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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
  28 #include "config.h"
  29
  30 #ifdef WITH_NTFS_3G
  31 #include <ntfs-3g/endians.h>
  32 #include <ntfs-3g/types.h>
  33 #endif
  34
  35 #include "wimlib_internal.h"
  36
  37
  38 #ifdef WITH_NTFS_3G
  39 #include "dentry.h"
  40 #include "lookup_table.h"
  41 #include "io.h"
  42 #include <ntfs-3g/layout.h>
  43 #include <ntfs-3g/acls.h>
  44 #include <ntfs-3g/attrib.h>
  45 #include <ntfs-3g/security.h> /* security.h before xattrs.h */
  46 #include <ntfs-3g/xattrs.h>
  47 #include <ntfs-3g/reparse.h>
  48 #include <stdlib.h>
  49 #include <unistd.h>
  50
  51 struct ntfs_apply_args {
  52         ntfs_volume *vol;
  53         int extract_flags;
  54         WIMStruct *w;
  55 };
  56
  57
  58 #if 0
  59 extern int ntfs_set_inode_security(ntfs_inode *ni, u32 selection,
  60                                    const char *attr);
  61 extern int ntfs_set_inode_attributes(ntfs_inode *ni, u32 attrib);
  62 #endif
  63
  64 /*
  65  * Extracts a WIM resource to a NTFS attribute.
  66  */
  67 static int
  68 extract_wim_resource_to_ntfs_attr(const struct lookup_table_entry *lte,
  69                                   ntfs_attr *na)
  70 {
  71         u64 bytes_remaining = wim_resource_size(lte);
  72         u8 buf[min(WIM_CHUNK_SIZE, bytes_remaining)];
  73         u64 offset = 0;
  74         int ret = 0;
  75         u8 hash[SHA1_HASH_SIZE];
  76
  77         SHA_CTX ctx;
  78         sha1_init(&ctx);
  79
  80         while (bytes_remaining) {
  81                 u64 to_read = min(bytes_remaining, WIM_CHUNK_SIZE);
  82                 ret = read_wim_resource(lte, buf, to_read, offset, false);
  83                 if (ret != 0)
  84                         break;
  85                 sha1_update(&ctx, buf, to_read);
  86                 if (ntfs_attr_pwrite(na, offset, to_read, buf) != to_read) {
  87                         ERROR_WITH_ERRNO("Error extracting WIM resource");
  88                         return WIMLIB_ERR_WRITE;
  89                 }
  90                 bytes_remaining -= to_read;
  91                 offset += to_read;
  92         }
  93         sha1_final(hash, &ctx);
  94         if (!hashes_equal(hash, lte->hash)) {
  95                 ERROR("Invalid checksum on a WIM resource "
  96                       "(detected when extracting to NTFS stream)");
  97                 ERROR("The following WIM resource is invalid:");
  98                 print_lookup_table_entry(lte);
  99                 return WIMLIB_ERR_INVALID_RESOURCE_HASH;
 100         }
 101         return 0;
 102 }
 103
 104 /* Writes the data streams to a NTFS file
 105  *
 106  * @ni:      The NTFS inode for the file.
 107  * @inode:   The WIM dentry that has an inode containing the streams.
 108  * @w:       The WIMStruct for the WIM containing the image we are applying.
 109  *
 110  * Returns 0 on success, nonzero on failure.
 111  */
 112 static int write_ntfs_data_streams(ntfs_inode *ni, const struct dentry *dentry,
 113                                    WIMStruct *w)
 114 {
 115         int ret = 0;
 116         unsigned stream_idx = 0;
 117         ntfschar *stream_name = AT_UNNAMED;
 118         u32 stream_name_len = 0;
 119         const struct inode *inode = dentry->inode;
 120
 121         DEBUG("Writing %u NTFS data stream%s for `%s'",
 122               inode->num_ads + 1,
 123               (inode->num_ads == 0 ? "" : "s"),
 124               dentry->full_path_utf8);
 125
 126         while (1) {
 127                 struct lookup_table_entry *lte;
 128                 ntfs_attr *na;
 129
 130                 lte = inode_stream_lte(inode, stream_idx, w->lookup_table);
 131
 132                 if (stream_name_len) {
 133                         /* Create an empty named stream. */
 134                         ret = ntfs_attr_add(ni, AT_DATA, stream_name,
 135                                             stream_name_len, NULL, 0);
 136                         if (ret != 0) {
 137                                 ERROR_WITH_ERRNO("Failed to create name data "
 138                                                  "stream for extracted file "
 139                                                  "`%s'",
 140                                                  dentry->full_path_utf8);
 141                                 ret = WIMLIB_ERR_NTFS_3G;
 142                                 break;
 143
 144                         }
 145                 }
 146                 /* If there's no lookup table entry, it's an empty stream.
