107 static fd_set *ibitsp, *obitsp, *xbitsp;  variable
862 	if (ibitsp)  in process_rings()
863 	    free(ibitsp);  in process_rings()
870 	if ((ibitsp = (fd_set *)malloc(fdsn)) == NULL)  in process_rings()
876 	memset(ibitsp, 0, fdsn);  in process_rings()
886 	FD_SET(tin, ibitsp);  in process_rings()
888 	FD_SET(net, ibitsp);  in process_rings()
891     if ((c = select(maxfd + 1, ibitsp, obitsp, xbitsp,  in process_rings()
921     if (FD_ISSET(net, ibitsp)) {  in process_rings()
924 	FD_CLR(net, ibitsp);  in process_rings()
1034     if (FD_ISSET(tin, ibitsp)) {  in process_rings()
1035 	FD_CLR(tin, ibitsp);  in process_rings()