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 HCI sockets. */ | |
26 | ||
1da177e4 LT |
27 | #include <linux/module.h> |
28 | ||
29 | #include <linux/types.h> | |
4fc268d2 | 30 | #include <linux/capability.h> |
1da177e4 LT |
31 | #include <linux/errno.h> |
32 | #include <linux/kernel.h> | |
1da177e4 LT |
33 | #include <linux/slab.h> |
34 | #include <linux/poll.h> | |
35 | #include <linux/fcntl.h> | |
36 | #include <linux/init.h> | |
37 | #include <linux/skbuff.h> | |
38 | #include <linux/workqueue.h> | |
39 | #include <linux/interrupt.h> | |
767c5eb5 | 40 | #include <linux/compat.h> |
1da177e4 LT |
41 | #include <linux/socket.h> |
42 | #include <linux/ioctl.h> | |
43 | #include <net/sock.h> | |
44 | ||
70f23020 | 45 | #include <linux/uaccess.h> |
1da177e4 LT |
46 | #include <asm/unaligned.h> |
47 | ||
48 | #include <net/bluetooth/bluetooth.h> | |
49 | #include <net/bluetooth/hci_core.h> | |
cd82e61c | 50 | #include <net/bluetooth/hci_mon.h> |
1da177e4 | 51 | |
cd82e61c MH |
52 | static atomic_t monitor_promisc = ATOMIC_INIT(0); |
53 | ||
1da177e4 LT |
54 | /* ----- HCI socket interface ----- */ |
55 | ||
56 | static inline int hci_test_bit(int nr, void *addr) | |
57 | { | |
58 | return *((__u32 *) addr + (nr >> 5)) & ((__u32) 1 << (nr & 31)); | |
59 | } | |
60 | ||
61 | /* Security filter */ | |
62 | static struct hci_sec_filter hci_sec_filter = { | |
63 | /* Packet types */ | |
64 | 0x10, | |
65 | /* Events */ | |
dd7f5527 | 66 | { 0x1000d9fe, 0x0000b00c }, |
1da177e4 LT |
67 | /* Commands */ |
68 | { | |
69 | { 0x0 }, | |
70 | /* OGF_LINK_CTL */ | |
7c631a67 | 71 | { 0xbe000006, 0x00000001, 0x00000000, 0x00 }, |
1da177e4 | 72 | /* OGF_LINK_POLICY */ |
7c631a67 | 73 | { 0x00005200, 0x00000000, 0x00000000, 0x00 }, |
1da177e4 | 74 | /* OGF_HOST_CTL */ |
7c631a67 | 75 | { 0xaab00200, 0x2b402aaa, 0x05220154, 0x00 }, |
1da177e4 | 76 | /* OGF_INFO_PARAM */ |
7c631a67 | 77 | { 0x000002be, 0x00000000, 0x00000000, 0x00 }, |
1da177e4 | 78 | /* OGF_STATUS_PARAM */ |
7c631a67 | 79 | { 0x000000ea, 0x00000000, 0x00000000, 0x00 } |
1da177e4 LT |
80 | } |
81 | }; | |
82 | ||
83 | static struct bt_sock_list hci_sk_list = { | |
d5fb2962 | 84 | .lock = __RW_LOCK_UNLOCKED(hci_sk_list.lock) |
1da177e4 LT |
85 | }; |
86 | ||
87 | /* Send frame to RAW socket */ | |
470fe1b5 | 88 | void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
89 | { |
90 | struct sock *sk; | |
91 | struct hlist_node *node; | |
e0edf373 | 92 | struct sk_buff *skb_copy = NULL; |
1da177e4 LT |
93 | |
94 | BT_DBG("hdev %p len %d", hdev, skb->len); | |
95 | ||
96 | read_lock(&hci_sk_list.lock); | |
470fe1b5 | 97 | |
1da177e4 LT |
98 | sk_for_each(sk, node, &hci_sk_list.head) { |
99 | struct hci_filter *flt; | |
100 | struct sk_buff *nskb; | |
101 | ||
102 | if (sk->sk_state != BT_BOUND || hci_pi(sk)->hdev != hdev) | |
103 | continue; | |
104 | ||
105 | /* Don't send frame to the socket it came from */ | |
106 | if (skb->sk == sk) | |
107 | continue; | |
108 | ||
470fe1b5 | 109 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) |
a40c406c JH |
110 | continue; |
111 | ||
1da177e4 LT |
112 | /* Apply filter */ |
113 | flt = &hci_pi(sk)->filter; | |
114 | ||
0d48d939 | 115 | if (!test_bit((bt_cb(skb)->pkt_type == HCI_VENDOR_PKT) ? |
3bb3c755 GP |
116 | 0 : (bt_cb(skb)->pkt_type & HCI_FLT_TYPE_BITS), |
117 | &flt->type_mask)) | |
1da177e4 LT |
118 | continue; |
119 | ||
0d48d939 | 120 | if (bt_cb(skb)->pkt_type == HCI_EVENT_PKT) { |
1da177e4 LT |
121 | register int evt = (*(__u8 *)skb->data & HCI_FLT_EVENT_BITS); |
122 | ||
123 | if (!hci_test_bit(evt, &flt->event_mask)) | |
124 | continue; | |
125 | ||
4498c80d DM |
126 | if (flt->opcode && |
127 | ((evt == HCI_EV_CMD_COMPLETE && | |
128 | flt->opcode != | |
905f3ed6 | 129 | get_unaligned((__le16 *)(skb->data + 3))) || |
4498c80d DM |
130 | (evt == HCI_EV_CMD_STATUS && |
131 | flt->opcode != | |
905f3ed6 | 132 | get_unaligned((__le16 *)(skb->data + 4))))) |
1da177e4 LT |
133 | continue; |
134 | } | |
135 | ||
e0edf373 MH |
136 | if (!skb_copy) { |
137 | /* Create a private copy with headroom */ | |
138 | skb_copy = __pskb_copy(skb, 1, GFP_ATOMIC); | |
139 | if (!skb_copy) | |
140 | continue; | |
141 | ||
142 | /* Put type byte before the data */ | |
