fcntlcom.h

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/* sys/fcntlcom.h */
/*
 * Copyright (c) 1983 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 */

#ifndef	__SYS_FCNTLCOM_H__
#define	__SYS_FCNTLCOM_H__

#if	defined(__cplusplus)
extern	"C"	{
#endif	/* defined(__cplusplus) */

/*
 * Rewack the FXXXXX values as _FXXXX so that _POSIX_SOURCE works.
 */
#define	_FOPEN		(-1)	/* from sys/file.h, kernel use only */
#define	_FREAD		0x0001	/* read enabled */
#define	_FWRITE		0x0002	/* write enabled */
#define	_FNDELAY	0x0004	/* non blocking I/O (4.2 style) */
#define	_FAPPEND	0x0008	/* append (writes guaranteed at the end) */
#define	_FMARK		0x0010	/* internal; mark during gc() */
#define	_FDEFER		0x0020	/* internal; defer for next gc pass */
#define	_FASYNC		0x0040	/* signal pgrp when data ready */
#define	_FSHLOCK	0x0080	/* BSD flock() shared lock present */
#define	_FEXLOCK	0x0100	/* BSD flock() exclusive lock present */
#define	_FCREAT		0x0200	/* open with file create */
#define	_FTRUNC		0x0400	/* open with truncation */
#define	_FEXCL		0x0800	/* error on open if file exists */
#define	_FNBIO		0x1000	/* non blocking I/O (sys5 style) */
#define	_FSYNC		0x2000	/* do all writes synchronously */
#define	_FNONBLOCK	0x4000	/* non blocking I/O (POSIX style) */
#define	_FNOCTTY	0x8000	/* don't assign a ctty on this open */
#define	_FBINARY	0x10000	/* open file for binary data */

#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
#define	O_BINARY	_FBINARY

#if	!defined(_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	/* !defined(_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	/* Duplicate fildes */
#define	F_GETFD		1	/* Get fildes flags (close on exec) */
#define	F_SETFD		2	/* Set fildes flags (close on exec) */
#define	F_GETFL		3	/* Get file flags */
#define	F_SETFL		4	/* Set file flags */
#if	!defined(_POSIX_SOURCE)
#define	F_GETOWN 	5	/* Get owner - for ASYNC */
#define	F_SETOWN 	6	/* Set owner - for ASYNC */
#endif	/* !defined(_POSIX_SOURCE) */
#define	F_GETLK  	7	/* Get record-locking information */
#define	F_SETLK  	8	/* Set or Clear a record-lock (Non-Blocking) */
#define	F_SETLKW 	9	/* Set or Clear a record-lock (Blocking) */
#if	!defined(_POSIX_SOURCE)
#define	F_RGETLK 	10	/* Test a remote lock to see if it is blocked */
#define	F_RSETLK 	11	/* Set or unlock a remote lock */
#define	F_CNVT 		12	/* Convert a fhandle to an open fd */
#define	F_RSETLKW 	13	/* Set or Clear remote record-lock(Blocking) */
#define	F_BINARY 	14	/* Set binary mode (for stdin/stdout) */
#endif	/* !defined(_POSIX_SOURCE) */

/* fcntl(2) flags (l_type field of flock structure) */
#define	F_RDLCK		1	/* read lock */
#define	F_WRLCK		2	/* write lock */
#define	F_UNLCK		3	/* remove lock(s) */
#if	!defined(_POSIX_SOURCE)
#define	F_UNLKSYS	4	/* remove remote locks for a given system */
#endif	/* !defined(_POSIX_SOURCE) */

/* The open() system call. */
extern	int	_open(const char *path, int oflag, ...);

#if	!defined(__STRICT_ANSI__) || defined(_POSIX_SOURCE)

extern	int	open(const char *path, int oflag, ...);

#endif	/* !defined(__STRICT_ANSI__) || defined(_POSIX_SOURCE) */

#if	defined(__cplusplus)
}
#endif	/* defined(__cplusplus) */

#endif	/* !__SYS_FCNTLCOM_H__ */

/* sys/fcntlcom.h */