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 | |
801c1e8d JH |
34 | static LIST_HEAD(mgmt_chan_list); |
35 | static DEFINE_MUTEX(mgmt_chan_list_lock); | |
36 | ||
cd82e61c MH |
37 | static atomic_t monitor_promisc = ATOMIC_INIT(0); |
38 | ||
1da177e4 LT |
39 | /* ----- HCI socket interface ----- */ |
40 | ||
863def58 MH |
41 | /* Socket info */ |
42 | #define hci_pi(sk) ((struct hci_pinfo *) sk) | |
43 | ||
44 | struct hci_pinfo { | |
45 | struct bt_sock bt; | |
46 | struct hci_dev *hdev; | |
47 | struct hci_filter filter; | |
48 | __u32 cmsg_mask; | |
49 | unsigned short channel; | |
6befc644 | 50 | unsigned long flags; |
863def58 MH |
51 | }; |
52 | ||
6befc644 MH |
53 | void hci_sock_set_flag(struct sock *sk, int nr) |
54 | { | |
55 | set_bit(nr, &hci_pi(sk)->flags); | |
56 | } | |
57 | ||
58 | void hci_sock_clear_flag(struct sock *sk, int nr) | |
59 | { | |
60 | clear_bit(nr, &hci_pi(sk)->flags); | |
61 | } | |
62 | ||
9391976a | 63 | static inline int hci_test_bit(int nr, const void *addr) |
1da177e4 | 64 | { |
9391976a | 65 | return *((const __u32 *) addr + (nr >> 5)) & ((__u32) 1 << (nr & 31)); |
1da177e4 LT |
66 | } |
67 | ||
68 | /* Security filter */ | |
3ad254f7 MH |
69 | #define HCI_SFLT_MAX_OGF 5 |
70 | ||
71 | struct hci_sec_filter { | |
72 | __u32 type_mask; | |
73 | __u32 event_mask[2]; | |
74 | __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4]; | |
75 | }; | |
76 | ||
7e67c112 | 77 | static const struct hci_sec_filter hci_sec_filter = { |
1da177e4 LT |
78 | /* Packet types */ |
79 | 0x10, | |
80 | /* Events */ | |
dd7f5527 | 81 | { 0x1000d9fe, 0x0000b00c }, |
1da177e4 LT |
82 | /* Commands */ |
83 | { | |
84 | { 0x0 }, | |
85 | /* OGF_LINK_CTL */ | |
7c631a67 | 86 | { 0xbe000006, 0x00000001, 0x00000000, 0x00 }, |
1da177e4 | 87 | /* OGF_LINK_POLICY */ |
7c631a67 | 88 | { 0x00005200, 0x00000000, 0x00000000, 0x00 }, |
1da177e4 | 89 | /* OGF_HOST_CTL */ |
7c631a67 | 90 | { 0xaab00200, 0x2b402aaa, 0x05220154, 0x00 }, |
1da177e4 | 91 | /* OGF_INFO_PARAM */ |
7c631a67 | 92 | { 0x000002be, 0x00000000, 0x00000000, 0x00 }, |
1da177e4 | 93 | /* OGF_STATUS_PARAM */ |
7c631a67 | 94 | { 0x000000ea, 0x00000000, 0x00000000, 0x00 } |
1da177e4 LT |
95 | } |
96 | }; | |
97 | ||
98 | static struct bt_sock_list hci_sk_list = { | |
d5fb2962 | 99 | .lock = __RW_LOCK_UNLOCKED(hci_sk_list.lock) |
1da177e4 LT |
100 | }; |
101 | ||
f81fe64f MH |
102 | static bool is_filtered_packet(struct sock *sk, struct sk_buff *skb) |
103 | { | |
104 | struct hci_filter *flt; | |
105 | int flt_type, flt_event; | |
106 | ||
107 | /* Apply filter */ | |
108 | flt = &hci_pi(sk)->filter; | |
109 | ||
110 | if (bt_cb(skb)->pkt_type == HCI_VENDOR_PKT) | |
111 | flt_type = 0; | |
112 | else | |
113 | flt_type = bt_cb(skb)->pkt_type & HCI_FLT_TYPE_BITS; | |
114 | ||
115 | if (!test_bit(flt_type, &flt->type_mask)) | |
116 | return true; | |
117 | ||
118 | /* Extra filter for event packets only */ | |
119 | if (bt_cb(skb)->pkt_type != HCI_EVENT_PKT) | |
120 | return false; | |
121 | ||
122 | flt_event = (*(__u8 *)skb->data & HCI_FLT_EVENT_BITS); | |
123 | ||
124 | if (!hci_test_bit(flt_event, &flt->event_mask)) | |
125 | return true; | |
126 | ||
127 | /* Check filter only when opcode is set */ | |
128 | if (!flt->opcode) | |
129 | return false; | |
130 | ||
131 | if (flt_event == HCI_EV_CMD_COMPLETE && | |
132 | flt->opcode != get_unaligned((__le16 *)(skb->data + 3))) | |
133 | return true; | |
134 | ||
135 | if (flt_event == HCI_EV_CMD_STATUS && | |
136 | flt->opcode != get_unaligned((__le16 *)(skb->data + 4))) | |
137 | return true; | |
138 | ||
139 | return false; | |
140 | } | |
141 | ||
1da177e4 | 142 | /* Send frame to RAW socket */ |
470fe1b5 | 143 | void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
144 | { |
145 | struct sock *sk; | |
e0edf373 | 146 | struct sk_buff *skb_copy = NULL; |
1da177e4 LT |
147 | |
148 | BT_DBG("hdev %p len %d", hdev, skb->len); | |
149 | ||
150 | read_lock(&hci_sk_list.lock); | |
470fe1b5 | 151 | |
b67bfe0d | 152 | sk_for_each(sk, &hci_sk_list.head) { |
1da177e4 LT |
153 | struct sk_buff *nskb; |
154 | ||
155 | if (sk->sk_state != BT_BOUND || hci_pi(sk)->hdev != hdev) | |
156 | continue; | |
157 | ||
158 | /* Don't send frame to the socket it came from */ | |
159 | if (skb->sk == sk) | |
160 | continue; | |
161 | ||
23500189 MH |
162 | if (hci_pi(sk)->channel == HCI_CHANNEL_RAW) { |
163 | if (is_filtered_packet(sk, skb)) | |
164 | continue; | |
165 | } else if (hci_pi(sk)->channel == HCI_CHANNEL_USER) { | |
166 | if (!bt_cb(skb)->incoming) | |
167 | continue; | |
168 | if (bt_cb(skb)->pkt_type != HCI_EVENT_PKT && | |
169 | bt_cb(skb)->pkt_type != HCI_ACLDATA_PKT && | |
170 | bt_cb(skb)->pkt_type != HCI_SCODATA_PKT) | |
171 | continue; | |
172 | } else { | |
173 | /* Don't send frame to other channel types */ | |
1da177e4 | 174 | continue; |
23500189 | 175 | } |
1da177e4 | 176 | |
e0edf373 MH |
177 | if (!skb_copy) { |
178 | /* Create a private copy with headroom */ | |
