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> | |
767c5eb5 | 40 | #include <linux/compat.h> |
1da177e4 LT |
41 | #include <linux/socket.h> |
42 | #include <linux/ioctl.h> | |
43 | #include <net/sock.h> | |
44 | ||
45 | #include <asm/system.h> | |
70f23020 | 46 | #include <linux/uaccess.h> |
1da177e4 LT |
47 | #include <asm/unaligned.h> |
48 | ||
49 | #include <net/bluetooth/bluetooth.h> | |
50 | #include <net/bluetooth/hci_core.h> | |
51 | ||
0381101f JH |
52 | static int enable_mgmt; |
53 | ||
1da177e4 LT |
54 | /* ----- HCI socket interface ----- */ |
55 | ||
56 | static inline int hci_test_bit(int nr, void *addr) | |
57 | { | |
58 | return *((__u32 *) addr + (nr >> 5)) & ((__u32) 1 << (nr & 31)); | |
59 | } | |
60 | ||
61 | /* Security filter */ | |
62 | static struct hci_sec_filter hci_sec_filter = { | |
63 | /* Packet types */ | |
64 | 0x10, | |
65 | /* Events */ | |
dd7f5527 | 66 | { 0x1000d9fe, 0x0000b00c }, |
1da177e4 LT |
67 | /* Commands */ |
68 | { | |
69 | { 0x0 }, | |
70 | /* OGF_LINK_CTL */ | |
7c631a67 | 71 | { 0xbe000006, 0x00000001, 0x00000000, 0x00 }, |
1da177e4 | 72 | /* OGF_LINK_POLICY */ |
7c631a67 | 73 | { 0x00005200, 0x00000000, 0x00000000, 0x00 }, |
1da177e4 | 74 | /* OGF_HOST_CTL */ |
7c631a67 | 75 | { 0xaab00200, 0x2b402aaa, 0x05220154, 0x00 }, |
1da177e4 | 76 | /* OGF_INFO_PARAM */ |
7c631a67 | 77 | { 0x000002be, 0x00000000, 0x00000000, 0x00 }, |
1da177e4 | 78 | /* OGF_STATUS_PARAM */ |
7c631a67 | 79 | { 0x000000ea, 0x00000000, 0x00000000, 0x00 } |
1da177e4 LT |
80 | } |
81 | }; | |
82 | ||
83 | static struct bt_sock_list hci_sk_list = { | |
d5fb2962 | 84 | .lock = __RW_LOCK_UNLOCKED(hci_sk_list.lock) |
1da177e4 LT |
85 | }; |
86 | ||
87 | /* Send frame to RAW socket */ | |
eec8d2bc JH |
88 | void hci_send_to_sock(struct hci_dev *hdev, struct sk_buff *skb, |
89 | struct sock *skip_sk) | |
1da177e4 LT |
90 | { |
91 | struct sock *sk; | |
92 | struct hlist_node *node; | |
93 | ||
94 | BT_DBG("hdev %p len %d", hdev, skb->len); | |
95 | ||
96 | read_lock(&hci_sk_list.lock); | |
97 | sk_for_each(sk, node, &hci_sk_list.head) { | |
98 | struct hci_filter *flt; | |
99 | struct sk_buff *nskb; | |
100 | ||
eec8d2bc JH |
101 | if (sk == skip_sk) |
102 | continue; | |
103 | ||
1da177e4 LT |
104 | if (sk->sk_state != BT_BOUND || hci_pi(sk)->hdev != hdev) |
105 | continue; | |
106 | ||
107 | /* Don't send frame to the socket it came from */ | |
108 | if (skb->sk == sk) | |
109 | continue; | |
110 | ||
a40c406c JH |
111 | if (bt_cb(skb)->channel != hci_pi(sk)->channel) |
112 | continue; | |
113 | ||
114 | if (bt_cb(skb)->channel == HCI_CHANNEL_CONTROL) | |
115 | goto clone; | |
116 | ||
1da177e4 LT |
117 | /* Apply filter */ |
118 | flt = &hci_pi(sk)->filter; | |
119 | ||
0d48d939 MH |
120 | if (!test_bit((bt_cb(skb)->pkt_type == HCI_VENDOR_PKT) ? |
121 | 0 : (bt_cb(skb)->pkt_type & HCI_FLT_TYPE_BITS), &flt->type_mask)) | |
1da177e4 LT |
122 | continue; |
123 | ||
0d48d939 | 124 | if (bt_cb(skb)->pkt_type == HCI_EVENT_PKT) { |
1da177e4 LT |
