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 | ||
be9f97f0 | 95 | void bt_sock_unregister(int proto) |
1da177e4 LT |
96 | { |
97 | if (proto < 0 || proto >= BT_MAX_PROTO) | |
be9f97f0 | 98 | return; |
1da177e4 | 99 | |
74da626a | 100 | write_lock(&bt_proto_lock); |
be9f97f0 | 101 | bt_proto[proto] = NULL; |
74da626a | 102 | write_unlock(&bt_proto_lock); |
1da177e4 LT |
103 | } |
104 | EXPORT_SYMBOL(bt_sock_unregister); | |
105 | ||
3f378b68 EP |
106 | static int bt_sock_create(struct net *net, struct socket *sock, int proto, |
107 | int kern) | |
1da177e4 | 108 | { |
74da626a | 109 | int err; |
1da177e4 | 110 | |
1b8d7ae4 EB |
111 | if (net != &init_net) |
112 | return -EAFNOSUPPORT; | |
113 | ||
1da177e4 LT |
114 | if (proto < 0 || proto >= BT_MAX_PROTO) |
115 | return -EINVAL; | |
116 | ||
95a5afca | 117 | if (!bt_proto[proto]) |
1da177e4 | 118 | request_module("bt-proto-%d", proto); |
74da626a | 119 | |
1da177e4 | 120 | err = -EPROTONOSUPPORT; |
74da626a MH |
121 | |
122 | read_lock(&bt_proto_lock); | |
123 | ||
1da177e4 | 124 | if (bt_proto[proto] && try_module_get(bt_proto[proto]->owner)) { |
3f378b68 | 125 | err = bt_proto[proto]->create(net, sock, proto, kern); |
b5a30dda OP |
126 | if (!err) |
127 | bt_sock_reclassify_lock(sock->sk, proto); | |
1da177e4 LT |
128 | module_put(bt_proto[proto]->owner); |
129 | } | |
74da626a MH |
130 | |
131 | read_unlock(&bt_proto_lock); | |
132 | ||
8e87d142 | 133 | return err; |
1da177e4 LT |
134 | } |
135 | ||
136 | void bt_sock_link(struct bt_sock_list *l, struct sock *sk) | |
137 | { | |
94f5bfb8 | 138 | write_lock(&l->lock); |
1da177e4 | 139 | sk_add_node(sk, &l->head); |
94f5bfb8 | 140 | write_unlock(&l->lock); |
1da177e4 LT |
141 | } |
142 | EXPORT_SYMBOL(bt_sock_link); | |
143 | ||
144 | void bt_sock_unlink(struct bt_sock_list *l, struct sock *sk) | |
145 | { | |
94f5bfb8 | 146 | write_lock(&l->lock); |
1da177e4 | 147 | sk_del_node_init(sk); |
94f5bfb8 | 148 | write_unlock(&l->lock); |
1da177e4 LT |
149 | } |
150 | EXPORT_SYMBOL(bt_sock_unlink); | |
151 | ||
152 | void bt_accept_enqueue(struct sock *parent, struct sock *sk) | |
153 | { | |
154 | BT_DBG("parent %p, sk %p", parent, sk); | |
155 | ||
156 | sock_hold(sk); | |
157 | list_add_tail(&bt_sk(sk)->accept_q, &bt_sk(parent)->accept_q); | |
158 | bt_sk(sk)->parent = parent; | |
159 | parent->sk_ack_backlog++; | |
160 | } | |
161 | EXPORT_SYMBOL(bt_accept_enqueue); | |
162 | ||
163 | void bt_accept_unlink(struct sock *sk) | |
164 | { | |
165 | BT_DBG("sk %p state %d", sk, sk->sk_state); | |
166 | ||
167 | list_del_init(&bt_sk(sk)->accept_q); | |
168 | bt_sk(sk)->parent->sk_ack_backlog--; | |
169 | bt_sk(sk)->parent = NULL; | |
170 | sock_put(sk); | |
171 | } | |
172 | EXPORT_SYMBOL(bt_accept_unlink); | |
173 | ||
174 | struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock) | |
175 | { | |
