Commit | Line | Data |
---|---|---|
bb58f747 GP |
1 | /* |
2 | BlueZ - Bluetooth protocol stack for Linux | |
3 | Copyright (C) 2000-2001 Qualcomm Incorporated | |
4 | Copyright (C) 2009-2010 Gustavo F. Padovan <gustavo@padovan.org> | |
5 | Copyright (C) 2010 Google Inc. | |
590051de | 6 | Copyright (C) 2011 ProFUSION Embedded Systems |
bb58f747 GP |
7 | |
8 | Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com> | |
9 | ||
10 | This program is free software; you can redistribute it and/or modify | |
11 | it under the terms of the GNU General Public License version 2 as | |
12 | published by the Free Software Foundation; | |
13 | ||
14 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
15 | OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
16 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. | |
17 | IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY | |
18 | CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES | |
19 | WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
20 | ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
21 | OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
22 | ||
23 | ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, | |
24 | COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS | |
25 | SOFTWARE IS DISCLAIMED. | |
26 | */ | |
27 | ||
28 | /* Bluetooth L2CAP sockets. */ | |
29 | ||
6230c9b4 | 30 | #include <linux/security.h> |
bc3b2d7f | 31 | #include <linux/export.h> |
6230c9b4 | 32 | |
bb58f747 | 33 | #include <net/bluetooth/bluetooth.h> |
33575df7 | 34 | #include <net/bluetooth/hci_core.h> |
bb58f747 | 35 | #include <net/bluetooth/l2cap.h> |
f1cb9af5 | 36 | #include <net/bluetooth/smp.h> |
bb58f747 | 37 | |
cf2f90f5 | 38 | static const struct proto_ops l2cap_sock_ops; |
80808e43 GP |
39 | static void l2cap_sock_init(struct sock *sk, struct sock *parent); |
40 | static struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock, int proto, gfp_t prio); | |
cf2f90f5 | 41 | |
af6bcd82 GP |
42 | static int l2cap_sock_bind(struct socket *sock, struct sockaddr *addr, int alen) |
43 | { | |
44 | struct sock *sk = sock->sk; | |
4343478f | 45 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
af6bcd82 GP |
46 | struct sockaddr_l2 la; |
47 | int len, err = 0; | |
48 | ||
49 | BT_DBG("sk %p", sk); | |
50 | ||
51 | if (!addr || addr->sa_family != AF_BLUETOOTH) | |
52 | return -EINVAL; | |
53 | ||
54 | memset(&la, 0, sizeof(la)); | |
55 | len = min_t(unsigned int, sizeof(la), alen); | |
56 | memcpy(&la, addr, len); | |
57 | ||
b62f328b | 58 | if (la.l2_cid && la.l2_psm) |
af6bcd82 GP |
59 | return -EINVAL; |
60 | ||
61 | lock_sock(sk); | |
62 | ||
63 | if (sk->sk_state != BT_OPEN) { | |
64 | err = -EBADFD; | |
65 | goto done; | |
66 | } | |
67 | ||
68 | if (la.l2_psm) { | |
69 | __u16 psm = __le16_to_cpu(la.l2_psm); | |
70 | ||
71 | /* PSM must be odd and lsb of upper byte must be 0 */ | |
72 | if ((psm & 0x0101) != 0x0001) { | |
73 | err = -EINVAL; | |
74 | goto done; | |
75 | } | |
76 | ||
77 | /* Restrict usage of well-known PSMs */ | |
78 | if (psm < 0x1001 && !capable(CAP_NET_BIND_SERVICE)) { | |
79 | err = -EACCES; | |
80 | goto done; | |
81 | } | |
82 | } | |
83 | ||
9e4425ff | 84 | if (la.l2_cid) |
6e4aff10 | 85 | err = l2cap_add_scid(chan, __le16_to_cpu(la.l2_cid)); |
9e4425ff GP |
86 | else |
87 | err = l2cap_add_psm(chan, &la.l2_bdaddr, la.l2_psm); | |
af6bcd82 | 88 | |
9e4425ff GP |
89 | if (err < 0) |
90 | goto done; | |
af6bcd82 | 91 | |
9e4425ff GP |
92 | if (__le16_to_cpu(la.l2_psm) == 0x0001 || |
93 | __le16_to_cpu(la.l2_psm) == 0x0003) | |
94 | chan->sec_level = BT_SECURITY_SDP; | |
b62f328b | 95 | |
9e4425ff | 96 | bacpy(&bt_sk(sk)->src, &la.l2_bdaddr); |
89bc500e GP |
97 | |
98 | chan->state = BT_BOUND; | |
9e4425ff | 99 | sk->sk_state = BT_BOUND; |
af6bcd82 GP |
100 | |
101 | done: | |
102 | release_sock(sk); | |
103 | return err; | |
104 | } | |
105 | ||
4e34c50b GP |
106 | static int l2cap_sock_connect(struct socket *sock, struct sockaddr *addr, int alen, int flags) |
107 | { | |
108 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 109 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
4e34c50b GP |
110 | struct sockaddr_l2 la; |
111 | int len, err = 0; | |
112 | ||
113 | BT_DBG("sk %p", sk); | |
114 | ||
115 | if (!addr || alen < sizeof(addr->sa_family) || | |
116 | addr->sa_family != AF_BLUETOOTH) | |
117 | return -EINVAL; | |
118 | ||
119 | memset(&la, 0, sizeof(la)); | |
120 | len = min_t(unsigned int, sizeof(la), alen); | |
121 | memcpy(&la, addr, len); | |
122 | ||
acd7d370 | 123 | if (la.l2_cid && la.l2_psm) |
4e34c50b GP |
124 | return -EINVAL; |
125 | ||
