source3/smbd/smb2_create.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Core SMB2 server
   4
   5    Copyright (C) Stefan Metzmacher 2009
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 3 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 */
  20
  21 #include "includes.h"
  22 #include "smbd/globals.h"
  23 #include "../libcli/smb/smb_common.h"
  24
  25 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
  26                         struct tevent_context *ev,
  27                         struct smbd_smb2_request *smb2req,
  28                         uint8_t in_oplock_level,
  29                         uint32_t in_impersonation_level,
  30                         uint32_t in_desired_access,
  31                         uint32_t in_file_attributes,
  32                         uint32_t in_share_access,
  33                         uint32_t in_create_disposition,
  34                         uint32_t in_create_options,
  35                         const char *in_name,
  36                         struct smb2_create_blobs in_context_blobs);
  37 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
  38                         TALLOC_CTX *mem_ctx,
  39                         uint8_t *out_oplock_level,
  40                         uint32_t *out_create_action,
  41                         NTTIME *out_creation_time,
  42                         NTTIME *out_last_access_time,
  43                         NTTIME *out_last_write_time,
  44                         NTTIME *out_change_time,
  45                         uint64_t *out_allocation_size,
  46                         uint64_t *out_end_of_file,
  47                         uint32_t *out_file_attributes,
  48                         uint64_t *out_file_id_volatile,
  49                         struct smb2_create_blobs *out_context_blobs);
  50
  51 static void smbd_smb2_request_create_done(struct tevent_req *subreq);
  52 NTSTATUS smbd_smb2_request_process_create(struct smbd_smb2_request *req)
  53 {
  54         const uint8_t *inbody;
  55         int i = req->current_idx;
  56         size_t expected_body_size = 0x39;
  57         size_t body_size;
  58         uint8_t in_oplock_level;
  59         uint32_t in_impersonation_level;
  60         uint32_t in_desired_access;
  61         uint32_t in_file_attributes;
  62         uint32_t in_share_access;
  63         uint32_t in_create_disposition;
  64         uint32_t in_create_options;
  65         uint16_t in_name_offset;
  66         uint16_t in_name_length;
  67         DATA_BLOB in_name_buffer;
  68         char *in_name_string;
  69         size_t in_name_string_size;
  70         uint32_t name_offset = 0;
  71         uint32_t name_available_length = 0;
  72         uint32_t in_context_offset;
  73         uint32_t in_context_length;
  74         DATA_BLOB in_context_buffer;
  75         struct smb2_create_blobs in_context_blobs;
  76         uint32_t context_offset = 0;
  77         uint32_t context_available_length = 0;
  78         uint32_t dyn_offset;
  79         NTSTATUS status;
  80         bool ok;
  81         struct tevent_req *subreq;
  82
  83         if (req->in.vector[i+1].iov_len != (expected_body_size & 0xFFFFFFFE)) {
  84                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  85         }
  86
  87         inbody = (const uint8_t *)req->in.vector[i+1].iov_base;
  88
  89         body_size = SVAL(inbody, 0x00);
  90         if (body_size != expected_body_size) {
  91                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
  92         }
  93
  94         in_oplock_level         = CVAL(inbody, 0x03);
  95         in_impersonation_level  = IVAL(inbody, 0x04);
  96         in_desired_access       = IVAL(inbody, 0x18);
  97         in_file_attributes      = IVAL(inbody, 0x1C);
  98         in_share_access         = IVAL(inbody, 0x20);
  99         in_create_disposition   = IVAL(inbody, 0x24);
 100         in_create_options       = IVAL(inbody, 0x28);
 101         in_name_offset          = SVAL(inbody, 0x2C);
 102         in_name_length          = SVAL(inbody, 0x2E);
 103         in_context_offset       = IVAL(inbody, 0x30);
 104         in_context_length       = IVAL(inbody, 0x34);
 105
 106         /*
 107          * First check if the dynamic name and context buffers
 108          * are correctly specified.
