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Commit | Line | Data |
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8e87d142 | 1 | /* |
1da177e4 LT |
2 | RFCOMM implementation for Linux Bluetooth stack (BlueZ). |
3 | Copyright (C) 2002 Maxim Krasnyansky <maxk@qualcomm.com> | |
4 | Copyright (C) 2002 Marcel Holtmann <marcel@holtmann.org> | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License version 2 as | |
8 | published by the Free Software Foundation; | |
9 | ||
10 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
11 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
12 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
13 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
8e87d142 YH |
14 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
15 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
16 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
1da177e4 LT |
17 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
18 | ||
8e87d142 YH |
19 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
20 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
1da177e4 LT |
21 | SOFTWARE IS DISCLAIMED. |
22 | */ | |
23 | ||
24 | /* | |
25 | * RFCOMM sockets. | |
1da177e4 LT |
26 | */ |
27 | ||
1da177e4 LT |
28 | #include <linux/module.h> |
29 | ||
30 | #include <linux/types.h> | |
31 | #include <linux/errno.h> | |
32 | #include <linux/kernel.h> | |
1da177e4 LT |
33 | #include <linux/sched.h> |
34 | #include <linux/slab.h> | |
35 | #include <linux/poll.h> | |
36 | #include <linux/fcntl.h> | |
37 | #include <linux/init.h> | |
38 | #include <linux/interrupt.h> | |
39 | #include <linux/socket.h> | |
40 | #include <linux/skbuff.h> | |
41 | #include <linux/list.h> | |
be9d1227 | 42 | #include <linux/device.h> |
1da177e4 LT |
43 | #include <net/sock.h> |
44 | ||
45 | #include <asm/system.h> | |
46 | #include <asm/uaccess.h> | |
47 | ||
48 | #include <net/bluetooth/bluetooth.h> | |
49 | #include <net/bluetooth/hci_core.h> | |
50 | #include <net/bluetooth/l2cap.h> | |
51 | #include <net/bluetooth/rfcomm.h> | |
52 | ||
90ddc4f0 | 53 | static const struct proto_ops rfcomm_sock_ops; |
1da177e4 LT |
54 | |
55 | static struct bt_sock_list rfcomm_sk_list = { | |
d5fb2962 | 56 | .lock = __RW_LOCK_UNLOCKED(rfcomm_sk_list.lock) |
1da177e4 LT |
57 | }; |
58 | ||
59 | static void rfcomm_sock_close(struct sock *sk); | |
60 | static void rfcomm_sock_kill(struct sock *sk); | |
61 | ||
62 | /* ---- DLC callbacks ---- | |
63 | * | |
64 | * called under rfcomm_dlc_lock() | |
65 | */ | |
66 | static void rfcomm_sk_data_ready(struct rfcomm_dlc *d, struct sk_buff *skb) | |
67 | { | |
68 | struct sock *sk = d->owner; | |
69 | if (!sk) | |
70 | return; | |
71 | ||
72 | atomic_add(skb->len, &sk->sk_rmem_alloc); | |
73 | skb_queue_tail(&sk->sk_receive_queue, skb); | |
74 | sk->sk_data_ready(sk, skb->len); | |
75 | ||
76 | if (atomic_read(&sk->sk_rmem_alloc) >= sk->sk_rcvbuf) | |
77 | rfcomm_dlc_throttle(d); | |
78 | } | |
79 | ||
80 | static void rfcomm_sk_state_change(struct rfcomm_dlc *d, int err) | |
81 | { | |
82 | struct sock *sk = d->owner, *parent; | |
83 | if (!sk) | |
84 | return; | |
85 | ||
86 | BT_DBG("dlc %p state %ld err %d", d, d->state, err); | |
87 | ||
88 | bh_lock_sock(sk); | |
89 | ||
90 | if (err) | |
91 | sk->sk_err = err; | |
92 | ||
93 | sk->sk_state = d->state; | |
94 | ||
95 | parent = bt_sk(sk)->parent; | |
96 | if (parent) { | |
97 | if (d->state == BT_CLOSED) { | |
98 | sock_set_flag(sk, SOCK_ZAPPED); | |
99 | bt_accept_unlink(sk); | |
100 | } | |
101 | parent->sk_data_ready(parent, 0); | |
102 | } else { | |
103 | if (d->state == BT_CONNECTED) | |
104 | rfcomm_session_getaddr(d->session, &bt_sk(sk)->src, NULL); | |
105 | sk->sk_state_change(sk); | |
106 | } | |
107 | ||
108 | bh_unlock_sock(sk); | |
109 | ||
110 | if (parent && sock_flag(sk, SOCK_ZAPPED)) { | |
111 | /* We have to drop DLC lock here, otherwise | |
112 | * rfcomm_sock_destruct() will dead lock. */ | |
113 | rfcomm_dlc_unlock(d); | |
114 | rfcomm_sock_kill(sk); | |
115 | rfcomm_dlc_lock(d); | |
116 | } | |
117 | } | |
118 | ||
119 | /* ---- Socket functions ---- */ | |
120 | static struct sock *__rfcomm_get_sock_by_addr(u8 channel, bdaddr_t *src) | |
121 | { | |
122 | struct sock *sk = NULL; | |
123 | struct hlist_node *node; | |
124 | ||
125 | sk_for_each(sk, node, &rfcomm_sk_list.head) { | |
