1/*-
2 * Copyright (c) 1998 Alex Nash
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 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: releng/10.3/lib/libthr/thread/thr_rwlockattr.c 214093 2010-10-20 02:34:02Z davidxu $
27 */
28
29#include "namespace.h"
30#include <errno.h>
31#include <stdlib.h>
32#include <pthread.h>
33#include "un-namespace.h"
34
35#include "thr_private.h"
36
37__weak_reference(_pthread_rwlockattr_destroy, pthread_rwlockattr_destroy);
38__weak_reference(_pthread_rwlockattr_getpshared, pthread_rwlockattr_getpshared);
39__weak_reference(_pthread_rwlockattr_init, pthread_rwlockattr_init);
40__weak_reference(_pthread_rwlockattr_setpshared, pthread_rwlockattr_setpshared);
41
42int
43_pthread_rwlockattr_destroy(pthread_rwlockattr_t *rwlockattr)
44{
45	pthread_rwlockattr_t prwlockattr;
46
47	if (rwlockattr == NULL)
48		return(EINVAL);
49
50	prwlockattr = *rwlockattr;
51
52	if (prwlockattr == NULL)
53		return(EINVAL);
54
55	free(prwlockattr);
56
57	return(0);
58}
59
60int
61_pthread_rwlockattr_getpshared(const pthread_rwlockattr_t *rwlockattr,
62	int *pshared)
63{
64	*pshared = (*rwlockattr)->pshared;
65
66	return(0);
67}
68
69int
70_pthread_rwlockattr_init(pthread_rwlockattr_t *rwlockattr)
71{
72	pthread_rwlockattr_t prwlockattr;
73
74	if (rwlockattr == NULL)
75		return(EINVAL);
76
77	prwlockattr = (pthread_rwlockattr_t)
78		malloc(sizeof(struct pthread_rwlockattr));
79
80	if (prwlockattr == NULL)
81		return(ENOMEM);
82
83	prwlockattr->pshared 	= PTHREAD_PROCESS_PRIVATE;
84	*rwlockattr		= prwlockattr;
85
86	return(0);
87}
88
89int
90_pthread_rwlockattr_setpshared(pthread_rwlockattr_t *rwlockattr, int pshared)
91{
92	/* Only PTHREAD_PROCESS_PRIVATE is supported. */
93	if (pshared != PTHREAD_PROCESS_PRIVATE)
94		return(EINVAL);
95
96	(*rwlockattr)->pshared = pshared;
97
98	return(0);
99}
100