Update.
[glibc.git] / libio / __fsetlocking.c
blob0542e08dbecfb9be1d01056a1a65c9268c559207
1 /* Copyright (C) 2000, 2002 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
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.
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.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, write to the Free
16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
17 02111-1307 USA. */
19 #include <stdio_ext.h>
21 #undef __fsetlocking
23 int
24 __fsetlocking (FILE *fp, int type)
26 int result = ((fp->_flags & _IO_USER_LOCK)
27 ? FSETLOCKING_BYCALLER : FSETLOCKING_INTERNAL);
29 if (type != FSETLOCKING_QUERY)
31 fp->_flags &= ~_IO_USER_LOCK;
32 if (type == FSETLOCKING_BYCALLER)
33 fp->_flags |= _IO_USER_LOCK;
36 return result;
38 INTDEF(__fsetlocking)