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   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 #include "config.h"
  28 #include "wimlib_internal.h"
  29
  30
  31 #ifdef WITH_NTFS_3G
  32 #include "dentry.h"
  33 #include "lookup_table.h"
  34 #include "io.h"
  35 #include <ntfs-3g/layout.h>
  36 #include <ntfs-3g/acls.h>
  37 #include <ntfs-3g/attrib.h>
  38 #include <ntfs-3g/misc.h>
  39 #include <ntfs-3g/reparse.h>
  40 #include <ntfs-3g/security.h>
  41 #include <ntfs-3g/volume.h>
  42 #include <stdlib.h>
  43 #include <unistd.h>
  44
  45 struct ntfs_apply_args {
  46         ntfs_volume *vol;
  47         int extract_flags;
  48         WIMStruct *w;
  49 };
  50
  51
  52 #ifndef WITH_NEW_NTFS_3G
  53 extern int ntfs_set_inode_security(ntfs_inode *ni, u32 selection,
  54                                    const char *attr);
  55 extern int ntfs_set_inode_attributes(ntfs_inode *ni, u32 attrib);
  56 #endif
  57
  58 /*
  59  * Extracts a WIM resource to a NTFS attribute.
  60  */
  61 static int
  62 extract_wim_resource_to_ntfs_attr(const struct lookup_table_entry *lte,
  63                                   ntfs_attr *na)
  64 {
  65         u64 bytes_remaining = wim_resource_size(lte);
  66         u8 buf[min(WIM_CHUNK_SIZE, bytes_remaining)];
  67         u64 offset = 0;
  68         int ret = 0;
  69         u8 hash[SHA1_HASH_SIZE];
  70
  71         SHA_CTX ctx;
  72         sha1_init(&ctx);
  73
  74         while (bytes_remaining) {
  75                 u64 to_read = min(bytes_remaining, WIM_CHUNK_SIZE);
  76                 ret = read_wim_resource(lte, buf, to_read, offset, false);
  77                 if (ret != 0)
  78                         break;
  79                 sha1_update(&ctx, buf, to_read);
  80                 if (ntfs_attr_pwrite(na, offset, to_read, buf) != to_read) {
  81                         ERROR_WITH_ERRNO("Error extracting WIM resource");
  82                         return WIMLIB_ERR_WRITE;
  83                 }
  84                 bytes_remaining -= to_read;
  85                 offset += to_read;
  86         }
  87         sha1_final(hash, &ctx);
  88         if (!hashes_equal(hash, lte->hash)) {
  89                 ERROR("Invalid checksum on a WIM resource "
  90                       "(detected when extracting to NTFS stream)");
  91                 ERROR("The following WIM resource is invalid:");
  92                 print_lookup_table_entry(lte);
  93                 return WIMLIB_ERR_INVALID_RESOURCE_HASH;
  94         }
  95         return 0;
  96 }
  97
  98 /* Writes the data streams to a NTFS file
  99  *
 100  * @ni:      The NTFS inode for the file.
 101  * @dentry:  The directory entry in the WIM file.
 102  * @w:       The WIMStruct for the WIM containing the image we are applying.
 103  *
 104  * Returns 0 on success, nonzero on failure.
 105  */
 106 static int write_ntfs_data_streams(ntfs_inode *ni, const struct dentry *dentry,
 107                                    WIMStruct *w)
 108 {
 109         int ret = 0;
 110         unsigned stream_idx = 0;
 111         ntfschar *stream_name = AT_UNNAMED;
 112         u32 stream_name_len = 0;
 113
 114         DEBUG("Writing %u NTFS data stream%s for `%s'",
 115               dentry->num_ads + 1,
 116               (dentry->num_ads == 0 ? "" : "s"),
 117               dentry->full_path_utf8);
 118
 119         while (1) {
 120                 struct lookup_table_entry *lte;
 121                 ntfs_attr *na;
 122
 123                 lte = dentry_stream_lte(dentry, stream_idx, w->lookup_table);
 124
 125                 if (stream_name_len) {
 126                         /* Create an empty named stream. */
 127                         ret = ntfs_attr_add(ni, AT_DATA, stream_name,
 128                                             stream_name_len, NULL, 0);
 129                         if (ret != 0) {
 130                                 ERROR_WITH_ERRNO("Failed to create name data "
 131                                                  "stream for extracted file "
 132                                                  "`%s'",
 133                                                  dentry->full_path_utf8);
 134                                 ret = WIMLIB_ERR_NTFS_3G;
 135                                 break;
 136
 137                         }
 138                 }
 139                 /* If there's no lookup table entry, it's an empty stream.
