123 lines
3.7 KiB
C
123 lines
3.7 KiB
C
/****************************************************************************
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*
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* Open Watcom Project
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*
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* Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
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*
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* ========================================================================
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*
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* This file contains Original Code and/or Modifications of Original
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* Code as defined in and that are subject to the Sybase Open Watcom
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* Public License version 1.0 (the 'License'). You may not use this file
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* except in compliance with the License. BY USING THIS FILE YOU AGREE TO
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* ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
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* provided with the Original Code and Modifications, and is also
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* available at www.sybase.com/developer/opensource.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
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* ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
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* NON-INFRINGEMENT. Please see the License for the specific language
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* governing rights and limitations under the License.
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*
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* ========================================================================
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*
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* Description: Platform independent fclose() implementation.
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*
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****************************************************************************/
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#include "variety.h"
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#include <stdio.h>
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#include <unistd.h>
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#include <errno.h>
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#include "liballoc.h"
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#include "mf.h"
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#include <string.h>
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#include "fileacc.h"
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#include "tmpfname.h"
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#include "rtdata.h"
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#include "lseek.h"
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#include "streamio.h"
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#include "close.h"
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#include "flush.h"
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#ifndef __UNIX__
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void (*__RmTmpFileFn)( FILE *fp );
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#endif
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int __doclose( FILE *fp, int close_handle )
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{
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int ret;
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if( fp->_flag == 0 ) {
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return( -1 ); /* file already closed */
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}
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ret = 0;
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if( fp->_flag & _DIRTY ) {
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ret = __flush( fp );
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}
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_AccessFile( fp );
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/*
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* 02-nov-92 G.Turcotte Syncronize buffer pointer with the file pointer
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* IEEE Std 1003.1-1988 B.8.2.3.2
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* 03-nov-03 B.Oldeman Inlined ftell; we already know the buffer isn't
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* dirty (because of the flush), so only a "get" applies
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*/
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if( fp->_cnt != 0 ) { /* if something in buffer */
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__lseek( fileno( fp ), -fp->_cnt, SEEK_CUR );
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}
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if( close_handle ) {
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#if defined( __UNIX__ ) || defined( __NETWARE__ )
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// we don't get to implement the close function on these systems
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ret |= close( fileno( fp ) );
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#else
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ret |= __close( fileno( fp ) );
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#endif
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}
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if( fp->_flag & _BIGBUF ) { /* if we allocated the buffer */
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lib_free( _FP_BASE(fp) );
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_FP_BASE(fp) = NULL;
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}
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#ifndef __UNIX__
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/* this never happens under UNIX */
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if( fp->_flag & _TMPFIL ) { /* if this is a temporary file */
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__RmTmpFileFn( fp );
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}
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#endif
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_ReleaseFile( fp );
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return( ret );
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}
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int __shutdown_stream( FILE *fp, int close_handle )
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{
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int ret;
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ret = __doclose( fp, close_handle );
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__freefp( fp );
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return( ret );
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}
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_WCRTLINK int fclose( FILE *fp )
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{
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__stream_link *link;
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_AccessIOB();
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link = _RWD_ostream;
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for( ;; ) {
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if( link == NULL ) {
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_ReleaseIOB();
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return( -1 ); /* file not open */
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}
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if( link->stream == fp ) break;
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link = link->next;
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}
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_ReleaseIOB();
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return( __shutdown_stream( fp, 1 ) );
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}
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