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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> |
174cd4b1 | 30 | #include <linux/sched/signal.h> |
1da177e4 LT |
31 | |
32 | #include <net/bluetooth/bluetooth.h> | |
33 | #include <net/bluetooth/hci_core.h> | |
34 | #include <net/bluetooth/l2cap.h> | |
35 | #include <net/bluetooth/rfcomm.h> | |
36 | ||
90ddc4f0 | 37 | static const struct proto_ops rfcomm_sock_ops; |
1da177e4 LT |
38 | |
39 | static struct bt_sock_list rfcomm_sk_list = { | |
d5fb2962 | 40 | .lock = __RW_LOCK_UNLOCKED(rfcomm_sk_list.lock) |
1da177e4 LT |
41 | }; |
42 | ||
43 | static void rfcomm_sock_close(struct sock *sk); | |
44 | static void rfcomm_sock_kill(struct sock *sk); | |
45 | ||
46 | /* ---- DLC callbacks ---- | |
47 | * | |
48 | * called under rfcomm_dlc_lock() | |
49 | */ | |
50 | static void rfcomm_sk_data_ready(struct rfcomm_dlc *d, struct sk_buff *skb) | |
51 | { | |
52 | struct sock *sk = d->owner; | |
53 | if (!sk) | |
54 | return; | |
55 | ||
56 | atomic_add(skb->len, &sk->sk_rmem_alloc); | |
57 | skb_queue_tail(&sk->sk_receive_queue, skb); | |
676d2369 | 58 | sk->sk_data_ready(sk); |
1da177e4 LT |
59 | |
60 | if (atomic_read(&sk->sk_rmem_alloc) >= sk->sk_rcvbuf) | |
61 | rfcomm_dlc_throttle(d); | |
62 | } | |
63 | ||
64 | static void rfcomm_sk_state_change(struct rfcomm_dlc *d, int err) | |
65 | { | |
66 | struct sock *sk = d->owner, *parent; | |
fad003b6 GP |
67 | unsigned long flags; |
68 | ||
1da177e4 LT |
69 | if (!sk) |
70 | return; | |
71 | ||
72 | BT_DBG("dlc %p state %ld err %d", d, d->state, err); | |
73 | ||
fad003b6 | 74 | local_irq_save(flags); |
1da177e4 LT |
75 | bh_lock_sock(sk); |
76 | ||
77 | if (err) | |
78 | sk->sk_err = err; | |
79 | ||
80 | sk->sk_state = d->state; | |
81 | ||
82 | parent = bt_sk(sk)->parent; | |
83 | if (parent) { | |
84 | if (d->state == BT_CLOSED) { | |
85 | sock_set_flag(sk, SOCK_ZAPPED); | |
86 | bt_accept_unlink(sk); | |
87 | } | |
676d2369 | 88 | parent->sk_data_ready(parent); |
1da177e4 LT |
89 | } else { |
90 | if (d->state == BT_CONNECTED) | |
94a86df0 MH |
91 | rfcomm_session_getaddr(d->session, |
92 | &rfcomm_pi(sk)->src, NULL); | |
1da177e4 LT |
93 | sk->sk_state_change(sk); |
94 | } | |
95 | ||
96 | bh_unlock_sock(sk); | |
fad003b6 | 97 | local_irq_restore(flags); |
1da177e4 LT |
98 | |
99 | if (parent && sock_flag(sk, SOCK_ZAPPED)) { | |
100 | /* We have to drop DLC lock here, otherwise | |
101 | * rfcomm_sock_destruct() will dead lock. */ | |
102 | rfcomm_dlc_unlock(d); | |
103 | rfcomm_sock_kill(sk); | |
104 | rfcomm_dlc_lock(d); | |
105 | } | |
106 | } | |
107 | ||
108 | /* ---- Socket functions ---- */ | |
b1765e7a | 109 | static struct sock *__rfcomm_get_listen_sock_by_addr(u8 channel, bdaddr_t *src) |
1da177e4 LT |
110 | { |
111 | struct sock *sk = NULL; | |
1da177e4 | 112 | |
b67bfe0d | 113 | sk_for_each(sk, &rfcomm_sk_list.head) { |
b1765e7a AK |
114 | if (rfcomm_pi(sk)->channel != channel) |
115 | continue; | |
116 | ||
117 | if (bacmp(&rfcomm_pi(sk)->src, src)) | |
118 | continue; | |
119 | ||
120 | if (sk->sk_state == BT_BOUND || sk->sk_state == BT_LISTEN) | |
1da177e4 LT |
121 | break; |
122 | } | |
123 | ||
b67bfe0d | 124 | return sk ? sk : NULL; |
1da177e4 LT |
125 | } |
126 | ||
127 | /* Find socket with channel and source bdaddr. | |
128 | * Returns closest match. | |
129 | */ | |
eeb36656 | 130 | static struct sock *rfcomm_get_sock_by_channel(int state, u8 channel, bdaddr_t *src) |
1da177e4 LT |
131 | { |
132 | struct sock *sk = NULL, *sk1 = NULL; | |
1da177e4 | 133 | |
eeb36656 GP |
134 | read_lock(&rfcomm_sk_list.lock); |
135 | ||
b67bfe0d | 136 | sk_for_each(sk, &rfcomm_sk_list.head) { |
1da177e4 LT |
137 | if (state && sk->sk_state != state) |
138 | continue; | |
139 | ||
140 | if (rfcomm_pi(sk)->channel == channel) { | |
141 | /* Exact match. */ | |
94a86df0 | 142 | if (!bacmp(&rfcomm_pi(sk)->src, src)) |
1da177e4 LT |
143 | break; |
144 | ||
145 | /* Closest match */ | |
94a86df0 | 146 | if (!bacmp(&rfcomm_pi(sk)->src, BDADDR_ANY)) |
1da177e4 LT |
147 | sk1 = sk; |
148 | } | |
149 | } | |
1da177e4 | 150 | |
1da177e4 | 151 | read_unlock(&rfcomm_sk_list.lock); |
eeb36656 | 152 | |
b67bfe0d | 153 | return sk ? sk : sk1; |
1da177e4 LT |
154 | } |
155 | ||
