source3/smbd/smb2_create.c

   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 "smbd/globals.h"
  24 #include "../libcli/smb/smb_common.h"
  25
  26 int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level)
  27 {
  28         switch(in_oplock_level) {
  29         case SMB2_OPLOCK_LEVEL_NONE:
  30                 return NO_OPLOCK;
  31         case SMB2_OPLOCK_LEVEL_II:
  32                 return LEVEL_II_OPLOCK;
  33         case SMB2_OPLOCK_LEVEL_EXCLUSIVE:
  34                 return EXCLUSIVE_OPLOCK;
  35         case SMB2_OPLOCK_LEVEL_BATCH:
  36                 return BATCH_OPLOCK;
  37         case SMB2_OPLOCK_LEVEL_LEASE:
  38                 DEBUG(2,("map_smb2_oplock_levels_to_samba: "
  39                         "LEASE_OPLOCK_REQUESTED\n"));
  40                 return NO_OPLOCK;
  41         default:
  42                 DEBUG(2,("map_smb2_oplock_levels_to_samba: "
  43                         "unknown level %u\n",
  44                         (unsigned int)in_oplock_level));
  45                 return NO_OPLOCK;
  46         }
  47 }
  48
  49 static uint8_t map_samba_oplock_levels_to_smb2(int oplock_type)
  50 {
  51         if (BATCH_OPLOCK_TYPE(oplock_type)) {
  52                 return SMB2_OPLOCK_LEVEL_BATCH;
  53         } else if (EXCLUSIVE_OPLOCK_TYPE(oplock_type)) {
  54                 return SMB2_OPLOCK_LEVEL_EXCLUSIVE;
  55         } else if (oplock_type == LEVEL_II_OPLOCK) {
  56                 /*
  57                  * Don't use LEVEL_II_OPLOCK_TYPE here as
  58                  * this also includes FAKE_LEVEL_II_OPLOCKs
  59                  * which are internal only.
  60                  */
  61                 return SMB2_OPLOCK_LEVEL_II;
  62         } else {
  63                 return SMB2_OPLOCK_LEVEL_NONE;
  64         }
  65 }
  66
  67 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
  68                         struct tevent_context *ev,
  69                         struct smbd_smb2_request *smb2req,
  70                         uint8_t in_oplock_level,
  71                         uint32_t in_impersonation_level,
  72                         uint32_t in_desired_access,
  73                         uint32_t in_file_attributes,
  74                         uint32_t in_share_access,
  75                         uint32_t in_create_disposition,
  76                         uint32_t in_create_options,
  77                         const char *in_name,
  78                         struct smb2_create_blobs in_context_blobs);
  79 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
  80                         TALLOC_CTX *mem_ctx,
  81                         uint8_t *out_oplock_level,
  82                         uint32_t *out_create_action,
  83                         NTTIME *out_creation_time,
  84                         NTTIME *out_last_access_time,
  85                         NTTIME *out_last_write_time,
  86                         NTTIME *out_change_time,
  87                         uint64_t *out_allocation_size,
  88                         uint64_t *out_end_of_file,
  89                         uint32_t *out_file_attributes,
  90                         uint64_t *out_file_id_persistent,
  91                         uint64_t *out_file_id_volatile,
  92                         struct smb2_create_blobs *out_context_blobs);
  93
  94 static void smbd_smb2_request_create_done(struct tevent_req *tsubreq);
  95 NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *smb2req)
  96 {
  97         const uint8_t *inbody;
  98         int i = smb2req->current_idx;
  99         size_t expected_body_size = 0x39;
 100         size_t body_size;
 101         uint8_t in_oplock_level;
 102         uint32_t in_impersonation_level;
 103         uint32_t in_desired_access;
 104         uint32_t in_file_attributes;
 105         uint32_t in_share_access;
 106         uint32_t in_create_disposition;
 107         uint32_t in_create_options;
 108         uint16_t in_name_offset;
 109         uint16_t in_name_length;
 110         DATA_BLOB in_name_buffer;
 111         char *in_name_string;
 112         size_t in_name_string_size;
 113         uint32_t name_offset = 0;
 114         uint32_t name_available_length = 0;
 115         uint32_t in_context_offset;
 116         uint32_t in_context_length;
 117         DATA_BLOB in_context_buffer;
 118         struct smb2_create_blobs in_context_blobs;
 119         uint32_t context_offset = 0;
 120         uint32_t context_available_length = 0;
 121         uint32_t dyn_offset;
 122         NTSTATUS status;
 123         bool ok;
 124         struct tevent_req *tsubreq;
 125
 126         if (smb2req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
 127                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 128         }
 129
 130         inbody = (const uint8_t *)smb2req->in.vector[i+1].iov_base;
 131
 132         body_size = SVAL(inbody, 0x00);
 133         if (body_size != expected_body_size) {
 134                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 135         }
 136
 137         in_oplock_level         = CVAL(inbody, 0x03);
 138         in_impersonation_level  = IVAL(inbody, 0x04);
 139         in_desired_access       = IVAL(inbody, 0x18);
 140         in_file_attributes      = IVAL(inbody, 0x1C);
 141         in_share_access         = IVAL(inbody, 0x20);
 142         in_create_disposition   = IVAL(inbody, 0x24);
 143         in_create_options       = IVAL(inbody, 0x28);
 144         in_name_offset          = SVAL(inbody, 0x2C);
 145         in_name_length          = SVAL(inbody, 0x2E);
 146         in_context_offset       = IVAL(inbody, 0x30);
 147         in_context_length       = IVAL(inbody, 0x34);
 148
 149         /*
 150          * First check if the dynamic name and context buffers
 151          * are correctly specified.
