Commit | Line | Data |
---|---|---|
8e87d142 | 1 | /* |
1da177e4 LT |
2 | BlueZ - Bluetooth protocol stack for Linux |
3 | Copyright (C) 2000-2001 Qualcomm Incorporated | |
4 | ||
5 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License version 2 as | |
9 | published by the Free Software Foundation; | |
10 | ||
11 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
12 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
13 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
14 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
8e87d142 YH |
15 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
16 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
17 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
1da177e4 LT |
18 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
19 | ||
8e87d142 YH |
20 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
21 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
1da177e4 LT |
22 | SOFTWARE IS DISCLAIMED. |
23 | */ | |
24 | ||
25 | /* Bluetooth address family and sockets. */ | |
26 | ||
1da177e4 LT |
27 | #include <linux/module.h> |
28 | ||
29 | #include <linux/types.h> | |
30 | #include <linux/list.h> | |
31 | #include <linux/errno.h> | |
32 | #include <linux/kernel.h> | |
1da177e4 | 33 | #include <linux/sched.h> |
1da177e4 LT |
34 | #include <linux/skbuff.h> |
35 | #include <linux/init.h> | |
36 | #include <linux/poll.h> | |
1da177e4 | 37 | #include <net/sock.h> |
3241ad82 | 38 | #include <asm/ioctls.h> |
1da177e4 | 39 | #include <linux/kmod.h> |
1da177e4 LT |
40 | |
41 | #include <net/bluetooth/bluetooth.h> | |
42 | ||
64274518 | 43 | #define VERSION "2.16" |
1da177e4 LT |
44 | |
45 | /* Bluetooth sockets */ | |
46 | #define BT_MAX_PROTO 8 | |
ec1b4cf7 | 47 | static const struct net_proto_family *bt_proto[BT_MAX_PROTO]; |
db7aa1c2 | 48 | static DEFINE_RWLOCK(bt_proto_lock); |
68845cb2 | 49 | |
68845cb2 | 50 | static struct lock_class_key bt_lock_key[BT_MAX_PROTO]; |
36cbd3dc | 51 | static const char *const bt_key_strings[BT_MAX_PROTO] = { |
68845cb2 DY |
52 | "sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP", |
53 | "sk_lock-AF_BLUETOOTH-BTPROTO_HCI", | |
54 | "sk_lock-AF_BLUETOOTH-BTPROTO_SCO", | |
55 | "sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM", | |
56 | "sk_lock-AF_BLUETOOTH-BTPROTO_BNEP", | |
57 | "sk_lock-AF_BLUETOOTH-BTPROTO_CMTP", | |
58 | "sk_lock-AF_BLUETOOTH-BTPROTO_HIDP", | |
59 | "sk_lock-AF_BLUETOOTH-BTPROTO_AVDTP", | |
60 | }; | |
61 | ||
db7aa1c2 | 62 | static struct lock_class_key bt_slock_key[BT_MAX_PROTO]; |
36cbd3dc | 63 | static const char *const bt_slock_key_strings[BT_MAX_PROTO] = { |
68845cb2 DY |
64 | "slock-AF_BLUETOOTH-BTPROTO_L2CAP", |
65 | "slock-AF_BLUETOOTH-BTPROTO_HCI", | |
66 | "slock-AF_BLUETOOTH-BTPROTO_SCO", | |
67 | "slock-AF_BLUETOOTH-BTPROTO_RFCOMM", | |
