430 lines
13 KiB
Plaintext
430 lines
13 KiB
Plaintext
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#! /bin/bash
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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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# Copyright (c) 2004-2014 SUSE LINUX Products GmbH, Nuernberg, Germany.
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#
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# This program is free software; you can redistribute it and/or modify it under
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# the terms of the GNU General Public License as published by the Free Software
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# Foundation; either version 2 of the License, or (at your option) any later
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# version.
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#
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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# details.
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#
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# You should have received a copy of the GNU General Public License along with
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# this program; if not, see <http://www.gnu.org/licenses/>.
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#
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# Author: Rolf Haberrecker <rolf@suse.de>, 1997-1999
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# Peter Poeml <poeml@suse.de>, 2000-2006
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# Marius Tomaschewski <mt@suse.de>, 2006-2010
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#
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# /usr/lib/dhcp/dhcpd helper script, fromer /etc/init.d/dhcpd init script.
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#
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###
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test -s /etc/sysconfig/dhcpd && . /etc/sysconfig/dhcpd
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SUPPORTS_CHROOT="yes"
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SUPPORTS_RUN_AS="yes"
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SUPPORTS_HUP="no"
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# note: $DAEMON_PIDFILE is a symlink to the
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# $DAEMON_STATE$DAEMON_PIDFILE (also
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# while DHCPD_RUN_CHROOTED=no) now,
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# as DHCPD_RUN_AS is not allowed to
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# create pid files in /run.
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DHCPv_OPT=$1 ; shift
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case $DHCPv_OPT in
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-4)
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DAEMON='ISC DHCPv4 Server'
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DAEMON_BIN=/usr/sbin/dhcpd
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DAEMON_CONF=/etc/dhcpd.conf
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DAEMON_STATE=/var/lib/dhcp
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DAEMON_LEASES=dhcpd.leases
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DAEMON_PIDFILE=/run/dhcpd.pid
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STARTPROC_LOGFILE=/var/log/rc.dhcpd.log
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LDAP_CONF=/etc/openldap/ldap.conf
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test "$DHCPD_RUN_CHROOTED" = "yes" && \
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CHROOT_PREFIX="$DAEMON_STATE" || CHROOT_PREFIX=''
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DHCPD_CONF_INCLUDE_FILES=${DHCPD_CONF_INCLUDE_FILES:-/etc/dhcpd.d}
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;;
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-6)
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DAEMON='ISC DHCPv6 Server'
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DAEMON_BIN=/usr/sbin/dhcpd
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DAEMON_CONF=/etc/dhcpd6.conf
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DAEMON_STATE=/var/lib/dhcp6
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DAEMON_LEASES=dhcpd6.leases
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DAEMON_PIDFILE=/run/dhcpd6.pid
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STARTPROC_LOGFILE=/var/log/rc.dhcpd6.log
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LDAP_CONF=""
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test "$DHCPD6_RUN_CHROOTED" = "yes" && \
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CHROOT_PREFIX="$DAEMON_STATE" || CHROOT_PREFIX=''
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DHCPD_RUN_AS=$DHCPD6_RUN_AS
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DHCPD_INTERFACE=$DHCPD6_INTERFACE
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DHCPD_OTHER_ARGS=$DHCPD6_OTHER_ARGS
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DHCPD_CONF_INCLUDE_FILES=${DHCPD6_CONF_INCLUDE_FILES:-/etc/dhcpd6.d}
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;;
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*)
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echo >&2 "Usage: $0 <-4|-6> <action>"
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exit 2
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;;
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esac
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# Return values acc. to LSB for all commands but status:
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# 0 - success
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# 1 - generic or unspecified error
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# 2 - invalid or excess argument(s)
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# 3 - unimplemented feature (e.g. "reload")
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# 4 - insufficient privilege
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# 5 - program is not installed
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# 6 - program is not configured
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# 7 - program is not running
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#
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# Note that starting an already running service, stopping
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# or restarting a not-running service as well as the restart
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# with force-reload (in case signalling is not supported) are
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# considered a success.
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if ! [ -x "$DAEMON_BIN" ]; then
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case $1 in
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stop) ;;
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*) echo -n >&2 "\"$DAEMON_BIN\" is not an executable file. Exiting."
