daemon ssd mode: always setsid, so programs that properly don't daemonize get detache...

[projects/rc-scripts.git] / lib / ifup

#!/bin/sh
#
#
PATH=/sbin:/usr/sbin:/bin:/usr/bin

. /etc/sysconfig/network
. /etc/rc.d/init.d/functions
. /lib/rc-scripts/functions.network

# Will be removed in the future
if is_yes "$NETWORKING"; then
	if [ -z "$IPV4_NETWORKING" ]; then
		echo "NETWORKING is set to YES, but IPV4_NETWORKING is empty!"
		echo "Please upgrade your config"
		echo "Assuming you want IPv4 networking"
		IPV4_NETWORKING=yes
		export IPV4_NETWORKING
	fi
fi

need_hostname

# device name must be ifcfg-somename
DEV=$1

[ -z "$DEV" ] && {
	nls "Usage: %s <device name>" "ifup" >&2
	exit 1
}

if [ $(id -u) != 0 ]; then
	if [ -x /sbin/usernetctl ]; then
		exec /sbin/usernetctl $DEV up
	fi
	nls "Users cannot control this device." >&2
	exit 1
fi

if [ -f "/etc/sysconfig/interfaces/ifcfg-$DEV" ]; then
	CONFIG="/etc/sysconfig/interfaces/ifcfg-$DEV"
elif [ -f "/etc/sysconfig/interfaces/$DEV" ]; then
	CONFIG="/etc/sysconfig/interfaces/$DEV"
else
	CONFIG="$DEV"
fi

source_config

if [ "foo$2" = "fooboot" ] && is_no "${ONBOOT}"; then
	exit
fi

if [ "foo$2" = "foohotplug" ] && ! is_yes "${HOTPLUG}"; then
	exit
fi

if [ "foo$2" = "foopcmcia-hotplug" ] && ! is_yes "${PCMCIA_HOTPLUG}"; then
	exit
fi

IPSETUP=no

# set all major variables
setup_ip_param

SYSCTLDEVICE=$(echo ${DEVICE} | sed 's/\./\//g')

OTHERSCRIPT="/lib/rc-scripts/ifup-${DEVICETYPE}"

if [ -x "$OTHERSCRIPT" ]; then
	if is_yes "$DEFAULTHANDLING"; then
		HANDLING=1
	fi
	if [ "$HANDLING" = "0" ]; then
		exec $OTHERSCRIPT $CONFIG $2
	elif [ "$HANDLING" = "1" ]; then
		$OTHERSCRIPT $CONFIG $2
	fi
fi

if [ -n "$MACVLAN_DEV" -a -n "$MACVLAN_MACADDR" ]; then
	ip link del link ${MACVLAN_DEV} ${DEVICE} type macvlan > /dev/null 2>&1
	ip link add link ${MACVLAN_DEV} address ${MACVLAN_MACADDR} ${DEVICE} type macvlan
fi

# is this device available? (this catches PCMCIA devices for us)
if ! /sbin/ip link set multicast ${MULTICAST} dev ${DEVICE} > /dev/null 2>&1; then
	nls "Delaying %s initialization" ${DEVICE}
	exit 1
fi

if is_yes "$SLAVE" && [ ! -x /sbin/ifenslave ]; then
	nls "%s is missing. Can't continue." "/sbin/ifenslave"
	exit 1
fi

if is_yes "$SLAVE" && [ -n "$MASTER" -a -x /sbin/ifenslave ]; then
	RFLAG="" && is_yes "${RECIEVE-ONLY}" && RFLAG="-r"

	ip link set ${DEVICE} down
	nls "Enslaving %s to %s" "$DEVICE" "$MASTER"
	ifenslave $RFLAG "$MASTER" "$DEVICE"

