1 /* $NetBSD: assert.c,v 1.17 2012/06/25 22:32:43 abs 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 1.17 2012/06/25 22:32:43 abs 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(const char *file, int line, const char *function, 51 const char *failedexpr) 52 { 53 54 (void)fprintf(stderr, 55 "assertion \"%s\" failed: file \"%s\", line %d%s%s%s\n", 56 failedexpr, file, line, 57 function ? ", function \"" : "", 58 function ? function : "", 59 function ? "\"" : ""); 60 abort(); 61 /* NOTREACHED */ 62 } 63 64 void 65 __assert(const char *file, int line, const char *failedexpr) 66 { 67 68 __assert13(file, line, NULL, failedexpr); 69 /* NOTREACHED */ 70 } 71 72 73 enum { 74 DIAGASSERT_ABORT = 1<<0, 75 DIAGASSERT_STDERR = 1<<1, 76 DIAGASSERT_SYSLOG = 1<<2 77 }; 78 79 static int diagassert_flags = -1; 80 81 void 82 __diagassert13(const char *file, int line, const char *function, 83 const char *failedexpr) 84 { 85 char buf[1024]; 86 87 if (diagassert_flags == -1) { 88 char *p; 89 90 diagassert_flags = DIAGASSERT_SYSLOG; 91 92 for (p = getenv("LIBC_DIAGASSERT"); p && *p; p++) { 93 switch (*p) { 94 case 'a': 95 diagassert_flags |= DIAGASSERT_ABORT; 96 break; 97 case 'A': 98 diagassert_flags &= ~DIAGASSERT_ABORT; 99 break; 100 case 'e': 101 diagassert_flags |= DIAGASSERT_STDERR; 102 break; 103 case 'E': 104 diagassert_flags &= ~DIAGASSERT_STDERR; 105 break; 106 case 'l': 107 diagassert_flags |= DIAGASSERT_SYSLOG; 108 break; 109 case 'L': 110 diagassert_flags &= ~DIAGASSERT_SYSLOG; 111 break; 112 } 113 } 114 } 115 116 snprintf(buf, sizeof(buf), 117 "assertion \"%s\" failed: file \"%s\", line %d%s%s%s", 118 failedexpr, file, line, 119 function ? ", function \"" : "", 120 function ? function : "", 121 function ? "\"" : ""); 122 if (diagassert_flags & DIAGASSERT_STDERR) 123 (void)fprintf(stderr, "%s: %s\n", getprogname(), buf); 124 if (diagassert_flags & DIAGASSERT_SYSLOG) 125 syslog(LOG_DEBUG | LOG_USER, "%s", buf); 126 if (diagassert_flags & DIAGASSERT_ABORT) 127 abort(); 128 } 129 130 void 131 __diagassert(const char *file, int line, const char *failedexpr) 132 { 133 134 __diagassert13(file, line, NULL, failedexpr); 135 } 136