 140                  * Otherwise, we must open the attribute and extract the data.
 141                  * */
 142                 if (lte) {
 143                         na = ntfs_attr_open(ni, AT_DATA, stream_name, stream_name_len);
 144                         if (!na) {
 145                                 ERROR_WITH_ERRNO("Failed to open a data stream of "
 146                                                  "extracted file `%s'",
 147                                                  dentry->full_path_utf8);
 148                                 ret = WIMLIB_ERR_NTFS_3G;
 149                                 break;
 150                         }
 151                         ret = extract_wim_resource_to_ntfs_attr(lte, na);
 152                         if (ret != 0)
 153                                 break;
 154                         ntfs_attr_close(na);
 155                 }
 156                 if (stream_idx == dentry->num_ads)
 157                         break;
 158                 stream_name = (ntfschar*)dentry->ads_entries[stream_idx].stream_name;
 159                 stream_name_len = dentry->ads_entries[stream_idx].stream_name_len / 2;
 160                 stream_idx++;
 161         }
 162         return ret;
 163 }
 164
 165 /*
 166  * Makes a NTFS hard link
 167  *
 168  * It is named @from_dentry->file_name and is located under the directory
 169  * specified by @dir_ni, and it is made to point to the previously extracted
 170  * file located at @to_dentry->extracted_file.
 171  *
 172  * Return 0 on success, nonzero on failure.
 173  */
 174 static int wim_apply_hardlink_ntfs(const struct dentry *from_dentry,
 175                                    const struct dentry *to_dentry,
 176                                    ntfs_inode *dir_ni,
 177                                    ntfs_inode **to_ni_ret)
 178 {
 179         int ret;
 180         char *p;
 181         char orig;
 182         const char *dir_name;
 183
 184         ntfs_inode *to_ni;
 185         ntfs_volume *vol;
 186
 187         wimlib_assert(dentry_is_regular_file(from_dentry)
 188                         && dentry_is_regular_file(to_dentry));
 189
 190         if (ntfs_inode_close(dir_ni) != 0) {
 191                 ERROR_WITH_ERRNO("Error closing directory");
 192                 return WIMLIB_ERR_NTFS_3G;
 193         }
 194
 195         vol = dir_ni->vol;
 196
 197         DEBUG("Extracting NTFS hard link `%s' => `%s'",
 198               from_dentry->full_path_utf8, to_dentry->extracted_file);
 199
 200         to_ni = ntfs_pathname_to_inode(vol, NULL,
 201                                        to_dentry->extracted_file);
 202         if (!to_ni) {
 203                 ERROR_WITH_ERRNO("Could not find NTFS inode for `%s'",
 204                                  to_dentry->extracted_file);
 205                 return WIMLIB_ERR_NTFS_3G;
 206         }
 207         p = from_dentry->full_path_utf8 + from_dentry->full_path_utf8_len;
 208         do {
 209                 p--;
 210         } while (*p != '/');
 211
 212         orig = *p;
 213         *p = '\0';
 214         dir_name = from_dentry->full_path_utf8;
 215
 216         dir_ni = ntfs_pathname_to_inode(vol, NULL, dir_name);
 217         if (!dir_ni) {
 218                 ERROR_WITH_ERRNO("Could not find NTFS inode for `%s'",
 219                                  from_dentry->full_path_utf8);
 220                 *p = orig;
 221                 return WIMLIB_ERR_NTFS_3G;
 222         }
 223         *p = orig;
 224
 225         ret = ntfs_link(to_ni, dir_ni,
 226                         (ntfschar*)from_dentry->file_name,
 227                         from_dentry->file_name_len / 2);
 228         if (ret != 0) {
 229                 ERROR_WITH_ERRNO("Could not create hard link `%s' => `%s'",
 230                                  from_dentry->full_path_utf8,
 231                                  to_dentry->extracted_file);
 232                 ret = WIMLIB_ERR_NTFS_3G;
 233         }
 234         *to_ni_ret = to_ni;
 235         return ret;
 236 }
 237
 238 static int
