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|
#!/bin/sh
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 "${FTPFS}" ]
then
# support for Syslinux IPAPPEND parameter
# it sets the BOOTIF variable on the kernel parameter
if [ -n "${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=${device##*/}
break
fi
fi
done
fi
# if ethdevice was not specified on the kernel command line
# make sure we try to get a working network configuration
# for *every* present network device (except for loopback of course)
if [ -z "$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 $device"
done
# this is tricky (and ugly) because ipconfig sometimes just hangs/runs into
# an endless loop; if execution fails give it two further tries, that's
# why we use '$devlist $devlist $devlist' for the other for loop
for dev in $devlist $devlist $devlist ; do
echo "Executing ipconfig -t $ETHDEV_TIMEOUT $dev"
ipconfig -t "$ETHDEV_TIMEOUT" $dev | tee -a /netboot.config &
jobid=$!
sleep "$ETHDEV_TIMEOUT" ; sleep 1
if [ -r /proc/"$jobid"/status ] ; then
echo "Killing job $jobid for device $dev as ipconfig ran into recursion..."
kill -9 $jobid
fi
# 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 $dev | grep -q 'inet.*addr:' ; then
export DEVICE="$dev"
break
fi
done
else
for interface in ${DEVICE}; do
ipconfig -t "$ETHDEV_TIMEOUT" ${interface} | tee /netboot-${interface}.config
[ -e /tmp/net-${interface}.conf ] && . /tmp/net-${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 /tmp/net-${interface}.conf ] && . /tmp/net-${interface}.conf
[ -z ${HOSTNAME} ] && HOSTNAME=${OLDHOSTNAME}
export HOSTNAME
if [ -n "${interface}" ]
then
HWADDR="$(cat /sys/class/net/${interface}/address)"
fi
if [ ! -e "/etc/resolv.conf" ]
then
echo "Creating /etc/resolv.conf"
if [ -n "${DNSDOMAIN}" ]
then
echo "domain ${DNSDOMAIN}" > /etc/resolv.conf
echo "search ${DNSDOMAIN}" >> /etc/resolv.conf
fi
for i in ${IPV4DNS0} ${IPV4DNS1} ${IPV4DNS1}
do
if [ -n "$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
}
|
