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 "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
  30 int map_smb2_oplock_levels_to_samba(uint8_t in_oplock_level)
  31 {
  32         switch(in_oplock_level) {
  33         case SMB2_OPLOCK_LEVEL_NONE:
  34                 return NO_OPLOCK;
  35         case SMB2_OPLOCK_LEVEL_II:
  36                 return LEVEL_II_OPLOCK;
  37         case SMB2_OPLOCK_LEVEL_EXCLUSIVE:
  38                 return EXCLUSIVE_OPLOCK;
  39         case SMB2_OPLOCK_LEVEL_BATCH:
  40                 return BATCH_OPLOCK;
  41         case SMB2_OPLOCK_LEVEL_LEASE:
  42                 DEBUG(2,("map_smb2_oplock_levels_to_samba: "
  43                         "LEASE_OPLOCK_REQUESTED\n"));
  44                 return NO_OPLOCK;
  45         default:
  46                 DEBUG(2,("map_smb2_oplock_levels_to_samba: "
  47                         "unknown level %u\n",
  48                         (unsigned int)in_oplock_level));
  49                 return NO_OPLOCK;
  50         }
  51 }
  52
  53 static uint8_t map_samba_oplock_levels_to_smb2(int oplock_type)
  54 {
  55         if (BATCH_OPLOCK_TYPE(oplock_type)) {
  56                 return SMB2_OPLOCK_LEVEL_BATCH;
  57         } else if (EXCLUSIVE_OPLOCK_TYPE(oplock_type)) {
  58                 return SMB2_OPLOCK_LEVEL_EXCLUSIVE;
  59         } else if (oplock_type == LEVEL_II_OPLOCK) {
  60                 /*
  61                  * Don't use LEVEL_II_OPLOCK_TYPE here as
  62                  * this also includes FAKE_LEVEL_II_OPLOCKs
  63                  * which are internal only.
  64                  */
  65                 return SMB2_OPLOCK_LEVEL_II;
  66         } else {
  67                 return SMB2_OPLOCK_LEVEL_NONE;
  68         }
  69 }
  70
  71 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
  72                         struct tevent_context *ev,
  73                         struct smbd_smb2_request *smb2req,
  74                         uint8_t in_oplock_level,
  75                         uint32_t in_impersonation_level,
  76                         uint32_t in_desired_access,
  77                         uint32_t in_file_attributes,
  78                         uint32_t in_share_access,
  79                         uint32_t in_create_disposition,
  80                         uint32_t in_create_options,
  81                         const char *in_name,
  82                         struct smb2_create_blobs in_context_blobs);
  83 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
  84                         TALLOC_CTX *mem_ctx,
  85                         uint8_t *out_oplock_level,
  86                         uint32_t *out_create_action,
  87                         NTTIME *out_creation_time,
  88                         NTTIME *out_last_access_time,
  89                         NTTIME *out_last_write_time,
  90                         NTTIME *out_change_time,
  91                         uint64_t *out_allocation_size,
  92                         uint64_t *out_end_of_file,
  93                         uint32_t *out_file_attributes,
  94                         uint64_t *out_file_id_persistent,
  95                         uint64_t *out_file_id_volatile,
  96                         struct smb2_create_blobs *out_context_blobs);
  97
  98 static void smbd_smb2_request_create_done(struct tevent_req *tsubreq);
  99 NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *smb2req)
 100 {
 101         const uint8_t *inbody;
 102         int i = smb2req->current_idx;
 103         uint8_t in_oplock_level;
 104         uint32_t in_impersonation_level;
 105         uint32_t in_desired_access;
 106         uint32_t in_file_attributes;
 107         uint32_t in_share_access;
 108         uint32_t in_create_disposition;
 109         uint32_t in_create_options;
 110         uint16_t in_name_offset;
 111         uint16_t in_name_length;
 112         DATA_BLOB in_name_buffer;
 113         char *in_name_string;
 114         size_t in_name_string_size;
 115         uint32_t name_offset = 0;
 116         uint32_t name_available_length = 0;
 117         uint32_t in_context_offset;
 118         uint32_t in_context_length;
 119         DATA_BLOB in_context_buffer;
 120         struct smb2_create_blobs in_context_blobs;
 121         uint32_t context_offset = 0;
 122         uint32_t context_available_length = 0;
 123         uint32_t dyn_offset;
 124         NTSTATUS status;
 125         bool ok;
 126         struct tevent_req *tsubreq;
 127
 128         status = smbd_smb2_request_verify_sizes(smb2req, 0x39);
 129         if (!NT_STATUS_IS_OK(status)) {
 130                 return smbd_smb2_request_error(smb2req, status);
 131         }
 132         inbody = (const uint8_t *)smb2req->in.vector[i+1].iov_base;
 133
 134         in_oplock_level         = CVAL(inbody, 0x03);
 135         in_impersonation_level  = IVAL(inbody, 0x04);
 136         in_desired_access       = IVAL(inbody, 0x18);
 137         in_file_attributes      = IVAL(inbody, 0x1C);
 138         in_share_access         = IVAL(inbody, 0x20);
 139         in_create_disposition   = IVAL(inbody, 0x24);
 140         in_create_options       = IVAL(inbody, 0x28);
 141         in_name_offset          = SVAL(inbody, 0x2C);
 142         in_name_length          = SVAL(inbody, 0x2E);
 143         in_context_offset       = IVAL(inbody, 0x30);
 144         in_context_length       = IVAL(inbody, 0x34);
 145
 146         /*
 147          * First check if the dynamic name and context buffers
 148          * are correctly specified.