143 | memcpy(skb_push(skb_copy, 1), &bt_cb(skb)->pkt_type, 1); | |
144 | } | |
145 | ||
146 | nskb = skb_clone(skb_copy, GFP_ATOMIC); | |
70f23020 | 147 | if (!nskb) |
1da177e4 LT |
148 | continue; |
149 | ||
470fe1b5 MH |
150 | if (sock_queue_rcv_skb(sk, nskb)) |
151 | kfree_skb(nskb); | |
152 | } | |
153 | ||
154 | read_unlock(&hci_sk_list.lock); | |
e0edf373 MH |
155 | |
156 | kfree_skb(skb_copy); | |
470fe1b5 MH |
157 | } |
158 | ||
159 | /* Send frame to control socket */ | |
160 | void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk) | |
161 | { | |
162 | struct sock *sk; | |
163 | struct hlist_node *node; | |
164 | ||
165 | BT_DBG("len %d", skb->len); | |
166 | ||
167 | read_lock(&hci_sk_list.lock); | |
168 | ||
169 | sk_for_each(sk, node, &hci_sk_list.head) { | |
170 | struct sk_buff *nskb; | |
171 | ||
172 | /* Skip the original socket */ | |
173 | if (sk == skip_sk) | |
174 | continue; | |
175 | ||
176 | if (sk->sk_state != BT_BOUND) | |
177 | continue; | |
178 | ||
179 | if (hci_pi(sk)->channel != HCI_CHANNEL_CONTROL) | |
180 | continue; | |
181 | ||
182 | nskb = skb_clone(skb, GFP_ATOMIC); | |
183 | if (!nskb) | |
184 | continue; | |
1da177e4 LT |
185 | |
186 | if (sock_queue_rcv_skb(sk, nskb)) | |
187 | kfree_skb(nskb); | |
188 | } | |
470fe1b5 | 189 | |
1da177e4 LT |
190 | read_unlock(&hci_sk_list.lock); |
191 | } | |
192 | ||
cd82e61c MH |
193 | /* Send frame to monitor socket */ |
194 | void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb) | |
195 | { | |
196 | struct sock *sk; | |
197 | struct hlist_node *node; | |
198 | struct sk_buff *skb_copy = NULL; | |
199 | __le16 opcode; | |
200 | ||
201 | if (!atomic_read(&monitor_promisc)) | |
202 | return; | |
203 | ||
204 | BT_DBG("hdev %p len %d", hdev, skb->len); | |
205 | ||
206 | switch (bt_cb(skb)->pkt_type) { | |
207 | case HCI_COMMAND_PKT: | |
208 | opcode = __constant_cpu_to_le16(HCI_MON_COMMAND_PKT); | |
209 | break; | |
210 | case HCI_EVENT_PKT: | |
211 | opcode = __constant_cpu_to_le16(HCI_MON_EVENT_PKT); | |
212 | break; | |
213 | case HCI_ACLDATA_PKT: | |
214 | if (bt_cb(skb)->incoming) | |
215 | opcode = __constant_cpu_to_le16(HCI_MON_ACL_RX_PKT); | |
216 | else | |
217 | opcode = __constant_cpu_to_le16(HCI_MON_ACL_TX_PKT); | |
218 | break; | |
219 | case HCI_SCODATA_PKT: | |
220 | if (bt_cb(skb)->incoming) | |
221 | opcode = __constant_cpu_to_le16(HCI_MON_SCO_RX_PKT); | |
222 | else | |
223 | opcode = __constant_cpu_to_le16(HCI_MON_SCO_TX_PKT); | |
224 | break; | |
225 | default: | |
226 | return; | |
227 | } | |
228 | ||
229 | read_lock(&hci_sk_list.lock); | |
230 | ||
231 | sk_for_each(sk, node, &hci_sk_list.head) { | |
232 | struct sk_buff *nskb; | |
233 | ||
234 | if (sk->sk_state != BT_BOUND) | |
235 | continue; | |
236 | ||
237 | if (hci_pi(sk)->channel != HCI_CHANNEL_MONITOR) | |
238 | continue; | |
239 | ||
240 | if (!skb_copy) { | |
241 | struct hci_mon_hdr *hdr; | |
242 | ||
243 | /* Create a private copy with headroom */ | |
244 | skb_copy = __pskb_copy(skb, HCI_MON_HDR_SIZE, GFP_ATOMIC); | |
245 | if (!skb_copy) | |
246 | continue; | |
247 | ||
248 | /* Put header before the data */ | |
249 | hdr = (void *) skb_push(skb_copy, HCI_MON_HDR_SIZE); | |
250 | hdr->opcode = opcode; | |
251 | hdr->index = cpu_to_le16(hdev->id); | |
252 | hdr->len = cpu_to_le16(skb->len); | |
253 | } | |
254 | ||
255 | nskb = skb_clone(skb_copy, GFP_ATOMIC); | |
256 | if (!nskb) | |
257 | continue; | |
258 | ||
259 | if (sock_queue_rcv_skb(sk, nskb)) | |
260 | kfree_skb(nskb); | |
261 | } | |
262 | ||
263 | read_unlock(&hci_sk_list.lock); | |
264 | ||
265 | kfree_skb(skb_copy); | |
266 | } | |
267 | ||
268 | static void send_monitor_event(struct sk_buff *skb) | |
269 | { | |
270 | struct sock *sk; | |
271 | struct hlist_node *node; | |
272 | ||
273 | BT_DBG("len %d", skb->len); | |
274 | ||
275 | read_lock(&hci_sk_list.lock); | |
276 | ||
277 | sk_for_each(sk, node, &hci_sk_list.head) { | |
278 | struct sk_buff *nskb; | |
279 | ||
280 | if (sk->sk_state != BT_BOUND) | |
281 | continue; | |
282 | ||
283 | if (hci_pi(sk)->channel != HCI_CHANNEL_MONITOR) | |
284 | continue; | |
285 | ||
286 | nskb = skb_clone(skb, GFP_ATOMIC); | |
287 | if (!nskb) | |
288 | continue; | |
