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1da177e4 LT |
1 | /********************************************************************* |
2 | * | |
3 | * Filename: af_irda.c | |
4 | * Version: 0.9 | |
5 | * Description: IrDA sockets implementation | |
6 | * Status: Stable | |
7 | * Author: Dag Brattli <dagb@cs.uit.no> | |
8 | * Created at: Sun May 31 10:12:43 1998 | |
9 | * Modified at: Sat Dec 25 21:10:23 1999 | |
10 | * Modified by: Dag Brattli <dag@brattli.net> | |
11 | * Sources: af_netroom.c, af_ax25.c, af_rose.c, af_x25.c etc. | |
12 | * | |
13 | * Copyright (c) 1999 Dag Brattli <dagb@cs.uit.no> | |
14 | * Copyright (c) 1999-2003 Jean Tourrilhes <jt@hpl.hp.com> | |
15 | * All Rights Reserved. | |
16 | * | |
17 | * This program is free software; you can redistribute it and/or | |
18 | * modify it under the terms of the GNU General Public License as | |
19 | * published by the Free Software Foundation; either version 2 of | |
20 | * the License, or (at your option) any later version. | |
21 | * | |
22 | * This program is distributed in the hope that it will be useful, | |
23 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
24 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
25 | * GNU General Public License for more details. | |
26 | * | |
27 | * You should have received a copy of the GNU General Public License | |
28 | * along with this program; if not, write to the Free Software | |
29 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
30 | * MA 02111-1307 USA | |
31 | * | |
32 | * Linux-IrDA now supports four different types of IrDA sockets: | |
33 | * | |
34 | * o SOCK_STREAM: TinyTP connections with SAR disabled. The | |
35 | * max SDU size is 0 for conn. of this type | |
36 | * o SOCK_SEQPACKET: TinyTP connections with SAR enabled. TTP may | |
37 | * fragment the messages, but will preserve | |
38 | * the message boundaries | |
39 | * o SOCK_DGRAM: IRDAPROTO_UNITDATA: TinyTP connections with Unitdata | |
40 | * (unreliable) transfers | |
41 | * IRDAPROTO_ULTRA: Connectionless and unreliable data | |
42 | * | |
43 | ********************************************************************/ | |
44 | ||
4fc268d2 | 45 | #include <linux/capability.h> |
1da177e4 LT |
46 | #include <linux/module.h> |
47 | #include <linux/types.h> | |
405f5571 | 48 | #include <linux/smp_lock.h> |
1da177e4 LT |
49 | #include <linux/socket.h> |
50 | #include <linux/sockios.h> | |
5a0e3ad6 | 51 | #include <linux/slab.h> |
1da177e4 LT |
52 | #include <linux/init.h> |
53 | #include <linux/net.h> | |
54 | #include <linux/irda.h> | |
55 | #include <linux/poll.h> | |
56 | ||
57 | #include <asm/ioctls.h> /* TIOCOUTQ, TIOCINQ */ | |
58 | #include <asm/uaccess.h> | |
59 | ||
60 | #include <net/sock.h> | |
c752f073 | 61 | #include <net/tcp_states.h> |
1da177e4 LT |
62 | |
63 | #include <net/irda/af_irda.h> | |
64 | ||
3f378b68 | 65 | static int irda_create(struct net *net, struct socket *sock, int protocol, int kern); |
1da177e4 | 66 | |
90ddc4f0 ED |
67 | static const struct proto_ops irda_stream_ops; |
68 | static const struct proto_ops irda_seqpacket_ops; | |
69 | static const struct proto_ops irda_dgram_ops; | |
1da177e4 LT |
70 | |
71 | #ifdef CONFIG_IRDA_ULTRA | |
90ddc4f0 | 72 | static const struct proto_ops irda_ultra_ops; |
1da177e4 LT |
73 | #define ULTRA_MAX_DATA 382 |
74 | #endif /* CONFIG_IRDA_ULTRA */ | |
75 | ||
76 | #define IRDA_MAX_HEADER (TTP_MAX_HEADER) | |
77 | ||
78 | /* | |
79 | * Function irda_data_indication (instance, sap, skb) | |
80 | * | |
81 | * Received some data from TinyTP. Just queue it on the receive queue | |
82 | * | |
83 | */ | |
84 | static int irda_data_indication(void *instance, void *sap, struct sk_buff *skb) | |
85 | { | |
86 | struct irda_sock *self; | |
87 | struct sock *sk; | |
88 | int err; | |
89 | ||
0dc47877 | 90 | IRDA_DEBUG(3, "%s()\n", __func__); |
1da177e4 LT |
91 | |
92 | self = instance; | |
93 | sk = instance; | |
1da177e4 LT |
94 | |
95 | err = sock_queue_rcv_skb(sk, skb); | |
96 | if (err) { | |
0dc47877 | 97 | IRDA_DEBUG(1, "%s(), error: no more mem!\n", __func__); |
1da177e4 LT |
98 | self->rx_flow = FLOW_STOP; |
99 | ||
100 | /* When we return error, TTP will need to requeue the skb */ | |
101 | return err; | |
102 | } | |
103 | ||
104 | return 0; | |
105 | } | |
106 | ||
107 | /* | |
108 | * Function irda_disconnect_indication (instance, sap, reason, skb) | |
109 | * | |
110 | * Connection has been closed. Check reason to find out why | |
111 | * | |
112 | */ | |
113 | static void irda_disconnect_indication(void *instance, void *sap, | |
114 | LM_REASON reason, struct sk_buff *skb) | |
115 | { | |
116 | struct irda_sock *self; | |
117 | struct sock *sk; | |
118 | ||
119 | self = instance; | |
120 | ||
0dc47877 | 121 | IRDA_DEBUG(2, "%s(%p)\n", __func__, self); |
1da177e4 LT |
122 | |
123 | /* Don't care about it, but let's not leak it */ | |
124 | if(skb) | |
125 | dev_kfree_skb(skb); | |
126 | ||
127 | sk = instance; | |
128 | if (sk == NULL) { | |
129 | IRDA_DEBUG(0, "%s(%p) : BUG : sk is NULL\n", | |
0dc47877 | 130 | __func__, self); |
1da177e4 LT |
131 | return; |
132 | } | |
133 | ||
134 | /* Prevent race conditions with irda_release() and irda_shutdown() */ | |
6e66aa15 | 135 | bh_lock_sock(sk); |
1da177e4 LT |
136 | if (!sock_flag(sk, SOCK_DEAD) && sk->sk_state != TCP_CLOSE) { |
137 | sk->sk_state = TCP_CLOSE; | |
1da177e4 LT |
138 | sk->sk_shutdown |= SEND_SHUTDOWN; |
139 | ||
140 | sk->sk_state_change(sk); | |
1da177e4 LT |
141 | |
142 | /* Close our TSAP. | |
143 | * If we leave it open, IrLMP put it back into the list of | |
144 | * unconnected LSAPs. The problem is that any incoming request | |
145 | * can then be matched to this socket (and it will be, because | |
146 | * it is at the head of the list). This would prevent any | |
147 | * listening socket waiting on the same TSAP to get those | |
148 | * requests. Some apps forget to close sockets, or hang to it | |
149 | * a bit too long, so we may stay in this dead state long | |
150 | * enough to be noticed... | |
151 | * Note : all socket function do check sk->sk_state, so we are | |
152 | * safe... | |
153 | * Jean II | |
154 | */ | |
155 | if (self->tsap) { | |
156 | irttp_close_tsap(self->tsap); | |
157 | self->tsap = NULL; | |
158 | } | |
6819bc2e | 159 | } |
6e66aa15 | 160 | bh_unlock_sock(sk); |
1da177e4 LT |
161 | |
162 | /* Note : once we are there, there is not much you want to do | |
163 | * with the socket anymore, apart from closing it. | |
164 | * For example, bind() and connect() won't reset sk->sk_err, | |
165 | * sk->sk_shutdown and sk->sk_flags to valid values... | |
166 | * Jean II | |
167 | */ | |
168 | } | |
169 | ||
170 | /* | |
171 | * Function irda_connect_confirm (instance, sap, qos, max_sdu_size, skb) | |
172 | * | |
173 | * Connections has been confirmed by the remote device | |
174 | * | |
175 | */ | |
176 | static void irda_connect_confirm(void *instance, void *sap, | |
177 | struct qos_info *qos, | |
178 | __u32 max_sdu_size, __u8 max_header_size, | |
179 | struct sk_buff *skb) | |
180 | { | |
181 | struct irda_sock *self; | |
182 | struct sock *sk; | |
183 | ||
184 | self = instance; | |
185 | ||
0dc47877 | 186 | IRDA_DEBUG(2, "%s(%p)\n", __func__, self); |
1da177e4 LT |
187 | |
188 | sk = instance; | |
189 | if (sk == NULL) { | |
190 | dev_kfree_skb(skb); | |
191 | return; | |
192 | } | |
193 | ||
194 | dev_kfree_skb(skb); | |
195 | // Should be ??? skb_queue_tail(&sk->sk_receive_queue, skb); | |
196 | ||
197 | /* How much header space do we need to reserve */ | |
198 | self->max_header_size = max_header_size; | |
199 | ||
200 | /* IrTTP max SDU size in transmit direction */ | |
201 | self->max_sdu_size_tx = max_sdu_size; | |
202 | ||
203 | /* Find out what the largest chunk of data that we can transmit is */ | |
204 | switch (sk->sk_type) { | |
205 | case SOCK_STREAM: | |
206 | if (max_sdu_size != 0) { | |
207 | IRDA_ERROR("%s: max_sdu_size must be 0\n", | |
0dc47877 | 208 | __func__); |
1da177e4 LT |
209 | return; |
210 | } | |
211 | self->max_data_size = irttp_get_max_seg_size(self->tsap); | |
212 | break; | |
213 | case SOCK_SEQPACKET: | |
214 | if (max_sdu_size == 0) { | |
215 | IRDA_ERROR("%s: max_sdu_size cannot be 0\n", | |
0dc47877 | 216 | __func__); |
1da177e4 LT |
217 | return; |
218 | } | |
219 | self->max_data_size = max_sdu_size; | |
220 | break; | |
221 | default: | |
222 | self->max_data_size = irttp_get_max_seg_size(self->tsap); | |
3ff50b79 | 223 | } |
1da177e4 | 224 | |
0dc47877 | 225 | IRDA_DEBUG(2, "%s(), max_data_size=%d\n", __func__, |
1da177e4 LT |
226 | self->max_data_size); |
227 | ||
228 | memcpy(&self->qos_tx, qos, sizeof(struct qos_info)); | |
229 | ||
230 | /* We are now connected! */ | |
231 | sk->sk_state = TCP_ESTABLISHED; | |
232 | sk->sk_state_change(sk); | |
233 | } | |
234 | ||
235 | /* | |
236 | * Function irda_connect_indication(instance, sap, qos, max_sdu_size, userdata) | |
237 | * | |
238 | * Incoming connection | |
239 | * | |
240 | */ | |
241 | static void irda_connect_indication(void *instance, void *sap, | |
242 | struct qos_info *qos, __u32 max_sdu_size, | |
243 | __u8 max_header_size, struct sk_buff *skb) | |
244 | { | |
245 | struct irda_sock *self; | |
246 | struct sock *sk; | |
247 | ||
248 | self = instance; | |
249 | ||
0dc47877 | 250 | IRDA_DEBUG(2, "%s(%p)\n", __func__, self); |
1da177e4 LT |
251 | |
252 | sk = instance; | |
253 | if (sk == NULL) { | |
254 | dev_kfree_skb(skb); | |
255 | return; | |
256 | } | |
257 | ||
258 | /* How much header space do we need to reserve */ | |
259 | self->max_header_size = max_header_size; | |
260 | ||
261 | /* IrTTP max SDU size in transmit direction */ | |
262 | self->max_sdu_size_tx = max_sdu_size; | |
263 | ||
264 | /* Find out what the largest chunk of data that we can transmit is */ | |
265 | switch (sk->sk_type) { | |
266 | case SOCK_STREAM: | |
267 | if (max_sdu_size != 0) { | |
268 | IRDA_ERROR("%s: max_sdu_size must be 0\n", | |
0dc47877 | 269 | __func__); |
1da177e4 LT |
270 | kfree_skb(skb); |
271 | return; | |
272 | } | |
273 | self->max_data_size = irttp_get_max_seg_size(self->tsap); | |
274 | break; | |
275 | case SOCK_SEQPACKET: | |
276 | if (max_sdu_size == 0) { | |
277 | IRDA_ERROR("%s: max_sdu_size cannot be 0\n", | |
0dc47877 | 278 | __func__); |
1da177e4 LT |
279 | kfree_skb(skb); |
280 | return; | |
281 | } | |
282 | self->max_data_size = max_sdu_size; | |
283 | break; | |
284 | default: | |
285 | self->max_data_size = irttp_get_max_seg_size(self->tsap); | |
3ff50b79 | 286 | } |
1da177e4 | 287 | |
0dc47877 | 288 | IRDA_DEBUG(2, "%s(), max_data_size=%d\n", __func__, |
1da177e4 LT |
289 | self->max_data_size); |
290 | ||
291 | memcpy(&self->qos_tx, qos, sizeof(struct qos_info)); | |
292 | ||
293 | skb_queue_tail(&sk->sk_receive_queue, skb); | |
294 | sk->sk_state_change(sk); | |
295 | } | |
296 | ||
297 | /* | |
298 | * Function irda_connect_response (handle) | |
299 | * | |
300 | * Accept incoming connection | |
301 | * | |
302 | */ | |
303 | static void irda_connect_response(struct irda_sock *self) | |
304 | { | |
305 | struct sk_buff *skb; | |
306 | ||
0dc47877 | 307 | IRDA_DEBUG(2, "%s()\n", __func__); |
1da177e4 | 308 | |
1b0fee7d SO |
309 | skb = alloc_skb(TTP_MAX_HEADER + TTP_SAR_HEADER, |
310 | GFP_ATOMIC); | |
1da177e4 LT |
311 | if (skb == NULL) { |
312 | IRDA_DEBUG(0, "%s() Unable to allocate sk_buff!\n", | |
0dc47877 | 313 | __func__); |
1da177e4 LT |
314 | return; |
315 | } | |
316 | ||
317 | /* Reserve space for MUX_CONTROL and LAP header */ | |
318 | skb_reserve(skb, IRDA_MAX_HEADER); | |
319 | ||
320 | irttp_connect_response(self->tsap, self->max_sdu_size_rx, skb); | |
321 | } | |
322 | ||
323 | /* | |
324 | * Function irda_flow_indication (instance, sap, flow) | |
325 | * | |
326 | * Used by TinyTP to tell us if it can accept more data or not | |
327 | * | |
328 | */ | |
329 | static void irda_flow_indication(void *instance, void *sap, LOCAL_FLOW flow) | |
330 | { | |
331 | struct irda_sock *self; | |
332 | struct sock *sk; | |
333 | ||
0dc47877 | 334 | IRDA_DEBUG(2, "%s()\n", __func__); |
1da177e4 LT |
335 | |
336 | self = instance; | |
337 | sk = instance; | |
c3ea9fa2 | 338 | BUG_ON(sk == NULL); |
1da177e4 LT |
339 | |
340 | switch (flow) { | |
341 | case FLOW_STOP: | |
342 | IRDA_DEBUG(1, "%s(), IrTTP wants us to slow down\n", | |
0dc47877 | 343 | __func__); |
1da177e4 LT |
344 | self->tx_flow = flow; |
345 | break; | |
346 | case FLOW_START: | |
347 | self->tx_flow = flow; | |
348 | IRDA_DEBUG(1, "%s(), IrTTP wants us to start again\n", | |
