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> |
787b306c | 28 | #include <linux/utsname.h> |
1da177e4 LT |
29 | #include <asm/unaligned.h> |
30 | ||
31 | #include <net/bluetooth/bluetooth.h> | |
32 | #include <net/bluetooth/hci_core.h> | |
cd82e61c | 33 | #include <net/bluetooth/hci_mon.h> |
fa4335d7 JH |
34 | #include <net/bluetooth/mgmt.h> |
35 | ||
36 | #include "mgmt_util.h" | |
1da177e4 | 37 | |
801c1e8d JH |
38 | static LIST_HEAD(mgmt_chan_list); |
39 | static DEFINE_MUTEX(mgmt_chan_list_lock); | |
40 | ||
cd82e61c MH |
41 | static atomic_t monitor_promisc = ATOMIC_INIT(0); |
42 | ||
1da177e4 LT |
43 | /* ----- HCI socket interface ----- */ |
44 | ||
863def58 MH |
45 | /* Socket info */ |
46 | #define hci_pi(sk) ((struct hci_pinfo *) sk) | |
47 | ||
48 | struct hci_pinfo { | |
49 | struct bt_sock bt; | |
50 | struct hci_dev *hdev; | |
51 | struct hci_filter filter; | |
52 | __u32 cmsg_mask; | |
53 | unsigned short channel; | |
6befc644 | 54 | unsigned long flags; |
863def58 MH |
55 | }; |
56 | ||
6befc644 MH |
57 | void hci_sock_set_flag(struct sock *sk, int nr) |
58 | { | |
59 | set_bit(nr, &hci_pi(sk)->flags); | |
60 | } | |
61 | ||
62 | void hci_sock_clear_flag(struct sock *sk, int nr) | |
63 | { | |
64 | clear_bit(nr, &hci_pi(sk)->flags); | |
65 | } | |
66 | ||
c85be545 MH |
67 | int hci_sock_test_flag(struct sock *sk, int nr) |
68 | { | |
69 | return test_bit(nr, &hci_pi(sk)->flags); | |
70 | } | |
71 | ||
d0f172b1 JH |
72 | unsigned short hci_sock_get_channel(struct sock *sk) |
73 | { | |
74 | return hci_pi(sk)->channel; | |
75 | } | |
76 | ||
9391976a | 77 | static inline int hci_test_bit(int nr, const void *addr) |
1da177e4 | 78 | { |
9391976a | 79 | return *((const __u32 *) addr + (nr >> 5)) & ((__u32) 1 << (nr & 31)); |
1da177e4 LT |
80 | } |
81 | ||
82 | /* Security filter */ | |
3ad254f7 MH |
83 | #define HCI_SFLT_MAX_OGF 5 |
84 | ||
85 | struct hci_sec_filter { | |
86 | __u32 type_mask; | |
87 | __u32 event_mask[2]; | |
88 | __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4]; | |
89 | }; | |
90 | ||
7e67c112 | 91 | static const struct hci_sec_filter hci_sec_filter = { |
1da177e4 LT |
92 | /* Packet types */ |
93 | 0x10, | |
94 | /* Events */ | |
dd7f5527 | 95 | { 0x1000d9fe, 0x0000b00c }, |
1da177e4 LT |
96 | /* Commands */ |
97 | { | |
98 | { 0x0 }, | |
99 | /* OGF_LINK_CTL */ | |
7c631a67 | 100 | { 0xbe000006, 0x00000001, 0x00000000, 0x00 }, |
1da177e4 | 101 | /* OGF_LINK_POLICY */ |
7c631a67 | 102 | { 0x00005200, 0x00000000, 0x00000000, 0x00 }, |
1da177e4 | 103 | /* OGF_HOST_CTL */ |
7c631a67 | 104 | { 0xaab00200, 0x2b402aaa, 0x05220154, 0x00 }, |
1da177e4 | 105 | /* OGF_INFO_PARAM */ |
7c631a67 | 106 | { 0x000002be, 0x00000000, 0x00000000, 0x00 }, |
1da177e4 | 107 | /* OGF_STATUS_PARAM */ |
7c631a67 | 108 | { 0x000000ea, 0x00000000, 0x00000000, 0x00 } |
1da177e4 LT |
109 | } |
110 | }; | |
111 | ||
112 | static struct bt_sock_list hci_sk_list = { | |
d5fb2962 | 113 | .lock = __RW_LOCK_UNLOCKED(hci_sk_list.lock) |
1da177e4 LT |
114 | }; |
115 | ||
f81fe64f MH |
116 | static bool is_filtered_packet(struct sock *sk, struct sk_buff *skb) |
117 | { | |
118 | struct hci_filter *flt; | |
119 | int flt_type, flt_event; | |
120 | ||
121 | /* Apply filter */ | |
122 | flt = &hci_pi(sk)->filter; | |
123 | ||
d79f34e3 | 124 | flt_type = hci_skb_pkt_type(skb) & HCI_FLT_TYPE_BITS; |
f81fe64f MH |
125 | |
126 | if (!test_bit(flt_type, &flt->type_mask)) | |
127 | return true; | |
128 | ||
129 | /* Extra filter for event packets only */ | |
d79f34e3 | 130 | if (hci_skb_pkt_type(skb) != HCI_EVENT_PKT) |
f81fe64f MH |
131 | return false; |
132 | ||
133 | flt_event = (*(__u8 *)skb->data & HCI_FLT_EVENT_BITS); | |
134 | ||
135 | if (!hci_test_bit(flt_event, &flt->event_mask)) | |
136 | return true; | |
137 | ||
138 | /* Check filter only when opcode is set */ | |
139 | if (!flt->opcode) | |
140 | return false; | |
141 | ||
142 | if (flt_event == HCI_EV_CMD_COMPLETE && | |
143 | flt->opcode != get_unaligned((__le16 *)(skb->data + 3))) | |
144 | return true; | |
145 | ||
146 | if (flt_event == HCI_EV_CMD_STATUS && | |
147 | flt->opcode != get_unaligned((__le16 *)(skb->data + 4))) | |
148 | return true; | |
149 | ||
150 | return false; | |
151 | } | |
152 | ||
1da177e4 | 153 | /* Send frame to RAW socket */ |
470fe1b5 | 154 | void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
155 | { |
156 | struct sock *sk; | |
e0edf373 | 157 | struct sk_buff *skb_copy = NULL; |
1da177e4 LT |
158 | |
159 | BT_DBG("hdev %p len %d", hdev, skb->len); | |
160 | ||
161 | read_lock(&hci_sk_list.lock); | |
470fe1b5 | 162 | |
b67bfe0d | 163 | sk_for_each(sk, &hci_sk_list.head) { |
1da177e4 LT |
164 | struct sk_buff *nskb; |
165 | ||
166 | if (sk->sk_state != BT_BOUND || hci_pi(sk)->hdev != hdev) | |
167 | continue; | |
168 | ||
169 | /* Don't send frame to the socket it came from */ | |
170 | if (skb->sk == sk) | |
171 | continue; | |
172 | ||
23500189 | 173 | if (hci_pi(sk)->channel == HCI_CHANNEL_RAW) { |
d79f34e3 MH |
174 | if (hci_skb_pkt_type(skb) != HCI_COMMAND_PKT && |
175 | hci_skb_pkt_type(skb) != HCI_EVENT_PKT && | |
176 | hci_skb_pkt_type(skb) != HCI_ACLDATA_PKT && | |
177 | hci_skb_pkt_type(skb) != HCI_SCODATA_PKT) | |
bb77543e | 178 | continue; |
23500189 MH |
179 | if (is_filtered_packet(sk, skb)) |
180 | continue; | |
181 | } else if (hci_pi(sk)->channel == HCI_CHANNEL_USER) { | |
182 | if (!bt_cb(skb)->incoming) | |
183 | continue; | |
d79f34e3 MH |
184 | if (hci_skb_pkt_type(skb) != HCI_EVENT_PKT && |
185 | hci_skb_pkt_type(skb) != HCI_ACLDATA_PKT && | |
186 | hci_skb_pkt_type(skb) != HCI_SCODATA_PKT) | |
23500189 MH |
187 | continue; |
188 | } else { | |
189 | /* Don't send frame to other channel types */ | |
1da177e4 | 190 | continue; |
23500189 | 191 | } |
1da177e4 | 192 | |
e0edf373 MH |
193 | if (!skb_copy) { |
194 | /* Create a private copy with headroom */ | |
bad93e9d | 195 | skb_copy = __pskb_copy_fclone(skb, 1, GFP_ATOMIC, true); |
e0edf373 MH |
196 | if (!skb_copy) |
197 | continue; | |
198 | ||
199 | /* Put type byte before the data */ | |
d79f34e3 | 200 | memcpy(skb_push(skb_copy, 1), &hci_skb_pkt_type(skb), 1); |
e0edf373 MH |
201 | } |
202 | ||
203 | nskb = skb_clone(skb_copy, GFP_ATOMIC); | |
70f23020 | 204 | if (!nskb) |
1da177e4 LT |
205 | continue; |
206 | ||
470fe1b5 MH |
207 | if (sock_queue_rcv_skb(sk, nskb)) |
208 | kfree_skb(nskb); | |
209 | } | |
210 | ||
211 | read_unlock(&hci_sk_list.lock); | |
e0edf373 MH |
212 | |
213 | kfree_skb(skb_copy); | |
470fe1b5 MH |
214 | } |
215 | ||
7129069e JH |
216 | /* Send frame to sockets with specific channel */ |
217 | void hci_send_to_channel(unsigned short channel, struct sk_buff *skb, | |
c08b1a1d | 218 | int flag, struct sock *skip_sk) |
470fe1b5 MH |
