Line data Source code
1 : /*
2 : Unix SMB/CIFS implementation.
3 :
4 : Copyright (C) Stefan Metzmacher 2009
5 :
6 : ** NOTE! The following LGPL license applies to the tsocket
7 : ** library. This does NOT imply that all of Samba is released
8 : ** under the LGPL
9 :
10 : This library is free software; you can redistribute it and/or
11 : modify it under the terms of the GNU Lesser General Public
12 : License as published by the Free Software Foundation; either
13 : version 3 of the License, or (at your option) any later version.
14 :
15 : This library is distributed in the hope that it will be useful,
16 : but WITHOUT ANY WARRANTY; without even the implied warranty of
17 : MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 : Lesser General Public License for more details.
19 :
20 : You should have received a copy of the GNU Lesser General Public
21 : License along with this library; if not, see <http://www.gnu.org/licenses/>.
22 : */
23 :
24 : #include "replace.h"
25 : #include "system/filesys.h"
26 : #include "tsocket.h"
27 : #include "tsocket_internal.h"
28 :
29 29108027 : int tsocket_simple_int_recv(struct tevent_req *req, int *perrno)
30 : {
31 : enum tevent_req_state state;
32 : uint64_t error;
33 :
34 29108027 : if (!tevent_req_is_error(req, &state, &error)) {
35 28797389 : return 0;
36 : }
37 :
38 310638 : switch (state) {
39 4 : case TEVENT_REQ_NO_MEMORY:
40 4 : *perrno = ENOMEM;
41 4 : return -1;
42 0 : case TEVENT_REQ_TIMED_OUT:
43 0 : *perrno = ETIMEDOUT;
44 0 : return -1;
45 310634 : case TEVENT_REQ_USER_ERROR:
46 310634 : *perrno = (int)error;
47 310634 : return -1;
48 0 : default:
49 0 : break;
50 : }
51 :
52 0 : *perrno = EIO;
53 0 : return -1;
54 : }
55 :
56 445630 : struct tsocket_address *_tsocket_address_create(TALLOC_CTX *mem_ctx,
57 : const struct tsocket_address_ops *ops,
58 : void *pstate,
59 : size_t psize,
60 : const char *type,
61 : const char *location)
62 : {
63 445630 : void **ppstate = (void **)pstate;
64 : struct tsocket_address *addr;
65 :
66 445630 : addr = talloc_zero(mem_ctx, struct tsocket_address);
67 445630 : if (!addr) {
68 0 : return NULL;
69 : }
70 445630 : addr->ops = ops;
71 445630 : addr->location = location;
72 445630 : addr->private_data = talloc_size(addr, psize);
73 445630 : if (!addr->private_data) {
74 0 : talloc_free(addr);
75 0 : return NULL;
76 : }
77 445630 : talloc_set_name_const(addr->private_data, type);
78 :
79 445630 : *ppstate = addr->private_data;
80 445630 : return addr;
81 : }
82 :
83 487932 : char *tsocket_address_string(const struct tsocket_address *addr,
84 : TALLOC_CTX *mem_ctx)
85 : {
86 487932 : if (!addr) {
87 0 : return talloc_strdup(mem_ctx, "NULL");
88 : }
89 487932 : return addr->ops->string(addr, mem_ctx);
90 : }
91 :
92 119965 : struct tsocket_address *_tsocket_address_copy(const struct tsocket_address *addr,
93 : TALLOC_CTX *mem_ctx,
94 : const char *location)
95 : {
96 119965 : return addr->ops->copy(addr, mem_ctx, location);
97 : }
98 :
99 : struct tdgram_context {
100 : const char *location;
101 : const struct tdgram_context_ops *ops;
102 : void *private_data;
103 :
104 : struct tevent_req *recvfrom_req;
105 : struct tevent_req *sendto_req;
106 : };
107 :