 147                  * Otherwise, we must open the attribute and extract the data.
 148                  * */
 149                 if (lte) {
 150                         na = ntfs_attr_open(ni, AT_DATA, stream_name, stream_name_len);
 151                         if (!na) {
 152                                 ERROR_WITH_ERRNO("Failed to open a data stream of "
 153                                                  "extracted file `%s'",
 154                                                  dentry->full_path_utf8);
 155                                 ret = WIMLIB_ERR_NTFS_3G;
 156                                 break;
 157                         }
 158                         ret = extract_wim_resource_to_ntfs_attr(lte, na);
 159                         if (ret != 0)
 160                                 break;
 161                         ntfs_attr_close(na);
 162                 }
 163                 if (stream_idx == inode->num_ads)
 164                         break;
 165                 stream_name = (ntfschar*)inode->ads_entries[stream_idx]->stream_name;
 166                 stream_name_len = inode->ads_entries[stream_idx]->stream_name_len / 2;
 167                 stream_idx++;
 168         }
 169         return ret;
 170 }
 171
 172 /*
 173  * Makes a NTFS hard link
 174  *
 175  * It is named @from_dentry->file_name and is located under the directory
 176  * specified by @dir_ni, and it is made to point to the previously extracted
 177  * file located at @inode->extracted_file.
 178  *
 179  * Return 0 on success, nonzero on failure.
 180  */
 181 static int wim_apply_hardlink_ntfs(const struct dentry *from_dentry,
 182                                    const struct inode *inode,
 183                                    ntfs_inode *dir_ni,
 184                                    ntfs_inode **to_ni_ret)
 185 {
 186         int ret;
 187         char *p;
 188         char orig;
 189         const char *dir_name;
 190
 191         ntfs_inode *to_ni;
 192         ntfs_volume *vol;
 193
 194         wimlib_assert(dentry_is_regular_file(from_dentry)
 195                         && inode_is_regular_file(inode));
 196
 197         if (ntfs_inode_close(dir_ni) != 0) {
 198                 ERROR_WITH_ERRNO("Error closing directory");
 199                 return WIMLIB_ERR_NTFS_3G;
 200         }
 201
 202         vol = dir_ni->vol;
 203
 204         DEBUG("Extracting NTFS hard link `%s' => `%s'",
 205               from_dentry->full_path_utf8, inode->extracted_file);
 206
 207         to_ni = ntfs_pathname_to_inode(vol, NULL, inode->extracted_file);
 208         if (!to_ni) {
 209                 ERROR_WITH_ERRNO("Could not find NTFS inode for `%s'",
 210                                  inode->extracted_file);
 211                 return WIMLIB_ERR_NTFS_3G;
 212         }
 213         p = from_dentry->full_path_utf8 + from_dentry->full_path_utf8_len;
 214         do {
 215                 p--;
 216         } while (*p != '/');
 217
 218         orig = *p;
 219         *p = '\0';
 220         dir_name = from_dentry->full_path_utf8;
 221
 222         dir_ni = ntfs_pathname_to_inode(vol, NULL, dir_name);
 223         if (!dir_ni) {
 224                 ERROR_WITH_ERRNO("Could not find NTFS inode for `%s'",
 225                                  from_dentry->full_path_utf8);
 226                 *p = orig;
 227                 return WIMLIB_ERR_NTFS_3G;
 228         }
 229         *p = orig;
 230
 231         ret = ntfs_link(to_ni, dir_ni,
 232                         (ntfschar*)from_dentry->file_name,
 233                         from_dentry->file_name_len / 2);
 234         if (ret != 0) {
 235                 ERROR_WITH_ERRNO("Could not create hard link `%s' => `%s'",
 236                                  from_dentry->full_path_utf8,
 237                                  inode->extracted_file);
 238                 ret = WIMLIB_ERR_NTFS_3G;
 239         }
 240         *to_ni_ret = to_ni;
 241         return ret;
 242 }
 243
 244 /*#define HAVE_NTFS_INODE_FUNCTIONS*/
