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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	sbin/slaacd/log.c	Lines:	26	79	32.9 %
Date:	2017-11-07	Branches:	5	18	27.8 %


/*	$OpenBSD: log.c,v 1.1 2017/06/03 10:00:29 florian Exp $	*/

/*
 * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <syslog.h>
#include <errno.h>
#include <time.h>

#include "log.h"

static int		 debug;
static int		 verbose;
static const char	*log_procname;

void
log_init(int n_debug, int facility)
{
	extern char	*__progname;

	debug = n_debug;
	verbose = n_debug;
	log_procinit(__progname);

	if (!debug)
		openlog(__progname, LOG_PID | LOG_NDELAY, facility);

	tzset();
}

void
log_procinit(const char *procname)
{
	if (procname != NULL)
		log_procname = procname;
}

void
log_setverbose(int v)
{
	verbose = v;
}

int
log_getverbose(void)
{
	return (verbose);
}

void
logit(int pri, const char *fmt, ...)
{
	va_list	ap;

	va_start(ap, fmt);
	vlog(pri, fmt, ap);
	va_end(ap);
}

void
vlog(int pri, const char *fmt, va_list ap)
{
	char	*nfmt;
	int	 saved_errno = errno;

	if (debug) {
		/* best effort in out of mem situations */
		if (asprintf(&nfmt, "%s\n", fmt) == -1) {
			vfprintf(stderr, fmt, ap);
			fprintf(stderr, "\n");
		} else {
			vfprintf(stderr, nfmt, ap);
			free(nfmt);
		}
		fflush(stderr);
	} else
		vsyslog(pri, fmt, ap);

	errno = saved_errno;
}

void
log_warn(const char *emsg, ...)
{
	char		*nfmt;
	va_list		 ap;
	int		 saved_errno = errno;

	/* best effort to even work in out of memory situations */
	if (emsg == NULL)
		logit(LOG_ERR, "%s", strerror(saved_errno));
	else {
		va_start(ap, emsg);

		if (asprintf(&nfmt, "%s: %s", emsg,
		    strerror(saved_errno)) == -1) {
			/* we tried it... */
			vlog(LOG_ERR, emsg, ap);
			logit(LOG_ERR, "%s", strerror(saved_errno));
		} else {
			vlog(LOG_ERR, nfmt, ap);
			free(nfmt);
		}
		va_end(ap);
	}

	errno = saved_errno;
}

void
log_warnx(const char *emsg, ...)
{
	va_list	 ap;

	va_start(ap, emsg);
	vlog(LOG_ERR, emsg, ap);
	va_end(ap);
}

void
log_info(const char *emsg, ...)
{
	va_list	 ap;

	va_start(ap, emsg);
	vlog(LOG_INFO, emsg, ap);
	va_end(ap);
}

void
log_debug(const char *emsg, ...)
{
	va_list	 ap;

	if (verbose) {
		va_start(ap, emsg);
		vlog(LOG_DEBUG, emsg, ap);
		va_end(ap);
	}
}

static void
vfatalc(int code, const char *emsg, va_list ap)
{
	static char	s[BUFSIZ];
	const char	*sep;

	if (emsg != NULL) {
		(void)vsnprintf(s, sizeof(s), emsg, ap);
		sep = ": ";
	} else {
		s[0] = '\0';
		sep = "";
	}
	if (code)
		logit(LOG_CRIT, "fatal in %s: %s%s%s",
		    log_procname, s, sep, strerror(code));
	else
		logit(LOG_CRIT, "fatal in %s%s%s", log_procname, sep, s);
}

void
fatal(const char *emsg, ...)
{
	va_list	ap;

	va_start(ap, emsg);
	vfatalc(errno, emsg, ap);
	va_end(ap);
	exit(1);
}

void
fatalx(const char *emsg, ...)
{
	va_list	ap;

