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. */ | |
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; | |
32929e1f | 55 | __u8 cmsg_mask; |
863def58 | 56 | unsigned short channel; |
6befc644 | 57 | unsigned long flags; |
70ecce91 MH |
58 | __u32 cookie; |
59 | char comm[TASK_COMM_LEN]; | |
09572fca | 60 | __u16 mtu; |
863def58 MH |
61 | }; |
62 | ||
e0448092 TH |
63 | static struct hci_dev *hci_hdev_from_sock(struct sock *sk) |
64 | { | |
65 | struct hci_dev *hdev = hci_pi(sk)->hdev; | |
66 | ||
67 | if (!hdev) | |
68 | return ERR_PTR(-EBADFD); | |
69 | if (hci_dev_test_flag(hdev, HCI_UNREGISTER)) | |
70 | return ERR_PTR(-EPIPE); | |
71 | return hdev; | |
72 | } | |
73 | ||
6befc644 MH |
74 | void hci_sock_set_flag(struct sock *sk, int nr) |
75 | { | |
76 | set_bit(nr, &hci_pi(sk)->flags); | |
77 | } | |
78 | ||
79 | void hci_sock_clear_flag(struct sock *sk, int nr) | |
80 | { | |
81 | clear_bit(nr, &hci_pi(sk)->flags); | |
82 | } | |
83 | ||
c85be545 MH |
84 | int hci_sock_test_flag(struct sock *sk, int nr) |
85 | { | |
86 | return test_bit(nr, &hci_pi(sk)->flags); | |
87 | } | |
88 | ||
d0f172b1 JH |
89 | unsigned short hci_sock_get_channel(struct sock *sk) |
90 | { | |
91 | return hci_pi(sk)->channel; | |
92 | } | |
93 | ||
70ecce91 MH |
94 | u32 hci_sock_get_cookie(struct sock *sk) |
95 | { | |
96 | return hci_pi(sk)->cookie; | |
97 | } | |
98 | ||
df1cb87a MH |
99 | static bool hci_sock_gen_cookie(struct sock *sk) |
100 | { | |
101 | int id = hci_pi(sk)->cookie; | |
102 | ||
103 | if (!id) { | |
104 | id = ida_simple_get(&sock_cookie_ida, 1, 0, GFP_KERNEL); | |
105 | if (id < 0) | |
106 | id = 0xffffffff; | |
107 | ||
108 | hci_pi(sk)->cookie = id; | |
109 | get_task_comm(hci_pi(sk)->comm, current); | |
110 | return true; | |
111 | } | |
112 | ||
113 | return false; | |
114 | } | |
115 | ||
116 | static void hci_sock_free_cookie(struct sock *sk) | |
117 | { | |
118 | int id = hci_pi(sk)->cookie; | |
119 | ||
120 | if (id) { | |
121 | hci_pi(sk)->cookie = 0xffffffff; | |
122 | ida_simple_remove(&sock_cookie_ida, id); | |
123 | } | |
124 | } | |
125 | ||
9391976a | 126 | static inline int hci_test_bit(int nr, const void *addr) |
1da177e4 | 127 | { |
9391976a | 128 | return *((const __u32 *) addr + (nr >> 5)) & ((__u32) 1 << (nr & 31)); |
1da177e4 LT |
129 | } |
130 | ||
131 | /* Security filter */ | |
3ad254f7 MH |
132 | #define HCI_SFLT_MAX_OGF 5 |
133 | ||
134 | struct hci_sec_filter { | |
135 | __u32 type_mask; | |
136 | __u32 event_mask[2]; | |
137 | __u32 ocf_mask[HCI_SFLT_MAX_OGF + 1][4]; | |
138 | }; | |
139 | ||
7e67c112 | 140 | static const struct hci_sec_filter hci_sec_filter = { |
1da177e4 LT |
141 | /* Packet types */ |
142 | 0x10, | |
143 | /* Events */ | |
dd7f5527 | 144 | { 0x1000d9fe, 0x0000b00c }, |
1da177e4 LT |
145 | /* Commands */ |
146 | { | |
147 | { 0x0 }, | |
148 | /* OGF_LINK_CTL */ | |
7c631a67 | 149 | { 0xbe000006, 0x00000001, 0x00000000, 0x00 }, |
1da177e4 | 150 | /* OGF_LINK_POLICY */ |
7c631a67 | 151 | { 0x00005200, 0x00000000, 0x00000000, 0x00 }, |
1da177e4 | 152 | /* OGF_HOST_CTL */ |
7c631a67 | 153 | { 0xaab00200, 0x2b402aaa, 0x05220154, 0x00 }, |
1da177e4 | 154 | /* OGF_INFO_PARAM */ |
7c631a67 | 155 | { 0x000002be, 0x00000000, 0x00000000, 0x00 }, |
1da177e4 | 156 | /* OGF_STATUS_PARAM */ |
7c631a67 | 157 | { 0x000000ea, 0x00000000, 0x00000000, 0x00 } |
1da177e4 LT |
158 | } |
159 | }; | |
160 | ||
161 | static struct bt_sock_list hci_sk_list = { | |
d5fb2962 | 162 | .lock = __RW_LOCK_UNLOCKED(hci_sk_list.lock) |
1da177e4 LT |
163 | }; |
164 | ||
f81fe64f MH |
165 | static bool is_filtered_packet(struct sock *sk, struct sk_buff *skb) |
166 | { | |
167 | struct hci_filter *flt; | |
168 | int flt_type, flt_event; | |
169 | ||
170 | /* Apply filter */ | |
171 | flt = &hci_pi(sk)->filter; | |
172 | ||
d79f34e3 | 173 | flt_type = hci_skb_pkt_type(skb) & HCI_FLT_TYPE_BITS; |
f81fe64f MH |
174 | |
175 | if (!test_bit(flt_type, &flt->type_mask)) | |
176 | return true; | |
177 | ||
178 | /* Extra filter for event packets only */ | |
d79f34e3 | 179 | if (hci_skb_pkt_type(skb) != HCI_EVENT_PKT) |
f81fe64f MH |
180 | return false; |
181 | ||
182 | flt_event = (*(__u8 *)skb->data & HCI_FLT_EVENT_BITS); | |
183 | ||
184 | if (!hci_test_bit(flt_event, &flt->event_mask)) | |
185 | return true; | |
186 | ||
187 | /* Check filter only when opcode is set */ | |
188 | if (!flt->opcode) | |
189 | return false; | |
190 | ||
191 | if (flt_event == HCI_EV_CMD_COMPLETE && | |
192 | flt->opcode != get_unaligned((__le16 *)(skb->data + 3))) | |
193 | return true; | |
194 | ||
195 | if (flt_event == HCI_EV_CMD_STATUS && | |
196 | flt->opcode != get_unaligned((__le16 *)(skb->data + 4))) | |
197 | return true; | |
198 | ||
199 | return false; | |
200 | } | |
201 | ||
1da177e4 | 202 | /* Send frame to RAW socket */ |
470fe1b5 | 203 | void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb) |
1da177e4 LT |
204 | { |
205 | struct sock *sk; | |
e0edf373 | 206 | struct sk_buff *skb_copy = NULL; |
1da177e4 LT |
207 | |
208 | BT_DBG("hdev %p len %d", hdev, skb->len); | |
209 | ||
210 | read_lock(&hci_sk_list.lock); | |
470fe1b5 | 211 | |
b67bfe0d | 212 | sk_for_each(sk, &hci_sk_list.head) { |
1da177e4 LT |
213 | struct sk_buff *nskb; |
214 | ||
215 | if (sk->sk_state != BT_BOUND || hci_pi(sk)->hdev != hdev) | |
216 | continue; | |
217 | ||
218 | /* Don't send frame to the socket it came from */ | |
219 | if (skb->sk == sk) | |
220 | continue; | |
221 | ||
23500189 | 222 | if (hci_pi(sk)->channel == HCI_CHANNEL_RAW) { |
d79f34e3 MH |
223 | if (hci_skb_pkt_type(skb) != HCI_COMMAND_PKT && |
224 | hci_skb_pkt_type(skb) != HCI_EVENT_PKT && | |
225 | hci_skb_pkt_type(skb) != HCI_ACLDATA_PKT && | |
cc974003 MH |
226 | hci_skb_pkt_type(skb) != HCI_SCODATA_PKT && |
227 | hci_skb_pkt_type(skb) != HCI_ISODATA_PKT) | |
bb77543e | 228 | continue; |
23500189 MH |
229 | if (is_filtered_packet(sk, skb)) |
230 | continue; | |
231 | } else if (hci_pi(sk)->channel == HCI_CHANNEL_USER) { | |
232 | if (!bt_cb(skb)->incoming) | |
233 | continue; | |
d79f34e3 MH |
234 | if (hci_skb_pkt_type(skb) != HCI_EVENT_PKT && |
235 | hci_skb_pkt_type(skb) != HCI_ACLDATA_PKT && | |
cc974003 MH |
236 | hci_skb_pkt_type(skb) != HCI_SCODATA_PKT && |
237 | hci_skb_pkt_type(skb) != HCI_ISODATA_PKT) | |
23500189 MH |
238 | continue; |
239 | } else { | |
240 | /* Don't send frame to other channel types */ | |
1da177e4 | 241 | continue; |
23500189 | 242 | } |
1da177e4 | 243 | |
e0edf373 MH |
244 | if (!skb_copy) { |
245 | /* Create a private copy with headroom */ | |
bad93e9d | 246 | skb_copy = __pskb_copy_fclone(skb, 1, GFP_ATOMIC, true); |
e0edf373 MH |
247 | if (!skb_copy) |
248 | continue; | |
249 | ||
250 | /* Put type byte before the data */ | |
d79f34e3 | 251 | memcpy(skb_push(skb_copy, 1), &hci_skb_pkt_type(skb), 1); |
e0edf373 MH |
252 | } |
253 | ||
254 | nskb = skb_clone(skb_copy, GFP_ATOMIC); | |
70f23020 | 255 | if (!nskb) |
1da177e4 LT |
256 | continue; |
257 | ||
470fe1b5 MH |
258 | if (sock_queue_rcv_skb(sk, nskb)) |
259 | kfree_skb(nskb); | |
260 | } | |
261 | ||
262 | read_unlock(&hci_sk_list.lock); | |
e0edf373 MH |
263 | |
264 | kfree_skb(skb_copy); | |
470fe1b5 MH |
265 | } |
266 | ||
7129069e | 267 | /* Send frame to sockets with specific channel */ |
a9ee77af SAS |
268 | static void __hci_send_to_channel(unsigned short channel, struct sk_buff *skb, |
269 | int flag, struct sock *skip_sk) | |
470fe1b5 MH |
270 | { |
271 | struct sock *sk; | |
470fe1b5 | 272 | |
7129069e | 273 | BT_DBG("channel %u len %d", channel, skb->len); |
470fe1b5 | 274 | |
b67bfe0d | 275 | sk_for_each(sk, &hci_sk_list.head) { |
470fe1b5 MH |
276 | struct sk_buff *nskb; |
277 | ||
c08b1a1d | 278 | /* Ignore socket without the flag set */ |
c85be545 | 279 | if (!hci_sock_test_flag(sk, flag)) |
d7f72f61 MH |
280 | continue; |
281 | ||
c08b1a1d MH |
282 | /* Skip the original socket */ |
283 | if (sk == skip_sk) | |
17711c62 MH |
284 | continue; |
285 | ||
286 | if (sk->sk_state != BT_BOUND) | |
287 | continue; | |
288 | ||
289 | if (hci_pi(sk)->channel != channel) | |
290 | continue; | |
291 | ||
292 | nskb = skb_clone(skb, GFP_ATOMIC); | |
293 | if (!nskb) | |
294 | continue; | |
295 | ||
296 | if (sock_queue_rcv_skb(sk, nskb)) | |
297 | kfree_skb(nskb); | |
298 | } | |
299 | ||
a9ee77af SAS |
300 | } |
301 | ||
302 | void hci_send_to_channel(unsigned short channel, struct sk_buff *skb, | |
303 | int flag, struct sock *skip_sk) | |
304 | { | |
305 | read_lock(&hci_sk_list.lock); | |
306 | __hci_send_to_channel(channel, skb, flag, skip_sk); | |
17711c62 MH |
307 | read_unlock(&hci_sk_list.lock); |
308 | } | |
309 | ||
cd82e61c MH |
310 | /* Send frame to monitor socket */ |
311 | void hci_send_to_monitor(struct hci_dev *hdev, struct sk_buff *skb) | |
312 | { | |
cd82e61c | 313 | struct sk_buff *skb_copy = NULL; |
2b531294 | 314 | struct hci_mon_hdr *hdr; |
cd82e61c MH |
