source: trunk/debathena/third/schroot/etc/setup.d/05union @ 24167

#!/bin/sh
# Copyright © 2008-2009  Jan-Marek Glogowski <glogow@fbihome.de>
#
# schroot 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 3 of the License, or
# (at your option) any later version.
#
# schroot 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, see
# <http://www.gnu.org/licenses/>.
#
#####################################################################

set -e

if [ -f "$CHROOT_SCRIPT_CONFIG" ]; then
    . "$CHROOT_SCRIPT_CONFIG"
fi

if [ -n "${CHROOT_UNION_TYPE}" ] && [ "${CHROOT_UNION_TYPE}" != 'none' ]; then

    if [ $1 = "setup-start" ]; then
        mkdir "${CHROOT_UNION_OVERLAY_DIRECTORY}"
        if [ ! -d "$CHROOT_UNION_OVERLAY_DIRECTORY" ]; then
            echo "$CHROOT_UNION_OVERLAY_DIRECTORY does not exist, and could not be created"
            exit 1
        fi

        mkdir "${CHROOT_UNION_UNDERLAY_DIRECTORY}"
        if [ ! -d "$CHROOT_UNION_UNDERLAY_DIRECTORY" ]; then
            echo "$CHROOT_UNION_UNDERLAY_DIRECTORY does not exist, and could not be created"
            exit 1
        fi

    elif [ $1 = "setup-recover" ]; then
        if [ ! -d "${CHROOT_UNION_OVERLAY_DIRECTORY}" ]; then
            echo "Missing overlay directory for session: can't recover"
            exit 1
        fi
        if [ ! -d "${CHROOT_UNION_UNDERLAY_DIRECTORY}" ]; then
            echo "Missing underlay directory for session: can't recover"
            exit 1
        fi

    elif [ $1 = "setup-stop" ]; then
        if [ "$CHROOT_SESSION_PURGE" = "true" ]; then
            if [ "$AUTH_VERBOSITY" = "verbose" ]; then
                echo "Purging $CHROOT_UNION_OVERLAY_DIRECTORY"
            fi
            if [ -d "${CHROOT_UNION_OVERLAY_DIRECTORY}" ]; then
                rm -rf "${CHROOT_UNION_OVERLAY_DIRECTORY}"
            fi

            # For safety, use rmdir rather than rm -rf in case
            # umount failed.
            if [ "$AUTH_VERBOSITY" = "verbose" ]; then
                echo "Removing $CHROOT_UNION_UNDERLAY_DIRECTORY"
            fi
            if [ -d "${CHROOT_UNION_UNDERLAY_DIRECTORY}" ]; then
                rmdir "${CHROOT_UNION_UNDERLAY_DIRECTORY}"
            fi
        fi
    fi

fi