125 | register int evt = (*(__u8 *)skb->data & HCI_FLT_EVENT_BITS); |
126 | ||
127 | if (!hci_test_bit(evt, &flt->event_mask)) | |
128 | continue; | |
129 | ||
4498c80d DM |
130 | if (flt->opcode && |
131 | ((evt == HCI_EV_CMD_COMPLETE && | |
132 | flt->opcode != | |
905f3ed6 | 133 | get_unaligned((__le16 *)(skb->data + 3))) || |
4498c80d DM |
134 | (evt == HCI_EV_CMD_STATUS && |
135 | flt->opcode != | |
905f3ed6 | 136 | get_unaligned((__le16 *)(skb->data + 4))))) |
1da177e4 LT |
137 | continue; |
138 | } | |
139 | ||
a40c406c | 140 | clone: |
70f23020 AE |
141 | nskb = skb_clone(skb, GFP_ATOMIC); |
142 | if (!nskb) | |
1da177e4 LT |
143 | continue; |
144 | ||
145 | /* Put type byte before the data */ | |
a40c406c JH |
146 | if (bt_cb(skb)->channel == HCI_CHANNEL_RAW) |
147 | memcpy(skb_push(nskb, 1), &bt_cb(nskb)->pkt_type, 1); | |
1da177e4 LT |
148 | |
149 | if (sock_queue_rcv_skb(sk, nskb)) | |
150 | kfree_skb(nskb); | |
151 | } | |
152 | read_unlock(&hci_sk_list.lock); | |
153 | } | |
154 | ||
155 | static int hci_sock_release(struct socket *sock) | |
156 | { | |
157 | struct sock *sk = sock->sk; | |
7b005bd3 | 158 | struct hci_dev *hdev; |
1da177e4 LT |
159 | |
160 | BT_DBG("sock %p sk %p", sock, sk); | |
161 | ||
162 | if (!sk) | |
163 | return 0; | |
164 | ||
7b005bd3 MH |
165 | hdev = hci_pi(sk)->hdev; |
166 | ||
1da177e4 LT |
167 | bt_sock_unlink(&hci_sk_list, sk); |
168 | ||
169 | if (hdev) { | |
170 | atomic_dec(&hdev->promisc); | |
171 | hci_dev_put(hdev); | |
172 | } | |
173 | ||
174 | sock_orphan(sk); | |
175 | ||
176 | skb_queue_purge(&sk->sk_receive_queue); | |
177 | skb_queue_purge(&sk->sk_write_queue); | |
178 | ||
179 | sock_put(sk); | |
180 | return 0; | |
181 | } | |
182 | ||
b2a66aad | 183 | static int hci_sock_blacklist_add(struct hci_dev *hdev, void __user *arg) |
f0358568 JH |
184 | { |
185 | bdaddr_t bdaddr; | |
f0358568 JH |
186 | |
187 | if (copy_from_user(&bdaddr, arg, sizeof(bdaddr))) | |
188 | return -EFAULT; | |
189 | ||
b2a66aad | 190 | return hci_blacklist_add(hdev, &bdaddr); |
f0358568 JH |
191 | } |
192 | ||
b2a66aad | 193 | static int hci_sock_blacklist_del(struct hci_dev *hdev, void __user *arg) |
f0358568 JH |
194 | { |
195 | bdaddr_t bdaddr; | |
f0358568 JH |
196 | |
197 | if (copy_from_user(&bdaddr, arg, sizeof(bdaddr))) | |
198 | return -EFAULT; | |
199 | ||
b2a66aad | 200 | return hci_blacklist_del(hdev, &bdaddr); |
f0358568 JH |
201 | } |
202 | ||
8e87d142 | 203 | /* Ioctls that require bound socket */ |
1da177e4 LT |
204 | static inline int hci_sock_bound_ioctl(struct sock *sk, unsigned int cmd, unsigned long arg) |
205 | { | |
206 | struct hci_dev *hdev = hci_pi(sk)->hdev; | |
207 | ||
208 | if (!hdev) | |
209 | return -EBADFD; | |
210 | ||
211 | switch (cmd) { | |
212 | case HCISETRAW: | |
213 | if (!capable(CAP_NET_ADMIN)) | |
214 | return -EACCES; | |
215 | ||
216 | if (test_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks)) | |
217 | return -EPERM; | |
218 | ||
219 | if (arg) | |
220 | set_bit(HCI_RAW, &hdev->flags); | |
