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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 | ||
8c520a59 | 28 | #include <linux/export.h> |
aef7d97c | 29 | #include <linux/debugfs.h> |
1da177e4 LT |
30 | |
31 | #include <net/bluetooth/bluetooth.h> | |
32 | #include <net/bluetooth/hci_core.h> | |
33 | #include <net/bluetooth/l2cap.h> | |
34 | #include <net/bluetooth/rfcomm.h> | |
35 | ||
90ddc4f0 | 36 | static const struct proto_ops rfcomm_sock_ops; |
1da177e4 LT |
37 | |
38 | static struct bt_sock_list rfcomm_sk_list = { | |
d5fb2962 | 39 | .lock = __RW_LOCK_UNLOCKED(rfcomm_sk_list.lock) |
1da177e4 LT |
40 | }; |
41 | ||
42 | static void rfcomm_sock_close(struct sock *sk); | |
43 | static void rfcomm_sock_kill(struct sock *sk); | |
44 | ||
45 | /* ---- DLC callbacks ---- | |
46 | * | |
47 | * called under rfcomm_dlc_lock() | |
48 | */ | |
49 | static void rfcomm_sk_data_ready(struct rfcomm_dlc *d, struct sk_buff *skb) | |
50 | { | |
51 | struct sock *sk = d->owner; | |
52 | if (!sk) | |
53 | return; | |
54 | ||
55 | atomic_add(skb->len, &sk->sk_rmem_alloc); | |
56 | skb_queue_tail(&sk->sk_receive_queue, skb); | |
676d2369 | 57 | sk->sk_data_ready(sk); |
1da177e4 LT |
58 | |
59 | if (atomic_read(&sk->sk_rmem_alloc) >= sk->sk_rcvbuf) | |
60 | rfcomm_dlc_throttle(d); | |
61 | } | |
62 | ||
63 | static void rfcomm_sk_state_change(struct rfcomm_dlc *d, int err) | |
64 | { | |
65 | struct sock *sk = d->owner, *parent; | |
fad003b6 GP |
66 | unsigned long flags; |
67 | ||
1da177e4 LT |
68 | if (!sk) |
69 | return; | |
70 | ||
71 | BT_DBG("dlc %p state %ld err %d", d, d->state, err); | |
72 | ||
fad003b6 | 73 | local_irq_save(flags); |
1da177e4 LT |
74 | bh_lock_sock(sk); |
75 | ||
76 | if (err) | |
77 | sk->sk_err = err; | |
78 | ||
79 | sk->sk_state = d->state; | |
80 | ||
81 | parent = bt_sk(sk)->parent; | |
82 | if (parent) { | |
83 | if (d->state == BT_CLOSED) { | |
84 | sock_set_flag(sk, SOCK_ZAPPED); | |
85 | bt_accept_unlink(sk); | |
86 | } | |
676d2369 | 87 | parent->sk_data_ready(parent); |
1da177e4 LT |
88 | } else { |
89 | if (d->state == BT_CONNECTED) | |
94a86df0 MH |
90 | rfcomm_session_getaddr(d->session, |
91 | &rfcomm_pi(sk)->src, NULL); | |
1da177e4 LT |
92 | sk->sk_state_change(sk); |
93 | } | |
94 | ||
95 | bh_unlock_sock(sk); | |
fad003b6 | 96 | local_irq_restore(flags); |
1da177e4 LT |
97 | |
98 | if (parent && sock_flag(sk, SOCK_ZAPPED)) { | |
99 | /* We have to drop DLC lock here, otherwise | |
100 | * rfcomm_sock_destruct() will dead lock. */ | |
101 | rfcomm_dlc_unlock(d); | |
102 | rfcomm_sock_kill(sk); | |
103 | rfcomm_dlc_lock(d); | |
104 | } | |
105 | } | |
106 | ||
107 | /* ---- Socket functions ---- */ | |
b1765e7a | 108 | static struct sock *__rfcomm_get_listen_sock_by_addr(u8 channel, bdaddr_t *src) |
1da177e4 LT |
109 | { |
110 | struct sock *sk = NULL; | |
1da177e4 | 111 | |
b67bfe0d | 112 | sk_for_each(sk, &rfcomm_sk_list.head) { |
b1765e7a AK |
113 | if (rfcomm_pi(sk)->channel != channel) |
114 | continue; | |
115 | ||
116 | if (bacmp(&rfcomm_pi(sk)->src, src)) | |
117 | continue; | |
118 | ||
119 | if (sk->sk_state == BT_BOUND || sk->sk_state == BT_LISTEN) | |
1da177e4 LT |
120 | break; |
121 | } | |
122 | ||
b67bfe0d | 123 | return sk ? sk : NULL; |
1da177e4 LT |
124 | } |
125 | ||
126 | /* Find socket with channel and source bdaddr. | |
127 | * Returns closest match. | |
128 | */ | |
eeb36656 | 129 | static struct sock *rfcomm_get_sock_by_channel(int state, u8 channel, bdaddr_t *src) |
1da177e4 LT |
130 | { |
131 | struct sock *sk = NULL, *sk1 = NULL; | |
1da177e4 | 132 | |
eeb36656 GP |
133 | read_lock(&rfcomm_sk_list.lock); |
134 | ||
b67bfe0d | 135 | sk_for_each(sk, &rfcomm_sk_list.head) { |
1da177e4 LT |
136 | if (state && sk->sk_state != state) |
137 | continue; | |
138 | ||
139 | if (rfcomm_pi(sk)->channel == channel) { | |
140 | /* Exact match. */ | |
94a86df0 | 141 | if (!bacmp(&rfcomm_pi(sk)->src, src)) |
1da177e4 LT |
142 | break; |
143 | ||
144 | /* Closest match */ | |
94a86df0 | 145 | if (!bacmp(&rfcomm_pi(sk)->src, BDADDR_ANY)) |
1da177e4 LT |
146 | sk1 = sk; |
147 | } | |
148 | } | |
1da177e4 | 149 | |
1da177e4 | 150 | read_unlock(&rfcomm_sk_list.lock); |
eeb36656 | 151 | |
b67bfe0d | 152 | return sk ? sk : sk1; |
1da177e4 LT |
153 | } |
154 | ||
