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 | ||
8c520a59 | 27 | #include <linux/export.h> |
1da177e4 LT |
28 | #include <asm/unaligned.h> |
29 | ||
30 | #include <net/bluetooth/bluetooth.h> | |
31 | #include <net/bluetooth/hci_core.h> | |
cd82e61c | 32 | #include <net/bluetooth/hci_mon.h> |
1da177e4 | 33 | |
cd82e61c MH |
34 | static atomic_t monitor_promisc = ATOMIC_INIT(0); |
35 | ||
1da177e4 LT |
36 | /* ----- HCI socket interface ----- */ |
37 | ||
38 | static inline int hci_test_bit(int nr, void *addr) | |
39 | { | |
40 | return *((__u32 *) addr + (nr >> 5)) & ((__u32) 1 << (nr & 31)); | |
41 | } | |
42 | ||
43 | /* Security filter */ | |
44 | static struct hci_sec_filter hci_sec_filter = { | |
45 | /* Packet types */ | |
46 | 0x10, | |
47 | /* Events */ | |
dd7f5527 | 48 | { 0x1000d9fe, 0x0000b00c }, |
1da177e4 LT |
49 | /* Commands */ |
50 | { | |
51 | { 0x0 }, | |
52 | /* OGF_LINK_CTL */ | |
7c631a67 | 53 | { 0xbe000006, 0x00000001, 0x00000000, 0x00 }, |
1da177e4 | 54 | /* OGF_LINK_POLICY */ |
7c631a67 | 55 | { 0x00005200, 0x00000000, 0x00000000, 0x00 }, |
1da177e4 | 56 | /* OGF_HOST_CTL */ |
7c631a67 | 57 | { 0xaab00200, 0x2b402aaa, 0x05220154, 0x00 }, |
1da177e4 | 58 | /* OGF_INFO_PARAM */ |
7c631a67 | 59 | { 0x000002be, 0x00000000, 0x00000000, 0x00 }, |
1da177e4 | 60 | /* OGF_STATUS_PARAM */ |
7c631a67 | 61 | { 0x000000ea, 0x00000000, 0x00000000, 0x00 } |
1da177e4 LT |
62 | } |
63 | }; | |
64 | ||
65 | static struct bt_sock_list hci_sk_list = { | |
d5fb2962 | 66 | .lock = __RW_LOCK_UNLOCKED(hci_sk_list.lock) |
1da177e4 LT |
67 | }; |
68 | ||
f81fe64f MH |
69 | static bool is_filtered_packet(struct sock *sk, struct sk_buff *skb) |
70 | { | |
71 | struct hci_filter *flt; | |
72 | int flt_type, flt_event; | |
73 | ||
74 | /* Apply filter */ | |
75 | flt = &hci_pi(sk)->filter; | |
76 | ||
77 | if (bt_cb(skb)->pkt_type == HCI_VENDOR_PKT) | |
78 | flt_type = 0; | |
79 | else | |
80 | flt_type = bt_cb(skb)->pkt_type & HCI_FLT_TYPE_BITS; | |
81 | ||
82 | if (!test_bit(flt_type, &flt->type_mask)) | |
83 | return true; | |
84 | ||
85 | /* Extra filter for event packets only */ | |
86 | if (bt_cb(skb)->pkt_type != HCI_EVENT_PKT) | |
87 | return false; | |
88 | ||
89 | flt_event = (*(__u8 *)skb->data & HCI_FLT_EVENT_BITS); | |
90 | ||
91 | if (!hci_test_bit(flt_event, &flt->event_mask)) | |
92 | return true; | |
93 | ||
94 | /* Check filter only when opcode is set */ | |
95 | if (!flt->opcode) | |
96 | return false; | |
97 | ||
98 | if (flt_event == HCI_EV_CMD_COMPLETE && | |
99 | flt->opcode != get_unaligned((__le16 *)(skb->data + 3))) | |
100 | return true; | |
101 | ||
102 | if (flt_event == HCI_EV_CMD_STATUS && | |
103 | flt->opcode != get_unaligned((__le16 *)(skb->data + 4))) | |
104 | return true; | |
105 | ||
106 | return false; | |
107 | } | |
108 | ||
1da177e4 | 109 | /* Send frame to RAW socket */ |
470fe1b5 | 110 | void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
111 | { |
112 | struct sock *sk; | |
e0edf373 | 113 | struct sk_buff *skb_copy = NULL; |
1da177e4 LT |
114 | |
115 | BT_DBG("hdev %p len %d", hdev, skb->len); | |
116 | ||
117 | read_lock(&hci_sk_list.lock); | |
470fe1b5 | 118 | |
b67bfe0d | 119 | sk_for_each(sk, &hci_sk_list.head) { |
1da177e4 LT |
120 | struct sk_buff *nskb; |
121 | ||
122 | if (sk->sk_state != BT_BOUND || hci_pi(sk)->hdev != hdev) | |
123 | continue; | |
124 | ||
125 | /* Don't send frame to the socket it came from */ | |
126 | if (skb->sk == sk) | |
127 | continue; | |
128 | ||
23500189 MH |
129 | if (hci_pi(sk)->channel == HCI_CHANNEL_RAW) { |
130 | if (is_filtered_packet(sk, skb)) | |
131 | continue; | |
132 | } else if (hci_pi(sk)->channel == HCI_CHANNEL_USER) { | |
133 | if (!bt_cb(skb)->incoming) | |
134 | continue; | |
135 | if (bt_cb(skb)->pkt_type != HCI_EVENT_PKT && | |
136 | bt_cb(skb)->pkt_type != HCI_ACLDATA_PKT && | |
137 | bt_cb(skb)->pkt_type != HCI_SCODATA_PKT) | |
138 | continue; | |
139 | } else { | |
140 | /* Don't send frame to other channel types */ | |
1da177e4 | 141 | continue; |
23500189 | 142 | } |
1da177e4 | 143 | |
e0edf373 MH |
144 | if (!skb_copy) { |
145 | /* Create a private copy with headroom */ | |
146 | skb_copy = __pskb_copy(skb, 1, GFP_ATOMIC); | |
147 | if (!skb_copy) | |
148 | continue; | |
149 | ||
150 | /* Put type byte before the data */ | |
151 | memcpy(skb_push(skb_copy, 1), &bt_cb(skb)->pkt_type, 1); | |
152 | } | |
153 | ||
154 | nskb = skb_clone(skb_copy, GFP_ATOMIC); | |
70f23020 | 155 | if (!nskb) |
1da177e4 LT |
156 | continue; |
157 | ||
470fe1b5 MH |
158 | if (sock_queue_rcv_skb(sk, nskb)) |
159 | kfree_skb(nskb); | |
160 | } | |
161 | ||
162 | read_unlock(&hci_sk_list.lock); | |
e0edf373 MH |
163 | |
164 | kfree_skb(skb_copy); | |
470fe1b5 MH |
165 | } |
166 | ||
