/****************************************************************************
*
* Open Watcom Project
*
* Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
*
* ========================================================================
*
* This file contains Original Code and/or Modifications of Original
* Code as defined in and that are subject to the Sybase Open Watcom
* Public License version 1.0 (the 'License'). You may not use this file
* except in compliance with the License. BY USING THIS FILE YOU AGREE TO
* ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
* provided with the Original Code and Modifications, and is also
* available at www.sybase.com/developer/opensource.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
* ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
* NON-INFRINGEMENT. Please see the License for the specific language
* governing rights and limitations under the License.
*
* ========================================================================
*
* Description: WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE
* DESCRIBE IT HERE!
*
****************************************************************************/
#include "variety.h"
#include <stdio.h>
#include <errno.h>
//#if defined(__NT__)
//#elif defined(__OS2__)
//#else
// #include "tinyio.h"
//#endif
#include "iomode.h"
#include "fileacc.h"
#include "rtcheck.h"
#include "rtdata.h"
#include "seterrno.h"
//#include "defwin.h"
#include "qwrite.h"
/*
Use caution when setting the file pointer in a multithreaded
application. You must synchronize access to shared resources. For
example, an application whose threads share a file handle, update the
file pointer, and read from the file must protect this sequence by
using a critical section object or a mutex object.
*/
int __qwrite( int handle, const void *buffer, unsigned len )
{
int atomic;
#if defined(__NT__)
DWORD len_written;
HANDLE h;
int error;
#elif defined(__WARP__)
#elif defined(__OS2_286__)
#else
#endif
#if !defined(__NT__)
tiny_ret_t rc;
#endif
__handle_check( handle, -1 );
#if defined(__NT__)
h = __getOSHandle( handle );
#endif
atomic = 0;
if( __GetIOMode( handle ) & _APPEND )
{
_AccessFileH( handle );
atomic = 1;
#if defined(__NT__)
// if( SetFilePointer( h, 0, NULL, FILE_END ) == -1 )
// {
// error = GetLastError();
// _ReleaseFileH( handle );
// return( __set_errno_dos( error ) );
// }
#elif defined(__OS2__)
#else
rc = TinySeek( handle, 0L, SEEK_END );
#endif
#if !defined(__NT__)
if( TINY_ERROR( rc ) ) {
_ReleaseFileH( handle );
return( __set_errno_dos( TINY_INFO( rc ) ) );
}
#endif
}
#if defined(__NT__)
// if( !WriteFile( h, buffer, len, &len_written, NULL ) )
// {
// error = GetLastError();
// if( atomic == 1 ) {
// _ReleaseFileH( handle );
// }
// return( __set_errno_dos( error ) );
// }
#elif defined(__OS2__)
#elif defined(__WINDOWS_386__)
#else
rc = TinyWrite( handle, buffer, len );
len_written = TINY_LINFO( rc );
#endif
#if !defined(__NT__)
if( TINY_ERROR( rc ) ) {
if( atomic == 1 ) {
_ReleaseFileH( handle );
}
return( __set_errno_dos( TINY_INFO( rc ) ) );
}
#endif
if( len_written != len ) {
__set_errno( ENOSPC );
}
if( atomic == 1 )
{
_ReleaseFileH( handle );
}
return( len_written );
}