156 | static void rfcomm_sock_destruct(struct sock *sk) | |
157 | { | |
158 | struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc; | |
159 | ||
160 | BT_DBG("sk %p dlc %p", sk, d); | |
161 | ||
162 | skb_queue_purge(&sk->sk_receive_queue); | |
163 | skb_queue_purge(&sk->sk_write_queue); | |
164 | ||
165 | rfcomm_dlc_lock(d); | |
166 | rfcomm_pi(sk)->dlc = NULL; | |
167 | ||
168 | /* Detach DLC if it's owned by this socket */ | |
169 | if (d->owner == sk) | |
170 | d->owner = NULL; | |
171 | rfcomm_dlc_unlock(d); | |
172 | ||
173 | rfcomm_dlc_put(d); | |
174 | } | |
175 | ||
176 | static void rfcomm_sock_cleanup_listen(struct sock *parent) | |
177 | { | |
178 | struct sock *sk; | |
179 | ||
180 | BT_DBG("parent %p", parent); | |
181 | ||
182 | /* Close not yet accepted dlcs */ | |
183 | while ((sk = bt_accept_dequeue(parent, NULL))) { | |
184 | rfcomm_sock_close(sk); | |
185 | rfcomm_sock_kill(sk); | |
186 | } | |
187 | ||
188 | parent->sk_state = BT_CLOSED; | |
189 | sock_set_flag(parent, SOCK_ZAPPED); | |
190 | } | |
191 | ||
192 | /* Kill socket (only if zapped and orphan) | |
193 | * Must be called on unlocked socket. | |
194 | */ | |
195 | static void rfcomm_sock_kill(struct sock *sk) | |
196 | { | |
197 | if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket) | |
198 | return; | |
199 | ||
200 | BT_DBG("sk %p state %d refcnt %d", sk, sk->sk_state, atomic_read(&sk->sk_refcnt)); | |
201 | ||
202 | /* Kill poor orphan */ | |
203 | bt_sock_unlink(&rfcomm_sk_list, sk); | |
204 | sock_set_flag(sk, SOCK_DEAD); | |
205 | sock_put(sk); | |
206 | } | |
207 | ||
208 | static void __rfcomm_sock_close(struct sock *sk) | |
209 | { | |
210 | struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc; | |
211 | ||
212 | BT_DBG("sk %p state %d socket %p", sk, sk->sk_state, sk->sk_socket); | |
213 | ||
214 | switch (sk->sk_state) { | |
215 | case BT_LISTEN: | |
216 | rfcomm_sock_cleanup_listen(sk); | |
217 | break; | |
218 | ||
219 | case BT_CONNECT: | |
220 | case BT_CONNECT2: | |
221 | case BT_CONFIG: | |
222 | case BT_CONNECTED: | |
223 | rfcomm_dlc_close(d, 0); | |
224 | ||
225 | default: | |
226 | sock_set_flag(sk, SOCK_ZAPPED); | |
227 | break; | |
228 | } | |
229 | } | |
230 | ||
231 | /* Close socket. | |
232 | * Must be called on unlocked socket. | |
233 | */ | |
234 | static void rfcomm_sock_close(struct sock *sk) | |
235 | { | |
236 | lock_sock(sk); | |
237 | __rfcomm_sock_close(sk); | |
238 | release_sock(sk); | |
239 | } | |
240 | ||
241 | static void rfcomm_sock_init(struct sock *sk, struct sock *parent) | |
242 | { | |
243 | struct rfcomm_pinfo *pi = rfcomm_pi(sk); | |
244 | ||
245 | BT_DBG("sk %p", sk); | |
246 | ||
247 | if (parent) { | |
248 | sk->sk_type = parent->sk_type; | |
c5daa683 GP |
249 | pi->dlc->defer_setup = test_bit(BT_SK_DEFER_SETUP, |
250 | &bt_sk(parent)->flags); | |
9f2c8a03 MH |
251 | |
252 | pi->sec_level = rfcomm_pi(parent)->sec_level; | |
253 | pi->role_switch = rfcomm_pi(parent)->role_switch; | |
6230c9b4 PM |
254 | |
255 | security_sk_clone(parent, sk); | |
1da177e4 | 256 | } else { |
bb23c0ab | 257 | pi->dlc->defer_setup = 0; |
9f2c8a03 MH |
258 | |
259 | pi->sec_level = BT_SECURITY_LOW; | |
260 | pi->role_switch = 0; | |
1da177e4 LT |
261 | } |
262 | ||
9f2c8a03 MH |
263 | pi->dlc->sec_level = pi->sec_level; |
264 | pi->dlc->role_switch = pi->role_switch; | |
1da177e4 LT |
265 | } |
266 | ||
267 | static struct proto rfcomm_proto = { | |
268 | .name = "RFCOMM", | |
269 | .owner = THIS_MODULE, | |
270 | .obj_size = sizeof(struct rfcomm_pinfo) | |
271 | }; | |
272 | ||
11aa9c28 | 273 | static struct sock *rfcomm_sock_alloc(struct net *net, struct socket *sock, int proto, gfp_t prio, int kern) |
1da177e4 LT |
274 | { |
275 | struct rfcomm_dlc *d; | |
276 | struct sock *sk; | |
277 | ||
11aa9c28 | 278 | sk = sk_alloc(net, PF_BLUETOOTH, prio, &rfcomm_proto, kern); |
1da177e4 LT |
279 | if (!sk) |
280 | return NULL; | |
281 | ||
282 | sock_init_data(sock, sk); | |
283 | INIT_LIST_HEAD(&bt_sk(sk)->accept_q); | |
284 | ||
285 | d = rfcomm_dlc_alloc(prio); | |
286 | if (!d) { | |
287 | sk_free(sk); | |
288 | return NULL; | |
289 | } | |
290 | ||
291 | d->data_ready = rfcomm_sk_data_ready; | |
292 | d->state_change = rfcomm_sk_state_change; | |
293 | ||
