/*

 * 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.

 */

/*	Copyright (c) 1988 AT&T	*/

/*	  All Rights Reserved  	*/

#pragma ident	"%Z%%M%	%I%	%E% SMI"

#pragma	weak _addsev = addsev

#include "lint.h"

#include "mtlib.h"

#include "libc.h"

#include <stdlib.h>

#include <pfmt.h>

#include <thread.h>

#include "pfmt_data.h"

#include <sys/types.h>

#include <string.h>

#include <synch.h>

int

addsev(int severity, const char *string)

{

	int i, firstfree;

	void *new;

	/* Cannot redefine standard severity */

	if ((severity <= 4) || (severity > 255))

		return (-1);

	/* Locate severity in table */

	lrw_wrlock(&_rw_pfmt_sev_tab);

	for (i = 0, firstfree = -1; i < __pfmt_nsev; i++) {

		if (__pfmt_sev_tab[i].severity == 0 && firstfree == -1)

			firstfree = i;

		if (__pfmt_sev_tab[i].severity == severity)

			break;

	}

	if (i == __pfmt_nsev) {

		if (string == NULL)	/* Removing non-existing severity */

			return (0);

		if (firstfree != -1)	/* Re-use old entry */

			i = firstfree;

		else {

			/* Allocate new entry */

			new = libc_realloc(__pfmt_sev_tab,

			    sizeof (struct sev_tab) * (__pfmt_nsev + 1));

			if (new == NULL) {

				lrw_unlock(&_rw_pfmt_sev_tab);

				return (-1);

			}

			__pfmt_nsev++;

			__pfmt_sev_tab = new;

		}

	}

	if (string == NULL) {

		if (__pfmt_sev_tab[i].string)

			libc_free(__pfmt_sev_tab[i].string);

		__pfmt_sev_tab[i].severity = 0;

		__pfmt_sev_tab[i].string = NULL;

		lrw_unlock(&_rw_pfmt_sev_tab);

		return (0);

	}

	new = libc_realloc(__pfmt_sev_tab[i].string, strlen(string) + 1);

	if (new == NULL) {

		lrw_unlock(&_rw_pfmt_sev_tab);

		return (-1);

	}

	__pfmt_sev_tab[i].severity = severity;

	__pfmt_sev_tab[i].string = new;

	(void) strcpy(__pfmt_sev_tab[i].string, string);

	lrw_unlock(&_rw_pfmt_sev_tab);

	return (0);

}