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, false);
 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         bool open_was_deferred;
 390         struct timed_event *te;
 391         struct tevent_immediate *im;
 392         struct timeval request_time;
 393         struct file_id id;
 394         DATA_BLOB private_data;
 395         uint8_t out_oplock_level;
 396         uint32_t out_create_action;
 397         NTTIME out_creation_time;
 398         NTTIME out_last_access_time;
 399         NTTIME out_last_write_time;
 400         NTTIME out_change_time;
 401         uint64_t out_allocation_size;
 402         uint64_t out_end_of_file;
 403         uint32_t out_file_attributes;
 404         uint64_t out_file_id_persistent;
 405         uint64_t out_file_id_volatile;
 406         struct smb2_create_blobs out_context_blobs;
 407 };
 408
 409 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
 410                         struct tevent_context *ev,
 411                         struct smbd_smb2_request *smb2req,
 412                         uint8_t in_oplock_level,
 413                         uint32_t in_impersonation_level,
 414                         uint32_t in_desired_access,
 415                         uint32_t in_file_attributes,
 416                         uint32_t in_share_access,
 417                         uint32_t in_create_disposition,
 418                         uint32_t in_create_options,
 419                         const char *in_name,
 420                         struct smb2_create_blobs in_context_blobs)
 421 {
 422         struct tevent_req *req = NULL;
 423         struct smbd_smb2_create_state *state = NULL;
 424         NTSTATUS status;
 425         struct smb_request *smb1req = NULL;
 426         files_struct *result = NULL;
 427         int info;
 428         struct timespec write_time_ts;
 429         struct smb2_create_blobs out_context_blobs;
 430         int requested_oplock_level;
 431
 432         ZERO_STRUCT(out_context_blobs);
 433
 434         if(lp_fake_oplocks(SNUM(smb2req->tcon->compat_conn))) {
 435                 requested_oplock_level = SMB2_OPLOCK_LEVEL_NONE;
 436         } else {
 437                 requested_oplock_level = in_oplock_level;
 438         }
 439
 440
 441         if (!smb2req->async) {
 442                 /* New create call. */
 443                 req = tevent_req_create(mem_ctx, &state,
 444                                 struct smbd_smb2_create_state);
 445                 if (req == NULL) {
 446                         return NULL;
 447                 }
 448                 state->smb2req = smb2req;
 449                 smb2req->subreq = req; /* So we can find this when going async. */
 450
 451                 smb1req = smbd_smb2_fake_smb_request(smb2req);
 452                 if (tevent_req_nomem(smb1req, req)) {
 453                         return tevent_req_post(req, ev);
 454                 }
 455                 state->smb1req = smb1req;
 456                 DEBUG(10,("smbd_smb2_create: name[%s]\n",
 457                         in_name));
 458         } else {
 459                 /* Re-entrant create call. */
 460                 req = smb2req->subreq;
 461                 state = tevent_req_data(req,
 462                                 struct smbd_smb2_create_state);
 463                 smb1req = state->smb1req;
 464                 DEBUG(10,("smbd_smb2_create_send: reentrant for file %s\n",
 465                         in_name ));
 466         }
 467
 468         if (IS_IPC(smb1req->conn)) {
 469                 const char *pipe_name = in_name;
 470
 471                 if (!lp_nt_pipe_support()) {
 472                         tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
 473                         return tevent_req_post(req, ev);
 474                 }
 475
 476                 /* Strip \\ off the name. */
 477                 if (pipe_name[0] == '\\') {
 478                         pipe_name++;
 479                 }
 480
 481                 status = open_np_file(smb1req, pipe_name, &result);
 482                 if (!NT_STATUS_IS_OK(status)) {
 483                         tevent_req_nterror(req, status);
 484                         return tevent_req_post(req, ev);
 485                 }
 486                 info = FILE_WAS_OPENED;
 487         } else if (CAN_PRINT(smb1req->conn)) {
 488                 status = file_new(smb1req, smb1req->conn, &result);
 489                 if(!NT_STATUS_IS_OK(status)) {
 490                         tevent_req_nterror(req, status);
 491                         return tevent_req_post(req, ev);
 492                 }
 493
 494                 status = print_spool_open(result, in_name,
 495                                           smb1req->vuid);
 496                 if (!NT_STATUS_IS_OK(status)) {
 497                         file_free(smb1req, result);
 498                         tevent_req_nterror(req, status);
 499                         return tevent_req_post(req, ev);
