/usr/bin/undertaker-tracecontrol is in undertaker 1.6.1-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 | #!/bin/bash
# Copyright (C) 2012 Bernhard Heinloth <bernhard@heinloth.net>
# Copyright (C) 2012 Valentin Rothberg <valentinrothberg@gmail.com>
# Copyright (C) 2012 Andreas Ruprecht <rupran@einserver.de>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
set -e
DEBUGFSMOUNTPOINT=/sys/kernel/debug
DEBUGFSFTRACE=$DEBUGFSMOUNTPOINT/tracing
TRACEOUTFILE=/run/undertaker-trace.out
TRACEUTIL=undertaker-traceutil
if [ ! `id -u` -eq 0 ] ; then
echo "This operation requires root - aborting..."
exit 1
fi
if ( ! cat /boot/config-`uname -r` | grep -q "CONFIG_FTRACE=y" ) && \
( ! zcat /proc/config.gz | grep -q "CONFIG_FTRACE=y" ) ; then
echo "Warning: No ftrace in current kernel available..."
fi
function initftrace {
if [ ! -d $DEBUGFSMOUNTPOINT ] ; then
mount -t debugfs none $(DEBUGFSMOUNTPOINT)
fi
if [ ! -d $DEBUGFSMOUNTPOINT ] ; then
echo "Could not mount debugfs to $DEBUGFSMOUNTPOINT - aborting..."
exit 1
fi
echo 0 > $DEBUGFSFTRACE/tracing_on
echo sym-addr > $DEBUGFSFTRACE/trace_options
echo sym-offset > $DEBUGFSFTRACE/trace_options
echo "function" > $DEBUGFSFTRACE/current_tracer
echo > $DEBUGFSFTRACE/set_ftrace_notrace
}
function tracefile {
echo "Tracing output is written to $TRACEOUTFILE"
touch $TRACEOUTFILE
chmod a+rw $TRACEOUTFILE
}
function help {
echo "Usage: $0 [start|stop|mount|module] [tracefile (optional)]"
}
if [ $# -gt 0 ] ; then
if [ $# -eq 2 ] ; then
TRACEOUTFILE=$2
fi
# prefer local version in same directory
if [ -x $TRACEUTIL ] ; then
TRACEUTIL=./$TRACEUTIL
fi
case "$1" in
start )
initftrace
tracefile
echo "Starting trace..."
echo 1 > $DEBUGFSFTRACE/tracing_on
if ! $TRACEUTIL $DEBUGFSFTRACE/trace_pipe $TRACEOUTFILE $DEBUGFSFTRACE/set_ftrace_notrace ; then
echo "Traceutil stopped!"
fi
echo 0 > $DEBUGFSFTRACE/tracing_on
;;
mount )
initftrace
;;
module )
initftrace
tracefile
echo "Starting Module trace..."
echo 1 > $DEBUGFSFTRACE/tracing_on
if ! $TRACEUTIL $DEBUGFSFTRACE/trace_pipe $TRACEOUTFILE $DEBUGFSFTRACE/set_ftrace_notrace /proc/modules ; then
echo "Traceutil stopped!"
fi
echo 0 > $DEBUGFSFTRACE/tracing_on
;;
stop )
echo 0 > $DEBUGFSFTRACE/tracing_on
if ! killall $TRACEUTIL ; then
echo "Failed to kill $TRACEUTIL"
fi
;;
* )
echo "Command '$1' could not be recognized..."
help
;;
esac
else
help
fi
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