext2fs_file_acl_block_set(fs, inode, 0);
3901         e2fsck_write_inode(ctx, ino, inode, "check_ext_attr");
3902         return 0;
3903 }
3904
3905 /* Returns 1 if bad htree, 0 if OK */
3906 static int handle_htree(e2fsck_t ctx, struct problem_context *pctx,
3907                         ext2_ino_t ino, struct ext2_inode *inode,
3908                         char *block_buf)
3909 {
3910         struct ext2_dx_root_info        *root;
3911         ext2_filsys                     fs = ctx->fs;
3912         errcode_t                       retval;
3913         blk64_t                         blk;
3914
3915         if ((!LINUX_S_ISDIR(inode->i_mode) &&
3916              fix_problem(ctx, PR_1_HTREE_NODIR, pctx)) ||
3917             (!ext2fs_has_feature_dir_index(fs->super) &&
3918              fix_problem(ctx, PR_1_HTREE_SET, pctx)))
3919                 return 1;
3920
3921         pctx->errcode = ext2fs_bmap2(fs, ino, inode, 0, 0, 0, 0, &blk);
3922
3923         if ((pctx->errcode) ||
3924             (blk == 0) ||
3925             (blk < fs->super->s_first_data_block) ||
3926             (blk >= ext2fs_blocks_count(fs->super))) {
3927                 if (fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
3928                         return 1;
3929                 else
3930                         return 0;
3931         }
3932
3933         retval = io_channel_read_blk64(fs->io, blk, 1, block_buf);
3934         if (retval && fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
3935                 return 1;
3936
3937         /* XXX should check that beginning matches a directory */
3938         root = (struct ext2_dx_root_info *) (block_buf + 24);
3939
3940         if ((root->reserved_zero || root->info_length < 8) &&
3941             fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
3942                 return 1;
3943
3944         pctx->num = root->hash_version;
3945         if ((root->hash_version != EXT2_HASH_LEGACY) &&
3946             (root->hash_version != EXT2_HASH_HALF_MD4) &&
3947             (root->hash_version != EXT2_HASH_TEA) &&
3948             (root->hash_version != EXT2_HASH_SIPHASH) &&
3949             fix_problem(ctx, PR_1_HTREE_HASHV, pctx))
3950                 return 1;
3951
3952         if (ext4_hash_in_dirent(inode)) {
3953                 if (root->hash_version != EXT2_HASH_SIPHASH &&
3954                     fix_problem(ctx, PR_1_HTREE_NEEDS_SIPHASH, pctx))
3955                         return 1;
3956         } else {
3957                 if (root->hash_version == EXT2_HASH_SIPHASH &&
3958                    fix_problem(ctx, PR_1_HTREE_CANNOT_SIPHASH, pctx))
3959                         return 1;
3960         }
3961
3962         if ((root->unused_flags & EXT2_HASH_FLAG_INCOMPAT) &&
3963             fix_problem(ctx, PR_1_HTREE_INCOMPAT, pctx))
3964                 return 1;
3965
3966         pctx->num = root->indirect_levels;
3967         /* if htree level is clearly too high, consider it to be broken */
3968         if (root->indirect_levels > EXT4_HTREE_LEVEL &&
3969             fix_problem(ctx, PR_1_HTREE_DEPTH, pctx))
3970                 return 1;
3971
3972         /* if level is only maybe too high, LARGE_DIR feature could be unset */
3973         if (root->indirect_levels > ext2_dir_htree_level(fs) &&
3974             !ext2fs_has_feature_largedir(fs->super)) {
3975                 int blockbits = EXT2_BLOCK_SIZE_BITS(fs->super) + 10;
3976                 int idx_pb = 1 << (blockbits - 3);
3977
3978                 /* compare inode size/blocks vs. max-sized 2-level htree */
3979                 if (EXT2_I_SIZE(pctx->inode) <
3980                     (idx_pb - 1) * (idx_pb - 2) << blockbits &&
3981                     pctx->inode->i_blocks <
3982                     (idx_pb - 1) * (idx_pb - 2) << (blockbits - 9) &&
3983                     fix_problem(ctx, PR_1_HTREE_DEPTH, pctx))
3984                         return 1;
3985         }
3986
3987         if (root->indirect_levels > EXT4_HTREE_LEVEL_COMPAT ||
3988             ext2fs_needs_large_file_feature(EXT2_I_SIZE(inode)))
3989                 ctx->large_dirs++;
3990
3991         return 0;
3992 }
3993
3994 void e2fsck_clear_inode(e2fsck_t ctx, ext2_ino_t ino,
3995                         struct ext2_inode *inode, int restart_flag,
3996                         const char *source)
3997 {
3998         inode->i_flags = 0;
3999         inode->i_links_count = 0;
4000         ext2fs_icount_store(ctx->inode_link_info, ino, 0);
4001         inode->i_dtime = ctx->now;
4002
4003         /*
4004          * If a special inode has such rotten block mappings that we
4005          * want to clear the whole inode, be sure to actually zap
4006          * the block maps because i_links_count isn't checked for
4007          * special inodes, and we'll end up right back here the next
4008          * time we run fsck.
4009          */
4010         if (ino < EXT2_FIRST_INODE(ctx->fs->super))
4011                 memset(inode->i_block, 0, sizeof(inode->i_block));
4012
4013         ext2fs_unmark_inode_bitmap2(ctx->inode_dir_map, ino);
4014         ext2fs_unmark_inode_bitmap2(ctx->inode_used_map, ino);
4015         if (ctx->inode_reg_map)
4016                 ext2fs_unmark_inode_bitmap2(ctx->inode_reg_map, ino);
4017         if (ctx->inode_bad_map)
4018                 ext2fs_unmark_inode_bitmap2(ctx->inode_bad_map, ino);
4019
4020         /*
4021          * If the inode was partially accounted for before processing
4022          * was aborted, we need to restart the pass 1 scan.
4023          */
4024         ctx->flags |= restart_flag;
4025
4026         if (ino == EXT2_BAD_INO)
4027                 memset(inode, 0, sizeof(struct ext2_inode));
4028
4029         e2fsck_write_inode(ctx, ino, inode, source);
4030 }
4031
4032 /*
4033  * Use the multiple-blocks reclamation code to fix alignment problems in
4034  * a bigalloc filesystem.  We want a logical cluster to map to *only* one
4035  * physical cluster, and we want the block offsets within that cluster to
4036  * line up.
4037  */
4038 static int has_unaligned_cluster_map(e2fsck_t ctx,
4039                                      blk64_t last_pblk, blk64_t last_lblk,
4040                                      blk64_t pblk, blk64_t lblk)
4041 {
4042         blk64_t cluster_mask;
4043
4044         if (!ctx->fs->cluster_ratio_bits)
4045                 return 0;
4046         cluster_mask = EXT2FS_CLUSTER_MASK(ctx->fs);
4047
4048         /*
4049          * If the block in the logical cluster doesn't align with the block in
4050          * the physical cluster...
4051          */
4052         if ((lblk & cluster_mask) != (pblk & cluster_mask))
4053                 return 1;
4054
4055         /*
4056          * If we cross a physical cluster boundary within a logical cluster...
4057          */
4058         if (last_pblk && (lblk & cluster_mask) != 0 &&
4059             EXT2FS_B2C(ctx->fs, lblk) == EXT2FS_B2C(ctx->fs, last_lblk) &&
4060             EXT2FS_B2C(ctx->fs, pblk) != EXT2FS_B2C(ctx->fs, last_pblk))
4061                 return 1;
4062
4063         return 0;
4064 }
4065
4066 static void scan_extent_node(e2fsck_t ctx, struct problem_context *pctx,
4067                              struct process_block_struct *pb,
4068                              blk64_t start_block, blk64_t end_block,
4069                              blk64_t eof_block,
4070                              ext2_extent_handle_t ehandle,
4071                              int try_repairs)
4072 {
4073         struct ext2fs_extent    extent;
4074         blk64_t                 blk, last_lblk;
4075         unsigned int            i, n;
4076         int                     is_dir, is_leaf;
4077         problem_t               problem;
4078         struct ext2_extent_info info;
4079         int                     failed_csum = 0;
4080
4081         if (pctx->errcode == EXT2_ET_EXTENT_CSUM_INVALID)
4082                 failed_csum = 1;
4083
4084         pctx->errcode = ext2fs_extent_get_info(ehandle, &info);
4085         if (pctx->errcode)
4086                 return;
4087         if (!(ctx->options & E2F_OPT_FIXES_ONLY) &&
4088             !pb->eti.force_rebuild) {
4089                 struct extent_tree_level *etl;
4090
4091                 etl = pb->eti.ext_info + info.curr_level;
4092                 etl->num_extents += info.num_entries;
4093                 etl->max_extents += info.max_entries;
4094                 /*
4095                  * Implementation wart: Splitting extent blocks when appending
4096                  * will leave the old block with one free entry.  Therefore
4097                  * unless the node is totally full, pretend that a non-root
4098                  * extent block can hold one fewer entry than it actually does,
4099                  * so that we don't repeatedly rebuild the extent tree.
