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 | ||
863def58 MH |
38 | /* Socket info */ |
39 | #define hci_pi(sk) ((struct hci_pinfo *) sk) | |
40 | ||
41 | struct hci_pinfo { | |
42 | struct bt_sock bt; | |
43 | struct hci_dev *hdev; | |
44 | struct hci_filter filter; | |
45 | __u32 cmsg_mask; | |
46 | unsigned short channel; | |
47 | }; | |
48 | ||
1da177e4 LT |
49 | static inline int hci_test_bit(int nr, void *addr) |
50 | { | |
51 | return *((__u32 *) addr + (nr >> 5)) & ((__u32) 1 << (nr & 31)); | |
52 | } | |
53 | ||
54 | /* Security filter */ | |
3ad254f7 MH |
55 | #define HCI_SFLT_MAX_OGF 5 |
56 | ||
57 | struct hci_sec_filter { | |
58 | __u32 type_mask; | |
59 | __u32 event_mask[2]; | |
60 | __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4]; | |
61 | }; | |
62 | ||
7e67c112 | 63 | static const struct hci_sec_filter hci_sec_filter = { |
1da177e4 LT |
64 | /* Packet types */ |
65 | 0x10, | |
66 | /* Events */ | |
dd7f5527 | 67 | { 0x1000d9fe, 0x0000b00c }, |
1da177e4 LT |
68 | /* Commands */ |
69 | { | |
70 | { 0x0 }, | |
71 | /* OGF_LINK_CTL */ | |
7c631a67 | 72 | { 0xbe000006, 0x00000001, 0x00000000, 0x00 }, |
1da177e4 | 73 | /* OGF_LINK_POLICY */ |
7c631a67 | 74 | { 0x00005200, 0x00000000, 0x00000000, 0x00 }, |
1da177e4 | 75 | /* OGF_HOST_CTL */ |
7c631a67 | 76 | { 0xaab00200, 0x2b402aaa, 0x05220154, 0x00 }, |
1da177e4 | 77 | /* OGF_INFO_PARAM */ |
7c631a67 | 78 | { 0x000002be, 0x00000000, 0x00000000, 0x00 }, |
1da177e4 | 79 | /* OGF_STATUS_PARAM */ |
7c631a67 | 80 | { 0x000000ea, 0x00000000, 0x00000000, 0x00 } |
1da177e4 LT |
81 | } |
82 | }; | |
83 | ||
84 | static struct bt_sock_list hci_sk_list = { | |
d5fb2962 | 85 | .lock = __RW_LOCK_UNLOCKED(hci_sk_list.lock) |
1da177e4 LT |
86 | }; |
87 | ||
f81fe64f MH |
88 | static bool is_filtered_packet(struct sock *sk, struct sk_buff *skb) |
89 | { | |
90 | struct hci_filter *flt; | |
91 | int flt_type, flt_event; | |
92 | ||
93 | /* Apply filter */ | |
94 | flt = &hci_pi(sk)->filter; | |
95 | ||
96 | if (bt_cb(skb)->pkt_type == HCI_VENDOR_PKT) | |
97 | flt_type = 0; | |
98 | else | |
99 | flt_type = bt_cb(skb)->pkt_type & HCI_FLT_TYPE_BITS; | |
100 | ||
101 | if (!test_bit(flt_type, &flt->type_mask)) | |
102 | return true; | |
103 | ||
104 | /* Extra filter for event packets only */ | |
105 | if (bt_cb(skb)->pkt_type != HCI_EVENT_PKT) | |
106 | return false; | |
107 | ||
108 | flt_event = (*(__u8 *)skb->data & HCI_FLT_EVENT_BITS); | |
109 | ||
110 | if (!hci_test_bit(flt_event, &flt->event_mask)) | |
111 | return true; | |
112 | ||
113 | /* Check filter only when opcode is set */ | |
114 | if (!flt->opcode) | |
115 | return false; | |
116 | ||
117 | if (flt_event == HCI_EV_CMD_COMPLETE && | |
118 | flt->opcode != get_unaligned((__le16 *)(skb->data + 3))) | |
119 | return true; | |
120 | ||
121 | if (flt_event == HCI_EV_CMD_STATUS && | |
122 | flt->opcode != get_unaligned((__le16 *)(skb->data + 4))) | |
123 | return true; | |
124 | ||
125 | return false; | |
126 | } | |
127 | ||
1da177e4 | 128 | /* Send frame to RAW socket */ |
470fe1b5 | 129 | void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
130 | { |
131 | struct sock *sk; | |
e0edf373 | 132 | struct sk_buff *skb_copy = NULL; |
1da177e4 LT |
133 | |
134 | BT_DBG("hdev %p len %d", hdev, skb->len); | |
135 | ||
136 | read_lock(&hci_sk_list.lock); | |
470fe1b5 | 137 | |
b67bfe0d | 138 | sk_for_each(sk, &hci_sk_list.head) { |
1da177e4 LT |
139 | struct sk_buff *nskb; |
140 | ||
141 | if (sk->sk_state != BT_BOUND || hci_pi(sk)->hdev != hdev) | |
142 | continue; | |
143 | ||
144 | /* Don't send frame to the socket it came from */ | |
145 | if (skb->sk == sk) | |
146 | continue; | |
147 | ||
23500189 MH |
148 | if (hci_pi(sk)->channel == HCI_CHANNEL_RAW) { |
149 | if (is_filtered_packet(sk, skb)) | |
150 | continue; | |
151 | } else if (hci_pi(sk)->channel == HCI_CHANNEL_USER) { | |
152 | if (!bt_cb(skb)->incoming) | |
153 | continue; | |
154 | if (bt_cb(skb)->pkt_type != HCI_EVENT_PKT && | |
155 | bt_cb(skb)->pkt_type != HCI_ACLDATA_PKT && | |
156 | bt_cb(skb)->pkt_type != HCI_SCODATA_PKT) | |
157 | continue; | |
158 | } else { | |
159 | /* Don't send frame to other channel types */ | |
1da177e4 | 160 | continue; |
23500189 | 161 | } |
1da177e4 | 162 | |
e0edf373 MH |
163 | if (!skb_copy) { |
164 | /* Create a private copy with headroom */ | |
