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 | ||
17711c62 MH |
234 | /* Send frame to sockets with specific channel flag set */ |
235 | void hci_send_to_flagged_channel(unsigned short channel, struct sk_buff *skb, | |
236 | int flag) | |
237 | { | |
238 | struct sock *sk; | |
239 | ||
240 | BT_DBG("channel %u len %d", channel, skb->len); | |
241 | ||
242 | read_lock(&hci_sk_list.lock); | |
243 | ||
244 | sk_for_each(sk, &hci_sk_list.head) { | |
245 | struct sk_buff *nskb; | |
246 | ||
247 | if (!test_bit(flag, &hci_pi(sk)->flags)) | |
248 | continue; | |
249 | ||
250 | if (sk->sk_state != BT_BOUND) | |
251 | continue; | |
252 | ||
253 | if (hci_pi(sk)->channel != channel) | |
254 | continue; | |
255 | ||
256 | nskb = skb_clone(skb, GFP_ATOMIC); | |
257 | if (!nskb) | |
258 | continue; | |
259 | ||
260 | if (sock_queue_rcv_skb(sk, nskb)) | |
261 | kfree_skb(nskb); | |
262 | } | |
263 | ||
264 | read_unlock(&hci_sk_list.lock); | |
265 | } | |
266 | ||
cd82e61c MH |
267 | /* Send frame to monitor socket */ |
268 | void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb) | |
269 | { | |
cd82e61c | 270 | struct sk_buff *skb_copy = NULL; |
2b531294 | 271 | struct hci_mon_hdr *hdr; |
cd82e61c MH |
272 | __le16 opcode; |
273 | ||
274 | if (!atomic_read(&monitor_promisc)) | |
275 | return; | |
276 | ||
277 | BT_DBG("hdev %p len %d", hdev, skb->len); | |
278 | ||
279 | switch (bt_cb(skb)->pkt_type) { | |
280 | case HCI_COMMAND_PKT: | |
dcf4adbf | 281 | opcode = cpu_to_le16(HCI_MON_COMMAND_PKT); |
cd82e61c MH |
282 | break; |
283 | case HCI_EVENT_PKT: | |
dcf4adbf | 284 | opcode = cpu_to_le16(HCI_MON_EVENT_PKT); |
cd82e61c MH |
285 | break; |
286 | case HCI_ACLDATA_PKT: | |
287 | if (bt_cb(skb)->incoming) | |
dcf4adbf | 288 | opcode = cpu_to_le16(HCI_MON_ACL_RX_PKT); |
cd82e61c | 289 | else |
dcf4adbf | 290 | opcode = cpu_to_le16(HCI_MON_ACL_TX_PKT); |
cd82e61c MH |
291 | break; |
292 | case HCI_SCODATA_PKT: | |
293 | if (bt_cb(skb)->incoming) | |
dcf4adbf | 294 | opcode = cpu_to_le16(HCI_MON_SCO_RX_PKT); |
cd82e61c | 295 | else |
dcf4adbf | 296 | opcode = cpu_to_le16(HCI_MON_SCO_TX_PKT); |
cd82e61c MH |
297 | break; |
298 | default: | |
299 | return; | |
300 | } | |
301 | ||
2b531294 MH |
302 | /* Create a private copy with headroom */ |
303 | skb_copy = __pskb_copy_fclone(skb, HCI_MON_HDR_SIZE, GFP_ATOMIC, true); | |
304 | if (!skb_copy) | |
305 | return; | |
306 | ||
307 | /* Put header before the data */ | |
308 | hdr = (void *) skb_push(skb_copy, HCI_MON_HDR_SIZE); | |
309 | hdr->opcode = opcode; | |
310 | hdr->index = cpu_to_le16(hdev->id); | |
311 | hdr->len = cpu_to_le16(skb->len); | |
312 | ||
03f310ef | 313 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb_copy, NULL); |
cd82e61c MH |
314 | kfree_skb(skb_copy); |
315 | } | |
316 | ||
cd82e61c MH |
317 | static struct sk_buff *create_monitor_event(struct hci_dev *hdev, int event) |
318 | { | |
319 | struct hci_mon_hdr *hdr; | |
320 | struct hci_mon_new_index *ni; | |
321 | struct sk_buff *skb; | |
322 | __le16 opcode; | |
323 | ||
324 | switch (event) { | |
325 | case HCI_DEV_REG: | |
326 | skb = bt_skb_alloc(HCI_MON_NEW_INDEX_SIZE, GFP_ATOMIC); | |
327 | if (!skb) | |
328 | return NULL; | |
329 | ||
330 | ni = (void *) skb_put(skb, HCI_MON_NEW_INDEX_SIZE); | |
331 | ni->type = hdev->dev_type; | |
332 | ni->bus = hdev->bus; | |
333 | bacpy(&ni->bdaddr, &hdev->bdaddr); | |
334 | memcpy(ni->name, hdev->name, 8); | |
335 | ||
dcf4adbf | 336 | opcode = cpu_to_le16(HCI_MON_NEW_INDEX); |
cd82e61c MH |
337 | break; |
338 | ||
339 | case HCI_DEV_UNREG: | |
340 | skb = bt_skb_alloc(0, GFP_ATOMIC); | |
341 | if (!skb) | |
342 | return NULL; | |
343 | ||
dcf4adbf | 344 | opcode = cpu_to_le16(HCI_MON_DEL_INDEX); |
cd82e61c MH |
345 | break; |
346 | ||
347 | default: | |
348 | return NULL; | |
349 | } | |
350 | ||
351 | __net_timestamp(skb); | |
352 | ||
353 | hdr = (void *) skb_push(skb, HCI_MON_HDR_SIZE); | |
354 | hdr->opcode = opcode; | |
355 | hdr->index = cpu_to_le16(hdev->id); | |
356 | hdr->len = cpu_to_le16(skb->len - HCI_MON_HDR_SIZE); | |
357 | ||
358 | return skb; | |
359 | } | |
360 | ||
361 | static void send_monitor_replay(struct sock *sk) | |
362 | { | |
363 | struct hci_dev *hdev; | |
364 | ||
365 | read_lock(&hci_dev_list_lock); | |
366 | ||
367 | list_for_each_entry(hdev, &hci_dev_list, list) { | |
368 | struct sk_buff *skb; | |
369 | ||
