11366Scsgr/* 21366Scsgr * Copyright (c) 1989, 1993 31366Scsgr * The Regents of the University of California. All rights reserved. 41366Scsgr * 51366Scsgr * Redistribution and use in source and binary forms, with or without 61366Scsgr * modification, are permitted provided that the following conditions 71366Scsgr * are met: 81366Scsgr * 1. Redistributions of source code must retain the above copyright 91366Scsgr * notice, this list of conditions and the following disclaimer. 101366Scsgr * 2. Redistributions in binary form must reproduce the above copyright 111366Scsgr * notice, this list of conditions and the following disclaimer in the 121366Scsgr * documentation and/or other materials provided with the distribution. 131366Scsgr * 4. Neither the name of the University nor the names of its contributors 141366Scsgr * may be used to endorse or promote products derived from this software 151366Scsgr * without specific prior written permission. 161366Scsgr * 171366Scsgr * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 181366Scsgr * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 191366Scsgr * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 201366Scsgr * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 211366Scsgr * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 221366Scsgr * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 231366Scsgr * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 241366Scsgr * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 251366Scsgr * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 261366Scsgr * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 271366Scsgr * SUCH DAMAGE. 281366Scsgr */ 291366Scsgr 301366Scsgr#if defined(LIBC_SCCS) && !defined(lint) 311366Scsgrstatic char sccsid[] = "@(#)siginterrupt.c 8.1 (Berkeley) 6/4/93"; 321366Scsgr#endif /* LIBC_SCCS and not lint */ 3319411Swosch#include <sys/cdefs.h> 341366Scsgr__FBSDID("$FreeBSD$"); 351366Scsgr 361366Scsgr#include "namespace.h" 371366Scsgr#include <signal.h> 381366Scsgr#include "un-namespace.h" 391376Scsgr#include "libc_private.h" 401376Scsgr 411366Scsgr/* 421366Scsgr * Set signal state to prevent restart of system calls 431366Scsgr * after an instance of the indicated signal. 441366Scsgr */ 451366Scsgrint 461366Scsgrsiginterrupt(sig, flag) 471366Scsgr int sig, flag; 481366Scsgr{ 4919411Swosch extern sigset_t _sigintr __hidden; 501366Scsgr struct sigaction sa; 511366Scsgr int ret; 521366Scsgr 531366Scsgr if ((ret = _sigaction(sig, (struct sigaction *)0, &sa)) < 0) 541366Scsgr return (ret); 551366Scsgr if (flag) { 561366Scsgr sigaddset(&_sigintr, sig); 571366Scsgr sa.sa_flags &= ~SA_RESTART; 581366Scsgr } else { 591366Scsgr sigdelset(&_sigintr, sig); 601366Scsgr sa.sa_flags |= SA_RESTART; 611366Scsgr } 621366Scsgr return (_sigaction(sig, &sa, (struct sigaction *)0)); 631366Scsgr} 641366Scsgr