155 | static void rfcomm_sock_destruct(struct sock *sk) | |
156 | { | |
157 | struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc; | |
158 | ||
159 | BT_DBG("sk %p dlc %p", sk, d); | |
160 | ||
161 | skb_queue_purge(&sk->sk_receive_queue); | |
162 | skb_queue_purge(&sk->sk_write_queue); | |
163 | ||
164 | rfcomm_dlc_lock(d); | |
165 | rfcomm_pi(sk)->dlc = NULL; | |
166 | ||
167 | /* Detach DLC if it's owned by this socket */ | |
168 | if (d->owner == sk) | |
169 | d->owner = NULL; | |
170 | rfcomm_dlc_unlock(d); | |
171 | ||
172 | rfcomm_dlc_put(d); | |
173 | } | |
174 | ||
175 | static void rfcomm_sock_cleanup_listen(struct sock *parent) | |
176 | { | |
177 | struct sock *sk; | |
178 | ||
179 | BT_DBG("parent %p", parent); | |
180 | ||
181 | /* Close not yet accepted dlcs */ | |
182 | while ((sk = bt_accept_dequeue(parent, NULL))) { | |
183 | rfcomm_sock_close(sk); | |
184 | rfcomm_sock_kill(sk); | |
185 | } | |
186 | ||
187 | parent->sk_state = BT_CLOSED; | |
188 | sock_set_flag(parent, SOCK_ZAPPED); | |
189 | } | |
190 | ||
191 | /* Kill socket (only if zapped and orphan) | |
192 | * Must be called on unlocked socket. | |
193 | */ | |
194 | static void rfcomm_sock_kill(struct sock *sk) | |
195 | { | |
196 | if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket) | |
197 | return; | |
198 | ||
199 | BT_DBG("sk %p state %d refcnt %d", sk, sk->sk_state, atomic_read(&sk->sk_refcnt)); | |
200 | ||
201 | /* Kill poor orphan */ | |
202 | bt_sock_unlink(&rfcomm_sk_list, sk); | |
203 | sock_set_flag(sk, SOCK_DEAD); | |
204 | sock_put(sk); | |
205 | } | |
206 | ||
207 | static void __rfcomm_sock_close(struct sock *sk) | |
208 | { | |
209 | struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc; | |
210 | ||
211 | BT_DBG("sk %p state %d socket %p", sk, sk->sk_state, sk->sk_socket); | |
212 | ||
213 | switch (sk->sk_state) { | |
214 | case BT_LISTEN: | |
215 | rfcomm_sock_cleanup_listen(sk); | |
216 | break; | |
217 | ||
218 | case BT_CONNECT: | |
219 | case BT_CONNECT2: | |
220 | case BT_CONFIG: | |
221 | case BT_CONNECTED: | |
222 | rfcomm_dlc_close(d, 0); | |
223 | ||
224 | default: | |
225 | sock_set_flag(sk, SOCK_ZAPPED); | |
226 | break; | |
227 | } | |
228 | } | |
229 | ||
230 | /* Close socket. | |
231 | * Must be called on unlocked socket. | |
232 | */ | |
233 | static void rfcomm_sock_close(struct sock *sk) | |
234 | { | |
235 | lock_sock(sk); | |
236 | __rfcomm_sock_close(sk); | |
237 | release_sock(sk); | |
238 | } | |
239 | ||
240 | static void rfcomm_sock_init(struct sock *sk, struct sock *parent) | |
241 | { | |
242 | struct rfcomm_pinfo *pi = rfcomm_pi(sk); | |
243 | ||
244 | BT_DBG("sk %p", sk); | |
245 | ||
246 | if (parent) { | |
247 | sk->sk_type = parent->sk_type; | |
c5daa683 GP |
248 | pi->dlc->defer_setup = test_bit(BT_SK_DEFER_SETUP, |
249 | &bt_sk(parent)->flags); | |
9f2c8a03 MH |
250 | |
251 | pi->sec_level = rfcomm_pi(parent)->sec_level; | |
252 | pi->role_switch = rfcomm_pi(parent)->role_switch; | |
6230c9b4 PM |
253 | |
254 | security_sk_clone(parent, sk); | |
1da177e4 | 255 | } else { |
bb23c0ab | 256 | pi->dlc->defer_setup = 0; |
9f2c8a03 MH |
257 | |
258 | pi->sec_level = BT_SECURITY_LOW; | |
259 | pi->role_switch = 0; | |
1da177e4 LT |
260 | } |
261 | ||
9f2c8a03 MH |
262 | pi->dlc->sec_level = pi->sec_level; |
263 | pi->dlc->role_switch = pi->role_switch; | |
1da177e4 LT |
264 | } |
265 | ||
266 | static struct proto rfcomm_proto = { | |
267 | .name = "RFCOMM", | |
268 | .owner = THIS_MODULE, | |
269 | .obj_size = sizeof(struct rfcomm_pinfo) | |
270 | }; | |
271 | ||
11aa9c28 | 272 | static struct sock *rfcomm_sock_alloc(struct net *net, struct socket *sock, int proto, gfp_t prio, int kern) |
1da177e4 LT |
273 | { |
274 | struct rfcomm_dlc *d; | |
275 | struct sock *sk; | |
276 | ||
11aa9c28 | 277 | sk = sk_alloc(net, PF_BLUETOOTH, prio, &rfcomm_proto, kern); |
1da177e4 LT |
278 | if (!sk) |
279 | return NULL; | |
280 | ||
281 | sock_init_data(sock, sk); | |
282 | INIT_LIST_HEAD(&bt_sk(sk)->accept_q); | |
283 | ||
284 | d = rfcomm_dlc_alloc(prio); | |
285 | if (!d) { | |
286 | sk_free(sk); | |
287 | return NULL; | |
288 | } | |
289 | ||
290 | d->data_ready = rfcomm_sk_data_ready; | |
291 | d->state_change = rfcomm_sk_state_change; | |
292 | ||
293 | rfcomm_pi(sk)->dlc = d; | |
294 | d->owner = sk; | |