 149          *
 150          * Note: That we don't check if the name and context buffers
 151          *       overlap
 152          */
 153
 154         dyn_offset = SMB2_HDR_BODY + smb2req->in.vector[i+1].iov_len;
 155
 156         if (in_name_offset == 0 && in_name_length == 0) {
 157                 /* This is ok */
 158                 name_offset = 0;
 159         } else if (in_name_offset < dyn_offset) {
 160                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 161         } else {
 162                 name_offset = in_name_offset - dyn_offset;
 163         }
 164
 165         if (name_offset > smb2req->in.vector[i+2].iov_len) {
 166                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 167         }
 168
 169         name_available_length = smb2req->in.vector[i+2].iov_len - name_offset;
 170
 171         if (in_name_length > name_available_length) {
 172                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 173         }
 174
 175         in_name_buffer.data = (uint8_t *)smb2req->in.vector[i+2].iov_base +
 176                               name_offset;
 177         in_name_buffer.length = in_name_length;
 178
 179         if (in_context_offset == 0 && in_context_length == 0) {
 180                 /* This is ok */
 181                 context_offset = 0;
 182         } else if (in_context_offset < dyn_offset) {
 183                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 184         } else {
 185                 context_offset = in_context_offset - dyn_offset;
 186         }
 187
 188         if (context_offset > smb2req->in.vector[i+2].iov_len) {
 189                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 190         }
 191
 192         context_available_length = smb2req->in.vector[i+2].iov_len - context_offset;
 193
 194         if (in_context_length > context_available_length) {
 195                 return smbd_smb2_request_error(smb2req, NT_STATUS_INVALID_PARAMETER);
 196         }
 197
 198         in_context_buffer.data = (uint8_t *)smb2req->in.vector[i+2].iov_base +
 199                                   context_offset;
 200         in_context_buffer.length = in_context_length;
 201
 202         /*
 203          * Now interpret the name and context buffers
 204          */
 205
 206         ok = convert_string_talloc(smb2req, CH_UTF16, CH_UNIX,
 207                                    in_name_buffer.data,
 208                                    in_name_buffer.length,
 209                                    &in_name_string,
 210                                    &in_name_string_size);
 211         if (!ok) {
 212                 return smbd_smb2_request_error(smb2req, NT_STATUS_ILLEGAL_CHARACTER);
 213         }
 214
 215         if (in_name_buffer.length == 0) {
 216                 in_name_string_size = 0;
 217         }
 218
 219         if (strlen(in_name_string) != in_name_string_size) {
 220                 return smbd_smb2_request_error(smb2req, NT_STATUS_OBJECT_NAME_INVALID);
 221         }
 222
 223         ZERO_STRUCT(in_context_blobs);
 224         status = smb2_create_blob_parse(smb2req, in_context_buffer, &in_context_blobs);
 225         if (!NT_STATUS_IS_OK(status)) {
 226                 return smbd_smb2_request_error(smb2req, status);
 227         }
 228
 229         tsubreq = smbd_smb2_create_send(smb2req,
 230                                        smb2req->sconn->smb2.event_ctx,
 231                                        smb2req,
 232                                        in_oplock_level,
 233                                        in_impersonation_level,
 234                                        in_desired_access,
 235                                        in_file_attributes,
 236                                        in_share_access,
 237                                        in_create_disposition,
 238                                        in_create_options,
 239                                        in_name_string,
 240                                        in_context_blobs);
 241         if (tsubreq == NULL) {
 242                 smb2req->subreq = NULL;
 243                 return smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
 244         }
 245         tevent_req_set_callback(tsubreq, smbd_smb2_request_create_done, smb2req);
 246
 247         return smbd_smb2_request_pending_queue(smb2req, tsubreq);
 248 }
 249
 250 static uint64_t get_mid_from_smb2req(struct smbd_smb2_request *smb2req)
 251 {
 252         uint8_t *reqhdr = (uint8_t *)smb2req->out.vector[smb2req->current_idx].iov_base;
 253         return BVAL(reqhdr, SMB2_HDR_MESSAGE_ID);
 254 }
 255
 256 static void smbd_smb2_request_create_done(struct tevent_req *tsubreq)
 257 {
 258         struct smbd_smb2_request *smb2req = tevent_req_callback_data(tsubreq,
 259                                         struct smbd_smb2_request);
 260         int i = smb2req->current_idx;
 261         uint8_t *outhdr;
 262         DATA_BLOB outbody;
 263         DATA_BLOB outdyn;
 264         uint8_t out_oplock_level = 0;
 265         uint32_t out_create_action = 0;
 266         NTTIME out_creation_time = 0;
 267         NTTIME out_last_access_time = 0;
 268         NTTIME out_last_write_time = 0;
 269         NTTIME out_change_time = 0;
 270         uint64_t out_allocation_size = 0;
 271         uint64_t out_end_of_file = 0;
 272         uint32_t out_file_attributes = 0;
 273         uint64_t out_file_id_persistent = 0;
 274         uint64_t out_file_id_volatile = 0;
 275         struct smb2_create_blobs out_context_blobs;
 276         DATA_BLOB out_context_buffer;
 277         uint16_t out_context_buffer_offset = 0;
 278         NTSTATUS status;
 279         NTSTATUS error; /* transport error */
 280
 281         if (smb2req->cancelled) {
 282                 uint64_t mid = get_mid_from_smb2req(smb2req);
 283                 DEBUG(10,("smbd_smb2_request_create_done: cancelled mid %llu\n",
 284                         (unsigned long long)mid ));
 285                 error = smbd_smb2_request_error(smb2req, NT_STATUS_CANCELLED);
 286                 if (!NT_STATUS_IS_OK(error)) {
 287                         smbd_server_connection_terminate(smb2req->sconn,
 288                                 nt_errstr(error));
 289                         return;
 290                 }
 291                 return;
 292         }
 293
 294         status = smbd_smb2_create_recv(tsubreq,
 295                                        smb2req,
 296                                        &out_oplock_level,
 297                                        &out_create_action,
 298                                        &out_creation_time,
 299                                        &out_last_access_time,
 300                                        &out_last_write_time,
 301                                        &out_change_time,
 302                                        &out_allocation_size,
 303                                        &out_end_of_file,
 304                                        &out_file_attributes,
 305                                        &out_file_id_persistent,
 306                                        &out_file_id_volatile,
 307                                        &out_context_blobs);
