From 9bb7ace03caf56f770bc85e16dc4247ae428c84b Mon Sep 17 00:00:00 2001
From: Gregory Haynes <greg@greghaynes.net>
Date: Fri, 21 Nov 2014 10:30:21 -0800
Subject: [PATCH] Fail helpfully if no elements are specified

Instead of charging ahead and failing because we lack dib-run-parts we
can fail in this case with a useful error message.

Change-Id: Ie10176b5a7019a0385796984ebbaf7742876925a
---
 bin/disk-image-create | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/bin/disk-image-create b/bin/disk-image-create
index f1ea8eb47..11d48e21b 100755
--- a/bin/disk-image-create
+++ b/bin/disk-image-create
@@ -142,6 +142,11 @@ if [ "$IS_RAMDISK" == "1" ]; then
   source $_LIB/ramdisk-functions
 fi
 
+# If no elements are specified theres no way we can succeed
+if [ -z "$@" ]; then
+    echo "ERROR: At least one distribution root element must be specified"
+    exit 1
+fi
 arg_to_elements "$@"
 
 if [ "${#IMAGE_TYPES[@]}" = "1" ]; then