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  1. /****************************************************************************
  2. *
  3. *                            Open Watcom Project
  4. *
  5. *    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
  6. *
  7. *  ========================================================================
  8. *
  9. *    This file contains Original Code and/or Modifications of Original
  10. *    Code as defined in and that are subject to the Sybase Open Watcom
  11. *    Public License version 1.0 (the 'License'). You may not use this file
  12. *    except in compliance with the License. BY USING THIS FILE YOU AGREE TO
  13. *    ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
  14. *    provided with the Original Code and Modifications, and is also
  15. *    available at www.sybase.com/developer/opensource.
  16. *
  17. *    The Original Code and all software distributed under the License are
  18. *    distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  19. *    EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
  20. *    ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
  21. *    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
  22. *    NON-INFRINGEMENT. Please see the License for the specific language
  23. *    governing rights and limitations under the License.
  24. *
  25. *  ========================================================================
  26. *
  27. * Description:  WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE
  28. *               DESCRIBE IT HERE!
  29. *
  30. ****************************************************************************/
  31.  
  32.  
  33. #include "variety.h"
  34. #include <windows.h>
  35. #include <unistd.h>
  36. #include "iomode.h"
  37. #include "fileacc.h"
  38. #include "rtcheck.h"
  39. #include "seterrno.h"
  40. #include "lseek.h"
  41. #include "kolibri.h"
  42.  
  43. typedef struct
  44. {
  45.   char     *name;
  46.   unsigned int offset;
  47. }__file_handle;
  48.  
  49. _WCRTLINK int chsize( int hid, long size )
  50. {
  51.     long        curOffset;
  52.     long        rc;
  53.     __file_handle *fh;
  54.  
  55.     __handle_check( hid, -1 );
  56.     fh = (__file_handle*) __getOSHandle( hid );
  57.  
  58.     _AccessFileH( hid );
  59.    
  60.     curOffset = __lseek( hid, 0L, SEEK_CUR );     /* get current offset */
  61.  
  62.     rc = set_file_size(fh->name, size);
  63.      
  64.     if(rc !=0 )
  65.     {
  66.       _ReleaseFileH( hid );
  67.       if(rc==8)
  68.         __set_errno( ENOSPC );
  69.       else
  70.         __set_errno( EACCES );
  71.       return -1;
  72.     };    
  73.  
  74.     if( curOffset > size ) curOffset = size;
  75.     curOffset = __lseek( hid, curOffset, SEEK_SET );
  76.     _ReleaseFileH( hid );
  77.     if( curOffset == -1 ) {
  78.         __set_errno(ENOSPC);
  79.         return( -1 );
  80.     }
  81.     return( 0 );
  82. }
  83.