source3/smbd/smb2_ioctl.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/smbd.h"
  23 #include "smbd/globals.h"
  24 #include "../libcli/smb/smb_common.h"
  25 #include "../lib/util/tevent_ntstatus.h"
  26 #include "rpc_server/srv_pipe_hnd.h"
  27 #include "include/ntioctl.h"
  28 #include "../librpc/ndr/libndr.h"
  29
  30 static struct tevent_req *smbd_smb2_ioctl_send(TALLOC_CTX *mem_ctx,
  31                                                struct tevent_context *ev,
  32                                                struct smbd_smb2_request *smb2req,
  33                                                struct files_struct *in_fsp,
  34                                                uint32_t in_ctl_code,
  35                                                DATA_BLOB in_input,
  36                                                uint32_t in_max_output,
  37                                                uint32_t in_flags);
  38 static NTSTATUS smbd_smb2_ioctl_recv(struct tevent_req *req,
  39                                      TALLOC_CTX *mem_ctx,
  40                                      DATA_BLOB *out_output,
  41                                      bool *disconnect);
  42
  43 static void smbd_smb2_request_ioctl_done(struct tevent_req *subreq);
  44 NTSTATUS smbd_smb2_request_process_ioctl(struct smbd_smb2_request *req)
  45 {
  46         NTSTATUS status;
  47         const uint8_t *inbody;
  48         uint32_t min_buffer_offset;
  49         uint32_t max_buffer_offset;
  50         uint32_t min_output_offset;
  51         uint32_t allowed_length_in;
  52         uint32_t allowed_length_out;
  53         uint32_t in_ctl_code;
  54         uint64_t in_file_id_persistent;
  55         uint64_t in_file_id_volatile;
  56         struct files_struct *in_fsp = NULL;
  57         uint32_t in_input_offset;
  58         uint32_t in_input_length;
  59         DATA_BLOB in_input_buffer = data_blob_null;
  60         uint32_t in_max_input_length;
  61         uint32_t in_output_offset;
  62         uint32_t in_output_length;
  63         DATA_BLOB in_output_buffer = data_blob_null;
  64         uint32_t in_max_output_length;
  65         uint32_t in_flags;
  66         uint32_t data_length_in;
  67         uint32_t data_length_out;
  68         uint32_t data_length_tmp;
  69         uint32_t data_length_max;
  70         struct tevent_req *subreq;
  71
  72         status = smbd_smb2_request_verify_sizes(req, 0x39);
  73         if (!NT_STATUS_IS_OK(status)) {
  74                 return smbd_smb2_request_error(req, status);
  75         }
  76         inbody = SMBD_SMB2_IN_BODY_PTR(req);
  77
  78         in_ctl_code             = IVAL(inbody, 0x04);
  79         in_file_id_persistent   = BVAL(inbody, 0x08);
  80         in_file_id_volatile     = BVAL(inbody, 0x10);
  81         in_input_offset         = IVAL(inbody, 0x18);
  82         in_input_length         = IVAL(inbody, 0x1C);
  83         in_max_input_length     = IVAL(inbody, 0x20);
  84         in_output_offset        = IVAL(inbody, 0x24);
  85         in_output_length        = IVAL(inbody, 0x28);
  86         in_max_output_length    = IVAL(inbody, 0x2C);
  87         in_flags                = IVAL(inbody, 0x30);
  88
  89         min_buffer_offset = SMB2_HDR_BODY + SMBD_SMB2_IN_BODY_LEN(req);
  90         max_buffer_offset = min_buffer_offset + SMBD_SMB2_IN_DYN_LEN(req);
  91         min_output_offset = min_buffer_offset;
  92
  93         /*
  94          * InputOffset (4 bytes): The offset, in bytes, from the beginning of
  95          * the SMB2 header to the input data buffer. If no input data is
  96          * required for the FSCTL/IOCTL command being issued, the client SHOULD
  97          * set this value to 0.<49>
  98          * <49> If no input data is required for the FSCTL/IOCTL command being
  99          * issued, Windows-based clients set this field to any value.