167 | /* Send frame to control socket */ | |
168 | void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk) | |
169 | { | |
170 | struct sock *sk; | |
470fe1b5 MH |
171 | |
172 | BT_DBG("len %d", skb->len); | |
173 | ||
174 | read_lock(&hci_sk_list.lock); | |
175 | ||
b67bfe0d | 176 | sk_for_each(sk, &hci_sk_list.head) { |
470fe1b5 MH |
177 | struct sk_buff *nskb; |
178 | ||
179 | /* Skip the original socket */ | |
180 | if (sk == skip_sk) | |
181 | continue; | |
182 | ||
183 | if (sk->sk_state != BT_BOUND) | |
184 | continue; | |
185 | ||
186 | if (hci_pi(sk)->channel != HCI_CHANNEL_CONTROL) | |
187 | continue; | |
188 | ||
189 | nskb = skb_clone(skb, GFP_ATOMIC); | |
190 | if (!nskb) | |
191 | continue; | |
1da177e4 LT |
192 | |
193 | if (sock_queue_rcv_skb(sk, nskb)) | |
194 | kfree_skb(nskb); | |
195 | } | |
470fe1b5 | 196 | |
1da177e4 LT |
197 | read_unlock(&hci_sk_list.lock); |
198 | } | |
199 | ||
cd82e61c MH |
200 | /* Send frame to monitor socket */ |
201 | void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb) | |
202 | { | |
203 | struct sock *sk; | |
cd82e61c MH |
204 | struct sk_buff *skb_copy = NULL; |
205 | __le16 opcode; | |
206 | ||
207 | if (!atomic_read(&monitor_promisc)) | |
208 | return; | |
209 | ||
210 | BT_DBG("hdev %p len %d", hdev, skb->len); | |
211 | ||
212 | switch (bt_cb(skb)->pkt_type) { | |
213 | case HCI_COMMAND_PKT: | |
dcf4adbf | 214 | opcode = cpu_to_le16(HCI_MON_COMMAND_PKT); |
cd82e61c MH |
215 | break; |
216 | case HCI_EVENT_PKT: | |
dcf4adbf | 217 | opcode = cpu_to_le16(HCI_MON_EVENT_PKT); |
cd82e61c MH |
218 | break; |
219 | case HCI_ACLDATA_PKT: | |
220 | if (bt_cb(skb)->incoming) | |
dcf4adbf | 221 | opcode = cpu_to_le16(HCI_MON_ACL_RX_PKT); |
cd82e61c | 222 | else |
dcf4adbf | 223 | opcode = cpu_to_le16(HCI_MON_ACL_TX_PKT); |
cd82e61c MH |
224 | break; |
225 | case HCI_SCODATA_PKT: | |
226 | if (bt_cb(skb)->incoming) | |
dcf4adbf | 227 | opcode = cpu_to_le16(HCI_MON_SCO_RX_PKT); |
cd82e61c | 228 | else |
dcf4adbf | 229 | opcode = cpu_to_le16(HCI_MON_SCO_TX_PKT); |
cd82e61c MH |
230 | break; |
231 | default: | |
232 | return; | |
233 | } | |
234 | ||
235 | read_lock(&hci_sk_list.lock); | |
236 | ||
b67bfe0d | 237 | sk_for_each(sk, &hci_sk_list.head) { |
cd82e61c MH |
238 | struct sk_buff *nskb; |
239 | ||
240 | if (sk->sk_state != BT_BOUND) | |
241 | continue; | |
242 | ||
243 | if (hci_pi(sk)->channel != HCI_CHANNEL_MONITOR) | |
244 | continue; | |
245 | ||
246 | if (!skb_copy) { | |
247 | struct hci_mon_hdr *hdr; | |
248 | ||
249 | /* Create a private copy with headroom */ | |
8fc9ced3 GP |
250 | skb_copy = __pskb_copy(skb, HCI_MON_HDR_SIZE, |
251 | GFP_ATOMIC); | |
cd82e61c MH |
252 | if (!skb_copy) |
253 | continue; | |
254 | ||
255 | /* Put header before the data */ | |
256 | hdr = (void *) skb_push(skb_copy, HCI_MON_HDR_SIZE); | |
257 | hdr->opcode = opcode; | |
258 | hdr->index = cpu_to_le16(hdev->id); | |
259 | hdr->len = cpu_to_le16(skb->len); | |
260 | } | |
261 | ||
262 | nskb = skb_clone(skb_copy, GFP_ATOMIC); | |
263 | if (!nskb) | |
264 | continue; | |
265 | ||
266 | if (sock_queue_rcv_skb(sk, nskb)) | |
267 | kfree_skb(nskb); | |
268 | } | |
269 | ||
270 | read_unlock(&hci_sk_list.lock); | |
271 | ||
272 | kfree_skb(skb_copy); | |
273 | } | |
274 | ||
275 | static void send_monitor_event(struct sk_buff *skb) | |
276 | { | |
277 | struct sock *sk; | |
cd82e61c MH |
278 | |
279 | BT_DBG("len %d", skb->len); | |
280 | ||
281 | read_lock(&hci_sk_list.lock); | |
282 | ||
b67bfe0d | 283 | sk_for_each(sk, &hci_sk_list.head) { |
cd82e61c MH |
284 | struct sk_buff *nskb; |
285 | ||
286 | if (sk->sk_state != BT_BOUND) | |
287 | continue; | |
288 | ||
289 | if (hci_pi(sk)->channel != HCI_CHANNEL_MONITOR) | |
290 | continue; | |
291 | ||
292 | nskb = skb_clone(skb, GFP_ATOMIC); | |
293 | if (!nskb) | |
294 | continue; | |
295 | ||
296 | if (sock_queue_rcv_skb(sk, nskb)) | |
297 | kfree_skb(nskb); | |
298 | } | |
299 | ||
300 | read_unlock(&hci_sk_list.lock); | |
301 | } | |
302 | ||
303 | static struct sk_buff *create_monitor_event(struct hci_dev *hdev, int event) | |
304 | { | |
305 | struct hci_mon_hdr *hdr; | |
306 | struct hci_mon_new_index *ni; | |
307 | struct sk_buff *skb; | |
308 | __le16 opcode; | |
309 | ||
310 | switch (event) { | |
311 | case HCI_DEV_REG: | |
312 | skb = bt_skb_alloc(HCI_MON_NEW_INDEX_SIZE, GFP_ATOMIC); | |
313 | if (!skb) | |
314 | return NULL; | |
315 | ||
316 | ni = (void *) skb_put(skb, HCI_MON_NEW_INDEX_SIZE); | |
317 | ni->type = hdev->dev_type; | |
318 | ni->bus = hdev->bus; | |
319 | bacpy(&ni->bdaddr, &hdev->bdaddr); | |
320 | memcpy(ni->name, hdev->name, 8); | |
321 | ||
dcf4adbf | 322 | opcode = cpu_to_le16(HCI_MON_NEW_INDEX); |
cd82e61c MH |
323 | break; |
324 | ||