68 | "slock-AF_BLUETOOTH-BTPROTO_BNEP", | |
69 | "slock-AF_BLUETOOTH-BTPROTO_CMTP", | |
70 | "slock-AF_BLUETOOTH-BTPROTO_HIDP", | |
71 | "slock-AF_BLUETOOTH-BTPROTO_AVDTP", | |
72 | }; | |
db7aa1c2 MH |
73 | |
74 | static inline void bt_sock_reclassify_lock(struct socket *sock, int proto) | |
75 | { | |
76 | struct sock *sk = sock->sk; | |
77 | ||
78 | if (!sk) | |
79 | return; | |
80 | ||
81 | BUG_ON(sock_owned_by_user(sk)); | |
82 | ||
83 | sock_lock_init_class_and_name(sk, | |
84 | bt_slock_key_strings[proto], &bt_slock_key[proto], | |
85 | bt_key_strings[proto], &bt_lock_key[proto]); | |
86 | } | |
1da177e4 | 87 | |
ec1b4cf7 | 88 | int bt_sock_register(int proto, const struct net_proto_family *ops) |
1da177e4 | 89 | { |
74da626a MH |
90 | int err = 0; |
91 | ||
1da177e4 LT |
92 | if (proto < 0 || proto >= BT_MAX_PROTO) |
93 | return -EINVAL; | |
94 | ||
74da626a MH |
95 | write_lock(&bt_proto_lock); |
96 | ||
1da177e4 | 97 | if (bt_proto[proto]) |
74da626a MH |
98 | err = -EEXIST; |
99 | else | |
100 | bt_proto[proto] = ops; | |
101 | ||
102 | write_unlock(&bt_proto_lock); | |
1da177e4 | 103 | |
74da626a | 104 | return err; |
1da177e4 LT |
105 | } |
106 | EXPORT_SYMBOL(bt_sock_register); | |
107 | ||
108 | int bt_sock_unregister(int proto) | |
109 | { | |
74da626a MH |
110 | int err = 0; |
111 | ||
1da177e4 LT |
112 | if (proto < 0 || proto >= BT_MAX_PROTO) |
113 | return -EINVAL; | |
114 | ||
74da626a MH |
115 | write_lock(&bt_proto_lock); |
116 | ||
1da177e4 | 117 | if (!bt_proto[proto]) |
74da626a MH |
118 | err = -ENOENT; |
119 | else | |
120 | bt_proto[proto] = NULL; | |
1da177e4 | 121 | |
74da626a MH |
122 | write_unlock(&bt_proto_lock); |
123 | ||
124 | return err; | |
1da177e4 LT |
125 | } |
126 | EXPORT_SYMBOL(bt_sock_unregister); | |
127 | ||
3f378b68 EP |
128 | static int bt_sock_create(struct net *net, struct socket *sock, int proto, |
129 | int kern) | |
1da177e4 | 130 | { |
74da626a | 131 | int err; |
1da177e4 | 132 | |
1b8d7ae4 EB |
133 | if (net != &init_net) |
134 | return -EAFNOSUPPORT; | |
135 | ||
1da177e4 LT |
136 | if (proto < 0 || proto >= BT_MAX_PROTO) |
137 | return -EINVAL; | |
138 | ||
95a5afca | 139 | if (!bt_proto[proto]) |
1da177e4 | 140 | request_module("bt-proto-%d", proto); |
74da626a | 141 | |
1da177e4 | 142 | err = -EPROTONOSUPPORT; |
74da626a MH |
143 | |
144 | read_lock(&bt_proto_lock); | |
145 | ||
1da177e4 | 146 | if (bt_proto[proto] && try_module_get(bt_proto[proto]->owner)) { |
3f378b68 | 147 | err = bt_proto[proto]->create(net, sock, proto, kern); |
db7aa1c2 | 148 | bt_sock_reclassify_lock(sock, proto); |
1da177e4 LT |
149 | module_put(bt_proto[proto]->owner); |
150 | } | |
74da626a MH |
151 | |
152 | read_unlock(&bt_proto_lock); | |
153 | ||
8e87d142 | 154 | return err; |
1da177e4 LT |