221 | else | |
222 | clear_bit(HCI_RAW, &hdev->flags); | |
223 | ||
224 | return 0; | |
225 | ||
1da177e4 | 226 | case HCIGETCONNINFO: |
40be492f MH |
227 | return hci_get_conn_info(hdev, (void __user *) arg); |
228 | ||
229 | case HCIGETAUTHINFO: | |
230 | return hci_get_auth_info(hdev, (void __user *) arg); | |
1da177e4 | 231 | |
f0358568 JH |
232 | case HCIBLOCKADDR: |
233 | if (!capable(CAP_NET_ADMIN)) | |
234 | return -EACCES; | |
b2a66aad | 235 | return hci_sock_blacklist_add(hdev, (void __user *) arg); |
f0358568 JH |
236 | |
237 | case HCIUNBLOCKADDR: | |
238 | if (!capable(CAP_NET_ADMIN)) | |
239 | return -EACCES; | |
b2a66aad | 240 | return hci_sock_blacklist_del(hdev, (void __user *) arg); |
f0358568 | 241 | |
1da177e4 LT |
242 | default: |
243 | if (hdev->ioctl) | |
244 | return hdev->ioctl(hdev, cmd, arg); | |
245 | return -EINVAL; | |
246 | } | |
247 | } | |
248 | ||
249 | static int hci_sock_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
250 | { | |
251 | struct sock *sk = sock->sk; | |
40be492f | 252 | void __user *argp = (void __user *) arg; |
1da177e4 LT |
253 | int err; |
254 | ||
255 | BT_DBG("cmd %x arg %lx", cmd, arg); | |
256 | ||
257 | switch (cmd) { | |
258 | case HCIGETDEVLIST: | |
259 | return hci_get_dev_list(argp); | |
260 | ||
261 | case HCIGETDEVINFO: | |
262 | return hci_get_dev_info(argp); | |
263 | ||
264 | case HCIGETCONNLIST: | |
265 | return hci_get_conn_list(argp); | |
266 | ||
267 | case HCIDEVUP: | |
268 | if (!capable(CAP_NET_ADMIN)) | |
269 | return -EACCES; | |
270 | return hci_dev_open(arg); | |
271 | ||
272 | case HCIDEVDOWN: | |
273 | if (!capable(CAP_NET_ADMIN)) | |
274 | return -EACCES; | |
275 | return hci_dev_close(arg); | |
276 | ||
277 | case HCIDEVRESET: | |
278 | if (!capable(CAP_NET_ADMIN)) | |
279 | return -EACCES; | |
280 | return hci_dev_reset(arg); | |
281 | ||
282 | case HCIDEVRESTAT: | |
283 | if (!capable(CAP_NET_ADMIN)) | |
284 | return -EACCES; | |
285 | return hci_dev_reset_stat(arg); | |
286 | ||
287 | case HCISETSCAN: | |
288 | case HCISETAUTH: | |
289 | case HCISETENCRYPT: | |
290 | case HCISETPTYPE: | |
291 | case HCISETLINKPOL: | |
292 | case HCISETLINKMODE: | |
293 | case HCISETACLMTU: | |
294 | case HCISETSCOMTU: | |
295 | if (!capable(CAP_NET_ADMIN)) | |
296 | return -EACCES; | |
297 | return hci_dev_cmd(cmd, argp); | |
298 | ||
299 | case HCIINQUIRY: | |
300 | return hci_inquiry(argp); | |
301 | ||
302 | default: | |
303 | lock_sock(sk); | |
304 | err = hci_sock_bound_ioctl(sk, cmd, arg); | |
305 | release_sock(sk); | |
306 | return err; | |
307 | } | |
308 | } | |
309 | ||
310 | static int hci_sock_bind(struct socket *sock, struct sockaddr *addr, int addr_len) | |
311 | { | |
0381101f | 312 | struct sockaddr_hci haddr; |
1da177e4 LT |
313 | struct sock *sk = sock->sk; |
314 | struct hci_dev *hdev = NULL; | |
0381101f | 315 | int len, err = 0; |
1da177e4 LT |
316 | |
317 | BT_DBG("sock %p sk %p", sock, sk); | |
318 | ||
0381101f JH |
319 | if (!addr) |
320 | return -EINVAL; | |
