ein dmcrypt-wrapper

spielspass/dmcrypt-wrapper.sh

@@ -0,0 +1,59 @@
+#!/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$"
+	    	then	echo -en "\t$i (mounting)"
+			mount "/dev/mapper/$i" &>/dev/null || echo -en " (\"mount /dev/mapper/$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$"
+	    	then	true
+		else
+			echo -en "\t$i (unmounting)"
+			umount "/dev/mapper/$i" &>/dev/null || echo -en " (\"umount /dev/mapper/$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
+