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#!/bin/bash
#
# netconsole This loads the netconsole module with the configured parameters.
#
# chkconfig: - 50 50
# description: Initializes network console logging
# config: /etc/sysconfig/netconsole
#
# Copyright 2002 Red Hat, Inc.
#
# Based in part on a shell script by
# Andreas Dilger Sep 26, 2001
PATH=/sbin:/usr/sbin:$PATH
RETVAL=0
SERVER_ADDRESS_RESOLUTION=
# Check that networking is up.
. /etc/sysconfig/network
# Source function library.
. /etc/rc.d/init.d/functions
# Default values
LOCALPORT=6666
DEV=
SYSLOGADDR=
SYSLOGPORT=514
SYSLOGMACADDR=
kernel=`uname -r | cut -d. -f1-2`
usage ()
{
echo $"Usage: $0 {start|stop|status|restart|condrestart}" 1>&2
RETVAL=1
}
print_address_info ()
{
local host=$1
local route via target
route=$(LANG=C ip -o route get to $host/32)
[ -z "$DEV" ] && DEV=$(echo $route | sed "s|.* dev \([^ ]*\).*|\1|")
echo "DEV=$DEV"
echo "LOCALADDR=$(echo $route | sed "s|.* src \([^ ]*\).*|\1|")"
if echo $route | grep -q " via " ; then
via=$(echo $route | sed "s|.* via \([^ ]*\).*|\1|")
target=$via
else
target=$host
fi
if [ -z "$SYSLOGMACADDR" ]; then
arp=$(LANG=C arping -c 1 -I $DEV $target 2>/dev/null | awk '/ reply from .*[.*]/ { print gensub(".* reply from .* \\[(.*)\\].*","\\1","G") }')
[ -n "$arp" ] && echo "SYSLOGMACADDR=$arp"
fi
}
netconsole_failure ()
{
echo -n "$1"
failure
echo
exit 1
}
start ()
{
[ -f /etc/sysconfig/netconsole ] || exit 0
. /etc/sysconfig/netconsole
SYSLOGOPTS=
# syslogd server, if any
if [ -n "$SYSLOGADDR" ]; then
if ! [[ "$SYSLOGADDR" =~ "^([0-9]{1,3}\.){3}[0-9]{1,3}$" ]]; then
SYSLOGADDR=$(LANG=C host $SYSLOGADDR 2>/dev/null | awk '/has address / { print $NF }')
fi
fi
if [ -z "$SYSLOGADDR" ] ; then
echo $"Server address not specified in /etc/sysconfig/netconsole" 1>&2
exit 1
fi
eval $(print_address_info $SYSLOGADDR)
if [ -z "$SYSLOGMACADDR" ]; then
echo $"netconsole: can't resolve MAC address of $SYSLOGADDR" 1>&2
netconsole_failure "syslog server address resolution"
fi
SYSLOGOPTS="netconsole=$LOCALPORT@$LOCALADDR/$DEV,$SYSLOGPORT@$SYSLOGADDR/$SYSLOGMACADDR "
/usr/bin/logger -p daemon.info -t netconsole: inserting netconsole module with arguments \
$SYSLOGOPTS
if [ -n "$SYSLOGOPTS" ]; then
action $"Initializing netconsole" modprobe netconsole \
$SYSLOGOPTS
fi
touch /var/lock/subsys/netconsole
}
stop ()
{
if /sbin/lsmod | grep netconsole >/dev/null 2>&1 ; then
action $"Disabling netconsole" rmmod netconsole;
fi
rm -f /var/lock/subsys/netconsole
}
status ()
{
if /sbin/lsmod | grep netconsole >/dev/null 2>&1 ; then
echo $"netconsole module loaded"
RETVAL=0
else
echo $"netconsole module not loaded"
RETVAL=3
fi
}
restart ()
{
stop
start
}
condrestart ()
{
[ -e /var/lock/subsys/netconsole ] && restart
}
case "$1" in
stop) stop ;;
status) status ;;
start|restart|reload) restart ;;
condrestart) condrestart ;;
*) usage ;;
esac
exit $RETVAL
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