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