+LTTNG_HIDDEN
+ssize_t lttng_trigger_create_from_buffer(const char *buf,
+ struct lttng_trigger **trigger)
+{
+ ssize_t ret, trigger_size;
+ struct lttng_condition *condition = NULL;
+ struct lttng_action *action = NULL;
+
+ if (!buf || !trigger) {
+ ret = -1;
+ goto end;
+ }
+
+ ret = lttng_condition_create_from_buffer(buf, &condition);
+ if (ret < 0) {
+ goto end;
+ }
+
+ trigger_size = ret;
+ buf += ret;
+ ret = lttng_action_create_from_buffer(buf, &action);
+ if (ret < 0) {
+ goto end;
+ }
+
+ trigger_size += ret;
+ *trigger = lttng_trigger_create(condition, action);
+ if (!*trigger) {
+ goto error;
+ }
+ ret = trigger_size;
+end:
+ return ret;
+error:
+ lttng_condition_destroy(condition);
+ lttng_action_destroy(action);
+ return ret;
+}
+
+/*
+ * Returns the size of a trigger's condition and action.
+ * Both elements are stored contiguously, see their "*_comm" structure
+ * for the detailed format.
+ */
+LTTNG_HIDDEN