325 | case HCI_DEV_UNREG: | |
326 | skb = bt_skb_alloc(0, GFP_ATOMIC); | |
327 | if (!skb) | |
328 | return NULL; | |
329 | ||
dcf4adbf | 330 | opcode = cpu_to_le16(HCI_MON_DEL_INDEX); |
cd82e61c MH |
331 | break; |
332 | ||
333 | default: | |
334 | return NULL; | |
335 | } | |
336 | ||
337 | __net_timestamp(skb); | |
338 | ||
339 | hdr = (void *) skb_push(skb, HCI_MON_HDR_SIZE); | |
340 | hdr->opcode = opcode; | |
341 | hdr->index = cpu_to_le16(hdev->id); | |
342 | hdr->len = cpu_to_le16(skb->len - HCI_MON_HDR_SIZE); | |
343 | ||
344 | return skb; | |
345 | } | |
346 | ||
347 | static void send_monitor_replay(struct sock *sk) | |
348 | { | |
349 | struct hci_dev *hdev; | |
350 | ||
351 | read_lock(&hci_dev_list_lock); | |
352 | ||
353 | list_for_each_entry(hdev, &hci_dev_list, list) { | |
354 | struct sk_buff *skb; | |
355 | ||
356 | skb = create_monitor_event(hdev, HCI_DEV_REG); | |
357 | if (!skb) | |
358 | continue; | |
359 | ||
360 | if (sock_queue_rcv_skb(sk, skb)) | |
361 | kfree_skb(skb); | |
362 | } | |
363 | ||
364 | read_unlock(&hci_dev_list_lock); | |
365 | } | |
366 | ||
040030ef MH |
367 | /* Generate internal stack event */ |
368 | static void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data) | |
369 | { | |
370 | struct hci_event_hdr *hdr; | |
371 | struct hci_ev_stack_internal *ev; | |
372 | struct sk_buff *skb; | |
373 | ||
374 | skb = bt_skb_alloc(HCI_EVENT_HDR_SIZE + sizeof(*ev) + dlen, GFP_ATOMIC); | |
375 | if (!skb) | |
376 | return; | |
377 | ||
378 | hdr = (void *) skb_put(skb, HCI_EVENT_HDR_SIZE); | |
379 | hdr->evt = HCI_EV_STACK_INTERNAL; | |
380 | hdr->plen = sizeof(*ev) + dlen; | |
381 | ||
382 | ev = (void *) skb_put(skb, sizeof(*ev) + dlen); | |
383 | ev->type = type; | |
384 | memcpy(ev->data, data, dlen); | |
385 | ||
386 | bt_cb(skb)->incoming = 1; | |
387 | __net_timestamp(skb); | |
388 | ||
389 | bt_cb(skb)->pkt_type = HCI_EVENT_PKT; | |
040030ef MH |
390 | hci_send_to_sock(hdev, skb); |
391 | kfree_skb(skb); | |
392 | } | |
393 | ||
394 | void hci_sock_dev_event(struct hci_dev *hdev, int event) | |
395 | { | |
396 | struct hci_ev_si_device ev; | |
397 | ||
398 | BT_DBG("hdev %s event %d", hdev->name, event); | |
399 | ||
cd82e61c MH |
400 | /* Send event to monitor */ |
401 | if (atomic_read(&monitor_promisc)) { | |
402 | struct sk_buff *skb; | |
403 | ||
404 | skb = create_monitor_event(hdev, event); | |
405 | if (skb) { | |
406 | send_monitor_event(skb); | |
407 | kfree_skb(skb); | |
408 | } | |
409 | } | |
410 | ||
040030ef MH |
411 | /* Send event to sockets */ |
412 | ev.event = event; | |
413 | ev.dev_id = hdev->id; | |
414 | hci_si_event(NULL, HCI_EV_SI_DEVICE, sizeof(ev), &ev); | |
415 | ||
416 | if (event == HCI_DEV_UNREG) { | |
417 | struct sock *sk; | |
040030ef MH |
418 | |
419 | /* Detach sockets from device */ | |
420 | read_lock(&hci_sk_list.lock); | |
b67bfe0d | 421 | sk_for_each(sk, &hci_sk_list.head) { |
040030ef MH |
422 | bh_lock_sock_nested(sk); |
423 | if (hci_pi(sk)->hdev == hdev) { | |
424 | hci_pi(sk)->hdev = NULL; | |
425 | sk->sk_err = EPIPE; | |
426 | sk->sk_state = BT_OPEN; | |
427 | sk->sk_state_change(sk); | |
428 | ||
429 | hci_dev_put(hdev); | |
430 | } | |
431 | bh_unlock_sock(sk); | |
432 | } | |
433 | read_unlock(&hci_sk_list.lock); | |
434 | } | |
435 | } | |
436 | ||
1da177e4 LT |
437 | static int hci_sock_release(struct socket *sock) |
438 | { | |
439 | struct sock *sk = sock->sk; | |
7b005bd3 | 440 | struct hci_dev *hdev; |
1da177e4 LT |
441 | |
442 | BT_DBG("sock %p sk %p", sock, sk); | |
443 | ||
444 | if (!sk) | |
445 | return 0; | |
446 | ||
7b005bd3 MH |
447 | hdev = hci_pi(sk)->hdev; |
448 | ||
cd82e61c MH |
449 | if (hci_pi(sk)->channel == HCI_CHANNEL_MONITOR) |
450 | atomic_dec(&monitor_promisc); | |
451 | ||
1da177e4 LT |
452 | bt_sock_unlink(&hci_sk_list, sk); |
453 | ||
454 | if (hdev) { | |
23500189 MH |
455 | if (hci_pi(sk)->channel == HCI_CHANNEL_USER) { |
456 | mgmt_index_added(hdev); | |
457 | clear_bit(HCI_USER_CHANNEL, &hdev->dev_flags); | |
458 | hci_dev_close(hdev->id); | |
459 | } | |
460 | ||
1da177e4 LT |
461 | atomic_dec(&hdev->promisc); |
462 | hci_dev_put(hdev); | |
463 | } | |
464 | ||
465 | sock_orphan(sk); | |
466 | ||
467 | skb_queue_purge(&sk->sk_receive_queue); | |
468 | skb_queue_purge(&sk->sk_write_queue); | |
469 | ||
470 | sock_put(sk); | |
471 | return 0; | |
472 | } | |
473 | ||
b2a66aad | 474 | static int hci_sock_blacklist_add(struct hci_dev *hdev, void __user *arg) |
f0358568 JH |
475 | { |
476 | bdaddr_t bdaddr; | |
5e762444 | 477 | int err; |
f0358568 JH |
478 | |
479 | if (copy_from_user(&bdaddr, arg, sizeof(bdaddr))) | |
480 | return -EFAULT; | |
481 | ||
09fd0de5 | 482 | hci_dev_lock(hdev); |
5e762444 | 483 | |
e71f41bc | 484 | err = hci_blacklist_add(hdev, &bdaddr, BDADDR_BREDR); |
