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 blocks are in use.          (block_found_map)
  27  *      - A bitmap of which blocks are in use by two inodes     (block_dup_map)
  28  *      - The data blocks of the directory inodes.      (dir_map)
  29  *
  30  * Pass 1 is designed to stash away enough information so that the
  31  * other passes should not need to read in the inode information
  32  * during the normal course of a filesystem check.  (Althogh if an
  33  * inconsistency is detected, other passes may need to read in an
  34  * inode to fix it.)
  35  *
  36  * Note that pass 1B will be invoked if there are any duplicate blocks
  37  * found.
  38  */
  39
  40 #define _GNU_SOURCE 1 /* get strnlen() */
  41 #include "config.h"
  42 #include <string.h>
  43 #include <time.h>
  44 #ifdef HAVE_ERRNO_H
  45 #include <errno.h>
  46 #endif
  47
  48 #include "e2fsck.h"
  49 #include <ext2fs/ext2_ext_attr.h>
  50
  51 #include "problem.h"
  52
  53 #ifdef NO_INLINE_FUNCS
  54 #define _INLINE_
  55 #else
  56 #define _INLINE_ inline
  57 #endif
  58
  59 static int process_block(ext2_filsys fs, blk64_t        *blocknr,
  60                          e2_blkcnt_t blockcnt, blk64_t ref_blk,
  61                          int ref_offset, void *priv_data);
  62 static int process_bad_block(ext2_filsys fs, blk64_t *block_nr,
  63                              e2_blkcnt_t blockcnt, blk64_t ref_blk,
  64                              int ref_offset, void *priv_data);
  65 static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
  66                          char *block_buf);
  67 static void mark_table_blocks(e2fsck_t ctx);
  68 static void alloc_bb_map(e2fsck_t ctx);
  69 static void alloc_imagic_map(e2fsck_t ctx);
  70 static void mark_inode_bad(e2fsck_t ctx, ino_t ino);
  71 static void handle_fs_bad_blocks(e2fsck_t ctx);
  72 static void process_inodes(e2fsck_t ctx, char *block_buf);
  73 static EXT2_QSORT_TYPE process_inode_cmp(const void *a, const void *b);
  74 static errcode_t scan_callback(ext2_filsys fs, ext2_inode_scan scan,
  75                                   dgrp_t group, void * priv_data);
  76 static void adjust_extattr_refcount(e2fsck_t ctx, ext2_refcount_t refcount,
  77                                     char *block_buf, int adjust_sign);
  78 /* static char *describe_illegal_block(ext2_filsys fs, blk64_t block); */
  79
  80 struct process_block_struct {
  81         ext2_ino_t      ino;
  82         unsigned        is_dir:1, is_reg:1, clear:1, suppress:1,
  83                                 fragmented:1, compressed:1, bbcheck:1;
  84         blk64_t         num_blocks;
  85         blk64_t         max_blocks;
  86         e2_blkcnt_t     last_block;
  87         e2_blkcnt_t     last_init_lblock;
  88         e2_blkcnt_t     last_db_block;
  89         int             num_illegal_blocks;
  90         blk64_t         previous_block;
  91         struct ext2_inode *inode;
  92         struct problem_context *pctx;
  93         ext2fs_block_bitmap fs_meta_blocks;
  94         e2fsck_t        ctx;
  95 };
  96
  97 struct process_inode_block {
  98         ext2_ino_t ino;
  99         struct ext2_inode inode;
 100 };
 101
 102 struct scan_callback_struct {
 103         e2fsck_t        ctx;
 104         char            *block_buf;
 105 };
 106
 107 /*
 108  * For the inodes to process list.
 109  */
 110 static struct process_inode_block *inodes_to_process;
 111 static int process_inode_count;
 112
 113 static __u64 ext2_max_sizes[EXT2_MAX_BLOCK_LOG_SIZE -
 114                             EXT2_MIN_BLOCK_LOG_SIZE + 1];
 115
 116 /*
 117  * Free all memory allocated by pass1 in preparation for restarting
 118  * things.
 119  */
 120 static void unwind_pass1(ext2_filsys fs EXT2FS_ATTR((unused)))
 121 {
 122         ext2fs_free_mem(&inodes_to_process);
 123         inodes_to_process = 0;
 124 }
 125
 126 /*
 127  * Check to make sure a device inode is real.  Returns 1 if the device
 128  * checks out, 0 if not.
 129  *
 130  * Note: this routine is now also used to check FIFO's and Sockets,
 131  * since they have the same requirement; the i_block fields should be
 132  * zero.
 133  */
 134 int e2fsck_pass1_check_device_inode(ext2_filsys fs EXT2FS_ATTR((unused)),
 135                                     struct ext2_inode *inode)
 136 {
 137         int     i;
 138
 139         /*
 140          * If the index flag is set, then this is a bogus
 141          * device/fifo/socket
 142          */
 143         if (inode->i_flags & EXT2_INDEX_FL)
 144                 return 0;
 145
 146         /*
 147          * We should be able to do the test below all the time, but
 148          * because the kernel doesn't forcibly clear the device
 149          * inode's additional i_block fields, there are some rare
 150          * occasions when a legitimate device inode will have non-zero
 151          * additional i_block fields.  So for now, we only complain
 152          * when the immutable flag is set, which should never happen
 153          * for devices.  (And that's when the problem is caused, since
 154          * you can't set or clear immutable flags for devices.)  Once
 155          * the kernel has been fixed we can change this...
 156          */
 157         if (inode->i_flags & (EXT2_IMMUTABLE_FL | EXT2_APPEND_FL)) {
 158                 for (i=4; i < EXT2_N_BLOCKS; i++)
 159                         if (inode->i_block[i])
 160                                 return 0;
 161         }
 162         return 1;
 163 }
 164
 165 /*
 166  * Check to make sure a symlink inode is real.  Returns 1 if the symlink
 167  * checks out, 0 if not.
 168  */
 169 int e2fsck_pass1_check_symlink(ext2_filsys fs, ext2_ino_t ino,
 170                                struct ext2_inode *inode, char *buf)
 171 {
 172         unsigned int len;
 173         int i;
 174         blk64_t blocks;
 175         ext2_extent_handle_t    handle;
 176         struct ext2_extent_info info;
 177         struct ext2fs_extent    extent;
 178
 179         if ((inode->i_size_high || inode->i_size == 0) ||
 180             (inode->i_flags & EXT2_INDEX_FL))
 181                 return 0;
 182
 183         if (inode->i_flags & EXT4_EXTENTS_FL) {
 184                 if (inode->i_size > fs->blocksize)
 185                         return 0;
 186                 if (ext2fs_extent_open2(fs, ino, inode, &handle))
 187                         return 0;
 188                 i = 0;
 189                 if (ext2fs_extent_get_info(handle, &info) ||
 190                     (info.num_entries != 1) ||
 191                     (info.max_depth != 0))
 192                         goto exit_extent;
 193                 if (ext2fs_extent_get(handle, EXT2_EXTENT_ROOT, &extent) ||
 194                     (extent.e_lblk != 0) ||
 195                     (extent.e_len != 1) ||
 196                     (extent.e_pblk < fs->super->s_first_data_block) ||
 197                     (extent.e_pblk >= ext2fs_blocks_count(fs->super)))
 198                         goto exit_extent;
 199                 i = 1;
 200         exit_extent:
 201                 ext2fs_extent_free(handle);
 202                 return i;
 203         }
 204
 205         blocks = ext2fs_inode_data_blocks2(fs, inode);
 206         if (blocks) {
 207                 if ((inode->i_size >= fs->blocksize) ||
 208                     (blocks != fs->blocksize >> 9) ||
 209                     (inode->i_block[0] < fs->super->s_first_data_block) ||
 210                     (inode->i_block[0] >= ext2fs_blocks_count(fs->super)))
 211                         return 0;
 212
 213                 for (i = 1; i < EXT2_N_BLOCKS; i++)
 214                         if (inode->i_block[i])
 215                                 return 0;
 216
 217                 if (io_channel_read_blk64(fs->io, inode->i_block[0], 1, buf))
 218                         return 0;
 219
 220                 len = strnlen(buf, fs->blocksize);
 221                 if (len == fs->blocksize)
 222                         return 0;
 223         } else {
 224                 if (inode->i_size >= sizeof(inode->i_block))
 225                         return 0;
 226
 227                 len = strnlen((char *)inode->i_block, sizeof(inode->i_block));
 228                 if (len == sizeof(inode->i_block))
 229                         return 0;
 230         }
 231         if (len != inode->i_size)
 232                 return 0;
 233         return 1;
 234 }
 235
 236 /*
 237  * If the immutable (or append-only) flag is set on the inode, offer
 238  * to clear it.
 239  */
 240 #define BAD_SPECIAL_FLAGS (EXT2_IMMUTABLE_FL | EXT2_APPEND_FL)
 241 static void check_immutable(e2fsck_t ctx, struct problem_context *pctx)
 242 {
 243         if (!(pctx->inode->i_flags & BAD_SPECIAL_FLAGS))
 244                 return;
 245
 246         if (!fix_problem(ctx, PR_1_SET_IMMUTABLE, pctx))
 247                 return;
 248
 249         pctx->inode->i_flags &= ~BAD_SPECIAL_FLAGS;
 250         e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1");
 251 }
 252
 253 /*
 254  * If device, fifo or socket, check size is zero -- if not offer to
 255  * clear it
 256  */
 257 static void check_size(e2fsck_t ctx, struct problem_context *pctx)
 258 {
 259         struct ext2_inode *inode = pctx->inode;
 260
 261         if (EXT2_I_SIZE(inode) == 0)
 262                 return;
 263
 264         if (!fix_problem(ctx, PR_1_SET_NONZSIZE, pctx))
 265                 return;
 266
 267         inode->i_size = 0;
 268         inode->i_size_high = 0;
 269         e2fsck_write_inode(ctx, pctx->ino, pctx->inode, "pass1");
 270 }
 271
 272 static void check_ea_in_inode(e2fsck_t ctx, struct problem_context *pctx)
 273 {
 274         struct ext2_super_block *sb = ctx->fs->super;
 275         struct ext2_inode_large *inode;
 276         struct ext2_ext_attr_entry *entry;
 277         char *start;
 278         unsigned int storage_size, remain;
 279         int problem = 0;
 280
 281         inode = (struct ext2_inode_large *) pctx->inode;
 282         storage_size = EXT2_INODE_SIZE(ctx->fs->super) - EXT2_GOOD_OLD_INODE_SIZE -
 283                 inode->i_extra_isize;
 284         start = ((char *) inode) + EXT2_GOOD_OLD_INODE_SIZE +
 285                 inode->i_extra_isize + sizeof(__u32);
 286         entry = (struct ext2_ext_attr_entry *) start;
 287
 288         /* scan all entry's headers first */
 289
 290         /* take finish entry 0UL into account */
 291         remain = storage_size - sizeof(__u32);
 292
 293         while (!EXT2_EXT_IS_LAST_ENTRY(entry)) {
 294                 __u32 hash;
 295
 296                 /* header eats this space */
 297                 remain -= sizeof(struct ext2_ext_attr_entry);
 298
 299                 /* is attribute name valid? */
 300                 if (EXT2_EXT_ATTR_SIZE(entry->e_name_len) > remain) {
 301                         pctx->num = entry->e_name_len;
 302                         problem = PR_1_ATTR_NAME_LEN;
 303                         goto fix;
 304                 }
 305
 306                 /* attribute len eats this space */
 307                 remain -= EXT2_EXT_ATTR_SIZE(entry->e_name_len);
 308
 309                 /* check value size */
 310                 if (entry->e_value_size > remain) {
 311                         pctx->num = entry->e_value_size;
 312                         problem = PR_1_ATTR_VALUE_SIZE;
 313                         goto fix;
 314                 }
 315
 316                 /* e_value_block must be 0 in inode's ea */
 317                 if (entry->e_value_block != 0) {
 318                         pctx->num = entry->e_value_block;
 319                         problem = PR_1_ATTR_VALUE_BLOCK;
 320                         goto fix;
 321                 }
 322
 323                 hash = ext2fs_ext_attr_hash_entry(entry,
 324                                                   start + entry->e_value_offs);
 325
 326                 /* e_hash may be 0 in older inode's ea */
 327                 if (entry->e_hash != 0 && entry->e_hash != hash) {
 328                         pctx->num = entry->e_hash;
 329                         problem = PR_1_ATTR_HASH;
 330                         goto fix;
 331                 }
 332
 333                 remain -= entry->e_value_size;
 334
 335                 entry = EXT2_EXT_ATTR_NEXT(entry);
 336         }
 337 fix:
 338         /*
 339          * it seems like a corruption. it's very unlikely we could repair
 340          * EA(s) in automatic fashion -bzzz
 341          */
 342         if (problem == 0 || !fix_problem(ctx, problem, pctx))
 343                 return;
 344
 345         /* simply remove all possible EA(s) */
 346         *((__u32 *)start) = 0UL;
 347         e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
 348                                 EXT2_INODE_SIZE(sb), "pass1");
 349 }
 350
 351 static void check_inode_extra_space(e2fsck_t ctx, struct problem_context *pctx)
 352 {
 353         struct ext2_super_block *sb = ctx->fs->super;
 354         struct ext2_inode_large *inode;
 355         __u32 *eamagic;
 356         int min, max;
 357
 358         inode = (struct ext2_inode_large *) pctx->inode;
 359         if (EXT2_INODE_SIZE(sb) == EXT2_GOOD_OLD_INODE_SIZE) {
 360                 /* this isn't large inode. so, nothing to check */
 361                 return;
 362         }
 363
 364 #if 0
 365         printf("inode #%u, i_extra_size %d\n", pctx->ino,
 366                         inode->i_extra_isize);
 367 #endif
 368         /* i_extra_isize must cover i_extra_isize + i_checksum_hi at least */
 369         min = sizeof(inode->i_extra_isize) + sizeof(inode->i_checksum_hi);
 370         max = EXT2_INODE_SIZE(sb) - EXT2_GOOD_OLD_INODE_SIZE;
 371         /*
 372          * For now we will allow i_extra_isize to be 0, but really
 373          * implementations should never allow i_extra_isize to be 0
 374          */
 375         if (inode->i_extra_isize &&
 376             (inode->i_extra_isize < min || inode->i_extra_isize > max)) {
 377                 if (!fix_problem(ctx, PR_1_EXTRA_ISIZE, pctx))
 378                         return;
 379                 inode->i_extra_isize = min;
 380                 e2fsck_write_inode_full(ctx, pctx->ino, pctx->inode,
 381                                         EXT2_INODE_SIZE(sb), "pass1");
 382                 return;
 383         }
 384
 385         eamagic = (__u32 *) (((char *) inode) + EXT2_GOOD_OLD_INODE_SIZE +
 386                         inode->i_extra_isize);
 387         if (*eamagic == EXT2_EXT_ATTR_MAGIC) {
 388                 /* it seems inode has an extended attribute(s) in body */
 389                 check_ea_in_inode(ctx, pctx);
 390         }
 391 }
 392
 393 /*
 394  * Check to see if the inode might really be a directory, despite i_mode
 395  *
 396  * This is a lot of complexity for something for which I'm not really
 397  * convinced happens frequently in the wild.  If for any reason this
 398  * causes any problems, take this code out.
 399  * [tytso:20070331.0827EDT]
 400  */
 401 static void check_is_really_dir(e2fsck_t ctx, struct problem_context *pctx,
 402                                 char *buf)
 403 {
 404         struct ext2_inode *inode = pctx->inode;
 405         struct ext2_dir_entry   *dirent;
 406         errcode_t               retval;
 407         blk64_t                 blk;
 408         unsigned int            i, rec_len, not_device = 0;
 409         int                     extent_fs;
 410
 411         /*
 412          * If the mode looks OK, we believe it.  If the first block in
 413          * the i_block array is 0, this cannot be a directory. If the
 414          * inode is extent-mapped, it is still the case that the latter
 415          * cannot be 0 - the magic number in the extent header would make
 416          * it nonzero.