 500                 }
 501                 info = FILE_WAS_CREATED;
 502         } else {
 503                 char *fname;
 504                 struct smb_filename *smb_fname = NULL;
 505                 struct smb2_create_blob *exta = NULL;
 506                 struct ea_list *ea_list = NULL;
 507                 struct smb2_create_blob *mxac = NULL;
 508                 NTTIME max_access_time = 0;
 509                 struct smb2_create_blob *secd = NULL;
 510                 struct security_descriptor *sec_desc = NULL;
 511                 struct smb2_create_blob *dhnq = NULL;
 512                 struct smb2_create_blob *dhnc = NULL;
 513                 struct smb2_create_blob *alsi = NULL;
 514                 uint64_t allocation_size = 0;
 515                 struct smb2_create_blob *twrp = NULL;
 516                 struct smb2_create_blob *qfid = NULL;
 517
 518                 exta = smb2_create_blob_find(&in_context_blobs,
 519                                              SMB2_CREATE_TAG_EXTA);
 520                 mxac = smb2_create_blob_find(&in_context_blobs,
 521                                              SMB2_CREATE_TAG_MXAC);
 522                 secd = smb2_create_blob_find(&in_context_blobs,
 523                                              SMB2_CREATE_TAG_SECD);
 524                 dhnq = smb2_create_blob_find(&in_context_blobs,
 525                                              SMB2_CREATE_TAG_DHNQ);
 526                 dhnc = smb2_create_blob_find(&in_context_blobs,
 527                                              SMB2_CREATE_TAG_DHNC);
 528                 alsi = smb2_create_blob_find(&in_context_blobs,
 529                                              SMB2_CREATE_TAG_ALSI);
 530                 twrp = smb2_create_blob_find(&in_context_blobs,
 531                                              SMB2_CREATE_TAG_TWRP);
 532                 qfid = smb2_create_blob_find(&in_context_blobs,
 533                                              SMB2_CREATE_TAG_QFID);
 534
 535                 fname = talloc_strdup(state, in_name);
 536                 if (tevent_req_nomem(fname, req)) {
 537                         return tevent_req_post(req, ev);
 538                 }
 539
 540                 if (exta) {
 541                         if (dhnc) {
 542                                 tevent_req_nterror(req,NT_STATUS_OBJECT_NAME_NOT_FOUND);
 543                                 return tevent_req_post(req, ev);
 544                         }
 545
 546                         ea_list = read_nttrans_ea_list(mem_ctx,
 547                                 (const char *)exta->data.data, exta->data.length);
 548                         if (!ea_list) {
 549                                 DEBUG(10,("smbd_smb2_create_send: read_ea_name_list failed.\n"));
 550                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 551                                 return tevent_req_post(req, ev);
 552                         }
 553                 }
 554
 555                 if (mxac) {
 556                         if (dhnc) {
 557                                 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 558                                 return tevent_req_post(req, ev);
 559                         }
 560
 561                         if (mxac->data.length == 0) {
 562                                 max_access_time = 0;
 563                         } else if (mxac->data.length == 8) {
 564                                 max_access_time = BVAL(mxac->data.data, 0);
 565                         } else {
 566                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 567                                 return tevent_req_post(req, ev);
 568                         }
 569                 }
 570
 571                 if (secd) {
 572                         enum ndr_err_code ndr_err;
 573
 574                         if (dhnc) {
 575                                 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 576                                 return tevent_req_post(req, ev);
 577                         }
 578
 579                         sec_desc = talloc_zero(state, struct security_descriptor);
 580                         if (tevent_req_nomem(sec_desc, req)) {
 581                                 return tevent_req_post(req, ev);
 582                         }
 583
 584                         ndr_err = ndr_pull_struct_blob(&secd->data,
 585                                 sec_desc, sec_desc,
 586                                 (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
 587                         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 588                                 DEBUG(2,("ndr_pull_security_descriptor failed: %s\n",
 589                                          ndr_errstr(ndr_err)));
 590                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 591                                 return tevent_req_post(req, ev);
