return 0;
}
+/* Returns nonzero if write permission is requested on the file open flags */
static inline int flags_writable(int open_flags)
{
return open_flags & (O_RDWR | O_WRONLY);
}
+/*
+ * Allocate a file descriptor for a lookup table entry
+ */
static int alloc_wimlib_fd(struct lookup_table_entry *lte,
struct wimlib_fd **fd_ret)
{
return -EMFILE;
num_new_fds = min(fds_per_alloc, max_fds - lte->num_allocated_fds);
- fds = CALLOC(lte->num_allocated_fds + num_new_fds,
- sizeof(lte->fds[0]));
+ fds = REALLOC(lte->fds, (lte->num_allocated_fds + num_new_fds) *
+ sizeof(lte->fds[0]));
if (!fds)
return -ENOMEM;
- memcpy(fds, lte->fds,
- lte->num_allocated_fds * sizeof(lte->fds[0]));
- FREE(lte->fds);
+ memset(&fds[lte->num_allocated_fds], 0,
+ num_new_fds * sizeof(fds[0]));
lte->fds = fds;
lte->num_allocated_fds += num_new_fds;
}
unlink(lte->staging_file_name);
free_lookup_table_entry(lte);
}
+ wimlib_assert(lte->fds[fd->idx] == fd);
lte->fds[fd->idx] = NULL;
FREE(fd);
return 0;
}
+/* Remove a dentry and all its alternate file streams */
static void remove_dentry(struct dentry *dentry,
struct lookup_table *lookup_table)
{
- const u8 *hash = dentry->hash;
+ wimlib_assert(dentry);
+ wimlib_assert(dentry->resolved);
+
+ struct lookup_table_entry *lte = dentry->lte;
u16 i = 0;
- struct lookup_table_entry *lte;
while (1) {
- lte = lookup_table_decrement_refcnt(lookup_table, hash);
+ lte = lte_decrement_refcnt(lte, lookup_table);
if (lte && lte->num_opened_fds)
for (u16 i = 0; i < lte->num_allocated_fds; i++)
if (lte->fds[i] && lte->fds[i]->dentry == dentry)
lte->fds[i]->dentry = NULL;
if (i == dentry->num_ads)
break;
- hash = dentry->ads_entries[i].hash;
+ lte = dentry->ads_entries[i].lte;
i++;
}
put_dentry(dentry);
}
-static void dentry_increment_lookup_table_refcnts(struct dentry *dentry,
- struct lookup_table *lookup_table)
-{
- u16 i = 0;
- const u8 *hash = dentry->hash;
- struct lookup_table_entry *lte;
- while (1) {
- lte = __lookup_resource(lookup_table, hash);
- if (lte)
- lte->refcnt++;
- if (i == dentry->num_ads)
- break;
- hash = dentry->ads_entries[i].hash;
- i++;
- }
-}
-
/* Transfers file attributes from a struct dentry to a `stat' buffer. */
int dentry_to_stbuf(const struct dentry *dentry, struct stat *stbuf)
{
stbuf->st_gid = getgid();
/* Use the size of the unnamed (default) file stream. */
- if ((lte = dentry_lte(dentry))) {
+ lte = dentry_first_lte_resolved(dentry);
+ if (lte) {
if (lte->staging_file_name) {
struct stat native_stat;
- if (stat(lte->staging_file_name, &native_stat) != 0)
+ if (stat(lte->staging_file_name, &native_stat) != 0) {
+ DEBUG("Failed to stat `%s': %m",
+ lte->staging_file_name);
return -errno;
+ }
stbuf->st_size = native_stat.st_size;
} else {
stbuf->st_size = lte->resource_entry.original_size;
stbuf->st_size = 0;
}
- stbuf->st_atime = ms_timestamp_to_unix(dentry->last_access_time);
- stbuf->st_mtime = ms_timestamp_to_unix(dentry->last_write_time);
- stbuf->st_ctime = ms_timestamp_to_unix(dentry->creation_time);
+ stbuf->st_atime = wim_timestamp_to_unix(dentry->last_access_time);
+ stbuf->st_mtime = wim_timestamp_to_unix(dentry->last_write_time);
+ stbuf->st_ctime = wim_timestamp_to_unix(dentry->creation_time);
stbuf->st_blocks = (stbuf->st_size + 511) / 512;
return 0;
}
-#if 0
-/* Change the hash value of the main or alternate file stream in a hard link
- * group. This needs to be done if the hash of the corresponding lookup table
