From 102beba757a8ab12a79d457070fdbae93bc78ca2 Mon Sep 17 00:00:00 2001
From: Dirk von Suchodoletz
Date: Fri, 3 Aug 2007 22:54:34 +0000
Subject: Raw concept of cd-demo initramfs generation and init script are done,
 see comments in #153 ...

git-svn-id: http://svn.openslx.org/svn/openslx/trunk@1316 95ad53e4-c205-0410-b2fa-d234c58c8868
---
 initramfs/cdboot/init | 62 ++++++++++++++++++++++++++++++++++++++-------------
 1 file changed, 46 insertions(+), 16 deletions(-)

(limited to 'initramfs')

diff --git a/initramfs/cdboot/init b/initramfs/cdboot/init
index eb95c8fe..fbd7bdbf 100755
--- a/initramfs/cdboot/init
+++ b/initramfs/cdboot/init
@@ -1,4 +1,4 @@
-#!/bin/sh
+#!/bin/ash
 # Copyright (c) 2007 - OpenSLX GmbH
 #
 # This program is free software distributed under the GPL version 2.
@@ -9,8 +9,29 @@
 #
 # General information about OpenSLX can be found at http://openslx.org
 #
-# Main script for new type of initial ramdisk for OpenSLX linux stateless
-# clients version 4
+# Main script for cd-boot demo initial ramdisk - preloading environment for
+# for running OpenSLX linux stateless clients version 4 for testing
+
+#############################################################################
+# compute prefix bit number from netmask
+nm2pref () {
+set $(IFS="."; echo $1)
+local n=0
+local i
+  for i in $1 $2 $3 $4 ; do
+    case $i in
+        0) break ;;
+      128) n=$(($n + 1)) ; break ;;
+      192) n=$(($n + 2)) ; break ;;
+      224) n=$(($n + 3)) ; break ;;
+      240) n=$(($n + 4)) ; break ;;
+      252) n=$(($n + 6)) ; break ;;
+      254) n=$(($n + 7)) ; break ;;
+      255) n=$(($n + 8)) ; continue ;;
+    esac
+  done
+echo $n
+}
 
 #############################################################################
 # device files get their own filesystem (to be move mounted later)
@@ -42,8 +63,8 @@ mkdir -p ${devdir}/pts ${devdir}/shm ${devdir}/.udevdb ${devdir}/.udev
 export PATH=/bin:/sbin:/usr/bin/:/usr/sbin
 
 export DEBUGLEVEL=0
-export KERNEL="${slxconf_kernver}"
-export NWMODULES="${slxconf_listnwmod}"
+export KERNEL="${ramfs_kernver}"
+export NWMODULES="${ramfs_nicmods}"
 
 # set a default LAN interface, might be modified for WLAN or on machines with
 # more than one ethernet card built in
@@ -87,12 +108,11 @@ done
 # at this point a timer should be started to ensure an automated reboot
 # or halt of the machine if SLX init does not succeed (e.g. missing kernel
 # module for the network adaptor)
-if [ ${DEBUGLEVEL} -lt 3 -o ${DEBUGLEVEL} = 8 ] ; then
+if [ "${DEBUGLEVEL}" -gt 0 ] ; then
   cat<<EOF > /bin/watchdog
 #!/bin/ash
 echo \$$ > /tmp/watchdogpid
 [ ! -f /proc/version ] && mount -n -t proc proc /proc
-. /etc/functions
 sleep 120 2> /dev/null
 echo "o" > /proc/sysrq-trigger
 EOF
@@ -109,23 +129,33 @@ else
   ip link show dev eth1 >/dev/null 2>&1 && echo "more than one nw if found"
 fi
 
-# set up loopback networking
-[ $DEBUGLEVEL -eq 20 ] && echo "** starting ip config at $(sysup)"
+# set up loopback networking and power up ethernet
 ip link set dev lo up
 ip addr add 127.0.0.1/8 dev lo
 ip link set dev $nwif up || echo "noeth"
 
 # start udhcpc here
+mkdir -p /usr/share/udhcpc
+echo -e '#!/bin/ash\nunset infomsg HOME IFS mask lease interface DEBUGLEVEL\n 
+set >/tmp/ipstuff' >/usr/share/udhcpc/default.script
+chmod u+x /usr/share/udhcpc/default.script
 [ -f /lib/modules/@@@KERNVER@@@/kernel/net/packet/af_packet.ko ] && \
   modprobe -q af_packet
 [ -n $vci ] && vci="-V $vci"
-udhcpc -b -q $vci -i $nwif 2>/dev/null
+udhcpc -b -q $vci -s /usr/share/udhcpc/default.script -i $nwif #2>/dev/null
+. /tmp/ipstuff || echo "no ip config"
+ip addr add $ip/$(nm2pref $subnet) dev $nwif
+ip route add default via $router  
+
+# at this point a little selection script could be downloaded, which lets the
+# user choose what kind of SLX client he wants to get
 
-[ -z "$clientip" -o -z "$subnet_mask" -o -z "$gateway" \
-  -o -z "$broadcast_address" ] && error "$init_errdhcp"
-ip addr add $clientip/$(nm2pref $subnet_mask) broadcast $broadcast_address \
-  dev $nwif
-ip route add default via $gateway
+# get kernel and initramfs
+wget -c -O /tmp/kernel http://132.230.4.73/trac/kdefault
+wget -c -O /tmp/iramfs http://132.230.4.73/trac/idefault
+/bin/ash
 
 # start the new kernel with initialramfs and cmdline
-#kexec
+kexec -l /tmp/kernel --initrd=/tmp/iramfs --append="ip=$ip:$siaddr:$router:$subnet\
+  file=http://132.230.4.73/trac/default.tgz debug=3"
+kexec -e
-- 
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