295 | ||
296 | sk->sk_destruct = rfcomm_sock_destruct; | |
297 | sk->sk_sndtimeo = RFCOMM_CONN_TIMEOUT; | |
298 | ||
77db1980 MH |
299 | sk->sk_sndbuf = RFCOMM_MAX_CREDITS * RFCOMM_DEFAULT_MTU * 10; |
300 | sk->sk_rcvbuf = RFCOMM_MAX_CREDITS * RFCOMM_DEFAULT_MTU * 10; | |
1da177e4 LT |
301 | |
302 | sock_reset_flag(sk, SOCK_ZAPPED); | |
303 | ||
304 | sk->sk_protocol = proto; | |
77db1980 | 305 | sk->sk_state = BT_OPEN; |
1da177e4 LT |
306 | |
307 | bt_sock_link(&rfcomm_sk_list, sk); | |
308 | ||
309 | BT_DBG("sk %p", sk); | |
310 | return sk; | |
311 | } | |
312 | ||
3f378b68 EP |
313 | static int rfcomm_sock_create(struct net *net, struct socket *sock, |
314 | int protocol, int kern) | |
1da177e4 LT |
315 | { |
316 | struct sock *sk; | |
317 | ||
318 | BT_DBG("sock %p", sock); | |
319 | ||
320 | sock->state = SS_UNCONNECTED; | |
321 | ||
322 | if (sock->type != SOCK_STREAM && sock->type != SOCK_RAW) | |
323 | return -ESOCKTNOSUPPORT; | |
324 | ||
325 | sock->ops = &rfcomm_sock_ops; | |
326 | ||
11aa9c28 | 327 | sk = rfcomm_sock_alloc(net, sock, protocol, GFP_ATOMIC, kern); |
74da626a | 328 | if (!sk) |
1da177e4 LT |
329 | return -ENOMEM; |
330 | ||
331 | rfcomm_sock_init(sk, NULL); | |
332 | return 0; | |
333 | } | |
334 | ||
335 | static int rfcomm_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len) | |
336 | { | |
951b6a07 | 337 | struct sockaddr_rc sa; |
1da177e4 | 338 | struct sock *sk = sock->sk; |
951b6a07 | 339 | int len, err = 0; |
1da177e4 LT |
340 | |
341 | if (!addr || addr->sa_family != AF_BLUETOOTH) | |
342 | return -EINVAL; | |
343 | ||
951b6a07 JK |
344 | memset(&sa, 0, sizeof(sa)); |
345 | len = min_t(unsigned int, sizeof(sa), addr_len); | |
346 | memcpy(&sa, addr, len); | |
347 | ||
348 | BT_DBG("sk %p %pMR", sk, &sa.rc_bdaddr); | |
349 | ||
1da177e4 LT |
350 | lock_sock(sk); |
351 | ||
352 | if (sk->sk_state != BT_OPEN) { | |
353 | err = -EBADFD; | |
354 | goto done; | |
355 | } | |
356 | ||
354d28d5 MH |
357 | if (sk->sk_type != SOCK_STREAM) { |
358 | err = -EINVAL; | |
359 | goto done; | |
360 | } | |
361 | ||
95ca83f4 | 362 | write_lock(&rfcomm_sk_list.lock); |
1da177e4 | 363 | |
951b6a07 JK |
364 | if (sa.rc_channel && |
365 | __rfcomm_get_listen_sock_by_addr(sa.rc_channel, &sa.rc_bdaddr)) { | |
1da177e4 LT |
366 | err = -EADDRINUSE; |
367 | } else { | |
368 | /* Save source address */ | |
951b6a07 JK |
369 | bacpy(&rfcomm_pi(sk)->src, &sa.rc_bdaddr); |
370 | rfcomm_pi(sk)->channel = sa.rc_channel; | |
1da177e4 LT |
371 | sk->sk_state = BT_BOUND; |
372 | } | |
373 | ||
95ca83f4 | 374 | write_unlock(&rfcomm_sk_list.lock); |
1da177e4 LT |
375 | |
376 | done: | |
377 | release_sock(sk); | |
378 | return err; | |
379 | } | |
380 | ||
381 | static int rfcomm_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags) | |
382 | { | |
383 | struct sockaddr_rc *sa = (struct sockaddr_rc *) addr; | |
384 | struct sock *sk = sock->sk; | |
385 | struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc; | |
386 | int err = 0; | |
387 | ||
388 | BT_DBG("sk %p", sk); | |
389 | ||
6503d961 CG |
390 | if (alen < sizeof(struct sockaddr_rc) || |
391 | addr->sa_family != AF_BLUETOOTH) | |
1da177e4 LT |
392 | return -EINVAL; |
393 | ||
354d28d5 | 394 | lock_sock(sk); |
1da177e4 | 395 | |
354d28d5 MH |
396 | if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND) { |
397 | err = -EBADFD; | |
398 | goto done; | |
399 | } | |
1da177e4 | 400 | |
354d28d5 MH |
401 | if (sk->sk_type != SOCK_STREAM) { |
402 | err = -EINVAL; | |
403 | goto done; | |
404 | } | |
1da177e4 LT |
405 | |
406 | sk->sk_state = BT_CONNECT; | |
94a86df0 | 407 | bacpy(&rfcomm_pi(sk)->dst, &sa->rc_bdaddr); |
1da177e4 LT |
408 | rfcomm_pi(sk)->channel = sa->rc_channel; |
409 | ||
9f2c8a03 MH |
410 | d->sec_level = rfcomm_pi(sk)->sec_level; |
411 | d->role_switch = rfcomm_pi(sk)->role_switch; | |
77db1980 | 412 | |
94a86df0 MH |
413 | err = rfcomm_dlc_open(d, &rfcomm_pi(sk)->src, &sa->rc_bdaddr, |
414 | sa->rc_channel); | |
1da177e4 LT |
415 | if (!err) |
416 | err = bt_sock_wait_state(sk, BT_CONNECTED, | |
417 | sock_sndtimeo(sk, flags & O_NONBLOCK)); | |
418 | ||
354d28d5 | 419 | done: |
1da177e4 LT |
420 | release_sock(sk); |
421 | return err; | |
422 | } | |
423 | ||
424 | static int rfcomm_sock_listen(struct socket *sock, int backlog) | |
