1/* 2 * Copyright (c) 2003 Apple Computer, Inc. All rights reserved. 3 * 4 * @APPLE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. Please obtain a copy of the License at 10 * http://www.opensource.apple.com/apsl/ and read it before using this 11 * file. 12 * 13 * The Original Code and all software distributed under the License are 14 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 15 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 16 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 17 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 18 * Please see the License for the specific language governing rights and 19 * limitations under the License. 20 * 21 * @APPLE_LICENSE_HEADER_END@ 22 */ 23 24/* 25 * bsd_signal() function, per POIX 1003.1-2003 26 */ 27#include <signal.h> 28 29void 30(*bsd_signal(int sig, void (*func)(int)))(int) 31{ 32 struct sigaction act, oact; 33 34 35 act.sa_handler = func; 36 act.sa_flags = SA_RESTART; 37 38 sigemptyset(&act.sa_mask); 39 sigaddset(&act.sa_mask, sig); 40 if (sigaction(sig, &act, &oact) == -1) 41 return(SIG_ERR); 42 43 return(oact.sa_handler); 44} 45