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 "../lib/ccan/build_assert/build_assert.h"
  29 #include "include/ntioctl.h"
  30 #include "../librpc/ndr/libndr.h"
  31 #include "librpc/gen_ndr/ndr_ioctl.h"
  32 #include "smb2_ioctl_private.h"
  33
  34 #define COPYCHUNK_MAX_CHUNKS    256             /* 2k8r2 & win8 = 256 */
  35 #define COPYCHUNK_MAX_CHUNK_LEN 1048576         /* 2k8r2 & win8 = 1048576 */
  36 #define COPYCHUNK_MAX_TOTAL_LEN 16777216        /* 2k8r2 & win8 = 16777216 */
  37 static void copychunk_pack_limits(struct srv_copychunk_rsp *cc_rsp)
  38 {
  39         cc_rsp->chunks_written = COPYCHUNK_MAX_CHUNKS;
  40         cc_rsp->chunk_bytes_written = COPYCHUNK_MAX_CHUNK_LEN;
  41         cc_rsp->total_bytes_written = COPYCHUNK_MAX_TOTAL_LEN;
  42 }
  43
  44 static NTSTATUS copychunk_check_limits(struct srv_copychunk_copy *cc_copy)
  45 {
  46         uint32_t i;
  47         uint32_t total_len = 0;
  48
  49         if (cc_copy->chunk_count > COPYCHUNK_MAX_CHUNKS) {
  50                 return NT_STATUS_INVALID_PARAMETER;
  51         }
  52
  53         for (i = 0; i < cc_copy->chunk_count; i++) {
  54                 if (cc_copy->chunks[i].length > COPYCHUNK_MAX_CHUNK_LEN) {
  55                         return NT_STATUS_INVALID_PARAMETER;
  56                 }
  57                 total_len += cc_copy->chunks[i].length;
  58         }
  59         if (total_len > COPYCHUNK_MAX_TOTAL_LEN) {
  60                 return NT_STATUS_INVALID_PARAMETER;
  61         }
  62
  63         return NT_STATUS_OK;
  64 }
  65
  66 static void copychunk_unlock_all(struct files_struct *src_fsp,
  67                                  struct files_struct *dst_fsp,
  68                                  struct lock_struct *rd_locks,
  69                                  struct lock_struct *wr_locks,
  70                                  uint32_t num_locks)
  71 {
  72
  73         uint32_t i;
  74
  75         for (i = 0; i < num_locks; i++) {
  76                 SMB_VFS_STRICT_UNLOCK(src_fsp->conn, src_fsp, &rd_locks[i]);
  77                 SMB_VFS_STRICT_UNLOCK(dst_fsp->conn, dst_fsp, &wr_locks[i]);
  78         }
  79 }
  80
  81 /* request read and write locks for each chunk */
  82 static NTSTATUS copychunk_lock_all(TALLOC_CTX *mem_ctx,
  83                                    struct srv_copychunk_copy *cc_copy,
  84                                    struct files_struct *src_fsp,
  85                                    struct files_struct *dst_fsp,
  86                                    struct lock_struct **rd_locks,
  87                                    struct lock_struct **wr_locks,
  88                                    uint32_t *num_locks)
  89 {
  90         NTSTATUS status;
  91         uint32_t i;
  92         struct lock_struct *rlocks;
  93         struct lock_struct *wlocks;
  94
  95         rlocks = talloc_array(mem_ctx, struct lock_struct,
  96                               cc_copy->chunk_count);
  97         if (rlocks == NULL) {
  98                 status = NT_STATUS_NO_MEMORY;
  99                 goto err_out;
 100         }
 101
 102         wlocks = talloc_array(mem_ctx, struct lock_struct,
 103                               cc_copy->chunk_count);
 104         if (wlocks == NULL) {
 105                 status = NT_STATUS_NO_MEMORY;
 106                 goto err_rlocks_free;
 107         }
 108
 109         for (i = 0; i < cc_copy->chunk_count; i++) {
 110                 init_strict_lock_struct(src_fsp,
 111                                         src_fsp->op->global->open_persistent_id,
 112                                         cc_copy->chunks[i].source_off,
 113                                         cc_copy->chunks[i].length,
 114                                         READ_LOCK,
 115                                         &rlocks[i]);
 116                 init_strict_lock_struct(dst_fsp,
 117                                         dst_fsp->op->global->open_persistent_id,
 118                                         cc_copy->chunks[i].target_off,
 119                                         cc_copy->chunks[i].length,
 120                                         WRITE_LOCK,
 121                                         &wlocks[i]);
 122
 123                 if (!SMB_VFS_STRICT_LOCK(src_fsp->conn, src_fsp, &rlocks[i])) {
 124                         status = NT_STATUS_FILE_LOCK_CONFLICT;