bad93e9d | 165 | skb_copy = __pskb_copy_fclone(skb, 1, GFP_ATOMIC, true); |
e0edf373 MH |
166 | if (!skb_copy) |
167 | continue; | |
168 | ||
169 | /* Put type byte before the data */ | |
170 | memcpy(skb_push(skb_copy, 1), &bt_cb(skb)->pkt_type, 1); | |
171 | } | |
172 | ||
173 | nskb = skb_clone(skb_copy, GFP_ATOMIC); | |
70f23020 | 174 | if (!nskb) |
1da177e4 LT |
175 | continue; |
176 | ||
470fe1b5 MH |
177 | if (sock_queue_rcv_skb(sk, nskb)) |
178 | kfree_skb(nskb); | |
179 | } | |
180 | ||
181 | read_unlock(&hci_sk_list.lock); | |
e0edf373 MH |
182 | |
183 | kfree_skb(skb_copy); | |
470fe1b5 MH |
184 | } |
185 | ||
186 | /* Send frame to control socket */ | |
187 | void hci_send_to_control(struct sk_buff *skb, struct sock *skip_sk) | |
188 | { | |
189 | struct sock *sk; | |
470fe1b5 MH |
190 | |
191 | BT_DBG("len %d", skb->len); | |
192 | ||
193 | read_lock(&hci_sk_list.lock); | |
194 | ||
b67bfe0d | 195 | sk_for_each(sk, &hci_sk_list.head) { |
470fe1b5 MH |
196 | struct sk_buff *nskb; |
197 | ||
198 | /* Skip the original socket */ | |
199 | if (sk == skip_sk) | |
200 | continue; | |
201 | ||
202 | if (sk->sk_state != BT_BOUND) | |
203 | continue; | |
204 | ||
205 | if (hci_pi(sk)->channel != HCI_CHANNEL_CONTROL) | |
206 | continue; | |
207 | ||
208 | nskb = skb_clone(skb, GFP_ATOMIC); | |
209 | if (!nskb) | |
210 | continue; | |
1da177e4 LT |
211 | |
212 | if (sock_queue_rcv_skb(sk, nskb)) | |
213 | kfree_skb(nskb); | |
214 | } | |
470fe1b5 | 215 | |
1da177e4 LT |
216 | read_unlock(&hci_sk_list.lock); |
217 | } | |
218 | ||
d7f72f61 MH |
219 | static void queue_monitor_skb(struct sk_buff *skb) |
220 | { | |
221 | struct sock *sk; | |
222 | ||
223 | BT_DBG("len %d", skb->len); | |
224 | ||
225 | read_lock(&hci_sk_list.lock); | |
226 | ||
227 | sk_for_each(sk, &hci_sk_list.head) { | |
228 | struct sk_buff *nskb; | |
229 | ||
230 | if (sk->sk_state != BT_BOUND) | |
231 | continue; | |
232 | ||
233 | if (hci_pi(sk)->channel != HCI_CHANNEL_MONITOR) | |
234 | continue; | |
235 | ||
236 | nskb = skb_clone(skb, GFP_ATOMIC); | |
237 | if (!nskb) | |
238 | continue; | |
239 | ||
240 | if (sock_queue_rcv_skb(sk, nskb)) | |
241 | kfree_skb(nskb); | |
242 | } | |
243 | ||
244 | read_unlock(&hci_sk_list.lock); | |
245 | } | |
246 | ||
cd82e61c MH |
247 | /* Send frame to monitor socket */ |
248 | void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb) | |
249 | { | |
cd82e61c | 250 | struct sk_buff *skb_copy = NULL; |
2b531294 | 251 | struct hci_mon_hdr *hdr; |
cd82e61c MH |
252 | __le16 opcode; |
253 | ||
254 | if (!atomic_read(&monitor_promisc)) | |
255 | return; | |
256 | ||
257 | BT_DBG("hdev %p len %d", hdev, skb->len); | |
258 | ||
259 | switch (bt_cb(skb)->pkt_type) { | |
260 | case HCI_COMMAND_PKT: | |
dcf4adbf | 261 | opcode = cpu_to_le16(HCI_MON_COMMAND_PKT); |
cd82e61c MH |
262 | break; |
263 | case HCI_EVENT_PKT: | |
dcf4adbf | 264 | opcode = cpu_to_le16(HCI_MON_EVENT_PKT); |
cd82e61c MH |
265 | break; |
266 | case HCI_ACLDATA_PKT: | |
267 | if (bt_cb(skb)->incoming) | |
dcf4adbf | 268 | opcode = cpu_to_le16(HCI_MON_ACL_RX_PKT); |
cd82e61c | 269 | else |
dcf4adbf | 270 | opcode = cpu_to_le16(HCI_MON_ACL_TX_PKT); |
cd82e61c MH |
271 | break; |
272 | case HCI_SCODATA_PKT: | |
273 | if (bt_cb(skb)->incoming) | |
dcf4adbf | 274 | opcode = cpu_to_le16(HCI_MON_SCO_RX_PKT); |
cd82e61c | 275 | else |
dcf4adbf | 276 | opcode = cpu_to_le16(HCI_MON_SCO_TX_PKT); |
cd82e61c MH |
277 | break; |
278 | default: | |
279 | return; | |
280 | } | |
281 | ||
2b531294 MH |
282 | /* Create a private copy with headroom */ |
283 | skb_copy = __pskb_copy_fclone(skb, HCI_MON_HDR_SIZE, GFP_ATOMIC, true); | |
284 | if (!skb_copy) | |
285 | return; | |
286 | ||
287 | /* Put header before the data */ | |
288 | hdr = (void *) skb_push(skb_copy, HCI_MON_HDR_SIZE); | |
289 | hdr->opcode = opcode; | |
290 | hdr->index = cpu_to_le16(hdev->id); | |
291 | hdr->len = cpu_to_le16(skb->len); | |
292 | ||
d7f72f61 | 293 | queue_monitor_skb(skb_copy); |
cd82e61c MH |
294 | kfree_skb(skb_copy); |
295 | } | |
296 | ||
cd82e61c MH |
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 | ||
dcf4adbf | 316 | opcode = cpu_to_le16(HCI_MON_NEW_INDEX); |
cd82e61c MH |
317 | break; |
318 | ||
319 | case HCI_DEV_UNREG: | |
320 | skb = bt_skb_alloc(0, GFP_ATOMIC); | |
321 | if (!skb) | |
322 | return NULL; | |
323 | ||
dcf4adbf | 324 | opcode = cpu_to_le16(HCI_MON_DEL_INDEX); |
