wimlib.net Git - wimlib/blob - src/ntfs-apply.c

   1 /*
   2  * ntfs-apply.c
   3  *
   4  * Apply a WIM image to a NTFS volume, restoring everything we can, including
   5  * security data and alternate data streams.  There should be no loss of
   6  * information.
   7  */
   8
   9 /*
  10  * Copyright (C) 2012 Eric Biggers
  11  *
  12  * This file is part of wimlib, a library for working with WIM files.
  13  *
  14  * wimlib is free software; you can redistribute it and/or modify it under the
  15  * terms of the GNU Lesser General Public License as published by the Free
  16  * Software Foundation; either version 2.1 of the License, or (at your option)
  17  * any later version.
  18  *
  19  * wimlib is distributed in the hope that it will be useful, but WITHOUT ANY
  20  * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
  21  * A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
  22  * details.
  23  *
  24  * You should have received a copy of the GNU Lesser General Public License
  25  * along with wimlib; if not, see http://www.gnu.org/licenses/.
  26  */
  27
  28 #include "config.h"
  29 #include "wimlib_internal.h"
  30
  31
  32 #ifdef WITH_NTFS_3G
  33 #include "dentry.h"
  34 #include "lookup_table.h"
  35 #include "io.h"
  36 #include <ntfs-3g/layout.h>
  37 #include <ntfs-3g/acls.h>
  38 #include <ntfs-3g/attrib.h>
  39 #include <ntfs-3g/misc.h>
  40 #include <ntfs-3g/reparse.h>
  41 #include <ntfs-3g/security.h>
  42 #include <ntfs-3g/volume.h>
  43 #include <stdlib.h>
  44 #include <unistd.h>
  45
  46 struct ntfs_apply_args {
  47         ntfs_volume *vol;
  48         int extract_flags;
  49         WIMStruct *w;
  50 };
  51
  52 extern int _ntfs_set_file_security(ntfs_inode *ni, u32 selection,
  53                                    const char *attr);
  54 extern int _ntfs_set_file_attributes(ntfs_inode *ni, s32 attrib);
  55
  56 /*
  57  * Extracts a WIM resource to a NTFS attribute.
  58  */
  59 static int
  60 extract_wim_resource_to_ntfs_attr(const struct lookup_table_entry *lte,
  61                                   ntfs_attr *na)
  62 {
  63         u64 bytes_remaining = wim_resource_size(lte);
  64         char buf[min(WIM_CHUNK_SIZE, bytes_remaining)];
  65         u64 offset = 0;
  66         int ret = 0;
  67         u8 hash[SHA1_HASH_SIZE];
  68
  69         SHA_CTX ctx;
  70         sha1_init(&ctx);
  71
  72         while (bytes_remaining) {
  73                 u64 to_read = min(bytes_remaining, WIM_CHUNK_SIZE);
  74                 ret = read_wim_resource(lte, buf, to_read, offset, false);
  75                 if (ret != 0)
  76                         break;
  77                 sha1_update(&ctx, buf, to_read);
  78                 if (ntfs_attr_pwrite(na, offset, to_read, buf) != to_read) {
  79                         ERROR_WITH_ERRNO("Error extracting WIM resource");
  80                         return WIMLIB_ERR_WRITE;
  81                 }
  82                 bytes_remaining -= to_read;
  83                 offset += to_read;
  84         }
  85         sha1_final(hash, &ctx);
  86         if (!hashes_equal(hash, lte->hash)) {
  87                 ERROR("Invalid checksum on a WIM resource "
  88                       "(detected when extracting to NTFS stream file)");
  89                 ERROR("The following WIM resource is invalid:");
  90                 print_lookup_table_entry(lte);
  91                 return WIMLIB_ERR_INVALID_RESOURCE_HASH;
  92         }
  93         return 0;
  94 }
  95
  96 /* Writes the data streams to a NTFS file
  97  *
  98  * @ni:      The NTFS inode for the file.
  99  * @dentry:  The directory entry in the WIM file.
 100  * @w:       The WIMStruct for the WIM containing the image we are applying.
 101  *
 102  * Returns 0 on success, nonzero on failure.
