mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-23 03:10:05 +00:00
43 lines
1.6 KiB
C
43 lines
1.6 KiB
C
|
/* Copyright (C) 1996, 1997, 2000 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
|
||
|
|
# error "Never include <bits/uio.h> directly; use <sys/uio.h> instead."
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
#include <sys/types.h>
|
||
|
|
|
||
|
|
|
||
|
|
/* Size of object which can be written atomically.
|
||
|
|
|
||
|
|
This macro has different values in different kernel versions. The
|
||
|
|
latest versions of ther kernel use 1024 and this is good choice. Since
|
||
|
|
the C library implementation of readv/writev is able to emulate the
|
||
|
|
functionality even if the currently running kernel does not support
|
||
|
|
this large value the readv/writev call will not fail because of this. */
|
||
|
|
#define UIO_MAXIOV 16
|
||
|
|
|
||
|
|
|
||
|
|
/* Structure for scatter/gather I/O. */
|
||
|
|
struct iovec
|
||
|
|
{
|
||
|
|
void *iov_base; /* Pointer to data. */
|
||
|
|
size_t iov_len; /* Length of data. */
|
||
|
|
};
|