294 | rfcomm_pi(sk)->dlc = d; | |
295 | d->owner = sk; | |
296 | ||
297 | sk->sk_destruct = rfcomm_sock_destruct; | |
298 | sk->sk_sndtimeo = RFCOMM_CONN_TIMEOUT; | |
299 | ||
77db1980 MH |
300 | sk->sk_sndbuf = RFCOMM_MAX_CREDITS * RFCOMM_DEFAULT_MTU * 10; |
301 | sk->sk_rcvbuf = RFCOMM_MAX_CREDITS * RFCOMM_DEFAULT_MTU * 10; | |
1da177e4 LT |
302 | |
303 | sock_reset_flag(sk, SOCK_ZAPPED); | |
304 | ||
305 | sk->sk_protocol = proto; | |
77db1980 | 306 | sk->sk_state = BT_OPEN; |
1da177e4 LT |
307 | |
308 | bt_sock_link(&rfcomm_sk_list, sk); | |
309 | ||
310 | BT_DBG("sk %p", sk); | |
311 | return sk; | |
312 | } | |
313 | ||
3f378b68 EP |
314 | static int rfcomm_sock_create(struct net *net, struct socket *sock, |
315 | int protocol, int kern) | |
1da177e4 LT |
316 | { |
317 | struct sock *sk; | |
318 | ||
319 | BT_DBG("sock %p", sock); | |
320 | ||
321 | sock->state = SS_UNCONNECTED; | |
322 | ||
323 | if (sock->type != SOCK_STREAM && sock->type != SOCK_RAW) | |
324 | return -ESOCKTNOSUPPORT; | |
325 | ||
326 | sock->ops = &rfcomm_sock_ops; | |
327 | ||
11aa9c28 | 328 | sk = rfcomm_sock_alloc(net, sock, protocol, GFP_ATOMIC, kern); |
74da626a | 329 | if (!sk) |
1da177e4 LT |
330 | return -ENOMEM; |
331 | ||
332 | rfcomm_sock_init(sk, NULL); | |
333 | return 0; | |
334 | } | |
335 | ||
336 | static int rfcomm_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len) | |
337 | { | |
951b6a07 | 338 | struct sockaddr_rc sa; |
1da177e4 | 339 | struct sock *sk = sock->sk; |
951b6a07 | 340 | int len, err = 0; |
1da177e4 LT |
341 | |
342 | if (!addr || addr->sa_family != AF_BLUETOOTH) | |
343 | return -EINVAL; | |
344 | ||
951b6a07 JK |
345 | memset(&sa, 0, sizeof(sa)); |
346 | len = min_t(unsigned int, sizeof(sa), addr_len); | |
347 | memcpy(&sa, addr, len); | |
348 | ||
349 | BT_DBG("sk %p %pMR", sk, &sa.rc_bdaddr); | |
350 | ||
1da177e4 LT |
351 | lock_sock(sk); |
352 | ||
353 | if (sk->sk_state != BT_OPEN) { | |
354 | err = -EBADFD; | |
355 | goto done; | |
356 | } | |
357 | ||
354d28d5 MH |
358 | if (sk->sk_type != SOCK_STREAM) { |
359 | err = -EINVAL; | |
360 | goto done; | |
361 | } | |
362 | ||
95ca83f4 | 363 | write_lock(&rfcomm_sk_list.lock); |
1da177e4 | 364 | |
951b6a07 JK |
365 | if (sa.rc_channel && |
366 | __rfcomm_get_listen_sock_by_addr(sa.rc_channel, &sa.rc_bdaddr)) { | |
1da177e4 LT |
367 | err = -EADDRINUSE; |
368 | } else { | |
369 | /* Save source address */ | |
951b6a07 JK |
370 | bacpy(&rfcomm_pi(sk)->src, &sa.rc_bdaddr); |
371 | rfcomm_pi(sk)->channel = sa.rc_channel; | |
1da177e4 LT |
372 | sk->sk_state = BT_BOUND; |
373 | } | |
374 | ||
95ca83f4 | 375 | write_unlock(&rfcomm_sk_list.lock); |
1da177e4 LT |
376 | |
377 | done: | |
378 | release_sock(sk); | |
379 | return err; | |
380 | } | |
381 | ||
382 | static int rfcomm_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags) | |
383 | { | |
384 | struct sockaddr_rc *sa = (struct sockaddr_rc *) addr; | |
385 | struct sock *sk = sock->sk; | |
386 | struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc; | |
387 | int err = 0; | |
388 | ||
389 | BT_DBG("sk %p", sk); | |
390 | ||
6503d961 CG |
391 | if (alen < sizeof(struct sockaddr_rc) || |
392 | addr->sa_family != AF_BLUETOOTH) | |
1da177e4 LT |
393 | return -EINVAL; |
394 | ||
354d28d5 | 395 | lock_sock(sk); |
1da177e4 | 396 | |
354d28d5 MH |
397 | if (sk->sk_state != BT_OPEN && sk->sk_state != BT_BOUND) { |
398 | err = -EBADFD; | |
399 | goto done; | |
400 | } | |
1da177e4 | 401 | |
354d28d5 MH |
402 | if (sk->sk_type != SOCK_STREAM) { |
403 | err = -EINVAL; | |
404 | goto done; | |
405 | } | |
1da177e4 LT |
406 | |
407 | sk->sk_state = BT_CONNECT; | |
94a86df0 | 408 | bacpy(&rfcomm_pi(sk)->dst, &sa->rc_bdaddr); |
1da177e4 LT |
409 | rfcomm_pi(sk)->channel = sa->rc_channel; |
410 | ||
9f2c8a03 MH |
411 | d->sec_level = rfcomm_pi(sk)->sec_level; |
412 | d->role_switch = rfcomm_pi(sk)->role_switch; | |
77db1980 | 413 | |
94a86df0 MH |
414 | err = rfcomm_dlc_open(d, &rfcomm_pi(sk)->src, &sa->rc_bdaddr, |
415 | sa->rc_channel); | |
1da177e4 LT |
416 | if (!err) |
417 | err = bt_sock_wait_state(sk, BT_CONNECTED, | |
418 | sock_sndtimeo(sk, flags & O_NONBLOCK)); | |
419 | ||
354d28d5 | 420 | done: |
1da177e4 LT |
421 | release_sock(sk); |
422 | return err; | |