5e762444 | 485 | |
09fd0de5 | 486 | hci_dev_unlock(hdev); |
5e762444 AJ |
487 | |
488 | return err; | |
f0358568 JH |
489 | } |
490 | ||
b2a66aad | 491 | static int hci_sock_blacklist_del(struct hci_dev *hdev, void __user *arg) |
f0358568 JH |
492 | { |
493 | bdaddr_t bdaddr; | |
5e762444 | 494 | int err; |
f0358568 JH |
495 | |
496 | if (copy_from_user(&bdaddr, arg, sizeof(bdaddr))) | |
497 | return -EFAULT; | |
498 | ||
09fd0de5 | 499 | hci_dev_lock(hdev); |
5e762444 | 500 | |
e71f41bc | 501 | err = hci_blacklist_del(hdev, &bdaddr, BDADDR_BREDR); |
5e762444 | 502 | |
09fd0de5 | 503 | hci_dev_unlock(hdev); |
5e762444 AJ |
504 | |
505 | return err; | |
f0358568 JH |
506 | } |
507 | ||
8e87d142 | 508 | /* Ioctls that require bound socket */ |
6039aa73 GP |
509 | static int hci_sock_bound_ioctl(struct sock *sk, unsigned int cmd, |
510 | unsigned long arg) | |
1da177e4 LT |
511 | { |
512 | struct hci_dev *hdev = hci_pi(sk)->hdev; | |
513 | ||
514 | if (!hdev) | |
515 | return -EBADFD; | |
516 | ||
0736cfa8 MH |
517 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) |
518 | return -EBUSY; | |
519 | ||
5b69bef5 MH |
520 | if (hdev->dev_type != HCI_BREDR) |
521 | return -EOPNOTSUPP; | |
522 | ||
1da177e4 LT |
523 | switch (cmd) { |
524 | case HCISETRAW: | |
525 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 526 | return -EPERM; |
1da177e4 LT |
527 | |
528 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) | |
529 | return -EPERM; | |
530 | ||
531 | if (arg) | |
532 | set_bit(HCI_RAW, &hdev->flags); | |
533 | else | |
534 | clear_bit(HCI_RAW, &hdev->flags); | |
535 | ||
536 | return 0; | |
537 | ||
1da177e4 | 538 | case HCIGETCONNINFO: |
40be492f MH |
539 | return hci_get_conn_info(hdev, (void __user *) arg); |
540 | ||
541 | case HCIGETAUTHINFO: | |
542 | return hci_get_auth_info(hdev, (void __user *) arg); | |
1da177e4 | 543 | |
f0358568 JH |
544 | case HCIBLOCKADDR: |
545 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 546 | return -EPERM; |
b2a66aad | 547 | return hci_sock_blacklist_add(hdev, (void __user *) arg); |
f0358568 JH |
548 | |
549 | case HCIUNBLOCKADDR: | |
550 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 551 | return -EPERM; |
b2a66aad | 552 | return hci_sock_blacklist_del(hdev, (void __user *) arg); |
1da177e4 | 553 | } |
0736cfa8 | 554 | |
324d36ed | 555 | return -ENOIOCTLCMD; |
1da177e4 LT |
556 | } |
557 | ||
8fc9ced3 GP |
558 | static int hci_sock_ioctl(struct socket *sock, unsigned int cmd, |
559 | unsigned long arg) | |
1da177e4 | 560 | { |
40be492f | 561 | void __user *argp = (void __user *) arg; |
0736cfa8 | 562 | struct sock *sk = sock->sk; |
1da177e4 LT |
563 | int err; |
564 | ||
565 | BT_DBG("cmd %x arg %lx", cmd, arg); | |
566 | ||
c1c4f956 MH |
567 | lock_sock(sk); |
568 | ||
569 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) { | |
570 | err = -EBADFD; | |
571 | goto done; | |
572 | } | |
573 | ||
574 | release_sock(sk); | |
575 | ||
1da177e4 LT |
576 | switch (cmd) { |
577 | case HCIGETDEVLIST: | |
578 | return hci_get_dev_list(argp); | |
579 | ||
580 | case HCIGETDEVINFO: | |
581 | return hci_get_dev_info(argp); | |
582 | ||
583 | case HCIGETCONNLIST: | |
584 | return hci_get_conn_list(argp); | |
585 | ||
586 | case HCIDEVUP: | |
587 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 588 | return -EPERM; |
1da177e4 LT |
589 | return hci_dev_open(arg); |
590 | ||
591 | case HCIDEVDOWN: | |
592 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 593 | return -EPERM; |
1da177e4 LT |
594 | return hci_dev_close(arg); |
595 | ||
596 | case HCIDEVRESET: | |
597 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 598 | return -EPERM; |
1da177e4 LT |
599 | return hci_dev_reset(arg); |
600 | ||
601 | case HCIDEVRESTAT: | |
602 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 603 | return -EPERM; |
1da177e4 LT |
604 | return hci_dev_reset_stat(arg); |
605 | ||
606 | case HCISETSCAN: | |
607 | case HCISETAUTH: | |
608 | case HCISETENCRYPT: | |
609 | case HCISETPTYPE: | |
610 | case HCISETLINKPOL: | |
611 | case HCISETLINKMODE: | |
612 | case HCISETACLMTU: | |
613 | case HCISETSCOMTU: | |
614 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 615 | return -EPERM; |
1da177e4 LT |
616 | return hci_dev_cmd(cmd, argp); |
617 | ||
618 | case HCIINQUIRY: | |
619 | return hci_inquiry(argp); | |
1da177e4 | 620 | } |
c1c4f956 MH |
621 | |
622 | lock_sock(sk); | |
623 | ||
624 | err = hci_sock_bound_ioctl(sk, cmd, arg); | |
625 | ||
626 | done: | |
627 | release_sock(sk); | |
628 | return err; | |
1da177e4 LT |
629 | } |
630 | ||
8fc9ced3 GP |
631 | static int hci_sock_bind(struct socket *sock, struct sockaddr *addr, |
632 | int addr_len) | |
1da177e4 | 633 | { |