cd82e61c MH |
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; | |
040030ef MH |
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) { | |
41e91e71 | 400 | queue_monitor_skb(skb); |
cd82e61c MH |
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; | |
040030ef MH |
412 | |
413 | /* Detach sockets from device */ | |
414 | read_lock(&hci_sk_list.lock); | |
b67bfe0d | 415 | sk_for_each(sk, &hci_sk_list.head) { |
040030ef MH |
416 | bh_lock_sock_nested(sk); |
417 | if (hci_pi(sk)->hdev == hdev) { | |
418 | hci_pi(sk)->hdev = NULL; | |
419 | sk->sk_err = EPIPE; | |
420 | sk->sk_state = BT_OPEN; | |
421 | sk->sk_state_change(sk); | |
422 | ||
423 | hci_dev_put(hdev); | |
424 | } | |
425 | bh_unlock_sock(sk); | |
426 | } | |
427 | read_unlock(&hci_sk_list.lock); | |
428 | } | |
429 | } | |
430 | ||
1da177e4 LT |
431 | static int hci_sock_release(struct socket *sock) |
432 | { | |
433 | struct sock *sk = sock->sk; | |
7b005bd3 | 434 | struct hci_dev *hdev; |
1da177e4 LT |
435 | |
436 | BT_DBG("sock %p sk %p", sock, sk); | |
437 | ||
438 | if (!sk) | |
439 | return 0; | |
440 | ||
7b005bd3 MH |
441 | hdev = hci_pi(sk)->hdev; |
442 | ||
cd82e61c MH |
443 | if (hci_pi(sk)->channel == HCI_CHANNEL_MONITOR) |
444 | atomic_dec(&monitor_promisc); | |
445 | ||
1da177e4 LT |
446 | bt_sock_unlink(&hci_sk_list, sk); |
447 | ||
448 | if (hdev) { | |
23500189 | 449 | if (hci_pi(sk)->channel == HCI_CHANNEL_USER) { |
0602a8ad | 450 | mgmt_index_added(hdev); |
23500189 MH |
451 | clear_bit(HCI_USER_CHANNEL, &hdev->dev_flags); |
452 | hci_dev_close(hdev->id); | |
453 | } | |
454 | ||
1da177e4 LT |
455 | atomic_dec(&hdev->promisc); |
456 | hci_dev_put(hdev); | |
457 | } | |
458 | ||
459 | sock_orphan(sk); | |
460 | ||
461 | skb_queue_purge(&sk->sk_receive_queue); | |
462 | skb_queue_purge(&sk->sk_write_queue); | |
463 | ||
464 | sock_put(sk); | |
465 | return 0; | |
466 | } | |
467 | ||
b2a66aad | 468 | static int hci_sock_blacklist_add(struct hci_dev *hdev, void __user *arg) |
f0358568 JH |
469 | { |
470 | bdaddr_t bdaddr; | |
5e762444 | 471 | int err; |
f0358568 JH |
472 | |
473 | if (copy_from_user(&bdaddr, arg, sizeof(bdaddr))) | |
474 | return -EFAULT; | |
475 | ||
09fd0de5 | 476 | hci_dev_lock(hdev); |
5e762444 | 477 | |
dcc36c16 | 478 | err = hci_bdaddr_list_add(&hdev->blacklist, &bdaddr, BDADDR_BREDR); |
5e762444 | 479 | |
09fd0de5 | 480 | hci_dev_unlock(hdev); |
5e762444 AJ |
481 | |
482 | return err; | |
f0358568 JH |
483 | } |
484 | ||
b2a66aad | 485 | static int hci_sock_blacklist_del(struct hci_dev *hdev, void __user *arg) |
f0358568 JH |
486 | { |
487 | bdaddr_t bdaddr; | |
5e762444 | 488 | int err; |
f0358568 JH |
489 | |
490 | if (copy_from_user(&bdaddr, arg, sizeof(bdaddr))) | |
491 | return -EFAULT; | |
492 | ||
09fd0de5 | 493 | hci_dev_lock(hdev); |
5e762444 | 494 | |
dcc36c16 | 495 | err = hci_bdaddr_list_del(&hdev->blacklist, &bdaddr, BDADDR_BREDR); |
5e762444 | 496 | |
09fd0de5 | 497 | hci_dev_unlock(hdev); |
5e762444 AJ |
498 | |
499 | return err; | |
f0358568 JH |
500 | } |
501 | ||
8e87d142 | 502 | /* Ioctls that require bound socket */ |
6039aa73 GP |
503 | static int hci_sock_bound_ioctl(struct sock *sk, unsigned int cmd, |
504 | unsigned long arg) | |
1da177e4 LT |
505 | { |
506 | struct hci_dev *hdev = hci_pi(sk)->hdev; | |
507 | ||
508 | if (!hdev) | |
509 | return -EBADFD; | |
510 | ||
0736cfa8 MH |
511 | if (test_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) |
512 | return -EBUSY; | |
513 | ||
4a964404 | 514 | if (test_bit(HCI_UNCONFIGURED, &hdev->dev_flags)) |
fee746b0 MH |
515 | return -EOPNOTSUPP; |
516 | ||
5b69bef5 MH |
517 | if (hdev->dev_type != HCI_BREDR) |
518 | return -EOPNOTSUPP; | |
519 | ||
1da177e4 LT |
520 | switch (cmd) { |
521 | case HCISETRAW: | |
522 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 523 | return -EPERM; |
db596681 | 524 | return -EOPNOTSUPP; |
1da177e4 | 525 | |
1da177e4 | 526 | case HCIGETCONNINFO: |
40be492f MH |
527 | return hci_get_conn_info(hdev, (void __user *) arg); |
528 | ||
529 | case HCIGETAUTHINFO: | |
530 | return hci_get_auth_info(hdev, (void __user *) arg); | |
1da177e4 | 531 | |
f0358568 JH |
532 | case HCIBLOCKADDR: |
533 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 534 | return -EPERM; |
b2a66aad | 535 | return hci_sock_blacklist_add(hdev, (void __user *) arg); |