219 | { |
220 | struct sock *sk; | |
470fe1b5 | 221 | |
7129069e | 222 | BT_DBG("channel %u len %d", channel, skb->len); |
470fe1b5 MH |
223 | |
224 | read_lock(&hci_sk_list.lock); | |
225 | ||
b67bfe0d | 226 | sk_for_each(sk, &hci_sk_list.head) { |
470fe1b5 MH |
227 | struct sk_buff *nskb; |
228 | ||
c08b1a1d | 229 | /* Ignore socket without the flag set */ |
c85be545 | 230 | if (!hci_sock_test_flag(sk, flag)) |
d7f72f61 MH |
231 | continue; |
232 | ||
c08b1a1d MH |
233 | /* Skip the original socket */ |
234 | if (sk == skip_sk) | |
17711c62 MH |
235 | continue; |
236 | ||
237 | if (sk->sk_state != BT_BOUND) | |
238 | continue; | |
239 | ||
240 | if (hci_pi(sk)->channel != channel) | |
241 | continue; | |
242 | ||
243 | nskb = skb_clone(skb, GFP_ATOMIC); | |
244 | if (!nskb) | |
245 | continue; | |
246 | ||
247 | if (sock_queue_rcv_skb(sk, nskb)) | |
248 | kfree_skb(nskb); | |
249 | } | |
250 | ||
251 | read_unlock(&hci_sk_list.lock); | |
252 | } | |
253 | ||
cd82e61c MH |
254 | /* Send frame to monitor socket */ |
255 | void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb) | |
256 | { | |
cd82e61c | 257 | struct sk_buff *skb_copy = NULL; |
2b531294 | 258 | struct hci_mon_hdr *hdr; |
cd82e61c MH |
259 | __le16 opcode; |
260 | ||
261 | if (!atomic_read(&monitor_promisc)) | |
262 | return; | |
263 | ||
264 | BT_DBG("hdev %p len %d", hdev, skb->len); | |
265 | ||
d79f34e3 | 266 | switch (hci_skb_pkt_type(skb)) { |
cd82e61c | 267 | case HCI_COMMAND_PKT: |
dcf4adbf | 268 | opcode = cpu_to_le16(HCI_MON_COMMAND_PKT); |
cd82e61c MH |
269 | break; |
270 | case HCI_EVENT_PKT: | |
dcf4adbf | 271 | opcode = cpu_to_le16(HCI_MON_EVENT_PKT); |
cd82e61c MH |
272 | break; |
273 | case HCI_ACLDATA_PKT: | |
274 | if (bt_cb(skb)->incoming) | |
dcf4adbf | 275 | opcode = cpu_to_le16(HCI_MON_ACL_RX_PKT); |
cd82e61c | 276 | else |
dcf4adbf | 277 | opcode = cpu_to_le16(HCI_MON_ACL_TX_PKT); |
cd82e61c MH |
278 | break; |
279 | case HCI_SCODATA_PKT: | |
280 | if (bt_cb(skb)->incoming) | |
dcf4adbf | 281 | opcode = cpu_to_le16(HCI_MON_SCO_RX_PKT); |
cd82e61c | 282 | else |
dcf4adbf | 283 | opcode = cpu_to_le16(HCI_MON_SCO_TX_PKT); |
cd82e61c | 284 | break; |
e875ff84 MH |
285 | case HCI_DIAG_PKT: |
286 | opcode = cpu_to_le16(HCI_MON_VENDOR_DIAG); | |
287 | break; | |
cd82e61c MH |
288 | default: |
289 | return; | |
290 | } | |
291 | ||
2b531294 MH |
292 | /* Create a private copy with headroom */ |
293 | skb_copy = __pskb_copy_fclone(skb, HCI_MON_HDR_SIZE, GFP_ATOMIC, true); | |
294 | if (!skb_copy) | |
295 | return; | |
296 | ||
297 | /* Put header before the data */ | |
8528d3f7 | 298 | hdr = (void *)skb_push(skb_copy, HCI_MON_HDR_SIZE); |
2b531294 MH |
299 | hdr->opcode = opcode; |
300 | hdr->index = cpu_to_le16(hdev->id); | |
301 | hdr->len = cpu_to_le16(skb->len); | |
302 | ||
c08b1a1d MH |
303 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb_copy, |
304 | HCI_SOCK_TRUSTED, NULL); | |
cd82e61c MH |
305 | kfree_skb(skb_copy); |
306 | } | |
307 | ||
cd82e61c MH |
308 | static struct sk_buff *create_monitor_event(struct hci_dev *hdev, int event) |
309 | { | |
310 | struct hci_mon_hdr *hdr; | |
311 | struct hci_mon_new_index *ni; | |
6c566dd5 | 312 | struct hci_mon_index_info *ii; |
cd82e61c MH |
313 | struct sk_buff *skb; |
314 | __le16 opcode; | |
315 | ||
316 | switch (event) { | |
317 | case HCI_DEV_REG: | |
318 | skb = bt_skb_alloc(HCI_MON_NEW_INDEX_SIZE, GFP_ATOMIC); | |
319 | if (!skb) | |
320 | return NULL; | |
321 | ||
6c566dd5 | 322 | ni = (void *)skb_put(skb, HCI_MON_NEW_INDEX_SIZE); |
cd82e61c MH |
323 | ni->type = hdev->dev_type; |
324 | ni->bus = hdev->bus; | |
325 | bacpy(&ni->bdaddr, &hdev->bdaddr); | |
326 | memcpy(ni->name, hdev->name, 8); | |
327 | ||
dcf4adbf | 328 | opcode = cpu_to_le16(HCI_MON_NEW_INDEX); |
cd82e61c MH |
329 | break; |
330 | ||
331 | case HCI_DEV_UNREG: | |
332 | skb = bt_skb_alloc(0, GFP_ATOMIC); | |
333 | if (!skb) | |
334 | return NULL; | |
335 | ||
dcf4adbf | 336 | opcode = cpu_to_le16(HCI_MON_DEL_INDEX); |
cd82e61c MH |
337 | break; |
338 | ||
e131d74a MH |
339 | case HCI_DEV_SETUP: |
340 | if (hdev->manufacturer == 0xffff) | |
341 | return NULL; | |
342 | ||
343 | /* fall through */ | |
344 | ||
6c566dd5 MH |
345 | case HCI_DEV_UP: |
346 | skb = bt_skb_alloc(HCI_MON_INDEX_INFO_SIZE, GFP_ATOMIC); | |
347 | if (!skb) | |
348 | return NULL; | |
349 | ||
350 | ii = (void *)skb_put(skb, HCI_MON_INDEX_INFO_SIZE); | |
351 | bacpy(&ii->bdaddr, &hdev->bdaddr); | |
352 | ii->manufacturer = cpu_to_le16(hdev->manufacturer); | |
353 | ||
354 | opcode = cpu_to_le16(HCI_MON_INDEX_INFO); | |
355 | break; | |
356 | ||
22db3cbc MH |
357 | case HCI_DEV_OPEN: |
358 | skb = bt_skb_alloc(0, GFP_ATOMIC); | |
359 | if (!skb) | |
360 | return NULL; | |
361 | ||
362 | opcode = cpu_to_le16(HCI_MON_OPEN_INDEX); | |
363 | break; | |
364 | ||
365 | case HCI_DEV_CLOSE: | |
366 | skb = bt_skb_alloc(0, GFP_ATOMIC); | |
367 | if (!skb) | |
368 | return NULL; | |
369 | ||
370 | opcode = cpu_to_le16(HCI_MON_CLOSE_INDEX); | |
371 | break; | |
372 | ||
cd82e61c MH |
373 | default: |
374 | return NULL; | |
375 | } | |
376 | ||
377 | __net_timestamp(skb); | |
378 | ||
8528d3f7 | 379 | hdr = (void *)skb_push(skb, HCI_MON_HDR_SIZE); |
cd82e61c MH |
380 | hdr->opcode = opcode; |
381 | hdr->index = cpu_to_le16(hdev->id); | |
382 | hdr->len = cpu_to_le16(skb->len - HCI_MON_HDR_SIZE); | |
383 | ||
384 | return skb; | |
385 | } | |
386 | ||
787b306c JB |
387 | static void __printf(2, 3) |
388 | send_monitor_note(struct sock *sk, const char *fmt, ...) | |
dd31506d | 389 | { |
787b306c | 390 | size_t len; |
dd31506d MH |
391 | struct hci_mon_hdr *hdr; |
392 | struct sk_buff *skb; | |
787b306c JB |
393 | va_list args; |
394 | ||
395 | va_start(args, fmt); | |
396 | len = vsnprintf(NULL, 0, fmt, args); | |
397 | va_end(args); | |
dd31506d MH |
398 | |
399 | skb = bt_skb_alloc(len + 1, GFP_ATOMIC); | |
400 | if (!skb) | |
401 | return; | |
402 | ||
787b306c JB |
403 | va_start(args, fmt); |
404 | vsprintf(skb_put(skb, len), fmt, args); | |
405 | *skb_put(skb, 1) = 0; | |
406 | va_end(args); | |
dd31506d MH |
407 | |
408 | __net_timestamp(skb); | |
409 | ||
410 | hdr = (void *)skb_push(skb, HCI_MON_HDR_SIZE); | |
411 | hdr->opcode = cpu_to_le16(HCI_MON_SYSTEM_NOTE); | |
412 | hdr->index = cpu_to_le16(HCI_DEV_NONE); | |
413 | hdr->len = cpu_to_le16(skb->len - HCI_MON_HDR_SIZE); | |
414 | ||
415 | if (sock_queue_rcv_skb(sk, skb)) | |
416 | kfree_skb(skb); | |
417 | } | |
418 | ||
cd82e61c MH |
419 | static void send_monitor_replay(struct sock *sk) |
420 | { | |
421 | struct hci_dev *hdev; | |
422 | ||
423 | read_lock(&hci_dev_list_lock); | |
424 | ||
425 | list_for_each_entry(hdev, &hci_dev_list, list) { | |
426 | struct sk_buff *skb; | |
427 | ||