321 | ||
322 | memset(&haddr, 0, sizeof(haddr)); | |
323 | len = min_t(unsigned int, sizeof(haddr), addr_len); | |
324 | memcpy(&haddr, addr, len); | |
325 | ||
326 | if (haddr.hci_family != AF_BLUETOOTH) | |
327 | return -EINVAL; | |
328 | ||
17f9cc31 GP |
329 | if (haddr.hci_channel > HCI_CHANNEL_CONTROL) |
330 | return -EINVAL; | |
331 | ||
332 | if (haddr.hci_channel == HCI_CHANNEL_CONTROL && !enable_mgmt) | |
1da177e4 LT |
333 | return -EINVAL; |
334 | ||
335 | lock_sock(sk); | |
336 | ||
0381101f | 337 | if (sk->sk_state == BT_BOUND || hci_pi(sk)->hdev) { |
1da177e4 LT |
338 | err = -EALREADY; |
339 | goto done; | |
340 | } | |
341 | ||
0381101f JH |
342 | if (haddr.hci_dev != HCI_DEV_NONE) { |
343 | hdev = hci_dev_get(haddr.hci_dev); | |
70f23020 | 344 | if (!hdev) { |
1da177e4 LT |
345 | err = -ENODEV; |
346 | goto done; | |
347 | } | |
348 | ||
349 | atomic_inc(&hdev->promisc); | |
350 | } | |
351 | ||
0381101f | 352 | hci_pi(sk)->channel = haddr.hci_channel; |
1da177e4 LT |
353 | hci_pi(sk)->hdev = hdev; |
354 | sk->sk_state = BT_BOUND; | |
355 | ||
356 | done: | |
357 | release_sock(sk); | |
358 | return err; | |
359 | } | |
360 | ||
361 | static int hci_sock_getname(struct socket *sock, struct sockaddr *addr, int *addr_len, int peer) | |
362 | { | |
363 | struct sockaddr_hci *haddr = (struct sockaddr_hci *) addr; | |
364 | struct sock *sk = sock->sk; | |
7b005bd3 | 365 | struct hci_dev *hdev = hci_pi(sk)->hdev; |
1da177e4 LT |
366 | |
367 | BT_DBG("sock %p sk %p", sock, sk); | |
368 | ||
7b005bd3 MH |
369 | if (!hdev) |
370 | return -EBADFD; | |
371 | ||
1da177e4 LT |
372 | lock_sock(sk); |
373 | ||
374 | *addr_len = sizeof(*haddr); | |
375 | haddr->hci_family = AF_BLUETOOTH; | |
7b005bd3 | 376 | haddr->hci_dev = hdev->id; |
1da177e4 LT |
377 | |
378 | release_sock(sk); | |
379 | return 0; | |
380 | } | |
381 | ||
382 | static inline void hci_sock_cmsg(struct sock *sk, struct msghdr *msg, struct sk_buff *skb) | |
383 | { | |
384 | __u32 mask = hci_pi(sk)->cmsg_mask; | |
385 | ||
0d48d939 MH |
386 | if (mask & HCI_CMSG_DIR) { |
387 | int incoming = bt_cb(skb)->incoming; | |
388 | put_cmsg(msg, SOL_HCI, HCI_CMSG_DIR, sizeof(incoming), &incoming); | |
389 | } | |
1da177e4 | 390 | |
a61bbcf2 | 391 | if (mask & HCI_CMSG_TSTAMP) { |
f6e623a6 JFS |
392 | #ifdef CONFIG_COMPAT |
393 | struct compat_timeval ctv; | |
394 | #endif | |
a61bbcf2 | 395 | struct timeval tv; |
767c5eb5 MH |
396 | void *data; |
397 | int len; | |
a61bbcf2 PM |
398 | |
399 | skb_get_timestamp(skb, &tv); | |
767c5eb5 | 400 | |
1da97f83 DM |
401 | data = &tv; |
402 | len = sizeof(tv); | |
403 | #ifdef CONFIG_COMPAT | |
767c5eb5 | 404 | if (msg->msg_flags & MSG_CMSG_COMPAT) { |
767c5eb5 MH |
405 | ctv.tv_sec = tv.tv_sec; |
406 | ctv.tv_usec = tv.tv_usec; | |
407 | data = &ctv; | |
408 | len = sizeof(ctv); | |
767c5eb5 | 409 | } |
1da97f83 | 410 | #endif |
767c5eb5 MH |
411 | |
412 | put_cmsg(msg, SOL_HCI, HCI_CMSG_TSTAMP, len, data); | |
a61bbcf2 | 413 | } |
1da177e4 | 414 | } |
8e87d142 YH |
