Update 20-folders.sh

jellyfin/rootfs/etc/cont-init.d/20-folders.sh

@@ -3,6 +3,21 @@
 
 LOCATION=$(bashio::config 'data_location')
 
+# Check if config is located in an acceptable location 
+LOCATIONOK=""
+for location in "/share" "/config" "/data" "/mnt"; do
+    if [[ "$LOCATION" == "$location"* ]]; then 
+        LOCATIONOK=true
+    fi
+done
+
+if [ -z "$LOCATIONOK" ]; then
+    LOCATION=/config/addons_config/${HOSTNAME#*-}
+    bashio::log.fatal "Your data_location value can only be set in /share, /config or /data (internal to addon). It will be reset to the default location : $LOCATION"
+fi
+
+# Set folders
+
 if [ ! -d /jellyfin ]; then
   echo "Creating /jellyfin"
   mkdir -p /jellyfin