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 30389573 : int tsocket_simple_int_recv(struct tevent_req *req, int *perrno)
30 : {
31 : enum tevent_req_state state;
32 : uint64_t error;
33 :
34 30389573 : if (!tevent_req_is_error(req, &state, &error)) {
35 30061812 : return 0;
36 : }
37 :
38 327761 : 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 327757 : case TEVENT_REQ_USER_ERROR:
46 327757 : *perrno = (int)error;
47 327757 : return -1;
48 0 : default:
49 0 : break;
50 : }
51 :
52 0 : *perrno = EIO;
53 0 : return -1;
54 : }
55 :
56 432593 : 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 432593 : void **ppstate = (void **)pstate;
64 : struct tsocket_address *addr;
65 :
66 432593 : addr = talloc_zero(mem_ctx, struct tsocket_address);
67 432593 : if (!addr) {
68 0 : return NULL;
69 : }
70 432593 : addr->ops = ops;
71 432593 : addr->location = location;
72 432593 : addr->private_data = talloc_size(addr, psize);
73 432593 : if (!addr->private_data) {
74 0 : talloc_free(addr);
75 0 : return NULL;
76 : }
77 432593 : talloc_set_name_const(addr->private_data, type);
78 :
79 432593 : *ppstate = addr->private_data;
80 432593 : return addr;
81 : }
82 :
83 508234 : char *tsocket_address_string(const struct tsocket_address *addr,
84 : TALLOC_CTX *mem_ctx)
85 : {
86 508234 : if (!addr) {
87 0 : return talloc_strdup(mem_ctx, "NULL");
88 : }
89 508234 : return addr->ops->string(addr, mem_ctx);
90 : }
91 :
92 125558 : struct tsocket_address *_tsocket_address_copy(const struct tsocket_address *addr,
93 : TALLOC_CTX *mem_ctx,
94 : const char *location)
95 : {
96 125558 : 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 3368 : static int tdgram_context_destructor(struct tdgram_context *dgram)
109 : {
110 3368 : if (dgram->recvfrom_req) {
111 0 : tevent_req_received(dgram->recvfrom_req);
112 : }
113 :
114 3368 : if (dgram->sendto_req) {
115 0 : tevent_req_received(dgram->sendto_req);
116 : }
117 :
118 3368 : return 0;
119 : }
120 :
121 2982 : 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 2982 : void **ppstate = (void **)pstate;
130 : void *state;
131 :
132 2982 : dgram = talloc(mem_ctx, struct tdgram_context);
133 2982 : if (dgram == NULL) {
134 0 : return NULL;
135 : }
136 2982 : dgram->location = location;
137 2982 : dgram->ops = ops;
138 2982 : dgram->recvfrom_req = NULL;
139 2982 : dgram->sendto_req = NULL;
140 :
141 2982 : state = talloc_size(dgram, psize);
142 2982 : if (state == NULL) {
143 0 : talloc_free(dgram);
144 0 : return NULL;
145 : }
146 2982 : talloc_set_name_const(state, type);
147 :
148 2982 : dgram->private_data = state;
149 :
150 2982 : talloc_set_destructor(dgram, tdgram_context_destructor);
151 :
152 2982 : *ppstate = state;
153 2982 : return dgram;
154 : }
155 :
156 143516 : void *_tdgram_context_data(struct tdgram_context *dgram)
157 : {
158 143516 : 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 24238 : static int tdgram_recvfrom_destructor(struct tdgram_recvfrom_state *state)
170 : {
171 24238 : if (state->dgram) {
172 24238 : state->dgram->recvfrom_req = NULL;
173 : }
174 :
175 24238 : return 0;
176 : }
177 :
178 : static void tdgram_recvfrom_done(struct tevent_req *subreq);
179 :
180 23852 : 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 23852 : req = tevent_req_create(mem_ctx, &state,
