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 | 27 | #include <linux/module.h> |
3241ad82 | 28 | #include <asm/ioctls.h> |
1da177e4 LT |
29 | |
30 | #include <net/bluetooth/bluetooth.h> | |
256a06c8 | 31 | #include <linux/proc_fs.h> |
1da177e4 | 32 | |
64274518 | 33 | #define VERSION "2.16" |
1da177e4 LT |
34 | |
35 | /* Bluetooth sockets */ | |
36 | #define BT_MAX_PROTO 8 | |
ec1b4cf7 | 37 | static const struct net_proto_family *bt_proto[BT_MAX_PROTO]; |
db7aa1c2 | 38 | static DEFINE_RWLOCK(bt_proto_lock); |
68845cb2 | 39 | |
68845cb2 | 40 | static struct lock_class_key bt_lock_key[BT_MAX_PROTO]; |
36cbd3dc | 41 | static const char *const bt_key_strings[BT_MAX_PROTO] = { |
68845cb2 DY |
42 | "sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP", |
43 | "sk_lock-AF_BLUETOOTH-BTPROTO_HCI", | |
44 | "sk_lock-AF_BLUETOOTH-BTPROTO_SCO", | |
45 | "sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM", | |
46 | "sk_lock-AF_BLUETOOTH-BTPROTO_BNEP", | |
47 | "sk_lock-AF_BLUETOOTH-BTPROTO_CMTP", | |
48 | "sk_lock-AF_BLUETOOTH-BTPROTO_HIDP", | |
49 | "sk_lock-AF_BLUETOOTH-BTPROTO_AVDTP", | |
50 | }; | |
51 | ||
db7aa1c2 | 52 | static struct lock_class_key bt_slock_key[BT_MAX_PROTO]; |
36cbd3dc | 53 | static const char *const bt_slock_key_strings[BT_MAX_PROTO] = { |
68845cb2 DY |
54 | "slock-AF_BLUETOOTH-BTPROTO_L2CAP", |
55 | "slock-AF_BLUETOOTH-BTPROTO_HCI", | |
56 | "slock-AF_BLUETOOTH-BTPROTO_SCO", | |
57 | "slock-AF_BLUETOOTH-BTPROTO_RFCOMM", | |
58 | "slock-AF_BLUETOOTH-BTPROTO_BNEP", | |
59 | "slock-AF_BLUETOOTH-BTPROTO_CMTP", | |
60 | "slock-AF_BLUETOOTH-BTPROTO_HIDP", | |
61 | "slock-AF_BLUETOOTH-BTPROTO_AVDTP", | |
62 | }; | |
db7aa1c2 | 63 | |
b5a30dda | 64 | void bt_sock_reclassify_lock(struct sock *sk, int proto) |
db7aa1c2 | 65 | { |
b5a30dda | 66 | BUG_ON(!sk); |
db7aa1c2 MH |
67 | BUG_ON(sock_owned_by_user(sk)); |
68 | ||
69 | sock_lock_init_class_and_name(sk, | |
70 | bt_slock_key_strings[proto], &bt_slock_key[proto], | |
71 | bt_key_strings[proto], &bt_lock_key[proto]); | |
72 | } | |
b5a30dda | 73 | EXPORT_SYMBOL(bt_sock_reclassify_lock); |
1da177e4 | 74 | |
ec1b4cf7 | 75 | int bt_sock_register(int proto, const struct net_proto_family *ops) |
1da177e4 | 76 | { |
74da626a MH |
77 | int err = 0; |
78 | ||
1da177e4 LT |
79 | if (proto < 0 || proto >= BT_MAX_PROTO) |
80 | return -EINVAL; | |
81 | ||
74da626a MH |
82 | write_lock(&bt_proto_lock); |
83 | ||
1da177e4 | 84 | if (bt_proto[proto]) |
74da626a MH |
85 | err = -EEXIST; |
86 | else | |
87 | bt_proto[proto] = ops; | |
88 | ||
89 | write_unlock(&bt_proto_lock); | |
1da177e4 | 90 | |
74da626a | 91 | return err; |
1da177e4 LT |
92 | } |
93 | EXPORT_SYMBOL(bt_sock_register); | |
94 | ||
95 | int bt_sock_unregister(int proto) | |
96 | { | |
74da626a MH |
97 | int err = 0; |
98 | ||
1da177e4 LT |
99 | if (proto < 0 || proto >= BT_MAX_PROTO) |