155 | } |
156 | ||
157 | void bt_sock_link(struct bt_sock_list *l, struct sock *sk) | |
158 | { | |
159 | write_lock_bh(&l->lock); | |
160 | sk_add_node(sk, &l->head); | |
161 | write_unlock_bh(&l->lock); | |
162 | } | |
163 | EXPORT_SYMBOL(bt_sock_link); | |
164 | ||
165 | void bt_sock_unlink(struct bt_sock_list *l, struct sock *sk) | |
166 | { | |
167 | write_lock_bh(&l->lock); | |
168 | sk_del_node_init(sk); | |
169 | write_unlock_bh(&l->lock); | |
170 | } | |
171 | EXPORT_SYMBOL(bt_sock_unlink); | |
172 | ||
173 | void bt_accept_enqueue(struct sock *parent, struct sock *sk) | |
174 | { | |
175 | BT_DBG("parent %p, sk %p", parent, sk); | |
176 | ||
177 | sock_hold(sk); | |
178 | list_add_tail(&bt_sk(sk)->accept_q, &bt_sk(parent)->accept_q); | |
179 | bt_sk(sk)->parent = parent; | |
180 | parent->sk_ack_backlog++; | |
181 | } | |
182 | EXPORT_SYMBOL(bt_accept_enqueue); | |
183 | ||
184 | void bt_accept_unlink(struct sock *sk) | |
185 | { | |
186 | BT_DBG("sk %p state %d", sk, sk->sk_state); | |
187 | ||
188 | list_del_init(&bt_sk(sk)->accept_q); | |
189 | bt_sk(sk)->parent->sk_ack_backlog--; | |
190 | bt_sk(sk)->parent = NULL; | |
191 | sock_put(sk); | |
192 | } | |
193 | EXPORT_SYMBOL(bt_accept_unlink); | |
194 | ||
195 | struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock) | |
196 | { | |
197 | struct list_head *p, *n; | |
198 | struct sock *sk; | |
199 | ||
200 | BT_DBG("parent %p", parent); | |
201 | ||
d37f50e1 | 202 | local_bh_disable(); |
1da177e4 LT |
203 | list_for_each_safe(p, n, &bt_sk(parent)->accept_q) { |
204 | sk = (struct sock *) list_entry(p, struct bt_sock, accept_q); | |
205 | ||
d37f50e1 | 206 | bh_lock_sock(sk); |
1da177e4 LT |
207 | |
208 | /* FIXME: Is this check still needed */ | |
209 | if (sk->sk_state == BT_CLOSED) { | |
d37f50e1 | 210 | bh_unlock_sock(sk); |
1da177e4 LT |
211 | bt_accept_unlink(sk); |
212 | continue; | |
213 | } | |
214 | ||
c4f912e1 MH |
215 | if (sk->sk_state == BT_CONNECTED || !newsock || |
216 | bt_sk(parent)->defer_setup) { | |
1da177e4 LT |
217 | bt_accept_unlink(sk); |
218 | if (newsock) | |
219 | sock_graft(sk, newsock); | |
d37f50e1 AE |
220 | |
221 | bh_unlock_sock(sk); | |
222 | local_bh_enable(); | |
1da177e4 LT |
223 | return sk; |
224 | } | |
225 | ||
d37f50e1 | 226 | bh_unlock_sock(sk); |
1da177e4 | 227 | } |
d37f50e1 AE |
228 | local_bh_enable(); |
229 | ||
1da177e4 LT |
230 | return NULL; |
231 | } | |
232 | EXPORT_SYMBOL(bt_accept_dequeue); | |
233 | ||
234 | int bt_sock_recvmsg(struct kiocb *iocb, struct socket *sock, | |
c4f912e1 | 235 | struct msghdr *msg, size_t len, int flags) |
1da177e4 LT |
236 | { |
237 | int noblock = flags & MSG_DONTWAIT; | |
238 | struct sock *sk = sock->sk; | |
239 | struct sk_buff *skb; | |
240 | size_t copied; | |
241 | int err; | |
242 | ||
