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# Copyright (c) 2007-2008 Roy Marples <roy@marples.name>
# Released under the 2-clause BSD license.
tuntap_depend()
{
before bridge interface macchanger
program ip openvpn tunctl
}
_config_vars="$_config_vars iproute2 openvpn tunctl"
_is_tuntap()
{
[ -n "$(RC_SVCNAME="net.${IFACE}"; export RC_SVCNAME ; service_get_value tuntap)" ]
}
tuntap_pre_start()
{
local tuntap=
local rc=
eval tuntap=\$tuntap_${IFVAR}
[ -z "${tuntap}" ] && return 0
if [ ! -e /dev/net/tun ]; then
if ! modprobe tun; then
eerror "TUN/TAP support is not present in this kernel"
return 1
fi
vebegin "Waiting for /dev/net/tun"
# /dev/net/tun can take its time to appear
local timeout=10
while [ ! -e /dev/net/tun -a ${timeout} -gt 0 ]; do
sleep 1
: $(( timeout -= 1 ))
done
if [ ! -e /dev/net/tun ]; then
eerror "TUN/TAP support present but /dev/net/tun is not"
return 1
fi
veend 0
fi
ebegin "Creating Tun/Tap interface ${IFACE}"
# Set the base metric to 1000
metric=1000
local i_opts= o_opts= t_opts=
local do_iproute2=false do_openvpn=false do_tunctl=false
eval i_opts=\$iproute2_${IFVAR}
eval o_opts=\$openvpn_${IFVAR}
eval t_opts=\$tunctl_${IFVAR}
if [ -n "${i_opts}" ] && type ip >/dev/null 2>&1; then
do_iproute2=true
elif [ -n "${o_opts}" ] && type openvpn >/dev/null 2>&1; then
do_openvpn=true
elif [ -n "${t_opts}" ] && type tunctl >/dev/null 2>&1; then
do_tunctl=true
elif type ip >/dev/null 2>&1; then
do_iproute2=true
elif type openvpn >/dev/null 2>&1; then
do_openvpn=true
elif type tunctl >/dev/null 2>&1; then
do_tunctl=true
fi
if ${do_iproute2}; then
ip tuntap add dev "${IFACE}" mode "${tuntap}" ${i_opts}
rc=$?
elif ${do_openvpn}; then
openvpn --mktun --dev-type "${tuntap}" --dev "${IFACE}" \
${o_opts} >/dev/null
rc=$?
elif ${do_tunctl}; then
tunctl ${t_opts} -t "${IFACE}" >/dev/null
rc=$?
else
eerror "Neither iproute2, openvpn nor tunctl has been found, please install"
eerror "either \"iproute2\" \"openvpn\" or \"usermode-utilities\"."
rc=1
fi
eend $rc && _up && service_set_value tuntap "${tuntap}"
}
tuntap_post_stop()
{
_is_tuntap || return 0
ebegin "Destroying Tun/Tap interface ${IFACE}"
if type ip > /dev/null 2>&1; then
ip tuntap del dev ${IFACE} mode $(service_get_value tuntap)
elif type tunctl >/dev/null 2>&1; then
tunctl -d "${IFACE}" >/dev/null
else
openvpn --rmtun \
--dev-type "$(service_get_value tuntap)" \
--dev "${IFACE}" >/dev/null
fi
eend $?
}
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