4 * This file implements mounting of WIM files using FUSE, which stands for
5 * Filesystem in Userspace. FUSE allows a filesystem to be implemented in a
6 * userspace process by implementing the filesystem primitives--- read(),
7 * write(), readdir(), etc.
11 * Copyright (C) 2012, 2013 Eric Biggers
13 * This file is part of wimlib, a library for working with WIM files.
15 * wimlib is free software; you can redistribute it and/or modify it under the
16 * terms of the GNU General Public License as published by the Free
17 * Software Foundation; either version 3 of the License, or (at your option)
20 * wimlib is distributed in the hope that it will be useful, but WITHOUT ANY
21 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
22 * A PARTICULAR PURPOSE. See the GNU General Public License for more
25 * You should have received a copy of the GNU General Public License
26 * along with wimlib; if not, see http://www.gnu.org/licenses/.
34 #include "wimlib/error.h"
39 # error "FUSE mount not supported on Win32! Please configure --without-fuse"
42 #include "wimlib/encoding.h"
43 #include "wimlib/file_io.h"
44 #include "wimlib/lookup_table.h"
45 #include "wimlib/metadata.h"
46 #include "wimlib/paths.h"
47 #include "wimlib/reparse.h"
48 #include "wimlib/resource.h"
49 #include "wimlib/swm.h"
50 #include "wimlib/timestamp.h"
51 #include "wimlib/version.h"
52 #include "wimlib/write.h"
53 #include "wimlib/xml.h"
64 #include <sys/types.h>
69 #define FUSE_USE_VERSION 26
73 #include <attr/xattr.h>
76 #define MSG_VERSION_TOO_HIGH -1
77 #define MSG_BREAK_LOOP -2
79 /* File descriptor to a file open on the WIM filesystem. */
81 struct wim_inode *f_inode;
82 struct wim_lookup_table_entry *f_lte;
88 struct wimfs_context {
89 /* The WIMStruct for the mounted WIM. */
92 /* Name of the staging directory for a read-write mount. Whenever a new file is
93 * created, it is done so in the staging directory. Furthermore, whenever a
94 * file in the WIM is modified, it is extracted to the staging directory. If
95 * changes are commited when the WIM is unmounted, the file resources are merged
96 * in from the staging directory when writing the new WIM. */
97 char *staging_dir_name;
98 size_t staging_dir_name_len;
100 /* Flags passed to wimlib_mount(). */
103 /* Default flags to use when looking up a WIM dentry (depends on whether
104 * the Windows interface to alternate data streams is being used or
106 int default_lookup_flags;
108 /* Next inode number to be assigned. Note: I didn't bother with a
109 * bitmap of free inode numbers since this isn't even a "real"
110 * filesystem anyway. */
113 /* List of inodes in the mounted image */
114 struct list_head *image_inode_list;
116 /* Name and message queue descriptors for message queues between the
117 * filesystem daemon process and the unmount process. These are used
118 * when the filesystem is unmounted and the process running
119 * wimlib_unmount_image() (i.e. the `imagex unmount' command) needs to
120 * communicate with the filesystem daemon running fuse_main() (i.e. the
121 * daemon created by the `imagex mount' or `imagex mountrw' commands */
122 char *unmount_to_daemon_mq_name;
123 char *daemon_to_unmount_mq_name;
124 mqd_t unmount_to_daemon_mq;
125 mqd_t daemon_to_unmount_mq;
135 init_wimfs_context(struct wimfs_context *ctx)
137 memset(ctx, 0, sizeof(*ctx));
138 ctx->unmount_to_daemon_mq = (mqd_t)-1;
139 ctx->daemon_to_unmount_mq = (mqd_t)-1;
142 #define WIMFS_CTX(fuse_ctx) ((struct wimfs_context*)(fuse_ctx)->private_data)
144 static inline struct wimfs_context *
145 wimfs_get_context(void)
147 return WIMFS_CTX(fuse_get_context());
150 static inline WIMStruct *
151 wimfs_get_WIMStruct(void)
153 return wimfs_get_context()->wim;
157 wimfs_ctx_readonly(const struct wimfs_context *ctx)
159 return (ctx->mount_flags & WIMLIB_MOUNT_FLAG_READWRITE) == 0;
163 get_lookup_flags(const struct wimfs_context *ctx)
165 return ctx->default_lookup_flags;
168 /* Returns nonzero if write permission is requested on the file open flags */
170 flags_writable(int open_flags)
172 return open_flags & (O_RDWR | O_WRONLY);
176 * Allocate a file descriptor for a stream.
178 * @inode: inode containing the stream we're opening
179 * @stream_id: ID of the stream we're opening
180 * @lte: Lookup table entry for the stream (may be NULL)
181 * @fd_ret: Return the allocated file descriptor if successful.
182 * @readonly: True if this is a read-only mount.
184 * Return 0 iff successful or error code if unsuccessful.
187 alloc_wimfs_fd(struct wim_inode *inode,
189 struct wim_lookup_table_entry *lte,
190 struct wimfs_fd **fd_ret,
193 static const u16 fds_per_alloc = 8;
194 static const u16 max_fds = 0xffff;
197 DEBUG("Allocating fd for stream ID %u from inode %#"PRIx64" "
198 "(open = %u, allocated = %u)",
199 stream_id, inode->i_ino, inode->i_num_opened_fds,
200 inode->i_num_allocated_fds);
202 if (inode->i_num_opened_fds == inode->i_num_allocated_fds) {
203 struct wimfs_fd **fds;
206 if (inode->i_num_allocated_fds == max_fds) {
210 num_new_fds = min(fds_per_alloc,
211 max_fds - inode->i_num_allocated_fds);
213 fds = REALLOC(inode->i_fds,
214 (inode->i_num_allocated_fds + num_new_fds) *
215 sizeof(inode->i_fds[0]));
220 memset(&fds[inode->i_num_allocated_fds], 0,
221 num_new_fds * sizeof(fds[0]));
223 inode->i_num_allocated_fds += num_new_fds;
225 for (u16 i = 0; ; i++) {
226 if (!inode->i_fds[i]) {
227 struct wimfs_fd *fd = CALLOC(1, sizeof(*fd));
236 fd->stream_id = stream_id;
238 inode->i_fds[i] = fd;
239 inode->i_num_opened_fds++;
240 if (lte && !readonly)
241 lte->num_opened_fds++;
242 DEBUG("Allocated fd (idx = %u)", fd->idx);
252 inode_put_fd(struct wim_inode *inode, struct wimfs_fd *fd)
254 wimlib_assert(inode != NULL);
255 wimlib_assert(fd->f_inode == inode);
256 wimlib_assert(inode->i_num_opened_fds != 0);
257 wimlib_assert(fd->idx < inode->i_num_allocated_fds);
258 wimlib_assert(inode->i_fds[fd->idx] == fd);
260 inode->i_fds[fd->idx] = NULL;
262 if (--inode->i_num_opened_fds == 0) {
265 inode->i_num_allocated_fds = 0;
266 if (inode->i_nlink == 0)
272 lte_put_fd(struct wim_lookup_table_entry *lte, struct wimfs_fd *fd)
274 wimlib_assert(fd->f_lte == lte);
276 if (!lte) /* Empty stream with no lookup table entry */
279 /* Close staging file descriptor if needed. */
281 if (lte->resource_location == RESOURCE_IN_STAGING_FILE
282 && fd->staging_fd != -1)
284 if (close(fd->staging_fd) != 0) {
285 ERROR_WITH_ERRNO("Failed to close staging file");
289 lte_decrement_num_opened_fds(lte);
293 /* Close a file descriptor. */
295 close_wimfs_fd(struct wimfs_fd *fd)
298 DEBUG("Closing fd (ino = %#"PRIx64", opened = %u, allocated = %u)",
299 fd->f_inode->i_ino, fd->f_inode->i_num_opened_fds,
300 fd->f_inode->i_num_allocated_fds);
301 ret = lte_put_fd(fd->f_lte, fd);
305 inode_put_fd(fd->f_inode, fd);
310 fuse_mask_mode(mode_t mode, struct fuse_context *fuse_ctx)
312 #if FUSE_MAJOR_VERSION > 2 || (FUSE_MAJOR_VERSION == 2 && FUSE_MINOR_VERSION >= 8)
313 mode &= ~fuse_ctx->umask;
319 * Add a new dentry with a new inode to a WIM image.
321 * Returns 0 on success, or negative error number on failure.
324 create_dentry(struct fuse_context *fuse_ctx, const char *path,
325 mode_t mode, int attributes, struct wim_dentry **dentry_ret)
327 struct wim_dentry *parent;
328 struct wim_dentry *new;
329 const char *basename;
330 struct wimfs_context *wimfs_ctx = WIMFS_CTX(fuse_ctx);
333 parent = get_parent_dentry(wimfs_ctx->wim, path);
337 if (!dentry_is_directory(parent))
340 basename = path_basename(path);
341 if (get_dentry_child_with_name(parent, basename))
344 ret = new_dentry_with_inode(basename, &new);
348 new->d_inode->i_resolved = 1;
349 new->d_inode->i_ino = wimfs_ctx->next_ino++;
350 new->d_inode->i_attributes = attributes;
352 if (wimfs_ctx->mount_flags & WIMLIB_MOUNT_FLAG_UNIX_DATA) {
353 if (inode_set_unix_data(new->d_inode,
356 fuse_mask_mode(mode, fuse_ctx),
357 wimfs_ctx->wim->lookup_table,
358 UNIX_DATA_ALL | UNIX_DATA_CREATE))
364 dentry_add_child(parent, new);
365 list_add_tail(&new->d_inode->i_list, wimfs_ctx->image_inode_list);
371 /* Remove a dentry from a mounted WIM image; i.e. remove an alias for the
372 * corresponding inode.
