/usr/share/piuparts/slave/slave_cleanup is in piuparts-slave 0.56ubuntu1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 | #!/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, write to the Free Software Foundation, Inc.,
# 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
# cleanup old chroots etc. in $PIUPARTS_TMPDIR
#
# - this should only be run (automatically) on boot
#
. /usr/share/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
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