370 | skb = create_monitor_event(hdev, HCI_DEV_REG); | |
371 | if (!skb) | |
372 | continue; | |
373 | ||
374 | if (sock_queue_rcv_skb(sk, skb)) | |
375 | kfree_skb(skb); | |
376 | } | |
377 | ||
378 | read_unlock(&hci_dev_list_lock); | |
379 | } | |
380 | ||
040030ef MH |
381 | /* Generate internal stack event */ |
382 | static void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data) | |
383 | { | |
384 | struct hci_event_hdr *hdr; | |
385 | struct hci_ev_stack_internal *ev; | |
386 | struct sk_buff *skb; | |
387 | ||
388 | skb = bt_skb_alloc(HCI_EVENT_HDR_SIZE + sizeof(*ev) + dlen, GFP_ATOMIC); | |
389 | if (!skb) | |
390 | return; | |
391 | ||
392 | hdr = (void *) skb_put(skb, HCI_EVENT_HDR_SIZE); | |
393 | hdr->evt = HCI_EV_STACK_INTERNAL; | |
394 | hdr->plen = sizeof(*ev) + dlen; | |
395 | ||
396 | ev = (void *) skb_put(skb, sizeof(*ev) + dlen); | |
397 | ev->type = type; | |
398 | memcpy(ev->data, data, dlen); | |
399 | ||
400 | bt_cb(skb)->incoming = 1; | |
401 | __net_timestamp(skb); | |
402 | ||
403 | bt_cb(skb)->pkt_type = HCI_EVENT_PKT; | |
040030ef MH |
404 | hci_send_to_sock(hdev, skb); |
405 | kfree_skb(skb); | |
406 | } | |
407 | ||
408 | void hci_sock_dev_event(struct hci_dev *hdev, int event) | |
409 | { | |
410 | struct hci_ev_si_device ev; | |
411 | ||
412 | BT_DBG("hdev %s event %d", hdev->name, event); | |
413 | ||
cd82e61c MH |
414 | /* Send event to monitor */ |
415 | if (atomic_read(&monitor_promisc)) { | |
416 | struct sk_buff *skb; | |
417 | ||
418 | skb = create_monitor_event(hdev, event); | |
419 | if (skb) { | |
03f310ef | 420 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, NULL); |
cd82e61c MH |
421 | kfree_skb(skb); |
422 | } | |
423 | } | |
424 | ||
040030ef MH |
425 | /* Send event to sockets */ |
426 | ev.event = event; | |
427 | ev.dev_id = hdev->id; | |
428 | hci_si_event(NULL, HCI_EV_SI_DEVICE, sizeof(ev), &ev); | |
429 | ||
430 | if (event == HCI_DEV_UNREG) { | |
431 | struct sock *sk; | |
040030ef MH |
432 | |
433 | /* Detach sockets from device */ | |
434 | read_lock(&hci_sk_list.lock); | |
b67bfe0d | 435 | sk_for_each(sk, &hci_sk_list.head) { |
040030ef MH |
436 | bh_lock_sock_nested(sk); |
437 | if (hci_pi(sk)->hdev == hdev) { | |
438 | hci_pi(sk)->hdev = NULL; | |
439 | sk->sk_err = EPIPE; | |
440 | sk->sk_state = BT_OPEN; | |
441 | sk->sk_state_change(sk); | |
442 | ||
443 | hci_dev_put(hdev); | |
444 | } | |
445 | bh_unlock_sock(sk); | |
446 | } | |
447 | read_unlock(&hci_sk_list.lock); | |
448 | } | |
449 | } | |
450 | ||
801c1e8d JH |
451 | static struct hci_mgmt_chan *__hci_mgmt_chan_find(unsigned short channel) |
452 | { | |
453 | struct hci_mgmt_chan *c; | |
454 | ||
455 | list_for_each_entry(c, &mgmt_chan_list, list) { | |
456 | if (c->channel == channel) | |
457 | return c; | |
458 | } | |
459 | ||
460 | return NULL; | |
461 | } | |
462 | ||
463 | static struct hci_mgmt_chan *hci_mgmt_chan_find(unsigned short channel) | |
464 | { | |
465 | struct hci_mgmt_chan *c; | |
466 | ||
467 | mutex_lock(&mgmt_chan_list_lock); | |
468 | c = __hci_mgmt_chan_find(channel); | |
469 | mutex_unlock(&mgmt_chan_list_lock); | |
470 | ||
471 | return c; | |
472 | } | |
473 | ||
474 | int hci_mgmt_chan_register(struct hci_mgmt_chan *c) | |
475 | { | |
476 | if (c->channel < HCI_CHANNEL_CONTROL) | |
477 | return -EINVAL; | |
478 | ||
479 | mutex_lock(&mgmt_chan_list_lock); | |
480 | if (__hci_mgmt_chan_find(c->channel)) { | |
481 | mutex_unlock(&mgmt_chan_list_lock); | |
482 | return -EALREADY; | |
483 | } | |
484 | ||
485 | list_add_tail(&c->list, &mgmt_chan_list); | |
486 | ||
487 | mutex_unlock(&mgmt_chan_list_lock); | |
488 | ||
489 | return 0; | |
490 | } | |
491 | EXPORT_SYMBOL(hci_mgmt_chan_register); | |
492 | ||
493 | void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c) | |
494 | { | |
495 | mutex_lock(&mgmt_chan_list_lock); | |
496 | list_del(&c->list); | |
497 | mutex_unlock(&mgmt_chan_list_lock); | |
498 | } | |
499 | EXPORT_SYMBOL(hci_mgmt_chan_unregister); | |
500 | ||
1da177e4 LT |
501 | static int hci_sock_release(struct socket *sock) |
502 | { | |
503 | struct sock *sk = sock->sk; | |
7b005bd3 | 504 | struct hci_dev *hdev; |
1da177e4 LT |
505 | |
506 | BT_DBG("sock %p sk %p", sock, sk); | |
507 | ||
508 | if (!sk) | |
509 | return 0; | |
510 | ||
7b005bd3 MH |
511 | hdev = hci_pi(sk)->hdev; |
512 | ||
cd82e61c MH |
513 | if (hci_pi(sk)->channel == HCI_CHANNEL_MONITOR) |