4100                  */
4101                 if (info.curr_level && info.num_entries < info.max_entries)
4102                         etl->max_extents--;
4103         }
4104
4105         pctx->errcode = ext2fs_extent_get(ehandle, EXT2_EXTENT_FIRST_SIB,
4106                                           &extent);
4107         while ((pctx->errcode == 0 ||
4108                 pctx->errcode == EXT2_ET_EXTENT_CSUM_INVALID) &&
4109                info.num_entries-- > 0) {
4110                 is_leaf = extent.e_flags & EXT2_EXTENT_FLAGS_LEAF;
4111                 is_dir = LINUX_S_ISDIR(pctx->inode->i_mode);
4112                 last_lblk = extent.e_lblk + extent.e_len - 1;
4113
4114                 problem = 0;
4115                 pctx->blk = extent.e_pblk;
4116                 pctx->blk2 = extent.e_lblk;
4117                 pctx->num = extent.e_len;
4118                 pctx->blkcount = extent.e_lblk + extent.e_len;
4119
4120                 if (extent.e_pblk == 0 ||
4121                     extent.e_pblk < ctx->fs->super->s_first_data_block ||
4122                     extent.e_pblk >= ext2fs_blocks_count(ctx->fs->super))
4123                         problem = PR_1_EXTENT_BAD_START_BLK;
4124                 else if (extent.e_lblk < start_block)
4125                         problem = PR_1_OUT_OF_ORDER_EXTENTS;
4126                 else if ((end_block && last_lblk > end_block) &&
4127                          !(last_lblk > eof_block &&
4128                            ((extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT) ||
4129                             (pctx->inode->i_flags & EXT4_VERITY_FL))))
4130                         problem = PR_1_EXTENT_END_OUT_OF_BOUNDS;
4131                 else if (is_leaf && extent.e_len == 0)
4132                         problem = PR_1_EXTENT_LENGTH_ZERO;
4133                 else if (is_leaf &&
4134                          (extent.e_pblk + extent.e_len) >
4135                          ext2fs_blocks_count(ctx->fs->super))
4136                         problem = PR_1_EXTENT_ENDS_BEYOND;
4137                 else if (is_leaf && is_dir && !pctx->inode->i_size_high &&
4138                          !ext2fs_has_feature_largedir(ctx->fs->super) &&
4139                          ((extent.e_lblk + extent.e_len) >
4140                           (1U << (21 - ctx->fs->super->s_log_block_size))))
4141                         problem = PR_1_TOOBIG_DIR;
4142
4143                 if (is_leaf && problem == 0 && extent.e_len > 0) {
4144 #if 0
4145                         printf("extent_region(ino=%u, expect=%llu, "
4146                                "lblk=%llu, len=%u)\n", pb->ino,
4147                                (unsigned long long) pb->next_lblock,
4148                                (unsigned long long) extent.e_lblk,
4149                                extent.e_len);
4150 #endif
4151                         if (extent.e_lblk < pb->next_lblock)
4152                                 problem = PR_1_EXTENT_COLLISION;
4153                         else if (extent.e_lblk + extent.e_len > pb->next_lblock)
4154                                 pb->next_lblock = extent.e_lblk + extent.e_len;
4155                 }
4156
4157                 /*
4158                  * Uninitialized blocks in a directory?  Clear the flag and
4159                  * we'll interpret the blocks later.
4160                  */
4161                 if (try_repairs && is_dir && problem == 0 &&
4162                     (extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT) &&
4163                     fix_problem(ctx, PR_1_UNINIT_DBLOCK, pctx)) {
4164                         e2fsck_pass1_fix_lock(ctx);
4165                         extent.e_flags &= ~EXT2_EXTENT_FLAGS_UNINIT;
4166                         pb->inode_modified = 1;
4167                         pctx->errcode = ext2fs_extent_replace(ehandle, 0,
4168                                                               &extent);
4169                         e2fsck_pass1_fix_unlock(ctx);
4170                         if (pctx->errcode)
4171                                 return;
4172                         failed_csum = 0;
4173                 }
4174 #ifdef CONFIG_DEVELOPER_FEATURES
4175                 if (try_repairs && !is_dir && problem == 0 &&
4176                     (ctx->options & E2F_OPT_CLEAR_UNINIT) &&
4177                     (extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT) &&
4178                     fix_problem(ctx, PR_1_CLEAR_UNINIT_EXTENT, pctx)) {
4179                         extent.e_flags &= ~EXT2_EXTENT_FLAGS_UNINIT;
4180                         pb->inode_modified = 1;
4181                         pctx->errcode = ext2fs_extent_replace(ehandle, 0,
4182                                                               &extent);
4183                         if (pctx->errcode)
4184                                 return;
4185                         failed_csum = 0;
4186                 }
4187 #endif
4188                 if (try_repairs && problem) {
4189 report_problem:
4190                         if (fix_problem(ctx, problem, pctx)) {
4191                                 if (ctx->invalid_bitmaps) {
4192                                         /*
4193                                          * If fsck knows the bitmaps are bad,
4194                                          * skip to the next extent and
4195                                          * try to clear this extent again
4196                                          * after fixing the bitmaps, by
4197                                          * restarting fsck.
4198                                          */
4199                                         pctx->errcode = ext2fs_extent_get(
4200                                                           ehandle,
4201                                                           EXT2_EXTENT_NEXT_SIB,
4202                                                           &extent);
4203                                         ctx->flags |= E2F_FLAG_RESTART_LATER;
4204                                         if (pctx->errcode ==
4205                                                     EXT2_ET_NO_CURRENT_NODE) {
4206                                                 pctx->errcode = 0;
4207                                                 break;
4208                                         }
4209                                         continue;
4210                                 }
4211                                 e2fsck_pass1_fix_lock(ctx);
4212                                 e2fsck_read_bitmaps(ctx);
4213                                 pb->inode_modified = 1;
4214                                 pctx->errcode =
4215                                         ext2fs_extent_delete(ehandle, 0);
4216                                 e2fsck_pass1_fix_unlock(ctx);
4217                                 if (pctx->errcode) {
4218                                         pctx->str = "ext2fs_extent_delete";
4219                                         return;
4220                                 }
4221                                 e2fsck_pass1_fix_lock(ctx);
4222                                 pctx->errcode = ext2fs_extent_fix_parents(ehandle);
4223                                 e2fsck_pass1_fix_unlock(ctx);
4224                                 if (pctx->errcode &&
4225                                     pctx->errcode != EXT2_ET_NO_CURRENT_NODE) {
4226                                         pctx->str = "ext2fs_extent_fix_parents";
4227                                         return;
4228                                 }
4229                                 pctx->errcode = ext2fs_extent_get(ehandle,
4230                                                                   EXT2_EXTENT_CURRENT,
4231                                                                   &extent);
4232                                 if (pctx->errcode == EXT2_ET_NO_CURRENT_NODE) {
4233                                         pctx->errcode = 0;
4234                                         break;
4235                                 }
4236                                 failed_csum = 0;
4237                                 continue;
4238                         }
4239                         goto next;
4240                 }
4241
4242                 if (!is_leaf) {
4243                         blk64_t lblk = extent.e_lblk;
4244                         int next_try_repairs = 1;
4245
4246                         blk = extent.e_pblk;
4247
4248                         /*
4249                          * If this lower extent block collides with critical
4250                          * metadata, don't try to repair the damage.  Pass 1b
4251                          * will reallocate the block; then we can try again.
4252                          */
4253                         if (pb->ino != EXT2_RESIZE_INO &&
4254                             extent.e_pblk < ctx->fs->super->s_blocks_count &&
4255                             ext2fs_test_block_bitmap2(ctx->block_metadata_map,
4256                                                       extent.e_pblk)) {
4257                                 next_try_repairs = 0;
4258                                 pctx->blk = blk;
4259                                 fix_problem(ctx,
4260                                             PR_1_CRITICAL_METADATA_COLLISION,
4261                                             pctx);
4262                                 if ((ctx->options & E2F_OPT_NO) == 0)
4263                                         ctx->flags |= E2F_FLAG_RESTART_LATER;
4264                         }
4265                         pctx->errcode = ext2fs_extent_get(ehandle,
4266                                                   EXT2_EXTENT_DOWN, &extent);
4267                         if (pctx->errcode &&
4268                             pctx->errcode != EXT2_ET_EXTENT_CSUM_INVALID) {
4269                                 pctx->str = "EXT2_EXTENT_DOWN";
4270                                 problem = PR_1_EXTENT_HEADER_INVALID;
4271                                 if (!next_try_repairs)
4272                                         return;
4273                                 if (pctx->errcode == EXT2_ET_EXTENT_HEADER_BAD)
4274                                         goto report_problem;
4275                                 return;
4276                         }
4277                         /* The next extent should match this index's logical start */
4278                         if (extent.e_lblk != lblk) {
4279                                 struct ext2_extent_info e_info;
4280
4281                                 pctx->errcode = ext2fs_extent_get_info(ehandle,
4282                                                                        &e_info);
4283                                 if (pctx->errcode) {
4284                                         pctx->str = "ext2fs_extent_get_info";
4285                                         return;
4286                                 }
4287                                 pctx->blk = lblk;
4288                                 pctx->blk2 = extent.e_lblk;
4289                                 pctx->num = e_info.curr_level - 1;
4290                                 problem = PR_1_EXTENT_INDEX_START_INVALID;
4291                                 if (fix_problem(ctx, problem, pctx)) {
4292                                         e2fsck_pass1_fix_lock(ctx);
4293                                         pb->inode_modified = 1;
4294                                         pctx->errcode =
4295                                                 ext2fs_extent_fix_parents(ehandle);
4296                                         e2fsck_pass1_fix_unlock(ctx);
4297                                         if (pctx->errcode) {
4298                                                 pctx->str = "ext2fs_extent_fix_parents";
4299                                                 return;
4300                                         }
4301                                 }
4302                         }
4303                         scan_extent_node(ctx, pctx, pb, extent.e_lblk,
4304                                          last_lblk, eof_block, ehandle,
4305                                          next_try_repairs);
4306                         if (pctx->errcode)
4307                                 return;
4308                         pctx->errcode = ext2fs_extent_get(ehandle,
4309                                                   EXT2_EXTENT_UP, &extent);
4310                         if (pctx->errcode) {
4311                                 pctx->str = "EXT2_EXTENT_UP";
4312                                 return;
4313                         }
4314                         mark_block_used(ctx, blk);
4315                         pb->num_blocks++;
4316                         goto next;
4317                 }
4318
4319                 if ((pb->previous_block != 0) &&
4320                     (pb->previous_block+1 != extent.e_pblk)) {
4321                         if (ctx->options & E2F_OPT_FRAGCHECK) {
4322                                 char type = '?';
4323
4324                                 if (pb->is_dir)
4325                                         type = 'd';
4326                                 else if (pb->is_reg)
4327                                         type = 'f';
4328
4329                                 printf(("%6lu(%c): expecting %6lu "
4330                                         "actual extent "
4331                                         "phys %6lu log %lu len %lu\n"),
4332                                        (unsigned long) pctx->ino, type,
4333                                        (unsigned long) pb->previous_block+1,
4334                                        (unsigned long) extent.e_pblk,
4335                                        (unsigned long) extent.e_lblk,
4336                                        (unsigned long) extent.e_len);
4337                         }
4338                         pb->fragmented = 1;
4339                 }
4340                 /*
4341                  * If we notice a gap in the logical block mappings of an
4342                  * extent-mapped directory, offer to close the hole by
4343                  * moving the logical block down, otherwise we'll go mad in
4344                  * pass 3 allocating empty directory blocks to fill the hole.
