Commit | Line | Data |
---|---|---|
8e87d142 | 1 | /* |
1da177e4 LT |
2 | BlueZ - Bluetooth protocol stack for Linux |
3 | Copyright (C) 2000-2001 Qualcomm Incorporated | |
4 | ||
5 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License version 2 as | |
9 | published by the Free Software Foundation; | |
10 | ||
11 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
12 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
13 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
14 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
8e87d142 YH |
15 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES |
16 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
17 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
1da177e4 LT |
18 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
19 | ||
8e87d142 YH |
20 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, |
21 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
1da177e4 LT |
22 | SOFTWARE IS DISCLAIMED. |
23 | */ | |
24 | ||
25 | /* Bluetooth HCI sockets. */ | |
26 | ||
1da177e4 LT |
27 | #include <linux/module.h> |
28 | ||
29 | #include <linux/types.h> | |
4fc268d2 | 30 | #include <linux/capability.h> |
1da177e4 LT |
31 | #include <linux/errno.h> |
32 | #include <linux/kernel.h> | |
1da177e4 LT |
33 | #include <linux/slab.h> |
34 | #include <linux/poll.h> | |
35 | #include <linux/fcntl.h> | |
36 | #include <linux/init.h> | |
37 | #include <linux/skbuff.h> | |
38 | #include <linux/workqueue.h> | |
39 | #include <linux/interrupt.h> | |
40 | #include <linux/socket.h> | |
41 | #include <linux/ioctl.h> | |
42 | #include <net/sock.h> | |
43 | ||
44 | #include <asm/system.h> | |
45 | #include <asm/uaccess.h> | |
46 | #include <asm/unaligned.h> | |
47 | ||
48 | #include <net/bluetooth/bluetooth.h> | |
49 | #include <net/bluetooth/hci_core.h> | |
50 | ||
51 | #ifndef CONFIG_BT_HCI_SOCK_DEBUG | |
52 | #undef BT_DBG | |
53 | #define BT_DBG(D...) | |
54 | #endif | |
55 | ||
56 | /* ----- HCI socket interface ----- */ | |
57 | ||
58 | static inline int hci_test_bit(int nr, void *addr) | |
59 | { | |
60 | return *((__u32 *) addr + (nr >> 5)) & ((__u32) 1 << (nr & 31)); | |
61 | } | |
62 | ||
63 | /* Security filter */ | |
64 | static struct hci_sec_filter hci_sec_filter = { | |
65 | /* Packet types */ | |
66 | 0x10, | |
67 | /* Events */ | |
dd7f5527 | 68 | { 0x1000d9fe, 0x0000b00c }, |
1da177e4 LT |
69 | /* Commands */ |
70 | { | |
71 | { 0x0 }, | |
72 | /* OGF_LINK_CTL */ | |
dd7f5527 | 73 | { 0xbe000006, 0x00000001, 0x000000, 0x00 }, |
1da177e4 | 74 | /* OGF_LINK_POLICY */ |
dd7f5527 | 75 | { 0x00005200, 0x00000000, 0x000000, 0x00 }, |
1da177e4 | 76 | /* OGF_HOST_CTL */ |
dd7f5527 | 77 | { 0xaab00200, 0x2b402aaa, 0x020154, 0x00 }, |
1da177e4 | 78 | /* OGF_INFO_PARAM */ |
dd7f5527 | 79 | { 0x000002be, 0x00000000, 0x000000, 0x00 }, |
1da177e4 | 80 | /* OGF_STATUS_PARAM */ |
dd7f5527 | 81 | { 0x000000ea, 0x00000000, 0x000000, 0x00 } |
1da177e4 LT |
82 | } |
83 | }; | |
84 | ||
85 | static struct bt_sock_list hci_sk_list = { | |
86 | .lock = RW_LOCK_UNLOCKED | |
87 | }; | |
88 | ||
89 | /* Send frame to RAW socket */ | |
