1 /* $NetBSD: assert.c,v 1.14 2001/02/20 01:17:37 cgd Exp $ */ 2 3 /*- 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University 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 REGENTS 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 REGENTS 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 <sys/cdefs.h> 37 #if defined(LIBC_SCCS) && !defined(lint) 38 #if 0 39 static char sccsid[] = "@(#)assert.c 8.1 (Berkeley) 6/4/93"; 40 #else 41 __RCSID("$NetBSD: assert.c,v 1.14 2001/02/20 01:17:37 cgd Exp $"); 42 #endif 43 #endif /* LIBC_SCCS and not lint */ 44 45 #include <sys/types.h> 46 47 #include <assert.h> 48 #include <stdio.h> 49 #include <stdlib.h> 50 #include <syslog.h> 51 52 void 53 __assert13(file, line, function, failedexpr) 54 const char *file, *function, *failedexpr; 55 int line; 56 { 57 58 (void)fprintf(stderr, 59 "assertion \"%s\" failed: file \"%s\", line %d%s%s%s\n", 60 failedexpr, file, line, 61 function ? ", function \"" : "", 62 function ? function : "", 63 function ? "\"" : ""); 64 abort(); 65 /* NOTREACHED */ 66 } 67 68 void 69 __assert(file, line, failedexpr) 70 const char *file, *failedexpr; 71 int line; 72 { 73 74 __assert13(file, line, NULL, failedexpr); 75 /* NOTREACHED */ 76 } 77 78 79 enum { 80 DIAGASSERT_ABORT = 1<<0, 81 DIAGASSERT_STDERR = 1<<1, 82 DIAGASSERT_SYSLOG = 1<<2 83 }; 84 85 static int diagassert_flags = -1; 86 87 void 88 __diagassert13(file, line, function, failedexpr) 89 const char *file, *function, *failedexpr; 90 int line; 91 { 92 char buf[1024]; 93 94 if (diagassert_flags == -1) { 95 char *p; 96 97 diagassert_flags = DIAGASSERT_SYSLOG; 98 99 for (p = getenv("LIBC_DIAGASSERT"); p && *p; p++) { 100 switch (*p) { 101 case 'a': 102 diagassert_flags |= DIAGASSERT_ABORT; 103 break; 104 case 'A': 105 diagassert_flags &= ~DIAGASSERT_ABORT; 106 break; 107 case 'e': 108 diagassert_flags |= DIAGASSERT_STDERR; 109 break; 110 case 'E': 111 diagassert_flags &= ~DIAGASSERT_STDERR; 112 break; 113 case 'l': 114 diagassert_flags |= DIAGASSERT_SYSLOG; 115 break; 116 case 'L': 117 diagassert_flags &= ~DIAGASSERT_SYSLOG; 118 break; 119 } 120 } 121 } 122 123 snprintf(buf, sizeof(buf), 124 "assertion \"%s\" failed: file \"%s\", line %d%s%s%s", 125 failedexpr, file, line, 126 function ? ", function \"" : "", 127 function ? function : "", 128 function ? "\"" : ""); 129 if (diagassert_flags & DIAGASSERT_STDERR) 130 (void)fprintf(stderr, "%s: %s\n", getprogname(), buf); 131 if (diagassert_flags & DIAGASSERT_SYSLOG) 132 syslog(LOG_DEBUG | LOG_USER, "%s", buf); 133 if (diagassert_flags & DIAGASSERT_ABORT) 134 abort(); 135 } 136 137 void 138 __diagassert(file, line, failedexpr) 139 const char *file, *failedexpr; 140 int line; 141 { 142 143 __diagassert13(file, line, NULL, failedexpr); 144 } 145