4345                  */
4346                 if (try_repairs && is_dir &&
4347                     pb->last_block + 1 < extent.e_lblk) {
4348                         blk64_t new_lblk;
4349
4350                         new_lblk = pb->last_block + 1;
4351                         if (EXT2FS_CLUSTER_RATIO(ctx->fs) > 1)
4352                                 new_lblk = ((new_lblk +
4353                                              EXT2FS_CLUSTER_RATIO(ctx->fs) - 1) &
4354                                             ~EXT2FS_CLUSTER_MASK(ctx->fs)) |
4355                                            (extent.e_pblk &
4356                                             EXT2FS_CLUSTER_MASK(ctx->fs));
4357                         pctx->blk = extent.e_lblk;
4358                         pctx->blk2 = new_lblk;
4359                         if (fix_problem(ctx, PR_1_COLLAPSE_DBLOCK, pctx)) {
4360                                 e2fsck_pass1_fix_lock(ctx);
4361                                 extent.e_lblk = new_lblk;
4362                                 pb->inode_modified = 1;
4363                                 pctx->errcode = ext2fs_extent_replace(ehandle,
4364                                                                 0, &extent);
4365                                 e2fsck_pass1_fix_unlock(ctx);
4366                                 if (pctx->errcode) {
4367                                         pctx->errcode = 0;
4368                                         goto alloc_later;
4369                                 }
4370                                 e2fsck_pass1_fix_lock(ctx);
4371                                 pctx->errcode = ext2fs_extent_fix_parents(ehandle);
4372                                 e2fsck_pass1_fix_unlock(ctx);
4373                                 if (pctx->errcode)
4374                                         goto failed_add_dir_block;
4375                                 pctx->errcode = ext2fs_extent_goto(ehandle,
4376                                                                 extent.e_lblk);
4377                                 if (pctx->errcode)
4378                                         goto failed_add_dir_block;
4379                                 last_lblk = extent.e_lblk + extent.e_len - 1;
4380                                 failed_csum = 0;
4381                         }
4382                 }
4383 alloc_later:
4384                 if (is_dir) {
4385                         while (++pb->last_db_block <
4386                                (e2_blkcnt_t) extent.e_lblk) {
4387                                 pctx->errcode = ext2fs_add_dir_block2(
4388                                                         ctx->fs->dblist,
4389                                                         pb->ino, 0,
4390                                                         pb->last_db_block);
4391                                 if (pctx->errcode) {
4392                                         pctx->blk = 0;
4393                                         pctx->num = pb->last_db_block;
4394                                         goto failed_add_dir_block;
4395                                 }
4396                         }
4397
4398                         for (i = 0; i < extent.e_len; i++) {
4399                                 pctx->errcode = ext2fs_add_dir_block2(
4400                                                         ctx->fs->dblist,
4401                                                         pctx->ino,
4402                                                         extent.e_pblk + i,
4403                                                         extent.e_lblk + i);
4404                                 if (pctx->errcode) {
4405                                         pctx->blk = extent.e_pblk + i;
4406                                         pctx->num = extent.e_lblk + i;
4407                                 failed_add_dir_block:
4408                                         fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
4409                                         /* Should never get here */
4410                                         ctx->flags |= E2F_FLAG_ABORT;
4411                                         return;
4412                                 }
4413                         }
4414                         if (extent.e_len > 0)
4415                                 pb->last_db_block = extent.e_lblk + extent.e_len - 1;
4416                 }
4417                 if (has_unaligned_cluster_map(ctx, pb->previous_block,
4418                                               pb->last_block,
4419                                               extent.e_pblk,
4420                                               extent.e_lblk)) {
4421                         for (i = 0; i < extent.e_len; i++) {
4422                                 pctx->blk = extent.e_lblk + i;
4423                                 pctx->blk2 = extent.e_pblk + i;
4424                                 fix_problem(ctx, PR_1_MISALIGNED_CLUSTER, pctx);
4425                                 mark_block_used(ctx, extent.e_pblk + i);
4426                                 mark_block_used(ctx, extent.e_pblk + i);
4427                         }
4428                 }
4429
4430                 /*
4431                  * Check whether first cluster got marked in previous iteration.
4432                  */
4433                 if (ctx->fs->cluster_ratio_bits &&
4434                     pb->previous_block &&
4435                     (EXT2FS_B2C(ctx->fs, extent.e_pblk) ==
4436                      EXT2FS_B2C(ctx->fs, pb->previous_block)))
4437                         /* Set blk to the beginning of next cluster. */
4438                         blk = EXT2FS_C2B(
4439                                 ctx->fs,
4440                                 EXT2FS_B2C(ctx->fs, extent.e_pblk) + 1);
4441                 else
4442                         /* Set blk to the beginning of current cluster. */
4443                         blk = EXT2FS_C2B(ctx->fs,
4444                                          EXT2FS_B2C(ctx->fs, extent.e_pblk));
4445
4446                 if (blk < extent.e_pblk + extent.e_len) {
4447                         mark_blocks_used(ctx, blk,
4448                                          extent.e_pblk + extent.e_len - blk);
4449                         n = DIV_ROUND_UP(extent.e_pblk + extent.e_len - blk,
4450                                          EXT2FS_CLUSTER_RATIO(ctx->fs));
4451                         pb->num_blocks += n;
4452                 }
4453                 pb->last_block = extent.e_lblk + extent.e_len - 1;
4454                 pb->previous_block = extent.e_pblk + extent.e_len - 1;
4455                 start_block = pb->last_block = last_lblk;
4456                 if (is_leaf && !is_dir &&
4457                     !(extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT))
4458                         pb->last_init_lblock = last_lblk;
4459         next:
4460                 pctx->errcode = ext2fs_extent_get(ehandle,
4461                                                   EXT2_EXTENT_NEXT_SIB,
4462                                                   &extent);
4463         }
4464
4465         /* Failed csum but passes checks?  Ask to fix checksum. */
4466         if (failed_csum &&
4467             fix_problem(ctx, PR_1_EXTENT_ONLY_CSUM_INVALID, pctx)) {
4468                 e2fsck_pass1_fix_lock(ctx);
4469                 pb->inode_modified = 1;
4470                 pctx->errcode = ext2fs_extent_replace(ehandle, 0, &extent);
4471                 e2fsck_pass1_fix_unlock(ctx);
4472                 if (pctx->errcode)
4473                         return;
4474         }
4475
4476         if (pctx->errcode == EXT2_ET_EXTENT_NO_NEXT)
4477                 pctx->errcode = 0;
4478 }
4479
4480 static void check_blocks_extents(e2fsck_t ctx, struct problem_context *pctx,
4481                                  struct process_block_struct *pb)
4482 {
4483         struct ext2_extent_info info;
4484         struct ext2_inode       *inode = pctx->inode;
4485         ext2_extent_handle_t    ehandle;
4486         ext2_filsys             fs = ctx->fs;
4487         ext2_ino_t              ino = pctx->ino;
4488         errcode_t               retval;
4489         blk64_t                 eof_lblk;
4490         struct ext3_extent_header       *eh;
4491
4492         /* Check for a proper extent header... */
4493         eh = (struct ext3_extent_header *) &inode->i_block[0];
4494         retval = ext2fs_extent_header_verify(eh, sizeof(inode->i_block));
4495         if (retval) {
4496                 if (fix_problem(ctx, PR_1_MISSING_EXTENT_HEADER, pctx))
4497                         e2fsck_clear_inode(ctx, ino, inode, 0,
4498                                            "check_blocks_extents");
4499                 pctx->errcode = 0;
4500                 return;
4501         }
4502
4503         /* ...since this function doesn't fail if i_block is zeroed. */
4504         pctx->errcode = ext2fs_extent_open2(fs, ino, inode, &ehandle);
4505         if (pctx->errcode) {
4506                 if (fix_problem(ctx, PR_1_READ_EXTENT, pctx))
4507                         e2fsck_clear_inode(ctx, ino, inode, 0,
4508                                            "check_blocks_extents");
4509                 pctx->errcode = 0;
4510                 return;
4511         }
4512
4513         retval = ext2fs_extent_get_info(ehandle, &info);
4514         if (retval == 0) {
4515                 int max_depth = info.max_depth;
4516
4517                 if (max_depth >= MAX_EXTENT_DEPTH_COUNT)
4518                         max_depth = MAX_EXTENT_DEPTH_COUNT-1;
4519                 ctx->extent_depth_count[max_depth]++;
4520         }
4521
4522         /* Check maximum extent depth */
4523         pctx->blk = info.max_depth;
4524         pctx->blk2 = ext2fs_max_extent_depth(ehandle);
4525         if (pctx->blk2 < pctx->blk &&
4526             fix_problem(ctx, PR_1_EXTENT_BAD_MAX_DEPTH, pctx))
4527                 pb->eti.force_rebuild = 1;
4528
4529         /* Can we collect extent tree level stats? */
4530         pctx->blk = MAX_EXTENT_DEPTH_COUNT;
4531         if (pctx->blk2 > pctx->blk)
4532                 fix_problem(ctx, PR_1E_MAX_EXTENT_TREE_DEPTH, pctx);
4533         memset(pb->eti.ext_info, 0, sizeof(pb->eti.ext_info));
4534         pb->eti.ino = pb->ino;
4535
4536         pb->next_lblock = 0;
4537
4538         eof_lblk = ((EXT2_I_SIZE(inode) + fs->blocksize - 1) >>
4539                 EXT2_BLOCK_SIZE_BITS(fs->super)) - 1;
4540         scan_extent_node(ctx, pctx, pb, 0, 0, eof_lblk, ehandle, 1);
4541         if (pctx->errcode &&
4542             fix_problem(ctx, PR_1_EXTENT_ITERATE_FAILURE, pctx)) {
4543                 pb->num_blocks = 0;
4544                 inode->i_blocks = 0;
4545                 e2fsck_clear_inode(ctx, ino, inode, E2F_FLAG_RESTART,
4546                                    "check_blocks_extents");
4547                 pctx->errcode = 0;
4548         }
4549         ext2fs_extent_free(ehandle);
4550
4551         /* Rebuild unless it's a dir and we're rehashing it */
4552         if (LINUX_S_ISDIR(inode->i_mode) &&
4553             e2fsck_dir_will_be_rehashed(ctx, ino))
4554                 return;
4555
4556         if (ctx->options & E2F_OPT_CONVERT_BMAP)
4557                 e2fsck_rebuild_extents_later(ctx, ino);
4558         else
4559                 e2fsck_should_rebuild_extents(ctx, pctx, &pb->eti, &info);
4560 }
4561
4562 /*
4563  * In fact we don't need to check blocks for an inode with inline data
4564  * because this inode doesn't have any blocks.  In this function all
4565  * we need to do is add this inode into dblist when it is a directory.