 103  */
 104 static int write_ntfs_data_streams(ntfs_inode *ni, const struct dentry *dentry,
 105                                    WIMStruct *w)
 106 {
 107         int ret = 0;
 108         unsigned stream_idx = 0;
 109         ntfschar *stream_name = AT_UNNAMED;
 110         u32 stream_name_len = 0;
 111
 112         DEBUG("Writing %u NTFS data stream%s for `%s'",
 113               dentry->num_ads + 1,
 114               (dentry->num_ads == 0 ? "" : "s"),
 115               dentry->full_path_utf8);
 116
 117         while (1) {
 118                 struct lookup_table_entry *lte;
 119                 ntfs_attr *na;
 120
 121                 lte = dentry_stream_lte(dentry, stream_idx, w->lookup_table);
 122                 na = ntfs_attr_open(ni, AT_DATA, stream_name, stream_name_len);
 123                 if (!na) {
 124                         ERROR_WITH_ERRNO("Failed to open a data stream of "
 125                                          "extracted file `%s'",
 126                                          dentry->full_path_utf8);
 127                         ret = WIMLIB_ERR_NTFS_3G;
 128                         break;
 129                 }
 130                 if (lte)
 131                         ret = extract_wim_resource_to_ntfs_attr(lte, na);
 132                 ntfs_attr_close(na);
 133                 if (ret != 0)
 134                         break;
 135                 if (stream_idx == dentry->num_ads)
 136                         break;
 137                 stream_name = (ntfschar*)dentry->ads_entries[stream_idx].stream_name;
 138                 stream_name_len = dentry->ads_entries[stream_idx].stream_name_len / 2;
 139                 stream_idx++;
 140         }
 141         return ret;
 142 }
 143
 144 /*
 145  * Makes a NTFS hard link
 146  *
 147  * It is named @from_dentry->file_name and is located under the directory
 148  * specified by @dir_ni, and it is made to point to the previously extracted
 149  * file located at @to_dentry->extracted_file.
 150  *
 151  * Return 0 on success, nonzero on failure.
 152  */
 153 static int wim_apply_hardlink_ntfs(const struct dentry *from_dentry,
 154                                    const struct dentry *to_dentry,
 155                                    ntfs_inode *dir_ni,
 156                                    ntfs_inode **to_ni_ret)
 157 {
 158         int ret;
 159         ntfs_inode *to_ni;
 160
 161         wimlib_assert(dentry_is_regular_file(from_dentry)
 162                         && dentry_is_regular_file(to_dentry));
 163
 164         DEBUG("Extracting NTFS hard link `%s' => `%s'",
 165               from_dentry->full_path_utf8, to_dentry->extracted_file);
 166
 167         to_ni = ntfs_pathname_to_inode(dir_ni->vol, NULL,
 168                                        to_dentry->extracted_file);
 169         if (!to_ni) {
 170                 ERROR_WITH_ERRNO("Could not find NTFS inode for `%s'",
 171                                  to_dentry->extracted_file);
 172                 return WIMLIB_ERR_NTFS_3G;
 173         }
 174         ret = ntfs_link(to_ni, dir_ni,
 175                         (ntfschar*)from_dentry->file_name,
 176                         from_dentry->file_name_len / 2);
 177         if (ret != 0) {
 178                 ERROR_WITH_ERRNO("Could not create hard link `%s' => `%s'",
 179                                  from_dentry->full_path_utf8,
 180                                  to_dentry->extracted_file);
 181                 ret = WIMLIB_ERR_NTFS_3G;
 182         }
 183         *to_ni_ret = to_ni;
 184         return ret;
 185 }
 186
 187 static int
 188 apply_file_attributes_and_security_data(ntfs_inode *ni,
 189                                         const struct dentry *dentry,
 190                                         const WIMStruct *w)
 191 {
