342281d382fed08bf7ed461bcf2c611fb90a912c
[wimlib] / src / wim.c
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 __WIN32__
36 #  include "win32.h"
37 #else
38 #  include <langinfo.h>
39 #endif
40
41 #include "buffer_io.h"
42 #include "dentry.h"
43 #include "lookup_table.h"
44 #include "wimlib_internal.h"
45 #include "xml.h"
46
47 static int
48 image_print_metadata(WIMStruct *w)
49 {
50         DEBUG("Printing metadata for image %d", w->current_image);
51         print_security_data(wim_security_data(w));
52         return for_dentry_in_tree(wim_root_dentry(w), print_dentry,
53                                   w->lookup_table);
54 }
55
56
57 static int
58 image_print_files(WIMStruct *w)
59 {
60         return for_dentry_in_tree(wim_root_dentry(w), print_dentry_full_path,
61                                   NULL);
62 }
63
64 static WIMStruct *
65 new_wim_struct()
66 {
67         WIMStruct *w = CALLOC(1, sizeof(WIMStruct));
68 #if defined(WITH_FUSE) || defined(ENABLE_MULTITHREADED_COMPRESSION)
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
86 for_image(WIMStruct *w, int image, int (*visitor)(WIMStruct *))
87 {
88         int ret;
89         int start;
90         int end;
91         int i;
92
93         if (image == WIMLIB_ALL_IMAGES) {
94                 start = 1;
95                 end = w->hdr.image_count;
96         } else if (image >= 1 && image <= w->hdr.image_count) {
97                 start = image;
98                 end = image;
99         } else {
100                 return WIMLIB_ERR_INVALID_IMAGE;
101         }
102         for (i = start; i <= end; i++) {
103                 ret = select_wim_image(w, i);
104                 if (ret != 0)
105                         return ret;
106                 ret = visitor(w);
107                 if (ret != 0)
108                         return ret;
109         }
110         return 0;
111 }
112
113 /* Returns the compression type given in the flags of a WIM header. */
114 static int
115 wim_hdr_flags_compression_type(int wim_hdr_flags)
116 {
117         if (wim_hdr_flags & WIM_HDR_FLAG_COMPRESSION) {
118                 if (wim_hdr_flags & WIM_HDR_FLAG_COMPRESS_LZX)
119                         return WIMLIB_COMPRESSION_TYPE_LZX;
120                 else if (wim_hdr_flags & WIM_HDR_FLAG_COMPRESS_XPRESS)
121                         return WIMLIB_COMPRESSION_TYPE_XPRESS;
122                 else
123                         return WIMLIB_COMPRESSION_TYPE_INVALID;
124         } else {
125                 return WIMLIB_COMPRESSION_TYPE_NONE;
126         }
127 }
128
129 /*
130  * Creates a WIMStruct for a new WIM file.
131  */
132 WIMLIBAPI int
133 wimlib_create_new_wim(int ctype, WIMStruct **w_ret)
134 {
135         WIMStruct *w;
136         struct wim_lookup_table *table;
137         int ret;
138
139         DEBUG("Creating new WIM with %"TS" compression.",
140               wimlib_get_compression_type_string(ctype));
141
142         /* Allocate the WIMStruct. */
143         w = new_wim_struct();
144         if (!w)
145                 return WIMLIB_ERR_NOMEM;
146
147         ret = init_header(&w->hdr, ctype);
148         if (ret != 0)
149                 goto out_free;
150
151         table = new_lookup_table(9001);
152         if (!table) {
153                 ret = WIMLIB_ERR_NOMEM;
154                 goto out_free;
155         }
156         w->lookup_table = table;
157         *w_ret = w;
158         return 0;
159 out_free:
160         FREE(w);
161         return ret;
162 }
163
164 WIMLIBAPI int
165 wimlib_get_num_images(const WIMStruct *w)
166 {
167         return w->hdr.image_count;
168 }
169
170 int
171 select_wim_image(WIMStruct *w, int image)
172 {
173         struct wim_image_metadata *imd;
174         int ret;
175
176         DEBUG("Selecting image %d", image);
177
178         if (image == WIMLIB_NO_IMAGE) {
179                 ERROR("Invalid image: %d", WIMLIB_NO_IMAGE);
180                 return WIMLIB_ERR_INVALID_IMAGE;