100 | return -EINVAL; | |
101 | ||
74da626a MH |
102 | write_lock(&bt_proto_lock); |
103 | ||
1da177e4 | 104 | if (!bt_proto[proto]) |
74da626a MH |
105 | err = -ENOENT; |
106 | else | |
107 | bt_proto[proto] = NULL; | |
1da177e4 | 108 | |
74da626a MH |
109 | write_unlock(&bt_proto_lock); |
110 | ||
111 | return err; | |
1da177e4 LT |
112 | } |
113 | EXPORT_SYMBOL(bt_sock_unregister); | |
114 | ||
3f378b68 EP |
115 | static int bt_sock_create(struct net *net, struct socket *sock, int proto, |
116 | int kern) | |
1da177e4 | 117 | { |
74da626a | 118 | int err; |
1da177e4 | 119 | |
1b8d7ae4 EB |
120 | if (net != &init_net) |
121 | return -EAFNOSUPPORT; | |
122 | ||
1da177e4 LT |
123 | if (proto < 0 || proto >= BT_MAX_PROTO) |
124 | return -EINVAL; | |
125 | ||
95a5afca | 126 | if (!bt_proto[proto]) |
1da177e4 | 127 | request_module("bt-proto-%d", proto); |
74da626a | 128 | |
1da177e4 | 129 | err = -EPROTONOSUPPORT; |
74da626a MH |
130 | |
131 | read_lock(&bt_proto_lock); | |
132 | ||
1da177e4 | 133 | if (bt_proto[proto] && try_module_get(bt_proto[proto]->owner)) { |
3f378b68 | 134 | err = bt_proto[proto]->create(net, sock, proto, kern); |
b5a30dda OP |
135 | if (!err) |
136 | bt_sock_reclassify_lock(sock->sk, proto); | |
1da177e4 LT |
137 | module_put(bt_proto[proto]->owner); |
138 | } | |
74da626a MH |
139 | |
140 | read_unlock(&bt_proto_lock); | |
141 | ||
8e87d142 | 142 | return err; |
1da177e4 LT |
143 | } |
144 | ||
145 | void bt_sock_link(struct bt_sock_list *l, struct sock *sk) | |
146 | { | |
94f5bfb8 | 147 | write_lock(&l->lock); |
1da177e4 | 148 | sk_add_node(sk, &l->head); |
94f5bfb8 | 149 | write_unlock(&l->lock); |
1da177e4 LT |
150 | } |
151 | EXPORT_SYMBOL(bt_sock_link); | |
152 | ||
153 | void bt_sock_unlink(struct bt_sock_list *l, struct sock *sk) | |
154 | { | |
94f5bfb8 | 155 | write_lock(&l->lock); |
1da177e4 | 156 | sk_del_node_init(sk); |
94f5bfb8 | 157 | write_unlock(&l->lock); |
1da177e4 LT |
158 | } |
159 | EXPORT_SYMBOL(bt_sock_unlink); | |
160 | ||
161 | void bt_accept_enqueue(struct sock *parent, struct sock *sk) | |
162 | { | |
163 | BT_DBG("parent %p, sk %p", parent, sk); | |
164 | ||
165 | sock_hold(sk); | |
166 | list_add_tail(&bt_sk(sk)->accept_q, &bt_sk(parent)->accept_q); | |
167 | bt_sk(sk)->parent = parent; | |
168 | parent->sk_ack_backlog++; | |
169 | } | |
170 | EXPORT_SYMBOL(bt_accept_enqueue); | |
171 | ||
172 | void bt_accept_unlink(struct sock *sk) | |
173 | { | |
174 | BT_DBG("sk %p state %d", sk, sk->sk_state); | |
175 | ||
176 | list_del_init(&bt_sk(sk)->accept_q); | |
177 | bt_sk(sk)->parent->sk_ack_backlog--; | |
178 | bt_sk(sk)->parent = NULL; | |
179 | sock_put(sk); | |
180 | } | |
181 | EXPORT_SYMBOL(bt_accept_unlink); | |
182 | ||
183 | struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock) | |
184 | { | |