415 | |
416 | static int hci_sock_recvmsg(struct kiocb *iocb, struct socket *sock, | |
1da177e4 LT |
417 | struct msghdr *msg, size_t len, int flags) |
418 | { | |
419 | int noblock = flags & MSG_DONTWAIT; | |
420 | struct sock *sk = sock->sk; | |
421 | struct sk_buff *skb; | |
422 | int copied, err; | |
423 | ||
424 | BT_DBG("sock %p, sk %p", sock, sk); | |
425 | ||
426 | if (flags & (MSG_OOB)) | |
427 | return -EOPNOTSUPP; | |
428 | ||
429 | if (sk->sk_state == BT_CLOSED) | |
430 | return 0; | |
431 | ||
70f23020 AE |
432 | skb = skb_recv_datagram(sk, flags, noblock, &err); |
433 | if (!skb) | |
1da177e4 LT |
434 | return err; |
435 | ||
436 | msg->msg_namelen = 0; | |
437 | ||
438 | copied = skb->len; | |
439 | if (len < copied) { | |
440 | msg->msg_flags |= MSG_TRUNC; | |
441 | copied = len; | |
442 | } | |
443 | ||
badff6d0 | 444 | skb_reset_transport_header(skb); |
1da177e4 LT |
445 | err = skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied); |
446 | ||
447 | hci_sock_cmsg(sk, msg, skb); | |
448 | ||
449 | skb_free_datagram(sk, skb); | |
450 | ||
451 | return err ? : copied; | |
452 | } | |
453 | ||
8e87d142 | 454 | static int hci_sock_sendmsg(struct kiocb *iocb, struct socket *sock, |
1da177e4 LT |
455 | struct msghdr *msg, size_t len) |
456 | { | |
457 | struct sock *sk = sock->sk; | |
458 | struct hci_dev *hdev; | |
459 | struct sk_buff *skb; | |
460 | int err; | |
461 | ||
462 | BT_DBG("sock %p sk %p", sock, sk); | |
463 | ||
464 | if (msg->msg_flags & MSG_OOB) | |
465 | return -EOPNOTSUPP; | |
466 | ||
467 | if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_NOSIGNAL|MSG_ERRQUEUE)) | |
468 | return -EINVAL; | |
469 | ||
470 | if (len < 4 || len > HCI_MAX_FRAME_SIZE) | |
471 | return -EINVAL; | |
472 | ||
473 | lock_sock(sk); | |
474 | ||
0381101f JH |
475 | switch (hci_pi(sk)->channel) { |
476 | case HCI_CHANNEL_RAW: | |
477 | break; | |
478 | case HCI_CHANNEL_CONTROL: | |
479 | err = mgmt_control(sk, msg, len); | |
480 | goto done; | |
481 | default: | |
482 | err = -EINVAL; | |
483 | goto done; | |
484 | } | |
485 | ||
70f23020 AE |
486 | hdev = hci_pi(sk)->hdev; |
487 | if (!hdev) { | |
1da177e4 LT |
488 | err = -EBADFD; |
489 | goto done; | |
490 | } | |
491 | ||
7e21addc MH |
492 | if (!test_bit(HCI_UP, &hdev->flags)) { |
493 | err = -ENETDOWN; | |
494 | goto done; | |
495 | } | |
496 | ||
70f23020 AE |
497 | skb = bt_skb_send_alloc(sk, len, msg->msg_flags & MSG_DONTWAIT, &err); |
498 | if (!skb) | |
1da177e4 LT |
499 | goto done; |
500 | ||
501 | if (memcpy_fromiovec(skb_put(skb, len), msg->msg_iov, len)) { | |
502 | err = -EFAULT; | |
503 | goto drop; | |
504 | } | |
505 | ||
0d48d939 | 506 | bt_cb(skb)->pkt_type = *((unsigned char *) skb->data); |
1da177e4 LT |
507 | skb_pull(skb, 1); |
508 | skb->dev = (void *) hdev; | |
509 | ||
0d48d939 | 510 | if (bt_cb(skb)->pkt_type == HCI_COMMAND_PKT) { |
83985319 | 511 | u16 opcode = get_unaligned_le16(skb->data); |
1da177e4 LT |
512 | u16 ogf = hci_opcode_ogf(opcode); |