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case $1 in
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status) exit 4 ;;
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*) exit 5 ;;
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esac
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;;
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esac
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exit
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fi
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if ! [ -r "$DAEMON_CONF" ] ; then
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case $1 in
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stop|status)
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if test ! -s /etc/sysconfig/dhcpd ; then
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test -e $DAEMON_STATE/$DAEMON_PIDFILE && \
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CHROOT_PREFIX="$DAEMON_STATE" || CHROOT_PREFIX=''
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fi
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;;
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*)
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echo -n >&2 "\"$DAEMON_CONF\" config file missed. Exiting."
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exit 6
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;;
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esac
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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 $DAEMON_STATE/$DAEMON_PIDFILE && ! test -s $DAEMON_STATE/$DAEMON_PIDFILE && rm $DAEMON_STATE/$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 $DAEMON_CONF ]; then
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echo -n "... no configuration file found";
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# service is not configured
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exit 6;
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fi
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## If the interfaces are not set, skip starting of dhcpd
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## and return with "program not configured"
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if [ -z "$DHCPD_INTERFACE" ]; then
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var="DHCPD_INTERFACE"
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case $DHCPv_OPT in -6) var=DHCPD6_INTERFACE ;; esac
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echo -n "... set $var in /etc/sysconfig/dhcpd"
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# service is not configured
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exit 6;
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fi
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if [ "$DHCPD_INTERFACE" = "ANY" ]; then
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DHCPD_INTERFACE=""
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fi
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jail=${CHROOT_PREFIX:-${DAEMON_STATE}}; leases=$DAEMON_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 $LDAP_CONF /etc /dev; do
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if test -d "${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 $LDAP_CONF /etc/{gai.conf,nsswitch.conf,resolv.conf,host.conf,hosts,localtime,bindresvport.blacklist} /dev/urandom; do
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if ! test -e "$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 $i to chroot jail"; exit 6; }
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done
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libdir=@LIBDIR@
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if test -x /usr/bin/ldd ; then
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get_ldd_deps()
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{
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ldd_wl="\/${libdir}\/lib"
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ldd_bl="\/${libdir}\/libc\."
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/usr/bin/ldd "$1" | \
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while read -sr a b c d ; do
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[ -n "$c" ] || continue
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[[ $c =~ $ldd_wl ]] || continue
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[[ $c =~ $ldd_bl ]] && continue
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echo $c
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done
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}
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else
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get_ldd_deps() { :; }
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fi
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cplibs=`for i in /$libdir/{libresolv.so.*,libnss_*.so.*} \
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/$libdir/{libpthread.so.0,libdl.so.2,libgcc_s.so.*} ;
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do
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if [ -s "$i" ] ; then
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echo "$i"
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get_ldd_deps "$i"
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fi
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done | sort -u`
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for i in $cplibs ; do
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if [ -s "$i" ]; then
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cp -pL "$i" "${CHROOT_PREFIX}/$libdir/" \
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|| { echo "...$0:$LINENO: could not copy $i to chroot jail"; exit 6; }
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fi
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done
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# mount /proc into the chroot; the server fails if unable to read /proc/net/{dev,if_inet6}
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mkdir -p ${CHROOT_PREFIX}/proc
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mount -t proc -o ro proc ${CHROOT_PREFIX}/proc 2>/dev/null
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DHCPD_ARGS="-chroot $CHROOT_PREFIX -lf /db/$DAEMON_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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## /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 -s $DAEMON_STATE/$DAEMON_PIDFILE; then
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p=$(<$DAEMON_STATE/$DAEMON_PIDFILE)
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if test -n "$p" && grep -qsE "^${DAEMON_BIN}" "/proc/$p/cmdline" ; then
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echo -n '(already running) '
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else
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rm -f $DAEMON_STATE/$DAEMON_PIDFILE
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fi
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fi
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PID_FILE_ARG="$DAEMON_PIDFILE"
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else
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DHCPD_ARGS="-lf ${DAEMON_STATE}/db/$DAEMON_LEASES"
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PID_FILE_ARG="$DAEMON_STATE$DAEMON_PIDFILE"
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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 $DHCPD_RUN_AS_GROUP"
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chown "${DHCPD_RUN_AS}:${DHCPD_RUN_AS_GROUP}" \
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"$DAEMON_STATE/${DAEMON_PIDFILE%/*}"
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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 $DHCPv_OPT -t -cf $CHROOT_PREFIX/$DAEMON_CONF -pf $PID_FILE_ARG > $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 $DHCPv_OPT -cf $DAEMON_CONF -pf $PID_FILE_ARG $DHCPD_ARGS $DHCPD_OTHER_ARGS $DHCPD_INTERFACE'"
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$DAEMON_BIN $DHCPv_OPT -cf $DAEMON_CONF -pf $PID_FILE_ARG $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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## be verbose
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echo ""
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echo -n " please see $STARTPROC_LOGFILE for details "
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## set status to failed
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exit 1
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else
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ln -sf "$DAEMON_STATE$DAEMON_PIDFILE" "$DAEMON_PIDFILE"
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[ "$DHCPD_RUN_CHROOTED" = "yes" ] && echo -n "[chroot]" || :
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fi
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;;
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stop)
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echo -n "Shutting down $DAEMON "
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# Catch the case where daemon is running without chroot,
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# but sysconfig/dhcp has been changed to use chroot (and
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# another way around).
