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> |
ffcecac6 | 28 | #include <linux/debugfs.h> |
3241ad82 | 29 | #include <asm/ioctls.h> |
1da177e4 LT |
30 | |
31 | #include <net/bluetooth/bluetooth.h> | |
256a06c8 | 32 | #include <linux/proc_fs.h> |
1da177e4 | 33 | |
ee485290 MH |
34 | #include "selftest.h" |
35 | ||
8ab9731d | 36 | #define VERSION "2.20" |
1da177e4 LT |
37 | |
38 | /* Bluetooth sockets */ | |
39 | #define BT_MAX_PROTO 8 | |
ec1b4cf7 | 40 | static const struct net_proto_family *bt_proto[BT_MAX_PROTO]; |
db7aa1c2 | 41 | static DEFINE_RWLOCK(bt_proto_lock); |
68845cb2 | 42 | |
68845cb2 | 43 | static struct lock_class_key bt_lock_key[BT_MAX_PROTO]; |
36cbd3dc | 44 | static const char *const bt_key_strings[BT_MAX_PROTO] = { |
68845cb2 DY |
45 | "sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP", |
46 | "sk_lock-AF_BLUETOOTH-BTPROTO_HCI", | |
47 | "sk_lock-AF_BLUETOOTH-BTPROTO_SCO", | |
48 | "sk_lock-AF_BLUETOOTH-BTPROTO_RFCOMM", | |
49 | "sk_lock-AF_BLUETOOTH-BTPROTO_BNEP", | |
50 | "sk_lock-AF_BLUETOOTH-BTPROTO_CMTP", | |
51 | "sk_lock-AF_BLUETOOTH-BTPROTO_HIDP", | |
52 | "sk_lock-AF_BLUETOOTH-BTPROTO_AVDTP", | |
53 | }; | |
54 | ||
db7aa1c2 | 55 | static struct lock_class_key bt_slock_key[BT_MAX_PROTO]; |
36cbd3dc | 56 | static const char *const bt_slock_key_strings[BT_MAX_PROTO] = { |
68845cb2 DY |
57 | "slock-AF_BLUETOOTH-BTPROTO_L2CAP", |
58 | "slock-AF_BLUETOOTH-BTPROTO_HCI", | |
59 | "slock-AF_BLUETOOTH-BTPROTO_SCO", | |
60 | "slock-AF_BLUETOOTH-BTPROTO_RFCOMM", | |
61 | "slock-AF_BLUETOOTH-BTPROTO_BNEP", | |
62 | "slock-AF_BLUETOOTH-BTPROTO_CMTP", | |
63 | "slock-AF_BLUETOOTH-BTPROTO_HIDP", | |
64 | "slock-AF_BLUETOOTH-BTPROTO_AVDTP", | |
65 | }; | |
db7aa1c2 | 66 | |
b5a30dda | 67 | void bt_sock_reclassify_lock(struct sock *sk, int proto) |
db7aa1c2 | 68 | { |
b5a30dda | 69 | BUG_ON(!sk); |
db7aa1c2 MH |
70 | BUG_ON(sock_owned_by_user(sk)); |
71 | ||
72 | sock_lock_init_class_and_name(sk, | |
73 | bt_slock_key_strings[proto], &bt_slock_key[proto], | |
74 | bt_key_strings[proto], &bt_lock_key[proto]); | |
75 | } | |
b5a30dda | 76 | EXPORT_SYMBOL(bt_sock_reclassify_lock); |
1da177e4 | 77 | |
ec1b4cf7 | 78 | int bt_sock_register(int proto, const struct net_proto_family *ops) |
1da177e4 | 79 | { |
74da626a MH |
80 | int err = 0; |
81 | ||
1da177e4 LT |
82 | if (proto < 0 || proto >= BT_MAX_PROTO) |
83 | return -EINVAL; | |
84 | ||
74da626a MH |
85 | write_lock(&bt_proto_lock); |
86 | ||
1da177e4 | 87 | if (bt_proto[proto]) |
74da626a MH |
88 | err = -EEXIST; |
89 | else | |
90 | bt_proto[proto] = ops; | |
91 | ||
92 | write_unlock(&bt_proto_lock); | |
1da177e4 | 93 | |
74da626a | 94 | return err; |
1da177e4 LT |
95 | } |
96 | EXPORT_SYMBOL(bt_sock_register); | |
97 | ||
be9f97f0 | 98 | void bt_sock_unregister(int proto) |
1da177e4 LT |
99 | { |
100 | if (proto < 0 || proto >= BT_MAX_PROTO) | |
be9f97f0 | 101 | return; |
1da177e4 | 102 | |
74da626a | 103 | write_lock(&bt_proto_lock); |
be9f97f0 | 104 | bt_proto[proto] = NULL; |
74da626a | 105 | write_unlock(&bt_proto_lock); |
1da177e4 LT |
106 | } |
