fcntl.h

KPIT GNU Tools is a set of GNU development tools for Renesas microcontrollers.

/* This file is to be kept in sync with newlib/libc/include/sys/fcntl.h,
   on which it is based, except values used or returned by syscalls must
   be those of the Linux/CRIS kernel.  */

#ifndef	_FCNTL_
#ifdef __cplusplus
extern "C" {
#endif
#define	_FCNTL_
#include <_ansi.h>
#define	_FOPEN		(-1)	/* from sys/file.h, kernel use only */
#define	_FREAD		0x0001	/* read enabled */
#define	_FWRITE		0x0002	/* write enabled */
#define	_FNDELAY	0x0800	/* non blocking I/O (4.2 style) */
#define	_FAPPEND	0x0400	/* append (writes guaranteed at the end) */
#define	_FMARK		0x0010	/* internal; mark during gc() */
#define	_FDEFER		0x0020	/* internal; defer for next gc pass */
#define	_FASYNC		0x2000	/* signal pgrp when data ready */
#define	_FCREAT		0x0040	/* open with file create */
#define	_FTRUNC		0x0200	/* open with truncation */
#define	_FEXCL		0x0080	/* error on open if file exists */
#define	_FNBIO	    _FNONBLOCK	/* non blocking I/O (sys5 style) */
#define	_FSYNC		0x1000	/* do all writes synchronously */
#define	_FNONBLOCK	0x0800	/* non blocking I/O (POSIX style) */
#define	_FNOCTTY	0x0100	/* don't assign a ctty on this open */

#define	O_ACCMODE	(O_RDONLY|O_WRONLY|O_RDWR)

/*
 * Flag values for open(2) and fcntl(2)
 * The kernel adds 1 to the open modes to turn it into some
 * combination of FREAD and FWRITE.
 */
#define	O_RDONLY	0		/* +1 == FREAD */
#define	O_WRONLY	1		/* +1 == FWRITE */
#define	O_RDWR		2		/* +1 == FREAD|FWRITE */
#define	O_APPEND	_FAPPEND
#define	O_CREAT		_FCREAT
#define	O_TRUNC		_FTRUNC
#define	O_EXCL		_FEXCL
/*	O_SYNC		_FSYNC		not posix, defined below */
/*	O_NDELAY	_FNDELAY 	set in include/fcntl.h */
/*	O_NDELAY	_FNBIO 		set in 5include/fcntl.h */
#define	O_NONBLOCK	_FNONBLOCK
#define	O_NOCTTY	_FNOCTTY

#ifndef	_POSIX_SOURCE

#define	O_SYNC		_FSYNC

/*
 * Flags that work for fcntl(fd, F_SETFL, FXXXX)
 */
#define	FAPPEND		_FAPPEND
#define	FSYNC		_FSYNC
#define	FASYNC		_FASYNC
#define	FNBIO		_FNBIO
#define	FNONBIO		_FNONBLOCK	/* XXX fix to be NONBLOCK everywhere */
#define	FNDELAY		_FNDELAY

/*
 * Flags that are disallowed for fcntl's (FCNTLCANT);
 * used for opens, internal state, or locking.
 */
#define	FREAD		_FREAD
#define	FWRITE		_FWRITE
#define	FMARK		_FMARK
#define	FDEFER		_FDEFER
#define	FSHLOCK		_FSHLOCK
#define	FEXLOCK		_FEXLOCK

/*
 * The rest of the flags, used only for opens
 */
#define	FOPEN		_FOPEN
#define	FCREAT		_FCREAT
#define	FTRUNC		_FTRUNC
#define	FEXCL		_FEXCL
#define	FNOCTTY		_FNOCTTY

#endif	/* !_POSIX_SOURCE */

/* XXX close on exec request; must match UF_EXCLOSE in user.h */
#define	FD_CLOEXEC	1	/* posix */

/* fcntl(2) requests */
#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
#define F_SETLK		6
#define F_SETLKW	7

#define F_SETOWN	8	/*  for sockets. */
#define F_GETOWN	9	/*  for sockets. */

/* for F_[GET|SET]FL */
#define FD_CLOEXEC	1	/* actually anything with low bit set goes */

/* for posix fcntl() and lockf() */
#define F_RDLCK		0
#define F_WRLCK		1
#define F_UNLCK		2

/* for old implementation of bsd flock () */
#define F_EXLCK		4	/* or 3 */
#define F_SHLCK		8	/* or 4 */

/* operations for bsd flock(), also used by the kernel implementation */
#define LOCK_SH		1	/* shared lock */
#define LOCK_EX		2	/* exclusive lock */
#define LOCK_NB		4	/* or'd with one of the above to prevent
				   blocking */
#define LOCK_UN		8	/* remove lock */

/* file segment locking set data type - information passed to system by user */
struct flock {
	short	l_type;		/* F_RDLCK, F_WRLCK, or F_UNLCK */
	short	l_whence;	/* flag to choose starting offset */
	long	l_start;	/* relative offset, in bytes */
	long	l_len;		/* length, in bytes; 0 means lock to EOF */
	short	l_pid;		/* returned with F_GETLK */
	short	l_xxx;		/* reserved for future use */
};

#ifndef	_POSIX_SOURCE
/* extended file segment locking set data type */
struct eflock {
	short	l_type;		/* F_RDLCK, F_WRLCK, or F_UNLCK */
	short	l_whence;	/* flag to choose starting offset */
	long	l_start;	/* relative offset, in bytes */
	long	l_len;		/* length, in bytes; 0 means lock to EOF */
	short	l_pid;		/* returned with F_GETLK */
	short	l_xxx;		/* reserved for future use */
	long	l_rpid;		/* Remote process id wanting this lock */
	long	l_rsys;		/* Remote system id wanting this lock */
};
#endif	/* !_POSIX_SOURCE */


#include <sys/types.h>
#include <sys/stat.h>		/* sigh. for the mode bits for open/creat */

extern int open _PARAMS ((const char *, int, ...));
extern int creat _PARAMS ((const char *, mode_t));
extern int fcntl _PARAMS ((int, int, ...));

/* Provide _<systemcall> prototypes for functions provided by some versions
   of newlib.  */
#ifdef _COMPILING_NEWLIB
extern int _open _PARAMS ((const char *, int, ...));
extern int _fcntl _PARAMS ((int, int, ...));
#ifdef __LARGE64_FILES
extern int _open64 _PARAMS ((const char *, int, ...));
#endif
#endif

#ifdef __cplusplus
}
#endif
#endif	/* !_FCNTL_ */