bind/named.init
2006-10-30 12:10:16 +00:00

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#!/bin/bash
#
# named This shell script takes care of starting and stopping
# named (BIND DNS server).
#
# chkconfig: - 13 87
# description: named (BIND) is a Domain Name Server (DNS) \
# that is used to resolve host names to IP addresses.
# probe: true
# Source function library.
. /etc/rc.d/init.d/functions
# Source networking configuration.
[ -r /etc/sysconfig/network ] && . /etc/sysconfig/network
# Check that networking is up.
[ "${NETWORKING}" = "no" ] && exit 1
[ -r /etc/sysconfig/named ] && . /etc/sysconfig/named
# Don't kill named during clean-up
NAMED_SHUTDOWN_TIMEOUT=${NAMED_SHUTDOWN_TIMEOUT:-100}
if [ -n "$ROOTDIR" ]; then
ROOTDIR=`echo $ROOTDIR | sed 's#//*#/#g;s#/$##'`;
rdl=`/usr/bin/readlink $ROOTDIR`;
if [ -n "$rdl" ]; then
ROOTDIR="$rdl";
fi;
fi
RETVAL=0
named='named'
if [[ "$ENABLE_SDB" = [yY1]* ]] && [ -x /usr/sbin/named_sdb ]; then
named='named_sdb';
fi;
prog=$named
[ -x /usr/sbin/$named ] || exit 1
nmdcOption()
{ let i=0;
for a in $*;
do ((++i));
if [ $a = -c ]; then
((++i));
eval 'echo $'$i;
elif [[ $a = -c* ]]; then
echo ${a#-c};
fi;
done;
}
named_c_option=`nmdcOption $OPTIONS`;
named_conf=${named_c_option:-/etc/named.conf};
if [ ! -r ${ROOTDIR}${named_conf} ] ; then
if [ -z "$named_c_option" ] && [ -r ${ROOTDIR}/etc/named.caching-nameserver.conf ]; then
named_conf='/etc/named.caching-nameserver.conf';
OPTIONS="$OPTIONS -c ${named_conf}";
else
echo Locating $ROOTDIR/${named_conf} failed:
failure
echo;
exit 1;
fi;
fi;
dbusEnabled=0;
for a in $OPTIONS; do
if [ $a = "-D" ]; then
dbusEnabled=1;
fi;
done
if [ $dbusEnabled -eq 0 ] && [ -z "$DISABLE_NAMED_DBUS" ] ; then
NetworkManagerEnabled=0
for l in 0 1 2 3 4 5 6; do
if /sbin/chkconfig --level=$l NetworkManager >/dev/null 2>&1; then
NetworkManagerEnabled=1;
fi;
done
if [ $NetworkManagerEnabled -eq 1 ]; then
OPTIONS="$OPTIONS -D";
fi;
dbusEnabled=1;
fi
start() {
# Start daemons.
echo -n $"Starting $named: "
if [ -n "`/sbin/pidof -o %PPID $named`" ]; then
echo -n $"$named: already running"
failure
echo
return 1
fi
ckcf_options='-z'; # enable named-checkzone for each zone (9.3.1+) !
if [ -n "${ROOTDIR}" -a "x${ROOTDIR}" != "x/" ]; then
OPTIONS="${OPTIONS} -t ${ROOTDIR}"
ckcf_options="$ckcf_options -t ${ROOTDIR}";
if [ -s /etc/localtime ]; then
cp -fp /etc/localtime ${ROOTDIR}/etc/localtime
fi;
if [ ! -d ${ROOTDIR}/proc ]; then
mkdir -p ${ROOTDIR}/proc
fi
if ! egrep -q '^/proc[[:space:]]+'${ROOTDIR}'/proc' /proc/mounts; then
mount --bind -n /proc ${ROOTDIR}/proc >/dev/null 2>&1
fi
if [ $dbusEnabled -eq 1 ]; then
if ! egrep -q '^/[^[:space:]]+[[:space:]]+'${ROOTDIR}'/var/run/dbus' /proc/mounts; then
mkdir -p ${ROOTDIR}/var/run/dbus
if [ ! -d /var/run/dbus ] ; then
mkdir -p /var/run/dbus ;
fi;
mount --bind -n /var/run/dbus ${ROOTDIR}/var/run/dbus > /dev/null 2>&1;
fi;
fi;
fi
no_write_master_zones=0
if [ -e /etc/selinux/config ]; then
. /etc/selinux/config
if [[ ( "$SELINUX" != 'disabled') && ("$SELINUXTYPE" != "") && (-d /etc/selinux/${SELINUXTYPE}) && (-e /etc/selinux/${SELINUXTYPE}/booleans || (-e /etc/selinux/${SELINUXTYPE}/booleans.local)) ]]; then
if [ -e /etc/selinux/${SELINUXTYPE}/booleans.local ]; then
. /etc/selinux/${SELINUXTYPE}/booleans.local;
else
. /etc/selinux/${SELINUXTYPE}/booleans;
fi;
if echo "$named_write_master_zones" | /bin/egrep -q '^[0-9]+$'; then
if [ "$named_write_master_zones" -eq 1 ] ; then
/bin/chown -f --from=root:named named:named $ROOTDIR/var/named
elif [ "$named_write_master_zones" -eq 0 ] ; then
/bin/chown -f --from=named:named root:named $ROOTDIR/var/named