315 | __le16 opcode; |
316 | ||
317 | if (!atomic_read(&monitor_promisc)) | |
318 | return; | |
319 | ||
320 | BT_DBG("hdev %p len %d", hdev, skb->len); | |
321 | ||
d79f34e3 | 322 | switch (hci_skb_pkt_type(skb)) { |
cd82e61c | 323 | case HCI_COMMAND_PKT: |
dcf4adbf | 324 | opcode = cpu_to_le16(HCI_MON_COMMAND_PKT); |
cd82e61c MH |
325 | break; |
326 | case HCI_EVENT_PKT: | |
dcf4adbf | 327 | opcode = cpu_to_le16(HCI_MON_EVENT_PKT); |
cd82e61c MH |
328 | break; |
329 | case HCI_ACLDATA_PKT: | |
330 | if (bt_cb(skb)->incoming) | |
dcf4adbf | 331 | opcode = cpu_to_le16(HCI_MON_ACL_RX_PKT); |
cd82e61c | 332 | else |
dcf4adbf | 333 | opcode = cpu_to_le16(HCI_MON_ACL_TX_PKT); |
cd82e61c MH |
334 | break; |
335 | case HCI_SCODATA_PKT: | |
336 | if (bt_cb(skb)->incoming) | |
dcf4adbf | 337 | opcode = cpu_to_le16(HCI_MON_SCO_RX_PKT); |
cd82e61c | 338 | else |
dcf4adbf | 339 | opcode = cpu_to_le16(HCI_MON_SCO_TX_PKT); |
cd82e61c | 340 | break; |
f9a619db LAD |
341 | case HCI_ISODATA_PKT: |
342 | if (bt_cb(skb)->incoming) | |
343 | opcode = cpu_to_le16(HCI_MON_ISO_RX_PKT); | |
344 | else | |
345 | opcode = cpu_to_le16(HCI_MON_ISO_TX_PKT); | |
346 | break; | |
e875ff84 MH |
347 | case HCI_DIAG_PKT: |
348 | opcode = cpu_to_le16(HCI_MON_VENDOR_DIAG); | |
349 | break; | |
cd82e61c MH |
350 | default: |
351 | return; | |
352 | } | |
353 | ||
2b531294 MH |
354 | /* Create a private copy with headroom */ |
355 | skb_copy = __pskb_copy_fclone(skb, HCI_MON_HDR_SIZE, GFP_ATOMIC, true); | |
356 | if (!skb_copy) | |
357 | return; | |
358 | ||
359 | /* Put header before the data */ | |
d58ff351 | 360 | hdr = skb_push(skb_copy, HCI_MON_HDR_SIZE); |
2b531294 MH |
361 | hdr->opcode = opcode; |
362 | hdr->index = cpu_to_le16(hdev->id); | |
363 | hdr->len = cpu_to_le16(skb->len); | |
364 | ||
c08b1a1d MH |
365 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb_copy, |
366 | HCI_SOCK_TRUSTED, NULL); | |
cd82e61c MH |
367 | kfree_skb(skb_copy); |
368 | } | |
369 | ||
38ceaa00 MH |
370 | void hci_send_monitor_ctrl_event(struct hci_dev *hdev, u16 event, |
371 | void *data, u16 data_len, ktime_t tstamp, | |
372 | int flag, struct sock *skip_sk) | |
373 | { | |
374 | struct sock *sk; | |
375 | __le16 index; | |
376 | ||
377 | if (hdev) | |
378 | index = cpu_to_le16(hdev->id); | |
379 | else | |
380 | index = cpu_to_le16(MGMT_INDEX_NONE); | |
381 | ||
382 | read_lock(&hci_sk_list.lock); | |
383 | ||
384 | sk_for_each(sk, &hci_sk_list.head) { | |
385 | struct hci_mon_hdr *hdr; | |
386 | struct sk_buff *skb; | |
387 | ||
388 | if (hci_pi(sk)->channel != HCI_CHANNEL_CONTROL) | |
389 | continue; | |
390 | ||
391 | /* Ignore socket without the flag set */ | |
392 | if (!hci_sock_test_flag(sk, flag)) | |
393 | continue; | |
394 | ||
395 | /* Skip the original socket */ | |
396 | if (sk == skip_sk) | |
397 | continue; | |
398 | ||
399 | skb = bt_skb_alloc(6 + data_len, GFP_ATOMIC); | |
400 | if (!skb) | |
401 | continue; | |
402 | ||
403 | put_unaligned_le32(hci_pi(sk)->cookie, skb_put(skb, 4)); | |
404 | put_unaligned_le16(event, skb_put(skb, 2)); | |
405 | ||
406 | if (data) | |
59ae1d12 | 407 | skb_put_data(skb, data, data_len); |
38ceaa00 MH |
408 | |
409 | skb->tstamp = tstamp; | |
410 | ||
d58ff351 | 411 | hdr = skb_push(skb, HCI_MON_HDR_SIZE); |
38ceaa00 MH |
412 | hdr->opcode = cpu_to_le16(HCI_MON_CTRL_EVENT); |
413 | hdr->index = index; | |
414 | hdr->len = cpu_to_le16(skb->len - HCI_MON_HDR_SIZE); | |
415 | ||
a9ee77af SAS |
416 | __hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, |
417 | HCI_SOCK_TRUSTED, NULL); | |
38ceaa00 MH |
418 | kfree_skb(skb); |
419 | } | |
420 | ||
421 | read_unlock(&hci_sk_list.lock); | |
422 | } | |
423 | ||
cd82e61c MH |
424 | static struct sk_buff *create_monitor_event(struct hci_dev *hdev, int event) |
425 | { | |
426 | struct hci_mon_hdr *hdr; | |
427 | struct hci_mon_new_index *ni; | |
6c566dd5 | 428 | struct hci_mon_index_info *ii; |
cd82e61c MH |
429 | struct sk_buff *skb; |
430 | __le16 opcode; | |
431 | ||
432 | switch (event) { | |
433 | case HCI_DEV_REG: | |
434 | skb = bt_skb_alloc(HCI_MON_NEW_INDEX_SIZE, GFP_ATOMIC); | |
435 | if (!skb) | |
436 | return NULL; | |
437 | ||
4df864c1 | 438 | ni = skb_put(skb, HCI_MON_NEW_INDEX_SIZE); |
cd82e61c MH |
439 | ni->type = hdev->dev_type; |
440 | ni->bus = hdev->bus; | |
441 | bacpy(&ni->bdaddr, &hdev->bdaddr); | |
442 | memcpy(ni->name, hdev->name, 8); | |
443 | ||
dcf4adbf | 444 | opcode = cpu_to_le16(HCI_MON_NEW_INDEX); |
cd82e61c MH |
445 | break; |
446 | ||
447 | case HCI_DEV_UNREG: | |
448 | skb = bt_skb_alloc(0, GFP_ATOMIC); | |
449 | if (!skb) | |
450 | return NULL; | |
451 | ||
dcf4adbf | 452 | opcode = cpu_to_le16(HCI_MON_DEL_INDEX); |
cd82e61c MH |
453 | break; |
454 | ||
e131d74a MH |
455 | case HCI_DEV_SETUP: |
456 | if (hdev->manufacturer == 0xffff) | |
457 | return NULL; | |
19186c7b | 458 | fallthrough; |
e131d74a | 459 | |
6c566dd5 MH |
460 | case HCI_DEV_UP: |
461 | skb = bt_skb_alloc(HCI_MON_INDEX_INFO_SIZE, GFP_ATOMIC); | |
462 | if (!skb) | |
463 | return NULL; | |
464 | ||
4df864c1 | 465 | ii = skb_put(skb, HCI_MON_INDEX_INFO_SIZE); |
6c566dd5 MH |
466 | bacpy(&ii->bdaddr, &hdev->bdaddr); |
467 | ii->manufacturer = cpu_to_le16(hdev->manufacturer); | |
468 | ||
469 | opcode = cpu_to_le16(HCI_MON_INDEX_INFO); | |
470 | break; | |
471 | ||
22db3cbc MH |
472 | case HCI_DEV_OPEN: |
473 | skb = bt_skb_alloc(0, GFP_ATOMIC); | |
474 | if (!skb) | |
475 | return NULL; | |
476 | ||
477 | opcode = cpu_to_le16(HCI_MON_OPEN_INDEX); | |
478 | break; | |
479 | ||
480 | case HCI_DEV_CLOSE: | |
481 | skb = bt_skb_alloc(0, GFP_ATOMIC); | |
482 | if (!skb) | |
483 | return NULL; | |
484 | ||
485 | opcode = cpu_to_le16(HCI_MON_CLOSE_INDEX); | |
486 | break; | |
487 | ||
cd82e61c MH |
488 | default: |
489 | return NULL; | |
490 | } | |
491 | ||
492 | __net_timestamp(skb); | |
493 | ||
d58ff351 | 494 | hdr = skb_push(skb, HCI_MON_HDR_SIZE); |
cd82e61c MH |
495 | hdr->opcode = opcode; |
496 | hdr->index = cpu_to_le16(hdev->id); | |
497 | hdr->len = cpu_to_le16(skb->len - HCI_MON_HDR_SIZE); | |
498 | ||
499 | return skb; | |
500 | } | |
501 | ||
249fa169 MH |
502 | static struct sk_buff *create_monitor_ctrl_open(struct sock *sk) |
503 | { | |
504 | struct hci_mon_hdr *hdr; | |
505 | struct sk_buff *skb; | |
d0bef1d2 | 506 | u16 format; |
249fa169 MH |
507 | u8 ver[3]; |
508 | u32 flags; | |
509 | ||
0ef2c42f MH |
510 | /* No message needed when cookie is not present */ |
511 | if (!hci_pi(sk)->cookie) | |
512 | return NULL; | |
513 | ||
d0bef1d2 | 514 | switch (hci_pi(sk)->channel) { |
f81f5b2d MH |
515 | case HCI_CHANNEL_RAW: |
516 | format = 0x0000; | |
517 | ver[0] = BT_SUBSYS_VERSION; | |
518 | put_unaligned_le16(BT_SUBSYS_REVISION, ver + 1); | |
519 | break; | |
aa1638dd MH |
520 | case HCI_CHANNEL_USER: |
521 | format = 0x0001; | |
522 | ver[0] = BT_SUBSYS_VERSION; | |
523 | put_unaligned_le16(BT_SUBSYS_REVISION, ver + 1); | |
524 | break; | |
d0bef1d2 MH |
525 | case HCI_CHANNEL_CONTROL: |
526 | format = 0x0002; | |
527 | mgmt_fill_version_info(ver); | |
528 | break; | |
529 | default: | |
530 | /* No message for unsupported format */ | |
531 | return NULL; | |
532 | } | |
533 | ||
249fa169 MH |
534 | skb = bt_skb_alloc(14 + TASK_COMM_LEN , GFP_ATOMIC); |
535 | if (!skb) | |
536 | return NULL; | |
537 | ||
249fa169 MH |
538 | flags = hci_sock_test_flag(sk, HCI_SOCK_TRUSTED) ? 0x1 : 0x0; |
539 | ||
540 | put_unaligned_le32(hci_pi(sk)->cookie, skb_put(skb, 4)); | |
541 | put_unaligned_le16(format, skb_put(skb, 2)); | |
59ae1d12 | 542 | skb_put_data(skb, ver, sizeof(ver)); |
249fa169 | 543 | put_unaligned_le32(flags, skb_put(skb, 4)); |
634fef61 | 544 | skb_put_u8(skb, TASK_COMM_LEN); |
59ae1d12 | 545 | skb_put_data(skb, hci_pi(sk)->comm, TASK_COMM_LEN); |
249fa169 MH |
546 | |
547 | __net_timestamp(skb); | |
548 | ||
d58ff351 | 549 | hdr = skb_push(skb, HCI_MON_HDR_SIZE); |
249fa169 | 550 | hdr->opcode = cpu_to_le16(HCI_MON_CTRL_OPEN); |
0ef2c42f MH |
551 | if (hci_pi(sk)->hdev) |
552 | hdr->index = cpu_to_le16(hci_pi(sk)->hdev->id); | |
553 | else | |
554 | hdr->index = cpu_to_le16(HCI_DEV_NONE); | |
249fa169 MH |
555 | hdr->len = cpu_to_le16(skb->len - HCI_MON_HDR_SIZE); |
556 | ||
557 | return skb; | |
558 | } | |
559 | ||
560 | static struct sk_buff *create_monitor_ctrl_close(struct sock *sk) | |
561 | { | |
562 | struct hci_mon_hdr *hdr; | |
563 | struct sk_buff *skb; | |
564 | ||
0ef2c42f MH |
565 | /* No message needed when cookie is not present */ |
566 | if (!hci_pi(sk)->cookie) | |
567 | return NULL; | |
568 | ||
d0bef1d2 | 569 | switch (hci_pi(sk)->channel) { |
f81f5b2d | 570 | case HCI_CHANNEL_RAW: |
aa1638dd | 571 | case HCI_CHANNEL_USER: |
d0bef1d2 MH |
572 | case HCI_CHANNEL_CONTROL: |
573 | break; | |
574 | default: | |
575 | /* No message for unsupported format */ | |
576 | return NULL; | |
577 | } | |
578 | ||
249fa169 MH |