6e4aff10 | 126 | err = l2cap_chan_connect(chan, la.l2_psm, __le16_to_cpu(la.l2_cid), |
8e9f9892 | 127 | &la.l2_bdaddr, la.l2_bdaddr_type); |
4e34c50b | 128 | if (err) |
b3fb611e | 129 | return err; |
4e34c50b | 130 | |
6be36555 AE |
131 | lock_sock(sk); |
132 | ||
4e34c50b GP |
133 | err = bt_sock_wait_state(sk, BT_CONNECTED, |
134 | sock_sndtimeo(sk, flags & O_NONBLOCK)); | |
b3fb611e AE |
135 | |
136 | release_sock(sk); | |
137 | ||
4e34c50b GP |
138 | return err; |
139 | } | |
140 | ||
af6bcd82 GP |
141 | static int l2cap_sock_listen(struct socket *sock, int backlog) |
142 | { | |
143 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 144 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
af6bcd82 GP |
145 | int err = 0; |
146 | ||
147 | BT_DBG("sk %p backlog %d", sk, backlog); | |
148 | ||
149 | lock_sock(sk); | |
150 | ||
6b3af733 | 151 | if (sk->sk_state != BT_BOUND) { |
af6bcd82 GP |
152 | err = -EBADFD; |
153 | goto done; | |
154 | } | |
155 | ||
6b3af733 MH |
156 | if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM) { |
157 | err = -EINVAL; | |
158 | goto done; | |
159 | } | |
160 | ||
0c1bc5c6 | 161 | switch (chan->mode) { |
af6bcd82 GP |
162 | case L2CAP_MODE_BASIC: |
163 | break; | |
164 | case L2CAP_MODE_ERTM: | |
165 | case L2CAP_MODE_STREAMING: | |
166 | if (!disable_ertm) | |
167 | break; | |
168 | /* fall through */ | |
169 | default: | |
170 | err = -ENOTSUPP; | |
171 | goto done; | |
172 | } | |
173 | ||
af6bcd82 GP |
174 | sk->sk_max_ack_backlog = backlog; |
175 | sk->sk_ack_backlog = 0; | |
89bc500e GP |
176 | |
177 | chan->state = BT_LISTEN; | |
af6bcd82 GP |
178 | sk->sk_state = BT_LISTEN; |
179 | ||
180 | done: | |
181 | release_sock(sk); | |
182 | return err; | |
183 | } | |
184 | ||
c47b7c72 GP |
185 | static int l2cap_sock_accept(struct socket *sock, struct socket *newsock, int flags) |
186 | { | |
187 | DECLARE_WAITQUEUE(wait, current); | |
188 | struct sock *sk = sock->sk, *nsk; | |
189 | long timeo; | |
190 | int err = 0; | |
191 | ||
192 | lock_sock_nested(sk, SINGLE_DEPTH_NESTING); | |
193 | ||
c47b7c72 GP |
194 | timeo = sock_rcvtimeo(sk, flags & O_NONBLOCK); |
195 | ||
196 | BT_DBG("sk %p timeo %ld", sk, timeo); | |
197 | ||
198 | /* Wait for an incoming connection. (wake-one). */ | |
199 | add_wait_queue_exclusive(sk_sleep(sk), &wait); | |
f9a3c20a | 200 | while (1) { |
c47b7c72 | 201 | set_current_state(TASK_INTERRUPTIBLE); |
f9a3c20a PH |
202 | |
203 | if (sk->sk_state != BT_LISTEN) { | |
204 | err = -EBADFD; | |
c47b7c72 GP |
205 | break; |
206 | } | |
207 | ||
f9a3c20a PH |
208 | nsk = bt_accept_dequeue(sk, newsock); |
209 | if (nsk) | |
210 | break; | |
c47b7c72 | 211 | |
f9a3c20a PH |
212 | if (!timeo) { |
213 | err = -EAGAIN; | |
c47b7c72 GP |
214 | break; |
215 | } | |
216 | ||
217 | if (signal_pending(current)) { | |
218 | err = sock_intr_errno(timeo); | |
219 | break; | |
220 | } | |
f9a3c20a PH |
221 | |
222 | release_sock(sk); | |
223 | timeo = schedule_timeout(timeo); | |
224 | lock_sock_nested(sk, SINGLE_DEPTH_NESTING); | |
c47b7c72 | 225 | } |
f9a3c20a | 226 | __set_current_state(TASK_RUNNING); |
c47b7c72 GP |
227 | remove_wait_queue(sk_sleep(sk), &wait); |
228 | ||
229 | if (err) | |
230 | goto done; | |
231 | ||
232 | newsock->state = SS_CONNECTED; | |
233 | ||
234 | BT_DBG("new socket %p", nsk); | |
235 | ||
236 | done: | |
237 | release_sock(sk); | |
238 | return err; | |
239 | } | |
240 | ||
d7175d55 GP |
241 | static int l2cap_sock_getname(struct socket *sock, struct sockaddr *addr, int *len, int peer) |
242 | { | |
243 | struct sockaddr_l2 *la = (struct sockaddr_l2 *) addr; | |
244 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 245 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
d7175d55 GP |
246 | |
247 | BT_DBG("sock %p, sk %p", sock, sk); | |
248 | ||
249 | addr->sa_family = AF_BLUETOOTH; | |
250 | *len = sizeof(struct sockaddr_l2); | |
251 | ||
252 | if (peer) { | |
fe4128e0 | 253 | la->l2_psm = chan->psm; |
d7175d55 | 254 | bacpy(&la->l2_bdaddr, &bt_sk(sk)->dst); |
fe4128e0 | 255 | la->l2_cid = cpu_to_le16(chan->dcid); |
d7175d55 | 256 | } else { |
0c1bc5c6 | 257 | la->l2_psm = chan->sport; |
d7175d55 | 258 | bacpy(&la->l2_bdaddr, &bt_sk(sk)->src); |
fe4128e0 | 259 | la->l2_cid = cpu_to_le16(chan->scid); |
d7175d55 GP |
260 | } |
261 | ||
262 | return 0; | |
263 | } | |
264 | ||
99f4808d GP |
265 | static int l2cap_sock_getsockopt_old(struct socket *sock, int optname, char __user *optval, int __user *optlen) |
266 | { | |
267 | struct sock *sk = sock->sk; | |
4343478f | 268 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
99f4808d GP |
269 | struct l2cap_options opts; |
270 | struct l2cap_conninfo cinfo; | |