 152          *
 153          * Note: That we don't check if the name and context buffers
 154          *       overlap
 155          */
 156
 157         dyn_offset = SMB2_HDR_BODY + (body_size & 0xFFFFFFFE);
 158
 159         if (in_name_offset == 0 && in_name_length == 0) {
 160                 /* This is ok */
 161                 name_offset = 0;
 162         } else if (in_name_offset < dyn_offset) {
 163                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 164         } else {
 165                 name_offset = in_name_offset - dyn_offset;
 166         }
 167
 168         if (name_offset > smb2req->in.vector[i+2].iov_len) {
 169                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 170         }
 171
 172         name_available_length = smb2req->in.vector[i+2].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 *)smb2req->in.vector[i+2].iov_base +
 179                               name_offset;
 180         in_name_buffer.length = in_name_length;
 181
 182         if (in_context_offset == 0 && in_context_length == 0) {
 183                 /* This is ok */
 184                 context_offset = 0;
 185         } else if (in_context_offset < dyn_offset) {
 186                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 187         } else {
 188                 context_offset = in_context_offset - dyn_offset;
 189         }
 190
 191         if (context_offset > smb2req->in.vector[i+2].iov_len) {
 192                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 193         }
 194
 195         context_available_length = smb2req->in.vector[i+2].iov_len - context_offset;
 196
 197         if (in_context_length > context_available_length) {
 198                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 199         }
 200
 201         in_context_buffer.data = (uint8_t *)smb2req->in.vector[i+2].iov_base +
 202                                   context_offset;
 203         in_context_buffer.length = in_context_length;
 204
 205         /*
 206          * Now interpret the name and context buffers
 207          */
 208
 209         ok = convert_string_talloc(smb2req, CH_UTF16, CH_UNIX,
 210                                    in_name_buffer.data,
 211                                    in_name_buffer.length,
 212                                    &in_name_string,
 213                                    &in_name_string_size, false);
 214         if (!ok) {
 215                 return smbd_smb2_request_error(smb2req, NT_STATUS_ILLEGAL_CHARACTER);
 216         }
 217
 218         ZERO_STRUCT(in_context_blobs);
 219         status = smb2_create_blob_parse(smb2req, in_context_buffer, &in_context_blobs);
 220         if (!NT_STATUS_IS_OK(status)) {
 221                 return smbd_smb2_request_error(smb2req, status);
 222         }
 223
 224         tsubreq = smbd_smb2_create_send(smb2req,
 225                                        smb2req->sconn->smb2.event_ctx,
 226                                        smb2req,
 227                                        in_oplock_level,
 228                                        in_impersonation_level,
 229                                        in_desired_access,
 230                                        in_file_attributes,
 231                                        in_share_access,
 232                                        in_create_disposition,
 233                                        in_create_options,
 234                                        in_name_string,
 235                                        in_context_blobs);
 236         if (tsubreq == NULL) {
 237                 smb2req->subreq = NULL;
 238                 return smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
 239         }
 240         tevent_req_set_callback(tsubreq, smbd_smb2_request_create_done, smb2req);
 241
 242         return smbd_smb2_request_pending_queue(smb2req, tsubreq);
 243 }
 244
 245 static uint64_t get_mid_from_smb2req(struct smbd_smb2_request *smb2req)
 246 {
 247         uint8_t *reqhdr = (uint8_t *)smb2req->out.vector[smb2req->current_idx].iov_base;
 248         return BVAL(reqhdr, SMB2_HDR_MESSAGE_ID);
 249 }
 250
 251 static void smbd_smb2_request_create_done(struct tevent_req *tsubreq)
 252 {
 253         struct smbd_smb2_request *smb2req = tevent_req_callback_data(tsubreq,
 254                                         struct smbd_smb2_request);
 255         int i = smb2req->current_idx;
 256         uint8_t *outhdr;
 257         DATA_BLOB outbody;
 258         DATA_BLOB outdyn;
 259         uint8_t out_oplock_level = 0;
 260         uint32_t out_create_action = 0;
 261         NTTIME out_creation_time = 0;
 262         NTTIME out_last_access_time = 0;
 263         NTTIME out_last_write_time = 0;
 264         NTTIME out_change_time = 0;
 265         uint64_t out_allocation_size = 0;
 266         uint64_t out_end_of_file = 0;
 267         uint32_t out_file_attributes = 0;
 268         uint64_t out_file_id_persistent = 0;
 269         uint64_t out_file_id_volatile = 0;
 270         struct smb2_create_blobs out_context_blobs;
 271         DATA_BLOB out_context_buffer;
 272         uint16_t out_context_buffer_offset = 0;
 273         NTSTATUS status;
 274         NTSTATUS error; /* transport error */
 275
 276         if (smb2req->cancelled) {
 277                 uint64_t mid = get_mid_from_smb2req(smb2req);
 278                 DEBUG(10,("smbd_smb2_request_create_done: cancelled mid %llu\n",
 279                         (unsigned long long)mid ));
 280                 error = smbd_smb2_request_error(smb2req, NT_STATUS_CANCELLED);
 281                 if (!NT_STATUS_IS_OK(error)) {
 282                         smbd_server_connection_terminate(smb2req->sconn,
 283                                 nt_errstr(error));
 284                         return;
 285                 }
 286                 return;
 287         }
 288
 289         status = smbd_smb2_create_recv(tsubreq,
 290                                        smb2req,
 291                                        &out_oplock_level,
 292                                        &out_create_action,
 293                                        &out_creation_time,
 294                                        &out_last_access_time,
 295                                        &out_last_write_time,
 296                                        &out_change_time,
 297                                        &out_allocation_size,
 298                                        &out_end_of_file,
 299                                        &out_file_attributes,
 300                                        &out_file_id_persistent,
 301                                        &out_file_id_volatile,
 302                                        &out_context_blobs);
 303         if (!NT_STATUS_IS_OK(status)) {
 304                 error = smbd_smb2_request_error(smb2req, status);
 305                 if (!NT_STATUS_IS_OK(error)) {
 306                         smbd_server_connection_terminate(smb2req->sconn,
 307                                                          nt_errstr(error));
 308                         return;
 309                 }
 310                 return;
 311         }
 312