579 | skb = bt_skb_alloc(4, GFP_ATOMIC); |
580 | if (!skb) | |
581 | return NULL; | |
582 | ||
583 | put_unaligned_le32(hci_pi(sk)->cookie, skb_put(skb, 4)); | |
584 | ||
585 | __net_timestamp(skb); | |
586 | ||
d58ff351 | 587 | hdr = skb_push(skb, HCI_MON_HDR_SIZE); |
249fa169 | 588 | hdr->opcode = cpu_to_le16(HCI_MON_CTRL_CLOSE); |
0ef2c42f MH |
589 | if (hci_pi(sk)->hdev) |
590 | hdr->index = cpu_to_le16(hci_pi(sk)->hdev->id); | |
591 | else | |
592 | hdr->index = cpu_to_le16(HCI_DEV_NONE); | |
249fa169 MH |
593 | hdr->len = cpu_to_le16(skb->len - HCI_MON_HDR_SIZE); |
594 | ||
595 | return skb; | |
596 | } | |
597 | ||
38ceaa00 MH |
598 | static struct sk_buff *create_monitor_ctrl_command(struct sock *sk, u16 index, |
599 | u16 opcode, u16 len, | |
600 | const void *buf) | |
601 | { | |
602 | struct hci_mon_hdr *hdr; | |
603 | struct sk_buff *skb; | |
604 | ||
605 | skb = bt_skb_alloc(6 + len, GFP_ATOMIC); | |
606 | if (!skb) | |
607 | return NULL; | |
608 | ||
609 | put_unaligned_le32(hci_pi(sk)->cookie, skb_put(skb, 4)); | |
610 | put_unaligned_le16(opcode, skb_put(skb, 2)); | |
611 | ||
612 | if (buf) | |
59ae1d12 | 613 | skb_put_data(skb, buf, len); |
38ceaa00 MH |
614 | |
615 | __net_timestamp(skb); | |
616 | ||
d58ff351 | 617 | hdr = skb_push(skb, HCI_MON_HDR_SIZE); |
38ceaa00 MH |
618 | hdr->opcode = cpu_to_le16(HCI_MON_CTRL_COMMAND); |
619 | hdr->index = cpu_to_le16(index); | |
620 | hdr->len = cpu_to_le16(skb->len - HCI_MON_HDR_SIZE); | |
621 | ||
622 | return skb; | |
623 | } | |
624 | ||
787b306c JB |
625 | static void __printf(2, 3) |
626 | send_monitor_note(struct sock *sk, const char *fmt, ...) | |
dd31506d | 627 | { |
787b306c | 628 | size_t len; |
dd31506d MH |
629 | struct hci_mon_hdr *hdr; |
630 | struct sk_buff *skb; | |
787b306c JB |
631 | va_list args; |
632 | ||
633 | va_start(args, fmt); | |
634 | len = vsnprintf(NULL, 0, fmt, args); | |
635 | va_end(args); | |
dd31506d MH |
636 | |
637 | skb = bt_skb_alloc(len + 1, GFP_ATOMIC); | |
638 | if (!skb) | |
639 | return; | |
640 | ||
787b306c JB |
641 | va_start(args, fmt); |
642 | vsprintf(skb_put(skb, len), fmt, args); | |
4df864c1 | 643 | *(u8 *)skb_put(skb, 1) = 0; |
787b306c | 644 | va_end(args); |
dd31506d MH |
645 | |
646 | __net_timestamp(skb); | |
647 | ||
648 | hdr = (void *)skb_push(skb, HCI_MON_HDR_SIZE); | |
649 | hdr->opcode = cpu_to_le16(HCI_MON_SYSTEM_NOTE); | |
650 | hdr->index = cpu_to_le16(HCI_DEV_NONE); | |
651 | hdr->len = cpu_to_le16(skb->len - HCI_MON_HDR_SIZE); | |
652 | ||
653 | if (sock_queue_rcv_skb(sk, skb)) | |
654 | kfree_skb(skb); | |
655 | } | |
656 | ||
cd82e61c MH |
657 | static void send_monitor_replay(struct sock *sk) |
658 | { | |
659 | struct hci_dev *hdev; | |
660 | ||
661 | read_lock(&hci_dev_list_lock); | |
662 | ||
663 | list_for_each_entry(hdev, &hci_dev_list, list) { | |
664 | struct sk_buff *skb; | |
665 | ||
666 | skb = create_monitor_event(hdev, HCI_DEV_REG); | |
667 | if (!skb) | |
668 | continue; | |
669 | ||
670 | if (sock_queue_rcv_skb(sk, skb)) | |
671 | kfree_skb(skb); | |
22db3cbc MH |
672 | |
673 | if (!test_bit(HCI_RUNNING, &hdev->flags)) | |
674 | continue; | |
675 | ||
676 | skb = create_monitor_event(hdev, HCI_DEV_OPEN); | |
677 | if (!skb) | |
678 | continue; | |
679 | ||
680 | if (sock_queue_rcv_skb(sk, skb)) | |
681 | kfree_skb(skb); | |
6c566dd5 | 682 | |
e131d74a MH |
683 | if (test_bit(HCI_UP, &hdev->flags)) |
684 | skb = create_monitor_event(hdev, HCI_DEV_UP); | |
685 | else if (hci_dev_test_flag(hdev, HCI_SETUP)) | |
686 | skb = create_monitor_event(hdev, HCI_DEV_SETUP); | |
687 | else | |
688 | skb = NULL; | |
6c566dd5 | 689 | |
e131d74a MH |
690 | if (skb) { |
691 | if (sock_queue_rcv_skb(sk, skb)) | |
692 | kfree_skb(skb); | |
693 | } | |
cd82e61c MH |
694 | } |
695 | ||
696 | read_unlock(&hci_dev_list_lock); | |
697 | } | |
698 | ||
249fa169 MH |
699 | static void send_monitor_control_replay(struct sock *mon_sk) |
700 | { | |
701 | struct sock *sk; | |
702 | ||
703 | read_lock(&hci_sk_list.lock); | |
704 | ||
705 | sk_for_each(sk, &hci_sk_list.head) { | |
706 | struct sk_buff *skb; | |
707 | ||
249fa169 MH |
708 | skb = create_monitor_ctrl_open(sk); |
709 | if (!skb) | |
710 | continue; | |
711 | ||
712 | if (sock_queue_rcv_skb(mon_sk, skb)) | |
713 | kfree_skb(skb); | |
714 | } | |
715 | ||
716 | read_unlock(&hci_sk_list.lock); | |
717 | } | |
718 | ||
040030ef MH |
719 | /* Generate internal stack event */ |
720 | static void hci_si_event(struct hci_dev *hdev, int type, int dlen, void *data) | |
721 | { | |
722 | struct hci_event_hdr *hdr; | |
723 | struct hci_ev_stack_internal *ev; | |
724 | struct sk_buff *skb; | |
725 | ||
726 | skb = bt_skb_alloc(HCI_EVENT_HDR_SIZE + sizeof(*ev) + dlen, GFP_ATOMIC); | |
727 | if (!skb) | |
728 | return; | |
729 | ||
4df864c1 | 730 | hdr = skb_put(skb, HCI_EVENT_HDR_SIZE); |
040030ef MH |
731 | hdr->evt = HCI_EV_STACK_INTERNAL; |
732 | hdr->plen = sizeof(*ev) + dlen; | |
733 | ||
4df864c1 | 734 | ev = skb_put(skb, sizeof(*ev) + dlen); |
040030ef MH |
735 | ev->type = type; |
736 | memcpy(ev->data, data, dlen); | |
737 | ||
738 | bt_cb(skb)->incoming = 1; | |
739 | __net_timestamp(skb); | |
740 | ||
d79f34e3 | 741 | hci_skb_pkt_type(skb) = HCI_EVENT_PKT; |
040030ef MH |
742 | hci_send_to_sock(hdev, skb); |
743 | kfree_skb(skb); | |
744 | } | |
745 | ||
746 | void hci_sock_dev_event(struct hci_dev *hdev, int event) | |
747 | { | |
040030ef MH |
748 | BT_DBG("hdev %s event %d", hdev->name, event); |
749 | ||
cd82e61c MH |
750 | if (atomic_read(&monitor_promisc)) { |
751 | struct sk_buff *skb; | |
752 | ||
ed1b28a4 | 753 | /* Send event to monitor */ |
cd82e61c MH |
754 | skb = create_monitor_event(hdev, event); |
755 | if (skb) { | |
c08b1a1d MH |
756 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, |
757 | HCI_SOCK_TRUSTED, NULL); | |
cd82e61c MH |
758 | kfree_skb(skb); |
759 | } | |
760 | } | |
761 | ||
ed1b28a4 MH |
762 | if (event <= HCI_DEV_DOWN) { |
763 | struct hci_ev_si_device ev; | |
764 | ||
765 | /* Send event to sockets */ | |
766 | ev.event = event; | |
767 | ev.dev_id = hdev->id; | |
768 | hci_si_event(NULL, HCI_EV_SI_DEVICE, sizeof(ev), &ev); | |
769 | } | |
040030ef MH |
770 | |
771 | if (event == HCI_DEV_UNREG) { | |
772 | struct sock *sk; | |
040030ef | 773 | |
e0448092 | 774 | /* Wake up sockets using this dead device */ |
040030ef | 775 | read_lock(&hci_sk_list.lock); |
b67bfe0d | 776 | sk_for_each(sk, &hci_sk_list.head) { |
040030ef | 777 | if (hci_pi(sk)->hdev == hdev) { |
040030ef | 778 | sk->sk_err = EPIPE; |
040030ef | 779 | sk->sk_state_change(sk); |
040030ef | 780 | } |
040030ef MH |
781 | } |
782 | read_unlock(&hci_sk_list.lock); | |
783 | } | |
784 | } | |
785 | ||
801c1e8d JH |
786 | static struct hci_mgmt_chan *__hci_mgmt_chan_find(unsigned short channel) |
787 | { | |
788 | struct hci_mgmt_chan *c; | |
789 | ||
790 | list_for_each_entry(c, &mgmt_chan_list, list) { | |
791 | if (c->channel == channel) | |
792 | return c; | |
793 | } | |
794 | ||
795 | return NULL; | |
796 | } | |
797 | ||
798 | static struct hci_mgmt_chan *hci_mgmt_chan_find(unsigned short channel) | |
799 | { | |
800 | struct hci_mgmt_chan *c; | |
801 | ||
802 | mutex_lock(&mgmt_chan_list_lock); | |
803 | c = __hci_mgmt_chan_find(channel); | |
804 | mutex_unlock(&mgmt_chan_list_lock); | |
805 | ||
806 | return c; | |
807 | } | |
808 | ||
809 | int hci_mgmt_chan_register(struct hci_mgmt_chan *c) | |
810 | { | |
811 | if (c->channel < HCI_CHANNEL_CONTROL) | |
812 | return -EINVAL; | |
813 | ||
814 | mutex_lock(&mgmt_chan_list_lock); | |
815 | if (__hci_mgmt_chan_find(c->channel)) { | |
816 | mutex_unlock(&mgmt_chan_list_lock); | |
817 | return -EALREADY; | |
818 | } | |
819 | ||
820 | list_add_tail(&c->list, &mgmt_chan_list); | |
821 | ||
822 | mutex_unlock(&mgmt_chan_list_lock); | |
823 | ||
824 | return 0; | |
825 | } | |
826 | EXPORT_SYMBOL(hci_mgmt_chan_register); | |
827 | ||
828 | void hci_mgmt_chan_unregister(struct hci_mgmt_chan *c) | |
829 | { | |
830 | mutex_lock(&mgmt_chan_list_lock); | |
831 | list_del(&c->list); | |
832 | mutex_unlock(&mgmt_chan_list_lock); | |
833 | } | |
834 | EXPORT_SYMBOL(hci_mgmt_chan_unregister); | |
835 | ||
1da177e4 LT |
836 | static int hci_sock_release(struct socket *sock) |
837 | { | |
838 | struct sock *sk = sock->sk; | |
7b005bd3 | 839 | struct hci_dev *hdev; |
249fa169 | 840 | struct sk_buff *skb; |
1da177e4 LT |
841 | |
842 | BT_DBG("sock %p sk %p", sock, sk); | |
843 | ||
844 | if (!sk) | |
845 | return 0; | |
846 | ||
11eb85ec DC |
847 | lock_sock(sk); |
848 | ||
70ecce91 MH |
849 | switch (hci_pi(sk)->channel) { |
850 | case HCI_CHANNEL_MONITOR: | |
cd82e61c | 851 | atomic_dec(&monitor_promisc); |
70ecce91 | 852 | break; |
f81f5b2d | 853 | case HCI_CHANNEL_RAW: |
aa1638dd | 854 | case HCI_CHANNEL_USER: |
70ecce91 | 855 | case HCI_CHANNEL_CONTROL: |
249fa169 MH |
856 | /* Send event to monitor */ |
857 | skb = create_monitor_ctrl_close(sk); | |