271 | int len, err = 0; | |
272 | u32 opt; | |
273 | ||
274 | BT_DBG("sk %p", sk); | |
275 | ||
276 | if (get_user(len, optlen)) | |
277 | return -EFAULT; | |
278 | ||
279 | lock_sock(sk); | |
280 | ||
281 | switch (optname) { | |
282 | case L2CAP_OPTIONS: | |
e3fb592b | 283 | memset(&opts, 0, sizeof(opts)); |
0c1bc5c6 GP |
284 | opts.imtu = chan->imtu; |
285 | opts.omtu = chan->omtu; | |
286 | opts.flush_to = chan->flush_to; | |
287 | opts.mode = chan->mode; | |
47d1ec61 GP |
288 | opts.fcs = chan->fcs; |
289 | opts.max_tx = chan->max_tx; | |
6327eb98 | 290 | opts.txwin_size = chan->tx_win; |
99f4808d GP |
291 | |
292 | len = min_t(unsigned int, len, sizeof(opts)); | |
293 | if (copy_to_user(optval, (char *) &opts, len)) | |
294 | err = -EFAULT; | |
295 | ||
296 | break; | |
297 | ||
298 | case L2CAP_LM: | |
4343478f | 299 | switch (chan->sec_level) { |
99f4808d GP |
300 | case BT_SECURITY_LOW: |
301 | opt = L2CAP_LM_AUTH; | |
302 | break; | |
303 | case BT_SECURITY_MEDIUM: | |
304 | opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT; | |
305 | break; | |
306 | case BT_SECURITY_HIGH: | |
307 | opt = L2CAP_LM_AUTH | L2CAP_LM_ENCRYPT | | |
308 | L2CAP_LM_SECURE; | |
309 | break; | |
310 | default: | |
311 | opt = 0; | |
312 | break; | |
313 | } | |
314 | ||
43bd0f32 | 315 | if (test_bit(FLAG_ROLE_SWITCH, &chan->flags)) |
99f4808d GP |
316 | opt |= L2CAP_LM_MASTER; |
317 | ||
ecf61bdb | 318 | if (test_bit(FLAG_FORCE_RELIABLE, &chan->flags)) |
99f4808d GP |
319 | opt |= L2CAP_LM_RELIABLE; |
320 | ||
321 | if (put_user(opt, (u32 __user *) optval)) | |
322 | err = -EFAULT; | |
323 | break; | |
324 | ||
325 | case L2CAP_CONNINFO: | |
326 | if (sk->sk_state != BT_CONNECTED && | |
327 | !(sk->sk_state == BT_CONNECT2 && | |
328 | bt_sk(sk)->defer_setup)) { | |
329 | err = -ENOTCONN; | |
330 | break; | |
331 | } | |
332 | ||
8d03e971 | 333 | memset(&cinfo, 0, sizeof(cinfo)); |
8c1d787b GP |
334 | cinfo.hci_handle = chan->conn->hcon->handle; |
335 | memcpy(cinfo.dev_class, chan->conn->hcon->dev_class, 3); | |
99f4808d GP |
336 | |
337 | len = min_t(unsigned int, len, sizeof(cinfo)); | |
338 | if (copy_to_user(optval, (char *) &cinfo, len)) | |
339 | err = -EFAULT; | |
340 | ||
341 | break; | |
342 | ||
343 | default: | |
344 | err = -ENOPROTOOPT; | |
345 | break; | |
346 | } | |
347 | ||
348 | release_sock(sk); | |
349 | return err; | |
350 | } | |
351 | ||
352 | static int l2cap_sock_getsockopt(struct socket *sock, int level, int optname, char __user *optval, int __user *optlen) | |
353 | { | |
354 | struct sock *sk = sock->sk; | |
4343478f | 355 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
99f4808d | 356 | struct bt_security sec; |
14b12d0b | 357 | struct bt_power pwr; |
99f4808d GP |
358 | int len, err = 0; |
359 | ||
360 | BT_DBG("sk %p", sk); | |
361 | ||
362 | if (level == SOL_L2CAP) | |
363 | return l2cap_sock_getsockopt_old(sock, optname, optval, optlen); | |
364 | ||
365 | if (level != SOL_BLUETOOTH) | |
366 | return -ENOPROTOOPT; | |
367 | ||
368 | if (get_user(len, optlen)) | |
369 | return -EFAULT; | |
370 | ||
371 | lock_sock(sk); | |
372 | ||
373 | switch (optname) { | |
374 | case BT_SECURITY: | |
715ec005 GP |
375 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && |
376 | chan->chan_type != L2CAP_CHAN_RAW) { | |
99f4808d GP |
377 | err = -EINVAL; |
378 | break; | |
379 | } | |
380 | ||
8f360119 | 381 | memset(&sec, 0, sizeof(sec)); |
4343478f | 382 | sec.level = chan->sec_level; |
99f4808d | 383 | |
8f360119 VCG |
384 | if (sk->sk_state == BT_CONNECTED) |
385 | sec.key_size = chan->conn->hcon->enc_key_size; | |
386 | ||
99f4808d GP |
387 | len = min_t(unsigned int, len, sizeof(sec)); |
388 | if (copy_to_user(optval, (char *) &sec, len)) | |
389 | err = -EFAULT; | |
390 | ||
391 | break; | |
392 | ||
393 | case BT_DEFER_SETUP: | |
394 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
395 | err = -EINVAL; | |
396 | break; | |
397 | } | |
398 | ||
399 | if (put_user(bt_sk(sk)->defer_setup, (u32 __user *) optval)) | |
400 | err = -EFAULT; | |
401 | ||
402 | break; | |
403 | ||
404 | case BT_FLUSHABLE: | |
d57b0e8b AE |
405 | if (put_user(test_bit(FLAG_FLUSHABLE, &chan->flags), |
406 | (u32 __user *) optval)) | |
99f4808d GP |
407 | err = -EFAULT; |
408 | ||
409 | break; | |
410 | ||
14b12d0b JG |
411 | case BT_POWER: |
412 | if (sk->sk_type != SOCK_SEQPACKET && sk->sk_type != SOCK_STREAM | |
413 | && sk->sk_type != SOCK_RAW) { | |
414 | err = -EINVAL; | |
415 | break; | |
416 | } | |
417 | ||
15770b1a | 418 | pwr.force_active = test_bit(FLAG_FORCE_ACTIVE, &chan->flags); |
14b12d0b JG |
419 | |
420 | len = min_t(unsigned int, len, sizeof(pwr)); | |
