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   1 /*
   2  * wim.c - Stuff that doesn't fit into any other file
   3  */
   4
   5 /*
   6  * Copyright (C) 2012, 2013 Eric Biggers
   7  *
   8  * wimlib - Library for working with WIM files
   9  *
  10  * This file is part of wimlib, a library for working with WIM files.
  11  *
  12  * wimlib is free software; you can redistribute it and/or modify it under the
  13  * terms of the GNU General Public License as published by the Free
  14  * Software Foundation; either version 3 of the License, or (at your option)
  15  * any later version.
  16  *
  17  * wimlib is distributed in the hope that it will be useful, but WITHOUT ANY
  18  * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
  19  * A PARTICULAR PURPOSE. See the GNU General Public License for more
  20  * details.
  21  *
  22  * You should have received a copy of the GNU General Public License
  23  * along with wimlib; if not, see http://www.gnu.org/licenses/.
  24  */
  25
  26 #include "config.h"
  27
  28 #include <errno.h>
  29 #include <fcntl.h>
  30 #include <limits.h>
  31 #include <stdarg.h>
  32 #include <stdlib.h>
  33 #include <unistd.h>
  34
  35 #ifdef WITH_NTFS_3G
  36 #  include <time.h>
  37 #  include <ntfs-3g/volume.h>
  38 #endif
  39
  40 #ifdef __WIN32__
  41 #  include "win32.h"
  42 #endif
  43
  44 #include "buffer_io.h"
  45 #include "dentry.h"
  46 #include "lookup_table.h"
  47 #include "wimlib_internal.h"
  48 #include "xml.h"
  49
  50 static int image_print_metadata(WIMStruct *w)
  51 {
  52         DEBUG("Printing metadata for image %d", w->current_image);
  53         print_security_data(wim_security_data(w));
  54         return for_dentry_in_tree(wim_root_dentry(w), print_dentry,
  55                                   w->lookup_table);
  56 }
  57
  58
  59 static int image_print_files(WIMStruct *w)
  60 {
  61         return for_dentry_in_tree(wim_root_dentry(w), print_dentry_full_path,
  62                                   NULL);
  63 }
  64
  65 static WIMStruct *new_wim_struct()
  66 {
  67         WIMStruct *w = CALLOC(1, sizeof(WIMStruct));
  68 #ifdef WITH_FUSE
  69         if (pthread_mutex_init(&w->fp_tab_mutex, NULL) != 0) {
  70                 ERROR_WITH_ERRNO("Failed to initialize mutex");
  71                 FREE(w);
  72                 w = NULL;
  73         }
  74 #endif
  75         return w;
  76
  77 }
  78
  79 /*
  80  * Calls a function on images in the WIM.  If @image is WIMLIB_ALL_IMAGES, @visitor
  81  * is called on the WIM once for each image, with each image selected as the
  82  * current image in turn.  If @image is a certain image, @visitor is called on
  83  * the WIM only once, with that image selected.
  84  */
  85 int for_image(WIMStruct *w, int image, int (*visitor)(WIMStruct *))
  86 {
  87         int ret;
  88         int start;
  89         int end;
  90         int i;
  91
  92         if (image == WIMLIB_ALL_IMAGES) {
  93                 start = 1;
  94                 end = w->hdr.image_count;
  95         } else if (image >= 1 && image <= w->hdr.image_count) {
  96                 start = image;
  97                 end = image;
  98         } else {
  99                 return WIMLIB_ERR_INVALID_IMAGE;
 100         }
 101         for (i = start; i <= end; i++) {
 102                 ret = select_wim_image(w, i);
 103                 if (ret != 0)
 104                         return ret;
 105                 ret = visitor(w);
 106                 if (ret != 0)
 107                         return ret;
 108         }
 109         return 0;
 110 }
 111
 112 static int sort_image_metadata_by_position(const void *p1, const void *p2)
 113 {
 114         const struct wim_image_metadata *imd1 = p1;
 115         const struct wim_image_metadata *imd2 = p2;
 116         u64 offset1 = imd1->metadata_lte->resource_entry.offset;
 117         u64 offset2 = imd2->metadata_lte->resource_entry.offset;
 118         if (offset1 < offset2)
 119                 return -1;
 120         else if (offset1 > offset2)
 121                 return 1;
 122         else
 123                 return 0;
 124 }
 125
 126 /*
 127  * If @lte points to a metadata resource, append it to the list of metadata
 128  * resources in the WIMStruct.  Otherwise, do nothing.
