--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/fuhtark_test/include/sys/locking.h	Wed Nov 26 21:36:48 2025 +0700
@@ -0,0 +1,30 @@
+/**
+ * This file has no copyright assigned and is placed in the Public Domain.
+ * This file is part of the w64 mingw-runtime package.
+ * No warranty is given; refer to the file DISCLAIMER within this package.
+ */
+#ifndef _INC_LOCKING
+#define _INC_LOCKING
+
+#ifndef _WIN32
+#error Only Win32 target is supported!
+#endif
+
+/* All the headers include this file. */
+#include <_mingw.h>
+
+#define _LK_UNLCK 0
+#define _LK_LOCK 1
+#define _LK_NBLCK 2
+#define _LK_RLCK 3
+#define _LK_NBRLCK 4
+
+#ifndef	NO_OLDNAMES
+#define LK_UNLCK _LK_UNLCK
+#define LK_LOCK _LK_LOCK
+#define LK_NBLCK _LK_NBLCK
+#define LK_RLCK _LK_RLCK
+#define LK_NBRLCK _LK_NBRLCK
+#endif
+
+#endif