90 | void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb) | |
91 | { | |
92 | struct sock *sk; | |
93 | struct hlist_node *node; | |
94 | ||
95 | BT_DBG("hdev %p len %d", hdev, skb->len); | |
96 | ||
97 | read_lock(&hci_sk_list.lock); | |
98 | sk_for_each(sk, node, &hci_sk_list.head) { | |
99 | struct hci_filter *flt; | |
100 | struct sk_buff *nskb; | |
101 | ||
102 | if (sk->sk_state != BT_BOUND || hci_pi(sk)->hdev != hdev) | |
103 | continue; | |
104 | ||
105 | /* Don't send frame to the socket it came from */ | |
106 | if (skb->sk == sk) | |
107 | continue; | |
108 | ||
109 | /* Apply filter */ | |
110 | flt = &hci_pi(sk)->filter; | |
111 | ||
0d48d939 MH |
112 | if (!test_bit((bt_cb(skb)->pkt_type == HCI_VENDOR_PKT) ? |
113 | 0 : (bt_cb(skb)->pkt_type & HCI_FLT_TYPE_BITS), &flt->type_mask)) | |
1da177e4 LT |
114 | continue; |
115 | ||
0d48d939 | 116 | if (bt_cb(skb)->pkt_type == HCI_EVENT_PKT) { |
1da177e4 LT |
117 | register int evt = (*(__u8 *)skb->data & HCI_FLT_EVENT_BITS); |
118 | ||
119 | if (!hci_test_bit(evt, &flt->event_mask)) | |
120 | continue; | |
121 | ||
4498c80d DM |
122 | if (flt->opcode && |
123 | ((evt == HCI_EV_CMD_COMPLETE && | |
124 | flt->opcode != | |
905f3ed6 | 125 | get_unaligned((__le16 *)(skb->data + 3))) || |
4498c80d DM |
126 | (evt == HCI_EV_CMD_STATUS && |
127 | flt->opcode != | |
905f3ed6 | 128 | get_unaligned((__le16 *)(skb->data + 4))))) |
1da177e4 LT |
129 | continue; |
130 | } | |
131 | ||
132 | if (!(nskb = skb_clone(skb, GFP_ATOMIC))) | |
133 | continue; | |
134 | ||
135 | /* Put type byte before the data */ | |
0d48d939 | 136 | memcpy(skb_push(nskb, 1), &bt_cb(nskb)->pkt_type, 1); |
1da177e4 LT |
137 | |
138 | if (sock_queue_rcv_skb(sk, nskb)) | |
139 | kfree_skb(nskb); | |
140 | } | |
141 | read_unlock(&hci_sk_list.lock); | |
142 | } | |
143 | ||
144 | static int hci_sock_release(struct socket *sock) | |
145 | { | |
146 | struct sock *sk = sock->sk; | |
7b005bd3 | 147 | struct hci_dev *hdev; |
1da177e4 LT |
148 | |
149 | BT_DBG("sock %p sk %p", sock, sk); | |
150 | ||
151 | if (!sk) | |
152 | return 0; | |
153 | ||
7b005bd3 MH |
154 | hdev = hci_pi(sk)->hdev; |
155 | ||
1da177e4 LT |
156 | bt_sock_unlink(&hci_sk_list, sk); |
157 | ||
158 | if (hdev) { | |
159 | atomic_dec(&hdev->promisc); | |
160 | hci_dev_put(hdev); | |
161 | } | |
162 | ||
163 | sock_orphan(sk); | |
164 | ||
165 | skb_queue_purge(&sk->sk_receive_queue); | |
166 | skb_queue_purge(&sk->sk_write_queue); | |
167 | ||
168 | sock_put(sk); | |
169 | return 0; | |
170 | } | |
171 | ||
8e87d142 | 172 | /* Ioctls that require bound socket */ |
1da177e4 LT |
173 | static inline int hci_sock_bound_ioctl(struct sock *sk, unsigned int cmd, unsigned long arg) |
174 | { | |
175 | struct hci_dev *hdev = hci_pi(sk)->hdev; | |
176 | ||
177 | if (!hdev) | |
178 | return -EBADFD; | |
179 | ||
180 | switch (cmd) { | |
181 | case HCISETRAW: | |
182 | if (!capable(CAP_NET_ADMIN)) | |
183 | return -EACCES; | |
184 | ||
185 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) | |
186 | return -EPERM; | |
187 | ||
188 | if (arg) | |
189 | set_bit(HCI_RAW, &hdev->flags); | |
190 | else | |
