mirror of
git://sourceware.org/git/glibc.git
synced 2024-11-27 03:41:23 +08:00
82 lines
3.2 KiB
C
82 lines
3.2 KiB
C
/* Copyright (C) 1991, 92, 94, 95, 96 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., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
/*
|
|
* POSIX Standard: 6.5 File Control Operations <fcntl.h>
|
|
*/
|
|
|
|
#ifndef _FCNTL_H
|
|
|
|
#define _FCNTL_H 1
|
|
#include <features.h>
|
|
|
|
/* This must be early so <fcntlbits.h> can define types winningly. */
|
|
__BEGIN_DECLS
|
|
|
|
/* Get the definitions of O_*, F_*, FD_*: all the
|
|
numbers and flag bits for `open', `fcntl', et al. */
|
|
#include <fcntlbits.h>
|
|
|
|
#ifdef __USE_MISC
|
|
#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. */
|
|
|
|
/* Do the file control operation described by CMD on FD.
|
|
The remaining arguments are interpreted depending on CMD. */
|
|
extern int __fcntl __P ((int __fd, int __cmd, ...));
|
|
extern int fcntl __P ((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 __open __P ((__const char *__file, int __oflag, ...));
|
|
extern int open __P ((__const char *__file, int __oflag, ...));
|
|
|
|
/* 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 creat __P ((__const char *__file, __mode_t __mode));
|
|
|
|
#if !defined(F_LOCK) && (defined(__USE_MISC) || defined(__USE_XOPEN_EXTENDED))
|
|
/* NOTE: These declarations also appear in <unistd.h>; be sure to keep both
|
|
files consistent. Some systems have them there and some here, and some
|
|
software depends on the macros being defined without including both. */
|
|
|
|
/* `lockf' is a simpler interface to the locking facilities of `fcntl'.
|
|
LEN is always relative to the current file position.
|
|
The CMD argument is one of the following. */
|
|
|
|
#define F_ULOCK 0 /* Unlock a previously locked region. */
|
|
#define F_LOCK 1 /* Lock a region for exclusive use. */
|
|
#define F_TLOCK 2 /* Test and lock a region for exclusive use. */
|
|
#define F_TEST 3 /* Test a region for other processes locks. */
|
|
|
|
extern int lockf __P ((int __fd, int __cmd, __off_t __len));
|
|
#endif
|
|
|
|
__END_DECLS
|
|
|
|
#endif /* fcntl.h */
|