struct lookup_table_entry *new_lookup_table_entry()
{
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;
}
memcpy(new->attached_buffer, old->attached_buffer,
wim_resource_size(old));
break;
+#ifdef WITH_NTFS_3G
case RESOURCE_IN_NTFS_VOLUME:
if (old->ntfs_loc) {
struct ntfs_location *loc;
loc->stream_name_utf16_num_chars * 2);
}
break;
+#endif
+ default:
+ break;
}
return new;
out_free:
default:
break;
}
- FREE(lte->extracted_file);
FREE(lte);
}
}
* @table: A pointer to the lookup table.
* @entry: A pointer to the entry to insert.
*/
-void lookup_table_insert(struct lookup_table *table,
+void lookup_table_insert(struct lookup_table *table,
struct lookup_table_entry *lte)
{
size_t i = lte->hash_short % table->capacity;
void lte_decrement_refcnt(struct lookup_table_entry *lte,
struct lookup_table *table)
{
- wimlib_assert(lte);
- wimlib_assert(lte->refcnt);
+ wimlib_assert(lte != NULL);
+ wimlib_assert(lte->refcnt != 0);
if (--lte->refcnt == 0) {
lookup_table_unlink(table, lte);
#ifdef WITH_FUSE
}
#ifdef WITH_FUSE
-void 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)
{
- wimlib_assert(lte);
- wimlib_assert(lte->num_opened_fds);
- if (--lte->num_opened_fds == 0 && lte->refcnt == 0)
- finalize_lte(lte);
+ wimlib_assert(lte != NULL);
+ if (lte->num_opened_fds != 0) {
+ if (--lte->num_opened_fds == 0 && lte->refcnt == 0)
+ finalize_lte(lte);
+ }
}
#endif
-/*
+/*
* Calls a function on all the entries in the lookup table. Stop early and
* return nonzero if any call to the function returns nonzero.
*/
-int for_lookup_table_entry(struct lookup_table *table,
+int for_lookup_table_entry(struct lookup_table *table,
int (*visitor)(struct lookup_table_entry *, void *),
void *arg)
{
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);
}
cur_entry->wim = w;
cur_entry->resource_location = RESOURCE_IN_WIM;
-
+
p = get_resource_entry(buf, &cur_entry->resource_entry);
p = get_u16(p, &cur_entry->part_number);
p = get_u32(p, &cur_entry->refcnt);
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)) {
goto out_free_cur_entry;
}
+ /* Ordinarily, no two streams should share the same SHA1 message
+ * digest. However, this constraint can be broken for metadata
+ * resources--- two identical images will have the same metadata
+ * resource, but their lookup table entries are not shared. */
duplicate_entry = __lookup_resource(table, cur_entry->hash);
- if (duplicate_entry) {
+ if (duplicate_entry
+ && !((duplicate_entry->resource_entry.flags & WIM_RESHDR_FLAG_METADATA)
+ && cur_entry->resource_entry.flags & WIM_RESHDR_FLAG_METADATA))
+ {
ERROR("The WIM lookup table contains two entries with the "
"same SHA1 message digest!");
ERROR("The first entry is:");
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");
ret = WIMLIB_ERR_INVALID_LOOKUP_TABLE_ENTRY;
goto out_free_cur_entry;
}
+ if ((cur_entry->resource_entry.flags & WIM_RESHDR_FLAG_METADATA)
+ && cur_entry->refcnt != 1)
+ {
+ ERROR("Found metadata resource with refcnt != 1:");
+ print_lookup_table_entry(cur_entry);
+ ret = WIMLIB_ERR_INVALID_LOOKUP_TABLE_ENTRY;
+ goto out_free_cur_entry;
+ }
lookup_table_insert(table, cur_entry);
}
}
-/*
+/*
* Writes a lookup table entry to the output file.