513 | u16 ocf = hci_opcode_ocf(opcode); | |
514 | ||
515 | if (((ogf > HCI_SFLT_MAX_OGF) || | |
516 | !hci_test_bit(ocf & HCI_FLT_OCF_BITS, &hci_sec_filter.ocf_mask[ogf])) && | |
517 | !capable(CAP_NET_RAW)) { | |
518 | err = -EPERM; | |
519 | goto drop; | |
520 | } | |
521 | ||
a9de9248 | 522 | if (test_bit(HCI_RAW, &hdev->flags) || (ogf == 0x3f)) { |
1da177e4 | 523 | skb_queue_tail(&hdev->raw_q, skb); |
c78ae283 | 524 | tasklet_schedule(&hdev->tx_task); |
1da177e4 LT |
525 | } else { |
526 | skb_queue_tail(&hdev->cmd_q, skb); | |
c78ae283 | 527 | tasklet_schedule(&hdev->cmd_task); |
1da177e4 LT |
528 | } |
529 | } else { | |
530 | if (!capable(CAP_NET_RAW)) { | |
531 | err = -EPERM; | |
532 | goto drop; | |
533 | } | |
534 | ||
535 | skb_queue_tail(&hdev->raw_q, skb); | |
c78ae283 | 536 | tasklet_schedule(&hdev->tx_task); |
1da177e4 LT |
537 | } |
538 | ||
539 | err = len; | |
540 | ||
541 | done: | |
542 | release_sock(sk); | |
543 | return err; | |
544 | ||
545 | drop: | |
546 | kfree_skb(skb); | |
547 | goto done; | |
548 | } | |
549 | ||
b7058842 | 550 | static int hci_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int len) |
1da177e4 LT |
551 | { |
552 | struct hci_ufilter uf = { .opcode = 0 }; | |
553 | struct sock *sk = sock->sk; | |
554 | int err = 0, opt = 0; | |
555 | ||
556 | BT_DBG("sk %p, opt %d", sk, optname); | |
557 | ||
558 | lock_sock(sk); | |
559 | ||
560 | switch (optname) { | |
561 | case HCI_DATA_DIR: | |
562 | if (get_user(opt, (int __user *)optval)) { | |
563 | err = -EFAULT; | |
564 | break; | |
565 | } | |
566 | ||
567 | if (opt) | |
568 | hci_pi(sk)->cmsg_mask |= HCI_CMSG_DIR; | |
569 | else | |
570 | hci_pi(sk)->cmsg_mask &= ~HCI_CMSG_DIR; | |
571 | break; | |
572 | ||
573 | case HCI_TIME_STAMP: | |
574 | if (get_user(opt, (int __user *)optval)) { | |
575 | err = -EFAULT; | |
576 | break; | |
577 | } | |
578 | ||
579 | if (opt) | |
580 | hci_pi(sk)->cmsg_mask |= HCI_CMSG_TSTAMP; | |
581 | else | |
582 | hci_pi(sk)->cmsg_mask &= ~HCI_CMSG_TSTAMP; | |
583 | break; | |
584 | ||
585 | case HCI_FILTER: | |
0878b666 MH |
586 | { |
587 | struct hci_filter *f = &hci_pi(sk)->filter; | |
588 | ||
589 | uf.type_mask = f->type_mask; | |
590 | uf.opcode = f->opcode; | |
591 | uf.event_mask[0] = *((u32 *) f->event_mask + 0); | |
592 | uf.event_mask[1] = *((u32 *) f->event_mask + 1); | |
593 | } | |
594 | ||
1da177e4 LT |
595 | len = min_t(unsigned int, len, sizeof(uf)); |
596 | if (copy_from_user(&uf, optval, len)) { | |
597 | err = -EFAULT; | |
598 | break; | |
599 | } | |
600 | ||
601 | if (!capable(CAP_NET_RAW)) { | |
602 | uf.type_mask &= hci_sec_filter.type_mask; | |
603 | uf.event_mask[0] &= *((u32 *) hci_sec_filter.event_mask + 0); | |
604 | uf.event_mask[1] &= *((u32 *) hci_sec_filter.event_mask + 1); | |
605 | } | |
606 | ||
607 | { | |
608 | struct hci_filter *f = &hci_pi(sk)->filter; | |
609 | ||
610 | f->type_mask = uf.type_mask; | |
611 | f->opcode = uf.opcode; | |
612 | *((u32 *) f->event_mask + 0) = uf.event_mask[0]; | |