bad93e9d | 179 | skb_copy = __pskb_copy_fclone(skb, 1, GFP_ATOMIC, true); |
e0edf373 MH |
180 | if (!skb_copy) |
181 | continue; | |
182 | ||
183 | /* Put type byte before the data */ | |
184 | memcpy(skb_push(skb_copy, 1), &bt_cb(skb)->pkt_type, 1); | |
185 | } | |
186 | ||
187 | nskb = skb_clone(skb_copy, GFP_ATOMIC); | |
70f23020 | 188 | if (!nskb) |
1da177e4 LT |
189 | continue; |
190 | ||
470fe1b5 MH |
191 | if (sock_queue_rcv_skb(sk, nskb)) |
192 | kfree_skb(nskb); | |
193 | } | |
194 | ||
195 | read_unlock(&hci_sk_list.lock); | |
e0edf373 MH |
196 | |
197 | kfree_skb(skb_copy); | |
470fe1b5 MH |
198 | } |
199 | ||
7129069e JH |
200 | /* Send frame to sockets with specific channel */ |
201 | void hci_send_to_channel(unsigned short channel, struct sk_buff *skb, | |
202 | struct sock *skip_sk) | |
470fe1b5 MH |
203 | { |
204 | struct sock *sk; | |
470fe1b5 | 205 | |
7129069e | 206 | BT_DBG("channel %u len %d", channel, skb->len); |
470fe1b5 MH |
207 | |
208 | read_lock(&hci_sk_list.lock); | |
209 | ||
b67bfe0d | 210 | sk_for_each(sk, &hci_sk_list.head) { |
470fe1b5 MH |
211 | struct sk_buff *nskb; |
212 | ||
213 | /* Skip the original socket */ | |
214 | if (sk == skip_sk) | |
215 | continue; | |
216 | ||
217 | if (sk->sk_state != BT_BOUND) | |
218 | continue; | |
219 | ||
7129069e | 220 | if (hci_pi(sk)->channel != channel) |
d7f72f61 MH |
221 | continue; |
222 | ||
223 | nskb = skb_clone(skb, GFP_ATOMIC); | |
224 | if (!nskb) | |
225 | continue; | |
226 | ||
227 | if (sock_queue_rcv_skb(sk, nskb)) | |
228 | kfree_skb(nskb); | |
229 | } | |
230 | ||
231 | read_unlock(&hci_sk_list.lock); | |
232 | } | |
233 | ||
cd82e61c MH |
234 | /* Send frame to monitor socket */ |
235 | void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb) | |
236 | { | |
cd82e61c | 237 | struct sk_buff *skb_copy = NULL; |
2b531294 | 238 | struct hci_mon_hdr *hdr; |
cd82e61c MH |
239 | __le16 opcode; |
240 | ||
241 | if (!atomic_read(&monitor_promisc)) | |
242 | return; | |
243 | ||
244 | BT_DBG("hdev %p len %d", hdev, skb->len); | |
245 | ||
246 | switch (bt_cb(skb)->pkt_type) { | |
247 | case HCI_COMMAND_PKT: | |
dcf4adbf | 248 | opcode = cpu_to_le16(HCI_MON_COMMAND_PKT); |
cd82e61c MH |
249 | break; |
250 | case HCI_EVENT_PKT: | |
dcf4adbf | 251 | opcode = cpu_to_le16(HCI_MON_EVENT_PKT); |
cd82e61c MH |
252 | break; |
253 | case HCI_ACLDATA_PKT: | |
254 | if (bt_cb(skb)->incoming) | |
dcf4adbf | 255 | opcode = cpu_to_le16(HCI_MON_ACL_RX_PKT); |
cd82e61c | 256 | else |
dcf4adbf | 257 | opcode = cpu_to_le16(HCI_MON_ACL_TX_PKT); |
cd82e61c MH |
258 | break; |
259 | case HCI_SCODATA_PKT: | |
260 | if (bt_cb(skb)->incoming) | |
dcf4adbf | 261 | opcode = cpu_to_le16(HCI_MON_SCO_RX_PKT); |
cd82e61c | 262 | else |
dcf4adbf | 263 | opcode = cpu_to_le16(HCI_MON_SCO_TX_PKT); |
cd82e61c MH |
264 | break; |
265 | default: | |
266 | return; | |
267 | } | |
268 | ||
2b531294 MH |
269 | /* Create a private copy with headroom */ |
270 | skb_copy = __pskb_copy_fclone(skb, HCI_MON_HDR_SIZE, GFP_ATOMIC, true); | |
271 | if (!skb_copy) | |
272 | return; | |
273 | ||
274 | /* Put header before the data */ | |
275 | hdr = (void *) skb_push(skb_copy, HCI_MON_HDR_SIZE); | |
276 | hdr->opcode = opcode; | |
277 | hdr->index = cpu_to_le16(hdev->id); | |
278 | hdr->len = cpu_to_le16(skb->len); | |
279 | ||
03f310ef | 280 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb_copy, NULL); |
cd82e61c MH |
281 | kfree_skb(skb_copy); |
282 | } | |
283 | ||
cd82e61c MH |
284 | static struct sk_buff *create_monitor_event(struct hci_dev *hdev, int event) |
285 | { | |
286 | struct hci_mon_hdr *hdr; | |
287 | struct hci_mon_new_index *ni; | |
288 | struct sk_buff *skb; | |
289 | __le16 opcode; | |
290 | ||
291 | switch (event) { | |
292 | case HCI_DEV_REG: | |
293 | skb = bt_skb_alloc(HCI_MON_NEW_INDEX_SIZE, GFP_ATOMIC); | |
294 | if (!skb) | |
295 | return NULL; | |
296 | ||
297 | ni = (void *) skb_put(skb, HCI_MON_NEW_INDEX_SIZE); | |
298 | ni->type = hdev->dev_type; | |
299 | ni->bus = hdev->bus; | |
300 | bacpy(&ni->bdaddr, &hdev->bdaddr); | |
301 | memcpy(ni->name, hdev->name, 8); | |
302 | ||
dcf4adbf | 303 | opcode = cpu_to_le16(HCI_MON_NEW_INDEX); |
cd82e61c MH |
304 | break; |
305 | ||
306 | case HCI_DEV_UNREG: | |
307 | skb = bt_skb_alloc(0, GFP_ATOMIC); | |
308 | if (!skb) | |
309 | return NULL; | |
310 | ||
dcf4adbf | 311 | opcode = cpu_to_le16(HCI_MON_DEL_INDEX); |
cd82e61c MH |
312 | break; |
313 | ||
314 | default: | |
315 | return NULL; | |
316 | } | |
317 | ||
318 | __net_timestamp(skb); | |
319 | ||
320 | hdr = (void *) skb_push(skb, HCI_MON_HDR_SIZE); | |
321 | hdr->opcode = opcode; | |
322 | hdr->index = cpu_to_le16(hdev->id); | |
323 | hdr->len = cpu_to_le16(skb->len - HCI_MON_HDR_SIZE); | |
324 | ||
325 | return skb; | |
326 | } | |
327 | ||
328 | static void send_monitor_replay(struct sock *sk) | |
329 | { | |
330 | struct hci_dev *hdev; | |
331 | ||
332 | read_lock(&hci_dev_list_lock); | |
333 | ||