 417          */
 418         if (LINUX_S_ISDIR(inode->i_mode) || LINUX_S_ISREG(inode->i_mode) ||
 419             LINUX_S_ISLNK(inode->i_mode) || inode->i_block[0] == 0)
 420                 return;
 421
 422         /*
 423          * Check the block numbers in the i_block array for validity:
 424          * zero blocks are skipped (but the first one cannot be zero -
 425          * see above), other blocks are checked against the first and
 426          * max data blocks (from the the superblock) and against the
 427          * block bitmap. Any invalid block found means this cannot be
 428          * a directory.
 429          *
 430          * If there are non-zero blocks past the fourth entry, then
 431          * this cannot be a device file: we remember that for the next
 432          * check.
 433          *
 434          * For extent mapped files, we don't do any sanity checking:
 435          * just try to get the phys block of logical block 0 and run
 436          * with it.
 437          */
 438
 439         extent_fs = (ctx->fs->super->s_feature_incompat &
 440                      EXT3_FEATURE_INCOMPAT_EXTENTS);
 441         if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) {
 442                 /* extent mapped */
 443                 if  (ext2fs_bmap2(ctx->fs, pctx->ino, inode, 0, 0, 0, 0,
 444                                  &blk))
 445                         return;
 446                 /* device files are never extent mapped */
 447                 not_device++;
 448         } else {
 449                 for (i=0; i < EXT2_N_BLOCKS; i++) {
 450                         blk = inode->i_block[i];
 451                         if (!blk)
 452                                 continue;
 453                         if (i >= 4)
 454                                 not_device++;
 455
 456                         if (blk < ctx->fs->super->s_first_data_block ||
 457                             blk >= ext2fs_blocks_count(ctx->fs->super) ||
 458                             ext2fs_fast_test_block_bitmap2(ctx->block_found_map,
 459                                                            blk))
 460                                 return; /* Invalid block, can't be dir */
 461                 }
 462                 blk = inode->i_block[0];
 463         }
 464
 465         /*
 466          * If the mode says this is a device file and the i_links_count field
 467          * is sane and we have not ruled it out as a device file previously,
 468          * we declare it a device file, not a directory.
 469          */
 470         if ((LINUX_S_ISCHR(inode->i_mode) || LINUX_S_ISBLK(inode->i_mode)) &&
 471             (inode->i_links_count == 1) && !not_device)
 472                 return;
 473
 474         /* read the first block */
 475         ehandler_operation(_("reading directory block"));
 476         retval = ext2fs_read_dir_block4(ctx->fs, blk, buf, 0, pctx->ino);
 477         ehandler_operation(0);
 478         if (retval)
 479                 return;
 480
 481         dirent = (struct ext2_dir_entry *) buf;
 482         retval = ext2fs_get_rec_len(ctx->fs, dirent, &rec_len);
 483         if (retval)
 484                 return;
 485         if ((ext2fs_dirent_name_len(dirent) != 1) ||
 486             (dirent->name[0] != '.') ||
 487             (dirent->inode != pctx->ino) ||
 488             (rec_len < 12) ||
 489             (rec_len % 4) ||
 490             (rec_len >= ctx->fs->blocksize - 12))
 491                 return;
 492
 493         dirent = (struct ext2_dir_entry *) (buf + rec_len);
 494         retval = ext2fs_get_rec_len(ctx->fs, dirent, &rec_len);
 495         if (retval)
 496                 return;
 497         if ((ext2fs_dirent_name_len(dirent) != 2) ||
 498             (dirent->name[0] != '.') ||
 499             (dirent->name[1] != '.') ||
 500             (rec_len < 12) ||
 501             (rec_len % 4))
 502                 return;
 503
 504         if (fix_problem(ctx, PR_1_TREAT_AS_DIRECTORY, pctx)) {
 505                 inode->i_mode = (inode->i_mode & 07777) | LINUX_S_IFDIR;
 506                 e2fsck_write_inode_full(ctx, pctx->ino, inode,
 507                                         EXT2_INODE_SIZE(ctx->fs->super),
 508                                         "check_is_really_dir");
 509         }
 510 }
 511
 512 extern void e2fsck_setup_tdb_icount(e2fsck_t ctx, int flags,
 513                                     ext2_icount_t *ret)
 514 {
 515         unsigned int            threshold;
 516         ext2_ino_t              num_dirs;
 517         errcode_t               retval;
 518         char                    *tdb_dir;
 519         int                     enable;
 520
 521         *ret = 0;
 522
 523         profile_get_string(ctx->profile, "scratch_files", "directory", 0, 0,
 524                            &tdb_dir);
 525         profile_get_uint(ctx->profile, "scratch_files",
 526                          "numdirs_threshold", 0, 0, &threshold);
 527         profile_get_boolean(ctx->profile, "scratch_files",
 528                             "icount", 0, 1, &enable);
 529
 530         retval = ext2fs_get_num_dirs(ctx->fs, &num_dirs);
 531         if (retval)
 532                 num_dirs = 1024;        /* Guess */
 533
 534         if (!enable || !tdb_dir || access(tdb_dir, W_OK) ||
 535             (threshold && num_dirs <= threshold))
 536                 return;
 537
 538         retval = ext2fs_create_icount_tdb(ctx->fs, tdb_dir, flags, ret);
 539         if (retval)
 540                 *ret = 0;
 541 }
 542
 543 static errcode_t recheck_bad_inode_checksum(ext2_filsys fs, ext2_ino_t ino,
 544                                             e2fsck_t ctx,
 545                                             struct problem_context *pctx)
 546 {
 547         errcode_t retval;
 548         struct ext2_inode_large inode;
 549
 550         /*
 551          * Reread inode.  If we don't see checksum error, then this inode
 552          * has been fixed elsewhere.
 553          */
 554         retval = ext2fs_read_inode_full(fs, ino, (struct ext2_inode *)&inode,
 555                                         sizeof(inode));
 556         if (retval && retval != EXT2_ET_INODE_CSUM_INVALID)
 557                 return retval;
 558         if (!retval)
 559                 return 0;
 560
 561         /*
 562          * Checksum still doesn't match.  That implies that the inode passes
 563          * all the sanity checks, so maybe the checksum is simply corrupt.
 564          * See if the user will go for fixing that.
 565          */
 566         if (!fix_problem(ctx, PR_1_INODE_ONLY_CSUM_INVALID, pctx))
 567                 return 0;
 568
 569         retval = ext2fs_write_inode_full(fs, ino, (struct ext2_inode *)&inode,
 570                                          sizeof(inode));
 571         if (retval)
 572                 return retval;
 573
 574         return 0;
 575 }
 576
 577 void e2fsck_pass1(e2fsck_t ctx)
 578 {
 579         int     i;
 580         __u64   max_sizes;
 581         ext2_filsys fs = ctx->fs;
 582         ext2_ino_t      ino = 0;
 583         struct ext2_inode *inode;
 584         ext2_inode_scan scan;
 585         char            *block_buf;
 586 #ifdef RESOURCE_TRACK
 587         struct resource_track   rtrack;
 588 #endif
 589         unsigned char   frag, fsize;
 590         struct          problem_context pctx;
 591         struct          scan_callback_struct scan_struct;
 592         struct ext2_super_block *sb = ctx->fs->super;
 593         const char      *old_op;
 594         unsigned int    save_type;
 595         int             imagic_fs, extent_fs;
 596         int             busted_fs_time = 0;
 597         int             inode_size;
 598         int             failed_csum = 0;
 599
 600         init_resource_track(&rtrack, ctx->fs->io);
 601         clear_problem_context(&pctx);
 602
 603         if (!(ctx->options & E2F_OPT_PREEN))
 604                 fix_problem(ctx, PR_1_PASS_HEADER, &pctx);
 605
 606         if ((fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) &&
 607             !(ctx->options & E2F_OPT_NO)) {
 608                 if (ext2fs_u32_list_create(&ctx->dirs_to_hash, 50))
 609                         ctx->dirs_to_hash = 0;
 610         }
 611
 612 #ifdef MTRACE
 613         mtrace_print("Pass 1");
 614 #endif
 615
 616 #define EXT2_BPP(bits) (1ULL << ((bits) - 2))
 617
 618         for (i = EXT2_MIN_BLOCK_LOG_SIZE; i <= EXT2_MAX_BLOCK_LOG_SIZE; i++) {
 619                 max_sizes = EXT2_NDIR_BLOCKS + EXT2_BPP(i);
 620                 max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i);
 621                 max_sizes = max_sizes + EXT2_BPP(i) * EXT2_BPP(i) * EXT2_BPP(i);
 622                 max_sizes = (max_sizes * (1UL << i));
 623                 ext2_max_sizes[i - EXT2_MIN_BLOCK_LOG_SIZE] = max_sizes;
 624         }
 625 #undef EXT2_BPP
 626
 627         imagic_fs = (sb->s_feature_compat & EXT2_FEATURE_COMPAT_IMAGIC_INODES);
 628         extent_fs = (sb->s_feature_incompat & EXT3_FEATURE_INCOMPAT_EXTENTS);
 629
 630         /*
 631          * Allocate bitmaps structures
 632          */
 633         pctx.errcode = e2fsck_allocate_inode_bitmap(fs, _("in-use inode map"),
 634                                                     EXT2FS_BMAP64_RBTREE,
 635                                                     "inode_used_map",
 636                                                     &ctx->inode_used_map);
 637         if (pctx.errcode) {
 638                 pctx.num = 1;
 639                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
 640                 ctx->flags |= E2F_FLAG_ABORT;
 641                 return;
 642         }
 643         pctx.errcode = e2fsck_allocate_inode_bitmap(fs,
 644                         _("directory inode map"),
 645                         EXT2FS_BMAP64_AUTODIR,
 646                         "inode_dir_map", &ctx->inode_dir_map);
 647         if (pctx.errcode) {
 648                 pctx.num = 2;
 649                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
 650                 ctx->flags |= E2F_FLAG_ABORT;
 651                 return;
 652         }
 653         pctx.errcode = e2fsck_allocate_inode_bitmap(fs,
 654                         _("regular file inode map"), EXT2FS_BMAP64_RBTREE,
 655                         "inode_reg_map", &ctx->inode_reg_map);
 656         if (pctx.errcode) {
 657                 pctx.num = 6;
 658                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
 659                 ctx->flags |= E2F_FLAG_ABORT;
 660                 return;
 661         }
 662         pctx.errcode = e2fsck_allocate_subcluster_bitmap(fs,
 663                         _("in-use block map"), EXT2FS_BMAP64_RBTREE,
 664                         "block_found_map", &ctx->block_found_map);
 665         if (pctx.errcode) {
 666                 pctx.num = 1;
 667                 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
 668                 ctx->flags |= E2F_FLAG_ABORT;
 669                 return;
 670         }
 671         e2fsck_setup_tdb_icount(ctx, 0, &ctx->inode_link_info);
 672         if (!ctx->inode_link_info) {
 673                 e2fsck_set_bitmap_type(fs, EXT2FS_BMAP64_RBTREE,
 674                                        "inode_link_info", &save_type);
 675                 pctx.errcode = ext2fs_create_icount2(fs, 0, 0, 0,
 676                                                      &ctx->inode_link_info);
 677                 fs->default_bitmap_type = save_type;
 678         }
 679
 680         if (pctx.errcode) {
 681                 fix_problem(ctx, PR_1_ALLOCATE_ICOUNT, &pctx);
 682                 ctx->flags |= E2F_FLAG_ABORT;
 683                 return;
 684         }
 685         inode_size = EXT2_INODE_SIZE(fs->super);
 686         inode = (struct ext2_inode *)
 687                 e2fsck_allocate_memory(ctx, inode_size, "scratch inode");
 688
 689         inodes_to_process = (struct process_inode_block *)
 690                 e2fsck_allocate_memory(ctx,
 691                                        (ctx->process_inode_size *
 692                                         sizeof(struct process_inode_block)),
 693                                        "array of inodes to process");
 694         process_inode_count = 0;
 695
 696         pctx.errcode = ext2fs_init_dblist(fs, 0);
 697         if (pctx.errcode) {
 698                 fix_problem(ctx, PR_1_ALLOCATE_DBCOUNT, &pctx);
 699                 ctx->flags |= E2F_FLAG_ABORT;
 700                 ext2fs_free_mem(&inode);
 701                 return;
 702         }
 703
 704         /*
 705          * If the last orphan field is set, clear it, since the pass1
 706          * processing will automatically find and clear the orphans.
 707          * In the future, we may want to try using the last_orphan
 708          * linked list ourselves, but for now, we clear it so that the
 709          * ext3 mount code won't get confused.
 710          */
 711         if (!(ctx->options & E2F_OPT_READONLY)) {
 712                 if (fs->super->s_last_orphan) {
 713                         fs->super->s_last_orphan = 0;
 714                         ext2fs_mark_super_dirty(fs);
 715                 }
 716         }
 717
 718         mark_table_blocks(ctx);
 719         pctx.errcode = ext2fs_convert_subcluster_bitmap(fs,
 720                                                 &ctx->block_found_map);
 721         if (pctx.errcode) {
 722                 fix_problem(ctx, PR_1_CONVERT_SUBCLUSTER, &pctx);
 723                 ctx->flags |= E2F_FLAG_ABORT;
 724                 ext2fs_free_mem(&inode);
 725                 return;
 726         }
 727         block_buf = (char *) e2fsck_allocate_memory(ctx, fs->blocksize * 3,
 728                                                     "block interate buffer");
 729         if (EXT2_INODE_SIZE(fs->super) == EXT2_GOOD_OLD_INODE_SIZE)
 730                 e2fsck_use_inode_shortcuts(ctx, 1);
 731         old_op = ehandler_operation(_("opening inode scan"));
 732         pctx.errcode = ext2fs_open_inode_scan(fs, ctx->inode_buffer_blocks,
 733                                               &scan);
 734         ehandler_operation(old_op);
 735         if (pctx.errcode) {
 736                 fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx);
 737                 ctx->flags |= E2F_FLAG_ABORT;
 738                 ext2fs_free_mem(&block_buf);
 739                 ext2fs_free_mem(&inode);
 740                 return;
 741         }
 742         ext2fs_inode_scan_flags(scan, EXT2_SF_SKIP_MISSING_ITABLE, 0);
 743         ctx->stashed_inode = inode;
 744         scan_struct.ctx = ctx;
 745         scan_struct.block_buf = block_buf;
 746         ext2fs_set_inode_callback(scan, scan_callback, &scan_struct);
 747         if (ctx->progress)
 748                 if ((ctx->progress)(ctx, 1, 0, ctx->fs->group_desc_count))
 749                         return;
 750         if ((fs->super->s_wtime < fs->super->s_inodes_count) ||
 751             (fs->super->s_mtime < fs->super->s_inodes_count))
 752                 busted_fs_time = 1;
 753
 754         if ((fs->super->s_feature_incompat & EXT4_FEATURE_INCOMPAT_MMP) &&
 755             !(fs->super->s_mmp_block <= fs->super->s_first_data_block ||
 756               fs->super->s_mmp_block >= fs->super->s_blocks_count))
 757                 ext2fs_mark_block_bitmap2(ctx->block_found_map,
 758                                           fs->super->s_mmp_block);
 759
 760         /* Set up ctx->lost_and_found if possible */
 761         (void) e2fsck_get_lost_and_found(ctx, 0);
 762
 763         while (1) {
 764                 if (ino % (fs->super->s_inodes_per_group * 4) == 1) {
 765                         if (e2fsck_mmp_update(fs))
 766                                 fatal_error(ctx, 0);
 767                 }
 768                 old_op = ehandler_operation(_("getting next inode from scan"));
 769                 pctx.errcode = ext2fs_get_next_inode_full(scan, &ino,
 770                                                           inode, inode_size);
 771                 ehandler_operation(old_op);
 772                 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
 773                         return;
 774                 if (pctx.errcode == EXT2_ET_BAD_BLOCK_IN_INODE_TABLE) {
 775                         if (!ctx->inode_bb_map)
 776                                 alloc_bb_map(ctx);
 777                         ext2fs_mark_inode_bitmap2(ctx->inode_bb_map, ino);
 778                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
 779                         continue;
 780                 }
 781                 if (pctx.errcode &&
 782                     pctx.errcode != EXT2_ET_INODE_CSUM_INVALID) {
 783                         fix_problem(ctx, PR_1_ISCAN_ERROR, &pctx);
 784                         ctx->flags |= E2F_FLAG_ABORT;
 785                         return;
 786                 }
 787                 if (!ino)
 788                         break;
 789                 pctx.ino = ino;
 790                 pctx.inode = inode;
 791                 ctx->stashed_ino = ino;
 792
 793                 /* Clear corrupt inode? */
 794                 if (pctx.errcode == EXT2_ET_INODE_CSUM_INVALID) {
 795                         if (fix_problem(ctx, PR_1_INODE_CSUM_INVALID, &pctx))
 796                                 goto clear_inode;
 797                         failed_csum = 1;
 798                 }
 799
 800                 if (inode->i_links_count) {
 801                         pctx.errcode = ext2fs_icount_store(ctx->inode_link_info,
 802                                            ino, inode->i_links_count);
 803                         if (pctx.errcode) {
 804                                 pctx.num = inode->i_links_count;
 805                                 fix_problem(ctx, PR_1_ICOUNT_STORE, &pctx);
 806                                 ctx->flags |= E2F_FLAG_ABORT;
 807                                 return;
 808                         }
 809                 }
 810
 811                 /*
 812                  * Test for incorrect extent flag settings.
