network: Configure device names from /var/ipfire/ethernet/settings

Instead of creating a copy of the configuration values and
for better extensibility, we will have udev execute a script
that parses /var/ipfire/ethernet/settings and will return the
correct name of the corresponding device (green0, blue0, ...).

config/rootfiles/common/armv5tel/initscripts

@@ -60,6 +60,7 @@ etc/rc.d/init.d/mounttmpfs
 #etc/rc.d/init.d/mysql
 #etc/rc.d/init.d/netsnmpd
 etc/rc.d/init.d/network
+etc/rc.d/init.d/network-trigger
 etc/rc.d/init.d/network-vlans
 #etc/rc.d/init.d/networking
 etc/rc.d/init.d/networking/any
@@ -228,6 +229,7 @@ etc/rc.d/rcsysinit.d/S73swconfig
 etc/rc.d/rcsysinit.d/S75firstsetup
 etc/rc.d/rcsysinit.d/S80localnet
 etc/rc.d/rcsysinit.d/S85firewall
+etc/rc.d/rcsysinit.d/S90network-trigger
 etc/rc.d/rcsysinit.d/S91network-vlans
 etc/rc.d/rcsysinit.d/S92rngd
 etc/rc.d/rc3.d/S15fireinfo

config/rootfiles/common/i586/initscripts

@@ -62,6 +62,7 @@ etc/rc.d/init.d/mounttmpfs
 #etc/rc.d/init.d/mysql
 #etc/rc.d/init.d/netsnmpd
 etc/rc.d/init.d/network
+etc/rc.d/init.d/network-trigger
 etc/rc.d/init.d/network-vlans
 #etc/rc.d/init.d/networking
 etc/rc.d/init.d/networking/any
@@ -233,6 +234,7 @@ etc/rc.d/rcsysinit.d/S70console
 etc/rc.d/rcsysinit.d/S75firstsetup
 etc/rc.d/rcsysinit.d/S80localnet
 etc/rc.d/rcsysinit.d/S85firewall
+etc/rc.d/rcsysinit.d/S90network-trigger
 etc/rc.d/rcsysinit.d/S91network-vlans
 etc/rc.d/rcsysinit.d/S92rngd
 etc/rc.d/rc3.d/S15fireinfo

config/rootfiles/common/udev

@@ -2,7 +2,6 @@ bin/udevadm
 etc/modprobe.d/blacklist.conf
 etc/udev
 #etc/udev/rules.d
-#etc/udev/rules.d/30-persistent-network.rules
 #etc/udev/rules.d/55-lfs.rules
 #etc/udev/rules.d/81-cdrom.rules
 #etc/udev/rules.d/83-cdrom-symlinks.rules
@@ -29,6 +28,7 @@ lib/udev
 #lib/udev/hwdb.d/60-keyboard.hwdb
 #lib/udev/init-net-rules.sh
 #lib/udev/mtd_probe
+#lib/udev/network-hotplug-rename
 #lib/udev/rule_generator.functions
 #lib/udev/rules.d
 #lib/udev/rules.d/25-alsa.rules
@@ -37,6 +37,7 @@ lib/udev
 #lib/udev/rules.d/50-udev-default.rules
 #lib/udev/rules.d/60-cdrom_id.rules
 #lib/udev/rules.d/60-keyboard.rules
+#lib/udev/rules.d/60-net.rules
 #lib/udev/rules.d/60-persistent-alsa.rules
 #lib/udev/rules.d/60-persistent-input.rules
 #lib/udev/rules.d/60-persistent-serial.rules

config/udev/60-net.rules

@@ -0,0 +1,3 @@
+# Call a script that checks for the right name of the new device.
+# If it matches the configuration it will be renamed accordingly.
+ACTION=="add", SUBSYSTEM=="net", PROGRAM="/lib/udev/network-hotplug-rename", RESULT=="?*", NAME="$result"