176 | struct list_head *p, *n; | |
177 | struct sock *sk; | |
178 | ||
179 | BT_DBG("parent %p", parent); | |
180 | ||
181 | list_for_each_safe(p, n, &bt_sk(parent)->accept_q) { | |
182 | sk = (struct sock *) list_entry(p, struct bt_sock, accept_q); | |
183 | ||
8a154a8f | 184 | lock_sock(sk); |
1da177e4 LT |
185 | |
186 | /* FIXME: Is this check still needed */ | |
187 | if (sk->sk_state == BT_CLOSED) { | |
8a154a8f | 188 | release_sock(sk); |
1da177e4 LT |
189 | bt_accept_unlink(sk); |
190 | continue; | |
191 | } | |
192 | ||
c4f912e1 | 193 | if (sk->sk_state == BT_CONNECTED || !newsock || |
d060991f | 194 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags)) { |
1da177e4 LT |
195 | bt_accept_unlink(sk); |
196 | if (newsock) | |
197 | sock_graft(sk, newsock); | |
d37f50e1 | 198 | |
8a154a8f | 199 | release_sock(sk); |
1da177e4 LT |
200 | return sk; |
201 | } | |
202 | ||
8a154a8f | 203 | release_sock(sk); |
1da177e4 | 204 | } |
d37f50e1 | 205 | |
1da177e4 LT |
206 | return NULL; |
207 | } | |
208 | EXPORT_SYMBOL(bt_accept_dequeue); | |
209 | ||
210 | int bt_sock_recvmsg(struct kiocb *iocb, struct socket *sock, | |
c4f912e1 | 211 | struct msghdr *msg, size_t len, int flags) |
1da177e4 LT |
212 | { |
213 | int noblock = flags & MSG_DONTWAIT; | |
214 | struct sock *sk = sock->sk; | |
215 | struct sk_buff *skb; | |
216 | size_t copied; | |
217 | int err; | |
218 | ||
a418b893 | 219 | BT_DBG("sock %p sk %p len %zu", sock, sk, len); |
1da177e4 LT |
220 | |
221 | if (flags & (MSG_OOB)) | |
222 | return -EOPNOTSUPP; | |
223 | ||
4683f42f MK |
224 | msg->msg_namelen = 0; |
225 | ||
5a08ecce AE |
226 | skb = skb_recv_datagram(sk, flags, noblock, &err); |
227 | if (!skb) { | |
1da177e4 LT |
228 | if (sk->sk_shutdown & RCV_SHUTDOWN) |
229 | return 0; | |
230 | return err; | |
231 | } | |
232 | ||
1da177e4 LT |
233 | copied = skb->len; |
234 | if (len < copied) { | |
235 | msg->msg_flags |= MSG_TRUNC; | |
236 | copied = len; | |
237 | } | |
238 | ||
badff6d0 | 239 | skb_reset_transport_header(skb); |
1da177e4 | 240 | err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied); |
3241ad82 | 241 | if (err == 0) |
3b885787 | 242 | sock_recv_ts_and_drops(msg, sk, skb); |
1da177e4 LT |
243 | |
244 | skb_free_datagram(sk, skb); | |
245 | ||
246 | return err ? : copied; | |
247 | } | |
248 | EXPORT_SYMBOL(bt_sock_recvmsg); | |
249 | ||
796c86ee MM |
250 | static long bt_sock_data_wait(struct sock *sk, long timeo) |
251 | { | |
252 | DECLARE_WAITQUEUE(wait, current); | |
253 | ||
254 | add_wait_queue(sk_sleep(sk), &wait); | |
255 | for (;;) { | |
256 | set_current_state(TASK_INTERRUPTIBLE); | |
257 | ||
258 | if (!skb_queue_empty(&sk->sk_receive_queue)) | |
259 | break; | |
260 | ||
261 | if (sk->sk_err || (sk->sk_shutdown & RCV_SHUTDOWN)) | |
262 | break; | |
263 | ||
264 | if (signal_pending(current) || !timeo) | |