374 * If there are no remaining references to the inode either through dentries or
375 * open file descriptors, the inode is freed. Otherwise, the inode is not
376 * removed, but the dentry is unlinked and freed.
378 * Either way, all lookup table entries referenced by the inode have their
379 * reference count decremented. If a lookup table entry has no open file
380 * descriptors and no references remaining, it is freed, and the corresponding
381 * staging file is unlinked.
384 remove_dentry(struct wim_dentry *dentry,
385 struct wim_lookup_table *lookup_table)
387 struct wim_inode *inode = dentry->d_inode;
388 struct wim_lookup_table_entry *lte;
391 for (i = 0; i <= inode->i_num_ads; i++) {
392 lte = inode_stream_lte_resolved(inode, i);
394 lte_decrement_refcnt(lte, lookup_table);
396 unlink_dentry(dentry);
401 inode_default_unix_mode(const struct wim_inode *inode)
403 if (inode_is_symlink(inode))
404 return S_IFLNK | 0777;
405 else if (inode_is_directory(inode))
406 return S_IFDIR | 0777;
408 return S_IFREG | 0777;
411 /* Transfers file attributes from a struct wim_inode to a `stat' buffer.
413 * The lookup table entry tells us which stream in the inode we are statting.
414 * For a named data stream, everything returned is the same as the unnamed data
415 * stream except possibly the size and block count. */
417 inode_to_stbuf(const struct wim_inode *inode,
418 const struct wim_lookup_table_entry *lte,
421 const struct wimfs_context *ctx = wimfs_get_context();
423 memset(stbuf, 0, sizeof(struct stat));
424 stbuf->st_mode = inode_default_unix_mode(inode);
425 stbuf->st_uid = ctx->default_uid;
426 stbuf->st_gid = ctx->default_gid;
427 if (ctx->mount_flags & WIMLIB_MOUNT_FLAG_UNIX_DATA) {
428 struct wimlib_unix_data unix_data;
429 if (inode_get_unix_data(inode, &unix_data, NULL) == 0) {
430 stbuf->st_uid = unix_data.uid;
431 stbuf->st_gid = unix_data.gid;
432 stbuf->st_mode = unix_data.mode;
435 stbuf->st_ino = (ino_t)inode->i_ino;
436 stbuf->st_nlink = inode->i_nlink;
438 stbuf->st_size = wim_resource_size(lte);
441 #ifdef HAVE_STAT_NANOSECOND_PRECISION
442 stbuf->st_atim = wim_timestamp_to_timespec(inode->i_last_access_time);
443 stbuf->st_mtim = wim_timestamp_to_timespec(inode->i_last_write_time);
444 stbuf->st_ctim = stbuf->st_mtim;
446 stbuf->st_atime = wim_timestamp_to_unix(inode->i_last_access_time);
447 stbuf->st_mtime = wim_timestamp_to_unix(inode->i_last_write_time);
448 stbuf->st_ctime = stbuf->st_mtime;
450 stbuf->st_blocks = (stbuf->st_size + 511) / 512;
455 touch_inode(struct wim_inode *inode)
457 u64 now = get_wim_timestamp();
458 inode->i_last_access_time = now;
459 inode->i_last_write_time = now;
462 /* Creates a new staging file and returns its file descriptor opened for
465 * @name_ret: A location into which the a pointer to the newly allocated name of
466 * the staging file is stored.
468 * @ctx: Context for the WIM filesystem; this provides the name of the
471 * On success, returns the file descriptor for the staging file, opened for
472 * writing. On failure, returns -1 and sets errno.
475 create_staging_file(char **name_ret, struct wimfs_context *ctx)
483 static const size_t STAGING_FILE_NAME_LEN = 20;
485 name_len = ctx->staging_dir_name_len + 1 + STAGING_FILE_NAME_LEN;
486 name = MALLOC(name_len + 1);
494 memcpy(name, ctx->staging_dir_name, ctx->staging_dir_name_len);
495 name[ctx->staging_dir_name_len] = '/';
496 randomize_char_array_with_alnum(name + ctx->staging_dir_name_len + 1,
497 STAGING_FILE_NAME_LEN);
498 name[name_len] = '\0';
501 /* Just in case, verify that the randomly generated name doesn't name an
502 * existing file, and try again if so */
503 } while (stat(name, &stbuf) == 0);
505 if (errno != ENOENT) /* other error?! */
508 /* doesn't exist--- ok */
510 DEBUG("Creating staging file `%s'", name);
512 fd = open(name, O_WRONLY | O_CREAT | O_EXCL, 0600);
524 * Extract a WIM resource to the staging directory.
526 * @inode: Inode that contains the stream we are extracting
528 * @stream_id: Identifier for the stream (it stays constant even if the indices
529 * of the stream entries are changed)
531 * @lte: Pointer to pointer to the lookup table entry for the stream we need to
532 * extract, or NULL if there was no lookup table entry present for the stream
534 * @size: Number of bytes of the stream we want to extract (this supports the
535 * wimfs_truncate() function). It may be more than the actual stream length, in
536 * which case the extra space is filled with zeroes.
538 * @ctx: Context for the WIM filesystem.
540 * Returns 0 on success or a negative error code on failure.
543 extract_resource_to_staging_dir(struct wim_inode *inode,
545 struct wim_lookup_table_entry **lte,
547 struct wimfs_context *ctx)
549 char *staging_file_name;
552 struct wim_lookup_table_entry *old_lte, *new_lte;
555 DEBUG("Extracting resource to staging dir: inode %"PRIu64", "
556 "stream id %"PRIu32, inode->i_ino, stream_id);
560 wimlib_assert(old_lte == NULL ||
561 old_lte->resource_location != RESOURCE_IN_STAGING_FILE);
563 /* Create the staging file */
564 fd = create_staging_file(&staging_file_name, ctx);
568 /* Extract the stream to the staging file (possibly truncated) */
570 extract_size = min(wim_resource_size(old_lte), size);
571 ret = extract_wim_resource_to_fd(old_lte, fd, extract_size);
577 /* In the case of truncate() to more than the file length, extend the
578 * file with zeroes by calling ftruncate() on the underlying staging
580 if (ret == 0 && size > extract_size)
581 ret = ftruncate(fd, size);
583 /* Close the staging file descriptor and check for errors. If there's
584 * an error, unlink the staging file. */
585 if (ret != 0 || close(fd) != 0) {
591 goto out_delete_staging_file;
594 /* Now deal with the lookup table entries. We may be able to re-use the
595 * existing entry, but we may have to create a new one instead. */
597 if (old_lte && inode->i_nlink == old_lte->refcnt) {
598 /* The reference count of the existing lookup table entry is the
599 * same as the link count of the inode that contains the stream
600 * we're opening. Therefore, ALL the references to the lookup
601 * table entry correspond to the stream we're trying to extract,
602 * so the lookup table entry can be re-used. */
603 DEBUG("Re-using lookup table entry");
604 lookup_table_unlink(ctx->wim->lookup_table, old_lte);
608 /* There's an existing lookup table entry, but its
609 * reference count is greater than the link count for
610 * the inode containing a stream we're opening.
611 * Therefore, we need to split the lookup table entry.
613 wimlib_assert(old_lte->refcnt > inode->i_nlink);
614 DEBUG("Splitting lookup table entry "
615 "(inode->i_nlink = %u, old_lte->refcnt = %u)",
616 inode->i_nlink, old_lte->refcnt);
619 new_lte = new_lookup_table_entry();
622 goto out_delete_staging_file;
625 /* There may already be open file descriptors to this stream if
626 * it's previously been opened read-only, but just now we're
627 * opening it read-write. Identify those file descriptors and
628 * change their lookup table entry pointers to point to the new
629 * lookup table entry, and open staging file descriptors for
632 * At the same time, we need to count the number of these opened
633 * file descriptors to the new lookup table entry. If there's
634 * an old lookup table entry, this number needs to be subtracted
635 * from the fd's opened to the old entry. */
636 for (u16 i = 0, j = 0; j < inode->i_num_opened_fds; i++) {
637 struct wimfs_fd *fd = inode->i_fds[i];
639 if (fd->stream_id == stream_id) {
640 wimlib_assert(fd->f_lte == old_lte);
641 wimlib_assert(fd->staging_fd == -1);
643 new_lte->num_opened_fds++;
644 fd->staging_fd = open(staging_file_name, O_RDONLY);
645 if (fd->staging_fd == -1) {
647 goto out_revert_fd_changes;
653 DEBUG("%hu fd's were already opened to the file we extracted",
654 new_lte->num_opened_fds);
656 old_lte->num_opened_fds -= new_lte->num_opened_fds;
657 old_lte->refcnt -= inode->i_nlink;
661 new_lte->refcnt = inode->i_nlink;
662 new_lte->resource_location = RESOURCE_IN_STAGING_FILE;
663 new_lte->staging_file_name = staging_file_name;
664 new_lte->resource_entry.original_size = size;
666 lookup_table_insert_unhashed(ctx->wim->lookup_table, new_lte,
668 *retrieve_lte_pointer(new_lte) = new_lte;
671 out_revert_fd_changes:
672 for (u16 i = 0, j = 0; j < new_lte->num_opened_fds; i++) {
673 struct wimfs_fd *fd = inode->i_fds[i];
674 if (fd && fd->stream_id == stream_id && fd->f_lte == new_lte) {
676 if (fd->staging_fd != -1) {
677 close(fd->staging_fd);
683 free_lookup_table_entry(new_lte);
684 out_delete_staging_file:
685 unlink(staging_file_name);
686 FREE(staging_file_name);
691 * Creates a randomly named staging directory and saves its name in the
692 * filesystem context structure.