191 | clear_bit(HCI_RAW, &hdev->flags); | |
192 | ||
193 | return 0; | |
194 | ||
195 | case HCISETSECMGR: | |
196 | if (!capable(CAP_NET_ADMIN)) | |
197 | return -EACCES; | |
198 | ||
199 | if (arg) | |
200 | set_bit(HCI_SECMGR, &hdev->flags); | |
201 | else | |
202 | clear_bit(HCI_SECMGR, &hdev->flags); | |
203 | ||
204 | return 0; | |
205 | ||
206 | case HCIGETCONNINFO: | |
207 | return hci_get_conn_info(hdev, (void __user *)arg); | |
208 | ||
209 | default: | |
210 | if (hdev->ioctl) | |
211 | return hdev->ioctl(hdev, cmd, arg); | |
212 | return -EINVAL; | |
213 | } | |
214 | } | |
215 | ||
216 | static int hci_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
217 | { | |
218 | struct sock *sk = sock->sk; | |
219 | void __user *argp = (void __user *)arg; | |
220 | int err; | |
221 | ||
222 | BT_DBG("cmd %x arg %lx", cmd, arg); | |
223 | ||
224 | switch (cmd) { | |
225 | case HCIGETDEVLIST: | |
226 | return hci_get_dev_list(argp); | |
227 | ||
228 | case HCIGETDEVINFO: | |
229 | return hci_get_dev_info(argp); | |
230 | ||
231 | case HCIGETCONNLIST: | |
232 | return hci_get_conn_list(argp); | |
233 | ||
234 | case HCIDEVUP: | |
235 | if (!capable(CAP_NET_ADMIN)) | |
236 | return -EACCES; | |
237 | return hci_dev_open(arg); | |
238 | ||
239 | case HCIDEVDOWN: | |
240 | if (!capable(CAP_NET_ADMIN)) | |
241 | return -EACCES; | |
242 | return hci_dev_close(arg); | |
243 | ||
244 | case HCIDEVRESET: | |
245 | if (!capable(CAP_NET_ADMIN)) | |
246 | return -EACCES; | |
247 | return hci_dev_reset(arg); | |
248 | ||
249 | case HCIDEVRESTAT: | |
250 | if (!capable(CAP_NET_ADMIN)) | |
251 | return -EACCES; | |
252 | return hci_dev_reset_stat(arg); | |
253 | ||
254 | case HCISETSCAN: | |
255 | case HCISETAUTH: | |
256 | case HCISETENCRYPT: | |
257 | case HCISETPTYPE: | |
258 | case HCISETLINKPOL: | |
259 | case HCISETLINKMODE: | |
260 | case HCISETACLMTU: | |
261 | case HCISETSCOMTU: | |
262 | if (!capable(CAP_NET_ADMIN)) | |
263 | return -EACCES; | |
264 | return hci_dev_cmd(cmd, argp); | |
265 | ||
266 | case HCIINQUIRY: | |
267 | return hci_inquiry(argp); | |
268 | ||
269 | default: | |
270 | lock_sock(sk); | |
271 | err = hci_sock_bound_ioctl(sk, cmd, arg); | |
272 | release_sock(sk); | |
273 | return err; | |
274 | } | |
275 | } | |
276 | ||
277 | static int hci_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len) | |
278 | { | |
279 | struct sockaddr_hci *haddr = (struct sockaddr_hci *) addr; | |
280 | struct sock *sk = sock->sk; | |
281 | struct hci_dev *hdev = NULL; | |
282 | int err = 0; | |
283 | ||
284 | BT_DBG("sock %p sk %p", sock, sk); | |
285 | ||
286 | if (!haddr || haddr->hci_family != AF_BLUETOOTH) | |
287 | return -EINVAL; | |
288 | ||
289 | lock_sock(sk); | |
290 | ||
291 | if (hci_pi(sk)->hdev) { | |
292 | err = -EALREADY; | |
293 | goto done; | |
294 | } | |
295 | ||
296 | if (haddr->hci_dev != HCI_DEV_NONE) { | |
297 | if (!(hdev = hci_dev_get(haddr->hci_dev))) { | |
298 | err = -ENODEV; | |
299 | goto done; | |
300 | } | |
301 | ||
302 | atomic_inc(&hdev->promisc); | |
303 | } | |
304 | ||
305 | hci_pi(sk)->hdev = hdev; | |
306 | sk->sk_state = BT_BOUND; | |
