From 44f7417b7f0e975a67b9159bf378ed356ff66856 Mon Sep 17 00:00:00 2001
From: Christian Hesse <mail@eworm.de>
Date: Sun, 22 Jun 2025 00:15:17 +0200
Subject: [PATCH] global-functions: $FileGet: mitigate race with file
 properties

RouterOS is suffering a race condition, where a file exists, but its
properties are not (yet) available. This is handled in $WaitForFile.

This passes an interval of zero to $WaitForFile, as does not wait for
the file to exist, but wants to avoid the race only.
---
 global-functions.rsc | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/global-functions.rsc b/global-functions.rsc
index fd89f0f..829cbf2 100644
--- a/global-functions.rsc
+++ b/global-functions.rsc
@@ -559,6 +559,12 @@
 :set FileGet do={
   :local FileName [ :tostr $1 ];
 
+  :global WaitForFile;
+
+  :if ([ $WaitForFile $FileName 0s ] = false) do={
+    :return false;
+  }
+
   :local FileVal false;
   :do {
     :set FileVal [ /file/get $FileName ];