 592                         }
 593                 }
 594
 595                 if (dhnq) {
 596                         if (dhnc) {
 597                                 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 598                                 return tevent_req_post(req, ev);
 599                         }
 600
 601                         if (dhnq->data.length != 16) {
 602                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 603                                 return tevent_req_post(req, ev);
 604                         }
 605                         /*
 606                          * we don't support durable handles yet
 607                          * and have to ignore this
 608                          */
 609                 }
 610
 611                 if (dhnc) {
 612                         if (dhnc->data.length != 16) {
 613                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 614                                 return tevent_req_post(req, ev);
 615                         }
 616                         /* we don't support durable handles yet */
 617                         tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 618                         return tevent_req_post(req, ev);
 619                 }
 620
 621                 if (alsi) {
 622                         if (dhnc) {
 623                                 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 624                                 return tevent_req_post(req, ev);
 625                         }
 626
 627                         if (alsi->data.length != 8) {
 628                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 629                                 return tevent_req_post(req, ev);
 630                         }
 631                         allocation_size = BVAL(alsi->data.data, 0);
 632                 }
 633
 634                 if (twrp) {
 635                         NTTIME nttime;
 636                         time_t t;
 637                         struct tm *tm;
 638
 639                         if (dhnc) {
 640                                 tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 641                                 return tevent_req_post(req, ev);
 642                         }
 643
 644                         if (twrp->data.length != 8) {
 645                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 646                                 return tevent_req_post(req, ev);
 647                         }
 648
 649                         nttime = BVAL(twrp->data.data, 0);
 650                         t = nt_time_to_unix(nttime);
 651                         tm = gmtime(&t);
 652
 653                         TALLOC_FREE(fname);
 654                         fname = talloc_asprintf(state,
 655                                         "@GMT-%04u.%02u.%02u-%02u.%02u.%02u\\%s",
 656                                         tm->tm_year + 1900,
 657                                         tm->tm_mon + 1,
 658                                         tm->tm_mday,
 659                                         tm->tm_hour,
 660                                         tm->tm_min,
 661                                         tm->tm_sec,
 662                                         in_name);
 663                         if (tevent_req_nomem(fname, req)) {
 664                                 return tevent_req_post(req, ev);
 665                         }
 666                 }
 667
 668                 if (qfid) {
 669                         if (qfid->data.length != 0) {
 670                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 671                                 return tevent_req_post(req, ev);
 672                         }
 673                 }
 674
 675                 /* these are ignored for SMB2 */
 676                 in_create_options &= ~(0x10);/* NTCREATEX_OPTIONS_SYNC_ALERT */
 677                 in_create_options &= ~(0x20);/* NTCREATEX_OPTIONS_ASYNC_ALERT */
 678
 679                 /*
 680                  * For a DFS path the function parse_dfs_path()
 681                  * will do the path processing.
 682                  */
 683
 684                 if (!(smb1req->flags2 & FLAGS2_DFS_PATHNAMES)) {
 685                         /* convert '\\' into '/' */
 686                         status = check_path_syntax(fname);
 687                         if (!NT_STATUS_IS_OK(status)) {
 688                                 tevent_req_nterror(req, status);
 689                                 return tevent_req_post(req, ev);
 690                         }
 691                 }
 692
 693                 status = filename_convert(req,
 694                                           smb1req->conn,
 695                                           smb1req->flags2 & FLAGS2_DFS_PATHNAMES,
 696                                           fname,
 697                                           (in_create_disposition == FILE_CREATE) ?
