4 * Capture a WIM image from a NTFS volume. We capture everything we can,
5 * including security data and alternate data streams.
9 * Copyright (C) 2012, 2013 Eric Biggers
11 * This file is part of wimlib, a library for working with WIM files.
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)
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
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/.
30 #include <ntfs-3g/endians.h>
31 #include <ntfs-3g/types.h>
33 #include "wimlib_internal.h"
37 #include "lookup_table.h"
38 #include "buffer_io.h"
39 #include <ntfs-3g/layout.h>
40 #include <ntfs-3g/acls.h>
41 #include <ntfs-3g/attrib.h>
42 #include <ntfs-3g/misc.h>
43 #include <ntfs-3g/reparse.h>
44 #include <ntfs-3g/security.h> /* security.h before xattrs.h */
45 #include <ntfs-3g/xattrs.h>
46 #include <ntfs-3g/volume.h>
52 /* Red-black tree that maps SHA1 message digests of security descriptors to
53 * security IDs, which are themselves indices into the table of security
54 * descriptors in the 'struct wim_security_data'. */
56 struct wim_security_data *sd;
57 struct rb_root rb_root;
62 u8 hash[SHA1_HASH_SIZE];
63 struct rb_node rb_node;
66 static void free_sd_tree(struct rb_node *node)
69 free_sd_tree(node->rb_left);
70 free_sd_tree(node->rb_right);
71 FREE(container_of(node, struct sd_node, rb_node));
74 /* Frees a security descriptor index set. */
75 static void destroy_sd_set(struct sd_set *sd_set)
77 free_sd_tree(sd_set->rb_root.rb_node);
80 /* Inserts a a new node into the security descriptor index tree. */
81 static void insert_sd_node(struct sd_set *set, struct sd_node *new)
83 struct rb_root *root = &set->rb_root;
84 struct rb_node **p = &(root->rb_node);
85 struct rb_node *rb_parent = NULL;
88 struct sd_node *this = container_of(*p, struct sd_node, rb_node);
89 int cmp = hashes_cmp(new->hash, this->hash);
95 p = &((*p)->rb_right);
97 wimlib_assert(0); /* Duplicate SHA1 message digest */
99 rb_link_node(&new->rb_node, rb_parent, p);
100 rb_insert_color(&new->rb_node, root);
103 /* Returns the index of the security descriptor having a SHA1 message digest of
104 * @hash. If not found, return -1. */
105 static int lookup_sd(struct sd_set *set, const u8 hash[SHA1_HASH_SIZE])
107 struct rb_node *node = set->rb_root.rb_node;
110 struct sd_node *sd_node = container_of(node, struct sd_node, rb_node);
111 int cmp = hashes_cmp(hash, sd_node->hash);
113 node = node->rb_left;
115 node = node->rb_right;
117 return sd_node->security_id;
123 * Adds a security descriptor to the indexed security descriptor set as well as
124 * the corresponding `struct wim_security_data', and returns the new security
125 * ID; or, if there is an existing security descriptor that is the same, return
126 * the security ID for it. If a new security descriptor cannot be allocated,
129 static int sd_set_add_sd(struct sd_set *sd_set, const char descriptor[],
132 u8 hash[SHA1_HASH_SIZE];
138 struct wim_security_data *sd;
140 sha1_buffer((const u8*)descriptor, size, hash);
142 security_id = lookup_sd(sd_set, hash);
143 if (security_id >= 0) /* Identical descriptor already exists */
146 /* Need to add a new security descriptor */
147 new = MALLOC(sizeof(*new));
150 descr_copy = MALLOC(size);
156 memcpy(descr_copy, descriptor, size);
157 new->security_id = sd->num_entries;
158 copy_hash(new->hash, hash);
160 descriptors = REALLOC(sd->descriptors,
161 (sd->num_entries + 1) * sizeof(sd->descriptors[0]));
164 sd->descriptors = descriptors;
165 sizes = REALLOC(sd->sizes,
166 (sd->num_entries + 1) * sizeof(sd->sizes[0]));
170 sd->descriptors[sd->num_entries] = descr_copy;
171 sd->sizes[sd->num_entries] = size;
173 DEBUG("There are now %d security descriptors", sd->num_entries);
174 sd->total_length += size + sizeof(sd->sizes[0]);
175 insert_sd_node(sd_set, new);
176 return new->security_id;
185 static inline ntfschar *attr_record_name(ATTR_RECORD *ar)
187 return (ntfschar*)((u8*)ar + le16_to_cpu(ar->name_offset));
190 /* Calculates the SHA1 message digest of a NTFS attribute.
