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s3: smbd: Locking - re-add pending lock records if we fail to acquire a lock (and...
[Samba.git] / source3 / smbd / smb2_create.c
blobe6f087cd448429b2b975e849e68b80a172f4f0bb
1 /*
2 Unix SMB/CIFS implementation.
3 Core SMB2 server
4
5 Copyright (C) Stefan Metzmacher 2009
6 Copyright (C) Jeremy Allison 2010
7
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
20 */
21
22 #include "includes.h"
23 #include "printing.h"
24 #include "smbd/smbd.h"
25 #include "smbd/globals.h"
26 #include "../libcli/smb/smb_common.h"
27 #include "../librpc/gen_ndr/ndr_security.h"
28 #include "../lib/util/tevent_ntstatus.h"
29 #include "messages.h"
30
31 int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level)
32 {
33 switch(in_oplock_level) {
34 case SMB2_OPLOCK_LEVEL_NONE:
35 return NO_OPLOCK;
36 case SMB2_OPLOCK_LEVEL_II:
37 return LEVEL_II_OPLOCK;
38 case SMB2_OPLOCK_LEVEL_EXCLUSIVE:
39 return EXCLUSIVE_OPLOCK;
40 case SMB2_OPLOCK_LEVEL_BATCH:
41 return BATCH_OPLOCK;
42 case SMB2_OPLOCK_LEVEL_LEASE:
43 DEBUG(2,("map_smb2_oplock_levels_to_samba: "
44 "LEASE_OPLOCK_REQUESTED\n"));
45 return NO_OPLOCK;
46 default:
47 DEBUG(2,("map_smb2_oplock_levels_to_samba: "
48 "unknown level %u\n",
49 (unsigned int)in_oplock_level));
50 return NO_OPLOCK;
51 }
52 }
53
54 static uint8_t map_samba_oplock_levels_to_smb2(int oplock_type)
55 {
56 if (BATCH_OPLOCK_TYPE(oplock_type)) {
57 return SMB2_OPLOCK_LEVEL_BATCH;
58 } else if (EXCLUSIVE_OPLOCK_TYPE(oplock_type)) {
59 return SMB2_OPLOCK_LEVEL_EXCLUSIVE;
60 } else if (oplock_type == LEVEL_II_OPLOCK) {
61 /*
62 * Don't use LEVEL_II_OPLOCK_TYPE here as
63 * this also includes FAKE_LEVEL_II_OPLOCKs
64 * which are internal only.
65 */
66 return SMB2_OPLOCK_LEVEL_II;
67 } else {
68 return SMB2_OPLOCK_LEVEL_NONE;
69 }
70 }
71
72 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
73 struct tevent_context *ev,
74 struct smbd_smb2_request *smb2req,
75 uint8_t in_oplock_level,
76 uint32_t in_impersonation_level,
77 uint32_t in_desired_access,
78 uint32_t in_file_attributes,
79 uint32_t in_share_access,
80 uint32_t in_create_disposition,
81 uint32_t in_create_options,
82 const char *in_name,
83 struct smb2_create_blobs in_context_blobs);
84 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
85 TALLOC_CTX *mem_ctx,
86 uint8_t *out_oplock_level,
87 uint32_t *out_create_action,
88 struct timespec *out_creation_ts,
89 struct timespec *out_last_access_ts,
90 struct timespec *out_last_write_ts,
91 struct timespec *out_change_ts,
92 uint64_t *out_allocation_size,
93 uint64_t *out_end_of_file,
94 uint32_t *out_file_attributes,
95 uint64_t *out_file_id_persistent,
96 uint64_t *out_file_id_volatile,
97 struct smb2_create_blobs *out_context_blobs);
98
99 static void smbd_smb2_request_create_done(struct tevent_req *tsubreq);
100 NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *smb2req)
101 {
102 const uint8_t *inbody;
103 const struct iovec *indyniov;
104 uint8_t in_oplock_level;
105 uint32_t in_impersonation_level;
106 uint32_t in_desired_access;
107 uint32_t in_file_attributes;
108 uint32_t in_share_access;
109 uint32_t in_create_disposition;
110 uint32_t in_create_options;
111 uint16_t in_name_offset;
112 uint16_t in_name_length;
113 DATA_BLOB in_name_buffer;
114 char *in_name_string;
115 size_t in_name_string_size;
116 uint32_t name_offset = 0;
117 uint32_t name_available_length = 0;
118 uint32_t in_context_offset;
119 uint32_t in_context_length;
120 DATA_BLOB in_context_buffer;
121 struct smb2_create_blobs in_context_blobs;
122 uint32_t context_offset = 0;
123 uint32_t context_available_length = 0;
124 uint32_t dyn_offset;
125 NTSTATUS status;
126 bool ok;
127 struct tevent_req *tsubreq;
128
129 status = smbd_smb2_request_verify_sizes(smb2req, 0x39);
130 if (!NT_STATUS_IS_OK(status)) {
131 return smbd_smb2_request_error(smb2req, status);
132 }
133 inbody = SMBD_SMB2_IN_BODY_PTR(smb2req);
134
135 in_oplock_level = CVAL(inbody, 0x03);
136 in_impersonation_level = IVAL(inbody, 0x04);
137 in_desired_access = IVAL(inbody, 0x18);
138 in_file_attributes = IVAL(inbody, 0x1C);
139 in_share_access = IVAL(inbody, 0x20);
140 in_create_disposition = IVAL(inbody, 0x24);
141 in_create_options = IVAL(inbody, 0x28);
142 in_name_offset = SVAL(inbody, 0x2C);
143 in_name_length = SVAL(inbody, 0x2E);
144 in_context_offset = IVAL(inbody, 0x30);
145 in_context_length = IVAL(inbody, 0x34);
146
147 /*
148 * First check if the dynamic name and context buffers
149 * are correctly specified.
