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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
#############################################################################
# debug shell
drop_shell() {
[ $# -gt 0 ] && echo $@
echo "CTRL + D will continue booting."
setsid sh -c 'exec sh </dev/tty1 >/dev/tty1 2>&1'
}
# set PATH correctly
export PATH=/bin:/sbin:/usr/bin:/usr/sbin
export LD_LIBRARY_PATH=/usr/lib64
# mount the important standard directories
mount -n -t tmpfs -o 'mode=755' run "/run"
[ ! -f /proc/cpuinfo ] && mount -n -t proc proc /proc
[ ! -d /sys/class ] && mount -n -t sysfs sysfs /sys
# let kernel know that mdev is to be used for hotplug
echo "/sbin/mdev" > /proc/sys/kernel/hotplug
# read graphic and network adaptor configuration (without proprietary drivers yet)
# TODO: must ugly hack ever... needs to be improved when we add prop drivers
for DRM in /lib/modules/*/kernel/drivers/gpu/drm/*.ko /lib/modules/*/kernel/drivers/gpu/drm/*/*.ko; do
DRM="$(basename "$DRM")"
DRM="${DRM%.ko}"
echo "Trying to load module $DRM"
modprobe "$DRM"
done
# discover devices
mdev -s &
# read kernel command line for debugging switch
DEBUG=0
read KCL < /proc/cmdline
export KCL
for opts in ${KCL}; do
case ${opts} in
debug=*)
DEBUG=${opts#debug=} ;;
splash*)
SPLASH=1 ;;
ip=*)
# process IP info
export IPINFO=${opts#ip=} ;;
nfs=*)
export NFS=${opts#nfs=}
export NFSPATH=${nfs#*:}
export NFSSERVER=${nfs%:/*}
;;
BOOTIF=*)
export MAC="$( echo "$opts" | cut -b 11- | tr '-' ':' )" ;;
esac
done
# suppress kernel output if DEBUG is not set
[ "$DEBUG" -ge 1 ] && echo "0" >/proc/sys/kernel/printk || echo "4 4 1 7" >/proc/sys/kernel/printk
# start plymouth if activated
if [ "x$SPLASH" == "x1" -a "x$DEBUG" != "x1" ]; then
echo "Starting plymouth..."
plymouthd && plymouth show-splash
fi
# preparations for mounting stage3.2
mkdir -p /dev/shm/union /dev/shm/uniontmp /rorootfs
mount -n -t tmpfs none /dev/shm/uniontmp
[ $DEBUG -ge 4 ] && drop_shell "Requested Debug Shell (before network)."
echo "Setup networking..." # Source script so the variables are still available to us
. "/bin/setup_network" || echo "Error setting up network"
# mount rootfs
if [ -n "$NFS" ]; then
# mount stage32 per NFS if activated
echo "Mounting stage 3.2 as NFS..."
mount -t nfs -o ro,async,nolock ${NFSSERVER}:${NFSPATH} /rorootfs || drop_shell "Problem mounting NFS-Directory from ${NFSSERVER}:${NFSPATH}."
else
# or per squashfs else
echo "Mounting stage 3.2 as SquashFS..."
mount -t squashfs /mnt/*.sqfs /rorootfs || drop_shell "Problem mounting Squashfs."
fi
[ $DEBUG -ge 3 ] && drop_shell "Requested Debug Shell: squashfs/nfs mounted, before aufs."
echo "Building aufs..."
mv /mnt/modprobing /dev/shm/uniontmp
#mount -t overlayfs -o lowerdir=/rorootfs,upperdir=/dev/shm/uniontmp overlayfs /mnt
mount -n -t aufs -o br:/dev/shm/uniontmp:/rorootfs=ro none /mnt || drop_shell "Problem building aufs."
mkdir -p /mnt/uniontmp /mnt/tmp
mount -n --move /dev/shm/uniontmp /mnt/uniontmp || drop_shell "Problem moving uniontmp."
[ $DEBUG -ge 2 ] && drop_shell "Requested Debug Shell: after aufs'ing."
# Download config if available
/mnt/opt/openslx/bin/activate-sysconfig /mnt
# create udev rule for nic we booted from
cat > "/mnt/etc/udev/rules.d/70-net-boot-nic-name.rules" <<HEREEND
SUBSYSTEM=="net", ACTION=="add", DRIVERS=="?*", ATTR{address}=="$MAC", ATTR{dev_id}=="0x0", ATTR{type}=="1", KERNEL=="eth*", NAME="br0"
HEREEND
# create ip config
cat >> /mnt/opt/openslx/config <<HEREEND
# IP Config written in stage31
SLX_PXE_CLIENT_IP='$CLIENTIP'
SLX_PXE_SERVER_IP='$SERVERIP'
SLX_PXE_GATEWAY='$GATEWAY'
SLX_PXE_DNS='$DNS_SERVER'
SLX_PXE_MAC='$BRIDGEMAC'
HEREEND
[ $DEBUG -ge 1 ] && drop_shell "Requested Debug Shell: before switch_root."
for mnt in proc sys run ; do
umount -n "$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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