 192         DEBUG("Setting NTFS file attributes on `%s' to %#"PRIx32,
 193               dentry->full_path_utf8, dentry->attributes);
 194         if (!_ntfs_set_file_attributes(ni, dentry->attributes)) {
 195                 ERROR("Failed to set NTFS file attributes on `%s'",
 196                        dentry->full_path_utf8);
 197                 return WIMLIB_ERR_NTFS_3G;
 198         }
 199
 200         if (dentry->security_id != -1) {
 201                 const struct wim_security_data *sd;
 202
 203                 sd = wim_const_security_data(w);
 204                 wimlib_assert(dentry->security_id < sd->num_entries);
 205                 DEBUG("Applying security descriptor %d to `%s'",
 206                       dentry->security_id, dentry->full_path_utf8);
 207                 u32 selection = OWNER_SECURITY_INFORMATION |
 208                                 GROUP_SECURITY_INFORMATION |
 209                                 DACL_SECURITY_INFORMATION  |
 210                                 SACL_SECURITY_INFORMATION;
 211
 212                 if (!_ntfs_set_file_security(ni, selection,
 213                                              sd->descriptors[dentry->security_id]))
 214                 {
 215                         ERROR_WITH_ERRNO("Failed to set security data on `%s'",
 216                                         dentry->full_path_utf8);
 217                         return WIMLIB_ERR_NTFS_3G;
 218                 }
 219         }
 220         return 0;
 221 }
 222
 223 static int apply_reparse_data(ntfs_inode *ni, const struct dentry *dentry,
 224                               const WIMStruct *w)
 225 {
 226         struct lookup_table_entry *lte;
 227         int ret = 0;
 228
 229         wimlib_assert(dentry->attributes & FILE_ATTRIBUTE_REPARSE_POINT);
 230
 231         lte = dentry_first_lte(dentry, w->lookup_table);
 232
 233         if (!lte) {
 234                 ERROR("Could not find reparse data for `%s'",
 235                       dentry->full_path_utf8);
 236                 return WIMLIB_ERR_INVALID_DENTRY;
 237         }
 238
 239         if (wim_resource_size(lte) >= 0xffff) {
 240                 ERROR("Reparse data of `%s' is too long (%lu bytes)",
 241                       dentry->full_path_utf8, wim_resource_size(lte));
 242                 return WIMLIB_ERR_INVALID_DENTRY;
 243         }
 244
 245         char reparse_data_buf[8 + wim_resource_size(lte)];
 246         char *p = reparse_data_buf;
 247         p = put_u32(p, dentry->reparse_tag); /* ReparseTag */
 248         p = put_u16(p, wim_resource_size(lte)); /* ReparseDataLength */
 249         p = put_u16(p, 0); /* Reserved */
 250
 251         ret = read_full_wim_resource(lte, p);
 252         if (ret != 0)
 253                 return ret;
 254
 255         ret = ntfs_set_ntfs_reparse_data(ni, reparse_data_buf,
 256                                          wim_resource_size(lte) + 8, 0);
 257         if (ret != 0) {
 258                 ERROR_WITH_ERRNO("Failed to set NTFS reparse data on `%s'",
 259                                  dentry->full_path_utf8);
 260                 return WIMLIB_ERR_NTFS_3G;
 261         }
 262         return 0;
 263 }
 264
 265 static int do_wim_apply_dentry_ntfs(struct dentry *dentry, ntfs_inode *dir_ni,
 266                                     WIMStruct *w);
 267
 268 /*
 269  * If @dentry is part of a hard link group, search for hard-linked dentries in
 270  * the same directory that have a nonempty DOS (short) filename.  There should
 271  * be exactly 0 or 1 such dentries.  If there is 1, extract that dentry first,
 272  * so that the DOS name is correctly associated with the corresponding long name
 273  * in the Win32 namespace, and not any of the additional names in the POSIX
 274  * namespace created from hard links.
