winsup/cygwin/fhandler/null.cc

   1 /* null.cc.  /dev/null specifics.
   2
   3 This file is part of Cygwin.
   4
   5 This software is a copyrighted work licensed under the terms of the
   6 Cygwin license.  Please consult the file "CYGWIN_LICENSE" for
   7 details. */
   8
   9 #include "winsup.h"
  10 #include "path.h"
  11 #include "fhandler.h"
  12
  13 fhandler_dev_null::fhandler_dev_null () :
  14         fhandler_base ()
  15 {
  16 }
  17
  18 ssize_t
  19 fhandler_dev_null::write (const void *ptr, size_t len)
  20 {
  21   /* Shortcut.  This also fixes a problem with the NUL device on x86_64:
  22      If you write > 4 GB in a single attempt, the bytes written returned
  23      from by is numBytes & 0xffffffff. */
  24   return len;
  25 }
  26