#!/bin/bash

PROFILE="ram"

cd "${HOME}/.mozilla/firefox"

grep firefox /etc/mtab &> /dev/null || mount "${HOME}/.mozilla/firefox/${PROFILE}" || exit 1

if [ -f "${PROFILE}/.unpacked" ]
then
	# Check for a firefox instance; the point of tmpfs is
	# limiting writes, and a backup every 10 mins...
	# Does that really contain writes?
	pgrep firefox &> /dev/null || exit 1
	tar --exclude ".unpacked" -cpf ram.tmp.tar "$PROFILE"
	mv ram.tar{,.old}
	mv ram.{tmp.,}tar
else
	tar xpf ram.tar || exit 1
	touch "${PROFILE}/.unpacked"
fi