 698                                                 UCF_CREATING_FILE : 0,
 699                                           NULL,
 700                                           &smb_fname);
 701                 if (!NT_STATUS_IS_OK(status)) {
 702                         tevent_req_nterror(req, status);
 703                         return tevent_req_post(req, ev);
 704                 }
 705
 706                 in_file_attributes &= ~FILE_FLAG_POSIX_SEMANTICS;
 707
 708                 status = SMB_VFS_CREATE_FILE(smb1req->conn,
 709                                              smb1req,
 710                                              0, /* root_dir_fid */
 711                                              smb_fname,
 712                                              in_desired_access,
 713                                              in_share_access,
 714                                              in_create_disposition,
 715                                              in_create_options,
 716                                              in_file_attributes,
 717                                              map_smb2_oplock_levels_to_samba(requested_oplock_level),
 718                                              allocation_size,
 719                                              0, /* private_flags */
 720                                              sec_desc,
 721                                              ea_list,
 722                                              &result,
 723                                              &info);
 724                 if (!NT_STATUS_IS_OK(status)) {
 725                         if (open_was_deferred(smb1req->mid)) {
 726                                 return req;
 727                         }
 728                         tevent_req_nterror(req, status);
 729                         return tevent_req_post(req, ev);
 730                 }
 731
 732                 if (mxac) {
 733                         NTTIME last_write_time;
 734
 735                         unix_timespec_to_nt_time(&last_write_time,
 736                                                  result->fsp_name->st.st_ex_mtime);
 737                         if (last_write_time != max_access_time) {
 738                                 uint8_t p[8];
 739                                 uint32_t max_access_granted;
 740                                 DATA_BLOB blob = data_blob_const(p, sizeof(p));
 741
 742                                 status = smbd_calculate_access_mask(smb1req->conn,
 743                                                         result->fsp_name,
 744                                                         /*
 745                                                          * at this stage
 746                                                          * it exists
 747                                                          */
 748                                                         true,
 749                                                         SEC_FLAG_MAXIMUM_ALLOWED,
 750                                                         &max_access_granted);
 751
 752                                 SIVAL(p, 0, NT_STATUS_V(status));
 753                                 SIVAL(p, 4, max_access_granted);
 754
 755                                 status = smb2_create_blob_add(state,
 756                                                         &out_context_blobs,
 757                                                         SMB2_CREATE_TAG_MXAC,
 758                                                         blob);
 759                                 if (!NT_STATUS_IS_OK(status)) {
 760                                         tevent_req_nterror(req, status);
 761                                         return tevent_req_post(req, ev);
 762                                 }
 763                         }
 764                 }
 765
 766                 if (qfid) {
 767                         uint8_t p[32];
 768                         uint64_t file_index = get_FileIndex(result->conn,
 769                                                         &result->fsp_name->st);
 770                         DATA_BLOB blob = data_blob_const(p, sizeof(p));
 771
 772                         ZERO_STRUCT(p);
 773
 774                         /* From conversations with Microsoft engineers at
 775                            the MS plugfest. The first 8 bytes are the "volume index"
 776                            == inode, the second 8 bytes are the "volume id",
 777                            == dev. This will be updated in the SMB2 doc. */
 778                         SBVAL(p, 0, file_index);
 779                         SIVAL(p, 8, result->fsp_name->st.st_ex_dev);/* FileIndexHigh */
 780
 781                         status = smb2_create_blob_add(state, &out_context_blobs,
 782                                                       SMB2_CREATE_TAG_QFID,
 783                                                       blob);
 784                         if (!NT_STATUS_IS_OK(status)) {
 785                                 tevent_req_nterror(req, status);
 786                                 return tevent_req_post(req, ev);
 787                         }
 788                 }
 789         }
 790
 791         smb2req->compat_chain_fsp = smb1req->chain_fsp;
 792
 793         if(lp_fake_oplocks(SNUM(smb2req->tcon->compat_conn))) {
 794                 state->out_oplock_level = in_oplock_level;
 795         } else {
 796                 state->out_oplock_level = map_samba_oplock_levels_to_smb2(result->oplock_type);
