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udp track shows UDP data as it arrives and leaves the system

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This commit is contained in:
George V. Neville-Neil 2015-03-08 04:29:41 +00:00
parent 78549b94cd
commit 1dfaa6f1aa
2 changed files with 56 additions and 1 deletions
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3
share/dtrace/Makefile
View File

@ -16,9 +16,10 @@ SCRIPTS= disklatency \
disklatencycmd \
hotopen \
nfsclienttime \
udptrack \
tcpstate \
tcptrack \
tcpconn
tcpconn
SCRIPTSDIR= ${SHAREDIR}/dtrace

54
share/dtrace/udptrack Executable file
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@ -0,0 +1,54 @@
#!/usr/sbin/dtrace -s
/*
* Copyright (c) 2015 George V. Neville-Neil
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*
* The udptrack D script shows various information about UDP
* data that are sent and received on the host.
*
* Usage: udptrack
*/
#pragma D option quiet
udp:kernel::receive
{
printf("Received %d bytes of data from %s:%d\n",
args[4]->udp_length,
args[2]->ip_daddr,
args[3]->udps_rport);
tracemem(args[4]->udp_hdr, 64);
}
udp:kernel::send
{
printf("Sent %d bytes of data to %s:%d\n",
args[4]->udp_length,
args[2]->ip_daddr,
args[3]->udps_rport);
tracemem(args[4]->udp_hdr, 64);
}