 308         if (!NT_STATUS_IS_OK(status)) {
 309                 error = smbd_smb2_request_error(smb2req, status);
 310                 if (!NT_STATUS_IS_OK(error)) {
 311                         smbd_server_connection_terminate(smb2req->sconn,
 312                                                          nt_errstr(error));
 313                         return;
 314                 }
 315                 return;
 316         }
 317
 318         status = smb2_create_blob_push(smb2req, &out_context_buffer, out_context_blobs);
 319         if (!NT_STATUS_IS_OK(status)) {
 320                 error = smbd_smb2_request_error(smb2req, status);
 321                 if (!NT_STATUS_IS_OK(error)) {
 322                         smbd_server_connection_terminate(smb2req->sconn,
 323                                                          nt_errstr(error));
 324                         return;
 325                 }
 326                 return;
 327         }
 328
 329         if (out_context_buffer.length > 0) {
 330                 out_context_buffer_offset = SMB2_HDR_BODY + 0x58;
 331         }
 332
 333         outhdr = (uint8_t *)smb2req->out.vector[i].iov_base;
 334
 335         outbody = data_blob_talloc(smb2req->out.vector, NULL, 0x58);
 336         if (outbody.data == NULL) {
 337                 error = smbd_smb2_request_error(smb2req, NT_STATUS_NO_MEMORY);
 338                 if (!NT_STATUS_IS_OK(error)) {
 339                         smbd_server_connection_terminate(smb2req->sconn,
 340                                                          nt_errstr(error));
 341                         return;
 342                 }
 343                 return;
 344         }
 345
 346         SSVAL(outbody.data, 0x00, 0x58 + 1);    /* struct size */
 347         SCVAL(outbody.data, 0x02,
 348               out_oplock_level);                /* oplock level */
 349         SCVAL(outbody.data, 0x03, 0);           /* reserved */
 350         SIVAL(outbody.data, 0x04,
 351               out_create_action);               /* create action */
 352         SBVAL(outbody.data, 0x08,
 353               out_creation_time);               /* creation time */
 354         SBVAL(outbody.data, 0x10,
 355               out_last_access_time);            /* last access time */
 356         SBVAL(outbody.data, 0x18,
 357               out_last_write_time);             /* last write time */
 358         SBVAL(outbody.data, 0x20,
 359               out_change_time);                 /* change time */
 360         SBVAL(outbody.data, 0x28,
 361               out_allocation_size);             /* allocation size */
 362         SBVAL(outbody.data, 0x30,
 363               out_end_of_file);                 /* end of file */
 364         SIVAL(outbody.data, 0x38,
 365               out_file_attributes);             /* file attributes */
 366         SIVAL(outbody.data, 0x3C, 0);           /* reserved */
 367         SBVAL(outbody.data, 0x40,
 368               out_file_id_persistent);          /* file id (persistent) */
 369         SBVAL(outbody.data, 0x48,
 370               out_file_id_volatile);            /* file id (volatile) */
 371         SIVAL(outbody.data, 0x50,
 372               out_context_buffer_offset);       /* create contexts offset */
 373         SIVAL(outbody.data, 0x54,
 374               out_context_buffer.length);       /* create contexts length */
 375
 376         outdyn = out_context_buffer;
 377
 378         error = smbd_smb2_request_done(smb2req, outbody, &outdyn);
 379         if (!NT_STATUS_IS_OK(error)) {
 380                 smbd_server_connection_terminate(smb2req->sconn,
 381                                                  nt_errstr(error));
 382                 return;
 383         }
 384 }
 385
 386 struct smbd_smb2_create_state {
 387         struct smbd_smb2_request *smb2req;
 388         struct smb_request *smb1req;
 389         struct timed_event *te;
 390         struct tevent_immediate *im;
 391         struct timeval request_time;
 392         struct file_id id;
 393         DATA_BLOB private_data;
 394         uint8_t out_oplock_level;
 395         uint32_t out_create_action;
 396         NTTIME out_creation_time;
 397         NTTIME out_last_access_time;
 398         NTTIME out_last_write_time;
 399         NTTIME out_change_time;
 400         uint64_t out_allocation_size;
 401         uint64_t out_end_of_file;
 402         uint32_t out_file_attributes;
 403         uint64_t out_file_id_persistent;
 404         uint64_t out_file_id_volatile;
 405         struct smb2_create_blobs out_context_blobs;
 406 };
 407
 408 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
 409                         struct tevent_context *ev,
 410                         struct smbd_smb2_request *smb2req,
 411                         uint8_t in_oplock_level,
 412                         uint32_t in_impersonation_level,
 413                         uint32_t in_desired_access,
 414                         uint32_t in_file_attributes,
 415                         uint32_t in_share_access,
 416                         uint32_t in_create_disposition,
 417                         uint32_t in_create_options,
 418                         const char *in_name,
 419                         struct smb2_create_blobs in_context_blobs)
 420 {
 421         struct tevent_req *req = NULL;
 422         struct smbd_smb2_create_state *state = NULL;
 423         NTSTATUS status;
 424         struct smb_request *smb1req = NULL;
 425         files_struct *result = NULL;
 426         int info;
 427         struct timespec write_time_ts;
 428         struct smb2_create_blobs out_context_blobs;
 429         int requested_oplock_level;
 430
 431         ZERO_STRUCT(out_context_blobs);
 432
 433         if(lp_fake_oplocks(SNUM(smb2req->tcon->compat_conn))) {
 434                 requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
 435         } else {
 436                 requested_oplock_level = in_oplock_level;
 437         }
 438
 439
 440         if (!smb2req->async) {
 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                 smb2req->subreq = req; /* So we can find this when going async. */
 449
 450                 smb1req = smbd_smb2_fake_smb_request(smb2req);
 451                 if (tevent_req_nomem(smb1req, req)) {
 452                         return tevent_req_post(req, ev);
 453                 }
 454                 state->smb1req = smb1req;
 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         if (IS_IPC(smb1req->conn)) {
 468                 const char *pipe_name = in_name;
 469
 470                 if (!lp_nt_pipe_support()) {
 471                         tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
 472                         return tevent_req_post(req, ev);
 473                 }
 474
 475                 /* Strip \\ off the name. */
 476                 if (pipe_name[0] == '\\') {
 477                         pipe_name++;
 478                 }
 479
 480                 status = open_np_file(smb1req, pipe_name, &result);
 481                 if (!NT_STATUS_IS_OK(status)) {
 482                         tevent_req_nterror(req, status);
 483                         return tevent_req_post(req, ev);
