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                         ext2fs_write_inode(ctx->fs, entry->e_value_inum,
 386                                            &inode);
 387                 } else {
 388                         return PR_1_ATTR_NO_EA_INODE_FL;
 389                 }
 390         }
 391         return 0;
 392 }
 393
 394 static void inc_ea_inode_refs(e2fsck_t ctx, struct problem_context *pctx,
 395                               struct ext2_ext_attr_entry *first, void *end)
 396 {
 397         struct ext2_ext_attr_entry *entry = first;
 398         struct ext2_ext_attr_entry *np = EXT2_EXT_ATTR_NEXT(entry);
 399
 400         while ((void *) entry < end && (void *) np < end &&
 401                !EXT2_EXT_IS_LAST_ENTRY(entry)) {
 402                 if (!entry->e_value_inum)
 403                         goto next;
 404                 if (!ctx->ea_inode_refs) {
 405                         pctx->errcode = ea_refcount_create(0,
 406                                                            &ctx->ea_inode_refs);
 407                         if (pctx->errcode) {
 408                                 pctx->num = 4;
 409                                 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
 410                                 ctx->flags |= E2F_FLAG_ABORT;
 411                                 return;
 412                         }
 413                 }
 414                 ea_refcount_increment(ctx->ea_inode_refs, entry->e_value_inum,
 415                                       0);
 416         next:
 417                 entry = np;
 418                 np = EXT2_EXT_ATTR_NEXT(entry);
 419         }
 420 }
 421
 422 static void check_ea_in_inode(e2fsck_t ctx, struct problem_context *pctx,
 423                               struct ea_quota *ea_ibody_quota)
 424 {
 425         struct ext2_super_block *sb = ctx->fs->super;
 426         struct ext2_inode_large *inode;
 427         struct ext2_ext_attr_entry *entry;
 428         char *start, *header, *end;
 429         unsigned int storage_size, remain;
 430         problem_t problem = 0;
 431         region_t region = 0;
 432
 433         ea_ibody_quota->blocks = 0;
 434         ea_ibody_quota->inodes = 0;
 435
 436         inode = (struct ext2_inode_large *) pctx->inode;
 437         storage_size = EXT2_INODE_SIZE(ctx->fs->super) - EXT2_GOOD_OLD_INODE_SIZE -
 438                 inode->i_extra_isize;
 439         header = ((char *) inode) + EXT2_GOOD_OLD_INODE_SIZE +
 440                  inode->i_extra_isize;
 441         end = header + storage_size;
 442         start = header + sizeof(__u32);
 443         entry = (struct ext2_ext_attr_entry *) start;
 444
 445         /* scan all entry's headers first */
 446
 447         /* take finish entry 0UL into account */
 448         remain = storage_size - sizeof(__u32);
 449
 450         region = region_create(0, storage_size);
 451         if (!region) {
 452                 fix_problem(ctx, PR_1_EA_ALLOC_REGION_ABORT, pctx);
 453                 problem = 0;
 454                 ctx->flags |= E2F_FLAG_ABORT;
 455                 return;
 456         }
 457         if (region_allocate(region, 0, sizeof(__u32))) {
 458                 problem = PR_1_INODE_EA_ALLOC_COLLISION;
 459                 goto fix;
 460         }
 461
 462         while (remain >= sizeof(struct ext2_ext_attr_entry) &&
 463                !EXT2_EXT_IS_LAST_ENTRY(entry)) {
 464                 __u32 hash;
 465
 466                 if (region_allocate(region, (char *)entry - (char *)header,
 467                                     EXT2_EXT_ATTR_LEN(entry->e_name_len))) {
 468                         problem = PR_1_INODE_EA_ALLOC_COLLISION;
 469                         goto fix;
 470                 }
 471
 472                 /* header eats this space */
 473                 remain -= sizeof(struct ext2_ext_attr_entry);
 474
 475                 /* is attribute name valid? */
 476                 if (EXT2_EXT_ATTR_SIZE(entry->e_name_len) > remain) {
 477                         pctx->num = entry->e_name_len;
 478                         problem = PR_1_ATTR_NAME_LEN;
 479                         goto fix;
 480                 }
 481
 482                 /* attribute len eats this space */
 483                 remain -= EXT2_EXT_ATTR_SIZE(entry->e_name_len);
 484
 485                 if (entry->e_value_inum == 0) {
 486                         /* check value size */
 487                         if (entry->e_value_size > remain) {
 488                                 pctx->num = entry->e_value_size;
 489                                 problem = PR_1_ATTR_VALUE_SIZE;
 490                                 goto fix;
 491                         }
 492
 493                         if (entry->e_value_size &&
 494                             region_allocate(region,
 495                                             sizeof(__u32) + entry->e_value_offs,
 496                                             EXT2_EXT_ATTR_SIZE(
 497                                                 entry->e_value_size))) {
 498                                 problem = PR_1_INODE_EA_ALLOC_COLLISION;
 499                                 goto fix;
 500                         }
 501
 502                         hash = ext2fs_ext_attr_hash_entry(entry,
 503                                                           start + entry->e_value_offs);
 504
 505                         /* e_hash may be 0 in older inode's ea */
 506                         if (entry->e_hash != 0 && entry->e_hash != hash) {
 507                                 pctx->num = entry->e_hash;
 508                                 problem = PR_1_ATTR_HASH;
 509                                 goto fix;
 510                         }
 511                 } else {
 512                         blk64_t quota_blocks;
 513
 514                         problem = check_large_ea_inode(ctx, entry, pctx,
 515                                                        &quota_blocks);
 516                         if (problem != 0)
 517                                 goto fix;
 518
 519                         ea_ibody_quota->blocks += quota_blocks;
 520                         ea_ibody_quota->inodes++;
 521                 }
 522
 523                 /* If EA value is stored in external inode then it does not
 524                  * consume space here */
 525                 if (entry->e_value_inum == 0)
 526                         remain -= entry->e_value_size;
 527
 528                 entry = EXT2_EXT_ATTR_NEXT(entry);
 529         }
 530
 531         if (region_allocate(region, (char *)entry - (char *)header,
 532                             sizeof(__u32))) {
 533                 problem = PR_1_INODE_EA_ALLOC_COLLISION;
 534                 goto fix;
 535         }
 536 fix:
 537         if (region)
 538                 region_free(region);
 539         /*
 540          * it seems like a corruption. it's very unlikely we could repair
 541          * EA(s) in automatic fashion -bzzz
 542          */
 543         if (problem == 0 || !fix_problem(ctx, problem, pctx)) {
 544                 inc_ea_inode_refs(ctx, pctx,
 545                                   (struct ext2_ext_attr_entry *)start, end);
 546                 return;
 547         }
 548
 549         /* simply remove all possible EA(s) */
 550         *((__u32 *)header) = 0UL;
 551         e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
 552                                 EXT2_INODE_SIZE(sb), "pass1");
 553         ea_ibody_quota->blocks = 0;
 554         ea_ibody_quota->inodes = 0;
 555 }
 556
 557 static int check_inode_extra_negative_epoch(__u32 xtime, __u32 extra) {
 558         return (xtime & (1U << 31)) != 0 &&
 559                 (extra & EXT4_EPOCH_MASK) == EXT4_EPOCH_MASK;
 560 }
 561
 562 #define CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, xtime) \
 563         check_inode_extra_negative_epoch(inode->i_##xtime, \
 564                                          inode->i_##xtime##_extra)
 565
 566 /* When today's date is earlier than 2242, we assume that atimes,
 567  * ctimes, crtimes, and mtimes with years in the range 2310..2378 are
 568  * actually pre-1970 dates mis-encoded.
 569  */
 570 #define EXT4_EXTRA_NEGATIVE_DATE_CUTOFF 2 * (1LL << 32)
 571
 572 static void check_inode_extra_space(e2fsck_t ctx, struct problem_context *pctx,
 573                                     struct ea_quota *ea_ibody_quota)
 574 {
 575         struct ext2_super_block *sb = ctx->fs->super;
 576         struct ext2_inode_large *inode;
 577         __u32 *eamagic;
 578         int min, max;
 579
 580         ea_ibody_quota->blocks = 0;
 581         ea_ibody_quota->inodes = 0;
 582
 583         inode = (struct ext2_inode_large *) pctx->inode;
 584         if (EXT2_INODE_SIZE(sb) == EXT2_GOOD_OLD_INODE_SIZE) {
 585                 /* this isn't large inode. so, nothing to check */
 586                 return;
 587         }
 588
 589 #if 0
 590         printf("inode #%u, i_extra_size %d\n", pctx->ino,
 591                         inode->i_extra_isize);
 592 #endif
 593         /* i_extra_isize must cover i_extra_isize + i_checksum_hi at least */
 594         min = sizeof(inode->i_extra_isize) + sizeof(inode->i_checksum_hi);
 595         max = EXT2_INODE_SIZE(sb) - EXT2_GOOD_OLD_INODE_SIZE;
 596         /*
 597          * For now we will allow i_extra_isize to be 0, but really
 598          * implementations should never allow i_extra_isize to be 0
 599          */
 600         if (inode->i_extra_isize &&
 601             (inode->i_extra_isize < min || inode->i_extra_isize > max ||
 602              inode->i_extra_isize & 3)) {
 603                 if (!fix_problem(ctx, PR_1_EXTRA_ISIZE, pctx))
 604                         return;
 605                 if (inode->i_extra_isize < min || inode->i_extra_isize > max)
 606                         inode->i_extra_isize = sb->s_want_extra_isize;
 607                 else
 608                         inode->i_extra_isize = (inode->i_extra_isize + 3) & ~3;
 609                 e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
 610                                         EXT2_INODE_SIZE(sb), "pass1");
 611         }
 612
 613         /* check if there is no place for an EA header */
 614         if (inode->i_extra_isize >= max - sizeof(__u32))
 615                 return;
 616
 617         eamagic = (__u32 *) (((char *) inode) + EXT2_GOOD_OLD_INODE_SIZE +
 618                         inode->i_extra_isize);
 619         if (*eamagic == EXT2_EXT_ATTR_MAGIC) {
 620                 /* it seems inode has an extended attribute(s) in body */
 621                 check_ea_in_inode(ctx, pctx, ea_ibody_quota);
 622         }
 623
 624         /*
 625          * If the inode's extended atime (ctime, crtime, mtime) is stored in
 626          * the old, invalid format, repair it.
 627          */
 628         if (((sizeof(time_t) <= 4) ||
 629              (((sizeof(time_t) > 4) &&
 630                ctx->now < EXT4_EXTRA_NEGATIVE_DATE_CUTOFF))) &&
 631             (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, atime) ||
 632              CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, ctime) ||
 633              CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, crtime) ||
 634              CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, mtime))) {
 635
 636                 if (!fix_problem(ctx, PR_1_EA_TIME_OUT_OF_RANGE, pctx))
 637                         return;
 638
 639                 if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, atime))
 640                         inode->i_atime_extra &= ~EXT4_EPOCH_MASK;
 641                 if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, ctime))
 642                         inode->i_ctime_extra &= ~EXT4_EPOCH_MASK;
 643                 if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, crtime))
 644                         inode->i_crtime_extra &= ~EXT4_EPOCH_MASK;
 645                 if (CHECK_INODE_EXTRA_NEGATIVE_EPOCH(inode, mtime))
 646                         inode->i_mtime_extra &= ~EXT4_EPOCH_MASK;
 647                 e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
 648                                         EXT2_INODE_SIZE(sb), "pass1");
 649         }
 650
 651 }
 652
 653 /*
 654  * Check to see if the inode might really be a directory, despite i_mode
 655  *
 656  * This is a lot of complexity for something for which I'm not really
 657  * convinced happens frequently in the wild.  If for any reason this
 658  * causes any problems, take this code out.
 659  * [tytso:20070331.0827EDT]
 660  */
 661 static void check_is_really_dir(e2fsck_t ctx, struct problem_context *pctx,
 662                                 char *buf)
 663 {
 664         struct ext2_inode *inode = pctx->inode;
 665         struct ext2_dir_entry   *dirent;
 666         errcode_t               retval;
 667         blk64_t                 blk;
 668         unsigned int            i, rec_len, not_device = 0;
 669         int                     extent_fs;
 670         int                     inlinedata_fs;
 671
 672         /*
 673          * If the mode looks OK, we believe it.  If the first block in
 674          * the i_block array is 0, this cannot be a directory. If the
 675          * inode is extent-mapped, it is still the case that the latter
 676          * cannot be 0 - the magic number in the extent header would make
 677          * it nonzero.
 678          */
 679         if (LINUX_S_ISDIR(inode->i_mode) || LINUX_S_ISREG(inode->i_mode) ||
 680             LINUX_S_ISLNK(inode->i_mode) || inode->i_block[0] == 0)
 681                 return;
 682
 683         /*
 684          * Check the block numbers in the i_block array for validity:
 685          * zero blocks are skipped (but the first one cannot be zero -
 686          * see above), other blocks are checked against the first and
 687          * max data blocks (from the the superblock) and against the
 688          * block bitmap. Any invalid block found means this cannot be
 689          * a directory.
 690          *
 691          * If there are non-zero blocks past the fourth entry, then
 692          * this cannot be a device file: we remember that for the next
 693          * check.
 694          *
 695          * For extent mapped files, we don't do any sanity checking:
 696          * just try to get the phys block of logical block 0 and run
 697          * with it.
 698          *
 699          * For inline data files, we just try to get the size of inline
 700          * data.  If it's true, we will treat it as a directory.
 701          */
 702
 703         extent_fs = ext2fs_has_feature_extents(ctx->fs->super);
 704         inlinedata_fs = ext2fs_has_feature_inline_data(ctx->fs->super);
 705         if (inlinedata_fs && (inode->i_flags & EXT4_INLINE_DATA_FL)) {
 706                 size_t size;
 707                 __u32 dotdot;
 708                 unsigned int rec_len2;
 709                 struct ext2_dir_entry de;
 710
 711                 if (ext2fs_inline_data_size(ctx->fs, pctx->ino, &size))
 712                         return;
 713                 /*
 714                  * If the size isn't a multiple of 4, it's probably not a
 715                  * directory??
 716                  */
 717                 if (size & 3)
 718                         return;
 719                 /*
 720                  * If the first 10 bytes don't look like a directory entry,
 721                  * it's probably not a directory.
 722                  */
 723                 memcpy(&dotdot, inode->i_block, sizeof(dotdot));
 724                 memcpy(&de, ((char *)inode->i_block) + EXT4_INLINE_DATA_DOTDOT_SIZE,
 725                        EXT2_DIR_REC_LEN(0));
 726                 dotdot = ext2fs_le32_to_cpu(dotdot);
 727                 de.inode = ext2fs_le32_to_cpu(de.inode);
 728                 de.rec_len = ext2fs_le16_to_cpu(de.rec_len);
 729                 ext2fs_get_rec_len(ctx->fs, &de, &rec_len2);
 730                 if (dotdot >= ctx->fs->super->s_inodes_count ||
 731                     (dotdot < EXT2_FIRST_INO(ctx->fs->super) &&
 732                      dotdot != EXT2_ROOT_INO) ||
 733                     de.inode >= ctx->fs->super->s_inodes_count ||
 734                     (de.inode < EXT2_FIRST_INO(ctx->fs->super) &&
 735                      de.inode != 0) ||
 736                     rec_len2 > EXT4_MIN_INLINE_DATA_SIZE -
 737                               EXT4_INLINE_DATA_DOTDOT_SIZE)
 738                         return;
 739                 /* device files never have a "system.data" entry */
 740                 goto isdir;
 741         } else if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) {
 742                 /* extent mapped */
 743                 if  (ext2fs_bmap2(ctx->fs, pctx->ino, inode, 0, 0, 0, 0,
 744                                  &blk))
 745                         return;
 746                 /* device files are never extent mapped */
 747                 not_device++;
 748         } else {
 749                 for (i=0; i < EXT2_N_BLOCKS; i++) {
 750                         blk = inode->i_block[i];
 751                         if (!blk)
 752                                 continue;
 753                         if (i >= 4)
 754                                 not_device++;
 755
 756                         if (blk < ctx->fs->super->s_first_data_block ||
 757                             blk >= ext2fs_blocks_count(ctx->fs->super) ||
 758                             ext2fs_fast_test_block_bitmap2(ctx->block_found_map,
 759                                                            blk))
 760                                 return; /* Invalid block, can't be dir */
 761                 }
 762                 blk = inode->i_block[0];
 763         }
 764
 765         /*
 766          * If the mode says this is a device file and the i_links_count field
 767          * is sane and we have not ruled it out as a device file previously,
 768          * we declare it a device file, not a directory.
 769          */
 770         if ((LINUX_S_ISCHR(inode->i_mode) || LINUX_S_ISBLK(inode->i_mode)) &&
 771             (inode->i_links_count == 1) && !not_device)
 772                 return;
 773
 774         /* read the first block */
 775         ehandler_operation(_("reading directory block"));
 776         retval = ext2fs_read_dir_block4(ctx->fs, blk, buf, 0, pctx->ino);
 777         ehandler_operation(0);
 778         if (retval)
 779                 return;
 780
 781         dirent = (struct ext2_dir_entry *) buf;
 782         retval = ext2fs_get_rec_len(ctx->fs, dirent, &rec_len);
 783         if (retval)
 784                 return;
 785         if ((ext2fs_dirent_name_len(dirent) != 1) ||
 786             (dirent->name[0] != '.') ||
 787             (dirent->inode != pctx->ino) ||
 788             (rec_len < 12) ||
 789             (rec_len % 4) ||
 790             (rec_len >= ctx->fs->blocksize - 12))
 791                 return;
 792
 793         dirent = (struct ext2_dir_entry *) (buf + rec_len);
 794         retval = ext2fs_get_rec_len(ctx->fs, dirent, &rec_len);
 795         if (retval)
 796                 return;
 797         if ((ext2fs_dirent_name_len(dirent) != 2) ||
 798             (dirent->name[0] != '.') ||
 799             (dirent->name[1] != '.') ||
 800             (rec_len < 12) ||
 801             (rec_len % 4))
 802                 return;
 803
 804 isdir:
 805         if (fix_problem(ctx, PR_1_TREAT_AS_DIRECTORY, pctx)) {
 806                 inode->i_mode = (inode->i_mode & 07777) | LINUX_S_IFDIR;
 807                 e2fsck_write_inode_full(ctx, pctx->ino, inode,
 808                                         EXT2_INODE_SIZE(ctx->fs->super),
 809                                         "check_is_really_dir");
 810         }
 811 }
 812
 813 extern errcode_t e2fsck_setup_icount(e2fsck_t ctx, const char *icount_name,
 814                                      int flags, ext2_icount_t hint,
 815                                      ext2_icount_t *ret)
 816 {
 817         unsigned int            threshold;
 818         unsigned int            save_type;
 819         ext2_ino_t              num_dirs;
 820         errcode_t               retval;
 821         char                    *tdb_dir;
 822         int                     enable;
 823
 824         *ret = 0;
 825
 826         profile_get_string(ctx->profile, "scratch_files", "directory", 0, 0,
 827                            &tdb_dir);
 828         profile_get_uint(ctx->profile, "scratch_files",
 829                          "numdirs_threshold", 0, 0, &threshold);
 830         profile_get_boolean(ctx->profile, "scratch_files",
 831                             "icount", 0, 1, &enable);
 832
 833         retval = ext2fs_get_num_dirs(ctx->fs, &num_dirs);
 834         if (retval)
 835                 num_dirs = 1024;        /* Guess */
 836
 837         if (enable && tdb_dir && !access(tdb_dir, W_OK) &&
 838             (!threshold || num_dirs > threshold)) {
 839                 retval = ext2fs_create_icount_tdb(ctx->fs, tdb_dir,
 840                                                   flags, ret);
 841                 if (retval == 0)
 842                         return 0;
 843         }
 844         e2fsck_set_bitmap_type(ctx->fs, EXT2FS_BMAP64_RBTREE, icount_name,
 845                                &save_type);
 846         if (ctx->options & E2F_OPT_ICOUNT_FULLMAP)
 847                 flags |= EXT2_ICOUNT_OPT_FULLMAP;
 848         retval = ext2fs_create_icount2(ctx->fs, flags, 0, hint, ret);
 849         ctx->fs->default_bitmap_type = save_type;
 850         return retval;
 851 }
 852
 853 static errcode_t recheck_bad_inode_checksum(ext2_filsys fs, ext2_ino_t ino,
 854                                             e2fsck_t ctx,
 855                                             struct problem_context *pctx)
 856 {
 857         errcode_t retval;
 858         struct ext2_inode_large inode;
 859
 860         /*
 861          * Reread inode.  If we don't see checksum error, then this inode
 862          * has been fixed elsewhere.
 863          */
 864         ctx->stashed_ino = 0;
 865         retval = ext2fs_read_inode_full(fs, ino, (struct ext2_inode *)&inode,
 866                                         sizeof(inode));
 867         if (retval && retval != EXT2_ET_INODE_CSUM_INVALID)
 868                 return retval;
 869         if (!retval)
 870                 return 0;
 871
 872         /*
 873          * Checksum still doesn't match.  That implies that the inode passes
 874          * all the sanity checks, so maybe the checksum is simply corrupt.
 875          * See if the user will go for fixing that.
 876          */
 877         if (!fix_problem(ctx, PR_1_INODE_ONLY_CSUM_INVALID, pctx))
 878                 return 0;
 879
 880         retval = ext2fs_write_inode_full(fs, ino, (struct ext2_inode *)&inode,
 881                                          sizeof(inode));
 882         return retval;
 883 }
 884
 885 static void reserve_block_for_root_repair(e2fsck_t ctx)
 886 {
 887         blk64_t         blk = 0;
 888         errcode_t       err;
 889         ext2_filsys     fs = ctx->fs;
 890
 891         ctx->root_repair_block = 0;
 892         if (ext2fs_test_inode_bitmap2(ctx->inode_used_map, EXT2_ROOT_INO))
 893                 return;
 894
 895         err = ext2fs_new_block2(fs, 0, ctx->block_found_map, &blk);
 896         if (err)
 897                 return;
 898         ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
 899         ctx->root_repair_block = blk;
 900 }
 901
 902 static void reserve_block_for_lnf_repair(e2fsck_t ctx)
 903 {
 904         blk64_t         blk = 0;
 905         errcode_t       err;
 906         ext2_filsys     fs = ctx->fs;
 907         static const char name[] = "lost+found";
 908         ext2_ino_t      ino;
 909
 910         ctx->lnf_repair_block = 0;
 911         if (!ext2fs_lookup(fs, EXT2_ROOT_INO, name, sizeof(name)-1, 0, &ino))
 912                 return;
 913
 914         err = ext2fs_new_block2(fs, 0, ctx->block_found_map, &blk);
 915         if (err)
 916                 return;
 917         ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
 918         ctx->lnf_repair_block = blk;
 919 }
 920
 921 static errcode_t get_inline_data_ea_size(ext2_filsys fs, ext2_ino_t ino,
 922                                          size_t *sz)
 923 {
 924         void *p;
 925         struct ext2_xattr_handle *handle;
 926         errcode_t retval;
 927
 928         retval = ext2fs_xattrs_open(fs, ino, &handle);
 929         if (retval)
 930                 return retval;
 931
 932         retval = ext2fs_xattrs_read(handle);
 933         if (retval)
 934                 goto err;
 935
 936         retval = ext2fs_xattr_get(handle, "system.data", &p, sz);
 937         if (retval)
 938                 goto err;
 939         ext2fs_free_mem(&p);
 940 err:
 941         (void) ext2fs_xattrs_close(&handle);
 942         return retval;
 943 }
 944
 945 static void finish_processing_inode(e2fsck_t ctx, ext2_ino_t ino,
 946                                     struct problem_context *pctx,
 947                                     int failed_csum)
 948 {
 949         if (!failed_csum)
 950                 return;
 951
 952         /*
 953          * If the inode failed the checksum and the user didn't
 954          * clear the inode, test the checksum again -- if it still
 955          * fails, ask the user if the checksum should be corrected.
 956          */
 957         pctx->errcode = recheck_bad_inode_checksum(ctx->fs, ino, ctx, pctx);
 958         if (pctx->errcode)
 959                 ctx->flags |= E2F_FLAG_ABORT;
 960 }
 961 #define FINISH_INODE_LOOP(ctx, ino, pctx, failed_csum) \
 962         do { \
 963                 finish_processing_inode((ctx), (ino), (pctx), (failed_csum)); \
 964                 if ((ctx)->flags & E2F_FLAG_ABORT) \
 965                         return; \
 966         } while (0)
 967
 968 static int could_be_block_map(ext2_filsys fs, struct ext2_inode *inode)
 969 {
 970         __u32 x;
 971         int i;
 972
 973         for (i = 0; i < EXT2_N_BLOCKS; i++) {
 974                 x = inode->i_block[i];
 975 #ifdef WORDS_BIGENDIAN
 976                 x = ext2fs_swab32(x);
 977 #endif
 978                 if (x >= ext2fs_blocks_count(fs->super))
 979                         return 0;
 980         }
 981
 982         return 1;
 983 }
 984
 985 /*
 986  * Figure out what to do with an inode that has both extents and inline data
 987  * inode flags set.  Returns -1 if we decide to erase the inode, 0 otherwise.