 313         status = smb2_create_blob_push(smb2req, &out_context_buffer, out_context_blobs);
 314         if (!NT_STATUS_IS_OK(status)) {
 315                 error = smbd_smb2_request_error(smb2req, status);
 316                 if (!NT_STATUS_IS_OK(error)) {
 317                         smbd_server_connection_terminate(smb2req->sconn,
 318                                                          nt_errstr(error));
 319                         return;
 320                 }
 321                 return;
 322         }
 323
 324         if (out_context_buffer.length > 0) {
 325                 out_context_buffer_offset = SMB2_HDR_BODY + 0x58;
 326         }
 327
 328         outhdr = (uint8_t *)smb2req->out.vector[i].iov_base;
 329
 330         outbody = data_blob_talloc(smb2req->out.vector, NULL, 0x58);
 331         if (outbody.data == NULL) {
 332                 error = smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
 333                 if (!NT_STATUS_IS_OK(error)) {
 334                         smbd_server_connection_terminate(smb2req->sconn,
 335                                                          nt_errstr(error));
 336                         return;
 337                 }
 338                 return;
 339         }
 340
 341         SSVAL(outbody.data, 0x00, 0x58 + 1);    /* struct size */
 342         SCVAL(outbody.data, 0x02,
 343               out_oplock_level);                /* oplock level */
 344         SCVAL(outbody.data, 0x03, 0);           /* reserved */
 345         SIVAL(outbody.data, 0x04,
 346               out_create_action);               /* create action */
 347         SBVAL(outbody.data, 0x08,
 348               out_creation_time);               /* creation time */
 349         SBVAL(outbody.data, 0x10,
 350               out_last_access_time);            /* last access time */
 351         SBVAL(outbody.data, 0x18,
 352               out_last_write_time);             /* last write time */
 353         SBVAL(outbody.data, 0x20,
 354               out_change_time);                 /* change time */
 355         SBVAL(outbody.data, 0x28,
 356               out_allocation_size);             /* allocation size */
 357         SBVAL(outbody.data, 0x30,
 358               out_end_of_file);                 /* end of file */
 359         SIVAL(outbody.data, 0x38,
 360               out_file_attributes);             /* file attributes */
 361         SIVAL(outbody.data, 0x3C, 0);           /* reserved */
 362         SBVAL(outbody.data, 0x40,
 363               out_file_id_persistent);          /* file id (persistent) */
 364         SBVAL(outbody.data, 0x48,
 365               out_file_id_volatile);            /* file id (volatile) */
 366         SIVAL(outbody.data, 0x50,
 367               out_context_buffer_offset);       /* create contexts offset */
 368         SIVAL(outbody.data, 0x54,
 369               out_context_buffer.length);       /* create contexts length */
 370
 371         outdyn = out_context_buffer;
 372
 373         error = smbd_smb2_request_done(smb2req, outbody, &outdyn);
 374         if (!NT_STATUS_IS_OK(error)) {
 375                 smbd_server_connection_terminate(smb2req->sconn,
 376                                                  nt_errstr(error));
 377                 return;
 378         }
 379 }
 380
 381 struct smbd_smb2_create_state {
 382         struct smbd_smb2_request *smb2req;
 383         struct smb_request *smb1req;
 384         struct timed_event *te;
 385         struct tevent_immediate *im;
 386         struct timeval request_time;
 387         struct file_id id;
 388         DATA_BLOB private_data;
 389         uint8_t out_oplock_level;
 390         uint32_t out_create_action;
 391         NTTIME out_creation_time;
 392         NTTIME out_last_access_time;
 393         NTTIME out_last_write_time;
 394         NTTIME out_change_time;
 395         uint64_t out_allocation_size;
 396         uint64_t out_end_of_file;
 397         uint32_t out_file_attributes;
 398         uint64_t out_file_id_persistent;
 399         uint64_t out_file_id_volatile;
 400         struct smb2_create_blobs out_context_blobs;
 401 };
 402
 403 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
 404                         struct tevent_context *ev,
 405                         struct smbd_smb2_request *smb2req,
 406                         uint8_t in_oplock_level,
 407                         uint32_t in_impersonation_level,
 408                         uint32_t in_desired_access,
 409                         uint32_t in_file_attributes,
 410                         uint32_t in_share_access,
 411                         uint32_t in_create_disposition,
 412                         uint32_t in_create_options,
 413                         const char *in_name,
 414                         struct smb2_create_blobs in_context_blobs)
 415 {
 416         struct tevent_req *req = NULL;
 417         struct smbd_smb2_create_state *state = NULL;
 418         NTSTATUS status;
 419         struct smb_request *smb1req = NULL;
 420         files_struct *result = NULL;
 421         int info;
 422         struct timespec write_time_ts;
 423         struct smb2_create_blobs out_context_blobs;
 424         int requested_oplock_level;
 425
 426         ZERO_STRUCT(out_context_blobs);
 427
 428         if(lp_fake_oplocks(SNUM(smb2req->tcon->compat_conn))) {
 429                 requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
 430         } else {
 431                 requested_oplock_level = in_oplock_level;
 432         }
 433
 434
 435         if (!smb2req->async) {
 436                 /* New create call. */
 437                 req = tevent_req_create(mem_ctx, &state,
 438                                 struct smbd_smb2_create_state);
 439                 if (req == NULL) {
 440                         return NULL;
 441                 }
 442                 state->smb2req = smb2req;
 443                 smb2req->subreq = req; /* So we can find this when going async. */
 444
 445                 smb1req = smbd_smb2_fake_smb_request(smb2req);
 446                 if (tevent_req_nomem(smb1req, req)) {
 447                         return tevent_req_post(req, ev);
 448                 }
 449                 state->smb1req = smb1req;
 450                 DEBUG(10,("smbd_smb2_create: name[%s]\n",
 451                         in_name));
 452         } else {
 453                 /* Re-entrant create call. */
 454                 req = smb2req->subreq;
 455                 state = tevent_req_data(req,
 456                                 struct smbd_smb2_create_state);
 457                 smb1req = state->smb1req;
 458                 DEBUG(10,("smbd_smb2_create_send: reentrant for file %s\n",
 459                         in_name ));
 460         }
 461
 462         if (IS_IPC(smb1req->conn)) {
 463                 const char *pipe_name = in_name;
 464
 465                 if (!lp_nt_pipe_support()) {
 466                         tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
 467                         return tevent_req_post(req, ev);
 468                 }
 469
 470                 /* Strip \\ off the name. */
 471                 if (pipe_name[0] == '\\') {
