774     int		to_cs[2], from_cs[2];  in cs_create_connection()  local
799     to_cs[0] = to_cs[1] = from_cs[0] = from_cs[1] = -1;  in cs_create_connection()
800     if (pipe(to_cs) < 0 || pipe(from_cs) < 0)  in cs_create_connection()
804 	if (to_cs[0] != -1)  in cs_create_connection()
805 	    (void)close(to_cs[0]);  in cs_create_connection()
806 	if (to_cs[1] != -1)  in cs_create_connection()
807 	    (void)close(to_cs[1]);  in cs_create_connection()
821 	if (dup2(to_cs[0], STDIN_FILENO) == -1)  in cs_create_connection()
829 	(void)close(to_cs[1]);  in cs_create_connection()
946 	if ((csinfo[i].to_fp = fdopen(to_cs[1], "w")) == NULL)  in cs_create_connection()
952 	(void)close(to_cs[0]);  in cs_create_connection()