289 | ||
290 | if (sock_queue_rcv_skb(sk, nskb)) | |
291 | kfree_skb(nskb); | |
292 | } | |
293 | ||
294 | read_unlock(&hci_sk_list.lock); | |
295 | } | |
296 | ||
297 | static struct sk_buff *create_monitor_event(struct hci_dev *hdev, int event) | |
298 | { | |
299 | struct hci_mon_hdr *hdr; | |
300 | struct hci_mon_new_index *ni; | |
301 | struct sk_buff *skb; | |
302 | __le16 opcode; | |
303 | ||
304 | switch (event) { | |
305 | case HCI_DEV_REG: | |
306 | skb = bt_skb_alloc(HCI_MON_NEW_INDEX_SIZE, GFP_ATOMIC); | |
307 | if (!skb) | |
308 | return NULL; | |
309 | ||
310 | ni = (void *) skb_put(skb, HCI_MON_NEW_INDEX_SIZE); | |
311 | ni->type = hdev->dev_type; | |
312 | ni->bus = hdev->bus; | |
313 | bacpy(&ni->bdaddr, &hdev->bdaddr); | |
314 | memcpy(ni->name, hdev->name, 8); | |
315 | ||
316 | opcode = __constant_cpu_to_le16(HCI_MON_NEW_INDEX); | |
317 | break; | |
318 | ||
319 | case HCI_DEV_UNREG: | |
320 | skb = bt_skb_alloc(0, GFP_ATOMIC); | |
321 | if (!skb) | |
322 | return NULL; | |
323 | ||
324 | opcode = __constant_cpu_to_le16(HCI_MON_DEL_INDEX); | |
325 | break; | |
326 | ||
327 | default: | |
328 | return NULL; | |
329 | } | |
330 | ||
331 | __net_timestamp(skb); | |
332 | ||
333 | hdr = (void *) skb_push(skb, HCI_MON_HDR_SIZE); | |
334 | hdr->opcode = opcode; | |
335 | hdr->index = cpu_to_le16(hdev->id); | |
336 | hdr->len = cpu_to_le16(skb->len - HCI_MON_HDR_SIZE); | |
337 | ||
338 | return skb; | |
339 | } | |
340 | ||
341 | static void send_monitor_replay(struct sock *sk) | |
342 | { | |
343 | struct hci_dev *hdev; | |
344 | ||
345 | read_lock(&hci_dev_list_lock); | |
346 | ||
347 | list_for_each_entry(hdev, &hci_dev_list, list) { | |
348 | struct sk_buff *skb; | |
349 | ||
350 | skb = create_monitor_event(hdev, HCI_DEV_REG); | |
351 | if (!skb) | |
352 | continue; | |
353 | ||
354 | if (sock_queue_rcv_skb(sk, skb)) | |
355 | kfree_skb(skb); | |
356 | } | |
357 | ||
358 | read_unlock(&hci_dev_list_lock); | |
359 | } | |
360 | ||
040030ef MH |
361 | /* Generate internal stack event */ |
362 | static void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data) | |
363 | { | |
364 | struct hci_event_hdr *hdr; | |
365 | struct hci_ev_stack_internal *ev; | |
366 | struct sk_buff *skb; | |
367 | ||
368 | skb = bt_skb_alloc(HCI_EVENT_HDR_SIZE + sizeof(*ev) + dlen, GFP_ATOMIC); | |
369 | if (!skb) | |
370 | return; | |
371 | ||
372 | hdr = (void *) skb_put(skb, HCI_EVENT_HDR_SIZE); | |
373 | hdr->evt = HCI_EV_STACK_INTERNAL; | |
374 | hdr->plen = sizeof(*ev) + dlen; | |
375 | ||
376 | ev = (void *) skb_put(skb, sizeof(*ev) + dlen); | |
377 | ev->type = type; | |
378 | memcpy(ev->data, data, dlen); | |
379 | ||
380 | bt_cb(skb)->incoming = 1; | |
381 | __net_timestamp(skb); | |
382 | ||
383 | bt_cb(skb)->pkt_type = HCI_EVENT_PKT; | |
384 | skb->dev = (void *) hdev; | |
385 | hci_send_to_sock(hdev, skb); | |
386 | kfree_skb(skb); | |
387 | } | |
388 | ||
389 | void hci_sock_dev_event(struct hci_dev *hdev, int event) | |
390 | { | |
391 | struct hci_ev_si_device ev; | |
392 | ||
393 | BT_DBG("hdev %s event %d", hdev->name, event); | |
394 | ||
cd82e61c MH |
395 | /* Send event to monitor */ |
396 | if (atomic_read(&monitor_promisc)) { | |
397 | struct sk_buff *skb; | |
398 | ||
399 | skb = create_monitor_event(hdev, event); | |
400 | if (skb) { | |
401 | send_monitor_event(skb); | |
402 | kfree_skb(skb); | |
403 | } | |
404 | } | |
405 | ||
040030ef MH |
406 | /* Send event to sockets */ |
407 | ev.event = event; | |
408 | ev.dev_id = hdev->id; | |
409 | hci_si_event(NULL, HCI_EV_SI_DEVICE, sizeof(ev), &ev); | |
410 | ||
411 | if (event == HCI_DEV_UNREG) { | |
412 | struct sock *sk; | |
413 | struct hlist_node *node; | |
414 | ||
415 | /* Detach sockets from device */ | |
416 | read_lock(&hci_sk_list.lock); | |
417 | sk_for_each(sk, node, &hci_sk_list.head) { | |
418 | bh_lock_sock_nested(sk); | |
419 | if (hci_pi(sk)->hdev == hdev) { | |
420 | hci_pi(sk)->hdev = NULL; | |
421 | sk->sk_err = EPIPE; | |
422 | sk->sk_state = BT_OPEN; | |
423 | sk->sk_state_change(sk); | |
424 | ||
425 | hci_dev_put(hdev); | |
426 | } | |
427 | bh_unlock_sock(sk); | |
428 | } | |
429 | read_unlock(&hci_sk_list.lock); | |
430 | } | |
431 | } | |
