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[wimlib] / src / ntfs-apply.c
1 /*
2  * ntfs-apply.c
3  *
4  * Apply a WIM image to a NTFS volume.  We restore everything we can, including
5  * security data and alternate data streams.
6  */
7
8 /*
9  * Copyright (C) 2012 Eric Biggers
10  *
11  * This file is part of wimlib, a library for working with WIM files.
12  *
13  * wimlib is free software; you can redistribute it and/or modify it under the
14  * terms of the GNU General Public License as published by the Free
15  * Software Foundation; either version 3 of the License, or (at your option)
16  * any later version.
17  *
18  * wimlib is distributed in the hope that it will be useful, but WITHOUT ANY
19  * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
20  * A PARTICULAR PURPOSE. See the GNU General Public License for more
21  * details.
22  *
23  * You should have received a copy of the GNU General Public License
24  * along with wimlib; if not, see http://www.gnu.org/licenses/.
25  */
26
27
28 #include "config.h"
29
30 #ifdef WITH_NTFS_3G
31 #include <ntfs-3g/endians.h>
32 #include <ntfs-3g/types.h>
33 #endif
34
35 #include "wimlib_internal.h"
36
37
38 #ifdef WITH_NTFS_3G
39 #include "dentry.h"
40 #include "lookup_table.h"
41 #include "io.h"
42 #include <ntfs-3g/layout.h>
43 #include <ntfs-3g/acls.h>
44 #include <ntfs-3g/attrib.h>
45 #include <ntfs-3g/security.h> /* security.h before xattrs.h */
46 #include <ntfs-3g/xattrs.h>
47 #include <ntfs-3g/reparse.h>
48 #include <stdlib.h>
49 #include <unistd.h>
50
51 struct ntfs_apply_args {
52         ntfs_volume *vol;
53         int extract_flags;
54         WIMStruct *w;
55 };
56
57
58 #if 0
59 extern int ntfs_set_inode_security(ntfs_inode *ni, u32 selection,
60                                    const char *attr);
61 extern int ntfs_set_inode_attributes(ntfs_inode *ni, u32 attrib);
62 #endif
63
64 /* 
65  * Extracts a WIM resource to a NTFS attribute.
66  */
67 static int
68 extract_wim_resource_to_ntfs_attr(const struct lookup_table_entry *lte,
69                                   ntfs_attr *na)
70 {
71         u64 bytes_remaining = wim_resource_size(lte);
72         u8 buf[min(WIM_CHUNK_SIZE, bytes_remaining)];
73         u64 offset = 0;
74         int ret = 0;
75         u8 hash[SHA1_HASH_SIZE];
76
77         SHA_CTX ctx;
78         sha1_init(&ctx);
79
80         while (bytes_remaining) {
81                 u64 to_read = min(bytes_remaining, WIM_CHUNK_SIZE);
82                 ret = read_wim_resource(lte, buf, to_read, offset, false);
83                 if (ret != 0)
84                         break;
85                 sha1_update(&ctx, buf, to_read);
86                 if (ntfs_attr_pwrite(na, offset, to_read, buf) != to_read) {
87                         ERROR_WITH_ERRNO("Error extracting WIM resource");
88                         return WIMLIB_ERR_WRITE;
89                 }
90                 bytes_remaining -= to_read;
91                 offset += to_read;
92         }
93         sha1_final(hash, &ctx);
94         if (!hashes_equal(hash, lte->hash)) {
95                 ERROR("Invalid checksum on a WIM resource "
96                       "(detected when extracting to NTFS stream)");
97                 ERROR("The following WIM resource is invalid:");
98                 print_lookup_table_entry(lte);
99                 return WIMLIB_ERR_INVALID_RESOURCE_HASH;
100         }
101         return 0;
102 }
103
104 /* Writes the data streams to a NTFS file
105  *
106  * @ni:      The NTFS inode for the file.
107  * @inode:   The WIM dentry that has an inode containing the streams.
108  * @w:       The WIMStruct for the WIM containing the image we are applying.