 100          */
 101         allowed_length_in = 0;
 102         if ((in_input_offset > 0) && (in_input_length > 0)) {
 103                 uint32_t tmp_ofs;
 104
 105                 if (in_input_offset < min_buffer_offset) {
 106                         return smbd_smb2_request_error(req,
 107                                         NT_STATUS_INVALID_PARAMETER);
 108                 }
 109                 if (in_input_offset > max_buffer_offset) {
 110                         return smbd_smb2_request_error(req,
 111                                         NT_STATUS_INVALID_PARAMETER);
 112                 }
 113                 allowed_length_in = max_buffer_offset - in_input_offset;
 114
 115                 tmp_ofs = in_input_offset - min_buffer_offset;
 116                 in_input_buffer.data = SMBD_SMB2_IN_DYN_PTR(req);
 117                 in_input_buffer.data += tmp_ofs;
 118                 in_input_buffer.length = in_input_length;
 119                 min_output_offset += tmp_ofs;
 120                 min_output_offset += in_input_length;
 121         }
 122
 123         if (in_input_length > allowed_length_in) {
 124                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
 125         }
 126
 127         allowed_length_out = 0;
 128         if (in_output_offset > 0) {
 129                 if (in_output_offset < min_buffer_offset) {
 130                         return smbd_smb2_request_error(req,
 131                                         NT_STATUS_INVALID_PARAMETER);
 132                 }
 133                 if (in_output_offset > max_buffer_offset) {
 134                         return smbd_smb2_request_error(req,
 135                                         NT_STATUS_INVALID_PARAMETER);
 136                 }
 137                 allowed_length_out = max_buffer_offset - in_output_offset;
 138         }
 139
 140         if (in_output_length > allowed_length_out) {
 141                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
 142         }
 143
 144         if (in_output_length > 0) {
 145                 uint32_t tmp_ofs;
 146
 147                 if (in_output_offset < min_output_offset) {
 148                         return smbd_smb2_request_error(req,
 149                                         NT_STATUS_INVALID_PARAMETER);
 150                 }
 151
 152                 tmp_ofs = in_output_offset - min_buffer_offset;
 153                 in_output_buffer.data = SMBD_SMB2_IN_DYN_PTR(req);
 154                 in_output_buffer.data += tmp_ofs;
 155                 in_output_buffer.length = in_output_length;
 156         }
 157
 158         /*
 159          * verify the credits and avoid overflows
 160          * in_input_buffer.length and in_output_buffer.length
 161          * are already verified.
 162          */
 163         data_length_in = in_input_buffer.length + in_output_buffer.length;
 164
 165         data_length_out = in_max_input_length;
 166         data_length_tmp = UINT32_MAX - data_length_out;
 167         if (data_length_tmp < in_max_output_length) {
 168                 return smbd_smb2_request_error(req, NT_STATUS_INVALID_PARAMETER);
 169         }
 170         data_length_out += in_max_output_length;
 171
 172         data_length_max = MAX(data_length_in, data_length_out);
 173
 174         status = smbd_smb2_request_verify_creditcharge(req, data_length_max);
 175         if (!NT_STATUS_IS_OK(status)) {
 176                 return smbd_smb2_request_error(req, status);
 177         }
 178
 179         /*
 180          * If the Flags field of the request is not SMB2_0_IOCTL_IS_FSCTL the
 181          * server MUST fail the request with STATUS_NOT_SUPPORTED.
 182          */
 183         if (in_flags != SMB2_IOCTL_FLAG_IS_FSCTL) {
 184                 return smbd_smb2_request_error(req, NT_STATUS_NOT_SUPPORTED);
 185         }
 186
 187         switch (in_ctl_code) {
 188         case FSCTL_DFS_GET_REFERRALS:
 189         case FSCTL_DFS_GET_REFERRALS_EX:
 190         case FSCTL_PIPE_WAIT:
 191         case FSCTL_VALIDATE_NEGOTIATE_INFO_224:
 192         case FSCTL_VALIDATE_NEGOTIATE_INFO:
 193         case FSCTL_QUERY_NETWORK_INTERFACE_INFO:
 194                 /*
 195                  * Some SMB2 specific CtlCodes like FSCTL_DFS_GET_REFERRALS or
 196                  * FSCTL_PIPE_WAIT does not take a file handle.
 197                  *
 198                  * If FileId in the SMB2 Header of the request is not
 199                  * 0xFFFFFFFFFFFFFFFF, then the server MUST fail the request
 200                  * with STATUS_INVALID_PARAMETER.
