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 #pragma ident "%Z%%M% %I% %E% SMI" 31 32 #include "lint.h" 33 #include "file64.h" 34 #include <signal.h> 35 #include <stdlib.h> 36 #include <unistd.h> 37 #include <stdio.h> 38 #include "stdiom.h" 39 40 static int pass = 0; /* counts how many times abort has been called */ 41 42 /* 43 * abort() - terminate current process with dump via SIGABRT 44 */ 45 void 46 abort(void) 47 { 48 sigset_t set; 49 struct sigaction act; 50 51 if (!sigaction(SIGABRT, NULL, &act) && 52 act.sa_handler != SIG_DFL && act.sa_handler != SIG_IGN) { 53 /* 54 * User handler is installed, invokes user handler before 55 * taking default action. 56 * 57 * Send SIGABRT, unblock SIGABRT if blocked. 58 * If there is pending signal SIGABRT, we only need to unblock 59 * SIGABRT. 60 */ 61 if (!sigprocmask(SIG_SETMASK, NULL, &set) && 62 sigismember(&set, SIGABRT)) { 63 if (!sigpending(&set) && !sigismember(&set, SIGABRT)) 64 (void) raise(SIGABRT); 65 (void) sigrelse(SIGABRT); 66 } else 67 (void) raise(SIGABRT); 68 } 69 70 if (++pass == 1) 71 __cleanup(); 72 73 for (;;) { 74 (void) signal(SIGABRT, SIG_DFL); 75 (void) sigrelse(SIGABRT); 76 (void) raise(SIGABRT); 77 } 78 } 79