432 | ||
1da177e4 LT |
433 | static int hci_sock_release(struct socket *sock) |
434 | { | |
435 | struct sock *sk = sock->sk; | |
7b005bd3 | 436 | struct hci_dev *hdev; |
1da177e4 LT |
437 | |
438 | BT_DBG("sock %p sk %p", sock, sk); | |
439 | ||
440 | if (!sk) | |
441 | return 0; | |
442 | ||
7b005bd3 MH |
443 | hdev = hci_pi(sk)->hdev; |
444 | ||
cd82e61c MH |
445 | if (hci_pi(sk)->channel == HCI_CHANNEL_MONITOR) |
446 | atomic_dec(&monitor_promisc); | |
447 | ||
1da177e4 LT |
448 | bt_sock_unlink(&hci_sk_list, sk); |
449 | ||
450 | if (hdev) { | |
451 | atomic_dec(&hdev->promisc); | |
452 | hci_dev_put(hdev); | |
453 | } | |
454 | ||
455 | sock_orphan(sk); | |
456 | ||
457 | skb_queue_purge(&sk->sk_receive_queue); | |
458 | skb_queue_purge(&sk->sk_write_queue); | |
459 | ||
460 | sock_put(sk); | |
461 | return 0; | |
462 | } | |
463 | ||
b2a66aad | 464 | static int hci_sock_blacklist_add(struct hci_dev *hdev, void __user *arg) |
f0358568 JH |
465 | { |
466 | bdaddr_t bdaddr; | |
5e762444 | 467 | int err; |
f0358568 JH |
468 | |
469 | if (copy_from_user(&bdaddr, arg, sizeof(bdaddr))) | |
470 | return -EFAULT; | |
471 | ||
09fd0de5 | 472 | hci_dev_lock(hdev); |
5e762444 | 473 | |
88c1fe4b | 474 | err = hci_blacklist_add(hdev, &bdaddr, 0); |
5e762444 | 475 | |
09fd0de5 | 476 | hci_dev_unlock(hdev); |
5e762444 AJ |
477 | |
478 | return err; | |
f0358568 JH |
479 | } |
480 | ||
b2a66aad | 481 | static int hci_sock_blacklist_del(struct hci_dev *hdev, void __user *arg) |
f0358568 JH |
482 | { |
483 | bdaddr_t bdaddr; | |
5e762444 | 484 | int err; |
f0358568 JH |
485 | |
486 | if (copy_from_user(&bdaddr, arg, sizeof(bdaddr))) | |
487 | return -EFAULT; | |
488 | ||
09fd0de5 | 489 | hci_dev_lock(hdev); |
5e762444 | 490 | |
88c1fe4b | 491 | err = hci_blacklist_del(hdev, &bdaddr, 0); |
5e762444 | 492 | |
09fd0de5 | 493 | hci_dev_unlock(hdev); |
5e762444 AJ |
494 | |
495 | return err; | |
f0358568 JH |
496 | } |
497 | ||
8e87d142 | 498 | /* Ioctls that require bound socket */ |
6039aa73 GP |
499 | static int hci_sock_bound_ioctl(struct sock *sk, unsigned int cmd, |
500 | unsigned long arg) | |
1da177e4 LT |
501 | { |
502 | struct hci_dev *hdev = hci_pi(sk)->hdev; | |
503 | ||
504 | if (!hdev) | |
505 | return -EBADFD; | |
506 | ||
507 | switch (cmd) { | |
508 | case HCISETRAW: | |
509 | if (!capable(CAP_NET_ADMIN)) | |
510 | return -EACCES; | |
511 | ||
512 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) | |
513 | return -EPERM; | |
514 | ||
515 | if (arg) | |
516 | set_bit(HCI_RAW, &hdev->flags); | |
517 | else | |
518 | clear_bit(HCI_RAW, &hdev->flags); | |
519 | ||
520 | return 0; | |
521 | ||
1da177e4 | 522 | case HCIGETCONNINFO: |
40be492f MH |
523 | return hci_get_conn_info(hdev, (void __user *) arg); |
524 | ||
525 | case HCIGETAUTHINFO: | |
526 | return hci_get_auth_info(hdev, (void __user *) arg); | |
1da177e4 | 527 | |
f0358568 JH |
528 | case HCIBLOCKADDR: |
529 | if (!capable(CAP_NET_ADMIN)) | |
530 | return -EACCES; | |
b2a66aad | 531 | return hci_sock_blacklist_add(hdev, (void __user *) arg); |
f0358568 JH |
532 | |
533 | case HCIUNBLOCKADDR: | |
534 | if (!capable(CAP_NET_ADMIN)) | |
535 | return -EACCES; | |
b2a66aad | 536 | return hci_sock_blacklist_del(hdev, (void __user *) arg); |
f0358568 | 537 | |
1da177e4 LT |
538 | default: |
539 | if (hdev->ioctl) | |
540 | return hdev->ioctl(hdev, cmd, arg); | |
541 | return -EINVAL; | |
542 | } | |
543 | } | |
544 | ||
545 | static int hci_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
546 | { | |
547 | struct sock *sk = sock->sk; | |
40be492f | 548 | void __user *argp = (void __user *) arg; |
1da177e4 LT |
549 | int err; |
550 | ||
551 | BT_DBG("cmd %x arg %lx", cmd, arg); | |
552 | ||
553 | switch (cmd) { | |
554 | case HCIGETDEVLIST: | |
555 | return hci_get_dev_list(argp); | |
556 | ||
557 | case HCIGETDEVINFO: | |
558 | return hci_get_dev_info(argp); | |
559 | ||
560 | case HCIGETCONNLIST: | |
561 | return hci_get_conn_list(argp); | |
562 | ||
563 | case HCIDEVUP: | |
564 | if (!capable(CAP_NET_ADMIN)) | |
565 | return -EACCES; | |
566 | return hci_dev_open(arg); | |
567 | ||
568 | case HCIDEVDOWN: | |
569 | if (!capable(CAP_NET_ADMIN)) | |
570 | return -EACCES; | |
