11573Srgrimes/* 21573Srgrimes * Copyright (c) 1989, 1993 31573Srgrimes * The Regents of the University of California. All rights reserved. 41573Srgrimes * 51573Srgrimes * Redistribution and use in source and binary forms, with or without 61573Srgrimes * modification, are permitted provided that the following conditions 71573Srgrimes * are met: 81573Srgrimes * 1. Redistributions of source code must retain the above copyright 91573Srgrimes * notice, this list of conditions and the following disclaimer. 101573Srgrimes * 2. Redistributions in binary form must reproduce the above copyright 111573Srgrimes * notice, this list of conditions and the following disclaimer in the 121573Srgrimes * documentation and/or other materials provided with the distribution. 131573Srgrimes * 4. Neither the name of the University nor the names of its contributors 141573Srgrimes * may be used to endorse or promote products derived from this software 151573Srgrimes * without specific prior written permission. 161573Srgrimes * 171573Srgrimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 181573Srgrimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 191573Srgrimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 201573Srgrimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 211573Srgrimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 221573Srgrimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 231573Srgrimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 241573Srgrimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 251573Srgrimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 261573Srgrimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 271573Srgrimes * SUCH DAMAGE. 281573Srgrimes */ 291573Srgrimes 301573Srgrimes#if defined(LIBC_SCCS) && !defined(lint) 311573Srgrimesstatic char sccsid[] = "@(#)siginterrupt.c 8.1 (Berkeley) 6/4/93"; 321573Srgrimes#endif /* LIBC_SCCS and not lint */ 3390039Sobrien#include <sys/cdefs.h> 3490039Sobrien__FBSDID("$FreeBSD$"); 351573Srgrimes 3671579Sdeischen#include "namespace.h" 371573Srgrimes#include <signal.h> 3871579Sdeischen#include "un-namespace.h" 3971579Sdeischen#include "libc_private.h" 401573Srgrimes 411573Srgrimes/* 421573Srgrimes * Set signal state to prevent restart of system calls 431573Srgrimes * after an instance of the indicated signal. 441573Srgrimes */ 4517141Sjkhint 46287480Skibsiginterrupt(int sig, int flag) 471573Srgrimes{ 48252429Sjilles extern sigset_t _sigintr __hidden; 491573Srgrimes struct sigaction sa; 501573Srgrimes int ret; 511573Srgrimes 52287480Skib if ((ret = __libc_sigaction(sig, (struct sigaction *)0, &sa)) < 0) 531573Srgrimes return (ret); 541573Srgrimes if (flag) { 551573Srgrimes sigaddset(&_sigintr, sig); 561573Srgrimes sa.sa_flags &= ~SA_RESTART; 571573Srgrimes } else { 581573Srgrimes sigdelset(&_sigintr, sig); 591573Srgrimes sa.sa_flags |= SA_RESTART; 601573Srgrimes } 61287480Skib return (__libc_sigaction(sig, &sa, (struct sigaction *)0)); 621573Srgrimes} 63