265 | break; | |
266 | ||
267 | set_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags); | |
268 | release_sock(sk); | |
269 | timeo = schedule_timeout(timeo); | |
270 | lock_sock(sk); | |
271 | clear_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags); | |
272 | } | |
273 | ||
274 | __set_current_state(TASK_RUNNING); | |
275 | remove_wait_queue(sk_sleep(sk), &wait); | |
276 | return timeo; | |
277 | } | |
278 | ||
279 | int bt_sock_stream_recvmsg(struct kiocb *iocb, struct socket *sock, | |
280 | struct msghdr *msg, size_t size, int flags) | |
281 | { | |
282 | struct sock *sk = sock->sk; | |
283 | int err = 0; | |
284 | size_t target, copied = 0; | |
285 | long timeo; | |
286 | ||
287 | if (flags & MSG_OOB) | |
288 | return -EOPNOTSUPP; | |
289 | ||
290 | msg->msg_namelen = 0; | |
291 | ||
292 | BT_DBG("sk %p size %zu", sk, size); | |
293 | ||
294 | lock_sock(sk); | |
295 | ||
296 | target = sock_rcvlowat(sk, flags & MSG_WAITALL, size); | |
297 | timeo = sock_rcvtimeo(sk, flags & MSG_DONTWAIT); | |
298 | ||
299 | do { | |
300 | struct sk_buff *skb; | |
301 | int chunk; | |
302 | ||
303 | skb = skb_dequeue(&sk->sk_receive_queue); | |
304 | if (!skb) { | |
305 | if (copied >= target) | |
306 | break; | |
307 | ||
5a08ecce AE |
308 | err = sock_error(sk); |
309 | if (err) | |
796c86ee MM |
310 | break; |
311 | if (sk->sk_shutdown & RCV_SHUTDOWN) | |
312 | break; | |
313 | ||
314 | err = -EAGAIN; | |
315 | if (!timeo) | |
316 | break; | |
317 | ||
318 | timeo = bt_sock_data_wait(sk, timeo); | |
319 | ||
320 | if (signal_pending(current)) { | |
321 | err = sock_intr_errno(timeo); | |
322 | goto out; | |
323 | } | |
324 | continue; | |
325 | } | |
326 | ||
327 | chunk = min_t(unsigned int, skb->len, size); | |
5b668eb3 | 328 | if (skb_copy_datagram_iovec(skb, 0, msg->msg_iov, chunk)) { |
796c86ee MM |
329 | skb_queue_head(&sk->sk_receive_queue, skb); |
330 | if (!copied) | |
331 | copied = -EFAULT; | |
332 | break; | |
333 | } | |
334 | copied += chunk; | |
335 | size -= chunk; | |
336 | ||
337 | sock_recv_ts_and_drops(msg, sk, skb); | |
338 | ||
339 | if (!(flags & MSG_PEEK)) { | |
5b668eb3 MM |
340 | int skb_len = skb_headlen(skb); |
341 | ||
342 | if (chunk <= skb_len) { | |
343 | __skb_pull(skb, chunk); | |
344 | } else { | |
345 | struct sk_buff *frag; | |
346 | ||
347 | __skb_pull(skb, skb_len); | |
348 | chunk -= skb_len; | |
349 | ||
350 | skb_walk_frags(skb, frag) { | |
351 | if (chunk <= frag->len) { | |
352 | /* Pulling partial data */ | |
353 | skb->len -= chunk; | |
354 | skb->data_len -= chunk; | |
355 | __skb_pull(frag, chunk); | |
356 | break; | |
357 | } else if (frag->len) { | |
358 | /* Pulling all frag data */ | |
359 | chunk -= frag->len; | |
360 | skb->len -= frag->len; | |
361 | skb->data_len -= frag->len; | |
362 | __skb_pull(frag, frag->len); | |
363 | } | |