0381101f | 634 | struct sockaddr_hci haddr; |
1da177e4 LT |
635 | struct sock *sk = sock->sk; |
636 | struct hci_dev *hdev = NULL; | |
0381101f | 637 | int len, err = 0; |
1da177e4 LT |
638 | |
639 | BT_DBG("sock %p sk %p", sock, sk); | |
640 | ||
0381101f JH |
641 | if (!addr) |
642 | return -EINVAL; | |
643 | ||
644 | memset(&haddr, 0, sizeof(haddr)); | |
645 | len = min_t(unsigned int, sizeof(haddr), addr_len); | |
646 | memcpy(&haddr, addr, len); | |
647 | ||
648 | if (haddr.hci_family != AF_BLUETOOTH) | |
649 | return -EINVAL; | |
650 | ||
1da177e4 LT |
651 | lock_sock(sk); |
652 | ||
7cc2ade2 | 653 | if (sk->sk_state == BT_BOUND) { |
1da177e4 LT |
654 | err = -EALREADY; |
655 | goto done; | |
656 | } | |
657 | ||
7cc2ade2 MH |
658 | switch (haddr.hci_channel) { |
659 | case HCI_CHANNEL_RAW: | |
660 | if (hci_pi(sk)->hdev) { | |
661 | err = -EALREADY; | |
1da177e4 LT |
662 | goto done; |
663 | } | |
664 | ||
7cc2ade2 MH |
665 | if (haddr.hci_dev != HCI_DEV_NONE) { |
666 | hdev = hci_dev_get(haddr.hci_dev); | |
667 | if (!hdev) { | |
668 | err = -ENODEV; | |
669 | goto done; | |
670 | } | |
671 | ||
672 | atomic_inc(&hdev->promisc); | |
673 | } | |
674 | ||
675 | hci_pi(sk)->hdev = hdev; | |
676 | break; | |
677 | ||
23500189 MH |
678 | case HCI_CHANNEL_USER: |
679 | if (hci_pi(sk)->hdev) { | |
680 | err = -EALREADY; | |
681 | goto done; | |
682 | } | |
683 | ||
684 | if (haddr.hci_dev == HCI_DEV_NONE) { | |
685 | err = -EINVAL; | |
686 | goto done; | |
687 | } | |
688 | ||
10a8b86f | 689 | if (!capable(CAP_NET_ADMIN)) { |
23500189 MH |
690 | err = -EPERM; |
691 | goto done; | |
692 | } | |
693 | ||
694 | hdev = hci_dev_get(haddr.hci_dev); | |
695 | if (!hdev) { | |
696 | err = -ENODEV; | |
697 | goto done; | |
698 | } | |
699 | ||
700 | if (test_bit(HCI_UP, &hdev->flags) || | |
701 | test_bit(HCI_INIT, &hdev->flags) || | |
702 | test_bit(HCI_SETUP, &hdev->dev_flags)) { | |
703 | err = -EBUSY; | |
704 | hci_dev_put(hdev); | |
705 | goto done; | |
706 | } | |
707 | ||
708 | if (test_and_set_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { | |
709 | err = -EUSERS; | |
710 | hci_dev_put(hdev); | |
711 | goto done; | |
712 | } | |
713 | ||
714 | mgmt_index_removed(hdev); | |
715 | ||
716 | err = hci_dev_open(hdev->id); | |
717 | if (err) { | |
718 | clear_bit(HCI_USER_CHANNEL, &hdev->dev_flags); | |
c6521401 | 719 | mgmt_index_added(hdev); |
23500189 MH |
720 | hci_dev_put(hdev); |
721 | goto done; | |
722 | } | |
723 | ||
724 | atomic_inc(&hdev->promisc); | |
725 | ||
726 | hci_pi(sk)->hdev = hdev; | |
727 | break; | |
728 | ||
7cc2ade2 | 729 | case HCI_CHANNEL_CONTROL: |
4b95a24c | 730 | if (haddr.hci_dev != HCI_DEV_NONE) { |
7cc2ade2 MH |
731 | err = -EINVAL; |
732 | goto done; | |
733 | } | |
734 | ||
801f13bd MH |
735 | if (!capable(CAP_NET_ADMIN)) { |
736 | err = -EPERM; | |
737 | goto done; | |
738 | } | |
739 | ||
7cc2ade2 MH |
740 | break; |
741 | ||
cd82e61c MH |
742 | case HCI_CHANNEL_MONITOR: |
743 | if (haddr.hci_dev != HCI_DEV_NONE) { | |
744 | err = -EINVAL; | |
745 | goto done; | |
746 | } | |
747 | ||
748 | if (!capable(CAP_NET_RAW)) { | |
749 | err = -EPERM; | |
750 | goto done; | |
751 | } | |
752 | ||
753 | send_monitor_replay(sk); | |
754 | ||
755 | atomic_inc(&monitor_promisc); | |
756 | break; | |
757 | ||
7cc2ade2 MH |
758 | default: |
759 | err = -EINVAL; | |
760 | goto done; | |
1da177e4 LT |
761 | } |
762 | ||
7cc2ade2 | 763 | |
0381101f | 764 | hci_pi(sk)->channel = haddr.hci_channel; |
1da177e4 LT |
765 | sk->sk_state = BT_BOUND; |
766 | ||
767 | done: | |
768 | release_sock(sk); | |
769 | return err; | |
770 | } | |
771 | ||
8fc9ced3 GP |
772 | static int hci_sock_getname(struct socket *sock, struct sockaddr *addr, |
773 | int *addr_len, int peer) | |
1da177e4 LT |
774 | { |
775 | struct sockaddr_hci *haddr = (struct sockaddr_hci *) addr; | |
776 | struct sock *sk = sock->sk; | |
9d4b68b2 MH |
777 | struct hci_dev *hdev; |
778 | int err = 0; | |
1da177e4 LT |
779 | |
780 | BT_DBG("sock %p sk %p", sock, sk); | |
781 | ||
06f43cbc MH |
782 | if (peer) |
783 | return -EOPNOTSUPP; | |
784 | ||
1da177e4 LT |
785 | lock_sock(sk); |
786 | ||
9d4b68b2 MH |
787 | hdev = hci_pi(sk)->hdev; |
788 | if (!hdev) { | |
789 | err = -EBADFD; | |
790 | goto done; | |
791 | } | |
792 | ||
1da177e4 LT |
793 | *addr_len = sizeof(*haddr); |
794 | haddr->hci_family = AF_BLUETOOTH; | |
7b005bd3 | 795 | haddr->hci_dev = hdev->id; |
9d4b68b2 | 796 | haddr->hci_channel= hci_pi(sk)->channel; |
1da177e4 | 797 | |
9d4b68b2 | 798 | done: |
1da177e4 | 799 | release_sock(sk); |
9d4b68b2 | 800 | return err; |
1da177e4 LT |
801 | } |
802 | ||
6039aa73 GP |
803 | static void hci_sock_cmsg(struct sock *sk, struct msghdr *msg, |
804 | struct sk_buff *skb) | |
1da177e4 LT |
805 | { |