 201                  */
 202                 if (in_file_id_persistent != UINT64_MAX ||
 203                     in_file_id_volatile != UINT64_MAX) {
 204                         return smbd_smb2_request_error(req,
 205                                 NT_STATUS_INVALID_PARAMETER);
 206                 }
 207                 break;
 208         default:
 209                 in_fsp = file_fsp_smb2(req, in_file_id_persistent,
 210                                        in_file_id_volatile);
 211                 if (in_fsp == NULL) {
 212                         return smbd_smb2_request_error(req, NT_STATUS_FILE_CLOSED);
 213                 }
 214                 break;
 215         }
 216
 217         subreq = smbd_smb2_ioctl_send(req, req->sconn->ev_ctx,
 218                                       req, in_fsp,
 219                                       in_ctl_code,
 220                                       in_input_buffer,
 221                                       in_max_output_length,
 222                                       in_flags);
 223         if (subreq == NULL) {
 224                 return smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
 225         }
 226         tevent_req_set_callback(subreq, smbd_smb2_request_ioctl_done, req);
 227
 228         return smbd_smb2_request_pending_queue(req, subreq, 1000);
 229 }
 230
 231 static void smbd_smb2_request_ioctl_done(struct tevent_req *subreq)
 232 {
 233         struct smbd_smb2_request *req = tevent_req_callback_data(subreq,
 234                                         struct smbd_smb2_request);
 235         const uint8_t *inbody;
 236         DATA_BLOB outbody;
 237         DATA_BLOB outdyn;
 238         uint32_t in_ctl_code;
 239         uint64_t in_file_id_persistent;
 240         uint64_t in_file_id_volatile;
 241         uint32_t out_input_offset;
 242         uint32_t out_output_offset;
 243         DATA_BLOB out_output_buffer = data_blob_null;
 244         NTSTATUS status;
 245         NTSTATUS error; /* transport error */
 246         bool disconnect = false;
 247
 248         status = smbd_smb2_ioctl_recv(subreq, req,
 249                                       &out_output_buffer,
 250                                       &disconnect);
 251
 252         DEBUG(10,("smbd_smb2_request_ioctl_done: smbd_smb2_ioctl_recv returned "
 253                 "%u status %s\n",
 254                 (unsigned int)out_output_buffer.length,
 255                 nt_errstr(status) ));
 256
 257         TALLOC_FREE(subreq);
 258         if (disconnect) {
 259                 error = status;
 260                 smbd_server_connection_terminate(req->sconn,
 261                                                  nt_errstr(error));
 262                 return;
 263         }
 264
 265         if (NT_STATUS_EQUAL(status, STATUS_BUFFER_OVERFLOW)) {
 266                 /* also ok */
 267         } else if (!NT_STATUS_IS_OK(status)) {
 268                 error = smbd_smb2_request_error(req, status);
 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         out_input_offset = SMB2_HDR_BODY + 0x30;
 278         out_output_offset = SMB2_HDR_BODY + 0x30;
 279
 280         inbody = SMBD_SMB2_IN_BODY_PTR(req);
 281
 282         in_ctl_code             = IVAL(inbody, 0x04);
 283         in_file_id_persistent   = BVAL(inbody, 0x08);
 284         in_file_id_volatile     = BVAL(inbody, 0x10);
 285
 286         outbody = data_blob_talloc(req->out.vector, NULL, 0x30);
 287         if (outbody.data == NULL) {
 288                 error = smbd_smb2_request_error(req, NT_STATUS_NO_MEMORY);
 289                 if (!NT_STATUS_IS_OK(error)) {
 290                         smbd_server_connection_terminate(req->sconn,
 291                                                          nt_errstr(error));
 292                         return;
 293                 }
 294                 return;
 295         }
 296
 297         SSVAL(outbody.data, 0x00, 0x30 + 1);    /* struct size */
 298         SSVAL(outbody.data, 0x02, 0);           /* reserved */
 299         SIVAL(outbody.data, 0x04,
 300               in_ctl_code);                     /* ctl code */
 301         SBVAL(outbody.data, 0x08,
 302               in_file_id_persistent);           /* file id (persistent) */
 303         SBVAL(outbody.data, 0x10,
 304               in_file_id_volatile);             /* file id (volatile) */
 305         SIVAL(outbody.data, 0x18,
 306               out_input_offset);                /* input offset */
 307         SIVAL(outbody.data, 0x1C, 0);           /* input count */
 308         SIVAL(outbody.data, 0x20,
 309               out_output_offset);               /* output offset */
 310         SIVAL(outbody.data, 0x24,
 311               out_output_buffer.length);        /* output count */
 312         SIVAL(outbody.data, 0x28, 0);           /* flags */
 313         SIVAL(outbody.data, 0x2C, 0);           /* reserved */
 314
 315         /*
 316          * Note: Windows Vista and 2008 send back also the
 317          *       input from the request. But it was fixed in
 318          *       Windows 7.
