1*134e1779SJakub Wojciech Klama /*
2*134e1779SJakub Wojciech Klama * Copyright 2016 Jakub Klama <jceel@FreeBSD.org>
3*134e1779SJakub Wojciech Klama * All rights reserved
4*134e1779SJakub Wojciech Klama *
5*134e1779SJakub Wojciech Klama * Redistribution and use in source and binary forms, with or without
6*134e1779SJakub Wojciech Klama * modification, are permitted providing that the following conditions
7*134e1779SJakub Wojciech Klama * are met:
8*134e1779SJakub Wojciech Klama * 1. Redistributions of source code must retain the above copyright
9*134e1779SJakub Wojciech Klama * notice, this list of conditions and the following disclaimer.
10*134e1779SJakub Wojciech Klama * 2. Redistributions in binary form must reproduce the above copyright
11*134e1779SJakub Wojciech Klama * notice, this list of conditions and the following disclaimer in the
12*134e1779SJakub Wojciech Klama * documentation and/or other materials provided with the distribution.
13*134e1779SJakub Wojciech Klama *
14*134e1779SJakub Wojciech Klama * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15*134e1779SJakub Wojciech Klama * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
16*134e1779SJakub Wojciech Klama * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17*134e1779SJakub Wojciech Klama * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
18*134e1779SJakub Wojciech Klama * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19*134e1779SJakub Wojciech Klama * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20*134e1779SJakub Wojciech Klama * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21*134e1779SJakub Wojciech Klama * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
22*134e1779SJakub Wojciech Klama * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
23*134e1779SJakub Wojciech Klama * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
24*134e1779SJakub Wojciech Klama * POSSIBILITY OF SUCH DAMAGE.
25*134e1779SJakub Wojciech Klama *
26*134e1779SJakub Wojciech Klama */
27*134e1779SJakub Wojciech Klama
28*134e1779SJakub Wojciech Klama #include <stdio.h>
29*134e1779SJakub Wojciech Klama #include <stdlib.h>
30*134e1779SJakub Wojciech Klama #include <stdarg.h>
31*134e1779SJakub Wojciech Klama #include <string.h>
32*134e1779SJakub Wojciech Klama #include "log.h"
33*134e1779SJakub Wojciech Klama
34*134e1779SJakub Wojciech Klama static const char *l9p_log_level_names[] = {
35*134e1779SJakub Wojciech Klama "DEBUG",
36*134e1779SJakub Wojciech Klama "INFO",
37*134e1779SJakub Wojciech Klama "WARN",
38*134e1779SJakub Wojciech Klama "ERROR"
39*134e1779SJakub Wojciech Klama };
40*134e1779SJakub Wojciech Klama
41*134e1779SJakub Wojciech Klama void
l9p_logf(enum l9p_log_level level,const char * func,const char * fmt,...)42*134e1779SJakub Wojciech Klama l9p_logf(enum l9p_log_level level, const char *func, const char *fmt, ...)
43*134e1779SJakub Wojciech Klama {
44*134e1779SJakub Wojciech Klama const char *dest = NULL;
45*134e1779SJakub Wojciech Klama static FILE *stream = NULL;
46*134e1779SJakub Wojciech Klama va_list ap;
47*134e1779SJakub Wojciech Klama
48*134e1779SJakub Wojciech Klama if (stream == NULL) {
49*134e1779SJakub Wojciech Klama dest = getenv("LIB9P_LOGGING");
50*134e1779SJakub Wojciech Klama if (dest == NULL)
51*134e1779SJakub Wojciech Klama return;
52*134e1779SJakub Wojciech Klama else if (!strcmp(dest, "stderr"))
53*134e1779SJakub Wojciech Klama stream = stderr;
54*134e1779SJakub Wojciech Klama else {
55*134e1779SJakub Wojciech Klama stream = fopen(dest, "a");
56*134e1779SJakub Wojciech Klama if (stream == NULL)
57*134e1779SJakub Wojciech Klama return;
58*134e1779SJakub Wojciech Klama }
59*134e1779SJakub Wojciech Klama }
60*134e1779SJakub Wojciech Klama
61*134e1779SJakub Wojciech Klama va_start(ap, fmt);
62*134e1779SJakub Wojciech Klama fprintf(stream, "[%s]\t %s: ", l9p_log_level_names[level], func);
63*134e1779SJakub Wojciech Klama vfprintf(stream, fmt, ap);
64*134e1779SJakub Wojciech Klama fprintf(stream, "\n");
65*134e1779SJakub Wojciech Klama fflush(stream);
66*134e1779SJakub Wojciech Klama va_end(ap);
67*134e1779SJakub Wojciech Klama }
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