334 | list_for_each_entry(hdev, &hci_dev_list, list) { | |
335 | struct sk_buff *skb; | |
336 | ||
337 | skb = create_monitor_event(hdev, HCI_DEV_REG); | |
338 | if (!skb) | |
339 | continue; | |
340 | ||
341 | if (sock_queue_rcv_skb(sk, skb)) | |
342 | kfree_skb(skb); | |
343 | } | |
344 | ||
345 | read_unlock(&hci_dev_list_lock); | |
346 | } | |
347 | ||
040030ef MH |
348 | /* Generate internal stack event */ |
349 | static void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data) | |
350 | { | |
351 | struct hci_event_hdr *hdr; | |
352 | struct hci_ev_stack_internal *ev; | |
353 | struct sk_buff *skb; | |
354 | ||
355 | skb = bt_skb_alloc(HCI_EVENT_HDR_SIZE + sizeof(*ev) + dlen, GFP_ATOMIC); | |
356 | if (!skb) | |
357 | return; | |
358 | ||
359 | hdr = (void *) skb_put(skb, HCI_EVENT_HDR_SIZE); | |
360 | hdr->evt = HCI_EV_STACK_INTERNAL; | |
361 | hdr->plen = sizeof(*ev) + dlen; | |
362 | ||
363 | ev = (void *) skb_put(skb, sizeof(*ev) + dlen); | |
364 | ev->type = type; | |
365 | memcpy(ev->data, data, dlen); | |
366 | ||
367 | bt_cb(skb)->incoming = 1; | |
368 | __net_timestamp(skb); | |
369 | ||
370 | bt_cb(skb)->pkt_type = HCI_EVENT_PKT; | |
040030ef MH |
371 | hci_send_to_sock(hdev, skb); |
372 | kfree_skb(skb); | |
373 | } | |
374 | ||
375 | void hci_sock_dev_event(struct hci_dev *hdev, int event) | |
376 | { | |
377 | struct hci_ev_si_device ev; | |
378 | ||
379 | BT_DBG("hdev %s event %d", hdev->name, event); | |
380 | ||
cd82e61c MH |
381 | /* Send event to monitor */ |
382 | if (atomic_read(&monitor_promisc)) { | |
383 | struct sk_buff *skb; | |
384 | ||
385 | skb = create_monitor_event(hdev, event); | |
386 | if (skb) { | |
03f310ef | 387 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, NULL); |
cd82e61c MH |
388 | kfree_skb(skb); |
389 | } | |
390 | } | |
391 | ||
040030ef MH |
392 | /* Send event to sockets */ |
393 | ev.event = event; | |
394 | ev.dev_id = hdev->id; | |
395 | hci_si_event(NULL, HCI_EV_SI_DEVICE, sizeof(ev), &ev); | |
396 | ||
397 | if (event == HCI_DEV_UNREG) { | |
398 | struct sock *sk; | |
040030ef MH |
399 | |
400 | /* Detach sockets from device */ | |
401 | read_lock(&hci_sk_list.lock); | |
b67bfe0d | 402 | sk_for_each(sk, &hci_sk_list.head) { |
040030ef MH |
403 | bh_lock_sock_nested(sk); |
404 | if (hci_pi(sk)->hdev == hdev) { | |
405 | hci_pi(sk)->hdev = NULL; | |
406 | sk->sk_err = EPIPE; | |
407 | sk->sk_state = BT_OPEN; | |
408 | sk->sk_state_change(sk); | |
409 | ||
410 | hci_dev_put(hdev); | |
411 | } | |
412 | bh_unlock_sock(sk); | |
413 | } | |
414 | read_unlock(&hci_sk_list.lock); | |
415 | } | |
416 | } | |
417 | ||
801c1e8d JH |
418 | static struct hci_mgmt_chan *__hci_mgmt_chan_find(unsigned short channel) |
419 | { | |
420 | struct hci_mgmt_chan *c; | |
421 | ||
422 | list_for_each_entry(c, &mgmt_chan_list, list) { | |
423 | if (c->channel == channel) | |
424 | return c; | |
425 | } | |
426 | ||
427 | return NULL; | |
428 | } | |
429 | ||
430 | static struct hci_mgmt_chan *hci_mgmt_chan_find(unsigned short channel) | |
431 | { | |
432 | struct hci_mgmt_chan *c; | |
433 | ||
434 | mutex_lock(&mgmt_chan_list_lock); | |
435 | c = __hci_mgmt_chan_find(channel); | |
436 | mutex_unlock(&mgmt_chan_list_lock); | |
437 | ||
438 | return c; | |
439 | } | |
440 | ||
441 | int hci_mgmt_chan_register(struct hci_mgmt_chan *c) | |
442 | { | |
443 | if (c->channel < HCI_CHANNEL_CONTROL) | |
444 | return -EINVAL; | |
445 | ||
446 | mutex_lock(&mgmt_chan_list_lock); | |
447 | if (__hci_mgmt_chan_find(c->channel)) { | |
448 | mutex_unlock(&mgmt_chan_list_lock); | |
449 | return -EALREADY; | |
450 | } | |
451 | ||
452 | list_add_tail(&c->list, &mgmt_chan_list); | |
453 | ||
454 | mutex_unlock(&mgmt_chan_list_lock); | |
455 | ||
456 | return 0; | |
457 | } | |
458 | EXPORT_SYMBOL(hci_mgmt_chan_register); | |
459 | ||
460 | void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c) | |
461 | { | |
462 | mutex_lock(&mgmt_chan_list_lock); | |
463 | list_del(&c->list); | |
464 | mutex_unlock(&mgmt_chan_list_lock); | |
465 | } | |
466 | EXPORT_SYMBOL(hci_mgmt_chan_unregister); | |
467 | ||
1da177e4 LT |
468 | static int hci_sock_release(struct socket *sock) |
469 | { | |
470 | struct sock *sk = sock->sk; | |
7b005bd3 | 471 | struct hci_dev *hdev; |
1da177e4 LT |
472 | |
473 | BT_DBG("sock %p sk %p", sock, sk); | |
474 | ||
475 | if (!sk) | |
476 | return 0; | |
477 | ||
7b005bd3 MH |
478 | hdev = hci_pi(sk)->hdev; |
479 | ||
cd82e61c MH |
480 | if (hci_pi(sk)->channel == HCI_CHANNEL_MONITOR) |
481 | atomic_dec(&monitor_promisc); | |
482 | ||
1da177e4 LT |
483 | bt_sock_unlink(&hci_sk_list, sk); |
484 | ||
485 | if (hdev) { | |
23500189 | 486 | if (hci_pi(sk)->channel == HCI_CHANNEL_USER) { |
0602a8ad | 487 | mgmt_index_added(hdev); |
a358dc11 | 488 | hci_dev_clear_flag(hdev, HCI_USER_CHANNEL); |
23500189 MH |
489 | hci_dev_close(hdev->id); |
490 | } | |
491 | ||
1da177e4 LT |
492 | atomic_dec(&hdev->promisc); |
493 | hci_dev_put(hdev); | |