150 *
151 * Note: That we don't check if the name and context buffers
152 * overlap
153 */
154
155 dyn_offset = SMB2_HDR_BODY + SMBD_SMB2_IN_BODY_LEN(smb2req);
156
157 if (in_name_offset == 0 && in_name_length == 0) {
158 /* This is ok */
159 name_offset = 0;
160 } else if (in_name_offset < dyn_offset) {
161 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
162 } else {
163 name_offset = in_name_offset - dyn_offset;
164 }
165
166 indyniov = SMBD_SMB2_IN_DYN_IOV(smb2req);
167
168 if (name_offset > indyniov->iov_len) {
169 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
170 }
171
172 name_available_length = indyniov->iov_len - name_offset;
173
174 if (in_name_length > name_available_length) {
175 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
176 }
177
178 in_name_buffer.data = (uint8_t *)indyniov->iov_base + name_offset;
179 in_name_buffer.length = in_name_length;
180
181 if (in_context_offset == 0 && in_context_length == 0) {
182 /* This is ok */
183 context_offset = 0;
184 } else if (in_context_offset < dyn_offset) {
185 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
186 } else {
187 context_offset = in_context_offset - dyn_offset;
188 }
189
190 if (context_offset > indyniov->iov_len) {
191 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
192 }
193
194 context_available_length = indyniov->iov_len - context_offset;
195
196 if (in_context_length > context_available_length) {
197 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
198 }
199
200 in_context_buffer.data = (uint8_t *)indyniov->iov_base +
201 context_offset;
202 in_context_buffer.length = in_context_length;
203
204 /*
205 * Now interpret the name and context buffers
206 */
207
208 ok = convert_string_talloc(smb2req, CH_UTF16, CH_UNIX,
209 in_name_buffer.data,
210 in_name_buffer.length,
211 &in_name_string,
212 &in_name_string_size);
213 if (!ok) {
214 return smbd_smb2_request_error(smb2req, NT_STATUS_ILLEGAL_CHARACTER);
215 }
216
217 if (in_name_buffer.length == 0) {
218 in_name_string_size = 0;
219 }
220
221 if (strlen(in_name_string) != in_name_string_size) {
222 return smbd_smb2_request_error(smb2req, NT_STATUS_OBJECT_NAME_INVALID);
223 }
224
225 ZERO_STRUCT(in_context_blobs);
226 status = smb2_create_blob_parse(smb2req, in_context_buffer, &in_context_blobs);
227 if (!NT_STATUS_IS_OK(status)) {
228 return smbd_smb2_request_error(smb2req, status);
229 }
230
231 tsubreq = smbd_smb2_create_send(smb2req,
232 smb2req->sconn->ev_ctx,
233 smb2req,
234 in_oplock_level,
235 in_impersonation_level,
236 in_desired_access,
237 in_file_attributes,
238 in_share_access,
239 in_create_disposition,
240 in_create_options,
241 in_name_string,
242 in_context_blobs);
243 if (tsubreq == NULL) {
244 smb2req->subreq = NULL;
245 return smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
246 }
247 tevent_req_set_callback(tsubreq, smbd_smb2_request_create_done, smb2req);
248
249 /*
250 * For now we keep the logic that we do not send STATUS_PENDING
251 * for sharing violations, so we just wait 2 seconds.
252 *
253 * TODO: we need more tests for this.
254 */
255 return smbd_smb2_request_pending_queue(smb2req, tsubreq, 2000000);
256 }
257
258 static uint64_t get_mid_from_smb2req(struct smbd_smb2_request *smb2req)
259 {
260 uint8_t *reqhdr = SMBD_SMB2_OUT_HDR_PTR(smb2req);
261 return BVAL(reqhdr, SMB2_HDR_MESSAGE_ID);
262 }
263
264 static void smbd_smb2_request_create_done(struct tevent_req *tsubreq)
265 {
266 struct smbd_smb2_request *smb2req = tevent_req_callback_data(tsubreq,
267 struct smbd_smb2_request);
268 DATA_BLOB outbody;
269 DATA_BLOB outdyn;
270 uint8_t out_oplock_level = 0;
271 uint32_t out_create_action = 0;
272 connection_struct *conn = smb2req->tcon->compat;
273 struct timespec out_creation_ts = { 0, };
274 struct timespec out_last_access_ts = { 0, };
275 struct timespec out_last_write_ts = { 0, };
276 struct timespec out_change_ts = { 0, };
277 uint64_t out_allocation_size = 0;
278 uint64_t out_end_of_file = 0;
279 uint32_t out_file_attributes = 0;
280 uint64_t out_file_id_persistent = 0;
281 uint64_t out_file_id_volatile = 0;
282 struct smb2_create_blobs out_context_blobs;
283 DATA_BLOB out_context_buffer;
284 uint16_t out_context_buffer_offset = 0;
285 NTSTATUS status;
286 NTSTATUS error; /* transport error */
287
288 status = smbd_smb2_create_recv(tsubreq,
289 smb2req,
290 &out_oplock_level,
291 &out_create_action,
292 &out_creation_ts,
293 &out_last_access_ts,
294 &out_last_write_ts,
295 &out_change_ts,
296 &out_allocation_size,
297 &out_end_of_file,
298 &out_file_attributes,
299 &out_file_id_persistent,
300 &out_file_id_volatile,
301 &out_context_blobs);
302 if (!NT_STATUS_IS_OK(status)) {
303 error = smbd_smb2_request_error(smb2req, status);
304 if (!NT_STATUS_IS_OK(error)) {
305 smbd_server_connection_terminate(smb2req->sconn,
306 nt_errstr(error));
307 return;
308 }
309 return;
310 }
311
312 status = smb2_create_blob_push(smb2req, &out_context_buffer, out_context_blobs);
313 if (!NT_STATUS_IS_OK(status)) {
314 error = smbd_smb2_request_error(smb2req, status);
315 if (!NT_STATUS_IS_OK(error)) {
316 smbd_server_connection_terminate(smb2req->sconn,
317 nt_errstr(error));
318 return;
319 }
320 return;
321 }
322
323 if (out_context_buffer.length > 0) {
