11dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project/* $OpenBSD: fwrite.c,v 1.5 2005/08/08 08:05:36 espie Exp $ */ 21dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project/*- 31dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * Copyright (c) 1990, 1993 41dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * The Regents of the University of California. All rights reserved. 51dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * 61dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * This code is derived from software contributed to Berkeley by 71dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * Chris Torek. 81dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * 91dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * Redistribution and use in source and binary forms, with or without 101dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * modification, are permitted provided that the following conditions 111dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * are met: 121dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * 1. Redistributions of source code must retain the above copyright 131dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * notice, this list of conditions and the following disclaimer. 141dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * 2. Redistributions in binary form must reproduce the above copyright 151dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * notice, this list of conditions and the following disclaimer in the 161dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * documentation and/or other materials provided with the distribution. 171dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * 3. Neither the name of the University nor the names of its contributors 181dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * may be used to endorse or promote products derived from this software 191dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * without specific prior written permission. 201dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * 211dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 221dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 231dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 241dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 251dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 261dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 271dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 281dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 291dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 301dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 311dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * SUCH DAMAGE. 321dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project */ 331dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 341dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#include <stdio.h> 351dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#include "local.h" 361dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project#include "fvwrite.h" 371dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 381dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project/* 391dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * Write `count' objects (each size `size') from memory to the given file. 401dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * Return the number of whole objects written. 411dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project */ 421dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectsize_t 431dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Projectfwrite(const void *buf, size_t size, size_t count, FILE *fp) 441dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project{ 451dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project size_t n; 461dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project struct __suio uio; 471dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project struct __siov iov; 481dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 491dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project iov.iov_base = (void *)buf; 501dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project uio.uio_resid = iov.iov_len = n = count * size; 511dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project uio.uio_iov = &iov; 521dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project uio.uio_iovcnt = 1; 531dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project 541dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project /* 551dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * The usual case is success (__sfvwrite returns 0); 561dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * skip the divide if this happens, since divides are 571dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project * generally slow and since this occurs whenever size==0. 581dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project */ 591dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project if (__sfvwrite(fp, &uio) == 0) 601dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return (count); 611dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project return ((n - uio.uio_resid) / size); 621dc9e472e19acfe6dc7f41e429236e7eef7ceda1The Android Open Source Project} 63