 797         }
 798
 799         if ((in_create_disposition == FILE_SUPERSEDE)
 800             && (info == FILE_WAS_OVERWRITTEN)) {
 801                 state->out_create_action = FILE_WAS_SUPERSEDED;
 802         } else {
 803                 state->out_create_action = info;
 804         }
 805         state->out_file_attributes = dos_mode(result->conn,
 806                                            result->fsp_name);
 807         /* Deal with other possible opens having a modified
 808            write time. JRA. */
 809         ZERO_STRUCT(write_time_ts);
 810         get_file_infos(result->file_id, 0, NULL, &write_time_ts);
 811         if (!null_timespec(write_time_ts)) {
 812                 update_stat_ex_mtime(&result->fsp_name->st, write_time_ts);
 813         }
 814
 815         unix_timespec_to_nt_time(&state->out_creation_time,
 816                         get_create_timespec(smb1req->conn, result,
 817                                         result->fsp_name));
 818         unix_timespec_to_nt_time(&state->out_last_access_time,
 819                         result->fsp_name->st.st_ex_atime);
 820         unix_timespec_to_nt_time(&state->out_last_write_time,
 821                         result->fsp_name->st.st_ex_mtime);
 822         unix_timespec_to_nt_time(&state->out_change_time,
 823                         get_change_timespec(smb1req->conn, result,
 824                                         result->fsp_name));
 825         state->out_allocation_size =
 826                         SMB_VFS_GET_ALLOC_SIZE(smb1req->conn, result,
 827                                                &(result->fsp_name->st));
 828         state->out_end_of_file = result->fsp_name->st.st_ex_size;
 829         if (state->out_file_attributes == 0) {
 830                 state->out_file_attributes = FILE_ATTRIBUTE_NORMAL;
 831         }
 832         state->out_file_id_persistent = fsp_persistent_id(result);
 833         state->out_file_id_volatile = result->fnum;
 834         state->out_context_blobs = out_context_blobs;
 835
 836         tevent_req_done(req);
 837         return tevent_req_post(req, ev);
 838 }
 839
 840 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
 841                         TALLOC_CTX *mem_ctx,
 842                         uint8_t *out_oplock_level,
 843                         uint32_t *out_create_action,
 844                         NTTIME *out_creation_time,
 845                         NTTIME *out_last_access_time,
 846                         NTTIME *out_last_write_time,
 847                         NTTIME *out_change_time,
 848                         uint64_t *out_allocation_size,
 849                         uint64_t *out_end_of_file,
 850                         uint32_t *out_file_attributes,
 851                         uint64_t *out_file_id_persistent,
 852                         uint64_t *out_file_id_volatile,
 853                         struct smb2_create_blobs *out_context_blobs)
 854 {
 855         NTSTATUS status;
 856         struct smbd_smb2_create_state *state = tevent_req_data(req,
 857                                                struct smbd_smb2_create_state);
 858
 859         if (tevent_req_is_nterror(req, &status)) {
 860                 tevent_req_received(req);
 861                 return status;
 862         }
 863
 864         *out_oplock_level       = state->out_oplock_level;
 865         *out_create_action      = state->out_create_action;
 866         *out_creation_time      = state->out_creation_time;
 867         *out_last_access_time   = state->out_last_access_time;
 868         *out_last_write_time    = state->out_last_write_time;
 869         *out_change_time        = state->out_change_time;
 870         *out_allocation_size    = state->out_allocation_size;
 871         *out_end_of_file        = state->out_end_of_file;
 872         *out_file_attributes    = state->out_file_attributes;
 873         *out_file_id_persistent = state->out_file_id_persistent;
 874         *out_file_id_volatile   = state->out_file_id_volatile;
 875         *out_context_blobs      = state->out_context_blobs;
 876
 877         talloc_steal(mem_ctx, state->out_context_blobs.blobs);
 878
 879         tevent_req_received(req);
 880         return NT_STATUS_OK;
 881 }
 882
 883 /*********************************************************
 884  Code for dealing with deferred opens.
 885 *********************************************************/
 886
 887 bool get_deferred_open_message_state_smb2(struct smbd_smb2_request *smb2req,
 888                         struct timeval *p_request_time,
 889                         void **pp_state)
 890 {
 891         struct smbd_smb2_create_state *state = NULL;
 892         struct tevent_req *req = NULL;
 893
 894         if (!smb2req) {
 895                 return false;
 896         }
 897         req = smb2req->subreq;
 898         if (!req) {
 899                 return false;
 900         }
 901         state = tevent_req_data(req, struct smbd_smb2_create_state);
 902         if (!state) {
 903                 return false;
 904         }
 905         if (!state->open_was_deferred) {
 906                 return false;
 907         }
 908         if (p_request_time) {
 909                 *p_request_time = state->request_time;
 910         }
 911         if (pp_state) {
 912                 *pp_state = (void *)state->private_data.data;
 913         }
 914         return true;
 915 }
 916
 917 /*********************************************************
 918  Re-process this call early - requested by message or
 919  close.
