From 8acdb5d1e208d2712daf01e512ad345d2ce5bd7e Mon Sep 17 00:00:00 2001
From: Miroslav Lichvar <mlichvar@redhat.com>
Date: Thu, 25 Feb 2021 16:59:27 +0100
Subject: [PATCH] refclock: warn if lock refid is invalid

Log a warning message if the specified lock refid doesn't match any
existing refclock or it matches the refclock which has the lock option
itself.
---
 refclock.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/refclock.c b/refclock.c
index 5cc2ca2..fcf7d59 100644
--- a/refclock.c
+++ b/refclock.c
@@ -296,6 +296,9 @@ RCL_StartRefclocks(void)
         lock_index = j;
         break;
       }
+
+      if (lock_index == -1 || lock_index == i)
+        LOG(LOGS_WARN, "Invalid lock refid %s", UTI_RefidToString(inst->lock_ref));
     }
 
     inst->lock_ref = lock_index;