192 * @ni: The NTFS inode containing the attribute.
193 * @ar: The ATTR_RECORD describing the attribute.
194 * @md: If successful, the returned SHA1 message digest.
195 * @reparse_tag_ret: Optional pointer into which the first 4 bytes of the
196 * attribute will be written (to get the reparse
199 * Return 0 on success or nonzero on error.
201 static int ntfs_attr_sha1sum(ntfs_inode *ni, ATTR_RECORD *ar,
202 u8 md[SHA1_HASH_SIZE],
203 bool is_reparse_point,
204 u32 *reparse_tag_ret)
208 char buf[BUFFER_SIZE];
212 na = ntfs_attr_open(ni, ar->type, attr_record_name(ar),
215 ERROR_WITH_ERRNO("Failed to open NTFS attribute");
216 return WIMLIB_ERR_NTFS_3G;
219 bytes_remaining = na->data_size;
221 if (is_reparse_point) {
222 if (ntfs_attr_pread(na, 0, 8, buf) != 8)
224 *reparse_tag_ret = le32_to_cpu(*(u32*)buf);
225 DEBUG("ReparseTag = %#x", *reparse_tag_ret);
227 bytes_remaining -= 8;
231 while (bytes_remaining) {
232 s64 to_read = min(bytes_remaining, sizeof(buf));
233 if (ntfs_attr_pread(na, pos, to_read, buf) != to_read)
235 sha1_update(&ctx, buf, to_read);
237 bytes_remaining -= to_read;
239 sha1_final(md, &ctx);
243 ERROR_WITH_ERRNO("Error reading NTFS attribute");
244 return WIMLIB_ERR_NTFS_3G;
247 /* Load the streams from a file or reparse point in the NTFS volume into the WIM
249 static int capture_ntfs_streams(struct wim_dentry *dentry, ntfs_inode *ni,
250 char path[], size_t path_len,
251 struct wim_lookup_table *lookup_table,
252 ntfs_volume **ntfs_vol_p,
255 ntfs_attr_search_ctx *actx;
256 u8 attr_hash[SHA1_HASH_SIZE];
257 struct ntfs_location *ntfs_loc = NULL;
259 struct wim_lookup_table_entry *lte;
261 DEBUG2("Capturing NTFS data streams from `%s'", path);
263 /* Get context to search the streams of the NTFS file. */
264 actx = ntfs_attr_get_search_ctx(ni, NULL);
266 ERROR_WITH_ERRNO("Cannot get NTFS attribute search "
268 return WIMLIB_ERR_NTFS_3G;
271 /* Capture each data stream or reparse data stream. */
272 while (!ntfs_attr_lookup(type, NULL, 0,
273 CASE_SENSITIVE, 0, NULL, 0, actx))
275 char *stream_name_utf8;
277 u64 data_size = ntfs_get_attribute_value_length(actx->attr);
278 u64 name_length = actx->attr->name_length;
280 if (data_size == 0) {
282 ERROR_WITH_ERRNO("Failed to get size of attribute of "
284 ret = WIMLIB_ERR_NTFS_3G;
287 /* Empty stream. No lookup table entry is needed. */
290 if (type == AT_REPARSE_POINT && data_size < 8) {
291 ERROR("`%s': reparse point buffer too small",
293 ret = WIMLIB_ERR_NTFS_3G;
296 /* Checksum the stream. */
297 ret = ntfs_attr_sha1sum(ni, actx->attr, attr_hash,
298 type == AT_REPARSE_POINT, &reparse_tag);
302 if (type == AT_REPARSE_POINT)
303 dentry->d_inode->i_reparse_tag = reparse_tag;
305 /* Make a lookup table entry for the stream, or use an existing
306 * one if there's already an identical stream. */
307 lte = __lookup_resource(lookup_table, attr_hash);
308 ret = WIMLIB_ERR_NOMEM;
312 ntfs_loc = CALLOC(1, sizeof(*ntfs_loc));
315 ntfs_loc->ntfs_vol_p = ntfs_vol_p;
316 ntfs_loc->path_utf8 = MALLOC(path_len + 1);
317 if (!ntfs_loc->path_utf8)
318 goto out_free_ntfs_loc;
319 memcpy(ntfs_loc->path_utf8, path, path_len + 1);
321 ntfs_loc->stream_name_utf16 = MALLOC(name_length * 2);
322 if (!ntfs_loc->stream_name_utf16)
323 goto out_free_ntfs_loc;
324 memcpy(ntfs_loc->stream_name_utf16,
325 attr_record_name(actx->attr),
326 actx->attr->name_length * 2);
327 ntfs_loc->stream_name_utf16_num_chars = name_length;
330 lte = new_lookup_table_entry();
332 goto out_free_ntfs_loc;
333 lte->ntfs_loc = ntfs_loc;
334 lte->resource_location = RESOURCE_IN_NTFS_VOLUME;