858 | if (skb) { | |
859 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, | |
860 | HCI_SOCK_TRUSTED, NULL); | |
861 | kfree_skb(skb); | |
862 | } | |
863 | ||
df1cb87a | 864 | hci_sock_free_cookie(sk); |
70ecce91 MH |
865 | break; |
866 | } | |
cd82e61c | 867 | |
1da177e4 LT |
868 | bt_sock_unlink(&hci_sk_list, sk); |
869 | ||
e20a2e9c | 870 | hdev = hci_pi(sk)->hdev; |
1da177e4 | 871 | if (hdev) { |
0acef50b APS |
872 | if (hci_pi(sk)->channel == HCI_CHANNEL_USER && |
873 | !hci_dev_test_flag(hdev, HCI_UNREGISTER)) { | |
9332ef9d | 874 | /* When releasing a user channel exclusive access, |
6b3cc1db SF |
875 | * call hci_dev_do_close directly instead of calling |
876 | * hci_dev_close to ensure the exclusive access will | |
877 | * be released and the controller brought back down. | |
878 | * | |
879 | * The checking of HCI_AUTO_OFF is not needed in this | |
880 | * case since it will have been cleared already when | |
881 | * opening the user channel. | |
0acef50b APS |
882 | * |
883 | * Make sure to also check that we haven't already | |
884 | * unregistered since all the cleanup will have already | |
885 | * been complete and hdev will get released when we put | |
886 | * below. | |
6b3cc1db SF |
887 | */ |
888 | hci_dev_do_close(hdev); | |
9380f9ea LP |
889 | hci_dev_clear_flag(hdev, HCI_USER_CHANNEL); |
890 | mgmt_index_added(hdev); | |
23500189 MH |
891 | } |
892 | ||
1da177e4 LT |
893 | atomic_dec(&hdev->promisc); |
894 | hci_dev_put(hdev); | |
895 | } | |
896 | ||
897 | sock_orphan(sk); | |
11eb85ec | 898 | release_sock(sk); |
1da177e4 LT |
899 | sock_put(sk); |
900 | return 0; | |
901 | } | |
902 | ||
3d4f9c00 | 903 | static int hci_sock_reject_list_add(struct hci_dev *hdev, void __user *arg) |
f0358568 JH |
904 | { |
905 | bdaddr_t bdaddr; | |
5e762444 | 906 | int err; |
f0358568 JH |
907 | |
908 | if (copy_from_user(&bdaddr, arg, sizeof(bdaddr))) | |
909 | return -EFAULT; | |
910 | ||
09fd0de5 | 911 | hci_dev_lock(hdev); |
5e762444 | 912 | |
3d4f9c00 | 913 | err = hci_bdaddr_list_add(&hdev->reject_list, &bdaddr, BDADDR_BREDR); |
5e762444 | 914 | |
09fd0de5 | 915 | hci_dev_unlock(hdev); |
5e762444 AJ |
916 | |
917 | return err; | |
f0358568 JH |
918 | } |
919 | ||
3d4f9c00 | 920 | static int hci_sock_reject_list_del(struct hci_dev *hdev, void __user *arg) |
f0358568 JH |
921 | { |
922 | bdaddr_t bdaddr; | |
5e762444 | 923 | int err; |
f0358568 JH |
924 | |
925 | if (copy_from_user(&bdaddr, arg, sizeof(bdaddr))) | |
926 | return -EFAULT; | |
927 | ||
09fd0de5 | 928 | hci_dev_lock(hdev); |
5e762444 | 929 | |
3d4f9c00 | 930 | err = hci_bdaddr_list_del(&hdev->reject_list, &bdaddr, BDADDR_BREDR); |
5e762444 | 931 | |
09fd0de5 | 932 | hci_dev_unlock(hdev); |
5e762444 AJ |
933 | |
934 | return err; | |
f0358568 JH |
935 | } |
936 | ||
8e87d142 | 937 | /* Ioctls that require bound socket */ |
6039aa73 GP |
938 | static int hci_sock_bound_ioctl(struct sock *sk, unsigned int cmd, |
939 | unsigned long arg) | |
1da177e4 | 940 | { |
e0448092 | 941 | struct hci_dev *hdev = hci_hdev_from_sock(sk); |
1da177e4 | 942 | |
e0448092 TH |
943 | if (IS_ERR(hdev)) |
944 | return PTR_ERR(hdev); | |
1da177e4 | 945 | |
d7a5a11d | 946 | if (hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) |
0736cfa8 MH |
947 | return -EBUSY; |
948 | ||
d7a5a11d | 949 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED)) |
fee746b0 MH |
950 | return -EOPNOTSUPP; |
951 | ||
ca8bee5d | 952 | if (hdev->dev_type != HCI_PRIMARY) |
5b69bef5 MH |
953 | return -EOPNOTSUPP; |
954 | ||
1da177e4 LT |
955 | switch (cmd) { |
956 | case HCISETRAW: | |
957 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 958 | return -EPERM; |
db596681 | 959 | return -EOPNOTSUPP; |
1da177e4 | 960 | |
1da177e4 | 961 | case HCIGETCONNINFO: |
8528d3f7 | 962 | return hci_get_conn_info(hdev, (void __user *)arg); |
40be492f MH |
963 | |
964 | case HCIGETAUTHINFO: | |
8528d3f7 | 965 | return hci_get_auth_info(hdev, (void __user *)arg); |
1da177e4 | 966 | |
f0358568 JH |
967 | case HCIBLOCKADDR: |
968 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 969 | return -EPERM; |
3d4f9c00 | 970 | return hci_sock_reject_list_add(hdev, (void __user *)arg); |
f0358568 JH |
971 | |
972 | case HCIUNBLOCKADDR: | |
973 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 974 | return -EPERM; |
3d4f9c00 | 975 | return hci_sock_reject_list_del(hdev, (void __user *)arg); |
1da177e4 | 976 | } |
0736cfa8 | 977 | |
324d36ed | 978 | return -ENOIOCTLCMD; |
1da177e4 LT |
979 | } |
980 | ||
8fc9ced3 GP |
981 | static int hci_sock_ioctl(struct socket *sock, unsigned int cmd, |
982 | unsigned long arg) | |
1da177e4 | 983 | { |
8528d3f7 | 984 | void __user *argp = (void __user *)arg; |
0736cfa8 | 985 | struct sock *sk = sock->sk; |
1da177e4 LT |
986 | int err; |
987 | ||
988 | BT_DBG("cmd %x arg %lx", cmd, arg); | |
989 | ||
c1c4f956 MH |
990 | lock_sock(sk); |
991 | ||
992 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) { | |
993 | err = -EBADFD; | |
994 | goto done; | |
995 | } | |
996 | ||
f81f5b2d MH |
997 | /* When calling an ioctl on an unbound raw socket, then ensure |
998 | * that the monitor gets informed. Ensure that the resulting event | |
999 | * is only send once by checking if the cookie exists or not. The | |
1000 | * socket cookie will be only ever generated once for the lifetime | |
1001 | * of a given socket. | |
1002 | */ | |
1003 | if (hci_sock_gen_cookie(sk)) { | |
1004 | struct sk_buff *skb; | |
1005 | ||
1006 | if (capable(CAP_NET_ADMIN)) | |
1007 | hci_sock_set_flag(sk, HCI_SOCK_TRUSTED); | |
1008 | ||
1009 | /* Send event to monitor */ | |
1010 | skb = create_monitor_ctrl_open(sk); | |
1011 | if (skb) { | |
1012 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, | |
1013 | HCI_SOCK_TRUSTED, NULL); | |
1014 | kfree_skb(skb); | |
1015 | } | |
1016 | } | |
1017 | ||
c1c4f956 MH |
1018 | release_sock(sk); |
1019 | ||
1da177e4 LT |
1020 | switch (cmd) { |
1021 | case HCIGETDEVLIST: | |
1022 | return hci_get_dev_list(argp); | |
1023 | ||
1024 | case HCIGETDEVINFO: | |
1025 | return hci_get_dev_info(argp); | |
1026 | ||
1027 | case HCIGETCONNLIST: | |
1028 | return hci_get_conn_list(argp); | |
1029 | ||
1030 | case HCIDEVUP: | |
1031 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 1032 | return -EPERM; |
1da177e4 LT |
1033 | return hci_dev_open(arg); |
1034 | ||
1035 | case HCIDEVDOWN: | |
1036 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 1037 | return -EPERM; |
1da177e4 LT |
1038 | return hci_dev_close(arg); |
1039 | ||
1040 | case HCIDEVRESET: | |
1041 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 1042 | return -EPERM; |
1da177e4 LT |
1043 | return hci_dev_reset(arg); |
1044 | ||
1045 | case HCIDEVRESTAT: | |
1046 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 1047 | return -EPERM; |
1da177e4 LT |
1048 | return hci_dev_reset_stat(arg); |
1049 | ||
1050 | case HCISETSCAN: | |
1051 | case HCISETAUTH: | |
1052 | case HCISETENCRYPT: | |
1053 | case HCISETPTYPE: | |
1054 | case HCISETLINKPOL: | |
1055 | case HCISETLINKMODE: | |
1056 | case HCISETACLMTU: | |
1057 | case HCISETSCOMTU: | |
1058 | if (!capable(CAP_NET_ADMIN)) | |
bf5b30b8 | 1059 | return -EPERM; |
1da177e4 LT |
1060 | return hci_dev_cmd(cmd, argp); |
1061 | ||
1062 | case HCIINQUIRY: | |
1063 | return hci_inquiry(argp); | |
1da177e4 | 1064 | } |
c1c4f956 MH |
1065 | |
1066 | lock_sock(sk); | |
1067 | ||
1068 | err = hci_sock_bound_ioctl(sk, cmd, arg); | |
1069 | ||
1070 | done: | |
1071 | release_sock(sk); | |
1072 | return err; | |
1da177e4 LT |
1073 | } |
1074 | ||
7a6038b3 AB |
1075 | #ifdef CONFIG_COMPAT |
1076 | static int hci_sock_compat_ioctl(struct socket *sock, unsigned int cmd, | |
1077 | unsigned long arg) | |
1078 | { | |
1079 | switch (cmd) { | |
1080 | case HCIDEVUP: | |
1081 | case HCIDEVDOWN: | |
1082 | case HCIDEVRESET: | |
1083 | case HCIDEVRESTAT: | |
1084 | return hci_sock_ioctl(sock, cmd, arg); | |
1085 | } | |
1086 | ||
1087 | return hci_sock_ioctl(sock, cmd, (unsigned long)compat_ptr(arg)); | |
1088 | } | |
1089 | #endif | |
1090 | ||
8fc9ced3 GP |
1091 | static int hci_sock_bind(struct socket *sock, struct sockaddr *addr, |
1092 | int addr_len) | |
1da177e4 | 1093 | { |
0381101f | 1094 | struct sockaddr_hci haddr; |
1da177e4 LT |
1095 | struct sock *sk = sock->sk; |
1096 | struct hci_dev *hdev = NULL; | |
f4cdbb3f | 1097 | struct sk_buff *skb; |
0381101f | 1098 | int len, err = 0; |
1da177e4 LT |
1099 | |
1100 | BT_DBG("sock %p sk %p", sock, sk); | |
1101 | ||
0381101f JH |
1102 | if (!addr) |
1103 | return -EINVAL; | |
1104 | ||
1105 | memset(&haddr, 0, sizeof(haddr)); | |
1106 | len = min_t(unsigned int, sizeof(haddr), addr_len); | |
1107 | memcpy(&haddr, addr, len); | |
1108 | ||
1109 | if (haddr.hci_family != AF_BLUETOOTH) | |
1110 | return -EINVAL; | |
1111 | ||
1da177e4 LT |
1112 | lock_sock(sk); |
1113 | ||
e0448092 TH |