4566  */
4567 static void check_blocks_inline_data(e2fsck_t ctx, struct problem_context *pctx,
4568                                      struct process_block_struct *pb)
4569 {
4570         int     flags;
4571         size_t  inline_data_size = 0;
4572
4573         if (!pb->is_dir) {
4574                 pctx->errcode = 0;
4575                 return;
4576         }
4577
4578         /* Process the dirents in i_block[] as the "first" block. */
4579         pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist, pb->ino, 0, 0);
4580         if (pctx->errcode)
4581                 goto err;
4582
4583         /* Process the dirents in the EA as a "second" block. */
4584         flags = ctx->fs->flags;
4585         ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
4586         pctx->errcode = ext2fs_inline_data_size(ctx->fs, pb->ino,
4587                                                 &inline_data_size);
4588         ctx->fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
4589                          (ctx->fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
4590         if (pctx->errcode) {
4591                 pctx->errcode = 0;
4592                 return;
4593         }
4594
4595         if (inline_data_size <= EXT4_MIN_INLINE_DATA_SIZE)
4596                 return;
4597
4598         pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist, pb->ino, 0, 1);
4599         if (pctx->errcode)
4600                 goto err;
4601
4602         return;
4603 err:
4604         pctx->blk = 0;
4605         pctx->num = 0;
4606         fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
4607         ctx->flags |= E2F_FLAG_ABORT;
4608 }
4609
4610 /*
4611  * This subroutine is called on each inode to account for all of the
4612  * blocks used by that inode.
4613  */
4614 static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
4615                          char *block_buf, const struct ea_quota *ea_ibody_quota)
4616 {
4617         ext2_filsys fs = ctx->fs;
4618         struct process_block_struct pb;
4619         ext2_ino_t      ino = pctx->ino;
4620         struct ext2_inode *inode = pctx->inode;
4621         unsigned        bad_size = 0;
4622         int             dirty_inode = 0;
4623         int             extent_fs;
4624         int             inlinedata_fs;
4625         __u64           size;
4626         struct ea_quota ea_block_quota;
4627
4628         pb.ino = ino;
4629         pb.num_blocks = EXT2FS_B2C(ctx->fs,
4630                                    ea_ibody_quota ? ea_ibody_quota->blocks : 0);
4631         pb.last_block = ~0;
4632         pb.last_init_lblock = -1;
4633         pb.last_db_block = -1;
4634         pb.num_illegal_blocks = 0;
4635         pb.suppress = 0; pb.clear = 0;
4636         pb.fragmented = 0;
4637         pb.compressed = 0;
4638         pb.previous_block = 0;
4639         pb.is_dir = LINUX_S_ISDIR(inode->i_mode);
4640         pb.is_reg = LINUX_S_ISREG(inode->i_mode);
4641         pb.max_blocks = 1U << (31 - fs->super->s_log_block_size);
4642         pb.inode = inode;
4643         pb.pctx = pctx;
4644         pb.ctx = ctx;
4645         pb.inode_modified = 0;
4646         pb.eti.force_rebuild = 0;
4647         pctx->ino = ino;
4648         pctx->errcode = 0;
4649
4650         extent_fs = ext2fs_has_feature_extents(ctx->fs->super);
4651         inlinedata_fs = ext2fs_has_feature_inline_data(ctx->fs->super);
4652
4653         if (check_ext_attr(ctx, pctx, block_buf, &ea_block_quota)) {
4654                 if (e2fsck_should_abort(ctx))
4655                         goto out;
4656                 pb.num_blocks += EXT2FS_B2C(ctx->fs, ea_block_quota.blocks);
4657         }
4658
4659         if (inlinedata_fs && (inode->i_flags & EXT4_INLINE_DATA_FL))
4660                 check_blocks_inline_data(ctx, pctx, &pb);
4661         else if (ext2fs_inode_has_valid_blocks2(fs, inode)) {
4662                 if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL))
4663                         check_blocks_extents(ctx, pctx, &pb);
4664                 else {
4665                         int flags;
4666                         /*
4667                          * If we've modified the inode, write it out before
4668                          * iterate() tries to use it.
4669                          */
4670                         if (dirty_inode) {
4671                                 e2fsck_write_inode(ctx, ino, inode,
4672                                                    "check_blocks");
4673                                 dirty_inode = 0;
4674                         }
4675                         flags = fs->flags;
4676                         fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
4677                         pctx->errcode = ext2fs_block_iterate3(fs, ino,
4678                                                 pb.is_dir ? BLOCK_FLAG_HOLE : 0,
4679                                                 block_buf, process_block, &pb);
4680                         /*
4681                          * We do not have uninitialized extents in non extent
4682                          * files.
4683                          */
4684                         pb.last_init_lblock = pb.last_block;
4685                         /*
4686                          * If iterate() changed a block mapping, we have to
4687                          * re-read the inode.  If we decide to clear the
4688                          * inode after clearing some stuff, we'll re-write the
4689                          * bad mappings into the inode!
4690                          */
4691                         if (pb.inode_modified)
4692                                 e2fsck_read_inode(ctx, ino, inode,
4693                                                   "check_blocks");
4694                         fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
4695                                     (fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
4696
4697                         if (ctx->options & E2F_OPT_CONVERT_BMAP) {
4698 #ifdef DEBUG
4699                                 printf("bmap rebuild ino=%d\n", ino);
4700 #endif
4701                                 if (!LINUX_S_ISDIR(inode->i_mode) ||
4702                                     !e2fsck_dir_will_be_rehashed(ctx, ino))
4703                                         e2fsck_rebuild_extents_later(ctx, ino);
4704                         }
4705                 }
4706         }
4707         end_problem_latch(ctx, PR_LATCH_BLOCK);
4708         end_problem_latch(ctx, PR_LATCH_TOOBIG);
4709         if (e2fsck_should_abort(ctx))
4710                 goto out;
4711         if (pctx->errcode)
4712                 fix_problem(ctx, PR_1_BLOCK_ITERATE, pctx);
4713
4714         if (pb.fragmented && pb.num_blocks < fs->super->s_blocks_per_group) {
4715                 if (LINUX_S_ISDIR(inode->i_mode))
4716                         ctx->fs_fragmented_dir++;
4717                 else
4718                         ctx->fs_fragmented++;
4719         }
4720
4721         if (pb.clear) {
4722                 e2fsck_clear_inode(ctx, ino, inode, E2F_FLAG_RESTART,
4723                                    "check_blocks");
4724                 return;
4725         }
4726
4727         if (inode->i_flags & EXT2_INDEX_FL) {
4728                 if (handle_htree(ctx, pctx, ino, inode, block_buf)) {
4729                         inode->i_flags &= ~EXT2_INDEX_FL;
4730                         dirty_inode++;
4731                 } else {
4732                         e2fsck_add_dx_dir(ctx, ino, inode, pb.last_block+1);
4733                 }
4734         }
4735
4736         if (!pb.num_blocks && pb.is_dir &&
4737             !(inode->i_flags & EXT4_INLINE_DATA_FL)) {
4738                 if (fix_problem(ctx, PR_1_ZERO_LENGTH_DIR, pctx)) {
4739                         e2fsck_clear_inode(ctx, ino, inode, 0, "check_blocks");
4740                         ctx->fs_directory_count--;
4741                         return;
4742                 }
4743         }
4744
4745         if (ino != quota_type2inum(PRJQUOTA, fs->super) &&
4746             (ino == EXT2_ROOT_INO || ino >= EXT2_FIRST_INODE(ctx->fs->super)) &&
4747             !(inode->i_flags & EXT4_EA_INODE_FL)) {
4748                 quota_data_add(ctx->qctx, (struct ext2_inode_large *) inode,
4749                                ino,
4750                                pb.num_blocks * EXT2_CLUSTER_SIZE(fs->super));
4751                 quota_data_inodes(ctx->qctx, (struct ext2_inode_large *) inode,
4752                                   ino, (ea_ibody_quota ?