8e87d142 | 126 | if (rfcomm_pi(sk)->channel == channel && |
1da177e4 LT |
127 | !bacmp(&bt_sk(sk)->src, src)) |
128 | break; | |
129 | } | |
130 | ||
131 | return node ? sk : NULL; | |
132 | } | |
133 | ||
134 | /* Find socket with channel and source bdaddr. | |
135 | * Returns closest match. | |
136 | */ | |
137 | static struct sock *__rfcomm_get_sock_by_channel(int state, u8 channel, bdaddr_t *src) | |
138 | { | |
139 | struct sock *sk = NULL, *sk1 = NULL; | |
140 | struct hlist_node *node; | |
141 | ||
142 | sk_for_each(sk, node, &rfcomm_sk_list.head) { | |
143 | if (state && sk->sk_state != state) | |
144 | continue; | |
145 | ||
146 | if (rfcomm_pi(sk)->channel == channel) { | |
147 | /* Exact match. */ | |
148 | if (!bacmp(&bt_sk(sk)->src, src)) | |
149 | break; | |
150 | ||
151 | /* Closest match */ | |
152 | if (!bacmp(&bt_sk(sk)->src, BDADDR_ANY)) | |
153 | sk1 = sk; | |
154 | } | |
155 | } | |
156 | return node ? sk : sk1; | |
157 | } | |
158 | ||
159 | /* Find socket with given address (channel, src). | |
160 | * Returns locked socket */ | |
161 | static inline struct sock *rfcomm_get_sock_by_channel(int state, u8 channel, bdaddr_t *src) | |
162 | { | |
163 | struct sock *s; | |
164 | read_lock(&rfcomm_sk_list.lock); | |
165 | s = __rfcomm_get_sock_by_channel(state, channel, src); | |
166 | if (s) bh_lock_sock(s); | |
167 | read_unlock(&rfcomm_sk_list.lock); | |
168 | return s; | |
169 | } | |
170 | ||
171 | static void rfcomm_sock_destruct(struct sock *sk) | |
172 | { | |
173 | struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc; | |
174 | ||
175 | BT_DBG("sk %p dlc %p", sk, d); | |
176 | ||
177 | skb_queue_purge(&sk->sk_receive_queue); | |
178 | skb_queue_purge(&sk->sk_write_queue); | |
179 | ||
180 | rfcomm_dlc_lock(d); | |
181 | rfcomm_pi(sk)->dlc = NULL; | |
182 | ||
183 | /* Detach DLC if it's owned by this socket */ | |
184 | if (d->owner == sk) | |
185 | d->owner = NULL; | |
186 | rfcomm_dlc_unlock(d); | |
187 | ||
188 | rfcomm_dlc_put(d); | |
189 | } | |
190 | ||
191 | static void rfcomm_sock_cleanup_listen(struct sock *parent) | |
192 | { | |
193 | struct sock *sk; | |
194 | ||
195 | BT_DBG("parent %p", parent); | |
196 | ||
197 | /* Close not yet accepted dlcs */ | |
198 | while ((sk = bt_accept_dequeue(parent, NULL))) { | |
199 | rfcomm_sock_close(sk); | |
200 | rfcomm_sock_kill(sk); | |
201 | } | |
202 | ||
203 | parent->sk_state = BT_CLOSED; | |
204 | sock_set_flag(parent, SOCK_ZAPPED); | |
205 | } | |
206 | ||
207 | /* Kill socket (only if zapped and orphan) | |
208 | * Must be called on unlocked socket. | |
209 | */ | |
210 | static void rfcomm_sock_kill(struct sock *sk) | |
211 | { | |
212 | if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket) | |
213 | return; | |
214 | ||
215 | BT_DBG("sk %p state %d refcnt %d", sk, sk->sk_state, atomic_read(&sk->sk_refcnt)); | |
216 | ||
217 | /* Kill poor orphan */ | |
218 | bt_sock_unlink(&rfcomm_sk_list, sk); | |
219 | sock_set_flag(sk, SOCK_DEAD); | |
220 | sock_put(sk); | |
221 | } | |
222 | ||
223 | static void __rfcomm_sock_close(struct sock *sk) | |
224 | { | |
225 | struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc; | |
226 | ||
227 | BT_DBG("sk %p state %d socket %p", sk, sk->sk_state, sk->sk_socket); | |
228 | ||
229 | switch (sk->sk_state) { | |
230 | case BT_LISTEN: | |
231 | rfcomm_sock_cleanup_listen(sk); | |
232 | break; | |
233 | ||
234 | case BT_CONNECT: | |
235 | case BT_CONNECT2: | |
236 | case BT_CONFIG: | |
237 | case BT_CONNECTED: | |
238 | rfcomm_dlc_close(d, 0); | |
239 | ||
240 | default: | |
241 | sock_set_flag(sk, SOCK_ZAPPED); | |
242 | break; | |
243 | } | |
244 | } | |
245 | ||
246 | /* Close socket. | |
247 | * Must be called on unlocked socket. | |
248 | */ | |
249 | static void rfcomm_sock_close(struct sock *sk) | |
250 | { | |
251 | lock_sock(sk); | |
252 | __rfcomm_sock_close(sk); | |
253 | release_sock(sk); | |
254 | } | |
255 | ||
256 | static void rfcomm_sock_init(struct sock *sk, struct sock *parent) | |
257 | { | |
258 | struct rfcomm_pinfo *pi = rfcomm_pi(sk); | |
259 | ||
260 | BT_DBG("sk %p", sk); | |
261 | ||
262 | if (parent) { | |
263 | sk->sk_type = parent->sk_type; | |
bb23c0ab | 264 | pi->dlc->defer_setup = bt_sk(parent)->defer_setup; |
9f2c8a03 MH |
265 | |
266 | pi->sec_level = rfcomm_pi(parent)->sec_level; | |
267 | pi->role_switch = rfcomm_pi(parent)->role_switch; | |
1da177e4 | 268 | } else { |