107 | EXPORT_SYMBOL(bt_sock_unregister); | |
108 | ||
3f378b68 EP |
109 | static int bt_sock_create(struct net *net, struct socket *sock, int proto, |
110 | int kern) | |
1da177e4 | 111 | { |
74da626a | 112 | int err; |
1da177e4 | 113 | |
1b8d7ae4 EB |
114 | if (net != &init_net) |
115 | return -EAFNOSUPPORT; | |
116 | ||
1da177e4 LT |
117 | if (proto < 0 || proto >= BT_MAX_PROTO) |
118 | return -EINVAL; | |
119 | ||
95a5afca | 120 | if (!bt_proto[proto]) |
1da177e4 | 121 | request_module("bt-proto-%d", proto); |
74da626a | 122 | |
1da177e4 | 123 | err = -EPROTONOSUPPORT; |
74da626a MH |
124 | |
125 | read_lock(&bt_proto_lock); | |
126 | ||
1da177e4 | 127 | if (bt_proto[proto] && try_module_get(bt_proto[proto]->owner)) { |
3f378b68 | 128 | err = bt_proto[proto]->create(net, sock, proto, kern); |
b5a30dda OP |
129 | if (!err) |
130 | bt_sock_reclassify_lock(sock->sk, proto); | |
1da177e4 LT |
131 | module_put(bt_proto[proto]->owner); |
132 | } | |
74da626a MH |
133 | |
134 | read_unlock(&bt_proto_lock); | |
135 | ||
8e87d142 | 136 | return err; |
1da177e4 LT |
137 | } |
138 | ||
139 | void bt_sock_link(struct bt_sock_list *l, struct sock *sk) | |
140 | { | |
94f5bfb8 | 141 | write_lock(&l->lock); |
1da177e4 | 142 | sk_add_node(sk, &l->head); |
94f5bfb8 | 143 | write_unlock(&l->lock); |
1da177e4 LT |
144 | } |
145 | EXPORT_SYMBOL(bt_sock_link); | |
146 | ||
147 | void bt_sock_unlink(struct bt_sock_list *l, struct sock *sk) | |
148 | { | |
94f5bfb8 | 149 | write_lock(&l->lock); |
1da177e4 | 150 | sk_del_node_init(sk); |
94f5bfb8 | 151 | write_unlock(&l->lock); |
1da177e4 LT |
152 | } |
153 | EXPORT_SYMBOL(bt_sock_unlink); | |
154 | ||
155 | void bt_accept_enqueue(struct sock *parent, struct sock *sk) | |
156 | { | |
157 | BT_DBG("parent %p, sk %p", parent, sk); | |
158 | ||
159 | sock_hold(sk); | |
160 | list_add_tail(&bt_sk(sk)->accept_q, &bt_sk(parent)->accept_q); | |
161 | bt_sk(sk)->parent = parent; | |
162 | parent->sk_ack_backlog++; | |
163 | } | |
164 | EXPORT_SYMBOL(bt_accept_enqueue); | |
165 | ||
166 | void bt_accept_unlink(struct sock *sk) | |
167 | { | |
168 | BT_DBG("sk %p state %d", sk, sk->sk_state); | |
169 | ||
170 | list_del_init(&bt_sk(sk)->accept_q); | |
171 | bt_sk(sk)->parent->sk_ack_backlog--; | |
172 | bt_sk(sk)->parent = NULL; | |
173 | sock_put(sk); | |
174 | } | |
175 | EXPORT_SYMBOL(bt_accept_unlink); | |
176 | ||
177 | struct sock *bt_accept_dequeue(struct sock *parent, struct socket *newsock) | |
178 | { | |
179 | struct list_head *p, *n; | |
180 | struct sock *sk; | |
181 | ||
182 | BT_DBG("parent %p", parent); | |
183 | ||
184 | list_for_each_safe(p, n, &bt_sk(parent)->accept_q) { | |
185 | sk = (struct sock *) list_entry(p, struct bt_sock, accept_q); | |
186 | ||
8a154a8f | 187 | lock_sock(sk); |
1da177e4 LT |
188 | |
189 | /* FIXME: Is this check still needed */ | |
190 | if (sk->sk_state == BT_CLOSED) { | |
8a154a8f | 191 | release_sock(sk); |
1da177e4 LT |
192 | bt_accept_unlink(sk); |
193 | continue; | |
194 | } | |
195 | ||
c4f912e1 | 196 | if (sk->sk_state == BT_CONNECTED || !newsock || |
