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
ext2fs_swap_super(struct ext2_super_block * sb)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
ext2fs_swap_group_desc2(ext2_filsys fs,struct ext2_group_desc * gdp)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
ext2fs_swap_group_desc(struct ext2_group_desc * gdp)148 void ext2fs_swap_group_desc(struct ext2_group_desc *gdp)
149 {
150 ext2fs_swap_group_desc2(0, gdp);
151 }
152
153
ext2fs_swap_ext_attr_header(struct ext2_ext_attr_header * to_header,struct ext2_ext_attr_header * from_header)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
ext2fs_swap_ext_attr_entry(struct ext2_ext_attr_entry * to_entry,struct ext2_ext_attr_entry * from_entry)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
ext2fs_swap_ext_attr(char * to,char * from,int bufsize,int has_header)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
ext2fs_swap_inode_full(ext2_filsys fs,struct ext2_inode_large * t,struct ext2_inode_large * f,int hostorder,int bufsize)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 if (extra_isize & 3)
311 return; /* Illegal inode extra_isize */
312
313 inode_size = EXT2_GOOD_OLD_INODE_SIZE + extra_isize;
314 if (inode_includes(inode_size, i_checksum_hi))
315 t->i_checksum_hi = ext2fs_swab16(f->i_checksum_hi);
316 if (inode_includes(inode_size, i_ctime_extra))
317 t->i_ctime_extra = ext2fs_swab32(f->i_ctime_extra);
318 if (inode_includes(inode_size, i_mtime_extra))
319 t->i_mtime_extra = ext2fs_swab32(f->i_mtime_extra);
320 if (inode_includes(inode_size, i_atime_extra))
321 t->i_atime_extra = ext2fs_swab32(f->i_atime_extra);
322 if (inode_includes(inode_size, i_crtime))
323 t->i_crtime = ext2fs_swab32(f->i_crtime);
324 if (inode_includes(inode_size, i_crtime_extra))
325 t->i_crtime_extra = ext2fs_swab32(f->i_crtime_extra);
326 if (inode_includes(inode_size, i_version_hi))
327 t->i_version_hi = ext2fs_swab32(f->i_version_hi);
328 if (inode_includes(inode_size, i_projid))
329 t->i_projid = ext2fs_swab16(f->i_projid);
330
331 i = sizeof(struct ext2_inode) + extra_isize + sizeof(__u32);
332 if (bufsize < (int) i)
333 return; /* no space for EA magic */
334
335 eaf = (__u32 *) (((char *) f) + sizeof(struct ext2_inode) +
336 extra_isize);
337
338 attr_magic = *eaf;
339 if (!hostorder)
340 attr_magic = ext2fs_swab32(attr_magic);
341
342 if (attr_magic != EXT2_EXT_ATTR_MAGIC)
343 return; /* it seems no magic here */
344
345 eat = (__u32 *) (((char *) t) + sizeof(struct ext2_inode) +
346 extra_isize);
347 *eat = ext2fs_swab32(*eaf);
348
349 /* convert EA(s) */
350 ext2fs_swap_ext_attr((char *) (eat + 1), (char *) (eaf + 1),
351 bufsize - sizeof(struct ext2_inode) -
352 extra_isize - sizeof(__u32), 0);
353
354 }
355
ext2fs_swap_inode(ext2_filsys fs,struct ext2_inode * t,struct ext2_inode * f,int hostorder)356 void ext2fs_swap_inode(ext2_filsys fs, struct ext2_inode *t,
357 struct ext2_inode *f, int hostorder)
358 {
359 ext2fs_swap_inode_full(fs, (struct ext2_inode_large *) t,
360 (struct ext2_inode_large *) f, hostorder,
361 sizeof(struct ext2_inode));
362 }
363
ext2fs_swap_mmp(struct mmp_struct * mmp)364 void ext2fs_swap_mmp(struct mmp_struct *mmp)
365 {
366 mmp->mmp_magic = ext2fs_swab32(mmp->mmp_magic);
367 mmp->mmp_seq = ext2fs_swab32(mmp->mmp_seq);
368 mmp->mmp_time = ext2fs_swab64(mmp->mmp_time);
369 mmp->mmp_check_interval = ext2fs_swab16(mmp->mmp_check_interval);
370 mmp->mmp_checksum = ext2fs_swab32(mmp->mmp_checksum);
371 }
372
ext2fs_dirent_swab_in(ext2_filsys fs,char * buf,int flags)373 errcode_t ext2fs_dirent_swab_in(ext2_filsys fs, char *buf, int flags)
374 {
375 return ext2fs_dirent_swab_in2(fs, buf, fs->blocksize, flags);
376 }
377
ext2fs_dirent_swab_in2(ext2_filsys fs,char * buf,size_t size,int flags)378 errcode_t ext2fs_dirent_swab_in2(ext2_filsys fs, char *buf,
379 size_t size, int flags)
380 {
381 errcode_t retval;
382 char *p, *end;
383 struct ext2_dir_entry *dirent;
384 unsigned int name_len, rec_len;
385
386 p = (char *) buf;
387 end = (char *) buf + size;
388 while (p < end-8) {
389 dirent = (struct ext2_dir_entry *) p;
390 dirent->inode = ext2fs_swab32(dirent->inode);
391 dirent->rec_len = ext2fs_swab16(dirent->rec_len);
392 dirent->name_len = ext2fs_swab16(dirent->name_len);
393 name_len = dirent->name_len;
394 if (flags & EXT2_DIRBLOCK_V2_STRUCT)
395 dirent->name_len = ext2fs_swab16(dirent->name_len);
396 retval = ext2fs_get_rec_len(fs, dirent, &rec_len);
397 if (retval)
398 return retval;
399 if ((rec_len < 8) || (rec_len % 4)) {
400 rec_len = 8;
401 retval = EXT2_ET_DIR_CORRUPTED;
402 } else if (((name_len & 0xFF) + 8) > rec_len)
403 retval = EXT2_ET_DIR_CORRUPTED;
404 p += rec_len;
405 }
406
407 return 0;
408 }
409
ext2fs_dirent_swab_out(ext2_filsys fs,char * buf,int flags)410 errcode_t ext2fs_dirent_swab_out(ext2_filsys fs, char *buf, int flags)
411 {
412 return ext2fs_dirent_swab_out2(fs, buf, fs->blocksize, flags);
413 }
414
ext2fs_dirent_swab_out2(ext2_filsys fs,char * buf,size_t size,int flags)415 errcode_t ext2fs_dirent_swab_out2(ext2_filsys fs, char *buf,
416 size_t size, int flags)
417 {
418 errcode_t retval;
419 char *p, *end;
420 unsigned int rec_len;
421 struct ext2_dir_entry *dirent;
422
423 p = buf;
424 end = buf + size;
425 while (p < end) {
426 dirent = (struct ext2_dir_entry *) p;
427 retval = ext2fs_get_rec_len(fs, dirent, &rec_len);
428 if (retval)
429 return retval;
430 if ((rec_len < 8) ||
431 (rec_len % 4)) {
432 ext2fs_free_mem(&buf);
433 return EXT2_ET_DIR_CORRUPTED;
434 }
435 p += rec_len;
436 dirent->inode = ext2fs_swab32(dirent->inode);
437 dirent->rec_len = ext2fs_swab16(dirent->rec_len);
438 dirent->name_len = ext2fs_swab16(dirent->name_len);
439
440 if (flags & EXT2_DIRBLOCK_V2_STRUCT)
441 dirent->name_len = ext2fs_swab16(dirent->name_len);
442 }
443
444 return 0;
445 }
446
447 #endif
448