bb23c0ab | 269 | pi->dlc->defer_setup = 0; |
9f2c8a03 MH |
270 | |
271 | pi->sec_level = BT_SECURITY_LOW; | |
272 | pi->role_switch = 0; | |
1da177e4 LT |
273 | } |
274 | ||
9f2c8a03 MH |
275 | pi->dlc->sec_level = pi->sec_level; |
276 | pi->dlc->role_switch = pi->role_switch; | |
1da177e4 LT |
277 | } |
278 | ||
279 | static struct proto rfcomm_proto = { | |
280 | .name = "RFCOMM", | |
281 | .owner = THIS_MODULE, | |
282 | .obj_size = sizeof(struct rfcomm_pinfo) | |
283 | }; | |
284 | ||
1b8d7ae4 | 285 | static struct sock *rfcomm_sock_alloc(struct net *net, struct socket *sock, int proto, gfp_t prio) |
1da177e4 LT |
286 | { |
287 | struct rfcomm_dlc *d; | |
288 | struct sock *sk; | |
289 | ||
6257ff21 | 290 | sk = sk_alloc(net, PF_BLUETOOTH, prio, &rfcomm_proto); |
1da177e4 LT |
291 | if (!sk) |
292 | return NULL; | |
293 | ||
294 | sock_init_data(sock, sk); | |
295 | INIT_LIST_HEAD(&bt_sk(sk)->accept_q); | |
296 | ||
297 | d = rfcomm_dlc_alloc(prio); | |
298 | if (!d) { | |
299 | sk_free(sk); | |
300 | return NULL; | |
301 | } | |
302 | ||
303 | d->data_ready = rfcomm_sk_data_ready; | |
304 | d->state_change = rfcomm_sk_state_change; | |
305 | ||
306 | rfcomm_pi(sk)->dlc = d; | |
307 | d->owner = sk; | |
308 | ||
309 | sk->sk_destruct = rfcomm_sock_destruct; | |
310 | sk->sk_sndtimeo = RFCOMM_CONN_TIMEOUT; | |
311 | ||
77db1980 MH |
312 | sk->sk_sndbuf = RFCOMM_MAX_CREDITS * RFCOMM_DEFAULT_MTU * 10; |
313 | sk->sk_rcvbuf = RFCOMM_MAX_CREDITS * RFCOMM_DEFAULT_MTU * 10; | |
1da177e4 LT |
314 | |
315 | sock_reset_flag(sk, SOCK_ZAPPED); | |
316 | ||
317 | sk->sk_protocol = proto; | |
77db1980 | 318 | sk->sk_state = BT_OPEN; |
1da177e4 LT |
319 | |
320 | bt_sock_link(&rfcomm_sk_list, sk); | |
321 | ||
322 | BT_DBG("sk %p", sk); | |
323 | return sk; | |
324 | } | |
325 | ||
1b8d7ae4 | 326 | static int rfcomm_sock_create(struct net *net, struct socket *sock, int protocol) |
1da177e4 LT |
327 | { |
328 | struct sock *sk; | |
329 | ||
330 | BT_DBG("sock %p", sock); | |
331 | ||
332 | sock->state = SS_UNCONNECTED; | |
333 | ||
334 | if (sock->type != SOCK_STREAM && sock->type != SOCK_RAW) | |
335 | return -ESOCKTNOSUPPORT; | |
336 | ||
337 | sock->ops = &rfcomm_sock_ops; | |
338 | ||
1b8d7ae4 | 339 | sk = rfcomm_sock_alloc(net, sock, protocol, GFP_ATOMIC); |
74da626a | 340 | if (!sk) |
1da177e4 LT |
341 | return -ENOMEM; |
342 | ||
343 | rfcomm_sock_init(sk, NULL); | |
344 | return 0; | |
345 | } | |
346 | ||
347 | static int rfcomm_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len) | |
348 | { | |
349 | struct sockaddr_rc *sa = (struct sockaddr_rc *) addr; | |
350 | struct sock *sk = sock->sk; | |
351 | int err = 0; | |
352 | ||
353 | BT_DBG("sk %p %s", sk, batostr(&sa->rc_bdaddr)); | |
354 | ||
355 | if (!addr || addr->sa_family != AF_BLUETOOTH) | |
356 | return -EINVAL; | |
357 | ||
358 | lock_sock(sk); | |
359 | ||
360 | if (sk->sk_state != BT_OPEN) { | |
361 | err = -EBADFD; | |
362 | goto done; | |
363 | } | |
364 | ||
354d28d5 MH |
365 | if (sk->sk_type != SOCK_STREAM) { |
366 | err = -EINVAL; | |
367 | goto done; | |
368 | } | |
369 | ||
1da177e4 LT |
370 | write_lock_bh(&rfcomm_sk_list.lock); |
371 | ||
372 | if (sa->rc_channel && __rfcomm_get_sock_by_addr(sa->rc_channel, &sa->rc_bdaddr)) { | |
373 | err = -EADDRINUSE; | |
374 | } else { | |
375 | /* Save source address */ | |
376 | bacpy(&bt_sk(sk)->src, &sa->rc_bdaddr); | |
377 | rfcomm_pi(sk)->channel = sa->rc_channel; | |
378 | sk->sk_state = BT_BOUND; | |
379 | } | |
380 | ||
381 | write_unlock_bh(&rfcomm_sk_list.lock); | |
382 | ||
383 | done: | |
384 | release_sock(sk); | |
385 | return err; | |
386 | } | |
387 | ||
388 | static int rfcomm_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags) | |
389 | { | |
390 | struct sockaddr_rc *sa = (struct sockaddr_rc *) addr; | |
391 | struct sock *sk = sock->sk; | |
392 | struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc; | |
393 | int err = 0; | |
394 | ||
395 | BT_DBG("sk %p", sk); | |
396 | ||
397 | if (addr->sa_family != AF_BLUETOOTH || alen < sizeof(struct sockaddr_rc)) | |
398 | return -EINVAL; | |
399 | ||
354d28d5 | 400 | lock_sock(sk); |
1da177e4 | 401 | |
354d28d5 MH |
402 | if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND) { |
403 | err = -EBADFD; | |
404 | goto done; | |
405 | } | |
1da177e4 | 406 | |
354d28d5 MH |
407 | if (sk->sk_type != SOCK_STREAM) { |
408 | err = -EINVAL; | |
