lib/ext2fs/swapfs.c

   1 /*
   2  * swapfs.c --- swap ext2 filesystem data structures
   3  *
   4  * Copyright (C) 1995, 1996, 2002 Theodore Ts'o.
   5  *
   6  * %Begin-Header%
   7  * This file may be redistributed under the terms of the GNU Library
   8  * General Public License, version 2.
   9  * %End-Header%
  10  */
  11
  12 #include "config.h"
  13 #include <stdio.h>
  14 #if HAVE_UNISTD_H
  15 #include <unistd.h>
  16 #endif
  17 #include <string.h>
  18 #include <time.h>
  19
  20 #include "ext2_fs.h"
  21 #include "ext2fs.h"
  22 #include <ext2fs/ext2_ext_attr.h>
  23
  24 #ifdef WORDS_BIGENDIAN
  25 void ext2fs_swap_super(struct ext2_super_block * sb)
  26 {
  27         int i;
  28         sb->s_inodes_count = ext2fs_swab32(sb->s_inodes_count);
  29         sb->s_blocks_count = ext2fs_swab32(sb->s_blocks_count);
  30         sb->s_r_blocks_count = ext2fs_swab32(sb->s_r_blocks_count);
  31         sb->s_free_blocks_count = ext2fs_swab32(sb->s_free_blocks_count);
  32         sb->s_free_inodes_count = ext2fs_swab32(sb->s_free_inodes_count);
  33         sb->s_first_data_block = ext2fs_swab32(sb->s_first_data_block);
  34         sb->s_log_block_size = ext2fs_swab32(sb->s_log_block_size);
  35         sb->s_log_cluster_size = ext2fs_swab32(sb->s_log_cluster_size);
  36         sb->s_blocks_per_group = ext2fs_swab32(sb->s_blocks_per_group);
  37         sb->s_clusters_per_group = ext2fs_swab32(sb->s_clusters_per_group);
  38         sb->s_inodes_per_group = ext2fs_swab32(sb->s_inodes_per_group);
  39         sb->s_mtime = ext2fs_swab32(sb->s_mtime);
  40         sb->s_wtime = ext2fs_swab32(sb->s_wtime);
  41         sb->s_mnt_count = ext2fs_swab16(sb->s_mnt_count);
  42         sb->s_max_mnt_count = ext2fs_swab16(sb->s_max_mnt_count);
  43         sb->s_magic = ext2fs_swab16(sb->s_magic);
  44         sb->s_state = ext2fs_swab16(sb->s_state);
  45         sb->s_errors = ext2fs_swab16(sb->s_errors);
  46         sb->s_minor_rev_level = ext2fs_swab16(sb->s_minor_rev_level);
  47         sb->s_lastcheck = ext2fs_swab32(sb->s_lastcheck);
  48         sb->s_checkinterval = ext2fs_swab32(sb->s_checkinterval);
  49         sb->s_creator_os = ext2fs_swab32(sb->s_creator_os);
  50         sb->s_rev_level = ext2fs_swab32(sb->s_rev_level);
  51         sb->s_def_resuid = ext2fs_swab16(sb->s_def_resuid);
  52         sb->s_def_resgid = ext2fs_swab16(sb->s_def_resgid);
  53         sb->s_first_ino = ext2fs_swab32(sb->s_first_ino);
  54         sb->s_inode_size = ext2fs_swab16(sb->s_inode_size);
  55         sb->s_block_group_nr = ext2fs_swab16(sb->s_block_group_nr);
  56         sb->s_feature_compat = ext2fs_swab32(sb->s_feature_compat);
  57         sb->s_feature_incompat = ext2fs_swab32(sb->s_feature_incompat);
  58         sb->s_feature_ro_compat = ext2fs_swab32(sb->s_feature_ro_compat);
  59         sb->s_algorithm_usage_bitmap = ext2fs_swab32(sb->s_algorithm_usage_bitmap);
  60         sb->s_reserved_gdt_blocks = ext2fs_swab16(sb->s_reserved_gdt_blocks);
  61         sb->s_journal_inum = ext2fs_swab32(sb->s_journal_inum);
  62         sb->s_journal_dev = ext2fs_swab32(sb->s_journal_dev);
  63         sb->s_last_orphan = ext2fs_swab32(sb->s_last_orphan);
  64         sb->s_desc_size = ext2fs_swab16(sb->s_desc_size);
  65         sb->s_default_mount_opts = ext2fs_swab32(sb->s_default_mount_opts);
  66         sb->s_first_meta_bg = ext2fs_swab32(sb->s_first_meta_bg);
  67         sb->s_mkfs_time = ext2fs_swab32(sb->s_mkfs_time);
  68         sb->s_blocks_count_hi = ext2fs_swab32(sb->s_blocks_count_hi);
  69         sb->s_r_blocks_count_hi = ext2fs_swab32(sb->s_r_blocks_count_hi);