189 : struct tdgram_recvfrom_state);
190 23852 : if (req == NULL) {
191 0 : return NULL;
192 : }
193 :
194 23852 : state->ops = dgram->ops;
195 23852 : state->dgram = dgram;
196 23852 : state->buf = NULL;
197 23852 : state->len = 0;
198 23852 : state->src = NULL;
199 :
200 23852 : if (dgram->recvfrom_req) {
201 0 : tevent_req_error(req, EBUSY);
202 0 : goto post;
203 : }
204 23852 : dgram->recvfrom_req = req;
205 :
206 23852 : talloc_set_destructor(state, tdgram_recvfrom_destructor);
207 :
208 23852 : subreq = state->ops->recvfrom_send(state, ev, dgram);
209 23852 : if (tevent_req_nomem(subreq, req)) {
210 0 : goto post;
211 : }
212 23852 : tevent_req_set_callback(subreq, tdgram_recvfrom_done, req);
213 :
214 23852 : return req;
215 :
216 0 : post:
217 0 : tevent_req_post(req, ev);
218 0 : return req;
219 : }
220 :
221 22955 : static void tdgram_recvfrom_done(struct tevent_req *subreq)
222 : {
223 22955 : struct tevent_req *req = tevent_req_callback_data(subreq,
224 : struct tevent_req);
225 22955 : struct tdgram_recvfrom_state *state = tevent_req_data(req,
226 : struct tdgram_recvfrom_state);
227 : ssize_t ret;
228 : int sys_errno;
229 :
230 22955 : ret = state->ops->recvfrom_recv(subreq, &sys_errno, state,
231 : &state->buf, &state->src);
232 22955 : if (ret == -1) {
233 4 : tevent_req_error(req, sys_errno);
234 4 : return;
235 : }
236 :
237 22951 : state->len = ret;
238 :
239 22951 : tevent_req_done(req);
240 : }
241 :
242 22955 : 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 22955 : struct tdgram_recvfrom_state *state = tevent_req_data(req,
249 : struct tdgram_recvfrom_state);
250 : ssize_t ret;
251 :
252 22955 : ret = tsocket_simple_int_recv(req, perrno);
253 22955 : if (ret == 0) {
254 22951 : *buf = talloc_move(mem_ctx, &state->buf);
255 22951 : ret = state->len;
256 22951 : if (src) {
257 21794 : *src = talloc_move(mem_ctx, &state->src);
258 : }
259 : }
260 :
261 22955 : tevent_req_received(req);
262 22955 : 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 23086 : static int tdgram_sendto_destructor(struct tdgram_sendto_state *state)
272 : {
273 23086 : if (state->dgram) {
274 23086 : state->dgram->sendto_req = NULL;
275 : }
276 :
277 23086 : return 0;
278 : }
279 :
280 : static void tdgram_sendto_done(struct tevent_req *subreq);
281 :
282 23086 : 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 23086 : req = tevent_req_create(mem_ctx, &state,
293 : struct tdgram_sendto_state);
294 23086 : if (req == NULL) {
295 0 : return NULL;
296 : }
297 :
298 23086 : state->ops = dgram->ops;
299 23086 : state->dgram = dgram;
300 23086 : state->ret = -1;
301 :
302 23086 : if (len == 0) {
303 0 : tevent_req_error(req, EINVAL);
304 0 : goto post;
305 : }
306 :
307 23086 : if (dgram->sendto_req) {
308 0 : tevent_req_error(req, EBUSY);
309 0 : goto post;
310 : }
311 23086 : dgram->sendto_req = req;
312 :
313 23086 : talloc_set_destructor(state, tdgram_sendto_destructor);
314 :
315 23086 : subreq = state->ops->sendto_send(state, ev, dgram,
316 : buf, len, dst);
317 23086 : if (tevent_req_nomem(subreq, req)) {
318 0 : goto post;
319 : }
320 23086 : tevent_req_set_callback(subreq, tdgram_sendto_done, req);
321 :
322 23086 : return req;
323 :
324 0 : post:
325 0 : tevent_req_post(req, ev);
326 0 : return req;
327 : }
