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 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