695 make_staging_dir(struct wimfs_context *ctx, const char *user_prefix)
697 static const size_t random_suffix_len = 10;
698 static const char *common_suffix = ".staging";
699 static const size_t common_suffix_len = 8;
701 char *staging_dir_name = NULL;
702 size_t staging_dir_name_len;
704 const char *wim_basename;
705 char *real_user_prefix = NULL;
709 real_user_prefix = realpath(user_prefix, NULL);
710 if (!real_user_prefix) {
711 ERROR_WITH_ERRNO("Could not resolve `%s'",
713 ret = WIMLIB_ERR_NOTDIR;
716 wim_basename = path_basename(ctx->wim->filename);
717 prefix_len = strlen(real_user_prefix) + 1 + strlen(wim_basename);
719 prefix_len = strlen(ctx->wim->filename);
722 staging_dir_name_len = prefix_len + common_suffix_len + random_suffix_len;
724 staging_dir_name = MALLOC(staging_dir_name_len + 1);
725 if (!staging_dir_name) {
726 ret = WIMLIB_ERR_NOMEM;
730 if (real_user_prefix)
731 sprintf(staging_dir_name, "%s/%s", real_user_prefix, wim_basename);
733 strcpy(staging_dir_name, ctx->wim->filename);
735 strcat(staging_dir_name, common_suffix);
737 randomize_char_array_with_alnum(staging_dir_name + prefix_len + common_suffix_len,
740 staging_dir_name[staging_dir_name_len] = '\0';
742 if (mkdir(staging_dir_name, 0700) != 0) {
743 ERROR_WITH_ERRNO("Failed to create temporary directory `%s'",
745 ret = WIMLIB_ERR_MKDIR;
750 FREE(real_user_prefix);
752 ctx->staging_dir_name = staging_dir_name;
753 ctx->staging_dir_name_len = staging_dir_name_len;
755 FREE(staging_dir_name);
761 remove_file_or_directory(const char *fpath, const struct stat *sb,
762 int typeflag, struct FTW *ftwbuf)
764 if (remove(fpath) == 0)
767 ERROR_WITH_ERRNO("Cannot remove `%s'", fpath);
768 return WIMLIB_ERR_DELETE_STAGING_DIR;
773 * Deletes the staging directory and all the files contained in it.
776 delete_staging_dir(struct wimfs_context *ctx)
779 ret = nftw(ctx->staging_dir_name, remove_file_or_directory,
781 FREE(ctx->staging_dir_name);
782 ctx->staging_dir_name = NULL;
787 inode_close_fds(struct wim_inode *inode)
789 u16 num_opened_fds = inode->i_num_opened_fds;
790 for (u16 i = 0, j = 0; j < num_opened_fds; i++) {
791 struct wimfs_fd *fd = inode->i_fds[i];
793 wimlib_assert(fd->f_inode == inode);
794 int ret = close_wimfs_fd(fd);
803 /* Overwrites the WIM file, with changes saved. */
805 rebuild_wim(struct wimfs_context *ctx, int write_flags,
806 wimlib_progress_func_t progress_func)
809 struct wim_lookup_table_entry *lte, *tmp;
810 WIMStruct *w = ctx->wim;
811 struct wim_image_metadata *imd = wim_get_current_image_metadata(ctx->wim);
813 DEBUG("Closing all staging file descriptors.");
814 image_for_each_unhashed_stream_safe(lte, tmp, imd) {
815 ret = inode_close_fds(lte->back_inode);
820 DEBUG("Freeing entries for zero-length streams");
821 image_for_each_unhashed_stream_safe(lte, tmp, imd) {
822 wimlib_assert(lte->unhashed);
823 if (wim_resource_size(lte) == 0) {
824 struct wim_lookup_table_entry **back_ptr;
825 back_ptr = retrieve_lte_pointer(lte);
827 list_del(<e->unhashed_list);
828 free_lookup_table_entry(lte);
832 xml_update_image_info(w, w->current_image);
833 ret = wimlib_overwrite(w, write_flags, 0, progress_func);
835 ERROR("Failed to commit changes to mounted WIM image");
839 /* Simple function that returns the concatenation of 2 strings. */
841 strcat_dup(const char *s1, const char *s2, size_t max_len)
843 size_t len = strlen(s1) + strlen(s2);
846 char *p = MALLOC(len + 1);
849 snprintf(p, len + 1, "%s%s", s1, s2);
854 set_message_queue_names(struct wimfs_context *ctx, const char *mount_dir)
856 static const char *u2d_prefix = "/wimlib-unmount-to-daemon-mq";
857 static const char *d2u_prefix = "/wimlib-daemon-to-unmount-mq";
862 dir_path = realpath(mount_dir, NULL);
864 ERROR_WITH_ERRNO("Failed to resolve path \"%s\"", mount_dir);
866 return WIMLIB_ERR_NOMEM;
868 return WIMLIB_ERR_NOTDIR;
871 for (p = dir_path; *p; p++)
875 ctx->unmount_to_daemon_mq_name = strcat_dup(u2d_prefix, dir_path,
877 if (!ctx->unmount_to_daemon_mq_name) {
878 ret = WIMLIB_ERR_NOMEM;
879 goto out_free_dir_path;
881 ctx->daemon_to_unmount_mq_name = strcat_dup(d2u_prefix, dir_path,
883 if (!ctx->daemon_to_unmount_mq_name) {
884 ret = WIMLIB_ERR_NOMEM;
885 goto out_free_unmount_to_daemon_mq_name;
889 goto out_free_dir_path;
890 out_free_unmount_to_daemon_mq_name:
891 FREE(ctx->unmount_to_daemon_mq_name);
892 ctx->unmount_to_daemon_mq_name = NULL;
899 free_message_queue_names(struct wimfs_context *ctx)
901 FREE(ctx->unmount_to_daemon_mq_name);
902 FREE(ctx->daemon_to_unmount_mq_name);
903 ctx->unmount_to_daemon_mq_name = NULL;
904 ctx->daemon_to_unmount_mq_name = NULL;
908 * Opens two POSIX message queue: one for sending messages from the unmount
909 * process to the daemon process, and one to go the other way. The names of the
910 * message queues, which must be system-wide unique, are be based on the mount
913 * @daemon specifies whether the calling process is the filesystem daemon or the
917 open_message_queues(struct wimfs_context *ctx, bool daemon)
919 int unmount_to_daemon_mq_flags = O_WRONLY | O_CREAT;
920 int daemon_to_unmount_mq_flags = O_RDONLY | O_CREAT;
926 swap(unmount_to_daemon_mq_flags, daemon_to_unmount_mq_flags);
932 orig_umask = umask(0000);
933 DEBUG("Opening message queue \"%s\"", ctx->unmount_to_daemon_mq_name);
934 ctx->unmount_to_daemon_mq = mq_open(ctx->unmount_to_daemon_mq_name,
935 unmount_to_daemon_mq_flags, mode, NULL);
937 if (ctx->unmount_to_daemon_mq == (mqd_t)-1) {
938 ERROR_WITH_ERRNO("mq_open()");
939 ret = WIMLIB_ERR_MQUEUE;
943 DEBUG("Opening message queue \"%s\"", ctx->daemon_to_unmount_mq_name);
944 ctx->daemon_to_unmount_mq = mq_open(ctx->daemon_to_unmount_mq_name,
945 daemon_to_unmount_mq_flags, mode, NULL);
947 if (ctx->daemon_to_unmount_mq == (mqd_t)-1) {
948 ERROR_WITH_ERRNO("mq_open()");
949 mq_close(ctx->unmount_to_daemon_mq);
950 mq_unlink(ctx->unmount_to_daemon_mq_name);
951 ctx->unmount_to_daemon_mq = (mqd_t)-1;
952 ret = WIMLIB_ERR_MQUEUE;
961 /* Try to determine the maximum message size of a message queue. The return
962 * value is the maximum message size, or a guess of 8192 bytes if it cannot be
965 mq_get_msgsize(mqd_t mq)
967 static const char *msgsize_max_file = "/proc/sys/fs/mqueue/msgsize_max";
972 if (mq_getattr(mq, &attr) == 0) {
973 msgsize = attr.mq_msgsize;
975 ERROR_WITH_ERRNO("mq_getattr()");
976 ERROR("Attempting to read %s", msgsize_max_file);
977 fp = fopen(msgsize_max_file, "rb");
979 if (fscanf(fp, "%ld", &msgsize) != 1) {
980 ERROR("Assuming message size of 8192");
985 ERROR_WITH_ERRNO("Failed to open the file `%s'",
987 ERROR("Assuming message size of 8192");
995 get_mailbox(mqd_t mq, long needed_msgsize, long *msgsize_ret,
1001 msgsize = mq_get_msgsize(mq);
1003 if (msgsize < needed_msgsize) {
1004 ERROR("Message queue max size must be at least %ld!",
1006 return WIMLIB_ERR_MQUEUE;
1009 mailbox = MALLOC(msgsize);
1011 ERROR("Failed to allocate %ld bytes for mailbox", msgsize);
