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Commit | Line | Data |
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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. */ | |
7a6038b3 | 26 | #include <linux/compat.h> |
8c520a59 | 27 | #include <linux/export.h> |
787b306c | 28 | #include <linux/utsname.h> |
70ecce91 | 29 | #include <linux/sched.h> |
1da177e4 LT |
30 | #include <asm/unaligned.h> |
31 | ||
32 | #include <net/bluetooth/bluetooth.h> | |
33 | #include <net/bluetooth/hci_core.h> | |
cd82e61c | 34 | #include <net/bluetooth/hci_mon.h> |
fa4335d7 JH |
35 | #include <net/bluetooth/mgmt.h> |
36 | ||
37 | #include "mgmt_util.h" | |
1da177e4 | 38 | |
801c1e8d JH |
39 | static LIST_HEAD(mgmt_chan_list); |
40 | static DEFINE_MUTEX(mgmt_chan_list_lock); | |
41 | ||
70ecce91 MH |
42 | static DEFINE_IDA(sock_cookie_ida); |
43 | ||
cd82e61c MH |
44 | static atomic_t monitor_promisc = ATOMIC_INIT(0); |
45 | ||
1da177e4 LT |
46 | /* ----- HCI socket interface ----- */ |
47 | ||
863def58 MH |
48 | /* Socket info */ |
49 | #define hci_pi(sk) ((struct hci_pinfo *) sk) | |
50 | ||
51 | struct hci_pinfo { | |
52 | struct bt_sock bt; | |
53 | struct hci_dev *hdev; | |
54 | struct hci_filter filter; | |
55 | __u32 cmsg_mask; | |
56 | unsigned short channel; | |
6befc644 | 57 | unsigned long flags; |
70ecce91 MH |
58 | __u32 cookie; |
59 | char comm[TASK_COMM_LEN]; | |
863def58 MH |
60 | }; |
61 | ||
6befc644 MH |
62 | void hci_sock_set_flag(struct sock *sk, int nr) |
63 | { | |
64 | set_bit(nr, &hci_pi(sk)->flags); | |
65 | } | |
66 | ||
67 | void hci_sock_clear_flag(struct sock *sk, int nr) | |
68 | { | |
69 | clear_bit(nr, &hci_pi(sk)->flags); | |
70 | } | |
71 | ||
c85be545 MH |
72 | int hci_sock_test_flag(struct sock *sk, int nr) |
73 | { | |
74 | return test_bit(nr, &hci_pi(sk)->flags); | |
75 | } | |
76 | ||
d0f172b1 JH |
77 | unsigned short hci_sock_get_channel(struct sock *sk) |
78 | { | |
79 | return hci_pi(sk)->channel; | |
80 | } | |
81 | ||
70ecce91 MH |
82 | u32 hci_sock_get_cookie(struct sock *sk) |
83 | { | |
84 | return hci_pi(sk)->cookie; | |
85 | } | |
86 | ||
df1cb87a MH |
87 | static bool hci_sock_gen_cookie(struct sock *sk) |
88 | { | |
89 | int id = hci_pi(sk)->cookie; | |
90 | ||
91 | if (!id) { | |
92 | id = ida_simple_get(&sock_cookie_ida, 1, 0, GFP_KERNEL); | |
93 | if (id < 0) | |
94 | id = 0xffffffff; | |
95 | ||
96 | hci_pi(sk)->cookie = id; | |
97 | get_task_comm(hci_pi(sk)->comm, current); | |
98 | return true; | |
99 | } | |
100 | ||
101 | return false; | |
102 | } | |
103 | ||
104 | static void hci_sock_free_cookie(struct sock *sk) | |
105 | { | |
106 | int id = hci_pi(sk)->cookie; | |
107 | ||
108 | if (id) { | |
109 | hci_pi(sk)->cookie = 0xffffffff; | |
110 | ida_simple_remove(&sock_cookie_ida, id); | |
111 | } | |
112 | } | |
113 | ||
9391976a | 114 | static inline int hci_test_bit(int nr, const void *addr) |
1da177e4 | 115 | { |
9391976a | 116 | return *((const __u32 *) addr + (nr >> 5)) & ((__u32) 1 << (nr & 31)); |
1da177e4 LT |
117 | } |
118 | ||
119 | /* Security filter */ | |
3ad254f7 MH |
120 | #define HCI_SFLT_MAX_OGF 5 |
121 | ||
122 | struct hci_sec_filter { | |
123 | __u32 type_mask; | |
124 | __u32 event_mask[2]; | |
125 | __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4]; | |
126 | }; | |
127 | ||
7e67c112 | 128 | static const struct hci_sec_filter hci_sec_filter = { |
1da177e4 LT |
129 | /* Packet types */ |
130 | 0x10, | |
131 | /* Events */ | |
dd7f5527 | 132 | { 0x1000d9fe, 0x0000b00c }, |
1da177e4 LT |
133 | /* Commands */ |
134 | { | |
135 | { 0x0 }, | |
136 | /* OGF_LINK_CTL */ | |
7c631a67 | 137 | { 0xbe000006, 0x00000001, 0x00000000, 0x00 }, |
1da177e4 | 138 | /* OGF_LINK_POLICY */ |
7c631a67 | 139 | { 0x00005200, 0x00000000, 0x00000000, 0x00 }, |
1da177e4 | 140 | /* OGF_HOST_CTL */ |
7c631a67 | 141 | { 0xaab00200, 0x2b402aaa, 0x05220154, 0x00 }, |
1da177e4 | 142 | /* OGF_INFO_PARAM */ |
7c631a67 | 143 | { 0x000002be, 0x00000000, 0x00000000, 0x00 }, |
1da177e4 | 144 | /* OGF_STATUS_PARAM */ |
7c631a67 | 145 | { 0x000000ea, 0x00000000, 0x00000000, 0x00 } |
1da177e4 LT |
146 | } |
147 | }; | |
148 | ||
149 | static struct bt_sock_list hci_sk_list = { | |
d5fb2962 | 150 | .lock = __RW_LOCK_UNLOCKED(hci_sk_list.lock) |
1da177e4 LT |
151 | }; |
152 | ||
f81fe64f MH |
153 | static bool is_filtered_packet(struct sock *sk, struct sk_buff *skb) |
154 | { | |
155 | struct hci_filter *flt; | |
156 | int flt_type, flt_event; | |
157 | ||
158 | /* Apply filter */ | |
159 | flt = &hci_pi(sk)->filter; | |
160 | ||
d79f34e3 | 161 | flt_type = hci_skb_pkt_type(skb) & HCI_FLT_TYPE_BITS; |
f81fe64f MH |
162 | |
163 | if (!test_bit(flt_type, &flt->type_mask)) | |
164 | return true; | |
165 | ||
166 | /* Extra filter for event packets only */ | |
d79f34e3 | 167 | if (hci_skb_pkt_type(skb) != HCI_EVENT_PKT) |
f81fe64f MH |
168 | return false; |
169 | ||
170 | flt_event = (*(__u8 *)skb->data & HCI_FLT_EVENT_BITS); | |
171 | ||
172 | if (!hci_test_bit(flt_event, &flt->event_mask)) | |
173 | return true; | |
174 | ||
175 | /* Check filter only when opcode is set */ | |
176 | if (!flt->opcode) | |
177 | return false; | |
178 | ||
179 | if (flt_event == HCI_EV_CMD_COMPLETE && | |
180 | flt->opcode != get_unaligned((__le16 *)(skb->data + 3))) | |
181 | return true; | |
182 | ||
183 | if (flt_event == HCI_EV_CMD_STATUS && | |
184 | flt->opcode != get_unaligned((__le16 *)(skb->data + 4))) | |
185 | return true; | |
186 | ||
187 | return false; | |
188 | } | |
189 | ||
1da177e4 | 190 | /* Send frame to RAW socket */ |
470fe1b5 | 191 | void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
192 | { |
193 | struct sock *sk; | |
e0edf373 | 194 | struct sk_buff *skb_copy = NULL; |
1da177e4 LT |
195 | |
196 | BT_DBG("hdev %p len %d", hdev, skb->len); | |
197 | ||
198 | read_lock(&hci_sk_list.lock); | |
470fe1b5 | 199 | |
b67bfe0d | 200 | sk_for_each(sk, &hci_sk_list.head) { |
1da177e4 LT |
201 | struct sk_buff *nskb; |
202 | ||
203 | if (sk->sk_state != BT_BOUND || hci_pi(sk)->hdev != hdev) | |
204 | continue; | |
205 | ||
206 | /* Don't send frame to the socket it came from */ | |
207 | if (skb->sk == sk) | |
208 | continue; | |
209 | ||
23500189 | 210 | if (hci_pi(sk)->channel == HCI_CHANNEL_RAW) { |
d79f34e3 MH |
211 | if (hci_skb_pkt_type(skb) != HCI_COMMAND_PKT && |
212 | hci_skb_pkt_type(skb) != HCI_EVENT_PKT && | |
213 | hci_skb_pkt_type(skb) != HCI_ACLDATA_PKT && | |
cc974003 MH |
214 | hci_skb_pkt_type(skb) != HCI_SCODATA_PKT && |
215 | hci_skb_pkt_type(skb) != HCI_ISODATA_PKT) | |
bb77543e | 216 | continue; |
23500189 MH |
217 | if (is_filtered_packet(sk, skb)) |
218 | continue; | |
219 | } else if (hci_pi(sk)->channel == HCI_CHANNEL_USER) { | |
220 | if (!bt_cb(skb)->incoming) | |
221 | continue; | |
d79f34e3 MH |
222 | if (hci_skb_pkt_type(skb) != HCI_EVENT_PKT && |
223 | hci_skb_pkt_type(skb) != HCI_ACLDATA_PKT && | |
cc974003 MH |
224 | hci_skb_pkt_type(skb) != HCI_SCODATA_PKT && |
225 | hci_skb_pkt_type(skb) != HCI_ISODATA_PKT) | |
23500189 MH |
226 | continue; |
227 | } else { | |
228 | /* Don't send frame to other channel types */ | |
1da177e4 | 229 | continue; |
23500189 | 230 | } |
1da177e4 | 231 | |
e0edf373 MH |
232 | if (!skb_copy) { |
233 | /* Create a private copy with headroom */ | |
bad93e9d | 234 | skb_copy = __pskb_copy_fclone(skb, 1, GFP_ATOMIC, true); |
e0edf373 MH |
235 | if (!skb_copy) |
236 | continue; | |
237 | ||
238 | /* Put type byte before the data */ | |
d79f34e3 | 239 | memcpy(skb_push(skb_copy, 1), &hci_skb_pkt_type(skb), 1); |
e0edf373 MH |
240 | } |
241 | ||
242 | nskb = skb_clone(skb_copy, GFP_ATOMIC); | |
70f23020 | 243 | if (!nskb) |
1da177e4 LT |
244 | continue; |
245 | ||
470fe1b5 MH |
246 | if (sock_queue_rcv_skb(sk, nskb)) |
247 | kfree_skb(nskb); | |
248 | } | |
249 | ||
250 | read_unlock(&hci_sk_list.lock); | |
e0edf373 MH |
251 | |
252 | kfree_skb(skb_copy); | |
470fe1b5 MH |
253 | } |
254 | ||
7129069e | 255 | /* Send frame to sockets with specific channel */ |
a9ee77af SAS |
256 | static void __hci_send_to_channel(unsigned short channel, struct sk_buff *skb, |
257 | int flag, struct sock *skip_sk) | |
470fe1b5 MH |
258 | { |
259 | struct sock *sk; | |
470fe1b5 | 260 | |
7129069e | 261 | BT_DBG("channel %u len %d", channel, skb->len); |
470fe1b5 | 262 | |
b67bfe0d | 263 | sk_for_each(sk, &hci_sk_list.head) { |
470fe1b5 MH |
264 | struct sk_buff *nskb; |
265 | ||
c08b1a1d | 266 | /* Ignore socket without the flag set */ |
c85be545 | 267 | if (!hci_sock_test_flag(sk, flag)) |
d7f72f61 MH |
268 | continue; |
269 | ||
c08b1a1d MH |
270 | /* Skip the original socket */ |
271 | if (sk == skip_sk) | |
17711c62 MH |
272 | continue; |
273 | ||