 129  */
 130 static int append_metadata_resource_entry(struct wim_lookup_table_entry *lte,
 131                                           void *wim_p)
 132 {
 133         WIMStruct *w = wim_p;
 134         int ret = 0;
 135
 136         if (lte->resource_entry.flags & WIM_RESHDR_FLAG_METADATA) {
 137                 if (w->current_image == w->hdr.image_count) {
 138                         ERROR("The WIM header says there are %u images in the WIM,\n"
 139                               "        but we found more metadata resources than this",
 140                               w->hdr.image_count);
 141                         ret = WIMLIB_ERR_IMAGE_COUNT;
 142                 } else {
 143                         DEBUG("Found metadata resource for image %u at "
 144                               "offset %"PRIu64".",
 145                               w->current_image + 1,
 146                               lte->resource_entry.offset);
 147                         w->image_metadata[
 148                                 w->current_image++].metadata_lte = lte;
 149                 }
 150         }
 151         return ret;
 152 }
 153
 154 /* Returns the compression type given in the flags of a WIM header. */
 155 static int wim_hdr_flags_compression_type(int wim_hdr_flags)
 156 {
 157         if (wim_hdr_flags & WIM_HDR_FLAG_COMPRESSION) {
 158                 if (wim_hdr_flags & WIM_HDR_FLAG_COMPRESS_LZX)
 159                         return WIMLIB_COMPRESSION_TYPE_LZX;
 160                 else if (wim_hdr_flags & WIM_HDR_FLAG_COMPRESS_XPRESS)
 161                         return WIMLIB_COMPRESSION_TYPE_XPRESS;
 162                 else
 163                         return WIMLIB_COMPRESSION_TYPE_INVALID;
 164         } else {
 165                 return WIMLIB_COMPRESSION_TYPE_NONE;
 166         }
 167 }
 168
 169 /*
 170  * Creates a WIMStruct for a new WIM file.
 171  */
 172 WIMLIBAPI int wimlib_create_new_wim(int ctype, WIMStruct **w_ret)
 173 {
 174         WIMStruct *w;
 175         struct wim_lookup_table *table;
 176         int ret;
 177
 178         DEBUG("Creating new WIM with %s compression.",
 179               wimlib_get_compression_type_string(ctype));
 180
 181         /* Allocate the WIMStruct. */
 182         w = new_wim_struct();
 183         if (!w)
 184                 return WIMLIB_ERR_NOMEM;
 185
 186         ret = init_header(&w->hdr, ctype);
 187         if (ret != 0)
 188                 goto out_free;
 189
 190         table = new_lookup_table(9001);
 191         if (!table) {
 192                 ret = WIMLIB_ERR_NOMEM;
 193                 goto out_free;
 194         }
 195         w->lookup_table = table;
 196         *w_ret = w;
 197         return 0;
 198 out_free:
 199         FREE(w);
 200         return ret;
 201 }
 202
 203 WIMLIBAPI int wimlib_get_num_images(const WIMStruct *w)
 204 {
 205         return w->hdr.image_count;
 206 }
 207
 208 int select_wim_image(WIMStruct *w, int image)
 209 {
 210         struct wim_image_metadata *imd;
 211         int ret;
 212
 213         DEBUG("Selecting image %d", image);
 214
 215         if (image == WIMLIB_NO_IMAGE) {
 216                 ERROR("Invalid image: %d", WIMLIB_NO_IMAGE);
 217                 return WIMLIB_ERR_INVALID_IMAGE;
 218         }
 219
 220         if (image == w->current_image)
 221                 return 0;
 222
 223         if (image < 1 || image > w->hdr.image_count) {
 224                 ERROR("Cannot select image %d: There are only %u images",
 225                       image, w->hdr.image_count);
 226                 return WIMLIB_ERR_INVALID_IMAGE;
 227         }
 228
 229         /* If a valid image is currently selected, it can be freed if it is not
 230          * modified.  */
 231         if (w->current_image != WIMLIB_NO_IMAGE) {
 232                 imd = wim_get_current_image_metadata(w);
 233                 if (!imd->modified) {
 234                         DEBUG("Freeing image %u", w->current_image);
 235                         destroy_image_metadata(imd, NULL);
 236                         imd->root_dentry = NULL;
 237                         imd->security_data = NULL;
 238                         INIT_HLIST_HEAD(&imd->inode_list);