428 | skb = create_monitor_event(hdev, HCI_DEV_REG); | |
429 | if (!skb) | |
430 | continue; | |
431 | ||
432 | if (sock_queue_rcv_skb(sk, skb)) | |
433 | kfree_skb(skb); | |
22db3cbc MH |
434 | |
435 | if (!test_bit(HCI_RUNNING, &hdev->flags)) | |
436 | continue; | |
437 | ||
438 | skb = create_monitor_event(hdev, HCI_DEV_OPEN); | |
439 | if (!skb) | |
440 | continue; | |
441 | ||
442 | if (sock_queue_rcv_skb(sk, skb)) | |
443 | kfree_skb(skb); | |
6c566dd5 | 444 | |
e131d74a MH |
445 | if (test_bit(HCI_UP, &hdev->flags)) |
446 | skb = create_monitor_event(hdev, HCI_DEV_UP); | |
447 | else if (hci_dev_test_flag(hdev, HCI_SETUP)) | |
448 | skb = create_monitor_event(hdev, HCI_DEV_SETUP); | |
449 | else | |
450 | skb = NULL; | |
6c566dd5 | 451 | |
e131d74a MH |
452 | if (skb) { |
453 | if (sock_queue_rcv_skb(sk, skb)) | |
454 | kfree_skb(skb); | |
455 | } | |
cd82e61c MH |
456 | } |
457 | ||
458 | read_unlock(&hci_dev_list_lock); | |
459 | } | |
460 | ||
040030ef MH |
461 | /* Generate internal stack event */ |
462 | static void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data) | |
463 | { | |
464 | struct hci_event_hdr *hdr; | |
465 | struct hci_ev_stack_internal *ev; | |
466 | struct sk_buff *skb; | |
467 | ||
468 | skb = bt_skb_alloc(HCI_EVENT_HDR_SIZE + sizeof(*ev) + dlen, GFP_ATOMIC); | |
469 | if (!skb) | |
470 | return; | |
471 | ||
8528d3f7 | 472 | hdr = (void *)skb_put(skb, HCI_EVENT_HDR_SIZE); |
040030ef MH |
473 | hdr->evt = HCI_EV_STACK_INTERNAL; |
474 | hdr->plen = sizeof(*ev) + dlen; | |
475 | ||
8528d3f7 | 476 | ev = (void *)skb_put(skb, sizeof(*ev) + dlen); |
040030ef MH |
477 | ev->type = type; |
478 | memcpy(ev->data, data, dlen); | |
479 | ||
480 | bt_cb(skb)->incoming = 1; | |
481 | __net_timestamp(skb); | |
482 | ||
d79f34e3 | 483 | hci_skb_pkt_type(skb) = HCI_EVENT_PKT; |
040030ef MH |
484 | hci_send_to_sock(hdev, skb); |
485 | kfree_skb(skb); | |
486 | } | |
487 | ||
488 | void hci_sock_dev_event(struct hci_dev *hdev, int event) | |
489 | { | |
040030ef MH |
490 | BT_DBG("hdev %s event %d", hdev->name, event); |
491 | ||
cd82e61c MH |
492 | if (atomic_read(&monitor_promisc)) { |
493 | struct sk_buff *skb; | |
494 | ||
ed1b28a4 | 495 | /* Send event to monitor */ |
cd82e61c MH |
496 | skb = create_monitor_event(hdev, event); |
497 | if (skb) { | |
c08b1a1d MH |
498 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, |
499 | HCI_SOCK_TRUSTED, NULL); | |
cd82e61c MH |
500 | kfree_skb(skb); |
501 | } | |
502 | } | |
503 | ||
ed1b28a4 MH |
504 | if (event <= HCI_DEV_DOWN) { |
505 | struct hci_ev_si_device ev; | |
506 | ||
507 | /* Send event to sockets */ | |
508 | ev.event = event; | |
509 | ev.dev_id = hdev->id; | |
510 | hci_si_event(NULL, HCI_EV_SI_DEVICE, sizeof(ev), &ev); | |
511 | } | |
040030ef MH |
512 | |
513 | if (event == HCI_DEV_UNREG) { | |
514 | struct sock *sk; | |
040030ef MH |
515 | |
516 | /* Detach sockets from device */ | |
517 | read_lock(&hci_sk_list.lock); | |
b67bfe0d | 518 | sk_for_each(sk, &hci_sk_list.head) { |
040030ef MH |
519 | bh_lock_sock_nested(sk); |
520 | if (hci_pi(sk)->hdev == hdev) { | |
521 | hci_pi(sk)->hdev = NULL; | |
522 | sk->sk_err = EPIPE; | |
523 | sk->sk_state = BT_OPEN; | |
524 | sk->sk_state_change(sk); | |
525 | ||
526 | hci_dev_put(hdev); | |
527 | } | |
528 | bh_unlock_sock(sk); | |
529 | } | |
530 | read_unlock(&hci_sk_list.lock); | |
531 | } | |
532 | } | |
533 | ||
801c1e8d JH |
534 | static struct hci_mgmt_chan *__hci_mgmt_chan_find(unsigned short channel) |
535 | { | |
536 | struct hci_mgmt_chan *c; | |
537 | ||
538 | list_for_each_entry(c, &mgmt_chan_list, list) { | |
539 | if (c->channel == channel) | |
540 | return c; | |
541 | } | |
542 | ||
543 | return NULL; | |
544 | } | |
545 | ||
546 | static struct hci_mgmt_chan *hci_mgmt_chan_find(unsigned short channel) | |
547 | { | |
548 | struct hci_mgmt_chan *c; | |
549 | ||
550 | mutex_lock(&mgmt_chan_list_lock); | |
551 | c = __hci_mgmt_chan_find(channel); | |
552 | mutex_unlock(&mgmt_chan_list_lock); | |
553 | ||
554 | return c; | |
555 | } | |
556 | ||
557 | int hci_mgmt_chan_register(struct hci_mgmt_chan *c) | |
558 | { | |
559 | if (c->channel < HCI_CHANNEL_CONTROL) | |
560 | return -EINVAL; | |
561 | ||
562 | mutex_lock(&mgmt_chan_list_lock); | |
563 | if (__hci_mgmt_chan_find(c->channel)) { | |
564 | mutex_unlock(&mgmt_chan_list_lock); | |
565 | return -EALREADY; | |
566 | } | |
567 | ||
568 | list_add_tail(&c->list, &mgmt_chan_list); | |
569 | ||
570 | mutex_unlock(&mgmt_chan_list_lock); | |
571 | ||
572 | return 0; | |
573 | } | |
574 | EXPORT_SYMBOL(hci_mgmt_chan_register); | |
575 | ||
576 | void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c) | |
577 | { | |
578 | mutex_lock(&mgmt_chan_list_lock); | |
579 | list_del(&c->list); | |
580 | mutex_unlock(&mgmt_chan_list_lock); | |
581 | } | |
582 | EXPORT_SYMBOL(hci_mgmt_chan_unregister); | |
583 | ||
1da177e4 LT |
584 | static int hci_sock_release(struct socket *sock) |
585 | { | |
586 | struct sock *sk = sock->sk; | |
7b005bd3 | 587 | struct hci_dev *hdev; |
1da177e4 LT |
588 | |
589 | BT_DBG("sock %p sk %p", sock, sk); | |
590 | ||
591 | if (!sk) | |
592 | return 0; | |
593 | ||
7b005bd3 MH |
594 | hdev = hci_pi(sk)->hdev; |
595 | ||
cd82e61c MH |
596 | if (hci_pi(sk)->channel == HCI_CHANNEL_MONITOR) |
597 | atomic_dec(&monitor_promisc); | |
598 | ||
1da177e4 LT |
599 | bt_sock_unlink(&hci_sk_list, sk); |
600 | ||
601 | if (hdev) { | |
23500189 | 602 | if (hci_pi(sk)->channel == HCI_CHANNEL_USER) { |
6b3cc1db SF |
603 | /* When releasing an user channel exclusive access, |
604 | * call hci_dev_do_close directly instead of calling | |
605 | * hci_dev_close to ensure the exclusive access will | |
606 | * be released and the controller brought back down. | |
607 | * | |
608 | * The checking of HCI_AUTO_OFF is not needed in this | |
609 | * case since it will have been cleared already when | |
610 | * opening the user channel. | |
611 | */ | |
612 | hci_dev_do_close(hdev); | |
9380f9ea LP |
613 | hci_dev_clear_flag(hdev, HCI_USER_CHANNEL); |
614 | mgmt_index_added(hdev); | |
23500189 MH |
615 | } |
616 | ||
1da177e4 LT |
617 | atomic_dec(&hdev->promisc); |
618 | hci_dev_put(hdev); | |
619 | } | |
620 | ||
621 | sock_orphan(sk); | |
622 | ||
623 | skb_queue_purge(&sk->sk_receive_queue); | |
624 | skb_queue_purge(&sk->sk_write_queue); | |
625 | ||
626 | sock_put(sk); | |
627 | return 0; | |
628 | } | |
629 | ||
b2a66aad | 630 | static int hci_sock_blacklist_add(struct hci_dev *hdev, void __user *arg) |
f0358568 JH |
631 | { |
632 | bdaddr_t bdaddr; | |
5e762444 | 633 | int err; |
f0358568 JH |
634 | |
635 | if (copy_from_user(&bdaddr, arg, sizeof(bdaddr))) | |
636 | return -EFAULT; | |
637 | ||
09fd0de5 | 638 | hci_dev_lock(hdev); |