- * entry was changed. */
-static void link_group_set_stream_hash(struct dentry *dentry,
- unsigned stream_idx,
- const u8 new_hash[])
-{
- struct list_head *head, *cur;
-
- if (stream_idx == 0) {
- head = &dentry->link_group_list;
- cur = head;
- do {
- dentry = container_of(cur, struct dentry, link_group_list);
- memcpy(dentry->hash, new_hash, WIM_HASH_SIZE);
- cur = cur->next;
- } while (cur != head);
- } else {
- /* Dentries in the link group share their alternate stream
- * entries. */
- wimlib_assert(stream_idx <= dentry->num_ads);
- memcpy(dentry->ads_entries[stream_idx - 1].hash, new_hash,
- WIM_HASH_SIZE);
- }
-}
-#endif
-
/* Creates a new staging file and returns its file descriptor opened for
* writing.
*
int fd;
int errno_save;
- name_len = staging_dir_name_len + 1 + WIM_HASH_SIZE;
+ name_len = staging_dir_name_len + 1 + SHA1_HASH_SIZE;
name = MALLOC(name_len + 1);
if (!name) {
errno = ENOMEM;
memcpy(name, staging_dir_name, staging_dir_name_len);
name[staging_dir_name_len] = '/';
randomize_char_array_with_alnum(name + staging_dir_name_len + 1,
- WIM_HASH_SIZE);
+ SHA1_HASH_SIZE);
name[name_len] = '\0';
return fd;
}
-/* Removes open file descriptors from a lookup table entry @old_lte where the
+/*
+ * Removes open file descriptors from a lookup table entry @old_lte where the
* file descriptors have opened the corresponding file resource in the context
* of the hard link group @link_group; these file descriptors are extracted and
- * placed in a new lookup table entry, which is returned. */
+ * placed in a new lookup table entry, which is returned.
+ */
static struct lookup_table_entry *
lte_extract_fds(struct lookup_table_entry *old_lte, u64 link_group)
{
num_transferred_fds = 0;
for (u16 i = 0; i < old_lte->num_allocated_fds; i++)
- if (old_lte->fds[i] &&
+ if (old_lte->fds[i] && old_lte->fds[i]->dentry &&
old_lte->fds[i]->dentry->hard_link == link_group)
num_transferred_fds++;
DEBUG("Transferring %u file descriptors",
return NULL;
}
for (u16 i = 0, j = 0; ; i++) {
- if (old_lte->fds[i] &&
+ if (old_lte->fds[i] && old_lte->fds[i]->dentry &&
old_lte->fds[i]->dentry->hard_link == link_group) {
struct wimlib_fd *fd = old_lte->fds[i];
old_lte->fds[i] = NULL;
break;
}
}
+ DEBUG("old_lte: %u fds open; new_lte: %u fds open",
+ old_lte->num_opened_fds, new_lte->num_opened_fds);
old_lte->num_opened_fds -= num_transferred_fds;
new_lte->num_opened_fds = num_transferred_fds;
new_lte->num_allocated_fds = num_transferred_fds;
static void lte_transfer_dentry(struct lookup_table_entry *new_lte,
struct dentry *dentry)
{
+ wimlib_assert(dentry->lte_group_list.list.next);
+ wimlib_assert(new_lte->lte_group_list.next);
list_del(&dentry->lte_group_list.list);
list_add(&dentry->lte_group_list.list, &new_lte->lte_group_list);
dentry->lte = new_lte;
{
INIT_LIST_HEAD(&new_lte->lte_group_list);
if (stream_idx == 0) {
- struct list_head *pos;
+ struct list_head *pos = &dentry->link_group_list;
do {
struct dentry *d;
d = container_of(pos, struct dentry, link_group_list);
+ wimlib_assert(d->hard_link == dentry->hard_link);
lte_transfer_dentry(new_lte, d);
-
pos = pos->next;
} while (pos != &dentry->link_group_list);
} else {
struct ads_entry *ads_entry;
+ wimlib_assert(stream_idx <= dentry->num_ads);
ads_entry = &dentry->ads_entries[stream_idx - 1];
lte_transfer_ads_entry(new_lte, ads_entry);
}
}
-#if 0
-/*
- * Transfers streams part of a hard-link group from @old_lte to @new_lte.
