1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1997 John Birrell <[email protected]>.
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 <sys/cdefs.h>
33 __FBSDID("$FreeBSD$");
34
35 #include "namespace.h"
36 #include <errno.h>
37 #include <signal.h>
38 #include <pthread.h>
39 #include "un-namespace.h"
40
41 #include "thr_private.h"
42
43 __weak_reference(_Tthr_kill, _pthread_kill);
44 __weak_reference(_Tthr_kill, pthread_kill);
45
46 int
_Tthr_kill(pthread_t pthread,int sig)47 _Tthr_kill(pthread_t pthread, int sig)
48 {
49 struct pthread *curthread;
50 int ret;
51
52 /* Check for invalid signal numbers: */
53 if (sig < 0 || sig > _SIG_MAXSIG)
54 /* Invalid signal: */
55 return (EINVAL);
56
57 curthread = _get_curthread();
58
59 /*
60 * Ensure the thread is in the list of active threads, and the
61 * signal is valid (signal 0 specifies error checking only) and
62 * not being ignored:
63 */
64 if (curthread == pthread) {
65 if (sig > 0)
66 _thr_send_sig(pthread, sig);
67 ret = 0;
68 } else if ((ret = _thr_find_thread(curthread, pthread,
69 /*include dead*/0)) == 0) {
70 if (sig > 0)
71 _thr_send_sig(pthread, sig);
72 THR_THREAD_UNLOCK(curthread, pthread);
73 }
74
75 /* Return the completion status: */
76 return (ret);
77 }
78