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s3:libsmb/clitrans: move MID handling to the end of cli_trans_send() and add a comment
[Samba.git] / source3 / libsmb / clitrans.c
blob82a73ee2c077ee52ded716fe8880fcdb10fd6994
1 /*
2 Unix SMB/CIFS implementation.
3 client transaction calls
4 Copyright (C) Andrew Tridgell 1994-1998
5
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 3 of the License, or
9 (at your option) any later version.
10
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>.
18 */
19
20 #include "includes.h"
21 #include "libsmb/libsmb.h"
22 #include "../lib/util/tevent_ntstatus.h"
23 #include "async_smb.h"
24
25 struct trans_recvblob {
26 uint8_t *data;
27 uint32_t max, total, received;
28 };
29
30 struct cli_trans_state {
31 struct cli_state *cli;
32 struct event_context *ev;
33 uint8_t cmd;
34 uint16_t mid;
35 uint32_t seqnum;
36 const char *pipe_name;
37 uint8_t *pipe_name_conv;
38 size_t pipe_name_conv_len;
39 uint16_t fid;
40 uint16_t function;
41 int flags;
42 uint16_t *setup;
43 uint8_t num_setup, max_setup;
44 uint8_t *param;
45 uint32_t num_param, param_sent;
46 uint8_t *data;
47 uint32_t num_data, data_sent;
48
49 uint8_t num_rsetup;
50 uint16_t *rsetup;
51 struct trans_recvblob rparam;
52 struct trans_recvblob rdata;
53 uint16_t recv_flags2;
54
55 struct iovec iov[6];
56 uint8_t pad[4];
57 uint8_t zero_pad[4];
58 uint16_t vwv[32];
59 };
60
61 static NTSTATUS cli_pull_trans(uint8_t *inbuf,
62 uint8_t wct, uint16_t *vwv,
63 uint16_t num_bytes, uint8_t *bytes,
64 uint8_t smb_cmd, bool expect_first_reply,
65 uint8_t *pnum_setup, uint16_t **psetup,
66 uint32_t *ptotal_param, uint32_t *pnum_param,
67 uint32_t *pparam_disp, uint8_t **pparam,
68 uint32_t *ptotal_data, uint32_t *pnum_data,
69 uint32_t *pdata_disp, uint8_t **pdata)
70 {
71 uint32_t param_ofs, data_ofs;
72
73 if (expect_first_reply) {
74 if ((wct != 0) || (num_bytes != 0)) {
75 return NT_STATUS_INVALID_NETWORK_RESPONSE;
76 }
77 return NT_STATUS_OK;
78 }
79
80 switch (smb_cmd) {
81 case SMBtrans:
82 case SMBtrans2:
83 if (wct < 10) {
84 return NT_STATUS_INVALID_NETWORK_RESPONSE;
85 }
86 *ptotal_param = SVAL(vwv + 0, 0);
87 *ptotal_data = SVAL(vwv + 1, 0);
88 *pnum_param = SVAL(vwv + 3, 0);
89 param_ofs = SVAL(vwv + 4, 0);
90 *pparam_disp = SVAL(vwv + 5, 0);
91 *pnum_data = SVAL(vwv + 6, 0);
92 data_ofs = SVAL(vwv + 7, 0);
93 *pdata_disp = SVAL(vwv + 8, 0);
94 *pnum_setup = CVAL(vwv + 9, 0);
95 if (wct < 10 + (*pnum_setup)) {
96 return NT_STATUS_INVALID_NETWORK_RESPONSE;
97 }
98 *psetup = vwv + 10;
99
100 break;
101 case SMBnttrans:
102 if (wct < 18) {
103 return NT_STATUS_INVALID_NETWORK_RESPONSE;
104 }
105 *ptotal_param = IVAL(vwv, 3);
106 *ptotal_data = IVAL(vwv, 7);
107 *pnum_param = IVAL(vwv, 11);
108 param_ofs = IVAL(vwv, 15);
109 *pparam_disp = IVAL(vwv, 19);
110 *pnum_data = IVAL(vwv, 23);
111 data_ofs = IVAL(vwv, 27);
112 *pdata_disp = IVAL(vwv, 31);
113 *pnum_setup = CVAL(vwv, 35);
114 *psetup = vwv + 18;
115 break;
116
117 default:
118 return NT_STATUS_INTERNAL_ERROR;
119 }
120
121 /*
122 * Check for buffer overflows. data_ofs needs to be checked against
123 * the incoming buffer length, data_disp against the total
124 * length. Likewise for param_ofs/param_disp.