571 | return hci_dev_close(arg); | |
572 | ||
573 | case HCIDEVRESET: | |
574 | if (!capable(CAP_NET_ADMIN)) | |
575 | return -EACCES; | |
576 | return hci_dev_reset(arg); | |
577 | ||
578 | case HCIDEVRESTAT: | |
579 | if (!capable(CAP_NET_ADMIN)) | |
580 | return -EACCES; | |
581 | return hci_dev_reset_stat(arg); | |
582 | ||
583 | case HCISETSCAN: | |
584 | case HCISETAUTH: | |
585 | case HCISETENCRYPT: | |
586 | case HCISETPTYPE: | |
587 | case HCISETLINKPOL: | |
588 | case HCISETLINKMODE: | |
589 | case HCISETACLMTU: | |
590 | case HCISETSCOMTU: | |
591 | if (!capable(CAP_NET_ADMIN)) | |
592 | return -EACCES; | |
593 | return hci_dev_cmd(cmd, argp); | |
594 | ||
595 | case HCIINQUIRY: | |
596 | return hci_inquiry(argp); | |
597 | ||
598 | default: | |
599 | lock_sock(sk); | |
600 | err = hci_sock_bound_ioctl(sk, cmd, arg); | |
601 | release_sock(sk); | |
602 | return err; | |
603 | } | |
604 | } | |
605 | ||
606 | static int hci_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len) | |
607 | { | |
0381101f | 608 | struct sockaddr_hci haddr; |
1da177e4 LT |
609 | struct sock *sk = sock->sk; |
610 | struct hci_dev *hdev = NULL; | |
0381101f | 611 | int len, err = 0; |
1da177e4 LT |
612 | |
613 | BT_DBG("sock %p sk %p", sock, sk); | |
614 | ||
0381101f JH |
615 | if (!addr) |
616 | return -EINVAL; | |
617 | ||
618 | memset(&haddr, 0, sizeof(haddr)); | |
619 | len = min_t(unsigned int, sizeof(haddr), addr_len); | |
620 | memcpy(&haddr, addr, len); | |
621 | ||
622 | if (haddr.hci_family != AF_BLUETOOTH) | |
623 | return -EINVAL; | |
624 | ||
1da177e4 LT |
625 | lock_sock(sk); |
626 | ||
7cc2ade2 | 627 | if (sk->sk_state == BT_BOUND) { |
1da177e4 LT |
628 | err = -EALREADY; |
629 | goto done; | |
630 | } | |
631 | ||
7cc2ade2 MH |
632 | switch (haddr.hci_channel) { |
633 | case HCI_CHANNEL_RAW: | |
634 | if (hci_pi(sk)->hdev) { | |
635 | err = -EALREADY; | |
1da177e4 LT |
636 | goto done; |
637 | } | |
638 | ||
7cc2ade2 MH |
639 | if (haddr.hci_dev != HCI_DEV_NONE) { |
640 | hdev = hci_dev_get(haddr.hci_dev); | |
641 | if (!hdev) { | |
642 | err = -ENODEV; | |
643 | goto done; | |
644 | } | |
645 | ||
646 | atomic_inc(&hdev->promisc); | |
647 | } | |
648 | ||
649 | hci_pi(sk)->hdev = hdev; | |
650 | break; | |
651 | ||
652 | case HCI_CHANNEL_CONTROL: | |
4b95a24c | 653 | if (haddr.hci_dev != HCI_DEV_NONE) { |
7cc2ade2 MH |
654 | err = -EINVAL; |
655 | goto done; | |
656 | } | |
657 | ||
801f13bd MH |
658 | if (!capable(CAP_NET_ADMIN)) { |
659 | err = -EPERM; | |
660 | goto done; | |
661 | } | |
662 | ||
7cc2ade2 MH |
663 | break; |
664 | ||
cd82e61c MH |
665 | case HCI_CHANNEL_MONITOR: |
666 | if (haddr.hci_dev != HCI_DEV_NONE) { | |
667 | err = -EINVAL; | |
668 | goto done; | |
669 | } | |
670 | ||
671 | if (!capable(CAP_NET_RAW)) { | |
672 | err = -EPERM; | |
673 | goto done; | |
674 | } | |
675 | ||
676 | send_monitor_replay(sk); | |
677 | ||
678 | atomic_inc(&monitor_promisc); | |
679 | break; | |
680 | ||
7cc2ade2 MH |
681 | default: |
682 | err = -EINVAL; | |
683 | goto done; | |
1da177e4 LT |
684 | } |
685 | ||
7cc2ade2 | 686 | |
0381101f | 687 | hci_pi(sk)->channel = haddr.hci_channel; |
1da177e4 LT |
688 | sk->sk_state = BT_BOUND; |
689 | ||
690 | done: | |
691 | release_sock(sk); | |
692 | return err; | |
693 | } | |
694 | ||
695 | static int hci_sock_getname(struct socket *sock, struct sockaddr *addr, int *addr_len, int peer) | |
696 | { | |
697 | struct sockaddr_hci *haddr = (struct sockaddr_hci *) addr; | |
698 | struct sock *sk = sock->sk; | |
7b005bd3 | 699 | struct hci_dev *hdev = hci_pi(sk)->hdev; |
1da177e4 LT |
700 | |
701 | BT_DBG("sock %p sk %p", sock, sk); | |
702 | ||
7b005bd3 MH |
703 | if (!hdev) |
704 | return -EBADFD; | |
705 | ||
1da177e4 LT |
706 | lock_sock(sk); |
707 | ||
708 | *addr_len = sizeof(*haddr); | |
709 | haddr->hci_family = AF_BLUETOOTH; | |
7b005bd3 | 710 | haddr->hci_dev = hdev->id; |
1da177e4 LT |
711 | |
712 | release_sock(sk); | |
713 | return 0; | |
714 | } | |
715 | ||
6039aa73 GP |
716 | static void hci_sock_cmsg(struct sock *sk, struct msghdr *msg, |
717 | struct sk_buff *skb) | |
1da177e4 LT |
718 | { |
719 | __u32 mask = hci_pi(sk)->cmsg_mask; | |
720 | ||
0d48d939 MH |
721 | if (mask & HCI_CMSG_DIR) { |