 920 *********************************************************/
 921
 922 static struct smbd_smb2_request *find_open_smb2req(
 923         struct smbd_server_connection *sconn, uint64_t mid)
 924 {
 925         struct smbd_smb2_request *smb2req;
 926
 927         for (smb2req = sconn->smb2.requests; smb2req; smb2req = smb2req->next) {
 928                 uint64_t message_id;
 929                 if (smb2req->subreq == NULL) {
 930                         /* This message has been processed. */
 931                         continue;
 932                 }
 933                 if (!tevent_req_is_in_progress(smb2req->subreq)) {
 934                         /* This message has been processed. */
 935                         continue;
 936                 }
 937                 message_id = get_mid_from_smb2req(smb2req);
 938                 if (message_id == mid) {
 939                         return smb2req;
 940                 }
 941         }
 942         return NULL;
 943 }
 944
 945 bool open_was_deferred_smb2(struct smbd_server_connection *sconn, uint64_t mid)
 946 {
 947         struct smbd_smb2_create_state *state = NULL;
 948         struct smbd_smb2_request *smb2req;
 949
 950         smb2req = find_open_smb2req(sconn, mid);
 951
 952         if (!smb2req) {
 953                 DEBUG(10,("open_was_deferred_smb2: mid %llu smb2req == NULL\n",
 954                         (unsigned long long)mid));
 955                 return false;
 956         }
 957         if (!smb2req->subreq) {
 958                 return false;
 959         }
 960         if (!tevent_req_is_in_progress(smb2req->subreq)) {
 961                 return false;
 962         }
 963         state = tevent_req_data(smb2req->subreq,
 964                         struct smbd_smb2_create_state);
 965         if (!state) {
 966                 return false;
 967         }
 968         /* It's not in progress if there's no timeout event. */
 969         if (!state->open_was_deferred) {
 970                 return false;
 971         }
 972
 973         DEBUG(10,("open_was_deferred_smb2: mid = %llu\n",
 974                         (unsigned long long)mid));
 975
 976         return true;
 977 }
 978
 979 static void remove_deferred_open_message_smb2_internal(struct smbd_smb2_request *smb2req,
 980                                                         uint64_t mid)
 981 {
 982         struct smbd_smb2_create_state *state = NULL;
 983
 984         if (!smb2req->subreq) {
 985                 return;
 986         }
 987         if (!tevent_req_is_in_progress(smb2req->subreq)) {
 988                 return;
 989         }
 990         state = tevent_req_data(smb2req->subreq,
 991                         struct smbd_smb2_create_state);
 992         if (!state) {
 993                 return;
 994         }
 995
 996         DEBUG(10,("remove_deferred_open_message_smb2_internal: "
 997                 "mid %llu\n",
 998                 (unsigned long long)mid ));
 999
1000         state->open_was_deferred = false;
1001         /* Ensure we don't have any outstanding timer event. */
1002         TALLOC_FREE(state->te);
1003         /* Ensure we don't have any outstanding immediate event. */
1004         TALLOC_FREE(state->im);
1005 }
1006
1007 void remove_deferred_open_message_smb2(
1008         struct smbd_server_connection *sconn, uint64_t mid)
1009 {
1010         struct smbd_smb2_request *smb2req;
1011
1012         smb2req = find_open_smb2req(sconn, mid);
1013
1014         if (!smb2req) {
1015                 DEBUG(10,("remove_deferred_open_message_smb2: "
1016                         "can't find mid %llu\n",
1017                         (unsigned long long)mid ));
1018                 return;
1019         }
1020         remove_deferred_open_message_smb2_internal(smb2req, mid);
1021 }
1022
1023 static void smbd_smb2_create_request_dispatch_immediate(struct tevent_context *ctx,
1024                                         struct tevent_immediate *im,
1025                                         void *private_data)
1026 {
1027         struct smbd_smb2_request *smb2req = talloc_get_type_abort(private_data,
1028                                         struct smbd_smb2_request);
1029         struct smbd_server_connection *sconn = smb2req->sconn;
1030         uint64_t mid = get_mid_from_smb2req(smb2req);