 275  */
 276 static int preapply_dentry_with_dos_name(struct dentry *dentry,
 277                                          ntfs_inode **dir_ni_p,
 278                                          WIMStruct *w)
 279 {
 280         int ret;
 281         struct dentry *other;
 282         struct dentry *dentry_with_dos_name;
 283
 284         if (dentry->link_group_list.next == &dentry->link_group_list)
 285                 return 0;
 286
 287         dentry_with_dos_name = NULL;
 288         list_for_each_entry(other, &dentry->link_group_list,
 289                             link_group_list)
 290         {
 291                 if (dentry->parent == other->parent && other->short_name_len) {
 292                         if (dentry_with_dos_name) {
 293                                 ERROR("Found multiple DOS names for file `%s' "
 294                                       "in the same directory",
 295                                       dentry_with_dos_name->full_path_utf8);
 296                                 return WIMLIB_ERR_INVALID_DENTRY;
 297                         }
 298                         dentry_with_dos_name = other;
 299                 }
 300         }
 301         /* If there's a dentry with a DOS name, extract it first */
 302         if (dentry_with_dos_name && !dentry_with_dos_name->extracted_file) {
 303                 char *p;
 304                 const char *dir_name;
 305                 char orig;
 306                 ntfs_volume *vol = (*dir_ni_p)->vol;
 307
 308                 DEBUG("pre-applying DOS name `%s'", dentry_with_dos_name);
 309                 ret = do_wim_apply_dentry_ntfs(dentry_with_dos_name,
 310                                                *dir_ni_p, w);
 311                 if (ret != 0)
 312                         return ret;
 313                 p = dentry->full_path_utf8 + dentry->full_path_utf8_len;
 314                 do {
 315                         p--;
 316                 } while (*p != '/');
 317
 318                 orig = *p;
 319                 *p = '\0';
 320                 dir_name = dentry->full_path_utf8;
 321
 322                 *dir_ni_p = ntfs_pathname_to_inode(vol, NULL, dir_name);
 323                 *p = orig;
 324                 if (!*dir_ni_p) {
 325                         ERROR_WITH_ERRNO("Could not find NTFS inode for `%s'",
 326                                          dir_name);
 327                         return WIMLIB_ERR_NTFS_3G;
 328                 }
 329         }
 330         return 0;
 331 }
 332
 333 /*
 334  * Applies a WIM dentry to a NTFS filesystem.
 335  *
 336  * @dentry:  The WIM dentry to apply
 337  * @dir_ni:  The NTFS inode for the parent directory
 338  * @w:       The WIMStruct for the WIM containing the image we are applying.
 339  *
 340  * @return:  0 on success; nonzero on failure.
 341  */
 342 static int do_wim_apply_dentry_ntfs(struct dentry *dentry, ntfs_inode *dir_ni,
 343                                     WIMStruct *w)
 344 {
 345         int ret = 0;
 346         mode_t type;
 347         ntfs_inode *ni = NULL;
 348         bool is_hardlink = false;
 349         ntfs_volume *vol = dir_ni->vol;
 350
 351         if (dentry->attributes & FILE_ATTRIBUTE_DIRECTORY) {
 352                 type = S_IFDIR;
 353         } else {
 354                 struct dentry *other;
 355
 356                 ret = preapply_dentry_with_dos_name(dentry, &dir_ni, w);
 357                 if (ret != 0)
 358                         return ret;
 359
 360                 type = S_IFREG;
 361                 /* See if we can make a hard link */
 362                 list_for_each_entry(other, &dentry->link_group_list,
 363                                     link_group_list) {
 364                         if (other->extracted_file) {
 365                                 ret = wim_apply_hardlink_ntfs(dentry, other,
 366                                                               dir_ni, &ni);
 367                                 if (ret != 0)
 368                                         return ret;
 369                         }
 370                 }
 371                 /* Can't make a hard link */
 372                 FREE(dentry->extracted_file);
 373                 dentry->extracted_file = STRDUP(dentry->full_path_utf8);
 374                 if (!dentry->extracted_file) {
 375                         ERROR("Failed to allocate memory for filename");
 376                         return WIMLIB_ERR_NOMEM;
 377                 }
 378         }
 379
 380         /*
 381          * Create a directory or file.
 382          *
 383          * Note: For symbolic links that are not directory junctions, pass
 384          * S_IFREG here, since we manually set the reparse data later.