- *
- * @dentry is one of the dentries in the hard link group
- * @stream_idx is the index of the stream that we're transferring.
- */
-static void lte_transfer_stream_entries(struct lookup_table_entry *old_lte,
- struct lookup_table_entry *new_lte,
- struct dentry *dentry, unsigned stream_idx)
-{
- INIT_LIST_HEAD(&new_lte->lte_group_list);
-
- if (stream_idx == 0) {
- struct list_head *pos;
- struct stream_list_head *head;
- struct dentry *other_dentry;
- list_for_each(pos, &old_lte->lte_group_list) {
- head = container_of(pos, struct stream_list_head, head);
- if (head->type != STREAM_TYPE_NORMAL) {
- continue;
- other_dentry = container_of(head, struct dentry,
- lte_group_list);
- if (other_dentry->hard_link != dentry->link_group)
- continue;
-
- list_del(&other_dentry->lte_group_list.list);
- list_add(&other_dentry->lte_group_list.list,
- &new_lte->lte_group_list);
- other_dentry->lte = new_lte;
- }
- } else {
- /* ADS entries are shared within a hard link group. */
- lte_load_ads_entry(new_lte, &dentry->ads_entries[stream_idx - 1]);
- }
-}
-static void lte__stream_entries(struct lookup_table_entry *new_lte,
- struct dentry *dentry, unsigned stream_idx)
-{
- INIT_LIST_HEAD(new_lte->lte_group_list);
- if (stream_idx == 0) {
- struct list_head *cur;
- do {
- struct dentry *d;
-
- d = container_of(cur, struct dentry, link_group_list);
- list_del(&d->lte_group_list);
- list_add(&d->lte_group_list, &new_lte->lte_group_list);
- d->lte = new_lte;
- cur = cur->next;
- } while (cur != &dentry->link_group_list);
- } else {
- lte_load_ads_entry(new_lte, &dentry->ads_entries[stream_idx - 1]);
- }
-}
-#endif
-
-
/*
* Extract a WIM resource to the staging directory.
*
- * We need to:
- * - Create a staging file for the WIM resource
- * - Extract the resource to it
- * - Create a new lte for the file resource
- * - Transfer fds from the old lte to the new lte, but
- * only if they share the same hard link group as this
- * dentry
+ * @dentry, @stream_idx: The stream on whose behalf we are modifying the lookup
+ * table entry (these may be more streams than this that reference the lookup
+ * table entry)
+ *
+ * @lte: Pointer to pointer to the lookup table entry for the stream we need to
+ * extract, or NULL if there was no lookup table entry present for the stream
+ *
+ * @size: Number of bytes of the stream we want to extract (this supports the
+ * wimfs_truncate() function).
*/
static int extract_resource_to_staging_dir(struct dentry *dentry,
unsigned stream_idx,
struct lookup_table_entry *old_lte, *new_lte;
size_t link_group_size;
+ /*
+ * We need to:
+ * - Create a staging file for the WIM resource
+ * - Extract the resource to it
+ * - Create a new lte for the file resource
+ * - Transfer fds from the old lte to the new lte, but only if they share the
+ * same hard link group as this dentry. If there is no old lte, then this
+ * step does not need to be done
+ * - Transfer stream entries from the old lte's list to the new lte's list. If
+ * there is no old lte, we instead transfer entries for the hard link group.
+ *
+ * Note: *lte is permitted to be NULL, in which case there is no old
+ * lookup table entry.
