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 * 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 * 3. Neither the name of the author nor the names of any co-contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #include "namespace.h"
33 #include <errno.h>
34 #include <signal.h>
35 #include <pthread.h>
36 #include "un-namespace.h"
37
38 #include "thr_private.h"
39
40 __weak_reference(_Tthr_kill, _pthread_kill);
41 __weak_reference(_Tthr_kill, pthread_kill);
42
43 int
_Tthr_kill(pthread_t pthread,int sig)44 _Tthr_kill(pthread_t pthread, int sig)
45 {
46 struct pthread *curthread;
47 int ret;
48
49 /* Check for invalid signal numbers: */
50 if (sig < 0 || sig > _SIG_MAXSIG)
51 /* Invalid signal: */
52 return (EINVAL);
53
54 curthread = _get_curthread();
55
56 /*
57 * Ensure the thread is in the list of active threads, and the
58 * signal is valid (signal 0 specifies error checking only) and
59 * not being ignored:
60 */
61 if (curthread == pthread) {
62 if (sig > 0)
63 _thr_send_sig(pthread, sig);
64 ret = 0;
65 } else if ((ret = _thr_find_thread(curthread, pthread,
66 /*include dead*/0)) == 0) {
67 if (sig > 0)
68 _thr_send_sig(pthread, sig);
69 THR_THREAD_UNLOCK(curthread, pthread);
70 }
71
72 /* Return the completion status: */
73 return (ret);
74 }
75