1/* Copyright (C) 2000-2018 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <http://www.gnu.org/licenses/>. */
17
18#include <stdio_ext.h>
19
20#undef __fsetlocking
21
22int
23__fsetlocking (FILE *fp, int type)
24{
25 int result = ((fp->_flags & _IO_USER_LOCK)
26 ? FSETLOCKING_BYCALLER : FSETLOCKING_INTERNAL);
27
28 if (type != FSETLOCKING_QUERY)
29 {
30 fp->_flags &= ~_IO_USER_LOCK;
31 if (type == FSETLOCKING_BYCALLER)
32 fp->_flags |= _IO_USER_LOCK;
33 }
34
35 return result;
36}
37libc_hidden_def (__fsetlocking)
38