#!/bin/sh
slot=$1
release=$2

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

if [ -d /scratch/$slot ]; then
	echo "Pre-existing file system for this slot!"
	/pkgscripts/reapbuildjail $slot
	sleep 5
fi

cleanup() {
	rm -f /scratch/$slot.lock
	/pkgscripts/reapbuildjail $slot
	exit 1
}

set -e
trap cleanup EXIT

#TODO: localhost networking

mkdir -p /scratch/$slot
mkdir -p /scratch/tmp/$slot
unionfs -o cow -o noatime -o nosuid -o max_files=32000 /scratch/tmp/$slot=RW:/scratch/ports=RO:/scratch/$release=RO /scratch/$slot

jail -c name=$slot path=/scratch/$slot host.hostname=$slot.`hostname` persist=true mount.devfs=true
trap true EXIT