113546Sjulian/* 213546Sjulian * Copyright (c) 1995 John Birrell <jb@cimlogic.com.au>. 313546Sjulian * All rights reserved. 413546Sjulian * 513546Sjulian * Redistribution and use in source and binary forms, with or without 613546Sjulian * modification, are permitted provided that the following conditions 713546Sjulian * are met: 813546Sjulian * 1. Redistributions of source code must retain the above copyright 913546Sjulian * notice, this list of conditions and the following disclaimer. 1013546Sjulian * 2. Redistributions in binary form must reproduce the above copyright 1113546Sjulian * notice, this list of conditions and the following disclaimer in the 1213546Sjulian * documentation and/or other materials provided with the distribution. 13165967Simp * 3. Neither the name of the author nor the names of any co-contributors 1413546Sjulian * may be used to endorse or promote products derived from this software 1513546Sjulian * without specific prior written permission. 1613546Sjulian * 1713546Sjulian * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND 1813546Sjulian * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1913546Sjulian * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2049439Sdeischen * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 2113546Sjulian * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2213546Sjulian * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2313546Sjulian * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2413546Sjulian * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2513546Sjulian * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2613546Sjulian * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2713546Sjulian * SUCH DAMAGE. 2813546Sjulian * 2950476Speter * $FreeBSD$ 3013546Sjulian */ 31149691Sstefanf 32174112Sdeischen#include "namespace.h" 33149691Sstefanf#include <sys/types.h> 34149691Sstefanf#include <sys/signalvar.h> 3513546Sjulian#include <errno.h> 3613546Sjulian#include <pthread.h> 37149691Sstefanf#include <signal.h> 38113658Sdeischen#include <string.h> 39174112Sdeischen#include "un-namespace.h" 40103388Smini#include "thr_private.h" 4113546Sjulian 42174112Sdeischenint __sigsuspend(const sigset_t * set); 43174112Sdeischen 4475369Sdeischen__weak_reference(__sigsuspend, sigsuspend); 4571581Sdeischen 4613546Sjulianint 47113658Sdeischen_sigsuspend(const sigset_t *set) 48113658Sdeischen{ 49113658Sdeischen struct pthread *curthread = _get_curthread(); 50130374Sdavidxu sigset_t oldmask, newmask, tempset; 51113658Sdeischen int ret = -1; 52113658Sdeischen 53119063Sdavidxu if (curthread->attr.flags & PTHREAD_SCOPE_SYSTEM) 54117706Sdavidxu return (__sys_sigsuspend(set)); 55116977Sdavidxu 56113658Sdeischen /* Check if a new signal set was provided by the caller: */ 57113658Sdeischen if (set != NULL) { 58117300Sdavidxu newmask = *set; 59117706Sdavidxu SIG_CANTMASK(newmask); 60116514Sdavidxu THR_LOCK_SWITCH(curthread); 61113658Sdeischen 62130374Sdavidxu /* Save current sigmask: */ 63130374Sdavidxu oldmask = curthread->sigmask; 64130374Sdavidxu curthread->oldsigmask = &oldmask; 65117300Sdavidxu 66113658Sdeischen /* Change the caller's mask: */ 67130374Sdavidxu curthread->sigmask = newmask; 68130374Sdavidxu tempset = curthread->sigpend; 69130374Sdavidxu SIGSETNAND(tempset, newmask); 70130374Sdavidxu if (SIGISEMPTY(tempset)) { 71130374Sdavidxu THR_SET_STATE(curthread, PS_SIGSUSPEND); 72130374Sdavidxu /* Wait for a signal: */ 73130374Sdavidxu _thr_sched_switch_unlocked(curthread); 74130374Sdavidxu } else { 75139023Sdeischen curthread->check_pending = 1; 76130374Sdavidxu THR_UNLOCK_SWITCH(curthread); 77130374Sdavidxu /* check pending signal I can handle: */ 78130374Sdavidxu _thr_sig_check_pending(curthread); 79130374Sdavidxu } 80139052Sdeischen if ((curthread->cancelflags & THR_CANCELLING) != 0) 81139052Sdeischen curthread->oldsigmask = NULL; 82139052Sdeischen else { 83139052Sdeischen THR_ASSERT(curthread->oldsigmask == NULL, 84139052Sdeischen "oldsigmask is not cleared"); 85139052Sdeischen } 86139052Sdeischen 87113658Sdeischen /* Always return an interrupted error: */ 88113658Sdeischen errno = EINTR; 89113658Sdeischen } else { 90113658Sdeischen /* Return an invalid argument error: */ 91113658Sdeischen errno = EINVAL; 92113658Sdeischen } 93113658Sdeischen 94113658Sdeischen /* Return the completion status: */ 95113658Sdeischen return (ret); 96113658Sdeischen} 97113658Sdeischen 98113658Sdeischenint 9971581Sdeischen__sigsuspend(const sigset_t * set) 10056698Sjasone{ 101113658Sdeischen struct pthread *curthread = _get_curthread(); 102113658Sdeischen int ret; 10356698Sjasone 104123312Sdavidxu _thr_cancel_enter(curthread); 105113658Sdeischen ret = _sigsuspend(set); 106123312Sdavidxu _thr_cancel_leave(curthread, 1); 10756698Sjasone 108113658Sdeischen return (ret); 10956698Sjasone} 110