494 | } | |
495 | ||
496 | sock_orphan(sk); | |
497 | ||
498 | skb_queue_purge(&sk->sk_receive_queue); | |
499 | skb_queue_purge(&sk->sk_write_queue); | |
500 | ||
501 | sock_put(sk); | |
502 | return 0; | |
503 | } | |
504 | ||
b2a66aad | 505 | static int hci_sock_blacklist_add(struct hci_dev *hdev, void __user *arg) |
f0358568 JH |
506 | { |
507 | bdaddr_t bdaddr; | |
5e762444 | 508 | int err; |
f0358568 JH |
509 | |
510 | if (copy_from_user(&bdaddr, arg, sizeof(bdaddr))) | |
511 | return -EFAULT; | |
512 | ||
09fd0de5 | 513 | hci_dev_lock(hdev); |
5e762444 | 514 | |
dcc36c16 | 515 | err = hci_bdaddr_list_add(&hdev->blacklist, &bdaddr, BDADDR_BREDR); |
5e762444 | 516 | |
09fd0de5 | 517 | hci_dev_unlock(hdev); |
5e762444 AJ |
518 | |
519 | return err; | |
f0358568 JH |
520 | } |
521 | ||
b2a66aad | 522 | static int hci_sock_blacklist_del(struct hci_dev *hdev, void __user *arg) |
f0358568 JH |
523 | { |
524 | bdaddr_t bdaddr; | |
5e762444 | 525 | int err; |
f0358568 JH |
526 | |
527 | if (copy_from_user(&bdaddr, arg, sizeof(bdaddr))) | |
528 | return -EFAULT; | |
529 | ||
09fd0de5 | 530 | hci_dev_lock(hdev); |
5e762444 | 531 | |
dcc36c16 | 532 | err = hci_bdaddr_list_del(&hdev->blacklist, &bdaddr, BDADDR_BREDR); |
5e762444 | 533 | |
09fd0de5 | 534 | hci_dev_unlock(hdev); |
5e762444 AJ |
535 | |
536 | return err; | |
f0358568 JH |
537 | } |
538 | ||
8e87d142 | 539 | /* Ioctls that require bound socket */ |
6039aa73 GP |
540 | static int hci_sock_bound_ioctl(struct sock *sk, unsigned int cmd, |
541 | unsigned long arg) | |
1da177e4 LT |
542 | { |
543 | struct hci_dev *hdev = hci_pi(sk)->hdev; | |
544 | ||
545 | if (!hdev) | |
546 | return -EBADFD; | |
547 | ||
d7a5a11d | 548 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) |
0736cfa8 MH |
549 | return -EBUSY; |
550 | ||
d7a5a11d | 551 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
fee746b0 MH |
552 | return -EOPNOTSUPP; |
553 | ||
5b69bef5 MH |
554 | if (hdev->dev_type != HCI_BREDR) |
555 | return -EOPNOTSUPP; | |
556 | ||
1da177e4 LT |
557 | switch (cmd) { |
558 | case HCISETRAW: | |
559 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 560 | return -EPERM; |
db596681 | 561 | return -EOPNOTSUPP; |
1da177e4 | 562 | |
1da177e4 | 563 | case HCIGETCONNINFO: |
40be492f MH |
564 | return hci_get_conn_info(hdev, (void __user *) arg); |
565 | ||
566 | case HCIGETAUTHINFO: | |
567 | return hci_get_auth_info(hdev, (void __user *) arg); | |
1da177e4 | 568 | |
f0358568 JH |
569 | case HCIBLOCKADDR: |
570 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 571 | return -EPERM; |
b2a66aad | 572 | return hci_sock_blacklist_add(hdev, (void __user *) arg); |
f0358568 JH |
573 | |
574 | case HCIUNBLOCKADDR: | |
575 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 576 | return -EPERM; |
b2a66aad | 577 | return hci_sock_blacklist_del(hdev, (void __user *) arg); |
1da177e4 | 578 | } |
0736cfa8 | 579 | |
324d36ed | 580 | return -ENOIOCTLCMD; |
1da177e4 LT |
581 | } |
582 | ||
8fc9ced3 GP |
583 | static int hci_sock_ioctl(struct socket *sock, unsigned int cmd, |
584 | unsigned long arg) | |
1da177e4 | 585 | { |
40be492f | 586 | void __user *argp = (void __user *) arg; |
0736cfa8 | 587 | struct sock *sk = sock->sk; |
1da177e4 LT |
588 | int err; |
589 | ||
590 | BT_DBG("cmd %x arg %lx", cmd, arg); | |
591 | ||
c1c4f956 MH |
592 | lock_sock(sk); |
593 | ||
594 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) { | |
595 | err = -EBADFD; | |
596 | goto done; | |
597 | } | |
598 | ||
599 | release_sock(sk); | |
600 | ||
1da177e4 LT |
601 | switch (cmd) { |
602 | case HCIGETDEVLIST: | |
603 | return hci_get_dev_list(argp); | |
604 | ||
605 | case HCIGETDEVINFO: | |
606 | return hci_get_dev_info(argp); | |
607 | ||
608 | case HCIGETCONNLIST: | |
609 | return hci_get_conn_list(argp); | |
610 | ||
611 | case HCIDEVUP: | |
612 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 613 | return -EPERM; |
1da177e4 LT |
614 | return hci_dev_open(arg); |
615 | ||
616 | case HCIDEVDOWN: | |
617 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 618 | return -EPERM; |
1da177e4 LT |
619 | return hci_dev_close(arg); |
620 | ||
621 | case HCIDEVRESET: | |
622 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 623 | return -EPERM; |
1da177e4 LT |
624 | return hci_dev_reset(arg); |
625 | ||
626 | case HCIDEVRESTAT: | |
627 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 628 | return -EPERM; |
1da177e4 LT |
629 | return hci_dev_reset_stat(arg); |
630 | ||
631 | case HCISETSCAN: | |
632 | case HCISETAUTH: | |
633 | case HCISETENCRYPT: | |
634 | case HCISETPTYPE: | |
635 | case HCISETLINKPOL: | |
636 | case HCISETLINKMODE: | |
637 | case HCISETACLMTU: | |
638 | case HCISETSCOMTU: | |
639 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 640 | return -EPERM; |
1da177e4 LT |
641 | return hci_dev_cmd(cmd, argp); |
642 | ||
643 | case HCIINQUIRY: | |
644 | return hci_inquiry(argp); | |
1da177e4 | 645 | } |
c1c4f956 MH |
646 | |
647 | lock_sock(sk); | |