 245
 246 static int
 247 apply_file_attributes_and_security_data(ntfs_inode *ni,
 248                                         ntfs_inode *dir_ni,
 249                                         const struct dentry *dentry,
 250                                         const WIMStruct *w)
 251 {
 252         DEBUG("Setting NTFS file attributes on `%s' to %#"PRIx32,
 253               dentry->full_path_utf8, dentry->inode->attributes);
 254         int ret;
 255 #ifdef HAVE_NTFS_INODE_FUNCTIONS
 256         ret = ntfs_set_inode_attributes(ni, dentry->inode->attributes);
 257 #else
 258         struct SECURITY_CONTEXT ctx;
 259         u32 attributes_le32;
 260         attributes_le32 = cpu_to_le32(dentry->inode->attributes);
 261         memset(&ctx, 0, sizeof(ctx));
 262         ctx.vol = ni->vol;
 263         ret = ntfs_xattr_system_setxattr(&ctx, XATTR_NTFS_ATTRIB,
 264                                          ni, dir_ni,
 265                                          (const char*)&attributes_le32,
 266                                          sizeof(u32), 0);
 267 #endif
 268         if (ret != 0) {
 269                 ERROR("Failed to set NTFS file attributes on `%s'",
 270                        dentry->full_path_utf8);
 271                 return WIMLIB_ERR_NTFS_3G;
 272         }
 273         if (dentry->inode->security_id != -1) {
 274                 const struct wim_security_data *sd;
 275                 const char *descriptor;
 276
 277                 sd = wim_const_security_data(w);
 278                 wimlib_assert(dentry->inode->security_id < sd->num_entries);
 279                 descriptor = sd->descriptors[dentry->inode->security_id];
 280                 DEBUG("Applying security descriptor %d to `%s'",
 281                       dentry->inode->security_id, dentry->full_path_utf8);
 282
 283         #ifdef HAVE_NTFS_INODE_FUNCTIONS
 284                 u32 selection = OWNER_SECURITY_INFORMATION |
 285                                 GROUP_SECURITY_INFORMATION |
 286                                 DACL_SECURITY_INFORMATION  |
 287                                 SACL_SECURITY_INFORMATION;
 288                 ret = ntfs_set_inode_security(ni, selection, descriptor);
 289         #else
 290                 ret = ntfs_xattr_system_setxattr(&ctx, XATTR_NTFS_ACL,
 291                                                  ni, dir_ni, descriptor,
 292                                                  sd->sizes[dentry->inode->security_id], 0);
 293         #endif
 294
 295                 if (ret != 0) {
 296                         ERROR_WITH_ERRNO("Failed to set security data on `%s'",
 297                                         dentry->full_path_utf8);
 298                         return WIMLIB_ERR_NTFS_3G;
 299                 }
 300         }
 301         return 0;
 302 }
 303
 304 static int apply_reparse_data(ntfs_inode *ni, const struct dentry *dentry,
 305                               const WIMStruct *w)
 306 {
 307         struct lookup_table_entry *lte;
 308         int ret = 0;
 309
 310         wimlib_assert(dentry->inode->attributes & FILE_ATTRIBUTE_REPARSE_POINT);
 311
 312         lte = inode_unnamed_lte(dentry->inode, w->lookup_table);
 313
 314         DEBUG("Applying reparse data to `%s'", dentry->full_path_utf8);
 315
 316         if (!lte) {
 317                 ERROR("Could not find reparse data for `%s'",
 318                       dentry->full_path_utf8);
 319                 return WIMLIB_ERR_INVALID_DENTRY;
 320         }
 321
 322         if (wim_resource_size(lte) >= 0xffff) {
 323                 ERROR("Reparse data of `%s' is too long (%lu bytes)",
 324                       dentry->full_path_utf8, wim_resource_size(lte));
 325                 return WIMLIB_ERR_INVALID_DENTRY;
 326         }
 327
 328         u8 reparse_data_buf[8 + wim_resource_size(lte)];
 329         u8 *p = reparse_data_buf;
 330         p = put_u32(p, dentry->inode->reparse_tag); /* ReparseTag */
 331         p = put_u16(p, wim_resource_size(lte)); /* ReparseDataLength */