274 | if (sk->sk_state != BT_BOUND) | |
275 | continue; | |
276 | ||
277 | if (hci_pi(sk)->channel != channel) | |
278 | continue; | |
279 | ||
280 | nskb = skb_clone(skb, GFP_ATOMIC); | |
281 | if (!nskb) | |
282 | continue; | |
283 | ||
284 | if (sock_queue_rcv_skb(sk, nskb)) | |
285 | kfree_skb(nskb); | |
286 | } | |
287 | ||
a9ee77af SAS |
288 | } |
289 | ||
290 | void hci_send_to_channel(unsigned short channel, struct sk_buff *skb, | |
291 | int flag, struct sock *skip_sk) | |
292 | { | |
293 | read_lock(&hci_sk_list.lock); | |
294 | __hci_send_to_channel(channel, skb, flag, skip_sk); | |
17711c62 MH |
295 | read_unlock(&hci_sk_list.lock); |
296 | } | |
297 | ||
cd82e61c MH |
298 | /* Send frame to monitor socket */ |
299 | void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb) | |
300 | { | |
cd82e61c | 301 | struct sk_buff *skb_copy = NULL; |
2b531294 | 302 | struct hci_mon_hdr *hdr; |
cd82e61c MH |
303 | __le16 opcode; |
304 | ||
305 | if (!atomic_read(&monitor_promisc)) | |
306 | return; | |
307 | ||
308 | BT_DBG("hdev %p len %d", hdev, skb->len); | |
309 | ||
d79f34e3 | 310 | switch (hci_skb_pkt_type(skb)) { |
cd82e61c | 311 | case HCI_COMMAND_PKT: |
dcf4adbf | 312 | opcode = cpu_to_le16(HCI_MON_COMMAND_PKT); |
cd82e61c MH |
313 | break; |
314 | case HCI_EVENT_PKT: | |
dcf4adbf | 315 | opcode = cpu_to_le16(HCI_MON_EVENT_PKT); |
cd82e61c MH |
316 | break; |
317 | case HCI_ACLDATA_PKT: | |
318 | if (bt_cb(skb)->incoming) | |
dcf4adbf | 319 | opcode = cpu_to_le16(HCI_MON_ACL_RX_PKT); |
cd82e61c | 320 | else |
dcf4adbf | 321 | opcode = cpu_to_le16(HCI_MON_ACL_TX_PKT); |
cd82e61c MH |
322 | break; |
323 | case HCI_SCODATA_PKT: | |
324 | if (bt_cb(skb)->incoming) | |
dcf4adbf | 325 | opcode = cpu_to_le16(HCI_MON_SCO_RX_PKT); |
cd82e61c | 326 | else |
dcf4adbf | 327 | opcode = cpu_to_le16(HCI_MON_SCO_TX_PKT); |
cd82e61c | 328 | break; |
f9a619db LAD |
329 | case HCI_ISODATA_PKT: |
330 | if (bt_cb(skb)->incoming) | |
331 | opcode = cpu_to_le16(HCI_MON_ISO_RX_PKT); | |
332 | else | |
333 | opcode = cpu_to_le16(HCI_MON_ISO_TX_PKT); | |
334 | break; | |
e875ff84 MH |
335 | case HCI_DIAG_PKT: |
336 | opcode = cpu_to_le16(HCI_MON_VENDOR_DIAG); | |
337 | break; | |
cd82e61c MH |
338 | default: |
339 | return; | |
340 | } | |
341 | ||
2b531294 MH |
342 | /* Create a private copy with headroom */ |
343 | skb_copy = __pskb_copy_fclone(skb, HCI_MON_HDR_SIZE, GFP_ATOMIC, true); | |
344 | if (!skb_copy) | |
345 | return; | |
346 | ||
347 | /* Put header before the data */ | |
d58ff351 | 348 | hdr = skb_push(skb_copy, HCI_MON_HDR_SIZE); |
2b531294 MH |
349 | hdr->opcode = opcode; |
350 | hdr->index = cpu_to_le16(hdev->id); | |
351 | hdr->len = cpu_to_le16(skb->len); | |
352 | ||
c08b1a1d MH |
353 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb_copy, |
354 | HCI_SOCK_TRUSTED, NULL); | |
cd82e61c MH |
355 | kfree_skb(skb_copy); |
356 | } | |
357 | ||
38ceaa00 MH |
358 | void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event, |
359 | void *data, u16 data_len, ktime_t tstamp, | |
360 | int flag, struct sock *skip_sk) | |
361 | { | |
362 | struct sock *sk; | |
363 | __le16 index; | |
364 | ||
365 | if (hdev) | |
366 | index = cpu_to_le16(hdev->id); | |
367 | else | |
368 | index = cpu_to_le16(MGMT_INDEX_NONE); | |
369 | ||
370 | read_lock(&hci_sk_list.lock); | |
371 | ||
372 | sk_for_each(sk, &hci_sk_list.head) { | |
373 | struct hci_mon_hdr *hdr; | |
374 | struct sk_buff *skb; | |
375 | ||
376 | if (hci_pi(sk)->channel != HCI_CHANNEL_CONTROL) | |
377 | continue; | |
378 | ||
379 | /* Ignore socket without the flag set */ | |
380 | if (!hci_sock_test_flag(sk, flag)) | |
381 | continue; | |
382 | ||
383 | /* Skip the original socket */ | |
384 | if (sk == skip_sk) | |
385 | continue; | |
386 | ||
387 | skb = bt_skb_alloc(6 + data_len, GFP_ATOMIC); | |
388 | if (!skb) | |
389 | continue; | |
390 | ||
391 | put_unaligned_le32(hci_pi(sk)->cookie, skb_put(skb, 4)); | |
392 | put_unaligned_le16(event, skb_put(skb, 2)); | |
393 | ||
394 | if (data) | |
59ae1d12 | 395 | skb_put_data(skb, data, data_len); |
38ceaa00 MH |
396 | |
397 | skb->tstamp = tstamp; | |
398 | ||
d58ff351 | 399 | hdr = skb_push(skb, HCI_MON_HDR_SIZE); |
38ceaa00 MH |
400 | hdr->opcode = cpu_to_le16(HCI_MON_CTRL_EVENT); |
401 | hdr->index = index; | |
402 | hdr->len = cpu_to_le16(skb->len - HCI_MON_HDR_SIZE); | |
403 | ||
a9ee77af SAS |
404 | __hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, |
405 | HCI_SOCK_TRUSTED, NULL); | |
38ceaa00 MH |
406 | kfree_skb(skb); |
407 | } | |
408 | ||
409 | read_unlock(&hci_sk_list.lock); | |
410 | } | |
411 | ||
cd82e61c MH |
412 | static struct sk_buff *create_monitor_event(struct hci_dev *hdev, int event) |
413 | { | |
414 | struct hci_mon_hdr *hdr; | |
415 | struct hci_mon_new_index *ni; | |
6c566dd5 | 416 | struct hci_mon_index_info *ii; |
cd82e61c MH |
417 | struct sk_buff *skb; |
418 | __le16 opcode; | |
419 | ||
420 | switch (event) { | |
421 | case HCI_DEV_REG: | |
422 | skb = bt_skb_alloc(HCI_MON_NEW_INDEX_SIZE, GFP_ATOMIC); | |
423 | if (!skb) | |
424 | return NULL; | |
425 | ||
4df864c1 | 426 | ni = skb_put(skb, HCI_MON_NEW_INDEX_SIZE); |
cd82e61c MH |
427 | ni->type = hdev->dev_type; |
428 | ni->bus = hdev->bus; | |
429 | bacpy(&ni->bdaddr, &hdev->bdaddr); | |
430 | memcpy(ni->name, hdev->name, 8); | |
431 | ||
dcf4adbf | 432 | opcode = cpu_to_le16(HCI_MON_NEW_INDEX); |
cd82e61c MH |
433 | break; |
434 | ||
435 | case HCI_DEV_UNREG: | |
436 | skb = bt_skb_alloc(0, GFP_ATOMIC); | |
437 | if (!skb) | |
438 | return NULL; | |
439 | ||
dcf4adbf | 440 | opcode = cpu_to_le16(HCI_MON_DEL_INDEX); |
cd82e61c MH |
441 | break; |
442 | ||
e131d74a MH |
443 | case HCI_DEV_SETUP: |
444 | if (hdev->manufacturer == 0xffff) | |
445 | return NULL; | |
446 | ||
447 | /* fall through */ | |
448 | ||
6c566dd5 MH |
449 | case HCI_DEV_UP: |
450 | skb = bt_skb_alloc(HCI_MON_INDEX_INFO_SIZE, GFP_ATOMIC); | |
451 | if (!skb) | |
452 | return NULL; | |
453 | ||
4df864c1 | 454 | ii = skb_put(skb, HCI_MON_INDEX_INFO_SIZE); |
6c566dd5 MH |
455 | bacpy(&ii->bdaddr, &hdev->bdaddr); |
456 | ii->manufacturer = cpu_to_le16(hdev->manufacturer); | |
457 | ||
458 | opcode = cpu_to_le16(HCI_MON_INDEX_INFO); | |
459 | break; | |
460 | ||
22db3cbc MH |
461 | case HCI_DEV_OPEN: |
462 | skb = bt_skb_alloc(0, GFP_ATOMIC); | |
463 | if (!skb) | |
464 | return NULL; | |
465 | ||
466 | opcode = cpu_to_le16(HCI_MON_OPEN_INDEX); | |
467 | break; | |
468 | ||
469 | case HCI_DEV_CLOSE: | |
470 | skb = bt_skb_alloc(0, GFP_ATOMIC); | |
471 | if (!skb) | |
472 | return NULL; | |
473 | ||
474 | opcode = cpu_to_le16(HCI_MON_CLOSE_INDEX); | |
475 | break; | |
476 | ||
cd82e61c MH |
477 | default: |
478 | return NULL; | |
479 | } | |
480 | ||
481 | __net_timestamp(skb); | |
482 | ||
d58ff351 | 483 | hdr = skb_push(skb, HCI_MON_HDR_SIZE); |
cd82e61c MH |
484 | hdr->opcode = opcode; |
485 | hdr->index = cpu_to_le16(hdev->id); | |
486 | hdr->len = cpu_to_le16(skb->len - HCI_MON_HDR_SIZE); | |
487 | ||
488 | return skb; | |
489 | } | |
490 | ||
249fa169 MH |
491 | static struct sk_buff *create_monitor_ctrl_open(struct sock *sk) |
492 | { | |
493 | struct hci_mon_hdr *hdr; | |
494 | struct sk_buff *skb; | |
d0bef1d2 | 495 | u16 format; |
249fa169 MH |
496 | u8 ver[3]; |
497 | u32 flags; | |
498 | ||
0ef2c42f MH |
499 | /* No message needed when cookie is not present */ |
500 | if (!hci_pi(sk)->cookie) | |
501 | return NULL; | |
502 | ||
d0bef1d2 | 503 | switch (hci_pi(sk)->channel) { |
f81f5b2d MH |
504 | case HCI_CHANNEL_RAW: |
505 | format = 0x0000; | |
506 | ver[0] = BT_SUBSYS_VERSION; | |
507 | put_unaligned_le16(BT_SUBSYS_REVISION, ver + 1); | |
508 | break; | |
aa1638dd MH |
509 | case HCI_CHANNEL_USER: |
510 | format = 0x0001; | |
511 | ver[0] = BT_SUBSYS_VERSION; | |
512 | put_unaligned_le16(BT_SUBSYS_REVISION, ver + 1); | |
513 | break; | |
d0bef1d2 MH |
514 | case HCI_CHANNEL_CONTROL: |
515 | format = 0x0002; | |
516 | mgmt_fill_version_info(ver); | |
517 | break; | |
518 | default: | |
519 | /* No message for unsupported format */ | |
520 | return NULL; | |
521 | } | |
522 | ||
249fa169 MH |
523 | skb = bt_skb_alloc(14 + TASK_COMM_LEN , GFP_ATOMIC); |
524 | if (!skb) | |
525 | return NULL; | |
526 | ||
249fa169 MH |
527 | flags = hci_sock_test_flag(sk, HCI_SOCK_TRUSTED) ? 0x1 : 0x0; |
528 | ||
529 | put_unaligned_le32(hci_pi(sk)->cookie, skb_put(skb, 4)); | |
530 | put_unaligned_le16(format, skb_put(skb, 2)); | |
59ae1d12 | 531 | skb_put_data(skb, ver, sizeof(ver)); |
249fa169 | 532 | put_unaligned_le32(flags, skb_put(skb, 4)); |
634fef61 | 533 | skb_put_u8(skb, TASK_COMM_LEN); |
59ae1d12 | 534 | skb_put_data(skb, hci_pi(sk)->comm, TASK_COMM_LEN); |
249fa169 MH |
