122315Sjulian/* 222315Sjulian * Copyright (c) 1997 John Birrell <jb@cimlogic.com.au>. 322315Sjulian * All rights reserved. 422315Sjulian * 522315Sjulian * Redistribution and use in source and binary forms, with or without 622315Sjulian * modification, are permitted provided that the following conditions 722315Sjulian * are met: 822315Sjulian * 1. Redistributions of source code must retain the above copyright 922315Sjulian * notice, this list of conditions and the following disclaimer. 1022315Sjulian * 2. Redistributions in binary form must reproduce the above copyright 1122315Sjulian * notice, this list of conditions and the following disclaimer in the 1222315Sjulian * documentation and/or other materials provided with the distribution. 13165967Simp * 3. Neither the name of the author nor the names of any co-contributors 1422315Sjulian * may be used to endorse or promote products derived from this software 1522315Sjulian * without specific prior written permission. 1622315Sjulian * 1722315Sjulian * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND 1822315Sjulian * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1922315Sjulian * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2049439Sdeischen * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 2122315Sjulian * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2222315Sjulian * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2322315Sjulian * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2422315Sjulian * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2522315Sjulian * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2622315Sjulian * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2722315Sjulian * SUCH DAMAGE. 2822315Sjulian * 2950476Speter * $FreeBSD$ 3022315Sjulian */ 31174112Sdeischen 32174112Sdeischen#include "namespace.h" 3351794Smarcel#include <sys/param.h> 3451794Smarcel#include <sys/types.h> 3551794Smarcel#include <sys/signalvar.h> 3622315Sjulian#include <errno.h> 3722315Sjulian#include <signal.h> 38113658Sdeischen#include <string.h> 3922315Sjulian#include <pthread.h> 40174112Sdeischen#include "un-namespace.h" 41103388Smini#include "thr_private.h" 4222315Sjulian 4375369Sdeischen__weak_reference(_pthread_sigmask, pthread_sigmask); 4471581Sdeischen 4522315Sjulianint 4671581Sdeischen_pthread_sigmask(int how, const sigset_t *set, sigset_t *oset) 4722315Sjulian{ 48106193Smini struct pthread *curthread = _get_curthread(); 49117300Sdavidxu sigset_t oldset, newset; 50113658Sdeischen int ret; 5122315Sjulian 52117706Sdavidxu if (curthread->attr.flags & PTHREAD_SCOPE_SYSTEM) { 53117706Sdavidxu ret = __sys_sigprocmask(how, set, oset); 54117706Sdavidxu if (ret != 0) 55117706Sdavidxu ret = errno; 56120078Sdavidxu /* Get a fresh copy */ 57117706Sdavidxu __sys_sigprocmask(SIG_SETMASK, NULL, &curthread->sigmask); 58117706Sdavidxu return (ret); 59117706Sdavidxu } 60117706Sdavidxu 61117300Sdavidxu if (set) 62117300Sdavidxu newset = *set; 63117300Sdavidxu 64116977Sdavidxu THR_SCHED_LOCK(curthread, curthread); 65117300Sdavidxu 66113658Sdeischen ret = 0; 67106193Smini if (oset != NULL) 68113658Sdeischen /* Return the current mask: */ 69117300Sdavidxu oldset = curthread->sigmask; 70113658Sdeischen 71113658Sdeischen /* Check if a new signal set was provided by the caller: */ 72113658Sdeischen if (set != NULL) { 73113658Sdeischen /* Process according to what to do: */ 74113658Sdeischen switch (how) { 75113658Sdeischen /* Block signals: */ 76113658Sdeischen case SIG_BLOCK: 77113658Sdeischen /* Add signals to the existing mask: */ 78117300Sdavidxu SIGSETOR(curthread->sigmask, newset); 79113658Sdeischen break; 80113658Sdeischen 81113658Sdeischen /* Unblock signals: */ 82113658Sdeischen case SIG_UNBLOCK: 83113658Sdeischen /* Clear signals from the existing mask: */ 84117300Sdavidxu SIGSETNAND(curthread->sigmask, newset); 85113658Sdeischen break; 86113658Sdeischen 87113658Sdeischen /* Set the signal process mask: */ 88113658Sdeischen case SIG_SETMASK: 89113658Sdeischen /* Set the new mask: */ 90117300Sdavidxu curthread->sigmask = newset; 91113658Sdeischen break; 92113658Sdeischen 93113658Sdeischen /* Trap invalid actions: */ 94113658Sdeischen default: 95113658Sdeischen /* Return an invalid argument: */ 96120197Sdavidxu ret = EINVAL; 97113658Sdeischen break; 98113658Sdeischen } 99116977Sdavidxu SIG_CANTMASK(curthread->sigmask); 100113658Sdeischen THR_SCHED_UNLOCK(curthread, curthread); 101113658Sdeischen 102113658Sdeischen /* 103113658Sdeischen * Run down any pending signals: 104113658Sdeischen */ 105113658Sdeischen if (ret == 0) 106113658Sdeischen _thr_sig_check_pending(curthread); 107116977Sdavidxu } else 108116977Sdavidxu THR_SCHED_UNLOCK(curthread, curthread); 109117300Sdavidxu 110117300Sdavidxu if (ret == 0 && oset != NULL) 111117300Sdavidxu *oset = oldset; 112113658Sdeischen return (ret); 11322315Sjulian} 114