assert(!c->need_offsets || i == c->n_offsets);
assert(c->need_offsets || n_variable == 0);
- if (n_variable <= 0) {
+ if (isempty(c->signature)) {
+ /* The unary type is encoded as fixed 1 byte padding */
+ a = message_extend_body(m, 1, 1, add_offset, false);
+ if (!a)
+ return -ENOMEM;
+
+ *a = 0;
+ } else if (n_variable <= 0) {
int alignment = 1;
/* Structures with fixed-size members only have to be
assert(n_offsets);
if (isempty(signature)) {
+ /* Unary type is encoded as *fixed* 1 byte padding */
+ r = message_peek_body(m, &m->rindex, 1, 1, &q);
+ if (r < 0)
+ return r;
+
+ if (*(uint8_t *) q != 0)
+ return -EBADMSG;
+
*item_size = 0;
*offsets = NULL;
*n_offsets = 0;
if (r < 0)
return r;
- } else if (c->item_size <= 0) {
-
- /* gvariant empty struct */
- *item_size = 0;
- *offsets = NULL;
- *n_offsets = 0;
} else
/* gvariant with contents */
return build_struct_offsets(m, contents, c->item_size, item_size, offsets, n_offsets);
w->before = before;
w->begin = m->rindex;
- w->end = m->rindex + c->item_size;
+
+ /* Unary type has fixed size of 1, but virtual size of 0 */
+ if (BUS_MESSAGE_IS_GVARIANT(m) &&
+ type == SD_BUS_TYPE_STRUCT &&
+ isempty(signature))
+ w->end = m->rindex + 0;
+ else
+ w->end = m->rindex + c->item_size;
w->array_size = array_size;
w->item_size = item_size;