5e762444 | 639 | |
dcc36c16 | 640 | err = hci_bdaddr_list_add(&hdev->blacklist, &bdaddr, BDADDR_BREDR); |
5e762444 | 641 | |
09fd0de5 | 642 | hci_dev_unlock(hdev); |
5e762444 AJ |
643 | |
644 | return err; | |
f0358568 JH |
645 | } |
646 | ||
b2a66aad | 647 | static int hci_sock_blacklist_del(struct hci_dev *hdev, void __user *arg) |
f0358568 JH |
648 | { |
649 | bdaddr_t bdaddr; | |
5e762444 | 650 | int err; |
f0358568 JH |
651 | |
652 | if (copy_from_user(&bdaddr, arg, sizeof(bdaddr))) | |
653 | return -EFAULT; | |
654 | ||
09fd0de5 | 655 | hci_dev_lock(hdev); |
5e762444 | 656 | |
dcc36c16 | 657 | err = hci_bdaddr_list_del(&hdev->blacklist, &bdaddr, BDADDR_BREDR); |
5e762444 | 658 | |
09fd0de5 | 659 | hci_dev_unlock(hdev); |
5e762444 AJ |
660 | |
661 | return err; | |
f0358568 JH |
662 | } |
663 | ||
8e87d142 | 664 | /* Ioctls that require bound socket */ |
6039aa73 GP |
665 | static int hci_sock_bound_ioctl(struct sock *sk, unsigned int cmd, |
666 | unsigned long arg) | |
1da177e4 LT |
667 | { |
668 | struct hci_dev *hdev = hci_pi(sk)->hdev; | |
669 | ||
670 | if (!hdev) | |
671 | return -EBADFD; | |
672 | ||
d7a5a11d | 673 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) |
0736cfa8 MH |
674 | return -EBUSY; |
675 | ||
d7a5a11d | 676 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
fee746b0 MH |
677 | return -EOPNOTSUPP; |
678 | ||
5b69bef5 MH |
679 | if (hdev->dev_type != HCI_BREDR) |
680 | return -EOPNOTSUPP; | |
681 | ||
1da177e4 LT |
682 | switch (cmd) { |
683 | case HCISETRAW: | |
684 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 685 | return -EPERM; |
db596681 | 686 | return -EOPNOTSUPP; |
1da177e4 | 687 | |
1da177e4 | 688 | case HCIGETCONNINFO: |
8528d3f7 | 689 | return hci_get_conn_info(hdev, (void __user *)arg); |
40be492f MH |
690 | |
691 | case HCIGETAUTHINFO: | |
8528d3f7 | 692 | return hci_get_auth_info(hdev, (void __user *)arg); |
1da177e4 | 693 | |
f0358568 JH |
694 | case HCIBLOCKADDR: |
695 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 696 | return -EPERM; |
8528d3f7 | 697 | return hci_sock_blacklist_add(hdev, (void __user *)arg); |
f0358568 JH |
698 | |
699 | case HCIUNBLOCKADDR: | |
700 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 701 | return -EPERM; |
8528d3f7 | 702 | return hci_sock_blacklist_del(hdev, (void __user *)arg); |
1da177e4 | 703 | } |
0736cfa8 | 704 | |
324d36ed | 705 | return -ENOIOCTLCMD; |
1da177e4 LT |
706 | } |
707 | ||
8fc9ced3 GP |
708 | static int hci_sock_ioctl(struct socket *sock, unsigned int cmd, |
709 | unsigned long arg) | |
1da177e4 | 710 | { |
8528d3f7 | 711 | void __user *argp = (void __user *)arg; |
0736cfa8 | 712 | struct sock *sk = sock->sk; |
1da177e4 LT |
713 | int err; |
714 | ||
715 | BT_DBG("cmd %x arg %lx", cmd, arg); | |
716 | ||
c1c4f956 MH |
717 | lock_sock(sk); |
718 | ||
719 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) { | |
720 | err = -EBADFD; | |
721 | goto done; | |
722 | } | |
723 | ||
724 | release_sock(sk); | |
725 | ||
1da177e4 LT |
726 | switch (cmd) { |
727 | case HCIGETDEVLIST: | |
728 | return hci_get_dev_list(argp); | |
729 | ||
730 | case HCIGETDEVINFO: | |
731 | return hci_get_dev_info(argp); | |
732 | ||
733 | case HCIGETCONNLIST: | |
734 | return hci_get_conn_list(argp); | |
735 | ||
736 | case HCIDEVUP: | |
737 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 738 | return -EPERM; |
1da177e4 LT |
739 | return hci_dev_open(arg); |
740 | ||
741 | case HCIDEVDOWN: | |
742 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 743 | return -EPERM; |
1da177e4 LT |
744 | return hci_dev_close(arg); |
745 | ||
746 | case HCIDEVRESET: | |
747 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 748 | return -EPERM; |
1da177e4 LT |
749 | return hci_dev_reset(arg); |
750 | ||
751 | case HCIDEVRESTAT: | |
752 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 753 | return -EPERM; |
1da177e4 LT |
754 | return hci_dev_reset_stat(arg); |
755 | ||
756 | case HCISETSCAN: | |
757 | case HCISETAUTH: | |
758 | case HCISETENCRYPT: | |
759 | case HCISETPTYPE: | |
760 | case HCISETLINKPOL: | |
761 | case HCISETLINKMODE: | |
762 | case HCISETACLMTU: | |
763 | case HCISETSCOMTU: | |
764 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 765 | return -EPERM; |
1da177e4 LT |
766 | return hci_dev_cmd(cmd, argp); |
767 | ||
768 | case HCIINQUIRY: | |
769 | return hci_inquiry(argp); | |
1da177e4 | 770 | } |
c1c4f956 MH |
771 | |
772 | lock_sock(sk); | |
773 | ||
774 | err = hci_sock_bound_ioctl(sk, cmd, arg); | |
775 | ||
776 | done: | |
777 | release_sock(sk); | |
778 | return err; | |
1da177e4 LT |
779 | } |
780 | ||
8fc9ced3 GP |
781 | static int hci_sock_bind(struct socket *sock, struct sockaddr *addr, |
782 | int addr_len) | |
1da177e4 | 783 | { |
0381101f | 784 | struct sockaddr_hci haddr; |
1da177e4 LT |
785 | struct sock *sk = sock->sk; |
786 | struct hci_dev *hdev = NULL; | |
0381101f | 787 | int len, err = 0; |
1da177e4 LT |
788 | |
789 | BT_DBG("sock %p sk %p", sock, sk); | |
790 | ||
0381101f JH |
791 | if (!addr) |
792 | return -EINVAL; | |
793 | ||
794 | memset(&haddr, 0, sizeof(haddr)); | |
795 | len = min_t(unsigned int, sizeof(haddr), addr_len); | |
796 | memcpy(&haddr, addr, len); | |
797 | ||
798 | if (haddr.hci_family != AF_BLUETOOTH) | |
799 | return -EINVAL; | |
800 | ||
1da177e4 LT |
801 | lock_sock(sk); |
802 | ||
7cc2ade2 | 803 | if (sk->sk_state == BT_BOUND) { |
1da177e4 LT |
804 | err = -EALREADY; |
805 | goto done; | |
806 | } | |
807 | ||
7cc2ade2 MH |
808 | switch (haddr.hci_channel) { |
809 | case HCI_CHANNEL_RAW: | |
810 | if (hci_pi(sk)->hdev) { | |
811 | err = -EALREADY; | |
1da177e4 LT |
812 | goto done; |
813 | } | |
814 | ||
7cc2ade2 MH |
815 | if (haddr.hci_dev != HCI_DEV_NONE) { |
816 | hdev = hci_dev_get(haddr.hci_dev); | |
817 | if (!hdev) { | |
818 | err = -ENODEV; | |
819 | goto done; | |
820 | } | |
821 | ||
822 | atomic_inc(&hdev->promisc); | |
823 | } | |
824 | ||
825 | hci_pi(sk)->hdev = hdev; | |
826 | break; | |
827 | ||
23500189 MH |
828 | case HCI_CHANNEL_USER: |
829 | if (hci_pi(sk)->hdev) { | |
830 | err = -EALREADY; | |
831 | goto done; | |
832 | } | |
833 | ||
834 | if (haddr.hci_dev == HCI_DEV_NONE) { | |
835 | err = -EINVAL; | |
836 | goto done; | |
837 | } | |
838 | ||
10a8b86f | 839 | if (!capable(CAP_NET_ADMIN)) { |
23500189 MH |
840 | err = -EPERM; |
841 | goto done; | |
842 | } | |
843 | ||
844 | hdev = hci_dev_get(haddr.hci_dev); | |
845 | if (!hdev) { | |
846 | err = -ENODEV; | |
847 | goto done; | |
848 | } | |
849 | ||
781f899f | 850 | if (test_bit(HCI_INIT, &hdev->flags) || |
d7a5a11d | 851 | hci_dev_test_flag(hdev, HCI_SETUP) || |
781f899f MH |
852 | hci_dev_test_flag(hdev, HCI_CONFIG) || |
853 | (!hci_dev_test_flag(hdev, HCI_AUTO_OFF) && | |
