+++ /dev/null
-/** @file\r
- Implementation of fflush 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: fflush.c,v 1.15 2003/08/07 16:43:22 agc Exp\r
- fflush.c 8.1 (Berkeley) 6/4/93\r
-**/\r
-#include <LibConfig.h>\r
-\r
-#include <assert.h>\r
-#include <errno.h>\r
-#include <stdio.h>\r
-#include "reentrant.h"\r
-#include "local.h"\r
-\r
-#ifdef _REENTRANT\r
-extern rwlock_t __sfp_lock;\r
-#endif\r
-\r
-/* Flush a single file, or (if fp is NULL) all files. */\r
-int\r
-fflush(FILE *fp)\r
-{\r
- int r;\r
-\r
- if (fp == NULL) {\r
- rwlock_rdlock(&__sfp_lock);\r
- r = _fwalk(__sflush);\r
- rwlock_unlock(&__sfp_lock);\r
- return r;\r
- }\r
-\r
- FLOCKFILE(fp);\r
- if ((fp->_flags & (__SWR | __SRW)) == 0) {\r
- errno = EBADF;\r
- r = EOF;\r
- } else {\r
- r = __sflush(fp);\r
- }\r
- FUNLOCKFILE(fp);\r
- return r;\r
-}\r
-\r
-int\r
-__sflush(FILE *fp)\r
-{\r
- unsigned char *p;\r
- INT64 n;\r
- int t;\r
-\r
- _DIAGASSERT(fp != NULL);\r
- if(fp == NULL) {\r
- errno = EINVAL;\r
- return (EOF);\r
- }\r
-\r
- t = fp->_flags;\r
- if ((t & __SWR) == 0)\r
- return (0);\r
-\r
- if ((p = fp->_bf._base) == NULL)\r
- return (0);\r
-\r
- n = fp->_p - p; /* write this much */\r
-\r
- /*\r
- * Set these immediately to avoid problems with longjmp and to allow\r
- * exchange buffering (via setvbuf) in user write function.\r
- */\r
- fp->_p = p;\r
- fp->_w = t & (__SLBF|__SNBF) ? 0 : fp->_bf._size;\r
-\r
- for (; n > 0; n -= t, p += t) {\r
- t = (*fp->_write)(fp->_cookie, (char *)p, (int)n);\r
- if (t <= 0) {\r
- fp->_flags |= __SERR;\r
- return (EOF);\r
- }\r
- }\r
- return (0);\r
-}\r