d060991f | 197 | test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags)) { |
1da177e4 LT |
198 | bt_accept_unlink(sk); |
199 | if (newsock) | |
200 | sock_graft(sk, newsock); | |
d37f50e1 | 201 | |
8a154a8f | 202 | release_sock(sk); |
1da177e4 LT |
203 | return sk; |
204 | } | |
205 | ||
8a154a8f | 206 | release_sock(sk); |
1da177e4 | 207 | } |
d37f50e1 | 208 | |
1da177e4 LT |
209 | return NULL; |
210 | } | |
211 | EXPORT_SYMBOL(bt_accept_dequeue); | |
212 | ||
1b784140 YX |
213 | int bt_sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t len, |
214 | int flags) | |
1da177e4 LT |
215 | { |
216 | int noblock = flags & MSG_DONTWAIT; | |
217 | struct sock *sk = sock->sk; | |
218 | struct sk_buff *skb; | |
219 | size_t copied; | |
220 | int err; | |
221 | ||
a418b893 | 222 | BT_DBG("sock %p sk %p len %zu", sock, sk, len); |
1da177e4 LT |
223 | |
224 | if (flags & (MSG_OOB)) | |
225 | return -EOPNOTSUPP; | |
226 | ||
5a08ecce AE |
227 | skb = skb_recv_datagram(sk, flags, noblock, &err); |
228 | if (!skb) { | |
f3d33426 | 229 | if (sk->sk_shutdown & RCV_SHUTDOWN) |
1da177e4 | 230 | return 0; |
f3d33426 | 231 | |
1da177e4 LT |
232 | return err; |
233 | } | |
234 | ||
1da177e4 LT |
235 | copied = skb->len; |
236 | if (len < copied) { | |
237 | msg->msg_flags |= MSG_TRUNC; | |
238 | copied = len; | |
239 | } | |
240 | ||
badff6d0 | 241 | skb_reset_transport_header(skb); |
51f3d02b | 242 | err = skb_copy_datagram_msg(skb, 0, msg, copied); |
d9763698 | 243 | if (err == 0) { |
3b885787 | 244 | sock_recv_ts_and_drops(msg, sk, skb); |
1da177e4 | 245 | |
d9763698 MH |
246 | if (bt_sk(sk)->skb_msg_name) |
247 | bt_sk(sk)->skb_msg_name(skb, msg->msg_name, | |
248 | &msg->msg_namelen); | |
d9763698 MH |
249 | } |
250 | ||
1da177e4 LT |
251 | skb_free_datagram(sk, skb); |
252 | ||
253 | return err ? : copied; | |
254 | } | |
255 | EXPORT_SYMBOL(bt_sock_recvmsg); | |
256 | ||
796c86ee MM |
257 | static long bt_sock_data_wait(struct sock *sk, long timeo) |
258 | { | |
259 | DECLARE_WAITQUEUE(wait, current); | |
260 | ||
261 | add_wait_queue(sk_sleep(sk), &wait); | |
262 | for (;;) { | |
263 | set_current_state(TASK_INTERRUPTIBLE); | |
264 | ||
265 | if (!skb_queue_empty(&sk->sk_receive_queue)) | |
266 | break; | |
267 | ||
268 | if (sk->sk_err || (sk->sk_shutdown & RCV_SHUTDOWN)) | |
269 | break; | |
270 | ||
271 | if (signal_pending(current) || !timeo) | |
272 | break; | |
273 | ||
274 | set_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags); | |
275 | release_sock(sk); | |
276 | timeo = schedule_timeout(timeo); | |
277 | lock_sock(sk); | |
278 | clear_bit(SOCK_ASYNC_WAITDATA, &sk->sk_socket->flags); | |
279 | } | |
280 | ||
281 | __set_current_state(TASK_RUNNING); | |
282 | remove_wait_queue(sk_sleep(sk), &wait); | |
283 | return timeo; | |
284 | } | |
285 | ||
1b784140 YX |
286 | int bt_sock_stream_recvmsg(struct socket *sock, struct msghdr *msg, |
287 | size_t size, int flags) | |
796c86ee MM |
288 | { |
289 | struct sock *sk = sock->sk; | |
290 | int err = 0; | |
291 | size_t target, copied = 0; | |
292 | long timeo; | |
