--- /dev/null
+/*
+ * Copyright (c) 2015 Grzegorz Kostka (kostka.grzegorz@gmail.com)
+ * Copyright (c) 2015 Kaho Ng (ngkaho1234@gmail.com)
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * - The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** @addtogroup lwext4
+ * @{
+ */
+/**
+ * @file ext4_oflags.h
+ * @brief File opening & seeking flags.
+ */
+#ifndef EXT4_OFLAGS_H_
+#define EXT4_OFLAGS_H_
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/********************************FILE OPEN FLAGS*****************************/
+
+#if CONFIG_HAVE_OWN_OFLAGS
+
+ #ifndef O_RDONLY
+ #define O_RDONLY 00
+ #endif
+
+ #ifndef O_WRONLY
+ #define O_WRONLY 01
+ #endif
+
+ #ifndef O_RDWR
+ #define O_RDWR 02
+ #endif
+
+ #ifndef O_CREAT
+ #define O_CREAT 0100
+ #endif
+
+ #ifndef O_EXCL
+ #define O_EXCL 0200
+ #endif
+
+ #ifndef O_TRUNC
+ #define O_TRUNC 01000
+ #endif
+
+ #ifndef O_APPEND
+ #define O_APPEND 02000
+ #endif
+
+/********************************FILE SEEK FLAGS*****************************/
+
+ #ifndef SEEK_SET
+ #define SEEK_SET 0
+ #endif
+
+ #ifndef SEEK_CUR
+ #define SEEK_CUR 1
+ #endif
+
+ #ifndef SEEK_END
+ #define SEEK_END 2
+ #endif
+
+#else
+ #include <unistd.h>
+ #include <fcntl.h>
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* EXT4_OFLAGS_H_ */
+
+/**
+ * @}
+ */