1012 return WIMLIB_ERR_NOMEM;
1014 *msgsize_ret = msgsize;
1015 *mailbox_ret = mailbox;
1020 unlink_message_queues(struct wimfs_context *ctx)
1022 mq_unlink(ctx->unmount_to_daemon_mq_name);
1023 mq_unlink(ctx->daemon_to_unmount_mq_name);
1026 /* Closes the message queues, which are allocated in static variables */
1028 close_message_queues(struct wimfs_context *ctx)
1030 DEBUG("Closing message queues");
1031 mq_close(ctx->unmount_to_daemon_mq);
1032 ctx->unmount_to_daemon_mq = (mqd_t)(-1);
1033 mq_close(ctx->daemon_to_unmount_mq);
1034 ctx->daemon_to_unmount_mq = (mqd_t)(-1);
1035 unlink_message_queues(ctx);
1039 struct unmount_msg_hdr {
1044 } _packed_attribute;
1046 struct msg_unmount_request {
1047 struct unmount_msg_hdr hdr;
1049 u8 want_progress_messages;
1050 } _packed_attribute;
1052 struct msg_daemon_info {
1053 struct unmount_msg_hdr hdr;
1056 } _packed_attribute;
1058 struct msg_unmount_finished {
1059 struct unmount_msg_hdr hdr;
1061 } _packed_attribute;
1063 struct msg_write_streams_progress {
1064 struct unmount_msg_hdr hdr;
1065 union wimlib_progress_info info;
1066 } _packed_attribute;
1069 MSG_TYPE_UNMOUNT_REQUEST,
1070 MSG_TYPE_DAEMON_INFO,
1071 MSG_TYPE_WRITE_STREAMS_PROGRESS,
1072 MSG_TYPE_UNMOUNT_FINISHED,
1076 struct msg_handler_context_hdr {
1077 int timeout_seconds;
1080 struct unmount_msg_handler_context {
1081 struct msg_handler_context_hdr hdr;
1085 wimlib_progress_func_t progress_func;
1088 struct daemon_msg_handler_context {
1089 struct msg_handler_context_hdr hdr;
1090 struct wimfs_context *wimfs_ctx;
1094 send_unmount_request_msg(mqd_t mq, int unmount_flags, u8 want_progress_messages)
1096 DEBUG("Sending unmount request msg");
1097 struct msg_unmount_request msg = {
1099 .min_version = WIMLIB_MAKEVERSION(1, 2, 1),
1100 .cur_version = WIMLIB_VERSION_CODE,
1101 .msg_type = MSG_TYPE_UNMOUNT_REQUEST,
1102 .msg_size = sizeof(msg),
1104 .unmount_flags = unmount_flags,
1105 .want_progress_messages = want_progress_messages,
1108 if (mq_send(mq, (void*)&msg, sizeof(msg), 1)) {
1109 ERROR_WITH_ERRNO("Failed to communicate with filesystem daemon");
1110 return WIMLIB_ERR_MQUEUE;
1116 send_daemon_info_msg(mqd_t mq, pid_t pid, int mount_flags)
1118 DEBUG("Sending daemon info msg (pid = %d, mount_flags=%x)",
1121 struct msg_daemon_info msg = {
1123 .min_version = WIMLIB_MAKEVERSION(1, 2, 1),
1124 .cur_version = WIMLIB_VERSION_CODE,
1125 .msg_type = MSG_TYPE_DAEMON_INFO,
1126 .msg_size = sizeof(msg),
1129 .mount_flags = mount_flags,
1131 if (mq_send(mq, (void*)&msg, sizeof(msg), 1)) {
1132 ERROR_WITH_ERRNO("Failed to send daemon info to unmount process");
1133 return WIMLIB_ERR_MQUEUE;
1139 send_unmount_finished_msg(mqd_t mq, int status)
1141 DEBUG("Sending unmount finished msg");
1142 struct msg_unmount_finished msg = {
1144 .min_version = WIMLIB_MAKEVERSION(1, 2, 1),
1145 .cur_version = WIMLIB_VERSION_CODE,
1146 .msg_type = MSG_TYPE_UNMOUNT_FINISHED,
1147 .msg_size = sizeof(msg),
1151 if (mq_send(mq, (void*)&msg, sizeof(msg), 1))
1152 ERROR_WITH_ERRNO("Failed to send status to unmount process");
1156 unmount_progress_func(enum wimlib_progress_msg msg,
1157 const union wimlib_progress_info *info)
1159 if (msg == WIMLIB_PROGRESS_MSG_WRITE_STREAMS) {
1160 struct msg_write_streams_progress msg = {
1162 .min_version = WIMLIB_MAKEVERSION(1, 2, 1),
1163 .cur_version = WIMLIB_VERSION_CODE,
1164 .msg_type = MSG_TYPE_WRITE_STREAMS_PROGRESS,
1165 .msg_size = sizeof(msg),
1169 if (mq_send(wimfs_get_context()->daemon_to_unmount_mq,
1170 (void*)&msg, sizeof(msg), 1))
1172 ERROR_WITH_ERRNO("Failed to send progress information "
1173 "to unmount process");
1180 msg_unmount_request_handler(const void *_msg, void *_handler_ctx)
1182 const struct msg_unmount_request *msg = _msg;
1183 struct daemon_msg_handler_context *handler_ctx = _handler_ctx;
1184 struct wimfs_context *wimfs_ctx;
1188 wimlib_progress_func_t progress_func;
1190 DEBUG("Handling unmount request msg");
1192 wimfs_ctx = handler_ctx->wimfs_ctx;
1193 if (msg->hdr.msg_size < sizeof(*msg)) {
1194 status = WIMLIB_ERR_INVALID_UNMOUNT_MESSAGE;
1198 unmount_flags = msg->unmount_flags;
1199 if (msg->want_progress_messages)
1200 progress_func = unmount_progress_func;
1202 progress_func = NULL;
1204 ret = send_daemon_info_msg(wimfs_ctx->daemon_to_unmount_mq, getpid(),
1205 wimfs_ctx->mount_flags);
1211 if (wimfs_ctx->mount_flags & WIMLIB_MOUNT_FLAG_READWRITE) {
1212 if (unmount_flags & WIMLIB_UNMOUNT_FLAG_COMMIT) {
1213 int write_flags = 0;
1214 if (unmount_flags & WIMLIB_UNMOUNT_FLAG_CHECK_INTEGRITY)
1215 write_flags |= WIMLIB_WRITE_FLAG_CHECK_INTEGRITY;
1216 if (unmount_flags & WIMLIB_UNMOUNT_FLAG_REBUILD)
1217 write_flags |= WIMLIB_WRITE_FLAG_REBUILD;
1218 if (unmount_flags & WIMLIB_UNMOUNT_FLAG_RECOMPRESS)
1219 write_flags |= WIMLIB_WRITE_FLAG_RECOMPRESS;
1220 status = rebuild_wim(wimfs_ctx, write_flags,
1224 DEBUG("Read-only mount");
1229 if (wimfs_ctx->mount_flags & WIMLIB_MOUNT_FLAG_READWRITE) {
1230 ret = delete_staging_dir(wimfs_ctx);
1232 ERROR("Failed to delete the staging directory");
1237 wimfs_ctx->status = status;
1238 wimfs_ctx->have_status = true;
1239 return MSG_BREAK_LOOP;
1243 msg_daemon_info_handler(const void *_msg, void *_handler_ctx)
1245 const struct msg_daemon_info *msg = _msg;
1246 struct unmount_msg_handler_context *handler_ctx = _handler_ctx;
1248 DEBUG("Handling daemon info msg");
1249 if (msg->hdr.msg_size < sizeof(*msg))
1250 return WIMLIB_ERR_INVALID_UNMOUNT_MESSAGE;
1251 handler_ctx->daemon_pid = msg->daemon_pid;
1252 handler_ctx->mount_flags = msg->mount_flags;
1253 handler_ctx->hdr.timeout_seconds = 1;
1254 DEBUG("pid of daemon is %d; mount flags were %#x",
1255 handler_ctx->daemon_pid,
1256 handler_ctx->mount_flags);
1261 msg_write_streams_progress_handler(const void *_msg, void *_handler_ctx)
1263 const struct msg_write_streams_progress *msg = _msg;
1264 struct unmount_msg_handler_context *handler_ctx = _handler_ctx;
1266 if (msg->hdr.msg_size < sizeof(*msg))
1267 return WIMLIB_ERR_INVALID_UNMOUNT_MESSAGE;
1268 if (handler_ctx->progress_func) {
1269 handler_ctx->progress_func(WIMLIB_PROGRESS_MSG_WRITE_STREAMS,
1276 msg_unmount_finished_handler(const void *_msg, void *_handler_ctx)
1278 const struct msg_unmount_finished *msg = _msg;
1279 struct unmount_msg_handler_context *handler_ctx = _handler_ctx;
1281 DEBUG("Handling unmount finished message");
1282 if (msg->hdr.msg_size < sizeof(*msg))
1283 return WIMLIB_ERR_INVALID_UNMOUNT_MESSAGE;
1284 handler_ctx->status = msg->status;
1285 DEBUG("status is %d", handler_ctx->status);
1286 return MSG_BREAK_LOOP;
1290 unmount_timed_out_cb(void *_handler_ctx)
1292 struct unmount_msg_handler_context *handler_ctx = _handler_ctx;
1294 if (handler_ctx->daemon_pid == 0) {
1297 kill(handler_ctx->daemon_pid, 0);
1298 if (errno == ESRCH) {
1301 DEBUG("Filesystem daemon is still alive... "
1302 "Waiting another %d seconds\n",
1303 handler_ctx->hdr.timeout_seconds);
1308 ERROR("The filesystem daemon has crashed! Changes to the "