0dc47877 | 349 | __func__); |
aa395145 | 350 | wake_up_interruptible(sk_sleep(sk)); |
1da177e4 LT |
351 | break; |
352 | default: | |
0dc47877 | 353 | IRDA_DEBUG(0, "%s(), Unknown flow command!\n", __func__); |
1da177e4 LT |
354 | /* Unknown flow command, better stop */ |
355 | self->tx_flow = flow; | |
356 | break; | |
357 | } | |
358 | } | |
359 | ||
360 | /* | |
361 | * Function irda_getvalue_confirm (obj_id, value, priv) | |
362 | * | |
363 | * Got answer from remote LM-IAS, just pass object to requester... | |
364 | * | |
365 | * Note : duplicate from above, but we need our own version that | |
366 | * doesn't touch the dtsap_sel and save the full value structure... | |
367 | */ | |
368 | static void irda_getvalue_confirm(int result, __u16 obj_id, | |
369 | struct ias_value *value, void *priv) | |
370 | { | |
371 | struct irda_sock *self; | |
372 | ||
373 | self = (struct irda_sock *) priv; | |
374 | if (!self) { | |
0dc47877 | 375 | IRDA_WARNING("%s: lost myself!\n", __func__); |
1da177e4 LT |
376 | return; |
377 | } | |
378 | ||
0dc47877 | 379 | IRDA_DEBUG(2, "%s(%p)\n", __func__, self); |
1da177e4 LT |
380 | |
381 | /* We probably don't need to make any more queries */ | |
382 | iriap_close(self->iriap); | |
383 | self->iriap = NULL; | |
384 | ||
385 | /* Check if request succeeded */ | |
386 | if (result != IAS_SUCCESS) { | |
0dc47877 | 387 | IRDA_DEBUG(1, "%s(), IAS query failed! (%d)\n", __func__, |
1da177e4 LT |
388 | result); |
389 | ||
390 | self->errno = result; /* We really need it later */ | |
391 | ||
392 | /* Wake up any processes waiting for result */ | |
393 | wake_up_interruptible(&self->query_wait); | |
394 | ||
395 | return; | |
396 | } | |
397 | ||
398 | /* Pass the object to the caller (so the caller must delete it) */ | |
399 | self->ias_result = value; | |
400 | self->errno = 0; | |
401 | ||
402 | /* Wake up any processes waiting for result */ | |
403 | wake_up_interruptible(&self->query_wait); | |
404 | } | |
405 | ||
406 | /* | |
407 | * Function irda_selective_discovery_indication (discovery) | |
408 | * | |
409 | * Got a selective discovery indication from IrLMP. | |
410 | * | |
411 | * IrLMP is telling us that this node is new and matching our hint bit | |
412 | * filter. Wake up any process waiting for answer... | |
413 | */ | |
414 | static void irda_selective_discovery_indication(discinfo_t *discovery, | |
415 | DISCOVERY_MODE mode, | |
416 | void *priv) | |
417 | { | |
418 | struct irda_sock *self; | |
419 | ||
0dc47877 | 420 | IRDA_DEBUG(2, "%s()\n", __func__); |
1da177e4 LT |
421 | |
422 | self = (struct irda_sock *) priv; | |
423 | if (!self) { | |
0dc47877 | 424 | IRDA_WARNING("%s: lost myself!\n", __func__); |
1da177e4 LT |
425 | return; |
426 | } | |
427 | ||
428 | /* Pass parameter to the caller */ | |
429 | self->cachedaddr = discovery->daddr; | |
430 | ||
431 | /* Wake up process if its waiting for device to be discovered */ | |
432 | wake_up_interruptible(&self->query_wait); | |
433 | } | |
434 | ||
435 | /* | |
436 | * Function irda_discovery_timeout (priv) | |
437 | * | |
438 | * Timeout in the selective discovery process | |
439 | * | |
440 | * We were waiting for a node to be discovered, but nothing has come up | |
441 | * so far. Wake up the user and tell him that we failed... | |
442 | */ | |
443 | static void irda_discovery_timeout(u_long priv) | |
444 | { | |
445 | struct irda_sock *self; | |
446 | ||
0dc47877 | 447 | IRDA_DEBUG(2, "%s()\n", __func__); |
1da177e4 LT |
448 | |
449 | self = (struct irda_sock *) priv; | |
c3ea9fa2 | 450 | BUG_ON(self == NULL); |
1da177e4 LT |
451 | |
452 | /* Nothing for the caller */ | |
453 | self->cachelog = NULL; | |
454 | self->cachedaddr = 0; | |
455 | self->errno = -ETIME; | |
456 | ||
457 | /* Wake up process if its still waiting... */ | |
458 | wake_up_interruptible(&self->query_wait); | |
459 | } | |
460 | ||
461 | /* | |
462 | * Function irda_open_tsap (self) | |
463 | * | |
464 | * Open local Transport Service Access Point (TSAP) | |
465 | * | |
466 | */ | |
467 | static int irda_open_tsap(struct irda_sock *self, __u8 tsap_sel, char *name) | |
468 | { | |
469 | notify_t notify; | |
470 | ||
471 | if (self->tsap) { | |
0dc47877 | 472 | IRDA_WARNING("%s: busy!\n", __func__); |
1da177e4 LT |
473 | return -EBUSY; |
474 | } | |
475 | ||
476 | /* Initialize callbacks to be used by the IrDA stack */ | |
477 | irda_notify_init(¬ify); | |
478 | notify.connect_confirm = irda_connect_confirm; | |
479 | notify.connect_indication = irda_connect_indication; | |
480 | notify.disconnect_indication = irda_disconnect_indication; | |
481 | notify.data_indication = irda_data_indication; | |
482 | notify.udata_indication = irda_data_indication; | |
483 | notify.flow_indication = irda_flow_indication; | |
484 | notify.instance = self; | |
485 | strncpy(notify.name, name, NOTIFY_MAX_NAME); | |
486 | ||
487 | self->tsap = irttp_open_tsap(tsap_sel, DEFAULT_INITIAL_CREDIT, | |
488 | ¬ify); | |
489 | if (self->tsap == NULL) { | |
490 | IRDA_DEBUG(0, "%s(), Unable to allocate TSAP!\n", | |
0dc47877 | 491 | __func__); |
1da177e4 LT |
492 | return -ENOMEM; |
493 | } | |
494 | /* Remember which TSAP selector we actually got */ | |
495 | self->stsap_sel = self->tsap->stsap_sel; | |
496 | ||
497 | return 0; | |
498 | } | |
499 | ||
500 | /* | |
501 | * Function irda_open_lsap (self) | |
502 | * | |
503 | * Open local Link Service Access Point (LSAP). Used for opening Ultra | |
504 | * sockets | |
505 | */ | |
506 | #ifdef CONFIG_IRDA_ULTRA | |
507 | static int irda_open_lsap(struct irda_sock *self, int pid) | |
508 | { | |
509 | notify_t notify; | |
510 | ||
511 | if (self->lsap) { | |
0dc47877 | 512 | IRDA_WARNING("%s(), busy!\n", __func__); |
1da177e4 LT |
513 | return -EBUSY; |
514 | } | |
515 | ||
516 | /* Initialize callbacks to be used by the IrDA stack */ | |
517 | irda_notify_init(¬ify); | |
518 | notify.udata_indication = irda_data_indication; | |
519 | notify.instance = self; | |
520 | strncpy(notify.name, "Ultra", NOTIFY_MAX_NAME); | |
521 | ||
522 | self->lsap = irlmp_open_lsap(LSAP_CONNLESS, ¬ify, pid); | |
523 | if (self->lsap == NULL) { | |
0dc47877 | 524 | IRDA_DEBUG( 0, "%s(), Unable to allocate LSAP!\n", __func__); |
1da177e4 LT |
525 | return -ENOMEM; |
526 | } | |
527 | ||
528 | return 0; | |
529 | } | |
530 | #endif /* CONFIG_IRDA_ULTRA */ | |
531 | ||
532 | /* | |
533 | * Function irda_find_lsap_sel (self, name) | |
534 | * | |
535 | * Try to lookup LSAP selector in remote LM-IAS | |
536 | * | |
537 | * Basically, we start a IAP query, and then go to sleep. When the query | |
538 | * return, irda_getvalue_confirm will wake us up, and we can examine the | |
539 | * result of the query... | |
540 | * Note that in some case, the query fail even before we go to sleep, | |
541 | * creating some races... | |
542 | */ | |
543 | static int irda_find_lsap_sel(struct irda_sock *self, char *name) | |
544 | { | |
0dc47877 | 545 | IRDA_DEBUG(2, "%s(%p, %s)\n", __func__, self, name); |
1da177e4 | 546 | |
1da177e4 LT |
547 | if (self->iriap) { |
548 | IRDA_WARNING("%s(): busy with a previous query\n", | |
0dc47877 | 549 | __func__); |
1da177e4 LT |
550 | return -EBUSY; |
551 | } | |
552 | ||
553 | self->iriap = iriap_open(LSAP_ANY, IAS_CLIENT, self, | |
554 | irda_getvalue_confirm); | |
555 | if(self->iriap == NULL) | |
556 | return -ENOMEM; | |
557 | ||
558 | /* Treat unexpected wakeup as disconnect */ | |
559 | self->errno = -EHOSTUNREACH; | |
560 | ||
561 | /* Query remote LM-IAS */ | |
562 | iriap_getvaluebyclass_request(self->iriap, self->saddr, self->daddr, | |
563 | name, "IrDA:TinyTP:LsapSel"); | |
564 | ||
565 | /* Wait for answer, if not yet finished (or failed) */ | |
566 | if (wait_event_interruptible(self->query_wait, (self->iriap==NULL))) | |
567 | /* Treat signals as disconnect */ | |
568 | return -EHOSTUNREACH; | |
569 | ||
570 | /* Check what happened */ | |
571 | if (self->errno) | |
572 | { | |
573 | /* Requested object/attribute doesn't exist */ | |
574 | if((self->errno == IAS_CLASS_UNKNOWN) || | |
575 | (self->errno == IAS_ATTRIB_UNKNOWN)) | |
a02cec21 | 576 | return -EADDRNOTAVAIL; |
1da177e4 | 577 | else |
a02cec21 | 578 | return -EHOSTUNREACH; |
1da177e4 LT |
579 | } |
580 | ||
581 | /* Get the remote TSAP selector */ | |
582 | switch (self->ias_result->type) { | |
583 | case IAS_INTEGER: | |
584 | IRDA_DEBUG(4, "%s() int=%d\n", | |
0dc47877 | 585 | __func__, self->ias_result->t.integer); |
1da177e4 LT |
586 | |
587 | if (self->ias_result->t.integer != -1) | |
588 | self->dtsap_sel = self->ias_result->t.integer; | |
589 | else | |
590 | self->dtsap_sel = 0; | |
591 | break; | |
592 | default: | |
593 | self->dtsap_sel = 0; | |
0dc47877 | 594 | IRDA_DEBUG(0, "%s(), bad type!\n", __func__); |
1da177e4 LT |
595 | break; |
596 | } | |
597 | if (self->ias_result) | |
598 | irias_delete_value(self->ias_result); | |
599 | ||
600 | if (self->dtsap_sel) | |
601 | return 0; | |
602 | ||
603 | return -EADDRNOTAVAIL; | |
604 | } | |
605 | ||
606 | /* | |
607 | * Function irda_discover_daddr_and_lsap_sel (self, name) | |
608 | * | |
609 | * This try to find a device with the requested service. | |
610 | * | |
611 | * It basically look into the discovery log. For each address in the list, | |
612 | * it queries the LM-IAS of the device to find if this device offer | |
613 | * the requested service. | |
614 | * If there is more than one node supporting the service, we complain | |
615 | * to the user (it should move devices around). | |
616 | * The, we set both the destination address and the lsap selector to point | |
617 | * on the service on the unique device we have found. | |
618 | * | |
619 | * Note : this function fails if there is more than one device in range, | |
620 | * because IrLMP doesn't disconnect the LAP when the last LSAP is closed. | |
621 | * Moreover, we would need to wait the LAP disconnection... | |
622 | */ | |
623 | static int irda_discover_daddr_and_lsap_sel(struct irda_sock *self, char *name) | |
624 | { | |
625 | discinfo_t *discoveries; /* Copy of the discovery log */ | |
626 | int number; /* Number of nodes in the log */ | |
627 | int i; | |
628 | int err = -ENETUNREACH; | |
629 | __u32 daddr = DEV_ADDR_ANY; /* Address we found the service on */ | |
630 | __u8 dtsap_sel = 0x0; /* TSAP associated with it */ | |
631 | ||
0dc47877 | 632 | IRDA_DEBUG(2, "%s(), name=%s\n", __func__, name); |
1da177e4 | 633 | |
1da177e4 LT |
634 | /* Ask lmp for the current discovery log |
635 | * Note : we have to use irlmp_get_discoveries(), as opposed | |
636 | * to play with the cachelog directly, because while we are | |
637 | * making our ias query, le log might change... */ | |
638 | discoveries = irlmp_get_discoveries(&number, self->mask.word, | |
639 | self->nslots); | |
640 | /* Check if the we got some results */ | |
641 | if (discoveries == NULL) | |
642 | return -ENETUNREACH; /* No nodes discovered */ | |
643 | ||
644 | /* | |
645 | * Now, check all discovered devices (if any), and connect | |
646 | * client only about the services that the client is | |
647 | * interested in... | |
648 | */ | |
649 | for(i = 0; i < number; i++) { | |
650 | /* Try the address in the log */ | |
651 | self->daddr = discoveries[i].daddr; | |
652 | self->saddr = 0x0; | |
653 | IRDA_DEBUG(1, "%s(), trying daddr = %08x\n", | |
0dc47877 | 654 | __func__, self->daddr); |
1da177e4 LT |
655 | |
656 | /* Query remote LM-IAS for this service */ | |
657 | err = irda_find_lsap_sel(self, name); | |
658 | switch (err) { | |
659 | case 0: | |
660 | /* We found the requested service */ | |
661 | if(daddr != DEV_ADDR_ANY) { | |
662 | IRDA_DEBUG(1, "%s(), discovered service ''%s'' in two different devices !!!\n", | |
0dc47877 | 663 | __func__, name); |
1da177e4 LT |
664 | self->daddr = DEV_ADDR_ANY; |
665 | kfree(discoveries); | |
a02cec21 | 666 | return -ENOTUNIQ; |
1da177e4 LT |
667 | } |
668 | /* First time we found that one, save it ! */ | |
669 | daddr = self->daddr; | |
670 | dtsap_sel = self->dtsap_sel; | |
671 | break; | |
672 | case -EADDRNOTAVAIL: | |
673 | /* Requested service simply doesn't exist on this node */ | |
674 | break; | |
675 | default: | |
676 | /* Something bad did happen :-( */ | |
0dc47877 | 677 | IRDA_DEBUG(0, "%s(), unexpected IAS query failure\n", __func__); |
1da177e4 LT |
678 | self->daddr = DEV_ADDR_ANY; |
679 | kfree(discoveries); | |
a02cec21 | 680 | return -EHOSTUNREACH; |
1da177e4 LT |
681 | break; |
682 | } | |
683 | } | |
684 | /* Cleanup our copy of the discovery log */ | |