 472                         pipe_name++;
 473                 }
 474
 475                 status = open_np_file(smb1req, pipe_name, &result);
 476                 if (!NT_STATUS_IS_OK(status)) {
 477                         tevent_req_nterror(req, status);
 478                         return tevent_req_post(req, ev);
 479                 }
 480                 info = FILE_WAS_OPENED;
 481         } else if (CAN_PRINT(smb1req->conn)) {
 482                 status = file_new(smb1req, smb1req->conn, &result);
 483                 if(!NT_STATUS_IS_OK(status)) {
 484                         tevent_req_nterror(req, status);
 485                         return tevent_req_post(req, ev);
 486                 }
 487
 488                 status = print_fsp_open(smb1req,
 489                                         smb1req->conn,
 490                                         in_name,
 491                                         smb1req->vuid,
 492                                         result);
 493                 if (!NT_STATUS_IS_OK(status)) {
 494                         file_free(smb1req, result);
 495                         tevent_req_nterror(req, status);
 496                         return tevent_req_post(req, ev);
 497                 }
 498                 info = FILE_WAS_CREATED;
 499         } else {
 500                 char *fname;
 501                 struct smb_filename *smb_fname = NULL;
 502                 struct smb2_create_blob *exta = NULL;
 503                 struct ea_list *ea_list = NULL;
 504                 struct smb2_create_blob *mxac = NULL;
 505                 NTTIME max_access_time = 0;
 506                 struct smb2_create_blob *secd = NULL;
 507                 struct security_descriptor *sec_desc = NULL;
 508                 struct smb2_create_blob *dhnq = NULL;
 509                 struct smb2_create_blob *dhnc = NULL;
 510                 struct smb2_create_blob *alsi = NULL;
 511                 uint64_t allocation_size = 0;
 512                 struct smb2_create_blob *twrp = NULL;
 513                 struct smb2_create_blob *qfid = NULL;
 514
 515                 exta = smb2_create_blob_find(&in_context_blobs,
 516                                              SMB2_CREATE_TAG_EXTA);
 517                 mxac = smb2_create_blob_find(&in_context_blobs,
 518                                              SMB2_CREATE_TAG_MXAC);
 519                 secd = smb2_create_blob_find(&in_context_blobs,
 520                                              SMB2_CREATE_TAG_SECD);
 521                 dhnq = smb2_create_blob_find(&in_context_blobs,
 522                                              SMB2_CREATE_TAG_DHNQ);
 523                 dhnc = smb2_create_blob_find(&in_context_blobs,
 524                                              SMB2_CREATE_TAG_DHNC);
 525                 alsi = smb2_create_blob_find(&in_context_blobs,
 526                                              SMB2_CREATE_TAG_ALSI);
 527                 twrp = smb2_create_blob_find(&in_context_blobs,
 528                                              SMB2_CREATE_TAG_TWRP);
 529                 qfid = smb2_create_blob_find(&in_context_blobs,
 530                                              SMB2_CREATE_TAG_QFID);
 531
 532                 fname = talloc_strdup(state, in_name);
 533                 if (tevent_req_nomem(fname, req)) {
 534                         return tevent_req_post(req, ev);
 535                 }
 536
 537                 if (exta) {
 538                         if (dhnc) {
 539                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 540                                 return tevent_req_post(req, ev);
 541                         }
 542
 543                         ea_list = read_nttrans_ea_list(mem_ctx,
 544                                 (const char *)exta->data.data, exta->data.length);
 545                         if (!ea_list) {
 546                                 DEBUG(10,("smbd_smb2_create_send: read_ea_name_list failed.\n"));
 547                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 548                                 return tevent_req_post(req, ev);
 549                         }
 550                 }
 551
 552                 if (mxac) {
 553                         if (dhnc) {
 554                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 555                                 return tevent_req_post(req, ev);
 556                         }
 557
 558                         if (mxac->data.length == 0) {
 559                                 max_access_time = 0;
 560                         } else if (mxac->data.length == 8) {
 561                                 max_access_time = BVAL(mxac->data.data, 0);
 562                         } else {
 563                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 564                                 return tevent_req_post(req, ev);
 565                         }
 566                 }
 567
 568                 if (secd) {
 569                         enum ndr_err_code ndr_err;
 570
 571                         if (dhnc) {
 572                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 573                                 return tevent_req_post(req, ev);
 574                         }
 575
 576                         sec_desc = talloc_zero(state, struct security_descriptor);
 577                         if (tevent_req_nomem(sec_desc, req)) {
 578                                 return tevent_req_post(req, ev);
 579                         }
 580
 581                         ndr_err = ndr_pull_struct_blob(&secd->data,
 582                                 sec_desc, sec_desc,
 583                                 (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
 584                         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 585                                 DEBUG(2,("ndr_pull_security_descriptor failed: %s\n",
 586                                          ndr_errstr(ndr_err)));
 587                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 588                                 return tevent_req_post(req, ev);
 589                         }
 590                 }
 591
 592                 if (dhnq) {
 593                         if (dhnc) {
 594                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 595                                 return tevent_req_post(req, ev);
 596                         }
 597
 598                         if (dhnq->data.length != 16) {
 599                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 600                                 return tevent_req_post(req, ev);
 601                         }
 602                         /*
 603                          * we don't support durable handles yet
 604                          * and have to ignore this
 605                          */
 606                 }
 607
 608                 if (dhnc) {
 609                         if (dhnc->data.length != 16) {
 610                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 611                                 return tevent_req_post(req, ev);
 612                         }
 613                         /* we don't support durable handles yet */