423 | } | |
424 | ||
425 | static int rfcomm_sock_listen(struct socket *sock, int backlog) | |
426 | { | |
427 | struct sock *sk = sock->sk; | |
428 | int err = 0; | |
429 | ||
430 | BT_DBG("sk %p backlog %d", sk, backlog); | |
431 | ||
432 | lock_sock(sk); | |
433 | ||
434 | if (sk->sk_state != BT_BOUND) { | |
435 | err = -EBADFD; | |
436 | goto done; | |
437 | } | |
438 | ||
354d28d5 MH |
439 | if (sk->sk_type != SOCK_STREAM) { |
440 | err = -EINVAL; | |
441 | goto done; | |
442 | } | |
443 | ||
1da177e4 | 444 | if (!rfcomm_pi(sk)->channel) { |
94a86df0 | 445 | bdaddr_t *src = &rfcomm_pi(sk)->src; |
1da177e4 LT |
446 | u8 channel; |
447 | ||
448 | err = -EINVAL; | |
449 | ||
95ca83f4 | 450 | write_lock(&rfcomm_sk_list.lock); |
1da177e4 LT |
451 | |
452 | for (channel = 1; channel < 31; channel++) | |
b1765e7a | 453 | if (!__rfcomm_get_listen_sock_by_addr(channel, src)) { |
1da177e4 LT |
454 | rfcomm_pi(sk)->channel = channel; |
455 | err = 0; | |
456 | break; | |
457 | } | |
458 | ||
95ca83f4 | 459 | write_unlock(&rfcomm_sk_list.lock); |
1da177e4 LT |
460 | |
461 | if (err < 0) | |
462 | goto done; | |
463 | } | |
464 | ||
465 | sk->sk_max_ack_backlog = backlog; | |
466 | sk->sk_ack_backlog = 0; | |
467 | sk->sk_state = BT_LISTEN; | |
468 | ||
469 | done: | |
470 | release_sock(sk); | |
471 | return err; | |
472 | } | |
473 | ||
474 | static int rfcomm_sock_accept(struct socket *sock, struct socket *newsock, int flags) | |
475 | { | |
dfb2fae7 | 476 | DEFINE_WAIT_FUNC(wait, woken_wake_function); |
1da177e4 LT |
477 | struct sock *sk = sock->sk, *nsk; |
478 | long timeo; | |
479 | int err = 0; | |
480 | ||
dc2a0e20 | 481 | lock_sock_nested(sk, SINGLE_DEPTH_NESTING); |
1da177e4 | 482 | |
354d28d5 MH |
483 | if (sk->sk_type != SOCK_STREAM) { |
484 | err = -EINVAL; | |
485 | goto done; | |
486 | } | |
487 | ||
1da177e4 LT |
488 | timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK); |
489 | ||
490 | BT_DBG("sk %p timeo %ld", sk, timeo); | |
491 | ||
492 | /* Wait for an incoming connection. (wake-one). */ | |
aa395145 | 493 | add_wait_queue_exclusive(sk_sleep(sk), &wait); |
950e2d51 | 494 | while (1) { |
950e2d51 PH |
495 | if (sk->sk_state != BT_LISTEN) { |
496 | err = -EBADFD; | |
1da177e4 LT |
497 | break; |
498 | } | |
499 | ||
950e2d51 PH |
500 | nsk = bt_accept_dequeue(sk, newsock); |
501 | if (nsk) | |
502 | break; | |
1da177e4 | 503 | |
950e2d51 PH |
504 | if (!timeo) { |
505 | err = -EAGAIN; | |
1da177e4 LT |
506 | break; |
507 | } | |
508 | ||
509 | if (signal_pending(current)) { | |
510 | err = sock_intr_errno(timeo); | |
511 | break; | |
512 | } | |
950e2d51 PH |
513 | |
514 | release_sock(sk); | |
dfb2fae7 PH |
515 | |
516 | timeo = wait_woken(&wait, TASK_INTERRUPTIBLE, timeo); | |
517 | ||
dc2a0e20 | 518 | lock_sock_nested(sk, SINGLE_DEPTH_NESTING); |
1da177e4 | 519 | } |
aa395145 | 520 | remove_wait_queue(sk_sleep(sk), &wait); |
1da177e4 LT |
521 | |
522 | if (err) | |
523 | goto done; | |
524 | ||
525 | newsock->state = SS_CONNECTED; | |
526 | ||
527 | BT_DBG("new socket %p", nsk); | |
528 | ||
529 | done: | |
530 | release_sock(sk); | |
531 | return err; | |
532 | } | |
533 | ||
534 | static int rfcomm_sock_getname(struct socket *sock, struct sockaddr *addr, int *len, int peer) | |
535 | { | |
536 | struct sockaddr_rc *sa = (struct sockaddr_rc *) addr; | |
537 | struct sock *sk = sock->sk; | |
538 | ||
539 | BT_DBG("sock %p, sk %p", sock, sk); | |
540 | ||
e8b1ab9e JH |
541 | if (peer && sk->sk_state != BT_CONNECTED && |
542 | sk->sk_state != BT_CONNECT && sk->sk_state != BT_CONNECT2) | |
35364c99 JH |
543 | return -ENOTCONN; |
544 | ||
9344a972 | 545 | memset(sa, 0, sizeof(*sa)); |
1da177e4 LT |
546 | sa->rc_family = AF_BLUETOOTH; |
547 | sa->rc_channel = rfcomm_pi(sk)->channel; | |
548 | if (peer) | |
94a86df0 | 549 | bacpy(&sa->rc_bdaddr, &rfcomm_pi(sk)->dst); |
1da177e4 | 550 | else |
94a86df0 | 551 | bacpy(&sa->rc_bdaddr, &rfcomm_pi(sk)->src); |
1da177e4 LT |
552 | |
553 | *len = sizeof(struct sockaddr_rc); | |
554 | return 0; | |
555 | } | |
556 | ||
1b784140 YX |
557 | static int rfcomm_sock_sendmsg(struct socket *sock, struct msghdr *msg, |
558 | size_t len) | |
1da177e4 LT |
559 | { |
560 | struct sock *sk = sock->sk; | |