421 | if (copy_to_user(optval, (char *) &pwr, len)) | |
422 | err = -EFAULT; | |
423 | ||
424 | break; | |
425 | ||
2ea66482 MM |
426 | case BT_CHANNEL_POLICY: |
427 | if (!enable_hs) { | |
428 | err = -ENOPROTOOPT; | |
429 | break; | |
430 | } | |
431 | ||
432 | if (put_user(chan->chan_policy, (u32 __user *) optval)) | |
433 | err = -EFAULT; | |
434 | break; | |
435 | ||
99f4808d GP |
436 | default: |
437 | err = -ENOPROTOOPT; | |
438 | break; | |
439 | } | |
440 | ||
441 | release_sock(sk); | |
442 | return err; | |
443 | } | |
444 | ||
33575df7 GP |
445 | static int l2cap_sock_setsockopt_old(struct socket *sock, int optname, char __user *optval, unsigned int optlen) |
446 | { | |
447 | struct sock *sk = sock->sk; | |
b4450035 | 448 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
33575df7 GP |
449 | struct l2cap_options opts; |
450 | int len, err = 0; | |
451 | u32 opt; | |
452 | ||
453 | BT_DBG("sk %p", sk); | |
454 | ||
455 | lock_sock(sk); | |
456 | ||
457 | switch (optname) { | |
458 | case L2CAP_OPTIONS: | |
459 | if (sk->sk_state == BT_CONNECTED) { | |
460 | err = -EINVAL; | |
461 | break; | |
462 | } | |
463 | ||
0c1bc5c6 GP |
464 | opts.imtu = chan->imtu; |
465 | opts.omtu = chan->omtu; | |
466 | opts.flush_to = chan->flush_to; | |
467 | opts.mode = chan->mode; | |
47d1ec61 GP |
468 | opts.fcs = chan->fcs; |
469 | opts.max_tx = chan->max_tx; | |
6327eb98 | 470 | opts.txwin_size = chan->tx_win; |
33575df7 GP |
471 | |
472 | len = min_t(unsigned int, sizeof(opts), optlen); | |
473 | if (copy_from_user((char *) &opts, optval, len)) { | |
474 | err = -EFAULT; | |
475 | break; | |
476 | } | |
477 | ||
6327eb98 | 478 | if (opts.txwin_size > L2CAP_DEFAULT_EXT_WINDOW) { |
33575df7 GP |
479 | err = -EINVAL; |
480 | break; | |
481 | } | |
482 | ||
0c1bc5c6 GP |
483 | chan->mode = opts.mode; |
484 | switch (chan->mode) { | |
33575df7 | 485 | case L2CAP_MODE_BASIC: |
c1360a1c | 486 | clear_bit(CONF_STATE2_DEVICE, &chan->conf_state); |
33575df7 GP |
487 | break; |
488 | case L2CAP_MODE_ERTM: | |
489 | case L2CAP_MODE_STREAMING: | |
490 | if (!disable_ertm) | |
491 | break; | |
492 | /* fall through */ | |
493 | default: | |
494 | err = -EINVAL; | |
495 | break; | |
496 | } | |
497 | ||
0c1bc5c6 GP |
498 | chan->imtu = opts.imtu; |
499 | chan->omtu = opts.omtu; | |
47d1ec61 GP |
500 | chan->fcs = opts.fcs; |
501 | chan->max_tx = opts.max_tx; | |
6327eb98 | 502 | chan->tx_win = opts.txwin_size; |
33575df7 GP |
503 | break; |
504 | ||
505 | case L2CAP_LM: | |
506 | if (get_user(opt, (u32 __user *) optval)) { | |
507 | err = -EFAULT; | |
508 | break; | |
509 | } | |
510 | ||
511 | if (opt & L2CAP_LM_AUTH) | |
4343478f | 512 | chan->sec_level = BT_SECURITY_LOW; |
33575df7 | 513 | if (opt & L2CAP_LM_ENCRYPT) |
4343478f | 514 | chan->sec_level = BT_SECURITY_MEDIUM; |
33575df7 | 515 | if (opt & L2CAP_LM_SECURE) |
4343478f | 516 | chan->sec_level = BT_SECURITY_HIGH; |
33575df7 | 517 | |
43bd0f32 AE |
518 | if (opt & L2CAP_LM_MASTER) |
519 | set_bit(FLAG_ROLE_SWITCH, &chan->flags); | |
520 | else | |
521 | clear_bit(FLAG_ROLE_SWITCH, &chan->flags); | |
ecf61bdb AE |
522 | |
523 | if (opt & L2CAP_LM_RELIABLE) | |
524 | set_bit(FLAG_FORCE_RELIABLE, &chan->flags); | |
525 | else | |
526 | clear_bit(FLAG_FORCE_RELIABLE, &chan->flags); | |
33575df7 GP |
527 | break; |
528 | ||
529 | default: | |
530 | err = -ENOPROTOOPT; | |
531 | break; | |
532 | } | |
533 | ||
534 | release_sock(sk); | |
535 | return err; | |
536 | } | |
537 | ||
538 | static int l2cap_sock_setsockopt(struct socket *sock, int level, int optname, char __user *optval, unsigned int optlen) | |
539 | { | |
540 | struct sock *sk = sock->sk; | |
4343478f | 541 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
33575df7 | 542 | struct bt_security sec; |
14b12d0b | 543 | struct bt_power pwr; |
f1cb9af5 | 544 | struct l2cap_conn *conn; |
33575df7 GP |
545 | int len, err = 0; |
546 | u32 opt; | |
547 | ||
548 | BT_DBG("sk %p", sk); | |
549 | ||
550 | if (level == SOL_L2CAP) | |
551 | return l2cap_sock_setsockopt_old(sock, optname, optval, optlen); | |
552 | ||
553 | if (level != SOL_BLUETOOTH) | |
554 | return -ENOPROTOOPT; | |
555 | ||
556 | lock_sock(sk); | |
557 | ||
558 | switch (optname) { | |
559 | case BT_SECURITY: | |
715ec005 GP |
560 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && |
561 | chan->chan_type != L2CAP_CHAN_RAW) { | |
33575df7 GP |
562 | err = -EINVAL; |
563 | break; | |
564 | } | |
565 | ||
566 | sec.level = BT_SECURITY_LOW; | |
567 | ||
568 | len = min_t(unsigned int, sizeof(sec), optlen); | |
569 | if (copy_from_user((char *) &sec, optval, len)) { | |
570 | err = -EFAULT; | |
