thr_kill.c revision 331722
1185377Ssam/* 2187831Ssam * Copyright (c) 1997 John Birrell <jb@cimlogic.com.au>. 3185377Ssam * All rights reserved. 4185377Ssam * 5185377Ssam * Redistribution and use in source and binary forms, with or without 6185377Ssam * modification, are permitted provided that the following conditions 7185377Ssam * are met: 8185377Ssam * 1. Redistributions of source code must retain the above copyright 9185377Ssam * notice, this list of conditions and the following disclaimer. 10185377Ssam * 2. Redistributions in binary form must reproduce the above copyright 11185377Ssam * notice, this list of conditions and the following disclaimer in the 12185377Ssam * documentation and/or other materials provided with the distribution. 13185377Ssam * 3. Neither the name of the author nor the names of any co-contributors 14185377Ssam * may be used to endorse or promote products derived from this software 15185377Ssam * without specific prior written permission. 16185377Ssam * 17187831Ssam * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND 18185377Ssam * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19185377Ssam * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20185377Ssam * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21185377Ssam * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22185377Ssam * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23185377Ssam * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24185377Ssam * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25185377Ssam * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26185377Ssam * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27185377Ssam * SUCH DAMAGE. 28185377Ssam */ 29185377Ssam 30185377Ssam#include <sys/cdefs.h> 31185377Ssam__FBSDID("$FreeBSD: stable/11/lib/libthr/thread/thr_kill.c 331722 2018-03-29 02:50:57Z eadler $"); 32185377Ssam 33185377Ssam#include "namespace.h" 34185377Ssam#include <errno.h> 35185377Ssam#include <signal.h> 36185377Ssam#include <pthread.h> 37185377Ssam#include "un-namespace.h" 38185377Ssam 39185377Ssam#include "thr_private.h" 40185377Ssam 41185377Ssam__weak_reference(_pthread_kill, pthread_kill); 42185377Ssam 43185377Ssamint 44185377Ssam_pthread_kill(pthread_t pthread, int sig) 45185377Ssam{ 46185377Ssam struct pthread *curthread; 47185377Ssam int ret; 48185377Ssam 49185377Ssam /* Check for invalid signal numbers: */ 50185377Ssam if (sig < 0 || sig > _SIG_MAXSIG) 51185377Ssam /* Invalid signal: */ 52185377Ssam return (EINVAL); 53185377Ssam 54185377Ssam curthread = _get_curthread(); 55185377Ssam 56185377Ssam /* 57185377Ssam * Ensure the thread is in the list of active threads, and the 58185377Ssam * signal is valid (signal 0 specifies error checking only) and 59185377Ssam * not being ignored: 60185377Ssam */ 61185377Ssam if (curthread == pthread) { 62185377Ssam if (sig > 0) 63185377Ssam _thr_send_sig(pthread, sig); 64185377Ssam ret = 0; 65185377Ssam } else if ((ret = _thr_find_thread(curthread, pthread, 66185377Ssam /*include dead*/0)) == 0) { 67185377Ssam if (sig > 0) 68185377Ssam _thr_send_sig(pthread, sig); 69185377Ssam THR_THREAD_UNLOCK(curthread, pthread); 70185377Ssam } 71185377Ssam 72185377Ssam /* Return the completion status: */ 73185377Ssam return (ret); 74185377Ssam} 75185377Ssam