From 05c29512ec030792c7f8218211a1b44a1caa0de6 Mon Sep 17 00:00:00 2001
From: Matthias Schiffer <mschiffer@universe-factory.net>
Date: Tue, 28 Dec 2021 20:41:29 +0100
Subject: [PATCH] gluon-core: sysconfig: avoid unnecessary writes

Do not write files when the content is unchanged.

Avoids a few unnecessary filesystem writes when resetting ifname
sysconfigs on each upgrade.
---
 package/gluon-core/luasrc/usr/lib/lua/gluon/sysconfig.lua | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/package/gluon-core/luasrc/usr/lib/lua/gluon/sysconfig.lua b/package/gluon-core/luasrc/usr/lib/lua/gluon/sysconfig.lua
index 93eb6ed16..7caf05c6a 100644
--- a/package/gluon-core/luasrc/usr/lib/lua/gluon/sysconfig.lua
+++ b/package/gluon-core/luasrc/usr/lib/lua/gluon/sysconfig.lua
@@ -11,6 +11,10 @@ local function get(_, name)
 end
 
 local function set(_, name, val)
+	if val == get(nil, name) then
+		return
+	end
+
 	if val then
 		local f = io.open(sysconfigdir .. name, 'w+')
 		f:write(val, '\n')
-- 
GitLab