 319          */
 320         outdyn = out_output_buffer;
 321
 322         error = smbd_smb2_request_done_ex(req, status, outbody, &outdyn,
 323                                           __location__);
 324         if (!NT_STATUS_IS_OK(error)) {
 325                 smbd_server_connection_terminate(req->sconn,
 326                                                  nt_errstr(error));
 327                 return;
 328         }
 329 }
 330
 331 static NTSTATUS fsctl_dfs_get_refers(TALLOC_CTX *mem_ctx,
 332                                      struct tevent_context *ev,
 333                                      struct connection_struct *conn,
 334                                      DATA_BLOB *in_input,
 335                                      uint32_t in_max_output,
 336                                      DATA_BLOB *out_output)
 337 {
 338         uint16_t in_max_referral_level;
 339         DATA_BLOB in_file_name_buffer;
 340         char *in_file_name_string;
 341         size_t in_file_name_string_size;
 342         bool ok;
 343         bool overflow = false;
 344         NTSTATUS status;
 345         int dfs_size;
 346         char *dfs_data = NULL;
 347         DATA_BLOB output;
 348
 349         if (!IS_IPC(conn)) {
 350                 return NT_STATUS_INVALID_DEVICE_REQUEST;
 351         }
 352
 353         if (!lp_host_msdfs()) {
 354                 return NT_STATUS_FS_DRIVER_REQUIRED;
 355         }
 356
 357         if (in_input->length < (2 + 2)) {
 358                 return NT_STATUS_INVALID_PARAMETER;
 359         }
 360
 361         in_max_referral_level = SVAL(in_input->data, 0);
 362         in_file_name_buffer.data = in_input->data + 2;
 363         in_file_name_buffer.length = in_input->length - 2;
 364
 365         ok = convert_string_talloc(mem_ctx, CH_UTF16, CH_UNIX,
 366                                    in_file_name_buffer.data,
 367                                    in_file_name_buffer.length,
 368                                    &in_file_name_string,
 369                                    &in_file_name_string_size);
 370         if (!ok) {
 371                 return NT_STATUS_ILLEGAL_CHARACTER;
 372         }
 373
 374         dfs_size = setup_dfs_referral(conn,
 375                                       in_file_name_string,
 376                                       in_max_referral_level,
 377                                       &dfs_data, &status);
 378         if (dfs_size < 0) {
 379                 return status;
 380         }
 381
 382         if (dfs_size > in_max_output) {
 383                 /*
 384                  * TODO: we need a testsuite for this
 385                  */
 386                 overflow = true;
 387                 dfs_size = in_max_output;
 388         }
 389
 390         output = data_blob_talloc(mem_ctx, (uint8_t *)dfs_data, dfs_size);
 391         SAFE_FREE(dfs_data);
 392         if ((dfs_size > 0) && (output.data == NULL)) {
 393                 return NT_STATUS_NO_MEMORY;
 394         }
 395         *out_output = output;
 396
 397         if (overflow) {
 398                 return STATUS_BUFFER_OVERFLOW;
 399         }
 400         return NT_STATUS_OK;
 401 }
 402
 403 static NTSTATUS fsctl_validate_neg_info(TALLOC_CTX *mem_ctx,
 404                                         struct tevent_context *ev,
 405                                         struct smbXsrv_connection *conn,
 406                                         DATA_BLOB *in_input,
 407                                         uint32_t in_max_output,
 408                                         DATA_BLOB *out_output,
 409                                         bool *disconnect)
 410 {
 411         uint32_t in_capabilities;
 412         DATA_BLOB in_guid_blob;
 413         struct GUID in_guid;
 414         uint16_t in_security_mode;
 415         uint16_t in_num_dialects;
 416         uint16_t i;
 417         DATA_BLOB out_guid_blob;
 418         NTSTATUS status;
 419
 420         if (in_input->length < 0x18) {
 421                 return NT_STATUS_INVALID_PARAMETER;
 422         }
 423
 424         in_capabilities = IVAL(in_input->data, 0x00);
 425         in_guid_blob = data_blob_const(in_input->data + 0x04, 16);
 426         in_security_mode = SVAL(in_input->data, 0x14);
 427         in_num_dialects = SVAL(in_input->data, 0x16);
 428
 429         if (in_input->length < (0x18 + in_num_dialects*2)) {
 430                 return NT_STATUS_INVALID_PARAMETER;