 125                         goto err_unlock;
 126                 }
 127                 if (!SMB_VFS_STRICT_LOCK(dst_fsp->conn, dst_fsp, &wlocks[i])) {
 128                         /* unlock last rlock, otherwise missed by cleanup */
 129                         SMB_VFS_STRICT_UNLOCK(src_fsp->conn, src_fsp,
 130                                               &rlocks[i]);
 131                         status = NT_STATUS_FILE_LOCK_CONFLICT;
 132                         goto err_unlock;
 133                 }
 134         }
 135
 136         *rd_locks = rlocks;
 137         *wr_locks = wlocks;
 138         *num_locks = i;
 139
 140         return NT_STATUS_OK;
 141
 142 err_unlock:
 143         if (i > 0) {
 144                 /* cleanup all locks successfully issued so far */
 145                 copychunk_unlock_all(src_fsp, dst_fsp, rlocks, wlocks, i);
 146         }
 147         talloc_free(wlocks);
 148 err_rlocks_free:
 149         talloc_free(rlocks);
 150 err_out:
 151         return status;
 152 }
 153
 154 struct fsctl_srv_copychunk_state {
 155         struct connection_struct *conn;
 156         uint32_t dispatch_count;
 157         uint32_t recv_count;
 158         uint32_t bad_recv_count;
 159         NTSTATUS status;
 160         off_t total_written;
 161         struct files_struct *src_fsp;
 162         struct files_struct *dst_fsp;
 163         struct lock_struct *wlocks;
 164         struct lock_struct *rlocks;
 165         uint32_t num_locks;
 166         enum {
 167                 COPYCHUNK_OUT_EMPTY = 0,
 168                 COPYCHUNK_OUT_LIMITS,
 169                 COPYCHUNK_OUT_RSP,
 170         } out_data;
 171 };
 172 static void fsctl_srv_copychunk_vfs_done(struct tevent_req *subreq);
 173
 174 static struct tevent_req *fsctl_srv_copychunk_send(TALLOC_CTX *mem_ctx,
 175                                                    struct tevent_context *ev,
 176                                                    struct files_struct *dst_fsp,
 177                                                    DATA_BLOB *in_input,
 178                                                    struct smbd_smb2_request *smb2req)
 179 {
 180         struct tevent_req *req;
 181         struct srv_copychunk_copy cc_copy;
 182         enum ndr_err_code ndr_ret;
 183         uint64_t src_persistent_h;
 184         uint64_t src_volatile_h;
 185         int i;
 186         struct srv_copychunk *chunk;
 187         struct fsctl_srv_copychunk_state *state;
 188
 189         req = tevent_req_create(mem_ctx, &state,
 190                                 struct fsctl_srv_copychunk_state);
 191         if (req == NULL) {
 192                 return NULL;
 193         }
 194         state->conn = dst_fsp->conn;
 195         ndr_ret = ndr_pull_struct_blob(in_input, mem_ctx, &cc_copy,
 196                         (ndr_pull_flags_fn_t)ndr_pull_srv_copychunk_copy);
 197         if (ndr_ret != NDR_ERR_SUCCESS) {
 198                 DEBUG(0, ("failed to unmarshall copy chunk req\n"));
 199                 state->status = NT_STATUS_INVALID_PARAMETER;
 200                 tevent_req_nterror(req, state->status);
 201                 return tevent_req_post(req, ev);
 202         }
 203
 204         /* persistent/volatile keys sent as the resume key */
 205         src_persistent_h = BVAL(cc_copy.source_key, 0);
 206         src_volatile_h = BVAL(cc_copy.source_key, 8);
 207         state->src_fsp = file_fsp_get(smb2req, src_persistent_h, src_volatile_h);
 208         if (state->src_fsp == NULL) {
 209                 DEBUG(3, ("invalid resume key in copy chunk req\n"));
 210                 state->status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
 211                 tevent_req_nterror(req, state->status);
 212                 return tevent_req_post(req, ev);
 213         }
 214
 215         state->dst_fsp = dst_fsp;
 216         /*
 217          * [MS-SMB2] 3.3.5.15.6 Handling a Server-Side Data Copy Request
 218          * If Open.GrantedAccess of the destination file does not
 219          * include FILE_WRITE_DATA, then the request MUST be failed with
 220          * STATUS_ACCESS_DENIED. If Open.GrantedAccess of the
 221          * destination file does not include FILE_READ_DATA access and
 222          * the CtlCode is FSCTL_SRV_COPYCHUNK, then the request MUST be
 223          * failed with STATUS_ACCESS_DENIED.