	va_start(ap, emsg);
	vfatalc(0, emsg, ap);
	va_end(ap);
	exit(1);
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: log.c,v 1.1 2017/06/03 10:00:29 florian Exp $ */
2
3			/*
4			* Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
5			*
6			* Permission to use, copy, modify, and distribute this software for any
7			* purpose with or without fee is hereby granted, provided that the above
8			* copyright notice and this permission notice appear in all copies.
9			*
10			* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11			* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12			* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13			* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14			* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15			* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16			* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17			*/
18
19			#include <stdio.h>
20			#include <stdlib.h>
21			#include <stdarg.h>
22			#include <string.h>
23			#include <syslog.h>
24			#include <errno.h>
25			#include <time.h>
26
27			#include "log.h"
28
29			static int debug;
30			static int verbose;
31			static const char *log_procname;
32
33			void
34			log_init(int n_debug, int facility)
35			{
36			extern char *__progname;
37
38		36	debug = n_debug;
39		18	verbose = n_debug;
40		18	log_procinit(__progname);
41
42	✓✓	18	if (!debug)
43		9	openlog(__progname, LOG_PID \| LOG_NDELAY, facility);
44
45		18	tzset();
46		18	}
47
48			void
49			log_procinit(const char *procname)
50			{
51	✓✗	54	if (procname != NULL)
52		27	log_procname = procname;
53		27	}
54
55			void
56			log_setverbose(int v)
57			{
58		36	verbose = v;
59		18	}
60
61			int
62			log_getverbose(void)
63			{
64			return (verbose);
65			}
66
67			void
68			logit(int pri, const char *fmt, ...)
69			{
70			va_list ap;
71
72			va_start(ap, fmt);
73			vlog(pri, fmt, ap);
74			va_end(ap);
75			}
76
77			void
78			vlog(int pri, const char *fmt, va_list ap)
79			{
80		36	char *nfmt;
81		18	int saved_errno = errno;
82
83	✗✓	18	if (debug) {
84			/* best effort in out of mem situations */
85			if (asprintf(&nfmt, "%s\n", fmt) == -1) {
86			vfprintf(stderr, fmt, ap);
87			fprintf(stderr, "\n");
88			} else {
89			vfprintf(stderr, nfmt, ap);
90			free(nfmt);
91			}
92			fflush(stderr);
93			} else
94		18	vsyslog(pri, fmt, ap);
95
96		18	errno = saved_errno;
97		18	}
98
99			void
100			log_warn(const char *emsg, ...)
101			{
102			char *nfmt;
103			va_list ap;
104			int saved_errno = errno;
105
106			/* best effort to even work in out of memory situations */
107			if (emsg == NULL)
108			logit(LOG_ERR, "%s", strerror(saved_errno));
109			else {
110			va_start(ap, emsg);
111
112			if (asprintf(&nfmt, "%s: %s", emsg,
113			strerror(saved_errno)) == -1) {
114			/* we tried it... */
115			vlog(LOG_ERR, emsg, ap);
116			logit(LOG_ERR, "%s", strerror(saved_errno));
117			} else {
118			vlog(LOG_ERR, nfmt, ap);
119			free(nfmt);
120			}
121			va_end(ap);
122			}
123
124			errno = saved_errno;
125			}
126
127			void
128			log_warnx(const char *emsg, ...)
129			{
130			va_list ap;
131
132			va_start(ap, emsg);
133			vlog(LOG_ERR, emsg, ap);
134			va_end(ap);
135			}
136
137			void
138			log_info(const char *emsg, ...)
139			{
140		36	va_list ap;
141
142		18	va_start(ap, emsg);
143		18	vlog(LOG_INFO, emsg, ap);
144		18	va_end(ap);
145		18	}
146
147			void
148			log_debug(const char *emsg, ...)
149			{
150		18	va_list ap;
151
152	✗✓	9	if (verbose) {
153			va_start(ap, emsg);
154			vlog(LOG_DEBUG, emsg, ap);
155			va_end(ap);
156			}
157		9	}
158
159			static void
160			vfatalc(int code, const char *emsg, va_list ap)
161			{
162			static char s[BUFSIZ];
163			const char *sep;
164
165			if (emsg != NULL) {
166			(void)vsnprintf(s, sizeof(s), emsg, ap);
167			sep = ": ";
168			} else {
169			s[0] = '\0';
170			sep = "";
171			}
172			if (code)
173			logit(LOG_CRIT, "fatal in %s: %s%s%s",
174			log_procname, s, sep, strerror(code));
175			else
176			logit(LOG_CRIT, "fatal in %s%s%s", log_procname, sep, s);
177			}
178
179			void
180			fatal(const char *emsg, ...)
181			{
182			va_list ap;
183
184			va_start(ap, emsg);
185			vfatalc(errno, emsg, ap);
186			va_end(ap);
187			exit(1);
188			}
189
190			void
191			fatalx(const char *emsg, ...)
192			{
193			va_list ap;
194
195			va_start(ap, emsg);
196			vfatalc(0, emsg, ap);
197			va_end(ap);
198			exit(1);
199			}