1 /* $NetBSD: assert.c,v 1.12 2001/01/03 12:44:53 lukem 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 1.12 2001/01/03 12:44:53 lukem 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 extern char *__progname; 53 54 void 55 __assert13(file, line, function, failedexpr) 56 const char *file, *function, *failedexpr; 57 int line; 58 { 59 60 (void)fprintf(stderr, 61 "assertion \"%s\" failed: file \"%s\", line %d%s%s%s\n", 62 failedexpr, file, line, 63 function ? ", function \"" : "", 64 function ? function : "", 65 function ? "\"" : ""); 66 abort(); 67 /* NOTREACHED */ 68 } 69 70 void 71 __assert(file, line, failedexpr) 72 const char *file, *failedexpr; 73 int line; 74 { 75 76 __assert13(file, line, NULL, failedexpr); 77 /* NOTREACHED */ 78 } 79 80 81 enum { 82 DIAGASSERT_ABORT = 1<<0, 83 DIAGASSERT_STDERR = 1<<1, 84 DIAGASSERT_SYSLOG = 1<<2 85 }; 86 87 static int diagassert_flags = -1; 88 89 void 90 __diagassert13(file, line, function, failedexpr) 91 const char *file, *function, *failedexpr; 92 int line; 93 { 94 char buf[1024]; 95 96 if (diagassert_flags == -1) { 97 char *p; 98 99 diagassert_flags = DIAGASSERT_SYSLOG; 100 101 for (p = getenv("LIBC_DIAGASSERT"); p && *p; p++) { 102 switch (*p) { 103 case 'a': 104 diagassert_flags |= DIAGASSERT_ABORT; 105 break; 106 case 'A': 107 diagassert_flags &= ~DIAGASSERT_ABORT; 108 break; 109 case 'e': 110 diagassert_flags |= DIAGASSERT_STDERR; 111 break; 112 case 'E': 113 diagassert_flags &= ~DIAGASSERT_STDERR; 114 break; 115 case 'l': 116 diagassert_flags |= DIAGASSERT_SYSLOG; 117 break; 118 case 'L': 119 diagassert_flags &= ~DIAGASSERT_SYSLOG; 120 break; 121 } 122 } 123 } 124 125 snprintf(buf, sizeof(buf), 126 "assertion \"%s\" failed: file \"%s\", line %d%s%s%s", 127 failedexpr, file, line, 128 function ? ", function \"" : "", 129 function ? function : "", 130 function ? "\"" : ""); 131 if (diagassert_flags & DIAGASSERT_STDERR) 132 (void)fprintf(stderr, "%s: %s\n", __progname, buf); 133 if (diagassert_flags & DIAGASSERT_SYSLOG) 134 syslog(LOG_DEBUG | LOG_USER, "%s", buf); 135 if (diagassert_flags & DIAGASSERT_ABORT) 136 abort(); 137 } 138 139 void 140 __diagassert(file, line, failedexpr) 141 const char *file, *failedexpr; 142 int line; 143 { 144 145 __diagassert13(file, line, NULL, failedexpr); 146 } 147