722 | int incoming = bt_cb(skb)->incoming; | |
723 | put_cmsg(msg, SOL_HCI, HCI_CMSG_DIR, sizeof(incoming), &incoming); | |
724 | } | |
1da177e4 | 725 | |
a61bbcf2 | 726 | if (mask & HCI_CMSG_TSTAMP) { |
f6e623a6 JFS |
727 | #ifdef CONFIG_COMPAT |
728 | struct compat_timeval ctv; | |
729 | #endif | |
a61bbcf2 | 730 | struct timeval tv; |
767c5eb5 MH |
731 | void *data; |
732 | int len; | |
a61bbcf2 PM |
733 | |
734 | skb_get_timestamp(skb, &tv); | |
767c5eb5 | 735 | |
1da97f83 DM |
736 | data = &tv; |
737 | len = sizeof(tv); | |
738 | #ifdef CONFIG_COMPAT | |
da88cea1 L |
739 | if (!COMPAT_USE_64BIT_TIME && |
740 | (msg->msg_flags & MSG_CMSG_COMPAT)) { | |
767c5eb5 MH |
741 | ctv.tv_sec = tv.tv_sec; |
742 | ctv.tv_usec = tv.tv_usec; | |
743 | data = &ctv; | |
744 | len = sizeof(ctv); | |
767c5eb5 | 745 | } |
1da97f83 | 746 | #endif |
767c5eb5 MH |
747 | |
748 | put_cmsg(msg, SOL_HCI, HCI_CMSG_TSTAMP, len, data); | |
a61bbcf2 | 749 | } |
1da177e4 | 750 | } |
8e87d142 YH |
751 | |
752 | static int hci_sock_recvmsg(struct kiocb *iocb, struct socket *sock, | |
3bb3c755 | 753 | struct msghdr *msg, size_t len, int flags) |
1da177e4 LT |
754 | { |
755 | int noblock = flags & MSG_DONTWAIT; | |
756 | struct sock *sk = sock->sk; | |
757 | struct sk_buff *skb; | |
758 | int copied, err; | |
759 | ||
760 | BT_DBG("sock %p, sk %p", sock, sk); | |
761 | ||
762 | if (flags & (MSG_OOB)) | |
763 | return -EOPNOTSUPP; | |
764 | ||
765 | if (sk->sk_state == BT_CLOSED) | |
766 | return 0; | |
767 | ||
70f23020 AE |
768 | skb = skb_recv_datagram(sk, flags, noblock, &err); |
769 | if (!skb) | |
1da177e4 LT |
770 | return err; |
771 | ||
772 | msg->msg_namelen = 0; | |
773 | ||
774 | copied = skb->len; | |
775 | if (len < copied) { | |
776 | msg->msg_flags |= MSG_TRUNC; | |
777 | copied = len; | |
778 | } | |
779 | ||
badff6d0 | 780 | skb_reset_transport_header(skb); |
1da177e4 LT |
781 | err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied); |
782 | ||
3a208627 MH |
783 | switch (hci_pi(sk)->channel) { |
784 | case HCI_CHANNEL_RAW: | |
785 | hci_sock_cmsg(sk, msg, skb); | |
786 | break; | |
97e0bdeb | 787 | case HCI_CHANNEL_CONTROL: |
cd82e61c MH |
788 | case HCI_CHANNEL_MONITOR: |
789 | sock_recv_timestamp(msg, sk, skb); | |
790 | break; | |
3a208627 | 791 | } |
1da177e4 LT |
792 | |
793 | skb_free_datagram(sk, skb); | |
794 | ||
795 | return err ? : copied; | |
796 | } | |
797 | ||
8e87d142 | 798 | static int hci_sock_sendmsg(struct kiocb *iocb, struct socket *sock, |
1da177e4 LT |
799 | struct msghdr *msg, size_t len) |
800 | { | |
801 | struct sock *sk = sock->sk; | |
802 | struct hci_dev *hdev; | |
803 | struct sk_buff *skb; | |
804 | int err; | |
805 | ||
806 | BT_DBG("sock %p sk %p", sock, sk); | |
807 | ||
808 | if (msg->msg_flags & MSG_OOB) | |
809 | return -EOPNOTSUPP; | |
810 | ||
811 | if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_NOSIGNAL|MSG_ERRQUEUE)) | |
812 | return -EINVAL; | |
813 | ||
814 | if (len < 4 || len > HCI_MAX_FRAME_SIZE) | |
815 | return -EINVAL; | |
816 | ||
817 | lock_sock(sk); | |
818 | ||
0381101f JH |
819 | switch (hci_pi(sk)->channel) { |
820 | case HCI_CHANNEL_RAW: | |
821 | break; | |
822 | case HCI_CHANNEL_CONTROL: | |
823 | err = mgmt_control(sk, msg, len); | |
824 | goto done; | |
cd82e61c MH |
825 | case HCI_CHANNEL_MONITOR: |
826 | err = -EOPNOTSUPP; | |
827 | goto done; | |
0381101f JH |
828 | default: |
829 | err = -EINVAL; | |
830 | goto done; | |
831 | } | |
832 | ||
70f23020 AE |
833 | hdev = hci_pi(sk)->hdev; |
834 | if (!hdev) { | |
1da177e4 LT |
835 | err = -EBADFD; |
836 | goto done; | |
837 | } | |
838 | ||
7e21addc MH |
839 | if (!test_bit(HCI_UP, &hdev->flags)) { |
840 | err = -ENETDOWN; | |
841 | goto done; | |
842 | } | |
843 | ||
70f23020 AE |
844 | skb = bt_skb_send_alloc(sk, len, msg->msg_flags & MSG_DONTWAIT, &err); |
845 | if (!skb) | |
1da177e4 LT |
846 | goto done; |
847 | ||
848 | if (memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len)) { | |
849 | err = -EFAULT; | |
850 | goto drop; | |
851 | } | |
852 | ||
0d48d939 | 853 | bt_cb(skb)->pkt_type = *((unsigned char *) skb->data); |
1da177e4 LT |
854 | skb_pull(skb, 1); |
855 | skb->dev = (void *) hdev; | |
856 | ||
