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   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_inode_set_security(ntfs_inode *ni, u32 selection,
  53                                    const char *attr);
  54 extern int ntfs_inode_set_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)");
  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 static bool in_same_dir(const char *path1, const char *path2)
 145 {
 146         const char *p1 = strrchr(path1, '/');
 147         const char *p2 = strrchr(path2, '/');
 148         if (p1 - path1 != p2 - path2)
 149                 return false;
 150         return memcmp(path1, path2,  p1 - path1) == 0;
 151 }
 152
 153 /*
 154  * Makes a NTFS hard link
 155  *
 156  * It is named @from_dentry->file_name and is located under the directory
 157  * specified by @dir_ni, and it is made to point to the previously extracted
 158  * file located at @to_dentry->extracted_file.
 159  *
 160  * Return 0 on success, nonzero on failure.
 161  */
 162 static int wim_apply_hardlink_ntfs(const struct dentry *from_dentry,
 163                                    const struct dentry *to_dentry,
 164                                    ntfs_inode *dir_ni,
 165                                    ntfs_inode **to_ni_ret)
 166 {
 167         int ret;
 168         char *p;
 169         char orig;
 170         const char *dir_name;
 171
 172         ntfs_inode *to_ni;
 173         ntfs_volume *vol;
 174
 175         wimlib_assert(dentry_is_regular_file(from_dentry)
 176                         && dentry_is_regular_file(to_dentry));
 177
 178         if (ntfs_inode_close(dir_ni) != 0) {
 179                 ERROR_WITH_ERRNO("Error closing directory");
 180                 return WIMLIB_ERR_NTFS_3G;
 181         }
 182
 183         vol = dir_ni->vol;
 184
 185         DEBUG("Extracting NTFS hard link `%s' => `%s'",
 186               from_dentry->full_path_utf8, to_dentry->extracted_file);
 187
 188         to_ni = ntfs_pathname_to_inode(vol, NULL,
 189                                        to_dentry->extracted_file);
 190         if (!to_ni) {
 191                 ERROR_WITH_ERRNO("Could not find NTFS inode for `%s'",
 192                                  to_dentry->extracted_file);
 193                 return WIMLIB_ERR_NTFS_3G;
 194         }
 195         p = from_dentry->full_path_utf8 + from_dentry->full_path_utf8_len;
 196         do {
 197                 p--;
 198         } while (*p != '/');
 199
 200         orig = *p;
 201         *p = '\0';
 202         dir_name = from_dentry->full_path_utf8;
 203
 204         dir_ni = ntfs_pathname_to_inode(vol, NULL,
 205                                         from_dentry->full_path_utf8);
 206         if (!dir_ni) {
 207                 ERROR_WITH_ERRNO("Could not find NTFS inode for `%s'",
 208                                  from_dentry->full_path_utf8);
 209                 *p = orig;
 210                 return WIMLIB_ERR_NTFS_3G;
 211         }
 212         *p = orig;
 213
 214         ret = ntfs_link(to_ni, dir_ni,
 215                         (ntfschar*)from_dentry->file_name,
 216                         from_dentry->file_name_len / 2);
 217         if (ret != 0) {
 218                 ERROR_WITH_ERRNO("Could not create hard link `%s' => `%s'",
 219                                  from_dentry->full_path_utf8,
 220                                  to_dentry->extracted_file);
 221                 ret = WIMLIB_ERR_NTFS_3G;
 222         }
 223         *to_ni_ret = to_ni;
 224         return ret;
 225 }
 226
 227 static int
 228 apply_file_attributes_and_security_data(ntfs_inode *ni,
 229                                         const struct dentry *dentry,
 230                                         const WIMStruct *w)
 231 {
 232         DEBUG("Setting NTFS file attributes on `%s' to %#"PRIx32,
