#!/bin/bash -
# supernested Makefile.am
# @configure_input@
# (C) Copyright 2014 Red Hat Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
# Written by Richard W.M. Jones <rjones@redhat.com>

echo "*** /init script starting up ***"

export PATH=/sbin:/usr/sbin:/bin:/usr/bin

# Create /proc, /sys, /run, /dev, /tmp, /var/tmp
if [ ! -d /proc ]; then rm -f /proc; fi
mkdir -p /proc
mount -t proc /proc /proc
if [ ! -d /sys ]; then rm -f /sys; fi
mkdir -p /sys
mount -t sysfs /sys /sys
mkdir -p /run
mount -t tmpfs -o "nosuid,size=20%,mode=0755" tmpfs /run
mkdir -p /run/lock
ln -s ../run/lock /var/lock
mount -t devtmpfs /dev /dev
mkdir -p /tmp
mount -t tmpfs tmpfs /tmp
mkdir -p /var/tmp
mount -t tmpfs tmpfs /var/tmp

# Find and start udev.
for f in /sbin/udevd /lib/udev/udevd \
    /lib/systemd/systemd-udevd /usr/lib/systemd/systemd-udevd \
    /usr/lib/udev/udevd; do
  if [ -x "$f" ]; then UDEVD="$f"; fi
done
if [ -z "$UDEVD" ]; then
  echo "udev not found!  Things will probably not work ..."
fi
$UDEVD --daemon
udevadm trigger
udevadm settle --timeout=600

# Set up kmod static-nodes (RHBZ#1011907).
mkdir -p /run/tmpfiles.d
kmod static-nodes --format=tmpfiles --output=/run/tmpfiles.d/kmod.conf

# Set up tmpfiles (must run after kmod.conf is created above).
systemd-tmpfiles --prefix=/dev --create

# libiscsi puts itself in a non-standard directory.
/sbin/ldconfig

# Print some information about the system.
echo "/proc/cpuinfo ------------------------------"
cat /proc/cpuinfo
echo "--------------------------------------------"
echo

echo -n "cmdline: "
cat /proc/cmdline

echo -n "clocksource: "
cat /sys/devices/system/clocksource/clocksource0/current_clocksource

echo -n "kernel: "
uname -r

# ls -lR /dev
# cat /proc/mounts
# lsmod

level="$(
    grep -Eo 'supernested.level=[[:digit:]]+' /proc/cmdline |
    grep -Eo '[[:digit:]]+'
    )"
echo "*** This is the L$level hypervisor ***"

# Run the nested guest.
/run-supernested.sh --nested

echo "*** the L$level hypervisor is exiting ***"

# Exit and reboot.
# qemu has the -no-reboot flag, so issuing a reboot here actually
# causes qemu to exit gracefully.
reboot -f