From 9cee42f10dbc5b33866ff137b926a74abd7c1a5b Mon Sep 17 00:00:00 2001 From: Eric Andersen Date: Fri, 1 Mar 2002 20:46:26 +0000 Subject: Major rework of the include files to eliminate redundancy and to better support each arch. This is a really big patch... -Erik --- libc/sysdeps/linux/common/bits/uio.h | 46 ++++++++++++++++++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 libc/sysdeps/linux/common/bits/uio.h (limited to 'libc/sysdeps/linux/common/bits/uio.h') diff --git a/libc/sysdeps/linux/common/bits/uio.h b/libc/sysdeps/linux/common/bits/uio.h new file mode 100644 index 000000000..84b4805fe --- /dev/null +++ b/libc/sysdeps/linux/common/bits/uio.h @@ -0,0 +1,46 @@ +/* Copyright (C) 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 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 +# error "Never include directly; use instead." +#endif + + +#include + + +/* We should normally use the Linux kernel header file to define this + type and macros but this calls for trouble because of the header + includes other kernel headers. */ + +/* 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 1024 + + +/* Structure for scatter/gather I/O. */ +struct iovec + { + void *iov_base; /* Pointer to data. */ + size_t iov_len; /* Length of data. */ + }; -- cgit v1.2.3