514 | atomic_dec(&monitor_promisc); | |
515 | ||
1da177e4 LT |
516 | bt_sock_unlink(&hci_sk_list, sk); |
517 | ||
518 | if (hdev) { | |
23500189 | 519 | if (hci_pi(sk)->channel == HCI_CHANNEL_USER) { |
0602a8ad | 520 | mgmt_index_added(hdev); |
a358dc11 | 521 | hci_dev_clear_flag(hdev, HCI_USER_CHANNEL); |
23500189 MH |
522 | hci_dev_close(hdev->id); |
523 | } | |
524 | ||
1da177e4 LT |
525 | atomic_dec(&hdev->promisc); |
526 | hci_dev_put(hdev); | |
527 | } | |
528 | ||
529 | sock_orphan(sk); | |
530 | ||
531 | skb_queue_purge(&sk->sk_receive_queue); | |
532 | skb_queue_purge(&sk->sk_write_queue); | |
533 | ||
534 | sock_put(sk); | |
535 | return 0; | |
536 | } | |
537 | ||
b2a66aad | 538 | static int hci_sock_blacklist_add(struct hci_dev *hdev, void __user *arg) |
f0358568 JH |
539 | { |
540 | bdaddr_t bdaddr; | |
5e762444 | 541 | int err; |
f0358568 JH |
542 | |
543 | if (copy_from_user(&bdaddr, arg, sizeof(bdaddr))) | |
544 | return -EFAULT; | |
545 | ||
09fd0de5 | 546 | hci_dev_lock(hdev); |
5e762444 | 547 | |
dcc36c16 | 548 | err = hci_bdaddr_list_add(&hdev->blacklist, &bdaddr, BDADDR_BREDR); |
5e762444 | 549 | |
09fd0de5 | 550 | hci_dev_unlock(hdev); |
5e762444 AJ |
551 | |
552 | return err; | |
f0358568 JH |
553 | } |
554 | ||
b2a66aad | 555 | static int hci_sock_blacklist_del(struct hci_dev *hdev, void __user *arg) |
f0358568 JH |
556 | { |
557 | bdaddr_t bdaddr; | |
5e762444 | 558 | int err; |
f0358568 JH |
559 | |
560 | if (copy_from_user(&bdaddr, arg, sizeof(bdaddr))) | |
561 | return -EFAULT; | |
562 | ||
09fd0de5 | 563 | hci_dev_lock(hdev); |
5e762444 | 564 | |
dcc36c16 | 565 | err = hci_bdaddr_list_del(&hdev->blacklist, &bdaddr, BDADDR_BREDR); |
5e762444 | 566 | |
09fd0de5 | 567 | hci_dev_unlock(hdev); |
5e762444 AJ |
568 | |
569 | return err; | |
f0358568 JH |
570 | } |
571 | ||
8e87d142 | 572 | /* Ioctls that require bound socket */ |
6039aa73 GP |
573 | static int hci_sock_bound_ioctl(struct sock *sk, unsigned int cmd, |
574 | unsigned long arg) | |
1da177e4 LT |
575 | { |
576 | struct hci_dev *hdev = hci_pi(sk)->hdev; | |
577 | ||
578 | if (!hdev) | |
579 | return -EBADFD; | |
580 | ||
d7a5a11d | 581 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) |
0736cfa8 MH |
582 | return -EBUSY; |
583 | ||
d7a5a11d | 584 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
fee746b0 MH |
585 | return -EOPNOTSUPP; |
586 | ||
5b69bef5 MH |
587 | if (hdev->dev_type != HCI_BREDR) |
588 | return -EOPNOTSUPP; | |
589 | ||
1da177e4 LT |
590 | switch (cmd) { |
591 | case HCISETRAW: | |
592 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 593 | return -EPERM; |
db596681 | 594 | return -EOPNOTSUPP; |
1da177e4 | 595 | |
1da177e4 | 596 | case HCIGETCONNINFO: |
40be492f MH |
597 | return hci_get_conn_info(hdev, (void __user *) arg); |
598 | ||
599 | case HCIGETAUTHINFO: | |
600 | return hci_get_auth_info(hdev, (void __user *) arg); | |
1da177e4 | 601 | |
f0358568 JH |
602 | case HCIBLOCKADDR: |
603 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 604 | return -EPERM; |
b2a66aad | 605 | return hci_sock_blacklist_add(hdev, (void __user *) arg); |
f0358568 JH |
606 | |
607 | case HCIUNBLOCKADDR: | |
608 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 609 | return -EPERM; |
b2a66aad | 610 | return hci_sock_blacklist_del(hdev, (void __user *) arg); |
1da177e4 | 611 | } |
0736cfa8 | 612 | |
324d36ed | 613 | return -ENOIOCTLCMD; |
1da177e4 LT |
614 | } |
615 | ||
8fc9ced3 GP |
616 | static int hci_sock_ioctl(struct socket *sock, unsigned int cmd, |
617 | unsigned long arg) | |
1da177e4 | 618 | { |
40be492f | 619 | void __user *argp = (void __user *) arg; |
0736cfa8 | 620 | struct sock *sk = sock->sk; |
1da177e4 LT |
621 | int err; |
622 | ||
623 | BT_DBG("cmd %x arg %lx", cmd, arg); | |
624 | ||
c1c4f956 MH |
625 | lock_sock(sk); |
626 | ||
627 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) { | |
628 | err = -EBADFD; | |
629 | goto done; | |
630 | } | |
631 | ||
632 | release_sock(sk); | |
633 | ||
1da177e4 LT |
634 | switch (cmd) { |
635 | case HCIGETDEVLIST: | |
636 | return hci_get_dev_list(argp); | |
637 | ||
638 | case HCIGETDEVINFO: | |
639 | return hci_get_dev_info(argp); | |
640 | ||
641 | case HCIGETCONNLIST: | |
642 | return hci_get_conn_list(argp); | |
643 | ||
644 | case HCIDEVUP: | |
645 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 646 | return -EPERM; |
1da177e4 LT |