 813                  *
 814                  * On big-endian machines we must be careful:
 815                  * When the inode is read, the i_block array is not swapped
 816                  * if the extent flag is set.  Therefore if we are testing
 817                  * for or fixing a wrongly-set flag, we must potentially
 818                  * (un)swap before testing, or after fixing.
 819                  */
 820
 821                 /*
 822                  * In this case the extents flag was set when read, so
 823                  * extent_header_verify is ok.  If the inode is cleared,
 824                  * no need to swap... so no extra swapping here.
 825                  */
 826                 if ((inode->i_flags & EXT4_EXTENTS_FL) && !extent_fs &&
 827                     (inode->i_links_count || (ino == EXT2_BAD_INO) ||
 828                      (ino == EXT2_ROOT_INO) || (ino == EXT2_JOURNAL_INO))) {
 829                         if ((ext2fs_extent_header_verify(inode->i_block,
 830                                                  sizeof(inode->i_block)) == 0) &&
 831                             fix_problem(ctx, PR_1_EXTENT_FEATURE, &pctx)) {
 832                                 sb->s_feature_incompat |= EXT3_FEATURE_INCOMPAT_EXTENTS;
 833                                 ext2fs_mark_super_dirty(fs);
 834                                 extent_fs = 1;
 835                         } else if (fix_problem(ctx, PR_1_EXTENTS_SET, &pctx)) {
 836                         clear_inode:
 837                                 e2fsck_clear_inode(ctx, ino, inode, 0, "pass1");
 838                                 if (ino == EXT2_BAD_INO)
 839                                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map,
 840                                                                  ino);
 841                                 continue;
 842                         }
 843                 }
 844
 845                 /*
 846                  * For big-endian machines:
 847                  * If the inode didn't have the extents flag set when it
 848                  * was read, then the i_blocks array was swapped.  To test
 849                  * as an extents header, we must swap it back first.
 850                  * IF we then set the extents flag, the entire i_block
 851                  * array must be un/re-swapped to make it proper extents data.
 852                  */
 853                 if (extent_fs && !(inode->i_flags & EXT4_EXTENTS_FL) &&
 854                     (inode->i_links_count || (ino == EXT2_BAD_INO) ||
 855                      (ino == EXT2_ROOT_INO) || (ino == EXT2_JOURNAL_INO)) &&
 856                     (LINUX_S_ISREG(inode->i_mode) ||
 857                      LINUX_S_ISDIR(inode->i_mode))) {
 858                         void *ehp;
 859 #ifdef WORDS_BIGENDIAN
 860                         __u32 tmp_block[EXT2_N_BLOCKS];
 861
 862                         for (i = 0; i < EXT2_N_BLOCKS; i++)
 863                                 tmp_block[i] = ext2fs_swab32(inode->i_block[i]);
 864                         ehp = tmp_block;
 865 #else
 866                         ehp = inode->i_block;
 867 #endif
 868                         if ((ext2fs_extent_header_verify(ehp,
 869                                          sizeof(inode->i_block)) == 0) &&
 870                             (fix_problem(ctx, PR_1_UNSET_EXTENT_FL, &pctx))) {
 871                                 inode->i_flags |= EXT4_EXTENTS_FL;
 872 #ifdef WORDS_BIGENDIAN
 873                                 memcpy(inode->i_block, tmp_block,
 874                                        sizeof(inode->i_block));
 875 #endif
 876                                 e2fsck_write_inode(ctx, ino, inode, "pass1");
 877                         }
 878                 }
 879
 880                 if (ino == EXT2_BAD_INO) {
 881                         struct process_block_struct pb;
 882
 883                         if ((inode->i_mode || inode->i_uid || inode->i_gid ||
 884                              inode->i_links_count || inode->i_file_acl) &&
 885                             fix_problem(ctx, PR_1_INVALID_BAD_INODE, &pctx)) {
 886                                 memset(inode, 0, sizeof(struct ext2_inode));
 887                                 e2fsck_write_inode(ctx, ino, inode,
 888                                                    "clear bad inode");
 889                         }
 890
 891                         pctx.errcode = ext2fs_copy_bitmap(ctx->block_found_map,
 892                                                           &pb.fs_meta_blocks);
 893                         if (pctx.errcode) {
 894                                 pctx.num = 4;
 895                                 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, &pctx);
 896                                 ctx->flags |= E2F_FLAG_ABORT;
 897                                 return;
 898                         }
 899                         pb.ino = EXT2_BAD_INO;
 900                         pb.num_blocks = pb.last_block = 0;
 901                         pb.last_db_block = -1;
 902                         pb.num_illegal_blocks = 0;
 903                         pb.suppress = 0; pb.clear = 0; pb.is_dir = 0;
 904                         pb.is_reg = 0; pb.fragmented = 0; pb.bbcheck = 0;
 905                         pb.inode = inode;
 906                         pb.pctx = &pctx;
 907                         pb.ctx = ctx;
 908                         pctx.errcode = ext2fs_block_iterate3(fs, ino, 0,
 909                                      block_buf, process_bad_block, &pb);
 910                         ext2fs_free_block_bitmap(pb.fs_meta_blocks);
 911                         if (pctx.errcode) {
 912                                 fix_problem(ctx, PR_1_BLOCK_ITERATE, &pctx);
 913                                 ctx->flags |= E2F_FLAG_ABORT;
 914                                 return;
 915                         }
 916                         if (pb.bbcheck)
 917                                 if (!fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK_PROMPT, &pctx)) {
 918                                 ctx->flags |= E2F_FLAG_ABORT;
 919                                 return;
 920                         }
 921                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
 922                         clear_problem_context(&pctx);
 923                         continue;
 924                 } else if (ino == EXT2_ROOT_INO) {
 925                         /*
 926                          * Make sure the root inode is a directory; if
 927                          * not, offer to clear it.  It will be
 928                          * regnerated in pass #3.
 929                          */
 930                         if (!LINUX_S_ISDIR(inode->i_mode)) {
 931                                 if (fix_problem(ctx, PR_1_ROOT_NO_DIR, &pctx))
 932                                         goto clear_inode;
 933                         }
 934                         /*
 935                          * If dtime is set, offer to clear it.  mke2fs
 936                          * version 0.2b created filesystems with the
 937                          * dtime field set for the root and lost+found
 938                          * directories.  We won't worry about
 939                          * /lost+found, since that can be regenerated
 940                          * easily.  But we will fix the root directory
 941                          * as a special case.
 942                          */
 943                         if (inode->i_dtime && inode->i_links_count) {
 944                                 if (fix_problem(ctx, PR_1_ROOT_DTIME, &pctx)) {
 945                                         inode->i_dtime = 0;
 946                                         e2fsck_write_inode(ctx, ino, inode,
 947                                                            "pass1");
 948                                 }
 949                         }
 950                 } else if (ino == EXT2_JOURNAL_INO) {
 951                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
 952                         if (fs->super->s_journal_inum == EXT2_JOURNAL_INO) {
 953                                 if (!LINUX_S_ISREG(inode->i_mode) &&
 954                                     fix_problem(ctx, PR_1_JOURNAL_BAD_MODE,
 955                                                 &pctx)) {
 956                                         inode->i_mode = LINUX_S_IFREG;
 957                                         e2fsck_write_inode(ctx, ino, inode,
 958                                                            "pass1");
 959                                 }
 960                                 check_blocks(ctx, &pctx, block_buf);
 961                                 continue;
 962                         }
 963                         if ((inode->i_links_count ||
 964                              inode->i_blocks || inode->i_block[0]) &&
 965                             fix_problem(ctx, PR_1_JOURNAL_INODE_NOT_CLEAR,
 966                                         &pctx)) {
 967                                 memset(inode, 0, inode_size);
 968                                 ext2fs_icount_store(ctx->inode_link_info,
 969                                                     ino, 0);
 970                                 e2fsck_write_inode_full(ctx, ino, inode,
 971                                                         inode_size, "pass1");
 972                         }
 973                 } else if ((ino == EXT4_USR_QUOTA_INO) ||
 974                            (ino == EXT4_GRP_QUOTA_INO)) {
 975                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
 976                         if ((fs->super->s_feature_ro_compat &
 977                                         EXT4_FEATURE_RO_COMPAT_QUOTA) &&
 978                             ((fs->super->s_usr_quota_inum == ino) ||
 979                              (fs->super->s_grp_quota_inum == ino))) {
 980                                 if (!LINUX_S_ISREG(inode->i_mode) &&
 981                                     fix_problem(ctx, PR_1_QUOTA_BAD_MODE,
 982                                                         &pctx)) {
 983                                         inode->i_mode = LINUX_S_IFREG;
 984                                         e2fsck_write_inode(ctx, ino, inode,
 985                                                         "pass1");
 986                                 }
 987                                 check_blocks(ctx, &pctx, block_buf);
 988                                 continue;
 989                         }
 990                         if ((inode->i_links_count ||
 991                              inode->i_blocks || inode->i_block[0]) &&
 992                             fix_problem(ctx, PR_1_QUOTA_INODE_NOT_CLEAR,
 993                                         &pctx)) {
 994                                 memset(inode, 0, inode_size);
 995                                 ext2fs_icount_store(ctx->inode_link_info,
 996                                                     ino, 0);
 997                                 e2fsck_write_inode_full(ctx, ino, inode,
 998                                                         inode_size, "pass1");
 999                         }
1000                 } else if (ino < EXT2_FIRST_INODE(fs->super)) {
1001                         int     problem = 0;
1002
1003                         ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1004                         if (ino == EXT2_BOOT_LOADER_INO) {
1005                                 if (LINUX_S_ISDIR(inode->i_mode))
1006                                         problem = PR_1_RESERVED_BAD_MODE;
1007                         } else if (ino == EXT2_RESIZE_INO) {
1008                                 if (inode->i_mode &&
1009                                     !LINUX_S_ISREG(inode->i_mode))
1010                                         problem = PR_1_RESERVED_BAD_MODE;
1011                         } else {
1012                                 if (inode->i_mode != 0)
1013                                         problem = PR_1_RESERVED_BAD_MODE;
1014                         }
1015                         if (problem) {
1016                                 if (fix_problem(ctx, problem, &pctx)) {
1017                                         inode->i_mode = 0;
1018                                         e2fsck_write_inode(ctx, ino, inode,
1019                                                            "pass1");
1020                                 }
1021                         }
1022                         check_blocks(ctx, &pctx, block_buf);
1023                         continue;
1024                 }
1025
1026                 /*
1027                  * Check for inodes who might have been part of the
1028                  * orphaned list linked list.  They should have gotten
1029                  * dealt with by now, unless the list had somehow been
1030                  * corrupted.
1031                  *
1032                  * FIXME: In the future, inodes which are still in use
1033                  * (and which are therefore) pending truncation should
1034                  * be handled specially.  Right now we just clear the
1035                  * dtime field, and the normal e2fsck handling of
1036                  * inodes where i_size and the inode blocks are
1037                  * inconsistent is to fix i_size, instead of releasing
1038                  * the extra blocks.  This won't catch the inodes that
1039                  * was at the end of the orphan list, but it's better
1040                  * than nothing.  The right answer is that there
1041                  * shouldn't be any bugs in the orphan list handling.  :-)
1042                  */
1043                 if (inode->i_dtime && !busted_fs_time &&
1044                     inode->i_dtime < ctx->fs->super->s_inodes_count) {
1045                         if (fix_problem(ctx, PR_1_LOW_DTIME, &pctx)) {
1046                                 inode->i_dtime = inode->i_links_count ?
1047                                         0 : ctx->now;
1048                                 e2fsck_write_inode(ctx, ino, inode,
1049                                                    "pass1");
1050                         }
1051                 }
1052
1053                 /*
1054                  * This code assumes that deleted inodes have
1055                  * i_links_count set to 0.
1056                  */
1057                 if (!inode->i_links_count) {
1058                         if (!inode->i_dtime && inode->i_mode) {
1059                                 if (fix_problem(ctx,
1060                                             PR_1_ZERO_DTIME, &pctx)) {
1061                                         inode->i_dtime = ctx->now;
1062                                         e2fsck_write_inode(ctx, ino, inode,
1063                                                            "pass1");
1064                                 }
1065                         }
1066                         continue;
1067                 }
1068                 /*
1069                  * n.b.  0.3c ext2fs code didn't clear i_links_count for
1070                  * deleted files.  Oops.
1071                  *
1072                  * Since all new ext2 implementations get this right,
1073                  * we now assume that the case of non-zero
1074                  * i_links_count and non-zero dtime means that we
1075                  * should keep the file, not delete it.
1076                  *
1077                  */
1078                 if (inode->i_dtime) {
1079                         if (fix_problem(ctx, PR_1_SET_DTIME, &pctx)) {
1080                                 inode->i_dtime = 0;
1081                                 e2fsck_write_inode(ctx, ino, inode, "pass1");
1082                         }
1083                 }
1084
1085                 ext2fs_mark_inode_bitmap2(ctx->inode_used_map, ino);
1086                 switch (fs->super->s_creator_os) {
1087                     case EXT2_OS_HURD:
1088                         frag = inode->osd2.hurd2.h_i_frag;
1089                         fsize = inode->osd2.hurd2.h_i_fsize;
1090                         break;
1091                     default:
1092                         frag = fsize = 0;
1093                 }
1094
1095                 if (inode->i_faddr || frag || fsize ||
1096                     (LINUX_S_ISDIR(inode->i_mode) && inode->i_dir_acl))
1097                         mark_inode_bad(ctx, ino);
1098                 if (!(fs->super->s_feature_incompat &
1099                       EXT4_FEATURE_INCOMPAT_64BIT) &&
1100                     inode->osd2.linux2.l_i_file_acl_high != 0)
1101                         mark_inode_bad(ctx, ino);
1102                 if ((fs->super->s_creator_os == EXT2_OS_LINUX) &&
1103                     !(fs->super->s_feature_ro_compat &
1104                       EXT4_FEATURE_RO_COMPAT_HUGE_FILE) &&
1105                     (inode->osd2.linux2.l_i_blocks_hi != 0))
1106                         mark_inode_bad(ctx, ino);
1107                 if (inode->i_flags & EXT2_IMAGIC_FL) {
1108                         if (imagic_fs) {
1109                                 if (!ctx->inode_imagic_map)
1110                                         alloc_imagic_map(ctx);
1111                                 ext2fs_mark_inode_bitmap2(ctx->inode_imagic_map,
1112                                                          ino);
1113                         } else {
1114                                 if (fix_problem(ctx, PR_1_SET_IMAGIC, &pctx)) {
1115                                         inode->i_flags &= ~EXT2_IMAGIC_FL;
1116                                         e2fsck_write_inode(ctx, ino,
1117                                                            inode, "pass1");
1118                                 }
1119                         }
1120                 }
1121
1122                 check_inode_extra_space(ctx, &pctx);
1123                 check_is_really_dir(ctx, &pctx, block_buf);
1124
1125                 /*
1126                  * ext2fs_inode_has_valid_blocks2 does not actually look
1127                  * at i_block[] values, so not endian-sensitive here.