 224          */
 225         if (!CHECK_WRITE(state->dst_fsp)) {
 226                 state->status = NT_STATUS_ACCESS_DENIED;
 227                 tevent_req_nterror(req, state->status);
 228                 return tevent_req_post(req, ev);
 229         }
 230         if (!CHECK_READ(state->dst_fsp, smb2req->smb1req)) {
 231                 state->status = NT_STATUS_ACCESS_DENIED;
 232                 tevent_req_nterror(req, state->status);
 233                 return tevent_req_post(req, ev);
 234         }
 235         if (!CHECK_READ(state->src_fsp, smb2req->smb1req)) {
 236                 state->status = NT_STATUS_ACCESS_DENIED;
 237                 tevent_req_nterror(req, state->status);
 238                 return tevent_req_post(req, ev);
 239         }
 240
 241         state->status = copychunk_check_limits(&cc_copy);
 242         if (tevent_req_nterror(req, state->status)) {
 243                 DEBUG(3, ("copy chunk req exceeds limits\n"));
 244                 state->out_data = COPYCHUNK_OUT_LIMITS;
 245                 return tevent_req_post(req, ev);
 246         }
 247
 248         /* any errors from here onwards should carry copychunk response data */
 249         state->out_data = COPYCHUNK_OUT_RSP;
 250
 251         state->status = copychunk_lock_all(state,
 252                                            &cc_copy,
 253                                            state->src_fsp,
 254                                            state->dst_fsp,
 255                                            &state->rlocks,
 256                                            &state->wlocks,
 257                                            &state->num_locks);
 258         if (tevent_req_nterror(req, state->status)) {
 259                 return tevent_req_post(req, ev);
 260         }
 261
 262         for (i = 0; i < cc_copy.chunk_count; i++) {
 263                 struct tevent_req *vfs_subreq;
 264                 chunk = &cc_copy.chunks[i];
 265                 vfs_subreq = SMB_VFS_COPY_CHUNK_SEND(dst_fsp->conn,
 266                                                      state, ev,
 267                                                      state->src_fsp,
 268                                                      chunk->source_off,
 269                                                      state->dst_fsp,
 270                                                      chunk->target_off,
 271                                                      chunk->length);
 272                 if (vfs_subreq == NULL) {
 273                         DEBUG(0, ("VFS copy chunk send failed\n"));
 274                         state->status = NT_STATUS_NO_MEMORY;
 275                         if (state->dispatch_count == 0) {
 276                                 /* nothing dispatched, return immediately */
 277                                 copychunk_unlock_all(state->src_fsp,
 278                                                      state->dst_fsp,
 279                                                      state->rlocks,
 280                                                      state->wlocks,
 281                                                      state->num_locks);
 282                                 tevent_req_nterror(req, state->status);
 283                                 return tevent_req_post(req, ev);
 284                         } else {
 285                                 /*
 286                                  * wait for dispatched to complete before
 287                                  * returning error, locks held.