535 | |
536 | __net_timestamp(skb); | |
537 | ||
d58ff351 | 538 | hdr = skb_push(skb, HCI_MON_HDR_SIZE); |
249fa169 | 539 | hdr->opcode = cpu_to_le16(HCI_MON_CTRL_OPEN); |
0ef2c42f MH |
540 | if (hci_pi(sk)->hdev) |
541 | hdr->index = cpu_to_le16(hci_pi(sk)->hdev->id); | |
542 | else | |
543 | hdr->index = cpu_to_le16(HCI_DEV_NONE); | |
249fa169 MH |
544 | hdr->len = cpu_to_le16(skb->len - HCI_MON_HDR_SIZE); |
545 | ||
546 | return skb; | |
547 | } | |
548 | ||
549 | static struct sk_buff *create_monitor_ctrl_close(struct sock *sk) | |
550 | { | |
551 | struct hci_mon_hdr *hdr; | |
552 | struct sk_buff *skb; | |
553 | ||
0ef2c42f MH |
554 | /* No message needed when cookie is not present */ |
555 | if (!hci_pi(sk)->cookie) | |
556 | return NULL; | |
557 | ||
d0bef1d2 | 558 | switch (hci_pi(sk)->channel) { |
f81f5b2d | 559 | case HCI_CHANNEL_RAW: |
aa1638dd | 560 | case HCI_CHANNEL_USER: |
d0bef1d2 MH |
561 | case HCI_CHANNEL_CONTROL: |
562 | break; | |
563 | default: | |
564 | /* No message for unsupported format */ | |
565 | return NULL; | |
566 | } | |
567 | ||
249fa169 MH |
568 | skb = bt_skb_alloc(4, GFP_ATOMIC); |
569 | if (!skb) | |
570 | return NULL; | |
571 | ||
572 | put_unaligned_le32(hci_pi(sk)->cookie, skb_put(skb, 4)); | |
573 | ||
574 | __net_timestamp(skb); | |
575 | ||
d58ff351 | 576 | hdr = skb_push(skb, HCI_MON_HDR_SIZE); |
249fa169 | 577 | hdr->opcode = cpu_to_le16(HCI_MON_CTRL_CLOSE); |
0ef2c42f MH |
578 | if (hci_pi(sk)->hdev) |
579 | hdr->index = cpu_to_le16(hci_pi(sk)->hdev->id); | |
580 | else | |
581 | hdr->index = cpu_to_le16(HCI_DEV_NONE); | |
249fa169 MH |
582 | hdr->len = cpu_to_le16(skb->len - HCI_MON_HDR_SIZE); |
583 | ||
584 | return skb; | |
585 | } | |
586 | ||
38ceaa00 MH |
587 | static struct sk_buff *create_monitor_ctrl_command(struct sock *sk, u16 index, |
588 | u16 opcode, u16 len, | |
589 | const void *buf) | |
590 | { | |
591 | struct hci_mon_hdr *hdr; | |
592 | struct sk_buff *skb; | |
593 | ||
594 | skb = bt_skb_alloc(6 + len, GFP_ATOMIC); | |
595 | if (!skb) | |
596 | return NULL; | |
597 | ||
598 | put_unaligned_le32(hci_pi(sk)->cookie, skb_put(skb, 4)); | |
599 | put_unaligned_le16(opcode, skb_put(skb, 2)); | |
600 | ||
601 | if (buf) | |
59ae1d12 | 602 | skb_put_data(skb, buf, len); |
38ceaa00 MH |
603 | |
604 | __net_timestamp(skb); | |
605 | ||
d58ff351 | 606 | hdr = skb_push(skb, HCI_MON_HDR_SIZE); |
38ceaa00 MH |
607 | hdr->opcode = cpu_to_le16(HCI_MON_CTRL_COMMAND); |
608 | hdr->index = cpu_to_le16(index); | |
609 | hdr->len = cpu_to_le16(skb->len - HCI_MON_HDR_SIZE); | |
610 | ||
611 | return skb; | |
612 | } | |
613 | ||
787b306c JB |
614 | static void __printf(2, 3) |
615 | send_monitor_note(struct sock *sk, const char *fmt, ...) | |
dd31506d | 616 | { |
787b306c | 617 | size_t len; |
dd31506d MH |
618 | struct hci_mon_hdr *hdr; |
619 | struct sk_buff *skb; | |
787b306c JB |
620 | va_list args; |
621 | ||
622 | va_start(args, fmt); | |
623 | len = vsnprintf(NULL, 0, fmt, args); | |
624 | va_end(args); | |
dd31506d MH |
625 | |
626 | skb = bt_skb_alloc(len + 1, GFP_ATOMIC); | |
627 | if (!skb) | |
628 | return; | |
629 | ||
787b306c JB |
630 | va_start(args, fmt); |
631 | vsprintf(skb_put(skb, len), fmt, args); | |
4df864c1 | 632 | *(u8 *)skb_put(skb, 1) = 0; |
787b306c | 633 | va_end(args); |
dd31506d MH |
634 | |
635 | __net_timestamp(skb); | |
636 | ||
637 | hdr = (void *)skb_push(skb, HCI_MON_HDR_SIZE); | |
638 | hdr->opcode = cpu_to_le16(HCI_MON_SYSTEM_NOTE); | |
639 | hdr->index = cpu_to_le16(HCI_DEV_NONE); | |
640 | hdr->len = cpu_to_le16(skb->len - HCI_MON_HDR_SIZE); | |
641 | ||
642 | if (sock_queue_rcv_skb(sk, skb)) | |
643 | kfree_skb(skb); | |
644 | } | |
645 | ||
cd82e61c MH |
646 | static void send_monitor_replay(struct sock *sk) |
647 | { | |
648 | struct hci_dev *hdev; | |
649 | ||
650 | read_lock(&hci_dev_list_lock); | |
651 | ||
652 | list_for_each_entry(hdev, &hci_dev_list, list) { | |
653 | struct sk_buff *skb; | |
654 | ||
655 | skb = create_monitor_event(hdev, HCI_DEV_REG); | |
656 | if (!skb) | |
657 | continue; | |
658 | ||
659 | if (sock_queue_rcv_skb(sk, skb)) | |
660 | kfree_skb(skb); | |
22db3cbc MH |
661 | |
662 | if (!test_bit(HCI_RUNNING, &hdev->flags)) | |
663 | continue; | |
664 | ||
665 | skb = create_monitor_event(hdev, HCI_DEV_OPEN); | |
666 | if (!skb) | |
667 | continue; | |
668 | ||
669 | if (sock_queue_rcv_skb(sk, skb)) | |
670 | kfree_skb(skb); | |
6c566dd5 | 671 | |
e131d74a MH |
672 | if (test_bit(HCI_UP, &hdev->flags)) |
673 | skb = create_monitor_event(hdev, HCI_DEV_UP); | |
674 | else if (hci_dev_test_flag(hdev, HCI_SETUP)) | |
675 | skb = create_monitor_event(hdev, HCI_DEV_SETUP); | |
676 | else | |
677 | skb = NULL; | |
6c566dd5 | 678 | |
e131d74a MH |
679 | if (skb) { |
680 | if (sock_queue_rcv_skb(sk, skb)) | |
681 | kfree_skb(skb); | |
682 | } | |
cd82e61c MH |
683 | } |
684 | ||
685 | read_unlock(&hci_dev_list_lock); | |
686 | } | |
687 | ||
249fa169 MH |
688 | static void send_monitor_control_replay(struct sock *mon_sk) |
689 | { | |
690 | struct sock *sk; | |
691 | ||
692 | read_lock(&hci_sk_list.lock); | |
693 | ||
694 | sk_for_each(sk, &hci_sk_list.head) { | |
695 | struct sk_buff *skb; | |
696 | ||
249fa169 MH |
697 | skb = create_monitor_ctrl_open(sk); |
698 | if (!skb) | |
699 | continue; | |
700 | ||
701 | if (sock_queue_rcv_skb(mon_sk, skb)) | |
702 | kfree_skb(skb); | |
703 | } | |
704 | ||
705 | read_unlock(&hci_sk_list.lock); | |
706 | } | |
707 | ||
040030ef MH |
708 | /* Generate internal stack event */ |
709 | static void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data) | |
710 | { | |
711 | struct hci_event_hdr *hdr; | |
712 | struct hci_ev_stack_internal *ev; | |
713 | struct sk_buff *skb; | |
714 | ||
715 | skb = bt_skb_alloc(HCI_EVENT_HDR_SIZE + sizeof(*ev) + dlen, GFP_ATOMIC); | |
716 | if (!skb) | |
717 | return; | |
718 | ||
4df864c1 | 719 | hdr = skb_put(skb, HCI_EVENT_HDR_SIZE); |
040030ef MH |
720 | hdr->evt = HCI_EV_STACK_INTERNAL; |
721 | hdr->plen = sizeof(*ev) + dlen; | |
722 | ||
4df864c1 | 723 | ev = skb_put(skb, sizeof(*ev) + dlen); |
040030ef MH |
724 | ev->type = type; |
725 | memcpy(ev->data, data, dlen); | |
726 | ||
727 | bt_cb(skb)->incoming = 1; | |
728 | __net_timestamp(skb); | |
729 | ||
d79f34e3 | 730 | hci_skb_pkt_type(skb) = HCI_EVENT_PKT; |
040030ef MH |
731 | hci_send_to_sock(hdev, skb); |
732 | kfree_skb(skb); | |
733 | } | |
734 | ||
735 | void hci_sock_dev_event(struct hci_dev *hdev, int event) | |
736 | { | |
040030ef MH |
737 | BT_DBG("hdev %s event %d", hdev->name, event); |
738 | ||
cd82e61c MH |
739 | if (atomic_read(&monitor_promisc)) { |
740 | struct sk_buff *skb; | |
741 | ||
ed1b28a4 | 742 | /* Send event to monitor */ |
cd82e61c MH |
743 | skb = create_monitor_event(hdev, event); |
744 | if (skb) { | |
c08b1a1d MH |
745 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, |
746 | HCI_SOCK_TRUSTED, NULL); | |
cd82e61c MH |
747 | kfree_skb(skb); |
748 | } | |
749 | } | |
750 | ||
ed1b28a4 MH |
751 | if (event <= HCI_DEV_DOWN) { |
752 | struct hci_ev_si_device ev; | |
753 | ||
754 | /* Send event to sockets */ | |
755 | ev.event = event; | |
756 | ev.dev_id = hdev->id; | |
757 | hci_si_event(NULL, HCI_EV_SI_DEVICE, sizeof(ev), &ev); | |
758 | } | |
040030ef MH |
759 | |
760 | if (event == HCI_DEV_UNREG) { | |
761 | struct sock *sk; | |
040030ef MH |
762 | |
763 | /* Detach sockets from device */ | |
764 | read_lock(&hci_sk_list.lock); | |
b67bfe0d | 765 | sk_for_each(sk, &hci_sk_list.head) { |
040030ef MH |
766 | bh_lock_sock_nested(sk); |
767 | if (hci_pi(sk)->hdev == hdev) { | |
768 | hci_pi(sk)->hdev = NULL; | |
769 | sk->sk_err = EPIPE; | |
770 | sk->sk_state = BT_OPEN; | |
771 | sk->sk_state_change(sk); | |
772 | ||
773 | hci_dev_put(hdev); | |
774 | } | |
775 | bh_unlock_sock(sk); | |
776 | } | |
777 | read_unlock(&hci_sk_list.lock); | |
778 | } | |
779 | } | |
780 | ||
801c1e8d JH |
781 | static struct hci_mgmt_chan *__hci_mgmt_chan_find(unsigned short channel) |
782 | { | |
783 | struct hci_mgmt_chan *c; | |
784 | ||
785 | list_for_each_entry(c, &mgmt_chan_list, list) { | |
786 | if (c->channel == channel) | |
787 | return c; | |
788 | } | |
789 | ||
790 | return NULL; | |
791 | } | |
792 | ||
793 | static struct hci_mgmt_chan *hci_mgmt_chan_find(unsigned short channel) | |
794 | { | |
795 | struct hci_mgmt_chan *c; | |
796 | ||
797 | mutex_lock(&mgmt_chan_list_lock); | |
798 | c = __hci_mgmt_chan_find(channel); | |
799 | mutex_unlock(&mgmt_chan_list_lock); | |
800 | ||
801 | return c; | |
802 | } | |
803 | ||
804 | int hci_mgmt_chan_register(struct hci_mgmt_chan *c) | |
805 | { | |
806 | if (c->channel < HCI_CHANNEL_CONTROL) | |
807 | return -EINVAL; | |