108 3352 : static int tdgram_context_destructor(struct tdgram_context *dgram)
109 : {
110 3352 : if (dgram->recvfrom_req) {
111 0 : tevent_req_received(dgram->recvfrom_req);
112 : }
113 :
114 3352 : if (dgram->sendto_req) {
115 0 : tevent_req_received(dgram->sendto_req);
116 : }
117 :
118 3352 : return 0;
119 : }
120 :
121 3004 : struct tdgram_context *_tdgram_context_create(TALLOC_CTX *mem_ctx,
122 : const struct tdgram_context_ops *ops,
123 : void *pstate,
124 : size_t psize,
125 : const char *type,
126 : const char *location)
127 : {
128 : struct tdgram_context *dgram;
129 3004 : void **ppstate = (void **)pstate;
130 : void *state;
131 :
132 3004 : dgram = talloc(mem_ctx, struct tdgram_context);
133 3004 : if (dgram == NULL) {
134 0 : return NULL;
135 : }
136 3004 : dgram->location = location;
137 3004 : dgram->ops = ops;
138 3004 : dgram->recvfrom_req = NULL;
139 3004 : dgram->sendto_req = NULL;
140 :
141 3004 : state = talloc_size(dgram, psize);
142 3004 : if (state == NULL) {
143 0 : talloc_free(dgram);
144 0 : return NULL;
145 : }
146 3004 : talloc_set_name_const(state, type);
147 :
148 3004 : dgram->private_data = state;
149 :
150 3004 : talloc_set_destructor(dgram, tdgram_context_destructor);
151 :
152 3004 : *ppstate = state;
153 3004 : return dgram;
154 : }
155 :
156 292954 : void *_tdgram_context_data(struct tdgram_context *dgram)
157 : {
158 292954 : return dgram->private_data;
159 : }
160 :
161 : struct tdgram_recvfrom_state {
162 : const struct tdgram_context_ops *ops;
163 : struct tdgram_context *dgram;
164 : uint8_t *buf;
165 : size_t len;
166 : struct tsocket_address *src;
167 : };
168 :
169 49332 : static int tdgram_recvfrom_destructor(struct tdgram_recvfrom_state *state)
170 : {
171 49332 : if (state->dgram) {
172 49332 : state->dgram->recvfrom_req = NULL;
173 : }
174 :
175 49332 : return 0;
176 : }
177 :
178 : static void tdgram_recvfrom_done(struct tevent_req *subreq);
179 :
180 48984 : struct tevent_req *tdgram_recvfrom_send(TALLOC_CTX *mem_ctx,
181 : struct tevent_context *ev,
182 : struct tdgram_context *dgram)
183 : {
184 : struct tevent_req *req;
185 : struct tdgram_recvfrom_state *state;
186 : struct tevent_req *subreq;
187 :
188 48984 : req = tevent_req_create(mem_ctx, &state,
189 : struct tdgram_recvfrom_state);
190 48984 : if (req == NULL) {
191 0 : return NULL;
192 : }
193 :
194 48984 : state->ops = dgram->ops;
195 48984 : state->dgram = dgram;
196 48984 : state->buf = NULL;
197 48984 : state->len = 0;
198 48984 : state->src = NULL;
199 :
200 48984 : if (dgram->recvfrom_req) {
201 0 : tevent_req_error(req, EBUSY);
202 0 : goto post;
203 : }
204 48984 : dgram->recvfrom_req = req;
205 :
206 48984 : talloc_set_destructor(state, tdgram_recvfrom_destructor);
207 :
208 48984 : subreq = state->ops->recvfrom_send(state, ev, dgram);
209 48984 : if (tevent_req_nomem(subreq, req)) {
210 0 : goto post;
211 : }
212 48984 : tevent_req_set_callback(subreq, tdgram_recvfrom_done, req);
213 :
214 48984 : return req;
215 :
216 0 : post:
217 0 : tevent_req_post(req, ev);
218 0 : return req;
219 : }
220 :
221 48078 : static void tdgram_recvfrom_done(struct tevent_req *subreq)
222 : {
223 48078 : struct tevent_req *req = tevent_req_callback_data(subreq,
