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/* Copyright (C) 1991, 92, 94, 95, 96, 97, 98 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 not,
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   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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   Boston, MA 02111-1307, 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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/* This must be early so <bits/fcntl.h> can define types winningly.  */
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__BEGIN_DECLS
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/* Get the definitions of O_*, F_*, FD_*: all the
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   numbers and flag bits for `open', `fcntl', et al.  */
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#include <bits/fcntl.h>
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/* For XPG all symbols from <sys/stat.h> should also be available.  */
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#ifdef __USE_XOPEN
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# include <sys/stat.h>
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#endif
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/* are on unistd.h */
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#if 0
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#ifdef  __USE_MISC
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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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#endif /* 0 */
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/* XPG wants the following symbols.  */
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#ifdef __USE_XOPEN              /* <stdio.h> has the same definitions.  */
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# define SEEK_SET       0       /* Seek from beginning of file.  */
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# define SEEK_CUR       1       /* Seek from current position.  */
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# define SEEK_END       2       /* Seek from end of file.  */
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#endif  /* XPG */
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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 __fcntl __P ((int __fd, int __cmd, ...));
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extern int fcntl __P ((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 __open __P ((__const char *__file, int __oflag, ...));
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#ifndef __USE_FILE_OFFSET64
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extern int open __P ((__const char *__file, int __oflag, ...));
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#else
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# ifdef __REDIRECT
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extern int __REDIRECT (open, __P ((__const char *__file, int __oflag, ...)),
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                       open64);
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# else
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#  define open open64
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# endif
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#endif
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#ifdef __USE_LARGEFILE64
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extern int open64 __P ((__const char *__file, int __oflag, ...));
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#endif
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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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#ifndef __USE_FILE_OFFSET64
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extern int creat __P ((__const char *__file, __mode_t __mode));
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#else
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# ifdef __REDIRECT
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extern int __REDIRECT (creat, __P ((__const char *__file, __mode_t __mode)),
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                       creat64);
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# else
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#  define creat creat64
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# endif
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#endif
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#ifdef __USE_LARGEFILE64
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extern int creat64 __P ((__const char *__file, __mode_t __mode));
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#endif
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#if !defined F_LOCK && (defined __USE_MISC || (defined __USE_XOPEN_EXTENDED \
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                                               && !defined __USE_POSIX))
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/* NOTE: These declarations also appear in <unistd.h>; be sure to keep both
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   files consistent.  Some systems have them there and some here, and some
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   software depends on the macros being defined without including both.  */
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/* `lockf' is a simpler interface to the locking facilities of `fcntl'.
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   LEN is always relative to the current file position.
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   The CMD argument is one of the following.  */
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# define F_ULOCK 0      /* Unlock a previously locked region.  */
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# define F_LOCK  1      /* Lock a region for exclusive use.  */
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# define F_TLOCK 2      /* Test and lock a region for exclusive use.  */
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# define F_TEST  3      /* Test a region for other processes locks.  */
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# ifndef __USE_FILE_OFFSET64
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extern int lockf __P ((int __fd, int __cmd, __off_t __len));
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# else
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# ifdef __REDIRECT
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extern int __REDIRECT (lockf, __P ((int __fd, int __cmd, __off64_t __len)),
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                       lockf64);
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# else
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#  define lockf lockf64
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# endif
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# endif
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# ifdef __USE_LARGEFILE64
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extern int lockf64 __P ((int __fd, int __cmd, __off64_t __len));
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# endif
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#endif
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__END_DECLS
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#endif /* fcntl.h  */