808 | ||
809 | mutex_lock(&mgmt_chan_list_lock); | |
810 | if (__hci_mgmt_chan_find(c->channel)) { | |
811 | mutex_unlock(&mgmt_chan_list_lock); | |
812 | return -EALREADY; | |
813 | } | |
814 | ||
815 | list_add_tail(&c->list, &mgmt_chan_list); | |
816 | ||
817 | mutex_unlock(&mgmt_chan_list_lock); | |
818 | ||
819 | return 0; | |
820 | } | |
821 | EXPORT_SYMBOL(hci_mgmt_chan_register); | |
822 | ||
823 | void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c) | |
824 | { | |
825 | mutex_lock(&mgmt_chan_list_lock); | |
826 | list_del(&c->list); | |
827 | mutex_unlock(&mgmt_chan_list_lock); | |
828 | } | |
829 | EXPORT_SYMBOL(hci_mgmt_chan_unregister); | |
830 | ||
1da177e4 LT |
831 | static int hci_sock_release(struct socket *sock) |
832 | { | |
833 | struct sock *sk = sock->sk; | |
7b005bd3 | 834 | struct hci_dev *hdev; |
249fa169 | 835 | struct sk_buff *skb; |
1da177e4 LT |
836 | |
837 | BT_DBG("sock %p sk %p", sock, sk); | |
838 | ||
839 | if (!sk) | |
840 | return 0; | |
841 | ||
11eb85ec DC |
842 | lock_sock(sk); |
843 | ||
70ecce91 MH |
844 | switch (hci_pi(sk)->channel) { |
845 | case HCI_CHANNEL_MONITOR: | |
cd82e61c | 846 | atomic_dec(&monitor_promisc); |
70ecce91 | 847 | break; |
f81f5b2d | 848 | case HCI_CHANNEL_RAW: |
aa1638dd | 849 | case HCI_CHANNEL_USER: |
70ecce91 | 850 | case HCI_CHANNEL_CONTROL: |
249fa169 MH |
851 | /* Send event to monitor */ |
852 | skb = create_monitor_ctrl_close(sk); | |
853 | if (skb) { | |
854 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, | |
855 | HCI_SOCK_TRUSTED, NULL); | |
856 | kfree_skb(skb); | |
857 | } | |
858 | ||
df1cb87a | 859 | hci_sock_free_cookie(sk); |
70ecce91 MH |
860 | break; |
861 | } | |
cd82e61c | 862 | |
1da177e4 LT |
863 | bt_sock_unlink(&hci_sk_list, sk); |
864 | ||
e20a2e9c | 865 | hdev = hci_pi(sk)->hdev; |
1da177e4 | 866 | if (hdev) { |
23500189 | 867 | if (hci_pi(sk)->channel == HCI_CHANNEL_USER) { |
9332ef9d | 868 | /* When releasing a user channel exclusive access, |
6b3cc1db SF |
869 | * call hci_dev_do_close directly instead of calling |
870 | * hci_dev_close to ensure the exclusive access will | |
871 | * be released and the controller brought back down. | |
872 | * | |
873 | * The checking of HCI_AUTO_OFF is not needed in this | |
874 | * case since it will have been cleared already when | |
875 | * opening the user channel. | |
876 | */ | |
877 | hci_dev_do_close(hdev); | |
9380f9ea LP |
878 | hci_dev_clear_flag(hdev, HCI_USER_CHANNEL); |
879 | mgmt_index_added(hdev); | |
23500189 MH |
880 | } |
881 | ||
1da177e4 LT |
882 | atomic_dec(&hdev->promisc); |
883 | hci_dev_put(hdev); | |
884 | } | |
885 | ||
886 | sock_orphan(sk); | |
887 | ||
888 | skb_queue_purge(&sk->sk_receive_queue); | |
889 | skb_queue_purge(&sk->sk_write_queue); | |
890 | ||
11eb85ec | 891 | release_sock(sk); |
1da177e4 LT |
892 | sock_put(sk); |
893 | return 0; | |
894 | } | |
895 | ||
b2a66aad | 896 | static int hci_sock_blacklist_add(struct hci_dev *hdev, void __user *arg) |
f0358568 JH |
897 | { |
898 | bdaddr_t bdaddr; | |
5e762444 | 899 | int err; |
f0358568 JH |
900 | |
901 | if (copy_from_user(&bdaddr, arg, sizeof(bdaddr))) | |
902 | return -EFAULT; | |
903 | ||
09fd0de5 | 904 | hci_dev_lock(hdev); |
5e762444 | 905 | |
dcc36c16 | 906 | err = hci_bdaddr_list_add(&hdev->blacklist, &bdaddr, BDADDR_BREDR); |
5e762444 | 907 | |
09fd0de5 | 908 | hci_dev_unlock(hdev); |
5e762444 AJ |
909 | |
910 | return err; | |
f0358568 JH |
911 | } |
912 | ||
b2a66aad | 913 | static int hci_sock_blacklist_del(struct hci_dev *hdev, void __user *arg) |
f0358568 JH |
914 | { |
915 | bdaddr_t bdaddr; | |
5e762444 | 916 | int err; |
f0358568 JH |
917 | |
918 | if (copy_from_user(&bdaddr, arg, sizeof(bdaddr))) | |
919 | return -EFAULT; | |
920 | ||
09fd0de5 | 921 | hci_dev_lock(hdev); |
5e762444 | 922 | |
dcc36c16 | 923 | err = hci_bdaddr_list_del(&hdev->blacklist, &bdaddr, BDADDR_BREDR); |
5e762444 | 924 | |
09fd0de5 | 925 | hci_dev_unlock(hdev); |
5e762444 AJ |
926 | |
927 | return err; | |
f0358568 JH |
928 | } |
929 | ||
8e87d142 | 930 | /* Ioctls that require bound socket */ |
6039aa73 GP |
931 | static int hci_sock_bound_ioctl(struct sock *sk, unsigned int cmd, |
932 | unsigned long arg) | |
1da177e4 LT |
933 | { |
934 | struct hci_dev *hdev = hci_pi(sk)->hdev; | |
935 | ||
936 | if (!hdev) | |
937 | return -EBADFD; | |
938 | ||
d7a5a11d | 939 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) |
0736cfa8 MH |
940 | return -EBUSY; |
941 | ||
d7a5a11d | 942 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
fee746b0 MH |
943 | return -EOPNOTSUPP; |
944 | ||
ca8bee5d | 945 | if (hdev->dev_type != HCI_PRIMARY) |
5b69bef5 MH |
946 | return -EOPNOTSUPP; |
947 | ||
1da177e4 LT |
948 | switch (cmd) { |
949 | case HCISETRAW: | |
950 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 951 | return -EPERM; |
db596681 | 952 | return -EOPNOTSUPP; |
1da177e4 | 953 | |
1da177e4 | 954 | case HCIGETCONNINFO: |
8528d3f7 | 955 | return hci_get_conn_info(hdev, (void __user *)arg); |
40be492f MH |
956 | |
957 | case HCIGETAUTHINFO: | |
8528d3f7 | 958 | return hci_get_auth_info(hdev, (void __user *)arg); |
1da177e4 | 959 | |
f0358568 JH |
960 | case HCIBLOCKADDR: |
961 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 962 | return -EPERM; |
8528d3f7 | 963 | return hci_sock_blacklist_add(hdev, (void __user *)arg); |
f0358568 JH |
964 | |
965 | case HCIUNBLOCKADDR: | |
966 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 967 | return -EPERM; |
8528d3f7 | 968 | return hci_sock_blacklist_del(hdev, (void __user *)arg); |
1da177e4 | 969 | } |
0736cfa8 | 970 | |
324d36ed | 971 | return -ENOIOCTLCMD; |
1da177e4 LT |
972 | } |
973 | ||
8fc9ced3 GP |
974 | static int hci_sock_ioctl(struct socket *sock, unsigned int cmd, |
975 | unsigned long arg) | |
1da177e4 | 976 | { |
8528d3f7 | 977 | void __user *argp = (void __user *)arg; |
0736cfa8 | 978 | struct sock *sk = sock->sk; |
1da177e4 LT |
979 | int err; |
980 | ||
981 | BT_DBG("cmd %x arg %lx", cmd, arg); | |
982 | ||
c1c4f956 MH |
983 | lock_sock(sk); |
984 | ||
985 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) { | |
986 | err = -EBADFD; | |
987 | goto done; | |
988 | } | |
989 | ||
f81f5b2d MH |
990 | /* When calling an ioctl on an unbound raw socket, then ensure |
991 | * that the monitor gets informed. Ensure that the resulting event | |
992 | * is only send once by checking if the cookie exists or not. The | |
993 | * socket cookie will be only ever generated once for the lifetime | |
994 | * of a given socket. | |
995 | */ | |
996 | if (hci_sock_gen_cookie(sk)) { | |
997 | struct sk_buff *skb; | |
998 | ||
999 | if (capable(CAP_NET_ADMIN)) | |
1000 | hci_sock_set_flag(sk, HCI_SOCK_TRUSTED); | |
1001 | ||
1002 | /* Send event to monitor */ | |
1003 | skb = create_monitor_ctrl_open(sk); | |
1004 | if (skb) { | |
1005 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, | |
1006 | HCI_SOCK_TRUSTED, NULL); | |
1007 | kfree_skb(skb); | |
1008 | } | |
1009 | } | |
1010 | ||
c1c4f956 MH |
1011 | release_sock(sk); |
1012 | ||
1da177e4 LT |
1013 | switch (cmd) { |
1014 | case HCIGETDEVLIST: | |
1015 | return hci_get_dev_list(argp); | |
1016 | ||
1017 | case HCIGETDEVINFO: | |
1018 | return hci_get_dev_info(argp); | |
1019 | ||
1020 | case HCIGETCONNLIST: | |
1021 | return hci_get_conn_list(argp); | |
1022 | ||
1023 | case HCIDEVUP: | |
1024 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 1025 | return -EPERM; |
1da177e4 LT |
1026 | return hci_dev_open(arg); |
1027 | ||
1028 | case HCIDEVDOWN: | |
1029 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 1030 | return -EPERM; |
1da177e4 LT |
1031 | return hci_dev_close(arg); |
1032 | ||
1033 | case HCIDEVRESET: | |
1034 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 1035 | return -EPERM; |
1da177e4 LT |
1036 | return hci_dev_reset(arg); |
1037 | ||
1038 | case HCIDEVRESTAT: | |
1039 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 1040 | return -EPERM; |
1da177e4 LT |
1041 | return hci_dev_reset_stat(arg); |
1042 | ||
1043 | case HCISETSCAN: | |
1044 | case HCISETAUTH: | |
1045 | case HCISETENCRYPT: | |
1046 | case HCISETPTYPE: | |
1047 | case HCISETLINKPOL: | |
1048 | case HCISETLINKMODE: | |
1049 | case HCISETACLMTU: | |
1050 | case HCISETSCOMTU: | |
1051 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 1052 | return -EPERM; |
1da177e4 LT |
1053 | return hci_dev_cmd(cmd, argp); |
1054 | ||
1055 | case HCIINQUIRY: | |
1056 | return hci_inquiry(argp); | |
1da177e4 | 1057 | } |
c1c4f956 MH |
1058 | |
1059 | lock_sock(sk); | |
1060 | ||
1061 | err = hci_sock_bound_ioctl(sk, cmd, arg); | |
1062 | ||
1063 | done: | |
1064 | release_sock(sk); | |
1065 | return err; | |
1da177e4 LT |