 239                 }
 240         }
 241         w->current_image = image;
 242         imd = &w->image_metadata[image - 1];
 243         if (imd->root_dentry) {
 244                 ret = 0;
 245         } else {
 246                 #ifdef ENABLE_DEBUG
 247                 DEBUG("Reading metadata resource specified by the following "
 248                       "lookup table entry:");
 249                 print_lookup_table_entry(imd->metadata_lte, stdout);
 250                 #endif
 251                 ret = read_metadata_resource(w, imd);
 252                 if (ret)
 253                         w->current_image = WIMLIB_NO_IMAGE;
 254         }
 255         return ret;
 256 }
 257
 258
 259 /* Returns the compression type of the WIM file. */
 260 WIMLIBAPI int wimlib_get_compression_type(const WIMStruct *w)
 261 {
 262         return wim_hdr_flags_compression_type(w->hdr.flags);
 263 }
 264
 265 WIMLIBAPI const char *wimlib_get_compression_type_string(int ctype)
 266 {
 267         switch (ctype) {
 268                 case WIMLIB_COMPRESSION_TYPE_NONE:
 269                         return "None";
 270                 case WIMLIB_COMPRESSION_TYPE_LZX:
 271                         return "LZX";
 272                 case WIMLIB_COMPRESSION_TYPE_XPRESS:
 273                         return "XPRESS";
 274                 default:
 275                         return "Invalid";
 276         }
 277 }
 278
 279 /*
 280  * Returns the number of an image in the WIM file, given a string that is either
 281  * the number of the image, or the name of the image.  The images are numbered
 282  * starting at 1.
 283  */
 284 WIMLIBAPI int wimlib_resolve_image(WIMStruct *w, const char *image_name_or_num)
 285 {
 286         char *p;
 287         int image;
 288         int i;
 289
 290         if (!image_name_or_num || !*image_name_or_num)
 291                 return WIMLIB_NO_IMAGE;
 292
 293         if (strcmp(image_name_or_num, "all") == 0
 294             || strcmp(image_name_or_num, "*") == 0)
 295                 return WIMLIB_ALL_IMAGES;
 296         image = strtol(image_name_or_num, &p, 10);
 297         if (p != image_name_or_num && *p == '\0' && image > 0) {
 298                 if (image > w->hdr.image_count)
 299                         return WIMLIB_NO_IMAGE;
 300                 return image;
 301         } else {
 302                 for (i = 1; i <= w->hdr.image_count; i++) {
 303                         if (strcmp(image_name_or_num,
 304                                    wimlib_get_image_name(w, i)) == 0)
 305                                 return i;
 306                 }
 307                 return WIMLIB_NO_IMAGE;
 308         }
 309 }
 310
 311
 312 /* Prints some basic information about a WIM file. */
 313 WIMLIBAPI void wimlib_print_wim_information(const WIMStruct *w)
 314 {
 315         const struct wim_header *hdr;
 316
 317         hdr = &w->hdr;
 318         puts("WIM Information:");
 319         puts("----------------");
 320         printf("Path:           %s\n", w->filename);
 321         fputs ("GUID:           0x", stdout);
 322         print_byte_field(hdr->guid, WIM_GID_LEN);
 323         putchar('\n');
 324         printf("Image Count:    %d\n", hdr->image_count);
 325         printf("Compression:    %s\n", wimlib_get_compression_type_string(
 326                                                 wimlib_get_compression_type(w)));
 327         printf("Part Number:    %d/%d\n", hdr->part_number, hdr->total_parts);
 328         printf("Boot Index:     %d\n", hdr->boot_idx);
 329         printf("Size:           %"PRIu64" bytes\n",
 330                                 wim_info_get_total_bytes(w->wim_info));
 331         printf("Integrity Info: %s\n", (w->hdr.integrity.offset != 0) ? "yes" : "no");
 332         putchar('\n');
 333 }
 334
 335 WIMLIBAPI bool wimlib_has_integrity_table(const WIMStruct *w)
 336 {
 337         return w->hdr.integrity.size != 0;
 338 }
 339
 340 WIMLIBAPI void wimlib_print_available_images(const WIMStruct *w, int image)
 341 {
 342         int first;
 343         int last;
 344         int i;
 345         int n;
 346         if (image == WIMLIB_ALL_IMAGES) {
 347                 n = printf("Available Images:\n");