806 | __u32 mask = hci_pi(sk)->cmsg_mask; | |
807 | ||
0d48d939 MH |
808 | if (mask & HCI_CMSG_DIR) { |
809 | int incoming = bt_cb(skb)->incoming; | |
8fc9ced3 GP |
810 | put_cmsg(msg, SOL_HCI, HCI_CMSG_DIR, sizeof(incoming), |
811 | &incoming); | |
0d48d939 | 812 | } |
1da177e4 | 813 | |
a61bbcf2 | 814 | if (mask & HCI_CMSG_TSTAMP) { |
f6e623a6 JFS |
815 | #ifdef CONFIG_COMPAT |
816 | struct compat_timeval ctv; | |
817 | #endif | |
a61bbcf2 | 818 | struct timeval tv; |
767c5eb5 MH |
819 | void *data; |
820 | int len; | |
a61bbcf2 PM |
821 | |
822 | skb_get_timestamp(skb, &tv); | |
767c5eb5 | 823 | |
1da97f83 DM |
824 | data = &tv; |
825 | len = sizeof(tv); | |
826 | #ifdef CONFIG_COMPAT | |
da88cea1 L |
827 | if (!COMPAT_USE_64BIT_TIME && |
828 | (msg->msg_flags & MSG_CMSG_COMPAT)) { | |
767c5eb5 MH |
829 | ctv.tv_sec = tv.tv_sec; |
830 | ctv.tv_usec = tv.tv_usec; | |
831 | data = &ctv; | |
832 | len = sizeof(ctv); | |
767c5eb5 | 833 | } |
1da97f83 | 834 | #endif |
767c5eb5 MH |
835 | |
836 | put_cmsg(msg, SOL_HCI, HCI_CMSG_TSTAMP, len, data); | |
a61bbcf2 | 837 | } |
1da177e4 | 838 | } |
8e87d142 YH |
839 | |
840 | static int hci_sock_recvmsg(struct kiocb *iocb, struct socket *sock, | |
3bb3c755 | 841 | struct msghdr *msg, size_t len, int flags) |
1da177e4 LT |
842 | { |
843 | int noblock = flags & MSG_DONTWAIT; | |
844 | struct sock *sk = sock->sk; | |
845 | struct sk_buff *skb; | |
846 | int copied, err; | |
847 | ||
848 | BT_DBG("sock %p, sk %p", sock, sk); | |
849 | ||
850 | if (flags & (MSG_OOB)) | |
851 | return -EOPNOTSUPP; | |
852 | ||
853 | if (sk->sk_state == BT_CLOSED) | |
854 | return 0; | |
855 | ||
70f23020 AE |
856 | skb = skb_recv_datagram(sk, flags, noblock, &err); |
857 | if (!skb) | |
1da177e4 LT |
858 | return err; |
859 | ||
1da177e4 LT |
860 | copied = skb->len; |
861 | if (len < copied) { | |
862 | msg->msg_flags |= MSG_TRUNC; | |
863 | copied = len; | |
864 | } | |
865 | ||
badff6d0 | 866 | skb_reset_transport_header(skb); |
1da177e4 LT |
867 | err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied); |
868 | ||
3a208627 MH |
869 | switch (hci_pi(sk)->channel) { |
870 | case HCI_CHANNEL_RAW: | |
871 | hci_sock_cmsg(sk, msg, skb); | |
872 | break; | |
23500189 | 873 | case HCI_CHANNEL_USER: |
97e0bdeb | 874 | case HCI_CHANNEL_CONTROL: |
cd82e61c MH |
875 | case HCI_CHANNEL_MONITOR: |
876 | sock_recv_timestamp(msg, sk, skb); | |
877 | break; | |
3a208627 | 878 | } |
1da177e4 LT |
879 | |
880 | skb_free_datagram(sk, skb); | |
881 | ||
882 | return err ? : copied; | |
883 | } | |
884 | ||
8e87d142 | 885 | static int hci_sock_sendmsg(struct kiocb *iocb, struct socket *sock, |
1da177e4 LT |
886 | struct msghdr *msg, size_t len) |
887 | { | |
888 | struct sock *sk = sock->sk; | |
889 | struct hci_dev *hdev; | |
890 | struct sk_buff *skb; | |
891 | int err; | |
892 | ||
893 | BT_DBG("sock %p sk %p", sock, sk); | |
894 | ||
895 | if (msg->msg_flags & MSG_OOB) | |
896 | return -EOPNOTSUPP; | |
897 | ||
898 | if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_NOSIGNAL|MSG_ERRQUEUE)) | |
899 | return -EINVAL; | |
900 | ||
901 | if (len < 4 || len > HCI_MAX_FRAME_SIZE) | |
902 | return -EINVAL; | |
903 | ||
904 | lock_sock(sk); | |
905 | ||
0381101f JH |
906 | switch (hci_pi(sk)->channel) { |
907 | case HCI_CHANNEL_RAW: | |
23500189 | 908 | case HCI_CHANNEL_USER: |
0381101f JH |
909 | break; |
910 | case HCI_CHANNEL_CONTROL: | |
911 | err = mgmt_control(sk, msg, len); | |
912 | goto done; | |
cd82e61c MH |
913 | case HCI_CHANNEL_MONITOR: |
914 | err = -EOPNOTSUPP; | |
915 | goto done; | |
0381101f JH |
916 | default: |
917 | err = -EINVAL; | |
918 | goto done; | |
919 | } | |
920 | ||
70f23020 AE |
921 | hdev = hci_pi(sk)->hdev; |
922 | if (!hdev) { | |
1da177e4 LT |
923 | err = -EBADFD; |
924 | goto done; | |
925 | } | |
926 | ||
7e21addc MH |
927 | if (!test_bit(HCI_UP, &hdev->flags)) { |
928 | err = -ENETDOWN; | |
929 | goto done; | |
930 | } | |
931 | ||
70f23020 AE |
932 | skb = bt_skb_send_alloc(sk, len, msg->msg_flags & MSG_DONTWAIT, &err); |
933 | if (!skb) | |
1da177e4 LT |
934 | goto done; |
935 | ||
936 | if (memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len)) { | |
937 | err = -EFAULT; | |
938 | goto drop; | |
939 | } | |
940 | ||
0d48d939 | 941 | bt_cb(skb)->pkt_type = *((unsigned char *) skb->data); |
1da177e4 | 942 | skb_pull(skb, 1); |
1da177e4 | 943 | |
1bc5ad16 MH |
944 | if (hci_pi(sk)->channel == HCI_CHANNEL_USER) { |
945 | /* No permission check is needed for user channel | |
946 | * since that gets enforced when binding the socket. | |
947 | * | |
948 | * However check that the packet type is valid. | |
949 | */ | |
950 | if (bt_cb(skb)->pkt_type != HCI_COMMAND_PKT && | |
951 | bt_cb(skb)->pkt_type != HCI_ACLDATA_PKT && | |
