From 95bfafd60d293c8208accf57d01241a94a728349 Mon Sep 17 00:00:00 2001
From: Matthias Reichl <hias@horus.com>
Date: Tue, 5 Sep 2017 09:17:30 +0200
Subject: [PATCH] kodi: support kernel overlays in service addon wrapper

update context is intended to be used on settings change.
This can later be extended to support selecting between
multiple overlays in an addon via config files in the
addon userdata dir.

Signed-off-by: Matthias Reichl <hias@horus.com>
---
 .../kodi/scripts/service-addon-wrapper        | 45 +++++++++++++++++++
 1 file changed, 45 insertions(+)

diff --git a/packages/mediacenter/kodi/scripts/service-addon-wrapper b/packages/mediacenter/kodi/scripts/service-addon-wrapper
index ced608c6ba..83aca484fa 100755
--- a/packages/mediacenter/kodi/scripts/service-addon-wrapper
+++ b/packages/mediacenter/kodi/scripts/service-addon-wrapper
@@ -64,3 +64,48 @@ if [ -f "${SERVICE_FILE}" ] ; then
       ;;
   esac
 fi
+
+if [ ! -d /storage/.cache/kernel-overlays ] ; then
+  mkdir -p /storage/.cache/kernel-overlays
+fi
+
+# kernel-overlay addons built into the image have their
+# files installed in the default /usr/lib/kernel-overlays
+# location, not inside the kodi addon dir
+
+case "${ADDON_PATH}" in
+  /usr/share/kodi/addons/*)
+    OVERLAY_PATH="/usr/lib/kernel-overlays/${ADDON_ID}"
+    ;;
+  *)
+    OVERLAY_PATH="${ADDON_PATH}/kernel-overlay"
+    ;;
+esac
+
+create_overlay_conf() {
+  rm -f "${OVERLAY_CONF}"
+  echo "${OVERLAY_PATH}" > "${OVERLAY_CONF}"
+}
+
+if [ -d "${OVERLAY_PATH}" ] ; then
+  OVERLAY_CONF="/storage/.cache/kernel-overlays/50-${ADDON_ID}.conf"
+
+  case "${CONTEXT}" in
+    enable | post-install )
+      create_overlay_conf
+      ;;
+    disable | pre-uninstall )
+      rm -f "${OVERLAY_CONF}"
+      ;;
+    update )
+      if [ -e "${OVERLAY_CONF}" ] ; then
+        create_overlay_conf
+      fi
+      ;;
+    *)
+      echo "$0: unknown overlay context $CONTEXT"
+      exit 1
+      ;;
+  esac
+
+fi