openrc/net/udhcpc.sh

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# Copyright (c) 2007-2008 Roy Marples <roy@marples.name>
# All rights reserved. Released under the 2-clause BSD license.
udhcpc_depend()
{
program start /sbin/udhcpc
after interface
provide dhcp
}
_config_vars="$_config_vars dhcp udhcpc"
# WARNING:- The relies heavily on Gentoo patches and scripts for udhcpc
udhcpc_start()
{
local args= opt= opts= pidfile="/var/run/udhcpc-${IFACE}.pid"
local sendhost=true cachefile="/var/cache/udhcpc-${IFACE}.lease"
eval args=\$udhcpc_${IFVAR}
# Get our options
eval opts=\$dhcp_${IFVAR}
[ -z "${opts}" ] && opts=${dhcp}
# Map some generic options to dhcpcd
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for opt in ${opts}; do
case "${opt}" in
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nodns) args="${args} --env PEER_DNS=no";;
nontp) args="${args} --env PEER_NTP=no";;
nogateway) args="${args} --env PEER_ROUTERS=no";;
nosendhost) sendhost=false;
esac
done
[ "${metric:-0}" != "0" ] && args="${args} --env IF_METRIC=${metric}"
ebegin "Running udhcpc"
# Try and load the cache if it exists
if [ -f "${cachefile}" ]; then
case "$ {args} " in
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*" --request="*|*" -r "*);;
*)
local x=$(cat "${cachefile}")
# Check for a valid ip
case "${x}" in
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*.*.*.*) args="${args} --request=${x}";;
esac
;;
esac
fi
case " ${args} " in
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*" --quit "*|*" -q "*) x="/sbin/udhcpc";;
*) x="start-stop-daemon --start --exec /sbin/udhcpc \
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--pidfile \"${pidfile}\" --";;
esac
case " ${args} " in
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*" --hosname="*|*" -h "*|*" -H "*);;
*)
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if ${sendhost}; then
local hname="$(hostname)"
if [ "${hname}" != "(none)" ] && [ "${hname}" != "localhost" ]; then
args="${args} --hostname='${hname}'"
fi
fi
;;
esac
local script="${RC_LIBEXECDIR}"/sh/udhcpc.h
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[ -x "${script}" ] || script=/lib/rcscripts/sh/udhcpc.sh
eval "${x}" "${args}" --interface="${IFACE}" --now \
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--script="${script}" \
--pidfile="${pidfile}" >/dev/null
eend $? || return 1
_show_address
return 0
}
udhcpc_stop()
{
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local pidfile="/var/run/udhcpc-${IFACE}.pid" opts=
[ ! -f "${pidfile}" ] && return 0
# Get our options
eval opts=\$dhcp_${IFVAR}
[ -z "${opts}" ] && opts=${dhcp}
ebegin "Stopping udhcpc on ${IFACE}"
case " ${opts} " in
*" release "*)
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start-stop-daemon --stop --quiet --oknodo --signal USR2 \
--exec /sbin/udhcpc --pidfile "${pidfile}"
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if [ -f /var/cache/udhcpc-"${IFACE}".lease ]; then
rm -f /var/cache/udhcpc-"${IFACE}".lease
fi
;;
esac
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start-stop-daemon --stop --exec /sbin/udhcpc --pidfile "${pidfile}"
eend $?
}