1066 | } |
1067 | ||
7a6038b3 AB |
1068 | #ifdef CONFIG_COMPAT |
1069 | static int hci_sock_compat_ioctl(struct socket *sock, unsigned int cmd, | |
1070 | unsigned long arg) | |
1071 | { | |
1072 | switch (cmd) { | |
1073 | case HCIDEVUP: | |
1074 | case HCIDEVDOWN: | |
1075 | case HCIDEVRESET: | |
1076 | case HCIDEVRESTAT: | |
1077 | return hci_sock_ioctl(sock, cmd, arg); | |
1078 | } | |
1079 | ||
1080 | return hci_sock_ioctl(sock, cmd, (unsigned long)compat_ptr(arg)); | |
1081 | } | |
1082 | #endif | |
1083 | ||
8fc9ced3 GP |
1084 | static int hci_sock_bind(struct socket *sock, struct sockaddr *addr, |
1085 | int addr_len) | |
1da177e4 | 1086 | { |
0381101f | 1087 | struct sockaddr_hci haddr; |
1da177e4 LT |
1088 | struct sock *sk = sock->sk; |
1089 | struct hci_dev *hdev = NULL; | |
f4cdbb3f | 1090 | struct sk_buff *skb; |
0381101f | 1091 | int len, err = 0; |
1da177e4 LT |
1092 | |
1093 | BT_DBG("sock %p sk %p", sock, sk); | |
1094 | ||
0381101f JH |
1095 | if (!addr) |
1096 | return -EINVAL; | |
1097 | ||
1098 | memset(&haddr, 0, sizeof(haddr)); | |
1099 | len = min_t(unsigned int, sizeof(haddr), addr_len); | |
1100 | memcpy(&haddr, addr, len); | |
1101 | ||
1102 | if (haddr.hci_family != AF_BLUETOOTH) | |
1103 | return -EINVAL; | |
1104 | ||
1da177e4 LT |
1105 | lock_sock(sk); |
1106 | ||
7cc2ade2 | 1107 | if (sk->sk_state == BT_BOUND) { |
1da177e4 LT |
1108 | err = -EALREADY; |
1109 | goto done; | |
1110 | } | |
1111 | ||
7cc2ade2 MH |
1112 | switch (haddr.hci_channel) { |
1113 | case HCI_CHANNEL_RAW: | |
1114 | if (hci_pi(sk)->hdev) { | |
1115 | err = -EALREADY; | |
1da177e4 LT |
1116 | goto done; |
1117 | } | |
1118 | ||
7cc2ade2 MH |
1119 | if (haddr.hci_dev != HCI_DEV_NONE) { |
1120 | hdev = hci_dev_get(haddr.hci_dev); | |
1121 | if (!hdev) { | |
1122 | err = -ENODEV; | |
1123 | goto done; | |
1124 | } | |
1125 | ||
1126 | atomic_inc(&hdev->promisc); | |
1127 | } | |
1128 | ||
5a6d2cf5 | 1129 | hci_pi(sk)->channel = haddr.hci_channel; |
f81f5b2d | 1130 | |
f4cdbb3f MH |
1131 | if (!hci_sock_gen_cookie(sk)) { |
1132 | /* In the case when a cookie has already been assigned, | |
1133 | * then there has been already an ioctl issued against | |
1134 | * an unbound socket and with that triggerd an open | |
1135 | * notification. Send a close notification first to | |
1136 | * allow the state transition to bounded. | |
1137 | */ | |
1138 | skb = create_monitor_ctrl_close(sk); | |
f81f5b2d MH |
1139 | if (skb) { |
1140 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, | |
1141 | HCI_SOCK_TRUSTED, NULL); | |
1142 | kfree_skb(skb); | |
1143 | } | |
1144 | } | |
f4cdbb3f MH |
1145 | |
1146 | if (capable(CAP_NET_ADMIN)) | |
1147 | hci_sock_set_flag(sk, HCI_SOCK_TRUSTED); | |
1148 | ||
1149 | hci_pi(sk)->hdev = hdev; | |
1150 | ||
1151 | /* Send event to monitor */ | |
1152 | skb = create_monitor_ctrl_open(sk); | |
1153 | if (skb) { | |
1154 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, | |
1155 | HCI_SOCK_TRUSTED, NULL); | |
1156 | kfree_skb(skb); | |
1157 | } | |
7cc2ade2 MH |
1158 | break; |
1159 | ||
23500189 MH |
1160 | case HCI_CHANNEL_USER: |
1161 | if (hci_pi(sk)->hdev) { | |
1162 | err = -EALREADY; | |
1163 | goto done; | |
1164 | } | |
1165 | ||
1166 | if (haddr.hci_dev == HCI_DEV_NONE) { | |
1167 | err = -EINVAL; | |
1168 | goto done; | |
1169 | } | |
1170 | ||
10a8b86f | 1171 | if (!capable(CAP_NET_ADMIN)) { |
23500189 MH |
1172 | err = -EPERM; |
1173 | goto done; | |
1174 | } | |
1175 | ||
1176 | hdev = hci_dev_get(haddr.hci_dev); | |
1177 | if (!hdev) { | |
1178 | err = -ENODEV; | |
1179 | goto done; | |
1180 | } | |
1181 | ||
781f899f | 1182 | if (test_bit(HCI_INIT, &hdev->flags) || |
d7a5a11d | 1183 | hci_dev_test_flag(hdev, HCI_SETUP) || |
781f899f MH |
1184 | hci_dev_test_flag(hdev, HCI_CONFIG) || |
1185 | (!hci_dev_test_flag(hdev, HCI_AUTO_OFF) && | |
1186 | test_bit(HCI_UP, &hdev->flags))) { | |
23500189 MH |
1187 | err = -EBUSY; |
1188 | hci_dev_put(hdev); | |
1189 | goto done; | |
1190 | } | |
1191 | ||
238be788 | 1192 | if (hci_dev_test_and_set_flag(hdev, HCI_USER_CHANNEL)) { |
23500189 MH |
1193 | err = -EUSERS; |
1194 | hci_dev_put(hdev); | |
1195 | goto done; | |
1196 | } | |
1197 | ||
0602a8ad | 1198 | mgmt_index_removed(hdev); |
23500189 MH |
1199 | |
1200 | err = hci_dev_open(hdev->id); | |
1201 | if (err) { | |
781f899f MH |
1202 | if (err == -EALREADY) { |
1203 | /* In case the transport is already up and | |
1204 | * running, clear the error here. | |
1205 | * | |
9332ef9d | 1206 | * This can happen when opening a user |
781f899f MH |
1207 | * channel and HCI_AUTO_OFF grace period |
1208 | * is still active. | |
1209 | */ | |
1210 | err = 0; | |
1211 | } else { | |
1212 | hci_dev_clear_flag(hdev, HCI_USER_CHANNEL); | |
1213 | mgmt_index_added(hdev); | |
1214 | hci_dev_put(hdev); | |
1215 | goto done; | |
1216 | } | |
23500189 MH |
1217 | } |
1218 | ||
5a6d2cf5 | 1219 | hci_pi(sk)->channel = haddr.hci_channel; |
aa1638dd MH |
1220 | |
1221 | if (!hci_sock_gen_cookie(sk)) { | |
1222 | /* In the case when a cookie has already been assigned, | |
1223 | * this socket will transition from a raw socket into | |
9332ef9d | 1224 | * a user channel socket. For a clean transition, send |
aa1638dd MH |
1225 | * the close notification first. |
1226 | */ | |
1227 | skb = create_monitor_ctrl_close(sk); | |
1228 | if (skb) { | |
1229 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, | |
1230 | HCI_SOCK_TRUSTED, NULL); | |
1231 | kfree_skb(skb); | |
1232 | } | |
1233 | } | |
1234 | ||
1235 | /* The user channel is restricted to CAP_NET_ADMIN | |
1236 | * capabilities and with that implicitly trusted. | |
1237 | */ | |
1238 | hci_sock_set_flag(sk, HCI_SOCK_TRUSTED); | |
1239 | ||
23500189 | 1240 | hci_pi(sk)->hdev = hdev; |
5a6d2cf5 | 1241 | |
aa1638dd MH |
1242 | /* Send event to monitor */ |
1243 | skb = create_monitor_ctrl_open(sk); | |
1244 | if (skb) { | |
1245 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, | |
1246 | HCI_SOCK_TRUSTED, NULL); | |
1247 | kfree_skb(skb); | |
1248 | } | |
1249 | ||
5a6d2cf5 | 1250 | atomic_inc(&hdev->promisc); |
23500189 MH |
1251 | break; |
1252 | ||
cd82e61c MH |
1253 | case HCI_CHANNEL_MONITOR: |
1254 | if (haddr.hci_dev != HCI_DEV_NONE) { | |
1255 | err = -EINVAL; | |
1256 | goto done; | |
1257 | } | |
1258 | ||
1259 | if (!capable(CAP_NET_RAW)) { | |
1260 | err = -EPERM; | |
1261 | goto done; | |
1262 | } | |
1263 | ||
5a6d2cf5 MH |
1264 | hci_pi(sk)->channel = haddr.hci_channel; |
1265 | ||
50ebc055 MH |
1266 | /* The monitor interface is restricted to CAP_NET_RAW |
1267 | * capabilities and with that implicitly trusted. | |
1268 | */ | |
1269 | hci_sock_set_flag(sk, HCI_SOCK_TRUSTED); | |
1270 | ||
787b306c JB |
1271 | send_monitor_note(sk, "Linux version %s (%s)", |
1272 | init_utsname()->release, | |
1273 | init_utsname()->machine); | |
9e8305b3 MH |
1274 | send_monitor_note(sk, "Bluetooth subsystem version %u.%u", |
1275 | BT_SUBSYS_VERSION, BT_SUBSYS_REVISION); | |
cd82e61c | 1276 | send_monitor_replay(sk); |
249fa169 | 1277 | send_monitor_control_replay(sk); |
cd82e61c MH |
1278 | |
1279 | atomic_inc(&monitor_promisc); | |
1280 | break; | |
1281 | ||
ac714949 MH |
1282 | case HCI_CHANNEL_LOGGING: |
1283 | if (haddr.hci_dev != HCI_DEV_NONE) { | |
1284 | err = -EINVAL; | |
1285 | goto done; | |
1286 | } | |
1287 | ||
1288 | if (!capable(CAP_NET_ADMIN)) { | |
1289 | err = -EPERM; | |
1290 | goto done; | |
1291 | } | |
5a6d2cf5 MH |
1292 | |
1293 | hci_pi(sk)->channel = haddr.hci_channel; | |
ac714949 MH |
1294 | break; |
1295 | ||
7cc2ade2 | 1296 | default: |
801c1e8d JH |
1297 | if (!hci_mgmt_chan_find(haddr.hci_channel)) { |
1298 | err = -EINVAL; | |
1299 | goto done; | |
1300 | } | |
1301 | ||
1302 | if (haddr.hci_dev != HCI_DEV_NONE) { | |
1303 | err = -EINVAL; | |
1304 | goto done; | |
1305 | } | |
1306 | ||
1195fbb8 MH |
1307 | /* Users with CAP_NET_ADMIN capabilities are allowed |
1308 | * access to all management commands and events. For | |
1309 | * untrusted users the interface is restricted and | |
1310 | * also only untrusted events are sent. | |
50ebc055 | 1311 | */ |
1195fbb8 MH |
1312 | if (capable(CAP_NET_ADMIN)) |
1313 | hci_sock_set_flag(sk, HCI_SOCK_TRUSTED); | |
50ebc055 | 1314 | |
5a6d2cf5 MH |
1315 | hci_pi(sk)->channel = haddr.hci_channel; |
1316 | ||
f9207338 MH |
1317 | /* At the moment the index and unconfigured index events |
1318 | * are enabled unconditionally. Setting them on each | |
1319 | * socket when binding keeps this functionality. They | |
1320 | * however might be cleared later and then sending of these | |
1321 | * events will be disabled, but that is then intentional. | |
f6b7712e MH |
1322 | * |