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# In this case is there is no $chroot/$pidfile, but there
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# should be a /pidfile that we use instead.
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# We can not kill without pid file or dhcp4 kills dhcp6.
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PID_FILE="$DAEMON_STATE$DAEMON_PIDFILE"
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if test "$DHCPD_RUN_CHROOTED" = "yes" ; then
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if test ! -s "$DAEMON_STATE$DAEMON_PIDFILE" -a \
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-s "$DAEMON_PIDFILE" ; then
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PID_FILE="$DAEMON_PIDFILE"
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fi
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else
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if test ! -s "$DAEMON_PIDFILE" -a \
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-s "$DAEMON_STATE$DAEMON_PIDFILE" ; then
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PID_FILE="$DAEMON_STATE$DAEMON_PIDFILE"
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fi
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fi
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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 "$PID_FILE" $DAEMON_BIN
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ret=$?
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# umount proc and remove libraries from the chroot jail,
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# so they are not left over if the server is deinstalled
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if [ "$DHCPD_RUN_CHROOTED" = yes -a -n "$CHROOT_PREFIX" ]; then
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umount ${CHROOT_PREFIX}/proc 2>/dev/null
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rm -f $CHROOT_PREFIX/lib*/*
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fi
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exit $ret
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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 $DHCPv_OPT status
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if test $? = 0; then
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$0 $DHCPv_OPT restart
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fi
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;;
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restart)
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## Check syntax and when it is OK, stop the service
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## and regardless of whether it was running or not,
|
||
|
|
## start it again.
|
||
|
|
if ! $0 $DHCPv_OPT check-syntax &>/dev/null ; then
|
||
|
|
echo -n "Syntax check reports errors, see log messages"
|
||
|
|
exit 1
|
||
|
|
else
|
||
|
|
$0 $DHCPv_OPT stop
|
||
|
|
sleep 3
|
||
|
|
$0 $DHCPv_OPT start
|
||
|
|
fi
|
||
|
|
;;
|
||
|
|
force-reload)
|
||
|
|
## Signal the daemon to reload its config. Most daemons
|
||
|
|
## do this on signal 1 (SIGHUP).
|
||
|
|
## If it does not support it, restart.
|
||
|
|
|
||
|
|
if [ "$SUPPORTS_HUP" = "yes" ]; then
|
||
|
|
echo -n "Reload service $DAEMON"
|
||
|
|
killproc -p $DAEMON_STATE/$DAEMON_PIDFILE -HUP $DAEMON_BIN
|
||
|
|
#touch $DAEMON_STATE/$DAEMON_PIDFILE
|
||
|
|
elif ! $0 $DHCPv_OPT check-syntax &>/dev/null ; then
|
||
|
|
echo -n "Syntax check reports errors, see log messages"
|
||
|
|
exit 1
|
||
|
|
else
|
||
|
|
$0 $DHCPv_OPT stop && sleep 3 && $0 $DHCPv_OPT start
|
||
|
|
fi
|
||
|
|
;;
|
||
|
|
reload)
