372 lines
11 KiB
Bash
372 lines
11 KiB
Bash
#! /bin/sh
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# Copyright (c) 1996, 1997, 1998 S.u.S.E. GmbH
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# Copyright (c) 1998, 1999, 2000, 2001 SuSE GmbH
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# Copyright (c) 2002, 2003 SuSE Linux AG
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#
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# Author: Rolf Haberrecker <rolf@suse.de>, 1997, 1998, 1999
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# Peter Poeml <poeml@suse.de>, 2000, 2001, 2002, 2003
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#
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# /etc/init.d/dhcpd
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# and its symbolic link
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# /usr/sbin/rcdhcpd
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#
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### BEGIN INIT INFO
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# Provides: dhcpd
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# Required-Start: $remote_fs $network
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# Should-Start: $named $syslog $time ldap ndsd
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# Required-Stop: $remote_fs $network
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# Should-Stop: $named $syslog ldap ndsd
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# Default-Start: 3 5
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# Default-Stop: 0 1 2 6
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# Short-Description: DHCP Server
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# Description: Start DHCP (Dynamic Host Configuration Protocol)
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# server. (Note: if configured for failover it
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# needs to rely on time synchronisation.)
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### END INIT INFO
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if [ -s /etc/sysconfig/dhcpd ]; then
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. /etc/sysconfig/dhcpd
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else
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# pre 8.0
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# Source SuSE config
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. /etc/rc.config
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test -s /etc/rc.config.d/dhcpd.rc.config && \
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. /etc/rc.config.d/dhcpd.rc.config
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# Determine the base and follow a runlevel link name.
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base=${0##*/}
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link=${base#*[SK][0-9][0-9]}
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# Force execution if not called by a runlevel directory.
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test $link = $base && START_DHCPD=yes
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test "$START_DHCPD" = yes || exit 0
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fi
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test "$DHCPD_RUN_CHROOTED" = "yes" && CHROOT_PREFIX=/var/lib/dhcp/
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DAEMON="DHCP server"
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[ "$DHCPD_BINARY" = /usr/sbin/dhcpd.lpf ] && DHCPD_BINARY=/usr/sbin/dhcpd
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DAEMON_BIN=${DHCPD_BINARY:=/usr/sbin/dhcpd}
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DAEMON_CONF=/etc/dhcpd.conf
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DAEMON_PIDFILE=/var/run/dhcpd.pid
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STARTPROC_LOGFILE=/var/log/rc.dhcpd.log
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SUPPORTS_HUP="no"
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LDAP_CONF=/etc/openldap/ldap.conf
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# Shell functions sourced from /etc/rc.status:
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# rc_check check and set local and overall rc status
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# rc_status check and set local and overall rc status
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# rc_status -v ditto but be verbose in local rc status
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# rc_status -v -r ditto and clear the local rc status
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# rc_failed set local and overall rc status to failed
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# rc_failed <num> set local and overall rc status to <num><num>
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# rc_reset clear local rc status (overall remains)
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# rc_exit exit appropriate to overall rc status
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. /etc/rc.status
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# First reset status of this service
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rc_reset
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# Return values acc. to LSB for all commands but status:
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# 0 - success
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# 1 - generic or unspecified error
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# 2 - invalid or excess argument(s)
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# 3 - unimplemented feature (e.g. "reload")
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# 4 - insufficient privilege
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# 5 - program is not installed
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# 6 - program is not configured
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# 7 - program is not running
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#
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# Note that starting an already running service, stopping
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# or restarting a not-running service as well as the restart
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# with force-reload (in case signalling is not supported) are
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# considered a success.
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if ! [ -x $DAEMON_BIN ]; then
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echo >&2 "$0: \"$DAEMON_BIN\" is not an executable file. Exiting."
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rc_failed 1
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rc_status -v1
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rc_exit
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fi
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# remove empty pid files to avoid disturbing warnings by checkproc/killproc
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# (these can occur if dhcpd does not start correctly)
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test -e $DAEMON_PIDFILE && ! test -s $DAEMON_PIDFILE && rm $DAEMON_PIDFILE
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test -e $CHROOT_PREFIX/$DAEMON_PIDFILE && ! test -s $CHROOT_PREFIX/$DAEMON_PIDFILE && rm $CHROOT_PREFIX/$DAEMON_PIDFILE
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case "$1" in
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start)
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echo -n "Starting $DAEMON "
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## If there is no conf file, skip starting of dhcpd
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## and return with "program not configured"
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if ! [ -f $DAEMON_CONF ]; then
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echo -e -n "... no configuration file found";
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# Tell the user this has skipped
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rc_status -s
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# service is not configured
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exit 6;
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fi
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## If the interfaces are not set, skip starting of dhcpd
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## and return with "program not configured"
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if [ -z "$DHCPD_INTERFACE" ]; then
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echo -n "... cannot... DHCPD_INTERFACE in /etc/sysconfig/dhcpd is empty!"