 233               dentry->full_path_utf8, dentry->attributes);
 234         if (!ntfs_inode_set_attributes(ni, dentry->attributes)) {
 235                 ERROR("Failed to set NTFS file attributes on `%s'",
 236                        dentry->full_path_utf8);
 237                 return WIMLIB_ERR_NTFS_3G;
 238         }
 239
 240         if (dentry->security_id != -1) {
 241                 const struct wim_security_data *sd;
 242
 243                 sd = wim_const_security_data(w);
 244                 wimlib_assert(dentry->security_id < sd->num_entries);
 245                 DEBUG("Applying security descriptor %d to `%s'",
 246                       dentry->security_id, dentry->full_path_utf8);
 247                 u32 selection = OWNER_SECURITY_INFORMATION |
 248                                 GROUP_SECURITY_INFORMATION |
 249                                 DACL_SECURITY_INFORMATION  |
 250                                 SACL_SECURITY_INFORMATION;
 251
 252                 if (!ntfs_inode_set_security(ni, selection,
 253                                              sd->descriptors[dentry->security_id]))
 254                 {
 255                         ERROR_WITH_ERRNO("Failed to set security data on `%s'",
 256                                         dentry->full_path_utf8);
 257                         return WIMLIB_ERR_NTFS_3G;
 258                 }
 259         }
 260         return 0;
 261 }
 262
 263 static int apply_reparse_data(ntfs_inode *ni, const struct dentry *dentry,
 264                               const WIMStruct *w)
 265 {
 266         struct lookup_table_entry *lte;
 267         int ret = 0;
 268
 269         wimlib_assert(dentry->attributes & FILE_ATTRIBUTE_REPARSE_POINT);
 270
 271         lte = dentry_unnamed_lte(dentry, w->lookup_table);
 272
 273         DEBUG("Applying reparse data to `%s'", dentry->full_path_utf8);
 274
 275         if (!lte) {
 276                 ERROR("Could not find reparse data for `%s'",
 277                       dentry->full_path_utf8);
 278                 return WIMLIB_ERR_INVALID_DENTRY;
 279         }
 280
 281         if (wim_resource_size(lte) >= 0xffff) {
 282                 ERROR("Reparse data of `%s' is too long (%lu bytes)",
 283                       dentry->full_path_utf8, wim_resource_size(lte));
 284                 return WIMLIB_ERR_INVALID_DENTRY;
 285         }
 286
 287         char reparse_data_buf[8 + wim_resource_size(lte)];
 288         char *p = reparse_data_buf;
 289         p = put_u32(p, dentry->reparse_tag); /* ReparseTag */
 290         p = put_u16(p, wim_resource_size(lte)); /* ReparseDataLength */
 291         p = put_u16(p, 0); /* Reserved */
 292
 293         ret = read_full_wim_resource(lte, p);
 294         if (ret != 0)
 295                 return ret;
 296
 297         ret = ntfs_set_ntfs_reparse_data(ni, reparse_data_buf,
 298                                          wim_resource_size(lte) + 8, 0);
 299         if (ret != 0) {
 300                 ERROR_WITH_ERRNO("Failed to set NTFS reparse data on `%s'",
 301                                  dentry->full_path_utf8);
 302                 return WIMLIB_ERR_NTFS_3G;
 303         }
 304         return 0;
 305 }
 306
 307 static int do_wim_apply_dentry_ntfs(struct dentry *dentry, ntfs_inode *dir_ni,
 308                                     WIMStruct *w);
 309
 310 /*
 311  * If @dentry is part of a hard link group, search for hard-linked dentries in
 312  * the same directory that have a nonempty DOS (short) filename.  There should
 313  * be exactly 0 or 1 such dentries.  If there is 1, extract that dentry first,
 314  * so that the DOS name is correctly associated with the corresponding long name
 315  * in the Win32 namespace, and not any of the additional names in the POSIX
 316  * namespace created from hard links.
