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
144
145
146
147
148
149
150
|
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* Logging support for the DR Daemon
*/
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <errno.h>
#include <syslog.h>
#include "drd.h"
#define DRD_MAX_MSG_LEN 512
#define DRD_MAX_TIME_LEN 32
static char *log_prio_str[] = {
"EMERG: ", /* LOG_EMERG */
"ALERT: ", /* LOG_ALERT */
"CRIT: ", /* LOG_CRIT */
"ERROR: ", /* LOG_ERR */
"WARNING: ", /* LOG_WARNING */
"NOTICE: ", /* LOG_NOTICE */
"INFO: ", /* LOG_INFO */
"" /* LOG_DEBUG */
};
/*
* Generate a timestamp string in the provided buffer.
* If any errors are encountered, the function returns
* with the buffer containing an empty string.
*/
static void
drd_timestamp(char *buf, size_t buflen)
{
struct tm ltime;
struct timeval now;
if ((buf == NULL) || (buflen == 0))
return;
buf[0] = '\0';
if (gettimeofday(&now, NULL) != 0) {
(void) fprintf(stderr, "gettimeofday failed: %s\n",
strerror(errno));
return;
}
if (localtime_r(&now.tv_sec, <ime) == NULL) {
(void) fprintf(stderr, "localtime_r failed: %s\n",
strerror(errno));
return;
}
if (strftime(buf, buflen, "%b %e %T ", <ime) == 0) {
(void) fprintf(stderr, "strftime failed: buffer[%d] too "
"small\n", buflen);
/*
* On failure, the contents of the buffer
* are indeterminate. Restore it to a known
* state before returning.
*/
buf[0] = '\0';
}
}
static void
drd_log_msg(int prio, char *fmt, va_list vap)
{
char msgbuf[DRD_MAX_MSG_LEN];
char timebuf[DRD_MAX_TIME_LEN] = "";
/* generate a timestamp for the SMF log */
drd_timestamp(timebuf, sizeof (timebuf));
(void) vsnprintf(msgbuf, DRD_MAX_MSG_LEN, fmt, vap);
/*
* Print the message to stderr. In daemon mode, it
* will be sent to the SMF log. In standalone mode,
* it will be sent to the controlling terminal.
*/
(void) fprintf(stderr, "%s%s%s\n", timebuf, log_prio_str[prio], msgbuf);
if (drd_daemonized)
syslog(prio, msgbuf);
}
void
drd_err(char *fmt, ...)
{
va_list vap;
va_start(vap, fmt);
drd_log_msg(LOG_ERR, fmt, vap);
va_end(vap);
}
void
drd_info(char *fmt, ...)
{
va_list vap;
va_start(vap, fmt);
drd_log_msg(LOG_INFO, fmt, vap);
va_end(vap);
}
void
drd_dbg(char *fmt, ...)
{
va_list vap;
if (!drd_debug) {
/* not debugging */
return;
}
va_start(vap, fmt);
drd_log_msg(LOG_DEBUG, fmt, vap);
va_end(vap);
}
|