324 out_context_buffer_offset = SMB2_HDR_BODY + 0x58;
325 }
326
327 outbody = data_blob_talloc(smb2req->out.vector, NULL, 0x58);
328 if (outbody.data == NULL) {
329 error = smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
330 if (!NT_STATUS_IS_OK(error)) {
331 smbd_server_connection_terminate(smb2req->sconn,
332 nt_errstr(error));
333 return;
334 }
335 return;
336 }
337
338 SSVAL(outbody.data, 0x00, 0x58 + 1); /* struct size */
339 SCVAL(outbody.data, 0x02,
340 out_oplock_level); /* oplock level */
341 SCVAL(outbody.data, 0x03, 0); /* reserved */
342 SIVAL(outbody.data, 0x04,
343 out_create_action); /* create action */
344 put_long_date_timespec(conn->ts_res,
345 (char *)outbody.data + 0x08,
346 out_creation_ts); /* creation time */
347 put_long_date_timespec(conn->ts_res,
348 (char *)outbody.data + 0x10,
349 out_last_access_ts); /* last access time */
350 put_long_date_timespec(conn->ts_res,
351 (char *)outbody.data + 0x18,
352 out_last_write_ts); /* last write time */
353 put_long_date_timespec(conn->ts_res,
354 (char *)outbody.data + 0x20,
355 out_change_ts); /* change time */
356 SBVAL(outbody.data, 0x28,
357 out_allocation_size); /* allocation size */
358 SBVAL(outbody.data, 0x30,
359 out_end_of_file); /* end of file */
360 SIVAL(outbody.data, 0x38,
361 out_file_attributes); /* file attributes */
362 SIVAL(outbody.data, 0x3C, 0); /* reserved */
363 SBVAL(outbody.data, 0x40,
364 out_file_id_persistent); /* file id (persistent) */
365 SBVAL(outbody.data, 0x48,
366 out_file_id_volatile); /* file id (volatile) */
367 SIVAL(outbody.data, 0x50,
368 out_context_buffer_offset); /* create contexts offset */
369 SIVAL(outbody.data, 0x54,
370 out_context_buffer.length); /* create contexts length */
371
372 outdyn = out_context_buffer;
373
374 error = smbd_smb2_request_done(smb2req, outbody, &outdyn);
375 if (!NT_STATUS_IS_OK(error)) {
376 smbd_server_connection_terminate(smb2req->sconn,
377 nt_errstr(error));
378 return;
379 }
380 }
381
382 struct smbd_smb2_create_state {
383 struct smbd_smb2_request *smb2req;
384 struct smb_request *smb1req;
385 bool open_was_deferred;
386 struct tevent_timer *te;
387 struct tevent_immediate *im;
388 struct timeval request_time;
389 struct file_id id;
390 DATA_BLOB private_data;
391 uint8_t out_oplock_level;
392 uint32_t out_create_action;
393 struct timespec out_creation_ts;
394 struct timespec out_last_access_ts;
395 struct timespec out_last_write_ts;
396 struct timespec out_change_ts;
397 uint64_t out_allocation_size;
398 uint64_t out_end_of_file;
399 uint32_t out_file_attributes;
400 uint64_t out_file_id_persistent;
401 uint64_t out_file_id_volatile;
402 struct smb2_create_blobs out_context_blobs;
403 };
404
405 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
406 struct tevent_context *ev,
407 struct smbd_smb2_request *smb2req,
408 uint8_t in_oplock_level,
409 uint32_t in_impersonation_level,
410 uint32_t in_desired_access,
411 uint32_t in_file_attributes,
412 uint32_t in_share_access,
413 uint32_t in_create_disposition,
414 uint32_t in_create_options,
415 const char *in_name,
416 struct smb2_create_blobs in_context_blobs)
417 {
418 struct tevent_req *req = NULL;
419 struct smbd_smb2_create_state *state = NULL;
420 NTSTATUS status;
421 struct smb_request *smb1req = NULL;
422 files_struct *result = NULL;
423 int info;
424 struct timespec write_time_ts;
425 struct smb2_create_blobs out_context_blobs;
426 int requested_oplock_level;
427 struct smb2_create_blob *dhnc = NULL;
428 struct smb2_create_blob *dh2c = NULL;
429 struct smbXsrv_open *op = NULL;
430
431 ZERO_STRUCT(out_context_blobs);
432
433 if(lp_fake_oplocks(SNUM(smb2req->tcon->compat))) {
434 requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
435 } else {
436 requested_oplock_level = in_oplock_level;
437 }
438
439
440 if (smb2req->subreq == NULL) {
441 /* New create call. */
442 req = tevent_req_create(mem_ctx, &state,
443 struct smbd_smb2_create_state);
444 if (req == NULL) {
445 return NULL;
446 }
447 state->smb2req = smb2req;
448
449 smb1req = smbd_smb2_fake_smb_request(smb2req);
450 if (tevent_req_nomem(smb1req, req)) {
451 return tevent_req_post(req, ev);
452 }
453 state->smb1req = smb1req;
454 smb2req->subreq = req;
455 DEBUG(10,("smbd_smb2_create: name[%s]\n",
456 in_name));
457 } else {
458 /* Re-entrant create call. */
459 req = smb2req->subreq;
460 state = tevent_req_data(req,
461 struct smbd_smb2_create_state);
462 smb1req = state->smb1req;
463 DEBUG(10,("smbd_smb2_create_send: reentrant for file %s\n",
464 in_name ));
465 }
466
467 dhnc = smb2_create_blob_find(&in_context_blobs,
468 SMB2_CREATE_TAG_DHNC);
469
470 if (dhnc) {
471 if (dhnc->data.length != 16) {
472 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
473 return tevent_req_post(req, ev);
474 }
475 if (in_context_blobs.num_blobs != 1) {
476 /*
477 * DHNC should be the only one.
478 */
479 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
480 return tevent_req_post(req, ev);
481 }
482 }
483
484 dh2c = smb2_create_blob_find(&in_context_blobs,
485 SMB2_CREATE_TAG_DH2C);
486 if (dh2c) {
487 if (dh2c->data.length != 36) {
488 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
489 return tevent_req_post(req, ev);
490 }
491 if (in_context_blobs.num_blobs != 1) {
492 /*
493 * DH2C should be the only one.
