[PATCH] serial proc gives info on keycounts which can sometiems be abused

For 2.4.x we made the file r-------- but for 2.6 we can do a nicer job

drivers/serial/core.c

@@ -1667,6 +1667,8 @@ static int uart_line_info(char *buf, struct uart_driver *drv, int i)
 		return ret + 1;
 	}
 
+	if(capable(CAP_SYS_ADMIN))
+	{
 		status = port->ops->get_mctrl(port);
 
 		ret += sprintf(buf + ret, " tx:%d rx:%d",
@@ -1706,6 +1708,9 @@ static int uart_line_info(char *buf, struct uart_driver *drv, int i)
 		strcat(stat_buf, "\n");
 	
 		ret += sprintf(buf + ret, stat_buf);
+	}
+#undef STATBIT
+#undef INFOBIT
 	return ret;
 }