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/*
* 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 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* Logging support for the FPS Daemon
*/
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <errno.h>
#include <syslog.h>
#include <stdlib.h>
#include <pthread.h>
#include <synch.h>
#include <unistd.h>
#include <fpsapi.h>
#include "fpsd.h"
#include "messages.h"
#define FPSD_MAX_MSG_HDR_LEN 256
#define FPSD_MAX_TIME_LEN 32
pthread_mutex_t log_mutex;
static char *log_prio_str[] = {
"ERROR: ", /* LOG_ERR */
"WARNING: ", /* LOG_WARNING */
"INFO: ", /* LOG_INFO */
"DEBUG: " /* 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
fpsd_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, GET_TIME_FAILED,
strerror(errno));
return;
}
if (localtime_r(&now.tv_sec, <ime) == NULL) {
(void) fprintf(stderr, LOCAL_TIME_FAILED,
strerror(errno));
return;
}
if (strftime(buf, buflen, "%b %e %T ", <ime) == 0) {
(void) fprintf(stderr, STRFTIME_FAILED, buflen);
/*
* On failure, the contents of the buffer
* are indeterminate. Restore it to a known
* state before returning.
*/
buf[0] = '\0';
}
}
static void
fpsd_log_msg(int prio, const char *fmt, va_list vap)
{
char msgbuf[FPSD_MAX_MSG_HDR_LEN];
char timebuf[FPSD_MAX_TIME_LEN] = "";
if ((prio > debug_level) || (prio < 0))
return;
if ((fpsd.d_fg) || (!fpsd.d_daemon)) {
/* generate a timestamp for output */
fpsd_timestamp(timebuf, sizeof (timebuf));
(void) snprintf(msgbuf, sizeof (msgbuf), "%s %s %s ",
timebuf, FPS_DAEMON_NAME, log_prio_str[prio]);
}
/* In debug mode, messages will be sent to the controlling terminal */
if (fpsd.d_fg || !fpsd.d_daemon) {
(void) fprintf(stderr, PRINT_BUFFER, msgbuf);
(void) vfprintf(stderr, fmt, vap);
return;
}
switch (prio) {
case FPS_ERROR: /* Log into syslog */
vsyslog(LOG_ERR, fmt, vap);
break;
case FPS_WARNING:
vsyslog(LOG_WARNING, fmt, vap);
break;
case FPS_INFO:
vsyslog(LOG_INFO, fmt, vap);
break;
case FPS_DEBUG:
vsyslog(LOG_DEBUG, fmt, vap);
break;
}
}
void
fpsd_message(int return_code, int msg_type, char *fmt, ...)
{
va_list vap;
(void) pthread_mutex_lock(&log_mutex);
va_start(vap, fmt);
fpsd_log_msg(msg_type, fmt, vap);
va_end(vap);
(void) pthread_mutex_unlock(&log_mutex);
if (return_code > 0) {
terminate_process();
_exit(return_code);
}
}
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