335 if (type == AT_REPARSE_POINT) {
336 ntfs_loc->is_reparse_point = true;
337 lte->resource_entry.original_size = data_size - 8;
338 lte->resource_entry.size = data_size - 8;
340 ntfs_loc->is_reparse_point = false;
341 lte->resource_entry.original_size = data_size;
342 lte->resource_entry.size = data_size;
345 DEBUG("Add resource for `%s' (size = %"PRIu64")",
346 dentry->file_name_utf8,
347 lte->resource_entry.original_size);
348 copy_hash(lte->hash, attr_hash);
349 lookup_table_insert(lookup_table, lte);
352 if (name_length == 0) {
353 /* Unnamed data stream. Put the reference to it in the
356 if (dentry->d_inode->i_lte) {
357 ERROR("Found two un-named data streams for "
359 ret = WIMLIB_ERR_NTFS_3G;
362 dentry->d_inode->i_lte = lte;
364 if (dentry->d_inode->i_lte) {
365 WARNING("Found two un-named data streams for "
367 free_lookup_table_entry(lte);
369 dentry->d_inode->i_lte = lte;
373 /* Named data stream. Put the reference to it in the
374 * alternate data stream entries */
375 struct wim_ads_entry *new_ads_entry;
376 size_t stream_name_utf8_len;
378 ret = utf16_to_utf8((const char*)attr_record_name(actx->attr),
381 &stream_name_utf8_len);
384 new_ads_entry = inode_add_ads(dentry->d_inode, stream_name_utf8);
385 FREE(stream_name_utf8);
389 wimlib_assert(new_ads_entry->stream_name_len == name_length * 2);
391 new_ads_entry->lte = lte;
397 free_lookup_table_entry(lte);
400 FREE(ntfs_loc->path_utf8);
401 FREE(ntfs_loc->stream_name_utf16);
405 ntfs_attr_put_search_ctx(actx);
407 DEBUG2("Successfully captured NTFS streams from `%s'", path);
409 ERROR("Failed to capture NTFS streams from `%s", path);
413 /* Red-black tree that maps NTFS inode numbers to DOS names */
414 struct dos_name_map {
415 struct rb_root rb_root;
418 struct dos_name_node {
419 struct rb_node rb_node;
425 /* Inserts a new DOS name into the map */
426 static int insert_dos_name(struct dos_name_map *map,
427 const ntfschar *dos_name, int name_len,
430 struct dos_name_node *new_node;
432 struct rb_root *root;
433 struct rb_node *rb_parent;
435 DEBUG("DOS name_len = %d", name_len);
436 new_node = MALLOC(sizeof(struct dos_name_node));
440 /* DOS names are supposed to be 12 characters max (that's 24 bytes,
441 * assuming 2-byte ntfs characters) */
442 wimlib_assert(name_len * sizeof(ntfschar) <= sizeof(new_node->dos_name));
444 /* Initialize the DOS name, DOS name length, and NTFS inode number of
445 * the red-black tree node */
446 memcpy(new_node->dos_name, dos_name, name_len * sizeof(ntfschar));
447 new_node->name_len_bytes = name_len * sizeof(ntfschar);
448 new_node->ntfs_ino = ntfs_ino;
450 /* Insert the red-black tree node */
451 root = &map->rb_root;
455 struct dos_name_node *this;
457 this = container_of(*p, struct dos_name_node, rb_node);
459 if (new_node->ntfs_ino < this->ntfs_ino)
460 p = &((*p)->rb_left);
461 else if (new_node->ntfs_ino > this->ntfs_ino)
462 p = &((*p)->rb_right);
464 /* This should be impossible since a NTFS inode cannot
465 * have multiple DOS names, and we only should get each
466 * DOS name entry once from the ntfs_readdir() calls. */
467 ERROR("NTFS inode %"PRIu64" has multiple DOS names",
472 rb_link_node(&new_node->rb_node, rb_parent, p);
473 rb_insert_color(&new_node->rb_node, root);
474 DEBUG("Inserted DOS name for inode %"PRIu64, ntfs_ino);
478 /* Returns a structure that contains the DOS name and its length for a NTFS
479 * inode, or NULL if the inode has no DOS name. */
480 static struct dos_name_node *
481 lookup_dos_name(const struct dos_name_map *map, u64 ntfs_ino)
