From 32322960234c8ec91e0d42835a3ec5ee63305070 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sat, 2 Feb 2019 11:00:00 +0100
Subject: Adding upstream version 20190202.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 system-boot/components/9990-networking.sh | 179 ++++++++++++++++++++++++++++++
 1 file changed, 179 insertions(+)
 create mode 100755 system-boot/components/9990-networking.sh

(limited to 'system-boot/components/9990-networking.sh')

diff --git a/system-boot/components/9990-networking.sh b/system-boot/components/9990-networking.sh
new file mode 100755
index 0000000..9cc3674
--- /dev/null
+++ b/system-boot/components/9990-networking.sh
@@ -0,0 +1,179 @@
+#!/bin/sh
+
+#set -e
+
+Device_from_bootif ()
+{
+	# support for Syslinux IPAPPEND parameter
+	# it sets the BOOTIF variable on the kernel parameter
+
+	if [ -n "${BOOTIF}" ]
+	then
+		# pxelinux sets BOOTIF to a value based on the mac address of the
+		# network card used to PXE boot, so use this value for DEVICE rather
+		# than a hard-coded device name from initramfs.conf. this facilitates
+		# network booting when machines may have multiple network cards.
+		# pxelinux sets BOOTIF to 01-$mac_address
+
+		# strip off the leading "01-", which isn't part of the mac
+		# address
+		temp_mac=${BOOTIF#*-}
+
+		# convert to typical mac address format by replacing "-" with ":"
+		bootif_mac=""
+		IFS='-'
+		for x in $temp_mac
+		do
+			if [ -z "$bootif_mac" ]
+			then
+				bootif_mac="$x"
+			else
+				bootif_mac="$bootif_mac:$x"
+			fi
+		done
+		unset IFS
+
+		# look for devices with matching mac address, and set DEVICE to
+		# appropriate value if match is found.
+
+		for device in /sys/class/net/*
+		do
+			if [ -f "$device/address" ]
+			then
+			current_mac=$(cat "$device/address")
+
+				if [ "$bootif_mac" = "$current_mac" ]
+				then
+					DEVICE=${device##*/}
+					break
+				fi
+			fi
+		done
+	fi
+}
+
+do_netsetup ()
+{
+	modprobe -q af_packet # For DHCP
+
+	udevadm trigger
+	udevadm settle
+
+	[ -n "$ETHDEV_TIMEOUT" ] || ETHDEV_TIMEOUT=15
+	echo "Using timeout of $ETHDEV_TIMEOUT seconds for network configuration."
+
+	if [ -z "${NETBOOT}" ] && [ -z "${FETCH}" ] && [ -z "${HTTPFS}" ] && [ -z "${FTPFS}" ]
+	then
+		# See if we can select the device from BOOTIF
+		Device_from_bootif
+
+		# if ethdevice was not specified on the kernel command line
+		# make sure we try to get a working network configuration
+		# for *every* present network device (except for loopback of course)
+		if [ -z "$ETHDEVICE" ]
+		then
+			echo "If you want to boot from a specific device use bootoption ethdevice=..."
+			for device in /sys/class/net/*
+			do
+				dev=${device##*/}
+				if [ "$dev" != "lo" ]
+				then
+					ETHDEVICE="$ETHDEVICE $dev"
+				fi
+			done
+		fi
+
+		# split args of ethdevice=eth0,eth1 into "eth0 eth1"
+		for device in $(echo "$ETHDEVICE" | sed 's/,/ /g')
+		do
+			devlist="$devlist $device"
+		done
+
+		for dev in $devlist
+		do
+			echo "Executing ipconfig -t $ETHDEV_TIMEOUT $dev"
+			ipconfig -t "$ETHDEV_TIMEOUT" "$dev" | tee -a /netboot.config
+
+			# if configuration of device worked we should have an assigned
+			# IP address, if so let's use the device as $DEVICE for later usage.
+			# simple and primitive approach which seems to work fine
+			if ifconfig "$dev" | grep -q -E 'inet.*addr:|inet [0-9][0-9]*.[0-9][0-9]*.[0-9][0-9]*.[0-9][0-9]*'
+			then
+				export DEVICE="$dev"
+				break
+			fi
+		done
+	else
+		for interface in ${DEVICE}; do
+			ipconfig -t "$ETHDEV_TIMEOUT" "${interface}" | tee "/netboot-${interface}.config"
+
+			[ -e "/run/net-${interface}.conf" ] && . "/run/net-${interface}.conf"
+
+			if [ "$IPV4ADDR" != "0.0.0.0" ]
+			then
+				break
+			fi
+		done
+	fi
+
+	for interface in ${DEVICE}
+	do
+		# source relevant ipconfig output
+		OLDHOSTNAME=${HOSTNAME}
+
+		[ -e "/run/net-${interface}.conf" ] && . "/run/net-${interface}.conf"
+
+		[ -z "${HOSTNAME}" ] && HOSTNAME="${OLDHOSTNAME}"
+		export HOSTNAME
+
+		if [ -n "${interface}" ]
+		then
+			HWADDR="$(cat "/sys/class/net/${interface}/address")"
+		fi
+
+		# Only create /etc/hosts if FQDN is known (to let 'hostname -f' query
+		# this file). Otherwise DNS will be queried to determine the FQDN.
+		if [ ! -e "/etc/hosts" ] && [ -n "${DNSDOMAIN}" ]
+		then
+			echo "Creating /etc/hosts"
+			cat > /etc/hosts <<EOF
+127.0.0.1	localhost
+127.0.1.1	${HOSTNAME}.${DNSDOMAIN}	${HOSTNAME}
+
+# The following lines are desirable for IPv6 capable hosts
+::1     localhost ip6-localhost ip6-loopback
+ff02::1 ip6-allnodes
+ff02::2 ip6-allrouters
+EOF
+		fi
+
+		if [ ! -e "/etc/resolv.conf" ]
+		then
+			echo "Creating /etc/resolv.conf"
+
+			if [ -n "${DNSDOMAIN}" ]
+			then
+				echo "domain ${DNSDOMAIN}" > /etc/resolv.conf
+				echo "search ${DNSDOMAIN}" >> /etc/resolv.conf
+			fi
+
+			for i in ${IPV4DNS0} ${IPV4DNS1} ${IPV4DNS1} ${DNSSERVERS}
+			do
+				if [ -n "$i" ] && [ "$i" != 0.0.0.0 ]
+				then
+					echo "nameserver $i" >> /etc/resolv.conf
+				fi
+			done
+		fi
+
+		# Check if we have a network device at all
+		if ! ls /sys/class/net/"$interface" > /dev/null 2>&1 && \
+		   ! ls /sys/class/net/eth0 > /dev/null 2>&1 && \
+		   ! ls /sys/class/net/wlan0 > /dev/null 2>&1 && \
+		   ! ls /sys/class/net/ath0 > /dev/null 2>&1 && \
+		   ! ls /sys/class/net/ra0 > /dev/null 2>&1
+		then
+			panic "No supported network device found, maybe a non-mainline driver is required."
+		fi
+	done
+}
-- 
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