854 | test_bit(HCI_UP, &hdev->flags))) { | |
23500189 MH |
855 | err = -EBUSY; |
856 | hci_dev_put(hdev); | |
857 | goto done; | |
858 | } | |
859 | ||
238be788 | 860 | if (hci_dev_test_and_set_flag(hdev, HCI_USER_CHANNEL)) { |
23500189 MH |
861 | err = -EUSERS; |
862 | hci_dev_put(hdev); | |
863 | goto done; | |
864 | } | |
865 | ||
0602a8ad | 866 | mgmt_index_removed(hdev); |
23500189 MH |
867 | |
868 | err = hci_dev_open(hdev->id); | |
869 | if (err) { | |
781f899f MH |
870 | if (err == -EALREADY) { |
871 | /* In case the transport is already up and | |
872 | * running, clear the error here. | |
873 | * | |
874 | * This can happen when opening an user | |
875 | * channel and HCI_AUTO_OFF grace period | |
876 | * is still active. | |
877 | */ | |
878 | err = 0; | |
879 | } else { | |
880 | hci_dev_clear_flag(hdev, HCI_USER_CHANNEL); | |
881 | mgmt_index_added(hdev); | |
882 | hci_dev_put(hdev); | |
883 | goto done; | |
884 | } | |
23500189 MH |
885 | } |
886 | ||
887 | atomic_inc(&hdev->promisc); | |
888 | ||
889 | hci_pi(sk)->hdev = hdev; | |
890 | break; | |
891 | ||
cd82e61c MH |
892 | case HCI_CHANNEL_MONITOR: |
893 | if (haddr.hci_dev != HCI_DEV_NONE) { | |
894 | err = -EINVAL; | |
895 | goto done; | |
896 | } | |
897 | ||
898 | if (!capable(CAP_NET_RAW)) { | |
899 | err = -EPERM; | |
900 | goto done; | |
901 | } | |
902 | ||
50ebc055 MH |
903 | /* The monitor interface is restricted to CAP_NET_RAW |
904 | * capabilities and with that implicitly trusted. | |
905 | */ | |
906 | hci_sock_set_flag(sk, HCI_SOCK_TRUSTED); | |
907 | ||
787b306c JB |
908 | send_monitor_note(sk, "Linux version %s (%s)", |
909 | init_utsname()->release, | |
910 | init_utsname()->machine); | |
911 | send_monitor_note(sk, "Bluetooth subsystem version %s", | |
912 | BT_SUBSYS_VERSION); | |
cd82e61c MH |
913 | send_monitor_replay(sk); |
914 | ||
915 | atomic_inc(&monitor_promisc); | |
916 | break; | |
917 | ||
ac714949 MH |
918 | case HCI_CHANNEL_LOGGING: |
919 | if (haddr.hci_dev != HCI_DEV_NONE) { | |
920 | err = -EINVAL; | |
921 | goto done; | |
922 | } | |
923 | ||
924 | if (!capable(CAP_NET_ADMIN)) { | |
925 | err = -EPERM; | |
926 | goto done; | |
927 | } | |
928 | break; | |
929 | ||
7cc2ade2 | 930 | default: |
801c1e8d JH |
931 | if (!hci_mgmt_chan_find(haddr.hci_channel)) { |
932 | err = -EINVAL; | |
933 | goto done; | |
934 | } | |
935 | ||
936 | if (haddr.hci_dev != HCI_DEV_NONE) { | |
937 | err = -EINVAL; | |
938 | goto done; | |
939 | } | |
940 | ||
1195fbb8 MH |
941 | /* Users with CAP_NET_ADMIN capabilities are allowed |
942 | * access to all management commands and events. For | |
943 | * untrusted users the interface is restricted and | |
944 | * also only untrusted events are sent. | |
50ebc055 | 945 | */ |
1195fbb8 MH |
946 | if (capable(CAP_NET_ADMIN)) |
947 | hci_sock_set_flag(sk, HCI_SOCK_TRUSTED); | |
50ebc055 | 948 | |
f9207338 MH |
949 | /* At the moment the index and unconfigured index events |
950 | * are enabled unconditionally. Setting them on each | |
951 | * socket when binding keeps this functionality. They | |
952 | * however might be cleared later and then sending of these | |
953 | * events will be disabled, but that is then intentional. | |
f6b7712e MH |
954 | * |
955 | * This also enables generic events that are safe to be | |
956 | * received by untrusted users. Example for such events | |
957 | * are changes to settings, class of device, name etc. | |
f9207338 MH |
958 | */ |
959 | if (haddr.hci_channel == HCI_CHANNEL_CONTROL) { | |
960 | hci_sock_set_flag(sk, HCI_MGMT_INDEX_EVENTS); | |
961 | hci_sock_set_flag(sk, HCI_MGMT_UNCONF_INDEX_EVENTS); | |
f6b7712e | 962 | hci_sock_set_flag(sk, HCI_MGMT_GENERIC_EVENTS); |
f9207338 | 963 | } |
801c1e8d | 964 | break; |
1da177e4 LT |
965 | } |
966 | ||
7cc2ade2 | 967 | |
0381101f | 968 | hci_pi(sk)->channel = haddr.hci_channel; |
1da177e4 LT |
969 | sk->sk_state = BT_BOUND; |
970 | ||
971 | done: | |
972 | release_sock(sk); | |
973 | return err; | |
974 | } | |
975 | ||
8fc9ced3 GP |
976 | static int hci_sock_getname(struct socket *sock, struct sockaddr *addr, |
977 | int *addr_len, int peer) | |
1da177e4 | 978 | { |
8528d3f7 | 979 | struct sockaddr_hci *haddr = (struct sockaddr_hci *)addr; |
1da177e4 | 980 | struct sock *sk = sock->sk; |
9d4b68b2 MH |
981 | struct hci_dev *hdev; |
982 | int err = 0; | |
1da177e4 LT |
983 | |
984 | BT_DBG("sock %p sk %p", sock, sk); | |
985 | ||
06f43cbc MH |
986 | if (peer) |
987 | return -EOPNOTSUPP; | |
988 | ||
1da177e4 LT |
989 | lock_sock(sk); |
990 | ||
9d4b68b2 MH |
991 | hdev = hci_pi(sk)->hdev; |
992 | if (!hdev) { | |
993 | err = -EBADFD; | |
994 | goto done; | |
995 | } | |
996 | ||
1da177e4 LT |
997 | *addr_len = sizeof(*haddr); |
998 | haddr->hci_family = AF_BLUETOOTH; | |
7b005bd3 | 999 | haddr->hci_dev = hdev->id; |
9d4b68b2 | 1000 | haddr->hci_channel= hci_pi(sk)->channel; |
1da177e4 | 1001 | |
9d4b68b2 | 1002 | done: |
1da177e4 | 1003 | release_sock(sk); |
9d4b68b2 | 1004 | return err; |
1da177e4 LT |
1005 | } |
1006 | ||
6039aa73 GP |
1007 | static void hci_sock_cmsg(struct sock *sk, struct msghdr *msg, |
1008 | struct sk_buff *skb) | |
1da177e4 LT |
1009 | { |
1010 | __u32 mask = hci_pi(sk)->cmsg_mask; | |
1011 | ||
0d48d939 MH |
1012 | if (mask & HCI_CMSG_DIR) { |
1013 | int incoming = bt_cb(skb)->incoming; | |
8fc9ced3 GP |
1014 | put_cmsg(msg, SOL_HCI, HCI_CMSG_DIR, sizeof(incoming), |
1015 | &incoming); | |
0d48d939 | 1016 | } |
1da177e4 | 1017 | |
a61bbcf2 | 1018 | if (mask & HCI_CMSG_TSTAMP) { |
f6e623a6 JFS |
1019 | #ifdef CONFIG_COMPAT |
1020 | struct compat_timeval ctv; | |
1021 | #endif | |
a61bbcf2 | 1022 | struct timeval tv; |
767c5eb5 MH |
1023 | void *data; |
1024 | int len; | |
a61bbcf2 PM |
1025 | |
1026 | skb_get_timestamp(skb, &tv); | |
767c5eb5 | 1027 | |
1da97f83 DM |
1028 | data = &tv; |
1029 | len = sizeof(tv); | |
1030 | #ifdef CONFIG_COMPAT | |
da88cea1 L |
1031 | if (!COMPAT_USE_64BIT_TIME && |
1032 | (msg->msg_flags & MSG_CMSG_COMPAT)) { | |
767c5eb5 MH |
1033 | ctv.tv_sec = tv.tv_sec; |
1034 | ctv.tv_usec = tv.tv_usec; | |
1035 | data = &ctv; | |
1036 | len = sizeof(ctv); | |
767c5eb5 | 1037 | } |
1da97f83 | 1038 | #endif |
767c5eb5 MH |
1039 | |
1040 | put_cmsg(msg, SOL_HCI, HCI_CMSG_TSTAMP, len, data); | |
a61bbcf2 | 1041 | } |
1da177e4 | 1042 | } |
8e87d142 | 1043 | |
8528d3f7 MH |
1044 | static int hci_sock_recvmsg(struct socket *sock, struct msghdr *msg, |
1045 | size_t len, int flags) | |
1da177e4 LT |
1046 | { |
1047 | int noblock = flags & MSG_DONTWAIT; | |
1048 | struct sock *sk = sock->sk; | |
1049 | struct sk_buff *skb; | |
1050 | int copied, err; | |
1051 | ||
1052 | BT_DBG("sock %p, sk %p", sock, sk); | |
1053 | ||
d94a6104 | 1054 | if (flags & MSG_OOB) |
1da177e4 LT |
1055 | return -EOPNOTSUPP; |
1056 | ||
