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 | 73 | |
b5a30dda | 74 | void bt_sock_reclassify_lock(struct sock *sk, int proto) |
db7aa1c2 | 75 | { |
b5a30dda | 76 | BUG_ON(!sk); |
db7aa1c2 MH |
77 | BUG_ON(sock_owned_by_user(sk)); |
78 | ||
79 | sock_lock_init_class_and_name(sk, | |
80 | bt_slock_key_strings[proto], &bt_slock_key[proto], | |
81 | bt_key_strings[proto], &bt_lock_key[proto]); | |
82 | } | |
b5a30dda | 83 | EXPORT_SYMBOL(bt_sock_reclassify_lock); |
1da177e4 | 84 | |
ec1b4cf7 | 85 | int bt_sock_register(int proto, const struct net_proto_family *ops) |
1da177e4 | 86 | { |
74da626a MH |
87 | int err = 0; |
88 | ||
1da177e4 LT |
89 | if (proto < 0 || proto >= BT_MAX_PROTO) |
90 | return -EINVAL; | |
91 | ||
74da626a MH |
92 | write_lock(&bt_proto_lock); |
93 | ||
1da177e4 | 94 | if (bt_proto[proto]) |
74da626a MH |
95 | err = -EEXIST; |
96 | else | |
97 | bt_proto[proto] = ops; | |
98 | ||
99 | write_unlock(&bt_proto_lock); | |
1da177e4 | 100 | |
74da626a | 101 | return err; |
1da177e4 LT |
102 | } |
103 | EXPORT_SYMBOL(bt_sock_register); | |
104 | ||
105 | int bt_sock_unregister(int proto) | |
106 | { | |
74da626a MH |
107 | int err = 0; |
108 | ||
1da177e4 LT |
109 | if (proto < 0 || proto >= BT_MAX_PROTO) |
110 | return -EINVAL; | |
111 | ||
74da626a MH |
112 | write_lock(&bt_proto_lock); |
113 | ||
1da177e4 | 114 | if (!bt_proto[proto]) |
74da626a MH |
115 | err = -ENOENT; |
116 | else | |
117 | bt_proto[proto] = NULL; | |
1da177e4 | 118 | |
74da626a MH |
119 | write_unlock(&bt_proto_lock); |
120 | ||
121 | return err; | |
1da177e4 LT |
122 | } |
123 | EXPORT_SYMBOL(bt_sock_unregister); | |
124 | ||
3f378b68 EP |
125 | static int bt_sock_create(struct net *net, struct socket *sock, int proto, |
126 | int kern) | |
1da177e4 | 127 | { |
74da626a | 128 | int err; |
1da177e4 | 129 | |
1b8d7ae4 EB |
130 | if (net != &init_net) |
131 | return -EAFNOSUPPORT; | |
132 | ||
1da177e4 LT |
133 | if (proto < 0 || proto >= BT_MAX_PROTO) |
134 | return -EINVAL; | |
135 | ||
95a5afca | 136 | if (!bt_proto[proto]) |
1da177e4 | 137 | request_module("bt-proto-%d", proto); |
74da626a | 138 | |
1da177e4 | 139 | err = -EPROTONOSUPPORT; |
74da626a MH |
140 | |
141 | read_lock(&bt_proto_lock); | |
142 | ||
1da177e4 | 143 | if (bt_proto[proto] && try_module_get(bt_proto[proto]->owner)) { |
3f378b68 | 144 | err = bt_proto[proto]->create(net, sock, proto, kern); |
b5a30dda OP |
145 | if (!err) |
146 | bt_sock_reclassify_lock(sock->sk, proto); | |
1da177e4 LT |
147 | module_put(bt_proto[proto]->owner); |
148 | } | |
74da626a MH |
149 | |
150 | read_unlock(&bt_proto_lock); | |
151 | ||
8e87d142 | 152 | return err; |
1da177e4 LT |
153 | } |
154 | ||
155 | void bt_sock_link(struct bt_sock_list *l, struct sock *sk) | |
156 | { | |
