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 (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /*
28 * Fake cmdk module. Prevents the real cmdk driver from loading in
29 * a xen HVM domain so that xdf may operate instead.
30 */
31
32 #include <sys/sunddi.h>
33 #include <sys/errno.h>
34 #include <sys/modctl.h>
35
36 /*ARGSUSED*/
37 static int
stubattach(dev_info_t * dip,ddi_attach_cmd_t cmd)38 stubattach(dev_info_t *dip, ddi_attach_cmd_t cmd)
39 {
40 return (DDI_SUCCESS);
41 }
42
43 /*ARGSUSED*/
44 static int
stubdetach(dev_info_t * dip,ddi_detach_cmd_t cmd)45 stubdetach(dev_info_t *dip, ddi_detach_cmd_t cmd)
46 {
47 return (DDI_SUCCESS);
48 }
49
50 static struct dev_ops stub_ops = {
51 DEVO_REV,
52 0,
53 NULL,
54 nulldev,
55 nulldev,
56 stubattach,
57 stubdetach,
58 nodev,
59 NULL,
60 NULL,
61 NULL,
62 ddi_quiesce_not_needed
63 };
64
65 static struct modldrv modldrv = {
66 &mod_driverops,
67 "xVM cmdk stub",
68 &stub_ops
69 };
70
71 static struct modlinkage modlinkage = {
72 MODREV_1, (void *)&modldrv, NULL
73 };
74
75 int
_init(void)76 _init(void)
77 {
78 return (mod_install(&modlinkage));
79 }
80
81 int
_info(struct modinfo * modinfop)82 _info(struct modinfo *modinfop)
83 {
84 return (mod_info(&modlinkage, modinfop));
85 }
86
87 int
_fini(void)88 _fini(void)
89 {
90 return (EBUSY);
91 }
92