source3/smbd/smb2_ioctl_network_fs.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Core SMB2 server
   4
   5    Copyright (C) Stefan Metzmacher 2009
   6    Copyright (C) David Disseldorp 2012
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #include "includes.h"
  23 #include "smbd/smbd.h"
  24 #include "smbd/globals.h"
  25 #include "../libcli/smb/smb_common.h"
  26 #include "../libcli/security/security.h"
  27 #include "../lib/util/tevent_ntstatus.h"
  28 #include "include/ntioctl.h"
  29 #include "../librpc/ndr/libndr.h"
  30 #include "librpc/gen_ndr/ndr_ioctl.h"
  31 #include "smb2_ioctl_private.h"
  32 #include "../lib/tsocket/tsocket.h"
  33 #include "lib/messages_ctdb.h"
  34 #include "ctdbd_conn.h"
  35
  36 #undef DBGC_CLASS
  37 #define DBGC_CLASS DBGC_SMB2
  38
  39 static void copychunk_pack_limits(struct srv_copychunk_rsp *cc_rsp)
  40 {
  41         cc_rsp->chunks_written = COPYCHUNK_MAX_CHUNKS;
  42         cc_rsp->chunk_bytes_written = COPYCHUNK_MAX_CHUNK_LEN;
  43         cc_rsp->total_bytes_written = COPYCHUNK_MAX_TOTAL_LEN;
  44 }
  45
  46 static NTSTATUS copychunk_check_limits(struct srv_copychunk_copy *cc_copy)
  47 {
  48         uint32_t i;
  49         uint32_t total_len = 0;
  50
  51         /*
  52          * [MS-SMB2] 3.3.5.15.6 Handling a Server-Side Data Copy Request
  53          * Send and invalid parameter response if:
  54          * - The ChunkCount value is greater than
  55          *   ServerSideCopyMaxNumberofChunks
  56          */
  57         if (cc_copy->chunk_count > COPYCHUNK_MAX_CHUNKS) {
  58                 return NT_STATUS_INVALID_PARAMETER;
  59         }
  60
  61         for (i = 0; i < cc_copy->chunk_count; i++) {
  62                 /*
  63                  * - The Length value in a single chunk is greater than
  64                  *   ServerSideCopyMaxChunkSize or equal to zero.
  65                  */
  66                 if ((cc_copy->chunks[i].length == 0)
  67                  || (cc_copy->chunks[i].length > COPYCHUNK_MAX_CHUNK_LEN)) {
  68                         return NT_STATUS_INVALID_PARAMETER;
  69                 }
  70                 total_len += cc_copy->chunks[i].length;
  71         }
  72         /*
  73          * - Sum of Lengths in all chunks is greater than
  74          *   ServerSideCopyMaxDataSize
  75          */
  76         if (total_len > COPYCHUNK_MAX_TOTAL_LEN) {
  77                 return NT_STATUS_INVALID_PARAMETER;
  78         }
  79
  80         return NT_STATUS_OK;
  81 }
  82
  83 struct fsctl_srv_copychunk_state {
  84         struct tevent_context *ev;
  85         struct connection_struct *conn;
  86         struct srv_copychunk_copy cc_copy;
  87         uint32_t current_chunk;
  88         NTSTATUS status;
  89         off_t total_written;
  90         uint32_t ctl_code;
  91         DATA_BLOB token;
  92         struct files_struct *src_fsp;
  93         struct files_struct *dst_fsp;
  94         enum {
  95                 COPYCHUNK_OUT_EMPTY = 0,
  96                 COPYCHUNK_OUT_LIMITS,
  97                 COPYCHUNK_OUT_RSP,
  98         } out_data;
  99 };
 100 static void fsctl_srv_copychunk_vfs_done(struct tevent_req *subreq);
 101
 102 static NTSTATUS fsctl_srv_copychunk_loop(struct tevent_req *req);
 103
 104 static struct tevent_req *fsctl_srv_copychunk_send(TALLOC_CTX *mem_ctx,
 105                                                    struct tevent_context *ev,
 106                                                    uint32_t ctl_code,
 107                                                    struct files_struct *dst_fsp,
 108                                                    DATA_BLOB *in_input,
