+++ /dev/null
-/** @file\r
- Implementation of fread as declared in <stdio.h>.\r
-\r
- Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR>\r
- This program and the accompanying materials are licensed and made available\r
- under the terms and conditions of the BSD License that accompanies this\r
- distribution. The full text of the license may be found at\r
- http://opensource.org/licenses/bsd-license.\r
-\r
- THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
- WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
-\r
- Copyright (c) 1990, 1993\r
- The Regents of the University of California. All rights reserved.\r
-\r
- This code is derived from software contributed to Berkeley by\r
- Chris Torek.\r
-\r
- Redistribution and use in source and binary forms, with or without\r
- modification, are permitted provided that the following conditions\r
- are met:\r
- - Redistributions of source code must retain the above copyright\r
- notice, this list of conditions and the following disclaimer.\r
- - Redistributions in binary form must reproduce the above copyright\r
- notice, this list of conditions and the following disclaimer in the\r
- documentation and/or other materials provided with the distribution.\r
- - Neither the name of the University nor the names of its contributors\r
- may be used to endorse or promote products derived from this software\r
- without specific prior written permission.\r
-\r
- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"\r
- AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE\r
- IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE\r
- ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE\r
- LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR\r
- CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF\r
- SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS\r
- INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN\r
- CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)\r
- ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE\r
- POSSIBILITY OF SUCH DAMAGE.\r
-\r
- NetBSD: fread.c,v 1.16 2003/08/07 16:43:25 agc Exp\r
- fread.c 8.2 (Berkeley) 12/11/93\r
-**/\r
-#include <LibConfig.h>\r
-\r
-#include <assert.h>\r
-#include <errno.h>\r
-#include <stdio.h>\r
-#include <string.h>\r
-#include "reentrant.h"\r
-#include "local.h"\r
-\r
-size_t\r
-fread(void *buf, size_t size, size_t count, FILE *fp)\r
-{\r
- size_t resid;\r
- char *p;\r
- int r;\r
- size_t total;\r
-\r
- _DIAGASSERT(fp != NULL);\r
- if(fp == NULL) {\r
- errno = EINVAL;\r
- return (0);\r
- }\r
- /*\r
- * The ANSI standard requires a return value of 0 for a count\r
- * or a size of 0. Whilst ANSI imposes no such requirements on\r
- * fwrite, the SUSv2 does.\r
- */\r
- if ((resid = count * size) == 0)\r
- return (0);\r
-\r
- _DIAGASSERT(buf != NULL);\r
-\r
- FLOCKFILE(fp);\r
- if (fp->_r < 0)\r
- fp->_r = 0;\r
- total = resid;\r
- p = buf;\r
- while (resid > (size_t)(r = fp->_r)) {\r
- (void)memcpy((void *)p, (void *)fp->_p, (size_t)r);\r
- fp->_p += r;\r
- /* fp->_r = 0 ... done in __srefill */\r
- p += r;\r
- resid -= r;\r
- if (__srefill(fp)) {\r
- /* no more input: return partial result */\r
- FUNLOCKFILE(fp);\r
- return ((total - resid) / size);\r
- }\r
- }\r
- (void)memcpy((void *)p, (void *)fp->_p, resid);\r
- fp->_r -= (int)resid;\r
- fp->_p += resid;\r
- FUNLOCKFILE(fp);\r
- return (count);\r
-}\r