 109          *
 110          * Note: That we don't check if the name and context buffers
 111          *       overlap
 112          */
 113
 114         dyn_offset = SMB2_HDR_BODY + (body_size & 0xFFFFFFFE);
 115
 116         if (in_name_offset == 0 && in_name_length == 0) {
 117                 /* This is ok */
 118                 name_offset = 0;
 119         } else if (in_name_offset < dyn_offset) {
 120                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
 121         } else {
 122                 name_offset = in_name_offset - dyn_offset;
 123         }
 124
 125         if (name_offset > req->in.vector[i+2].iov_len) {
 126                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
 127         }
 128
 129         name_available_length = req->in.vector[i+2].iov_len - name_offset;
 130
 131         if (in_name_length > name_available_length) {
 132                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
 133         }
 134
 135         in_name_buffer.data = (uint8_t *)req->in.vector[i+2].iov_base +
 136                               name_offset;
 137         in_name_buffer.length = in_name_length;
 138
 139         if (in_context_offset == 0 && in_context_length == 0) {
 140                 /* This is ok */
 141                 context_offset = 0;
 142         } else if (in_context_offset < dyn_offset) {
 143                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
 144         } else {
 145                 context_offset = in_context_offset - dyn_offset;
 146         }
 147
 148         if (context_offset > req->in.vector[i+2].iov_len) {
 149                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
 150         }
 151
 152         context_available_length = req->in.vector[i+2].iov_len - context_offset;
 153
 154         if (in_context_length > context_available_length) {
 155                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
 156         }
 157
 158         in_context_buffer.data = (uint8_t *)req->in.vector[i+2].iov_base +
 159                                   context_offset;
 160         in_context_buffer.length = in_context_length;
 161
 162         /*
 163          * Now interpret the name and context buffers
 164          */
 165
 166         ok = convert_string_talloc(req, CH_UTF16, CH_UNIX,
 167                                    in_name_buffer.data,
 168                                    in_name_buffer.length,
 169                                    &in_name_string,
 170                                    &in_name_string_size, false);
 171         if (!ok) {
 172                 return smbd_smb2_request_error(req, NT_STATUS_ILLEGAL_CHARACTER);
 173         }
 174
 175         ZERO_STRUCT(in_context_blobs);
 176         status = smb2_create_blob_parse(req, in_context_buffer, &in_context_blobs);
 177         if (!NT_STATUS_IS_OK(status)) {
 178                 return smbd_smb2_request_error(req, status);
 179         }
 180
 181         subreq = smbd_smb2_create_send(req,
 182                                        req->sconn->smb2.event_ctx,
 183                                        req,
 184                                        in_oplock_level,
 185                                        in_impersonation_level,
 186                                        in_desired_access,
 187                                        in_file_attributes,
 188                                        in_share_access,
 189                                        in_create_disposition,
 190                                        in_create_options,
 191                                        in_name_string,
 192                                        in_context_blobs);
 193         if (subreq == NULL) {
 194                 return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
 195         }
 196         tevent_req_set_callback(subreq, smbd_smb2_request_create_done, req);
 197
 198         return smbd_smb2_request_pending_queue(req, subreq);
 199 }
 200
 201 static void smbd_smb2_request_create_done(struct tevent_req *subreq)
 202 {
 203         struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
 204                                         struct smbd_smb2_request);
 205         int i = req->current_idx;
 206         uint8_t *outhdr;
 207         DATA_BLOB outbody;
 208         DATA_BLOB outdyn;
 209         uint8_t out_oplock_level = 0;
 210         uint32_t out_create_action = 0;
 211         NTTIME out_creation_time = 0;
 212         NTTIME out_last_access_time = 0;
 213         NTTIME out_last_write_time = 0;
 214         NTTIME out_change_time = 0;
 215         uint64_t out_allocation_size = 0;
 216         uint64_t out_end_of_file = 0;
 217         uint32_t out_file_attributes = 0;
 218         uint64_t out_file_id_volatile = 0;
 219         struct smb2_create_blobs out_context_blobs;
 220         DATA_BLOB out_context_buffer;
 221         uint16_t out_context_buffer_offset = 0;
 222         NTSTATUS status;
 223         NTSTATUS error; /* transport error */
 224
 225         status = smbd_smb2_create_recv(subreq,