109  *
110  * Returns 0 on success, nonzero on failure.
111  */
112 static int write_ntfs_data_streams(ntfs_inode *ni, const struct dentry *dentry,
113                                    WIMStruct *w)
114 {
115         int ret = 0;
116         unsigned stream_idx = 0;
117         ntfschar *stream_name = AT_UNNAMED;
118         u32 stream_name_len = 0;
119         const struct inode *inode = dentry->inode;
120
121         DEBUG("Writing %u NTFS data stream%s for `%s'",
122               inode->num_ads + 1,
123               (inode->num_ads == 0 ? "" : "s"),
124               dentry->full_path_utf8);
125
126         while (1) {
127                 struct lookup_table_entry *lte;
128                 ntfs_attr *na;
129
130                 lte = inode_stream_lte(inode, stream_idx, w->lookup_table);
131
132                 if (stream_name_len) {
133                         /* Create an empty named stream. */
134                         ret = ntfs_attr_add(ni, AT_DATA, stream_name,
135                                             stream_name_len, NULL, 0);
136                         if (ret != 0) {
137                                 ERROR_WITH_ERRNO("Failed to create name data "
138                                                  "stream for extracted file "
139                                                  "`%s'",
140                                                  dentry->full_path_utf8);
141                                 ret = WIMLIB_ERR_NTFS_3G;
142                                 break;
143
144                         }
145                 }
146                 /* If there's no lookup table entry, it's an empty stream.
147                  * Otherwise, we must open the attribute and extract the data.
148                  * */
149                 if (lte) {
150                         na = ntfs_attr_open(ni, AT_DATA, stream_name, stream_name_len);
151                         if (!na) {
152                                 ERROR_WITH_ERRNO("Failed to open a data stream of "
153                                                  "extracted file `%s'",
154                                                  dentry->full_path_utf8);
155                                 ret = WIMLIB_ERR_NTFS_3G;
156                                 break;
157                         }
158                         ret = extract_wim_resource_to_ntfs_attr(lte, na);
159                         if (ret != 0)
160                                 break;
161                         ntfs_attr_close(na);
162                 }
163                 if (stream_idx == inode->num_ads)
164                         break;
165                 stream_name = (ntfschar*)inode->ads_entries[stream_idx].stream_name;
166                 stream_name_len = inode->ads_entries[stream_idx].stream_name_len / 2;
167                 stream_idx++;
168         }
169         return ret;
170 }
171
172 /*
173  * Makes a NTFS hard link
174  *
175  * It is named @from_dentry->file_name and is located under the directory
176  * specified by @dir_ni, and it is made to point to the previously extracted
177  * file located at @inode->extracted_file.
178  *
179  * Return 0 on success, nonzero on failure.
180  */
181 static int wim_apply_hardlink_ntfs(const struct dentry *from_dentry,
182                                    const struct inode *inode,
183                                    ntfs_inode *dir_ni,
184                                    ntfs_inode **to_ni_ret)
185 {
186         int ret;
187         char *p;
188         char orig;
189         const char *dir_name;
190
191         ntfs_inode *to_ni;
192         ntfs_volume *vol;
193
194         wimlib_assert(dentry_is_regular_file(from_dentry)
195                         && inode_is_regular_file(inode));
196
197         if (ntfs_inode_close(dir_ni) != 0) {
198                 ERROR_WITH_ERRNO("Error closing directory");
199                 return WIMLIB_ERR_NTFS_3G;
200         }
201
202         vol = dir_ni->vol;
203
204         DEBUG("Extracting NTFS hard link `%s' => `%s'",
205               from_dentry->full_path_utf8, inode->extracted_file);
206
207         to_ni = ntfs_pathname_to_inode(vol, NULL, inode->extracted_file);
208         if (!to_ni) {
209                 ERROR_WITH_ERRNO("Could not find NTFS inode for `%s'",