185 | struct list_head *p, *n; | |
186 | struct sock *sk; | |
187 | ||
188 | BT_DBG("parent %p", parent); | |
189 | ||
190 | list_for_each_safe(p, n, &bt_sk(parent)->accept_q) { | |
191 | sk = (struct sock *) list_entry(p, struct bt_sock, accept_q); | |
192 | ||
8a154a8f | 193 | lock_sock(sk); |
1da177e4 LT |
194 | |
195 | /* FIXME: Is this check still needed */ | |
196 | if (sk->sk_state == BT_CLOSED) { | |
8a154a8f | 197 | release_sock(sk); |
1da177e4 LT |
198 | bt_accept_unlink(sk); |
199 | continue; | |
200 | } | |
201 | ||
c4f912e1 | 202 | if (sk->sk_state == BT_CONNECTED || !newsock || |
d060991f | 203 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags)) { |
1da177e4 LT |
204 | bt_accept_unlink(sk); |
205 | if (newsock) | |
206 | sock_graft(sk, newsock); | |
d37f50e1 | 207 | |
8a154a8f | 208 | release_sock(sk); |
1da177e4 LT |
209 | return sk; |
210 | } | |
211 | ||
8a154a8f | 212 | release_sock(sk); |
1da177e4 | 213 | } |
d37f50e1 | 214 | |
1da177e4 LT |
215 | return NULL; |
216 | } | |
217 | EXPORT_SYMBOL(bt_accept_dequeue); | |
218 | ||
219 | int bt_sock_recvmsg(struct kiocb *iocb, struct socket *sock, | |
c4f912e1 | 220 | struct msghdr *msg, size_t len, int flags) |
1da177e4 LT |
221 | { |
222 | int noblock = flags & MSG_DONTWAIT; | |
223 | struct sock *sk = sock->sk; | |
224 | struct sk_buff *skb; | |
225 | size_t copied; | |
226 | int err; | |
227 | ||
a418b893 | 228 | BT_DBG("sock %p sk %p len %zu", sock, sk, len); |
1da177e4 LT |
229 | |
230 | if (flags & (MSG_OOB)) | |
231 | return -EOPNOTSUPP; | |
232 | ||
5a08ecce AE |
233 | skb = skb_recv_datagram(sk, flags, noblock, &err); |
234 | if (!skb) { | |
1da177e4 LT |
235 | if (sk->sk_shutdown & RCV_SHUTDOWN) |
236 | return 0; | |
237 | return err; | |
238 | } | |
239 | ||
240 | msg->msg_namelen = 0; | |
241 | ||
242 | copied = skb->len; | |
243 | if (len < copied) { | |
244 | msg->msg_flags |= MSG_TRUNC; | |
245 | copied = len; | |
246 | } | |
247 | ||
badff6d0 | 248 | skb_reset_transport_header(skb); |
1da177e4 | 249 | err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied); |
3241ad82 | 250 | if (err == 0) |
3b885787 | 251 | sock_recv_ts_and_drops(msg, sk, skb); |
1da177e4 LT |
252 | |
253 | skb_free_datagram(sk, skb); | |
254 | ||
255 | return err ? : copied; | |
256 | } | |
257 | EXPORT_SYMBOL(bt_sock_recvmsg); | |
258 | ||
796c86ee MM |
259 | static long bt_sock_data_wait(struct sock *sk, long timeo) |
260 | { | |
261 | DECLARE_WAITQUEUE(wait, current); | |
262 | ||
263 | add_wait_queue(sk_sleep(sk), &wait); | |
264 | for (;;) { | |
265 | set_current_state(TASK_INTERRUPTIBLE); | |
266 | ||
267 | if (!skb_queue_empty(&sk->sk_receive_queue)) | |
268 | break; | |
269 | ||
270 | if (sk->sk_err || (sk->sk_shutdown & RCV_SHUTDOWN)) | |
271 | break; | |
272 | ||
273 | if (signal_pending(current) || !timeo) | |
274 | break; | |
275 | ||
