thr_rwlockattr.c revision 330897 
1/*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 1998 Alex Nash
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#include <sys/cdefs.h>
30__FBSDID("$FreeBSD: stable/11/lib/libthr/thread/thr_rwlockattr.c 330897 2018-03-14 03:19:51Z eadler $");
31
32#include "namespace.h"
33#include <errno.h>
34#include <stdlib.h>
35#include <pthread.h>
36#include "un-namespace.h"
37
38#include "thr_private.h"
39
40__weak_reference(_pthread_rwlockattr_destroy, pthread_rwlockattr_destroy);
41__weak_reference(_pthread_rwlockattr_getpshared, pthread_rwlockattr_getpshared);
42__weak_reference(_pthread_rwlockattr_init, pthread_rwlockattr_init);
43__weak_reference(_pthread_rwlockattr_setpshared, pthread_rwlockattr_setpshared);
44
45int
46_pthread_rwlockattr_destroy(pthread_rwlockattr_t *rwlockattr)
47{
48	pthread_rwlockattr_t prwlockattr;
49
50	if (rwlockattr == NULL)
51		return (EINVAL);
52	prwlockattr = *rwlockattr;
53	if (prwlockattr == NULL)
54		return (EINVAL);
55	free(prwlockattr);
56	return (0);
57}
58
59int
60_pthread_rwlockattr_getpshared(const pthread_rwlockattr_t *rwlockattr,
61    int *pshared)
62{
63
64	*pshared = (*rwlockattr)->pshared;
65	return (0);
66}
67
68int
69_pthread_rwlockattr_init(pthread_rwlockattr_t *rwlockattr)
70{
71	pthread_rwlockattr_t prwlockattr;
72
73	if (rwlockattr == NULL)
74		return (EINVAL);
75
76	prwlockattr = malloc(sizeof(struct pthread_rwlockattr));
77	if (prwlockattr == NULL)
78		return (ENOMEM);
79
80	prwlockattr->pshared = PTHREAD_PROCESS_PRIVATE;
81	*rwlockattr = prwlockattr;
82	return (0);
83}
84
85int
86_pthread_rwlockattr_setpshared(pthread_rwlockattr_t *rwlockattr, int pshared)
87{
88
89	if (pshared != PTHREAD_PROCESS_PRIVATE &&
90	    pshared != PTHREAD_PROCESS_SHARED)
91		return (EINVAL);
92	(*rwlockattr)->pshared = pshared;
93	return (0);
94}
95