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-/** @file
- Implementation of fwrite as declared in <stdio.h>.
-
- Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR>
- This program and the accompanying materials are licensed and made available
- under the terms and conditions of the BSD License that accompanies this
- distribution. The full text of the license may be found at
- http://opensource.org/licenses/bsd-license.
-
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
-
- Copyright (c) 1990, 1993
- The Regents of the University of California. All rights reserved.
-
- This code is derived from software contributed to Berkeley by
- Chris Torek.
-
- Redistribution and use in source and binary forms, with or without
- modification, are permitted provided that the following conditions
- are met:
- - Redistributions of source code must retain the above copyright
- notice, this list of conditions and the following disclaimer.
- - Redistributions in binary form must reproduce the above copyright
- notice, this list of conditions and the following disclaimer in the
- documentation and/or other materials provided with the distribution.
- - Neither the name of the University nor the names of its contributors
- may be used to endorse or promote products derived from this software
- without specific prior written permission.
-
- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
- LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- POSSIBILITY OF SUCH DAMAGE.
-
- NetBSD: fwrite.c,v 1.16 2005/11/29 03:12:00 christos Exp
- fwrite.c 8.1 (Berkeley) 6/4/93
-**/
-#include <LibConfig.h>
-
-#include <assert.h>
-#include <errno.h>
-#include <stdio.h>
-#include "reentrant.h"
-#include "local.h"
-#include "fvwrite.h"
-
-/*
- * Write `count' objects (each size `size') from memory to the given file.
- * Return the number of whole objects written.
- */
-size_t
-fwrite(const void *buf, size_t size, size_t count, FILE *fp)
-{
- size_t n;
- struct __suio uio;
- struct __siov iov;
-
- _DIAGASSERT(fp != NULL);
- if(fp == NULL) {
- errno = EINVAL;
- return (0);
- }
-
- /*
- * SUSv2 requires a return value of 0 for a count or a size of 0.
- */
- if ((n = count * size) == 0)
- return (0);
- _DIAGASSERT(buf != NULL);
-
- iov.iov_base = __UNCONST(buf);
- uio.uio_resid = (int)(iov.iov_len = n);
- uio.uio_iov = &iov;
- uio.uio_iovcnt = 1;
-
- /*
- * The usual case is success (__sfvwrite returns 0);
- * skip the divide if this happens, since divides are
- * generally slow and since this occurs whenever size==0.
- */
- FLOCKFILE(fp);
- if (__sfvwrite(fp, &uio) != 0)
- count = ((n - uio.uio_resid) / size);
- FUNLOCKFILE(fp);
- return (count);
-}