f0358568 JH |
536 | |
537 | case HCIUNBLOCKADDR: | |
538 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 539 | return -EPERM; |
b2a66aad | 540 | return hci_sock_blacklist_del(hdev, (void __user *) arg); |
1da177e4 | 541 | } |
0736cfa8 | 542 | |
324d36ed | 543 | return -ENOIOCTLCMD; |
1da177e4 LT |
544 | } |
545 | ||
8fc9ced3 GP |
546 | static int hci_sock_ioctl(struct socket *sock, unsigned int cmd, |
547 | unsigned long arg) | |
1da177e4 | 548 | { |
40be492f | 549 | void __user *argp = (void __user *) arg; |
0736cfa8 | 550 | struct sock *sk = sock->sk; |
1da177e4 LT |
551 | int err; |
552 | ||
553 | BT_DBG("cmd %x arg %lx", cmd, arg); | |
554 | ||
c1c4f956 MH |
555 | lock_sock(sk); |
556 | ||
557 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) { | |
558 | err = -EBADFD; | |
559 | goto done; | |
560 | } | |
561 | ||
562 | release_sock(sk); | |
563 | ||
1da177e4 LT |
564 | switch (cmd) { |
565 | case HCIGETDEVLIST: | |
566 | return hci_get_dev_list(argp); | |
567 | ||
568 | case HCIGETDEVINFO: | |
569 | return hci_get_dev_info(argp); | |
570 | ||
571 | case HCIGETCONNLIST: | |
572 | return hci_get_conn_list(argp); | |
573 | ||
574 | case HCIDEVUP: | |
575 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 576 | return -EPERM; |
1da177e4 LT |
577 | return hci_dev_open(arg); |
578 | ||
579 | case HCIDEVDOWN: | |
580 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 581 | return -EPERM; |
1da177e4 LT |
582 | return hci_dev_close(arg); |
583 | ||
584 | case HCIDEVRESET: | |
585 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 586 | return -EPERM; |
1da177e4 LT |
587 | return hci_dev_reset(arg); |
588 | ||
589 | case HCIDEVRESTAT: | |
590 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 591 | return -EPERM; |
1da177e4 LT |
592 | return hci_dev_reset_stat(arg); |
593 | ||
594 | case HCISETSCAN: | |
595 | case HCISETAUTH: | |
596 | case HCISETENCRYPT: | |
597 | case HCISETPTYPE: | |
598 | case HCISETLINKPOL: | |
599 | case HCISETLINKMODE: | |
600 | case HCISETACLMTU: | |
601 | case HCISETSCOMTU: | |
602 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 603 | return -EPERM; |
1da177e4 LT |
604 | return hci_dev_cmd(cmd, argp); |
605 | ||
606 | case HCIINQUIRY: | |
607 | return hci_inquiry(argp); | |
1da177e4 | 608 | } |
c1c4f956 MH |
609 | |
610 | lock_sock(sk); | |
611 | ||
612 | err = hci_sock_bound_ioctl(sk, cmd, arg); | |
613 | ||
614 | done: | |
615 | release_sock(sk); | |
616 | return err; | |
1da177e4 LT |
617 | } |
618 | ||
8fc9ced3 GP |
619 | static int hci_sock_bind(struct socket *sock, struct sockaddr *addr, |
620 | int addr_len) | |
1da177e4 | 621 | { |
0381101f | 622 | struct sockaddr_hci haddr; |
1da177e4 LT |
623 | struct sock *sk = sock->sk; |
624 | struct hci_dev *hdev = NULL; | |
0381101f | 625 | int len, err = 0; |
1da177e4 LT |
626 | |
627 | BT_DBG("sock %p sk %p", sock, sk); | |
628 | ||
0381101f JH |
629 | if (!addr) |
630 | return -EINVAL; | |
631 | ||
632 | memset(&haddr, 0, sizeof(haddr)); | |
633 | len = min_t(unsigned int, sizeof(haddr), addr_len); | |
634 | memcpy(&haddr, addr, len); | |
635 | ||
636 | if (haddr.hci_family != AF_BLUETOOTH) | |
637 | return -EINVAL; | |
638 | ||
1da177e4 LT |
639 | lock_sock(sk); |
640 | ||
7cc2ade2 | 641 | if (sk->sk_state == BT_BOUND) { |
1da177e4 LT |
642 | err = -EALREADY; |
643 | goto done; | |
644 | } | |
645 | ||
7cc2ade2 MH |
646 | switch (haddr.hci_channel) { |
647 | case HCI_CHANNEL_RAW: | |
648 | if (hci_pi(sk)->hdev) { | |
649 | err = -EALREADY; | |
1da177e4 LT |
650 | goto done; |
651 | } | |
652 | ||
7cc2ade2 MH |
653 | if (haddr.hci_dev != HCI_DEV_NONE) { |
654 | hdev = hci_dev_get(haddr.hci_dev); | |
655 | if (!hdev) { | |
656 | err = -ENODEV; | |
657 | goto done; | |
658 | } | |
659 | ||
660 | atomic_inc(&hdev->promisc); | |
661 | } | |
662 | ||
663 | hci_pi(sk)->hdev = hdev; | |
664 | break; | |
665 | ||
23500189 MH |
666 | case HCI_CHANNEL_USER: |
667 | if (hci_pi(sk)->hdev) { | |
668 | err = -EALREADY; | |
669 | goto done; | |
670 | } | |
671 | ||
672 | if (haddr.hci_dev == HCI_DEV_NONE) { | |
673 | err = -EINVAL; | |
674 | goto done; | |
675 | } | |
676 | ||
10a8b86f | 677 | if (!capable(CAP_NET_ADMIN)) { |
23500189 MH |
678 | err = -EPERM; |
679 | goto done; | |
680 | } | |
681 | ||
682 | hdev = hci_dev_get(haddr.hci_dev); | |
683 | if (!hdev) { | |
684 | err = -ENODEV; | |
685 | goto done; | |
