1 /* $NetBSD: assert.c,v 1.16 2005/02/09 21:35:46 kleink 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. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #if defined(LIBC_SCCS) && !defined(lint) 34 #if 0 35 static char sccsid[] = "@(#)assert.c 8.1 (Berkeley) 6/4/93"; 36 #else 37 __RCSID("$NetBSD: assert.c,v 1.16 2005/02/09 21:35:46 kleink Exp $"); 38 #endif 39 #endif /* LIBC_SCCS and not lint */ 40 41 #include "namespace.h" 42 #include <sys/types.h> 43 44 #include <assert.h> 45 #include <stdio.h> 46 #include <stdlib.h> 47 #include <syslog.h> 48 49 void 50 __assert13(file, line, function, failedexpr) 51 const char *file, *function, *failedexpr; 52 int line; 53 { 54 55 (void)fprintf(stderr, 56 "assertion \"%s\" failed: file \"%s\", line %d%s%s%s\n", 57 failedexpr, file, line, 58 function ? ", function \"" : "", 59 function ? function : "", 60 function ? "\"" : ""); 61 abort(); 62 /* NOTREACHED */ 63 } 64 65 void 66 __assert(file, line, failedexpr) 67 const char *file, *failedexpr; 68 int line; 69 { 70 71 __assert13(file, line, NULL, failedexpr); 72 /* NOTREACHED */ 73 } 74 75 76 enum { 77 DIAGASSERT_ABORT = 1<<0, 78 DIAGASSERT_STDERR = 1<<1, 79 DIAGASSERT_SYSLOG = 1<<2 80 }; 81 82 static int diagassert_flags = -1; 83 84 void 85 __diagassert13(file, line, function, failedexpr) 86 const char *file, *function, *failedexpr; 87 int line; 88 { 89 char buf[1024]; 90 91 if (diagassert_flags == -1) { 92 char *p; 93 94 diagassert_flags = DIAGASSERT_SYSLOG; 95 96 for (p = getenv("LIBC_DIAGASSERT"); p && *p; p++) { 97 switch (*p) { 98 case 'a': 99 diagassert_flags |= DIAGASSERT_ABORT; 100 break; 101 case 'A': 102 diagassert_flags &= ~DIAGASSERT_ABORT; 103 break; 104 case 'e': 105 diagassert_flags |= DIAGASSERT_STDERR; 106 break; 107 case 'E': 108 diagassert_flags &= ~DIAGASSERT_STDERR; 109 break; 110 case 'l': 111 diagassert_flags |= DIAGASSERT_SYSLOG; 112 break; 113 case 'L': 114 diagassert_flags &= ~DIAGASSERT_SYSLOG; 115 break; 116 } 117 } 118 } 119 120 snprintf(buf, sizeof(buf), 121 "assertion \"%s\" failed: file \"%s\", line %d%s%s%s", 122 failedexpr, file, line, 123 function ? ", function \"" : "", 124 function ? function : "", 125 function ? "\"" : ""); 126 if (diagassert_flags & DIAGASSERT_STDERR) 127 (void)fprintf(stderr, "%s: %s\n", getprogname(), buf); 128 if (diagassert_flags & DIAGASSERT_SYSLOG) 129 syslog(LOG_DEBUG | LOG_USER, "%s", buf); 130 if (diagassert_flags & DIAGASSERT_ABORT) 131 abort(); 132 } 133 134 void 135 __diagassert(file, line, failedexpr) 136 const char *file, *failedexpr; 137 int line; 138 { 139 140 __diagassert13(file, line, NULL, failedexpr); 141 } 142