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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 /* Copyright (c) 1988 AT&T */ 28 /* All Rights Reserved */ 29 30 #include "lint.h" 31 #include "file64.h" 32 #include <signal.h> 33 #include <stdlib.h> 34 #include <unistd.h> 35 #include <stdio.h> 36 #include "stdiom.h" 37 38 static int pass = 0; /* counts how many times abort has been called */ 39 40 /* 41 * abort() - terminate current process with dump via SIGABRT 42 */ 43 void 44 abort(void) 45 { 46 sigset_t set; 47 struct sigaction act; 48 49 if (!sigaction(SIGABRT, NULL, &act) && 50 act.sa_handler != SIG_DFL && act.sa_handler != SIG_IGN) { 51 /* 52 * User handler is installed, invokes user handler before 53 * taking default action. 54 * 55 * Send SIGABRT, unblock SIGABRT if blocked. 56 * If there is pending signal SIGABRT, we only need to unblock 57 * SIGABRT. 58 */ 59 if (!sigprocmask(SIG_SETMASK, NULL, &set) && 60 sigismember(&set, SIGABRT)) { 61 if (!sigpending(&set) && !sigismember(&set, SIGABRT)) 62 (void) raise(SIGABRT); 63 (void) sigrelse(SIGABRT); 64 } else 65 (void) raise(SIGABRT); 66 } 67 68 if (++pass == 1) 69 __cleanup(); 70 71 for (;;) { 72 (void) signal(SIGABRT, SIG_DFL); 73 (void) sigrelse(SIGABRT); 74 (void) raise(SIGABRT); 75 } 76 } 77