xref: /freebsd/lib/libc/stdio/_flock_stub.c (revision a8445737e740901f5f2c8d24c12ef7fc8b00134e)
1 /*
2  * Copyright (c) 1998 John Birrell <jb@cimlogic.com.au>.
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  * 3. All advertising materials mentioning features or use of this software
14  *    must display the following acknowledgement:
15  *	This product includes software developed by John Birrell.
16  * 4. Neither the name of the author nor the names of any co-contributors
17  *    may be used to endorse or promote products derived from this software
18  *    without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30  * SUCH DAMAGE.
31  *
32  * $Id: _flock_stub.c,v 1.1 1998/04/11 07:40:41 jb Exp $
33  *
34  */
35 
36 #include <stdio.h>
37 
38 /* Don't build this in libc_r, just libc: */
39 #ifndef	_THREAD_SAFE
40 /*
41  * Declare weak references in case the application is not linked
42  * with libpthread.
43  */
44 #pragma weak flockfile=_flockfile_stub
45 #pragma weak _flockfile_debug=_flockfile_debug_stub
46 #pragma weak ftrylockfile=_ftrylockfile_stub
47 #pragma weak funlockfile=_funlockfile_stub
48 
49 /*
50  * This function is a stub for the _flockfile function in libpthread.
51  */
52 void
53 _flockfile_stub(FILE *fp)
54 {
55 }
56 
57 /*
58  * This function is a stub for the _flockfile_debug function in libpthread.
59  */
60 void
61 _flockfile_debug_stub(FILE *fp, char *fname, int lineno)
62 {
63 }
64 
65 /*
66  * This function is a stub for the _ftrylockfile function in libpthread.
67  */
68 int
69 _ftrylockfile_stub(FILE *fp)
70 {
71 	return(0);
72 }
73 
74 /*
75  * This function is a stub for the _funlockfile function in libpthread.
76  */
77 void
78 _funlockfile_stub(FILE *fp)
79 {
80 }
81 #endif
82