307 | ||
308 | done: | |
309 | release_sock(sk); | |
310 | return err; | |
311 | } | |
312 | ||
313 | static int hci_sock_getname(struct socket *sock, struct sockaddr *addr, int *addr_len, int peer) | |
314 | { | |
315 | struct sockaddr_hci *haddr = (struct sockaddr_hci *) addr; | |
316 | struct sock *sk = sock->sk; | |
7b005bd3 | 317 | struct hci_dev *hdev = hci_pi(sk)->hdev; |
1da177e4 LT |
318 | |
319 | BT_DBG("sock %p sk %p", sock, sk); | |
320 | ||
7b005bd3 MH |
321 | if (!hdev) |
322 | return -EBADFD; | |
323 | ||
1da177e4 LT |
324 | lock_sock(sk); |
325 | ||
326 | *addr_len = sizeof(*haddr); | |
327 | haddr->hci_family = AF_BLUETOOTH; | |
7b005bd3 | 328 | haddr->hci_dev = hdev->id; |
1da177e4 LT |
329 | |
330 | release_sock(sk); | |
331 | return 0; | |
332 | } | |
333 | ||
334 | static inline void hci_sock_cmsg(struct sock *sk, struct msghdr *msg, struct sk_buff *skb) | |
335 | { | |
336 | __u32 mask = hci_pi(sk)->cmsg_mask; | |
337 | ||
0d48d939 MH |
338 | if (mask & HCI_CMSG_DIR) { |
339 | int incoming = bt_cb(skb)->incoming; | |
340 | put_cmsg(msg, SOL_HCI, HCI_CMSG_DIR, sizeof(incoming), &incoming); | |
341 | } | |
1da177e4 | 342 | |
a61bbcf2 PM |
343 | if (mask & HCI_CMSG_TSTAMP) { |
344 | struct timeval tv; | |
345 | ||
346 | skb_get_timestamp(skb, &tv); | |
347 | put_cmsg(msg, SOL_HCI, HCI_CMSG_TSTAMP, sizeof(tv), &tv); | |
348 | } | |
1da177e4 | 349 | } |
8e87d142 YH |
350 | |
351 | static int hci_sock_recvmsg(struct kiocb *iocb, struct socket *sock, | |
1da177e4 LT |
352 | struct msghdr *msg, size_t len, int flags) |
353 | { | |
354 | int noblock = flags & MSG_DONTWAIT; | |
355 | struct sock *sk = sock->sk; | |
356 | struct sk_buff *skb; | |
357 | int copied, err; | |
358 | ||
359 | BT_DBG("sock %p, sk %p", sock, sk); | |
360 | ||
361 | if (flags & (MSG_OOB)) | |
362 | return -EOPNOTSUPP; | |
363 | ||
364 | if (sk->sk_state == BT_CLOSED) | |
365 | return 0; | |
366 | ||
367 | if (!(skb = skb_recv_datagram(sk, flags, noblock, &err))) | |
368 | return err; | |
369 | ||
370 | msg->msg_namelen = 0; | |
371 | ||
372 | copied = skb->len; | |
373 | if (len < copied) { | |
374 | msg->msg_flags |= MSG_TRUNC; | |
375 | copied = len; | |
376 | } | |
377 | ||
badff6d0 | 378 | skb_reset_transport_header(skb); |
1da177e4 LT |
379 | err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied); |
380 | ||
381 | hci_sock_cmsg(sk, msg, skb); | |
382 | ||
383 | skb_free_datagram(sk, skb); | |
384 | ||
385 | return err ? : copied; | |
386 | } | |
387 | ||
8e87d142 | 388 | static int hci_sock_sendmsg(struct kiocb *iocb, struct socket *sock, |
1da177e4 LT |
389 | struct msghdr *msg, size_t len) |
390 | { | |
391 | struct sock *sk = sock->sk; | |
392 | struct hci_dev *hdev; | |
393 | struct sk_buff *skb; | |
394 | int err; | |
395 | ||
396 | BT_DBG("sock %p sk %p", sock, sk); | |
397 | ||
398 | if (msg->msg_flags & MSG_OOB) | |
399 | return -EOPNOTSUPP; | |
400 | ||
401 | if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_NOSIGNAL|MSG_ERRQUEUE)) | |
402 | return -EINVAL; | |
403 | ||
404 | if (len < 4 || len > HCI_MAX_FRAME_SIZE) | |
405 | return -EINVAL; | |
406 | ||