364 | } | |
365 | } | |
366 | ||
796c86ee MM |
367 | if (skb->len) { |
368 | skb_queue_head(&sk->sk_receive_queue, skb); | |
369 | break; | |
370 | } | |
371 | kfree_skb(skb); | |
372 | ||
373 | } else { | |
374 | /* put message back and return */ | |
375 | skb_queue_head(&sk->sk_receive_queue, skb); | |
376 | break; | |
377 | } | |
378 | } while (size); | |
379 | ||
380 | out: | |
381 | release_sock(sk); | |
382 | return copied ? : err; | |
383 | } | |
384 | EXPORT_SYMBOL(bt_sock_stream_recvmsg); | |
385 | ||
1da177e4 LT |
386 | static inline unsigned int bt_accept_poll(struct sock *parent) |
387 | { | |
388 | struct list_head *p, *n; | |
389 | struct sock *sk; | |
390 | ||
391 | list_for_each_safe(p, n, &bt_sk(parent)->accept_q) { | |
392 | sk = (struct sock *) list_entry(p, struct bt_sock, accept_q); | |
d5f2d2be | 393 | if (sk->sk_state == BT_CONNECTED || |
c5daa683 GP |
394 | (test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags) && |
395 | sk->sk_state == BT_CONNECT2)) | |
1da177e4 LT |
396 | return POLLIN | POLLRDNORM; |
397 | } | |
398 | ||
399 | return 0; | |
400 | } | |
401 | ||
8fc9ced3 GP |
402 | unsigned int bt_sock_poll(struct file *file, struct socket *sock, |
403 | poll_table *wait) | |
1da177e4 LT |
404 | { |
405 | struct sock *sk = sock->sk; | |
406 | unsigned int mask = 0; | |
407 | ||
408 | BT_DBG("sock %p, sk %p", sock, sk); | |
409 | ||
aa395145 | 410 | poll_wait(file, sk_sleep(sk), wait); |
1da177e4 LT |
411 | |
412 | if (sk->sk_state == BT_LISTEN) | |
413 | return bt_accept_poll(sk); | |
414 | ||
415 | if (sk->sk_err || !skb_queue_empty(&sk->sk_error_queue)) | |
7d4c04fc | 416 | mask |= POLLERR | |
8facd5fb | 417 | (sock_flag(sk, SOCK_SELECT_ERR_QUEUE) ? POLLPRI : 0); |
1da177e4 | 418 | |
f348d70a | 419 | if (sk->sk_shutdown & RCV_SHUTDOWN) |
db40980f | 420 | mask |= POLLRDHUP | POLLIN | POLLRDNORM; |
f348d70a | 421 | |
1da177e4 LT |
422 | if (sk->sk_shutdown == SHUTDOWN_MASK) |
423 | mask |= POLLHUP; | |
424 | ||
db40980f | 425 | if (!skb_queue_empty(&sk->sk_receive_queue)) |
1da177e4 LT |
426 | mask |= POLLIN | POLLRDNORM; |
427 | ||
428 | if (sk->sk_state == BT_CLOSED) | |
429 | mask |= POLLHUP; | |
430 | ||
431 | if (sk->sk_state == BT_CONNECT || | |
432 | sk->sk_state == BT_CONNECT2 || | |
433 | sk->sk_state == BT_CONFIG) | |
434 | return mask; | |
435 | ||
c5daa683 | 436 | if (!test_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags) && sock_writeable(sk)) |
1da177e4 LT |
437 | mask |= POLLOUT | POLLWRNORM | POLLWRBAND; |
438 | else | |
439 | set_bit(SOCK_ASYNC_NOSPACE, &sk->sk_socket->flags); | |
440 | ||
441 | return mask; | |
442 | } | |
443 | EXPORT_SYMBOL(bt_sock_poll); | |
444 | ||
3241ad82 MH |
445 | int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) |
446 | { | |
447 | struct sock *sk = sock->sk; | |
43cbeee9 MH |
448 | struct sk_buff *skb; |