  70         sb->s_free_blocks_hi = ext2fs_swab32(sb->s_free_blocks_hi);
  71         sb->s_min_extra_isize = ext2fs_swab16(sb->s_min_extra_isize);
  72         sb->s_want_extra_isize = ext2fs_swab16(sb->s_want_extra_isize);
  73         sb->s_flags = ext2fs_swab32(sb->s_flags);
  74         sb->s_mmp_update_interval = ext2fs_swab16(sb->s_mmp_update_interval);
  75         sb->s_mmp_block = ext2fs_swab64(sb->s_mmp_block);
  76         sb->s_kbytes_written = ext2fs_swab64(sb->s_kbytes_written);
  77         sb->s_snapshot_inum = ext2fs_swab32(sb->s_snapshot_inum);
  78         sb->s_snapshot_id = ext2fs_swab32(sb->s_snapshot_id);
  79         sb->s_snapshot_r_blocks_count =
  80                 ext2fs_swab64(sb->s_snapshot_r_blocks_count);
  81         sb->s_snapshot_list = ext2fs_swab32(sb->s_snapshot_list);
  82         sb->s_usr_quota_inum = ext2fs_swab32(sb->s_usr_quota_inum);
  83         sb->s_grp_quota_inum = ext2fs_swab32(sb->s_grp_quota_inum);
  84         sb->s_overhead_blocks = ext2fs_swab32(sb->s_overhead_blocks);
  85         sb->s_checksum = ext2fs_swab32(sb->s_checksum);
  86
  87         for (i=0; i < 4; i++)
  88                 sb->s_hash_seed[i] = ext2fs_swab32(sb->s_hash_seed[i]);
  89
  90         /* if journal backup is for a valid extent-based journal... */
  91         if (ext2fs_extent_header_verify(sb->s_jnl_blocks,
  92                                         sizeof(sb->s_jnl_blocks)) == 0) {
  93                 /* ... swap only the journal i_size and i_size_high,
  94                  * and the extent data is not swapped on read */
  95                 i = 15;
  96         } else {
  97                 /* direct/indirect journal: swap it all */
  98                 i = 0;
  99         }
 100         for (; i < 17; i++)
 101                 sb->s_jnl_blocks[i] = ext2fs_swab32(sb->s_jnl_blocks[i]);
 102         sb->s_backup_bgs[0] = ext2fs_swab32(sb->s_backup_bgs[0]);
 103         sb->s_backup_bgs[1] = ext2fs_swab32(sb->s_backup_bgs[1]);
 104         sb->s_checksum_seed = ext2fs_swab32(sb->s_checksum_seed);
 105 }
 106
 107 void ext2fs_swap_group_desc2(ext2_filsys fs, struct ext2_group_desc *gdp)
 108 {
 109         struct ext4_group_desc *gdp4 = (struct ext4_group_desc *)gdp;
 110
 111         /* Do the 32-bit parts first */
 112         gdp->bg_block_bitmap = ext2fs_swab32(gdp->bg_block_bitmap);
 113         gdp->bg_inode_bitmap = ext2fs_swab32(gdp->bg_inode_bitmap);
 114         gdp->bg_inode_table = ext2fs_swab32(gdp->bg_inode_table);
 115         gdp->bg_free_blocks_count = ext2fs_swab16(gdp->bg_free_blocks_count);
 116         gdp->bg_free_inodes_count = ext2fs_swab16(gdp->bg_free_inodes_count);
 117         gdp->bg_used_dirs_count = ext2fs_swab16(gdp->bg_used_dirs_count);
 118         gdp->bg_flags = ext2fs_swab16(gdp->bg_flags);
 119         gdp->bg_exclude_bitmap_lo = ext2fs_swab32(gdp->bg_exclude_bitmap_lo);
 120         gdp->bg_block_bitmap_csum_lo =
 121                 ext2fs_swab16(gdp->bg_block_bitmap_csum_lo);
 122         gdp->bg_inode_bitmap_csum_lo =
 123                 ext2fs_swab16(gdp->bg_inode_bitmap_csum_lo);
 124         gdp->bg_itable_unused = ext2fs_swab16(gdp->bg_itable_unused);
 125         gdp->bg_checksum = ext2fs_swab16(gdp->bg_checksum);
 126         /* If we're 32-bit, we're done */
 127         if (fs == NULL || EXT2_DESC_SIZE(fs->super) < EXT2_MIN_DESC_SIZE_64BIT)
 128                 return;
 129
 130         /* Swap the 64-bit parts */
 131         gdp4->bg_block_bitmap_hi = ext2fs_swab32(gdp4->bg_block_bitmap_hi);
 132         gdp4->bg_inode_bitmap_hi = ext2fs_swab32(gdp4->bg_inode_bitmap_hi);