328 :
329 23086 : static void tdgram_sendto_done(struct tevent_req *subreq)
330 : {
331 23086 : struct tevent_req *req = tevent_req_callback_data(subreq,
332 : struct tevent_req);
333 23086 : struct tdgram_sendto_state *state = tevent_req_data(req,
334 : struct tdgram_sendto_state);
335 : ssize_t ret;
336 : int sys_errno;
337 :
338 23086 : ret = state->ops->sendto_recv(subreq, &sys_errno);
339 23086 : if (ret == -1) {
340 34 : tevent_req_error(req, sys_errno);
341 34 : return;
342 : }
343 :
344 23052 : state->ret = ret;
345 :
346 23052 : tevent_req_done(req);
347 : }
348 :
349 23086 : ssize_t tdgram_sendto_recv(struct tevent_req *req,
350 : int *perrno)
351 : {
352 23086 : struct tdgram_sendto_state *state = tevent_req_data(req,
353 : struct tdgram_sendto_state);
354 : ssize_t ret;
355 :
356 23086 : ret = tsocket_simple_int_recv(req, perrno);
357 23086 : if (ret == 0) {
358 23052 : ret = state->ret;
359 : }
360 :
361 23086 : tevent_req_received(req);
362 23086 : 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 196669 : static int tstream_context_destructor(struct tstream_context *stream)
444 : {
445 196669 : if (stream->readv_req) {
446 0 : tevent_req_received(stream->readv_req);
447 : }
448 :
449 196669 : if (stream->writev_req) {
450 14 : tevent_req_received(stream->writev_req);
451 : }
452 :
453 196669 : return 0;
454 : }
455 :
456 194436 : 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 194436 : void **ppstate = (void **)pstate;
465 : void *state;
466 :
467 194436 : stream = talloc(mem_ctx, struct tstream_context);
468 194436 : if (stream == NULL) {
469 0 : return NULL;
470 : }
471 194436 : stream->location = location;
472 194436 : stream->ops = ops;
473 194436 : stream->readv_req = NULL;
474 194436 : stream->writev_req = NULL;
475 :
476 194436 : state = talloc_size(stream, psize);
477 194436 : if (state == NULL) {
478 0 : talloc_free(stream);
479 0 : return NULL;
480 : }
481 194436 : talloc_set_name_const(state, type);
482 :
483 194436 : stream->private_data = state;
484 :
485 194436 : talloc_set_destructor(stream, tstream_context_destructor);
486 :
487 194436 : *ppstate = state;
488 194436 : return stream;
489 : }
490 :
491 69293994 : void *_tstream_context_data(struct tstream_context *stream)
492 : {
493 69293994 : return stream->private_data;
494 : }
495 :
496 402518 : ssize_t tstream_pending_bytes(struct tstream_context *stream)
497 : {
498 402518 : 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 9947030 : static int tstream_readv_destructor(struct tstream_readv_state *state)
508 : {
509 9947030 : if (state->stream) {
510 9947030 : state->stream->readv_req = NULL;
511 : }
512 :
513 9947030 : return 0;
514 : }
515 :
516 : static void tstream_readv_done(struct tevent_req *subreq);
517 :
518 9944785 : 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 9944785 : int to_read = 0;
528 : size_t i;
529 :
530 9944785 : req = tevent_req_create(mem_ctx, &state,
531 : struct tstream_readv_state);
532 9944785 : if (req == NULL) {
533 0 : return NULL;
534 : }
535 :
536 9944785 : state->ops = stream->ops;
537 9944785 : state->stream = stream;
538 9944785 : state->ret = -1;
539 :
540 : /* first check if the input is ok */
541 : #ifdef IOV_MAX
542 9944785 : if (count > IOV_MAX) {
543 0 : tevent_req_error(req, EMSGSIZE);