94f5bfb8 | 157 | write_lock(&l->lock); |
1da177e4 | 158 | sk_add_node(sk, &l->head); |
94f5bfb8 | 159 | write_unlock(&l->lock); |
1da177e4 LT |
160 | } |
161 | EXPORT_SYMBOL(bt_sock_link); | |
162 | ||
163 | void bt_sock_unlink(struct bt_sock_list *l, struct sock *sk) | |
164 | { | |
94f5bfb8 | 165 | write_lock(&l->lock); |
1da177e4 | 166 | sk_del_node_init(sk); |
94f5bfb8 | 167 | write_unlock(&l->lock); |
1da177e4 LT |
168 | } |
169 | EXPORT_SYMBOL(bt_sock_unlink); | |
170 | ||
171 | void bt_accept_enqueue(struct sock *parent, struct sock *sk) | |
172 | { | |
173 | BT_DBG("parent %p, sk %p", parent, sk); | |
174 | ||
175 | sock_hold(sk); | |
176 | list_add_tail(&bt_sk(sk)->accept_q, &bt_sk(parent)->accept_q); | |
177 | bt_sk(sk)->parent = parent; | |
178 | parent->sk_ack_backlog++; | |
179 | } | |
180 | EXPORT_SYMBOL(bt_accept_enqueue); | |
181 | ||
182 | void bt_accept_unlink(struct sock *sk) | |
183 | { | |
184 | BT_DBG("sk %p state %d", sk, sk->sk_state); | |
185 | ||
186 | list_del_init(&bt_sk(sk)->accept_q); | |
187 | bt_sk(sk)->parent->sk_ack_backlog--; | |
188 | bt_sk(sk)->parent = NULL; | |
189 | sock_put(sk); | |
190 | } | |
191 | EXPORT_SYMBOL(bt_accept_unlink); | |
192 | ||
193 | struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock) | |
194 | { | |
195 | struct list_head *p, *n; | |
196 | struct sock *sk; | |
197 | ||
198 | BT_DBG("parent %p", parent); | |
199 | ||
200 | list_for_each_safe(p, n, &bt_sk(parent)->accept_q) { | |
201 | sk = (struct sock *) list_entry(p, struct bt_sock, accept_q); | |
202 | ||
8a154a8f | 203 | lock_sock(sk); |
1da177e4 LT |
204 | |
205 | /* FIXME: Is this check still needed */ | |
206 | if (sk->sk_state == BT_CLOSED) { | |
8a154a8f | 207 | release_sock(sk); |
1da177e4 LT |
208 | bt_accept_unlink(sk); |
209 | continue; | |
210 | } | |
211 | ||
c4f912e1 MH |
212 | if (sk->sk_state == BT_CONNECTED || !newsock || |
213 | bt_sk(parent)->defer_setup) { | |
1da177e4 LT |
214 | bt_accept_unlink(sk); |
215 | if (newsock) | |
216 | sock_graft(sk, newsock); | |
d37f50e1 | 217 | |
8a154a8f | 218 | release_sock(sk); |
1da177e4 LT |
219 | return sk; |
220 | } | |
221 | ||
8a154a8f | 222 | release_sock(sk); |
1da177e4 | 223 | } |
d37f50e1 | 224 | |
1da177e4 LT |
225 | return NULL; |
226 | } | |
227 | EXPORT_SYMBOL(bt_accept_dequeue); | |
228 | ||
229 | int bt_sock_recvmsg(struct kiocb *iocb, struct socket *sock, | |
c4f912e1 | 230 | struct msghdr *msg, size_t len, int flags) |
1da177e4 LT |
231 | { |
232 | int noblock = flags & MSG_DONTWAIT; | |
233 | struct sock *sk = sock->sk; | |
234 | struct sk_buff *skb; | |
235 | size_t copied; | |
236 | int err; | |
237 | ||
a418b893 | 238 | BT_DBG("sock %p sk %p len %zu", sock, sk, len); |
1da177e4 LT |
239 | |
240 | if (flags & (MSG_OOB)) | |