425 | { | |
426 | struct sock *sk = sock->sk; | |
427 | int err = 0; | |
428 | ||
429 | BT_DBG("sk %p backlog %d", sk, backlog); | |
430 | ||
431 | lock_sock(sk); | |
432 | ||
433 | if (sk->sk_state != BT_BOUND) { | |
434 | err = -EBADFD; | |
435 | goto done; | |
436 | } | |
437 | ||
354d28d5 MH |
438 | if (sk->sk_type != SOCK_STREAM) { |
439 | err = -EINVAL; | |
440 | goto done; | |
441 | } | |
442 | ||
1da177e4 | 443 | if (!rfcomm_pi(sk)->channel) { |
94a86df0 | 444 | bdaddr_t *src = &rfcomm_pi(sk)->src; |
1da177e4 LT |
445 | u8 channel; |
446 | ||
447 | err = -EINVAL; | |
448 | ||
95ca83f4 | 449 | write_lock(&rfcomm_sk_list.lock); |
1da177e4 LT |
450 | |
451 | for (channel = 1; channel < 31; channel++) | |
b1765e7a | 452 | if (!__rfcomm_get_listen_sock_by_addr(channel, src)) { |
1da177e4 LT |
453 | rfcomm_pi(sk)->channel = channel; |
454 | err = 0; | |
455 | break; | |
456 | } | |
457 | ||
95ca83f4 | 458 | write_unlock(&rfcomm_sk_list.lock); |
1da177e4 LT |
459 | |
460 | if (err < 0) | |
461 | goto done; | |
462 | } | |
463 | ||
464 | sk->sk_max_ack_backlog = backlog; | |
465 | sk->sk_ack_backlog = 0; | |
466 | sk->sk_state = BT_LISTEN; | |
467 | ||
468 | done: | |
469 | release_sock(sk); | |
470 | return err; | |
471 | } | |
472 | ||
473 | static int rfcomm_sock_accept(struct socket *sock, struct socket *newsock, int flags) | |
474 | { | |
dfb2fae7 | 475 | DEFINE_WAIT_FUNC(wait, woken_wake_function); |
1da177e4 LT |
476 | struct sock *sk = sock->sk, *nsk; |
477 | long timeo; | |
478 | int err = 0; | |
479 | ||
dc2a0e20 | 480 | lock_sock_nested(sk, SINGLE_DEPTH_NESTING); |
1da177e4 | 481 | |
354d28d5 MH |
482 | if (sk->sk_type != SOCK_STREAM) { |
483 | err = -EINVAL; | |
484 | goto done; | |
485 | } | |
486 | ||
1da177e4 LT |
487 | timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK); |
488 | ||
489 | BT_DBG("sk %p timeo %ld", sk, timeo); | |
490 | ||
491 | /* Wait for an incoming connection. (wake-one). */ | |
aa395145 | 492 | add_wait_queue_exclusive(sk_sleep(sk), &wait); |
950e2d51 | 493 | while (1) { |
950e2d51 PH |
494 | if (sk->sk_state != BT_LISTEN) { |
495 | err = -EBADFD; | |
1da177e4 LT |
496 | break; |
497 | } | |
498 | ||
950e2d51 PH |
499 | nsk = bt_accept_dequeue(sk, newsock); |
500 | if (nsk) | |
501 | break; | |
1da177e4 | 502 | |
950e2d51 PH |
503 | if (!timeo) { |
504 | err = -EAGAIN; | |
1da177e4 LT |
505 | break; |
506 | } | |
507 | ||
508 | if (signal_pending(current)) { | |
509 | err = sock_intr_errno(timeo); | |
510 | break; | |
511 | } | |
950e2d51 PH |
512 | |
513 | release_sock(sk); | |
dfb2fae7 PH |
514 | |
515 | timeo = wait_woken(&wait, TASK_INTERRUPTIBLE, timeo); | |
516 | ||
dc2a0e20 | 517 | lock_sock_nested(sk, SINGLE_DEPTH_NESTING); |
1da177e4 | 518 | } |
aa395145 | 519 | remove_wait_queue(sk_sleep(sk), &wait); |
1da177e4 LT |
520 | |
521 | if (err) | |
522 | goto done; | |
523 | ||
524 | newsock->state = SS_CONNECTED; | |
525 | ||
526 | BT_DBG("new socket %p", nsk); | |
527 | ||
528 | done: | |
529 | release_sock(sk); | |
530 | return err; | |
531 | } | |
532 | ||
533 | static int rfcomm_sock_getname(struct socket *sock, struct sockaddr *addr, int *len, int peer) | |
534 | { | |
535 | struct sockaddr_rc *sa = (struct sockaddr_rc *) addr; | |
536 | struct sock *sk = sock->sk; | |
537 | ||
538 | BT_DBG("sock %p, sk %p", sock, sk); | |
539 | ||
e8b1ab9e JH |
540 | if (peer && sk->sk_state != BT_CONNECTED && |
541 | sk->sk_state != BT_CONNECT && sk->sk_state != BT_CONNECT2) | |
35364c99 JH |
542 | return -ENOTCONN; |
543 | ||
9344a972 | 544 | memset(sa, 0, sizeof(*sa)); |
1da177e4 LT |
545 | sa->rc_family = AF_BLUETOOTH; |
546 | sa->rc_channel = rfcomm_pi(sk)->channel; | |
547 | if (peer) | |
94a86df0 | 548 | bacpy(&sa->rc_bdaddr, &rfcomm_pi(sk)->dst); |
1da177e4 | 549 | else |
94a86df0 | 550 | bacpy(&sa->rc_bdaddr, &rfcomm_pi(sk)->src); |
1da177e4 LT |
551 | |
552 | *len = sizeof(struct sockaddr_rc); | |
553 | return 0; | |
554 | } | |
555 | ||
1b784140 YX |
556 | static int rfcomm_sock_sendmsg(struct socket *sock, struct msghdr *msg, |
557 | size_t len) | |
1da177e4 LT |
558 | { |
559 | struct sock *sk = sock->sk; | |
560 | struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc; | |
561 | struct sk_buff *skb; | |
e793dcf0 | 562 | int sent; |
1da177e4 | 563 | |
bb23c0ab MH |