 133         gdp4->bg_inode_table_hi = ext2fs_swab32(gdp4->bg_inode_table_hi);
 134         gdp4->bg_free_blocks_count_hi =
 135                 ext2fs_swab16(gdp4->bg_free_blocks_count_hi);
 136         gdp4->bg_free_inodes_count_hi =
 137                 ext2fs_swab16(gdp4->bg_free_inodes_count_hi);
 138         gdp4->bg_used_dirs_count_hi =
 139                 ext2fs_swab16(gdp4->bg_used_dirs_count_hi);
 140         gdp4->bg_itable_unused_hi = ext2fs_swab16(gdp4->bg_itable_unused_hi);
 141         gdp4->bg_exclude_bitmap_hi = ext2fs_swab16(gdp4->bg_exclude_bitmap_hi);
 142         gdp4->bg_block_bitmap_csum_hi =
 143                 ext2fs_swab16(gdp4->bg_block_bitmap_csum_hi);
 144         gdp4->bg_inode_bitmap_csum_hi =
 145                 ext2fs_swab16(gdp4->bg_inode_bitmap_csum_hi);
 146 }
 147
 148 void ext2fs_swap_group_desc(struct ext2_group_desc *gdp)
 149 {
 150         ext2fs_swap_group_desc2(0, gdp);
 151 }
 152
 153
 154 void ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header *to_header,
 155                                  struct ext2_ext_attr_header *from_header)
 156 {
 157         int n;
 158
 159         to_header->h_magic    = ext2fs_swab32(from_header->h_magic);
 160         to_header->h_blocks   = ext2fs_swab32(from_header->h_blocks);
 161         to_header->h_refcount = ext2fs_swab32(from_header->h_refcount);
 162         to_header->h_hash     = ext2fs_swab32(from_header->h_hash);
 163         to_header->h_checksum = ext2fs_swab32(from_header->h_checksum);
 164         for (n = 0; n < 3; n++)
 165                 to_header->h_reserved[n] =
 166                         ext2fs_swab32(from_header->h_reserved[n]);
 167 }
 168
 169 void ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry *to_entry,
 170                                 struct ext2_ext_attr_entry *from_entry)
 171 {
 172         to_entry->e_value_offs  = ext2fs_swab16(from_entry->e_value_offs);
 173         to_entry->e_value_block = ext2fs_swab32(from_entry->e_value_block);
 174         to_entry->e_value_size  = ext2fs_swab32(from_entry->e_value_size);
 175         to_entry->e_hash        = ext2fs_swab32(from_entry->e_hash);
 176 }
 177
 178 void ext2fs_swap_ext_attr(char *to, char *from, int bufsize, int has_header)
 179 {
 180         struct ext2_ext_attr_header *from_header =
 181                 (struct ext2_ext_attr_header *)from;
 182         struct ext2_ext_attr_header *to_header =
 183                 (struct ext2_ext_attr_header *)to;
 184         struct ext2_ext_attr_entry *from_entry, *to_entry;
 185         char *from_end = (char *)from_header + bufsize;
 186
 187         if (to_header != from_header)
 188                 memcpy(to_header, from_header, bufsize);
 189
 190         if (has_header) {
 191                 ext2fs_swap_ext_attr_header(to_header, from_header);
 192
 193                 from_entry = (struct ext2_ext_attr_entry *)(from_header+1);
 194                 to_entry   = (struct ext2_ext_attr_entry *)(to_header+1);
 195         } else {
 196                 from_entry = (struct ext2_ext_attr_entry *)from_header;
 197                 to_entry   = (struct ext2_ext_attr_entry *)to_header;
 198         }
 199
 200         while ((char *)from_entry < from_end &&
 201                (char *)EXT2_EXT_ATTR_NEXT(from_entry) <= from_end &&
 202                *(__u32 *)from_entry) {
 203                 ext2fs_swap_ext_attr_entry(to_entry, from_entry);
 204                 from_entry = EXT2_EXT_ATTR_NEXT(from_entry);
 205                 to_entry   = EXT2_EXT_ATTR_NEXT(to_entry);
 206         }
 207 }
 208