210                                  inode->extracted_file);
211                 return WIMLIB_ERR_NTFS_3G;
212         }
213         p = from_dentry->full_path_utf8 + from_dentry->full_path_utf8_len;
214         do {
215                 p--;
216         } while (*p != '/');
217
218         orig = *p;
219         *p = '\0';
220         dir_name = from_dentry->full_path_utf8;
221
222         dir_ni = ntfs_pathname_to_inode(vol, NULL, dir_name);
223         if (!dir_ni) {
224                 ERROR_WITH_ERRNO("Could not find NTFS inode for `%s'",
225                                  from_dentry->full_path_utf8);
226                 *p = orig;
227                 return WIMLIB_ERR_NTFS_3G;
228         }
229         *p = orig;
230
231         ret = ntfs_link(to_ni, dir_ni,
232                         (ntfschar*)from_dentry->file_name,
233                         from_dentry->file_name_len / 2);
234         if (ret != 0) {
235                 ERROR_WITH_ERRNO("Could not create hard link `%s' => `%s'",
236                                  from_dentry->full_path_utf8,
237                                  inode->extracted_file);
238                 ret = WIMLIB_ERR_NTFS_3G;
239         }
240         *to_ni_ret = to_ni;
241         return ret;
242 }
243
244 static int
245 apply_file_attributes_and_security_data(ntfs_inode *ni,
246                                         ntfs_inode *dir_ni,
247                                         const struct dentry *dentry,
248                                         const WIMStruct *w)
249 {
250         DEBUG("Setting NTFS file attributes on `%s' to %#"PRIx32,
251               dentry->full_path_utf8, dentry->inode->attributes);
252         int ret;
253         struct SECURITY_CONTEXT ctx;
254         u32 attributes_le32;
255         attributes_le32 = cpu_to_le32(dentry->inode->attributes);
256         memset(&ctx, 0, sizeof(ctx));
257         ctx.vol = ni->vol;
258         ret = ntfs_xattr_system_setxattr(&ctx, XATTR_NTFS_ATTRIB,
259                                          ni, dir_ni,
260                                          (const char*)&attributes_le32,
261                                          sizeof(u32), 0);
262         if (ret != 0) {
263                 ERROR("Failed to set NTFS file attributes on `%s'",
264                        dentry->full_path_utf8);
265                 return WIMLIB_ERR_NTFS_3G;
266         }
267         if (dentry->inode->security_id != -1) {
268                 const struct wim_security_data *sd;
269                 const char *descriptor;
270                 
271                 sd = wim_const_security_data(w);
272                 wimlib_assert(dentry->inode->security_id < sd->num_entries);
273                 descriptor = sd->descriptors[dentry->inode->security_id];
274                 DEBUG("Applying security descriptor %d to `%s'",
275                       dentry->inode->security_id, dentry->full_path_utf8);
276
277                 ret = ntfs_xattr_system_setxattr(&ctx, XATTR_NTFS_ACL,
278                                                  ni, dir_ni, descriptor,
279                                                  sd->sizes[dentry->inode->security_id], 0);
280                                 
281                 if (ret != 0) {
282                         ERROR_WITH_ERRNO("Failed to set security data on `%s'",
283                                         dentry->full_path_utf8);
284                         return WIMLIB_ERR_NTFS_3G;
285                 }
286         }
287         return 0;
288 }
289
290 static int apply_reparse_data(ntfs_inode *ni, const struct dentry *dentry,
291                               const WIMStruct *w)
292 {
293         struct lookup_table_entry *lte;
294         int ret = 0;
295
296         wimlib_assert(dentry->inode->attributes & FILE_ATTRIBUTE_REPARSE_POINT);
297
298         lte = inode_unnamed_lte(dentry->inode, w->lookup_table);
299
300         DEBUG("Applying reparse data to `%s'", dentry->full_path_utf8);
301
302         if (!lte) {
303                 ERROR("Could not find reparse data for `%s'",
304                       dentry->full_path_utf8);
305                 return WIMLIB_ERR_INVALID_DENTRY;
306         }
307
308         if (wim_resource_size(lte) >= 0xffff) {