647 | return hci_dev_open(arg); |
648 | ||
649 | case HCIDEVDOWN: | |
650 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 651 | return -EPERM; |
1da177e4 LT |
652 | return hci_dev_close(arg); |
653 | ||
654 | case HCIDEVRESET: | |
655 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 656 | return -EPERM; |
1da177e4 LT |
657 | return hci_dev_reset(arg); |
658 | ||
659 | case HCIDEVRESTAT: | |
660 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 661 | return -EPERM; |
1da177e4 LT |
662 | return hci_dev_reset_stat(arg); |
663 | ||
664 | case HCISETSCAN: | |
665 | case HCISETAUTH: | |
666 | case HCISETENCRYPT: | |
667 | case HCISETPTYPE: | |
668 | case HCISETLINKPOL: | |
669 | case HCISETLINKMODE: | |
670 | case HCISETACLMTU: | |
671 | case HCISETSCOMTU: | |
672 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 673 | return -EPERM; |
1da177e4 LT |
674 | return hci_dev_cmd(cmd, argp); |
675 | ||
676 | case HCIINQUIRY: | |
677 | return hci_inquiry(argp); | |
1da177e4 | 678 | } |
c1c4f956 MH |
679 | |
680 | lock_sock(sk); | |
681 | ||
682 | err = hci_sock_bound_ioctl(sk, cmd, arg); | |
683 | ||
684 | done: | |
685 | release_sock(sk); | |
686 | return err; | |
1da177e4 LT |
687 | } |
688 | ||
8fc9ced3 GP |
689 | static int hci_sock_bind(struct socket *sock, struct sockaddr *addr, |
690 | int addr_len) | |
1da177e4 | 691 | { |
0381101f | 692 | struct sockaddr_hci haddr; |
1da177e4 LT |
693 | struct sock *sk = sock->sk; |
694 | struct hci_dev *hdev = NULL; | |
0381101f | 695 | int len, err = 0; |
1da177e4 LT |
696 | |
697 | BT_DBG("sock %p sk %p", sock, sk); | |
698 | ||
0381101f JH |
699 | if (!addr) |
700 | return -EINVAL; | |
701 | ||
702 | memset(&haddr, 0, sizeof(haddr)); | |
703 | len = min_t(unsigned int, sizeof(haddr), addr_len); | |
704 | memcpy(&haddr, addr, len); | |
705 | ||
706 | if (haddr.hci_family != AF_BLUETOOTH) | |
707 | return -EINVAL; | |
708 | ||
1da177e4 LT |
709 | lock_sock(sk); |
710 | ||
7cc2ade2 | 711 | if (sk->sk_state == BT_BOUND) { |
1da177e4 LT |
712 | err = -EALREADY; |
713 | goto done; | |
714 | } | |
715 | ||
7cc2ade2 MH |
716 | switch (haddr.hci_channel) { |
717 | case HCI_CHANNEL_RAW: | |
718 | if (hci_pi(sk)->hdev) { | |
719 | err = -EALREADY; | |
1da177e4 LT |
720 | goto done; |
721 | } | |
722 | ||
7cc2ade2 MH |
723 | if (haddr.hci_dev != HCI_DEV_NONE) { |
724 | hdev = hci_dev_get(haddr.hci_dev); | |
725 | if (!hdev) { | |
726 | err = -ENODEV; | |
727 | goto done; | |
728 | } | |
729 | ||
730 | atomic_inc(&hdev->promisc); | |
731 | } | |
732 | ||
733 | hci_pi(sk)->hdev = hdev; | |
734 | break; | |
735 | ||
23500189 MH |
736 | case HCI_CHANNEL_USER: |
737 | if (hci_pi(sk)->hdev) { | |
738 | err = -EALREADY; | |
739 | goto done; | |
740 | } | |
741 | ||
742 | if (haddr.hci_dev == HCI_DEV_NONE) { | |
743 | err = -EINVAL; | |
744 | goto done; | |
745 | } | |
746 | ||
10a8b86f | 747 | if (!capable(CAP_NET_ADMIN)) { |
23500189 MH |
748 | err = -EPERM; |
749 | goto done; | |
750 | } | |
751 | ||
752 | hdev = hci_dev_get(haddr.hci_dev); | |
753 | if (!hdev) { | |
754 | err = -ENODEV; | |
755 | goto done; | |
756 | } | |
757 | ||
758 | if (test_bit(HCI_UP, &hdev->flags) || | |
759 | test_bit(HCI_INIT, &hdev->flags) || | |
d7a5a11d MH |
760 | hci_dev_test_flag(hdev, HCI_SETUP) || |
761 | hci_dev_test_flag(hdev, HCI_CONFIG)) { | |
23500189 MH |
762 | err = -EBUSY; |
763 | hci_dev_put(hdev); | |
764 | goto done; | |
765 | } | |
766 | ||
238be788 | 767 | if (hci_dev_test_and_set_flag(hdev, HCI_USER_CHANNEL)) { |
23500189 MH |
768 | err = -EUSERS; |
769 | hci_dev_put(hdev); | |
770 | goto done; | |
771 | } | |
772 | ||
0602a8ad | 773 | mgmt_index_removed(hdev); |
23500189 MH |
774 | |
775 | err = hci_dev_open(hdev->id); | |
776 | if (err) { | |
a358dc11 | 777 | hci_dev_clear_flag(hdev, HCI_USER_CHANNEL); |
0602a8ad | 778 | mgmt_index_added(hdev); |
23500189 MH |
779 | hci_dev_put(hdev); |
780 | goto done; | |
781 | } | |
782 | ||
783 | atomic_inc(&hdev->promisc); | |
784 | ||
785 | hci_pi(sk)->hdev = hdev; | |
786 | break; | |
787 | ||
cd82e61c MH |
788 | case HCI_CHANNEL_MONITOR: |
789 | if (haddr.hci_dev != HCI_DEV_NONE) { | |
790 | err = -EINVAL; | |
791 | goto done; | |
792 | } | |
793 | ||
794 | if (!capable(CAP_NET_RAW)) { | |
795 | err = -EPERM; | |
796 | goto done; | |
797 | } | |
798 | ||
50ebc055 MH |
799 | /* The monitor interface is restricted to CAP_NET_RAW |
