1 /*
2  * Copyright (c) 1997 John Birrell <jb@cimlogic.com.au>.
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  * 3. Neither the name of the author nor the names of any co-contributors
14  *    may be used to endorse or promote products derived from this software
15  *    without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  *
29  */
30 
31 #include "namespace.h"
32 #include <machine/tls.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 int
41 _pthread_kill(pthread_t pthread, int sig)
42 {
43 	pthread_t curthread;
44 	int ret;
45 
46 	/* Check for invalid signal numbers: */
47 	if (sig < 0 || sig > _SIG_MAXSIG)
48 		/* Invalid signal: */
49 		return (EINVAL);
50 
51 	curthread = tls_get_curthread();
52 
53 	/*
54 	 * Ensure the thread is in the list of active threads, and the
55 	 * signal is valid (signal 0 specifies error checking only) and
56 	 * not being ignored:
57 	 */
58 	if ((ret = _thr_ref_add(curthread, pthread, /*include dead*/0))
59 	    == 0) {
60 		if (sig > 0)
61 			_thr_send_sig(pthread, sig);
62 		_thr_ref_delete(curthread, pthread);
63 	}
64 
65 	/* Return the completion status: */
66 	return (ret);
67 }
68 
69 __strong_reference(_pthread_kill, pthread_kill);
70