 209 void ext2fs_swap_inode_full(ext2_filsys fs, struct ext2_inode_large *t,
 210                             struct ext2_inode_large *f, int hostorder,
 211                             int bufsize)
 212 {
 213         unsigned i, has_data_blocks, extra_isize, attr_magic;
 214         int has_extents = 0;
 215         int has_inline_data = 0;
 216         int islnk = 0;
 217         int inode_size;
 218         __u32 *eaf, *eat;
 219
 220         if (hostorder && LINUX_S_ISLNK(f->i_mode))
 221                 islnk = 1;
 222         t->i_mode = ext2fs_swab16(f->i_mode);
 223         if (!hostorder && LINUX_S_ISLNK(t->i_mode))
 224                 islnk = 1;
 225         t->i_uid = ext2fs_swab16(f->i_uid);
 226         t->i_size = ext2fs_swab32(f->i_size);
 227         t->i_atime = ext2fs_swab32(f->i_atime);
 228         t->i_ctime = ext2fs_swab32(f->i_ctime);
 229         t->i_mtime = ext2fs_swab32(f->i_mtime);
 230         t->i_dtime = ext2fs_swab32(f->i_dtime);
 231         t->i_gid = ext2fs_swab16(f->i_gid);
 232         t->i_links_count = ext2fs_swab16(f->i_links_count);
 233         t->i_file_acl = ext2fs_swab32(f->i_file_acl);
 234         if (hostorder)
 235                 has_data_blocks = ext2fs_inode_data_blocks(fs,
 236                                            (struct ext2_inode *) f);
 237         t->i_blocks = ext2fs_swab32(f->i_blocks);
 238         if (!hostorder)
 239                 has_data_blocks = ext2fs_inode_data_blocks(fs,
 240                                            (struct ext2_inode *) t);
 241         if (hostorder && (f->i_flags & EXT4_EXTENTS_FL))
 242                 has_extents = 1;
 243         if (hostorder && (f->i_flags & EXT4_INLINE_DATA_FL))
 244                 has_inline_data = 1;
 245         t->i_flags = ext2fs_swab32(f->i_flags);
 246         if (!hostorder && (t->i_flags & EXT4_EXTENTS_FL))
 247                 has_extents = 1;
 248         if (!hostorder && (t->i_flags & EXT4_INLINE_DATA_FL))
 249                 has_inline_data = 1;
 250         t->i_dir_acl = ext2fs_swab32(f->i_dir_acl);
 251         /*
 252          * Extent data and inline data are swapped on access, not here
 253          */
 254         if (!has_extents && !has_inline_data && (!islnk || has_data_blocks)) {
 255                 for (i = 0; i < EXT2_N_BLOCKS; i++)
 256                         t->i_block[i] = ext2fs_swab32(f->i_block[i]);
 257         } else if (t != f) {
 258                 for (i = 0; i < EXT2_N_BLOCKS; i++)
 259                         t->i_block[i] = f->i_block[i];
 260         }
 261         t->i_generation = ext2fs_swab32(f->i_generation);
 262         t->i_faddr = ext2fs_swab32(f->i_faddr);
 263
 264         switch (fs->super->s_creator_os) {
 265         case EXT2_OS_LINUX:
 266                 t->osd1.linux1.l_i_version =
 267                         ext2fs_swab32(f->osd1.linux1.l_i_version);
 268                 t->osd2.linux2.l_i_blocks_hi =
 269                         ext2fs_swab16(f->osd2.linux2.l_i_blocks_hi);
 270                 t->osd2.linux2.l_i_file_acl_high =
 271                         ext2fs_swab16(f->osd2.linux2.l_i_file_acl_high);
 272                 t->osd2.linux2.l_i_uid_high =
 273                   ext2fs_swab16 (f->osd2.linux2.l_i_uid_high);
 274                 t->osd2.linux2.l_i_gid_high =
 275                   ext2fs_swab16 (f->osd2.linux2.l_i_gid_high);
 276                 t->osd2.linux2.l_i_checksum_lo =
 277                         ext2fs_swab16(f->osd2.linux2.l_i_checksum_lo);
 278                 break;
 279         case EXT2_OS_HURD:
 280                 t->osd1.hurd1.h_i_translator =
