#!/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>

unset CDPATH
set -e

supermin="@SUPERMIN@"
distro="@DISTRO@"
guestfish="@GUESTFISH@"

output="$1"
if [ -z "$output" ]; then
    echo "$0: do not run this script directly, use 'make'"
    exit 1
fi

# Get the list of package names.  This is distro-specific.
if [[ "$distro" =~ ^fedora- ]]; then
    packages="
        bash
        coreutils
        grep
        qemu
        qemu-kvm-rhev
        systemd-udev
        util-linux
    "
elif [[ "$distro" =~ ^debian- ]]; then
    packages="
        bash
        coreutils
        grep
        qemu-system-x86
        sgabios
        sysvinit-core
        util-linux
    "
else
    echo "$0: $distro not known.  You need to edit this script to add support for this distro."
    exit 1
fi

# Run the prepare step.
echo "Preparing the supermin appliance containing:" $packages
"$supermin" --prepare $packages -o tmp-supermin.d

# Add the init & run-supernested.sh scripts.
tar cf tmp-supermin.d/init.tar init run-supernested.sh

# Add the excludefiles.
cp excludefiles tmp-supermin.d/

# Run the build step.
echo "Building the full appliance ..."
"$supermin" --build --format ext2 tmp-supermin.d -o tmp-appliance.d

# Add the kernel and initrd to the image.
# We have to do this here, AFTER the build step, because we don't
# have the kernel & initrd before this.
"$guestfish" --format=raw -a tmp-appliance.d/root -m /dev/sda <<'EOF'
  echo "Adding kernel and initrd to the disk image ..."
  upload tmp-appliance.d/kernel /kernel
  upload tmp-appliance.d/initrd /initrd

  echo "Adjusting configuration files in the image ..."
  mkdir-p /etc/modprobe.d
  write /etc/modprobe.d/kvm.conf "options kvm_intel nested=1"
EOF

# Copy out the kernel, initrd and disk image.
mv tmp-appliance.d/kernel .
mv tmp-appliance.d/initrd .
qemu-img convert -f raw tmp-appliance.d/root -O qcow2 -c "$output"

#rm -rf tmp-supermin.d tmp-appliance.d