freebsd-dev/etc/rc.d/encswap

#!/bin/sh
#
# $FreeBSD$
#

# PROVIDE: disks
# REQUIRE: initrandom
# KEYWORD: nojail

. /etc/rc.subr

name="encswap"
start_cmd="encswap_attach"
stop_cmd="encswap_detach"

encswap_attach()
{
	while read device mountpoint type options rest ; do
		case ":${device}:${type}:${options}" in
		:#*)
			continue
			;;
		*.bde:swap:sw)
			passphrase=`dd if=/dev/random count=1 2>/dev/null | md5 -q`
			device="${device%.bde}"
			gbde init "${device}" -P "${passphrase}" || return 1
			gbde attach "${device}" -p "${passphrase}" || return 1
			;;
		*.eli:swap:sw)
			device="${device%.eli}"
			geli onetime ${geli_swap_flags} "${device}" || return 1
			;;
		esac
	done < /etc/fstab
}

encswap_detach()
{
	while read device mountpoint type options rest ; do
		case ":${device}:${type}:${options}" in
		:#*)
			continue
			;;
		*.bde:swap:sw)
			device="${device%.bde}"
			gbde detach "${device}"
			;;
		*.eli:swap:sw)
			# Nothing here, because geli swap devices should be
			# created with the auto-detach-on-last-close option.
			;;
		esac
	done < /etc/fstab
}

load_rc_config $name
run_rc_command "$1"