224 : struct tevent_req);
225 48078 : struct tdgram_recvfrom_state *state = tevent_req_data(req,
226 : struct tdgram_recvfrom_state);
227 : ssize_t ret;
228 : int sys_errno;
229 :
230 48078 : ret = state->ops->recvfrom_recv(subreq, &sys_errno, state,
231 : &state->buf, &state->src);
232 48078 : if (ret == -1) {
233 4 : tevent_req_error(req, sys_errno);
234 4 : return;
235 : }
236 :
237 48074 : state->len = ret;
238 :
239 48074 : tevent_req_done(req);
240 : }
241 :
242 48078 : ssize_t tdgram_recvfrom_recv(struct tevent_req *req,
243 : int *perrno,
244 : TALLOC_CTX *mem_ctx,
245 : uint8_t **buf,
246 : struct tsocket_address **src)
247 : {
248 48078 : struct tdgram_recvfrom_state *state = tevent_req_data(req,
249 : struct tdgram_recvfrom_state);
250 : ssize_t ret;
251 :
252 48078 : ret = tsocket_simple_int_recv(req, perrno);
253 48078 : if (ret == 0) {
254 48074 : *buf = talloc_move(mem_ctx, &state->buf);
255 48074 : ret = state->len;
256 48074 : if (src) {
257 46899 : *src = talloc_move(mem_ctx, &state->src);
258 : }
259 : }
260 :
261 48078 : tevent_req_received(req);
262 48078 : return ret;
263 : }
264 :
265 : struct tdgram_sendto_state {
266 : const struct tdgram_context_ops *ops;
267 : struct tdgram_context *dgram;
268 : ssize_t ret;
269 : };
270 :
271 48218 : static int tdgram_sendto_destructor(struct tdgram_sendto_state *state)
272 : {
273 48218 : if (state->dgram) {
274 48218 : state->dgram->sendto_req = NULL;
275 : }
276 :
277 48218 : return 0;
278 : }
279 :
280 : static void tdgram_sendto_done(struct tevent_req *subreq);
281 :
282 48218 : struct tevent_req *tdgram_sendto_send(TALLOC_CTX *mem_ctx,
283 : struct tevent_context *ev,
284 : struct tdgram_context *dgram,
285 : const uint8_t *buf, size_t len,
286 : const struct tsocket_address *dst)
287 : {
288 : struct tevent_req *req;
289 : struct tdgram_sendto_state *state;
290 : struct tevent_req *subreq;
291 :
292 48218 : req = tevent_req_create(mem_ctx, &state,
293 : struct tdgram_sendto_state);
294 48218 : if (req == NULL) {
295 0 : return NULL;
296 : }
297 :
298 48218 : state->ops = dgram->ops;
299 48218 : state->dgram = dgram;
300 48218 : state->ret = -1;
301 :
302 48218 : if (len == 0) {
303 0 : tevent_req_error(req, EINVAL);
304 0 : goto post;
305 : }
306 :
307 48218 : if (dgram->sendto_req) {
308 0 : tevent_req_error(req, EBUSY);
309 0 : goto post;
310 : }
311 48218 : dgram->sendto_req = req;
312 :
313 48218 : talloc_set_destructor(state, tdgram_sendto_destructor);
314 :
315 48218 : subreq = state->ops->sendto_send(state, ev, dgram,
316 : buf, len, dst);
317 48218 : if (tevent_req_nomem(subreq, req)) {
318 0 : goto post;
319 : }
320 48218 : tevent_req_set_callback(subreq, tdgram_sendto_done, req);
321 :
322 48218 : return req;
323 :
324 0 : post:
325 0 : tevent_req_post(req, ev);
326 0 : return req;
327 : }
328 :
329 48218 : static void tdgram_sendto_done(struct tevent_req *subreq)
330 : {
331 48218 : struct tevent_req *req = tevent_req_callback_data(subreq,
332 : struct tevent_req);
333 48218 : struct tdgram_sendto_state *state = tevent_req_data(req,
334 : struct tdgram_sendto_state);
335 : ssize_t ret;
336 : int sys_errno;
337 :
338 48218 : ret = state->ops->sendto_recv(subreq, &sys_errno);