 332         p = put_u16(p, 0); /* Reserved */
 333
 334         ret = read_full_wim_resource(lte, p);
 335         if (ret != 0)
 336                 return ret;
 337
 338         ret = ntfs_set_ntfs_reparse_data(ni, (char*)reparse_data_buf,
 339                                          wim_resource_size(lte) + 8, 0);
 340         if (ret != 0) {
 341                 ERROR_WITH_ERRNO("Failed to set NTFS reparse data on `%s'",
 342                                  dentry->full_path_utf8);
 343                 return WIMLIB_ERR_NTFS_3G;
 344         }
 345         return 0;
 346 }
 347
 348 static int do_wim_apply_dentry_ntfs(struct dentry *dentry, ntfs_inode *dir_ni,
 349                                     WIMStruct *w);
 350
 351 /*
 352  * If @dentry is part of a hard link group, search for hard-linked dentries in
 353  * the same directory that have a nonempty DOS (short) filename.  There should
 354  * be exactly 0 or 1 such dentries.  If there is 1, extract that dentry first,
 355  * so that the DOS name is correctly associated with the corresponding long name
 356  * in the Win32 namespace, and not any of the additional names in the POSIX
 357  * namespace created from hard links.
 358  */
 359 static int preapply_dentry_with_dos_name(struct dentry *dentry,
 360                                          ntfs_inode **dir_ni_p,
 361                                          WIMStruct *w)
 362 {
 363         struct dentry *other;
 364         struct dentry *dentry_with_dos_name;
 365
 366         dentry_with_dos_name = NULL;
 367         inode_for_each_dentry(other, dentry->inode) {
 368                 if (other != dentry && (dentry->parent == other->parent)
 369                     && other->short_name_len)
 370                 {
 371                         if (dentry_with_dos_name) {
 372                                 ERROR("Found multiple DOS names for file `%s' "
 373                                       "in the same directory",
 374                                       dentry_with_dos_name->full_path_utf8);
 375                                 return WIMLIB_ERR_INVALID_DENTRY;
 376                         }
 377                         dentry_with_dos_name = other;
 378                 }
 379         }
 380         /* If there's a dentry with a DOS name, extract it first */
 381         if (dentry_with_dos_name
 382             && !dentry_with_dos_name->inode->extracted_file)
 383         {
 384                 char *p;
 385                 const char *dir_name;
 386                 char orig;
 387                 int ret;
 388                 ntfs_volume *vol = (*dir_ni_p)->vol;
 389
 390                 DEBUG("pre-applying DOS name `%s'",
 391                       dentry_with_dos_name->full_path_utf8);
 392                 ret = do_wim_apply_dentry_ntfs(dentry_with_dos_name,
 393                                                *dir_ni_p, w);
 394                 if (ret != 0)
 395                         return ret;
 396                 p = dentry->full_path_utf8 + dentry->full_path_utf8_len;
 397                 do {
 398                         p--;
 399                 } while (*p != '/');
 400
 401                 orig = *p;
 402                 *p = '\0';
 403                 dir_name = dentry->full_path_utf8;
 404
 405                 *dir_ni_p = ntfs_pathname_to_inode(vol, NULL, dir_name);
 406                 *p = orig;
 407                 if (!*dir_ni_p) {
 408                         ERROR_WITH_ERRNO("Could not find NTFS inode for `%s'",
 409                                          dir_name);
 410                         return WIMLIB_ERR_NTFS_3G;
 411                 }
 412         }
 413         return 0;
 414 }
 415
 416 /*
 417  * Applies a WIM dentry to a NTFS filesystem.
 418  *
 419  * @dentry:  The WIM dentry to apply
 420  * @dir_ni:  The NTFS inode for the parent directory
 421  * @w:       The WIMStruct for the WIM containing the image we are applying.
 422  *
 423  * @return:  0 on success; nonzero on failure.