571 | break; | |
572 | } | |
573 | ||
574 | if (sec.level < BT_SECURITY_LOW || | |
575 | sec.level > BT_SECURITY_HIGH) { | |
576 | err = -EINVAL; | |
577 | break; | |
578 | } | |
579 | ||
4343478f | 580 | chan->sec_level = sec.level; |
f1cb9af5 | 581 | |
0bee1d60 GP |
582 | if (!chan->conn) |
583 | break; | |
584 | ||
f1cb9af5 | 585 | conn = chan->conn; |
0bee1d60 GP |
586 | |
587 | /*change security for LE channels */ | |
588 | if (chan->scid == L2CAP_CID_LE_DATA) { | |
f1cb9af5 VCG |
589 | if (!conn->hcon->out) { |
590 | err = -EINVAL; | |
591 | break; | |
592 | } | |
593 | ||
594 | if (smp_conn_security(conn, sec.level)) | |
595 | break; | |
f1cb9af5 | 596 | sk->sk_state = BT_CONFIG; |
3542b854 | 597 | chan->state = BT_CONFIG; |
0bee1d60 | 598 | |
a7d7723a GP |
599 | /* or for ACL link */ |
600 | } else if ((sk->sk_state == BT_CONNECT2 && | |
601 | bt_sk(sk)->defer_setup) || | |
602 | sk->sk_state == BT_CONNECTED) { | |
603 | if (!l2cap_chan_check_security(chan)) | |
604 | bt_sk(sk)->suspended = true; | |
605 | else | |
606 | sk->sk_state_change(sk); | |
0bee1d60 GP |
607 | } else { |
608 | err = -EINVAL; | |
f1cb9af5 | 609 | } |
33575df7 GP |
610 | break; |
611 | ||
612 | case BT_DEFER_SETUP: | |
613 | if (sk->sk_state != BT_BOUND && sk->sk_state != BT_LISTEN) { | |
614 | err = -EINVAL; | |
615 | break; | |
616 | } | |
617 | ||
618 | if (get_user(opt, (u32 __user *) optval)) { | |
619 | err = -EFAULT; | |
620 | break; | |
621 | } | |
622 | ||
623 | bt_sk(sk)->defer_setup = opt; | |
624 | break; | |
625 | ||
626 | case BT_FLUSHABLE: | |
627 | if (get_user(opt, (u32 __user *) optval)) { | |
628 | err = -EFAULT; | |
629 | break; | |
630 | } | |
631 | ||
632 | if (opt > BT_FLUSHABLE_ON) { | |
633 | err = -EINVAL; | |
634 | break; | |
635 | } | |
636 | ||
637 | if (opt == BT_FLUSHABLE_OFF) { | |
8c1d787b | 638 | struct l2cap_conn *conn = chan->conn; |
25985edc | 639 | /* proceed further only when we have l2cap_conn and |
33575df7 GP |
640 | No Flush support in the LM */ |
641 | if (!conn || !lmp_no_flush_capable(conn->hcon->hdev)) { | |
642 | err = -EINVAL; | |
643 | break; | |
644 | } | |
645 | } | |
646 | ||
d57b0e8b AE |
647 | if (opt) |
648 | set_bit(FLAG_FLUSHABLE, &chan->flags); | |
649 | else | |
650 | clear_bit(FLAG_FLUSHABLE, &chan->flags); | |
33575df7 GP |
651 | break; |
652 | ||
14b12d0b JG |
653 | case BT_POWER: |
654 | if (chan->chan_type != L2CAP_CHAN_CONN_ORIENTED && | |
655 | chan->chan_type != L2CAP_CHAN_RAW) { | |
656 | err = -EINVAL; | |
657 | break; | |
658 | } | |
659 | ||
660 | pwr.force_active = BT_POWER_FORCE_ACTIVE_ON; | |
661 | ||
662 | len = min_t(unsigned int, sizeof(pwr), optlen); | |
663 | if (copy_from_user((char *) &pwr, optval, len)) { | |
664 | err = -EFAULT; | |
665 | break; | |
666 | } | |
15770b1a AE |
667 | |
668 | if (pwr.force_active) | |
669 | set_bit(FLAG_FORCE_ACTIVE, &chan->flags); | |
670 | else | |
671 | clear_bit(FLAG_FORCE_ACTIVE, &chan->flags); | |
14b12d0b JG |
672 | break; |
673 | ||
2ea66482 MM |
674 | case BT_CHANNEL_POLICY: |
675 | if (!enable_hs) { | |
676 | err = -ENOPROTOOPT; | |
677 | break; | |
678 | } | |
679 | ||
680 | if (get_user(opt, (u32 __user *) optval)) { | |
681 | err = -EFAULT; | |
682 | break; | |
683 | } | |
684 | ||
685 | if (opt > BT_CHANNEL_POLICY_AMP_PREFERRED) { | |
686 | err = -EINVAL; | |
687 | break; | |
688 | } | |
689 | ||
690 | if (chan->mode != L2CAP_MODE_ERTM && | |
691 | chan->mode != L2CAP_MODE_STREAMING) { | |
692 | err = -EOPNOTSUPP; | |
693 | break; | |
694 | } | |
695 | ||
696 | chan->chan_policy = (u8) opt; | |
14b12d0b JG |
697 | break; |
698 | ||
33575df7 GP |
699 | default: |
700 | err = -ENOPROTOOPT; | |
701 | break; | |
702 | } | |
703 | ||
704 | release_sock(sk); | |
705 | return err; | |
706 | } | |
fd83ccdb GP |
707 | |
708 | static int l2cap_sock_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t len) | |
709 | { | |
710 | struct sock *sk = sock->sk; | |
0c1bc5c6 | 711 | struct l2cap_chan *chan = l2cap_pi(sk)->chan; |
fd83ccdb GP |
712 | int err; |
713 | ||
714 | BT_DBG("sock %p, sk %p", sock, sk); | |
715 | ||
716 | err = sock_error(sk); | |
717 | if (err) | |
718 | return err; | |
719 | ||
720 | if (msg->msg_flags & MSG_OOB) | |
721 | return -EOPNOTSUPP; | |
722 | ||
a6a5568c | 723 | if (sk->sk_state != BT_CONNECTED) |
9a91a04a | 724 | return -ENOTCONN; |
fd83ccdb | 725 | |
a6a5568c | 726 | l2cap_chan_lock(chan); |
5e59b791 | 727 | err = l2cap_chan_send(chan, msg, len, sk->sk_priority); |
a6a5568c | 728 | l2cap_chan_unlock(chan); |
fd83ccdb | 729 | |
fd83ccdb GP |
730 | return err; |
731 | } | |
33575df7 | 732 | |
68983259 GP |
