first commit for chrg

2025-08-16 22:58:22 +08:00
commit 52a3ed5862
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+/*
+ * Copyright (c) 2006-2023, RT-Thread Development Team
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2023/06/08     Bernard      Add macro definition for `#pragma once`
+ */
+
+#ifndef UNISTD_H__
+#define UNISTD_H__
+
+#include "sys/unistd.h"
+
+#ifndef F_OK
+#define	F_OK	0
+#endif
+
+#ifndef R_OK
+#define	R_OK	4
+#endif
+
+#ifndef W_OK
+#define	W_OK	2
+#endif
+
+#ifndef X_OK
+#define	X_OK	1
+#endif
+
+#endif /* UNISTD_H__ */