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# Tell the user this has skipped
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rc_status -s
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# service is not configured
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exit 6;
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fi
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if [ "$DHCPD_INTERFACE" = "ANY" ]; then
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DHCPD_INTERFACE=""
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fi
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# it might be necessary to convert "configuration names" (as in
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# /etc/sysconfig/network/ifcfg-* into "interface names" (like eth*)
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if [ -x /sbin/getcfg-interface ]; then
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unset interfaces
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for i in $DHCPD_INTERFACE; do
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interfaces="$interfaces$(/sbin/getcfg-interface $i) "
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done
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DHCPD_INTERFACE=$interfaces
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fi
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jail=/var/lib/dhcp; leases=dhcpd.leases
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if ! [ -e $jail/db/$leases ]; then
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# until 9.0, the lease file was in /var/lib/dhcp and part of the package
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if test -e $jail/$leases -a '!' -L $jail/$leases; then
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# this is the case where the %post script runs _before_ the old package is
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# removed (i.e., dhcpd.leases has not renamed to .rpmsave yet)
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mv $jail/$leases $jail/db/$leases && \
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ln -s db/$leases $jail/
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elif test -e $jail/$leases.rpmsave; then
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# this is what's left when the package is already gone.
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mv $jail/$leases.rpmsave $jail/db/$leases && \
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ln -s db/$leases $jail/
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else
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# fresh installation:
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# a lease file must be present. the server won't start without
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touch $jail/db/$leases
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fi
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fi
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if test "$DHCPD_RUN_CHROOTED" = "yes" ; then
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## copy the conf file to the chroot jail (dhcpd has to be restarted anyway,
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## when it has changed) and change path to leases file
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for i in $DAEMON_CONF $DHCPD_CONF_INCLUDE_FILES $LDAP_CONF; do
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if test -d "${i}" ; then
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test -d "$CHROOT_PREFIX/${i}" || \
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mkdir -p "$CHROOT_PREFIX/${i}"
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elif test -e "${i}" ; then
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test -d "$CHROOT_PREFIX/${i%/*}" || \
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mkdir -p "$CHROOT_PREFIX/${i%/*}"
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fi
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done
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rm -f $CHROOT_PREFIX/dev/urandom
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for i in $DAEMON_CONF $DHCPD_CONF_INCLUDE_FILES $LDAP_CONF /etc/{resolv.conf,host.conf,hosts,localtime} /dev/urandom; do
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if ! test -e "$i"; then continue; fi # neither of them is absolutely necessary
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cp -aL "$i" "${CHROOT_PREFIX}/${i%/*}/" &>/dev/null \
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|| { echo "...$0:$LINENO: could not copy $i to chroot jail"; rc_failed; rc_status -v1; exit 6; }
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done
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libdir=/$(basename $(echo /var/lib/dhcp/lib*))
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for i in /$libdir/{libresolv.so.2,libnss_dns{,6}.so.2} \
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/$libdir/{libpthread.so.0,libdl.so.2} ; do
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if [ -s "$i" ]; then
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cp -pL "$i" "/var/lib/dhcp/$libdir/" \
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|| { echo "...$0:$LINENO: could not copy $i to chroot jail"; rc_failed; rc_status -v1; exit 6; }
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fi
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done
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DHCPD_ARGS="-chroot $CHROOT_PREFIX -lf /db/dhcpd.leases"
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## If there is a pid file containing a pid, the machine might have crashed. pid files in
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## /var/run are always cleaned up at boot time, but this is not the case for the pid file in
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## the chroot jail. Therefore, and old pid file may exist. This is only a problem if it
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## incidentally contains the pid of a running process. If this process is not a 'dhcpd',
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## we remove the pid. (dhcpd itself only checks whether the pid is alive or not.)
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if test -e $CHROOT_PREFIX/$DAEMON_PIDFILE -a -s $CHROOT_PREFIX/$DAEMON_PIDFILE; then
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i=$(<$CHROOT_PREFIX/$DAEMON_PIDFILE)
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if pidof dhcpd &>/dev/null; then
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echo -n "(already running) "
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else
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rm $CHROOT_PREFIX/$DAEMON_PIDFILE
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fi
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fi
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fi
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if [ -n "$DHCPD_RUN_AS" ]; then
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DHCPD_RUN_AS_GROUP="$(getent group $(getent passwd $DHCPD_RUN_AS | cut -d: -f4) | cut -d: -f1)"
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DHCPD_ARGS="$DHCPD_ARGS -user $DHCPD_RUN_AS -group $DHCPD_RUN_AS_GROUP"
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fi
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## check syntax with -t (output to log file) and start only when the syntax is okay
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rm -f $STARTPROC_LOGFILE # start log
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error=0
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if ! $DAEMON_BIN -t -cf $CHROOT_PREFIX/$DAEMON_CONF > $STARTPROC_LOGFILE 2>&1 ; then
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error=1
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else
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## Start daemon. If this fails the return value is set appropriate.
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## The init script should return 0, even if service is already running,
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## to match the LSB spec.
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test "$2" = "-v" && echo -en \
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"\nexecuting '$DAEMON_BIN $DHCPD_ARGS $DHCPD_OTHER_ARGS $DHCPD_INTERFACE'"
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$DAEMON_BIN $DHCPD_ARGS $DHCPD_OTHER_ARGS $DHCPD_INTERFACE &> $STARTPROC_LOGFILE
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ret=$?
