struct lookup_table_entry *lte;
lte = CALLOC(1, sizeof(struct lookup_table_entry));
- if (!lte) {
+ if (lte) {
+ lte->part_number = 1;
+ lte->refcnt = 1;
+ } else {
ERROR("Out of memory (tried to allocate %zu bytes for "
"lookup table entry)",
sizeof(struct lookup_table_entry));
- return NULL;
}
-
- lte->part_number = 1;
- lte->refcnt = 1;
return lte;
}
+struct lookup_table_entry *
+clone_lookup_table_entry(const struct lookup_table_entry *old)
+{
+ struct lookup_table_entry *new;
+
+ new = MALLOC(sizeof(*new));
+ if (!new)
+ return NULL;
+
+ memcpy(new, old, sizeof(*old));
+ new->extracted_file = NULL;
+ switch (new->resource_location) {
+ case RESOURCE_IN_STAGING_FILE:
+ case RESOURCE_IN_FILE_ON_DISK:
+ wimlib_assert((void*)&old->file_on_disk ==
+ (void*)&old->staging_file_name);
+ new->staging_file_name = STRDUP(old->staging_file_name);
+ if (!new->staging_file_name)
+ goto out_free;
+ break;
+ case RESOURCE_IN_ATTACHED_BUFFER:
+ new->attached_buffer = MALLOC(wim_resource_size(old));
+ if (!new->attached_buffer)
+ goto out_free;
+ memcpy(new->attached_buffer, old->attached_buffer,
+ wim_resource_size(old));
+ break;
+ case RESOURCE_IN_NTFS_VOLUME:
+ if (old->ntfs_loc) {
+ struct ntfs_location *loc;
+ loc = MALLOC(sizeof(*loc));
+ if (!loc)
+ goto out_free;
+ memcpy(loc, old->ntfs_loc, sizeof(*loc));
+ loc->path_utf8 = NULL;
+ loc->stream_name_utf16 = NULL;
+ new->ntfs_loc = loc;
+ loc->path_utf8 = STRDUP(old->ntfs_loc->path_utf8);
+ if (!loc->path_utf8)
+ goto out_free;
+ loc->stream_name_utf16 = MALLOC(loc->stream_name_utf16_num_chars * 2);
+ if (!loc->stream_name_utf16)
+ goto out_free;
+ memcpy(loc->stream_name_utf16,
+ old->ntfs_loc->stream_name_utf16,
+ loc->stream_name_utf16_num_chars * 2);
+ }
+ break;
+ }
+ return new;
+out_free:
+ free_lookup_table_entry(new);
+ return NULL;
+}
+
void free_lookup_table_entry(struct lookup_table_entry *lte)
{
if (lte) {
* reference count reaches 0, it is unlinked from the lookup table. If,
* furthermore, the entry has no opened file descriptors associated with it, the
* entry is freed. */
-struct lookup_table_entry *
-lte_decrement_refcnt(struct lookup_table_entry *lte, struct lookup_table *table)
+void lte_decrement_refcnt(struct lookup_table_entry *lte,
+ struct lookup_table *table)
{
wimlib_assert(lte);
wimlib_assert(lte->refcnt);
#ifdef WITH_FUSE
if (lte->num_opened_fds == 0)
#endif
- {
finalize_lte(lte);
- lte = NULL;
- }
}
- return lte;
}
#ifdef WITH_FUSE
-struct lookup_table_entry *
-lte_decrement_num_opened_fds(struct lookup_table_entry *lte,
- struct lookup_table *table)
+void lte_decrement_num_opened_fds(struct lookup_table_entry *lte,
+ struct lookup_table *table)
{
- if (lte) {
- wimlib_assert(lte->num_opened_fds);
- if (--lte->num_opened_fds == 0 && lte->refcnt == 0) {
- lookup_table_unlink(table, lte);
- finalize_lte(lte);
- lte = NULL;
- }
- }
- return lte;
+ wimlib_assert(lte);
+ wimlib_assert(lte->num_opened_fds);
+ if (--lte->num_opened_fds == 0 && lte->refcnt == 0)
+ finalize_lte(lte);
}
#endif
w->hdr.lookup_table_res_entry.offset,
w->hdr.lookup_table_res_entry.original_size);
- if (fseeko(w->fp, w->hdr.lookup_table_res_entry.offset, SEEK_SET) != 0) {
+ if (fseeko(w->fp, w->hdr.lookup_table_res_entry.offset, SEEK_SET) != 0)
+ {
ERROR_WITH_ERRNO("Failed to seek to byte %"PRIu64" to read "
"lookup table",
w->hdr.lookup_table_res_entry.offset);
w->hdr.part_number, cur_entry->part_number);
ret = WIMLIB_ERR_INVALID_LOOKUP_TABLE_ENTRY;
goto out_free_cur_entry;
-
}
if (is_zero_hash(cur_entry->hash)) {
if (!(cur_entry->resource_entry.flags & WIM_RESHDR_FLAG_COMPRESSED)
&& (cur_entry->resource_entry.size !=
- cur_entry->resource_entry.original_size))
+ cur_entry->resource_entry.original_size))
{
ERROR("Found uncompressed resource with original size "
"not the same as compressed size");
struct lookup_table_entry *lte;
struct hlist_node *pos;
- wimlib_assert(table);
+ wimlib_assert(table != NULL);
+ wimlib_assert(hash != NULL);
i = *(size_t*)hash % table->capacity;
hlist_for_each_entry(lte, pos, &table->array[i], hash_list)
{
struct lookup_table_entry *lte;
+ wimlib_assert(!inode->resolved);
+
/* Resolve the default file stream */
lte = __lookup_resource(table, inode->hash);
inode->lte = lte;
}
}
+static void inode_unresolve_ltes(struct inode *inode)
+{
+ wimlib_assert(inode->resolved);
+ if (inode->lte)
+ copy_hash(inode->hash, inode->lte->hash);
+ else
+ zero_out_hash(inode->hash);
+
+ for (u16 i = 0; i < inode->num_ads; i++) {
+ if (inode->ads_entries[i].lte)
+ copy_hash(inode->ads_entries[i].hash,
+ inode->ads_entries[i].lte->hash);
+ else
+ zero_out_hash(inode->ads_entries[i].hash);
+ }
+ inode->resolved = false;
+}
+
/* Resolve a dentry's lookup table entries
*
* This replaces the SHA1 hash fields (which are used to lookup an entry in the
return 0;
}
+int dentry_unresolve_ltes(struct dentry *dentry, void *ignore)
+{
+ if (dentry->d_inode->resolved)
+ inode_unresolve_ltes(dentry->d_inode);
+ return 0;
+}
+
/* Return the lookup table entry for the unnamed data stream of an inode, or
* NULL if there is none.
*
* data stream in one of the alternate data streams instead of inside the WIM
* dentry itself. So we need to check the alternate data streams too.
*
- * Also, note that a dentry may appear to have than one unnamed stream, but if
- * the SHA1 message digest is all 0's then the corresponding stream does not
+ * Also, note that a dentry may appear to have more than one unnamed stream, but
+ * if the SHA1 message digest is all 0's then the corresponding stream does not
* really "count" (this is the case for the inode's own file stream when the
* file stream that should be there is actually in one of the alternate stream
* entries.). This is despite the fact that we may need to extract such a
git://wimlib.net / wimlib / blobdiff