xref: /titanic_41/usr/src/common/mdesc/mdesc_getpropval.c (revision 7c478bd95313f5f23a4c958a745db2134aa03244)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #pragma ident	"%Z%%M%	%I%	%E% SMI"
28 
29 
30 #include <sys/types.h>
31 #ifdef _KERNEL
32 #include <sys/systm.h>
33 #else
34 #include <strings.h>
35 #endif
36 
37 #include <sys/mdesc.h>
38 #include <sys/mdesc_impl.h>
39 
40 int
md_get_prop_val(md_t * ptr,mde_cookie_t node,char * namep,uint64_t * valp)41 md_get_prop_val(md_t *ptr, mde_cookie_t node, char *namep, uint64_t *valp)
42 {
43 	mde_str_cookie_t prop_name;
44 	md_impl_t	*mdp;
45 	mde_cookie_t	elem;
46 
47 	mdp = (md_impl_t *)ptr;
48 
49 	if (node == MDE_INVAL_ELEM_COOKIE) {
50 		return (-1);
51 	}
52 
53 	prop_name = md_find_name(ptr, namep);
54 	if (prop_name == MDE_INVAL_STR_COOKIE) {
55 		return (-1);
56 	}
57 
58 	elem = md_find_node_prop(mdp, node, prop_name, MDET_PROP_VAL);
59 
60 	if (elem != MDE_INVAL_ELEM_COOKIE) {
61 		md_element_t *mdep;
62 		mdep = &(mdp->mdep[(int)elem]);
63 
64 		*valp = MDE_PROP_VALUE(mdep);
65 		return (0);
66 	}
67 
68 	return (-1);	/* no such property name */
69 }
70