241 | return -EOPNOTSUPP; | |
242 | ||
5a08ecce AE |
243 | skb = skb_recv_datagram(sk, flags, noblock, &err); |
244 | if (!skb) { | |
1da177e4 LT |
245 | if (sk->sk_shutdown & RCV_SHUTDOWN) |
246 | return 0; | |
247 | return err; | |
248 | } | |
249 | ||
250 | msg->msg_namelen = 0; | |
251 | ||
252 | copied = skb->len; | |
253 | if (len < copied) { | |
254 | msg->msg_flags |= MSG_TRUNC; | |
255 | copied = len; | |
256 | } | |
257 | ||
badff6d0 | 258 | skb_reset_transport_header(skb); |
1da177e4 | 259 | err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied); |
3241ad82 | 260 | if (err == 0) |
3b885787 | 261 | sock_recv_ts_and_drops(msg, sk, skb); |
1da177e4 LT |
262 | |
263 | skb_free_datagram(sk, skb); | |
264 | ||
265 | return err ? : copied; | |
266 | } | |
267 | EXPORT_SYMBOL(bt_sock_recvmsg); | |
268 | ||
796c86ee MM |
269 | static long bt_sock_data_wait(struct sock *sk, long timeo) |
270 | { | |
271 | DECLARE_WAITQUEUE(wait, current); | |
272 | ||
273 | add_wait_queue(sk_sleep(sk), &wait); | |
274 | for (;;) { | |
275 | set_current_state(TASK_INTERRUPTIBLE); | |
276 | ||
277 | if (!skb_queue_empty(&sk->sk_receive_queue)) | |
278 | break; | |
279 | ||
280 | if (sk->sk_err || (sk->sk_shutdown & RCV_SHUTDOWN)) | |
281 | break; | |
282 | ||
283 | if (signal_pending(current) || !timeo) | |
284 | break; | |
285 | ||
286 | set_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags); | |
287 | release_sock(sk); | |
288 | timeo = schedule_timeout(timeo); | |
289 | lock_sock(sk); | |
290 | clear_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags); | |
291 | } | |
292 | ||
293 | __set_current_state(TASK_RUNNING); | |
294 | remove_wait_queue(sk_sleep(sk), &wait); | |
295 | return timeo; | |
296 | } | |
297 | ||
298 | int bt_sock_stream_recvmsg(struct kiocb *iocb, struct socket *sock, | |
299 | struct msghdr *msg, size_t size, int flags) | |
300 | { | |
301 | struct sock *sk = sock->sk; | |
302 | int err = 0; | |
303 | size_t target, copied = 0; | |
304 | long timeo; | |
305 | ||
306 | if (flags & MSG_OOB) | |
307 | return -EOPNOTSUPP; | |
308 | ||
309 | msg->msg_namelen = 0; | |
310 | ||
311 | BT_DBG("sk %p size %zu", sk, size); | |
312 | ||
313 | lock_sock(sk); | |
314 | ||
315 | target = sock_rcvlowat(sk, flags & MSG_WAITALL, size); | |
316 | timeo = sock_rcvtimeo(sk, flags & MSG_DONTWAIT); | |
317 | ||
318 | do { | |
319 | struct sk_buff *skb; | |
320 | int chunk; | |
321 | ||
322 | skb = skb_dequeue(&sk->sk_receive_queue); | |
323 | if (!skb) { | |
324 | if (copied >= target) | |
325 | break; | |
326 | ||
5a08ecce AE |
327 | err = sock_error(sk); |
328 | if (err) | |
796c86ee MM |
329 | break; |
330 | if (sk->sk_shutdown & RCV_SHUTDOWN) | |
331 | break; | |
332 | ||
333 | err = -EAGAIN; | |
334 | if (!timeo) | |
335 | break; | |
