#!/bin/sh
#
#    tmpfsffs - setup /tmp on tmpfs, for faster seeks
#    Copyright (C) 2016 Dustin Kirkland
#
#    Authors: Dustin Kirkland <kirkland@ubuntu.com>
#
#    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, version 3 of the License.
#
#    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 <http://www.gnu.org/licenses/>.


set -e

if grep -qs "^tmpfs[[:space:]]/tmp[[:space:]]tmpfs" /etc/fstab; then
	echo "SUCCESS: /tmp is already a tmpfs"
else
	echo "tmpfs /tmp tmpfs rw,nosuid,nodev,noexec" >> /etc/fstab
	dir=$(mktemp -d "/dev/shm/tmp.XXXXXXXXXXXX")
	mv /tmp/* /tmp/.* "$dir/"
	mount -a
	mv "$dir/"* "$dir/."* /tmp/
fi