1128                  */
1129                 if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL) &&
1130                     LINUX_S_ISLNK(inode->i_mode) &&
1131                     !ext2fs_inode_has_valid_blocks2(fs, inode) &&
1132                     fix_problem(ctx, PR_1_FAST_SYMLINK_EXTENT_FL, &pctx)) {
1133                         inode->i_flags &= ~EXT4_EXTENTS_FL;
1134                         e2fsck_write_inode(ctx, ino, inode, "pass1");
1135                 }
1136
1137                 if (LINUX_S_ISDIR(inode->i_mode)) {
1138                         ext2fs_mark_inode_bitmap2(ctx->inode_dir_map, ino);
1139                         e2fsck_add_dir_info(ctx, ino, 0);
1140                         ctx->fs_directory_count++;
1141                 } else if (LINUX_S_ISREG (inode->i_mode)) {
1142                         ext2fs_mark_inode_bitmap2(ctx->inode_reg_map, ino);
1143                         ctx->fs_regular_count++;
1144                 } else if (LINUX_S_ISCHR (inode->i_mode) &&
1145                            e2fsck_pass1_check_device_inode(fs, inode)) {
1146                         check_immutable(ctx, &pctx);
1147                         check_size(ctx, &pctx);
1148                         ctx->fs_chardev_count++;
1149                 } else if (LINUX_S_ISBLK (inode->i_mode) &&
1150                            e2fsck_pass1_check_device_inode(fs, inode)) {
1151                         check_immutable(ctx, &pctx);
1152                         check_size(ctx, &pctx);
1153                         ctx->fs_blockdev_count++;
1154                 } else if (LINUX_S_ISLNK (inode->i_mode) &&
1155                            e2fsck_pass1_check_symlink(fs, ino, inode,
1156                                                       block_buf)) {
1157                         check_immutable(ctx, &pctx);
1158                         ctx->fs_symlinks_count++;
1159                         if (ext2fs_inode_data_blocks(fs, inode) == 0) {
1160                                 ctx->fs_fast_symlinks_count++;
1161                                 check_blocks(ctx, &pctx, block_buf);
1162                                 continue;
1163                         }
1164                 }
1165                 else if (LINUX_S_ISFIFO (inode->i_mode) &&
1166                          e2fsck_pass1_check_device_inode(fs, inode)) {
1167                         check_immutable(ctx, &pctx);
1168                         check_size(ctx, &pctx);
1169                         ctx->fs_fifo_count++;
1170                 } else if ((LINUX_S_ISSOCK (inode->i_mode)) &&
1171                            e2fsck_pass1_check_device_inode(fs, inode)) {
1172                         check_immutable(ctx, &pctx);
1173                         check_size(ctx, &pctx);
1174                         ctx->fs_sockets_count++;
1175                 } else
1176                         mark_inode_bad(ctx, ino);
1177                 if (!(inode->i_flags & EXT4_EXTENTS_FL)) {
1178                         if (inode->i_block[EXT2_IND_BLOCK])
1179                                 ctx->fs_ind_count++;
1180                         if (inode->i_block[EXT2_DIND_BLOCK])
1181                                 ctx->fs_dind_count++;
1182                         if (inode->i_block[EXT2_TIND_BLOCK])
1183                                 ctx->fs_tind_count++;
1184                 }
1185                 if (!(inode->i_flags & EXT4_EXTENTS_FL) &&
1186                     (inode->i_block[EXT2_IND_BLOCK] ||
1187                      inode->i_block[EXT2_DIND_BLOCK] ||
1188                      inode->i_block[EXT2_TIND_BLOCK] ||
1189                      ext2fs_file_acl_block(fs, inode))) {
1190                         inodes_to_process[process_inode_count].ino = ino;
1191                         inodes_to_process[process_inode_count].inode = *inode;
1192                         process_inode_count++;
1193                 } else
1194                         check_blocks(ctx, &pctx, block_buf);
1195
1196                 /*
1197                  * If the inode failed the checksum and the user didn't
1198                  * clear the inode, test the checksum again -- if it still
1199                  * fails, ask the user if the checksum should be corrected.
1200                  */
1201                 if (failed_csum) {
1202                         pctx.errcode = recheck_bad_inode_checksum(fs, ino, ctx,
1203                                                                   &pctx);
1204                         if (pctx.errcode) {
1205                                 ctx->flags |= E2F_FLAG_ABORT;
1206                                 return;
1207                         }
1208                 }
1209
1210                 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1211                         return;
1212
1213                 if (process_inode_count >= ctx->process_inode_size) {
1214                         process_inodes(ctx, block_buf);
1215
1216                         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1217                                 return;
1218                 }
1219         }
1220         process_inodes(ctx, block_buf);
1221         ext2fs_close_inode_scan(scan);
1222
1223         /*
1224          * If any extended attribute blocks' reference counts need to
1225          * be adjusted, either up (ctx->refcount_extra), or down
1226          * (ctx->refcount), then fix them.
1227          */
1228         if (ctx->refcount) {
1229                 adjust_extattr_refcount(ctx, ctx->refcount, block_buf, -1);
1230                 ea_refcount_free(ctx->refcount);
1231                 ctx->refcount = 0;
1232         }
1233         if (ctx->refcount_extra) {
1234                 adjust_extattr_refcount(ctx, ctx->refcount_extra,
1235                                         block_buf, +1);
1236                 ea_refcount_free(ctx->refcount_extra);
1237                 ctx->refcount_extra = 0;
1238         }
1239
1240         if (ctx->invalid_bitmaps)
1241                 handle_fs_bad_blocks(ctx);
1242
1243         /* We don't need the block_ea_map any more */
1244         if (ctx->block_ea_map) {
1245                 ext2fs_free_block_bitmap(ctx->block_ea_map);
1246                 ctx->block_ea_map = 0;
1247         }
1248
1249         if (ctx->flags & E2F_FLAG_RESIZE_INODE) {
1250                 ext2fs_block_bitmap save_bmap;
1251
1252                 save_bmap = fs->block_map;
1253                 fs->block_map = ctx->block_found_map;
1254                 clear_problem_context(&pctx);
1255                 pctx.errcode = ext2fs_create_resize_inode(fs);
1256                 if (pctx.errcode) {
1257                         if (!fix_problem(ctx, PR_1_RESIZE_INODE_CREATE,
1258                                          &pctx)) {
1259                                 ctx->flags |= E2F_FLAG_ABORT;
1260                                 return;
1261                         }
1262                         pctx.errcode = 0;
1263                 }
1264                 if (!pctx.errcode) {
1265                         e2fsck_read_inode(ctx, EXT2_RESIZE_INO, inode,
1266                                           "recreate inode");
1267                         inode->i_mtime = ctx->now;
1268                         e2fsck_write_inode(ctx, EXT2_RESIZE_INO, inode,
1269                                            "recreate inode");
1270                 }
1271                 fs->block_map = save_bmap;
1272                 ctx->flags &= ~E2F_FLAG_RESIZE_INODE;
1273         }
1274
1275         if (ctx->flags & E2F_FLAG_RESTART) {
1276                 /*
1277                  * Only the master copy of the superblock and block
1278                  * group descriptors are going to be written during a
1279                  * restart, so set the superblock to be used to be the
1280                  * master superblock.
1281                  */
1282                 ctx->use_superblock = 0;
1283                 unwind_pass1(fs);
1284                 goto endit;
1285         }
1286
1287         if (ctx->block_dup_map) {
1288                 if (ctx->options & E2F_OPT_PREEN) {
1289                         clear_problem_context(&pctx);
1290                         fix_problem(ctx, PR_1_DUP_BLOCKS_PREENSTOP, &pctx);
1291                 }
1292                 e2fsck_pass1_dupblocks(ctx, block_buf);
1293         }
1294         ext2fs_free_mem(&inodes_to_process);
1295 endit:
1296         e2fsck_use_inode_shortcuts(ctx, 0);
1297
1298         ext2fs_free_mem(&block_buf);
1299         ext2fs_free_mem(&inode);
1300
1301         /*
1302          * The l+f inode may have been cleared, so zap it now and
1303          * later passes will recalculate it if necessary
1304          */
1305         ctx->lost_and_found = 0;
1306
1307         print_resource_track(ctx, _("Pass 1"), &rtrack, ctx->fs->io);
1308 }
1309
1310 /*
1311  * When the inode_scan routines call this callback at the end of the
1312  * glock group, call process_inodes.
1313  */
1314 static errcode_t scan_callback(ext2_filsys fs,
1315                                ext2_inode_scan scan EXT2FS_ATTR((unused)),
1316                                dgrp_t group, void * priv_data)
1317 {
1318         struct scan_callback_struct *scan_struct;
1319         e2fsck_t ctx;
1320
1321         scan_struct = (struct scan_callback_struct *) priv_data;
1322         ctx = scan_struct->ctx;
1323
1324         process_inodes((e2fsck_t) fs->priv_data, scan_struct->block_buf);
1325
1326         if (ctx->progress)
1327                 if ((ctx->progress)(ctx, 1, group+1,
1328                                     ctx->fs->group_desc_count))
1329                         return EXT2_ET_CANCEL_REQUESTED;
1330
1331         return 0;
1332 }
1333
1334 /*
1335  * Process the inodes in the "inodes to process" list.
1336  */
1337 static void process_inodes(e2fsck_t ctx, char *block_buf)
1338 {
1339         int                     i;
1340         struct ext2_inode       *old_stashed_inode;
1341         ext2_ino_t              old_stashed_ino;
1342         const char              *old_operation;
1343         char                    buf[80];
1344         struct problem_context  pctx;
1345
1346 #if 0
1347         printf("begin process_inodes: ");
1348 #endif
1349         if (process_inode_count == 0)
1350                 return;
1351         old_operation = ehandler_operation(0);
1352         old_stashed_inode = ctx->stashed_inode;
1353         old_stashed_ino = ctx->stashed_ino;
1354         qsort(inodes_to_process, process_inode_count,
1355                       sizeof(struct process_inode_block), process_inode_cmp);
1356         clear_problem_context(&pctx);
1357         for (i=0; i < process_inode_count; i++) {
1358                 pctx.inode = ctx->stashed_inode = &inodes_to_process[i].inode;
1359                 pctx.ino = ctx->stashed_ino = inodes_to_process[i].ino;
1360
1361 #if 0
1362                 printf("%u ", pctx.ino);
1363 #endif
1364                 sprintf(buf, _("reading indirect blocks of inode %u"),
1365                         pctx.ino);
1366                 ehandler_operation(buf);
1367                 check_blocks(ctx, &pctx, block_buf);
1368                 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
1369                         break;
1370         }
1371         ctx->stashed_inode = old_stashed_inode;
1372         ctx->stashed_ino = old_stashed_ino;
1373         process_inode_count = 0;
1374 #if 0
1375         printf("end process inodes\n");
1376 #endif
1377         ehandler_operation(old_operation);
1378 }
1379
1380 static EXT2_QSORT_TYPE process_inode_cmp(const void *a, const void *b)
1381 {
1382         const struct process_inode_block *ib_a =
1383                 (const struct process_inode_block *) a;
1384         const struct process_inode_block *ib_b =
1385                 (const struct process_inode_block *) b;
1386         int     ret;
1387
1388         ret = (ib_a->inode.i_block[EXT2_IND_BLOCK] -
1389                ib_b->inode.i_block[EXT2_IND_BLOCK]);
1390         if (ret == 0)
1391                 /*
1392                  * We only call process_inodes() for non-extent
1393                  * inodes, so it's OK to pass NULL to
1394                  * ext2fs_file_acl_block() here.
1395                  */
1396                 ret = ext2fs_file_acl_block(0, &(ib_a->inode)) -
1397                         ext2fs_file_acl_block(0, &(ib_b->inode));
1398         if (ret == 0)
1399                 ret = ib_a->ino - ib_b->ino;
1400         return ret;
1401 }
1402
1403 /*
1404  * Mark an inode as being bad in some what
1405  */
1406 static void mark_inode_bad(e2fsck_t ctx, ino_t ino)
1407 {
1408         struct          problem_context pctx;
1409
1410         if (!ctx->inode_bad_map) {
1411                 clear_problem_context(&pctx);
1412
1413                 pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
1414                                 _("bad inode map"), EXT2FS_BMAP64_RBTREE,
1415                                 "inode_bad_map", &ctx->inode_bad_map);
1416                 if (pctx.errcode) {
1417                         pctx.num = 3;
1418                         fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1419                         /* Should never get here */
1420                         ctx->flags |= E2F_FLAG_ABORT;
1421                         return;
1422                 }
1423         }
1424         ext2fs_mark_inode_bitmap2(ctx->inode_bad_map, ino);
1425 }
1426
1427
1428 /*
1429  * This procedure will allocate the inode "bb" (badblock) map table
1430  */
1431 static void alloc_bb_map(e2fsck_t ctx)
1432 {
1433         struct          problem_context pctx;
1434
1435         clear_problem_context(&pctx);
1436         pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
1437                         _("inode in bad block map"), EXT2FS_BMAP64_RBTREE,
1438                         "inode_bb_map", &ctx->inode_bb_map);
1439         if (pctx.errcode) {
1440                 pctx.num = 4;
1441                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1442                 /* Should never get here */
1443                 ctx->flags |= E2F_FLAG_ABORT;
1444                 return;
1445         }
1446 }
1447
1448 /*
1449  * This procedure will allocate the inode imagic table
1450  */
1451 static void alloc_imagic_map(e2fsck_t ctx)
1452 {
1453         struct          problem_context pctx;
1454
1455         clear_problem_context(&pctx);
1456         pctx.errcode = e2fsck_allocate_inode_bitmap(ctx->fs,
1457                         _("imagic inode map"), EXT2FS_BMAP64_RBTREE,
1458                         "inode_imagic_map", &ctx->inode_imagic_map);
1459         if (pctx.errcode) {
1460                 pctx.num = 5;
1461                 fix_problem(ctx, PR_1_ALLOCATE_IBITMAP_ERROR, &pctx);
1462                 /* Should never get here */
1463                 ctx->flags |= E2F_FLAG_ABORT;
1464                 return;
1465         }
1466 }
1467
1468 /*
1469  * Marks a block as in use, setting the dup_map if it's been set
1470  * already.  Called by process_block and process_bad_block.
1471  *
1472  * WARNING: Assumes checks have already been done to make sure block
1473  * is valid.  This is true in both process_block and process_bad_block.
1474  */
1475 static _INLINE_ void mark_block_used(e2fsck_t ctx, blk64_t block)
1476 {
1477         struct          problem_context pctx;
1478
1479         clear_problem_context(&pctx);
1480
1481         if (ext2fs_fast_test_block_bitmap2(ctx->block_found_map, block)) {
1482                 if (!ctx->block_dup_map) {
1483                         pctx.errcode = e2fsck_allocate_block_bitmap(ctx->fs,
1484                                         _("multiply claimed block map"),
1485                                         EXT2FS_BMAP64_RBTREE, "block_dup_map",
1486                                         &ctx->block_dup_map);
1487                         if (pctx.errcode) {
1488                                 pctx.num = 3;
1489                                 fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR,
1490                                             &pctx);
1491                                 /* Should never get here */
1492                                 ctx->flags |= E2F_FLAG_ABORT;
1493                                 return;
1494                         }
1495                 }
1496                 ext2fs_fast_mark_block_bitmap2(ctx->block_dup_map, block);
1497         } else {
1498                 ext2fs_fast_mark_block_bitmap2(ctx->block_found_map, block);
1499         }
1500 }
1501
1502 static _INLINE_ void mark_blocks_used(e2fsck_t ctx, blk64_t block,
1503                                       unsigned int num)
1504 {
1505         if (ext2fs_test_block_bitmap_range2(ctx->block_found_map, block, num))
1506                 ext2fs_mark_block_bitmap_range2(ctx->block_found_map, block, num);
1507         else
1508                 while (num--)
1509                         mark_block_used(ctx, block++);
1510 }
1511
1512 /*
1513  * Adjust the extended attribute block's reference counts at the end
1514  * of pass 1, either by subtracting out references for EA blocks that
1515  * are still referenced in ctx->refcount, or by adding references for
1516  * EA blocks that had extra references as accounted for in
1517  * ctx->refcount_extra.