293 | ||
294 | if (flags & MSG_OOB) | |
295 | return -EOPNOTSUPP; | |
296 | ||
796c86ee MM |
297 | BT_DBG("sk %p size %zu", sk, size); |
298 | ||
299 | lock_sock(sk); | |
300 | ||
301 | target = sock_rcvlowat(sk, flags & MSG_WAITALL, size); | |
302 | timeo = sock_rcvtimeo(sk, flags & MSG_DONTWAIT); | |
303 | ||
304 | do { | |
305 | struct sk_buff *skb; | |
306 | int chunk; | |
307 | ||
308 | skb = skb_dequeue(&sk->sk_receive_queue); | |
309 | if (!skb) { | |
310 | if (copied >= target) | |
311 | break; | |
312 | ||
5a08ecce AE |
313 | err = sock_error(sk); |
314 | if (err) | |
796c86ee MM |
315 | break; |
316 | if (sk->sk_shutdown & RCV_SHUTDOWN) | |
317 | break; | |
318 | ||
319 | err = -EAGAIN; | |
320 | if (!timeo) | |
321 | break; | |
322 | ||
323 | timeo = bt_sock_data_wait(sk, timeo); | |
324 | ||
325 | if (signal_pending(current)) { | |
326 | err = sock_intr_errno(timeo); | |
327 | goto out; | |
328 | } | |
329 | continue; | |
330 | } | |
331 | ||
332 | chunk = min_t(unsigned int, skb->len, size); | |
51f3d02b | 333 | if (skb_copy_datagram_msg(skb, 0, msg, chunk)) { |
796c86ee MM |
334 | skb_queue_head(&sk->sk_receive_queue, skb); |
335 | if (!copied) | |
336 | copied = -EFAULT; | |
337 | break; | |
338 | } | |
339 | copied += chunk; | |
340 | size -= chunk; | |
341 | ||
342 | sock_recv_ts_and_drops(msg, sk, skb); | |
343 | ||
344 | if (!(flags & MSG_PEEK)) { | |
5b668eb3 MM |
345 | int skb_len = skb_headlen(skb); |
346 | ||
347 | if (chunk <= skb_len) { | |
348 | __skb_pull(skb, chunk); | |
349 | } else { | |
350 | struct sk_buff *frag; | |
351 | ||
352 | __skb_pull(skb, skb_len); | |
353 | chunk -= skb_len; | |
354 | ||
355 | skb_walk_frags(skb, frag) { | |
356 | if (chunk <= frag->len) { | |
357 | /* Pulling partial data */ | |
358 | skb->len -= chunk; | |
359 | skb->data_len -= chunk; | |
360 | __skb_pull(frag, chunk); | |
361 | break; | |
362 | } else if (frag->len) { | |
363 | /* Pulling all frag data */ | |
364 | chunk -= frag->len; | |
365 | skb->len -= frag->len; | |
366 | skb->data_len -= frag->len; | |
367 | __skb_pull(frag, frag->len); | |
368 | } | |
369 | } | |
370 | } | |
371 | ||
796c86ee MM |
372 | if (skb->len) { |
373 | skb_queue_head(&sk->sk_receive_queue, skb); | |
374 | break; | |
375 | } | |
376 | kfree_skb(skb); | |
377 | ||
378 | } else { | |
379 | /* put message back and return */ | |
380 | skb_queue_head(&sk->sk_receive_queue, skb); | |
381 | break; | |
382 | } | |
383 | } while (size); | |
384 | ||
385 | out: | |
386 | release_sock(sk); | |
387 | return copied ? : err; | |
388 | } | |
389 | EXPORT_SYMBOL(bt_sock_stream_recvmsg); | |
390 | ||
1da177e4 LT |
391 | static inline unsigned int bt_accept_poll(struct sock *parent) |
392 | { | |
393 | struct list_head *p, *n; | |
394 | struct sock *sk; | |
395 | ||
396 | list_for_each_safe(p, n, &bt_sk(parent)->accept_q) { | |
397 | sk = (struct sock *) list_entry(p, struct bt_sock, accept_q); | |
d5f2d2be | 398 | if (sk->sk_state == BT_CONNECTED || |
c5daa683 GP |
399 | (test_bit(BT_SK_DEFER_SETUP, &bt_sk(parent)->flags) && |
400 | sk->sk_state == BT_CONNECT2)) | |