 226                                        req,
 227                                        &out_oplock_level,
 228                                        &out_create_action,
 229                                        &out_creation_time,
 230                                        &out_last_access_time,
 231                                        &out_last_write_time,
 232                                        &out_change_time,
 233                                        &out_allocation_size,
 234                                        &out_end_of_file,
 235                                        &out_file_attributes,
 236                                        &out_file_id_volatile,
 237                                        &out_context_blobs);
 238         TALLOC_FREE(subreq);
 239         if (!NT_STATUS_IS_OK(status)) {
 240                 error = smbd_smb2_request_error(req, status);
 241                 if (!NT_STATUS_IS_OK(error)) {
 242                         smbd_server_connection_terminate(req->sconn,
 243                                                          nt_errstr(error));
 244                         return;
 245                 }
 246                 return;
 247         }
 248
 249         status = smb2_create_blob_push(req, &out_context_buffer, out_context_blobs);
 250         if (!NT_STATUS_IS_OK(status)) {
 251                 error = smbd_smb2_request_error(req, status);
 252                 if (!NT_STATUS_IS_OK(error)) {
 253                         smbd_server_connection_terminate(req->sconn,
 254                                                          nt_errstr(error));
 255                         return;
 256                 }
 257                 return;
 258         }
 259
 260         if (out_context_buffer.length > 0) {
 261                 out_context_buffer_offset = SMB2_HDR_BODY + 0x58;
 262         }
 263
 264         outhdr = (uint8_t *)req->out.vector[i].iov_base;
 265
 266         outbody = data_blob_talloc(req->out.vector, NULL, 0x58);
 267         if (outbody.data == NULL) {
 268                 error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
 269                 if (!NT_STATUS_IS_OK(error)) {
 270                         smbd_server_connection_terminate(req->sconn,
 271                                                          nt_errstr(error));
 272                         return;
 273                 }
 274                 return;
 275         }
 276
 277         SSVAL(outbody.data, 0x00, 0x58 + 1);    /* struct size */
 278         SCVAL(outbody.data, 0x02,
 279               out_oplock_level);                /* oplock level */
 280         SCVAL(outbody.data, 0x03, 0);           /* reserved */
 281         SIVAL(outbody.data, 0x04,
 282               out_create_action);               /* create action */
 283         SBVAL(outbody.data, 0x08,
 284               out_creation_time);               /* creation time */
 285         SBVAL(outbody.data, 0x10,
 286               out_last_access_time);            /* last access time */
 287         SBVAL(outbody.data, 0x18,
 288               out_last_write_time);             /* last write time */
 289         SBVAL(outbody.data, 0x20,
 290               out_change_time);                 /* change time */
 291         SBVAL(outbody.data, 0x28,
 292               out_allocation_size);             /* allocation size */
 293         SBVAL(outbody.data, 0x30,
 294               out_end_of_file);                 /* end of file */
 295         SIVAL(outbody.data, 0x38,
 296               out_file_attributes);             /* file attributes */
 297         SIVAL(outbody.data, 0x3C, 0);           /* reserved */
 298         SBVAL(outbody.data, 0x40, 0);           /* file id (persistent) */
 299         SBVAL(outbody.data, 0x48,
 300               out_file_id_volatile);            /* file id (volatile) */
 301         SIVAL(outbody.data, 0x50,
 302               out_context_buffer_offset);       /* create contexts offset */
 303         SIVAL(outbody.data, 0x54,
 304               out_context_buffer.length);       /* create contexts length */
 305
 306         outdyn = out_context_buffer;
 307
 308         error = smbd_smb2_request_done(req, outbody, &outdyn);
 309         if (!NT_STATUS_IS_OK(error)) {
 310                 smbd_server_connection_terminate(req->sconn,
 311                                                  nt_errstr(error));
 312                 return;
 313         }
 314 }
 315
 316 struct smbd_smb2_create_state {
 317         struct smbd_smb2_request *smb2req;
 318         uint8_t out_oplock_level;
 319         uint32_t out_create_action;
 320         NTTIME out_creation_time;
 321         NTTIME out_last_access_time;
 322         NTTIME out_last_write_time;
 323         NTTIME out_change_time;
 324         uint64_t out_allocation_size;
 325         uint64_t out_end_of_file;
 326         uint32_t out_file_attributes;
 327         uint64_t out_file_id_volatile;
 328         struct smb2_create_blobs out_context_blobs;
 329 };
 330
 331 static struct tevent_req *smbd_smb2_create_send(TALLOC_CTX *mem_ctx,
