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59 lines
1.9 KiB
C
59 lines
1.9 KiB
C
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/* 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, 1992 Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#ifndef _SYS_UIO_H
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#define _SYS_UIO_H 1
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#include <features.h>
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__BEGIN_DECLS
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#define __need_size_t
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#include <stddef.h>
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/* Structure describing a section of memory. */
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struct iovec
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{
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/* Starting address. */
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__ptr_t iov_base;
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/* Length in bytes. */
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size_t iov_len;
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};
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/* Read data from file descriptor FD, and put the result in the
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buffers described by VECTOR, which is a vector of COUNT `struct iovec's.
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The buffers are filled in the order specified.
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Operates just like `read' (see <unistd.h>) except that data are
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put in VECTOR instead of a contiguous buffer. */
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int readv __P ((int __fd, __const struct iovec * __vector, size_t __count));
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/* Write data pointed by the buffers described by VECTOR, which
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is a vector of COUNT `struct iovec's, to file descriptor FD.
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The data is written in the order specified.
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Operates just like `write' (see <unistd.h>) except that the data
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are taken from VECTOR instead of a contiguous buffer. */
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int writev __P ((int __fd, __const struct iovec * __vector, size_t __count));
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__END_DECLS
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#endif /* sys/uio.h */
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