rt/aio_cancel.c

   1 /* Cancel requests associated with given file descriptor.  Stub version.
   2    Copyright (C) 2001 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20
  21 /* We use an UGLY hack to prevent gcc from finding us cheating.  The
  22    implementation of aio_cancel and aio_cancel64 are identical and so
  23    we want to avoid code duplication by using aliases.  But gcc sees
  24    the different parameter lists and prints a warning.  We define here
  25    a function so that aio_cancel64 has no prototype.  */
  26 #define aio_cancel64 XXX
  27 #include <aio.h>
  28 /* And undo the hack.  */
  29 #undef aio_cancel64
  30
  31 #include <errno.h>
  32
  33 int
  34 aio_cancel (int fildes, struct aiocb *aiocbp)
  35 {
  36   __set_errno (ENOSYS);
  37   return -1;
  38 }
  39
  40 weak_alias (aio_cancel, aio_cancel64)
  41
  42 stub_warning (aio_cancel)
  43 stub_warning (aio_cancel64)
  44 #include <stub-tag.h>