+ */
+
DEBUG("Extracting resource `%s' to staging directory", dentry->full_path_utf8);
old_lte = *lte;
/* This hard link group is the only user of the lookup
* table entry, so we can re-use it. */
DEBUG("Re-using lookup table entry");
- lookup_table_remove(w->lookup_table, old_lte);
+ lookup_table_unlink(w->lookup_table, old_lte);
new_lte = old_lte;
} else {
DEBUG("Splitting lookup table entry "
* groups that were identical, but now we are changing
* one of them) */
- /* XXX The ADS really complicate things here and not
+ /* XXX
+ * The ADS really complicate things here and not
* everything is going to work correctly yet. For
* example it could be the same that a file contains two
* file streams that are identical and therefore share
* the same lookup table entry despite the fact that the
- * streams themselves are not hardlinked. */
+ * streams themselves are not hardlinked.
+ * XXX*/
wimlib_assert(old_lte->refcnt > link_group_size);
new_lte = lte_extract_fds(old_lte, dentry->hard_link);
}
new_lte->resource_entry.original_size = size;
new_lte->refcnt = link_group_size;
- randomize_byte_array(new_lte->hash, WIM_HASH_SIZE);
+ random_hash(new_lte->hash);
new_lte->staging_file_name = staging_file_name;
lookup_table_insert(w->lookup_table, new_lte);
return 0;
}
+static void lte_list_change_lte_ptr(struct lookup_table_entry *lte,
+ struct lookup_table_entry *newptr)
+{
+ struct list_head *pos;
+ struct stream_list_head *head;
+ list_for_each(pos, <e->lte_group_list) {
+ head = container_of(pos, struct stream_list_head, list);
+ if (head->type == STREAM_TYPE_ADS) {
+ struct ads_entry *ads_entry;
+ ads_entry = container_of(head, struct ads_entry, lte_group_list);
+
+ ads_entry->lte = newptr;
+ } else {
+ wimlib_assert(head->type == STREAM_TYPE_NORMAL);
+
+ struct dentry *dentry;
+ dentry = container_of(head, struct dentry, lte_group_list);
+
+ dentry->lte = newptr;
+ }
+ }
+}
-/* Calculates the SHA1 sum for @dentry if its file resource is in a staging
- * file. Updates the SHA1 sum in the dentry and the lookup table entry. If
- * there is already a lookup table entry with the same checksum, increment its
- * reference count and destroy the lookup entry with the updated checksum. */
-static int calculate_sha1sum_of_staging_file(struct dentry *dentry,
- void *__lookup_table)
+
+static int update_lte_of_staging_file(struct lookup_table_entry *lte,
+ struct lookup_table *table)
{
- struct lookup_table *lookup_table = __lookup_table;
- u8 *hash = dentry->hash;
- u16 i = 0;
- while (1) {
- struct lookup_table_entry *lte = __lookup_resource(lookup_table, hash);
- if (lte && lte->staging_file_name) {
- struct lookup_table_entry *existing;
- int ret;
-
- DEBUG("Calculating SHA1 hash for file `%s'",
- dentry->file_name_utf8);
- ret = sha1sum(lte->staging_file_name, lte->hash);
- if (ret != 0)
- return ret;
-
- lookup_table_unlink(lookup_table, lte);
- memcpy(hash, lte->hash, WIM_HASH_SIZE);
- existing = __lookup_resource(lookup_table, hash);
- if (existing) {
- DEBUG("Merging duplicate lookup table entries for file "
- "`%s'", dentry->file_name_utf8);
- free_lookup_table_entry(lte);
- existing->refcnt++;
- } else {
- lookup_table_insert(lookup_table, lte);
- }
+ struct lookup_table_entry *duplicate_lte;
+ int ret;