686 | } | |
687 | ||
688 | if (test_bit(HCI_UP, &hdev->flags) || | |
689 | test_bit(HCI_INIT, &hdev->flags) || | |
d603b76b MH |
690 | test_bit(HCI_SETUP, &hdev->dev_flags) || |
691 | test_bit(HCI_CONFIG, &hdev->dev_flags)) { | |
23500189 MH |
692 | err = -EBUSY; |
693 | hci_dev_put(hdev); | |
694 | goto done; | |
695 | } | |
696 | ||
697 | if (test_and_set_bit(HCI_USER_CHANNEL, &hdev->dev_flags)) { | |
698 | err = -EUSERS; | |
699 | hci_dev_put(hdev); | |
700 | goto done; | |
701 | } | |
702 | ||
0602a8ad | 703 | mgmt_index_removed(hdev); |
23500189 MH |
704 | |
705 | err = hci_dev_open(hdev->id); | |
706 | if (err) { | |
707 | clear_bit(HCI_USER_CHANNEL, &hdev->dev_flags); | |
0602a8ad | 708 | mgmt_index_added(hdev); |
23500189 MH |
709 | hci_dev_put(hdev); |
710 | goto done; | |
711 | } | |
712 | ||
713 | atomic_inc(&hdev->promisc); | |
714 | ||
715 | hci_pi(sk)->hdev = hdev; | |
716 | break; | |
717 | ||
7cc2ade2 | 718 | case HCI_CHANNEL_CONTROL: |
4b95a24c | 719 | if (haddr.hci_dev != HCI_DEV_NONE) { |
7cc2ade2 MH |
720 | err = -EINVAL; |
721 | goto done; | |
722 | } | |
723 | ||
801f13bd MH |
724 | if (!capable(CAP_NET_ADMIN)) { |
725 | err = -EPERM; | |
726 | goto done; | |
727 | } | |
728 | ||
7cc2ade2 MH |
729 | break; |
730 | ||
cd82e61c MH |
731 | case HCI_CHANNEL_MONITOR: |
732 | if (haddr.hci_dev != HCI_DEV_NONE) { | |
733 | err = -EINVAL; | |
734 | goto done; | |
735 | } | |
736 | ||
737 | if (!capable(CAP_NET_RAW)) { | |
738 | err = -EPERM; | |
739 | goto done; | |
740 | } | |
741 | ||
742 | send_monitor_replay(sk); | |
743 | ||
744 | atomic_inc(&monitor_promisc); | |
745 | break; | |
746 | ||
7cc2ade2 MH |
747 | default: |
748 | err = -EINVAL; | |
749 | goto done; | |
1da177e4 LT |
750 | } |
751 | ||
7cc2ade2 | 752 | |
0381101f | 753 | hci_pi(sk)->channel = haddr.hci_channel; |
1da177e4 LT |
754 | sk->sk_state = BT_BOUND; |
755 | ||
756 | done: | |
757 | release_sock(sk); | |
758 | return err; | |
759 | } | |
760 | ||
8fc9ced3 GP |
761 | static int hci_sock_getname(struct socket *sock, struct sockaddr *addr, |
762 | int *addr_len, int peer) | |
1da177e4 LT |
763 | { |
764 | struct sockaddr_hci *haddr = (struct sockaddr_hci *) addr; | |
765 | struct sock *sk = sock->sk; | |
9d4b68b2 MH |
766 | struct hci_dev *hdev; |
767 | int err = 0; | |
1da177e4 LT |
768 | |
769 | BT_DBG("sock %p sk %p", sock, sk); | |
770 | ||
06f43cbc MH |
771 | if (peer) |
772 | return -EOPNOTSUPP; | |
773 | ||
1da177e4 LT |
774 | lock_sock(sk); |
775 | ||
9d4b68b2 MH |
776 | hdev = hci_pi(sk)->hdev; |
777 | if (!hdev) { | |
778 | err = -EBADFD; | |
779 | goto done; | |
780 | } | |
781 | ||
1da177e4 LT |
782 | *addr_len = sizeof(*haddr); |
783 | haddr->hci_family = AF_BLUETOOTH; | |
7b005bd3 | 784 | haddr->hci_dev = hdev->id; |
9d4b68b2 | 785 | haddr->hci_channel= hci_pi(sk)->channel; |
1da177e4 | 786 | |
9d4b68b2 | 787 | done: |
1da177e4 | 788 | release_sock(sk); |
9d4b68b2 | 789 | return err; |
1da177e4 LT |
790 | } |
791 | ||
6039aa73 GP |
792 | static void hci_sock_cmsg(struct sock *sk, struct msghdr *msg, |
793 | struct sk_buff *skb) | |
1da177e4 LT |
794 | { |
795 | __u32 mask = hci_pi(sk)->cmsg_mask; | |
796 | ||
0d48d939 MH |
797 | if (mask & HCI_CMSG_DIR) { |
798 | int incoming = bt_cb(skb)->incoming; | |
8fc9ced3 GP |
799 | put_cmsg(msg, SOL_HCI, HCI_CMSG_DIR, sizeof(incoming), |
800 | &incoming); | |
0d48d939 | 801 | } |
1da177e4 | 802 | |
a61bbcf2 | 803 | if (mask & HCI_CMSG_TSTAMP) { |
f6e623a6 JFS |
804 | #ifdef CONFIG_COMPAT |
805 | struct compat_timeval ctv; | |
806 | #endif | |
a61bbcf2 | 807 | struct timeval tv; |
767c5eb5 MH |
808 | void *data; |
809 | int len; | |
a61bbcf2 PM |
810 | |
811 | skb_get_timestamp(skb, &tv); | |
767c5eb5 | 812 | |
1da97f83 DM |
813 | data = &tv; |
814 | len = sizeof(tv); | |
815 | #ifdef CONFIG_COMPAT | |
da88cea1 L |
816 | if (!COMPAT_USE_64BIT_TIME && |
817 | (msg->msg_flags & MSG_CMSG_COMPAT)) { | |
767c5eb5 MH |
818 | ctv.tv_sec = tv.tv_sec; |
819 | ctv.tv_usec = tv.tv_usec; | |
820 | data = &ctv; | |
821 | len = sizeof(ctv); | |
767c5eb5 | 822 | } |
1da97f83 | 823 | #endif |
767c5eb5 MH |
824 | |
825 | put_cmsg(msg, SOL_HCI, HCI_CMSG_TSTAMP, len, data); | |
a61bbcf2 | 826 | } |
1da177e4 | 827 | } |
8e87d142 YH |
828 | |
829 | static int hci_sock_recvmsg(struct kiocb *iocb, struct socket *sock, | |
3bb3c755 | 830 | struct msghdr *msg, size_t len, int flags) |
