diff options
Diffstat (limited to 'src/boot-env/pbs/uclib-rootfs/init')
| -rwxr-xr-x | src/boot-env/pbs/uclib-rootfs/init | 234 |
1 files changed, 234 insertions, 0 deletions
diff --git a/src/boot-env/pbs/uclib-rootfs/init b/src/boot-env/pbs/uclib-rootfs/init new file mode 100755 index 00000000..847cad87 --- /dev/null +++ b/src/boot-env/pbs/uclib-rootfs/init @@ -0,0 +1,234 @@ +#!/bin/ash +# Copyright (c) 2008..2009 - 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 +# +# Main script for preboot initial ramfs - preloading environment for running +# OpenSLX linux stateless clients version 5. + +fetchip () { +# we expect to get an ip address within 10++ seconds +( sleep 6 ; killall udhcpc >/dev/null 2>&1 ) & +for i in 1 2 ; do + udhcpc -f -n -q $vci -s /usr/share/udhcpc/default.script -i $nwif 2>/dev/null + if grep "ip=" /tmp/ipstuff >/dev/null 2>&1 ; then + . /tmp/ipstuff + for ns in $dns ; do + echo "nameserver $ns" >>/etc/resolv.conf + done + # simply add a single dns server for passing via kernel cmdline to stage3 + # (quickhack, just the last, list of dns might be better ...) + echo "dnssrv=$ns" >>/tmp/ipstuff + return + else + if [ $i -eq 1 ] ; then + sleep 1 + else + dialog --msgbox "Did not get any proper IP configuration: Please check \ +that your Ethernet card is supported, the machine is connected to the network \ +and a DHCP server is answering your requests." 7 65 + ash + echo "o" >/proc/sysrq-trigger + fi + fi +done +} + +############################################################################# +# PreBoot init main part + +# device files get their own filesystem +devdir="/dev" +mount -n -t tmpfs -o 'size=25%,mode=0755' mdev ${devdir} +mkdir -p /dev/pts +mount -t devpts devpts /dev/pts +echo /sbin/mdev > /proc/sys/kernel/hotplug +cat > /etc/mdev.conf << "EOF" +sda* 0:6 0660 +sdb* 0:6 0660 +sg* 0:6 0660 +hda* 0:6 0660 +hdb* 0:6 0660 +EOF + +mdev -s + +export DEBUGLEVEL=0 + +# create basic device files an directories in dev +for i in "/dev/mem c 1 1" "/dev/null c 1 3" "/dev/zero c 1 5" \ + "/dev/urandom c 1 9" "/dev/kmsg c 1 11" "/dev/tty0 c 4 0" \ + "/dev/tty1 c 4 1" "/dev/tty2 c 4 2" "/dev/tty3 c 4 3" \ + "/dev/tty4 c 4 4" "/dev/tty5 c 4 5" "/dev/tty6 c 4 6" \ + "/dev/tty7 c 4 7" "/dev/tty8 c 4 8" "/dev/tty9 c 4 9" \ + "/dev/tty10 c 4 10" "/dev/tty c 5 0" "/dev/console c 5 1" \ + "/dev/ptmx c 5 2" "/dev/psaux c 10 1" "/dev/agpgart c 10 175" \ + "/dev/fb0 c 29 0" "/dev/bootsplash p" "/dev/xconsole p"; do + mknod $i +done +mkdir -p ${devdir}/pts ${devdir}/shm +export PATH=/bin:/sbin:/usr/bin/:/usr/sbin + +# redirect kernel messages to tty10 instead of tty1 +getty -i -n -l /bin/cat 38400 tty10 & +setlogcons 10 + +# initramfs-setup configuration (common settings for all clients using a +# certain InitRamFS generated by slxmkramfs/mkdxsinitrd) +[ -f /etc/initramfs-setup ] && . /etc/initramfs-setup 2>/dev/null + +# set a default LAN interface, has to be modified for WLAN or on machines +# with more than one ethernet card built in +nwif="eth0" + +# mount the important standard directories +[ ! -f /proc/cpuinfo ] && mount -n -t proc proc /proc +[ ! -d /sys/class ] && mount -n -t sysfs sysfs /sys + +# load framebuffer modules if needed +for mod in vesafb fbcon; do + if [ x != x$(find /lib/modules -name ${mod}.ko) ]; then + modprobe $mod || \ + dialog --infobox "Module $mod did not load for some reason." 3 65 + usleep 1000 + fi +done + +# give startup information +dialog --infobox "Starting OpenSLX preboot environment ..." 3 65 + +# load usb keyboard and network adaptor modules +for mod in ${ramfs_nicmods} af_packet unix hid hid-bright usbhid \ + uhci-hcd ohci-hcd ; do + if [ x != x$(find /lib/modules -name ${mod}.ko) ]; then + modprobe $mod || \ + dialog --infobox "Module $mod did not load for some reason." 