1309 "WIM may not have been commited.");
1310 return WIMLIB_ERR_FILESYSTEM_DAEMON_CRASHED;
1314 daemon_timed_out_cb(void *_handler_ctx)
1316 ERROR("Timed out waiting for unmount request! "
1317 "Changes to the mounted WIM will not be committed.");
1318 return WIMLIB_ERR_TIMEOUT;
1321 typedef int (*msg_handler_t)(const void *_msg, void *_handler_ctx);
1323 struct msg_handler_callbacks {
1324 int (*timed_out)(void * _handler_ctx);
1325 msg_handler_t msg_handlers[MSG_TYPE_MAX];
1328 static const struct msg_handler_callbacks unmount_msg_handler_callbacks = {
1329 .timed_out = unmount_timed_out_cb,
1331 [MSG_TYPE_DAEMON_INFO] = msg_daemon_info_handler,
1332 [MSG_TYPE_WRITE_STREAMS_PROGRESS] = msg_write_streams_progress_handler,
1333 [MSG_TYPE_UNMOUNT_FINISHED] = msg_unmount_finished_handler,
1337 static const struct msg_handler_callbacks daemon_msg_handler_callbacks = {
1338 .timed_out = daemon_timed_out_cb,
1340 [MSG_TYPE_UNMOUNT_REQUEST] = msg_unmount_request_handler,
1345 receive_message(mqd_t mq,
1346 struct msg_handler_context_hdr *handler_ctx,
1347 const msg_handler_t msg_handlers[],
1348 long mailbox_size, void *mailbox)
1351 struct timespec timeout;
1352 ssize_t bytes_received;
1353 struct unmount_msg_hdr *hdr;
1356 gettimeofday(&now, NULL);
1357 timeout.tv_sec = now.tv_sec + handler_ctx->timeout_seconds;
1358 timeout.tv_nsec = now.tv_usec * 1000;
1360 bytes_received = mq_timedreceive(mq, mailbox,
1361 mailbox_size, NULL, &timeout);
1363 if (bytes_received == -1) {
1364 if (errno == ETIMEDOUT) {
1365 ret = WIMLIB_ERR_TIMEOUT;
1367 ERROR_WITH_ERRNO("mq_timedreceive()");
1368 ret = WIMLIB_ERR_MQUEUE;
1370 } else if (bytes_received < sizeof(*hdr) ||
1371 bytes_received != hdr->msg_size) {
1372 ret = WIMLIB_ERR_INVALID_UNMOUNT_MESSAGE;
1373 } else if (WIMLIB_VERSION_CODE < hdr->min_version) {
1374 /*ERROR("Cannot understand the received message. "*/
1375 /*"Please upgrade wimlib to at least v%d.%d.%d",*/
1376 /*WIMLIB_GET_MAJOR_VERSION(hdr->min_version),*/
1377 /*WIMLIB_GET_MINOR_VERSION(hdr->min_version),*/
1378 /*WIMLIB_GET_PATCH_VERSION(hdr->min_version));*/
1379 ret = MSG_VERSION_TOO_HIGH;
1380 } else if (hdr->msg_type >= MSG_TYPE_MAX) {
1381 ret = WIMLIB_ERR_INVALID_UNMOUNT_MESSAGE;
1382 } else if (msg_handlers[hdr->msg_type] == NULL) {
1383 ret = WIMLIB_ERR_INVALID_UNMOUNT_MESSAGE;
1385 ret = msg_handlers[hdr->msg_type](mailbox, handler_ctx);
1391 message_loop(mqd_t mq,
1392 const struct msg_handler_callbacks *callbacks,
1393 struct msg_handler_context_hdr *handler_ctx)
1395 static const size_t MAX_MSG_SIZE = 512;
1400 DEBUG("Entering message loop");
1402 ret = get_mailbox(mq, MAX_MSG_SIZE, &msgsize, &mailbox);
1406 ret = receive_message(mq, handler_ctx,
1407 callbacks->msg_handlers,
1409 if (ret == 0 || ret == MSG_VERSION_TOO_HIGH) {
1411 } else if (ret == MSG_BREAK_LOOP) {
1414 } else if (ret == WIMLIB_ERR_TIMEOUT) {
1415 if (callbacks->timed_out)
1416 ret = callbacks->timed_out(handler_ctx);
1422 ERROR_WITH_ERRNO("Error communicating with "
1423 "filesystem daemon");
1428 DEBUG("Exiting message loop");
1432 /* Execute `fusermount -u', which is installed setuid root, to unmount the WIM.
1434 * FUSE does not yet implement synchronous unmounts. This means that fusermount
1435 * -u will return before the filesystem daemon returns from wimfs_destroy().
1436 * This is partly what we want, because we need to send a message from this
1437 * process to the filesystem daemon telling whether --commit was specified or
1438 * not. However, after that, the unmount process must wait for the filesystem
1439 * daemon to finish writing the WIM file.
1442 execute_fusermount(const char *dir, bool lazy)
1450 ERROR_WITH_ERRNO("Failed to fork()");
1451 return WIMLIB_ERR_FORK;
1457 *argp++ = "fusermount";
1461 *argp++ = (char*)dir;
1463 execvp("fusermount", argv);
1464 ERROR_WITH_ERRNO("Failed to execute `fusermount'");
1465 exit(WIMLIB_ERR_FUSERMOUNT);
1469 ret = waitpid(pid, &status, 0);
1471 ERROR_WITH_ERRNO("Failed to wait for fusermount process to "
1473 return WIMLIB_ERR_FUSERMOUNT;
1476 if (!WIFEXITED(status)) {
1477 ERROR("'fusermount' did not terminate normally!");
1478 return WIMLIB_ERR_FUSERMOUNT;
1481 status = WEXITSTATUS(status);
1486 if (status != WIMLIB_ERR_FUSERMOUNT)
1487 return WIMLIB_ERR_FUSERMOUNT;
1489 /* Try again, but with the `umount' program. This is required on other
1490 * FUSE implementations such as FreeBSD's that do not have a
1491 * `fusermount' program. */
1492 ERROR("Falling back to 'umount'. Note: you may need to be "
1493 "root for this to work");
1496 ERROR_WITH_ERRNO("Failed to fork()");
1497 return WIMLIB_ERR_FORK;
1506 *argp++ = (char*)dir;
1508 execvp("umount", argv);
1509 ERROR_WITH_ERRNO("Failed to execute `umount'");
1510 exit(WIMLIB_ERR_FUSERMOUNT);
1514 ret = waitpid(pid, &status, 0);
1516 ERROR_WITH_ERRNO("Failed to wait for `umount' process to "
1518 return WIMLIB_ERR_FUSERMOUNT;
1521 ERROR("`umount' did not successfully complete");
1522 return WIMLIB_ERR_FUSERMOUNT;
1528 wimfs_chmod(const char *path, mode_t mask)
1530 struct wim_dentry *dentry;
1531 struct wimfs_context *ctx = wimfs_get_context();
1534 if (!(ctx->mount_flags & WIMLIB_MOUNT_FLAG_UNIX_DATA))
1537 ret = lookup_resource(ctx->wim, path, LOOKUP_FLAG_DIRECTORY_OK,
1538 &dentry, NULL, NULL);
1542 ret = inode_set_unix_data(dentry->d_inode, ctx->default_uid,
1543 ctx->default_gid, mask,
1544 ctx->wim->lookup_table, UNIX_DATA_MODE);
1545 return ret ? -ENOMEM : 0;
1549 wimfs_chown(const char *path, uid_t uid, gid_t gid)
1551 struct wim_dentry *dentry;
1552 struct wimfs_context *ctx = wimfs_get_context();
1555 if (!(ctx->mount_flags & WIMLIB_MOUNT_FLAG_UNIX_DATA))
1558 ret = lookup_resource(ctx->wim, path, LOOKUP_FLAG_DIRECTORY_OK,
1559 &dentry, NULL, NULL);
1563 ret = inode_set_unix_data(dentry->d_inode, uid, gid,
1564 inode_default_unix_mode(dentry->d_inode),
1565 ctx->wim->lookup_table,
1566 UNIX_DATA_UID | UNIX_DATA_GID);
1567 return ret ? -ENOMEM : 0;
1570 /* Called when the filesystem is unmounted. */
1572 wimfs_destroy(void *p)
1574 struct wimfs_context *wimfs_ctx = wimfs_get_context();
1575 if (open_message_queues(wimfs_ctx, true) == 0) {
1576 struct daemon_msg_handler_context handler_ctx = {
1578 .timeout_seconds = 5,
1580 .wimfs_ctx = wimfs_ctx,
1582 message_loop(wimfs_ctx->unmount_to_daemon_mq,
1583 &daemon_msg_handler_callbacks,
1589 wimfs_fgetattr(const char *path, struct stat *stbuf,
1590 struct fuse_file_info *fi)
1592 struct wimfs_fd *fd = (struct wimfs_fd*)(uintptr_t)fi->fh;
1593 return inode_to_stbuf(fd->f_inode, fd->f_lte, stbuf);
1597 wimfs_ftruncate(const char *path, off_t size, struct fuse_file_info *fi)
1599 struct wimfs_fd *fd = (struct wimfs_fd*)(uintptr_t)fi->fh;
1600 int ret = ftruncate(fd->staging_fd, size);
1603 touch_inode(fd->f_inode);
1604 fd->f_lte->resource_entry.original_size = size;
1609 * Fills in a `struct stat' that corresponds to a file or directory in the WIM.