339 48218 : if (ret == -1) {
340 34 : tevent_req_error(req, sys_errno);
341 34 : return;
342 : }
343 :
344 48184 : state->ret = ret;
345 :
346 48184 : tevent_req_done(req);
347 : }
348 :
349 48218 : ssize_t tdgram_sendto_recv(struct tevent_req *req,
350 : int *perrno)
351 : {
352 48218 : struct tdgram_sendto_state *state = tevent_req_data(req,
353 : struct tdgram_sendto_state);
354 : ssize_t ret;
355 :
356 48218 : ret = tsocket_simple_int_recv(req, perrno);
357 48218 : if (ret == 0) {
358 48184 : ret = state->ret;
359 : }
360 :
361 48218 : tevent_req_received(req);
362 48218 : return ret;
363 : }
364 :
365 : struct tdgram_disconnect_state {
366 : const struct tdgram_context_ops *ops;
367 : };
368 :
369 : static void tdgram_disconnect_done(struct tevent_req *subreq);
370 :
371 0 : struct tevent_req *tdgram_disconnect_send(TALLOC_CTX *mem_ctx,
372 : struct tevent_context *ev,
373 : struct tdgram_context *dgram)
374 : {
375 : struct tevent_req *req;
376 : struct tdgram_disconnect_state *state;
377 : struct tevent_req *subreq;
378 :
379 0 : req = tevent_req_create(mem_ctx, &state,
380 : struct tdgram_disconnect_state);
381 0 : if (req == NULL) {
382 0 : return NULL;
383 : }
384 :
385 0 : state->ops = dgram->ops;
386 :
387 0 : if (dgram->recvfrom_req || dgram->sendto_req) {
388 0 : tevent_req_error(req, EBUSY);
389 0 : goto post;
390 : }
391 :
392 0 : subreq = state->ops->disconnect_send(state, ev, dgram);
393 0 : if (tevent_req_nomem(subreq, req)) {
394 0 : goto post;
395 : }
396 0 : tevent_req_set_callback(subreq, tdgram_disconnect_done, req);
397 :
398 0 : return req;
399 :
400 0 : post:
401 0 : tevent_req_post(req, ev);
402 0 : return req;
403 : }
404 :
405 0 : static void tdgram_disconnect_done(struct tevent_req *subreq)
406 : {
407 0 : struct tevent_req *req = tevent_req_callback_data(subreq,
408 : struct tevent_req);
409 0 : struct tdgram_disconnect_state *state = tevent_req_data(req,
410 : struct tdgram_disconnect_state);
411 : int ret;
412 : int sys_errno;
413 :
414 0 : ret = state->ops->disconnect_recv(subreq, &sys_errno);
415 0 : if (ret == -1) {
416 0 : tevent_req_error(req, sys_errno);
417 0 : return;
418 : }
419 :
420 0 : tevent_req_done(req);
421 : }
422 :
423 0 : int tdgram_disconnect_recv(struct tevent_req *req,
424 : int *perrno)
425 : {
426 : int ret;
427 :
428 0 : ret = tsocket_simple_int_recv(req, perrno);
429 :
430 0 : tevent_req_received(req);
431 0 : return ret;
432 : }
433 :
434 : struct tstream_context {
435 : const char *location;
436 : const struct tstream_context_ops *ops;
437 : void *private_data;
438 :
439 : struct tevent_req *readv_req;
440 : struct tevent_req *writev_req;
441 : };
442 :
443 186797 : static int tstream_context_destructor(struct tstream_context *stream)
444 : {
445 186797 : if (stream->readv_req) {
446 0 : tevent_req_received(stream->readv_req);
447 : }
448 :
449 186797 : if (stream->writev_req) {
450 14 : tevent_req_received(stream->writev_req);
451 : }
452 :
453 186797 : return 0;
454 : }
455 :
456 184590 : struct tstream_context *_tstream_context_create(TALLOC_CTX *mem_ctx,
457 : const struct tstream_context_ops *ops,
458 : void *pstate,
459 : size_t psize,
460 : const char *type,
461 : const char *location)
