1*1676Sjpk /*
2*1676Sjpk * CDDL HEADER START
3*1676Sjpk *
4*1676Sjpk * The contents of this file are subject to the terms of the
5*1676Sjpk * Common Development and Distribution License (the "License").
6*1676Sjpk * You may not use this file except in compliance with the License.
7*1676Sjpk *
8*1676Sjpk * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9*1676Sjpk * or http://www.opensolaris.org/os/licensing.
10*1676Sjpk * See the License for the specific language governing permissions
11*1676Sjpk * and limitations under the License.
12*1676Sjpk *
13*1676Sjpk * When distributing Covered Code, include this CDDL HEADER in each
14*1676Sjpk * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15*1676Sjpk * If applicable, add the following below this CDDL HEADER, with the
16*1676Sjpk * fields enclosed by brackets "[]" replaced with your own identifying
17*1676Sjpk * information: Portions Copyright [yyyy] [name of copyright owner]
18*1676Sjpk *
19*1676Sjpk * CDDL HEADER END
20*1676Sjpk */
21*1676Sjpk
22*1676Sjpk /*
23*1676Sjpk * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
24*1676Sjpk * Use is subject to license terms.
25*1676Sjpk */
26*1676Sjpk
27*1676Sjpk #pragma ident "%Z%%M% %I% %E% SMI"
28*1676Sjpk
29*1676Sjpk #include <stdlib.h>
30*1676Sjpk #include <errno.h>
31*1676Sjpk #include <tsol/label.h>
32*1676Sjpk #include <bsm/devices.h>
33*1676Sjpk
34*1676Sjpk
35*1676Sjpk /*
36*1676Sjpk * getdevicerange
37*1676Sjpk * Gets the minimum and maximum labels within which the device can
38*1676Sjpk * be used. If label range is not specified for the device in
39*1676Sjpk * device_allocate, defaults to admin_low and admin_high.
40*1676Sjpk * Returns malloc'ed blrange pointer, or NULL on any error.
41*1676Sjpk */
42*1676Sjpk blrange_t *
getdevicerange(const char * dev)43*1676Sjpk getdevicerange(const char *dev)
44*1676Sjpk {
45*1676Sjpk int err;
46*1676Sjpk char *lstr;
47*1676Sjpk devalloc_t *da;
48*1676Sjpk devmap_t *dm;
49*1676Sjpk blrange_t *range;
50*1676Sjpk
51*1676Sjpk errno = 0;
52*1676Sjpk if ((range = malloc(sizeof (blrange_t))) == NULL)
53*1676Sjpk return (NULL);
54*1676Sjpk if ((range->lower_bound = blabel_alloc()) == NULL) {
55*1676Sjpk free(range);
56*1676Sjpk return (NULL);
57*1676Sjpk }
58*1676Sjpk if ((range->upper_bound = blabel_alloc()) == NULL) {
59*1676Sjpk blabel_free(range->lower_bound);
60*1676Sjpk free(range);
61*1676Sjpk return (NULL);
62*1676Sjpk }
63*1676Sjpk
64*1676Sjpk /*
65*1676Sjpk * If an entry is found for the named device,
66*1676Sjpk * return its label range.
67*1676Sjpk */
68*1676Sjpk setdaent();
69*1676Sjpk if ((da = getdanam((char *)dev)) == NULL) {
70*1676Sjpk setdmapent();
71*1676Sjpk /* check for an actual device file */
72*1676Sjpk if ((dm = getdmapdev((char *)dev)) != NULL) {
73*1676Sjpk da = getdanam(dm->dmap_devname);
74*1676Sjpk freedmapent(dm);
75*1676Sjpk }
76*1676Sjpk enddmapent();
77*1676Sjpk }
78*1676Sjpk enddaent();
79*1676Sjpk if (da == NULL) {
80*1676Sjpk bsllow(range->lower_bound);
81*1676Sjpk bslhigh(range->upper_bound);
82*1676Sjpk } else {
83*1676Sjpk lstr = kva_match(da->da_devopts, DAOPT_MINLABEL);
84*1676Sjpk if (lstr == NULL) {
85*1676Sjpk bsllow(range->lower_bound);
86*1676Sjpk } else if (stobsl(lstr, range->lower_bound, NO_CORRECTION,
87*1676Sjpk &err) == 0) {
88*1676Sjpk blabel_free(range->lower_bound);
89*1676Sjpk blabel_free(range->upper_bound);
90*1676Sjpk free(range);
91*1676Sjpk errno = ENOTSUP;
92*1676Sjpk return (NULL);
93*1676Sjpk }
94*1676Sjpk lstr = kva_match(da->da_devopts, DAOPT_MAXLABEL);
95*1676Sjpk if (lstr == NULL) {
96*1676Sjpk bslhigh(range->upper_bound);
97*1676Sjpk } else if (stobsl(lstr, range->upper_bound, NO_CORRECTION,
98*1676Sjpk &err) == 0) {
99*1676Sjpk blabel_free(range->lower_bound);
100*1676Sjpk blabel_free(range->upper_bound);
101*1676Sjpk free(range);
102*1676Sjpk errno = ENOTSUP;
103*1676Sjpk return (NULL);
104*1676Sjpk }
105*1676Sjpk freedaent(da);
106*1676Sjpk }
107*1676Sjpk
108*1676Sjpk return (range);
109*1676Sjpk }
110