 385          */
 386         ni = ntfs_create(dir_ni, 0, (ntfschar*)dentry->file_name,
 387                          dentry->file_name_len / 2, type);
 388
 389         if (!ni) {
 390                 ERROR_WITH_ERRNO("Could not create NTFS object for `%s'",
 391                                  dentry->full_path_utf8);
 392                 ret = WIMLIB_ERR_NTFS_3G;
 393                 goto out_close_dir_ni;
 394         }
 395
 396         /* Write the data streams, unless this is a directory or reparse point
 397          * */
 398         if (!dentry_is_directory(dentry) &&
 399              !(dentry->attributes & FILE_ATTRIBUTE_REPARSE_POINT)) {
 400                 ret = write_ntfs_data_streams(ni, dentry, w);
 401                 if (ret != 0)
 402                         goto out_close_dir_ni;
 403         }
 404
 405
 406         ret = apply_file_attributes_and_security_data(ni, dentry, w);
 407         if (ret != 0)
 408                 goto out_close_dir_ni;
 409
 410         if (dentry->attributes & FILE_ATTR_REPARSE_POINT) {
 411                 ret = apply_reparse_data(ni, dentry, w);
 412                 if (ret != 0)
 413                         goto out_close_dir_ni;
 414         }
 415
 416 out_set_dos_name:
 417         /* Set DOS (short) name if given */
 418         if (dentry->short_name_len != 0) {
 419
 420                 char *short_name_utf8;
 421                 size_t short_name_utf8_len;
 422                 short_name_utf8 = utf16_to_utf8(dentry->short_name,
 423                                                 dentry->short_name_len,
 424                                                 &short_name_utf8_len);
 425                 if (!short_name_utf8) {
 426                         ERROR("Out of memory");
 427                         ret = WIMLIB_ERR_NOMEM;
 428                         goto out_close_dir_ni;
 429                 }
 430
 431                 if (is_hardlink) {
 432                         char *p;
 433                         char orig;
 434                         const char *dir_name;
 435
 436                         /* ntfs_set_ntfs_dos_name() closes the inodes in the
 437                          * wrong order if we have applied a hard link.   Close
 438                          * them ourselves, then re-open then. */
 439                         if (ntfs_inode_close(dir_ni) != 0) {
 440                                 if (ret == 0)
 441                                         ret = WIMLIB_ERR_NTFS_3G;
 442                                 ERROR_WITH_ERRNO("Failed to close directory inode");
 443                         }
 444                         if (ntfs_inode_close(ni) != 0) {
 445                                 if (ret == 0)
 446                                         ret = WIMLIB_ERR_NTFS_3G;
 447                                 ERROR_WITH_ERRNO("Failed to close hard link target inode");
 448                         }
 449                         p = dentry->full_path_utf8 + dentry->full_path_utf8_len;
 450                         do {
 451                                 p--;
 452                         } while (*p != '/');
 453
 454                         orig = *p;
 455                         *p = '\0';
 456                         dir_name = dentry->full_path_utf8;
 457
 458                         dir_ni = ntfs_pathname_to_inode(vol, NULL, dir_name);
 459                         *p = orig;
 460                         if (!dir_ni) {
 461                                 ERROR_WITH_ERRNO("Could not find NTFS inode for `%s'",
 462                                                  dir_name);
 463                                 return WIMLIB_ERR_NTFS_3G;
 464                         }
 465                         ni = ntfs_pathname_to_inode(vol, dir_ni,
 466                                                     dentry->file_name_utf8);
 467                         if (!ni) {
 468                                 ERROR_WITH_ERRNO("Could not find NTFS inode for `%s'",
 469                                                  dir_name);
 470                                 return WIMLIB_ERR_NTFS_3G;
 471                         }
 472                 }
 473
 474                 DEBUG("Setting short (DOS) name of `%s' to %s",
 475                       dentry->full_path_utf8, short_name_utf8);
 476
 477                 ret = ntfs_set_ntfs_dos_name(ni, dir_ni, short_name_utf8,