1da177e4 LT |
401 | return POLLIN | POLLRDNORM; |
402 | } | |
403 | ||
404 | return 0; | |
405 | } | |
406 | ||
8fc9ced3 GP |
407 | unsigned int bt_sock_poll(struct file *file, struct socket *sock, |
408 | poll_table *wait) | |
1da177e4 LT |
409 | { |
410 | struct sock *sk = sock->sk; | |
411 | unsigned int mask = 0; | |
412 | ||
413 | BT_DBG("sock %p, sk %p", sock, sk); | |
414 | ||
aa395145 | 415 | poll_wait(file, sk_sleep(sk), wait); |
1da177e4 LT |
416 | |
417 | if (sk->sk_state == BT_LISTEN) | |
418 | return bt_accept_poll(sk); | |
419 | ||
420 | if (sk->sk_err || !skb_queue_empty(&sk->sk_error_queue)) | |
7d4c04fc | 421 | mask |= POLLERR | |
8facd5fb | 422 | (sock_flag(sk, SOCK_SELECT_ERR_QUEUE) ? POLLPRI : 0); |
1da177e4 | 423 | |
f348d70a | 424 | if (sk->sk_shutdown & RCV_SHUTDOWN) |
db40980f | 425 | mask |= POLLRDHUP | POLLIN | POLLRDNORM; |
f348d70a | 426 | |
1da177e4 LT |
427 | if (sk->sk_shutdown == SHUTDOWN_MASK) |
428 | mask |= POLLHUP; | |
429 | ||
db40980f | 430 | if (!skb_queue_empty(&sk->sk_receive_queue)) |
1da177e4 LT |
431 | mask |= POLLIN | POLLRDNORM; |
432 | ||
433 | if (sk->sk_state == BT_CLOSED) | |
434 | mask |= POLLHUP; | |
435 | ||
436 | if (sk->sk_state == BT_CONNECT || | |
437 | sk->sk_state == BT_CONNECT2 || | |
438 | sk->sk_state == BT_CONFIG) | |
439 | return mask; | |
440 | ||
c5daa683 | 441 | if (!test_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags) && sock_writeable(sk)) |
1da177e4 LT |
442 | mask |= POLLOUT | POLLWRNORM | POLLWRBAND; |
443 | else | |
444 | set_bit(SOCK_ASYNC_NOSPACE, &sk->sk_socket->flags); | |
445 | ||
446 | return mask; | |
447 | } | |
448 | EXPORT_SYMBOL(bt_sock_poll); | |
449 | ||
3241ad82 MH |
450 | int bt_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) |
451 | { | |
452 | struct sock *sk = sock->sk; | |
43cbeee9 MH |
453 | struct sk_buff *skb; |
454 | long amount; | |
3241ad82 MH |
455 | int err; |
456 | ||
457 | BT_DBG("sk %p cmd %x arg %lx", sk, cmd, arg); | |
458 | ||
459 | switch (cmd) { | |
43cbeee9 MH |
460 | case TIOCOUTQ: |
461 | if (sk->sk_state == BT_LISTEN) | |
462 | return -EINVAL; | |
463 | ||
31e6d363 | 464 | amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk); |
43cbeee9 MH |
465 | if (amount < 0) |
466 | amount = 0; | |
467 | err = put_user(amount, (int __user *) arg); | |
468 | break; | |
469 | ||
470 | case TIOCINQ: | |
471 | if (sk->sk_state == BT_LISTEN) | |
472 | return -EINVAL; | |
473 | ||
474 | lock_sock(sk); | |
475 | skb = skb_peek(&sk->sk_receive_queue); | |
476 | amount = skb ? skb->len : 0; | |
477 | release_sock(sk); | |
478 | err = put_user(amount, (int __user *) arg); | |
479 | break; | |
480 | ||
3241ad82 MH |
481 | case SIOCGSTAMP: |
482 | err = sock_get_timestamp(sk, (struct timeval __user *) arg); | |
483 | break; | |
484 | ||
485 | case SIOCGSTAMPNS: | |
486 | err = sock_get_timestampns(sk, (struct timespec __user *) arg); | |
487 | break; | |
488 | ||
489 | default: | |
490 | err = -ENOIOCTLCMD; | |
491 | break; | |
492 | } | |
493 | ||
494 | return err; | |
495 | } | |
496 | EXPORT_SYMBOL(bt_sock_ioctl); | |
