1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /*
28 * Logging support for the FPS Daemon
29 */
30
31 #include <stdio.h>
32 #include <stdarg.h>
33 #include <string.h>
34 #include <errno.h>
35 #include <syslog.h>
36 #include <stdlib.h>
37 #include <pthread.h>
38 #include <synch.h>
39 #include <unistd.h>
40
41 #include <fpsapi.h>
42
43 #include "fpsd.h"
44 #include "messages.h"
45
46 #define FPSD_MAX_MSG_HDR_LEN 256
47 #define FPSD_MAX_TIME_LEN 32
48
49 pthread_mutex_t log_mutex;
50
51 static char *log_prio_str[] = {
52 "ERROR: ", /* LOG_ERR */
53 "WARNING: ", /* LOG_WARNING */
54 "INFO: ", /* LOG_INFO */
55 "DEBUG: " /* LOG_DEBUG */
56 };
57
58 /*
59 * Generate a timestamp string in the provided buffer.
60 * If any errors are encountered, the function returns
61 * with the buffer containing an empty string.
62 */
63 static void
fpsd_timestamp(char * buf,size_t buflen)64 fpsd_timestamp(char *buf, size_t buflen)
65 {
66 struct tm ltime;
67 struct timeval now;
68
69 if ((buf == NULL) || (buflen == 0))
70 return;
71
72 buf[0] = '\0';
73
74 if (gettimeofday(&now, NULL) != 0) {
75 (void) fprintf(stderr, GET_TIME_FAILED,
76 strerror(errno));
77 return;
78 }
79
80 if (localtime_r(&now.tv_sec, <ime) == NULL) {
81 (void) fprintf(stderr, LOCAL_TIME_FAILED,
82 strerror(errno));
83 return;
84 }
85
86 if (strftime(buf, buflen, "%b %e %T ", <ime) == 0) {
87 (void) fprintf(stderr, STRFTIME_FAILED, buflen);
88 /*
89 * On failure, the contents of the buffer
90 * are indeterminate. Restore it to a known
91 * state before returning.
92 */
93 buf[0] = '\0';
94 }
95 }
96
97 static void
fpsd_log_msg(int prio,const char * fmt,va_list vap)98 fpsd_log_msg(int prio, const char *fmt, va_list vap)
99 {
100 char msgbuf[FPSD_MAX_MSG_HDR_LEN];
101 char timebuf[FPSD_MAX_TIME_LEN] = "";
102
103 if ((prio > debug_level) || (prio < 0))
104 return;
105 if ((fpsd.d_fg) || (!fpsd.d_daemon)) {
106 /* generate a timestamp for output */
107 fpsd_timestamp(timebuf, sizeof (timebuf));
108 (void) snprintf(msgbuf, sizeof (msgbuf), "%s %s %s ",
109 timebuf, FPS_DAEMON_NAME, log_prio_str[prio]);
110 }
111
112 /* In debug mode, messages will be sent to the controlling terminal */
113
114 if (fpsd.d_fg || !fpsd.d_daemon) {
115 (void) fprintf(stderr, PRINT_BUFFER, msgbuf);
116 (void) vfprintf(stderr, fmt, vap);
117 return;
118 }
119
120 switch (prio) {
121
122 case FPS_ERROR: /* Log into syslog */
123 vsyslog(LOG_ERR, fmt, vap);
124 break;
125
126 case FPS_WARNING:
127 vsyslog(LOG_WARNING, fmt, vap);
128 break;
129
130 case FPS_INFO:
131 vsyslog(LOG_INFO, fmt, vap);
132 break;
133
134 case FPS_DEBUG:
135 vsyslog(LOG_DEBUG, fmt, vap);
136 break;
137 }
138
139 }
140
141 void
fpsd_message(int return_code,int msg_type,char * fmt,...)142 fpsd_message(int return_code, int msg_type, char *fmt, ...)
143 {
144 va_list vap;
145 (void) pthread_mutex_lock(&log_mutex);
146 va_start(vap, fmt);
147 fpsd_log_msg(msg_type, fmt, vap);
148 va_end(vap);
149 (void) pthread_mutex_unlock(&log_mutex);
150
151 if (return_code > 0) {
152 terminate_process();
153 _exit(return_code);
154 }
155 }
156