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 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26 #pragma ident "%Z%%M% %I% %E% SMI"
27
28 #include <regex.h>
29 #include <devfsadm.h>
30 #include <stdio.h>
31 #include <strings.h>
32 #include <stdlib.h>
33 #include <limits.h>
34 #include <sys/privcmd_impl.h>
35 #include <sys/domcaps_impl.h>
36 #include <sys/balloon.h>
37
38 /*
39 * Handle miscellaneous children of xendev
40 */
41 static int devxen(di_minor_t, di_node_t);
42 static int xdt(di_minor_t minor, di_node_t node);
43
44 static devfsadm_create_t xen_cbt[] = {
45 { "xendev", DDI_PSEUDO, "xenbus",
46 TYPE_EXACT | DRV_EXACT, ILEVEL_0, devxen,
47 },
48 { "xendev", DDI_PSEUDO, PRIVCMD_DRIVER_NAME,
49 TYPE_EXACT | DRV_EXACT, ILEVEL_0, devxen,
50 },
51 { "xendev", DDI_PSEUDO, "evtchn",
52 TYPE_EXACT | DRV_EXACT, ILEVEL_0, devxen,
53 },
54 { "xendev", DDI_PSEUDO, DOMCAPS_DRIVER_NAME,
55 TYPE_EXACT | DRV_EXACT, ILEVEL_0, devxen,
56 },
57 { "xendev", DDI_PSEUDO, BALLOON_DRIVER_NAME,
58 TYPE_EXACT | DRV_EXACT, ILEVEL_0, devxen,
59 },
60 { "pseudo", DDI_PSEUDO, "xdt",
61 TYPE_EXACT | DRV_EXACT, ILEVEL_0, xdt
62 },
63 };
64
65 DEVFSADM_CREATE_INIT_V0(xen_cbt);
66
67 static devfsadm_remove_t xen_remove_cbt[] = {
68 { "xendev", "^" "xen/xenbus" "$", RM_ALWAYS | RM_PRE | RM_HOT,
69 ILEVEL_0, devfsadm_rm_all
70 },
71 { "xendev", "^" PRIVCMD_PATHNAME "$", RM_ALWAYS | RM_PRE | RM_HOT,
72 ILEVEL_0, devfsadm_rm_all
73 },
74 { "xendev", "^" "xen/evtchn" "$", RM_ALWAYS | RM_PRE | RM_HOT,
75 ILEVEL_0, devfsadm_rm_all
76 },
77 { "xendev", "^" DOMCAPS_PATHNAME "$", RM_ALWAYS | RM_PRE | RM_HOT,
78 ILEVEL_0, devfsadm_rm_all
79 },
80 { "xendev", "^" BALLOON_PATHNAME "$", RM_ALWAYS | RM_PRE | RM_HOT,
81 ILEVEL_0, devfsadm_rm_all
82 },
83 };
84
85 DEVFSADM_REMOVE_INIT_V0(xen_remove_cbt);
86
87 /*
88 * /dev/xen/<foo> -> /devices/xendev/<whatever>:<foo>
89 */
90 static int
devxen(di_minor_t minor,di_node_t node)91 devxen(di_minor_t minor, di_node_t node)
92 {
93 char buf[256];
94
95 (void) snprintf(buf, sizeof (buf), "xen/%s", di_minor_name(minor));
96 (void) devfsadm_mklink(buf, node, minor, 0);
97
98 return (DEVFSADM_CONTINUE);
99 }
100
101 static int
xdt(di_minor_t minor,di_node_t node)102 xdt(di_minor_t minor, di_node_t node)
103 {
104 char *mname = di_minor_name(minor);
105 char path[MAXPATHLEN];
106
107 (void) snprintf(path, sizeof (path), "dtrace/provider/%s", mname);
108 (void) devfsadm_mklink(path, node, minor, 0);
109
110 return (DEVFSADM_CONTINUE);
111 }
112