diff options
Diffstat (limited to 'etc/rc.d/init.d/netconsole')
| -rwxr-xr-x | etc/rc.d/init.d/netconsole | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/etc/rc.d/init.d/netconsole b/etc/rc.d/init.d/netconsole new file mode 100755 index 00000000..3f2872dd --- /dev/null +++ b/etc/rc.d/init.d/netconsole @@ -0,0 +1,164 @@ +#!/bin/bash +# +# netconsole This loads the netconsole module with the configured parameters. +# +# chkconfig: - 50 50 +# description: Initializes network console logging +# config: /etc/sysconfig/netconsole +# +### BEGIN INIT INFO +# Provides: netconsole +# Required-Start: $network +# Short-Description: Initializes network console logging +# Description: Initializes network console logging of kernel messages. +### END INIT INFO + +# Copyright 2002 Red Hat, Inc. +# +# Based in part on a shell script by +# Andreas Dilger <adilger@turbolinux.com> Sep 26, 2001 + +PATH=/sbin:/usr/sbin:$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=2 +} + +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 [[ $route == *" via "* ]] ; then + via=$(echo $route | sed "s|.* via \([^ ]*\).*|\1|") + target=$via + else + target=$host + fi + if [ -z "$SYSLOGMACADDR" ]; then + arp=$(LANG=C /sbin/arping -f -c 1 -I $DEV $target 2>/dev/null | awk '/ reply from .*[.*]/ { print gensub(".* reply from .* \\[(.*)\\].*","\\1","G"); exit }') + [ -n "$arp" ] && echo "SYSLOGMACADDR=$arp" + fi +} + +start () +{ + [ -f /etc/sysconfig/netconsole ] || exit 6 + . /etc/sysconfig/netconsole + + SYSLOGOPTS= + # syslogd server, if any + if [ -n "$SYSLOGADDR" ]; then + # IPv6 regex also covers 4to6, zero-compressed, and link-local addresses with zone-index addresses. + # It should also cover IPv4-embedded, IPv4-mapped, and IPv4-translated IPv6 addresses. + # Taken from: http://stackoverflow.com/a/17871737/3481531 + IPv4_regex="^([0-9]{1,3}\.){3}[0-9]{1,3}$" + IPv6_regex="^(([0-9a-fA-F]{1,4}:){7,7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4}){0,1}:){0,1}((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9])\.){3,3}(25[0-5]|(2[0-4]|1{0,1}[0-9]){0,1}[0-9]))$" + if ! [[ "$SYSLOGADDR" =~ $IPv4_regex ]] && ! [[ "$SYSLOGADDR" =~ $IPv6_regex ]]; then + # Use IPv4 by default: + SYSLOGADDR="$(LANG=C getent ahostsv4 $SYSLOGADDR 2> /dev/null)" + + # Try IPv6 in case IPv4 resolution has failed: + if [[ $? -eq 2 ]]; then + SYSLOGADDR="$(LANG=C getent ahostsv6 $SYSLOGADDR 2> /dev/null)" + fi + + if [[ $? -ne 0 ]]; then + echo $"Unable to resolve IP address specified in /etc/sysconfig/netconsole" 1>&2 + exit 6 + fi + + SYSLOGADDR="$(echo "$SYSLOGADDR" | head -1 | cut --delimiter=' ' --fields=1)" + fi + fi + if [ -z "$SYSLOGADDR" ] ; then + echo $"Server address not specified in /etc/sysconfig/netconsole" 1>&2 + exit 6 + fi + eval $(print_address_info $SYSLOGADDR) + + if [ -z "$SYSLOGMACADDR" ]; then + echo $"netconsole: can't resolve MAC address of $SYSLOGADDR" 1>&2 + exit 1 + fi + + SYSLOGOPTS="netconsole=$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 \ + $SYSLOGOPTS + [ "$?" != "0" ] && RETVAL=1 + fi + touch /var/lock/subsys/netconsole +} + +stop () +{ + if /sbin/lsmod | grep netconsole >/dev/null 2>&1 ; then + action $"Disabling netconsole" rmmod netconsole; + [ "$?" != "0" ] && RETVAL=1 + 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|force-reload) restart ;; + condrestart) condrestart ;; + *) usage ;; +esac + +exit $RETVAL |