 614                         tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 615                         return tevent_req_post(req, ev);
 616                 }
 617
 618                 if (alsi) {
 619                         if (dhnc) {
 620                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 621                                 return tevent_req_post(req, ev);
 622                         }
 623
 624                         if (alsi->data.length != 8) {
 625                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 626                                 return tevent_req_post(req, ev);
 627                         }
 628                         allocation_size = BVAL(alsi->data.data, 0);
 629                 }
 630
 631                 if (twrp) {
 632                         NTTIME nttime;
 633                         time_t t;
 634                         struct tm *tm;
 635
 636                         if (dhnc) {
 637                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 638                                 return tevent_req_post(req, ev);
 639                         }
 640
 641                         if (twrp->data.length != 8) {
 642                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 643                                 return tevent_req_post(req, ev);
 644                         }
 645
 646                         nttime = BVAL(twrp->data.data, 0);
 647                         t = nt_time_to_unix(nttime);
 648                         tm = gmtime(&t);
 649
 650                         TALLOC_FREE(fname);
 651                         fname = talloc_asprintf(state,
 652                                         "@GMT-%04u.%02u.%02u-%02u.%02u.%02u\\%s",
 653                                         tm->tm_year + 1900,
 654                                         tm->tm_mon + 1,
 655                                         tm->tm_mday,
 656                                         tm->tm_hour,
 657                                         tm->tm_min,
 658                                         tm->tm_sec,
 659                                         in_name);
 660                         if (tevent_req_nomem(fname, req)) {
 661                                 return tevent_req_post(req, ev);
 662                         }
 663                 }
 664
 665                 if (qfid) {
 666                         if (qfid->data.length != 0) {
 667                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 668                                 return tevent_req_post(req, ev);
 669                         }
 670                 }
 671
 672                 /* these are ignored for SMB2 */
 673                 in_create_options &= ~(0x10);/* NTCREATEX_OPTIONS_SYNC_ALERT */
 674                 in_create_options &= ~(0x20);/* NTCREATEX_OPTIONS_ASYNC_ALERT */
 675
 676                 /*
 677                  * For a DFS path the function parse_dfs_path()
 678                  * will do the path processing.
 679                  */
 680
 681                 if (!(smb1req->flags2 & FLAGS2_DFS_PATHNAMES)) {
 682                         /* convert '\\' into '/' */
 683                         status = check_path_syntax(fname);
 684                         if (!NT_STATUS_IS_OK(status)) {
 685                                 tevent_req_nterror(req, status);
 686                                 return tevent_req_post(req, ev);
 687                         }
 688                 }
 689
 690                 status = filename_convert(req,
 691                                           smb1req->conn,
 692                                           smb1req->flags2 & FLAGS2_DFS_PATHNAMES,
 693                                           fname,
 694                                           0,
 695                                           NULL,
 696                                           &smb_fname);
 697                 if (!NT_STATUS_IS_OK(status)) {
 698                         tevent_req_nterror(req, status);
 699                         return tevent_req_post(req, ev);
 700                 }
 701
 702                 in_file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
 703
 704                 status = SMB_VFS_CREATE_FILE(smb1req->conn,
 705                                              smb1req,
 706                                              0, /* root_dir_fid */
 707                                              smb_fname,
 708                                              in_desired_access,
 709                                              in_share_access,
 710                                              in_create_disposition,
 711                                              in_create_options,
 712                                              in_file_attributes,
 713                                              map_smb2_oplock_levels_to_samba(requested_oplock_level),
 714                                              allocation_size,
 715                                              0, /* private_flags */
 716                                              sec_desc,
 717                                              ea_list,
 718                                              &result,
 719                                              &info);
 720                 if (!NT_STATUS_IS_OK(status)) {
 721                         if (open_was_deferred(smb1req->mid)) {
 722                                 return req;
 723                         }
 724                         tevent_req_nterror(req, status);
 725                         return tevent_req_post(req, ev);
 726                 }
 727
 728                 if (mxac) {
 729                         NTTIME last_write_time;
 730
 731                         unix_timespec_to_nt_time(&last_write_time,
 732                                                  result->fsp_name->st.st_ex_mtime);
 733                         if (last_write_time != max_access_time) {
 734                                 uint8_t p[8];
 735                                 uint32_t max_access_granted;
 736                                 DATA_BLOB blob = data_blob_const(p, sizeof(p));
 737
 738                                 status = smbd_check_open_rights(smb1req->conn,
 739                                                         result->fsp_name,
 740                                                         SEC_FLAG_MAXIMUM_ALLOWED,
 741                                                         &max_access_granted);
 742
 743                                 SIVAL(p, 0, NT_STATUS_V(status));
 744                                 SIVAL(p, 4, max_access_granted);
 745
 746                                 status = smb2_create_blob_add(state,
 747                                                         &out_context_blobs,
 748                                                         SMB2_CREATE_TAG_MXAC,
 749                                                         blob);
 750                                 if (!NT_STATUS_IS_OK(status)) {
 751                                         tevent_req_nterror(req, status);
 752                                         return tevent_req_post(req, ev);
 753                                 }