494 */
495 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
496 return tevent_req_post(req, ev);
497 }
498 }
499
500 if (IS_IPC(smb1req->conn)) {
501 const char *pipe_name = in_name;
502
503 if (dhnc || dh2c) {
504 /* durable handles are not supported on IPC$ */
505 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
506 return tevent_req_post(req, ev);
507 }
508
509 if (!lp_nt_pipe_support()) {
510 tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
511 return tevent_req_post(req, ev);
512 }
513
514 status = open_np_file(smb1req, pipe_name, &result);
515 if (!NT_STATUS_IS_OK(status)) {
516 tevent_req_nterror(req, status);
517 return tevent_req_post(req, ev);
518 }
519 info = FILE_WAS_OPENED;
520 } else if (CAN_PRINT(smb1req->conn)) {
521 if (dhnc || dh2c) {
522 /* durable handles are not supported on printers */
523 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
524 return tevent_req_post(req, ev);
525 }
526
527 status = file_new(smb1req, smb1req->conn, &result);
528 if(!NT_STATUS_IS_OK(status)) {
529 tevent_req_nterror(req, status);
530 return tevent_req_post(req, ev);
531 }
532
533 status = print_spool_open(result, in_name,
534 smb1req->vuid);
535 if (!NT_STATUS_IS_OK(status)) {
536 file_free(smb1req, result);
537 tevent_req_nterror(req, status);
538 return tevent_req_post(req, ev);
539 }
540 info = FILE_WAS_CREATED;
541 } else {
542 char *fname;
543 struct smb2_create_blob *exta = NULL;
544 struct ea_list *ea_list = NULL;
545 struct smb2_create_blob *mxac = NULL;
546 NTTIME max_access_time = 0;
547 struct smb2_create_blob *secd = NULL;
548 struct security_descriptor *sec_desc = NULL;
549 struct smb2_create_blob *dhnq = NULL;
550 struct smb2_create_blob *alsi = NULL;
551 uint64_t allocation_size = 0;
552 struct smb2_create_blob *twrp = NULL;
553 struct smb2_create_blob *qfid = NULL;
554 struct GUID create_guid = GUID_zero();
555 bool update_open = false;
556 bool durable_requested = false;
557 uint32_t durable_timeout_msec = 0;
558 bool do_durable_reconnect = false;
559 struct smb2_create_blob *dh2q = NULL;
560 uint64_t persistent_id = 0;
561
562 exta = smb2_create_blob_find(&in_context_blobs,
563 SMB2_CREATE_TAG_EXTA);
564 mxac = smb2_create_blob_find(&in_context_blobs,
565 SMB2_CREATE_TAG_MXAC);
566 secd = smb2_create_blob_find(&in_context_blobs,
567 SMB2_CREATE_TAG_SECD);
568 dhnq = smb2_create_blob_find(&in_context_blobs,
569 SMB2_CREATE_TAG_DHNQ);
570 alsi = smb2_create_blob_find(&in_context_blobs,
571 SMB2_CREATE_TAG_ALSI);
572 twrp = smb2_create_blob_find(&in_context_blobs,
573 SMB2_CREATE_TAG_TWRP);
574 qfid = smb2_create_blob_find(&in_context_blobs,
575 SMB2_CREATE_TAG_QFID);
576 dh2q = smb2_create_blob_find(&in_context_blobs,
577 SMB2_CREATE_TAG_DH2Q);
578
579 fname = talloc_strdup(state, in_name);
580 if (tevent_req_nomem(fname, req)) {
581 return tevent_req_post(req, ev);
582 }
583
584 if (exta) {
585 ea_list = read_nttrans_ea_list(mem_ctx,
586 (const char *)exta->data.data, exta->data.length);
587 if (!ea_list) {
588 DEBUG(10,("smbd_smb2_create_send: read_ea_name_list failed.\n"));
589 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
590 return tevent_req_post(req, ev);
591 }
592
593 if (ea_list_has_invalid_name(ea_list)) {
594 tevent_req_nterror(req, STATUS_INVALID_EA_NAME);
595 return tevent_req_post(req, ev);
596 }
597 }
598
599 if (mxac) {
600 if (mxac->data.length == 0) {
601 max_access_time = 0;
602 } else if (mxac->data.length == 8) {
603 max_access_time = BVAL(mxac->data.data, 0);
604 } else {
605 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
606 return tevent_req_post(req, ev);
607 }
608 }
609
610 if (secd) {
611 enum ndr_err_code ndr_err;
612
613 sec_desc = talloc_zero(state, struct security_descriptor);
614 if (tevent_req_nomem(sec_desc, req)) {
615 return tevent_req_post(req, ev);
616 }
617
618 ndr_err = ndr_pull_struct_blob(&secd->data,
619 sec_desc, sec_desc,
620 (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
621 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
622 DEBUG(2,("ndr_pull_security_descriptor failed: %s\n",
623 ndr_errstr(ndr_err)));
624 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
625 return tevent_req_post(req, ev);
626 }
627 }
628
629 if (dhnq) {
630 if (dhnq->data.length != 16) {
631 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
632 return tevent_req_post(req, ev);
633 }
634
635 if (dh2q) {
636 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
637 return tevent_req_post(req, ev);
638 }
639
640 /*
641 * durable handle request is processed below.
642 */
643 durable_requested = true;
644 /*
645 * Set the timeout to 16 mins.
646 *
647 * TODO: test this against Windows 2012
648 * as the default for durable v2 is 1 min.
649 */
650 durable_timeout_msec = (16*60*1000);
651 }
652
653 if (dh2q) {
654 const uint8_t *p = dh2q->data.data;
655 uint32_t durable_v2_timeout = 0;
656 DATA_BLOB create_guid_blob;
657
658 if (dh2q->data.length != 32) {
659 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
660 return tevent_req_post(req, ev);
661 }
662
663 if (dhnq) {
664 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
665 return tevent_req_post(req, ev);
666 }
667
668 durable_v2_timeout = IVAL(p, 0);
669 create_guid_blob = data_blob_const(p + 16, 16);
670
671 status = GUID_from_ndr_blob(&create_guid_blob,
672 &create_guid);
673 if (tevent_req_nterror(req, status)) {
674 return tevent_req_post(req, ev);
675 }
676 /*
677 * we need to store the create_guid later
678 */
679 update_open = true;
680
681 /*
682 * durable handle v2 request processed below
683 */
684 durable_requested = true;
685 durable_timeout_msec = durable_v2_timeout;
686 if (durable_timeout_msec == 0) {
687 /*
688 * Set the timeout to 1 min as default.