 478                                              short_name_utf8_len, 0);
 479                 FREE(short_name_utf8);
 480                 if (ret != 0) {
 481                         ERROR_WITH_ERRNO("Could not set DOS (short) name for `%s'",
 482                                          dentry->full_path_utf8);
 483                         ret = WIMLIB_ERR_NTFS_3G;
 484                 }
 485                 /* inodes have been closed by ntfs_set_ntfs_dos_name(). */
 486                 return ret;
 487         }
 488
 489 out_close_dir_ni:
 490         if (ntfs_inode_close(dir_ni) != 0) {
 491                 if (ret == 0)
 492                         ret = WIMLIB_ERR_NTFS_3G;
 493                 ERROR_WITH_ERRNO("Failed to close directory inode");
 494         }
 495 out_close_ni:
 496         if (ni && ntfs_inode_close(ni) != 0) {
 497                 if (ret == 0)
 498                         ret = WIMLIB_ERR_NTFS_3G;
 499                 ERROR_WITH_ERRNO("Failed to close inode");
 500         }
 501         return ret;
 502 }
 503
 504 static int wim_apply_root_dentry_ntfs(const struct dentry *dentry,
 505                                       ntfs_volume *vol,
 506                                       const WIMStruct *w)
 507 {
 508         ntfs_inode *ni;
 509         int ret = 0;
 510
 511         wimlib_assert(dentry_is_directory(dentry));
 512         ni = ntfs_pathname_to_inode(vol, NULL, "/");
 513         if (!ni) {
 514                 ERROR_WITH_ERRNO("Could not find root NTFS inode");
 515                 return WIMLIB_ERR_NTFS_3G;
 516         }
 517         ret = apply_file_attributes_and_security_data(ni, dentry, w);
 518         if (ntfs_inode_close(ni) != 0) {
 519                 ERROR_WITH_ERRNO("Failed to close NTFS inode for root "
 520                                  "directory");
 521                 ret = WIMLIB_ERR_NTFS_3G;
 522         }
 523         return ret;
 524 }
 525
 526 /* Applies a WIM dentry to the NTFS volume */
 527 static int wim_apply_dentry_ntfs(struct dentry *dentry, void *arg)
 528 {
 529         struct ntfs_apply_args *args = arg;
 530         ntfs_volume *vol             = args->vol;
 531         int extract_flags            = args->extract_flags;
 532         WIMStruct *w                 = args->w;
 533         ntfs_inode *dir_ni;
 534         int ret;
 535         char *p;
 536         char orig;
 537         ntfs_inode *close_after_dir;
 538         const char *dir_name;
 539
 540         if (dentry->extracted_file)
 541                 return 0;
 542
 543         wimlib_assert(dentry->full_path_utf8);
 544
 545         DEBUG("Applying dentry `%s' to NTFS", dentry->full_path_utf8);
 546
 547         if (extract_flags & WIMLIB_EXTRACT_FLAG_VERBOSE)
 548                 puts(dentry->full_path_utf8);
 549
 550         if (dentry_is_root(dentry))
 551                 return wim_apply_root_dentry_ntfs(dentry, vol, w);
 552
 553         p = dentry->full_path_utf8 + dentry->full_path_utf8_len;
 554         do {
 555                 p--;
 556         } while (*p != '/');
 557
 558         orig = *p;
 559         *p = '\0';
 560         dir_name = dentry->full_path_utf8;
 561
 562         dir_ni = ntfs_pathname_to_inode(vol, NULL, dir_name);
 563         if (dir_ni)
 564                 DEBUG("Found NTFS inode for `%s'", dir_name);
 565         *p = orig;
 566         if (!dir_ni) {
 567                 ERROR_WITH_ERRNO("Could not find NTFS inode for `%s'",
 568                                  dir_name);
 569                 return WIMLIB_ERR_NTFS_3G;
 570         }
 571         return do_wim_apply_dentry_ntfs(dentry, dir_ni, w);
 572 }
 573
 574 static int wim_apply_dentry_timestamps(struct dentry *dentry, void *arg)
 575 {
 576         struct ntfs_apply_args *args = arg;
 577         ntfs_volume *vol             = args->vol;
 578         int extract_flags            = args->extract_flags;
 579         WIMStruct *w                 = args->w;
 580         char *p;
 581         char buf[24];
 582         ntfs_inode *ni;
 583         int ret = 0;
 584
 585
 586         DEBUG("Setting timestamps on `%s'", dentry->full_path_utf8);
 587
 588         ni = ntfs_pathname_to_inode(vol, NULL, dentry->full_path_utf8);
 589         if (!ni) {
 590                 ERROR_WITH_ERRNO("Could not find NTFS inode for `%s'",
 591                                  dentry->full_path_utf8);