ac714949 MH |
1057 | if (hci_pi(sk)->channel == HCI_CHANNEL_LOGGING) |
1058 | return -EOPNOTSUPP; | |
1059 | ||
1da177e4 LT |
1060 | if (sk->sk_state == BT_CLOSED) |
1061 | return 0; | |
1062 | ||
70f23020 AE |
1063 | skb = skb_recv_datagram(sk, flags, noblock, &err); |
1064 | if (!skb) | |
1da177e4 LT |
1065 | return err; |
1066 | ||
1da177e4 LT |
1067 | copied = skb->len; |
1068 | if (len < copied) { | |
1069 | msg->msg_flags |= MSG_TRUNC; | |
1070 | copied = len; | |
1071 | } | |
1072 | ||
badff6d0 | 1073 | skb_reset_transport_header(skb); |
51f3d02b | 1074 | err = skb_copy_datagram_msg(skb, 0, msg, copied); |
1da177e4 | 1075 | |
3a208627 MH |
1076 | switch (hci_pi(sk)->channel) { |
1077 | case HCI_CHANNEL_RAW: | |
1078 | hci_sock_cmsg(sk, msg, skb); | |
1079 | break; | |
23500189 | 1080 | case HCI_CHANNEL_USER: |
cd82e61c MH |
1081 | case HCI_CHANNEL_MONITOR: |
1082 | sock_recv_timestamp(msg, sk, skb); | |
1083 | break; | |
801c1e8d JH |
1084 | default: |
1085 | if (hci_mgmt_chan_find(hci_pi(sk)->channel)) | |
1086 | sock_recv_timestamp(msg, sk, skb); | |
1087 | break; | |
3a208627 | 1088 | } |
1da177e4 LT |
1089 | |
1090 | skb_free_datagram(sk, skb); | |
1091 | ||
1092 | return err ? : copied; | |
1093 | } | |
1094 | ||
fa4335d7 JH |
1095 | static int hci_mgmt_cmd(struct hci_mgmt_chan *chan, struct sock *sk, |
1096 | struct msghdr *msg, size_t msglen) | |
1097 | { | |
1098 | void *buf; | |
1099 | u8 *cp; | |
1100 | struct mgmt_hdr *hdr; | |
1101 | u16 opcode, index, len; | |
1102 | struct hci_dev *hdev = NULL; | |
1103 | const struct hci_mgmt_handler *handler; | |
1104 | bool var_len, no_hdev; | |
1105 | int err; | |
1106 | ||
1107 | BT_DBG("got %zu bytes", msglen); | |
1108 | ||
1109 | if (msglen < sizeof(*hdr)) | |
1110 | return -EINVAL; | |
1111 | ||
1112 | buf = kmalloc(msglen, GFP_KERNEL); | |
1113 | if (!buf) | |
1114 | return -ENOMEM; | |
1115 | ||
1116 | if (memcpy_from_msg(buf, msg, msglen)) { | |
1117 | err = -EFAULT; | |
1118 | goto done; | |
1119 | } | |
1120 | ||
1121 | hdr = buf; | |
1122 | opcode = __le16_to_cpu(hdr->opcode); | |
1123 | index = __le16_to_cpu(hdr->index); | |
1124 | len = __le16_to_cpu(hdr->len); | |
1125 | ||
1126 | if (len != msglen - sizeof(*hdr)) { | |
1127 | err = -EINVAL; | |
1128 | goto done; | |
1129 | } | |
1130 | ||
1131 | if (opcode >= chan->handler_count || | |
1132 | chan->handlers[opcode].func == NULL) { | |
1133 | BT_DBG("Unknown op %u", opcode); | |
1134 | err = mgmt_cmd_status(sk, index, opcode, | |
1135 | MGMT_STATUS_UNKNOWN_COMMAND); | |
1136 | goto done; | |
1137 | } | |
1138 | ||
1139 | handler = &chan->handlers[opcode]; | |
1140 | ||
1141 | if (!hci_sock_test_flag(sk, HCI_SOCK_TRUSTED) && | |
1142 | !(handler->flags & HCI_MGMT_UNTRUSTED)) { | |
1143 | err = mgmt_cmd_status(sk, index, opcode, | |
1144 | MGMT_STATUS_PERMISSION_DENIED); | |
1145 | goto done; | |
1146 | } | |
1147 | ||
1148 | if (index != MGMT_INDEX_NONE) { | |
1149 | hdev = hci_dev_get(index); | |
1150 | if (!hdev) { | |
1151 | err = mgmt_cmd_status(sk, index, opcode, | |
1152 | MGMT_STATUS_INVALID_INDEX); | |
1153 | goto done; | |
1154 | } | |
1155 | ||
1156 | if (hci_dev_test_flag(hdev, HCI_SETUP) || | |
1157 | hci_dev_test_flag(hdev, HCI_CONFIG) || | |
1158 | hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { | |
1159 | err = mgmt_cmd_status(sk, index, opcode, | |
1160 | MGMT_STATUS_INVALID_INDEX); | |
1161 | goto done; | |
1162 | } | |
1163 | ||
1164 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && | |
1165 | !(handler->flags & HCI_MGMT_UNCONFIGURED)) { | |
1166 | err = mgmt_cmd_status(sk, index, opcode, | |
1167 | MGMT_STATUS_INVALID_INDEX); | |
1168 | goto done; | |
1169 | } | |
1170 | } | |
1171 | ||
1172 | no_hdev = (handler->flags & HCI_MGMT_NO_HDEV); | |
1173 | if (no_hdev != !hdev) { | |
1174 | err = mgmt_cmd_status(sk, index, opcode, | |
1175 | MGMT_STATUS_INVALID_INDEX); | |
1176 | goto done; | |
1177 | } | |
1178 | ||
1179 | var_len = (handler->flags & HCI_MGMT_VAR_LEN); | |
1180 | if ((var_len && len < handler->data_len) || | |
1181 | (!var_len && len != handler->data_len)) { | |
1182 | err = mgmt_cmd_status(sk, index, opcode, | |
1183 | MGMT_STATUS_INVALID_PARAMS); | |
1184 | goto done; | |
1185 | } | |
1186 | ||
1187 | if (hdev && chan->hdev_init) | |
1188 | chan->hdev_init(sk, hdev); | |
1189 | ||
1190 | cp = buf + sizeof(*hdr); | |
1191 | ||
1192 | err = handler->func(sk, hdev, cp, len); | |
1193 | if (err < 0) | |
1194 | goto done; | |
1195 | ||
1196 | err = msglen; | |
1197 | ||
1198 | done: | |
1199 | if (hdev) | |
1200 | hci_dev_put(hdev); | |
1201 | ||
1202 | kfree(buf); | |
1203 | return err; | |
1204 | } | |
1205 | ||
ac714949 MH |
1206 | static int hci_logging_frame(struct sock *sk, struct msghdr *msg, int len) |
1207 | { | |
1208 | struct hci_mon_hdr *hdr; | |
1209 | struct sk_buff *skb; | |
1210 | struct hci_dev *hdev; | |
1211 | u16 index; | |
1212 | int err; | |
1213 | ||
1214 | /* The logging frame consists at minimum of the standard header, | |
1215 | * the priority byte, the ident length byte and at least one string | |
1216 | * terminator NUL byte. Anything shorter are invalid packets. | |
1217 | */ | |
1218 | if (len < sizeof(*hdr) + 3) | |
1219 | return -EINVAL; | |
1220 | ||
1221 | skb = bt_skb_send_alloc(sk, len, msg->msg_flags & MSG_DONTWAIT, &err); | |
1222 | if (!skb) | |
1223 | return err; | |
1224 | ||
1225 | if (memcpy_from_msg(skb_put(skb, len), msg, len)) { | |
1226 | err = -EFAULT; | |
1227 | goto drop; | |
1228 | } | |
1229 | ||
1230 | hdr = (void *)skb->data; | |
1231 | ||
1232 | if (__le16_to_cpu(hdr->len) != len - sizeof(*hdr)) { | |
1233 | err = -EINVAL; | |
1234 | goto drop; | |
1235 | } | |
1236 | ||
1237 | if (__le16_to_cpu(hdr->opcode) == 0x0000) { | |
1238 | __u8 priority = skb->data[sizeof(*hdr)]; | |
1239 | __u8 ident_len = skb->data[sizeof(*hdr) + 1]; | |
1240 | ||
1241 | /* Only the priorities 0-7 are valid and with that any other | |
1242 | * value results in an invalid packet. | |
1243 | * | |
1244 | * The priority byte is followed by an ident length byte and | |
1245 | * the NUL terminated ident string. Check that the ident | |
1246 | * length is not overflowing the packet and also that the | |
1247 | * ident string itself is NUL terminated. In case the ident | |
1248 | * length is zero, the length value actually doubles as NUL | |
1249 | * terminator identifier. | |
1250 | * | |
1251 | * The message follows the ident string (if present) and | |
1252 | * must be NUL terminated. Otherwise it is not a valid packet. | |
1253 | */ | |
1254 | if (priority > 7 || skb->data[len - 1] != 0x00 || | |
1255 | ident_len > len - sizeof(*hdr) - 3 || | |
1256 | skb->data[sizeof(*hdr) + ident_len + 1] != 0x00) { | |
1257 | err = -EINVAL; | |