 754                         }
 755                 }
 756
 757                 if (qfid) {
 758                         uint8_t p[32];
 759                         uint64_t file_index = get_FileIndex(result->conn,
 760                                                         &result->fsp_name->st);
 761                         DATA_BLOB blob = data_blob_const(p, sizeof(p));
 762
 763                         ZERO_STRUCT(p);
 764
 765                         /* From conversations with Microsoft engineers at
 766                            the MS plugfest. The first 8 bytes are the "volume index"
 767                            == inode, the second 8 bytes are the "volume id",
 768                            == dev. This will be updated in the SMB2 doc. */
 769                         SBVAL(p, 0, file_index);
 770                         SIVAL(p, 8, result->fsp_name->st.st_ex_dev);/* FileIndexHigh */
 771
 772                         status = smb2_create_blob_add(state, &out_context_blobs,
 773                                                       SMB2_CREATE_TAG_QFID,
 774                                                       blob);
 775                         if (!NT_STATUS_IS_OK(status)) {
 776                                 tevent_req_nterror(req, status);
 777                                 return tevent_req_post(req, ev);
 778                         }
 779                 }
 780         }
 781
 782         smb2req->compat_chain_fsp = smb1req->chain_fsp;
 783
 784         if(lp_fake_oplocks(SNUM(smb2req->tcon->compat_conn))) {
 785                 state->out_oplock_level = in_oplock_level;
 786         } else {
 787                 state->out_oplock_level = map_samba_oplock_levels_to_smb2(result->oplock_type);
 788         }
 789
 790         if ((in_create_disposition == FILE_SUPERSEDE)
 791             && (info == FILE_WAS_OVERWRITTEN)) {
 792                 state->out_create_action = FILE_WAS_SUPERSEDED;
 793         } else {
 794                 state->out_create_action = info;
 795         }
 796         state->out_file_attributes = dos_mode(result->conn,
 797                                            result->fsp_name);
 798         /* Deal with other possible opens having a modified
 799            write time. JRA. */
 800         ZERO_STRUCT(write_time_ts);
 801         get_file_infos(result->file_id, NULL, &write_time_ts);
 802         if (!null_timespec(write_time_ts)) {
 803                 update_stat_ex_mtime(&result->fsp_name->st, write_time_ts);
 804         }
 805
 806         unix_timespec_to_nt_time(&state->out_creation_time,
 807                         get_create_timespec(smb1req->conn, result,
 808                                         result->fsp_name));
 809         unix_timespec_to_nt_time(&state->out_last_access_time,
 810                         result->fsp_name->st.st_ex_atime);
 811         unix_timespec_to_nt_time(&state->out_last_write_time,
 812                         result->fsp_name->st.st_ex_mtime);
 813         unix_timespec_to_nt_time(&state->out_change_time,
 814                         get_change_timespec(smb1req->conn, result,
 815                                         result->fsp_name));
 816         state->out_allocation_size =
 817                         result->fsp_name->st.st_ex_blksize *
 818                         result->fsp_name->st.st_ex_blocks;
 819         state->out_end_of_file = result->fsp_name->st.st_ex_size;
 820         if (state->out_file_attributes == 0) {
 821                 state->out_file_attributes = FILE_ATTRIBUTE_NORMAL;
 822         }
 823         state->out_file_id_persistent = result->fnum;
 824         state->out_file_id_volatile = result->fnum;
 825         state->out_context_blobs = out_context_blobs;
 826
 827         tevent_req_done(req);
 828         return tevent_req_post(req, ev);
 829 }
 830
 831 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
 832                         TALLOC_CTX *mem_ctx,
 833                         uint8_t *out_oplock_level,
 834                         uint32_t *out_create_action,
 835                         NTTIME *out_creation_time,
 836                         NTTIME *out_last_access_time,
 837                         NTTIME *out_last_write_time,
 838                         NTTIME *out_change_time,
 839                         uint64_t *out_allocation_size,
 840                         uint64_t *out_end_of_file,
 841                         uint32_t *out_file_attributes,
 842                         uint64_t *out_file_id_persistent,
 843                         uint64_t *out_file_id_volatile,
 844                         struct smb2_create_blobs *out_context_blobs)
 845 {
 846         NTSTATUS status;
 847         struct smbd_smb2_create_state *state = tevent_req_data(req,
 848                                                struct smbd_smb2_create_state);
 849
 850         if (tevent_req_is_nterror(req, &status)) {
 851                 tevent_req_received(req);
 852                 return status;
 853         }
 854
 855         *out_oplock_level       = state->out_oplock_level;
 856         *out_create_action      = state->out_create_action;
 857         *out_creation_time      = state->out_creation_time;
 858         *out_last_access_time   = state->out_last_access_time;
 859         *out_last_write_time    = state->out_last_write_time;
 860         *out_change_time        = state->out_change_time;
 861         *out_allocation_size    = state->out_allocation_size;
 862         *out_end_of_file        = state->out_end_of_file;
 863         *out_file_attributes    = state->out_file_attributes;
 864         *out_file_id_persistent = state->out_file_id_persistent;
 865         *out_file_id_volatile   = state->out_file_id_volatile;
 866         *out_context_blobs      = state->out_context_blobs;
 867
 868         talloc_steal(mem_ctx, state->out_context_blobs.blobs);
 869
 870         tevent_req_received(req);
 871         return NT_STATUS_OK;
 872 }
 873
 874 /*********************************************************
 875  Code for dealing with deferred opens.
 876 *********************************************************/
 877
 878 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
 879                         struct timeval *p_request_time,
 880                         void **pp_state)
 881 {
 882         struct smbd_smb2_create_state *state = NULL;
 883         struct tevent_req *req = NULL;
 884
 885         if (!smb2req) {
 886                 return false;
 887         }
 888         if (!smb2req->async) {
 889                 return false;
 890         }
 891         req = smb2req->subreq;
 892         if (!req) {
 893                 return false;
 894         }
 895         state = tevent_req_data(req, struct smbd_smb2_create_state);
 896         if (!state) {
 897                 return false;
 898         }
 899         if (p_request_time) {
 900                 *p_request_time = state->request_time;
 901         }
 902         if (pp_state) {
 903                 *pp_state = (void *)state->private_data.data;
 904         }
 905         return true;
 906 }
 907
 908 /*********************************************************
 909  Re-process this call early - requested by message or
 910  close.