 281                   ext2fs_swab32 (f->osd1.hurd1.h_i_translator);
 282                 t->osd2.hurd2.h_i_frag = f->osd2.hurd2.h_i_frag;
 283                 t->osd2.hurd2.h_i_fsize = f->osd2.hurd2.h_i_fsize;
 284                 t->osd2.hurd2.h_i_mode_high =
 285                   ext2fs_swab16 (f->osd2.hurd2.h_i_mode_high);
 286                 t->osd2.hurd2.h_i_uid_high =
 287                   ext2fs_swab16 (f->osd2.hurd2.h_i_uid_high);
 288                 t->osd2.hurd2.h_i_gid_high =
 289                   ext2fs_swab16 (f->osd2.hurd2.h_i_gid_high);
 290                 t->osd2.hurd2.h_i_author =
 291                   ext2fs_swab32 (f->osd2.hurd2.h_i_author);
 292                 break;
 293         default:
 294                 break;
 295         }
 296
 297         if (bufsize < (int) (sizeof(struct ext2_inode) + sizeof(__u16)))
 298                 return; /* no i_extra_isize field */
 299
 300         if (hostorder)
 301                 extra_isize = f->i_extra_isize;
 302         t->i_extra_isize = ext2fs_swab16(f->i_extra_isize);
 303         if (!hostorder)
 304                 extra_isize = t->i_extra_isize;
 305         if (extra_isize > EXT2_INODE_SIZE(fs->super) -
 306                                 sizeof(struct ext2_inode)) {
 307                 /* this is error case: i_extra_size is too large */
 308                 return;
 309         }
 310
 311         inode_size = EXT2_GOOD_OLD_INODE_SIZE + extra_isize;
 312         if (inode_includes(inode_size, i_checksum_hi))
 313                 t->i_checksum_hi = ext2fs_swab16(f->i_checksum_hi);
 314         if (inode_includes(inode_size, i_ctime_extra))
 315                 t->i_ctime_extra = ext2fs_swab32(f->i_ctime_extra);
 316         if (inode_includes(inode_size, i_mtime_extra))
 317                 t->i_mtime_extra = ext2fs_swab32(f->i_mtime_extra);
 318         if (inode_includes(inode_size, i_atime_extra))
 319                 t->i_atime_extra = ext2fs_swab32(f->i_atime_extra);
 320         if (inode_includes(inode_size, i_crtime))
 321                 t->i_crtime = ext2fs_swab32(f->i_crtime);
 322         if (inode_includes(inode_size, i_crtime_extra))
 323                 t->i_crtime_extra = ext2fs_swab32(f->i_crtime_extra);
 324         if (inode_includes(inode_size, i_version_hi))
 325                 t->i_version_hi = ext2fs_swab32(f->i_version_hi);
 326         if (inode_includes(inode_size, i_projid))
 327                 t->i_projid = ext2fs_swab16(f->i_projid);
 328
 329         i = sizeof(struct ext2_inode) + extra_isize + sizeof(__u32);
 330         if (bufsize < (int) i)
 331                 return; /* no space for EA magic */
 332
 333         eaf = (__u32 *) (((char *) f) + sizeof(struct ext2_inode) +
 334                                         extra_isize);
 335
 336         attr_magic = *eaf;
 337         if (!hostorder)
 338                 attr_magic = ext2fs_swab32(attr_magic);
 339
 340         if (attr_magic != EXT2_EXT_ATTR_MAGIC)
 341                 return; /* it seems no magic here */
 342
 343         eat = (__u32 *) (((char *) t) + sizeof(struct ext2_inode) +
 344                                         extra_isize);
 345         *eat = ext2fs_swab32(*eaf);
 346
 347         /* convert EA(s) */
 348         ext2fs_swap_ext_attr((char *) (eat + 1), (char *) (eaf + 1),
 349                              bufsize - sizeof(struct ext2_inode) -
 350                              extra_isize - sizeof(__u32), 0);
 351
 352 }
 353
 354 void ext2fs_swap_inode(ext2_filsys fs, struct ext2_inode *t,
 355                        struct ext2_inode *f, int hostorder)
 356 {