1da177e4 LT |
831 | { |
832 | int noblock = flags & MSG_DONTWAIT; | |
833 | struct sock *sk = sock->sk; | |
834 | struct sk_buff *skb; | |
835 | int copied, err; | |
836 | ||
837 | BT_DBG("sock %p, sk %p", sock, sk); | |
838 | ||
839 | if (flags & (MSG_OOB)) | |
840 | return -EOPNOTSUPP; | |
841 | ||
842 | if (sk->sk_state == BT_CLOSED) | |
843 | return 0; | |
844 | ||
70f23020 AE |
845 | skb = skb_recv_datagram(sk, flags, noblock, &err); |
846 | if (!skb) | |
1da177e4 LT |
847 | return err; |
848 | ||
1da177e4 LT |
849 | copied = skb->len; |
850 | if (len < copied) { | |
851 | msg->msg_flags |= MSG_TRUNC; | |
852 | copied = len; | |
853 | } | |
854 | ||
badff6d0 | 855 | skb_reset_transport_header(skb); |
51f3d02b | 856 | err = skb_copy_datagram_msg(skb, 0, msg, copied); |
1da177e4 | 857 | |
3a208627 MH |
858 | switch (hci_pi(sk)->channel) { |
859 | case HCI_CHANNEL_RAW: | |
860 | hci_sock_cmsg(sk, msg, skb); | |
861 | break; | |
23500189 | 862 | case HCI_CHANNEL_USER: |
97e0bdeb | 863 | case HCI_CHANNEL_CONTROL: |
cd82e61c MH |
864 | case HCI_CHANNEL_MONITOR: |
865 | sock_recv_timestamp(msg, sk, skb); | |
866 | break; | |
3a208627 | 867 | } |
1da177e4 LT |
868 | |
869 | skb_free_datagram(sk, skb); | |
870 | ||
871 | return err ? : copied; | |
872 | } | |
873 | ||
8e87d142 | 874 | static int hci_sock_sendmsg(struct kiocb *iocb, struct socket *sock, |
1da177e4 LT |
875 | struct msghdr *msg, size_t len) |
876 | { | |
877 | struct sock *sk = sock->sk; | |
878 | struct hci_dev *hdev; | |
879 | struct sk_buff *skb; | |
880 | int err; | |
881 | ||
882 | BT_DBG("sock %p sk %p", sock, sk); | |
883 | ||
884 | if (msg->msg_flags & MSG_OOB) | |
885 | return -EOPNOTSUPP; | |
886 | ||
887 | if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_NOSIGNAL|MSG_ERRQUEUE)) | |
888 | return -EINVAL; | |
889 | ||
890 | if (len < 4 || len > HCI_MAX_FRAME_SIZE) | |
891 | return -EINVAL; | |
892 | ||
893 | lock_sock(sk); | |
894 | ||
0381101f JH |
895 | switch (hci_pi(sk)->channel) { |
896 | case HCI_CHANNEL_RAW: | |
23500189 | 897 | case HCI_CHANNEL_USER: |
0381101f JH |
898 | break; |
899 | case HCI_CHANNEL_CONTROL: | |
900 | err = mgmt_control(sk, msg, len); | |
901 | goto done; | |
cd82e61c MH |
902 | case HCI_CHANNEL_MONITOR: |
903 | err = -EOPNOTSUPP; | |
904 | goto done; | |
0381101f JH |
905 | default: |
906 | err = -EINVAL; | |
907 | goto done; | |
908 | } | |
909 | ||
70f23020 AE |
910 | hdev = hci_pi(sk)->hdev; |
911 | if (!hdev) { | |
1da177e4 LT |
912 | err = -EBADFD; |
913 | goto done; | |
914 | } | |
915 | ||
7e21addc MH |
916 | if (!test_bit(HCI_UP, &hdev->flags)) { |
917 | err = -ENETDOWN; | |
918 | goto done; | |
919 | } | |
920 | ||
70f23020 AE |
921 | skb = bt_skb_send_alloc(sk, len, msg->msg_flags & MSG_DONTWAIT, &err); |
922 | if (!skb) | |
1da177e4 LT |
923 | goto done; |
924 | ||
6ce8e9ce | 925 | if (memcpy_from_msg(skb_put(skb, len), msg, len)) { |
1da177e4 LT |
926 | err = -EFAULT; |
927 | goto drop; | |
928 | } | |
929 | ||
0d48d939 | 930 | bt_cb(skb)->pkt_type = *((unsigned char *) skb->data); |
1da177e4 | 931 | skb_pull(skb, 1); |
1da177e4 | 932 | |
1bc5ad16 MH |
933 | if (hci_pi(sk)->channel == HCI_CHANNEL_USER) { |
934 | /* No permission check is needed for user channel | |
935 | * since that gets enforced when binding the socket. | |
936 | * | |
937 | * However check that the packet type is valid. | |
938 | */ | |
939 | if (bt_cb(skb)->pkt_type != HCI_COMMAND_PKT && | |
940 | bt_cb(skb)->pkt_type != HCI_ACLDATA_PKT && | |
941 | bt_cb(skb)->pkt_type != HCI_SCODATA_PKT) { | |
942 | err = -EINVAL; | |
943 | goto drop; | |
944 | } | |
945 | ||
946 | skb_queue_tail(&hdev->raw_q, skb); | |
947 | queue_work(hdev->workqueue, &hdev->tx_work); | |
948 | } else if (bt_cb(skb)->pkt_type == HCI_COMMAND_PKT) { | |
83985319 | 949 | u16 opcode = get_unaligned_le16(skb->data); |
1da177e4 LT |
950 | u16 ogf = hci_opcode_ogf(opcode); |
951 | u16 ocf = hci_opcode_ocf(opcode); | |
952 | ||
953 | if (((ogf > HCI_SFLT_MAX_OGF) || | |
3bb3c755 GP |
954 | !hci_test_bit(ocf & HCI_FLT_OCF_BITS, |
955 | &hci_sec_filter.ocf_mask[ogf])) && | |
956 | !capable(CAP_NET_RAW)) { | |
1da177e4 LT |
957 | err = -EPERM; |
958 | goto drop; | |
959 | } | |
960 | ||
fee746b0 | 961 | if (ogf == 0x3f) { |
1da177e4 | 962 | skb_queue_tail(&hdev->raw_q, skb); |
3eff45ea | 963 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 964 | } else { |