561 | struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc; | |
562 | struct sk_buff *skb; | |
e793dcf0 | 563 | int sent; |
1da177e4 | 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 | ||
e793dcf0 JH |
578 | sent = bt_sock_wait_ready(sk, msg->msg_flags); |
579 | if (sent) | |
580 | goto done; | |
581 | ||
1da177e4 LT |
582 | while (len) { |
583 | size_t size = min_t(size_t, len, d->mtu); | |
4d6a2188 | 584 | int err; |
8e87d142 | 585 | |
1da177e4 LT |
586 | skb = sock_alloc_send_skb(sk, size + RFCOMM_SKB_RESERVE, |
587 | msg->msg_flags & MSG_DONTWAIT, &err); | |
91aa35a5 VS |
588 | if (!skb) { |
589 | if (sent == 0) | |
590 | sent = err; | |
1da177e4 | 591 | break; |
91aa35a5 | 592 | } |
1da177e4 LT |
593 | skb_reserve(skb, RFCOMM_SKB_HEAD_RESERVE); |
594 | ||
6ce8e9ce | 595 | err = memcpy_from_msg(skb_put(skb, size), msg, size); |
1da177e4 LT |
596 | if (err) { |
597 | kfree_skb(skb); | |
4d6a2188 MH |
598 | if (sent == 0) |
599 | sent = err; | |
1da177e4 LT |
600 | break; |
601 | } | |
602 | ||
262038fc LAD |
603 | skb->priority = sk->sk_priority; |
604 | ||
1da177e4 LT |
605 | err = rfcomm_dlc_send(d, skb); |
606 | if (err < 0) { | |
607 | kfree_skb(skb); | |
4d6a2188 MH |
608 | if (sent == 0) |
609 | sent = err; | |
1da177e4 LT |
610 | break; |
611 | } | |
612 | ||
613 | sent += size; | |
614 | len -= size; | |
615 | } | |
616 | ||
e793dcf0 | 617 | done: |
1da177e4 LT |
618 | release_sock(sk); |
619 | ||
4d6a2188 | 620 | return sent; |
1da177e4 LT |
621 | } |
622 | ||
1b784140 YX |
623 | static int rfcomm_sock_recvmsg(struct socket *sock, struct msghdr *msg, |
624 | size_t size, int flags) | |
1da177e4 LT |
625 | { |
626 | struct sock *sk = sock->sk; | |
bb23c0ab | 627 | struct rfcomm_dlc *d = rfcomm_pi(sk)->dlc; |
3d7d01df | 628 | int len; |
1da177e4 | 629 | |
bb23c0ab MH |
630 | if (test_and_clear_bit(RFCOMM_DEFER_SETUP, &d->flags)) { |
631 | rfcomm_dlc_accept(d); | |
632 | return 0; | |
633 | } | |
634 | ||
1b784140 | 635 | len = bt_sock_stream_recvmsg(sock, msg, size, flags); |
1da177e4 LT |
636 | |
637 | lock_sock(sk); | |
3d7d01df MM |
638 | if (!(flags & MSG_PEEK) && len > 0) |
639 | atomic_sub(len, &sk->sk_rmem_alloc); | |
1da177e4 | 640 | |
1da177e4 LT |
641 | if (atomic_read(&sk->sk_rmem_alloc) <= (sk->sk_rcvbuf >> 2)) |
642 | rfcomm_dlc_unthrottle(rfcomm_pi(sk)->dlc); | |
1da177e4 | 643 | release_sock(sk); |
3d7d01df MM |
644 | |
645 | return len; | |
1da177e4 LT |
646 | } |
647 | ||
b7058842 | 648 | static int rfcomm_sock_setsockopt_old(struct socket *sock, int optname, char __user *optval, unsigned int optlen) |
1da177e4 LT |
649 | { |
650 | struct sock *sk = sock->sk; | |
651 | int err = 0; | |
652 | u32 opt; | |
653 | ||
654 | BT_DBG("sk %p", sk); | |
655 | ||
656 | lock_sock(sk); | |
657 | ||
658 | switch (optname) { | |
659 | case RFCOMM_LM: | |
660 | if (get_user(opt, (u32 __user *) optval)) { | |
661 | err = -EFAULT; | |
662 | break; | |
663 | } | |
664 | ||
2c068e0b MH |
665 | if (opt & RFCOMM_LM_FIPS) { |
666 | err = -EINVAL; | |
667 | break; | |
668 | } | |
669 | ||
9f2c8a03 MH |
670 | if (opt & RFCOMM_LM_AUTH) |
671 | rfcomm_pi(sk)->sec_level = BT_SECURITY_LOW; | |
672 | if (opt & RFCOMM_LM_ENCRYPT) | |
673 | rfcomm_pi(sk)->sec_level = BT_SECURITY_MEDIUM; | |
674 | if (opt & RFCOMM_LM_SECURE) | |
675 | rfcomm_pi(sk)->sec_level = BT_SECURITY_HIGH; | |
676 | ||
677 | rfcomm_pi(sk)->role_switch = (opt & RFCOMM_LM_MASTER); | |
1da177e4 LT |
678 | break; |
679 | ||
680 | default: | |
681 | err = -ENOPROTOOPT; | |
682 | break; | |
683 | } | |
684 | ||
685 | release_sock(sk); | |
686 | return err; | |
687 | } | |
688 | ||
b7058842 | 689 | static int rfcomm_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen) |
d58daf42 MH |
690 | { |
691 | struct sock *sk = sock->sk; | |
9f2c8a03 | 692 | struct bt_security sec; |
d0fad89d SB |
693 | int err = 0; |
694 | size_t len; | |
bb23c0ab | 695 | u32 opt; |
d58daf42 MH |
696 | |
697 | BT_DBG("sk %p", sk); | |
698 | ||
699 | if (level == SOL_RFCOMM) | |
700 | return rfcomm_sock_setsockopt_old(sock, optname, optval, optlen); | |
701 | ||
0588d94f MH |
702 | if (level != SOL_BLUETOOTH) |
703 | return -ENOPROTOOPT; | |
704 | ||
d58daf42 MH |
705 | lock_sock(sk); |
706 | ||
707 | switch (optname) { | |
9f2c8a03 | 708 | case BT_SECURITY: |