276 | set_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags); | |
277 | release_sock(sk); | |
278 | timeo = schedule_timeout(timeo); | |
279 | lock_sock(sk); | |
280 | clear_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags); | |
281 | } | |
282 | ||
283 | __set_current_state(TASK_RUNNING); | |
284 | remove_wait_queue(sk_sleep(sk), &wait); | |
285 | return timeo; | |
286 | } | |
287 | ||
288 | int bt_sock_stream_recvmsg(struct kiocb *iocb, struct socket *sock, | |
289 | struct msghdr *msg, size_t size, int flags) | |
290 | { | |
291 | struct sock *sk = sock->sk; | |
292 | int err = 0; | |
293 | size_t target, copied = 0; | |
294 | long timeo; | |
295 | ||
296 | if (flags & MSG_OOB) | |
297 | return -EOPNOTSUPP; | |
298 | ||
299 | msg->msg_namelen = 0; | |
300 | ||
301 | BT_DBG("sk %p size %zu", sk, size); | |
302 | ||
303 | lock_sock(sk); | |
304 | ||
305 | target = sock_rcvlowat(sk, flags & MSG_WAITALL, size); | |
306 | timeo = sock_rcvtimeo(sk, flags & MSG_DONTWAIT); | |
307 | ||
308 | do { | |
309 | struct sk_buff *skb; | |
310 | int chunk; | |
311 | ||
312 | skb = skb_dequeue(&sk->sk_receive_queue); | |
313 | if (!skb) { | |
314 | if (copied >= target) | |
315 | break; | |
316 | ||
5a08ecce AE |
317 | err = sock_error(sk); |
318 | if (err) | |
796c86ee MM |
319 | break; |
320 | if (sk->sk_shutdown & RCV_SHUTDOWN) | |
321 | break; | |
322 | ||
323 | err = -EAGAIN; | |
324 | if (!timeo) | |
325 | break; | |
326 | ||
327 | timeo = bt_sock_data_wait(sk, timeo); | |
328 | ||
329 | if (signal_pending(current)) { | |
330 | err = sock_intr_errno(timeo); | |
331 | goto out; | |
332 | } | |
333 | continue; | |
334 | } | |
335 | ||
336 | chunk = min_t(unsigned int, skb->len, size); | |
5b668eb3 | 337 | if (skb_copy_datagram_iovec(skb, 0, msg->msg_iov, chunk)) { |
796c86ee MM |
338 | skb_queue_head(&sk->sk_receive_queue, skb); |
339 | if (!copied) | |
340 | copied = -EFAULT; | |
341 | break; | |
342 | } | |
343 | copied += chunk; | |
344 | size -= chunk; | |
345 | ||
346 | sock_recv_ts_and_drops(msg, sk, skb); | |
347 | ||
348 | if (!(flags & MSG_PEEK)) { | |
5b668eb3 MM |
349 | int skb_len = skb_headlen(skb); |
350 | ||
351 | if (chunk <= skb_len) { | |
352 | __skb_pull(skb, chunk); | |
353 | } else { | |
354 | struct sk_buff *frag; | |
355 | ||
356 | __skb_pull(skb, skb_len); | |
357 | chunk -= skb_len; | |
358 | ||
359 | skb_walk_frags(skb, frag) { | |
360 | if (chunk <= frag->len) { | |
361 | /* Pulling partial data */ | |
362 | skb->len -= chunk; | |
363 | skb->data_len -= chunk; | |
364 | __skb_pull(frag, chunk); | |
365 | break; | |
366 | } else if (frag->len) { | |
367 | /* Pulling all frag data */ | |
368 | chunk -= frag->len; | |
369 | skb->len -= frag->len; | |
370 | skb->data_len -= frag->len; | |
371 | __skb_pull(frag, frag->len); | |
372 | } | |
373 | } | |
374 | } | |
375 | ||