 424  */
 425 static int do_wim_apply_dentry_ntfs(struct dentry *dentry, ntfs_inode *dir_ni,
 426                                     WIMStruct *w)
 427 {
 428         int ret = 0;
 429         mode_t type;
 430         ntfs_inode *ni = NULL;
 431         bool is_hardlink = false;
 432         ntfs_volume *vol = dir_ni->vol;
 433         struct inode *inode = dentry->inode;
 434
 435         if (inode->attributes & FILE_ATTRIBUTE_DIRECTORY) {
 436                 type = S_IFDIR;
 437         } else {
 438                 struct dentry *other;
 439
 440                 /* Apply hard-linked directory in same directory with DOS name
 441                  * (if there is one) before this dentry */
 442                 if (dentry->short_name_len == 0) {
 443                         ret = preapply_dentry_with_dos_name(dentry,
 444                                                             &dir_ni, w);
 445                         if (ret != 0)
 446                                 return ret;
 447                 }
 448
 449                 type = S_IFREG;
 450
 451                 if (inode->link_count > 1) {
 452                         /* Already extracted another dentry in the hard link
 453                          * group.  We can make a hard link instead of extracting
 454                          * the file data. */
 455                         if (inode->extracted_file) {
 456                                 ret = wim_apply_hardlink_ntfs(dentry, inode,
 457                                                               dir_ni, &ni);
 458                                 is_hardlink = true;
 459                                 if (ret)
 460                                         goto out_close_dir_ni;
 461                                 else
 462                                         goto out_set_dos_name;
 463                         }
 464                         /* Can't make a hard link; extract the file itself */
 465                         FREE(inode->extracted_file);
 466                         inode->extracted_file = STRDUP(dentry->full_path_utf8);
 467                         if (!inode->extracted_file)
 468                                 return WIMLIB_ERR_NOMEM;
 469                 }
 470         }
 471
 472         /*
 473          * Create a directory or file.
 474          *
 475          * Note: For symbolic links that are not directory junctions, pass
 476          * S_IFREG here, since we manually set the reparse data later.
 477          */
 478         ni = ntfs_create(dir_ni, 0, (ntfschar*)dentry->file_name,
 479                          dentry->file_name_len / 2, type);
 480
 481         if (!ni) {
 482                 ERROR_WITH_ERRNO("Could not create NTFS object for `%s'",
 483                                  dentry->full_path_utf8);
 484                 ret = WIMLIB_ERR_NTFS_3G;
 485                 goto out_close_dir_ni;
 486         }
 487
 488         /* Write the data streams, unless this is a directory or reparse point
 489          * */
 490         if (!(inode->attributes & (FILE_ATTRIBUTE_REPARSE_POINT |
 491                                    FILE_ATTRIBUTE_DIRECTORY))) {
 492                 ret = write_ntfs_data_streams(ni, dentry, w);
 493                 if (ret != 0)
 494                         goto out_close_dir_ni;
 495         }
 496
 497
 498         ret = apply_file_attributes_and_security_data(ni, dir_ni, dentry, w);
 499         if (ret != 0)
 500                 goto out_close_dir_ni;
 501
 502         if (inode->attributes & FILE_ATTR_REPARSE_POINT) {
 503                 ret = apply_reparse_data(ni, dentry, w);
 504                 if (ret != 0)
 505                         goto out_close_dir_ni;
 506         }
 507
 508 out_set_dos_name:
 509         /* Set DOS (short) name if given */
 510         if (dentry->short_name_len != 0) {
 511
 512                 char *short_name_utf8;
 513                 size_t short_name_utf8_len;
 514                 short_name_utf8 = utf16_to_utf8(dentry->short_name,
 515                                                 dentry->short_name_len,
 516                                                 &short_name_utf8_len);
 517                 if (!short_name_utf8) {
 518                         ERROR("Out of memory");
 519                         ret = WIMLIB_ERR_NOMEM;
 520                         goto out_close_dir_ni;
 521                 }
 522
 523                 if (is_hardlink) {
 524                         char *p;
 525                         char orig;
 526                         const char *dir_name;
 527
 528                         /* ntfs_set_ntfs_dos_name() closes the inodes in the