407 | lock_sock(sk); | |
408 | ||
409 | if (!(hdev = hci_pi(sk)->hdev)) { | |
410 | err = -EBADFD; | |
411 | goto done; | |
412 | } | |
413 | ||
414 | if (!(skb = bt_skb_send_alloc(sk, len, msg->msg_flags & MSG_DONTWAIT, &err))) | |
415 | goto done; | |
416 | ||
417 | if (memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len)) { | |
418 | err = -EFAULT; | |
419 | goto drop; | |
420 | } | |
421 | ||
0d48d939 | 422 | bt_cb(skb)->pkt_type = *((unsigned char *) skb->data); |
1da177e4 LT |
423 | skb_pull(skb, 1); |
424 | skb->dev = (void *) hdev; | |
425 | ||
0d48d939 | 426 | if (bt_cb(skb)->pkt_type == HCI_COMMAND_PKT) { |
1ebb9252 | 427 | u16 opcode = __le16_to_cpu(get_unaligned((__le16 *) skb->data)); |
1da177e4 LT |
428 | u16 ogf = hci_opcode_ogf(opcode); |
429 | u16 ocf = hci_opcode_ocf(opcode); | |
430 | ||
431 | if (((ogf > HCI_SFLT_MAX_OGF) || | |
432 | !hci_test_bit(ocf & HCI_FLT_OCF_BITS, &hci_sec_filter.ocf_mask[ogf])) && | |
433 | !capable(CAP_NET_RAW)) { | |
434 | err = -EPERM; | |
435 | goto drop; | |
436 | } | |
437 | ||
438 | if (test_bit(HCI_RAW, &hdev->flags) || (ogf == OGF_VENDOR_CMD)) { | |
439 | skb_queue_tail(&hdev->raw_q, skb); | |
440 | hci_sched_tx(hdev); | |
441 | } else { | |
442 | skb_queue_tail(&hdev->cmd_q, skb); | |
443 | hci_sched_cmd(hdev); | |
444 | } | |
445 | } else { | |
446 | if (!capable(CAP_NET_RAW)) { | |
447 | err = -EPERM; | |
448 | goto drop; | |
449 | } | |
450 | ||
451 | skb_queue_tail(&hdev->raw_q, skb); | |
452 | hci_sched_tx(hdev); | |
453 | } | |
454 | ||
455 | err = len; | |
456 | ||
457 | done: | |
458 | release_sock(sk); | |
459 | return err; | |
460 | ||
461 | drop: | |
462 | kfree_skb(skb); | |
463 | goto done; | |
464 | } | |
465 | ||
466 | static int hci_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, int len) | |
467 | { | |
468 | struct hci_ufilter uf = { .opcode = 0 }; | |
469 | struct sock *sk = sock->sk; | |
470 | int err = 0, opt = 0; | |
471 | ||
472 | BT_DBG("sk %p, opt %d", sk, optname); | |
473 | ||
474 | lock_sock(sk); | |
475 | ||
476 | switch (optname) { | |
477 | case HCI_DATA_DIR: | |
478 | if (get_user(opt, (int __user *)optval)) { | |
479 | err = -EFAULT; | |
480 | break; | |
481 | } | |
482 | ||
483 | if (opt) | |
484 | hci_pi(sk)->cmsg_mask |= HCI_CMSG_DIR; | |
485 | else | |
486 | hci_pi(sk)->cmsg_mask &= ~HCI_CMSG_DIR; | |
487 | break; | |
488 | ||
489 | case HCI_TIME_STAMP: | |
490 | if (get_user(opt, (int __user *)optval)) { | |
491 | err = -EFAULT; | |
492 | break; | |
493 | } | |
494 | ||
495 | if (opt) | |
496 | hci_pi(sk)->cmsg_mask |= HCI_CMSG_TSTAMP; | |
497 | else | |
498 | hci_pi(sk)->cmsg_mask &= ~HCI_CMSG_TSTAMP; | |
499 | break; | |
500 | ||
501 | case HCI_FILTER: | |
0878b666 MH |
502 | { |
503 | struct hci_filter *f = &hci_pi(sk)->filter; | |
504 | ||
505 | uf.type_mask = f->type_mask; | |
506 | uf.opcode = f->opcode; | |
507 | uf.event_mask[0] = *((u32 *) f->event_mask + 0); | |
508 | uf.event_mask[1] = *((u32 *) f->event_mask + 1); | |
509 | } | |
510 | ||
1da177e4 LT |
511 | len = min_t(unsigned int, len, sizeof(uf)); |
512 | if (copy_from_user(&uf, optval, len)) { | |