544 0 : goto post;
545 : }
546 : #endif
547 :
548 20157908 : for (i=0; i < count; i++) {
549 10213123 : int tmp = to_read;
550 10213123 : tmp += vector[i].iov_len;
551 :
552 10213123 : if (tmp < to_read) {
553 0 : tevent_req_error(req, EMSGSIZE);
554 0 : goto post;
555 : }
556 :
557 10213123 : to_read = tmp;
558 : }
559 :
560 9944785 : if (to_read == 0) {
561 0 : tevent_req_error(req, EINVAL);
562 0 : goto post;
563 : }
564 :
565 9944785 : if (stream->readv_req) {
566 0 : tevent_req_error(req, EBUSY);
567 0 : goto post;
568 : }
569 9944785 : stream->readv_req = req;
570 :
571 9944785 : talloc_set_destructor(state, tstream_readv_destructor);
572 :
573 9944785 : subreq = state->ops->readv_send(state, ev, stream, vector, count);
574 9944785 : if (tevent_req_nomem(subreq, req)) {
575 0 : goto post;
576 : }
577 9944785 : tevent_req_set_callback(subreq, tstream_readv_done, req);
578 :
579 9944785 : return req;
580 :
581 0 : post:
582 0 : tevent_req_post(req, ev);
583 0 : return req;
584 : }
585 :
586 9944222 : static void tstream_readv_done(struct tevent_req *subreq)
587 : {
588 9944222 : struct tevent_req *req = tevent_req_callback_data(subreq,
589 : struct tevent_req);
590 9944222 : struct tstream_readv_state *state = tevent_req_data(req,
591 : struct tstream_readv_state);
592 : ssize_t ret;
593 : int sys_errno;
594 :
595 9944222 : ret = state->ops->readv_recv(subreq, &sys_errno);
596 9944222 : TALLOC_FREE(subreq);
597 9944222 : if (ret == -1) {
598 120457 : tevent_req_error(req, sys_errno);
599 120058 : return;
600 : }
601 :
602 9823765 : state->ret = ret;
603 :
604 9823765 : tevent_req_done(req);
605 : }
606 :
607 9944222 : int tstream_readv_recv(struct tevent_req *req,
608 : int *perrno)
609 : {
610 9944222 : struct tstream_readv_state *state = tevent_req_data(req,
611 : struct tstream_readv_state);
612 : int ret;
613 :
614 9944222 : ret = tsocket_simple_int_recv(req, perrno);
615 9944222 : if (ret == 0) {
616 9823765 : ret = state->ret;
617 : }
618 :
619 9944222 : tevent_req_received(req);
620 9944222 : 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 3120734 : static int tstream_writev_destructor(struct tstream_writev_state *state)
630 : {
631 3120734 : if (state->stream) {
632 3120734 : state->stream->writev_req = NULL;
633 : }
634 :
635 3120734 : return 0;
636 : }
637 :
638 : static void tstream_writev_done(struct tevent_req *subreq);
639 :
640 3120734 : 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 3120734 : int to_write = 0;
650 : size_t i;
651 :
652 3120734 : req = tevent_req_create(mem_ctx, &state,
653 : struct tstream_writev_state);
654 3120734 : if (req == NULL) {
655 0 : return NULL;
656 : }
657 :
658 3120734 : state->ops = stream->ops;
659 3120734 : state->stream = stream;
660 3120734 : state->ret = -1;
661 :
662 : /* first check if the input is ok */
663 : #ifdef IOV_MAX
664 3120734 : if (count > IOV_MAX) {
665 0 : tevent_req_error(req, EMSGSIZE);
666 0 : goto post;
667 : }
668 : #endif
669 :
670 8191974 : for (i=0; i < count; i++) {
671 5071240 : int tmp = to_write;
672 5071240 : tmp += vector[i].iov_len;
673 :
674 5071240 : if (tmp < to_write) {
675 0 : tevent_req_error(req, EMSGSIZE);
676 0 : goto post;
677 : }
678 :
679 5071240 : to_write = tmp;
680 : }
681 :
682 3120734 : if (to_write == 0) {