*/
int write_lookup_table_entry(struct lookup_table_entry *lte, void *__out)
return 0;
}
+/* Writes the lookup table to the output file. */
+int write_lookup_table(struct lookup_table *table, FILE *out,
+ struct resource_entry *out_res_entry)
+{
+ off_t start_offset, end_offset;
+ int ret;
+
+ start_offset = ftello(out);
+ if (start_offset == -1)
+ return WIMLIB_ERR_WRITE;
+
+ ret = for_lookup_table_entry(table, write_lookup_table_entry, out);
+ if (ret != 0)
+ return ret;
+
+ end_offset = ftello(out);
+ if (end_offset == -1)
+ return WIMLIB_ERR_WRITE;
+
+ out_res_entry->offset = start_offset;
+ out_res_entry->size = end_offset - start_offset;
+ out_res_entry->original_size = end_offset - start_offset;
+ out_res_entry->flags = WIM_RESHDR_FLAG_METADATA;
+
+ return 0;
+}
+
int lte_zero_real_refcnt(struct lookup_table_entry *lte, void *ignore)
{
return 0;
}
-int lte_free_extracted_file(struct lookup_table_entry *lte, void *ignone)
+int lte_zero_extracted_file(struct lookup_table_entry *lte, void *ignore)
{
- FREE(lte->extracted_file);
lte->extracted_file = NULL;
return 0;
}
+int lte_free_extracted_file(struct lookup_table_entry *lte, void *ignore)
+{
+ if (lte->extracted_file != NULL) {
+ FREE(lte->extracted_file);
+ lte->extracted_file = NULL;
+ }
+ return 0;
+}
+
void print_lookup_table_entry(const struct lookup_table_entry *lte)
{
if (!lte) {
putchar('\n');
return;
}
- printf("Offset = %"PRIu64" bytes\n",
+ printf("Offset = %"PRIu64" bytes\n",
lte->resource_entry.offset);
- printf("Size = %"PRIu64" bytes\n",
+ printf("Size = %"PRIu64" bytes\n",
(u64)lte->resource_entry.size);
- printf("Original size = %"PRIu64" bytes\n",
+ printf("Original size = %"PRIu64" bytes\n",
lte->resource_entry.original_size);
printf("Part Number = %hu\n", lte->part_number);
printf("Reference Count = %u\n", lte->refcnt);
}
/*
- * Prints the lookup table of a WIM file.
+ * Prints the lookup table of a WIM file.
*/
WIMLIBAPI void wimlib_print_lookup_table(WIMStruct *w)
{
- for_lookup_table_entry(w->lookup_table,
+ for_lookup_table_entry(w->lookup_table,
do_print_lookup_table_entry,
NULL);
}
-/*
+/*
* Looks up an entry in the lookup table.
*/
struct lookup_table_entry *
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)
}
#ifdef WITH_FUSE
-/*
+/*
* Finds the dentry, lookup table entry, and stream index for a WIM file stream,
* given a path name.
*
}
#endif
-static void inode_resolve_ltes(struct inode *inode, struct lookup_table *table)
+void inode_resolve_ltes(struct inode *inode, struct lookup_table *table)
{
struct lookup_table_entry *lte;
inode->resolved = false;
}
-/* Resolve a dentry's lookup table entries
+/* Resolve a dentry's lookup table entries
*
* This replaces the SHA1 hash fields (which are used to lookup an entry in the
* lookup table) with pointers directly to the lookup table entries. A circular
*/
struct lookup_table_entry *
inode_unnamed_lte(const struct inode *inode,
- const struct lookup_table *table)
+ const struct lookup_table *table)
{
if (inode->resolved)
return inode_unnamed_lte_resolved(inode);
return inode_unnamed_lte_unresolved(inode, table);
}
+static int lte_add_stream_size(struct lookup_table_entry *lte,
+ void *total_bytes_p)
+{
+ *(u64*)total_bytes_p += lte->resource_entry.size;
+ return 0;
+}
+
+u64 lookup_table_total_stream_size(struct lookup_table *table)
+{
+ u64 total_size = 0;
+ for_lookup_table_entry(table, lte_add_stream_size, &total_size);
+ return total_size;
+}