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