1114 | /* Allow detaching from dead device and attaching to alive device, if |
1115 | * the caller wants to re-bind (instead of close) this socket in | |
1116 | * response to hci_sock_dev_event(HCI_DEV_UNREG) notification. | |
1117 | */ | |
1118 | hdev = hci_pi(sk)->hdev; | |
1119 | if (hdev && hci_dev_test_flag(hdev, HCI_UNREGISTER)) { | |
1120 | hci_pi(sk)->hdev = NULL; | |
1121 | sk->sk_state = BT_OPEN; | |
1122 | hci_dev_put(hdev); | |
1123 | } | |
1124 | hdev = NULL; | |
1125 | ||
7cc2ade2 | 1126 | if (sk->sk_state == BT_BOUND) { |
1da177e4 LT |
1127 | err = -EALREADY; |
1128 | goto done; | |
1129 | } | |
1130 | ||
7cc2ade2 MH |
1131 | switch (haddr.hci_channel) { |
1132 | case HCI_CHANNEL_RAW: | |
1133 | if (hci_pi(sk)->hdev) { | |
1134 | err = -EALREADY; | |
1da177e4 LT |
1135 | goto done; |
1136 | } | |
1137 | ||
7cc2ade2 MH |
1138 | if (haddr.hci_dev != HCI_DEV_NONE) { |
1139 | hdev = hci_dev_get(haddr.hci_dev); | |
1140 | if (!hdev) { | |
1141 | err = -ENODEV; | |
1142 | goto done; | |
1143 | } | |
1144 | ||
1145 | atomic_inc(&hdev->promisc); | |
1146 | } | |
1147 | ||
5a6d2cf5 | 1148 | hci_pi(sk)->channel = haddr.hci_channel; |
f81f5b2d | 1149 | |
f4cdbb3f MH |
1150 | if (!hci_sock_gen_cookie(sk)) { |
1151 | /* In the case when a cookie has already been assigned, | |
1152 | * then there has been already an ioctl issued against | |
91641b79 | 1153 | * an unbound socket and with that triggered an open |
f4cdbb3f MH |
1154 | * notification. Send a close notification first to |
1155 | * allow the state transition to bounded. | |
1156 | */ | |
1157 | skb = create_monitor_ctrl_close(sk); | |
f81f5b2d MH |
1158 | if (skb) { |
1159 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, | |
1160 | HCI_SOCK_TRUSTED, NULL); | |
1161 | kfree_skb(skb); | |
1162 | } | |
1163 | } | |
f4cdbb3f MH |
1164 | |
1165 | if (capable(CAP_NET_ADMIN)) | |
1166 | hci_sock_set_flag(sk, HCI_SOCK_TRUSTED); | |
1167 | ||
1168 | hci_pi(sk)->hdev = hdev; | |
1169 | ||
1170 | /* Send event to monitor */ | |
1171 | skb = create_monitor_ctrl_open(sk); | |
1172 | if (skb) { | |
1173 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, | |
1174 | HCI_SOCK_TRUSTED, NULL); | |
1175 | kfree_skb(skb); | |
1176 | } | |
7cc2ade2 MH |
1177 | break; |
1178 | ||
23500189 MH |
1179 | case HCI_CHANNEL_USER: |
1180 | if (hci_pi(sk)->hdev) { | |
1181 | err = -EALREADY; | |
1182 | goto done; | |
1183 | } | |
1184 | ||
1185 | if (haddr.hci_dev == HCI_DEV_NONE) { | |
1186 | err = -EINVAL; | |
1187 | goto done; | |
1188 | } | |
1189 | ||
10a8b86f | 1190 | if (!capable(CAP_NET_ADMIN)) { |
23500189 MH |
1191 | err = -EPERM; |
1192 | goto done; | |
1193 | } | |
1194 | ||
1195 | hdev = hci_dev_get(haddr.hci_dev); | |
1196 | if (!hdev) { | |
1197 | err = -ENODEV; | |
1198 | goto done; | |
1199 | } | |
1200 | ||
781f899f | 1201 | if (test_bit(HCI_INIT, &hdev->flags) || |
d7a5a11d | 1202 | hci_dev_test_flag(hdev, HCI_SETUP) || |
781f899f MH |
1203 | hci_dev_test_flag(hdev, HCI_CONFIG) || |
1204 | (!hci_dev_test_flag(hdev, HCI_AUTO_OFF) && | |
1205 | test_bit(HCI_UP, &hdev->flags))) { | |
23500189 MH |
1206 | err = -EBUSY; |
1207 | hci_dev_put(hdev); | |
1208 | goto done; | |
1209 | } | |
1210 | ||
238be788 | 1211 | if (hci_dev_test_and_set_flag(hdev, HCI_USER_CHANNEL)) { |
23500189 MH |
1212 | err = -EUSERS; |
1213 | hci_dev_put(hdev); | |
1214 | goto done; | |
1215 | } | |
1216 | ||
0602a8ad | 1217 | mgmt_index_removed(hdev); |
23500189 MH |
1218 | |
1219 | err = hci_dev_open(hdev->id); | |
1220 | if (err) { | |
781f899f MH |
1221 | if (err == -EALREADY) { |
1222 | /* In case the transport is already up and | |
1223 | * running, clear the error here. | |
1224 | * | |
9332ef9d | 1225 | * This can happen when opening a user |
781f899f MH |
1226 | * channel and HCI_AUTO_OFF grace period |
1227 | * is still active. | |
1228 | */ | |
1229 | err = 0; | |
1230 | } else { | |
1231 | hci_dev_clear_flag(hdev, HCI_USER_CHANNEL); | |
1232 | mgmt_index_added(hdev); | |
1233 | hci_dev_put(hdev); | |
1234 | goto done; | |
1235 | } | |
23500189 MH |
1236 | } |
1237 | ||
5a6d2cf5 | 1238 | hci_pi(sk)->channel = haddr.hci_channel; |
aa1638dd MH |
1239 | |
1240 | if (!hci_sock_gen_cookie(sk)) { | |
1241 | /* In the case when a cookie has already been assigned, | |
1242 | * this socket will transition from a raw socket into | |
9332ef9d | 1243 | * a user channel socket. For a clean transition, send |
aa1638dd MH |
1244 | * the close notification first. |
1245 | */ | |
1246 | skb = create_monitor_ctrl_close(sk); | |
1247 | if (skb) { | |
1248 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, | |
1249 | HCI_SOCK_TRUSTED, NULL); | |
1250 | kfree_skb(skb); | |
1251 | } | |
1252 | } | |
1253 | ||
1254 | /* The user channel is restricted to CAP_NET_ADMIN | |
1255 | * capabilities and with that implicitly trusted. | |
1256 | */ | |
1257 | hci_sock_set_flag(sk, HCI_SOCK_TRUSTED); | |
1258 | ||
23500189 | 1259 | hci_pi(sk)->hdev = hdev; |
5a6d2cf5 | 1260 | |
aa1638dd MH |
1261 | /* Send event to monitor */ |
1262 | skb = create_monitor_ctrl_open(sk); | |
1263 | if (skb) { | |
1264 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, | |
1265 | HCI_SOCK_TRUSTED, NULL); | |
1266 | kfree_skb(skb); | |
1267 | } | |
1268 | ||
5a6d2cf5 | 1269 | atomic_inc(&hdev->promisc); |
23500189 MH |
1270 | break; |
1271 | ||
cd82e61c MH |
1272 | case HCI_CHANNEL_MONITOR: |
1273 | if (haddr.hci_dev != HCI_DEV_NONE) { | |
1274 | err = -EINVAL; | |
1275 | goto done; | |
1276 | } | |
1277 | ||
1278 | if (!capable(CAP_NET_RAW)) { | |
1279 | err = -EPERM; | |
1280 | goto done; | |
1281 | } | |
1282 | ||
5a6d2cf5 MH |
1283 | hci_pi(sk)->channel = haddr.hci_channel; |
1284 | ||
50ebc055 MH |
1285 | /* The monitor interface is restricted to CAP_NET_RAW |
1286 | * capabilities and with that implicitly trusted. | |
1287 | */ | |
1288 | hci_sock_set_flag(sk, HCI_SOCK_TRUSTED); | |
1289 | ||
787b306c JB |
1290 | send_monitor_note(sk, "Linux version %s (%s)", |
1291 | init_utsname()->release, | |
1292 | init_utsname()->machine); | |
9e8305b3 MH |
1293 | send_monitor_note(sk, "Bluetooth subsystem version %u.%u", |
1294 | BT_SUBSYS_VERSION, BT_SUBSYS_REVISION); | |
cd82e61c | 1295 | send_monitor_replay(sk); |
249fa169 | 1296 | send_monitor_control_replay(sk); |
cd82e61c MH |
1297 | |
1298 | atomic_inc(&monitor_promisc); | |
1299 | break; | |
1300 | ||
ac714949 MH |
1301 | case HCI_CHANNEL_LOGGING: |
1302 | if (haddr.hci_dev != HCI_DEV_NONE) { | |
1303 | err = -EINVAL; | |
1304 | goto done; | |
1305 | } | |
1306 | ||
1307 | if (!capable(CAP_NET_ADMIN)) { | |
1308 | err = -EPERM; | |
1309 | goto done; | |
1310 | } | |
5a6d2cf5 MH |
1311 | |
1312 | hci_pi(sk)->channel = haddr.hci_channel; | |
ac714949 MH |
1313 | break; |
1314 | ||
7cc2ade2 | 1315 | default: |
801c1e8d JH |
1316 | if (!hci_mgmt_chan_find(haddr.hci_channel)) { |
1317 | err = -EINVAL; | |
1318 | goto done; | |
1319 | } | |
1320 | ||
1321 | if (haddr.hci_dev != HCI_DEV_NONE) { | |
1322 | err = -EINVAL; | |
1323 | goto done; | |
1324 | } | |
1325 | ||
1195fbb8 MH |
1326 | /* Users with CAP_NET_ADMIN capabilities are allowed |
1327 | * access to all management commands and events. For | |
1328 | * untrusted users the interface is restricted and | |
1329 | * also only untrusted events are sent. | |
50ebc055 | 1330 | */ |
1195fbb8 MH |
1331 | if (capable(CAP_NET_ADMIN)) |
1332 | hci_sock_set_flag(sk, HCI_SOCK_TRUSTED); | |
50ebc055 | 1333 | |
5a6d2cf5 MH |
1334 | hci_pi(sk)->channel = haddr.hci_channel; |
1335 | ||
f9207338 MH |
1336 | /* At the moment the index and unconfigured index events |
1337 | * are enabled unconditionally. Setting them on each | |
1338 | * socket when binding keeps this functionality. They | |
1339 | * however might be cleared later and then sending of these | |
1340 | * events will be disabled, but that is then intentional. | |
f6b7712e MH |
1341 | * |
1342 | * This also enables generic events that are safe to be | |
1343 | * received by untrusted users. Example for such events | |
1344 | * are changes to settings, class of device, name etc. | |
f9207338 | 1345 | */ |
5a6d2cf5 | 1346 | if (hci_pi(sk)->channel == HCI_CHANNEL_CONTROL) { |
f4cdbb3f MH |
1347 | if (!hci_sock_gen_cookie(sk)) { |
1348 | /* In the case when a cookie has already been | |
91641b79 | 1349 | * assigned, this socket will transition from |
f4cdbb3f | 1350 | * a raw socket into a control socket. To |
91641b79 | 1351 | * allow for a clean transition, send the |
f4cdbb3f MH |
1352 | * close notification first. |
1353 | */ | |
1354 | skb = create_monitor_ctrl_close(sk); | |
1355 | if (skb) { | |
1356 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, | |
1357 | HCI_SOCK_TRUSTED, NULL); | |
1358 | kfree_skb(skb); | |
1359 | } | |
1360 | } | |
70ecce91 | 1361 | |
249fa169 MH |
1362 | /* Send event to monitor */ |
1363 | skb = create_monitor_ctrl_open(sk); | |
1364 | if (skb) { | |