 988  */
 989 static int fix_inline_data_extents_file(e2fsck_t ctx,
 990                                         ext2_ino_t ino,
 991                                         struct ext2_inode *inode,
 992                                         int inode_size,
 993                                         struct problem_context *pctx)
 994 {
 995         size_t max_inline_ea_size;
 996         ext2_filsys fs = ctx->fs;
 997         int dirty = 0;
 998
 999         /* Both feature flags not set?  Just run the regular checks */
1000         if (!ext2fs_has_feature_extents(fs->super) &&
1001             !ext2fs_has_feature_inline_data(fs->super))
1002                 return 0;
1003
1004         /* Clear both flags if it's a special file */
1005         if (LINUX_S_ISCHR(inode->i_mode) ||
1006             LINUX_S_ISBLK(inode->i_mode) ||
1007             LINUX_S_ISFIFO(inode->i_mode) ||
1008             LINUX_S_ISSOCK(inode->i_mode)) {
1009                 check_extents_inlinedata(ctx, pctx);
1010                 return 0;
1011         }
1012
1013         /* If it looks like an extent tree, try to clear inlinedata */
1014         if (ext2fs_extent_header_verify(inode->i_block,
1015                                  sizeof(inode->i_block)) == 0 &&
1016             fix_problem(ctx, PR_1_CLEAR_INLINE_DATA_FOR_EXTENT, pctx)) {
1017                 inode->i_flags &= ~EXT4_INLINE_DATA_FL;
1018                 dirty = 1;
1019                 goto out;
1020         }
1021
1022         /* If it looks short enough to be inline data, try to clear extents */
1023         if (inode_size > EXT2_GOOD_OLD_INODE_SIZE)
1024                 max_inline_ea_size = inode_size -
1025                                      (EXT2_GOOD_OLD_INODE_SIZE +
1026                                       ((struct ext2_inode_large *)inode)->i_extra_isize);
1027         else
1028                 max_inline_ea_size = 0;
1029         if (EXT2_I_SIZE(inode) <
1030             EXT4_MIN_INLINE_DATA_SIZE + max_inline_ea_size &&
1031             fix_problem(ctx, PR_1_CLEAR_EXTENT_FOR_INLINE_DATA, pctx)) {
1032                 inode->i_flags &= ~EXT4_EXTENTS_FL;
1033                 dirty = 1;
1034                 goto out;
1035         }
1036
1037         /*
1038          * Too big for inline data, but no evidence of extent tree -
1039          * maybe it's a block map file?  If the mappings all look valid?
1040          */
1041         if (could_be_block_map(fs, inode) &&
1042             fix_problem(ctx, PR_1_CLEAR_EXTENT_INLINE_DATA_FLAGS, pctx)) {
1043 #ifdef WORDS_BIGENDIAN
1044                 int i;
1045
1046                 for (i = 0; i < EXT2_N_BLOCKS; i++)
1047                         inode->i_block[i] = ext2fs_swab32(inode->i_block[i]);
1048 #endif
1049
1050                 inode->i_flags &= ~(EXT4_EXTENTS_FL | EXT4_INLINE_DATA_FL);
1051                 dirty = 1;
1052                 goto out;
1053         }
1054
1055         /* Oh well, just clear the busted inode. */
1056         if (fix_problem(ctx, PR_1_CLEAR_EXTENT_INLINE_DATA_INODE, pctx)) {
1057                 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1058                 return -1;
1059         }
1060
1061 out:
1062         if (dirty)
1063                 e2fsck_write_inode(ctx, ino, inode, "pass1");
1064
1065         return 0;
1066 }
1067
1068 static void pass1_readahead(e2fsck_t ctx, dgrp_t *group, ext2_ino_t *next_ino)
1069 {
1070         ext2_ino_t inodes_in_group = 0, inodes_per_block, inodes_per_buffer;
1071         dgrp_t start = *group, grp;
1072         blk64_t blocks_to_read = 0;
1073         errcode_t err = EXT2_ET_INVALID_ARGUMENT;
1074
1075         if (ctx->readahead_kb == 0)
1076                 goto out;
1077
1078         /* Keep iterating groups until we have enough to readahead */
1079         inodes_per_block = EXT2_INODES_PER_BLOCK(ctx->fs->super);
1080         for (grp = start; grp < ctx->fs->group_desc_count; grp++) {
1081                 if (ext2fs_bg_flags_test(ctx->fs, grp, EXT2_BG_INODE_UNINIT))
1082                         continue;
1083                 inodes_in_group = ctx->fs->super->s_inodes_per_group -
1084                                         ext2fs_bg_itable_unused(ctx->fs, grp);
1085                 blocks_to_read += (inodes_in_group + inodes_per_block - 1) /
1086                                         inodes_per_block;
1087                 if (blocks_to_read * ctx->fs->blocksize >
1088                     ctx->readahead_kb * 1024)
1089                         break;
1090         }
1091
1092         err = e2fsck_readahead(ctx->fs, E2FSCK_READA_ITABLE, start,
1093                                grp - start + 1);
1094         if (err == EAGAIN) {
1095                 ctx->readahead_kb /= 2;
1096                 err = 0;
1097         }
1098
1099 out:
1100         if (err) {
1101                 /* Error; disable itable readahead */
1102                 *group = ctx->fs->group_desc_count;
1103                 *next_ino = ctx->fs->super->s_inodes_count;
1104         } else {
1105                 /*
1106                  * Don't do more readahead until we've reached the first inode
1107                  * of the last inode scan buffer block for the last group.
1108                  */
1109                 *group = grp + 1;
1110                 inodes_per_buffer = (ctx->inode_buffer_blocks ?
1111                                      ctx->inode_buffer_blocks :
1112                                      EXT2_INODE_SCAN_DEFAULT_BUFFER_BLOCKS) *
1113                                     ctx->fs->blocksize /
1114                                     EXT2_INODE_SIZE(ctx->fs->super);
1115                 inodes_in_group--;
1116                 *next_ino = inodes_in_group -
1117                             (inodes_in_group % inodes_per_buffer) + 1 +
1118                             (grp * ctx->fs->super->s_inodes_per_group);
1119         }
1120 }
1121
1122 /*
1123  * Check if the passed ino is one of the used superblock quota inodes.
1124  *
1125  * Before the quota inodes were journaled, older superblock quota inodes
1126  * were just regular files in the filesystem and not reserved inodes.  This
1127  * checks if the passed ino is one of the s_*_quota_inum superblock fields,
1128  * which may not always be the same as the EXT4_*_QUOTA_INO fields.
1129  */
1130 static int quota_inum_is_super(struct ext2_super_block *sb, ext2_ino_t ino)
1131 {
1132         enum quota_type qtype;
1133
1134         for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1135                 if (*quota_sb_inump(sb, qtype) == ino)
1136                         return 1;
1137
1138         return 0;
1139 }
1140
1141 /*
1142  * Check if the passed ino is one of the reserved quota inodes.
1143  * This checks if the inode number is one of the reserved EXT4_*_QUOTA_INO
1144  * inodes.  These inodes may or may not be in use by the quota feature.
1145  */
1146 static int quota_inum_is_reserved(ext2_filsys fs, ext2_ino_t ino)
1147 {
1148         enum quota_type qtype;
1149
1150         for (qtype = 0; qtype < MAXQUOTAS; qtype++)
1151                 if (quota_type2inum(qtype, fs->super) == ino)
1152                         return 1;
1153
1154         return 0;
1155 }
1156
1157 static int e2fsck_should_abort(e2fsck_t ctx)
1158 {
1159         e2fsck_t global_ctx;
1160
1161         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1162                 return 1;
1163
1164         if (ctx->global_ctx) {
1165                 global_ctx = ctx->global_ctx;
1166                 if (global_ctx->flags & E2F_FLAG_SIGNAL_MASK)
1167                         return 1;
1168         }
1169         return 0;
1170 }
1171
1172 void e2fsck_pass1_run(e2fsck_t ctx)
1173 {
1174         int     i;
1175         ext2_filsys fs = ctx->fs;
1176         ext2_ino_t      ino = 0;
1177         struct ext2_inode *inode = NULL;
1178         ext2_inode_scan scan = NULL;
1179         char            *block_buf = NULL;
1180 #ifdef RESOURCE_TRACK
1181         struct resource_track   rtrack;
1182 #endif
1183         unsigned char   frag, fsize;
1184         struct          problem_context pctx;
1185         struct          scan_callback_struct scan_struct;
1186         struct ext2_super_block *sb = ctx->fs->super;
1187         const char      *old_op;
1188         const char      *eop_next_inode = _("getting next inode from scan");
1189         int             imagic_fs, extent_fs, inlinedata_fs, casefold_fs;
1190         int             low_dtime_check = 1;
1191         unsigned int    inode_size = EXT2_INODE_SIZE(fs->super);
1192         unsigned int    bufsize;
1193         int             failed_csum = 0;
1194         ext2_ino_t      ino_threshold = 0;
1195         dgrp_t          ra_group = 0;
1196         struct ea_quota ea_ibody_quota;
1197         struct process_inode_block *inodes_to_process;
1198         int             process_inode_count;
1199
1200         init_resource_track(&rtrack, ctx->fs->io);
1201         clear_problem_context(&pctx);
1202
1203         /* If we can do readahead, figure out how many groups to pull in. */
1204         if (!e2fsck_can_readahead(ctx->fs))
1205                 ctx->readahead_kb = 0;
1206         else if (ctx->readahead_kb == ~0ULL)
1207                 ctx->readahead_kb = e2fsck_guess_readahead(ctx->fs);
1208         pass1_readahead(ctx, &ra_group, &ino_threshold);
1209
1210         if (!(ctx->options & E2F_OPT_PREEN))
1211                 fix_problem(ctx, PR_1_PASS_HEADER, &pctx);
1212
1213         if (ext2fs_has_feature_dir_index(fs->super) &&
1214             !(ctx->options & E2F_OPT_NO)) {
1215                 if (ext2fs_u32_list_create(&ctx->dirs_to_hash, 50))
1216                         ctx->dirs_to_hash = 0;
1217         }
1218
1219 #ifdef MTRACE
1220         mtrace_print("Pass 1");
1221 #endif
1222
1223         imagic_fs = ext2fs_has_feature_imagic_inodes(sb);
1224         extent_fs = ext2fs_has_feature_extents(sb);
1225         inlinedata_fs = ext2fs_has_feature_inline_data(sb);
1226         casefold_fs = ext2fs_has_feature_casefold(sb);
1227
1228         /*
1229          * Allocate bitmaps structures
1230          */
1231         pctx.errcode = e2fsck_allocate_inode_bitmap(fs, _("in-use inode map"),
1232                                                     EXT2FS_BMAP64_RBTREE,
1233                                                     "inode_used_map",
1234                                                     &ctx->inode_used_map);
1235         if (pctx.errcode) {
1236                 pctx.num = 1;
1237                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1238                 ctx->flags |= E2F_FLAG_ABORT;
1239                 return;
1240         }
1241         pctx.errcode = e2fsck_allocate_inode_bitmap(fs,
1242                         _("directory inode map"),
1243                         EXT2FS_BMAP64_AUTODIR,
1244                         "inode_dir_map", &ctx->inode_dir_map);
1245         if (pctx.errcode) {
1246                 pctx.num = 2;
1247                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1248                 ctx->flags |= E2F_FLAG_ABORT;
1249                 return;
1250         }
1251         pctx.errcode = e2fsck_allocate_inode_bitmap(fs,
1252                         _("regular file inode map"), EXT2FS_BMAP64_RBTREE,
1253                         "inode_reg_map", &ctx->inode_reg_map);
1254         if (pctx.errcode) {
1255                 pctx.num = 6;
1256                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1257                 ctx->flags |= E2F_FLAG_ABORT;
1258                 return;
1259         }
1260         pctx.errcode = e2fsck_allocate_subcluster_bitmap(fs,
1261                         _("in-use block map"), EXT2FS_BMAP64_RBTREE,
1262                         "block_found_map", &ctx->block_found_map);
1263         if (pctx.errcode) {
1264                 pctx.num = 1;
1265                 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
1266                 ctx->flags |= E2F_FLAG_ABORT;
1267                 return;
1268         }
1269         pctx.errcode = e2fsck_allocate_block_bitmap(fs,
1270                         _("metadata block map"), EXT2FS_BMAP64_RBTREE,
1271                         "block_metadata_map", &ctx->block_metadata_map);
1272         if (pctx.errcode) {
1273                 pctx.num = 1;
1274                 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
1275                 ctx->flags |= E2F_FLAG_ABORT;
1276                 return;
1277         }
1278         if (casefold_fs) {
1279                 pctx.errcode =
1280                         e2fsck_allocate_inode_bitmap(fs,
1281                                                      _("inode casefold map"),
1282                                                      EXT2FS_BMAP64_RBTREE,
1283                                                      "inode_casefold_map",
1284                                                      &ctx->inode_casefold_map);
1285                 if (pctx.errcode) {
1286                         pctx.num = 1;
1287                         fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1288                         ctx->flags |= E2F_FLAG_ABORT;
1289                         return;
1290                 }
1291         }
1292         pctx.errcode = e2fsck_setup_icount(ctx, "inode_link_info", 0, NULL,
1293                                            &ctx->inode_link_info);
1294         if (pctx.errcode) {
1295                 fix_problem(ctx, PR_1_ALLOCATE_ICOUNT, &pctx);
1296                 ctx->flags |= E2F_FLAG_ABORT;
1297                 return;
1298         }
1299         bufsize = inode_size;
1300         if (bufsize < sizeof(struct ext2_inode_large))
1301                 bufsize = sizeof(struct ext2_inode_large);
1302         inode = (struct ext2_inode *)
1303                 e2fsck_allocate_memory(ctx, bufsize, "scratch inode");
1304
1305         inodes_to_process = (struct process_inode_block *)
1306                 e2fsck_allocate_memory(ctx,
1307                                        (ctx->process_inode_size *
1308                                         sizeof(struct process_inode_block)),
1309                                        "array of inodes to process");
1310         process_inode_count = 0;
1311
1312         pctx.errcode = ext2fs_init_dblist(fs, 0);
1313         if (pctx.errcode) {
1314                 fix_problem(ctx, PR_1_ALLOCATE_DBCOUNT, &pctx);
1315                 ctx->flags |= E2F_FLAG_ABORT;
1316                 goto endit;
1317         }
1318
1319         /*
1320          * If the last orphan field is set, clear it, since the pass1
1321          * processing will automatically find and clear the orphans.
1322          * In the future, we may want to try using the last_orphan
1323          * linked list ourselves, but for now, we clear it so that the
1324          * ext3 mount code won't get confused.
1325          */
1326         if (!(ctx->options & E2F_OPT_READONLY)) {
1327                 if (fs->super->s_last_orphan) {
1328                         fs->super->s_last_orphan = 0;
1329                         ext2fs_mark_super_dirty(fs);
1330                 }
1331         }
1332
1333         mark_table_blocks(ctx);
1334         pctx.errcode = ext2fs_convert_subcluster_bitmap(fs,
1335                                                 &ctx->block_found_map);
1336         if (pctx.errcode) {
1337                 fix_problem(ctx, PR_1_CONVERT_SUBCLUSTER, &pctx);
1338                 ctx->flags |= E2F_FLAG_ABORT;
1339                 goto endit;
1340         }
1341         block_buf = (char *) e2fsck_allocate_memory(ctx, fs->blocksize * 3,
1342                                                     "block interate buffer");
1343         if (EXT2_INODE_SIZE(fs->super) == EXT2_GOOD_OLD_INODE_SIZE)
1344                 e2fsck_use_inode_shortcuts(ctx, 1);
1345         e2fsck_intercept_block_allocations(ctx);
1346         old_op = ehandler_operation(_("opening inode scan"));
1347         pctx.errcode = ext2fs_open_inode_scan(fs, ctx->inode_buffer_blocks,
1348                                               &scan);
1349         ehandler_operation(old_op);
1350         if (pctx.errcode) {
1351                 fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx);
1352                 ctx->flags |= E2F_FLAG_ABORT;
1353                 goto endit;
1354         }
1355         ext2fs_inode_scan_flags(scan, EXT2_SF_SKIP_MISSING_ITABLE |
1356                                       EXT2_SF_WARN_GARBAGE_INODES, 0);
1357         ctx->stashed_inode = inode;
1358         scan_struct.ctx = ctx;
1359         scan_struct.block_buf = block_buf;
1360         scan_struct.inodes_to_process = inodes_to_process;
1361         scan_struct.process_inode_count = &process_inode_count;
1362         ext2fs_set_inode_callback(scan, scan_callback, &scan_struct);
1363         if (ctx->progress && ((ctx->progress)(ctx, 1, 0,
1364                                               ctx->fs->group_desc_count)))
1365                 goto endit;
1366         if ((fs->super->s_wtime &&
1367              fs->super->s_wtime < fs->super->s_inodes_count) ||
1368             (fs->super->s_mtime &&
1369              fs->super->s_mtime < fs->super->s_inodes_count) ||
1370             (fs->super->s_mkfs_time &&
1371              fs->super->s_mkfs_time < fs->super->s_inodes_count))
1372                 low_dtime_check = 0;
1373
1374         if (ext2fs_has_feature_mmp(fs->super) &&
1375             fs->super->s_mmp_block > fs->super->s_first_data_block &&
1376             fs->super->s_mmp_block < ext2fs_blocks_count(fs->super))
1377                 ext2fs_mark_block_bitmap2(ctx->block_found_map,
1378                                           fs->super->s_mmp_block);
1379
1380         /* Set up ctx->lost_and_found if possible */
1381         (void) e2fsck_get_lost_and_found(ctx, 0);
1382
1383 #ifdef HAVE_PTHREAD
1384         if (ctx->global_ctx) {
1385                 if (ctx->options & E2F_OPT_DEBUG &&
1386                     ctx->options & E2F_OPT_MULTITHREAD)
1387                         fprintf(stderr, "thread %d jumping to group %d\n",
1388                                         ctx->thread_info.et_thread_index,
1389                                         ctx->thread_info.et_group_start);
1390                 pctx.errcode = ext2fs_inode_scan_goto_blockgroup(scan,
1391                                         ctx->thread_info.et_group_start);
1392                 if (pctx.errcode) {
1393                         fix_problem(ctx, PR_1_PASS_HEADER, &pctx);
1394                         ctx->flags |= E2F_FLAG_ABORT;
1395                         goto endit;
1396                 }
1397         }
1398 #endif
1399
1400         while (1) {
1401                 if (ino % (fs->super->s_inodes_per_group * 4) == 1) {
1402                         if (e2fsck_mmp_update(fs))
1403                                 fatal_error(ctx, 0);
1404                 }
1405                 old_op = ehandler_operation(eop_next_inode);
1406                 pctx.errcode = ext2fs_get_next_inode_full(scan, &ino,
1407                                                           inode, inode_size);
1408                 if (ino > ino_threshold)
1409                         pass1_readahead(ctx, &ra_group, &ino_threshold);
1410                 ehandler_operation(old_op);
1411                 if (e2fsck_should_abort(ctx))
1412                         goto endit;
1413                 if (pctx.errcode == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE) {
1414                         /*
1415                          * If badblocks says badblocks is bad, offer to clear
1416                          * the list, update the in-core bb list, and restart
1417                          * the inode scan.
1418                          */
1419                         if (ino == EXT2_BAD_INO &&
1420                             fix_problem(ctx, PR_1_BADBLOCKS_IN_BADBLOCKS,
1421                                         &pctx)) {
1422                                 errcode_t err;
1423
1424                                 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1425                                 ext2fs_badblocks_list_free(ctx->fs->badblocks);
1426                                 ctx->fs->badblocks = NULL;
1427                                 err = ext2fs_read_bb_inode(ctx->fs,
1428                                                         &ctx->fs->badblocks);
1429                                 if (err) {
1430                                         fix_problem(ctx, PR_1_ISCAN_ERROR,
1431                                                     &pctx);
1432                                         ctx->flags |= E2F_FLAG_ABORT;
1433                                 } else
1434                                         ctx->flags |= E2F_FLAG_RESTART;
1435                                 goto endit;
1436                         }
1437                         if (!ctx->inode_bb_map)
1438                                 alloc_bb_map(ctx);
1439                         ext2fs_mark_inode_bitmap2(ctx->inode_bb_map, ino);
1440                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1441                         continue;
1442                 }
1443                 if (pctx.errcode == EXT2_ET_SCAN_FINISHED)
1444                         break;
1445                 if (pctx.errcode &&
1446                     pctx.errcode != EXT2_ET_INODE_CSUM_INVALID &&
1447                     pctx.errcode != EXT2_ET_INODE_IS_GARBAGE) {
1448                         fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx);
1449                         ctx->flags |= E2F_FLAG_ABORT;
1450                         goto endit;
1451                 }
1452                 if (!ino)
1453                         break;
1454 #ifdef HAVE_PTHREAD
1455                 if (ctx->global_ctx)
1456                         ctx->thread_info.et_inode_number++;
1457 #endif
1458                 pctx.ino = ino;
1459                 pctx.inode = inode;
1460                 ctx->stashed_ino = ino;
1461
1462                 /* Clear trashed inode? */
1463                 if (pctx.errcode == EXT2_ET_INODE_IS_GARBAGE &&
1464                     inode->i_links_count > 0 &&
1465                     fix_problem(ctx, PR_1_INODE_IS_GARBAGE, &pctx)) {
1466                         pctx.errcode = 0;
1467                         e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1468                 }
1469                 failed_csum = pctx.errcode != 0;
1470
1471                 /*
1472                  * Check for inodes who might have been part of the
1473                  * orphaned list linked list.  They should have gotten
1474                  * dealt with by now, unless the list had somehow been
1475                  * corrupted.
1476                  *
1477                  * FIXME: In the future, inodes which are still in use
1478                  * (and which are therefore) pending truncation should
1479                  * be handled specially.  Right now we just clear the
1480                  * dtime field, and the normal e2fsck handling of
1481                  * inodes where i_size and the inode blocks are
1482                  * inconsistent is to fix i_size, instead of releasing
1483                  * the extra blocks.  This won't catch the inodes that
1484                  * was at the end of the orphan list, but it's better
1485                  * than nothing.  The right answer is that there
1486                  * shouldn't be any bugs in the orphan list handling.  :-)
1487                  */
1488                 if (inode->i_dtime && low_dtime_check &&
1489                     inode->i_dtime < ctx->fs->super->s_inodes_count) {
1490                         if (fix_problem(ctx, PR_1_LOW_DTIME, &pctx)) {
1491                                 inode->i_dtime = inode->i_links_count ?