685 | kfree(discoveries); | |
686 | ||
687 | /* Check out what we found */ | |
688 | if(daddr == DEV_ADDR_ANY) { | |
689 | IRDA_DEBUG(1, "%s(), cannot discover service ''%s'' in any device !!!\n", | |
0dc47877 | 690 | __func__, name); |
1da177e4 | 691 | self->daddr = DEV_ADDR_ANY; |
a02cec21 | 692 | return -EADDRNOTAVAIL; |
1da177e4 LT |
693 | } |
694 | ||
695 | /* Revert back to discovered device & service */ | |
696 | self->daddr = daddr; | |
697 | self->saddr = 0x0; | |
698 | self->dtsap_sel = dtsap_sel; | |
699 | ||
700 | IRDA_DEBUG(1, "%s(), discovered requested service ''%s'' at address %08x\n", | |
0dc47877 | 701 | __func__, name, self->daddr); |
1da177e4 LT |
702 | |
703 | return 0; | |
704 | } | |
705 | ||
706 | /* | |
707 | * Function irda_getname (sock, uaddr, uaddr_len, peer) | |
708 | * | |
709 | * Return the our own, or peers socket address (sockaddr_irda) | |
710 | * | |
711 | */ | |
712 | static int irda_getname(struct socket *sock, struct sockaddr *uaddr, | |
713 | int *uaddr_len, int peer) | |
714 | { | |
715 | struct sockaddr_irda saddr; | |
716 | struct sock *sk = sock->sk; | |
717 | struct irda_sock *self = irda_sk(sk); | |
718 | ||
09384dfc | 719 | memset(&saddr, 0, sizeof(saddr)); |
1da177e4 LT |
720 | if (peer) { |
721 | if (sk->sk_state != TCP_ESTABLISHED) | |
5b40964e | 722 | return -ENOTCONN; |
1da177e4 LT |
723 | |
724 | saddr.sir_family = AF_IRDA; | |
725 | saddr.sir_lsap_sel = self->dtsap_sel; | |
726 | saddr.sir_addr = self->daddr; | |
727 | } else { | |
728 | saddr.sir_family = AF_IRDA; | |
729 | saddr.sir_lsap_sel = self->stsap_sel; | |
730 | saddr.sir_addr = self->saddr; | |
731 | } | |
732 | ||
0dc47877 HH |
733 | IRDA_DEBUG(1, "%s(), tsap_sel = %#x\n", __func__, saddr.sir_lsap_sel); |
734 | IRDA_DEBUG(1, "%s(), addr = %08x\n", __func__, saddr.sir_addr); | |
1da177e4 LT |
735 | |
736 | /* uaddr_len come to us uninitialised */ | |
737 | *uaddr_len = sizeof (struct sockaddr_irda); | |
738 | memcpy(uaddr, &saddr, *uaddr_len); | |
5b40964e SO |
739 | |
740 | return 0; | |
1da177e4 LT |
741 | } |
742 | ||
743 | /* | |
744 | * Function irda_listen (sock, backlog) | |
745 | * | |
746 | * Just move to the listen state | |
747 | * | |
748 | */ | |
749 | static int irda_listen(struct socket *sock, int backlog) | |
750 | { | |
751 | struct sock *sk = sock->sk; | |
58a9d732 | 752 | int err = -EOPNOTSUPP; |
1da177e4 | 753 | |
0dc47877 | 754 | IRDA_DEBUG(2, "%s()\n", __func__); |
1da177e4 | 755 | |
5b40964e SO |
756 | lock_sock(sk); |
757 | ||
1da177e4 LT |
758 | if ((sk->sk_type != SOCK_STREAM) && (sk->sk_type != SOCK_SEQPACKET) && |
759 | (sk->sk_type != SOCK_DGRAM)) | |
58a9d732 | 760 | goto out; |
1da177e4 LT |
761 | |
762 | if (sk->sk_state != TCP_LISTEN) { | |
763 | sk->sk_max_ack_backlog = backlog; | |
764 | sk->sk_state = TCP_LISTEN; | |
765 | ||
58a9d732 | 766 | err = 0; |
1da177e4 | 767 | } |
58a9d732 | 768 | out: |
5b40964e | 769 | release_sock(sk); |
1da177e4 | 770 | |
58a9d732 | 771 | return err; |
1da177e4 LT |
772 | } |
773 | ||
774 | /* | |
775 | * Function irda_bind (sock, uaddr, addr_len) | |
776 | * | |
777 | * Used by servers to register their well known TSAP | |
778 | * | |
779 | */ | |
780 | static int irda_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len) | |
781 | { | |
782 | struct sock *sk = sock->sk; | |
783 | struct sockaddr_irda *addr = (struct sockaddr_irda *) uaddr; | |
784 | struct irda_sock *self = irda_sk(sk); | |
785 | int err; | |
786 | ||
0dc47877 | 787 | IRDA_DEBUG(2, "%s(%p)\n", __func__, self); |
1da177e4 LT |
788 | |
789 | if (addr_len != sizeof(struct sockaddr_irda)) | |
790 | return -EINVAL; | |
791 | ||
5b40964e | 792 | lock_sock(sk); |
1da177e4 LT |
793 | #ifdef CONFIG_IRDA_ULTRA |
794 | /* Special care for Ultra sockets */ | |
795 | if ((sk->sk_type == SOCK_DGRAM) && | |
796 | (sk->sk_protocol == IRDAPROTO_ULTRA)) { | |
797 | self->pid = addr->sir_lsap_sel; | |
58a9d732 | 798 | err = -EOPNOTSUPP; |
1da177e4 | 799 | if (self->pid & 0x80) { |
0dc47877 | 800 | IRDA_DEBUG(0, "%s(), extension in PID not supp!\n", __func__); |
58a9d732 | 801 | goto out; |
1da177e4 LT |
802 | } |
803 | err = irda_open_lsap(self, self->pid); | |
804 | if (err < 0) | |
58a9d732 | 805 | goto out; |
1da177e4 LT |
806 | |
807 | /* Pretend we are connected */ | |
808 | sock->state = SS_CONNECTED; | |
809 | sk->sk_state = TCP_ESTABLISHED; | |
58a9d732 | 810 | err = 0; |
1da177e4 | 811 | |
58a9d732 | 812 | goto out; |
1da177e4 LT |
813 | } |
814 | #endif /* CONFIG_IRDA_ULTRA */ | |
815 | ||
61e44b48 | 816 | self->ias_obj = irias_new_object(addr->sir_name, jiffies); |
58a9d732 | 817 | err = -ENOMEM; |
61e44b48 | 818 | if (self->ias_obj == NULL) |
58a9d732 | 819 | goto out; |
61e44b48 | 820 | |
1da177e4 | 821 | err = irda_open_tsap(self, addr->sir_lsap_sel, addr->sir_name); |
61e44b48 | 822 | if (err < 0) { |
628e300c DM |
823 | irias_delete_object(self->ias_obj); |
824 | self->ias_obj = NULL; | |
58a9d732 | 825 | goto out; |
61e44b48 | 826 | } |
1da177e4 LT |
827 | |
828 | /* Register with LM-IAS */ | |
1da177e4 LT |
829 | irias_add_integer_attrib(self->ias_obj, "IrDA:TinyTP:LsapSel", |
830 | self->stsap_sel, IAS_KERNEL_ATTR); | |
831 | irias_insert_object(self->ias_obj); | |
832 | ||
58a9d732 AB |
833 | err = 0; |
834 | out: | |
5b40964e | 835 | release_sock(sk); |
58a9d732 | 836 | return err; |
1da177e4 LT |
837 | } |
838 | ||
839 | /* | |
840 | * Function irda_accept (sock, newsock, flags) | |
841 | * | |
842 | * Wait for incoming connection | |
843 | * | |
844 | */ | |
845 | static int irda_accept(struct socket *sock, struct socket *newsock, int flags) | |
846 | { | |
847 | struct sock *sk = sock->sk; | |
848 | struct irda_sock *new, *self = irda_sk(sk); | |
849 | struct sock *newsk; | |
850 | struct sk_buff *skb; | |
851 | int err; | |
852 | ||
0dc47877 | 853 | IRDA_DEBUG(2, "%s()\n", __func__); |
1da177e4 | 854 | |
3f378b68 | 855 | err = irda_create(sock_net(sk), newsock, sk->sk_protocol, 0); |
1da177e4 | 856 | if (err) |
5b40964e | 857 | return err; |
1da177e4 | 858 | |
58a9d732 | 859 | err = -EINVAL; |
5b40964e SO |
860 | |
861 | lock_sock(sk); | |
1da177e4 | 862 | if (sock->state != SS_UNCONNECTED) |
58a9d732 | 863 | goto out; |
1da177e4 LT |
864 | |
865 | if ((sk = sock->sk) == NULL) | |
58a9d732 | 866 | goto out; |
1da177e4 | 867 | |
58a9d732 | 868 | err = -EOPNOTSUPP; |
1da177e4 LT |
869 | if ((sk->sk_type != SOCK_STREAM) && (sk->sk_type != SOCK_SEQPACKET) && |
870 | (sk->sk_type != SOCK_DGRAM)) | |
58a9d732 | 871 | goto out; |
1da177e4 | 872 | |
58a9d732 | 873 | err = -EINVAL; |
1da177e4 | 874 | if (sk->sk_state != TCP_LISTEN) |
58a9d732 | 875 | goto out; |
1da177e4 LT |
876 | |
877 | /* | |
878 | * The read queue this time is holding sockets ready to use | |
879 | * hooked into the SABM we saved | |
880 | */ | |
881 | ||
882 | /* | |
883 | * We can perform the accept only if there is incoming data | |
884 | * on the listening socket. | |
885 | * So, we will block the caller until we receive any data. | |
886 | * If the caller was waiting on select() or poll() before | |
887 | * calling us, the data is waiting for us ;-) | |
888 | * Jean II | |
889 | */ | |
d7f48d1a SO |
890 | while (1) { |
891 | skb = skb_dequeue(&sk->sk_receive_queue); | |
892 | if (skb) | |
893 | break; | |
1da177e4 LT |
894 | |
895 | /* Non blocking operation */ | |
58a9d732 | 896 | err = -EWOULDBLOCK; |
1da177e4 | 897 | if (flags & O_NONBLOCK) |
58a9d732 | 898 | goto out; |
1da177e4 | 899 | |
aa395145 | 900 | err = wait_event_interruptible(*(sk_sleep(sk)), |
d7f48d1a SO |
901 | skb_peek(&sk->sk_receive_queue)); |
902 | if (err) | |
58a9d732 | 903 | goto out; |
1da177e4 LT |
904 | } |
905 | ||
906 | newsk = newsock->sk; | |
58a9d732 | 907 | err = -EIO; |
c3ea9fa2 | 908 | if (newsk == NULL) |
58a9d732 | 909 | goto out; |
c3ea9fa2 | 910 | |
1da177e4 LT |
911 | newsk->sk_state = TCP_ESTABLISHED; |
912 | ||
913 | new = irda_sk(newsk); | |
1da177e4 LT |
914 | |
915 | /* Now attach up the new socket */ | |
916 | new->tsap = irttp_dup(self->tsap, new); | |
58a9d732 | 917 | err = -EPERM; /* value does not seem to make sense. -arnd */ |
1da177e4 | 918 | if (!new->tsap) { |
0dc47877 | 919 | IRDA_DEBUG(0, "%s(), dup failed!\n", __func__); |
1da177e4 | 920 | kfree_skb(skb); |
58a9d732 | 921 | goto out; |
1da177e4 LT |
922 | } |
923 | ||
924 | new->stsap_sel = new->tsap->stsap_sel; | |
925 | new->dtsap_sel = new->tsap->dtsap_sel; | |
926 | new->saddr = irttp_get_saddr(new->tsap); | |
927 | new->daddr = irttp_get_daddr(new->tsap); | |
928 | ||
929 | new->max_sdu_size_tx = self->max_sdu_size_tx; | |
930 | new->max_sdu_size_rx = self->max_sdu_size_rx; | |
931 | new->max_data_size = self->max_data_size; | |
932 | new->max_header_size = self->max_header_size; | |
933 | ||
934 | memcpy(&new->qos_tx, &self->qos_tx, sizeof(struct qos_info)); | |
935 | ||
936 | /* Clean up the original one to keep it in listen state */ | |
937 | irttp_listen(self->tsap); | |
938 | ||
1da177e4 LT |
939 | kfree_skb(skb); |
940 | sk->sk_ack_backlog--; | |
941 | ||
942 | newsock->state = SS_CONNECTED; | |
943 | ||
944 | irda_connect_response(new); | |
58a9d732 AB |
945 | err = 0; |
946 | out: | |
5b40964e | 947 | release_sock(sk); |
58a9d732 | 948 | return err; |
1da177e4 LT |
949 | } |
950 | ||
951 | /* | |
952 | * Function irda_connect (sock, uaddr, addr_len, flags) | |
953 | * | |
954 | * Connect to a IrDA device | |
955 | * | |
956 | * The main difference with a "standard" connect is that with IrDA we need | |
957 | * to resolve the service name into a TSAP selector (in TCP, port number | |
958 | * doesn't have to be resolved). | |
959 | * Because of this service name resoltion, we can offer "auto-connect", | |
960 | * where we connect to a service without specifying a destination address. | |
961 | * | |
962 | * Note : by consulting "errno", the user space caller may learn the cause | |
963 | * of the failure. Most of them are visible in the function, others may come | |
964 | * from subroutines called and are listed here : | |
965 | * o EBUSY : already processing a connect | |
966 | * o EHOSTUNREACH : bad addr->sir_addr argument | |
967 | * o EADDRNOTAVAIL : bad addr->sir_name argument | |
968 | * o ENOTUNIQ : more than one node has addr->sir_name (auto-connect) | |
969 | * o ENETUNREACH : no node found on the network (auto-connect) | |
970 | */ | |
971 | static int irda_connect(struct socket *sock, struct sockaddr *uaddr, | |
972 | int addr_len, int flags) | |
973 | { | |
974 | struct sock *sk = sock->sk; | |
975 | struct sockaddr_irda *addr = (struct sockaddr_irda *) uaddr; | |
976 | struct irda_sock *self = irda_sk(sk); | |
977 | int err; | |
978 | ||
0dc47877 | 979 | IRDA_DEBUG(2, "%s(%p)\n", __func__, self); |
1da177e4 | 980 | |
5b40964e | 981 | lock_sock(sk); |
1da177e4 | 982 | /* Don't allow connect for Ultra sockets */ |
58a9d732 | 983 | err = -ESOCKTNOSUPPORT; |
1da177e4 | 984 | if ((sk->sk_type == SOCK_DGRAM) && (sk->sk_protocol == IRDAPROTO_ULTRA)) |
58a9d732 | 985 | goto out; |
1da177e4 LT |
986 | |
987 | if (sk->sk_state == TCP_ESTABLISHED && sock->state == SS_CONNECTING) { | |
988 | sock->state = SS_CONNECTED; | |
58a9d732 AB |
989 | err = 0; |
990 | goto out; /* Connect completed during a ERESTARTSYS event */ | |
1da177e4 LT |
991 | } |
992 | ||
993 | if (sk->sk_state == TCP_CLOSE && sock->state == SS_CONNECTING) { | |
994 | sock->state = SS_UNCONNECTED; | |
58a9d732 AB |
995 | err = -ECONNREFUSED; |
996 | goto out; | |
1da177e4 LT |
997 | } |
998 | ||
58a9d732 | 999 | err = -EISCONN; /* No reconnect on a seqpacket socket */ |
1da177e4 | 1000 | if (sk->sk_state == TCP_ESTABLISHED) |
58a9d732 | 1001 | goto out; |
1da177e4 LT |
1002 | |
1003 | sk->sk_state = TCP_CLOSE; | |
1004 | sock->state = SS_UNCONNECTED; | |
1005 | ||
58a9d732 | 1006 | err = -EINVAL; |
1da177e4 | 1007 | if (addr_len != sizeof(struct sockaddr_irda)) |
58a9d732 | 1008 | goto out; |
1da177e4 LT |
1009 | |
1010 | /* Check if user supplied any destination device address */ | |
1011 | if ((!addr->sir_addr) || (addr->sir_addr == DEV_ADDR_ANY)) { | |
1012 | /* Try to find one suitable */ | |
1013 | err = irda_discover_daddr_and_lsap_sel(self, addr->sir_name); | |
1014 | if (err) { | |
0dc47877 | 1015 | IRDA_DEBUG(0, "%s(), auto-connect failed!\n", __func__); |
58a9d732 | 1016 | goto out; |
1da177e4 LT |
1017 | } |
1018 | } else { | |
1019 | /* Use the one provided by the user */ | |
1020 | self->daddr = addr->sir_addr; | |
0dc47877 | 1021 | IRDA_DEBUG(1, "%s(), daddr = %08x\n", __func__, self->daddr); |
