shell scripts to help rewrite Qubes initrd /etc/crypttab (issue #29)

initrd/bin/generate-crypttab

@@ -0,0 +1,11 @@
+#!/bin/sh
+# Generate a crypttab file for all the devices that are
+# present on the system.  This is a total hack since the
+# rd.luks.key=/secret.key should be sufficient.
+
+keyfile=/secret.key
+
+for dev in /dev/sd*; do
+	uuid=`cryptsetup luksUUID "$dev" 2>/dev/null` || continue
+	echo "luks-$uuid /dev/disk/by-uuid/$uuid $keyfile luks"
+done

initrd/bin/wrap-cpio

@@ -0,0 +1,21 @@
+#!/bin/sh
+# Add additional files to the initrd cpio so that we can pass
+# new keys to the Qubes startup routines.
+# Usage:
+#  wrap-cpio /boot/initrd.blah /tmp/root/ > /tmp/new.cpio
+
+die() { echo >&2 "$@"; exit 1; }
+warn() { echo >&2 "$@"; }
+
+cpio_file="$1"
+if [ -z "$cpio_file" ]; then
+	die "Initial cpio must be specified"
+fi
+
+new_dir="$2"
+if [ -z "$new_dir" ]; then
+	die "Additional directory must be specified"
+fi
+
+( cd "$new_dir" ; find . | cpio -H newc -ov )
+cat "$cpio_file"