imd = wim_get_current_image_metadata(w);
if (!imd->modified) {
DEBUG("Freeing image %u", w->current_image);
- destroy_image_metadata(imd, NULL);
- imd->root_dentry = NULL;
- imd->security_data = NULL;
- INIT_HLIST_HEAD(&imd->inode_list);
+ destroy_image_metadata(imd, NULL, false);
}
}
w->current_image = image;
- imd = &w->image_metadata[image - 1];
+ imd = wim_get_current_image_metadata(w);
if (imd->root_dentry) {
ret = 0;
} else {
if (boot_idx < 0 || boot_idx > w->hdr.image_count)
return WIMLIB_ERR_INVALID_IMAGE;
w->hdr.boot_idx = boot_idx;
-
- if (boot_idx == 0) {
- memset(&w->hdr.boot_metadata_res_entry, 0,
- sizeof(struct resource_entry));
- } else {
- memcpy(&w->hdr.boot_metadata_res_entry,
- &w->image_metadata[
- boot_idx - 1].metadata_lte->resource_entry,
- sizeof(struct resource_entry));
- }
-
return 0;
}
}
if (w->hdr.image_count != 0 && w->hdr.part_number == 1) {
- w->image_metadata = CALLOC(w->hdr.image_count,
- sizeof(struct wim_image_metadata));
-
- if (!w->image_metadata) {
- ERROR("Failed to allocate memory for %u image metadata structures",
- w->hdr.image_count);
+ w->image_metadata = new_image_metadata_array(w->hdr.image_count);
+ if (!w->image_metadata)
return WIMLIB_ERR_NOMEM;
- }
}
ret = read_lookup_table(w);
void
destroy_image_metadata(struct wim_image_metadata *imd,
- struct wim_lookup_table *table)
+ struct wim_lookup_table *table,
+ bool free_metadata_lte)
{
free_dentry_tree(imd->root_dentry, table);
+ imd->root_dentry = NULL;
free_security_data(imd->security_data);
- if (table)
+ imd->security_data = NULL;
+
+ if (free_metadata_lte) {
free_lookup_table_entry(imd->metadata_lte);
+ imd->metadata_lte = NULL;
+ }
+ INIT_LIST_HEAD(&imd->unhashed_streams);
+ INIT_HLIST_HEAD(&imd->inode_list);
+}
+
+void
+put_image_metadata(struct wim_image_metadata *imd,
+ struct wim_lookup_table *table)
+{
+ if (imd && --imd->refcnt == 0) {
+ destroy_image_metadata(imd, table, true);
+ FREE(imd);
+ }
+}
+
+/* Appends the specified image metadata structure to the array of image metadata
+ * for a WIM, and increments the image count. */
+int
+append_image_metadata(WIMStruct *w, struct wim_image_metadata *imd)
+{
+ struct wim_image_metadata **imd_array;
+
+ DEBUG("Reallocating image metadata array for image_count = %u",
+ w->hdr.image_count + 1);
+ imd_array = REALLOC(w->image_metadata,
+ sizeof(w->image_metadata[0]) * (w->hdr.image_count + 1));
+
+ if (!imd_array)
+ return WIMLIB_ERR_NOMEM;
+ w->image_metadata = imd_array;
+ imd_array[w->hdr.image_count++] = imd;
+ return 0;
+}
+
+
+struct wim_image_metadata *
+new_image_metadata()
+{
+ struct wim_image_metadata *imd;
+
+ imd = CALLOC(1, sizeof(*imd));
+ if (imd) {
+ imd->refcnt = 1;
+ INIT_HLIST_HEAD(&imd->inode_list);
+ INIT_LIST_HEAD(&imd->unhashed_streams);
+ DEBUG("Created new image metadata (refcnt=1)");
+ } else {
+ ERROR_WITH_ERRNO("Failed to allocate new image metadata structure");
+ }
+ return imd;
+}
+
+struct wim_image_metadata **
+new_image_metadata_array(unsigned num_images)
+{
+ struct wim_image_metadata **imd_array;
+
+ DEBUG("Creating new image metadata array for %u images",
+ num_images);
+
+ imd_array = CALLOC(num_images, sizeof(imd_array[0]));
+
+ if (!imd_array) {
+ ERROR("Failed to allocate memory for %u image metadata structures",
+ num_images);
+ return NULL;
+ }
+ for (unsigned i = 0; i < num_images; i++) {
+ imd_array[i] = new_image_metadata();
+ if (!imd_array[i]) {
+ for (unsigned j = 0; j < i; j++)
+ put_image_metadata(imd_array[j], NULL);
+ FREE(imd_array);
+ return NULL;
+ }
+ }
+ return imd_array;
}
/* Frees the memory for the WIMStruct, including all internal memory; also
FREE(w->xml_data);
free_wim_info(w->wim_info);
if (w->image_metadata) {
- for (unsigned i = 0; i < w->hdr.image_count; i++) {
- destroy_image_metadata(&w->image_metadata[i], NULL);
- free_lookup_table_entry(w->image_metadata[i].metadata_lte);
- }
+ for (unsigned i = 0; i < w->hdr.image_count; i++)
+ put_image_metadata(w->image_metadata[i], NULL);
FREE(w->image_metadata);
}
#ifdef WITH_NTFS_3G