309                 ERROR("Reparse data of `%s' is too long (%lu bytes)",
310                       dentry->full_path_utf8, wim_resource_size(lte));
311                 return WIMLIB_ERR_INVALID_DENTRY;
312         }
313
314         u8 reparse_data_buf[8 + wim_resource_size(lte)];
315         u8 *p = reparse_data_buf;
316         p = put_u32(p, dentry->inode->reparse_tag); /* ReparseTag */
317         p = put_u16(p, wim_resource_size(lte)); /* ReparseDataLength */
318         p = put_u16(p, 0); /* Reserved */
319
320         ret = read_full_wim_resource(lte, p);
321         if (ret != 0)
322                 return ret;
323
324         ret = ntfs_set_ntfs_reparse_data(ni, (char*)reparse_data_buf,
325                                          wim_resource_size(lte) + 8, 0);
326         if (ret != 0) {
327                 ERROR_WITH_ERRNO("Failed to set NTFS reparse data on `%s'",
328                                  dentry->full_path_utf8);
329                 return WIMLIB_ERR_NTFS_3G;
330         }
331         return 0;
332 }
333
334 static int do_wim_apply_dentry_ntfs(struct dentry *dentry, ntfs_inode *dir_ni,
335                                     WIMStruct *w);
336
337 /* 
338  * If @dentry is part of a hard link group, search for hard-linked dentries in
339  * the same directory that have a nonempty DOS (short) filename.  There should
340  * be exactly 0 or 1 such dentries.  If there is 1, extract that dentry first,
341  * so that the DOS name is correctly associated with the corresponding long name
342  * in the Win32 namespace, and not any of the additional names in the POSIX
343  * namespace created from hard links.
344  */
345 static int preapply_dentry_with_dos_name(struct dentry *dentry,
346                                          ntfs_inode **dir_ni_p,
347                                          WIMStruct *w)
348 {
349         struct dentry *other;
350         struct dentry *dentry_with_dos_name;
351
352         dentry_with_dos_name = NULL;
353         inode_for_each_dentry(other, dentry->inode) {
354                 if (other != dentry && (dentry->parent == other->parent)
355                     && other->short_name_len)
356                 {
357                         if (dentry_with_dos_name) {
358                                 ERROR("Found multiple DOS names for file `%s' "
359                                       "in the same directory",
360                                       dentry_with_dos_name->full_path_utf8);
361                                 return WIMLIB_ERR_INVALID_DENTRY;
362                         }
363                         dentry_with_dos_name = other;
364                 }
365         }
366         /* If there's a dentry with a DOS name, extract it first */
367         if (dentry_with_dos_name && !dentry_is_extracted(dentry)) {
368                 char *p;
369                 const char *dir_name;
370                 char orig;
371                 int ret;
372                 ntfs_volume *vol = (*dir_ni_p)->vol;
373
374                 DEBUG("pre-applying DOS name `%s'",
375                       dentry_with_dos_name->full_path_utf8);
376                 ret = do_wim_apply_dentry_ntfs(dentry_with_dos_name,
377                                                *dir_ni_p, w);
378                 if (ret != 0)
379                         return ret;
380                 p = dentry->full_path_utf8 + dentry->full_path_utf8_len;
381                 do {
382                         p--;
383                 } while (*p != '/');
384
385                 orig = *p;
386                 *p = '\0';
387                 dir_name = dentry->full_path_utf8;
388
389                 *dir_ni_p = ntfs_pathname_to_inode(vol, NULL, dir_name);
390                 *p = orig;
391                 if (!*dir_ni_p) {
392                         ERROR_WITH_ERRNO("Could not find NTFS inode for `%s'",
393                                          dir_name);
394                         return WIMLIB_ERR_NTFS_3G;
395                 }
396         }
397         return 0;
398 }
399
400 /* 
401  * Applies a WIM dentry to a NTFS filesystem.
402  *
403  * @dentry:  The WIM dentry to apply
404  * @dir_ni:  The NTFS inode for the parent directory
405  * @w:       The WIMStruct for the WIM containing the image we are applying.