 288                                  */
 289                                 break;
 290                         }
 291                 }
 292                 tevent_req_set_callback(vfs_subreq,
 293                                         fsctl_srv_copychunk_vfs_done, req);
 294                 state->dispatch_count++;
 295         }
 296
 297         /* hold locks until all dispatched requests are completed */
 298         return req;
 299 }
 300
 301 static void fsctl_srv_copychunk_vfs_done(struct tevent_req *subreq)
 302 {
 303         struct tevent_req *req = tevent_req_callback_data(
 304                 subreq, struct tevent_req);
 305         struct fsctl_srv_copychunk_state *state = tevent_req_data(req,
 306                                         struct fsctl_srv_copychunk_state);
 307         off_t chunk_nwritten;
 308         NTSTATUS status;
 309
 310         state->recv_count++;
 311         status = SMB_VFS_COPY_CHUNK_RECV(state->conn, subreq,
 312                                          &chunk_nwritten);
 313         TALLOC_FREE(subreq);
 314         if (NT_STATUS_IS_OK(status)) {
 315                 DEBUG(10, ("good copy chunk recv %d of %d\n",
 316                            state->recv_count,
 317                            state->dispatch_count));
 318                 state->total_written += chunk_nwritten;
 319         } else {
 320                 DEBUG(0, ("bad status in copy chunk recv %d of %d: %s\n",
 321                           state->recv_count,
 322                           state->dispatch_count,
 323                           nt_errstr(status)));
 324                 state->bad_recv_count++;
 325                 /* may overwrite previous failed status */
 326                 state->status = status;
 327         }
 328
 329         if (state->recv_count != state->dispatch_count) {
 330                 /*
 331                  * Wait for all VFS copy_chunk requests to complete, even
 332                  * if an error is received for a specific chunk.
 333                  */
 334                 return;
 335         }
 336
 337         /* all VFS copy_chunk requests done */
 338         copychunk_unlock_all(state->src_fsp,
 339                              state->dst_fsp,
 340                              state->rlocks,
 341                              state->wlocks,
 342                              state->num_locks);
 343
 344         if (!tevent_req_nterror(req, state->status)) {
 345                 tevent_req_done(req);
 346         }
 347 }
 348
 349 static NTSTATUS fsctl_srv_copychunk_recv(struct tevent_req *req,
 350                                          struct srv_copychunk_rsp *cc_rsp,
 351                                          bool *pack_rsp)
 352 {
 353         struct fsctl_srv_copychunk_state *state = tevent_req_data(req,
 354                                         struct fsctl_srv_copychunk_state);
 355         NTSTATUS status;
 356
 357         switch (state->out_data) {
 358         case COPYCHUNK_OUT_EMPTY:
 359                 *pack_rsp = false;
 360                 break;
 361         case COPYCHUNK_OUT_LIMITS:
 362                 /* 2.2.32.1 - send back our maximum transfer size limits */
 363                 copychunk_pack_limits(cc_rsp);
 364                 *pack_rsp = true;
 365                 break;
 366         case COPYCHUNK_OUT_RSP:
 367                 cc_rsp->chunks_written = state->recv_count - state->bad_recv_count;
 368                 cc_rsp->chunk_bytes_written = 0;
 369                 cc_rsp->total_bytes_written = state->total_written;
 370                 *pack_rsp = true;
 371                 break;
 372         default:        /* not reached */
 373                 assert(1);
 374                 break;
 375         }
 376         status = state->status;
 377         tevent_req_received(req);
 378
 379         return status;
 380 }
 381
 382 static NTSTATUS fsctl_validate_neg_info(TALLOC_CTX *mem_ctx,
 383                                         struct tevent_context *ev,
 384                                         struct smbXsrv_connection *conn,
 385                                         DATA_BLOB *in_input,
 386                                         uint32_t in_max_output,
 387                                         DATA_BLOB *out_output,
 388                                         bool *disconnect)
 389 {
 390         uint32_t in_capabilities;
 391         DATA_BLOB in_guid_blob;
 392         struct GUID in_guid;
 393         uint16_t in_security_mode;
 394         uint16_t in_num_dialects;
 395         uint16_t i;
 396         DATA_BLOB out_guid_blob;
 397         NTSTATUS status;
 398
 399         if (in_input->length < 0x18) {
 400                 return NT_STATUS_INVALID_PARAMETER;
 401         }
 402