1612 wimfs_getattr(const char *path, struct stat *stbuf)
1614 struct wim_dentry *dentry;
1615 struct wim_lookup_table_entry *lte;
1617 struct wimfs_context *ctx = wimfs_get_context();
1619 ret = lookup_resource(ctx->wim, path,
1620 get_lookup_flags(ctx) | LOOKUP_FLAG_DIRECTORY_OK,
1621 &dentry, <e, NULL);
1624 return inode_to_stbuf(dentry->d_inode, lte, stbuf);
1628 /* Read an alternate data stream through the XATTR interface, or get its size */
1630 wimfs_getxattr(const char *path, const char *name, char *value,
1634 struct wim_inode *inode;
1635 struct wim_ads_entry *ads_entry;
1637 struct wim_lookup_table_entry *lte;
1638 struct wimfs_context *ctx = wimfs_get_context();
1640 if (!(ctx->mount_flags & WIMLIB_MOUNT_FLAG_STREAM_INTERFACE_XATTR))
1643 if (strlen(name) < 5 || memcmp(name, "user.", 5) != 0)
1647 inode = wim_pathname_to_inode(ctx->wim, path);
1651 ads_entry = inode_get_ads_entry(inode, name, NULL);
1655 lte = ads_entry->lte;
1656 res_size = wim_resource_size(lte);
1661 if (res_size > size)
1664 ret = read_full_resource_into_buf(lte, value);
1672 /* Create a hard link */
1674 wimfs_link(const char *to, const char *from)
1676 struct wim_dentry *from_dentry, *from_dentry_parent;
1677 const char *link_name;
1678 struct wim_inode *inode;
1679 WIMStruct *w = wimfs_get_WIMStruct();
1682 inode = wim_pathname_to_inode(w, to);
1686 if (inode->i_attributes & (FILE_ATTRIBUTE_DIRECTORY |
1687 FILE_ATTRIBUTE_REPARSE_POINT))
1690 from_dentry_parent = get_parent_dentry(w, from);
1691 if (!from_dentry_parent)
1693 if (!dentry_is_directory(from_dentry_parent))
1696 link_name = path_basename(from);
1697 if (get_dentry_child_with_name(from_dentry_parent, link_name))
1700 ret = new_dentry(link_name, &from_dentry);
1705 inode_ref_streams(inode);
1706 from_dentry->d_inode = inode;
1707 inode_add_dentry(from_dentry, inode);
1708 dentry_add_child(from_dentry_parent, from_dentry);
1714 wimfs_listxattr(const char *path, char *list, size_t size)
1717 struct wim_inode *inode;
1718 struct wimfs_context *ctx = wimfs_get_context();
1721 bool size_only = (size == 0);
1723 if (!(ctx->mount_flags & WIMLIB_MOUNT_FLAG_STREAM_INTERFACE_XATTR))
1726 /* List alternate data streams, or get the list size */
1728 inode = wim_pathname_to_inode(ctx->wim, path);
1733 for (i = 0; i < inode->i_num_ads; i++) {
1734 char *stream_name_mbs;
1735 size_t stream_name_mbs_nbytes;
1738 ret = utf16le_to_tstr(inode->i_ads_entries[i].stream_name,
1739 inode->i_ads_entries[i].stream_name_nbytes,
1741 &stream_name_mbs_nbytes);
1745 needed_size = stream_name_mbs_nbytes + 6;
1747 if (needed_size > size) {
1748 FREE(stream_name_mbs);
1751 sprintf(p, "user.%s", stream_name_mbs);
1752 size -= needed_size;
1755 FREE(stream_name_mbs);
1762 /* Create a directory in the WIM image. */
1764 wimfs_mkdir(const char *path, mode_t mode)
1766 return create_dentry(fuse_get_context(), path, mode | S_IFDIR,
1767 FILE_ATTRIBUTE_DIRECTORY, NULL);
1770 /* Create a regular file or alternate data stream in the WIM image. */
1772 wimfs_mknod(const char *path, mode_t mode, dev_t rdev)
1774 const char *stream_name;
1775 struct fuse_context *fuse_ctx = fuse_get_context();
1776 struct wimfs_context *wimfs_ctx = WIMFS_CTX(fuse_ctx);
1781 if ((wimfs_ctx->mount_flags & WIMLIB_MOUNT_FLAG_STREAM_INTERFACE_WINDOWS)
1782 && (stream_name = path_stream_name(path))) {
1783 /* Make an alternate data stream */
1784 struct wim_ads_entry *new_entry;
1785 struct wim_inode *inode;
1787 char *p = (char*)stream_name - 1;
1788 wimlib_assert(*p == ':');
1791 inode = wim_pathname_to_inode(wimfs_ctx->wim, path);
1794 if (inode->i_attributes & FILE_ATTRIBUTE_REPARSE_POINT)
1796 if (inode_get_ads_entry(inode, stream_name, NULL))
1798 new_entry = inode_add_ads(inode, stream_name);
1803 /* Make a normal file (not an alternate data stream) */
1804 return create_dentry(fuse_ctx, path, mode | S_IFREG,
1805 FILE_ATTRIBUTE_NORMAL, NULL);
1811 wimfs_open(const char *path, struct fuse_file_info *fi)
1813 struct wim_dentry *dentry;
1814 struct wim_lookup_table_entry *lte;
1816 struct wimfs_fd *fd;
1817 struct wim_inode *inode;
1820 struct wimfs_context *ctx = wimfs_get_context();
1821 struct wim_lookup_table_entry **back_ptr;
1823 ret = lookup_resource(ctx->wim, path, get_lookup_flags(ctx),
1824 &dentry, <e, &stream_idx);
1828 inode = dentry->d_inode;
1830 if (stream_idx == 0) {
1832 back_ptr = &inode->i_lte;
1834 stream_id = inode->i_ads_entries[stream_idx - 1].stream_id;
1835 back_ptr = &inode->i_ads_entries[stream_idx - 1].lte;
1838 /* The file resource may be in the staging directory (read-write mounts
1839 * only) or in the WIM. If it's in the staging directory, we need to
1840 * open a native file descriptor for the corresponding file. Otherwise,
1841 * we can read the file resource directly from the WIM file if we are
1842 * opening it read-only, but we need to extract the resource to the
1843 * staging directory if we are opening it writable. */
1845 if (flags_writable(fi->flags) &&
1846 (!lte || lte->resource_location != RESOURCE_IN_STAGING_FILE)) {
1847 u64 size = (lte) ? wim_resource_size(lte) : 0;
1848 ret = extract_resource_to_staging_dir(inode, stream_id,
1855 ret = alloc_wimfs_fd(inode, stream_id, lte, &fd,
1856 wimfs_ctx_readonly(ctx));
1860 if (lte && lte->resource_location == RESOURCE_IN_STAGING_FILE) {
1861 fd->staging_fd = open(lte->staging_file_name, fi->flags);
1862 if (fd->staging_fd == -1) {
1863 int errno_save = errno;
1868 fi->fh = (uintptr_t)fd;
1872 /* Opens a directory. */
1874 wimfs_opendir(const char *path, struct fuse_file_info *fi)
1876 struct wim_inode *inode;
1878 struct wimfs_fd *fd = NULL;
1879 struct wimfs_context *ctx = wimfs_get_context();
1880 WIMStruct *w = ctx->wim;
1882 inode = wim_pathname_to_inode(w, path);
1885 if (!inode_is_directory(inode))
1887 ret = alloc_wimfs_fd(inode, 0, NULL, &fd, wimfs_ctx_readonly(ctx));
1888 fi->fh = (uintptr_t)fd;
1894 * Read data from a file in the WIM or in the staging directory.
