From 95215adf6d9317e11be1118fb6144396c6dddf04 Mon Sep 17 00:00:00 2001
From: Joerg Jaspert <joerg@debian.org>
Date: Fri, 18 Dec 2015 22:25:32 +0100
Subject: [PATCH] cron.hourly locks itself

---
 config/debian/cron.hourly | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/config/debian/cron.hourly b/config/debian/cron.hourly
index 3c58395c..d2451b8a 100755
--- a/config/debian/cron.hourly
+++ b/config/debian/cron.hourly
@@ -2,6 +2,10 @@
 #
 # Executed hourly via cron, out of dak's crontab.
 
+# Only one of me should ever run.
+[  "${FLOCKER}"  != "$0" ] && exec env FLOCKER="$0" flock -E 0 -en "$0" "$0"
+"$@" || :
+
 set -e
 set -o pipefail
 set -u
-- 
2.39.5