openrc/net/dhclient.sh

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# Copyright (c) 2007-2008 Roy Marples <roy@marples.name>
# All rights reserved. Released under the 2-clause BSD license.
dhclient_depend()
{
after interface
program start /sbin/dhclient
provide dhcp
}
_config_vars="$_config_vars dhcp dhcpcd"
dhclient_start()
{
local args= opt= opts= pidfile="/var/run/dhclient-${IFACE}.pid"
local sendhost=true dconf=
# Get our options
# These options only work in Gentoo, and maybe RedHat
eval opts=\$dhcp_${IFVAR}
[ -z "${opts}" ] && opts=${dhcp}
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for opt in ${opts}; do
case "${opt}" in
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nodns) args="${args} -e PEER_DNS=no";;
nontp) args="${args} -e PEER_NTP=no";;
nogateway) args="${args} -e PEER_ROUTERS=no";;
nosendhost) sendhost=false;;
esac
done
# Add our route metric
[ "${metric:-0}" != "0" ] && args="${args} -e IF_METRIC=${metric}"
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if ${sendhost}; then
local hname="$(hostname)"
if [ "${hname}" != "(none)" -a "${hname}" != "localhost" ]; then
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dhconf="${dhconf} interface \"${IFACE}\" {"
dhconf="${dhconf} send host-name \"${hname}\";"
dhconf="${dhconf}}"
fi
fi
# Bring up DHCP for this interface
ebegin "Running dhclient"
echo "${dhconf}" | start-stop-daemon --start --exec /sbin/dhclient \
--pidfile "${pidfile}" \
-- ${args} -q -1 -pf "${pidfile}" "${IFACE}"
eend $? || return 1
_show_address
return 0
}
dhclient_stop()
{
local pidfile="/var/run/dhclient-${IFACE}.pid" opts=
[ ! -f "${pidfile}" ] && return 0
# Get our options
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if [ -x /sbin/dhclient ]; then
eval opts=\$dhcp_${IFVAR}
[ -z "${opts}" ] && opts=${dhcp}
fi
ebegin "Stopping dhclient on ${IFACE}"
case " ${opts} " in
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*" release "*) dhclient -q -r -pf "${pidfile}" "${IFACE}";;
*)
start-stop-daemon --stop --quiet \
--exec /sbin/dhclient --pidfile "${pidfile}"
;;
esac
eend $?
}