+static int method_get_product_uuid(sd_bus_message *m, void *userdata, sd_bus_error *error) {
+ _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
+ Context *c = userdata;
+ int interactive, r;
+
+ assert(m);
+ assert(c);
+
+ if (!c->has_uuid)
+ return sd_bus_error_set(error, BUS_ERROR_NO_PRODUCT_UUID, "Failed to read product UUID from /sys/class/dmi/id/product_uuid");
+
+ r = sd_bus_message_read(m, "b", &interactive);
+ if (r < 0)
+ return r;
+
+ r = bus_verify_polkit_async(
+ m,
+ CAP_SYS_ADMIN,
+ "org.freedesktop.hostname1.get-product-uuid",
+ NULL,
+ interactive,
+ UID_INVALID,
+ &c->polkit_registry,
+ error);
+ if (r < 0)
+ return r;
+ if (r == 0)
+ return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
+
+ r = sd_bus_message_new_method_return(m, &reply);
+ if (r < 0)
+ return r;
+
+ r = sd_bus_message_append_array(reply, 'y', &c->uuid, sizeof(c->uuid));
+ if (r < 0)
+ return r;
+
+ return sd_bus_send(NULL, reply, NULL);
+}
+