796c86ee MM |
376 | if (skb->len) { |
377 | skb_queue_head(&sk->sk_receive_queue, skb); | |
378 | break; | |
379 | } | |
380 | kfree_skb(skb); | |
381 | ||
382 | } else { | |
383 | /* put message back and return */ | |
384 | skb_queue_head(&sk->sk_receive_queue, skb); | |
385 | break; | |
386 | } | |
387 | } while (size); | |
388 | ||
389 | out: | |
390 | release_sock(sk); | |
391 | return copied ? : err; | |
392 | } | |
393 | EXPORT_SYMBOL(bt_sock_stream_recvmsg); | |
394 | ||
1da177e4 LT |
395 | static inline unsigned int bt_accept_poll(struct sock *parent) |
396 | { | |
397 | struct list_head *p, *n; | |
398 | struct sock *sk; | |
399 | ||
400 | list_for_each_safe(p, n, &bt_sk(parent)->accept_q) { | |
401 | sk = (struct sock *) list_entry(p, struct bt_sock, accept_q); | |
d5f2d2be | 402 | if (sk->sk_state == BT_CONNECTED || |
c5daa683 GP |
403 | (test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags) && |
404 | sk->sk_state == BT_CONNECT2)) | |
1da177e4 LT |
405 | return POLLIN | POLLRDNORM; |
406 | } | |
407 | ||
408 | return 0; | |
409 | } | |
410 | ||
8fc9ced3 GP |
411 | unsigned int bt_sock_poll(struct file *file, struct socket *sock, |
412 | poll_table *wait) | |
1da177e4 LT |
413 | { |
414 | struct sock *sk = sock->sk; | |
415 | unsigned int mask = 0; | |
416 | ||
417 | BT_DBG("sock %p, sk %p", sock, sk); | |
418 | ||
aa395145 | 419 | poll_wait(file, sk_sleep(sk), wait); |
1da177e4 LT |
420 | |
421 | if (sk->sk_state == BT_LISTEN) | |
422 | return bt_accept_poll(sk); | |
423 | ||
424 | if (sk->sk_err || !skb_queue_empty(&sk->sk_error_queue)) | |
425 | mask |= POLLERR; | |
426 | ||
f348d70a | 427 | if (sk->sk_shutdown & RCV_SHUTDOWN) |
db40980f | 428 | mask |= POLLRDHUP | POLLIN | POLLRDNORM; |
f348d70a | 429 | |
1da177e4 LT |
430 | if (sk->sk_shutdown == SHUTDOWN_MASK) |
431 | mask |= POLLHUP; | |
432 | ||
db40980f | 433 | if (!skb_queue_empty(&sk->sk_receive_queue)) |
1da177e4 LT |
434 | mask |= POLLIN | POLLRDNORM; |
435 | ||
436 | if (sk->sk_state == BT_CLOSED) | |
437 | mask |= POLLHUP; | |
438 | ||
439 | if (sk->sk_state == BT_CONNECT || | |
440 | sk->sk_state == BT_CONNECT2 || | |
441 | sk->sk_state == BT_CONFIG) | |
442 | return mask; | |
443 | ||
c5daa683 | 444 | if (!test_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags) && sock_writeable(sk)) |
1da177e4 LT |
445 | mask |= POLLOUT | POLLWRNORM | POLLWRBAND; |
446 | else | |
447 | set_bit(SOCK_ASYNC_NOSPACE, &sk->sk_socket->flags); | |
448 | ||
449 | return mask; | |
450 | } | |
451 | EXPORT_SYMBOL(bt_sock_poll); | |
452 | ||
3241ad82 MH |
453 | int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) |
454 | { | |
455 | struct sock *sk = sock->sk; | |
43cbeee9 MH |
456 | struct sk_buff *skb; |
457 | long amount; | |
3241ad82 MH |
458 | int err; |
459 | ||
460 | BT_DBG("sk %p cmd %x arg %lx", sk, cmd, arg); | |
