From d3d15ea51636892efb81f517d0393a7e17715039 Mon Sep 17 00:00:00 2001
From: Sven Roederer <freifunk@it-solutions.geroedel.de>
Date: Tue, 13 Oct 2020 02:58:59 +0200
Subject: [PATCH] embedded_files: freeup ram before upgrade

freeup as much ram as possible before upgrade to cause less bricks on 32Mb RAM devices.
Initial idea for https://github.com/freifunk-berlin/firmware/issues/806
---
 .../lib/update/freifunk-berlin_freeup-ram.sh  | 24 +++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 embedded-files/lib/update/freifunk-berlin_freeup-ram.sh

diff --git a/embedded-files/lib/update/freifunk-berlin_freeup-ram.sh b/embedded-files/lib/update/freifunk-berlin_freeup-ram.sh
new file mode 100644
index 0000000000..3776eb4157
--- /dev/null
+++ b/embedded-files/lib/update/freifunk-berlin_freeup-ram.sh
@@ -0,0 +1,24 @@
+echo "This is the Freifunk Berlin-script"
+
+MEMLIMIT=33554432   # 32MB
+SERVICES="cron pingcheck uhttpd rpcd odhcpd"        
+
+MEMFREE=$(cat /proc/meminfo |grep MemTotal|awk '{print $2}')
+
+ifdown ffuplink
+
+echo stopping non-essential services
+for service in $SERVICES; do
+  echo -n "${service} "
+  [ -x /etc/init.d/${service} ] && /etc/init.d/${service} running && { /etc/init.d/${service} stop; echo -n " ..stopped.. "; }
+done
+echo ""
+
+echo flushing files from /tmp
+rm >/dev/null -f /tmp/luci-indexcache*
+rm >/dev/null -rf /tmp/luci-modulecache
+
+
+echo end of Freifunk Berlin-script
+#exit 10
+