mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-24 11:41:07 +00:00
125 lines
4.7 KiB
C
125 lines
4.7 KiB
C
/* Copyright (C) 1991,1992,1996-1999,2003,2009,2012
|
|
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 Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; 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 IOVEC, 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 IOVEC instead of a contiguous buffer.
|
|
|
|
This function is a cancellation point and therefore not marked with
|
|
__THROW. */
|
|
extern ssize_t readv (int __fd, const struct iovec *__iovec, int __count)
|
|
__wur;
|
|
|
|
/* Write data pointed by the buffers described by IOVEC, 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 IOVEC instead of a contiguous buffer.
|
|
|
|
This function is a cancellation point and therefore not marked with
|
|
__THROW. */
|
|
extern ssize_t writev (int __fd, const struct iovec *__iovec, int __count)
|
|
__wur;
|
|
|
|
|
|
#ifdef __USE_BSD
|
|
# ifndef __USE_FILE_OFFSET64
|
|
/* Read data from file descriptor FD at the given position OFFSET
|
|
without change the file pointer, and put the result in the buffers
|
|
described by IOVEC, which is a vector of COUNT 'struct iovec's.
|
|
The buffers are filled in the order specified. Operates just like
|
|
'pread' (see <unistd.h>) except that data are put in IOVEC instead
|
|
of a contiguous buffer.
|
|
|
|
This function is a cancellation point and therefore not marked with
|
|
__THROW. */
|
|
extern ssize_t preadv (int __fd, const struct iovec *__iovec, int __count,
|
|
__off_t __offset) __wur;
|
|
|
|
/* Write data pointed by the buffers described by IOVEC, which is a
|
|
vector of COUNT 'struct iovec's, to file descriptor FD at the given
|
|
position OFFSET without change the file pointer. The data is
|
|
written in the order specified. Operates just like 'pwrite' (see
|
|
<unistd.h>) except that the data are taken from IOVEC instead of a
|
|
contiguous buffer.
|
|
|
|
This function is a cancellation point and therefore not marked with
|
|
__THROW. */
|
|
extern ssize_t pwritev (int __fd, const struct iovec *__iovec, int __count,
|
|
__off_t __offset) __wur;
|
|
# else
|
|
# ifdef __REDIRECT
|
|
extern ssize_t __REDIRECT (preadv, (int __fd, const struct iovec *__iovec,
|
|
int __count, __off64_t __offset),
|
|
preadv64) __wur;
|
|
extern ssize_t __REDIRECT (pwritev, (int __fd, const struct iovec *__iovec,
|
|
int __count, __off64_t __offset),
|
|
pwritev64) __wur;
|
|
# else
|
|
# define preadv preadv64
|
|
# define pwritev pwritev64
|
|
# endif
|
|
# endif
|
|
|
|
# ifdef __USE_LARGEFILE64
|
|
/* Read data from file descriptor FD at the given position OFFSET
|
|
without change the file pointer, and put the result in the buffers
|
|
described by IOVEC, which is a vector of COUNT 'struct iovec's.
|
|
The buffers are filled in the order specified. Operates just like
|
|
'pread' (see <unistd.h>) except that data are put in IOVEC instead
|
|
of a contiguous buffer.
|
|
|
|
This function is a cancellation point and therefore not marked with
|
|
__THROW. */
|
|
extern ssize_t preadv64 (int __fd, const struct iovec *__iovec, int __count,
|
|
__off64_t __offset) __wur;
|
|
|
|
/* Write data pointed by the buffers described by IOVEC, which is a
|
|
vector of COUNT 'struct iovec's, to file descriptor FD at the given
|
|
position OFFSET without change the file pointer. The data is
|
|
written in the order specified. Operates just like 'pwrite' (see
|
|
<unistd.h>) except that the data are taken from IOVEC instead of a
|
|
contiguous buffer.
|
|
|
|
This function is a cancellation point and therefore not marked with
|
|
__THROW. */
|
|
extern ssize_t pwritev64 (int __fd, const struct iovec *__iovec, int __count,
|
|
__off64_t __offset) __wur;
|
|
# endif
|
|
#endif /* Use BSD */
|
|
|
|
__END_DECLS
|
|
|
|
#endif /* sys/uio.h */
|