0d48d939 | 857 | if (bt_cb(skb)->pkt_type == HCI_COMMAND_PKT) { |
83985319 | 858 | u16 opcode = get_unaligned_le16(skb->data); |
1da177e4 LT |
859 | u16 ogf = hci_opcode_ogf(opcode); |
860 | u16 ocf = hci_opcode_ocf(opcode); | |
861 | ||
862 | if (((ogf > HCI_SFLT_MAX_OGF) || | |
3bb3c755 GP |
863 | !hci_test_bit(ocf & HCI_FLT_OCF_BITS, |
864 | &hci_sec_filter.ocf_mask[ogf])) && | |
865 | !capable(CAP_NET_RAW)) { | |
1da177e4 LT |
866 | err = -EPERM; |
867 | goto drop; | |
868 | } | |
869 | ||
a9de9248 | 870 | if (test_bit(HCI_RAW, &hdev->flags) || (ogf == 0x3f)) { |
1da177e4 | 871 | skb_queue_tail(&hdev->raw_q, skb); |
3eff45ea | 872 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 LT |
873 | } else { |
874 | skb_queue_tail(&hdev->cmd_q, skb); | |
c347b765 | 875 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
876 | } |
877 | } else { | |
878 | if (!capable(CAP_NET_RAW)) { | |
879 | err = -EPERM; | |
880 | goto drop; | |
881 | } | |
882 | ||
883 | skb_queue_tail(&hdev->raw_q, skb); | |
3eff45ea | 884 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 LT |
885 | } |
886 | ||
887 | err = len; | |
888 | ||
889 | done: | |
890 | release_sock(sk); | |
891 | return err; | |
892 | ||
893 | drop: | |
894 | kfree_skb(skb); | |
895 | goto done; | |
896 | } | |
897 | ||
b7058842 | 898 | static int hci_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int len) |
1da177e4 LT |
899 | { |
900 | struct hci_ufilter uf = { .opcode = 0 }; | |
901 | struct sock *sk = sock->sk; | |
902 | int err = 0, opt = 0; | |
903 | ||
904 | BT_DBG("sk %p, opt %d", sk, optname); | |
905 | ||
906 | lock_sock(sk); | |
907 | ||
2f39cdb7 MH |
908 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) { |
909 | err = -EINVAL; | |
910 | goto done; | |
911 | } | |
912 | ||
1da177e4 LT |
913 | switch (optname) { |
914 | case HCI_DATA_DIR: | |
915 | if (get_user(opt, (int __user *)optval)) { | |
916 | err = -EFAULT; | |
917 | break; | |
918 | } | |
919 | ||
920 | if (opt) | |
921 | hci_pi(sk)->cmsg_mask |= HCI_CMSG_DIR; | |
922 | else | |
923 | hci_pi(sk)->cmsg_mask &= ~HCI_CMSG_DIR; | |
924 | break; | |
925 | ||
926 | case HCI_TIME_STAMP: | |
927 | if (get_user(opt, (int __user *)optval)) { | |
928 | err = -EFAULT; | |
929 | break; | |
930 | } | |
931 | ||
932 | if (opt) | |
933 | hci_pi(sk)->cmsg_mask |= HCI_CMSG_TSTAMP; | |
934 | else | |
935 | hci_pi(sk)->cmsg_mask &= ~HCI_CMSG_TSTAMP; | |
936 | break; | |
937 | ||
938 | case HCI_FILTER: | |
0878b666 MH |
939 | { |
940 | struct hci_filter *f = &hci_pi(sk)->filter; | |
941 | ||
942 | uf.type_mask = f->type_mask; | |
943 | uf.opcode = f->opcode; | |
944 | uf.event_mask[0] = *((u32 *) f->event_mask + 0); | |
945 | uf.event_mask[1] = *((u32 *) f->event_mask + 1); | |
946 | } | |
947 | ||
1da177e4 LT |
948 | len = min_t(unsigned int, len, sizeof(uf)); |
949 | if (copy_from_user(&uf, optval, len)) { | |
950 | err = -EFAULT; | |
951 | break; | |
952 | } | |
953 | ||
954 | if (!capable(CAP_NET_RAW)) { | |
955 | uf.type_mask &= hci_sec_filter.type_mask; | |
956 | uf.event_mask[0] &= *((u32 *) hci_sec_filter.event_mask + 0); | |
957 | uf.event_mask[1] &= *((u32 *) hci_sec_filter.event_mask + 1); | |
958 | } | |
959 | ||
960 | { | |
961 | struct hci_filter *f = &hci_pi(sk)->filter; | |
962 | ||
963 | f->type_mask = uf.type_mask; | |
964 | f->opcode = uf.opcode; | |
965 | *((u32 *) f->event_mask + 0) = uf.event_mask[0]; | |
966 | *((u32 *) f->event_mask + 1) = uf.event_mask[1]; | |
967 | } | |
8e87d142 | 968 | break; |
1da177e4 LT |
969 | |
970 | default: | |
971 | err = -ENOPROTOOPT; | |
972 | break; | |
973 | } | |
974 | ||
2f39cdb7 | 975 | done: |
1da177e4 LT |
976 | release_sock(sk); |
977 | return err; | |
978 | } | |
979 | ||
980 | static int hci_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen) | |
981 | { | |
982 | struct hci_ufilter uf; | |
983 | struct sock *sk = sock->sk; | |
cedc5469 MH |
984 | int len, opt, err = 0; |
985 | ||
986 | BT_DBG("sk %p, opt %d", sk, optname); | |
1da177e4 LT |
987 | |
988 | if (get_user(len, optlen)) | |
989 | return -EFAULT; | |
990 | ||
cedc5469 MH |
991 | lock_sock(sk); |
992 | ||
993 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) { | |
994 | err = -EINVAL; | |
995 | goto done; | |
996 | } | |