513 | err = -EFAULT; | |
514 | break; | |
515 | } | |
516 | ||
517 | if (!capable(CAP_NET_RAW)) { | |
518 | uf.type_mask &= hci_sec_filter.type_mask; | |
519 | uf.event_mask[0] &= *((u32 *) hci_sec_filter.event_mask + 0); | |
520 | uf.event_mask[1] &= *((u32 *) hci_sec_filter.event_mask + 1); | |
521 | } | |
522 | ||
523 | { | |
524 | struct hci_filter *f = &hci_pi(sk)->filter; | |
525 | ||
526 | f->type_mask = uf.type_mask; | |
527 | f->opcode = uf.opcode; | |
528 | *((u32 *) f->event_mask + 0) = uf.event_mask[0]; | |
529 | *((u32 *) f->event_mask + 1) = uf.event_mask[1]; | |
530 | } | |
8e87d142 | 531 | break; |
1da177e4 LT |
532 | |
533 | default: | |
534 | err = -ENOPROTOOPT; | |
535 | break; | |
536 | } | |
537 | ||
538 | release_sock(sk); | |
539 | return err; | |
540 | } | |
541 | ||
542 | static int hci_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen) | |
543 | { | |
544 | struct hci_ufilter uf; | |
545 | struct sock *sk = sock->sk; | |
8e87d142 | 546 | int len, opt; |
1da177e4 LT |
547 | |
548 | if (get_user(len, optlen)) | |
549 | return -EFAULT; | |
550 | ||
551 | switch (optname) { | |
552 | case HCI_DATA_DIR: | |
553 | if (hci_pi(sk)->cmsg_mask & HCI_CMSG_DIR) | |
554 | opt = 1; | |
8e87d142 | 555 | else |
1da177e4 LT |
556 | opt = 0; |
557 | ||
558 | if (put_user(opt, optval)) | |
559 | return -EFAULT; | |
560 | break; | |
561 | ||
562 | case HCI_TIME_STAMP: | |
563 | if (hci_pi(sk)->cmsg_mask & HCI_CMSG_TSTAMP) | |
564 | opt = 1; | |
8e87d142 | 565 | else |
1da177e4 LT |
566 | opt = 0; |
567 | ||
568 | if (put_user(opt, optval)) | |
569 | return -EFAULT; | |
570 | break; | |
571 | ||
572 | case HCI_FILTER: | |
573 | { | |
574 | struct hci_filter *f = &hci_pi(sk)->filter; | |
575 | ||
576 | uf.type_mask = f->type_mask; | |
577 | uf.opcode = f->opcode; | |
578 | uf.event_mask[0] = *((u32 *) f->event_mask + 0); | |
579 | uf.event_mask[1] = *((u32 *) f->event_mask + 1); | |
580 | } | |
581 | ||
582 | len = min_t(unsigned int, len, sizeof(uf)); | |
583 | if (copy_to_user(optval, &uf, len)) | |
584 | return -EFAULT; | |
585 | break; | |
586 | ||
587 | default: | |
588 | return -ENOPROTOOPT; | |
589 | break; | |
590 | } | |
591 | ||
592 | return 0; | |
593 | } | |
594 | ||
90ddc4f0 | 595 | static const struct proto_ops hci_sock_ops = { |
1da177e4 LT |
596 | .family = PF_BLUETOOTH, |
597 | .owner = THIS_MODULE, | |
598 | .release = hci_sock_release, | |
599 | .bind = hci_sock_bind, | |
600 | .getname = hci_sock_getname, | |
601 | .sendmsg = hci_sock_sendmsg, | |
602 | .recvmsg = hci_sock_recvmsg, | |
603 | .ioctl = hci_sock_ioctl, | |
604 | .poll = datagram_poll, | |
605 | .listen = sock_no_listen, | |
606 | .shutdown = sock_no_shutdown, | |
607 | .setsockopt = hci_sock_setsockopt, | |
608 | .getsockopt = hci_sock_getsockopt, | |
609 | .connect = sock_no_connect, | |
610 | .socketpair = sock_no_socketpair, | |
611 | .accept = sock_no_accept, | |
612 | .mmap = sock_no_mmap | |
613 | }; | |
614 | ||
615 | static struct proto hci_sk_proto = { | |
616 | .name = "HCI", | |
617 | .owner = THIS_MODULE, | |
618 | .obj_size = sizeof(struct hci_pinfo) | |
619 | }; | |
620 | ||