 317  */
 318 static int preapply_dentry_with_dos_name(struct dentry *dentry,
 319                                          ntfs_inode **dir_ni_p,
 320                                          WIMStruct *w)
 321 {
 322         int ret;
 323         struct dentry *other;
 324         struct dentry *dentry_with_dos_name;
 325
 326         if (dentry->link_group_list.next == &dentry->link_group_list)
 327                 return 0;
 328
 329         dentry_with_dos_name = NULL;
 330         list_for_each_entry(other, &dentry->link_group_list,
 331                             link_group_list)
 332         {
 333                 if (dentry->parent == other->parent && other->short_name_len) {
 334                         if (dentry_with_dos_name) {
 335                                 ERROR("Found multiple DOS names for file `%s' "
 336                                       "in the same directory",
 337                                       dentry_with_dos_name->full_path_utf8);
 338                                 return WIMLIB_ERR_INVALID_DENTRY;
 339                         }
 340                         dentry_with_dos_name = other;
 341                 }
 342         }
 343         /* If there's a dentry with a DOS name, extract it first */
 344         if (dentry_with_dos_name && !dentry_with_dos_name->extracted_file) {
 345                 char *p;
 346                 const char *dir_name;
 347                 char orig;
 348                 ntfs_volume *vol = (*dir_ni_p)->vol;
 349
 350                 DEBUG("pre-applying DOS name `%s'",
 351                       dentry_with_dos_name->full_path_utf8);
 352                 ret = do_wim_apply_dentry_ntfs(dentry_with_dos_name,
 353                                                *dir_ni_p, w);
 354                 if (ret != 0)
 355                         return ret;
 356                 p = dentry->full_path_utf8 + dentry->full_path_utf8_len;
 357                 do {
 358                         p--;
 359                 } while (*p != '/');
 360
 361                 orig = *p;
 362                 *p = '\0';
 363                 dir_name = dentry->full_path_utf8;
 364
 365                 *dir_ni_p = ntfs_pathname_to_inode(vol, NULL, dir_name);
 366                 *p = orig;
 367                 if (!*dir_ni_p) {
 368                         ERROR_WITH_ERRNO("Could not find NTFS inode for `%s'",
 369                                          dir_name);
 370                         return WIMLIB_ERR_NTFS_3G;
 371                 }
 372         }
 373         return 0;
 374 }
 375
 376 /*
 377  * Applies a WIM dentry to a NTFS filesystem.
 378  *
 379  * @dentry:  The WIM dentry to apply
 380  * @dir_ni:  The NTFS inode for the parent directory
 381  * @w:       The WIMStruct for the WIM containing the image we are applying.
 382  *
 383  * @return:  0 on success; nonzero on failure.
 384  */
 385 static int do_wim_apply_dentry_ntfs(struct dentry *dentry, ntfs_inode *dir_ni,
 386                                     WIMStruct *w)
 387 {
 388         int ret = 0;
 389         mode_t type;
 390         ntfs_inode *ni = NULL;
 391         bool is_hardlink = false;
 392         ntfs_volume *vol = dir_ni->vol;
 393
 394         if (dentry->attributes & FILE_ATTRIBUTE_DIRECTORY) {
 395                 type = S_IFDIR;
 396         } else {
 397                 struct dentry *other;
 398
 399                 /* Apply hard-linked directory in same directory with DOS name
 400                  * (if there is one) before this dentry */
 401                 ret = preapply_dentry_with_dos_name(dentry, &dir_ni, w);
 402                 if (ret != 0)
 403                         return ret;
 404
 405                 type = S_IFREG;
 406                 /* See if we can make a hard link */
 407                 list_for_each_entry(other, &dentry->link_group_list,
 408                                     link_group_list) {
 409                         if (other->extracted_file) {
 410                                 /* Already extracted another dentry in the hard
 411                                  * link group.  We can make a hard link instead
 412                                  * of extracting the file data. */
 413                                 ret = wim_apply_hardlink_ntfs(dentry, other,
 414                                                               dir_ni, &ni);
 415                                 is_hardlink = true;
 416                                 if (ret != 0)
 417                                         goto out_close_dir_ni;
 418                                 else
 419                                         goto out_set_dos_name;
 420                         }
 421                 }
 422                 /* Can't make a hard link; extract the file itself */
 423                 FREE(dentry->extracted_file);
 424                 dentry->extracted_file = STRDUP(dentry->full_path_utf8);
 425                 if (!dentry->extracted_file) {
 426                         ERROR("Failed to allocate memory for filename");
 427                         return WIMLIB_ERR_NOMEM;
 428                 }
 429         }
 430
 431         /*
 432          * Create a directory or file.
 433          *
 434          * Note: For symbolic links that are not directory junctions, pass
 435          * S_IFREG here, since we manually set the reparse data later.