49c922bb | 965 | /* Stand-alone HCI commands must be flagged as |
11714b3d JH |
966 | * single-command requests. |
967 | */ | |
968 | bt_cb(skb)->req.start = true; | |
969 | ||
1da177e4 | 970 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 971 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
972 | } |
973 | } else { | |
974 | if (!capable(CAP_NET_RAW)) { | |
975 | err = -EPERM; | |
976 | goto drop; | |
977 | } | |
978 | ||
979 | skb_queue_tail(&hdev->raw_q, skb); | |
3eff45ea | 980 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 LT |
981 | } |
982 | ||
983 | err = len; | |
984 | ||
985 | done: | |
986 | release_sock(sk); | |
987 | return err; | |
988 | ||
989 | drop: | |
990 | kfree_skb(skb); | |
991 | goto done; | |
992 | } | |
993 | ||
8fc9ced3 GP |
994 | static int hci_sock_setsockopt(struct socket *sock, int level, int optname, |
995 | char __user *optval, unsigned int len) | |
1da177e4 LT |
996 | { |
997 | struct hci_ufilter uf = { .opcode = 0 }; | |
998 | struct sock *sk = sock->sk; | |
999 | int err = 0, opt = 0; | |
1000 | ||
1001 | BT_DBG("sk %p, opt %d", sk, optname); | |
1002 | ||
1003 | lock_sock(sk); | |
1004 | ||
2f39cdb7 | 1005 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) { |
c2371e80 | 1006 | err = -EBADFD; |
2f39cdb7 MH |
1007 | goto done; |
1008 | } | |
1009 | ||
1da177e4 LT |
1010 | switch (optname) { |
1011 | case HCI_DATA_DIR: | |
1012 | if (get_user(opt, (int __user *)optval)) { | |
1013 | err = -EFAULT; | |
1014 | break; | |
1015 | } | |
1016 | ||
1017 | if (opt) | |
1018 | hci_pi(sk)->cmsg_mask |= HCI_CMSG_DIR; | |
1019 | else | |
1020 | hci_pi(sk)->cmsg_mask &= ~HCI_CMSG_DIR; | |
1021 | break; | |
1022 | ||
1023 | case HCI_TIME_STAMP: | |
1024 | if (get_user(opt, (int __user *)optval)) { | |
1025 | err = -EFAULT; | |
1026 | break; | |
1027 | } | |
1028 | ||
1029 | if (opt) | |
1030 | hci_pi(sk)->cmsg_mask |= HCI_CMSG_TSTAMP; | |
1031 | else | |
1032 | hci_pi(sk)->cmsg_mask &= ~HCI_CMSG_TSTAMP; | |
1033 | break; | |
1034 | ||
1035 | case HCI_FILTER: | |
0878b666 MH |
1036 | { |
1037 | struct hci_filter *f = &hci_pi(sk)->filter; | |
1038 | ||
1039 | uf.type_mask = f->type_mask; | |
1040 | uf.opcode = f->opcode; | |
1041 | uf.event_mask[0] = *((u32 *) f->event_mask + 0); | |
1042 | uf.event_mask[1] = *((u32 *) f->event_mask + 1); | |
1043 | } | |
1044 | ||
1da177e4 LT |
1045 | len = min_t(unsigned int, len, sizeof(uf)); |
1046 | if (copy_from_user(&uf, optval, len)) { | |
1047 | err = -EFAULT; | |
1048 | break; | |
1049 | } | |
1050 | ||
1051 | if (!capable(CAP_NET_RAW)) { | |
1052 | uf.type_mask &= hci_sec_filter.type_mask; | |
1053 | uf.event_mask[0] &= *((u32 *) hci_sec_filter.event_mask + 0); | |
1054 | uf.event_mask[1] &= *((u32 *) hci_sec_filter.event_mask + 1); | |
1055 | } | |
1056 | ||
1057 | { | |
1058 | struct hci_filter *f = &hci_pi(sk)->filter; | |
1059 | ||
1060 | f->type_mask = uf.type_mask; | |
1061 | f->opcode = uf.opcode; | |
1062 | *((u32 *) f->event_mask + 0) = uf.event_mask[0]; | |
1063 | *((u32 *) f->event_mask + 1) = uf.event_mask[1]; | |
1064 | } | |
8e87d142 | 1065 | break; |
1da177e4 LT |
1066 | |
1067 | default: | |
1068 | err = -ENOPROTOOPT; | |
1069 | break; | |
1070 | } | |
1071 | ||
2f39cdb7 | 1072 | done: |
1da177e4 LT |
1073 | release_sock(sk); |
1074 | return err; | |
1075 | } | |
1076 | ||
8fc9ced3 GP |
1077 | static int hci_sock_getsockopt(struct socket *sock, int level, int optname, |
1078 | char __user *optval, int __user *optlen) | |
1da177e4 LT |
1079 | { |
1080 | struct hci_ufilter uf; | |
1081 | struct sock *sk = sock->sk; | |
cedc5469 MH |
1082 | int len, opt, err = 0; |
1083 | ||
1084 | BT_DBG("sk %p, opt %d", sk, optname); | |
1da177e4 LT |
1085 | |
1086 | if (get_user(len, optlen)) | |
1087 | return -EFAULT; | |
1088 | ||
cedc5469 MH |
1089 | lock_sock(sk); |
1090 | ||
1091 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) { | |
c2371e80 | 1092 | err = -EBADFD; |
cedc5469 MH |
1093 | goto done; |
1094 | } | |
1095 | ||
1da177e4 LT |
1096 | switch (optname) { |
1097 | case HCI_DATA_DIR: | |
1098 | if (hci_pi(sk)->cmsg_mask & HCI_CMSG_DIR) | |
1099 | opt = 1; | |
8e87d142 | 1100 | else |
1da177e4 LT |
1101 | opt = 0; |
1102 | ||
1103 | if (put_user(opt, optval)) | |
cedc5469 | 1104 | err = -EFAULT; |
1da177e4 LT |
1105 | break; |
1106 | ||