952 | bt_cb(skb)->pkt_type != HCI_SCODATA_PKT) { | |
953 | err = -EINVAL; | |
954 | goto drop; | |
955 | } | |
956 | ||
957 | skb_queue_tail(&hdev->raw_q, skb); | |
958 | queue_work(hdev->workqueue, &hdev->tx_work); | |
959 | } else if (bt_cb(skb)->pkt_type == HCI_COMMAND_PKT) { | |
83985319 | 960 | u16 opcode = get_unaligned_le16(skb->data); |
1da177e4 LT |
961 | u16 ogf = hci_opcode_ogf(opcode); |
962 | u16 ocf = hci_opcode_ocf(opcode); | |
963 | ||
964 | if (((ogf > HCI_SFLT_MAX_OGF) || | |
3bb3c755 GP |
965 | !hci_test_bit(ocf & HCI_FLT_OCF_BITS, |
966 | &hci_sec_filter.ocf_mask[ogf])) && | |
967 | !capable(CAP_NET_RAW)) { | |
1da177e4 LT |
968 | err = -EPERM; |
969 | goto drop; | |
970 | } | |
971 | ||
a9de9248 | 972 | if (test_bit(HCI_RAW, &hdev->flags) || (ogf == 0x3f)) { |
1da177e4 | 973 | skb_queue_tail(&hdev->raw_q, skb); |
3eff45ea | 974 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 975 | } else { |
11714b3d JH |
976 | /* Stand-alone HCI commands must be flaged as |
977 | * single-command requests. | |
978 | */ | |
979 | bt_cb(skb)->req.start = true; | |
980 | ||
1da177e4 | 981 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 982 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
983 | } |
984 | } else { | |
985 | if (!capable(CAP_NET_RAW)) { | |
986 | err = -EPERM; | |
987 | goto drop; | |
988 | } | |
989 | ||
990 | skb_queue_tail(&hdev->raw_q, skb); | |
3eff45ea | 991 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 LT |
992 | } |
993 | ||
994 | err = len; | |
995 | ||
996 | done: | |
997 | release_sock(sk); | |
998 | return err; | |
999 | ||
1000 | drop: | |
1001 | kfree_skb(skb); | |
1002 | goto done; | |
1003 | } | |
1004 | ||
8fc9ced3 GP |
1005 | static int hci_sock_setsockopt(struct socket *sock, int level, int optname, |
1006 | char __user *optval, unsigned int len) | |
1da177e4 LT |
1007 | { |
1008 | struct hci_ufilter uf = { .opcode = 0 }; | |
1009 | struct sock *sk = sock->sk; | |
1010 | int err = 0, opt = 0; | |
1011 | ||
1012 | BT_DBG("sk %p, opt %d", sk, optname); | |
1013 | ||
1014 | lock_sock(sk); | |
1015 | ||
2f39cdb7 | 1016 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) { |
c2371e80 | 1017 | err = -EBADFD; |
2f39cdb7 MH |
1018 | goto done; |
1019 | } | |
1020 | ||
1da177e4 LT |
1021 | switch (optname) { |
1022 | case HCI_DATA_DIR: | |
1023 | if (get_user(opt, (int __user *)optval)) { | |
1024 | err = -EFAULT; | |
1025 | break; | |
1026 | } | |
1027 | ||
1028 | if (opt) | |
1029 | hci_pi(sk)->cmsg_mask |= HCI_CMSG_DIR; | |
1030 | else | |
1031 | hci_pi(sk)->cmsg_mask &= ~HCI_CMSG_DIR; | |
1032 | break; | |
1033 | ||
1034 | case HCI_TIME_STAMP: | |
1035 | if (get_user(opt, (int __user *)optval)) { | |
1036 | err = -EFAULT; | |
1037 | break; | |
1038 | } | |
1039 | ||
1040 | if (opt) | |
1041 | hci_pi(sk)->cmsg_mask |= HCI_CMSG_TSTAMP; | |
1042 | else | |
1043 | hci_pi(sk)->cmsg_mask &= ~HCI_CMSG_TSTAMP; | |
1044 | break; | |
1045 | ||
1046 | case HCI_FILTER: | |
0878b666 MH |
1047 | { |
1048 | struct hci_filter *f = &hci_pi(sk)->filter; | |
1049 | ||
1050 | uf.type_mask = f->type_mask; | |
1051 | uf.opcode = f->opcode; | |
1052 | uf.event_mask[0] = *((u32 *) f->event_mask + 0); | |
1053 | uf.event_mask[1] = *((u32 *) f->event_mask + 1); | |
1054 | } | |
1055 | ||
1da177e4 LT |
1056 | len = min_t(unsigned int, len, sizeof(uf)); |
1057 | if (copy_from_user(&uf, optval, len)) { | |
1058 | err = -EFAULT; | |
1059 | break; | |
1060 | } | |
1061 | ||
1062 | if (!capable(CAP_NET_RAW)) { | |
1063 | uf.type_mask &= hci_sec_filter.type_mask; | |
1064 | uf.event_mask[0] &= *((u32 *) hci_sec_filter.event_mask + 0); | |
1065 | uf.event_mask[1] &= *((u32 *) hci_sec_filter.event_mask + 1); | |
1066 | } | |
1067 | ||
1068 | { | |
1069 | struct hci_filter *f = &hci_pi(sk)->filter; | |
1070 | ||
1071 | f->type_mask = uf.type_mask; | |
1072 | f->opcode = uf.opcode; | |
1073 | *((u32 *) f->event_mask + 0) = uf.event_mask[0]; | |
1074 | *((u32 *) f->event_mask + 1) = uf.event_mask[1]; | |
1075 | } | |
8e87d142 | 1076 | break; |
1da177e4 LT |
1077 | |
1078 | default: | |
1079 | err = -ENOPROTOOPT; | |
1080 | break; | |
1081 | } | |
1082 | ||
2f39cdb7 | 1083 | done: |
1da177e4 LT |
1084 | release_sock(sk); |
1085 | return err; | |
1086 | } | |
1087 | ||
8fc9ced3 GP |
1088 | static int hci_sock_getsockopt(struct socket *sock, int level, int optname, |
1089 | char __user *optval, int __user *optlen) | |
1da177e4 LT |
1090 | { |
1091 | struct hci_ufilter uf; | |
1092 | struct sock *sk = sock->sk; | |
cedc5469 MH |
1093 | int len, opt, err = 0; |
1094 | ||
1095 | BT_DBG("sk %p, opt %d", sk, optname); | |
1da177e4 LT |
1096 | |
1097 | if (get_user(len, optlen)) | |
1098 | return -EFAULT; | |
1099 | ||
cedc5469 MH |
1100 | lock_sock(sk); |