564 | if (test_bit(RFCOMM_DEFER_SETUP, &d->flags)) |
565 | return -ENOTCONN; | |
566 | ||
1da177e4 LT |
567 | if (msg->msg_flags & MSG_OOB) |
568 | return -EOPNOTSUPP; | |
569 | ||
570 | if (sk->sk_shutdown & SEND_SHUTDOWN) | |
571 | return -EPIPE; | |
572 | ||
573 | BT_DBG("sock %p, sk %p", sock, sk); | |
574 | ||
575 | lock_sock(sk); | |
576 | ||
e793dcf0 JH |
577 | sent = bt_sock_wait_ready(sk, msg->msg_flags); |
578 | if (sent) | |
579 | goto done; | |
580 | ||
1da177e4 LT |
581 | while (len) { |
582 | size_t size = min_t(size_t, len, d->mtu); | |
4d6a2188 | 583 | int err; |
8e87d142 | 584 | |
1da177e4 LT |
585 | skb = sock_alloc_send_skb(sk, size + RFCOMM_SKB_RESERVE, |
586 | msg->msg_flags & MSG_DONTWAIT, &err); | |
91aa35a5 VS |
587 | if (!skb) { |
588 | if (sent == 0) | |
589 | sent = err; | |
1da177e4 | 590 | break; |
91aa35a5 | 591 | } |
1da177e4 LT |
592 | skb_reserve(skb, RFCOMM_SKB_HEAD_RESERVE); |
593 | ||
6ce8e9ce | 594 | err = memcpy_from_msg(skb_put(skb, size), msg, size); |
1da177e4 LT |
595 | if (err) { |
596 | kfree_skb(skb); | |
4d6a2188 MH |
597 | if (sent == 0) |
598 | sent = err; | |
1da177e4 LT |
599 | break; |
600 | } | |
601 | ||
262038fc LAD |
602 | skb->priority = sk->sk_priority; |
603 | ||
1da177e4 LT |
604 | err = rfcomm_dlc_send(d, skb); |
605 | if (err < 0) { | |
606 | kfree_skb(skb); | |
4d6a2188 MH |
607 | if (sent == 0) |
608 | sent = err; | |
1da177e4 LT |
609 | break; |
610 | } | |
611 | ||
612 | sent += size; | |
613 | len -= size; | |
614 | } | |
615 | ||
e793dcf0 | 616 | done: |
1da177e4 LT |
617 | release_sock(sk); |
618 | ||
4d6a2188 | 619 | return sent; |
1da177e4 LT |
620 | } |
621 | ||
1b784140 YX |
622 | static int rfcomm_sock_recvmsg(struct socket *sock, struct msghdr *msg, |
623 | size_t size, int flags) | |
1da177e4 LT |
624 | { |
625 | struct sock *sk = sock->sk; | |
bb23c0ab | 626 | struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc; |
3d7d01df | 627 | int len; |
1da177e4 | 628 | |
bb23c0ab MH |
629 | if (test_and_clear_bit(RFCOMM_DEFER_SETUP, &d->flags)) { |
630 | rfcomm_dlc_accept(d); | |
631 | return 0; | |
632 | } | |
633 | ||
1b784140 | 634 | len = bt_sock_stream_recvmsg(sock, msg, size, flags); |
1da177e4 LT |
635 | |
636 | lock_sock(sk); | |
3d7d01df MM |
637 | if (!(flags & MSG_PEEK) && len > 0) |
638 | atomic_sub(len, &sk->sk_rmem_alloc); | |
1da177e4 | 639 | |
1da177e4 LT |
640 | if (atomic_read(&sk->sk_rmem_alloc) <= (sk->sk_rcvbuf >> 2)) |
641 | rfcomm_dlc_unthrottle(rfcomm_pi(sk)->dlc); | |
1da177e4 | 642 | release_sock(sk); |
3d7d01df MM |
643 | |
644 | return len; | |
1da177e4 LT |
645 | } |
646 | ||
b7058842 | 647 | static int rfcomm_sock_setsockopt_old(struct socket *sock, int optname, char __user *optval, unsigned int optlen) |
1da177e4 LT |
648 | { |
649 | struct sock *sk = sock->sk; | |
650 | int err = 0; | |
651 | u32 opt; | |
652 | ||
653 | BT_DBG("sk %p", sk); | |
654 | ||
655 | lock_sock(sk); | |
656 | ||
657 | switch (optname) { | |
658 | case RFCOMM_LM: | |
659 | if (get_user(opt, (u32 __user *) optval)) { | |
660 | err = -EFAULT; | |
661 | break; | |
662 | } | |
663 | ||
2c068e0b MH |
664 | if (opt & RFCOMM_LM_FIPS) { |
665 | err = -EINVAL; | |
666 | break; | |
667 | } | |
668 | ||
9f2c8a03 MH |
669 | if (opt & RFCOMM_LM_AUTH) |
670 | rfcomm_pi(sk)->sec_level = BT_SECURITY_LOW; | |
671 | if (opt & RFCOMM_LM_ENCRYPT) | |
672 | rfcomm_pi(sk)->sec_level = BT_SECURITY_MEDIUM; | |
673 | if (opt & RFCOMM_LM_SECURE) | |
674 | rfcomm_pi(sk)->sec_level = BT_SECURITY_HIGH; | |
675 | ||
676 | rfcomm_pi(sk)->role_switch = (opt & RFCOMM_LM_MASTER); | |
1da177e4 LT |
677 | break; |
678 | ||
679 | default: | |
680 | err = -ENOPROTOOPT; | |
681 | break; | |
682 | } | |
683 | ||
684 | release_sock(sk); | |
685 | return err; | |
686 | } | |
687 | ||
b7058842 | 688 | static int rfcomm_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen) |
d58daf42 MH |
689 | { |
690 | struct sock *sk = sock->sk; | |
9f2c8a03 | 691 | struct bt_security sec; |
d0fad89d SB |
692 | int err = 0; |
693 | size_t len; | |
bb23c0ab | 694 | u32 opt; |
d58daf42 MH |
695 | |
696 | BT_DBG("sk %p", sk); | |
697 | ||
698 | if (level == SOL_RFCOMM) | |
699 | return rfcomm_sock_setsockopt_old(sock, optname, optval, optlen); | |
700 | ||
0588d94f MH |
701 | if (level != SOL_BLUETOOTH) |