 436          */
 437         ni = ntfs_create(dir_ni, 0, (ntfschar*)dentry->file_name,
 438                          dentry->file_name_len / 2, type);
 439
 440         if (!ni) {
 441                 ERROR_WITH_ERRNO("Could not create NTFS object for `%s'",
 442                                  dentry->full_path_utf8);
 443                 ret = WIMLIB_ERR_NTFS_3G;
 444                 goto out_close_dir_ni;
 445         }
 446
 447         /* Write the data streams, unless this is a directory or reparse point
 448          * */
 449         if (!dentry_is_directory(dentry) &&
 450              !(dentry->attributes & FILE_ATTRIBUTE_REPARSE_POINT)) {
 451                 ret = write_ntfs_data_streams(ni, dentry, w);
 452                 if (ret != 0)
 453                         goto out_close_dir_ni;
 454         }
 455
 456
 457         ret = apply_file_attributes_and_security_data(ni, dentry, w);
 458         if (ret != 0)
 459                 goto out_close_dir_ni;
 460
 461         if (dentry->attributes & FILE_ATTR_REPARSE_POINT) {
 462                 ret = apply_reparse_data(ni, dentry, w);
 463                 if (ret != 0)
 464                         goto out_close_dir_ni;
 465         }
 466
 467 out_set_dos_name:
 468         /* Set DOS (short) name if given */
 469         if (dentry->short_name_len != 0) {
 470
 471                 char *short_name_utf8;
 472                 size_t short_name_utf8_len;
 473                 short_name_utf8 = utf16_to_utf8(dentry->short_name,
 474                                                 dentry->short_name_len,
 475                                                 &short_name_utf8_len);
 476                 if (!short_name_utf8) {
 477                         ERROR("Out of memory");
 478                         ret = WIMLIB_ERR_NOMEM;
 479                         goto out_close_dir_ni;
 480                 }
 481
 482                 if (is_hardlink) {
 483                         char *p;
 484                         char orig;
 485                         const char *dir_name;
 486
 487                         /* ntfs_set_ntfs_dos_name() closes the inodes in the
 488                          * wrong order if we have applied a hard link.   Close
 489                          * them ourselves, then re-open then. */
 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                         if (ntfs_inode_close(ni) != 0) {
 496                                 if (ret == 0)
 497                                         ret = WIMLIB_ERR_NTFS_3G;
 498                                 ERROR_WITH_ERRNO("Failed to close hard link target inode");
 499                         }
 500                         p = dentry->full_path_utf8 + dentry->full_path_utf8_len;
 501                         do {
 502                                 p--;
 503                         } while (*p != '/');
 504
 505                         orig = *p;
 506                         *p = '\0';
 507                         dir_name = dentry->full_path_utf8;
 508
 509                         dir_ni = ntfs_pathname_to_inode(vol, NULL, dir_name);
 510                         *p = orig;
 511                         if (!dir_ni) {
 512                                 ERROR_WITH_ERRNO("Could not find NTFS inode for `%s'",
 513                                                  dir_name);
 514                                 return WIMLIB_ERR_NTFS_3G;
 515                         }
 516                         ni = ntfs_pathname_to_inode(vol, dir_ni,
 517                                                     dentry->file_name_utf8);
 518                         if (!ni) {
 519                                 ERROR_WITH_ERRNO("Could not find NTFS inode for `%s'",
 520                                                  dir_name);
 521                                 return WIMLIB_ERR_NTFS_3G;
 522                         }
 523                 }
 524
 525                 DEBUG("Setting short (DOS) name of `%s' to %s",
 526                       dentry->full_path_utf8, short_name_utf8);
 527
 528                 ret = ntfs_set_ntfs_dos_name(ni, dir_ni, short_name_utf8,
 529                                              short_name_utf8_len, 0);
