mirror of https://github.com/aredn/aredn.git
79 lines
2.6 KiB
Bash
Executable File
79 lines
2.6 KiB
Bash
Executable File
#!/bin/sh
|
|
true <<'LICENSE'
|
|
Part of AREDN -- Used for creating Amateur Radio Emergency Data Networks
|
|
Copyright (C) 2018 Joe Ayers AE6XE
|
|
See Contributors file for additional contributors
|
|
|
|
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 version 3 of the License.
|
|
|
|
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/>.
|
|
|
|
Additional Terms:
|
|
|
|
Additional use restrictions exist on the AREDN(TM) trademark and logo.
|
|
See AREDNLicense.txt for more info.
|
|
|
|
Attributions to the AREDN Project must be retained in the source code.
|
|
If importing this code into a new or existing project attribution
|
|
to the AREDN project must be added to the source code.
|
|
|
|
You must not misrepresent the origin of the material contained within.
|
|
|
|
Modified versions must be modified to attribute to the original source
|
|
and be marked in reasonable ways as differentiate it from the original
|
|
version.
|
|
|
|
LICENSE
|
|
|
|
# Look for hung 'iw' zombie processes prone to hang
|
|
# when available memory is low.
|
|
|
|
zombiepid="/tmp/clean_zombie.pid"
|
|
|
|
[ -e $zombiepid ] && [ -d "/proc/$(cat $zombiepid)" ] && exit
|
|
|
|
echo "$$" > $zombiepid
|
|
|
|
# wait for rssi_monitor and snrlog to run
|
|
sleep 20;
|
|
|
|
for pid in $(ps | grep -E "^\s*\d+\s+root\s+\d+\s+Z\s+\[iw\]"| sed -e "s/^\s*//"| cut -f1 -d\ )
|
|
do
|
|
|
|
# found an "iw" zombie
|
|
sleep 10 # in case process is naturally closing and needs more time
|
|
if [ -d "/proc/$pid" ] ; then
|
|
date >> /tmp/zombie.log
|
|
ps | grep -E "^\s*${pid}\s+" | grep -v grep | tail -1 >> /tmp/zombie.log
|
|
ppid="$(grep -i ppid < /proc/$pid/status | cut -f2)"
|
|
if [ -d "/proc/$ppid" ] ; then
|
|
ps | grep -E "^\s*${ppid}\s+" | grep -v grep | tail -1 >> /tmp/zombie.log
|
|
grep crond /proc/$ppid/status 2>&1 > /dev/null
|
|
if [ $? -ne 0 -a "$ppid" -gt 1 ]; then
|
|
|
|
# kill the zombie's parent process to free up resources
|
|
kill -9 "$ppid" 2>&1 >> /tmp/zombie.log
|
|
echo "Killed $ppid" >> /tmp/zombie.log
|
|
if [ "$(wc -l /tmp/zombie.log | cut -f1 -d\ )" -gt 300 ] ; then
|
|
|
|
# keep file size in check
|
|
cp /tmp/zombie.log /tmp/zombie.tmp
|
|
tail -275 /tmp/zombie.tmp > /tmp/zombie.log
|
|
rm -f /tmp/zombie.tmp
|
|
fi
|
|
fi
|
|
fi
|
|
echo "" >> /tmp/zombie.log
|
|
fi
|
|
done
|
|
|
|
rm $zombiepid
|