497 | ||
0fba96f9 | 498 | /* This function expects the sk lock to be held when called */ |
1da177e4 LT |
499 | int bt_sock_wait_state(struct sock *sk, int state, unsigned long timeo) |
500 | { | |
501 | DECLARE_WAITQUEUE(wait, current); | |
502 | int err = 0; | |
503 | ||
504 | BT_DBG("sk %p", sk); | |
505 | ||
aa395145 | 506 | add_wait_queue(sk_sleep(sk), &wait); |
9be4e3fb | 507 | set_current_state(TASK_INTERRUPTIBLE); |
1da177e4 | 508 | while (sk->sk_state != state) { |
1da177e4 | 509 | if (!timeo) { |
b4c612a4 | 510 | err = -EINPROGRESS; |
1da177e4 LT |
511 | break; |
512 | } | |
513 | ||
514 | if (signal_pending(current)) { | |
515 | err = sock_intr_errno(timeo); | |
516 | break; | |
517 | } | |
518 | ||
519 | release_sock(sk); | |
520 | timeo = schedule_timeout(timeo); | |
521 | lock_sock(sk); | |
9be4e3fb | 522 | set_current_state(TASK_INTERRUPTIBLE); |
1da177e4 | 523 | |
c1cbe4b7 BL |
524 | err = sock_error(sk); |
525 | if (err) | |
1da177e4 | 526 | break; |
1da177e4 | 527 | } |
9be4e3fb | 528 | __set_current_state(TASK_RUNNING); |
aa395145 | 529 | remove_wait_queue(sk_sleep(sk), &wait); |
1da177e4 LT |
530 | return err; |
531 | } | |
532 | EXPORT_SYMBOL(bt_sock_wait_state); | |
533 | ||
e793dcf0 JH |
534 | /* This function expects the sk lock to be held when called */ |
535 | int bt_sock_wait_ready(struct sock *sk, unsigned long flags) | |
536 | { | |
537 | DECLARE_WAITQUEUE(wait, current); | |
538 | unsigned long timeo; | |
539 | int err = 0; | |
540 | ||
541 | BT_DBG("sk %p", sk); | |
542 | ||
543 | timeo = sock_sndtimeo(sk, flags & O_NONBLOCK); | |
544 | ||
545 | add_wait_queue(sk_sleep(sk), &wait); | |
546 | set_current_state(TASK_INTERRUPTIBLE); | |
547 | while (test_bit(BT_SK_SUSPEND, &bt_sk(sk)->flags)) { | |
548 | if (!timeo) { | |
549 | err = -EAGAIN; | |
550 | break; | |
551 | } | |
552 | ||
553 | if (signal_pending(current)) { | |
554 | err = sock_intr_errno(timeo); | |
555 | break; | |
556 | } | |
557 | ||
558 | release_sock(sk); | |
559 | timeo = schedule_timeout(timeo); | |
560 | lock_sock(sk); | |
561 | set_current_state(TASK_INTERRUPTIBLE); | |
562 | ||
563 | err = sock_error(sk); | |
564 | if (err) | |
565 | break; | |
566 | } | |
567 | __set_current_state(TASK_RUNNING); | |
568 | remove_wait_queue(sk_sleep(sk), &wait); | |
569 | ||
570 | return err; | |
571 | } | |
572 | EXPORT_SYMBOL(bt_sock_wait_ready); | |
573 | ||
256a06c8 MY |
574 | #ifdef CONFIG_PROC_FS |
575 | struct bt_seq_state { | |
576 | struct bt_sock_list *l; | |
577 | }; | |
578 | ||
579 | static void *bt_seq_start(struct seq_file *seq, loff_t *pos) | |
580 | __acquires(seq->private->l->lock) | |
581 | { | |
582 | struct bt_seq_state *s = seq->private; | |
583 | struct bt_sock_list *l = s->l; | |
584 | ||
585 | read_lock(&l->lock); | |
586 | return seq_hlist_start_head(&l->head, *pos); | |
587 | } | |
588 | ||
589 | static void *bt_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
590 | { | |
591 | struct bt_seq_state *s = seq->private; | |
592 | struct bt_sock_list *l = s->l; | |
593 | ||
