From 5d784df18c7aee893fe8a90928802ba7edeeaeb3 Mon Sep 17 00:00:00 2001
From: Andrei Pavel <andrei@isc.org>
Date: Wed, 17 Sep 2025 09:37:40 +0300
Subject: [PATCH] [#4107] Add missing fcntl.h include for open()

---
 src/lib/util/pid_file.cc | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/lib/util/pid_file.cc b/src/lib/util/pid_file.cc
index 02d97b7342..7483b35359 100644
--- a/src/lib/util/pid_file.cc
+++ b/src/lib/util/pid_file.cc
@@ -1,4 +1,4 @@
-// Copyright (C) 2015 Internet Systems Consortium, Inc. ("ISC")
+// Copyright (C) 2015-2025 Internet Systems Consortium, Inc. ("ISC")
 //
 // This Source Code Form is subject to the terms of the Mozilla Public
 // License, v. 2.0. If a copy of the MPL was not distributed with this
@@ -7,11 +7,13 @@
 #include <config.h>
 
 #include <util/pid_file.h>
-#include <cstdio>
-#include <signal.h>
-#include <unistd.h>
+
 #include <cerrno>
+
+#include <fcntl.h>
+#include <signal.h>
 #include <sys/file.h>
+#include <unistd.h>
 
 namespace isc {
 namespace util {
-- 
2.47.3