0588d94f MH |
709 | if (sk->sk_type != SOCK_STREAM) { |
710 | err = -EINVAL; | |
711 | break; | |
712 | } | |
713 | ||
9f2c8a03 MH |
714 | sec.level = BT_SECURITY_LOW; |
715 | ||
716 | len = min_t(unsigned int, sizeof(sec), optlen); | |
717 | if (copy_from_user((char *) &sec, optval, len)) { | |
718 | err = -EFAULT; | |
719 | break; | |
720 | } | |
721 | ||
722 | if (sec.level > BT_SECURITY_HIGH) { | |
723 | err = -EINVAL; | |
724 | break; | |
725 | } | |
726 | ||
727 | rfcomm_pi(sk)->sec_level = sec.level; | |
728 | break; | |
729 | ||
bb23c0ab MH |
730 | case BT_DEFER_SETUP: |
731 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
732 | err = -EINVAL; | |
733 | break; | |
734 | } | |
735 | ||
736 | if (get_user(opt, (u32 __user *) optval)) { | |
737 | err = -EFAULT; | |
738 | break; | |
739 | } | |
740 | ||
c5daa683 GP |
741 | if (opt) |
742 | set_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); | |
743 | else | |
744 | clear_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags); | |
745 | ||
bb23c0ab MH |
746 | break; |
747 | ||
d58daf42 MH |
748 | default: |
749 | err = -ENOPROTOOPT; | |
750 | break; | |
751 | } | |
752 | ||
753 | release_sock(sk); | |
754 | return err; | |
755 | } | |
756 | ||
757 | static int rfcomm_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen) | |
1da177e4 LT |
758 | { |
759 | struct sock *sk = sock->sk; | |
60c7a3c9 MH |
760 | struct sock *l2cap_sk; |
761 | struct l2cap_conn *conn; | |
1da177e4 LT |
762 | struct rfcomm_conninfo cinfo; |
763 | int len, err = 0; | |
9f2c8a03 | 764 | u32 opt; |
1da177e4 LT |
765 | |
766 | BT_DBG("sk %p", sk); | |
767 | ||
768 | if (get_user(len, optlen)) | |
769 | return -EFAULT; | |
770 | ||
771 | lock_sock(sk); | |
772 | ||
773 | switch (optname) { | |
774 | case RFCOMM_LM: | |
9f2c8a03 MH |
775 | switch (rfcomm_pi(sk)->sec_level) { |
776 | case BT_SECURITY_LOW: | |
777 | opt = RFCOMM_LM_AUTH; | |
778 | break; | |
779 | case BT_SECURITY_MEDIUM: | |
780 | opt = RFCOMM_LM_AUTH | RFCOMM_LM_ENCRYPT; | |
781 | break; | |
782 | case BT_SECURITY_HIGH: | |
783 | opt = RFCOMM_LM_AUTH | RFCOMM_LM_ENCRYPT | | |
2c068e0b MH |
784 | RFCOMM_LM_SECURE; |
785 | break; | |
786 | case BT_SECURITY_FIPS: | |
787 | opt = RFCOMM_LM_AUTH | RFCOMM_LM_ENCRYPT | | |
788 | RFCOMM_LM_SECURE | RFCOMM_LM_FIPS; | |
9f2c8a03 MH |
789 | break; |
790 | default: | |
791 | opt = 0; | |
792 | break; | |
793 | } | |
794 | ||
795 | if (rfcomm_pi(sk)->role_switch) | |
796 | opt |= RFCOMM_LM_MASTER; | |
797 | ||
798 | if (put_user(opt, (u32 __user *) optval)) | |
1da177e4 | 799 | err = -EFAULT; |
2c068e0b | 800 | |
1da177e4 LT |
801 | break; |
802 | ||
803 | case RFCOMM_CONNINFO: | |
bb23c0ab MH |
804 | if (sk->sk_state != BT_CONNECTED && |
805 | !rfcomm_pi(sk)->dlc->defer_setup) { | |
1da177e4 LT |
806 | err = -ENOTCONN; |
807 | break; | |
808 | } | |
809 | ||
60c7a3c9 MH |
810 | l2cap_sk = rfcomm_pi(sk)->dlc->session->sock->sk; |
811 | conn = l2cap_pi(l2cap_sk)->chan->conn; | |
812 | ||
8d03e971 | 813 | memset(&cinfo, 0, sizeof(cinfo)); |
8c1d787b GP |
814 | cinfo.hci_handle = conn->hcon->handle; |
815 | memcpy(cinfo.dev_class, conn->hcon->dev_class, 3); | |
1da177e4 LT |
816 | |
817 | len = min_t(unsigned int, len, sizeof(cinfo)); | |
818 | if (copy_to_user(optval, (char *) &cinfo, len)) | |
819 | err = -EFAULT; | |
820 | ||
821 | break; | |
822 | ||
823 | default: | |
824 | err = -ENOPROTOOPT; | |
825 | break; | |
826 | } | |
827 | ||
828 | release_sock(sk); | |
d58daf42 MH |
829 | return err; |
830 | } | |
831 | ||
832 | static int rfcomm_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen) | |
833 | { | |
834 | struct sock *sk = sock->sk; | |
9f2c8a03 | 835 | struct bt_security sec; |
d58daf42 MH |
836 | int len, err = 0; |
837 | ||
838 | BT_DBG("sk %p", sk); | |
839 | ||
840 | if (level == SOL_RFCOMM) | |
841 | return rfcomm_sock_getsockopt_old(sock, optname, optval, optlen); | |
842 | ||
0588d94f MH |
843 | if (level != SOL_BLUETOOTH) |
844 | return -ENOPROTOOPT; | |
845 | ||
d58daf42 MH |
846 | if (get_user(len, optlen)) |
847 | return -EFAULT; | |
848 | ||
849 | lock_sock(sk); | |
850 | ||
851 | switch (optname) { | |
9f2c8a03 | 852 | case BT_SECURITY: |
0588d94f MH |
853 | if (sk->sk_type != SOCK_STREAM) { |