 109                                                    size_t in_max_output,
 110                                                    struct smbd_smb2_request *smb2req)
 111 {
 112         struct tevent_req *req = NULL;
 113         struct fsctl_srv_copychunk_state *state = NULL;
 114         enum ndr_err_code ndr_ret;
 115         NTSTATUS status;
 116
 117         /* handler for both copy-chunk variants */
 118         SMB_ASSERT((ctl_code == FSCTL_SRV_COPYCHUNK)
 119                 || (ctl_code == FSCTL_SRV_COPYCHUNK_WRITE));
 120
 121         req = tevent_req_create(mem_ctx, &state,
 122                                 struct fsctl_srv_copychunk_state);
 123         if (req == NULL) {
 124                 return NULL;
 125         }
 126         *state = (struct fsctl_srv_copychunk_state) {
 127                 .conn = dst_fsp->conn,
 128                 .ev = ev,
 129                 .ctl_code = ctl_code,
 130                 .dst_fsp = dst_fsp,
 131         };
 132
 133         if (in_max_output < sizeof(struct srv_copychunk_rsp)) {
 134                 DEBUG(3, ("max output %d not large enough to hold copy chunk "
 135                           "response %lu\n", (int)in_max_output,
 136                           (unsigned long)sizeof(struct srv_copychunk_rsp)));
 137                 state->status = NT_STATUS_INVALID_PARAMETER;
 138                 tevent_req_nterror(req, state->status);
 139                 return tevent_req_post(req, ev);
 140         }
 141
 142         ndr_ret = ndr_pull_struct_blob(in_input, mem_ctx, &state->cc_copy,
 143                         (ndr_pull_flags_fn_t)ndr_pull_srv_copychunk_copy);
 144         if (ndr_ret != NDR_ERR_SUCCESS) {
 145                 DEBUG(0, ("failed to unmarshall copy chunk req\n"));
 146                 state->status = NT_STATUS_INVALID_PARAMETER;
 147                 tevent_req_nterror(req, state->status);
 148                 return tevent_req_post(req, ev);
 149         }
 150
 151         state->token = data_blob_const(state->cc_copy.source_key,
 152                                        sizeof(state->cc_copy.source_key));
 153
 154         state->status = copychunk_check_limits(&state->cc_copy);
 155         if (!NT_STATUS_IS_OK(state->status)) {
 156                 DEBUG(3, ("copy chunk req exceeds limits\n"));
 157                 state->out_data = COPYCHUNK_OUT_LIMITS;
 158                 tevent_req_nterror(req, state->status);
 159                 return tevent_req_post(req, ev);
 160         }
 161
 162         /* any errors from here onwards should carry copychunk response data */
 163         state->out_data = COPYCHUNK_OUT_RSP;
 164
 165         status = fsctl_srv_copychunk_loop(req);
 166         if (tevent_req_nterror(req, status)) {
 167                 return tevent_req_post(req, ev);
 168         }
 169
 170         return req;
 171 }
 172
 173 static NTSTATUS fsctl_srv_copychunk_loop(struct tevent_req *req)
 174 {
 175         struct fsctl_srv_copychunk_state *state = tevent_req_data(
 176                 req, struct fsctl_srv_copychunk_state);
 177         struct tevent_req *subreq = NULL;
 178         uint32_t length = 0;
 179         off_t source_off = 0;
 180         off_t target_off = 0;
 181
 182         /*
 183          * chunk_count can be 0 which must either just do nothing returning
 184          * success saying number of copied chunks is 0 (verified against
 185          * Windows).
 186          *
 187          * Or it can be a special macOS copyfile request, so we send this into
 188          * the VFS, vfs_fruit if loaded implements the macOS copyile semantics.
