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 * Copyright 2024 The FreeBSD Foundation 8 * 9 * Portions of this software were developed by Konstantin Belousov 10 * <kib@FreeBSD.org> under sponsorship from the FreeBSD Foundation. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. Neither the name of the author nor the names of any co-contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #include "namespace.h" 38 #include <errno.h> 39 #include <signal.h> 40 #include <pthread.h> 41 #include "un-namespace.h" 42 43 #include "thr_private.h" 44 45 __weak_reference(_Tthr_sigqueue, _pthread_sigqueue); 46 __weak_reference(_Tthr_sigqueue, pthread_sigqueue); 47 48 int 49 _Tthr_sigqueue(pthread_t pthread, int sig, const union sigval value) 50 { 51 struct pthread *curthread; 52 int e, ret; 53 54 if (sig < 0 || sig > _SIG_MAXSIG) 55 return (EINVAL); 56 57 curthread = _get_curthread(); 58 ret = 0; 59 60 if (curthread == pthread) { 61 if (sig > 0) { 62 e = sigqueue(pthread->tid, sig | __SIGQUEUE_TID, 63 value); 64 if (e == -1) 65 ret = errno; 66 } 67 } else if ((ret = _thr_find_thread(curthread, pthread, 68 0)) == 0) { 69 if (sig > 0) { 70 e = sigqueue(pthread->tid, sig | __SIGQUEUE_TID, 71 value); 72 if (e == -1) 73 ret = errno; 74 } 75 THR_THREAD_UNLOCK(curthread, pthread); 76 } 77 78 return (ret); 79 } 80