 239 apply_file_attributes_and_security_data(ntfs_inode *ni,
 240                                         const struct dentry *dentry,
 241                                         const WIMStruct *w)
 242 {
 243         DEBUG("Setting NTFS file attributes on `%s' to %#"PRIx32,
 244               dentry->full_path_utf8, dentry->attributes);
 245         if (ntfs_set_inode_attributes(ni, dentry->attributes)) {
 246                 ERROR("Failed to set NTFS file attributes on `%s'",
 247                        dentry->full_path_utf8);
 248                 return WIMLIB_ERR_NTFS_3G;
 249         }
 250
 251         if (dentry->security_id != -1) {
 252                 const struct wim_security_data *sd;
 253
 254                 sd = wim_const_security_data(w);
 255                 wimlib_assert(dentry->security_id < sd->num_entries);
 256                 DEBUG("Applying security descriptor %d to `%s'",
 257                       dentry->security_id, dentry->full_path_utf8);
 258                 u32 selection = OWNER_SECURITY_INFORMATION |
 259                                 GROUP_SECURITY_INFORMATION |
 260                                 DACL_SECURITY_INFORMATION  |
 261                                 SACL_SECURITY_INFORMATION;
 262
 263                 if (ntfs_set_inode_security(ni, selection,
 264                                             (const char*)sd->descriptors[dentry->security_id]))
 265                 {
 266                         ERROR_WITH_ERRNO("Failed to set security data on `%s'",
 267                                         dentry->full_path_utf8);
 268                         return WIMLIB_ERR_NTFS_3G;
 269                 }
 270         }
 271         return 0;
 272 }
 273
 274 static int apply_reparse_data(ntfs_inode *ni, const struct dentry *dentry,
 275                               const WIMStruct *w)
 276 {
 277         struct lookup_table_entry *lte;
 278         int ret = 0;
 279
 280         wimlib_assert(dentry->attributes & FILE_ATTRIBUTE_REPARSE_POINT);
 281
 282         lte = dentry_unnamed_lte(dentry, w->lookup_table);
 283
 284         DEBUG("Applying reparse data to `%s'", dentry->full_path_utf8);
 285
 286         if (!lte) {
 287                 ERROR("Could not find reparse data for `%s'",
 288                       dentry->full_path_utf8);
 289                 return WIMLIB_ERR_INVALID_DENTRY;
 290         }
 291
 292         if (wim_resource_size(lte) >= 0xffff) {
 293                 ERROR("Reparse data of `%s' is too long (%lu bytes)",
 294                       dentry->full_path_utf8, wim_resource_size(lte));
 295                 return WIMLIB_ERR_INVALID_DENTRY;
 296         }
 297
 298         u8 reparse_data_buf[8 + wim_resource_size(lte)];
 299         u8 *p = reparse_data_buf;
 300         p = put_u32(p, dentry->reparse_tag); /* ReparseTag */
 301         p = put_u16(p, wim_resource_size(lte)); /* ReparseDataLength */
 302         p = put_u16(p, 0); /* Reserved */
 303
 304         ret = read_full_wim_resource(lte, p);
 305         if (ret != 0)
 306                 return ret;
 307
 308         ret = ntfs_set_ntfs_reparse_data(ni, (char*)reparse_data_buf,
 309                                          wim_resource_size(lte) + 8, 0);
 310         if (ret != 0) {
 311                 ERROR_WITH_ERRNO("Failed to set NTFS reparse data on `%s'",
 312                                  dentry->full_path_utf8);
 313                 return WIMLIB_ERR_NTFS_3G;
 314         }
 315         return 0;
 316 }
 317
 318 static int do_wim_apply_dentry_ntfs(struct dentry *dentry, ntfs_inode *dir_ni,
 319                                     WIMStruct *w);
 320
 321 /*
 322  * If @dentry is part of a hard link group, search for hard-linked dentries in
 323  * the same directory that have a nonempty DOS (short) filename.  There should
 324  * be exactly 0 or 1 such dentries.  If there is 1, extract that dentry first,
 325  * so that the DOS name is correctly associated with the corresponding long name
 326  * in the Win32 namespace, and not any of the additional names in the POSIX
 327  * namespace created from hard links.