 189          */
 190         if (state->cc_copy.chunk_count > 0) {
 191                 struct srv_copychunk *chunk = NULL;
 192
 193                 chunk = &state->cc_copy.chunks[state->current_chunk];
 194                 length = chunk->length;
 195                 source_off = chunk->source_off;
 196                 target_off = chunk->target_off;
 197         }
 198
 199         subreq = SMB_VFS_OFFLOAD_WRITE_SEND(state->dst_fsp->conn,
 200                                          state,
 201                                          state->ev,
 202                                          state->ctl_code,
 203                                          &state->token,
 204                                          source_off,
 205                                          state->dst_fsp,
 206                                          target_off,
 207                                          length);
 208         if (tevent_req_nomem(subreq, req)) {
 209                 return NT_STATUS_NO_MEMORY;
 210         }
 211         tevent_req_set_callback(subreq, fsctl_srv_copychunk_vfs_done, req);
 212
 213         return NT_STATUS_OK;
 214 }
 215
 216 static void fsctl_srv_copychunk_vfs_done(struct tevent_req *subreq)
 217 {
 218         struct tevent_req *req = tevent_req_callback_data(
 219                 subreq, struct tevent_req);
 220         struct fsctl_srv_copychunk_state *state = tevent_req_data(
 221                 req, struct fsctl_srv_copychunk_state);
 222         off_t chunk_nwritten;
 223         NTSTATUS status;
 224
 225         status = SMB_VFS_OFFLOAD_WRITE_RECV(state->conn, subreq,
 226                                          &chunk_nwritten);
 227         TALLOC_FREE(subreq);
 228         if (!NT_STATUS_IS_OK(status)) {
 229                 DBG_ERR("copy chunk failed [%s] chunk [%u] of [%u]\n",
 230                         nt_errstr(status),
 231                         (unsigned int)state->current_chunk,
 232                         (unsigned int)state->cc_copy.chunk_count);
 233                 tevent_req_nterror(req, status);
 234                 return;
 235         }
 236
 237         DBG_DEBUG("good copy chunk [%u] of [%u]\n",
 238                   (unsigned int)state->current_chunk,
 239                   (unsigned int)state->cc_copy.chunk_count);
 240         state->total_written += chunk_nwritten;
 241
 242         if (state->cc_copy.chunk_count == 0) {
 243                 /*
 244                  * This must not produce an error but just return a chunk count
 245                  * of 0 in the response.
 246                  */
 247                 tevent_req_done(req);
 248                 return;
 249         }
 250
 251         state->current_chunk++;
 252         if (state->current_chunk == state->cc_copy.chunk_count) {
 253                 tevent_req_done(req);
 254                 return;
 255         }
 256
 257         status = fsctl_srv_copychunk_loop(req);
 258         if (tevent_req_nterror(req, status)) {
 259                 return;
 260         }
 261 }
 262
 263 static NTSTATUS fsctl_srv_copychunk_recv(struct tevent_req *req,
 264                                          struct srv_copychunk_rsp *cc_rsp,
 265                                          bool *pack_rsp)
 266 {
 267         struct fsctl_srv_copychunk_state *state = tevent_req_data(req,
 268                                         struct fsctl_srv_copychunk_state);
 269         NTSTATUS status;
 270
 271         switch (state->out_data) {
 272         case COPYCHUNK_OUT_EMPTY:
 273                 *pack_rsp = false;
 274                 break;
 275         case COPYCHUNK_OUT_LIMITS:
 276                 /* 2.2.32.1 - send back our maximum transfer size limits */
 277                 copychunk_pack_limits(cc_rsp);
 278                 *pack_rsp = true;
 279                 break;
 280         case COPYCHUNK_OUT_RSP:
 281                 cc_rsp->chunks_written = state->current_chunk;
 282                 cc_rsp->chunk_bytes_written = 0;
 283                 cc_rsp->total_bytes_written = state->total_written;
 284                 *pack_rsp = true;
 285                 break;
 286         default:        /* not reached */
 287                 assert(1);
 288                 break;
 289         }
 290         status = tevent_req_simple_recv_ntstatus(req);
 291         return status;
 292 }
 293
 294 static NTSTATUS fsctl_network_iface_info(TALLOC_CTX *mem_ctx,
 295                                          struct tevent_context *ev,
 296                                          struct smbXsrv_connection *xconn,
 297                                          DATA_BLOB *in_input,
 298                                          uint32_t in_max_output,
 299                                          DATA_BLOB *out_output)
 300 {
 301         struct fsctl_net_iface_info *array = NULL;
 302         struct fsctl_net_iface_info *first = NULL;
 303         struct fsctl_net_iface_info *last = NULL;
 304         size_t i;
 305         size_t num_ifaces = iface_count();
 306         enum ndr_err_code ndr_err;
 307         struct ctdb_public_ip_list_old *ips = NULL;
 308
 309         if (in_input->length != 0) {
 310                 return NT_STATUS_INVALID_PARAMETER;
 311         }
 312
 313         *out_output = data_blob_null;
 314
 315         if (lp_clustering()) {
 316                 int ret;
 317
 318                 ret = ctdbd_control_get_public_ips(messaging_ctdb_connection(),
 319                                                    0, /* flags */
 320                                                    mem_ctx,
 321                                                    &ips);
 322                 if (ret != 0) {