181         }
182
183         if (image == w->current_image)
184                 return 0;
185
186         if (image < 1 || image > w->hdr.image_count) {
187                 ERROR("Cannot select image %d: There are only %u images",
188                       image, w->hdr.image_count);
189                 return WIMLIB_ERR_INVALID_IMAGE;
190         }
191
192         /* If a valid image is currently selected, it can be freed if it is not
193          * modified.  */
194         if (w->current_image != WIMLIB_NO_IMAGE) {
195                 imd = wim_get_current_image_metadata(w);
196                 if (!imd->modified) {
197                         wimlib_assert(list_empty(&imd->unhashed_streams));
198                         DEBUG("Freeing image %u", w->current_image);
199                         destroy_image_metadata(imd, NULL, false);
200                 }
201         }
202         w->current_image = image;
203         imd = wim_get_current_image_metadata(w);
204         if (imd->root_dentry) {
205                 ret = 0;
206         } else {
207                 #ifdef ENABLE_DEBUG
208                 DEBUG("Reading metadata resource specified by the following "
209                       "lookup table entry:");
210                 print_lookup_table_entry(imd->metadata_lte, stderr);
211                 #endif
212                 ret = read_metadata_resource(w, imd);
213                 if (ret)
214                         w->current_image = WIMLIB_NO_IMAGE;
215         }
216         return ret;
217 }
218
219
220 /* Returns the compression type of the WIM file. */
221 WIMLIBAPI int
222 wimlib_get_compression_type(const WIMStruct *w)
223 {
224         return wim_hdr_flags_compression_type(w->hdr.flags);
225 }
226
227 WIMLIBAPI const tchar *
228 wimlib_get_compression_type_string(int ctype)
229 {
230         switch (ctype) {
231                 case WIMLIB_COMPRESSION_TYPE_NONE:
232                         return T("None");
233                 case WIMLIB_COMPRESSION_TYPE_LZX:
234                         return T("LZX");
235                 case WIMLIB_COMPRESSION_TYPE_XPRESS:
236                         return T("XPRESS");
237                 default:
238                         return T("Invalid");
239         }
240 }
241
242 /*
243  * Returns the number of an image in the WIM file, given a string that is either
244  * the number of the image, or the name of the image.  The images are numbered
245  * starting at 1.
246  */
247 WIMLIBAPI int
248 wimlib_resolve_image(WIMStruct *w, const tchar *image_name_or_num)
249 {
250         tchar *p;
251         long image;
252         int i;
253
254         if (!image_name_or_num || !*image_name_or_num)
255                 return WIMLIB_NO_IMAGE;
256
257         if (!tstrcasecmp(image_name_or_num, T("all"))
258             || !tstrcasecmp(image_name_or_num, T("*")))
259                 return WIMLIB_ALL_IMAGES;
260         image = tstrtol(image_name_or_num, &p, 10);
261         if (p != image_name_or_num && *p == T('\0') && image > 0) {
262                 if (image > w->hdr.image_count)
263                         return WIMLIB_NO_IMAGE;
264                 return image;
265         } else {
266                 for (i = 1; i <= w->hdr.image_count; i++) {
267                         if (!tstrcmp(image_name_or_num,
268                                      wimlib_get_image_name(w, i)))
269                                 return i;
270                 }
271                 return WIMLIB_NO_IMAGE;
272         }
273 }
274
275 /* Prints some basic information about a WIM file. */
276 WIMLIBAPI void
277 wimlib_print_wim_information(const WIMStruct *w)
278 {
279         const struct wim_header *hdr;
280
281         hdr = &w->hdr;
282         tputs(T("WIM Information:"));
283         tputs(T("----------------"));
284         tprintf(T("Path:           %"TS"\n"), w->filename);
285         tfputs(T("GUID:           0x"), stdout);