733 | static int l2cap_sock_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t len, int flags) |
734 | { | |
735 | struct sock *sk = sock->sk; | |
e328140f MM |
736 | struct l2cap_pinfo *pi = l2cap_pi(sk); |
737 | int err; | |
68983259 GP |
738 | |
739 | lock_sock(sk); | |
740 | ||
741 | if (sk->sk_state == BT_CONNECT2 && bt_sk(sk)->defer_setup) { | |
8c1d787b | 742 | sk->sk_state = BT_CONFIG; |
3542b854 | 743 | pi->chan->state = BT_CONFIG; |
8c1d787b | 744 | |
e328140f | 745 | __l2cap_connect_rsp_defer(pi->chan); |
68983259 GP |
746 | release_sock(sk); |
747 | return 0; | |
748 | } | |
749 | ||
750 | release_sock(sk); | |
751 | ||
752 | if (sock->type == SOCK_STREAM) | |
e328140f MM |
753 | err = bt_sock_stream_recvmsg(iocb, sock, msg, len, flags); |
754 | else | |
755 | err = bt_sock_recvmsg(iocb, sock, msg, len, flags); | |
756 | ||
757 | if (pi->chan->mode != L2CAP_MODE_ERTM) | |
758 | return err; | |
759 | ||
760 | /* Attempt to put pending rx data in the socket buffer */ | |
761 | ||
762 | lock_sock(sk); | |
763 | ||
764 | if (!test_bit(CONN_LOCAL_BUSY, &pi->chan->conn_state)) | |
765 | goto done; | |
766 | ||
767 | if (pi->rx_busy_skb) { | |
768 | if (!sock_queue_rcv_skb(sk, pi->rx_busy_skb)) | |
769 | pi->rx_busy_skb = NULL; | |
770 | else | |
771 | goto done; | |
772 | } | |
773 | ||
774 | /* Restore data flow when half of the receive buffer is | |
775 | * available. This avoids resending large numbers of | |
776 | * frames. | |
777 | */ | |
778 | if (atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf >> 1) | |
779 | l2cap_chan_busy(pi->chan, 0); | |
68983259 | 780 | |
e328140f MM |
781 | done: |
782 | release_sock(sk); | |
783 | return err; | |
68983259 GP |
784 | } |
785 | ||
05fc1576 GP |
786 | /* Kill socket (only if zapped and orphan) |
787 | * Must be called on unlocked socket. | |
788 | */ | |
ba3bd0ee | 789 | static void l2cap_sock_kill(struct sock *sk) |
05fc1576 GP |
790 | { |
791 | if (!sock_flag(sk, SOCK_ZAPPED) || sk->sk_socket) | |
792 | return; | |
793 | ||
e05dcc32 | 794 | BT_DBG("sk %p state %s", sk, state_to_string(sk->sk_state)); |
05fc1576 GP |
795 | |
796 | /* Kill poor orphan */ | |
6ff5abbf | 797 | |
23691d75 | 798 | l2cap_chan_destroy(l2cap_pi(sk)->chan); |
05fc1576 GP |
799 | sock_set_flag(sk, SOCK_DEAD); |
800 | sock_put(sk); | |
801 | } | |
802 | ||
dcba0dba GP |
803 | static int l2cap_sock_shutdown(struct socket *sock, int how) |
804 | { | |
805 | struct sock *sk = sock->sk; | |
7ddb6e0f | 806 | struct l2cap_chan *chan; |
3df91ea2 | 807 | struct l2cap_conn *conn; |
dcba0dba GP |
808 | int err = 0; |
809 | ||
810 | BT_DBG("sock %p, sk %p", sock, sk); | |
811 | ||
812 | if (!sk) | |
813 | return 0; | |
814 | ||
7ddb6e0f | 815 | chan = l2cap_pi(sk)->chan; |
3df91ea2 AE |
816 | conn = chan->conn; |
817 | ||
818 | if (conn) | |
819 | mutex_lock(&conn->chan_lock); | |
7ddb6e0f | 820 | |
6be36555 | 821 | l2cap_chan_lock(chan); |
dcba0dba | 822 | lock_sock(sk); |
6be36555 | 823 | |
dcba0dba | 824 | if (!sk->sk_shutdown) { |
0c1bc5c6 | 825 | if (chan->mode == L2CAP_MODE_ERTM) |
dcba0dba GP |
826 | err = __l2cap_wait_ack(sk); |
827 | ||
828 | sk->sk_shutdown = SHUTDOWN_MASK; | |
3df91ea2 | 829 | |
6be36555 | 830 | release_sock(sk); |
0f852724 | 831 | l2cap_chan_close(chan, 0); |
6be36555 | 832 | lock_sock(sk); |
dcba0dba GP |
833 | |
834 | if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime) | |
835 | err = bt_sock_wait_state(sk, BT_CLOSED, | |
836 | sk->sk_lingertime); | |
837 | } | |
838 | ||
839 | if (!err && sk->sk_err) | |
840 | err = -sk->sk_err; | |
841 | ||
842 | release_sock(sk); | |
6be36555 | 843 | l2cap_chan_unlock(chan); |
3df91ea2 AE |
844 | |
845 | if (conn) | |
846 | mutex_unlock(&conn->chan_lock); | |
847 | ||
dcba0dba GP |
848 | return err; |
849 | } | |
850 | ||
554f05bb GP |
851 | static int l2cap_sock_release(struct socket *sock) |
852 | { | |
853 | struct sock *sk = sock->sk; | |
854 | int err; | |
855 | ||
856 | BT_DBG("sock %p, sk %p", sock, sk); | |
857 | ||
858 | if (!sk) | |
859 | return 0; | |
860 | ||
861 | err = l2cap_sock_shutdown(sock, 2); | |
862 | ||
863 | sock_orphan(sk); | |
864 | l2cap_sock_kill(sk); | |
865 | return err; | |
866 | } | |
867 | ||
80808e43 GP |
868 | static struct l2cap_chan *l2cap_sock_new_connection_cb(void *data) |
869 | { | |
870 | struct sock *sk, *parent = data; | |
871 | ||
872 | sk = l2cap_sock_alloc(sock_net(parent), NULL, BTPROTO_L2CAP, | |
873 | GFP_ATOMIC); | |
874 | if (!sk) | |
875 | return NULL; | |
876 | ||
d22015aa OP |
877 | bt_sock_reclassify_lock(sk, BTPROTO_L2CAP); |
878 | ||
80808e43 GP |
879 | l2cap_sock_init(sk, parent); |
880 | ||
881 | return l2cap_pi(sk)->chan; | |
882 | } | |
883 | ||