1492                                         0 : ctx->now;
1493                                 e2fsck_write_inode(ctx, ino, inode,
1494                                                    "pass1");
1495                                 failed_csum = 0;
1496                         }
1497                 }
1498
1499                 if (inode->i_links_count) {
1500                         pctx.errcode = ext2fs_icount_store(ctx->inode_link_info,
1501                                            ino, inode->i_links_count);
1502                         if (pctx.errcode) {
1503                                 pctx.num = inode->i_links_count;
1504                                 fix_problem(ctx, PR_1_ICOUNT_STORE, &pctx);
1505                                 ctx->flags |= E2F_FLAG_ABORT;
1506                                 goto endit;
1507                         }
1508                 } else if ((ino >= EXT2_FIRST_INODE(fs->super)) &&
1509                            !quota_inum_is_reserved(fs, ino)) {
1510                         if (!inode->i_dtime && inode->i_mode) {
1511                                 if (fix_problem(ctx,
1512                                             PR_1_ZERO_DTIME, &pctx)) {
1513                                         inode->i_dtime = ctx->now;
1514                                         e2fsck_write_inode(ctx, ino, inode,
1515                                                            "pass1");
1516                                         failed_csum = 0;
1517                                 }
1518                         }
1519                         FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1520                         continue;
1521                 }
1522
1523                 if ((inode->i_flags & EXT4_CASEFOLD_FL) &&
1524                     ((!LINUX_S_ISDIR(inode->i_mode) &&
1525                       fix_problem(ctx, PR_1_CASEFOLD_NONDIR, &pctx)) ||
1526                      (!casefold_fs &&
1527                       fix_problem(ctx, PR_1_CASEFOLD_FEATURE, &pctx)))) {
1528                         inode->i_flags &= ~EXT4_CASEFOLD_FL;
1529                         e2fsck_write_inode(ctx, ino, inode, "pass1");
1530                 }
1531
1532                 /* Conflicting inlinedata/extents inode flags? */
1533                 if ((inode->i_flags & EXT4_INLINE_DATA_FL) &&
1534                     (inode->i_flags & EXT4_EXTENTS_FL)) {
1535                         int res = fix_inline_data_extents_file(ctx, ino, inode,
1536                                                                inode_size,
1537                                                                &pctx);
1538                         if (res < 0) {
1539                                 /* skip FINISH_INODE_LOOP */
1540                                 continue;
1541                         }
1542                 }
1543
1544                 /* Test for incorrect inline_data flags settings. */
1545                 if ((inode->i_flags & EXT4_INLINE_DATA_FL) && !inlinedata_fs &&
1546                     (ino >= EXT2_FIRST_INODE(fs->super))) {
1547                         size_t size = 0;
1548
1549                         pctx.errcode = get_inline_data_ea_size(fs, ino, &size);
1550                         if (!pctx.errcode &&
1551                             fix_problem(ctx, PR_1_INLINE_DATA_FEATURE, &pctx)) {
1552                                 ext2fs_set_feature_inline_data(sb);
1553                                 ext2fs_mark_super_dirty(fs);
1554                                 inlinedata_fs = 1;
1555                         } else if (fix_problem(ctx, PR_1_INLINE_DATA_SET, &pctx)) {
1556                                 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1557                                 /* skip FINISH_INODE_LOOP */
1558                                 continue;
1559                         }
1560                 }
1561
1562                 /* Test for inline data flag but no attr */
1563                 if ((inode->i_flags & EXT4_INLINE_DATA_FL) && inlinedata_fs &&
1564                     (ino >= EXT2_FIRST_INODE(fs->super))) {
1565                         size_t size = 0;
1566                         errcode_t err;
1567                         int flags;
1568
1569                         flags = fs->flags;
1570                         if (failed_csum)
1571                                 fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
1572                         err = get_inline_data_ea_size(fs, ino, &size);
1573                         fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
1574                                     (fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
1575
1576                         switch (err) {
1577                         case 0:
1578                                 /* Everything is awesome... */
1579                                 break;
1580                         case EXT2_ET_BAD_EA_BLOCK_NUM:
1581                         case EXT2_ET_BAD_EA_HASH:
1582                         case EXT2_ET_BAD_EA_HEADER:
1583                         case EXT2_ET_EA_BAD_NAME_LEN:
1584                         case EXT2_ET_EA_BAD_VALUE_SIZE:
1585                         case EXT2_ET_EA_KEY_NOT_FOUND:
1586                         case EXT2_ET_EA_NO_SPACE:
1587                         case EXT2_ET_MISSING_EA_FEATURE:
1588                         case EXT2_ET_INLINE_DATA_CANT_ITERATE:
1589                         case EXT2_ET_INLINE_DATA_NO_BLOCK:
1590                         case EXT2_ET_INLINE_DATA_NO_SPACE:
1591                         case EXT2_ET_NO_INLINE_DATA:
1592                         case EXT2_ET_EXT_ATTR_CSUM_INVALID:
1593                         case EXT2_ET_EA_BAD_VALUE_OFFSET:
1594                         case EXT2_ET_EA_INODE_CORRUPTED:
1595                                 /* broken EA or no system.data EA; truncate */
1596                                 if (fix_problem(ctx, PR_1_INLINE_DATA_NO_ATTR,
1597                                                 &pctx)) {
1598                                         err = ext2fs_inode_size_set(fs, inode, 0);
1599                                         if (err) {
1600                                                 pctx.errcode = err;
1601                                                 ctx->flags |= E2F_FLAG_ABORT;
1602                                                 goto endit;
1603                                         }
1604                                         inode->i_flags &= ~EXT4_INLINE_DATA_FL;
1605                                         memset(&inode->i_block, 0,
1606                                                sizeof(inode->i_block));
1607                                         e2fsck_write_inode(ctx, ino, inode,
1608                                                            "pass1");
1609                                         failed_csum = 0;
1610                                 }
1611                                 break;
1612                         default:
1613                                 /* Some other kind of non-xattr error? */
1614                                 pctx.errcode = err;
1615                                 ctx->flags |= E2F_FLAG_ABORT;
1616                                 goto endit;
1617                         }
1618                 }
1619
1620                 /*
1621                  * Test for incorrect extent flag settings.
1622                  *
1623                  * On big-endian machines we must be careful:
1624                  * When the inode is read, the i_block array is not swapped
1625                  * if the extent flag is set.  Therefore if we are testing
1626                  * for or fixing a wrongly-set flag, we must potentially
1627                  * (un)swap before testing, or after fixing.
1628                  */
1629
1630                 /*
1631                  * In this case the extents flag was set when read, so
1632                  * extent_header_verify is ok.  If the inode is cleared,
1633                  * no need to swap... so no extra swapping here.
1634                  */
1635                 if ((inode->i_flags & EXT4_EXTENTS_FL) && !extent_fs &&
1636                     (inode->i_links_count || (ino == EXT2_BAD_INO) ||
1637                      (ino == EXT2_ROOT_INO) || (ino == EXT2_JOURNAL_INO))) {
1638                         if ((ext2fs_extent_header_verify(inode->i_block,
1639                                                  sizeof(inode->i_block)) == 0) &&
1640                             fix_problem(ctx, PR_1_EXTENT_FEATURE, &pctx)) {
1641                                 ext2fs_set_feature_extents(sb);
1642                                 ext2fs_mark_super_dirty(fs);
1643                                 extent_fs = 1;
1644                         } else if (fix_problem(ctx, PR_1_EXTENTS_SET, &pctx)) {
1645                         clear_inode:
1646                                 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
1647                                 if (ino == EXT2_BAD_INO)
1648                                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map,
1649                                                                  ino);
1650                                 /* skip FINISH_INODE_LOOP */
1651                                 continue;
1652                         }
1653                 }
1654
1655                 /*
1656                  * For big-endian machines:
1657                  * If the inode didn't have the extents flag set when it
1658                  * was read, then the i_blocks array was swapped.  To test
1659                  * as an extents header, we must swap it back first.
1660                  * IF we then set the extents flag, the entire i_block
1661                  * array must be un/re-swapped to make it proper extents data.
1662                  */
1663                 if (extent_fs && !(inode->i_flags & EXT4_EXTENTS_FL) &&
1664                     (inode->i_links_count || (ino == EXT2_BAD_INO) ||
1665                      (ino == EXT2_ROOT_INO) || (ino == EXT2_JOURNAL_INO)) &&
1666                     (LINUX_S_ISREG(inode->i_mode) ||
1667                      LINUX_S_ISDIR(inode->i_mode))) {
1668                         void *ehp;
1669 #ifdef WORDS_BIGENDIAN
1670                         __u32 tmp_block[EXT2_N_BLOCKS];
1671
1672                         for (i = 0; i < EXT2_N_BLOCKS; i++)
1673                                 tmp_block[i] = ext2fs_swab32(inode->i_block[i]);
1674                         ehp = tmp_block;
1675 #else
1676                         ehp = inode->i_block;
1677 #endif
1678                         if ((ext2fs_extent_header_verify(ehp,
1679                                          sizeof(inode->i_block)) == 0) &&
1680                             (fix_problem(ctx, PR_1_UNSET_EXTENT_FL, &pctx))) {
1681                                 inode->i_flags |= EXT4_EXTENTS_FL;
1682 #ifdef WORDS_BIGENDIAN
1683                                 memcpy(inode->i_block, tmp_block,
1684                                        sizeof(inode->i_block));
1685 #endif
1686                                 e2fsck_write_inode(ctx, ino, inode, "pass1");
1687                                 failed_csum = 0;
1688                         }
1689                 }
1690
1691                 if (ino == EXT2_BAD_INO) {
1692                         struct process_block_struct pb;
1693
1694                         if ((failed_csum || inode->i_mode || inode->i_uid ||
1695                              inode->i_gid || inode->i_links_count ||
1696                              (inode->i_flags & EXT4_INLINE_DATA_FL) ||
1697                              inode->i_file_acl) &&
1698                             fix_problem(ctx, PR_1_INVALID_BAD_INODE, &pctx)) {
1699                                 memset(inode, 0, sizeof(struct ext2_inode));
1700                                 e2fsck_write_inode(ctx, ino, inode,
1701                                                    "clear bad inode");
1702                                 failed_csum = 0;
1703                         }
1704
1705                         pctx.errcode = ext2fs_copy_bitmap(ctx->block_found_map,
1706                                                           &pb.fs_meta_blocks);
1707                         if (pctx.errcode) {
1708                                 pctx.num = 4;
1709                                 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
1710                                 ctx->flags |= E2F_FLAG_ABORT;
1711                                 goto endit;
1712                         }
1713                         pb.ino = EXT2_BAD_INO;
1714                         pb.num_blocks = pb.last_block = 0;
1715                         pb.last_db_block = -1;
1716                         pb.num_illegal_blocks = 0;
1717                         pb.suppress = 0; pb.clear = 0; pb.is_dir = 0;
1718                         pb.is_reg = 0; pb.fragmented = 0; pb.bbcheck = 0;
1719                         pb.inode = inode;
1720                         pb.pctx = &pctx;
1721                         pb.ctx = ctx;
1722                         pctx.errcode = ext2fs_block_iterate3(fs, ino, 0,
1723                                      block_buf, process_bad_block, &pb);
1724                         ext2fs_free_block_bitmap(pb.fs_meta_blocks);
1725                         if (pctx.errcode) {
1726                                 fix_problem(ctx, PR_1_BLOCK_ITERATE, &pctx);
1727                                 ctx->flags |= E2F_FLAG_ABORT;
1728                                 goto endit;
1729                         }
1730                         if (pb.bbcheck)
1731                                 if (!fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK_PROMPT, &pctx)) {
1732                                 ctx->flags |= E2F_FLAG_ABORT;
1733                                 goto endit;
1734                         }
1735                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1736                         clear_problem_context(&pctx);
1737                         FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1738                         continue;
1739                 } else if (ino == EXT2_ROOT_INO) {
1740                         /*
1741                          * Make sure the root inode is a directory; if
1742                          * not, offer to clear it.  It will be
1743                          * regenerated in pass #3.
1744                          */
1745                         if (!LINUX_S_ISDIR(inode->i_mode)) {
1746                                 if (fix_problem(ctx, PR_1_ROOT_NO_DIR, &pctx))
1747                                         goto clear_inode;
1748                         }
1749                         /*
1750                          * If dtime is set, offer to clear it.  mke2fs
1751                          * version 0.2b created filesystems with the
1752                          * dtime field set for the root and lost+found
1753                          * directories.  We won't worry about
1754                          * /lost+found, since that can be regenerated
1755                          * easily.  But we will fix the root directory
1756                          * as a special case.
1757                          */
1758                         if (inode->i_dtime && inode->i_links_count) {
1759                                 if (fix_problem(ctx, PR_1_ROOT_DTIME, &pctx)) {
1760                                         inode->i_dtime = 0;
1761                                         e2fsck_write_inode(ctx, ino, inode,
1762                                                            "pass1");
1763                                         failed_csum = 0;
1764                                 }
1765                         }
1766                 } else if (ino == EXT2_JOURNAL_INO) {
1767                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1768                         if (fs->super->s_journal_inum == EXT2_JOURNAL_INO) {
1769                                 if (!LINUX_S_ISREG(inode->i_mode) &&
1770                                     fix_problem(ctx, PR_1_JOURNAL_BAD_MODE,
1771                                                 &pctx)) {
1772                                         inode->i_mode = LINUX_S_IFREG;
1773                                         e2fsck_write_inode(ctx, ino, inode,
1774                                                            "pass1");
1775                                         failed_csum = 0;
1776                                 }
1777                                 check_blocks(ctx, &pctx, block_buf, NULL);
1778                                 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1779                                 continue;
1780                         }
1781                         if ((inode->i_links_count ||
1782                              inode->i_blocks || inode->i_block[0]) &&
1783                             fix_problem(ctx, PR_1_JOURNAL_INODE_NOT_CLEAR,
1784                                         &pctx)) {
1785                                 memset(inode, 0, inode_size);
1786                                 ext2fs_icount_store(ctx->inode_link_info,
1787                                                     ino, 0);
1788                                 e2fsck_write_inode_full(ctx, ino, inode,
1789                                                         inode_size, "pass1");
1790                                 failed_csum = 0;
1791                         }
1792                 } else if (quota_inum_is_reserved(fs, ino)) {
1793                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1794                         if (ext2fs_has_feature_quota(fs->super) &&
1795                             quota_inum_is_super(fs->super, ino)) {
1796                                 if (!LINUX_S_ISREG(inode->i_mode) &&
1797                                     fix_problem(ctx, PR_1_QUOTA_BAD_MODE,
1798                                                         &pctx)) {
1799                                         inode->i_mode = LINUX_S_IFREG;
1800                                         e2fsck_write_inode(ctx, ino, inode,
1801                                                         "pass1");
1802                                         failed_csum = 0;
1803                                 }
1804                                 check_blocks(ctx, &pctx, block_buf, NULL);
1805                                 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1806                                 continue;
1807                         }
1808                         if ((inode->i_links_count ||
1809                              inode->i_blocks || inode->i_block[0]) &&
1810                             fix_problem(ctx, PR_1_QUOTA_INODE_NOT_CLEAR,
1811                                         &pctx)) {
1812                                 memset(inode, 0, inode_size);
1813                                 ext2fs_icount_store(ctx->inode_link_info,
1814                                                     ino, 0);
1815                                 e2fsck_write_inode_full(ctx, ino, inode,
1816                                                         inode_size, "pass1");
1817                                 failed_csum = 0;
1818                         }
1819                 } else if (ino < EXT2_FIRST_INODE(fs->super)) {
1820                         problem_t problem = 0;
1821
1822                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1823                         if (ino == EXT2_BOOT_LOADER_INO) {
1824                                 if (LINUX_S_ISDIR(inode->i_mode))
1825                                         problem = PR_1_RESERVED_BAD_MODE;
1826                         } else if (ino == EXT2_RESIZE_INO) {
1827                                 if (inode->i_mode &&
1828                                     !LINUX_S_ISREG(inode->i_mode))
1829                                         problem = PR_1_RESERVED_BAD_MODE;
1830                         } else {
1831                                 if (inode->i_mode != 0)
1832                                         problem = PR_1_RESERVED_BAD_MODE;
1833                         }
1834                         if (problem) {
1835                                 if (fix_problem(ctx, problem, &pctx)) {
1836                                         inode->i_mode = 0;
1837                                         e2fsck_write_inode(ctx, ino, inode,
1838                                                            "pass1");
1839                                         failed_csum = 0;
1840                                 }
1841                         }
1842                         check_blocks(ctx, &pctx, block_buf, NULL);
1843                         FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1844                         continue;
1845                 }
1846
1847                 if (!inode->i_links_count) {
1848                         FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1849                         continue;
1850                 }
1851                 /*
1852                  * n.b.  0.3c ext2fs code didn't clear i_links_count for
1853                  * deleted files.  Oops.
1854                  *
1855                  * Since all new ext2 implementations get this right,
1856                  * we now assume that the case of non-zero
1857                  * i_links_count and non-zero dtime means that we
1858                  * should keep the file, not delete it.
1859                  *
1860                  */
1861                 if (inode->i_dtime) {
1862                         if (fix_problem(ctx, PR_1_SET_DTIME, &pctx)) {
1863                                 inode->i_dtime = 0;
1864                                 e2fsck_write_inode(ctx, ino, inode, "pass1");
1865                                 failed_csum = 0;
1866                         }
1867                 }
1868
1869                 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1870                 switch (fs->super->s_creator_os) {
1871                     case EXT2_OS_HURD:
1872                         frag = inode->osd2.hurd2.h_i_frag;
1873                         fsize = inode->osd2.hurd2.h_i_fsize;
1874                         break;
1875                     default:
1876                         frag = fsize = 0;
1877                 }
1878
1879                 if (inode->i_faddr || frag || fsize ||
1880                     (!ext2fs_has_feature_largedir(fs->super) &&
1881                     (LINUX_S_ISDIR(inode->i_mode) && inode->i_size_high)))
1882                         mark_inode_bad(ctx, ino);
1883                 if ((fs->super->s_creator_os != EXT2_OS_HURD) &&
1884                     !ext2fs_has_feature_64bit(fs->super) &&
1885                     inode->osd2.linux2.l_i_file_acl_high != 0)
1886                         mark_inode_bad(ctx, ino);
1887                 if ((fs->super->s_creator_os != EXT2_OS_HURD) &&
1888                     !ext2fs_has_feature_huge_file(fs->super) &&
1889                     (inode->osd2.linux2.l_i_blocks_hi != 0))
1890                         mark_inode_bad(ctx, ino);
1891                 if (inode->i_flags & EXT2_IMAGIC_FL) {
1892                         if (imagic_fs) {
1893                                 if (!ctx->inode_imagic_map)
1894                                         alloc_imagic_map(ctx);
1895                                 ext2fs_mark_inode_bitmap2(ctx->inode_imagic_map,
1896                                                          ino);
1897                         } else {
1898                                 if (fix_problem(ctx, PR_1_SET_IMAGIC, &pctx)) {
1899                                         inode->i_flags &= ~EXT2_IMAGIC_FL;
1900                                         e2fsck_write_inode(ctx, ino,
1901                                                            inode, "pass1");
1902                                         failed_csum = 0;
1903                                 }
1904                         }
1905                 }
1906
1907                 check_inode_extra_space(ctx, &pctx, &ea_ibody_quota);
1908                 check_is_really_dir(ctx, &pctx, block_buf);
1909
1910                 /*
1911                  * ext2fs_inode_has_valid_blocks2 does not actually look
1912                  * at i_block[] values, so not endian-sensitive here.
1913                  */
1914                 if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL) &&
1915                     LINUX_S_ISLNK(inode->i_mode) &&
1916                     !ext2fs_inode_has_valid_blocks2(fs, inode) &&
1917                     fix_problem(ctx, PR_1_FAST_SYMLINK_EXTENT_FL, &pctx)) {
1918                         inode->i_flags &= ~EXT4_EXTENTS_FL;
1919                         e2fsck_write_inode(ctx, ino, inode, "pass1");
1920                         failed_csum = 0;
1921                 }
1922
1923                 if ((inode->i_flags & EXT4_ENCRYPT_FL) &&
1924                     add_encrypted_file(ctx, &pctx) < 0)
1925                         goto clear_inode;
1926
1927                 if (casefold_fs && inode->i_flags & EXT4_CASEFOLD_FL)
1928                         ext2fs_mark_inode_bitmap2(ctx->inode_casefold_map, ino);
1929
1930                 if (LINUX_S_ISDIR(inode->i_mode)) {
1931                         ext2fs_mark_inode_bitmap2(ctx->inode_dir_map, ino);
1932                         e2fsck_add_dir_info(ctx, ino, 0);
1933                         ctx->fs_directory_count++;
1934                         if (inode->i_flags & EXT4_CASEFOLD_FL)
1935                                 add_casefolded_dir(ctx, ino);
1936                 } else if (LINUX_S_ISREG (inode->i_mode)) {
1937                         ext2fs_mark_inode_bitmap2(ctx->inode_reg_map, ino);
1938                         ctx->fs_regular_count++;
1939                 } else if (LINUX_S_ISCHR (inode->i_mode) &&
1940                            e2fsck_pass1_check_device_inode(fs, inode)) {
1941                         check_extents_inlinedata(ctx, &pctx);
1942                         check_immutable(ctx, &pctx);
1943                         check_size(ctx, &pctx);
1944                         ctx->fs_chardev_count++;
1945                 } else if (LINUX_S_ISBLK (inode->i_mode) &&
1946                            e2fsck_pass1_check_device_inode(fs, inode)) {
1947                         check_extents_inlinedata(ctx, &pctx);
1948                         check_immutable(ctx, &pctx);
1949                         check_size(ctx, &pctx);
1950                         ctx->fs_blockdev_count++;
1951                 } else if (LINUX_S_ISLNK (inode->i_mode) &&
1952                            e2fsck_pass1_check_symlink(fs, ino, inode,
1953                                                       block_buf)) {
1954                         check_immutable(ctx, &pctx);
1955                         ctx->fs_symlinks_count++;
1956                         if (inode->i_flags & EXT4_INLINE_DATA_FL) {
1957                                 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1958                                 continue;
1959                         } else if (ext2fs_is_fast_symlink(inode)) {
1960                                 ctx->fs_fast_symlinks_count++;
1961                                 check_blocks(ctx, &pctx, block_buf,
1962                                              &ea_ibody_quota);
1963                                 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
1964                                 continue;
1965                         }
1966                 }
1967                 else if (LINUX_S_ISFIFO (inode->i_mode) &&
1968                          e2fsck_pass1_check_device_inode(fs, inode)) {
1969                         check_extents_inlinedata(ctx, &pctx);
1970                         check_immutable(ctx, &pctx);
1971                         check_size(ctx, &pctx);
1972                         ctx->fs_fifo_count++;
1973                 } else if ((LINUX_S_ISSOCK (inode->i_mode)) &&
1974                            e2fsck_pass1_check_device_inode(fs, inode)) {
1975                         check_extents_inlinedata(ctx, &pctx);
1976                         check_immutable(ctx, &pctx);
1977                         check_size(ctx, &pctx);
1978                         ctx->fs_sockets_count++;
1979                 } else
1980                         mark_inode_bad(ctx, ino);
1981                 if (!(inode->i_flags & EXT4_EXTENTS_FL) &&
1982                     !(inode->i_flags & EXT4_INLINE_DATA_FL)) {
1983                         if (inode->i_block[EXT2_IND_BLOCK])
1984                                 ctx->fs_ind_count++;
1985                         if (inode->i_block[EXT2_DIND_BLOCK])
1986                                 ctx->fs_dind_count++;
1987                         if (inode->i_block[EXT2_TIND_BLOCK])
1988                                 ctx->fs_tind_count++;
1989                 }
1990                 if (!(inode->i_flags & EXT4_EXTENTS_FL) &&
1991                     !(inode->i_flags & EXT4_INLINE_DATA_FL) &&
1992                     (inode->i_block[EXT2_IND_BLOCK] ||
1993                      inode->i_block[EXT2_DIND_BLOCK] ||
1994                      inode->i_block[EXT2_TIND_BLOCK] ||
1995                      ext2fs_file_acl_block(fs, inode))) {
1996                         struct process_inode_block *itp;
1997
1998                         itp = &inodes_to_process[process_inode_count];
1999                         itp->ino = ino;
2000                         itp->ea_ibody_quota = ea_ibody_quota;
2001                         if (inode_size < sizeof(struct ext2_inode_large))
2002                                 memcpy(&itp->inode, inode, inode_size);
2003                         else
2004                                 memcpy(&itp->inode, inode, sizeof(itp->inode));
2005                         process_inode_count++;
2006                 } else
2007                         check_blocks(ctx, &pctx, block_buf, &ea_ibody_quota);
2008
2009                 FINISH_INODE_LOOP(ctx, ino, &pctx, failed_csum);
2010
2011                 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
2012                         goto endit;
2013
2014                 if (process_inode_count >= ctx->process_inode_size) {
2015                         process_inodes(ctx, block_buf, inodes_to_process,
2016                                        &process_inode_count);
2017
2018                         if (e2fsck_should_abort(ctx))
2019                                 goto endit;
2020                 }
2021         }
2022         process_inodes(ctx, block_buf, inodes_to_process,
2023                        &process_inode_count);
2024         ext2fs_close_inode_scan(scan);
2025         scan = NULL;
2026
2027         reserve_block_for_root_repair(ctx);
2028         reserve_block_for_lnf_repair(ctx);
2029
2030         /*
2031          * If any extended attribute blocks' reference counts need to
2032          * be adjusted, either up (ctx->refcount_extra), or down
2033          * (ctx->refcount), then fix them.
2034          */
2035         if (ctx->refcount) {
2036                 adjust_extattr_refcount(ctx, ctx->refcount, block_buf, -1);
2037                 ea_refcount_free(ctx->refcount);
2038                 ctx->refcount = 0;
2039         }
2040         if (ctx->refcount_extra) {
2041                 adjust_extattr_refcount(ctx, ctx->refcount_extra,
2042                                         block_buf, +1);
2043                 ea_refcount_free(ctx->refcount_extra);
2044                 ctx->refcount_extra = 0;
2045         }
2046
2047         if (ctx->ea_block_quota_blocks) {
2048                 ea_refcount_free(ctx->ea_block_quota_blocks);
2049                 ctx->ea_block_quota_blocks = 0;
2050         }
2051
2052         if (ctx->ea_block_quota_inodes) {
2053                 ea_refcount_free(ctx->ea_block_quota_inodes);
2054                 ctx->ea_block_quota_inodes = 0;
2055         }
2056
2057         if (ctx->invalid_bitmaps)
2058                 handle_fs_bad_blocks(ctx);
2059
2060         /* We don't need the block_ea_map any more */
2061         if (ctx->block_ea_map) {
2062                 ext2fs_free_block_bitmap(ctx->block_ea_map);
2063                 ctx->block_ea_map = 0;
2064         }
2065
2066         /* We don't need the encryption policy => ID map any more */
2067         destroy_encryption_policy_map(ctx);
2068
2069         if (ctx->flags & E2F_FLAG_RESIZE_INODE) {
2070                 clear_problem_context(&pctx);
2071                 pctx.errcode = ext2fs_create_resize_inode(fs);
2072                 if (pctx.errcode) {
2073                         if (!fix_problem(ctx, PR_1_RESIZE_INODE_CREATE,
2074                                          &pctx)) {
2075                                 ctx->flags |= E2F_FLAG_ABORT;
2076                                 goto endit;
2077                         }
2078                         pctx.errcode = 0;
2079                 }
2080                 if (!pctx.errcode) {
2081                         e2fsck_read_inode(ctx, EXT2_RESIZE_INO, inode,
2082                                           "recreate inode");
2083                         inode->i_mtime = ctx->now;
2084                         e2fsck_write_inode(ctx, EXT2_RESIZE_INO, inode,
2085                                            "recreate inode");
2086                 }
2087                 ctx->flags &= ~E2F_FLAG_RESIZE_INODE;
2088         }
2089
2090         if (ctx->flags & E2F_FLAG_RESTART) {
2091                 /*
2092                  * Only the master copy of the superblock and block
2093                  * group descriptors are going to be written during a
2094                  * restart, so set the superblock to be used to be the
2095                  * master superblock.