286         print_byte_field(hdr->guid, WIM_GID_LEN, stdout);
287         tputchar(T('\n'));
288         tprintf(T("Image Count:    %d\n"), hdr->image_count);
289         tprintf(T("Compression:    %"TS"\n"),
290                 wimlib_get_compression_type_string(wimlib_get_compression_type(w)));
291         tprintf(T("Part Number:    %d/%d\n"), hdr->part_number, hdr->total_parts);
292         tprintf(T("Boot Index:     %d\n"), hdr->boot_idx);
293         tprintf(T("Size:           %"PRIu64" bytes\n"),
294                 wim_info_get_total_bytes(w->wim_info));
295         tprintf(T("Integrity Info: %"TS"\n"),
296                 (w->hdr.integrity.offset != 0) ? T("yes") : T("no"));
297         tputchar(T('\n'));
298 }
299
300 WIMLIBAPI bool
301 wimlib_has_integrity_table(const WIMStruct *w)
302 {
303         return w->hdr.integrity.size != 0;
304 }
305
306 WIMLIBAPI void
307 wimlib_print_available_images(const WIMStruct *w, int image)
308 {
309         int first;
310         int last;
311         int i;
312         int n;
313         if (image == WIMLIB_ALL_IMAGES) {
314                 n = tprintf(T("Available Images:\n"));
315                 first = 1;
316                 last = w->hdr.image_count;
317         } else if (image >= 1 && image <= w->hdr.image_count) {
318                 n = tprintf(T("Information for Image %d\n"), image);
319                 first = image;
320                 last = image;
321         } else {
322                 tprintf(T("wimlib_print_available_images(): Invalid image %d"),
323                         image);
324                 return;
325         }
326         for (i = 0; i < n - 1; i++)
327                 tputchar(T('-'));
328         tputchar(T('\n'));
329         for (i = first; i <= last; i++)
330                 print_image_info(w->wim_info, i);
331 }
332
333
334 /* Prints the metadata for the specified image, which may be WIMLIB_ALL_IMAGES, but
335  * not WIMLIB_NO_IMAGE. */
336 WIMLIBAPI int
337 wimlib_print_metadata(WIMStruct *w, int image)
338 {
339         if (w->hdr.part_number != 1) {
340                 ERROR("Cannot show the metadata from part %hu of a %hu-part split WIM!",
341                        w->hdr.part_number, w->hdr.total_parts);
342                 ERROR("Select the first part of the split WIM to see the metadata.");
343                 return WIMLIB_ERR_SPLIT_UNSUPPORTED;
344         }
345         return for_image(w, image, image_print_metadata);
346 }
347
348 WIMLIBAPI int
349 wimlib_print_files(WIMStruct *w, int image)
350 {
351         if (w->hdr.part_number != 1) {
352                 ERROR("Cannot list the files from part %hu of a %hu-part split WIM!",
353                        w->hdr.part_number, w->hdr.total_parts);
354                 ERROR("Select the first part of the split WIM if you'd like to list the files.");
355                 return WIMLIB_ERR_SPLIT_UNSUPPORTED;
356         }
357         return for_image(w, image, image_print_files);
358 }
359
360 /* Sets the index of the bootable image. */
361 WIMLIBAPI int
362 wimlib_set_boot_idx(WIMStruct *w, int boot_idx)
363 {
364         if (w->hdr.total_parts != 1) {
365                 ERROR("Cannot modify the boot index of a split WIM!");
366                 return WIMLIB_ERR_SPLIT_UNSUPPORTED;
367         }
368         if (boot_idx < 0 || boot_idx > w->hdr.image_count)
369                 return WIMLIB_ERR_INVALID_IMAGE;
370         w->hdr.boot_idx = boot_idx;
371         return 0;
372 }
373
374 WIMLIBAPI int
375 wimlib_get_part_number(const WIMStruct *w, int *total_parts_ret)
376 {
377         if (total_parts_ret)
378                 *total_parts_ret = w->hdr.total_parts;
379         return w->hdr.part_number;
380 }
381
382
383 WIMLIBAPI int
384 wimlib_get_boot_idx(const WIMStruct *w)
385 {
386         return w->hdr.boot_idx;
387 }
388
389 /*
390  * Begins the reading of a WIM file; opens the file and reads its header and
391  * lookup table, and optionally checks the integrity.