800 | * capabilities and with that implicitly trusted. | |
801 | */ | |
802 | hci_sock_set_flag(sk, HCI_SOCK_TRUSTED); | |
803 | ||
cd82e61c MH |
804 | send_monitor_replay(sk); |
805 | ||
806 | atomic_inc(&monitor_promisc); | |
807 | break; | |
808 | ||
7cc2ade2 | 809 | default: |
801c1e8d JH |
810 | if (!hci_mgmt_chan_find(haddr.hci_channel)) { |
811 | err = -EINVAL; | |
812 | goto done; | |
813 | } | |
814 | ||
815 | if (haddr.hci_dev != HCI_DEV_NONE) { | |
816 | err = -EINVAL; | |
817 | goto done; | |
818 | } | |
819 | ||
820 | if (!capable(CAP_NET_ADMIN)) { | |
821 | err = -EPERM; | |
822 | goto done; | |
823 | } | |
824 | ||
50ebc055 MH |
825 | /* Since the access to control channels is currently |
826 | * restricted to CAP_NET_ADMIN capabilities, every | |
827 | * socket is implicitly trusted. | |
828 | */ | |
829 | hci_sock_set_flag(sk, HCI_SOCK_TRUSTED); | |
830 | ||
f9207338 MH |
831 | /* At the moment the index and unconfigured index events |
832 | * are enabled unconditionally. Setting them on each | |
833 | * socket when binding keeps this functionality. They | |
834 | * however might be cleared later and then sending of these | |
835 | * events will be disabled, but that is then intentional. | |
836 | */ | |
837 | if (haddr.hci_channel == HCI_CHANNEL_CONTROL) { | |
838 | hci_sock_set_flag(sk, HCI_MGMT_INDEX_EVENTS); | |
839 | hci_sock_set_flag(sk, HCI_MGMT_UNCONF_INDEX_EVENTS); | |
840 | } | |
801c1e8d | 841 | break; |
1da177e4 LT |
842 | } |
843 | ||
7cc2ade2 | 844 | |
0381101f | 845 | hci_pi(sk)->channel = haddr.hci_channel; |
1da177e4 LT |
846 | sk->sk_state = BT_BOUND; |
847 | ||
848 | done: | |
849 | release_sock(sk); | |
850 | return err; | |
851 | } | |
852 | ||
8fc9ced3 GP |
853 | static int hci_sock_getname(struct socket *sock, struct sockaddr *addr, |
854 | int *addr_len, int peer) | |
1da177e4 LT |
855 | { |
856 | struct sockaddr_hci *haddr = (struct sockaddr_hci *) addr; | |
857 | struct sock *sk = sock->sk; | |
9d4b68b2 MH |
858 | struct hci_dev *hdev; |
859 | int err = 0; | |
1da177e4 LT |
860 | |
861 | BT_DBG("sock %p sk %p", sock, sk); | |
862 | ||
06f43cbc MH |
863 | if (peer) |
864 | return -EOPNOTSUPP; | |
865 | ||
1da177e4 LT |
866 | lock_sock(sk); |
867 | ||
9d4b68b2 MH |
868 | hdev = hci_pi(sk)->hdev; |
869 | if (!hdev) { | |
870 | err = -EBADFD; | |
871 | goto done; | |
872 | } | |
873 | ||
1da177e4 LT |
874 | *addr_len = sizeof(*haddr); |
875 | haddr->hci_family = AF_BLUETOOTH; | |
7b005bd3 | 876 | haddr->hci_dev = hdev->id; |
9d4b68b2 | 877 | haddr->hci_channel= hci_pi(sk)->channel; |
1da177e4 | 878 | |
9d4b68b2 | 879 | done: |
1da177e4 | 880 | release_sock(sk); |
9d4b68b2 | 881 | return err; |
1da177e4 LT |
882 | } |
883 | ||
6039aa73 GP |
884 | static void hci_sock_cmsg(struct sock *sk, struct msghdr *msg, |
885 | struct sk_buff *skb) | |
1da177e4 LT |
886 | { |
887 | __u32 mask = hci_pi(sk)->cmsg_mask; | |
888 | ||
0d48d939 MH |
889 | if (mask & HCI_CMSG_DIR) { |
890 | int incoming = bt_cb(skb)->incoming; | |
8fc9ced3 GP |
891 | put_cmsg(msg, SOL_HCI, HCI_CMSG_DIR, sizeof(incoming), |
892 | &incoming); | |
0d48d939 | 893 | } |
1da177e4 | 894 | |
a61bbcf2 | 895 | if (mask & HCI_CMSG_TSTAMP) { |
f6e623a6 JFS |
896 | #ifdef CONFIG_COMPAT |
897 | struct compat_timeval ctv; | |
898 | #endif | |
a61bbcf2 | 899 | struct timeval tv; |
767c5eb5 MH |
900 | void *data; |
901 | int len; | |
a61bbcf2 PM |
902 | |
903 | skb_get_timestamp(skb, &tv); | |
767c5eb5 | 904 | |
1da97f83 DM |
905 | data = &tv; |
906 | len = sizeof(tv); | |
907 | #ifdef CONFIG_COMPAT | |
da88cea1 L |
908 | if (!COMPAT_USE_64BIT_TIME && |
909 | (msg->msg_flags & MSG_CMSG_COMPAT)) { | |
767c5eb5 MH |
910 | ctv.tv_sec = tv.tv_sec; |
911 | ctv.tv_usec = tv.tv_usec; | |
912 | data = &ctv; | |
913 | len = sizeof(ctv); | |
767c5eb5 | 914 | } |
1da97f83 | 915 | #endif |
767c5eb5 MH |
916 | |
917 | put_cmsg(msg, SOL_HCI, HCI_CMSG_TSTAMP, len, data); | |
a61bbcf2 | 918 | } |
1da177e4 | 919 | } |
8e87d142 | 920 | |
1b784140 YX |
921 | static int hci_sock_recvmsg(struct socket *sock, struct msghdr *msg, size_t len, |
922 | int flags) | |
1da177e4 LT |
923 | { |
924 | int noblock = flags & MSG_DONTWAIT; | |
925 | struct sock *sk = sock->sk; | |
926 | struct sk_buff *skb; | |
927 | int copied, err; | |
928 | ||
929 | BT_DBG("sock %p, sk %p", sock, sk); | |
930 | ||
931 | if (flags & (MSG_OOB)) | |
932 | return -EOPNOTSUPP; | |
933 | ||
934 | if (sk->sk_state == BT_CLOSED) | |