1da177e4 LT |
1022 | |
1023 | /* If we don't have a valid service name, we assume the | |
1024 | * user want to connect on a specific LSAP. Prevent | |
1025 | * the use of invalid LSAPs (IrLMP 1.1 p10). Jean II */ | |
1026 | if((addr->sir_name[0] != '\0') || | |
1027 | (addr->sir_lsap_sel >= 0x70)) { | |
1028 | /* Query remote LM-IAS using service name */ | |
1029 | err = irda_find_lsap_sel(self, addr->sir_name); | |
1030 | if (err) { | |
0dc47877 | 1031 | IRDA_DEBUG(0, "%s(), connect failed!\n", __func__); |
58a9d732 | 1032 | goto out; |
1da177e4 LT |
1033 | } |
1034 | } else { | |
1035 | /* Directly connect to the remote LSAP | |
1036 | * specified by the sir_lsap field. | |
1037 | * Please use with caution, in IrDA LSAPs are | |
1038 | * dynamic and there is no "well-known" LSAP. */ | |
1039 | self->dtsap_sel = addr->sir_lsap_sel; | |
1040 | } | |
1041 | } | |
1042 | ||
1043 | /* Check if we have opened a local TSAP */ | |
1044 | if (!self->tsap) | |
1045 | irda_open_tsap(self, LSAP_ANY, addr->sir_name); | |
1046 | ||
1047 | /* Move to connecting socket, start sending Connect Requests */ | |
1048 | sock->state = SS_CONNECTING; | |
1049 | sk->sk_state = TCP_SYN_SENT; | |
1050 | ||
1051 | /* Connect to remote device */ | |
1052 | err = irttp_connect_request(self->tsap, self->dtsap_sel, | |
1053 | self->saddr, self->daddr, NULL, | |
1054 | self->max_sdu_size_rx, NULL); | |
1055 | if (err) { | |
0dc47877 | 1056 | IRDA_DEBUG(0, "%s(), connect failed!\n", __func__); |
58a9d732 | 1057 | goto out; |
1da177e4 LT |
1058 | } |
1059 | ||
1060 | /* Now the loop */ | |
58a9d732 | 1061 | err = -EINPROGRESS; |
1da177e4 | 1062 | if (sk->sk_state != TCP_ESTABLISHED && (flags & O_NONBLOCK)) |
58a9d732 | 1063 | goto out; |
1da177e4 | 1064 | |
58a9d732 | 1065 | err = -ERESTARTSYS; |
aa395145 | 1066 | if (wait_event_interruptible(*(sk_sleep(sk)), |
1da177e4 | 1067 | (sk->sk_state != TCP_SYN_SENT))) |
58a9d732 | 1068 | goto out; |
1da177e4 LT |
1069 | |
1070 | if (sk->sk_state != TCP_ESTABLISHED) { | |
1071 | sock->state = SS_UNCONNECTED; | |
5b40964e SO |
1072 | if (sk->sk_prot->disconnect(sk, flags)) |
1073 | sock->state = SS_DISCONNECTING; | |
6e66aa15 | 1074 | err = sock_error(sk); |
58a9d732 AB |
1075 | if (!err) |
1076 | err = -ECONNRESET; | |
1077 | goto out; | |
1da177e4 LT |
1078 | } |
1079 | ||
1080 | sock->state = SS_CONNECTED; | |
1081 | ||
1082 | /* At this point, IrLMP has assigned our source address */ | |
1083 | self->saddr = irttp_get_saddr(self->tsap); | |
58a9d732 AB |
1084 | err = 0; |
1085 | out: | |
5b40964e | 1086 | release_sock(sk); |
58a9d732 | 1087 | return err; |
1da177e4 LT |
1088 | } |
1089 | ||
1090 | static struct proto irda_proto = { | |
1091 | .name = "IRDA", | |
1092 | .owner = THIS_MODULE, | |
1093 | .obj_size = sizeof(struct irda_sock), | |
1094 | }; | |
1095 | ||
1096 | /* | |
1097 | * Function irda_create (sock, protocol) | |
1098 | * | |
1099 | * Create IrDA socket | |
1100 | * | |
1101 | */ | |
3f378b68 EP |
1102 | static int irda_create(struct net *net, struct socket *sock, int protocol, |
1103 | int kern) | |
1da177e4 LT |
1104 | { |
1105 | struct sock *sk; | |
1106 | struct irda_sock *self; | |
1107 | ||
0dc47877 | 1108 | IRDA_DEBUG(2, "%s()\n", __func__); |
1da177e4 | 1109 | |
1b8d7ae4 EB |
1110 | if (net != &init_net) |
1111 | return -EAFNOSUPPORT; | |
1112 | ||
1da177e4 LT |
1113 | /* Check for valid socket type */ |
1114 | switch (sock->type) { | |
1115 | case SOCK_STREAM: /* For TTP connections with SAR disabled */ | |
1116 | case SOCK_SEQPACKET: /* For TTP connections with SAR enabled */ | |
1117 | case SOCK_DGRAM: /* For TTP Unitdata or LMP Ultra transfers */ | |
1118 | break; | |
1119 | default: | |
1120 | return -ESOCKTNOSUPPORT; | |
1121 | } | |
1122 | ||
1123 | /* Allocate networking socket */ | |
6257ff21 | 1124 | sk = sk_alloc(net, PF_IRDA, GFP_ATOMIC, &irda_proto); |
1da177e4 LT |
1125 | if (sk == NULL) |
1126 | return -ENOMEM; | |
1127 | ||
1128 | self = irda_sk(sk); | |
0dc47877 | 1129 | IRDA_DEBUG(2, "%s() : self is %p\n", __func__, self); |
1da177e4 LT |
1130 | |
1131 | init_waitqueue_head(&self->query_wait); | |
1132 | ||
1da177e4 LT |
1133 | switch (sock->type) { |
1134 | case SOCK_STREAM: | |
1135 | sock->ops = &irda_stream_ops; | |
1136 | self->max_sdu_size_rx = TTP_SAR_DISABLE; | |
1137 | break; | |
1138 | case SOCK_SEQPACKET: | |
1139 | sock->ops = &irda_seqpacket_ops; | |
1140 | self->max_sdu_size_rx = TTP_SAR_UNBOUND; | |
1141 | break; | |
1142 | case SOCK_DGRAM: | |
1143 | switch (protocol) { | |
1144 | #ifdef CONFIG_IRDA_ULTRA | |
1145 | case IRDAPROTO_ULTRA: | |
1146 | sock->ops = &irda_ultra_ops; | |
1147 | /* Initialise now, because we may send on unbound | |
1148 | * sockets. Jean II */ | |
1149 | self->max_data_size = ULTRA_MAX_DATA - LMP_PID_HEADER; | |
1150 | self->max_header_size = IRDA_MAX_HEADER + LMP_PID_HEADER; | |
1151 | break; | |
1152 | #endif /* CONFIG_IRDA_ULTRA */ | |
1153 | case IRDAPROTO_UNITDATA: | |
1154 | sock->ops = &irda_dgram_ops; | |
1155 | /* We let Unitdata conn. be like seqpack conn. */ | |
1156 | self->max_sdu_size_rx = TTP_SAR_UNBOUND; | |
1157 | break; | |
1158 | default: | |
9ecad877 | 1159 | sk_free(sk); |
1da177e4 LT |
1160 | return -ESOCKTNOSUPPORT; |
1161 | } | |
1162 | break; | |
1163 | default: | |
9ecad877 | 1164 | sk_free(sk); |
1da177e4 LT |
1165 | return -ESOCKTNOSUPPORT; |
1166 | } | |
1167 | ||
9ecad877 PE |
1168 | /* Initialise networking socket struct */ |
1169 | sock_init_data(sock, sk); /* Note : set sk->sk_refcnt to 1 */ | |
1170 | sk->sk_family = PF_IRDA; | |
1171 | sk->sk_protocol = protocol; | |
1172 | ||
1da177e4 LT |
1173 | /* Register as a client with IrLMP */ |
1174 | self->ckey = irlmp_register_client(0, NULL, NULL, NULL); | |
1175 | self->mask.word = 0xffff; | |
1176 | self->rx_flow = self->tx_flow = FLOW_START; | |
1177 | self->nslots = DISCOVERY_DEFAULT_SLOTS; | |
1178 | self->daddr = DEV_ADDR_ANY; /* Until we get connected */ | |
1179 | self->saddr = 0x0; /* so IrLMP assign us any link */ | |
1180 | return 0; | |
1181 | } | |
1182 | ||
1183 | /* | |
1184 | * Function irda_destroy_socket (self) | |
1185 | * | |
1186 | * Destroy socket | |
1187 | * | |
1188 | */ | |
1189 | static void irda_destroy_socket(struct irda_sock *self) | |
1190 | { | |
0dc47877 | 1191 | IRDA_DEBUG(2, "%s(%p)\n", __func__, self); |
1da177e4 | 1192 | |
1da177e4 LT |
1193 | /* Unregister with IrLMP */ |
1194 | irlmp_unregister_client(self->ckey); | |
1195 | irlmp_unregister_service(self->skey); | |
1196 | ||
1197 | /* Unregister with LM-IAS */ | |
1198 | if (self->ias_obj) { | |
1199 | irias_delete_object(self->ias_obj); | |
1200 | self->ias_obj = NULL; | |
1201 | } | |
1202 | ||
1203 | if (self->iriap) { | |
1204 | iriap_close(self->iriap); | |
1205 | self->iriap = NULL; | |
1206 | } | |
1207 | ||
1208 | if (self->tsap) { | |
1209 | irttp_disconnect_request(self->tsap, NULL, P_NORMAL); | |
1210 | irttp_close_tsap(self->tsap); | |
1211 | self->tsap = NULL; | |
1212 | } | |
1213 | #ifdef CONFIG_IRDA_ULTRA | |
1214 | if (self->lsap) { | |
1215 | irlmp_close_lsap(self->lsap); | |
1216 | self->lsap = NULL; | |
1217 | } | |
1218 | #endif /* CONFIG_IRDA_ULTRA */ | |
1219 | } | |
1220 | ||
1221 | /* | |
1222 | * Function irda_release (sock) | |
1223 | */ | |
1224 | static int irda_release(struct socket *sock) | |
1225 | { | |
1226 | struct sock *sk = sock->sk; | |
1227 | ||
0dc47877 | 1228 | IRDA_DEBUG(2, "%s()\n", __func__); |
1da177e4 | 1229 | |
6819bc2e | 1230 | if (sk == NULL) |
1da177e4 LT |
1231 | return 0; |
1232 | ||
da349f1c | 1233 | lock_sock(sk); |
1da177e4 LT |
1234 | sk->sk_state = TCP_CLOSE; |
1235 | sk->sk_shutdown |= SEND_SHUTDOWN; | |
1236 | sk->sk_state_change(sk); | |
1237 | ||
1238 | /* Destroy IrDA socket */ | |
1239 | irda_destroy_socket(irda_sk(sk)); | |
1240 | ||
1241 | sock_orphan(sk); | |
1242 | sock->sk = NULL; | |
da349f1c | 1243 | release_sock(sk); |
1da177e4 LT |
1244 | |
1245 | /* Purge queues (see sock_init_data()) */ | |
1246 | skb_queue_purge(&sk->sk_receive_queue); | |
1247 | ||
1248 | /* Destroy networking socket if we are the last reference on it, | |
1249 | * i.e. if(sk->sk_refcnt == 0) -> sk_free(sk) */ | |
1250 | sock_put(sk); | |
1251 | ||
1252 | /* Notes on socket locking and deallocation... - Jean II | |
1253 | * In theory we should put pairs of sock_hold() / sock_put() to | |
1254 | * prevent the socket to be destroyed whenever there is an | |
1255 | * outstanding request or outstanding incoming packet or event. | |
1256 | * | |
1257 | * 1) This may include IAS request, both in connect and getsockopt. | |
1258 | * Unfortunately, the situation is a bit more messy than it looks, | |
1259 | * because we close iriap and kfree(self) above. | |
1260 | * | |
1261 | * 2) This may include selective discovery in getsockopt. | |
1262 | * Same stuff as above, irlmp registration and self are gone. | |
1263 | * | |
1264 | * Probably 1 and 2 may not matter, because it's all triggered | |
1265 | * by a process and the socket layer already prevent the | |
1266 | * socket to go away while a process is holding it, through | |
1267 | * sockfd_put() and fput()... | |
1268 | * | |
1269 | * 3) This may include deferred TSAP closure. In particular, | |
1270 | * we may receive a late irda_disconnect_indication() | |
1271 | * Fortunately, (tsap_cb *)->close_pend should protect us | |
1272 | * from that. | |
1273 | * | |
1274 | * I did some testing on SMP, and it looks solid. And the socket | |
1275 | * memory leak is now gone... - Jean II | |
1276 | */ | |
1277 | ||
6819bc2e | 1278 | return 0; |
1da177e4 LT |
1279 | } |
1280 | ||
1281 | /* | |
1282 | * Function irda_sendmsg (iocb, sock, msg, len) | |
1283 | * | |
1284 | * Send message down to TinyTP. This function is used for both STREAM and | |
1285 | * SEQPACK services. This is possible since it forces the client to | |
1286 | * fragment the message if necessary | |
1287 | */ | |
1288 | static int irda_sendmsg(struct kiocb *iocb, struct socket *sock, | |
1289 | struct msghdr *msg, size_t len) | |
1290 | { | |
1291 | struct sock *sk = sock->sk; | |
1292 | struct irda_sock *self; | |
1293 | struct sk_buff *skb; | |
bcb5e0ee | 1294 | int err = -EPIPE; |
1da177e4 | 1295 | |
0dc47877 | 1296 | IRDA_DEBUG(4, "%s(), len=%zd\n", __func__, len); |
1da177e4 LT |
1297 | |
1298 | /* Note : socket.c set MSG_EOR on SEQPACKET sockets */ | |
bcb5e0ee | 1299 | if (msg->msg_flags & ~(MSG_DONTWAIT | MSG_EOR | MSG_CMSG_COMPAT | |
58a9d732 AB |
1300 | MSG_NOSIGNAL)) { |
1301 | err = -EINVAL; | |
1302 | goto out; | |
1303 | } | |
1da177e4 | 1304 | |
5b40964e SO |
1305 | lock_sock(sk); |
1306 | ||
bcb5e0ee SO |
1307 | if (sk->sk_shutdown & SEND_SHUTDOWN) |
1308 | goto out_err; | |
1da177e4 | 1309 | |
58a9d732 AB |
1310 | if (sk->sk_state != TCP_ESTABLISHED) { |
1311 | err = -ENOTCONN; | |
1312 | goto out; | |
1313 | } | |
1da177e4 LT |
1314 | |
1315 | self = irda_sk(sk); | |
1da177e4 LT |
1316 | |
1317 | /* Check if IrTTP is wants us to slow down */ | |
1318 | ||
aa395145 | 1319 | if (wait_event_interruptible(*(sk_sleep(sk)), |
58a9d732 AB |
1320 | (self->tx_flow != FLOW_STOP || sk->sk_state != TCP_ESTABLISHED))) { |
1321 | err = -ERESTARTSYS; | |
1322 | goto out; | |
1323 | } | |
1da177e4 LT |
1324 | |
1325 | /* Check if we are still connected */ | |
58a9d732 AB |
1326 | if (sk->sk_state != TCP_ESTABLISHED) { |
1327 | err = -ENOTCONN; | |
1328 | goto out; | |
1329 | } | |
1da177e4 | 1330 | |
7f927fcc | 1331 | /* Check that we don't send out too big frames */ |
1da177e4 LT |
1332 | if (len > self->max_data_size) { |
1333 | IRDA_DEBUG(2, "%s(), Chopping frame from %zd to %d bytes!\n", | |
0dc47877 | 1334 | __func__, len, self->max_data_size); |
1da177e4 LT |
1335 | len = self->max_data_size; |
1336 | } | |
1337 | ||
6819bc2e | 1338 | skb = sock_alloc_send_skb(sk, len + self->max_header_size + 16, |
1da177e4 LT |
1339 | msg->msg_flags & MSG_DONTWAIT, &err); |
1340 | if (!skb) | |
bcb5e0ee | 1341 | goto out_err; |
1da177e4 LT |
1342 | |
1343 | skb_reserve(skb, self->max_header_size + 16); | |
eeeb0374 ACM |
1344 | skb_reset_transport_header(skb); |
1345 | skb_put(skb, len); | |
1346 | err = memcpy_fromiovec(skb_transport_header(skb), msg->msg_iov, len); | |
1da177e4 LT |
1347 | if (err) { |
1348 | kfree_skb(skb); | |
bcb5e0ee | 1349 | goto out_err; |
1da177e4 LT |
1350 | } |
1351 | ||
1352 | /* | |
1353 | * Just send the message to TinyTP, and let it deal with possible | |
1354 | * errors. No need to duplicate all that here | |
1355 | */ | |
