92 lines
3.1 KiB
C
92 lines
3.1 KiB
C
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/****************************************************************************
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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: WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE
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* DESCRIBE IT HERE!
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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 <errno.h>
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#if defined(__NT__)
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// #include <windows.h>
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#endif
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#include <unistd.h>
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#include "fcntl.h"
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#include "dos.h"
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#include "dosfunc.h"
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#include "fileacc.h"
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#include "rtcheck.h"
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#include "rtdata.h"
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#include "iomode.h"
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#include "seterrno.h"
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_WCRTLINK int setmode( int handle, int mode )
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{
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unsigned iomode_flags;
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unsigned old_mode;
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__stream_link *link;
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FILE *fp;
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__handle_check( handle, -1 );
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iomode_flags = __GetIOMode( handle );
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if( iomode_flags == 0 ) {
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__set_errno( EBADF );
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return( -1 );
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}
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old_mode = (iomode_flags & _BINARY) ? O_BINARY : O_TEXT;
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if( mode != old_mode ) {
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if( mode == O_BINARY || mode == O_TEXT ) {
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iomode_flags &= ~ _BINARY;
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if( mode == O_BINARY ) {
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iomode_flags |= _BINARY;
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}
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__SetIOMode( handle, iomode_flags );
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_AccessFileH( handle );
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for( link = _RWD_ostream; link != NULL; link = link->next ) {
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fp = link->stream;
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if( fp->_flag != 0 ) { /* if file is open */
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if( fileno( fp ) == handle ) {
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fp->_flag &= ~ _BINARY;
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if( mode == O_BINARY ) {
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fp->_flag |= _BINARY;
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}
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break;
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}
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}
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}
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_ReleaseFileH( handle );
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} else {
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__set_errno( EINVAL );
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old_mode = -1;
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}
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}
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return( old_mode );
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}
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