1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* Copyright (c) 1988 AT&T */ 30 /* All Rights Reserved */ 31 32 33 #include "synonyms.h" 34 #include "file64.h" 35 #include <signal.h> 36 #include <stdlib.h> 37 #include <unistd.h> 38 #include <stdio.h> 39 #include "stdiom.h" 40 41 static int pass = 0; /* counts how many times abort has been called */ 42 43 /* 44 * abort() - terminate current process with dump via SIGABRT 45 */ 46 void 47 abort(void) 48 { 49 sigset_t set; 50 struct sigaction act; 51 52 if (!sigaction(SIGABRT, NULL, &act) && 53 act.sa_handler != SIG_DFL && act.sa_handler != SIG_IGN) { 54 /* 55 * User handler is installed, invokes user handler before 56 * taking default action. 57 * 58 * Send SIGABRT, unblock SIGABRT if blocked. 59 * If there is pending signal SIGABRT, we only need to unblock 60 * SIGABRT. 61 */ 62 if (!sigprocmask(SIG_SETMASK, NULL, &set) && 63 sigismember(&set, SIGABRT)) { 64 if (!sigpending(&set) && !sigismember(&set, SIGABRT)) 65 (void) raise(SIGABRT); 66 (void) sigrelse(SIGABRT); 67 } else 68 (void) raise(SIGABRT); 69 } 70 71 if (++pass == 1) 72 __cleanup(); 73 74 for (;;) { 75 (void) signal(SIGABRT, SIG_DFL); 76 (void) sigrelse(SIGABRT); 77 (void) raise(SIGABRT); 78 } 79 } 80