1258 | goto drop; | |
1259 | } | |
1260 | } else { | |
1261 | err = -EINVAL; | |
1262 | goto drop; | |
1263 | } | |
1264 | ||
1265 | index = __le16_to_cpu(hdr->index); | |
1266 | ||
1267 | if (index != MGMT_INDEX_NONE) { | |
1268 | hdev = hci_dev_get(index); | |
1269 | if (!hdev) { | |
1270 | err = -ENODEV; | |
1271 | goto drop; | |
1272 | } | |
1273 | } else { | |
1274 | hdev = NULL; | |
1275 | } | |
1276 | ||
1277 | hdr->opcode = cpu_to_le16(HCI_MON_USER_LOGGING); | |
1278 | ||
1279 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, HCI_SOCK_TRUSTED, NULL); | |
1280 | err = len; | |
1281 | ||
1282 | if (hdev) | |
1283 | hci_dev_put(hdev); | |
1284 | ||
1285 | drop: | |
1286 | kfree_skb(skb); | |
1287 | return err; | |
1288 | } | |
1289 | ||
1b784140 YX |
1290 | static int hci_sock_sendmsg(struct socket *sock, struct msghdr *msg, |
1291 | size_t len) | |
1da177e4 LT |
1292 | { |
1293 | struct sock *sk = sock->sk; | |
801c1e8d | 1294 | struct hci_mgmt_chan *chan; |
1da177e4 LT |
1295 | struct hci_dev *hdev; |
1296 | struct sk_buff *skb; | |
1297 | int err; | |
1298 | ||
1299 | BT_DBG("sock %p sk %p", sock, sk); | |
1300 | ||
1301 | if (msg->msg_flags & MSG_OOB) | |
1302 | return -EOPNOTSUPP; | |
1303 | ||
1304 | if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_NOSIGNAL|MSG_ERRQUEUE)) | |
1305 | return -EINVAL; | |
1306 | ||
1307 | if (len < 4 || len > HCI_MAX_FRAME_SIZE) | |
1308 | return -EINVAL; | |
1309 | ||
1310 | lock_sock(sk); | |
1311 | ||
0381101f JH |
1312 | switch (hci_pi(sk)->channel) { |
1313 | case HCI_CHANNEL_RAW: | |
23500189 | 1314 | case HCI_CHANNEL_USER: |
0381101f | 1315 | break; |
cd82e61c MH |
1316 | case HCI_CHANNEL_MONITOR: |
1317 | err = -EOPNOTSUPP; | |
1318 | goto done; | |
ac714949 MH |
1319 | case HCI_CHANNEL_LOGGING: |
1320 | err = hci_logging_frame(sk, msg, len); | |
1321 | goto done; | |
0381101f | 1322 | default: |
801c1e8d JH |
1323 | mutex_lock(&mgmt_chan_list_lock); |
1324 | chan = __hci_mgmt_chan_find(hci_pi(sk)->channel); | |
1325 | if (chan) | |
fa4335d7 | 1326 | err = hci_mgmt_cmd(chan, sk, msg, len); |
801c1e8d JH |
1327 | else |
1328 | err = -EINVAL; | |
1329 | ||
1330 | mutex_unlock(&mgmt_chan_list_lock); | |
0381101f JH |
1331 | goto done; |
1332 | } | |
1333 | ||
70f23020 AE |
1334 | hdev = hci_pi(sk)->hdev; |
1335 | if (!hdev) { | |
1da177e4 LT |
1336 | err = -EBADFD; |
1337 | goto done; | |
1338 | } | |
1339 | ||
7e21addc MH |
1340 | if (!test_bit(HCI_UP, &hdev->flags)) { |
1341 | err = -ENETDOWN; | |
1342 | goto done; | |
1343 | } | |
1344 | ||
70f23020 AE |
1345 | skb = bt_skb_send_alloc(sk, len, msg->msg_flags & MSG_DONTWAIT, &err); |
1346 | if (!skb) | |
1da177e4 LT |
1347 | goto done; |
1348 | ||
6ce8e9ce | 1349 | if (memcpy_from_msg(skb_put(skb, len), msg, len)) { |
1da177e4 LT |
1350 | err = -EFAULT; |
1351 | goto drop; | |
1352 | } | |
1353 | ||
8528d3f7 | 1354 | hci_skb_pkt_type(skb) = skb->data[0]; |
1da177e4 | 1355 | skb_pull(skb, 1); |
1da177e4 | 1356 | |
1bc5ad16 MH |
1357 | if (hci_pi(sk)->channel == HCI_CHANNEL_USER) { |
1358 | /* No permission check is needed for user channel | |
1359 | * since that gets enforced when binding the socket. | |
1360 | * | |
1361 | * However check that the packet type is valid. | |
1362 | */ | |
d79f34e3 MH |
1363 | if (hci_skb_pkt_type(skb) != HCI_COMMAND_PKT && |
1364 | hci_skb_pkt_type(skb) != HCI_ACLDATA_PKT && | |
1365 | hci_skb_pkt_type(skb) != HCI_SCODATA_PKT) { | |
1bc5ad16 MH |
1366 | err = -EINVAL; |
1367 | goto drop; | |
1368 | } | |
1369 | ||
1370 | skb_queue_tail(&hdev->raw_q, skb); | |
1371 | queue_work(hdev->workqueue, &hdev->tx_work); | |
d79f34e3 | 1372 | } else if (hci_skb_pkt_type(skb) == HCI_COMMAND_PKT) { |
83985319 | 1373 | u16 opcode = get_unaligned_le16(skb->data); |
1da177e4 LT |
1374 | u16 ogf = hci_opcode_ogf(opcode); |
1375 | u16 ocf = hci_opcode_ocf(opcode); | |
1376 | ||
1377 | if (((ogf > HCI_SFLT_MAX_OGF) || | |
3bb3c755 GP |
1378 | !hci_test_bit(ocf & HCI_FLT_OCF_BITS, |
1379 | &hci_sec_filter.ocf_mask[ogf])) && | |
1380 | !capable(CAP_NET_RAW)) { | |
1da177e4 LT |
1381 | err = -EPERM; |
1382 | goto drop; | |
1383 | } | |
1384 | ||
1982162b MH |
1385 | /* Since the opcode has already been extracted here, store |
1386 | * a copy of the value for later use by the drivers. | |
1387 | */ | |
1388 | hci_skb_opcode(skb) = opcode; | |
1389 | ||
fee746b0 | 1390 | if (ogf == 0x3f) { |
1da177e4 | 1391 | skb_queue_tail(&hdev->raw_q, skb); |
3eff45ea | 1392 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 1393 | } else { |
49c922bb | 1394 | /* Stand-alone HCI commands must be flagged as |
11714b3d JH |
1395 | * single-command requests. |
1396 | */ | |
44d27137 | 1397 | bt_cb(skb)->hci.req_flags |= HCI_REQ_START; |
11714b3d | 1398 | |
1da177e4 | 1399 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 1400 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
1401 | } |
1402 | } else { | |
1403 | if (!capable(CAP_NET_RAW)) { | |
1404 | err = -EPERM; | |
1405 | goto drop; | |
1406 | } | |
1407 | ||
d79f34e3 MH |
1408 | if (hci_skb_pkt_type(skb) != HCI_ACLDATA_PKT && |
1409 | hci_skb_pkt_type(skb) != HCI_SCODATA_PKT) { | |
bb77543e MH |
1410 | err = -EINVAL; |
1411 | goto drop; | |
1412 | } | |
1413 | ||
1da177e4 | 1414 | skb_queue_tail(&hdev->raw_q, skb); |
3eff45ea | 1415 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 LT |
1416 | } |
1417 | ||
1418 | err = len; | |
1419 | ||
1420 | done: | |
1421 | release_sock(sk); | |
1422 | return err; | |
1423 | ||
1424 | drop: | |
1425 | kfree_skb(skb); | |
1426 | goto done; | |
1427 | } | |
1428 | ||
8fc9ced3 GP |
1429 | static int hci_sock_setsockopt(struct socket *sock, int level, int optname, |
1430 | char __user *optval, unsigned int len) | |
1da177e4 LT |
1431 | { |
1432 | struct hci_ufilter uf = { .opcode = 0 }; | |
1433 | struct sock *sk = sock->sk; | |
1434 | int err = 0, opt = 0; | |
1435 | ||
1436 | BT_DBG("sk %p, opt %d", sk, optname); | |
1437 | ||
1438 | lock_sock(sk); | |
1439 | ||
2f39cdb7 | 1440 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) { |
c2371e80 | 1441 | err = -EBADFD; |
2f39cdb7 MH |
1442 | goto done; |
1443 | } | |
1444 | ||
1da177e4 LT |
1445 | switch (optname) { |
1446 | case HCI_DATA_DIR: | |
1447 | if (get_user(opt, (int __user *)optval)) { | |
1448 | err = -EFAULT; | |
1449 | break; | |
1450 | } | |
1451 | ||
1452 | if (opt) | |
1453 | hci_pi(sk)->cmsg_mask |= HCI_CMSG_DIR; | |
1454 | else | |
1455 | hci_pi(sk)->cmsg_mask &= ~HCI_CMSG_DIR; | |
1456 | break; | |
1457 | ||
1458 | case HCI_TIME_STAMP: | |
1459 | if (get_user(opt, (int __user *)optval)) { | |
1460 | err = -EFAULT; | |
1461 | break; | |
1462 | } | |
1463 | ||
1464 | if (opt) | |
1465 | hci_pi(sk)->cmsg_mask |= HCI_CMSG_TSTAMP; | |
1466 | else | |