 323                         return NT_STATUS_INTERNAL_ERROR;
 324                 }
 325         }
 326
 327         array = talloc_zero_array(mem_ctx,
 328                                   struct fsctl_net_iface_info,
 329                                   num_ifaces);
 330         if (array == NULL) {
 331                 return NT_STATUS_NO_MEMORY;
 332         }
 333
 334         for (i=0; i < num_ifaces; i++) {
 335                 struct fsctl_net_iface_info *cur = &array[i];
 336                 const struct interface *iface = get_interface(i);
 337                 const struct sockaddr_storage *ifss = &iface->ip;
 338                 const void *ifptr = ifss;
 339                 const struct sockaddr *ifsa = (const struct sockaddr *)ifptr;
 340                 struct tsocket_address *a = NULL;
 341                 char *addr;
 342                 bool ok;
 343                 int ret;
 344
 345                 ret = tsocket_address_bsd_from_sockaddr(array,
 346                                         ifsa, sizeof(struct sockaddr_storage),
 347                                         &a);
 348                 if (ret != 0) {
 349                         return map_nt_error_from_unix_common(errno);
 350                 }
 351
 352                 ok = tsocket_address_is_inet(a, "ip");
 353                 if (!ok) {
 354                         continue;
 355                 }
 356
 357                 addr = tsocket_address_inet_addr_string(a, array);
 358                 if (addr == NULL) {
 359                         TALLOC_FREE(array);
 360                         return NT_STATUS_NO_MEMORY;
 361                 }
 362
 363                 if (ips != NULL) {
 364                         bool is_public_ip;
 365
 366                         is_public_ip = ctdbd_find_in_public_ips(ips, ifss);
 367                         if (is_public_ip) {
 368                                 DBG_DEBUG("Interface [%s] - "
 369                                           "has public ip - "
 370                                           "skipping address [%s].\n",
 371                                           iface->name, addr);
 372                                 continue;
 373                         }
 374                 }
 375
 376                 cur->ifindex = iface->if_index;
 377                 if (cur->ifindex == 0) {
 378                         /*
 379                          * Did not get interface index from kernel,
 380                          * nor from the config. ==> Apply a common
 381                          * default value for these cases.
 382                          */
 383                         cur->ifindex = UINT32_MAX;
 384                 }
 385                 cur->capability = iface->capability;
 386                 cur->linkspeed = iface->linkspeed;
 387                 if (cur->linkspeed == 0) {
 388                         DBG_DEBUG("Link speed 0 on interface [%s] - skipping "
 389                                   "address [%s].\n", iface->name, addr);
 390                         continue;
 391                 }
 392
 393                 ok = tsocket_address_is_inet(a, "ipv4");
 394                 if (ok) {
 395                         cur->sockaddr.family = FSCTL_NET_IFACE_AF_INET;
 396                         cur->sockaddr.saddr.saddr_in.ipv4 = addr;
 397                 }
 398                 ok = tsocket_address_is_inet(a, "ipv6");
 399                 if (ok) {
 400                         cur->sockaddr.family = FSCTL_NET_IFACE_AF_INET6;
 401                         cur->sockaddr.saddr.saddr_in6.ipv6 = addr;
 402                 }
 403
 404                 if (first == NULL) {
 405                         first = cur;
 406                 }
 407                 if (last != NULL) {
 408                         last->next = cur;
 409                 }
 410                 last = cur;
 411         }
 412
 413         if (first == NULL) {
 414                 TALLOC_FREE(array);
 415                 return NT_STATUS_OK;
 416         }
 417
 418         if (DEBUGLEVEL >= 10) {
 419                 NDR_PRINT_DEBUG(fsctl_net_iface_info, first);
 420         }
 421
 422         ndr_err = ndr_push_struct_blob(out_output, mem_ctx, first,
 423                         (ndr_push_flags_fn_t)ndr_push_fsctl_net_iface_info);
 424         TALLOC_FREE(array);
 425         if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 426                 return ndr_map_error2ntstatus(ndr_err);
 427         }
 428
 429         return NT_STATUS_OK;
 430 }
 431
 432 static NTSTATUS fsctl_validate_neg_info(TALLOC_CTX *mem_ctx,
 433                                         struct tevent_context *ev,
 434                                         struct smbXsrv_connection *conn,
 435                                         DATA_BLOB *in_input,
 436                                         uint32_t in_max_output,
 437                                         DATA_BLOB *out_output,
 438                                         bool *disconnect)
 439 {
 440         uint32_t in_capabilities;
 441         DATA_BLOB in_guid_blob;
 442         struct GUID in_guid;
 443         uint16_t in_security_mode;
 444         uint16_t in_num_dialects;
 445         uint16_t dialect;
 446         struct GUID_ndr_buf out_guid_buf = { .buf = {0}, };
 447         NTSTATUS status;
 448         enum protocol_types protocol = PROTOCOL_NONE;
 449
 450         if (lp_server_max_protocol() <= PROTOCOL_SMB2_02) {
 451                 /*
 452                  * With SMB 2.02 we didn't get the
 453                  * capabitities, client guid, security mode
 454                  * and dialects the client would have offered.