1107 | case HCI_TIME_STAMP: | |
1108 | if (hci_pi(sk)->cmsg_mask & HCI_CMSG_TSTAMP) | |
1109 | opt = 1; | |
8e87d142 | 1110 | else |
1da177e4 LT |
1111 | opt = 0; |
1112 | ||
1113 | if (put_user(opt, optval)) | |
cedc5469 | 1114 | err = -EFAULT; |
1da177e4 LT |
1115 | break; |
1116 | ||
1117 | case HCI_FILTER: | |
1118 | { | |
1119 | struct hci_filter *f = &hci_pi(sk)->filter; | |
1120 | ||
e15ca9a0 | 1121 | memset(&uf, 0, sizeof(uf)); |
1da177e4 LT |
1122 | uf.type_mask = f->type_mask; |
1123 | uf.opcode = f->opcode; | |
1124 | uf.event_mask[0] = *((u32 *) f->event_mask + 0); | |
1125 | uf.event_mask[1] = *((u32 *) f->event_mask + 1); | |
1126 | } | |
1127 | ||
1128 | len = min_t(unsigned int, len, sizeof(uf)); | |
1129 | if (copy_to_user(optval, &uf, len)) | |
cedc5469 | 1130 | err = -EFAULT; |
1da177e4 LT |
1131 | break; |
1132 | ||
1133 | default: | |
cedc5469 | 1134 | err = -ENOPROTOOPT; |
1da177e4 LT |
1135 | break; |
1136 | } | |
1137 | ||
cedc5469 MH |
1138 | done: |
1139 | release_sock(sk); | |
1140 | return err; | |
1da177e4 LT |
1141 | } |
1142 | ||
90ddc4f0 | 1143 | static const struct proto_ops hci_sock_ops = { |
1da177e4 LT |
1144 | .family = PF_BLUETOOTH, |
1145 | .owner = THIS_MODULE, | |
1146 | .release = hci_sock_release, | |
1147 | .bind = hci_sock_bind, | |
1148 | .getname = hci_sock_getname, | |
1149 | .sendmsg = hci_sock_sendmsg, | |
1150 | .recvmsg = hci_sock_recvmsg, | |
1151 | .ioctl = hci_sock_ioctl, | |
1152 | .poll = datagram_poll, | |
1153 | .listen = sock_no_listen, | |
1154 | .shutdown = sock_no_shutdown, | |
1155 | .setsockopt = hci_sock_setsockopt, | |
1156 | .getsockopt = hci_sock_getsockopt, | |
1157 | .connect = sock_no_connect, | |
1158 | .socketpair = sock_no_socketpair, | |
1159 | .accept = sock_no_accept, | |
1160 | .mmap = sock_no_mmap | |
1161 | }; | |
1162 | ||
1163 | static struct proto hci_sk_proto = { | |
1164 | .name = "HCI", | |
1165 | .owner = THIS_MODULE, | |
1166 | .obj_size = sizeof(struct hci_pinfo) | |
1167 | }; | |
1168 | ||
3f378b68 EP |
1169 | static int hci_sock_create(struct net *net, struct socket *sock, int protocol, |
1170 | int kern) | |
1da177e4 LT |
1171 | { |
1172 | struct sock *sk; | |
1173 | ||
1174 | BT_DBG("sock %p", sock); | |
1175 | ||
1176 | if (sock->type != SOCK_RAW) | |
1177 | return -ESOCKTNOSUPPORT; | |
1178 | ||
1179 | sock->ops = &hci_sock_ops; | |
1180 | ||
6257ff21 | 1181 | sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &hci_sk_proto); |
1da177e4 LT |
1182 | if (!sk) |
1183 | return -ENOMEM; | |
1184 | ||
1185 | sock_init_data(sock, sk); | |
1186 | ||
1187 | sock_reset_flag(sk, SOCK_ZAPPED); | |
1188 | ||
1189 | sk->sk_protocol = protocol; | |
1190 | ||
1191 | sock->state = SS_UNCONNECTED; | |
1192 | sk->sk_state = BT_OPEN; | |
1193 | ||
1194 | bt_sock_link(&hci_sk_list, sk); | |
1195 | return 0; | |
1196 | } | |
1197 | ||
ec1b4cf7 | 1198 | static const struct net_proto_family hci_sock_family_ops = { |
1da177e4 LT |
1199 | .family = PF_BLUETOOTH, |
1200 | .owner = THIS_MODULE, | |
1201 | .create = hci_sock_create, | |
1202 | }; | |
1203 | ||
1da177e4 LT |
1204 | int __init hci_sock_init(void) |
1205 | { | |
1206 | int err; | |
1207 | ||
b0a8e282 MH |
1208 | BUILD_BUG_ON(sizeof(struct sockaddr_hci) > sizeof(struct sockaddr)); |
1209 | ||
1da177e4 LT |
1210 | err = proto_register(&hci_sk_proto, 0); |
1211 | if (err < 0) | |
1212 | return err; | |
1213 | ||
1214 | err = bt_sock_register(BTPROTO_HCI, &hci_sock_family_ops); | |
f7c86637 MY |
1215 | if (err < 0) { |
1216 | BT_ERR("HCI socket registration failed"); | |
1da177e4 | 1217 | goto error; |
f7c86637 MY |
1218 | } |
1219 | ||
b0316615 | 1220 | err = bt_procfs_init(&init_net, "hci", &hci_sk_list, NULL); |
f7c86637 MY |
1221 | if (err < 0) { |
1222 | BT_ERR("Failed to create HCI proc file"); | |
1223 | bt_sock_unregister(BTPROTO_HCI); | |
1224 | goto error; | |
1225 | } | |
1da177e4 | 1226 | |
1da177e4 LT |
1227 | BT_INFO("HCI socket layer initialized"); |
1228 | ||
1229 | return 0; | |
1230 | ||
1231 | error: | |
1da177e4 LT |
1232 | proto_unregister(&hci_sk_proto); |
1233 | return err; | |
1234 | } | |
1235 | ||
b7440a14 | 1236 | void hci_sock_cleanup(void) |
1da177e4 | 1237 | { |
f7c86637 | 1238 | bt_procfs_cleanup(&init_net, "hci"); |
5e9d7f86 | 1239 | bt_sock_unregister(BTPROTO_HCI); |
1da177e4 | 1240 | proto_unregister(&hci_sk_proto); |
1da177e4 | 1241 | } |