glibc/misc/sys/uio.h

/* Copyright (C) 1991, 1992, 1996, 1997 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.  */

#ifndef _SYS_UIO_H
#define _SYS_UIO_H	1

#include <features.h>

#include <sys/types.h>

__BEGIN_DECLS

/* This file defines `struct iovec'.  */
#include <bits/uio.h>


/* Read data from file descriptor FD, and put the result in the
   buffers described by VECTOR, which is a vector of COUNT `struct iovec's.
   The buffers are filled in the order specified.
   Operates just like `read' (see <unistd.h>) except that data are
   put in VECTOR instead of a contiguous buffer.  */
extern ssize_t __readv __P ((int __fd, __const struct iovec *__vector,
			     int __count));
extern ssize_t readv __P ((int __fd, __const struct iovec *__vector,
			   int __count));

/* Write data pointed by the buffers described by VECTOR, which
   is a vector of COUNT `struct iovec's, to file descriptor FD.
   The data is written in the order specified.
   Operates just like `write' (see <unistd.h>) except that the data
   are taken from VECTOR instead of a contiguous buffer.  */
extern ssize_t __writev __P ((int __fd, __const struct iovec *__vector,
			      int __count));
extern ssize_t writev __P ((int __fd, __const struct iovec *__vector,
			    int __count));


__END_DECLS

#endif /* sys/uio.h */