462 : {
463 : struct tstream_context *stream;
464 184590 : void **ppstate = (void **)pstate;
465 : void *state;
466 :
467 184590 : stream = talloc(mem_ctx, struct tstream_context);
468 184590 : if (stream == NULL) {
469 0 : return NULL;
470 : }
471 184590 : stream->location = location;
472 184590 : stream->ops = ops;
473 184590 : stream->readv_req = NULL;
474 184590 : stream->writev_req = NULL;
475 :
476 184590 : state = talloc_size(stream, psize);
477 184590 : if (state == NULL) {
478 0 : talloc_free(stream);
479 0 : return NULL;
480 : }
481 184590 : talloc_set_name_const(state, type);
482 :
483 184590 : stream->private_data = state;
484 :
485 184590 : talloc_set_destructor(stream, tstream_context_destructor);
486 :
487 184590 : *ppstate = state;
488 184590 : return stream;
489 : }
490 :
491 67255823 : void *_tstream_context_data(struct tstream_context *stream)
492 : {
493 67255823 : return stream->private_data;
494 : }
495 :
496 402562 : ssize_t tstream_pending_bytes(struct tstream_context *stream)
497 : {
498 402562 : return stream->ops->pending_bytes(stream);
499 : }
500 :
501 : struct tstream_readv_state {
502 : const struct tstream_context_ops *ops;
503 : struct tstream_context *stream;
504 : int ret;
505 : };
506 :
507 9521401 : static int tstream_readv_destructor(struct tstream_readv_state *state)
508 : {
509 9521401 : if (state->stream) {
510 9521401 : state->stream->readv_req = NULL;
511 : }
512 :
513 9521401 : return 0;
514 : }
515 :
516 : static void tstream_readv_done(struct tevent_req *subreq);
517 :
518 9519174 : struct tevent_req *tstream_readv_send(TALLOC_CTX *mem_ctx,
519 : struct tevent_context *ev,
520 : struct tstream_context *stream,
521 : struct iovec *vector,
522 : size_t count)
523 : {
524 : struct tevent_req *req;
525 : struct tstream_readv_state *state;
526 : struct tevent_req *subreq;
527 9519174 : int to_read = 0;
528 : size_t i;
529 :
530 9519174 : req = tevent_req_create(mem_ctx, &state,
531 : struct tstream_readv_state);
532 9519174 : if (req == NULL) {
533 0 : return NULL;
534 : }
535 :
536 9519174 : state->ops = stream->ops;
537 9519174 : state->stream = stream;
538 9519174 : state->ret = -1;
539 :
540 : /* first check if the input is ok */
541 : #ifdef IOV_MAX
542 9519174 : if (count > IOV_MAX) {
543 0 : tevent_req_error(req, EMSGSIZE);
544 0 : goto post;
545 : }
546 : #endif
547 :
548 19306669 : for (i=0; i < count; i++) {
549 9787495 : int tmp = to_read;
550 9787495 : tmp += vector[i].iov_len;
551 :
552 9787495 : if (tmp < to_read) {
553 0 : tevent_req_error(req, EMSGSIZE);
554 0 : goto post;
555 : }
556 :
557 9787495 : to_read = tmp;
558 : }
559 :
560 9519174 : if (to_read == 0) {
561 0 : tevent_req_error(req, EINVAL);
562 0 : goto post;
563 : }
564 :
565 9519174 : if (stream->readv_req) {
566 0 : tevent_req_error(req, EBUSY);
567 0 : goto post;
568 : }
569 9519174 : stream->readv_req = req;
570 :
571 9519174 : talloc_set_destructor(state, tstream_readv_destructor);
572 :
573 9519174 : subreq = state->ops->readv_send(state, ev, stream, vector, count);
574 9519174 : if (tevent_req_nomem(subreq, req)) {
575 0 : goto post;
576 : }
577 9519174 : tevent_req_set_callback(subreq, tstream_readv_done, req);
578 :