|
||
|
|
## Like force-reload, but if daemon does not support
|
||
|
|
## signalling, do nothing (!)
|
||
|
|
|
||
|
|
echo -n "Reload service $DAEMON"
|
||
|
|
if [ "$SUPPORTS_HUP" = "yes" ]; then
|
||
|
|
# If it supports signalling:
|
||
|
|
killproc -p $DAEMON_STATE/$DAEMON_PIDFILE -HUP $DAEMON_BIN
|
||
|
|
#touch $DAEMON_STATE/$DAEMON_PIDFILE
|
||
|
|
else
|
||
|
|
## Otherwise if it does not support reload:
|
||
|
|
exit 3
|
||
|
|
fi
|
||
|
|
;;
|
||
|
|
status)
|
||
|
|
echo -n "Checking for $DAEMON: "
|
||
|
|
## Check status with checkproc(8), if process is running
|
||
|
|
## checkproc will return with exit status 0.
|
||
|
|
|
||
|
|
# Status has a slightly different for the status command:
|
||
|
|
# 0 - service running
|
||
|
|
# 1 - service dead, but /run/ pid file exists
|
||
|
|
# 2 - service dead, but /var/lock/ lock file exists
|
||
|
|
# 3 - service not running
|
||
|
|
|
||
|
|
# NOTE: checkproc returns LSB compliant status values.
|
||
|
|
checkproc -p $DAEMON_STATE/$DAEMON_PIDFILE $DAEMON_BIN
|
||
|
|
;;
|
||
|
|
probe)
|
||
|
|
## Optional: Probe for the necessity of a reload,
|
||
|
|
## give out the argument which is required for a reload.
|
||
|
|
|
||
|
|
rc=0
|
||
|
|
for i in /etc/sysconfig/dhcpd $DAEMON_CONF $DHCPD_CONF_INCLUDE_FILES; do
|
||
|
|
test $i -nt $DAEMON_STATE/$DAEMON_PIDFILE && rc=1
|
||
|
|
done
|
||
|
|
test $rc = 1 && echo restart
|
||
|
|
;;
|
||
|
|
check-syntax|syntax-check)
|
||
|
|
echo -n "Checking syntax of $DAEMON_CONF: "
|
||
|
|
|
||
|
|
## this nice bit is from Edwin Groothuis:
|
||
|
|
## check syntax (quiet)
|
||
|
|
$DAEMON_BIN $DHCPv_OPT -q -t -cf $DAEMON_CONF
|
||
|
|
if [ $? -ne 0 ]; then
|
||
|
|
echo ""
|
||
|
|
## check syntax (verbose)
|
||
|
|
$DAEMON_BIN $DHCPv_OPT -t -cf $DAEMON_CONF
|
||
|
|
echo -ne '\nConfig is NOT okay'
|
||
|
|
exit 1
|
||
|
|
fi
|
||
|
|
;;
|
||
|
|
check-lease|check-lease-file)
|
||
|
|
echo -n "Checking lease file $DAEMON_LEASES: "
|
||
|
|
|
||
|
|
if [ -s ${DAEMON_STATE}/db/$DAEMON_LEASES ] ; then
|
||
|
|
## check leases file (quiet)
|
||
|
|
$DAEMON_BIN $DHCPv_OPT -q -T -cf /dev/null -lf ${DAEMON_STATE}/db/$DAEMON_LEASES
|
||
|
|
if [ $? -ne 0 ]; then
|
||
|
|
echo ""
|
||
|
|
## check leases file (verbose)
|
||
|
|
$DAEMON_BIN $DHCPv_OPT -T -cf $DAEMON_CONF -lf ${DAEMON_STATE}/db/$DAEMON_LEASES
|
||
|
|
echo -ne '\nLease file is NOT okay'
|
||
|
|
exit 1
|
||
|
|
fi
|
||
|
|
fi
|
||
|
|
;;
|
||
|
|
*)
|
||
|
|
SCRIPT="${SCRIPT:-${0##*/} $DHCPv_OPT}"
|
||
|
|
echo "Usage: $SCRIPT {start|stop|status|try-restart|restart|force-reload|reload|probe|check-syntax} [-v]"
|
||
|
|
exit 1
|
||
|
|
esac
|