125 */
126
127 if (trans_oob(smb_len(inbuf), param_ofs, *pnum_param)
128 || trans_oob(*ptotal_param, *pparam_disp, *pnum_param)
129 || trans_oob(smb_len(inbuf), data_ofs, *pnum_data)
130 || trans_oob(*ptotal_data, *pdata_disp, *pnum_data)) {
131 return NT_STATUS_INVALID_NETWORK_RESPONSE;
132 }
133
134 *pparam = (uint8_t *)inbuf + 4 + param_ofs;
135 *pdata = (uint8_t *)inbuf + 4 + data_ofs;
136
137 return NT_STATUS_OK;
138 }
139
140 static NTSTATUS cli_trans_pull_blob(TALLOC_CTX *mem_ctx,
141 struct trans_recvblob *blob,
142 uint32_t total, uint32_t thistime,
143 uint8_t *buf, uint32_t displacement)
144 {
145 if (blob->data == NULL) {
146 if (total > blob->max) {
147 return NT_STATUS_INVALID_NETWORK_RESPONSE;
148 }
149 blob->total = total;
150 blob->data = talloc_array(mem_ctx, uint8_t, total);
151 if (blob->data == NULL) {
152 return NT_STATUS_NO_MEMORY;
153 }
154 }
155
156 if (total > blob->total) {
157 return NT_STATUS_INVALID_NETWORK_RESPONSE;
158 }
159
160 if (thistime) {
161 memcpy(blob->data + displacement, buf, thistime);
162 blob->received += thistime;
163 }
164
165 return NT_STATUS_OK;
166 }
167
168 static void cli_trans_format(struct cli_trans_state *state, uint8_t *pwct,
169 int *piov_count)
170 {
171 uint8_t wct = 0;
172 struct iovec *iov = state->iov;
173 uint8_t *pad = state->pad;
174 uint16_t *vwv = state->vwv;
175 uint32_t param_offset;
176 uint32_t this_param = 0;
177 uint32_t param_pad;
178 uint32_t data_offset;
179 uint32_t this_data = 0;
180 uint32_t data_pad;
181 uint32_t useable_space;
182 uint8_t cmd;
183
184 cmd = state->cmd;
185
186 if ((state->param_sent != 0) || (state->data_sent != 0)) {
187 /* The secondary commands are one after the primary ones */
188 cmd += 1;
189 }
190
191 param_offset = smb_size - 4;
192
193 switch (cmd) {
194 case SMBtrans:
195 pad[0] = 0;
196 iov[0].iov_base = (void *)pad;
197 iov[0].iov_len = 1;
198 iov[1].iov_base = (void *)state->pipe_name_conv;
199 iov[1].iov_len = state->pipe_name_conv_len;
200 wct = 14 + state->num_setup;
201 param_offset += iov[0].iov_len + iov[1].iov_len;
202 iov += 2;
203 break;
204 case SMBtrans2:
205 pad[0] = 0;
206 pad[1] = 'D'; /* Copy this from "old" 3.0 behaviour */
207 pad[2] = ' ';
208 iov[0].iov_base = (void *)pad;
209 iov[0].iov_len = 3;
210 wct = 14 + state->num_setup;
211 param_offset += 3;
212 iov += 1;
213 break;
214 case SMBtranss:
215 wct = 8;
216 break;
217 case SMBtranss2:
218 wct = 9;
219 break;
220 case SMBnttrans:
221 wct = 19 + state->num_setup;
222 break;
223 case SMBnttranss:
224 wct = 18;
225 break;
226 }
227
228 param_offset += wct * sizeof(uint16_t);
229 useable_space = state->cli->max_xmit - param_offset;
230
231 param_pad = param_offset % 4;
232 if (param_pad > 0) {
233 param_pad = MIN(param_pad, useable_space);
234 iov[0].iov_base = (void *)state->zero_pad;
235 iov[0].iov_len = param_pad;
236 iov += 1;
237 param_offset += param_pad;
238 }
239 useable_space = state->cli->max_xmit - param_offset;
240
241 if (state->param_sent < state->num_param) {
242 this_param = MIN(state->num_param - state->param_sent,
243 useable_space);
244 iov[0].iov_base = (void *)(state->param + state->param_sent);
245 iov[0].iov_len = this_param;
246 iov += 1;
247 }
248
249 data_offset = param_offset + this_param;
250 useable_space = state->cli->max_xmit - data_offset;
251
