xref: /titanic_52/usr/src/uts/common/avs/ns/rdc/rdc_stub.c (revision fb6c52f1611001ba6d360f4bd2423829532c6030)
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 <sys/types.h>
27 #include <sys/cmn_err.h>
28 #include <sys/modctl.h>
29 #include <sys/errno.h>
30 
31 #include <rpc/auth.h>
32 #include <rpc/svc.h>
33 
34 #include <sys/nsctl/nsctl.h>
35 #include <sys/nsctl/nsvers.h>
36 #include "rdc_stub.h"
37 
38 static void null_dispatch(struct svc_req *req, SVCXPRT *xprt);
39 static void (*dispatch)(struct svc_req *, SVCXPRT *) = null_dispatch;
40 
41 /*
42  * Solaris module setup.
43  */
44 extern struct mod_ops mod_miscops;
45 
46 static struct modlmisc modlmisc = {
47 	&mod_miscops,   /* Type of module */
48 	"nws:Remote Mirror kRPC Stub:" ISS_VERSION_STR
49 };
50 
51 static struct modlinkage modlinkage = {
52 	MODREV_1,
53 	&modlmisc,
54 	NULL
55 };
56 
57 
58 int
59 _init(void)
60 {
61 	return (mod_install(&modlinkage));
62 }
63 
64 
65 int
66 _fini(void)
67 {
68 	/* unload is forbidden */
69 	return (EBUSY);
70 }
71 
72 
73 int
74 _info(struct modinfo *modinfop)
75 {
76 	return (mod_info(&modlinkage, modinfop));
77 }
78 
79 
80 /*
81  * rdcstub_dispatch is the place holder for rdcsrv_dispatch.
82  * rdcsrv registers this function as kRPC dispatch function.
83  * If rdcsrv is unloaded (uninstall package), then dispatch
84  * is set to null_dispatch
85  */
86 void
87 rdcstub_dispatch(struct svc_req *req, SVCXPRT *xprt)
88 {
89 	(*dispatch)(req, xprt);
90 }
91 
92 /* ARGSUSED */
93 static void
94 null_dispatch(struct svc_req *req, SVCXPRT *xprt)
95 {
96 	svcerr_noproc(xprt);
97 }
98 
99 void
100 rdcstub_set_dispatch(void (*disp)(struct svc_req *, SVCXPRT *))
101 {
102 	ASSERT(disp != NULL);
103 	dispatch = disp;
104 }
105 
106 void
107 rdcstub_unset_dispatch()
108 {
109 	dispatch = null_dispatch;
110 }
111