406  *
407  * @return:  0 on success; nonzero on failure.
408  */
409 static int do_wim_apply_dentry_ntfs(struct dentry *dentry, ntfs_inode *dir_ni,
410                                     WIMStruct *w)
411 {
412         int ret = 0;
413         mode_t type;
414         ntfs_inode *ni = NULL;
415         bool is_hardlink = false;
416         ntfs_volume *vol = dir_ni->vol;
417         struct inode *inode = dentry->inode;
418         dentry->is_extracted = true;
419
420         if (inode->attributes & FILE_ATTRIBUTE_DIRECTORY) {
421                 type = S_IFDIR;
422         } else {
423                 struct dentry *other;
424
425                 /* Apply hard-linked directory in same directory with DOS name
426                  * (if there is one) before this dentry */
427                 if (dentry->short_name_len == 0) {
428                         ret = preapply_dentry_with_dos_name(dentry,
429                                                             &dir_ni, w);
430                         if (ret != 0)
431                                 return ret;
432                 }
433
434                 type = S_IFREG;
435
436                 if (inode->link_count > 1) {
437                         /* Already extracted another dentry in the hard link
438                          * group.  We can make a hard link instead of extracting
439                          * the file data. */
440                         if (inode->extracted_file) {
441                                 ret = wim_apply_hardlink_ntfs(dentry, inode,
442                                                               dir_ni, &ni);
443                                 is_hardlink = true;
444                                 if (ret)
445                                         goto out_close_dir_ni;
446                                 else
447                                         goto out_set_dos_name;
448                         }
449                         /* Can't make a hard link; extract the file itself */
450                         FREE(inode->extracted_file);
451                         inode->extracted_file = STRDUP(dentry->full_path_utf8);
452                         if (!inode->extracted_file)
453                                 return WIMLIB_ERR_NOMEM;
454                 }
455         }
456
457         /* 
458          * Create a directory or file.
459          *
460          * Note: For symbolic links that are not directory junctions, pass
461          * S_IFREG here, since we manually set the reparse data later.
462          */
463         ni = ntfs_create(dir_ni, 0, (ntfschar*)dentry->file_name,
464                          dentry->file_name_len / 2, type);
465
466         if (!ni) {
467                 ERROR_WITH_ERRNO("Could not create NTFS object for `%s'",
468                                  dentry->full_path_utf8);
469                 ret = WIMLIB_ERR_NTFS_3G;
470                 goto out_close_dir_ni;
471         }
472
473         /* Write the data streams, unless this is a directory or reparse point
474          * */
475         if (!(inode->attributes & (FILE_ATTRIBUTE_REPARSE_POINT |
476                                    FILE_ATTRIBUTE_DIRECTORY))) {
477                 ret = write_ntfs_data_streams(ni, dentry, w);
478                 if (ret != 0)
479                         goto out_close_dir_ni;
480         }
481
482
483         ret = apply_file_attributes_and_security_data(ni, dir_ni, dentry, w);
484         if (ret != 0)
485                 goto out_close_dir_ni;
486
487         if (inode->attributes & FILE_ATTR_REPARSE_POINT) {
488                 ret = apply_reparse_data(ni, dentry, w);
489                 if (ret != 0)
490                         goto out_close_dir_ni;
491         }
492
493 out_set_dos_name:
494         /* Set DOS (short) name if given */
495         if (dentry->short_name_len != 0) {
496
497                 char *short_name_utf8;
498                 size_t short_name_utf8_len;
499                 short_name_utf8 = utf16_to_utf8(dentry->short_name,
500                                                 dentry->short_name_len,
501                                                 &short_name_utf8_len);