252 data_pad = data_offset % 4;
253 if (data_pad > 0) {
254 data_pad = MIN(data_pad, useable_space);
255 iov[0].iov_base = (void *)state->zero_pad;
256 iov[0].iov_len = data_pad;
257 iov += 1;
258 data_offset += data_pad;
259 }
260 useable_space = state->cli->max_xmit - data_offset;
261
262 if (state->data_sent < state->num_data) {
263 this_data = MIN(state->num_data - state->data_sent,
264 useable_space);
265 iov[0].iov_base = (void *)(state->data + state->data_sent);
266 iov[0].iov_len = this_data;
267 iov += 1;
268 }
269
270 DEBUG(10, ("num_setup=%u, max_setup=%u, "
271 "param_total=%u, this_param=%u, max_param=%u, "
272 "data_total=%u, this_data=%u, max_data=%u, "
273 "param_offset=%u, param_pad=%u, param_disp=%u, "
274 "data_offset=%u, data_pad=%u, data_disp=%u\n",
275 (unsigned)state->num_setup, (unsigned)state->max_setup,
276 (unsigned)state->num_param, (unsigned)this_param,
277 (unsigned)state->rparam.max,
278 (unsigned)state->num_data, (unsigned)this_data,
279 (unsigned)state->rdata.max,
280 (unsigned)param_offset, (unsigned)param_pad,
281 (unsigned)state->param_sent,
282 (unsigned)data_offset, (unsigned)data_pad,
283 (unsigned)state->data_sent));
284
285 switch (cmd) {
286 case SMBtrans:
287 case SMBtrans2:
288 SSVAL(vwv + 0, 0, state->num_param);
289 SSVAL(vwv + 1, 0, state->num_data);
290 SSVAL(vwv + 2, 0, state->rparam.max);
291 SSVAL(vwv + 3, 0, state->rdata.max);
292 SCVAL(vwv + 4, 0, state->max_setup);
293 SCVAL(vwv + 4, 1, 0); /* reserved */
294 SSVAL(vwv + 5, 0, state->flags);
295 SIVAL(vwv + 6, 0, 0); /* timeout */
296 SSVAL(vwv + 8, 0, 0); /* reserved */
297 SSVAL(vwv + 9, 0, this_param);
298 SSVAL(vwv +10, 0, param_offset);
299 SSVAL(vwv +11, 0, this_data);
300 SSVAL(vwv +12, 0, data_offset);
301 SCVAL(vwv +13, 0, state->num_setup);
302 SCVAL(vwv +13, 1, 0); /* reserved */
303 memcpy(vwv + 14, state->setup,
304 sizeof(uint16_t) * state->num_setup);
305 break;
306 case SMBtranss:
307 case SMBtranss2:
308 SSVAL(vwv + 0, 0, state->num_param);
309 SSVAL(vwv + 1, 0, state->num_data);
310 SSVAL(vwv + 2, 0, this_param);
311 SSVAL(vwv + 3, 0, param_offset);
312 SSVAL(vwv + 4, 0, state->param_sent);
313 SSVAL(vwv + 5, 0, this_data);
314 SSVAL(vwv + 6, 0, data_offset);
315 SSVAL(vwv + 7, 0, state->data_sent);
316 if (cmd == SMBtranss2) {
317 SSVAL(vwv + 8, 0, state->fid);
318 }
319 break;
320 case SMBnttrans:
321 SCVAL(vwv + 0, 0, state->max_setup);
322 SSVAL(vwv + 0, 1, 0); /* reserved */
323 SIVAL(vwv + 1, 1, state->num_param);
324 SIVAL(vwv + 3, 1, state->num_data);
325 SIVAL(vwv + 5, 1, state->rparam.max);
326 SIVAL(vwv + 7, 1, state->rdata.max);
327 SIVAL(vwv + 9, 1, this_param);
328 SIVAL(vwv +11, 1, param_offset);
329 SIVAL(vwv +13, 1, this_data);
330 SIVAL(vwv +15, 1, data_offset);
331 SCVAL(vwv +17, 1, state->num_setup);
332 SSVAL(vwv +18, 0, state->function);
333 memcpy(vwv + 19, state->setup,
334 sizeof(uint16_t) * state->num_setup);
335 break;
336 case SMBnttranss:
337 SSVAL(vwv + 0, 0, 0); /* reserved */
338 SCVAL(vwv + 1, 0, 0); /* reserved */
339 SIVAL(vwv + 1, 1, state->num_param);
340 SIVAL(vwv + 3, 1, state->num_data);
341 SIVAL(vwv + 5, 1, this_param);
342 SIVAL(vwv + 7, 1, param_offset);
343 SIVAL(vwv + 9, 1, state->param_sent);
344 SIVAL(vwv +11, 1, this_data);
345 SIVAL(vwv +13, 1, data_offset);
346 SIVAL(vwv +15, 1, state->data_sent);