935 | return 0; | |
936 | ||
70f23020 AE |
937 | skb = skb_recv_datagram(sk, flags, noblock, &err); |
938 | if (!skb) | |
1da177e4 LT |
939 | return err; |
940 | ||
1da177e4 LT |
941 | copied = skb->len; |
942 | if (len < copied) { | |
943 | msg->msg_flags |= MSG_TRUNC; | |
944 | copied = len; | |
945 | } | |
946 | ||
badff6d0 | 947 | skb_reset_transport_header(skb); |
51f3d02b | 948 | err = skb_copy_datagram_msg(skb, 0, msg, copied); |
1da177e4 | 949 | |
3a208627 MH |
950 | switch (hci_pi(sk)->channel) { |
951 | case HCI_CHANNEL_RAW: | |
952 | hci_sock_cmsg(sk, msg, skb); | |
953 | break; | |
23500189 | 954 | case HCI_CHANNEL_USER: |
cd82e61c MH |
955 | case HCI_CHANNEL_MONITOR: |
956 | sock_recv_timestamp(msg, sk, skb); | |
957 | break; | |
801c1e8d JH |
958 | default: |
959 | if (hci_mgmt_chan_find(hci_pi(sk)->channel)) | |
960 | sock_recv_timestamp(msg, sk, skb); | |
961 | break; | |
3a208627 | 962 | } |
1da177e4 LT |
963 | |
964 | skb_free_datagram(sk, skb); | |
965 | ||
966 | return err ? : copied; | |
967 | } | |
968 | ||
1b784140 YX |
969 | static int hci_sock_sendmsg(struct socket *sock, struct msghdr *msg, |
970 | size_t len) | |
1da177e4 LT |
971 | { |
972 | struct sock *sk = sock->sk; | |
801c1e8d | 973 | struct hci_mgmt_chan *chan; |
1da177e4 LT |
974 | struct hci_dev *hdev; |
975 | struct sk_buff *skb; | |
976 | int err; | |
977 | ||
978 | BT_DBG("sock %p sk %p", sock, sk); | |
979 | ||
980 | if (msg->msg_flags & MSG_OOB) | |
981 | return -EOPNOTSUPP; | |
982 | ||
983 | if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_NOSIGNAL|MSG_ERRQUEUE)) | |
984 | return -EINVAL; | |
985 | ||
986 | if (len < 4 || len > HCI_MAX_FRAME_SIZE) | |
987 | return -EINVAL; | |
988 | ||
989 | lock_sock(sk); | |
990 | ||
0381101f JH |
991 | switch (hci_pi(sk)->channel) { |
992 | case HCI_CHANNEL_RAW: | |
23500189 | 993 | case HCI_CHANNEL_USER: |
0381101f | 994 | break; |
cd82e61c MH |
995 | case HCI_CHANNEL_MONITOR: |
996 | err = -EOPNOTSUPP; | |
997 | goto done; | |
0381101f | 998 | default: |
801c1e8d JH |
999 | mutex_lock(&mgmt_chan_list_lock); |
1000 | chan = __hci_mgmt_chan_find(hci_pi(sk)->channel); | |
1001 | if (chan) | |
6d785aa3 | 1002 | err = mgmt_control(chan, sk, msg, len); |
801c1e8d JH |
1003 | else |
1004 | err = -EINVAL; | |
1005 | ||
1006 | mutex_unlock(&mgmt_chan_list_lock); | |
0381101f JH |
1007 | goto done; |
1008 | } | |
1009 | ||
70f23020 AE |
1010 | hdev = hci_pi(sk)->hdev; |
1011 | if (!hdev) { | |
1da177e4 LT |
1012 | err = -EBADFD; |
1013 | goto done; | |
1014 | } | |
1015 | ||
7e21addc MH |
1016 | if (!test_bit(HCI_UP, &hdev->flags)) { |
1017 | err = -ENETDOWN; | |
1018 | goto done; | |
1019 | } | |
1020 | ||
70f23020 AE |
1021 | skb = bt_skb_send_alloc(sk, len, msg->msg_flags & MSG_DONTWAIT, &err); |
1022 | if (!skb) | |
1da177e4 LT |
1023 | goto done; |
1024 | ||
6ce8e9ce | 1025 | if (memcpy_from_msg(skb_put(skb, len), msg, len)) { |
1da177e4 LT |
1026 | err = -EFAULT; |
1027 | goto drop; | |
1028 | } | |
1029 | ||
0d48d939 | 1030 | bt_cb(skb)->pkt_type = *((unsigned char *) skb->data); |
1da177e4 | 1031 | skb_pull(skb, 1); |
1da177e4 | 1032 | |
1bc5ad16 MH |
1033 | if (hci_pi(sk)->channel == HCI_CHANNEL_USER) { |
1034 | /* No permission check is needed for user channel | |
1035 | * since that gets enforced when binding the socket. | |
1036 | * | |
1037 | * However check that the packet type is valid. | |
1038 | */ | |
1039 | if (bt_cb(skb)->pkt_type != HCI_COMMAND_PKT && | |
1040 | bt_cb(skb)->pkt_type != HCI_ACLDATA_PKT && | |
1041 | bt_cb(skb)->pkt_type != HCI_SCODATA_PKT) { | |
1042 | err = -EINVAL; | |
1043 | goto drop; | |
1044 | } | |
1045 | ||
1046 | skb_queue_tail(&hdev->raw_q, skb); | |
1047 | queue_work(hdev->workqueue, &hdev->tx_work); | |
1048 | } else if (bt_cb(skb)->pkt_type == HCI_COMMAND_PKT) { | |
83985319 | 1049 | u16 opcode = get_unaligned_le16(skb->data); |
1da177e4 LT |
1050 | u16 ogf = hci_opcode_ogf(opcode); |
1051 | u16 ocf = hci_opcode_ocf(opcode); | |
1052 | ||
1053 | if (((ogf > HCI_SFLT_MAX_OGF) || | |
3bb3c755 GP |
1054 | !hci_test_bit(ocf & HCI_FLT_OCF_BITS, |
1055 | &hci_sec_filter.ocf_mask[ogf])) && | |
1056 | !capable(CAP_NET_RAW)) { | |
1da177e4 LT |
1057 | err = -EPERM; |
1058 | goto drop; | |
1059 | } | |
1060 | ||
fee746b0 | 1061 | if (ogf == 0x3f) { |
1da177e4 | 1062 | skb_queue_tail(&hdev->raw_q, skb); |