1518  */
1519 static void adjust_extattr_refcount(e2fsck_t ctx, ext2_refcount_t refcount,
1520                                     char *block_buf, int adjust_sign)
1521 {
1522         struct ext2_ext_attr_header     *header;
1523         struct problem_context          pctx;
1524         ext2_filsys                     fs = ctx->fs;
1525         blk64_t                         blk;
1526         __u32                           should_be;
1527         int                             count;
1528
1529         clear_problem_context(&pctx);
1530
1531         ea_refcount_intr_begin(refcount);
1532         while (1) {
1533                 if ((blk = ea_refcount_intr_next(refcount, &count)) == 0)
1534                         break;
1535                 pctx.blk = blk;
1536                 pctx.errcode = ext2fs_read_ext_attr3(fs, blk, block_buf,
1537                                                      pctx.ino);
1538                 if (pctx.errcode) {
1539                         fix_problem(ctx, PR_1_EXTATTR_READ_ABORT, &pctx);
1540                         return;
1541                 }
1542                 header = (struct ext2_ext_attr_header *) block_buf;
1543                 pctx.blkcount = header->h_refcount;
1544                 should_be = header->h_refcount + adjust_sign * count;
1545                 pctx.num = should_be;
1546                 if (fix_problem(ctx, PR_1_EXTATTR_REFCOUNT, &pctx)) {
1547                         header->h_refcount = should_be;
1548                         pctx.errcode = ext2fs_write_ext_attr3(fs, blk,
1549                                                              block_buf,
1550                                                              pctx.ino);
1551                         if (pctx.errcode) {
1552                                 fix_problem(ctx, PR_1_EXTATTR_WRITE_ABORT,
1553                                             &pctx);
1554                                 continue;
1555                         }
1556                 }
1557         }
1558 }
1559
1560 /*
1561  * Handle processing the extended attribute blocks
1562  */
1563 static int check_ext_attr(e2fsck_t ctx, struct problem_context *pctx,
1564                            char *block_buf)
1565 {
1566         ext2_filsys fs = ctx->fs;
1567         ext2_ino_t      ino = pctx->ino;
1568         struct ext2_inode *inode = pctx->inode;
1569         blk64_t         blk;
1570         char *          end;
1571         struct ext2_ext_attr_header *header;
1572         struct ext2_ext_attr_entry *entry;
1573         int             count;
1574         region_t        region = 0;
1575         int             failed_csum = 0;
1576
1577         blk = ext2fs_file_acl_block(fs, inode);
1578         if (blk == 0)
1579                 return 0;
1580
1581         /*
1582          * If the Extended attribute flag isn't set, then a non-zero
1583          * file acl means that the inode is corrupted.
1584          *
1585          * Or if the extended attribute block is an invalid block,
1586          * then the inode is also corrupted.
1587          */
1588         if (!(fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_EXT_ATTR) ||
1589             (blk < fs->super->s_first_data_block) ||
1590             (blk >= ext2fs_blocks_count(fs->super))) {
1591                 mark_inode_bad(ctx, ino);
1592                 return 0;
1593         }
1594
1595         /* If ea bitmap hasn't been allocated, create it */
1596         if (!ctx->block_ea_map) {
1597                 pctx->errcode = e2fsck_allocate_block_bitmap(fs,
1598                                         _("ext attr block map"),
1599                                         EXT2FS_BMAP64_RBTREE, "block_ea_map",
1600                                         &ctx->block_ea_map);
1601                 if (pctx->errcode) {
1602                         pctx->num = 2;
1603                         fix_problem(ctx, PR_1_ALLOCATE_BBITMAP_ERROR, pctx);
1604                         ctx->flags |= E2F_FLAG_ABORT;
1605                         return 0;
1606                 }
1607         }
1608
1609         /* Create the EA refcount structure if necessary */
1610         if (!ctx->refcount) {
1611                 pctx->errcode = ea_refcount_create(0, &ctx->refcount);
1612                 if (pctx->errcode) {
1613                         pctx->num = 1;
1614                         fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
1615                         ctx->flags |= E2F_FLAG_ABORT;
1616                         return 0;
1617                 }
1618         }
1619
1620 #if 0
1621         /* Debugging text */
1622         printf("Inode %u has EA block %u\n", ino, blk);
1623 #endif
1624
1625         /* Have we seen this EA block before? */
1626         if (ext2fs_fast_test_block_bitmap2(ctx->block_ea_map, blk)) {
1627                 if (ea_refcount_decrement(ctx->refcount, blk, 0) == 0)
1628                         return 1;
1629                 /* Ooops, this EA was referenced more than it stated */
1630                 if (!ctx->refcount_extra) {
1631                         pctx->errcode = ea_refcount_create(0,
1632                                            &ctx->refcount_extra);
1633                         if (pctx->errcode) {
1634                                 pctx->num = 2;
1635                                 fix_problem(ctx, PR_1_ALLOCATE_REFCOUNT, pctx);
1636                                 ctx->flags |= E2F_FLAG_ABORT;
1637                                 return 0;
1638                         }
1639                 }
1640                 ea_refcount_increment(ctx->refcount_extra, blk, 0);
1641                 return 1;
1642         }
1643
1644         /*
1645          * OK, we haven't seen this EA block yet.  So we need to
1646          * validate it
1647          */
1648         pctx->blk = blk;
1649         pctx->errcode = ext2fs_read_ext_attr3(fs, blk, block_buf, pctx->ino);
1650         if (pctx->errcode == EXT2_ET_EXT_ATTR_CSUM_INVALID) {
1651                 if (fix_problem(ctx, PR_1_EA_BLOCK_CSUM_INVALID, pctx))
1652                         goto clear_extattr;
1653                 failed_csum = 1;
1654         }
1655         if (pctx->errcode && fix_problem(ctx, PR_1_READ_EA_BLOCK, pctx))
1656                 goto clear_extattr;
1657         header = (struct ext2_ext_attr_header *) block_buf;
1658         pctx->blk = ext2fs_file_acl_block(fs, inode);
1659         if (((ctx->ext_attr_ver == 1) &&
1660              (header->h_magic != EXT2_EXT_ATTR_MAGIC_v1)) ||
1661             ((ctx->ext_attr_ver == 2) &&
1662              (header->h_magic != EXT2_EXT_ATTR_MAGIC))) {
1663                 if (fix_problem(ctx, PR_1_BAD_EA_BLOCK, pctx))
1664                         goto clear_extattr;
1665         }
1666
1667         if (header->h_blocks != 1) {
1668                 if (fix_problem(ctx, PR_1_EA_MULTI_BLOCK, pctx))
1669                         goto clear_extattr;
1670         }
1671
1672         region = region_create(0, fs->blocksize);
1673         if (!region) {
1674                 fix_problem(ctx, PR_1_EA_ALLOC_REGION_ABORT, pctx);
1675                 ctx->flags |= E2F_FLAG_ABORT;
1676                 return 0;
1677         }
1678         if (region_allocate(region, 0, sizeof(struct ext2_ext_attr_header))) {
1679                 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
1680                         goto clear_extattr;
1681         }
1682
1683         entry = (struct ext2_ext_attr_entry *)(header+1);
1684         end = block_buf + fs->blocksize;
1685         while ((char *)entry < end && *(__u32 *)entry) {
1686                 __u32 hash;
1687
1688                 if (region_allocate(region, (char *)entry - (char *)header,
1689                                    EXT2_EXT_ATTR_LEN(entry->e_name_len))) {
1690                         if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
1691                                 goto clear_extattr;
1692                         break;
1693                 }
1694                 if ((ctx->ext_attr_ver == 1 &&
1695                      (entry->e_name_len == 0 || entry->e_name_index != 0)) ||
1696                     (ctx->ext_attr_ver == 2 &&
1697                      entry->e_name_index == 0)) {
1698                         if (fix_problem(ctx, PR_1_EA_BAD_NAME, pctx))
1699                                 goto clear_extattr;
1700                         break;
1701                 }
1702                 if (entry->e_value_block != 0) {
1703                         if (fix_problem(ctx, PR_1_EA_BAD_VALUE, pctx))
1704                                 goto clear_extattr;
1705                 }
1706                 if (entry->e_value_offs + entry->e_value_size > fs->blocksize) {
1707                         if (fix_problem(ctx, PR_1_EA_BAD_VALUE, pctx))
1708                                 goto clear_extattr;
1709                         break;
1710                 }
1711                 if (entry->e_value_size &&
1712                     region_allocate(region, entry->e_value_offs,
1713                                     EXT2_EXT_ATTR_SIZE(entry->e_value_size))) {
1714                         if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
1715                                 goto clear_extattr;
1716                 }
1717
1718                 hash = ext2fs_ext_attr_hash_entry(entry, block_buf +
1719                                                          entry->e_value_offs);
1720
1721                 if (entry->e_hash != hash) {
1722                         pctx->num = entry->e_hash;
1723                         if (fix_problem(ctx, PR_1_ATTR_HASH, pctx))
1724                                 goto clear_extattr;
1725                         entry->e_hash = hash;
1726                 }
1727
1728                 entry = EXT2_EXT_ATTR_NEXT(entry);
1729         }
1730         if (region_allocate(region, (char *)entry - (char *)header, 4)) {
1731                 if (fix_problem(ctx, PR_1_EA_ALLOC_COLLISION, pctx))
1732                         goto clear_extattr;
1733         }
1734         region_free(region);
1735
1736         /*
1737          * We only get here if there was no other errors that were fixed.
1738          * If there was a checksum fail, ask to correct it.
1739          */
1740         if (failed_csum &&
1741             fix_problem(ctx, PR_1_EA_BLOCK_ONLY_CSUM_INVALID, pctx)) {
1742                 pctx->errcode = ext2fs_write_ext_attr3(fs, blk, block_buf,
1743                                                        pctx->ino);
1744                 if (pctx->errcode)
1745                         return 0;
1746         }
1747
1748         count = header->h_refcount - 1;
1749         if (count)
1750                 ea_refcount_store(ctx->refcount, blk, count);
1751         mark_block_used(ctx, blk);
1752         ext2fs_fast_mark_block_bitmap2(ctx->block_ea_map, blk);
1753         return 1;
1754
1755 clear_extattr:
1756         if (region)
1757                 region_free(region);
1758         ext2fs_file_acl_block_set(fs, inode, 0);
1759         e2fsck_write_inode(ctx, ino, inode, "check_ext_attr");
1760         return 0;
1761 }
1762
1763 /* Returns 1 if bad htree, 0 if OK */
1764 static int handle_htree(e2fsck_t ctx, struct problem_context *pctx,
1765                         ext2_ino_t ino, struct ext2_inode *inode,
1766                         char *block_buf)
1767 {
1768         struct ext2_dx_root_info        *root;
1769         ext2_filsys                     fs = ctx->fs;
1770         errcode_t                       retval;
1771         blk64_t                         blk;
1772
1773         if ((!LINUX_S_ISDIR(inode->i_mode) &&
1774              fix_problem(ctx, PR_1_HTREE_NODIR, pctx)) ||
1775             (!(fs->super->s_feature_compat & EXT2_FEATURE_COMPAT_DIR_INDEX) &&
1776              fix_problem(ctx, PR_1_HTREE_SET, pctx)))
1777                 return 1;
1778
1779         pctx->errcode = ext2fs_bmap2(fs, ino, inode, 0, 0, 0, 0, &blk);
1780
1781         if ((pctx->errcode) ||
1782             (blk == 0) ||
1783             (blk < fs->super->s_first_data_block) ||
1784             (blk >= ext2fs_blocks_count(fs->super))) {
1785                 if (fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
1786                         return 1;
1787                 else
1788                         return 0;
1789         }
1790
1791         retval = io_channel_read_blk64(fs->io, blk, 1, block_buf);
1792         if (retval && fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
1793                 return 1;
1794
1795         /* XXX should check that beginning matches a directory */
1796         root = (struct ext2_dx_root_info *) (block_buf + 24);
1797
1798         if ((root->reserved_zero || root->info_length < 8) &&
1799             fix_problem(ctx, PR_1_HTREE_BADROOT, pctx))
1800                 return 1;
1801
1802         pctx->num = root->hash_version;
1803         if ((root->hash_version != EXT2_HASH_LEGACY) &&
1804             (root->hash_version != EXT2_HASH_HALF_MD4) &&
1805             (root->hash_version != EXT2_HASH_TEA) &&
1806             fix_problem(ctx, PR_1_HTREE_HASHV, pctx))
1807                 return 1;
1808
1809         if ((root->unused_flags & EXT2_HASH_FLAG_INCOMPAT) &&
1810             fix_problem(ctx, PR_1_HTREE_INCOMPAT, pctx))
1811                 return 1;
1812
1813         pctx->num = root->indirect_levels;
1814         if ((root->indirect_levels > 1) &&
1815             fix_problem(ctx, PR_1_HTREE_DEPTH, pctx))
1816                 return 1;
1817
1818         return 0;
1819 }
1820
1821 void e2fsck_clear_inode(e2fsck_t ctx, ext2_ino_t ino,
1822                         struct ext2_inode *inode, int restart_flag,
1823                         const char *source)
1824 {
1825         inode->i_flags = 0;
1826         inode->i_links_count = 0;
1827         ext2fs_icount_store(ctx->inode_link_info, ino, 0);
1828         inode->i_dtime = ctx->now;
1829
1830         ext2fs_unmark_inode_bitmap2(ctx->inode_dir_map, ino);
1831         ext2fs_unmark_inode_bitmap2(ctx->inode_used_map, ino);
1832         if (ctx->inode_reg_map)
1833                 ext2fs_unmark_inode_bitmap2(ctx->inode_reg_map, ino);
1834         if (ctx->inode_bad_map)
1835                 ext2fs_unmark_inode_bitmap2(ctx->inode_bad_map, ino);
1836
1837         /*
1838          * If the inode was partially accounted for before processing
1839          * was aborted, we need to restart the pass 1 scan.