1356 | err = irttp_data_request(self->tsap, skb); | |
1357 | if (err) { | |
0dc47877 | 1358 | IRDA_DEBUG(0, "%s(), err=%d\n", __func__, err); |
bcb5e0ee | 1359 | goto out_err; |
1da177e4 | 1360 | } |
58a9d732 | 1361 | |
5b40964e | 1362 | release_sock(sk); |
1da177e4 LT |
1363 | /* Tell client how much data we actually sent */ |
1364 | return len; | |
bcb5e0ee | 1365 | |
58a9d732 AB |
1366 | out_err: |
1367 | err = sk_stream_error(sk, msg->msg_flags, err); | |
1368 | out: | |
5b40964e | 1369 | release_sock(sk); |
58a9d732 | 1370 | return err; |
bcb5e0ee | 1371 | |
1da177e4 LT |
1372 | } |
1373 | ||
1374 | /* | |
1375 | * Function irda_recvmsg_dgram (iocb, sock, msg, size, flags) | |
1376 | * | |
1377 | * Try to receive message and copy it to user. The frame is discarded | |
1378 | * after being read, regardless of how much the user actually read | |
1379 | */ | |
1380 | static int irda_recvmsg_dgram(struct kiocb *iocb, struct socket *sock, | |
1381 | struct msghdr *msg, size_t size, int flags) | |
1382 | { | |
1383 | struct sock *sk = sock->sk; | |
1384 | struct irda_sock *self = irda_sk(sk); | |
1385 | struct sk_buff *skb; | |
1386 | size_t copied; | |
1387 | int err; | |
1388 | ||
0dc47877 | 1389 | IRDA_DEBUG(4, "%s()\n", __func__); |
1da177e4 | 1390 | |
1da177e4 LT |
1391 | skb = skb_recv_datagram(sk, flags & ~MSG_DONTWAIT, |
1392 | flags & MSG_DONTWAIT, &err); | |
1393 | if (!skb) | |
5b40964e | 1394 | return err; |
1da177e4 | 1395 | |
badff6d0 ACM |
1396 | skb_reset_transport_header(skb); |
1397 | copied = skb->len; | |
1da177e4 LT |
1398 | |
1399 | if (copied > size) { | |
1400 | IRDA_DEBUG(2, "%s(), Received truncated frame (%zd < %zd)!\n", | |
0dc47877 | 1401 | __func__, copied, size); |
1da177e4 LT |
1402 | copied = size; |
1403 | msg->msg_flags |= MSG_TRUNC; | |
1404 | } | |
1405 | skb_copy_datagram_iovec(skb, 0, msg->msg_iov, copied); | |
1406 | ||
1407 | skb_free_datagram(sk, skb); | |
1408 | ||
1409 | /* | |
1410 | * Check if we have previously stopped IrTTP and we know | |
1411 | * have more free space in our rx_queue. If so tell IrTTP | |
1412 | * to start delivering frames again before our rx_queue gets | |
1413 | * empty | |
1414 | */ | |
1415 | if (self->rx_flow == FLOW_STOP) { | |
1416 | if ((atomic_read(&sk->sk_rmem_alloc) << 2) <= sk->sk_rcvbuf) { | |
0dc47877 | 1417 | IRDA_DEBUG(2, "%s(), Starting IrTTP\n", __func__); |
1da177e4 LT |
1418 | self->rx_flow = FLOW_START; |
1419 | irttp_flow_request(self->tsap, FLOW_START); | |
1420 | } | |
1421 | } | |
58a9d732 | 1422 | |
5b40964e | 1423 | return copied; |
1da177e4 LT |
1424 | } |
1425 | ||
1426 | /* | |
1427 | * Function irda_recvmsg_stream (iocb, sock, msg, size, flags) | |
1428 | */ | |
1429 | static int irda_recvmsg_stream(struct kiocb *iocb, struct socket *sock, | |
1430 | struct msghdr *msg, size_t size, int flags) | |
1431 | { | |
1432 | struct sock *sk = sock->sk; | |
1433 | struct irda_sock *self = irda_sk(sk); | |
1434 | int noblock = flags & MSG_DONTWAIT; | |
1435 | size_t copied = 0; | |
6e66aa15 | 1436 | int target, err; |
305f2aa1 | 1437 | long timeo; |
1da177e4 | 1438 | |
0dc47877 | 1439 | IRDA_DEBUG(3, "%s()\n", __func__); |
1da177e4 | 1440 | |
6e66aa15 | 1441 | if ((err = sock_error(sk)) < 0) |
5b40964e | 1442 | return err; |
1da177e4 LT |
1443 | |
1444 | if (sock->flags & __SO_ACCEPTCON) | |
5b40964e | 1445 | return -EINVAL; |
1da177e4 | 1446 | |
58a9d732 | 1447 | err =-EOPNOTSUPP; |
1da177e4 | 1448 | if (flags & MSG_OOB) |
5b40964e | 1449 | return -EOPNOTSUPP; |
1da177e4 | 1450 | |
58a9d732 | 1451 | err = 0; |
305f2aa1 OK |
1452 | target = sock_rcvlowat(sk, flags & MSG_WAITALL, size); |
1453 | timeo = sock_rcvtimeo(sk, noblock); | |
1da177e4 LT |
1454 | |
1455 | msg->msg_namelen = 0; | |
1456 | ||
1457 | do { | |
1458 | int chunk; | |
1459 | struct sk_buff *skb = skb_dequeue(&sk->sk_receive_queue); | |
1460 | ||
305f2aa1 OK |
1461 | if (skb == NULL) { |
1462 | DEFINE_WAIT(wait); | |
58a9d732 | 1463 | err = 0; |
1da177e4 LT |
1464 | |
1465 | if (copied >= target) | |
1466 | break; | |
1467 | ||
aa395145 | 1468 | prepare_to_wait_exclusive(sk_sleep(sk), &wait, TASK_INTERRUPTIBLE); |
1da177e4 LT |
1469 | |
1470 | /* | |
1471 | * POSIX 1003.1g mandates this order. | |
1472 | */ | |
58a9d732 AB |
1473 | err = sock_error(sk); |
1474 | if (err) | |
bfb6709d | 1475 | ; |
1da177e4 LT |
1476 | else if (sk->sk_shutdown & RCV_SHUTDOWN) |
1477 | ; | |
1478 | else if (noblock) | |
58a9d732 | 1479 | err = -EAGAIN; |
1da177e4 | 1480 | else if (signal_pending(current)) |
58a9d732 | 1481 | err = sock_intr_errno(timeo); |
305f2aa1 | 1482 | else if (sk->sk_state != TCP_ESTABLISHED) |
58a9d732 | 1483 | err = -ENOTCONN; |
1da177e4 LT |
1484 | else if (skb_peek(&sk->sk_receive_queue) == NULL) |
1485 | /* Wait process until data arrives */ | |
1486 | schedule(); | |
1487 | ||
aa395145 | 1488 | finish_wait(sk_sleep(sk), &wait); |
1da177e4 | 1489 | |
58a9d732 | 1490 | if (err) |
5b40964e | 1491 | return err; |
1da177e4 LT |
1492 | if (sk->sk_shutdown & RCV_SHUTDOWN) |
1493 | break; | |
1494 | ||
1495 | continue; | |
1496 | } | |
1497 | ||
1498 | chunk = min_t(unsigned int, skb->len, size); | |
1499 | if (memcpy_toiovec(msg->msg_iov, skb->data, chunk)) { | |
1500 | skb_queue_head(&sk->sk_receive_queue, skb); | |
1501 | if (copied == 0) | |
1502 | copied = -EFAULT; | |
1503 | break; | |
1504 | } | |
1505 | copied += chunk; | |
1506 | size -= chunk; | |
1507 | ||
1508 | /* Mark read part of skb as used */ | |
1509 | if (!(flags & MSG_PEEK)) { | |
1510 | skb_pull(skb, chunk); | |
1511 | ||
1512 | /* put the skb back if we didn't use it up.. */ | |
1513 | if (skb->len) { | |
1514 | IRDA_DEBUG(1, "%s(), back on q!\n", | |
0dc47877 | 1515 | __func__); |
1da177e4 LT |
1516 | skb_queue_head(&sk->sk_receive_queue, skb); |
1517 | break; | |
1518 | } | |
1519 | ||
1520 | kfree_skb(skb); | |
1521 | } else { | |
0dc47877 | 1522 | IRDA_DEBUG(0, "%s() questionable!?\n", __func__); |
1da177e4 LT |
1523 | |
1524 | /* put message back and return */ | |
1525 | skb_queue_head(&sk->sk_receive_queue, skb); | |
1526 | break; | |
1527 | } | |
1528 | } while (size); | |
1529 | ||
1530 | /* | |
1531 | * Check if we have previously stopped IrTTP and we know | |
1532 | * have more free space in our rx_queue. If so tell IrTTP | |
1533 | * to start delivering frames again before our rx_queue gets | |
1534 | * empty | |
1535 | */ | |
1536 | if (self->rx_flow == FLOW_STOP) { | |
1537 | if ((atomic_read(&sk->sk_rmem_alloc) << 2) <= sk->sk_rcvbuf) { | |
0dc47877 | 1538 | IRDA_DEBUG(2, "%s(), Starting IrTTP\n", __func__); |
1da177e4 LT |
1539 | self->rx_flow = FLOW_START; |
1540 | irttp_flow_request(self->tsap, FLOW_START); | |
1541 | } | |
1542 | } | |
1543 | ||
5b40964e | 1544 | return copied; |
1da177e4 LT |
1545 | } |
1546 | ||
1547 | /* | |
1548 | * Function irda_sendmsg_dgram (iocb, sock, msg, len) | |
1549 | * | |
1550 | * Send message down to TinyTP for the unreliable sequenced | |
1551 | * packet service... | |
1552 | * | |
1553 | */ | |
1554 | static int irda_sendmsg_dgram(struct kiocb *iocb, struct socket *sock, | |
1555 | struct msghdr *msg, size_t len) | |
1556 | { | |
1557 | struct sock *sk = sock->sk; | |
1558 | struct irda_sock *self; | |
1559 | struct sk_buff *skb; | |
1da177e4 LT |
1560 | int err; |
1561 | ||
0dc47877 | 1562 | IRDA_DEBUG(4, "%s(), len=%zd\n", __func__, len); |
1da177e4 LT |
1563 | |
1564 | if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_CMSG_COMPAT)) | |
5b40964e SO |
1565 | return -EINVAL; |
1566 | ||
1567 | lock_sock(sk); | |
1da177e4 LT |
1568 | |
1569 | if (sk->sk_shutdown & SEND_SHUTDOWN) { | |
1570 | send_sig(SIGPIPE, current, 0); | |
58a9d732 AB |
1571 | err = -EPIPE; |
1572 | goto out; | |
1da177e4 LT |
1573 | } |
1574 | ||
58a9d732 | 1575 | err = -ENOTCONN; |
1da177e4 | 1576 | if (sk->sk_state != TCP_ESTABLISHED) |
58a9d732 | 1577 | goto out; |
1da177e4 LT |
1578 | |
1579 | self = irda_sk(sk); | |
1da177e4 LT |
1580 | |
1581 | /* | |
7f927fcc | 1582 | * Check that we don't send out too big frames. This is an unreliable |
1da177e4 LT |
1583 | * service, so we have no fragmentation and no coalescence |
1584 | */ | |
1585 | if (len > self->max_data_size) { | |
1586 | IRDA_DEBUG(0, "%s(), Warning to much data! " | |
1587 | "Chopping frame from %zd to %d bytes!\n", | |
0dc47877 | 1588 | __func__, len, self->max_data_size); |
1da177e4 LT |
1589 | len = self->max_data_size; |
1590 | } | |
1591 | ||
1592 | skb = sock_alloc_send_skb(sk, len + self->max_header_size, | |
1593 | msg->msg_flags & MSG_DONTWAIT, &err); | |
58a9d732 | 1594 | err = -ENOBUFS; |
1da177e4 | 1595 | if (!skb) |
58a9d732 | 1596 | goto out; |
1da177e4 LT |
1597 | |
1598 | skb_reserve(skb, self->max_header_size); | |
eeeb0374 | 1599 | skb_reset_transport_header(skb); |
1da177e4 | 1600 | |
0dc47877 | 1601 | IRDA_DEBUG(4, "%s(), appending user data\n", __func__); |
eeeb0374 ACM |
1602 | skb_put(skb, len); |
1603 | err = memcpy_fromiovec(skb_transport_header(skb), msg->msg_iov, len); | |
1da177e4 LT |
1604 | if (err) { |
1605 | kfree_skb(skb); | |
58a9d732 | 1606 | goto out; |
1da177e4 LT |
1607 | } |
1608 | ||
1609 | /* | |
1610 | * Just send the message to TinyTP, and let it deal with possible | |
1611 | * errors. No need to duplicate all that here | |
1612 | */ | |
1613 | err = irttp_udata_request(self->tsap, skb); | |
1614 | if (err) { | |
0dc47877 | 1615 | IRDA_DEBUG(0, "%s(), err=%d\n", __func__, err); |
58a9d732 | 1616 | goto out; |
1da177e4 | 1617 | } |
5b40964e SO |
1618 | |
1619 | release_sock(sk); | |
1da177e4 | 1620 | return len; |
5b40964e | 1621 | |
58a9d732 | 1622 | out: |
5b40964e | 1623 | release_sock(sk); |
58a9d732 | 1624 | return err; |
1da177e4 LT |
1625 | } |
1626 | ||
1627 | /* | |
1628 | * Function irda_sendmsg_ultra (iocb, sock, msg, len) | |
1629 | * | |
1630 | * Send message down to IrLMP for the unreliable Ultra | |
1631 | * packet service... | |
1632 | */ | |
1633 | #ifdef CONFIG_IRDA_ULTRA | |
1634 | static int irda_sendmsg_ultra(struct kiocb *iocb, struct socket *sock, | |
1635 | struct msghdr *msg, size_t len) | |
1636 | { | |
1637 | struct sock *sk = sock->sk; | |
1638 | struct irda_sock *self; | |
1639 | __u8 pid = 0; | |
1640 | int bound = 0; | |
1641 | struct sk_buff *skb; | |
1da177e4 LT |
1642 | int err; |
1643 | ||
0dc47877 | 1644 | IRDA_DEBUG(4, "%s(), len=%zd\n", __func__, len); |
1da177e4 | 1645 | |
58a9d732 | 1646 | err = -EINVAL; |
1da177e4 | 1647 | if (msg->msg_flags & ~(MSG_DONTWAIT|MSG_CMSG_COMPAT)) |
5b40964e SO |
1648 | return -EINVAL; |
1649 | ||
1650 | lock_sock(sk); | |
1da177e4 | 1651 | |
58a9d732 | 1652 | err = -EPIPE; |
1da177e4 LT |
1653 | if (sk->sk_shutdown & SEND_SHUTDOWN) { |
1654 | send_sig(SIGPIPE, current, 0); | |
58a9d732 | 1655 | goto out; |
1da177e4 LT |
1656 | } |
1657 | ||
1658 | self = irda_sk(sk); | |
1da177e4 LT |
1659 | |
1660 | /* Check if an address was specified with sendto. Jean II */ | |
1661 | if (msg->msg_name) { | |
1662 | struct sockaddr_irda *addr = (struct sockaddr_irda *) msg->msg_name; | |
58a9d732 | 1663 | err = -EINVAL; |
1da177e4 LT |
1664 | /* Check address, extract pid. Jean II */ |
1665 | if (msg->msg_namelen < sizeof(*addr)) | |
58a9d732 | 1666 | goto out; |
1da177e4 | 1667 | if (addr->sir_family != AF_IRDA) |
58a9d732 | 1668 | goto out; |
1da177e4 LT |
1669 | |
1670 | pid = addr->sir_lsap_sel; | |
1671 | if (pid & 0x80) { | |
0dc47877 | 1672 | IRDA_DEBUG(0, "%s(), extension in PID not supp!\n", __func__); |
58a9d732 AB |
1673 | err = -EOPNOTSUPP; |
1674 | goto out; | |
1da177e4 LT |
1675 | } |
1676 | } else { | |
1677 | /* Check that the socket is properly bound to an Ultra | |
1678 | * port. Jean II */ | |
1679 | if ((self->lsap == NULL) || | |
1680 | (sk->sk_state != TCP_ESTABLISHED)) { | |
1681 | IRDA_DEBUG(0, "%s(), socket not bound to Ultra PID.\n", | |
0dc47877 | 1682 | __func__); |
58a9d732 AB |
1683 | err = -ENOTCONN; |
1684 | goto out; | |
1da177e4 LT |
1685 | } |
1686 | /* Use PID from socket */ | |
1687 | bound = 1; | |
1688 | } | |
1689 | ||
1690 | /* | |
7f927fcc | 1691 | * Check that we don't send out too big frames. This is an unreliable |
1da177e4 LT |
1692 | * service, so we have no fragmentation and no coalescence |
1693 | */ | |
1694 | if (len > self->max_data_size) { | |
1695 | IRDA_DEBUG(0, "%s(), Warning to much data! " | |
1696 | "Chopping frame from %zd to %d bytes!\n", | |
0dc47877 | 1697 | __func__, len, self->max_data_size); |
1da177e4 LT |
1698 | len = self->max_data_size; |
1699 | } | |
1700 | ||
1701 | skb = sock_alloc_send_skb(sk, len + self->max_header_size, | |
