rom/dos/internalflush.c

   1 /*
   2     Copyright © 2002-2007, The AROS Development Team. All rights reserved.
   3     $Id$
   4 */
   5
   6 #include <exec/types.h>
   7 #include <proto/dos.h>
   8 #include <aros/debug.h>
   9
  10 #include "dos_intern.h"
  11
  12 LONG InternalFlush( struct FileHandle *fh, struct DosLibrary *DOSBase )
  13 {
  14     LONG position;
  15
  16     /* Make sure the input parameters are sane. */
  17     ASSERT_VALID_PTR( fh );
  18     ASSERT_VALID_PTR( BADDR(fh->fh_Buf) );
  19
  20     ASSERT(fh->fh_End >  0);
  21     ASSERT(fh->fh_Pos >= 0);
  22     ASSERT(fh->fh_Pos <= fh->fh_End );
  23
  24     /* Write the data, in many pieces if the first one isn't enough. */
  25     position = 0;
  26
  27     while( position < fh->fh_Pos )
  28     {
  29         LONG size;
  30
  31         size = Write( MKBADDR(fh), BADDR(fh->fh_Buf) + position, fh->fh_Pos - position );
  32
  33         /* An error happened? No success. */
  34         if( size < 0 )
  35         {
  36             fh->fh_Flags &= ~FHF_WRITE;
  37
  38             return FALSE;
  39         }
  40
  41         position += size;
  42     }
  43
  44     /* Reset the buffer. */
  45     fh->fh_Pos = 0;
  46
  47     return TRUE;
  48 }