1031         NTSTATUS status;
1032
1033         DEBUG(10,("smbd_smb2_create_request_dispatch_immediate: "
1034                 "re-dispatching mid %llu\n",
1035                 (unsigned long long)mid ));
1036
1037         status = smbd_smb2_request_dispatch(smb2req);
1038         if (!NT_STATUS_IS_OK(status)) {
1039                 smbd_server_connection_terminate(sconn, nt_errstr(status));
1040                 return;
1041         }
1042 }
1043
1044 void schedule_deferred_open_message_smb2(
1045         struct smbd_server_connection *sconn, uint64_t mid)
1046 {
1047         struct smbd_smb2_create_state *state = NULL;
1048         struct smbd_smb2_request *smb2req;
1049
1050         smb2req = find_open_smb2req(sconn, mid);
1051
1052         if (!smb2req) {
1053                 DEBUG(10,("schedule_deferred_open_message_smb2: "
1054                         "can't find mid %llu\n",
1055                         (unsigned long long)mid ));
1056                 return;
1057         }
1058         if (!smb2req->subreq) {
1059                 return;
1060         }
1061         if (!tevent_req_is_in_progress(smb2req->subreq)) {
1062                 return;
1063         }
1064         state = tevent_req_data(smb2req->subreq,
1065                         struct smbd_smb2_create_state);
1066         if (!state) {
1067                 return;
1068         }
1069
1070         /* Ensure we don't have any outstanding timer event. */
1071         TALLOC_FREE(state->te);
1072         /* Ensure we don't have any outstanding immediate event. */
1073         TALLOC_FREE(state->im);
1074
1075         /*
1076          * This is subtle. We must null out the callback
1077          * before resheduling, else the first call to
1078          * tevent_req_nterror() causes the _receive()
1079          * function to be called, this causing tevent_req_post()
1080          * to crash.
1081          */
1082         tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1083
1084         state->im = tevent_create_immediate(smb2req);
1085         if (!state->im) {
1086                 smbd_server_connection_terminate(smb2req->sconn,
1087                         nt_errstr(NT_STATUS_NO_MEMORY));
1088         }
1089
1090         DEBUG(10,("schedule_deferred_open_message_smb2: "
1091                 "re-processing mid %llu\n",
1092                 (unsigned long long)mid ));
1093
1094         tevent_schedule_immediate(state->im,
1095                         smb2req->sconn->smb2.event_ctx,
1096                         smbd_smb2_create_request_dispatch_immediate,
1097                         smb2req);
1098 }
1099
1100 /*********************************************************
1101  Re-process this call.
1102 *********************************************************/
1103
1104 static void smb2_deferred_open_timer(struct event_context *ev,
1105                                         struct timed_event *te,
1106                                         struct timeval _tval,
1107                                         void *private_data)
1108 {
1109         NTSTATUS status;
1110         struct smbd_smb2_create_state *state = NULL;
1111         struct smbd_smb2_request *smb2req = talloc_get_type(private_data,
1112                                                 struct smbd_smb2_request);
1113
1114         DEBUG(10,("smb2_deferred_open_timer: [idx=%d], %s\n",
1115                 smb2req->current_idx,
1116                 tevent_req_default_print(smb2req->subreq, talloc_tos()) ));
1117
1118         state = tevent_req_data(smb2req->subreq,
1119                         struct smbd_smb2_create_state);
1120         if (!state) {
1121                 return;
1122         }
1123         /*
1124          * Null this out, don't talloc_free. It will
1125          * be talloc_free'd by the tevent library when
1126          * this returns.
1127          */
1128         state->te = NULL;
1129         /* Ensure we don't have any outstanding immediate event. */
1130         TALLOC_FREE(state->im);
1131
1132         /*
1133          * This is subtle. We must null out the callback
1134          * before resheduling, else the first call to
1135          * tevent_req_nterror() causes the _receive()
1136          * function to be called, this causing tevent_req_post()
1137          * to crash.
