sysdeps/htl/ftrylockfile.c

   1 /* Try locking I/O stream.  Hurd version
   2    Copyright (C) 2002-2018 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, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <errno.h>
  20 #include <pthread.h>
  21 #include <stdio.h>
  22 #include <stdio-lock.h>
  23
  24
  25 int
  26 __ftrylockfile (FILE *stream)
  27 {
  28 #ifdef SHARED
  29   return __libc_ptf_call (_IO_ftrylockfile, (stream), 0);
  30 #else
  31   return 0;
  32 #endif
  33 }
  34 weak_alias (__ftrylockfile, _IO_ftrylockfile)
  35 weak_alias (__ftrylockfile, ftrylockfile)