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)37 p9_transport_init(void)
38 {
39
40 TAILQ_INIT(&transports);
41 }
42
43 SYSINIT(p9_transport, SI_SUB_DRIVERS, SI_ORDER_FIRST, p9_transport_init, NULL);
44
45 void
p9_register_trans(struct p9_trans_module * m)46 p9_register_trans(struct p9_trans_module *m)
47 {
48
49 TAILQ_INSERT_TAIL(&transports, m, link);
50 }
51
52 void
p9_unregister_trans(struct p9_trans_module * m)53 p9_unregister_trans(struct p9_trans_module *m)
54 {
55
56 TAILQ_REMOVE(&transports, m, link);
57 }
58
59 struct p9_trans_module *
p9_get_trans_by_name(char * name)60 p9_get_trans_by_name(char *name)
61 {
62 struct p9_trans_module *m;
63
64 TAILQ_FOREACH(m, &transports, link) {
65 if (strcmp(m->name, name) == 0)
66 return (m);
67 }
68 return (NULL);
69 }
70
71