 332                         struct tevent_context *ev,
 333                         struct smbd_smb2_request *smb2req,
 334                         uint8_t in_oplock_level,
 335                         uint32_t in_impersonation_level,
 336                         uint32_t in_desired_access,
 337                         uint32_t in_file_attributes,
 338                         uint32_t in_share_access,
 339                         uint32_t in_create_disposition,
 340                         uint32_t in_create_options,
 341                         const char *in_name,
 342                         struct smb2_create_blobs in_context_blobs)
 343 {
 344         struct tevent_req *req;
 345         struct smbd_smb2_create_state *state;
 346         NTSTATUS status;
 347         struct smb_request *smbreq;
 348         files_struct *result;
 349         int info;
 350         SMB_STRUCT_STAT sbuf;
 351         struct smb2_create_blobs out_context_blobs;
 352
 353         ZERO_STRUCT(out_context_blobs);
 354
 355         req = tevent_req_create(mem_ctx, &state,
 356                                 struct smbd_smb2_create_state);
 357         if (req == NULL) {
 358                 return NULL;
 359         }
 360         state->smb2req = smb2req;
 361
 362         DEBUG(10,("smbd_smb2_create: name[%s]\n",
 363                   in_name));
 364
 365         smbreq = smbd_smb2_fake_smb_request(smb2req);
 366         if (tevent_req_nomem(smbreq, req)) {
 367                 return tevent_req_post(req, ev);
 368         }
 369
 370         if (IS_IPC(smbreq->conn)) {
 371                 const char *pipe_name = in_name;
 372
 373                 if (!lp_nt_pipe_support()) {
 374                         tevent_req_nterror(req, NT_STATUS_ACCESS_DENIED);
 375                         return tevent_req_post(req, ev);
 376                 }
 377
 378                 /* Strip \\ off the name. */
 379                 if (pipe_name[0] == '\\') {
 380                         pipe_name++;
 381                 }
 382
 383                 status = open_np_file(smbreq, pipe_name, &result);
 384                 if (!NT_STATUS_IS_OK(status)) {
 385                         tevent_req_nterror(req, status);
 386                         return tevent_req_post(req, ev);
 387                 }
 388                 info = FILE_WAS_OPENED;
 389                 ZERO_STRUCT(sbuf);
 390         } else if (CAN_PRINT(smbreq->conn)) {
 391                 status = file_new(smbreq, smbreq->conn, &result);
 392                 if(!NT_STATUS_IS_OK(status)) {
 393                         tevent_req_nterror(req, status);
 394                         return tevent_req_post(req, ev);
 395                 }
 396
 397                 status = print_fsp_open(smbreq,
 398                                         smbreq->conn,
 399                                         in_name,
 400                                         smbreq->vuid,
 401                                         result,
 402                                         &sbuf);
 403                 if (!NT_STATUS_IS_OK(status)) {
 404                         file_free(smbreq, result);
 405                         tevent_req_nterror(req, status);
 406                         return tevent_req_post(req, ev);
 407                 }
 408                 info = FILE_WAS_CREATED;
 409         } else {
 410                 char *fname;
 411                 struct smb_filename *smb_fname = NULL;
 412                 struct smb2_create_blob *exta = NULL;
 413                 struct ea_list *ea_list = NULL;
 414                 struct smb2_create_blob *mxac = NULL;
 415                 NTTIME max_access_time = 0;
 416                 struct smb2_create_blob *secd = NULL;
 417                 struct security_descriptor *sec_desc = NULL;
 418                 struct smb2_create_blob *dhnq = NULL;
 419                 struct smb2_create_blob *dhnc = NULL;
 420                 struct smb2_create_blob *alsi = NULL;
 421                 uint64_t allocation_size = 0;
 422                 struct smb2_create_blob *twrp = NULL;
 423                 struct smb2_create_blob *qfid = NULL;
 424
 425                 exta = smb2_create_blob_find(&in_context_blobs,
 426                                              SMB2_CREATE_TAG_EXTA);
 427                 mxac = smb2_create_blob_find(&in_context_blobs,
 428                                              SMB2_CREATE_TAG_MXAC);
 429                 secd = smb2_create_blob_find(&in_context_blobs,
 430                                              SMB2_CREATE_TAG_SECD);
 431                 dhnq = smb2_create_blob_find(&in_context_blobs,
 432                                              SMB2_CREATE_TAG_DHNQ);
 433                 dhnc = smb2_create_blob_find(&in_context_blobs,
 434                                              SMB2_CREATE_TAG_DHNC);
 435                 alsi = smb2_create_blob_find(&in_context_blobs,
 436                                              SMB2_CREATE_TAG_ALSI);
 437                 twrp = smb2_create_blob_find(&in_context_blobs,