449 | long amount; | |
3241ad82 MH |
450 | int err; |
451 | ||
452 | BT_DBG("sk %p cmd %x arg %lx", sk, cmd, arg); | |
453 | ||
454 | switch (cmd) { | |
43cbeee9 MH |
455 | case TIOCOUTQ: |
456 | if (sk->sk_state == BT_LISTEN) | |
457 | return -EINVAL; | |
458 | ||
31e6d363 | 459 | amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk); |
43cbeee9 MH |
460 | if (amount < 0) |
461 | amount = 0; | |
462 | err = put_user(amount, (int __user *) arg); | |
463 | break; | |
464 | ||
465 | case TIOCINQ: | |
466 | if (sk->sk_state == BT_LISTEN) | |
467 | return -EINVAL; | |
468 | ||
469 | lock_sock(sk); | |
470 | skb = skb_peek(&sk->sk_receive_queue); | |
471 | amount = skb ? skb->len : 0; | |
472 | release_sock(sk); | |
473 | err = put_user(amount, (int __user *) arg); | |
474 | break; | |
475 | ||
3241ad82 MH |
476 | case SIOCGSTAMP: |
477 | err = sock_get_timestamp(sk, (struct timeval __user *) arg); | |
478 | break; | |
479 | ||
480 | case SIOCGSTAMPNS: | |
481 | err = sock_get_timestampns(sk, (struct timespec __user *) arg); | |
482 | break; | |
483 | ||
484 | default: | |
485 | err = -ENOIOCTLCMD; | |
486 | break; | |
487 | } | |
488 | ||
489 | return err; | |
490 | } | |
491 | EXPORT_SYMBOL(bt_sock_ioctl); | |
492 | ||
1da177e4 LT |
493 | int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo) |
494 | { | |
495 | DECLARE_WAITQUEUE(wait, current); | |
496 | int err = 0; | |
497 | ||
498 | BT_DBG("sk %p", sk); | |
499 | ||
aa395145 | 500 | add_wait_queue(sk_sleep(sk), &wait); |
9be4e3fb | 501 | set_current_state(TASK_INTERRUPTIBLE); |
1da177e4 | 502 | while (sk->sk_state != state) { |
1da177e4 | 503 | if (!timeo) { |
b4c612a4 | 504 | err = -EINPROGRESS; |
1da177e4 LT |
505 | break; |
506 | } | |
507 | ||
508 | if (signal_pending(current)) { | |
509 | err = sock_intr_errno(timeo); | |
510 | break; | |
511 | } | |
512 | ||
513 | release_sock(sk); | |
514 | timeo = schedule_timeout(timeo); | |
515 | lock_sock(sk); | |
9be4e3fb | 516 | set_current_state(TASK_INTERRUPTIBLE); |
1da177e4 | 517 | |
c1cbe4b7 BL |
518 | err = sock_error(sk); |
519 | if (err) | |
1da177e4 | 520 | break; |
1da177e4 | 521 | } |
9be4e3fb | 522 | __set_current_state(TASK_RUNNING); |
aa395145 | 523 | remove_wait_queue(sk_sleep(sk), &wait); |
1da177e4 LT |
524 | return err; |
525 | } | |
526 | EXPORT_SYMBOL(bt_sock_wait_state); | |
527 | ||
256a06c8 MY |
528 | #ifdef CONFIG_PROC_FS |
529 | struct bt_seq_state { | |
530 | struct bt_sock_list *l; | |
531 | }; | |
532 | ||
533 | static void *bt_seq_start(struct seq_file *seq, loff_t *pos) | |
534 | __acquires(seq->private->l->lock) | |
535 | { | |
536 | struct bt_seq_state *s = seq->private; | |
537 | struct bt_sock_list *l = s->l; | |
538 | ||
539 | read_lock(&l->lock); | |
540 | return seq_hlist_start_head(&l->head, *pos); | |
541 | } | |
542 | ||
543 | static void *bt_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