 431         }
 432
 433         if (in_max_output < 0x18) {
 434                 return NT_STATUS_BUFFER_TOO_SMALL;
 435         }
 436
 437         status = GUID_from_ndr_blob(&in_guid_blob, &in_guid);
 438         if (!NT_STATUS_IS_OK(status)) {
 439                 return status;
 440         }
 441
 442         if (in_num_dialects != conn->smb2.client.num_dialects) {
 443                 *disconnect = true;
 444                 return NT_STATUS_ACCESS_DENIED;
 445         }
 446
 447         for (i=0; i < in_num_dialects; i++) {
 448                 uint16_t v = SVAL(in_input->data, 0x18 + i*2);
 449
 450                 if (conn->smb2.client.dialects[i] != v) {
 451                         *disconnect = true;
 452                         return NT_STATUS_ACCESS_DENIED;
 453                 }
 454         }
 455
 456         if (GUID_compare(&in_guid, &conn->smb2.client.guid) != 0) {
 457                 *disconnect = true;
 458                 return NT_STATUS_ACCESS_DENIED;
 459         }
 460
 461         if (in_security_mode != conn->smb2.client.security_mode) {
 462                 *disconnect = true;
 463                 return NT_STATUS_ACCESS_DENIED;
 464         }
 465
 466         if (in_capabilities != conn->smb2.client.capabilities) {
 467                 *disconnect = true;
 468                 return NT_STATUS_ACCESS_DENIED;
 469         }
 470
 471         status = GUID_to_ndr_blob(&conn->smb2.server.guid, mem_ctx,
 472                                   &out_guid_blob);
 473         if (!NT_STATUS_IS_OK(status)) {
 474                 return status;
 475         }
 476
 477         *out_output = data_blob_talloc(mem_ctx, NULL, 0x18);
 478         if (out_output->data == NULL) {
 479                 return NT_STATUS_NO_MEMORY;
 480         }
 481
 482         SIVAL(out_output->data, 0x00, conn->smb2.server.capabilities);
 483         memcpy(out_output->data+0x04, out_guid_blob.data, 16);
 484         SIVAL(out_output->data, 0x14, conn->smb2.server.security_mode);
 485         SIVAL(out_output->data, 0x16, conn->smb2.server.dialect);
 486
 487         return NT_STATUS_OK;
 488 }
 489
 490
 491 struct smbd_smb2_ioctl_state {
 492         struct smbd_smb2_request *smb2req;
 493         struct smb_request *smbreq;
 494         files_struct *fsp;
 495         DATA_BLOB in_input;
 496         uint32_t in_max_output;
 497         DATA_BLOB out_output;
 498         bool disconnect;
 499 };
 500
 501 static void smbd_smb2_ioctl_pipe_write_done(struct tevent_req *subreq);
 502 static void smbd_smb2_ioctl_pipe_read_done(struct tevent_req *subreq);
 503
 504 static struct tevent_req *smbd_smb2_ioctl_send(TALLOC_CTX *mem_ctx,
 505                                                struct tevent_context *ev,
 506                                                struct smbd_smb2_request *smb2req,
 507                                                struct files_struct *fsp,
 508                                                uint32_t in_ctl_code,
 509                                                DATA_BLOB in_input,
 510                                                uint32_t in_max_output,
 511                                                uint32_t in_flags)
 512 {
 513         struct tevent_req *req;
 514         struct smbd_smb2_ioctl_state *state;
 515         struct smb_request *smbreq;
 516         struct tevent_req *subreq;
 517
 518         req = tevent_req_create(mem_ctx, &state,
 519                                 struct smbd_smb2_ioctl_state);
 520         if (req == NULL) {
 521                 return NULL;
 522         }
 523         state->smb2req = smb2req;
 524         state->smbreq = NULL;
 525         state->fsp = fsp;
 526         state->in_input = in_input;
 527         state->in_max_output = in_max_output;
 528         state->out_output = data_blob_null;
 529
 530         DEBUG(10, ("smbd_smb2_ioctl: ctl_code[0x%08x] %s, %s\n",
 531                    (unsigned)in_ctl_code,
 532                    fsp ? fsp_str_dbg(fsp) : "<no handle>",
 533                    fsp_fnum_dbg(fsp)));
 534
 535         smbreq = smbd_smb2_fake_smb_request(smb2req);
 536         if (tevent_req_nomem(smbreq, req)) {
 537                 return tevent_req_post(req, ev);
 538         }
 539         state->smbreq = smbreq;
 540
 541         switch (in_ctl_code) {
 542         case 0x00060194: /* FSCTL_DFS_GET_REFERRALS */
 543         {
 544                 status = fsctl_dfs_get_refers(state, ev, state->smbreq->conn,