4753                                         ea_ibody_quota->inodes : 0) +
4754                                                 ea_block_quota.inodes + 1);
4755         }
4756
4757         if (!ext2fs_has_feature_huge_file(fs->super) ||
4758             !(inode->i_flags & EXT4_HUGE_FILE_FL))
4759                 pb.num_blocks *= (fs->blocksize / 512);
4760         pb.num_blocks *= EXT2FS_CLUSTER_RATIO(fs);
4761 #if 0
4762         printf("inode %u, i_size = %u, last_block = %llu, i_blocks=%llu, num_blocks = %llu\n",
4763                ino, inode->i_size, (unsigned long long) pb.last_block,
4764                (unsigned long long) ext2fs_inode_i_blocks(fs, inode),
4765                (unsigned long long) pb.num_blocks);
4766 #endif
4767         size = EXT2_I_SIZE(inode);
4768         if (pb.is_dir) {
4769                 unsigned nblock = size >> EXT2_BLOCK_SIZE_BITS(fs->super);
4770                 if (inode->i_flags & EXT4_INLINE_DATA_FL) {
4771                         int flags;
4772                         size_t sz = 0;
4773                         errcode_t err;
4774
4775                         flags = ctx->fs->flags;
4776                         ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
4777                         err = ext2fs_inline_data_size(ctx->fs, pctx->ino,
4778                                                       &sz);
4779                         ctx->fs->flags = (flags &
4780                                           EXT2_FLAG_IGNORE_CSUM_ERRORS) |
4781                                          (ctx->fs->flags &
4782                                           ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
4783                         if (err || sz != size) {
4784                                 bad_size = 7;
4785                                 pctx->num = sz;
4786                         }
4787                 } else if (size & (fs->blocksize - 1))
4788                         bad_size = 5;
4789                 else if (nblock > (pb.last_block + 1))
4790                         bad_size = 1;
4791                 else if (nblock < (pb.last_block + 1)) {
4792                         if (((pb.last_block + 1) - nblock) >
4793                             fs->super->s_prealloc_dir_blocks)
4794                                 bad_size = 2;
4795                 }
4796         } else {
4797                 if ((pb.last_init_lblock >= 0) &&
4798                     /* Do not allow initialized allocated blocks past i_size*/
4799                     (size < (__u64)pb.last_init_lblock * fs->blocksize) &&
4800                     !(inode->i_flags & EXT4_VERITY_FL))
4801                         bad_size = 3;
4802                 else if (!(extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) &&
4803                          size > ext2_max_sizes[fs->super->s_log_block_size])
4804                         /* too big for a direct/indirect-mapped file */
4805                         bad_size = 4;
4806                 else if ((extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) &&
4807                          size >
4808                          ((1ULL << (32 + EXT2_BLOCK_SIZE_BITS(fs->super))) - 1))
4809                         /* too big for an extent-based file - 32bit ee_block */
4810                         bad_size = 6;
4811         }
4812         /* i_size for symlinks is checked elsewhere */
4813         if (bad_size && !LINUX_S_ISLNK(inode->i_mode)) {
4814                 /* Did inline_data set pctx->num earlier? */
4815                 if (bad_size != 7)
4816                         pctx->num = (pb.last_block + 1) * fs->blocksize;
4817                 pctx->group = bad_size;
4818                 if (fix_problem(ctx, PR_1_BAD_I_SIZE, pctx)) {
4819                         ext2fs_inode_size_set(fs, inode, pctx->num);
4820                         if (EXT2_I_SIZE(inode) == 0 &&
4821                             (inode->i_flags & EXT4_INLINE_DATA_FL)) {
4822                                 memset(inode->i_block, 0,
4823                                        sizeof(inode->i_block));
4824                                 inode->i_flags &= ~EXT4_INLINE_DATA_FL;
4825                         }
4826                         dirty_inode++;
4827                 }
4828                 pctx->num = 0;
4829         }
4830         if (LINUX_S_ISREG(inode->i_mode) &&
4831             ext2fs_needs_large_file_feature(EXT2_I_SIZE(inode)))
4832                 ctx->large_files++;
4833         if ((fs->super->s_creator_os != EXT2_OS_HURD) &&
4834             ((pb.num_blocks != ext2fs_inode_i_blocks(fs, inode)) ||
4835              (ext2fs_has_feature_huge_file(fs->super) &&
4836               (inode->i_flags & EXT4_HUGE_FILE_FL) &&
4837               (inode->osd2.linux2.l_i_blocks_hi != 0)))) {
4838                 pctx->num = pb.num_blocks;
4839                 if (fix_problem(ctx, PR_1_BAD_I_BLOCKS, pctx)) {
4840                         inode->i_blocks = pb.num_blocks;
4841                         inode->osd2.linux2.l_i_blocks_hi = pb.num_blocks >> 32;
4842                         dirty_inode++;
4843                 }
4844                 pctx->num = 0;
4845         }
4846
4847         /*
4848          * The kernel gets mad if we ask it to allocate bigalloc clusters to
4849          * a block mapped file, so rebuild it as an extent file.  We can skip
4850          * symlinks because they're never rewritten.
4851          */
4852         if (ext2fs_has_feature_bigalloc(fs->super) &&
4853             (LINUX_S_ISREG(inode->i_mode) || LINUX_S_ISDIR(inode->i_mode)) &&
4854             ext2fs_inode_data_blocks2(fs, inode) > 0 &&
4855             (ino == EXT2_ROOT_INO || ino >= EXT2_FIRST_INO(fs->super)) &&
4856             !(inode->i_flags & (EXT4_EXTENTS_FL | EXT4_INLINE_DATA_FL)) &&
4857             fix_problem(ctx, PR_1_NO_BIGALLOC_BLOCKMAP_FILES, pctx)) {
4858                 pctx->errcode = e2fsck_rebuild_extents_later(ctx, ino);
4859                 if (pctx->errcode)
4860                         goto out;
4861         }
4862
4863         if (ctx->dirs_to_hash && pb.is_dir &&
4864             !(ctx->lost_and_found && ctx->lost_and_found == ino) &&
4865             !(inode->i_flags & EXT2_INDEX_FL) &&
4866             ((inode->i_size / fs->blocksize) >= 3))
4867                 e2fsck_rehash_dir_later(ctx, ino);
4868
4869 out:
4870         if (dirty_inode)
4871                 e2fsck_write_inode(ctx, ino, inode, "check_blocks");
4872 }
4873
4874 #if 0
4875 /*
4876  * Helper function called by process block when an illegal block is
4877  * found.  It returns a description about why the block is illegal
4878  */
4879 static char *describe_illegal_block(ext2_filsys fs, blk64_t block)
4880 {
4881         blk64_t super;
4882         int     i;
4883         static char     problem[80];
4884
4885         super = fs->super->s_first_data_block;
4886         strcpy(problem, "PROGRAMMING ERROR: Unknown reason for illegal block");
4887         if (block < super) {
4888                 sprintf(problem, "< FIRSTBLOCK (%u)", super);
4889                 return(problem);
4890         } else if (block >= ext2fs_blocks_count(fs->super)) {
4891                 sprintf(problem, "> BLOCKS (%u)", ext2fs_blocks_count(fs->super));
4892                 return(problem);
4893         }
4894         for (i = 0; i < fs->group_desc_count; i++) {
4895                 if (block == super) {
4896                         sprintf(problem, "is the superblock in group %d", i);
4897                         break;
4898                 }
4899                 if (block > super &&
4900                     block <= (super + fs->desc_blocks)) {
4901                         sprintf(problem, "is in the group descriptors "
4902                                 "of group %d", i);
4903                         break;
4904                 }
4905                 if (block == ext2fs_block_bitmap_loc(fs, i)) {
4906                         sprintf(problem, "is the block bitmap of group %d", i);
4907                         break;
4908                 }
4909                 if (block == ext2fs_inode_bitmap_loc(fs, i)) {
4910                         sprintf(problem, "is the inode bitmap of group %d", i);
4911                         break;
4912                 }
4913                 if (block >= ext2fs_inode_table_loc(fs, i) &&
4914                     (block < ext2fs_inode_table_loc(fs, i)
4915                      + fs->inode_blocks_per_group)) {
4916                         sprintf(problem, "is in the inode table of group %d",
4917                                 i);
4918                         break;
4919                 }
4920                 super += fs->super->s_blocks_per_group;
4921         }
4922         return(problem);
4923 }
4924 #endif
4925
4926 /*
4927  * This is a helper function for check_blocks().
4928  */
4929 static int process_block(ext2_filsys fs,
4930                   blk64_t       *block_nr,
4931                   e2_blkcnt_t blockcnt,
4932                   blk64_t ref_block EXT2FS_ATTR((unused)),
4933                   int ref_offset EXT2FS_ATTR((unused)),
4934                   void *priv_data)
4935 {
4936         struct process_block_struct *p;
4937         struct problem_context *pctx;
4938         blk64_t blk = *block_nr;
4939         int     ret_code = 0;
4940         problem_t       problem = 0;
4941         e2fsck_t        ctx;
4942
4943         p = (struct process_block_struct *) priv_data;
4944         pctx = p->pctx;
4945         ctx = p->ctx;
4946
4947         /*
4948          * For a directory, add logical block zero for processing even if it's
4949          * not mapped or we'll be perennially stuck with broken "." and ".."
4950          * entries.
4951          */
4952         if (p->is_dir && blockcnt == 0 && blk == 0) {
4953                 pctx->errcode = ext2fs_add_dir_block2(fs->dblist, p->ino, 0, 0);
4954                 if (pctx->errcode) {
4955                         pctx->blk = blk;
4956                         pctx->num = blockcnt;
4957                         goto failed_add_dir_block;
4958                 }
4959                 p->last_db_block++;
4960         }
4961
4962         if (blk == 0)
4963                 return 0;
4964
4965 #if 0
4966         printf("Process_block, inode %lu, block %u, #%d\n", p->ino, blk,
4967                blockcnt);
4968 #endif
4969
4970         /*
4971          * Simplistic fragmentation check.  We merely require that the
4972          * file be contiguous.  (Which can never be true for really
4973          * big files that are greater than a block group.)