 328  */
 329 static int preapply_dentry_with_dos_name(struct dentry *dentry,
 330                                          ntfs_inode **dir_ni_p,
 331                                          WIMStruct *w)
 332 {
 333         struct dentry *other;
 334         struct dentry *dentry_with_dos_name;
 335
 336         dentry_with_dos_name = NULL;
 337         list_for_each_entry(other, &dentry->link_group_list,
 338                             link_group_list)
 339         {
 340                 if (dentry->parent == other->parent && other->short_name_len) {
 341                         if (dentry_with_dos_name) {
 342                                 ERROR("Found multiple DOS names for file `%s' "
 343                                       "in the same directory",
 344                                       dentry_with_dos_name->full_path_utf8);
 345                                 return WIMLIB_ERR_INVALID_DENTRY;
 346                         }
 347                         dentry_with_dos_name = other;
 348                 }
 349         }
 350         /* If there's a dentry with a DOS name, extract it first */
 351         if (dentry_with_dos_name
 352             && !dentry_with_dos_name->extracted_file)
 353         {
 354                 char *p;
 355                 const char *dir_name;
 356                 char orig;
 357                 int ret;
 358                 ntfs_volume *vol = (*dir_ni_p)->vol;
 359
 360                 DEBUG("pre-applying DOS name `%s'",
 361                       dentry_with_dos_name->full_path_utf8);
 362                 ret = do_wim_apply_dentry_ntfs(dentry_with_dos_name,
 363                                                *dir_ni_p, w);
 364                 if (ret != 0)
 365                         return ret;
 366                 p = dentry->full_path_utf8 + dentry->full_path_utf8_len;
 367                 do {
 368                         p--;
 369                 } while (*p != '/');
 370
 371                 orig = *p;
 372                 *p = '\0';
 373                 dir_name = dentry->full_path_utf8;
 374
 375                 *dir_ni_p = ntfs_pathname_to_inode(vol, NULL, dir_name);
 376                 *p = orig;
 377                 if (!*dir_ni_p) {
 378                         ERROR_WITH_ERRNO("Could not find NTFS inode for `%s'",
 379                                          dir_name);
 380                         return WIMLIB_ERR_NTFS_3G;
 381                 }
 382         }
 383         return 0;
 384 }
 385
 386 /*
 387  * Applies a WIM dentry to a NTFS filesystem.
 388  *
 389  * @dentry:  The WIM dentry to apply
 390  * @dir_ni:  The NTFS inode for the parent directory
 391  * @w:       The WIMStruct for the WIM containing the image we are applying.
 392  *
 393  * @return:  0 on success; nonzero on failure.