 438                                              SMB2_CREATE_TAG_TWRP);
 439                 qfid = smb2_create_blob_find(&in_context_blobs,
 440                                              SMB2_CREATE_TAG_QFID);
 441
 442                 fname = talloc_strdup(state, in_name);
 443                 if (tevent_req_nomem(fname, req)) {
 444                         return tevent_req_post(req, ev);
 445                 }
 446
 447                 if (exta) {
 448                         if (dhnc) {
 449                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 450                                 return tevent_req_post(req, ev);
 451                         }
 452
 453                         ea_list = read_nttrans_ea_list(mem_ctx,
 454                                 (const char *)exta->data.data, exta->data.length);
 455                         if (!ea_list) {
 456                                 DEBUG(10,("smbd_smb2_create_send: read_ea_name_list failed.\n"));
 457                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 458                                 return tevent_req_post(req, ev);
 459                         }
 460                 }
 461
 462                 if (mxac) {
 463                         if (dhnc) {
 464                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 465                                 return tevent_req_post(req, ev);
 466                         }
 467
 468                         if (mxac->data.length == 0) {
 469                                 max_access_time = 0;
 470                         } else if (mxac->data.length == 8) {
 471                                 max_access_time = BVAL(mxac->data.data, 0);
 472                         } else {
 473                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 474                                 return tevent_req_post(req, ev);
 475                         }
 476                 }
 477
 478                 if (secd) {
 479                         enum ndr_err_code ndr_err;
 480
 481                         if (dhnc) {
 482                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 483                                 return tevent_req_post(req, ev);
 484                         }
 485
 486                         sec_desc = talloc_zero(state, struct security_descriptor);
 487                         if (tevent_req_nomem(sec_desc, req)) {
 488                                 return tevent_req_post(req, ev);
 489                         }
 490
 491                         ndr_err = ndr_pull_struct_blob(&secd->data,
 492                                 sec_desc, NULL, sec_desc,
 493                                 (ndr_pull_flags_fn_t)ndr_pull_security_descriptor);
 494                         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 495                                 DEBUG(2,("ndr_pull_security_descriptor failed: %s\n",
 496                                          ndr_errstr(ndr_err)));
 497                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 498                                 return tevent_req_post(req, ev);
 499                         }
 500                 }
 501
 502                 if (dhnq) {
 503                         if (dhnc) {
 504                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 505                                 return tevent_req_post(req, ev);
 506                         }
 507
 508                         if (dhnq->data.length != 16) {
 509                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 510                                 return tevent_req_post(req, ev);
 511                         }
 512                         /*
 513                          * we don't support durable handles yet
 514                          * and have to ignore this
 515                          */
 516                 }
 517
 518                 if (dhnc) {
 519                         if (dhnc->data.length != 16) {
 520                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 521                                 return tevent_req_post(req, ev);
 522                         }
 523                         /* we don't support durable handles yet */
 524                         tevent_req_nterror(req, NT_STATUS_OBJECT_NAME_NOT_FOUND);
 525                         return tevent_req_post(req, ev);
 526                 }
 527
 528                 if (alsi) {
 529                         if (dhnc) {
 530                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 531                                 return tevent_req_post(req, ev);
 532                         }
 533
 534                         if (alsi->data.length != 8) {
 535                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 536                                 return tevent_req_post(req, ev);
 537                         }
 538                         allocation_size = BVAL(alsi->data.data, 0);
 539                 }
 540
 541                 if (twrp) {
 542                         NTTIME nttime;
 543                         time_t t;