336 | ||
337 | timeo = bt_sock_data_wait(sk, timeo); | |
338 | ||
339 | if (signal_pending(current)) { | |
340 | err = sock_intr_errno(timeo); | |
341 | goto out; | |
342 | } | |
343 | continue; | |
344 | } | |
345 | ||
346 | chunk = min_t(unsigned int, skb->len, size); | |
5b668eb3 | 347 | if (skb_copy_datagram_iovec(skb, 0, msg->msg_iov, chunk)) { |
796c86ee MM |
348 | skb_queue_head(&sk->sk_receive_queue, skb); |
349 | if (!copied) | |
350 | copied = -EFAULT; | |
351 | break; | |
352 | } | |
353 | copied += chunk; | |
354 | size -= chunk; | |
355 | ||
356 | sock_recv_ts_and_drops(msg, sk, skb); | |
357 | ||
358 | if (!(flags & MSG_PEEK)) { | |
5b668eb3 MM |
359 | int skb_len = skb_headlen(skb); |
360 | ||
361 | if (chunk <= skb_len) { | |
362 | __skb_pull(skb, chunk); | |
363 | } else { | |
364 | struct sk_buff *frag; | |
365 | ||
366 | __skb_pull(skb, skb_len); | |
367 | chunk -= skb_len; | |
368 | ||
369 | skb_walk_frags(skb, frag) { | |
370 | if (chunk <= frag->len) { | |
371 | /* Pulling partial data */ | |
372 | skb->len -= chunk; | |
373 | skb->data_len -= chunk; | |
374 | __skb_pull(frag, chunk); | |
375 | break; | |
376 | } else if (frag->len) { | |
377 | /* Pulling all frag data */ | |
378 | chunk -= frag->len; | |
379 | skb->len -= frag->len; | |
380 | skb->data_len -= frag->len; | |
381 | __skb_pull(frag, frag->len); | |
382 | } | |
383 | } | |
384 | } | |
385 | ||
796c86ee MM |
386 | if (skb->len) { |
387 | skb_queue_head(&sk->sk_receive_queue, skb); | |
388 | break; | |
389 | } | |
390 | kfree_skb(skb); | |
391 | ||
392 | } else { | |
393 | /* put message back and return */ | |
394 | skb_queue_head(&sk->sk_receive_queue, skb); | |
395 | break; | |
396 | } | |
397 | } while (size); | |
398 | ||
399 | out: | |
400 | release_sock(sk); | |
401 | return copied ? : err; | |
402 | } | |
403 | EXPORT_SYMBOL(bt_sock_stream_recvmsg); | |
404 | ||
1da177e4 LT |
405 | static inline unsigned int bt_accept_poll(struct sock *parent) |
406 | { | |
407 | struct list_head *p, *n; | |
408 | struct sock *sk; | |
409 | ||
410 | list_for_each_safe(p, n, &bt_sk(parent)->accept_q) { | |
411 | sk = (struct sock *) list_entry(p, struct bt_sock, accept_q); | |
d5f2d2be MH |
412 | if (sk->sk_state == BT_CONNECTED || |
413 | (bt_sk(parent)->defer_setup && | |
414 | sk->sk_state == BT_CONNECT2)) | |
1da177e4 LT |
415 | return POLLIN | POLLRDNORM; |
416 | } | |
417 | ||
418 | return 0; | |
419 | } | |
420 | ||
8ffd8784 | 421 | unsigned int bt_sock_poll(struct file *file, struct socket *sock, poll_table *wait) |
1da177e4 LT |
422 | { |
423 | struct sock *sk = sock->sk; | |
424 | unsigned int mask = 0; | |
425 | ||
426 | BT_DBG("sock %p, sk %p", sock, sk); | |
427 | ||
aa395145 | 428 | poll_wait(file, sk_sleep(sk), wait); |
1da177e4 LT |
429 | |