 529                          * wrong order if we have applied a hard link.   Close
 530                          * them ourselves, then re-open then. */
 531                         if (ntfs_inode_close(dir_ni) != 0) {
 532                                 if (ret == 0)
 533                                         ret = WIMLIB_ERR_NTFS_3G;
 534                                 ERROR_WITH_ERRNO("Failed to close directory inode");
 535                         }
 536                         if (ntfs_inode_close(ni) != 0) {
 537                                 if (ret == 0)
 538                                         ret = WIMLIB_ERR_NTFS_3G;
 539                                 ERROR_WITH_ERRNO("Failed to close hard link target inode");
 540                         }
 541                         p = dentry->full_path_utf8 + dentry->full_path_utf8_len;
 542                         do {
 543                                 p--;
 544                         } while (*p != '/');
 545
 546                         orig = *p;
 547                         *p = '\0';
 548                         dir_name = dentry->full_path_utf8;
 549
 550                         dir_ni = ntfs_pathname_to_inode(vol, NULL, dir_name);
 551                         *p = orig;
 552                         if (!dir_ni) {
 553                                 ERROR_WITH_ERRNO("Could not find NTFS inode for `%s'",
 554                                                  dir_name);
 555                                 return WIMLIB_ERR_NTFS_3G;
 556                         }
 557                         ni = ntfs_pathname_to_inode(vol, dir_ni,
 558                                                     dentry->file_name_utf8);
 559                         if (!ni) {
 560                                 ERROR_WITH_ERRNO("Could not find NTFS inode for `%s'",
 561                                                  dir_name);
 562                                 return WIMLIB_ERR_NTFS_3G;
 563                         }
 564                 }
 565
 566                 DEBUG("Setting short (DOS) name of `%s' to %s",
 567                       dentry->full_path_utf8, short_name_utf8);
 568
 569                 ret = ntfs_set_ntfs_dos_name(ni, dir_ni, short_name_utf8,
 570                                              short_name_utf8_len, 0);
 571                 FREE(short_name_utf8);
 572                 if (ret != 0) {
 573                         ERROR_WITH_ERRNO("Could not set DOS (short) name for `%s'",
 574                                          dentry->full_path_utf8);
 575                         ret = WIMLIB_ERR_NTFS_3G;
 576                 }
 577                 /* inodes have been closed by ntfs_set_ntfs_dos_name(). */
 578                 return ret;
 579         }
 580
 581 out_close_dir_ni:
 582         if (ntfs_inode_close(dir_ni) != 0) {
 583                 if (ret == 0)
 584                         ret = WIMLIB_ERR_NTFS_3G;
 585                 ERROR_WITH_ERRNO("Failed to close directory inode");
 586         }
 587         if (ni && ntfs_inode_close(ni) != 0) {
 588                 if (ret == 0)
 589                         ret = WIMLIB_ERR_NTFS_3G;
 590                 ERROR_WITH_ERRNO("Failed to close inode");
 591         }
 592         return ret;
 593 }
 594
 595 static int wim_apply_root_dentry_ntfs(const struct dentry *dentry,
 596                                       ntfs_volume *vol,
 597                                       const WIMStruct *w)
 598 {
 599         ntfs_inode *ni;
 600         int ret = 0;
 601
 602         wimlib_assert(dentry_is_directory(dentry));
 603         ni = ntfs_pathname_to_inode(vol, NULL, "/");
 604         if (!ni) {
 605                 ERROR_WITH_ERRNO("Could not find root NTFS inode");
 606                 return WIMLIB_ERR_NTFS_3G;
 607         }
 608         ret = apply_file_attributes_and_security_data(ni, ni, dentry, w);
 609         if (ntfs_inode_close(ni) != 0) {
 610                 ERROR_WITH_ERRNO("Failed to close NTFS inode for root "
 611                                  "directory");
 612                 ret = WIMLIB_ERR_NTFS_3G;
 613         }
 614         return ret;
 615 }
 616
 617 /* Applies a WIM dentry to the NTFS volume */
 618 static int wim_apply_dentry_ntfs(struct dentry *dentry, void *arg)
 619 {
 620         struct ntfs_apply_args *args = arg;
 621         ntfs_volume *vol             = args->vol;
 622         int extract_flags            = args->extract_flags;
 623         WIMStruct *w                 = args->w;
 624         ntfs_inode *dir_ni;
 625         char *p;
 626         char orig;
 627         const char *dir_name;
 628
 629         if (dentry_is_extracted(dentry))