	if [ -n "$ETHTOOL_OPTS" ] ; then
		/sbin/ethtool -s $DEVICE $ETHTOOL_OPTS
	fi

	exit 0
fi

if [ -n "$MACADDR" ]; then
	ip link set ${DEVICE} address ${MACADDR}
fi

ip link set ${DEVICE} multicast ${MULTICAST} ${ARP} down

if [ -n "$MTU" ]; then
	ip link set ${DEVICE} mtu ${MTU}
fi

if is_yes "${IPV6_NETWORKING}" && is_yes "${IPV6_DISABLE_AUTOCONF}"; then
	run_cmd "Disabling IPv6 autoconfiguration" sysctl -w net.ipv6.conf.${SYSCTLDEVICE}.autoconf=0
fi

if is_wireless_device "${DEVICE}"; then
	is_yes "${WLAN_UPEARLY}" && ip link set ${DEVICE} up
	wireless_param ${DEVICE}
fi

if is_yes "${WLAN_WPA}"; then
	/usr/sbin/wpa_supplicant -D ${WLAN_WPA_DRIVER:-wext} -c ${WLAN_WPA_CONFIG:-/etc/wpa_supplicant.conf} -i ${DEVICE} ${WLAN_WPA_OPTIONS} -P "/var/run/wpa_supplicant-${DEVICE}.pid" -B
	[ -z "$WLAN_WPA_WAIT_TIMEOUT" ] && WLAN_WPA_WAIT_TIMEOUT=15
	# check_link_down sleeps for 0.5s
	check_link_down ${DEVICE} $(( $WLAN_WPA_WAIT_TIMEOUT * 2 ))
fi

if [ "$HANDLING" = "2" ]; then
	exit 0
fi

if [ -n "$BOOTPROTO" -a "$BOOTPROTO" != "none" -a "$BOOTPROTO" != "static" ]; then
	if is_yes "$IPV4_NETWORKING"; then
		set_dhcpclient

		DHCP_ARGS=
		if [ -n "$DHCP_CLIENT" ]; then
			if [ -z "$DHCP_HOSTNAME" ]; then
				# set DHCP_HOSTNAME only basename
				DHCP_HOSTNAME=${HOSTNAME%%.*}
			fi
			case ${DHCP_CLIENT##*/} in
			  pump)
				[ -n "$DHCP_HOSTNAME" ] && DHCP_ARGS="-h $DHCP_HOSTNAME"
				DHCP_ARGS="$DHCP_ARGS -i $DEVICE"
				;;
			  dhcpcd)
				[ -n "$DHCP_HOSTNAME" ] && DHCP_ARGS="-h $DHCP_HOSTNAME"
				DHCP_ARGS="$DHCP_ARGS $DEVICE"
				if is_no "$ZEROCONF"; then
					DHCP_ARGS="$DHCP_ARGS --noipv4ll"
				fi
				;;
			  dhcpxd)
				[ -n "$DHCP_HOSTNAME" ] && DHCP_ARGS="-H $DHCP_HOSTNAME"
				DHCP_ARGS="$DHCP_ARGS $DEVICE"
				;;
			  dhclient)
				# Can't specify a host with dhclient ?
				DHCP_ARGS="$DEVICE -pf /var/run/dhclient.$DEVICE.pid -lf /var/lib/dhclient/dhclient.$DEVICE.leases"
				if [ -f /etc/dhclient.$DEVICE.conf ] ; then
					DHCP_ARGS="$DHCP_ARGS -cf /etc/dhclient.$DEVICE.conf"
				fi
				;;
			  avahi-autoipd)
				DHCP_ARGS="-D $DEVICE"
				;;
			esac
		fi
		DHCP_ARGS="$DHCP_OPTIONS $DHCP_ARGS"

		if check_link_down ${DEVICE}; then
			run_cmd "$(nls 'Determining IP information for %s (%s)' "$DEVICE" "${DHCP_CLIENT##*/}")" /bin/false
			nls '%s: Check cable/radio on-off switch?' "$DEVICE"
			exit 1
		fi

		if ! run_cmd "$(nls 'Determining IP information for %s (%s)' "$DEVICE" "${DHCP_CLIENT##*/}")" $DHCP_CLIENT $DHCP_ARGS; then
			exit 1
		fi

