From 17446168669bc4645feef4ad26a4ef992a952780 Mon Sep 17 00:00:00 2001
From: Michael Zillgith <michael.zillgith@mz-automation.de>
Date: Fri, 3 Apr 2020 18:14:29 +0200
Subject: [PATCH] - IEC 61850 server: RCB - fixed problem that other client can
 "steal" reservation

---
 src/iec61850/server/mms_mapping/reporting.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/iec61850/server/mms_mapping/reporting.c b/src/iec61850/server/mms_mapping/reporting.c
index b93af1f6c..f679ab40e 100644
--- a/src/iec61850/server/mms_mapping/reporting.c
+++ b/src/iec61850/server/mms_mapping/reporting.c
@@ -1365,6 +1365,11 @@ Reporting_RCBWriteAccessHandler(MmsMapping* self, ReportControl* rc, char* eleme
         }
     }
 
+    if ((rc->reserved) && (rc->clientConnection != connection)) {
+        retVal = DATA_ACCESS_ERROR_TEMPORARILY_UNAVAILABLE;
+        goto exit_function;
+    }
+
     if (strcmp(elementName, "RptEna") == 0) {
 
         if (value->value.boolean == true) {