461 | ||
462 | switch (cmd) { | |
43cbeee9 MH |
463 | case TIOCOUTQ: |
464 | if (sk->sk_state == BT_LISTEN) | |
465 | return -EINVAL; | |
466 | ||
31e6d363 | 467 | amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk); |
43cbeee9 MH |
468 | if (amount < 0) |
469 | amount = 0; | |
470 | err = put_user(amount, (int __user *) arg); | |
471 | break; | |
472 | ||
473 | case TIOCINQ: | |
474 | if (sk->sk_state == BT_LISTEN) | |
475 | return -EINVAL; | |
476 | ||
477 | lock_sock(sk); | |
478 | skb = skb_peek(&sk->sk_receive_queue); | |
479 | amount = skb ? skb->len : 0; | |
480 | release_sock(sk); | |
481 | err = put_user(amount, (int __user *) arg); | |
482 | break; | |
483 | ||
3241ad82 MH |
484 | case SIOCGSTAMP: |
485 | err = sock_get_timestamp(sk, (struct timeval __user *) arg); | |
486 | break; | |
487 | ||
488 | case SIOCGSTAMPNS: | |
489 | err = sock_get_timestampns(sk, (struct timespec __user *) arg); | |
490 | break; | |
491 | ||
492 | default: | |
493 | err = -ENOIOCTLCMD; | |
494 | break; | |
495 | } | |
496 | ||
497 | return err; | |
498 | } | |
499 | EXPORT_SYMBOL(bt_sock_ioctl); | |
500 | ||
1da177e4 LT |
501 | int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo) |
502 | { | |
503 | DECLARE_WAITQUEUE(wait, current); | |
504 | int err = 0; | |
505 | ||
506 | BT_DBG("sk %p", sk); | |
507 | ||
aa395145 | 508 | add_wait_queue(sk_sleep(sk), &wait); |
9be4e3fb | 509 | set_current_state(TASK_INTERRUPTIBLE); |
1da177e4 | 510 | while (sk->sk_state != state) { |
1da177e4 | 511 | if (!timeo) { |
b4c612a4 | 512 | err = -EINPROGRESS; |
1da177e4 LT |
513 | break; |
514 | } | |
515 | ||
516 | if (signal_pending(current)) { | |
517 | err = sock_intr_errno(timeo); | |
518 | break; | |
519 | } | |
520 | ||
521 | release_sock(sk); | |
522 | timeo = schedule_timeout(timeo); | |
523 | lock_sock(sk); | |
9be4e3fb | 524 | set_current_state(TASK_INTERRUPTIBLE); |
1da177e4 | 525 | |
c1cbe4b7 BL |
526 | err = sock_error(sk); |
527 | if (err) | |
1da177e4 | 528 | break; |
1da177e4 | 529 | } |
9be4e3fb | 530 | __set_current_state(TASK_RUNNING); |
aa395145 | 531 | remove_wait_queue(sk_sleep(sk), &wait); |
1da177e4 LT |
532 | return err; |
533 | } | |
534 | EXPORT_SYMBOL(bt_sock_wait_state); | |
535 | ||
256a06c8 MY |
536 | #ifdef CONFIG_PROC_FS |
537 | struct bt_seq_state { | |
538 | struct bt_sock_list *l; | |
539 | }; | |
540 | ||
541 | static void *bt_seq_start(struct seq_file *seq, loff_t *pos) | |
542 | __acquires(seq->private->l->lock) | |
543 | { | |
544 | struct bt_seq_state *s = seq->private; | |
545 | struct bt_sock_list *l = s->l; | |
546 | ||
547 | read_lock(&l->lock); | |
548 | return seq_hlist_start_head(&l->head, *pos); | |
549 | } | |
550 | ||
551 | static void *bt_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
552 | { | |
553 | struct bt_seq_state *s = seq->private; | |