2096                  */
2097                 ctx->use_superblock = 0;
2098                 goto endit;
2099         }
2100
2101         if (ctx->large_dirs && !ext2fs_has_feature_largedir(fs->super)) {
2102                 if (fix_problem(ctx, PR_2_FEATURE_LARGE_DIRS, &pctx)) {
2103                         ext2fs_set_feature_largedir(fs->super);
2104                         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
2105                         ext2fs_mark_super_dirty(fs);
2106                 }
2107                 if (fs->super->s_rev_level == EXT2_GOOD_OLD_REV &&
2108                     fix_problem(ctx, PR_1_FS_REV_LEVEL, &pctx)) {
2109                         ext2fs_update_dynamic_rev(fs);
2110                         ext2fs_mark_super_dirty(fs);
2111                 }
2112         }
2113
2114         if (ctx->block_dup_map) {
2115                 if (ctx->options & E2F_OPT_PREEN) {
2116                         clear_problem_context(&pctx);
2117                         fix_problem(ctx, PR_1_DUP_BLOCKS_PREENSTOP, &pctx);
2118                 }
2119                 e2fsck_pass1_dupblocks(ctx, block_buf);
2120         }
2121         ctx->flags |= E2F_FLAG_ALLOC_OK;
2122 endit:
2123         e2fsck_use_inode_shortcuts(ctx, 0);
2124         ext2fs_free_mem(&inodes_to_process);
2125         inodes_to_process = 0;
2126
2127         if (scan)
2128                 ext2fs_close_inode_scan(scan);
2129         if (block_buf)
2130                 ext2fs_free_mem(&block_buf);
2131         if (inode)
2132                 ext2fs_free_mem(&inode);
2133
2134         /*
2135          * The l+f inode may have been cleared, so zap it now and
2136          * later passes will recalculate it if necessary
2137          */
2138         ctx->lost_and_found = 0;
2139
2140         if ((ctx->flags & E2F_FLAG_SIGNAL_MASK) == 0)
2141                 print_resource_track(ctx, _("Pass 1"), &rtrack, ctx->fs->io);
2142         else
2143                 ctx->invalid_bitmaps++;
2144 }
2145
2146 static void init_ext2_max_sizes()
2147 {
2148         int     i;
2149         __u64   max_sizes;
2150
2151         /*
2152          * Init ext2_max_sizes which will be immutable and shared between
2153          * threads
2154          */
2155 #define EXT2_BPP(bits) (1ULL << ((bits) - 2))
2156
2157         for (i = EXT2_MIN_BLOCK_LOG_SIZE; i <= EXT2_MAX_BLOCK_LOG_SIZE; i++) {
2158                 max_sizes = EXT2_NDIR_BLOCKS + EXT2_BPP(i);
2159                 max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i);
2160                 max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i) * EXT2_BPP(i);
2161                 max_sizes = (max_sizes * (1UL << i));
2162                 ext2_max_sizes[i - EXT2_MIN_BLOCK_LOG_SIZE] = max_sizes;
2163         }
2164 #undef EXT2_BPP
2165 }
2166
2167 #ifdef HAVE_PTHREAD
2168 static errcode_t e2fsck_pass1_copy_bitmap(ext2_filsys fs, ext2fs_generic_bitmap *src,
2169                                           ext2fs_generic_bitmap *dest)
2170 {
2171         errcode_t ret;
2172
2173         ret = ext2fs_copy_bitmap(*src, dest);
2174         if (ret)
2175                 return ret;
2176
2177         (*dest)->fs = fs;
2178
2179         return 0;
2180 }
2181
2182 static void e2fsck_pass1_free_bitmap(ext2fs_generic_bitmap *bitmap)
2183 {
2184         if (*bitmap) {
2185                 ext2fs_free_generic_bmap(*bitmap);
2186                 *bitmap = NULL;
2187         }
2188
2189 }
2190
2191 static errcode_t e2fsck_pass1_merge_bitmap(ext2_filsys fs, ext2fs_generic_bitmap *src,
2192                                           ext2fs_generic_bitmap *dest)
2193 {
2194         errcode_t ret = 0;
2195
2196         if (*src) {
2197                 if (*dest == NULL) {
2198                         *dest = *src;
2199                         *src = NULL;
2200                 } else {
2201                         ret = ext2fs_merge_bitmap(*src, *dest, NULL, NULL);
2202                         if (ret)
2203                                 return ret;
2204                 }
2205                 (*dest)->fs = fs;
2206         }
2207
2208         return 0;
2209 }
2210
2211 static errcode_t e2fsck_pass1_copy_fs(ext2_filsys dest, e2fsck_t src_context,
2212                                       ext2_filsys src)
2213 {
2214         errcode_t       retval;
2215
2216         memcpy(dest, src, sizeof(struct struct_ext2_filsys));
2217         dest->inode_map = NULL;
2218         dest->block_map = NULL;
2219         if (dest->dblist)
2220                 dest->dblist->fs = dest;
2221         if (src->block_map) {
2222                 retval = e2fsck_pass1_copy_bitmap(dest, &src->block_map,
2223                                                   &dest->block_map);
2224                 if (retval)
2225                         return retval;
2226         }
2227         if (src->inode_map) {
2228                 retval = e2fsck_pass1_copy_bitmap(dest, &src->inode_map,
2229                                                   &dest->inode_map);
2230                 if (retval)
2231                         return retval;
2232         }
2233
2234         if (src->badblocks) {
2235                 retval = ext2fs_badblocks_copy(src->badblocks, &dest->badblocks);
2236                 if (retval)
2237                         return retval;
2238         }
2239
2240         /* disable it for now */
2241         src_context->openfs_flags &= ~EXT2_FLAG_EXCLUSIVE;
2242         retval = ext2fs_open_channel(dest, src_context->io_options,
2243                                      src_context->io_manager,
2244                                      src_context->openfs_flags,
2245                                      src->io->block_size);
2246         if (retval)
2247                 return retval;
2248
2249         /* Block size might not be default */
2250         io_channel_set_blksize(dest->io, src->io->block_size);
2251         ehandler_init(dest->io);
2252
2253         assert(dest->io->magic == src->io->magic);
2254         assert(dest->io->manager == src->io->manager);
2255         assert(strcmp(dest->io->name, src->io->name) == 0);
2256         assert(dest->io->block_size == src->io->block_size);
2257         assert(dest->io->read_error == src->io->read_error);
2258         assert(dest->io->write_error == src->io->write_error);
2259         assert(dest->io->refcount == src->io->refcount);
2260         assert(dest->io->flags == src->io->flags);
2261         assert(dest->io->app_data == dest);
2262         assert(src->io->app_data == src);
2263         assert(dest->io->align == src->io->align);
2264
2265         /* The data should be written to disk immediately */
2266         dest->io->flags |= CHANNEL_FLAGS_WRITETHROUGH;
2267         /* icache will be rebuilt if needed, so do not copy from @src */
2268         src->icache = NULL;
2269         return 0;
2270 }
2271
2272 static int e2fsck_pass1_merge_fs(ext2_filsys dest, ext2_filsys src)
2273 {
2274         struct ext2_inode_cache *icache = dest->icache;
2275         errcode_t retval = 0;
2276         io_channel dest_io;
2277         io_channel dest_image_io;
2278         ext2fs_inode_bitmap inode_map;
2279         ext2fs_block_bitmap block_map;
2280
2281         dest_io = dest->io;
2282         dest_image_io = dest->image_io;
2283         inode_map = dest->inode_map;
2284         block_map = dest->block_map;
2285
2286         memcpy(dest, src, sizeof(struct struct_ext2_filsys));
2287         dest->io = dest_io;
2288         dest->image_io = dest_image_io;
2289         dest->icache = icache;
2290         dest->inode_map = inode_map;
2291         dest->block_map = block_map;
2292         if (dest->dblist)
2293                 dest->dblist->fs = dest;
2294
2295         if (src->icache) {
2296                 ext2fs_free_inode_cache(src->icache);
2297                 src->icache = NULL;
2298         }
2299
2300         retval = e2fsck_pass1_merge_bitmap(dest, &src->inode_map,
2301                                            &dest->inode_map);
2302         if (retval)
2303                 goto out;
2304
2305         retval = e2fsck_pass1_merge_bitmap(dest, &src->block_map,
2306                                           &dest->block_map);
2307         if (retval)
2308                 goto out;
2309
2310         if (src->badblocks) {
2311                 retval = ext2fs_badblocks_copy(src->badblocks, &dest->badblocks);
2312
2313                 ext2fs_badblocks_list_free(src->badblocks);
2314                 src->badblocks = NULL;
2315         }
2316 out:
2317         io_channel_close(src->io);
2318         if (src->inode_map)
2319                 ext2fs_free_generic_bmap(src->inode_map);
2320         if (src->block_map)
2321                 ext2fs_free_generic_bmap(src->block_map);
2322         return retval;
2323 }
2324
2325 static errcode_t e2fsck_pass1_thread_prepare(e2fsck_t global_ctx, e2fsck_t *thread_ctx,
2326                                              int thread_index, int num_threads)
2327 {
2328         errcode_t               retval;
2329         e2fsck_t                thread_context;
2330         ext2_filsys             thread_fs;
2331         ext2_filsys             global_fs = global_ctx->fs;
2332         struct e2fsck_thread    *tinfo;
2333         dgrp_t                  average_group;
2334
2335         assert(global_ctx->inode_used_map == NULL);
2336         assert(global_ctx->inode_dir_map == NULL);
2337         assert(global_ctx->inode_bb_map == NULL);
2338         assert(global_ctx->inode_imagic_map == NULL);
2339         assert(global_ctx->inode_reg_map == NULL);
2340         assert(global_ctx->inodes_to_rebuild == NULL);
2341
2342         assert(global_ctx->block_found_map == NULL);
2343         assert(global_ctx->block_dup_map == NULL);
2344         assert(global_ctx->block_ea_map == NULL);
2345         assert(global_ctx->block_metadata_map == NULL);
2346         assert(global_ctx->fs->dblist == NULL);
2347
2348         retval = ext2fs_get_mem(sizeof(struct e2fsck_struct), &thread_context);
2349         if (retval) {
2350                 com_err(global_ctx->program_name, retval, "while allocating memory");
2351                 return retval;
2352         }
2353         memcpy(thread_context, global_ctx, sizeof(struct e2fsck_struct));
2354         thread_context->global_ctx = global_ctx;
2355
2356         retval = ext2fs_get_mem(sizeof(struct struct_ext2_filsys), &thread_fs);
2357         if (retval) {
2358                 com_err(global_ctx->program_name, retval, "while allocating memory");
2359                 goto out_context;
2360         }
2361
2362         io_channel_flush_cleanup(global_fs->io);
2363         retval = e2fsck_pass1_copy_fs(thread_fs, global_ctx, global_fs);
2364         if (retval) {
2365                 com_err(global_ctx->program_name, retval, "while copying fs");
2366                 goto out_fs;
2367         }
2368         thread_fs->priv_data = thread_context;
2369
2370         thread_context->thread_info.et_thread_index = thread_index;
2371         set_up_logging(thread_context);
2372
2373         /*
2374          * Distribute work to multiple threads:
2375          * Each thread work on fs->group_desc_count / nthread groups.
2376          */
2377         tinfo = &thread_context->thread_info;
2378         average_group = thread_fs->group_desc_count / num_threads;
2379         if (average_group == 0)
2380                 average_group = 1;
2381         tinfo->et_group_start = average_group * thread_index;
2382         if (thread_index == num_threads - 1)
2383                 tinfo->et_group_end = thread_fs->group_desc_count;
2384         else
2385                 tinfo->et_group_end = average_group * (thread_index + 1);
2386         tinfo->et_group_next = tinfo->et_group_start;
2387         tinfo->et_inode_number = 0;
2388         tinfo->et_log_buf[0] = '\0';
2389         tinfo->et_log_length = 0;
2390         if (thread_context->options & E2F_OPT_MULTITHREAD)
2391                 log_out(thread_context, _("Scan group range [%d, %d)\n"),
2392                         tinfo->et_group_start, tinfo->et_group_end);
2393         thread_context->fs = thread_fs;
2394         *thread_ctx = thread_context;
2395         return 0;
2396 out_fs:
2397         ext2fs_free_mem(&thread_fs);
2398 out_context:
2399         ext2fs_free_mem(&thread_context);
2400         return retval;
2401 }
2402
2403 static int e2fsck_pass1_thread_join_one(e2fsck_t global_ctx, e2fsck_t thread_ctx)
2404 {
2405         errcode_t        retval;
2406         int              flags = global_ctx->flags;
2407         ext2_filsys      thread_fs = thread_ctx->fs;
2408         ext2_filsys      global_fs = global_ctx->fs;
2409         FILE            *global_logf = global_ctx->logf;
2410         FILE            *global_problem_logf = global_ctx->problem_logf;
2411         ext2fs_inode_bitmap inode_bad_map = global_ctx->inode_bad_map;
2412         ext2fs_inode_bitmap inode_used_map = global_ctx->inode_used_map;
2413         ext2fs_inode_bitmap inode_dir_map = global_ctx->inode_dir_map;
2414         ext2fs_inode_bitmap inode_bb_map = global_ctx->inode_bb_map;
2415         ext2fs_inode_bitmap inode_imagic_map = global_ctx->inode_imagic_map;
2416         ext2fs_inode_bitmap inode_reg_map = global_ctx->inode_reg_map;
2417         ext2fs_block_bitmap block_found_map = global_ctx->block_found_map;
2418         ext2fs_block_bitmap block_dup_map = global_ctx->block_dup_map;
2419         ext2fs_block_bitmap block_ea_map = global_ctx->block_ea_map;
2420         ext2fs_block_bitmap block_metadata_map = global_ctx->block_metadata_map;
2421         ext2fs_block_bitmap inodes_to_rebuild = global_ctx->inodes_to_rebuild;
2422
2423 #ifdef HAVE_SETJMP_H
2424         jmp_buf          old_jmp;
2425
2426         memcpy(old_jmp, global_ctx->abort_loc, sizeof(jmp_buf));
2427 #endif
2428         memcpy(global_ctx, thread_ctx, sizeof(struct e2fsck_struct));
2429 #ifdef HAVE_SETJMP_H
2430         memcpy(global_ctx->abort_loc, old_jmp, sizeof(jmp_buf));
2431 #endif
2432
2433         global_ctx->inode_used_map = inode_used_map;
2434         global_ctx->inode_bad_map = inode_bad_map;
2435         global_ctx->inode_dir_map = inode_dir_map;
2436         global_ctx->inode_bb_map = inode_bb_map;
2437         global_ctx->inode_imagic_map = inode_imagic_map;
2438         global_ctx->inodes_to_rebuild = inodes_to_rebuild;
2439         global_ctx->inode_reg_map = inode_reg_map;
2440         global_ctx->block_found_map = block_found_map;
2441         global_ctx->block_dup_map = block_dup_map;
2442         global_ctx->block_ea_map = block_ea_map;
2443         global_ctx->block_metadata_map = block_metadata_map;
2444
2445         /* Keep the global singal flags*/
2446         global_ctx->flags |= (flags & E2F_FLAG_SIGNAL_MASK) |
2447                              (global_ctx->flags & E2F_FLAG_SIGNAL_MASK);
2448
2449         retval = e2fsck_pass1_merge_fs(global_fs, thread_fs);
2450         if (retval) {
2451                 com_err(global_ctx->program_name, 0, _("while merging fs\n"));
2452                 return retval;
2453         }
2454         global_fs->priv_data = global_ctx;
2455         global_ctx->fs = global_fs;
2456         global_ctx->logf = global_logf;
2457         global_ctx->problem_logf = global_problem_logf;
2458         global_ctx->global_ctx = NULL;
2459
2460         retval = e2fsck_pass1_merge_bitmap(global_fs,
2461                                 &thread_ctx->inode_used_map,
2462                                 &global_ctx->inode_used_map);
2463         if (retval)
2464                 return retval;
2465
2466         retval = e2fsck_pass1_merge_bitmap(global_fs,
2467                                 &thread_ctx->inode_bad_map,
2468                                 &global_ctx->inode_bad_map);
2469         if (retval)
2470                 return retval;
2471         retval = e2fsck_pass1_merge_bitmap(global_fs,
2472                                         &thread_ctx->inode_dir_map,
2473                                         &global_ctx->inode_dir_map);
2474         if (retval)
2475                 return retval;
2476         retval = e2fsck_pass1_merge_bitmap(global_fs,
2477                                 &thread_ctx->inode_bb_map,
2478                                 &global_ctx->inode_bb_map);
2479         if (retval)
2480                 return retval;
2481         retval = e2fsck_pass1_merge_bitmap(global_fs,
2482                                 &thread_ctx->inode_imagic_map,
2483                                 &global_ctx->inode_imagic_map);
2484         if (retval)
2485                 return retval;
2486         retval = e2fsck_pass1_merge_bitmap(global_fs,
2487                                 &thread_ctx->inode_reg_map,
2488                                 &global_ctx->inode_reg_map);
2489         if (retval)
2490                 return retval;
2491         retval = e2fsck_pass1_merge_bitmap(global_fs,
2492                                 &thread_ctx->inodes_to_rebuild,
2493                                 &global_ctx->inodes_to_rebuild);
2494         if (retval)
2495                 return retval;
2496         retval = e2fsck_pass1_merge_bitmap(global_fs,
2497                                 &thread_ctx->block_found_map,
2498                                 &global_ctx->block_found_map);
2499         if (retval)
2500                 return retval;
2501         retval = e2fsck_pass1_merge_bitmap(global_fs,
2502                                 &thread_ctx->block_dup_map,
2503                                 &global_ctx->block_dup_map);
2504         if (retval)
2505                 return retval;
2506         retval = e2fsck_pass1_merge_bitmap(global_fs,
2507                                 &thread_ctx->block_ea_map,
2508                                 &global_ctx->block_ea_map);
2509         if (retval)
2510                 return retval;
2511         retval = e2fsck_pass1_merge_bitmap(global_fs,
2512                                 &thread_ctx->block_metadata_map,
2513                                 &global_ctx->block_metadata_map);
2514         if (retval)
2515                 return retval;
2516
2517         return 0;
2518 }
2519
2520 static int e2fsck_pass1_thread_join(e2fsck_t global_ctx, e2fsck_t thread_ctx)
2521 {
2522         errcode_t       retval;
2523
2524         retval = e2fsck_pass1_thread_join_one(global_ctx, thread_ctx);
2525         ext2fs_free_mem(&thread_ctx->fs);
2526         if (thread_ctx->logf)
2527                 fclose(thread_ctx->logf);
2528         if (thread_ctx->problem_logf) {
2529                 fputs("</problem_log>\n", thread_ctx->problem_logf);
2530                 fclose(thread_ctx->problem_logf);
2531         }
2532         e2fsck_pass1_free_bitmap(&thread_ctx->inode_used_map);
2533         e2fsck_pass1_free_bitmap(&thread_ctx->inode_bad_map);
2534         e2fsck_pass1_free_bitmap(&thread_ctx->inode_dir_map);
2535         e2fsck_pass1_free_bitmap(&thread_ctx->inode_bb_map);
2536         e2fsck_pass1_free_bitmap(&thread_ctx->inode_imagic_map);
2537         e2fsck_pass1_free_bitmap(&thread_ctx->inode_reg_map);
2538         e2fsck_pass1_free_bitmap(&thread_ctx->inodes_to_rebuild);
2539         e2fsck_pass1_free_bitmap(&thread_ctx->block_found_map);
2540         e2fsck_pass1_free_bitmap(&thread_ctx->block_dup_map);
2541         e2fsck_pass1_free_bitmap(&thread_ctx->block_ea_map);
2542         e2fsck_pass1_free_bitmap(&thread_ctx->block_metadata_map);
2543         ext2fs_free_mem(&thread_ctx);
2544
2545         return retval;
2546 }
2547
2548 static int e2fsck_pass1_threads_join(struct e2fsck_thread_info *infos,
2549                                       int num_threads, e2fsck_t global_ctx)
2550 {
2551         errcode_t                        rc;
2552         errcode_t                        ret = 0;
2553         int                              i;
2554         struct e2fsck_thread_info       *pinfo;
2555
2556         for (i = 0; i < num_threads; i++) {
2557                 pinfo = &infos[i];
2558
2559                 if (!pinfo->eti_started)
2560                         continue;
2561
2562                 rc = pthread_join(pinfo->eti_thread_id, NULL);
2563                 if (rc) {
2564                         com_err(global_ctx->program_name, rc,
2565                                 _("while joining thread\n"));
2566                         if (ret == 0)
2567                                 ret = rc;
2568                 }
2569                 rc = e2fsck_pass1_thread_join(global_ctx, infos[i].eti_thread_ctx);
2570                 if (rc) {
2571                         com_err(global_ctx->program_name, rc,
2572                                 _("while joining pass1 thread\n"));
2573                         if (ret == 0)
2574                                 ret = rc;
2575                 }
2576         }
2577         free(infos);
2578
2579         return ret;
2580 }
2581
2582 static void *e2fsck_pass1_thread(void *arg)
2583 {
2584         struct e2fsck_thread_info       *info = arg;
2585         e2fsck_t                         thread_ctx = info->eti_thread_ctx;
2586
2587 #ifdef HAVE_SETJMP_H
2588         /*
2589          * When fatal_error() happens, jump to here. The thread
2590          * context's flags will be saved, but its abort_loc will
2591          * be overwritten by original jump buffer for the later
2592          * tests.
2593          */
2594         if (setjmp(thread_ctx->abort_loc)) {
2595                 thread_ctx->flags &= ~E2F_FLAG_SETJMP_OK;
2596                 goto out;
2597         }
2598         thread_ctx->flags |= E2F_FLAG_SETJMP_OK;
2599 #endif
2600
2601         e2fsck_pass1_run(thread_ctx);
2602
2603 out:
2604         if (thread_ctx->options & E2F_OPT_MULTITHREAD)
2605                 log_out(thread_ctx,
2606                         _("Scanned group range [%lu, %lu), inodes %lu\n"),
2607                         thread_ctx->thread_info.et_group_start,
2608                         thread_ctx->thread_info.et_group_end,
2609                         thread_ctx->thread_info.et_inode_number);
2610         return NULL;
2611 }
2612
2613 static int e2fsck_pass1_threads_start(struct e2fsck_thread_info **pinfo,
2614                                       int num_threads, e2fsck_t global_ctx)
2615 {
2616         struct e2fsck_thread_info       *infos;
2617         pthread_attr_t                   attr;
2618         errcode_t                        retval;
2619         errcode_t                        ret;
2620         struct e2fsck_thread_info       *tmp_pinfo;
2621         int                              i;
2622         e2fsck_t                         thread_ctx;
2623
2624         retval = pthread_attr_init(&attr);
2625         if (retval) {
2626                 com_err(global_ctx->program_name, retval,
2627                         _("while setting pthread attribute\n"));
2628                 return retval;
2629         }
2630
2631         infos = calloc(num_threads, sizeof(struct e2fsck_thread_info));
2632         if (infos == NULL) {
2633                 retval = -ENOMEM;
2634                 com_err(global_ctx->program_name, retval,
2635                         _("while allocating memory for threads\n"));
2636                 pthread_attr_destroy(&attr);
2637                 return retval;
2638         }
2639
2640         for (i = 0; i < num_threads; i++) {
2641                 tmp_pinfo = &infos[i];
2642                 tmp_pinfo->eti_thread_index = i;
2643                 retval = e2fsck_pass1_thread_prepare(global_ctx, &thread_ctx,
2644                                                      i, num_threads);
2645                 if (retval) {
2646                         com_err(global_ctx->program_name, retval,
2647                                 _("while preparing pass1 thread\n"));
2648                         break;
2649                 }
2650                 tmp_pinfo->eti_thread_ctx = thread_ctx;
2651
2652                 retval = pthread_create(&tmp_pinfo->eti_thread_id, &attr,
2653                                         &e2fsck_pass1_thread, tmp_pinfo);
2654                 if (retval) {
2655                         com_err(global_ctx->program_name, retval,
2656                                 _("while creating thread\n"));
2657                         e2fsck_pass1_thread_join(global_ctx, thread_ctx);
2658                         break;
2659                 }
2660
2661                 tmp_pinfo->eti_started = 1;
2662         }
2663
2664         /* destroy the thread attribute object, since it is no longer needed */
2665         ret = pthread_attr_destroy(&attr);
2666         if (ret) {
2667                 com_err(global_ctx->program_name, ret,
2668                         _("while destroying thread attribute\n"));
2669                 if (retval == 0)
2670                         retval = ret;
2671         }
2672
2673         if (retval) {
2674                 e2fsck_pass1_threads_join(infos, num_threads, global_ctx);
2675                 return retval;
2676         }
2677         *pinfo = infos;
2678         return 0;
2679 }
2680
2681 static void e2fsck_pass1_multithread(e2fsck_t global_ctx)
2682 {
2683         struct e2fsck_thread_info       *infos = NULL;
2684         int                              num_threads = 1;
2685         errcode_t                        retval;
2686
2687         retval = e2fsck_pass1_threads_start(&infos, num_threads, global_ctx);
2688         if (retval) {
2689                 com_err(global_ctx->program_name, retval,
2690                         _("while starting pass1 threads\n"));
2691                 goto out_abort;
2692         }
2693
2694         retval = e2fsck_pass1_threads_join(infos, num_threads, global_ctx);
2695         if (retval) {
2696                 com_err(global_ctx->program_name, retval,
2697                         _("while joining pass1 threads\n"));
2698                 goto out_abort;
2699         }
2700         return;
2701 out_abort:
2702         global_ctx->flags |= E2F_FLAG_ABORT;
2703         return;
2704 }
2705 #endif
2706
2707 void e2fsck_pass1(e2fsck_t ctx)
2708 {
2709
2710         init_ext2_max_sizes();
2711 #ifdef HAVE_PTHREAD
2712         e2fsck_pass1_multithread(ctx);
2713 #else
2714         e2fsck_pass1_run(ctx);
2715 #endif
2716 }
2717
2718 #undef FINISH_INODE_LOOP
2719
2720 /*
2721  * When the inode_scan routines call this callback at the end of the
2722  * glock group, call process_inodes.