689 *
690 * This matches Windows 2012.
691 */
692 durable_timeout_msec = (60*1000);
693 }
694 }
695
696 if (dhnc) {
697 persistent_id = BVAL(dhnc->data.data, 0);
698
699 do_durable_reconnect = true;
700 }
701
702 if (dh2c) {
703 const uint8_t *p = dh2c->data.data;
704 DATA_BLOB create_guid_blob;
705
706 persistent_id = BVAL(p, 0);
707 create_guid_blob = data_blob_const(p + 16, 16);
708
709 status = GUID_from_ndr_blob(&create_guid_blob,
710 &create_guid);
711 if (tevent_req_nterror(req, status)) {
712 return tevent_req_post(req, ev);
713 }
714
715 do_durable_reconnect = true;
716 }
717
718 if (alsi) {
719 if (alsi->data.length != 8) {
720 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
721 return tevent_req_post(req, ev);
722 }
723 allocation_size = BVAL(alsi->data.data, 0);
724 }
725
726 if (twrp) {
727 NTTIME nttime;
728 time_t t;
729 struct tm *tm;
730
731 if (twrp->data.length != 8) {
732 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
733 return tevent_req_post(req, ev);
734 }
735
736 nttime = BVAL(twrp->data.data, 0);
737 t = nt_time_to_unix(nttime);
738 tm = gmtime(&t);
739
740 TALLOC_FREE(fname);
741 fname = talloc_asprintf(state,
742 "@GMT-%04u.%02u.%02u-%02u.%02u.%02u\\%s",
743 tm->tm_year + 1900,
744 tm->tm_mon + 1,
745 tm->tm_mday,
746 tm->tm_hour,
747 tm->tm_min,
748 tm->tm_sec,
749 in_name);
750 if (tevent_req_nomem(fname, req)) {
751 return tevent_req_post(req, ev);
752 }
753 }
754
755 if (qfid) {
756 if (qfid->data.length != 0) {
757 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
758 return tevent_req_post(req, ev);
759 }
760 }
761
762 /* these are ignored for SMB2 */
763 in_create_options &= ~(0x10);/* NTCREATEX_OPTIONS_SYNC_ALERT */
764 in_create_options &= ~(0x20);/* NTCREATEX_OPTIONS_ASYNC_ALERT */
765
766 in_file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
767
768 DEBUG(10, ("smbd_smb2_create_send: open execution phase\n"));
769
770 /*
771 * For the backend file open procedure, there are
772 * two possible modes: durable_reconnect or not.
773 */
774 if (do_durable_reconnect) {
775 DATA_BLOB new_cookie = data_blob_null;
776 NTTIME now = timeval_to_nttime(&smb2req->request_time);
777
778 status = smb2srv_open_recreate(smb2req->sconn->conn,
779 smb1req->conn->session_info,
780 persistent_id, create_guid,
781 now, &op);
782 if (!NT_STATUS_IS_OK(status)) {
783 DEBUG(3, ("smbd_smb2_create_send: "
784 "smb2srv_open_recreate failed: %s\n",
785 nt_errstr(status)));
786 tevent_req_nterror(req, status);
787 return tevent_req_post(req, ev);
788 }
789
790 DEBUG(10, ("smb2_create_send: %s to recreate the "
791 "smb2srv_open struct for a durable handle.\n",
792 op->global->durable ? "succeded" : "failed"));
793
794 if (!op->global->durable) {
795 talloc_free(op);
796 tevent_req_nterror(req,
797 NT_STATUS_OBJECT_NAME_NOT_FOUND);
798 return tevent_req_post(req, ev);
799 }
800
801 status = SMB_VFS_DURABLE_RECONNECT(smb1req->conn,
802 smb1req,
803 op, /* smbXsrv_open input */
804 op->global->backend_cookie,
805 op, /* TALLOC_CTX */
806 &result, &new_cookie);
807 if (!NT_STATUS_IS_OK(status)) {
808 NTSTATUS return_status;
809
810 return_status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
811
812 DEBUG(3, ("smbd_smb2_create_send: "
813 "durable_reconnect failed: %s => %s\n",
814 nt_errstr(status),
815 nt_errstr(return_status)));
816
817 tevent_req_nterror(req, return_status);
818 return tevent_req_post(req, ev);
819 }
820
821 data_blob_free(&op->global->backend_cookie);
822 op->global->backend_cookie = new_cookie;
823
824 op->status = NT_STATUS_OK;
825 op->global->disconnect_time = 0;
826
827 /* save the timout for later update */
828 durable_timeout_msec = op->global->durable_timeout_msec;
829
830 update_open = true;
831
832 info = FILE_WAS_OPENED;
833 } else {
834 struct smb_filename *smb_fname = NULL;
835
836 /*
837 * For a DFS path the function parse_dfs_path()
838 * will do the path processing.
