sysdeps/stub/lockfile.c

   1 /* lockfile - Handle locking and unlocking of stream.
   2    Copyright (C) 1996, 1997 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 Library General Public License as
   7    published by the Free Software Foundation; either version 2 of the
   8    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    Library General Public License for more details.
  14
  15    You should have received a copy of the GNU Library General Public
  16    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  17    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18    Boston, MA 02111-1307, USA.  */
  19
  20 typedef int FILE;
  21
  22
  23 void
  24 __internal_flockfile (FILE *stream)
  25 {
  26   /* Do nothing.  Using this version does not do any locking.  */
  27 }
  28 #ifdef USE_IN_LIBIO
  29 weak_alias (__internal_flockfile, _IO_flockfile)
  30 #else
  31 weak_alias (__internal_flockfile, __flockfile)
  32 #endif
  33 weak_alias (__internal_flockfile, flockfile);
  34
  35
  36 void
  37 __internal_funlockfile (FILE *stream)
  38 {
  39   /* Do nothing.  Using this version does not do any locking.  */
  40 }
  41 #ifdef USE_IN_LIBIO
  42 weak_alias (__internal_funlockfile, _IO_funlockfile)
  43 #else
  44 weak_alias (__internal_funlockfile, __funlockfile)
  45 #endif
  46 weak_alias (__internal_funlockfile, funlockfile);
  47
  48
  49 int
  50 __internal_ftrylockfile (FILE *stream)
  51 {
  52   /* Do nothing.  Using this version does not do any locking.  */
  53   return 1;
  54 }
  55 #ifdef USE_IN_LIBIO
  56 weak_alias (__internal_ftrylockfile, _IO_ftrylockfile)
  57 #else
  58 weak_alias (__internal_ftrylockfile, __ftrylockfile)
  59 #endif
  60 weak_alias (__internal_ftrylockfile, ftrylockfile);