mirror of
https://sourceware.org/git/glibc.git
synced 2025-11-03 20:53:13 +03:00
131 lines
4.5 KiB
C
131 lines
4.5 KiB
C
/* Copyright (C) 1991,92,94,95,96,97,98,99 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 <bits/fcntl.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 <bits/fcntl.h>
|
|
|
|
/* For XPG all symbols from <sys/stat.h> should also be available. */
|
|
#ifdef __USE_XOPEN
|
|
# include <sys/stat.h>
|
|
#endif
|
|
|
|
#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. */
|
|
|
|
/* XPG wants the following symbols. */
|
|
#ifdef __USE_XOPEN /* <stdio.h> has the same definitions. */
|
|
# define SEEK_SET 0 /* Seek from beginning of file. */
|
|
# define SEEK_CUR 1 /* Seek from current position. */
|
|
# define SEEK_END 2 /* Seek from end of file. */
|
|
#endif /* XPG */
|
|
|
|
/* Do the file control operation described by CMD on FD.
|
|
The remaining arguments are interpreted depending on CMD. */
|
|
extern int __fcntl (int __fd, int __cmd, ...) __THROW;
|
|
extern int fcntl (int __fd, int __cmd, ...) __THROW;
|
|
|
|
/* 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 (__const char *__file, int __oflag, ...) __THROW;
|
|
#ifndef __USE_FILE_OFFSET64
|
|
extern int open (__const char *__file, int __oflag, ...) __THROW;
|
|
#else
|
|
# ifdef __REDIRECT
|
|
extern int __REDIRECT (open, (__const char *__file, int __oflag, ...) __THROW,
|
|
open64);
|
|
# else
|
|
# define open open64
|
|
# endif
|
|
#endif
|
|
#ifdef __USE_LARGEFILE64
|
|
extern int open64 (__const char *__file, int __oflag, ...) __THROW;
|
|
#endif
|
|
|
|
/* Create and open FILE, with mode MODE.
|
|
This takes an `int' MODE argument because that is
|
|
what `mode_t' will be widened to. */
|
|
#ifndef __USE_FILE_OFFSET64
|
|
extern int creat (__const char *__file, __mode_t __mode) __THROW;
|
|
#else
|
|
# ifdef __REDIRECT
|
|
extern int __REDIRECT (creat, (__const char *__file, __mode_t __mode) __THROW,
|
|
creat64);
|
|
# else
|
|
# define creat creat64
|
|
# endif
|
|
#endif
|
|
#ifdef __USE_LARGEFILE64
|
|
extern int creat64 (__const char *__file, __mode_t __mode) __THROW;
|
|
#endif
|
|
|
|
#if !defined F_LOCK && (defined __USE_MISC || (defined __USE_XOPEN_EXTENDED \
|
|
&& !defined __USE_POSIX))
|
|
/* 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. */
|
|
|
|
# ifndef __USE_FILE_OFFSET64
|
|
extern int lockf (int __fd, int __cmd, __off_t __len) __THROW;
|
|
# else
|
|
# ifdef __REDIRECT
|
|
extern int __REDIRECT (lockf, (int __fd, int __cmd, __off64_t __len) __THROW,
|
|
lockf64);
|
|
# else
|
|
# define lockf lockf64
|
|
# endif
|
|
# endif
|
|
# ifdef __USE_LARGEFILE64
|
|
extern int lockf64 (int __fd, int __cmd, __off64_t __len) __THROW;
|
|
# endif
|
|
#endif
|
|
|
|
__END_DECLS
|
|
|
|
#endif /* fcntl.h */
|