347 SCVAL(vwv +17, 1, 0); /* reserved */
348 break;
349 }
350
351 state->param_sent += this_param;
352 state->data_sent += this_data;
353
354 *pwct = wct;
355 *piov_count = iov - state->iov;
356 }
357
358 static void cli_trans_done(struct tevent_req *subreq);
359
360 struct tevent_req *cli_trans_send(
361 TALLOC_CTX *mem_ctx, struct event_context *ev,
362 struct cli_state *cli, uint8_t cmd,
363 const char *pipe_name, uint16_t fid, uint16_t function, int flags,
364 uint16_t *setup, uint8_t num_setup, uint8_t max_setup,
365 uint8_t *param, uint32_t num_param, uint32_t max_param,
366 uint8_t *data, uint32_t num_data, uint32_t max_data)
367 {
368 struct tevent_req *req, *subreq;
369 struct cli_trans_state *state;
370 int iov_count;
371 uint8_t wct;
372 NTSTATUS status;
373
374 req = tevent_req_create(mem_ctx, &state, struct cli_trans_state);
375 if (req == NULL) {
376 return NULL;
377 }
378
379 if ((cmd == SMBtrans) || (cmd == SMBtrans2)) {
380 if ((num_param > 0xffff) || (max_param > 0xffff)
381 || (num_data > 0xffff) || (max_data > 0xffff)) {
382 DEBUG(3, ("Attempt to send invalid trans2 request "
383 "(setup %u, params %u/%u, data %u/%u)\n",
384 (unsigned)num_setup,
385 (unsigned)num_param, (unsigned)max_param,
386 (unsigned)num_data, (unsigned)max_data));
387 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
388 return tevent_req_post(req, ev);
389 }
390 }
391
392 /*
393 * The largest wct will be for nttrans (19+num_setup). Make sure we
394 * don't overflow state->vwv in cli_trans_format.
395 */
396
397 if ((num_setup + 19) > ARRAY_SIZE(state->vwv)) {
398 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
399 return tevent_req_post(req, ev);
400 }
401
402 state->cli = cli;
403 state->ev = ev;
404 state->cmd = cmd;
405 state->flags = flags;
406 state->num_rsetup = 0;
407 state->rsetup = NULL;
408 ZERO_STRUCT(state->rparam);
409 ZERO_STRUCT(state->rdata);
410
411 if ((pipe_name != NULL)
412 && (!convert_string_talloc(state, CH_UNIX,
413 cli_ucs2(cli) ? CH_UTF16LE : CH_DOS,
414 pipe_name, strlen(pipe_name) + 1,
415 &state->pipe_name_conv,
416 &state->pipe_name_conv_len))) {
417 tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
418 return tevent_req_post(req, ev);
419 }
420 state->fid = fid; /* trans2 */
421 state->function = function; /* nttrans */
422
423 state->setup = setup;
424 state->num_setup = num_setup;
425 state->max_setup = max_setup;
426
427 state->param = param;
428 state->num_param = num_param;
429 state->param_sent = 0;
430 state->rparam.max = max_param;
431
432 state->data = data;
433 state->num_data = num_data;
434 state->data_sent = 0;
435 state->rdata.max = max_data;
436
437 cli_trans_format(state, &wct, &iov_count);
438
439 subreq = cli_smb_req_create(state, ev, cli, cmd, 0, wct, state->vwv,
440 iov_count, state->iov);
441 if (tevent_req_nomem(subreq, req)) {
442 return tevent_req_post(req, ev);
443 }
444 status = cli_smb_req_send(subreq);
445 if (!NT_STATUS_IS_OK(status)) {
446 tevent_req_nterror(req, status);
447 return tevent_req_post(req, state->ev);
448 }
449 tevent_req_set_callback(subreq, cli_trans_done, req);
450
451 /*
452 * Now get the MID of the primary request
453 * and mark it as persistent. This means
454 * we will able to send and receive multiple
455 * SMB pdus using this MID in both directions
456 * (including correct SMB signing).
