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