292 lines
6.6 KiB
Bash
Executable File
292 lines
6.6 KiB
Bash
Executable File
#!/bin/bash
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#
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# named This shell script takes care of starting and stopping
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# named (BIND DNS server).
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#
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# chkconfig: - 13 87
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# description: named (BIND) is a Domain Name Server (DNS) \
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# that is used to resolve host names to IP addresses.
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# probe: true
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### BEGIN INIT INFO
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# Provides: $named
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# Required-Start: $local_fs $network $syslog
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# Required-Stop: $local_fs $network $syslog
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# Default-Start:
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# Default-Stop: 0 1 2 3 4 5 6
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# Short-Description: start|stop|status|restart|try-restart|reload|force-reload DNS server
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# Description: control ISC BIND implementation of DNS server
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### END INIT INFO
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# Source function library.
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. /etc/rc.d/init.d/functions
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[ -r /etc/sysconfig/named ] && . /etc/sysconfig/named
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RETVAL=0
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export KRB5_KTNAME=${KEYTAB_FILE:-/etc/named.keytab}
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named='named'
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if [ -x /usr/sbin/named-sdb ]; then
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named='named-sdb'
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fi
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# Don't kill named during clean-up
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NAMED_SHUTDOWN_TIMEOUT=${NAMED_SHUTDOWN_TIMEOUT:-25}
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if [ -n "$ROOTDIR" ]; then
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ROOTDIR=`echo $ROOTDIR | sed 's#//*#/#g;s#/$##'`;
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rdl=`/usr/bin/readlink $ROOTDIR`;
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if [ -n "$rdl" ]; then
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ROOTDIR="$rdl";
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fi;
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fi
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PIDFILE="/var/run/named/named.pid"
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ROOTDIR_MOUNT='/etc/named /etc/pki/dnssec-keys /var/named /etc/named.conf
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/etc/named.dnssec.keys /etc/named.rfc1912.zones /etc/rndc.conf /etc/rndc.key
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/usr/lib64/bind /usr/lib/bind /etc/named.iscdlv.key /etc/named.root.key'
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mount_chroot_conf()
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{
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if [ -n "$ROOTDIR" ]; then
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for all in $ROOTDIR_MOUNT; do
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# Skip nonexistant files
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[ -e "$all" ] || continue
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# If mount source is a file
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if ! [ -d "$all" ]; then
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# mount it only if it is not present in chroot or it is empty
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if ! [ -e "$ROOTDIR$all" ] || [ `stat -c'%s' "$ROOTDIR$all"` -eq 0 ]; then
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touch "$ROOTDIR$all"
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mount --bind "$all" "$ROOTDIR$all"
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fi
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else
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# Mount source is a directory. Mount it only if directory in chroot is
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# empty.
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if [ -e "$all" ] && [ `ls -1A $ROOTDIR$all | wc -l` -eq 0 ]; then
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mount --bind "$all" "$ROOTDIR$all"
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fi
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fi
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done
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fi
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}
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umount_chroot_conf()
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{
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for all in $ROOTDIR_MOUNT; do
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# Check if file is mount target. Do not use /proc/mounts because detecting
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# of modified mounted files can fail.
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if mount | grep -q '.* on '"$ROOTDIR$all"' .*'; then
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umount "$ROOTDIR$all"
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# Remove temporary created files
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[ -f "$all" ] && rm -f "$ROOTDIR$all"
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fi
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done
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}
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pidofnamed() {
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pidofproc -p "$ROOTDIR/$PIDFILE" "$named";
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}
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# Check if all what named needs running
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start()
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{
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[ "$EUID" != "0" ] && exit 4
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# Source networking configuration.
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[ -r /etc/sysconfig/network ] && . /etc/sysconfig/network
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# Check that networking is up
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[ "${NETWORKING}" = "no" ] && exit 1
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[ -x /usr/sbin/"$named" ] || exit 5
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# Handle -c option
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previous_option='unspecified';
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for a in $OPTIONS; do
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if [ $previous_option = '-c' ]; then
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named_conf=$a;
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fi;
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previous_option=$a;
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done;
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named_conf=${named_conf:-/etc/named.conf};
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mount_chroot_conf
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if [ ! -r $ROOTDIR$named_conf ]; then
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echo 'Cannot find configuration file. You could create it by system-config-bind'
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exit 6;
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fi;
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# all pre-start is done, lets start named
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echo -n $"Starting named: "
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if [ -n "`pidofnamed`" ]; then
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echo -n $"named: already running"
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success
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echo
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exit 0;
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fi;
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if ! [ "$DISABLE_ZONE_CHECKING" = yes ]; then
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ckcf_options='-z'; # enable named-checkzone for each zone (9.3.1+) !