483 struct rb_node *node = map->rb_root.rb_node;
485 struct dos_name_node *this;
486 this = container_of(node, struct dos_name_node, rb_node);
487 if (ntfs_ino < this->ntfs_ino)
488 node = node->rb_left;
489 else if (ntfs_ino > this->ntfs_ino)
490 node = node->rb_right;
497 static int set_dentry_dos_name(struct wim_dentry *dentry, void *arg)
499 const struct dos_name_map *map = arg;
500 const struct dos_name_node *node;
502 if (dentry->is_win32_name) {
503 node = lookup_dos_name(map, dentry->d_inode->i_ino);
505 dentry->short_name = MALLOC(node->name_len_bytes);
506 if (!dentry->short_name)
507 return WIMLIB_ERR_NOMEM;
508 memcpy(dentry->short_name, node->dos_name,
509 node->name_len_bytes);
510 dentry->short_name_len = node->name_len_bytes;
511 DEBUG("Assigned DOS name to ino %"PRIu64,
512 dentry->d_inode->i_ino);
514 WARNING("NTFS inode %"PRIu64" has Win32 name with no "
515 "corresponding DOS name",
516 dentry->d_inode->i_ino);
522 static void free_dos_name_tree(struct rb_node *node) {
524 free_dos_name_tree(node->rb_left);
525 free_dos_name_tree(node->rb_right);
526 FREE(container_of(node, struct dos_name_node, rb_node));
530 static void destroy_dos_name_map(struct dos_name_map *map)
532 free_dos_name_tree(map->rb_root.rb_node);
536 struct wim_dentry *parent;
540 struct wim_lookup_table *lookup_table;
541 struct sd_set *sd_set;
542 struct dos_name_map *dos_name_map;
543 const struct capture_config *config;
544 ntfs_volume **ntfs_vol_p;
546 wimlib_progress_func_t progress_func;
550 build_dentry_tree_ntfs_recursive(struct wim_dentry **root_p, ntfs_inode *dir_ni,
551 ntfs_inode *ni, char path[], size_t path_len,
553 struct wim_lookup_table *lookup_table,
554 struct sd_set *sd_set,
555 const struct capture_config *config,
556 ntfs_volume **ntfs_vol_p,
558 wimlib_progress_func_t progress_func);
560 static int wim_ntfs_capture_filldir(void *dirent, const ntfschar *name,
561 const int name_len, const int name_type,
562 const s64 pos, const MFT_REF mref,
563 const unsigned dt_type)
565 struct readdir_ctx *ctx;
566 size_t utf8_name_len;
568 struct wim_dentry *child;
573 if (name_type & FILE_NAME_DOS) {
574 /* If this is the entry for a DOS name, store it for later. */
575 ret = insert_dos_name(ctx->dos_name_map, name,
576 name_len, mref & MFT_REF_MASK_CPU);
578 /* Return now if an error occurred or if this is just a DOS name
579 * and not a Win32+DOS name. */
580 if (ret != 0 || name_type == FILE_NAME_DOS)
583 ret = utf16_to_utf8((const char*)name, name_len * 2,
584 &utf8_name, &utf8_name_len);
588 if (utf8_name[0] == '.' &&
589 (utf8_name[1] == '\0' ||
590 (utf8_name[1] == '.' && utf8_name[2] == '\0'))) {
593 * note: name_type is POSIX for these, so DOS names will not
594 * have been inserted for them. */
596 goto out_free_utf8_name;
599 /* Open the inode for this directory entry and recursively capture the
600 * directory tree rooted at it */
601 ntfs_inode *ni = ntfs_inode_open(ctx->dir_ni->vol, mref);
603 ERROR_WITH_ERRNO("Failed to open NTFS inode");
604 goto out_free_utf8_name;
606 path_len = ctx->path_len;
608 ctx->path[path_len++] = '/';
609 memcpy(ctx->path + path_len, utf8_name, utf8_name_len + 1);
610 path_len += utf8_name_len;
612 ret = build_dentry_tree_ntfs_recursive(&child, ctx->dir_ni,
613 ni, ctx->path, path_len, name_type,
614 ctx->lookup_table, ctx->sd_set,
615 ctx->config, ctx->ntfs_vol_p,
616 ctx->add_image_flags,
619 dentry_add_child(ctx->parent, child);
620 ntfs_inode_close(ni);
626 /* Recursively build a WIM dentry tree corresponding to a NTFS volume.