1138          */
1139         tevent_req_set_callback(smb2req->subreq, NULL, NULL);
1140
1141         status = smbd_smb2_request_dispatch(smb2req);
1142
1143         if (!NT_STATUS_IS_OK(status)) {
1144                 smbd_server_connection_terminate(smb2req->sconn,
1145                                 nt_errstr(status));
1146         }
1147 }
1148
1149 static bool smbd_smb2_create_cancel(struct tevent_req *req)
1150 {
1151         struct smbd_smb2_request *smb2req = NULL;
1152         struct smbd_smb2_create_state *state = tevent_req_data(req,
1153                                 struct smbd_smb2_create_state);
1154         uint64_t mid;
1155
1156         if (!state) {
1157                 return false;
1158         }
1159
1160         if (!state->smb2req) {
1161                 return false;
1162         }
1163
1164         smb2req = state->smb2req;
1165         mid = get_mid_from_smb2req(smb2req);
1166
1167         remove_deferred_open_entry(state->id, mid,
1168                                    sconn_server_id(smb2req->sconn));
1169         remove_deferred_open_message_smb2_internal(smb2req, mid);
1170         smb2req->cancelled = true;
1171
1172         tevent_req_done(req);
1173         return true;
1174 }
1175
1176 bool push_deferred_open_message_smb2(struct smbd_smb2_request *smb2req,
1177                                 struct timeval request_time,
1178                                 struct timeval timeout,
1179                                 struct file_id id,
1180                                 char *private_data,
1181                                 size_t priv_len)
1182 {
1183         struct tevent_req *req = NULL;
1184         struct smbd_smb2_create_state *state = NULL;
1185         struct timeval end_time;
1186
1187         if (!smb2req) {
1188                 return false;
1189         }
1190         req = smb2req->subreq;
1191         if (!req) {
1192                 return false;
1193         }
1194         state = tevent_req_data(req, struct smbd_smb2_create_state);
1195         if (!state) {
1196                 return false;
1197         }
1198         state->id = id;
1199         state->request_time = request_time;
1200         state->private_data = data_blob_talloc(state, private_data,
1201                                                 priv_len);
1202         if (!state->private_data.data) {
1203                 return false;
1204         }
1205
1206 #if 1
1207         /* Boo - turns out this isn't what W2K8R2
1208            does. It actually sends the STATUS_PENDING
1209            message followed by the STATUS_SHARING_VIOLATION
1210            message. Surely this means that all open
1211            calls (even on directories) will potentially
1212            fail in a chain.... ? And I've seen directory
1213            opens as the start of a chain. JRA.
1214
1215            Update: 19th May 2010. Talking with Microsoft
1216            engineers at the plugfest this is a bug in
1217            Windows. Re-enable this code.
1218         */
1219         /*
1220          * More subtlety. To match W2K8R2 don't
1221          * send a "gone async" message if it's simply
1222          * a STATUS_SHARING_VIOLATION (short) wait, not
1223          * an oplock break wait. We do this by prematurely
1224          * setting smb2req->async flag.
1225          */
1226         if (timeout.tv_sec < 2) {
1227                 DEBUG(10,("push_deferred_open_message_smb2: "
1228                         "short timer wait (usec = %u). "
1229                         "Don't send async message.\n",
1230                         (unsigned int)timeout.tv_usec ));
1231                 smb2req->async = true;
1232         }
1233 #endif
1234
1235         /* Re-schedule us to retry on timer expiry. */
1236         end_time = timeval_sum(&request_time, &timeout);
1237
1238         DEBUG(10,("push_deferred_open_message_smb2: "
1239                 "timeout at %s\n",
1240                 timeval_string(talloc_tos(),
1241                                 &end_time,
1242                                 true) ));
1243
1244         state->open_was_deferred = true;
1245         state->te = event_add_timed(smb2req->sconn->smb2.event_ctx,
1246                                 state,
1247                                 end_time,
1248                                 smb2_deferred_open_timer,
1249                                 smb2req);
1250         if (!state->te) {
1251                 return false;
1252         }
1253
1254         /* allow this request to be canceled */
1255         tevent_req_set_cancel_fn(req, smbd_smb2_create_cancel);
1256
1257         return true;
1258 }