409 | goto done; | |
410 | } | |
1da177e4 LT |
411 | |
412 | sk->sk_state = BT_CONNECT; | |
413 | bacpy(&bt_sk(sk)->dst, &sa->rc_bdaddr); | |
414 | rfcomm_pi(sk)->channel = sa->rc_channel; | |
415 | ||
9f2c8a03 MH |
416 | d->sec_level = rfcomm_pi(sk)->sec_level; |
417 | d->role_switch = rfcomm_pi(sk)->role_switch; | |
77db1980 | 418 | |
1da177e4 LT |
419 | err = rfcomm_dlc_open(d, &bt_sk(sk)->src, &sa->rc_bdaddr, sa->rc_channel); |
420 | if (!err) | |
421 | err = bt_sock_wait_state(sk, BT_CONNECTED, | |
422 | sock_sndtimeo(sk, flags & O_NONBLOCK)); | |
423 | ||
354d28d5 | 424 | done: |
1da177e4 LT |
425 | release_sock(sk); |
426 | return err; | |
427 | } | |
428 | ||
429 | static int rfcomm_sock_listen(struct socket *sock, int backlog) | |
430 | { | |
431 | struct sock *sk = sock->sk; | |
432 | int err = 0; | |
433 | ||
434 | BT_DBG("sk %p backlog %d", sk, backlog); | |
435 | ||
436 | lock_sock(sk); | |
437 | ||
438 | if (sk->sk_state != BT_BOUND) { | |
439 | err = -EBADFD; | |
440 | goto done; | |
441 | } | |
442 | ||
354d28d5 MH |
443 | if (sk->sk_type != SOCK_STREAM) { |
444 | err = -EINVAL; | |
445 | goto done; | |
446 | } | |
447 | ||
1da177e4 LT |
448 | if (!rfcomm_pi(sk)->channel) { |
449 | bdaddr_t *src = &bt_sk(sk)->src; | |
450 | u8 channel; | |
451 | ||
452 | err = -EINVAL; | |
453 | ||
454 | write_lock_bh(&rfcomm_sk_list.lock); | |
455 | ||
456 | for (channel = 1; channel < 31; channel++) | |
457 | if (!__rfcomm_get_sock_by_addr(channel, src)) { | |
458 | rfcomm_pi(sk)->channel = channel; | |
459 | err = 0; | |
460 | break; | |
461 | } | |
462 | ||
463 | write_unlock_bh(&rfcomm_sk_list.lock); | |
464 | ||
465 | if (err < 0) | |
466 | goto done; | |
467 | } | |
468 | ||
469 | sk->sk_max_ack_backlog = backlog; | |
470 | sk->sk_ack_backlog = 0; | |
471 | sk->sk_state = BT_LISTEN; | |
472 | ||
473 | done: | |
474 | release_sock(sk); | |
475 | return err; | |
476 | } | |
477 | ||
478 | static int rfcomm_sock_accept(struct socket *sock, struct socket *newsock, int flags) | |
479 | { | |
480 | DECLARE_WAITQUEUE(wait, current); | |
481 | struct sock *sk = sock->sk, *nsk; | |
482 | long timeo; | |
483 | int err = 0; | |
484 | ||
485 | lock_sock(sk); | |
486 | ||
487 | if (sk->sk_state != BT_LISTEN) { | |
488 | err = -EBADFD; | |
489 | goto done; | |
490 | } | |
491 | ||
354d28d5 MH |
492 | if (sk->sk_type != SOCK_STREAM) { |
493 | err = -EINVAL; | |
494 | goto done; | |
495 | } | |
496 | ||
1da177e4 LT |
497 | timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK); |
498 | ||
499 | BT_DBG("sk %p timeo %ld", sk, timeo); | |
500 | ||
501 | /* Wait for an incoming connection. (wake-one). */ | |
502 | add_wait_queue_exclusive(sk->sk_sleep, &wait); | |
503 | while (!(nsk = bt_accept_dequeue(sk, newsock))) { | |
504 | set_current_state(TASK_INTERRUPTIBLE); | |
505 | if (!timeo) { | |
506 | err = -EAGAIN; | |
507 | break; | |
508 | } | |
509 | ||
510 | release_sock(sk); | |
511 | timeo = schedule_timeout(timeo); | |
512 | lock_sock(sk); | |
513 | ||
514 | if (sk->sk_state != BT_LISTEN) { | |
515 | err = -EBADFD; | |
516 | break; | |
517 | } | |
518 | ||
519 | if (signal_pending(current)) { | |
520 | err = sock_intr_errno(timeo); | |
521 | break; | |
522 | } | |
523 | } | |
524 | set_current_state(TASK_RUNNING); | |
525 | remove_wait_queue(sk->sk_sleep, &wait); | |
526 | ||
527 | if (err) | |
528 | goto done; | |
529 | ||
530 | newsock->state = SS_CONNECTED; | |
531 | ||
532 | BT_DBG("new socket %p", nsk); | |
533 | ||
534 | done: | |
535 | release_sock(sk); | |
536 | return err; | |
537 | } | |
538 | ||
539 | static int rfcomm_sock_getname(struct socket *sock, struct sockaddr *addr, int *len, int peer) | |
540 | { | |
541 | struct sockaddr_rc *sa = (struct sockaddr_rc *) addr; | |
542 | struct sock *sk = sock->sk; | |
543 | ||
544 | BT_DBG("sock %p, sk %p", sock, sk); | |
545 | ||
546 | sa->rc_family = AF_BLUETOOTH; | |
547 | sa->rc_channel = rfcomm_pi(sk)->channel; | |
548 | if (peer) | |
549 | bacpy(&sa->rc_bdaddr, &bt_sk(sk)->dst); | |
550 | else | |
551 | bacpy(&sa->rc_bdaddr, &bt_sk(sk)->src); | |
552 | ||
553 | *len = sizeof(struct sockaddr_rc); | |
554 | return 0; | |
555 | } | |
556 | ||
557 | static int rfcomm_sock_sendmsg(struct kiocb *iocb, struct socket *sock, | |
558 | struct msghdr *msg, size_t len) | |
559 | { | |
560 | struct sock *sk = sock->sk; | |
561 | struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc; | |