854 | err = -EINVAL; | |
855 | break; | |
856 | } | |
857 | ||
9f2c8a03 | 858 | sec.level = rfcomm_pi(sk)->sec_level; |
9ad2de43 | 859 | sec.key_size = 0; |
9f2c8a03 MH |
860 | |
861 | len = min_t(unsigned int, len, sizeof(sec)); | |
862 | if (copy_to_user(optval, (char *) &sec, len)) | |
863 | err = -EFAULT; | |
864 | ||
865 | break; | |
866 | ||
bb23c0ab MH |
867 | case BT_DEFER_SETUP: |
868 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
869 | err = -EINVAL; | |
870 | break; | |
871 | } | |
872 | ||
c5daa683 GP |
873 | if (put_user(test_bit(BT_SK_DEFER_SETUP, &bt_sk(sk)->flags), |
874 | (u32 __user *) optval)) | |
bb23c0ab MH |
875 | err = -EFAULT; |
876 | ||
877 | break; | |
878 | ||
d58daf42 MH |
879 | default: |
880 | err = -ENOPROTOOPT; | |
881 | break; | |
882 | } | |
883 | ||
884 | release_sock(sk); | |
1da177e4 LT |
885 | return err; |
886 | } | |
887 | ||
888 | static int rfcomm_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
889 | { | |
e19caae7 | 890 | struct sock *sk __maybe_unused = sock->sk; |
1da177e4 LT |
891 | int err; |
892 | ||
e19caae7 | 893 | BT_DBG("sk %p cmd %x arg %lx", sk, cmd, arg); |
1da177e4 | 894 | |
3241ad82 | 895 | err = bt_sock_ioctl(sock, cmd, arg); |
1da177e4 | 896 | |
3241ad82 | 897 | if (err == -ENOIOCTLCMD) { |
1da177e4 | 898 | #ifdef CONFIG_BT_RFCOMM_TTY |
3241ad82 MH |
899 | lock_sock(sk); |
900 | err = rfcomm_dev_ioctl(sk, cmd, (void __user *) arg); | |
901 | release_sock(sk); | |
1da177e4 | 902 | #else |
3241ad82 | 903 | err = -EOPNOTSUPP; |
1da177e4 | 904 | #endif |
3241ad82 | 905 | } |
1da177e4 | 906 | |
1da177e4 LT |
907 | return err; |
908 | } | |
909 | ||
910 | static int rfcomm_sock_shutdown(struct socket *sock, int how) | |
911 | { | |
912 | struct sock *sk = sock->sk; | |
913 | int err = 0; | |
914 | ||
915 | BT_DBG("sock %p, sk %p", sock, sk); | |
916 | ||
285b4e90 AE |
917 | if (!sk) |
918 | return 0; | |
1da177e4 LT |
919 | |
920 | lock_sock(sk); | |
921 | if (!sk->sk_shutdown) { | |
922 | sk->sk_shutdown = SHUTDOWN_MASK; | |
923 | __rfcomm_sock_close(sk); | |
924 | ||
093facf3 VD |
925 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime && |
926 | !(current->flags & PF_EXITING)) | |
1da177e4 LT |
927 | err = bt_sock_wait_state(sk, BT_CLOSED, sk->sk_lingertime); |
928 | } | |
929 | release_sock(sk); | |
930 | return err; | |
931 | } | |
932 | ||
933 | static int rfcomm_sock_release(struct socket *sock) | |
934 | { | |
935 | struct sock *sk = sock->sk; | |
936 | int err; | |
937 | ||
938 | BT_DBG("sock %p, sk %p", sock, sk); | |
939 | ||
940 | if (!sk) | |
941 | return 0; | |
942 | ||
943 | err = rfcomm_sock_shutdown(sock, 2); | |
944 | ||
945 | sock_orphan(sk); | |
946 | rfcomm_sock_kill(sk); | |
947 | return err; | |
948 | } | |
949 | ||
8e87d142 | 950 | /* ---- RFCOMM core layer callbacks ---- |
1da177e4 LT |
951 | * |
952 | * called under rfcomm_lock() | |
953 | */ | |
954 | int rfcomm_connect_ind(struct rfcomm_session *s, u8 channel, struct rfcomm_dlc **d) | |
955 | { | |
956 | struct sock *sk, *parent; | |
957 | bdaddr_t src, dst; | |
958 | int result = 0; | |
959 | ||
960 | BT_DBG("session %p channel %d", s, channel); | |
961 | ||
962 | rfcomm_session_getaddr(s, &src, &dst); | |
963 | ||
964 | /* Check if we have socket listening on channel */ | |
965 | parent = rfcomm_get_sock_by_channel(BT_LISTEN, channel, &src); | |
966 | if (!parent) | |
967 | return 0; | |
968 | ||
eeb36656 GP |
969 | bh_lock_sock(parent); |
970 | ||
1da177e4 LT |
971 | /* Check for backlog size */ |
972 | if (sk_acceptq_is_full(parent)) { | |
8e87d142 | 973 | BT_DBG("backlog full %d", parent->sk_ack_backlog); |
1da177e4 LT |
974 | goto done; |
975 | } | |
976 | ||
11aa9c28 | 977 | sk = rfcomm_sock_alloc(sock_net(parent), NULL, BTPROTO_RFCOMM, GFP_ATOMIC, 0); |
1da177e4 LT |
978 | if (!sk) |
979 | goto done; | |
980 | ||
b5a30dda OP |
981 | bt_sock_reclassify_lock(sk, BTPROTO_RFCOMM); |
982 | ||
1da177e4 | 983 | rfcomm_sock_init(sk, parent); |
94a86df0 MH |
984 | bacpy(&rfcomm_pi(sk)->src, &src); |
985 | bacpy(&rfcomm_pi(sk)->dst, &dst); | |
1da177e4 LT |
986 | rfcomm_pi(sk)->channel = channel; |
987 | ||
988 | sk->sk_state = BT_CONFIG; | |
989 | bt_accept_enqueue(parent, sk); | |
990 | ||
991 | /* Accept connection and return socket DLC */ | |