648 | ||
649 | err = hci_sock_bound_ioctl(sk, cmd, arg); | |
650 | ||
651 | done: | |
652 | release_sock(sk); | |
653 | return err; | |
1da177e4 LT |
654 | } |
655 | ||
8fc9ced3 GP |
656 | static int hci_sock_bind(struct socket *sock, struct sockaddr *addr, |
657 | int addr_len) | |
1da177e4 | 658 | { |
0381101f | 659 | struct sockaddr_hci haddr; |
1da177e4 LT |
660 | struct sock *sk = sock->sk; |
661 | struct hci_dev *hdev = NULL; | |
0381101f | 662 | int len, err = 0; |
1da177e4 LT |
663 | |
664 | BT_DBG("sock %p sk %p", sock, sk); | |
665 | ||
0381101f JH |
666 | if (!addr) |
667 | return -EINVAL; | |
668 | ||
669 | memset(&haddr, 0, sizeof(haddr)); | |
670 | len = min_t(unsigned int, sizeof(haddr), addr_len); | |
671 | memcpy(&haddr, addr, len); | |
672 | ||
673 | if (haddr.hci_family != AF_BLUETOOTH) | |
674 | return -EINVAL; | |
675 | ||
1da177e4 LT |
676 | lock_sock(sk); |
677 | ||
7cc2ade2 | 678 | if (sk->sk_state == BT_BOUND) { |
1da177e4 LT |
679 | err = -EALREADY; |
680 | goto done; | |
681 | } | |
682 | ||
7cc2ade2 MH |
683 | switch (haddr.hci_channel) { |
684 | case HCI_CHANNEL_RAW: | |
685 | if (hci_pi(sk)->hdev) { | |
686 | err = -EALREADY; | |
1da177e4 LT |
687 | goto done; |
688 | } | |
689 | ||
7cc2ade2 MH |
690 | if (haddr.hci_dev != HCI_DEV_NONE) { |
691 | hdev = hci_dev_get(haddr.hci_dev); | |
692 | if (!hdev) { | |
693 | err = -ENODEV; | |
694 | goto done; | |
695 | } | |
696 | ||
697 | atomic_inc(&hdev->promisc); | |
698 | } | |
699 | ||
700 | hci_pi(sk)->hdev = hdev; | |
701 | break; | |
702 | ||
23500189 MH |
703 | case HCI_CHANNEL_USER: |
704 | if (hci_pi(sk)->hdev) { | |
705 | err = -EALREADY; | |
706 | goto done; | |
707 | } | |
708 | ||
709 | if (haddr.hci_dev == HCI_DEV_NONE) { | |
710 | err = -EINVAL; | |
711 | goto done; | |
712 | } | |
713 | ||
10a8b86f | 714 | if (!capable(CAP_NET_ADMIN)) { |
23500189 MH |
715 | err = -EPERM; |
716 | goto done; | |
717 | } | |
718 | ||
719 | hdev = hci_dev_get(haddr.hci_dev); | |
720 | if (!hdev) { | |
721 | err = -ENODEV; | |
722 | goto done; | |
723 | } | |
724 | ||
725 | if (test_bit(HCI_UP, &hdev->flags) || | |
726 | test_bit(HCI_INIT, &hdev->flags) || | |
d7a5a11d MH |
727 | hci_dev_test_flag(hdev, HCI_SETUP) || |
728 | hci_dev_test_flag(hdev, HCI_CONFIG)) { | |
23500189 MH |
729 | err = -EBUSY; |
730 | hci_dev_put(hdev); | |
731 | goto done; | |
732 | } | |
733 | ||
238be788 | 734 | if (hci_dev_test_and_set_flag(hdev, HCI_USER_CHANNEL)) { |
23500189 MH |
735 | err = -EUSERS; |
736 | hci_dev_put(hdev); | |
737 | goto done; | |
738 | } | |
739 | ||
0602a8ad | 740 | mgmt_index_removed(hdev); |
23500189 MH |
741 | |
742 | err = hci_dev_open(hdev->id); | |
743 | if (err) { | |
a358dc11 | 744 | hci_dev_clear_flag(hdev, HCI_USER_CHANNEL); |
0602a8ad | 745 | mgmt_index_added(hdev); |
23500189 MH |
746 | hci_dev_put(hdev); |
747 | goto done; | |
748 | } | |
749 | ||
750 | atomic_inc(&hdev->promisc); | |
751 | ||
752 | hci_pi(sk)->hdev = hdev; | |
753 | break; | |
754 | ||
cd82e61c MH |
755 | case HCI_CHANNEL_MONITOR: |
756 | if (haddr.hci_dev != HCI_DEV_NONE) { | |
757 | err = -EINVAL; | |
758 | goto done; | |
759 | } | |
760 | ||
761 | if (!capable(CAP_NET_RAW)) { | |
762 | err = -EPERM; | |
763 | goto done; | |
764 | } | |
765 | ||
766 | send_monitor_replay(sk); | |
767 | ||
768 | atomic_inc(&monitor_promisc); | |
769 | break; | |
770 | ||
7cc2ade2 | 771 | default: |
801c1e8d JH |
772 | if (!hci_mgmt_chan_find(haddr.hci_channel)) { |
773 | err = -EINVAL; | |
774 | goto done; | |
775 | } | |
776 | ||
777 | if (haddr.hci_dev != HCI_DEV_NONE) { | |
778 | err = -EINVAL; | |
779 | goto done; | |
780 | } | |
781 | ||
782 | if (!capable(CAP_NET_ADMIN)) { | |
783 | err = -EPERM; | |
784 | goto done; | |
785 | } | |
786 | ||
787 | break; | |
1da177e4 LT |
788 | } |
789 | ||
7cc2ade2 | 790 | |
0381101f | 791 | hci_pi(sk)->channel = haddr.hci_channel; |
1da177e4 LT |
792 | sk->sk_state = BT_BOUND; |
793 | ||
794 | done: | |
795 | release_sock(sk); | |
796 | return err; | |
797 | } | |
798 | ||
8fc9ced3 GP |
799 | static int hci_sock_getname(struct socket *sock, struct sockaddr *addr, |
800 | int *addr_len, int peer) | |
1da177e4 LT |
801 | { |
802 | struct sockaddr_hci *haddr = (struct sockaddr_hci *) addr; | |
803 | struct sock *sk = sock->sk; | |
9d4b68b2 MH |
804 | struct hci_dev *hdev; |
805 | int err = 0; | |
1da177e4 LT |
806 | |
807 | BT_DBG("sock %p sk %p", sock, sk); | |
808 | ||
06f43cbc MH |
809 | if (peer) |
810 | return -EOPNOTSUPP; | |
811 | ||
1da177e4 LT |
812 | lock_sock(sk); |
813 | ||
9d4b68b2 MH |
814 | hdev = hci_pi(sk)->hdev; |
815 | if (!hdev) { | |
816 | err = -EBADFD; | |
817 | goto done; | |
818 | } | |
819 | ||
1da177e4 LT |
820 | *addr_len = sizeof(*haddr); |
821 | haddr->hci_family = AF_BLUETOOTH; | |
7b005bd3 | 822 | haddr->hci_dev = hdev->id; |
9d4b68b2 | 823 | haddr->hci_channel= hci_pi(sk)->channel; |
1da177e4 | 824 | |
9d4b68b2 | 825 | done: |
1da177e4 | 826 | release_sock(sk); |