 348                 first = 1;
 349                 last = w->hdr.image_count;
 350         } else if (image >= 1 && image <= w->hdr.image_count) {
 351                 n = printf("Information for Image %d\n", image);
 352                 first = image;
 353                 last = image;
 354         } else {
 355                 printf("wimlib_print_available_images(): Invalid image %d",
 356                        image);
 357                 return;
 358         }
 359         for (i = 0; i < n - 1; i++)
 360                 putchar('-');
 361         putchar('\n');
 362         for (i = first; i <= last; i++)
 363                 print_image_info(w->wim_info, i);
 364 }
 365
 366
 367 /* Prints the metadata for the specified image, which may be WIMLIB_ALL_IMAGES, but
 368  * not WIMLIB_NO_IMAGE. */
 369 WIMLIBAPI int wimlib_print_metadata(WIMStruct *w, int image)
 370 {
 371         if (w->hdr.part_number != 1) {
 372                 ERROR("Cannot show the metadata from part %hu of a %hu-part split WIM!",
 373                        w->hdr.part_number, w->hdr.total_parts);
 374                 ERROR("Select the first part of the split WIM to see the metadata.");
 375                 return WIMLIB_ERR_SPLIT_UNSUPPORTED;
 376         }
 377         return for_image(w, image, image_print_metadata);
 378 }
 379
 380 WIMLIBAPI int wimlib_print_files(WIMStruct *w, int image)
 381 {
 382         if (w->hdr.part_number != 1) {
 383                 ERROR("Cannot list the files from part %hu of a %hu-part split WIM!",
 384                        w->hdr.part_number, w->hdr.total_parts);
 385                 ERROR("Select the first part of the split WIM if you'd like to list the files.");
 386                 return WIMLIB_ERR_SPLIT_UNSUPPORTED;
 387         }
 388         return for_image(w, image, image_print_files);
 389 }
 390
 391 /* Sets the index of the bootable image. */
 392 WIMLIBAPI int wimlib_set_boot_idx(WIMStruct *w, int boot_idx)
 393 {
 394         if (w->hdr.total_parts != 1) {
 395                 ERROR("Cannot modify the boot index of a split WIM!");
 396                 return WIMLIB_ERR_SPLIT_UNSUPPORTED;
 397         }
 398         if (boot_idx < 0 || boot_idx > w->hdr.image_count)
 399                 return WIMLIB_ERR_INVALID_IMAGE;
 400         w->hdr.boot_idx = boot_idx;
 401
 402         if (boot_idx == 0) {
 403                 memset(&w->hdr.boot_metadata_res_entry, 0,
 404                        sizeof(struct resource_entry));
 405         } else {
 406                 memcpy(&w->hdr.boot_metadata_res_entry,
 407                        &w->image_metadata[
 408                           boot_idx - 1].metadata_lte->resource_entry,
 409                        sizeof(struct resource_entry));
 410         }
 411
 412         return 0;
 413 }
 414
 415 WIMLIBAPI int wimlib_get_part_number(const WIMStruct *w, int *total_parts_ret)
 416 {
 417         if (total_parts_ret)
 418                 *total_parts_ret = w->hdr.total_parts;
 419         return w->hdr.part_number;
 420 }
 421
 422
 423 WIMLIBAPI int wimlib_get_boot_idx(const WIMStruct *w)
 424 {
 425         return w->hdr.boot_idx;
 426 }
 427
 428 /*
 429  * Begins the reading of a WIM file; opens the file and reads its header and
 430  * lookup table, and optionally checks the integrity.
 431  */
 432 static int begin_read(WIMStruct *w, const char *in_wim_path, int open_flags,
 433                       wimlib_progress_func_t progress_func)
 434 {
 435         int ret;
 436         int xml_num_images;
 437
 438         DEBUG("Reading the WIM file `%s'", in_wim_path);
 439
 440         w->fp = fopen(in_wim_path, "rb");
 441         if (!w->fp) {
 442                 ERROR_WITH_ERRNO("Failed to open `%s' for reading",
 443                                  in_wim_path);
 444                 return WIMLIB_ERR_OPEN;
 445         }
 446
 447         /* The absolute path to the WIM is requested so that wimlib_overwrite()
 448          * still works even if the process changes its working directory.  This
 449          * actually happens if a WIM is mounted read-write, since the FUSE
 450          * thread changes directory to "/", and it needs to be able to find the
 451          * WIM file again.