 394  */
 395 static int do_wim_apply_dentry_ntfs(struct dentry *dentry, ntfs_inode *dir_ni,
 396                                     WIMStruct *w)
 397 {
 398         int ret = 0;
 399         mode_t type;
 400         ntfs_inode *ni = NULL;
 401         bool is_hardlink = false;
 402         ntfs_volume *vol = dir_ni->vol;
 403
 404         if (dentry->attributes & FILE_ATTRIBUTE_DIRECTORY) {
 405                 type = S_IFDIR;
 406         } else {
 407                 struct dentry *other;
 408
 409                 /* Apply hard-linked directory in same directory with DOS name
 410                  * (if there is one) before this dentry */
 411                 if (dentry->short_name_len == 0) {
 412                         ret = preapply_dentry_with_dos_name(dentry,
 413                                                             &dir_ni, w);
 414                         if (ret != 0)
 415                                 return ret;
 416                 }
 417
 418                 type = S_IFREG;
 419                 /* See if we can make a hard link */
 420                 list_for_each_entry(other, &dentry->link_group_list,
 421                                     link_group_list) {
 422                         if (other->extracted_file) {
 423                                 /* Already extracted another dentry in the hard
 424                                  * link group.  We can make a hard link instead
 425                                  * of extracting the file data. */
 426                                 ret = wim_apply_hardlink_ntfs(dentry, other,
 427                                                               dir_ni, &ni);
 428                                 is_hardlink = true;
 429                                 if (ret) {
 430                                         goto out_close_dir_ni;
 431                                 } else {
 432                                         dentry->extracted_file = dentry->full_path_utf8;
 433                                         goto out_set_dos_name;
 434                                 }
 435                         }
 436                 }
 437                 /* Can't make a hard link; extract the file itself */
 438                 dentry->extracted_file = dentry->full_path_utf8;
 439         }
 440
 441         /*
 442          * Create a directory or file.
 443          *
 444          * Note: For symbolic links that are not directory junctions, pass
 445          * S_IFREG here, since we manually set the reparse data later.
 446          */
 447         ni = ntfs_create(dir_ni, 0, (ntfschar*)dentry->file_name,
 448                          dentry->file_name_len / 2, type);
 449
 450         if (!ni) {
 451                 ERROR_WITH_ERRNO("Could not create NTFS object for `%s'",
 452                                  dentry->full_path_utf8);
 453                 ret = WIMLIB_ERR_NTFS_3G;
 454                 goto out_close_dir_ni;
 455         }
 456
 457         /* Write the data streams, unless this is a directory or reparse point
 458          * */
 459         if (!dentry_is_directory(dentry) &&
 460              !(dentry->attributes & FILE_ATTRIBUTE_REPARSE_POINT)) {
 461                 ret = write_ntfs_data_streams(ni, dentry, w);
 462                 if (ret != 0)
 463                         goto out_close_dir_ni;
 464         }
 465
 466
 467         ret = apply_file_attributes_and_security_data(ni, dentry, w);
 468         if (ret != 0)
 469                 goto out_close_dir_ni;
 470
 471         if (dentry->attributes & FILE_ATTR_REPARSE_POINT) {
 472                 ret = apply_reparse_data(ni, dentry, w);
 473                 if (ret != 0)
 474                         goto out_close_dir_ni;
 475         }
 476
 477 out_set_dos_name:
 478         /* Set DOS (short) name if given */
 479         if (dentry->short_name_len != 0) {
 480
 481                 char *short_name_utf8;
 482                 size_t short_name_utf8_len;
 483                 short_name_utf8 = utf16_to_utf8(dentry->short_name,
 484                                                 dentry->short_name_len,
 485                                                 &short_name_utf8_len);
 486                 if (!short_name_utf8) {
 487                         ERROR("Out of memory");
 488                         ret = WIMLIB_ERR_NOMEM;
 489                         goto out_close_dir_ni;
 490                 }
 491
 492                 if (is_hardlink) {
 493                         char *p;
 494                         char orig;
 495                         const char *dir_name;
 496
 497                         /* ntfs_set_ntfs_dos_name() closes the inodes in the