2723  */
2724 static errcode_t scan_callback(ext2_filsys fs,
2725                                ext2_inode_scan scan EXT2FS_ATTR((unused)),
2726                                dgrp_t group, void * priv_data)
2727 {
2728         struct scan_callback_struct *scan_struct;
2729         e2fsck_t ctx;
2730         struct e2fsck_thread *tinfo;
2731
2732         scan_struct = (struct scan_callback_struct *) priv_data;
2733         ctx = scan_struct->ctx;
2734
2735         process_inodes((e2fsck_t) fs->priv_data, scan_struct->block_buf,
2736                        scan_struct->inodes_to_process,
2737                        scan_struct->process_inode_count);
2738
2739         if (ctx->progress)
2740                 if ((ctx->progress)(ctx, 1, group+1,
2741                                     ctx->fs->group_desc_count))
2742                         return EXT2_ET_CANCEL_REQUESTED;
2743
2744 #ifdef HAVE_PTHREAD
2745         if (ctx->global_ctx) {
2746                 tinfo = &ctx->thread_info;
2747                 tinfo->et_group_next++;
2748                 if (ctx->options & E2F_OPT_DEBUG &&
2749                     ctx->options & E2F_OPT_MULTITHREAD)
2750                         log_out(ctx, _("group %d finished\n"),
2751                                 tinfo->et_group_next);
2752                 if (tinfo->et_group_next >= tinfo->et_group_end)
2753                         return EXT2_ET_SCAN_FINISHED;
2754         }
2755 #endif
2756
2757         return 0;
2758 }
2759
2760 /*
2761  * Process the inodes in the "inodes to process" list.
2762  */
2763 static void process_inodes(e2fsck_t ctx, char *block_buf,
2764                            struct process_inode_block *inodes_to_process,
2765                            int *process_inode_count)
2766 {
2767         int                     i;
2768         struct ext2_inode       *old_stashed_inode;
2769         ext2_ino_t              old_stashed_ino;
2770         const char              *old_operation;
2771         char                    buf[80];
2772         struct problem_context  pctx;
2773
2774 #if 0
2775         printf("begin process_inodes: ");
2776 #endif
2777         if (*process_inode_count == 0)
2778                 return;
2779         old_operation = ehandler_operation(0);
2780         old_stashed_inode = ctx->stashed_inode;
2781         old_stashed_ino = ctx->stashed_ino;
2782         qsort(inodes_to_process, *process_inode_count,
2783                       sizeof(struct process_inode_block), process_inode_cmp);
2784         clear_problem_context(&pctx);
2785         for (i=0; i < *process_inode_count; i++) {
2786                 pctx.inode = ctx->stashed_inode =
2787                         (struct ext2_inode *) &inodes_to_process[i].inode;
2788                 pctx.ino = ctx->stashed_ino = inodes_to_process[i].ino;
2789
2790 #if 0
2791                 printf("%u ", pctx.ino);
2792 #endif
2793                 sprintf(buf, _("reading indirect blocks of inode %u"),
2794                         pctx.ino);
2795                 ehandler_operation(buf);
2796                 check_blocks(ctx, &pctx, block_buf,
2797                              &inodes_to_process[i].ea_ibody_quota);
2798                 if (e2fsck_should_abort(ctx))
2799                         break;
2800         }
2801         ctx->stashed_inode = old_stashed_inode;
2802         ctx->stashed_ino = old_stashed_ino;
2803         *process_inode_count = 0;
2804 #if 0
2805         printf("end process inodes\n");
2806 #endif
2807         ehandler_operation(old_operation);
2808 }
2809
2810 static EXT2_QSORT_TYPE process_inode_cmp(const void *a, const void *b)
2811 {
2812         const struct process_inode_block *ib_a =
2813                 (const struct process_inode_block *) a;
2814         const struct process_inode_block *ib_b =
2815                 (const struct process_inode_block *) b;
2816         int     ret;
2817
2818         ret = (ib_a->inode.i_block[EXT2_IND_BLOCK] -
2819                ib_b->inode.i_block[EXT2_IND_BLOCK]);
2820         if (ret == 0)
2821                 /*
2822                  * We only call process_inodes() for non-extent
2823                  * inodes, so it's OK to pass NULL to
2824                  * ext2fs_file_acl_block() here.
2825                  */
2826                 ret = ext2fs_file_acl_block(0, ext2fs_const_inode(&ib_a->inode)) -
2827                         ext2fs_file_acl_block(0, ext2fs_const_inode(&ib_b->inode));
2828         if (ret == 0)
2829                 ret = ib_a->ino - ib_b->ino;
2830         return ret;
2831 }
2832
2833 /*
2834  * Mark an inode as being bad in some what
2835  */
2836 static void mark_inode_bad(e2fsck_t ctx, ino_t ino)
2837 {
2838         struct          problem_context pctx;
2839
2840         if (!ctx->inode_bad_map) {
2841                 clear_problem_context(&pctx);
2842
2843                 pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
2844                                 _("bad inode map"), EXT2FS_BMAP64_RBTREE,
2845                                 "inode_bad_map", &ctx->inode_bad_map);
2846                 if (pctx.errcode) {
2847                         pctx.num = 3;
2848                         fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
2849                         /* Should never get here */
2850                         ctx->flags |= E2F_FLAG_ABORT;
2851                         return;
2852                 }
2853         }
2854         ext2fs_mark_inode_bitmap2(ctx->inode_bad_map, ino);
2855 }
2856
2857 static void add_casefolded_dir(e2fsck_t ctx, ino_t ino)
2858 {
2859         struct          problem_context pctx;
2860
2861         if (!ctx->casefolded_dirs) {
2862                 pctx.errcode = ext2fs_u32_list_create(&ctx->casefolded_dirs, 0);
2863                 if (pctx.errcode)
2864                         goto error;
2865         }
2866         pctx.errcode = ext2fs_u32_list_add(ctx->casefolded_dirs, ino);
2867         if (pctx.errcode == 0)
2868                 return;
2869 error:
2870         fix_problem(ctx, PR_1_ALLOCATE_CASEFOLDED_DIRLIST, &pctx);
2871         /* Should never get here */
2872         ctx->flags |= E2F_FLAG_ABORT;
2873 }
2874
2875 /*
2876  * This procedure will allocate the inode "bb" (badblock) map table
2877  */
2878 static void alloc_bb_map(e2fsck_t ctx)
2879 {
2880         struct          problem_context pctx;
2881
2882         clear_problem_context(&pctx);
2883         pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
2884                         _("inode in bad block map"), EXT2FS_BMAP64_RBTREE,
2885                         "inode_bb_map", &ctx->inode_bb_map);
2886         if (pctx.errcode) {
2887                 pctx.num = 4;
2888                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
2889                 /* Should never get here */
2890                 ctx->flags |= E2F_FLAG_ABORT;
2891                 return;
2892         }
2893 }
2894
2895 /*
2896  * This procedure will allocate the inode imagic table
2897  */
2898 static void alloc_imagic_map(e2fsck_t ctx)
2899 {
2900         struct          problem_context pctx;
2901
2902         clear_problem_context(&pctx);
2903         pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
2904                         _("imagic inode map"), EXT2FS_BMAP64_RBTREE,
2905                         "inode_imagic_map", &ctx->inode_imagic_map);
2906         if (pctx.errcode) {
2907                 pctx.num = 5;
2908                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
2909                 /* Should never get here */
2910                 ctx->flags |= E2F_FLAG_ABORT;
2911                 return;
2912         }
2913 }
2914
2915 /*
2916  * Marks a block as in use, setting the dup_map if it's been set
2917  * already.  Called by process_block and process_bad_block.
2918  *
2919  * WARNING: Assumes checks have already been done to make sure block
2920  * is valid.  This is true in both process_block and process_bad_block.
2921  */
2922 static _INLINE_ void mark_block_used(e2fsck_t ctx, blk64_t block)
2923 {
2924         struct          problem_context pctx;
2925
2926         clear_problem_context(&pctx);
2927
2928         if (ext2fs_fast_test_block_bitmap2(ctx->block_found_map, block)) {
2929                 if (ext2fs_has_feature_shared_blocks(ctx->fs->super) &&
2930                     !(ctx->options & E2F_OPT_UNSHARE_BLOCKS)) {
2931                         return;
2932                 }
2933                 if (!ctx->block_dup_map) {
2934                         pctx.errcode = e2fsck_allocate_block_bitmap(ctx->fs,
2935                                         _("multiply claimed block map"),
2936                                         EXT2FS_BMAP64_RBTREE, "block_dup_map",
2937                                         &ctx->block_dup_map);
2938                         if (pctx.errcode) {
2939                                 pctx.num = 3;
2940                                 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR,
2941                                             &pctx);
2942                                 /* Should never get here */
2943                                 ctx->flags |= E2F_FLAG_ABORT;
2944                                 return;
2945                         }
2946                 }
2947                 ext2fs_fast_mark_block_bitmap2(ctx->block_dup_map, block);
2948         } else {
2949                 ext2fs_fast_mark_block_bitmap2(ctx->block_found_map, block);
2950         }
2951 }
2952
2953 /*
2954  * When cluster size is greater than one block, it is caller's responsibility
2955  * to make sure block parameter starts at a cluster boundary.
2956  */
2957 static _INLINE_ void mark_blocks_used(e2fsck_t ctx, blk64_t block,
2958                                       unsigned int num)
2959 {
2960         if (ext2fs_test_block_bitmap_range2(ctx->block_found_map, block, num))
2961                 ext2fs_mark_block_bitmap_range2(ctx->block_found_map, block, num);
2962         else {
2963                 unsigned int i;
2964
2965                 for (i = 0; i < num; i += EXT2FS_CLUSTER_RATIO(ctx->fs))
2966                         mark_block_used(ctx, block + i);
2967         }
2968 }
2969
2970 /*
2971  * Adjust the extended attribute block's reference counts at the end
2972  * of pass 1, either by subtracting out references for EA blocks that
2973  * are still referenced in ctx->refcount, or by adding references for
2974  * EA blocks that had extra references as accounted for in
2975  * ctx->refcount_extra.
2976  */
2977 static void adjust_extattr_refcount(e2fsck_t ctx, ext2_refcount_t refcount,
2978                                     char *block_buf, int adjust_sign)
2979 {
2980         struct ext2_ext_attr_header     *header;
2981         struct problem_context          pctx;
2982         ext2_filsys                     fs = ctx->fs;
2983         blk64_t                         blk;
2984         __u32                           should_be;
2985         ea_value_t                      count;
2986
2987         clear_problem_context(&pctx);
2988
2989         ea_refcount_intr_begin(refcount);
2990         while (1) {
2991                 if ((blk = ea_refcount_intr_next(refcount, &count)) == 0)
2992                         break;
2993                 pctx.blk = blk;
2994                 pctx.errcode = ext2fs_read_ext_attr3(fs, blk, block_buf,
2995                                                      pctx.ino);
2996                 if (pctx.errcode) {
2997                         fix_problem(ctx, PR_1_EXTATTR_READ_ABORT, &pctx);
2998                         return;
2999                 }
3000                 header = (struct ext2_ext_attr_header *) block_buf;
3001                 pctx.blkcount = header->h_refcount;
3002                 should_be = header->h_refcount + adjust_sign * (int)count;
3003                 pctx.num = should_be;
3004                 if (fix_problem(ctx, PR_1_EXTATTR_REFCOUNT, &pctx)) {
3005                         header->h_refcount = should_be;
3006                         pctx.errcode = ext2fs_write_ext_attr3(fs, blk,
3007                                                              block_buf,
3008                                                              pctx.ino);
3009                         if (pctx.errcode) {
3010                                 fix_problem(ctx, PR_1_EXTATTR_WRITE_ABORT,
3011                                             &pctx);
3012                                 continue;
3013                         }
3014                 }
3015         }
3016 }
3017
3018 /*
3019  * Handle processing the extended attribute blocks
3020  */
3021 static int check_ext_attr(e2fsck_t ctx, struct problem_context *pctx,
3022                            char *block_buf, struct ea_quota *ea_block_quota)
3023 {
3024         ext2_filsys fs = ctx->fs;
3025         ext2_ino_t      ino = pctx->ino;
3026         struct ext2_inode *inode = pctx->inode;
3027         blk64_t         blk;
3028         char *          end;
3029         struct ext2_ext_attr_header *header;
3030         struct ext2_ext_attr_entry *first, *entry;
3031         blk64_t         quota_blocks = EXT2FS_C2B(fs, 1);
3032         __u64           quota_inodes = 0;
3033         region_t        region = 0;
3034         int             failed_csum = 0;
3035
3036         ea_block_quota->blocks = 0;
3037         ea_block_quota->inodes = 0;
3038
3039         blk = ext2fs_file_acl_block(fs, inode);
3040         if (blk == 0)
3041                 return 0;
3042
3043         /*
3044          * If the Extended attribute flag isn't set, then a non-zero
3045          * file acl means that the inode is corrupted.
3046          *
3047          * Or if the extended attribute block is an invalid block,
3048          * then the inode is also corrupted.
3049          */
3050         if (!ext2fs_has_feature_xattr(fs->super) ||
3051             (blk < fs->super->s_first_data_block) ||
3052             (blk >= ext2fs_blocks_count(fs->super))) {
3053                 mark_inode_bad(ctx, ino);
3054                 return 0;
3055         }
3056
3057         /* If ea bitmap hasn't been allocated, create it */
3058         if (!ctx->block_ea_map) {
3059                 pctx->errcode = e2fsck_allocate_block_bitmap(fs,
3060                                         _("ext attr block map"),
3061                                         EXT2FS_BMAP64_RBTREE, "block_ea_map",
3062                                         &ctx->block_ea_map);
3063                 if (pctx->errcode) {
3064                         pctx->num = 2;
3065                         fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, pctx);
3066                         ctx->flags |= E2F_FLAG_ABORT;
3067                         return 0;
3068                 }
3069         }
3070
3071         /* Create the EA refcount structure if necessary */
3072         if (!ctx->refcount) {
3073                 pctx->errcode = ea_refcount_create(0, &ctx->refcount);
3074                 if (pctx->errcode) {
3075                         pctx->num = 1;
3076                         fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
3077                         ctx->flags |= E2F_FLAG_ABORT;
3078                         return 0;
3079                 }
3080         }
3081
3082 #if 0
3083         /* Debugging text */
3084         printf("Inode %u has EA block %u\n", ino, blk);
3085 #endif
3086
3087         /* Have we seen this EA block before? */
3088         if (ext2fs_fast_test_block_bitmap2(ctx->block_ea_map, blk)) {
3089                 ea_block_quota->blocks = EXT2FS_C2B(fs, 1);
3090                 ea_block_quota->inodes = 0;
3091
3092                 if (ctx->ea_block_quota_blocks) {
3093                         ea_refcount_fetch(ctx->ea_block_quota_blocks, blk,
3094                                           &quota_blocks);
3095                         if (quota_blocks)
3096                                 ea_block_quota->blocks = quota_blocks;
3097                 }
3098
3099                 if (ctx->ea_block_quota_inodes)
3100                         ea_refcount_fetch(ctx->ea_block_quota_inodes, blk,
3101                                           &ea_block_quota->inodes);
3102
3103                 if (ea_refcount_decrement(ctx->refcount, blk, 0) == 0)
3104                         return 1;
3105                 /* Ooops, this EA was referenced more than it stated */
3106                 if (!ctx->refcount_extra) {
3107                         pctx->errcode = ea_refcount_create(0,
3108                                            &ctx->refcount_extra);
3109                         if (pctx->errcode) {
3110                                 pctx->num = 2;
3111                                 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
3112                                 ctx->flags |= E2F_FLAG_ABORT;
3113                                 return 0;
3114                         }
3115                 }
3116                 ea_refcount_increment(ctx->refcount_extra, blk, 0);
3117                 return 1;
3118         }
3119
3120         /*
3121          * OK, we haven't seen this EA block yet.  So we need to
3122          * validate it
3123          */
3124         pctx->blk = blk;
3125         pctx->errcode = ext2fs_read_ext_attr3(fs, blk, block_buf, pctx->ino);
3126         if (pctx->errcode == EXT2_ET_EXT_ATTR_CSUM_INVALID) {
3127                 pctx->errcode = 0;
3128                 failed_csum = 1;
3129         } else if (pctx->errcode == EXT2_ET_BAD_EA_HEADER)
3130                 pctx->errcode = 0;
3131
3132         if (pctx->errcode &&
3133             fix_problem(ctx, PR_1_READ_EA_BLOCK, pctx)) {
3134                 pctx->errcode = 0;
3135                 goto clear_extattr;
3136         }
3137         header = (struct ext2_ext_attr_header *) block_buf;
3138         pctx->blk = ext2fs_file_acl_block(fs, inode);
3139         if (((ctx->ext_attr_ver == 1) &&
3140              (header->h_magic != EXT2_EXT_ATTR_MAGIC_v1)) ||
3141             ((ctx->ext_attr_ver == 2) &&
3142              (header->h_magic != EXT2_EXT_ATTR_MAGIC))) {
3143                 if (fix_problem(ctx, PR_1_BAD_EA_BLOCK, pctx))
3144                         goto clear_extattr;
3145         }
3146
3147         if (header->h_blocks != 1) {
3148                 if (fix_problem(ctx, PR_1_EA_MULTI_BLOCK, pctx))
3149                         goto clear_extattr;
3150         }
3151
3152         if (pctx->errcode && fix_problem(ctx, PR_1_READ_EA_BLOCK, pctx))
3153                 goto clear_extattr;
3154
3155         region = region_create(0, fs->blocksize);
3156         if (!region) {
3157                 fix_problem(ctx, PR_1_EA_ALLOC_REGION_ABORT, pctx);
3158                 ctx->flags |= E2F_FLAG_ABORT;
3159                 return 0;
3160         }
3161         if (region_allocate(region, 0, sizeof(struct ext2_ext_attr_header))) {
3162                 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
3163                         goto clear_extattr;
3164         }
3165
3166         first = (struct ext2_ext_attr_entry *)(header+1);
3167         end = block_buf + fs->blocksize;
3168         entry = first;
3169         while ((char *)entry < end && *(__u32 *)entry) {
3170                 __u32 hash;
3171
3172                 if (region_allocate(region, (char *)entry - (char *)header,
3173                                    EXT2_EXT_ATTR_LEN(entry->e_name_len))) {
3174                         if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
3175                                 goto clear_extattr;
3176                         break;
3177                 }
3178                 if ((ctx->ext_attr_ver == 1 &&
3179                      (entry->e_name_len == 0 || entry->e_name_index != 0)) ||
3180                     (ctx->ext_attr_ver == 2 &&
3181                      entry->e_name_index == 0)) {
3182                         if (fix_problem(ctx, PR_1_EA_BAD_NAME, pctx))
3183                                 goto clear_extattr;
3184                         break;
3185                 }
3186                 if (entry->e_value_inum == 0) {
3187                         if (entry->e_value_size > EXT2_XATTR_SIZE_MAX ||
3188                             (entry->e_value_offs + entry->e_value_size >
3189                              fs->blocksize)) {
3190                                 if (fix_problem(ctx, PR_1_EA_BAD_VALUE, pctx))
3191                                         goto clear_extattr;
3192                                 break;
3193                         }
3194                         if (entry->e_value_size &&
3195                             region_allocate(region, entry->e_value_offs,
3196                                             EXT2_EXT_ATTR_SIZE(entry->e_value_size))) {
3197                                 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION,
3198                                                 pctx))
3199                                         goto clear_extattr;
3200                         }
3201
3202                         hash = ext2fs_ext_attr_hash_entry(entry, block_buf +
3203                                                           entry->e_value_offs);
3204
3205                         if (entry->e_hash != hash) {
3206                                 pctx->num = entry->e_hash;
3207                                 if (fix_problem(ctx, PR_1_ATTR_HASH, pctx))
3208                                         goto clear_extattr;
3209                                 entry->e_hash = hash;
3210                         }
3211                 } else {
3212                         problem_t problem;
3213                         blk64_t entry_quota_blocks;
3214
3215                         problem = check_large_ea_inode(ctx, entry, pctx,
3216                                                        &entry_quota_blocks);
3217                         if (problem && fix_problem(ctx, problem, pctx))
3218                                 goto clear_extattr;
3219
3220                         quota_blocks += entry_quota_blocks;
3221                         quota_inodes++;
3222                 }
3223
3224                 entry = EXT2_EXT_ATTR_NEXT(entry);
3225         }
3226         if (region_allocate(region, (char *)entry - (char *)header, 4)) {
3227                 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
3228                         goto clear_extattr;
3229         }
3230         region_free(region);
3231
3232         /*
3233          * We only get here if there was no other errors that were fixed.
3234          * If there was a checksum fail, ask to correct it.
3235          */
3236         if (failed_csum &&
3237             fix_problem(ctx, PR_1_EA_BLOCK_ONLY_CSUM_INVALID, pctx)) {
3238                 pctx->errcode = ext2fs_write_ext_attr3(fs, blk, block_buf,
3239                                                        pctx->ino);
3240                 if (pctx->errcode)
3241                         return 0;
3242         }
3243
3244         if (quota_blocks != EXT2FS_C2B(fs, 1U)) {
3245                 if (!ctx->ea_block_quota_blocks) {
3246                         pctx->errcode = ea_refcount_create(0,
3247                                                 &ctx->ea_block_quota_blocks);
3248                         if (pctx->errcode) {
3249                                 pctx->num = 3;
3250                                 goto refcount_fail;
3251                         }
3252                 }
3253                 ea_refcount_store(ctx->ea_block_quota_blocks, blk,
3254                                   quota_blocks);
3255         }
3256
3257         if (quota_inodes) {
3258                 if (!ctx->ea_block_quota_inodes) {
3259                         pctx->errcode = ea_refcount_create(0,
3260                                                 &ctx->ea_block_quota_inodes);
3261                         if (pctx->errcode) {
3262                                 pctx->num = 4;
3263 refcount_fail:
3264                                 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
3265                                 ctx->flags |= E2F_FLAG_ABORT;
3266                                 return 0;
3267                         }
3268                 }
3269
3270                 ea_refcount_store(ctx->ea_block_quota_inodes, blk,
3271                                   quota_inodes);
3272         }
3273         ea_block_quota->blocks = quota_blocks;
3274         ea_block_quota->inodes = quota_inodes;
3275
3276         inc_ea_inode_refs(ctx, pctx, first, end);
3277         ea_refcount_store(ctx->refcount, blk, header->h_refcount - 1);
3278         mark_block_used(ctx, blk);
3279         ext2fs_fast_mark_block_bitmap2(ctx->block_ea_map, blk);
3280         return 1;
3281
3282 clear_extattr:
3283         if (region)
3284                 region_free(region);
3285         ext2fs_file_acl_block_set(fs, inode, 0);
3286         e2fsck_write_inode(ctx, ino, inode, "check_ext_attr");
3287         return 0;
3288 }
3289
3290 /* Returns 1 if bad htree, 0 if OK */
3291 static int handle_htree(e2fsck_t ctx, struct problem_context *pctx,
3292                         ext2_ino_t ino, struct ext2_inode *inode,
3293                         char *block_buf)
3294 {
3295         struct ext2_dx_root_info        *root;
3296         ext2_filsys                     fs = ctx->fs;
3297         errcode_t                       retval;
3298         blk64_t                         blk;
3299
3300         if ((!LINUX_S_ISDIR(inode->i_mode) &&
3301              fix_problem(ctx, PR_1_HTREE_NODIR, pctx)) ||
3302             (!ext2fs_has_feature_dir_index(fs->super) &&
3303              fix_problem(ctx, PR_1_HTREE_SET, pctx)))
3304                 return 1;
3305
3306         pctx->errcode = ext2fs_bmap2(fs, ino, inode, 0, 0, 0, 0, &blk);
3307
3308         if ((pctx->errcode) ||
3309             (blk == 0) ||
3310             (blk < fs->super->s_first_data_block) ||
3311             (blk >= ext2fs_blocks_count(fs->super))) {
3312                 if (fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
3313                         return 1;
3314                 else
3315                         return 0;
3316         }
3317
3318         retval = io_channel_read_blk64(fs->io, blk, 1, block_buf);
3319         if (retval && fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
3320                 return 1;
3321
3322         /* XXX should check that beginning matches a directory */
3323         root = (struct ext2_dx_root_info *) (block_buf + 24);
3324
3325         if ((root->reserved_zero || root->info_length < 8) &&
3326             fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
3327                 return 1;
3328
3329         pctx->num = root->hash_version;
3330         if ((root->hash_version != EXT2_HASH_LEGACY) &&
3331             (root->hash_version != EXT2_HASH_HALF_MD4) &&
3332             (root->hash_version != EXT2_HASH_TEA) &&
3333             (root->hash_version != EXT2_HASH_SIPHASH) &&
3334             fix_problem(ctx, PR_1_HTREE_HASHV, pctx))
3335                 return 1;
3336
3337         if (ext4_hash_in_dirent(inode)) {
3338                 if (root->hash_version != EXT2_HASH_SIPHASH &&
3339                     fix_problem(ctx, PR_1_HTREE_NEEDS_SIPHASH, pctx))
3340                         return 1;
3341         } else {
3342                 if (root->hash_version == EXT2_HASH_SIPHASH &&
3343                    fix_problem(ctx, PR_1_HTREE_CANNOT_SIPHASH, pctx))
3344                         return 1;
3345         }
3346
3347         if ((root->unused_flags & EXT2_HASH_FLAG_INCOMPAT) &&
3348             fix_problem(ctx, PR_1_HTREE_INCOMPAT, pctx))
3349                 return 1;
3350
3351         pctx->num = root->indirect_levels;
3352         /* if htree level is clearly too high, consider it to be broken */
3353         if (root->indirect_levels > EXT4_HTREE_LEVEL &&
3354             fix_problem(ctx, PR_1_HTREE_DEPTH, pctx))
3355                 return 1;
3356
3357         /* if level is only maybe too high, LARGE_DIR feature could be unset */
3358         if (root->indirect_levels > ext2_dir_htree_level(fs) &&
3359             !ext2fs_has_feature_largedir(fs->super)) {
3360                 int blockbits = EXT2_BLOCK_SIZE_BITS(fs->super) + 10;
3361                 unsigned idx_pb = 1 << (blockbits - 3);
3362
3363                 /* compare inode size/blocks vs. max-sized 2-level htree */
3364                 if (EXT2_I_SIZE(pctx->inode) <
3365                     (idx_pb - 1) * (idx_pb - 2) << blockbits &&
3366                     pctx->inode->i_blocks <
3367                     (idx_pb - 1) * (idx_pb - 2) << (blockbits - 9) &&
3368                     fix_problem(ctx, PR_1_HTREE_DEPTH, pctx))
3369                         return 1;
3370         }
3371
3372         if (root->indirect_levels > EXT4_HTREE_LEVEL_COMPAT ||
3373             ext2fs_needs_large_file_feature(EXT2_I_SIZE(inode)))
3374                 ctx->large_dirs++;
3375
3376         return 0;
3377 }
3378
3379 void e2fsck_clear_inode(e2fsck_t ctx, ext2_ino_t ino,
3380                         struct ext2_inode *inode, int restart_flag,
3381                         const char *source)
3382 {
3383         inode->i_flags = 0;
3384         inode->i_links_count = 0;
3385         ext2fs_icount_store(ctx->inode_link_info, ino, 0);
3386         inode->i_dtime = ctx->now;
3387
3388         /*
3389          * If a special inode has such rotten block mappings that we
3390          * want to clear the whole inode, be sure to actually zap
3391          * the block maps because i_links_count isn't checked for
3392          * special inodes, and we'll end up right back here the next
3393          * time we run fsck.