562 | struct sk_buff *skb; | |
1da177e4 LT |
563 | int sent = 0; |
564 | ||
bb23c0ab MH |
565 | if (test_bit(RFCOMM_DEFER_SETUP, &d->flags)) |
566 | return -ENOTCONN; | |
567 | ||
1da177e4 LT |
568 | if (msg->msg_flags & MSG_OOB) |
569 | return -EOPNOTSUPP; | |
570 | ||
571 | if (sk->sk_shutdown & SEND_SHUTDOWN) | |
572 | return -EPIPE; | |
573 | ||
574 | BT_DBG("sock %p, sk %p", sock, sk); | |
575 | ||
576 | lock_sock(sk); | |
577 | ||
578 | while (len) { | |
579 | size_t size = min_t(size_t, len, d->mtu); | |
4d6a2188 | 580 | int err; |
8e87d142 | 581 | |
1da177e4 LT |
582 | skb = sock_alloc_send_skb(sk, size + RFCOMM_SKB_RESERVE, |
583 | msg->msg_flags & MSG_DONTWAIT, &err); | |
91aa35a5 VS |
584 | if (!skb) { |
585 | if (sent == 0) | |
586 | sent = err; | |
1da177e4 | 587 | break; |
91aa35a5 | 588 | } |
1da177e4 LT |
589 | skb_reserve(skb, RFCOMM_SKB_HEAD_RESERVE); |
590 | ||
591 | err = memcpy_fromiovec(skb_put(skb, size), msg->msg_iov, size); | |
592 | if (err) { | |
593 | kfree_skb(skb); | |
4d6a2188 MH |
594 | if (sent == 0) |
595 | sent = err; | |
1da177e4 LT |
596 | break; |
597 | } | |
598 | ||
599 | err = rfcomm_dlc_send(d, skb); | |
600 | if (err < 0) { | |
601 | kfree_skb(skb); | |
4d6a2188 MH |
602 | if (sent == 0) |
603 | sent = err; | |
1da177e4 LT |
604 | break; |
605 | } | |
606 | ||
607 | sent += size; | |
608 | len -= size; | |
609 | } | |
610 | ||
611 | release_sock(sk); | |
612 | ||
4d6a2188 | 613 | return sent; |
1da177e4 LT |
614 | } |
615 | ||
616 | static long rfcomm_sock_data_wait(struct sock *sk, long timeo) | |
617 | { | |
618 | DECLARE_WAITQUEUE(wait, current); | |
619 | ||
620 | add_wait_queue(sk->sk_sleep, &wait); | |
621 | for (;;) { | |
622 | set_current_state(TASK_INTERRUPTIBLE); | |
623 | ||
b03efcfb DM |
624 | if (!skb_queue_empty(&sk->sk_receive_queue) || |
625 | sk->sk_err || | |
626 | (sk->sk_shutdown & RCV_SHUTDOWN) || | |
627 | signal_pending(current) || | |
628 | !timeo) | |
1da177e4 LT |
629 | break; |
630 | ||
631 | set_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags); | |
632 | release_sock(sk); | |
633 | timeo = schedule_timeout(timeo); | |
634 | lock_sock(sk); | |
635 | clear_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags); | |
636 | } | |
637 | ||
638 | __set_current_state(TASK_RUNNING); | |
639 | remove_wait_queue(sk->sk_sleep, &wait); | |
640 | return timeo; | |
641 | } | |
642 | ||
643 | static int rfcomm_sock_recvmsg(struct kiocb *iocb, struct socket *sock, | |
644 | struct msghdr *msg, size_t size, int flags) | |
645 | { | |
646 | struct sock *sk = sock->sk; | |
bb23c0ab | 647 | struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc; |
1da177e4 LT |
648 | int err = 0; |
649 | size_t target, copied = 0; | |
650 | long timeo; | |
651 | ||
bb23c0ab MH |
652 | if (test_and_clear_bit(RFCOMM_DEFER_SETUP, &d->flags)) { |
653 | rfcomm_dlc_accept(d); | |
654 | return 0; | |
655 | } | |
656 | ||
1da177e4 LT |
657 | if (flags & MSG_OOB) |
658 | return -EOPNOTSUPP; | |
659 | ||
660 | msg->msg_namelen = 0; | |
661 | ||
a418b893 | 662 | BT_DBG("sk %p size %zu", sk, size); |
1da177e4 LT |
663 | |
664 | lock_sock(sk); | |
665 | ||
666 | target = sock_rcvlowat(sk, flags & MSG_WAITALL, size); | |
667 | timeo = sock_rcvtimeo(sk, flags & MSG_DONTWAIT); | |
668 | ||
669 | do { | |
670 | struct sk_buff *skb; | |
671 | int chunk; | |
672 | ||
673 | skb = skb_dequeue(&sk->sk_receive_queue); | |
674 | if (!skb) { | |
675 | if (copied >= target) | |
676 | break; | |
677 | ||
678 | if ((err = sock_error(sk)) != 0) | |
679 | break; | |
680 | if (sk->sk_shutdown & RCV_SHUTDOWN) | |
681 | break; | |
682 | ||
683 | err = -EAGAIN; | |
684 | if (!timeo) | |
685 | break; | |
686 | ||
687 | timeo = rfcomm_sock_data_wait(sk, timeo); | |
688 | ||
689 | if (signal_pending(current)) { | |
690 | err = sock_intr_errno(timeo); | |
691 | goto out; | |
692 | } | |
693 | continue; | |
694 | } | |
695 | ||
696 | chunk = min_t(unsigned int, skb->len, size); | |
697 | if (memcpy_toiovec(msg->msg_iov, skb->data, chunk)) { | |
698 | skb_queue_head(&sk->sk_receive_queue, skb); | |
699 | if (!copied) | |
700 | copied = -EFAULT; | |
701 | break; | |
702 | } | |
703 | copied += chunk; | |
704 | size -= chunk; | |
705 | ||
3241ad82 MH |
706 | sock_recv_timestamp(msg, sk, skb); |
707 | ||
1da177e4 LT |
708 | if (!(flags & MSG_PEEK)) { |
709 | atomic_sub(chunk, &sk->sk_rmem_alloc); | |