3eff45ea | 1063 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 1064 | } else { |
49c922bb | 1065 | /* Stand-alone HCI commands must be flagged as |
11714b3d JH |
1066 | * single-command requests. |
1067 | */ | |
6368c235 | 1068 | bt_cb(skb)->req_start = 1; |
11714b3d | 1069 | |
1da177e4 | 1070 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 1071 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
1072 | } |
1073 | } else { | |
1074 | if (!capable(CAP_NET_RAW)) { | |
1075 | err = -EPERM; | |
1076 | goto drop; | |
1077 | } | |
1078 | ||
1079 | skb_queue_tail(&hdev->raw_q, skb); | |
3eff45ea | 1080 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 LT |
1081 | } |
1082 | ||
1083 | err = len; | |
1084 | ||
1085 | done: | |
1086 | release_sock(sk); | |
1087 | return err; | |
1088 | ||
1089 | drop: | |
1090 | kfree_skb(skb); | |
1091 | goto done; | |
1092 | } | |
1093 | ||
8fc9ced3 GP |
1094 | static int hci_sock_setsockopt(struct socket *sock, int level, int optname, |
1095 | char __user *optval, unsigned int len) | |
1da177e4 LT |
1096 | { |
1097 | struct hci_ufilter uf = { .opcode = 0 }; | |
1098 | struct sock *sk = sock->sk; | |
1099 | int err = 0, opt = 0; | |
1100 | ||
1101 | BT_DBG("sk %p, opt %d", sk, optname); | |
1102 | ||
1103 | lock_sock(sk); | |
1104 | ||
2f39cdb7 | 1105 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) { |
c2371e80 | 1106 | err = -EBADFD; |
2f39cdb7 MH |
1107 | goto done; |
1108 | } | |
1109 | ||
1da177e4 LT |
1110 | switch (optname) { |
1111 | case HCI_DATA_DIR: | |
1112 | if (get_user(opt, (int __user *)optval)) { | |
1113 | err = -EFAULT; | |
1114 | break; | |
1115 | } | |
1116 | ||
1117 | if (opt) | |
1118 | hci_pi(sk)->cmsg_mask |= HCI_CMSG_DIR; | |
1119 | else | |
1120 | hci_pi(sk)->cmsg_mask &= ~HCI_CMSG_DIR; | |
1121 | break; | |
1122 | ||
1123 | case HCI_TIME_STAMP: | |
1124 | if (get_user(opt, (int __user *)optval)) { | |
1125 | err = -EFAULT; | |
1126 | break; | |
1127 | } | |
1128 | ||
1129 | if (opt) | |
1130 | hci_pi(sk)->cmsg_mask |= HCI_CMSG_TSTAMP; | |
1131 | else | |
1132 | hci_pi(sk)->cmsg_mask &= ~HCI_CMSG_TSTAMP; | |
1133 | break; | |
1134 | ||
1135 | case HCI_FILTER: | |
0878b666 MH |
1136 | { |
1137 | struct hci_filter *f = &hci_pi(sk)->filter; | |
1138 | ||
1139 | uf.type_mask = f->type_mask; | |
1140 | uf.opcode = f->opcode; | |
1141 | uf.event_mask[0] = *((u32 *) f->event_mask + 0); | |
1142 | uf.event_mask[1] = *((u32 *) f->event_mask + 1); | |
1143 | } | |
1144 | ||
1da177e4 LT |
1145 | len = min_t(unsigned int, len, sizeof(uf)); |
1146 | if (copy_from_user(&uf, optval, len)) { | |
1147 | err = -EFAULT; | |
1148 | break; | |
1149 | } | |
1150 | ||
1151 | if (!capable(CAP_NET_RAW)) { | |
1152 | uf.type_mask &= hci_sec_filter.type_mask; | |
1153 | uf.event_mask[0] &= *((u32 *) hci_sec_filter.event_mask + 0); | |
1154 | uf.event_mask[1] &= *((u32 *) hci_sec_filter.event_mask + 1); | |
1155 | } | |
1156 | ||
1157 | { | |
1158 | struct hci_filter *f = &hci_pi(sk)->filter; | |
1159 | ||
1160 | f->type_mask = uf.type_mask; | |
1161 | f->opcode = uf.opcode; | |
1162 | *((u32 *) f->event_mask + 0) = uf.event_mask[0]; | |
1163 | *((u32 *) f->event_mask + 1) = uf.event_mask[1]; | |
1164 | } | |
8e87d142 | 1165 | break; |
1da177e4 LT |
1166 | |
1167 | default: | |
1168 | err = -ENOPROTOOPT; | |
1169 | break; | |
1170 | } | |
1171 | ||
2f39cdb7 | 1172 | done: |
1da177e4 LT |
1173 | release_sock(sk); |
1174 | return err; | |
1175 | } | |
1176 | ||
8fc9ced3 GP |
1177 | static int hci_sock_getsockopt(struct socket *sock, int level, int optname, |
1178 | char __user *optval, int __user *optlen) | |
1da177e4 LT |
1179 | { |
1180 | struct hci_ufilter uf; | |
1181 | struct sock *sk = sock->sk; | |
cedc5469 MH |
1182 | int len, opt, err = 0; |
1183 | ||
1184 | BT_DBG("sk %p, opt %d", sk, optname); | |
1da177e4 LT |
1185 | |
1186 | if (get_user(len, optlen)) | |
1187 | return -EFAULT; | |
1188 | ||
cedc5469 MH |
1189 | lock_sock(sk); |
1190 | ||
1191 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) { | |
c2371e80 | 1192 | err = -EBADFD; |
cedc5469 MH |
1193 | goto done; |
1194 | } | |
1195 | ||
1da177e4 LT |
1196 | switch (optname) { |
1197 | case HCI_DATA_DIR: | |
1198 | if (hci_pi(sk)->cmsg_mask & HCI_CMSG_DIR) | |
1199 | opt = 1; | |
8e87d142 | 1200 | else |
1da177e4 LT |
1201 | opt = 0; |
1202 | ||
1203 | if (put_user(opt, optval)) | |
cedc5469 | 1204 | err = -EFAULT; |
1da177e4 LT |
