4.3BSD-Reno/src/sys/sys/fcntl.h

/*-
 * Copyright (c) 1983, 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution is only permitted until one year after the first shipment
 * of 4.4BSD by the Regents.  Otherwise, redistribution and use in source and
 * binary forms are permitted provided that: (1) source distributions retain
 * this entire copyright notice and comment, and (2) distributions including
 * binaries display the following acknowledgement:  This product includes
 * software developed by the University of California, Berkeley and its
 * contributors'' in the documentation or other materials provided with the
 * distribution and in all advertising materials mentioning features or use
 * of this software.  Neither the name of the University nor the names of
 * its contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 *	@(#)fcntl.h	5.5 (Berkeley) 5/29/90
 */

#ifndef F_DUPFD

/* command values for fcntl(2) */
#define	F_DUPFD		0		/* duplicate file descriptor */
#define	F_GETFD		1		/* get file descriptor flags */
#define	F_SETFD		2		/* set file descriptor flags */
#define	F_GETFL		3		/* get file status flags */
#define	F_SETFL		4		/* set file status flags */
#ifndef _POSIX_SOURCE
#define	F_GETOWN	5		/* get SIGIO/SIGURG proc/pgrp */
#define F_SETOWN	6		/* set SIGIO/SIGURG proc/pgrp */
#endif
#define	F_GETLK		7		/* get record locking information */
#define	F_SETLK		8		/* set record locking information */
#define	F_SETLKW	9		/* F_SETLK; wait if blocked */

/* file descriptor flags (F_GETFD, F_SETFD) */
#define	FD_CLOEXEC	1		/* close-on-exec flag */

/* record locking flags (F_GETLK, F_SETLK, F_SETLKW) */
#define	F_RDLCK		1		/* shared or read lock */
#define	F_UNLCK		2		/* unlock */
#define	F_WRLCK		3		/* exclusive or write lock */

#ifndef _POSIX_SOURCE
/* lock operations for flock(2) */
#define	LOCK_SH		0x01		/* shared file lock */
#define	LOCK_EX		0x02		/* exclusive file lock */
#define	LOCK_NB		0x04		/* don't block when locking */
#define	LOCK_UN		0x08		/* unlock file */
#endif

/* file status flags */
#define	O_RDONLY	00000		/* open for reading only */
#define	O_WRONLY	00001		/* open for writing only */
#define	O_RDWR		00002		/* open for reading and writing */
#define	O_NONBLOCK	00004		/* no delay */
#ifndef _POSIX_SOURCE
#define	O_NDELAY	O_NONBLOCK
#define	FNDELAY		O_NONBLOCK
#endif
/*			00008		/* unused */
#define	O_APPEND	00010		/* set append mode */
#ifndef _POSIX_SOURCE
#define	FAPPEND		O_APPEND
#endif
					/* kernel placeholders */
#if !defined(_POSIX_SOURCE) && defined(KERNEL)
#define	O_MARK		00020		/* mark during gc() */
#define	O_DEFER		00040		/* defer for next gc pass */
#endif
/*			00080		/* unused */
#ifndef _POSIX_SOURCE
#define	O_ASYNC		00100		/* signal pgrp when data ready */
#define	FASYNC		O_ASYNC
#define	O_SHLOCK	00200		/* shared file lock present */
#define	O_EXLOCK	00400		/* exclusive file lock present */
/*			00800		/* unused */
#endif
#define	O_CREAT		01000		/* create if nonexistant */
#define	O_TRUNC		02000		/* truncate to zero length */
#define	O_EXCL		04000		/* error if already exists */
/*			08000		/* unused */

/* defined by POSIX 1003.1; BSD default, so no bit required */
#define	O_NOCTTY	0		/* don't assign controlling terminal */

/* mask for file access modes */
#define	O_ACCMODE	(O_RDONLY|O_WRONLY|O_RDWR)

#if __STDC__ || c_plusplus
extern int fcntl(int, int, int);
extern int creat(const char *, mode_t);
extern int open(const char *, int, ...);
#else
extern int fcntl();
extern int creat();
extern int open();
#endif

#endif /* !F_DUPFD */