627 * At the same time, update the WIM lookup table with lookup table entries for
628 * the NTFS streams, and build an array of security descriptors.
630 static int build_dentry_tree_ntfs_recursive(struct wim_dentry **root_p,
636 struct wim_lookup_table *lookup_table,
637 struct sd_set *sd_set,
638 const struct capture_config *config,
639 ntfs_volume **ntfs_vol_p,
641 wimlib_progress_func_t progress_func)
645 struct wim_dentry *root;
647 if (exclude_path(path, config, false)) {
648 /* Exclude a file or directory tree based on the capture
649 * configuration file */
650 if ((add_image_flags & WIMLIB_ADD_IMAGE_FLAG_VERBOSE)
653 union wimlib_progress_info info;
654 info.scan.cur_path = path;
655 info.scan.excluded = true;
656 progress_func(WIMLIB_PROGRESS_MSG_SCAN_DENTRY, &info);
662 /* Get file attributes */
663 struct SECURITY_CONTEXT ctx;
664 memset(&ctx, 0, sizeof(ctx));
666 ret = ntfs_xattr_system_getxattr(&ctx, XATTR_NTFS_ATTRIB,
667 ni, dir_ni, (char *)&attributes,
670 ERROR_WITH_ERRNO("Failed to get NTFS attributes from `%s'",
672 return WIMLIB_ERR_NTFS_3G;
675 if ((add_image_flags & WIMLIB_ADD_IMAGE_FLAG_VERBOSE)
678 union wimlib_progress_info info;
679 info.scan.cur_path = path;
680 info.scan.excluded = false;
681 progress_func(WIMLIB_PROGRESS_MSG_SCAN_DENTRY, &info);
684 /* Create the new WIM dentry */
685 root = new_dentry_with_timeless_inode(path_basename(path));
688 return WIMLIB_ERR_INVALID_UTF8_STRING;
689 else if (errno == ENOMEM)
690 return WIMLIB_ERR_NOMEM;
692 return WIMLIB_ERR_ICONV_NOT_AVAILABLE;
696 if (name_type & FILE_NAME_WIN32) /* Win32 or Win32+DOS name */
697 root->is_win32_name = 1;
698 root->d_inode->i_creation_time = le64_to_cpu(ni->creation_time);
699 root->d_inode->i_last_write_time = le64_to_cpu(ni->last_data_change_time);
700 root->d_inode->i_last_access_time = le64_to_cpu(ni->last_access_time);
701 root->d_inode->i_attributes = le32_to_cpu(attributes);
702 root->d_inode->i_ino = ni->mft_no;
703 root->d_inode->i_resolved = 1;
705 if (attributes & FILE_ATTR_REPARSE_POINT) {
706 /* Junction point, symbolic link, or other reparse point */
707 ret = capture_ntfs_streams(root, ni, path, path_len,
708 lookup_table, ntfs_vol_p,
710 } else if (ni->mrec->flags & MFT_RECORD_IS_DIRECTORY) {
712 /* Normal directory */
714 struct dos_name_map dos_name_map = { .rb_root = {.rb_node = NULL} };
715 struct readdir_ctx ctx = {
719 .path_len = path_len,
720 .lookup_table = lookup_table,
722 .dos_name_map = &dos_name_map,
724 .ntfs_vol_p = ntfs_vol_p,
725 .add_image_flags = add_image_flags,
726 .progress_func = progress_func,
728 ret = ntfs_readdir(ni, &pos, &ctx, wim_ntfs_capture_filldir);
730 ERROR_WITH_ERRNO("ntfs_readdir()");