594 | return seq_hlist_next(v, &l->head, pos); | |
595 | } | |
596 | ||
597 | static void bt_seq_stop(struct seq_file *seq, void *v) | |
598 | __releases(seq->private->l->lock) | |
599 | { | |
600 | struct bt_seq_state *s = seq->private; | |
601 | struct bt_sock_list *l = s->l; | |
602 | ||
603 | read_unlock(&l->lock); | |
604 | } | |
605 | ||
606 | static int bt_seq_show(struct seq_file *seq, void *v) | |
607 | { | |
256a06c8 MY |
608 | struct bt_seq_state *s = seq->private; |
609 | struct bt_sock_list *l = s->l; | |
256a06c8 MY |
610 | |
611 | if (v == SEQ_START_TOKEN) { | |
c5605755 | 612 | seq_puts(seq ,"sk RefCnt Rmem Wmem User Inode Parent"); |
256a06c8 MY |
613 | |
614 | if (l->custom_seq_show) { | |
615 | seq_putc(seq, ' '); | |
616 | l->custom_seq_show(seq, v); | |
617 | } | |
618 | ||
619 | seq_putc(seq, '\n'); | |
620 | } else { | |
09d5d4aa AE |
621 | struct sock *sk = sk_entry(v); |
622 | struct bt_sock *bt = bt_sk(sk); | |
256a06c8 | 623 | |
7028a886 | 624 | seq_printf(seq, |
5f6cd79f | 625 | "%pK %-6d %-6u %-6u %-6u %-6lu %-6lu", |
256a06c8 MY |
626 | sk, |
627 | atomic_read(&sk->sk_refcnt), | |
628 | sk_rmem_alloc_get(sk), | |
629 | sk_wmem_alloc_get(sk), | |
1bbb3095 | 630 | from_kuid(seq_user_ns(seq), sock_i_uid(sk)), |
256a06c8 | 631 | sock_i_ino(sk), |
256a06c8 MY |
632 | bt->parent? sock_i_ino(bt->parent): 0LU); |
633 | ||
634 | if (l->custom_seq_show) { | |
635 | seq_putc(seq, ' '); | |
636 | l->custom_seq_show(seq, v); | |
637 | } | |
638 | ||
639 | seq_putc(seq, '\n'); | |
640 | } | |
641 | return 0; | |
642 | } | |
643 | ||
26b0f4e2 | 644 | static const struct seq_operations bt_seq_ops = { |
256a06c8 MY |
645 | .start = bt_seq_start, |
646 | .next = bt_seq_next, | |
647 | .stop = bt_seq_stop, | |
648 | .show = bt_seq_show, | |
649 | }; | |
650 | ||
651 | static int bt_seq_open(struct inode *inode, struct file *file) | |
652 | { | |
653 | struct bt_sock_list *sk_list; | |
654 | struct bt_seq_state *s; | |
655 | ||
d9dda78b | 656 | sk_list = PDE_DATA(inode); |
256a06c8 MY |
657 | s = __seq_open_private(file, &bt_seq_ops, |
658 | sizeof(struct bt_seq_state)); | |
31f47073 | 659 | if (!s) |
256a06c8 MY |
660 | return -ENOMEM; |
661 | ||
662 | s->l = sk_list; | |
663 | return 0; | |
664 | } | |
665 | ||
14805359 AV |
666 | static const struct file_operations bt_fops = { |
667 | .open = bt_seq_open, | |
668 | .read = seq_read, | |
669 | .llseek = seq_lseek, | |
670 | .release = seq_release_private | |
671 | }; | |
672 | ||
b0316615 | 673 | int bt_procfs_init(struct net *net, const char *name, |
256a06c8 MY |
674 | struct bt_sock_list* sk_list, |
675 | int (* seq_show)(struct seq_file *, void *)) | |
676 | { | |
256a06c8 MY |
677 | sk_list->custom_seq_show = seq_show; |
678 | ||
4d006263 | 679 | if (!proc_create_data(name, 0, net->proc_net, &bt_fops, sk_list)) |
256a06c8 | 680 | return -ENOMEM; |
256a06c8 MY |
681 | return 0; |
682 | } | |
683 | ||
684 | void bt_procfs_cleanup(struct net *net, const char *name) | |
685 | { | |
ece31ffd | 686 | remove_proc_entry(name, net->proc_net); |
256a06c8 MY |
687 | } |
688 | #else | |
