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	true
		else	echo -e "\t$i (mounting)"
			mount "/dev/mapper/$i" &>/dev/null || echo -e " (\"mount /dev/mapper/$i\" failed)" >&2
	      fi
	  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	echo -e "\t$i (unmounting)"
			umount "/dev/mapper/$i" &>/dev/null || echo -e " (\"umount /dev/mapper/$i\" failed)" >&2
	      fi
	  done
}


########### 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
		;;
	restart|reload|force-reload )
		$0 stop
		$0 start
		;;
	* )
		echo "Syntax: `basename $0` { start | stop | restart | retry | reload | force-reload | help }"
		;;
  esac