710 | ||
711 | skb_pull(skb, chunk); | |
712 | if (skb->len) { | |
713 | skb_queue_head(&sk->sk_receive_queue, skb); | |
714 | break; | |
715 | } | |
716 | kfree_skb(skb); | |
717 | ||
718 | } else { | |
719 | /* put message back and return */ | |
720 | skb_queue_head(&sk->sk_receive_queue, skb); | |
721 | break; | |
722 | } | |
723 | } while (size); | |
724 | ||
725 | out: | |
726 | if (atomic_read(&sk->sk_rmem_alloc) <= (sk->sk_rcvbuf >> 2)) | |
727 | rfcomm_dlc_unthrottle(rfcomm_pi(sk)->dlc); | |
728 | ||
729 | release_sock(sk); | |
730 | return copied ? : err; | |
731 | } | |
732 | ||
b7058842 | 733 | static int rfcomm_sock_setsockopt_old(struct socket *sock, int optname, char __user *optval, unsigned int optlen) |
1da177e4 LT |
734 | { |
735 | struct sock *sk = sock->sk; | |
736 | int err = 0; | |
737 | u32 opt; | |
738 | ||
739 | BT_DBG("sk %p", sk); | |
740 | ||
741 | lock_sock(sk); | |
742 | ||
743 | switch (optname) { | |
744 | case RFCOMM_LM: | |
745 | if (get_user(opt, (u32 __user *) optval)) { | |
746 | err = -EFAULT; | |
747 | break; | |
748 | } | |
749 | ||
9f2c8a03 MH |
750 | if (opt & RFCOMM_LM_AUTH) |
751 | rfcomm_pi(sk)->sec_level = BT_SECURITY_LOW; | |
752 | if (opt & RFCOMM_LM_ENCRYPT) | |
753 | rfcomm_pi(sk)->sec_level = BT_SECURITY_MEDIUM; | |
754 | if (opt & RFCOMM_LM_SECURE) | |
755 | rfcomm_pi(sk)->sec_level = BT_SECURITY_HIGH; | |
756 | ||
757 | rfcomm_pi(sk)->role_switch = (opt & RFCOMM_LM_MASTER); | |
1da177e4 LT |
758 | break; |
759 | ||
760 | default: | |
761 | err = -ENOPROTOOPT; | |
762 | break; | |
763 | } | |
764 | ||
765 | release_sock(sk); | |
766 | return err; | |
767 | } | |
768 | ||
b7058842 | 769 | static int rfcomm_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen) |
d58daf42 MH |
770 | { |
771 | struct sock *sk = sock->sk; | |
9f2c8a03 MH |
772 | struct bt_security sec; |
773 | int len, err = 0; | |
bb23c0ab | 774 | u32 opt; |
d58daf42 MH |
775 | |
776 | BT_DBG("sk %p", sk); | |
777 | ||
778 | if (level == SOL_RFCOMM) | |
779 | return rfcomm_sock_setsockopt_old(sock, optname, optval, optlen); | |
780 | ||
0588d94f MH |
781 | if (level != SOL_BLUETOOTH) |
782 | return -ENOPROTOOPT; | |
783 | ||
d58daf42 MH |
784 | lock_sock(sk); |
785 | ||
786 | switch (optname) { | |
9f2c8a03 | 787 | case BT_SECURITY: |
0588d94f MH |
788 | if (sk->sk_type != SOCK_STREAM) { |
789 | err = -EINVAL; | |
790 | break; | |
791 | } | |
792 | ||
9f2c8a03 MH |
793 | sec.level = BT_SECURITY_LOW; |
794 | ||
795 | len = min_t(unsigned int, sizeof(sec), optlen); | |
796 | if (copy_from_user((char *) &sec, optval, len)) { | |
797 | err = -EFAULT; | |
798 | break; | |
799 | } | |
800 | ||
801 | if (sec.level > BT_SECURITY_HIGH) { | |
802 | err = -EINVAL; | |
803 | break; | |
804 | } | |
805 | ||
806 | rfcomm_pi(sk)->sec_level = sec.level; | |
807 | break; | |
808 | ||
bb23c0ab MH |
809 | case BT_DEFER_SETUP: |
810 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
811 | err = -EINVAL; | |
812 | break; | |
813 | } | |
814 | ||
815 | if (get_user(opt, (u32 __user *) optval)) { | |
816 | err = -EFAULT; | |
817 | break; | |
818 | } | |
819 | ||
820 | bt_sk(sk)->defer_setup = opt; | |
821 | break; | |
822 | ||
d58daf42 MH |
823 | default: |
824 | err = -ENOPROTOOPT; | |
825 | break; | |
826 | } | |
827 | ||
828 | release_sock(sk); | |
829 | return err; | |
830 | } | |
831 | ||
832 | static int rfcomm_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen) | |
1da177e4 LT |
833 | { |
834 | struct sock *sk = sock->sk; | |
835 | struct sock *l2cap_sk; | |
836 | struct rfcomm_conninfo cinfo; | |
837 | int len, err = 0; | |
9f2c8a03 | 838 | u32 opt; |
1da177e4 LT |
839 | |
840 | BT_DBG("sk %p", sk); | |
841 | ||
842 | if (get_user(len, optlen)) | |
843 | return -EFAULT; | |
844 | ||
845 | lock_sock(sk); | |
846 | ||
847 | switch (optname) { | |
848 | case RFCOMM_LM: | |
9f2c8a03 MH |
849 | switch (rfcomm_pi(sk)->sec_level) { |
850 | case BT_SECURITY_LOW: | |
851 | opt = RFCOMM_LM_AUTH; | |
852 | break; | |
853 | case BT_SECURITY_MEDIUM: | |
854 | opt = RFCOMM_LM_AUTH | RFCOMM_LM_ENCRYPT; | |
855 | break; | |
856 | case BT_SECURITY_HIGH: | |
857 | opt = RFCOMM_LM_AUTH | RFCOMM_LM_ENCRYPT | | |
858 | RFCOMM_LM_SECURE; | |
859 | break; | |
860 | default: | |
861 | opt = 0; | |
862 | break; | |
863 | } | |
864 | ||
865 | if (rfcomm_pi(sk)->role_switch) | |
866 | opt |= RFCOMM_LM_MASTER; | |
867 | ||