997 | ||
1da177e4 LT |
998 | switch (optname) { |
999 | case HCI_DATA_DIR: | |
1000 | if (hci_pi(sk)->cmsg_mask & HCI_CMSG_DIR) | |
1001 | opt = 1; | |
8e87d142 | 1002 | else |
1da177e4 LT |
1003 | opt = 0; |
1004 | ||
1005 | if (put_user(opt, optval)) | |
cedc5469 | 1006 | err = -EFAULT; |
1da177e4 LT |
1007 | break; |
1008 | ||
1009 | case HCI_TIME_STAMP: | |
1010 | if (hci_pi(sk)->cmsg_mask & HCI_CMSG_TSTAMP) | |
1011 | opt = 1; | |
8e87d142 | 1012 | else |
1da177e4 LT |
1013 | opt = 0; |
1014 | ||
1015 | if (put_user(opt, optval)) | |
cedc5469 | 1016 | err = -EFAULT; |
1da177e4 LT |
1017 | break; |
1018 | ||
1019 | case HCI_FILTER: | |
1020 | { | |
1021 | struct hci_filter *f = &hci_pi(sk)->filter; | |
1022 | ||
1023 | uf.type_mask = f->type_mask; | |
1024 | uf.opcode = f->opcode; | |
1025 | uf.event_mask[0] = *((u32 *) f->event_mask + 0); | |
1026 | uf.event_mask[1] = *((u32 *) f->event_mask + 1); | |
1027 | } | |
1028 | ||
1029 | len = min_t(unsigned int, len, sizeof(uf)); | |
1030 | if (copy_to_user(optval, &uf, len)) | |
cedc5469 | 1031 | err = -EFAULT; |
1da177e4 LT |
1032 | break; |
1033 | ||
1034 | default: | |
cedc5469 | 1035 | err = -ENOPROTOOPT; |
1da177e4 LT |
1036 | break; |
1037 | } | |
1038 | ||
cedc5469 MH |
1039 | done: |
1040 | release_sock(sk); | |
1041 | return err; | |
1da177e4 LT |
1042 | } |
1043 | ||
90ddc4f0 | 1044 | static const struct proto_ops hci_sock_ops = { |
1da177e4 LT |
1045 | .family = PF_BLUETOOTH, |
1046 | .owner = THIS_MODULE, | |
1047 | .release = hci_sock_release, | |
1048 | .bind = hci_sock_bind, | |
1049 | .getname = hci_sock_getname, | |
1050 | .sendmsg = hci_sock_sendmsg, | |
1051 | .recvmsg = hci_sock_recvmsg, | |
1052 | .ioctl = hci_sock_ioctl, | |
1053 | .poll = datagram_poll, | |
1054 | .listen = sock_no_listen, | |
1055 | .shutdown = sock_no_shutdown, | |
1056 | .setsockopt = hci_sock_setsockopt, | |
1057 | .getsockopt = hci_sock_getsockopt, | |
1058 | .connect = sock_no_connect, | |
1059 | .socketpair = sock_no_socketpair, | |
1060 | .accept = sock_no_accept, | |
1061 | .mmap = sock_no_mmap | |
1062 | }; | |
1063 | ||
1064 | static struct proto hci_sk_proto = { | |
1065 | .name = "HCI", | |
1066 | .owner = THIS_MODULE, | |
1067 | .obj_size = sizeof(struct hci_pinfo) | |
1068 | }; | |
1069 | ||
3f378b68 EP |
1070 | static int hci_sock_create(struct net *net, struct socket *sock, int protocol, |
1071 | int kern) | |
1da177e4 LT |
1072 | { |
1073 | struct sock *sk; | |
1074 | ||
1075 | BT_DBG("sock %p", sock); | |
1076 | ||
1077 | if (sock->type != SOCK_RAW) | |
1078 | return -ESOCKTNOSUPPORT; | |
1079 | ||
1080 | sock->ops = &hci_sock_ops; | |
1081 | ||
6257ff21 | 1082 | sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &hci_sk_proto); |
1da177e4 LT |
1083 | if (!sk) |
1084 | return -ENOMEM; | |
1085 | ||
1086 | sock_init_data(sock, sk); | |
1087 | ||
1088 | sock_reset_flag(sk, SOCK_ZAPPED); | |
1089 | ||
1090 | sk->sk_protocol = protocol; | |
1091 | ||
1092 | sock->state = SS_UNCONNECTED; | |
1093 | sk->sk_state = BT_OPEN; | |
1094 | ||
1095 | bt_sock_link(&hci_sk_list, sk); | |
1096 | return 0; | |
1097 | } | |
1098 | ||
ec1b4cf7 | 1099 | static const struct net_proto_family hci_sock_family_ops = { |
1da177e4 LT |
1100 | .family = PF_BLUETOOTH, |
1101 | .owner = THIS_MODULE, | |
1102 | .create = hci_sock_create, | |
1103 | }; | |
1104 | ||
1da177e4 LT |
1105 | int __init hci_sock_init(void) |
1106 | { | |
1107 | int err; | |
1108 | ||
1109 | err = proto_register(&hci_sk_proto, 0); | |
1110 | if (err < 0) | |
1111 | return err; | |
1112 | ||
1113 | err = bt_sock_register(BTPROTO_HCI, &hci_sock_family_ops); | |
1114 | if (err < 0) | |
1115 | goto error; | |
1116 | ||
1da177e4 LT |
1117 | BT_INFO("HCI socket layer initialized"); |
1118 | ||
1119 | return 0; | |
1120 | ||
1121 | error: | |
1122 | BT_ERR("HCI socket registration failed"); | |
1123 | proto_unregister(&hci_sk_proto); | |
1124 | return err; | |
1125 | } | |
1126 | ||
b7440a14 | 1127 | void hci_sock_cleanup(void) |
1da177e4 LT |
1128 | { |
1129 | if (bt_sock_unregister(BTPROTO_HCI) < 0) | |
1130 | BT_ERR("HCI socket unregistration failed"); | |
1131 | ||
1da177e4 | 1132 | proto_unregister(&hci_sk_proto); |
1da177e4 | 1133 | } |