430 | if (sk->sk_state == BT_LISTEN) | |
431 | return bt_accept_poll(sk); | |
432 | ||
433 | if (sk->sk_err || !skb_queue_empty(&sk->sk_error_queue)) | |
434 | mask |= POLLERR; | |
435 | ||
f348d70a | 436 | if (sk->sk_shutdown & RCV_SHUTDOWN) |
db40980f | 437 | mask |= POLLRDHUP | POLLIN | POLLRDNORM; |
f348d70a | 438 | |
1da177e4 LT |
439 | if (sk->sk_shutdown == SHUTDOWN_MASK) |
440 | mask |= POLLHUP; | |
441 | ||
db40980f | 442 | if (!skb_queue_empty(&sk->sk_receive_queue)) |
1da177e4 LT |
443 | mask |= POLLIN | POLLRDNORM; |
444 | ||
445 | if (sk->sk_state == BT_CLOSED) | |
446 | mask |= POLLHUP; | |
447 | ||
448 | if (sk->sk_state == BT_CONNECT || | |
449 | sk->sk_state == BT_CONNECT2 || | |
450 | sk->sk_state == BT_CONFIG) | |
451 | return mask; | |
452 | ||
453 | if (sock_writeable(sk)) | |
454 | mask |= POLLOUT | POLLWRNORM | POLLWRBAND; | |
455 | else | |
456 | set_bit(SOCK_ASYNC_NOSPACE, &sk->sk_socket->flags); | |
457 | ||
458 | return mask; | |
459 | } | |
460 | EXPORT_SYMBOL(bt_sock_poll); | |
461 | ||
3241ad82 MH |
462 | int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) |
463 | { | |
464 | struct sock *sk = sock->sk; | |
43cbeee9 MH |
465 | struct sk_buff *skb; |
466 | long amount; | |
3241ad82 MH |
467 | int err; |
468 | ||
469 | BT_DBG("sk %p cmd %x arg %lx", sk, cmd, arg); | |
470 | ||
471 | switch (cmd) { | |
43cbeee9 MH |
472 | case TIOCOUTQ: |
473 | if (sk->sk_state == BT_LISTEN) | |
474 | return -EINVAL; | |
475 | ||
31e6d363 | 476 | amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk); |
43cbeee9 MH |
477 | if (amount < 0) |
478 | amount = 0; | |
479 | err = put_user(amount, (int __user *) arg); | |
480 | break; | |
481 | ||
482 | case TIOCINQ: | |
483 | if (sk->sk_state == BT_LISTEN) | |
484 | return -EINVAL; | |
485 | ||
486 | lock_sock(sk); | |
487 | skb = skb_peek(&sk->sk_receive_queue); | |
488 | amount = skb ? skb->len : 0; | |
489 | release_sock(sk); | |
490 | err = put_user(amount, (int __user *) arg); | |
491 | break; | |
492 | ||
3241ad82 MH |
493 | case SIOCGSTAMP: |
494 | err = sock_get_timestamp(sk, (struct timeval __user *) arg); | |
495 | break; | |
496 | ||
497 | case SIOCGSTAMPNS: | |
498 | err = sock_get_timestampns(sk, (struct timespec __user *) arg); | |
499 | break; | |
500 | ||
501 | default: | |
502 | err = -ENOIOCTLCMD; | |
503 | break; | |
504 | } | |
505 | ||
506 | return err; | |
507 | } | |
508 | EXPORT_SYMBOL(bt_sock_ioctl); | |
509 | ||
1da177e4 LT |
510 | int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo) |
511 | { | |
512 | DECLARE_WAITQUEUE(wait, current); | |
513 | int err = 0; | |
514 | ||
515 | BT_DBG("sk %p", sk); | |
516 | ||
aa395145 | 517 | add_wait_queue(sk_sleep(sk), &wait); |
9be4e3fb | 518 | set_current_state(TASK_INTERRUPTIBLE); |