 357         ext2fs_swap_inode_full(fs, (struct ext2_inode_large *) t,
 358                                 (struct ext2_inode_large *) f, hostorder,
 359                                 sizeof(struct ext2_inode));
 360 }
 361
 362 void ext2fs_swap_mmp(struct mmp_struct *mmp)
 363 {
 364         mmp->mmp_magic = ext2fs_swab32(mmp->mmp_magic);
 365         mmp->mmp_seq = ext2fs_swab32(mmp->mmp_seq);
 366         mmp->mmp_time = ext2fs_swab64(mmp->mmp_time);
 367         mmp->mmp_check_interval = ext2fs_swab16(mmp->mmp_check_interval);
 368         mmp->mmp_checksum = ext2fs_swab32(mmp->mmp_checksum);
 369 }
 370
 371 errcode_t ext2fs_dirent_swab_in(ext2_filsys fs, char *buf, int flags)
 372 {
 373         return ext2fs_dirent_swab_in2(fs, buf, fs->blocksize, flags);
 374 }
 375
 376 errcode_t ext2fs_dirent_swab_in2(ext2_filsys fs, char *buf,
 377                                  size_t size, int flags)
 378 {
 379         errcode_t       retval;
 380         char            *p, *end;
 381         struct ext2_dir_entry *dirent;
 382         unsigned int    name_len, rec_len;
 383
 384         p = (char *) buf;
 385         end = (char *) buf + size;
 386         while (p < end-8) {
 387                 dirent = (struct ext2_dir_entry *) p;
 388                 dirent->inode = ext2fs_swab32(dirent->inode);
 389                 dirent->rec_len = ext2fs_swab16(dirent->rec_len);
 390                 dirent->name_len = ext2fs_swab16(dirent->name_len);
 391                 name_len = dirent->name_len;
 392                 if (flags & EXT2_DIRBLOCK_V2_STRUCT)
 393                         dirent->name_len = ext2fs_swab16(dirent->name_len);
 394                 retval = ext2fs_get_rec_len(fs, dirent, &rec_len);
 395                 if (retval)
 396                         return retval;
 397                 if ((rec_len < 8) || (rec_len % 4)) {
 398                         rec_len = 8;
 399                         retval = EXT2_ET_DIR_CORRUPTED;
 400                 } else if (((name_len & 0xFF) + 8) > rec_len)
 401                         retval = EXT2_ET_DIR_CORRUPTED;
 402                 p += rec_len;
 403         }
 404
 405         return 0;
 406 }
 407
 408 errcode_t ext2fs_dirent_swab_out(ext2_filsys fs, char *buf, int flags)
 409 {
 410         return ext2fs_dirent_swab_out2(fs, buf, fs->blocksize, flags);
 411 }
 412
 413 errcode_t ext2fs_dirent_swab_out2(ext2_filsys fs, char *buf,
 414                                   size_t size, int flags)
 415 {
 416         errcode_t       retval;
 417         char            *p, *end;
 418         unsigned int    rec_len;
 419         struct ext2_dir_entry *dirent;
 420
 421         p = buf;
 422         end = buf + size;
 423         while (p < end) {
 424                 dirent = (struct ext2_dir_entry *) p;
 425                 retval = ext2fs_get_rec_len(fs, dirent, &rec_len);
 426                 if (retval)
 427                         return retval;
 428                 if ((rec_len < 8) ||
 429                     (rec_len % 4)) {
 430                         ext2fs_free_mem(&buf);
 431                         return EXT2_ET_DIR_CORRUPTED;
 432                 }
 433                 p += rec_len;
 434                 dirent->inode = ext2fs_swab32(dirent->inode);
 435                 dirent->rec_len = ext2fs_swab16(dirent->rec_len);
 436                 dirent->name_len = ext2fs_swab16(dirent->name_len);
 437
 438                 if (flags & EXT2_DIRBLOCK_V2_STRUCT)
 439                         dirent->name_len = ext2fs_swab16(dirent->name_len);
 440         }
 441
 442         return 0;
 443 }
 444
 445 #endif