1702 | msg->msg_flags & MSG_DONTWAIT, &err); | |
58a9d732 | 1703 | err = -ENOBUFS; |
1da177e4 | 1704 | if (!skb) |
58a9d732 | 1705 | goto out; |
1da177e4 LT |
1706 | |
1707 | skb_reserve(skb, self->max_header_size); | |
eeeb0374 | 1708 | skb_reset_transport_header(skb); |
1da177e4 | 1709 | |
0dc47877 | 1710 | IRDA_DEBUG(4, "%s(), appending user data\n", __func__); |
eeeb0374 ACM |
1711 | skb_put(skb, len); |
1712 | err = memcpy_fromiovec(skb_transport_header(skb), msg->msg_iov, len); | |
1da177e4 LT |
1713 | if (err) { |
1714 | kfree_skb(skb); | |
58a9d732 | 1715 | goto out; |
1da177e4 LT |
1716 | } |
1717 | ||
1718 | err = irlmp_connless_data_request((bound ? self->lsap : NULL), | |
1719 | skb, pid); | |
58a9d732 | 1720 | if (err) |
0dc47877 | 1721 | IRDA_DEBUG(0, "%s(), err=%d\n", __func__, err); |
58a9d732 | 1722 | out: |
5b40964e | 1723 | release_sock(sk); |
58a9d732 | 1724 | return err ? : len; |
1da177e4 LT |
1725 | } |
1726 | #endif /* CONFIG_IRDA_ULTRA */ | |
1727 | ||
1728 | /* | |
1729 | * Function irda_shutdown (sk, how) | |
1730 | */ | |
1731 | static int irda_shutdown(struct socket *sock, int how) | |
1732 | { | |
1733 | struct sock *sk = sock->sk; | |
1734 | struct irda_sock *self = irda_sk(sk); | |
1735 | ||
0dc47877 | 1736 | IRDA_DEBUG(1, "%s(%p)\n", __func__, self); |
1da177e4 | 1737 | |
5b40964e | 1738 | lock_sock(sk); |
58a9d732 | 1739 | |
1da177e4 LT |
1740 | sk->sk_state = TCP_CLOSE; |
1741 | sk->sk_shutdown |= SEND_SHUTDOWN; | |
1742 | sk->sk_state_change(sk); | |
1743 | ||
1744 | if (self->iriap) { | |
1745 | iriap_close(self->iriap); | |
1746 | self->iriap = NULL; | |
1747 | } | |
1748 | ||
1749 | if (self->tsap) { | |
1750 | irttp_disconnect_request(self->tsap, NULL, P_NORMAL); | |
1751 | irttp_close_tsap(self->tsap); | |
1752 | self->tsap = NULL; | |
1753 | } | |
1754 | ||
1755 | /* A few cleanup so the socket look as good as new... */ | |
1756 | self->rx_flow = self->tx_flow = FLOW_START; /* needed ??? */ | |
1757 | self->daddr = DEV_ADDR_ANY; /* Until we get re-connected */ | |
1758 | self->saddr = 0x0; /* so IrLMP assign us any link */ | |
1759 | ||
5b40964e | 1760 | release_sock(sk); |
58a9d732 | 1761 | |
6819bc2e | 1762 | return 0; |
1da177e4 LT |
1763 | } |
1764 | ||
1765 | /* | |
1766 | * Function irda_poll (file, sock, wait) | |
1767 | */ | |
1768 | static unsigned int irda_poll(struct file * file, struct socket *sock, | |
1769 | poll_table *wait) | |
1770 | { | |
1771 | struct sock *sk = sock->sk; | |
1772 | struct irda_sock *self = irda_sk(sk); | |
1773 | unsigned int mask; | |
1774 | ||
0dc47877 | 1775 | IRDA_DEBUG(4, "%s()\n", __func__); |
1da177e4 | 1776 | |
aa395145 | 1777 | poll_wait(file, sk_sleep(sk), wait); |
1da177e4 LT |
1778 | mask = 0; |
1779 | ||
1780 | /* Exceptional events? */ | |
1781 | if (sk->sk_err) | |
1782 | mask |= POLLERR; | |
1783 | if (sk->sk_shutdown & RCV_SHUTDOWN) { | |
0dc47877 | 1784 | IRDA_DEBUG(0, "%s(), POLLHUP\n", __func__); |
1da177e4 LT |
1785 | mask |= POLLHUP; |
1786 | } | |
1787 | ||
1788 | /* Readable? */ | |
1789 | if (!skb_queue_empty(&sk->sk_receive_queue)) { | |
1790 | IRDA_DEBUG(4, "Socket is readable\n"); | |
1791 | mask |= POLLIN | POLLRDNORM; | |
1792 | } | |
1793 | ||
1794 | /* Connection-based need to check for termination and startup */ | |
1795 | switch (sk->sk_type) { | |
1796 | case SOCK_STREAM: | |
1797 | if (sk->sk_state == TCP_CLOSE) { | |
0dc47877 | 1798 | IRDA_DEBUG(0, "%s(), POLLHUP\n", __func__); |
1da177e4 LT |
1799 | mask |= POLLHUP; |
1800 | } | |
1801 | ||
1802 | if (sk->sk_state == TCP_ESTABLISHED) { | |
1803 | if ((self->tx_flow == FLOW_START) && | |
1804 | sock_writeable(sk)) | |
1805 | { | |
1806 | mask |= POLLOUT | POLLWRNORM | POLLWRBAND; | |
1807 | } | |
1808 | } | |
1809 | break; | |
1810 | case SOCK_SEQPACKET: | |
1811 | if ((self->tx_flow == FLOW_START) && | |
1812 | sock_writeable(sk)) | |
1813 | { | |
1814 | mask |= POLLOUT | POLLWRNORM | POLLWRBAND; | |
1815 | } | |
1816 | break; | |
1817 | case SOCK_DGRAM: | |
1818 | if (sock_writeable(sk)) | |
1819 | mask |= POLLOUT | POLLWRNORM | POLLWRBAND; | |
1820 | break; | |
1821 | default: | |
1822 | break; | |
1823 | } | |
1da177e4 | 1824 | |
5b40964e | 1825 | return mask; |
58a9d732 AB |
1826 | } |
1827 | ||
1da177e4 LT |
1828 | /* |
1829 | * Function irda_ioctl (sock, cmd, arg) | |
1830 | */ | |
1831 | static int irda_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
1832 | { | |
1833 | struct sock *sk = sock->sk; | |
58a9d732 | 1834 | int err; |
1da177e4 | 1835 | |
0dc47877 | 1836 | IRDA_DEBUG(4, "%s(), cmd=%#x\n", __func__, cmd); |
1da177e4 | 1837 | |
58a9d732 | 1838 | err = -EINVAL; |
1da177e4 LT |
1839 | switch (cmd) { |
1840 | case TIOCOUTQ: { | |
1841 | long amount; | |
31e6d363 ED |
1842 | |
1843 | amount = sk->sk_sndbuf - sk_wmem_alloc_get(sk); | |
1da177e4 LT |
1844 | if (amount < 0) |
1845 | amount = 0; | |
58a9d732 AB |
1846 | err = put_user(amount, (unsigned int __user *)arg); |
1847 | break; | |
1da177e4 LT |
1848 | } |
1849 | ||
1850 | case TIOCINQ: { | |
1851 | struct sk_buff *skb; | |
1852 | long amount = 0L; | |
1853 | /* These two are safe on a single CPU system as only user tasks fiddle here */ | |
1854 | if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL) | |
1855 | amount = skb->len; | |
58a9d732 AB |
1856 | err = put_user(amount, (unsigned int __user *)arg); |
1857 | break; | |
1da177e4 LT |
1858 | } |
1859 | ||
1860 | case SIOCGSTAMP: | |
1861 | if (sk != NULL) | |
58a9d732 AB |
1862 | err = sock_get_timestamp(sk, (struct timeval __user *)arg); |
1863 | break; | |
1da177e4 LT |
1864 | |
1865 | case SIOCGIFADDR: | |
1866 | case SIOCSIFADDR: | |
1867 | case SIOCGIFDSTADDR: | |
1868 | case SIOCSIFDSTADDR: | |
1869 | case SIOCGIFBRDADDR: | |
1870 | case SIOCSIFBRDADDR: | |
1871 | case SIOCGIFNETMASK: | |
1872 | case SIOCSIFNETMASK: | |
1873 | case SIOCGIFMETRIC: | |
1874 | case SIOCSIFMETRIC: | |
58a9d732 | 1875 | break; |
1da177e4 | 1876 | default: |
0dc47877 | 1877 | IRDA_DEBUG(1, "%s(), doing device ioctl!\n", __func__); |
58a9d732 | 1878 | err = -ENOIOCTLCMD; |
1da177e4 LT |
1879 | } |
1880 | ||
58a9d732 | 1881 | return err; |
1da177e4 LT |
1882 | } |
1883 | ||
f6c90b71 PV |
1884 | #ifdef CONFIG_COMPAT |
1885 | /* | |
1886 | * Function irda_ioctl (sock, cmd, arg) | |
1887 | */ | |
1888 | static int irda_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg) | |
1889 | { | |
1890 | /* | |
1891 | * All IRDA's ioctl are standard ones. | |
1892 | */ | |
1893 | return -ENOIOCTLCMD; | |
1894 | } | |
1895 | #endif | |
1896 | ||
1da177e4 LT |
1897 | /* |
1898 | * Function irda_setsockopt (sock, level, optname, optval, optlen) | |
1899 | * | |
1900 | * Set some options for the socket | |
1901 | * | |
1902 | */ | |
5b40964e | 1903 | static int irda_setsockopt(struct socket *sock, int level, int optname, |
b7058842 | 1904 | char __user *optval, unsigned int optlen) |
1da177e4 LT |
1905 | { |
1906 | struct sock *sk = sock->sk; | |
1907 | struct irda_sock *self = irda_sk(sk); | |
1908 | struct irda_ias_set *ias_opt; | |
1909 | struct ias_object *ias_obj; | |
1910 | struct ias_attrib * ias_attr; /* Attribute in IAS object */ | |
5b40964e | 1911 | int opt, free_ias = 0, err = 0; |
1da177e4 | 1912 | |
0dc47877 | 1913 | IRDA_DEBUG(2, "%s(%p)\n", __func__, self); |
1da177e4 LT |
1914 | |
1915 | if (level != SOL_IRLMP) | |
1916 | return -ENOPROTOOPT; | |
1917 | ||
5b40964e SO |
1918 | lock_sock(sk); |
1919 | ||
1da177e4 LT |
1920 | switch (optname) { |
1921 | case IRLMP_IAS_SET: | |
1922 | /* The user want to add an attribute to an existing IAS object | |
1923 | * (in the IAS database) or to create a new object with this | |
1924 | * attribute. | |
1925 | * We first query IAS to know if the object exist, and then | |
1926 | * create the right attribute... | |
1927 | */ | |
1928 | ||
5b40964e SO |
1929 | if (optlen != sizeof(struct irda_ias_set)) { |
1930 | err = -EINVAL; | |
1931 | goto out; | |
1932 | } | |
1da177e4 LT |
1933 | |
1934 | ias_opt = kmalloc(sizeof(struct irda_ias_set), GFP_ATOMIC); | |
5b40964e SO |
1935 | if (ias_opt == NULL) { |
1936 | err = -ENOMEM; | |
1937 | goto out; | |
1938 | } | |
1da177e4 LT |
1939 | |
1940 | /* Copy query to the driver. */ | |
1941 | if (copy_from_user(ias_opt, optval, optlen)) { | |
1942 | kfree(ias_opt); | |
5b40964e SO |
1943 | err = -EFAULT; |
1944 | goto out; | |
1da177e4 LT |
1945 | } |
1946 | ||
1947 | /* Find the object we target. | |
1948 | * If the user gives us an empty string, we use the object | |
1949 | * associated with this socket. This will workaround | |
1950 | * duplicated class name - Jean II */ | |
1951 | if(ias_opt->irda_class_name[0] == '\0') { | |
1952 | if(self->ias_obj == NULL) { | |
1953 | kfree(ias_opt); | |
5b40964e SO |
1954 | err = -EINVAL; |
1955 | goto out; | |
1da177e4 LT |
1956 | } |
1957 | ias_obj = self->ias_obj; | |
1958 | } else | |
1959 | ias_obj = irias_find_object(ias_opt->irda_class_name); | |
1960 | ||
1961 | /* Only ROOT can mess with the global IAS database. | |
1962 | * Users can only add attributes to the object associated | |
1963 | * with the socket they own - Jean II */ | |
1964 | if((!capable(CAP_NET_ADMIN)) && | |
1965 | ((ias_obj == NULL) || (ias_obj != self->ias_obj))) { | |
1966 | kfree(ias_opt); | |
5b40964e SO |
1967 | err = -EPERM; |
1968 | goto out; | |
1da177e4 LT |
1969 | } |
1970 | ||
1971 | /* If the object doesn't exist, create it */ | |
1972 | if(ias_obj == (struct ias_object *) NULL) { | |
1973 | /* Create a new object */ | |
1974 | ias_obj = irias_new_object(ias_opt->irda_class_name, | |
1975 | jiffies); | |
61e44b48 JJ |
1976 | if (ias_obj == NULL) { |
1977 | kfree(ias_opt); | |
5b40964e SO |
1978 | err = -ENOMEM; |
1979 | goto out; | |
61e44b48 JJ |
1980 | } |
1981 | free_ias = 1; | |
1da177e4 LT |
1982 | } |
1983 | ||
1984 | /* Do we have the attribute already ? */ | |
1985 | if(irias_find_attrib(ias_obj, ias_opt->irda_attrib_name)) { | |
1986 | kfree(ias_opt); | |
61e44b48 JJ |
1987 | if (free_ias) { |
1988 | kfree(ias_obj->name); | |
1989 | kfree(ias_obj); | |
1990 | } | |
5b40964e SO |
1991 | err = -EINVAL; |
1992 | goto out; | |
1da177e4 LT |
1993 | } |
1994 | ||
1995 | /* Look at the type */ | |
1996 | switch(ias_opt->irda_attrib_type) { | |
1997 | case IAS_INTEGER: | |
1998 | /* Add an integer attribute */ | |
1999 | irias_add_integer_attrib( | |
2000 | ias_obj, | |
2001 | ias_opt->irda_attrib_name, | |
2002 | ias_opt->attribute.irda_attrib_int, | |
2003 | IAS_USER_ATTR); | |
2004 | break; | |
2005 | case IAS_OCT_SEQ: | |
2006 | /* Check length */ | |
2007 | if(ias_opt->attribute.irda_attrib_octet_seq.len > | |
2008 | IAS_MAX_OCTET_STRING) { | |
2009 | kfree(ias_opt); | |
61e44b48 JJ |
2010 | if (free_ias) { |
2011 | kfree(ias_obj->name); | |
2012 | kfree(ias_obj); | |
2013 | } | |
2014 | ||
5b40964e SO |
2015 | err = -EINVAL; |
2016 | goto out; | |
1da177e4 LT |
2017 | } |
2018 | /* Add an octet sequence attribute */ | |
2019 | irias_add_octseq_attrib( | |
2020 | ias_obj, | |
2021 | ias_opt->irda_attrib_name, | |
2022 | ias_opt->attribute.irda_attrib_octet_seq.octet_seq, | |
2023 | ias_opt->attribute.irda_attrib_octet_seq.len, | |
2024 | IAS_USER_ATTR); | |
2025 | break; | |
2026 | case IAS_STRING: | |
2027 | /* Should check charset & co */ | |
2028 | /* Check length */ | |
2029 | /* The length is encoded in a __u8, and | |
2030 | * IAS_MAX_STRING == 256, so there is no way | |
2031 | * userspace can pass us a string too large. | |
2032 | * Jean II */ | |
2033 | /* NULL terminate the string (avoid troubles) */ | |
2034 | ias_opt->attribute.irda_attrib_string.string[ias_opt->attribute.irda_attrib_string.len] = '\0'; | |
2035 | /* Add a string attribute */ | |
2036 | irias_add_string_attrib( | |
2037 | ias_obj, | |
2038 | ias_opt->irda_attrib_name, | |
2039 | ias_opt->attribute.irda_attrib_string.string, | |
2040 | IAS_USER_ATTR); | |
2041 | break; | |
2042 | default : | |
2043 | kfree(ias_opt); | |
61e44b48 JJ |
2044 | if (free_ias) { |
2045 | kfree(ias_obj->name); | |
2046 | kfree(ias_obj); | |
2047 | } | |
5b40964e SO |
2048 | err = -EINVAL; |
2049 | goto out; | |
1da177e4 LT |
2050 | } |
2051 | irias_insert_object(ias_obj); | |
2052 | kfree(ias_opt); | |
2053 | break; | |
2054 | case IRLMP_IAS_DEL: | |
2055 | /* The user want to delete an object from our local IAS | |
2056 | * database. We just need to query the IAS, check is the | |
2057 | * object is not owned by the kernel and delete it. | |
2058 | */ | |
2059 | ||
5b40964e SO |
2060 | if (optlen != sizeof(struct irda_ias_set)) { |