1840          */
1841         ctx->flags |= restart_flag;
1842
1843         if (ino == EXT2_BAD_INO)
1844                 memset(inode, 0, sizeof(struct ext2_inode));
1845
1846         e2fsck_write_inode(ctx, ino, inode, source);
1847 }
1848
1849 static void scan_extent_node(e2fsck_t ctx, struct problem_context *pctx,
1850                              struct process_block_struct *pb,
1851                              blk64_t start_block, blk64_t end_block,
1852                              ext2_extent_handle_t ehandle)
1853 {
1854         struct ext2fs_extent    extent;
1855         blk64_t                 blk, last_lblk;
1856         e2_blkcnt_t             blockcnt;
1857         unsigned int            i;
1858         int                     is_dir, is_leaf;
1859         errcode_t               problem;
1860         struct ext2_extent_info info;
1861         int                     failed_csum;
1862
1863         pctx->errcode = ext2fs_extent_get_info(ehandle, &info);
1864         if (pctx->errcode)
1865                 return;
1866
1867         pctx->errcode = ext2fs_extent_get(ehandle, EXT2_EXTENT_FIRST_SIB,
1868                                           &extent);
1869         while ((pctx->errcode == 0 ||
1870                 pctx->errcode == EXT2_ET_EXTENT_CSUM_INVALID) &&
1871                info.num_entries-- > 0) {
1872                 failed_csum = 0;
1873                 is_leaf = extent.e_flags & EXT2_EXTENT_FLAGS_LEAF;
1874                 is_dir = LINUX_S_ISDIR(pctx->inode->i_mode);
1875                 last_lblk = extent.e_lblk + extent.e_len - 1;
1876
1877                 problem = 0;
1878                 /* Ask to clear a corrupt extent block */
1879                 if (pctx->errcode == EXT2_ET_EXTENT_CSUM_INVALID) {
1880                         pctx->blk = extent.e_pblk;
1881                         pctx->blk2 = extent.e_lblk;
1882                         pctx->num = extent.e_len;
1883                         problem = PR_1_EXTENT_CSUM_INVALID;
1884                         if (fix_problem(ctx, problem, pctx))
1885                                 goto fix_problem_now;
1886                         failed_csum = 1;
1887                 }
1888
1889                 if (extent.e_pblk == 0 ||
1890                     extent.e_pblk < ctx->fs->super->s_first_data_block ||
1891                     extent.e_pblk >= ext2fs_blocks_count(ctx->fs->super))
1892                         problem = PR_1_EXTENT_BAD_START_BLK;
1893                 else if (extent.e_lblk < start_block)
1894                         problem = PR_1_OUT_OF_ORDER_EXTENTS;
1895                 else if (end_block && last_lblk > end_block)
1896                         problem = PR_1_EXTENT_END_OUT_OF_BOUNDS;
1897                 else if (is_leaf && extent.e_len == 0)
1898                         problem = PR_1_EXTENT_LENGTH_ZERO;
1899                 else if (is_leaf &&
1900                          (extent.e_pblk + extent.e_len) >
1901                          ext2fs_blocks_count(ctx->fs->super))
1902                         problem = PR_1_EXTENT_ENDS_BEYOND;
1903
1904                 /* Corrupt but passes checks?  Ask to fix checksum. */
1905                 if (failed_csum) {
1906                         pctx->blk = extent.e_pblk;
1907                         pctx->blk2 = extent.e_lblk;
1908                         pctx->num = extent.e_len;
1909                         problem = 0;
1910                         if (fix_problem(ctx, PR_1_EXTENT_ONLY_CSUM_INVALID,
1911                                         pctx))
1912                                 ext2fs_extent_replace(ehandle, 0, &extent);
1913                 }
1914
1915                 if (problem) {
1916 report_problem:
1917                         pctx->blk = extent.e_pblk;
1918                         pctx->blk2 = extent.e_lblk;
1919                         pctx->num = extent.e_len;
1920                         if (fix_problem(ctx, problem, pctx)) {
1921 fix_problem_now:
1922                                 e2fsck_read_bitmaps(ctx);
1923                                 pctx->errcode =
1924                                         ext2fs_extent_delete(ehandle, 0);
1925                                 if (pctx->errcode) {
1926                                         pctx->str = "ext2fs_extent_delete";
1927                                         return;
1928                                 }
1929                                 ext2fs_extent_fix_parents(ehandle);
1930                                 pctx->errcode = ext2fs_extent_get(ehandle,
1931                                                                   EXT2_EXTENT_CURRENT,
1932                                                                   &extent);
1933                                 if (pctx->errcode == EXT2_ET_NO_CURRENT_NODE) {
1934                                         pctx->errcode = 0;
1935                                         break;
1936                                 }
1937                                 continue;
1938                         }
1939                         goto next;
1940                 }
1941
1942                 if (!is_leaf) {
1943                         blk64_t lblk = extent.e_lblk;
1944
1945                         blk = extent.e_pblk;
1946                         pctx->errcode = ext2fs_extent_get(ehandle,
1947                                                   EXT2_EXTENT_DOWN, &extent);
1948                         if (pctx->errcode) {
1949                                 pctx->str = "EXT2_EXTENT_DOWN";
1950                                 problem = PR_1_EXTENT_HEADER_INVALID;
1951                                 if (pctx->errcode ==
1952                                         EXT2_ET_EXTENT_HEADER_BAD ||
1953                                     pctx->errcode ==
1954                                         EXT2_ET_EXTENT_CSUM_INVALID)
1955                                         goto report_problem;
1956                                 return;
1957                         }
1958                         /* The next extent should match this index's logical start */
1959                         if (extent.e_lblk != lblk) {
1960                                 struct ext2_extent_info e_info;
1961
1962                                 ext2fs_extent_get_info(ehandle, &e_info);
1963                                 pctx->blk = lblk;
1964                                 pctx->blk2 = extent.e_lblk;
1965                                 pctx->num = e_info.curr_level - 1;
1966                                 problem = PR_1_EXTENT_INDEX_START_INVALID;
1967                                 if (fix_problem(ctx, problem, pctx))
1968                                         ext2fs_extent_fix_parents(ehandle);
1969                         }
1970                         scan_extent_node(ctx, pctx, pb, extent.e_lblk,
1971                                          last_lblk, ehandle);
1972                         if (pctx->errcode)
1973                                 return;
1974                         pctx->errcode = ext2fs_extent_get(ehandle,
1975                                                   EXT2_EXTENT_UP, &extent);
1976                         if (pctx->errcode) {
1977                                 pctx->str = "EXT2_EXTENT_UP";
1978                                 return;
1979                         }
1980                         mark_block_used(ctx, blk);
1981                         pb->num_blocks++;
1982                         goto next;
1983                 }
1984
1985                 if ((pb->previous_block != 0) &&
1986                     (pb->previous_block+1 != extent.e_pblk)) {
1987                         if (ctx->options & E2F_OPT_FRAGCHECK) {
1988                                 char type = '?';
1989
1990                                 if (pb->is_dir)
1991                                         type = 'd';
1992                                 else if (pb->is_reg)
1993                                         type = 'f';
1994
1995                                 printf(("%6lu(%c): expecting %6lu "
1996                                         "actual extent "
1997                                         "phys %6lu log %lu len %lu\n"),
1998                                        (unsigned long) pctx->ino, type,
1999                                        (unsigned long) pb->previous_block+1,
2000                                        (unsigned long) extent.e_pblk,
2001                                        (unsigned long) extent.e_lblk,
2002                                        (unsigned long) extent.e_len);
2003                         }
2004                         pb->fragmented = 1;
2005                 }
2006                 while (is_dir && (++pb->last_db_block <
2007                                   (e2_blkcnt_t) extent.e_lblk)) {
2008                         pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist,
2009                                                               pb->ino, 0,
2010                                                               pb->last_db_block);
2011                         if (pctx->errcode) {
2012                                 pctx->blk = 0;
2013                                 pctx->num = pb->last_db_block;
2014                                 goto failed_add_dir_block;
2015                         }
2016                 }
2017                 if (!ctx->fs->cluster_ratio_bits) {
2018                         mark_blocks_used(ctx, extent.e_pblk, extent.e_len);
2019                         pb->num_blocks += extent.e_len;
2020                 }
2021                 for (blk = extent.e_pblk, blockcnt = extent.e_lblk, i = 0;
2022                      i < extent.e_len;
2023                      blk++, blockcnt++, i++) {
2024                         if (ctx->fs->cluster_ratio_bits &&
2025                             !(pb->previous_block &&
2026                               (EXT2FS_B2C(ctx->fs, blk) ==
2027                                EXT2FS_B2C(ctx->fs, pb->previous_block)) &&
2028                               (blk & EXT2FS_CLUSTER_MASK(ctx->fs)) ==
2029                               ((unsigned) blockcnt & EXT2FS_CLUSTER_MASK(ctx->fs)))) {
2030                                 mark_block_used(ctx, blk);
2031                                 pb->num_blocks++;
2032                         }
2033
2034                         pb->previous_block = blk;
2035
2036                         if (is_dir) {
2037                                 pctx->errcode = ext2fs_add_dir_block2(ctx->fs->dblist, pctx->ino, blk, blockcnt);
2038                                 if (pctx->errcode) {
2039                                         pctx->blk = blk;
2040                                         pctx->num = blockcnt;
2041                                 failed_add_dir_block:
2042                                         fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
2043                                         /* Should never get here */
2044                                         ctx->flags |= E2F_FLAG_ABORT;
2045                                         return;
2046                                 }
2047                         }
2048                 }
2049                 if (is_dir && extent.e_len > 0)
2050                         pb->last_db_block = blockcnt - 1;
2051                 pb->previous_block = extent.e_pblk + extent.e_len - 1;
2052                 start_block = pb->last_block = last_lblk;
2053                 if (is_leaf && !is_dir &&
2054                     !(extent.e_flags & EXT2_EXTENT_FLAGS_UNINIT))
2055                         pb->last_init_lblock = last_lblk;
2056         next:
2057                 pctx->errcode = ext2fs_extent_get(ehandle,
2058                                                   EXT2_EXTENT_NEXT_SIB,
2059                                                   &extent);
2060         }
2061         if (pctx->errcode == EXT2_ET_EXTENT_NO_NEXT)
2062                 pctx->errcode = 0;
2063 }
2064
2065 static void check_blocks_extents(e2fsck_t ctx, struct problem_context *pctx,
2066                                  struct process_block_struct *pb)
2067 {
2068         struct ext2_extent_info info;
2069         struct ext2_inode       *inode = pctx->inode;
2070         ext2_extent_handle_t    ehandle;
2071         ext2_filsys             fs = ctx->fs;
2072         ext2_ino_t              ino = pctx->ino;
2073         errcode_t               retval;
2074
2075         pctx->errcode = ext2fs_extent_open2(fs, ino, inode, &ehandle);
2076         if (pctx->errcode) {
2077                 if (fix_problem(ctx, PR_1_READ_EXTENT, pctx))
2078                         e2fsck_clear_inode(ctx, ino, inode, 0,
2079                                            "check_blocks_extents");
2080                 pctx->errcode = 0;
2081                 return;
2082         }
2083
2084         retval = ext2fs_extent_get_info(ehandle, &info);
2085         if (retval == 0) {
2086                 if (info.max_depth >= MAX_EXTENT_DEPTH_COUNT)
2087                         info.max_depth = MAX_EXTENT_DEPTH_COUNT-1;
2088                 ctx->extent_depth_count[info.max_depth]++;
2089         }
2090
2091         scan_extent_node(ctx, pctx, pb, 0, 0, ehandle);
2092         if (pctx->errcode &&
2093             fix_problem(ctx, PR_1_EXTENT_ITERATE_FAILURE, pctx)) {
2094                 pb->num_blocks = 0;
2095                 inode->i_blocks = 0;
2096                 e2fsck_clear_inode(ctx, ino, inode, E2F_FLAG_RESTART,
2097                                    "check_blocks_extents");
2098                 pctx->errcode = 0;
2099         }
2100         ext2fs_extent_free(ehandle);
2101 }
2102
2103 /*
2104  * This subroutine is called on each inode to account for all of the
2105  * blocks used by that inode.
2106  */
2107 static void check_blocks(e2fsck_t ctx, struct problem_context *pctx,
2108                          char *block_buf)
2109 {
2110         ext2_filsys fs = ctx->fs;
2111         struct process_block_struct pb;
2112         ext2_ino_t      ino = pctx->ino;
2113         struct ext2_inode *inode = pctx->inode;
2114         int             bad_size = 0;
2115         int             dirty_inode = 0;
2116         int             extent_fs;
2117         __u64           size;
2118
2119         pb.ino = ino;
2120         pb.num_blocks = 0;
2121         pb.last_block = -1;
2122         pb.last_init_lblock = -1;
2123         pb.last_db_block = -1;
2124         pb.num_illegal_blocks = 0;
2125         pb.suppress = 0; pb.clear = 0;
2126         pb.fragmented = 0;
2127         pb.compressed = 0;
2128         pb.previous_block = 0;
2129         pb.is_dir = LINUX_S_ISDIR(inode->i_mode);
2130         pb.is_reg = LINUX_S_ISREG(inode->i_mode);
2131         pb.max_blocks = 1 << (31 - fs->super->s_log_block_size);
2132         pb.inode = inode;
2133         pb.pctx = pctx;
2134         pb.ctx = ctx;
2135         pctx->ino = ino;
2136         pctx->errcode = 0;
2137
2138         extent_fs = (ctx->fs->super->s_feature_incompat &
2139                      EXT3_FEATURE_INCOMPAT_EXTENTS);
2140
2141         if (inode->i_flags & EXT2_COMPRBLK_FL) {
2142                 if (fs->super->s_feature_incompat &
2143                     EXT2_FEATURE_INCOMPAT_COMPRESSION)
2144                         pb.compressed = 1;
2145                 else {
2146                         if (fix_problem(ctx, PR_1_COMPR_SET, pctx)) {
2147                                 inode->i_flags &= ~EXT2_COMPRBLK_FL;
2148                                 dirty_inode++;
2149                         }
2150                 }
2151         }
2152
2153         if (ext2fs_file_acl_block(fs, inode) &&
2154             check_ext_attr(ctx, pctx, block_buf)) {
2155                 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
2156                         goto out;
2157                 pb.num_blocks++;
2158         }
2159
2160         if (ext2fs_inode_has_valid_blocks2(fs, inode)) {
2161                 if (extent_fs && (inode->i_flags & EXT4_EXTENTS_FL))
2162                         check_blocks_extents(ctx, pctx, &pb);
2163                 else {
2164                         pctx->errcode = ext2fs_block_iterate3(fs, ino,
2165                                                 pb.is_dir ? BLOCK_FLAG_HOLE : 0,
2166                                                 block_buf, process_block, &pb);
2167                         /*
2168                          * We do not have uninitialized extents in non extent
2169                          * files.