621 | static int hci_sock_create(struct socket *sock, int protocol) | |
622 | { | |
623 | struct sock *sk; | |
624 | ||
625 | BT_DBG("sock %p", sock); | |
626 | ||
627 | if (sock->type != SOCK_RAW) | |
628 | return -ESOCKTNOSUPPORT; | |
629 | ||
630 | sock->ops = &hci_sock_ops; | |
631 | ||
74da626a | 632 | sk = sk_alloc(PF_BLUETOOTH, GFP_ATOMIC, &hci_sk_proto, 1); |
1da177e4 LT |
633 | if (!sk) |
634 | return -ENOMEM; | |
635 | ||
636 | sock_init_data(sock, sk); | |
637 | ||
638 | sock_reset_flag(sk, SOCK_ZAPPED); | |
639 | ||
640 | sk->sk_protocol = protocol; | |
641 | ||
642 | sock->state = SS_UNCONNECTED; | |
643 | sk->sk_state = BT_OPEN; | |
644 | ||
645 | bt_sock_link(&hci_sk_list, sk); | |
646 | return 0; | |
647 | } | |
648 | ||
649 | static int hci_sock_dev_event(struct notifier_block *this, unsigned long event, void *ptr) | |
650 | { | |
651 | struct hci_dev *hdev = (struct hci_dev *) ptr; | |
652 | struct hci_ev_si_device ev; | |
653 | ||
654 | BT_DBG("hdev %s event %ld", hdev->name, event); | |
655 | ||
656 | /* Send event to sockets */ | |
657 | ev.event = event; | |
658 | ev.dev_id = hdev->id; | |
659 | hci_si_event(NULL, HCI_EV_SI_DEVICE, sizeof(ev), &ev); | |
660 | ||
661 | if (event == HCI_DEV_UNREG) { | |
662 | struct sock *sk; | |
663 | struct hlist_node *node; | |
664 | ||
665 | /* Detach sockets from device */ | |
666 | read_lock(&hci_sk_list.lock); | |
667 | sk_for_each(sk, node, &hci_sk_list.head) { | |
b40df574 | 668 | lock_sock(sk); |
1da177e4 LT |
669 | if (hci_pi(sk)->hdev == hdev) { |
670 | hci_pi(sk)->hdev = NULL; | |
671 | sk->sk_err = EPIPE; | |
672 | sk->sk_state = BT_OPEN; | |
673 | sk->sk_state_change(sk); | |
674 | ||
675 | hci_dev_put(hdev); | |
676 | } | |
b40df574 | 677 | release_sock(sk); |
1da177e4 LT |
678 | } |
679 | read_unlock(&hci_sk_list.lock); | |
680 | } | |
681 | ||
682 | return NOTIFY_DONE; | |
683 | } | |
684 | ||
685 | static struct net_proto_family hci_sock_family_ops = { | |
686 | .family = PF_BLUETOOTH, | |
687 | .owner = THIS_MODULE, | |
688 | .create = hci_sock_create, | |
689 | }; | |
690 | ||
691 | static struct notifier_block hci_sock_nblock = { | |
692 | .notifier_call = hci_sock_dev_event | |
693 | }; | |
694 | ||
695 | int __init hci_sock_init(void) | |
696 | { | |
697 | int err; | |
698 | ||
699 | err = proto_register(&hci_sk_proto, 0); | |
700 | if (err < 0) | |
701 | return err; | |
702 | ||
703 | err = bt_sock_register(BTPROTO_HCI, &hci_sock_family_ops); | |
704 | if (err < 0) | |
705 | goto error; | |
706 | ||
707 | hci_register_notifier(&hci_sock_nblock); | |
708 | ||
709 | BT_INFO("HCI socket layer initialized"); | |
710 | ||
711 | return 0; | |
712 | ||
713 | error: | |
714 | BT_ERR("HCI socket registration failed"); | |
715 | proto_unregister(&hci_sk_proto); | |
716 | return err; | |
717 | } | |
718 | ||
719 | int __exit hci_sock_cleanup(void) | |
720 | { | |
721 | if (bt_sock_unregister(BTPROTO_HCI) < 0) | |
722 | BT_ERR("HCI socket unregistration failed"); | |
723 | ||
724 | hci_unregister_notifier(&hci_sock_nblock); | |
725 | ||
726 | proto_unregister(&hci_sk_proto); | |
727 | ||
728 | return 0; | |
729 | } |