+ /* Refuse messages if kdbus and dbus1 cookie doesn't match up */
+ if ((uint64_t) m->header->serial != k->cookie) {
+ r = -EBADMSG;
+ goto fail;
+ }
+
+ /* Refuse messages where the reply flag doesn't match up */
+ if (!(m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED) != !!(k->flags & KDBUS_MSG_FLAGS_EXPECT_REPLY)) {
+ r = -EBADMSG;
+ goto fail;
+ }
+
+ /* Refuse reply messages where the reply cookie doesn't match up */
+ if ((m->header->flags & BUS_MESSAGE_NO_REPLY_EXPECTED) && m->reply_cookie != k->cookie_reply) {
+ r = -EBADMSG;
+ goto fail;
+ }
+
+ /* Refuse messages where the autostart flag doesn't match up */
+ if (!(m->header->flags & BUS_MESSAGE_NO_AUTO_START) != !(k->flags & KDBUS_MSG_FLAGS_NO_AUTO_START)) {
+ r = -EBADMSG;
+ goto fail;
+ }
+