 484                 }
 485                 info = FILE_WAS_OPENED;
 486         } else if (CAN_PRINT(smb1req->conn)) {
 487                 status = file_new(smb1req, smb1req->conn, &result);
 488                 if(!NT_STATUS_IS_OK(status)) {
 489                         tevent_req_nterror(req, status);
 490                         return tevent_req_post(req, ev);
 491                 }
 492
 493                 status = print_spool_open(result, in_name,
 494                                           smb1req->vuid);
 495                 if (!NT_STATUS_IS_OK(status)) {
 496                         file_free(smb1req, result);
 497                         tevent_req_nterror(req, status);
 498                         return tevent_req_post(req, ev);
 499                 }
 500                 info = FILE_WAS_CREATED;
 501         } else {
 502                 char *fname;
 503                 struct smb_filename *smb_fname = NULL;
 504                 struct smb2_create_blob *exta = NULL;
 505                 struct ea_list *ea_list = NULL;
 506                 struct smb2_create_blob *mxac = NULL;
 507                 NTTIME max_access_time = 0;
 508                 struct smb2_create_blob *secd = NULL;
 509                 struct security_descriptor *sec_desc = NULL;
 510                 struct smb2_create_blob *dhnq = NULL;
 511                 struct smb2_create_blob *dhnc = NULL;
 512                 struct smb2_create_blob *alsi = NULL;
 513                 uint64_t allocation_size = 0;
 514                 struct smb2_create_blob *twrp = NULL;
 515                 struct smb2_create_blob *qfid = NULL;
 516
 517                 exta = smb2_create_blob_find(&in_context_blobs,
 518                                              SMB2_CREATE_TAG_EXTA);
 519                 mxac = smb2_create_blob_find(&in_context_blobs,
 520                                              SMB2_CREATE_TAG_MXAC);
 521                 secd = smb2_create_blob_find(&in_context_blobs,
 522                                              SMB2_CREATE_TAG_SECD);
 523                 dhnq = smb2_create_blob_find(&in_context_blobs,
 524                                              SMB2_CREATE_TAG_DHNQ);
 525                 dhnc = smb2_create_blob_find(&in_context_blobs,
 526                                              SMB2_CREATE_TAG_DHNC);
 527                 alsi = smb2_create_blob_find(&in_context_blobs,
 528                                              SMB2_CREATE_TAG_ALSI);
 529                 twrp = smb2_create_blob_find(&in_context_blobs,
 530                                              SMB2_CREATE_TAG_TWRP);
 531                 qfid = smb2_create_blob_find(&in_context_blobs,
 532                                              SMB2_CREATE_TAG_QFID);
 533
 534                 fname = talloc_strdup(state, in_name);
 535                 if (tevent_req_nomem(fname, req)) {
 536                         return tevent_req_post(req, ev);
 537                 }
 538
 539                 if (exta) {
 540                         if (dhnc) {
 541                                 tevent_req_nterror(req,NT_STATUS_OBJECT_NAME_NOT_FOUND);
 542                                 return tevent_req_post(req, ev);
 543                         }
 544
 545                         ea_list = read_nttrans_ea_list(mem_ctx,
 546                                 (const char *)exta->data.data, exta->data.length);
 547                         if (!ea_list) {
 548                                 DEBUG(10,("smbd_smb2_create_send: read_ea_name_list failed.\n"));
 549                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 550                                 return tevent_req_post(req, ev);
 551                         }
 552                 }
 553
 554                 if (mxac) {
 555                         if (dhnc) {
 556                                 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 557                                 return tevent_req_post(req, ev);
 558                         }
 559
 560                         if (mxac->data.length == 0) {
 561                                 max_access_time = 0;
 562                         } else if (mxac->data.length == 8) {
 563                                 max_access_time = BVAL(mxac->data.data, 0);
 564                         } else {
 565                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 566                                 return tevent_req_post(req, ev);
 567                         }
 568                 }
 569
 570                 if (secd) {
 571                         enum ndr_err_code ndr_err;
 572
 573                         if (dhnc) {
 574                                 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 575                                 return tevent_req_post(req, ev);
 576                         }
 577
 578                         sec_desc = talloc_zero(state, struct security_descriptor);
 579                         if (tevent_req_nomem(sec_desc, req)) {
 580                                 return tevent_req_post(req, ev);
 581                         }
 582
 583                         ndr_err = ndr_pull_struct_blob(&secd->data,
 584                                 sec_desc, sec_desc,
 585                                 (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
 586                         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 587                                 DEBUG(2,("ndr_pull_security_descriptor failed: %s\n",
 588                                          ndr_errstr(ndr_err)));
 589                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 590                                 return tevent_req_post(req, ev);
 591                         }
 592                 }
 593
 594                 if (dhnq) {
 595                         if (dhnc) {
 596                                 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 597                                 return tevent_req_post(req, ev);
 598                         }
 599
 600                         if (dhnq->data.length != 16) {
 601                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 602                                 return tevent_req_post(req, ev);
 603                         }
 604                         /*
 605                          * we don't support durable handles yet
 606                          * and have to ignore this
 607                          */
 608                 }
 609
 610                 if (dhnc) {
 611                         if (dhnc->data.length != 16) {
 612                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 613                                 return tevent_req_post(req, ev);
 614                         }
 615                         /* we don't support durable handles yet */
 616                         tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 617                         return tevent_req_post(req, ev);
 618                 }
 619
 620                 if (alsi) {
 621                         if (dhnc) {
 622                                 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 623                                 return tevent_req_post(req, ev);