1365 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, | |
1366 | HCI_SOCK_TRUSTED, NULL); | |
1367 | kfree_skb(skb); | |
1368 | } | |
1369 | ||
f9207338 MH |
1370 | hci_sock_set_flag(sk, HCI_MGMT_INDEX_EVENTS); |
1371 | hci_sock_set_flag(sk, HCI_MGMT_UNCONF_INDEX_EVENTS); | |
5504c3a3 MH |
1372 | hci_sock_set_flag(sk, HCI_MGMT_OPTION_EVENTS); |
1373 | hci_sock_set_flag(sk, HCI_MGMT_SETTING_EVENTS); | |
1374 | hci_sock_set_flag(sk, HCI_MGMT_DEV_CLASS_EVENTS); | |
1375 | hci_sock_set_flag(sk, HCI_MGMT_LOCAL_NAME_EVENTS); | |
f9207338 | 1376 | } |
801c1e8d | 1377 | break; |
1da177e4 LT |
1378 | } |
1379 | ||
09572fca LAD |
1380 | /* Default MTU to HCI_MAX_FRAME_SIZE if not set */ |
1381 | if (!hci_pi(sk)->mtu) | |
1382 | hci_pi(sk)->mtu = HCI_MAX_FRAME_SIZE; | |
1383 | ||
1da177e4 LT |
1384 | sk->sk_state = BT_BOUND; |
1385 | ||
1386 | done: | |
1387 | release_sock(sk); | |
1388 | return err; | |
1389 | } | |
1390 | ||
8fc9ced3 | 1391 | static int hci_sock_getname(struct socket *sock, struct sockaddr *addr, |
9b2c45d4 | 1392 | int peer) |
1da177e4 | 1393 | { |
8528d3f7 | 1394 | struct sockaddr_hci *haddr = (struct sockaddr_hci *)addr; |
1da177e4 | 1395 | struct sock *sk = sock->sk; |
9d4b68b2 MH |
1396 | struct hci_dev *hdev; |
1397 | int err = 0; | |
1da177e4 LT |
1398 | |
1399 | BT_DBG("sock %p sk %p", sock, sk); | |
1400 | ||
06f43cbc MH |
1401 | if (peer) |
1402 | return -EOPNOTSUPP; | |
1403 | ||
1da177e4 LT |
1404 | lock_sock(sk); |
1405 | ||
e0448092 TH |
1406 | hdev = hci_hdev_from_sock(sk); |
1407 | if (IS_ERR(hdev)) { | |
1408 | err = PTR_ERR(hdev); | |
9d4b68b2 MH |
1409 | goto done; |
1410 | } | |
1411 | ||
1da177e4 | 1412 | haddr->hci_family = AF_BLUETOOTH; |
7b005bd3 | 1413 | haddr->hci_dev = hdev->id; |
9d4b68b2 | 1414 | haddr->hci_channel= hci_pi(sk)->channel; |
9b2c45d4 | 1415 | err = sizeof(*haddr); |
1da177e4 | 1416 | |
9d4b68b2 | 1417 | done: |
1da177e4 | 1418 | release_sock(sk); |
9d4b68b2 | 1419 | return err; |
1da177e4 LT |
1420 | } |
1421 | ||
6039aa73 GP |
1422 | static void hci_sock_cmsg(struct sock *sk, struct msghdr *msg, |
1423 | struct sk_buff *skb) | |
1da177e4 | 1424 | { |
32929e1f | 1425 | __u8 mask = hci_pi(sk)->cmsg_mask; |
1da177e4 | 1426 | |
0d48d939 MH |
1427 | if (mask & HCI_CMSG_DIR) { |
1428 | int incoming = bt_cb(skb)->incoming; | |
8fc9ced3 GP |
1429 | put_cmsg(msg, SOL_HCI, HCI_CMSG_DIR, sizeof(incoming), |
1430 | &incoming); | |
0d48d939 | 1431 | } |
1da177e4 | 1432 | |
a61bbcf2 | 1433 | if (mask & HCI_CMSG_TSTAMP) { |
f6e623a6 | 1434 | #ifdef CONFIG_COMPAT |
13c6ee2a | 1435 | struct old_timeval32 ctv; |
f6e623a6 | 1436 | #endif |
13c6ee2a | 1437 | struct __kernel_old_timeval tv; |
767c5eb5 MH |
1438 | void *data; |
1439 | int len; | |
a61bbcf2 PM |
1440 | |
1441 | skb_get_timestamp(skb, &tv); | |
767c5eb5 | 1442 | |
1da97f83 DM |
1443 | data = &tv; |
1444 | len = sizeof(tv); | |
1445 | #ifdef CONFIG_COMPAT | |
da88cea1 L |
1446 | if (!COMPAT_USE_64BIT_TIME && |
1447 | (msg->msg_flags & MSG_CMSG_COMPAT)) { | |
767c5eb5 MH |
1448 | ctv.tv_sec = tv.tv_sec; |
1449 | ctv.tv_usec = tv.tv_usec; | |
1450 | data = &ctv; | |
1451 | len = sizeof(ctv); | |
767c5eb5 | 1452 | } |
1da97f83 | 1453 | #endif |
767c5eb5 MH |
1454 | |
1455 | put_cmsg(msg, SOL_HCI, HCI_CMSG_TSTAMP, len, data); | |
a61bbcf2 | 1456 | } |
1da177e4 | 1457 | } |
8e87d142 | 1458 | |
8528d3f7 MH |
1459 | static int hci_sock_recvmsg(struct socket *sock, struct msghdr *msg, |
1460 | size_t len, int flags) | |
1da177e4 | 1461 | { |
1da177e4 LT |
1462 | struct sock *sk = sock->sk; |
1463 | struct sk_buff *skb; | |
1464 | int copied, err; | |
83871f8c | 1465 | unsigned int skblen; |
1da177e4 LT |
1466 | |
1467 | BT_DBG("sock %p, sk %p", sock, sk); | |
1468 | ||
d94a6104 | 1469 | if (flags & MSG_OOB) |
1da177e4 LT |
1470 | return -EOPNOTSUPP; |
1471 | ||
ac714949 MH |
1472 | if (hci_pi(sk)->channel == HCI_CHANNEL_LOGGING) |
1473 | return -EOPNOTSUPP; | |
1474 | ||
1da177e4 LT |
1475 | if (sk->sk_state == BT_CLOSED) |
1476 | return 0; | |
1477 | ||
f4b41f06 | 1478 | skb = skb_recv_datagram(sk, flags, &err); |
70f23020 | 1479 | if (!skb) |
1da177e4 LT |
1480 | return err; |
1481 | ||
83871f8c | 1482 | skblen = skb->len; |
1da177e4 LT |
1483 | copied = skb->len; |
1484 | if (len < copied) { | |
1485 | msg->msg_flags |= MSG_TRUNC; | |
1486 | copied = len; | |
1487 | } | |
1488 | ||
badff6d0 | 1489 | skb_reset_transport_header(skb); |
51f3d02b | 1490 | err = skb_copy_datagram_msg(skb, 0, msg, copied); |
1da177e4 | 1491 | |
3a208627 MH |
1492 | switch (hci_pi(sk)->channel) { |
1493 | case HCI_CHANNEL_RAW: | |
1494 | hci_sock_cmsg(sk, msg, skb); | |
1495 | break; | |
23500189 | 1496 | case HCI_CHANNEL_USER: |
cd82e61c MH |
1497 | case HCI_CHANNEL_MONITOR: |
1498 | sock_recv_timestamp(msg, sk, skb); | |
1499 | break; | |
801c1e8d JH |
1500 | default: |
1501 | if (hci_mgmt_chan_find(hci_pi(sk)->channel)) | |
1502 | sock_recv_timestamp(msg, sk, skb); | |
1503 | break; | |
3a208627 | 1504 | } |
1da177e4 LT |
1505 | |
1506 | skb_free_datagram(sk, skb); | |
1507 | ||
4f34228b | 1508 | if (flags & MSG_TRUNC) |
83871f8c DK |
1509 | copied = skblen; |
1510 | ||
1da177e4 LT |
1511 | return err ? : copied; |
1512 | } | |
1513 | ||
64ba2eb3 LAD |
1514 | static int hci_mgmt_cmd(struct hci_mgmt_chan *chan, struct sock *sk, |
1515 | struct sk_buff *skb) | |
fa4335d7 | 1516 | { |
fa4335d7 JH |
1517 | u8 *cp; |
1518 | struct mgmt_hdr *hdr; | |
1519 | u16 opcode, index, len; | |
1520 | struct hci_dev *hdev = NULL; | |
1521 | const struct hci_mgmt_handler *handler; | |
1522 | bool var_len, no_hdev; | |
1523 | int err; | |
1524 | ||
64ba2eb3 | 1525 | BT_DBG("got %d bytes", skb->len); |
fa4335d7 | 1526 | |
64ba2eb3 | 1527 | if (skb->len < sizeof(*hdr)) |
fa4335d7 JH |
1528 | return -EINVAL; |
1529 | ||
64ba2eb3 | 1530 | hdr = (void *)skb->data; |
fa4335d7 JH |
1531 | opcode = __le16_to_cpu(hdr->opcode); |
1532 | index = __le16_to_cpu(hdr->index); | |
1533 | len = __le16_to_cpu(hdr->len); | |
1534 | ||
64ba2eb3 | 1535 | if (len != skb->len - sizeof(*hdr)) { |
fa4335d7 JH |
1536 | err = -EINVAL; |
1537 | goto done; | |
1538 | } | |
1539 | ||
38ceaa00 | 1540 | if (chan->channel == HCI_CHANNEL_CONTROL) { |
64ba2eb3 | 1541 | struct sk_buff *cmd; |
38ceaa00 MH |
1542 | |
1543 | /* Send event to monitor */ | |
64ba2eb3 LAD |
1544 | cmd = create_monitor_ctrl_command(sk, index, opcode, len, |
1545 | skb->data + sizeof(*hdr)); | |
1546 | if (cmd) { | |
1547 | hci_send_to_channel(HCI_CHANNEL_MONITOR, cmd, | |
38ceaa00 | 1548 | HCI_SOCK_TRUSTED, NULL); |
64ba2eb3 | 1549 | kfree_skb(cmd); |
38ceaa00 MH |
1550 | } |
1551 | } | |
1552 | ||
fa4335d7 JH |
1553 | if (opcode >= chan->handler_count || |
1554 | chan->handlers[opcode].func == NULL) { | |
1555 | BT_DBG("Unknown op %u", opcode); | |
1556 | err = mgmt_cmd_status(sk, index, opcode, | |
1557 | MGMT_STATUS_UNKNOWN_COMMAND); | |
1558 | goto done; | |
1559 | } | |
1560 | ||
1561 | handler = &chan->handlers[opcode]; | |
1562 | ||
1563 | if (!hci_sock_test_flag(sk, HCI_SOCK_TRUSTED) && | |
1564 | !(handler->flags & HCI_MGMT_UNTRUSTED)) { | |
1565 | err = mgmt_cmd_status(sk, index, opcode, | |
1566 | MGMT_STATUS_PERMISSION_DENIED); | |
1567 | goto done; | |
1568 | } | |
1569 | ||
1570 | if (index != MGMT_INDEX_NONE) { | |
1571 | hdev = hci_dev_get(index); | |
1572 | if (!hdev) { | |
1573 | err = mgmt_cmd_status(sk, index, opcode, | |
1574 | MGMT_STATUS_INVALID_INDEX); | |
1575 | goto done; | |
1576 | } | |
1577 | ||
1578 | if (hci_dev_test_flag(hdev, HCI_SETUP) || | |
1579 | hci_dev_test_flag(hdev, HCI_CONFIG) || | |
1580 | hci_dev_test_flag(hdev, HCI_USER_CHANNEL)) { | |
1581 | err = mgmt_cmd_status(sk, index, opcode, | |
1582 | MGMT_STATUS_INVALID_INDEX); | |
1583 | goto done; | |
1584 | } | |
1585 | ||
1586 | if (hci_dev_test_flag(hdev, HCI_UNCONFIGURED) && | |
1587 | !(handler->flags & HCI_MGMT_UNCONFIGURED)) { | |
1588 | err = mgmt_cmd_status(sk, index, opcode, | |
1589 | MGMT_STATUS_INVALID_INDEX); | |
1590 | goto done; | |
1591 | } | |
1592 | } | |
1593 | ||
d5cc6626 MH |
1594 | if (!(handler->flags & HCI_MGMT_HDEV_OPTIONAL)) { |
1595 | no_hdev = (handler->flags & HCI_MGMT_NO_HDEV); | |
1596 | if (no_hdev != !hdev) { | |
1597 | err = mgmt_cmd_status(sk, index, opcode, | |
1598 | MGMT_STATUS_INVALID_INDEX); | |
1599 | goto done; | |
1600 | } | |
fa4335d7 JH |
1601 | } |
1602 | ||
1603 | var_len = (handler->flags & HCI_MGMT_VAR_LEN); | |
1604 | if ((var_len && len < handler->data_len) || | |
1605 | (!var_len && len != handler->data_len)) { | |
1606 | err = mgmt_cmd_status(sk, index, opcode, | |
1607 | MGMT_STATUS_INVALID_PARAMS); | |
1608 | goto done; | |
1609 | } | |
1610 | ||
1611 | if (hdev && chan->hdev_init) | |
1612 | chan->hdev_init(sk, hdev); | |
1613 | ||
64ba2eb3 | 1614 | cp = skb->data + sizeof(*hdr); |
fa4335d7 JH |
1615 | |
1616 | err = handler->func(sk, hdev, cp, len); | |
1617 | if (err < 0) | |
1618 | goto done; | |
1619 | ||