839 */
840
841 if (!(smb1req->flags2 & FLAGS2_DFS_PATHNAMES)) {
842 /* convert '\\' into '/' */
843 status = check_path_syntax(fname);
844 if (!NT_STATUS_IS_OK(status)) {
845 tevent_req_nterror(req, status);
846 return tevent_req_post(req, ev);
847 }
848 }
849
850 status = filename_convert(req,
851 smb1req->conn,
852 smb1req->flags2 & FLAGS2_DFS_PATHNAMES,
853 fname,
854 UCF_PREP_CREATEFILE,
855 NULL, /* ppath_contains_wcards */
856 &smb_fname);
857 if (!NT_STATUS_IS_OK(status)) {
858 tevent_req_nterror(req, status);
859 return tevent_req_post(req, ev);
860 }
861
862 status = SMB_VFS_CREATE_FILE(smb1req->conn,
863 smb1req,
864 0, /* root_dir_fid */
865 smb_fname,
866 in_desired_access,
867 in_share_access,
868 in_create_disposition,
869 in_create_options,
870 in_file_attributes,
871 map_smb2_oplock_levels_to_samba(requested_oplock_level),
872 allocation_size,
873 0, /* private_flags */
874 sec_desc,
875 ea_list,
876 &result,
877 &info);
878 if (!NT_STATUS_IS_OK(status)) {
879 if (open_was_deferred(smb1req->sconn, smb1req->mid)) {
880 return req;
881 }
882 tevent_req_nterror(req, status);
883 return tevent_req_post(req, ev);
884 }
885 op = result->op;
886 }
887
888 /*
889 * here we have op == result->op
890 */
891
892 DEBUG(10, ("smbd_smb2_create_send: "
893 "response construction phase\n"));
894
895 if (mxac) {
896 NTTIME last_write_time;
897
898 unix_timespec_to_nt_time(&last_write_time,
899 result->fsp_name->st.st_ex_mtime);
900 if (last_write_time != max_access_time) {
901 uint8_t p[8];
902 uint32_t max_access_granted;
903 DATA_BLOB blob = data_blob_const(p, sizeof(p));
904
905 status = smbd_calculate_access_mask(smb1req->conn,
906 result->fsp_name,
907 false,
908 SEC_FLAG_MAXIMUM_ALLOWED,
909 &max_access_granted);
910
911 SIVAL(p, 0, NT_STATUS_V(status));
912 SIVAL(p, 4, max_access_granted);
913
914 status = smb2_create_blob_add(state,
915 &out_context_blobs,
916 SMB2_CREATE_TAG_MXAC,
917 blob);
918 if (!NT_STATUS_IS_OK(status)) {
919 tevent_req_nterror(req, status);
920 return tevent_req_post(req, ev);
921 }
922 }
923 }
924
925 if (durable_requested &&
926 BATCH_OPLOCK_TYPE(result->oplock_type))
927 {
928 status = SMB_VFS_DURABLE_COOKIE(result,
929 op,
930 &op->global->backend_cookie);
931 if (!NT_STATUS_IS_OK(status)) {
932 op->global->backend_cookie = data_blob_null;
933 }
934 }
935 if (op->global->backend_cookie.length > 0) {
936 update_open = true;
937
938 op->global->durable = true;
939 op->global->durable_timeout_msec = durable_timeout_msec;
940 }
941
942 if (update_open) {
943 op->global->create_guid = create_guid;
944
945 status = smbXsrv_open_update(op);
946 DEBUG(10, ("smb2_create_send: smbXsrv_open_update "
947 "returned %s\n",
948 nt_errstr(status)));
949 if (!NT_STATUS_IS_OK(status)) {
950 tevent_req_nterror(req, status);
951 return tevent_req_post(req, ev);
952 }
953 }
954
955 if (dhnq && op->global->durable) {
956 uint8_t p[8] = { 0, };
957 DATA_BLOB blob = data_blob_const(p, sizeof(p));
958
959 status = smb2_create_blob_add(state,
960 &out_context_blobs,
961 SMB2_CREATE_TAG_DHNQ,
962 blob);
963 if (!NT_STATUS_IS_OK(status)) {
964 tevent_req_nterror(req, status);
965 return tevent_req_post(req, ev);
966 }
967 }
968
969 if (dh2q && op->global->durable) {
970 uint8_t p[8] = { 0, };
971 DATA_BLOB blob = data_blob_const(p, sizeof(p));
972 uint32_t durable_v2_response_flags = 0;
973
974 SIVAL(p, 0, op->global->durable_timeout_msec);
975 SIVAL(p, 4, durable_v2_response_flags);
976
977 status = smb2_create_blob_add(state, &out_context_blobs,
978 SMB2_CREATE_TAG_DH2Q,
979 blob);
980 if (!NT_STATUS_IS_OK(status)) {
981 tevent_req_nterror(req, status);
982 return tevent_req_post(req, ev);
983 }
984 }
985
986 if (qfid) {
987 uint8_t p[32];
988 uint64_t file_index = get_FileIndex(result->conn,
989 &result->fsp_name->st);
990 DATA_BLOB blob = data_blob_const(p, sizeof(p));
991
992 ZERO_STRUCT(p);
993
994 /* From conversations with Microsoft engineers at
995 the MS plugfest. The first 8 bytes are the "volume index"
996 == inode, the second 8 bytes are the "volume id",
997 == dev. This will be updated in the SMB2 doc. */
998 SBVAL(p, 0, file_index);
999 SIVAL(p, 8, result->fsp_name->st.st_ex_dev);/* FileIndexHigh */
1000
1001 status = smb2_create_blob_add(state, &out_context_blobs,
1002 SMB2_CREATE_TAG_QFID,
1003 blob);
1004 if (!NT_STATUS_IS_OK(status)) {
1005 tevent_req_nterror(req, status);
1006 return tevent_req_post(req, ev);
1007 }
1008 }
1009 }
1010
1011 smb2req->compat_chain_fsp = smb1req->chain_fsp;
1012
1013 if(lp_fake_oplocks(SNUM(smb2req->tcon->compat))) {
1014 state->out_oplock_level = in_oplock_level;
1015 } else {
1016 state->out_oplock_level = map_samba_oplock_levels_to_smb2(result->oplock_type);
1017 }
1018
1019 if ((in_create_disposition == FILE_SUPERSEDE)
1020 && (info == FILE_WAS_OVERWRITTEN)) {
1021 state->out_create_action = FILE_WAS_SUPERSEDED;
1022 } else {
1023 state->out_create_action = info;
1024 }
1025 state->out_file_attributes = dos_mode(result->conn,
1026 result->fsp_name);
1027 /* Deal with other possible opens having a modified
1028 write time. JRA. */
1029 ZERO_STRUCT(write_time_ts);
1030 get_file_infos(result->file_id, 0, NULL, &write_time_ts);
1031 if (!null_timespec(write_time_ts)) {
1032 update_stat_ex_mtime(&result->fsp_name->st, write_time_ts);
1033 }
1034
1035 state->out_creation_ts = get_create_timespec(smb1req->conn,
1036 result, result->fsp_name);
1037 state->out_last_access_ts = result->fsp_name->st.st_ex_atime;