2170                          */
2171                         pb.last_init_lblock = pb.last_block;
2172                 }
2173         }
2174         end_problem_latch(ctx, PR_LATCH_BLOCK);
2175         end_problem_latch(ctx, PR_LATCH_TOOBIG);
2176         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
2177                 goto out;
2178         if (pctx->errcode)
2179                 fix_problem(ctx, PR_1_BLOCK_ITERATE, pctx);
2180
2181         if (pb.fragmented && pb.num_blocks < fs->super->s_blocks_per_group) {
2182                 if (LINUX_S_ISDIR(inode->i_mode))
2183                         ctx->fs_fragmented_dir++;
2184                 else
2185                         ctx->fs_fragmented++;
2186         }
2187
2188         if (pb.clear) {
2189                 e2fsck_clear_inode(ctx, ino, inode, E2F_FLAG_RESTART,
2190                                    "check_blocks");
2191                 return;
2192         }
2193
2194         if (inode->i_flags & EXT2_INDEX_FL) {
2195                 if (handle_htree(ctx, pctx, ino, inode, block_buf)) {
2196                         inode->i_flags &= ~EXT2_INDEX_FL;
2197                         dirty_inode++;
2198                 } else {
2199 #ifdef ENABLE_HTREE
2200                         e2fsck_add_dx_dir(ctx, ino, pb.last_block+1);
2201 #endif
2202                 }
2203         }
2204
2205         if (!pb.num_blocks && pb.is_dir) {
2206                 if (fix_problem(ctx, PR_1_ZERO_LENGTH_DIR, pctx)) {
2207                         e2fsck_clear_inode(ctx, ino, inode, 0, "check_blocks");
2208                         ctx->fs_directory_count--;
2209                         return;
2210                 }
2211         }
2212
2213         if (ino == EXT2_ROOT_INO || ino >= EXT2_FIRST_INODE(ctx->fs->super)) {
2214                 quota_data_add(ctx->qctx, inode, ino,
2215                                pb.num_blocks * fs->blocksize);
2216                 quota_data_inodes(ctx->qctx, inode, ino, +1);
2217         }
2218
2219         if (!(fs->super->s_feature_ro_compat &
2220               EXT4_FEATURE_RO_COMPAT_HUGE_FILE) ||
2221             !(inode->i_flags & EXT4_HUGE_FILE_FL))
2222                 pb.num_blocks *= (fs->blocksize / 512);
2223         pb.num_blocks *= EXT2FS_CLUSTER_RATIO(fs);
2224 #if 0
2225         printf("inode %u, i_size = %u, last_block = %lld, i_blocks=%llu, num_blocks = %llu\n",
2226                ino, inode->i_size, pb.last_block, ext2fs_inode_i_blocks(fs, inode),
2227                pb.num_blocks);
2228 #endif
2229         if (pb.is_dir) {
2230                 int nblock = inode->i_size >> EXT2_BLOCK_SIZE_BITS(fs->super);
2231                 if (inode->i_size & (fs->blocksize - 1))
2232                         bad_size = 5;
2233                 else if (nblock > (pb.last_block + 1))
2234                         bad_size = 1;
2235                 else if (nblock < (pb.last_block + 1)) {
2236                         if (((pb.last_block + 1) - nblock) >
2237                             fs->super->s_prealloc_dir_blocks)
2238                                 bad_size = 2;
2239                 }
2240         } else {
2241                 e2_blkcnt_t blkpg = ctx->blocks_per_page;
2242
2243                 size = EXT2_I_SIZE(inode);
2244                 if ((pb.last_init_lblock >= 0) &&
2245                     /* allow allocated blocks to end of PAGE_SIZE */
2246                     (size < (__u64)pb.last_init_lblock * fs->blocksize) &&
2247                     (pb.last_init_lblock / blkpg * blkpg != pb.last_init_lblock ||
2248                      size < (__u64)(pb.last_init_lblock & ~(blkpg-1)) *
2249                      fs->blocksize))
2250                         bad_size = 3;
2251                 else if (!(extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) &&
2252                          size > ext2_max_sizes[fs->super->s_log_block_size])
2253                         /* too big for a direct/indirect-mapped file */
2254                         bad_size = 4;
2255                 else if ((extent_fs && (inode->i_flags & EXT4_EXTENTS_FL)) &&
2256                          size >
2257                          ((1ULL << (32 + EXT2_BLOCK_SIZE_BITS(fs->super))) - 1))
2258                         /* too big for an extent-based file - 32bit ee_block */
2259                         bad_size = 6;
2260         }
2261         /* i_size for symlinks is checked elsewhere */
2262         if (bad_size && !LINUX_S_ISLNK(inode->i_mode)) {
2263                 pctx->num = (pb.last_block+1) * fs->blocksize;
2264                 pctx->group = bad_size;
2265                 if (fix_problem(ctx, PR_1_BAD_I_SIZE, pctx)) {
2266                         inode->i_size = pctx->num;
2267                         if (!LINUX_S_ISDIR(inode->i_mode))
2268                                 inode->i_size_high = pctx->num >> 32;
2269                         dirty_inode++;
2270                 }
2271                 pctx->num = 0;
2272         }
2273         if (LINUX_S_ISREG(inode->i_mode) && EXT2_I_SIZE(inode) >= 0x80000000UL)
2274                 ctx->large_files++;
2275         if ((pb.num_blocks != ext2fs_inode_i_blocks(fs, inode)) ||
2276             ((fs->super->s_feature_ro_compat &
2277               EXT4_FEATURE_RO_COMPAT_HUGE_FILE) &&
2278              (inode->i_flags & EXT4_HUGE_FILE_FL) &&
2279              (inode->osd2.linux2.l_i_blocks_hi != 0))) {
2280                 pctx->num = pb.num_blocks;
2281                 if (fix_problem(ctx, PR_1_BAD_I_BLOCKS, pctx)) {
2282                         inode->i_blocks = pb.num_blocks;
2283                         inode->osd2.linux2.l_i_blocks_hi = pb.num_blocks >> 32;
2284                         dirty_inode++;
2285                 }
2286                 pctx->num = 0;
2287         }
2288
2289         if (ctx->dirs_to_hash && pb.is_dir &&
2290             !(ctx->lost_and_found && ctx->lost_and_found == ino) &&
2291             !(inode->i_flags & EXT2_INDEX_FL) &&
2292             ((inode->i_size / fs->blocksize) >= 3))
2293                 e2fsck_rehash_dir_later(ctx, ino);
2294
2295 out:
2296         if (dirty_inode)
2297                 e2fsck_write_inode(ctx, ino, inode, "check_blocks");
2298 }
2299
2300 #if 0
2301 /*
2302  * Helper function called by process block when an illegal block is
2303  * found.  It returns a description about why the block is illegal
2304  */
2305 static char *describe_illegal_block(ext2_filsys fs, blk64_t block)
2306 {
2307         blk64_t super;
2308         int     i;
2309         static char     problem[80];
2310
2311         super = fs->super->s_first_data_block;
2312         strcpy(problem, "PROGRAMMING ERROR: Unknown reason for illegal block");
2313         if (block < super) {
2314                 sprintf(problem, "< FIRSTBLOCK (%u)", super);
2315                 return(problem);
2316         } else if (block >= ext2fs_blocks_count(fs->super)) {
2317                 sprintf(problem, "> BLOCKS (%u)", ext2fs_blocks_count(fs->super));
2318                 return(problem);
2319         }
2320         for (i = 0; i < fs->group_desc_count; i++) {
2321                 if (block == super) {
2322                         sprintf(problem, "is the superblock in group %d", i);
2323                         break;
2324                 }
2325                 if (block > super &&
2326                     block <= (super + fs->desc_blocks)) {
2327                         sprintf(problem, "is in the group descriptors "
2328                                 "of group %d", i);
2329                         break;
2330                 }
2331                 if (block == ext2fs_block_bitmap_loc(fs, i)) {
2332                         sprintf(problem, "is the block bitmap of group %d", i);
2333                         break;
2334                 }
2335                 if (block == ext2fs_inode_bitmap_loc(fs, i)) {
2336                         sprintf(problem, "is the inode bitmap of group %d", i);
2337                         break;
2338                 }
2339                 if (block >= ext2fs_inode_table_loc(fs, i) &&
2340                     (block < ext2fs_inode_table_loc(fs, i)
2341                      + fs->inode_blocks_per_group)) {
2342                         sprintf(problem, "is in the inode table of group %d",
2343                                 i);
2344                         break;
2345                 }
2346                 super += fs->super->s_blocks_per_group;
2347         }
2348         return(problem);
2349 }
2350 #endif
2351
2352 /*
2353  * This is a helper function for check_blocks().
2354  */
2355 static int process_block(ext2_filsys fs,
2356                   blk64_t       *block_nr,
2357                   e2_blkcnt_t blockcnt,
2358                   blk64_t ref_block EXT2FS_ATTR((unused)),
2359                   int ref_offset EXT2FS_ATTR((unused)),
2360                   void *priv_data)
2361 {
2362         struct process_block_struct *p;
2363         struct problem_context *pctx;
2364         blk64_t blk = *block_nr;
2365         int     ret_code = 0;
2366         int     problem = 0;
2367         e2fsck_t        ctx;
2368
2369         p = (struct process_block_struct *) priv_data;
2370         pctx = p->pctx;
2371         ctx = p->ctx;
2372
2373         if (p->compressed && (blk == EXT2FS_COMPRESSED_BLKADDR)) {
2374                 /* todo: Check that the comprblk_fl is high, that the
2375                    blkaddr pattern looks right (all non-holes up to
2376                    first EXT2FS_COMPRESSED_BLKADDR, then all
2377                    EXT2FS_COMPRESSED_BLKADDR up to end of cluster),
2378                    that the feature_incompat bit is high, and that the
2379                    inode is a regular file.  If we're doing a "full
2380                    check" (a concept introduced to e2fsck by e2compr,
2381                    meaning that we look at data blocks as well as
2382                    metadata) then call some library routine that
2383                    checks the compressed data.  I'll have to think
2384                    about this, because one particularly important
2385                    problem to be able to fix is to recalculate the
2386                    cluster size if necessary.  I think that perhaps
2387                    we'd better do most/all e2compr-specific checks
2388                    separately, after the non-e2compr checks.  If not
2389                    doing a full check, it may be useful to test that
2390                    the personality is linux; e.g. if it isn't then
2391                    perhaps this really is just an illegal block. */
2392                 return 0;
2393         }
2394
2395         if (blk == 0)
2396                 return 0;
2397
2398 #if 0
2399         printf("Process_block, inode %lu, block %u, #%d\n", p->ino, blk,
2400                blockcnt);
2401 #endif
2402
2403         /*
2404          * Simplistic fragmentation check.  We merely require that the
2405          * file be contiguous.  (Which can never be true for really
2406          * big files that are greater than a block group.)
2407          */
2408         if (!HOLE_BLKADDR(p->previous_block) && p->ino != EXT2_RESIZE_INO) {
2409                 if (p->previous_block+1 != blk) {
2410                         if (ctx->options & E2F_OPT_FRAGCHECK) {
2411                                 char type = '?';
2412
2413                                 if (p->is_dir)
2414                                         type = 'd';
2415                                 else if (p->is_reg)
2416                                         type = 'f';
2417
2418                                 printf(_("%6lu(%c): expecting %6lu "
2419                                          "got phys %6lu (blkcnt %lld)\n"),
2420                                        (unsigned long) pctx->ino, type,
2421                                        (unsigned long) p->previous_block+1,
2422                                        (unsigned long) blk,
2423                                        blockcnt);
2424                         }
2425                         p->fragmented = 1;
2426                 }
2427         }
2428
2429         if (p->is_dir && blockcnt > (1 << (21 - fs->super->s_log_block_size)))
2430                 problem = PR_1_TOOBIG_DIR;
2431         if (p->is_reg && p->num_blocks+1 >= p->max_blocks)
2432                 problem = PR_1_TOOBIG_REG;
2433         if (!p->is_dir && !p->is_reg && blockcnt > 0)
2434                 problem = PR_1_TOOBIG_SYMLINK;
2435
2436         if (blk < fs->super->s_first_data_block ||
2437             blk >= ext2fs_blocks_count(fs->super))
2438                 problem = PR_1_ILLEGAL_BLOCK_NUM;
2439
2440         if (problem) {
2441                 p->num_illegal_blocks++;
2442                 if (!p->suppress && (p->num_illegal_blocks % 12) == 0) {
2443                         if (fix_problem(ctx, PR_1_TOO_MANY_BAD_BLOCKS, pctx)) {
2444                                 p->clear = 1;
2445                                 return BLOCK_ABORT;
2446                         }
2447                         if (fix_problem(ctx, PR_1_SUPPRESS_MESSAGES, pctx)) {
2448                                 p->suppress = 1;
2449                                 set_latch_flags(PR_LATCH_BLOCK,
2450                                                 PRL_SUPPRESS, 0);
2451                         }
2452                 }
2453                 pctx->blk = blk;
2454                 pctx->blkcount = blockcnt;
2455                 if (fix_problem(ctx, problem, pctx)) {
2456                         blk = *block_nr = 0;
2457                         ret_code = BLOCK_CHANGED;
2458                         goto mark_dir;
2459                 } else
2460                         return 0;
2461         }
2462
2463         if (p->ino == EXT2_RESIZE_INO) {
2464                 /*
2465                  * The resize inode has already be sanity checked
2466                  * during pass #0 (the superblock checks).  All we
2467                  * have to do is mark the double indirect block as
2468                  * being in use; all of the other blocks are handled
2469                  * by mark_table_blocks()).
2470                  */
2471                 if (blockcnt == BLOCK_COUNT_DIND)
2472                         mark_block_used(ctx, blk);
2473                 p->num_blocks++;
2474         } else if (!(ctx->fs->cluster_ratio_bits &&
2475                      p->previous_block &&
2476                      (EXT2FS_B2C(ctx->fs, blk) ==
2477                       EXT2FS_B2C(ctx->fs, p->previous_block)) &&
2478                      (blk & EXT2FS_CLUSTER_MASK(ctx->fs)) ==
2479                      ((unsigned) blockcnt & EXT2FS_CLUSTER_MASK(ctx->fs)))) {
2480                 mark_block_used(ctx, blk);
2481                 p->num_blocks++;
2482         }
2483         if (blockcnt >= 0)
2484                 p->last_block = blockcnt;
2485         p->previous_block = blk;
2486 mark_dir:
2487         if (p->is_dir && (blockcnt >= 0)) {
2488                 while (++p->last_db_block < blockcnt) {
2489                         pctx->errcode = ext2fs_add_dir_block2(fs->dblist,
2490                                                               p->ino, 0,
2491                                                               p->last_db_block);
2492                         if (pctx->errcode) {
2493                                 pctx->blk = 0;
2494                                 pctx->num = p->last_db_block;
2495                                 goto failed_add_dir_block;
2496                         }
2497                 }
2498                 pctx->errcode = ext2fs_add_dir_block2(fs->dblist, p->ino,
2499                                                       blk, blockcnt);
2500                 if (pctx->errcode) {
2501                         pctx->blk = blk;
2502                         pctx->num = blockcnt;
2503                 failed_add_dir_block:
2504                         fix_problem(ctx, PR_1_ADD_DBLOCK, pctx);
2505                         /* Should never get here */
2506                         ctx->flags |= E2F_FLAG_ABORT;
2507                         return BLOCK_ABORT;
2508                 }
2509         }
2510         return ret_code;
2511 }
2512
2513 static int process_bad_block(ext2_filsys fs,
2514                       blk64_t *block_nr,
2515                       e2_blkcnt_t blockcnt,
2516                       blk64_t ref_block EXT2FS_ATTR((unused)),
2517                       int ref_offset EXT2FS_ATTR((unused)),
2518                       void *priv_data)
2519 {
2520         struct process_block_struct *p;
2521         blk64_t         blk = *block_nr;
2522         blk64_t         first_block;
2523         dgrp_t          i;
2524         struct problem_context *pctx;
2525         e2fsck_t        ctx;
2526
2527         /*
2528          * Note: This function processes blocks for the bad blocks
2529          * inode, which is never compressed.  So we don't use HOLE_BLKADDR().
2530          */
2531
2532         if (!blk)
2533                 return 0;
2534
2535         p = (struct process_block_struct *) priv_data;
2536         ctx = p->ctx;
2537         pctx = p->pctx;
2538
2539         pctx->ino = EXT2_BAD_INO;
2540         pctx->blk = blk;
2541         pctx->blkcount = blockcnt;
2542
2543         if ((blk < fs->super->s_first_data_block) ||
2544             (blk >= ext2fs_blocks_count(fs->super))) {
2545                 if (fix_problem(ctx, PR_1_BB_ILLEGAL_BLOCK_NUM, pctx)) {
2546                         *block_nr = 0;
2547                         return BLOCK_CHANGED;
2548                 } else
2549                         return 0;
2550         }
2551
2552         if (blockcnt < 0) {
2553                 if (ext2fs_test_block_bitmap2(p->fs_meta_blocks, blk)) {
2554                         p->bbcheck = 1;
2555                         if (fix_problem(ctx, PR_1_BB_FS_BLOCK, pctx)) {
2556                                 *block_nr = 0;
2557                                 return BLOCK_CHANGED;
2558                         }
2559                 } else if (ext2fs_test_block_bitmap2(ctx->block_found_map,
2560                                                     blk)) {
2561                         p->bbcheck = 1;
2562                         if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK,
2563                                         pctx)) {
2564                                 *block_nr = 0;
2565                                 return BLOCK_CHANGED;
2566                         }
2567                         if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
2568                                 return BLOCK_ABORT;
2569                 } else
2570                         mark_block_used(ctx, blk);
2571                 return 0;
2572         }
2573 #if 0
2574         printf ("DEBUG: Marking %u as bad.\n", blk);
2575 #endif
2576         ctx->fs_badblocks_count++;
2577         /*
2578          * If the block is not used, then mark it as used and return.
2579          * If it is already marked as found, this must mean that
2580          * there's an overlap between the filesystem table blocks
2581          * (bitmaps and inode table) and the bad block list.
2582          */
2583         if (!ext2fs_test_block_bitmap2(ctx->block_found_map, blk)) {
2584                 ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
2585                 return 0;
2586         }
2587         /*
2588          * Try to find the where the filesystem block was used...
2589          */
2590         first_block = fs->super->s_first_data_block;
2591
2592         for (i = 0; i < fs->group_desc_count; i++ ) {
2593                 pctx->group = i;
2594                 pctx->blk = blk;
2595                 if (!ext2fs_bg_has_super(fs, i))
2596                         goto skip_super;
2597                 if (blk == first_block) {
2598                         if (i == 0) {
2599                                 if (fix_problem(ctx,
2600                                                 PR_1_BAD_PRIMARY_SUPERBLOCK,
2601                                                 pctx)) {
2602                                         *block_nr = 0;
2603                                         return BLOCK_CHANGED;
2604                                 }
2605                                 return 0;
2606                         }
2607                         fix_problem(ctx, PR_1_BAD_SUPERBLOCK, pctx);
2608                         return 0;
2609                 }
2610                 if ((blk > first_block) &&
2611                     (blk <= first_block + fs->desc_blocks)) {
2612                         if (i == 0) {
2613                                 pctx->blk = *block_nr;
2614                                 if (fix_problem(ctx,
2615                         PR_1_BAD_PRIMARY_GROUP_DESCRIPTOR, pctx)) {
2616                                         *block_nr = 0;
2617                                         return BLOCK_CHANGED;
2618                                 }
2619                                 return 0;
2620                         }
2621                         fix_problem(ctx, PR_1_BAD_GROUP_DESCRIPTORS, pctx);
2622                         return 0;
2623                 }
2624         skip_super:
2625                 if (blk == ext2fs_block_bitmap_loc(fs, i)) {
2626                         if (fix_problem(ctx, PR_1_BB_BAD_BLOCK, pctx)) {
2627                                 ctx->invalid_block_bitmap_flag[i]++;
2628                                 ctx->invalid_bitmaps++;
2629                         }
2630                         return 0;
2631                 }
2632                 if (blk == ext2fs_inode_bitmap_loc(fs, i)) {
2633                         if (fix_problem(ctx, PR_1_IB_BAD_BLOCK, pctx)) {
2634                                 ctx->invalid_inode_bitmap_flag[i]++;
2635                                 ctx->invalid_bitmaps++;
2636                         }
2637                         return 0;
2638                 }
2639                 if ((blk >= ext2fs_inode_table_loc(fs, i)) &&
2640                     (blk < (ext2fs_inode_table_loc(fs, i) +
2641                             fs->inode_blocks_per_group))) {
2642                         /*
2643                          * If there are bad blocks in the inode table,
2644                          * the inode scan code will try to do
2645                          * something reasonable automatically.