64ba2eb3 | 1620 | err = skb->len; |
fa4335d7 JH |
1621 | |
1622 | done: | |
1623 | if (hdev) | |
1624 | hci_dev_put(hdev); | |
1625 | ||
fa4335d7 JH |
1626 | return err; |
1627 | } | |
1628 | ||
64ba2eb3 LAD |
1629 | static int hci_logging_frame(struct sock *sk, struct sk_buff *skb, |
1630 | unsigned int flags) | |
ac714949 MH |
1631 | { |
1632 | struct hci_mon_hdr *hdr; | |
ac714949 MH |
1633 | struct hci_dev *hdev; |
1634 | u16 index; | |
1635 | int err; | |
1636 | ||
1637 | /* The logging frame consists at minimum of the standard header, | |
1638 | * the priority byte, the ident length byte and at least one string | |
1639 | * terminator NUL byte. Anything shorter are invalid packets. | |
1640 | */ | |
64ba2eb3 | 1641 | if (skb->len < sizeof(*hdr) + 3) |
ac714949 MH |
1642 | return -EINVAL; |
1643 | ||
ac714949 MH |
1644 | hdr = (void *)skb->data; |
1645 | ||
64ba2eb3 LAD |
1646 | if (__le16_to_cpu(hdr->len) != skb->len - sizeof(*hdr)) |
1647 | return -EINVAL; | |
ac714949 MH |
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 | */ | |
64ba2eb3 LAD |
1666 | if (priority > 7 || skb->data[skb->len - 1] != 0x00 || |
1667 | ident_len > skb->len - sizeof(*hdr) - 3 || | |
1668 | skb->data[sizeof(*hdr) + ident_len + 1] != 0x00) | |
1669 | return -EINVAL; | |
ac714949 | 1670 | } else { |
64ba2eb3 | 1671 | return -EINVAL; |
ac714949 MH |
1672 | } |
1673 | ||
1674 | index = __le16_to_cpu(hdr->index); | |
1675 | ||
1676 | if (index != MGMT_INDEX_NONE) { | |
1677 | hdev = hci_dev_get(index); | |
64ba2eb3 LAD |
1678 | if (!hdev) |
1679 | return -ENODEV; | |
ac714949 MH |
1680 | } else { |
1681 | hdev = NULL; | |
1682 | } | |
1683 | ||
1684 | hdr->opcode = cpu_to_le16(HCI_MON_USER_LOGGING); | |
1685 | ||
1686 | hci_send_to_channel(HCI_CHANNEL_MONITOR, skb, HCI_SOCK_TRUSTED, NULL); | |
64ba2eb3 | 1687 | err = skb->len; |
ac714949 MH |
1688 | |
1689 | if (hdev) | |
1690 | hci_dev_put(hdev); | |
1691 | ||
ac714949 MH |
1692 | return err; |
1693 | } | |
1694 | ||
1b784140 YX |
1695 | static int hci_sock_sendmsg(struct socket *sock, struct msghdr *msg, |
1696 | size_t len) | |
1da177e4 LT |
1697 | { |
1698 | struct sock *sk = sock->sk; | |
801c1e8d | 1699 | struct hci_mgmt_chan *chan; |
1da177e4 LT |
1700 | struct hci_dev *hdev; |
1701 | struct sk_buff *skb; | |
1702 | int err; | |
0b59e272 | 1703 | const unsigned int flags = msg->msg_flags; |
1da177e4 LT |
1704 | |
1705 | BT_DBG("sock %p sk %p", sock, sk); | |
1706 | ||
0b59e272 | 1707 | if (flags & MSG_OOB) |
1da177e4 LT |
1708 | return -EOPNOTSUPP; |
1709 | ||
0b59e272 | 1710 | if (flags & ~(MSG_DONTWAIT | MSG_NOSIGNAL | MSG_ERRQUEUE | MSG_CMSG_COMPAT)) |
1da177e4 LT |
1711 | return -EINVAL; |
1712 | ||
09572fca | 1713 | if (len < 4 || len > hci_pi(sk)->mtu) |
1da177e4 LT |
1714 | return -EINVAL; |
1715 | ||
64ba2eb3 LAD |
1716 | skb = bt_skb_sendmsg(sk, msg, len, len, 0, 0); |
1717 | if (IS_ERR(skb)) | |
1718 | return PTR_ERR(skb); | |
0b59e272 | 1719 | |
1da177e4 LT |
1720 | lock_sock(sk); |
1721 | ||
0381101f JH |
1722 | switch (hci_pi(sk)->channel) { |
1723 | case HCI_CHANNEL_RAW: | |
23500189 | 1724 | case HCI_CHANNEL_USER: |
0381101f | 1725 | break; |
cd82e61c MH |
1726 | case HCI_CHANNEL_MONITOR: |
1727 | err = -EOPNOTSUPP; | |
64ba2eb3 | 1728 | goto drop; |
ac714949 | 1729 | case HCI_CHANNEL_LOGGING: |
64ba2eb3 LAD |
1730 | err = hci_logging_frame(sk, skb, flags); |
1731 | goto drop; | |
0381101f | 1732 | default: |
801c1e8d JH |
1733 | mutex_lock(&mgmt_chan_list_lock); |
1734 | chan = __hci_mgmt_chan_find(hci_pi(sk)->channel); | |
1735 | if (chan) | |
64ba2eb3 | 1736 | err = hci_mgmt_cmd(chan, sk, skb); |
801c1e8d JH |
1737 | else |
1738 | err = -EINVAL; | |
1739 | ||
1740 | mutex_unlock(&mgmt_chan_list_lock); | |
64ba2eb3 | 1741 | goto drop; |
0381101f JH |
1742 | } |
1743 | ||
e0448092 TH |
1744 | hdev = hci_hdev_from_sock(sk); |
1745 | if (IS_ERR(hdev)) { | |
1746 | err = PTR_ERR(hdev); | |
64ba2eb3 | 1747 | goto drop; |
1da177e4 LT |
1748 | } |
1749 | ||
7e21addc MH |
1750 | if (!test_bit(HCI_UP, &hdev->flags)) { |
1751 | err = -ENETDOWN; | |
64ba2eb3 | 1752 | goto drop; |
7e21addc MH |
1753 | } |
1754 | ||
8528d3f7 | 1755 | hci_skb_pkt_type(skb) = skb->data[0]; |
1da177e4 | 1756 | skb_pull(skb, 1); |
1da177e4 | 1757 | |
1bc5ad16 MH |
1758 | if (hci_pi(sk)->channel == HCI_CHANNEL_USER) { |
1759 | /* No permission check is needed for user channel | |
1760 | * since that gets enforced when binding the socket. | |
1761 | * | |
1762 | * However check that the packet type is valid. | |
1763 | */ | |
d79f34e3 MH |
1764 | if (hci_skb_pkt_type(skb) != HCI_COMMAND_PKT && |
1765 | hci_skb_pkt_type(skb) != HCI_ACLDATA_PKT && | |
cc974003 MH |
1766 | hci_skb_pkt_type(skb) != HCI_SCODATA_PKT && |
1767 | hci_skb_pkt_type(skb) != HCI_ISODATA_PKT) { | |
1bc5ad16 MH |
1768 | err = -EINVAL; |
1769 | goto drop; | |
1770 | } | |
1771 | ||
1772 | skb_queue_tail(&hdev->raw_q, skb); | |
1773 | queue_work(hdev->workqueue, &hdev->tx_work); | |
d79f34e3 | 1774 | } else if (hci_skb_pkt_type(skb) == HCI_COMMAND_PKT) { |
83985319 | 1775 | u16 opcode = get_unaligned_le16(skb->data); |
1da177e4 LT |
1776 | u16 ogf = hci_opcode_ogf(opcode); |
1777 | u16 ocf = hci_opcode_ocf(opcode); | |
1778 | ||
1779 | if (((ogf > HCI_SFLT_MAX_OGF) || | |
3bb3c755 GP |
1780 | !hci_test_bit(ocf & HCI_FLT_OCF_BITS, |
1781 | &hci_sec_filter.ocf_mask[ogf])) && | |
1782 | !capable(CAP_NET_RAW)) { | |
1da177e4 LT |
1783 | err = -EPERM; |
1784 | goto drop; | |
1785 | } | |
1786 | ||
1982162b MH |
1787 | /* Since the opcode has already been extracted here, store |
1788 | * a copy of the value for later use by the drivers. | |
1789 | */ | |
1790 | hci_skb_opcode(skb) = opcode; | |
1791 | ||
fee746b0 | 1792 | if (ogf == 0x3f) { |
1da177e4 | 1793 | skb_queue_tail(&hdev->raw_q, skb); |
3eff45ea | 1794 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 | 1795 | } else { |
49c922bb | 1796 | /* Stand-alone HCI commands must be flagged as |
11714b3d JH |
1797 | * single-command requests. |
1798 | */ | |
44d27137 | 1799 | bt_cb(skb)->hci.req_flags |= HCI_REQ_START; |
11714b3d | 1800 | |
1da177e4 | 1801 | skb_queue_tail(&hdev->cmd_q, skb); |
c347b765 | 1802 | queue_work(hdev->workqueue, &hdev->cmd_work); |
1da177e4 LT |
1803 | } |
1804 | } else { | |
1805 | if (!capable(CAP_NET_RAW)) { | |
1806 | err = -EPERM; | |
1807 | goto drop; | |
1808 | } | |
1809 | ||
d79f34e3 | 1810 | if (hci_skb_pkt_type(skb) != HCI_ACLDATA_PKT && |
cc974003 MH |
1811 | hci_skb_pkt_type(skb) != HCI_SCODATA_PKT && |
1812 | hci_skb_pkt_type(skb) != HCI_ISODATA_PKT) { | |
bb77543e MH |
1813 | err = -EINVAL; |
1814 | goto drop; | |
1815 | } | |
1816 | ||
1da177e4 | 1817 | skb_queue_tail(&hdev->raw_q, skb); |
3eff45ea | 1818 | queue_work(hdev->workqueue, &hdev->tx_work); |
1da177e4 LT |
1819 | } |
1820 | ||
1821 | err = len; | |
1822 | ||
1823 | done: | |
1824 | release_sock(sk); | |
1825 | return err; | |
1826 | ||
1827 | drop: | |
1828 | kfree_skb(skb); | |
1829 | goto done; | |
1830 | } | |
1831 | ||
09572fca LAD |
1832 | static int hci_sock_setsockopt_old(struct socket *sock, int level, int optname, |
1833 | sockptr_t optval, unsigned int len) | |
1da177e4 LT |
1834 | { |
1835 | struct hci_ufilter uf = { .opcode = 0 }; | |
1836 | struct sock *sk = sock->sk; | |
1837 | int err = 0, opt = 0; | |
1838 | ||
1839 | BT_DBG("sk %p, opt %d", sk, optname); | |
1840 | ||
1841 | lock_sock(sk); | |
1842 | ||
2f39cdb7 | 1843 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) { |
c2371e80 | 1844 | err = -EBADFD; |
2f39cdb7 MH |
1845 | goto done; |
1846 | } | |
1847 | ||
1da177e4 LT |
1848 | switch (optname) { |
1849 | case HCI_DATA_DIR: | |
a7b75c5a | 1850 | if (copy_from_sockptr(&opt, optval, sizeof(opt))) { |
1da177e4 LT |
1851 | err = -EFAULT; |
1852 | break; | |
1853 | } | |
1854 | ||
1855 | if (opt) | |
1856 | hci_pi(sk)->cmsg_mask |= HCI_CMSG_DIR; | |
1857 | else | |
1858 | hci_pi(sk)->cmsg_mask &= ~HCI_CMSG_DIR; | |
1859 | break; | |
1860 | ||
1861 | case HCI_TIME_STAMP: | |
a7b75c5a | 1862 | if (copy_from_sockptr(&opt, optval, sizeof(opt))) { |
1da177e4 LT |
1863 | err = -EFAULT; |
1864 | break; | |
1865 | } | |
1866 | ||
1867 | if (opt) | |
1868 | hci_pi(sk)->cmsg_mask |= HCI_CMSG_TSTAMP; | |
1869 | else | |
1870 | hci_pi(sk)->cmsg_mask &= ~HCI_CMSG_TSTAMP; | |
1871 | break; | |
1872 | ||
1873 | case HCI_FILTER: | |
0878b666 MH |
1874 | { |
1875 | struct hci_filter *f = &hci_pi(sk)->filter; | |
1876 | ||
1877 | uf.type_mask = f->type_mask; | |
1878 | uf.opcode = f->opcode; | |
1879 | uf.event_mask[0] = *((u32 *) f->event_mask + 0); | |
1880 | uf.event_mask[1] = *((u32 *) f->event_mask + 1); | |
1881 | } | |
1882 | ||
1da177e4 | 1883 | len = min_t(unsigned int, len, sizeof(uf)); |
a7b75c5a | 1884 | if (copy_from_sockptr(&uf, optval, len)) { |
1da177e4 LT |
1885 | err = -EFAULT; |
1886 | break; | |
1887 | } | |
1888 | ||
1889 | if (!capable(CAP_NET_RAW)) { | |