613 | *((u32 *) f->event_mask + 1) = uf.event_mask[1]; | |
614 | } | |
8e87d142 | 615 | break; |
1da177e4 LT |
616 | |
617 | default: | |
618 | err = -ENOPROTOOPT; | |
619 | break; | |
620 | } | |
621 | ||
622 | release_sock(sk); | |
623 | return err; | |
624 | } | |
625 | ||
626 | static int hci_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen) | |
627 | { | |
628 | struct hci_ufilter uf; | |
629 | struct sock *sk = sock->sk; | |
8e87d142 | 630 | int len, opt; |
1da177e4 LT |
631 | |
632 | if (get_user(len, optlen)) | |
633 | return -EFAULT; | |
634 | ||
635 | switch (optname) { | |
636 | case HCI_DATA_DIR: | |
637 | if (hci_pi(sk)->cmsg_mask & HCI_CMSG_DIR) | |
638 | opt = 1; | |
8e87d142 | 639 | else |
1da177e4 LT |
640 | opt = 0; |
641 | ||
642 | if (put_user(opt, optval)) | |
643 | return -EFAULT; | |
644 | break; | |
645 | ||
646 | case HCI_TIME_STAMP: | |
647 | if (hci_pi(sk)->cmsg_mask & HCI_CMSG_TSTAMP) | |
648 | opt = 1; | |
8e87d142 | 649 | else |
1da177e4 LT |
650 | opt = 0; |
651 | ||
652 | if (put_user(opt, optval)) | |
653 | return -EFAULT; | |
654 | break; | |
655 | ||
656 | case HCI_FILTER: | |
657 | { | |
658 | struct hci_filter *f = &hci_pi(sk)->filter; | |
659 | ||
660 | uf.type_mask = f->type_mask; | |
661 | uf.opcode = f->opcode; | |
662 | uf.event_mask[0] = *((u32 *) f->event_mask + 0); | |
663 | uf.event_mask[1] = *((u32 *) f->event_mask + 1); | |
664 | } | |
665 | ||
666 | len = min_t(unsigned int, len, sizeof(uf)); | |
667 | if (copy_to_user(optval, &uf, len)) | |
668 | return -EFAULT; | |
669 | break; | |
670 | ||
671 | default: | |
672 | return -ENOPROTOOPT; | |
673 | break; | |
674 | } | |
675 | ||
676 | return 0; | |
677 | } | |
678 | ||
90ddc4f0 | 679 | static const struct proto_ops hci_sock_ops = { |
1da177e4 LT |
680 | .family = PF_BLUETOOTH, |
681 | .owner = THIS_MODULE, | |
682 | .release = hci_sock_release, | |
683 | .bind = hci_sock_bind, | |
684 | .getname = hci_sock_getname, | |
685 | .sendmsg = hci_sock_sendmsg, | |
686 | .recvmsg = hci_sock_recvmsg, | |
687 | .ioctl = hci_sock_ioctl, | |
688 | .poll = datagram_poll, | |
689 | .listen = sock_no_listen, | |
690 | .shutdown = sock_no_shutdown, | |
691 | .setsockopt = hci_sock_setsockopt, | |
692 | .getsockopt = hci_sock_getsockopt, | |
693 | .connect = sock_no_connect, | |
694 | .socketpair = sock_no_socketpair, | |
695 | .accept = sock_no_accept, | |
696 | .mmap = sock_no_mmap | |
697 | }; | |
698 | ||
699 | static struct proto hci_sk_proto = { | |
700 | .name = "HCI", | |
701 | .owner = THIS_MODULE, | |
702 | .obj_size = sizeof(struct hci_pinfo) | |
703 | }; | |
704 | ||
3f378b68 EP |
705 | static int hci_sock_create(struct net *net, struct socket *sock, int protocol, |
706 | int kern) | |
1da177e4 LT |
707 | { |
708 | struct sock *sk; | |
709 | ||
710 | BT_DBG("sock %p", sock); | |
711 | ||
712 | if (sock->type != SOCK_RAW) | |
713 | return -ESOCKTNOSUPPORT; | |
714 | ||
715 | sock->ops = &hci_sock_ops; | |
716 | ||
6257ff21 | 717 | sk = sk_alloc(net, PF_BLUETOOTH, GFP_ATOMIC, &hci_sk_proto); |