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fi
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if [ $error -gt 0 -o ${ret:-0} -gt 0 ]; then
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cat $STARTPROC_LOGFILE
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## set status to failed
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rc_failed
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else
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[ "$DHCPD_RUN_CHROOTED" = "yes" ] && echo -n "[chroot]" || :
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fi
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# Remember status and be verbose
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rc_status -v
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;;
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stop)
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echo -n "Shutting down $DAEMON "
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## Stop daemon with killproc(8) and if this fails
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## set echo the echo return value.
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killproc -p $CHROOT_PREFIX/$DAEMON_PIDFILE -TERM $DAEMON_BIN
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ret=$?
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if test -s $CHROOT_PREFIX/$DAEMON_PIDFILE; then
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kill $(<$CHROOT_PREFIX/$DAEMON_PIDFILE) 2>/dev/null
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fi
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# remove libraries from the chroot jail, just so they are not left over
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# if the server is deinstalled
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if [ "$DHCPD_RUN_CHROOTED" = yes ]; then
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rm -f $CHROOT_PREFIX/lib*/*
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fi
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# Remember status and be verbose
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rc_failed $ret
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rc_status -v
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;;
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try-restart)
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## Do a restart only if the service was active before.
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## Note: try-restart is now part of LSB (as of 1.9).
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## RH has a similar command named condrestart.
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$0 status
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if test $? = 0; then
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$0 restart
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else
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rc_reset # Not running is not a failure.
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fi
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# Remember status and be quiet
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rc_status
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;;
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restart)
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## Stop the service and regardless of whether it was
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## running or not, start it again.
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$0 stop
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sleep 3
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$0 start
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# Remember status and be quiet
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rc_status
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;;
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force-reload)
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## Signal the daemon to reload its config. Most daemons
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## do this on signal 1 (SIGHUP).
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## If it does not support it, restart.
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echo -n "Reload service $DAEMON"
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if [ "$SUPPORTS_HUP" = "yes" ]; then
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killproc -p $DAEMON_PIDFILE -HUP $DAEMON_BIN
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#touch $DAEMON_PIDFILE
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rc_status -v
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else
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$0 stop && sleep 3 && $0 start
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rc_status
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fi
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;;
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reload)
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## Like force-reload, but if daemon does not support
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## signalling, do nothing (!)
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if [ "$SUPPORTS_HUP" = "yes" ]; then
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# If it supports signalling:
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echo -n "Reload service $DAEMON"
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killproc -p $DAEMON_PIDFILE -HUP $DAEMON_BIN
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#touch $DAEMON_PIDFILE
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rc_status -v
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else
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## Otherwise if it does not support reload:
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rc_failed 3
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rc_status -v
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fi
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;;
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status)
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echo -n "Checking for $DAEMON: "
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## Check status with checkproc(8), if process is running
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## checkproc will return with exit status 0.
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# Status has a slightly different for the status command:
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# 0 - service running
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# 1 - service dead, but /var/run/ pid file exists
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# 2 - service dead, but /var/lock/ lock file exists
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# 3 - service not running
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# NOTE: checkproc returns LSB compliant status values.
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checkproc -p $CHROOT_PREFIX/$DAEMON_PIDFILE $DAEMON_BIN
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rc_status -v
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;;
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probe)
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## Optional: Probe for the necessity of a reload,
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## give out the argument which is required for a reload.
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rc=0
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for i in /etc/sysconfig/dhcpd $DAEMON_CONF $DHCPD_CONF_INCLUDE_FILES; do
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test $i -nt $CHROOT_PREFIX/$DAEMON_PIDFILE && rc=1
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done
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test $rc = 1 && echo restart
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;;
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check-syntax|syntax-check)
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echo "Checking syntax of $DAEMON_CONF: "
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## this nice bit is from Edwin Groothuis:
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## check syntax (quiet)
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$DAEMON_BIN -q -t -cf $DAEMON_CONF
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if ! [ $? -eq 0 ]; then
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## check syntax (verbose)
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$DAEMON_BIN -t -cf $DAEMON_CONF
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echo -e '\nConfig is NOT okay\n'
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else
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echo 'Config is okay. Hope you also specified existent network devices ;) '
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## in v3, lease file checking is also implemented
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if [ $DAEMON_BIN != "/usr/sbin/dhcpd-2" ]; then
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## check leases file (quiet)
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$DAEMON_BIN -q -T -cf $DAEMON_CONF -lf /var/lib/dhcp/db/dhcpd.leases
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if ! [ $? -eq 0 ]; then
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## check leases file (verbose)
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$DAEMON_BIN -T -cf $DAEMON_CONF -lf /var/lib/dhcp/db/dhcpd.leases
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echo -e '\nLease file is NOT okay'
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else
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echo 'Lease file is okay'
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fi
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fi
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fi
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;;
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*)
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echo "Usage: $0 {start|stop|status|try-restart|restart|force-reload|reload|probe|check-syntax} [-v]"
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exit 1
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esac
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rc_exit
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