#!/bin/sh
slot=$1

#Audit slot and release names
case $slot in
	*[^a-zA-Z0-9]* ) echo "Non-alphanumeric slot $slot"; exit 1
esac
if [ -z "$slot" ]; then
	echo "Zero-length slot or release"
	exit 1
fi

if [ ! -d /scratch/$slot ]; then
	echo "No file system for slot!"
	exit 1
fi

set +e
set -o noclobber
echo > /scratch/$slot.lock
jail -f /scratch/$slot.conf -r $slot
umount -f /scratch/$slot || true
rm -rf /scratch/$slot /scratch/$slot.conf /scratch/$slot.fstab
set +e
rm /scratch/$slot.lock