868 | if (put_user(opt, (u32 __user *) optval)) | |
1da177e4 LT |
869 | err = -EFAULT; |
870 | break; | |
871 | ||
872 | case RFCOMM_CONNINFO: | |
bb23c0ab MH |
873 | if (sk->sk_state != BT_CONNECTED && |
874 | !rfcomm_pi(sk)->dlc->defer_setup) { | |
1da177e4 LT |
875 | err = -ENOTCONN; |
876 | break; | |
877 | } | |
878 | ||
879 | l2cap_sk = rfcomm_pi(sk)->dlc->session->sock->sk; | |
880 | ||
881 | cinfo.hci_handle = l2cap_pi(l2cap_sk)->conn->hcon->handle; | |
882 | memcpy(cinfo.dev_class, l2cap_pi(l2cap_sk)->conn->hcon->dev_class, 3); | |
883 | ||
884 | len = min_t(unsigned int, len, sizeof(cinfo)); | |
885 | if (copy_to_user(optval, (char *) &cinfo, len)) | |
886 | err = -EFAULT; | |
887 | ||
888 | break; | |
889 | ||
890 | default: | |
891 | err = -ENOPROTOOPT; | |
892 | break; | |
893 | } | |
894 | ||
895 | release_sock(sk); | |
d58daf42 MH |
896 | return err; |
897 | } | |
898 | ||
899 | static int rfcomm_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen) | |
900 | { | |
901 | struct sock *sk = sock->sk; | |
9f2c8a03 | 902 | struct bt_security sec; |
d58daf42 MH |
903 | int len, err = 0; |
904 | ||
905 | BT_DBG("sk %p", sk); | |
906 | ||
907 | if (level == SOL_RFCOMM) | |
908 | return rfcomm_sock_getsockopt_old(sock, optname, optval, optlen); | |
909 | ||
0588d94f MH |
910 | if (level != SOL_BLUETOOTH) |
911 | return -ENOPROTOOPT; | |
912 | ||
d58daf42 MH |
913 | if (get_user(len, optlen)) |
914 | return -EFAULT; | |
915 | ||
916 | lock_sock(sk); | |
917 | ||
918 | switch (optname) { | |
9f2c8a03 | 919 | case BT_SECURITY: |
0588d94f MH |
920 | if (sk->sk_type != SOCK_STREAM) { |
921 | err = -EINVAL; | |
922 | break; | |
923 | } | |
924 | ||
9f2c8a03 MH |
925 | sec.level = rfcomm_pi(sk)->sec_level; |
926 | ||
927 | len = min_t(unsigned int, len, sizeof(sec)); | |
928 | if (copy_to_user(optval, (char *) &sec, len)) | |
929 | err = -EFAULT; | |
930 | ||
931 | break; | |
932 | ||
bb23c0ab MH |
933 | case BT_DEFER_SETUP: |
934 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
935 | err = -EINVAL; | |
936 | break; | |
937 | } | |
938 | ||
939 | if (put_user(bt_sk(sk)->defer_setup, (u32 __user *) optval)) | |
940 | err = -EFAULT; | |
941 | ||
942 | break; | |
943 | ||
d58daf42 MH |
944 | default: |
945 | err = -ENOPROTOOPT; | |
946 | break; | |
947 | } | |
948 | ||
949 | release_sock(sk); | |
1da177e4 LT |
950 | return err; |
951 | } | |
952 | ||
953 | static int rfcomm_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
954 | { | |
e19caae7 | 955 | struct sock *sk __maybe_unused = sock->sk; |
1da177e4 LT |
956 | int err; |
957 | ||
e19caae7 | 958 | BT_DBG("sk %p cmd %x arg %lx", sk, cmd, arg); |
1da177e4 | 959 | |
3241ad82 | 960 | err = bt_sock_ioctl(sock, cmd, arg); |
1da177e4 | 961 | |
3241ad82 | 962 | if (err == -ENOIOCTLCMD) { |
1da177e4 | 963 | #ifdef CONFIG_BT_RFCOMM_TTY |
3241ad82 MH |
964 | lock_sock(sk); |
965 | err = rfcomm_dev_ioctl(sk, cmd, (void __user *) arg); | |
966 | release_sock(sk); | |
1da177e4 | 967 | #else |
3241ad82 | 968 | err = -EOPNOTSUPP; |
1da177e4 | 969 | #endif |
3241ad82 | 970 | } |
1da177e4 | 971 | |
1da177e4 LT |
972 | return err; |
973 | } | |
974 | ||
975 | static int rfcomm_sock_shutdown(struct socket *sock, int how) | |
976 | { | |
977 | struct sock *sk = sock->sk; | |
978 | int err = 0; | |
979 | ||
980 | BT_DBG("sock %p, sk %p", sock, sk); | |
981 | ||
982 | if (!sk) return 0; | |
983 | ||
984 | lock_sock(sk); | |
985 | if (!sk->sk_shutdown) { | |
986 | sk->sk_shutdown = SHUTDOWN_MASK; | |
987 | __rfcomm_sock_close(sk); | |
988 | ||
989 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime) | |
990 | err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime); | |
991 | } | |
992 | release_sock(sk); | |
993 | return err; | |
994 | } | |
995 | ||
996 | static int rfcomm_sock_release(struct socket *sock) | |
997 | { | |
998 | struct sock *sk = sock->sk; | |
999 | int err; | |
1000 | ||
1001 | BT_DBG("sock %p, sk %p", sock, sk); | |
1002 | ||
1003 | if (!sk) | |
1004 | return 0; | |
1005 | ||
1006 | err = rfcomm_sock_shutdown(sock, 2); | |
1007 | ||
1008 | sock_orphan(sk); | |
1009 | rfcomm_sock_kill(sk); | |
1010 | return err; | |
1011 | } | |
1012 | ||
8e87d142 | 1013 | /* ---- RFCOMM core layer callbacks ---- |
1da177e4 LT |
1014 | * |
1015 | * called under rfcomm_lock() | |
1016 | */ | |
1017 | int rfcomm_connect_ind(struct rfcomm_session *s, u8 channel, struct rfcomm_dlc **d) | |