 624                         }
 625
 626                         if (alsi->data.length != 8) {
 627                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 628                                 return tevent_req_post(req, ev);
 629                         }
 630                         allocation_size = BVAL(alsi->data.data, 0);
 631                 }
 632
 633                 if (twrp) {
 634                         NTTIME nttime;
 635                         time_t t;
 636                         struct tm *tm;
 637
 638                         if (dhnc) {
 639                                 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 640                                 return tevent_req_post(req, ev);
 641                         }
 642
 643                         if (twrp->data.length != 8) {
 644                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 645                                 return tevent_req_post(req, ev);
 646                         }
 647
 648                         nttime = BVAL(twrp->data.data, 0);
 649                         t = nt_time_to_unix(nttime);
 650                         tm = gmtime(&t);
 651
 652                         TALLOC_FREE(fname);
 653                         fname = talloc_asprintf(state,
 654                                         "@GMT-%04u.%02u.%02u-%02u.%02u.%02u\\%s",
 655                                         tm->tm_year + 1900,
 656                                         tm->tm_mon + 1,
 657                                         tm->tm_mday,
 658                                         tm->tm_hour,
 659                                         tm->tm_min,
 660                                         tm->tm_sec,
 661                                         in_name);
 662                         if (tevent_req_nomem(fname, req)) {
 663                                 return tevent_req_post(req, ev);
 664                         }
 665                 }
 666
 667                 if (qfid) {
 668                         if (qfid->data.length != 0) {
 669                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 670                                 return tevent_req_post(req, ev);
 671                         }
 672                 }
 673
 674                 /* these are ignored for SMB2 */
 675                 in_create_options &= ~(0x10);/* NTCREATEX_OPTIONS_SYNC_ALERT */
 676                 in_create_options &= ~(0x20);/* NTCREATEX_OPTIONS_ASYNC_ALERT */
 677
 678                 /*
 679                  * For a DFS path the function parse_dfs_path()
 680                  * will do the path processing.
 681                  */
 682
 683                 if (!(smb1req->flags2 & FLAGS2_DFS_PATHNAMES)) {
 684                         /* convert '\\' into '/' */
 685                         status = check_path_syntax(fname);
 686                         if (!NT_STATUS_IS_OK(status)) {
 687                                 tevent_req_nterror(req, status);
 688                                 return tevent_req_post(req, ev);
 689                         }
 690                 }
 691
 692                 status = filename_convert(req,
 693                                           smb1req->conn,
 694                                           smb1req->flags2 & FLAGS2_DFS_PATHNAMES,
 695                                           fname,
 696                                           0,
 697                                           NULL,
 698                                           &smb_fname);
 699                 if (!NT_STATUS_IS_OK(status)) {
 700                         tevent_req_nterror(req, status);
 701                         return tevent_req_post(req, ev);
 702                 }
 703
 704                 in_file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
 705
 706                 status = SMB_VFS_CREATE_FILE(smb1req->conn,
 707                                              smb1req,
 708                                              0, /* root_dir_fid */
 709                                              smb_fname,
 710                                              in_desired_access,
 711                                              in_share_access,
 712                                              in_create_disposition,
 713                                              in_create_options,
 714                                              in_file_attributes,
 715                                              map_smb2_oplock_levels_to_samba(requested_oplock_level),
 716                                              allocation_size,
 717                                              0, /* private_flags */
 718                                              sec_desc,
 719                                              ea_list,
 720                                              &result,
 721                                              &info);
 722                 if (!NT_STATUS_IS_OK(status)) {
 723                         if (open_was_deferred(smb1req->sconn, smb1req->mid)) {
 724                                 return req;
 725                         }
 726                         tevent_req_nterror(req, status);
 727                         return tevent_req_post(req, ev);
 728                 }
 729
 730                 if (mxac) {
 731                         NTTIME last_write_time;
 732
 733                         unix_timespec_to_nt_time(&last_write_time,
 734                                                  result->fsp_name->st.st_ex_mtime);
 735                         if (last_write_time != max_access_time) {
 736                                 uint8_t p[8];
 737                                 uint32_t max_access_granted;
 738                                 DATA_BLOB blob = data_blob_const(p, sizeof(p));
 739
 740                                 status = smbd_calculate_access_mask(smb1req->conn,
 741                                                         result->fsp_name,
 742                                                         /*
 743                                                          * at this stage
 744                                                          * it exists
 745                                                          */
 746                                                         true,
 747                                                         SEC_FLAG_MAXIMUM_ALLOWED,
 748                                                         &max_access_granted);
 749
 750                                 SIVAL(p, 0, NT_STATUS_V(status));
 751                                 SIVAL(p, 4, max_access_granted);
 752
 753                                 status = smb2_create_blob_add(state,
 754                                                         &out_context_blobs,
 755                                                         SMB2_CREATE_TAG_MXAC,
 756                                                         blob);
 757                                 if (!NT_STATUS_IS_OK(status)) {
 758                                         tevent_req_nterror(req, status);
 759                                         return tevent_req_post(req, ev);
 760                                 }
 761                         }