4974          */
4975         if (p->previous_block && p->ino != EXT2_RESIZE_INO) {
4976                 if (p->previous_block+1 != blk) {
4977                         if (ctx->options & E2F_OPT_FRAGCHECK) {
4978                                 char type = '?';
4979
4980                                 if (p->is_dir)
4981                                         type = 'd';
4982                                 else if (p->is_reg)
4983                                         type = 'f';
4984
4985                                 printf(_("%6lu(%c): expecting %6lu "
4986                                          "got phys %6lu (blkcnt %lld)\n"),
4987                                        (unsigned long) pctx->ino, type,
4988                                        (unsigned long) p->previous_block+1,
4989                                        (unsigned long) blk,
4990                                        (long long) blockcnt);
4991                         }
4992                         p->fragmented = 1;
4993                 }
4994         }
4995
4996         if (p->is_dir && !ext2fs_has_feature_largedir(fs->super) &&
4997             !pctx->inode->i_size_high &&
4998             blockcnt > (1 << (21 - fs->super->s_log_block_size)))
4999                 problem = PR_1_TOOBIG_DIR;
5000         if (p->is_dir && p->num_blocks + 1 >= p->max_blocks)
5001                 problem = PR_1_TOOBIG_DIR;
5002         if (p->is_reg && p->num_blocks + 1 >= p->max_blocks)
5003                 problem = PR_1_TOOBIG_REG;
5004         if (!p->is_dir && !p->is_reg && blockcnt > 0)
5005                 problem = PR_1_TOOBIG_SYMLINK;
5006
5007         if (blk < fs->super->s_first_data_block ||
5008             blk >= ext2fs_blocks_count(fs->super))
5009                 problem = PR_1_ILLEGAL_BLOCK_NUM;
5010
5011         /*
5012          * If this IND/DIND/TIND block is squatting atop some critical metadata
5013          * (group descriptors, superblock, bitmap, inode table), any write to
5014          * "fix" mapping problems will destroy the metadata.  We'll let pass 1b
5015          * fix that and restart fsck.
5016          */
5017         if (blockcnt < 0 &&
5018             p->ino != EXT2_RESIZE_INO &&
5019             blk < ctx->fs->super->s_blocks_count &&
5020             ext2fs_test_block_bitmap2(ctx->block_metadata_map, blk)) {
5021                 pctx->blk = blk;
5022                 fix_problem(ctx, PR_1_CRITICAL_METADATA_COLLISION, pctx);
5023                 if ((ctx->options & E2F_OPT_NO) == 0)
5024                         ctx->flags |= E2F_FLAG_RESTART_LATER;
5025         }
5026
5027         if (problem) {
5028                 p->num_illegal_blocks++;
5029                 /*
5030                  * A bit of subterfuge here -- we're trying to fix a block
5031                  * mapping, but the IND/DIND/TIND block could have collided
5032                  * with some critical metadata.  So, fix the in-core mapping so
5033                  * iterate won't go insane, but return 0 instead of
5034                  * BLOCK_CHANGED so that it won't write the remapping out to
5035                  * our multiply linked block.
5036                  *
5037                  * Even if we previously determined that an *IND block
5038                  * conflicts with critical metadata, we must still try to
5039                  * iterate the *IND block as if it is an *IND block to find and
5040                  * mark the blocks it points to.  Better to be overly cautious
5041                  * with the used_blocks map so that we don't move the *IND
5042                  * block to a block that's really in use!
5043                  */
5044                 if (p->ino != EXT2_RESIZE_INO &&
5045                     ref_block != 0 &&
5046                     ext2fs_test_block_bitmap2(ctx->block_metadata_map,
5047                                               ref_block)) {
5048                         *block_nr = 0;
5049                         return 0;
5050                 }
5051                 if (!p->suppress && (p->num_illegal_blocks % 12) == 0) {
5052                         if (fix_problem(ctx, PR_1_TOO_MANY_BAD_BLOCKS, pctx)) {
5053                                 p->clear = 1;
5054                                 return BLOCK_ABORT;
5055                         }
5056                         if (fix_problem(ctx, PR_1_SUPPRESS_MESSAGES, pctx)) {
5057                                 p->suppress = 1;
5058                                 set_latch_flags(PR_LATCH_BLOCK,
5059                                                 PRL_SUPPRESS, 0);
5060                         }
5061                 }
5062                 pctx->blk = blk;
5063                 pctx->blkcount = blockcnt;
5064                 if (fix_problem(ctx, problem, pctx)) {
5065                         blk = *block_nr = 0;
5066                         ret_code = BLOCK_CHANGED;
5067                         p->inode_modified = 1;
5068                         /*
5069                          * If the directory block is too big and is beyond the
5070                          * end of the FS, don't bother trying to add it for
5071                          * processing -- the kernel would never have created a
5072                          * directory this large, and we risk an ENOMEM abort.
5073                          * In any case, the toobig handler for extent-based
5074                          * directories also doesn't feed toobig blocks to
5075                          * pass 2.
5076                          */
5077                         if (problem == PR_1_TOOBIG_DIR)
5078                                 return ret_code;
5079                         goto mark_dir;
5080                 } else
5081                         return 0;
5082         }
5083
5084         if (p->ino == EXT2_RESIZE_INO) {
5085                 /*
5086                  * The resize inode has already be sanity checked
5087                  * during pass #0 (the superblock checks).  All we
5088                  * have to do is mark the double indirect block as
5089                  * being in use; all of the other blocks are handled
5090                  * by mark_table_blocks()).
5091                  */
5092                 if (blockcnt == BLOCK_COUNT_DIND)
5093                         mark_block_used(ctx, blk);
5094                 p->num_blocks++;
5095         } else if (!(ctx->fs->cluster_ratio_bits &&
5096                      p->previous_block &&
5097                      (EXT2FS_B2C(ctx->fs, blk) ==
5098                       EXT2FS_B2C(ctx->fs, p->previous_block)) &&
5099                      (blk & EXT2FS_CLUSTER_MASK(ctx->fs)) ==
5100                      ((unsigned) blockcnt & EXT2FS_CLUSTER_MASK(ctx->fs)))) {
5101                 mark_block_used(ctx, blk);
5102                 p->num_blocks++;
5103         } else if (has_unaligned_cluster_map(ctx, p->previous_block,
5104                                              p->last_block, blk, blockcnt)) {
5105                 pctx->blk = blockcnt;
5106                 pctx->blk2 = blk;
5107                 fix_problem(ctx, PR_1_MISALIGNED_CLUSTER, pctx);
5108                 mark_block_used(ctx, blk);
5109                 mark_block_used(ctx, blk);
5110         }
5111         if (blockcnt >= 0)
5112                 p->last_block = blockcnt;
5113         p->previous_block = blk;
5114 mark_dir:
5115         if (p->is_dir && (blockcnt >= 0)) {
5116                 while (++p->last_db_block < blockcnt) {
5117                         pctx->errcode = ext2fs_add_dir_block2(fs->dblist,
5118                                                               p->ino, 0,
5119                                                               p->last_db_block);
5120                         if (pctx->errcode) {
5121                                 pctx->blk = 0;
5122                                 pctx->num = p->last_db_block;
5123                                 goto failed_add_dir_block;
5124                         }
5125                 }
5126                 pctx->errcode = ext2fs_add_dir_block2(fs->dblist, p->ino,
5127                                                       blk, blockcnt);
5128                 if (pctx->errcode) {
5129                         pctx->blk = blk;
5130                         pctx->num = blockcnt;
5131                 failed_add_dir_block:
5132                         fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
5133                         /* Should never get here */
5134                         ctx->flags |= E2F_FLAG_ABORT;
5135                         return BLOCK_ABORT;
5136                 }
5137         }
5138         return ret_code;
5139 }
5140
5141 static int process_bad_block(ext2_filsys fs,
5142                       blk64_t *block_nr,
5143                       e2_blkcnt_t blockcnt,
5144                       blk64_t ref_block EXT2FS_ATTR((unused)),
5145                       int ref_offset EXT2FS_ATTR((unused)),
5146                       void *priv_data)
5147 {
5148         struct process_block_struct *p;
5149         blk64_t         blk = *block_nr;
5150         blk64_t         first_block;
5151         dgrp_t          i;
5152         struct problem_context *pctx;
5153         e2fsck_t        ctx;
5154
5155         if (!blk)
5156                 return 0;
5157
5158         p = (struct process_block_struct *) priv_data;
5159         ctx = p->ctx;
5160         pctx = p->pctx;
5161
5162         pctx->ino = EXT2_BAD_INO;
5163         pctx->blk = blk;
5164         pctx->blkcount = blockcnt;
5165
5166         if ((blk < fs->super->s_first_data_block) ||
5167             (blk >= ext2fs_blocks_count(fs->super))) {
5168                 if (fix_problem(ctx, PR_1_BB_ILLEGAL_BLOCK_NUM, pctx)) {
5169                         *block_nr = 0;
5170                         return BLOCK_CHANGED;
5171                 } else
5172                         return 0;
5173         }
5174
5175         if (blockcnt < 0) {
5176                 if (ext2fs_test_block_bitmap2(p->fs_meta_blocks, blk)) {
5177                         p->bbcheck = 1;
5178                         if (fix_problem(ctx, PR_1_BB_FS_BLOCK, pctx)) {
5179                                 *block_nr = 0;
5180                                 return BLOCK_CHANGED;
5181                         }
5182                 } else if (is_blocks_used(ctx, blk, 1)) {
5183                         p->bbcheck = 1;
5184                         if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK,
5185                                         pctx)) {
5186                                 *block_nr = 0;
5187                                 return BLOCK_CHANGED;
5188                         }
5189                         if (e2fsck_should_abort(ctx))
5190                                 return BLOCK_ABORT;
5191                 } else {
5192                         mark_block_used(ctx, blk);
5193                 }
5194                 return 0;
5195         }
5196 #if 0
5197         printf ("DEBUG: Marking %u as bad.\n", blk);
5198 #endif
5199         ctx->fs_badblocks_count++;
5200         /*
5201          * If the block is not used, then mark it as used and return.
5202          * If it is already marked as found, this must mean that
5203          * there's an overlap between the filesystem table blocks
5204          * (bitmaps and inode table) and the bad block list.
5205          */
5206         if (!is_blocks_used(ctx, blk, 1)) {
5207                 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
5208                 return 0;
5209         }
5210         /*
5211          * Try to find the where the filesystem block was used...