579 9519174 : return req;
580 :
581 0 : post:
582 0 : tevent_req_post(req, ev);
583 0 : return req;
584 : }
585 :
586 9518643 : static void tstream_readv_done(struct tevent_req *subreq)
587 : {
588 9518643 : struct tevent_req *req = tevent_req_callback_data(subreq,
589 : struct tevent_req);
590 9518643 : struct tstream_readv_state *state = tevent_req_data(req,
591 : struct tstream_readv_state);
592 : ssize_t ret;
593 : int sys_errno;
594 :
595 9518643 : ret = state->ops->readv_recv(subreq, &sys_errno);
596 9518643 : TALLOC_FREE(subreq);
597 9518643 : if (ret == -1) {
598 115631 : tevent_req_error(req, sys_errno);
599 115232 : return;
600 : }
601 :
602 9403012 : state->ret = ret;
603 :
604 9403012 : tevent_req_done(req);
605 : }
606 :
607 9518643 : int tstream_readv_recv(struct tevent_req *req,
608 : int *perrno)
609 : {
610 9518643 : struct tstream_readv_state *state = tevent_req_data(req,
611 : struct tstream_readv_state);
612 : int ret;
613 :
614 9518643 : ret = tsocket_simple_int_recv(req, perrno);
615 9518643 : if (ret == 0) {
616 9403012 : ret = state->ret;
617 : }
618 :
619 9518643 : tevent_req_received(req);
620 9518643 : return ret;
621 : }
622 :
623 : struct tstream_writev_state {
624 : const struct tstream_context_ops *ops;
625 : struct tstream_context *stream;
626 : int ret;
627 : };
628 :
629 2940802 : static int tstream_writev_destructor(struct tstream_writev_state *state)
630 : {
631 2940802 : if (state->stream) {
632 2940802 : state->stream->writev_req = NULL;
633 : }
634 :
635 2940802 : return 0;
636 : }
637 :
638 : static void tstream_writev_done(struct tevent_req *subreq);
639 :
640 2940802 : struct tevent_req *tstream_writev_send(TALLOC_CTX *mem_ctx,
641 : struct tevent_context *ev,
642 : struct tstream_context *stream,
643 : const struct iovec *vector,
644 : size_t count)
645 : {
646 : struct tevent_req *req;
647 : struct tstream_writev_state *state;
648 : struct tevent_req *subreq;
649 2940802 : int to_write = 0;
650 : size_t i;
651 :
652 2940802 : req = tevent_req_create(mem_ctx, &state,
653 : struct tstream_writev_state);
654 2940802 : if (req == NULL) {
655 0 : return NULL;
656 : }
657 :
658 2940802 : state->ops = stream->ops;
659 2940802 : state->stream = stream;
660 2940802 : state->ret = -1;
661 :
662 : /* first check if the input is ok */
663 : #ifdef IOV_MAX
664 2940802 : if (count > IOV_MAX) {
665 0 : tevent_req_error(req, EMSGSIZE);
666 0 : goto post;
667 : }
668 : #endif
669 :
670 7717609 : for (i=0; i < count; i++) {
671 4776807 : int tmp = to_write;
672 4776807 : tmp += vector[i].iov_len;
673 :
674 4776807 : if (tmp < to_write) {
675 0 : tevent_req_error(req, EMSGSIZE);
676 0 : goto post;
677 : }
678 :
679 4776807 : to_write = tmp;
680 : }
681 :
682 2940802 : if (to_write == 0) {
683 0 : tevent_req_error(req, EINVAL);
684 0 : goto post;
685 : }
686 :
687 2940802 : if (stream->writev_req) {
688 0 : tevent_req_error(req, EBUSY);
689 0 : goto post;
690 : }
691 2940802 : stream->writev_req = req;
692 :
693 2940802 : talloc_set_destructor(state, tstream_writev_destructor);
694 :
695 2940802 : subreq = state->ops->writev_send(state, ev, stream, vector, count);
696 2940802 : if (tevent_req_nomem(subreq, req)) {
697 0 : goto post;
