rt-thread/components/libc/newlib/sys/fcntl.h

#ifndef __RTT_FCNTL_H__
#define __RTT_FCNTL_H__

/* Operation flags */
#define O_RDONLY		0000000
#define O_WRONLY		0000001
#define O_RDWR			0000002
#define O_ACCMODE		0000003
#define O_CREAT			0000100
#define O_EXCL			0000200
#define O_TRUNC			0001000
#define O_APPEND		0002000
#define O_DIRECTORY		0200000

#endif