502                 if (!short_name_utf8) {
503                         ERROR("Out of memory");
504                         ret = WIMLIB_ERR_NOMEM;
505                         goto out_close_dir_ni;
506                 }
507
508                 if (is_hardlink) {
509                         char *p;
510                         char orig;
511                         const char *dir_name;
512
513                         /* ntfs_set_ntfs_dos_name() closes the inodes in the
514                          * wrong order if we have applied a hard link.   Close
515                          * them ourselves, then re-open then. */
516                         if (ntfs_inode_close(dir_ni) != 0) {
517                                 if (ret == 0)
518                                         ret = WIMLIB_ERR_NTFS_3G;
519                                 ERROR_WITH_ERRNO("Failed to close directory inode");
520                         }
521                         if (ntfs_inode_close(ni) != 0) {
522                                 if (ret == 0)
523                                         ret = WIMLIB_ERR_NTFS_3G;
524                                 ERROR_WITH_ERRNO("Failed to close hard link target inode");
525                         }
526                         p = dentry->full_path_utf8 + dentry->full_path_utf8_len;
527                         do {
528                                 p--;
529                         } while (*p != '/');
530
531                         orig = *p;
532                         *p = '\0';
533                         dir_name = dentry->full_path_utf8;
534
535                         dir_ni = ntfs_pathname_to_inode(vol, NULL, dir_name);
536                         *p = orig;
537                         if (!dir_ni) {
538                                 ERROR_WITH_ERRNO("Could not find NTFS inode for `%s'",
539                                                  dir_name);
540                                 return WIMLIB_ERR_NTFS_3G;
541                         }
542                         ni = ntfs_pathname_to_inode(vol, dir_ni,
543                                                     dentry->file_name_utf8);
544                         if (!ni) {
545                                 ERROR_WITH_ERRNO("Could not find NTFS inode for `%s'",
546                                                  dir_name);
547                                 return WIMLIB_ERR_NTFS_3G;
548                         }
549                 }
550
551                 DEBUG("Setting short (DOS) name of `%s' to %s",
552                       dentry->full_path_utf8, short_name_utf8);
553
554                 ret = ntfs_set_ntfs_dos_name(ni, dir_ni, short_name_utf8,
555                                              short_name_utf8_len, 0);
556                 FREE(short_name_utf8);
557                 if (ret != 0) {
558                         ERROR_WITH_ERRNO("Could not set DOS (short) name for `%s'",
559                                          dentry->full_path_utf8);
560                         ret = WIMLIB_ERR_NTFS_3G;
561                 }
562                 /* inodes have been closed by ntfs_set_ntfs_dos_name(). */
563                 return ret;
564         }
565
566 out_close_dir_ni:
567         if (ntfs_inode_close(dir_ni) != 0) {
568                 if (ret == 0)
569                         ret = WIMLIB_ERR_NTFS_3G;
570                 ERROR_WITH_ERRNO("Failed to close directory inode");
571         }
572         if (ni && ntfs_inode_close(ni) != 0) {
573                 if (ret == 0)
574                         ret = WIMLIB_ERR_NTFS_3G;
575                 ERROR_WITH_ERRNO("Failed to close inode");
576         }
577         return ret;
578 }
579
580 static int wim_apply_root_dentry_ntfs(const struct dentry *dentry,
581                                       ntfs_volume *vol,
582                                       const WIMStruct *w)
583 {
584         ntfs_inode *ni;
585         int ret = 0;
586
587         wimlib_assert(dentry_is_directory(dentry));
588         ni = ntfs_pathname_to_inode(vol, NULL, "/");
589         if (!ni) {
590                 ERROR_WITH_ERRNO("Could not find root NTFS inode");
591                 return WIMLIB_ERR_NTFS_3G;
