1// SPDX-License-Identifier: LGPL-2.1+
2// Copyright (C) 2022, Linaro Ltd - Daniel Lezcano <daniel.lezcano@linaro.org>
3#include <stdarg.h>
4#include <stdio.h>
5#include <string.h>
6#include <syslog.h>
7#include "log.h"
8
9static const char *__ident = "unknown";
10static int __options;
11
12static const char * const loglvl[] = {
13	[LOG_DEBUG]	= "DEBUG",
14	[LOG_INFO]	= "INFO",
15	[LOG_NOTICE]	= "NOTICE",
16	[LOG_WARNING]	= "WARN",
17	[LOG_ERR]	= "ERROR",
18	[LOG_CRIT]	= "CRITICAL",
19	[LOG_ALERT]	= "ALERT",
20	[LOG_EMERG]	= "EMERG",
21};
22
23int log_str2level(const char *lvl)
24{
25	int i;
26
27	for (i = 0; i < sizeof(loglvl) / sizeof(loglvl[LOG_DEBUG]); i++)
28		if (!strcmp(lvl, loglvl[i]))
29			return i;
30
31	return LOG_DEBUG;
32}
33
34extern void logit(int level, const char *format, ...)
35{
36	va_list args;
37
38	va_start(args, format);
39
40	if (__options & TO_SYSLOG)
41		vsyslog(level, format, args);
42
43	if (__options & TO_STDERR)
44		vfprintf(stderr, format, args);
45
46	if (__options & TO_STDOUT)
47		vfprintf(stdout, format, args);
48
49	va_end(args);
50}
51
52int log_init(int level, const char *ident, int options)
53{
54	if (!options)
55		return -1;
56
57	if (level > LOG_DEBUG)
58		return -1;
59
60	if (!ident)
61		return -1;
62
63	__ident = ident;
64	__options = options;
65
66	if (options & TO_SYSLOG) {
67		openlog(__ident, options | LOG_NDELAY, LOG_USER);
68		setlogmask(LOG_UPTO(level));
69	}
70
71	return 0;
72}
73
74void log_exit(void)
75{
76	closelog();
77}
78