From f341472c1716c2d1fb692e187785c7972bfc90c6 Mon Sep 17 00:00:00 2001
From: Fabio Manganiello <info@fabiomanganiello.com>
Date: Mon, 31 Jan 2022 01:46:35 +0100
Subject: [PATCH] Ensure that only one autorotate instance runs at the time

---
 bin/autorotate | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/bin/autorotate b/bin/autorotate
index 8f8f6e2..37659bb 100755
--- a/bin/autorotate
+++ b/bin/autorotate
@@ -1,5 +1,12 @@
 #!/bin/bash
 
+pidfile=/tmp/autorotate.pid
+if ps -p $(cat "$pidfile" 2>/dev/null) >/dev/null; then
+    echo "An autorotate process is already running - if not please remove $pidfile" >&2
+    exit 1
+fi
+
+echo $$ > "$pidfile"
 script_dir="$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )"
 source "$script_dir/cutiepi-screen-common"