1038 state->out_last_write_ts = result->fsp_name->st.st_ex_mtime;
1039 state->out_change_ts = get_change_timespec(smb1req->conn,
1040 result, result->fsp_name);
1041 state->out_allocation_size =
1042 SMB_VFS_GET_ALLOC_SIZE(smb1req->conn, result,
1043 &(result->fsp_name->st));
1044 state->out_end_of_file = result->fsp_name->st.st_ex_size;
1045 if (state->out_file_attributes == 0) {
1046 state->out_file_attributes = FILE_ATTRIBUTE_NORMAL;
1047 }
1048 state->out_file_id_persistent = result->op->global->open_persistent_id;
1049 state->out_file_id_volatile = result->op->global->open_volatile_id;
1050 state->out_context_blobs = out_context_blobs;
1051
1052 DEBUG(10,("smbd_smb2_create_send: %s - %s\n",
1053 fsp_str_dbg(result), fsp_fnum_dbg(result)));
1054
1055 tevent_req_done(req);
1056 return tevent_req_post(req, ev);
1057 }
1058
1059 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
1060 TALLOC_CTX *mem_ctx,
1061 uint8_t *out_oplock_level,
1062 uint32_t *out_create_action,
1063 struct timespec *out_creation_ts,
1064 struct timespec *out_last_access_ts,
1065 struct timespec *out_last_write_ts,
1066 struct timespec *out_change_ts,
1067 uint64_t *out_allocation_size,
1068 uint64_t *out_end_of_file,
1069 uint32_t *out_file_attributes,
1070 uint64_t *out_file_id_persistent,
1071 uint64_t *out_file_id_volatile,
1072 struct smb2_create_blobs *out_context_blobs)
1073 {
1074 NTSTATUS status;
1075 struct smbd_smb2_create_state *state = tevent_req_data(req,
1076 struct smbd_smb2_create_state);
1077
1078 if (tevent_req_is_nterror(req, &status)) {
1079 tevent_req_received(req);
1080 return status;
1081 }
1082
1083 *out_oplock_level = state->out_oplock_level;
1084 *out_create_action = state->out_create_action;
1085 *out_creation_ts = state->out_creation_ts;
1086 *out_last_access_ts = state->out_last_access_ts;
1087 *out_last_write_ts = state->out_last_write_ts;
1088 *out_change_ts = state->out_change_ts;
1089 *out_allocation_size = state->out_allocation_size;
1090 *out_end_of_file = state->out_end_of_file;
1091 *out_file_attributes = state->out_file_attributes;
1092 *out_file_id_persistent = state->out_file_id_persistent;
1093 *out_file_id_volatile = state->out_file_id_volatile;
1094 *out_context_blobs = state->out_context_blobs;
1095
1096 talloc_steal(mem_ctx, state->out_context_blobs.blobs);
1097
1098 tevent_req_received(req);
1099 return NT_STATUS_OK;
1100 }
1101
1102 /*********************************************************
1103 Code for dealing with deferred opens.
1104 *********************************************************/
1105
1106 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
1107 struct timeval *p_request_time,
1108 void **pp_state)
1109 {
1110 struct smbd_smb2_create_state *state = NULL;
1111 struct tevent_req *req = NULL;
1112
1113 if (!smb2req) {
1114 return false;
1115 }
1116 req = smb2req->subreq;
1117 if (!req) {
1118 return false;
1119 }
1120 state = tevent_req_data(req, struct smbd_smb2_create_state);
1121 if (!state) {
1122 return false;
1123 }
1124 if (!state->open_was_deferred) {
1125 return false;
1126 }
1127 if (p_request_time) {
1128 *p_request_time = state->request_time;
1129 }
1130 if (pp_state) {
1131 *pp_state = (void *)state->private_data.data;
1132 }
1133 return true;
1134 }
1135
1136 /*********************************************************
1137 Re-process this call early - requested by message or
1138 close.
1139 *********************************************************/
1140
1141 static struct smbd_smb2_request *find_open_smb2req(
1142 struct smbd_server_connection *sconn, uint64_t mid)
1143 {
1144 struct smbd_smb2_request *smb2req;
1145
1146 for (smb2req = sconn->smb2.requests; smb2req; smb2req = smb2req->next) {
1147 uint64_t message_id;
1148 if (smb2req->subreq == NULL) {
1149 /* This message has been processed. */
1150 continue;
1151 }
1152 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1153 /* This message has been processed. */
1154 continue;
1155 }
1156 message_id = get_mid_from_smb2req(smb2req);
1157 if (message_id == mid) {
1158 return smb2req;
1159 }
1160 }
1161 return NULL;
1162 }
1163
1164 bool open_was_deferred_smb2(struct smbd_server_connection *sconn, uint64_t mid)
1165 {
1166 struct smbd_smb2_create_state *state = NULL;
1167 struct smbd_smb2_request *smb2req;
1168
1169 smb2req = find_open_smb2req(sconn, mid);
1170
1171 if (!smb2req) {
1172 DEBUG(10,("open_was_deferred_smb2: mid %llu smb2req == NULL\n",
1173 (unsigned long long)mid));
1174 return false;
1175 }
1176 if (!smb2req->subreq) {
1177 return false;
1178 }
1179 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1180 return false;
1181 }
1182 state = tevent_req_data(smb2req->subreq,
1183 struct smbd_smb2_create_state);
1184 if (!state) {
1185 return false;
1186 }
1187 /* It's not in progress if there's no timeout event. */
1188 if (!state->open_was_deferred) {
1189 return false;
1190 }
1191
1192 DEBUG(10,("open_was_deferred_smb2: mid = %llu\n",
1193 (unsigned long long)mid));
1194
1195 return true;
1196 }
1197
1198 static void remove_deferred_open_message_smb2_internal(struct smbd_smb2_request *smb2req,
1199 uint64_t mid)
1200 {
1201 struct smbd_smb2_create_state *state = NULL;
1202
1203 if (!smb2req->subreq) {
1204 return;
1205 }
1206 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1207 return;
1208 }
1209 state = tevent_req_data(smb2req->subreq,
1210 struct smbd_smb2_create_state);
1211 if (!state) {
1212 return;
1213 }
1214