 911 *********************************************************/
 912
 913 static struct smbd_smb2_request *find_open_smb2req(uint64_t mid)
 914 {
 915         struct smbd_server_connection *sconn = smbd_server_conn;
 916         struct smbd_smb2_request *smb2req;
 917
 918         for (smb2req = sconn->smb2.requests; smb2req; smb2req = smb2req->next) {
 919                 uint64_t message_id;
 920                 if (smb2req->subreq == NULL) {
 921                         /* This message has been processed. */
 922                         continue;
 923                 }
 924                 if (!tevent_req_is_in_progress(smb2req->subreq)) {
 925                         /* This message has been processed. */
 926                         continue;
 927                 }
 928                 message_id = get_mid_from_smb2req(smb2req);
 929                 if (message_id == mid) {
 930                         return smb2req;
 931                 }
 932         }
 933         return NULL;
 934 }
 935
 936 bool open_was_deferred_smb2(uint64_t mid)
 937 {
 938         struct smbd_smb2_create_state *state = NULL;
 939         struct smbd_smb2_request *smb2req = find_open_smb2req(mid);
 940
 941         if (!smb2req) {
 942                 DEBUG(10,("open_was_deferred_smb2: mid %llu smb2req == NULL\n",
 943                         (unsigned long long)mid));
 944                 return false;
 945         }
 946         if (!smb2req->subreq) {
 947                 return false;
 948         }
 949         if (!tevent_req_is_in_progress(smb2req->subreq)) {
 950                 return false;
 951         }
 952         state = tevent_req_data(smb2req->subreq,
 953                         struct smbd_smb2_create_state);
 954         if (!state) {
 955                 return false;
 956         }
 957         /* It's not in progress if there's no timeout event. */
 958         if (!state->te) {
 959                 return false;
 960         }
 961
 962         DEBUG(10,("open_was_deferred_smb2: mid = %llu\n",
 963                         (unsigned long long)mid));
 964
 965         return true;
 966 }
 967
 968 static void remove_deferred_open_message_smb2_internal(struct smbd_smb2_request *smb2req,
 969                                                         uint64_t mid)
 970 {
 971         struct smbd_smb2_create_state *state = NULL;
 972
 973         if (!smb2req->subreq) {
 974                 return;
 975         }
 976         if (!tevent_req_is_in_progress(smb2req->subreq)) {
 977                 return;
 978         }
 979         state = tevent_req_data(smb2req->subreq,
 980                         struct smbd_smb2_create_state);
 981         if (!state) {
 982                 return;
 983         }
 984
 985         DEBUG(10,("remove_deferred_open_message_smb2_internal: "
 986                 "mid %llu\n",
 987                 (unsigned long long)mid ));
 988
 989         /* Ensure we don't have any outstanding timer event. */
 990         TALLOC_FREE(state->te);
 991         /* Ensure we don't have any outstanding immediate event. */
 992         TALLOC_FREE(state->im);
 993 }
 994
 995 void remove_deferred_open_message_smb2(uint64_t mid)
 996 {
 997         struct smbd_smb2_request *smb2req = find_open_smb2req(mid);
 998
 999         if (!smb2req) {
1000                 DEBUG(10,("remove_deferred_open_message_smb2: "
1001                         "can't find mid %llu\n",
1002                         (unsigned long long)mid ));
1003                 return;
1004         }
1005         remove_deferred_open_message_smb2_internal(smb2req, mid);
1006 }
1007
1008 static void smbd_smb2_create_request_dispatch_immediate(struct tevent_context *ctx,
1009                                         struct tevent_immediate *im,
1010                                         void *private_data)
1011 {
1012         struct smbd_smb2_request *smb2req = talloc_get_type_abort(private_data,
1013                                         struct smbd_smb2_request);
1014         struct smbd_server_connection *sconn = smb2req->sconn;
1015         uint64_t mid = get_mid_from_smb2req(smb2req);
1016         NTSTATUS status;
1017
1018         DEBUG(10,("smbd_smb2_create_request_dispatch_immediate: "
1019                 "re-dispatching mid %llu\n",
1020                 (unsigned long long)mid ));
1021
1022         status = smbd_smb2_request_dispatch(smb2req);
1023         if (!NT_STATUS_IS_OK(status)) {
1024                 smbd_server_connection_terminate(sconn, nt_errstr(status));
1025                 return;
1026         }
1027 }
1028
1029 void schedule_deferred_open_message_smb2(uint64_t mid)
1030 {
1031         struct smbd_smb2_create_state *state = NULL;
1032         struct smbd_smb2_request *smb2req = find_open_smb2req(mid);
1033
1034         if (!smb2req) {
1035                 DEBUG(10,("schedule_deferred_open_message_smb2: "
1036                         "can't find mid %llu\n",
1037                         (unsigned long long)mid ));
1038                 return;
1039         }
1040         if (!smb2req->subreq) {
1041                 return;
1042         }
1043         if (!tevent_req_is_in_progress(smb2req->subreq)) {
1044                 return;
1045         }
1046         state = tevent_req_data(smb2req->subreq,
1047                         struct smbd_smb2_create_state);
1048         if (!state) {
1049                 return;
1050         }
1051
1052         /* Ensure we don't have any outstanding timer event. */
1053         TALLOC_FREE(state->te);
1054         /* Ensure we don't have any outstanding immediate event. */
1055         TALLOC_FREE(state->im);
1056
1057         /*
1058          * This is subtle. We must null out the callback
1059          * before resheduling, else the first call to
1060          * tevent_req_nterror() causes the _receive()
1061          * function to be called, this causing tevent_req_post()
1062          * to crash.