702 | return -ENOPROTOOPT; | |
703 | ||
d58daf42 MH |
704 | lock_sock(sk); |
705 | ||
706 | switch (optname) { | |
9f2c8a03 | 707 | case BT_SECURITY: |
0588d94f MH |
708 | if (sk->sk_type != SOCK_STREAM) { |
709 | err = -EINVAL; | |
710 | break; | |
711 | } | |
712 | ||
9f2c8a03 MH |
713 | sec.level = BT_SECURITY_LOW; |
714 | ||
715 | len = min_t(unsigned int, sizeof(sec), optlen); | |
716 | if (copy_from_user((char *) &sec, optval, len)) { | |
717 | err = -EFAULT; | |
718 | break; | |
719 | } | |
720 | ||
721 | if (sec.level > BT_SECURITY_HIGH) { | |
722 | err = -EINVAL; | |
723 | break; | |
724 | } | |
725 | ||
726 | rfcomm_pi(sk)->sec_level = sec.level; | |
727 | break; | |
728 | ||
bb23c0ab MH |
729 | case BT_DEFER_SETUP: |
730 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
731 | err = -EINVAL; | |
732 | break; | |
733 | } | |
734 | ||
735 | if (get_user(opt, (u32 __user *) optval)) { | |
736 | err = -EFAULT; | |
737 | break; | |
738 | } | |
739 | ||
c5daa683 GP |
740 | if (opt) |
741 | set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); | |
742 | else | |
743 | clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); | |
744 | ||
bb23c0ab MH |
745 | break; |
746 | ||
d58daf42 MH |
747 | default: |
748 | err = -ENOPROTOOPT; | |
749 | break; | |
750 | } | |
751 | ||
752 | release_sock(sk); | |
753 | return err; | |
754 | } | |
755 | ||
756 | static int rfcomm_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen) | |
1da177e4 LT |
757 | { |
758 | struct sock *sk = sock->sk; | |
60c7a3c9 MH |
759 | struct sock *l2cap_sk; |
760 | struct l2cap_conn *conn; | |
1da177e4 LT |
761 | struct rfcomm_conninfo cinfo; |
762 | int len, err = 0; | |
9f2c8a03 | 763 | u32 opt; |
1da177e4 LT |
764 | |
765 | BT_DBG("sk %p", sk); | |
766 | ||
767 | if (get_user(len, optlen)) | |
768 | return -EFAULT; | |
769 | ||
770 | lock_sock(sk); | |
771 | ||
772 | switch (optname) { | |
773 | case RFCOMM_LM: | |
9f2c8a03 MH |
774 | switch (rfcomm_pi(sk)->sec_level) { |
775 | case BT_SECURITY_LOW: | |
776 | opt = RFCOMM_LM_AUTH; | |
777 | break; | |
778 | case BT_SECURITY_MEDIUM: | |
779 | opt = RFCOMM_LM_AUTH | RFCOMM_LM_ENCRYPT; | |
780 | break; | |
781 | case BT_SECURITY_HIGH: | |
782 | opt = RFCOMM_LM_AUTH | RFCOMM_LM_ENCRYPT | | |
2c068e0b MH |
783 | RFCOMM_LM_SECURE; |
784 | break; | |
785 | case BT_SECURITY_FIPS: | |
786 | opt = RFCOMM_LM_AUTH | RFCOMM_LM_ENCRYPT | | |
787 | RFCOMM_LM_SECURE | RFCOMM_LM_FIPS; | |
9f2c8a03 MH |
788 | break; |
789 | default: | |
790 | opt = 0; | |
791 | break; | |
792 | } | |
793 | ||
794 | if (rfcomm_pi(sk)->role_switch) | |
795 | opt |= RFCOMM_LM_MASTER; | |
796 | ||
797 | if (put_user(opt, (u32 __user *) optval)) | |
1da177e4 | 798 | err = -EFAULT; |
2c068e0b | 799 | |
1da177e4 LT |
800 | break; |
801 | ||
802 | case RFCOMM_CONNINFO: | |
bb23c0ab MH |
803 | if (sk->sk_state != BT_CONNECTED && |
804 | !rfcomm_pi(sk)->dlc->defer_setup) { | |
1da177e4 LT |
805 | err = -ENOTCONN; |
806 | break; | |
807 | } | |
808 | ||
60c7a3c9 MH |
809 | l2cap_sk = rfcomm_pi(sk)->dlc->session->sock->sk; |
810 | conn = l2cap_pi(l2cap_sk)->chan->conn; | |
811 | ||
8d03e971 | 812 | memset(&cinfo, 0, sizeof(cinfo)); |
8c1d787b GP |
813 | cinfo.hci_handle = conn->hcon->handle; |
814 | memcpy(cinfo.dev_class, conn->hcon->dev_class, 3); | |
1da177e4 LT |
815 | |
816 | len = min_t(unsigned int, len, sizeof(cinfo)); | |
817 | if (copy_to_user(optval, (char *) &cinfo, len)) | |
818 | err = -EFAULT; | |
819 | ||
820 | break; | |
821 | ||
822 | default: | |
823 | err = -ENOPROTOOPT; | |
824 | break; | |
825 | } | |
826 | ||
827 | release_sock(sk); | |
d58daf42 MH |
828 | return err; |
829 | } | |
830 | ||
831 | static int rfcomm_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen) | |
832 | { | |
833 | struct sock *sk = sock->sk; | |
9f2c8a03 | 834 | struct bt_security sec; |
d58daf42 MH |
835 | int len, err = 0; |
836 | ||
837 | BT_DBG("sk %p", sk); | |
838 | ||
839 | if (level == SOL_RFCOMM) | |
840 | return rfcomm_sock_getsockopt_old(sock, optname, optval, optlen); | |
841 | ||
0588d94f MH |
842 | if (level != SOL_BLUETOOTH) |
843 | return -ENOPROTOOPT; | |
844 | ||
d58daf42 MH |
845 | if (get_user(len, optlen)) |
846 | return -EFAULT; | |
847 | ||
848 | lock_sock(sk); | |
849 | ||
850 | switch (optname) { | |