a418b893 | 243 | BT_DBG("sock %p sk %p len %zu", sock, sk, len); |
1da177e4 LT |
244 | |
245 | if (flags & (MSG_OOB)) | |
246 | return -EOPNOTSUPP; | |
247 | ||
5a08ecce AE |
248 | skb = skb_recv_datagram(sk, flags, noblock, &err); |
249 | if (!skb) { | |
1da177e4 LT |
250 | if (sk->sk_shutdown & RCV_SHUTDOWN) |
251 | return 0; | |
252 | return err; | |
253 | } | |
254 | ||
255 | msg->msg_namelen = 0; | |
256 | ||
257 | copied = skb->len; | |
258 | if (len < copied) { | |
259 | msg->msg_flags |= MSG_TRUNC; | |
260 | copied = len; | |
261 | } | |
262 | ||
badff6d0 | 263 | skb_reset_transport_header(skb); |
1da177e4 | 264 | err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied); |
3241ad82 | 265 | if (err == 0) |
3b885787 | 266 | sock_recv_ts_and_drops(msg, sk, skb); |
1da177e4 LT |
267 | |
268 | skb_free_datagram(sk, skb); | |
269 | ||
270 | return err ? : copied; | |
271 | } | |
272 | EXPORT_SYMBOL(bt_sock_recvmsg); | |
273 | ||
796c86ee MM |
274 | static long bt_sock_data_wait(struct sock *sk, long timeo) |
275 | { | |
276 | DECLARE_WAITQUEUE(wait, current); | |
277 | ||
278 | add_wait_queue(sk_sleep(sk), &wait); | |
279 | for (;;) { | |
280 | set_current_state(TASK_INTERRUPTIBLE); | |
281 | ||
282 | if (!skb_queue_empty(&sk->sk_receive_queue)) | |
283 | break; | |
284 | ||
285 | if (sk->sk_err || (sk->sk_shutdown & RCV_SHUTDOWN)) | |
286 | break; | |
287 | ||
288 | if (signal_pending(current) || !timeo) | |
289 | break; | |
290 | ||
291 | set_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags); | |
292 | release_sock(sk); | |
293 | timeo = schedule_timeout(timeo); | |
294 | lock_sock(sk); | |
295 | clear_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags); | |
296 | } | |
297 | ||
298 | __set_current_state(TASK_RUNNING); | |
299 | remove_wait_queue(sk_sleep(sk), &wait); | |
300 | return timeo; | |
301 | } | |
302 | ||
303 | int bt_sock_stream_recvmsg(struct kiocb *iocb, struct socket *sock, | |
304 | struct msghdr *msg, size_t size, int flags) | |
305 | { | |
306 | struct sock *sk = sock->sk; | |
307 | int err = 0; | |
308 | size_t target, copied = 0; | |
309 | long timeo; | |
310 | ||
311 | if (flags & MSG_OOB) | |
312 | return -EOPNOTSUPP; | |
313 | ||
314 | msg->msg_namelen = 0; | |
315 | ||
316 | BT_DBG("sk %p size %zu", sk, size); | |
317 | ||
318 | lock_sock(sk); | |
319 | ||
320 | target = sock_rcvlowat(sk, flags & MSG_WAITALL, size); | |
321 | timeo = sock_rcvtimeo(sk, flags & MSG_DONTWAIT); | |
322 | ||
323 | do { | |
324 | struct sk_buff *skb; | |
325 | int chunk; | |
326 | ||
327 | skb = skb_dequeue(&sk->sk_receive_queue); | |
328 | if (!skb) { | |
329 | if (copied >= target) | |
330 | break; | |
331 | ||
5a08ecce AE |
332 | err = sock_error(sk); |
333 | if (err) | |
796c86ee MM |
334 | break; |
335 | if (sk->sk_shutdown & RCV_SHUTDOWN) | |