392  */
393 static int
394 begin_read(WIMStruct *w, const tchar *in_wim_path, int open_flags,
395            wimlib_progress_func_t progress_func)
396 {
397         int ret;
398         int xml_num_images;
399
400         DEBUG("Reading the WIM file `%"TS"'", in_wim_path);
401
402         w->fp = tfopen(in_wim_path, T("rb"));
403         if (!w->fp) {
404                 ERROR_WITH_ERRNO("Failed to open `%"TS"' for reading",
405                                  in_wim_path);
406                 return WIMLIB_ERR_OPEN;
407         }
408
409         /* The absolute path to the WIM is requested so that wimlib_overwrite()
410          * still works even if the process changes its working directory.  This
411          * actually happens if a WIM is mounted read-write, since the FUSE
412          * thread changes directory to "/", and it needs to be able to find the
413          * WIM file again.
414          *
415          * This will break if the full path to the WIM changes in the
416          * intervening time...
417          *
418          * Warning: in Windows native builds, realpath() calls the replacement
419          * function in win32.c.
420          */
421         w->filename = realpath(in_wim_path, NULL);
422         if (!w->filename) {
423                 ERROR_WITH_ERRNO("Failed to resolve WIM filename");
424                 if (errno == ENOMEM)
425                         return WIMLIB_ERR_NOMEM;
426                 else
427                         return WIMLIB_ERR_OPEN;
428         }
429
430         ret = read_header(w->fp, &w->hdr, open_flags);
431         if (ret)
432                 return ret;
433
434         DEBUG("According to header, WIM contains %u images", w->hdr.image_count);
435
436         /* If the boot index is invalid, print a warning and set it to 0 */
437         if (w->hdr.boot_idx > w->hdr.image_count) {
438                 WARNING("In `%"TS"', image %u is marked as bootable, "
439                         "but there are only %u images in the WIM",
440                         in_wim_path, w->hdr.boot_idx, w->hdr.image_count);
441                 w->hdr.boot_idx = 0;
442         }
443
444         if (wimlib_get_compression_type(w) == WIMLIB_COMPRESSION_TYPE_INVALID) {
445                 ERROR("Invalid compression type (WIM header flags = 0x%x)",
446                       w->hdr.flags);
447                 return WIMLIB_ERR_INVALID_COMPRESSION_TYPE;
448         }
449
450         if (open_flags & WIMLIB_OPEN_FLAG_CHECK_INTEGRITY) {
451                 ret = check_wim_integrity(w, progress_func);
452                 if (ret == WIM_INTEGRITY_NONEXISTENT) {
453                         WARNING("No integrity information for `%"TS"'; skipping "
454                                 "integrity check.", in_wim_path);
455                 } else if (ret == WIM_INTEGRITY_NOT_OK) {
456                         ERROR("WIM is not intact! (Failed integrity check)");
457                         return WIMLIB_ERR_INTEGRITY;
458                 } else if (ret != WIM_INTEGRITY_OK) {
459                         return ret;
460                 }
461         }
462
463         if (w->hdr.image_count != 0 && w->hdr.part_number == 1) {
464                 w->image_metadata = new_image_metadata_array(w->hdr.image_count);
465                 if (!w->image_metadata)
466                         return WIMLIB_ERR_NOMEM;
467         }
468
469         ret = read_lookup_table(w);
470         if (ret)
471                 return ret;
472
473         ret = read_xml_data(w->fp, &w->hdr.xml_res_entry,
474                             &w->xml_data, &w->wim_info);
475         if (ret)
476                 return ret;
477
478         xml_num_images = wim_info_get_num_images(w->wim_info);
479         if (xml_num_images != w->hdr.image_count) {
480                 ERROR("In the file `%"TS"', there are %u <IMAGE> elements "
481                       "in the XML data,", in_wim_path, xml_num_images);
482                 ERROR("but %u images in the WIM!  There must be exactly one "
483                       "<IMAGE> element per image.", w->hdr.image_count);
484                 return WIMLIB_ERR_IMAGE_COUNT;
485         }
486
487         DEBUG("Done beginning read of WIM file `%"TS"'.", in_wim_path);
488         return 0;
489 }
490
491 /*
492  * Opens a WIM file and creates a WIMStruct for it.
