OpenSolaris_b135/cmd/isns/isnsd/log.c

/*
 * 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.
 */

#include <stdio.h>
#include <stdarg.h>
#include <sys/types.h>
#include <sys/varargs.h>
#include <errno.h>
#include <string.h>

#include "isns_log.h"

extern int dbg_level;

#define	MAX_LOG_LEN 2048

void
isnslog(
	int level,
	const char *routine,
	char *msg,
	...
)
{
	char header[MAX_LOG_LEN+1];
	char message[MAX_LOG_LEN+1];
	int oldErrno = 0;
	va_list ap;

	oldErrno = errno;

	if (dbg_level >= level) {
		(void) memset(&header,  0, MAX_LOG_LEN+1);
		(void) memset(&message, 0, MAX_LOG_LEN+1);

		va_start(ap, msg);
		(void) snprintf(header, MAX_LOG_LEN, "%s: %s: %s",
		    "iSNS Daemon", routine, msg);

		/* LINTED E_SEC_PRINTF_VAR_FMT */
		(void) vsnprintf(message, MAX_LOG_LEN, header, ap);
		/* LINTED E_SEC_PRINTF_VAR_FMT */
		syslog(LOG_DAEMON | level, message);

		va_end(ap);
	}

	errno = oldErrno;
}