SVN: geninitrd/trunk/mod-luks.sh

[jajcus]

Author: jajcus
Date: Mon Dec  5 19:20:26 2011
New Revision: 12439

Modified:
   geninitrd/trunk/mod-luks.sh
Log:
- magic to get the LUKS lower level device name when initialized with old cryptsetup


Modified: geninitrd/trunk/mod-luks.sh
==============================================================================
--- geninitrd/trunk/mod-luks.sh	(original)
+++ geninitrd/trunk/mod-luks.sh	Mon Dec  5 19:20:26 2011
@@ -77,6 +77,15 @@
 	local name=${devpath#/dev/mapper/}
 	LUKSDEV=$(/sbin/cryptsetup status $name 2>/dev/null | awk '/device:/{print $2}')
 	if [ -z "$LUKSDEV" ]; then
+		# could be initialized by old cryptsetup, we need some magic
+		vars=$(dmsetup deps lolek_crypt | awk '/dependencies.*(.*)/ { left=index($0, "("); right=index($0, ")"); split(substr($0, left + 1, right - left - 1), A, " *, *") ; print "major=" A[1] "; minor=" A[2] }')
+		eval "$vars"
+		if [ -n "$major" -a -n "$minor" ] ; then
+			LUKSDEV=$(awk "\$1 == $major && \$2 == $minor { print \"/dev/\" \$4 }" /proc/partitions)
+		fi
+
+	fi
+	if [ -z "$LUKSDEV" ]; then
 		die "Lost cryptsetup device meanwhile?"
 	fi