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