+ u8 hash[SHA1_HASH_SIZE];
+ struct stat stbuf;
+
+ wimlib_assert(lte->staging_file_name);
+
+ ret = sha1sum(lte->staging_file_name, hash);
+ if (ret != 0)
+ return ret;
+
+
+ lookup_table_unlink(table, lte);
+
+ duplicate_lte = __lookup_resource(table, hash);
+
+ if (duplicate_lte) {
+ /* Merge duplicate lookup table entries */
+
+ lte_list_change_lte_ptr(lte, duplicate_lte);
+ duplicate_lte->refcnt += lte->refcnt;
+ list_splice(<e->lte_group_list,
+ &duplicate_lte->lte_group_list);
+
+ free_lookup_table_entry(lte);
+ } else {
+ if (stat(lte->staging_file_name, &stbuf) != 0) {
+ ERROR_WITH_ERRNO("Failed to stat `%s'", lte->staging_file_name);
+ return WIMLIB_ERR_STAT;
}
- if (i == dentry->num_ads)
- break;
- hash = dentry->ads_entries[i].hash;
- i++;
+ copy_hash(lte->hash, hash);
+ lte->resource_entry.original_size = stbuf.st_size;
+ lookup_table_insert(table, lte);
}
+
return 0;
}
static int rebuild_wim(WIMStruct *w, bool check_integrity)
{
int ret;
- struct lookup_table_entry *lte;
+ struct lookup_table_entry *lte, *tmp;
/* Close all the staging file descriptors. */
DEBUG("Closing all staging file descriptors.");
/* Calculate SHA1 checksums for all staging files, and merge unnecessary
* lookup table entries. */
DEBUG("Calculating SHA1 checksums for all new staging files.");
- ret = for_dentry_in_tree(wim_root_dentry(w),
- calculate_sha1sum_of_staging_file, w->lookup_table);
+ list_for_each_entry_safe(lte, tmp, &staging_list, staging_list) {
+ ret = update_lte_of_staging_file(lte, w->lookup_table);
+ if (ret != 0)
+ return ret;
+ }
if (ret != 0)
return ret;
if (status == 0)
status = ret;
}
+ } else {
+ DEBUG("Read-only mount");
}
done:
+ DEBUG("Sending status %u", status);
ret = mq_send(daemon_to_unmount_mq, &status, 1, 1);
if (ret == -1)
ERROR_WITH_ERRNO("Failed to send status to unmount process");
FREE(from_dentry);
return -ENOMEM;
}
+
+ /* Add the new dentry to the dentry list for the link group */
list_add(&from_dentry->link_group_list, &to_dentry->link_group_list);
+
+ /* Increment reference counts for the unnamed file stream and all
+ * alternate data streams. */
+ if (from_dentry->lte) {
+ list_add(&from_dentry->lte_group_list.list,
+ &to_dentry->lte_group_list.list);
+ from_dentry->lte->refcnt++;
+ }
+ for (u16 i = 0; i < from_dentry->num_ads; i++) {
+ struct ads_entry *ads_entry = &from_dentry->ads_entries[i];
+ if (ads_entry->lte)
+ ads_entry->lte->refcnt++;
+ }
+
+ /* The ADS entries are owned by another dentry. */
+ from_dentry->ads_entries_status = ADS_ENTRIES_USER;
+
link_dentry(from_dentry, from_dentry_parent);
- dentry_increment_lookup_table_refcnts(from_dentry, w->lookup_table);
- from_dentry->link_group_master_status = GROUP_SLAVE;
return 0;
}
newdir = new_dentry(basename);
newdir->attributes |= FILE_ATTRIBUTE_DIRECTORY;
+ newdir->resolved = true;
+ newdir->hard_link = next_link_group_id++;
link_dentry(newdir, parent);
return 0;
}
const char *stream_name;
if ((mount_flags & WIMLIB_MOUNT_FLAG_STREAM_INTERFACE_WINDOWS)
&& (stream_name = path_stream_name(path))) {
+ /* Make an alternate data stream */
struct ads_entry *new_entry;
struct dentry *dentry;
struct dentry *dentry, *parent;
const char *basename;
+ /* Make a normal file (not an alternate data stream) */
+