		# give time for determining IP information
		check_device_down && sleep 1 && check_device_down && sleep 3
		check_device_down && ip link set ${DEVICE} up
	fi
else
	# IPv4 in use ?
	if is_yes "$IPV4_NETWORKING" && [ -n "${IP4ADDR}" ]; then
		# If broadcast is missing then autocalculate it
		if ! (echo $IP4ADDROPT | grep -qE "brd|broadcast"); then
			IP4ADDROPT="brd + ${IP4ADDROPT}"
		fi

		if [ -n "${SUBDEVICE}" ]; then
			ALIAS="label ${SUBDEVICE}"
		fi

		if [ -n "$REMIP" ]; then
			ip addr add ${IP4ADDR} peer ${REMIP} ${ALIAS} dev ${DEVICE} ${IP4ADDROPT}
		else
			ip addr add ${IP4ADDR} ${ALIAS} dev ${DEVICE} ${IP4ADDROPT}
		fi
	fi

	# Set device up
	ip link set ${DEVICE} up

	# IPv6 in use ?
	if is_yes "$IPV6_NETWORKING" && [ -n "${IP6ADDR}" ]; then
		ip addr add ${IP6ADDR} dev ${DEVICE} ${IP6ADDROPT}
		if [ -n "${IP6ADDRLABEL}" ]; then
			ip addrlabel add prefix ${IP6ADDR} dev ${DEVICE} label ${IP6ADDRLABEL}
		fi
	fi

	if is_yes "$IPV4_NETWORKING" && [ -n "${IP4ADDR}" -a -x /sbin/arping ]; then
		# update ARP cache of neighbouring computers
		/sbin/arping -q -A -c 1 -I ${DEVICE} ${IP4ADDR%/*}
		{ ( sleep 2; /sbin/arping -q -U -c 1 -I ${DEVICE} ${IP4ADDR%/*} ) & } > /dev/null 2>&1
	fi

	# IPv4/6 gateways and default routes
	setup_ip_gw_ro
fi

# device have to have ip address set before
if is_yes "$PROXYARP"; then
	run_cmd "$(nls 'Enabling proxy ARP on %s' "${DEVICE}")" sysctl -w net.ipv4.conf.${SYSCTLDEVICE}.proxy_arp=1
fi

if [ "$HANDLING" = "3" ]; then
	exit 0
fi

if is_yes "$IPX"; then
	/lib/rc-scripts/ifup-ipx $DEVICE
fi

if is_yes "$ENABLE_6TO4"; then
	# find an usable IPv4 address for this device; might have been obtained by dhcp or ppp
	for ipv4 in `/sbin/ip addr show dev $DEVICE | awk -F'[ /]+' '/ inet /{print $3}'`; do
		if [       `ipcalc -n $ipv4/8`  != "NETWORK=10.0.0.0"    \
			-a `ipcalc -n $ipv4/12` != "NETWORK=172.16.0.0"  \
			-a `ipcalc -n $ipv4/24` != "NETWORK=192.168.0.0" \
			-a `ipcalc -n $ipv4/24` != "NETWORK=169.254.0.0" ]; then
			local_ipv4=$ipv4
			local_ipv6=`printf "2002:%02x%02x:%02x%02x::1" $(echo $ipv4 | tr . ' ')`
			break
		fi
	done
	if [ -n "$local_ipv4" ]; then	# we have an usable IPv4 address; set up the tunnel
		tun6to4=tun6to4_$DEVICE
		/sbin/ip tunnel add $tun6to4 mode sit ttl 128 remote any local $local_ipv4
		/sbin/ip link set dev $tun6to4 up
		/sbin/ip -6 addr  add $local_ipv6/16 dev $tun6to4
		/sbin/ip -6 route add 2000::/3 via ::192.88.99.1 dev $tun6to4 metric 1
	fi
fi

if [ "$HANDLING" = "4" ]; then
	exit 0
fi

exec /lib/rc-scripts/ifup-post $CONFIG