 452          *
 453          * This will break if the full path to the WIM changes in the
 454          * intervening time...
 455          */
 456         w->filename = realpath(in_wim_path, NULL);
 457         if (!w->filename) {
 458                 ERROR_WITH_ERRNO("Failed to resolve WIM filename");
 459                 if (errno == ENOMEM)
 460                         return WIMLIB_ERR_NOMEM;
 461                 else
 462                         return WIMLIB_ERR_OPEN;
 463         }
 464
 465         ret = read_header(w->fp, &w->hdr, open_flags);
 466         if (ret != 0)
 467                 return ret;
 468
 469         DEBUG("According to header, WIM contains %u images", w->hdr.image_count);
 470
 471         /* If the boot index is invalid, print a warning and set it to 0 */
 472         if (w->hdr.boot_idx > w->hdr.image_count) {
 473                 WARNING("In `%s', image %u is marked as bootable, "
 474                         "but there are only %u images in the WIM",
 475                         in_wim_path, w->hdr.boot_idx, w->hdr.image_count);
 476                 w->hdr.boot_idx = 0;
 477         }
 478
 479         if (wimlib_get_compression_type(w) == WIMLIB_COMPRESSION_TYPE_INVALID) {
 480                 ERROR("Invalid compression type (WIM header flags = 0x%x)",
 481                       w->hdr.flags);
 482                 return WIMLIB_ERR_INVALID_COMPRESSION_TYPE;
 483         }
 484
 485         if (open_flags & WIMLIB_OPEN_FLAG_CHECK_INTEGRITY) {
 486                 ret = check_wim_integrity(w, progress_func);
 487                 if (ret == WIM_INTEGRITY_NONEXISTENT) {
 488                         WARNING("No integrity information for `%s'; skipping "
 489                                 "integrity check.", in_wim_path);
 490                 } else if (ret == WIM_INTEGRITY_NOT_OK) {
 491                         ERROR("WIM is not intact! (Failed integrity check)");
 492                         return WIMLIB_ERR_INTEGRITY;
 493                 } else if (ret != WIM_INTEGRITY_OK) {
 494                         return ret;
 495                 }
 496         }
 497
 498         ret = read_lookup_table(w);
 499         if (ret != 0)
 500                 return ret;
 501
 502         if (w->hdr.image_count != 0) {
 503                 w->image_metadata = CALLOC(w->hdr.image_count,
 504                                            sizeof(struct wim_image_metadata));
 505
 506                 if (!w->image_metadata) {
 507                         ERROR("Failed to allocate memory for %u image metadata structures",
 508                               w->hdr.image_count);
 509                         return WIMLIB_ERR_NOMEM;
 510                 }
 511         }
 512         w->current_image = 0;
 513
 514         DEBUG("Looking for metadata resources in the lookup table.");
 515
 516         /* Find the images in the WIM by searching the lookup table. */
 517         ret = for_lookup_table_entry(w->lookup_table,
 518                                      append_metadata_resource_entry, w);
 519
 520         if (ret != 0)
 521                 return ret;
 522
 523         /* Make sure all the expected images were found.  (We already have
 524          * returned WIMLIB_ERR_IMAGE_COUNT if *extra* images were found) */
 525         if (w->current_image != w->hdr.image_count &&
 526             w->hdr.part_number == 1)
 527         {
 528                 ERROR("Only found %d images in WIM, but expected %u",
 529                       w->current_image, w->hdr.image_count);
 530                 return WIMLIB_ERR_IMAGE_COUNT;
 531         }
 532
 533         /* Sort images by the position of their metadata resources.  I'm
 534          * assuming that is what determines the other of the images in the WIM
 535          * file, rather than their order in the lookup table, which is random
 536          * because of hashing. */
 537         qsort(w->image_metadata, w->current_image,
 538               sizeof(struct wim_image_metadata), sort_image_metadata_by_position);
 539
 540         w->current_image = WIMLIB_NO_IMAGE;
 541
 542         /* Read the XML data. */
 543         ret = read_xml_data(w->fp, &w->hdr.xml_res_entry,
 544                             &w->xml_data, &w->wim_info);
 545
 546         if (ret != 0)
 547                 return ret;
 548
 549         xml_num_images = wim_info_get_num_images(w->wim_info);
 550         if (xml_num_images != w->hdr.image_count) {
 551                 ERROR("In the file `%s', there are %u <IMAGE> elements "
 552                       "in the XML data,", in_wim_path, xml_num_images);
 553                 ERROR("but %u images in the WIM!  There must be exactly one "
 554                       "<IMAGE> element per image.", w->hdr.image_count);
 555                 return WIMLIB_ERR_IMAGE_COUNT;
 556         }
 557
 558         DEBUG("Done beginning read of WIM file `%s'.", in_wim_path);
 559         return 0;
 560 }
 561
 562
 563 /*
 564  * Opens a WIM file and creates a WIMStruct for it.