1897 wimfs_read(const char *path, char *buf, size_t size,
1898 off_t offset, struct fuse_file_info *fi)
1900 struct wimfs_fd *fd = (struct wimfs_fd*)(uintptr_t)fi->fh;
1911 res_size = wim_resource_size(fd->f_lte);
1915 if (offset > res_size)
1918 size = min(size, res_size - offset);
1922 switch (fd->f_lte->resource_location) {
1923 case RESOURCE_IN_STAGING_FILE:
1924 ret = full_pread(fd->staging_fd, buf, size, offset);
1928 case RESOURCE_IN_WIM:
1929 if (read_partial_wim_resource_into_buf(fd->f_lte, size,
1935 case RESOURCE_IN_ATTACHED_BUFFER:
1936 memcpy(buf, fd->f_lte->attached_buffer + offset, size);
1940 ERROR("Invalid resource location");
1947 struct fill_params {
1949 fuse_fill_dir_t filler;
1953 dentry_fuse_fill(struct wim_dentry *dentry, void *arg)
1955 struct fill_params *fill_params = arg;
1957 char *file_name_mbs;
1958 size_t file_name_mbs_nbytes;
1961 ret = utf16le_to_tstr(dentry->file_name,
1962 dentry->file_name_nbytes,
1964 &file_name_mbs_nbytes);
1968 ret = fill_params->filler(fill_params->buf, file_name_mbs, NULL, 0);
1969 FREE(file_name_mbs);
1973 /* Fills in the entries of the directory specified by @path using the
1974 * FUSE-provided function @filler. */
1976 wimfs_readdir(const char *path, void *buf, fuse_fill_dir_t filler,
1977 off_t offset, struct fuse_file_info *fi)
1979 struct wimfs_fd *fd = (struct wimfs_fd*)(uintptr_t)fi->fh;
1980 struct wim_inode *inode;
1985 inode = fd->f_inode;
1987 struct fill_params fill_params = {
1992 filler(buf, ".", NULL, 0);
1993 filler(buf, "..", NULL, 0);
1995 return for_dentry_in_rbtree(inode->i_children.rb_node,
1996 dentry_fuse_fill, &fill_params);
2001 wimfs_readlink(const char *path, char *buf, size_t buf_len)
2003 struct wimfs_context *ctx = wimfs_get_context();
2004 struct wim_inode *inode = wim_pathname_to_inode(ctx->wim, path);
2008 if (!inode_is_symlink(inode))
2011 return -ENAMETOOLONG;
2012 ret = wim_inode_readlink(inode, buf, buf_len - 1);
2014 wimlib_assert(ret <= buf_len - 1);
2017 } else if (ret == -ENAMETOOLONG) {
2018 buf[buf_len - 1] = '\0';
2025 wimfs_release(const char *path, struct fuse_file_info *fi)
2027 struct wimfs_fd *fd = (struct wimfs_fd*)(uintptr_t)fi->fh;
2028 return close_wimfs_fd(fd);
2031 /* Close a directory */
2033 wimfs_releasedir(const char *path, struct fuse_file_info *fi)
2035 struct wimfs_fd *fd = (struct wimfs_fd*)(uintptr_t)fi->fh;
2036 return close_wimfs_fd(fd);
2040 /* Remove an alternate data stream through the XATTR interface */
2042 wimfs_removexattr(const char *path, const char *name)
2044 struct wim_inode *inode;
2045 struct wim_ads_entry *ads_entry;
2047 struct wimfs_context *ctx = wimfs_get_context();
2049 if (!(ctx->mount_flags & WIMLIB_MOUNT_FLAG_STREAM_INTERFACE_XATTR))
2052 if (strlen(name) < 5 || memcmp(name, "user.", 5) != 0)
2056 inode = wim_pathname_to_inode(ctx->wim, path);
2060 ads_entry = inode_get_ads_entry(inode, name, &ads_idx);
2063 inode_remove_ads(inode, ads_idx, ctx->wim->lookup_table);
2068 /* Renames a file or directory. See rename (3) */
2070 wimfs_rename(const char *from, const char *to)
2072 return rename_wim_path(wimfs_get_WIMStruct(), from, to);
2075 /* Remove a directory */
2077 wimfs_rmdir(const char *path)
2079 struct wim_dentry *dentry;
2080 WIMStruct *w = wimfs_get_WIMStruct();
2082 dentry = get_dentry(w, path);
2086 if (!dentry_is_directory(dentry))
2089 if (dentry_has_children(dentry))
2092 remove_dentry(dentry, w->lookup_table);
2097 /* Write an alternate data stream through the XATTR interface */
2099 wimfs_setxattr(const char *path, const char *name,
2100 const char *value, size_t size, int flags)
2102 struct wim_ads_entry *existing_ads_entry;
2103 struct wim_inode *inode;
2105 struct wimfs_context *ctx = wimfs_get_context();
2108 if (!(ctx->mount_flags & WIMLIB_MOUNT_FLAG_STREAM_INTERFACE_XATTR))
2111 if (strlen(name) < 5 || memcmp(name, "user.", 5) != 0)
2115 inode = wim_pathname_to_inode(ctx->wim, path);
2119 existing_ads_entry = inode_get_ads_entry(inode, name, &ads_idx);
2120 if (existing_ads_entry) {
2121 if (flags & XATTR_CREATE)
2124 if (flags & XATTR_REPLACE)
2128 ret = inode_add_ads_with_data(inode, name, value,
2129 size, ctx->wim->lookup_table);
2131 if (existing_ads_entry)
2132 inode_remove_ads(inode, ads_idx, ctx->wim->lookup_table);
2141 wimfs_symlink(const char *to, const char *from)
2143 struct fuse_context *fuse_ctx = fuse_get_context();
2144 struct wimfs_context *wimfs_ctx = WIMFS_CTX(fuse_ctx);
2145 struct wim_dentry *dentry;
2148 ret = create_dentry(fuse_ctx, from, S_IFLNK | 0777,
2149 FILE_ATTRIBUTE_REPARSE_POINT, &dentry);
2151 dentry->d_inode->i_reparse_tag = WIM_IO_REPARSE_TAG_SYMLINK;
2152 ret = wim_inode_set_symlink(dentry->d_inode, to,
2153 wimfs_ctx->wim->lookup_table);
2155 remove_dentry(dentry, wimfs_ctx->wim->lookup_table);
2156 if (ret == WIMLIB_ERR_NOMEM)
2166 /* Reduce the size of a file */
2168 wimfs_truncate(const char *path, off_t size)
2170 struct wim_dentry *dentry;
2171 struct wim_lookup_table_entry *lte;
2175 struct wim_inode *inode;
2176 struct wimfs_context *ctx = wimfs_get_context();
2178 ret = lookup_resource(ctx->wim, path, get_lookup_flags(ctx),
2179 &dentry, <e, &stream_idx);
2184 if (lte == NULL && size == 0)
2187 if (lte->resource_location == RESOURCE_IN_STAGING_FILE) {
2188 ret = truncate(lte->staging_file_name, size);
2192 lte->resource_entry.original_size = size;
2194 /* File in WIM. Extract it to the staging directory, but only
2195 * the first @size bytes of it. */
2196 struct wim_lookup_table_entry **back_ptr;
2198 inode = dentry->d_inode;
2199 if (stream_idx == 0) {
2201 back_ptr = &inode->i_lte;
2203 stream_id = inode->i_ads_entries[stream_idx - 1].stream_id;
2204 back_ptr = &inode->i_ads_entries[stream_idx - 1].lte;
2206 ret = extract_resource_to_staging_dir(inode, stream_id,
2213 /* Unlink a non-directory or alternate data stream */
2215 wimfs_unlink(const char *path)
2217 struct wim_dentry *dentry;
2218 struct wim_lookup_table_entry *lte;
2221 struct wimfs_context *ctx = wimfs_get_context();
2223 ret = lookup_resource(ctx->wim, path, get_lookup_flags(ctx),
2224 &dentry, <e, &stream_idx);
2229 if (stream_idx == 0)
2230 remove_dentry(dentry, ctx->wim->lookup_table);
2232 inode_remove_ads(dentry->d_inode, stream_idx - 1,
2233 ctx->wim->lookup_table);
2237 #ifdef HAVE_UTIMENSAT
2239 * Change the timestamp on a file dentry.
2241 * Note that alternate data streams do not have their own timestamps.
2244 wimfs_utimens(const char *path, const struct timespec tv[2])
2246 struct wim_dentry *dentry;
2247 struct wim_inode *inode;
2248 WIMStruct *w = wimfs_get_WIMStruct();
2250 dentry = get_dentry(w, path);
2253 inode = dentry->d_inode;
2255 if (tv[0].tv_nsec != UTIME_OMIT) {
2256 if (tv[0].tv_nsec == UTIME_NOW)
2257 inode->i_last_access_time = get_wim_timestamp();
2259 inode->i_last_access_time = timespec_to_wim_timestamp(tv[0]);
2261 if (tv[1].tv_nsec != UTIME_OMIT) {
2262 if (tv[1].tv_nsec == UTIME_NOW)
2263 inode->i_last_write_time = get_wim_timestamp();
2265 inode->i_last_write_time = timespec_to_wim_timestamp(tv[1]);
2269 #else /* HAVE_UTIMENSAT */
2271 wimfs_utime(const char *path, struct utimbuf *times)
2273 struct wim_dentry *dentry;
2274 struct wim_inode *inode;
2275 WIMStruct *w = wimfs_get_WIMStruct();
2277 dentry = get_dentry(w, path);
2280 inode = dentry->d_inode;
2282 inode->i_last_write_time = unix_timestamp_to_wim(times->modtime);
2283 inode->i_last_access_time = unix_timestamp_to_wim(times->actime);
2286 #endif /* !HAVE_UTIMENSAT */
2288 /* Writes to a file in the WIM filesystem.
