#!/bin/sh set -e determine_implementation() { [ -n "$IF_DHCP_PROGRAM" ] && echo "$IF_DHCP_PROGRAM" && return [ -x /sbin/dhcpcd ] && echo "dhcpcd" && return [ -x /usr/sbin/dhclient ] && echo "dhclient" && return [ -x /sbin/udhcpc ] && echo "udhcpc" && return echo "could not find a supported DHCP implementation" exit 1 } start() { case "$1" in dhcpcd) [ -n "$IF_HOSTNAME" ] && optargs="$optargs -h $IF_HOSTNAME" [ -n "$IF_VENDOR" ] && optargs="$optargs -i $IF_VENDOR" [ -n "$IF_CLIENT" ] && optargs="$optargs -i $IF_CLIENT" [ -n "$IF_LEASETIME" ] && optargs="$optargs -l $IF_LEASETIME" ${MOCK} /sbin/dhcpcd $optargs $IFACE ;; dhclient) ${MOCK} /usr/sbin/dhclient -pf /var/run/dhclient.$IFACE.pid $IFACE ;; udhcpc) ${MOCK} /sbin/udhcpc -b -R -p /var/run/udhcpc.$IFACE.pid -i $IFACE ;; *) ;; esac } stop() { case "$1" in dhcpcd) ${MOCK} /sbin/dhcpcd -k $IFACE ;; dhclient) ${MOCK} kill -9 $(cat /var/run/dhclient.$IFACE.pid) 2>/dev/null ;; udhcpc) ${MOCK} kill $(cat /var/run/udhcpc.$IFACE.pid) ;; *) ;; esac } impl=$(determine_implementation) [ -z "$VERBOSE" ] || set -x case "$PHASE" in up) start $impl ;; down) stop $impl ;; *) ;; esac