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fi;
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if [ -n "${ROOTDIR}" -a "x${ROOTDIR}" != "x/" ]; then
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OPTIONS="${OPTIONS} -t ${ROOTDIR}"
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ckcf_options="$ckcf_options -t ${ROOTDIR}";
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[ -s /etc/localtime ] && cp -fp /etc/localtime ${ROOTDIR}/etc/localtime;
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fi
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RETVAL=0
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# check if configuration is correct
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if [ -x /usr/sbin/named-checkconf ] && [ -x /usr/sbin/named-checkzone ] && /usr/sbin/named-checkconf $ckcf_options ${named_conf} >/dev/null 2>&1; then
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daemon --pidfile "$ROOTDIR/$PIDFILE" /usr/sbin/"$named" -u named ${OPTIONS};
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RETVAL=$?
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if [ $RETVAL -eq 0 ]; then
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rm -f /var/run/{named,named-sdb}.pid;
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ln -s $ROOTDIR/"$PIDFILE" /var/run/"$named".pid;
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fi;
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else
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named_err="`/usr/sbin/named-checkconf $ckcf_options $named_conf 2>&1`";
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echo
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echo "Error in named configuration:";
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echo "$named_err";
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failure
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echo
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[ -x /usr/bin/logger ] && echo "$named_err" | /usr/bin/logger -pdaemon.error -tnamed;
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umount_chroot_conf
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exit 2;
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fi;
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echo
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if [ $RETVAL -eq 0 ]; then
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touch /var/lock/subsys/named;
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else
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umount_chroot_conf
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exit 7;
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fi
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return 0;
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}
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stop() {
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[ "$EUID" != "0" ] && exit 4
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# Stop daemons.
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echo -n $"Stopping named: "
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[ -x /usr/sbin/rndc ] && /usr/sbin/rndc stop >/dev/null 2>&1;
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RETVAL=$?
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# was rndc successful?
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[ "$RETVAL" -eq 0 ] || \
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killproc -p "$ROOTDIR/$PIDFILE" "$named" -TERM >/dev/null 2>&1
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timeout=0
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RETVAL=0
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while pidofnamed >/dev/null; do
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if [ $timeout -ge $NAMED_SHUTDOWN_TIMEOUT ]; then
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RETVAL=1
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break
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else
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sleep 2 && echo -n "."
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timeout=$((timeout+2))
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fi;
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done
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umount_chroot_conf
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# remove pid files
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if [ $RETVAL -eq 0 ]; then
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rm -f /var/lock/subsys/named
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rm -f /var/run/{named,named-sdb}.pid
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fi;
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if [ $RETVAL -eq 0 ]; then
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success
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else
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failure
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RETVAL=1
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fi;
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echo
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return $RETVAL
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}
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rhstatus() {
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[ -x /usr/sbin/rndc ] && /usr/sbin/rndc status;
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status -p "$ROOTDIR/$PIDFILE" -l named /usr/sbin/"$named";
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return $?
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}
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restart() {
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stop
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start
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}
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reload() {
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[ "$EUID" != "0" ] && exit
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echo -n $"Reloading "$named": "
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p=`pidofnamed`
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RETVAL=$?
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if [ "$RETVAL" -eq 0 ]; then
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/usr/sbin/rndc reload >/dev/null 2>&1 || /bin/kill -HUP $p;
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RETVAL=$?
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fi
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[ "$RETVAL" -eq 0 ] && success $"$named reload" || failure $"$named reload"
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echo
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return $RETVAL
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}
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checkconfig() {
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ckcf_options='-z';
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if [ -n "${ROOTDIR}" -a "x${ROOTDIR}" != "x/" ]; then
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ckcf_options="$ckcf_options -t ${ROOTDIR}";
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mount_chroot_conf
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fi;
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if [ -x /usr/sbin/named-checkconf ] && [ -x /usr/sbin/named-checkzone ] && /usr/sbin/named-checkconf $ckcf_options ${named_conf} ; then
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umount_chroot_conf
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return 0;
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else
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umount_chroot_conf
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return 1;
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fi
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}
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# See how we were called.
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case "$1" in
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start)
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start
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;;
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stop)
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stop
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;;
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status)
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rhstatus;
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RETVAL=$?
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;;
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restart)
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restart
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;;
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condrestart|try-restart)
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if [ -e /var/lock/subsys/named ]; then restart; fi
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;;
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reload)
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reload
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;;
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force-reload)
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if ! reload; then restart; fi
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;;
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checkconfig|configtest|check|test)
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checkconfig
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;;
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*)
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echo $"Usage: $0 {start|stop|status|restart|try-restart|reload|force-reload}"
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[ "x$1" = "x" ] && exit 0
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exit 2
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esac
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exit $RETVAL
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