 592                 return WIMLIB_ERR_NTFS_3G;
 593         }
 594
 595         p = buf;
 596         p = put_u64(p, dentry->creation_time);
 597         p = put_u64(p, dentry->last_write_time);
 598         p = put_u64(p, dentry->last_access_time);
 599         ret = ntfs_inode_set_times(ni, buf, 3 * sizeof(u64), 0);
 600         if (ret != 0) {
 601                 ERROR_WITH_ERRNO("Failed to set NTFS timestamps on `%s'",
 602                                  dentry->full_path_utf8);
 603                 ret = WIMLIB_ERR_NTFS_3G;
 604         }
 605
 606         if (ntfs_inode_close(ni) != 0) {
 607                 if (ret == 0)
 608                         ret = WIMLIB_ERR_NTFS_3G;
 609                 ERROR_WITH_ERRNO("Failed to close NTFS inode for `%s'",
 610                                  dentry->full_path_utf8);
 611         }
 612         return ret;
 613 }
 614
 615 static int do_wim_apply_image_ntfs(WIMStruct *w, const char *device, int extract_flags)
 616 {
 617         ntfs_volume *vol;
 618         int ret;
 619
 620         vol = ntfs_mount(device, 0);
 621         if (!vol) {
 622                 ERROR_WITH_ERRNO("Failed to mount NTFS volume `%s'", device);
 623                 return WIMLIB_ERR_NTFS_3G;
 624         }
 625         struct ntfs_apply_args args = {
 626                 .vol           = vol,
 627                 .extract_flags = extract_flags,
 628                 .w             = w,
 629         };
 630         ret = for_dentry_in_tree(wim_root_dentry(w), wim_apply_dentry_ntfs,
 631                                  &args);
 632
 633         if (ret != 0)
 634                 goto out;
 635         DEBUG("Setting NTFS timestamps");
 636         ret = for_dentry_in_tree_depth(wim_root_dentry(w),
 637                                        wim_apply_dentry_timestamps,
 638                                        &args);
 639 out:
 640         if (ntfs_umount(vol, FALSE) != 0) {
 641                 ERROR_WITH_ERRNO("Failed to unmount NTFS volume `%s'", device);
 642                 if (ret == 0)
 643                         ret = WIMLIB_ERR_NTFS_3G;
 644         }
 645         return ret;
 646 }
 647
 648
 649 /*
 650  * API entry point for applying a WIM image to a NTFS volume.
 651  *
 652  * Please note that this is a NTFS *volume* and not a directory.  The intention
 653  * is that the volume contain an empty filesystem, and the WIM image contain a
 654  * full filesystem to be applied to the volume.
 655  */
 656 WIMLIBAPI int wimlib_apply_image_to_ntfs_volume(WIMStruct *w, int image,
 657                                                 const char *device, int flags)
 658 {
 659         int ret;
 660
 661         if (!device)
 662                 return WIMLIB_ERR_INVALID_PARAM;
 663         if (image == WIM_ALL_IMAGES) {
 664                 ERROR("Can only apply a single image when applying "
 665                       "directly to a NTFS volume");
 666                 return WIMLIB_ERR_INVALID_PARAM;
 667         }
 668         if (flags & (WIMLIB_EXTRACT_FLAG_SYMLINK | WIMLIB_EXTRACT_FLAG_HARDLINK)) {
 669                 ERROR("Cannot specify symlink or hardlink flags when applying ");
 670                 ERROR("directly to a NTFS volume");
 671                 return WIMLIB_ERR_INVALID_PARAM;
 672         }
 673         ret = wimlib_select_image(w, image);
 674         if (ret != 0)
 675                 return ret;
 676
 677 #if 0
 678         if (getuid() != 0) {
 679                 ERROR("We are not root, but NTFS-3g requires root privileges to set arbitrary");
 680                 ERROR("security data on the NTFS filesystem.  Please run this program as root");
 681                 ERROR("if you want to extract a WIM image while preserving NTFS-specific");
 682                 ERROR("information.");
 683
 684                 return WIMLIB_ERR_NOT_ROOT;
 685         }
 686 #endif
 687         return do_wim_apply_image_ntfs(w, device, flags);
 688 }
 689
 690 #else /* WITH_NTFS_3G */
 691 WIMLIBAPI int wimlib_apply_image_to_ntfs_volume(WIMStruct *w, int image,
 692                                                 const char *device, int flags)
 693 {
 694         ERROR("wimlib was compiled without support for NTFS-3g, so");
 695         ERROR("we cannot apply a WIM image directly to a NTFS volume");
 696         return WIMLIB_ERR_UNSUPPORTED;
 697 }
 698 #endif /* WITH_NTFS_3G */