fi;
fi;
else
no_write_master_zones=1
fi;
else
no_write_master_zones=1
fi;
if [ "$no_write_master_zones" -eq 1 ]; then
if [[ "$ENABLE_ZONE_WRITE" = [yY1]* ]]; then
/bin/chown -f --from=root:named named:named $ROOTDIR/var/named
elif [[ "$ENABLE_ZONE_WRITE" = [nN0]* ]]; then
/bin/chown -f --from=named:named root:named $ROOTDIR/var/named
fi;
fi
conf_ok=0;
if [ -x /usr/sbin/named-checkconf ] && [ -x /usr/sbin/named-checkzone ] && /usr/sbin/named-checkconf $ckcf_options ${named_conf} >/dev/null 2>&1; then
conf_ok=1;
else
RETVAL=$?;
fi
if [ $conf_ok -eq 1 ]; then
daemon /usr/sbin/$named -u named ${OPTIONS};
RETVAL=$?;
if [ $RETVAL -eq 0 ]; then
rm -f /var/run/named.pid
rm -f /var/run/named_sdb.pid 2>/dev/null
ln -s $ROOTDIR/var/run/named/named.pid /var/run/named.pid;
if [ "$named" = "named_sdb" ]; then
ln -s $ROOTDIR/var/run/named/named.pid /var/run/named_sdb.pid;
fi;
fi;
if [ -n "`/sbin/pidof -o %PPID $named`" ]; then
# Verify that named actually started (JM 2006-10-04)
if [ ! -e $ROOTDIR/var/run/named/named.pid ]; then
# If there is not a file containing the PID of the now running named daemon then create it (JM 2006-10-04)
echo `/sbin/pidof -o %PPID $named` > $ROOTDIR/var/run/named/named.pid;
if [ "$named" = "named_sdb" ]; then
echo `/sbin/pidof -o %PPID $named` > $ROOTDIR/var/run/named/named_sdb.pid;
fi;
fi;
fi;
else
named_err="`/usr/sbin/named-checkconf $ckcf_options $named_conf 2>&1`";
echo
echo $"Error in named configuration"':';
echo "$named_err";
failure
echo
if [ -x /usr/bin/logger ]; then
echo "$named_err" | /usr/bin/logger -pdaemon.error -tnamed
fi;
return $RETVAL;
fi;
[ $RETVAL -eq 0 ] && touch /var/lock/subsys/named
echo
return $RETVAL
}
stop() {
# Stop daemons.
echo -n $"Stopping $named: "
/usr/sbin/rndc stop >/dev/null 2>&1
RETVAL=$?
# is it still here?
if /sbin/pidof -o %PPID $named >/dev/null; then
timeout=0
while : ; do
if /sbin/pidof -o %PPID $named >/dev/null; then
if [ $timeout -ge $NAMED_SHUTDOWN_TIMEOUT ]; then
killproc $named -TERM >/dev/null 2>&1
RETVAL=$?
echo -n $"no response, killing with -TERM "
break
else
sleep 2 && echo -n "."
timeout=$((timeout+2))
fi;
else
break
fi;
done
fi;
if [ $RETVAL -eq 0 ]; then
rm -f /var/lock/subsys/named
rm -f /var/run/named.pid
rm -f /var/run/named_sdb.pid 2>/dev/null
fi;
if [ $RETVAL -eq 0 ]; then
success
else
failure
fi;
echo
return $RETVAL
}
rhstatus() {
/usr/sbin/rndc status
return $?
}
restart() {
stop
start
}
reload() {
echo -n $"Reloading $named: "
p=`/sbin/pidof -o %PPID $named`
RETVAL=$?
if [ "$RETVAL" -eq 0 ]; then
/usr/sbin/rndc reload >/dev/null 2>&1 || /bin/kill -HUP $p;
RETVAL=$?
fi
[ "$RETVAL" -eq 0 ] && success $"$named reload" || failure $"$named reload"
echo
return $?
}
probe() {
# named knows how to reload intelligently; we don't want linuxconf
# to offer to restart every time
/usr/sbin/rndc reload >/dev/null 2>&1 || echo start
return $?
}
checkconfig() {
ckcf_options='-z'; # enable named-checkzone for each zone (9.3.1+) !
if [ -n "${ROOTDIR}" -a "x${ROOTDIR}" != "x/" ]; then
OPTIONS="${OPTIONS} -t ${ROOTDIR}"
ckcf_options="$ckcf_options -t ${ROOTDIR}";
fi;
if [ -x /usr/sbin/named-checkconf ] && [ -x /usr/sbin/named-checkzone ] && /usr/sbin/named-checkconf $ckcf_options ${named_conf} | cat ; then
return 0;
else
return 1;
fi
}
# See how we were called.
case "$1" in
start)
start
;;
stop)
stop
;;
status)
rhstatus
;;
restart)
restart
;;
condrestart)
if [ -e /var/lock/subsys/named ]; then restart; fi
;;
reload)
reload
;;
probe)
probe
;;
checkconfig|configtest|check|test)
checkconfig
;;
*)
echo $"Usage: $0 {start|stop|status|restart|condrestart|reload|probe}"
exit 1
esac
exit $?