 403         in_capabilities = IVAL(in_input->data, 0x00);
 404         in_guid_blob = data_blob_const(in_input->data + 0x04, 16);
 405         in_security_mode = SVAL(in_input->data, 0x14);
 406         in_num_dialects = SVAL(in_input->data, 0x16);
 407
 408         if (in_input->length < (0x18 + in_num_dialects*2)) {
 409                 return NT_STATUS_INVALID_PARAMETER;
 410         }
 411
 412         if (in_max_output < 0x18) {
 413                 return NT_STATUS_BUFFER_TOO_SMALL;
 414         }
 415
 416         status = GUID_from_ndr_blob(&in_guid_blob, &in_guid);
 417         if (!NT_STATUS_IS_OK(status)) {
 418                 return status;
 419         }
 420
 421         if (in_num_dialects != conn->smb2.client.num_dialects) {
 422                 *disconnect = true;
 423                 return NT_STATUS_ACCESS_DENIED;
 424         }
 425
 426         for (i=0; i < in_num_dialects; i++) {
 427                 uint16_t v = SVAL(in_input->data, 0x18 + i*2);
 428
 429                 if (conn->smb2.client.dialects[i] != v) {
 430                         *disconnect = true;
 431                         return NT_STATUS_ACCESS_DENIED;
 432                 }
 433         }
 434
 435         if (GUID_compare(&in_guid, &conn->smb2.client.guid) != 0) {
 436                 *disconnect = true;
 437                 return NT_STATUS_ACCESS_DENIED;
 438         }
 439
 440         if (in_security_mode != conn->smb2.client.security_mode) {
 441                 *disconnect = true;
 442                 return NT_STATUS_ACCESS_DENIED;
 443         }
 444
 445         if (in_capabilities != conn->smb2.client.capabilities) {
 446                 *disconnect = true;
 447                 return NT_STATUS_ACCESS_DENIED;
 448         }
 449
 450         status = GUID_to_ndr_blob(&conn->smb2.server.guid, mem_ctx,
 451                                   &out_guid_blob);
 452         if (!NT_STATUS_IS_OK(status)) {
 453                 return status;
 454         }
 455
 456         *out_output = data_blob_talloc(mem_ctx, NULL, 0x18);
 457         if (out_output->data == NULL) {
 458                 return NT_STATUS_NO_MEMORY;
 459         }
 460
 461         SIVAL(out_output->data, 0x00, conn->smb2.server.capabilities);
 462         memcpy(out_output->data+0x04, out_guid_blob.data, 16);
 463         SIVAL(out_output->data, 0x14, conn->smb2.server.security_mode);
 464         SIVAL(out_output->data, 0x16, conn->smb2.server.dialect);
 465
 466         return NT_STATUS_OK;
 467 }
 468
 469 static NTSTATUS fsctl_srv_req_resume_key(TALLOC_CTX *mem_ctx,
 470                                          struct tevent_context *ev,
 471                                          struct files_struct *fsp,
 472                                          uint32_t in_max_output,
 473                                          DATA_BLOB *out_output)
 474 {
 475         struct req_resume_key_rsp rkey_rsp;
 476         enum ndr_err_code ndr_ret;
 477         DATA_BLOB output;
 478
 479         if (fsp == NULL) {
 480                 return NT_STATUS_FILE_CLOSED;
 481         }
 482
 483         ZERO_STRUCT(rkey_rsp);
 484         /* combine persistent and volatile handles for the resume key */
 485         SBVAL(rkey_rsp.resume_key, 0, fsp->op->global->open_persistent_id);
 486         SBVAL(rkey_rsp.resume_key, 8, fsp->op->global->open_volatile_id);
 487
 488         ndr_ret = ndr_push_struct_blob(&output, mem_ctx, &rkey_rsp,
 489                         (ndr_push_flags_fn_t)ndr_push_req_resume_key_rsp);
 490         if (ndr_ret != NDR_ERR_SUCCESS) {
 491                 return NT_STATUS_INTERNAL_ERROR;
 492         }
 493
 494         if (in_max_output < output.length) {
 495                 DEBUG(1, ("max output %u too small for resume key rsp %ld\n",
 496                           in_max_output, (long int)output.length));
 497                 return NT_STATUS_INVALID_PARAMETER;
 498         }
 499         *out_output = output;
 500
 501         return NT_STATUS_OK;
 502 }
 503
 504 static void smb2_ioctl_network_fs_copychunk_done(struct tevent_req *subreq);
 505
 506 struct tevent_req *smb2_ioctl_network_fs(uint32_t ctl_code,
 507                                          struct tevent_context *ev,
 508                                          struct tevent_req *req,
 509                                          struct smbd_smb2_ioctl_state *state)
 510 {
 511         struct tevent_req *subreq;
 512         NTSTATUS status;
 513
 514         switch (ctl_code) {
 515         case FSCTL_SRV_COPYCHUNK:
 516                 subreq = fsctl_srv_copychunk_send(state, ev, state->fsp,
 517                                                   &state->in_input,
 518                                                   state->smb2req);
 519                 if (tevent_req_nomem(subreq, req)) {