 762                 }
 763
 764                 if (qfid) {
 765                         uint8_t p[32];
 766                         uint64_t file_index = get_FileIndex(result->conn,
 767                                                         &result->fsp_name->st);
 768                         DATA_BLOB blob = data_blob_const(p, sizeof(p));
 769
 770                         ZERO_STRUCT(p);
 771
 772                         /* From conversations with Microsoft engineers at
 773                            the MS plugfest. The first 8 bytes are the "volume index"
 774                            == inode, the second 8 bytes are the "volume id",
 775                            == dev. This will be updated in the SMB2 doc. */
 776                         SBVAL(p, 0, file_index);
 777                         SIVAL(p, 8, result->fsp_name->st.st_ex_dev);/* FileIndexHigh */
 778
 779                         status = smb2_create_blob_add(state, &out_context_blobs,
 780                                                       SMB2_CREATE_TAG_QFID,
 781                                                       blob);
 782                         if (!NT_STATUS_IS_OK(status)) {
 783                                 tevent_req_nterror(req, status);
 784                                 return tevent_req_post(req, ev);
 785                         }
 786                 }
 787         }
 788
 789         smb2req->compat_chain_fsp = smb1req->chain_fsp;
 790
 791         if(lp_fake_oplocks(SNUM(smb2req->tcon->compat_conn))) {
 792                 state->out_oplock_level = in_oplock_level;
 793         } else {
 794                 state->out_oplock_level = map_samba_oplock_levels_to_smb2(result->oplock_type);
 795         }
 796
 797         if ((in_create_disposition == FILE_SUPERSEDE)
 798             && (info == FILE_WAS_OVERWRITTEN)) {
 799                 state->out_create_action = FILE_WAS_SUPERSEDED;
 800         } else {
 801                 state->out_create_action = info;
 802         }
 803         state->out_file_attributes = dos_mode(result->conn,
 804                                            result->fsp_name);
 805         /* Deal with other possible opens having a modified
 806            write time. JRA. */
 807         ZERO_STRUCT(write_time_ts);
 808         get_file_infos(result->file_id, 0, NULL, &write_time_ts);
 809         if (!null_timespec(write_time_ts)) {
 810                 update_stat_ex_mtime(&result->fsp_name->st, write_time_ts);
 811         }
 812
 813         unix_timespec_to_nt_time(&state->out_creation_time,
 814                         get_create_timespec(smb1req->conn, result,
 815                                         result->fsp_name));
 816         unix_timespec_to_nt_time(&state->out_last_access_time,
 817                         result->fsp_name->st.st_ex_atime);
 818         unix_timespec_to_nt_time(&state->out_last_write_time,
 819                         result->fsp_name->st.st_ex_mtime);
 820         unix_timespec_to_nt_time(&state->out_change_time,
 821                         get_change_timespec(smb1req->conn, result,
 822                                         result->fsp_name));
 823         state->out_allocation_size =
 824                         SMB_VFS_GET_ALLOC_SIZE(smb1req->conn, result,
 825                                                &(result->fsp_name->st));
 826         state->out_end_of_file = result->fsp_name->st.st_ex_size;
 827         if (state->out_file_attributes == 0) {
 828                 state->out_file_attributes = FILE_ATTRIBUTE_NORMAL;
 829         }
 830         state->out_file_id_persistent = result->fnum;
 831         state->out_file_id_volatile = result->fnum;
 832         state->out_context_blobs = out_context_blobs;
 833
 834         tevent_req_done(req);
 835         return tevent_req_post(req, ev);
 836 }
 837
 838 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
 839                         TALLOC_CTX *mem_ctx,
 840                         uint8_t *out_oplock_level,
 841                         uint32_t *out_create_action,
 842                         NTTIME *out_creation_time,
 843                         NTTIME *out_last_access_time,
 844                         NTTIME *out_last_write_time,
 845                         NTTIME *out_change_time,
 846                         uint64_t *out_allocation_size,
 847                         uint64_t *out_end_of_file,
 848                         uint32_t *out_file_attributes,
 849                         uint64_t *out_file_id_persistent,
 850                         uint64_t *out_file_id_volatile,
 851                         struct smb2_create_blobs *out_context_blobs)
 852 {
 853         NTSTATUS status;
 854         struct smbd_smb2_create_state *state = tevent_req_data(req,
 855                                                struct smbd_smb2_create_state);
 856
 857         if (tevent_req_is_nterror(req, &status)) {
 858                 tevent_req_received(req);
 859                 return status;
 860         }
 861
 862         *out_oplock_level       = state->out_oplock_level;
 863         *out_create_action      = state->out_create_action;
 864         *out_creation_time      = state->out_creation_time;
 865         *out_last_access_time   = state->out_last_access_time;
 866         *out_last_write_time    = state->out_last_write_time;
 867         *out_change_time        = state->out_change_time;
 868         *out_allocation_size    = state->out_allocation_size;
 869         *out_end_of_file        = state->out_end_of_file;
 870         *out_file_attributes    = state->out_file_attributes;
 871         *out_file_id_persistent = state->out_file_id_persistent;
 872         *out_file_id_volatile   = state->out_file_id_volatile;
 873         *out_context_blobs      = state->out_context_blobs;
 874
 875         talloc_steal(mem_ctx, state->out_context_blobs.blobs);
 876
 877         tevent_req_received(req);
 878         return NT_STATUS_OK;
 879 }
 880
 881 /*********************************************************
 882  Code for dealing with deferred opens.
 883 *********************************************************/
 884
 885 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
 886                         struct timeval *p_request_time,
 887                         void **pp_state)
 888 {
 889         struct smbd_smb2_create_state *state = NULL;
 890         struct tevent_req *req = NULL;
 891
 892         if (!smb2req) {
 893                 return false;
 894         }
 895         if (!smb2req->async) {
 896                 return false;
 897         }
 898         req = smb2req->subreq;
 899         if (!req) {
 900                 return false;
 901         }
 902         state = tevent_req_data(req, struct smbd_smb2_create_state);
 903         if (!state) {
 904                 return false;
 905         }
 906         if (p_request_time) {
 907                 *p_request_time = state->request_time;
 908         }
 909         if (pp_state) {
 910                 *pp_state = (void *)state->private_data.data;
 911         }
 912         return true;
 913 }
 914
 915 /*********************************************************
 916  Re-process this call early - requested by message or
 917  close.