 455                  *
 456                  * So we behave compatible with a true
 457                  * SMB 2.02 server and return NT_STATUS_FILE_CLOSED.
 458                  *
 459                  * As SMB >= 2.10 offers the two phase SMB2 Negotiate
 460                  * we keep supporting FSCTL_VALIDATE_NEGOTIATE_INFO
 461                  * starting with SMB 2.10, while Windows only supports
 462                  * it starting with SMB > 2.10.
 463                  */
 464                 return NT_STATUS_FILE_CLOSED;
 465         }
 466
 467         if (in_input->length < 0x18) {
 468                 return NT_STATUS_INVALID_PARAMETER;
 469         }
 470
 471         in_capabilities = IVAL(in_input->data, 0x00);
 472         in_guid_blob = data_blob_const(in_input->data + 0x04, 16);
 473         in_security_mode = SVAL(in_input->data, 0x14);
 474         in_num_dialects = SVAL(in_input->data, 0x16);
 475
 476         if (in_input->length < (0x18 + in_num_dialects*2)) {
 477                 return NT_STATUS_INVALID_PARAMETER;
 478         }
 479
 480         if (in_max_output < 0x18) {
 481                 return NT_STATUS_BUFFER_TOO_SMALL;
 482         }
 483
 484         status = GUID_from_ndr_blob(&in_guid_blob, &in_guid);
 485         if (!NT_STATUS_IS_OK(status)) {
 486                 return status;
 487         }
 488
 489         /*
 490          * From: [MS-SMB2]
 491          * 3.3.5.15.12 Handling a Validate Negotiate Info Request
 492          *
 493          * The server MUST determine the greatest common dialect
 494          * between the dialects it implements and the Dialects array
 495          * of the VALIDATE_NEGOTIATE_INFO request. If no dialect is
 496          * matched, or if the value is not equal to Connection.Dialect,
 497          * the server MUST terminate the transport connection
 498          * and free the Connection object.