 565  */
 566 WIMLIBAPI int wimlib_open_wim(const char *wim_file, int open_flags,
 567                               WIMStruct **w_ret,
 568                               wimlib_progress_func_t progress_func)
 569 {
 570         WIMStruct *w;
 571         int ret;
 572
 573         if (!wim_file || !w_ret)
 574                 return WIMLIB_ERR_INVALID_PARAM;
 575
 576         w = new_wim_struct();
 577         if (!w)
 578                 return WIMLIB_ERR_NOMEM;
 579
 580         ret = begin_read(w, wim_file, open_flags, progress_func);
 581         if (ret == 0)
 582                 *w_ret = w;
 583         else
 584                 wimlib_free(w);
 585         return ret;
 586 }
 587
 588 void destroy_image_metadata(struct wim_image_metadata *imd,
 589                             struct wim_lookup_table *table)
 590 {
 591         free_dentry_tree(imd->root_dentry, table);
 592         free_security_data(imd->security_data);
 593
 594         /* Get rid of the lookup table entry for this image's metadata resource
 595          * */
 596         if (table) {
 597                 lookup_table_unlink(table, imd->metadata_lte);
 598                 free_lookup_table_entry(imd->metadata_lte);
 599         }
 600 }
 601
 602 /* Frees the memory for the WIMStruct, including all internal memory; also
 603  * closes all files associated with the WIMStruct.  */
 604 WIMLIBAPI void wimlib_free(WIMStruct *w)
 605 {
 606         DEBUG("Freeing WIMStruct");
 607
 608         if (!w)
 609                 return;
 610         if (w->fp)
 611                 fclose(w->fp);
 612         if (w->out_fp)
 613                 fclose(w->out_fp);
 614
 615 #ifdef WITH_FUSE
 616         if (w->fp_tab) {
 617                 for (size_t i = 0; i < w->num_allocated_fps; i++)
 618                         if (w->fp_tab[i])
 619                                 fclose(w->fp_tab[i]);
 620                 FREE(w->fp_tab);
 621         }
 622         pthread_mutex_destroy(&w->fp_tab_mutex);
 623 #endif
 624
 625         free_lookup_table(w->lookup_table);
 626
 627         FREE(w->filename);
 628         FREE(w->xml_data);
 629         free_wim_info(w->wim_info);
 630         if (w->image_metadata) {
 631                 for (unsigned i = 0; i < w->hdr.image_count; i++)
 632                         destroy_image_metadata(&w->image_metadata[i], NULL);
 633                 FREE(w->image_metadata);
 634         }
 635 #ifdef WITH_NTFS_3G
 636         if (w->ntfs_vol) {
 637                 DEBUG("Unmounting NTFS volume");
 638                 ntfs_umount(w->ntfs_vol, FALSE);
 639         }
 640 #endif
 641         FREE(w);
 642         DEBUG("Freed WIMStruct");
 643 }
 644
 645 /* Get global memory allocations out of the way.  Not strictly necessary in
 646  * single-threaded programs like 'imagex'. */
 647 WIMLIBAPI int wimlib_global_init()
 648 {
 649         libxml_global_init();
 650         return iconv_global_init();
 651 }
 652
 653 /* Free global memory allocations.  Not strictly necessary if the process using
 654  * wimlib is just about to exit (as is the case for 'imagex'). */
 655 WIMLIBAPI void wimlib_global_cleanup()
 656 {
 657         libxml_global_cleanup();
 658         iconv_global_cleanup();
 659 }