1323 | * This also enables generic events that are safe to be | |
1324 | * received by untrusted users. Example for such events | |
1325 | * are changes to settings, class of device, name etc. | |
f9207338 | 1326 | */ |
5a6d2cf5 | 1327 | if (hci_pi(sk)->channel == HCI_CHANNEL_CONTROL) { |
f4cdbb3f MH |
1328 | if (!hci_sock_gen_cookie(sk)) { |
1329 | /* In the case when a cookie has already been | |
1330 | * assigned, this socket will transtion from | |
1331 | * a raw socket into a control socket. To | |
1332 | * allow for a clean transtion, send the | |
1333 | * close notification first. | |
1334 | */ | |
1335 | skb = create_monitor_ctrl_close(sk); | |
1336 | if (skb) { | |
1337 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, | |
1338 | HCI_SOCK_TRUSTED, NULL); | |
1339 | kfree_skb(skb); | |
1340 | } | |
1341 | } | |
70ecce91 | 1342 | |
249fa169 MH |
1343 | /* Send event to monitor */ |
1344 | skb = create_monitor_ctrl_open(sk); | |
1345 | if (skb) { | |
1346 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, | |
1347 | HCI_SOCK_TRUSTED, NULL); | |
1348 | kfree_skb(skb); | |
1349 | } | |
1350 | ||
f9207338 MH |
1351 | hci_sock_set_flag(sk, HCI_MGMT_INDEX_EVENTS); |
1352 | hci_sock_set_flag(sk, HCI_MGMT_UNCONF_INDEX_EVENTS); | |
5504c3a3 MH |
1353 | hci_sock_set_flag(sk, HCI_MGMT_OPTION_EVENTS); |
1354 | hci_sock_set_flag(sk, HCI_MGMT_SETTING_EVENTS); | |
1355 | hci_sock_set_flag(sk, HCI_MGMT_DEV_CLASS_EVENTS); | |
1356 | hci_sock_set_flag(sk, HCI_MGMT_LOCAL_NAME_EVENTS); | |
f9207338 | 1357 | } |
801c1e8d | 1358 | break; |
1da177e4 LT |
1359 | } |
1360 | ||
1da177e4 LT |
1361 | sk->sk_state = BT_BOUND; |
1362 | ||
1363 | done: | |
1364 | release_sock(sk); | |
1365 | return err; | |
1366 | } | |
1367 | ||
8fc9ced3 | 1368 | static int hci_sock_getname(struct socket *sock, struct sockaddr *addr, |
9b2c45d4 | 1369 | int peer) |
1da177e4 | 1370 | { |
8528d3f7 | 1371 | struct sockaddr_hci *haddr = (struct sockaddr_hci *)addr; |
1da177e4 | 1372 | struct sock *sk = sock->sk; |
9d4b68b2 MH |
1373 | struct hci_dev *hdev; |
1374 | int err = 0; | |
1da177e4 LT |
1375 | |
1376 | BT_DBG("sock %p sk %p", sock, sk); | |
1377 | ||
06f43cbc MH |
1378 | if (peer) |
1379 | return -EOPNOTSUPP; | |
1380 | ||
1da177e4 LT |
1381 | lock_sock(sk); |
1382 | ||
9d4b68b2 MH |
1383 | hdev = hci_pi(sk)->hdev; |
1384 | if (!hdev) { | |
1385 | err = -EBADFD; | |
1386 | goto done; | |
1387 | } | |
1388 | ||
1da177e4 | 1389 | haddr->hci_family = AF_BLUETOOTH; |
7b005bd3 | 1390 | haddr->hci_dev = hdev->id; |
9d4b68b2 | 1391 | haddr->hci_channel= hci_pi(sk)->channel; |
9b2c45d4 | 1392 | err = sizeof(*haddr); |
1da177e4 | 1393 | |
9d4b68b2 | 1394 | done: |
1da177e4 | 1395 | release_sock(sk); |
9d4b68b2 | 1396 | return err; |
1da177e4 LT |
1397 | } |
1398 | ||
6039aa73 GP |
1399 | static void hci_sock_cmsg(struct sock *sk, struct msghdr *msg, |
1400 | struct sk_buff *skb) | |
1da177e4 LT |
1401 | { |
1402 | __u32 mask = hci_pi(sk)->cmsg_mask; | |
1403 | ||
0d48d939 MH |
1404 | if (mask & HCI_CMSG_DIR) { |
1405 | int incoming = bt_cb(skb)->incoming; | |
8fc9ced3 GP |
1406 | put_cmsg(msg, SOL_HCI, HCI_CMSG_DIR, sizeof(incoming), |
1407 | &incoming); | |
0d48d939 | 1408 | } |
1da177e4 | 1409 | |
a61bbcf2 | 1410 | if (mask & HCI_CMSG_TSTAMP) { |
f6e623a6 | 1411 | #ifdef CONFIG_COMPAT |
13c6ee2a | 1412 | struct old_timeval32 ctv; |
f6e623a6 | 1413 | #endif |
13c6ee2a | 1414 | struct __kernel_old_timeval tv; |
767c5eb5 MH |
1415 | void *data; |
1416 | int len; | |
a61bbcf2 PM |
1417 | |
1418 | skb_get_timestamp(skb, &tv); | |
767c5eb5 | 1419 | |
1da97f83 DM |
1420 | data = &tv; |
1421 | len = sizeof(tv); | |
1422 | #ifdef CONFIG_COMPAT | |
da88cea1 L |
1423 | if (!COMPAT_USE_64BIT_TIME && |
1424 | (msg->msg_flags & MSG_CMSG_COMPAT)) { | |
767c5eb5 MH |
1425 | ctv.tv_sec = tv.tv_sec; |
1426 | ctv.tv_usec = tv.tv_usec; | |
1427 | data = &ctv; | |
1428 | len = sizeof(ctv); | |
767c5eb5 | 1429 | } |
1da97f83 | 1430 | #endif |
767c5eb5 MH |
1431 | |
1432 | put_cmsg(msg, SOL_HCI, HCI_CMSG_TSTAMP, len, data); | |
a61bbcf2 | 1433 | } |
1da177e4 | 1434 | } |
8e87d142 | 1435 | |
8528d3f7 MH |
1436 | static int hci_sock_recvmsg(struct socket *sock, struct msghdr *msg, |
1437 | size_t len, int flags) | |
1da177e4 LT |
1438 | { |
1439 | int noblock = flags & MSG_DONTWAIT; | |
1440 | struct sock *sk = sock->sk; | |
1441 | struct sk_buff *skb; | |
1442 | int copied, err; | |
83871f8c | 1443 | unsigned int skblen; |
1da177e4 LT |
1444 | |
1445 | BT_DBG("sock %p, sk %p", sock, sk); | |
1446 | ||
d94a6104 | 1447 | if (flags & MSG_OOB) |
1da177e4 LT |
1448 | return -EOPNOTSUPP; |
1449 | ||
ac714949 MH |
1450 | if (hci_pi(sk)->channel == HCI_CHANNEL_LOGGING) |
1451 | return -EOPNOTSUPP; | |
1452 | ||
1da177e4 LT |
1453 | if (sk->sk_state == BT_CLOSED) |
1454 | return 0; | |
1455 | ||
70f23020 AE |
1456 | skb = skb_recv_datagram(sk, flags, noblock, &err); |
1457 | if (!skb) | |
1da177e4 LT |
1458 | return err; |
1459 | ||
83871f8c | 1460 | skblen = skb->len; |
1da177e4 LT |
1461 | copied = skb->len; |
1462 | if (len < copied) { | |
1463 | msg->msg_flags |= MSG_TRUNC; | |
1464 | copied = len; | |
1465 | } | |
1466 | ||
badff6d0 | 1467 | skb_reset_transport_header(skb); |
51f3d02b | 1468 | err = skb_copy_datagram_msg(skb, 0, msg, copied); |
1da177e4 | 1469 | |
3a208627 MH |
1470 | switch (hci_pi(sk)->channel) { |
1471 | case HCI_CHANNEL_RAW: | |
1472 | hci_sock_cmsg(sk, msg, skb); | |
1473 | break; | |
23500189 | 1474 | case HCI_CHANNEL_USER: |
cd82e61c MH |
1475 | case HCI_CHANNEL_MONITOR: |
1476 | sock_recv_timestamp(msg, sk, skb); | |
1477 | break; | |
801c1e8d JH |
1478 | default: |
1479 | if (hci_mgmt_chan_find(hci_pi(sk)->channel)) | |
1480 | sock_recv_timestamp(msg, sk, skb); | |
1481 | break; | |
3a208627 | 1482 | } |
1da177e4 LT |
1483 | |
1484 | skb_free_datagram(sk, skb); | |
1485 | ||
4f34228b | 1486 | if (flags & MSG_TRUNC) |
83871f8c DK |
1487 | copied = skblen; |
1488 | ||
1da177e4 LT |
1489 | return err ? : copied; |
1490 | } | |
1491 | ||
fa4335d7 JH |
1492 | static int hci_mgmt_cmd(struct hci_mgmt_chan *chan, struct sock *sk, |
1493 | struct msghdr *msg, size_t msglen) | |
1494 | { | |
1495 | void *buf; | |
1496 | u8 *cp; | |
1497 | struct mgmt_hdr *hdr; | |
1498 | u16 opcode, index, len; | |
1499 | struct hci_dev *hdev = NULL; | |
1500 | const struct hci_mgmt_handler *handler; | |
1501 | bool var_len, no_hdev; | |
1502 | int err; | |
1503 | ||
1504 | BT_DBG("got %zu bytes", msglen); | |
1505 | ||
1506 | if (msglen < sizeof(*hdr)) | |
1507 | return -EINVAL; | |
1508 | ||
1509 | buf = kmalloc(msglen, GFP_KERNEL); | |
1510 | if (!buf) | |
1511 | return -ENOMEM; | |
1512 | ||
1513 | if (memcpy_from_msg(buf, msg, msglen)) { | |
1514 | err = -EFAULT; | |
1515 | goto done; | |
1516 | } | |
1517 | ||
1518 | hdr = buf; | |
1519 | opcode = __le16_to_cpu(hdr->opcode); | |
1520 | index = __le16_to_cpu(hdr->index); | |
1521 | len = __le16_to_cpu(hdr->len); | |
1522 | ||
1523 | if (len != msglen - sizeof(*hdr)) { | |
1524 | err = -EINVAL; | |
1525 | goto done; | |
1526 | } | |
1527 | ||
38ceaa00 MH |
1528 | if (chan->channel == HCI_CHANNEL_CONTROL) { |
1529 | struct sk_buff *skb; | |
1530 | ||
1531 | /* Send event to monitor */ | |
1532 | skb = create_monitor_ctrl_command(sk, index, opcode, len, | |
1533 | buf + sizeof(*hdr)); | |
1534 | if (skb) { | |
1535 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, | |
1536 | HCI_SOCK_TRUSTED, NULL); | |
1537 | kfree_skb(skb); | |
1538 | } | |
1539 | } | |
1540 | ||
fa4335d7 JH |
1541 | if (opcode >= chan->handler_count || |
1542 | chan->handlers[opcode].func == NULL) { | |
1543 | BT_DBG("Unknown op %u", opcode); | |
1544 | err = mgmt_cmd_status(sk, index, opcode, | |
1545 | MGMT_STATUS_UNKNOWN_COMMAND); | |
1546 | goto done; | |
1547 | } | |
1548 | ||
1549 | handler = &chan->handlers[opcode]; | |
1550 | ||
1551 | if (!hci_sock_test_flag(sk, HCI_SOCK_TRUSTED) && | |
1552 | !(handler->flags & HCI_MGMT_UNTRUSTED)) { | |
1553 | err = mgmt_cmd_status(sk, index, opcode, | |
1554 | MGMT_STATUS_PERMISSION_DENIED); | |
1555 | goto done; | |
1556 | } | |
1557 | ||
1558 | if (index != MGMT_INDEX_NONE) { | |
1559 | hdev = hci_dev_get(index); | |
1560 | if (!hdev) { | |
1561 | err = mgmt_cmd_status(sk, index, opcode, | |
1562 | MGMT_STATUS_INVALID_INDEX); | |
1563 | goto done; | |
1564 | } | |
1565 | ||
1566 | if (hci_dev_test_flag(hdev, HCI_SETUP) || | |
1567 | hci_dev_test_flag(hdev, HCI_CONFIG) || | |
1568 | hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { | |
1569 | err = mgmt_cmd_status(sk, index, opcode, | |
1570 | MGMT_STATUS_INVALID_INDEX); | |
1571 | goto done; | |
1572 | } | |
1573 | ||
1574 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && | |
1575 | !(handler->flags & HCI_MGMT_UNCONFIGURED)) { | |
1576 | err = mgmt_cmd_status(sk, index, opcode, | |
1577 | MGMT_STATUS_INVALID_INDEX); | |
1578 | goto done; | |
1579 | } | |
1580 | } | |
1581 | ||
d5cc6626 MH |
1582 | if (!(handler->flags & HCI_MGMT_HDEV_OPTIONAL)) { |
1583 | no_hdev = (handler->flags & HCI_MGMT_NO_HDEV); | |
1584 | if (no_hdev != !hdev) { | |
1585 | err = mgmt_cmd_status(sk, index, opcode, | |
1586 | MGMT_STATUS_INVALID_INDEX); | |
1587 | goto done; | |
1588 | } | |
fa4335d7 JH |
1589 | } |
1590 | ||
1591 | var_len = (handler->flags & HCI_MGMT_VAR_LEN); | |
1592 | if ((var_len && len < handler->data_len) || | |
1593 | (!var_len && len != handler->data_len)) { | |
1594 | err = mgmt_cmd_status(sk, index, opcode, | |
1595 | MGMT_STATUS_INVALID_PARAMS); | |
1596 | goto done; | |
1597 | } | |
1598 | ||
1599 | if (hdev && chan->hdev_init) | |
1600 | chan->hdev_init(sk, hdev); | |
1601 | ||
1602 | cp = buf + sizeof(*hdr); | |
1603 | ||
1604 | err = handler->func(sk, hdev, cp, len); | |
1605 | if (err < 0) | |
1606 | goto done; | |
1607 | ||
1608 | err = msglen; | |
1609 | ||
1610 | done: | |
1611 | if (hdev) | |
1612 | hci_dev_put(hdev); | |
1613 | ||
1614 | kfree(buf); | |
1615 | return err; | |
1616 | } | |
1617 | ||
ac714949 MH |
1618 | static int hci_logging_frame(struct sock *sk, struct msghdr *msg, int len) |
1619 | { | |
1620 | struct hci_mon_hdr *hdr; | |
1621 | struct sk_buff *skb; | |
1622 | struct hci_dev *hdev; | |
1623 | u16 index; | |
1624 | int err; | |
1625 | ||
1626 | /* The logging frame consists at minimum of the standard header, | |
1627 | * the priority byte, the ident length byte and at least one string | |
1628 | * terminator NUL byte. Anything shorter are invalid packets. | |
1629 | */ | |
1630 | if (len < sizeof(*hdr) + 3) | |
1631 | return -EINVAL; | |
1632 | ||
1633 | skb = bt_skb_send_alloc(sk, len, msg->msg_flags & MSG_DONTWAIT, &err); | |
1634 | if (!skb) | |
1635 | return err; | |
1636 | ||
1637 | if (memcpy_from_msg(skb_put(skb, len), msg, len)) { | |
1638 | err = -EFAULT; | |
1639 | goto drop; | |
1640 | } | |
1641 | ||
1642 | hdr = (void *)skb->data; | |
1643 | ||
1644 | if (__le16_to_cpu(hdr->len) != len - sizeof(*hdr)) { | |
1645 | err = -EINVAL; | |
1646 | goto drop; | |
1647 | } | |
1648 | ||
1649 | if (__le16_to_cpu(hdr->opcode) == 0x0000) { | |
1650 | __u8 priority = skb->data[sizeof(*hdr)]; | |
1651 | __u8 ident_len = skb->data[sizeof(*hdr) + 1]; | |
1652 | ||
1653 | /* Only the priorities 0-7 are valid and with that any other | |
1654 | * value results in an invalid packet. | |
1655 | * | |
1656 | * The priority byte is followed by an ident length byte and | |
1657 | * the NUL terminated ident string. Check that the ident | |
1658 | * length is not overflowing the packet and also that the | |
1659 | * ident string itself is NUL terminated. In case the ident | |
1660 | * length is zero, the length value actually doubles as NUL | |
1661 | * terminator identifier. | |
1662 | * | |
1663 | * The message follows the ident string (if present) and | |
1664 | * must be NUL terminated. Otherwise it is not a valid packet. | |
1665 | */ | |
1666 | if (priority > 7 || skb->data[len - 1] != 0x00 || | |
1667 | ident_len > len - sizeof(*hdr) - 3 || | |
1668 | skb->data[sizeof(*hdr) + ident_len + 1] != 0x00) { | |
1669 | err = -EINVAL; | |
1670 | goto drop; | |
1671 | } | |
1672 | } else { | |
1673 | err = -EINVAL; | |
1674 | goto drop; | |
1675 | } | |
1676 | ||
1677 | index = __le16_to_cpu(hdr->index); | |
1678 | ||
1679 | if (index != MGMT_INDEX_NONE) { | |
1680 | hdev = hci_dev_get(index); | |
1681 | if (!hdev) { | |
1682 | err = -ENODEV; | |
1683 | goto drop; | |
1684 | } | |
1685 | } else { | |
1686 | hdev = NULL; | |
1687 | } | |
1688 | ||
1689 | hdr->opcode = cpu_to_le16(HCI_MON_USER_LOGGING); | |
1690 | ||
1691 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, HCI_SOCK_TRUSTED, NULL); | |
1692 | err = len; | |
1693 | ||
1694 | if (hdev) | |
1695 | hci_dev_put(hdev); | |
1696 | ||
1697 | drop: | |
1698 | kfree_skb(skb); | |
1699 | return err; | |
1700 | } | |
1701 | ||
1b784140 YX |
1702 | static int hci_sock_sendmsg(struct socket *sock, struct msghdr *msg, |
1703 | size_t len) | |
1da177e4 LT |
1704 | { |
1705 | struct sock *sk = sock->sk; | |
801c1e8d | 1706 | struct hci_mgmt_chan *chan; |
1da177e4 LT |
1707 | struct hci_dev *hdev; |
1708 | struct sk_buff *skb; | |
1709 | int err; | |
1710 | ||
1711 | BT_DBG("sock %p sk %p", sock, sk); | |
1712 | ||
1713 | if (msg->msg_flags & MSG_OOB) | |
1714 | return -EOPNOTSUPP; | |
1715 | ||
ab89f0bd SJ |
1716 | if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_NOSIGNAL|MSG_ERRQUEUE| |
1717 | MSG_CMSG_COMPAT)) | |
1da177e4 LT |
1718 | return -EINVAL; |
1719 | ||
1720 | if (len < 4 || len > HCI_MAX_FRAME_SIZE) | |
1721 | return -EINVAL; | |
1722 | ||
1723 | lock_sock(sk); | |
1724 | ||
0381101f JH |
1725 | switch (hci_pi(sk)->channel) { |
1726 | case HCI_CHANNEL_RAW: | |
23500189 | 1727 | case HCI_CHANNEL_USER: |
0381101f | 1728 | break; |
cd82e61c MH |
1729 | case HCI_CHANNEL_MONITOR: |
1730 | err = -EOPNOTSUPP; | |
1731 | goto done; | |
ac714949 MH |
1732 | case HCI_CHANNEL_LOGGING: |
1733 | err = hci_logging_frame(sk, msg, len); | |
1734 | goto done; | |
0381101f | 1735 | default: |
801c1e8d JH |
1736 | mutex_lock(&mgmt_chan_list_lock); |
1737 | chan = __hci_mgmt_chan_find(hci_pi(sk)->channel); | |
1738 | if (chan) | |
fa4335d7 | 1739 | err = hci_mgmt_cmd(chan, sk, msg, len); |
801c1e8d JH |
1740 | else |
1741 | err = -EINVAL; | |
1742 | ||
1743 | mutex_unlock(&mgmt_chan_list_lock); | |
0381101f JH |
1744 | goto done; |
1745 | } | |
1746 | ||
70f23020 AE |
1747 | hdev = hci_pi(sk)->hdev; |
1748 | if (!hdev) { | |
1da177e4 LT |
1749 | err = -EBADFD; |
1750 | goto done; | |
1751 | } | |
1752 | ||
7e21addc MH |
1753 | if (!test_bit(HCI_UP, &hdev->flags)) { |
1754 | err = -ENETDOWN; | |
1755 | goto done; | |
1756 | } | |
1757 | ||
70f23020 AE |
1758 | skb = bt_skb_send_alloc(sk, len, msg->msg_flags & MSG_DONTWAIT, &err); |
1759 | if (!skb) | |
1da177e4 LT |
1760 | goto done; |
1761 | ||
6ce8e9ce | 1762 | if (memcpy_from_msg(skb_put(skb, len), msg, len)) { |
1da177e4 LT |
1763 | err = -EFAULT; |
1764 | goto drop; | |
1765 | } | |
1766 | ||
8528d3f7 | 1767 | hci_skb_pkt_type(skb) = skb->data[0]; |
1da177e4 | 1768 | skb_pull(skb, 1); |
1da177e4 | 1769 | |
1bc5ad16 MH |
1770 | if (hci_pi(sk)->channel == HCI_CHANNEL_USER) { |
1771 | /* No permission check is needed for user channel | |
1772 | * since that gets enforced when binding the socket. | |
1773 | * | |
1774 | * However check that the packet type is valid. | |
1775 | */ | |
d79f34e3 MH |
1776 | if (hci_skb_pkt_type(skb) != HCI_COMMAND_PKT && |
1777 | hci_skb_pkt_type(skb) != HCI_ACLDATA_PKT && | |
cc974003 MH |
1778 | hci_skb_pkt_type(skb) != HCI_SCODATA_PKT && |
1779 | hci_skb_pkt_type(skb) != HCI_ISODATA_PKT) { | |
1bc5ad16 MH |
1780 | err = -EINVAL; |
1781 | goto drop; | |
1782 | } | |
1783 | ||
1784 | skb_queue_tail(&hdev->raw_q, skb); | |
1785 | queue_work(hdev->workqueue, &hdev->tx_work); | |
d79f34e3 | 1786 | } else if (hci_skb_pkt_type(skb) == HCI_COMMAND_PKT) { |
83985319 | 1787 | u16 opcode = get_unaligned_le16(skb->data); |
1da177e4 LT |
1788 | u16 ogf = hci_opcode_ogf(opcode); |
1789 | u16 ocf = hci_opcode_ocf(opcode); | |
1790 | ||
1791 | if (((ogf > HCI_SFLT_MAX_OGF) || | |
3bb3c755 GP |
1792 | !hci_test_bit(ocf & HCI_FLT_OCF_BITS, |
1793 | &hci_sec_filter.ocf_mask[ogf])) && | |
1794 | !capable(CAP_NET_RAW)) { | |
1da177e4 LT |
1795 | err = -EPERM; |
1796 | goto drop; | |
1797 | } | |
1798 | ||
1982162b MH |
1799 | /* Since the opcode has already been extracted here, store |
1800 | * a copy of the value for later use by the drivers. | |
1801 | */ | |
1802 | hci_skb_opcode(skb) = opcode; | |
1803 | ||
fee746b0 | 1804 | if (ogf == 0x3f) { |
1da177e4 | 1805 | skb_queue_tail(&hdev->raw_q, skb); |
3eff45ea | 1806 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 1807 | } else { |
49c922bb | 1808 | /* Stand-alone HCI commands must be flagged as |
11714b3d JH |
1809 | * single-command requests. |
1810 | */ | |
44d27137 | 1811 | bt_cb(skb)->hci.req_flags |= HCI_REQ_START; |
11714b3d | 1812 | |
1da177e4 | 1813 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 1814 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
1815 | } |
1816 | } else { | |
1817 | if (!capable(CAP_NET_RAW)) { | |
1818 | err = -EPERM; | |
1819 | goto drop; | |
1820 | } | |
1821 | ||
d79f34e3 | 1822 | if (hci_skb_pkt_type(skb) != HCI_ACLDATA_PKT && |
cc974003 MH |
1823 | hci_skb_pkt_type(skb) != HCI_SCODATA_PKT && |
1824 | hci_skb_pkt_type(skb) != HCI_ISODATA_PKT) { | |
bb77543e MH |
