rem: return 0;
add: message.op = op; message.device = nsida; message.toDevice = nsidb; message.parentNode = vnida; message.targetNode = vnidb; message.node = vnidc;  if (name != NULL) { strcpy(message.name, name);  } else message.name[0] = '\0';  return write_port(gTrackerPort, what, &message, sizeof(message));
context: send_notification(port_id port, long token, ulong what, long op, nspace_id nsida,		nspace_id nsidb, vnode_id vnida, vnode_id vnidb, vnode_id vnidc,		const char *name){#ifdef DEBUG	printf("send_notification... op = %s, name = %s, port = %ld, token = %ld\n",		op == B_ENTRY_CREATED ? "B_ENTRY_CREATED" : "B_ENTRY_REMOVED", name, port, token);#endif	return 0;}