xref: /titanic_44/usr/src/cmd/devfsadm/dtrace_link.c (revision 4bff34e37def8a90f9194d81bc345c52ba20086a)
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, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #pragma ident	"%Z%%M%	%I%	%E% SMI"
28 
29 #include <devfsadm.h>
30 #include <strings.h>
31 #include <stdio.h>
32 #include <sys/dtrace.h>
33 
34 static int dtrace(di_minor_t minor, di_node_t node);
35 static int dtrace_provider(di_minor_t minor, di_node_t node);
36 
37 static devfsadm_create_t dtrace_create_cbt[] = {
38 	{ "pseudo", "ddi_pseudo", "dtrace",
39 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, dtrace },
40 	{ "pseudo", "ddi_pseudo", "fasttrap",
41 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, dtrace_provider },
42 	{ "pseudo", "ddi_pseudo", "fbt",
43 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, dtrace_provider },
44 	{ "pseudo", "ddi_pseudo", "lockstat",
45 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, dtrace_provider },
46 	{ "pseudo", "ddi_pseudo", "profile",
47 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, dtrace_provider },
48 	{ "pseudo", "ddi_pseudo", "sdt",
49 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, dtrace_provider },
50 	{ "pseudo", "ddi_pseudo", "systrace",
51 	    TYPE_EXACT | DRV_EXACT, ILEVEL_0, dtrace_provider },
52 };
53 
54 DEVFSADM_CREATE_INIT_V0(dtrace_create_cbt);
55 
56 static int
57 dtrace(di_minor_t minor, di_node_t node)
58 {
59 	char *mname = di_minor_name(minor);
60 	char path[MAXPATHLEN];
61 
62 	(void) snprintf(path, sizeof (path), "dtrace/%s", mname);
63 	(void) devfsadm_mklink(path, node, minor, 0);
64 
65 	return (DEVFSADM_CONTINUE);
66 }
67 
68 static int
69 dtrace_provider(di_minor_t minor, di_node_t node)
70 {
71 	char *mname = di_minor_name(minor);
72 	char path[MAXPATHLEN];
73 
74 	(void) snprintf(path, sizeof (path), "dtrace/provider/%s", mname);
75 	(void) devfsadm_mklink(path, node, minor, 0);
76 
77 	return (DEVFSADM_CONTINUE);
78 }
79