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      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 
     31 static int dtrace(di_minor_t minor, di_node_t node);
     32 static int dtrace_provider(di_minor_t minor, di_node_t node);
     33 
     34 static 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 
     53 DEVFSADM_CREATE_INIT_V0(dtrace_create_cbt);
     54 
     55 static int
     56 dtrace(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 
     67 static int
     68 dtrace_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