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#!/bin/sh
# Copyright (c) 2012 - OpenSLX GmbH
#
# This program is free software distributed under the GPL version 2.
# See http://openslx.org/COPYING
#
# If you have any feedback please consult http://openslx.org/feedback and
# send your feedback to feedback@openslx.org
#
# General information about OpenSLX can be found at http://openslx.org
#
# First script for initial ramfs for OpenSLX linux stateless clients
#############################################################################
export PATH=/bin:/sbin:/usr/bin:/usr/sbin
export LD_LIBRARY_PATH=/usr/lib64
mount -n -t tmpfs -o 'mode=755' run "/run"
# mount the important standard directories
[ ! -f /proc/cpuinfo ] && mount -n -t proc proc /proc
[ ! -d /sys/class ] && mount -n -t sysfs sysfs /sys
echo "/sbin/mdev" > /proc/sys/kernel/hotplug
# read graphic and network adaptor configuration (without proprietary drivers yet)
# TODO: must ugly hack ever... needs to be improved when we add prop drivers
for DRM in /lib/modules/*/kernel/drivers/gpu/drm/*.ko /lib/modules/*/kernel/drivers/gpu/drm/*/*.ko; do
echo "Trying to load module $DRM"
insmod "$DRM"
done
# read kernel command line for debugging switch
DEBUG=0
read KCL < /proc/cmdline
export KCL
for opts in ${KCL}; do
case ${opts} in
debug*)
DEBUG=1 ;;
splash*)
SPLASH=1 ;;
ip=*)
# process IP info
ipinfo=${opts#ip=} ;;
nfs=*)
nfs=${opts#nfs=}
nfspath=${nfs#*:}
nfsserver=${nfs%:/*}
;;
BOOTIF=*)
macaddr="$( echo "$opts" | cut -b 11- | tr '-' ':' )" ;;
esac
done
echo "Mac address is '$macaddr'"
mdev -s &
if [ "x$SPLASH" == "x1" -a "x$DEBUG" != "x1" ]; then
# start plymouth
plymouthd && plymouth show-splash
fi
# still needed?
#echo "modprobe -qa usbhid hid-bright" >/etc/modprobe.base
#/bin/sh /etc/modprobe.base; mdev -s
# setup network
nwif="eth0"
# set up loopback networking
echo "Setting up loopback"
ip link set dev lo up 2>/dev/null
ip addr add 127.0.0.1/8 dev lo 2>/dev/null
echo "Setting up $nwif"
ip link set dev $nwif up 2>/dev/null || { echo "No link for $nwif, dropping to shell.."; setsid sh -c 'exec sh </dev/tty1 >/dev/tty1 2>&1'; }
# analyze ip information from the kernel command line and put parts
# of it into several variables
if [ -n "$ipinfo" ] ; then
getip () {
local val="$ipinfo:"; i=$(($1 - 1));
while [ $i -gt 0 ] ; do
val=${val#*:} ; i=$(($i - 1));
done;
echo $val|sed "s/:.*//"; }
clientip=$(getip 1)
serverip=$(getip 2)
gateway=$(getip 3)
subnet_mask=$(getip 4)
broadcast_address=$(ipcalc -s -b $clientip $subnet_mask|sed s/.*=//)
[ -z "$broadcast_address" ] && broadcast_address=255.255.255.255
# we might have an idea of the dns server via preboot
dns_srv=$(getip 5)
[ -n "$dns_srv" ] && echo nameserver $dns_srv >/etc/resolv.conf;
echo -e "# ip configuration written by $0 script:\nclientip=$clientip\n\
subnet_mask=$subnet_mask\ngateway=$gateway\nserverip=$serverip\n\
broadcast_address=$broadcast_address" >>/etc/initramfs-setup
# set static ip address
ip addr add $clientip/$(ipcalc -s -p $clientip $subnet_mask|sed s/.*=//) \
broadcast $broadcast_address dev $nwif 2>/dev/null
ip route add default via $gateway 2>/dev/null
else
noipyet="yes"
fi
# load local file systems - in kernel now! :-)
#modprobe aufs
#modprobe squashfs
mkdir -p /dev/shm/union /dev/shm/uniontmp /rorootfs
mount -n -t tmpfs none /dev/shm/uniontmp
if [ -n "$nfs" ] ; then
echo "Mounting stage 3.2 as NFS"
mount -t nfs -o ro,async,nolock ${nfsserver}:${nfspath} /rorootfs || { echo "Problem mounting NFS-Directory from ${nfsserver}:${nfspath}. Dropping to DEBUG shell."; DEBUG=1; }
else
echo "Mounting stage 3.2 as SquashFS"
mount -t squashfs /mnt/$(ls /mnt) /rorootfs || { echo "Problem mounting Squashfs. Dropping to DEBUG shell."; DEBUG=1; }
fi
if [ $DEBUG -ge 1 ]; then
echo "Starting debug shell, CTRL + D will start Stage 3.2."
setsid sh -c 'exec sh </dev/tty1 >/dev/tty1 2>&1'
else
#Debug is not set so hide kernel debug output
echo "0" >/proc/sys/kernel/printk
fi
echo "Building aufs..."
mount -n -t aufs -o br:/dev/shm/uniontmp:/rorootfs=ro none /mnt
mkdir -p /mnt/uniontmp /mnt/tmp
mount -n --move /dev/shm/uniontmp /mnt/uniontmp
# create udev rule for nic we booted from
echo 'SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="'$macaddr'", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="eth0"' > "/mnt/etc/udev/rules.d/70-net-boot-nic-name.rules"
for mnt in proc sys run ; do
umount -n $mnt
done
echo "Switching root...."
unset BOOT_IMAGE initrd
[ "x$SPLASH" == "x1" -a "x$DEBUG" != "x1" ] && plymouth update-root-fs --new-root-dir=/mnt
# new style of pivoting (switch_root or run-init)
exec /sbin/switch_root -c /dev/console /mnt /usr/lib/systemd/systemd
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