 918 *********************************************************/
 919
 920 static struct smbd_smb2_request *find_open_smb2req(
 921         struct smbd_server_connection *sconn, uint64_t mid)
 922 {
 923         struct smbd_smb2_request *smb2req;
 924
 925         for (smb2req = sconn->smb2.requests; smb2req; smb2req = smb2req->next) {
 926                 uint64_t message_id;
 927                 if (smb2req->subreq == NULL) {
 928                         /* This message has been processed. */
 929                         continue;
 930                 }
 931                 if (!tevent_req_is_in_progress(smb2req->subreq)) {
 932                         /* This message has been processed. */
 933                         continue;
 934                 }
 935                 message_id = get_mid_from_smb2req(smb2req);
 936                 if (message_id == mid) {
 937                         return smb2req;
 938                 }
 939         }
 940         return NULL;
 941 }
 942
 943 bool open_was_deferred_smb2(struct smbd_server_connection *sconn, uint64_t mid)
 944 {
 945         struct smbd_smb2_create_state *state = NULL;
 946         struct smbd_smb2_request *smb2req;
 947
 948         smb2req = find_open_smb2req(sconn, mid);
 949
 950         if (!smb2req) {
 951                 DEBUG(10,("open_was_deferred_smb2: mid %llu smb2req == NULL\n",
 952                         (unsigned long long)mid));
 953                 return false;
 954         }
 955         if (!smb2req->subreq) {
 956                 return false;
 957         }
 958         if (!tevent_req_is_in_progress(smb2req->subreq)) {
 959                 return false;
 960         }
 961         state = tevent_req_data(smb2req->subreq,
 962                         struct smbd_smb2_create_state);
 963         if (!state) {
 964                 return false;
 965         }
 966         /* It's not in progress if there's no timeout event. */
 967         if (!state->te) {
 968                 return false;
 969         }
 970
 971         DEBUG(10,("open_was_deferred_smb2: mid = %llu\n",
 972                         (unsigned long long)mid));
 973
 974         return true;
 975 }
 976
 977 static void remove_deferred_open_message_smb2_internal(struct smbd_smb2_request *smb2req,
 978                                                         uint64_t mid)
 979 {
 980         struct smbd_smb2_create_state *state = NULL;
 981
 982         if (!smb2req->subreq) {
 983                 return;
 984         }
 985         if (!tevent_req_is_in_progress(smb2req->subreq)) {
 986                 return;
 987         }
 988         state = tevent_req_data(smb2req->subreq,
 989                         struct smbd_smb2_create_state);
 990         if (!state) {
 991                 return;
 992         }
 993
 994         DEBUG(10,("remove_deferred_open_message_smb2_internal: "
 995                 "mid %llu\n",
 996                 (unsigned long long)mid ));
 997
 998         /* Ensure we don't have any outstanding timer event. */
 999         TALLOC_FREE(state->te);
1000         /* Ensure we don't have any outstanding immediate event. */
1001         TALLOC_FREE(state->im);
1002 }
1003
1004 void remove_deferred_open_message_smb2(
1005         struct smbd_server_connection *sconn, uint64_t mid)
1006 {
1007         struct smbd_smb2_request *smb2req;
1008
1009         smb2req = find_open_smb2req(sconn, mid);
1010
1011         if (!smb2req) {
1012                 DEBUG(10,("remove_deferred_open_message_smb2: "
1013                         "can't find mid %llu\n",
1014                         (unsigned long long)mid ));
1015                 return;
1016         }
1017         remove_deferred_open_message_smb2_internal(smb2req, mid);
1018 }
1019
1020 static void smbd_smb2_create_request_dispatch_immediate(struct tevent_context *ctx,
1021                                         struct tevent_immediate *im,
1022                                         void *private_data)
1023 {
1024         struct smbd_smb2_request *smb2req = talloc_get_type_abort(private_data,
1025                                         struct smbd_smb2_request);
1026         struct smbd_server_connection *sconn = smb2req->sconn;
1027         uint64_t mid = get_mid_from_smb2req(smb2req);
1028         NTSTATUS status;
1029
1030         DEBUG(10,("smbd_smb2_create_request_dispatch_immediate: "
1031                 "re-dispatching mid %llu\n",
1032                 (unsigned long long)mid ));
1033
1034         status = smbd_smb2_request_dispatch(smb2req);
1035         if (!NT_STATUS_IS_OK(status)) {
1036                 smbd_server_connection_terminate(sconn, nt_errstr(status));
1037                 return;
1038         }
1039 }
1040
1041 void schedule_deferred_open_message_smb2(
1042         struct smbd_server_connection *sconn, uint64_t mid)
1043 {
1044         struct smbd_smb2_create_state *state = NULL;
1045         struct smbd_smb2_request *smb2req;
1046
1047         smb2req = find_open_smb2req(sconn, mid);
1048
1049         if (!smb2req) {
1050                 DEBUG(10,("schedule_deferred_open_message_smb2: "
1051                         "can't find mid %llu\n",
1052                         (unsigned long long)mid ));
1053                 return;
1054         }
1055         if (!smb2req->subreq) {
1056                 return;
1057         }
1058         if (!tevent_req_is_in_progress(smb2req->subreq)) {
1059                 return;
1060         }
1061         state = tevent_req_data(smb2req->subreq,
1062                         struct smbd_smb2_create_state);
1063         if (!state) {
1064                 return;
1065         }
1066
1067         /* Ensure we don't have any outstanding timer event. */
1068         TALLOC_FREE(state->te);
1069         /* Ensure we don't have any outstanding immediate event. */
1070         TALLOC_FREE(state->im);
1071
1072         /*
1073          * This is subtle. We must null out the callback
1074          * before resheduling, else the first call to
1075          * tevent_req_nterror() causes the _receive()
1076          * function to be called, this causing tevent_req_post()
1077          * to crash.
