1 /* $NetBSD: signal.c,v 1.1.1.1 2011/04/13 18:15:43 elric Exp $ */ 2 3 /* 4 * Copyright (c) 1995 - 2000 Kungliga Tekniska Högskolan 5 * (Royal Institute of Technology, Stockholm, Sweden). 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * 3. Neither the name of the Institute nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <config.h> 37 38 #include <signal.h> 39 #include <krb5/roken.h> 40 41 /* 42 * We would like to always use this signal but there is a link error 43 * on NEXTSTEP 44 */ 45 #if !defined(NeXT) && !defined(__APPLE__) 46 /* 47 * Bugs: 48 * 49 * Do we need any extra hacks for SIGCLD and/or SIGCHLD? 50 */ 51 52 ROKEN_LIB_FUNCTION SigAction ROKEN_LIB_CALL 53 signal(int iSig, SigAction pAction) 54 { 55 struct sigaction saNew, saOld; 56 57 saNew.sa_handler = pAction; 58 sigemptyset(&saNew.sa_mask); 59 saNew.sa_flags = 0; 60 61 if (iSig == SIGALRM) 62 { 63 #ifdef SA_INTERRUPT 64 saNew.sa_flags |= SA_INTERRUPT; 65 #endif 66 } 67 else 68 { 69 #ifdef SA_RESTART 70 saNew.sa_flags |= SA_RESTART; 71 #endif 72 } 73 74 if (sigaction(iSig, &saNew, &saOld) < 0) 75 return(SIG_ERR); 76 77 return(saOld.sa_handler); 78 } 79 #endif 80