9f2c8a03 | 851 | case BT_SECURITY: |
0588d94f MH |
852 | if (sk->sk_type != SOCK_STREAM) { |
853 | err = -EINVAL; | |
854 | break; | |
855 | } | |
856 | ||
9f2c8a03 | 857 | sec.level = rfcomm_pi(sk)->sec_level; |
9ad2de43 | 858 | sec.key_size = 0; |
9f2c8a03 MH |
859 | |
860 | len = min_t(unsigned int, len, sizeof(sec)); | |
861 | if (copy_to_user(optval, (char *) &sec, len)) | |
862 | err = -EFAULT; | |
863 | ||
864 | break; | |
865 | ||
bb23c0ab MH |
866 | case BT_DEFER_SETUP: |
867 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
868 | err = -EINVAL; | |
869 | break; | |
870 | } | |
871 | ||
c5daa683 GP |
872 | if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags), |
873 | (u32 __user *) optval)) | |
bb23c0ab MH |
874 | err = -EFAULT; |
875 | ||
876 | break; | |
877 | ||
d58daf42 MH |
878 | default: |
879 | err = -ENOPROTOOPT; | |
880 | break; | |
881 | } | |
882 | ||
883 | release_sock(sk); | |
1da177e4 LT |
884 | return err; |
885 | } | |
886 | ||
887 | static int rfcomm_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
888 | { | |
e19caae7 | 889 | struct sock *sk __maybe_unused = sock->sk; |
1da177e4 LT |
890 | int err; |
891 | ||
e19caae7 | 892 | BT_DBG("sk %p cmd %x arg %lx", sk, cmd, arg); |
1da177e4 | 893 | |
3241ad82 | 894 | err = bt_sock_ioctl(sock, cmd, arg); |
1da177e4 | 895 | |
3241ad82 | 896 | if (err == -ENOIOCTLCMD) { |
1da177e4 | 897 | #ifdef CONFIG_BT_RFCOMM_TTY |
3241ad82 MH |
898 | lock_sock(sk); |
899 | err = rfcomm_dev_ioctl(sk, cmd, (void __user *) arg); | |
900 | release_sock(sk); | |
1da177e4 | 901 | #else |
3241ad82 | 902 | err = -EOPNOTSUPP; |
1da177e4 | 903 | #endif |
3241ad82 | 904 | } |
1da177e4 | 905 | |
1da177e4 LT |
906 | return err; |
907 | } | |
908 | ||
909 | static int rfcomm_sock_shutdown(struct socket *sock, int how) | |
910 | { | |
911 | struct sock *sk = sock->sk; | |
912 | int err = 0; | |
913 | ||
914 | BT_DBG("sock %p, sk %p", sock, sk); | |
915 | ||
285b4e90 AE |
916 | if (!sk) |
917 | return 0; | |
1da177e4 LT |
918 | |
919 | lock_sock(sk); | |
920 | if (!sk->sk_shutdown) { | |
921 | sk->sk_shutdown = SHUTDOWN_MASK; | |
922 | __rfcomm_sock_close(sk); | |
923 | ||
093facf3 VD |
924 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime && |
925 | !(current->flags & PF_EXITING)) | |
1da177e4 LT |
926 | err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime); |
927 | } | |
928 | release_sock(sk); | |
929 | return err; | |
930 | } | |
931 | ||
932 | static int rfcomm_sock_release(struct socket *sock) | |
933 | { | |
934 | struct sock *sk = sock->sk; | |
935 | int err; | |
936 | ||
937 | BT_DBG("sock %p, sk %p", sock, sk); | |
938 | ||
939 | if (!sk) | |
940 | return 0; | |
941 | ||
942 | err = rfcomm_sock_shutdown(sock, 2); | |
943 | ||
944 | sock_orphan(sk); | |
945 | rfcomm_sock_kill(sk); | |
946 | return err; | |
947 | } | |
948 | ||
8e87d142 | 949 | /* ---- RFCOMM core layer callbacks ---- |
1da177e4 LT |
950 | * |
951 | * called under rfcomm_lock() | |
952 | */ | |
953 | int rfcomm_connect_ind(struct rfcomm_session *s, u8 channel, struct rfcomm_dlc **d) | |
954 | { | |
955 | struct sock *sk, *parent; | |
956 | bdaddr_t src, dst; | |
957 | int result = 0; | |
958 | ||
959 | BT_DBG("session %p channel %d", s, channel); | |
960 | ||
961 | rfcomm_session_getaddr(s, &src, &dst); | |
962 | ||
963 | /* Check if we have socket listening on channel */ | |
964 | parent = rfcomm_get_sock_by_channel(BT_LISTEN, channel, &src); | |
965 | if (!parent) | |
966 | return 0; | |
967 | ||
eeb36656 GP |
968 | bh_lock_sock(parent); |
969 | ||
1da177e4 LT |
970 | /* Check for backlog size */ |
971 | if (sk_acceptq_is_full(parent)) { | |
8e87d142 | 972 | BT_DBG("backlog full %d", parent->sk_ack_backlog); |
1da177e4 LT |
973 | goto done; |
974 | } | |
975 | ||
11aa9c28 | 976 | sk = rfcomm_sock_alloc(sock_net(parent), NULL, BTPROTO_RFCOMM, GFP_ATOMIC, 0); |
1da177e4 LT |
977 | if (!sk) |
978 | goto done; | |
979 | ||
b5a30dda OP |
980 | bt_sock_reclassify_lock(sk, BTPROTO_RFCOMM); |
981 | ||
1da177e4 | 982 | rfcomm_sock_init(sk, parent); |
94a86df0 MH |
983 | bacpy(&rfcomm_pi(sk)->src, &src); |
984 | bacpy(&rfcomm_pi(sk)->dst, &dst); | |
1da177e4 LT |
985 | rfcomm_pi(sk)->channel = channel; |
986 | ||
987 | sk->sk_state = BT_CONFIG; | |
988 | bt_accept_enqueue(parent, sk); | |
989 | ||