 630                 return 0;
 631
 632         wimlib_assert(dentry->full_path_utf8);
 633
 634         DEBUG("Applying dentry `%s' to NTFS", dentry->full_path_utf8);
 635
 636         if (extract_flags & WIMLIB_EXTRACT_FLAG_VERBOSE)
 637                 puts(dentry->full_path_utf8);
 638
 639         if (dentry_is_root(dentry))
 640                 return wim_apply_root_dentry_ntfs(dentry, vol, w);
 641
 642         p = dentry->full_path_utf8 + dentry->full_path_utf8_len;
 643         do {
 644                 p--;
 645         } while (*p != '/');
 646
 647         orig = *p;
 648         *p = '\0';
 649         dir_name = dentry->full_path_utf8;
 650
 651         dir_ni = ntfs_pathname_to_inode(vol, NULL, dir_name);
 652         *p = orig;
 653         if (!dir_ni) {
 654                 ERROR_WITH_ERRNO("Could not find NTFS inode for `%s'",
 655                                  dir_name);
 656                 return WIMLIB_ERR_NTFS_3G;
 657         }
 658         return do_wim_apply_dentry_ntfs(dentry, dir_ni, w);
 659 }
 660
 661 static int wim_apply_dentry_timestamps(struct dentry *dentry, void *arg)
 662 {
 663         struct ntfs_apply_args *args = arg;
 664         ntfs_volume *vol             = args->vol;
 665         u8 *p;
 666         u8 buf[24];
 667         ntfs_inode *ni;
 668         int ret = 0;
 669
 670
 671         DEBUG("Setting timestamps on `%s'", dentry->full_path_utf8);
 672
 673         ni = ntfs_pathname_to_inode(vol, NULL, dentry->full_path_utf8);
 674         if (!ni) {
 675                 ERROR_WITH_ERRNO("Could not find NTFS inode for `%s'",
 676                                  dentry->full_path_utf8);
 677                 return WIMLIB_ERR_NTFS_3G;
 678         }
 679
 680         p = buf;
 681         p = put_u64(p, dentry->inode->creation_time);
 682         p = put_u64(p, dentry->inode->last_write_time);
 683         p = put_u64(p, dentry->inode->last_access_time);
 684         ret = ntfs_inode_set_times(ni, (const char*)buf, 3 * sizeof(u64), 0);
 685         if (ret != 0) {
 686                 ERROR_WITH_ERRNO("Failed to set NTFS timestamps on `%s'",
 687                                  dentry->full_path_utf8);
 688                 ret = WIMLIB_ERR_NTFS_3G;
 689         }
 690
 691         if (ntfs_inode_close(ni) != 0) {
 692                 if (ret == 0)
 693                         ret = WIMLIB_ERR_NTFS_3G;
 694                 ERROR_WITH_ERRNO("Failed to close NTFS inode for `%s'",
 695                                  dentry->full_path_utf8);
 696         }
 697         return ret;
 698 }
 699
 700 static int dentry_set_unextracted(struct dentry *dentry, void *ignore)
 701 {
 702         dentry->is_extracted = false;
 703         return 0;
 704 }
 705
 706 static int do_wim_apply_image_ntfs(WIMStruct *w, const char *device, int extract_flags)
 707 {
 708         ntfs_volume *vol;
 709         int ret;
 710         struct dentry *root;
 711         struct ntfs_apply_args args;
 712
 713         DEBUG("Mounting NTFS volume `%s'", device);
 714         vol = ntfs_mount(device, 0);
 715         if (!vol) {
 716                 ERROR_WITH_ERRNO("Failed to mount NTFS volume `%s'", device);
 717                 return WIMLIB_ERR_NTFS_3G;
 718         }
 719         args.vol = vol;
 720         args.extract_flags = extract_flags;
 721         args.w = w;
 722         root = wim_root_dentry(w);
 723
 724         for_dentry_in_tree(root, dentry_set_unextracted, NULL);
 725         ret = for_dentry_in_tree(root, wim_apply_dentry_ntfs, &args);
 726         if (ret != 0)
 727                 goto out;
 728
 729         if (extract_flags & WIMLIB_EXTRACT_FLAG_VERBOSE)
 730                 printf("Setting timestamps of extracted files on NTFS "
 731                        "volume `%s'\n", device);
 732         ret = for_dentry_in_tree_depth(root, wim_apply_dentry_timestamps,
 733                                        &args);
 734
 735         if (ret == 0 && (extract_flags & WIMLIB_EXTRACT_FLAG_VERBOSE))
 736                 printf("Finished applying image %d of %s to NTFS "
 737                        "volume `%s'\n",
 738                        w->current_image,
 739                        w->filename ? w->filename : "WIM",
 740                        device);
 741 out:
 742         DEBUG("Unmounting NTFS volume `%s'", device);
 743         if (ntfs_umount(vol, FALSE) != 0) {
 744                 ERROR_WITH_ERRNO("Failed to unmount NTFS volume `%s'", device);
 745                 if (ret == 0)
 746                         ret = WIMLIB_ERR_NTFS_3G;
 747         }
 748         return ret;
 749 }
 750
 751
 752 /*
 753  * API entry point for applying a WIM image to a NTFS volume.