9d4b68b2 | 827 | return err; |
1da177e4 LT |
828 | } |
829 | ||
6039aa73 GP |
830 | static void hci_sock_cmsg(struct sock *sk, struct msghdr *msg, |
831 | struct sk_buff *skb) | |
1da177e4 LT |
832 | { |
833 | __u32 mask = hci_pi(sk)->cmsg_mask; | |
834 | ||
0d48d939 MH |
835 | if (mask & HCI_CMSG_DIR) { |
836 | int incoming = bt_cb(skb)->incoming; | |
8fc9ced3 GP |
837 | put_cmsg(msg, SOL_HCI, HCI_CMSG_DIR, sizeof(incoming), |
838 | &incoming); | |
0d48d939 | 839 | } |
1da177e4 | 840 | |
a61bbcf2 | 841 | if (mask & HCI_CMSG_TSTAMP) { |
f6e623a6 JFS |
842 | #ifdef CONFIG_COMPAT |
843 | struct compat_timeval ctv; | |
844 | #endif | |
a61bbcf2 | 845 | struct timeval tv; |
767c5eb5 MH |
846 | void *data; |
847 | int len; | |
a61bbcf2 PM |
848 | |
849 | skb_get_timestamp(skb, &tv); | |
767c5eb5 | 850 | |
1da97f83 DM |
851 | data = &tv; |
852 | len = sizeof(tv); | |
853 | #ifdef CONFIG_COMPAT | |
da88cea1 L |
854 | if (!COMPAT_USE_64BIT_TIME && |
855 | (msg->msg_flags & MSG_CMSG_COMPAT)) { | |
767c5eb5 MH |
856 | ctv.tv_sec = tv.tv_sec; |
857 | ctv.tv_usec = tv.tv_usec; | |
858 | data = &ctv; | |
859 | len = sizeof(ctv); | |
767c5eb5 | 860 | } |
1da97f83 | 861 | #endif |
767c5eb5 MH |
862 | |
863 | put_cmsg(msg, SOL_HCI, HCI_CMSG_TSTAMP, len, data); | |
a61bbcf2 | 864 | } |
1da177e4 | 865 | } |
8e87d142 | 866 | |
1b784140 YX |
867 | static int hci_sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t len, |
868 | int flags) | |
1da177e4 LT |
869 | { |
870 | int noblock = flags & MSG_DONTWAIT; | |
871 | struct sock *sk = sock->sk; | |
872 | struct sk_buff *skb; | |
873 | int copied, err; | |
874 | ||
875 | BT_DBG("sock %p, sk %p", sock, sk); | |
876 | ||
877 | if (flags & (MSG_OOB)) | |
878 | return -EOPNOTSUPP; | |
879 | ||
880 | if (sk->sk_state == BT_CLOSED) | |
881 | return 0; | |
882 | ||
70f23020 AE |
883 | skb = skb_recv_datagram(sk, flags, noblock, &err); |
884 | if (!skb) | |
1da177e4 LT |
885 | return err; |
886 | ||
1da177e4 LT |
887 | copied = skb->len; |
888 | if (len < copied) { | |
889 | msg->msg_flags |= MSG_TRUNC; | |
890 | copied = len; | |
891 | } | |
892 | ||
badff6d0 | 893 | skb_reset_transport_header(skb); |
51f3d02b | 894 | err = skb_copy_datagram_msg(skb, 0, msg, copied); |
1da177e4 | 895 | |
3a208627 MH |
896 | switch (hci_pi(sk)->channel) { |
897 | case HCI_CHANNEL_RAW: | |
898 | hci_sock_cmsg(sk, msg, skb); | |
899 | break; | |
23500189 | 900 | case HCI_CHANNEL_USER: |
cd82e61c MH |
901 | case HCI_CHANNEL_MONITOR: |
902 | sock_recv_timestamp(msg, sk, skb); | |
903 | break; | |
801c1e8d JH |
904 | default: |
905 | if (hci_mgmt_chan_find(hci_pi(sk)->channel)) | |
906 | sock_recv_timestamp(msg, sk, skb); | |
907 | break; | |
3a208627 | 908 | } |
1da177e4 LT |
909 | |
910 | skb_free_datagram(sk, skb); | |
911 | ||
912 | return err ? : copied; | |
913 | } | |
914 | ||
1b784140 YX |
915 | static int hci_sock_sendmsg(struct socket *sock, struct msghdr *msg, |
916 | size_t len) | |
1da177e4 LT |
917 | { |
918 | struct sock *sk = sock->sk; | |
801c1e8d | 919 | struct hci_mgmt_chan *chan; |
1da177e4 LT |
920 | struct hci_dev *hdev; |
921 | struct sk_buff *skb; | |
922 | int err; | |
923 | ||
924 | BT_DBG("sock %p sk %p", sock, sk); | |
925 | ||
926 | if (msg->msg_flags & MSG_OOB) | |
927 | return -EOPNOTSUPP; | |
928 | ||
929 | if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_NOSIGNAL|MSG_ERRQUEUE)) | |
930 | return -EINVAL; | |
931 | ||
932 | if (len < 4 || len > HCI_MAX_FRAME_SIZE) | |
933 | return -EINVAL; | |
934 | ||
935 | lock_sock(sk); | |
936 | ||
0381101f JH |
937 | switch (hci_pi(sk)->channel) { |
938 | case HCI_CHANNEL_RAW: | |
23500189 | 939 | case HCI_CHANNEL_USER: |
0381101f | 940 | break; |
cd82e61c MH |
941 | case HCI_CHANNEL_MONITOR: |
942 | err = -EOPNOTSUPP; | |
943 | goto done; | |
0381101f | 944 | default: |
801c1e8d JH |
945 | mutex_lock(&mgmt_chan_list_lock); |
946 | chan = __hci_mgmt_chan_find(hci_pi(sk)->channel); | |
947 | if (chan) | |
6d785aa3 | 948 | err = mgmt_control(chan, sk, msg, len); |
801c1e8d JH |
949 | else |
950 | err = -EINVAL; | |
951 | ||
952 | mutex_unlock(&mgmt_chan_list_lock); | |
0381101f JH |
953 | goto done; |
954 | } | |
955 | ||
70f23020 AE |
956 | hdev = hci_pi(sk)->hdev; |
957 | if (!hdev) { | |
1da177e4 LT |
958 | err = -EBADFD; |
959 | goto done; | |
960 | } | |
961 | ||
7e21addc MH |
962 | if (!test_bit(HCI_UP, &hdev->flags)) { |
963 | err = -ENETDOWN; | |
964 | goto done; | |
965 | } | |
966 | ||
70f23020 AE |
967 | skb = bt_skb_send_alloc(sk, len, msg->msg_flags & MSG_DONTWAIT, &err); |
968 | if (!skb) | |
1da177e4 LT |
969 | goto done; |
970 | ||
6ce8e9ce | 971 | if (memcpy_from_msg(skb_put(skb, len), msg, len)) { |
1da177e4 LT |
972 | err = -EFAULT; |
973 | goto drop; | |
974 | } | |
975 | ||
0d48d939 | 976 | bt_cb(skb)->pkt_type = *((unsigned char *) skb->data); |
1da177e4 | 977 | skb_pull(skb, 1); |
1da177e4 | 978 | |
1bc5ad16 MH |
979 | if (hci_pi(sk)->channel == HCI_CHANNEL_USER) { |