 544                         struct tm *tm;
 545
 546                         if (dhnc) {
 547                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 548                                 return tevent_req_post(req, ev);
 549                         }
 550
 551                         if (twrp->data.length != 8) {
 552                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 553                                 return tevent_req_post(req, ev);
 554                         }
 555
 556                         nttime = BVAL(twrp->data.data, 0);
 557                         t = nt_time_to_unix(nttime);
 558                         tm = gmtime(&t);
 559
 560                         TALLOC_FREE(fname);
 561                         fname = talloc_asprintf(state,
 562                                         "@GMT-%04u.%02u.%02u-%02u.%02u.%02u\\%s",
 563                                         tm->tm_year + 1900,
 564                                         tm->tm_mon + 1,
 565                                         tm->tm_mday,
 566                                         tm->tm_hour,
 567                                         tm->tm_min,
 568                                         tm->tm_sec,
 569                                         in_name);
 570                         if (tevent_req_nomem(fname, req)) {
 571                                 return tevent_req_post(req, ev);
 572                         }
 573                 }
 574
 575                 if (qfid) {
 576                         if (qfid->data.length != 0) {
 577                                 tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
 578                                 return tevent_req_post(req, ev);
 579                         }
 580                 }
 581
 582                 /* these are ignored for SMB2 */
 583                 in_create_options &= ~(0x10);/* NTCREATEX_OPTIONS_SYNC_ALERT */
 584                 in_create_options &= ~(0x20);/* NTCREATEX_OPTIONS_ASYNC_ALERT */
 585
 586                 /* convert '\\' into '/' */
 587                 status = check_path_syntax(fname);
 588                 if (!NT_STATUS_IS_OK(status)) {
 589                         tevent_req_nterror(req, status);
 590                         return tevent_req_post(req, ev);
 591                 }
 592
 593                 status = filename_convert(req,
 594                                           smbreq->conn,
 595                                           smbreq->flags2 & FLAGS2_DFS_PATHNAMES,
 596                                           fname,
 597                                           0,
 598                                           NULL,
 599                                           &smb_fname);
 600                 if (!NT_STATUS_IS_OK(status)) {
 601                         tevent_req_nterror(req, status);
 602                         return tevent_req_post(req, ev);
 603                 }
 604
 605                 status = SMB_VFS_CREATE_FILE(smbreq->conn,
 606                                              smbreq,
 607                                              0, /* root_dir_fid */
 608                                              smb_fname,
 609                                              in_desired_access,
 610                                              in_share_access,
 611                                              in_create_disposition,
 612                                              in_create_options,
 613                                              in_file_attributes,
 614                                              0, /* oplock_request */
 615                                              allocation_size,
 616                                              sec_desc,
 617                                              ea_list,
 618                                              &result,
 619                                              &info);
 620                 if (!NT_STATUS_IS_OK(status)) {
 621                         tevent_req_nterror(req, status);
 622                         return tevent_req_post(req, ev);
 623                 }
 624
 625                 if (mxac) {
 626                         NTTIME last_write_time;
 627
 628                         unix_timespec_to_nt_time(&last_write_time,
 629                                                  result->fsp_name->st.st_ex_mtime);
 630                         if (last_write_time != max_access_time) {
 631                                 uint8_t p[8];
 632                                 uint32_t max_access_granted;
 633                                 DATA_BLOB blob = data_blob_const(p, sizeof(p));
 634
 635                                 status = smbd_check_open_rights(smbreq->conn,
 636                                                         result->fsp_name,
 637                                                         SEC_FLAG_MAXIMUM_ALLOWED,
 638                                                         &max_access_granted);
 639
 640                                 SIVAL(p, 0, NT_STATUS_V(status));
