1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
|
/*
* kmod - log infrastructure
*
* Copyright (C) 2012-2013 ProFUSION embedded systems
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <syslog.h>
#include "libkmod.h"
#include "kmod.h"
static bool log_use_syslog;
static int log_priority = LOG_ERR;
static _always_inline_ const char *prio_to_str(int prio)
{
const char *prioname;
char buf[32];
switch (prio) {
case LOG_CRIT:
prioname = "FATAL";
break;
case LOG_ERR:
prioname = "ERROR";
break;
case LOG_WARNING:
prioname = "WARNING";
break;
case LOG_NOTICE:
prioname = "NOTICE";
break;
case LOG_INFO:
prioname = "INFO";
break;
case LOG_DEBUG:
prioname = "DEBUG";
break;
default:
snprintf(buf, sizeof(buf), "LOG-%03d", prio);
prioname = buf;
}
return prioname;
}
_printf_format_(6, 0)
static void log_kmod(void *data, int priority, const char *file, int line,
const char *fn, const char *format, va_list args)
{
const char *prioname = prio_to_str(priority);
char *str;
if (vasprintf(&str, format, args) < 0)
return;
if (log_use_syslog) {
#ifdef ENABLE_DEBUG
syslog(priority, "%s: %s:%d %s() %s", prioname, file, line,
fn, str);
#else
syslog(priority, "%s: %s", prioname, str);
#endif
} else {
#ifdef ENABLE_DEBUG
fprintf(stderr, "%s: %s: %s:%d %s() %s",
program_invocation_short_name, prioname, file, line,
fn, str);
#else
fprintf(stderr, "%s: %s: %s", program_invocation_short_name,
prioname, str);
#endif
}
free(str);
(void)data;
}
void log_open(bool use_syslog)
{
log_use_syslog = use_syslog;
if (log_use_syslog)
openlog(program_invocation_short_name, LOG_CONS, LOG_DAEMON);
}
void log_close(void)
{
if (log_use_syslog)
closelog();
}
void log_printf(int prio, const char *fmt, ...)
{
const char *prioname;
char *msg;
va_list args;
if (prio > log_priority)
return;
va_start(args, fmt);
if (vasprintf(&msg, fmt, args) < 0)
msg = NULL;
va_end(args);
if (msg == NULL)
return;
prioname = prio_to_str(prio);
if (log_use_syslog)
syslog(prio, "%s: %s", prioname, msg);
else
fprintf(stderr, "%s: %s: %s", program_invocation_short_name,
prioname, msg);
free(msg);
if (prio <= LOG_CRIT)
exit(EXIT_FAILURE);
}
void log_setup_kmod_log(struct kmod_ctx *ctx, int priority)
{
log_priority = priority;
kmod_set_log_priority(ctx, log_priority);
kmod_set_log_fn(ctx, log_kmod, NULL);
}
|
