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/* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc., 675 Mass Ave,
Cambridge, MA 02139, USA. */
/*
* POSIX Standard: 6.5 File Control Operations <fcntl.h>
*/
#ifndef _FCNTL_H
#define _FCNTL_H 1
#include <features.h>
#include <fcntlbits.h>
#include <filebits.h>
/* Values for the second argument to fcntl. */
#define F_DUPFD __F_DUPFD /* Duplicate file descriptor. */
#define F_GETFD __F_GETFD /* Get file descriptor flags. */
#define F_SETFD __F_SETFD /* Set file descriptor flags. */
#define F_GETFL __F_GETFL /* Get file status flags. */
#define F_SETFL __F_SETFL /* Set file status flags. */
#define F_GETLK __F_GETLK /* Get record locking info. */
#define F_SETLK __F_SETLK /* Set record locking info. */
#define F_SETLKW __F_SETLKW /* Set record locking, block. */
#ifdef __USE_BSD
#define F_GETOWN __F_GETOWN /* Get owner (receiver of SIGIO). */
#define F_SETOWN __F_SETOWN /* Set owner (receiver of SIGIO). */
#endif
/* File descriptor flags used with F_GETFD and F_SETFD. */
#define FD_CLOEXEC __FD_CLOEXEC /* Close on exec. */
/* File access modes for open and fcntl. */
#define O_RDONLY __O_RDONLY /* Open read-only. */
#define O_WRONLY __O_WRONLY /* Open write-only. */
#define O_RDWR __O_RDWR /* Open read/write. */
/* Bits OR'd into the second argument to open. */
#define O_CREAT __O_CREAT /* Create file if it doesn't exist. */
#define O_EXCL __O_EXCL /* Fail if file already exists. */
#define O_TRUNC __O_TRUNC /* Truncate file to zero length. */
#define O_NOCTTY __O_NOCTTY /* Don't assign a controlling tty. */
/* File status flags for `open' and `fcntl'. */
#define O_APPEND __O_APPEND /* Writes append to the file. */
#define O_NONBLOCK __O_NONBLOCK /* No delay when opening the file. */
#ifdef __USE_BSD
#define O_NDELAY __O_NDELAY
#endif
#ifdef __USE_MISC
/* Unix-style flags for `fcntl' F_GETFL and F_SETFL. */
#define FREAD 0x1 /* Read access. */
#define FWRITE 0x2 /* Write access. */
#define FNDELAY O_NONBLOCK
#define FAPPEND O_APPEND
#define FASYNC 0x40 /* Send SIGIO when data is ready. */
#define FCREAT O_CREAT
#define FTRUNC O_TRUNC
#define FEXCL O_EXCL
#define FSYNC 0x2000 /* Synchronous writes. */
#ifndef R_OK /* Verbatim from <unistd.h>. Ugh. */
/* Values for the second argument to access.
These may be OR'd together. */
#define R_OK 4 /* Test for read permission. */
#define W_OK 2 /* Test for write permission. */
#define X_OK 1 /* Test for execute permission. */
#define F_OK 0 /* Test for existence. */
#endif
#endif /* Use misc. */
/* Mask for file access modes. */
#define O_ACCMODE __O_ACCMODE
/* Do the file control operation described by CMD on FD.
The remaining arguments are interpreted depending on CMD. */
extern int EXFUN(__fcntl, (int __fd, int __cmd, ...));
/* Open FILE and return a new file descriptor for it, or -1 on error.
OFLAG determines the type of access used. If O_CREAT is on OFLAG,
the third argument is taken as a `mode_t', the mode of the created file. */
extern int EXFUN(__open, (CONST char *__file, int __oflag, ...));
#define fcntl __fcntl
#define open __open
/* Create and open FILE, with mode MODE.
This takes an `int' MODE argument because that is
what `mode_t' will be widened to. */
extern int EXFUN(creat, (CONST char *__file, __mode_t __mode));
#ifdef __OPTIMIZE__
#define creat(file, m) __open((file), O_WRONLY|O_CREAT|O_TRUNC, (m))
#endif /* Optimizing. */
#define flock __flock
#define F_RDLCK __F_RDLCK
#define F_WRLCK __F_WRLCK
#define F_UNLCK __F_UNLCK
#endif /* fcntl.h */
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