/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (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 2005 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

#include <sys/types.h>
#include <sys/param.h>
#include <sys/mdesc.h>
#include <sys/mdesc_impl.h>

mde_cookie_t
md_find_node_prop(md_impl_t *mdp,
        mde_cookie_t node,
        mde_str_cookie_t prop_name,
        int tag_type)
{
        md_element_t *mdep;
        int idx;

        if (node == MDE_INVAL_ELEM_COOKIE ||
            prop_name == MDE_INVAL_STR_COOKIE) {
                return (MDE_INVAL_ELEM_COOKIE);
        }

        idx = (int)node;
        mdep = &(mdp->mdep[idx]);

                /* Skip over any empty elements */
        while (MDE_TAG(mdep) == MDET_NULL) {
                idx++;
                mdep++;
        }

                /* see if cookie is infact a node */
        if (MDE_TAG(mdep) != MDET_NODE) {
                return (MDE_INVAL_ELEM_COOKIE);
        }

        /*
         * Simply walk the elements in the node
         * looking for a property with a matching name.
         */

        for (idx++, mdep++; MDE_TAG(mdep) != MDET_NODE_END; idx++, mdep++) {
                if (MDE_TAG(mdep) == tag_type) {
                        if (MDE_NAME(mdep) == prop_name) {
                                return ((mde_cookie_t)idx);
                        }
                }
        }

        return (MDE_INVAL_ELEM_COOKIE); /* no such property name */
}