xref: /illumos-gate/usr/src/common/mdesc/mdesc_getpropstr.c (revision c40a6cd785e883b3f052b122c332e21174fc1871)
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 #include <sys/types.h>
28 #include <sys/mdesc.h>
29 #include <sys/mdesc_impl.h>
30 
31 int
md_get_prop_str(md_t * ptr,mde_cookie_t node,char * namep,char ** strp)32 md_get_prop_str(md_t *ptr, mde_cookie_t node, char *namep, char **strp)
33 {
34 	mde_str_cookie_t prop_name;
35 	md_impl_t	*mdp;
36 	mde_cookie_t	elem;
37 
38 	mdp = (md_impl_t *)ptr;
39 
40 	if (node == MDE_INVAL_ELEM_COOKIE) {
41 		return (-1);
42 	}
43 
44 	prop_name = md_find_name(ptr, namep);
45 	if (prop_name == MDE_INVAL_STR_COOKIE) {
46 		return (-1);
47 	}
48 
49 	elem = md_find_node_prop(mdp, node, prop_name, MDET_PROP_STR);
50 
51 	if (elem != MDE_INVAL_ELEM_COOKIE) {
52 		md_element_t *mdep;
53 		mdep = &(mdp->mdep[(int)elem]);
54 
55 		*strp = (char *)(mdp->datap+
56 			MDE_PROP_DATA_OFFSET(mdep));
57 		return (0);
58 	}
59 
60 	return (-1);	/* no such property name */
61 }
62