config/udev/network-hotplug-rename

@@ -0,0 +1,75 @@
+#!/bin/bash
+###############################################################################
+#                                                                             #
+# IPFire.org - A linux based firewall                                         #
+# Copyright (C) 2015  IPFire Team  <info@ipfire.org>                          #
+#                                                                             #
+# This program is free software: you can redistribute it and/or modify        #
+# it under the terms of the GNU General Public License as published by        #
+# the Free Software Foundation, either version 3 of the License, or           #
+# (at your option) any later version.                                         #
+#                                                                             #
+# This program is distributed in the hope that it will be useful,             #
+# but WITHOUT ANY WARRANTY; without even the implied warranty of              #
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               #
+# GNU General Public License for more details.                                #
+#                                                                             #
+# You should have received a copy of the GNU General Public License           #
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.       #
+#                                                                             #
+###############################################################################
+
+# Check if all appropriate variables are set
+[ -n "${INTERFACE}" ] || exit 2
+
+# Ignore virtual interfaces, etc.
+case "${INTERFACE}" in
+	lo)
+		exit 0
+		;;
+	tun*)
+		exit 0
+		;;
+	ppp*)
+		exit 0
+		;;
+esac
+
+# Check if INTERFACE actually exists
+[ -d "/sys/class/net/${INTERFACE}" ] || exit 1
+
+# If the network configuration is not readable,
+# we cannot go on.
+if [ ! -r "/var/ipfire/ethernet/settings" ]; then
+	exit 1
+fi
+
+# Read network settings
+eval $(/usr/local/bin/readhash /var/ipfire/ethernet/settings)
+
+# Standard zones
+ZONES="RED GREEN ORANGE BLUE"
+
+# Determine the address of INTERFACE
+ADDRESS="$(</sys/class/net/${INTERFACE}/address)"
+
+# Walk through all zones and find the matching interface
+for zone in ${ZONES}; do
+	address="${zone}_MACADDR"
+	device="${zone}_DEV"
+
+	# Skip if address or device is unset
+	[ -n "${!address}" -a -n "${!device}" ] || continue
+
+	# If a matching interface has been found we will
+	# print the name to which udev will rename it.
+	if [ "${ADDRESS}" = "${!address}" ]; then
+		echo "${!device}"
+		exit 0
+	fi
+done
+
+# If we get here we have not found a matching device,
+# but we won't return an error any way. The new device
+# will remain with the previous name.
+exit 0

lfs/initscripts

@@ -176,6 +176,7 @@ $(TARGET) :
 	ln -sf ../init.d/firstsetup  /etc/rc.d/rcsysinit.d/S75firstsetup
 	ln -sf ../init.d/localnet    /etc/rc.d/rcsysinit.d/S80localnet
 	ln -sf ../init.d/firewall    /etc/rc.d/rcsysinit.d/S85firewall
+	ln -sf ../init.d/network-trigger /etc/rc.d/rcsysinit.d/S90network-trigger
 	ln -sf ../init.d/network-vlans /etc/rc.d/rcsysinit.d/S91network-vlans
 	ln -sf ../init.d/rngd        /etc/rc.d/rcsysinit.d/S92rngd
 	ln -sf ../init.d/wlanclient  /etc/rc.d/rc0.d/K82wlanclient

lfs/udev

@@ -93,9 +93,6 @@ $(TARGET) : $(patsubst %,$(DIR_DL)/%,$(objects))
 	rm -f /lib/udev/rules.d/75-persistent-net-generator.rules
 	rm -f /lib/udev/rules.d/80-net-name-slot.rules
 
-	# Create rule file for the setup
-	touch /etc/udev/rules.d/30-persistent-network.rules
-
 	# Blacklist some modules
 	cp -vf $(DIR_SRC)/config/udev/blacklist.conf /etc/modprobe.d/blacklist.conf
 
@@ -107,6 +104,12 @@ $(TARGET) : $(patsubst %,$(DIR_DL)/%,$(objects))
 	install -v -m 644 $(DIR_SRC)/config/udev/25-alsa.rules \
 		/lib/udev/rules.d
 
+	# Install network rules.
+	install -v -m 755 $(DIR_SRC)/config/udev/network-hotplug-rename \
+		/lib/udev/network-hotplug-rename
+	install -v -m 644 $(DIR_SRC)/config/udev/60-net.rules \
+		/lib/udev/rules.d
+
 	# Install hwrng rules.
 	install -v -m 644 $(DIR_SRC)/config/udev/90-hwrng.rules \
 		/lib/udev/rules.d

src/initscripts/init.d/network-trigger

@@ -0,0 +1,22 @@
+#!/bin/sh
+########################################################################
+# Begin $rc_base/init.d/network-trigger
+########################################################################
+
+. /etc/sysconfig/rc
+. ${rc_functions}
+
+case "${1}" in
+	start)
+		boot_mesg "Triggering network devices..."
+		udevadm trigger --action="add" --subsystem-match="net"
+		evaluate_retval
+		;;
+
+	*)
+		echo "Usage: ${0} {start}"
+		exit 1
+		;;
+esac
+
+# End $rc_base/init.d/network-trigger