From 2ebf1ebb87b6887ae1ee5121723af1c6b8edac71 Mon Sep 17 00:00:00 2001
From: pvizeli <pvizeli@syshack.ch>
Date: Fri, 24 Mar 2017 10:03:46 +0100
Subject: [PATCH] Downgrade protect

---
 meta-hassio/recipes-support/resinhup/resinhup/resinhup | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/meta-hassio/recipes-support/resinhup/resinhup/resinhup b/meta-hassio/recipes-support/resinhup/resinhup/resinhup
index e0b787dbb..b5cc843dd 100644
--- a/meta-hassio/recipes-support/resinhup/resinhup/resinhup
+++ b/meta-hassio/recipes-support/resinhup/resinhup/resinhup
@@ -228,6 +228,13 @@ if [ $HASSIO_VERSION == $HOSTOS_VERSION ]; then
     exit 0
 fi
 
+# protect downgrade
+downgrade=$(awk -vn1=$HASSIO_VERSION -vn2=$HOSTOS_VERSION 'BEGIN{print (n1<n2) ? 0:1}')
+if [ $downgrade == 1 ]; then
+    log ERROR "Downgrade are not supported"
+    exit 0
+fi
+
 # Detect DATA_MOUNTPOINT
 if [ -d /mnt/data ]; then
     DATA_MOUNTPOINT=/mnt/data