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|
#!/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
}
|