1da177e4 LT |
718 | if (!sk) |
719 | return -ENOMEM; | |
720 | ||
721 | sock_init_data(sock, sk); | |
722 | ||
723 | sock_reset_flag(sk, SOCK_ZAPPED); | |
724 | ||
725 | sk->sk_protocol = protocol; | |
726 | ||
727 | sock->state = SS_UNCONNECTED; | |
728 | sk->sk_state = BT_OPEN; | |
729 | ||
730 | bt_sock_link(&hci_sk_list, sk); | |
731 | return 0; | |
732 | } | |
733 | ||
734 | static int hci_sock_dev_event(struct notifier_block *this, unsigned long event, void *ptr) | |
735 | { | |
736 | struct hci_dev *hdev = (struct hci_dev *) ptr; | |
737 | struct hci_ev_si_device ev; | |
738 | ||
739 | BT_DBG("hdev %s event %ld", hdev->name, event); | |
740 | ||
741 | /* Send event to sockets */ | |
742 | ev.event = event; | |
743 | ev.dev_id = hdev->id; | |
744 | hci_si_event(NULL, HCI_EV_SI_DEVICE, sizeof(ev), &ev); | |
745 | ||
746 | if (event == HCI_DEV_UNREG) { | |
747 | struct sock *sk; | |
748 | struct hlist_node *node; | |
749 | ||
750 | /* Detach sockets from device */ | |
751 | read_lock(&hci_sk_list.lock); | |
752 | sk_for_each(sk, node, &hci_sk_list.head) { | |
4ce61d1c SS |
753 | local_bh_disable(); |
754 | bh_lock_sock_nested(sk); | |
1da177e4 LT |
755 | if (hci_pi(sk)->hdev == hdev) { |
756 | hci_pi(sk)->hdev = NULL; | |
757 | sk->sk_err = EPIPE; | |
758 | sk->sk_state = BT_OPEN; | |
759 | sk->sk_state_change(sk); | |
760 | ||
761 | hci_dev_put(hdev); | |
762 | } | |
4ce61d1c SS |
763 | bh_unlock_sock(sk); |
764 | local_bh_enable(); | |
1da177e4 LT |
765 | } |
766 | read_unlock(&hci_sk_list.lock); | |
767 | } | |
768 | ||
769 | return NOTIFY_DONE; | |
770 | } | |
771 | ||
ec1b4cf7 | 772 | static const struct net_proto_family hci_sock_family_ops = { |
1da177e4 LT |
773 | .family = PF_BLUETOOTH, |
774 | .owner = THIS_MODULE, | |
775 | .create = hci_sock_create, | |
776 | }; | |
777 | ||
778 | static struct notifier_block hci_sock_nblock = { | |
779 | .notifier_call = hci_sock_dev_event | |
780 | }; | |
781 | ||
782 | int __init hci_sock_init(void) | |
783 | { | |
784 | int err; | |
785 | ||
786 | err = proto_register(&hci_sk_proto, 0); | |
787 | if (err < 0) | |
788 | return err; | |
789 | ||
790 | err = bt_sock_register(BTPROTO_HCI, &hci_sock_family_ops); | |
791 | if (err < 0) | |
792 | goto error; | |
793 | ||
794 | hci_register_notifier(&hci_sock_nblock); | |
795 | ||
796 | BT_INFO("HCI socket layer initialized"); | |
797 | ||
798 | return 0; | |
799 | ||
800 | error: | |
801 | BT_ERR("HCI socket registration failed"); | |
802 | proto_unregister(&hci_sk_proto); | |
803 | return err; | |
804 | } | |
805 | ||
b7440a14 | 806 | void hci_sock_cleanup(void) |
1da177e4 LT |
807 | { |
808 | if (bt_sock_unregister(BTPROTO_HCI) < 0) | |
809 | BT_ERR("HCI socket unregistration failed"); | |
810 | ||
811 | hci_unregister_notifier(&hci_sock_nblock); | |
812 | ||
813 | proto_unregister(&hci_sk_proto); | |
1da177e4 | 814 | } |
0381101f JH |
815 | |
816 | module_param(enable_mgmt, bool, 0644); | |
817 | MODULE_PARM_DESC(enable_mgmt, "Enable Management interface"); |