1890 | uf.type_mask &= hci_sec_filter.type_mask; | |
1891 | uf.event_mask[0] &= *((u32 *) hci_sec_filter.event_mask + 0); | |
1892 | uf.event_mask[1] &= *((u32 *) hci_sec_filter.event_mask + 1); | |
1893 | } | |
1894 | ||
1895 | { | |
1896 | struct hci_filter *f = &hci_pi(sk)->filter; | |
1897 | ||
1898 | f->type_mask = uf.type_mask; | |
1899 | f->opcode = uf.opcode; | |
1900 | *((u32 *) f->event_mask + 0) = uf.event_mask[0]; | |
1901 | *((u32 *) f->event_mask + 1) = uf.event_mask[1]; | |
1902 | } | |
8e87d142 | 1903 | break; |
1da177e4 LT |
1904 | |
1905 | default: | |
1906 | err = -ENOPROTOOPT; | |
1907 | break; | |
1908 | } | |
1909 | ||
2f39cdb7 | 1910 | done: |
1da177e4 LT |
1911 | release_sock(sk); |
1912 | return err; | |
1913 | } | |
1914 | ||
09572fca LAD |
1915 | static int hci_sock_setsockopt(struct socket *sock, int level, int optname, |
1916 | sockptr_t optval, unsigned int len) | |
1da177e4 | 1917 | { |
1da177e4 | 1918 | struct sock *sk = sock->sk; |
b9f9dbad DC |
1919 | int err = 0; |
1920 | u16 opt; | |
cedc5469 MH |
1921 | |
1922 | BT_DBG("sk %p, opt %d", sk, optname); | |
1da177e4 | 1923 | |
09572fca LAD |
1924 | if (level == SOL_HCI) |
1925 | return hci_sock_setsockopt_old(sock, level, optname, optval, | |
1926 | len); | |
1927 | ||
1928 | if (level != SOL_BLUETOOTH) | |
47b0f573 MH |
1929 | return -ENOPROTOOPT; |
1930 | ||
09572fca LAD |
1931 | lock_sock(sk); |
1932 | ||
1933 | switch (optname) { | |
1934 | case BT_SNDMTU: | |
1935 | case BT_RCVMTU: | |
1936 | switch (hci_pi(sk)->channel) { | |
1937 | /* Don't allow changing MTU for channels that are meant for HCI | |
1938 | * traffic only. | |
1939 | */ | |
1940 | case HCI_CHANNEL_RAW: | |
1941 | case HCI_CHANNEL_USER: | |
1942 | err = -ENOPROTOOPT; | |
1943 | goto done; | |
1944 | } | |
1945 | ||
b9f9dbad | 1946 | if (copy_from_sockptr(&opt, optval, sizeof(opt))) { |
09572fca LAD |
1947 | err = -EFAULT; |
1948 | break; | |
1949 | } | |
1950 | ||
1951 | hci_pi(sk)->mtu = opt; | |
1952 | break; | |
1953 | ||
1954 | default: | |
1955 | err = -ENOPROTOOPT; | |
1956 | break; | |
1957 | } | |
1958 | ||
1959 | done: | |
1960 | release_sock(sk); | |
1961 | return err; | |
1962 | } | |
1963 | ||
1964 | static int hci_sock_getsockopt_old(struct socket *sock, int level, int optname, | |
1965 | char __user *optval, int __user *optlen) | |
1966 | { | |
1967 | struct hci_ufilter uf; | |
1968 | struct sock *sk = sock->sk; | |
1969 | int len, opt, err = 0; | |
1970 | ||
1971 | BT_DBG("sk %p, opt %d", sk, optname); | |
1972 | ||
1da177e4 LT |
1973 | if (get_user(len, optlen)) |
1974 | return -EFAULT; | |
1975 | ||
cedc5469 MH |
1976 | lock_sock(sk); |
1977 | ||
1978 | if (hci_pi(sk)->channel != HCI_CHANNEL_RAW) { | |
c2371e80 | 1979 | err = -EBADFD; |
cedc5469 MH |
1980 | goto done; |
1981 | } | |
1982 | ||
1da177e4 LT |
1983 | switch (optname) { |
1984 | case HCI_DATA_DIR: | |
1985 | if (hci_pi(sk)->cmsg_mask & HCI_CMSG_DIR) | |
1986 | opt = 1; | |
8e87d142 | 1987 | else |
1da177e4 LT |
1988 | opt = 0; |
1989 | ||
1990 | if (put_user(opt, optval)) | |
cedc5469 | 1991 | err = -EFAULT; |
1da177e4 LT |
1992 | break; |
1993 | ||
1994 | case HCI_TIME_STAMP: | |
1995 | if (hci_pi(sk)->cmsg_mask & HCI_CMSG_TSTAMP) | |
1996 | opt = 1; | |
8e87d142 | 1997 | else |
1da177e4 LT |
1998 | opt = 0; |
1999 | ||
2000 | if (put_user(opt, optval)) | |
cedc5469 | 2001 | err = -EFAULT; |
1da177e4 LT |
2002 | break; |
2003 | ||
2004 | case HCI_FILTER: | |
2005 | { | |
2006 | struct hci_filter *f = &hci_pi(sk)->filter; | |
2007 | ||
e15ca9a0 | 2008 | memset(&uf, 0, sizeof(uf)); |
1da177e4 LT |
2009 | uf.type_mask = f->type_mask; |
2010 | uf.opcode = f->opcode; | |
2011 | uf.event_mask[0] = *((u32 *) f->event_mask + 0); | |
2012 | uf.event_mask[1] = *((u32 *) f->event_mask + 1); | |
2013 | } | |
2014 | ||
2015 | len = min_t(unsigned int, len, sizeof(uf)); | |
2016 | if (copy_to_user(optval, &uf, len)) | |
cedc5469 | 2017 | err = -EFAULT; |
1da177e4 LT |
2018 | break; |
2019 | ||
2020 | default: | |
cedc5469 | 2021 | err = -ENOPROTOOPT; |
1da177e4 LT |
2022 | break; |
2023 | } | |
2024 | ||
cedc5469 MH |
2025 | done: |
2026 | release_sock(sk); | |
2027 | return err; | |
1da177e4 LT |
2028 | } |
2029 | ||
09572fca LAD |
2030 | static int hci_sock_getsockopt(struct socket *sock, int level, int optname, |
2031 | char __user *optval, int __user *optlen) | |
2032 | { | |
2033 | struct sock *sk = sock->sk; | |
2034 | int err = 0; | |
2035 | ||
2036 | BT_DBG("sk %p, opt %d", sk, optname); | |
2037 | ||
2038 | if (level == SOL_HCI) | |
2039 | return hci_sock_getsockopt_old(sock, level, optname, optval, | |
2040 | optlen); | |
2041 | ||
2042 | if (level != SOL_BLUETOOTH) | |
2043 | return -ENOPROTOOPT; | |
2044 | ||
2045 | lock_sock(sk); | |
2046 | ||
2047 | switch (optname) { | |
2048 | case BT_SNDMTU: | |
2049 | case BT_RCVMTU: | |
2050 | if (put_user(hci_pi(sk)->mtu, (u16 __user *)optval)) | |
2051 | err = -EFAULT; | |
2052 | break; | |
2053 | ||
2054 | default: | |
2055 | err = -ENOPROTOOPT; | |
2056 | break; | |
2057 | } | |
2058 | ||
2059 | release_sock(sk); | |
2060 | return err; | |
2061 | } | |
2062 | ||
709fca50 NDP |
2063 | static void hci_sock_destruct(struct sock *sk) |
2064 | { | |
b338d917 | 2065 | mgmt_cleanup(sk); |
709fca50 NDP |
2066 | skb_queue_purge(&sk->sk_receive_queue); |
2067 | skb_queue_purge(&sk->sk_write_queue); | |
2068 | } | |
2069 | ||
90ddc4f0 | 2070 | static const struct proto_ops hci_sock_ops = { |
1da177e4 LT |
2071 | .family = PF_BLUETOOTH, |
2072 | .owner = THIS_MODULE, | |
2073 | .release = hci_sock_release, | |
2074 | .bind = hci_sock_bind, | |
2075 | .getname = hci_sock_getname, | |
2076 | .sendmsg = hci_sock_sendmsg, | |
2077 | .recvmsg = hci_sock_recvmsg, | |
2078 | .ioctl = hci_sock_ioctl, | |
7a6038b3 AB |
2079 | #ifdef CONFIG_COMPAT |
2080 | .compat_ioctl = hci_sock_compat_ioctl, | |
2081 | #endif | |
a11e1d43 | 2082 | .poll = datagram_poll, |
1da177e4 LT |
2083 | .listen = sock_no_listen, |
2084 | .shutdown = sock_no_shutdown, | |
2085 | .setsockopt = hci_sock_setsockopt, | |
2086 | .getsockopt = hci_sock_getsockopt, | |
2087 | .connect = sock_no_connect, | |
2088 | .socketpair = sock_no_socketpair, | |
2089 | .accept = sock_no_accept, | |
2090 | .mmap = sock_no_mmap | |
2091 | }; | |
2092 | ||
2093 | static struct proto hci_sk_proto = { | |
2094 | .name = "HCI", | |
2095 | .owner = THIS_MODULE, | |
2096 | .obj_size = sizeof(struct hci_pinfo) | |
2097 | }; | |
2098 | ||
3f378b68 EP |
2099 | static int hci_sock_create(struct net *net, struct socket *sock, int protocol, |
2100 | int kern) | |
1da177e4 LT |
2101 | { |
2102 | struct sock *sk; | |
2103 | ||
2104 | BT_DBG("sock %p", sock); | |
2105 | ||
2106 | if (sock->type != SOCK_RAW) | |
2107 | return -ESOCKTNOSUPPORT; | |
2108 | ||
2109 | sock->ops = &hci_sock_ops; | |
2110 | ||
11aa9c28 | 2111 | sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &hci_sk_proto, kern); |
1da177e4 LT |
2112 | if (!sk) |
2113 | return -ENOMEM; | |
2114 | ||
2115 | sock_init_data(sock, sk); | |
2116 | ||
2117 | sock_reset_flag(sk, SOCK_ZAPPED); | |
2118 | ||
2119 | sk->sk_protocol = protocol; | |
2120 | ||
2121 | sock->state = SS_UNCONNECTED; | |
2122 | sk->sk_state = BT_OPEN; | |
709fca50 | 2123 | sk->sk_destruct = hci_sock_destruct; |
1da177e4 LT |
2124 | |
2125 | bt_sock_link(&hci_sk_list, sk); | |
2126 | return 0; | |
2127 | } | |
2128 | ||
ec1b4cf7 | 2129 | static const struct net_proto_family hci_sock_family_ops = { |
1da177e4 LT |
2130 | .family = PF_BLUETOOTH, |
2131 | .owner = THIS_MODULE, | |
2132 | .create = hci_sock_create, | |
2133 | }; | |
2134 | ||
1da177e4 LT |
2135 | int __init hci_sock_init(void) |
2136 | { | |
2137 | int err; | |
2138 | ||
b0a8e282 MH |
2139 | BUILD_BUG_ON(sizeof(struct sockaddr_hci) > sizeof(struct sockaddr)); |
2140 | ||
1da177e4 LT |
2141 | err = proto_register(&hci_sk_proto, 0); |
2142 | if (err < 0) | |
2143 | return err; | |
2144 | ||
2145 | err = bt_sock_register(BTPROTO_HCI, &hci_sock_family_ops); | |
f7c86637 MY |
2146 | if (err < 0) { |
2147 | BT_ERR("HCI socket registration failed"); | |
1da177e4 | 2148 | goto error; |
f7c86637 MY |
2149 | } |
2150 | ||
b0316615 | 2151 | err = bt_procfs_init(&init_net, "hci", &hci_sk_list, NULL); |
f7c86637 MY |
2152 | if (err < 0) { |
2153 | BT_ERR("Failed to create HCI proc file"); | |
2154 | bt_sock_unregister(BTPROTO_HCI); | |
2155 | goto error; | |
2156 | } | |
1da177e4 | 2157 | |
1da177e4 LT |
2158 | BT_INFO("HCI socket layer initialized"); |
2159 | ||
2160 | return 0; | |
2161 | ||
2162 | error: | |
1da177e4 LT |
2163 | proto_unregister(&hci_sk_proto); |
2164 | return err; | |
2165 | } | |
2166 | ||
b7440a14 | 2167 | void hci_sock_cleanup(void) |
1da177e4 | 2168 | { |
f7c86637 | 2169 | bt_procfs_cleanup(&init_net, "hci"); |
5e9d7f86 | 2170 | bt_sock_unregister(BTPROTO_HCI); |
1da177e4 | 2171 | proto_unregister(&hci_sk_proto); |
1da177e4 | 2172 | } |