176 lines
4.9 KiB
Bash
176 lines
4.9 KiB
Bash
#! /bin/bash
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#
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# dhcpd-restart-hook - script to restart dhcpd on virtual interfaces
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#
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# Copyright (C) 2009 SUSE LINUX Products GmbH, Nuernberg, Germany.
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#
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# Author(s): Marius Tomaschewski <mt@suse.de>, 2009
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# version 2 as published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, see <http://www.gnu.org/licenses/>
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#
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# Please send feedback via http://www.suse.de/feedback
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#
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set -e
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unset ${!LC_*} LANUGUAGE
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export LANG=POSIX
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export PATH=/sbin:/usr/sbin:/usr/bin:/bin
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SCRIPTNAME=${0##*/}
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usage () {
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echo "usage: $SCRIPTNAME [<config>] <interface> [-o <options>]"
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echo ""
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echo "Any options are ignored"
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exit $R_USAGE
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}
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R_INTERNAL=1 # internal error, e.g. no config or missing scripts
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cd /etc/sysconfig/network || exit $R_INTERNAL
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case $1 in ""|-h|*help*) usage ;; esac
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INTERFACE="$1"
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if test "x$2" != x -a "x$2" != "x-o" ; then
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CONFIG=$INTERFACE
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INTERFACE="$2"
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shift
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else
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CONFIG=$INTERFACE
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fi
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shift
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mode=""
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args=$(getopt -o "o:" -- "$@")
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eval set -- "$args"
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while [ $# -gt 0 ]; do
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case "$1" in
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--) shift; break;;
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-o) mode="$2"; shift;;
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esac
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shift
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done
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. /etc/sysconfig/network/config
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if test -f /etc/sysconfig/network/scripts/functions ; then
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. /etc/sysconfig/network/scripts/functions
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fi
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. /etc/sysconfig/dhcpd 2>/dev/null
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. /etc/sysconfig/network/ifcfg-"$CONFIG" 2>/dev/null || true
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: ${DHCPD_IFUP_RESTART:=auto}
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: ${DHCPD6_IFUP_RESTART:=auto}
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iface_needs_restart()
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{
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test -d /sys/class/net/$1/bridge -o \
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-d /sys/class/net/$1/bonding -o \
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-f /proc/net/vlan/$1
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}
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dhcpv4_server_restart()
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{
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#
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# don't do anything if we are disabled either
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# in the /etc/sysconfig/dhcpd or per interface
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# in the /etc/sysconfig/network/ifcfg-"$CONFIG"
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#
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test "$DHCPD_IFUP_RESTART" = no && return 0
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# don't restart for loopback interface
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case $INTERFACE in (lo) return 0 ;; esac
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restart_needed=$DHCPD_IFUP_RESTART
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if test -n "$DHCPD_INTERFACE" \
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-a "$restart_needed" != yes ;
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then
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for I in $DHCPD_INTERFACE ; do
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test -n "$I" || continue
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# don't restart when _one_ involved
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# interface is not available/up yet
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is_iface_up $I || return 0
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# check if this interface is involved
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if test "$I" = "$INTERFACE" ; then
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# check if a restart is needed
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if iface_needs_restart $I ; then
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restart_needed=yes
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fi
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fi
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done
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fi
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if test "$restart_needed" = yes ; then
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if test "`/usr/bin/systemctl --value -p SubState show dhcpd.service`" = "running"; then
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/usr/bin/systemctl restart dhcpd.service
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fi
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fi
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}
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dhcpv6_server_restart()
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{
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#
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# don't do anything if we are disabled either
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# in the /etc/sysconfig/dhcpd or per interface
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# in the /etc/sysconfig/network/ifcfg-"$CONFIG"
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#
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test "$DHCPD6_IFUP_RESTART" = no && return 0
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# don't restart for loopback interface
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case $INTERFACE in (lo) return 0 ;; esac
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restart_needed=$DHCPD6_IFUP_RESTART
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if test -n "$DHCPD6_INTERFACE" \
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-a "$restart_needed" != yes ;
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then
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for I in $DHCPD6_INTERFACE ; do
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test -n "$I" || continue
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# don't restart when _one_ involved
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# interface is not available/up yet
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is_iface_up $I || return 0
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# check if this interface is involved
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if test "$I" = "$INTERFACE" ; then
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# check if a restart is needed
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if iface_needs_restart $I ; then
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restart_needed=yes
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fi
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fi
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done
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fi
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if test "$restart_needed" = yes ; then
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if test "`/usr/bin/systemctl --value -p SubState show dhcpd6.service`" = "running"; then
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/usr/bin/systemctl restart dhcpd6.service
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fi
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fi
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}
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case "$mode" in
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*-up*)
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dhcpv4_server_restart
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dhcpv6_server_restart
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;;
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*-down*)
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# don't do anything
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;;
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*)
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echo "$SCRIPTNAME: don't know what to do" >&2
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;;
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esac
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