 641                                 SIVAL(p, 4, max_access_granted);
 642
 643                                 status = smb2_create_blob_add(state,
 644                                                         &out_context_blobs,
 645                                                         SMB2_CREATE_TAG_MXAC,
 646                                                         blob);
 647                                 if (!NT_STATUS_IS_OK(status)) {
 648                                         tevent_req_nterror(req, status);
 649                                         return tevent_req_post(req, ev);
 650                                 }
 651                         }
 652                 }
 653
 654                 if (qfid) {
 655                         uint8_t p[32];
 656                         DATA_BLOB blob = data_blob_const(p, sizeof(p));
 657
 658                         ZERO_STRUCT(p);
 659
 660                         /* TODO: maybe use result->file_id */
 661                         SIVAL(p, 0, result->fsp_name->st.st_ex_ino);/* FileIndexLow */
 662                         SIVAL(p, 4, result->fsp_name->st.st_ex_dev);/* FileIndexHigh */
 663
 664                         status = smb2_create_blob_add(state, &out_context_blobs,
 665                                                       SMB2_CREATE_TAG_QFID,
 666                                                       blob);
 667                         if (!NT_STATUS_IS_OK(status)) {
 668                                 tevent_req_nterror(req, status);
 669                                 return tevent_req_post(req, ev);
 670                         }
 671                 }
 672
 673                 sbuf = result->fsp_name->st;
 674         }
 675
 676         smb2req->compat_chain_fsp = smbreq->chain_fsp;
 677
 678         state->out_oplock_level = 0;
 679         if ((in_create_disposition == FILE_SUPERSEDE)
 680             && (info == FILE_WAS_OVERWRITTEN)) {
 681                 state->out_create_action = FILE_WAS_SUPERSEDED;
 682         } else {
 683                 state->out_create_action = info;
 684         }
 685         unix_timespec_to_nt_time(&state->out_creation_time, sbuf.st_ex_btime);
 686         unix_timespec_to_nt_time(&state->out_last_access_time, sbuf.st_ex_atime);
 687         unix_timespec_to_nt_time(&state->out_last_write_time,sbuf.st_ex_mtime);
 688         unix_timespec_to_nt_time(&state->out_change_time, sbuf.st_ex_ctime);
 689         state->out_allocation_size      = sbuf.st_ex_blksize * sbuf.st_ex_blocks;
 690         state->out_end_of_file          = sbuf.st_ex_size;
 691         state->out_file_attributes      = dos_mode(result->conn,
 692                                                    result->fsp_name);
 693         if (state->out_file_attributes == 0) {
 694                 state->out_file_attributes = FILE_ATTRIBUTE_NORMAL;
 695         }
 696         state->out_file_id_volatile = result->fnum;
 697         state->out_context_blobs = out_context_blobs;
 698
 699         tevent_req_done(req);
 700         return tevent_req_post(req, ev);
 701 }
 702
 703 static NTSTATUS smbd_smb2_create_recv(struct tevent_req *req,
 704                         TALLOC_CTX *mem_ctx,
 705                         uint8_t *out_oplock_level,
 706                         uint32_t *out_create_action,
 707                         NTTIME *out_creation_time,
 708                         NTTIME *out_last_access_time,
 709                         NTTIME *out_last_write_time,
 710                         NTTIME *out_change_time,
 711                         uint64_t *out_allocation_size,
 712                         uint64_t *out_end_of_file,
 713                         uint32_t *out_file_attributes,
 714                         uint64_t *out_file_id_volatile,
 715                         struct smb2_create_blobs *out_context_blobs)
 716 {
 717         NTSTATUS status;
 718         struct smbd_smb2_create_state *state = tevent_req_data(req,
 719                                                struct smbd_smb2_create_state);
 720
 721         if (tevent_req_is_nterror(req, &status)) {
 722                 tevent_req_received(req);
 723                 return status;
 724         }
 725
 726         *out_oplock_level       = state->out_oplock_level;
 727         *out_create_action      = state->out_create_action;
 728         *out_creation_time      = state->out_creation_time;
 729         *out_last_access_time   = state->out_last_access_time;
 730         *out_last_write_time    = state->out_last_write_time;
 731         *out_change_time        = state->out_change_time;
 732         *out_allocation_size    = state->out_allocation_size;
 733         *out_end_of_file        = state->out_end_of_file;
 734         *out_file_attributes    = state->out_file_attributes;
 735         *out_file_id_volatile   = state->out_file_id_volatile;
 736         *out_context_blobs      = state->out_context_blobs;
 737
 738         talloc_steal(mem_ctx, state->out_context_blobs.blobs);
 739
 740         tevent_req_received(req);
 741         return NT_STATUS_OK;
 742 }