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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 2009 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/*
* Logging support for the LDoms Agent daemon
*/
#include <errno.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include <syslog.h>
#include <sys/types.h>
#define LDMA_MAX_MSG_LEN 512
#define LDMA_MAX_TIME_LEN 32
extern boolean_t ldma_debug;
extern boolean_t ldma_daemon;
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 */
"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
ldma_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
ldma_log_msg(int prio, char *module, char *fmt, va_list vap)
{
char msgbuf[LDMA_MAX_MSG_LEN];
char timebuf[LDMA_MAX_TIME_LEN] = "";
/* generate a timestamp for the SMF log */
ldma_timestamp(timebuf, sizeof (timebuf));
/* LINTED E_SEC_PRINTF_VAR_FMT */
(void) vsnprintf(msgbuf, LDMA_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: %s\n", timebuf, module,
log_prio_str[prio], msgbuf);
if (ldma_daemon && prio != LOG_DEBUG) {
/* LINTED E_SEC_PRINTF_VAR_FMT */
syslog(prio, msgbuf);
}
}
void
ldma_err(char *module, char *fmt, ...)
{
va_list vap;
va_start(vap, fmt);
ldma_log_msg(LOG_ERR, module, fmt, vap);
va_end(vap);
}
void
ldma_info(char *module, char *fmt, ...)
{
va_list vap;
va_start(vap, fmt);
ldma_log_msg(LOG_INFO, module, fmt, vap);
va_end(vap);
}
void
ldma_dbg(char *module, char *fmt, ...)
{
va_list vap;
if (!ldma_debug) {
/* not debugging */
return;
}
va_start(vap, fmt);
ldma_log_msg(LOG_DEBUG, module, fmt, vap);
va_end(vap);
}
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