1825 | err = -EINVAL; |
1826 | goto drop; | |
1827 | } | |
1828 | ||
1da177e4 | 1829 | skb_queue_tail(&hdev->raw_q, skb); |
3eff45ea | 1830 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 LT |
1831 | } |
1832 | ||
1833 | err = len; | |
1834 | ||
1835 | done: | |
1836 | release_sock(sk); | |
1837 | return err; | |
1838 | ||
1839 | drop: | |
1840 | kfree_skb(skb); | |
1841 | goto done; | |
1842 | } | |
1843 | ||
8fc9ced3 GP |
1844 | static int hci_sock_setsockopt(struct socket *sock, int level, int optname, |
1845 | char __user *optval, unsigned int len) | |
1da177e4 LT |
1846 | { |
1847 | struct hci_ufilter uf = { .opcode = 0 }; | |
1848 | struct sock *sk = sock->sk; | |
1849 | int err = 0, opt = 0; | |
1850 | ||
1851 | BT_DBG("sk %p, opt %d", sk, optname); | |
1852 | ||
47b0f573 MH |
1853 | if (level != SOL_HCI) |
1854 | return -ENOPROTOOPT; | |
1855 | ||
1da177e4 LT |
1856 | lock_sock(sk); |
1857 | ||
2f39cdb7 | 1858 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) { |
c2371e80 | 1859 | err = -EBADFD; |
2f39cdb7 MH |
1860 | goto done; |
1861 | } | |
1862 | ||
1da177e4 LT |
1863 | switch (optname) { |
1864 | case HCI_DATA_DIR: | |
1865 | if (get_user(opt, (int __user *)optval)) { | |
1866 | err = -EFAULT; | |
1867 | break; | |
1868 | } | |
1869 | ||
1870 | if (opt) | |
1871 | hci_pi(sk)->cmsg_mask |= HCI_CMSG_DIR; | |
1872 | else | |
1873 | hci_pi(sk)->cmsg_mask &= ~HCI_CMSG_DIR; | |
1874 | break; | |
1875 | ||
1876 | case HCI_TIME_STAMP: | |
1877 | if (get_user(opt, (int __user *)optval)) { | |
1878 | err = -EFAULT; | |
1879 | break; | |
1880 | } | |
1881 | ||
1882 | if (opt) | |
1883 | hci_pi(sk)->cmsg_mask |= HCI_CMSG_TSTAMP; | |
1884 | else | |
1885 | hci_pi(sk)->cmsg_mask &= ~HCI_CMSG_TSTAMP; | |
1886 | break; | |
1887 | ||
1888 | case HCI_FILTER: | |
0878b666 MH |
1889 | { |
1890 | struct hci_filter *f = &hci_pi(sk)->filter; | |
1891 | ||
1892 | uf.type_mask = f->type_mask; | |
1893 | uf.opcode = f->opcode; | |
1894 | uf.event_mask[0] = *((u32 *) f->event_mask + 0); | |
1895 | uf.event_mask[1] = *((u32 *) f->event_mask + 1); | |
1896 | } | |
1897 | ||
1da177e4 LT |
1898 | len = min_t(unsigned int, len, sizeof(uf)); |
1899 | if (copy_from_user(&uf, optval, len)) { | |
1900 | err = -EFAULT; | |
1901 | break; | |
1902 | } | |
1903 | ||
1904 | if (!capable(CAP_NET_RAW)) { | |
1905 | uf.type_mask &= hci_sec_filter.type_mask; | |
1906 | uf.event_mask[0] &= *((u32 *) hci_sec_filter.event_mask + 0); | |
1907 | uf.event_mask[1] &= *((u32 *) hci_sec_filter.event_mask + 1); | |
1908 | } | |
1909 | ||
1910 | { | |
1911 | struct hci_filter *f = &hci_pi(sk)->filter; | |
1912 | ||
1913 | f->type_mask = uf.type_mask; | |
1914 | f->opcode = uf.opcode; | |
1915 | *((u32 *) f->event_mask + 0) = uf.event_mask[0]; | |
1916 | *((u32 *) f->event_mask + 1) = uf.event_mask[1]; | |
1917 | } | |
8e87d142 | 1918 | break; |
1da177e4 LT |
1919 | |
1920 | default: | |
1921 | err = -ENOPROTOOPT; | |
1922 | break; | |
1923 | } | |
1924 | ||
2f39cdb7 | 1925 | done: |
1da177e4 LT |
1926 | release_sock(sk); |
1927 | return err; | |
1928 | } | |
1929 | ||
8fc9ced3 GP |
1930 | static int hci_sock_getsockopt(struct socket *sock, int level, int optname, |
1931 | char __user *optval, int __user *optlen) | |
1da177e4 LT |
1932 | { |
1933 | struct hci_ufilter uf; | |
1934 | struct sock *sk = sock->sk; | |
cedc5469 MH |
1935 | int len, opt, err = 0; |
1936 | ||
1937 | BT_DBG("sk %p, opt %d", sk, optname); | |
1da177e4 | 1938 | |
47b0f573 MH |
1939 | if (level != SOL_HCI) |
1940 | return -ENOPROTOOPT; | |
1941 | ||
1da177e4 LT |
1942 | if (get_user(len, optlen)) |
1943 | return -EFAULT; | |
1944 | ||
cedc5469 MH |
1945 | lock_sock(sk); |
1946 | ||
1947 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) { | |
c2371e80 | 1948 | err = -EBADFD; |
cedc5469 MH |
1949 | goto done; |
1950 | } | |
1951 | ||
1da177e4 LT |
1952 | switch (optname) { |
1953 | case HCI_DATA_DIR: | |
1954 | if (hci_pi(sk)->cmsg_mask & HCI_CMSG_DIR) | |
1955 | opt = 1; | |
8e87d142 | 1956 | else |
1da177e4 LT |
1957 | opt = 0; |
1958 | ||
1959 | if (put_user(opt, optval)) | |
cedc5469 | 1960 | err = -EFAULT; |
1da177e4 LT |
1961 | break; |
1962 | ||
1963 | case HCI_TIME_STAMP: | |
1964 | if (hci_pi(sk)->cmsg_mask & HCI_CMSG_TSTAMP) | |
1965 | opt = 1; | |
8e87d142 | 1966 | else |
1da177e4 LT |
1967 | opt = 0; |
1968 | ||
1969 | if (put_user(opt, optval)) | |
cedc5469 | 1970 | err = -EFAULT; |
1da177e4 LT |
1971 | break; |
1972 | ||
1973 | case HCI_FILTER: | |
1974 | { | |
1975 | struct hci_filter *f = &hci_pi(sk)->filter; | |
1976 | ||
e15ca9a0 | 1977 | memset(&uf, 0, sizeof(uf)); |
1da177e4 LT |
1978 | uf.type_mask = f->type_mask; |
1979 | uf.opcode = f->opcode; | |
1980 | uf.event_mask[0] = *((u32 *) f->event_mask + 0); | |
1981 | uf.event_mask[1] = *((u32 *) f->event_mask + 1); | |
1982 | } | |
1983 | ||
1984 | len = min_t(unsigned int, len, sizeof(uf)); | |
1985 | if (copy_to_user(optval, &uf, len)) | |
cedc5469 | 1986 | err = -EFAULT; |
1da177e4 LT |
1987 | break; |
1988 | ||
1989 | default: | |
cedc5469 | 1990 | err = -ENOPROTOOPT; |
1da177e4 LT |
1991 | break; |
1992 | } | |
1993 | ||
cedc5469 MH |
1994 | done: |
1995 | release_sock(sk); | |
1996 | return err; | |
1da177e4 LT |
1997 | } |
1998 | ||
90ddc4f0 | 1999 | static const struct proto_ops hci_sock_ops = { |
1da177e4 LT |
2000 | .family = PF_BLUETOOTH, |
2001 | .owner = THIS_MODULE, | |
2002 | .release = hci_sock_release, | |
2003 | .bind = hci_sock_bind, | |
2004 | .getname = hci_sock_getname, | |
2005 | .sendmsg = hci_sock_sendmsg, | |
2006 | .recvmsg = hci_sock_recvmsg, | |
2007 | .ioctl = hci_sock_ioctl, | |
7a6038b3 AB |
2008 | #ifdef CONFIG_COMPAT |
2009 | .compat_ioctl = hci_sock_compat_ioctl, | |
2010 | #endif | |
a11e1d43 | 2011 | .poll = datagram_poll, |
1da177e4 LT |
2012 | .listen = sock_no_listen, |
2013 | .shutdown = sock_no_shutdown, | |
2014 | .setsockopt = hci_sock_setsockopt, | |
2015 | .getsockopt = hci_sock_getsockopt, | |
2016 | .connect = sock_no_connect, | |
2017 | .socketpair = sock_no_socketpair, | |
2018 | .accept = sock_no_accept, | |
2019 | .mmap = sock_no_mmap | |
2020 | }; | |
2021 | ||
2022 | static struct proto hci_sk_proto = { | |
2023 | .name = "HCI", | |
2024 | .owner = THIS_MODULE, | |
2025 | .obj_size = sizeof(struct hci_pinfo) | |
2026 | }; | |
2027 | ||
3f378b68 EP |
2028 | static int hci_sock_create(struct net *net, struct socket *sock, int protocol, |
2029 | int kern) | |
1da177e4 LT |
2030 | { |
2031 | struct sock *sk; | |
2032 | ||
2033 | BT_DBG("sock %p", sock); | |
2034 | ||
2035 | if (sock->type != SOCK_RAW) | |
2036 | return -ESOCKTNOSUPPORT; | |
2037 | ||
2038 | sock->ops = &hci_sock_ops; | |
2039 | ||
11aa9c28 | 2040 | sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &hci_sk_proto, kern); |
1da177e4 LT |
2041 | if (!sk) |
2042 | return -ENOMEM; | |
2043 | ||
2044 | sock_init_data(sock, sk); | |
2045 | ||
2046 | sock_reset_flag(sk, SOCK_ZAPPED); | |
2047 | ||
2048 | sk->sk_protocol = protocol; | |
2049 | ||
2050 | sock->state = SS_UNCONNECTED; | |
2051 | sk->sk_state = BT_OPEN; | |
2052 | ||
2053 | bt_sock_link(&hci_sk_list, sk); | |
2054 | return 0; | |
2055 | } | |
2056 | ||
ec1b4cf7 | 2057 | static const struct net_proto_family hci_sock_family_ops = { |
1da177e4 LT |
2058 | .family = PF_BLUETOOTH, |
2059 | .owner = THIS_MODULE, | |
2060 | .create = hci_sock_create, | |
2061 | }; | |
2062 | ||
1da177e4 LT |
2063 | int __init hci_sock_init(void) |
2064 | { | |
2065 | int err; | |
2066 | ||
b0a8e282 MH |
2067 | BUILD_BUG_ON(sizeof(struct sockaddr_hci) > sizeof(struct sockaddr)); |
2068 | ||
1da177e4 LT |
2069 | err = proto_register(&hci_sk_proto, 0); |
2070 | if (err < 0) | |
2071 | return err; | |
2072 | ||
2073 | err = bt_sock_register(BTPROTO_HCI, &hci_sock_family_ops); | |
f7c86637 MY |
2074 | if (err < 0) { |
2075 | BT_ERR("HCI socket registration failed"); | |
1da177e4 | 2076 | goto error; |
f7c86637 MY |
2077 | } |
2078 | ||
b0316615 | 2079 | err = bt_procfs_init(&init_net, "hci", &hci_sk_list, NULL); |
f7c86637 MY |
2080 | if (err < 0) { |
2081 | BT_ERR("Failed to create HCI proc file"); | |
2082 | bt_sock_unregister(BTPROTO_HCI); | |
2083 | goto error; | |
2084 | } | |
1da177e4 | 2085 | |
1da177e4 LT |
2086 | BT_INFO("HCI socket layer initialized"); |
2087 | ||
2088 | return 0; | |
2089 | ||
2090 | error: | |
1da177e4 LT |
2091 | proto_unregister(&hci_sk_proto); |
2092 | return err; | |
2093 | } | |
2094 | ||
b7440a14 | 2095 | void hci_sock_cleanup(void) |
1da177e4 | 2096 | { |
f7c86637 | 2097 | bt_procfs_cleanup(&init_net, "hci"); |
5e9d7f86 | 2098 | bt_sock_unregister(BTPROTO_HCI); |
1da177e4 | 2099 | proto_unregister(&hci_sk_proto); |
1da177e4 | 2100 | } |