1205 | break; |
1206 | ||
1207 | case HCI_TIME_STAMP: | |
1208 | if (hci_pi(sk)->cmsg_mask & HCI_CMSG_TSTAMP) | |
1209 | opt = 1; | |
8e87d142 | 1210 | else |
1da177e4 LT |
1211 | opt = 0; |
1212 | ||
1213 | if (put_user(opt, optval)) | |
cedc5469 | 1214 | err = -EFAULT; |
1da177e4 LT |
1215 | break; |
1216 | ||
1217 | case HCI_FILTER: | |
1218 | { | |
1219 | struct hci_filter *f = &hci_pi(sk)->filter; | |
1220 | ||
e15ca9a0 | 1221 | memset(&uf, 0, sizeof(uf)); |
1da177e4 LT |
1222 | uf.type_mask = f->type_mask; |
1223 | uf.opcode = f->opcode; | |
1224 | uf.event_mask[0] = *((u32 *) f->event_mask + 0); | |
1225 | uf.event_mask[1] = *((u32 *) f->event_mask + 1); | |
1226 | } | |
1227 | ||
1228 | len = min_t(unsigned int, len, sizeof(uf)); | |
1229 | if (copy_to_user(optval, &uf, len)) | |
cedc5469 | 1230 | err = -EFAULT; |
1da177e4 LT |
1231 | break; |
1232 | ||
1233 | default: | |
cedc5469 | 1234 | err = -ENOPROTOOPT; |
1da177e4 LT |
1235 | break; |
1236 | } | |
1237 | ||
cedc5469 MH |
1238 | done: |
1239 | release_sock(sk); | |
1240 | return err; | |
1da177e4 LT |
1241 | } |
1242 | ||
90ddc4f0 | 1243 | static const struct proto_ops hci_sock_ops = { |
1da177e4 LT |
1244 | .family = PF_BLUETOOTH, |
1245 | .owner = THIS_MODULE, | |
1246 | .release = hci_sock_release, | |
1247 | .bind = hci_sock_bind, | |
1248 | .getname = hci_sock_getname, | |
1249 | .sendmsg = hci_sock_sendmsg, | |
1250 | .recvmsg = hci_sock_recvmsg, | |
1251 | .ioctl = hci_sock_ioctl, | |
1252 | .poll = datagram_poll, | |
1253 | .listen = sock_no_listen, | |
1254 | .shutdown = sock_no_shutdown, | |
1255 | .setsockopt = hci_sock_setsockopt, | |
1256 | .getsockopt = hci_sock_getsockopt, | |
1257 | .connect = sock_no_connect, | |
1258 | .socketpair = sock_no_socketpair, | |
1259 | .accept = sock_no_accept, | |
1260 | .mmap = sock_no_mmap | |
1261 | }; | |
1262 | ||
1263 | static struct proto hci_sk_proto = { | |
1264 | .name = "HCI", | |
1265 | .owner = THIS_MODULE, | |
1266 | .obj_size = sizeof(struct hci_pinfo) | |
1267 | }; | |
1268 | ||
3f378b68 EP |
1269 | static int hci_sock_create(struct net *net, struct socket *sock, int protocol, |
1270 | int kern) | |
1da177e4 LT |
1271 | { |
1272 | struct sock *sk; | |
1273 | ||
1274 | BT_DBG("sock %p", sock); | |
1275 | ||
1276 | if (sock->type != SOCK_RAW) | |
1277 | return -ESOCKTNOSUPPORT; | |
1278 | ||
1279 | sock->ops = &hci_sock_ops; | |
1280 | ||
6257ff21 | 1281 | sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &hci_sk_proto); |
1da177e4 LT |
1282 | if (!sk) |
1283 | return -ENOMEM; | |
1284 | ||
1285 | sock_init_data(sock, sk); | |
1286 | ||
1287 | sock_reset_flag(sk, SOCK_ZAPPED); | |
1288 | ||
1289 | sk->sk_protocol = protocol; | |
1290 | ||
1291 | sock->state = SS_UNCONNECTED; | |
1292 | sk->sk_state = BT_OPEN; | |
1293 | ||
1294 | bt_sock_link(&hci_sk_list, sk); | |
1295 | return 0; | |
1296 | } | |
1297 | ||
ec1b4cf7 | 1298 | static const struct net_proto_family hci_sock_family_ops = { |
1da177e4 LT |
1299 | .family = PF_BLUETOOTH, |
1300 | .owner = THIS_MODULE, | |
1301 | .create = hci_sock_create, | |
1302 | }; | |
1303 | ||
1da177e4 LT |
1304 | int __init hci_sock_init(void) |
1305 | { | |
1306 | int err; | |
1307 | ||
b0a8e282 MH |
1308 | BUILD_BUG_ON(sizeof(struct sockaddr_hci) > sizeof(struct sockaddr)); |
1309 | ||
1da177e4 LT |
1310 | err = proto_register(&hci_sk_proto, 0); |
1311 | if (err < 0) | |
1312 | return err; | |
1313 | ||
1314 | err = bt_sock_register(BTPROTO_HCI, &hci_sock_family_ops); | |
f7c86637 MY |
1315 | if (err < 0) { |
1316 | BT_ERR("HCI socket registration failed"); | |
1da177e4 | 1317 | goto error; |
f7c86637 MY |
1318 | } |
1319 | ||
b0316615 | 1320 | err = bt_procfs_init(&init_net, "hci", &hci_sk_list, NULL); |
f7c86637 MY |
1321 | if (err < 0) { |
1322 | BT_ERR("Failed to create HCI proc file"); | |
1323 | bt_sock_unregister(BTPROTO_HCI); | |
1324 | goto error; | |
1325 | } | |
1da177e4 | 1326 | |
1da177e4 LT |
1327 | BT_INFO("HCI socket layer initialized"); |
1328 | ||
1329 | return 0; | |
1330 | ||
1331 | error: | |
1da177e4 LT |
1332 | proto_unregister(&hci_sk_proto); |
1333 | return err; | |
1334 | } | |
1335 | ||
b7440a14 | 1336 | void hci_sock_cleanup(void) |
1da177e4 | 1337 | { |
f7c86637 | 1338 | bt_procfs_cleanup(&init_net, "hci"); |
5e9d7f86 | 1339 | bt_sock_unregister(BTPROTO_HCI); |
1da177e4 | 1340 | proto_unregister(&hci_sk_proto); |
1da177e4 | 1341 | } |