 498                          * wrong order if we have applied a hard link.   Close
 499                          * them ourselves, then re-open then. */
 500                         if (ntfs_inode_close(dir_ni) != 0) {
 501                                 if (ret == 0)
 502                                         ret = WIMLIB_ERR_NTFS_3G;
 503                                 ERROR_WITH_ERRNO("Failed to close directory inode");
 504                         }
 505                         if (ntfs_inode_close(ni) != 0) {
 506                                 if (ret == 0)
 507                                         ret = WIMLIB_ERR_NTFS_3G;
 508                                 ERROR_WITH_ERRNO("Failed to close hard link target inode");
 509                         }
 510                         p = dentry->full_path_utf8 + dentry->full_path_utf8_len;
 511                         do {
 512                                 p--;
 513                         } while (*p != '/');
 514
 515                         orig = *p;
 516                         *p = '\0';
 517                         dir_name = dentry->full_path_utf8;
 518
 519                         dir_ni = ntfs_pathname_to_inode(vol, NULL, dir_name);
 520                         *p = orig;
 521                         if (!dir_ni) {
 522                                 ERROR_WITH_ERRNO("Could not find NTFS inode for `%s'",
 523                                                  dir_name);
 524                                 return WIMLIB_ERR_NTFS_3G;
 525                         }
 526                         ni = ntfs_pathname_to_inode(vol, dir_ni,
 527                                                     dentry->file_name_utf8);
 528                         if (!ni) {
 529                                 ERROR_WITH_ERRNO("Could not find NTFS inode for `%s'",
 530                                                  dir_name);
 531                                 return WIMLIB_ERR_NTFS_3G;
 532                         }
 533                 }
 534
 535                 DEBUG("Setting short (DOS) name of `%s' to %s",
 536                       dentry->full_path_utf8, short_name_utf8);
 537
 538                 ret = ntfs_set_ntfs_dos_name(ni, dir_ni, short_name_utf8,
 539                                              short_name_utf8_len, 0);
 540                 FREE(short_name_utf8);
 541                 if (ret != 0) {
 542                         ERROR_WITH_ERRNO("Could not set DOS (short) name for `%s'",
 543                                          dentry->full_path_utf8);
 544                         ret = WIMLIB_ERR_NTFS_3G;
 545                 }
 546                 /* inodes have been closed by ntfs_set_ntfs_dos_name(). */
 547                 return ret;
 548         }
 549
 550 out_close_dir_ni:
 551         if (ntfs_inode_close(dir_ni) != 0) {
 552                 if (ret == 0)
 553                         ret = WIMLIB_ERR_NTFS_3G;
 554                 ERROR_WITH_ERRNO("Failed to close directory inode");
 555         }
 556         if (ni && ntfs_inode_close(ni) != 0) {
 557                 if (ret == 0)
 558                         ret = WIMLIB_ERR_NTFS_3G;
 559                 ERROR_WITH_ERRNO("Failed to close inode");
 560         }
 561         return ret;
 562 }
 563
 564 static int wim_apply_root_dentry_ntfs(const struct dentry *dentry,
 565                                       ntfs_volume *vol,
 566                                       const WIMStruct *w)
 567 {
 568         ntfs_inode *ni;
 569         int ret = 0;
 570
 571         wimlib_assert(dentry_is_directory(dentry));
 572         ni = ntfs_pathname_to_inode(vol, NULL, "/");
 573         if (!ni) {
 574                 ERROR_WITH_ERRNO("Could not find root NTFS inode");
 575                 return WIMLIB_ERR_NTFS_3G;
 576         }
 577         ret = apply_file_attributes_and_security_data(ni, dentry, w);
 578         if (ntfs_inode_close(ni) != 0) {
 579                 ERROR_WITH_ERRNO("Failed to close NTFS inode for root "
 580                                  "directory");
 581                 ret = WIMLIB_ERR_NTFS_3G;
 582         }
 583         return ret;
 584 }
 585
 586 /* Applies a WIM dentry to the NTFS volume */
 587 static int wim_apply_dentry_ntfs(struct dentry *dentry, void *arg)
 588 {
 589         struct ntfs_apply_args *args = arg;
 590         ntfs_volume *vol             = args->vol;
 591         int extract_flags            = args->extract_flags;
 592         WIMStruct *w                 = args->w;
 593         ntfs_inode *dir_ni;
 594         char *p;
 595         char orig;
 596         const char *dir_name;
 597
 598         if (dentry->extracted_file)
 599                 return 0;
 600
 601         wimlib_assert(dentry->full_path_utf8);