980 | /* No permission check is needed for user channel | |
981 | * since that gets enforced when binding the socket. | |
982 | * | |
983 | * However check that the packet type is valid. | |
984 | */ | |
985 | if (bt_cb(skb)->pkt_type != HCI_COMMAND_PKT && | |
986 | bt_cb(skb)->pkt_type != HCI_ACLDATA_PKT && | |
987 | bt_cb(skb)->pkt_type != HCI_SCODATA_PKT) { | |
988 | err = -EINVAL; | |
989 | goto drop; | |
990 | } | |
991 | ||
992 | skb_queue_tail(&hdev->raw_q, skb); | |
993 | queue_work(hdev->workqueue, &hdev->tx_work); | |
994 | } else if (bt_cb(skb)->pkt_type == HCI_COMMAND_PKT) { | |
83985319 | 995 | u16 opcode = get_unaligned_le16(skb->data); |
1da177e4 LT |
996 | u16 ogf = hci_opcode_ogf(opcode); |
997 | u16 ocf = hci_opcode_ocf(opcode); | |
998 | ||
999 | if (((ogf > HCI_SFLT_MAX_OGF) || | |
3bb3c755 GP |
1000 | !hci_test_bit(ocf & HCI_FLT_OCF_BITS, |
1001 | &hci_sec_filter.ocf_mask[ogf])) && | |
1002 | !capable(CAP_NET_RAW)) { | |
1da177e4 LT |
1003 | err = -EPERM; |
1004 | goto drop; | |
1005 | } | |
1006 | ||
fee746b0 | 1007 | if (ogf == 0x3f) { |
1da177e4 | 1008 | skb_queue_tail(&hdev->raw_q, skb); |
3eff45ea | 1009 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 1010 | } else { |
49c922bb | 1011 | /* Stand-alone HCI commands must be flagged as |
11714b3d JH |
1012 | * single-command requests. |
1013 | */ | |
6368c235 | 1014 | bt_cb(skb)->req_start = 1; |
11714b3d | 1015 | |
1da177e4 | 1016 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 1017 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
1018 | } |
1019 | } else { | |
1020 | if (!capable(CAP_NET_RAW)) { | |
1021 | err = -EPERM; | |
1022 | goto drop; | |
1023 | } | |
1024 | ||
1025 | skb_queue_tail(&hdev->raw_q, skb); | |
3eff45ea | 1026 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 LT |
1027 | } |
1028 | ||
1029 | err = len; | |
1030 | ||
1031 | done: | |
1032 | release_sock(sk); | |
1033 | return err; | |
1034 | ||
1035 | drop: | |
1036 | kfree_skb(skb); | |
1037 | goto done; | |
1038 | } | |
1039 | ||
8fc9ced3 GP |
1040 | static int hci_sock_setsockopt(struct socket *sock, int level, int optname, |
1041 | char __user *optval, unsigned int len) | |
1da177e4 LT |
1042 | { |
1043 | struct hci_ufilter uf = { .opcode = 0 }; | |
1044 | struct sock *sk = sock->sk; | |
1045 | int err = 0, opt = 0; | |
1046 | ||
1047 | BT_DBG("sk %p, opt %d", sk, optname); | |
1048 | ||
1049 | lock_sock(sk); | |
1050 | ||
2f39cdb7 | 1051 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) { |
c2371e80 | 1052 | err = -EBADFD; |
2f39cdb7 MH |
1053 | goto done; |
1054 | } | |
1055 | ||
1da177e4 LT |
1056 | switch (optname) { |
1057 | case HCI_DATA_DIR: | |
1058 | if (get_user(opt, (int __user *)optval)) { | |
1059 | err = -EFAULT; | |
1060 | break; | |
1061 | } | |
1062 | ||
1063 | if (opt) | |
1064 | hci_pi(sk)->cmsg_mask |= HCI_CMSG_DIR; | |
1065 | else | |
1066 | hci_pi(sk)->cmsg_mask &= ~HCI_CMSG_DIR; | |
1067 | break; | |
1068 | ||
1069 | case HCI_TIME_STAMP: | |
1070 | if (get_user(opt, (int __user *)optval)) { | |
1071 | err = -EFAULT; | |
1072 | break; | |
1073 | } | |
1074 | ||
1075 | if (opt) | |
1076 | hci_pi(sk)->cmsg_mask |= HCI_CMSG_TSTAMP; | |
1077 | else | |
1078 | hci_pi(sk)->cmsg_mask &= ~HCI_CMSG_TSTAMP; | |
1079 | break; | |
1080 | ||
1081 | case HCI_FILTER: | |
0878b666 MH |
1082 | { |
1083 | struct hci_filter *f = &hci_pi(sk)->filter; | |
1084 | ||
1085 | uf.type_mask = f->type_mask; | |
1086 | uf.opcode = f->opcode; | |
1087 | uf.event_mask[0] = *((u32 *) f->event_mask + 0); | |
1088 | uf.event_mask[1] = *((u32 *) f->event_mask + 1); | |
1089 | } | |
1090 | ||
1da177e4 LT |
1091 | len = min_t(unsigned int, len, sizeof(uf)); |
1092 | if (copy_from_user(&uf, optval, len)) { | |
1093 | err = -EFAULT; | |
1094 | break; | |
1095 | } | |
1096 | ||
1097 | if (!capable(CAP_NET_RAW)) { | |
1098 | uf.type_mask &= hci_sec_filter.type_mask; | |
1099 | uf.event_mask[0] &= *((u32 *) hci_sec_filter.event_mask + 0); | |
1100 | uf.event_mask[1] &= *((u32 *) hci_sec_filter.event_mask + 1); | |
1101 | } | |
1102 | ||
1103 | { | |
1104 | struct hci_filter *f = &hci_pi(sk)->filter; | |
1105 | ||
1106 | f->type_mask = uf.type_mask; | |
1107 | f->opcode = uf.opcode; | |
1108 | *((u32 *) f->event_mask + 0) = uf.event_mask[0]; | |
1109 | *((u32 *) f->event_mask + 1) = uf.event_mask[1]; | |
1110 | } | |
8e87d142 | 1111 | break; |
1da177e4 LT |
1112 | |
1113 | default: | |
1114 | err = -ENOPROTOOPT; | |
1115 | break; | |
1116 | } | |
1117 | ||
2f39cdb7 | 1118 | done: |
1da177e4 LT |
1119 | release_sock(sk); |
1120 | return err; | |
1121 | } | |
1122 | ||
8fc9ced3 GP |
1123 | static int hci_sock_getsockopt(struct socket *sock, int level, int optname, |
1124 | char __user *optval, int __user *optlen) | |
1da177e4 LT |
1125 | { |
1126 | struct hci_ufilter uf; | |
1127 | struct sock *sk = sock->sk; | |
cedc5469 MH |
1128 | int len, opt, err = 0; |
1129 | ||
1130 | BT_DBG("sk %p, opt %d", sk, optname); | |
1da177e4 LT |
1131 | |
