1#!/usr/sbin/dtrace -s 2/* 3 * Copyright (c) 2015 George V. Neville-Neil 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 * $FreeBSD$ 28 * 29 * The udptrack D script shows various information about UDP 30 * data that are sent and received on the host. 31 * 32 * Usage: udptrack 33 */ 34 35#pragma D option quiet 36udp:kernel::receive 37{ 38 printf("Received %d bytes of data from %s:%d\n", 39 args[4]->udp_length, 40 args[2]->ip_saddr, 41 args[4]->udp_sport); 42 tracemem(args[4]->udp_hdr, 64); 43} 44 45udp:kernel::send 46{ 47 printf("Sent %d bytes of data to %s:%d\n", 48 args[4]->udp_length, 49 args[2]->ip_daddr, 50 args[4]->udp_dport); 51 tracemem(args[4]->udp_hdr, 64); 52} 53 54