698 : }
699 2940802 : tevent_req_set_callback(subreq, tstream_writev_done, req);
700 :
701 2940802 : return req;
702 :
703 0 : post:
704 0 : tevent_req_post(req, ev);
705 0 : return req;
706 : }
707 :
708 2940787 : static void tstream_writev_done(struct tevent_req *subreq)
709 : {
710 2940787 : struct tevent_req *req = tevent_req_callback_data(subreq,
711 : struct tevent_req);
712 2940787 : struct tstream_writev_state *state = tevent_req_data(req,
713 : struct tstream_writev_state);
714 : ssize_t ret;
715 : int sys_errno;
716 :
717 2940787 : ret = state->ops->writev_recv(subreq, &sys_errno);
718 2940787 : if (ret == -1) {
719 13 : tevent_req_error(req, sys_errno);
720 13 : return;
721 : }
722 :
723 2940774 : state->ret = ret;
724 :
725 2940774 : tevent_req_done(req);
726 : }
727 :
728 2940787 : int tstream_writev_recv(struct tevent_req *req,
729 : int *perrno)
730 : {
731 2940787 : struct tstream_writev_state *state = tevent_req_data(req,
732 : struct tstream_writev_state);
733 : int ret;
734 :
735 2940787 : ret = tsocket_simple_int_recv(req, perrno);
736 2940787 : if (ret == 0) {
737 2940774 : ret = state->ret;
738 : }
739 :
740 2940787 : tevent_req_received(req);
741 2940787 : return ret;
742 : }
743 :
744 : struct tstream_disconnect_state {
745 : const struct tstream_context_ops *ops;
746 : };
747 :
748 : static void tstream_disconnect_done(struct tevent_req *subreq);
749 :
750 54149 : struct tevent_req *tstream_disconnect_send(TALLOC_CTX *mem_ctx,
751 : struct tevent_context *ev,
752 : struct tstream_context *stream)
753 : {
754 : struct tevent_req *req;
755 : struct tstream_disconnect_state *state;
756 : struct tevent_req *subreq;
757 :
758 54149 : req = tevent_req_create(mem_ctx, &state,
759 : struct tstream_disconnect_state);
760 54149 : if (req == NULL) {
761 0 : return NULL;
762 : }
763 :
764 54149 : state->ops = stream->ops;
765 :
766 54149 : if (stream->readv_req || stream->writev_req) {
767 0 : tevent_req_error(req, EBUSY);
768 0 : goto post;
769 : }
770 :
771 54149 : subreq = state->ops->disconnect_send(state, ev, stream);
772 54149 : if (tevent_req_nomem(subreq, req)) {
773 0 : goto post;
774 : }
775 54149 : tevent_req_set_callback(subreq, tstream_disconnect_done, req);
776 :
777 54149 : return req;
778 :
779 0 : post:
780 0 : tevent_req_post(req, ev);
781 0 : return req;
782 : }
783 :
784 39666 : static void tstream_disconnect_done(struct tevent_req *subreq)
785 : {
786 39666 : struct tevent_req *req = tevent_req_callback_data(subreq,
787 : struct tevent_req);
788 39666 : struct tstream_disconnect_state *state = tevent_req_data(req,
789 : struct tstream_disconnect_state);
790 : int ret;
791 : int sys_errno;
792 :
793 39666 : ret = state->ops->disconnect_recv(subreq, &sys_errno);
794 39666 : if (ret == -1) {
795 19176 : tevent_req_error(req, sys_errno);
796 19176 : return;
797 : }
798 :
799 20490 : tevent_req_done(req);
800 : }
801 :
802 39666 : int tstream_disconnect_recv(struct tevent_req *req,
803 : int *perrno)
804 : {
805 : int ret;
806 :
807 39666 : ret = tsocket_simple_int_recv(req, perrno);
808 :
809 39666 : tevent_req_received(req);
810 39666 : return ret;
811 : }
812 :
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