1215 DEBUG(10,("remove_deferred_open_message_smb2_internal: "
1216 "mid %llu\n",
1217 (unsigned long long)mid ));
1218
1219 state->open_was_deferred = false;
1220 /* Ensure we don't have any outstanding timer event. */
1221 TALLOC_FREE(state->te);
1222 /* Ensure we don't have any outstanding immediate event. */
1223 TALLOC_FREE(state->im);
1224 }
1225
1226 void remove_deferred_open_message_smb2(
1227 struct smbd_server_connection *sconn, uint64_t mid)
1228 {
1229 struct smbd_smb2_request *smb2req;
1230
1231 smb2req = find_open_smb2req(sconn, mid);
1232
1233 if (!smb2req) {
1234 DEBUG(10,("remove_deferred_open_message_smb2: "
1235 "can't find mid %llu\n",
1236 (unsigned long long)mid ));
1237 return;
1238 }
1239 remove_deferred_open_message_smb2_internal(smb2req, mid);
1240 }
1241
1242 static void smbd_smb2_create_request_dispatch_immediate(struct tevent_context *ctx,
1243 struct tevent_immediate *im,
1244 void *private_data)
1245 {
1246 struct smbd_smb2_request *smb2req = talloc_get_type_abort(private_data,
1247 struct smbd_smb2_request);
1248 struct smbd_server_connection *sconn = smb2req->sconn;
1249 uint64_t mid = get_mid_from_smb2req(smb2req);
1250 NTSTATUS status;
1251
1252 DEBUG(10,("smbd_smb2_create_request_dispatch_immediate: "
1253 "re-dispatching mid %llu\n",
1254 (unsigned long long)mid ));
1255
1256 status = smbd_smb2_request_dispatch(smb2req);
1257 if (!NT_STATUS_IS_OK(status)) {
1258 smbd_server_connection_terminate(sconn, nt_errstr(status));
1259 return;
1260 }
1261 }
1262
1263 bool schedule_deferred_open_message_smb2(
1264 struct smbd_server_connection *sconn, uint64_t mid)
1265 {
1266 struct smbd_smb2_create_state *state = NULL;
1267 struct smbd_smb2_request *smb2req;
1268
1269 smb2req = find_open_smb2req(sconn, mid);
1270
1271 if (!smb2req) {
1272 DEBUG(10,("schedule_deferred_open_message_smb2: "
1273 "can't find mid %llu\n",
1274 (unsigned long long)mid ));
1275
1276 /*
1277 * Bug 10593: We have to ignore this as an error because the
1278 * request might have been cancelled. The real fix is to
1279 * discard the defer_open dbwrap_watcher at cancel
1280 * time. Working on that.... :-)
1281 */
1282 return true;
1283 }
1284 if (!smb2req->subreq) {
1285 return false;
1286 }
1287 if (!tevent_req_is_in_progress(smb2req->subreq)) {
1288 return false;
1289 }
1290 state = tevent_req_data(smb2req->subreq,
1291 struct smbd_smb2_create_state);
1292 if (!state) {
1293 return false;
1294 }
1295
1296 /* Ensure we don't have any outstanding timer event. */
1297 TALLOC_FREE(state->te);
1298 /* Ensure we don't have any outstanding immediate event. */
1299 TALLOC_FREE(state->im);
1300
1301 /*
1302 * This is subtle. We must null out the callback
1303 * before rescheduling, else the first call to
1304 * tevent_req_nterror() causes the _receive()
1305 * function to be called, this causing tevent_req_post()
1306 * to crash.
1307 */
1308 tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1309
1310 state->im = tevent_create_immediate(smb2req);
1311 if (!state->im) {
1312 smbd_server_connection_terminate(smb2req->sconn,
1313 nt_errstr(NT_STATUS_NO_MEMORY));
1314 return false;
1315 }
1316
1317 DEBUG(10,("schedule_deferred_open_message_smb2: "
1318 "re-processing mid %llu\n",
1319 (unsigned long long)mid ));
1320
1321 tevent_schedule_immediate(state->im,
1322 smb2req->sconn->ev_ctx,
1323 smbd_smb2_create_request_dispatch_immediate,
1324 smb2req);
1325
1326 return true;
1327 }
1328
1329 static bool smbd_smb2_create_cancel(struct tevent_req *req)
1330 {
1331 struct smbd_smb2_request *smb2req = NULL;
1332 struct smbd_smb2_create_state *state = tevent_req_data(req,
1333 struct smbd_smb2_create_state);
1334 uint64_t mid;
1335
1336 if (!state) {
1337 return false;
1338 }
1339
1340 if (!state->smb2req) {
1341 return false;
1342 }
1343
1344 smb2req = state->smb2req;
1345 mid = get_mid_from_smb2req(smb2req);
1346
1347 if (is_deferred_open_async(state->private_data.data)) {
1348 /* Can't cancel an async create. */
1349 return false;
1350 }
1351
1352 remove_deferred_open_message_smb2_internal(smb2req, mid);
1353
1354 tevent_req_defer_callback(req, smb2req->sconn->ev_ctx);
1355 tevent_req_nterror(req, NT_STATUS_CANCELLED);
1356 return true;
1357 }
1358
1359 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
1360 struct timeval request_time,
1361 struct timeval timeout,
1362 struct file_id id,
1363 char *private_data,
1364 size_t priv_len)
1365 {
1366 struct tevent_req *req = NULL;
1367 struct smbd_smb2_create_state *state = NULL;
1368 struct timeval end_time;
1369
1370 if (!smb2req) {
1371 return false;
1372 }
1373 req = smb2req->subreq;
1374 if (!req) {
1375 return false;
1376 }
1377 state = tevent_req_data(req, struct smbd_smb2_create_state);
1378 if (!state) {
1379 return false;
1380 }
1381 state->id = id;
1382 state->request_time = request_time;
1383 state->private_data = data_blob_talloc(state, private_data,
1384 priv_len);
1385 if (!state->private_data.data) {
1386 return false;
1387 }
1388
1389 /* Re-schedule us to retry on timer expiry. */
1390 end_time = timeval_sum(&request_time, &timeout);
1391
1392 DEBUG(10,("push_deferred_open_message_smb2: "
1393 "timeout at %s\n",
1394 timeval_string(talloc_tos(),
1395 &end_time,
1396 true) ));
1397
1398 state->open_was_deferred = true;
1399
1400 /* allow this request to be canceled */
1401 tevent_req_set_cancel_fn(req, smbd_smb2_create_cancel);
1402
1403 return true;
1404 }
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