336 | break; | |
337 | ||
338 | err = -EAGAIN; | |
339 | if (!timeo) | |
340 | break; | |
341 | ||
342 | timeo = bt_sock_data_wait(sk, timeo); | |
343 | ||
344 | if (signal_pending(current)) { | |
345 | err = sock_intr_errno(timeo); | |
346 | goto out; | |
347 | } | |
348 | continue; | |
349 | } | |
350 | ||
351 | chunk = min_t(unsigned int, skb->len, size); | |
5b668eb3 | 352 | if (skb_copy_datagram_iovec(skb, 0, msg->msg_iov, chunk)) { |
796c86ee MM |
353 | skb_queue_head(&sk->sk_receive_queue, skb); |
354 | if (!copied) | |
355 | copied = -EFAULT; | |
356 | break; | |
357 | } | |
358 | copied += chunk; | |
359 | size -= chunk; | |
360 | ||
361 | sock_recv_ts_and_drops(msg, sk, skb); | |
362 | ||
363 | if (!(flags & MSG_PEEK)) { | |
5b668eb3 MM |
364 | int skb_len = skb_headlen(skb); |
365 | ||
366 | if (chunk <= skb_len) { | |
367 | __skb_pull(skb, chunk); | |
368 | } else { | |
369 | struct sk_buff *frag; | |
370 | ||
371 | __skb_pull(skb, skb_len); | |
372 | chunk -= skb_len; | |
373 | ||
374 | skb_walk_frags(skb, frag) { | |
375 | if (chunk <= frag->len) { | |
376 | /* Pulling partial data */ | |
377 | skb->len -= chunk; | |
378 | skb->data_len -= chunk; | |
379 | __skb_pull(frag, chunk); | |
380 | break; | |
381 | } else if (frag->len) { | |
382 | /* Pulling all frag data */ | |
383 | chunk -= frag->len; | |
384 | skb->len -= frag->len; | |
385 | skb->data_len -= frag->len; | |
386 | __skb_pull(frag, frag->len); | |
387 | } | |
388 | } | |
389 | } | |
390 | ||
796c86ee MM |
391 | if (skb->len) { |
392 | skb_queue_head(&sk->sk_receive_queue, skb); | |
393 | break; | |
394 | } | |
395 | kfree_skb(skb); | |
396 | ||
397 | } else { | |
398 | /* put message back and return */ | |
399 | skb_queue_head(&sk->sk_receive_queue, skb); | |
400 | break; | |
401 | } | |
402 | } while (size); | |
403 | ||
404 | out: | |
405 | release_sock(sk); | |
406 | return copied ? : err; | |
407 | } | |
408 | EXPORT_SYMBOL(bt_sock_stream_recvmsg); | |
409 | ||
1da177e4 LT |
410 | static inline unsigned int bt_accept_poll(struct sock *parent) |
411 | { | |
412 | struct list_head *p, *n; | |
413 | struct sock *sk; | |
414 | ||
415 | list_for_each_safe(p, n, &bt_sk(parent)->accept_q) { | |
416 | sk = (struct sock *) list_entry(p, struct bt_sock, accept_q); | |
d5f2d2be MH |
417 | if (sk->sk_state == BT_CONNECTED || |
418 | (bt_sk(parent)->defer_setup && | |
419 | sk->sk_state == BT_CONNECT2)) | |
1da177e4 LT |
420 | return POLLIN | POLLRDNORM; |
421 | } | |
422 | ||
423 | return 0; | |
424 | } | |
425 | ||
8ffd8784 | 426 | unsigned int bt_sock_poll(struct file *file, struct socket *sock, poll_table *wait) |
1da177e4 LT |
427 | { |
428 | struct sock *sk = sock->sk; | |
429 | unsigned int mask = 0; | |
430 | ||
431 | BT_DBG("sock %p, sk %p", sock, sk); | |
432 | ||