554 | struct bt_sock_list *l = s->l; | |
555 | ||
556 | return seq_hlist_next(v, &l->head, pos); | |
557 | } | |
558 | ||
559 | static void bt_seq_stop(struct seq_file *seq, void *v) | |
560 | __releases(seq->private->l->lock) | |
561 | { | |
562 | struct bt_seq_state *s = seq->private; | |
563 | struct bt_sock_list *l = s->l; | |
564 | ||
565 | read_unlock(&l->lock); | |
566 | } | |
567 | ||
568 | static int bt_seq_show(struct seq_file *seq, void *v) | |
569 | { | |
256a06c8 MY |
570 | struct bt_seq_state *s = seq->private; |
571 | struct bt_sock_list *l = s->l; | |
256a06c8 MY |
572 | |
573 | if (v == SEQ_START_TOKEN) { | |
574 | seq_puts(seq ,"sk RefCnt Rmem Wmem User Inode Src Dst Parent"); | |
575 | ||
576 | if (l->custom_seq_show) { | |
577 | seq_putc(seq, ' '); | |
578 | l->custom_seq_show(seq, v); | |
579 | } | |
580 | ||
581 | seq_putc(seq, '\n'); | |
582 | } else { | |
09d5d4aa AE |
583 | struct sock *sk = sk_entry(v); |
584 | struct bt_sock *bt = bt_sk(sk); | |
256a06c8 | 585 | |
7028a886 AE |
586 | seq_printf(seq, |
587 | "%pK %-6d %-6u %-6u %-6u %-6lu %pMR %pMR %-6lu", | |
256a06c8 MY |
588 | sk, |
589 | atomic_read(&sk->sk_refcnt), | |
590 | sk_rmem_alloc_get(sk), | |
591 | sk_wmem_alloc_get(sk), | |
1bbb3095 | 592 | from_kuid(seq_user_ns(seq), sock_i_uid(sk)), |
256a06c8 | 593 | sock_i_ino(sk), |
7028a886 AE |
594 | &bt->src, |
595 | &bt->dst, | |
256a06c8 MY |
596 | bt->parent? sock_i_ino(bt->parent): 0LU); |
597 | ||
598 | if (l->custom_seq_show) { | |
599 | seq_putc(seq, ' '); | |
600 | l->custom_seq_show(seq, v); | |
601 | } | |
602 | ||
603 | seq_putc(seq, '\n'); | |
604 | } | |
605 | return 0; | |
606 | } | |
607 | ||
608 | static struct seq_operations bt_seq_ops = { | |
609 | .start = bt_seq_start, | |
610 | .next = bt_seq_next, | |
611 | .stop = bt_seq_stop, | |
612 | .show = bt_seq_show, | |
613 | }; | |
614 | ||
615 | static int bt_seq_open(struct inode *inode, struct file *file) | |
616 | { | |
617 | struct bt_sock_list *sk_list; | |
618 | struct bt_seq_state *s; | |
619 | ||
620 | sk_list = PDE(inode)->data; | |
621 | s = __seq_open_private(file, &bt_seq_ops, | |
622 | sizeof(struct bt_seq_state)); | |
31f47073 | 623 | if (!s) |
256a06c8 MY |
624 | return -ENOMEM; |
625 | ||
626 | s->l = sk_list; | |
627 | return 0; | |
628 | } | |
629 | ||
630 | int bt_procfs_init(struct module* module, struct net *net, const char *name, | |
631 | struct bt_sock_list* sk_list, | |
632 | int (* seq_show)(struct seq_file *, void *)) | |
633 | { | |
634 | struct proc_dir_entry * pde; | |
635 | ||
636 | sk_list->custom_seq_show = seq_show; | |
637 | ||
638 | sk_list->fops.owner = module; | |
639 | sk_list->fops.open = bt_seq_open; | |
640 | sk_list->fops.read = seq_read; | |
641 | sk_list->fops.llseek = seq_lseek; | |
642 | sk_list->fops.release = seq_release_private; | |
643 | ||
