mirror of https://github.com/acidanthera/audk.git
84 lines
3.0 KiB
C
84 lines
3.0 KiB
C
/*
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Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR>
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This program and the accompanying materials are licensed and made available
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under the terms and conditions of the BSD License that accompanies this
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distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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* Copyright (c) 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Chris Torek.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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NetBSD: fpurge.c,v 1.13 2003/08/07 16:43:24 agc Exp
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fpurge.c 8.1 (Berkeley) 6/4/93
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*/
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#include <LibConfig.h>
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#include <sys/EfiCdefs.h>
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#include <assert.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <wchar.h>
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#include "reentrant.h"
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#include "local.h"
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/*
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* fpurge: like fflush, but without writing anything: leave the
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* given FILE's buffer empty.
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*/
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int
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fpurge(fp)
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FILE *fp;
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{
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_DIAGASSERT(fp != NULL);
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if(fp == NULL) {
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errno = EINVAL;
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return (EOF);
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}
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if (fp->_flags == 0) {
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errno = EBADF;
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return (EOF);
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}
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FLOCKFILE(fp);
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if (HASUB(fp))
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FREEUB(fp);
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WCIO_FREE(fp);
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fp->_p = fp->_bf._base;
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fp->_r = 0;
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fp->_w = fp->_flags & (__SLBF|__SNBF) ? 0 : fp->_bf._size;
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FUNLOCKFILE(fp);
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return (0);
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}
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