544 | { | |
545 | struct bt_seq_state *s = seq->private; | |
546 | struct bt_sock_list *l = s->l; | |
547 | ||
548 | return seq_hlist_next(v, &l->head, pos); | |
549 | } | |
550 | ||
551 | static void bt_seq_stop(struct seq_file *seq, void *v) | |
552 | __releases(seq->private->l->lock) | |
553 | { | |
554 | struct bt_seq_state *s = seq->private; | |
555 | struct bt_sock_list *l = s->l; | |
556 | ||
557 | read_unlock(&l->lock); | |
558 | } | |
559 | ||
560 | static int bt_seq_show(struct seq_file *seq, void *v) | |
561 | { | |
256a06c8 MY |
562 | struct bt_seq_state *s = seq->private; |
563 | struct bt_sock_list *l = s->l; | |
256a06c8 MY |
564 | |
565 | if (v == SEQ_START_TOKEN) { | |
566 | seq_puts(seq ,"sk RefCnt Rmem Wmem User Inode Src Dst Parent"); | |
567 | ||
568 | if (l->custom_seq_show) { | |
569 | seq_putc(seq, ' '); | |
570 | l->custom_seq_show(seq, v); | |
571 | } | |
572 | ||
573 | seq_putc(seq, '\n'); | |
574 | } else { | |
09d5d4aa AE |
575 | struct sock *sk = sk_entry(v); |
576 | struct bt_sock *bt = bt_sk(sk); | |
256a06c8 | 577 | |
7028a886 AE |
578 | seq_printf(seq, |
579 | "%pK %-6d %-6u %-6u %-6u %-6lu %pMR %pMR %-6lu", | |
256a06c8 MY |
580 | sk, |
581 | atomic_read(&sk->sk_refcnt), | |
582 | sk_rmem_alloc_get(sk), | |
583 | sk_wmem_alloc_get(sk), | |
1bbb3095 | 584 | from_kuid(seq_user_ns(seq), sock_i_uid(sk)), |
256a06c8 | 585 | sock_i_ino(sk), |
7028a886 AE |
586 | &bt->src, |
587 | &bt->dst, | |
256a06c8 MY |
588 | bt->parent? sock_i_ino(bt->parent): 0LU); |
589 | ||
590 | if (l->custom_seq_show) { | |
591 | seq_putc(seq, ' '); | |
592 | l->custom_seq_show(seq, v); | |
593 | } | |
594 | ||
595 | seq_putc(seq, '\n'); | |
596 | } | |
597 | return 0; | |
598 | } | |
599 | ||
600 | static struct seq_operations bt_seq_ops = { | |
601 | .start = bt_seq_start, | |
602 | .next = bt_seq_next, | |
603 | .stop = bt_seq_stop, | |
604 | .show = bt_seq_show, | |
605 | }; | |
606 | ||
607 | static int bt_seq_open(struct inode *inode, struct file *file) | |
608 | { | |
609 | struct bt_sock_list *sk_list; | |
610 | struct bt_seq_state *s; | |
611 | ||
d9dda78b | 612 | sk_list = PDE_DATA(inode); |
256a06c8 MY |
613 | s = __seq_open_private(file, &bt_seq_ops, |
614 | sizeof(struct bt_seq_state)); | |
31f47073 | 615 | if (!s) |
256a06c8 MY |
616 | return -ENOMEM; |
617 | ||
618 | s->l = sk_list; | |
619 | return 0; | |
620 | } | |
621 | ||
14805359 AV |
622 | static const struct file_operations bt_fops = { |
623 | .open = bt_seq_open, | |
624 | .read = seq_read, | |
625 | .llseek = seq_lseek, | |
626 | .release = seq_release_private | |
627 | }; | |
628 | ||
b0316615 | 629 | int bt_procfs_init(struct net *net, const char *name, |
256a06c8 MY |
630 | struct bt_sock_list* sk_list, |
631 | int (* seq_show)(struct seq_file *, void *)) | |
632 | { | |
256a06c8 MY |