23070494 GP |
884 | static int l2cap_sock_recv_cb(void *data, struct sk_buff *skb) |
885 | { | |
e328140f | 886 | int err; |
23070494 | 887 | struct sock *sk = data; |
e328140f MM |
888 | struct l2cap_pinfo *pi = l2cap_pi(sk); |
889 | ||
6be36555 AE |
890 | lock_sock(sk); |
891 | ||
892 | if (pi->rx_busy_skb) { | |
893 | err = -ENOMEM; | |
894 | goto done; | |
895 | } | |
e328140f MM |
896 | |
897 | err = sock_queue_rcv_skb(sk, skb); | |
898 | ||
899 | /* For ERTM, handle one skb that doesn't fit into the recv | |
900 | * buffer. This is important to do because the data frames | |
901 | * have already been acked, so the skb cannot be discarded. | |
902 | * | |
903 | * Notify the l2cap core that the buffer is full, so the | |
904 | * LOCAL_BUSY state is entered and no more frames are | |
905 | * acked and reassembled until there is buffer space | |
906 | * available. | |
907 | */ | |
908 | if (err < 0 && pi->chan->mode == L2CAP_MODE_ERTM) { | |
909 | pi->rx_busy_skb = skb; | |
910 | l2cap_chan_busy(pi->chan, 1); | |
911 | err = 0; | |
912 | } | |
23070494 | 913 | |
6be36555 AE |
914 | done: |
915 | release_sock(sk); | |
916 | ||
e328140f | 917 | return err; |
23070494 GP |
918 | } |
919 | ||
ba3bd0ee GP |
920 | static void l2cap_sock_close_cb(void *data) |
921 | { | |
922 | struct sock *sk = data; | |
923 | ||
924 | l2cap_sock_kill(sk); | |
925 | } | |
926 | ||
89bc500e GP |
927 | static void l2cap_sock_state_change_cb(void *data, int state) |
928 | { | |
929 | struct sock *sk = data; | |
930 | ||
931 | sk->sk_state = state; | |
932 | } | |
933 | ||
2f7719ce | 934 | static struct sk_buff *l2cap_sock_alloc_skb_cb(struct l2cap_chan *chan, |
90338947 | 935 | unsigned long len, int nb) |
2f7719ce | 936 | { |
90338947 GP |
937 | struct sk_buff *skb; |
938 | int err; | |
939 | ||
a6a5568c | 940 | l2cap_chan_unlock(chan); |
90338947 | 941 | skb = bt_skb_send_alloc(chan->sk, len, nb, &err); |
a6a5568c MM |
942 | l2cap_chan_lock(chan); |
943 | ||
90338947 GP |
944 | if (!skb) |
945 | return ERR_PTR(err); | |
2f7719ce | 946 | |
90338947 | 947 | return skb; |
2f7719ce AE |
948 | } |
949 | ||
80808e43 GP |
950 | static struct l2cap_ops l2cap_chan_ops = { |
951 | .name = "L2CAP Socket Interface", | |
952 | .new_connection = l2cap_sock_new_connection_cb, | |
23070494 | 953 | .recv = l2cap_sock_recv_cb, |
ba3bd0ee | 954 | .close = l2cap_sock_close_cb, |
89bc500e | 955 | .state_change = l2cap_sock_state_change_cb, |
2f7719ce | 956 | .alloc_skb = l2cap_sock_alloc_skb_cb, |
80808e43 GP |
957 | }; |
958 | ||
bb58f747 GP |
959 | static void l2cap_sock_destruct(struct sock *sk) |
960 | { | |
961 | BT_DBG("sk %p", sk); | |
962 | ||
61d6ef3e | 963 | l2cap_chan_put(l2cap_pi(sk)->chan); |
e328140f MM |
964 | if (l2cap_pi(sk)->rx_busy_skb) { |
965 | kfree_skb(l2cap_pi(sk)->rx_busy_skb); | |
966 | l2cap_pi(sk)->rx_busy_skb = NULL; | |
967 | } | |
968 | ||
bb58f747 GP |
969 | skb_queue_purge(&sk->sk_receive_queue); |
970 | skb_queue_purge(&sk->sk_write_queue); | |
971 | } | |
972 | ||
80808e43 | 973 | static void l2cap_sock_init(struct sock *sk, struct sock *parent) |
bb58f747 GP |
974 | { |
975 | struct l2cap_pinfo *pi = l2cap_pi(sk); | |
b4450035 | 976 | struct l2cap_chan *chan = pi->chan; |
bb58f747 GP |
977 | |
978 | BT_DBG("sk %p", sk); | |
979 | ||
980 | if (parent) { | |
b4450035 GP |
981 | struct l2cap_chan *pchan = l2cap_pi(parent)->chan; |
982 | ||
bb58f747 GP |
983 | sk->sk_type = parent->sk_type; |
984 | bt_sk(sk)->defer_setup = bt_sk(parent)->defer_setup; | |
985 | ||
715ec005 | 986 | chan->chan_type = pchan->chan_type; |
0c1bc5c6 GP |
987 | chan->imtu = pchan->imtu; |
988 | chan->omtu = pchan->omtu; | |
b4450035 | 989 | chan->conf_state = pchan->conf_state; |
0c1bc5c6 | 990 | chan->mode = pchan->mode; |
47d1ec61 GP |
991 | chan->fcs = pchan->fcs; |
992 | chan->max_tx = pchan->max_tx; | |
993 | chan->tx_win = pchan->tx_win; | |
6b3c7104 | 994 | chan->tx_win_max = pchan->tx_win_max; |
4343478f | 995 | chan->sec_level = pchan->sec_level; |
d57b0e8b | 996 | chan->flags = pchan->flags; |
6230c9b4 PM |
997 | |
998 | security_sk_clone(parent, sk); | |
bb58f747 | 999 | } else { |
715ec005 GP |
1000 | |
1001 | switch (sk->sk_type) { | |
1002 | case SOCK_RAW: | |
1003 | chan->chan_type = L2CAP_CHAN_RAW; | |
1004 | break; | |
1005 | case SOCK_DGRAM: | |
1006 | chan->chan_type = L2CAP_CHAN_CONN_LESS; | |
1007 | break; | |
1008 | case SOCK_SEQPACKET: | |
1009 | case SOCK_STREAM: | |
1010 | chan->chan_type = L2CAP_CHAN_CONN_ORIENTED; | |
1011 | break; | |
1012 | } | |
1013 | ||
0c1bc5c6 GP |
1014 | chan->imtu = L2CAP_DEFAULT_MTU; |
1015 | chan->omtu = 0; | |
bb58f747 | 1016 | if (!disable_ertm && sk->sk_type == SOCK_STREAM) { |
