1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1997 John Birrell <jb@cimlogic.com.au>.
5 * All rights reserved.
6 *
7 * Copyright 2024 The FreeBSD Foundation
8 *
9 * Portions of this software were developed by Konstantin Belousov
10 * <kib@FreeBSD.org> under sponsorship from the FreeBSD Foundation.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 * 3. Neither the name of the author nor the names of any co-contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 */
36
37 #include "namespace.h"
38 #include <errno.h>
39 #include <signal.h>
40 #include <pthread.h>
41 #include "un-namespace.h"
42
43 #include "thr_private.h"
44
45 __weak_reference(_Tthr_sigqueue, _pthread_sigqueue);
46 __weak_reference(_Tthr_sigqueue, pthread_sigqueue);
47
48 int
_Tthr_sigqueue(pthread_t pthread,int sig,const union sigval value)49 _Tthr_sigqueue(pthread_t pthread, int sig, const union sigval value)
50 {
51 struct pthread *curthread;
52 int e, ret;
53
54 if (sig < 0 || sig > _SIG_MAXSIG)
55 return (EINVAL);
56
57 curthread = _get_curthread();
58 ret = 0;
59
60 if (curthread == pthread) {
61 if (sig > 0) {
62 e = sigqueue(pthread->tid, sig | __SIGQUEUE_TID,
63 value);
64 if (e == -1)
65 ret = errno;
66 }
67 } else if ((ret = _thr_find_thread(curthread, pthread,
68 0)) == 0) {
69 if (sig > 0) {
70 e = sigqueue(pthread->tid, sig | __SIGQUEUE_TID,
71 value);
72 if (e == -1)
73 ret = errno;
74 }
75 THR_THREAD_UNLOCK(curthread, pthread);
76 }
77
78 return (ret);
79 }
80