 754  *
 755  * Please note that this is a NTFS *volume* and not a directory.  The intention
 756  * is that the volume contain an empty filesystem, and the WIM image contain a
 757  * full filesystem to be applied to the volume.
 758  */
 759 WIMLIBAPI int wimlib_apply_image_to_ntfs_volume(WIMStruct *w, int image,
 760                                                 const char *device, int flags,
 761                                                 WIMStruct **additional_swms,
 762                                                 unsigned num_additional_swms)
 763 {
 764         struct lookup_table *joined_tab, *w_tab_save;
 765         int ret;
 766
 767         DEBUG("w->filename = %s, image = %d, device = %s, flags = 0x%x, "
 768               "num_additional_swms = %u",
 769               w->filename, image, device, flags, num_additional_swms);
 770
 771         if (!w || !device)
 772                 return WIMLIB_ERR_INVALID_PARAM;
 773         if (image == WIM_ALL_IMAGES) {
 774                 ERROR("Can only apply a single image when applying "
 775                       "directly to a NTFS volume");
 776                 return WIMLIB_ERR_INVALID_PARAM;
 777         }
 778         if (flags & (WIMLIB_EXTRACT_FLAG_SYMLINK | WIMLIB_EXTRACT_FLAG_HARDLINK)) {
 779                 ERROR("Cannot specify symlink or hardlink flags when applying ");
 780                 ERROR("directly to a NTFS volume");
 781                 return WIMLIB_ERR_INVALID_PARAM;
 782         }
 783
 784         ret = verify_swm_set(w, additional_swms, num_additional_swms);
 785         if (ret != 0)
 786                 return ret;
 787
 788         if (num_additional_swms) {
 789                 ret = new_joined_lookup_table(w, additional_swms,
 790                                               num_additional_swms, &joined_tab);
 791                 if (ret != 0)
 792                         return ret;
 793                 w_tab_save = w->lookup_table;
 794                 w->lookup_table = joined_tab;
 795         }
 796
 797         ret = wimlib_select_image(w, image);
 798         if (ret != 0)
 799                 goto out;
 800
 801         ret = do_wim_apply_image_ntfs(w, device, flags);
 802
 803 out:
 804         if (num_additional_swms) {
 805                 free_lookup_table(w->lookup_table);
 806                 w->lookup_table = w_tab_save;
 807         }
 808         return ret;
 809 }
 810
 811 #else /* WITH_NTFS_3G */
 812 WIMLIBAPI int wimlib_apply_image_to_ntfs_volume(WIMStruct *w, int image,
 813                                                 const char *device, int flags,
 814                                                 WIMStruct **additional_swms,
 815                                                 unsigned num_additional_swms)
 816 {
 817         ERROR("wimlib was compiled without support for NTFS-3g, so");
 818         ERROR("we cannot apply a WIM image directly to a NTFS volume");
 819         return WIMLIB_ERR_UNSUPPORTED;
 820 }
 821 #endif /* WITH_NTFS_3G */