1078          */
1079         tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1080
1081         state->im = tevent_create_immediate(smb2req);
1082         if (!state->im) {
1083                 smbd_server_connection_terminate(smb2req->sconn,
1084                         nt_errstr(NT_STATUS_NO_MEMORY));
1085                 return;
1086         }
1087
1088         DEBUG(10,("schedule_deferred_open_message_smb2: "
1089                 "re-processing mid %llu\n",
1090                 (unsigned long long)mid ));
1091
1092         tevent_schedule_immediate(state->im,
1093                         smb2req->sconn->smb2.event_ctx,
1094                         smbd_smb2_create_request_dispatch_immediate,
1095                         smb2req);
1096 }
1097
1098 /*********************************************************
1099  Re-process this call.
1100 *********************************************************/
1101
1102 static void smb2_deferred_open_timer(struct event_context *ev,
1103                                         struct timed_event *te,
1104                                         struct timeval _tval,
1105                                         void *private_data)
1106 {
1107         NTSTATUS status;
1108         struct smbd_smb2_create_state *state = NULL;
1109         struct smbd_smb2_request *smb2req = talloc_get_type(private_data,
1110                                                 struct smbd_smb2_request);
1111
1112         DEBUG(10,("smb2_deferred_open_timer: [idx=%d], %s\n",
1113                 smb2req->current_idx,
1114                 tevent_req_default_print(smb2req->subreq, talloc_tos()) ));
1115
1116         state = tevent_req_data(smb2req->subreq,
1117                         struct smbd_smb2_create_state);
1118         if (!state) {
1119                 return;
1120         }
1121         /*
1122          * Null this out, don't talloc_free. It will
1123          * be talloc_free'd by the tevent library when
1124          * this returns.
1125          */
1126         state->te = NULL;
1127         /* Ensure we don't have any outstanding immediate event. */
1128         TALLOC_FREE(state->im);
1129
1130         /*
1131          * This is subtle. We must null out the callback
1132          * before resheduling, else the first call to
1133          * tevent_req_nterror() causes the _receive()
1134          * function to be called, this causing tevent_req_post()
1135          * to crash.
1136          */
1137         tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1138
1139         status = smbd_smb2_request_dispatch(smb2req);
1140
1141         if (!NT_STATUS_IS_OK(status)) {
1142                 smbd_server_connection_terminate(smb2req->sconn,
1143                                 nt_errstr(status));
1144         }
1145 }
1146
1147 static bool smbd_smb2_create_cancel(struct tevent_req *req)
1148 {
1149         struct smbd_smb2_request *smb2req = NULL;
1150         struct smbd_smb2_create_state *state = tevent_req_data(req,
1151                                 struct smbd_smb2_create_state);
1152         uint64_t mid;
1153
1154         if (!state) {
1155                 return false;
1156         }
1157
1158         if (!state->smb2req) {
1159                 return false;
1160         }
1161
1162         smb2req = state->smb2req;
1163         mid = get_mid_from_smb2req(smb2req);
1164
1165         remove_deferred_open_entry(state->id, mid,
1166                                    sconn_server_id(smb2req->sconn));
1167         remove_deferred_open_message_smb2_internal(smb2req, mid);
1168         smb2req->cancelled = true;
1169
1170         tevent_req_done(req);
1171         return true;
1172 }
1173
1174 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
1175                                 struct timeval request_time,
1176                                 struct timeval timeout,
1177                                 struct file_id id,
1178                                 char *private_data,
1179                                 size_t priv_len)
1180 {
1181         struct tevent_req *req = NULL;
1182         struct smbd_smb2_create_state *state = NULL;
1183         struct timeval end_time;
1184
1185         if (!smb2req) {
1186                 return false;
1187         }
1188         req = smb2req->subreq;
1189         if (!req) {
1190                 return false;
1191         }
1192         state = tevent_req_data(req, struct smbd_smb2_create_state);
1193         if (!state) {
1194                 return false;
1195         }
1196         state->id = id;
1197         state->request_time = request_time;
1198         state->private_data = data_blob_talloc(state, private_data,
1199                                                 priv_len);
1200         if (!state->private_data.data) {
1201                 return false;
1202         }
1203
1204 #if 1
1205         /* Boo - turns out this isn't what W2K8R2
1206            does. It actually sends the STATUS_PENDING
1207            message followed by the STATUS_SHARING_VIOLATION
1208            message. Surely this means that all open
1209            calls (even on directories) will potentially
1210            fail in a chain.... ? And I've seen directory
1211            opens as the start of a chain. JRA.
1212
1213            Update: 19th May 2010. Talking with Microsoft
1214            engineers at the plugfest this is a bug in
1215            Windows. Re-enable this code.
1216         */
1217         /*
1218          * More subtlety. To match W2K8R2 don't
1219          * send a "gone async" message if it's simply
1220          * a STATUS_SHARING_VIOLATION (short) wait, not
1221          * an oplock break wait. We do this by prematurely
1222          * setting smb2req->async flag.
1223          */
1224         if (timeout.tv_sec < 2) {
1225                 DEBUG(10,("push_deferred_open_message_smb2: "
1226                         "short timer wait (usec = %u). "
1227                         "Don't send async message.\n",
1228                         (unsigned int)timeout.tv_usec ));
1229                 smb2req->async = true;
1230         }
1231 #endif
1232
1233         /* Re-schedule us to retry on timer expiry. */
1234         end_time = timeval_sum(&request_time, &timeout);
1235
1236         DEBUG(10,("push_deferred_open_message_smb2: "
1237                 "timeout at %s\n",
1238                 timeval_string(talloc_tos(),
1239                                 &end_time,
1240                                 true) ));
1241
1242         state->te = event_add_timed(smb2req->sconn->smb2.event_ctx,
1243                                 state,
1244                                 end_time,
1245                                 smb2_deferred_open_timer,
1246                                 smb2req);
1247         if (!state->te) {
1248                 return false;
1249         }
1250
1251         /* allow this request to be canceled */
1252         tevent_req_set_cancel_fn(req, smbd_smb2_create_cancel);
1253
1254         return true;
1255 }