#!/bin/sh
set -e

# Copyright 2012 Holger Levsen (holger@layer-acht.org)
# Copyright © 2012-2013 Andreas Beckmann (anbe@debian.org)
#
# 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, see <https://www.gnu.org/licenses/>

#
# cleanup old chroots etc. in $PIUPARTS_TMPDIR
#
# - this should only be run (automatically) on boot
#


. @sharedir@/piuparts/lib/read_config.sh

get_config_value PIUPARTS_TMPDIR global tmpdir


# do nothing if piuparts-slave is running
if pgrep -f share/piuparts/piuparts-slave >/dev/null ; then
	exit 0
fi

# umount all mount points (should be none on boot, but this script can also be called at other times)
for MOUNTPOINT in $(tac /proc/mounts | cut -d " " -f 2 | grep "$PIUPARTS_TMPDIR/")
do
	sudo umount "$MOUNTPOINT"
done

# cleanup tmp
mkdir -p "$PIUPARTS_TMPDIR"
for dir in $(ls -d1 "$PIUPARTS_TMPDIR"/*/ 2>/dev/null || true)
do
	if sudo test -f "$dir/.piuparts.tmpdir"; then
		sudo rm -rf --one-file-system "$dir"
		test ! -d "$dir" || sudo touch "$dir/.piuparts.tmpdir"
	fi
done