457 */
458 state->mid = cli_smb_req_mid(subreq);
459 cli_state_seqnum_persistent(cli, state->mid);
460
461 return req;
462 }
463
464 static void cli_trans_done(struct tevent_req *subreq)
465 {
466 struct tevent_req *req = tevent_req_callback_data(
467 subreq, struct tevent_req);
468 struct cli_trans_state *state = tevent_req_data(
469 req, struct cli_trans_state);
470 NTSTATUS status;
471 bool sent_all;
472 uint8_t wct;
473 uint16_t *vwv;
474 uint32_t num_bytes;
475 uint8_t *bytes;
476 uint8_t *inbuf;
477 uint8_t num_setup = 0;
478 uint16_t *setup = NULL;
479 uint32_t total_param = 0;
480 uint32_t num_param = 0;
481 uint32_t param_disp = 0;
482 uint32_t total_data = 0;
483 uint32_t num_data = 0;
484 uint32_t data_disp = 0;
485 uint8_t *param = NULL;
486 uint8_t *data = NULL;
487
488 status = cli_smb_recv(subreq, state, &inbuf, 0, &wct, &vwv,
489 &num_bytes, &bytes);
490 /*
491 * Do not TALLOC_FREE(subreq) here, we might receive more than
492 * one response for the same mid.
493 */
494
495 /*
496 * We can receive something like STATUS_MORE_ENTRIES, so don't use
497 * !NT_STATUS_IS_OK(status) here.
498 */
499
500 if (NT_STATUS_IS_ERR(status)) {
501 goto fail;
502 }
503
504 sent_all = ((state->param_sent == state->num_param)
505 && (state->data_sent == state->num_data));
506
507 status = cli_pull_trans(
508 inbuf, wct, vwv, num_bytes, bytes,
509 state->cmd, !sent_all, &num_setup, &setup,
510 &total_param, &num_param, &param_disp, &param,
511 &total_data, &num_data, &data_disp, &data);
512
513 if (!NT_STATUS_IS_OK(status)) {
514 goto fail;
515 }
516
517 if (!sent_all) {
518 int iov_count;
519
520 TALLOC_FREE(subreq);
521
522 cli_trans_format(state, &wct, &iov_count);
523
524 subreq = cli_smb_req_create(state, state->ev, state->cli,
525 state->cmd + 1, 0, wct, state->vwv,
526 iov_count, state->iov);
527 if (tevent_req_nomem(subreq, req)) {
528 return;
529 }
530 cli_smb_req_set_mid(subreq, state->mid);
531
532 status = cli_smb_req_send(subreq);
533
534 if (!NT_STATUS_IS_OK(status)) {
535 goto fail;
536 }
537 tevent_req_set_callback(subreq, cli_trans_done, req);
538 return;
539 }
540
541 status = cli_trans_pull_blob(
542 state, &state->rparam, total_param, num_param, param,
543 param_disp);
544
545 if (!NT_STATUS_IS_OK(status)) {
546 DEBUG(10, ("Pulling params failed: %s\n", nt_errstr(status)));
547 goto fail;
548 }
549
550 status = cli_trans_pull_blob(
551 state, &state->rdata, total_data, num_data, data,
552 data_disp);
553
554 if (!NT_STATUS_IS_OK(status)) {
555 DEBUG(10, ("Pulling data failed: %s\n", nt_errstr(status)));
556 goto fail;
557 }
558
559 if ((state->rparam.total == state->rparam.received)
560 && (state->rdata.total == state->rdata.received)) {
561 state->recv_flags2 = SVAL(inbuf, smb_flg2);
562 TALLOC_FREE(subreq);
563 cli_state_seqnum_remove(state->cli, state->mid);
564 tevent_req_done(req);
565 return;
566 }
567
568 TALLOC_FREE(inbuf);
569
570 if (!cli_smb_req_set_pending(subreq)) {
571 status = NT_STATUS_NO_MEMORY;
572 goto fail;
573 }
574 return;
575
576 fail:
577 cli_state_seqnum_remove(state->cli, state->mid);
578 TALLOC_FREE(subreq);
579 tevent_req_nterror(req, status);
580 }
581
582 NTSTATUS cli_trans_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
583 uint16_t *recv_flags2,
584 uint16_t **setup, uint8_t min_setup,
585 uint8_t *num_setup,
586 uint8_t **param, uint32_t min_param,
587 uint32_t *num_param,
588 uint8_t **data, uint32_t min_data,
589 uint32_t *num_data)
590 {
591 struct cli_trans_state *state = tevent_req_data(
592 req, struct cli_trans_state);
593 NTSTATUS status;
594
595 if (tevent_req_is_nterror(req, &status)) {
596 return status;
597 }
598
599 if ((state->num_rsetup < min_setup)
600 || (state->rparam.total < min_param)
601 || (state->rdata.total < min_data)) {
602 return NT_STATUS_INVALID_NETWORK_RESPONSE;
603 }
604
605 if (recv_flags2 != NULL) {
606 *recv_flags2 = state->recv_flags2;
607 }
608
609 if (setup != NULL) {
610 *setup = talloc_move(mem_ctx, &state->rsetup);
611 *num_setup = state->num_rsetup;
612 } else {
613 TALLOC_FREE(state->rsetup);
614 }
615
616 if (param != NULL) {
617 *param = talloc_move(mem_ctx, &state->rparam.data);
618 *num_param = state->rparam.total;
619 } else {
620 TALLOC_FREE(state->rparam.data);
621 }
622
623 if (data != NULL) {
624 *data = talloc_move(mem_ctx, &state->rdata.data);
625 *num_data = state->rdata.total;
626 } else {
627 TALLOC_FREE(state->rdata.data);
628 }
629
630 return NT_STATUS_OK;
631 }
632
633 NTSTATUS cli_trans(TALLOC_CTX *mem_ctx, struct cli_state *cli,
634 uint8_t trans_cmd,
635 const char *pipe_name, uint16_t fid, uint16_t function,
636 int flags,
637 uint16_t *setup, uint8_t num_setup, uint8_t max_setup,
638 uint8_t *param, uint32_t num_param, uint32_t max_param,
639 uint8_t *data, uint32_t num_data, uint32_t max_data,
640 uint16_t *recv_flags2,
641 uint16_t **rsetup, uint8_t min_rsetup, uint8_t *num_rsetup,
642 uint8_t **rparam, uint32_t min_rparam, uint32_t *num_rparam,
643 uint8_t **rdata, uint32_t min_rdata, uint32_t *num_rdata)
644 {
645 TALLOC_CTX *frame = talloc_stackframe();
646 struct event_context *ev;
647 struct tevent_req *req;
648 NTSTATUS status = NT_STATUS_OK;
649
650 if (cli_has_async_calls(cli)) {
651 /*
652 * Can't use sync call while an async call is in flight
653 */
654 status = NT_STATUS_INVALID_PARAMETER;
655 goto fail;
656 }
657
658 ev = event_context_init(frame);
659 if (ev == NULL) {
660 status = NT_STATUS_NO_MEMORY;
661 goto fail;
662 }
663
664 req = cli_trans_send(frame, ev, cli, trans_cmd,
665 pipe_name, fid, function, flags,
666 setup, num_setup, max_setup,
667 param, num_param, max_param,
668 data, num_data, max_data);
669 if (req == NULL) {
670 status = NT_STATUS_NO_MEMORY;
671 goto fail;
672 }
673
674 if (!tevent_req_poll(req, ev)) {
675 status = map_nt_error_from_unix(errno);
676 goto fail;
677 }
678
679 status = cli_trans_recv(req, mem_ctx, recv_flags2,
680 rsetup, min_rsetup, num_rsetup,
681 rparam, min_rparam, num_rparam,
682 rdata, min_rdata, num_rdata);
683 fail:
684 TALLOC_FREE(frame);
685 return status;
686 }
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