sysdeps/stub/lockfile.c

   1 /* lockfile - Handle locking and unlocking of stream.
   2 Copyright (C) 1996 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
  17 not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18 Boston, MA 02111-1307, USA.  */
  19
  20 typedef FILE;
  21
  22
  23 void
  24 __flockfile (FILE *stream)
  25 {
  26   /* Do nothing.  Using this version does not do any locking.  */
  27 }
  28 #ifdef USE_IN_LIBIO
  29 strong_alias (__flockfile, _IO_flockfile)
  30 #endif
  31 weak_alias (__flockfile, flockfile);
  32
  33
  34 void
  35 __funlockfile (FILE *stream)
  36 {
  37   /* Do nothing.  Using this version does not do any locking.  */
  38 }
  39 #ifdef USE_IN_LIBIO
  40 strong_alias (__funlockfile, _IO_funlockfile)
  41 #endif
  42 weak_alias (__funlockfile, funlockfile);
  43
  44
  45 int
  46 __ftrylockfile (FILE *stream)
  47 {
  48   /* Do nothing.  Using this version does not do any locking.  */
  49   return 1;
  50 }
  51 #ifdef USE_IN_LIBIO
  52 strong_alias (__ftrylockfile, _IO_ftrylockfile)
  53 #endif
  54 weak_alias (__ftrylockfile, ftrylockfile);