633 | sk_list->custom_seq_show = seq_show; |
634 | ||
4d006263 | 635 | if (!proc_create_data(name, 0, net->proc_net, &bt_fops, sk_list)) |
256a06c8 | 636 | return -ENOMEM; |
256a06c8 MY |
637 | return 0; |
638 | } | |
639 | ||
640 | void bt_procfs_cleanup(struct net *net, const char *name) | |
641 | { | |
ece31ffd | 642 | remove_proc_entry(name, net->proc_net); |
256a06c8 MY |
643 | } |
644 | #else | |
b0316615 | 645 | int bt_procfs_init(struct net *net, const char *name, |
256a06c8 MY |
646 | struct bt_sock_list* sk_list, |
647 | int (* seq_show)(struct seq_file *, void *)) | |
648 | { | |
649 | return 0; | |
650 | } | |
651 | ||
652 | void bt_procfs_cleanup(struct net *net, const char *name) | |
653 | { | |
654 | } | |
655 | #endif | |
656 | EXPORT_SYMBOL(bt_procfs_init); | |
657 | EXPORT_SYMBOL(bt_procfs_cleanup); | |
658 | ||
1da177e4 LT |
659 | static struct net_proto_family bt_sock_family_ops = { |
660 | .owner = THIS_MODULE, | |
661 | .family = PF_BLUETOOTH, | |
662 | .create = bt_sock_create, | |
663 | }; | |
664 | ||
1da177e4 LT |
665 | static int __init bt_init(void) |
666 | { | |
27d35284 MH |
667 | int err; |
668 | ||
1da177e4 LT |
669 | BT_INFO("Core ver %s", VERSION); |
670 | ||
27d35284 MH |
671 | err = bt_sysfs_init(); |
672 | if (err < 0) | |
673 | return err; | |
1da177e4 | 674 | |
27d35284 MH |
675 | err = sock_register(&bt_sock_family_ops); |
676 | if (err < 0) { | |
677 | bt_sysfs_cleanup(); | |
678 | return err; | |
679 | } | |
1da177e4 | 680 | |
27d35284 | 681 | BT_INFO("HCI device and connection manager initialized"); |
1da177e4 | 682 | |
64274518 GP |
683 | err = hci_sock_init(); |
684 | if (err < 0) | |
685 | goto error; | |
686 | ||
687 | err = l2cap_init(); | |
0ed54dad | 688 | if (err < 0) |
64274518 | 689 | goto sock_err; |
64274518 GP |
690 | |
691 | err = sco_init(); | |
692 | if (err < 0) { | |
693 | l2cap_exit(); | |
694 | goto sock_err; | |
695 | } | |
1da177e4 LT |
696 | |
697 | return 0; | |
64274518 GP |
698 | |
699 | sock_err: | |
700 | hci_sock_cleanup(); | |
701 | ||
702 | error: | |
703 | sock_unregister(PF_BLUETOOTH); | |
704 | bt_sysfs_cleanup(); | |
705 | ||
706 | return err; | |
1da177e4 LT |
707 | } |
708 | ||
709 | static void __exit bt_exit(void) | |
710 | { | |
64274518 GP |
711 | |
712 | sco_exit(); | |
713 | ||
714 | l2cap_exit(); | |
715 | ||
1da177e4 LT |
716 | hci_sock_cleanup(); |
717 | ||
1da177e4 | 718 | sock_unregister(PF_BLUETOOTH); |
27d35284 MH |
719 | |
720 | bt_sysfs_cleanup(); | |
1da177e4 LT |
721 | } |
722 | ||
723 | subsys_initcall(bt_init); | |
724 | module_exit(bt_exit); | |
725 | ||
63fbd24e | 726 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); |
1da177e4 LT |
727 | MODULE_DESCRIPTION("Bluetooth Core ver " VERSION); |
728 | MODULE_VERSION(VERSION); | |
729 | MODULE_LICENSE("GPL"); | |
730 | MODULE_ALIAS_NETPROTO(PF_BLUETOOTH); |