5212          */
5213         first_block = fs->super->s_first_data_block;
5214
5215         for (i = 0; i < fs->group_desc_count; i++ ) {
5216                 pctx->group = i;
5217                 pctx->blk = blk;
5218                 if (!ext2fs_bg_has_super(fs, i))
5219                         goto skip_super;
5220                 if (blk == first_block) {
5221                         if (i == 0) {
5222                                 if (fix_problem(ctx,
5223                                                 PR_1_BAD_PRIMARY_SUPERBLOCK,
5224                                                 pctx)) {
5225                                         *block_nr = 0;
5226                                         return BLOCK_CHANGED;
5227                                 }
5228                                 return 0;
5229                         }
5230                         fix_problem(ctx, PR_1_BAD_SUPERBLOCK, pctx);
5231                         return 0;
5232                 }
5233                 if ((blk > first_block) &&
5234                     (blk <= first_block + fs->desc_blocks)) {
5235                         if (i == 0) {
5236                                 pctx->blk = *block_nr;
5237                                 if (fix_problem(ctx,
5238                         PR_1_BAD_PRIMARY_GROUP_DESCRIPTOR, pctx)) {
5239                                         *block_nr = 0;
5240                                         return BLOCK_CHANGED;
5241                                 }
5242                                 return 0;
5243                         }
5244                         fix_problem(ctx, PR_1_BAD_GROUP_DESCRIPTORS, pctx);
5245                         return 0;
5246                 }
5247         skip_super:
5248                 if (blk == ext2fs_block_bitmap_loc(fs, i)) {
5249                         if (fix_problem(ctx, PR_1_BB_BAD_BLOCK, pctx)) {
5250                                 ctx->invalid_block_bitmap_flag[i]++;
5251                                 ctx->invalid_bitmaps++;
5252                         }
5253                         return 0;
5254                 }
5255                 if (blk == ext2fs_inode_bitmap_loc(fs, i)) {
5256                         if (fix_problem(ctx, PR_1_IB_BAD_BLOCK, pctx)) {
5257                                 ctx->invalid_inode_bitmap_flag[i]++;
5258                                 ctx->invalid_bitmaps++;
5259                         }
5260                         return 0;
5261                 }
5262                 if ((blk >= ext2fs_inode_table_loc(fs, i)) &&
5263                     (blk < (ext2fs_inode_table_loc(fs, i) +
5264                             fs->inode_blocks_per_group))) {
5265                         /*
5266                          * If there are bad blocks in the inode table,
5267                          * the inode scan code will try to do
5268                          * something reasonable automatically.
5269                          */
5270                         return 0;
5271                 }
5272                 first_block += fs->super->s_blocks_per_group;
5273         }
5274         /*
5275          * If we've gotten to this point, then the only
5276          * possibility is that the bad block inode meta data
5277          * is using a bad block.
5278          */
5279         if ((blk == p->inode->i_block[EXT2_IND_BLOCK]) ||
5280             (blk == p->inode->i_block[EXT2_DIND_BLOCK]) ||
5281             (blk == p->inode->i_block[EXT2_TIND_BLOCK])) {
5282                 p->bbcheck = 1;
5283                 if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK, pctx)) {
5284                         *block_nr = 0;
5285                         return BLOCK_CHANGED;
5286                 }
5287                 if (e2fsck_should_abort(ctx))
5288                         return BLOCK_ABORT;
5289                 return 0;
5290         }
5291
5292         pctx->group = -1;
5293
5294         /* Warn user that the block wasn't claimed */
5295         fix_problem(ctx, PR_1_PROGERR_CLAIMED_BLOCK, pctx);
5296
5297         return 0;
5298 }
5299
5300 static void new_table_block(e2fsck_t ctx, blk64_t first_block, dgrp_t group,
5301                             const char *name, int num, blk64_t *new_block)
5302 {
5303         ext2_filsys fs = ctx->fs;
5304         dgrp_t          last_grp;
5305         blk64_t         old_block = *new_block;
5306         blk64_t         last_block;
5307         dgrp_t          flexbg;
5308         unsigned        flexbg_size;
5309         int             i, is_flexbg;
5310         char            *buf;
5311         struct problem_context  pctx;
5312
5313         clear_problem_context(&pctx);
5314
5315         pctx.group = group;
5316         pctx.blk = old_block;
5317         pctx.str = name;
5318
5319         /*
5320          * For flex_bg filesystems, first try to allocate the metadata
5321          * within the flex_bg, and if that fails then try finding the
5322          * space anywhere in the filesystem.
5323          */
5324         is_flexbg = ext2fs_has_feature_flex_bg(fs->super);
5325         if (is_flexbg) {
5326                 flexbg_size = 1 << fs->super->s_log_groups_per_flex;
5327                 flexbg = group / flexbg_size;
5328                 first_block = ext2fs_group_first_block2(fs,
5329                                                         flexbg_size * flexbg);
5330                 last_grp = group | (flexbg_size - 1);
5331                 if (last_grp >= fs->group_desc_count)
5332                         last_grp = fs->group_desc_count - 1;
5333                 last_block = ext2fs_group_last_block2(fs, last_grp);
5334         } else
5335                 last_block = ext2fs_group_last_block2(fs, group);
5336         pctx.errcode = ext2fs_get_free_blocks2(fs, first_block, last_block,
5337                                                num, ctx->block_found_map,
5338                                                new_block);
5339         if (is_flexbg && (pctx.errcode == EXT2_ET_BLOCK_ALLOC_FAIL))
5340                 pctx.errcode = ext2fs_get_free_blocks2(fs,
5341                                 fs->super->s_first_data_block,
5342                                 ext2fs_blocks_count(fs->super),
5343                                 num, ctx->block_found_map, new_block);
5344         if (pctx.errcode) {
5345                 pctx.num = num;
5346                 fix_problem(ctx, PR_1_RELOC_BLOCK_ALLOCATE, &pctx);
5347                 ext2fs_unmark_valid(fs);
5348                 ctx->flags |= E2F_FLAG_ABORT;
5349                 return;
5350         }
5351         pctx.errcode = ext2fs_get_mem(fs->blocksize, &buf);
5352         if (pctx.errcode) {
5353                 fix_problem(ctx, PR_1_RELOC_MEMORY_ALLOCATE, &pctx);
5354                 ext2fs_unmark_valid(fs);
5355                 ctx->flags |= E2F_FLAG_ABORT;
5356                 return;
5357         }
5358         ext2fs_mark_super_dirty(fs);
5359         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
5360         pctx.blk2 = *new_block;
5361         fix_problem(ctx, (old_block ? PR_1_RELOC_FROM_TO :
5362                           PR_1_RELOC_TO), &pctx);
5363         pctx.blk2 = 0;
5364         for (i = 0; i < num; i++) {
5365                 pctx.blk = i;
5366                 ext2fs_mark_block_bitmap2(ctx->block_found_map, (*new_block)+i);
5367                 if (old_block) {
5368                         pctx.errcode = io_channel_read_blk64(fs->io,
5369                                    old_block + i, 1, buf);
5370                         if (pctx.errcode)
5371                                 fix_problem(ctx, PR_1_RELOC_READ_ERR, &pctx);
5372                         pctx.blk = (*new_block) + i;
5373                         pctx.errcode = io_channel_write_blk64(fs->io, pctx.blk,
5374                                                               1, buf);
5375                 } else {
5376                         pctx.blk = (*new_block) + i;
5377                         pctx.errcode = ext2fs_zero_blocks2(fs, pctx.blk, 1,
5378                                                            NULL, NULL);
5379                 }
5380
5381                 if (pctx.errcode)
5382                         fix_problem(ctx, PR_1_RELOC_WRITE_ERR, &pctx);
5383         }
5384         ext2fs_free_mem(&buf);
5385 }
5386
5387 /*
5388  * This routine gets called at the end of pass 1 if bad blocks are
5389  * detected in the superblock, group descriptors, inode_bitmaps, or
5390  * block bitmaps.  At this point, all of the blocks have been mapped
5391  * out, so we can try to allocate new block(s) to replace the bad
5392  * blocks.
5393  */
5394 static void handle_fs_bad_blocks(e2fsck_t ctx)
5395 {
5396         ext2_filsys fs = ctx->fs;
5397         dgrp_t          i;
5398         blk64_t         first_block;
5399         blk64_t         new_blk;
5400
5401         for (i = 0; i < fs->group_desc_count; i++) {
5402                 first_block = ext2fs_group_first_block2(fs, i);
5403
5404                 if (ctx->invalid_block_bitmap_flag[i]) {
5405                         new_blk = ext2fs_block_bitmap_loc(fs, i);
5406                         new_table_block(ctx, first_block, i, _("block bitmap"),
5407                                         1, &new_blk);
5408                         ext2fs_block_bitmap_loc_set(fs, i, new_blk);
5409                 }
5410                 if (ctx->invalid_inode_bitmap_flag[i]) {
5411                         new_blk = ext2fs_inode_bitmap_loc(fs, i);
5412                         new_table_block(ctx, first_block, i, _("inode bitmap"),
5413                                         1, &new_blk);
5414                         ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
5415                 }
5416                 if (ctx->invalid_inode_table_flag[i]) {
5417                         new_blk = ext2fs_inode_table_loc(fs, i);
5418                         new_table_block(ctx, first_block, i, _("inode table"),
5419                                         fs->inode_blocks_per_group,
5420                                         &new_blk);
5421                         ext2fs_inode_table_loc_set(fs, i, new_blk);
5422                         ctx->flags |= E2F_FLAG_RESTART;
5423                 }
5424         }
5425         ctx->invalid_bitmaps = 0;
5426 }
5427
5428 /*
5429  * This routine marks all blocks which are used by the superblock,
5430  * group descriptors, inode bitmaps, and block bitmaps.