1467 | hci_pi(sk)->cmsg_mask &= ~HCI_CMSG_TSTAMP; | |
1468 | break; | |
1469 | ||
1470 | case HCI_FILTER: | |
0878b666 MH |
1471 | { |
1472 | struct hci_filter *f = &hci_pi(sk)->filter; | |
1473 | ||
1474 | uf.type_mask = f->type_mask; | |
1475 | uf.opcode = f->opcode; | |
1476 | uf.event_mask[0] = *((u32 *) f->event_mask + 0); | |
1477 | uf.event_mask[1] = *((u32 *) f->event_mask + 1); | |
1478 | } | |
1479 | ||
1da177e4 LT |
1480 | len = min_t(unsigned int, len, sizeof(uf)); |
1481 | if (copy_from_user(&uf, optval, len)) { | |
1482 | err = -EFAULT; | |
1483 | break; | |
1484 | } | |
1485 | ||
1486 | if (!capable(CAP_NET_RAW)) { | |
1487 | uf.type_mask &= hci_sec_filter.type_mask; | |
1488 | uf.event_mask[0] &= *((u32 *) hci_sec_filter.event_mask + 0); | |
1489 | uf.event_mask[1] &= *((u32 *) hci_sec_filter.event_mask + 1); | |
1490 | } | |
1491 | ||
1492 | { | |
1493 | struct hci_filter *f = &hci_pi(sk)->filter; | |
1494 | ||
1495 | f->type_mask = uf.type_mask; | |
1496 | f->opcode = uf.opcode; | |
1497 | *((u32 *) f->event_mask + 0) = uf.event_mask[0]; | |
1498 | *((u32 *) f->event_mask + 1) = uf.event_mask[1]; | |
1499 | } | |
8e87d142 | 1500 | break; |
1da177e4 LT |
1501 | |
1502 | default: | |
1503 | err = -ENOPROTOOPT; | |
1504 | break; | |
1505 | } | |
1506 | ||
2f39cdb7 | 1507 | done: |
1da177e4 LT |
1508 | release_sock(sk); |
1509 | return err; | |
1510 | } | |
1511 | ||
8fc9ced3 GP |
1512 | static int hci_sock_getsockopt(struct socket *sock, int level, int optname, |
1513 | char __user *optval, int __user *optlen) | |
1da177e4 LT |
1514 | { |
1515 | struct hci_ufilter uf; | |
1516 | struct sock *sk = sock->sk; | |
cedc5469 MH |
1517 | int len, opt, err = 0; |
1518 | ||
1519 | BT_DBG("sk %p, opt %d", sk, optname); | |
1da177e4 LT |
1520 | |
1521 | if (get_user(len, optlen)) | |
1522 | return -EFAULT; | |
1523 | ||
cedc5469 MH |
1524 | lock_sock(sk); |
1525 | ||
1526 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) { | |
c2371e80 | 1527 | err = -EBADFD; |
cedc5469 MH |
1528 | goto done; |
1529 | } | |
1530 | ||
1da177e4 LT |
1531 | switch (optname) { |
1532 | case HCI_DATA_DIR: | |
1533 | if (hci_pi(sk)->cmsg_mask & HCI_CMSG_DIR) | |
1534 | opt = 1; | |
8e87d142 | 1535 | else |
1da177e4 LT |
1536 | opt = 0; |
1537 | ||
1538 | if (put_user(opt, optval)) | |
cedc5469 | 1539 | err = -EFAULT; |
1da177e4 LT |
1540 | break; |
1541 | ||
1542 | case HCI_TIME_STAMP: | |
1543 | if (hci_pi(sk)->cmsg_mask & HCI_CMSG_TSTAMP) | |
1544 | opt = 1; | |
8e87d142 | 1545 | else |
1da177e4 LT |
1546 | opt = 0; |
1547 | ||
1548 | if (put_user(opt, optval)) | |
cedc5469 | 1549 | err = -EFAULT; |
1da177e4 LT |
1550 | break; |
1551 | ||
1552 | case HCI_FILTER: | |
1553 | { | |
1554 | struct hci_filter *f = &hci_pi(sk)->filter; | |
1555 | ||
e15ca9a0 | 1556 | memset(&uf, 0, sizeof(uf)); |
1da177e4 LT |
1557 | uf.type_mask = f->type_mask; |
1558 | uf.opcode = f->opcode; | |
1559 | uf.event_mask[0] = *((u32 *) f->event_mask + 0); | |
1560 | uf.event_mask[1] = *((u32 *) f->event_mask + 1); | |
1561 | } | |
1562 | ||
1563 | len = min_t(unsigned int, len, sizeof(uf)); | |
1564 | if (copy_to_user(optval, &uf, len)) | |
cedc5469 | 1565 | err = -EFAULT; |
1da177e4 LT |
1566 | break; |
1567 | ||
1568 | default: | |
cedc5469 | 1569 | err = -ENOPROTOOPT; |
1da177e4 LT |
1570 | break; |
1571 | } | |
1572 | ||
cedc5469 MH |
1573 | done: |
1574 | release_sock(sk); | |
1575 | return err; | |
1da177e4 LT |
1576 | } |
1577 | ||
90ddc4f0 | 1578 | static const struct proto_ops hci_sock_ops = { |
1da177e4 LT |
1579 | .family = PF_BLUETOOTH, |
1580 | .owner = THIS_MODULE, | |
1581 | .release = hci_sock_release, | |
1582 | .bind = hci_sock_bind, | |
1583 | .getname = hci_sock_getname, | |
1584 | .sendmsg = hci_sock_sendmsg, | |
1585 | .recvmsg = hci_sock_recvmsg, | |
1586 | .ioctl = hci_sock_ioctl, | |
1587 | .poll = datagram_poll, | |
1588 | .listen = sock_no_listen, | |
1589 | .shutdown = sock_no_shutdown, | |
1590 | .setsockopt = hci_sock_setsockopt, | |
1591 | .getsockopt = hci_sock_getsockopt, | |
1592 | .connect = sock_no_connect, | |
1593 | .socketpair = sock_no_socketpair, | |
1594 | .accept = sock_no_accept, | |
1595 | .mmap = sock_no_mmap | |
1596 | }; | |
1597 | ||
1598 | static struct proto hci_sk_proto = { | |
1599 | .name = "HCI", | |
1600 | .owner = THIS_MODULE, | |
1601 | .obj_size = sizeof(struct hci_pinfo) | |
1602 | }; | |
1603 | ||
3f378b68 EP |
1604 | static int hci_sock_create(struct net *net, struct socket *sock, int protocol, |
1605 | int kern) | |
1da177e4 LT |
1606 | { |
1607 | struct sock *sk; | |
1608 | ||
1609 | BT_DBG("sock %p", sock); | |
1610 | ||
1611 | if (sock->type != SOCK_RAW) | |
1612 | return -ESOCKTNOSUPPORT; | |
1613 | ||
1614 | sock->ops = &hci_sock_ops; | |
1615 | ||
11aa9c28 | 1616 | sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &hci_sk_proto, kern); |
1da177e4 LT |
1617 | if (!sk) |
1618 | return -ENOMEM; | |
1619 | ||
1620 | sock_init_data(sock, sk); | |
1621 | ||
1622 | sock_reset_flag(sk, SOCK_ZAPPED); | |
1623 | ||
1624 | sk->sk_protocol = protocol; | |
1625 | ||
1626 | sock->state = SS_UNCONNECTED; | |
1627 | sk->sk_state = BT_OPEN; | |
1628 | ||
1629 | bt_sock_link(&hci_sk_list, sk); | |
1630 | return 0; | |
1631 | } | |
1632 | ||
ec1b4cf7 | 1633 | static const struct net_proto_family hci_sock_family_ops = { |
1da177e4 LT |
1634 | .family = PF_BLUETOOTH, |
1635 | .owner = THIS_MODULE, | |
1636 | .create = hci_sock_create, | |
1637 | }; | |
1638 | ||
1da177e4 LT |
1639 | int __init hci_sock_init(void) |
1640 | { | |
1641 | int err; | |
1642 | ||
b0a8e282 MH |
1643 | BUILD_BUG_ON(sizeof(struct sockaddr_hci) > sizeof(struct sockaddr)); |
1644 | ||
1da177e4 LT |
1645 | err = proto_register(&hci_sk_proto, 0); |
1646 | if (err < 0) | |
1647 | return err; | |
1648 | ||
1649 | err = bt_sock_register(BTPROTO_HCI, &hci_sock_family_ops); | |
f7c86637 MY |
1650 | if (err < 0) { |
1651 | BT_ERR("HCI socket registration failed"); | |
1da177e4 | 1652 | goto error; |
f7c86637 MY |
1653 | } |
1654 | ||
b0316615 | 1655 | err = bt_procfs_init(&init_net, "hci", &hci_sk_list, NULL); |
f7c86637 MY |
1656 | if (err < 0) { |
1657 | BT_ERR("Failed to create HCI proc file"); | |
1658 | bt_sock_unregister(BTPROTO_HCI); | |
1659 | goto error; | |
1660 | } | |
1da177e4 | 1661 | |
1da177e4 LT |
1662 | BT_INFO("HCI socket layer initialized"); |
1663 | ||
1664 | return 0; | |
1665 | ||
1666 | error: | |
1da177e4 LT |
1667 | proto_unregister(&hci_sk_proto); |
1668 | return err; | |
1669 | } | |
1670 | ||
b7440a14 | 1671 | void hci_sock_cleanup(void) |
1da177e4 | 1672 | { |
f7c86637 | 1673 | bt_procfs_cleanup(&init_net, "hci"); |
5e9d7f86 | 1674 | bt_sock_unregister(BTPROTO_HCI); |
1da177e4 | 1675 | proto_unregister(&hci_sk_proto); |
1da177e4 | 1676 | } |