990 | /* Accept connection and return socket DLC */ | |
991 | *d = rfcomm_pi(sk)->dlc; | |
992 | result = 1; | |
993 | ||
994 | done: | |
995 | bh_unlock_sock(parent); | |
bb23c0ab | 996 | |
c5daa683 | 997 | if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags)) |
bb23c0ab MH |
998 | parent->sk_state_change(parent); |
999 | ||
1da177e4 LT |
1000 | return result; |
1001 | } | |
1002 | ||
aef7d97c | 1003 | static int rfcomm_sock_debugfs_show(struct seq_file *f, void *p) |
1da177e4 LT |
1004 | { |
1005 | struct sock *sk; | |
1da177e4 | 1006 | |
95ca83f4 | 1007 | read_lock(&rfcomm_sk_list.lock); |
1da177e4 | 1008 | |
b67bfe0d | 1009 | sk_for_each(sk, &rfcomm_sk_list.head) { |
fcb73338 | 1010 | seq_printf(f, "%pMR %pMR %d %d\n", |
94a86df0 | 1011 | &rfcomm_pi(sk)->src, &rfcomm_pi(sk)->dst, |
fcb73338 | 1012 | sk->sk_state, rfcomm_pi(sk)->channel); |
be9d1227 | 1013 | } |
1da177e4 | 1014 | |
95ca83f4 | 1015 | read_unlock(&rfcomm_sk_list.lock); |
1da177e4 | 1016 | |
aef7d97c | 1017 | return 0; |
1da177e4 LT |
1018 | } |
1019 | ||
aef7d97c MH |
1020 | static int rfcomm_sock_debugfs_open(struct inode *inode, struct file *file) |
1021 | { | |
1022 | return single_open(file, rfcomm_sock_debugfs_show, inode->i_private); | |
1023 | } | |
1024 | ||
1025 | static const struct file_operations rfcomm_sock_debugfs_fops = { | |
1026 | .open = rfcomm_sock_debugfs_open, | |
1027 | .read = seq_read, | |
1028 | .llseek = seq_lseek, | |
1029 | .release = single_release, | |
1030 | }; | |
1031 | ||
1032 | static struct dentry *rfcomm_sock_debugfs; | |
1da177e4 | 1033 | |
90ddc4f0 | 1034 | static const struct proto_ops rfcomm_sock_ops = { |
1da177e4 LT |
1035 | .family = PF_BLUETOOTH, |
1036 | .owner = THIS_MODULE, | |
1037 | .release = rfcomm_sock_release, | |
1038 | .bind = rfcomm_sock_bind, | |
1039 | .connect = rfcomm_sock_connect, | |
1040 | .listen = rfcomm_sock_listen, | |
1041 | .accept = rfcomm_sock_accept, | |
1042 | .getname = rfcomm_sock_getname, | |
1043 | .sendmsg = rfcomm_sock_sendmsg, | |
1044 | .recvmsg = rfcomm_sock_recvmsg, | |
1045 | .shutdown = rfcomm_sock_shutdown, | |
1046 | .setsockopt = rfcomm_sock_setsockopt, | |
1047 | .getsockopt = rfcomm_sock_getsockopt, | |
1048 | .ioctl = rfcomm_sock_ioctl, | |
1049 | .poll = bt_sock_poll, | |
1050 | .socketpair = sock_no_socketpair, | |
1051 | .mmap = sock_no_mmap | |
1052 | }; | |
1053 | ||
ec1b4cf7 | 1054 | static const struct net_proto_family rfcomm_sock_family_ops = { |
1da177e4 LT |
1055 | .family = PF_BLUETOOTH, |
1056 | .owner = THIS_MODULE, | |
1057 | .create = rfcomm_sock_create | |
1058 | }; | |
1059 | ||
be9d1227 | 1060 | int __init rfcomm_init_sockets(void) |
1da177e4 LT |
1061 | { |
1062 | int err; | |
1063 | ||
74b3fb8d MH |
1064 | BUILD_BUG_ON(sizeof(struct sockaddr_rc) > sizeof(struct sockaddr)); |
1065 | ||
1da177e4 LT |
1066 | err = proto_register(&rfcomm_proto, 0); |
1067 | if (err < 0) | |
1068 | return err; | |
1069 | ||
1070 | err = bt_sock_register(BTPROTO_RFCOMM, &rfcomm_sock_family_ops); | |
c6f5df16 MY |
1071 | if (err < 0) { |
1072 | BT_ERR("RFCOMM socket layer registration failed"); | |
1073 | goto error; | |
1074 | } | |
1075 | ||
b0316615 | 1076 | err = bt_procfs_init(&init_net, "rfcomm", &rfcomm_sk_list, NULL); |
c6f5df16 MY |
1077 | if (err < 0) { |
1078 | BT_ERR("Failed to create RFCOMM proc file"); | |
1079 | bt_sock_unregister(BTPROTO_RFCOMM); | |
1da177e4 | 1080 | goto error; |
c6f5df16 | 1081 | } |
1da177e4 | 1082 | |
1da177e4 LT |
1083 | BT_INFO("RFCOMM socket layer initialized"); |
1084 | ||
1120e4bf MH |
1085 | if (IS_ERR_OR_NULL(bt_debugfs)) |
1086 | return 0; | |
1087 | ||
1088 | rfcomm_sock_debugfs = debugfs_create_file("rfcomm", 0444, | |
1089 | bt_debugfs, NULL, | |
1090 | &rfcomm_sock_debugfs_fops); | |
1091 | ||
1da177e4 LT |
1092 | return 0; |
1093 | ||
1094 | error: | |
1da177e4 LT |
1095 | proto_unregister(&rfcomm_proto); |
1096 | return err; | |
1097 | } | |
1098 | ||
2f8362af | 1099 | void __exit rfcomm_cleanup_sockets(void) |
1da177e4 | 1100 | { |
c6f5df16 MY |
1101 | bt_procfs_cleanup(&init_net, "rfcomm"); |
1102 | ||
aef7d97c | 1103 | debugfs_remove(rfcomm_sock_debugfs); |
1da177e4 | 1104 | |
5e9d7f86 | 1105 | bt_sock_unregister(BTPROTO_RFCOMM); |
1da177e4 LT |
1106 | |
1107 | proto_unregister(&rfcomm_proto); | |
1108 | } |