codekasten/spielspass/dmcrypt-wrapper.sh

#!/bin/sh
#
# a simple wrapper around cryptdisks to:
#  mount after cryptsetup
#  umount before cryptsetup

# break on error or undefined variables
set -eu


crypt_mount()
{
	local partitions=`dmsetup ls | grep -v "No devices found" | cut -f1`
	for i in $partitions; do
		if mount | grep -q "^/dev/mapper/$i$"; then	
		#if [ `mount | grep -c /dev/mapper/$i` -lt 1 ]; then
			echo -en "\t$i(mounting)"
			mount "/dev/mapper/$i" &>/dev/null || echo -en "(failed)" >&2
		else echo -en "\t$i(already mounted)"
		fi
		echo ""
	done
}


crypt_umount()
{
	local partitions=`dmsetup ls | grep -v "No devices found" | cut -f1`
	for i in $partitions; do
		if mount | grep -q "^/dev/mapper/$i$"; then	
		#if [ `mount | grep -c /dev/mapper/$i` -gt 0 ]; then
			echo -en "\t$i (unmounting)"
			umount "/dev/mapper/$i" &>/dev/null || echo -en "(failed!)" >&2
		else echo -en "\t$i(not mounted)"
		fi
		echo ""
	done
}

show_active_mappings()
{
	mappings=`dmsetup ls | cut -f1`
	if [ "X$mappings" != "X" ]; then
		echo "there are still some active mappings:"
		echo "$mappings"
	fi
}


########### do it! ##############

ACTION=help
[ $# -gt 0 ] && ACTION="$1"

case "$ACTION" in
	start|retry )
		/etc/init.d/cryptdisks start
		crypt_mount
		;;
	stop )
		crypt_umount
		/etc/init.d/cryptdisks stop
		show_active_mappings
		;;
	restart|reload|force-reload )
		$0 stop
		$0 start
		;;
	* )
		echo "Syntax: `basename $0` { start | stop | restart | retry | reload | force-reload | help }"
		;;
  esac