2061 | err = -EINVAL; | |
2062 | goto out; | |
2063 | } | |
1da177e4 LT |
2064 | |
2065 | ias_opt = kmalloc(sizeof(struct irda_ias_set), GFP_ATOMIC); | |
5b40964e SO |
2066 | if (ias_opt == NULL) { |
2067 | err = -ENOMEM; | |
2068 | goto out; | |
2069 | } | |
1da177e4 LT |
2070 | |
2071 | /* Copy query to the driver. */ | |
2072 | if (copy_from_user(ias_opt, optval, optlen)) { | |
2073 | kfree(ias_opt); | |
5b40964e SO |
2074 | err = -EFAULT; |
2075 | goto out; | |
1da177e4 LT |
2076 | } |
2077 | ||
2078 | /* Find the object we target. | |
2079 | * If the user gives us an empty string, we use the object | |
2080 | * associated with this socket. This will workaround | |
2081 | * duplicated class name - Jean II */ | |
2082 | if(ias_opt->irda_class_name[0] == '\0') | |
2083 | ias_obj = self->ias_obj; | |
2084 | else | |
2085 | ias_obj = irias_find_object(ias_opt->irda_class_name); | |
2086 | if(ias_obj == (struct ias_object *) NULL) { | |
2087 | kfree(ias_opt); | |
5b40964e SO |
2088 | err = -EINVAL; |
2089 | goto out; | |
1da177e4 LT |
2090 | } |
2091 | ||
2092 | /* Only ROOT can mess with the global IAS database. | |
2093 | * Users can only del attributes from the object associated | |
2094 | * with the socket they own - Jean II */ | |
2095 | if((!capable(CAP_NET_ADMIN)) && | |
2096 | ((ias_obj == NULL) || (ias_obj != self->ias_obj))) { | |
2097 | kfree(ias_opt); | |
5b40964e SO |
2098 | err = -EPERM; |
2099 | goto out; | |
1da177e4 LT |
2100 | } |
2101 | ||
2102 | /* Find the attribute (in the object) we target */ | |
2103 | ias_attr = irias_find_attrib(ias_obj, | |
2104 | ias_opt->irda_attrib_name); | |
2105 | if(ias_attr == (struct ias_attrib *) NULL) { | |
2106 | kfree(ias_opt); | |
5b40964e SO |
2107 | err = -EINVAL; |
2108 | goto out; | |
1da177e4 LT |
2109 | } |
2110 | ||
2111 | /* Check is the user space own the object */ | |
2112 | if(ias_attr->value->owner != IAS_USER_ATTR) { | |
0dc47877 | 2113 | IRDA_DEBUG(1, "%s(), attempting to delete a kernel attribute\n", __func__); |
1da177e4 | 2114 | kfree(ias_opt); |
5b40964e SO |
2115 | err = -EPERM; |
2116 | goto out; | |
1da177e4 LT |
2117 | } |
2118 | ||
2119 | /* Remove the attribute (and maybe the object) */ | |
2120 | irias_delete_attrib(ias_obj, ias_attr, 1); | |
2121 | kfree(ias_opt); | |
2122 | break; | |
2123 | case IRLMP_MAX_SDU_SIZE: | |
5b40964e SO |
2124 | if (optlen < sizeof(int)) { |
2125 | err = -EINVAL; | |
2126 | goto out; | |
2127 | } | |
1da177e4 | 2128 | |
5b40964e SO |
2129 | if (get_user(opt, (int __user *)optval)) { |
2130 | err = -EFAULT; | |
2131 | goto out; | |
2132 | } | |
1da177e4 LT |
2133 | |
2134 | /* Only possible for a seqpacket service (TTP with SAR) */ | |
2135 | if (sk->sk_type != SOCK_SEQPACKET) { | |
2136 | IRDA_DEBUG(2, "%s(), setting max_sdu_size = %d\n", | |
0dc47877 | 2137 | __func__, opt); |
1da177e4 LT |
2138 | self->max_sdu_size_rx = opt; |
2139 | } else { | |
2140 | IRDA_WARNING("%s: not allowed to set MAXSDUSIZE for this socket type!\n", | |
0dc47877 | 2141 | __func__); |
5b40964e SO |
2142 | err = -ENOPROTOOPT; |
2143 | goto out; | |
1da177e4 LT |
2144 | } |
2145 | break; | |
2146 | case IRLMP_HINTS_SET: | |
5b40964e SO |
2147 | if (optlen < sizeof(int)) { |
2148 | err = -EINVAL; | |
2149 | goto out; | |
2150 | } | |
1da177e4 LT |
2151 | |
2152 | /* The input is really a (__u8 hints[2]), easier as an int */ | |
5b40964e SO |
2153 | if (get_user(opt, (int __user *)optval)) { |
2154 | err = -EFAULT; | |
2155 | goto out; | |
2156 | } | |
1da177e4 LT |
2157 | |
2158 | /* Unregister any old registration */ | |
2159 | if (self->skey) | |
2160 | irlmp_unregister_service(self->skey); | |
2161 | ||
2162 | self->skey = irlmp_register_service((__u16) opt); | |
2163 | break; | |
2164 | case IRLMP_HINT_MASK_SET: | |
2165 | /* As opposed to the previous case which set the hint bits | |
2166 | * that we advertise, this one set the filter we use when | |
2167 | * making a discovery (nodes which don't match any hint | |
2168 | * bit in the mask are not reported). | |
2169 | */ | |
5b40964e SO |
2170 | if (optlen < sizeof(int)) { |
2171 | err = -EINVAL; | |
2172 | goto out; | |
2173 | } | |
1da177e4 LT |
2174 | |
2175 | /* The input is really a (__u8 hints[2]), easier as an int */ | |
5b40964e SO |
2176 | if (get_user(opt, (int __user *)optval)) { |
2177 | err = -EFAULT; | |
2178 | goto out; | |
2179 | } | |
1da177e4 LT |
2180 | |
2181 | /* Set the new hint mask */ | |
2182 | self->mask.word = (__u16) opt; | |
2183 | /* Mask out extension bits */ | |
2184 | self->mask.word &= 0x7f7f; | |
2185 | /* Check if no bits */ | |
2186 | if(!self->mask.word) | |
2187 | self->mask.word = 0xFFFF; | |
2188 | ||
2189 | break; | |
2190 | default: | |
5b40964e SO |
2191 | err = -ENOPROTOOPT; |
2192 | break; | |
1da177e4 | 2193 | } |
1da177e4 | 2194 | |
5b40964e SO |
2195 | out: |
2196 | release_sock(sk); | |
58a9d732 AB |
2197 | |
2198 | return err; | |
2199 | } | |
2200 | ||
1da177e4 LT |
2201 | /* |
2202 | * Function irda_extract_ias_value(ias_opt, ias_value) | |
2203 | * | |
2204 | * Translate internal IAS value structure to the user space representation | |
2205 | * | |
2206 | * The external representation of IAS values, as we exchange them with | |
2207 | * user space program is quite different from the internal representation, | |
2208 | * as stored in the IAS database (because we need a flat structure for | |
2209 | * crossing kernel boundary). | |
2210 | * This function transform the former in the latter. We also check | |
2211 | * that the value type is valid. | |
2212 | */ | |
2213 | static int irda_extract_ias_value(struct irda_ias_set *ias_opt, | |
2214 | struct ias_value *ias_value) | |
2215 | { | |
2216 | /* Look at the type */ | |
2217 | switch (ias_value->type) { | |
2218 | case IAS_INTEGER: | |
2219 | /* Copy the integer */ | |
2220 | ias_opt->attribute.irda_attrib_int = ias_value->t.integer; | |
2221 | break; | |
2222 | case IAS_OCT_SEQ: | |
2223 | /* Set length */ | |
2224 | ias_opt->attribute.irda_attrib_octet_seq.len = ias_value->len; | |
2225 | /* Copy over */ | |
2226 | memcpy(ias_opt->attribute.irda_attrib_octet_seq.octet_seq, | |
2227 | ias_value->t.oct_seq, ias_value->len); | |
2228 | break; | |
2229 | case IAS_STRING: | |
2230 | /* Set length */ | |
2231 | ias_opt->attribute.irda_attrib_string.len = ias_value->len; | |
2232 | ias_opt->attribute.irda_attrib_string.charset = ias_value->charset; | |
2233 | /* Copy over */ | |
2234 | memcpy(ias_opt->attribute.irda_attrib_string.string, | |
2235 | ias_value->t.string, ias_value->len); | |
2236 | /* NULL terminate the string (avoid troubles) */ | |
2237 | ias_opt->attribute.irda_attrib_string.string[ias_value->len] = '\0'; | |
2238 | break; | |
2239 | case IAS_MISSING: | |
2240 | default : | |
2241 | return -EINVAL; | |
2242 | } | |
2243 | ||
2244 | /* Copy type over */ | |
2245 | ias_opt->irda_attrib_type = ias_value->type; | |
2246 | ||
2247 | return 0; | |
2248 | } | |
2249 | ||
2250 | /* | |
2251 | * Function irda_getsockopt (sock, level, optname, optval, optlen) | |
2252 | */ | |
5b40964e | 2253 | static int irda_getsockopt(struct socket *sock, int level, int optname, |
1da177e4 LT |
2254 | char __user *optval, int __user *optlen) |
2255 | { | |
2256 | struct sock *sk = sock->sk; | |
2257 | struct irda_sock *self = irda_sk(sk); | |
2258 | struct irda_device_list list; | |
2259 | struct irda_device_info *discoveries; | |
2260 | struct irda_ias_set * ias_opt; /* IAS get/query params */ | |
2261 | struct ias_object * ias_obj; /* Object in IAS */ | |
2262 | struct ias_attrib * ias_attr; /* Attribute in IAS object */ | |
2263 | int daddr = DEV_ADDR_ANY; /* Dest address for IAS queries */ | |
2264 | int val = 0; | |
2265 | int len = 0; | |
5b40964e | 2266 | int err = 0; |
1da177e4 LT |
2267 | int offset, total; |
2268 | ||
0dc47877 | 2269 | IRDA_DEBUG(2, "%s(%p)\n", __func__, self); |
1da177e4 LT |
2270 | |
2271 | if (level != SOL_IRLMP) | |
2272 | return -ENOPROTOOPT; | |
2273 | ||
2274 | if (get_user(len, optlen)) | |
2275 | return -EFAULT; | |
2276 | ||
2277 | if(len < 0) | |
2278 | return -EINVAL; | |
2279 | ||
5b40964e SO |
2280 | lock_sock(sk); |
2281 | ||
1da177e4 LT |
2282 | switch (optname) { |
2283 | case IRLMP_ENUMDEVICES: | |
2284 | /* Ask lmp for the current discovery log */ | |
2285 | discoveries = irlmp_get_discoveries(&list.len, self->mask.word, | |
2286 | self->nslots); | |
2287 | /* Check if the we got some results */ | |
5b40964e SO |
2288 | if (discoveries == NULL) { |
2289 | err = -EAGAIN; | |
2290 | goto out; /* Didn't find any devices */ | |
2291 | } | |
1da177e4 LT |
2292 | |
2293 | /* Write total list length back to client */ | |
2294 | if (copy_to_user(optval, &list, | |
2295 | sizeof(struct irda_device_list) - | |
2296 | sizeof(struct irda_device_info))) | |
2297 | err = -EFAULT; | |
2298 | ||
2299 | /* Offset to first device entry */ | |
2300 | offset = sizeof(struct irda_device_list) - | |
2301 | sizeof(struct irda_device_info); | |
2302 | ||
2303 | /* Copy the list itself - watch for overflow */ | |
5b40964e | 2304 | if (list.len > 2048) { |
1da177e4 LT |
2305 | err = -EINVAL; |
2306 | goto bed; | |
2307 | } | |
2308 | total = offset + (list.len * sizeof(struct irda_device_info)); | |
2309 | if (total > len) | |
2310 | total = len; | |
2311 | if (copy_to_user(optval+offset, discoveries, total - offset)) | |
2312 | err = -EFAULT; | |
2313 | ||
2314 | /* Write total number of bytes used back to client */ | |
2315 | if (put_user(total, optlen)) | |
2316 | err = -EFAULT; | |
2317 | bed: | |
2318 | /* Free up our buffer */ | |
2319 | kfree(discoveries); | |
1da177e4 LT |
2320 | break; |
2321 | case IRLMP_MAX_SDU_SIZE: | |
2322 | val = self->max_data_size; | |
2323 | len = sizeof(int); | |
5b40964e SO |
2324 | if (put_user(len, optlen)) { |
2325 | err = -EFAULT; | |
2326 | goto out; | |
2327 | } | |
2328 | ||
2329 | if (copy_to_user(optval, &val, len)) { | |
2330 | err = -EFAULT; | |
2331 | goto out; | |
2332 | } | |
1da177e4 | 2333 | |
1da177e4 LT |
2334 | break; |
2335 | case IRLMP_IAS_GET: | |
2336 | /* The user want an object from our local IAS database. | |
2337 | * We just need to query the IAS and return the value | |
2338 | * that we found */ | |
2339 | ||
2340 | /* Check that the user has allocated the right space for us */ | |
5b40964e SO |
2341 | if (len != sizeof(struct irda_ias_set)) { |
2342 | err = -EINVAL; | |
2343 | goto out; | |
2344 | } | |
1da177e4 LT |
2345 | |
2346 | ias_opt = kmalloc(sizeof(struct irda_ias_set), GFP_ATOMIC); | |
5b40964e SO |
2347 | if (ias_opt == NULL) { |
2348 | err = -ENOMEM; | |
2349 | goto out; | |
2350 | } | |
1da177e4 LT |
2351 | |
2352 | /* Copy query to the driver. */ | |
2353 | if (copy_from_user(ias_opt, optval, len)) { | |
2354 | kfree(ias_opt); | |
5b40964e SO |
2355 | err = -EFAULT; |
2356 | goto out; | |
1da177e4 LT |
2357 | } |
2358 | ||
2359 | /* Find the object we target. | |
2360 | * If the user gives us an empty string, we use the object | |
2361 | * associated with this socket. This will workaround | |
2362 | * duplicated class name - Jean II */ | |
2363 | if(ias_opt->irda_class_name[0] == '\0') | |
2364 | ias_obj = self->ias_obj; | |
2365 | else | |
2366 | ias_obj = irias_find_object(ias_opt->irda_class_name); | |
2367 | if(ias_obj == (struct ias_object *) NULL) { | |
2368 | kfree(ias_opt); | |
5b40964e SO |
2369 | err = -EINVAL; |
2370 | goto out; | |
1da177e4 LT |
2371 | } |
2372 | ||
2373 | /* Find the attribute (in the object) we target */ | |
2374 | ias_attr = irias_find_attrib(ias_obj, | |
2375 | ias_opt->irda_attrib_name); | |
2376 | if(ias_attr == (struct ias_attrib *) NULL) { | |
2377 | kfree(ias_opt); | |
5b40964e SO |
2378 | err = -EINVAL; |
2379 | goto out; | |
1da177e4 LT |
2380 | } |
2381 | ||
2382 | /* Translate from internal to user structure */ | |
2383 | err = irda_extract_ias_value(ias_opt, ias_attr->value); | |
2384 | if(err) { | |
2385 | kfree(ias_opt); | |
5b40964e | 2386 | goto out; |
1da177e4 LT |
2387 | } |
2388 | ||
2389 | /* Copy reply to the user */ | |
2390 | if (copy_to_user(optval, ias_opt, | |
2391 | sizeof(struct irda_ias_set))) { | |
2392 | kfree(ias_opt); | |
5b40964e SO |
2393 | err = -EFAULT; |
2394 | goto out; | |
1da177e4 LT |
2395 | } |
2396 | /* Note : don't need to put optlen, we checked it */ | |
2397 | kfree(ias_opt); | |
2398 | break; | |
2399 | case IRLMP_IAS_QUERY: | |
2400 | /* The user want an object from a remote IAS database. | |
2401 | * We need to use IAP to query the remote database and | |
2402 | * then wait for the answer to come back. */ | |