 602
 603         DEBUG("Applying dentry `%s' to NTFS", dentry->full_path_utf8);
 604
 605         if (extract_flags & WIMLIB_EXTRACT_FLAG_VERBOSE)
 606                 puts(dentry->full_path_utf8);
 607
 608         if (dentry_is_root(dentry))
 609                 return wim_apply_root_dentry_ntfs(dentry, vol, w);
 610
 611         p = dentry->full_path_utf8 + dentry->full_path_utf8_len;
 612         do {
 613                 p--;
 614         } while (*p != '/');
 615
 616         orig = *p;
 617         *p = '\0';
 618         dir_name = dentry->full_path_utf8;
 619
 620         dir_ni = ntfs_pathname_to_inode(vol, NULL, dir_name);
 621         *p = orig;
 622         if (!dir_ni) {
 623                 ERROR_WITH_ERRNO("Could not find NTFS inode for `%s'",
 624                                  dir_name);
 625                 return WIMLIB_ERR_NTFS_3G;
 626         }
 627         return do_wim_apply_dentry_ntfs(dentry, dir_ni, w);
 628 }
 629
 630 static int wim_apply_dentry_timestamps(struct dentry *dentry, void *arg)
 631 {
 632         struct ntfs_apply_args *args = arg;
 633         ntfs_volume *vol             = args->vol;
 634         u8 *p;
 635         u8 buf[24];
 636         ntfs_inode *ni;
 637         int ret = 0;
 638
 639
 640         DEBUG("Setting timestamps on `%s'", dentry->full_path_utf8);
 641
 642         ni = ntfs_pathname_to_inode(vol, NULL, dentry->full_path_utf8);
 643         if (!ni) {
 644                 ERROR_WITH_ERRNO("Could not find NTFS inode for `%s'",
 645                                  dentry->full_path_utf8);
 646                 return WIMLIB_ERR_NTFS_3G;
 647         }
 648
 649         p = buf;
 650         p = put_u64(p, dentry->creation_time);
 651         p = put_u64(p, dentry->last_write_time);
 652         p = put_u64(p, dentry->last_access_time);
 653         ret = ntfs_inode_set_times(ni, (const char*)buf, 3 * sizeof(u64), 0);
 654         if (ret != 0) {
 655                 ERROR_WITH_ERRNO("Failed to set NTFS timestamps on `%s'",
 656                                  dentry->full_path_utf8);
 657                 ret = WIMLIB_ERR_NTFS_3G;
 658         }
 659
 660         if (ntfs_inode_close(ni) != 0) {
 661                 if (ret == 0)
 662                         ret = WIMLIB_ERR_NTFS_3G;
 663                 ERROR_WITH_ERRNO("Failed to close NTFS inode for `%s'",
 664                                  dentry->full_path_utf8);
 665         }
 666         return ret;
 667 }
 668
 669 static int dentry_clear_extracted_file(struct dentry *dentry, void *ignore)
 670 {
 671         if (dentry->extracted_file != dentry->full_path_utf8)
 672                 FREE(dentry->extracted_file);
 673         dentry->extracted_file = NULL;
 674         return 0;
 675 }
 676
 677 static int do_wim_apply_image_ntfs(WIMStruct *w, const char *device, int extract_flags)
 678 {
 679         ntfs_volume *vol;
 680         int ret;
 681         struct dentry *root;
 682         struct ntfs_apply_args args;
 683
 684         DEBUG("Mounting NTFS volume `%s'", device);
 685         vol = ntfs_mount(device, 0);
 686         if (!vol) {
 687                 ERROR_WITH_ERRNO("Failed to mount NTFS volume `%s'", device);
 688                 return WIMLIB_ERR_NTFS_3G;
 689         }
 690         args.vol = vol;
 691         args.extract_flags = extract_flags;
 692         args.w = w;
 693         root = wim_root_dentry(w);
 694
 695         for_dentry_in_tree(root, dentry_clear_extracted_file, NULL);
 696
 697         ret = for_dentry_in_tree(root, wim_apply_dentry_ntfs, &args);
 698         if (ret != 0)
 699                 goto out;
 700
 701         if (extract_flags & WIMLIB_EXTRACT_FLAG_VERBOSE)
 702                 printf("Setting timestamps of extracted files on NTFS "
 703                        "volume `%s'\n", device);
 704         ret = for_dentry_in_tree_depth(root, wim_apply_dentry_timestamps,
 705                                        &args);
 706
 707         if (ret == 0 && (extract_flags & WIMLIB_EXTRACT_FLAG_VERBOSE))
 708                 printf("Finished applying image %d of %s to NTFS "
 709                        "volume `%s'\n",
 710                        w->current_image,
 711                        w->filename ? w->filename : "WIM",
 712                        device);
 713 out:
 714         DEBUG("Unmounting NTFS volume `%s'", device);
 715         if (ntfs_umount(vol, FALSE) != 0) {
 716                 ERROR_WITH_ERRNO("Failed to unmount NTFS volume `%s'", device);
 717                 if (ret == 0)
 718                         ret = WIMLIB_ERR_NTFS_3G;
 719         }
 720         return ret;
 721 }
 722
 723
 724 /*
 725  * API entry point for applying a WIM image to a NTFS volume.