 499          */
 500         protocol = smbd_smb2_protocol_dialect_match(in_input->data + 0x18,
 501                                                     in_num_dialects,
 502                                                     &dialect);
 503         if (conn->protocol != protocol) {
 504                 *disconnect = true;
 505                 return NT_STATUS_ACCESS_DENIED;
 506         }
 507
 508         if (!GUID_equal(&in_guid, &conn->smb2.client.guid)) {
 509                 *disconnect = true;
 510                 return NT_STATUS_ACCESS_DENIED;
 511         }
 512
 513         if (in_security_mode != conn->smb2.client.security_mode) {
 514                 *disconnect = true;
 515                 return NT_STATUS_ACCESS_DENIED;
 516         }
 517
 518         if (in_capabilities != conn->smb2.client.capabilities) {
 519                 *disconnect = true;
 520                 return NT_STATUS_ACCESS_DENIED;
 521         }
 522
 523         status = GUID_to_ndr_buf(&conn->smb2.server.guid, &out_guid_buf);
 524         if (!NT_STATUS_IS_OK(status)) {
 525                 return status;
 526         }
 527
 528         *out_output = data_blob_talloc(mem_ctx, NULL, 0x18);
 529         if (out_output->data == NULL) {
 530                 return NT_STATUS_NO_MEMORY;
 531         }
 532
 533         SIVAL(out_output->data, 0x00, conn->smb2.server.capabilities);
 534         memcpy(out_output->data+0x04, out_guid_buf.buf, 16);
 535         SSVAL(out_output->data, 0x14, conn->smb2.server.security_mode);
 536         SSVAL(out_output->data, 0x16, conn->smb2.server.dialect);
 537
 538         return NT_STATUS_OK;
 539 }
 540
 541 static void smb2_ioctl_network_fs_copychunk_done(struct tevent_req *subreq);
 542 static void smb2_ioctl_network_fs_offload_read_done(struct tevent_req *subreq);
 543
 544 struct tevent_req *smb2_ioctl_network_fs(uint32_t ctl_code,
 545                                          struct tevent_context *ev,
 546                                          struct tevent_req *req,
 547                                          struct smbd_smb2_ioctl_state *state)
 548 {
 549         struct tevent_req *subreq;
 550         NTSTATUS status;
 551
 552         switch (ctl_code) {
 553         /*
 554          * [MS-SMB2] 2.2.31
 555          * FSCTL_SRV_COPYCHUNK is issued when a handle has
 556          * FILE_READ_DATA and FILE_WRITE_DATA access to the file;
 557          * FSCTL_SRV_COPYCHUNK_WRITE is issued when a handle only has
 558          * FILE_WRITE_DATA access.
 559          */
 560         case FSCTL_SRV_COPYCHUNK_WRITE: /* FALL THROUGH */
 561         case FSCTL_SRV_COPYCHUNK:
 562                 subreq = fsctl_srv_copychunk_send(state, ev,
 563                                                   ctl_code,
 564                                                   state->fsp,
 565                                                   &state->in_input,
 566                                                   state->in_max_output,
 567                                                   state->smb2req);
 568                 if (tevent_req_nomem(subreq, req)) {
 569                         return tevent_req_post(req, ev);
 570                 }
 571                 tevent_req_set_callback(subreq,
 572                                         smb2_ioctl_network_fs_copychunk_done,
 573                                         req);
 574                 return req;
 575                 break;
 576         case FSCTL_QUERY_NETWORK_INTERFACE_INFO:
 577                 if (!state->smbreq->xconn->client->server_multi_channel_enabled)
 578                 {
 579                         if (IS_IPC(state->smbreq->conn)) {
 580                                 status = NT_STATUS_FS_DRIVER_REQUIRED;
 581                         } else {
 582                                 status = NT_STATUS_INVALID_DEVICE_REQUEST;
 583                         }
 584
 585                         tevent_req_nterror(req, status);
 586                         return tevent_req_post(req, ev);
 587                 }
 588
 589                 status = fsctl_network_iface_info(state, ev,
 590                                                   state->smbreq->xconn,
 591                                                   &state->in_input,
 592                                                   state->in_max_output,
 593                                                   &state->out_output);
 594                 if (!tevent_req_nterror(req, status)) {
 595                         tevent_req_done(req);
 596                 }
 597                 return tevent_req_post(req, ev);
 598                 break;
 599         case FSCTL_VALIDATE_NEGOTIATE_INFO:
 600                 status = fsctl_validate_neg_info(state, ev,
 601                                                  state->smbreq->xconn,
 602                                                  &state->in_input,
 603                                                  state->in_max_output,
 604                                                  &state->out_output,
 605                                                  &state->disconnect);
 606                 if (!tevent_req_nterror(req, status)) {
 607                         tevent_req_done(req);
 608                 }
 609                 return tevent_req_post(req, ev);
 610                 break;
 611         case FSCTL_SRV_REQUEST_RESUME_KEY:
 612                 subreq = SMB_VFS_OFFLOAD_READ_SEND(state,
 613                                                    ev,
 614                                                    state->fsp,
 615                                                    FSCTL_SRV_REQUEST_RESUME_KEY,
 616                                                    0, 0, 0);
 617                 if (tevent_req_nomem(subreq, req)) {
 618                         return tevent_req_post(req, ev);
 619                 }
 620                 tevent_req_set_callback(
 621                         subreq, smb2_ioctl_network_fs_offload_read_done, req);
 622                 return req;
 623
 624         default: {
 625                 uint8_t *out_data = NULL;
 626                 uint32_t out_data_len = 0;
 627
 628                 if (state->fsp == NULL) {
 629                         status = NT_STATUS_NOT_SUPPORTED;
 630                 } else {
 631                         status = SMB_VFS_FSCTL(state->fsp,
 632                                                state,
 633                                                ctl_code,
 634                                                state->smbreq->flags2,
 635                                                state->in_input.data,
 636                                                state->in_input.length,
 637                                                &out_data,
 638                                                state->in_max_output,
 639                                                &out_data_len);
 640                         state->out_output = data_blob_const(out_data, out_data_len);
 641                         if (NT_STATUS_IS_OK(status)) {
 642                                 tevent_req_done(req);
 643                                 return tevent_req_post(req, ev);
 644                         }
 645                 }
 646
 647                 if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_SUPPORTED)) {
 648                         if (IS_IPC(state->smbreq->conn)) {
 649                                 status = NT_STATUS_FS_DRIVER_REQUIRED;
 650                         } else {
 651                                 status = NT_STATUS_INVALID_DEVICE_REQUEST;
 652                         }
 653                 }
 654
 655                 tevent_req_nterror(req, status);
 656                 return tevent_req_post(req, ev);
 657                 break;
 658         }
 659         }
 660
 661         tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
 662         return tevent_req_post(req, ev);
 663 }
 664
 665 static void smb2_ioctl_network_fs_copychunk_done(struct tevent_req *subreq)
 666 {
 667         struct tevent_req *req = tevent_req_callback_data(subreq,
 668                                                           struct tevent_req);
 669         struct smbd_smb2_ioctl_state *ioctl_state = tevent_req_data(req,
 670                                                 struct smbd_smb2_ioctl_state);
 671         struct srv_copychunk_rsp cc_rsp;
 672         NTSTATUS status;
 673         bool pack_rsp = false;
 674
 675         ZERO_STRUCT(cc_rsp);
 676         status = fsctl_srv_copychunk_recv(subreq, &cc_rsp, &pack_rsp);
 677         TALLOC_FREE(subreq);
 678         if (pack_rsp == true) {
 679                 enum ndr_err_code ndr_ret;
 680                 ndr_ret = ndr_push_struct_blob(&ioctl_state->out_output,
 681                                                ioctl_state,
 682                                                &cc_rsp,
 683                                 (ndr_push_flags_fn_t)ndr_push_srv_copychunk_rsp);
 684                 if (ndr_ret != NDR_ERR_SUCCESS) {
 685                         status = NT_STATUS_INTERNAL_ERROR;
 686                 }
 687         }
 688
 689         if (!tevent_req_nterror(req, status)) {
 690                 tevent_req_done(req);
 691         }
 692 }
 693
 694 static void smb2_ioctl_network_fs_offload_read_done(struct tevent_req *subreq)
 695 {
 696         struct tevent_req *req = tevent_req_callback_data(
 697                 subreq, struct tevent_req);
 698         struct smbd_smb2_ioctl_state *state = tevent_req_data(
 699                 req, struct smbd_smb2_ioctl_state);
 700         struct req_resume_key_rsp rkey_rsp;
 701         enum ndr_err_code ndr_ret;
 702         DATA_BLOB token;
 703         NTSTATUS status;
 704
 705         status = SMB_VFS_OFFLOAD_READ_RECV(subreq,
 706                                            state->fsp->conn,
 707                                            state,
 708                                            &token);
 709         TALLOC_FREE(subreq);
 710         if (tevent_req_nterror(req, status)) {
 711                 return;
 712         }
 713
 714         if (token.length != sizeof(rkey_rsp.resume_key)) {
 715                 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
 716                 return;
 717         }
 718
 719         ZERO_STRUCT(rkey_rsp);
 720         memcpy(rkey_rsp.resume_key, token.data, token.length);
 721
 722         ndr_ret = ndr_push_struct_blob(&state->out_output, state, &rkey_rsp,
 723                         (ndr_push_flags_fn_t)ndr_push_req_resume_key_rsp);
 724         if (ndr_ret != NDR_ERR_SUCCESS) {
 725                 tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
 726                 return;
 727         }
 728
 729         tevent_req_done(req);
 730         return;
 731 }