d4beaa66 | 644 | pde = proc_create(name, 0, net->proc_net, &sk_list->fops); |
31f47073 | 645 | if (!pde) |
256a06c8 MY |
646 | return -ENOMEM; |
647 | ||
648 | pde->data = sk_list; | |
649 | ||
650 | return 0; | |
651 | } | |
652 | ||
653 | void bt_procfs_cleanup(struct net *net, const char *name) | |
654 | { | |
ece31ffd | 655 | remove_proc_entry(name, net->proc_net); |
256a06c8 MY |
656 | } |
657 | #else | |
658 | int bt_procfs_init(struct module* module, struct net *net, const char *name, | |
659 | struct bt_sock_list* sk_list, | |
660 | int (* seq_show)(struct seq_file *, void *)) | |
661 | { | |
662 | return 0; | |
663 | } | |
664 | ||
665 | void bt_procfs_cleanup(struct net *net, const char *name) | |
666 | { | |
667 | } | |
668 | #endif | |
669 | EXPORT_SYMBOL(bt_procfs_init); | |
670 | EXPORT_SYMBOL(bt_procfs_cleanup); | |
671 | ||
1da177e4 LT |
672 | static struct net_proto_family bt_sock_family_ops = { |
673 | .owner = THIS_MODULE, | |
674 | .family = PF_BLUETOOTH, | |
675 | .create = bt_sock_create, | |
676 | }; | |
677 | ||
1da177e4 LT |
678 | static int __init bt_init(void) |
679 | { | |
27d35284 MH |
680 | int err; |
681 | ||
1da177e4 LT |
682 | BT_INFO("Core ver %s", VERSION); |
683 | ||
27d35284 MH |
684 | err = bt_sysfs_init(); |
685 | if (err < 0) | |
686 | return err; | |
1da177e4 | 687 | |
27d35284 MH |
688 | err = sock_register(&bt_sock_family_ops); |
689 | if (err < 0) { | |
690 | bt_sysfs_cleanup(); | |
691 | return err; | |
692 | } | |
1da177e4 | 693 | |
27d35284 | 694 | BT_INFO("HCI device and connection manager initialized"); |
1da177e4 | 695 | |
64274518 GP |
696 | err = hci_sock_init(); |
697 | if (err < 0) | |
698 | goto error; | |
699 | ||
700 | err = l2cap_init(); | |
0ed54dad | 701 | if (err < 0) |
64274518 | 702 | goto sock_err; |
64274518 GP |
703 | |
704 | err = sco_init(); | |
705 | if (err < 0) { | |
706 | l2cap_exit(); | |
707 | goto sock_err; | |
708 | } | |
1da177e4 LT |
709 | |
710 | return 0; | |
64274518 GP |
711 | |
712 | sock_err: | |
713 | hci_sock_cleanup(); | |
714 | ||
715 | error: | |
716 | sock_unregister(PF_BLUETOOTH); | |
717 | bt_sysfs_cleanup(); | |
718 | ||
719 | return err; | |
1da177e4 LT |
720 | } |
721 | ||
722 | static void __exit bt_exit(void) | |
723 | { | |
64274518 GP |
724 | |
725 | sco_exit(); | |
726 | ||
727 | l2cap_exit(); | |
728 | ||
1da177e4 LT |
729 | hci_sock_cleanup(); |
730 | ||
1da177e4 | 731 | sock_unregister(PF_BLUETOOTH); |
27d35284 MH |
732 | |
733 | bt_sysfs_cleanup(); | |
1da177e4 LT |
734 | } |
735 | ||
736 | subsys_initcall(bt_init); | |
737 | module_exit(bt_exit); | |
738 | ||
63fbd24e | 739 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); |
1da177e4 LT |
740 | MODULE_DESCRIPTION("Bluetooth Core ver " VERSION); |
741 | MODULE_VERSION(VERSION); | |
742 | MODULE_LICENSE("GPL"); | |
743 | MODULE_ALIAS_NETPROTO(PF_BLUETOOTH); |