2289 * It may be an alternate data stream, but here we don't even notice because we
2290 * just get a lookup table entry. */
2292 wimfs_write(const char *path, const char *buf, size_t size,
2293 off_t offset, struct fuse_file_info *fi)
2295 struct wimfs_fd *fd = (struct wimfs_fd*)(uintptr_t)fi->fh;
2301 wimlib_assert(fd->f_lte != NULL);
2302 wimlib_assert(fd->f_lte->staging_file_name != NULL);
2303 wimlib_assert(fd->staging_fd != -1);
2304 wimlib_assert(fd->f_inode != NULL);
2306 /* Write the data. */
2307 ret = full_pwrite(fd->staging_fd, buf, size, offset);
2311 /* Update file size */
2312 if (offset + size > fd->f_lte->resource_entry.original_size) {
2313 DEBUG("Update file size %"PRIu64 " => %"PRIu64"",
2314 fd->f_lte->resource_entry.original_size,
2316 fd->f_lte->resource_entry.original_size = offset + size;
2319 /* Update timestamps */
2320 touch_inode(fd->f_inode);
2324 static struct fuse_operations wimfs_operations = {
2325 .chmod = wimfs_chmod,
2326 .chown = wimfs_chown,
2327 .destroy = wimfs_destroy,
2328 .fgetattr = wimfs_fgetattr,
2329 .ftruncate = wimfs_ftruncate,
2330 .getattr = wimfs_getattr,
2332 .getxattr = wimfs_getxattr,
2336 .listxattr = wimfs_listxattr,
2338 .mkdir = wimfs_mkdir,
2339 .mknod = wimfs_mknod,
2341 .opendir = wimfs_opendir,
2343 .readdir = wimfs_readdir,
2344 .readlink = wimfs_readlink,
2345 .release = wimfs_release,
2346 .releasedir = wimfs_releasedir,
2348 .removexattr = wimfs_removexattr,
2350 .rename = wimfs_rename,
2351 .rmdir = wimfs_rmdir,
2353 .setxattr = wimfs_setxattr,
2355 .symlink = wimfs_symlink,
2356 .truncate = wimfs_truncate,
2357 .unlink = wimfs_unlink,
2358 #ifdef HAVE_UTIMENSAT
2359 .utimens = wimfs_utimens,
2361 .utime = wimfs_utime,
2363 .write = wimfs_write,
2365 /* wimfs keeps file descriptor structures (struct wimfs_fd), so there is
2366 * no need to have the file path provided on operations such as read()
2367 * where only the file descriptor is needed. */
2368 #if FUSE_MAJOR_VERSION > 2 || (FUSE_MAJOR_VERSION == 2 && FUSE_MINOR_VERSION >= 8)
2369 .flag_nullpath_ok = 1,
2371 #if FUSE_MAJOR_VERSION > 2 || (FUSE_MAJOR_VERSION == 2 && FUSE_MINOR_VERSION >= 9)
2373 .flag_utime_omit_ok = 1,
2378 /* Mounts an image from a WIM file. */
2380 wimlib_mount_image(WIMStruct *wim, int image, const char *dir,
2381 int mount_flags, WIMStruct **additional_swms,
2382 unsigned num_additional_swms,
2383 const char *staging_dir)
2389 struct wim_image_metadata *imd;
2390 struct wimfs_context ctx;
2391 struct wim_inode *inode;
2393 DEBUG("Mount: wim = %p, image = %d, dir = %s, flags = %d, ",
2394 wim, image, dir, mount_flags);
2397 ret = WIMLIB_ERR_INVALID_PARAM;
2401 ret = verify_swm_set(wim, additional_swms, num_additional_swms);
2405 if (mount_flags & WIMLIB_MOUNT_FLAG_READWRITE) {
2406 ret = can_delete_from_wim(wim);
2411 if (num_additional_swms)
2412 merge_lookup_tables(wim, additional_swms, num_additional_swms);
2414 ret = select_wim_image(wim, image);
2416 goto out_restore_lookup_table;
2418 DEBUG("Selected image %d", image);
2420 imd = wim_get_current_image_metadata(wim);
2422 if (imd->refcnt != 1) {
2423 ERROR("Cannot mount image that was just exported with "
2424 "wimlib_export_image()");
2425 ret = WIMLIB_ERR_INVALID_PARAM;
2426 goto out_restore_lookup_table;
2429 if (imd->modified) {
2430 ERROR("Cannot mount image that was added "
2431 "with wimlib_add_image()");
2432 ret = WIMLIB_ERR_INVALID_PARAM;
2433 goto out_restore_lookup_table;
2436 if (mount_flags & WIMLIB_MOUNT_FLAG_READWRITE) {
2437 ret = lock_wim(wim, wim->in_fd);
2439 goto out_restore_lookup_table;
2442 /* Use default stream interface if one was not specified */
2443 if (!(mount_flags & (WIMLIB_MOUNT_FLAG_STREAM_INTERFACE_NONE |
2444 WIMLIB_MOUNT_FLAG_STREAM_INTERFACE_XATTR |
2445 WIMLIB_MOUNT_FLAG_STREAM_INTERFACE_WINDOWS)))
2446 mount_flags |= WIMLIB_MOUNT_FLAG_STREAM_INTERFACE_XATTR;
2448 DEBUG("Initializing struct wimfs_context");
2449 init_wimfs_context(&ctx);
2451 ctx.mount_flags = mount_flags;
2452 ctx.image_inode_list = &imd->inode_list;
2453 ctx.default_uid = getuid();
2454 ctx.default_gid = getgid();
2455 wimlib_assert(list_empty(&imd->unhashed_streams));
2456 ctx.wim->lookup_table->unhashed_streams = &imd->unhashed_streams;
2457 if (mount_flags & WIMLIB_MOUNT_FLAG_STREAM_INTERFACE_WINDOWS)
2458 ctx.default_lookup_flags = LOOKUP_FLAG_ADS_OK;
2460 DEBUG("Unlinking message queues in case they already exist");
2461 ret = set_message_queue_names(&ctx, dir);
2464 unlink_message_queues(&ctx);
2466 DEBUG("Preparing arguments to fuse_main()");
2468 dir_copy = STRDUP(dir);
2470 goto out_free_message_queue_names;
2473 argv[argc++] = IMAGEX_PROGNAME;
2474 argv[argc++] = dir_copy;
2476 /* disable multi-threaded operation */
2477 argv[argc++] = "-s";
2479 if (mount_flags & WIMLIB_MOUNT_FLAG_DEBUG)
2480 argv[argc++] = "-d";
2483 * We provide the use_ino option to the FUSE mount because we are going
2484 * to assign inode numbers ourselves. */
2485 char optstring[256] =
2489 #if FUSE_MAJOR_VERSION > 2 || (FUSE_MAJOR_VERSION == 2 && FUSE_MINOR_VERSION >= 8)
2492 ",default_permissions"
2494 argv[argc++] = "-o";
2495 argv[argc++] = optstring;
2496 if ((mount_flags & WIMLIB_MOUNT_FLAG_READWRITE)) {
2497 /* Read-write mount. Make the staging directory */
2498 ret = make_staging_dir(&ctx, staging_dir);
2500 goto out_free_dir_copy;
2502 /* Read-only mount */
2503 strcat(optstring, ",ro");
2505 if (mount_flags & WIMLIB_MOUNT_FLAG_ALLOW_OTHER)
2506 strcat(optstring, ",allow_other");
2512 DEBUG("FUSE command line (argc = %d): ", argc);
2513 for (i = 0; i < argc; i++) {
2514 fputs(argv[i], stdout);
2522 /* Mark dentry tree as modified if read-write mount. */
2523 if (mount_flags & WIMLIB_MOUNT_FLAG_READWRITE)
2526 /* Resolve the lookup table entries for every inode in the image, and
2527 * assign inode numbers */
2528 DEBUG("Resolving lookup table entries and assigning inode numbers");
2530 image_for_each_inode(inode, imd)
2531 inode->i_ino = ctx.next_ino++;
2532 DEBUG("(next_ino = %"PRIu64")", ctx.next_ino);
2534 DEBUG("Calling fuse_main()");
2536 ret = fuse_main(argc, argv, &wimfs_operations, &ctx);
2538 DEBUG("Returned from fuse_main() (ret = %d)", ret);
2541 ret = WIMLIB_ERR_FUSE;
2543 if (ctx.have_status)
2546 ret = WIMLIB_ERR_TIMEOUT;
2548 if (ctx.daemon_to_unmount_mq != (mqd_t)(-1)) {
2549 send_unmount_finished_msg(ctx.daemon_to_unmount_mq, ret);
2550 close_message_queues(&ctx);
2553 /* Try to delete the staging directory if a deletion wasn't yet
2554 * attempted due to an earlier error */
2555 if (ctx.staging_dir_name)
2556 delete_staging_dir(&ctx);
2560 wim->wim_locked = 0;
2561 out_free_message_queue_names:
2562 free_message_queue_names(&ctx);
2563 out_restore_lookup_table:
2564 if (num_additional_swms)
2565 unmerge_lookup_table(wim);
2571 * Unmounts the WIM file that was previously mounted on @dir by using
2572 * wimlib_mount_image().
2575 wimlib_unmount_image(const char *dir, int unmount_flags,
2576 wimlib_progress_func_t progress_func)
2579 struct wimfs_context wimfs_ctx;
2581 init_wimfs_context(&wimfs_ctx);
2583 ret = set_message_queue_names(&wimfs_ctx, dir);
2587 ret = open_message_queues(&wimfs_ctx, false);
2589 goto out_free_message_queue_names;
2591 ret = send_unmount_request_msg(wimfs_ctx.unmount_to_daemon_mq,
2593 progress_func != NULL);
2595 goto out_close_message_queues;
2597 ret = execute_fusermount(dir, (unmount_flags & WIMLIB_UNMOUNT_FLAG_LAZY) != 0);
2599 goto out_close_message_queues;
2601 struct unmount_msg_handler_context handler_ctx = {
2603 .timeout_seconds = 5,
2606 .progress_func = progress_func,
2609 ret = message_loop(wimfs_ctx.daemon_to_unmount_mq,
2610 &unmount_msg_handler_callbacks,
2613 ret = handler_ctx.status;
2614 out_close_message_queues:
2615 close_message_queues(&wimfs_ctx);
2616 out_free_message_queue_names:
2617 free_message_queue_names(&wimfs_ctx);
2622 #else /* WITH_FUSE */
2626 mount_unsupported_error(void)
2628 #if defined(__WIN32__)
2629 ERROR("Sorry-- Mounting WIM images is not supported on Windows!");
2631 ERROR("wimlib was compiled with --without-fuse, which disables support "
2632 "for mounting WIMs.");
2634 return WIMLIB_ERR_UNSUPPORTED;
2638 wimlib_unmount_image(const tchar *dir, int unmount_flags,
2639 wimlib_progress_func_t progress_func)
2641 return mount_unsupported_error();
2645 wimlib_mount_image(WIMStruct *wim, int image, const tchar *dir,
2646 int mount_flags, WIMStruct **additional_swms,
2647 unsigned num_additional_swms,
2648 const tchar *staging_dir)
2650 return mount_unsupported_error();
2653 #endif /* !WITH_FUSE */