 726  *
 727  * Please note that this is a NTFS *volume* and not a directory.  The intention
 728  * is that the volume contain an empty filesystem, and the WIM image contain a
 729  * full filesystem to be applied to the volume.
 730  */
 731 WIMLIBAPI int wimlib_apply_image_to_ntfs_volume(WIMStruct *w, int image,
 732                                                 const char *device, int flags,
 733                                                 WIMStruct **additional_swms,
 734                                                 unsigned num_additional_swms)
 735 {
 736         struct lookup_table *joined_tab, *w_tab_save;
 737         int ret;
 738
 739         DEBUG("w->filename = %s, image = %d, device = %s, flags = 0x%x, "
 740               "num_additional_swms = %u",
 741               w->filename, image, device, flags, num_additional_swms);
 742
 743         if (!w || !device)
 744                 return WIMLIB_ERR_INVALID_PARAM;
 745         if (image == WIM_ALL_IMAGES) {
 746                 ERROR("Can only apply a single image when applying "
 747                       "directly to a NTFS volume");
 748                 return WIMLIB_ERR_INVALID_PARAM;
 749         }
 750         if (flags & (WIMLIB_EXTRACT_FLAG_SYMLINK | WIMLIB_EXTRACT_FLAG_HARDLINK)) {
 751                 ERROR("Cannot specify symlink or hardlink flags when applying ");
 752                 ERROR("directly to a NTFS volume");
 753                 return WIMLIB_ERR_INVALID_PARAM;
 754         }
 755
 756         ret = verify_swm_set(w, additional_swms, num_additional_swms);
 757         if (ret != 0)
 758                 return ret;
 759
 760         if (num_additional_swms) {
 761                 ret = new_joined_lookup_table(w, additional_swms,
 762                                               num_additional_swms, &joined_tab);
 763                 if (ret != 0)
 764                         return ret;
 765                 w_tab_save = w->lookup_table;
 766                 w->lookup_table = joined_tab;
 767         }
 768
 769         ret = wimlib_select_image(w, image);
 770         if (ret != 0)
 771                 goto out;
 772
 773         ret = do_wim_apply_image_ntfs(w, device, flags);
 774
 775 out:
 776         if (num_additional_swms) {
 777                 free_lookup_table(w->lookup_table);
 778                 w->lookup_table = w_tab_save;
 779         }
 780         return ret;
 781 }
 782
 783 #else /* WITH_NTFS_3G */
 784 WIMLIBAPI int wimlib_apply_image_to_ntfs_volume(WIMStruct *w, int image,
 785                                                 const char *device, int flags,
 786                                                 WIMStruct **additional_swms,
 787                                                 unsigned num_additional_swms)
 788 {
 789         ERROR("wimlib was compiled without support for NTFS-3g, so");
 790         ERROR("we cannot apply a WIM image directly to a NTFS volume");
 791         return WIMLIB_ERR_UNSUPPORTED;
 792 }
 793 #endif /* WITH_NTFS_3G */