1da177e4 | 519 | while (sk->sk_state != state) { |
1da177e4 | 520 | if (!timeo) { |
b4c612a4 | 521 | err = -EINPROGRESS; |
1da177e4 LT |
522 | break; |
523 | } | |
524 | ||
525 | if (signal_pending(current)) { | |
526 | err = sock_intr_errno(timeo); | |
527 | break; | |
528 | } | |
529 | ||
530 | release_sock(sk); | |
531 | timeo = schedule_timeout(timeo); | |
532 | lock_sock(sk); | |
9be4e3fb | 533 | set_current_state(TASK_INTERRUPTIBLE); |
1da177e4 | 534 | |
c1cbe4b7 BL |
535 | err = sock_error(sk); |
536 | if (err) | |
1da177e4 | 537 | break; |
1da177e4 | 538 | } |
9be4e3fb | 539 | __set_current_state(TASK_RUNNING); |
aa395145 | 540 | remove_wait_queue(sk_sleep(sk), &wait); |
1da177e4 LT |
541 | return err; |
542 | } | |
543 | EXPORT_SYMBOL(bt_sock_wait_state); | |
544 | ||
545 | static struct net_proto_family bt_sock_family_ops = { | |
546 | .owner = THIS_MODULE, | |
547 | .family = PF_BLUETOOTH, | |
548 | .create = bt_sock_create, | |
549 | }; | |
550 | ||
1da177e4 LT |
551 | static int __init bt_init(void) |
552 | { | |
27d35284 MH |
553 | int err; |
554 | ||
1da177e4 LT |
555 | BT_INFO("Core ver %s", VERSION); |
556 | ||
27d35284 MH |
557 | err = bt_sysfs_init(); |
558 | if (err < 0) | |
559 | return err; | |
1da177e4 | 560 | |
27d35284 MH |
561 | err = sock_register(&bt_sock_family_ops); |
562 | if (err < 0) { | |
563 | bt_sysfs_cleanup(); | |
564 | return err; | |
565 | } | |
1da177e4 | 566 | |
27d35284 | 567 | BT_INFO("HCI device and connection manager initialized"); |
1da177e4 | 568 | |
64274518 GP |
569 | err = hci_sock_init(); |
570 | if (err < 0) | |
571 | goto error; | |
572 | ||
573 | err = l2cap_init(); | |
0ed54dad | 574 | if (err < 0) |
64274518 | 575 | goto sock_err; |
64274518 GP |
576 | |
577 | err = sco_init(); | |
578 | if (err < 0) { | |
579 | l2cap_exit(); | |
580 | goto sock_err; | |
581 | } | |
1da177e4 LT |
582 | |
583 | return 0; | |
64274518 GP |
584 | |
585 | sock_err: | |
586 | hci_sock_cleanup(); | |
587 | ||
588 | error: | |
589 | sock_unregister(PF_BLUETOOTH); | |
590 | bt_sysfs_cleanup(); | |
591 | ||
592 | return err; | |
1da177e4 LT |
593 | } |
594 | ||
595 | static void __exit bt_exit(void) | |
596 | { | |
64274518 GP |
597 | |
598 | sco_exit(); | |
599 | ||
600 | l2cap_exit(); | |
601 | ||
1da177e4 LT |
602 | hci_sock_cleanup(); |
603 | ||
1da177e4 | 604 | sock_unregister(PF_BLUETOOTH); |
27d35284 MH |
605 | |
606 | bt_sysfs_cleanup(); | |
1da177e4 LT |
607 | } |
608 | ||
609 | subsys_initcall(bt_init); | |
610 | module_exit(bt_exit); | |
611 | ||
63fbd24e | 612 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); |
1da177e4 LT |
613 | MODULE_DESCRIPTION("Bluetooth Core ver " VERSION); |
614 | MODULE_VERSION(VERSION); | |
615 | MODULE_LICENSE("GPL"); | |
616 | MODULE_ALIAS_NETPROTO(PF_BLUETOOTH); |