3394          */
3395         if (ino < EXT2_FIRST_INODE(ctx->fs->super))
3396                 memset(inode->i_block, 0, sizeof(inode->i_block));
3397
3398         ext2fs_unmark_inode_bitmap2(ctx->inode_dir_map, ino);
3399         ext2fs_unmark_inode_bitmap2(ctx->inode_used_map, ino);
3400         if (ctx->inode_reg_map)
3401                 ext2fs_unmark_inode_bitmap2(ctx->inode_reg_map, ino);
3402         if (ctx->inode_bad_map)
3403                 ext2fs_unmark_inode_bitmap2(ctx->inode_bad_map, ino);
3404
3405         /*
3406          * If the inode was partially accounted for before processing
3407          * was aborted, we need to restart the pass 1 scan.
3408          */
3409         ctx->flags |= restart_flag;
3410
3411         if (ino == EXT2_BAD_INO)
3412                 memset(inode, 0, sizeof(struct ext2_inode));
3413
3414         e2fsck_write_inode(ctx, ino, inode, source);
3415 }
3416
3417 /*
3418  * Use the multiple-blocks reclamation code to fix alignment problems in
3419  * a bigalloc filesystem.  We want a logical cluster to map to *only* one
3420  * physical cluster, and we want the block offsets within that cluster to
3421  * line up.
3422  */
3423 static int has_unaligned_cluster_map(e2fsck_t ctx,
3424                                      blk64_t last_pblk, blk64_t last_lblk,
3425                                      blk64_t pblk, blk64_t lblk)
3426 {
3427         blk64_t cluster_mask;
3428
3429         if (!ctx->fs->cluster_ratio_bits)
3430                 return 0;
3431         cluster_mask = EXT2FS_CLUSTER_MASK(ctx->fs);
3432
3433         /*
3434          * If the block in the logical cluster doesn't align with the block in
3435          * the physical cluster...
3436          */
3437         if ((lblk & cluster_mask) != (pblk & cluster_mask))
3438                 return 1;
3439
3440         /*
3441          * If we cross a physical cluster boundary within a logical cluster...
3442          */
3443         if (last_pblk && (lblk & cluster_mask) != 0 &&
3444             EXT2FS_B2C(ctx->fs, lblk) == EXT2FS_B2C(ctx->fs, last_lblk) &&
3445             EXT2FS_B2C(ctx->fs, pblk) != EXT2FS_B2C(ctx->fs, last_pblk))
3446                 return 1;
3447
3448         return 0;
3449 }
3450
3451 static void scan_extent_node(e2fsck_t ctx, struct problem_context *pctx,
3452                              struct process_block_struct *pb,
3453                              blk64_t start_block, blk64_t end_block,
3454                              blk64_t eof_block,
3455                              ext2_extent_handle_t ehandle,
3456                              int try_repairs)
3457 {
3458         struct ext2fs_extent    extent;
3459         blk64_t                 blk, last_lblk;
3460         unsigned int            i, n;
3461         int                     is_dir, is_leaf;
3462         problem_t               problem;
3463         struct ext2_extent_info info;
3464         int                     failed_csum = 0;
3465
3466         if (pctx->errcode == EXT2_ET_EXTENT_CSUM_INVALID)
3467                 failed_csum = 1;
3468
3469         pctx->errcode = ext2fs_extent_get_info(ehandle, &info);
3470         if (pctx->errcode)
3471                 return;
3472         if (!(ctx->options & E2F_OPT_FIXES_ONLY) &&
3473             !pb->eti.force_rebuild &&
3474             info.curr_level < MAX_EXTENT_DEPTH_COUNT) {
3475                 struct extent_tree_level *etl;
3476
3477                 etl = pb->eti.ext_info + info.curr_level;
3478                 etl->num_extents += info.num_entries;
3479                 etl->max_extents += info.max_entries;
3480                 /*
3481                  * Implementation wart: Splitting extent blocks when appending
3482                  * will leave the old block with one free entry.  Therefore
3483                  * unless the node is totally full, pretend that a non-root
3484                  * extent block can hold one fewer entry than it actually does,
3485                  * so that we don't repeatedly rebuild the extent tree.
3486                  */
3487                 if (info.curr_level && info.num_entries < info.max_entries)
3488                         etl->max_extents--;
3489         }
3490
3491         pctx->errcode = ext2fs_extent_get(ehandle, EXT2_EXTENT_FIRST_SIB,
3492                                           &extent);
3493         while ((pctx->errcode == 0 ||
3494                 pctx->errcode == EXT2_ET_EXTENT_CSUM_INVALID) &&
3495                info.num_entries-- > 0) {
3496                 is_leaf = extent.e_flags & EXT2_EXTENT_FLAGS_LEAF;
3497                 is_dir = LINUX_S_ISDIR(pctx->inode->i_mode);
3498                 last_lblk = extent.e_lblk + extent.e_len - 1;
3499
3500                 problem = 0;
3501                 pctx->blk = extent.e_pblk;
3502                 pctx->blk2 = extent.e_lblk;
3503                 pctx->num = extent.e_len;
3504                 pctx->blkcount = extent.e_lblk + extent.e_len;
3505
3506                 if (extent.e_pblk == 0 ||
3507                     extent.e_pblk < ctx->fs->super->s_first_data_block ||
3508                     extent.e_pblk >= ext2fs_blocks_count(ctx->fs->super))
3509                         problem = PR_1_EXTENT_BAD_START_BLK;
3510                 else if (extent.e_lblk < start_block)
3511                         problem = PR_1_OUT_OF_ORDER_EXTENTS;
3512                 else if ((end_block && last_lblk > end_block) &&
3513                          !(last_lblk > eof_block &&
3514                            ((extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT) ||
3515                             (pctx->inode->i_flags & EXT4_VERITY_FL))))
3516                         problem = PR_1_EXTENT_END_OUT_OF_BOUNDS;
3517                 else if (is_leaf && extent.e_len == 0)
3518                         problem = PR_1_EXTENT_LENGTH_ZERO;
3519                 else if (is_leaf &&
3520                          (extent.e_pblk + extent.e_len) >
3521                          ext2fs_blocks_count(ctx->fs->super))
3522                         problem = PR_1_EXTENT_ENDS_BEYOND;
3523                 else if (is_leaf && is_dir && !pctx->inode->i_size_high &&
3524                          !ext2fs_has_feature_largedir(ctx->fs->super) &&
3525                          ((extent.e_lblk + extent.e_len) >
3526                           (1U << (21 - ctx->fs->super->s_log_block_size))))
3527                         problem = PR_1_TOOBIG_DIR;
3528
3529                 if (is_leaf && problem == 0 && extent.e_len > 0) {
3530 #if 0
3531                         printf("extent_region(ino=%u, expect=%llu, "
3532                                "lblk=%llu, len=%u)\n", pb->ino,
3533                                (unsigned long long) pb->next_lblock,
3534                                (unsigned long long) extent.e_lblk,
3535                                extent.e_len);
3536 #endif
3537                         if (extent.e_lblk < pb->next_lblock)
3538                                 problem = PR_1_EXTENT_COLLISION;
3539                         else if (extent.e_lblk + extent.e_len > pb->next_lblock)
3540                                 pb->next_lblock = extent.e_lblk + extent.e_len;
3541                 }
3542
3543                 /*
3544                  * Uninitialized blocks in a directory?  Clear the flag and
3545                  * we'll interpret the blocks later.
3546                  */
3547                 if (try_repairs && is_dir && problem == 0 &&
3548                     (extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT) &&
3549                     fix_problem(ctx, PR_1_UNINIT_DBLOCK, pctx)) {
3550                         extent.e_flags &= ~EXT2_EXTENT_FLAGS_UNINIT;
3551                         pb->inode_modified = 1;
3552                         pctx->errcode = ext2fs_extent_replace(ehandle, 0,
3553                                                               &extent);
3554                         if (pctx->errcode)
3555                                 return;
3556                         failed_csum = 0;
3557                 }
3558 #ifdef CONFIG_DEVELOPER_FEATURES
3559                 if (try_repairs && !is_dir && problem == 0 &&
3560                     (ctx->options & E2F_OPT_CLEAR_UNINIT) &&
3561                     (extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT) &&
3562                     fix_problem(ctx, PR_1_CLEAR_UNINIT_EXTENT, pctx)) {
3563                         extent.e_flags &= ~EXT2_EXTENT_FLAGS_UNINIT;
3564                         pb->inode_modified = 1;
3565                         pctx->errcode = ext2fs_extent_replace(ehandle, 0,
3566                                                               &extent);
3567                         if (pctx->errcode)
3568                                 return;
3569                         failed_csum = 0;
3570                 }
3571 #endif
3572                 if (try_repairs && problem) {
3573 report_problem:
3574                         if (fix_problem(ctx, problem, pctx)) {
3575                                 if (ctx->invalid_bitmaps) {
3576                                         /*
3577                                          * If fsck knows the bitmaps are bad,
3578                                          * skip to the next extent and
3579                                          * try to clear this extent again
3580                                          * after fixing the bitmaps, by
3581                                          * restarting fsck.
3582                                          */
3583                                         pctx->errcode = ext2fs_extent_get(
3584                                                           ehandle,
3585                                                           EXT2_EXTENT_NEXT_SIB,
3586                                                           &extent);
3587                                         ctx->flags |= E2F_FLAG_RESTART_LATER;
3588                                         if (pctx->errcode ==
3589                                                     EXT2_ET_NO_CURRENT_NODE) {
3590                                                 pctx->errcode = 0;
3591                                                 break;
3592                                         }
3593                                         continue;
3594                                 }
3595                                 e2fsck_read_bitmaps(ctx);
3596                                 pb->inode_modified = 1;
3597                                 pctx->errcode =
3598                                         ext2fs_extent_delete(ehandle, 0);
3599                                 if (pctx->errcode) {
3600                                         pctx->str = "ext2fs_extent_delete";
3601                                         return;
3602                                 }
3603                                 pctx->errcode = ext2fs_extent_fix_parents(ehandle);
3604                                 if (pctx->errcode &&
3605                                     pctx->errcode != EXT2_ET_NO_CURRENT_NODE) {
3606                                         pctx->str = "ext2fs_extent_fix_parents";
3607                                         return;
3608                                 }
3609                                 pctx->errcode = ext2fs_extent_get(ehandle,
3610                                                                   EXT2_EXTENT_CURRENT,
3611                                                                   &extent);
3612                                 if (pctx->errcode == EXT2_ET_NO_CURRENT_NODE) {
3613                                         pctx->errcode = 0;
3614                                         break;
3615                                 }
3616                                 failed_csum = 0;
3617                                 continue;
3618                         }
3619                         goto next;
3620                 }
3621
3622                 if (!is_leaf) {
3623                         blk64_t lblk = extent.e_lblk;
3624                         int next_try_repairs = 1;
3625
3626                         blk = extent.e_pblk;
3627
3628                         /*
3629                          * If this lower extent block collides with critical
3630                          * metadata, don't try to repair the damage.  Pass 1b
3631                          * will reallocate the block; then we can try again.
3632                          */
3633                         if (pb->ino != EXT2_RESIZE_INO &&
3634                             extent.e_pblk < ctx->fs->super->s_blocks_count &&
3635                             ext2fs_test_block_bitmap2(ctx->block_metadata_map,
3636                                                       extent.e_pblk)) {
3637                                 next_try_repairs = 0;
3638                                 pctx->blk = blk;
3639                                 fix_problem(ctx,
3640                                             PR_1_CRITICAL_METADATA_COLLISION,
3641                                             pctx);
3642                                 if ((ctx->options & E2F_OPT_NO) == 0)
3643                                         ctx->flags |= E2F_FLAG_RESTART_LATER;
3644                         }
3645                         pctx->errcode = ext2fs_extent_get(ehandle,
3646                                                   EXT2_EXTENT_DOWN, &extent);
3647                         if (pctx->errcode &&
3648                             pctx->errcode != EXT2_ET_EXTENT_CSUM_INVALID) {
3649                                 pctx->str = "EXT2_EXTENT_DOWN";
3650                                 problem = PR_1_EXTENT_HEADER_INVALID;
3651                                 if (!next_try_repairs)
3652                                         return;
3653                                 if (pctx->errcode == EXT2_ET_EXTENT_HEADER_BAD)
3654                                         goto report_problem;
3655                                 return;
3656                         }
3657                         /* The next extent should match this index's logical start */
3658                         if (extent.e_lblk != lblk) {
3659                                 struct ext2_extent_info e_info;
3660
3661                                 pctx->errcode = ext2fs_extent_get_info(ehandle,
3662                                                                        &e_info);
3663                                 if (pctx->errcode) {
3664                                         pctx->str = "ext2fs_extent_get_info";
3665                                         return;
3666                                 }
3667                                 pctx->blk = lblk;
3668                                 pctx->blk2 = extent.e_lblk;
3669                                 pctx->num = e_info.curr_level - 1;
3670                                 problem = PR_1_EXTENT_INDEX_START_INVALID;
3671                                 if (fix_problem(ctx, problem, pctx)) {
3672                                         pb->inode_modified = 1;
3673                                         pctx->errcode =
3674                                                 ext2fs_extent_fix_parents(ehandle);
3675                                         if (pctx->errcode) {
3676                                                 pctx->str = "ext2fs_extent_fix_parents";
3677                                                 return;
3678                                         }
3679                                 }
3680                         }
3681                         scan_extent_node(ctx, pctx, pb, extent.e_lblk,
3682                                          last_lblk, eof_block, ehandle,
3683                                          next_try_repairs);
3684                         if (pctx->errcode)
3685                                 return;
3686                         pctx->errcode = ext2fs_extent_get(ehandle,
3687                                                   EXT2_EXTENT_UP, &extent);
3688                         if (pctx->errcode) {
3689                                 pctx->str = "EXT2_EXTENT_UP";
3690                                 return;
3691                         }
3692                         mark_block_used(ctx, blk);
3693                         pb->num_blocks++;
3694                         goto next;
3695                 }
3696
3697                 if ((pb->previous_block != 0) &&
3698                     (pb->previous_block+1 != extent.e_pblk)) {
3699                         if (ctx->options & E2F_OPT_FRAGCHECK) {
3700                                 char type = '?';
3701
3702                                 if (pb->is_dir)
3703                                         type = 'd';
3704                                 else if (pb->is_reg)
3705                                         type = 'f';
3706
3707                                 printf(("%6lu(%c): expecting %6lu "
3708                                         "actual extent "
3709                                         "phys %6lu log %lu len %lu\n"),
3710                                        (unsigned long) pctx->ino, type,
3711                                        (unsigned long) pb->previous_block+1,
3712                                        (unsigned long) extent.e_pblk,
3713                                        (unsigned long) extent.e_lblk,
3714                                        (unsigned long) extent.e_len);
3715                         }
3716                         pb->fragmented = 1;
3717                 }
3718                 /*
3719                  * If we notice a gap in the logical block mappings of an
3720                  * extent-mapped directory, offer to close the hole by
3721                  * moving the logical block down, otherwise we'll go mad in
3722                  * pass 3 allocating empty directory blocks to fill the hole.
3723                  */
3724                 if (try_repairs && is_dir &&
3725                     pb->last_block + 1 < extent.e_lblk) {
3726                         blk64_t new_lblk;
3727
3728                         new_lblk = pb->last_block + 1;
3729                         if (EXT2FS_CLUSTER_RATIO(ctx->fs) > 1)
3730                                 new_lblk = ((new_lblk +
3731                                              EXT2FS_CLUSTER_RATIO(ctx->fs) - 1) &
3732                                             ~EXT2FS_CLUSTER_MASK(ctx->fs)) |
3733                                            (extent.e_pblk &
3734                                             EXT2FS_CLUSTER_MASK(ctx->fs));
3735                         pctx->blk = extent.e_lblk;
3736                         pctx->blk2 = new_lblk;
3737                         if (fix_problem(ctx, PR_1_COLLAPSE_DBLOCK, pctx)) {
3738                                 extent.e_lblk = new_lblk;
3739                                 pb->inode_modified = 1;
3740                                 pctx->errcode = ext2fs_extent_replace(ehandle,
3741                                                                 0, &extent);
3742                                 if (pctx->errcode) {
3743                                         pctx->errcode = 0;
3744                                         goto alloc_later;
3745                                 }
3746                                 pctx->errcode = ext2fs_extent_fix_parents(ehandle);
3747                                 if (pctx->errcode)
3748                                         goto failed_add_dir_block;
3749                                 pctx->errcode = ext2fs_extent_goto(ehandle,
3750                                                                 extent.e_lblk);
3751                                 if (pctx->errcode)
3752                                         goto failed_add_dir_block;
3753                                 last_lblk = extent.e_lblk + extent.e_len - 1;
3754                                 failed_csum = 0;
3755                         }
3756                 }
3757 alloc_later:
3758                 if (is_dir) {
3759                         while (++pb->last_db_block <
3760                                (e2_blkcnt_t) extent.e_lblk) {
3761                                 pctx->errcode = ext2fs_add_dir_block2(
3762                                                         ctx->fs->dblist,
3763                                                         pb->ino, 0,
3764                                                         pb->last_db_block);
3765                                 if (pctx->errcode) {
3766                                         pctx->blk = 0;
3767                                         pctx->num = pb->last_db_block;
3768                                         goto failed_add_dir_block;
3769                                 }
3770                         }
3771
3772                         for (i = 0; i < extent.e_len; i++) {
3773                                 pctx->errcode = ext2fs_add_dir_block2(
3774                                                         ctx->fs->dblist,
3775                                                         pctx->ino,
3776                                                         extent.e_pblk + i,
3777                                                         extent.e_lblk + i);
3778                                 if (pctx->errcode) {
3779                                         pctx->blk = extent.e_pblk + i;
3780                                         pctx->num = extent.e_lblk + i;
3781                                 failed_add_dir_block:
3782                                         fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
3783                                         /* Should never get here */
3784                                         ctx->flags |= E2F_FLAG_ABORT;
3785                                         return;
3786                                 }
3787                         }
3788                         if (extent.e_len > 0)
3789                                 pb->last_db_block = extent.e_lblk + extent.e_len - 1;
3790                 }
3791                 if (has_unaligned_cluster_map(ctx, pb->previous_block,
3792                                               pb->last_block,
3793                                               extent.e_pblk,
3794                                               extent.e_lblk)) {
3795                         for (i = 0; i < extent.e_len; i++) {
3796                                 pctx->blk = extent.e_lblk + i;
3797                                 pctx->blk2 = extent.e_pblk + i;
3798                                 fix_problem(ctx, PR_1_MISALIGNED_CLUSTER, pctx);
3799                                 mark_block_used(ctx, extent.e_pblk + i);
3800                                 mark_block_used(ctx, extent.e_pblk + i);
3801                         }
3802                 }
3803
3804                 /*
3805                  * Check whether first cluster got marked in previous iteration.
3806                  */
3807                 if (ctx->fs->cluster_ratio_bits &&
3808                     pb->previous_block &&
3809                     (EXT2FS_B2C(ctx->fs, extent.e_pblk) ==
3810                      EXT2FS_B2C(ctx->fs, pb->previous_block)))
3811                         /* Set blk to the beginning of next cluster. */
3812                         blk = EXT2FS_C2B(
3813                                 ctx->fs,
3814                                 EXT2FS_B2C(ctx->fs, extent.e_pblk) + 1);
3815                 else
3816                         /* Set blk to the beginning of current cluster. */
3817                         blk = EXT2FS_C2B(ctx->fs,
3818                                          EXT2FS_B2C(ctx->fs, extent.e_pblk));
3819
3820                 if (blk < extent.e_pblk + extent.e_len) {
3821                         mark_blocks_used(ctx, blk,
3822                                          extent.e_pblk + extent.e_len - blk);
3823                         n = DIV_ROUND_UP(extent.e_pblk + extent.e_len - blk,
3824                                          EXT2FS_CLUSTER_RATIO(ctx->fs));
3825                         pb->num_blocks += n;
3826                 }
3827                 pb->last_block = extent.e_lblk + extent.e_len - 1;
3828                 pb->previous_block = extent.e_pblk + extent.e_len - 1;
3829                 start_block = pb->last_block = last_lblk;
3830                 if (is_leaf && !is_dir &&
3831                     !(extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT))
3832                         pb->last_init_lblock = last_lblk;
3833         next:
3834                 pctx->errcode = ext2fs_extent_get(ehandle,
3835                                                   EXT2_EXTENT_NEXT_SIB,
3836                                                   &extent);
3837         }
3838
3839         /* Failed csum but passes checks?  Ask to fix checksum. */
3840         if (failed_csum &&
3841             fix_problem(ctx, PR_1_EXTENT_ONLY_CSUM_INVALID, pctx)) {
3842                 pb->inode_modified = 1;
3843                 pctx->errcode = ext2fs_extent_replace(ehandle, 0, &extent);
3844                 if (pctx->errcode)
3845                         return;
3846         }
3847
3848         if (pctx->errcode == EXT2_ET_EXTENT_NO_NEXT)
3849                 pctx->errcode = 0;
3850 }
3851
3852 static void check_blocks_extents(e2fsck_t ctx, struct problem_context *pctx,
3853                                  struct process_block_struct *pb)
3854 {
3855         struct ext2_extent_info info;
3856         struct ext2_inode       *inode = pctx->inode;
3857         ext2_extent_handle_t    ehandle;
3858         ext2_filsys             fs = ctx->fs;
3859         ext2_ino_t              ino = pctx->ino;
3860         errcode_t               retval;
3861         blk64_t                 eof_lblk;
3862         struct ext3_extent_header       *eh;
3863
3864         /* Check for a proper extent header... */
3865         eh = (struct ext3_extent_header *) &inode->i_block[0];
3866         retval = ext2fs_extent_header_verify(eh, sizeof(inode->i_block));
3867         if (retval) {
3868                 if (fix_problem(ctx, PR_1_MISSING_EXTENT_HEADER, pctx))
3869                         e2fsck_clear_inode(ctx, ino, inode, 0,
3870                                            "check_blocks_extents");
3871                 pctx->errcode = 0;
3872                 return;
3873         }
3874
3875         /* ...since this function doesn't fail if i_block is zeroed. */
3876         pctx->errcode = ext2fs_extent_open2(fs, ino, inode, &ehandle);
3877         if (pctx->errcode) {
3878                 if (fix_problem(ctx, PR_1_READ_EXTENT, pctx))
3879                         e2fsck_clear_inode(ctx, ino, inode, 0,
3880                                            "check_blocks_extents");
3881                 pctx->errcode = 0;
3882                 return;
3883         }
3884
3885         retval = ext2fs_extent_get_info(ehandle, &info);
3886         if (retval == 0) {
3887                 int max_depth = info.max_depth;
3888
3889                 if (max_depth >= MAX_EXTENT_DEPTH_COUNT)
3890                         max_depth = MAX_EXTENT_DEPTH_COUNT-1;
3891                 ctx->extent_depth_count[max_depth]++;
3892         }
3893
3894         /* Check maximum extent depth */
3895         pctx->blk = info.max_depth;
3896         pctx->blk2 = ext2fs_max_extent_depth(ehandle);
3897         if (pctx->blk2 < pctx->blk &&
3898             fix_problem(ctx, PR_1_EXTENT_BAD_MAX_DEPTH, pctx))
3899                 pb->eti.force_rebuild = 1;
3900
3901         /* Can we collect extent tree level stats? */
3902         pctx->blk = MAX_EXTENT_DEPTH_COUNT;
3903         if (pctx->blk2 > pctx->blk)
3904                 fix_problem(ctx, PR_1E_MAX_EXTENT_TREE_DEPTH, pctx);
3905         memset(pb->eti.ext_info, 0, sizeof(pb->eti.ext_info));
3906         pb->eti.ino = pb->ino;
3907
3908         pb->next_lblock = 0;
3909
3910         eof_lblk = ((EXT2_I_SIZE(inode) + fs->blocksize - 1) >>
3911                 EXT2_BLOCK_SIZE_BITS(fs->super)) - 1;
3912         scan_extent_node(ctx, pctx, pb, 0, 0, eof_lblk, ehandle, 1);
3913         if (pctx->errcode &&
3914             fix_problem(ctx, PR_1_EXTENT_ITERATE_FAILURE, pctx)) {
3915                 pb->num_blocks = 0;
3916                 inode->i_blocks = 0;
3917                 e2fsck_clear_inode(ctx, ino, inode, E2F_FLAG_RESTART,
3918                                    "check_blocks_extents");
3919                 pctx->errcode = 0;
3920         }
3921         ext2fs_extent_free(ehandle);
3922
3923         /* Rebuild unless it's a dir and we're rehashing it */
3924         if (LINUX_S_ISDIR(inode->i_mode) &&
3925             e2fsck_dir_will_be_rehashed(ctx, ino))
3926                 return;
3927
3928         if (ctx->options & E2F_OPT_CONVERT_BMAP)
3929                 e2fsck_rebuild_extents_later(ctx, ino);
3930         else
3931                 e2fsck_should_rebuild_extents(ctx, pctx, &pb->eti, &info);
3932 }
3933
3934 /*
3935  * In fact we don't need to check blocks for an inode with inline data
3936  * because this inode doesn't have any blocks.  In this function all
3937  * we need to do is add this inode into dblist when it is a directory.
