dtrace_link.c revision 8803:8c01b39012c9 
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 2009 Sun Microsystems, Inc.  All rights reserved.
23 * Use is subject to license terms.
24 */
25
26#include <devfsadm.h>
27#include <strings.h>
28#include <stdio.h>
29#include <sys/dtrace.h>
30
31static int dtrace(di_minor_t minor, di_node_t node);
32static int dtrace_provider(di_minor_t minor, di_node_t node);
33
34static devfsadm_create_t dtrace_create_cbt[] = {
35	{ "pseudo", "ddi_pseudo", "dtrace",
36	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, dtrace },
37	{ "pseudo", "ddi_pseudo", "fasttrap",
38	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, dtrace_provider },
39	{ "pseudo", "ddi_pseudo", "fbt",
40	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, dtrace_provider },
41	{ "pseudo", "ddi_pseudo", "lockstat",
42	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, dtrace_provider },
43	{ "pseudo", "ddi_pseudo", "profile",
44	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, dtrace_provider },
45	{ "pseudo", "ddi_pseudo", "sdt",
46	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, dtrace_provider },
47	{ "pseudo", "ddi_pseudo", "systrace",
48	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, dtrace_provider },
49	{ "pseudo", "ddi_pseudo", "dcpc",
50	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, dtrace_provider },
51};
52
53DEVFSADM_CREATE_INIT_V0(dtrace_create_cbt);
54
55static int
56dtrace(di_minor_t minor, di_node_t node)
57{
58	char *mname = di_minor_name(minor);
59	char path[MAXPATHLEN];
60
61	(void) snprintf(path, sizeof (path), "dtrace/%s", mname);
62	(void) devfsadm_mklink(path, node, minor, 0);
63
64	return (DEVFSADM_CONTINUE);
65}
66
67static int
68dtrace_provider(di_minor_t minor, di_node_t node)
69{
70	char *mname = di_minor_name(minor);
71	char path[MAXPATHLEN];
72
73	(void) snprintf(path, sizeof (path), "dtrace/provider/%s", mname);
74	(void) devfsadm_mklink(path, node, minor, 0);
75
76	return (DEVFSADM_CONTINUE);
77}
78