3 65 + usleep 10000 + fi +done + +# set the default for boot type and read kernel commandline (for this and +# other options) +export TYPE=fastboot +read KCMDLINE </proc/cmdline +# read the system wide machine-setup and then the kernel commandline +for opts in ${KCMDLINE} ; do + case ${opts} in + debug) + DEBUGLEVEL=1;; + # ... or a specified debug level (will be passed to next stage) + debug=*) + DEBUGLEVEL=${opts#debug=};; + # WLAN ssid (most probably passed that way, unused yet ...) + ssid=*) + SSID=${opts#SSID=};; + # Boot type (fastboot)/directkiosk/cfgkiosk/slxconfig + type=*) + TYPE=${opts#type=};; + pbsId=*) + PBS_ID=${opts#pbsId=};; + esac +done + +# start a watchdog to ensure an automated reboot or halt of the machine if the +# preboot init does not succeed (e.g. missing kernel module/firmware for the +# network adaptor) +if [ "${DEBUGLEVEL}" -eq 0 ] ; then + cat<<EOF >/bin/watchdog +#!/bin/ash +echo \$$ > /tmp/watchdogpid +[ ! -f /proc/version ] && mount -n -t proc proc /proc +sleep 120 2>/dev/null +echo "o" >/proc/sysrq-trigger +EOF + chmod u+x /bin/watchdog + watchdog & +else + getty -i -n -l /bin/ash 38400 tty2 & +fi + +if [ -n "${SSID}" ] ; then + # WLAN setup will most probably change the network interface name stored in + # nwif (to wlan0 or something like that) + [ $DEBUGLEVEL -gt 0 ] && echo "set essid to ${essid}"; + #value of essid unchecked yet + # load network adaptor modules + cd /lib/modules/$(ls /lib/modules/)/kernel/drivers/net/wireless + for mod in $(find . | grep .ko | sed 's,.*/\([^/]*\).ko,\1',); do + echo "Mod:"; + echo $mod; + modprobe $mod || echo "module $mod did not load for some reason" + usleep 10000 + done + cd / + wlanif=$(iwconfig 2>/dev/null|sed -n "/ESSID:/p"|sed "s/ .*//") + [ $DEBUGLEVEL -gt 0 ] && echo "wlancard recognized as ${wlanif}"; + ip link set dev ${wlanif} up + if iwconfig ${wlanif} mode managed essid "${essid}"; then + nwif=${wlanif} + else + error " Unable to configure the WLAN interface." + fi + : +else + # check here for the active Ethernet link + ip link show dev eth1 >/dev/null 2>&1 && \ + dialog --msgbox "More than one network interface found. This could cause \ +some trouble as their activation and ordering depends on the module load \ +order ..." 7 65 +fi + +# 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 "I did not find any usable network adaptor." + +# run udhcpc and start a debug shell if no lease could be obtained +mkdir -p /usr/share/udhcpc +echo -e "#!/bin/ash\nunset infomsg HOME IFS mask lease interface DEBUGLEVEL \ +BOOT_IMAGE\nset >/tmp/ipstuff" >/usr/share/udhcpc/default.script +chmod u+x /usr/share/udhcpc/default.script +modprobe -q af_packet +[ -n $vci ] && vci="-V $vci" +fetchip +ip addr add $ip/$(ipcalc -s -p $ip $subnet|sed s/.*=//) dev $nwif +ip route add default via $router + +# get the mac address of the boot network adaptor +macaddr=$(ip link show dev $nwif 2>/dev/null | \ + sed -n "/ether [0-9e-f]\{2\}:.*/p" | sed -e "s/.*ether //;s/ .*//") +echo "macaddr=$macaddr" >>/etc/initramfs-setup + +# at this point a little selection script could be downloaded, which lets the +# user choose what kind of SLX client he wants to get +dialog --infobox "Fetching preboot interactive part and configuration from \ +the net ($boot_uri) ..." 4 65 +mkdir -p /preboot +wget -q -O /preboot/preboot.init ${boot_uri}bootloader/env/getinit/formedia/$PBS_ID +chmod u+x /preboot/preboot.init + +echo "pbs_id=$PBS_ID" >> /etc/pbs.conf + +# start a debug shell if needed, else set quiet kernel parameter +if [ "${DEBUGLEVEL}" -gt 0 ] ; then + echo "Starting shell, leaving it would continue init." + /bin/ash +else + # no debugging output for stage3 run + echo "quiet=quiet" >>/etc/initramfs-setup +fi +# run the preboot interactive part which finally will execute kexec +cd /preboot +exec ./preboot.init +# we should never return from that one ... +dialog --msgbox "The execution of the main preboot component failed. Please \ +check network access of your box. Is $boot_uri reachable!?" 6 65 +# ping -c 1 $boot_uri +sleep 20 && echo "o" >/proc/sysrq-trigger + |