3938  */
3939 static void check_blocks_inline_data(e2fsck_t ctx, struct problem_context *pctx,
3940                                      struct process_block_struct *pb)
3941 {
3942         int     flags;
3943         size_t  inline_data_size = 0;
3944
3945         if (!pb->is_dir) {
3946                 pctx->errcode = 0;
3947                 return;
3948         }
3949
3950         /* Process the dirents in i_block[] as the "first" block. */
3951         pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist, pb->ino, 0, 0);
3952         if (pctx->errcode)
3953                 goto err;
3954
3955         /* Process the dirents in the EA as a "second" block. */
3956         flags = ctx->fs->flags;
3957         ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
3958         pctx->errcode = ext2fs_inline_data_size(ctx->fs, pb->ino,
3959                                                 &inline_data_size);
3960         ctx->fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
3961                          (ctx->fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
3962         if (pctx->errcode) {
3963                 pctx->errcode = 0;
3964                 return;
3965         }
3966
3967         if (inline_data_size <= EXT4_MIN_INLINE_DATA_SIZE)
3968                 return;
3969
3970         pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist, pb->ino, 0, 1);
3971         if (pctx->errcode)
3972                 goto err;
3973
3974         return;
3975 err:
3976         pctx->blk = 0;
3977         pctx->num = 0;
3978         fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
3979         ctx->flags |= E2F_FLAG_ABORT;
3980 }
3981
3982 /*
3983  * This subroutine is called on each inode to account for all of the
3984  * blocks used by that inode.
3985  */
3986 static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
3987                          char *block_buf, const struct ea_quota *ea_ibody_quota)
3988 {
3989         ext2_filsys fs = ctx->fs;
3990         struct process_block_struct pb;
3991         ext2_ino_t      ino = pctx->ino;
3992         struct ext2_inode *inode = pctx->inode;
3993         unsigned        bad_size = 0;
3994         int             dirty_inode = 0;
3995         int             extent_fs;
3996         int             inlinedata_fs;
3997         __u64           size;
3998         struct ea_quota ea_block_quota;
3999
4000         pb.ino = ino;
4001         pb.num_blocks = EXT2FS_B2C(ctx->fs,
4002                                    ea_ibody_quota ? ea_ibody_quota->blocks : 0);
4003         pb.last_block = ~0;
4004         pb.last_init_lblock = -1;
4005         pb.last_db_block = -1;
4006         pb.num_illegal_blocks = 0;
4007         pb.suppress = 0; pb.clear = 0;
4008         pb.fragmented = 0;
4009         pb.compressed = 0;
4010         pb.previous_block = 0;
4011         pb.is_dir = LINUX_S_ISDIR(inode->i_mode);
4012         pb.is_reg = LINUX_S_ISREG(inode->i_mode);
4013         pb.max_blocks = 1U << (31 - fs->super->s_log_block_size);
4014         pb.inode = inode;
4015         pb.pctx = pctx;
4016         pb.ctx = ctx;
4017         pb.inode_modified = 0;
4018         pb.eti.force_rebuild = 0;
4019         pctx->ino = ino;
4020         pctx->errcode = 0;
4021
4022         extent_fs = ext2fs_has_feature_extents(ctx->fs->super);
4023         inlinedata_fs = ext2fs_has_feature_inline_data(ctx->fs->super);
4024
4025         if (check_ext_attr(ctx, pctx, block_buf, &ea_block_quota)) {
4026                 if (e2fsck_should_abort(ctx))
4027                         goto out;
4028                 pb.num_blocks += EXT2FS_B2C(ctx->fs, ea_block_quota.blocks);
4029         }
4030
4031         if (inlinedata_fs && (inode->i_flags & EXT4_INLINE_DATA_FL))
4032                 check_blocks_inline_data(ctx, pctx, &pb);
4033         else if (ext2fs_inode_has_valid_blocks2(fs, inode)) {
4034                 if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL))
4035                         check_blocks_extents(ctx, pctx, &pb);
4036                 else {
4037                         int flags;
4038                         /*
4039                          * If we've modified the inode, write it out before
4040                          * iterate() tries to use it.
4041                          */
4042                         if (dirty_inode) {
4043                                 e2fsck_write_inode(ctx, ino, inode,
4044                                                    "check_blocks");
4045                                 dirty_inode = 0;
4046                         }
4047                         flags = fs->flags;
4048                         fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
4049                         pctx->errcode = ext2fs_block_iterate3(fs, ino,
4050                                                 pb.is_dir ? BLOCK_FLAG_HOLE : 0,
4051                                                 block_buf, process_block, &pb);
4052                         /*
4053                          * We do not have uninitialized extents in non extent
4054                          * files.
4055                          */
4056                         pb.last_init_lblock = pb.last_block;
4057                         /*
4058                          * If iterate() changed a block mapping, we have to
4059                          * re-read the inode.  If we decide to clear the
4060                          * inode after clearing some stuff, we'll re-write the
4061                          * bad mappings into the inode!
4062                          */
4063                         if (pb.inode_modified)
4064                                 e2fsck_read_inode(ctx, ino, inode,
4065                                                   "check_blocks");
4066                         fs->flags = (flags & EXT2_FLAG_IGNORE_CSUM_ERRORS) |
4067                                     (fs->flags & ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
4068
4069                         if (ctx->options & E2F_OPT_CONVERT_BMAP) {
4070 #ifdef DEBUG
4071                                 printf("bmap rebuild ino=%d\n", ino);
4072 #endif
4073                                 if (!LINUX_S_ISDIR(inode->i_mode) ||
4074                                     !e2fsck_dir_will_be_rehashed(ctx, ino))
4075                                         e2fsck_rebuild_extents_later(ctx, ino);
4076                         }
4077                 }
4078         }
4079         end_problem_latch(ctx, PR_LATCH_BLOCK);
4080         end_problem_latch(ctx, PR_LATCH_TOOBIG);
4081         if (e2fsck_should_abort(ctx))
4082                 goto out;
4083         if (pctx->errcode)
4084                 fix_problem(ctx, PR_1_BLOCK_ITERATE, pctx);
4085
4086         if (pb.fragmented && pb.num_blocks < fs->super->s_blocks_per_group) {
4087                 if (LINUX_S_ISDIR(inode->i_mode))
4088                         ctx->fs_fragmented_dir++;
4089                 else
4090                         ctx->fs_fragmented++;
4091         }
4092
4093         if (pb.clear) {
4094                 e2fsck_clear_inode(ctx, ino, inode, E2F_FLAG_RESTART,
4095                                    "check_blocks");
4096                 return;
4097         }
4098
4099         if (inode->i_flags & EXT2_INDEX_FL) {
4100                 if (handle_htree(ctx, pctx, ino, inode, block_buf)) {
4101                         inode->i_flags &= ~EXT2_INDEX_FL;
4102                         dirty_inode++;
4103                 } else {
4104                         e2fsck_add_dx_dir(ctx, ino, inode, pb.last_block+1);
4105                 }
4106         }
4107
4108         if (!pb.num_blocks && pb.is_dir &&
4109             !(inode->i_flags & EXT4_INLINE_DATA_FL)) {
4110                 if (fix_problem(ctx, PR_1_ZERO_LENGTH_DIR, pctx)) {
4111                         e2fsck_clear_inode(ctx, ino, inode, 0, "check_blocks");
4112                         ctx->fs_directory_count--;
4113                         return;
4114                 }
4115         }
4116
4117         if (ino != quota_type2inum(PRJQUOTA, fs->super) &&
4118             (ino == EXT2_ROOT_INO || ino >= EXT2_FIRST_INODE(ctx->fs->super)) &&
4119             !(inode->i_flags & EXT4_EA_INODE_FL)) {
4120                 quota_data_add(ctx->qctx, (struct ext2_inode_large *) inode,
4121                                ino,
4122                                pb.num_blocks * EXT2_CLUSTER_SIZE(fs->super));
4123                 quota_data_inodes(ctx->qctx, (struct ext2_inode_large *) inode,
4124                                   ino, (ea_ibody_quota ?
4125                                         ea_ibody_quota->inodes : 0) +
4126                                                 ea_block_quota.inodes + 1);
4127         }
4128
4129         if (!ext2fs_has_feature_huge_file(fs->super) ||
4130             !(inode->i_flags & EXT4_HUGE_FILE_FL))
4131                 pb.num_blocks *= (fs->blocksize / 512);
4132         pb.num_blocks *= EXT2FS_CLUSTER_RATIO(fs);
4133 #if 0
4134         printf("inode %u, i_size = %u, last_block = %llu, i_blocks=%llu, num_blocks = %llu\n",
4135                ino, inode->i_size, (unsigned long long) pb.last_block,
4136                (unsigned long long) ext2fs_inode_i_blocks(fs, inode),
4137                (unsigned long long) pb.num_blocks);
4138 #endif
4139         size = EXT2_I_SIZE(inode);
4140         if (pb.is_dir) {
4141                 unsigned nblock = size >> EXT2_BLOCK_SIZE_BITS(fs->super);
4142                 if (inode->i_flags & EXT4_INLINE_DATA_FL) {
4143                         int flags;
4144                         size_t sz = 0;
4145                         errcode_t err;
4146
4147                         flags = ctx->fs->flags;
4148                         ctx->fs->flags |= EXT2_FLAG_IGNORE_CSUM_ERRORS;
4149                         err = ext2fs_inline_data_size(ctx->fs, pctx->ino,
4150                                                       &sz);
4151                         ctx->fs->flags = (flags &
4152                                           EXT2_FLAG_IGNORE_CSUM_ERRORS) |
4153                                          (ctx->fs->flags &
4154                                           ~EXT2_FLAG_IGNORE_CSUM_ERRORS);
4155                         if (err || sz != size) {
4156                                 bad_size = 7;
4157                                 pctx->num = sz;
4158                         }
4159                 } else if (size & (fs->blocksize - 1))
4160                         bad_size = 5;
4161                 else if (nblock > (pb.last_block + 1))
4162                         bad_size = 1;
4163                 else if (nblock < (pb.last_block + 1)) {
4164                         if (((pb.last_block + 1) - nblock) >
4165                             fs->super->s_prealloc_dir_blocks)
4166                                 bad_size = 2;
4167                 }
4168         } else {
4169                 if ((pb.last_init_lblock >= 0) &&
4170                     /* Do not allow initialized allocated blocks past i_size*/
4171                     (size < (__u64)pb.last_init_lblock * fs->blocksize) &&
4172                     !(inode->i_flags & EXT4_VERITY_FL))
4173                         bad_size = 3;
4174                 else if (!(extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) &&
4175                          size > ext2_max_sizes[fs->super->s_log_block_size])
4176                         /* too big for a direct/indirect-mapped file */
4177                         bad_size = 4;
4178                 else if ((extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) &&
4179                          size >
4180                          ((1ULL << (32 + EXT2_BLOCK_SIZE_BITS(fs->super))) - 1))
4181                         /* too big for an extent-based file - 32bit ee_block */
4182                         bad_size = 6;
4183         }
4184         /* i_size for symlinks is checked elsewhere */
4185         if (bad_size && !LINUX_S_ISLNK(inode->i_mode)) {
4186                 /* Did inline_data set pctx->num earlier? */
4187                 if (bad_size != 7)
4188                         pctx->num = (pb.last_block + 1) * fs->blocksize;
4189                 pctx->group = bad_size;
4190                 if (fix_problem(ctx, PR_1_BAD_I_SIZE, pctx)) {
4191                         ext2fs_inode_size_set(fs, inode, pctx->num);
4192                         if (EXT2_I_SIZE(inode) == 0 &&
4193                             (inode->i_flags & EXT4_INLINE_DATA_FL)) {
4194                                 memset(inode->i_block, 0,
4195                                        sizeof(inode->i_block));
4196                                 inode->i_flags &= ~EXT4_INLINE_DATA_FL;
4197                         }
4198                         dirty_inode++;
4199                 }
4200                 pctx->num = 0;
4201         }
4202         if (LINUX_S_ISREG(inode->i_mode) &&
4203             ext2fs_needs_large_file_feature(EXT2_I_SIZE(inode)))
4204                 ctx->large_files++;
4205         if ((fs->super->s_creator_os != EXT2_OS_HURD) &&
4206             ((pb.num_blocks != ext2fs_inode_i_blocks(fs, inode)) ||
4207              (ext2fs_has_feature_huge_file(fs->super) &&
4208               (inode->i_flags & EXT4_HUGE_FILE_FL) &&
4209               (inode->osd2.linux2.l_i_blocks_hi != 0)))) {
4210                 pctx->num = pb.num_blocks;
4211                 if (fix_problem(ctx, PR_1_BAD_I_BLOCKS, pctx)) {
4212                         inode->i_blocks = pb.num_blocks;
4213                         inode->osd2.linux2.l_i_blocks_hi = pb.num_blocks >> 32;
4214                         dirty_inode++;
4215                 }
4216                 pctx->num = 0;
4217         }
4218
4219         /*
4220          * The kernel gets mad if we ask it to allocate bigalloc clusters to
4221          * a block mapped file, so rebuild it as an extent file.  We can skip
4222          * symlinks because they're never rewritten.
4223          */
4224         if (ext2fs_has_feature_bigalloc(fs->super) &&
4225             (LINUX_S_ISREG(inode->i_mode) || LINUX_S_ISDIR(inode->i_mode)) &&
4226             ext2fs_inode_data_blocks2(fs, inode) > 0 &&
4227             (ino == EXT2_ROOT_INO || ino >= EXT2_FIRST_INO(fs->super)) &&
4228             !(inode->i_flags & (EXT4_EXTENTS_FL | EXT4_INLINE_DATA_FL)) &&
4229             fix_problem(ctx, PR_1_NO_BIGALLOC_BLOCKMAP_FILES, pctx)) {
4230                 pctx->errcode = e2fsck_rebuild_extents_later(ctx, ino);
4231                 if (pctx->errcode)
4232                         goto out;
4233         }
4234
4235         if (ctx->dirs_to_hash && pb.is_dir &&
4236             !(ctx->lost_and_found && ctx->lost_and_found == ino) &&
4237             !(inode->i_flags & EXT2_INDEX_FL) &&
4238             ((inode->i_size / fs->blocksize) >= 3))
4239                 e2fsck_rehash_dir_later(ctx, ino);
4240
4241 out:
4242         if (dirty_inode)
4243                 e2fsck_write_inode(ctx, ino, inode, "check_blocks");
4244 }
4245
4246 #if 0
4247 /*
4248  * Helper function called by process block when an illegal block is
4249  * found.  It returns a description about why the block is illegal
4250  */
4251 static char *describe_illegal_block(ext2_filsys fs, blk64_t block)
4252 {
4253         blk64_t super;
4254         int     i;
4255         static char     problem[80];
4256
4257         super = fs->super->s_first_data_block;
4258         strcpy(problem, "PROGRAMMING ERROR: Unknown reason for illegal block");
4259         if (block < super) {
4260                 sprintf(problem, "< FIRSTBLOCK (%u)", super);
4261                 return(problem);
4262         } else if (block >= ext2fs_blocks_count(fs->super)) {
4263                 sprintf(problem, "> BLOCKS (%u)", ext2fs_blocks_count(fs->super));
4264                 return(problem);
4265         }
4266         for (i = 0; i < fs->group_desc_count; i++) {
4267                 if (block == super) {
4268                         sprintf(problem, "is the superblock in group %d", i);
4269                         break;
4270                 }
4271                 if (block > super &&
4272                     block <= (super + fs->desc_blocks)) {
4273                         sprintf(problem, "is in the group descriptors "
4274                                 "of group %d", i);
4275                         break;
4276                 }
4277                 if (block == ext2fs_block_bitmap_loc(fs, i)) {
4278                         sprintf(problem, "is the block bitmap of group %d", i);
4279                         break;
4280                 }
4281                 if (block == ext2fs_inode_bitmap_loc(fs, i)) {
4282                         sprintf(problem, "is the inode bitmap of group %d", i);
4283                         break;
4284                 }
4285                 if (block >= ext2fs_inode_table_loc(fs, i) &&
4286                     (block < ext2fs_inode_table_loc(fs, i)
4287                      + fs->inode_blocks_per_group)) {
4288                         sprintf(problem, "is in the inode table of group %d",
4289                                 i);
4290                         break;
4291                 }
4292                 super += fs->super->s_blocks_per_group;
4293         }
4294         return(problem);
4295 }
4296 #endif
4297
4298 /*
4299  * This is a helper function for check_blocks().
4300  */
4301 static int process_block(ext2_filsys fs,
4302                   blk64_t       *block_nr,
4303                   e2_blkcnt_t blockcnt,
4304                   blk64_t ref_block EXT2FS_ATTR((unused)),
4305                   int ref_offset EXT2FS_ATTR((unused)),
4306                   void *priv_data)
4307 {
4308         struct process_block_struct *p;
4309         struct problem_context *pctx;
4310         blk64_t blk = *block_nr;
4311         int     ret_code = 0;
4312         problem_t       problem = 0;
4313         e2fsck_t        ctx;
4314
4315         p = (struct process_block_struct *) priv_data;
4316         pctx = p->pctx;
4317         ctx = p->ctx;
4318
4319         /*
4320          * For a directory, add logical block zero for processing even if it's
4321          * not mapped or we'll be perennially stuck with broken "." and ".."
4322          * entries.
4323          */
4324         if (p->is_dir && blockcnt == 0 && blk == 0) {
4325                 pctx->errcode = ext2fs_add_dir_block2(fs->dblist, p->ino, 0, 0);
4326                 if (pctx->errcode) {
4327                         pctx->blk = blk;
4328                         pctx->num = blockcnt;
4329                         goto failed_add_dir_block;
4330                 }
4331                 p->last_db_block++;
4332         }
4333
4334         if (blk == 0)
4335                 return 0;
4336
4337 #if 0
4338         printf("Process_block, inode %lu, block %u, #%d\n", p->ino, blk,
4339                blockcnt);
4340 #endif
4341
4342         /*
4343          * Simplistic fragmentation check.  We merely require that the
4344          * file be contiguous.  (Which can never be true for really
4345          * big files that are greater than a block group.)
4346          */
4347         if (p->previous_block && p->ino != EXT2_RESIZE_INO) {
4348                 if (p->previous_block+1 != blk) {
4349                         if (ctx->options & E2F_OPT_FRAGCHECK) {
4350                                 char type = '?';
4351
4352                                 if (p->is_dir)
4353                                         type = 'd';
4354                                 else if (p->is_reg)
4355                                         type = 'f';
4356
4357                                 printf(_("%6lu(%c): expecting %6lu "
4358                                          "got phys %6lu (blkcnt %lld)\n"),
4359                                        (unsigned long) pctx->ino, type,
4360                                        (unsigned long) p->previous_block+1,
4361                                        (unsigned long) blk,
4362                                        (long long) blockcnt);
4363                         }
4364                         p->fragmented = 1;
4365                 }
4366         }
4367
4368         if (p->is_dir && !ext2fs_has_feature_largedir(fs->super) &&
4369             !pctx->inode->i_size_high &&
4370             blockcnt > (1 << (21 - fs->super->s_log_block_size)))
4371                 problem = PR_1_TOOBIG_DIR;
4372         if (p->is_dir && p->num_blocks + 1 >= p->max_blocks)
4373                 problem = PR_1_TOOBIG_DIR;
4374         if (p->is_reg && p->num_blocks + 1 >= p->max_blocks)
4375                 problem = PR_1_TOOBIG_REG;
4376         if (!p->is_dir && !p->is_reg && blockcnt > 0)
4377                 problem = PR_1_TOOBIG_SYMLINK;
4378
4379         if (blk < fs->super->s_first_data_block ||
4380             blk >= ext2fs_blocks_count(fs->super))
4381                 problem = PR_1_ILLEGAL_BLOCK_NUM;
4382
4383         /*
4384          * If this IND/DIND/TIND block is squatting atop some critical metadata
4385          * (group descriptors, superblock, bitmap, inode table), any write to
4386          * "fix" mapping problems will destroy the metadata.  We'll let pass 1b
4387          * fix that and restart fsck.
4388          */
4389         if (blockcnt < 0 &&
4390             p->ino != EXT2_RESIZE_INO &&
4391             blk < ctx->fs->super->s_blocks_count &&
4392             ext2fs_test_block_bitmap2(ctx->block_metadata_map, blk)) {
4393                 pctx->blk = blk;
4394                 fix_problem(ctx, PR_1_CRITICAL_METADATA_COLLISION, pctx);
4395                 if ((ctx->options & E2F_OPT_NO) == 0)
4396                         ctx->flags |= E2F_FLAG_RESTART_LATER;
4397         }
4398
4399         if (problem) {
4400                 p->num_illegal_blocks++;
4401                 /*
4402                  * A bit of subterfuge here -- we're trying to fix a block
4403                  * mapping, but the IND/DIND/TIND block could have collided
4404                  * with some critical metadata.  So, fix the in-core mapping so
4405                  * iterate won't go insane, but return 0 instead of
4406                  * BLOCK_CHANGED so that it won't write the remapping out to
4407                  * our multiply linked block.
4408                  *
4409                  * Even if we previously determined that an *IND block
4410                  * conflicts with critical metadata, we must still try to
4411                  * iterate the *IND block as if it is an *IND block to find and
4412                  * mark the blocks it points to.  Better to be overly cautious
4413                  * with the used_blocks map so that we don't move the *IND
4414                  * block to a block that's really in use!
4415                  */
4416                 if (p->ino != EXT2_RESIZE_INO &&
4417                     ref_block != 0 &&
4418                     ext2fs_test_block_bitmap2(ctx->block_metadata_map,
4419                                               ref_block)) {
4420                         *block_nr = 0;
4421                         return 0;
4422                 }
4423                 if (!p->suppress && (p->num_illegal_blocks % 12) == 0) {
4424                         if (fix_problem(ctx, PR_1_TOO_MANY_BAD_BLOCKS, pctx)) {
4425                                 p->clear = 1;
4426                                 return BLOCK_ABORT;
4427                         }
4428                         if (fix_problem(ctx, PR_1_SUPPRESS_MESSAGES, pctx)) {
4429                                 p->suppress = 1;
4430                                 set_latch_flags(PR_LATCH_BLOCK,
4431                                                 PRL_SUPPRESS, 0);
4432                         }
4433                 }
4434                 pctx->blk = blk;
4435                 pctx->blkcount = blockcnt;
4436                 if (fix_problem(ctx, problem, pctx)) {
4437                         blk = *block_nr = 0;
4438                         ret_code = BLOCK_CHANGED;
4439                         p->inode_modified = 1;
4440                         /*
4441                          * If the directory block is too big and is beyond the
4442                          * end of the FS, don't bother trying to add it for
4443                          * processing -- the kernel would never have created a
4444                          * directory this large, and we risk an ENOMEM abort.