2646                          */
2647                         return 0;
2648                 }
2649                 first_block += fs->super->s_blocks_per_group;
2650         }
2651         /*
2652          * If we've gotten to this point, then the only
2653          * possibility is that the bad block inode meta data
2654          * is using a bad block.
2655          */
2656         if ((blk == p->inode->i_block[EXT2_IND_BLOCK]) ||
2657             (blk == p->inode->i_block[EXT2_DIND_BLOCK]) ||
2658             (blk == p->inode->i_block[EXT2_TIND_BLOCK])) {
2659                 p->bbcheck = 1;
2660                 if (fix_problem(ctx, PR_1_BBINODE_BAD_METABLOCK, pctx)) {
2661                         *block_nr = 0;
2662                         return BLOCK_CHANGED;
2663                 }
2664                 if (ctx->flags & E2F_FLAG_SIGNAL_MASK)
2665                         return BLOCK_ABORT;
2666                 return 0;
2667         }
2668
2669         pctx->group = -1;
2670
2671         /* Warn user that the block wasn't claimed */
2672         fix_problem(ctx, PR_1_PROGERR_CLAIMED_BLOCK, pctx);
2673
2674         return 0;
2675 }
2676
2677 static void new_table_block(e2fsck_t ctx, blk_t first_block, int group,
2678                             const char *name, int num, blk64_t *new_block)
2679 {
2680         ext2_filsys fs = ctx->fs;
2681         dgrp_t          last_grp;
2682         blk64_t         old_block = *new_block;
2683         blk64_t         last_block;
2684         int             i, is_flexbg, flexbg, flexbg_size;
2685         char            *buf;
2686         struct problem_context  pctx;
2687
2688         clear_problem_context(&pctx);
2689
2690         pctx.group = group;
2691         pctx.blk = old_block;
2692         pctx.str = name;
2693
2694         /*
2695          * For flex_bg filesystems, first try to allocate the metadata
2696          * within the flex_bg, and if that fails then try finding the
2697          * space anywhere in the filesystem.
2698          */
2699         is_flexbg = EXT2_HAS_INCOMPAT_FEATURE(fs->super,
2700                                               EXT4_FEATURE_INCOMPAT_FLEX_BG);
2701         if (is_flexbg) {
2702                 flexbg_size = 1 << fs->super->s_log_groups_per_flex;
2703                 flexbg = group / flexbg_size;
2704                 first_block = ext2fs_group_first_block2(fs,
2705                                                         flexbg_size * flexbg);
2706                 last_grp = group | (flexbg_size - 1);
2707                 if (last_grp > fs->group_desc_count)
2708                         last_grp = fs->group_desc_count;
2709                 last_block = ext2fs_group_last_block2(fs, last_grp);
2710         } else
2711                 last_block = ext2fs_group_last_block2(fs, group);
2712         pctx.errcode = ext2fs_get_free_blocks2(fs, first_block, last_block,
2713                                                num, ctx->block_found_map,
2714                                                new_block);
2715         if (is_flexbg && (pctx.errcode == EXT2_ET_BLOCK_ALLOC_FAIL))
2716                 pctx.errcode = ext2fs_get_free_blocks2(fs,
2717                                 fs->super->s_first_data_block,
2718                                 ext2fs_blocks_count(fs->super),
2719                                 num, ctx->block_found_map, new_block);
2720         if (pctx.errcode) {
2721                 pctx.num = num;
2722                 fix_problem(ctx, PR_1_RELOC_BLOCK_ALLOCATE, &pctx);
2723                 ext2fs_unmark_valid(fs);
2724                 ctx->flags |= E2F_FLAG_ABORT;
2725                 return;
2726         }
2727         pctx.errcode = ext2fs_get_mem(fs->blocksize, &buf);
2728         if (pctx.errcode) {
2729                 fix_problem(ctx, PR_1_RELOC_MEMORY_ALLOCATE, &pctx);
2730                 ext2fs_unmark_valid(fs);
2731                 ctx->flags |= E2F_FLAG_ABORT;
2732                 return;
2733         }
2734         ext2fs_mark_super_dirty(fs);
2735         fs->flags &= ~EXT2_FLAG_MASTER_SB_ONLY;
2736         pctx.blk2 = *new_block;
2737         fix_problem(ctx, (old_block ? PR_1_RELOC_FROM_TO :
2738                           PR_1_RELOC_TO), &pctx);
2739         pctx.blk2 = 0;
2740         for (i = 0; i < num; i++) {
2741                 pctx.blk = i;
2742                 ext2fs_mark_block_bitmap2(ctx->block_found_map, (*new_block)+i);
2743                 if (old_block) {
2744                         pctx.errcode = io_channel_read_blk64(fs->io,
2745                                    old_block + i, 1, buf);
2746                         if (pctx.errcode)
2747                                 fix_problem(ctx, PR_1_RELOC_READ_ERR, &pctx);
2748                 } else
2749                         memset(buf, 0, fs->blocksize);
2750
2751                 pctx.blk = (*new_block) + i;
2752                 pctx.errcode = io_channel_write_blk64(fs->io, pctx.blk,
2753                                               1, buf);
2754                 if (pctx.errcode)
2755                         fix_problem(ctx, PR_1_RELOC_WRITE_ERR, &pctx);
2756         }
2757         ext2fs_free_mem(&buf);
2758 }
2759
2760 /*
2761  * This routine gets called at the end of pass 1 if bad blocks are
2762  * detected in the superblock, group descriptors, inode_bitmaps, or
2763  * block bitmaps.  At this point, all of the blocks have been mapped
2764  * out, so we can try to allocate new block(s) to replace the bad
2765  * blocks.
2766  */
2767 static void handle_fs_bad_blocks(e2fsck_t ctx)
2768 {
2769         ext2_filsys fs = ctx->fs;
2770         dgrp_t          i;
2771         blk64_t         first_block;
2772         blk64_t         new_blk;
2773
2774         for (i = 0; i < fs->group_desc_count; i++) {
2775                 first_block = ext2fs_group_first_block2(fs, i);
2776
2777                 if (ctx->invalid_block_bitmap_flag[i]) {
2778                         new_blk = ext2fs_block_bitmap_loc(fs, i);
2779                         new_table_block(ctx, first_block, i, _("block bitmap"),
2780                                         1, &new_blk);
2781                         ext2fs_block_bitmap_loc_set(fs, i, new_blk);
2782                 }
2783                 if (ctx->invalid_inode_bitmap_flag[i]) {
2784                         new_blk = ext2fs_inode_bitmap_loc(fs, i);
2785                         new_table_block(ctx, first_block, i, _("inode bitmap"),
2786                                         1, &new_blk);
2787                         ext2fs_inode_bitmap_loc_set(fs, i, new_blk);
2788                 }
2789                 if (ctx->invalid_inode_table_flag[i]) {
2790                         new_blk = ext2fs_inode_table_loc(fs, i);
2791                         new_table_block(ctx, first_block, i, _("inode table"),
2792                                         fs->inode_blocks_per_group,
2793                                         &new_blk);
2794                         ext2fs_inode_table_loc_set(fs, i, new_blk);
2795                         ctx->flags |= E2F_FLAG_RESTART;
2796                 }
2797         }
2798         ctx->invalid_bitmaps = 0;
2799 }
2800
2801 /*
2802  * This routine marks all blocks which are used by the superblock,
2803  * group descriptors, inode bitmaps, and block bitmaps.
2804  */
2805 static void mark_table_blocks(e2fsck_t ctx)
2806 {
2807         ext2_filsys fs = ctx->fs;
2808         blk64_t b;
2809         dgrp_t  i;
2810         unsigned int    j;
2811         struct problem_context pctx;
2812
2813         clear_problem_context(&pctx);
2814
2815         for (i = 0; i < fs->group_desc_count; i++) {
2816                 pctx.group = i;
2817
2818                 ext2fs_reserve_super_and_bgd(fs, i, ctx->block_found_map);
2819
2820                 /*
2821                  * Mark the blocks used for the inode table
2822                  */
2823                 if (ext2fs_inode_table_loc(fs, i)) {
2824                         for (j = 0, b = ext2fs_inode_table_loc(fs, i);
2825                              j < fs->inode_blocks_per_group;
2826                              j++, b++) {
2827                                 if (ext2fs_test_block_bitmap2(ctx->block_found_map,
2828                                                              b)) {
2829                                         pctx.blk = b;
2830                                         if (!ctx->invalid_inode_table_flag[i] &&
2831                                             fix_problem(ctx,
2832                                                 PR_1_ITABLE_CONFLICT, &pctx)) {
2833                                                 ctx->invalid_inode_table_flag[i]++;
2834                                                 ctx->invalid_bitmaps++;
2835                                         }
2836                                 } else {
2837                                     ext2fs_mark_block_bitmap2(ctx->block_found_map,
2838                                                              b);
2839                                 }
2840                         }
2841                 }
2842
2843                 /*
2844                  * Mark block used for the block bitmap
2845                  */
2846                 if (ext2fs_block_bitmap_loc(fs, i)) {
2847                         if (ext2fs_test_block_bitmap2(ctx->block_found_map,
2848                                      ext2fs_block_bitmap_loc(fs, i))) {
2849                                 pctx.blk = ext2fs_block_bitmap_loc(fs, i);
2850                                 if (fix_problem(ctx, PR_1_BB_CONFLICT, &pctx)) {
2851                                         ctx->invalid_block_bitmap_flag[i]++;
2852                                         ctx->invalid_bitmaps++;
2853                                 }
2854                         } else {
2855                             ext2fs_mark_block_bitmap2(ctx->block_found_map,
2856                                      ext2fs_block_bitmap_loc(fs, i));
2857                     }
2858
2859                 }
2860                 /*
2861                  * Mark block used for the inode bitmap
2862                  */
2863                 if (ext2fs_inode_bitmap_loc(fs, i)) {
2864                         if (ext2fs_test_block_bitmap2(ctx->block_found_map,
2865                                      ext2fs_inode_bitmap_loc(fs, i))) {
2866                                 pctx.blk = ext2fs_inode_bitmap_loc(fs, i);
2867                                 if (fix_problem(ctx, PR_1_IB_CONFLICT, &pctx)) {
2868                                         ctx->invalid_inode_bitmap_flag[i]++;
2869                                         ctx->invalid_bitmaps++;
2870                                 }
2871                         } else {
2872                             ext2fs_mark_block_bitmap2(ctx->block_found_map,
2873                                      ext2fs_inode_bitmap_loc(fs, i));
2874                         }
2875                 }
2876         }
2877 }
2878
2879 /*
2880  * Thes subroutines short circuits ext2fs_get_blocks and
2881  * ext2fs_check_directory; we use them since we already have the inode
2882  * structure, so there's no point in letting the ext2fs library read
2883  * the inode again.
2884  */
2885 static errcode_t pass1_get_blocks(ext2_filsys fs, ext2_ino_t ino,
2886                                   blk_t *blocks)
2887 {
2888         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
2889         int     i;
2890
2891         if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
2892                 return EXT2_ET_CALLBACK_NOTHANDLED;
2893
2894         for (i=0; i < EXT2_N_BLOCKS; i++)
2895                 blocks[i] = ctx->stashed_inode->i_block[i];
2896         return 0;
2897 }
2898
2899 static errcode_t pass1_read_inode(ext2_filsys fs, ext2_ino_t ino,
2900                                   struct ext2_inode *inode)
2901 {
2902         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
2903
2904         if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
2905                 return EXT2_ET_CALLBACK_NOTHANDLED;
2906         *inode = *ctx->stashed_inode;
2907         return 0;
2908 }
2909
2910 static errcode_t pass1_write_inode(ext2_filsys fs, ext2_ino_t ino,
2911                             struct ext2_inode *inode)
2912 {
2913         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
2914
2915         if ((ino == ctx->stashed_ino) && ctx->stashed_inode &&
2916                 (inode != ctx->stashed_inode))
2917                 *ctx->stashed_inode = *inode;
2918         return EXT2_ET_CALLBACK_NOTHANDLED;
2919 }
2920
2921 static errcode_t pass1_check_directory(ext2_filsys fs, ext2_ino_t ino)
2922 {
2923         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
2924
2925         if ((ino != ctx->stashed_ino) || !ctx->stashed_inode)
2926                 return EXT2_ET_CALLBACK_NOTHANDLED;
2927
2928         if (!LINUX_S_ISDIR(ctx->stashed_inode->i_mode))
2929                 return EXT2_ET_NO_DIRECTORY;
2930         return 0;
2931 }
2932
2933 static errcode_t e2fsck_get_alloc_block(ext2_filsys fs, blk64_t goal,
2934                                         blk64_t *ret)
2935 {
2936         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
2937         errcode_t       retval;
2938         blk64_t         new_block;
2939
2940         if (ctx->block_found_map) {
2941                 retval = ext2fs_new_block2(fs, goal, ctx->block_found_map,
2942                                            &new_block);
2943                 if (retval)
2944                         return retval;
2945                 if (fs->block_map) {
2946                         ext2fs_mark_block_bitmap2(fs->block_map, new_block);
2947                         ext2fs_mark_bb_dirty(fs);
2948                 }
2949         } else {
2950                 if (!fs->block_map) {
2951                         retval = ext2fs_read_block_bitmap(fs);
2952                         if (retval)
2953                                 return retval;
2954                 }
2955
2956                 retval = ext2fs_new_block2(fs, goal, 0, &new_block);
2957                 if (retval)
2958                         return retval;
2959         }
2960
2961         *ret = new_block;
2962         return (0);
2963 }
2964
2965 static void e2fsck_block_alloc_stats(ext2_filsys fs, blk64_t blk, int inuse)
2966 {
2967         e2fsck_t ctx = (e2fsck_t) fs->priv_data;
2968
2969         if (ctx->block_found_map) {
2970                 if (inuse > 0)
2971                         ext2fs_mark_block_bitmap2(ctx->block_found_map, blk);
2972                 else
2973                         ext2fs_unmark_block_bitmap2(ctx->block_found_map, blk);
2974         }
2975 }
2976
2977 void e2fsck_use_inode_shortcuts(e2fsck_t ctx, int use_shortcuts)
2978 {
2979         ext2_filsys fs = ctx->fs;
2980
2981         if (use_shortcuts) {
2982                 fs->get_blocks = pass1_get_blocks;
2983                 fs->check_directory = pass1_check_directory;
2984                 fs->read_inode = pass1_read_inode;
2985                 fs->write_inode = pass1_write_inode;
2986                 ctx->stashed_ino = 0;
2987                 ext2fs_set_alloc_block_callback(fs, e2fsck_get_alloc_block,
2988                                                 0);
2989                 ext2fs_set_block_alloc_stats_callback(fs,
2990                                                       e2fsck_block_alloc_stats,
2991                                                       0);
2992         } else {
2993                 fs->get_blocks = 0;
2994                 fs->check_directory = 0;
2995                 fs->read_inode = 0;
2996                 fs->write_inode = 0;
2997         }
2998 }