731 ret = WIMLIB_ERR_NTFS_3G;
733 ret = for_dentry_child(root, set_dentry_dos_name,
736 destroy_dos_name_map(&dos_name_map);
739 ret = capture_ntfs_streams(root, ni, path, path_len,
740 lookup_table, ntfs_vol_p,
746 /* Get security descriptor */
750 ret = ntfs_xattr_system_getxattr(&ctx, XATTR_NTFS_ACL,
753 if (ret > sizeof(sd)) {
755 ret = ntfs_xattr_system_getxattr(&ctx, XATTR_NTFS_ACL,
756 ni, dir_ni, sd, ret);
759 root->d_inode->i_security_id = sd_set_add_sd(sd_set, sd, ret);
760 if (root->d_inode->i_security_id == -1) {
761 ERROR("Out of memory");
762 return WIMLIB_ERR_NOMEM;
764 DEBUG("Added security ID = %u for `%s'",
765 root->d_inode->i_security_id, path);
767 } else if (ret < 0) {
768 ERROR_WITH_ERRNO("Failed to get security information from "
770 ret = WIMLIB_ERR_NTFS_3G;
772 root->d_inode->i_security_id = -1;
773 DEBUG("No security ID for `%s'", path);
778 int build_dentry_tree_ntfs(struct wim_dentry **root_p,
780 struct wim_lookup_table *lookup_table,
781 struct wim_security_data *sd,
782 const struct capture_config *config,
784 wimlib_progress_func_t progress_func,
790 struct sd_set sd_set = {
794 ntfs_volume **ntfs_vol_p = extra_arg;
796 DEBUG("Mounting NTFS volume `%s' read-only", device);
798 #ifdef HAVE_NTFS_MNT_RDONLY
800 vol = ntfs_mount(device, NTFS_MNT_RDONLY);
802 /* NTFS-3g 2011, 2012 */
803 vol = ntfs_mount(device, MS_RDONLY);
806 ERROR_WITH_ERRNO("Failed to mount NTFS volume `%s' read-only",
808 return WIMLIB_ERR_NTFS_3G;
810 ntfs_open_secure(vol);
812 /* We don't want to capture the special NTFS files such as $Bitmap. Not
813 * to be confused with "hidden" or "system" files which are real files
814 * that we do need to capture. */
815 NVolClearShowSysFiles(vol);
817 DEBUG("Opening root NTFS dentry");
818 root_ni = ntfs_inode_open(vol, FILE_root);
820 ERROR_WITH_ERRNO("Failed to open root inode of NTFS volume "
822 ret = WIMLIB_ERR_NTFS_3G;
826 /* Currently we assume that all the UTF-8 paths fit into this length and
827 * there is no check for overflow. */
828 char *path = MALLOC(32768);
830 ERROR("Could not allocate memory for NTFS pathname");
831 ret = WIMLIB_ERR_NOMEM;
837 ret = build_dentry_tree_ntfs_recursive(root_p, NULL, root_ni, path, 1,
838 FILE_NAME_POSIX, lookup_table,
845 ntfs_inode_close(root_ni);
846 destroy_sd_set(&sd_set);
848 ntfs_index_ctx_put(vol->secure_xsii);
849 ntfs_index_ctx_put(vol->secure_xsdh);
850 ntfs_inode_close(vol->secure_ni);
853 if (ntfs_umount(vol, FALSE) != 0) {
854 ERROR_WITH_ERRNO("Failed to unmount NTFS volume `%s'",
857 ret = WIMLIB_ERR_NTFS_3G;
860 /* We need to leave the NTFS volume mounted so that we can read
861 * the NTFS files again when we are actually writing the WIM */