1101 | ||
1102 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) { | |
c2371e80 | 1103 | err = -EBADFD; |
cedc5469 MH |
1104 | goto done; |
1105 | } | |
1106 | ||
1da177e4 LT |
1107 | switch (optname) { |
1108 | case HCI_DATA_DIR: | |
1109 | if (hci_pi(sk)->cmsg_mask & HCI_CMSG_DIR) | |
1110 | opt = 1; | |
8e87d142 | 1111 | else |
1da177e4 LT |
1112 | opt = 0; |
1113 | ||
1114 | if (put_user(opt, optval)) | |
cedc5469 | 1115 | err = -EFAULT; |
1da177e4 LT |
1116 | break; |
1117 | ||
1118 | case HCI_TIME_STAMP: | |
1119 | if (hci_pi(sk)->cmsg_mask & HCI_CMSG_TSTAMP) | |
1120 | opt = 1; | |
8e87d142 | 1121 | else |
1da177e4 LT |
1122 | opt = 0; |
1123 | ||
1124 | if (put_user(opt, optval)) | |
cedc5469 | 1125 | err = -EFAULT; |
1da177e4 LT |
1126 | break; |
1127 | ||
1128 | case HCI_FILTER: | |
1129 | { | |
1130 | struct hci_filter *f = &hci_pi(sk)->filter; | |
1131 | ||
e15ca9a0 | 1132 | memset(&uf, 0, sizeof(uf)); |
1da177e4 LT |
1133 | uf.type_mask = f->type_mask; |
1134 | uf.opcode = f->opcode; | |
1135 | uf.event_mask[0] = *((u32 *) f->event_mask + 0); | |
1136 | uf.event_mask[1] = *((u32 *) f->event_mask + 1); | |
1137 | } | |
1138 | ||
1139 | len = min_t(unsigned int, len, sizeof(uf)); | |
1140 | if (copy_to_user(optval, &uf, len)) | |
cedc5469 | 1141 | err = -EFAULT; |
1da177e4 LT |
1142 | break; |
1143 | ||
1144 | default: | |
cedc5469 | 1145 | err = -ENOPROTOOPT; |
1da177e4 LT |
1146 | break; |
1147 | } | |
1148 | ||
cedc5469 MH |
1149 | done: |
1150 | release_sock(sk); | |
1151 | return err; | |
1da177e4 LT |
1152 | } |
1153 | ||
90ddc4f0 | 1154 | static const struct proto_ops hci_sock_ops = { |
1da177e4 LT |
1155 | .family = PF_BLUETOOTH, |
1156 | .owner = THIS_MODULE, | |
1157 | .release = hci_sock_release, | |
1158 | .bind = hci_sock_bind, | |
1159 | .getname = hci_sock_getname, | |
1160 | .sendmsg = hci_sock_sendmsg, | |
1161 | .recvmsg = hci_sock_recvmsg, | |
1162 | .ioctl = hci_sock_ioctl, | |
1163 | .poll = datagram_poll, | |
1164 | .listen = sock_no_listen, | |
1165 | .shutdown = sock_no_shutdown, | |
1166 | .setsockopt = hci_sock_setsockopt, | |
1167 | .getsockopt = hci_sock_getsockopt, | |
1168 | .connect = sock_no_connect, | |
1169 | .socketpair = sock_no_socketpair, | |
1170 | .accept = sock_no_accept, | |
1171 | .mmap = sock_no_mmap | |
1172 | }; | |
1173 | ||
1174 | static struct proto hci_sk_proto = { | |
1175 | .name = "HCI", | |
1176 | .owner = THIS_MODULE, | |
1177 | .obj_size = sizeof(struct hci_pinfo) | |
1178 | }; | |
1179 | ||
3f378b68 EP |
1180 | static int hci_sock_create(struct net *net, struct socket *sock, int protocol, |
1181 | int kern) | |
1da177e4 LT |
1182 | { |
1183 | struct sock *sk; | |
1184 | ||
1185 | BT_DBG("sock %p", sock); | |
1186 | ||
1187 | if (sock->type != SOCK_RAW) | |
1188 | return -ESOCKTNOSUPPORT; | |
1189 | ||
1190 | sock->ops = &hci_sock_ops; | |
1191 | ||
6257ff21 | 1192 | sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &hci_sk_proto); |
1da177e4 LT |
1193 | if (!sk) |
1194 | return -ENOMEM; | |
1195 | ||
1196 | sock_init_data(sock, sk); | |
1197 | ||
1198 | sock_reset_flag(sk, SOCK_ZAPPED); | |
1199 | ||
1200 | sk->sk_protocol = protocol; | |
1201 | ||
1202 | sock->state = SS_UNCONNECTED; | |
1203 | sk->sk_state = BT_OPEN; | |
1204 | ||
1205 | bt_sock_link(&hci_sk_list, sk); | |
1206 | return 0; | |
1207 | } | |
1208 | ||
ec1b4cf7 | 1209 | static const struct net_proto_family hci_sock_family_ops = { |
1da177e4 LT |
1210 | .family = PF_BLUETOOTH, |
1211 | .owner = THIS_MODULE, | |
1212 | .create = hci_sock_create, | |
1213 | }; | |
1214 | ||
1da177e4 LT |
1215 | int __init hci_sock_init(void) |
1216 | { | |
1217 | int err; | |
1218 | ||
1219 | err = proto_register(&hci_sk_proto, 0); | |
1220 | if (err < 0) | |
1221 | return err; | |
1222 | ||
1223 | err = bt_sock_register(BTPROTO_HCI, &hci_sock_family_ops); | |
f7c86637 MY |
1224 | if (err < 0) { |
1225 | BT_ERR("HCI socket registration failed"); | |
1da177e4 | 1226 | goto error; |
f7c86637 MY |
1227 | } |
1228 | ||
b0316615 | 1229 | err = bt_procfs_init(&init_net, "hci", &hci_sk_list, NULL); |
f7c86637 MY |
1230 | if (err < 0) { |
1231 | BT_ERR("Failed to create HCI proc file"); | |
1232 | bt_sock_unregister(BTPROTO_HCI); | |
1233 | goto error; | |
1234 | } | |
1da177e4 | 1235 | |
1da177e4 LT |
1236 | BT_INFO("HCI socket layer initialized"); |
1237 | ||
1238 | return 0; | |
1239 | ||
1240 | error: | |
1da177e4 LT |
1241 | proto_unregister(&hci_sk_proto); |
1242 | return err; | |
1243 | } | |
1244 | ||
b7440a14 | 1245 | void hci_sock_cleanup(void) |
1da177e4 | 1246 | { |
f7c86637 | 1247 | bt_procfs_cleanup(&init_net, "hci"); |
5e9d7f86 | 1248 | bt_sock_unregister(BTPROTO_HCI); |
1da177e4 | 1249 | proto_unregister(&hci_sk_proto); |
1da177e4 | 1250 | } |