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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 2010 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#include <pthread.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <syslog.h>
#include "util.h"
/*
* logging.c - contains various logging functions.
*/
boolean_t debug = B_TRUE;
/*
* This idea for having this function is so that you can drop a dtrace probe
* here and trace complete strings (not just those containing formatting). Its
* important that we actually format the debug strings so we could trace them
* even if we choose not to send them to syslog.
*/
static void
log_out(int severity, const char *str)
{
if (severity == LOG_DEBUG && !debug)
return;
syslog(severity, str);
}
static void
log_format(int severity, const char *fmt, va_list ap, char *buf, int bufsize)
{
int offset;
char vbuf[256];
if (buf == NULL) {
buf = vbuf;
bufsize = sizeof (vbuf);
}
offset = snprintf(buf, bufsize, "%d: ", pthread_self());
(void) vsnprintf(buf + offset, bufsize - offset, fmt, ap);
log_out(severity, buf);
}
/*
* This function takes a syslog severity and uses it to determine what to do
* with the message (currently send it to syslog).
*/
void
nlog(int severity, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
log_format(severity, fmt, ap, NULL, 0);
va_end(ap);
}
void
pfail(const char *fmt, ...)
{
char *msg;
va_list ap;
msg = malloc(256);
va_start(ap, fmt);
log_format(LOG_ERR, fmt, ap, msg, 256);
va_end(ap);
if (msg == NULL)
msg = "ran out of memory exiting. see log.";
(void) puts(msg);
exit(EXIT_FAILURE);
}
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