5431  */
5432 static void mark_table_blocks(e2fsck_t ctx)
5433 {
5434         ext2_filsys fs = ctx->fs;
5435         blk64_t b;
5436         dgrp_t  i;
5437         unsigned int    j;
5438         struct problem_context pctx;
5439
5440         clear_problem_context(&pctx);
5441
5442         for (i = 0; i < fs->group_desc_count; i++) {
5443                 pctx.group = i;
5444
5445                 ext2fs_reserve_super_and_bgd(fs, i, ctx->block_found_map);
5446                 ext2fs_reserve_super_and_bgd(fs, i, ctx->block_metadata_map);
5447
5448                 /*
5449                  * Mark the blocks used for the inode table
5450                  */
5451                 if (ext2fs_inode_table_loc(fs, i)) {
5452                         for (j = 0, b = ext2fs_inode_table_loc(fs, i);
5453                              j < fs->inode_blocks_per_group;
5454                              j++, b++) {
5455                                 if (ext2fs_test_block_bitmap2(ctx->block_found_map,
5456                                                              b)) {
5457                                         pctx.blk = b;
5458                                         if (!ctx->invalid_inode_table_flag[i] &&
5459                                             fix_problem(ctx,
5460                                                 PR_1_ITABLE_CONFLICT, &pctx)) {
5461                                                 ctx->invalid_inode_table_flag[i]++;
5462                                                 ctx->invalid_bitmaps++;
5463                                         }
5464                                 } else {
5465                                     ext2fs_mark_block_bitmap2(
5466                                                 ctx->block_found_map, b);
5467                                     ext2fs_mark_block_bitmap2(
5468                                                 ctx->block_metadata_map, b);
5469                                 }
5470                         }
5471                 }
5472
5473                 /*
5474                  * Mark block used for the block bitmap
5475                  */
5476                 if (ext2fs_block_bitmap_loc(fs, i)) {
5477                         if (ext2fs_test_block_bitmap2(ctx->block_found_map,
5478                                      ext2fs_block_bitmap_loc(fs, i))) {
5479                                 pctx.blk = ext2fs_block_bitmap_loc(fs, i);
5480                                 if (fix_problem(ctx, PR_1_BB_CONFLICT, &pctx)) {
5481                                         ctx->invalid_block_bitmap_flag[i]++;
5482                                         ctx->invalid_bitmaps++;
5483                                 }
5484                         } else {
5485                             ext2fs_mark_block_bitmap2(ctx->block_found_map,
5486                                      ext2fs_block_bitmap_loc(fs, i));
5487                             ext2fs_mark_block_bitmap2(ctx->block_metadata_map,
5488                                      ext2fs_block_bitmap_loc(fs, i));
5489                         }
5490                 }
5491                 /*
5492                  * Mark block used for the inode bitmap
5493                  */
5494                 if (ext2fs_inode_bitmap_loc(fs, i)) {
5495                         if (ext2fs_test_block_bitmap2(ctx->block_found_map,
5496                                      ext2fs_inode_bitmap_loc(fs, i))) {
5497                                 pctx.blk = ext2fs_inode_bitmap_loc(fs, i);
5498                                 if (fix_problem(ctx, PR_1_IB_CONFLICT, &pctx)) {
5499                                         ctx->invalid_inode_bitmap_flag[i]++;
5500                                         ctx->invalid_bitmaps++;
5501                                 }
5502                         } else {
5503                             ext2fs_mark_block_bitmap2(ctx->block_metadata_map,
5504                                      ext2fs_inode_bitmap_loc(fs, i));
5505                             ext2fs_mark_block_bitmap2(ctx->block_found_map,
5506                                      ext2fs_inode_bitmap_loc(fs, i));
5507                         }
5508                 }
5509         }
5510 }
5511
5512 /*
5513  * These subroutines short circuits ext2fs_get_blocks and
5514  * ext2fs_check_directory; we use them since we already have the inode
5515  * structure, so there's no point in letting the ext2fs library read
5516  * the inode again.
5517  */
5518 static errcode_t pass1_get_blocks(ext2_filsys fs, ext2_ino_t ino,
5519                                   blk_t *blocks)
5520 {
5521         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
5522         int     i;
5523
5524         if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
5525                 return EXT2_ET_CALLBACK_NOTHANDLED;
5526
5527         for (i=0; i < EXT2_N_BLOCKS; i++)
5528                 blocks[i] = ctx->stashed_inode->i_block[i];
5529         return 0;
5530 }
5531
5532 static errcode_t pass1_read_inode(ext2_filsys fs, ext2_ino_t ino,
5533                                   struct ext2_inode *inode)
5534 {
5535         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
5536
5537         if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
5538                 return EXT2_ET_CALLBACK_NOTHANDLED;
5539         *inode = *ctx->stashed_inode;
5540         return 0;
5541 }
5542
5543 static errcode_t pass1_write_inode(ext2_filsys fs, ext2_ino_t ino,
5544                             struct ext2_inode *inode)
5545 {
5546         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
5547
5548         if ((ino == ctx->stashed_ino) && ctx->stashed_inode &&
5549                 (inode != ctx->stashed_inode))
5550                 *ctx->stashed_inode = *inode;
5551         return EXT2_ET_CALLBACK_NOTHANDLED;
5552 }
5553
5554 static errcode_t pass1_check_directory(ext2_filsys fs, ext2_ino_t ino)
5555 {
5556         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
5557
5558         if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
5559                 return EXT2_ET_CALLBACK_NOTHANDLED;
5560
5561         if (!LINUX_S_ISDIR(ctx->stashed_inode->i_mode))
5562                 return EXT2_ET_NO_DIRECTORY;
5563         return 0;
5564 }
5565
5566 static errcode_t e2fsck_get_alloc_block(ext2_filsys fs, blk64_t goal,
5567                                         blk64_t *ret)
5568 {
5569         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
5570         errcode_t       retval;
5571         blk64_t         new_block;
5572
5573         if (ctx->block_found_map) {
5574                 retval = ext2fs_new_block2(fs, goal, ctx->block_found_map,
5575                                            &new_block);
5576                 if (retval)
5577                         return retval;
5578                 if (fs->block_map) {
5579                         ext2fs_mark_block_bitmap2(fs->block_map, new_block);
5580                         ext2fs_mark_bb_dirty(fs);
5581                 }
5582         } else {
5583                 if (!fs->block_map) {
5584                         retval = ext2fs_read_block_bitmap(fs);
5585                         if (retval)
5586                                 return retval;
5587                 }
5588
5589                 retval = ext2fs_new_block2(fs, goal, fs->block_map, &new_block);
5590                 if (retval)
5591                         return retval;
5592         }
5593
5594         *ret = new_block;
5595         return (0);
5596 }
5597
5598 static errcode_t e2fsck_new_range(ext2_filsys fs, int flags, blk64_t goal,
5599                                   blk64_t len, blk64_t *pblk, blk64_t *plen)
5600 {
5601         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
5602         errcode_t       retval;
5603
5604         if (ctx->block_found_map)
5605                 return ext2fs_new_range(fs, flags, goal, len,
5606                                         ctx->block_found_map, pblk, plen);
5607
5608         if (!fs->block_map) {
5609                 retval = ext2fs_read_block_bitmap(fs);
5610                 if (retval)
5611                         return retval;
5612         }
5613
5614         return ext2fs_new_range(fs, flags, goal, len, fs->block_map,
5615                                 pblk, plen);
5616 }
5617
5618 static void e2fsck_block_alloc_stats(ext2_filsys fs, blk64_t blk, int inuse)
5619 {
5620         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
5621
5622         /* Never free a critical metadata block */
5623         if (ctx->block_found_map &&
5624             ctx->block_metadata_map &&
5625             inuse < 0 &&
5626             ext2fs_test_block_bitmap2(ctx->block_metadata_map, blk))
5627                 return;
5628
5629         if (ctx->block_found_map) {
5630                 if (inuse > 0)
5631                         ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
5632                 else
5633                         ext2fs_unmark_block_bitmap2(ctx->block_found_map, blk);
5634         }
5635 }
5636
5637 static void e2fsck_block_alloc_stats_range(ext2_filsys fs, blk64_t blk,
5638                                            blk_t num, int inuse)
5639 {
5640         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
5641
5642         /* Never free a critical metadata block */
5643         if (ctx->block_found_map &&
5644             ctx->block_metadata_map &&
5645             inuse < 0 &&
5646             ext2fs_test_block_bitmap_range2(ctx->block_metadata_map, blk, num))
5647                 return;
5648
5649         if (ctx->block_found_map) {
5650                 if (inuse > 0)
5651                         ext2fs_mark_block_bitmap_range2(ctx->block_found_map,
5652                                                         blk, num);
5653                 else
5654                         ext2fs_unmark_block_bitmap_range2(ctx->block_found_map,
5655                                                         blk, num);
5656         }
5657 }
5658
5659 void e2fsck_use_inode_shortcuts(e2fsck_t ctx, int use_shortcuts)
5660 {
5661         ext2_filsys fs = ctx->fs;
5662
5663         if (use_shortcuts) {
5664                 fs->get_blocks = pass1_get_blocks;
5665                 fs->check_directory = pass1_check_directory;
5666                 fs->read_inode = pass1_read_inode;
5667                 fs->write_inode = pass1_write_inode;
5668                 ctx->stashed_ino = 0;
5669         } else {
5670                 fs->get_blocks = 0;
5671                 fs->check_directory = 0;
5672                 fs->read_inode = 0;
5673                 fs->write_inode = 0;
5674         }
5675 }
5676
5677 void e2fsck_intercept_block_allocations(e2fsck_t ctx)
5678 {
5679         ext2fs_set_alloc_block_callback(ctx->fs, e2fsck_get_alloc_block, 0);
5680         ext2fs_set_block_alloc_stats_callback(ctx->fs,
5681                                                 e2fsck_block_alloc_stats, 0);
5682         ext2fs_set_new_range_callback(ctx->fs, e2fsck_new_range, NULL);
5683         ext2fs_set_block_alloc_stats_range_callback(ctx->fs,
5684                                         e2fsck_block_alloc_stats_range, NULL);
5685 }