1132 | if (get_user(len, optlen)) | |
1133 | return -EFAULT; | |
1134 | ||
cedc5469 MH |
1135 | lock_sock(sk); |
1136 | ||
1137 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) { | |
c2371e80 | 1138 | err = -EBADFD; |
cedc5469 MH |
1139 | goto done; |
1140 | } | |
1141 | ||
1da177e4 LT |
1142 | switch (optname) { |
1143 | case HCI_DATA_DIR: | |
1144 | if (hci_pi(sk)->cmsg_mask & HCI_CMSG_DIR) | |
1145 | opt = 1; | |
8e87d142 | 1146 | else |
1da177e4 LT |
1147 | opt = 0; |
1148 | ||
1149 | if (put_user(opt, optval)) | |
cedc5469 | 1150 | err = -EFAULT; |
1da177e4 LT |
1151 | break; |
1152 | ||
1153 | case HCI_TIME_STAMP: | |
1154 | if (hci_pi(sk)->cmsg_mask & HCI_CMSG_TSTAMP) | |
1155 | opt = 1; | |
8e87d142 | 1156 | else |
1da177e4 LT |
1157 | opt = 0; |
1158 | ||
1159 | if (put_user(opt, optval)) | |
cedc5469 | 1160 | err = -EFAULT; |
1da177e4 LT |
1161 | break; |
1162 | ||
1163 | case HCI_FILTER: | |
1164 | { | |
1165 | struct hci_filter *f = &hci_pi(sk)->filter; | |
1166 | ||
e15ca9a0 | 1167 | memset(&uf, 0, sizeof(uf)); |
1da177e4 LT |
1168 | uf.type_mask = f->type_mask; |
1169 | uf.opcode = f->opcode; | |
1170 | uf.event_mask[0] = *((u32 *) f->event_mask + 0); | |
1171 | uf.event_mask[1] = *((u32 *) f->event_mask + 1); | |
1172 | } | |
1173 | ||
1174 | len = min_t(unsigned int, len, sizeof(uf)); | |
1175 | if (copy_to_user(optval, &uf, len)) | |
cedc5469 | 1176 | err = -EFAULT; |
1da177e4 LT |
1177 | break; |
1178 | ||
1179 | default: | |
cedc5469 | 1180 | err = -ENOPROTOOPT; |
1da177e4 LT |
1181 | break; |
1182 | } | |
1183 | ||
cedc5469 MH |
1184 | done: |
1185 | release_sock(sk); | |
1186 | return err; | |
1da177e4 LT |
1187 | } |
1188 | ||
90ddc4f0 | 1189 | static const struct proto_ops hci_sock_ops = { |
1da177e4 LT |
1190 | .family = PF_BLUETOOTH, |
1191 | .owner = THIS_MODULE, | |
1192 | .release = hci_sock_release, | |
1193 | .bind = hci_sock_bind, | |
1194 | .getname = hci_sock_getname, | |
1195 | .sendmsg = hci_sock_sendmsg, | |
1196 | .recvmsg = hci_sock_recvmsg, | |
1197 | .ioctl = hci_sock_ioctl, | |
1198 | .poll = datagram_poll, | |
1199 | .listen = sock_no_listen, | |
1200 | .shutdown = sock_no_shutdown, | |
1201 | .setsockopt = hci_sock_setsockopt, | |
1202 | .getsockopt = hci_sock_getsockopt, | |
1203 | .connect = sock_no_connect, | |
1204 | .socketpair = sock_no_socketpair, | |
1205 | .accept = sock_no_accept, | |
1206 | .mmap = sock_no_mmap | |
1207 | }; | |
1208 | ||
1209 | static struct proto hci_sk_proto = { | |
1210 | .name = "HCI", | |
1211 | .owner = THIS_MODULE, | |
1212 | .obj_size = sizeof(struct hci_pinfo) | |
1213 | }; | |
1214 | ||
3f378b68 EP |
1215 | static int hci_sock_create(struct net *net, struct socket *sock, int protocol, |
1216 | int kern) | |
1da177e4 LT |
1217 | { |
1218 | struct sock *sk; | |
1219 | ||
1220 | BT_DBG("sock %p", sock); | |
1221 | ||
1222 | if (sock->type != SOCK_RAW) | |
1223 | return -ESOCKTNOSUPPORT; | |
1224 | ||
1225 | sock->ops = &hci_sock_ops; | |
1226 | ||
6257ff21 | 1227 | sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &hci_sk_proto); |
1da177e4 LT |
1228 | if (!sk) |
1229 | return -ENOMEM; | |
1230 | ||
1231 | sock_init_data(sock, sk); | |
1232 | ||
1233 | sock_reset_flag(sk, SOCK_ZAPPED); | |
1234 | ||
1235 | sk->sk_protocol = protocol; | |
1236 | ||
1237 | sock->state = SS_UNCONNECTED; | |
1238 | sk->sk_state = BT_OPEN; | |
1239 | ||
1240 | bt_sock_link(&hci_sk_list, sk); | |
1241 | return 0; | |
1242 | } | |
1243 | ||
ec1b4cf7 | 1244 | static const struct net_proto_family hci_sock_family_ops = { |
1da177e4 LT |
1245 | .family = PF_BLUETOOTH, |
1246 | .owner = THIS_MODULE, | |
1247 | .create = hci_sock_create, | |
1248 | }; | |
1249 | ||
1da177e4 LT |
1250 | int __init hci_sock_init(void) |
1251 | { | |
1252 | int err; | |
1253 | ||
b0a8e282 MH |
1254 | BUILD_BUG_ON(sizeof(struct sockaddr_hci) > sizeof(struct sockaddr)); |
1255 | ||
1da177e4 LT |
1256 | err = proto_register(&hci_sk_proto, 0); |
1257 | if (err < 0) | |
1258 | return err; | |
1259 | ||
1260 | err = bt_sock_register(BTPROTO_HCI, &hci_sock_family_ops); | |
f7c86637 MY |
1261 | if (err < 0) { |
1262 | BT_ERR("HCI socket registration failed"); | |
1da177e4 | 1263 | goto error; |
f7c86637 MY |
1264 | } |
1265 | ||
b0316615 | 1266 | err = bt_procfs_init(&init_net, "hci", &hci_sk_list, NULL); |
f7c86637 MY |
1267 | if (err < 0) { |
1268 | BT_ERR("Failed to create HCI proc file"); | |
1269 | bt_sock_unregister(BTPROTO_HCI); | |
1270 | goto error; | |
1271 | } | |
1da177e4 | 1272 | |
1da177e4 LT |
1273 | BT_INFO("HCI socket layer initialized"); |
1274 | ||
1275 | return 0; | |
1276 | ||
1277 | error: | |
1da177e4 LT |
1278 | proto_unregister(&hci_sk_proto); |
1279 | return err; | |
1280 | } | |
1281 | ||
b7440a14 | 1282 | void hci_sock_cleanup(void) |
1da177e4 | 1283 | { |
f7c86637 | 1284 | bt_procfs_cleanup(&init_net, "hci"); |
5e9d7f86 | 1285 | bt_sock_unregister(BTPROTO_HCI); |
1da177e4 | 1286 | proto_unregister(&hci_sk_proto); |
1da177e4 | 1287 | } |