#! /bin/sh

set -e

. /usr/share/debconf/confmodule

case "$1" in
    remove)
	if grep -q '^dm_mod\s' /proc/modules; then
		cryptmap="$(dmsetup table --target crypt | sed -n 's/:.*//p' | tr '\n' ' ')"
		if [ -n "$cryptmap" ]; then
				db_fset cryptsetup/prerm_active_mappings seen false
				db_subst cryptsetup/prerm_active_mappings cryptmap "$cryptmap"
				db_input high cryptsetup/prerm_active_mappings || true
				db_go || true
				db_get cryptsetup/prerm_active_mappings
				if [ "$RET" = "false" ]; then
					exit 1
				fi
		fi
	fi
    ;;
esac