error.c revision 290001 
1/*
2 * Copyright (C) 2004, 2005, 2007  Internet Systems Consortium, Inc. ("ISC")
3 * Copyright (C) 1998-2001  Internet Software Consortium.
4 *
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
10 * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
11 * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
12 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
13 * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
14 * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
15 * PERFORMANCE OF THIS SOFTWARE.
16 */
17
18/* $Id: error.c,v 1.21 2007/06/19 23:47:17 tbox Exp $ */
19
20/*! \file */
21
22#include <config.h>
23
24#include <stdio.h>
25#include <stdlib.h>
26
27#include <isc/error.h>
28#include <isc/msgs.h>
29
30/*% Default unexpected callback. */
31static void
32default_unexpected_callback(const char *, int, const char *, va_list)
33     ISC_FORMAT_PRINTF(3, 0);
34
35/*% Default fatal callback. */
36static void
37default_fatal_callback(const char *, int, const char *, va_list)
38     ISC_FORMAT_PRINTF(3, 0);
39
40/*% unexpected_callback */
41static isc_errorcallback_t unexpected_callback = default_unexpected_callback;
42static isc_errorcallback_t fatal_callback = default_fatal_callback;
43
44void
45isc_error_setunexpected(isc_errorcallback_t cb) {
46	if (cb == NULL)
47		unexpected_callback = default_unexpected_callback;
48	else
49		unexpected_callback = cb;
50}
51
52void
53isc_error_setfatal(isc_errorcallback_t cb) {
54	if (cb == NULL)
55		fatal_callback = default_fatal_callback;
56	else
57		fatal_callback = cb;
58}
59
60void
61isc_error_unexpected(const char *file, int line, const char *format, ...) {
62	va_list args;
63
64	va_start(args, format);
65	(unexpected_callback)(file, line, format, args);
66	va_end(args);
67}
68
69void
70isc_error_fatal(const char *file, int line, const char *format, ...) {
71	va_list args;
72
73	va_start(args, format);
74	(fatal_callback)(file, line, format, args);
75	va_end(args);
76	abort();
77}
78
79void
80isc_error_runtimecheck(const char *file, int line, const char *expression) {
81	isc_error_fatal(file, line, "RUNTIME_CHECK(%s) %s", expression,
82			isc_msgcat_get(isc_msgcat, ISC_MSGSET_GENERAL,
83				       ISC_MSG_FAILED, "failed"));
84}
85
86static void
87default_unexpected_callback(const char *file, int line, const char *format,
88			    va_list args)
89{
90	fprintf(stderr, "%s:%d: ", file, line);
91	vfprintf(stderr, format, args);
92	fprintf(stderr, "\n");
93	fflush(stderr);
94}
95
96static void
97default_fatal_callback(const char *file, int line, const char *format,
98		       va_list args)
99{
100	fprintf(stderr, "%s:%d: %s: ", file, line,
101		isc_msgcat_get(isc_msgcat, ISC_MSGSET_GENERAL,
102			       ISC_MSG_FATALERROR, "fatal error"));
103	vfprintf(stderr, format, args);
104	fprintf(stderr, "\n");
105	fflush(stderr);
106}
107