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minix/sys/sys/fcntl.h
Lionel Sambuc f6aac1c3b5 Moving all NetBSD headers back where they belong. 
Moving include/sys NetBSD headers to /sys/sys
Moving include/arch/*/ NetBSD headers to /sys/arch/*/include

Change-Id: Ia1a45d4e83ab806c84093ec2b61bdbea9bed65a0
2013-01-14 11:36:25 +01:00

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/* $NetBSD: fcntl.h,v 1.42 2012/01/25 00:28:35 christos Exp $ */
/*-
* Copyright (c) 1983, 1990, 1993
* The Regents of the University of California. All rights reserved.
* (c) UNIX System Laboratories, Inc.
* All or some portions of this file are derived from material licensed
* to the University of California by American Telephone and Telegraph
* Co. or Unix System Laboratories, Inc. and are reproduced herein with
* the permission of UNIX System Laboratories, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. 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 BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)fcntl.h 8.3 (Berkeley) 1/21/94
*/
#ifndef _SYS_FCNTL_H_
#define _SYS_FCNTL_H_
/*
* This file includes the definitions for open and fcntl
* described by POSIX for <fcntl.h>; it also includes
* related kernel definitions.
*/
#ifndef _KERNEL
#include <sys/featuretest.h>
#include <sys/types.h>
#if defined(_XOPEN_SOURCE) || defined(_NETBSD_SOURCE)
#include <sys/stat.h>
#endif /* _XOPEN_SOURCE || _NETBSD_SOURCE */
#endif /* !_KERNEL */
/*
* File status flags: these are used by open(2), fcntl(2).
* They are also used (indirectly) in the kernel file structure f_flags,
* which is a superset of the open/fcntl flags. Open flags and f_flags
* are inter-convertible using OFLAGS(fflags) and FFLAGS(oflags).
* Open/fcntl flags begin with O_; kernel-internal flags begin with F.
*/
/* open-only flags */
#define O_RDONLY 0x00000000 /* open for reading only */
#define O_WRONLY 0x00000001 /* open for writing only */
#define O_RDWR 0x00000002 /* open for reading and writing */
#define O_ACCMODE 0x00000003 /* mask for above modes */
/* File status flags for open() and fcntl(). POSIX Table 6-5. */
#define O_APPEND 02000 /* set append mode */
#define O_NONBLOCK 04000 /* no delay */
#define O_REOPEN 010000 /* automatically re-open device after driver
* restart
*/
#ifndef __minix /* NOT SUPPORTED! */
#if defined(_NETBSD_SOURCE)
#define O_SHLOCK 0x00000010 /* open with shared file lock */
#define O_EXLOCK 0x00000020 /* open with exclusive file lock */
#define O_ASYNC 0x00000040 /* signal pgrp when data ready */
#endif
#if (_POSIX_C_SOURCE - 0) >= 199309L || \
(defined(_XOPEN_SOURCE) && defined(_XOPEN_SOURCE_EXTENDED)) || \
(_XOPEN_SOURCE - 0) >= 500 || defined(_NETBSD_SOURCE)
#define O_SYNC 0x00000080 /* synchronous writes */
#endif
#if defined(_NETBSD_SOURCE)
#define O_NOFOLLOW 0x00000100 /* don't follow symlinks on the last */
/* path component */
#endif
#endif /* !__minix */
/* Oflag values for open(). POSIX Table 6-4. */
#define O_CREAT 00100 /* creat file if it doesn't exist */
#define O_EXCL 00200 /* exclusive use flag */
#define O_NOCTTY 00400 /* do not assign a controlling terminal */
#define O_TRUNC 01000 /* truncate flag */
#ifndef __minix /* NOT SUPPORTED! */
#if (_POSIX_C_SOURCE - 0) >= 199309L || (_XOPEN_SOURCE - 0) >= 500 || \
defined(_NETBSD_SOURCE)
#define O_DSYNC 0x00010000 /* write: I/O data completion */
#define O_RSYNC 0x00020000 /* read: I/O completion as for write */
#endif
#if defined(_NETBSD_SOURCE)
#define O_ALT_IO 0x00040000 /* use alternate i/o semantics */
#define O_DIRECT 0x00080000 /* direct I/O hint */
#endif
#endif /* !__minix */
/*
* Constants used for fcntl(2)
*/
/* command values */
/* These values are used for cmd in fcntl(). POSIX Table 6-1. */
#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 */
#define F_GETLK 5 /* get record locking information */
#define F_SETLK 6 /* set record locking information */
#define F_SETLKW 7 /* set record locking info; wait if blocked */
#define F_FREESP 8 /* free a section of a regular file */
/* File descriptor flags used for fcntl(). POSIX Table 6-2. */
#define FD_CLOEXEC 1 /* close on exec flag for third arg of fcntl */
/* record locking flags (F_GETLK, F_SETLK, F_SETLKW) */
#define F_RDLCK 1 /* shared or read lock */
#define F_WRLCK 2 /* exclusive or write lock */
#define F_UNLCK 3 /* unlock */
/*
* Advisory file segment locking data type -
* information passed to system by user
*/
struct flock {
short l_type; /* type: F_RDLCK, F_WRLCK, or F_UNLCK */
short l_whence; /* flag for starting offset */
off_t l_start; /* relative offset in bytes */
off_t l_len; /* size; if 0, then until EOF */
pid_t l_pid; /* process id of the locks' owner */
};
#if defined(_NETBSD_SOURCE)
/* lock operations for flock(2) */
#define LOCK_SH F_RDLCK /* Shared lock */
#define LOCK_EX F_WRLCK /* Exclusive lock */
#define LOCK_NB 0x0080 /* Do not block when locking */
#define LOCK_UN F_UNLCK /* Unlock */
#endif
/* Always ensure that these are consistent with <stdio.h> and <unistd.h>! */
#ifndef SEEK_SET
#define SEEK_SET 0 /* set file offset to offset */
#endif
#ifndef SEEK_CUR
#define SEEK_CUR 1 /* set file offset to current plus offset */
#endif
#ifndef SEEK_END
#define SEEK_END 2 /* set file offset to EOF plus offset */
#endif
/*
* posix_advise advisories.
*/
#define POSIX_FADV_NORMAL 0 /* default advice / no advice */
#define POSIX_FADV_RANDOM 1 /* random access */
#define POSIX_FADV_SEQUENTIAL 2 /* sequential access(lower to higher) */
#define POSIX_FADV_WILLNEED 3 /* be needed in near future */
#define POSIX_FADV_DONTNEED 4 /* not be needed in near future */
#define POSIX_FADV_NOREUSE 5 /* be accessed once */
/*
* Constants for X/Open Extended API set 2 (a.k.a. C063)
*/
#if defined(_INCOMPLETE_XOPEN_C063) || defined(_KERNEL)
#define AT_FDCWD -100 /* Use cwd for relative link target */
#define AT_EACCESS 0x100 /* Use euig/egid for access checks */
#define AT_SYMLINK_NOFOLLOW 0x200 /* Do not follow symlinks */
#define AT_SYMLINK_FOLLOW 0x400 /* Follow symlinks */
#define AT_REMOVEDIR 0x800 /* Remove directory only */
#endif
#ifndef _KERNEL
#include <sys/cdefs.h>
__BEGIN_DECLS
int open(const char *, int, ...);
int creat(const char *, mode_t);
int fcntl(int, int, ...);
#if defined(_NETBSD_SOURCE)
int flock(int, int);
#endif /* _NETBSD_SOURCE */
__END_DECLS
#endif /* _KERNEL */
#endif /* !_SYS_FCNTL_H_ */
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