 545                                               &state->in_input,
 546                                               state->in_max_output,
 547                                               &state->out_output);
 548                 if (!tevent_req_nterror(req, status)) {
 549                         tevent_req_done(req);
 550                 }
 551                 return tevent_req_post(req, ev);
 552         }
 553         case 0x0011C017: /* FSCTL_PIPE_TRANSCEIVE */
 554
 555                 if (!IS_IPC(smbreq->conn)) {
 556                         tevent_req_nterror(req, NT_STATUS_NOT_SUPPORTED);
 557                         return tevent_req_post(req, ev);
 558                 }
 559
 560                 if (fsp == NULL) {
 561                         tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
 562                         return tevent_req_post(req, ev);
 563                 }
 564
 565                 if (!fsp_is_np(fsp)) {
 566                         tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
 567                         return tevent_req_post(req, ev);
 568                 }
 569
 570                 DEBUG(10,("smbd_smb2_ioctl_send: np_write_send of size %u\n",
 571                         (unsigned int)in_input.length ));
 572
 573                 subreq = np_write_send(state, ev,
 574                                        fsp->fake_file_handle,
 575                                        in_input.data,
 576                                        in_input.length);
 577                 if (tevent_req_nomem(subreq, req)) {
 578                         return tevent_req_post(req, ev);
 579                 }
 580                 tevent_req_set_callback(subreq,
 581                                         smbd_smb2_ioctl_pipe_write_done,
 582                                         req);
 583                 return req;
 584
 585         case FSCTL_VALIDATE_NEGOTIATE_INFO:
 586         {
 587                 status = fsctl_validate_neg_info(state, ev,
 588                                                  state->smbreq->sconn->conn,
 589                                                  &state->in_input,
 590                                                  state->in_max_output,
 591                                                  &state->out_output,
 592                                                  &state->disconnect);
 593                 if (!tevent_req_nterror(req, status)) {
 594                         tevent_req_done(req);
 595                 }
 596                 return tevent_req_post(req, ev);
 597         }
 598
 599         default: {
 600                 uint8_t *out_data = NULL;
 601                 uint32_t out_data_len = 0;
 602                 NTSTATUS status;
 603
 604                 if (fsp == NULL) {
 605                         tevent_req_nterror(req, NT_STATUS_FILE_CLOSED);
 606                         return tevent_req_post(req, ev);
 607                 }
 608
 609                 status = SMB_VFS_FSCTL(fsp,
 610                                        state,
 611                                        in_ctl_code,
 612                                        smbreq->flags2,
 613                                        in_input.data,
 614                                        in_input.length,
 615                                        &out_data,
 616                                        in_max_output,
 617                                        &out_data_len);
 618                 state->out_output = data_blob_const(out_data, out_data_len);
 619                 if (NT_STATUS_IS_OK(status)) {
 620                         tevent_req_done(req);
 621                         return tevent_req_post(req, ev);
 622                 }
 623
 624                 if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_SUPPORTED)) {
 625                         if (IS_IPC(smbreq->conn)) {
 626                                 status = NT_STATUS_FS_DRIVER_REQUIRED;
 627                         } else {
 628                                 status = NT_STATUS_INVALID_DEVICE_REQUEST;
 629                         }
 630                 }
 631
 632                 tevent_req_nterror(req, status);
 633                 return tevent_req_post(req, ev);
 634         }
 635         }
 636
 637         tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
 638         return tevent_req_post(req, ev);
 639 }
 640