 530                 FREE(short_name_utf8);
 531                 if (ret != 0) {
 532                         ERROR_WITH_ERRNO("Could not set DOS (short) name for `%s'",
 533                                          dentry->full_path_utf8);
 534                         ret = WIMLIB_ERR_NTFS_3G;
 535                 }
 536                 /* inodes have been closed by ntfs_set_ntfs_dos_name(). */
 537                 return ret;
 538         }
 539
 540 out_close_dir_ni:
 541         if (ntfs_inode_close(dir_ni) != 0) {
 542                 if (ret == 0)
 543                         ret = WIMLIB_ERR_NTFS_3G;
 544                 ERROR_WITH_ERRNO("Failed to close directory inode");
 545         }
 546 out_close_ni:
 547         if (ni && ntfs_inode_close(ni) != 0) {
 548                 if (ret == 0)
 549                         ret = WIMLIB_ERR_NTFS_3G;
 550                 ERROR_WITH_ERRNO("Failed to close inode");
 551         }
 552         return ret;
 553 }
 554
 555 static int wim_apply_root_dentry_ntfs(const struct dentry *dentry,
 556                                       ntfs_volume *vol,
 557                                       const WIMStruct *w)
 558 {
 559         ntfs_inode *ni;
 560         int ret = 0;
 561
 562         wimlib_assert(dentry_is_directory(dentry));
 563         ni = ntfs_pathname_to_inode(vol, NULL, "/");
 564         if (!ni) {
 565                 ERROR_WITH_ERRNO("Could not find root NTFS inode");
 566                 return WIMLIB_ERR_NTFS_3G;
 567         }
 568         ret = apply_file_attributes_and_security_data(ni, dentry, w);
 569         if (ntfs_inode_close(ni) != 0) {
 570                 ERROR_WITH_ERRNO("Failed to close NTFS inode for root "
 571                                  "directory");
 572                 ret = WIMLIB_ERR_NTFS_3G;
 573         }
 574         return ret;
 575 }
 576
 577 /* Applies a WIM dentry to the NTFS volume */
 578 static int wim_apply_dentry_ntfs(struct dentry *dentry, void *arg)
 579 {
 580         struct ntfs_apply_args *args = arg;
 581         ntfs_volume *vol             = args->vol;
 582         int extract_flags            = args->extract_flags;
 583         WIMStruct *w                 = args->w;
 584         ntfs_inode *dir_ni;
 585         int ret;
 586         char *p;
 587         char orig;
 588         ntfs_inode *close_after_dir;
 589         const char *dir_name;
 590
 591         if (dentry->extracted_file)
 592                 return 0;
 593
 594         wimlib_assert(dentry->full_path_utf8);
 595
 596         DEBUG("Applying dentry `%s' to NTFS", dentry->full_path_utf8);
 597
 598         if (extract_flags & WIMLIB_EXTRACT_FLAG_VERBOSE)
 599                 puts(dentry->full_path_utf8);
 600
 601         if (dentry_is_root(dentry))
 602                 return wim_apply_root_dentry_ntfs(dentry, vol, w);
 603
 604         p = dentry->full_path_utf8 + dentry->full_path_utf8_len;
 605         do {
 606                 p--;
 607         } while (*p != '/');
 608
 609         orig = *p;
 610         *p = '\0';
 611         dir_name = dentry->full_path_utf8;
 612
 613         dir_ni = ntfs_pathname_to_inode(vol, NULL, dir_name);
 614         if (dir_ni)
 615                 DEBUG("Found NTFS inode for `%s'", dir_name);
 616         *p = orig;
 617         if (!dir_ni) {
 618                 ERROR_WITH_ERRNO("Could not find NTFS inode for `%s'",
 619                                  dir_name);
 620                 return WIMLIB_ERR_NTFS_3G;
 621         }
 622         return do_wim_apply_dentry_ntfs(dentry, dir_ni, w);
 623 }
 624
 625 static int wim_apply_dentry_timestamps(struct dentry *dentry, void *arg)
 626 {
 627         struct ntfs_apply_args *args = arg;
 628         ntfs_volume *vol             = args->vol;
 629         int extract_flags            = args->extract_flags;
 630         WIMStruct *w                 = args->w;
 631         char *p;
 632         char buf[24];
 633         ntfs_inode *ni;
 634         int ret = 0;
 635
 636
 637         DEBUG("Setting timestamps on `%s'", dentry->full_path_utf8);
 638
 639         ni = ntfs_pathname_to_inode(vol, NULL, dentry->full_path_utf8);