493  */
494 WIMLIBAPI int
495 wimlib_open_wim(const tchar *wim_file, int open_flags,
496                 WIMStruct **w_ret,
497                 wimlib_progress_func_t progress_func)
498 {
499         WIMStruct *w;
500         int ret;
501
502         if (!wim_file || !w_ret)
503                 return WIMLIB_ERR_INVALID_PARAM;
504
505         w = new_wim_struct();
506         if (!w)
507                 return WIMLIB_ERR_NOMEM;
508
509         ret = begin_read(w, wim_file, open_flags, progress_func);
510         if (ret == 0)
511                 *w_ret = w;
512         else
513                 wimlib_free(w);
514         return ret;
515 }
516
517 void
518 destroy_image_metadata(struct wim_image_metadata *imd,
519                        struct wim_lookup_table *table,
520                        bool free_metadata_lte)
521 {
522         free_dentry_tree(imd->root_dentry, table);
523         imd->root_dentry = NULL;
524         free_security_data(imd->security_data);
525         imd->security_data = NULL;
526
527         if (free_metadata_lte) {
528                 free_lookup_table_entry(imd->metadata_lte);
529                 imd->metadata_lte = NULL;
530         }
531         if (!table) {
532                 struct wim_lookup_table_entry *lte, *tmp;
533                 list_for_each_entry_safe(lte, tmp, &imd->unhashed_streams, unhashed_list)
534                         free_lookup_table_entry(lte);
535         }
536         INIT_LIST_HEAD(&imd->unhashed_streams);
537         INIT_LIST_HEAD(&imd->inode_list);
538 #ifdef WITH_NTFS_3G
539         if (imd->ntfs_vol) {
540                 do_ntfs_umount(imd->ntfs_vol);  
541                 imd->ntfs_vol = NULL;
542         }
543 #endif
544 }
545
546 void
547 put_image_metadata(struct wim_image_metadata *imd,
548                    struct wim_lookup_table *table)
549 {
550         if (imd && --imd->refcnt == 0) {
551                 destroy_image_metadata(imd, table, true);
552                 FREE(imd);
553         }
554 }
555
556 /* Appends the specified image metadata structure to the array of image metadata
557  * for a WIM, and increments the image count. */
558 int
559 append_image_metadata(WIMStruct *w, struct wim_image_metadata *imd)
560 {
561         struct wim_image_metadata **imd_array;
562
563         DEBUG("Reallocating image metadata array for image_count = %u",
564               w->hdr.image_count + 1);
565         imd_array = REALLOC(w->image_metadata,
566                             sizeof(w->image_metadata[0]) * (w->hdr.image_count + 1));
567
568         if (!imd_array)
569                 return WIMLIB_ERR_NOMEM;
570         w->image_metadata = imd_array;
571         imd_array[w->hdr.image_count++] = imd;
572         return 0;
573 }
574
575
576 struct wim_image_metadata *
577 new_image_metadata()
578 {
579         struct wim_image_metadata *imd;
580
581         imd = CALLOC(1, sizeof(*imd));
582         if (imd) {
583                 imd->refcnt = 1;
584                 INIT_LIST_HEAD(&imd->inode_list);
585                 INIT_LIST_HEAD(&imd->unhashed_streams);
586                 DEBUG("Created new image metadata (refcnt=1)");
587         } else {
588                 ERROR_WITH_ERRNO("Failed to allocate new image metadata structure");
589         }
590         return imd;
591 }
592
593 struct wim_image_metadata **
594 new_image_metadata_array(unsigned num_images)
595 {
596         struct wim_image_metadata **imd_array;
597
598         DEBUG("Creating new image metadata array for %u images",
599               num_images);
600
601         imd_array = CALLOC(num_images, sizeof(imd_array[0]));
602
603         if (!imd_array) {
604                 ERROR("Failed to allocate memory for %u image metadata structures",