 641 static void smbd_smb2_ioctl_pipe_write_done(struct tevent_req *subreq)
 642 {
 643         struct tevent_req *req = tevent_req_callback_data(subreq,
 644                                  struct tevent_req);
 645         struct smbd_smb2_ioctl_state *state = tevent_req_data(req,
 646                                               struct smbd_smb2_ioctl_state);
 647         NTSTATUS status;
 648         ssize_t nwritten = -1;
 649
 650         status = np_write_recv(subreq, &nwritten);
 651
 652         DEBUG(10,("smbd_smb2_ioctl_pipe_write_done: received %ld\n",
 653                 (long int)nwritten ));
 654
 655         TALLOC_FREE(subreq);
 656         if (!NT_STATUS_IS_OK(status)) {
 657                 NTSTATUS old = status;
 658                 status = nt_status_np_pipe(old);
 659                 tevent_req_nterror(req, status);
 660                 return;
 661         }
 662
 663         if (nwritten != state->in_input.length) {
 664                 tevent_req_nterror(req, NT_STATUS_PIPE_NOT_AVAILABLE);
 665                 return;
 666         }
 667
 668         state->out_output = data_blob_talloc(state, NULL, state->in_max_output);
 669         if (state->in_max_output > 0 &&
 670             tevent_req_nomem(state->out_output.data, req)) {
 671                 return;
 672         }
 673
 674         DEBUG(10,("smbd_smb2_ioctl_pipe_write_done: issuing np_read_send "
 675                 "of size %u\n",
 676                 (unsigned int)state->out_output.length ));
 677
 678         subreq = np_read_send(state->smbreq->conn,
 679                               state->smb2req->sconn->ev_ctx,
 680                               state->fsp->fake_file_handle,
 681                               state->out_output.data,
 682                               state->out_output.length);
 683         if (tevent_req_nomem(subreq, req)) {
 684                 return;
 685         }
 686         tevent_req_set_callback(subreq, smbd_smb2_ioctl_pipe_read_done, req);
 687 }
 688
 689 static void smbd_smb2_ioctl_pipe_read_done(struct tevent_req *subreq)
 690 {
 691         struct tevent_req *req = tevent_req_callback_data(subreq,
 692                                  struct tevent_req);
 693         struct smbd_smb2_ioctl_state *state = tevent_req_data(req,
 694                                               struct smbd_smb2_ioctl_state);
 695         NTSTATUS status;
 696         NTSTATUS old;
 697         ssize_t nread = -1;
 698         bool is_data_outstanding = false;
 699
 700         status = np_read_recv(subreq, &nread, &is_data_outstanding);
 701         TALLOC_FREE(subreq);
 702
 703         old = status;
 704         status = nt_status_np_pipe(old);
 705
 706         DEBUG(10,("smbd_smb2_ioctl_pipe_read_done: np_read_recv nread = %d "
 707                  "is_data_outstanding = %d, status = %s%s%s\n",
 708                 (int)nread,
 709                 (int)is_data_outstanding,
 710                 nt_errstr(old),
 711                 NT_STATUS_EQUAL(old, status)?"":" => ",
 712                 NT_STATUS_EQUAL(old, status)?"":nt_errstr(status)));
 713
 714         if (!NT_STATUS_IS_OK(status)) {
 715                 tevent_req_nterror(req, status);
 716                 return;
 717         }
 718
 719         state->out_output.length = nread;
 720
 721         if (is_data_outstanding) {
 722                 tevent_req_nterror(req, STATUS_BUFFER_OVERFLOW);
 723                 return;
 724         }
 725
 726         tevent_req_done(req);
 727 }
 728
 729 static NTSTATUS smbd_smb2_ioctl_recv(struct tevent_req *req,
 730                                      TALLOC_CTX *mem_ctx,
 731                                      DATA_BLOB *out_output,
 732                                      bool *disconnect)
 733 {
 734         NTSTATUS status = NT_STATUS_OK;
 735         struct smbd_smb2_ioctl_state *state = tevent_req_data(req,
 736                                               struct smbd_smb2_ioctl_state);
 737
 738         *disconnect = state->disconnect;
 739
 740         if (tevent_req_is_nterror(req, &status)) {
 741                 if (!NT_STATUS_EQUAL(status, STATUS_BUFFER_OVERFLOW)) {
 742                         tevent_req_received(req);
 743                         return status;
 744                 }
 745         }
 746
 747         *out_output = state->out_output;
 748         talloc_steal(mem_ctx, out_output->data);
 749
 750         tevent_req_received(req);
 751         return status;
 752 }