0c1bc5c6 | 1017 | chan->mode = L2CAP_MODE_ERTM; |
c1360a1c | 1018 | set_bit(CONF_STATE2_DEVICE, &chan->conf_state); |
bb58f747 | 1019 | } else { |
0c1bc5c6 | 1020 | chan->mode = L2CAP_MODE_BASIC; |
bb58f747 | 1021 | } |
bd4b1653 AE |
1022 | |
1023 | l2cap_chan_set_defaults(chan); | |
bb58f747 GP |
1024 | } |
1025 | ||
1026 | /* Default config options */ | |
0c1bc5c6 | 1027 | chan->flush_to = L2CAP_DEFAULT_FLUSH_TO; |
80808e43 GP |
1028 | |
1029 | chan->data = sk; | |
1030 | chan->ops = &l2cap_chan_ops; | |
bb58f747 GP |
1031 | } |
1032 | ||
1033 | static struct proto l2cap_proto = { | |
1034 | .name = "L2CAP", | |
1035 | .owner = THIS_MODULE, | |
1036 | .obj_size = sizeof(struct l2cap_pinfo) | |
1037 | }; | |
1038 | ||
80808e43 | 1039 | static struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock, int proto, gfp_t prio) |
bb58f747 GP |
1040 | { |
1041 | struct sock *sk; | |
dc50a06d | 1042 | struct l2cap_chan *chan; |
bb58f747 GP |
1043 | |
1044 | sk = sk_alloc(net, PF_BLUETOOTH, prio, &l2cap_proto); | |
1045 | if (!sk) | |
1046 | return NULL; | |
1047 | ||
1048 | sock_init_data(sock, sk); | |
1049 | INIT_LIST_HEAD(&bt_sk(sk)->accept_q); | |
1050 | ||
1051 | sk->sk_destruct = l2cap_sock_destruct; | |
ba13ccd9 | 1052 | sk->sk_sndtimeo = L2CAP_CONN_TIMEOUT; |
bb58f747 GP |
1053 | |
1054 | sock_reset_flag(sk, SOCK_ZAPPED); | |
1055 | ||
1056 | sk->sk_protocol = proto; | |
1057 | sk->sk_state = BT_OPEN; | |
1058 | ||
eef1d9b6 | 1059 | chan = l2cap_chan_create(); |
dc50a06d GP |
1060 | if (!chan) { |
1061 | l2cap_sock_kill(sk); | |
1062 | return NULL; | |
1063 | } | |
1064 | ||
61d6ef3e MM |
1065 | l2cap_chan_hold(chan); |
1066 | ||
eef1d9b6 GP |
1067 | chan->sk = sk; |
1068 | ||
dc50a06d GP |
1069 | l2cap_pi(sk)->chan = chan; |
1070 | ||
bb58f747 GP |
1071 | return sk; |
1072 | } | |
1073 | ||
1074 | static int l2cap_sock_create(struct net *net, struct socket *sock, int protocol, | |
1075 | int kern) | |
1076 | { | |
1077 | struct sock *sk; | |
1078 | ||
1079 | BT_DBG("sock %p", sock); | |
1080 | ||
1081 | sock->state = SS_UNCONNECTED; | |
1082 | ||
1083 | if (sock->type != SOCK_SEQPACKET && sock->type != SOCK_STREAM && | |
1084 | sock->type != SOCK_DGRAM && sock->type != SOCK_RAW) | |
1085 | return -ESOCKTNOSUPPORT; | |
1086 | ||
1087 | if (sock->type == SOCK_RAW && !kern && !capable(CAP_NET_RAW)) | |
1088 | return -EPERM; | |
1089 | ||
1090 | sock->ops = &l2cap_sock_ops; | |
1091 | ||
1092 | sk = l2cap_sock_alloc(net, sock, protocol, GFP_ATOMIC); | |
1093 | if (!sk) | |
1094 | return -ENOMEM; | |
1095 | ||
1096 | l2cap_sock_init(sk, NULL); | |
1097 | return 0; | |
1098 | } | |
1099 | ||
cf2f90f5 | 1100 | static const struct proto_ops l2cap_sock_ops = { |
65390587 GP |
1101 | .family = PF_BLUETOOTH, |
1102 | .owner = THIS_MODULE, | |
1103 | .release = l2cap_sock_release, | |
1104 | .bind = l2cap_sock_bind, | |
1105 | .connect = l2cap_sock_connect, | |
1106 | .listen = l2cap_sock_listen, | |
1107 | .accept = l2cap_sock_accept, | |
1108 | .getname = l2cap_sock_getname, | |
1109 | .sendmsg = l2cap_sock_sendmsg, | |
1110 | .recvmsg = l2cap_sock_recvmsg, | |
1111 | .poll = bt_sock_poll, | |
1112 | .ioctl = bt_sock_ioctl, | |
1113 | .mmap = sock_no_mmap, | |
1114 | .socketpair = sock_no_socketpair, | |
1115 | .shutdown = l2cap_sock_shutdown, | |
1116 | .setsockopt = l2cap_sock_setsockopt, | |
1117 | .getsockopt = l2cap_sock_getsockopt | |
1118 | }; | |
1119 | ||
bb58f747 GP |
1120 | static const struct net_proto_family l2cap_sock_family_ops = { |
1121 | .family = PF_BLUETOOTH, | |
1122 | .owner = THIS_MODULE, | |
1123 | .create = l2cap_sock_create, | |
1124 | }; | |
1125 | ||
1126 | int __init l2cap_init_sockets(void) | |
1127 | { | |
e2174ca4 | 1128 | int err; |
bb58f747 | 1129 | |
e2174ca4 GP |
1130 | err = proto_register(&l2cap_proto, 0); |
1131 | if (err < 0) | |
1132 | return err; | |
bb58f747 | 1133 | |
e2174ca4 GP |
1134 | err = bt_sock_register(BTPROTO_L2CAP, &l2cap_sock_family_ops); |
1135 | if (err < 0) | |
1136 | goto error; | |
bb58f747 | 1137 | |
e2174ca4 | 1138 | BT_INFO("L2CAP socket layer initialized"); |
bb58f747 | 1139 | |
e2174ca4 | 1140 | return 0; |
bb58f747 GP |
1141 | |
1142 | error: | |
e2174ca4 GP |
1143 | BT_ERR("L2CAP socket registration failed"); |
1144 | proto_unregister(&l2cap_proto); | |
1145 | return err; | |
bb58f747 GP |
1146 | } |
1147 | ||
1148 | void l2cap_cleanup_sockets(void) | |
1149 | { | |
e2174ca4 GP |
1150 | if (bt_sock_unregister(BTPROTO_L2CAP) < 0) |
1151 | BT_ERR("L2CAP socket unregistration failed"); | |
bb58f747 | 1152 | |
e2174ca4 | 1153 | proto_unregister(&l2cap_proto); |
bb58f747 | 1154 | } |