592         }
593         ret = apply_file_attributes_and_security_data(ni, ni, dentry, w);
594         if (ntfs_inode_close(ni) != 0) {
595                 ERROR_WITH_ERRNO("Failed to close NTFS inode for root "
596                                  "directory");
597                 ret = WIMLIB_ERR_NTFS_3G;
598         }
599         return ret;
600 }
601
602 /* Applies a WIM dentry to the NTFS volume */
603 static int wim_apply_dentry_ntfs(struct dentry *dentry, void *arg)
604 {
605         struct ntfs_apply_args *args = arg;
606         ntfs_volume *vol             = args->vol;
607         int extract_flags            = args->extract_flags;
608         WIMStruct *w                 = args->w;
609         ntfs_inode *dir_ni;
610         char *p;
611         char orig;
612         const char *dir_name;
613
614         if (dentry_is_extracted(dentry))
615                 return 0;
616
617         wimlib_assert(dentry->full_path_utf8);
618
619         DEBUG("Applying dentry `%s' to NTFS", dentry->full_path_utf8);
620
621         if (extract_flags & WIMLIB_EXTRACT_FLAG_VERBOSE)
622                 puts(dentry->full_path_utf8);
623
624         if (dentry_is_root(dentry))
625                 return wim_apply_root_dentry_ntfs(dentry, vol, w);
626
627         p = dentry->full_path_utf8 + dentry->full_path_utf8_len;
628         do {
629                 p--;
630         } while (*p != '/');
631
632         orig = *p;
633         *p = '\0';
634         dir_name = dentry->full_path_utf8;
635
636         dir_ni = ntfs_pathname_to_inode(vol, NULL, dir_name);
637         *p = orig;
638         if (!dir_ni) {
639                 ERROR_WITH_ERRNO("Could not find NTFS inode for `%s'",
640                                  dir_name);
641                 return WIMLIB_ERR_NTFS_3G;
642         }
643         return do_wim_apply_dentry_ntfs(dentry, dir_ni, w);
644 }
645
646 static int wim_apply_dentry_timestamps(struct dentry *dentry, void *arg)
647 {
648         struct ntfs_apply_args *args = arg;
649         ntfs_volume *vol             = args->vol;
650         u8 *p;
651         u8 buf[24];
652         ntfs_inode *ni;
653         int ret = 0;
654
655
656         DEBUG("Setting timestamps on `%s'", dentry->full_path_utf8);
657
658         ni = ntfs_pathname_to_inode(vol, NULL, dentry->full_path_utf8);
659         if (!ni) {
660                 ERROR_WITH_ERRNO("Could not find NTFS inode for `%s'",
661                                  dentry->full_path_utf8);
662                 return WIMLIB_ERR_NTFS_3G;
663         }
664
665         p = buf;
666         p = put_u64(p, dentry->inode->creation_time);
667         p = put_u64(p, dentry->inode->last_write_time);
668         p = put_u64(p, dentry->inode->last_access_time);
669         ret = ntfs_inode_set_times(ni, (const char*)buf, 3 * sizeof(u64), 0);
670         if (ret != 0) {
671                 ERROR_WITH_ERRNO("Failed to set NTFS timestamps on `%s'",
672                                  dentry->full_path_utf8);
673                 ret = WIMLIB_ERR_NTFS_3G;
674         }
675
676         if (ntfs_inode_close(ni) != 0) {
677                 if (ret == 0)
678                         ret = WIMLIB_ERR_NTFS_3G;
679                 ERROR_WITH_ERRNO("Failed to close NTFS inode for `%s'",
680                                  dentry->full_path_utf8);
681         }
682         return ret;
683 }
684
685 static int dentry_set_unextracted(struct dentry *dentry, void *ignore)
686 {
687         dentry->is_extracted = false;
688         return 0;
689 }
690
691 static int do_wim_apply_image_ntfs(WIMStruct *w, const char *device, int extract_flags)
692 {
693         ntfs_volume *vol;
694         int ret;
695         struct dentry *root;
696         struct ntfs_apply_args args;
697         
698         DEBUG("Mounting NTFS volume `%s'", device);
699         vol = ntfs_mount(device, 0);
700         if (!vol) {
701                 ERROR_WITH_ERRNO("Failed to mount NTFS volume `%s'", device);
702                 return WIMLIB_ERR_NTFS_3G;
703         }
704         args.vol = vol;
705         args.extract_flags = extract_flags;
706         args.w = w;
707         root = wim_root_dentry(w);
708