b0316615 | 689 | int bt_procfs_init(struct net *net, const char *name, |
256a06c8 MY |
690 | struct bt_sock_list* sk_list, |
691 | int (* seq_show)(struct seq_file *, void *)) | |
692 | { | |
693 | return 0; | |
694 | } | |
695 | ||
696 | void bt_procfs_cleanup(struct net *net, const char *name) | |
697 | { | |
698 | } | |
699 | #endif | |
700 | EXPORT_SYMBOL(bt_procfs_init); | |
701 | EXPORT_SYMBOL(bt_procfs_cleanup); | |
702 | ||
1da177e4 LT |
703 | static struct net_proto_family bt_sock_family_ops = { |
704 | .owner = THIS_MODULE, | |
705 | .family = PF_BLUETOOTH, | |
706 | .create = bt_sock_create, | |
707 | }; | |
708 | ||
ffcecac6 MH |
709 | struct dentry *bt_debugfs; |
710 | EXPORT_SYMBOL_GPL(bt_debugfs); | |
711 | ||
1da177e4 LT |
712 | static int __init bt_init(void) |
713 | { | |
27d35284 MH |
714 | int err; |
715 | ||
b4772ef8 | 716 | sock_skb_cb_check_size(sizeof(struct bt_skb_cb)); |
7cb9d20f | 717 | |
1da177e4 LT |
718 | BT_INFO("Core ver %s", VERSION); |
719 | ||
ee485290 MH |
720 | err = bt_selftest(); |
721 | if (err < 0) | |
722 | return err; | |
723 | ||
ffcecac6 MH |
724 | bt_debugfs = debugfs_create_dir("bluetooth", NULL); |
725 | ||
27d35284 MH |
726 | err = bt_sysfs_init(); |
727 | if (err < 0) | |
728 | return err; | |
1da177e4 | 729 | |
27d35284 MH |
730 | err = sock_register(&bt_sock_family_ops); |
731 | if (err < 0) { | |
732 | bt_sysfs_cleanup(); | |
733 | return err; | |
734 | } | |
1da177e4 | 735 | |
27d35284 | 736 | BT_INFO("HCI device and connection manager initialized"); |
1da177e4 | 737 | |
64274518 GP |
738 | err = hci_sock_init(); |
739 | if (err < 0) | |
740 | goto error; | |
741 | ||
742 | err = l2cap_init(); | |
0ed54dad | 743 | if (err < 0) |
64274518 | 744 | goto sock_err; |
64274518 GP |
745 | |
746 | err = sco_init(); | |
747 | if (err < 0) { | |
748 | l2cap_exit(); | |
749 | goto sock_err; | |
750 | } | |
1da177e4 | 751 | |
6d785aa3 JH |
752 | err = mgmt_init(); |
753 | if (err < 0) { | |
754 | sco_exit(); | |
755 | l2cap_exit(); | |
756 | goto sock_err; | |
757 | } | |
758 | ||
1da177e4 | 759 | return 0; |
64274518 GP |
760 | |
761 | sock_err: | |
762 | hci_sock_cleanup(); | |
763 | ||
764 | error: | |
765 | sock_unregister(PF_BLUETOOTH); | |
766 | bt_sysfs_cleanup(); | |
767 | ||
768 | return err; | |
1da177e4 LT |
769 | } |
770 | ||
771 | static void __exit bt_exit(void) | |
772 | { | |
6d785aa3 JH |
773 | mgmt_exit(); |
774 | ||
64274518 GP |
775 | sco_exit(); |
776 | ||
777 | l2cap_exit(); | |
778 | ||
1da177e4 LT |
779 | hci_sock_cleanup(); |
780 | ||
1da177e4 | 781 | sock_unregister(PF_BLUETOOTH); |
27d35284 MH |
782 | |
783 | bt_sysfs_cleanup(); | |
ffcecac6 MH |
784 | |
785 | debugfs_remove_recursive(bt_debugfs); | |
1da177e4 LT |
786 | } |
787 | ||
788 | subsys_initcall(bt_init); | |
789 | module_exit(bt_exit); | |
790 | ||
63fbd24e | 791 | MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>"); |
1da177e4 LT |
792 | MODULE_DESCRIPTION("Bluetooth Core ver " VERSION); |
793 | MODULE_VERSION(VERSION); | |
794 | MODULE_LICENSE("GPL"); | |
795 | MODULE_ALIAS_NETPROTO(PF_BLUETOOTH); |