GCOV - Varnish Cache


/*-
 * Copyright (c) 2006 Verdens Gang AS
 * Copyright (c) 2006-2016 Varnish Software AS
 * All rights reserved.
 *
 * Author: Poul-Henning Kamp <phk@phk.freebsd.dk>
 *
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * This is the default backend function for libvarnish' assert facilities.
 */

#include "config.h"

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>

#include "vdef.h"
#include "vbt.h"

#include "vas.h"

const char *
VAS_errtxt(int e)
{
        const char *p;
        int oerrno = errno;

        p = strerror(e);
        if (p != NULL)
                return (p);

        errno = oerrno;
        return ("strerror(3) returned NULL");
}

vas_f *VAS_Fail_Func v_noreturn_;

static void
vas_default(const char *func, const char *file, int line,
    const char *cond, enum vas_e kind)
{
        int err = errno;
        char buf[4096];

        if (kind == VAS_MISSING) {
                fprintf(stderr,
                    "Missing error handling code in %s(), %s line %d:\n"
                    "  Condition(%s) not true.\n",
                    func, file, line, cond);
        } else if (kind == VAS_INCOMPLETE) {
                fprintf(stderr,
                    "Incomplete code in %s(), %s line %d:\n",
                    func, file, line);
        } else if (kind == VAS_WRONG) {
                fprintf(stderr,
                    "Wrong turn in %s(), %s line %d: %s\n",
                    func, file, line, cond);
        } else {
                fprintf(stderr,
                    "Assert error in %s(), %s line %d:\n"
                    "  Condition(%s) not true.\n",
                    func, file, line, cond);
        }
        if (err) {
                fprintf(stderr,
                    "  errno = %d (%s)\n", err, strerror(err));
        }

        if (VBT_dump(sizeof buf, buf) < 0) {
                bprintf(buf, "Failed to print backtrace: %d (%s)",
                    errno, strerror(errno));
        }

        syslog(LOG_DEBUG, "%s", buf);
}

void v_noreturn_
VAS_Fail(const char *func, const char *file, int line,
    const char *cond, enum vas_e kind)
{

        if (VAS_Fail_Func != NULL)
                VAS_Fail_Func(func, file, line, cond, kind);
        else
                vas_default(func, file, line, cond, kind);
        abort();
}

		varnish-cache/lib/libvarnish/vas.c
0		/*-
1		* Copyright (c) 2006 Verdens Gang AS
2		* Copyright (c) 2006-2016 Varnish Software AS
3		* All rights reserved.
4		*
5		* Author: Poul-Henning Kamp <phk@phk.freebsd.dk>
6		*
7		* SPDX-License-Identifier: BSD-2-Clause
8		*
9		* Redistribution and use in source and binary forms, with or without
10		* modification, are permitted provided that the following conditions
11		* are met:
12		* 1. Redistributions of source code must retain the above copyright
13		* notice, this list of conditions and the following disclaimer.
14		* 2. Redistributions in binary form must reproduce the above copyright
15		* notice, this list of conditions and the following disclaimer in the
16		* documentation and/or other materials provided with the distribution.
17		*
18		* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19		* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20		* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21		* ARE DISCLAIMED. IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
22		* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23		* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24		* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25		* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26		* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27		* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28		* SUCH DAMAGE.
29		*
30		* This is the default backend function for libvarnish' assert facilities.
31		*/
32
33		#include "config.h"
34
35		#include <stdio.h>
36		#include <stdlib.h>
37		#include <string.h>
38		#include <syslog.h>
39
40		#include "vdef.h"
41		#include "vbt.h"
42
43		#include "vas.h"
44
45		const char *
46	2018	VAS_errtxt(int e)
47		{
48		const char *p;
49	2018	int oerrno = errno;
50
51	2018	p = strerror(e);
52	2018	if (p != NULL)
53	2018	return (p);
54
55	0	errno = oerrno;
56	0	return ("strerror(3) returned NULL");
57	2018	}
58
59		vas_f *VAS_Fail_Func v_noreturn_;
60
61		static void
62	0	vas_default(const char func, const char file, int line,
63		const char *cond, enum vas_e kind)
64		{
65	0	int err = errno;
66		char buf[4096];
67
68	0	if (kind == VAS_MISSING) {
69	0	fprintf(stderr,
70		"Missing error handling code in %s(), %s line %d:\n"
71		" Condition(%s) not true.\n",
72	0	func, file, line, cond);
73	0	} else if (kind == VAS_INCOMPLETE) {
74	0	fprintf(stderr,
75		"Incomplete code in %s(), %s line %d:\n",
76	0	func, file, line);
77	0	} else if (kind == VAS_WRONG) {
78	0	fprintf(stderr,
79		"Wrong turn in %s(), %s line %d: %s\n",
80	0	func, file, line, cond);
81	0	} else {
82	0	fprintf(stderr,
83		"Assert error in %s(), %s line %d:\n"
84		" Condition(%s) not true.\n",
85	0	func, file, line, cond);
86		}
87	0	if (err) {
88	0	fprintf(stderr,
89	0	" errno = %d (%s)\n", err, strerror(err));
90	0	}
91
92	0	if (VBT_dump(sizeof buf, buf) < 0) {
93	0	bprintf(buf, "Failed to print backtrace: %d (%s)",
94		errno, strerror(errno));
95	0	}
96
97	0	syslog(LOG_DEBUG, "%s", buf);
98	0	}
99
100		void v_noreturn_
101	12	VAS_Fail(const char func, const char file, int line,
102		const char *cond, enum vas_e kind)
103		{
104
105	12	if (VAS_Fail_Func != NULL)
106	12	VAS_Fail_Func(func, file, line, cond, kind);
107		else
108	0	vas_default(func, file, line, cond, kind);
109	0	abort();
110		}