aa395145 | 433 | poll_wait(file, sk_sleep(sk), wait); |
1da177e4 LT |
434 | |
435 | if (sk->sk_state == BT_LISTEN) | |
436 | return bt_accept_poll(sk); | |
437 | ||
438 | if (sk->sk_err || !skb_queue_empty(&sk->sk_error_queue)) | |
439 | mask |= POLLERR; | |
440 | ||
f348d70a | 441 | if (sk->sk_shutdown & RCV_SHUTDOWN) |
db40980f | 442 | mask |= POLLRDHUP | POLLIN | POLLRDNORM; |
f348d70a | 443 | |
1da177e4 LT |
444 | if (sk->sk_shutdown == SHUTDOWN_MASK) |
445 | mask |= POLLHUP; | |
446 | ||
db40980f | 447 | if (!skb_queue_empty(&sk->sk_receive_queue)) |
1da177e4 LT |
448 | mask |= POLLIN | POLLRDNORM; |
449 | ||
450 | if (sk->sk_state == BT_CLOSED) | |
451 | mask |= POLLHUP; | |
452 | ||
453 | if (sk->sk_state == BT_CONNECT || | |
454 | sk->sk_state == BT_CONNECT2 || | |
455 | sk->sk_state == BT_CONFIG) | |
456 | return mask; | |
457 | ||
458 | if (sock_writeable(sk)) | |
459 | mask |= POLLOUT | POLLWRNORM | POLLWRBAND; | |
460 | else | |
461 | set_bit(SOCK_ASYNC_NOSPACE, &sk->sk_socket->flags); | |
462 | ||
463 | return mask; | |
464 | } | |
465 | EXPORT_SYMBOL(bt_sock_poll); | |
466 | ||
3241ad82 MH |
467 | int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) |
468 | { | |
469 | struct sock *sk = sock->sk; | |
43cbeee9 MH |
470 | struct sk_buff *skb; |
471 | long amount; | |
3241ad82 MH |
472 | int err; |
473 | ||
474 | BT_DBG("sk %p cmd %x arg %lx", sk, cmd, arg); | |
475 | ||
476 | switch (cmd) { | |
43cbeee9 MH |
477 | case TIOCOUTQ: |
478 | if (sk->sk_state == BT_LISTEN) | |
479 | return -EINVAL; | |
480 | ||
31e6d363 | 481 | amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk); |
43cbeee9 MH |
482 | if (amount < 0) |
483 | amount = 0; | |
484 | err = put_user(amount, (int __user *) arg); | |
485 | break; | |
486 | ||
487 | case TIOCINQ: | |
488 | if (sk->sk_state == BT_LISTEN) | |
489 | return -EINVAL; | |
490 | ||
491 | lock_sock(sk); | |
492 | skb = skb_peek(&sk->sk_receive_queue); | |
493 | amount = skb ? skb->len : 0; | |
494 | release_sock(sk); | |
495 | err = put_user(amount, (int __user *) arg); | |
496 | break; | |
497 | ||
3241ad82 MH |
498 | case SIOCGSTAMP: |
499 | err = sock_get_timestamp(sk, (struct timeval __user *) arg); | |
500 | break; | |
501 | ||
502 | case SIOCGSTAMPNS: | |
503 | err = sock_get_timestampns(sk, (struct timespec __user *) arg); | |
504 | break; | |
505 | ||
506 | default: | |
507 | err = -ENOIOCTLCMD; | |
508 | break; | |
509 | } | |
510 | ||
511 | return err; | |
512 | } | |
513 | EXPORT_SYMBOL(bt_sock_ioctl); | |
514 | ||
1da177e4 LT |
515 | int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo) |
516 | { | |
517 | DECLARE_WAITQUEUE(wait, current); | |
518 | int err = 0; | |
519 | ||
520 | BT_DBG("sk %p", sk); | |
521 | ||
aa395145 | 522 | add_wait_queue(sk_sleep(sk), &wait); |
9be4e3fb | 523 | set_current_state(TASK_INTERRUPTIBLE); |