1063          */
1064         tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1065
1066         state->im = tevent_create_immediate(smb2req);
1067         if (!state->im) {
1068                 smbd_server_connection_terminate(smb2req->sconn,
1069                         nt_errstr(NT_STATUS_NO_MEMORY));
1070         }
1071
1072         DEBUG(10,("schedule_deferred_open_message_smb2: "
1073                 "re-processing mid %llu\n",
1074                 (unsigned long long)mid ));
1075
1076         tevent_schedule_immediate(state->im,
1077                         smb2req->sconn->smb2.event_ctx,
1078                         smbd_smb2_create_request_dispatch_immediate,
1079                         smb2req);
1080 }
1081
1082 /*********************************************************
1083  Re-process this call.
1084 *********************************************************/
1085
1086 static void smb2_deferred_open_timer(struct event_context *ev,
1087                                         struct timed_event *te,
1088                                         struct timeval _tval,
1089                                         void *private_data)
1090 {
1091         NTSTATUS status;
1092         struct smbd_smb2_create_state *state = NULL;
1093         struct smbd_smb2_request *smb2req = talloc_get_type(private_data,
1094                                                 struct smbd_smb2_request);
1095
1096         DEBUG(10,("smb2_deferred_open_timer: [idx=%d], %s\n",
1097                 smb2req->current_idx,
1098                 tevent_req_default_print(smb2req->subreq, talloc_tos()) ));
1099
1100         state = tevent_req_data(smb2req->subreq,
1101                         struct smbd_smb2_create_state);
1102         if (!state) {
1103                 return;
1104         }
1105         /*
1106          * Null this out, don't talloc_free. It will
1107          * be talloc_free'd by the tevent library when
1108          * this returns.
1109          */
1110         state->te = NULL;
1111         /* Ensure we don't have any outstanding immediate event. */
1112         TALLOC_FREE(state->im);
1113
1114         /*
1115          * This is subtle. We must null out the callback
1116          * before resheduling, else the first call to
1117          * tevent_req_nterror() causes the _receive()
1118          * function to be called, this causing tevent_req_post()
1119          * to crash.
1120          */
1121         tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1122
1123         status = smbd_smb2_request_dispatch(smb2req);
1124
1125         if (!NT_STATUS_IS_OK(status)) {
1126                 smbd_server_connection_terminate(smb2req->sconn,
1127                                 nt_errstr(status));
1128         }
1129 }
1130
1131 static bool smbd_smb2_create_cancel(struct tevent_req *req)
1132 {
1133         struct smbd_smb2_request *smb2req = NULL;
1134         struct smbd_smb2_create_state *state = tevent_req_data(req,
1135                                 struct smbd_smb2_create_state);
1136         uint64_t mid;
1137
1138         if (!state) {
1139                 return false;
1140         }
1141
1142         if (!state->smb2req) {
1143                 return false;
1144         }
1145
1146         smb2req = state->smb2req;
1147         mid = get_mid_from_smb2req(smb2req);
1148
1149         remove_deferred_open_entry(state->id, mid);
1150         remove_deferred_open_message_smb2_internal(smb2req, mid);
1151         smb2req->cancelled = true;
1152
1153         tevent_req_done(req);
1154         return true;
1155 }
1156
1157 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
1158                                 struct timeval request_time,
1159                                 struct timeval timeout,
1160                                 struct file_id id,
1161                                 char *private_data,
1162                                 size_t priv_len)
1163 {
1164         struct tevent_req *req = NULL;
1165         struct smbd_smb2_create_state *state = NULL;
1166         struct timeval end_time;
1167
1168         if (!smb2req) {
1169                 return false;
1170         }
1171         req = smb2req->subreq;
1172         if (!req) {
1173                 return false;
1174         }
1175         state = tevent_req_data(req, struct smbd_smb2_create_state);
1176         if (!state) {
1177                 return false;
1178         }
1179         state->id = id;
1180         state->request_time = request_time;
1181         state->private_data = data_blob_talloc(state, private_data,
1182                                                 priv_len);
1183         if (!state->private_data.data) {
1184                 return false;
1185         }
1186
1187 #if 1
1188         /* Boo - turns out this isn't what W2K8R2
1189            does. It actually sends the STATUS_PENDING
1190            message followed by the STATUS_SHARING_VIOLATION
1191            message. Surely this means that all open
1192            calls (even on directories) will potentially
1193            fail in a chain.... ? And I've seen directory
1194            opens as the start of a chain. JRA.
1195
1196            Update: 19th May 2010. Talking with Microsoft
1197            engineers at the plugfest this is a bug in
1198            Windows. Re-enable this code.
1199         */
1200         /*
1201          * More subtlety. To match W2K8R2 don't
1202          * send a "gone async" message if it's simply
1203          * a STATUS_SHARING_VIOLATION (short) wait, not
1204          * an oplock break wait. We do this by prematurely
1205          * setting smb2req->async flag.
1206          */
1207         if (timeout.tv_sec < 2) {
1208                 DEBUG(10,("push_deferred_open_message_smb2: "
1209                         "short timer wait (usec = %u). "
1210                         "Don't send async message.\n",
1211                         (unsigned int)timeout.tv_usec ));
1212                 smb2req->async = true;
1213         }
1214 #endif
1215
1216         /* Re-schedule us to retry on timer expiry. */
1217         end_time = timeval_sum(&request_time, &timeout);
1218
1219         DEBUG(10,("push_deferred_open_message_smb2: "
1220                 "timeout at %s\n",
1221                 timeval_string(talloc_tos(),
1222                                 &end_time,
1223                                 true) ));
1224
1225         state->te = event_add_timed(smb2req->sconn->smb2.event_ctx,
1226                                 state,
1227                                 end_time,
1228                                 smb2_deferred_open_timer,
1229                                 smb2req);
1230         if (!state->te) {
1231                 return false;
1232         }
1233
1234         /* allow this request to be canceled */
1235         tevent_req_set_cancel_fn(req, smbd_smb2_create_cancel);
1236
1237         return true;
1238 }