bind/named.init

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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
### BEGIN INIT INFO
# Provides: $named
# Required-Start: $local_fs $network $syslog
# Required-Stop: $local_fs $network $syslog
# Default-Start:
# Default-Stop: 0 1 2 3 4 5 6
# Short-Description: start|stop|status|restart|try-restart|reload|force-reload DNS server
# Description: control ISC BIND implementation of DNS server
### END INIT INFO
# Source function library.
. /etc/rc.d/init.d/functions
[ -r /etc/sysconfig/named ] && . /etc/sysconfig/named
RETVAL=0
export KRB5_KTNAME=${KEYTAB_FILE:-/etc/named.keytab}
named='named'
if [ -x /usr/sbin/named-sdb ]; then
named='named-sdb'
fi
# Don't kill named during clean-up
NAMED_SHUTDOWN_TIMEOUT=${NAMED_SHUTDOWN_TIMEOUT:-25}
if [ -n "$ROOTDIR" ]; then
ROOTDIR=`echo $ROOTDIR | sed 's#//*#/#g;s#/$##'`;
rdl=`/usr/bin/readlink $ROOTDIR`;
if [ -n "$rdl" ]; then
ROOTDIR="$rdl";
fi;
fi
ROOTDIR_MOUNT='/etc/named /etc/pki/dnssec-keys /var/named /etc/named.conf
/etc/named.dnssec.keys /etc/named.rfc1912.zones /etc/rndc.conf /etc/rndc.key
/usr/lib64/bind /usr/lib/bind /etc/named.iscdlv.key /etc/named.root.key'
mount_chroot_conf()
{
if [ -n "$ROOTDIR" ]; then
for all in $ROOTDIR_MOUNT; do
# Skip nonexistant files
[ -e "$all" ] || continue
# If mount source is a file
if ! [ -d "$all" ]; then
# mount it only if it is not present in chroot or it is empty
if ! [ -e "$ROOTDIR$all" ] || [ `stat -c'%s' "$ROOTDIR$all"` -eq 0 ]; then
touch "$ROOTDIR$all"
mount --bind "$all" "$ROOTDIR$all"
fi
else
# Mount source is a directory. Mount it only if directory in chroot is
# empty.
if [ -e "$all" ] && [ `ls -1A $ROOTDIR$all | wc -l` -eq 0 ]; then
mount --bind "$all" "$ROOTDIR$all"
fi
fi
done
fi
}
umount_chroot_conf()
{
for all in $ROOTDIR_MOUNT; do
# Check if file is mount target. Do not use /proc/mounts because detecting
# of modified mounted files can fail.
if mount | grep -q '.* on '"$ROOTDIR$all"' .*'; then
umount "$ROOTDIR$all"
# Remove temporary created files
[ -f "$all" ] && rm -f "$ROOTDIR$all"
fi
done
}
# Check if all what named needs running
start()
{
[ "$EUID" != "0" ] && exit 4
# Source networking configuration.
[ -r /etc/sysconfig/network ] && . /etc/sysconfig/network
# Check that networking is up
[ "${NETWORKING}" = "no" ] && exit 1
[ -x /usr/sbin/"$named" ] || exit 5
# Handle -c option
previous_option='unspecified';
for a in $OPTIONS; do
if [ $previous_option = '-c' ]; then
named_conf=$a;
fi;
previous_option=$a;
done;
named_conf=${named_conf:-/etc/named.conf};
mount_chroot_conf
if [ ! -r $ROOTDIR$named_conf ]; then
echo 'Cannot find configuration file. You could create it by system-config-bind'
exit 6;
fi;
# all pre-start is done, lets start named
echo -n $"Starting named: "
if [ -n "`/sbin/pidof -o %PPID "$named"`" ]; then
echo -n $"named: already running"
success
echo
exit 0;
fi;
ckcf_options='-z'; # enable named-checkzone for each zone (9.3.1+) !
if [ -n "${ROOTDIR}" -a "x${ROOTDIR}" != "x/" ]; then
OPTIONS="${OPTIONS} -t ${ROOTDIR}"
ckcf_options="$ckcf_options -t ${ROOTDIR}";
[ -s /etc/localtime ] && cp -fp /etc/localtime ${ROOTDIR}/etc/localtime;
fi
RETVAL=0
# check if configuration is correct
if [ -x /usr/sbin/named-checkconf ] && [ -x /usr/sbin/named-checkzone ] && /usr/sbin/named-checkconf $ckcf_options ${named_conf} >/dev/null 2>&1; then
daemon /usr/sbin/"$named" -u named ${OPTIONS};
RETVAL=$?
if [ $RETVAL -eq 0 ]; then
rm -f /var/run/{named,named-sdb}.pid;
ln -s $ROOTDIR/var/run/named/"$named".pid /var/run/"$named".pid;
fi;
if [ -n "`/sbin/pidof -o %PPID "$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;
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
[ -x /usr/bin/logger ] && echo "$named_err" | /usr/bin/logger -pdaemon.error -tnamed;
umount_chroot_conf
exit 2;
fi;
echo
if [ $RETVAL -eq 0 ]; then
touch /var/lock/subsys/named;
else
umount_chroot_conf
exit 7;
fi
return 0;
}
stop() {
[ "$EUID" != "0" ] && exit 4
# Stop daemons.
echo -n $"Stopping named: "
[ -x /usr/sbin/rndc ] && /usr/sbin/rndc stop >/dev/null 2>&1;
RETVAL=$?
# was rndc successful?
[ "$RETVAL" -eq 0 ] || killproc "$named" -TERM >/dev/null 2>&1
timeout=0
RETVAL=0
while /sbin/pidof -o %PPID "$named" >/dev/null; do
if [ $timeout -ge $NAMED_SHUTDOWN_TIMEOUT ]; then
RETVAL=1
break
else
sleep 2 && echo -n "."
timeout=$((timeout+2))
fi;
done
umount_chroot_conf
# remove pid files
if [ $RETVAL -eq 0 ]; then
rm -f /var/lock/subsys/named
rm -f /var/run/{named,named-sdb}.pid
fi;
if [ $RETVAL -eq 0 ]; then
success
else
failure
RETVAL=1
fi;
echo
return $RETVAL
}
rhstatus() {
[ -x /usr/sbin/rndc ] && /usr/sbin/rndc status;
status /usr/sbin/"$named";
return $?
}
restart() {
stop
start
}
reload() {
[ "$EUID" != "0" ] && exit
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 $RETVAL
}
# See how we were called.
case "$1" in
start)
start
;;
stop)
stop
;;
status)
rhstatus;
RETVAL=$?
;;
restart)
restart
;;
condrestart|try-restart)
if [ -e /var/lock/subsys/named ]; then restart; fi
;;
reload)
reload
;;
force-reload)
if ! reload; then restart; fi
;;
*)
echo $"Usage: $0 {start|stop|status|restart|try-restart|reload|force-reload}"
[ "x$1" = "x" ] && exit 0
exit 2
esac
exit $RETVAL