Make unistd.h pre-c((-safe.
[glibc.git] / stdio-common / ftrylockfile.c
blob7bd3e9b53b44e36d2063f49d94d8d49057773ed4
1 /* Try locking I/O stream. Singlethreaded version.
2 Copyright (C) 1996, 1997, 2000, 2002 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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.
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.
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. */
20 #include <stdio.h>
22 #undef _IO_ftrylockfile
24 int
25 __ftrylockfile (FILE *stream)
27 /* Do nothing. Using this version does not do any locking. */
28 return 1;
30 weak_alias (__ftrylockfile, ftrylockfile);
31 weak_alias (__ftrylockfile, _IO_ftrylockfile)