From bb88e38a345c90465386d9eb746ea704c7343e80 Mon Sep 17 00:00:00 2001
From: Lorenz Kästle <12514511+RincewindsHat@users.noreply.github.com>
Date: Fri, 15 Nov 2024 15:10:50 +0100
Subject: check_swap stuff: Error out if meminfo file can not be opened

---
 plugins/check_swap.d/swap.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/plugins/check_swap.d/swap.c b/plugins/check_swap.d/swap.c
index ba8c6439..2fe4544f 100644
--- a/plugins/check_swap.d/swap.c
+++ b/plugins/check_swap.d/swap.c
@@ -69,6 +69,13 @@ swap_result getSwapFromProcMeminfo(char proc_meminfo[]) {
 	swap_result result = {0};
 	result.errorcode = STATE_UNKNOWN;
 
+	if (meminfo_file_ptr == NULL) {
+		// failed to open meminfo file
+		// errno should contain an error
+		result.errorcode = STATE_UNKNOWN;
+		return result;
+	}
+
 	uint64_t swap_total = 0;
 	uint64_t swap_used = 0;
 	uint64_t swap_free = 0;
-- 
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