1 /*-
2 * Copyright (c) 2022-present Doug Rabson
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 #include <sys/param.h>
28 #include <sys/kernel.h>
29 #include <sys/kassert.h>
30 #include <sys/libkern.h>
31
32 #include <fs/p9fs/p9_transport.h>
33
34 TAILQ_HEAD(, p9_trans_module) transports;
35
36 static void
p9_transport_init(void * dummy __unused)37 p9_transport_init(void *dummy __unused)
38 {
39 TAILQ_INIT(&transports);
40 }
41
42 SYSINIT(p9_transport, SI_SUB_DRIVERS, SI_ORDER_FIRST, p9_transport_init, NULL);
43
44 void
p9_register_trans(struct p9_trans_module * m)45 p9_register_trans(struct p9_trans_module *m)
46 {
47
48 TAILQ_INSERT_TAIL(&transports, m, link);
49 }
50
51 void
p9_unregister_trans(struct p9_trans_module * m)52 p9_unregister_trans(struct p9_trans_module *m)
53 {
54
55 TAILQ_REMOVE(&transports, m, link);
56 }
57
58 struct p9_trans_module *
p9_get_trans_by_name(char * name)59 p9_get_trans_by_name(char *name)
60 {
61 struct p9_trans_module *m;
62
63 TAILQ_FOREACH(m, &transports, link) {
64 if (strcmp(m->name, name) == 0)
65 return (m);
66 }
67 return (NULL);
68 }
69
70