1018 | { | |
1019 | struct sock *sk, *parent; | |
1020 | bdaddr_t src, dst; | |
1021 | int result = 0; | |
1022 | ||
1023 | BT_DBG("session %p channel %d", s, channel); | |
1024 | ||
1025 | rfcomm_session_getaddr(s, &src, &dst); | |
1026 | ||
1027 | /* Check if we have socket listening on channel */ | |
1028 | parent = rfcomm_get_sock_by_channel(BT_LISTEN, channel, &src); | |
1029 | if (!parent) | |
1030 | return 0; | |
1031 | ||
1032 | /* Check for backlog size */ | |
1033 | if (sk_acceptq_is_full(parent)) { | |
8e87d142 | 1034 | BT_DBG("backlog full %d", parent->sk_ack_backlog); |
1da177e4 LT |
1035 | goto done; |
1036 | } | |
1037 | ||
3b1e0a65 | 1038 | sk = rfcomm_sock_alloc(sock_net(parent), NULL, BTPROTO_RFCOMM, GFP_ATOMIC); |
1da177e4 LT |
1039 | if (!sk) |
1040 | goto done; | |
1041 | ||
1042 | rfcomm_sock_init(sk, parent); | |
1043 | bacpy(&bt_sk(sk)->src, &src); | |
1044 | bacpy(&bt_sk(sk)->dst, &dst); | |
1045 | rfcomm_pi(sk)->channel = channel; | |
1046 | ||
1047 | sk->sk_state = BT_CONFIG; | |
1048 | bt_accept_enqueue(parent, sk); | |
1049 | ||
1050 | /* Accept connection and return socket DLC */ | |
1051 | *d = rfcomm_pi(sk)->dlc; | |
1052 | result = 1; | |
1053 | ||
1054 | done: | |
1055 | bh_unlock_sock(parent); | |
bb23c0ab MH |
1056 | |
1057 | if (bt_sk(parent)->defer_setup) | |
1058 | parent->sk_state_change(parent); | |
1059 | ||
1da177e4 LT |
1060 | return result; |
1061 | } | |
1062 | ||
be9d1227 | 1063 | static ssize_t rfcomm_sock_sysfs_show(struct class *dev, char *buf) |
1da177e4 LT |
1064 | { |
1065 | struct sock *sk; | |
1066 | struct hlist_node *node; | |
be9d1227 | 1067 | char *str = buf; |
1da177e4 LT |
1068 | |
1069 | read_lock_bh(&rfcomm_sk_list.lock); | |
1070 | ||
be9d1227 MH |
1071 | sk_for_each(sk, node, &rfcomm_sk_list.head) { |
1072 | str += sprintf(str, "%s %s %d %d\n", | |
1073 | batostr(&bt_sk(sk)->src), batostr(&bt_sk(sk)->dst), | |
1074 | sk->sk_state, rfcomm_pi(sk)->channel); | |
1075 | } | |
1da177e4 | 1076 | |
1da177e4 | 1077 | read_unlock_bh(&rfcomm_sk_list.lock); |
1da177e4 | 1078 | |
be9d1227 | 1079 | return (str - buf); |
1da177e4 LT |
1080 | } |
1081 | ||
be9d1227 | 1082 | static CLASS_ATTR(rfcomm, S_IRUGO, rfcomm_sock_sysfs_show, NULL); |
1da177e4 | 1083 | |
90ddc4f0 | 1084 | static const struct proto_ops rfcomm_sock_ops = { |
1da177e4 LT |
1085 | .family = PF_BLUETOOTH, |
1086 | .owner = THIS_MODULE, | |
1087 | .release = rfcomm_sock_release, | |
1088 | .bind = rfcomm_sock_bind, | |
1089 | .connect = rfcomm_sock_connect, | |
1090 | .listen = rfcomm_sock_listen, | |
1091 | .accept = rfcomm_sock_accept, | |
1092 | .getname = rfcomm_sock_getname, | |
1093 | .sendmsg = rfcomm_sock_sendmsg, | |
1094 | .recvmsg = rfcomm_sock_recvmsg, | |
1095 | .shutdown = rfcomm_sock_shutdown, | |
1096 | .setsockopt = rfcomm_sock_setsockopt, | |
1097 | .getsockopt = rfcomm_sock_getsockopt, | |
1098 | .ioctl = rfcomm_sock_ioctl, | |
1099 | .poll = bt_sock_poll, | |
1100 | .socketpair = sock_no_socketpair, | |
1101 | .mmap = sock_no_mmap | |
1102 | }; | |
1103 | ||
1104 | static struct net_proto_family rfcomm_sock_family_ops = { | |
1105 | .family = PF_BLUETOOTH, | |
1106 | .owner = THIS_MODULE, | |
1107 | .create = rfcomm_sock_create | |
1108 | }; | |
1109 | ||
be9d1227 | 1110 | int __init rfcomm_init_sockets(void) |
1da177e4 LT |
1111 | { |
1112 | int err; | |
1113 | ||
1114 | err = proto_register(&rfcomm_proto, 0); | |
1115 | if (err < 0) | |
1116 | return err; | |
1117 | ||
1118 | err = bt_sock_register(BTPROTO_RFCOMM, &rfcomm_sock_family_ops); | |
1119 | if (err < 0) | |
1120 | goto error; | |
1121 | ||
df5c37ea MH |
1122 | if (class_create_file(bt_class, &class_attr_rfcomm) < 0) |
1123 | BT_ERR("Failed to create RFCOMM info file"); | |
1da177e4 LT |
1124 | |
1125 | BT_INFO("RFCOMM socket layer initialized"); | |
1126 | ||
1127 | return 0; | |
1128 | ||
1129 | error: | |
1130 | BT_ERR("RFCOMM socket layer registration failed"); | |
1131 | proto_unregister(&rfcomm_proto); | |
1132 | return err; | |
1133 | } | |
1134 | ||
af0d3b10 | 1135 | void rfcomm_cleanup_sockets(void) |
1da177e4 | 1136 | { |
a91f2e39 | 1137 | class_remove_file(bt_class, &class_attr_rfcomm); |
1da177e4 LT |
1138 | |
1139 | if (bt_sock_unregister(BTPROTO_RFCOMM) < 0) | |
1140 | BT_ERR("RFCOMM socket layer unregistration failed"); | |
1141 | ||
1142 | proto_unregister(&rfcomm_proto); | |
1143 | } |