/* Make sure that the parent of @path exists and is a directory, and
* that the dentry named by @path does not already exist. */
parent = get_parent_dentry(w, path);
dentry = new_dentry(basename);
if (!dentry)
return -ENOMEM;
+ dentry->resolved = true;
dentry->hard_link = next_link_group_id++;
+ dentry->lte_group_list.type = STREAM_TYPE_NORMAL;
+ INIT_LIST_HEAD(&dentry->lte_group_list.list);
link_dentry(dentry, parent);
}
return 0;
return 0;
}
+ wimlib_assert(fd->lte);
+
if (fd->lte->staging_file_name) {
/* Read from staging file */
return -errno;
return ret;
} else {
-
/* Read from WIM */
struct resource_entry *res_entry;
/* Fills in the entries of the directory specified by @path using the
* FUSE-provided function @filler. */
static int wimfs_readdir(const char *path, void *buf, fuse_fill_dir_t filler,
- off_t offset, struct fuse_file_info *fi)
+ off_t offset, struct fuse_file_info *fi)
{
struct dentry *parent, *child;
parent = (struct dentry*)fi->fh;
+ wimlib_assert(parent);
child = parent->children;
filler(buf, ".", NULL, 0);
}
if (flags_writable(fi->flags) && fd->dentry) {
- u64 now = get_timestamp();
+ u64 now = get_wim_timestamp();
fd->dentry->last_access_time = now;
fd->dentry->last_write_time = now;
}
{
struct dentry *dentry = (struct dentry *)fi->fh;
+ wimlib_assert(dentry);
wimlib_assert(dentry->num_times_opened);
if (--dentry->num_times_opened == 0)
free_dentry(dentry);
return -ENOMEM;
if (dst) {
+ /* Destination file exists */
+
if (src == dst) /* Same file */
return 0;
parent_of_dst = dst->parent;
remove_dentry(dst, w->lookup_table);
} else {
+ /* Destination does not exist */
parent_of_dst = get_parent_dentry(w, to);
if (!parent_of_dst)
return -ENOENT;
+
+ if (!dentry_is_directory(parent_of_dst))
+ return -ENOTDIR;
}
FREE(src->file_name);
dentry->attributes = FILE_ATTRIBUTE_REPARSE_POINT;
dentry->reparse_tag = WIM_IO_REPARSE_TAG_SYMLINK;
+ dentry->hard_link = next_link_group_id++;
if (dentry_set_symlink(dentry, to, w->lookup_table, <e) != 0)
goto out_free_dentry;
+ wimlib_assert(lte);
+
dentry->ads_entries[1].lte_group_list.type = STREAM_TYPE_ADS;
list_add(&dentry->ads_entries[1].lte_group_list.list,
<e->lte_group_list);
- dentry->ads_entries[1].lte = lte;
+ wimlib_assert(dentry->resolved);
link_dentry(dentry, dentry_parent);
return 0;
struct ads_entry *ads_entry;
ads_entry = &dentry->ads_entries[stream_idx - 1];
- lte_decrement_refcnt(lte, w->lookup_table);
- list_del(&ads_entry->lte_group_list.list);
+ lte = lte_decrement_refcnt(lte, w->lookup_table);
+ if (lte)
+ list_del(&ads_entry->lte_group_list.list);
dentry_remove_ads(dentry, ads_entry);
}
/* Beware: The lookup table entry(s) may still be referenced by users
return 0;
}
-/* Change the timestamp on a file dentry.
+/*
+ * Change the timestamp on a file dentry.
*
- * There is no distinction between a file and its alternate data streams here. */
+ * Note that alternate data streams do not have their own timestamps.
+ */
static int wimfs_utimens(const char *path, const struct timespec tv[2])
{
struct dentry *dentry = get_dentry(w, path);
if (!dentry)
return -ENOENT;
- time_t last_access_t = (tv[0].tv_nsec == UTIME_NOW) ?
- time(NULL) : tv[0].tv_sec;
- dentry->last_access_time = unix_timestamp_to_ms(last_access_t);
- time_t last_mod_t = (tv[1].tv_nsec == UTIME_NOW) ?
