#!/bin/sh -e

# This script can be called in the following ways:
#
# Before the package is installed:
#       <new-preinst> install
#
# Before removed package is upgraded:
#       <new-preinst> install <old-version>
#
# Before the package is upgraded:
#       <new-preinst> upgrade <old-version>
#
#
# If postrm fails during upgrade or fails on failed upgrade:
#       <old-preinst> abort-upgrade <new-version>

set -e

case "$1" in
    install)
        ;;

    upgrade)
        # 2.3.0 is not compatible with 2.2.x. Thus we need to create a new db.
		# Otherwise, the kernel will panic on boot
        if dpkg --compare-versions "$2" lt 2.3.0-20100820-1; then
				if [ -d /etc/tomoyo ]; then
						mv -f /etc/tomoyo /etc/tomoyo.old.$2;
				fi
        fi
		;;

    abort-upgrade)
        ;;


    *)
        echo "$0 called with unknown argument \`$1'" 1>&2
        exit 1
        ;;
esac

#DEBHELPER#

exit 0

