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 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 45 p9_register_trans(struct p9_trans_module *m) 46 { 47 48 TAILQ_INSERT_TAIL(&transports, m, link); 49 } 50 51 void 52 p9_unregister_trans(struct p9_trans_module *m) 53 { 54 55 TAILQ_REMOVE(&transports, m, link); 56 } 57 58 struct p9_trans_module * 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