605                       num_images);
606                 return NULL;
607         }
608         for (unsigned i = 0; i < num_images; i++) {
609                 imd_array[i] = new_image_metadata();
610                 if (!imd_array[i]) {
611                         for (unsigned j = 0; j < i; j++)
612                                 put_image_metadata(imd_array[j], NULL);
613                         FREE(imd_array);
614                         return NULL;
615                 }
616         }
617         return imd_array;
618 }
619
620 /* Checksum all streams that are unhashed (other than the metadata streams),
621  * merging them into the lookup table as needed.  This is a no-op unless the
622  * library has previously used to add or mount an image using the same
623  * WIMStruct. */
624 int
625 wim_checksum_unhashed_streams(WIMStruct *w)
626 {
627         int ret;
628         for (int i = 0; i < w->hdr.image_count; i++) {
629                 struct wim_lookup_table_entry *lte, *tmp;
630                 struct wim_image_metadata *imd = w->image_metadata[i];
631                 image_for_each_unhashed_stream_safe(lte, tmp, imd) {
632                         ret = hash_unhashed_stream(lte, w->lookup_table, NULL);
633                         if (ret)
634                                 return ret;
635                 }
636         }
637         return 0;
638 }
639
640 /* Frees the memory for the WIMStruct, including all internal memory; also
641  * closes all files associated with the WIMStruct.  */
642 WIMLIBAPI void
643 wimlib_free(WIMStruct *w)
644 {
645         DEBUG("Freeing WIMStruct");
646
647         if (!w)
648                 return;
649         if (w->fp)
650                 fclose(w->fp);
651         if (w->out_fp)
652                 fclose(w->out_fp);
653
654 #ifdef WITH_FUSE
655         if (w->fp_tab) {
656                 for (size_t i = 0; i < w->num_allocated_fps; i++)
657                         if (w->fp_tab[i])
658                                 fclose(w->fp_tab[i]);
659                 FREE(w->fp_tab);
660         }
661         pthread_mutex_destroy(&w->fp_tab_mutex);
662 #endif
663
664         free_lookup_table(w->lookup_table);
665
666         FREE(w->filename);
667         FREE(w->xml_data);
668         free_wim_info(w->wim_info);
669         if (w->image_metadata) {
670                 for (unsigned i = 0; i < w->hdr.image_count; i++)
671                         put_image_metadata(w->image_metadata[i], NULL);
672                 FREE(w->image_metadata);
673         }
674         FREE(w);
675         DEBUG("Freed WIMStruct");
676 }
677
678 static bool
679 test_locale_ctype_utf8()
680 {
681 #ifdef __WIN32__
682         return false;
683 #else
684         char *ctype = nl_langinfo(CODESET);
685
686         return (!strstr(ctype, "UTF-8") ||
687                 !strstr(ctype, "UTF8") ||
688                 !strstr(ctype, "utf8") ||
689                 !strstr(ctype, "utf-8"));
690 #endif
691 }
692
693 /* Get global memory allocations out of the way,
694  * single-threaded programs like 'imagex'. */
695 WIMLIBAPI int
696 wimlib_global_init()
697 {
698         libxml_global_init();
699 #ifdef WITH_NTFS_3G
700         libntfs3g_global_init();
701 #endif
702         wimlib_mbs_is_utf8 = test_locale_ctype_utf8();
703 #ifdef __WIN32__
704         win32_global_init();
705 #endif
706         return 0;
707 }
708
709 /* Free global memory allocations.  Not strictly necessary if the process using
710  * wimlib is just about to exit (as is the case for 'imagex'). */
711 WIMLIBAPI void
712 wimlib_global_cleanup()
713 {
714         libxml_global_cleanup();
715         iconv_global_cleanup();
716 #ifdef __WIN32__
717         win32_global_cleanup();
718 #endif
719 }