- time(NULL) : tv[1].tv_sec;
- dentry->last_write_time = unix_timestamp_to_ms(last_mod_t);
+ if (tv[0].tv_nsec != UTIME_OMIT) {
+ if (tv[0].tv_nsec == UTIME_NOW)
+ dentry->last_access_time = get_wim_timestamp();
+ else
+ dentry->last_access_time = timespec_to_wim_timestamp(&tv[0]);
+ }
+ if (tv[1].tv_nsec != UTIME_OMIT) {
+ if (tv[1].tv_nsec == UTIME_NOW)
+ dentry->last_write_time = get_wim_timestamp();
+ else
+ dentry->last_write_time = timespec_to_wim_timestamp(&tv[1]);
+ }
return 0;
}
struct wimlib_fd *fd = (struct wimlib_fd*)fi->fh;
int ret;
+ wimlib_assert(fd);
wimlib_assert(fd->lte);
wimlib_assert(fd->lte->staging_file_name);
wimlib_assert(fd->staging_fd != -1);
return ret;
}
-
static struct fuse_operations wimfs_operations = {
.access = wimfs_access,
.destroy = wimfs_destroy,
};
+static int check_lte_refcnt(struct lookup_table_entry *lte, void *ignore)
+{
+ size_t lte_group_size = 0;
+ struct list_head *cur;
+ list_for_each(cur, <e->lte_group_list)
+ lte_group_size++;
+ if (lte_group_size > lte->refcnt) {
+#ifdef ENABLE_ERROR_MESSAGES
+ ERROR("The following lookup table entry has a reference count "
+ "of %u, but", lte->refcnt);
+ ERROR("We found %u references to it", lte_group_size);
+ print_lookup_table_entry(lte);
+#endif
+ return WIMLIB_ERR_INVALID_DENTRY;
+ }
+ return 0;
+}
+
/* Mounts a WIM file. */
WIMLIBAPI int wimlib_mount(WIMStruct *wim, int image, const char *dir,
int flags)
next_link_group_id = assign_link_groups(wim->image_metadata[image - 1].lgt);
- resolve_lookup_table_entries(wim_root_dentry(wim), w->lookup_table);
+ /* Resolve all the lookup table entries of the dentry tree */
+ for_dentry_in_tree(wim_root_dentry(wim), dentry_resolve_ltes,
+ wim->lookup_table);
+
+ ret = for_lookup_table_entry(wim->lookup_table, check_lte_refcnt, NULL);
+ if (ret != 0)
+ return ret;
if (flags & WIMLIB_MOUNT_FLAG_READWRITE)
wim_get_current_image_metadata(wim)->modified = true;
argv[argc++] = p;
argv[argc++] = "-s"; /* disable multi-threaded operation */
- if (flags & WIMLIB_MOUNT_FLAG_DEBUG) {
+ if (flags & WIMLIB_MOUNT_FLAG_DEBUG)
argv[argc++] = "-d";
- }
+
+ /*
+ * We provide the use_ino option because we are going to assign inode
+ * numbers oursides. We've already numbered the hard link groups with
+ * unique numbers with the assign_link_groups() function, and the static
+ * variable next_link_group_id is set to the next available link group
+ * ID that we will assign to new dentries.
+ */
char optstring[256] = "use_ino";
argv[argc++] = "-o";
argv[argc++] = optstring;
if ((flags & WIMLIB_MOUNT_FLAG_READWRITE)) {
+ /* Read-write mount. Make the staging directory */
make_staging_dir();
if (!staging_dir_name) {
FREE(p);
return WIMLIB_ERR_MKDIR;
}
} else {
+ /* Read-only mount */
strcat(optstring, ",ro");
}
argv[argc] = NULL;
* filesystem daemon has crashed or failed for some reason.
*
* XXX come up with some method to determine if the filesystem
- * daemon has really crashed or not. */
+ * daemon has really crashed or not.
+ *
+ * XXX Idea: have mount daemon write its PID into the WIM file header?
+ * */
gettimeofday(&now, NULL);
timeout.tv_sec = now.tv_sec + 600;
git://wimlib.net / wimlib / blobdiff