1da177e4 | 524 | while (sk->sk_state != state) { |
1da177e4 | 525 | if (!timeo) { |
b4c612a4 | 526 | err = -EINPROGRESS; |
1da177e4 LT |
527 | break; |
528 | } | |
529 | ||
530 | if (signal_pending(current)) { | |
531 | err = sock_intr_errno(timeo); | |
532 | break; | |
533 | } | |
534 | ||
535 | release_sock(sk); | |
536 | timeo = schedule_timeout(timeo); | |
537 | lock_sock(sk); | |
9be4e3fb | 538 | set_current_state(TASK_INTERRUPTIBLE); |
1da177e4 | 539 | |
c1cbe4b7 BL |
540 | err = sock_error(sk); |
541 | if (err) | |
1da177e4 | 542 | break; |
1da177e4 | 543 | } |
9be4e3fb | 544 | __set_current_state(TASK_RUNNING); |
aa395145 | 545 | remove_wait_queue(sk_sleep(sk), &wait); |
1da177e4 LT |
546 | return err; |
547 | } | |
548 | EXPORT_SYMBOL(bt_sock_wait_state); | |
549 | ||
550 | static struct net_proto_family bt_sock_family_ops = { | |
551 | .owner = THIS_MODULE, | |
552 | .family = PF_BLUETOOTH, | |
553 | .create = bt_sock_create, | |
554 | }; | |
555 | ||
1da177e4 LT |
556 | static int __init bt_init(void) |
557 | { | |
27d35284 MH |
558 | int err; |
559 | ||
1da177e4 LT |
560 | BT_INFO("Core ver %s", VERSION); |
561 | ||
27d35284 MH |
562 | err = bt_sysfs_init(); |
563 | if (err < 0) | |
564 | return err; | |
1da177e4 | 565 | |
27d35284 MH |
566 | err = sock_register(&bt_sock_family_ops); |
567 | if (err < 0) { | |
568 | bt_sysfs_cleanup(); | |
569 | return err; | |
570 | } | |
1da177e4 | 571 | |
27d35284 | 572 | BT_INFO("HCI device and connection manager initialized"); |
1da177e4 | 573 | |
64274518 GP |
574 | err = hci_sock_init(); |
575 | if (err < 0) | |
576 | goto error; | |
577 | ||
578 | err = l2cap_init(); | |
0ed54dad | 579 | if (err < 0) |
64274518 | 580 | goto sock_err; |
64274518 GP |
581 | |
582 | err = sco_init(); | |
583 | if (err < 0) { | |
584 | l2cap_exit(); | |
585 | goto sock_err; | |
586 | } | |
1da177e4 LT |
587 | |
588 | return 0; | |
64274518 GP |
589 | |
590 | sock_err: | |
591 | hci_sock_cleanup(); | |
592 | ||
593 | error: | |
594 | sock_unregister(PF_BLUETOOTH); | |
595 | bt_sysfs_cleanup(); | |
596 | ||
597 | return err; | |
1da177e4 LT |
598 | } |
599 | ||
600 | static void __exit bt_exit(void) | |
601 | { | |
64274518 GP |
602 | |
603 | sco_exit(); | |
604 | ||
605 | l2cap_exit(); | |
606 | ||
1da177e4 LT |
607 | hci_sock_cleanup(); |
608 | ||
1da177e4 | 609 | sock_unregister(PF_BLUETOOTH); |
27d35284 MH |
610 | |
611 | bt_sysfs_cleanup(); | |
1da177e4 LT |
612 | } |
613 | ||
614 | subsys_initcall(bt_init); | |
615 | module_exit(bt_exit); | |
616 | ||
63fbd24e | 617 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); |
1da177e4 LT |
618 | MODULE_DESCRIPTION("Bluetooth Core ver " VERSION); |
619 | MODULE_VERSION(VERSION); | |
620 | MODULE_LICENSE("GPL"); | |
621 | MODULE_ALIAS_NETPROTO(PF_BLUETOOTH); |