 520                         return tevent_req_post(req, ev);
 521                 }
 522                 tevent_req_set_callback(subreq,
 523                                         smb2_ioctl_network_fs_copychunk_done,
 524                                         req);
 525                 return req;
 526                 break;
 527         case FSCTL_VALIDATE_NEGOTIATE_INFO:
 528                 status = fsctl_validate_neg_info(state, ev,
 529                                                  state->smbreq->sconn->conn,
 530                                                  &state->in_input,
 531                                                  state->in_max_output,
 532                                                  &state->out_output,
 533                                                  &state->disconnect);
 534                 if (!tevent_req_nterror(req, status)) {
 535                         tevent_req_done(req);
 536                 }
 537                 return tevent_req_post(req, ev);
 538                 break;
 539         case FSCTL_SRV_REQUEST_RESUME_KEY:
 540                 status = fsctl_srv_req_resume_key(state, ev, state->fsp,
 541                                                   state->in_max_output,
 542                                                   &state->out_output);
 543                 if (!tevent_req_nterror(req, status)) {
 544                         tevent_req_done(req);
 545                 }
 546                 return tevent_req_post(req, ev);
 547                 break;
 548         default: {
 549                 uint8_t *out_data = NULL;
 550                 uint32_t out_data_len = 0;
 551
 552                 if (state->fsp == NULL) {
 553                         status = NT_STATUS_NOT_SUPPORTED;
 554                 } else {
 555                         status = SMB_VFS_FSCTL(state->fsp,
 556                                                state,
 557                                                ctl_code,
 558                                                state->smbreq->flags2,
 559                                                state->in_input.data,
 560                                                state->in_input.length,
 561                                                &out_data,
 562                                                state->in_max_output,
 563                                                &out_data_len);
 564                         state->out_output = data_blob_const(out_data, out_data_len);
 565                         if (NT_STATUS_IS_OK(status)) {
 566                                 tevent_req_done(req);
 567                                 return tevent_req_post(req, ev);
 568                         }
 569                 }
 570
 571                 if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_SUPPORTED)) {
 572                         if (IS_IPC(state->smbreq->conn)) {
 573                                 status = NT_STATUS_FS_DRIVER_REQUIRED;
 574                         } else {
 575                                 status = NT_STATUS_INVALID_DEVICE_REQUEST;
 576                         }
 577                 }
 578
 579                 tevent_req_nterror(req, status);
 580                 return tevent_req_post(req, ev);
 581                 break;
 582         }
 583         }
 584
 585         tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
 586         return tevent_req_post(req, ev);
 587 }
 588
 589 static void smb2_ioctl_network_fs_copychunk_done(struct tevent_req *subreq)
 590 {
 591         struct tevent_req *req = tevent_req_callback_data(subreq,
 592                                                           struct tevent_req);
 593         struct smbd_smb2_ioctl_state *ioctl_state = tevent_req_data(req,
 594                                                 struct smbd_smb2_ioctl_state);
 595         struct srv_copychunk_rsp cc_rsp;
 596         NTSTATUS status;
 597         bool pack_rsp = false;
 598
 599         ZERO_STRUCT(cc_rsp);
 600         status = fsctl_srv_copychunk_recv(subreq, &cc_rsp, &pack_rsp);
 601         TALLOC_FREE(subreq);
 602         if (pack_rsp == true) {
 603                 enum ndr_err_code ndr_ret;
 604                 ndr_ret = ndr_push_struct_blob(&ioctl_state->out_output,
 605                                                ioctl_state,
 606                                                &cc_rsp,
 607                                 (ndr_push_flags_fn_t)ndr_push_srv_copychunk_rsp);
 608                 if (ndr_ret != NDR_ERR_SUCCESS) {
 609                         status = NT_STATUS_INTERNAL_ERROR;
 610                 }
 611         }
 612
 613         if (!tevent_req_nterror(req, status)) {
 614                 tevent_req_done(req);
 615         }
 616 }