 640         if (!ni) {
 641                 ERROR_WITH_ERRNO("Could not find NTFS inode for `%s'",
 642                                  dentry->full_path_utf8);
 643                 return WIMLIB_ERR_NTFS_3G;
 644         }
 645
 646         p = buf;
 647         p = put_u64(p, dentry->creation_time);
 648         p = put_u64(p, dentry->last_write_time);
 649         p = put_u64(p, dentry->last_access_time);
 650         ret = ntfs_inode_set_times(ni, buf, 3 * sizeof(u64), 0);
 651         if (ret != 0) {
 652                 ERROR_WITH_ERRNO("Failed to set NTFS timestamps on `%s'",
 653                                  dentry->full_path_utf8);
 654                 ret = WIMLIB_ERR_NTFS_3G;
 655         }
 656
 657         if (ntfs_inode_close(ni) != 0) {
 658                 if (ret == 0)
 659                         ret = WIMLIB_ERR_NTFS_3G;
 660                 ERROR_WITH_ERRNO("Failed to close NTFS inode for `%s'",
 661                                  dentry->full_path_utf8);
 662         }
 663         return ret;
 664 }
 665
 666 static int do_wim_apply_image_ntfs(WIMStruct *w, const char *device, int extract_flags)
 667 {
 668         ntfs_volume *vol;
 669         int ret;
 670
 671         DEBUG("Mounting NTFS volume `%s'", device);
 672         vol = ntfs_mount(device, 0);
 673         if (!vol) {
 674                 ERROR_WITH_ERRNO("Failed to mount NTFS volume `%s'", device);
 675                 return WIMLIB_ERR_NTFS_3G;
 676         }
 677         struct ntfs_apply_args args = {
 678                 .vol           = vol,
 679                 .extract_flags = extract_flags,
 680                 .w             = w,
 681         };
 682         ret = for_dentry_in_tree(wim_root_dentry(w), wim_apply_dentry_ntfs,
 683                                  &args);
 684
 685         if (ret != 0)
 686                 goto out;
 687         DEBUG("Setting NTFS timestamps");
 688         ret = for_dentry_in_tree_depth(wim_root_dentry(w),
 689                                        wim_apply_dentry_timestamps,
 690                                        &args);
 691 out:
 692         DEBUG("Unmounting NTFS volume `%s'", device);
 693         if (ntfs_umount(vol, FALSE) != 0) {
 694                 ERROR_WITH_ERRNO("Failed to unmount NTFS volume `%s'", device);
 695                 if (ret == 0)
 696                         ret = WIMLIB_ERR_NTFS_3G;
 697         }
 698         return ret;
 699 }
 700
 701
 702 /*
 703  * API entry point for applying a WIM image to a NTFS volume.
 704  *
 705  * Please note that this is a NTFS *volume* and not a directory.  The intention
 706  * is that the volume contain an empty filesystem, and the WIM image contain a
 707  * full filesystem to be applied to the volume.
 708  */
 709 WIMLIBAPI int wimlib_apply_image_to_ntfs_volume(WIMStruct *w, int image,
 710                                                 const char *device, int flags)
 711 {
 712         int ret;
 713
 714         if (!device)
 715                 return WIMLIB_ERR_INVALID_PARAM;
 716         if (image == WIM_ALL_IMAGES) {
 717                 ERROR("Can only apply a single image when applying "
 718                       "directly to a NTFS volume");
 719                 return WIMLIB_ERR_INVALID_PARAM;
 720         }
 721         if (flags & (WIMLIB_EXTRACT_FLAG_SYMLINK | WIMLIB_EXTRACT_FLAG_HARDLINK)) {
 722                 ERROR("Cannot specify symlink or hardlink flags when applying ");
 723                 ERROR("directly to a NTFS volume");
 724                 return WIMLIB_ERR_INVALID_PARAM;
 725         }
 726         ret = wimlib_select_image(w, image);
 727         if (ret != 0)
 728                 return ret;
 729
 730         return do_wim_apply_image_ntfs(w, device, flags);
 731 }
 732
 733 #else /* WITH_NTFS_3G */
 734 WIMLIBAPI int wimlib_apply_image_to_ntfs_volume(WIMStruct *w, int image,
 735                                                 const char *device, int flags)
 736 {
 737         ERROR("wimlib was compiled without support for NTFS-3g, so");
 738         ERROR("we cannot apply a WIM image directly to a NTFS volume");
 739         return WIMLIB_ERR_UNSUPPORTED;
 740 }
 741 #endif /* WITH_NTFS_3G */