992 | *d = rfcomm_pi(sk)->dlc; | |
993 | result = 1; | |
994 | ||
995 | done: | |
996 | bh_unlock_sock(parent); | |
bb23c0ab | 997 | |
c5daa683 | 998 | if (test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags)) |
bb23c0ab MH |
999 | parent->sk_state_change(parent); |
1000 | ||
1da177e4 LT |
1001 | return result; |
1002 | } | |
1003 | ||
aef7d97c | 1004 | static int rfcomm_sock_debugfs_show(struct seq_file *f, void *p) |
1da177e4 LT |
1005 | { |
1006 | struct sock *sk; | |
1da177e4 | 1007 | |
95ca83f4 | 1008 | read_lock(&rfcomm_sk_list.lock); |
1da177e4 | 1009 | |
b67bfe0d | 1010 | sk_for_each(sk, &rfcomm_sk_list.head) { |
fcb73338 | 1011 | seq_printf(f, "%pMR %pMR %d %d\n", |
94a86df0 | 1012 | &rfcomm_pi(sk)->src, &rfcomm_pi(sk)->dst, |
fcb73338 | 1013 | sk->sk_state, rfcomm_pi(sk)->channel); |
be9d1227 | 1014 | } |
1da177e4 | 1015 | |
95ca83f4 | 1016 | read_unlock(&rfcomm_sk_list.lock); |
1da177e4 | 1017 | |
aef7d97c | 1018 | return 0; |
1da177e4 LT |
1019 | } |
1020 | ||
aef7d97c MH |
1021 | static int rfcomm_sock_debugfs_open(struct inode *inode, struct file *file) |
1022 | { | |
1023 | return single_open(file, rfcomm_sock_debugfs_show, inode->i_private); | |
1024 | } | |
1025 | ||
1026 | static const struct file_operations rfcomm_sock_debugfs_fops = { | |
1027 | .open = rfcomm_sock_debugfs_open, | |
1028 | .read = seq_read, | |
1029 | .llseek = seq_lseek, | |
1030 | .release = single_release, | |
1031 | }; | |
1032 | ||
1033 | static struct dentry *rfcomm_sock_debugfs; | |
1da177e4 | 1034 | |
90ddc4f0 | 1035 | static const struct proto_ops rfcomm_sock_ops = { |
1da177e4 LT |
1036 | .family = PF_BLUETOOTH, |
1037 | .owner = THIS_MODULE, | |
1038 | .release = rfcomm_sock_release, | |
1039 | .bind = rfcomm_sock_bind, | |
1040 | .connect = rfcomm_sock_connect, | |
1041 | .listen = rfcomm_sock_listen, | |
1042 | .accept = rfcomm_sock_accept, | |
1043 | .getname = rfcomm_sock_getname, | |
1044 | .sendmsg = rfcomm_sock_sendmsg, | |
1045 | .recvmsg = rfcomm_sock_recvmsg, | |
1046 | .shutdown = rfcomm_sock_shutdown, | |
1047 | .setsockopt = rfcomm_sock_setsockopt, | |
1048 | .getsockopt = rfcomm_sock_getsockopt, | |
1049 | .ioctl = rfcomm_sock_ioctl, | |
1050 | .poll = bt_sock_poll, | |
1051 | .socketpair = sock_no_socketpair, | |
1052 | .mmap = sock_no_mmap | |
1053 | }; | |
1054 | ||
ec1b4cf7 | 1055 | static const struct net_proto_family rfcomm_sock_family_ops = { |
1da177e4 LT |
1056 | .family = PF_BLUETOOTH, |
1057 | .owner = THIS_MODULE, | |
1058 | .create = rfcomm_sock_create | |
1059 | }; | |
1060 | ||
be9d1227 | 1061 | int __init rfcomm_init_sockets(void) |
1da177e4 LT |
1062 | { |
1063 | int err; | |
1064 | ||
74b3fb8d MH |
1065 | BUILD_BUG_ON(sizeof(struct sockaddr_rc) > sizeof(struct sockaddr)); |
1066 | ||
1da177e4 LT |
1067 | err = proto_register(&rfcomm_proto, 0); |
1068 | if (err < 0) | |
1069 | return err; | |
1070 | ||
1071 | err = bt_sock_register(BTPROTO_RFCOMM, &rfcomm_sock_family_ops); | |
c6f5df16 MY |
1072 | if (err < 0) { |
1073 | BT_ERR("RFCOMM socket layer registration failed"); | |
1074 | goto error; | |
1075 | } | |
1076 | ||
b0316615 | 1077 | err = bt_procfs_init(&init_net, "rfcomm", &rfcomm_sk_list, NULL); |
c6f5df16 MY |
1078 | if (err < 0) { |
1079 | BT_ERR("Failed to create RFCOMM proc file"); | |
1080 | bt_sock_unregister(BTPROTO_RFCOMM); | |
1da177e4 | 1081 | goto error; |
c6f5df16 | 1082 | } |
1da177e4 | 1083 | |
1da177e4 LT |
1084 | BT_INFO("RFCOMM socket layer initialized"); |
1085 | ||
1120e4bf MH |
1086 | if (IS_ERR_OR_NULL(bt_debugfs)) |
1087 | return 0; | |
1088 | ||
1089 | rfcomm_sock_debugfs = debugfs_create_file("rfcomm", 0444, | |
1090 | bt_debugfs, NULL, | |
1091 | &rfcomm_sock_debugfs_fops); | |
1092 | ||
1da177e4 LT |
1093 | return 0; |
1094 | ||
1095 | error: | |
1da177e4 LT |
1096 | proto_unregister(&rfcomm_proto); |
1097 | return err; | |
1098 | } | |
1099 | ||
2f8362af | 1100 | void __exit rfcomm_cleanup_sockets(void) |
1da177e4 | 1101 | { |
c6f5df16 MY |
1102 | bt_procfs_cleanup(&init_net, "rfcomm"); |
1103 | ||
aef7d97c | 1104 | debugfs_remove(rfcomm_sock_debugfs); |
1da177e4 | 1105 | |
5e9d7f86 | 1106 | bt_sock_unregister(BTPROTO_RFCOMM); |
1da177e4 LT |
1107 | |
1108 | proto_unregister(&rfcomm_proto); | |
1109 | } |