4445                          * In any case, the toobig handler for extent-based
4446                          * directories also doesn't feed toobig blocks to
4447                          * pass 2.
4448                          */
4449                         if (problem == PR_1_TOOBIG_DIR)
4450                                 return ret_code;
4451                         goto mark_dir;
4452                 } else
4453                         return 0;
4454         }
4455
4456         if (p->ino == EXT2_RESIZE_INO) {
4457                 /*
4458                  * The resize inode has already be sanity checked
4459                  * during pass #0 (the superblock checks).  All we
4460                  * have to do is mark the double indirect block as
4461                  * being in use; all of the other blocks are handled
4462                  * by mark_table_blocks()).
4463                  */
4464                 if (blockcnt == BLOCK_COUNT_DIND)
4465                         mark_block_used(ctx, blk);
4466                 p->num_blocks++;
4467         } else if (!(ctx->fs->cluster_ratio_bits &&
4468                      p->previous_block &&
4469                      (EXT2FS_B2C(ctx->fs, blk) ==
4470                       EXT2FS_B2C(ctx->fs, p->previous_block)) &&
4471                      (blk & EXT2FS_CLUSTER_MASK(ctx->fs)) ==
4472                      ((unsigned) blockcnt & EXT2FS_CLUSTER_MASK(ctx->fs)))) {
4473                 mark_block_used(ctx, blk);
4474                 p->num_blocks++;
4475         } else if (has_unaligned_cluster_map(ctx, p->previous_block,
4476                                              p->last_block, blk, blockcnt)) {
4477                 pctx->blk = blockcnt;
4478                 pctx->blk2 = blk;
4479                 fix_problem(ctx, PR_1_MISALIGNED_CLUSTER, pctx);
4480                 mark_block_used(ctx, blk);
4481                 mark_block_used(ctx, blk);
4482         }
4483         if (blockcnt >= 0)
4484                 p->last_block = blockcnt;
4485         p->previous_block = blk;
4486 mark_dir:
4487         if (p->is_dir && (blockcnt >= 0)) {
4488                 while (++p->last_db_block < blockcnt) {
4489                         pctx->errcode = ext2fs_add_dir_block2(fs->dblist,
4490                                                               p->ino, 0,
4491                                                               p->last_db_block);
4492                         if (pctx->errcode) {
4493                                 pctx->blk = 0;
4494                                 pctx->num = p->last_db_block;
4495                                 goto failed_add_dir_block;
4496                         }
4497                 }
4498                 pctx->errcode = ext2fs_add_dir_block2(fs->dblist, p->ino,
4499                                                       blk, blockcnt);
4500                 if (pctx->errcode) {
4501                         pctx->blk = blk;
4502                         pctx->num = blockcnt;
4503                 failed_add_dir_block:
4504                         fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
4505                         /* Should never get here */
4506                         ctx->flags |= E2F_FLAG_ABORT;
4507                         return BLOCK_ABORT;
4508                 }
4509         }
4510         return ret_code;
4511 }
4512
4513 static int process_bad_block(ext2_filsys fs,
4514                       blk64_t *block_nr,
4515                       e2_blkcnt_t blockcnt,
4516                       blk64_t ref_block EXT2FS_ATTR((unused)),
4517                       int ref_offset EXT2FS_ATTR((unused)),
4518                       void *priv_data)
4519 {
4520         struct process_block_struct *p;
4521         blk64_t         blk = *block_nr;
4522         blk64_t         first_block;
4523         dgrp_t          i;
4524         struct problem_context *pctx;
4525         e2fsck_t        ctx;
4526
4527         if (!blk)
4528                 return 0;
4529
4530         p = (struct process_block_struct *) priv_data;
4531         ctx = p->ctx;
4532         pctx = p->pctx;
4533
4534         pctx->ino = EXT2_BAD_INO;
4535         pctx->blk = blk;
4536         pctx->blkcount = blockcnt;
4537
4538         if ((blk < fs->super->s_first_data_block) ||
4539             (blk >= ext2fs_blocks_count(fs->super))) {
4540                 if (fix_problem(ctx, PR_1_BB_ILLEGAL_BLOCK_NUM, pctx)) {
4541                         *block_nr = 0;
4542                         return BLOCK_CHANGED;
4543                 } else
4544                         return 0;
4545         }
4546
4547         if (blockcnt < 0) {
4548                 if (ext2fs_test_block_bitmap2(p->fs_meta_blocks, blk)) {
4549                         p->bbcheck = 1;
4550                         if (fix_problem(ctx, PR_1_BB_FS_BLOCK, pctx)) {
4551                                 *block_nr = 0;
4552                                 return BLOCK_CHANGED;
4553                         }
4554                 } else if (ext2fs_test_block_bitmap2(ctx->block_found_map,
4555                                                     blk)) {
4556                         p->bbcheck = 1;
4557                         if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK,
4558                                         pctx)) {
4559                                 *block_nr = 0;
4560                                 return BLOCK_CHANGED;
4561                         }
4562                         if (e2fsck_should_abort(ctx))
4563                                 return BLOCK_ABORT;
4564                 } else
4565                         mark_block_used(ctx, blk);
4566                 return 0;
4567         }
4568 #if 0
4569         printf ("DEBUG: Marking %u as bad.\n", blk);
4570 #endif
4571         ctx->fs_badblocks_count++;
4572         /*
4573          * If the block is not used, then mark it as used and return.
4574          * If it is already marked as found, this must mean that
4575          * there's an overlap between the filesystem table blocks
4576          * (bitmaps and inode table) and the bad block list.
4577          */
4578         if (!ext2fs_test_block_bitmap2(ctx->block_found_map, blk)) {
4579                 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
4580                 return 0;
4581         }
4582         /*
4583          * Try to find the where the filesystem block was used...
4584          */
4585         first_block = fs->super->s_first_data_block;
4586
4587         for (i = 0; i < fs->group_desc_count; i++ ) {
4588                 pctx->group = i;
4589                 pctx->blk = blk;
4590                 if (!ext2fs_bg_has_super(fs, i))
4591                         goto skip_super;
4592                 if (blk == first_block) {
4593                         if (i == 0) {
4594                                 if (fix_problem(ctx,
4595                                                 PR_1_BAD_PRIMARY_SUPERBLOCK,
4596                                                 pctx)) {
4597                                         *block_nr = 0;
4598                                         return BLOCK_CHANGED;
4599                                 }
4600                                 return 0;
4601                         }
4602                         fix_problem(ctx, PR_1_BAD_SUPERBLOCK, pctx);
4603                         return 0;
4604                 }
4605                 if ((blk > first_block) &&
4606                     (blk <= first_block + fs->desc_blocks)) {
4607                         if (i == 0) {
4608                                 pctx->blk = *block_nr;
4609                                 if (fix_problem(ctx,
4610                         PR_1_BAD_PRIMARY_GROUP_DESCRIPTOR, pctx)) {
4611                                         *block_nr = 0;
4612                                         return BLOCK_CHANGED;
4613                                 }
4614                                 return 0;
4615                         }
4616                         fix_problem(ctx, PR_1_BAD_GROUP_DESCRIPTORS, pctx);
4617                         return 0;
4618                 }
4619         skip_super:
4620                 if (blk == ext2fs_block_bitmap_loc(fs, i)) {
4621                         if (fix_problem(ctx, PR_1_BB_BAD_BLOCK, pctx)) {
4622                                 ctx->invalid_block_bitmap_flag[i]++;
4623                                 ctx->invalid_bitmaps++;
4624                         }
4625                         return 0;
4626                 }
4627                 if (blk == ext2fs_inode_bitmap_loc(fs, i)) {
4628                         if (fix_problem(ctx, PR_1_IB_BAD_BLOCK, pctx)) {
4629                                 ctx->invalid_inode_bitmap_flag[i]++;
4630                                 ctx->invalid_bitmaps++;
4631                         }
4632                         return 0;
4633                 }
4634                 if ((blk >= ext2fs_inode_table_loc(fs, i)) &&
4635                     (blk < (ext2fs_inode_table_loc(fs, i) +
4636                             fs->inode_blocks_per_group))) {
4637                         /*
4638                          * If there are bad blocks in the inode table,
4639                          * the inode scan code will try to do
4640                          * something reasonable automatically.
4641                          */
4642                         return 0;
4643                 }
4644                 first_block += fs->super->s_blocks_per_group;
4645         }
4646         /*
4647          * If we've gotten to this point, then the only
4648          * possibility is that the bad block inode meta data
4649          * is using a bad block.
4650          */
4651         if ((blk == p->inode->i_block[EXT2_IND_BLOCK]) ||
4652             (blk == p->inode->i_block[EXT2_DIND_BLOCK]) ||
4653             (blk == p->inode->i_block[EXT2_TIND_BLOCK])) {
4654                 p->bbcheck = 1;
4655                 if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK, pctx)) {
4656                         *block_nr = 0;
4657                         return BLOCK_CHANGED;
4658                 }
4659                 if (e2fsck_should_abort(ctx))
4660                         return BLOCK_ABORT;
4661                 return 0;
4662         }
4663
4664         pctx->group = -1;
4665
4666         /* Warn user that the block wasn't claimed */
4667         fix_problem(ctx, PR_1_PROGERR_CLAIMED_BLOCK, pctx);
4668
4669         return 0;
4670 }
4671
4672 static void new_table_block(e2fsck_t ctx, blk64_t first_block, dgrp_t group,
4673                             const char *name, int num, blk64_t *new_block)
4674 {
4675         ext2_filsys fs = ctx->fs;
4676         dgrp_t          last_grp;
4677         blk64_t         old_block = *new_block;
4678         blk64_t         last_block;
4679         dgrp_t          flexbg;
4680         unsigned        flexbg_size;
4681         int             i, is_flexbg;
4682         char            *buf;
4683         struct problem_context  pctx;
4684
4685         clear_problem_context(&pctx);
4686
4687         pctx.group = group;
4688         pctx.blk = old_block;
4689         pctx.str = name;
4690
4691         /*
4692          * For flex_bg filesystems, first try to allocate the metadata
4693          * within the flex_bg, and if that fails then try finding the
4694          * space anywhere in the filesystem.
4695          */
4696         is_flexbg = ext2fs_has_feature_flex_bg(fs->super);
4697         if (is_flexbg) {
4698                 flexbg_size = 1U << fs->super->s_log_groups_per_flex;
4699                 flexbg = group / flexbg_size;
4700                 first_block = ext2fs_group_first_block2(fs,
4701                                                         flexbg_size * flexbg);
4702                 last_grp = group | (flexbg_size - 1);
4703                 if (last_grp >= fs->group_desc_count)
4704                         last_grp = fs->group_desc_count - 1;
4705                 last_block = ext2fs_group_last_block2(fs, last_grp);
4706         } else
4707                 last_block = ext2fs_group_last_block2(fs, group);
4708         pctx.errcode = ext2fs_get_free_blocks2(fs, first_block, last_block,
4709                                                num, ctx->block_found_map,
4710                                                new_block);
4711         if (is_flexbg && (pctx.errcode == EXT2_ET_BLOCK_ALLOC_FAIL))
4712                 pctx.errcode = ext2fs_get_free_blocks2(fs,
4713                                 fs->super->s_first_data_block,
4714                                 ext2fs_blocks_count(fs->super),
4715                                 num, ctx->block_found_map, new_block);
4716         if (pctx.errcode) {
4717                 pctx.num = num;
4718                 fix_problem(ctx, PR_1_RELOC_BLOCK_ALLOCATE, &pctx);
4719                 ext2fs_unmark_valid(fs);
4720                 ctx->flags |= E2F_FLAG_ABORT;
4721                 return;
4722         }
4723         pctx.errcode = ext2fs_get_mem(fs->blocksize, &buf);
4724         if (pctx.errcode) {
4725                 fix_problem(ctx, PR_1_RELOC_MEMORY_ALLOCATE, &pctx);
4726                 ext2fs_unmark_valid(fs);
4727                 ctx->flags |= E2F_FLAG_ABORT;
4728                 return;
4729         }
4730         ext2fs_mark_super_dirty(fs);
4731         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
4732         pctx.blk2 = *new_block;
4733         fix_problem(ctx, (old_block ? PR_1_RELOC_FROM_TO :
4734                           PR_1_RELOC_TO), &pctx);
4735         pctx.blk2 = 0;
4736         for (i = 0; i < num; i++) {
4737                 pctx.blk = i;
4738                 ext2fs_mark_block_bitmap2(ctx->block_found_map, (*new_block)+i);
4739                 if (old_block) {
4740                         pctx.errcode = io_channel_read_blk64(fs->io,
4741                                    old_block + i, 1, buf);
4742                         if (pctx.errcode)
4743                                 fix_problem(ctx, PR_1_RELOC_READ_ERR, &pctx);
4744                         pctx.blk = (*new_block) + i;
4745                         pctx.errcode = io_channel_write_blk64(fs->io, pctx.blk,
4746                                                               1, buf);
4747                 } else {
4748                         pctx.blk = (*new_block) + i;
4749                         pctx.errcode = ext2fs_zero_blocks2(fs, pctx.blk, 1,
4750                                                            NULL, NULL);
4751                 }
4752
4753                 if (pctx.errcode)
4754                         fix_problem(ctx, PR_1_RELOC_WRITE_ERR, &pctx);
4755         }
4756         ext2fs_free_mem(&buf);
4757 }
4758
4759 /*
4760  * This routine gets called at the end of pass 1 if bad blocks are
4761  * detected in the superblock, group descriptors, inode_bitmaps, or
4762  * block bitmaps.  At this point, all of the blocks have been mapped
4763  * out, so we can try to allocate new block(s) to replace the bad
4764  * blocks.
4765  */
4766 static void handle_fs_bad_blocks(e2fsck_t ctx)
4767 {
4768         ext2_filsys fs = ctx->fs;
4769         dgrp_t          i;
4770         blk64_t         first_block;
4771         blk64_t         new_blk;
4772
4773         for (i = 0; i < fs->group_desc_count; i++) {
4774                 first_block = ext2fs_group_first_block2(fs, i);
4775
4776                 if (ctx->invalid_block_bitmap_flag[i]) {
4777                         new_blk = ext2fs_block_bitmap_loc(fs, i);
4778                         new_table_block(ctx, first_block, i, _("block bitmap"),
4779                                         1, &new_blk);
4780                         ext2fs_block_bitmap_loc_set(fs, i, new_blk);
4781                 }
4782                 if (ctx->invalid_inode_bitmap_flag[i]) {
4783                         new_blk = ext2fs_inode_bitmap_loc(fs, i);
4784                         new_table_block(ctx, first_block, i, _("inode bitmap"),
4785                                         1, &new_blk);
4786                         ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
4787                 }
4788                 if (ctx->invalid_inode_table_flag[i]) {
4789                         new_blk = ext2fs_inode_table_loc(fs, i);
4790                         new_table_block(ctx, first_block, i, _("inode table"),
4791                                         fs->inode_blocks_per_group,
4792                                         &new_blk);
4793                         ext2fs_inode_table_loc_set(fs, i, new_blk);
4794                         ctx->flags |= E2F_FLAG_RESTART;
4795                 }
4796         }
4797         ctx->invalid_bitmaps = 0;
4798 }
4799
4800 /*
4801  * This routine marks all blocks which are used by the superblock,
4802  * group descriptors, inode bitmaps, and block bitmaps.
4803  */
4804 static void mark_table_blocks(e2fsck_t ctx)
4805 {
4806         ext2_filsys fs = ctx->fs;
4807         blk64_t b;
4808         dgrp_t  i;
4809         unsigned int    j;
4810         struct problem_context pctx;
4811
4812         clear_problem_context(&pctx);
4813
4814         for (i = 0; i < fs->group_desc_count; i++) {
4815                 pctx.group = i;
4816
4817                 ext2fs_reserve_super_and_bgd(fs, i, ctx->block_found_map);
4818                 ext2fs_reserve_super_and_bgd(fs, i, ctx->block_metadata_map);
4819
4820                 /*
4821                  * Mark the blocks used for the inode table
4822                  */
4823                 if (ext2fs_inode_table_loc(fs, i)) {
4824                         for (j = 0, b = ext2fs_inode_table_loc(fs, i);
4825                              j < fs->inode_blocks_per_group;
4826                              j++, b++) {
4827                                 if (ext2fs_test_block_bitmap2(ctx->block_found_map,
4828                                                              b)) {
4829                                         pctx.blk = b;
4830                                         if (!ctx->invalid_inode_table_flag[i] &&
4831                                             fix_problem(ctx,
4832                                                 PR_1_ITABLE_CONFLICT, &pctx)) {
4833                                                 ctx->invalid_inode_table_flag[i]++;
4834                                                 ctx->invalid_bitmaps++;
4835                                         }
4836                                 } else {
4837                                     ext2fs_mark_block_bitmap2(
4838                                                 ctx->block_found_map, b);
4839                                     ext2fs_mark_block_bitmap2(
4840                                                 ctx->block_metadata_map, b);
4841                                 }
4842                         }
4843                 }
4844
4845                 /*
4846                  * Mark block used for the block bitmap
4847                  */
4848                 if (ext2fs_block_bitmap_loc(fs, i)) {
4849                         if (ext2fs_test_block_bitmap2(ctx->block_found_map,
4850                                      ext2fs_block_bitmap_loc(fs, i))) {
4851                                 pctx.blk = ext2fs_block_bitmap_loc(fs, i);
4852                                 if (fix_problem(ctx, PR_1_BB_CONFLICT, &pctx)) {
4853                                         ctx->invalid_block_bitmap_flag[i]++;
4854                                         ctx->invalid_bitmaps++;
4855                                 }
4856                         } else {
4857                             ext2fs_mark_block_bitmap2(ctx->block_found_map,
4858                                      ext2fs_block_bitmap_loc(fs, i));
4859                             ext2fs_mark_block_bitmap2(ctx->block_metadata_map,
4860                                      ext2fs_block_bitmap_loc(fs, i));
4861                         }
4862                 }
4863                 /*
4864                  * Mark block used for the inode bitmap
4865                  */
4866                 if (ext2fs_inode_bitmap_loc(fs, i)) {
4867                         if (ext2fs_test_block_bitmap2(ctx->block_found_map,
4868                                      ext2fs_inode_bitmap_loc(fs, i))) {
4869                                 pctx.blk = ext2fs_inode_bitmap_loc(fs, i);
4870                                 if (fix_problem(ctx, PR_1_IB_CONFLICT, &pctx)) {
4871                                         ctx->invalid_inode_bitmap_flag[i]++;
4872                                         ctx->invalid_bitmaps++;
4873                                 }
4874                         } else {
4875                             ext2fs_mark_block_bitmap2(ctx->block_metadata_map,
4876                                      ext2fs_inode_bitmap_loc(fs, i));
4877                             ext2fs_mark_block_bitmap2(ctx->block_found_map,
4878                                      ext2fs_inode_bitmap_loc(fs, i));
4879                         }
4880                 }
4881         }
4882 }
4883
4884 /*
4885  * These subroutines short circuits ext2fs_get_blocks and
4886  * ext2fs_check_directory; we use them since we already have the inode
4887  * structure, so there's no point in letting the ext2fs library read
4888  * the inode again.
4889  */
4890 static errcode_t pass1_get_blocks(ext2_filsys fs, ext2_ino_t ino,
4891                                   blk_t *blocks)
4892 {
4893         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4894         int     i;
4895
4896         if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
4897                 return EXT2_ET_CALLBACK_NOTHANDLED;
4898
4899         for (i=0; i < EXT2_N_BLOCKS; i++)
4900                 blocks[i] = ctx->stashed_inode->i_block[i];
4901         return 0;
4902 }
4903
4904 static errcode_t pass1_read_inode(ext2_filsys fs, ext2_ino_t ino,
4905                                   struct ext2_inode *inode)
4906 {
4907         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4908
4909         if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
4910                 return EXT2_ET_CALLBACK_NOTHANDLED;
4911         *inode = *ctx->stashed_inode;
4912         return 0;
4913 }
4914
4915 static errcode_t pass1_write_inode(ext2_filsys fs, ext2_ino_t ino,
4916                             struct ext2_inode *inode)
4917 {
4918         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4919
4920         if ((ino == ctx->stashed_ino) && ctx->stashed_inode &&
4921                 (inode != ctx->stashed_inode))
4922                 *ctx->stashed_inode = *inode;
4923         return EXT2_ET_CALLBACK_NOTHANDLED;
4924 }
4925
4926 static errcode_t pass1_check_directory(ext2_filsys fs, ext2_ino_t ino)
4927 {
4928         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4929
4930         if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
4931                 return EXT2_ET_CALLBACK_NOTHANDLED;
4932
4933         if (!LINUX_S_ISDIR(ctx->stashed_inode->i_mode))
4934                 return EXT2_ET_NO_DIRECTORY;
4935         return 0;
4936 }
4937
4938 static errcode_t e2fsck_get_alloc_block(ext2_filsys fs, blk64_t goal,
4939                                         blk64_t *ret)
4940 {
4941         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4942         errcode_t       retval;
4943         blk64_t         new_block;
4944
4945         if (ctx->block_found_map) {
4946                 retval = ext2fs_new_block2(fs, goal, ctx->block_found_map,
4947                                            &new_block);
4948                 if (retval)
4949                         return retval;
4950                 if (fs->block_map) {
4951                         ext2fs_mark_block_bitmap2(fs->block_map, new_block);
4952                         ext2fs_mark_bb_dirty(fs);
4953                 }
4954         } else {
4955                 if (!fs->block_map) {
4956                         retval = ext2fs_read_block_bitmap(fs);
4957                         if (retval)
4958                                 return retval;
4959                 }
4960
4961                 retval = ext2fs_new_block2(fs, goal, fs->block_map, &new_block);
4962                 if (retval)
4963                         return retval;
4964         }
4965
4966         *ret = new_block;
4967         return (0);
4968 }
4969
4970 static errcode_t e2fsck_new_range(ext2_filsys fs, int flags, blk64_t goal,
4971                                   blk64_t len, blk64_t *pblk, blk64_t *plen)
4972 {
4973         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4974         errcode_t       retval;
4975
4976         if (ctx->block_found_map)
4977                 return ext2fs_new_range(fs, flags, goal, len,
4978                                         ctx->block_found_map, pblk, plen);
4979
4980         if (!fs->block_map) {
4981                 retval = ext2fs_read_block_bitmap(fs);
4982                 if (retval)
4983                         return retval;
4984         }
4985
4986         return ext2fs_new_range(fs, flags, goal, len, fs->block_map,
4987                                 pblk, plen);
4988 }
4989
4990 static void e2fsck_block_alloc_stats(ext2_filsys fs, blk64_t blk, int inuse)
4991 {
4992         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
4993
4994         /* Never free a critical metadata block */
4995         if (ctx->block_found_map &&
4996             ctx->block_metadata_map &&
4997             inuse < 0 &&
4998             ext2fs_test_block_bitmap2(ctx->block_metadata_map, blk))
4999                 return;
5000
5001         if (ctx->block_found_map) {
5002                 if (inuse > 0)
5003                         ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
5004                 else
5005                         ext2fs_unmark_block_bitmap2(ctx->block_found_map, blk);
5006         }
5007 }
5008
5009 static void e2fsck_block_alloc_stats_range(ext2_filsys fs, blk64_t blk,
5010                                            blk_t num, int inuse)
5011 {
5012         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
5013
5014         /* Never free a critical metadata block */
5015         if (ctx->block_found_map &&
5016             ctx->block_metadata_map &&
5017             inuse < 0 &&
5018             ext2fs_test_block_bitmap_range2(ctx->block_metadata_map, blk, num))
5019                 return;
5020
5021         if (ctx->block_found_map) {
5022                 if (inuse > 0)
5023                         ext2fs_mark_block_bitmap_range2(ctx->block_found_map,
5024                                                         blk, num);
5025                 else
5026                         ext2fs_unmark_block_bitmap_range2(ctx->block_found_map,
5027                                                         blk, num);
5028         }
5029 }
5030
5031 void e2fsck_use_inode_shortcuts(e2fsck_t ctx, int use_shortcuts)
5032 {
5033         ext2_filsys fs = ctx->fs;
5034
5035         if (use_shortcuts) {
5036                 fs->get_blocks = pass1_get_blocks;
5037                 fs->check_directory = pass1_check_directory;
5038                 fs->read_inode = pass1_read_inode;
5039                 fs->write_inode = pass1_write_inode;
5040                 ctx->stashed_ino = 0;
5041         } else {
5042                 fs->get_blocks = 0;
5043                 fs->check_directory = 0;
5044                 fs->read_inode = 0;
5045                 fs->write_inode = 0;
5046         }
5047 }
5048
5049 void e2fsck_intercept_block_allocations(e2fsck_t ctx)
5050 {
5051         ext2fs_set_alloc_block_callback(ctx->fs, e2fsck_get_alloc_block, 0);
5052         ext2fs_set_block_alloc_stats_callback(ctx->fs,
5053                                                 e2fsck_block_alloc_stats, 0);
5054         ext2fs_set_new_range_callback(ctx->fs, e2fsck_new_range, NULL);
5055         ext2fs_set_block_alloc_stats_range_callback(ctx->fs,
5056                                         e2fsck_block_alloc_stats_range, NULL);
5057 }