683 0 : tevent_req_error(req, EINVAL);
684 0 : goto post;
685 : }
686 :
687 3120734 : if (stream->writev_req) {
688 0 : tevent_req_error(req, EBUSY);
689 0 : goto post;
690 : }
691 3120734 : stream->writev_req = req;
692 :
693 3120734 : talloc_set_destructor(state, tstream_writev_destructor);
694 :
695 3120734 : subreq = state->ops->writev_send(state, ev, stream, vector, count);
696 3120734 : if (tevent_req_nomem(subreq, req)) {
697 0 : goto post;
698 : }
699 3120734 : tevent_req_set_callback(subreq, tstream_writev_done, req);
700 :
701 3120734 : return req;
702 :
703 0 : post:
704 0 : tevent_req_post(req, ev);
705 0 : return req;
706 : }
707 :
708 3120719 : static void tstream_writev_done(struct tevent_req *subreq)
709 : {
710 3120719 : struct tevent_req *req = tevent_req_callback_data(subreq,
711 : struct tevent_req);
712 3120719 : struct tstream_writev_state *state = tevent_req_data(req,
713 : struct tstream_writev_state);
714 : ssize_t ret;
715 : int sys_errno;
716 :
717 3120719 : ret = state->ops->writev_recv(subreq, &sys_errno);
718 3120719 : if (ret == -1) {
719 13 : tevent_req_error(req, sys_errno);
720 13 : return;
721 : }
722 :
723 3120706 : state->ret = ret;
724 :
725 3120706 : tevent_req_done(req);
726 : }
727 :
728 3120719 : int tstream_writev_recv(struct tevent_req *req,
729 : int *perrno)
730 : {
731 3120719 : struct tstream_writev_state *state = tevent_req_data(req,
732 : struct tstream_writev_state);
733 : int ret;
734 :
735 3120719 : ret = tsocket_simple_int_recv(req, perrno);
736 3120719 : if (ret == 0) {
737 3120706 : ret = state->ret;
738 : }
739 :
740 3120719 : tevent_req_received(req);
741 3120719 : 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 59206 : 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 59206 : req = tevent_req_create(mem_ctx, &state,
759 : struct tstream_disconnect_state);
760 59206 : if (req == NULL) {
761 0 : return NULL;
762 : }
763 :
764 59206 : state->ops = stream->ops;
765 :
766 59206 : if (stream->readv_req || stream->writev_req) {
767 0 : tevent_req_error(req, EBUSY);
768 0 : goto post;
769 : }
770 :
771 59206 : subreq = state->ops->disconnect_send(state, ev, stream);
772 59206 : if (tevent_req_nomem(subreq, req)) {
773 0 : goto post;
774 : }
775 59206 : tevent_req_set_callback(subreq, tstream_disconnect_done, req);
776 :
777 59206 : return req;
778 :
779 0 : post:
780 0 : tevent_req_post(req, ev);
781 0 : return req;
782 : }
783 :
784 44655 : static void tstream_disconnect_done(struct tevent_req *subreq)
785 : {
786 44655 : struct tevent_req *req = tevent_req_callback_data(subreq,
787 : struct tevent_req);
788 44655 : struct tstream_disconnect_state *state = tevent_req_data(req,
789 : struct tstream_disconnect_state);
790 : int ret;
791 : int sys_errno;
792 :
793 44655 : ret = state->ops->disconnect_recv(subreq, &sys_errno);
794 44655 : if (ret == -1) {
795 21665 : tevent_req_error(req, sys_errno);
796 21665 : return;
797 : }
798 :
799 22990 : tevent_req_done(req);
800 : }
801 :
802 44655 : int tstream_disconnect_recv(struct tevent_req *req,
803 : int *perrno)
804 : {
805 : int ret;
806 :
807 44655 : ret = tsocket_simple_int_recv(req, perrno);
808 :
809 44655 : tevent_req_received(req);
810 44655 : return ret;
811 : }
812 :
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