#!/bin/bash
#
# This is an example script that install and configure grub after installation.
# To use it put it in your CUSTOMIZE_DIR and make it executable.
#
# Do not include grub in EXTRA_PKGS of
# $sysconfdir/default/ganeti-instance-debootstrap because it will
# cause error of debootstrap.

set -e

. common.sh

CLEANUP=( )

trap cleanup EXIT

if [ -z "$TARGET" -o ! -d "$TARGET" ]; then
  echo "Missing target directory"
  exit 1
fi

# install grub
export LANG=C
if [ "$PROXY" ]; then
  export http_proxy="$PROXY"
  export https_proxy="$PROXY"
fi
export DEBIAN_FRONTEND=noninteractive
chroot "$TARGET" apt-get -y --force-yes install grub grub-common

# make /dev/sda
mknod $TARGET/dev/sda b $(stat -L -c "0x%t 0x%T" $BLOCKDEV)
CLEANUP+=("rm -f $TARGET/dev/sda")

# make /dev/sda1
mknod $TARGET/dev/sda1 b $(stat -L -c "0x%t 0x%T" $FSYSDEV)
CLEANUP+=("rm -f $TARGET/dev/sda1")

# create grub directory
mkdir -p "$TARGET/boot/grub"

# create device.map
cat > "$TARGET/boot/grub/device.map" <<EOF
(hd0) /dev/sda
EOF

# execute update-grub
chroot "$TARGET" update-grub

# install grub to the block device
grub-install --no-floppy --root-directory="$TARGET" "$BLOCKDEV"

# execute cleanups
cleanup
trap - EXIT

exit 0