2403 | ||
2404 | /* Check that the user has allocated the right space for us */ | |
5b40964e SO |
2405 | if (len != sizeof(struct irda_ias_set)) { |
2406 | err = -EINVAL; | |
2407 | goto out; | |
2408 | } | |
1da177e4 LT |
2409 | |
2410 | ias_opt = kmalloc(sizeof(struct irda_ias_set), GFP_ATOMIC); | |
5b40964e SO |
2411 | if (ias_opt == NULL) { |
2412 | err = -ENOMEM; | |
2413 | goto out; | |
2414 | } | |
1da177e4 LT |
2415 | |
2416 | /* Copy query to the driver. */ | |
2417 | if (copy_from_user(ias_opt, optval, len)) { | |
2418 | kfree(ias_opt); | |
5b40964e SO |
2419 | err = -EFAULT; |
2420 | goto out; | |
1da177e4 LT |
2421 | } |
2422 | ||
2423 | /* At this point, there are two cases... | |
2424 | * 1) the socket is connected - that's the easy case, we | |
2425 | * just query the device we are connected to... | |
2426 | * 2) the socket is not connected - the user doesn't want | |
2427 | * to connect and/or may not have a valid service name | |
2428 | * (so can't create a fake connection). In this case, | |
2429 | * we assume that the user pass us a valid destination | |
2430 | * address in the requesting structure... | |
2431 | */ | |
2432 | if(self->daddr != DEV_ADDR_ANY) { | |
2433 | /* We are connected - reuse known daddr */ | |
2434 | daddr = self->daddr; | |
2435 | } else { | |
2436 | /* We are not connected, we must specify a valid | |
2437 | * destination address */ | |
2438 | daddr = ias_opt->daddr; | |
2439 | if((!daddr) || (daddr == DEV_ADDR_ANY)) { | |
2440 | kfree(ias_opt); | |
5b40964e SO |
2441 | err = -EINVAL; |
2442 | goto out; | |
1da177e4 LT |
2443 | } |
2444 | } | |
2445 | ||
2446 | /* Check that we can proceed with IAP */ | |
2447 | if (self->iriap) { | |
2448 | IRDA_WARNING("%s: busy with a previous query\n", | |
0dc47877 | 2449 | __func__); |
1da177e4 | 2450 | kfree(ias_opt); |
5b40964e SO |
2451 | err = -EBUSY; |
2452 | goto out; | |
1da177e4 LT |
2453 | } |
2454 | ||
2455 | self->iriap = iriap_open(LSAP_ANY, IAS_CLIENT, self, | |
2456 | irda_getvalue_confirm); | |
2457 | ||
2458 | if (self->iriap == NULL) { | |
2459 | kfree(ias_opt); | |
5b40964e SO |
2460 | err = -ENOMEM; |
2461 | goto out; | |
1da177e4 LT |
2462 | } |
2463 | ||
2464 | /* Treat unexpected wakeup as disconnect */ | |
2465 | self->errno = -EHOSTUNREACH; | |
2466 | ||
2467 | /* Query remote LM-IAS */ | |
2468 | iriap_getvaluebyclass_request(self->iriap, | |
2469 | self->saddr, daddr, | |
2470 | ias_opt->irda_class_name, | |
2471 | ias_opt->irda_attrib_name); | |
2472 | ||
2473 | /* Wait for answer, if not yet finished (or failed) */ | |
2474 | if (wait_event_interruptible(self->query_wait, | |
2475 | (self->iriap == NULL))) { | |
2476 | /* pending request uses copy of ias_opt-content | |
2477 | * we can free it regardless! */ | |
2478 | kfree(ias_opt); | |
2479 | /* Treat signals as disconnect */ | |
5b40964e SO |
2480 | err = -EHOSTUNREACH; |
2481 | goto out; | |
1da177e4 LT |
2482 | } |
2483 | ||
2484 | /* Check what happened */ | |
2485 | if (self->errno) | |
2486 | { | |
2487 | kfree(ias_opt); | |
2488 | /* Requested object/attribute doesn't exist */ | |
2489 | if((self->errno == IAS_CLASS_UNKNOWN) || | |
2490 | (self->errno == IAS_ATTRIB_UNKNOWN)) | |
5b40964e | 2491 | err = -EADDRNOTAVAIL; |
1da177e4 | 2492 | else |
5b40964e SO |
2493 | err = -EHOSTUNREACH; |
2494 | ||
2495 | goto out; | |
1da177e4 LT |
2496 | } |
2497 | ||
2498 | /* Translate from internal to user structure */ | |
2499 | err = irda_extract_ias_value(ias_opt, self->ias_result); | |
2500 | if (self->ias_result) | |
2501 | irias_delete_value(self->ias_result); | |
2502 | if (err) { | |
2503 | kfree(ias_opt); | |
5b40964e | 2504 | goto out; |
1da177e4 LT |
2505 | } |
2506 | ||
2507 | /* Copy reply to the user */ | |
2508 | if (copy_to_user(optval, ias_opt, | |
2509 | sizeof(struct irda_ias_set))) { | |
2510 | kfree(ias_opt); | |
5b40964e SO |
2511 | err = -EFAULT; |
2512 | goto out; | |
1da177e4 LT |
2513 | } |
2514 | /* Note : don't need to put optlen, we checked it */ | |
2515 | kfree(ias_opt); | |
2516 | break; | |
2517 | case IRLMP_WAITDEVICE: | |
2518 | /* This function is just another way of seeing life ;-) | |
2519 | * IRLMP_ENUMDEVICES assumes that you have a static network, | |
2520 | * and that you just want to pick one of the devices present. | |
2521 | * On the other hand, in here we assume that no device is | |
2522 | * present and that at some point in the future a device will | |
2523 | * come into range. When this device arrive, we just wake | |
2524 | * up the caller, so that he has time to connect to it before | |
2525 | * the device goes away... | |
2526 | * Note : once the node has been discovered for more than a | |
2527 | * few second, it won't trigger this function, unless it | |
2528 | * goes away and come back changes its hint bits (so we | |
2529 | * might call it IRLMP_WAITNEWDEVICE). | |
2530 | */ | |
2531 | ||
2532 | /* Check that the user is passing us an int */ | |
5b40964e SO |
2533 | if (len != sizeof(int)) { |
2534 | err = -EINVAL; | |
2535 | goto out; | |
2536 | } | |
1da177e4 | 2537 | /* Get timeout in ms (max time we block the caller) */ |
5b40964e SO |
2538 | if (get_user(val, (int __user *)optval)) { |
2539 | err = -EFAULT; | |
2540 | goto out; | |
2541 | } | |
1da177e4 LT |
2542 | |
2543 | /* Tell IrLMP we want to be notified */ | |
2544 | irlmp_update_client(self->ckey, self->mask.word, | |
2545 | irda_selective_discovery_indication, | |
2546 | NULL, (void *) self); | |
2547 | ||
2548 | /* Do some discovery (and also return cached results) */ | |
2549 | irlmp_discovery_request(self->nslots); | |
2550 | ||
2551 | /* Wait until a node is discovered */ | |
2552 | if (!self->cachedaddr) { | |
0dc47877 | 2553 | IRDA_DEBUG(1, "%s(), nothing discovered yet, going to sleep...\n", __func__); |
1da177e4 LT |
2554 | |
2555 | /* Set watchdog timer to expire in <val> ms. */ | |
2556 | self->errno = 0; | |
b24b8a24 PE |
2557 | setup_timer(&self->watchdog, irda_discovery_timeout, |
2558 | (unsigned long)self); | |
1da177e4 LT |
2559 | self->watchdog.expires = jiffies + (val * HZ/1000); |
2560 | add_timer(&(self->watchdog)); | |
2561 | ||
2562 | /* Wait for IR-LMP to call us back */ | |
2563 | __wait_event_interruptible(self->query_wait, | |
2564 | (self->cachedaddr != 0 || self->errno == -ETIME), | |
5b40964e | 2565 | err); |
1da177e4 LT |
2566 | |
2567 | /* If watchdog is still activated, kill it! */ | |
2568 | if(timer_pending(&(self->watchdog))) | |
2569 | del_timer(&(self->watchdog)); | |
2570 | ||
0dc47877 | 2571 | IRDA_DEBUG(1, "%s(), ...waking up !\n", __func__); |
1da177e4 | 2572 | |
5b40964e SO |
2573 | if (err != 0) |
2574 | goto out; | |
1da177e4 LT |
2575 | } |
2576 | else | |
2577 | IRDA_DEBUG(1, "%s(), found immediately !\n", | |
0dc47877 | 2578 | __func__); |
1da177e4 LT |
2579 | |
2580 | /* Tell IrLMP that we have been notified */ | |
2581 | irlmp_update_client(self->ckey, self->mask.word, | |
2582 | NULL, NULL, NULL); | |
2583 | ||
2584 | /* Check if the we got some results */ | |
2585 | if (!self->cachedaddr) | |
2586 | return -EAGAIN; /* Didn't find any devices */ | |
2587 | daddr = self->cachedaddr; | |
2588 | /* Cleanup */ | |
2589 | self->cachedaddr = 0; | |
2590 | ||
2591 | /* We return the daddr of the device that trigger the | |
2592 | * wakeup. As irlmp pass us only the new devices, we | |
2593 | * are sure that it's not an old device. | |
2594 | * If the user want more details, he should query | |
2595 | * the whole discovery log and pick one device... | |
2596 | */ | |
5b40964e SO |
2597 | if (put_user(daddr, (int __user *)optval)) { |
2598 | err = -EFAULT; | |
2599 | goto out; | |
2600 | } | |
1da177e4 LT |
2601 | |
2602 | break; | |
2603 | default: | |
5b40964e | 2604 | err = -ENOPROTOOPT; |
1da177e4 LT |
2605 | } |
2606 | ||
5b40964e | 2607 | out: |
58a9d732 | 2608 | |
5b40964e | 2609 | release_sock(sk); |
58a9d732 AB |
2610 | |
2611 | return err; | |
2612 | } | |
2613 | ||
ec1b4cf7 | 2614 | static const struct net_proto_family irda_family_ops = { |
1da177e4 LT |
2615 | .family = PF_IRDA, |
2616 | .create = irda_create, | |
2617 | .owner = THIS_MODULE, | |
2618 | }; | |
2619 | ||
58a9d732 | 2620 | static const struct proto_ops irda_stream_ops = { |
1da177e4 LT |
2621 | .family = PF_IRDA, |
2622 | .owner = THIS_MODULE, | |
2623 | .release = irda_release, | |
2624 | .bind = irda_bind, | |
2625 | .connect = irda_connect, | |
2626 | .socketpair = sock_no_socketpair, | |
2627 | .accept = irda_accept, | |
2628 | .getname = irda_getname, | |
2629 | .poll = irda_poll, | |
2630 | .ioctl = irda_ioctl, | |
f6c90b71 PV |
2631 | #ifdef CONFIG_COMPAT |
2632 | .compat_ioctl = irda_compat_ioctl, | |
2633 | #endif | |
1da177e4 LT |
2634 | .listen = irda_listen, |
2635 | .shutdown = irda_shutdown, | |
2636 | .setsockopt = irda_setsockopt, | |
2637 | .getsockopt = irda_getsockopt, | |
2638 | .sendmsg = irda_sendmsg, | |
2639 | .recvmsg = irda_recvmsg_stream, | |
2640 | .mmap = sock_no_mmap, | |
2641 | .sendpage = sock_no_sendpage, | |
2642 | }; | |
2643 | ||
58a9d732 | 2644 | static const struct proto_ops irda_seqpacket_ops = { |
1da177e4 LT |
2645 | .family = PF_IRDA, |
2646 | .owner = THIS_MODULE, | |
2647 | .release = irda_release, | |
2648 | .bind = irda_bind, | |
2649 | .connect = irda_connect, | |
2650 | .socketpair = sock_no_socketpair, | |
2651 | .accept = irda_accept, | |
2652 | .getname = irda_getname, | |
5b40964e | 2653 | .poll = datagram_poll, |
1da177e4 | 2654 | .ioctl = irda_ioctl, |
f6c90b71 PV |
2655 | #ifdef CONFIG_COMPAT |
2656 | .compat_ioctl = irda_compat_ioctl, | |
2657 | #endif | |
1da177e4 LT |
2658 | .listen = irda_listen, |
2659 | .shutdown = irda_shutdown, | |
2660 | .setsockopt = irda_setsockopt, | |
2661 | .getsockopt = irda_getsockopt, | |
2662 | .sendmsg = irda_sendmsg, | |
2663 | .recvmsg = irda_recvmsg_dgram, | |
2664 | .mmap = sock_no_mmap, | |
2665 | .sendpage = sock_no_sendpage, | |
2666 | }; | |
2667 | ||
58a9d732 | 2668 | static const struct proto_ops irda_dgram_ops = { |
1da177e4 LT |
2669 | .family = PF_IRDA, |
2670 | .owner = THIS_MODULE, | |
2671 | .release = irda_release, | |
2672 | .bind = irda_bind, | |
2673 | .connect = irda_connect, | |
2674 | .socketpair = sock_no_socketpair, | |
2675 | .accept = irda_accept, | |
2676 | .getname = irda_getname, | |
5b40964e | 2677 | .poll = datagram_poll, |
1da177e4 | 2678 | .ioctl = irda_ioctl, |
f6c90b71 PV |
2679 | #ifdef CONFIG_COMPAT |
2680 | .compat_ioctl = irda_compat_ioctl, | |
2681 | #endif | |
1da177e4 LT |
2682 | .listen = irda_listen, |
2683 | .shutdown = irda_shutdown, | |
2684 | .setsockopt = irda_setsockopt, | |
2685 | .getsockopt = irda_getsockopt, | |
2686 | .sendmsg = irda_sendmsg_dgram, | |
2687 | .recvmsg = irda_recvmsg_dgram, | |
2688 | .mmap = sock_no_mmap, | |
2689 | .sendpage = sock_no_sendpage, | |
2690 | }; | |
2691 | ||
2692 | #ifdef CONFIG_IRDA_ULTRA | |
58a9d732 | 2693 | static const struct proto_ops irda_ultra_ops = { |
1da177e4 LT |
2694 | .family = PF_IRDA, |
2695 | .owner = THIS_MODULE, | |
2696 | .release = irda_release, | |
2697 | .bind = irda_bind, | |
2698 | .connect = sock_no_connect, | |
2699 | .socketpair = sock_no_socketpair, | |
2700 | .accept = sock_no_accept, | |
2701 | .getname = irda_getname, | |
5b40964e | 2702 | .poll = datagram_poll, |
1da177e4 | 2703 | .ioctl = irda_ioctl, |
f6c90b71 PV |
2704 | #ifdef CONFIG_COMPAT |
2705 | .compat_ioctl = irda_compat_ioctl, | |
2706 | #endif | |
1da177e4 LT |
2707 | .listen = sock_no_listen, |
2708 | .shutdown = irda_shutdown, | |
2709 | .setsockopt = irda_setsockopt, | |
2710 | .getsockopt = irda_getsockopt, | |
2711 | .sendmsg = irda_sendmsg_ultra, | |
2712 | .recvmsg = irda_recvmsg_dgram, | |
2713 | .mmap = sock_no_mmap, | |
2714 | .sendpage = sock_no_sendpage, | |
2715 | }; | |
2716 | #endif /* CONFIG_IRDA_ULTRA */ | |
2717 | ||
1da177e4 LT |
2718 | /* |
2719 | * Function irsock_init (pro) | |
2720 | * | |
2721 | * Initialize IrDA protocol | |
2722 | * | |
2723 | */ | |
2724 | int __init irsock_init(void) | |
2725 | { | |
2726 | int rc = proto_register(&irda_proto, 0); | |
2727 | ||
2728 | if (rc == 0) | |
2729 | rc = sock_register(&irda_family_ops); | |
2730 | ||
2731 | return rc; | |
2732 | } | |
2733 | ||
2734 | /* | |
2735 | * Function irsock_cleanup (void) | |
2736 | * | |
2737 | * Remove IrDA protocol | |
2738 | * | |
2739 | */ | |
75a69ac6 | 2740 | void irsock_cleanup(void) |
1da177e4 LT |
2741 | { |
2742 | sock_unregister(PF_IRDA); | |
2743 | proto_unregister(&irda_proto); | |
2744 | } |