#ifndef _FCNTL_H#define _FCNTL_H#include <sys/types.h>/* open/fcntl - NOCTTY, NDELAY isn't implemented yet */#define O_ACCMODE	00003#define O_RDONLY	   00#define O_WRONLY	   01#define O_RDWR		   02#define O_CREAT		00100	/* not fcntl */#define O_EXCL		00200	/* not fcntl */#define O_NOCTTY	00400	/* not fcntl */#define O_TRUNC		01000	/* not fcntl */#define O_APPEND	02000#define O_NONBLOCK	04000	/* not fcntl */#define O_NDELAY	O_NONBLOCK/* Defines for fcntl-commands. Note that currently * locking isn't supported, and other things aren't really * tested. */#define F_DUPFD		0	/* dup */#define F_GETFD		1	/* get f_flags */#define F_SETFD		2	/* set f_flags */#define F_GETFL		3	/* more flags (cloexec) */#define F_SETFL		4#define F_GETLK		5	/* not implemented */#define F_SETLK		6#define F_SETLKW	7/* for F_[GET|SET]FL */#define FD_CLOEXEC	1	/* actually anything with low bit set goes *//* Ok, these are locking features, and aren't implemented at any * level. POSIX wants them. */#define F_RDLCK		0#define F_WRLCK		1#define F_UNLCK		2/* Once again - not implemented, but ... */struct flock {	short l_type;	short l_whence;	off_t l_start;	off_t l_len;	pid_t l_pid;};extern int creat(const char * filename,mode_t mode);extern int fcntl(int fildes,int cmd, ...);extern int open(const char * filename, int flags, ...);#endif