709         for_dentry_in_tree(root, dentry_set_unextracted, NULL);
710         ret = for_dentry_in_tree(root, wim_apply_dentry_ntfs, &args);
711         if (ret != 0)
712                 goto out;
713
714         if (extract_flags & WIMLIB_EXTRACT_FLAG_VERBOSE)
715                 printf("Setting timestamps of extracted files on NTFS "
716                        "volume `%s'\n", device);
717         ret = for_dentry_in_tree_depth(root, wim_apply_dentry_timestamps,
718                                        &args);
719
720         if (ret == 0 && (extract_flags & WIMLIB_EXTRACT_FLAG_VERBOSE))
721                 printf("Finished applying image %d of %s to NTFS "
722                        "volume `%s'\n",
723                        w->current_image,
724                        w->filename ? w->filename : "WIM",
725                        device);
726 out:
727         DEBUG("Unmounting NTFS volume `%s'", device);
728         if (ntfs_umount(vol, FALSE) != 0) {
729                 ERROR_WITH_ERRNO("Failed to unmount NTFS volume `%s'", device);
730                 if (ret == 0)
731                         ret = WIMLIB_ERR_NTFS_3G;
732         }
733         return ret;
734 }
735
736
737 /* 
738  * API entry point for applying a WIM image to a NTFS volume.
739  *
740  * Please note that this is a NTFS *volume* and not a directory.  The intention
741  * is that the volume contain an empty filesystem, and the WIM image contain a
742  * full filesystem to be applied to the volume.
743  */
744 WIMLIBAPI int wimlib_apply_image_to_ntfs_volume(WIMStruct *w, int image,
745                                                 const char *device, int flags,
746                                                 WIMStruct **additional_swms,
747                                                 unsigned num_additional_swms)
748 {
749         struct lookup_table *joined_tab, *w_tab_save;
750         int ret;
751
752         DEBUG("w->filename = %s, image = %d, device = %s, flags = 0x%x, "
753               "num_additional_swms = %u",
754               w->filename, image, device, flags, num_additional_swms);
755
756         if (!w || !device)
757                 return WIMLIB_ERR_INVALID_PARAM;
758         if (image == WIM_ALL_IMAGES) {
759                 ERROR("Can only apply a single image when applying "
760                       "directly to a NTFS volume");
761                 return WIMLIB_ERR_INVALID_PARAM;
762         }
763         if (flags & (WIMLIB_EXTRACT_FLAG_SYMLINK | WIMLIB_EXTRACT_FLAG_HARDLINK)) {
764                 ERROR("Cannot specify symlink or hardlink flags when applying ");
765                 ERROR("directly to a NTFS volume");
766                 return WIMLIB_ERR_INVALID_PARAM;
767         }
768
769         ret = verify_swm_set(w, additional_swms, num_additional_swms);
770         if (ret != 0)
771                 return ret;
772
773         if (num_additional_swms) {
774                 ret = new_joined_lookup_table(w, additional_swms,
775                                               num_additional_swms, &joined_tab);
776                 if (ret != 0)
777                         return ret;
778                 w_tab_save = w->lookup_table;
779                 w->lookup_table = joined_tab;
780         }
781
782         ret = wimlib_select_image(w, image);
783         if (ret != 0)
784                 goto out;
785
786         ret = do_wim_apply_image_ntfs(w, device, flags);
787
788 out:
789         if (num_additional_swms) {
790                 free_lookup_table(w->lookup_table);
791                 w->lookup_table = w_tab_save;
792         }
793         return ret;
794 }
795
796 #else /* WITH_NTFS_3G */
797 WIMLIBAPI int wimlib_apply_image_to_ntfs_volume(WIMStruct *w, int image,
798                                                 const char *device, int flags,
799                                                 WIMStruct **additional_swms,
800                                                 unsigned num_additional_swms)
801 {
802         ERROR("wimlib was compiled without support for NTFS-3g, so");
803         ERROR("we cannot apply a WIM image directly to a NTFS volume");
804         return WIMLIB_ERR_UNSUPPORTED;
805 }
806 #endif /* WITH_NTFS_3G */