1 /* $NetBSD: assert.c,v 1.15 2003/08/07 16:42:46 agc 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 1.15 2003/08/07 16:42:46 agc Exp $"); 38 #endif 39 #endif /* LIBC_SCCS and not lint */ 40 41 #include <sys/types.h> 42 43 #include <assert.h> 44 #include <stdio.h> 45 #include <stdlib.h> 46 #include <syslog.h> 47 48 void 49 __assert13(file, line, function, failedexpr) 50 const char *file, *function, *failedexpr; 51 int line; 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(file, line, failedexpr) 66 const char *file, *failedexpr; 67 int line; 68 { 69 70 __assert13(file, line, NULL, failedexpr); 71 /* NOTREACHED */ 72 } 73 74 75 enum { 76 DIAGASSERT_ABORT = 1<<0, 77 DIAGASSERT_STDERR = 1<<1, 78 DIAGASSERT_SYSLOG = 1<<2 79 }; 80 81 static int diagassert_flags = -1; 82 83 void 84 __diagassert13(file, line, function, failedexpr) 85 const char *file, *function, *failedexpr; 86 int line; 87 { 88 char buf[1024]; 89 90 if (diagassert_flags == -1) { 91 char *p; 92 93 diagassert_flags = DIAGASSERT_SYSLOG; 94 95 for (p = getenv("LIBC_DIAGASSERT"); p && *p; p++) { 96 switch (*p) { 97 case 'a': 98 diagassert_flags |= DIAGASSERT_ABORT; 99 break; 100 case 'A': 101 diagassert_flags &= ~DIAGASSERT_ABORT; 102 break; 103 case 'e': 104 diagassert_flags |= DIAGASSERT_STDERR; 105 break; 106 case 'E': 107 diagassert_flags &= ~DIAGASSERT_STDERR; 108 break; 109 case 'l': 110 diagassert_flags |= DIAGASSERT_SYSLOG; 111 break; 112 case 'L': 113 diagassert_flags &= ~DIAGASSERT_SYSLOG; 114 break; 115 } 116 } 117 } 118 119 snprintf(buf, sizeof(buf), 120 "assertion \"%s\" failed: file \"%s\", line %d%s%s%s", 121 failedexpr, file, line, 122 function ? ", function \"" : "", 123 function ? function : "", 124 function ? "\"" : ""); 125 if (diagassert_flags & DIAGASSERT_STDERR) 126 (void)fprintf(stderr, "%s: %s\n", getprogname(), buf); 127 if (diagassert_flags & DIAGASSERT_SYSLOG) 128 syslog(LOG_DEBUG | LOG_USER, "%s", buf); 129 if (diagassert_flags & DIAGASSERT_ABORT) 130 abort(); 131 } 132 133 void 134 __diagassert(file, line, failedexpr) 135 const char *file, *failedexpr; 136 int line; 137 { 138 139 __diagassert13(file, line, NULL, failedexpr); 140 } 141